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 static void brcms_timer(unsigned long data);
  58 static void _brcms_timer(struct brcms_timer *t);
  59
  60
  61 static int ieee_hw_init(struct ieee80211_hw *hw);
  62 static int ieee_hw_rate_init(struct ieee80211_hw *hw);
  63
  64 static int wl_linux_watchdog(void *ctx);
  65
  66 /* Flags we support */
  67 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  68         FIF_ALLMULTI | \
  69         FIF_FCSFAIL | \
  70         FIF_PLCPFAIL | \
  71         FIF_CONTROL | \
  72         FIF_OTHER_BSS | \
  73         FIF_BCN_PRBRESP_PROMISC)
  74
  75 static int n_adapters_found;
  76
  77 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev);
  78 static void brcms_release_fw(struct brcms_info *wl);
  79
  80 /* local prototypes */
  81 static void brcms_dpc(unsigned long data);
  82 static irqreturn_t brcms_isr(int irq, void *dev_id);
  83
  84 static int __devinit brcms_pci_probe(struct pci_dev *pdev,
  85                                   const struct pci_device_id *ent);
  86 static void brcms_remove(struct pci_dev *pdev);
  87 static void brcms_free(struct brcms_info *wl);
  88 static void brcms_set_basic_rate(struct wl_rateset *rs, u16 rate, bool is_br);
  89
  90 MODULE_AUTHOR("Broadcom Corporation");
  91 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  92 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  93 MODULE_LICENSE("Dual BSD/GPL");
  94
  95 /* recognized PCI IDs */
  96 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
  97         {PCI_VENDOR_ID_BROADCOM, 0x4357, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 43225 2G */
  98         {PCI_VENDOR_ID_BROADCOM, 0x4353, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 43224 DUAL */
  99         {PCI_VENDOR_ID_BROADCOM, 0x4727, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 4313 DUAL */
 100         /* 43224 Ven */
 101         {PCI_VENDOR_ID_BROADCOM, 0x0576, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 102         {0}
 103 };
 104
 105 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
 106
 107 #ifdef BCMDBG
 108 static int msglevel = 0xdeadbeef;
 109 module_param(msglevel, int, 0);
 110 static int phymsglevel = 0xdeadbeef;
 111 module_param(phymsglevel, int, 0);
 112 #endif                          /* BCMDBG */
 113
 114 #define HW_TO_WL(hw)     (hw->priv)
 115 #define WL_TO_HW(wl)      (wl->pub->ieee_hw)
 116
 117 /* MAC80211 callback functions */
 118 static int brcms_ops_start(struct ieee80211_hw *hw);
 119 static void brcms_ops_stop(struct ieee80211_hw *hw);
 120 static int brcms_ops_add_interface(struct ieee80211_hw *hw,
 121                                 struct ieee80211_vif *vif);
 122 static void brcms_ops_remove_interface(struct ieee80211_hw *hw,
 123                                     struct ieee80211_vif *vif);
 124 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed);
 125 static void brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 126                                     struct ieee80211_vif *vif,
 127                                     struct ieee80211_bss_conf *info,
 128                                     u32 changed);
 129 static void brcms_ops_configure_filter(struct ieee80211_hw *hw,
 130                                     unsigned int changed_flags,
 131                                     unsigned int *total_flags, u64 multicast);
 132 static int brcms_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
 133                           bool set);
 134 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw);
 135 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw);
 136 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf);
 137 static int brcms_ops_get_stats(struct ieee80211_hw *hw,
 138                             struct ieee80211_low_level_stats *stats);
 139 static void brcms_ops_sta_notify(struct ieee80211_hw *hw,
 140                               struct ieee80211_vif *vif,
 141                               enum sta_notify_cmd cmd,
 142                               struct ieee80211_sta *sta);
 143 static int brcms_ops_conf_tx(struct ieee80211_hw *hw, u16 queue,
 144                           const struct ieee80211_tx_queue_params *params);
 145 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw);
 146 static int brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 147                       struct ieee80211_sta *sta);
 148 static int brcms_ops_sta_remove(struct ieee80211_hw *hw,
 149                                 struct ieee80211_vif *vif,
 150                                 struct ieee80211_sta *sta);
 151 static int brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 152                                struct ieee80211_vif *vif,
 153                                enum ieee80211_ampdu_mlme_action action,
 154                                struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 155                                u8 buf_size);
 156 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw);
 157 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop);
 158
 159 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 160 {
 161         struct brcms_info *wl = hw->priv;
 162
 163         LOCK(wl);
 164         if (!wl->pub->up) {
 165                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 166                 kfree_skb(skb);
 167                 goto done;
 168         }
 169         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 170  done:
 171         UNLOCK(wl);
 172 }
 173
 174 static int brcms_ops_start(struct ieee80211_hw *hw)
 175 {
 176         struct brcms_info *wl = hw->priv;
 177         bool blocked;
 178         /*
 179           struct ieee80211_channel *curchan = hw->conf.channel;
 180         */
 181
 182         ieee80211_wake_queues(hw);
 183         LOCK(wl);
 184         blocked = brcms_rfkill_set_hw_state(wl);
 185         UNLOCK(wl);
 186         if (!blocked)
 187                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 188
 189         return 0;
 190 }
 191
 192 static void brcms_ops_stop(struct ieee80211_hw *hw)
 193 {
 194         ieee80211_stop_queues(hw);
 195 }
 196
 197 static int
 198 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 199 {
 200         struct brcms_info *wl;
 201         int err;
 202
 203         /* Just STA for now */
 204         if (vif->type != NL80211_IFTYPE_AP &&
 205             vif->type != NL80211_IFTYPE_MESH_POINT &&
 206             vif->type != NL80211_IFTYPE_STATION &&
 207             vif->type != NL80211_IFTYPE_WDS &&
 208             vif->type != NL80211_IFTYPE_ADHOC) {
 209                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 210                           " STA for now\n", __func__, vif->type);
 211                 return -EOPNOTSUPP;
 212         }
 213
 214         wl = HW_TO_WL(hw);
 215         LOCK(wl);
 216         err = brcms_up(wl);
 217         UNLOCK(wl);
 218
 219         if (err != 0) {
 220                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 221                           err);
 222         }
 223         return err;
 224 }
 225
 226 static void
 227 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 228 {
 229         struct brcms_info *wl;
 230
 231         wl = HW_TO_WL(hw);
 232
 233         /* put driver in down state */
 234         LOCK(wl);
 235         brcms_down(wl);
 236         UNLOCK(wl);
 237 }
 238
 239 /*
 240  * precondition: perimeter lock has been acquired
 241  */
 242 static int
 243 ieee_set_channel(struct ieee80211_hw *hw, struct ieee80211_channel *chan,
 244                  enum nl80211_channel_type type)
 245 {
 246         struct brcms_info *wl = HW_TO_WL(hw);
 247         int err = 0;
 248
 249         switch (type) {
 250         case NL80211_CHAN_HT20:
 251         case NL80211_CHAN_NO_HT:
 252                 err = brcms_c_set(wl->wlc, BRCM_SET_CHANNEL, chan->hw_value);
 253                 break;
 254         case NL80211_CHAN_HT40MINUS:
 255         case NL80211_CHAN_HT40PLUS:
 256                 wiphy_err(hw->wiphy,
 257                           "%s: Need to implement 40 Mhz Channels!\n", __func__);
 258                 err = 1;
 259                 break;
 260         }
 261
 262         if (err)
 263                 return -EIO;
 264         return err;
 265 }
 266
 267 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 268 {
 269         struct ieee80211_conf *conf = &hw->conf;
 270         struct brcms_info *wl = HW_TO_WL(hw);
 271         int err = 0;
 272         int new_int;
 273         struct wiphy *wiphy = hw->wiphy;
 274
 275         LOCK(wl);
 276         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 277                 if (brcms_c_set_par(wl->wlc, IOV_BCN_LI_BCN,
 278                                     conf->listen_interval) < 0) {
 279                         wiphy_err(wiphy, "%s: Error setting listen_interval\n",
 280                                   __func__);
 281                         err = -EIO;
 282                         goto config_out;
 283                 }
 284                 brcms_c_get_par(wl->wlc, IOV_BCN_LI_BCN, &new_int);
 285         }
 286         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 287                 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
 288                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 289                           "true" : "false");
 290         if (changed & IEEE80211_CONF_CHANGE_PS)
 291                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 292                           __func__, conf->flags & IEEE80211_CONF_PS ?
