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
 288         ieee80211_wake_queues(hw);
 289         spin_lock_bh(&wl->lock);
 290         blocked = brcms_rfkill_set_hw_state(wl);
 291         spin_unlock_bh(&wl->lock);
 292         if (!blocked)
 293                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 294
 295         return 0;
 296 }
 297
 298 static void brcms_ops_stop(struct ieee80211_hw *hw)
 299 {
 300         ieee80211_stop_queues(hw);
 301 }
 302
 303 static int
 304 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 305 {
 306         struct brcms_info *wl;
 307         int err;
 308
 309         /* Just STA for now */
 310         if (vif->type != NL80211_IFTYPE_AP &&
 311             vif->type != NL80211_IFTYPE_MESH_POINT &&
 312             vif->type != NL80211_IFTYPE_STATION &&
 313             vif->type != NL80211_IFTYPE_WDS &&
 314             vif->type != NL80211_IFTYPE_ADHOC) {
 315                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 316                           " STA for now\n", __func__, vif->type);
 317                 return -EOPNOTSUPP;
 318         }
 319
 320         wl = hw->priv;
 321         spin_lock_bh(&wl->lock);
 322         if (!wl->pub->up)
 323                 err = brcms_up(wl);
 324         else
 325                 err = -ENODEV;
 326         spin_unlock_bh(&wl->lock);
 327
 328         if (err != 0)
 329                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 330                           err);
 331
 332         return err;
 333 }
 334
 335 static void
 336 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 337 {
 338         struct brcms_info *wl;
 339
 340         wl = hw->priv;
 341
 342         /* put driver in down state */
 343         spin_lock_bh(&wl->lock);
 344         brcms_down(wl);
 345         spin_unlock_bh(&wl->lock);
 346 }
 347
 348 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 349 {
 350         struct ieee80211_conf *conf = &hw->conf;
 351         struct brcms_info *wl = hw->priv;
 352         int err = 0;
 353         int new_int;
 354         struct wiphy *wiphy = hw->wiphy;
 355
 356         spin_lock_bh(&wl->lock);
 357         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 358                 brcms_c_set_beacon_listen_interval(wl->wlc,
 359                                                    conf->listen_interval);
 360         }
 361         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 362                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 363                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 364                           "true" : "false");
 365         if (changed & IEEE80211_CONF_CHANGE_PS)
 366                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 367                           __func__, conf->flags & IEEE80211_CONF_PS ?
 368                           "true" : "false");
 369
 370         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 371                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 372                 if (err < 0) {
 373                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 374                                   __func__);
 375                         goto config_out;
 376                 }
 377                 new_int = brcms_c_get_tx_power(wl->wlc);
 378                 if (new_int != conf->power_level)
 379                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 380                                   "\n", __func__, conf->power_level,
 381                                   new_int);
 382         }
 383         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 384                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 385                     conf->channel_type == NL80211_CHAN_NO_HT)
 386                         err = brcms_c_set_channel(wl->wlc,
 387                                                   conf->channel->hw_value);
 388                 else
 389                         err = -ENOTSUPP;
 390         }
 391         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 392                 err = brcms_c_set_rate_limit(wl->wlc,
 393                                              conf->short_frame_max_tx_count,
 394                                              conf->long_frame_max_tx_count);
 395
 396  config_out:
 397         spin_unlock_bh(&wl->lock);
 398         return err;
 399 }
 400
 401 static void
 402 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 403                         struct ieee80211_vif *vif,
 404                         struct ieee80211_bss_conf *info, u32 changed)
 405 {
 406         struct brcms_info *wl = hw->priv;
 407         struct wiphy *wiphy = hw->wiphy;
 408
 409         if (changed & BSS_CHANGED_ASSOC) {
 410                 /* association status changed (associated/disassociated)
 411                  * also implies a change in the AID.
