drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define __UNDEF_NO_VERSION__
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/etherdevice.h>
  22 #include <linux/sched.h>
  23 #include <linux/firmware.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/bcma/bcma.h>
  27 #include <net/mac80211.h>
  28 #include <defs.h>
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37 #include "debug.h"
  38 #include "led.h"
  39
  40 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  41 #define BRCMS_FLUSH_TIMEOUT     500 /* msec */
  42
  43 /* Flags we support */
  44 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  45         FIF_ALLMULTI | \
  46         FIF_FCSFAIL | \
  47         FIF_CONTROL | \
  48         FIF_OTHER_BSS | \
  49         FIF_BCN_PRBRESP_PROMISC | \
  50         FIF_PSPOLL)
  51
  52 #define CHAN2GHZ(channel, freqency, chflags)  { \
  53         .band = IEEE80211_BAND_2GHZ, \
  54         .center_freq = (freqency), \
  55         .hw_value = (channel), \
  56         .flags = chflags, \
  57         .max_antenna_gain = 0, \
  58         .max_power = 19, \
  59 }
  60
  61 #define CHAN5GHZ(channel, chflags)  { \
  62         .band = IEEE80211_BAND_5GHZ, \
  63         .center_freq = 5000 + 5*(channel), \
  64         .hw_value = (channel), \
  65         .flags = chflags, \
  66         .max_antenna_gain = 0, \
  67         .max_power = 21, \
  68 }
  69
  70 #define RATE(rate100m, _flags) { \
  71         .bitrate = (rate100m), \
  72         .flags = (_flags), \
  73         .hw_value = (rate100m / 5), \
  74 }
  75
  76 struct firmware_hdr {
  77         __le32 offset;
  78         __le32 len;
  79         __le32 idx;
  80 };
  81
  82 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  83         "brcm/bcm43xx",
  84         NULL
  85 };
  86
  87 static int n_adapters_found;
  88
  89 MODULE_AUTHOR("Broadcom Corporation");
  90 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  91 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  92 MODULE_LICENSE("Dual BSD/GPL");
  93 /* This needs to be adjusted when brcms_firmwares changes */
  94 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  95 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  96
  97 /* recognized BCMA Core IDs */
  98 static struct bcma_device_id brcms_coreid_table[] = {
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
 100         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
 101         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 102         BCMA_CORETABLE_END
 103 };
 104 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 105
 106 #if defined(CONFIG_BRCMDBG)
 107 /*
 108  * Module parameter for setting the debug message level. Available
 109  * flags are specified by the BRCM_DL_* macros in
 110  * drivers/net/wireless/brcm80211/include/defs.h.
 111  */
 112 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
 113 #endif
 114
 115 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 116         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 119         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 120         CHAN2GHZ(5, 2432, 0),
 121         CHAN2GHZ(6, 2437, 0),
 122         CHAN2GHZ(7, 2442, 0),
 123         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 126         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 127         CHAN2GHZ(12, 2467,
 128                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 129                  IEEE80211_CHAN_NO_HT40PLUS),
 130         CHAN2GHZ(13, 2472,
 131                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 132                  IEEE80211_CHAN_NO_HT40PLUS),
 133         CHAN2GHZ(14, 2484,
 134                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 135                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 136                  IEEE80211_CHAN_NO_OFDM)
 137 };
 138
 139 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 140         /* UNII-1 */
 141         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 143         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 144         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 145         /* UNII-2 */
 146         CHAN5GHZ(52,
 147                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 148                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 149         CHAN5GHZ(56,
 150                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 151                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 152         CHAN5GHZ(60,
 153                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 154                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 155         CHAN5GHZ(64,
 156                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 157                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 158         /* MID */
 159         CHAN5GHZ(100,
 160                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 161                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 162         CHAN5GHZ(104,
 163                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 164                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 165         CHAN5GHZ(108,
 166                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 167                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 168         CHAN5GHZ(112,
 169                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 170                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 171         CHAN5GHZ(116,
 172                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 173                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 174         CHAN5GHZ(120,
 175                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 176                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 177         CHAN5GHZ(124,
 178                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 179                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 180         CHAN5GHZ(128,
 181                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 182                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 183         CHAN5GHZ(132,
 184                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 185                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(136,
 187                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 188                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 189         CHAN5GHZ(140,
 190                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 191                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 192                  IEEE80211_CHAN_NO_HT40MINUS),
 193         /* UNII-3 */
 194         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 197         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 198         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 199 };
 200
 201 /*
 202  * The rate table is used for both 2.4G and 5G rates. The
 203  * latter being a subset as it does not support CCK rates.
 204  */
 205 static struct ieee80211_rate legacy_ratetable[] = {
 206         RATE(10, 0),
 207         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 209         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 210         RATE(60, 0),
 211         RATE(90, 0),
 212         RATE(120, 0),
 213         RATE(180, 0),
 214         RATE(240, 0),
 215         RATE(360, 0),
 216         RATE(480, 0),
 217         RATE(540, 0),
 218 };
 219
 220 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 221         .band = IEEE80211_BAND_2GHZ,
 222         .channels = brcms_2ghz_chantable,
 223         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 224         .bitrates = legacy_ratetable,
 225         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 226         .ht_cap = {
 227                    /* from include/linux/ieee80211.h */
 228                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 229                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 230                    .ht_supported = true,
 231                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 232                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 233                    .mcs = {
 234                            /* placeholders for now */
 235                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 236                            .rx_highest = cpu_to_le16(500),
 237                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 238                    }
 239 };
 240
 241 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 242         .band = IEEE80211_BAND_5GHZ,
 243         .channels = brcms_5ghz_nphy_chantable,
 244         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 245         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 247                         BRCMS_LEGACY_5G_RATE_OFFSET,
 248         .ht_cap = {
 249                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 250                           IEEE80211_HT_CAP_SGI_40,
 251                    .ht_supported = true,
 252                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 253                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 254                    .mcs = {
 255                            /* placeholders for now */
 256                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 257                            .rx_highest = cpu_to_le16(500),
 258                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 259                    }
 260 };
 261
 262 /* flags the given rate in rateset as requested */
 263 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 264 {
 265         u32 i;
 266
 267         for (i = 0; i < rs->count; i++) {
 268                 if (rate != (rs->rates[i] & 0x7f))
 269                         continue;
 270
 271                 if (is_br)
 272                         rs->rates[i] |= BRCMS_RATE_FLAG;
 273                 else
 274                         rs->rates[i] &= BRCMS_RATE_MASK;
 275                 return;
 276         }
 277 }
 278
 279 /**
 280  * This function frees the WL per-device resources.