 293                           "true" : "false");
 294
 295         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 296                 if (brcms_c_set_par(wl->wlc, IOV_QTXPOWER,
 297                                     conf->power_level * 4) < 0) {
 298                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 299                                   __func__);
 300                         err = -EIO;
 301                         goto config_out;
 302                 }
 303                 brcms_c_get_par(wl->wlc, IOV_QTXPOWER, &new_int);
 304                 if (new_int != (conf->power_level * 4))
 305                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 306                                   "\n", __func__, conf->power_level * 4,
 307                                   new_int);
 308         }
 309         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 310                 err = ieee_set_channel(hw, conf->channel, conf->channel_type);
 311         }
 312         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 313                 if (brcms_c_set
 314                     (wl->wlc, BRCM_SET_SRL,
 315                      conf->short_frame_max_tx_count) < 0) {
 316                         wiphy_err(wiphy, "%s: Error setting srl\n", __func__);
 317                         err = -EIO;
 318                         goto config_out;
 319                 }
 320                 if (brcms_c_set(wl->wlc, BRCM_SET_LRL,
 321                                 conf->long_frame_max_tx_count) < 0) {
 322                         wiphy_err(wiphy, "%s: Error setting lrl\n", __func__);
 323                         err = -EIO;
 324                         goto config_out;
 325                 }
 326         }
 327
 328  config_out:
 329         UNLOCK(wl);
 330         return err;
 331 }
 332
 333 static void
 334 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 335                         struct ieee80211_vif *vif,
 336                         struct ieee80211_bss_conf *info, u32 changed)
 337 {
 338         struct brcms_info *wl = HW_TO_WL(hw);
 339         struct wiphy *wiphy = hw->wiphy;
 340         int val;
 341
 342         if (changed & BSS_CHANGED_ASSOC) {
 343                 /* association status changed (associated/disassociated)
 344                  * also implies a change in the AID.
 345                  */
 346                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 347                           __func__, info->assoc ? "" : "dis");
 348                 LOCK(wl);
 349                 brcms_c_associate_upd(wl->wlc, info->assoc);
 350                 UNLOCK(wl);
 351         }
 352         if (changed & BSS_CHANGED_ERP_SLOT) {
 353                 /* slot timing changed */
 354                 if (info->use_short_slot)
 355                         val = 1;
 356                 else
 357                         val = 0;
 358                 LOCK(wl);
 359                 brcms_c_set(wl->wlc, BRCMS_SET_SHORTSLOT_OVERRIDE, val);
 360                 UNLOCK(wl);
 361         }
 362
 363         if (changed & BSS_CHANGED_HT) {
 364                 /* 802.11n parameters changed */
 365                 u16 mode = info->ht_operation_mode;
 366
 367                 LOCK(wl);
 368                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 369                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 370                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 371                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 372                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 373                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 374                 UNLOCK(wl);
 375         }
 376         if (changed & BSS_CHANGED_BASIC_RATES) {
 377                 struct ieee80211_supported_band *bi;
 378                 u32 br_mask, i;
 379                 u16 rate;
 380                 struct wl_rateset rs;
 381                 int error;
 382
 383                 /* retrieve the current rates */
 384                 LOCK(wl);
 385                 error = brcms_c_ioctl(wl->wlc, BRCM_GET_CURR_RATESET,
 386                                   &rs, sizeof(rs), NULL);
 387                 UNLOCK(wl);
 388                 if (error) {
 389                         wiphy_err(wiphy, "%s: retrieve rateset failed: %d\n",
 390                                   __func__, error);
 391                         return;
 392                 }
 393                 br_mask = info->basic_rates;
 394                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 395                 for (i = 0; i < bi->n_bitrates; i++) {
 396                         /* convert to internal rate value */
 397                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 398
 399                         /* set/clear basic rate flag */
 400                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 401                         br_mask >>= 1;
 402                 }
 403
 404                 /* update the rate set */
 405                 LOCK(wl);
 406                 brcms_c_ioctl(wl->wlc, BRCM_SET_RATESET, &rs, sizeof(rs), NULL);
 407                 UNLOCK(wl);
 408         }
 409         if (changed & BSS_CHANGED_BEACON_INT) {
 410                 /* Beacon interval changed */
 411                 LOCK(wl);
 412                 brcms_c_set(wl->wlc, BRCM_SET_BCNPRD, info->beacon_int);
 413                 UNLOCK(wl);
 414         }
 415         if (changed & BSS_CHANGED_BSSID) {
 416                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 417                 LOCK(wl);
 418                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET,
 419                                   info->bssid);
 420                 UNLOCK(wl);
 421         }
 422         if (changed & BSS_CHANGED_BEACON) {
 423                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 424                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 425         }
 426         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 427                 /* Beaconing should be enabled/disabled (beaconing modes) */
 428                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 429                           info->enable_beacon ? "true" : "false");
 430         }
 431         if (changed & BSS_CHANGED_CQM) {
 432                 /* Connection quality monitor config changed */
 433                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 434                           " (implement)\n", __func__, info->cqm_rssi_thold,
 435                           info->cqm_rssi_hyst);
 436         }
 437         if (changed & BSS_CHANGED_IBSS) {
 438                 /* IBSS join status changed */
 439                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 440                           info->ibss_joined ? "true" : "false");
 441         }
 442         if (changed & BSS_CHANGED_ARP_FILTER) {
 443                 /* Hardware ARP filter address list or state changed */
 444                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 445                           " (implement)\n", __func__, info->arp_filter_enabled ?
 446                           "true" : "false", info->arp_addr_cnt);
 447         }
 448         if (changed & BSS_CHANGED_QOS) {
 449                 /*
 450                  * QoS for this association was enabled/disabled.
 451                  * Note that it is only ever disabled for station mode.
