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 <net/mac80211.h>
  25 #include <defs.h>
  26 #include "nicpci.h"
  27 #include "phy/phy_int.h"
  28 #include "d11.h"
  29 #include "channel.h"
  30 #include "scb.h"
  31 #include "pub.h"
  32 #include "ucode_loader.h"
  33 #include "mac80211_if.h"
  34 #include "main.h"
  35
  36 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  37
  38 /* Flags we support */
  39 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  40         FIF_ALLMULTI | \
  41         FIF_FCSFAIL | \
  42         FIF_PLCPFAIL | \
  43         FIF_CONTROL | \
  44         FIF_OTHER_BSS | \
  45         FIF_BCN_PRBRESP_PROMISC)
  46
  47 #define CHAN2GHZ(channel, freqency, chflags)  { \
  48         .band = IEEE80211_BAND_2GHZ, \
  49         .center_freq = (freqency), \
  50         .hw_value = (channel), \
  51         .flags = chflags, \
  52         .max_antenna_gain = 0, \
  53         .max_power = 19, \
  54 }
  55
  56 #define CHAN5GHZ(channel, chflags)  { \
  57         .band = IEEE80211_BAND_5GHZ, \
  58         .center_freq = 5000 + 5*(channel), \
  59         .hw_value = (channel), \
  60         .flags = chflags, \
  61         .max_antenna_gain = 0, \
  62         .max_power = 21, \
  63 }
  64
  65 #define RATE(rate100m, _flags) { \
  66         .bitrate = (rate100m), \
  67         .flags = (_flags), \
  68         .hw_value = (rate100m / 5), \
  69 }
  70
  71 struct firmware_hdr {
  72         __le32 offset;
  73         __le32 len;
  74         __le32 idx;
  75 };
  76
  77 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  78         "brcm/bcm43xx",
  79         NULL
  80 };
  81
  82 static int n_adapters_found;
  83
  84 MODULE_AUTHOR("Broadcom Corporation");
  85 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  86 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  87 MODULE_LICENSE("Dual BSD/GPL");
  88
  89 /* recognized PCI IDs */
  90 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
  91         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
  92         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
  93         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
  94         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
  95         {0}
  96 };
  97
  98 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
  99
 100 #ifdef BCMDBG
 101 static int msglevel = 0xdeadbeef;
 102 module_param(msglevel, int, 0);
 103 #endif                          /* BCMDBG */
 104
 105 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 106         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 107         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 110         CHAN2GHZ(5, 2432, 0),
 111         CHAN2GHZ(6, 2437, 0),
 112         CHAN2GHZ(7, 2442, 0),
 113         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 114         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 117         CHAN2GHZ(12, 2467,
 118                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 119                  IEEE80211_CHAN_NO_HT40PLUS),
 120         CHAN2GHZ(13, 2472,
 121                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 122                  IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(14, 2484,
 124                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 125                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 126 };
 127
 128 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 129         /* UNII-1 */
 130         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 131         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 132         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 133         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 134         /* UNII-2 */
 135         CHAN5GHZ(52,
 136                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 137                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 138         CHAN5GHZ(56,
 139                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 140                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(60,
 142                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 143                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 144         CHAN5GHZ(64,
 145                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 146                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 147         /* MID */
 148         CHAN5GHZ(100,
 149                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 150                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 151         CHAN5GHZ(104,
 152                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 153                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 154         CHAN5GHZ(108,
 155                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 156                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 157         CHAN5GHZ(112,
 158                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 159                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 160         CHAN5GHZ(116,
 161                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 162                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 163         CHAN5GHZ(120,
 164                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 165                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 166         CHAN5GHZ(124,
 167                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 168                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 169         CHAN5GHZ(128,
 170                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 171                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 172         CHAN5GHZ(132,
 173                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 174                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 175         CHAN5GHZ(136,
 176                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 177                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 178         CHAN5GHZ(140,
 179                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 180                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 181                  IEEE80211_CHAN_NO_HT40MINUS),
 182         /* UNII-3 */
 183         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 185         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 188 };
 189
 190 /*
 191  * The rate table is used for both 2.4G and 5G rates. The
 192  * latter being a subset as it does not support CCK rates.
 193  */
 194 static struct ieee80211_rate legacy_ratetable[] = {
 195         RATE(10, 0),
 196         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 197         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 199         RATE(60, 0),
 200         RATE(90, 0),
 201         RATE(120, 0),
 202         RATE(180, 0),
 203         RATE(240, 0),
 204         RATE(360, 0),
 205         RATE(480, 0),
 206         RATE(540, 0),
 207 };
 208
 209 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 210         .band = IEEE80211_BAND_2GHZ,
 211         .channels = brcms_2ghz_chantable,
 212         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 213         .bitrates = legacy_ratetable,
 214         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 215         .ht_cap = {
 216                    /* from include/linux/ieee80211.h */
 217                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 218                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 219                    .ht_supported = true,
 220                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 221                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 222                    .mcs = {
