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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20 #include <linux/etherdevice.h>
  21 #include <linux/sched.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/module.h>
  25 #include <linux/bcma/bcma.h>
  26 #include <net/mac80211.h>
  27 #include <defs.h>
  28 #include "phy/phy_int.h"
  29 #include "d11.h"
  30 #include "channel.h"
  31 #include "scb.h"
  32 #include "pub.h"
  33 #include "ucode_loader.h"
  34 #include "mac80211_if.h"
  35 #include "main.h"
  36
  37 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  38
  39 /* Flags we support */
  40 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  41         FIF_ALLMULTI | \
  42         FIF_FCSFAIL | \
  43         FIF_CONTROL | \
  44         FIF_OTHER_BSS | \
  45         FIF_BCN_PRBRESP_PROMISC | \
  46         FIF_PSPOLL)
  47
  48 #define CHAN2GHZ(channel, freqency, chflags)  { \
  49         .band = IEEE80211_BAND_2GHZ, \
  50         .center_freq = (freqency), \
  51         .hw_value = (channel), \
  52         .flags = chflags, \
  53         .max_antenna_gain = 0, \
  54         .max_power = 19, \
  55 }
  56
  57 #define CHAN5GHZ(channel, chflags)  { \
  58         .band = IEEE80211_BAND_5GHZ, \
  59         .center_freq = 5000 + 5*(channel), \
  60         .hw_value = (channel), \
  61         .flags = chflags, \
  62         .max_antenna_gain = 0, \
  63         .max_power = 21, \
  64 }
  65
  66 #define RATE(rate100m, _flags) { \
  67         .bitrate = (rate100m), \
  68         .flags = (_flags), \
  69         .hw_value = (rate100m / 5), \
  70 }
  71
  72 struct firmware_hdr {
  73         __le32 offset;
  74         __le32 len;
  75         __le32 idx;
  76 };
  77
  78 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  79         "brcm/bcm43xx",
  80         NULL
  81 };
  82
  83 static int n_adapters_found;
  84
  85 MODULE_AUTHOR("Broadcom Corporation");
  86 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  87 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  88 MODULE_LICENSE("Dual BSD/GPL");
  89
  90
  91 /* recognized BCMA Core IDs */
  92 static struct bcma_device_id brcms_coreid_table[] = {
  93         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  94         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
  95         BCMA_CORETABLE_END
  96 };
  97 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
  98
  99 #ifdef DEBUG
 100 static int msglevel = 0xdeadbeef;
 101 module_param(msglevel, int, 0);
 102 #endif                          /* DEBUG */
 103
 104 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 105         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 106         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 107         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(5, 2432, 0),
 110         CHAN2GHZ(6, 2437, 0),
 111         CHAN2GHZ(7, 2442, 0),
 112         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 113         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 114         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(12, 2467,
 117                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 118                  IEEE80211_CHAN_NO_HT40PLUS),
 119         CHAN2GHZ(13, 2472,
 120                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 121                  IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(14, 2484,
 123                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 124                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 125 };
 126
 127 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 128         /* UNII-1 */
 129         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 130         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 132         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 133         /* UNII-2 */
 134         CHAN5GHZ(52,
 135                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 136                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 137         CHAN5GHZ(56,
 138                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 139                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 140         CHAN5GHZ(60,
 141                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 142                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 143         CHAN5GHZ(64,
 144                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 145                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 146         /* MID */
 147         CHAN5GHZ(100,
 148                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 149                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 150         CHAN5GHZ(104,
 151                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 152                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 153         CHAN5GHZ(108,
 154                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 155                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 156         CHAN5GHZ(112,
 157                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 158                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 159         CHAN5GHZ(116,
 160                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 161                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 162         CHAN5GHZ(120,
 163                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 164                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 165         CHAN5GHZ(124,
 166                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 167                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 168         CHAN5GHZ(128,
 169                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 170                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 171         CHAN5GHZ(132,
 172                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 173                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 174         CHAN5GHZ(136,
 175                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 176                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 177         CHAN5GHZ(140,
 178                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 179                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 180                  IEEE80211_CHAN_NO_HT40MINUS),
 181         /* UNII-3 */
 182         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 183         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 184         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 185         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 186         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 187 };
 188
 189 /*
 190  * The rate table is used for both 2.4G and 5G rates. The
 191  * latter being a subset as it does not support CCK rates.
