drivers/staging/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
  35 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  36
  37 #define LOCK(wl)        spin_lock_bh(&(wl)->lock)
  38 #define UNLOCK(wl)      spin_unlock_bh(&(wl)->lock)
  39
  40 /* locking from inside brcms_isr */
  41 #define ISR_LOCK(wl, flags)\
  42         do {\
  43                 spin_lock(&(wl)->isr_lock);\
  44                 (void)(flags); } \
  45         while (0)
  46
  47 #define ISR_UNLOCK(wl, flags)\
  48         do {\
  49                 spin_unlock(&(wl)->isr_lock);\
  50                 (void)(flags); } \
  51         while (0)
  52
  53 /* locking under LOCK() to synchronize with brcms_isr */
  54 #define INT_LOCK(wl, flags)     spin_lock_irqsave(&(wl)->isr_lock, flags)
  55 #define INT_UNLOCK(wl, flags)   spin_unlock_irqrestore(&(wl)->isr_lock, flags)
  56
  57 /* Flags we support */
  58 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  59         FIF_ALLMULTI | \
  60         FIF_FCSFAIL | \
  61         FIF_PLCPFAIL | \
  62         FIF_CONTROL | \
  63         FIF_OTHER_BSS | \
  64         FIF_BCN_PRBRESP_PROMISC)
  65
  66 #define CHAN2GHZ(channel, freqency, chflags)  { \
  67         .band = IEEE80211_BAND_2GHZ, \
  68         .center_freq = (freqency), \
  69         .hw_value = (channel), \
  70         .flags = chflags, \
  71         .max_antenna_gain = 0, \
  72         .max_power = 19, \
  73 }
  74
  75 #define CHAN5GHZ(channel, chflags)  { \
  76         .band = IEEE80211_BAND_5GHZ, \
  77         .center_freq = 5000 + 5*(channel), \
  78         .hw_value = (channel), \
  79         .flags = chflags, \
  80         .max_antenna_gain = 0, \
  81         .max_power = 21, \
  82 }
  83
  84 #define RATE(rate100m, _flags) { \
  85         .bitrate = (rate100m), \
  86         .flags = (_flags), \
  87         .hw_value = (rate100m / 5), \
  88 }
  89
  90 struct firmware_hdr {
  91         u32 offset;
  92         u32 len;
  93         u32 idx;
  94 };
  95
  96 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  97         "brcm/bcm43xx",
  98         NULL
  99 };
 100
 101 static int n_adapters_found;
 102
 103 MODULE_AUTHOR("Broadcom Corporation");
 104 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
 105 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
 106 MODULE_LICENSE("Dual BSD/GPL");
 107
 108 /* recognized PCI IDs */
 109 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
 110         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
 111         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
 112         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
 113         { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
 114         {0}
 115 };
 116
 117 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
 118
 119 #ifdef BCMDBG
 120 static int msglevel = 0xdeadbeef;
 121 module_param(msglevel, int, 0);
 122 #endif                          /* BCMDBG */
 123
 124 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 125         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 126         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 127         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 128         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 129         CHAN2GHZ(5, 2432, 0),
 130         CHAN2GHZ(6, 2437, 0),
 131         CHAN2GHZ(7, 2442, 0),
 132         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 133         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 134         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 135         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 136         CHAN2GHZ(12, 2467,
 137                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 138                  IEEE80211_CHAN_NO_HT40PLUS),
 139         CHAN2GHZ(13, 2472,
 140                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 141                  IEEE80211_CHAN_NO_HT40PLUS),
 142         CHAN2GHZ(14, 2484,
 143                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 144                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 145 };
 146
 147 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 148         /* UNII-1 */
 149         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 150         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 151         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 152         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 153         /* UNII-2 */
 154         CHAN5GHZ(52,
 155                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 156                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 157         CHAN5GHZ(56,
 158                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 159                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 160         CHAN5GHZ(60,
 161                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 162                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 163         CHAN5GHZ(64,
 164                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 165                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 166         /* MID */
 167         CHAN5GHZ(100,
 168                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 169                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 170         CHAN5GHZ(104,
 171                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 172                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 173         CHAN5GHZ(108,
 174                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 175                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 176         CHAN5GHZ(112,
 177                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 178                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 179         CHAN5GHZ(116,
 180                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 181                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 182         CHAN5GHZ(120,
 183                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 184                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 185         CHAN5GHZ(124,
 186                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 187                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 188         CHAN5GHZ(128,
 189                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 190                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 191         CHAN5GHZ(132,
 192                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 193                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 194         CHAN5GHZ(136,
 195                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 196                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 197         CHAN5GHZ(140,
 198                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 199                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 200                  IEEE80211_CHAN_NO_HT40MINUS),
 201         /* UNII-3 */
 202         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 203         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 204         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 205         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 206         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 207 };
 208
 209 /*
 210  * The rate table is used for both 2.4G and 5G rates. The
 211  * latter being a subset as it does not support CCK rates.
