Pileus Git - ~andy/linux/blob - drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #define __UNDEF_NO_VERSION__
  18
  19 #include <linux/etherdevice.h>
  20 #include <linux/pci.h>
  21 #include <linux/sched.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <net/mac80211.h>
  25 #include <defs.h>
  26 #include "nicpci.h"
  27 #include "phy/phy_int.h"
  28 #include "d11.h"
  29 #include "channel.h"
  30 #include "scb.h"
  31 #include "pub.h"
  32 #include "ucode_loader.h"
  33 #include "mac80211_if.h"
  34 #include "main.h"
  35
  36 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  37
  38 /* Flags we support */
  39 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  40         FIF_ALLMULTI | \
  41         FIF_FCSFAIL | \
  42         FIF_PLCPFAIL | \
  43         FIF_CONTROL | \
  44         FIF_OTHER_BSS | \
  45         FIF_BCN_PRBRESP_PROMISC)
  46
  47 #define CHAN2GHZ(channel, freqency, chflags)  { \
  48         .band = IEEE80211_BAND_2GHZ, \
  49         .center_freq = (freqency), \
  50         .hw_value = (channel), \
  51         .flags = chflags, \
  52         .max_antenna_gain = 0, \
  53         .max_power = 19, \
  54 }
  55
  56 #define CHAN5GHZ(channel, chflags)  { \
  57         .band = IEEE80211_BAND_5GHZ, \
  58         .center_freq = 5000 + 5*(channel), \
  59         .hw_value = (channel), \
  60         .flags = chflags, \
  61         .max_antenna_gain = 0, \
  62         .max_power = 21, \
  63 }
  64
  65 #define RATE(rate100m, _flags) { \
  66         .bitrate = (rate100m), \
  67         .flags = (_flags), \
  68         .hw_value = (rate100m / 5), \
  69 }
  70
  71 struct firmware_hdr {
  72         __le32 offset;
  73         __le32 len;
  74         __le32 idx;
  75 };
  76
  77 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  78         "brcm/bcm43xx",
  79         NULL
  80 };
  81
  82 static int n_adapters_found;
  83
  84 MODULE_AUTHOR("Broadcom Corporation");
  85 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  86 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  87 MODULE_LICENSE("Dual BSD/GPL");
  88
  89 /* recognized PCI IDs */
  90 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
  91         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
  92         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
  93         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
  94         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
  95         {0}
  96 };
  97
  98 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
  99
 100 #ifdef BCMDBG
 101 static int msglevel = 0xdeadbeef;
 102 module_param(msglevel, int, 0);
 103 #endif                          /* BCMDBG */
 104
 105 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 106         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 107         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 110         CHAN2GHZ(5, 2432, 0),
 111         CHAN2GHZ(6, 2437, 0),
 112         CHAN2GHZ(7, 2442, 0),
 113         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 114         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 117         CHAN2GHZ(12, 2467,
 118                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 119                  IEEE80211_CHAN_NO_HT40PLUS),
 120         CHAN2GHZ(13, 2472,
 121                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 122                  IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(14, 2484,
 124                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 125                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 126 };
 127
 128 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 129         /* UNII-1 */
 130         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 131         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 132         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 133         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 134         /* UNII-2 */
 135         CHAN5GHZ(52,
 136                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 137                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 138         CHAN5GHZ(56,
 139                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 140                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(60,
 142                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 143                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 144         CHAN5GHZ(64,
 145                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 146                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 147         /* MID */
 148         CHAN5GHZ(100,
 149                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 150                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 151         CHAN5GHZ(104,
 152                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 153                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 154         CHAN5GHZ(108,
 155                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 156                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 157         CHAN5GHZ(112,
 158                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 159                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 160         CHAN5GHZ(116,
 161                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 162                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 163         CHAN5GHZ(120,
 164                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 165                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 166         CHAN5GHZ(124,
 167                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 168                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 169         CHAN5GHZ(128,
 170                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 171                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 172         CHAN5GHZ(132,
 173                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 174                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 175         CHAN5GHZ(136,
 176                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 177                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 178         CHAN5GHZ(140,
 179                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 180                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 181                  IEEE80211_CHAN_NO_HT40MINUS),
 182         /* UNII-3 */
 183         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 185         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 188 };
 189
 190 /*
 191  * The rate table is used for both 2.4G and 5G rates. The
 192  * latter being a subset as it does not support CCK rates.
