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
  19 #include <linux/etherdevice.h>
  20 #include <linux/sched.h>
  21 #include <linux/firmware.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/module.h>
  24 #include <linux/bcma/bcma.h>
  25 #include <net/mac80211.h>
  26 #include <defs.h>
  27 #include "nicpci.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 BCMDBG
 100 static int msglevel = 0xdeadbeef;
 101 module_param(msglevel, int, 0);
 102 #endif                          /* BCMDBG */
 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
 271         spin_lock_bh(&wl->lock);
 272         if (!wl->pub->up) {
 273                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 274                 kfree_skb(skb);
 275                 goto done;
 276         }
 277         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 278  done:
 279         spin_unlock_bh(&wl->lock);
 280 }
 281
 282 static int brcms_ops_start(struct ieee80211_hw *hw)
 283 {
 284         struct brcms_info *wl = hw->priv;
 285         bool blocked;
 286         int err;
 287
 288         ieee80211_wake_queues(hw);
 289         spin_lock_bh(&wl->lock);
 290         blocked = brcms_rfkill_set_hw_state(wl);
 291         spin_unlock_bh(&wl->lock);
 292         if (!blocked)
 293                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 294
 295         spin_lock_bh(&wl->lock);
 296         /* avoid acknowledging frames before a non-monitor device is added */
 297         wl->mute_tx = true;
 298
 299         if (!wl->pub->up)
 300                 err = brcms_up(wl);
 301         else
 302                 err = -ENODEV;
 303         spin_unlock_bh(&wl->lock);
 304
 305         if (err != 0)
 306                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 307                           err);
 308         return err;
 309 }
 310
 311 static void brcms_ops_stop(struct ieee80211_hw *hw)
 312 {
 313         struct brcms_info *wl = hw->priv;
 314         int status;
 315
 316         ieee80211_stop_queues(hw);
 317
 318         if (wl->wlc == NULL)
 319                 return;
 320
 321         spin_lock_bh(&wl->lock);
 322         status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
 323                                    wl->wlc->hw->deviceid);
 324         spin_unlock_bh(&wl->lock);
 325         if (!status) {
 326                 wiphy_err(wl->wiphy,
 327                           "wl: brcms_ops_stop: chipmatch failed\n");
 328                 return;
 329         }
 330
 331         /* put driver in down state */
 332         spin_lock_bh(&wl->lock);
 333         brcms_down(wl);
 334         spin_unlock_bh(&wl->lock);
 335 }
 336
 337 static int
 338 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 339 {
 340         struct brcms_info *wl = hw->priv;
 341
 342         /* Just STA for now */
 343         if (vif->type != NL80211_IFTYPE_STATION) {
 344                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 345                           " STA for now\n", __func__, vif->type);
 346                 return -EOPNOTSUPP;
 347         }
 348
 349         wl->mute_tx = false;
 350         brcms_c_mute(wl->wlc, false);
 351
 352         return 0;
 353 }
 354
 355 static void
 356 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 357 {
 358 }
 359
 360 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 361 {
 362         struct ieee80211_conf *conf = &hw->conf;
 363         struct brcms_info *wl = hw->priv;
 364         int err = 0;
 365         int new_int;
 366         struct wiphy *wiphy = hw->wiphy;
 367
 368         spin_lock_bh(&wl->lock);
 369         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 370                 brcms_c_set_beacon_listen_interval(wl->wlc,
 371                                                    conf->listen_interval);
 372         }
 373         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 374                 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
 375                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 376                           "true" : "false");
 377         if (changed & IEEE80211_CONF_CHANGE_PS)
 378                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 379                           __func__, conf->flags & IEEE80211_CONF_PS ?
 380                           "true" : "false");
 381
 382         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 383                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 384                 if (err < 0) {
 385                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 386                                   __func__);
 387                         goto config_out;
 388                 }
 389                 new_int = brcms_c_get_tx_power(wl->wlc);
 390                 if (new_int != conf->power_level)
 391                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 392                                   "\n", __func__, conf->power_level,
 393                                   new_int);
 394         }
 395         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 396                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 397                     conf->channel_type == NL80211_CHAN_NO_HT)
 398                         err = brcms_c_set_channel(wl->wlc,
 399                                                   conf->channel->hw_value);
 400                 else
 401                         err = -ENOTSUPP;
 402         }
 403         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 404                 err = brcms_c_set_rate_limit(wl->wlc,
 405                                              conf->short_frame_max_tx_count,
 406                                              conf->long_frame_max_tx_count);
 407
 408  config_out:
 409         spin_unlock_bh(&wl->lock);
 410         return err;
 411 }
 412
 413 static void
 414 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 415                         struct ieee80211_vif *vif,
 416                         struct ieee80211_bss_conf *info, u32 changed)
 417 {
 418         struct brcms_info *wl = hw->priv;
 419         struct wiphy *wiphy = hw->wiphy;
 420
 421         if (changed & BSS_CHANGED_ASSOC) {
 422                 /* association status changed (associated/disassociated)
 423                  * also implies a change in the AID.
