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/pci.h>
  21 #include <linux/sched.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/module.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_PLCPFAIL | \
  44         FIF_CONTROL | \
  45         FIF_OTHER_BSS | \
  46         FIF_BCN_PRBRESP_PROMISC)
  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 /* recognized PCI IDs */
  91 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
  92         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
  93         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
  94         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
  95         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
  96         {0}
  97 };
  98
  99 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
 100
 101 #ifdef BCMDBG
 102 static int msglevel = 0xdeadbeef;
 103 module_param(msglevel, int, 0);
 104 #endif                          /* BCMDBG */
 105
 106 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 107         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 110         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 111         CHAN2GHZ(5, 2432, 0),
 112         CHAN2GHZ(6, 2437, 0),
 113         CHAN2GHZ(7, 2442, 0),
 114         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 117         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 118         CHAN2GHZ(12, 2467,
 119                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 120                  IEEE80211_CHAN_NO_HT40PLUS),
 121         CHAN2GHZ(13, 2472,
 122                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 123                  IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(14, 2484,
 125                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 126                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 127 };
 128
 129 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 130         /* UNII-1 */
 131         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 132         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 133         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 134         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 135         /* UNII-2 */
 136         CHAN5GHZ(52,
 137                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 138                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 139         CHAN5GHZ(56,
 140                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 141                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 142         CHAN5GHZ(60,
 143                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 144                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 145         CHAN5GHZ(64,
 146                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 147                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 148         /* MID */
 149         CHAN5GHZ(100,
 150                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 151                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 152         CHAN5GHZ(104,
 153                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 154                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 155         CHAN5GHZ(108,
 156                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 157                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 158         CHAN5GHZ(112,
 159                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 160                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 161         CHAN5GHZ(116,
 162                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 163                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 164         CHAN5GHZ(120,
 165                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 166                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 167         CHAN5GHZ(124,
 168                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 169                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 170         CHAN5GHZ(128,
 171                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 172                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 173         CHAN5GHZ(132,
 174                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 175                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 176         CHAN5GHZ(136,
 177                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 178                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 179         CHAN5GHZ(140,
 180                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 181                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 182                  IEEE80211_CHAN_NO_HT40MINUS),
 183         /* UNII-3 */
 184         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 185         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 186         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 187         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 188         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 189 };
 190
 191 /*
 192  * The rate table is used for both 2.4G and 5G rates. The
 193  * latter being a subset as it does not support CCK rates.
 194  */
 195 static struct ieee80211_rate legacy_ratetable[] = {
 196         RATE(10, 0),
 197         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 199         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 200         RATE(60, 0),
 201         RATE(90, 0),
 202         RATE(120, 0),
 203         RATE(180, 0),
 204         RATE(240, 0),
 205         RATE(360, 0),
 206         RATE(480, 0),
 207         RATE(540, 0),
 208 };
 209
 210 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 211         .band = IEEE80211_BAND_2GHZ,
 212         .channels = brcms_2ghz_chantable,
 213         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 214         .bitrates = legacy_ratetable,
 215         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 216         .ht_cap = {
 217                    /* from include/linux/ieee80211.h */
 218                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 219                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 220                    .ht_supported = true,
 221                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 222                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 223                    .mcs = {
 224                            /* placeholders for now */
 225                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 226                            .rx_highest = cpu_to_le16(500),
 227                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 228                    }
 229 };
 230
 231 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 232         .band = IEEE80211_BAND_5GHZ,
 233         .channels = brcms_5ghz_nphy_chantable,
 234         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 235         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 236         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 237                         BRCMS_LEGACY_5G_RATE_OFFSET,
 238         .ht_cap = {
 239                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 240                           IEEE80211_HT_CAP_SGI_40,
 241                    .ht_supported = true,
 242                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 243                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 244                    .mcs = {
 245                            /* placeholders for now */
 246                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 247                            .rx_highest = cpu_to_le16(500),
 248                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 249                    }
 250 };
 251
 252 /* flags the given rate in rateset as requested */
 253 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 254 {
 255         u32 i;
 256
 257         for (i = 0; i < rs->count; i++) {
 258                 if (rate != (rs->rates[i] & 0x7f))
 259                         continue;
 260
 261                 if (is_br)
 262                         rs->rates[i] |= BRCMS_RATE_FLAG;
 263                 else
 264                         rs->rates[i] &= BRCMS_RATE_MASK;
 265                 return;
 266         }
 267 }
 268
 269 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 270 {
 271         struct brcms_info *wl = hw->priv;
 272
 273         spin_lock_bh(&wl->lock);
 274         if (!wl->pub->up) {
 275                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 276                 kfree_skb(skb);
 277                 goto done;
 278         }
 279         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 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->vendorid,
 325                                    wl->wlc->hw->deviceid);
 326         spin_unlock_bh(&wl->lock);
 327         if (!status) {
 328                 wiphy_err(wl->wiphy,
 329                           "wl: brcms_ops_stop: chipmatch failed\n");
 330                 return;
 331         }
 332
 333         /* put driver in down state */
 334         spin_lock_bh(&wl->lock);
 335         brcms_down(wl);
 336         spin_unlock_bh(&wl->lock);
 337 }
 338
 339 static int
 340 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 341 {
 342         struct brcms_info *wl = hw->priv;
 343
 344         /* Just STA for now */
 345         if (vif->type != NL80211_IFTYPE_STATION) {
 346                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 347                           " STA for now\n", __func__, vif->type);
 348                 return -EOPNOTSUPP;
 349         }
 350
 351         wl->mute_tx = false;
 352         brcms_c_mute(wl->wlc, false);
 353
 354         return 0;
 355 }
 356
 357 static void
 358 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 359 {
 360 }
 361
 362 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 363 {
 364         struct ieee80211_conf *conf = &hw->conf;
 365         struct brcms_info *wl = hw->priv;
 366         int err = 0;
 367         int new_int;
 368         struct wiphy *wiphy = hw->wiphy;
 369
 370         spin_lock_bh(&wl->lock);
 371         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 372                 brcms_c_set_beacon_listen_interval(wl->wlc,
 373                                                    conf->listen_interval);
 374         }
 375         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 376                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 377                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 378                           "true" : "false");
 379         if (changed & IEEE80211_CONF_CHANGE_PS)
 380                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 381                           __func__, conf->flags & IEEE80211_CONF_PS ?
