drivers/staging/brcm80211/sys/wl_mac80211.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/kernel.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/string.h>
  22 #include <linux/pci_ids.h>
  23 #include <bcmdefs.h>
  24 #include <linux/module.h>
  25 #include <linux/pci.h>
  26 #include <linux/sched.h>
  27 #include <osl.h>
  28 #define WLC_MAXBSSCFG           1       /* single BSS configs */
  29
  30 #include <wlc_cfg.h>
  31 #include <net/mac80211.h>
  32 #include <phy_version.h>
  33 #include <bcmutils.h>
  34 #include <pcicfg.h>
  35 #include <wlioctl.h>
  36 #include <wlc_key.h>
  37 #include <sbhndpio.h>
  38 #include <sbhnddma.h>
  39 #include <wlc_channel.h>
  40 #include <wlc_pub.h>
  41 #include <wlc_scb.h>
  42 #include <wl_dbg.h>
  43 #include <wl_export.h>
  44
  45 #include <wl_mac80211.h>
  46 #include <linux/firmware.h>
  47 #include <wl_ucode.h>
  48 #include <d11ucode_ext.h>
  49
  50
  51 static void wl_timer(unsigned long data);
  52 static void _wl_timer(wl_timer_t *t);
  53
  54
  55 static int ieee_hw_init(struct ieee80211_hw *hw);
  56 static int ieee_hw_rate_init(struct ieee80211_hw *hw);
  57
  58 static int wl_linux_watchdog(void *ctx);
  59
  60 /* Flags we support */
  61 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  62         FIF_ALLMULTI | \
  63         FIF_FCSFAIL | \
  64         FIF_PLCPFAIL | \
  65         FIF_CONTROL | \
  66         FIF_OTHER_BSS | \
  67         FIF_BCN_PRBRESP_PROMISC)
  68
  69 static int wl_found;
  70
  71 struct ieee80211_tkip_data {
  72 #define TKIP_KEY_LEN 32
  73         u8 key[TKIP_KEY_LEN];
  74         int key_set;
  75
  76         u32 tx_iv32;
  77         u16 tx_iv16;
  78         u16 tx_ttak[5];
  79         int tx_phase1_done;
  80
  81         u32 rx_iv32;
  82         u16 rx_iv16;
  83         u16 rx_ttak[5];
  84         int rx_phase1_done;
  85         u32 rx_iv32_new;
  86         u16 rx_iv16_new;
  87
  88         u32 dot11RSNAStatsTKIPReplays;
  89         u32 dot11RSNAStatsTKIPICVErrors;
  90         u32 dot11RSNAStatsTKIPLocalMICFailures;
  91
  92         int key_idx;
  93
  94         struct crypto_tfm *tfm_arc4;
  95         struct crypto_tfm *tfm_michael;
  96
  97         /* scratch buffers for virt_to_page() (crypto API) */
  98         u8 rx_hdr[16], tx_hdr[16];
  99 };
 100
 101 #define WL_DEV_IF(dev)          ((struct wl_if *)netdev_priv(dev))
 102 #define WL_INFO(dev)            ((struct wl_info *)(WL_DEV_IF(dev)->wl))
 103 static int wl_request_fw(struct wl_info *wl, struct pci_dev *pdev);
 104 static void wl_release_fw(struct wl_info *wl);
 105
 106 /* local prototypes */
 107 static int wl_start(struct sk_buff *skb, struct wl_info *wl);
 108 static int wl_start_int(struct wl_info *wl, struct ieee80211_hw *hw,
 109                         struct sk_buff *skb);
 110 static void wl_dpc(unsigned long data);
 111
 112 MODULE_AUTHOR("Broadcom Corporation");
 113 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
 114 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
 115 MODULE_LICENSE("Dual BSD/GPL");
 116
 117 /* recognized PCI IDs */
 118 static struct pci_device_id wl_id_table[] = {
 119         {PCI_VENDOR_ID_BROADCOM, 0x4357, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 43225 2G */
 120         {PCI_VENDOR_ID_BROADCOM, 0x4353, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 43224 DUAL */
 121         {PCI_VENDOR_ID_BROADCOM, 0x4727, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},      /* 4313 DUAL */
 122         {0}
 123 };
 124
 125 MODULE_DEVICE_TABLE(pci, wl_id_table);
 126 static void wl_remove(struct pci_dev *pdev);
 127
 128
 129 #ifdef BCMDBG
 130 static int msglevel = 0xdeadbeef;
 131 module_param(msglevel, int, 0);
 132 static int phymsglevel = 0xdeadbeef;
 133 module_param(phymsglevel, int, 0);
 134 #endif                          /* BCMDBG */
 135
 136 #define HW_TO_WL(hw)     (hw->priv)
 137 #define WL_TO_HW(wl)      (wl->pub->ieee_hw)
 138 static int wl_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
 139 static int wl_ops_start(struct ieee80211_hw *hw);
 140 static void wl_ops_stop(struct ieee80211_hw *hw);
 141 static int wl_ops_add_interface(struct ieee80211_hw *hw,
 142                                 struct ieee80211_vif *vif);
 143 static void wl_ops_remove_interface(struct ieee80211_hw *hw,
 144                                     struct ieee80211_vif *vif);
 145 static int wl_ops_config(struct ieee80211_hw *hw, u32 changed);
 146 static void wl_ops_bss_info_changed(struct ieee80211_hw *hw,
 147                                     struct ieee80211_vif *vif,
 148                                     struct ieee80211_bss_conf *info,
 149                                     u32 changed);
 150 static void wl_ops_configure_filter(struct ieee80211_hw *hw,
 151                                     unsigned int changed_flags,
 152                                     unsigned int *total_flags, u64 multicast);
 153 static int wl_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
 154                           bool set);
 155 static void wl_ops_sw_scan_start(struct ieee80211_hw *hw);
 156 static void wl_ops_sw_scan_complete(struct ieee80211_hw *hw);
 157 static void wl_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf);
 158 static int wl_ops_get_stats(struct ieee80211_hw *hw,
 159                             struct ieee80211_low_level_stats *stats);
 160 static int wl_ops_set_rts_threshold(struct ieee80211_hw *hw, u32 value);
 161 static void wl_ops_sta_notify(struct ieee80211_hw *hw,
 162                               struct ieee80211_vif *vif,
 163                               enum sta_notify_cmd cmd,
 164                               struct ieee80211_sta *sta);
 165 static int wl_ops_conf_tx(struct ieee80211_hw *hw, u16 queue,
 166                           const struct ieee80211_tx_queue_params *params);
 167 static u64 wl_ops_get_tsf(struct ieee80211_hw *hw);
 168 static int wl_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 169                       struct ieee80211_sta *sta);
 170 static int wl_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 171                          struct ieee80211_sta *sta);
 172 static int wl_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 173                            enum ieee80211_ampdu_mlme_action action,
 174                            struct ieee80211_sta *sta, u16 tid, u16 *ssn);
 175
 176 static int wl_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 177 {
 178         int status;
 179         struct wl_info *wl = hw->priv;
 180         WL_LOCK(wl);
 181         if (!wl->pub->up) {
 182                 WL_ERROR("ops->tx called while down\n");
 183                 status = -ENETDOWN;
 184                 goto done;
 185         }
 186         status = wl_start(skb, wl);
 187  done:
 188         WL_UNLOCK(wl);
 189         return status;
 190 }
 191
 192 static int wl_ops_start(struct ieee80211_hw *hw)
 193 {
 194         struct wl_info *wl = hw->priv;
 195         /*
 196           struct ieee80211_channel *curchan = hw->conf.channel;
 197           WL_NONE("%s : Initial channel: %d\n", __func__, curchan->hw_value);
 198         */
 199
 200         WL_LOCK(wl);
 201         ieee80211_wake_queues(hw);
 202         WL_UNLOCK(wl);
 203
 204         return 0;
 205 }
 206
 207 static void wl_ops_stop(struct ieee80211_hw *hw)
 208 {
 209         struct wl_info *wl = hw->priv;
 210         ASSERT(wl);
 211         WL_LOCK(wl);
 212         ieee80211_stop_queues(hw);
 213         WL_UNLOCK(wl);
 214 }
 215
 216 static int
 217 wl_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 218 {
 219         struct wl_info *wl;
 220         int err;
 221
 222         /* Just STA for now */
 223         if (vif->type != NL80211_IFTYPE_AP &&
 224             vif->type != NL80211_IFTYPE_MESH_POINT &&
 225             vif->type != NL80211_IFTYPE_STATION &&
 226             vif->type != NL80211_IFTYPE_WDS &&
 227             vif->type != NL80211_IFTYPE_ADHOC) {
 228                 WL_ERROR("%s: Attempt to add type %d, only STA for now\n",
 229                          __func__, vif->type);
 230                 return -EOPNOTSUPP;
 231         }
 232
 233         wl = HW_TO_WL(hw);