 424                  */
 425                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 426                           __func__, info->assoc ? "" : "dis");
 427                 spin_lock_bh(&wl->lock);
 428                 brcms_c_associate_upd(wl->wlc, info->assoc);
 429                 spin_unlock_bh(&wl->lock);
 430         }
 431         if (changed & BSS_CHANGED_ERP_SLOT) {
 432                 s8 val;
 433
 434                 /* slot timing changed */
 435                 if (info->use_short_slot)
 436                         val = 1;
 437                 else
 438                         val = 0;
 439                 spin_lock_bh(&wl->lock);
 440                 brcms_c_set_shortslot_override(wl->wlc, val);
 441                 spin_unlock_bh(&wl->lock);
 442         }
 443
 444         if (changed & BSS_CHANGED_HT) {
 445                 /* 802.11n parameters changed */
 446                 u16 mode = info->ht_operation_mode;
 447
 448                 spin_lock_bh(&wl->lock);
 449                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 450                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 451                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 452                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 453                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 454                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 455                 spin_unlock_bh(&wl->lock);
 456         }
 457         if (changed & BSS_CHANGED_BASIC_RATES) {
 458                 struct ieee80211_supported_band *bi;
 459                 u32 br_mask, i;
 460                 u16 rate;
 461                 struct brcm_rateset rs;
 462                 int error;
 463
 464                 /* retrieve the current rates */
 465                 spin_lock_bh(&wl->lock);
 466                 brcms_c_get_current_rateset(wl->wlc, &rs);
 467                 spin_unlock_bh(&wl->lock);
 468
 469                 br_mask = info->basic_rates;
 470                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 471                 for (i = 0; i < bi->n_bitrates; i++) {
 472                         /* convert to internal rate value */
 473                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 474
 475                         /* set/clear basic rate flag */
 476                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 477                         br_mask >>= 1;
 478                 }
 479
 480                 /* update the rate set */
 481                 spin_lock_bh(&wl->lock);
 482                 error = brcms_c_set_rateset(wl->wlc, &rs);
 483                 spin_unlock_bh(&wl->lock);
 484                 if (error)
 485                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 486                                   error);
 487         }
 488         if (changed & BSS_CHANGED_BEACON_INT) {
 489                 /* Beacon interval changed */
 490                 spin_lock_bh(&wl->lock);
 491                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 492                 spin_unlock_bh(&wl->lock);
 493         }
 494         if (changed & BSS_CHANGED_BSSID) {
 495                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 496                 spin_lock_bh(&wl->lock);
 497                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 498                 spin_unlock_bh(&wl->lock);
 499         }
 500         if (changed & BSS_CHANGED_BEACON)
 501                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 502                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 503
 504         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 505                 /* Beaconing should be enabled/disabled (beaconing modes) */
 506                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 507                           info->enable_beacon ? "true" : "false");
 508         }
 509
 510         if (changed & BSS_CHANGED_CQM) {
 511                 /* Connection quality monitor config changed */
 512                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 513                           " (implement)\n", __func__, info->cqm_rssi_thold,
 514                           info->cqm_rssi_hyst);
 515         }
 516
 517         if (changed & BSS_CHANGED_IBSS) {
 518                 /* IBSS join status changed */
 519                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 520                           info->ibss_joined ? "true" : "false");
 521         }
 522
 523         if (changed & BSS_CHANGED_ARP_FILTER) {
 524                 /* Hardware ARP filter address list or state changed */
 525                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 526                           " (implement)\n", __func__, info->arp_filter_enabled ?
 527                           "true" : "false", info->arp_addr_cnt);
 528         }
 529
 530         if (changed & BSS_CHANGED_QOS) {
 531                 /*
 532                  * QoS for this association was enabled/disabled.
 533                  * Note that it is only ever disabled for station mode.