 223                            /* placeholders for now */
 224                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 225                            .rx_highest = cpu_to_le16(500),
 226                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 227                    }
 228 };
 229
 230 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 231         .band = IEEE80211_BAND_5GHZ,
 232         .channels = brcms_5ghz_nphy_chantable,
 233         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 234         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 235         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 236                         BRCMS_LEGACY_5G_RATE_OFFSET,
 237         .ht_cap = {
 238                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 239                           IEEE80211_HT_CAP_SGI_40,
 240                    .ht_supported = true,
 241                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 242                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 243                    .mcs = {
 244                            /* placeholders for now */
 245                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 246                            .rx_highest = cpu_to_le16(500),
 247                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 248                    }
 249 };
 250
 251 /* flags the given rate in rateset as requested */
 252 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 253 {
 254         u32 i;
 255
 256         for (i = 0; i < rs->count; i++) {
 257                 if (rate != (rs->rates[i] & 0x7f))
 258                         continue;
 259
 260                 if (is_br)
 261                         rs->rates[i] |= BRCMS_RATE_FLAG;
 262                 else
 263                         rs->rates[i] &= BRCMS_RATE_MASK;
 264                 return;
 265         }
 266 }
 267
 268 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 269 {
 270         struct brcms_info *wl = hw->priv;
 271
 272         spin_lock_bh(&wl->lock);
 273         if (!wl->pub->up) {
 274                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 275                 kfree_skb(skb);
 276                 goto done;
 277         }
 278         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 279  done:
 280         spin_unlock_bh(&wl->lock);
 281 }
 282
 283 static int brcms_ops_start(struct ieee80211_hw *hw)
 284 {
 285         struct brcms_info *wl = hw->priv;
 286         bool blocked;
 287         int err;
 288
 289         ieee80211_wake_queues(hw);
 290         spin_lock_bh(&wl->lock);
 291         blocked = brcms_rfkill_set_hw_state(wl);
 292         spin_unlock_bh(&wl->lock);
 293         if (!blocked)
 294                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 295
 296         spin_lock_bh(&wl->lock);
 297         /* avoid acknowledging frames before a non-monitor device is added */
 298         wl->mute_tx = true;
 299
 300         if (!wl->pub->up)
 301                 err = brcms_up(wl);
 302         else
 303                 err = -ENODEV;
 304         spin_unlock_bh(&wl->lock);
 305
 306         if (err != 0)
 307                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 308                           err);
 309         return err;
 310 }
 311
 312 static void brcms_ops_stop(struct ieee80211_hw *hw)
 313 {
 314         struct brcms_info *wl = hw->priv;
 315         int status;
 316
 317         ieee80211_stop_queues(hw);
 318
 319         if (wl->wlc == NULL)
 320                 return;
 321
 322         spin_lock_bh(&wl->lock);
 323         status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
 324                                    wl->wlc->hw->deviceid);
 325         spin_unlock_bh(&wl->lock);
 326         if (!status) {
 327                 wiphy_err(wl->wiphy,
 328                           "wl: brcms_ops_stop: chipmatch failed\n");
 329                 return;
 330         }
 331
 332         /* put driver in down state */
 333         spin_lock_bh(&wl->lock);
 334         brcms_down(wl);
 335         spin_unlock_bh(&wl->lock);
 336 }
 337
 338 static int
 339 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 340 {
 341         struct brcms_info *wl = hw->priv;
 342
 343         /* Just STA for now */
 344         if (vif->type != NL80211_IFTYPE_STATION) {
 345                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 346                           " STA for now\n", __func__, vif->type);
 347                 return -EOPNOTSUPP;
 348         }
 349
 350         wl->mute_tx = false;
 351         brcms_c_mute(wl->wlc, false);
 352
 353         return 0;
 354 }
 355
 356 static void
 357 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 358 {
 359 }
 360
 361 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 362 {
 363         struct ieee80211_conf *conf = &hw->conf;
 364         struct brcms_info *wl = hw->priv;
 365         int err = 0;
 366         int new_int;
 367         struct wiphy *wiphy = hw->wiphy;
 368
 369         spin_lock_bh(&wl->lock);
 370         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 371                 brcms_c_set_beacon_listen_interval(wl->wlc,
 372                                                    conf->listen_interval);
 373         }
 374         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 375                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 376                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 377                           "true" : "false");
 378         if (changed & IEEE80211_CONF_CHANGE_PS)
 379                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 380                           __func__, conf->flags & IEEE80211_CONF_PS ?
 381                           "true" : "false");
 382
 383         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 384                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 385                 if (err < 0) {
 386                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 387                                   __func__);
 388                         goto config_out;
 389                 }
 390                 new_int = brcms_c_get_tx_power(wl->wlc);
 391                 if (new_int != conf->power_level)
 392                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 393                                   "\n", __func__, conf->power_level,
 394                                   new_int);
 395         }
 396         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 397                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 398                     conf->channel_type == NL80211_CHAN_NO_HT)
 399                         err = brcms_c_set_channel(wl->wlc,
 400                                                   conf->channel->hw_value);
 401                 else
 402                         err = -ENOTSUPP;
 403         }
 404         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 405                 err = brcms_c_set_rate_limit(wl->wlc,
 406                                              conf->short_frame_max_tx_count,
 407                                              conf->long_frame_max_tx_count);
 408
 409  config_out:
 410         spin_unlock_bh(&wl->lock);
 411         return err;
 412 }
 413
 414 static void
 415 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 416                         struct ieee80211_vif *vif,
 417                         struct ieee80211_bss_conf *info, u32 changed)
 418 {
 419         struct brcms_info *wl = hw->priv;
 420         struct wiphy *wiphy = hw->wiphy;
 421
 422         if (changed & BSS_CHANGED_ASSOC) {
 423                 /* association status changed (associated/disassociated)
 424                  * also implies a change in the AID.