 281  *
 282  * This function frees resources owned by the WL device pointed to
 283  * by the wl parameter.
 284  *
 285  * precondition: can both be called locked and unlocked
 286  *
 287  */
 288 static void brcms_free(struct brcms_info *wl)
 289 {
 290         struct brcms_timer *t, *next;
 291
 292         /* free ucode data */
 293         if (wl->fw.fw_cnt)
 294                 brcms_ucode_data_free(&wl->ucode);
 295         if (wl->irq)
 296                 free_irq(wl->irq, wl);
 297
 298         /* kill dpc */
 299         tasklet_kill(&wl->tasklet);
 300
 301         if (wl->pub) {
 302                 brcms_debugfs_detach(wl->pub);
 303                 brcms_c_module_unregister(wl->pub, "linux", wl);
 304         }
 305
 306         /* free common resources */
 307         if (wl->wlc) {
 308                 brcms_c_detach(wl->wlc);
 309                 wl->wlc = NULL;
 310                 wl->pub = NULL;
 311         }
 312
 313         /* virtual interface deletion is deferred so we cannot spinwait */
 314
 315         /* wait for all pending callbacks to complete */
 316         while (atomic_read(&wl->callbacks) > 0)
 317                 schedule();
 318
 319         /* free timers */
 320         for (t = wl->timers; t; t = next) {
 321                 next = t->next;
 322 #ifdef DEBUG
 323                 kfree(t->name);
 324 #endif
 325                 kfree(t);
 326         }
 327 }
 328
 329 /*
 330 * called from both kernel as from this kernel module (error flow on attach)
 331 * precondition: perimeter lock is not acquired.
 332 */
 333 static void brcms_remove(struct bcma_device *pdev)
 334 {
 335         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 336         struct brcms_info *wl = hw->priv;
 337
 338         if (wl->wlc) {
 339                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 340                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 341                 ieee80211_unregister_hw(hw);
 342         }
 343
 344         brcms_free(wl);
 345
 346         bcma_set_drvdata(pdev, NULL);
 347         ieee80211_free_hw(hw);
 348 }
 349
 350 /*
 351  * Precondition: Since this function is called in brcms_pci_probe() context,
 352  * no locking is required.
 353  */
 354 static void brcms_release_fw(struct brcms_info *wl)
 355 {
 356         int i;
 357         for (i = 0; i < MAX_FW_IMAGES; i++) {
 358                 release_firmware(wl->fw.fw_bin[i]);
 359                 release_firmware(wl->fw.fw_hdr[i]);
 360         }
 361 }
 362
 363 /*
 364  * Precondition: Since this function is called in brcms_pci_probe() context,
 365  * no locking is required.
 366  */
 367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 368 {
 369         int status;
 370         struct device *device = &pdev->dev;
 371         char fw_name[100];
 372         int i;
 373
 374         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 375         for (i = 0; i < MAX_FW_IMAGES; i++) {
 376                 if (brcms_firmwares[i] == NULL)
 377                         break;
 378                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 379                         UCODE_LOADER_API_VER);
 380                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 381                 if (status) {
 382                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 383                                   KBUILD_MODNAME, fw_name);
 384                         return status;
 385                 }
 386                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 387                         UCODE_LOADER_API_VER);
 388                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 389                 if (status) {
 390                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 391                                   KBUILD_MODNAME, fw_name);
 392                         return status;
 393                 }
 394                 wl->fw.hdr_num_entries[i] =
 395                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 396         }
 397         wl->fw.fw_cnt = i;
 398         status = brcms_ucode_data_init(wl, &wl->ucode);
 399         brcms_release_fw(wl);
 400         return status;
 401 }
 402
 403 static void brcms_ops_tx(struct ieee80211_hw *hw,
 404                          struct ieee80211_tx_control *control,
 405                          struct sk_buff *skb)
 406 {
 407         struct brcms_info *wl = hw->priv;
 408         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 409
 410         spin_lock_bh(&wl->lock);
 411         if (!wl->pub->up) {
 412                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 413                 kfree_skb(skb);
 414                 goto done;
 415         }
 416         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 417                 tx_info->rate_driver_data[0] = control->sta;
 418  done:
 419         spin_unlock_bh(&wl->lock);
 420 }
 421
 422 static int brcms_ops_start(struct ieee80211_hw *hw)
 423 {
 424         struct brcms_info *wl = hw->priv;
 425         bool blocked;
 426         int err;
 427
 428         ieee80211_wake_queues(hw);
 429         spin_lock_bh(&wl->lock);
 430         blocked = brcms_rfkill_set_hw_state(wl);
 431         spin_unlock_bh(&wl->lock);
 432         if (!blocked)
 433                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 434
 435         if (!wl->ucode.bcm43xx_bomminor) {
 436                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 437                 if (err) {
 438                         brcms_remove(wl->wlc->hw->d11core);
 439                         return -ENOENT;
 440                 }
 441         }
 442
 443         spin_lock_bh(&wl->lock);
 444         /* avoid acknowledging frames before a non-monitor device is added */
 445         wl->mute_tx = true;
 446
 447         if (!wl->pub->up)
 448                 if (!blocked)
 449                         err = brcms_up(wl);
 450                 else
 451                         err = -ERFKILL;
 452         else
 453                 err = -ENODEV;
 454         spin_unlock_bh(&wl->lock);
 455
 456         if (err != 0)
 457                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 458                           __func__, err);
 459         return err;
 460 }
 461
 462 static void brcms_ops_stop(struct ieee80211_hw *hw)
 463 {
 464         struct brcms_info *wl = hw->priv;
 465         int status;
 466
 467         ieee80211_stop_queues(hw);
 468
 469         if (wl->wlc == NULL)
 470                 return;
 471
 472         spin_lock_bh(&wl->lock);
 473         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 474         spin_unlock_bh(&wl->lock);
 475         if (!status) {
 476                 brcms_err(wl->wlc->hw->d11core,
 477                           "wl: brcms_ops_stop: chipmatch failed\n");
 478                 return;
 479         }
 480
 481         /* put driver in down state */
 482         spin_lock_bh(&wl->lock);
 483         brcms_down(wl);
 484         spin_unlock_bh(&wl->lock);
 485 }
 486
 487 static int
 488 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 489 {
 490         struct brcms_info *wl = hw->priv;
 491
 492         /* Just STA, AP and ADHOC for now */
 493         if (vif->type != NL80211_IFTYPE_STATION &&
 494             vif->type != NL80211_IFTYPE_AP &&
 495             vif->type != NL80211_IFTYPE_ADHOC) {
 496                 brcms_err(wl->wlc->hw->d11core,
 497                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 498                           __func__, vif->type);
 499                 return -EOPNOTSUPP;
 500         }
 501
 502         spin_lock_bh(&wl->lock);
 503         wl->mute_tx = false;