 382                           "true" : "false");
 383
 384         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 385                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 386                 if (err < 0) {
 387                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 388                                   __func__);
 389                         goto config_out;
 390                 }
 391                 new_int = brcms_c_get_tx_power(wl->wlc);
 392                 if (new_int != conf->power_level)
 393                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 394                                   "\n", __func__, conf->power_level,
 395                                   new_int);
 396         }
 397         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 398                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 399                     conf->channel_type == NL80211_CHAN_NO_HT)
 400                         err = brcms_c_set_channel(wl->wlc,
 401                                                   conf->channel->hw_value);
 402                 else
 403                         err = -ENOTSUPP;
 404         }
 405         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 406                 err = brcms_c_set_rate_limit(wl->wlc,
 407                                              conf->short_frame_max_tx_count,
 408                                              conf->long_frame_max_tx_count);
 409
 410  config_out:
 411         spin_unlock_bh(&wl->lock);
 412         return err;
 413 }
 414
 415 static void
 416 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 417                         struct ieee80211_vif *vif,
 418                         struct ieee80211_bss_conf *info, u32 changed)
 419 {
 420         struct brcms_info *wl = hw->priv;
 421         struct wiphy *wiphy = hw->wiphy;
 422
 423         if (changed & BSS_CHANGED_ASSOC) {
 424                 /* association status changed (associated/disassociated)
 425                  * also implies a change in the AID.
 426                  */
 427                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 428                           __func__, info->assoc ? "" : "dis");
 429                 spin_lock_bh(&wl->lock);
 430                 brcms_c_associate_upd(wl->wlc, info->assoc);
 431                 spin_unlock_bh(&wl->lock);
 432         }
 433         if (changed & BSS_CHANGED_ERP_SLOT) {
 434                 s8 val;
 435
 436                 /* slot timing changed */
 437                 if (info->use_short_slot)
 438                         val = 1;
 439                 else
 440                         val = 0;
 441                 spin_lock_bh(&wl->lock);
 442                 brcms_c_set_shortslot_override(wl->wlc, val);
 443                 spin_unlock_bh(&wl->lock);
 444         }
 445
 446         if (changed & BSS_CHANGED_HT) {
 447                 /* 802.11n parameters changed */
 448                 u16 mode = info->ht_operation_mode;
 449
 450                 spin_lock_bh(&wl->lock);
 451                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 452                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 453                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 454                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 455                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 456                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 457                 spin_unlock_bh(&wl->lock);
 458         }
 459         if (changed & BSS_CHANGED_BASIC_RATES) {
 460                 struct ieee80211_supported_band *bi;
 461                 u32 br_mask, i;
 462                 u16 rate;
 463                 struct brcm_rateset rs;
 464                 int error;
 465
 466                 /* retrieve the current rates */
 467                 spin_lock_bh(&wl->lock);
 468                 brcms_c_get_current_rateset(wl->wlc, &rs);
 469                 spin_unlock_bh(&wl->lock);
 470
 471                 br_mask = info->basic_rates;
 472                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 473                 for (i = 0; i < bi->n_bitrates; i++) {
 474                         /* convert to internal rate value */
 475                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 476
 477                         /* set/clear basic rate flag */
 478                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 479                         br_mask >>= 1;
 480                 }
 481
 482                 /* update the rate set */
 483                 spin_lock_bh(&wl->lock);
 484                 error = brcms_c_set_rateset(wl->wlc, &rs);
 485                 spin_unlock_bh(&wl->lock);
 486                 if (error)
 487                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 488                                   error);
 489         }
 490         if (changed & BSS_CHANGED_BEACON_INT) {
 491                 /* Beacon interval changed */
 492                 spin_lock_bh(&wl->lock);
 493                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 494                 spin_unlock_bh(&wl->lock);
 495         }
 496         if (changed & BSS_CHANGED_BSSID) {
 497                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 498                 spin_lock_bh(&wl->lock);
 499                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 500                 spin_unlock_bh(&wl->lock);
 501         }
 502         if (changed & BSS_CHANGED_BEACON)
 503                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 504                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 505
 506         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 507                 /* Beaconing should be enabled/disabled (beaconing modes) */
 508                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 509                           info->enable_beacon ? "true" : "false");
 510         }
 511
 512         if (changed & BSS_CHANGED_CQM) {
 513                 /* Connection quality monitor config changed */
 514                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 515                           " (implement)\n", __func__, info->cqm_rssi_thold,
 516                           info->cqm_rssi_hyst);
 517         }
 518
 519         if (changed & BSS_CHANGED_IBSS) {
 520                 /* IBSS join status changed */
 521                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 522                           info->ibss_joined ? "true" : "false");
 523         }
 524
 525         if (changed & BSS_CHANGED_ARP_FILTER) {
 526                 /* Hardware ARP filter address list or state changed */
 527                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 528                           " (implement)\n", __func__, info->arp_filter_enabled ?