 425                  */
 426                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 427                           __func__, info->assoc ? "" : "dis");
 428                 spin_lock_bh(&wl->lock);
 429                 brcms_c_associate_upd(wl->wlc, info->assoc);
 430                 spin_unlock_bh(&wl->lock);
 431         }
 432         if (changed & BSS_CHANGED_ERP_SLOT) {
 433                 s8 val;
 434
 435                 /* slot timing changed */
 436                 if (info->use_short_slot)
 437                         val = 1;
 438                 else
 439                         val = 0;
 440                 spin_lock_bh(&wl->lock);
 441                 brcms_c_set_shortslot_override(wl->wlc, val);
 442                 spin_unlock_bh(&wl->lock);
 443         }
 444
 445         if (changed & BSS_CHANGED_HT) {
 446                 /* 802.11n parameters changed */
 447                 u16 mode = info->ht_operation_mode;
 448
 449                 spin_lock_bh(&wl->lock);
 450                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 451                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 452                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 453                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 454                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 455                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 456                 spin_unlock_bh(&wl->lock);
 457         }
 458         if (changed & BSS_CHANGED_BASIC_RATES) {
 459                 struct ieee80211_supported_band *bi;
 460                 u32 br_mask, i;
 461                 u16 rate;
 462                 struct brcm_rateset rs;
 463                 int error;
 464
 465                 /* retrieve the current rates */
 466                 spin_lock_bh(&wl->lock);
 467                 brcms_c_get_current_rateset(wl->wlc, &rs);
 468                 spin_unlock_bh(&wl->lock);
 469
 470                 br_mask = info->basic_rates;
 471                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 472                 for (i = 0; i < bi->n_bitrates; i++) {
 473                         /* convert to internal rate value */
 474                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 475
 476                         /* set/clear basic rate flag */
 477                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 478                         br_mask >>= 1;
 479                 }
 480
 481                 /* update the rate set */
 482                 spin_lock_bh(&wl->lock);
 483                 error = brcms_c_set_rateset(wl->wlc, &rs);
 484                 spin_unlock_bh(&wl->lock);
 485                 if (error)
 486                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 487                                   error);
 488         }
 489         if (changed & BSS_CHANGED_BEACON_INT) {
 490                 /* Beacon interval changed */
 491                 spin_lock_bh(&wl->lock);
 492                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 493                 spin_unlock_bh(&wl->lock);
 494         }
 495         if (changed & BSS_CHANGED_BSSID) {
 496                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 497                 spin_lock_bh(&wl->lock);
 498                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 499                 spin_unlock_bh(&wl->lock);
 500         }
 501         if (changed & BSS_CHANGED_BEACON)
 502                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 503                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 504
 505         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 506                 /* Beaconing should be enabled/disabled (beaconing modes) */
 507                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 508                           info->enable_beacon ? "true" : "false");
 509         }
 510
 511         if (changed & BSS_CHANGED_CQM) {
 512                 /* Connection quality monitor config changed */
 513                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 514                           " (implement)\n", __func__, info->cqm_rssi_thold,
 515                           info->cqm_rssi_hyst);
 516         }
 517
 518         if (changed & BSS_CHANGED_IBSS) {
 519                 /* IBSS join status changed */
 520                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 521                           info->ibss_joined ? "true" : "false");
 522         }
 523
 524         if (changed & BSS_CHANGED_ARP_FILTER) {
 525                 /* Hardware ARP filter address list or state changed */
 526                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 527                           " (implement)\n", __func__, info->arp_filter_enabled ?
 528                           "true" : "false", info->arp_addr_cnt);
 529         }
 530
 531         if (changed & BSS_CHANGED_QOS) {
 532                 /*
 533                  * QoS for this association was enabled/disabled.
 534                  * Note that it is only ever disabled for station mode.
 535                  */
 536                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 537                           info->qos ? "true" : "false");
 538         }
 539         return;
 540 }
 541
 542 static void
 543 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 544                         unsigned int changed_flags,
 545                         unsigned int *total_flags, u64 multicast)
 546 {
 547         struct brcms_info *wl = hw->priv;
 548         struct wiphy *wiphy = hw->wiphy;
 549
 550         changed_flags &= MAC_FILTERS;
 551         *total_flags &= MAC_FILTERS;
 552         if (changed_flags & FIF_PROMISC_IN_BSS)
 553                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 554         if (changed_flags & FIF_ALLMULTI)
 555                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 556         if (changed_flags & FIF_FCSFAIL)
 557                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 558         if (changed_flags & FIF_PLCPFAIL)
 559                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 560         if (changed_flags & FIF_CONTROL)
 561                 wiphy_err(wiphy, "FIF_CONTROL\n");
 562         if (changed_flags & FIF_OTHER_BSS)
 563                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 564         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 565                 spin_lock_bh(&wl->lock);
 566                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 567                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 568                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 569                 } else {
 570                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 571                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 572                 }
 573                 spin_unlock_bh(&wl->lock);
 574         }
 575         return;
 576 }
 577
 578 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 579 {
 580         struct brcms_info *wl = hw->priv;
 581         spin_lock_bh(&wl->lock);
 582         brcms_c_scan_start(wl->wlc);
 583         spin_unlock_bh(&wl->lock);
 584         return;
 585 }
 586
 587 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 588 {
 589         struct brcms_info *wl = hw->priv;
 590         spin_lock_bh(&wl->lock);
 591         brcms_c_scan_stop(wl->wlc);
 592         spin_unlock_bh(&wl->lock);
 593         return;
 594 }
 595
 596 static int
 597 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 598                   const struct ieee80211_tx_queue_params *params)
 599 {
 600         struct brcms_info *wl = hw->priv;
 601
 602         spin_lock_bh(&wl->lock);
 603         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 604         spin_unlock_bh(&wl->lock);
 605
 606         return 0;
 607 }
 608
 609 static int
 610 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 611                struct ieee80211_sta *sta)
 612 {
 613         struct brcms_info *wl = hw->priv;
 614         struct scb *scb = &wl->wlc->pri_scb;
 615
 616         brcms_c_init_scb(scb);
 617
 618         wl->pub->global_ampdu = &(scb->scb_ampdu);
 619         wl->pub->global_ampdu->scb = scb;
 620         wl->pub->global_ampdu->max_pdu = 16;
 621
 622         sta->ht_cap.ht_supported = true;
 623         sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 624         sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY;
 625         sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD |
 626             IEEE80211_HT_CAP_SGI_20 |
 627             IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT;
 628
 629         /*
 630          * minstrel_ht initiates addBA on our behalf by calling
 631          * ieee80211_start_tx_ba_session()
 632          */
 633         return 0;
 634 }
 635
 636 static int
 637 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 638                     struct ieee80211_vif *vif,
 639                     enum ieee80211_ampdu_mlme_action action,
 640                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 641                     u8 buf_size)
 642 {
 643         struct brcms_info *wl = hw->priv;
 644         struct scb *scb = &wl->wlc->pri_scb;
 645         int status;
 646
 647         if (WARN_ON(scb->magic != SCB_MAGIC))
 648                 return -EIDRM;
 649         switch (action) {
 650         case IEEE80211_AMPDU_RX_START:
 651                 break;
 652         case IEEE80211_AMPDU_RX_STOP:
 653                 break;
 654         case IEEE80211_AMPDU_TX_START:
 655                 spin_lock_bh(&wl->lock);
 656                 status = brcms_c_aggregatable(wl->wlc, tid);
 657                 spin_unlock_bh(&wl->lock);
 658                 if (!status) {
 659                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 660                                   tid);
 661                         return -EINVAL;
 662                 }
 663                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 664                 break;
 665
 666         case IEEE80211_AMPDU_TX_STOP:
 667                 spin_lock_bh(&wl->lock);
 668                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 669                 spin_unlock_bh(&wl->lock);
 670                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 671                 break;
 672         case IEEE80211_AMPDU_TX_OPERATIONAL:
 673                 /*
 674                  * BA window size from ADDBA response ('buf_size') defines how
 675                  * many outstanding MPDUs are allowed for the BA stream by
 676                  * recipient and traffic class. 'ampdu_factor' gives maximum
 677                  * AMPDU size.