 452                  */
 453                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 454                           info->qos ? "true" : "false");
 455         }
 456         return;
 457 }
 458
 459 static void
 460 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 461                         unsigned int changed_flags,
 462                         unsigned int *total_flags, u64 multicast)
 463 {
 464         struct brcms_info *wl = hw->priv;
 465         struct wiphy *wiphy = hw->wiphy;
 466
 467         changed_flags &= MAC_FILTERS;
 468         *total_flags &= MAC_FILTERS;
 469         if (changed_flags & FIF_PROMISC_IN_BSS)
 470                 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
 471         if (changed_flags & FIF_ALLMULTI)
 472                 wiphy_err(wiphy, "FIF_ALLMULTI\n");
 473         if (changed_flags & FIF_FCSFAIL)
 474                 wiphy_err(wiphy, "FIF_FCSFAIL\n");
 475         if (changed_flags & FIF_PLCPFAIL)
 476                 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
 477         if (changed_flags & FIF_CONTROL)
 478                 wiphy_err(wiphy, "FIF_CONTROL\n");
 479         if (changed_flags & FIF_OTHER_BSS)
 480                 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
 481         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 482                 LOCK(wl);
 483                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 484                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 485                         brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
 486                 } else {
 487                         brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
 488                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 489                 }
 490                 UNLOCK(wl);
 491         }
 492         return;
 493 }
 494
 495 static int
 496 brcms_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
 497 {
 498         return 0;
 499 }
 500
 501 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 502 {
 503         struct brcms_info *wl = hw->priv;
 504         LOCK(wl);
 505         brcms_c_scan_start(wl->wlc);
 506         UNLOCK(wl);
 507         return;
 508 }
 509
 510 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 511 {
 512         struct brcms_info *wl = hw->priv;
 513         LOCK(wl);
 514         brcms_c_scan_stop(wl->wlc);
 515         UNLOCK(wl);
 516         return;
 517 }
 518
 519 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 520 {
 521         wiphy_err(hw->wiphy, "%s: Enter\n", __func__);
 522         return;
 523 }
 524
 525 static int
 526 brcms_ops_get_stats(struct ieee80211_hw *hw,
 527                  struct ieee80211_low_level_stats *stats)
 528 {
 529         struct brcms_info *wl = hw->priv;
 530         struct wl_cnt *cnt;
 531
 532         LOCK(wl);
 533         cnt = wl->pub->_cnt;
 534         stats->dot11ACKFailureCount = 0;
 535         stats->dot11RTSFailureCount = 0;
 536         stats->dot11FCSErrorCount = 0;
 537         stats->dot11RTSSuccessCount = 0;
 538         UNLOCK(wl);
 539         return 0;
 540 }
 541
 542 static void
 543 brcms_ops_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 544                   enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
 545 {
 546         switch (cmd) {
 547         default:
 548                 wiphy_err(hw->wiphy, "%s: Unknown cmd = %d\n", __func__,
 549                           cmd);
 550                 break;
 551         }
 552         return;
 553 }
 554
 555 static int
 556 brcms_ops_conf_tx(struct ieee80211_hw *hw, u16 queue,
 557                const struct ieee80211_tx_queue_params *params)
 558 {
 559         struct brcms_info *wl = hw->priv;
 560
 561         LOCK(wl);
 562         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 563         UNLOCK(wl);
 564
 565         return 0;
 566 }
 567
 568 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw)
 569 {
 570         wiphy_err(hw->wiphy, "%s: Enter\n", __func__);
 571         return 0;
 572 }
 573
 574 static int
 575 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 576                struct ieee80211_sta *sta)
 577 {
 578         struct scb *scb;
 579
 580         int i;
 581         struct brcms_info *wl = hw->priv;
 582
 583         /* Init the scb */
 584         scb = (struct scb *)sta->drv_priv;
 585         memset(scb, 0, sizeof(struct scb));
 586         for (i = 0; i < NUMPRIO; i++)
 587                 scb->seqctl[i] = 0xFFFF;
 588         scb->seqctl_nonqos = 0xFFFF;
 589         scb->magic = SCB_MAGIC;
 590
 591         wl->pub->global_scb = scb;
 592         wl->pub->global_ampdu = &(scb->scb_ampdu);
 593         wl->pub->global_ampdu->scb = scb;
 594         wl->pub->global_ampdu->max_pdu = 16;
 595         brcmu_pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID,
 596                   AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT);
 597
 598         sta->ht_cap.ht_supported = true;
 599         sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 600         sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY;
 601         sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD |
 602             IEEE80211_HT_CAP_SGI_20 |
 603             IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT;
 604
 605         /* minstrel_ht initiates addBA on our behalf by calling ieee80211_start_tx_ba_session() */
 606         return 0;
 607 }
 608
 609 static int
 610 brcms_ops_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 611                   struct ieee80211_sta *sta)
 612 {
 613         return 0;
 614 }
 615
 616 static int
 617 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 618                     struct ieee80211_vif *vif,
 619                     enum ieee80211_ampdu_mlme_action action,
 620                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 621                     u8 buf_size)
 622 {
 623         struct scb *scb = (struct scb *)sta->drv_priv;
 624         struct brcms_info *wl = hw->priv;
 625         int status;
 626
 627         if (WARN_ON(scb->magic != SCB_MAGIC))
 628                 return -EIDRM;
 629         switch (action) {
 630         case IEEE80211_AMPDU_RX_START:
 631                 break;
 632         case IEEE80211_AMPDU_RX_STOP:
 633                 break;
 634         case IEEE80211_AMPDU_TX_START:
 635                 LOCK(wl);
 636                 status = brcms_c_aggregatable(wl->wlc, tid);
 637                 UNLOCK(wl);
 638                 if (!status) {
 639                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 640                                   tid);
 641                         return -EINVAL;
 642                 }
 643                 /* Future improvement: Use the starting sequence number provided ... */
 644                 *ssn = 0;
 645                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 646                 break;
 647
 648         case IEEE80211_AMPDU_TX_STOP:
 649                 LOCK(wl);
 650                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 651                 UNLOCK(wl);
 652                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 653                 break;
 654         case IEEE80211_AMPDU_TX_OPERATIONAL:
 655                 /*
 656                  * BA window size from ADDBA response ('buf_size') defines how
 657                  * many outstanding MPDUs are allowed for the BA stream by
 658                  * recipient and traffic class. 'ampdu_factor' gives maximum
 659                  * AMPDU size.
 660                  */
 661                 LOCK(wl);
 662                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 663                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 664                          sta->ht_cap.ampdu_factor)) - 1);
 665                 UNLOCK(wl);
 666                 /* Power save wakeup */
 667                 break;
 668         default:
 669                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 670                           __func__);
 671         }
 672
 673         return 0;
 674 }
 675
 676 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 677 {
 678         struct brcms_info *wl = HW_TO_WL(hw);
 679         bool blocked;
 680
 681         LOCK(wl);
 682         blocked = brcms_c_check_radio_disabled(wl->wlc);
 683         UNLOCK(wl);
 684
 685         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 686 }
 687
 688 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 689 {
 690         struct brcms_info *wl = HW_TO_WL(hw);
 691
 692         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 693
 694         /* wait for packet queue and dma fifos to run empty */
 695         LOCK(wl);
 696         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 697         UNLOCK(wl);
 698 }
 699
 700 static const struct ieee80211_ops brcms_ops = {
 701         .tx = brcms_ops_tx,
 702         .start = brcms_ops_start,
 703         .stop = brcms_ops_stop,
 704         .add_interface = brcms_ops_add_interface,
 705         .remove_interface = brcms_ops_remove_interface,
 706         .config = brcms_ops_config,
 707         .bss_info_changed = brcms_ops_bss_info_changed,
 708         .configure_filter = brcms_ops_configure_filter,
 709         .set_tim = brcms_ops_set_tim,
 710         .sw_scan_start = brcms_ops_sw_scan_start,
 711         .sw_scan_complete = brcms_ops_sw_scan_complete,
 712         .set_tsf = brcms_ops_set_tsf,
 713         .get_stats = brcms_ops_get_stats,
 714         .sta_notify = brcms_ops_sta_notify,
 715         .conf_tx = brcms_ops_conf_tx,
 716         .get_tsf = brcms_ops_get_tsf,
 717         .sta_add = brcms_ops_sta_add,
 718         .sta_remove = brcms_ops_sta_remove,
 719         .ampdu_action = brcms_ops_ampdu_action,
 720         .rfkill_poll = brcms_ops_rfkill_poll,
 721         .flush = brcms_ops_flush,
 722 };
 723
 724 /*
 725  * is called in brcms_pci_probe() context, therefore no locking required.