 234         WL_LOCK(wl);
 235         err = wl_up(wl);
 236         WL_UNLOCK(wl);
 237
 238         if (err != 0)
 239                 WL_ERROR("%s: wl_up() returned %d\n", __func__, err);
 240         return err;
 241 }
 242
 243 static void
 244 wl_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 245 {
 246         struct wl_info *wl;
 247
 248         wl = HW_TO_WL(hw);
 249
 250         /* put driver in down state */
 251         WL_LOCK(wl);
 252         wl_down(wl);
 253         WL_UNLOCK(wl);
 254 }
 255
 256 static int
 257 ieee_set_channel(struct ieee80211_hw *hw, struct ieee80211_channel *chan,
 258                  enum nl80211_channel_type type)
 259 {
 260         struct wl_info *wl = HW_TO_WL(hw);
 261         int err = 0;
 262
 263         switch (type) {
 264         case NL80211_CHAN_HT20:
 265         case NL80211_CHAN_NO_HT:
 266                 err = wlc_set(wl->wlc, WLC_SET_CHANNEL, chan->hw_value);
 267                 break;
 268         case NL80211_CHAN_HT40MINUS:
 269         case NL80211_CHAN_HT40PLUS:
 270                 WL_ERROR("%s: Need to implement 40 Mhz Channels!\n", __func__);
 271                 break;
 272         }
 273
 274         if (err)
 275                 return -EIO;
 276         return err;
 277 }
 278
 279 static int wl_ops_config(struct ieee80211_hw *hw, u32 changed)
 280 {
 281         struct ieee80211_conf *conf = &hw->conf;
 282         struct wl_info *wl = HW_TO_WL(hw);
 283         int err = 0;
 284         int new_int;
 285
 286         WL_LOCK(wl);
 287         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 288                 WL_NONE("%s: Setting listen interval to %d\n",
 289                         __func__, conf->listen_interval);
 290                 if (wlc_iovar_setint
 291                     (wl->wlc, "bcn_li_bcn", conf->listen_interval)) {
 292                         WL_ERROR("%s: Error setting listen_interval\n",
 293                                  __func__);
 294                         err = -EIO;
 295                         goto config_out;
 296                 }
 297                 wlc_iovar_getint(wl->wlc, "bcn_li_bcn", &new_int);
 298                 ASSERT(new_int == conf->listen_interval);
 299         }
 300         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 301                 WL_NONE("Need to set monitor mode\n");
 302         if (changed & IEEE80211_CONF_CHANGE_PS)
 303                 WL_NONE("Need to set Power-save mode\n");
 304
 305         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 306                 WL_NONE("%s: Setting tx power to %d dbm\n",
 307                         __func__, conf->power_level);
 308                 if (wlc_iovar_setint
 309                     (wl->wlc, "qtxpower", conf->power_level * 4)) {
 310                         WL_ERROR("%s: Error setting power_level\n", __func__);
 311                         err = -EIO;
 312                         goto config_out;
 313                 }
 314                 wlc_iovar_getint(wl->wlc, "qtxpower", &new_int);
 315                 if (new_int != (conf->power_level * 4))
 316                         WL_ERROR("%s: Power level req != actual, %d %d\n",
 317                                  __func__, conf->power_level * 4, new_int);
 318         }
 319         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 320                 err = ieee_set_channel(hw, conf->channel, conf->channel_type);
 321         }
 322         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 323                 WL_NONE("%s: srl %d, lrl %d\n",
 324                         __func__,
 325                         conf->short_frame_max_tx_count,
 326                         conf->long_frame_max_tx_count);
 327                 if (wlc_set
 328                     (wl->wlc, WLC_SET_SRL,
 329                      conf->short_frame_max_tx_count) < 0) {
 330                         WL_ERROR("%s: Error setting srl\n", __func__);
 331                         err = -EIO;
 332                         goto config_out;
 333                 }
 334                 if (wlc_set(wl->wlc, WLC_SET_LRL, conf->long_frame_max_tx_count)
 335                     < 0) {
 336                         WL_ERROR("%s: Error setting lrl\n", __func__);
 337                         err = -EIO;
 338                         goto config_out;
 339                 }
 340         }
 341
 342  config_out:
 343         WL_UNLOCK(wl);
 344         return err;
 345 }
 346
 347 static void
 348 wl_ops_bss_info_changed(struct ieee80211_hw *hw,
 349                         struct ieee80211_vif *vif,
 350                         struct ieee80211_bss_conf *info, u32 changed)
 351 {
 352         struct wl_info *wl = HW_TO_WL(hw);
 353         int val;
 354
 355
 356         if (changed & BSS_CHANGED_ASSOC) {
 357                 WL_ERROR("Associated:\t%s\n", info->assoc ? "True" : "False");
 358                 /* association status changed (associated/disassociated)
 359                  * also implies a change in the AID.
 360                  */
 361         }
 362         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 363                 WL_NONE("Use_cts_prot:\t%s Implement me\n",
 364                         info->use_cts_prot ? "True" : "False");
 365                 /* CTS protection changed */
 366         }
 367         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 368                 WL_NONE("Short preamble:\t%s Implement me\n",
 369                         info->use_short_preamble ? "True" : "False");
 370                 /* preamble changed */
 371         }
 372         if (changed & BSS_CHANGED_ERP_SLOT) {
 373                 WL_NONE("Changing short slot:\t%s\n",
 374                         info->use_short_slot ? "True" : "False");
 375                 if (info->use_short_slot)
 376                         val = 1;
 377                 else
 378                         val = 0;
 379                 wlc_set(wl->wlc, WLC_SET_SHORTSLOT_OVERRIDE, val);
 380                 /* slot timing changed */
 381         }
 382
 383         if (changed & BSS_CHANGED_HT) {
 384                 WL_NONE("%s: HT mode - Implement me\n", __func__);
 385                 /* 802.11n parameters changed */
 386         }
 387         if (changed & BSS_CHANGED_BASIC_RATES) {
 388                 WL_NONE("Need to change Basic Rates:\t0x%x! Implement me\n",
 389                         (u32) info->basic_rates);
 390                 /* Basic rateset changed */
 391         }
 392         if (changed & BSS_CHANGED_BEACON_INT) {
 393                 WL_NONE("Beacon Interval:\t%d Implement me\n",
 394                         info->beacon_int);
 395                 /* Beacon interval changed */
 396         }
 397         if (changed & BSS_CHANGED_BSSID) {
 398                 WL_NONE("new BSSID:\taid %d  bss:%pM\n",
 399                         info->aid, info->bssid);
 400                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 401                 /* FIXME: need to store bssid in bsscfg */
 402                 wlc_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET,
 403                                   (struct ether_addr *)info->bssid);
 404         }
 405         if (changed & BSS_CHANGED_BEACON) {
 406                 WL_ERROR("BSS_CHANGED_BEACON\n");
 407                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 408         }
 409         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 410                 WL_ERROR("Beacon enabled:\t%s\n",
 411                          info->enable_beacon ? "True" : "False");
 412                 /* Beaconing should be enabled/disabled (beaconing modes) */
 413         }
 414         return;
 415 }
 416
 417 static void
 418 wl_ops_configure_filter(struct ieee80211_hw *hw,
 419                         unsigned int changed_flags,
 420                         unsigned int *total_flags, u64 multicast)
 421 {
 422         struct wl_info *wl = hw->priv;
 423
 424         changed_flags &= MAC_FILTERS;
 425         *total_flags &= MAC_FILTERS;
 426         if (changed_flags & FIF_PROMISC_IN_BSS)
 427                 WL_ERROR("FIF_PROMISC_IN_BSS\n");
 428         if (changed_flags & FIF_ALLMULTI)
 429                 WL_ERROR("FIF_ALLMULTI\n");