 212  */
 213 static struct ieee80211_rate legacy_ratetable[] = {
 214         RATE(10, 0),
 215         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 216         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 217         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 218         RATE(60, 0),
 219         RATE(90, 0),
 220         RATE(120, 0),
 221         RATE(180, 0),
 222         RATE(240, 0),
 223         RATE(360, 0),
 224         RATE(480, 0),
 225         RATE(540, 0),
 226 };
 227
 228 static struct ieee80211_supported_band brcms_band_2GHz_nphy = {
 229         .band = IEEE80211_BAND_2GHZ,
 230         .channels = brcms_2ghz_chantable,
 231         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 232         .bitrates = legacy_ratetable,
 233         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 234         .ht_cap = {
 235                    /* from include/linux/ieee80211.h */
 236                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 237                    IEEE80211_HT_CAP_SGI_20 |
 238                    IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT,
 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 = 500,
 246                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 247                    }
 248 };
 249
 250 static struct ieee80211_supported_band brcms_band_5GHz_nphy = {
 251         .band = IEEE80211_BAND_5GHZ,
 252         .channels = brcms_5ghz_nphy_chantable,
 253         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 254         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 255         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 256                         BRCMS_LEGACY_5G_RATE_OFFSET,
 257         .ht_cap = {
 258                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 259                           IEEE80211_HT_CAP_SGI_40 |
 260                           IEEE80211_HT_CAP_40MHZ_INTOLERANT, /* No 40 mhz yet */
 261                    .ht_supported = true,
 262                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 263                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 264                    .mcs = {
 265                            /* placeholders for now */
 266                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 267                            .rx_highest = 500,
 268                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 269                    }
 270 };
 271
 272 /* flags the given rate in rateset as requested */
 273 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 274 {
 275         u32 i;
 276
 277         for (i = 0; i < rs->count; i++) {
 278                 if (rate != (rs->rates[i] & 0x7f))
 279                         continue;
 280
 281                 if (is_br)
 282                         rs->rates[i] |= BRCMS_RATE_FLAG;
 283                 else
 284                         rs->rates[i] &= BRCMS_RATE_MASK;
 285                 return;
 286         }
 287 }
 288
 289 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 290 {
 291         struct brcms_info *wl = hw->priv;
 292
 293         LOCK(wl);
 294         if (!wl->pub->up) {
 295                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 296                 kfree_skb(skb);
 297                 goto done;
 298         }
 299         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 300  done:
 301         UNLOCK(wl);
 302 }
 303
 304 static int brcms_ops_start(struct ieee80211_hw *hw)
 305 {
 306         struct brcms_info *wl = hw->priv;
 307         bool blocked;
 308
 309         ieee80211_wake_queues(hw);
 310         LOCK(wl);
 311         blocked = brcms_rfkill_set_hw_state(wl);
 312         UNLOCK(wl);
 313         if (!blocked)
 314                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 315
 316         return 0;
 317 }
 318
 319 static void brcms_ops_stop(struct ieee80211_hw *hw)
 320 {
 321         ieee80211_stop_queues(hw);
 322 }
 323
 324 static int
 325 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 326 {
 327         struct brcms_info *wl;
 328         int err;
 329
 330         /* Just STA for now */
 331         if (vif->type != NL80211_IFTYPE_AP &&
 332             vif->type != NL80211_IFTYPE_MESH_POINT &&
 333             vif->type != NL80211_IFTYPE_STATION &&
 334             vif->type != NL80211_IFTYPE_WDS &&
 335             vif->type != NL80211_IFTYPE_ADHOC) {
 336                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 337                           " STA for now\n", __func__, vif->type);
 338                 return -EOPNOTSUPP;
 339         }
 340
 341         wl = hw->priv;
 342         LOCK(wl);
 343         err = brcms_up(wl);
 344         UNLOCK(wl);
 345
 346         if (err != 0)
 347                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 348                           err);
 349
 350         return err;
 351 }
 352
 353 static void
 354 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 355 {
 356         struct brcms_info *wl;
 357
 358         wl = hw->priv;
 359
 360         /* put driver in down state */
 361         LOCK(wl);
 362         brcms_down(wl);
 363         UNLOCK(wl);
 364 }
 365
 366 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 367 {
 368         struct ieee80211_conf *conf = &hw->conf;
 369         struct brcms_info *wl = hw->priv;
 370         int err = 0;
 371         int new_int;
 372         struct wiphy *wiphy = hw->wiphy;
 373
 374         LOCK(wl);
 375         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 376                 brcms_c_set_beacon_listen_interval(wl->wlc,
 377                                                    conf->listen_interval);
 378         }
 379         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 380                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 381                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 382                           "true" : "false");
 383         if (changed & IEEE80211_CONF_CHANGE_PS)
 384                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 385                           __func__, conf->flags & IEEE80211_CONF_PS ?
 386                           "true" : "false");
 387
 388         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 389                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 390                 if (err < 0) {
 391                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 392                                   __func__);
 393                         goto config_out;
 394                 }
 395                 new_int = brcms_c_get_tx_power(wl->wlc);
 396                 if (new_int != conf->power_level)
 397                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 398                                   "\n", __func__, conf->power_level,
 399                                   new_int);
 400         }
 401         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 402                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 403                     conf->channel_type == NL80211_CHAN_NO_HT)
 404                         err = brcms_c_set_channel(wl->wlc,
 405                                                   conf->channel->hw_value);
 406                 else
 407                         err = -ENOTSUPP;
 408         }
 409         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 410                 err = brcms_c_set_rate_limit(wl->wlc,
 411                                              conf->short_frame_max_tx_count,
 412                                              conf->long_frame_max_tx_count);
 413
 414  config_out:
 415         UNLOCK(wl);
 416         return err;
 417 }
 418
 419 static void
 420 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 421                         struct ieee80211_vif *vif,
 422                         struct ieee80211_bss_conf *info, u32 changed)
 423 {
 424         struct brcms_info *wl = hw->priv;
 425         struct wiphy *wiphy = hw->wiphy;
 426
 427         if (changed & BSS_CHANGED_ASSOC) {
 428                 /* association status changed (associated/disassociated)
 429                  * also implies a change in the AID.