 678                  */
 679                 spin_lock_bh(&wl->lock);
 680                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 681                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 682                          sta->ht_cap.ampdu_factor)) - 1);
 683                 spin_unlock_bh(&wl->lock);
 684                 /* Power save wakeup */
 685                 break;
 686         default:
 687                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 688                           __func__);
 689         }
 690
 691         return 0;
 692 }
 693
 694 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 695 {
 696         struct brcms_info *wl = hw->priv;
 697         bool blocked;
 698
 699         spin_lock_bh(&wl->lock);
 700         blocked = brcms_c_check_radio_disabled(wl->wlc);
 701         spin_unlock_bh(&wl->lock);
 702
 703         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 704 }
 705
 706 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 707 {
 708         struct brcms_info *wl = hw->priv;
 709
 710         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 711
 712         /* wait for packet queue and dma fifos to run empty */
 713         spin_lock_bh(&wl->lock);
 714         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 715         spin_unlock_bh(&wl->lock);
 716 }
 717
 718 static const struct ieee80211_ops brcms_ops = {
 719         .tx = brcms_ops_tx,
 720         .start = brcms_ops_start,
 721         .stop = brcms_ops_stop,
 722         .add_interface = brcms_ops_add_interface,
 723         .remove_interface = brcms_ops_remove_interface,
 724         .config = brcms_ops_config,
 725         .bss_info_changed = brcms_ops_bss_info_changed,
 726         .configure_filter = brcms_ops_configure_filter,
 727         .sw_scan_start = brcms_ops_sw_scan_start,
 728         .sw_scan_complete = brcms_ops_sw_scan_complete,
 729         .conf_tx = brcms_ops_conf_tx,
 730         .sta_add = brcms_ops_sta_add,
 731         .ampdu_action = brcms_ops_ampdu_action,
 732         .rfkill_poll = brcms_ops_rfkill_poll,
 733         .flush = brcms_ops_flush,
 734 };
 735
 736 /*
 737  * is called in brcms_pci_probe() context, therefore no locking required.
 738  */
 739 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 740 {
 741         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 742 }
 743
 744 void brcms_dpc(unsigned long data)
 745 {
 746         struct brcms_info *wl;
 747
 748         wl = (struct brcms_info *) data;
 749
 750         spin_lock_bh(&wl->lock);
 751
 752         /* call the common second level interrupt handler */
 753         if (wl->pub->up) {
 754                 if (wl->resched) {
 755                         unsigned long flags;
 756
 757                         spin_lock_irqsave(&wl->isr_lock, flags);
 758                         brcms_c_intrsupd(wl->wlc);
 759                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 760                 }
 761
 762                 wl->resched = brcms_c_dpc(wl->wlc, true);
 763         }
 764
 765         /* brcms_c_dpc() may bring the driver down */
 766         if (!wl->pub->up)
 767                 goto done;
 768
 769         /* re-schedule dpc */
 770         if (wl->resched)
 771                 tasklet_schedule(&wl->tasklet);
 772         else
 773                 /* re-enable interrupts */
 774                 brcms_intrson(wl);
 775
 776  done:
 777         spin_unlock_bh(&wl->lock);
 778 }
 779
 780 /*
 781  * Precondition: Since this function is called in brcms_pci_probe() context,
 782  * no locking is required.
 783  */
 784 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 785 {
 786         int status;
 787         struct device *device = &pdev->dev;
 788         char fw_name[100];
 789         int i;
 790
 791         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 792         for (i = 0; i < MAX_FW_IMAGES; i++) {
 793                 if (brcms_firmwares[i] == NULL)
 794                         break;
 795                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 796                         UCODE_LOADER_API_VER);
 797                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 798                 if (status) {
 799                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 800                                   KBUILD_MODNAME, fw_name);
 801                         return status;
 802                 }
 803                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 804                         UCODE_LOADER_API_VER);
 805                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 806                 if (status) {
 807                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 808                                   KBUILD_MODNAME, fw_name);
 809                         return status;
 810                 }
 811                 wl->fw.hdr_num_entries[i] =
 812                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 813         }
 814         wl->fw.fw_cnt = i;
 815         return brcms_ucode_data_init(wl, &wl->ucode);
 816 }
 817
 818 /*
 819  * Precondition: Since this function is called in brcms_pci_probe() context,
 820  * no locking is required.
 821  */
 822 static void brcms_release_fw(struct brcms_info *wl)
 823 {
 824         int i;
 825         for (i = 0; i < MAX_FW_IMAGES; i++) {
 826                 release_firmware(wl->fw.fw_bin[i]);
 827                 release_firmware(wl->fw.fw_hdr[i]);
 828         }
 829 }
 830
 831 /**
 832  * This function frees the WL per-device resources.
 833  *
 834  * This function frees resources owned by the WL device pointed to
 835  * by the wl parameter.