 192  */
 193 static struct ieee80211_rate legacy_ratetable[] = {
 194         RATE(10, 0),
 195         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 196         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 197         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(60, 0),
 199         RATE(90, 0),
 200         RATE(120, 0),
 201         RATE(180, 0),
 202         RATE(240, 0),
 203         RATE(360, 0),
 204         RATE(480, 0),
 205         RATE(540, 0),
 206 };
 207
 208 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 209         .band = IEEE80211_BAND_2GHZ,
 210         .channels = brcms_2ghz_chantable,
 211         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 212         .bitrates = legacy_ratetable,
 213         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 214         .ht_cap = {
 215                    /* from include/linux/ieee80211.h */
 216                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 217                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 218                    .ht_supported = true,
 219                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 220                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 221                    .mcs = {
 222                            /* placeholders for now */
 223                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 224                            .rx_highest = cpu_to_le16(500),
 225                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 226                    }
 227 };
 228
 229 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 230         .band = IEEE80211_BAND_5GHZ,
 231         .channels = brcms_5ghz_nphy_chantable,
 232         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 233         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 234         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 235                         BRCMS_LEGACY_5G_RATE_OFFSET,
 236         .ht_cap = {
 237                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 238                           IEEE80211_HT_CAP_SGI_40,
 239                    .ht_supported = true,
 240                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 241                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 242                    .mcs = {
 243                            /* placeholders for now */
 244                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 245                            .rx_highest = cpu_to_le16(500),
 246                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 247                    }
 248 };
 249
 250 /* flags the given rate in rateset as requested */
 251 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 252 {
 253         u32 i;
 254
 255         for (i = 0; i < rs->count; i++) {
 256                 if (rate != (rs->rates[i] & 0x7f))
 257                         continue;
 258
 259                 if (is_br)
 260                         rs->rates[i] |= BRCMS_RATE_FLAG;
 261                 else
 262                         rs->rates[i] &= BRCMS_RATE_MASK;
 263                 return;
 264         }
 265 }
 266
 267 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 268 {
 269         struct brcms_info *wl = hw->priv;
 270
 271         spin_lock_bh(&wl->lock);
 272         if (!wl->pub->up) {
 273                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 274                 kfree_skb(skb);
 275                 goto done;
 276         }
 277         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 278  done:
 279         spin_unlock_bh(&wl->lock);
 280 }
 281
 282 static int brcms_ops_start(struct ieee80211_hw *hw)
 283 {
 284         struct brcms_info *wl = hw->priv;
 285         bool blocked;
 286         int err;
 287
 288         ieee80211_wake_queues(hw);
 289         spin_lock_bh(&wl->lock);
 290         blocked = brcms_rfkill_set_hw_state(wl);
 291         spin_unlock_bh(&wl->lock);
 292         if (!blocked)
 293                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 294
 295         spin_lock_bh(&wl->lock);
 296         /* avoid acknowledging frames before a non-monitor device is added */
 297         wl->mute_tx = true;
 298
 299         if (!wl->pub->up)
 300                 err = brcms_up(wl);
 301         else
 302                 err = -ENODEV;
 303         spin_unlock_bh(&wl->lock);
 304
 305         if (err != 0)
 306                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 307                           err);
 308         return err;
 309 }
 310
 311 static void brcms_ops_stop(struct ieee80211_hw *hw)
 312 {
 313         struct brcms_info *wl = hw->priv;
 314         int status;
 315
 316         ieee80211_stop_queues(hw);
 317
 318         if (wl->wlc == NULL)
 319                 return;
 320
 321         spin_lock_bh(&wl->lock);
 322         status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
 323                                    wl->wlc->hw->deviceid);
 324         spin_unlock_bh(&wl->lock);
 325         if (!status) {
 326                 wiphy_err(wl->wiphy,
 327                           "wl: brcms_ops_stop: chipmatch failed\n");
 328                 return;
 329         }
 330
 331         /* put driver in down state */
 332         spin_lock_bh(&wl->lock);
 333         brcms_down(wl);
 334         spin_unlock_bh(&wl->lock);
 335 }
 336
 337 static int
 338 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 339 {
 340         struct brcms_info *wl = hw->priv;
 341
 342         /* Just STA for now */
 343         if (vif->type != NL80211_IFTYPE_STATION) {
 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         wl->mute_tx = false;
 350         brcms_c_mute(wl->wlc, false);
 351
 352         return 0;
 353 }
 354
 355 static void
 356 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 357 {
 358 }
 359
 360 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 361 {
 362         struct ieee80211_conf *conf = &hw->conf;
 363         struct brcms_info *wl = hw->priv;
 364         int err = 0;
 365         int new_int;
 366         struct wiphy *wiphy = hw->wiphy;
 367
 368         spin_lock_bh(&wl->lock);
 369         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 370                 brcms_c_set_beacon_listen_interval(wl->wlc,
 371                                                    conf->listen_interval);
 372         }
 373         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 374                 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
 375                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 376                           "true" : "false");
 377         if (changed & IEEE80211_CONF_CHANGE_PS)
 378                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 379                           __func__, conf->flags & IEEE80211_CONF_PS ?
 380                           "true" : "false");
 381
 382         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 383                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 384                 if (err < 0) {
 385                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 386                                   __func__);
 387                         goto config_out;
 388                 }
 389                 new_int = brcms_c_get_tx_power(wl->wlc);
 390                 if (new_int != conf->power_level)
 391                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 392                                   "\n", __func__, conf->power_level,
 393                                   new_int);
 394         }
 395         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 396                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 397                     conf->channel_type == NL80211_CHAN_NO_HT)
 398                         err = brcms_c_set_channel(wl->wlc,
 399                                                   conf->channel->hw_value);
 400                 else
 401                         err = -ENOTSUPP;
 402         }
 403         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 404                 err = brcms_c_set_rate_limit(wl->wlc,
 405                                              conf->short_frame_max_tx_count,
 406                                              conf->long_frame_max_tx_count);
 407
 408  config_out:
 409         spin_unlock_bh(&wl->lock);
 410         return err;
 411 }
 412
 413 static void
 414 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 415                         struct ieee80211_vif *vif,
 416                         struct ieee80211_bss_conf *info, u32 changed)
 417 {
 418         struct brcms_info *wl = hw->priv;
 419         struct wiphy *wiphy = hw->wiphy;
 420
 421         if (changed & BSS_CHANGED_ASSOC) {
 422                 /* association status changed (associated/disassociated)
 423                  * also implies a change in the AID.