 430                  */
 431                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 432                           __func__, info->assoc ? "" : "dis");
 433                 LOCK(wl);
 434                 brcms_c_associate_upd(wl->wlc, info->assoc);
 435                 UNLOCK(wl);
 436         }
 437         if (changed & BSS_CHANGED_ERP_SLOT) {
 438                 s8 val;
 439
 440                 /* slot timing changed */
 441                 if (info->use_short_slot)
 442                         val = 1;
 443                 else
 444                         val = 0;
 445                 LOCK(wl);
 446                 brcms_c_set_shortslot_override(wl->wlc, val);
 447                 UNLOCK(wl);
 448         }
 449
 450         if (changed & BSS_CHANGED_HT) {
 451                 /* 802.11n parameters changed */
 452                 u16 mode = info->ht_operation_mode;
 453
 454                 LOCK(wl);
 455                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 456                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 457                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 458                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 459                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 460                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 461                 UNLOCK(wl);
 462         }
 463         if (changed & BSS_CHANGED_BASIC_RATES) {
 464                 struct ieee80211_supported_band *bi;
 465                 u32 br_mask, i;
 466                 u16 rate;
 467                 struct brcm_rateset rs;
 468                 int error;
 469
 470                 /* retrieve the current rates */
 471                 LOCK(wl);
 472                 brcms_c_get_current_rateset(wl->wlc, &rs);
 473                 UNLOCK(wl);
 474
 475                 br_mask = info->basic_rates;
 476                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 477                 for (i = 0; i < bi->n_bitrates; i++) {
 478                         /* convert to internal rate value */
 479                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 480
 481                         /* set/clear basic rate flag */
 482                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 483                         br_mask >>= 1;
 484                 }
 485
 486                 /* update the rate set */
 487                 LOCK(wl);
 488                 error = brcms_c_set_rateset(wl->wlc, &rs);
 489                 UNLOCK(wl);
 490                 if (error)
 491                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 492                                   error);
 493         }
 494         if (changed & BSS_CHANGED_BEACON_INT) {
 495                 /* Beacon interval changed */
 496                 LOCK(wl);
 497                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 498                 UNLOCK(wl);
 499         }
 500         if (changed & BSS_CHANGED_BSSID) {
 501                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 502                 LOCK(wl);
 503                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 504                 UNLOCK(wl);
 505         }
 506         if (changed & BSS_CHANGED_BEACON)
 507                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 508                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 509
 510         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 511                 /* Beaconing should be enabled/disabled (beaconing modes) */
 512                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 513                           info->enable_beacon ? "true" : "false");
 514         }
 515
 516         if (changed & BSS_CHANGED_CQM) {
 517                 /* Connection quality monitor config changed */
 518                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 519                           " (implement)\n", __func__, info->cqm_rssi_thold,
 520                           info->cqm_rssi_hyst);
 521         }
 522
 523         if (changed & BSS_CHANGED_IBSS) {
 524                 /* IBSS join status changed */
 525                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 526                           info->ibss_joined ? "true" : "false");
 527         }
 528
 529         if (changed & BSS_CHANGED_ARP_FILTER) {
 530                 /* Hardware ARP filter address list or state changed */
 531                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 532                           " (implement)\n", __func__, info->arp_filter_enabled ?
 533                           "true" : "false", info->arp_addr_cnt);
 534         }
 535
 536         if (changed & BSS_CHANGED_QOS) {
 537                 /*
 538                  * QoS for this association was enabled/disabled.
 539                  * Note that it is only ever disabled for station mode.
 540                  */
 541                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 542                           info->qos ? "true" : "false");
 543         }
 544         return;
 545 }
 546
 547 static void
 548 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 549                         unsigned int changed_flags,
 550                         unsigned int *total_flags, u64 multicast)
 551 {
 552         struct brcms_info *wl = hw->priv;
 553         struct wiphy *wiphy = hw->wiphy;
 554
 555         changed_flags &= MAC_FILTERS;
 556         *total_flags &= MAC_FILTERS;
 557         if (changed_flags & FIF_PROMISC_IN_BSS)
 558                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 559         if (changed_flags & FIF_ALLMULTI)
 560                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 561         if (changed_flags & FIF_FCSFAIL)
 562                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 563         if (changed_flags & FIF_PLCPFAIL)
 564                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 565         if (changed_flags & FIF_CONTROL)
 566                 wiphy_err(wiphy, "FIF_CONTROL\n");
 567         if (changed_flags & FIF_OTHER_BSS)
 568                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 569         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 570                 LOCK(wl);
 571                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 572                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 573                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 574                 } else {
 575                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 576                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 577                 }
 578                 UNLOCK(wl);
 579         }
 580         return;
 581 }
 582
 583 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 584 {
 585         struct brcms_info *wl = hw->priv;
 586         LOCK(wl);
 587         brcms_c_scan_start(wl->wlc);
 588         UNLOCK(wl);
 589         return;
 590 }
 591
 592 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 593 {
 594         struct brcms_info *wl = hw->priv;
 595         LOCK(wl);
 596         brcms_c_scan_stop(wl->wlc);
 597         UNLOCK(wl);
 598         return;
 599 }
 600
 601 static int
 602 brcms_ops_conf_tx(struct ieee80211_hw *hw, u16 queue,
 603                const struct ieee80211_tx_queue_params *params)
 604 {
 605         struct brcms_info *wl = hw->priv;
 606
 607         LOCK(wl);
 608         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 609         UNLOCK(wl);
 610
 611         return 0;
 612 }
 613
 614 static int
 615 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 616                struct ieee80211_sta *sta)
 617 {
 618         struct scb *scb;
 619
 620         int i;
 621         struct brcms_info *wl = hw->priv;
 622
 623         /* Init the scb */
 624         scb = (struct scb *)sta->drv_priv;
 625         memset(scb, 0, sizeof(struct scb));
 626         for (i = 0; i < NUMPRIO; i++)
 627                 scb->seqctl[i] = 0xFFFF;
 628         scb->seqctl_nonqos = 0xFFFF;
 629         scb->magic = SCB_MAGIC;
 630
 631         wl->pub->global_scb = scb;
 632         wl->pub->global_ampdu = &(scb->scb_ampdu);
 633         wl->pub->global_ampdu->scb = scb;
 634         wl->pub->global_ampdu->max_pdu = 16;
 635         brcmu_pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID,
 636                   AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT);
 637
 638         sta->ht_cap.ht_supported = true;
 639         sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 640         sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY;
 641         sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD |
 642             IEEE80211_HT_CAP_SGI_20 |
 643             IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT;
 644
 645         /*
 646          * minstrel_ht initiates addBA on our behalf by calling
 647          * ieee80211_start_tx_ba_session()
 648          */
 649         return 0;
 650 }
 651
 652 static int
 653 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 654                     struct ieee80211_vif *vif,
 655                     enum ieee80211_ampdu_mlme_action action,
 656                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 657                     u8 buf_size)
 658 {
 659         struct scb *scb = (struct scb *)sta->drv_priv;
 660         struct brcms_info *wl = hw->priv;
 661         int status;
 662
 663         if (WARN_ON(scb->magic != SCB_MAGIC))
 664                 return -EIDRM;
 665         switch (action) {
 666         case IEEE80211_AMPDU_RX_START:
 667                 break;
 668         case IEEE80211_AMPDU_RX_STOP:
 669                 break;
 670         case IEEE80211_AMPDU_TX_START:
 671                 LOCK(wl);
 672                 status = brcms_c_aggregatable(wl->wlc, tid);
 673                 UNLOCK(wl);
 674                 if (!status) {
 675                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 676                                   tid);
 677                         return -EINVAL;
 678                 }
 679                 /*
 680                  * Future improvement:
 681                  *   Use the starting sequence number provided ...