 430         if (changed_flags & FIF_FCSFAIL)
 431                 WL_ERROR("FIF_FCSFAIL\n");
 432         if (changed_flags & FIF_PLCPFAIL)
 433                 WL_ERROR("FIF_PLCPFAIL\n");
 434         if (changed_flags & FIF_CONTROL)
 435                 WL_ERROR("FIF_CONTROL\n");
 436         if (changed_flags & FIF_OTHER_BSS)
 437                 WL_ERROR("FIF_OTHER_BSS\n");
 438         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 439                 WL_NONE("FIF_BCN_PRBRESP_PROMISC\n");
 440                 WL_LOCK(wl);
 441                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
 442                         wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
 443                         wlc_mac_bcn_promisc_change(wl->wlc, 1);
 444                 } else {
 445                         wlc_mac_bcn_promisc_change(wl->wlc, 0);
 446                         wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
 447                 }
 448                 WL_UNLOCK(wl);
 449         }
 450         return;
 451 }
 452
 453 static int
 454 wl_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
 455 {
 456         WL_ERROR("%s: Enter\n", __func__);
 457         return 0;
 458 }
 459
 460 static void wl_ops_sw_scan_start(struct ieee80211_hw *hw)
 461 {
 462         struct wl_info *wl = hw->priv;
 463         WL_NONE("Scan Start\n");
 464         WL_LOCK(wl);
 465         wlc_scan_start(wl->wlc);
 466         WL_UNLOCK(wl);
 467         return;
 468 }
 469
 470 static void wl_ops_sw_scan_complete(struct ieee80211_hw *hw)
 471 {
 472         struct wl_info *wl = hw->priv;
 473         WL_NONE("Scan Complete\n");
 474         WL_LOCK(wl);
 475         wlc_scan_stop(wl->wlc);
 476         WL_UNLOCK(wl);
 477         return;
 478 }
 479
 480 static void wl_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 481 {
 482         WL_ERROR("%s: Enter\n", __func__);
 483         return;
 484 }
 485
 486 static int
 487 wl_ops_get_stats(struct ieee80211_hw *hw,
 488                  struct ieee80211_low_level_stats *stats)
 489 {
 490         WL_ERROR("%s: Enter\n", __func__);
 491         return 0;
 492 }
 493
 494 static int wl_ops_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 495 {
 496         WL_ERROR("%s: Enter\n", __func__);
 497         return 0;
 498 }
 499
 500 static void
 501 wl_ops_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 502                   enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
 503 {
 504         WL_NONE("%s: Enter\n", __func__);
 505         switch (cmd) {
 506         default:
 507                 WL_ERROR("%s: Unknown cmd = %d\n", __func__, cmd);
 508                 break;
 509         }
 510         return;
 511 }
 512
 513 static int
 514 wl_ops_conf_tx(struct ieee80211_hw *hw, u16 queue,
 515                const struct ieee80211_tx_queue_params *params)
 516 {
 517         struct wl_info *wl = hw->priv;
 518
 519         WL_NONE("%s: Enter (WME config)\n", __func__);
 520         WL_NONE("queue %d, txop %d, cwmin %d, cwmax %d, aifs %d\n", queue,
 521                  params->txop, params->cw_min, params->cw_max, params->aifs);
 522
 523         WL_LOCK(wl);
 524         wlc_wme_setparams(wl->wlc, queue, (void *)params, true);
 525         WL_UNLOCK(wl);
 526
 527         return 0;
 528 }
 529
 530 static u64 wl_ops_get_tsf(struct ieee80211_hw *hw)
 531 {
 532         WL_ERROR("%s: Enter\n", __func__);
 533         return 0;
 534 }
 535
 536 static int
 537 wl_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 538            struct ieee80211_sta *sta)
 539 {
 540         struct scb *scb;
 541
 542         int i;
 543         struct wl_info *wl = hw->priv;
 544
 545         /* Init the scb */
 546         scb = (struct scb *)sta->drv_priv;
 547         memset(scb, 0, sizeof(struct scb));
 548         for (i = 0; i < NUMPRIO; i++)
 549                 scb->seqctl[i] = 0xFFFF;
 550         scb->seqctl_nonqos = 0xFFFF;
 551         scb->magic = SCB_MAGIC;
 552
 553         wl->pub->global_scb = scb;
 554         wl->pub->global_ampdu = &(scb->scb_ampdu);
 555         wl->pub->global_ampdu->scb = scb;
 556         wl->pub->global_ampdu->max_pdu = 16;
 557         pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID,
 558                   AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT);
 559
 560         sta->ht_cap.ht_supported = true;
 561         sta->ht_cap.ampdu_factor = AMPDU_RX_FACTOR_64K;
 562         sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY;
 563         sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD |
 564             IEEE80211_HT_CAP_SGI_20 |
 565             IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT;
 566
 567         /* minstrel_ht initiates addBA on our behalf by calling ieee80211_start_tx_ba_session() */
 568         return 0;
 569 }
 570
 571 static int
 572 wl_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 573               struct ieee80211_sta *sta)
 574 {
 575         WL_NONE("%s: Enter\n", __func__);
 576         return 0;
 577 }
 578
 579 static int
 580 wl_ampdu_action(struct ieee80211_hw *hw,
 581                 struct ieee80211_vif *vif,
 582                 enum ieee80211_ampdu_mlme_action action,
 583                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 584 {
 585 #if defined(BCMDBG)
 586         struct scb *scb = (struct scb *)sta->drv_priv;
 587 #endif
 588         struct wl_info *wl = hw->priv;
 589
 590         ASSERT(scb->magic == SCB_MAGIC);
 591         switch (action) {
 592         case IEEE80211_AMPDU_RX_START:
 593                 WL_NONE("%s: action = IEEE80211_AMPDU_RX_START\n", __func__);
 594                 break;
 595         case IEEE80211_AMPDU_RX_STOP:
 596                 WL_NONE("%s: action = IEEE80211_AMPDU_RX_STOP\n", __func__);
 597                 break;
 598         case IEEE80211_AMPDU_TX_START:
 599                 if (!wlc_aggregatable(wl->wlc, tid)) {
 600                         /* WL_ERROR("START: tid %d is not agg' able, return FAILURE to stack\n", tid); */
 601                         return -1;
 602                 }
 603                 /* XXX: Use the starting sequence number provided ... */
 604                 *ssn = 0;
 605                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 606                 break;
 607
 608         case IEEE80211_AMPDU_TX_STOP:
 609                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 610                 break;
 611         case IEEE80211_AMPDU_TX_OPERATIONAL:
 612                 /* Not sure what to do here */
 613                 /* Power save wakeup */
 614                 WL_NONE("%s: action = IEEE80211_AMPDU_TX_OPERATIONAL\n",
 615                         __func__);
 616                 break;
 617         default:
 618                 WL_ERROR("%s: Invalid command, ignoring\n", __func__);
 619         }
 620
 621         return 0;
 622 }
 623
 624 static const struct ieee80211_ops wl_ops = {
 625         .tx = wl_ops_tx,
 626         .start = wl_ops_start,
 627         .stop = wl_ops_stop,
 628         .add_interface = wl_ops_add_interface,
 629         .remove_interface = wl_ops_remove_interface,
 630         .config = wl_ops_config,
 631         .bss_info_changed = wl_ops_bss_info_changed,
 632         .configure_filter = wl_ops_configure_filter,
 633         .set_tim = wl_ops_set_tim,
 634         .sw_scan_start = wl_ops_sw_scan_start,
 635         .sw_scan_complete = wl_ops_sw_scan_complete,
 636         .set_tsf = wl_ops_set_tsf,
 637         .get_stats = wl_ops_get_stats,
 638         .set_rts_threshold = wl_ops_set_rts_threshold,
 639         .sta_notify = wl_ops_sta_notify,
 640         .conf_tx = wl_ops_conf_tx,
 641         .get_tsf = wl_ops_get_tsf,
 642         .sta_add = wl_sta_add,
 643         .sta_remove = wl_sta_remove,
 644         .ampdu_action = wl_ampdu_action,
 645 };
 646
 647 static int wl_set_hint(struct wl_info *wl, char *abbrev)
 648 {
 649         WL_ERROR("%s: Sending country code %c%c to MAC80211\n",
 650                  __func__, abbrev[0], abbrev[1]);
 651         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 652 }
 653
 654 /**
 655  * attach to the WL device.