 412                  */
 413                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 414                           __func__, info->assoc ? "" : "dis");
 415                 spin_lock_bh(&wl->lock);
 416                 brcms_c_associate_upd(wl->wlc, info->assoc);
 417                 spin_unlock_bh(&wl->lock);
 418         }
 419         if (changed & BSS_CHANGED_ERP_SLOT) {
 420                 s8 val;
 421
 422                 /* slot timing changed */
 423                 if (info->use_short_slot)
 424                         val = 1;
 425                 else
 426                         val = 0;
 427                 spin_lock_bh(&wl->lock);
 428                 brcms_c_set_shortslot_override(wl->wlc, val);
 429                 spin_unlock_bh(&wl->lock);
 430         }
 431
 432         if (changed & BSS_CHANGED_HT) {
 433                 /* 802.11n parameters changed */
 434                 u16 mode = info->ht_operation_mode;
 435
 436                 spin_lock_bh(&wl->lock);
 437                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 438                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 439                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 440                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 441                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 442                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 443                 spin_unlock_bh(&wl->lock);
 444         }
 445         if (changed & BSS_CHANGED_BASIC_RATES) {
 446                 struct ieee80211_supported_band *bi;
 447                 u32 br_mask, i;
 448                 u16 rate;
 449                 struct brcm_rateset rs;
 450                 int error;
 451
 452                 /* retrieve the current rates */
 453                 spin_lock_bh(&wl->lock);
 454                 brcms_c_get_current_rateset(wl->wlc, &rs);
 455                 spin_unlock_bh(&wl->lock);
 456
 457                 br_mask = info->basic_rates;
 458                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 459                 for (i = 0; i < bi->n_bitrates; i++) {
 460                         /* convert to internal rate value */
 461                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 462
 463                         /* set/clear basic rate flag */
 464                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 465                         br_mask >>= 1;
 466                 }
 467
 468                 /* update the rate set */
 469                 spin_lock_bh(&wl->lock);
 470                 error = brcms_c_set_rateset(wl->wlc, &rs);
 471                 spin_unlock_bh(&wl->lock);
 472                 if (error)
 473                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 474                                   error);
 475         }
 476         if (changed & BSS_CHANGED_BEACON_INT) {
 477                 /* Beacon interval changed */
 478                 spin_lock_bh(&wl->lock);
 479                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 480                 spin_unlock_bh(&wl->lock);
 481         }
 482         if (changed & BSS_CHANGED_BSSID) {
 483                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 484                 spin_lock_bh(&wl->lock);
 485                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 486                 spin_unlock_bh(&wl->lock);
 487         }
 488         if (changed & BSS_CHANGED_BEACON)
 489                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 490                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 491
 492         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 493                 /* Beaconing should be enabled/disabled (beaconing modes) */
 494                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 495                           info->enable_beacon ? "true" : "false");
 496         }
 497
 498         if (changed & BSS_CHANGED_CQM) {
 499                 /* Connection quality monitor config changed */
 500                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 501                           " (implement)\n", __func__, info->cqm_rssi_thold,
 502                           info->cqm_rssi_hyst);
 503         }
 504
 505         if (changed & BSS_CHANGED_IBSS) {
 506                 /* IBSS join status changed */
 507                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 508                           info->ibss_joined ? "true" : "false");
 509         }
 510
 511         if (changed & BSS_CHANGED_ARP_FILTER) {
 512                 /* Hardware ARP filter address list or state changed */
 513                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 514                           " (implement)\n", __func__, info->arp_filter_enabled ?
 515                           "true" : "false", info->arp_addr_cnt);
 516         }
 517
 518         if (changed & BSS_CHANGED_QOS) {
 519                 /*
 520                  * QoS for this association was enabled/disabled.
 521                  * Note that it is only ever disabled for station mode.
 522                  */
 523                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 524                           info->qos ? "true" : "false");
 525         }
 526         return;
 527 }
 528
 529 static void
 530 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 531                         unsigned int changed_flags,
 532                         unsigned int *total_flags, u64 multicast)
 533 {
 534         struct brcms_info *wl = hw->priv;
 535         struct wiphy *wiphy = hw->wiphy;
 536
 537         changed_flags &= MAC_FILTERS;
 538         *total_flags &= MAC_FILTERS;
 539         if (changed_flags & FIF_PROMISC_IN_BSS)
 540                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 541         if (changed_flags & FIF_ALLMULTI)
 542                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 543         if (changed_flags & FIF_FCSFAIL)
 544                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 545         if (changed_flags & FIF_PLCPFAIL)
 546                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 547         if (changed_flags & FIF_CONTROL)
 548                 wiphy_err(wiphy, "FIF_CONTROL\n");
 549         if (changed_flags & FIF_OTHER_BSS)
 550                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 551         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 552                 spin_lock_bh(&wl->lock);
 553                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 554                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 555                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 556                 } else {
 557                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 558                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 559                 }
 560                 spin_unlock_bh(&wl->lock);
 561         }
 562         return;
 563 }
 564
 565 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 566 {
 567         struct brcms_info *wl = hw->priv;
 568         spin_lock_bh(&wl->lock);
 569         brcms_c_scan_start(wl->wlc);
 570         spin_unlock_bh(&wl->lock);
 571         return;
 572 }
 573
 574 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 575 {
 576         struct brcms_info *wl = hw->priv;
 577         spin_lock_bh(&wl->lock);
 578         brcms_c_scan_stop(wl->wlc);
 579         spin_unlock_bh(&wl->lock);
 580         return;
 581 }
 582
 583 static int
 584 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 585                   const struct ieee80211_tx_queue_params *params)
 586 {
 587         struct brcms_info *wl = hw->priv;
 588
 589         spin_lock_bh(&wl->lock);
 590         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 591         spin_unlock_bh(&wl->lock);
 592
 593         return 0;
 594 }
 595
 596 static int
 597 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 598                struct ieee80211_sta *sta)
 599 {
 600         struct brcms_info *wl = hw->priv;
 601         struct scb *scb = &wl->wlc->pri_scb;
 602
 603         brcms_c_init_scb(scb);
 604
 605         wl->pub->global_ampdu = &(scb->scb_ampdu);
 606         wl->pub->global_ampdu->scb = scb;
 607         wl->pub->global_ampdu->max_pdu = 16;
 608
 609         sta->ht_cap.ht_supported = true;
 610         sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 611         sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY;
 612         sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD |
 613             IEEE80211_HT_CAP_SGI_20 |
 614             IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT;
 615
 616         /*
 617          * minstrel_ht initiates addBA on our behalf by calling
 618          * ieee80211_start_tx_ba_session()
 619          */
 620         return 0;
 621 }
 622
 623 static int
 624 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 625                     struct ieee80211_vif *vif,
 626                     enum ieee80211_ampdu_mlme_action action,
 627                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 628                     u8 buf_size)
 629 {
 630         struct brcms_info *wl = hw->priv;
 631         struct scb *scb = &wl->wlc->pri_scb;
 632         int status;
 633
 634         if (WARN_ON(scb->magic != SCB_MAGIC))
 635                 return -EIDRM;
 636         switch (action) {
 637         case IEEE80211_AMPDU_RX_START:
 638                 break;
 639         case IEEE80211_AMPDU_RX_STOP:
 640                 break;
 641         case IEEE80211_AMPDU_TX_START:
 642                 spin_lock_bh(&wl->lock);
 643                 status = brcms_c_aggregatable(wl->wlc, tid);
 644                 spin_unlock_bh(&wl->lock);
 645                 if (!status) {
 646                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 647                                   tid);
 648                         return -EINVAL;
 649                 }
 650                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 651                 break;
 652
 653         case IEEE80211_AMPDU_TX_STOP:
 654                 spin_lock_bh(&wl->lock);
 655                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 656                 spin_unlock_bh(&wl->lock);
 657                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 658                 break;
 659         case IEEE80211_AMPDU_TX_OPERATIONAL:
 660                 /*
 661                  * BA window size from ADDBA response ('buf_size') defines how
 662                  * many outstanding MPDUs are allowed for the BA stream by
 663                  * recipient and traffic class. 'ampdu_factor' gives maximum
 664                  * AMPDU size.