 682                  */
 683                 *ssn = 0;
 684                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 685                 break;
 686
 687         case IEEE80211_AMPDU_TX_STOP:
 688                 LOCK(wl);
 689                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 690                 UNLOCK(wl);
 691                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 692                 break;
 693         case IEEE80211_AMPDU_TX_OPERATIONAL:
 694                 /*
 695                  * BA window size from ADDBA response ('buf_size') defines how
 696                  * many outstanding MPDUs are allowed for the BA stream by
 697                  * recipient and traffic class. 'ampdu_factor' gives maximum
 698                  * AMPDU size.
 699                  */
 700                 LOCK(wl);
 701                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 702                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 703                          sta->ht_cap.ampdu_factor)) - 1);
 704                 UNLOCK(wl);
 705                 /* Power save wakeup */
 706                 break;
 707         default:
 708                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 709                           __func__);
 710         }
 711
 712         return 0;
 713 }
 714
 715 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 716 {
 717         struct brcms_info *wl = hw->priv;
 718         bool blocked;
 719
 720         LOCK(wl);
 721         blocked = brcms_c_check_radio_disabled(wl->wlc);
 722         UNLOCK(wl);
 723
 724         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 725 }
 726
 727 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 728 {
 729         struct brcms_info *wl = hw->priv;
 730
 731         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 732
 733         /* wait for packet queue and dma fifos to run empty */
 734         LOCK(wl);
 735         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 736         UNLOCK(wl);
 737 }
 738
 739 static const struct ieee80211_ops brcms_ops = {
 740         .tx = brcms_ops_tx,
 741         .start = brcms_ops_start,
 742         .stop = brcms_ops_stop,
 743         .add_interface = brcms_ops_add_interface,
 744         .remove_interface = brcms_ops_remove_interface,
 745         .config = brcms_ops_config,
 746         .bss_info_changed = brcms_ops_bss_info_changed,
 747         .configure_filter = brcms_ops_configure_filter,
 748         .sw_scan_start = brcms_ops_sw_scan_start,
 749         .sw_scan_complete = brcms_ops_sw_scan_complete,
 750         .conf_tx = brcms_ops_conf_tx,
 751         .sta_add = brcms_ops_sta_add,
 752         .ampdu_action = brcms_ops_ampdu_action,
 753         .rfkill_poll = brcms_ops_rfkill_poll,
 754         .flush = brcms_ops_flush,
 755 };
 756
 757 /*
 758  * is called in brcms_pci_probe() context, therefore no locking required.
 759  */
 760 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 761 {
 762         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 763 }
 764
 765 static void brcms_dpc(unsigned long data)
 766 {
 767         struct brcms_info *wl;
 768
 769         wl = (struct brcms_info *) data;
 770
 771         LOCK(wl);
 772
 773         /* call the common second level interrupt handler */
 774         if (wl->pub->up) {
 775                 if (wl->resched) {
 776                         unsigned long flags;
 777
 778                         INT_LOCK(wl, flags);
 779                         brcms_c_intrsupd(wl->wlc);
 780                         INT_UNLOCK(wl, flags);
 781                 }
 782
 783                 wl->resched = brcms_c_dpc(wl->wlc, true);
 784         }
 785
 786         /* brcms_c_dpc() may bring the driver down */
 787         if (!wl->pub->up)
 788                 goto done;
 789
 790         /* re-schedule dpc */
 791         if (wl->resched)
 792                 tasklet_schedule(&wl->tasklet);
 793         else
 794                 /* re-enable interrupts */
 795                 brcms_intrson(wl);
 796
 797  done:
 798         UNLOCK(wl);
 799 }
 800
 801 /*
 802  * Precondition: Since this function is called in brcms_pci_probe() context,
 803  * no locking is required.
 804  */
 805 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 806 {
 807         int status;
 808         struct device *device = &pdev->dev;
 809         char fw_name[100];
 810         int i;
 811
 812         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 813         for (i = 0; i < MAX_FW_IMAGES; i++) {
 814                 if (brcms_firmwares[i] == NULL)
 815                         break;
 816                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 817                         UCODE_LOADER_API_VER);
 818                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 819                 if (status) {
 820                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 821                                   KBUILD_MODNAME, fw_name);
 822                         return status;
 823                 }
 824                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 825                         UCODE_LOADER_API_VER);
 826                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 827                 if (status) {
 828                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 829                                   KBUILD_MODNAME, fw_name);
 830                         return status;
 831                 }
 832                 wl->fw.hdr_num_entries[i] =
 833                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 834         }
 835         wl->fw.fw_cnt = i;
 836         return brcms_ucode_data_init(wl, &wl->ucode);
 837 }
 838
 839 /*
 840  * Precondition: Since this function is called in brcms_pci_probe() context,
 841  * no locking is required.
 842  */
 843 static void brcms_release_fw(struct brcms_info *wl)
 844 {
 845         int i;
 846         for (i = 0; i < MAX_FW_IMAGES; i++) {
 847                 release_firmware(wl->fw.fw_bin[i]);
 848                 release_firmware(wl->fw.fw_hdr[i]);
 849         }
 850 }
 851
 852 /**
 853  * This function frees the WL per-device resources.
 854  *
 855  * This function frees resources owned by the WL device pointed to
 856  * by the wl parameter.