 424                  */
 425                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 426                           __func__, info->assoc ? "" : "dis");
 427                 spin_lock_bh(&wl->lock);
 428                 brcms_c_associate_upd(wl->wlc, info->assoc);
 429                 spin_unlock_bh(&wl->lock);
 430         }
 431         if (changed & BSS_CHANGED_ERP_SLOT) {
 432                 s8 val;
 433
 434                 /* slot timing changed */
 435                 if (info->use_short_slot)
 436                         val = 1;
 437                 else
 438                         val = 0;
 439                 spin_lock_bh(&wl->lock);
 440                 brcms_c_set_shortslot_override(wl->wlc, val);
 441                 spin_unlock_bh(&wl->lock);
 442         }
 443
 444         if (changed & BSS_CHANGED_HT) {
 445                 /* 802.11n parameters changed */
 446                 u16 mode = info->ht_operation_mode;
 447
 448                 spin_lock_bh(&wl->lock);
 449                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 450                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 451                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 452                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 453                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 454                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 455                 spin_unlock_bh(&wl->lock);
 456         }
 457         if (changed & BSS_CHANGED_BASIC_RATES) {
 458                 struct ieee80211_supported_band *bi;
 459                 u32 br_mask, i;
 460                 u16 rate;
 461                 struct brcm_rateset rs;
 462                 int error;
 463
 464                 /* retrieve the current rates */
 465                 spin_lock_bh(&wl->lock);
 466                 brcms_c_get_current_rateset(wl->wlc, &rs);
 467                 spin_unlock_bh(&wl->lock);
 468
 469                 br_mask = info->basic_rates;
 470                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 471                 for (i = 0; i < bi->n_bitrates; i++) {
 472                         /* convert to internal rate value */
 473                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 474
 475                         /* set/clear basic rate flag */
 476                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 477                         br_mask >>= 1;
 478                 }
 479
 480                 /* update the rate set */
 481                 spin_lock_bh(&wl->lock);
 482                 error = brcms_c_set_rateset(wl->wlc, &rs);
 483                 spin_unlock_bh(&wl->lock);
 484                 if (error)
 485                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 486                                   error);
 487         }
 488         if (changed & BSS_CHANGED_BEACON_INT) {
 489                 /* Beacon interval changed */
 490                 spin_lock_bh(&wl->lock);
 491                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 492                 spin_unlock_bh(&wl->lock);
 493         }
 494         if (changed & BSS_CHANGED_BSSID) {
 495                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 496                 spin_lock_bh(&wl->lock);
 497                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 498                 spin_unlock_bh(&wl->lock);
 499         }
 500         if (changed & BSS_CHANGED_BEACON)
 501                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 502                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 503
 504         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 505                 /* Beaconing should be enabled/disabled (beaconing modes) */
 506                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 507                           info->enable_beacon ? "true" : "false");
 508         }
 509
 510         if (changed & BSS_CHANGED_CQM) {
 511                 /* Connection quality monitor config changed */
 512                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 513                           " (implement)\n", __func__, info->cqm_rssi_thold,
 514                           info->cqm_rssi_hyst);
 515         }
 516
 517         if (changed & BSS_CHANGED_IBSS) {
 518                 /* IBSS join status changed */
 519                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 520                           info->ibss_joined ? "true" : "false");
 521         }
 522
 523         if (changed & BSS_CHANGED_ARP_FILTER) {
 524                 /* Hardware ARP filter address list or state changed */
 525                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 526                           " (implement)\n", __func__, info->arp_filter_enabled ?
 527                           "true" : "false", info->arp_addr_cnt);
 528         }
 529
 530         if (changed & BSS_CHANGED_QOS) {
 531                 /*
 532                  * QoS for this association was enabled/disabled.
 533                  * Note that it is only ever disabled for station mode.
 534                  */
 535                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 536                           info->qos ? "true" : "false");
 537         }
 538         return;
 539 }
 540
 541 static void
 542 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 543                         unsigned int changed_flags,
 544                         unsigned int *total_flags, u64 multicast)
 545 {
 546         struct brcms_info *wl = hw->priv;
 547         struct wiphy *wiphy = hw->wiphy;
 548
 549         changed_flags &= MAC_FILTERS;
 550         *total_flags &= MAC_FILTERS;
 551
 552         if (changed_flags & FIF_PROMISC_IN_BSS)
 553                 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
 554         if (changed_flags & FIF_ALLMULTI)
 555                 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
 556         if (changed_flags & FIF_FCSFAIL)
 557                 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
 558         if (changed_flags & FIF_CONTROL)
 559                 wiphy_dbg(wiphy, "FIF_CONTROL\n");
 560         if (changed_flags & FIF_OTHER_BSS)
 561                 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
 562         if (changed_flags & FIF_PSPOLL)
 563                 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
 564         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 565                 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
 566
 567         spin_lock_bh(&wl->lock);
 568         brcms_c_mac_promisc(wl->wlc, *total_flags);
 569         spin_unlock_bh(&wl->lock);
 570         return;
 571 }
 572
 573 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 574 {
 575         struct brcms_info *wl = hw->priv;
 576         spin_lock_bh(&wl->lock);
 577         brcms_c_scan_start(wl->wlc);
 578         spin_unlock_bh(&wl->lock);
 579         return;
 580 }
 581
 582 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 583 {
 584         struct brcms_info *wl = hw->priv;
 585         spin_lock_bh(&wl->lock);
 586         brcms_c_scan_stop(wl->wlc);
 587         spin_unlock_bh(&wl->lock);
 588         return;
 589 }
 590
 591 static int
 592 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 593                   const struct ieee80211_tx_queue_params *params)
 594 {
 595         struct brcms_info *wl = hw->priv;
 596
 597         spin_lock_bh(&wl->lock);
 598         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 599         spin_unlock_bh(&wl->lock);
 600
 601         return 0;
 602 }
 603
 604 static int
 605 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 606                struct ieee80211_sta *sta)
 607 {
 608         struct brcms_info *wl = hw->priv;
 609         struct scb *scb = &wl->wlc->pri_scb;
 610
 611         brcms_c_init_scb(scb);
 612
 613         wl->pub->global_ampdu = &(scb->scb_ampdu);
 614         wl->pub->global_ampdu->scb = scb;
 615         wl->pub->global_ampdu->max_pdu = 16;
 616
 617         /*
 618          * minstrel_ht initiates addBA on our behalf by calling
 619          * ieee80211_start_tx_ba_session()
 620          */
 621         return 0;
 622 }
 623
 624 static int
 625 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 626                     struct ieee80211_vif *vif,
 627                     enum ieee80211_ampdu_mlme_action action,
 628                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 629                     u8 buf_size)
 630 {
 631         struct brcms_info *wl = hw->priv;
 632         struct scb *scb = &wl->wlc->pri_scb;
 633         int status;
 634
 635         if (WARN_ON(scb->magic != SCB_MAGIC))
 636                 return -EIDRM;
 637         switch (action) {
 638         case IEEE80211_AMPDU_RX_START:
 639                 break;
 640         case IEEE80211_AMPDU_RX_STOP:
 641                 break;
 642         case IEEE80211_AMPDU_TX_START:
 643                 spin_lock_bh(&wl->lock);
 644                 status = brcms_c_aggregatable(wl->wlc, tid);
 645                 spin_unlock_bh(&wl->lock);
 646                 if (!status) {
 647                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 648                                   tid);
 649                         return -EINVAL;
 650                 }
 651                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 652                 break;
 653
 654         case IEEE80211_AMPDU_TX_STOP:
 655                 spin_lock_bh(&wl->lock);
 656                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 657                 spin_unlock_bh(&wl->lock);
 658                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 659                 break;
 660         case IEEE80211_AMPDU_TX_OPERATIONAL:
 661                 /*
 662                  * BA window size from ADDBA response ('buf_size') defines how
 663                  * many outstanding MPDUs are allowed for the BA stream by
 664                  * recipient and traffic class. 'ampdu_factor' gives maximum
 665                  * AMPDU size.