 656  *
 657  * Attach to the WL device identified by vendor and device parameters.
 658  * regs is a host accessible memory address pointing to WL device registers.
 659  *
 660  * wl_attach is not defined as static because in the case where no bus
 661  * is defined, wl_attach will never be called, and thus, gcc will issue
 662  * a warning that this function is defined but not used if we declare
 663  * it as static.
 664  */
 665 static struct wl_info *wl_attach(u16 vendor, u16 device, unsigned long regs,
 666                             uint bustype, void *btparam, uint irq)
 667 {
 668         struct wl_info *wl;
 669         struct osl_info *osh;
 670         int unit, err;
 671
 672         unsigned long base_addr;
 673         struct ieee80211_hw *hw;
 674         u8 perm[ETH_ALEN];
 675
 676         unit = wl_found;
 677         err = 0;
 678
 679         if (unit < 0) {
 680                 WL_ERROR("wl%d: unit number overflow, exiting\n", unit);
 681                 return NULL;
 682         }
 683
 684         osh = osl_attach(btparam, bustype);
 685         ASSERT(osh);
 686
 687         /* allocate private info */
 688         hw = pci_get_drvdata(btparam);  /* btparam == pdev */
 689         wl = hw->priv;
 690         ASSERT(wl);
 691
 692         wl->osh = osh;
 693         atomic_set(&wl->callbacks, 0);
 694
 695         /* setup the bottom half handler */
 696         tasklet_init(&wl->tasklet, wl_dpc, (unsigned long) wl);
 697
 698
 699
 700         base_addr = regs;
 701
 702         if (bustype == PCI_BUS) {
 703                 wl->piomode = false;
 704         } else if (bustype == RPC_BUS) {
 705                 /* Do nothing */
 706         } else {
 707                 bustype = PCI_BUS;
 708                 WL_TRACE("force to PCI\n");
 709         }
 710         wl->bcm_bustype = bustype;
 711
 712         wl->regsva = ioremap_nocache(base_addr, PCI_BAR0_WINSZ);
 713         if (wl->regsva == NULL) {
 714                 WL_ERROR("wl%d: ioremap() failed\n", unit);
 715                 goto fail;
 716         }
 717         spin_lock_init(&wl->lock);
 718         spin_lock_init(&wl->isr_lock);
 719
 720         /* prepare ucode */
 721         if (wl_request_fw(wl, (struct pci_dev *)btparam)) {
 722                 printf("%s: Failed to find firmware usually in %s\n",
 723                         KBUILD_MODNAME, "/lib/firmware/brcm");
 724                 wl_release_fw(wl);
 725                 wl_remove((struct pci_dev *)btparam);
 726                 goto fail1;
 727         }
 728
 729         /* common load-time initialization */
 730         wl->wlc = wlc_attach((void *)wl, vendor, device, unit, wl->piomode, osh,
 731                              wl->regsva, wl->bcm_bustype, btparam, &err);
 732         wl_release_fw(wl);
 733         if (!wl->wlc) {
 734                 printf("%s: wlc_attach() failed with code %d\n",
 735                         KBUILD_MODNAME, err);
 736                 goto fail;
 737         }
 738         wl->pub = wlc_pub(wl->wlc);
 739
 740         wl->pub->ieee_hw = hw;
 741         ASSERT(wl->pub->ieee_hw);
 742         ASSERT(wl->pub->ieee_hw->priv == wl);
 743
 744
 745         if (wlc_iovar_setint(wl->wlc, "mpc", 0)) {
 746                 WL_ERROR("wl%d: Error setting MPC variable to 0\n", unit);
 747         }
 748
 749         /* register our interrupt handler */
 750         if (request_irq(irq, wl_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
 751                 WL_ERROR("wl%d: request_irq() failed\n", unit);
 752                 goto fail;
 753         }
 754         wl->irq = irq;
 755
 756         /* register module */
 757         wlc_module_register(wl->pub, NULL, "linux", wl, NULL, wl_linux_watchdog,
 758                             NULL);
 759
 760         if (ieee_hw_init(hw)) {
 761                 WL_ERROR("wl%d: %s: ieee_hw_init failed!\n", unit, __func__);
 762                 goto fail;
 763         }
 764
 765         bcopy(&wl->pub->cur_etheraddr, perm, ETH_ALEN);
 766         ASSERT(is_valid_ether_addr(perm));
 767         SET_IEEE80211_PERM_ADDR(hw, perm);
 768
 769         err = ieee80211_register_hw(hw);
 770         if (err) {
 771                 WL_ERROR("%s: ieee80211_register_hw failed, status %d\n",
 772                          __func__, err);
 773         }
 774
 775         if (wl->pub->srom_ccode[0])
 776                 err = wl_set_hint(wl, wl->pub->srom_ccode);
 777         else
 778                 err = wl_set_hint(wl, "US");
 779         if (err) {
 780                 WL_ERROR("%s: regulatory_hint failed, status %d\n",
 781                          __func__, err);
 782         }
 783         WL_ERROR("wl%d: Broadcom BCM43xx 802.11 MAC80211 Driver (" PHY_VERSION_STR ")",
 784                  unit);
 785
 786 #ifdef BCMDBG
 787         printf(" (Compiled at " __TIME__ " on " __DATE__ ")");
 788 #endif                          /* BCMDBG */
 789         printf("\n");
 790
 791         wl_found++;
 792         return wl;
 793
 794 fail:
 795         wl_free(wl);
 796 fail1:
 797         return NULL;
 798 }
 799
 800
 801
 802 #define CHAN2GHZ(channel, freqency, chflags)  { \
 803         .band = IEEE80211_BAND_2GHZ, \
 804         .center_freq = (freqency), \
 805         .hw_value = (channel), \
 806         .flags = chflags, \
 807         .max_antenna_gain = 0, \
 808         .max_power = 19, \
 809 }
 810
 811 static struct ieee80211_channel wl_2ghz_chantable[] = {
 812         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 813         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 814         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 815         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 816         CHAN2GHZ(5, 2432, 0),
 817         CHAN2GHZ(6, 2437, 0),
 818         CHAN2GHZ(7, 2442, 0),
 819         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 820         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 821         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 822         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 823         CHAN2GHZ(12, 2467,
 824                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 825                  IEEE80211_CHAN_NO_HT40PLUS),
 826         CHAN2GHZ(13, 2472,
 827                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 828                  IEEE80211_CHAN_NO_HT40PLUS),
 829         CHAN2GHZ(14, 2484,
 830                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 831                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 832 };
 833
 834 #define CHAN5GHZ(channel, chflags)  { \
 835         .band = IEEE80211_BAND_5GHZ, \
 836         .center_freq = 5000 + 5*(channel), \
 837         .hw_value = (channel), \
 838         .flags = chflags, \
 839         .max_antenna_gain = 0, \
 840         .max_power = 21, \
 841 }
 842
 843 static struct ieee80211_channel wl_5ghz_nphy_chantable[] = {
 844         /* UNII-1 */
 845         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 846         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 847         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 848         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 849         /* UNII-2 */
 850         CHAN5GHZ(52,
 851                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 852                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 853         CHAN5GHZ(56,
 854                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 855                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 856         CHAN5GHZ(60,
 857                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 858                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 859         CHAN5GHZ(64,
 860                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 861                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 862         /* MID */
 863         CHAN5GHZ(100,
 864                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 865                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 866         CHAN5GHZ(104,
 867                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 868                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 869         CHAN5GHZ(108,
 870                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 871                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 872         CHAN5GHZ(112,
 873                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 874                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 875         CHAN5GHZ(116,
 876                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 877                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 878         CHAN5GHZ(120,
 879                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 880                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 881         CHAN5GHZ(124,
 882                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 883                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 884         CHAN5GHZ(128,
 885                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 886                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 887         CHAN5GHZ(132,
 888                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 889                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 890         CHAN5GHZ(136,
 891                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 892                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 893         CHAN5GHZ(140,
 894                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 895                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 896                  IEEE80211_CHAN_NO_HT40MINUS),
 897         /* UNII-3 */