 193  */
 194 static struct ieee80211_rate legacy_ratetable[] = {
 195         RATE(10, 0),
 196         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 197         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 199         RATE(60, 0),
 200         RATE(90, 0),
 201         RATE(120, 0),
 202         RATE(180, 0),
 203         RATE(240, 0),
 204         RATE(360, 0),
 205         RATE(480, 0),
 206         RATE(540, 0),
 207 };
 208
 209 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 210         .band = IEEE80211_BAND_2GHZ,
 211         .channels = brcms_2ghz_chantable,
 212         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 213         .bitrates = legacy_ratetable,
 214         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 215         .ht_cap = {
 216                    /* from include/linux/ieee80211.h */
 217                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 218                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 219                    .ht_supported = true,
 220                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 221                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 222                    .mcs = {
 223                            /* placeholders for now */
 224                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 225                            .rx_highest = cpu_to_le16(500),
 226                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 227                    }
 228 };
 229
 230 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 231         .band = IEEE80211_BAND_5GHZ,
 232         .channels = brcms_5ghz_nphy_chantable,
 233         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 234         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 235         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 236                         BRCMS_LEGACY_5G_RATE_OFFSET,
 237         .ht_cap = {
 238                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 239                           IEEE80211_HT_CAP_SGI_40,
 240                    .ht_supported = true,
 241                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 242                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 243                    .mcs = {
 244                            /* placeholders for now */
 245                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 246                            .rx_highest = cpu_to_le16(500),
 247                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 248                    }
 249 };
 250
 251 /* flags the given rate in rateset as requested */
 252 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 253 {
 254         u32 i;
 255
 256         for (i = 0; i < rs->count; i++) {
 257                 if (rate != (rs->rates[i] & 0x7f))
 258                         continue;
 259
 260                 if (is_br)
 261                         rs->rates[i] |= BRCMS_RATE_FLAG;
 262                 else
 263                         rs->rates[i] &= BRCMS_RATE_MASK;
 264                 return;
 265         }
 266 }
 267
 268 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 269 {
 270         struct brcms_info *wl = hw->priv;
 271
 272         spin_lock_bh(&wl->lock);
 273         if (!wl->pub->up) {
 274                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 275                 kfree_skb(skb);
 276                 goto done;
 277         }
 278         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 279  done:
 280         spin_unlock_bh(&wl->lock);
 281 }
 282
 283 static int brcms_ops_start(struct ieee80211_hw *hw)
 284 {
 285         struct brcms_info *wl = hw->priv;
 286         bool blocked;
 287         int err;
 288
 289         ieee80211_wake_queues(hw);
 290         spin_lock_bh(&wl->lock);
 291         blocked = brcms_rfkill_set_hw_state(wl);
 292         spin_unlock_bh(&wl->lock);
 293         if (!blocked)
 294                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 295
 296         spin_lock_bh(&wl->lock);
 297         /* avoid acknowledging frames before a non-monitor device is added */
 298         wl->mute_tx = true;
 299
 300         if (!wl->pub->up)
 301                 err = brcms_up(wl);
 302         else
 303                 err = -ENODEV;
 304         spin_unlock_bh(&wl->lock);
 305
 306         if (err != 0)
 307                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 308                           err);
 309         return err;
 310 }
 311
 312 static void brcms_ops_stop(struct ieee80211_hw *hw)
 313 {
 314         struct brcms_info *wl = hw->priv;
 315         int status;
 316
 317         ieee80211_stop_queues(hw);
 318
 319         if (wl->wlc == NULL)
 320                 return;
 321
 322         spin_lock_bh(&wl->lock);
 323         status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
 324                                    wl->wlc->hw->deviceid);
 325         spin_unlock_bh(&wl->lock);
 326         if (!status) {
 327                 wiphy_err(wl->wiphy,
 328                           "wl: brcms_ops_stop: chipmatch failed\n");
 329                 return;
 330         }
 331
 332         /* put driver in down state */
 333         spin_lock_bh(&wl->lock);
 334         brcms_down(wl);
 335         spin_unlock_bh(&wl->lock);
 336 }
 337
 338 static int
 339 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 340 {
 341         struct brcms_info *wl = hw->priv;
 342
 343         /* Just STA for now */
 344         if (vif->type != NL80211_IFTYPE_STATION) {
 345                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 346                           " STA for now\n", __func__, vif->type);
 347                 return -EOPNOTSUPP;
 348         }
 349
 350         wl->mute_tx = false;
 351         brcms_c_mute(wl->wlc, false);
 352
 353         return 0;
 354 }
 355
 356 static void
 357 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 358 {
 359 }
 360
 361 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 362 {
 363         struct ieee80211_conf *conf = &hw->conf;
 364         struct brcms_info *wl = hw->priv;
 365         int err = 0;
 366         int new_int;
 367         struct wiphy *wiphy = hw->wiphy;
 368
 369         spin_lock_bh(&wl->lock);
 370         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 371                 brcms_c_set_beacon_listen_interval(wl->wlc,
 372                                                    conf->listen_interval);
 373         }
 374         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 375                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 376                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 377                           "true" : "false");
 378         if (changed & IEEE80211_CONF_CHANGE_PS)
 379                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 380                           __func__, conf->flags & IEEE80211_CONF_PS ?
 381                           "true" : "false");
 382
 383         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 384                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 385                 if (err < 0) {
 386                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 387                                   __func__);
 388                         goto config_out;
 389                 }
 390                 new_int = brcms_c_get_tx_power(wl->wlc);
 391                 if (new_int != conf->power_level)
 392                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 393                                   "\n", __func__, conf->power_level,
 394                                   new_int);
 395         }
 396         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 397                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 398                     conf->channel_type == NL80211_CHAN_NO_HT)
 399                         err = brcms_c_set_channel(wl->wlc,
 400                                                   conf->channel->hw_value);
 401                 else
 402                         err = -ENOTSUPP;
 403         }
 404         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 405                 err = brcms_c_set_rate_limit(wl->wlc,
 406                                              conf->short_frame_max_tx_count,
 407                                              conf->long_frame_max_tx_count);
 408
 409  config_out:
 410         spin_unlock_bh(&wl->lock);
 411         return err;
 412 }
 413
 414 static void
 415 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 416                         struct ieee80211_vif *vif,
 417                         struct ieee80211_bss_conf *info, u32 changed)
 418 {
 419         struct brcms_info *wl = hw->priv;
 420         struct wiphy *wiphy = hw->wiphy;
 421
 422         if (changed & BSS_CHANGED_ASSOC) {
 423                 /* association status changed (associated/disassociated)
 424                  * also implies a change in the AID.