 529                           "true" : "false", info->arp_addr_cnt);
 530         }
 531
 532         if (changed & BSS_CHANGED_QOS) {
 533                 /*
 534                  * QoS for this association was enabled/disabled.
 535                  * Note that it is only ever disabled for station mode.
 536                  */
 537                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 538                           info->qos ? "true" : "false");
 539         }
 540         return;
 541 }
 542
 543 static void
 544 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 545                         unsigned int changed_flags,
 546                         unsigned int *total_flags, u64 multicast)
 547 {
 548         struct brcms_info *wl = hw->priv;
 549         struct wiphy *wiphy = hw->wiphy;
 550
 551         changed_flags &= MAC_FILTERS;
 552         *total_flags &= MAC_FILTERS;
 553         if (changed_flags & FIF_PROMISC_IN_BSS)
 554                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 555         if (changed_flags & FIF_ALLMULTI)
 556                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 557         if (changed_flags & FIF_FCSFAIL)
 558                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 559         if (changed_flags & FIF_PLCPFAIL)
 560                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 561         if (changed_flags & FIF_CONTROL)
 562                 wiphy_err(wiphy, "FIF_CONTROL\n");
 563         if (changed_flags & FIF_OTHER_BSS)
 564                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 565         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 566                 spin_lock_bh(&wl->lock);
 567                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 568                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 569                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 570                 } else {
 571                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 572                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 573                 }
 574                 spin_unlock_bh(&wl->lock);
 575         }
 576         return;
 577 }
 578
 579 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 580 {
 581         struct brcms_info *wl = hw->priv;
 582         spin_lock_bh(&wl->lock);
 583         brcms_c_scan_start(wl->wlc);
 584         spin_unlock_bh(&wl->lock);
 585         return;
 586 }
 587
 588 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 589 {
 590         struct brcms_info *wl = hw->priv;
 591         spin_lock_bh(&wl->lock);
 592         brcms_c_scan_stop(wl->wlc);
 593         spin_unlock_bh(&wl->lock);
 594         return;
 595 }
 596
 597 static int
 598 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 599                   const struct ieee80211_tx_queue_params *params)
 600 {
 601         struct brcms_info *wl = hw->priv;
 602
 603         spin_lock_bh(&wl->lock);
 604         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 605         spin_unlock_bh(&wl->lock);
 606
 607         return 0;
 608 }
 609
 610 static int
 611 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 612                struct ieee80211_sta *sta)
 613 {
 614         struct brcms_info *wl = hw->priv;
 615         struct scb *scb = &wl->wlc->pri_scb;
 616
 617         brcms_c_init_scb(scb);
 618
 619         wl->pub->global_ampdu = &(scb->scb_ampdu);
 620         wl->pub->global_ampdu->scb = scb;
 621         wl->pub->global_ampdu->max_pdu = 16;
 622
 623         /*
 624          * minstrel_ht initiates addBA on our behalf by calling
 625          * ieee80211_start_tx_ba_session()
 626          */
 627         return 0;
 628 }
 629
 630 static int
 631 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 632                     struct ieee80211_vif *vif,
 633                     enum ieee80211_ampdu_mlme_action action,
 634                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 635                     u8 buf_size)
 636 {
 637         struct brcms_info *wl = hw->priv;
 638         struct scb *scb = &wl->wlc->pri_scb;
 639         int status;
 640
 641         if (WARN_ON(scb->magic != SCB_MAGIC))
 642                 return -EIDRM;
 643         switch (action) {
 644         case IEEE80211_AMPDU_RX_START:
 645                 break;
 646         case IEEE80211_AMPDU_RX_STOP:
 647                 break;
 648         case IEEE80211_AMPDU_TX_START:
 649                 spin_lock_bh(&wl->lock);
 650                 status = brcms_c_aggregatable(wl->wlc, tid);
 651                 spin_unlock_bh(&wl->lock);
 652                 if (!status) {
 653                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 654                                   tid);
 655                         return -EINVAL;
 656                 }
 657                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 658                 break;
 659
 660         case IEEE80211_AMPDU_TX_STOP:
 661                 spin_lock_bh(&wl->lock);
 662                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 663                 spin_unlock_bh(&wl->lock);
 664                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 665                 break;
 666         case IEEE80211_AMPDU_TX_OPERATIONAL:
 667                 /*
 668                  * BA window size from ADDBA response ('buf_size') defines how
 669                  * many outstanding MPDUs are allowed for the BA stream by
 670                  * recipient and traffic class. 'ampdu_factor' gives maximum
 671                  * AMPDU size.
 672                  */
 673                 spin_lock_bh(&wl->lock);
 674                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 675                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 676                          sta->ht_cap.ampdu_factor)) - 1);
 677                 spin_unlock_bh(&wl->lock);
 678                 /* Power save wakeup */
 679                 break;
 680         default:
 681                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 682                           __func__);
 683         }
 684
 685         return 0;
 686 }
 687
 688 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 689 {
 690         struct brcms_info *wl = hw->priv;
 691         bool blocked;
 692
 693         spin_lock_bh(&wl->lock);
 694         blocked = brcms_c_check_radio_disabled(wl->wlc);
 695         spin_unlock_bh(&wl->lock);
 696
 697         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 698 }
 699
 700 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 701 {
 702         struct brcms_info *wl = hw->priv;
 703
 704         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 705
 706         /* wait for packet queue and dma fifos to run empty */
 707         spin_lock_bh(&wl->lock);
 708         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 709         spin_unlock_bh(&wl->lock);
 710 }
 711
 712 static const struct ieee80211_ops brcms_ops = {
 713         .tx = brcms_ops_tx,
 714         .start = brcms_ops_start,
 715         .stop = brcms_ops_stop,
 716         .add_interface = brcms_ops_add_interface,
 717         .remove_interface = brcms_ops_remove_interface,
 718         .config = brcms_ops_config,
 719         .bss_info_changed = brcms_ops_bss_info_changed,
 720         .configure_filter = brcms_ops_configure_filter,
 721         .sw_scan_start = brcms_ops_sw_scan_start,
 722         .sw_scan_complete = brcms_ops_sw_scan_complete,
 723         .conf_tx = brcms_ops_conf_tx,
 724         .sta_add = brcms_ops_sta_add,
 725         .ampdu_action = brcms_ops_ampdu_action,
 726         .rfkill_poll = brcms_ops_rfkill_poll,
 727         .flush = brcms_ops_flush,
 728 };
 729
 730 /*
 731  * is called in brcms_pci_probe() context, therefore no locking required.