 504         brcms_c_mute(wl->wlc, false);
 505         if (vif->type == NL80211_IFTYPE_STATION)
 506                 brcms_c_start_station(wl->wlc, vif->addr);
 507         else if (vif->type == NL80211_IFTYPE_AP)
 508                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 509                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 510         else if (vif->type == NL80211_IFTYPE_ADHOC)
 511                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 512         spin_unlock_bh(&wl->lock);
 513
 514         return 0;
 515 }
 516
 517 static void
 518 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 519 {
 520 }
 521
 522 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 523 {
 524         struct ieee80211_conf *conf = &hw->conf;
 525         struct brcms_info *wl = hw->priv;
 526         struct bcma_device *core = wl->wlc->hw->d11core;
 527         int err = 0;
 528         int new_int;
 529
 530         spin_lock_bh(&wl->lock);
 531         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 532                 brcms_c_set_beacon_listen_interval(wl->wlc,
 533                                                    conf->listen_interval);
 534         }
 535         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 536                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 537                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 538                                "true" : "false");
 539         if (changed & IEEE80211_CONF_CHANGE_PS)
 540                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 541                           __func__, conf->flags & IEEE80211_CONF_PS ?
 542                           "true" : "false");
 543
 544         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 545                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 546                 if (err < 0) {
 547                         brcms_err(core, "%s: Error setting power_level\n",
 548                                   __func__);
 549                         goto config_out;
 550                 }
 551                 new_int = brcms_c_get_tx_power(wl->wlc);
 552                 if (new_int != conf->power_level)
 553                         brcms_err(core,
 554                                   "%s: Power level req != actual, %d %d\n",
 555                                   __func__, conf->power_level,
 556                                   new_int);
 557         }
 558         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 559                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 560                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 561                         err = brcms_c_set_channel(wl->wlc,
 562                                                   conf->chandef.chan->hw_value);
 563                 else
 564                         err = -ENOTSUPP;
 565         }
 566         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 567                 err = brcms_c_set_rate_limit(wl->wlc,
 568                                              conf->short_frame_max_tx_count,
 569                                              conf->long_frame_max_tx_count);
 570
 571  config_out:
 572         spin_unlock_bh(&wl->lock);
 573         return err;
 574 }
 575
 576 static void
 577 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 578                         struct ieee80211_vif *vif,
 579                         struct ieee80211_bss_conf *info, u32 changed)
 580 {
 581         struct brcms_info *wl = hw->priv;
 582         struct bcma_device *core = wl->wlc->hw->d11core;
 583
 584         if (changed & BSS_CHANGED_ASSOC) {
 585                 /* association status changed (associated/disassociated)
 586                  * also implies a change in the AID.
 587                  */
 588                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 589                           __func__, info->assoc ? "" : "dis");
 590                 spin_lock_bh(&wl->lock);
 591                 brcms_c_associate_upd(wl->wlc, info->assoc);
 592                 spin_unlock_bh(&wl->lock);
 593         }
 594         if (changed & BSS_CHANGED_ERP_SLOT) {
 595                 s8 val;
 596
 597                 /* slot timing changed */
 598                 if (info->use_short_slot)
 599                         val = 1;
 600                 else
 601                         val = 0;
 602                 spin_lock_bh(&wl->lock);
 603                 brcms_c_set_shortslot_override(wl->wlc, val);
 604                 spin_unlock_bh(&wl->lock);
 605         }
 606
 607         if (changed & BSS_CHANGED_HT) {
 608                 /* 802.11n parameters changed */
 609                 u16 mode = info->ht_operation_mode;
 610
 611                 spin_lock_bh(&wl->lock);
 612                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 613                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 614                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 615                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 616                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 617                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 618                 spin_unlock_bh(&wl->lock);
 619         }
 620         if (changed & BSS_CHANGED_BASIC_RATES) {
 621                 struct ieee80211_supported_band *bi;
 622                 u32 br_mask, i;
 623                 u16 rate;
 624                 struct brcm_rateset rs;
 625                 int error;
 626
 627                 /* retrieve the current rates */
 628                 spin_lock_bh(&wl->lock);
 629                 brcms_c_get_current_rateset(wl->wlc, &rs);
 630                 spin_unlock_bh(&wl->lock);
 631
 632                 br_mask = info->basic_rates;
 633                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 634                 for (i = 0; i < bi->n_bitrates; i++) {
 635                         /* convert to internal rate value */
 636                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 637
 638                         /* set/clear basic rate flag */
 639                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 640                         br_mask >>= 1;
 641                 }
 642
 643                 /* update the rate set */
 644                 spin_lock_bh(&wl->lock);
 645                 error = brcms_c_set_rateset(wl->wlc, &rs);
 646                 spin_unlock_bh(&wl->lock);
 647                 if (error)
 648                         brcms_err(core, "changing basic rates failed: %d\n",
 649                                   error);
 650         }
 651         if (changed & BSS_CHANGED_BEACON_INT) {
 652                 /* Beacon interval changed */
 653                 spin_lock_bh(&wl->lock);
 654                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 655                 spin_unlock_bh(&wl->lock);
 656         }
 657         if (changed & BSS_CHANGED_BSSID) {
 658                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 659                 spin_lock_bh(&wl->lock);
 660                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 661                 spin_unlock_bh(&wl->lock);
 662         }
 663         if (changed & BSS_CHANGED_SSID) {
 664                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 665                 spin_lock_bh(&wl->lock);
 666                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 667                 spin_unlock_bh(&wl->lock);
 668         }
 669         if (changed & BSS_CHANGED_BEACON) {
 670                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 671                 struct sk_buff *beacon;