 425                  */
 426                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 427                           __func__, info->assoc ? "" : "dis");
 428                 spin_lock_bh(&wl->lock);
 429                 brcms_c_associate_upd(wl->wlc, info->assoc);
 430                 spin_unlock_bh(&wl->lock);
 431         }
 432         if (changed & BSS_CHANGED_ERP_SLOT) {
 433                 s8 val;
 434
 435                 /* slot timing changed */
 436                 if (info->use_short_slot)
 437                         val = 1;
 438                 else
 439                         val = 0;
 440                 spin_lock_bh(&wl->lock);
 441                 brcms_c_set_shortslot_override(wl->wlc, val);
 442                 spin_unlock_bh(&wl->lock);
 443         }
 444
 445         if (changed & BSS_CHANGED_HT) {
 446                 /* 802.11n parameters changed */
 447                 u16 mode = info->ht_operation_mode;
 448
 449                 spin_lock_bh(&wl->lock);
 450                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 451                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 452                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 453                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 454                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 455                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 456                 spin_unlock_bh(&wl->lock);
 457         }
 458         if (changed & BSS_CHANGED_BASIC_RATES) {
 459                 struct ieee80211_supported_band *bi;
 460                 u32 br_mask, i;
 461                 u16 rate;
 462                 struct brcm_rateset rs;
 463                 int error;
 464
 465                 /* retrieve the current rates */
 466                 spin_lock_bh(&wl->lock);
 467                 brcms_c_get_current_rateset(wl->wlc, &rs);
 468                 spin_unlock_bh(&wl->lock);
 469
 470                 br_mask = info->basic_rates;
 471                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 472                 for (i = 0; i < bi->n_bitrates; i++) {
 473                         /* convert to internal rate value */
 474                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 475
 476                         /* set/clear basic rate flag */
 477                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 478                         br_mask >>= 1;
 479                 }
 480
 481                 /* update the rate set */
 482                 spin_lock_bh(&wl->lock);
 483                 error = brcms_c_set_rateset(wl->wlc, &rs);
 484                 spin_unlock_bh(&wl->lock);
 485                 if (error)
 486                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 487                                   error);
 488         }
 489         if (changed & BSS_CHANGED_BEACON_INT) {
 490                 /* Beacon interval changed */
 491                 spin_lock_bh(&wl->lock);
 492                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 493                 spin_unlock_bh(&wl->lock);
 494         }
 495         if (changed & BSS_CHANGED_BSSID) {
 496                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 497                 spin_lock_bh(&wl->lock);
 498                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 499                 spin_unlock_bh(&wl->lock);
 500         }
 501         if (changed & BSS_CHANGED_BEACON)
 502                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 503                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 504
 505         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 506                 /* Beaconing should be enabled/disabled (beaconing modes) */
 507                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 508                           info->enable_beacon ? "true" : "false");
 509         }
 510
 511         if (changed & BSS_CHANGED_CQM) {
 512                 /* Connection quality monitor config changed */
 513                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 514                           " (implement)\n", __func__, info->cqm_rssi_thold,
 515                           info->cqm_rssi_hyst);
 516         }
 517
 518         if (changed & BSS_CHANGED_IBSS) {
 519                 /* IBSS join status changed */
 520                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 521                           info->ibss_joined ? "true" : "false");
 522         }
 523
 524         if (changed & BSS_CHANGED_ARP_FILTER) {
 525                 /* Hardware ARP filter address list or state changed */
 526                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 527                           " (implement)\n", __func__, info->arp_filter_enabled ?
 528                           "true" : "false", info->arp_addr_cnt);
 529         }
 530
 531         if (changed & BSS_CHANGED_QOS) {
 532                 /*
 533                  * QoS for this association was enabled/disabled.
 534                  * Note that it is only ever disabled for station mode.
 535                  */
 536                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 537                           info->qos ? "true" : "false");
 538         }
 539         return;
 540 }
 541
 542 static void
 543 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 544                         unsigned int changed_flags,
 545                         unsigned int *total_flags, u64 multicast)
 546 {
 547         struct brcms_info *wl = hw->priv;
 548         struct wiphy *wiphy = hw->wiphy;
 549
 550         changed_flags &= MAC_FILTERS;
 551         *total_flags &= MAC_FILTERS;
 552         if (changed_flags & FIF_PROMISC_IN_BSS)
 553                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 554         if (changed_flags & FIF_ALLMULTI)
 555                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 556         if (changed_flags & FIF_FCSFAIL)
 557                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 558         if (changed_flags & FIF_PLCPFAIL)
 559                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 560         if (changed_flags & FIF_CONTROL)
 561                 wiphy_err(wiphy, "FIF_CONTROL\n");
 562         if (changed_flags & FIF_OTHER_BSS)
 563                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 564         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 565                 spin_lock_bh(&wl->lock);
 566                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 567                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 568                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 569                 } else {
 570                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 571                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 572                 }
 573                 spin_unlock_bh(&wl->lock);
 574         }
 575         return;
 576 }
 577
 578 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 579 {
 580         struct brcms_info *wl = hw->priv;
 581         spin_lock_bh(&wl->lock);
 582         brcms_c_scan_start(wl->wlc);
 583         spin_unlock_bh(&wl->lock);
 584         return;
 585 }
 586
 587 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 588 {
 589         struct brcms_info *wl = hw->priv;
 590         spin_lock_bh(&wl->lock);
 591         brcms_c_scan_stop(wl->wlc);
 592         spin_unlock_bh(&wl->lock);
 593         return;
 594 }
 595
 596 static int
 597 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 598                   const struct ieee80211_tx_queue_params *params)
 599 {
 600         struct brcms_info *wl = hw->priv;
 601
 602         spin_lock_bh(&wl->lock);
 603         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 604         spin_unlock_bh(&wl->lock);
 605
 606         return 0;
 607 }
 608
 609 static int
 610 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 611                struct ieee80211_sta *sta)
 612 {
 613         struct brcms_info *wl = hw->priv;
 614         struct scb *scb = &wl->wlc->pri_scb;
 615
 616         brcms_c_init_scb(scb);
 617
 618         wl->pub->global_ampdu = &(scb->scb_ampdu);
 619         wl->pub->global_ampdu->scb = scb;
 620         wl->pub->global_ampdu->max_pdu = 16;
 621
 622         /*
 623          * minstrel_ht initiates addBA on our behalf by calling
 624          * ieee80211_start_tx_ba_session()
 625          */
 626         return 0;
 627 }
 628
 629 static int
 630 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 631                     struct ieee80211_vif *vif,
 632                     enum ieee80211_ampdu_mlme_action action,
 633                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 634                     u8 buf_size)
 635 {
 636         struct brcms_info *wl = hw->priv;
 637         struct scb *scb = &wl->wlc->pri_scb;
 638         int status;
 639
 640         if (WARN_ON(scb->magic != SCB_MAGIC))
 641                 return -EIDRM;
 642         switch (action) {
 643         case IEEE80211_AMPDU_RX_START:
 644                 break;
 645         case IEEE80211_AMPDU_RX_STOP:
 646                 break;
 647         case IEEE80211_AMPDU_TX_START:
 648                 spin_lock_bh(&wl->lock);
 649                 status = brcms_c_aggregatable(wl->wlc, tid);
 650                 spin_unlock_bh(&wl->lock);
 651                 if (!status) {
 652                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 653                                   tid);
 654                         return -EINVAL;
 655                 }
 656                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 657                 break;
 658
 659         case IEEE80211_AMPDU_TX_STOP:
 660                 spin_lock_bh(&wl->lock);
 661                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 662                 spin_unlock_bh(&wl->lock);
 663                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 664                 break;
 665         case IEEE80211_AMPDU_TX_OPERATIONAL:
 666                 /*
 667                  * BA window size from ADDBA response ('buf_size') defines how
 668                  * many outstanding MPDUs are allowed for the BA stream by
 669                  * recipient and traffic class. 'ampdu_factor' gives maximum
 670                  * AMPDU size.