 898         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 899         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 900         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 901         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 902         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 903 };
 904
 905 #define RATE(rate100m, _flags) { \
 906         .bitrate = (rate100m), \
 907         .flags = (_flags), \
 908         .hw_value = (rate100m / 5), \
 909 }
 910
 911 static struct ieee80211_rate wl_legacy_ratetable[] = {
 912         RATE(10, 0),
 913         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 914         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 915         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 916         RATE(60, 0),
 917         RATE(90, 0),
 918         RATE(120, 0),
 919         RATE(180, 0),
 920         RATE(240, 0),
 921         RATE(360, 0),
 922         RATE(480, 0),
 923         RATE(540, 0),
 924 };
 925
 926 static struct ieee80211_supported_band wl_band_2GHz_nphy = {
 927         .band = IEEE80211_BAND_2GHZ,
 928         .channels = wl_2ghz_chantable,
 929         .n_channels = ARRAY_SIZE(wl_2ghz_chantable),
 930         .bitrates = wl_legacy_ratetable,
 931         .n_bitrates = ARRAY_SIZE(wl_legacy_ratetable),
 932         .ht_cap = {
 933                    /* from include/linux/ieee80211.h */
 934                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 935                    IEEE80211_HT_CAP_SGI_20 |
 936                    IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT,
 937                    .ht_supported = true,
 938                    .ampdu_factor = AMPDU_RX_FACTOR_64K,
 939                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 940                    .mcs = {
 941                            /* placeholders for now */
 942                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 943                            .rx_highest = 500,
 944                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 945                    }
 946 };
 947
 948 static struct ieee80211_supported_band wl_band_5GHz_nphy = {
 949         .band = IEEE80211_BAND_5GHZ,
 950         .channels = wl_5ghz_nphy_chantable,
 951         .n_channels = ARRAY_SIZE(wl_5ghz_nphy_chantable),
 952         .bitrates = wl_legacy_ratetable + 4,
 953         .n_bitrates = ARRAY_SIZE(wl_legacy_ratetable) - 4,
 954         .ht_cap = {
 955                    /* use IEEE80211_HT_CAP_* from include/linux/ieee80211.h */
 956                    .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 */
 957                    .ht_supported = true,
 958                    .ampdu_factor = AMPDU_RX_FACTOR_64K,
 959                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 960                    .mcs = {
 961                            /* placeholders for now */
 962                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 963                            .rx_highest = 500,
 964                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 965                    }
 966 };
 967
 968 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 969 {
 970         struct wl_info *wl = HW_TO_WL(hw);
 971         int has_5g;
 972         char phy_list[4];
 973
 974         has_5g = 0;
 975
 976         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 977         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 978
 979         if (wlc_get(wl->wlc, WLC_GET_PHYLIST, (int *)&phy_list) < 0) {
 980                 WL_ERROR("Phy list failed\n");
 981         }
 982         WL_NONE("%s: phylist = %c\n", __func__, phy_list[0]);
 983
 984         if (phy_list[0] == 'n' || phy_list[0] == 'c') {
 985                 if (phy_list[0] == 'c') {
 986                         /* Single stream */
 987                         wl_band_2GHz_nphy.ht_cap.mcs.rx_mask[1] = 0;
 988                         wl_band_2GHz_nphy.ht_cap.mcs.rx_highest = 72;
 989                 }
 990                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl_band_2GHz_nphy;
 991         } else {
 992                 BUG();
 993                 return -1;
 994         }
 995
 996         /* Assume all bands use the same phy.  True for 11n devices. */
 997         if (NBANDS_PUB(wl->pub) > 1) {
 998                 has_5g++;
 999                 if (phy_list[0] == 'n' || phy_list[0] == 'c') {
1000                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1001                             &wl_band_5GHz_nphy;
1002                 } else {
1003                         return -1;
1004                 }
1005         }
1006
1007         WL_NONE("%s: 2ghz = %d, 5ghz = %d\n", __func__, 1, has_5g);
1008
1009         return 0;
1010 }
1011
1012 static int ieee_hw_init(struct ieee80211_hw *hw)
1013 {
1014         hw->flags = IEEE80211_HW_SIGNAL_DBM
1015             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1016             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1017             | IEEE80211_HW_AMPDU_AGGREGATION;
1018
1019         hw->extra_tx_headroom = wlc_get_header_len();
1020         /* FIXME: should get this from wlc->machwcap */
1021         hw->queues = 4;
1022         /* FIXME: this doesn't seem to be used properly in minstrel_ht.
1023          * mac80211/status.c:ieee80211_tx_status() checks this value,
1024          * but mac80211/rc80211_minstrel_ht.c:minstrel_ht_get_rate()
1025          * appears to always set 3 rates
1026          */
1027         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1028
1029         hw->channel_change_time = 7 * 1000;     /* channel change time is dependant on chip and band  */
1030         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1031
1032         hw->rate_control_algorithm = "minstrel_ht";
1033
1034         hw->sta_data_size = sizeof(struct scb);
1035         return ieee_hw_rate_init(hw);
1036 }
1037
1038 /**
1039  * determines if a device is a WL device, and if so, attaches it.
1040  *
1041  * This function determines if a device pointed to by pdev is a WL device,
1042  * and if so, performs a wl_attach() on it.
1043  *
1044  */
1045 int __devinit
1046 wl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1047 {
1048         int rc;
1049         struct wl_info *wl;
1050         struct ieee80211_hw *hw;
1051         u32 val;
1052
1053         ASSERT(pdev);
1054
1055         WL_TRACE("%s: bus %d slot %d func %d irq %d\n",
1056                  __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1057                  PCI_FUNC(pdev->devfn), pdev->irq);
1058
1059         if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1060             (((pdev->device & 0xff00) != 0x4300) &&
1061              ((pdev->device & 0xff00) != 0x4700) &&
1062              ((pdev->device < 43000) || (pdev->device > 43999))))
1063                 return -ENODEV;
1064
1065         rc = pci_enable_device(pdev);
1066         if (rc) {
1067                 WL_ERROR("%s: Cannot enable device %d-%d_%d\n",
1068                          __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1069                          PCI_FUNC(pdev->devfn));
1070                 return -ENODEV;
1071         }
1072         pci_set_master(pdev);
1073
1074         pci_read_config_dword(pdev, 0x40, &val);
1075         if ((val & 0x0000ff00) != 0)
1076                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1077
1078         hw = ieee80211_alloc_hw(sizeof(struct wl_info), &wl_ops);
1079         if (!hw) {
1080                 WL_ERROR("%s: ieee80211_alloc_hw failed\n", __func__);
1081                 rc = -ENOMEM;
1082                 goto err_1;
1083         }
1084
1085         SET_IEEE80211_DEV(hw, &pdev->dev);
1086
1087         pci_set_drvdata(pdev, hw);
1088
1089         memset(hw->priv, 0, sizeof(*wl));
1090
1091         wl = wl_attach(pdev->vendor, pdev->device, pci_resource_start(pdev, 0),
1092                        PCI_BUS, pdev, pdev->irq);
1093
1094         if (!wl) {
1095                 WL_ERROR("%s: %s: wl_attach failed!\n",
1096                          KBUILD_MODNAME, __func__);
1097                 return -ENODEV;
1098         }
1099         return 0;
1100  err_1:
1101         WL_ERROR("%s: err_1: Major hoarkage\n", __func__);
1102         return 0;
1103 }
1104
1105 static int wl_suspend(struct pci_dev *pdev, pm_message_t state)
1106 {
1107         struct wl_info *wl;
1108         struct ieee80211_hw *hw;
1109
1110         WL_TRACE("wl: wl_suspend\n");
1111
1112         hw = pci_get_drvdata(pdev);
1113         wl = HW_TO_WL(hw);
1114         if (!wl) {
1115                 WL_ERROR("wl: wl_suspend: pci_get_drvdata failed\n");
1116                 return -ENODEV;
1117         }
1118
1119         /* only need to flag hw is down for proper resume */
1120         WL_LOCK(wl);
1121         wl->pub->hw_up = false;
1122         WL_UNLOCK(wl);
1123
1124         pci_save_state(pdev);
1125         pci_disable_device(pdev);
1126         return pci_set_power_state(pdev, PCI_D3hot);
1127 }
1128
1129 static int wl_resume(struct pci_dev *pdev)
1130 {
1131         struct wl_info *wl;
1132         struct ieee80211_hw *hw;
1133         int err = 0;
1134         u32 val;
1135
1136         WL_TRACE("wl: wl_resume\n");
1137         hw = pci_get_drvdata(pdev);
1138         wl = HW_TO_WL(hw);
1139         if (!wl) {
1140                 WL_ERROR("wl: wl_resume: pci_get_drvdata failed\n");
1141                 return -ENODEV;
1142         }
1143
1144         err = pci_set_power_state(pdev, PCI_D0);
1145         if (err)
1146                 return err;
1147
1148         pci_restore_state(pdev);
1149
1150         err = pci_enable_device(pdev);
1151         if (err)
1152                 return err;
1153
1154         pci_set_master(pdev);
1155
1156         pci_read_config_dword(pdev, 0x40, &val);
1157         if ((val & 0x0000ff00) != 0)
1158                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1159
1160         /*
1161         *  done. driver will be put in up state
1162         *  in wl_ops_add_interface() call.