 857  *
 858  * precondition: can both be called locked and unlocked
 859  *
 860  */
 861 static void brcms_free(struct brcms_info *wl)
 862 {
 863         struct brcms_timer *t, *next;
 864
 865         /* free ucode data */
 866         if (wl->fw.fw_cnt)
 867                 brcms_ucode_data_free(&wl->ucode);
 868         if (wl->irq)
 869                 free_irq(wl->irq, wl);
 870
 871         /* kill dpc */
 872         tasklet_kill(&wl->tasklet);
 873
 874         if (wl->pub)
 875                 brcms_c_module_unregister(wl->pub, "linux", wl);
 876
 877         /* free common resources */
 878         if (wl->wlc) {
 879                 brcms_c_detach(wl->wlc);
 880                 wl->wlc = NULL;
 881                 wl->pub = NULL;
 882         }
 883
 884         /* virtual interface deletion is deferred so we cannot spinwait */
 885
 886         /* wait for all pending callbacks to complete */
 887         while (atomic_read(&wl->callbacks) > 0)
 888                 schedule();
 889
 890         /* free timers */
 891         for (t = wl->timers; t; t = next) {
 892                 next = t->next;
 893 #ifdef BCMDBG
 894                 kfree(t->name);
 895 #endif
 896                 kfree(t);
 897         }
 898
 899         /*
 900          * unregister_netdev() calls get_stats() which may read chip
 901          * registers so we cannot unmap the chip registers until
 902          * after calling unregister_netdev() .
 903          */
 904         if (wl->regsva)
 905                 iounmap(wl->regsva);
 906
 907         wl->regsva = NULL;
 908 }
 909
 910 /*
 911 * called from both kernel as from this kernel module.
 912 * precondition: perimeter lock is not acquired.
 913 */
 914 static void brcms_remove(struct pci_dev *pdev)
 915 {
 916         struct brcms_info *wl;
 917         struct ieee80211_hw *hw;
 918         int status;
 919
 920         hw = pci_get_drvdata(pdev);
 921         wl = hw->priv;
 922         if (!wl) {
 923                 pr_err("wl: brcms_remove: pci_get_drvdata failed\n");
 924                 return;
 925         }
 926
 927         LOCK(wl);
 928         status = brcms_c_chipmatch(pdev->vendor, pdev->device);
 929         UNLOCK(wl);
 930         if (!status) {
 931                 wiphy_err(wl->wiphy, "wl: brcms_remove: chipmatch "
 932                                      "failed\n");
 933                 return;
 934         }
 935         if (wl->wlc) {
 936                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 937                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 938                 ieee80211_unregister_hw(hw);
 939                 LOCK(wl);
 940                 brcms_down(wl);
 941                 UNLOCK(wl);
 942         }
 943         pci_disable_device(pdev);
 944
 945         brcms_free(wl);
 946
 947         pci_set_drvdata(pdev, NULL);
 948         ieee80211_free_hw(hw);
 949 }
 950
 951 static irqreturn_t brcms_isr(int irq, void *dev_id)
 952 {
 953         struct brcms_info *wl;
 954         bool ours, wantdpc;
 955         unsigned long flags;
 956
 957         wl = (struct brcms_info *) dev_id;
 958
 959         ISR_LOCK(wl, flags);
 960
 961         /* call common first level interrupt handler */
 962         ours = brcms_c_isr(wl->wlc, &wantdpc);
 963         if (ours) {
 964                 /* if more to do... */
 965                 if (wantdpc) {
 966
 967                         /* ...and call the second level interrupt handler */
 968                         /* schedule dpc */
 969                         tasklet_schedule(&wl->tasklet);
 970                 }
 971         }
 972
 973         ISR_UNLOCK(wl, flags);
 974
 975         return IRQ_RETVAL(ours);
 976 }
 977
 978 /*
 979  * is called in brcms_pci_probe() context, therefore no locking required.
 980  */
 981 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 982 {
 983         struct brcms_info *wl = hw->priv;
 984         int has_5g;
 985         u16 phy_type;
 986
 987         has_5g = 0;
 988
 989         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 990         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 991
 992         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 993         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 994                 if (phy_type == PHY_TYPE_LCN) {
 995                         /* Single stream */
 996                         brcms_band_2GHz_nphy.ht_cap.mcs.rx_mask[1] = 0;
 997                         brcms_band_2GHz_nphy.ht_cap.mcs.rx_highest = 72;
 998                 }
 999                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &brcms_band_2GHz_nphy;
1000         } else {
1001                 return -EPERM;
1002         }
1003
1004         /* Assume all bands use the same phy.  True for 11n devices. */
1005         if (wl->pub->_nbands > 1) {
1006                 has_5g++;
1007                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN)
1008                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1009                             &brcms_band_5GHz_nphy;
1010                 else
1011                         return -EPERM;
1012         }
1013         return 0;
1014 }
1015
1016 /*
1017  * is called in brcms_pci_probe() context, therefore no locking required.
1018  */
1019 static int ieee_hw_init(struct ieee80211_hw *hw)
1020 {
1021         hw->flags = IEEE80211_HW_SIGNAL_DBM
1022             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1023             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1024             | IEEE80211_HW_AMPDU_AGGREGATION;
1025
1026         hw->extra_tx_headroom = brcms_c_get_header_len();
1027         hw->queues = N_TX_QUEUES;
1028         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1029
1030         /* channel change time is dependent on chip and band  */
1031         hw->channel_change_time = 7 * 1000;
1032         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1033
1034         hw->rate_control_algorithm = "minstrel_ht";
1035
1036         hw->sta_data_size = sizeof(struct scb);
1037         return ieee_hw_rate_init(hw);
1038 }
1039
1040 /**
1041  * attach to the WL device.
1042  *
1043  * Attach to the WL device identified by vendor and device parameters.
1044  * regs is a host accessible memory address pointing to WL device registers.
1045  *
1046  * brcms_attach is not defined as static because in the case where no bus
1047  * is defined, wl_attach will never be called, and thus, gcc will issue
1048  * a warning that this function is defined but not used if we declare
1049  * it as static.
1050  *
1051  *
1052  * is called in brcms_pci_probe() context, therefore no locking required.