 671                  */
 672                 spin_lock_bh(&wl->lock);
 673                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 674                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 675                          sta->ht_cap.ampdu_factor)) - 1);
 676                 spin_unlock_bh(&wl->lock);
 677                 /* Power save wakeup */
 678                 break;
 679         default:
 680                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 681                           __func__);
 682         }
 683
 684         return 0;
 685 }
 686
 687 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 688 {
 689         struct brcms_info *wl = hw->priv;
 690         bool blocked;
 691
 692         spin_lock_bh(&wl->lock);
 693         blocked = brcms_c_check_radio_disabled(wl->wlc);
 694         spin_unlock_bh(&wl->lock);
 695
 696         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 697 }
 698
 699 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 700 {
 701         struct brcms_info *wl = hw->priv;
 702
 703         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 704
 705         /* wait for packet queue and dma fifos to run empty */
 706         spin_lock_bh(&wl->lock);
 707         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 708         spin_unlock_bh(&wl->lock);
 709 }
 710
 711 static const struct ieee80211_ops brcms_ops = {
 712         .tx = brcms_ops_tx,
 713         .start = brcms_ops_start,
 714         .stop = brcms_ops_stop,
 715         .add_interface = brcms_ops_add_interface,
 716         .remove_interface = brcms_ops_remove_interface,
 717         .config = brcms_ops_config,
 718         .bss_info_changed = brcms_ops_bss_info_changed,
 719         .configure_filter = brcms_ops_configure_filter,
 720         .sw_scan_start = brcms_ops_sw_scan_start,
 721         .sw_scan_complete = brcms_ops_sw_scan_complete,
 722         .conf_tx = brcms_ops_conf_tx,
 723         .sta_add = brcms_ops_sta_add,
 724         .ampdu_action = brcms_ops_ampdu_action,
 725         .rfkill_poll = brcms_ops_rfkill_poll,
 726         .flush = brcms_ops_flush,
 727 };
 728
 729 /*
 730  * is called in brcms_pci_probe() context, therefore no locking required.
 731  */
 732 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 733 {
 734         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 735 }
 736
 737 void brcms_dpc(unsigned long data)
 738 {
 739         struct brcms_info *wl;
 740
 741         wl = (struct brcms_info *) data;
 742
 743         spin_lock_bh(&wl->lock);
 744
 745         /* call the common second level interrupt handler */
 746         if (wl->pub->up) {
 747                 if (wl->resched) {
 748                         unsigned long flags;
 749
 750                         spin_lock_irqsave(&wl->isr_lock, flags);
 751                         brcms_c_intrsupd(wl->wlc);
 752                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 753                 }
 754
 755                 wl->resched = brcms_c_dpc(wl->wlc, true);
 756         }
 757
 758         /* brcms_c_dpc() may bring the driver down */
 759         if (!wl->pub->up)
 760                 goto done;
 761
 762         /* re-schedule dpc */
 763         if (wl->resched)
 764                 tasklet_schedule(&wl->tasklet);
 765         else
 766                 /* re-enable interrupts */
 767                 brcms_intrson(wl);
 768
 769  done:
 770         spin_unlock_bh(&wl->lock);
 771 }
 772
 773 /*
 774  * Precondition: Since this function is called in brcms_pci_probe() context,
 775  * no locking is required.
 776  */
 777 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 778 {
 779         int status;
 780         struct device *device = &pdev->dev;
 781         char fw_name[100];
 782         int i;
 783
 784         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 785         for (i = 0; i < MAX_FW_IMAGES; i++) {
 786                 if (brcms_firmwares[i] == NULL)
 787                         break;
 788                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 789                         UCODE_LOADER_API_VER);
 790                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 791                 if (status) {
 792                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 793                                   KBUILD_MODNAME, fw_name);
 794                         return status;
 795                 }
 796                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 797                         UCODE_LOADER_API_VER);
 798                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 799                 if (status) {
 800                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 801                                   KBUILD_MODNAME, fw_name);
 802                         return status;
 803                 }
 804                 wl->fw.hdr_num_entries[i] =
 805                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 806         }
 807         wl->fw.fw_cnt = i;
 808         return brcms_ucode_data_init(wl, &wl->ucode);
 809 }
 810
 811 /*
 812  * Precondition: Since this function is called in brcms_pci_probe() context,
 813  * no locking is required.
 814  */
 815 static void brcms_release_fw(struct brcms_info *wl)
 816 {
 817         int i;
 818         for (i = 0; i < MAX_FW_IMAGES; i++) {
 819                 release_firmware(wl->fw.fw_bin[i]);
 820                 release_firmware(wl->fw.fw_hdr[i]);
 821         }
 822 }
 823
 824 /**
 825  * This function frees the WL per-device resources.
 826  *
 827  * This function frees resources owned by the WL device pointed to
 828  * by the wl parameter.