 665                  */
 666                 spin_lock_bh(&wl->lock);
 667                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 668                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 669                          sta->ht_cap.ampdu_factor)) - 1);
 670                 spin_unlock_bh(&wl->lock);
 671                 /* Power save wakeup */
 672                 break;
 673         default:
 674                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 675                           __func__);
 676         }
 677
 678         return 0;
 679 }
 680
 681 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 682 {
 683         struct brcms_info *wl = hw->priv;
 684         bool blocked;
 685
 686         spin_lock_bh(&wl->lock);
 687         blocked = brcms_c_check_radio_disabled(wl->wlc);
 688         spin_unlock_bh(&wl->lock);
 689
 690         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 691 }
 692
 693 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 694 {
 695         struct brcms_info *wl = hw->priv;
 696
 697         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 698
 699         /* wait for packet queue and dma fifos to run empty */
 700         spin_lock_bh(&wl->lock);
 701         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 702         spin_unlock_bh(&wl->lock);
 703 }
 704
 705 static const struct ieee80211_ops brcms_ops = {
 706         .tx = brcms_ops_tx,
 707         .start = brcms_ops_start,
 708         .stop = brcms_ops_stop,
 709         .add_interface = brcms_ops_add_interface,
 710         .remove_interface = brcms_ops_remove_interface,
 711         .config = brcms_ops_config,
 712         .bss_info_changed = brcms_ops_bss_info_changed,
 713         .configure_filter = brcms_ops_configure_filter,
 714         .sw_scan_start = brcms_ops_sw_scan_start,
 715         .sw_scan_complete = brcms_ops_sw_scan_complete,
 716         .conf_tx = brcms_ops_conf_tx,
 717         .sta_add = brcms_ops_sta_add,
 718         .ampdu_action = brcms_ops_ampdu_action,
 719         .rfkill_poll = brcms_ops_rfkill_poll,
 720         .flush = brcms_ops_flush,
 721 };
 722
 723 /*
 724  * is called in brcms_pci_probe() context, therefore no locking required.
 725  */
 726 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 727 {
 728         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 729 }
 730
 731 void brcms_dpc(unsigned long data)
 732 {
 733         struct brcms_info *wl;
 734
 735         wl = (struct brcms_info *) data;
 736
 737         spin_lock_bh(&wl->lock);
 738
 739         /* call the common second level interrupt handler */
 740         if (wl->pub->up) {
 741                 if (wl->resched) {
 742                         unsigned long flags;
 743
 744                         spin_lock_irqsave(&wl->isr_lock, flags);
 745                         brcms_c_intrsupd(wl->wlc);
 746                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 747                 }
 748
 749                 wl->resched = brcms_c_dpc(wl->wlc, true);
 750         }
 751
 752         /* brcms_c_dpc() may bring the driver down */
 753         if (!wl->pub->up)
 754                 goto done;
 755
 756         /* re-schedule dpc */
 757         if (wl->resched)
 758                 tasklet_schedule(&wl->tasklet);
 759         else
 760                 /* re-enable interrupts */
 761                 brcms_intrson(wl);
 762
 763  done:
 764         spin_unlock_bh(&wl->lock);
 765 }
 766
 767 /*
 768  * Precondition: Since this function is called in brcms_pci_probe() context,
 769  * no locking is required.
 770  */
 771 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 772 {
 773         int status;
 774         struct device *device = &pdev->dev;
 775         char fw_name[100];
 776         int i;
 777
 778         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 779         for (i = 0; i < MAX_FW_IMAGES; i++) {
 780                 if (brcms_firmwares[i] == NULL)
 781                         break;
 782                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 783                         UCODE_LOADER_API_VER);
 784                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 785                 if (status) {
 786                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 787                                   KBUILD_MODNAME, fw_name);
 788                         return status;
 789                 }
 790                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 791                         UCODE_LOADER_API_VER);
 792                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 793                 if (status) {
 794                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 795                                   KBUILD_MODNAME, fw_name);
 796                         return status;
 797                 }
 798                 wl->fw.hdr_num_entries[i] =
 799                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 800         }
 801         wl->fw.fw_cnt = i;
 802         return brcms_ucode_data_init(wl, &wl->ucode);
 803 }
 804
 805 /*
 806  * Precondition: Since this function is called in brcms_pci_probe() context,
 807  * no locking is required.