 672                 u16 tim_offset = 0;
 673
 674                 spin_lock_bh(&wl->lock);
 675                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 676                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 677                                        info->dtim_period);
 678                 spin_unlock_bh(&wl->lock);
 679         }
 680
 681         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 682                 struct sk_buff *probe_resp;
 683
 684                 spin_lock_bh(&wl->lock);
 685                 probe_resp = ieee80211_proberesp_get(hw, vif);
 686                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 687                 spin_unlock_bh(&wl->lock);
 688         }
 689
 690         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 691                 /* Beaconing should be enabled/disabled (beaconing modes) */
 692                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 693                           info->enable_beacon ? "true" : "false");
 694                 if (info->enable_beacon &&
 695                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 696                         brcms_c_enable_probe_resp(wl->wlc, true);
 697                 } else {
 698                         brcms_c_enable_probe_resp(wl->wlc, false);
 699                 }
 700         }
 701
 702         if (changed & BSS_CHANGED_CQM) {
 703                 /* Connection quality monitor config changed */
 704                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 705                           " (implement)\n", __func__, info->cqm_rssi_thold,
 706                           info->cqm_rssi_hyst);
 707         }
 708
 709         if (changed & BSS_CHANGED_IBSS) {
 710                 /* IBSS join status changed */
 711                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 712                           __func__, info->ibss_joined ? "true" : "false");
 713         }
 714
 715         if (changed & BSS_CHANGED_ARP_FILTER) {
 716                 /* Hardware ARP filter address list or state changed */
 717                 brcms_err(core, "%s: arp filtering: %d addresses"
 718                           " (implement)\n", __func__, info->arp_addr_cnt);
 719         }
 720
 721         if (changed & BSS_CHANGED_QOS) {
 722                 /*
 723                  * QoS for this association was enabled/disabled.
 724                  * Note that it is only ever disabled for station mode.
 725                  */
 726                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 727                           __func__, info->qos ? "true" : "false");
 728         }
 729         return;
 730 }
 731
 732 static void
 733 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 734                         unsigned int changed_flags,
 735                         unsigned int *total_flags, u64 multicast)
 736 {
 737         struct brcms_info *wl = hw->priv;
 738         struct bcma_device *core = wl->wlc->hw->d11core;
 739
 740         changed_flags &= MAC_FILTERS;
 741         *total_flags &= MAC_FILTERS;
 742
 743         if (changed_flags & FIF_PROMISC_IN_BSS)
 744                 brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n");
 745         if (changed_flags & FIF_ALLMULTI)
 746                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 747         if (changed_flags & FIF_FCSFAIL)
 748                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 749         if (changed_flags & FIF_CONTROL)
 750                 brcms_dbg_info(core, "FIF_CONTROL\n");
 751         if (changed_flags & FIF_OTHER_BSS)
 752                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 753         if (changed_flags & FIF_PSPOLL)
 754                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 755         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 756                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 757
 758         spin_lock_bh(&wl->lock);
 759         brcms_c_mac_promisc(wl->wlc, *total_flags);
 760         spin_unlock_bh(&wl->lock);
 761         return;
 762 }
 763
 764 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 765 {
 766         struct brcms_info *wl = hw->priv;
 767         spin_lock_bh(&wl->lock);
 768         brcms_c_scan_start(wl->wlc);
 769         spin_unlock_bh(&wl->lock);
 770         return;
 771 }
 772
 773 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 774 {
 775         struct brcms_info *wl = hw->priv;
 776         spin_lock_bh(&wl->lock);
 777         brcms_c_scan_stop(wl->wlc);
 778         spin_unlock_bh(&wl->lock);
 779         return;
 780 }
 781
 782 static int
 783 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 784                   const struct ieee80211_tx_queue_params *params)
 785 {
 786         struct brcms_info *wl = hw->priv;
 787
 788         spin_lock_bh(&wl->lock);
 789         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 790         spin_unlock_bh(&wl->lock);
 791
 792         return 0;
 793 }
 794
 795 static int
 796 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 797                struct ieee80211_sta *sta)
 798 {
 799         struct brcms_info *wl = hw->priv;
 800         struct scb *scb = &wl->wlc->pri_scb;
 801
 802         brcms_c_init_scb(scb);
 803
 804         wl->pub->global_ampdu = &(scb->scb_ampdu);
 805         wl->pub->global_ampdu->scb = scb;
 806         wl->pub->global_ampdu->max_pdu = 16;
 807
 808         /*
 809          * minstrel_ht initiates addBA on our behalf by calling
 810          * ieee80211_start_tx_ba_session()
 811          */
 812         return 0;
 813 }
 814
 815 static int
 816 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 817                     struct ieee80211_vif *vif,
 818                     enum ieee80211_ampdu_mlme_action action,
 819                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 820                     u8 buf_size)
 821 {
 822         struct brcms_info *wl = hw->priv;
 823         struct scb *scb = &wl->wlc->pri_scb;
 824         int status;
 825
 826         if (WARN_ON(scb->magic != SCB_MAGIC))
 827                 return -EIDRM;
 828         switch (action) {
 829         case IEEE80211_AMPDU_RX_START:
 830                 break;
 831         case IEEE80211_AMPDU_RX_STOP:
 832                 break;
 833         case IEEE80211_AMPDU_TX_START:
 834                 spin_lock_bh(&wl->lock);
 835                 status = brcms_c_aggregatable(wl->wlc, tid);
 836                 spin_unlock_bh(&wl->lock);
 837                 if (!status) {
 838                         brcms_err(wl->wlc->hw->d11core,
 839                                   "START: tid %d is not agg\'able\n", tid);
 840                         return -EINVAL;
 841                 }
 842                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 843                 break;
 844
 845         case IEEE80211_AMPDU_TX_STOP_CONT:
 846         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 847         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 848                 spin_lock_bh(&wl->lock);
 849                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 850                 spin_unlock_bh(&wl->lock);
 851                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 852                 break;
 853         case IEEE80211_AMPDU_TX_OPERATIONAL:
 854                 /*
 855                  * BA window size from ADDBA response ('buf_size') defines how
 856                  * many outstanding MPDUs are allowed for the BA stream by
 857                  * recipient and traffic class. 'ampdu_factor' gives maximum
 858                  * AMPDU size.