 534                  */
 535                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 536                           info->qos ? "true" : "false");
 537         }
 538         return;
 539 }
 540
 541 static void
 542 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 543                         unsigned int changed_flags,
 544                         unsigned int *total_flags, u64 multicast)
 545 {
 546         struct brcms_info *wl = hw->priv;
 547         struct wiphy *wiphy = hw->wiphy;
 548
 549         changed_flags &= MAC_FILTERS;
 550         *total_flags &= MAC_FILTERS;
 551
 552         if (changed_flags & FIF_PROMISC_IN_BSS)
 553                 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
 554         if (changed_flags & FIF_ALLMULTI)
 555                 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
 556         if (changed_flags & FIF_FCSFAIL)
 557                 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
 558         if (changed_flags & FIF_CONTROL)
 559                 wiphy_dbg(wiphy, "FIF_CONTROL\n");
 560         if (changed_flags & FIF_OTHER_BSS)
 561                 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
 562         if (changed_flags & FIF_PSPOLL)
 563                 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
 564         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 565                 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
 566
 567         spin_lock_bh(&wl->lock);
 568         brcms_c_mac_promisc(wl->wlc, *total_flags);
 569         spin_unlock_bh(&wl->lock);
 570         return;
 571 }
 572
 573 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 574 {
 575         struct brcms_info *wl = hw->priv;
 576         spin_lock_bh(&wl->lock);
 577         brcms_c_scan_start(wl->wlc);
 578         spin_unlock_bh(&wl->lock);
 579         return;
 580 }
 581
 582 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 583 {
 584         struct brcms_info *wl = hw->priv;
 585         spin_lock_bh(&wl->lock);
 586         brcms_c_scan_stop(wl->wlc);
 587         spin_unlock_bh(&wl->lock);
 588         return;
 589 }
 590
 591 static int
 592 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 593                   const struct ieee80211_tx_queue_params *params)
 594 {
 595         struct brcms_info *wl = hw->priv;
 596
 597         spin_lock_bh(&wl->lock);
 598         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 599         spin_unlock_bh(&wl->lock);
 600
 601         return 0;
 602 }
 603
 604 static int
 605 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 606                struct ieee80211_sta *sta)
 607 {
 608         struct brcms_info *wl = hw->priv;
 609         struct scb *scb = &wl->wlc->pri_scb;
 610
 611         brcms_c_init_scb(scb);
 612
 613         wl->pub->global_ampdu = &(scb->scb_ampdu);
 614         wl->pub->global_ampdu->scb = scb;
 615         wl->pub->global_ampdu->max_pdu = 16;
 616
 617         /*
 618          * minstrel_ht initiates addBA on our behalf by calling
 619          * ieee80211_start_tx_ba_session()
 620          */
 621         return 0;
 622 }
 623
 624 static int
 625 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 626                     struct ieee80211_vif *vif,
 627                     enum ieee80211_ampdu_mlme_action action,
 628                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 629                     u8 buf_size)
 630 {
 631         struct brcms_info *wl = hw->priv;
 632         struct scb *scb = &wl->wlc->pri_scb;
 633         int status;
 634
 635         if (WARN_ON(scb->magic != SCB_MAGIC))
 636                 return -EIDRM;
 637         switch (action) {
 638         case IEEE80211_AMPDU_RX_START:
 639                 break;
 640         case IEEE80211_AMPDU_RX_STOP:
 641                 break;
 642         case IEEE80211_AMPDU_TX_START:
 643                 spin_lock_bh(&wl->lock);
 644                 status = brcms_c_aggregatable(wl->wlc, tid);
 645                 spin_unlock_bh(&wl->lock);
 646                 if (!status) {
 647                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 648                                   tid);
 649                         return -EINVAL;
 650                 }
 651                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 652                 break;
 653
 654         case IEEE80211_AMPDU_TX_STOP:
 655                 spin_lock_bh(&wl->lock);
 656                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 657                 spin_unlock_bh(&wl->lock);
 658                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 659                 break;
 660         case IEEE80211_AMPDU_TX_OPERATIONAL:
 661                 /*
 662                  * BA window size from ADDBA response ('buf_size') defines how
 663                  * many outstanding MPDUs are allowed for the BA stream by
 664                  * recipient and traffic class. 'ampdu_factor' gives maximum
 665                  * AMPDU size.
 666                  */
 667                 spin_lock_bh(&wl->lock);
 668                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 669                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 670                          sta->ht_cap.ampdu_factor)) - 1);
 671                 spin_unlock_bh(&wl->lock);
 672                 /* Power save wakeup */
 673                 break;
 674         default:
 675                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 676                           __func__);
 677         }
 678
 679         return 0;
 680 }
 681
 682 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 683 {
 684         struct brcms_info *wl = hw->priv;
 685         bool blocked;
 686
 687         spin_lock_bh(&wl->lock);
 688         blocked = brcms_c_check_radio_disabled(wl->wlc);
 689         spin_unlock_bh(&wl->lock);
 690
 691         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 692 }
 693
 694 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 695 {
 696         struct brcms_info *wl = hw->priv;
 697
 698         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 699
 700         /* wait for packet queue and dma fifos to run empty */
 701         spin_lock_bh(&wl->lock);
 702         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 703         spin_unlock_bh(&wl->lock);
 704 }
 705
 706 static const struct ieee80211_ops brcms_ops = {
 707         .tx = brcms_ops_tx,
 708         .start = brcms_ops_start,
 709         .stop = brcms_ops_stop,
 710         .add_interface = brcms_ops_add_interface,
 711         .remove_interface = brcms_ops_remove_interface,
 712         .config = brcms_ops_config,
 713         .bss_info_changed = brcms_ops_bss_info_changed,
 714         .configure_filter = brcms_ops_configure_filter,
 715         .sw_scan_start = brcms_ops_sw_scan_start,
 716         .sw_scan_complete = brcms_ops_sw_scan_complete,
 717         .conf_tx = brcms_ops_conf_tx,
 718         .sta_add = brcms_ops_sta_add,
 719         .ampdu_action = brcms_ops_ampdu_action,
 720         .rfkill_poll = brcms_ops_rfkill_poll,
 721         .flush = brcms_ops_flush,
 722 };
 723
 724 /*
 725  * is called in brcms_bcma_probe() context, therefore no locking required.