 666                  */
 667                 spin_lock_bh(&wl->lock);
 668                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 669                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 670                          sta->ht_cap.ampdu_factor)) - 1);
 671                 spin_unlock_bh(&wl->lock);
 672                 /* Power save wakeup */
 673                 break;
 674         default:
 675                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 676                           __func__);
 677         }
 678
 679         return 0;
 680 }
 681
 682 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 683 {
 684         struct brcms_info *wl = hw->priv;
 685         bool blocked;
 686
 687         spin_lock_bh(&wl->lock);
 688         blocked = brcms_c_check_radio_disabled(wl->wlc);
 689         spin_unlock_bh(&wl->lock);
 690
 691         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 692 }
 693
 694 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 695 {
 696         struct brcms_info *wl = hw->priv;
 697
 698         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 699
 700         /* wait for packet queue and dma fifos to run empty */
 701         spin_lock_bh(&wl->lock);
 702         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 703         spin_unlock_bh(&wl->lock);
 704 }
 705
 706 static const struct ieee80211_ops brcms_ops = {
 707         .tx = brcms_ops_tx,
 708         .start = brcms_ops_start,
 709         .stop = brcms_ops_stop,
 710         .add_interface = brcms_ops_add_interface,
 711         .remove_interface = brcms_ops_remove_interface,
 712         .config = brcms_ops_config,
 713         .bss_info_changed = brcms_ops_bss_info_changed,
 714         .configure_filter = brcms_ops_configure_filter,
 715         .sw_scan_start = brcms_ops_sw_scan_start,
 716         .sw_scan_complete = brcms_ops_sw_scan_complete,
 717         .conf_tx = brcms_ops_conf_tx,
 718         .sta_add = brcms_ops_sta_add,
 719         .ampdu_action = brcms_ops_ampdu_action,
 720         .rfkill_poll = brcms_ops_rfkill_poll,
 721         .flush = brcms_ops_flush,
 722 };
 723
 724 void brcms_dpc(unsigned long data)
 725 {
 726         struct brcms_info *wl;
 727
 728         wl = (struct brcms_info *) data;
 729
 730         spin_lock_bh(&wl->lock);
 731
 732         /* call the common second level interrupt handler */
 733         if (wl->pub->up) {
 734                 if (wl->resched) {
 735                         unsigned long flags;
 736
 737                         spin_lock_irqsave(&wl->isr_lock, flags);
 738                         brcms_c_intrsupd(wl->wlc);
 739                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 740                 }
 741
 742                 wl->resched = brcms_c_dpc(wl->wlc, true);
 743         }
 744
 745         /* brcms_c_dpc() may bring the driver down */
 746         if (!wl->pub->up)
 747                 goto done;
 748
 749         /* re-schedule dpc */
 750         if (wl->resched)
 751                 tasklet_schedule(&wl->tasklet);
 752         else
 753                 /* re-enable interrupts */
 754                 brcms_intrson(wl);
 755
 756  done:
 757         spin_unlock_bh(&wl->lock);
 758 }
 759
 760 /*
 761  * Precondition: Since this function is called in brcms_pci_probe() context,
 762  * no locking is required.
 763  */
 764 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 765 {
 766         int status;
 767         struct device *device = &pdev->dev;
 768         char fw_name[100];
 769         int i;
 770
 771         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 772         for (i = 0; i < MAX_FW_IMAGES; i++) {
 773                 if (brcms_firmwares[i] == NULL)
 774                         break;
 775                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 776                         UCODE_LOADER_API_VER);
 777                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 778                 if (status) {
 779                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 780                                   KBUILD_MODNAME, fw_name);
 781                         return status;
 782                 }
 783                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 784                         UCODE_LOADER_API_VER);
 785                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 786                 if (status) {
 787                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 788                                   KBUILD_MODNAME, fw_name);
 789                         return status;
 790                 }
 791                 wl->fw.hdr_num_entries[i] =
 792                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 793         }
 794         wl->fw.fw_cnt = i;
 795         return brcms_ucode_data_init(wl, &wl->ucode);
 796 }
 797
 798 /*
 799  * Precondition: Since this function is called in brcms_pci_probe() context,
 800  * no locking is required.
