drivers/net/wireless/broadcom/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_ALLMULTI | \
  45         FIF_FCSFAIL | \
  46         FIF_CONTROL | \
  47         FIF_OTHER_BSS | \
  48         FIF_BCN_PRBRESP_PROMISC | \
  49         FIF_PSPOLL)
  50
  51 #define CHAN2GHZ(channel, freqency, chflags)  { \
  52         .band = NL80211_BAND_2GHZ, \
  53         .center_freq = (freqency), \
  54         .hw_value = (channel), \
  55         .flags = chflags, \
  56         .max_antenna_gain = 0, \
  57         .max_power = 19, \
  58 }
  59
  60 #define CHAN5GHZ(channel, chflags)  { \
  61         .band = NL80211_BAND_5GHZ, \
  62         .center_freq = 5000 + 5*(channel), \
  63         .hw_value = (channel), \
  64         .flags = chflags, \
  65         .max_antenna_gain = 0, \
  66         .max_power = 21, \
  67 }
  68
  69 #define RATE(rate100m, _flags) { \
  70         .bitrate = (rate100m), \
  71         .flags = (_flags), \
  72         .hw_value = (rate100m / 5), \
  73 }
  74
  75 struct firmware_hdr {
  76         __le32 offset;
  77         __le32 len;
  78         __le32 idx;
  79 };
  80
  81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  82         "/*(DEBLOBBED)*/",
  83         NULL
  84 };
  85
  86 static int n_adapters_found;
  87
  88 MODULE_AUTHOR("Broadcom Corporation");
  89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  90 MODULE_LICENSE("Dual BSD/GPL");
  91 /* This needs to be adjusted when brcms_firmwares changes */
  92 /*(DEBLOBBED)*/
  93
  94 /* recognized BCMA Core IDs */
  95 static struct bcma_device_id brcms_coreid_table[] = {
  96         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  97         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
  99         {},
 100 };
 101 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 102
 103 #if defined(CONFIG_BRCMDBG)
 104 /*
 105  * Module parameter for setting the debug message level. Available
 106  * flags are specified by the BRCM_DL_* macros in
 107  * drivers/net/wireless/brcm80211/include/defs.h.
 108  */
 109 module_param_named(debug, brcm_msg_level, uint, 0644);
 110 #endif
 111
 112 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 113         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 114         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 115         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(5, 2432, 0),
 118         CHAN2GHZ(6, 2437, 0),
 119         CHAN2GHZ(7, 2442, 0),
 120         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 121         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(12, 2467,
 125                  IEEE80211_CHAN_NO_IR |
 126                  IEEE80211_CHAN_NO_HT40PLUS),
 127         CHAN2GHZ(13, 2472,
 128                  IEEE80211_CHAN_NO_IR |
 129                  IEEE80211_CHAN_NO_HT40PLUS),
 130         CHAN2GHZ(14, 2484,
 131                  IEEE80211_CHAN_NO_IR |
 132                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 133                  IEEE80211_CHAN_NO_OFDM)
 134 };
 135
 136 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 137         /* UNII-1 */
 138         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 139         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 140         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 141         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 142         /* UNII-2 */
 143         CHAN5GHZ(52,
 144                  IEEE80211_CHAN_RADAR |
 145                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 146         CHAN5GHZ(56,
 147                  IEEE80211_CHAN_RADAR |
 148                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 149         CHAN5GHZ(60,
 150                  IEEE80211_CHAN_RADAR |
 151                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 152         CHAN5GHZ(64,
 153                  IEEE80211_CHAN_RADAR |
 154                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 155         /* MID */
 156         CHAN5GHZ(100,
 157                  IEEE80211_CHAN_RADAR |
 158                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 159         CHAN5GHZ(104,
 160                  IEEE80211_CHAN_RADAR |
 161                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 162         CHAN5GHZ(108,
 163                  IEEE80211_CHAN_RADAR |
 164                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 165         CHAN5GHZ(112,
 166                  IEEE80211_CHAN_RADAR |
 167                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 168         CHAN5GHZ(116,
 169                  IEEE80211_CHAN_RADAR |
 170                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 171         CHAN5GHZ(120,
 172                  IEEE80211_CHAN_RADAR |
 173                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 174         CHAN5GHZ(124,
 175                  IEEE80211_CHAN_RADAR |
 176                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 177         CHAN5GHZ(128,
 178                  IEEE80211_CHAN_RADAR |
 179                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 180         CHAN5GHZ(132,
 181                  IEEE80211_CHAN_RADAR |
 182                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 183         CHAN5GHZ(136,
 184                  IEEE80211_CHAN_RADAR |
 185                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 186         CHAN5GHZ(140,
 187                  IEEE80211_CHAN_RADAR |
 188                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 189                  IEEE80211_CHAN_NO_HT40MINUS),
 190         /* UNII-3 */
 191         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 192         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 193         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 194         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 195         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 196 };
 197
 198 /*
 199  * The rate table is used for both 2.4G and 5G rates. The
 200  * latter being a subset as it does not support CCK rates.