 859                  */
 860                 spin_lock_bh(&wl->lock);
 861                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 862                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 863                          sta->ht_cap.ampdu_factor)) - 1);
 864                 spin_unlock_bh(&wl->lock);
 865                 /* Power save wakeup */
 866                 break;
 867         default:
 868                 brcms_err(wl->wlc->hw->d11core,
 869                           "%s: Invalid command, ignoring\n", __func__);
 870         }
 871
 872         return 0;
 873 }
 874
 875 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 876 {
 877         struct brcms_info *wl = hw->priv;
 878         bool blocked;
 879
 880         spin_lock_bh(&wl->lock);
 881         blocked = brcms_c_check_radio_disabled(wl->wlc);
 882         spin_unlock_bh(&wl->lock);
 883
 884         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 885 }
 886
 887 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 888 {
 889         bool result;
 890
 891         spin_lock_bh(&wl->lock);
 892         result = brcms_c_tx_flush_completed(wl->wlc);
 893         spin_unlock_bh(&wl->lock);
 894         return result;
 895 }
 896
 897 static void brcms_ops_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
 898 {
 899         struct brcms_info *wl = hw->priv;
 900         int ret;
 901
 902         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 903
 904         ret = wait_event_timeout(wl->tx_flush_wq,
 905                                  brcms_tx_flush_completed(wl),
 906                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 907
 908         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 909                            "ret=%d\n", jiffies_to_msecs(ret));
 910 }
 911
 912 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 913 {
 914         struct brcms_info *wl = hw->priv;
 915         u64 tsf;
 916
 917         spin_lock_bh(&wl->lock);
 918         tsf = brcms_c_tsf_get(wl->wlc);
 919         spin_unlock_bh(&wl->lock);
 920
 921         return tsf;
 922 }
 923
 924 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 925                            struct ieee80211_vif *vif, u64 tsf)
 926 {
 927         struct brcms_info *wl = hw->priv;
 928
 929         spin_lock_bh(&wl->lock);
 930         brcms_c_tsf_set(wl->wlc, tsf);
 931         spin_unlock_bh(&wl->lock);
 932 }
 933
 934 static const struct ieee80211_ops brcms_ops = {
 935         .tx = brcms_ops_tx,
 936         .start = brcms_ops_start,
 937         .stop = brcms_ops_stop,
 938         .add_interface = brcms_ops_add_interface,
 939         .remove_interface = brcms_ops_remove_interface,
 940         .config = brcms_ops_config,
 941         .bss_info_changed = brcms_ops_bss_info_changed,
 942         .configure_filter = brcms_ops_configure_filter,
 943         .sw_scan_start = brcms_ops_sw_scan_start,
 944         .sw_scan_complete = brcms_ops_sw_scan_complete,
 945         .conf_tx = brcms_ops_conf_tx,
 946         .sta_add = brcms_ops_sta_add,
 947         .ampdu_action = brcms_ops_ampdu_action,
 948         .rfkill_poll = brcms_ops_rfkill_poll,
 949         .flush = brcms_ops_flush,
 950         .get_tsf = brcms_ops_get_tsf,
 951         .set_tsf = brcms_ops_set_tsf,
 952 };
 953
 954 void brcms_dpc(unsigned long data)
 955 {
 956         struct brcms_info *wl;
 957
 958         wl = (struct brcms_info *) data;
 959
 960         spin_lock_bh(&wl->lock);
 961
 962         /* call the common second level interrupt handler */
 963         if (wl->pub->up) {
 964                 if (wl->resched) {
 965                         unsigned long flags;
 966
 967                         spin_lock_irqsave(&wl->isr_lock, flags);
 968                         brcms_c_intrsupd(wl->wlc);
 969                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 970                 }
 971
 972                 wl->resched = brcms_c_dpc(wl->wlc, true);
 973         }
 974
 975         /* brcms_c_dpc() may bring the driver down */
 976         if (!wl->pub->up)
 977                 goto done;
 978
 979         /* re-schedule dpc */
 980         if (wl->resched)
 981                 tasklet_schedule(&wl->tasklet);
 982         else
 983                 /* re-enable interrupts */
 984                 brcms_intrson(wl);
 985
 986  done:
 987         spin_unlock_bh(&wl->lock);
 988         wake_up(&wl->tx_flush_wq);
 989 }
 990
 991 static irqreturn_t brcms_isr(int irq, void *dev_id)
 992 {
 993         struct brcms_info *wl;
 994         irqreturn_t ret = IRQ_NONE;
 995
 996         wl = (struct brcms_info *) dev_id;
 997
 998         spin_lock(&wl->isr_lock);
 999
1000         /* call common first level interrupt handler */
1001         if (brcms_c_isr(wl->wlc)) {
1002                 /* schedule second level handler */
1003                 tasklet_schedule(&wl->tasklet);
1004                 ret = IRQ_HANDLED;
1005         }
1006
1007         spin_unlock(&wl->isr_lock);
1008
1009         return ret;
1010 }
1011
1012 /*
1013  * is called in brcms_pci_probe() context, therefore no locking required.
1014  */
1015 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1016 {
1017         struct brcms_info *wl = hw->priv;
1018         struct brcms_c_info *wlc = wl->wlc;
1019         struct ieee80211_supported_band *band;
1020         int has_5g = 0;
1021         u16 phy_type;
1022
1023         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1024         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1025
1026         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1027         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1028                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1029                 *band = brcms_band_2GHz_nphy_template;
1030                 if (phy_type == PHY_TYPE_LCN) {
1031                         /* Single stream */
1032                         band->ht_cap.mcs.rx_mask[1] = 0;
1033                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1034                 }
1035                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1036         } else {
1037                 return -EPERM;
1038         }
1039
1040         /* Assume all bands use the same phy.  True for 11n devices. */
1041         if (wl->pub->_nbands > 1) {
1042                 has_5g++;
1043                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1044                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1045                         *band = brcms_band_5GHz_nphy_template;
1046                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1047                 } else {
1048                         return -EPERM;
1049                 }
1050         }
1051         return 0;
1052 }
1053
1054 /*
1055  * is called in brcms_pci_probe() context, therefore no locking required.