 801  */
 802 static void brcms_release_fw(struct brcms_info *wl)
 803 {
 804         int i;
 805         for (i = 0; i < MAX_FW_IMAGES; i++) {
 806                 release_firmware(wl->fw.fw_bin[i]);
 807                 release_firmware(wl->fw.fw_hdr[i]);
 808         }
 809 }
 810
 811 /**
 812  * This function frees the WL per-device resources.
 813  *
 814  * This function frees resources owned by the WL device pointed to
 815  * by the wl parameter.
 816  *
 817  * precondition: can both be called locked and unlocked
 818  *
 819  */
 820 static void brcms_free(struct brcms_info *wl)
 821 {
 822         struct brcms_timer *t, *next;
 823
 824         /* free ucode data */
 825         if (wl->fw.fw_cnt)
 826                 brcms_ucode_data_free(&wl->ucode);
 827         if (wl->irq)
 828                 free_irq(wl->irq, wl);
 829
 830         /* kill dpc */
 831         tasklet_kill(&wl->tasklet);
 832
 833         if (wl->pub)
 834                 brcms_c_module_unregister(wl->pub, "linux", wl);
 835
 836         /* free common resources */
 837         if (wl->wlc) {
 838                 brcms_c_detach(wl->wlc);
 839                 wl->wlc = NULL;
 840                 wl->pub = NULL;
 841         }
 842
 843         /* virtual interface deletion is deferred so we cannot spinwait */
 844
 845         /* wait for all pending callbacks to complete */
 846         while (atomic_read(&wl->callbacks) > 0)
 847                 schedule();
 848
 849         /* free timers */
 850         for (t = wl->timers; t; t = next) {
 851                 next = t->next;
 852 #ifdef DEBUG
 853                 kfree(t->name);
 854 #endif
 855                 kfree(t);
 856         }
 857 }
 858
 859 /*
 860 * called from both kernel as from this kernel module (error flow on attach)
 861 * precondition: perimeter lock is not acquired.
 862 */
 863 static void brcms_remove(struct bcma_device *pdev)
 864 {
 865         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 866         struct brcms_info *wl = hw->priv;
 867
 868         if (wl->wlc) {
 869                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 870                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 871                 ieee80211_unregister_hw(hw);
 872         }
 873
 874         brcms_free(wl);
 875
 876         bcma_set_drvdata(pdev, NULL);
 877         ieee80211_free_hw(hw);
 878 }
 879
 880 static irqreturn_t brcms_isr(int irq, void *dev_id)
 881 {
 882         struct brcms_info *wl;
 883         bool ours, wantdpc;
 884
 885         wl = (struct brcms_info *) dev_id;
 886
 887         spin_lock(&wl->isr_lock);
 888
 889         /* call common first level interrupt handler */
 890         ours = brcms_c_isr(wl->wlc, &wantdpc);
 891         if (ours) {
 892                 /* if more to do... */
 893                 if (wantdpc) {
 894
 895                         /* ...and call the second level interrupt handler */
 896                         /* schedule dpc */
 897                         tasklet_schedule(&wl->tasklet);
 898                 }
 899         }
 900
 901         spin_unlock(&wl->isr_lock);
 902
 903         return IRQ_RETVAL(ours);
 904 }
 905
 906 /*
 907  * is called in brcms_pci_probe() context, therefore no locking required.
 908  */
 909 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 910 {
 911         struct brcms_info *wl = hw->priv;
 912         struct brcms_c_info *wlc = wl->wlc;
 913         struct ieee80211_supported_band *band;
 914         int has_5g = 0;
 915         u16 phy_type;
 916
 917         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 918         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 919
 920         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 921         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 922                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 923                 *band = brcms_band_2GHz_nphy_template;
 924                 if (phy_type == PHY_TYPE_LCN) {
 925                         /* Single stream */
 926                         band->ht_cap.mcs.rx_mask[1] = 0;
 927                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 928                 }
 929                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 930         } else {
 931                 return -EPERM;
 932         }
 933
 934         /* Assume all bands use the same phy.  True for 11n devices. */
 935         if (wl->pub->_nbands > 1) {
 936                 has_5g++;
 937                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 938                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 939                         *band = brcms_band_5GHz_nphy_template;
 940                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 941                 } else {
 942                         return -EPERM;
 943                 }
 944         }
 945         return 0;
 946 }
 947
 948 /*
 949  * is called in brcms_pci_probe() context, therefore no locking required.
 950  */
 951 static int ieee_hw_init(struct ieee80211_hw *hw)
 952 {
 953         hw->flags = IEEE80211_HW_SIGNAL_DBM
 954             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 955             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 956             | IEEE80211_HW_AMPDU_AGGREGATION;
 957
 958         hw->extra_tx_headroom = brcms_c_get_header_len();
 959         hw->queues = N_TX_QUEUES;
 960         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 961
 962         /* channel change time is dependent on chip and band  */
 963         hw->channel_change_time = 7 * 1000;
 964         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 965
 966         hw->rate_control_algorithm = "minstrel_ht";
 967
 968         hw->sta_data_size = 0;
 969         return ieee_hw_rate_init(hw);
 970 }
 971
 972 /**
 973  * attach to the WL device.
 974  *
 975  * Attach to the WL device identified by vendor and device parameters.
 976  * regs is a host accessible memory address pointing to WL device registers.
 977  *
 978  * brcms_attach is not defined as static because in the case where no bus
 979  * is defined, wl_attach will never be called, and thus, gcc will issue
 980  * a warning that this function is defined but not used if we declare
 981  * it as static.
 982  *
 983  *
 984  * is called in brcms_bcma_probe() context, therefore no locking required.