 836  *
 837  * precondition: can both be called locked and unlocked
 838  *
 839  */
 840 static void brcms_free(struct brcms_info *wl)
 841 {
 842         struct brcms_timer *t, *next;
 843
 844         /* free ucode data */
 845         if (wl->fw.fw_cnt)
 846                 brcms_ucode_data_free(&wl->ucode);
 847         if (wl->irq)
 848                 free_irq(wl->irq, wl);
 849
 850         /* kill dpc */
 851         tasklet_kill(&wl->tasklet);
 852
 853         if (wl->pub)
 854                 brcms_c_module_unregister(wl->pub, "linux", wl);
 855
 856         /* free common resources */
 857         if (wl->wlc) {
 858                 brcms_c_detach(wl->wlc);
 859                 wl->wlc = NULL;
 860                 wl->pub = NULL;
 861         }
 862
 863         /* virtual interface deletion is deferred so we cannot spinwait */
 864
 865         /* wait for all pending callbacks to complete */
 866         while (atomic_read(&wl->callbacks) > 0)
 867                 schedule();
 868
 869         /* free timers */
 870         for (t = wl->timers; t; t = next) {
 871                 next = t->next;
 872 #ifdef BCMDBG
 873                 kfree(t->name);
 874 #endif
 875                 kfree(t);
 876         }
 877
 878         /*
 879          * unregister_netdev() calls get_stats() which may read chip
 880          * registers so we cannot unmap the chip registers until
 881          * after calling unregister_netdev() .
 882          */
 883         if (wl->regsva)
 884                 iounmap(wl->regsva);
 885
 886         wl->regsva = NULL;
 887 }
 888
 889 /*
 890 * called from both kernel as from this kernel module (error flow on attach)
 891 * precondition: perimeter lock is not acquired.
 892 */
 893 static void brcms_remove(struct pci_dev *pdev)
 894 {
 895         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 896         struct brcms_info *wl = hw->priv;
 897
 898         if (wl->wlc) {
 899                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 900                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 901                 ieee80211_unregister_hw(hw);
 902         }
 903         pci_disable_device(pdev);
 904
 905         brcms_free(wl);
 906
 907         pci_set_drvdata(pdev, NULL);
 908         ieee80211_free_hw(hw);
 909 }
 910
 911 static irqreturn_t brcms_isr(int irq, void *dev_id)
 912 {
 913         struct brcms_info *wl;
 914         bool ours, wantdpc;
 915
 916         wl = (struct brcms_info *) dev_id;
 917
 918         spin_lock(&wl->isr_lock);
 919
 920         /* call common first level interrupt handler */
 921         ours = brcms_c_isr(wl->wlc, &wantdpc);
 922         if (ours) {
 923                 /* if more to do... */
 924                 if (wantdpc) {
 925
 926                         /* ...and call the second level interrupt handler */
 927                         /* schedule dpc */
 928                         tasklet_schedule(&wl->tasklet);
 929                 }
 930         }
 931
 932         spin_unlock(&wl->isr_lock);
 933
 934         return IRQ_RETVAL(ours);
 935 }
 936
 937 /*
 938  * is called in brcms_pci_probe() context, therefore no locking required.
 939  */
 940 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 941 {
 942         struct brcms_info *wl = hw->priv;
 943         struct brcms_c_info *wlc = wl->wlc;
 944         struct ieee80211_supported_band *band;
 945         int has_5g = 0;
 946         u16 phy_type;
 947
 948         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 949         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 950
 951         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 952         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 953                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 954                 *band = brcms_band_2GHz_nphy_template;
 955                 if (phy_type == PHY_TYPE_LCN) {
 956                         /* Single stream */
 957                         band->ht_cap.mcs.rx_mask[1] = 0;
 958                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 959                 }
 960                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 961         } else {
 962                 return -EPERM;
 963         }
 964
 965         /* Assume all bands use the same phy.  True for 11n devices. */
 966         if (wl->pub->_nbands > 1) {
 967                 has_5g++;
 968                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 969                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 970                         *band = brcms_band_5GHz_nphy_template;
 971                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 972                 } else {
 973                         return -EPERM;
 974                 }
 975         }
 976         return 0;
 977 }
 978
 979 /*
 980  * is called in brcms_pci_probe() context, therefore no locking required.
 981  */
 982 static int ieee_hw_init(struct ieee80211_hw *hw)
 983 {
 984         hw->flags = IEEE80211_HW_SIGNAL_DBM
 985             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 986             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 987             | IEEE80211_HW_AMPDU_AGGREGATION;
 988
 989         hw->extra_tx_headroom = brcms_c_get_header_len();
 990         hw->queues = N_TX_QUEUES;
 991         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 992
 993         /* channel change time is dependent on chip and band  */
 994         hw->channel_change_time = 7 * 1000;
 995         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 996
 997         hw->rate_control_algorithm = "minstrel_ht";
 998
 999         hw->sta_data_size = 0;
1000         return ieee_hw_rate_init(hw);
1001 }
1002
1003 /**
1004  * attach to the WL device.
1005  *
1006  * Attach to the WL device identified by vendor and device parameters.
1007  * regs is a host accessible memory address pointing to WL device registers.
1008  *
1009  * brcms_attach is not defined as static because in the case where no bus
1010  * is defined, wl_attach will never be called, and thus, gcc will issue
1011  * a warning that this function is defined but not used if we declare
1012  * it as static.
1013  *
1014  *
1015  * is called in brcms_pci_probe() context, therefore no locking required.