 732  */
 733 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 734 {
 735         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 736 }
 737
 738 void brcms_dpc(unsigned long data)
 739 {
 740         struct brcms_info *wl;
 741
 742         wl = (struct brcms_info *) data;
 743
 744         spin_lock_bh(&wl->lock);
 745
 746         /* call the common second level interrupt handler */
 747         if (wl->pub->up) {
 748                 if (wl->resched) {
 749                         unsigned long flags;
 750
 751                         spin_lock_irqsave(&wl->isr_lock, flags);
 752                         brcms_c_intrsupd(wl->wlc);
 753                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 754                 }
 755
 756                 wl->resched = brcms_c_dpc(wl->wlc, true);
 757         }
 758
 759         /* brcms_c_dpc() may bring the driver down */
 760         if (!wl->pub->up)
 761                 goto done;
 762
 763         /* re-schedule dpc */
 764         if (wl->resched)
 765                 tasklet_schedule(&wl->tasklet);
 766         else
 767                 /* re-enable interrupts */
 768                 brcms_intrson(wl);
 769
 770  done:
 771         spin_unlock_bh(&wl->lock);
 772 }
 773
 774 /*
 775  * Precondition: Since this function is called in brcms_pci_probe() context,
 776  * no locking is required.
 777  */
 778 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 779 {
 780         int status;
 781         struct device *device = &pdev->dev;
 782         char fw_name[100];
 783         int i;
 784
 785         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 786         for (i = 0; i < MAX_FW_IMAGES; i++) {
 787                 if (brcms_firmwares[i] == NULL)
 788                         break;
 789                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 790                         UCODE_LOADER_API_VER);
 791                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 792                 if (status) {
 793                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 794                                   KBUILD_MODNAME, fw_name);
 795                         return status;
 796                 }
 797                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 798                         UCODE_LOADER_API_VER);
 799                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 800                 if (status) {
 801                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 802                                   KBUILD_MODNAME, fw_name);
 803                         return status;
 804                 }
 805                 wl->fw.hdr_num_entries[i] =
 806                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 807         }
 808         wl->fw.fw_cnt = i;
 809         return brcms_ucode_data_init(wl, &wl->ucode);
 810 }
 811
 812 /*
 813  * Precondition: Since this function is called in brcms_pci_probe() context,
 814  * no locking is required.
 815  */
 816 static void brcms_release_fw(struct brcms_info *wl)
 817 {
 818         int i;
 819         for (i = 0; i < MAX_FW_IMAGES; i++) {
 820                 release_firmware(wl->fw.fw_bin[i]);
 821                 release_firmware(wl->fw.fw_hdr[i]);
 822         }
 823 }
 824
 825 /**
 826  * This function frees the WL per-device resources.
 827  *
 828  * This function frees resources owned by the WL device pointed to
 829  * by the wl parameter.
 830  *
 831  * precondition: can both be called locked and unlocked
 832  *
 833  */
 834 static void brcms_free(struct brcms_info *wl)
 835 {
 836         struct brcms_timer *t, *next;
 837
 838         /* free ucode data */
 839         if (wl->fw.fw_cnt)
 840                 brcms_ucode_data_free(&wl->ucode);
 841         if (wl->irq)
 842                 free_irq(wl->irq, wl);
 843
 844         /* kill dpc */
 845         tasklet_kill(&wl->tasklet);
 846
 847         if (wl->pub)
 848                 brcms_c_module_unregister(wl->pub, "linux", wl);
 849
 850         /* free common resources */
 851         if (wl->wlc) {
 852                 brcms_c_detach(wl->wlc);
 853                 wl->wlc = NULL;
 854                 wl->pub = NULL;
 855         }
 856
 857         /* virtual interface deletion is deferred so we cannot spinwait */
 858
 859         /* wait for all pending callbacks to complete */
 860         while (atomic_read(&wl->callbacks) > 0)
 861                 schedule();
 862
 863         /* free timers */
 864         for (t = wl->timers; t; t = next) {
 865                 next = t->next;
 866 #ifdef BCMDBG
 867                 kfree(t->name);
 868 #endif
 869                 kfree(t);
 870         }
 871
 872         /*
 873          * unregister_netdev() calls get_stats() which may read chip
 874          * registers so we cannot unmap the chip registers until
 875          * after calling unregister_netdev() .
 876          */
 877         if (wl->regsva)
 878                 iounmap(wl->regsva);
 879
 880         wl->regsva = NULL;
 881 }
 882
 883 /*
 884 * called from both kernel as from this kernel module (error flow on attach)
 885 * precondition: perimeter lock is not acquired.