1053  */
1054 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1055                                        resource_size_t regs,
1056                                        struct pci_dev *btparam, uint irq)
1057 {
1058         struct brcms_info *wl = NULL;
1059         int unit, err;
1060         struct ieee80211_hw *hw;
1061         u8 perm[ETH_ALEN];
1062
1063         unit = n_adapters_found;
1064         err = 0;
1065
1066         if (unit < 0)
1067                 return NULL;
1068
1069         /* allocate private info */
1070         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
1071         if (hw != NULL)
1072                 wl = hw->priv;
1073         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1074                 return NULL;
1075         wl->wiphy = hw->wiphy;
1076
1077         atomic_set(&wl->callbacks, 0);
1078
1079         /* setup the bottom half handler */
1080         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1081
1082         wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1083         if (wl->regsva == NULL) {
1084                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1085                 goto fail;
1086         }
1087         spin_lock_init(&wl->lock);
1088         spin_lock_init(&wl->isr_lock);
1089
1090         /* prepare ucode */
1091         if (brcms_request_fw(wl, btparam) < 0) {
1092                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1093                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1094                 brcms_release_fw(wl);
1095                 brcms_remove(btparam);
1096                 return NULL;
1097         }
1098
1099         /* common load-time initialization */
1100         wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1101                                  wl->regsva, btparam, &err);
1102         brcms_release_fw(wl);
1103         if (!wl->wlc) {
1104                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1105                           KBUILD_MODNAME, err);
1106                 goto fail;
1107         }
1108         wl->pub = brcms_c_pub(wl->wlc);
1109
1110         wl->pub->ieee_hw = hw;
1111
1112         /* disable mpc */
1113         brcms_c_set_radio_mpc(wl->wlc, false);
1114
1115         /* register our interrupt handler */
1116         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1117                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1118                 goto fail;
1119         }
1120         wl->irq = irq;
1121
1122         /* register module */
1123         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1124
1125         if (ieee_hw_init(hw)) {
1126                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1127                           __func__);
1128                 goto fail;
1129         }
1130
1131         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1132         if (WARN_ON(!is_valid_ether_addr(perm)))
1133                 goto fail;
1134         SET_IEEE80211_PERM_ADDR(hw, perm);
1135
1136         err = ieee80211_register_hw(hw);
1137         if (err)
1138                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1139                           "%d\n", __func__, err);
1140
1141         if (wl->pub->srom_ccode[0])
1142                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1143         else
1144                 err = brcms_set_hint(wl, "US");
1145         if (err)
1146                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1147                           __func__, err);
1148
1149         n_adapters_found++;
1150         return wl;
1151
1152 fail:
1153         brcms_free(wl);
1154         return NULL;
1155 }
1156
1157
1158
1159 /**
1160  * determines if a device is a WL device, and if so, attaches it.
1161  *
1162  * This function determines if a device pointed to by pdev is a WL device,
1163  * and if so, performs a brcms_attach() on it.
1164  *
1165  * Perimeter lock is initialized in the course of this function.
1166  */
1167 static int __devinit
1168 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1169 {
1170         int rc;
1171         struct brcms_info *wl;
1172         struct ieee80211_hw *hw;
1173         u32 val;
1174
1175         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1176                pdev->bus->number, PCI_SLOT(pdev->devfn),
1177                PCI_FUNC(pdev->devfn), pdev->irq);
1178
1179         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1180             ((pdev->device != 0x0576) &&
1181              ((pdev->device & 0xff00) != 0x4300) &&
1182              ((pdev->device & 0xff00) != 0x4700) &&
1183              ((pdev->device < 43000) || (pdev->device > 43999))))
1184                 return -ENODEV;
1185
1186         rc = pci_enable_device(pdev);
1187         if (rc) {
1188                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1189                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1190                        PCI_FUNC(pdev->devfn));
1191                 return -ENODEV;
1192         }
1193         pci_set_master(pdev);
1194
1195         pci_read_config_dword(pdev, 0x40, &val);
1196         if ((val & 0x0000ff00) != 0)
1197                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1198
1199         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1200         if (!hw) {
1201                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1202                 return -ENOMEM;
1203         }
1204
1205         SET_IEEE80211_DEV(hw, &pdev->dev);
1206
1207         pci_set_drvdata(pdev, hw);
1208
1209         memset(hw->priv, 0, sizeof(*wl));
1210
1211         wl = brcms_attach(pdev->vendor, pdev->device,
1212                           pci_resource_start(pdev, 0), pdev,
1213                           pdev->irq);
1214
1215         if (!wl) {
1216                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1217                        __func__);
1218                 return -ENODEV;
1219         }
1220         return 0;
1221 }
1222
1223 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1224 {
1225         struct brcms_info *wl;
1226         struct ieee80211_hw *hw;
1227
1228         hw = pci_get_drvdata(pdev);
1229         wl = hw->priv;
1230         if (!wl) {
1231                 wiphy_err(wl->wiphy,
1232                           "brcms_suspend: pci_get_drvdata failed\n");
1233                 return -ENODEV;
1234         }
1235
1236         /* only need to flag hw is down for proper resume */
1237         LOCK(wl);
1238         wl->pub->hw_up = false;
1239         UNLOCK(wl);
1240
1241         pci_save_state(pdev);
1242         pci_disable_device(pdev);
1243         return pci_set_power_state(pdev, PCI_D3hot);
1244 }
1245
1246 static int brcms_resume(struct pci_dev *pdev)
1247 {
1248         struct brcms_info *wl;
1249         struct ieee80211_hw *hw;
1250         int err = 0;
1251         u32 val;
1252
1253         hw = pci_get_drvdata(pdev);
1254         wl = hw->priv;
1255         if (!wl) {
1256                 wiphy_err(wl->wiphy,
1257                           "wl: brcms_resume: pci_get_drvdata failed\n");
1258                 return -ENODEV;
1259         }
1260
1261         err = pci_set_power_state(pdev, PCI_D0);
1262         if (err)
1263                 return err;
1264
1265         pci_restore_state(pdev);
1266
1267         err = pci_enable_device(pdev);
1268         if (err)
1269                 return err;
1270
1271         pci_set_master(pdev);
1272
1273         pci_read_config_dword(pdev, 0x40, &val);
1274         if ((val & 0x0000ff00) != 0)
1275                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1276
1277         /*
1278         *  done. driver will be put in up state
1279         *  in brcms_ops_add_interface() call.
1280         */
1281         return err;
1282 }
1283
1284 static struct pci_driver brcms_pci_driver = {
1285         .name     = KBUILD_MODNAME,
1286         .probe    = brcms_pci_probe,
1287         .suspend  = brcms_suspend,
1288         .resume   = brcms_resume,
1289         .remove   = __devexit_p(brcms_remove),
1290         .id_table = brcms_pci_id_table,
1291 };
1292
1293 /**
1294  * This is the main entry point for the WL driver.