 808  */
 809 static void brcms_release_fw(struct brcms_info *wl)
 810 {
 811         int i;
 812         for (i = 0; i < MAX_FW_IMAGES; i++) {
 813                 release_firmware(wl->fw.fw_bin[i]);
 814                 release_firmware(wl->fw.fw_hdr[i]);
 815         }
 816 }
 817
 818 /**
 819  * This function frees the WL per-device resources.
 820  *
 821  * This function frees resources owned by the WL device pointed to
 822  * by the wl parameter.
 823  *
 824  * precondition: can both be called locked and unlocked
 825  *
 826  */
 827 static void brcms_free(struct brcms_info *wl)
 828 {
 829         struct brcms_timer *t, *next;
 830
 831         /* free ucode data */
 832         if (wl->fw.fw_cnt)
 833                 brcms_ucode_data_free(&wl->ucode);
 834         if (wl->irq)
 835                 free_irq(wl->irq, wl);
 836
 837         /* kill dpc */
 838         tasklet_kill(&wl->tasklet);
 839
 840         if (wl->pub)
 841                 brcms_c_module_unregister(wl->pub, "linux", wl);
 842
 843         /* free common resources */
 844         if (wl->wlc) {
 845                 brcms_c_detach(wl->wlc);
 846                 wl->wlc = NULL;
 847                 wl->pub = NULL;
 848         }
 849
 850         /* virtual interface deletion is deferred so we cannot spinwait */
 851
 852         /* wait for all pending callbacks to complete */
 853         while (atomic_read(&wl->callbacks) > 0)
 854                 schedule();
 855
 856         /* free timers */
 857         for (t = wl->timers; t; t = next) {
 858                 next = t->next;
 859 #ifdef BCMDBG
 860                 kfree(t->name);
 861 #endif
 862                 kfree(t);
 863         }
 864
 865         /*
 866          * unregister_netdev() calls get_stats() which may read chip
 867          * registers so we cannot unmap the chip registers until
 868          * after calling unregister_netdev() .
 869          */
 870         if (wl->regsva)
 871                 iounmap(wl->regsva);
 872
 873         wl->regsva = NULL;
 874 }
 875
 876 /*
 877 * called from both kernel as from this kernel module.
 878 * precondition: perimeter lock is not acquired.
 879 */
 880 static void brcms_remove(struct pci_dev *pdev)
 881 {
 882         struct brcms_info *wl;
 883         struct ieee80211_hw *hw;
 884         int status;
 885
 886         hw = pci_get_drvdata(pdev);
 887         wl = hw->priv;
 888         if (!wl) {
 889                 pr_err("wl: brcms_remove: pci_get_drvdata failed\n");
 890                 return;
 891         }
 892
 893         spin_lock_bh(&wl->lock);
 894         status = brcms_c_chipmatch(pdev->vendor, pdev->device);
 895         spin_unlock_bh(&wl->lock);
 896         if (!status) {
 897                 wiphy_err(wl->wiphy, "wl: brcms_remove: chipmatch "
 898                                      "failed\n");
 899                 return;
 900         }
 901         if (wl->wlc) {
 902                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 903                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 904                 ieee80211_unregister_hw(hw);
 905                 spin_lock_bh(&wl->lock);
 906                 brcms_down(wl);
 907                 spin_unlock_bh(&wl->lock);
 908         }
 909         pci_disable_device(pdev);
 910
 911         brcms_free(wl);
 912
 913         pci_set_drvdata(pdev, NULL);
 914         ieee80211_free_hw(hw);
 915 }
 916
 917 static irqreturn_t brcms_isr(int irq, void *dev_id)
 918 {
 919         struct brcms_info *wl;
 920         bool ours, wantdpc;
 921
 922         wl = (struct brcms_info *) dev_id;
 923
 924         spin_lock(&wl->isr_lock);
 925
 926         /* call common first level interrupt handler */
 927         ours = brcms_c_isr(wl->wlc, &wantdpc);
 928         if (ours) {
 929                 /* if more to do... */
 930                 if (wantdpc) {
 931
 932                         /* ...and call the second level interrupt handler */
 933                         /* schedule dpc */
 934                         tasklet_schedule(&wl->tasklet);
 935                 }
 936         }
 937
 938         spin_unlock(&wl->isr_lock);
 939
 940         return IRQ_RETVAL(ours);
 941 }
 942
 943 /*
 944  * is called in brcms_pci_probe() context, therefore no locking required.