 726  */
 727 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 728 {
 729         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 730 }
 731
 732 void brcms_dpc(unsigned long data)
 733 {
 734         struct brcms_info *wl;
 735
 736         wl = (struct brcms_info *) data;
 737
 738         spin_lock_bh(&wl->lock);
 739
 740         /* call the common second level interrupt handler */
 741         if (wl->pub->up) {
 742                 if (wl->resched) {
 743                         unsigned long flags;
 744
 745                         spin_lock_irqsave(&wl->isr_lock, flags);
 746                         brcms_c_intrsupd(wl->wlc);
 747                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 748                 }
 749
 750                 wl->resched = brcms_c_dpc(wl->wlc, true);
 751         }
 752
 753         /* brcms_c_dpc() may bring the driver down */
 754         if (!wl->pub->up)
 755                 goto done;
 756
 757         /* re-schedule dpc */
 758         if (wl->resched)
 759                 tasklet_schedule(&wl->tasklet);
 760         else
 761                 /* re-enable interrupts */
 762                 brcms_intrson(wl);
 763
 764  done:
 765         spin_unlock_bh(&wl->lock);
 766 }
 767
 768 /*
 769  * Precondition: Since this function is called in brcms_pci_probe() context,
 770  * no locking is required.
 771  */
 772 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 773 {
 774         int status;
 775         struct device *device = &pdev->dev;
 776         char fw_name[100];
 777         int i;
 778
 779         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 780         for (i = 0; i < MAX_FW_IMAGES; i++) {
 781                 if (brcms_firmwares[i] == NULL)
 782                         break;
 783                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 784                         UCODE_LOADER_API_VER);
 785                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 786                 if (status) {
 787                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 788                                   KBUILD_MODNAME, fw_name);
 789                         return status;
 790                 }
 791                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 792                         UCODE_LOADER_API_VER);
 793                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 794                 if (status) {
 795                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 796                                   KBUILD_MODNAME, fw_name);
 797                         return status;
 798                 }
 799                 wl->fw.hdr_num_entries[i] =
 800                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 801         }
 802         wl->fw.fw_cnt = i;
 803         return brcms_ucode_data_init(wl, &wl->ucode);
 804 }
 805
 806 /*
 807  * Precondition: Since this function is called in brcms_pci_probe() context,
 808  * no locking is required.
 809  */
 810 static void brcms_release_fw(struct brcms_info *wl)
 811 {
 812         int i;
 813         for (i = 0; i < MAX_FW_IMAGES; i++) {
 814                 release_firmware(wl->fw.fw_bin[i]);
 815                 release_firmware(wl->fw.fw_hdr[i]);
 816         }
 817 }
 818
 819 /**
 820  * This function frees the WL per-device resources.
 821  *
 822  * This function frees resources owned by the WL device pointed to
 823  * by the wl parameter.
 824  *
 825  * precondition: can both be called locked and unlocked
 826  *
 827  */
 828 static void brcms_free(struct brcms_info *wl)
 829 {
 830         struct brcms_timer *t, *next;
 831
 832         /* free ucode data */
 833         if (wl->fw.fw_cnt)
 834                 brcms_ucode_data_free(&wl->ucode);
 835         if (wl->irq)
 836                 free_irq(wl->irq, wl);
 837
 838         /* kill dpc */
 839         tasklet_kill(&wl->tasklet);
 840
 841         if (wl->pub)
 842                 brcms_c_module_unregister(wl->pub, "linux", wl);
 843
 844         /* free common resources */
 845         if (wl->wlc) {
 846                 brcms_c_detach(wl->wlc);
 847                 wl->wlc = NULL;
 848                 wl->pub = NULL;
 849         }
 850
 851         /* virtual interface deletion is deferred so we cannot spinwait */
 852
 853         /* wait for all pending callbacks to complete */
 854         while (atomic_read(&wl->callbacks) > 0)
 855                 schedule();
 856
 857         /* free timers */
 858         for (t = wl->timers; t; t = next) {
 859                 next = t->next;
 860 #ifdef BCMDBG
 861                 kfree(t->name);
 862 #endif
 863                 kfree(t);
 864         }
 865 }
 866
 867 /*
 868 * called from both kernel as from this kernel module (error flow on attach)
 869 * precondition: perimeter lock is not acquired.
 870 */
 871 static void brcms_remove(struct bcma_device *pdev)
 872 {
 873         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 874         struct brcms_info *wl = hw->priv;
 875
 876         if (wl->wlc) {
 877                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 878                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 879                 ieee80211_unregister_hw(hw);
 880         }
 881
 882         brcms_free(wl);
 883
 884         bcma_set_drvdata(pdev, NULL);
 885         ieee80211_free_hw(hw);
 886 }
 887
 888 static irqreturn_t brcms_isr(int irq, void *dev_id)
 889 {
 890         struct brcms_info *wl;
 891         bool ours, wantdpc;
 892
 893         wl = (struct brcms_info *) dev_id;
 894
 895         spin_lock(&wl->isr_lock);
 896
 897         /* call common first level interrupt handler */
 898         ours = brcms_c_isr(wl->wlc, &wantdpc);
 899         if (ours) {
 900                 /* if more to do... */
 901                 if (wantdpc) {
 902
 903                         /* ...and call the second level interrupt handler */
 904                         /* schedule dpc */
 905                         tasklet_schedule(&wl->tasklet);
 906                 }
 907         }
 908
 909         spin_unlock(&wl->isr_lock);
 910
 911         return IRQ_RETVAL(ours);
 912 }
 913
 914 /*
 915  * is called in brcms_pci_probe() context, therefore no locking required.