 886 */
 887 static void brcms_remove(struct pci_dev *pdev)
 888 {
 889         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 890         struct brcms_info *wl = hw->priv;
 891
 892         if (wl->wlc) {
 893                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 894                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 895                 ieee80211_unregister_hw(hw);
 896         }
 897         pci_disable_device(pdev);
 898
 899         brcms_free(wl);
 900
 901         pci_set_drvdata(pdev, NULL);
 902         ieee80211_free_hw(hw);
 903 }
 904
 905 static irqreturn_t brcms_isr(int irq, void *dev_id)
 906 {
 907         struct brcms_info *wl;
 908         bool ours, wantdpc;
 909
 910         wl = (struct brcms_info *) dev_id;
 911
 912         spin_lock(&wl->isr_lock);
 913
 914         /* call common first level interrupt handler */
 915         ours = brcms_c_isr(wl->wlc, &wantdpc);
 916         if (ours) {
 917                 /* if more to do... */
 918                 if (wantdpc) {
 919
 920                         /* ...and call the second level interrupt handler */
 921                         /* schedule dpc */
 922                         tasklet_schedule(&wl->tasklet);
 923                 }
 924         }
 925
 926         spin_unlock(&wl->isr_lock);
 927
 928         return IRQ_RETVAL(ours);
 929 }
 930
 931 /*
 932  * is called in brcms_pci_probe() context, therefore no locking required.
 933  */
 934 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 935 {
 936         struct brcms_info *wl = hw->priv;
 937         struct brcms_c_info *wlc = wl->wlc;
 938         struct ieee80211_supported_band *band;
 939         int has_5g = 0;
 940         u16 phy_type;
 941
 942         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 943         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 944
 945         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 946         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 947                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 948                 *band = brcms_band_2GHz_nphy_template;
 949                 if (phy_type == PHY_TYPE_LCN) {
 950                         /* Single stream */
 951                         band->ht_cap.mcs.rx_mask[1] = 0;
 952                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 953                 }
 954                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 955         } else {
 956                 return -EPERM;
 957         }
 958
 959         /* Assume all bands use the same phy.  True for 11n devices. */
 960         if (wl->pub->_nbands > 1) {
 961                 has_5g++;
 962                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 963                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 964                         *band = brcms_band_5GHz_nphy_template;
 965                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 966                 } else {
 967                         return -EPERM;
 968                 }
 969         }
 970         return 0;
 971 }
 972
 973 /*
 974  * is called in brcms_pci_probe() context, therefore no locking required.
 975  */
 976 static int ieee_hw_init(struct ieee80211_hw *hw)
 977 {
 978         hw->flags = IEEE80211_HW_SIGNAL_DBM
 979             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 980             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 981             | IEEE80211_HW_AMPDU_AGGREGATION;
 982
 983         hw->extra_tx_headroom = brcms_c_get_header_len();
 984         hw->queues = N_TX_QUEUES;
 985         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 986
 987         /* channel change time is dependent on chip and band  */
 988         hw->channel_change_time = 7 * 1000;
 989         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 990
 991         hw->rate_control_algorithm = "minstrel_ht";
 992
 993         hw->sta_data_size = 0;
 994         return ieee_hw_rate_init(hw);
 995 }
 996
 997 /**
 998  * attach to the WL device.
 999  *
1000  * Attach to the WL device identified by vendor and device parameters.
1001  * regs is a host accessible memory address pointing to WL device registers.
1002  *
1003  * brcms_attach is not defined as static because in the case where no bus
1004  * is defined, wl_attach will never be called, and thus, gcc will issue
1005  * a warning that this function is defined but not used if we declare
1006  * it as static.
1007  *
1008  *
1009  * is called in brcms_pci_probe() context, therefore no locking required.
1010  */
1011 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1012                                        resource_size_t regs,
1013                                        struct pci_dev *btparam, uint irq)
1014 {
1015         struct brcms_info *wl = NULL;
1016         int unit, err;
1017         struct ieee80211_hw *hw;
1018         u8 perm[ETH_ALEN];
1019
1020         unit = n_adapters_found;
1021         err = 0;
1022
1023         if (unit < 0)
1024                 return NULL;
1025
1026         /* allocate private info */
1027         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
1028         if (hw != NULL)
1029                 wl = hw->priv;
1030         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1031                 return NULL;
1032         wl->wiphy = hw->wiphy;
1033
1034         atomic_set(&wl->callbacks, 0);
1035
1036         /* setup the bottom half handler */
1037         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1038
1039         wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1040         if (wl->regsva == NULL) {
1041                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1042                 goto fail;
1043         }
1044         spin_lock_init(&wl->lock);
1045         spin_lock_init(&wl->isr_lock);
1046
1047         /* prepare ucode */
1048         if (brcms_request_fw(wl, btparam) < 0) {
1049                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1050                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1051                 brcms_release_fw(wl);
1052                 brcms_remove(btparam);
1053                 return NULL;
1054         }
1055
1056         /* common load-time initialization */
1057         wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1058                                  wl->regsva, btparam, &err);
1059         brcms_release_fw(wl);
1060         if (!wl->wlc) {
1061                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1062                           KBUILD_MODNAME, err);
1063                 goto fail;
1064         }
1065         wl->pub = brcms_c_pub(wl->wlc);
1066
1067         wl->pub->ieee_hw = hw;
1068
1069         /* register our interrupt handler */
1070         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1071                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1072                 goto fail;
1073         }
1074         wl->irq = irq;
1075
1076         /* register module */
1077         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1078
1079         if (ieee_hw_init(hw)) {
1080                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1081                           __func__);
1082                 goto fail;
1083         }
1084
1085         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1086         if (WARN_ON(!is_valid_ether_addr(perm)))
1087                 goto fail;
1088         SET_IEEE80211_PERM_ADDR(hw, perm);
1089
1090         err = ieee80211_register_hw(hw);
1091         if (err)
1092                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1093                           "%d\n", __func__, err);
1094
1095         if (wl->pub->srom_ccode[0])
1096                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1097         else
1098                 err = brcms_set_hint(wl, "US");
1099         if (err)
1100                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1101                           __func__, err);
1102
1103         n_adapters_found++;
1104         return wl;
1105
1106 fail:
1107         brcms_free(wl);
1108         return NULL;
1109 }
1110
1111
1112
1113 /**
1114  * determines if a device is a WL device, and if so, attaches it.