1295  *
1296  * This function determines if a device pointed to by pdev is a WL device,
1297  * and if so, performs a brcms_attach() on it.
1298  *
1299  */
1300 static int __init brcms_module_init(void)
1301 {
1302         int error = -ENODEV;
1303
1304 #ifdef BCMDBG
1305         if (msglevel != 0xdeadbeef)
1306                 brcm_msg_level = msglevel;
1307 #endif                          /* BCMDBG */
1308
1309         error = pci_register_driver(&brcms_pci_driver);
1310         if (!error)
1311                 return 0;
1312
1313
1314
1315         return error;
1316 }
1317
1318 /**
1319  * This function unloads the WL driver from the system.
1320  *
1321  * This function unconditionally unloads the WL driver module from the
1322  * system.
1323  *
1324  */
1325 static void __exit brcms_module_exit(void)
1326 {
1327         pci_unregister_driver(&brcms_pci_driver);
1328
1329 }
1330
1331 module_init(brcms_module_init);
1332 module_exit(brcms_module_exit);
1333
1334 /*
1335  * precondition: perimeter lock has been acquired
1336  */
1337 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1338                          bool state, int prio)
1339 {
1340         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1341 }
1342
1343 /*
1344  * precondition: perimeter lock has been acquired
1345  */
1346 void brcms_init(struct brcms_info *wl)
1347 {
1348         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1349         brcms_reset(wl);
1350
1351         brcms_c_init(wl->wlc);
1352 }
1353
1354 /*
1355  * precondition: perimeter lock has been acquired
1356  */
1357 uint brcms_reset(struct brcms_info *wl)
1358 {
1359         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1360         brcms_c_reset(wl->wlc);
1361
1362         /* dpc will not be rescheduled */
1363         wl->resched = 0;
1364
1365         return 0;
1366 }
1367
1368 /*
1369  * These are interrupt on/off entry points. Disable interrupts
1370  * during interrupt state transition.
1371  */
1372 void brcms_intrson(struct brcms_info *wl)
1373 {
1374         unsigned long flags;
1375
1376         INT_LOCK(wl, flags);
1377         brcms_c_intrson(wl->wlc);
1378         INT_UNLOCK(wl, flags);
1379 }
1380
1381 u32 brcms_intrsoff(struct brcms_info *wl)
1382 {
1383         unsigned long flags;
1384         u32 status;
1385
1386         INT_LOCK(wl, flags);
1387         status = brcms_c_intrsoff(wl->wlc);
1388         INT_UNLOCK(wl, flags);
1389         return status;
1390 }
1391
1392 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1393 {
1394         unsigned long flags;
1395
1396         INT_LOCK(wl, flags);
1397         brcms_c_intrsrestore(wl->wlc, macintmask);
1398         INT_UNLOCK(wl, flags);
1399 }
1400
1401 /*
1402  * precondition: perimeter lock has been acquired
1403  */
1404 int brcms_up(struct brcms_info *wl)
1405 {
1406         int error = 0;
1407
1408         if (wl->pub->up)
1409                 return 0;
1410
1411         error = brcms_c_up(wl->wlc);
1412
1413         return error;
1414 }
1415
1416 /*
1417  * precondition: perimeter lock has been acquired
1418  */
1419 void brcms_down(struct brcms_info *wl)
1420 {
1421         uint callbacks, ret_val = 0;
1422
1423         /* call common down function */
1424         ret_val = brcms_c_down(wl->wlc);
1425         callbacks = atomic_read(&wl->callbacks) - ret_val;
1426
1427         /* wait for down callbacks to complete */
1428         UNLOCK(wl);
1429
1430         /* For HIGH_only driver, it's important to actually schedule other work,
1431          * not just spin wait since everything runs at schedule level
1432          */
1433         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1434
1435         LOCK(wl);
1436 }
1437
1438 /*
1439 * precondition: perimeter lock is not acquired
1440  */
1441 static void _brcms_timer(struct brcms_timer *t)
1442 {
1443         LOCK(t->wl);
1444
1445         if (t->set) {
1446                 if (t->periodic) {
1447                         t->timer.expires = jiffies + t->ms * HZ / 1000;
1448                         atomic_inc(&t->wl->callbacks);
1449                         add_timer(&t->timer);
1450                         t->set = true;
1451                 } else
1452                         t->set = false;
1453
1454                 t->fn(t->arg);
1455         }
1456
1457         atomic_dec(&t->wl->callbacks);
1458
1459         UNLOCK(t->wl);
1460 }
1461
1462 /*
1463  * is called by the kernel from software irq context
1464  */
1465 static void brcms_timer(unsigned long data)
1466 {
1467         _brcms_timer((struct brcms_timer *) data);
1468 }
1469
1470 /*
1471  * Adds a timer to the list. Caller supplies a timer function.
1472  * Is called from wlc.