1016  */
1017 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1018                                        resource_size_t regs,
1019                                        struct pci_dev *btparam, uint irq)
1020 {
1021         struct brcms_info *wl = NULL;
1022         int unit, err;
1023         struct ieee80211_hw *hw;
1024         u8 perm[ETH_ALEN];
1025
1026         unit = n_adapters_found;
1027         err = 0;
1028
1029         if (unit < 0)
1030                 return NULL;
1031
1032         /* allocate private info */
1033         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
1034         if (hw != NULL)
1035                 wl = hw->priv;
1036         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1037                 return NULL;
1038         wl->wiphy = hw->wiphy;
1039
1040         atomic_set(&wl->callbacks, 0);
1041
1042         /* setup the bottom half handler */
1043         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1044
1045         wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1046         if (wl->regsva == NULL) {
1047                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1048                 goto fail;
1049         }
1050         spin_lock_init(&wl->lock);
1051         spin_lock_init(&wl->isr_lock);
1052
1053         /* prepare ucode */
1054         if (brcms_request_fw(wl, btparam) < 0) {
1055                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1056                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1057                 brcms_release_fw(wl);
1058                 brcms_remove(btparam);
1059                 return NULL;
1060         }
1061
1062         /* common load-time initialization */
1063         wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1064                                  wl->regsva, btparam, &err);
1065         brcms_release_fw(wl);
1066         if (!wl->wlc) {
1067                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1068                           KBUILD_MODNAME, err);
1069                 goto fail;
1070         }
1071         wl->pub = brcms_c_pub(wl->wlc);
1072
1073         wl->pub->ieee_hw = hw;
1074
1075         /* register our interrupt handler */
1076         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1077                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1078                 goto fail;
1079         }
1080         wl->irq = irq;
1081
1082         /* register module */
1083         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1084
1085         if (ieee_hw_init(hw)) {
1086                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1087                           __func__);
1088                 goto fail;
1089         }
1090
1091         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1092         if (WARN_ON(!is_valid_ether_addr(perm)))
1093                 goto fail;
1094         SET_IEEE80211_PERM_ADDR(hw, perm);
1095
1096         err = ieee80211_register_hw(hw);
1097         if (err)
1098                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1099                           "%d\n", __func__, err);
1100
1101         if (wl->pub->srom_ccode[0])
1102                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1103         else
1104                 err = brcms_set_hint(wl, "US");
1105         if (err)
1106                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1107                           __func__, err);
1108
1109         n_adapters_found++;
1110         return wl;
1111
1112 fail:
1113         brcms_free(wl);
1114         return NULL;
1115 }
1116
1117
1118
1119 /**
1120  * determines if a device is a WL device, and if so, attaches it.
1121  *
1122  * This function determines if a device pointed to by pdev is a WL device,
1123  * and if so, performs a brcms_attach() on it.
1124  *
1125  * Perimeter lock is initialized in the course of this function.
1126  */
1127 static int __devinit
1128 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1129 {
1130         int rc;
1131         struct brcms_info *wl;
1132         struct ieee80211_hw *hw;
1133         u32 val;
1134
1135         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1136                pdev->bus->number, PCI_SLOT(pdev->devfn),
1137                PCI_FUNC(pdev->devfn), pdev->irq);
1138
1139         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1140             ((pdev->device != 0x0576) &&
1141              ((pdev->device & 0xff00) != 0x4300) &&
1142              ((pdev->device & 0xff00) != 0x4700) &&
1143              ((pdev->device < 43000) || (pdev->device > 43999))))
1144                 return -ENODEV;
1145
1146         rc = pci_enable_device(pdev);
1147         if (rc) {
1148                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1149                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1150                        PCI_FUNC(pdev->devfn));
1151                 return -ENODEV;
1152         }
1153         pci_set_master(pdev);
1154
1155         pci_read_config_dword(pdev, 0x40, &val);
1156         if ((val & 0x0000ff00) != 0)
1157                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1158
1159         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1160         if (!hw) {
1161                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1162                 return -ENOMEM;
1163         }
1164
1165         SET_IEEE80211_DEV(hw, &pdev->dev);
1166
1167         pci_set_drvdata(pdev, hw);
1168
1169         memset(hw->priv, 0, sizeof(*wl));
1170
1171         wl = brcms_attach(pdev->vendor, pdev->device,
1172                           pci_resource_start(pdev, 0), pdev,
1173                           pdev->irq);
1174
1175         if (!wl) {
1176                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1177                        __func__);
1178                 return -ENODEV;
1179         }
1180         return 0;
1181 }
1182
1183 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1184 {
1185         struct brcms_info *wl;
1186         struct ieee80211_hw *hw;
1187
1188         hw = pci_get_drvdata(pdev);
1189         wl = hw->priv;
1190         if (!wl) {
1191                 wiphy_err(wl->wiphy,
1192                           "brcms_suspend: pci_get_drvdata failed\n");
1193                 return -ENODEV;
1194         }
1195
1196         /* only need to flag hw is down for proper resume */
1197         spin_lock_bh(&wl->lock);
1198         wl->pub->hw_up = false;
1199         spin_unlock_bh(&wl->lock);
1200
1201         pci_save_state(pdev);
1202         pci_disable_device(pdev);
1203         return pci_set_power_state(pdev, PCI_D3hot);
1204 }
1205
1206 static int brcms_resume(struct pci_dev *pdev)
1207 {
1208         struct brcms_info *wl;
1209         struct ieee80211_hw *hw;
1210         int err = 0;
1211         u32 val;
1212
1213         hw = pci_get_drvdata(pdev);
1214         wl = hw->priv;
1215         if (!wl) {
1216                 wiphy_err(wl->wiphy,
1217                           "wl: brcms_resume: pci_get_drvdata failed\n");
1218                 return -ENODEV;
1219         }
1220
1221         err = pci_set_power_state(pdev, PCI_D0);
1222         if (err)
1223                 return err;
1224
1225         pci_restore_state(pdev);
1226
1227         err = pci_enable_device(pdev);
1228         if (err)
1229                 return err;
1230
1231         pci_set_master(pdev);
1232
1233         pci_read_config_dword(pdev, 0x40, &val);
1234         if ((val & 0x0000ff00) != 0)
1235                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1236
1237         /*
1238         *  done. driver will be put in up state
1239         *  in brcms_ops_add_interface() call.
1240         */
1241         return err;
1242 }
1243
1244 static struct pci_driver brcms_pci_driver = {
1245         .name     = KBUILD_MODNAME,
1246         .probe    = brcms_pci_probe,
1247         .suspend  = brcms_suspend,
1248         .resume   = brcms_resume,
1249         .remove   = __devexit_p(brcms_remove),
1250         .id_table = brcms_pci_id_table,
1251 };
1252
1253 /**
1254  * This is the main entry point for the WL driver.
1255  *
1256  * This function determines if a device pointed to by pdev is a WL device,
1257  * and if so, performs a brcms_attach() on it.