1163         */
1164         return err;
1165 }
1166
1167 static void wl_remove(struct pci_dev *pdev)
1168 {
1169         struct wl_info *wl;
1170         struct ieee80211_hw *hw;
1171
1172         hw = pci_get_drvdata(pdev);
1173         wl = HW_TO_WL(hw);
1174         if (!wl) {
1175                 WL_ERROR("wl: wl_remove: pci_get_drvdata failed\n");
1176                 return;
1177         }
1178         if (!wlc_chipmatch(pdev->vendor, pdev->device)) {
1179                 WL_ERROR("wl: wl_remove: wlc_chipmatch failed\n");
1180                 return;
1181         }
1182         if (wl->wlc) {
1183                 ieee80211_unregister_hw(hw);
1184                 WL_LOCK(wl);
1185                 wl_down(wl);
1186                 WL_UNLOCK(wl);
1187                 WL_NONE("%s: Down\n", __func__);
1188         }
1189         pci_disable_device(pdev);
1190
1191         wl_free(wl);
1192
1193         pci_set_drvdata(pdev, NULL);
1194         ieee80211_free_hw(hw);
1195 }
1196
1197 static struct pci_driver wl_pci_driver = {
1198         .name = "brcm80211",
1199         .probe = wl_pci_probe,
1200         .suspend = wl_suspend,
1201         .resume = wl_resume,
1202         .remove = __devexit_p(wl_remove),
1203         .id_table = wl_id_table,
1204 };
1205
1206 /**
1207  * This is the main entry point for the WL driver.
1208  *
1209  * This function determines if a device pointed to by pdev is a WL device,
1210  * and if so, performs a wl_attach() on it.
1211  *
1212  */
1213 static int __init wl_module_init(void)
1214 {
1215         int error = -ENODEV;
1216
1217 #ifdef BCMDBG
1218         if (msglevel != 0xdeadbeef)
1219                 wl_msg_level = msglevel;
1220         else {
1221                 char *var = getvar(NULL, "wl_msglevel");
1222                 if (var)
1223                         wl_msg_level = simple_strtoul(var, NULL, 0);
1224         }
1225         {
1226                 extern u32 phyhal_msg_level;
1227
1228                 if (phymsglevel != 0xdeadbeef)
1229                         phyhal_msg_level = phymsglevel;
1230                 else {
1231                         char *var = getvar(NULL, "phy_msglevel");
1232                         if (var)
1233                                 phyhal_msg_level = simple_strtoul(var, NULL, 0);
1234                 }
1235         }
1236 #endif                          /* BCMDBG */
1237
1238         error = pci_register_driver(&wl_pci_driver);
1239         if (!error)
1240                 return 0;
1241
1242
1243
1244         return error;
1245 }
1246
1247 /**
1248  * This function unloads the WL driver from the system.
1249  *
1250  * This function unconditionally unloads the WL driver module from the
1251  * system.
1252  *
1253  */
1254 static void __exit wl_module_exit(void)
1255 {
1256         pci_unregister_driver(&wl_pci_driver);
1257
1258 }
1259
1260 module_init(wl_module_init);
1261 module_exit(wl_module_exit);
1262
1263 /**
1264  * This function frees the WL per-device resources.
1265  *
1266  * This function frees resources owned by the WL device pointed to
1267  * by the wl parameter.
1268  *
1269  */
1270 void wl_free(struct wl_info *wl)
1271 {
1272         wl_timer_t *t, *next;
1273         struct osl_info *osh;
1274
1275         ASSERT(wl);
1276         /* free ucode data */
1277         if (wl->fw.fw_cnt)
1278                 wl_ucode_data_free();
1279         if (wl->irq)
1280                 free_irq(wl->irq, wl);
1281
1282         /* kill dpc */
1283         tasklet_kill(&wl->tasklet);
1284
1285         if (wl->pub) {
1286                 wlc_module_unregister(wl->pub, "linux", wl);
1287         }
1288
1289         /* free common resources */
1290         if (wl->wlc) {
1291                 wlc_detach(wl->wlc);
1292                 wl->wlc = NULL;
1293                 wl->pub = NULL;
1294         }
1295
1296         /* virtual interface deletion is deferred so we cannot spinwait */
1297
1298         /* wait for all pending callbacks to complete */
1299         while (atomic_read(&wl->callbacks) > 0)
1300                 schedule();
1301
1302         /* free timers */
1303         for (t = wl->timers; t; t = next) {
1304                 next = t->next;
1305 #ifdef BCMDBG
1306                 if (t->name)
1307                         kfree(t->name);
1308 #endif
1309                 kfree(t);
1310         }
1311
1312         osh = wl->osh;
1313
1314         /*
1315          * unregister_netdev() calls get_stats() which may read chip registers
1316          * so we cannot unmap the chip registers until after calling unregister_netdev() .
1317          */
1318         if (wl->regsva && wl->bcm_bustype != SDIO_BUS &&
1319             wl->bcm_bustype != JTAG_BUS) {
1320                 iounmap((void *)wl->regsva);
1321         }
1322         wl->regsva = NULL;
1323
1324
1325         osl_detach(osh);
1326 }
1327
1328 /* transmit a packet */
1329 static int BCMFASTPATH wl_start(struct sk_buff *skb, struct wl_info *wl)
1330 {
1331         if (!wl)
1332                 return -ENETDOWN;
1333
1334         return wl_start_int(wl, WL_TO_HW(wl), skb);
1335 }
1336
1337 static int BCMFASTPATH
1338 wl_start_int(struct wl_info *wl, struct ieee80211_hw *hw, struct sk_buff *skb)
1339 {
1340         wlc_sendpkt_mac80211(wl->wlc, skb, hw);
1341         return NETDEV_TX_OK;
1342 }
1343
1344 void wl_txflowcontrol(struct wl_info *wl, struct wl_if *wlif, bool state,
1345                       int prio)
1346 {
1347         WL_ERROR("Shouldn't be here %s\n", __func__);
1348 }
1349
1350 void wl_init(struct wl_info *wl)
1351 {
1352         WL_TRACE("wl%d: wl_init\n", wl->pub->unit);
1353
1354         wl_reset(wl);
1355
1356         wlc_init(wl->wlc);
1357 }
1358
1359 uint wl_reset(struct wl_info *wl)
1360 {
1361         WL_TRACE("wl%d: wl_reset\n", wl->pub->unit);
1362
1363         wlc_reset(wl->wlc);
1364
1365         /* dpc will not be rescheduled */
1366         wl->resched = 0;
1367
1368         return 0;
1369 }
1370
1371 /*
1372  * These are interrupt on/off entry points. Disable interrupts
1373  * during interrupt state transition.