1115  *
1116  * This function determines if a device pointed to by pdev is a WL device,
1117  * and if so, performs a brcms_attach() on it.
1118  *
1119  * Perimeter lock is initialized in the course of this function.
1120  */
1121 static int __devinit
1122 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1123 {
1124         int rc;
1125         struct brcms_info *wl;
1126         struct ieee80211_hw *hw;
1127         u32 val;
1128
1129         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1130                pdev->bus->number, PCI_SLOT(pdev->devfn),
1131                PCI_FUNC(pdev->devfn), pdev->irq);
1132
1133         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1134             ((pdev->device != 0x0576) &&
1135              ((pdev->device & 0xff00) != 0x4300) &&
1136              ((pdev->device & 0xff00) != 0x4700) &&
1137              ((pdev->device < 43000) || (pdev->device > 43999))))
1138                 return -ENODEV;
1139
1140         rc = pci_enable_device(pdev);
1141         if (rc) {
1142                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1143                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1144                        PCI_FUNC(pdev->devfn));
1145                 return -ENODEV;
1146         }
1147         pci_set_master(pdev);
1148
1149         pci_read_config_dword(pdev, 0x40, &val);
1150         if ((val & 0x0000ff00) != 0)
1151                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1152
1153         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1154         if (!hw) {
1155                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1156                 return -ENOMEM;
1157         }
1158
1159         SET_IEEE80211_DEV(hw, &pdev->dev);
1160
1161         pci_set_drvdata(pdev, hw);
1162
1163         memset(hw->priv, 0, sizeof(*wl));
1164
1165         wl = brcms_attach(pdev->vendor, pdev->device,
1166                           pci_resource_start(pdev, 0), pdev,
1167                           pdev->irq);
1168
1169         if (!wl) {
1170                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1171                        __func__);
1172                 return -ENODEV;
1173         }
1174         return 0;
1175 }
1176
1177 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1178 {
1179         struct brcms_info *wl;
1180         struct ieee80211_hw *hw;
1181
1182         hw = pci_get_drvdata(pdev);
1183         wl = hw->priv;
1184         if (!wl) {
1185                 wiphy_err(wl->wiphy,
1186                           "brcms_suspend: pci_get_drvdata failed\n");
1187                 return -ENODEV;
1188         }
1189
1190         /* only need to flag hw is down for proper resume */
1191         spin_lock_bh(&wl->lock);
1192         wl->pub->hw_up = false;
1193         spin_unlock_bh(&wl->lock);
1194
1195         pci_save_state(pdev);
1196         pci_disable_device(pdev);
1197         return pci_set_power_state(pdev, PCI_D3hot);
1198 }
1199
1200 static int brcms_resume(struct pci_dev *pdev)
1201 {
1202         struct brcms_info *wl;
1203         struct ieee80211_hw *hw;
1204         int err = 0;
1205         u32 val;
1206
1207         hw = pci_get_drvdata(pdev);
1208         wl = hw->priv;
1209         if (!wl) {
1210                 wiphy_err(wl->wiphy,
1211                           "wl: brcms_resume: pci_get_drvdata failed\n");
1212                 return -ENODEV;
1213         }
1214
1215         err = pci_set_power_state(pdev, PCI_D0);
1216         if (err)
1217                 return err;
1218
1219         pci_restore_state(pdev);
1220
1221         err = pci_enable_device(pdev);
1222         if (err)
1223                 return err;
1224
1225         pci_set_master(pdev);
1226
1227         pci_read_config_dword(pdev, 0x40, &val);
1228         if ((val & 0x0000ff00) != 0)
1229                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1230
1231         /*
1232         *  done. driver will be put in up state
1233         *  in brcms_ops_add_interface() call.
1234         */
1235         return err;
1236 }
1237
1238 static struct pci_driver brcms_pci_driver = {
1239         .name     = KBUILD_MODNAME,
1240         .probe    = brcms_pci_probe,
1241         .suspend  = brcms_suspend,
1242         .resume   = brcms_resume,
1243         .remove   = __devexit_p(brcms_remove),
1244         .id_table = brcms_pci_id_table,
1245 };
1246
1247 /**
1248  * This is the main entry point for the WL driver.
1249  *
1250  * This function determines if a device pointed to by pdev is a WL device,
1251  * and if so, performs a brcms_attach() on it.
1252  *
1253  */
1254 static int __init brcms_module_init(void)
1255 {
1256         int error = -ENODEV;
1257
1258 #ifdef BCMDBG
1259         if (msglevel != 0xdeadbeef)
1260                 brcm_msg_level = msglevel;
1261 #endif                          /* BCMDBG */
1262
1263         error = pci_register_driver(&brcms_pci_driver);
1264         if (!error)
1265                 return 0;
1266
1267
1268
1269         return error;
1270 }
1271
1272 /**
1273  * This function unloads the WL driver from the system.
1274  *
1275  * This function unconditionally unloads the WL driver module from the
1276  * system.