1473  *
1474  * precondition: perimeter lock has been acquired
1475  */
1476 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1477                                      void (*fn) (void *arg),
1478                                      void *arg, const char *name)
1479 {
1480         struct brcms_timer *t;
1481
1482         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1483         if (!t)
1484                 return NULL;
1485
1486         init_timer(&t->timer);
1487         t->timer.data = (unsigned long) t;
1488         t->timer.function = brcms_timer;
1489         t->wl = wl;
1490         t->fn = fn;
1491         t->arg = arg;
1492         t->next = wl->timers;
1493         wl->timers = t;
1494
1495 #ifdef BCMDBG
1496         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1497         if (t->name)
1498                 strcpy(t->name, name);
1499 #endif
1500
1501         return t;
1502 }
1503
1504 /*
1505  * adds only the kernel timer since it's going to be more accurate
1506  * as well as it's easier to make it periodic
1507  *
1508  * precondition: perimeter lock has been acquired
1509  */
1510 void brcms_add_timer(struct brcms_info *wl, struct brcms_timer *t, uint ms,
1511                      int periodic)
1512 {
1513 #ifdef BCMDBG
1514         if (t->set)
1515                 wiphy_err(wl->wiphy, "%s: Already set. Name: %s, per %d\n",
1516                           __func__, t->name, periodic);
1517
1518 #endif
1519         t->ms = ms;
1520         t->periodic = (bool) periodic;
1521         t->set = true;
1522         t->timer.expires = jiffies + ms * HZ / 1000;
1523
1524         atomic_inc(&wl->callbacks);
1525         add_timer(&t->timer);
1526 }
1527
1528 /*
1529  * return true if timer successfully deleted, false if still pending
1530  *
1531  * precondition: perimeter lock has been acquired
1532  */
1533 bool brcms_del_timer(struct brcms_info *wl, struct brcms_timer *t)
1534 {
1535         if (t->set) {
1536                 t->set = false;
1537                 if (!del_timer(&t->timer))
1538                         return false;
1539
1540                 atomic_dec(&wl->callbacks);
1541         }
1542
1543         return true;
1544 }
1545
1546 /*
1547  * precondition: perimeter lock has been acquired
1548  */
1549 void brcms_free_timer(struct brcms_info *wl, struct brcms_timer *t)
1550 {
1551         struct brcms_timer *tmp;
1552
1553         /* delete the timer in case it is active */
1554         brcms_del_timer(wl, t);
1555
1556         if (wl->timers == t) {
1557                 wl->timers = wl->timers->next;
1558 #ifdef BCMDBG
1559                 kfree(t->name);
1560 #endif
1561                 kfree(t);
1562                 return;
1563
1564         }
1565
1566         tmp = wl->timers;
1567         while (tmp) {
1568                 if (tmp->next == t) {
1569                         tmp->next = t->next;
1570 #ifdef BCMDBG
1571                         kfree(t->name);
1572 #endif
1573                         kfree(t);
1574                         return;
1575                 }
1576                 tmp = tmp->next;
1577         }
1578
1579 }
1580
1581 /*
1582  * precondition: perimeter lock has been acquired
1583  */
1584 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1585 {
1586         int i, entry;
1587         const u8 *pdata;
1588         struct firmware_hdr *hdr;
1589         for (i = 0; i < wl->fw.fw_cnt; i++) {
1590                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1591                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1592                      entry++, hdr++) {
1593                         u32 len = le32_to_cpu(hdr->len);
1594                         if (le32_to_cpu(hdr->idx) == idx) {
1595                                 pdata = wl->fw.fw_bin[i]->data +
1596                                         le32_to_cpu(hdr->offset);
1597                                 *pbuf = kmalloc(len, GFP_ATOMIC);
1598                                 if (*pbuf == NULL)
1599                                         goto fail;
1600
1601                                 memcpy(*pbuf, pdata, len);
1602                                 return 0;
1603                         }
1604                 }
1605         }
1606         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1607                   idx);
1608         *pbuf = NULL;
1609 fail:
1610         return -ENODATA;
1611 }
1612
1613 /*
1614  * Precondition: Since this function is called in brcms_pci_probe() context,
1615  * no locking is required.
1616  */
1617 int brcms_ucode_init_uint(struct brcms_info *wl, u32 *data, u32 idx)
1618 {
1619         int i, entry;
1620         const u8 *pdata;
1621         struct firmware_hdr *hdr;
1622         for (i = 0; i < wl->fw.fw_cnt; i++) {
1623                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1624                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1625                      entry++, hdr++) {
1626                         if (le32_to_cpu(hdr->idx) == idx) {
1627                                 pdata = wl->fw.fw_bin[i]->data +
1628                                         le32_to_cpu(hdr->offset);
1629                                 if (le32_to_cpu(hdr->len) != 4) {
1630                                         wiphy_err(wl->wiphy,
1631                                                   "ERROR: fw hdr len\n");
1632                                         return -ENOMSG;
1633                                 }
1634                                 *data = le32_to_cpu(*((u32 *) pdata));
1635                                 return 0;
1636                         }
1637                 }
1638         }
1639         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1640         return -ENOMSG;
1641 }
1642
1643 /*
1644  * precondition: can both be called locked and unlocked
1645  */
1646 void brcms_ucode_free_buf(void *p)
1647 {
1648         kfree(p);
1649 }
1650
1651 /*
1652  * checks validity of all firmware images loaded from user space
1653  *
1654  * Precondition: Since this function is called in brcms_pci_probe() context,
1655  * no locking is required.
1656  */
1657 int brcms_check_firmwares(struct brcms_info *wl)
1658 {
1659         int i;
1660         int entry;
1661         int rc = 0;
1662         const struct firmware *fw;
1663         const struct firmware *fw_hdr;
1664         struct firmware_hdr *ucode_hdr;
1665         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1666                 fw =  wl->fw.fw_bin[i];
1667                 fw_hdr = wl->fw.fw_hdr[i];
1668                 if (fw == NULL && fw_hdr == NULL) {
1669                         break;
1670                 } else if (fw == NULL || fw_hdr == NULL) {
1671                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1672                                   __func__);
1673                         rc = -EBADF;
1674                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1675                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1676                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1677                                 sizeof(struct firmware_hdr));
1678                         rc = -EBADF;
1679                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1680                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1681                                   "%zu\n", __func__, fw->size);
1682                         rc = -EBADF;
1683                 } else {
1684                         /* check if ucode section overruns firmware image */
1685                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1686                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1687                              !rc; entry++, ucode_hdr++) {
1688                                 if (le32_to_cpu(ucode_hdr->offset) +
1689                                     le32_to_cpu(ucode_hdr->len) >
1690                                     fw->size) {
1691                                         wiphy_err(wl->wiphy,
1692                                                   "%s: conflicting bin/hdr\n",
1693                                                   __func__);
1694                                         rc = -EBADF;
1695                                 }
1696                         }
1697                 }
1698         }
1699         if (rc == 0 && wl->fw.fw_cnt != i) {
1700                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1701                         wl->fw.fw_cnt);
1702                 rc = -EBADF;
1703         }
1704         return rc;
1705 }
1706
1707 /*
1708  * precondition: perimeter lock has been acquired
1709  */
1710 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1711 {
1712         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1713
1714         UNLOCK(wl);
1715         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1716         if (blocked)
1717                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1718         LOCK(wl);
1719         return blocked;
1720 }
1721
1722 /*
1723  * precondition: perimeter lock has been acquired
1724  */
1725 void brcms_msleep(struct brcms_info *wl, uint ms)
1726 {
1727         UNLOCK(wl);
1728         msleep(ms);
1729         LOCK(wl);
1730 }