 829  *
 830  * precondition: can both be called locked and unlocked
 831  *
 832  */
 833 static void brcms_free(struct brcms_info *wl)
 834 {
 835         struct brcms_timer *t, *next;
 836
 837         /* free ucode data */
 838         if (wl->fw.fw_cnt)
 839                 brcms_ucode_data_free(&wl->ucode);
 840         if (wl->irq)
 841                 free_irq(wl->irq, wl);
 842
 843         /* kill dpc */
 844         tasklet_kill(&wl->tasklet);
 845
 846         if (wl->pub)
 847                 brcms_c_module_unregister(wl->pub, "linux", wl);
 848
 849         /* free common resources */
 850         if (wl->wlc) {
 851                 brcms_c_detach(wl->wlc);
 852                 wl->wlc = NULL;
 853                 wl->pub = NULL;
 854         }
 855
 856         /* virtual interface deletion is deferred so we cannot spinwait */
 857
 858         /* wait for all pending callbacks to complete */
 859         while (atomic_read(&wl->callbacks) > 0)
 860                 schedule();
 861
 862         /* free timers */
 863         for (t = wl->timers; t; t = next) {
 864                 next = t->next;
 865 #ifdef BCMDBG
 866                 kfree(t->name);
 867 #endif
 868                 kfree(t);
 869         }
 870
 871         /*
 872          * unregister_netdev() calls get_stats() which may read chip
 873          * registers so we cannot unmap the chip registers until
 874          * after calling unregister_netdev() .
 875          */
 876         if (wl->regsva)
 877                 iounmap(wl->regsva);
 878
 879         wl->regsva = NULL;
 880 }
 881
 882 /*
 883 * called from both kernel as from this kernel module (error flow on attach)
 884 * precondition: perimeter lock is not acquired.
 885 */
 886 static void brcms_remove(struct pci_dev *pdev)
 887 {
 888         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 889         struct brcms_info *wl = hw->priv;
 890
 891         if (wl->wlc) {
 892                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 893                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 894                 ieee80211_unregister_hw(hw);
 895         }
 896         pci_disable_device(pdev);
 897
 898         brcms_free(wl);
 899
 900         pci_set_drvdata(pdev, NULL);
 901         ieee80211_free_hw(hw);
 902 }
 903
 904 static irqreturn_t brcms_isr(int irq, void *dev_id)
 905 {
 906         struct brcms_info *wl;
 907         bool ours, wantdpc;
 908
 909         wl = (struct brcms_info *) dev_id;
 910
 911         spin_lock(&wl->isr_lock);
 912
 913         /* call common first level interrupt handler */
 914         ours = brcms_c_isr(wl->wlc, &wantdpc);
 915         if (ours) {
 916                 /* if more to do... */
 917                 if (wantdpc) {
 918
 919                         /* ...and call the second level interrupt handler */
 920                         /* schedule dpc */
 921                         tasklet_schedule(&wl->tasklet);
 922                 }
 923         }
 924
 925         spin_unlock(&wl->isr_lock);
 926
 927         return IRQ_RETVAL(ours);
 928 }
 929
 930 /*
 931  * is called in brcms_pci_probe() context, therefore no locking required.
 932  */
 933 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 934 {
 935         struct brcms_info *wl = hw->priv;
 936         struct brcms_c_info *wlc = wl->wlc;
 937         struct ieee80211_supported_band *band;
 938         int has_5g = 0;
 939         u16 phy_type;
 940
 941         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 942         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 943
 944         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 945         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 946                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 947                 *band = brcms_band_2GHz_nphy_template;
 948                 if (phy_type == PHY_TYPE_LCN) {
 949                         /* Single stream */
 950                         band->ht_cap.mcs.rx_mask[1] = 0;
 951                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 952                 }
 953                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 954         } else {
 955                 return -EPERM;
 956         }
 957
 958         /* Assume all bands use the same phy.  True for 11n devices. */
 959         if (wl->pub->_nbands > 1) {
 960                 has_5g++;
 961                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 962                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 963                         *band = brcms_band_5GHz_nphy_template;
 964                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 965                 } else {
 966                         return -EPERM;
 967                 }
 968         }
 969         return 0;
 970 }
 971
 972 /*
 973  * is called in brcms_pci_probe() context, therefore no locking required.
 974  */
 975 static int ieee_hw_init(struct ieee80211_hw *hw)
 976 {
 977         hw->flags = IEEE80211_HW_SIGNAL_DBM
 978             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 979             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 980             | IEEE80211_HW_AMPDU_AGGREGATION;
 981
 982         hw->extra_tx_headroom = brcms_c_get_header_len();
 983         hw->queues = N_TX_QUEUES;
 984         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 985
 986         /* channel change time is dependent on chip and band  */
 987         hw->channel_change_time = 7 * 1000;
 988         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 989
 990         hw->rate_control_algorithm = "minstrel_ht";
 991
 992         hw->sta_data_size = 0;
 993         return ieee_hw_rate_init(hw);
 994 }
 995
 996 /**
 997  * attach to the WL device.
 998  *
 999  * Attach to the WL device identified by vendor and device parameters.
1000  * regs is a host accessible memory address pointing to WL device registers.
1001  *
1002  * brcms_attach is not defined as static because in the case where no bus
1003  * is defined, wl_attach will never be called, and thus, gcc will issue
1004  * a warning that this function is defined but not used if we declare
1005  * it as static.
1006  *
1007  *
1008  * is called in brcms_pci_probe() context, therefore no locking required.