1277  *
1278  */
1279 static void __exit brcms_module_exit(void)
1280 {
1281         pci_unregister_driver(&brcms_pci_driver);
1282
1283 }
1284
1285 module_init(brcms_module_init);
1286 module_exit(brcms_module_exit);
1287
1288 /*
1289  * precondition: perimeter lock has been acquired
1290  */
1291 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1292                          bool state, int prio)
1293 {
1294         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1295 }
1296
1297 /*
1298  * precondition: perimeter lock has been acquired
1299  */
1300 void brcms_init(struct brcms_info *wl)
1301 {
1302         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1303         brcms_reset(wl);
1304         brcms_c_init(wl->wlc, wl->mute_tx);
1305 }
1306
1307 /*
1308  * precondition: perimeter lock has been acquired
1309  */
1310 uint brcms_reset(struct brcms_info *wl)
1311 {
1312         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1313         brcms_c_reset(wl->wlc);
1314
1315         /* dpc will not be rescheduled */
1316         wl->resched = 0;
1317
1318         return 0;
1319 }
1320
1321 void brcms_fatal_error(struct brcms_info *wl)
1322 {
1323         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1324                   wl->wlc->pub->unit);
1325         brcms_reset(wl);
1326         ieee80211_restart_hw(wl->pub->ieee_hw);
1327 }
1328
1329 /*
1330  * These are interrupt on/off entry points. Disable interrupts
1331  * during interrupt state transition.
1332  */
1333 void brcms_intrson(struct brcms_info *wl)
1334 {
1335         unsigned long flags;
1336
1337         spin_lock_irqsave(&wl->isr_lock, flags);
1338         brcms_c_intrson(wl->wlc);
1339         spin_unlock_irqrestore(&wl->isr_lock, flags);
1340 }
1341
1342 u32 brcms_intrsoff(struct brcms_info *wl)
1343 {
1344         unsigned long flags;
1345         u32 status;
1346
1347         spin_lock_irqsave(&wl->isr_lock, flags);
1348         status = brcms_c_intrsoff(wl->wlc);
1349         spin_unlock_irqrestore(&wl->isr_lock, flags);
1350         return status;
1351 }
1352
1353 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1354 {
1355         unsigned long flags;
1356
1357         spin_lock_irqsave(&wl->isr_lock, flags);
1358         brcms_c_intrsrestore(wl->wlc, macintmask);
1359         spin_unlock_irqrestore(&wl->isr_lock, flags);
1360 }
1361
1362 /*
1363  * precondition: perimeter lock has been acquired
1364  */
1365 int brcms_up(struct brcms_info *wl)
1366 {
1367         int error = 0;
1368
1369         if (wl->pub->up)
1370                 return 0;
1371
1372         error = brcms_c_up(wl->wlc);
1373
1374         return error;
1375 }
1376
1377 /*
1378  * precondition: perimeter lock has been acquired
1379  */
1380 void brcms_down(struct brcms_info *wl)
1381 {
1382         uint callbacks, ret_val = 0;
1383
1384         /* call common down function */
1385         ret_val = brcms_c_down(wl->wlc);
1386         callbacks = atomic_read(&wl->callbacks) - ret_val;
1387
1388         /* wait for down callbacks to complete */
1389         spin_unlock_bh(&wl->lock);
1390
1391         /* For HIGH_only driver, it's important to actually schedule other work,
1392          * not just spin wait since everything runs at schedule level
1393          */
1394         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1395
1396         spin_lock_bh(&wl->lock);
1397 }
1398
1399 /*
1400 * precondition: perimeter lock is not acquired
1401  */
1402 static void _brcms_timer(struct work_struct *work)
1403 {
1404         struct brcms_timer *t = container_of(work, struct brcms_timer,
1405                                              dly_wrk.work);
1406
1407         spin_lock_bh(&t->wl->lock);
1408
1409         if (t->set) {
1410                 if (t->periodic) {
1411                         atomic_inc(&t->wl->callbacks);
1412                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1413                                                      &t->dly_wrk,
1414                                                      msecs_to_jiffies(t->ms));
1415                 } else {
1416                         t->set = false;
1417                 }
1418
1419                 t->fn(t->arg);
1420         }
1421
1422         atomic_dec(&t->wl->callbacks);
1423
1424         spin_unlock_bh(&t->wl->lock);
1425 }
1426
1427 /*
1428  * Adds a timer to the list. Caller supplies a timer function.
1429  * Is called from wlc.