1258  *
1259  */
1260 static int __init brcms_module_init(void)
1261 {
1262         int error = -ENODEV;
1263
1264 #ifdef BCMDBG
1265         if (msglevel != 0xdeadbeef)
1266                 brcm_msg_level = msglevel;
1267 #endif                          /* BCMDBG */
1268
1269         error = pci_register_driver(&brcms_pci_driver);
1270         if (!error)
1271                 return 0;
1272
1273
1274
1275         return error;
1276 }
1277
1278 /**
1279  * This function unloads the WL driver from the system.
1280  *
1281  * This function unconditionally unloads the WL driver module from the
1282  * system.
1283  *
1284  */
1285 static void __exit brcms_module_exit(void)
1286 {
1287         pci_unregister_driver(&brcms_pci_driver);
1288
1289 }
1290
1291 module_init(brcms_module_init);
1292 module_exit(brcms_module_exit);
1293
1294 /*
1295  * precondition: perimeter lock has been acquired
1296  */
1297 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1298                          bool state, int prio)
1299 {
1300         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1301 }
1302
1303 /*
1304  * precondition: perimeter lock has been acquired
1305  */
1306 void brcms_init(struct brcms_info *wl)
1307 {
1308         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1309         brcms_reset(wl);
1310         brcms_c_init(wl->wlc, wl->mute_tx);
1311 }
1312
1313 /*
1314  * precondition: perimeter lock has been acquired
1315  */
1316 uint brcms_reset(struct brcms_info *wl)
1317 {
1318         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1319         brcms_c_reset(wl->wlc);
1320
1321         /* dpc will not be rescheduled */
1322         wl->resched = 0;
1323
1324         return 0;
1325 }
1326
1327 void brcms_fatal_error(struct brcms_info *wl)
1328 {
1329         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1330                   wl->wlc->pub->unit);
1331         brcms_reset(wl);
1332         ieee80211_restart_hw(wl->pub->ieee_hw);
1333 }
1334
1335 /*
1336  * These are interrupt on/off entry points. Disable interrupts
1337  * during interrupt state transition.
1338  */
1339 void brcms_intrson(struct brcms_info *wl)
1340 {
1341         unsigned long flags;
1342
1343         spin_lock_irqsave(&wl->isr_lock, flags);
1344         brcms_c_intrson(wl->wlc);
1345         spin_unlock_irqrestore(&wl->isr_lock, flags);
1346 }
1347
1348 u32 brcms_intrsoff(struct brcms_info *wl)
1349 {
1350         unsigned long flags;
1351         u32 status;
1352
1353         spin_lock_irqsave(&wl->isr_lock, flags);
1354         status = brcms_c_intrsoff(wl->wlc);
1355         spin_unlock_irqrestore(&wl->isr_lock, flags);
1356         return status;
1357 }
1358
1359 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1360 {
1361         unsigned long flags;
1362
1363         spin_lock_irqsave(&wl->isr_lock, flags);
1364         brcms_c_intrsrestore(wl->wlc, macintmask);
1365         spin_unlock_irqrestore(&wl->isr_lock, flags);
1366 }
1367
1368 /*
1369  * precondition: perimeter lock has been acquired
1370  */
1371 int brcms_up(struct brcms_info *wl)
1372 {
1373         int error = 0;
1374
1375         if (wl->pub->up)
1376                 return 0;
1377
1378         error = brcms_c_up(wl->wlc);
1379
1380         return error;
1381 }
1382
1383 /*
1384  * precondition: perimeter lock has been acquired
1385  */
1386 void brcms_down(struct brcms_info *wl)
1387 {
1388         uint callbacks, ret_val = 0;
1389
1390         /* call common down function */
1391         ret_val = brcms_c_down(wl->wlc);
1392         callbacks = atomic_read(&wl->callbacks) - ret_val;
1393
1394         /* wait for down callbacks to complete */
1395         spin_unlock_bh(&wl->lock);
1396
1397         /* For HIGH_only driver, it's important to actually schedule other work,
1398          * not just spin wait since everything runs at schedule level
1399          */
1400         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1401
1402         spin_lock_bh(&wl->lock);
1403 }
1404
1405 /*
1406 * precondition: perimeter lock is not acquired
1407  */
1408 static void _brcms_timer(struct work_struct *work)
1409 {
1410         struct brcms_timer *t = container_of(work, struct brcms_timer,
1411                                              dly_wrk.work);
1412
1413         spin_lock_bh(&t->wl->lock);
1414
1415         if (t->set) {
1416                 if (t->periodic) {
1417                         atomic_inc(&t->wl->callbacks);
1418                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1419                                                      &t->dly_wrk,
1420                                                      msecs_to_jiffies(t->ms));
1421                 } else {
1422                         t->set = false;
1423                 }
1424
1425                 t->fn(t->arg);
1426         }
1427
1428         atomic_dec(&t->wl->callbacks);
1429
1430         spin_unlock_bh(&t->wl->lock);
1431 }
1432
1433 /*
1434  * Adds a timer to the list. Caller supplies a timer function.
1435  * Is called from wlc.
