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