1056  */
1057 static int ieee_hw_init(struct ieee80211_hw *hw)
1058 {
1059         hw->flags = IEEE80211_HW_SIGNAL_DBM
1060             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1061             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1062             | IEEE80211_HW_AMPDU_AGGREGATION;
1063
1064         hw->extra_tx_headroom = brcms_c_get_header_len();
1065         hw->queues = N_TX_QUEUES;
1066         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1067
1068         /* channel change time is dependent on chip and band  */
1069         hw->channel_change_time = 7 * 1000;
1070         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1071                                      BIT(NL80211_IFTYPE_AP) |
1072                                      BIT(NL80211_IFTYPE_ADHOC);
1073
1074         /*
1075          * deactivate sending probe responses by ucude, because this will
1076          * cause problems when WPS is used.
1077          *
1078          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1079          */
1080
1081         hw->rate_control_algorithm = "minstrel_ht";
1082
1083         hw->sta_data_size = 0;
1084         return ieee_hw_rate_init(hw);
1085 }
1086
1087 /**
1088  * attach to the WL device.
1089  *
1090  * Attach to the WL device identified by vendor and device parameters.
1091  * regs is a host accessible memory address pointing to WL device registers.
1092  *
1093  * brcms_attach is not defined as static because in the case where no bus
1094  * is defined, wl_attach will never be called, and thus, gcc will issue
1095  * a warning that this function is defined but not used if we declare
1096  * it as static.
1097  *
1098  *
1099  * is called in brcms_bcma_probe() context, therefore no locking required.
1100  */
1101 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1102 {
1103         struct brcms_info *wl = NULL;
1104         int unit, err;
1105         struct ieee80211_hw *hw;
1106         u8 perm[ETH_ALEN];
1107
1108         unit = n_adapters_found;
1109         err = 0;
1110
1111         if (unit < 0)
1112                 return NULL;
1113
1114         /* allocate private info */
1115         hw = bcma_get_drvdata(pdev);
1116         if (hw != NULL)
1117                 wl = hw->priv;
1118         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1119                 return NULL;
1120         wl->wiphy = hw->wiphy;
1121
1122         atomic_set(&wl->callbacks, 0);
1123
1124         init_waitqueue_head(&wl->tx_flush_wq);
1125
1126         /* setup the bottom half handler */
1127         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1128
1129         spin_lock_init(&wl->lock);
1130         spin_lock_init(&wl->isr_lock);
1131
1132         /* common load-time initialization */
1133         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1134         if (!wl->wlc) {
1135                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1136                           KBUILD_MODNAME, err);
1137                 goto fail;
1138         }
1139         wl->pub = brcms_c_pub(wl->wlc);
1140
1141         wl->pub->ieee_hw = hw;
1142
1143         /* register our interrupt handler */
1144         if (request_irq(pdev->irq, brcms_isr,
1145                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1146                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1147                 goto fail;
1148         }
1149         wl->irq = pdev->irq;
1150
1151         /* register module */
1152         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1153
1154         if (ieee_hw_init(hw)) {
1155                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1156                           __func__);
1157                 goto fail;
1158         }
1159
1160         brcms_c_regd_init(wl->wlc);
1161
1162         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1163         if (WARN_ON(!is_valid_ether_addr(perm)))
1164                 goto fail;
1165         SET_IEEE80211_PERM_ADDR(hw, perm);
1166
1167         err = ieee80211_register_hw(hw);
1168         if (err)
1169                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1170                           "%d\n", __func__, err);
1171
1172         if (wl->pub->srom_ccode[0] &&
1173             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1174                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1175
1176         brcms_debugfs_attach(wl->pub);
1177         brcms_debugfs_create_files(wl->pub);
1178         n_adapters_found++;
1179         return wl;
1180
1181 fail:
1182         brcms_free(wl);
1183         return NULL;
1184 }
1185
1186
1187
1188 /**
1189  * determines if a device is a WL device, and if so, attaches it.
1190  *
1191  * This function determines if a device pointed to by pdev is a WL device,
1192  * and if so, performs a brcms_attach() on it.
1193  *
1194  * Perimeter lock is initialized in the course of this function.
1195  */
1196 static int brcms_bcma_probe(struct bcma_device *pdev)
1197 {
1198         struct brcms_info *wl;
1199         struct ieee80211_hw *hw;
1200
1201         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1202                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1203                  pdev->irq);
1204
1205         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1206             (pdev->id.id != BCMA_CORE_80211))
1207                 return -ENODEV;
1208
1209         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1210         if (!hw) {
1211                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1212                 return -ENOMEM;
1213         }
1214
1215         SET_IEEE80211_DEV(hw, &pdev->dev);
1216
1217         bcma_set_drvdata(pdev, hw);
1218
1219         memset(hw->priv, 0, sizeof(*wl));
1220
1221         wl = brcms_attach(pdev);
1222         if (!wl) {
1223                 pr_err("%s: brcms_attach failed!\n", __func__);
1224                 return -ENODEV;
1225         }
1226         brcms_led_register(wl);
1227
1228         return 0;
1229 }
1230
1231 static int brcms_suspend(struct bcma_device *pdev)
1232 {
1233         struct brcms_info *wl;
1234         struct ieee80211_hw *hw;
1235
1236         hw = bcma_get_drvdata(pdev);
1237         wl = hw->priv;
1238         if (!wl) {
1239                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1240                        __func__);
1241                 return -ENODEV;
1242         }
1243
1244         /* only need to flag hw is down for proper resume */
1245         spin_lock_bh(&wl->lock);
1246         wl->pub->hw_up = false;
1247         spin_unlock_bh(&wl->lock);
1248
1249         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1250
1251         return 0;
1252 }
1253
1254 static int brcms_resume(struct bcma_device *pdev)
1255 {
1256         return 0;
1257 }
1258
1259 static struct bcma_driver brcms_bcma_driver = {
1260         .name     = KBUILD_MODNAME,
1261         .probe    = brcms_bcma_probe,
1262         .suspend  = brcms_suspend,
1263         .resume   = brcms_resume,
1264         .remove   = brcms_remove,
1265         .id_table = brcms_coreid_table,
1266 };
1267
1268 /**
1269  * This is the main entry point for the brcmsmac driver.