 916  */
 917 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 918 {
 919         struct brcms_info *wl = hw->priv;
 920         struct brcms_c_info *wlc = wl->wlc;
 921         struct ieee80211_supported_band *band;
 922         int has_5g = 0;
 923         u16 phy_type;
 924
 925         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 926         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 927
 928         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 929         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 930                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 931                 *band = brcms_band_2GHz_nphy_template;
 932                 if (phy_type == PHY_TYPE_LCN) {
 933                         /* Single stream */
 934                         band->ht_cap.mcs.rx_mask[1] = 0;
 935                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 936                 }
 937                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 938         } else {
 939                 return -EPERM;
 940         }
 941
 942         /* Assume all bands use the same phy.  True for 11n devices. */
 943         if (wl->pub->_nbands > 1) {
 944                 has_5g++;
 945                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 946                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 947                         *band = brcms_band_5GHz_nphy_template;
 948                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 949                 } else {
 950                         return -EPERM;
 951                 }
 952         }
 953         return 0;
 954 }
 955
 956 /*
 957  * is called in brcms_pci_probe() context, therefore no locking required.
 958  */
 959 static int ieee_hw_init(struct ieee80211_hw *hw)
 960 {
 961         hw->flags = IEEE80211_HW_SIGNAL_DBM
 962             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 963             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 964             | IEEE80211_HW_AMPDU_AGGREGATION;
 965
 966         hw->extra_tx_headroom = brcms_c_get_header_len();
 967         hw->queues = N_TX_QUEUES;
 968         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 969
 970         /* channel change time is dependent on chip and band  */
 971         hw->channel_change_time = 7 * 1000;
 972         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 973
 974         hw->rate_control_algorithm = "minstrel_ht";
 975
 976         hw->sta_data_size = 0;
 977         return ieee_hw_rate_init(hw);
 978 }
 979
 980 /**
 981  * attach to the WL device.
 982  *
 983  * Attach to the WL device identified by vendor and device parameters.
 984  * regs is a host accessible memory address pointing to WL device registers.
 985  *
 986  * brcms_attach is not defined as static because in the case where no bus
 987  * is defined, wl_attach will never be called, and thus, gcc will issue
 988  * a warning that this function is defined but not used if we declare
 989  * it as static.
 990  *
 991  *
 992  * is called in brcms_bcma_probe() context, therefore no locking required.
 993  */
 994 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
 995 {
 996         struct brcms_info *wl = NULL;
 997         int unit, err;
 998         struct ieee80211_hw *hw;
 999         u8 perm[ETH_ALEN];
1000
1001         unit = n_adapters_found;
1002         err = 0;
1003
1004         if (unit < 0)
1005                 return NULL;
1006
1007         /* allocate private info */
1008         hw = bcma_get_drvdata(pdev);
1009         if (hw != NULL)
1010                 wl = hw->priv;
1011         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1012                 return NULL;
1013         wl->wiphy = hw->wiphy;
1014
1015         atomic_set(&wl->callbacks, 0);
1016
1017         /* setup the bottom half handler */
1018         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1019
1020         spin_lock_init(&wl->lock);
1021         spin_lock_init(&wl->isr_lock);
1022
1023         /* prepare ucode */
1024         if (brcms_request_fw(wl, pdev->bus->host_pci) < 0) {
1025                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1026                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1027                 brcms_release_fw(wl);
1028                 brcms_remove(pdev);
1029                 return NULL;
1030         }
1031
1032         /* common load-time initialization */
1033         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1034         brcms_release_fw(wl);
1035         if (!wl->wlc) {
1036                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1037                           KBUILD_MODNAME, err);
1038                 goto fail;
1039         }
1040         wl->pub = brcms_c_pub(wl->wlc);
1041
1042         wl->pub->ieee_hw = hw;
1043
1044         /* register our interrupt handler */
1045         if (request_irq(pdev->bus->host_pci->irq, brcms_isr,
1046                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1047                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1048                 goto fail;
1049         }
1050         wl->irq = pdev->bus->host_pci->irq;
1051
1052         /* register module */
1053         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1054
1055         if (ieee_hw_init(hw)) {
1056                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1057                           __func__);
1058                 goto fail;
1059         }
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                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1073         else
1074                 err = brcms_set_hint(wl, "US");
1075         if (err)
1076                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1077                           __func__, err);
1078
1079         n_adapters_found++;
1080         return wl;
1081
1082 fail:
1083         brcms_free(wl);
1084         return NULL;
1085 }
1086
1087
1088
1089 /**
1090  * determines if a device is a WL device, and if so, attaches it.
1091  *
1092  * This function determines if a device pointed to by pdev is a WL device,
1093  * and if so, performs a brcms_attach() on it.
1094  *
1095  * Perimeter lock is initialized in the course of this function.