 945  */
 946 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 947 {
 948         struct brcms_info *wl = hw->priv;
 949         struct brcms_c_info *wlc = wl->wlc;
 950         struct ieee80211_supported_band *band;
 951         int has_5g = 0;
 952         u16 phy_type;
 953
 954         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 955         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 956
 957         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 958         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 959                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 960                 *band = brcms_band_2GHz_nphy_template;
 961                 if (phy_type == PHY_TYPE_LCN) {
 962                         /* Single stream */
 963                         band->ht_cap.mcs.rx_mask[1] = 0;
 964                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 965                 }
 966                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 967         } else {
 968                 return -EPERM;
 969         }
 970
 971         /* Assume all bands use the same phy.  True for 11n devices. */
 972         if (wl->pub->_nbands > 1) {
 973                 has_5g++;
 974                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 975                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 976                         *band = brcms_band_5GHz_nphy_template;
 977                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 978                 } else {
 979                         return -EPERM;
 980                 }
 981         }
 982         return 0;
 983 }
 984
 985 /*
 986  * is called in brcms_pci_probe() context, therefore no locking required.
 987  */
 988 static int ieee_hw_init(struct ieee80211_hw *hw)
 989 {
 990         hw->flags = IEEE80211_HW_SIGNAL_DBM
 991             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 992             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 993             | IEEE80211_HW_AMPDU_AGGREGATION;
 994
 995         hw->extra_tx_headroom = brcms_c_get_header_len();
 996         hw->queues = N_TX_QUEUES;
 997         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 998
 999         /* channel change time is dependent on chip and band  */
1000         hw->channel_change_time = 7 * 1000;
1001         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1002
1003         hw->rate_control_algorithm = "minstrel_ht";
1004
1005         hw->sta_data_size = 0;
1006         return ieee_hw_rate_init(hw);
1007 }
1008
1009 /**
1010  * attach to the WL device.
1011  *
1012  * Attach to the WL device identified by vendor and device parameters.
1013  * regs is a host accessible memory address pointing to WL device registers.
1014  *
1015  * brcms_attach is not defined as static because in the case where no bus
1016  * is defined, wl_attach will never be called, and thus, gcc will issue
1017  * a warning that this function is defined but not used if we declare
1018  * it as static.
1019  *
1020  *
1021  * is called in brcms_pci_probe() context, therefore no locking required.
1022  */
1023 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1024                                        resource_size_t regs,
1025                                        struct pci_dev *btparam, uint irq)
1026 {
1027         struct brcms_info *wl = NULL;
1028         int unit, err;
1029         struct ieee80211_hw *hw;
1030         u8 perm[ETH_ALEN];
1031
1032         unit = n_adapters_found;
1033         err = 0;
1034
1035         if (unit < 0)
1036                 return NULL;
1037
1038         /* allocate private info */
1039         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
1040         if (hw != NULL)
1041                 wl = hw->priv;
1042         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1043                 return NULL;
1044         wl->wiphy = hw->wiphy;
1045
1046         atomic_set(&wl->callbacks, 0);
1047
1048         /* setup the bottom half handler */
1049         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1050
1051         wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1052         if (wl->regsva == NULL) {
1053                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1054                 goto fail;
1055         }
1056         spin_lock_init(&wl->lock);
1057         spin_lock_init(&wl->isr_lock);
1058
1059         /* prepare ucode */
1060         if (brcms_request_fw(wl, btparam) < 0) {
1061                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1062                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1063                 brcms_release_fw(wl);
1064                 brcms_remove(btparam);
1065                 return NULL;
1066         }
1067
1068         /* common load-time initialization */
1069         wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1070                                  wl->regsva, btparam, &err);
1071         brcms_release_fw(wl);
1072         if (!wl->wlc) {
1073                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1074                           KBUILD_MODNAME, err);
1075                 goto fail;
1076         }
1077         wl->pub = brcms_c_pub(wl->wlc);
1078
1079         wl->pub->ieee_hw = hw;
1080
1081         brcms_c_set_radio_mon(wl->wlc);
1082
1083         /* register our interrupt handler */
1084         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1085                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1086                 goto fail;
1087         }
1088         wl->irq = irq;
1089
1090         /* register module */
1091         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1092
1093         if (ieee_hw_init(hw)) {
1094                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1095                           __func__);
1096                 goto fail;
1097         }
1098
1099         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1100         if (WARN_ON(!is_valid_ether_addr(perm)))
1101                 goto fail;
1102         SET_IEEE80211_PERM_ADDR(hw, perm);
1103
1104         err = ieee80211_register_hw(hw);
1105         if (err)
1106                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1107                           "%d\n", __func__, err);
1108
1109         if (wl->pub->srom_ccode[0])
1110                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1111         else
1112                 err = brcms_set_hint(wl, "US");
1113         if (err)
1114                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1115                           __func__, err);
1116
1117         n_adapters_found++;
1118         return wl;
1119
1120 fail:
1121         brcms_free(wl);
1122         return NULL;
1123 }
1124
1125
1126
1127 /**
1128  * determines if a device is a WL device, and if so, attaches it.
1129  *
1130  * This function determines if a device pointed to by pdev is a WL device,
1131  * and if so, performs a brcms_attach() on it.
1132  *
1133  * Perimeter lock is initialized in the course of this function.