1009  */
1010 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1011                                        resource_size_t regs,
1012                                        struct pci_dev *btparam, uint irq)
1013 {
1014         struct brcms_info *wl = NULL;
1015         int unit, err;
1016         struct ieee80211_hw *hw;
1017         u8 perm[ETH_ALEN];
1018
1019         unit = n_adapters_found;
1020         err = 0;
1021
1022         if (unit < 0)
1023                 return NULL;
1024
1025         /* allocate private info */
1026         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
1027         if (hw != NULL)
1028                 wl = hw->priv;
1029         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1030                 return NULL;
1031         wl->wiphy = hw->wiphy;
1032
1033         atomic_set(&wl->callbacks, 0);
1034
1035         /* setup the bottom half handler */
1036         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1037
1038         wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1039         if (wl->regsva == NULL) {
1040                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1041                 goto fail;
1042         }
1043         spin_lock_init(&wl->lock);
1044         spin_lock_init(&wl->isr_lock);
1045
1046         /* prepare ucode */
1047         if (brcms_request_fw(wl, btparam) < 0) {
1048                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1049                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1050                 brcms_release_fw(wl);
1051                 brcms_remove(btparam);
1052                 return NULL;
1053         }
1054
1055         /* common load-time initialization */
1056         wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1057                                  wl->regsva, btparam, &err);
1058         brcms_release_fw(wl);
1059         if (!wl->wlc) {
1060                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1061                           KBUILD_MODNAME, err);
1062                 goto fail;
1063         }
1064         wl->pub = brcms_c_pub(wl->wlc);
1065
1066         wl->pub->ieee_hw = hw;
1067
1068         /* register our interrupt handler */
1069         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1070                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1071                 goto fail;
1072         }
1073         wl->irq = irq;
1074
1075         /* register module */
1076         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1077
1078         if (ieee_hw_init(hw)) {
1079                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1080                           __func__);
1081                 goto fail;
1082         }
1083
1084         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1085         if (WARN_ON(!is_valid_ether_addr(perm)))
1086                 goto fail;
1087         SET_IEEE80211_PERM_ADDR(hw, perm);
1088
1089         err = ieee80211_register_hw(hw);
1090         if (err)
1091                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1092                           "%d\n", __func__, err);
1093
1094         if (wl->pub->srom_ccode[0])
1095                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1096         else
1097                 err = brcms_set_hint(wl, "US");
1098         if (err)
1099                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1100                           __func__, err);
1101
1102         n_adapters_found++;
1103         return wl;
1104
1105 fail:
1106         brcms_free(wl);
1107         return NULL;
1108 }
1109
1110
1111
1112 /**
1113  * determines if a device is a WL device, and if so, attaches it.
1114  *
1115  * This function determines if a device pointed to by pdev is a WL device,
1116  * and if so, performs a brcms_attach() on it.
1117  *
1118  * Perimeter lock is initialized in the course of this function.
1119  */
1120 static int __devinit
1121 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1122 {
1123         int rc;
1124         struct brcms_info *wl;
1125         struct ieee80211_hw *hw;
1126         u32 val;
1127
1128         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1129                pdev->bus->number, PCI_SLOT(pdev->devfn),
1130                PCI_FUNC(pdev->devfn), pdev->irq);
1131
1132         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1133             ((pdev->device != 0x0576) &&
1134              ((pdev->device & 0xff00) != 0x4300) &&
1135              ((pdev->device & 0xff00) != 0x4700) &&
1136              ((pdev->device < 43000) || (pdev->device > 43999))))
1137                 return -ENODEV;
1138
1139         rc = pci_enable_device(pdev);
1140         if (rc) {
1141                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1142                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1143                        PCI_FUNC(pdev->devfn));
1144                 return -ENODEV;
1145         }
1146         pci_set_master(pdev);
1147
1148         pci_read_config_dword(pdev, 0x40, &val);
1149         if ((val & 0x0000ff00) != 0)
1150                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1151
1152         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1153         if (!hw) {
1154                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1155                 return -ENOMEM;
1156         }
1157
1158         SET_IEEE80211_DEV(hw, &pdev->dev);
1159
1160         pci_set_drvdata(pdev, hw);
1161
1162         memset(hw->priv, 0, sizeof(*wl));
1163
1164         wl = brcms_attach(pdev->vendor, pdev->device,
1165                           pci_resource_start(pdev, 0), pdev,
1166                           pdev->irq);
1167
1168         if (!wl) {
1169                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1170                        __func__);
1171                 return -ENODEV;
1172         }
1173         return 0;
1174 }
1175
1176 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1177 {
1178         struct brcms_info *wl;
1179         struct ieee80211_hw *hw;
1180
1181         hw = pci_get_drvdata(pdev);
1182         wl = hw->priv;
1183         if (!wl) {
1184                 wiphy_err(wl->wiphy,
1185                           "brcms_suspend: pci_get_drvdata failed\n");
1186                 return -ENODEV;
1187         }
1188
1189         /* only need to flag hw is down for proper resume */
1190         spin_lock_bh(&wl->lock);
1191         wl->pub->hw_up = false;
1192         spin_unlock_bh(&wl->lock);
1193
1194         pci_save_state(pdev);
1195         pci_disable_device(pdev);
1196         return pci_set_power_state(pdev, PCI_D3hot);
1197 }
1198
1199 static int brcms_resume(struct pci_dev *pdev)
1200 {
1201         struct brcms_info *wl;
1202         struct ieee80211_hw *hw;
1203         int err = 0;
1204         u32 val;
1205
1206         hw = pci_get_drvdata(pdev);
1207         wl = hw->priv;
1208         if (!wl) {
1209                 wiphy_err(wl->wiphy,
1210                           "wl: brcms_resume: pci_get_drvdata failed\n");
1211                 return -ENODEV;
1212         }
1213
1214         err = pci_set_power_state(pdev, PCI_D0);
1215         if (err)
1216                 return err;
1217
1218         pci_restore_state(pdev);
1219
1220         err = pci_enable_device(pdev);
1221         if (err)
1222                 return err;
1223
1224         pci_set_master(pdev);
1225
1226         pci_read_config_dword(pdev, 0x40, &val);
1227         if ((val & 0x0000ff00) != 0)
1228                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1229
1230         /*
1231         *  done. driver will be put in up state
1232         *  in brcms_ops_add_interface() call.
1233         */
1234         return err;
1235 }
1236
1237 static struct pci_driver brcms_pci_driver = {
1238         .name     = KBUILD_MODNAME,
1239         .probe    = brcms_pci_probe,
1240         .suspend  = brcms_suspend,
1241         .resume   = brcms_resume,
1242         .remove   = __devexit_p(brcms_remove),
1243         .id_table = brcms_pci_id_table,
1244 };
1245
1246 /**
1247  * This is the main entry point for the WL driver.
1248  *
1249  * This function determines if a device pointed to by pdev is a WL device,
1250  * and if so, performs a brcms_attach() on it.