 985  */
 986 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
 987 {
 988         struct brcms_info *wl = NULL;
 989         int unit, err;
 990         struct ieee80211_hw *hw;
 991         u8 perm[ETH_ALEN];
 992
 993         unit = n_adapters_found;
 994         err = 0;
 995
 996         if (unit < 0)
 997                 return NULL;
 998
 999         /* allocate private info */
1000         hw = bcma_get_drvdata(pdev);
1001         if (hw != NULL)
1002                 wl = hw->priv;
1003         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1004                 return NULL;
1005         wl->wiphy = hw->wiphy;
1006
1007         atomic_set(&wl->callbacks, 0);
1008
1009         /* setup the bottom half handler */
1010         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1011
1012         spin_lock_init(&wl->lock);
1013         spin_lock_init(&wl->isr_lock);
1014
1015         /* prepare ucode */
1016         if (brcms_request_fw(wl, pdev) < 0) {
1017                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1018                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1019                 brcms_release_fw(wl);
1020                 brcms_remove(pdev);
1021                 return NULL;
1022         }
1023
1024         /* common load-time initialization */
1025         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1026         brcms_release_fw(wl);
1027         if (!wl->wlc) {
1028                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1029                           KBUILD_MODNAME, err);
1030                 goto fail;
1031         }
1032         wl->pub = brcms_c_pub(wl->wlc);
1033
1034         wl->pub->ieee_hw = hw;
1035
1036         /* register our interrupt handler */
1037         if (request_irq(pdev->irq, brcms_isr,
1038                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1039                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1040                 goto fail;
1041         }
1042         wl->irq = pdev->irq;
1043
1044         /* register module */
1045         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1046
1047         if (ieee_hw_init(hw)) {
1048                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1049                           __func__);
1050                 goto fail;
1051         }
1052
1053         brcms_c_regd_init(wl->wlc);
1054
1055         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1056         if (WARN_ON(!is_valid_ether_addr(perm)))
1057                 goto fail;
1058         SET_IEEE80211_PERM_ADDR(hw, perm);
1059
1060         err = ieee80211_register_hw(hw);
1061         if (err)
1062                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1063                           "%d\n", __func__, err);
1064
1065         if (wl->pub->srom_ccode[0] &&
1066             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1067                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1068
1069         n_adapters_found++;
1070         return wl;
1071
1072 fail:
1073         brcms_free(wl);
1074         return NULL;
1075 }
1076
1077
1078
1079 /**
1080  * determines if a device is a WL device, and if so, attaches it.
1081  *
1082  * This function determines if a device pointed to by pdev is a WL device,
1083  * and if so, performs a brcms_attach() on it.
1084  *
1085  * Perimeter lock is initialized in the course of this function.
1086  */
1087 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1088 {
1089         struct brcms_info *wl;
1090         struct ieee80211_hw *hw;
1091
1092         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1093                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1094                  pdev->irq);
1095
1096         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1097             (pdev->id.id != BCMA_CORE_80211))
1098                 return -ENODEV;
1099
1100         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1101         if (!hw) {
1102                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1103                 return -ENOMEM;
1104         }
1105
1106         SET_IEEE80211_DEV(hw, &pdev->dev);
1107
1108         bcma_set_drvdata(pdev, hw);
1109
1110         memset(hw->priv, 0, sizeof(*wl));
1111
1112         wl = brcms_attach(pdev);
1113         if (!wl) {
1114                 pr_err("%s: brcms_attach failed!\n", __func__);
1115                 return -ENODEV;
1116         }
1117         return 0;
1118 }
1119
1120 static int brcms_suspend(struct bcma_device *pdev)
1121 {
1122         struct brcms_info *wl;
1123         struct ieee80211_hw *hw;
1124
1125         hw = bcma_get_drvdata(pdev);
1126         wl = hw->priv;
1127         if (!wl) {
1128                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1129                        __func__);
1130                 return -ENODEV;
1131         }
1132
1133         /* only need to flag hw is down for proper resume */
1134         spin_lock_bh(&wl->lock);
1135         wl->pub->hw_up = false;
1136         spin_unlock_bh(&wl->lock);
1137
1138         pr_debug("brcms_suspend ok\n");
1139
1140         return 0;
1141 }
1142
1143 static int brcms_resume(struct bcma_device *pdev)
1144 {
1145         pr_debug("brcms_resume ok\n");
1146         return 0;
1147 }
1148
1149 static struct bcma_driver brcms_bcma_driver = {
1150         .name     = KBUILD_MODNAME,
1151         .probe    = brcms_bcma_probe,
1152         .suspend  = brcms_suspend,
1153         .resume   = brcms_resume,
1154         .remove   = __devexit_p(brcms_remove),
1155         .id_table = brcms_coreid_table,
1156 };
1157
1158 /**
1159  * This is the main entry point for the brcmsmac driver.
1160  *
1161  * This function is scheduled upon module initialization and
1162  * does the driver registration, which result in brcms_bcma_probe()
1163  * call resulting in the driver bringup.
1164  */
1165 static void brcms_driver_init(struct work_struct *work)
1166 {
1167         int error;
1168
1169         error = bcma_driver_register(&brcms_bcma_driver);
1170         if (error)
1171                 pr_err("%s: register returned %d\n", __func__, error);
1172 }
1173
1174 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1175
1176 static int __init brcms_module_init(void)
1177 {
1178 #ifdef DEBUG
1179         if (msglevel != 0xdeadbeef)
1180                 brcm_msg_level = msglevel;
1181 #endif
1182         if (!schedule_work(&brcms_driver_work))
1183                 return -EBUSY;
1184
1185         return 0;
1186 }
1187
1188 /**
1189  * This function unloads the brcmsmac driver from the system.
1190  *
1191  * This function unconditionally unloads the brcmsmac driver module from the
1192  * system.