1134  */
1135 static int __devinit
1136 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1137 {
1138         int rc;
1139         struct brcms_info *wl;
1140         struct ieee80211_hw *hw;
1141         u32 val;
1142
1143         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1144                pdev->bus->number, PCI_SLOT(pdev->devfn),
1145                PCI_FUNC(pdev->devfn), pdev->irq);
1146
1147         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1148             ((pdev->device != 0x0576) &&
1149              ((pdev->device & 0xff00) != 0x4300) &&
1150              ((pdev->device & 0xff00) != 0x4700) &&
1151              ((pdev->device < 43000) || (pdev->device > 43999))))
1152                 return -ENODEV;
1153
1154         rc = pci_enable_device(pdev);
1155         if (rc) {
1156                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1157                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1158                        PCI_FUNC(pdev->devfn));
1159                 return -ENODEV;
1160         }
1161         pci_set_master(pdev);
1162
1163         pci_read_config_dword(pdev, 0x40, &val);
1164         if ((val & 0x0000ff00) != 0)
1165                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1166
1167         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1168         if (!hw) {
1169                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1170                 return -ENOMEM;
1171         }
1172
1173         SET_IEEE80211_DEV(hw, &pdev->dev);
1174
1175         pci_set_drvdata(pdev, hw);
1176
1177         memset(hw->priv, 0, sizeof(*wl));
1178
1179         wl = brcms_attach(pdev->vendor, pdev->device,
1180                           pci_resource_start(pdev, 0), pdev,
1181                           pdev->irq);
1182
1183         if (!wl) {
1184                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1185                        __func__);
1186                 return -ENODEV;
1187         }
1188         return 0;
1189 }
1190
1191 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1192 {
1193         struct brcms_info *wl;
1194         struct ieee80211_hw *hw;
1195
1196         hw = pci_get_drvdata(pdev);
1197         wl = hw->priv;
1198         if (!wl) {
1199                 wiphy_err(wl->wiphy,
1200                           "brcms_suspend: pci_get_drvdata failed\n");
1201                 return -ENODEV;
1202         }
1203
1204         /* only need to flag hw is down for proper resume */
1205         spin_lock_bh(&wl->lock);
1206         wl->pub->hw_up = false;
1207         spin_unlock_bh(&wl->lock);
1208
1209         pci_save_state(pdev);
1210         pci_disable_device(pdev);
1211         return pci_set_power_state(pdev, PCI_D3hot);
1212 }
1213
1214 static int brcms_resume(struct pci_dev *pdev)
1215 {
1216         struct brcms_info *wl;
1217         struct ieee80211_hw *hw;
1218         int err = 0;
1219         u32 val;
1220
1221         hw = pci_get_drvdata(pdev);
1222         wl = hw->priv;
1223         if (!wl) {
1224                 wiphy_err(wl->wiphy,
1225                           "wl: brcms_resume: pci_get_drvdata failed\n");
1226                 return -ENODEV;
1227         }
1228
1229         err = pci_set_power_state(pdev, PCI_D0);
1230         if (err)
1231                 return err;
1232
1233         pci_restore_state(pdev);
1234
1235         err = pci_enable_device(pdev);
1236         if (err)
1237                 return err;
1238
1239         pci_set_master(pdev);
1240
1241         pci_read_config_dword(pdev, 0x40, &val);
1242         if ((val & 0x0000ff00) != 0)
1243                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1244
1245         /*
1246         *  done. driver will be put in up state
1247         *  in brcms_ops_add_interface() call.
1248         */
1249         return err;
1250 }
1251
1252 static struct pci_driver brcms_pci_driver = {
1253         .name     = KBUILD_MODNAME,
1254         .probe    = brcms_pci_probe,
1255         .suspend  = brcms_suspend,
1256         .resume   = brcms_resume,
1257         .remove   = __devexit_p(brcms_remove),
1258         .id_table = brcms_pci_id_table,
1259 };
1260
1261 /**
1262  * This is the main entry point for the WL driver.
1263  *
1264  * This function determines if a device pointed to by pdev is a WL device,
1265  * and if so, performs a brcms_attach() on it.
1266  *
1267  */
1268 static int __init brcms_module_init(void)
1269 {
1270         int error = -ENODEV;
1271
1272 #ifdef BCMDBG
1273         if (msglevel != 0xdeadbeef)
1274                 brcm_msg_level = msglevel;
1275 #endif                          /* BCMDBG */
1276
1277         error = pci_register_driver(&brcms_pci_driver);
1278         if (!error)
1279                 return 0;
1280
1281
1282
1283         return error;
1284 }
1285
1286 /**
1287  * This function unloads the WL driver from the system.
1288  *
1289  * This function unconditionally unloads the WL driver module from the
1290  * system.
1291  *
1292  */
1293 static void __exit brcms_module_exit(void)
1294 {
1295         pci_unregister_driver(&brcms_pci_driver);
1296
1297 }
1298
1299 module_init(brcms_module_init);
1300 module_exit(brcms_module_exit);
1301
1302 /*
1303  * precondition: perimeter lock has been acquired
1304  */
1305 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1306                          bool state, int prio)
1307 {
1308         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1309 }
1310
1311 /*
1312  * precondition: perimeter lock has been acquired
1313  */
1314 void brcms_init(struct brcms_info *wl)
1315 {
1316         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1317         brcms_reset(wl);
1318
1319         brcms_c_init(wl->wlc);
1320 }
1321
1322 /*
1323  * precondition: perimeter lock has been acquired
1324  */
1325 uint brcms_reset(struct brcms_info *wl)
1326 {
1327         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1328         brcms_c_reset(wl->wlc);
1329
1330         /* dpc will not be rescheduled */
1331         wl->resched = 0;
1332
1333         return 0;
1334 }
1335
1336 void brcms_fatal_error(struct brcms_info *wl)
1337 {
1338         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1339                   wl->wlc->pub->unit);
1340         brcms_reset(wl);
1341         ieee80211_restart_hw(wl->pub->ieee_hw);
1342 }
1343
1344 /*
1345  * These are interrupt on/off entry points. Disable interrupts
1346  * during interrupt state transition.