1436  *
1437  * precondition: perimeter lock has been acquired
1438  */
1439 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1440                                      void (*fn) (void *arg),
1441                                      void *arg, const char *name)
1442 {
1443         struct brcms_timer *t;
1444
1445         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1446         if (!t)
1447                 return NULL;
1448
1449         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1450         t->wl = wl;
1451         t->fn = fn;
1452         t->arg = arg;
1453         t->next = wl->timers;
1454         wl->timers = t;
1455
1456 #ifdef BCMDBG
1457         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1458         if (t->name)
1459                 strcpy(t->name, name);
1460 #endif
1461
1462         return t;
1463 }
1464
1465 /*
1466  * adds only the kernel timer since it's going to be more accurate
1467  * as well as it's easier to make it periodic
1468  *
1469  * precondition: perimeter lock has been acquired
1470  */
1471 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1472 {
1473         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1474
1475 #ifdef BCMDBG
1476         if (t->set)
1477                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1478                           __func__, t->name, periodic);
1479 #endif
1480         t->ms = ms;
1481         t->periodic = (bool) periodic;
1482         t->set = true;
1483
1484         atomic_inc(&t->wl->callbacks);
1485
1486         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1487 }
1488
1489 /*
1490  * return true if timer successfully deleted, false if still pending
1491  *
1492  * precondition: perimeter lock has been acquired
1493  */
1494 bool brcms_del_timer(struct brcms_timer *t)
1495 {
1496         if (t->set) {
1497                 t->set = false;
1498                 if (!cancel_delayed_work(&t->dly_wrk))
1499                         return false;
1500
1501                 atomic_dec(&t->wl->callbacks);
1502         }
1503
1504         return true;
1505 }
1506
1507 /*
1508  * precondition: perimeter lock has been acquired
1509  */
1510 void brcms_free_timer(struct brcms_timer *t)
1511 {
1512         struct brcms_info *wl = t->wl;
1513         struct brcms_timer *tmp;
1514
1515         /* delete the timer in case it is active */
1516         brcms_del_timer(t);
1517
1518         if (wl->timers == t) {
1519                 wl->timers = wl->timers->next;
1520 #ifdef BCMDBG
1521                 kfree(t->name);
1522 #endif
1523                 kfree(t);
1524                 return;
1525
1526         }
1527
1528         tmp = wl->timers;
1529         while (tmp) {
1530                 if (tmp->next == t) {
1531                         tmp->next = t->next;
1532 #ifdef BCMDBG
1533                         kfree(t->name);
1534 #endif
1535                         kfree(t);
1536                         return;
1537                 }
1538                 tmp = tmp->next;
1539         }
1540
1541 }
1542
1543 /*
1544  * precondition: perimeter lock has been acquired
1545  */
1546 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1547 {
1548         int i, entry;
1549         const u8 *pdata;
1550         struct firmware_hdr *hdr;
1551         for (i = 0; i < wl->fw.fw_cnt; i++) {
1552                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1553                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1554                      entry++, hdr++) {
1555                         u32 len = le32_to_cpu(hdr->len);
1556                         if (le32_to_cpu(hdr->idx) == idx) {
1557                                 pdata = wl->fw.fw_bin[i]->data +
1558                                         le32_to_cpu(hdr->offset);
1559                                 *pbuf = kmalloc(len, GFP_ATOMIC);
1560                                 if (*pbuf == NULL)
1561                                         goto fail;
1562
1563                                 memcpy(*pbuf, pdata, len);
1564                                 return 0;
1565                         }
1566                 }
1567         }
1568         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1569                   idx);
1570         *pbuf = NULL;
1571 fail:
1572         return -ENODATA;
1573 }
1574
1575 /*
1576  * Precondition: Since this function is called in brcms_pci_probe() context,
1577  * no locking is required.
1578  */
1579 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1580 {
1581         int i, entry;
1582         const u8 *pdata;
1583         struct firmware_hdr *hdr;
1584         for (i = 0; i < wl->fw.fw_cnt; i++) {
1585                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1586                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1587                      entry++, hdr++) {
1588                         if (le32_to_cpu(hdr->idx) == idx) {
1589                                 pdata = wl->fw.fw_bin[i]->data +
1590                                         le32_to_cpu(hdr->offset);
1591                                 if (le32_to_cpu(hdr->len) != 4) {
1592                                         wiphy_err(wl->wiphy,
1593                                                   "ERROR: fw hdr len\n");
1594                                         return -ENOMSG;
1595                                 }
1596                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1597                                 return 0;
1598                         }
1599                 }
1600         }
1601         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1602         return -ENOMSG;
1603 }
1604
1605 /*
1606  * precondition: can both be called locked and unlocked
1607  */
1608 void brcms_ucode_free_buf(void *p)
1609 {
1610         kfree(p);
1611 }
1612
1613 /*
1614  * checks validity of all firmware images loaded from user space
1615  *
1616  * Precondition: Since this function is called in brcms_pci_probe() context,
1617  * no locking is required.
1618  */
1619 int brcms_check_firmwares(struct brcms_info *wl)
1620 {
1621         int i;
1622         int entry;
1623         int rc = 0;
1624         const struct firmware *fw;
1625         const struct firmware *fw_hdr;
1626         struct firmware_hdr *ucode_hdr;
1627         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1628                 fw =  wl->fw.fw_bin[i];
1629                 fw_hdr = wl->fw.fw_hdr[i];
1630                 if (fw == NULL && fw_hdr == NULL) {
1631                         break;
1632                 } else if (fw == NULL || fw_hdr == NULL) {
1633                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1634                                   __func__);
1635                         rc = -EBADF;
1636                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1637                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1638                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1639                                 sizeof(struct firmware_hdr));
1640                         rc = -EBADF;
1641                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1642                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1643                                   "%zu\n", __func__, fw->size);
1644                         rc = -EBADF;
1645                 } else {
1646                         /* check if ucode section overruns firmware image */
1647                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1648                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1649                              !rc; entry++, ucode_hdr++) {
1650                                 if (le32_to_cpu(ucode_hdr->offset) +
1651                                     le32_to_cpu(ucode_hdr->len) >
1652                                     fw->size) {
1653                                         wiphy_err(wl->wiphy,
1654                                                   "%s: conflicting bin/hdr\n",
1655                                                   __func__);
1656                                         rc = -EBADF;
1657                                 }
1658                         }
1659                 }
1660         }
1661         if (rc == 0 && wl->fw.fw_cnt != i) {
1662                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1663                         wl->fw.fw_cnt);
1664                 rc = -EBADF;
1665         }
1666         return rc;
1667 }
1668
1669 /*
1670  * precondition: perimeter lock has been acquired
1671  */
1672 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1673 {
1674         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1675
1676         spin_unlock_bh(&wl->lock);
1677         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1678         if (blocked)
1679                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1680         spin_lock_bh(&wl->lock);
1681         return blocked;
1682 }
1683
1684 /*
1685  * precondition: perimeter lock has been acquired
1686  */
1687 void brcms_msleep(struct brcms_info *wl, uint ms)
1688 {
1689         spin_unlock_bh(&wl->lock);
1690         msleep(ms);
1691         spin_lock_bh(&wl->lock);
1692 }