1374  */
1375 void BCMFASTPATH wl_intrson(struct wl_info *wl)
1376 {
1377         unsigned long flags;
1378
1379         INT_LOCK(wl, flags);
1380         wlc_intrson(wl->wlc);
1381         INT_UNLOCK(wl, flags);
1382 }
1383
1384 bool wl_alloc_dma_resources(struct wl_info *wl, uint addrwidth)
1385 {
1386         return true;
1387 }
1388
1389 u32 BCMFASTPATH wl_intrsoff(struct wl_info *wl)
1390 {
1391         unsigned long flags;
1392         u32 status;
1393
1394         INT_LOCK(wl, flags);
1395         status = wlc_intrsoff(wl->wlc);
1396         INT_UNLOCK(wl, flags);
1397         return status;
1398 }
1399
1400 void wl_intrsrestore(struct wl_info *wl, u32 macintmask)
1401 {
1402         unsigned long flags;
1403
1404         INT_LOCK(wl, flags);
1405         wlc_intrsrestore(wl->wlc, macintmask);
1406         INT_UNLOCK(wl, flags);
1407 }
1408
1409 int wl_up(struct wl_info *wl)
1410 {
1411         int error = 0;
1412
1413         if (wl->pub->up)
1414                 return 0;
1415
1416         error = wlc_up(wl->wlc);
1417
1418         return error;
1419 }
1420
1421 void wl_down(struct wl_info *wl)
1422 {
1423         uint callbacks, ret_val = 0;
1424
1425         /* call common down function */
1426         ret_val = wlc_down(wl->wlc);
1427         callbacks = atomic_read(&wl->callbacks) - ret_val;
1428
1429         /* wait for down callbacks to complete */
1430         WL_UNLOCK(wl);
1431
1432         /* For HIGH_only driver, it's important to actually schedule other work,
1433          * not just spin wait since everything runs at schedule level
1434          */
1435         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1436
1437         WL_LOCK(wl);
1438 }
1439
1440 irqreturn_t BCMFASTPATH wl_isr(int irq, void *dev_id)
1441 {
1442         struct wl_info *wl;
1443         bool ours, wantdpc;
1444         unsigned long flags;
1445
1446         wl = (struct wl_info *) dev_id;
1447
1448         WL_ISRLOCK(wl, flags);
1449
1450         /* call common first level interrupt handler */
1451         ours = wlc_isr(wl->wlc, &wantdpc);
1452         if (ours) {
1453                 /* if more to do... */
1454                 if (wantdpc) {
1455
1456                         /* ...and call the second level interrupt handler */
1457                         /* schedule dpc */
1458                         ASSERT(wl->resched == false);
1459                         tasklet_schedule(&wl->tasklet);
1460                 }
1461         }
1462
1463         WL_ISRUNLOCK(wl, flags);
1464
1465         return IRQ_RETVAL(ours);
1466 }
1467
1468 static void BCMFASTPATH wl_dpc(unsigned long data)
1469 {
1470         struct wl_info *wl;
1471
1472         wl = (struct wl_info *) data;
1473
1474         WL_LOCK(wl);
1475
1476         /* call the common second level interrupt handler */
1477         if (wl->pub->up) {
1478                 if (wl->resched) {
1479                         unsigned long flags;
1480
1481                         INT_LOCK(wl, flags);
1482                         wlc_intrsupd(wl->wlc);
1483                         INT_UNLOCK(wl, flags);
1484                 }
1485
1486                 wl->resched = wlc_dpc(wl->wlc, true);
1487         }
1488
1489         /* wlc_dpc() may bring the driver down */
1490         if (!wl->pub->up)
1491                 goto done;
1492
1493         /* re-schedule dpc */
1494         if (wl->resched)
1495                 tasklet_schedule(&wl->tasklet);
1496         else {
1497                 /* re-enable interrupts */
1498                 wl_intrson(wl);
1499         }
1500
1501  done:
1502         WL_UNLOCK(wl);
1503 }
1504
1505 static void wl_link_up(struct wl_info *wl, char *ifname)
1506 {
1507         WL_ERROR("wl%d: link up (%s)\n", wl->pub->unit, ifname);
1508 }
1509
1510 static void wl_link_down(struct wl_info *wl, char *ifname)
1511 {
1512         WL_ERROR("wl%d: link down (%s)\n", wl->pub->unit, ifname);
1513 }
1514
1515 void wl_event(struct wl_info *wl, char *ifname, wlc_event_t *e)
1516 {
1517
1518         switch (e->event.event_type) {
1519         case WLC_E_LINK:
1520         case WLC_E_NDIS_LINK:
1521                 if (e->event.flags & WLC_EVENT_MSG_LINK)
1522                         wl_link_up(wl, ifname);
1523                 else
1524                         wl_link_down(wl, ifname);
1525                 break;
1526         case WLC_E_RADIO:
1527                 break;
1528         }
1529 }
1530
1531 static void wl_timer(unsigned long data)
1532 {
1533         _wl_timer((wl_timer_t *) data);
1534 }
1535
1536 static void _wl_timer(wl_timer_t *t)
1537 {
1538         WL_LOCK(t->wl);
1539
1540         if (t->set) {
1541                 if (t->periodic) {
1542                         t->timer.expires = jiffies + t->ms * HZ / 1000;
1543                         atomic_inc(&t->wl->callbacks);
1544                         add_timer(&t->timer);
1545                         t->set = true;
1546                 } else
1547                         t->set = false;
1548
1549                 t->fn(t->arg);
1550         }
1551
1552         atomic_dec(&t->wl->callbacks);
1553
1554         WL_UNLOCK(t->wl);
1555 }
1556
1557 wl_timer_t *wl_init_timer(struct wl_info *wl, void (*fn) (void *arg), void *arg,
1558                           const char *name)
1559 {
1560         wl_timer_t *t;
1561
1562         t = kmalloc(sizeof(wl_timer_t), GFP_ATOMIC);
1563         if (!t) {
1564                 WL_ERROR("wl%d: wl_init_timer: out of memory\n", wl->pub->unit);
1565                 return 0;
1566         }
1567
1568         memset(t, 0, sizeof(wl_timer_t));
1569
1570         init_timer(&t->timer);
1571         t->timer.data = (unsigned long) t;
1572         t->timer.function = wl_timer;
1573         t->wl = wl;
1574         t->fn = fn;
1575         t->arg = arg;
1576         t->next = wl->timers;
1577         wl->timers = t;
1578
1579 #ifdef BCMDBG
1580         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1581         if (t->name)
1582                 strcpy(t->name, name);
1583 #endif
1584
1585         return t;
1586 }
1587
1588 /* BMAC_NOTE: Add timer adds only the kernel timer since it's going to be more accurate
1589  * as well as it's easier to make it periodic
1590  */
1591 void wl_add_timer(struct wl_info *wl, wl_timer_t *t, uint ms, int periodic)
1592 {
1593 #ifdef BCMDBG
1594         if (t->set) {
1595                 WL_ERROR("%s: Already set. Name: %s, per %d\n",
1596                          __func__, t->name, periodic);
1597         }
1598 #endif
1599         ASSERT(!t->set);
1600
1601         t->ms = ms;
1602         t->periodic = (bool) periodic;
1603         t->set = true;
1604         t->timer.expires = jiffies + ms * HZ / 1000;
1605
1606         atomic_inc(&wl->callbacks);
1607         add_timer(&t->timer);
1608 }
1609
1610 /* return true if timer successfully deleted, false if still pending */
1611 bool wl_del_timer(struct wl_info *wl, wl_timer_t *t)
1612 {
1613         if (t->set) {
1614                 t->set = false;
1615                 if (!del_timer(&t->timer)) {
1616                         return false;
1617                 }
1618                 atomic_dec(&wl->callbacks);
1619         }
1620
1621         return true;
1622 }
1623
1624 void wl_free_timer(struct wl_info *wl, wl_timer_t *t)
1625 {
1626         wl_timer_t *tmp;
1627
1628         /* delete the timer in case it is active */
1629         wl_del_timer(wl, t);
1630
1631         if (wl->timers == t) {
1632                 wl->timers = wl->timers->next;
1633 #ifdef BCMDBG
1634                 if (t->name)
1635                         kfree(t->name);
1636 #endif
1637                 kfree(t);
1638                 return;
1639
1640         }
1641
1642         tmp = wl->timers;
1643         while (tmp) {
1644                 if (tmp->next == t) {
1645                         tmp->next = t->next;
1646 #ifdef BCMDBG
1647                         if (t->name)
1648                                 kfree(t->name);
1649 #endif
1650                         kfree(t);
1651                         return;
1652                 }
1653                 tmp = tmp->next;
1654         }
1655
1656 }
1657
1658 static int wl_linux_watchdog(void *ctx)
1659 {