1347  */
1348 void brcms_intrson(struct brcms_info *wl)
1349 {
1350         unsigned long flags;
1351
1352         spin_lock_irqsave(&wl->isr_lock, flags);
1353         brcms_c_intrson(wl->wlc);
1354         spin_unlock_irqrestore(&wl->isr_lock, flags);
1355 }
1356
1357 u32 brcms_intrsoff(struct brcms_info *wl)
1358 {
1359         unsigned long flags;
1360         u32 status;
1361
1362         spin_lock_irqsave(&wl->isr_lock, flags);
1363         status = brcms_c_intrsoff(wl->wlc);
1364         spin_unlock_irqrestore(&wl->isr_lock, flags);
1365         return status;
1366 }
1367
1368 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1369 {
1370         unsigned long flags;
1371
1372         spin_lock_irqsave(&wl->isr_lock, flags);
1373         brcms_c_intrsrestore(wl->wlc, macintmask);
1374         spin_unlock_irqrestore(&wl->isr_lock, flags);
1375 }
1376
1377 /*
1378  * precondition: perimeter lock has been acquired
1379  */
1380 int brcms_up(struct brcms_info *wl)
1381 {
1382         int error = 0;
1383
1384         if (wl->pub->up)
1385                 return 0;
1386
1387         error = brcms_c_up(wl->wlc);
1388
1389         return error;
1390 }
1391
1392 /*
1393  * precondition: perimeter lock has been acquired
1394  */
1395 void brcms_down(struct brcms_info *wl)
1396 {
1397         uint callbacks, ret_val = 0;
1398
1399         /* call common down function */
1400         ret_val = brcms_c_down(wl->wlc);
1401         callbacks = atomic_read(&wl->callbacks) - ret_val;
1402
1403         /* wait for down callbacks to complete */
1404         spin_unlock_bh(&wl->lock);
1405
1406         /* For HIGH_only driver, it's important to actually schedule other work,
1407          * not just spin wait since everything runs at schedule level
1408          */
1409         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1410
1411         spin_lock_bh(&wl->lock);
1412 }
1413
1414 /*
1415 * precondition: perimeter lock is not acquired
1416  */
1417 static void _brcms_timer(struct work_struct *work)
1418 {
1419         struct brcms_timer *t = container_of(work, struct brcms_timer,
1420                                              dly_wrk.work);
1421
1422         spin_lock_bh(&t->wl->lock);
1423
1424         if (t->set) {
1425                 if (t->periodic) {
1426                         atomic_inc(&t->wl->callbacks);
1427                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1428                                                      &t->dly_wrk,
1429                                                      msecs_to_jiffies(t->ms));
1430                 } else {
1431                         t->set = false;
1432                 }
1433
1434                 t->fn(t->arg);
1435         }
1436
1437         atomic_dec(&t->wl->callbacks);
1438
1439         spin_unlock_bh(&t->wl->lock);
1440 }
1441
1442 /*
1443  * Adds a timer to the list. Caller supplies a timer function.
1444  * Is called from wlc.
1445  *
1446  * precondition: perimeter lock has been acquired
1447  */
1448 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1449                                      void (*fn) (void *arg),
1450                                      void *arg, const char *name)
1451 {
1452         struct brcms_timer *t;
1453
1454         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1455         if (!t)
1456                 return NULL;
1457
1458         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1459         t->wl = wl;
1460         t->fn = fn;
1461         t->arg = arg;
1462         t->next = wl->timers;
1463         wl->timers = t;
1464
1465 #ifdef BCMDBG
1466         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1467         if (t->name)
1468                 strcpy(t->name, name);
1469 #endif
1470
1471         return t;
1472 }
1473
1474 /*
1475  * adds only the kernel timer since it's going to be more accurate
1476  * as well as it's easier to make it periodic
1477  *
1478  * precondition: perimeter lock has been acquired
1479  */
1480 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1481 {
1482         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1483
1484 #ifdef BCMDBG
1485         if (t->set)
1486                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1487                           __func__, t->name, periodic);
1488 #endif
1489         t->ms = ms;
1490         t->periodic = (bool) periodic;
1491         t->set = true;
1492
1493         atomic_inc(&t->wl->callbacks);
1494
1495         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1496 }
1497
1498 /*
1499  * return true if timer successfully deleted, false if still pending
1500  *
1501  * precondition: perimeter lock has been acquired
1502  */
1503 bool brcms_del_timer(struct brcms_timer *t)
1504 {
1505         if (t->set) {
1506                 t->set = false;
1507                 if (!cancel_delayed_work(&t->dly_wrk))
1508                         return false;
1509
1510                 atomic_dec(&t->wl->callbacks);
1511         }
1512
1513         return true;
1514 }
1515
1516 /*
1517  * precondition: perimeter lock has been acquired
1518  */
1519 void brcms_free_timer(struct brcms_timer *t)
1520 {
1521         struct brcms_info *wl = t->wl;
1522         struct brcms_timer *tmp;
1523
1524         /* delete the timer in case it is active */
1525         brcms_del_timer(t);
1526
1527         if (wl->timers == t) {
1528                 wl->timers = wl->timers->next;
1529 #ifdef BCMDBG
1530                 kfree(t->name);
1531 #endif
1532                 kfree(t);
1533                 return;
1534
1535         }
1536
1537         tmp = wl->timers;
1538         while (tmp) {
1539                 if (tmp->next == t) {
1540                         tmp->next = t->next;
1541 #ifdef BCMDBG
1542                         kfree(t->name);
1543 #endif
1544                         kfree(t);
1545                         return;
1546                 }
1547                 tmp = tmp->next;
1548         }
1549
1550 }
1551
1552 /*
1553  * precondition: perimeter lock has been acquired
1554  */
1555 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1556 {