1096  */
1097 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1098 {
1099         struct brcms_info *wl;
1100         struct ieee80211_hw *hw;
1101
1102         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1103                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1104                  pdev->bus->host_pci->irq);
1105
1106         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1107             (pdev->id.id != BCMA_CORE_80211))
1108                 return -ENODEV;
1109
1110         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1111         if (!hw) {
1112                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1113                 return -ENOMEM;
1114         }
1115
1116         SET_IEEE80211_DEV(hw, &pdev->dev);
1117
1118         bcma_set_drvdata(pdev, hw);
1119
1120         memset(hw->priv, 0, sizeof(*wl));
1121
1122         wl = brcms_attach(pdev);
1123         if (!wl) {
1124                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1125                        __func__);
1126                 return -ENODEV;
1127         }
1128         return 0;
1129 }
1130
1131 static int brcms_pci_suspend(struct pci_dev *pdev)
1132 {
1133         pci_save_state(pdev);
1134         pci_disable_device(pdev);
1135         return pci_set_power_state(pdev, PCI_D3hot);
1136 }
1137
1138 static int brcms_suspend(struct bcma_device *pdev, pm_message_t state)
1139 {
1140         struct brcms_info *wl;
1141         struct ieee80211_hw *hw;
1142
1143         hw = bcma_get_drvdata(pdev);
1144         wl = hw->priv;
1145         if (!wl) {
1146                 wiphy_err(wl->wiphy,
1147                           "brcms_suspend: bcma_get_drvdata failed\n");
1148                 return -ENODEV;
1149         }
1150
1151         /* only need to flag hw is down for proper resume */
1152         spin_lock_bh(&wl->lock);
1153         wl->pub->hw_up = false;
1154         spin_unlock_bh(&wl->lock);
1155
1156         /* temporarily do suspend ourselves */
1157         return brcms_pci_suspend(pdev->bus->host_pci);
1158 }
1159
1160 static int brcms_pci_resume(struct pci_dev *pdev)
1161 {
1162         int err = 0;
1163         uint val;
1164
1165         err = pci_set_power_state(pdev, PCI_D0);
1166         if (err)
1167                 return err;
1168
1169         pci_restore_state(pdev);
1170
1171         err = pci_enable_device(pdev);
1172         if (err)
1173                 return err;
1174
1175         pci_set_master(pdev);
1176
1177         pci_read_config_dword(pdev, 0x40, &val);
1178         if ((val & 0x0000ff00) != 0)
1179                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1180
1181         return 0;
1182 }
1183
1184 static int brcms_resume(struct bcma_device *pdev)
1185 {
1186         /*
1187         *  just do pci resume for now until bcma supports it.
1188         */
1189         return brcms_pci_resume(pdev->bus->host_pci);
1190 }
1191
1192 static struct bcma_driver brcms_bcma_driver = {
1193         .name     = KBUILD_MODNAME,
1194         .probe    = brcms_bcma_probe,
1195         .suspend  = brcms_suspend,
1196         .resume   = brcms_resume,
1197         .remove   = __devexit_p(brcms_remove),
1198         .id_table = brcms_coreid_table,
1199 };
1200
1201 /**
1202  * This is the main entry point for the brcmsmac driver.
1203  *
1204  * This function determines if a device pointed to by pdev is a WL device,
1205  * and if so, performs a brcms_attach() on it.
1206  *
1207  */
1208 static int __init brcms_module_init(void)
1209 {
1210         int error = -ENODEV;
1211
1212 #ifdef BCMDBG
1213         if (msglevel != 0xdeadbeef)
1214                 brcm_msg_level = msglevel;
1215 #endif                          /* BCMDBG */
1216
1217         error = bcma_driver_register(&brcms_bcma_driver);
1218         printk(KERN_ERR "%s: register returned %d\n", __func__, error);
1219         if (!error)
1220                 return 0;
1221
1222         return error;
1223 }
1224
1225 /**
1226  * This function unloads the brcmsmac driver from the system.
1227  *
1228  * This function unconditionally unloads the brcmsmac driver module from the
1229  * system.
1230  *
1231  */
1232 static void __exit brcms_module_exit(void)
1233 {
1234         bcma_driver_unregister(&brcms_bcma_driver);
1235 }
1236
1237 module_init(brcms_module_init);
1238 module_exit(brcms_module_exit);
1239
1240 /*
1241  * precondition: perimeter lock has been acquired
1242  */
1243 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1244                          bool state, int prio)
1245 {
1246         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1247 }
1248
1249 /*
1250  * precondition: perimeter lock has been acquired
1251  */
1252 void brcms_init(struct brcms_info *wl)
1253 {
1254         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1255         brcms_reset(wl);
1256         brcms_c_init(wl->wlc, wl->mute_tx);
1257 }
1258
1259 /*
1260  * precondition: perimeter lock has been acquired
1261  */
1262 uint brcms_reset(struct brcms_info *wl)
1263 {
1264         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1265         brcms_c_reset(wl->wlc);
1266
1267         /* dpc will not be rescheduled */
1268         wl->resched = false;
1269
1270         return 0;
1271 }
1272
1273 void brcms_fatal_error(struct brcms_info *wl)
1274 {
1275         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1276                   wl->wlc->pub->unit);
1277         brcms_reset(wl);
1278         ieee80211_restart_hw(wl->pub->ieee_hw);
1279 }
1280
1281 /*
1282  * These are interrupt on/off entry points. Disable interrupts
1283  * during interrupt state transition.