 726  */
 727 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 728 {
 729         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 730 }
 731
 732 /**
 733  * attach to the WL device.
 734  *
 735  * Attach to the WL device identified by vendor and device parameters.
 736  * regs is a host accessible memory address pointing to WL device registers.
 737  *
 738  * brcms_attach is not defined as static because in the case where no bus
 739  * is defined, wl_attach will never be called, and thus, gcc will issue
 740  * a warning that this function is defined but not used if we declare
 741  * it as static.
 742  *
 743  *
 744  * is called in brcms_pci_probe() context, therefore no locking required.
 745  */
 746 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
 747                                        unsigned long regs,
 748                             uint bustype, void *btparam, uint irq)
 749 {
 750         struct brcms_info *wl = NULL;
 751         int unit, err;
 752         unsigned long base_addr;
 753         struct ieee80211_hw *hw;
 754         u8 perm[ETH_ALEN];
 755
 756         unit = n_adapters_found;
 757         err = 0;
 758
 759         if (unit < 0) {
 760                 return NULL;
 761         }
 762
 763         /* allocate private info */
 764         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
 765         if (hw != NULL)
 766                 wl = hw->priv;
 767         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
 768                 return NULL;
 769         wl->wiphy = hw->wiphy;
 770
 771         atomic_set(&wl->callbacks, 0);
 772
 773         /* setup the bottom half handler */
 774         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
 775
 776
 777
 778         base_addr = regs;
 779
 780         if (bustype == PCI_BUS || bustype == RPC_BUS) {
 781                 /* Do nothing */
 782         } else {
 783                 bustype = PCI_BUS;
 784                 BCMMSG(wl->wiphy, "force to PCI\n");
 785         }
 786         wl->bcm_bustype = bustype;
 787
 788         wl->regsva = ioremap_nocache(base_addr, PCI_BAR0_WINSZ);
 789         if (wl->regsva == NULL) {
 790                 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
 791                 goto fail;
 792         }
 793         spin_lock_init(&wl->lock);
 794         spin_lock_init(&wl->isr_lock);
 795
 796         /* prepare ucode */
 797         if (brcms_request_fw(wl, (struct pci_dev *)btparam) < 0) {
 798                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
 799                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
 800                 brcms_release_fw(wl);
 801                 brcms_remove((struct pci_dev *)btparam);
 802                 return NULL;
 803         }
 804
 805         /* common load-time initialization */
 806         wl->wlc = brcms_c_attach((void *)wl, vendor, device, unit, false,
 807                              wl->regsva, wl->bcm_bustype, btparam, &err);
 808         brcms_release_fw(wl);
 809         if (!wl->wlc) {
 810                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
 811                           KBUILD_MODNAME, err);
 812                 goto fail;
 813         }
 814         wl->pub = brcms_c_pub(wl->wlc);
 815
 816         wl->pub->ieee_hw = hw;
 817
 818         if (brcms_c_set_par(wl->wlc, IOV_MPC, 0) < 0) {
 819                 wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n",
 820                           unit);
 821         }
 822
 823         /* register our interrupt handler */
 824         if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
 825                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
 826                 goto fail;
 827         }
 828         wl->irq = irq;
 829
 830         /* register module */
 831         brcms_c_module_register(wl->pub, "linux", wl, wl_linux_watchdog, NULL);
 832
 833         if (ieee_hw_init(hw)) {
 834                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
 835                           __func__);
 836                 goto fail;
 837         }
 838
 839         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
 840         if (WARN_ON(!is_valid_ether_addr(perm)))
 841                 goto fail;
 842         SET_IEEE80211_PERM_ADDR(hw, perm);
 843
 844         err = ieee80211_register_hw(hw);
 845         if (err) {
 846                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
 847                           "%d\n", __func__, err);
 848         }
 849
 850         if (wl->pub->srom_ccode[0])
 851                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
 852         else
 853                 err = brcms_set_hint(wl, "US");
 854         if (err) {
 855                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
 856                           __func__, err);
 857         }
 858
 859         n_adapters_found++;
 860         return wl;
 861
 862 fail:
 863         brcms_free(wl);
 864         return NULL;
 865 }
 866
 867
 868
 869 #define CHAN2GHZ(channel, freqency, chflags)  { \
 870         .band = IEEE80211_BAND_2GHZ, \
 871         .center_freq = (freqency), \
 872         .hw_value = (channel), \
 873         .flags = chflags, \
 874         .max_antenna_gain = 0, \
 875         .max_power = 19, \
 876 }
 877
 878 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 879         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 880         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 881         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 882         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 883         CHAN2GHZ(5, 2432, 0),
 884         CHAN2GHZ(6, 2437, 0),
 885         CHAN2GHZ(7, 2442, 0),
 886         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 887         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 888         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 889         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 890         CHAN2GHZ(12, 2467,
 891                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 892                  IEEE80211_CHAN_NO_HT40PLUS),
 893         CHAN2GHZ(13, 2472,
 894                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 895                  IEEE80211_CHAN_NO_HT40PLUS),
 896         CHAN2GHZ(14, 2484,
 897                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 898                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 899 };
 900
 901 #define CHAN5GHZ(channel, chflags)  { \
 902         .band = IEEE80211_BAND_5GHZ, \
 903         .center_freq = 5000 + 5*(channel), \
 904         .hw_value = (channel), \
 905         .flags = chflags, \
 906         .max_antenna_gain = 0, \
 907         .max_power = 21, \
 908 }
 909
 910 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 911         /* UNII-1 */
 912         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 913         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 914         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 915         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 916         /* UNII-2 */
 917         CHAN5GHZ(52,
 918                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 919                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 920         CHAN5GHZ(56,
 921                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 922                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 923         CHAN5GHZ(60,
 924                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 925                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 926         CHAN5GHZ(64,
 927                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 928                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 929         /* MID */
 930         CHAN5GHZ(100,
 931                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 932                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 933         CHAN5GHZ(104,
 934                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 935                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 936         CHAN5GHZ(108,
 937                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 938                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 939         CHAN5GHZ(112,
 940                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 941                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 942         CHAN5GHZ(116,
 943                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 944                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 945         CHAN5GHZ(120,
 946                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 947                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 948         CHAN5GHZ(124,
 949                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 950                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 951         CHAN5GHZ(128,
 952                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 953                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 954         CHAN5GHZ(132,
 955                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 956                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 957         CHAN5GHZ(136,
 958                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 959                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 960         CHAN5GHZ(140,
 961                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 962                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 963                  IEEE80211_CHAN_NO_HT40MINUS),
 964         /* UNII-3 */
 965         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 966         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 967         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 968         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 969         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 970 };
 971
 972 #define RATE(rate100m, _flags) { \
 973         .bitrate = (rate100m), \
 974         .flags = (_flags), \
 975         .hw_value = (rate100m / 5), \
 976 }
 977
 978 static struct ieee80211_rate legacy_ratetable[] = {
 979         RATE(10, 0),
 980         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 981         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 982         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 983         RATE(60, 0),
 984         RATE(90, 0),
 985         RATE(120, 0),
 986         RATE(180, 0),
 987         RATE(240, 0),
 988         RATE(360, 0),
 989         RATE(480, 0),
 990         RATE(540, 0),
 991 };
 992
 993 static struct ieee80211_supported_band brcms_band_2GHz_nphy = {
 994         .band = IEEE80211_BAND_2GHZ,
 995         .channels = brcms_2ghz_chantable,
 996         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 997         .bitrates = legacy_ratetable,
 998         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 999         .ht_cap = {
1000                    /* from include/linux/ieee80211.h */
1001                    .cap = IEEE80211_HT_CAP_GRN_FLD |
1002                    IEEE80211_HT_CAP_SGI_20 |
1003                    IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT,
1004                    .ht_supported = true,
1005                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
1006                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
1007                    .mcs = {
1008                            /* placeholders for now */
1009                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
1010                            .rx_highest = 500,
1011                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
1012                    }
1013 };
1014
1015 static struct ieee80211_supported_band brcms_band_5GHz_nphy = {
1016         .band = IEEE80211_BAND_5GHZ,
1017         .channels = brcms_5ghz_nphy_chantable,
1018         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
1019         .bitrates = legacy_ratetable + 4,
1020         .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 4,
1021         .ht_cap = {
1022                    /* use IEEE80211_HT_CAP_* from include/linux/ieee80211.h */
1023                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT,     /* No 40 mhz yet */
1024                    .ht_supported = true,
1025                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
1026                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
1027                    .mcs = {
1028                            /* placeholders for now */
1029                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
1030                            .rx_highest = 500,
1031                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
1032                    }
1033 };
1034
1035 /*
1036  * is called in brcms_pci_probe() context, therefore no locking required.