1251  *
1252  */
1253 static int __init brcms_module_init(void)
1254 {
1255         int error = -ENODEV;
1256
1257 #ifdef BCMDBG
1258         if (msglevel != 0xdeadbeef)
1259                 brcm_msg_level = msglevel;
1260 #endif                          /* BCMDBG */
1261
1262         error = pci_register_driver(&brcms_pci_driver);
1263         if (!error)
1264                 return 0;
1265
1266
1267
1268         return error;
1269 }
1270
1271 /**
1272  * This function unloads the WL driver from the system.
1273  *
1274  * This function unconditionally unloads the WL driver module from the
1275  * system.
1276  *
1277  */
1278 static void __exit brcms_module_exit(void)
1279 {
1280         pci_unregister_driver(&brcms_pci_driver);
1281
1282 }
1283
1284 module_init(brcms_module_init);
1285 module_exit(brcms_module_exit);
1286
1287 /*
1288  * precondition: perimeter lock has been acquired
1289  */
1290 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1291                          bool state, int prio)
1292 {
1293         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1294 }
1295
1296 /*
1297  * precondition: perimeter lock has been acquired
1298  */
1299 void brcms_init(struct brcms_info *wl)
1300 {
1301         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1302         brcms_reset(wl);
1303         brcms_c_init(wl->wlc, wl->mute_tx);
1304 }
1305
1306 /*
1307  * precondition: perimeter lock has been acquired
1308  */
1309 uint brcms_reset(struct brcms_info *wl)
1310 {
1311         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1312         brcms_c_reset(wl->wlc);
1313
1314         /* dpc will not be rescheduled */
1315         wl->resched = 0;
1316
1317         return 0;
1318 }
1319
1320 void brcms_fatal_error(struct brcms_info *wl)
1321 {
1322         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1323                   wl->wlc->pub->unit);
1324         brcms_reset(wl);
1325         ieee80211_restart_hw(wl->pub->ieee_hw);
1326 }
1327
1328 /*
1329  * These are interrupt on/off entry points. Disable interrupts
1330  * during interrupt state transition.
1331  */
1332 void brcms_intrson(struct brcms_info *wl)
1333 {
1334         unsigned long flags;
1335
1336         spin_lock_irqsave(&wl->isr_lock, flags);
1337         brcms_c_intrson(wl->wlc);
1338         spin_unlock_irqrestore(&wl->isr_lock, flags);
1339 }
1340
1341 u32 brcms_intrsoff(struct brcms_info *wl)
1342 {
1343         unsigned long flags;
1344         u32 status;
1345
1346         spin_lock_irqsave(&wl->isr_lock, flags);
1347         status = brcms_c_intrsoff(wl->wlc);
1348         spin_unlock_irqrestore(&wl->isr_lock, flags);
1349         return status;
1350 }
1351
1352 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1353 {
1354         unsigned long flags;
1355
1356         spin_lock_irqsave(&wl->isr_lock, flags);
1357         brcms_c_intrsrestore(wl->wlc, macintmask);
1358         spin_unlock_irqrestore(&wl->isr_lock, flags);
1359 }
1360
1361 /*
1362  * precondition: perimeter lock has been acquired
1363  */
1364 int brcms_up(struct brcms_info *wl)
1365 {
1366         int error = 0;
1367
1368         if (wl->pub->up)
1369                 return 0;
1370
1371         error = brcms_c_up(wl->wlc);
1372
1373         return error;
1374 }
1375
1376 /*
1377  * precondition: perimeter lock has been acquired
1378  */
1379 void brcms_down(struct brcms_info *wl)
1380 {
1381         uint callbacks, ret_val = 0;
1382
1383         /* call common down function */
1384         ret_val = brcms_c_down(wl->wlc);
1385         callbacks = atomic_read(&wl->callbacks) - ret_val;
1386
1387         /* wait for down callbacks to complete */
1388         spin_unlock_bh(&wl->lock);
1389
1390         /* For HIGH_only driver, it's important to actually schedule other work,
1391          * not just spin wait since everything runs at schedule level
1392          */
1393         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1394
1395         spin_lock_bh(&wl->lock);
1396 }
1397
1398 /*
1399 * precondition: perimeter lock is not acquired
1400  */
1401 static void _brcms_timer(struct work_struct *work)
1402 {
1403         struct brcms_timer *t = container_of(work, struct brcms_timer,
1404                                              dly_wrk.work);
1405
1406         spin_lock_bh(&t->wl->lock);
1407
1408         if (t->set) {
1409                 if (t->periodic) {
1410                         atomic_inc(&t->wl->callbacks);
1411                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1412                                                      &t->dly_wrk,
1413                                                      msecs_to_jiffies(t->ms));
1414                 } else {
1415                         t->set = false;
1416                 }
1417
1418                 t->fn(t->arg);
1419         }
1420
1421         atomic_dec(&t->wl->callbacks);
1422
1423         spin_unlock_bh(&t->wl->lock);
1424 }
1425
1426 /*
1427  * Adds a timer to the list. Caller supplies a timer function.
1428  * Is called from wlc.