1284  */
1285 void brcms_intrson(struct brcms_info *wl)
1286 {
1287         unsigned long flags;
1288
1289         spin_lock_irqsave(&wl->isr_lock, flags);
1290         brcms_c_intrson(wl->wlc);
1291         spin_unlock_irqrestore(&wl->isr_lock, flags);
1292 }
1293
1294 u32 brcms_intrsoff(struct brcms_info *wl)
1295 {
1296         unsigned long flags;
1297         u32 status;
1298
1299         spin_lock_irqsave(&wl->isr_lock, flags);
1300         status = brcms_c_intrsoff(wl->wlc);
1301         spin_unlock_irqrestore(&wl->isr_lock, flags);
1302         return status;
1303 }
1304
1305 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1306 {
1307         unsigned long flags;
1308
1309         spin_lock_irqsave(&wl->isr_lock, flags);
1310         brcms_c_intrsrestore(wl->wlc, macintmask);
1311         spin_unlock_irqrestore(&wl->isr_lock, flags);
1312 }
1313
1314 /*
1315  * precondition: perimeter lock has been acquired
1316  */
1317 int brcms_up(struct brcms_info *wl)
1318 {
1319         int error = 0;
1320
1321         if (wl->pub->up)
1322                 return 0;
1323
1324         error = brcms_c_up(wl->wlc);
1325
1326         return error;
1327 }
1328
1329 /*
1330  * precondition: perimeter lock has been acquired
1331  */
1332 void brcms_down(struct brcms_info *wl)
1333 {
1334         uint callbacks, ret_val = 0;
1335
1336         /* call common down function */
1337         ret_val = brcms_c_down(wl->wlc);
1338         callbacks = atomic_read(&wl->callbacks) - ret_val;
1339
1340         /* wait for down callbacks to complete */
1341         spin_unlock_bh(&wl->lock);
1342
1343         /* For HIGH_only driver, it's important to actually schedule other work,
1344          * not just spin wait since everything runs at schedule level
1345          */
1346         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1347
1348         spin_lock_bh(&wl->lock);
1349 }
1350
1351 /*
1352 * precondition: perimeter lock is not acquired
1353  */
1354 static void _brcms_timer(struct work_struct *work)
1355 {
1356         struct brcms_timer *t = container_of(work, struct brcms_timer,
1357                                              dly_wrk.work);
1358
1359         spin_lock_bh(&t->wl->lock);
1360
1361         if (t->set) {
1362                 if (t->periodic) {
1363                         atomic_inc(&t->wl->callbacks);
1364                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1365                                                      &t->dly_wrk,
1366                                                      msecs_to_jiffies(t->ms));
1367                 } else {
1368                         t->set = false;
1369                 }
1370
1371                 t->fn(t->arg);
1372         }
1373
1374         atomic_dec(&t->wl->callbacks);
1375
1376         spin_unlock_bh(&t->wl->lock);
1377 }
1378
1379 /*
1380  * Adds a timer to the list. Caller supplies a timer function.
1381  * Is called from wlc.
1382  *
1383  * precondition: perimeter lock has been acquired
1384  */
1385 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1386                                      void (*fn) (void *arg),
1387                                      void *arg, const char *name)
1388 {
1389         struct brcms_timer *t;
1390
1391         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1392         if (!t)
1393                 return NULL;
1394
1395         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1396         t->wl = wl;
1397         t->fn = fn;
1398         t->arg = arg;
1399         t->next = wl->timers;
1400         wl->timers = t;
1401
1402 #ifdef BCMDBG
1403         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1404         if (t->name)
1405                 strcpy(t->name, name);
1406 #endif
1407
1408         return t;
1409 }
1410
1411 /*
1412  * adds only the kernel timer since it's going to be more accurate
1413  * as well as it's easier to make it periodic
1414  *
1415  * precondition: perimeter lock has been acquired
1416  */
1417 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1418 {
1419         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1420
1421 #ifdef BCMDBG
1422         if (t->set)
1423                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1424                           __func__, t->name, periodic);
1425 #endif
1426         t->ms = ms;
1427         t->periodic = (bool) periodic;
1428         t->set = true;
1429
1430         atomic_inc(&t->wl->callbacks);
1431
1432         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1433 }
1434
1435 /*
1436  * return true if timer successfully deleted, false if still pending
1437  *
1438  * precondition: perimeter lock has been acquired
1439  */
1440 bool brcms_del_timer(struct brcms_timer *t)
1441 {
1442         if (t->set) {
1443                 t->set = false;
1444                 if (!cancel_delayed_work(&t->dly_wrk))
1445                         return false;
1446
1447                 atomic_dec(&t->wl->callbacks);
1448         }
1449
1450         return true;
1451 }
1452
1453 /*
1454  * precondition: perimeter lock has been acquired
1455  */
1456 void brcms_free_timer(struct brcms_timer *t)
1457 {
1458         struct brcms_info *wl = t->wl;
1459         struct brcms_timer *tmp;
1460
1461         /* delete the timer in case it is active */
1462         brcms_del_timer(t);
1463
1464         if (wl->timers == t) {
1465                 wl->timers = wl->timers->next;
1466 #ifdef BCMDBG
1467                 kfree(t->name);
1468 #endif
1469                 kfree(t);
1470                 return;
1471
1472         }
1473
1474         tmp = wl->timers;
1475         while (tmp) {
1476                 if (tmp->next == t) {
1477                         tmp->next = t->next;
1478 #ifdef BCMDBG
1479                         kfree(t->name);
1480 #endif
1481                         kfree(t);
1482                         return;
1483                 }
1484                 tmp = tmp->next;
1485         }
1486
1487 }
1488
1489 /*
1490  * precondition: perimeter lock has been acquired
1491  */