1270  *
1271  * This function is scheduled upon module initialization and
1272  * does the driver registration, which result in brcms_bcma_probe()
1273  * call resulting in the driver bringup.
1274  */
1275 static void brcms_driver_init(struct work_struct *work)
1276 {
1277         int error;
1278
1279         error = bcma_driver_register(&brcms_bcma_driver);
1280         if (error)
1281                 pr_err("%s: register returned %d\n", __func__, error);
1282 }
1283
1284 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1285
1286 static int __init brcms_module_init(void)
1287 {
1288         brcms_debugfs_init();
1289         if (!schedule_work(&brcms_driver_work))
1290                 return -EBUSY;
1291
1292         return 0;
1293 }
1294
1295 /**
1296  * This function unloads the brcmsmac driver from the system.
1297  *
1298  * This function unconditionally unloads the brcmsmac driver module from the
1299  * system.
1300  *
1301  */
1302 static void __exit brcms_module_exit(void)
1303 {
1304         cancel_work_sync(&brcms_driver_work);
1305         bcma_driver_unregister(&brcms_bcma_driver);
1306         brcms_debugfs_exit();
1307 }
1308
1309 module_init(brcms_module_init);
1310 module_exit(brcms_module_exit);
1311
1312 /*
1313  * precondition: perimeter lock has been acquired
1314  */
1315 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1316                          bool state, int prio)
1317 {
1318         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1319 }
1320
1321 /*
1322  * precondition: perimeter lock has been acquired
1323  */
1324 void brcms_init(struct brcms_info *wl)
1325 {
1326         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1327                        wl->pub->unit);
1328         brcms_reset(wl);
1329         brcms_c_init(wl->wlc, wl->mute_tx);
1330 }
1331
1332 /*
1333  * precondition: perimeter lock has been acquired
1334  */
1335 uint brcms_reset(struct brcms_info *wl)
1336 {
1337         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1338         brcms_c_reset(wl->wlc);
1339
1340         /* dpc will not be rescheduled */
1341         wl->resched = false;
1342
1343         /* inform publicly that interface is down */
1344         wl->pub->up = false;
1345
1346         return 0;
1347 }
1348
1349 void brcms_fatal_error(struct brcms_info *wl)
1350 {
1351         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1352                   wl->wlc->pub->unit);
1353         brcms_reset(wl);
1354         ieee80211_restart_hw(wl->pub->ieee_hw);
1355 }
1356
1357 /*
1358  * These are interrupt on/off entry points. Disable interrupts
1359  * during interrupt state transition.
1360  */
1361 void brcms_intrson(struct brcms_info *wl)
1362 {
1363         unsigned long flags;
1364
1365         spin_lock_irqsave(&wl->isr_lock, flags);
1366         brcms_c_intrson(wl->wlc);
1367         spin_unlock_irqrestore(&wl->isr_lock, flags);
1368 }
1369
1370 u32 brcms_intrsoff(struct brcms_info *wl)
1371 {
1372         unsigned long flags;
1373         u32 status;
1374
1375         spin_lock_irqsave(&wl->isr_lock, flags);
1376         status = brcms_c_intrsoff(wl->wlc);
1377         spin_unlock_irqrestore(&wl->isr_lock, flags);
1378         return status;
1379 }
1380
1381 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1382 {
1383         unsigned long flags;
1384
1385         spin_lock_irqsave(&wl->isr_lock, flags);
1386         brcms_c_intrsrestore(wl->wlc, macintmask);
1387         spin_unlock_irqrestore(&wl->isr_lock, flags);
1388 }
1389
1390 /*
1391  * precondition: perimeter lock has been acquired
1392  */
1393 int brcms_up(struct brcms_info *wl)
1394 {
1395         int error = 0;
1396
1397         if (wl->pub->up)
1398                 return 0;
1399
1400         error = brcms_c_up(wl->wlc);
1401
1402         return error;
1403 }
1404
1405 /*
1406  * precondition: perimeter lock has been acquired
1407  */
1408 void brcms_down(struct brcms_info *wl)
1409 {
1410         uint callbacks, ret_val = 0;
1411
1412         /* call common down function */
1413         ret_val = brcms_c_down(wl->wlc);
1414         callbacks = atomic_read(&wl->callbacks) - ret_val;
1415
1416         /* wait for down callbacks to complete */
1417         spin_unlock_bh(&wl->lock);
1418
1419         /* For HIGH_only driver, it's important to actually schedule other work,
1420          * not just spin wait since everything runs at schedule level
1421          */
1422         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1423
1424         spin_lock_bh(&wl->lock);
1425 }
1426
1427 /*
1428 * precondition: perimeter lock is not acquired
1429  */
1430 static void _brcms_timer(struct work_struct *work)
1431 {
1432         struct brcms_timer *t = container_of(work, struct brcms_timer,
1433                                              dly_wrk.work);
1434
1435         spin_lock_bh(&t->wl->lock);
1436
1437         if (t->set) {
1438                 if (t->periodic) {
1439                         atomic_inc(&t->wl->callbacks);
1440                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1441                                                      &t->dly_wrk,
1442                                                      msecs_to_jiffies(t->ms));
1443                 } else {
1444                         t->set = false;
1445                 }
1446
1447                 t->fn(t->arg);
1448         }
1449
1450         atomic_dec(&t->wl->callbacks);
1451
1452         spin_unlock_bh(&t->wl->lock);
1453 }
1454
1455 /*
1456  * Adds a timer to the list. Caller supplies a timer function.
1457  * Is called from wlc.