1037  */
1038 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1039 {
1040         struct brcms_info *wl = HW_TO_WL(hw);
1041         int has_5g;
1042         char phy_list[4];
1043
1044         has_5g = 0;
1045
1046         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1047         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1048
1049         if (brcms_c_get(wl->wlc, BRCM_GET_PHYLIST, (int *)&phy_list) < 0)
1050                 wiphy_err(hw->wiphy, "Phy list failed\n");
1051
1052         if (phy_list[0] == 'n' || phy_list[0] == 'c') {
1053                 if (phy_list[0] == 'c') {
1054                         /* Single stream */
1055                         brcms_band_2GHz_nphy.ht_cap.mcs.rx_mask[1] = 0;
1056                         brcms_band_2GHz_nphy.ht_cap.mcs.rx_highest = 72;
1057                 }
1058                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &brcms_band_2GHz_nphy;
1059         } else {
1060                 return -EPERM;
1061         }
1062
1063         /* Assume all bands use the same phy.  True for 11n devices. */
1064         if (NBANDS_PUB(wl->pub) > 1) {
1065                 has_5g++;
1066                 if (phy_list[0] == 'n' || phy_list[0] == 'c') {
1067                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1068                             &brcms_band_5GHz_nphy;
1069                 } else {
1070                         return -EPERM;
1071                 }
1072         }
1073         return 0;
1074 }
1075
1076 /*
1077  * is called in brcms_pci_probe() context, therefore no locking required.
1078  */
1079 static int ieee_hw_init(struct ieee80211_hw *hw)
1080 {
1081         hw->flags = IEEE80211_HW_SIGNAL_DBM
1082             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1083             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1084             | IEEE80211_HW_AMPDU_AGGREGATION;
1085
1086         hw->extra_tx_headroom = brcms_c_get_header_len();
1087         hw->queues = N_TX_QUEUES;
1088         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1089
1090         hw->channel_change_time = 7 * 1000;     /* channel change time is dependent on chip and band  */
1091         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1092
1093         hw->rate_control_algorithm = "minstrel_ht";
1094
1095         hw->sta_data_size = sizeof(struct scb);
1096         return ieee_hw_rate_init(hw);
1097 }
1098
1099 /**
1100  * determines if a device is a WL device, and if so, attaches it.
1101  *
1102  * This function determines if a device pointed to by pdev is a WL device,
1103  * and if so, performs a brcms_attach() on it.
1104  *
1105  * Perimeter lock is initialized in the course of this function.
1106  */
1107 static int __devinit
1108 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1109 {
1110         int rc;
1111         struct brcms_info *wl;
1112         struct ieee80211_hw *hw;
1113         u32 val;
1114
1115         dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1116                pdev->bus->number, PCI_SLOT(pdev->devfn),
1117                PCI_FUNC(pdev->devfn), pdev->irq);
1118
1119         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1120             ((pdev->device != 0x0576) &&
1121              ((pdev->device & 0xff00) != 0x4300) &&
1122              ((pdev->device & 0xff00) != 0x4700) &&
1123              ((pdev->device < 43000) || (pdev->device > 43999))))
1124                 return -ENODEV;
1125
1126         rc = pci_enable_device(pdev);
1127         if (rc) {
1128                 pr_err("%s: Cannot enable device %d-%d_%d\n",
1129                        __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1130                        PCI_FUNC(pdev->devfn));
1131                 return -ENODEV;
1132         }
1133         pci_set_master(pdev);
1134
1135         pci_read_config_dword(pdev, 0x40, &val);
1136         if ((val & 0x0000ff00) != 0)
1137                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1138
1139         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1140         if (!hw) {
1141                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1142                 return -ENOMEM;
1143         }
1144
1145         SET_IEEE80211_DEV(hw, &pdev->dev);
1146
1147         pci_set_drvdata(pdev, hw);
1148
1149         memset(hw->priv, 0, sizeof(*wl));
1150
1151         wl = brcms_attach(pdev->vendor, pdev->device,
1152                           pci_resource_start(pdev, 0), PCI_BUS, pdev,
1153                           pdev->irq);
1154
1155         if (!wl) {
1156                 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1157                        __func__);
1158                 return -ENODEV;
1159         }
1160         return 0;
1161 }
1162
1163 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1164 {
1165         struct brcms_info *wl;
1166         struct ieee80211_hw *hw;
1167
1168         hw = pci_get_drvdata(pdev);
1169         wl = HW_TO_WL(hw);
1170         if (!wl) {
1171                 wiphy_err(wl->wiphy,
1172                           "brcms_suspend: pci_get_drvdata failed\n");
1173                 return -ENODEV;
1174         }
1175
1176         /* only need to flag hw is down for proper resume */
1177         LOCK(wl);
1178         wl->pub->hw_up = false;
1179         UNLOCK(wl);
1180
1181         pci_save_state(pdev);
1182         pci_disable_device(pdev);
1183         return pci_set_power_state(pdev, PCI_D3hot);
1184 }
1185
1186 static int brcms_resume(struct pci_dev *pdev)
1187 {
1188         struct brcms_info *wl;
1189         struct ieee80211_hw *hw;
1190         int err = 0;
1191         u32 val;
1192
1193         hw = pci_get_drvdata(pdev);
1194         wl = HW_TO_WL(hw);
1195         if (!wl) {
1196                 wiphy_err(wl->wiphy,
1197                           "wl: brcms_resume: pci_get_drvdata failed\n");
1198                 return -ENODEV;
1199         }
1200
1201         err = pci_set_power_state(pdev, PCI_D0);
1202         if (err)
1203                 return err;
1204
1205         pci_restore_state(pdev);
1206
1207         err = pci_enable_device(pdev);
1208         if (err)
1209                 return err;
1210
1211         pci_set_master(pdev);
1212
1213         pci_read_config_dword(pdev, 0x40, &val);
1214         if ((val & 0x0000ff00) != 0)
1215                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1216
1217         /*
1218         *  done. driver will be put in up state
1219         *  in brcms_ops_add_interface() call.