1492 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1493 {
1494         int i, entry;
1495         const u8 *pdata;
1496         struct firmware_hdr *hdr;
1497         for (i = 0; i < wl->fw.fw_cnt; i++) {
1498                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1499                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1500                      entry++, hdr++) {
1501                         u32 len = le32_to_cpu(hdr->len);
1502                         if (le32_to_cpu(hdr->idx) == idx) {
1503                                 pdata = wl->fw.fw_bin[i]->data +
1504                                         le32_to_cpu(hdr->offset);
1505                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1506                                 if (*pbuf == NULL)
1507                                         goto fail;
1508
1509                                 return 0;
1510                         }
1511                 }
1512         }
1513         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1514                   idx);
1515         *pbuf = NULL;
1516 fail:
1517         return -ENODATA;
1518 }
1519
1520 /*
1521  * Precondition: Since this function is called in brcms_bcma_probe() context,
1522  * no locking is required.
1523  */
1524 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1525 {
1526         int i, entry;
1527         const u8 *pdata;
1528         struct firmware_hdr *hdr;
1529         for (i = 0; i < wl->fw.fw_cnt; i++) {
1530                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1531                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1532                      entry++, hdr++) {
1533                         if (le32_to_cpu(hdr->idx) == idx) {
1534                                 pdata = wl->fw.fw_bin[i]->data +
1535                                         le32_to_cpu(hdr->offset);
1536                                 if (le32_to_cpu(hdr->len) != 4) {
1537                                         wiphy_err(wl->wiphy,
1538                                                   "ERROR: fw hdr len\n");
1539                                         return -ENOMSG;
1540                                 }
1541                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1542                                 return 0;
1543                         }
1544                 }
1545         }
1546         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1547         return -ENOMSG;
1548 }
1549
1550 /*
1551  * precondition: can both be called locked and unlocked
1552  */
1553 void brcms_ucode_free_buf(void *p)
1554 {
1555         kfree(p);
1556 }
1557
1558 /*
1559  * checks validity of all firmware images loaded from user space
1560  *
1561  * Precondition: Since this function is called in brcms_bcma_probe() context,
1562  * no locking is required.
1563  */
1564 int brcms_check_firmwares(struct brcms_info *wl)
1565 {
1566         int i;
1567         int entry;
1568         int rc = 0;
1569         const struct firmware *fw;
1570         const struct firmware *fw_hdr;
1571         struct firmware_hdr *ucode_hdr;
1572         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1573                 fw =  wl->fw.fw_bin[i];
1574                 fw_hdr = wl->fw.fw_hdr[i];
1575                 if (fw == NULL && fw_hdr == NULL) {
1576                         break;
1577                 } else if (fw == NULL || fw_hdr == NULL) {
1578                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1579                                   __func__);
1580                         rc = -EBADF;
1581                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1582                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1583                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1584                                 sizeof(struct firmware_hdr));
1585                         rc = -EBADF;
1586                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1587                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1588                                   "%zu\n", __func__, fw->size);
1589                         rc = -EBADF;
1590                 } else {
1591                         /* check if ucode section overruns firmware image */
1592                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1593                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1594                              !rc; entry++, ucode_hdr++) {
1595                                 if (le32_to_cpu(ucode_hdr->offset) +
1596                                     le32_to_cpu(ucode_hdr->len) >
1597                                     fw->size) {
1598                                         wiphy_err(wl->wiphy,
1599                                                   "%s: conflicting bin/hdr\n",
1600                                                   __func__);
1601                                         rc = -EBADF;
1602                                 }
1603                         }
1604                 }
1605         }
1606         if (rc == 0 && wl->fw.fw_cnt != i) {
1607                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1608                         wl->fw.fw_cnt);
1609                 rc = -EBADF;
1610         }
1611         return rc;
1612 }
1613
1614 /*
1615  * precondition: perimeter lock has been acquired
1616  */
1617 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1618 {
1619         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1620
1621         spin_unlock_bh(&wl->lock);
1622         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1623         if (blocked)
1624                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1625         spin_lock_bh(&wl->lock);
1626         return blocked;
1627 }
1628
1629 /*
1630  * precondition: perimeter lock has been acquired
1631  */
1632 void brcms_msleep(struct brcms_info *wl, uint ms)
1633 {
1634         spin_unlock_bh(&wl->lock);
1635         msleep(ms);
1636         spin_lock_bh(&wl->lock);
1637 }