1458  *
1459  * precondition: perimeter lock has been acquired
1460  */
1461 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1462                                      void (*fn) (void *arg),
1463                                      void *arg, const char *name)
1464 {
1465         struct brcms_timer *t;
1466
1467         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1468         if (!t)
1469                 return NULL;
1470
1471         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1472         t->wl = wl;
1473         t->fn = fn;
1474         t->arg = arg;
1475         t->next = wl->timers;
1476         wl->timers = t;
1477
1478 #ifdef DEBUG
1479         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1480         if (t->name)
1481                 strcpy(t->name, name);
1482 #endif
1483
1484         return t;
1485 }
1486
1487 /*
1488  * adds only the kernel timer since it's going to be more accurate
1489  * as well as it's easier to make it periodic
1490  *
1491  * precondition: perimeter lock has been acquired
1492  */
1493 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1494 {
1495         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1496
1497 #ifdef DEBUG
1498         if (t->set)
1499                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1500                                "%s: Already set. Name: %s, per %d\n",
1501                                __func__, t->name, periodic);
1502 #endif
1503         t->ms = ms;
1504         t->periodic = (bool) periodic;
1505         if (!t->set) {
1506                 t->set = true;
1507                 atomic_inc(&t->wl->callbacks);
1508         }
1509
1510         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1511 }
1512
1513 /*
1514  * return true if timer successfully deleted, false if still pending
1515  *
1516  * precondition: perimeter lock has been acquired
1517  */
1518 bool brcms_del_timer(struct brcms_timer *t)
1519 {
1520         if (t->set) {
1521                 t->set = false;
1522                 if (!cancel_delayed_work(&t->dly_wrk))
1523                         return false;
1524
1525                 atomic_dec(&t->wl->callbacks);
1526         }
1527
1528         return true;
1529 }
1530
1531 /*
1532  * precondition: perimeter lock has been acquired
1533  */
1534 void brcms_free_timer(struct brcms_timer *t)
1535 {
1536         struct brcms_info *wl = t->wl;
1537         struct brcms_timer *tmp;
1538
1539         /* delete the timer in case it is active */
1540         brcms_del_timer(t);
1541
1542         if (wl->timers == t) {
1543                 wl->timers = wl->timers->next;
1544 #ifdef DEBUG
1545                 kfree(t->name);
1546 #endif
1547                 kfree(t);
1548                 return;
1549
1550         }
1551
1552         tmp = wl->timers;
1553         while (tmp) {
1554                 if (tmp->next == t) {
1555                         tmp->next = t->next;
1556 #ifdef DEBUG
1557                         kfree(t->name);
1558 #endif
1559                         kfree(t);
1560                         return;
1561                 }
1562                 tmp = tmp->next;
1563         }
1564
1565 }
1566
1567 /*
1568  * precondition: perimeter lock has been acquired
1569  */
1570 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1571 {
1572         int i, entry;
1573         const u8 *pdata;
1574         struct firmware_hdr *hdr;
1575         for (i = 0; i < wl->fw.fw_cnt; i++) {
1576                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1577                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1578                      entry++, hdr++) {
1579                         u32 len = le32_to_cpu(hdr->len);
1580                         if (le32_to_cpu(hdr->idx) == idx) {
1581                                 pdata = wl->fw.fw_bin[i]->data +
1582                                         le32_to_cpu(hdr->offset);
1583                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1584                                 if (*pbuf == NULL)
1585                                         goto fail;
1586
1587                                 return 0;
1588                         }
1589                 }
1590         }
1591         brcms_err(wl->wlc->hw->d11core,
1592                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1593         *pbuf = NULL;
1594 fail:
1595         return -ENODATA;
1596 }
1597
1598 /*
1599  * Precondition: Since this function is called in brcms_bcma_probe() context,
1600  * no locking is required.
1601  */
1602 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1603 {
1604         int i, entry;
1605         const u8 *pdata;
1606         struct firmware_hdr *hdr;
1607         for (i = 0; i < wl->fw.fw_cnt; i++) {
1608                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1609                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1610                      entry++, hdr++) {
1611                         if (le32_to_cpu(hdr->idx) == idx) {
1612                                 pdata = wl->fw.fw_bin[i]->data +
1613                                         le32_to_cpu(hdr->offset);
1614                                 if (le32_to_cpu(hdr->len) != 4) {
1615                                         brcms_err(wl->wlc->hw->d11core,
1616                                                   "ERROR: fw hdr len\n");
1617                                         return -ENOMSG;
1618                                 }
1619                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1620                                 return 0;
1621                         }
1622                 }
1623         }
1624         brcms_err(wl->wlc->hw->d11core,
1625                   "ERROR: ucode tag:%d can not be found!\n", idx);
1626         return -ENOMSG;
1627 }
1628
1629 /*
1630  * precondition: can both be called locked and unlocked
1631  */
1632 void brcms_ucode_free_buf(void *p)
1633 {
1634         kfree(p);
1635 }
1636
1637 /*
1638  * checks validity of all firmware images loaded from user space
1639  *
1640  * Precondition: Since this function is called in brcms_bcma_probe() context,
1641  * no locking is required.
1642  */
1643 int brcms_check_firmwares(struct brcms_info *wl)
1644 {
1645         int i;
1646         int entry;
1647         int rc = 0;
1648         const struct firmware *fw;
1649         const struct firmware *fw_hdr;
1650         struct firmware_hdr *ucode_hdr;
1651         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1652                 fw =  wl->fw.fw_bin[i];
1653                 fw_hdr = wl->fw.fw_hdr[i];
1654                 if (fw == NULL && fw_hdr == NULL) {
1655                         break;
1656                 } else if (fw == NULL || fw_hdr == NULL) {
1657                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1658                                   __func__);
1659                         rc = -EBADF;
1660                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1661                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1662                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1663                                 sizeof(struct firmware_hdr));
1664                         rc = -EBADF;
1665                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1666                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1667                                   __func__, fw->size);
1668                         rc = -EBADF;
1669                 } else {
1670                         /* check if ucode section overruns firmware image */
1671                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1672                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1673                              !rc; entry++, ucode_hdr++) {
1674                                 if (le32_to_cpu(ucode_hdr->offset) +
1675                                     le32_to_cpu(ucode_hdr->len) >
1676                                     fw->size) {
1677                                         wiphy_err(wl->wiphy,
1678                                                   "%s: conflicting bin/hdr\n",
1679                                                   __func__);
1680                                         rc = -EBADF;
1681                                 }
1682                         }
1683                 }
1684         }
1685         if (rc == 0 && wl->fw.fw_cnt != i) {
1686                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1687                         wl->fw.fw_cnt);
1688                 rc = -EBADF;
1689         }
1690         return rc;
1691 }
1692
1693 /*
1694  * precondition: perimeter lock has been acquired
1695  */
1696 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1697 {
1698         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1699
1700         spin_unlock_bh(&wl->lock);
1701         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1702         if (blocked)
1703                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1704         spin_lock_bh(&wl->lock);
1705         return blocked;
1706 }