1220         */
1221         return err;
1222 }
1223
1224 /*
1225 * called from both kernel as from this kernel module.
1226 * precondition: perimeter lock is not acquired.
1227 */
1228 static void brcms_remove(struct pci_dev *pdev)
1229 {
1230         struct brcms_info *wl;
1231         struct ieee80211_hw *hw;
1232         int status;
1233
1234         hw = pci_get_drvdata(pdev);
1235         wl = HW_TO_WL(hw);
1236         if (!wl) {
1237                 pr_err("wl: brcms_remove: pci_get_drvdata failed\n");
1238                 return;
1239         }
1240
1241         LOCK(wl);
1242         status = brcms_c_chipmatch(pdev->vendor, pdev->device);
1243         UNLOCK(wl);
1244         if (!status) {
1245                 wiphy_err(wl->wiphy, "wl: brcms_remove: chipmatch "
1246                                      "failed\n");
1247                 return;
1248         }
1249         if (wl->wlc) {
1250                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
1251                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
1252                 ieee80211_unregister_hw(hw);
1253                 LOCK(wl);
1254                 brcms_down(wl);
1255                 UNLOCK(wl);
1256         }
1257         pci_disable_device(pdev);
1258
1259         brcms_free(wl);
1260
1261         pci_set_drvdata(pdev, NULL);
1262         ieee80211_free_hw(hw);
1263 }
1264
1265 static struct pci_driver brcms_pci_driver = {
1266         .name     = KBUILD_MODNAME,
1267         .probe    = brcms_pci_probe,
1268         .suspend  = brcms_suspend,
1269         .resume   = brcms_resume,
1270         .remove   = __devexit_p(brcms_remove),
1271         .id_table = brcms_pci_id_table,
1272 };
1273
1274 /**
1275  * This is the main entry point for the WL driver.
1276  *
1277  * This function determines if a device pointed to by pdev is a WL device,
1278  * and if so, performs a brcms_attach() on it.
1279  *
1280  */
1281 static int __init brcms_module_init(void)
1282 {
1283         int error = -ENODEV;
1284
1285 #ifdef BCMDBG
1286         if (msglevel != 0xdeadbeef)
1287                 brcm_msg_level = msglevel;
1288         if (phymsglevel != 0xdeadbeef)
1289                 phyhal_msg_level = phymsglevel;
1290 #endif                          /* BCMDBG */
1291
1292         error = pci_register_driver(&brcms_pci_driver);
1293         if (!error)
1294                 return 0;
1295
1296
1297
1298         return error;
1299 }
1300
1301 /**
1302  * This function unloads the WL driver from the system.
1303  *
1304  * This function unconditionally unloads the WL driver module from the
1305  * system.
1306  *
1307  */
1308 static void __exit brcms_module_exit(void)
1309 {
1310         pci_unregister_driver(&brcms_pci_driver);
1311
1312 }
1313
1314 module_init(brcms_module_init);
1315 module_exit(brcms_module_exit);
1316
1317 /**
1318  * This function frees the WL per-device resources.
1319  *
1320  * This function frees resources owned by the WL device pointed to
1321  * by the wl parameter.
1322  *
1323  * precondition: can both be called locked and unlocked
1324  *
1325  */
1326 static void brcms_free(struct brcms_info *wl)
1327 {
1328         struct brcms_timer *t, *next;
1329
1330         /* free ucode data */
1331         if (wl->fw.fw_cnt)
1332                 brcms_ucode_data_free();
1333         if (wl->irq)
1334                 free_irq(wl->irq, wl);
1335
1336         /* kill dpc */
1337         tasklet_kill(&wl->tasklet);
1338
1339         if (wl->pub) {
1340                 brcms_c_module_unregister(wl->pub, "linux", wl);
1341         }
1342
1343         /* free common resources */
1344         if (wl->wlc) {
1345                 brcms_c_detach(wl->wlc);
1346                 wl->wlc = NULL;
1347                 wl->pub = NULL;
1348         }
1349
1350         /* virtual interface deletion is deferred so we cannot spinwait */
1351
1352         /* wait for all pending callbacks to complete */
1353         while (atomic_read(&wl->callbacks) > 0)
1354                 schedule();
1355
1356         /* free timers */
1357         for (t = wl->timers; t; t = next) {
1358                 next = t->next;
1359 #ifdef BCMDBG
1360                 kfree(t->name);
1361 #endif
1362                 kfree(t);
1363         }
1364
1365         /*
1366          * unregister_netdev() calls get_stats() which may read chip registers
1367          * so we cannot unmap the chip registers until after calling unregister_netdev() .
1368          */
1369         if (wl->regsva && wl->bcm_bustype != SDIO_BUS &&
1370             wl->bcm_bustype != JTAG_BUS) {
1371                 iounmap((void *)wl->regsva);
1372         }
1373         wl->regsva = NULL;
1374 }
1375
1376 /* flags the given rate in rateset as requested */
1377 static void brcms_set_basic_rate(struct wl_rateset *rs, u16 rate, bool is_br)
1378 {
1379         u32 i;
1380
1381         for (i = 0; i < rs->count; i++) {
1382                 if (rate != (rs->rates[i] & 0x7f))
1383                         continue;
1384
1385                 if (is_br)
1386                         rs->rates[i] |= BRCMS_RATE_FLAG;
1387                 else
1388                         rs->rates[i] &= BRCMS_RATE_MASK;
1389                 return;
1390         }
1391 }
1392
1393 /*
1394  * precondition: perimeter lock has been acquired
1395  */
1396 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1397                          bool state, int prio)
1398 {
1399         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1400 }
1401
1402 /*
1403  * precondition: perimeter lock has been acquired
1404  */
1405 void brcms_init(struct brcms_info *wl)
1406 {
1407         BCMMSG(WL_TO_HW(wl)->wiphy, "wl%d\n", wl->pub->unit);
1408         brcms_reset(wl);
1409
1410         brcms_c_init(wl->wlc);
1411 }
1412
1413 /*
1414  * precondition: perimeter lock has been acquired
1415  */
1416 uint brcms_reset(struct brcms_info *wl)
1417 {
1418         BCMMSG(WL_TO_HW(wl)->wiphy, "wl%d\n", wl->pub->unit);
1419         brcms_c_reset(wl->wlc);
1420
1421         /* dpc will not be rescheduled */
1422         wl->resched = 0;
1423
1424         return 0;
1425 }
1426
1427 /*
1428  * These are interrupt on/off entry points. Disable interrupts
1429  * during interrupt state transition.