1193  *
1194  */
1195 static void __exit brcms_module_exit(void)
1196 {
1197         cancel_work_sync(&brcms_driver_work);
1198         bcma_driver_unregister(&brcms_bcma_driver);
1199 }
1200
1201 module_init(brcms_module_init);
1202 module_exit(brcms_module_exit);
1203
1204 /*
1205  * precondition: perimeter lock has been acquired
1206  */
1207 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1208                          bool state, int prio)
1209 {
1210         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1211 }
1212
1213 /*
1214  * precondition: perimeter lock has been acquired
1215  */
1216 void brcms_init(struct brcms_info *wl)
1217 {
1218         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1219         brcms_reset(wl);
1220         brcms_c_init(wl->wlc, wl->mute_tx);
1221 }
1222
1223 /*
1224  * precondition: perimeter lock has been acquired
1225  */
1226 uint brcms_reset(struct brcms_info *wl)
1227 {
1228         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1229         brcms_c_reset(wl->wlc);
1230
1231         /* dpc will not be rescheduled */
1232         wl->resched = false;
1233
1234         return 0;
1235 }
1236
1237 void brcms_fatal_error(struct brcms_info *wl)
1238 {
1239         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1240                   wl->wlc->pub->unit);
1241         brcms_reset(wl);
1242         ieee80211_restart_hw(wl->pub->ieee_hw);
1243 }
1244
1245 /*
1246  * These are interrupt on/off entry points. Disable interrupts
1247  * during interrupt state transition.
1248  */
1249 void brcms_intrson(struct brcms_info *wl)
1250 {
1251         unsigned long flags;
1252
1253         spin_lock_irqsave(&wl->isr_lock, flags);
1254         brcms_c_intrson(wl->wlc);
1255         spin_unlock_irqrestore(&wl->isr_lock, flags);
1256 }
1257
1258 u32 brcms_intrsoff(struct brcms_info *wl)
1259 {
1260         unsigned long flags;
1261         u32 status;
1262
1263         spin_lock_irqsave(&wl->isr_lock, flags);
1264         status = brcms_c_intrsoff(wl->wlc);
1265         spin_unlock_irqrestore(&wl->isr_lock, flags);
1266         return status;
1267 }
1268
1269 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1270 {
1271         unsigned long flags;
1272
1273         spin_lock_irqsave(&wl->isr_lock, flags);
1274         brcms_c_intrsrestore(wl->wlc, macintmask);
1275         spin_unlock_irqrestore(&wl->isr_lock, flags);
1276 }
1277
1278 /*
1279  * precondition: perimeter lock has been acquired
1280  */
1281 int brcms_up(struct brcms_info *wl)
1282 {
1283         int error = 0;
1284
1285         if (wl->pub->up)
1286                 return 0;
1287
1288         error = brcms_c_up(wl->wlc);
1289
1290         return error;
1291 }
1292
1293 /*
1294  * precondition: perimeter lock has been acquired
1295  */
1296 void brcms_down(struct brcms_info *wl)
1297 {
1298         uint callbacks, ret_val = 0;
1299
1300         /* call common down function */
1301         ret_val = brcms_c_down(wl->wlc);
1302         callbacks = atomic_read(&wl->callbacks) - ret_val;
1303
1304         /* wait for down callbacks to complete */
1305         spin_unlock_bh(&wl->lock);
1306
1307         /* For HIGH_only driver, it's important to actually schedule other work,
1308          * not just spin wait since everything runs at schedule level
1309          */
1310         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1311
1312         spin_lock_bh(&wl->lock);
1313 }
1314
1315 /*
1316 * precondition: perimeter lock is not acquired
1317  */
1318 static void _brcms_timer(struct work_struct *work)
1319 {
1320         struct brcms_timer *t = container_of(work, struct brcms_timer,
1321                                              dly_wrk.work);
1322
1323         spin_lock_bh(&t->wl->lock);
1324
1325         if (t->set) {
1326                 if (t->periodic) {
1327                         atomic_inc(&t->wl->callbacks);
1328                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1329                                                      &t->dly_wrk,
1330                                                      msecs_to_jiffies(t->ms));
1331                 } else {
1332                         t->set = false;
1333                 }
1334
1335                 t->fn(t->arg);
1336         }
1337
1338         atomic_dec(&t->wl->callbacks);
1339
1340         spin_unlock_bh(&t->wl->lock);
1341 }
1342
1343 /*
1344  * Adds a timer to the list. Caller supplies a timer function.
1345  * Is called from wlc.