1660         struct wl_info *wl = (struct wl_info *) ctx;
1661         struct net_device_stats *stats = NULL;
1662         uint id;
1663         /* refresh stats */
1664         if (wl->pub->up) {
1665                 ASSERT(wl->stats_id < 2);
1666
1667                 id = 1 - wl->stats_id;
1668
1669                 stats = &wl->stats_watchdog[id];
1670                 stats->rx_packets = WLCNTVAL(wl->pub->_cnt->rxframe);
1671                 stats->tx_packets = WLCNTVAL(wl->pub->_cnt->txframe);
1672                 stats->rx_bytes = WLCNTVAL(wl->pub->_cnt->rxbyte);
1673                 stats->tx_bytes = WLCNTVAL(wl->pub->_cnt->txbyte);
1674                 stats->rx_errors = WLCNTVAL(wl->pub->_cnt->rxerror);
1675                 stats->tx_errors = WLCNTVAL(wl->pub->_cnt->txerror);
1676                 stats->collisions = 0;
1677
1678                 stats->rx_length_errors = 0;
1679                 stats->rx_over_errors = WLCNTVAL(wl->pub->_cnt->rxoflo);
1680                 stats->rx_crc_errors = WLCNTVAL(wl->pub->_cnt->rxcrc);
1681                 stats->rx_frame_errors = 0;
1682                 stats->rx_fifo_errors = WLCNTVAL(wl->pub->_cnt->rxoflo);
1683                 stats->rx_missed_errors = 0;
1684
1685                 stats->tx_fifo_errors = WLCNTVAL(wl->pub->_cnt->txuflo);
1686
1687                 wl->stats_id = id;
1688
1689         }
1690
1691         return 0;
1692 }
1693
1694 struct wl_fw_hdr {
1695         u32 offset;
1696         u32 len;
1697         u32 idx;
1698 };
1699
1700 char *wl_firmwares[WL_MAX_FW] = {
1701         "brcm/bcm43xx",
1702         NULL
1703 };
1704
1705 int wl_ucode_init_buf(struct wl_info *wl, void **pbuf, u32 idx)
1706 {
1707         int i, entry;
1708         const u8 *pdata;
1709         struct wl_fw_hdr *hdr;
1710         for (i = 0; i < wl->fw.fw_cnt; i++) {
1711                 hdr = (struct wl_fw_hdr *)wl->fw.fw_hdr[i]->data;
1712                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1713                      entry++, hdr++) {
1714                         if (hdr->idx == idx) {
1715                                 pdata = wl->fw.fw_bin[i]->data + hdr->offset;
1716                                 *pbuf = kmalloc(hdr->len, GFP_ATOMIC);
1717                                 if (*pbuf == NULL) {
1718                                         printf("fail to alloc %d bytes\n",
1719                                                hdr->len);
1720                                 }
1721                                 bcopy(pdata, *pbuf, hdr->len);
1722                                 return 0;
1723                         }
1724                 }
1725         }
1726         printf("ERROR: ucode buf tag:%d can not be found!\n", idx);
1727         *pbuf = NULL;
1728         return -1;
1729 }
1730
1731 int wl_ucode_init_uint(struct wl_info *wl, u32 *data, u32 idx)
1732 {
1733         int i, entry;
1734         const u8 *pdata;
1735         struct wl_fw_hdr *hdr;
1736         for (i = 0; i < wl->fw.fw_cnt; i++) {
1737                 hdr = (struct wl_fw_hdr *)wl->fw.fw_hdr[i]->data;
1738                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1739                      entry++, hdr++) {
1740                         if (hdr->idx == idx) {
1741                                 pdata = wl->fw.fw_bin[i]->data + hdr->offset;
1742                                 ASSERT(hdr->len == 4);
1743                                 *data = *((u32 *) pdata);
1744                                 return 0;
1745                         }
1746                 }
1747         }
1748         printf("ERROR: ucode tag:%d can not be found!\n", idx);
1749         return -1;
1750 }
1751
1752 static int wl_request_fw(struct wl_info *wl, struct pci_dev *pdev)
1753 {
1754         int status;
1755         struct device *device = &pdev->dev;
1756         char fw_name[100];
1757         int i;
1758
1759         memset((void *)&wl->fw, 0, sizeof(struct wl_firmware));
1760         for (i = 0; i < WL_MAX_FW; i++) {
1761                 if (wl_firmwares[i] == NULL)
1762                         break;
1763                 sprintf(fw_name, "%s-%d.fw", wl_firmwares[i],
1764                         UCODE_LOADER_API_VER);
1765                 WL_NONE("request fw %s\n", fw_name);
1766                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
1767                 if (status) {
1768                         printf("%s: fail to load firmware %s\n",
1769                                 KBUILD_MODNAME, fw_name);
1770                         wl_release_fw(wl);
1771                         return status;
1772                 }
1773                 WL_NONE("request fw %s\n", fw_name);
1774                 sprintf(fw_name, "%s_hdr-%d.fw", wl_firmwares[i],
1775                         UCODE_LOADER_API_VER);
1776                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
1777                 if (status) {
1778                         printf("%s: fail to load firmware %s\n",
1779                                 KBUILD_MODNAME, fw_name);
1780                         wl_release_fw(wl);
1781                         return status;
1782                 }
1783                 wl->fw.hdr_num_entries[i] =
1784                     wl->fw.fw_hdr[i]->size / (sizeof(struct wl_fw_hdr));
1785                 WL_NONE("request fw %s find: %d entries\n",
1786                         fw_name, wl->fw.hdr_num_entries[i]);
1787         }
1788         wl->fw.fw_cnt = i;
1789         return wl_ucode_data_init(wl);
1790 }
1791
1792 void wl_ucode_free_buf(void *p)
1793 {
1794         kfree(p);
1795 }
1796
1797 static void wl_release_fw(struct wl_info *wl)
1798 {
1799         int i;
1800         for (i = 0; i < WL_MAX_FW; i++) {
1801                 release_firmware(wl->fw.fw_bin[i]);
1802                 release_firmware(wl->fw.fw_hdr[i]);
1803         }
1804 }
1805
1806
1807 /*
1808  * checks validity of all firmware images loaded from user space
1809  */
1810 int wl_check_firmwares(struct wl_info *wl)
1811 {
1812         int i;
1813         int entry;
1814         int rc = 0;
1815         const struct firmware *fw;
1816         const struct firmware *fw_hdr;
1817         struct wl_fw_hdr *ucode_hdr;
1818         for (i = 0; i < WL_MAX_FW && rc == 0; i++) {
1819                 fw =  wl->fw.fw_bin[i];
1820                 fw_hdr = wl->fw.fw_hdr[i];
1821                 if (fw == NULL && fw_hdr == NULL) {
1822                         break;
1823                 } else if (fw == NULL || fw_hdr == NULL) {
1824                         WL_ERROR("%s: invalid bin/hdr fw\n", __func__);
1825                         rc = -EBADF;
1826                 } else if (fw_hdr->size % sizeof(struct wl_fw_hdr)) {
1827                         WL_ERROR("%s: non integral fw hdr file size %d/%zu\n",
1828                                  __func__, fw_hdr->size,
1829                                  sizeof(struct wl_fw_hdr));
1830                         rc = -EBADF;
1831                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1832                         WL_ERROR("%s: out of bounds fw file size %d\n",
1833                                  __func__, fw->size);
1834                         rc = -EBADF;
1835                 } else {
1836                         /* check if ucode section overruns firmware image */
1837                         ucode_hdr = (struct wl_fw_hdr *)fw_hdr->data;
1838                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] && rc;
1839                              entry++, ucode_hdr++) {
1840                                 if (ucode_hdr->offset + ucode_hdr->len >
1841                                     fw->size) {
1842                                         WL_ERROR("%s: conflicting bin/hdr\n",
1843                                                  __func__);
1844                                         rc = -EBADF;
1845                                 }
1846                         }
1847                 }
1848         }
1849         if (rc == 0 && wl->fw.fw_cnt != i) {
1850                 WL_ERROR("%s: invalid fw_cnt=%d\n", __func__, wl->fw.fw_cnt);
1851                 rc = -EBADF;
1852         }
1853         return rc;
1854 }
1855