1430  *
1431  * precondition: perimeter lock has been acquired
1432  */
1433 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1434                                      void (*fn) (void *arg),
1435                                      void *arg, const char *name)
1436 {
1437         struct brcms_timer *t;
1438
1439         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1440         if (!t)
1441                 return NULL;
1442
1443         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1444         t->wl = wl;
1445         t->fn = fn;
1446         t->arg = arg;
1447         t->next = wl->timers;
1448         wl->timers = t;
1449
1450 #ifdef BCMDBG
1451         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1452         if (t->name)
1453                 strcpy(t->name, name);
1454 #endif
1455
1456         return t;
1457 }
1458
1459 /*
1460  * adds only the kernel timer since it's going to be more accurate
1461  * as well as it's easier to make it periodic
1462  *
1463  * precondition: perimeter lock has been acquired
1464  */
1465 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1466 {
1467         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1468
1469 #ifdef BCMDBG
1470         if (t->set)
1471                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1472                           __func__, t->name, periodic);
1473 #endif
1474         t->ms = ms;
1475         t->periodic = (bool) periodic;
1476         t->set = true;
1477
1478         atomic_inc(&t->wl->callbacks);
1479
1480         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1481 }
1482
1483 /*
1484  * return true if timer successfully deleted, false if still pending
1485  *
1486  * precondition: perimeter lock has been acquired
1487  */
1488 bool brcms_del_timer(struct brcms_timer *t)
1489 {
1490         if (t->set) {
1491                 t->set = false;
1492                 if (!cancel_delayed_work(&t->dly_wrk))
1493                         return false;
1494
1495                 atomic_dec(&t->wl->callbacks);
1496         }
1497
1498         return true;
1499 }
1500
1501 /*
1502  * precondition: perimeter lock has been acquired
1503  */
1504 void brcms_free_timer(struct brcms_timer *t)
1505 {
1506         struct brcms_info *wl = t->wl;
1507         struct brcms_timer *tmp;
1508
1509         /* delete the timer in case it is active */
1510         brcms_del_timer(t);
1511
1512         if (wl->timers == t) {
1513                 wl->timers = wl->timers->next;
1514 #ifdef BCMDBG
1515                 kfree(t->name);
1516 #endif
1517                 kfree(t);
1518                 return;
1519
1520         }
1521
1522         tmp = wl->timers;
1523         while (tmp) {
1524                 if (tmp->next == t) {
1525                         tmp->next = t->next;
1526 #ifdef BCMDBG
1527                         kfree(t->name);
1528 #endif
1529                         kfree(t);
1530                         return;
1531                 }
1532                 tmp = tmp->next;
1533         }
1534
1535 }
1536
1537 /*
1538  * precondition: perimeter lock has been acquired
1539  */
1540 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1541 {
1542         int i, entry;
1543         const u8 *pdata;
1544         struct firmware_hdr *hdr;
1545         for (i = 0; i < wl->fw.fw_cnt; i++) {
1546                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1547                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1548                      entry++, hdr++) {
1549                         u32 len = le32_to_cpu(hdr->len);
1550                         if (le32_to_cpu(hdr->idx) == idx) {
1551                                 pdata = wl->fw.fw_bin[i]->data +
1552                                         le32_to_cpu(hdr->offset);
1553                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1554                                 if (*pbuf == NULL)
1555                                         goto fail;
1556
1557                                 return 0;
1558                         }
1559                 }
1560         }
1561         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1562                   idx);
1563         *pbuf = NULL;
1564 fail:
1565         return -ENODATA;
1566 }
1567
1568 /*
1569  * Precondition: Since this function is called in brcms_pci_probe() context,
1570  * no locking is required.
1571  */
1572 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1573 {
1574         int i, entry;
1575         const u8 *pdata;
1576         struct firmware_hdr *hdr;
1577         for (i = 0; i < wl->fw.fw_cnt; i++) {
1578                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1579                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1580                      entry++, hdr++) {
1581                         if (le32_to_cpu(hdr->idx) == idx) {
1582                                 pdata = wl->fw.fw_bin[i]->data +
1583                                         le32_to_cpu(hdr->offset);
1584                                 if (le32_to_cpu(hdr->len) != 4) {
1585                                         wiphy_err(wl->wiphy,
1586                                                   "ERROR: fw hdr len\n");
1587                                         return -ENOMSG;
1588                                 }
1589                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1590                                 return 0;
1591                         }
1592                 }
1593         }
1594         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1595         return -ENOMSG;
1596 }
1597
1598 /*
1599  * precondition: can both be called locked and unlocked
1600  */
1601 void brcms_ucode_free_buf(void *p)
1602 {
1603         kfree(p);
1604 }
1605
1606 /*
1607  * checks validity of all firmware images loaded from user space
1608  *
1609  * Precondition: Since this function is called in brcms_pci_probe() context,
1610  * no locking is required.
1611  */
1612 int brcms_check_firmwares(struct brcms_info *wl)
1613 {
1614         int i;
1615         int entry;
1616         int rc = 0;
1617         const struct firmware *fw;
1618         const struct firmware *fw_hdr;
1619         struct firmware_hdr *ucode_hdr;
1620         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1621                 fw =  wl->fw.fw_bin[i];
1622                 fw_hdr = wl->fw.fw_hdr[i];
1623                 if (fw == NULL && fw_hdr == NULL) {
1624                         break;
1625                 } else if (fw == NULL || fw_hdr == NULL) {
1626                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1627                                   __func__);
1628                         rc = -EBADF;
1629                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1630                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1631                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1632                                 sizeof(struct firmware_hdr));
1633                         rc = -EBADF;
1634                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1635                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1636                                   "%zu\n", __func__, fw->size);
1637                         rc = -EBADF;
1638                 } else {
1639                         /* check if ucode section overruns firmware image */
1640                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1641                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1642                              !rc; entry++, ucode_hdr++) {
1643                                 if (le32_to_cpu(ucode_hdr->offset) +
1644                                     le32_to_cpu(ucode_hdr->len) >
1645                                     fw->size) {
1646                                         wiphy_err(wl->wiphy,
1647                                                   "%s: conflicting bin/hdr\n",
1648                                                   __func__);
1649                                         rc = -EBADF;
1650                                 }
1651                         }
1652                 }
1653         }
1654         if (rc == 0 && wl->fw.fw_cnt != i) {
1655                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1656                         wl->fw.fw_cnt);
1657                 rc = -EBADF;
1658         }
1659         return rc;
1660 }
1661
1662 /*
1663  * precondition: perimeter lock has been acquired
1664  */
1665 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1666 {
1667         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1668
1669         spin_unlock_bh(&wl->lock);
1670         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1671         if (blocked)
1672                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1673         spin_lock_bh(&wl->lock);
1674         return blocked;
1675 }
1676
1677 /*
1678  * precondition: perimeter lock has been acquired
1679  */
1680 void brcms_msleep(struct brcms_info *wl, uint ms)
1681 {
1682         spin_unlock_bh(&wl->lock);
1683         msleep(ms);
1684         spin_lock_bh(&wl->lock);
1685 }