1429  *
1430  * precondition: perimeter lock has been acquired
1431  */
1432 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1433                                      void (*fn) (void *arg),
1434                                      void *arg, const char *name)
1435 {
1436         struct brcms_timer *t;
1437
1438         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1439         if (!t)
1440                 return NULL;
1441
1442         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1443         t->wl = wl;
1444         t->fn = fn;
1445         t->arg = arg;
1446         t->next = wl->timers;
1447         wl->timers = t;
1448
1449 #ifdef BCMDBG
1450         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1451         if (t->name)
1452                 strcpy(t->name, name);
1453 #endif
1454
1455         return t;
1456 }
1457
1458 /*
1459  * adds only the kernel timer since it's going to be more accurate
1460  * as well as it's easier to make it periodic
1461  *
1462  * precondition: perimeter lock has been acquired
1463  */
1464 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1465 {
1466         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1467
1468 #ifdef BCMDBG
1469         if (t->set)
1470                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1471                           __func__, t->name, periodic);
1472 #endif
1473         t->ms = ms;
1474         t->periodic = (bool) periodic;
1475         t->set = true;
1476
1477         atomic_inc(&t->wl->callbacks);
1478
1479         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1480 }
1481
1482 /*
1483  * return true if timer successfully deleted, false if still pending
1484  *
1485  * precondition: perimeter lock has been acquired
1486  */
1487 bool brcms_del_timer(struct brcms_timer *t)
1488 {
1489         if (t->set) {
1490                 t->set = false;
1491                 if (!cancel_delayed_work(&t->dly_wrk))
1492                         return false;
1493
1494                 atomic_dec(&t->wl->callbacks);
1495         }
1496
1497         return true;
1498 }
1499
1500 /*
1501  * precondition: perimeter lock has been acquired
1502  */
1503 void brcms_free_timer(struct brcms_timer *t)
1504 {
1505         struct brcms_info *wl = t->wl;
1506         struct brcms_timer *tmp;
1507
1508         /* delete the timer in case it is active */
1509         brcms_del_timer(t);
1510
1511         if (wl->timers == t) {
1512                 wl->timers = wl->timers->next;
1513 #ifdef BCMDBG
1514                 kfree(t->name);
1515 #endif
1516                 kfree(t);
1517                 return;
1518
1519         }
1520
1521         tmp = wl->timers;
1522         while (tmp) {
1523                 if (tmp->next == t) {
1524                         tmp->next = t->next;
1525 #ifdef BCMDBG
1526                         kfree(t->name);
1527 #endif
1528                         kfree(t);
1529                         return;
1530                 }
1531                 tmp = tmp->next;
1532         }
1533
1534 }
1535
1536 /*
1537  * precondition: perimeter lock has been acquired
1538  */
1539 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1540 {
1541         int i, entry;
1542         const u8 *pdata;
1543         struct firmware_hdr *hdr;
1544         for (i = 0; i < wl->fw.fw_cnt; i++) {
1545                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1546                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1547                      entry++, hdr++) {
1548                         u32 len = le32_to_cpu(hdr->len);
1549                         if (le32_to_cpu(hdr->idx) == idx) {
1550                                 pdata = wl->fw.fw_bin[i]->data +
1551                                         le32_to_cpu(hdr->offset);
1552                                 *pbuf = kmalloc(len, GFP_ATOMIC);
1553                                 if (*pbuf == NULL)
1554                                         goto fail;
1555
1556                                 memcpy(*pbuf, pdata, len);
1557                                 return 0;
1558                         }
1559                 }
1560         }
1561         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1562                   idx);
1563         *pbuf = NULL;
1564 fail:
1565         return -ENODATA;
1566 }
1567
1568 /*
1569  * Precondition: Since this function is called in brcms_pci_probe() context,
1570  * no locking is required.
1571  */
1572 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1573 {
1574         int i, entry;
1575         const u8 *pdata;
1576         struct firmware_hdr *hdr;
1577         for (i = 0; i < wl->fw.fw_cnt; i++) {
1578                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1579                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1580                      entry++, hdr++) {
1581                         if (le32_to_cpu(hdr->idx) == idx) {
1582                                 pdata = wl->fw.fw_bin[i]->data +
1583                                         le32_to_cpu(hdr->offset);
1584                                 if (le32_to_cpu(hdr->len) != 4) {
1585                                         wiphy_err(wl->wiphy,
1586                                                   "ERROR: fw hdr len\n");
1587                                         return -ENOMSG;
1588                                 }
1589                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1590                                 return 0;
1591                         }
1592                 }
1593         }
1594         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1595         return -ENOMSG;
1596 }
1597
1598 /*
1599  * precondition: can both be called locked and unlocked
1600  */
1601 void brcms_ucode_free_buf(void *p)
1602 {
1603         kfree(p);
1604 }
1605
1606 /*
1607  * checks validity of all firmware images loaded from user space
1608  *
1609  * Precondition: Since this function is called in brcms_pci_probe() context,
1610  * no locking is required.
1611  */
1612 int brcms_check_firmwares(struct brcms_info *wl)
1613 {
1614         int i;
1615         int entry;
1616         int rc = 0;
1617         const struct firmware *fw;
1618         const struct firmware *fw_hdr;
1619         struct firmware_hdr *ucode_hdr;
1620         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1621                 fw =  wl->fw.fw_bin[i];
1622                 fw_hdr = wl->fw.fw_hdr[i];
1623                 if (fw == NULL && fw_hdr == NULL) {
1624                         break;
1625                 } else if (fw == NULL || fw_hdr == NULL) {
1626                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1627                                   __func__);
1628                         rc = -EBADF;
1629                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1630                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1631                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1632                                 sizeof(struct firmware_hdr));
1633                         rc = -EBADF;
1634                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1635                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1636                                   "%zu\n", __func__, fw->size);
1637                         rc = -EBADF;
1638                 } else {
1639                         /* check if ucode section overruns firmware image */
1640                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1641                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1642                              !rc; entry++, ucode_hdr++) {
1643                                 if (le32_to_cpu(ucode_hdr->offset) +
1644                                     le32_to_cpu(ucode_hdr->len) >
1645                                     fw->size) {
1646                                         wiphy_err(wl->wiphy,
1647                                                   "%s: conflicting bin/hdr\n",
1648                                                   __func__);
1649                                         rc = -EBADF;
1650                                 }
1651                         }
1652                 }
1653         }
1654         if (rc == 0 && wl->fw.fw_cnt != i) {
1655                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1656                         wl->fw.fw_cnt);
1657                 rc = -EBADF;
1658         }
1659         return rc;
1660 }
1661
1662 /*
1663  * precondition: perimeter lock has been acquired
1664  */
1665 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1666 {
1667         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1668
1669         spin_unlock_bh(&wl->lock);
1670         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1671         if (blocked)
1672                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1673         spin_lock_bh(&wl->lock);
1674         return blocked;
1675 }
1676
1677 /*
1678  * precondition: perimeter lock has been acquired
1679  */
1680 void brcms_msleep(struct brcms_info *wl, uint ms)
1681 {
1682         spin_unlock_bh(&wl->lock);
1683         msleep(ms);
1684         spin_lock_bh(&wl->lock);
1685 }