1557         int i, entry;
1558         const u8 *pdata;
1559         struct firmware_hdr *hdr;
1560         for (i = 0; i < wl->fw.fw_cnt; i++) {
1561                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1562                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1563                      entry++, hdr++) {
1564                         u32 len = le32_to_cpu(hdr->len);
1565                         if (le32_to_cpu(hdr->idx) == idx) {
1566                                 pdata = wl->fw.fw_bin[i]->data +
1567                                         le32_to_cpu(hdr->offset);
1568                                 *pbuf = kmalloc(len, GFP_ATOMIC);
1569                                 if (*pbuf == NULL)
1570                                         goto fail;
1571
1572                                 memcpy(*pbuf, pdata, len);
1573                                 return 0;
1574                         }
1575                 }
1576         }
1577         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1578                   idx);
1579         *pbuf = NULL;
1580 fail:
1581         return -ENODATA;
1582 }
1583
1584 /*
1585  * Precondition: Since this function is called in brcms_pci_probe() context,
1586  * no locking is required.
1587  */
1588 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1589 {
1590         int i, entry;
1591         const u8 *pdata;
1592         struct firmware_hdr *hdr;
1593         for (i = 0; i < wl->fw.fw_cnt; i++) {
1594                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1595                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1596                      entry++, hdr++) {
1597                         if (le32_to_cpu(hdr->idx) == idx) {
1598                                 pdata = wl->fw.fw_bin[i]->data +
1599                                         le32_to_cpu(hdr->offset);
1600                                 if (le32_to_cpu(hdr->len) != 4) {
1601                                         wiphy_err(wl->wiphy,
1602                                                   "ERROR: fw hdr len\n");
1603                                         return -ENOMSG;
1604                                 }
1605                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1606                                 return 0;
1607                         }
1608                 }
1609         }
1610         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1611         return -ENOMSG;
1612 }
1613
1614 /*
1615  * precondition: can both be called locked and unlocked
1616  */
1617 void brcms_ucode_free_buf(void *p)
1618 {
1619         kfree(p);
1620 }
1621
1622 /*
1623  * checks validity of all firmware images loaded from user space
1624  *
1625  * Precondition: Since this function is called in brcms_pci_probe() context,
1626  * no locking is required.
1627  */
1628 int brcms_check_firmwares(struct brcms_info *wl)
1629 {
1630         int i;
1631         int entry;
1632         int rc = 0;
1633         const struct firmware *fw;
1634         const struct firmware *fw_hdr;
1635         struct firmware_hdr *ucode_hdr;
1636         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1637                 fw =  wl->fw.fw_bin[i];
1638                 fw_hdr = wl->fw.fw_hdr[i];
1639                 if (fw == NULL && fw_hdr == NULL) {
1640                         break;
1641                 } else if (fw == NULL || fw_hdr == NULL) {
1642                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1643                                   __func__);
1644                         rc = -EBADF;
1645                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1646                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1647                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1648                                 sizeof(struct firmware_hdr));
1649                         rc = -EBADF;
1650                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1651                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1652                                   "%zu\n", __func__, fw->size);
1653                         rc = -EBADF;
1654                 } else {
1655                         /* check if ucode section overruns firmware image */
1656                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1657                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1658                              !rc; entry++, ucode_hdr++) {
1659                                 if (le32_to_cpu(ucode_hdr->offset) +
1660                                     le32_to_cpu(ucode_hdr->len) >
1661                                     fw->size) {
1662                                         wiphy_err(wl->wiphy,
1663                                                   "%s: conflicting bin/hdr\n",
1664                                                   __func__);
1665                                         rc = -EBADF;
1666                                 }
1667                         }
1668                 }
1669         }
1670         if (rc == 0 && wl->fw.fw_cnt != i) {
1671                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1672                         wl->fw.fw_cnt);
1673                 rc = -EBADF;
1674         }
1675         return rc;
1676 }
1677
1678 /*
1679  * precondition: perimeter lock has been acquired
1680  */
1681 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1682 {
1683         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1684
1685         spin_unlock_bh(&wl->lock);
1686         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1687         if (blocked)
1688                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1689         spin_lock_bh(&wl->lock);
1690         return blocked;
1691 }
1692
1693 /*
1694  * precondition: perimeter lock has been acquired
1695  */
1696 void brcms_msleep(struct brcms_info *wl, uint ms)
1697 {
1698         spin_unlock_bh(&wl->lock);
1699         msleep(ms);
1700         spin_lock_bh(&wl->lock);
1701 }