1346  *
1347  * precondition: perimeter lock has been acquired
1348  */
1349 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1350                                      void (*fn) (void *arg),
1351                                      void *arg, const char *name)
1352 {
1353         struct brcms_timer *t;
1354
1355         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1356         if (!t)
1357                 return NULL;
1358
1359         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1360         t->wl = wl;
1361         t->fn = fn;
1362         t->arg = arg;
1363         t->next = wl->timers;
1364         wl->timers = t;
1365
1366 #ifdef DEBUG
1367         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1368         if (t->name)
1369                 strcpy(t->name, name);
1370 #endif
1371
1372         return t;
1373 }
1374
1375 /*
1376  * adds only the kernel timer since it's going to be more accurate
1377  * as well as it's easier to make it periodic
1378  *
1379  * precondition: perimeter lock has been acquired
1380  */
1381 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1382 {
1383         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1384
1385 #ifdef DEBUG
1386         if (t->set)
1387                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1388                           __func__, t->name, periodic);
1389 #endif
1390         t->ms = ms;
1391         t->periodic = (bool) periodic;
1392         t->set = true;
1393
1394         atomic_inc(&t->wl->callbacks);
1395
1396         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1397 }
1398
1399 /*
1400  * return true if timer successfully deleted, false if still pending
1401  *
1402  * precondition: perimeter lock has been acquired
1403  */
1404 bool brcms_del_timer(struct brcms_timer *t)
1405 {
1406         if (t->set) {
1407                 t->set = false;
1408                 if (!cancel_delayed_work(&t->dly_wrk))
1409                         return false;
1410
1411                 atomic_dec(&t->wl->callbacks);
1412         }
1413
1414         return true;
1415 }
1416
1417 /*
1418  * precondition: perimeter lock has been acquired
1419  */
1420 void brcms_free_timer(struct brcms_timer *t)
1421 {
1422         struct brcms_info *wl = t->wl;
1423         struct brcms_timer *tmp;
1424
1425         /* delete the timer in case it is active */
1426         brcms_del_timer(t);
1427
1428         if (wl->timers == t) {
1429                 wl->timers = wl->timers->next;
1430 #ifdef DEBUG
1431                 kfree(t->name);
1432 #endif
1433                 kfree(t);
1434                 return;
1435
1436         }
1437
1438         tmp = wl->timers;
1439         while (tmp) {
1440                 if (tmp->next == t) {
1441                         tmp->next = t->next;
1442 #ifdef DEBUG
1443                         kfree(t->name);
1444 #endif
1445                         kfree(t);
1446                         return;
1447                 }
1448                 tmp = tmp->next;
1449         }
1450
1451 }
1452
1453 /*
1454  * precondition: perimeter lock has been acquired
1455  */
1456 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1457 {
1458         int i, entry;
1459         const u8 *pdata;
1460         struct firmware_hdr *hdr;
1461         for (i = 0; i < wl->fw.fw_cnt; i++) {
1462                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1463                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1464                      entry++, hdr++) {
1465                         u32 len = le32_to_cpu(hdr->len);
1466                         if (le32_to_cpu(hdr->idx) == idx) {
1467                                 pdata = wl->fw.fw_bin[i]->data +
1468                                         le32_to_cpu(hdr->offset);
1469                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1470                                 if (*pbuf == NULL)
1471                                         goto fail;
1472
1473                                 return 0;
1474                         }
1475                 }
1476         }
1477         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1478                   idx);
1479         *pbuf = NULL;
1480 fail:
1481         return -ENODATA;
1482 }
1483
1484 /*
1485  * Precondition: Since this function is called in brcms_bcma_probe() context,
1486  * no locking is required.
1487  */
1488 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1489 {
1490         int i, entry;
1491         const u8 *pdata;
1492         struct firmware_hdr *hdr;
1493         for (i = 0; i < wl->fw.fw_cnt; i++) {
1494                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1495                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1496                      entry++, hdr++) {
1497                         if (le32_to_cpu(hdr->idx) == idx) {
1498                                 pdata = wl->fw.fw_bin[i]->data +
1499                                         le32_to_cpu(hdr->offset);
1500                                 if (le32_to_cpu(hdr->len) != 4) {
1501                                         wiphy_err(wl->wiphy,
1502                                                   "ERROR: fw hdr len\n");
1503                                         return -ENOMSG;
1504                                 }
1505                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1506                                 return 0;
1507                         }
1508                 }
1509         }
1510         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1511         return -ENOMSG;
1512 }
1513
1514 /*
1515  * precondition: can both be called locked and unlocked
1516  */
1517 void brcms_ucode_free_buf(void *p)
1518 {
1519         kfree(p);
1520 }
1521
1522 /*
1523  * checks validity of all firmware images loaded from user space
1524  *
1525  * Precondition: Since this function is called in brcms_bcma_probe() context,
1526  * no locking is required.
1527  */
1528 int brcms_check_firmwares(struct brcms_info *wl)
1529 {
1530         int i;
1531         int entry;
1532         int rc = 0;
1533         const struct firmware *fw;
1534         const struct firmware *fw_hdr;
1535         struct firmware_hdr *ucode_hdr;
1536         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1537                 fw =  wl->fw.fw_bin[i];
1538                 fw_hdr = wl->fw.fw_hdr[i];
1539                 if (fw == NULL && fw_hdr == NULL) {
1540                         break;
1541                 } else if (fw == NULL || fw_hdr == NULL) {
1542                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1543                                   __func__);
1544                         rc = -EBADF;
1545                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1546                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1547                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1548                                 sizeof(struct firmware_hdr));
1549                         rc = -EBADF;
1550                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1551                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1552                                   "%zu\n", __func__, fw->size);
1553                         rc = -EBADF;
1554                 } else {
1555                         /* check if ucode section overruns firmware image */
1556                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1557                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1558                              !rc; entry++, ucode_hdr++) {
1559                                 if (le32_to_cpu(ucode_hdr->offset) +
1560                                     le32_to_cpu(ucode_hdr->len) >
1561                                     fw->size) {
1562                                         wiphy_err(wl->wiphy,
1563                                                   "%s: conflicting bin/hdr\n",
1564                                                   __func__);
1565                                         rc = -EBADF;
1566                                 }
1567                         }
1568                 }
1569         }
1570         if (rc == 0 && wl->fw.fw_cnt != i) {
1571                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1572                         wl->fw.fw_cnt);
1573                 rc = -EBADF;
1574         }
1575         return rc;
1576 }
1577
1578 /*
1579  * precondition: perimeter lock has been acquired
1580  */
1581 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1582 {
1583         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1584
1585         spin_unlock_bh(&wl->lock);
1586         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1587         if (blocked)
1588                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1589         spin_lock_bh(&wl->lock);
1590         return blocked;
1591 }
1592
1593 /*
1594  * precondition: perimeter lock has been acquired
1595  */
1596 void brcms_msleep(struct brcms_info *wl, uint ms)
1597 {
1598         spin_unlock_bh(&wl->lock);
1599         msleep(ms);
1600         spin_lock_bh(&wl->lock);
1601 }