1430  */
1431 void brcms_intrson(struct brcms_info *wl)
1432 {
1433         unsigned long flags;
1434
1435         INT_LOCK(wl, flags);
1436         brcms_c_intrson(wl->wlc);
1437         INT_UNLOCK(wl, flags);
1438 }
1439
1440 /*
1441  * precondition: perimeter lock has been acquired
1442  */
1443 bool wl_alloc_dma_resources(struct brcms_info *wl, uint addrwidth)
1444 {
1445         return true;
1446 }
1447
1448 u32 brcms_intrsoff(struct brcms_info *wl)
1449 {
1450         unsigned long flags;
1451         u32 status;
1452
1453         INT_LOCK(wl, flags);
1454         status = brcms_c_intrsoff(wl->wlc);
1455         INT_UNLOCK(wl, flags);
1456         return status;
1457 }
1458
1459 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1460 {
1461         unsigned long flags;
1462
1463         INT_LOCK(wl, flags);
1464         brcms_c_intrsrestore(wl->wlc, macintmask);
1465         INT_UNLOCK(wl, flags);
1466 }
1467
1468 /*
1469  * precondition: perimeter lock has been acquired
1470  */
1471 int brcms_up(struct brcms_info *wl)
1472 {
1473         int error = 0;
1474
1475         if (wl->pub->up)
1476                 return 0;
1477
1478         error = brcms_c_up(wl->wlc);
1479
1480         return error;
1481 }
1482
1483 /*
1484  * precondition: perimeter lock has been acquired
1485  */
1486 void brcms_down(struct brcms_info *wl)
1487 {
1488         uint callbacks, ret_val = 0;
1489
1490         /* call common down function */
1491         ret_val = brcms_c_down(wl->wlc);
1492         callbacks = atomic_read(&wl->callbacks) - ret_val;
1493
1494         /* wait for down callbacks to complete */
1495         UNLOCK(wl);
1496
1497         /* For HIGH_only driver, it's important to actually schedule other work,
1498          * not just spin wait since everything runs at schedule level
1499          */
1500         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1501
1502         LOCK(wl);
1503 }
1504
1505 static irqreturn_t brcms_isr(int irq, void *dev_id)
1506 {
1507         struct brcms_info *wl;
1508         bool ours, wantdpc;
1509         unsigned long flags;
1510
1511         wl = (struct brcms_info *) dev_id;
1512
1513         ISR_LOCK(wl, flags);
1514
1515         /* call common first level interrupt handler */
1516         ours = brcms_c_isr(wl->wlc, &wantdpc);
1517         if (ours) {
1518                 /* if more to do... */
1519                 if (wantdpc) {
1520
1521                         /* ...and call the second level interrupt handler */
1522                         /* schedule dpc */
1523                         tasklet_schedule(&wl->tasklet);
1524                 }
1525         }
1526
1527         ISR_UNLOCK(wl, flags);
1528
1529         return IRQ_RETVAL(ours);
1530 }
1531
1532 static void brcms_dpc(unsigned long data)
1533 {
1534         struct brcms_info *wl;
1535
1536         wl = (struct brcms_info *) data;
1537
1538         LOCK(wl);
1539
1540         /* call the common second level interrupt handler */
1541         if (wl->pub->up) {
1542                 if (wl->resched) {
1543                         unsigned long flags;
1544
1545                         INT_LOCK(wl, flags);
1546                         brcms_c_intrsupd(wl->wlc);
1547                         INT_UNLOCK(wl, flags);
1548                 }
1549
1550                 wl->resched = brcms_c_dpc(wl->wlc, true);
1551         }
1552
1553         /* brcms_c_dpc() may bring the driver down */
1554         if (!wl->pub->up)
1555                 goto done;
1556
1557         /* re-schedule dpc */
1558         if (wl->resched)
1559                 tasklet_schedule(&wl->tasklet);
1560         else {
1561                 /* re-enable interrupts */
1562                 brcms_intrson(wl);
1563         }
1564
1565  done:
1566         UNLOCK(wl);
1567 }
1568
1569 /*
1570  * is called by the kernel from software irq context
1571  */
1572 static void brcms_timer(unsigned long data)
1573 {
1574         _brcms_timer((struct brcms_timer *) data);
1575 }
1576
1577 /*
1578 * precondition: perimeter lock is not acquired
1579  */
1580 static void _brcms_timer(struct brcms_timer *t)
1581 {
1582         LOCK(t->wl);
1583
1584         if (t->set) {
1585                 if (t->periodic) {
1586                         t->timer.expires = jiffies + t->ms * HZ / 1000;
1587                         atomic_inc(&t->wl->callbacks);
1588                         add_timer(&t->timer);
1589                         t->set = true;
1590                 } else
1591                         t->set = false;
1592
1593                 t->fn(t->arg);
1594         }
1595
1596         atomic_dec(&t->wl->callbacks);
1597
1598         UNLOCK(t->wl);
1599 }
1600
1601 /*
1602  * Adds a timer to the list. Caller supplies a timer function.
1603  * Is called from wlc.
1604  *
1605  * precondition: perimeter lock has been acquired
1606  */
1607 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1608                                      void (*fn) (void *arg),
1609                                      void *arg, const char *name)
1610 {
1611         struct brcms_timer *t;
1612
1613         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1614         if (!t) {
1615                 wiphy_err(wl->wiphy, "wl%d: brcms_init_timer: out of memory\n",
1616                           wl->pub->unit);
1617                 return 0;
1618         }
1619
1620         init_timer(&t->timer);
1621         t->timer.data = (unsigned long) t;
1622         t->timer.function = brcms_timer;
1623         t->wl = wl;
1624         t->fn = fn;
1625         t->arg = arg;
1626         t->next = wl->timers;
1627         wl->timers = t;
1628
1629 #ifdef BCMDBG
1630         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1631         if (t->name)
1632                 strcpy(t->name, name);
1633 #endif
1634
1635         return t;
1636 }
1637
1638 /* BMAC_NOTE: Add timer adds only the kernel timer since it's going to be more accurate
1639  * as well as it's easier to make it periodic
1640  *
1641  * precondition: perimeter lock has been acquired
1642  */
1643 void brcms_add_timer(struct brcms_info *wl, struct brcms_timer *t, uint ms,
1644                      int periodic)
1645 {
1646 #ifdef BCMDBG
1647         if (t->set) {
1648                 wiphy_err(wl->wiphy, "%s: Already set. Name: %s, per %d\n",
1649                           __func__, t->name, periodic);
1650         }
1651 #endif
1652         t->ms = ms;
1653         t->periodic = (bool) periodic;
1654         t->set = true;
1655         t->timer.expires = jiffies + ms * HZ / 1000;
1656
1657         atomic_inc(&wl->callbacks);
1658         add_timer(&t->timer);
1659 }
1660
1661 /*
1662  * return true if timer successfully deleted, false if still pending
1663  *
1664  * precondition: perimeter lock has been acquired
1665  */
1666 bool brcms_del_timer(struct brcms_info *wl, struct brcms_timer *t)
1667 {
1668         if (t->set) {
1669                 t->set = false;
1670                 if (!del_timer(&t->timer)) {
1671                         return false;
1672                 }
1673                 atomic_dec(&wl->callbacks);
1674         }
1675
1676         return true;
1677 }
1678
1679 /*
1680  * precondition: perimeter lock has been acquired
1681  */
1682 void brcms_free_timer(struct brcms_info *wl, struct brcms_timer *t)
1683 {
1684         struct brcms_timer *tmp;
1685
1686         /* delete the timer in case it is active */
1687         brcms_del_timer(wl, t);
1688
1689         if (wl->timers == t) {
1690                 wl->timers = wl->timers->next;
1691 #ifdef BCMDBG
1692                 kfree(t->name);
1693 #endif
1694                 kfree(t);
1695                 return;
1696
1697         }
1698
1699         tmp = wl->timers;
1700         while (tmp) {
1701                 if (tmp->next == t) {
1702                         tmp->next = t->next;
1703 #ifdef BCMDBG
1704                         kfree(t->name);
1705 #endif
1706                         kfree(t);
1707                         return;
1708                 }
1709                 tmp = tmp->next;
1710         }
1711
1712 }
1713
1714 /*
1715  * runs in software irq context
1716  *
1717  * precondition: perimeter lock is not acquired
1718  */
1719 static int wl_linux_watchdog(void *ctx)
1720 {
1721         return 0;
1722 }
1723
1724 struct firmware_hdr {
1725         u32 offset;
1726         u32 len;
1727         u32 idx;
1728 };
1729
1730 char *brcms_firmwares[MAX_FW_IMAGES] = {
1731         "brcm/bcm43xx",
1732         NULL
1733 };
1734
1735 /*
1736  * precondition: perimeter lock has been acquired
1737  */
1738 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1739 {
1740         int i, entry;
1741         const u8 *pdata;
1742         struct firmware_hdr *hdr;
1743         for (i = 0; i < wl->fw.fw_cnt; i++) {
1744                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1745                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1746                      entry++, hdr++) {
1747                         if (hdr->idx == idx) {
1748                                 pdata = wl->fw.fw_bin[i]->data + hdr->offset;
1749                                 *pbuf = kmalloc(hdr->len, GFP_ATOMIC);
1750                                 if (*pbuf == NULL) {
1751                                         wiphy_err(wl->wiphy, "fail to alloc %d"
1752                                                   " bytes\n", hdr->len);
1753                                         goto fail;
1754                                 }
1755                                 memcpy(*pbuf, pdata, hdr->len);
1756                                 return 0;
1757                         }
1758                 }
1759         }
1760         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1761                   idx);
1762         *pbuf = NULL;
1763 fail:
1764         return -ENODATA;
1765 }
1766
1767 /*
1768  * Precondition: Since this function is called in brcms_pci_probe() context,
1769  * no locking is required.
1770  */
1771 int brcms_ucode_init_uint(struct brcms_info *wl, u32 *data, u32 idx)
1772 {
1773         int i, entry;
1774         const u8 *pdata;
1775         struct firmware_hdr *hdr;
1776         for (i = 0; i < wl->fw.fw_cnt; i++) {
1777                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1778                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1779                      entry++, hdr++) {
1780                         if (hdr->idx == idx) {
1781                                 pdata = wl->fw.fw_bin[i]->data + hdr->offset;
1782                                 if (hdr->len != 4) {
1783                                         wiphy_err(wl->wiphy,
1784                                                   "ERROR: fw hdr len\n");
1785                                         return -ENOMSG;
1786                                 }
1787                                 *data = *((u32 *) pdata);
1788                                 return 0;
1789                         }
1790                 }
1791         }
1792         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1793         return -ENOMSG;
1794 }
1795
1796 /*
1797  * Precondition: Since this function is called in brcms_pci_probe() context,
1798  * no locking is required.
1799  */
1800 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
1801 {
1802         int status;
1803         struct device *device = &pdev->dev;
1804         char fw_name[100];
1805         int i;
1806
1807         memset((void *)&wl->fw, 0, sizeof(struct brcms_firmware));
1808         for (i = 0; i < MAX_FW_IMAGES; i++) {
1809                 if (brcms_firmwares[i] == NULL)
1810                         break;
1811                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
1812                         UCODE_LOADER_API_VER);
1813                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
1814                 if (status) {
1815                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
1816                                   KBUILD_MODNAME, fw_name);
1817                         return status;
1818                 }
1819                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
1820                         UCODE_LOADER_API_VER);
1821                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
1822                 if (status) {
1823                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
1824                                   KBUILD_MODNAME, fw_name);
1825                         return status;
1826                 }
1827                 wl->fw.hdr_num_entries[i] =
1828                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
1829         }
1830         wl->fw.fw_cnt = i;
1831         return brcms_ucode_data_init(wl);
1832 }
1833
1834 /*
1835  * precondition: can both be called locked and unlocked
1836  */
1837 void brcms_ucode_free_buf(void *p)
1838 {
1839         kfree(p);
1840 }
1841
1842 /*
1843  * Precondition: Since this function is called in brcms_pci_probe() context,
1844  * no locking is required.
1845  */
1846 static void brcms_release_fw(struct brcms_info *wl)
1847 {
1848         int i;
1849         for (i = 0; i < MAX_FW_IMAGES; i++) {
1850                 release_firmware(wl->fw.fw_bin[i]);
1851                 release_firmware(wl->fw.fw_hdr[i]);
1852         }
1853 }
1854
1855
1856 /*
1857  * checks validity of all firmware images loaded from user space
1858  *
1859  * Precondition: Since this function is called in brcms_pci_probe() context,
1860  * no locking is required.
1861  */
1862 int brcms_check_firmwares(struct brcms_info *wl)
1863 {
1864         int i;
1865         int entry;
1866         int rc = 0;
1867         const struct firmware *fw;
1868         const struct firmware *fw_hdr;
1869         struct firmware_hdr *ucode_hdr;
1870         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1871                 fw =  wl->fw.fw_bin[i];
1872                 fw_hdr = wl->fw.fw_hdr[i];
1873                 if (fw == NULL && fw_hdr == NULL) {
1874                         break;
1875                 } else if (fw == NULL || fw_hdr == NULL) {
1876                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1877                                   __func__);
1878                         rc = -EBADF;
1879                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1880                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1881                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1882                                 sizeof(struct firmware_hdr));
1883                         rc = -EBADF;
1884                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1885                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1886                                   "%zu\n", __func__, fw->size);
1887                         rc = -EBADF;
1888                 } else {
1889                         /* check if ucode section overruns firmware image */
1890                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1891                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1892                              !rc; entry++, ucode_hdr++) {
1893                                 if (ucode_hdr->offset + ucode_hdr->len >
1894                                     fw->size) {
1895                                         wiphy_err(wl->wiphy,
1896                                                   "%s: conflicting bin/hdr\n",
1897                                                   __func__);
1898                                         rc = -EBADF;
1899                                 }
1900                         }
1901                 }
1902         }
1903         if (rc == 0 && wl->fw.fw_cnt != i) {
1904                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1905                         wl->fw.fw_cnt);
1906                 rc = -EBADF;
1907         }
1908         return rc;
1909 }
1910
1911 /*
1912  * precondition: perimeter lock has been acquired
1913  */
1914 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1915 {
1916         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1917
1918         UNLOCK(wl);
1919         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1920         if (blocked)
1921                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1922         LOCK(wl);
1923         return blocked;
1924 }
1925
1926 /*
1927  * precondition: perimeter lock has been acquired
1928  */
1929 void brcms_msleep(struct brcms_info *wl, uint ms)
1930 {
1931         UNLOCK(wl);
1932         msleep(ms);
1933         LOCK(wl);
1934 }