 201  */
 202 static struct ieee80211_rate legacy_ratetable[] = {
 203         RATE(10, 0),
 204         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 205         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 206         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(60, 0),
 208         RATE(90, 0),
 209         RATE(120, 0),
 210         RATE(180, 0),
 211         RATE(240, 0),
 212         RATE(360, 0),
 213         RATE(480, 0),
 214         RATE(540, 0),
 215 };
 216
 217 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 218         .band = NL80211_BAND_2GHZ,
 219         .channels = brcms_2ghz_chantable,
 220         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 221         .bitrates = legacy_ratetable,
 222         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 223         .ht_cap = {
 224                    /* from include/linux/ieee80211.h */
 225                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 226                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 227                    .ht_supported = true,
 228                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 229                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 230                    .mcs = {
 231                            /* placeholders for now */
 232                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 233                            .rx_highest = cpu_to_le16(500),
 234                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 235                    }
 236 };
 237
 238 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 239         .band = NL80211_BAND_5GHZ,
 240         .channels = brcms_5ghz_nphy_chantable,
 241         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 242         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 243         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 244                         BRCMS_LEGACY_5G_RATE_OFFSET,
 245         .ht_cap = {
 246                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 247                           IEEE80211_HT_CAP_SGI_40,
 248                    .ht_supported = true,
 249                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 250                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 251                    .mcs = {
 252                            /* placeholders for now */
 253                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 254                            .rx_highest = cpu_to_le16(500),
 255                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 256                    }
 257 };
 258
 259 /* flags the given rate in rateset as requested */
 260 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 261 {
 262         u32 i;
 263
 264         for (i = 0; i < rs->count; i++) {
 265                 if (rate != (rs->rates[i] & 0x7f))
 266                         continue;
 267
 268                 if (is_br)
 269                         rs->rates[i] |= BRCMS_RATE_FLAG;
 270                 else
 271                         rs->rates[i] &= BRCMS_RATE_MASK;
 272                 return;
 273         }
 274 }
 275
 276 /*
 277  * This function frees the WL per-device resources.
 278  *
 279  * This function frees resources owned by the WL device pointed to
 280  * by the wl parameter.
 281  *
 282  * precondition: can both be called locked and unlocked
 283  */
 284 static void brcms_free(struct brcms_info *wl)
 285 {
 286         struct brcms_timer *t, *next;
 287
 288         /* free ucode data */
 289         if (wl->fw.fw_cnt)
 290                 brcms_ucode_data_free(&wl->ucode);
 291         if (wl->irq)
 292                 free_irq(wl->irq, wl);
 293
 294         /* kill dpc */
 295         tasklet_kill(&wl->tasklet);
 296
 297         if (wl->pub) {
 298                 brcms_debugfs_detach(wl->pub);
 299                 brcms_c_module_unregister(wl->pub, "linux", wl);
 300         }
 301
 302         /* free common resources */
 303         if (wl->wlc) {
 304                 brcms_c_detach(wl->wlc);
 305                 wl->wlc = NULL;
 306                 wl->pub = NULL;
 307         }
 308
 309         /* virtual interface deletion is deferred so we cannot spinwait */
 310
 311         /* wait for all pending callbacks to complete */
 312         while (atomic_read(&wl->callbacks) > 0)
 313                 schedule();
 314
 315         /* free timers */
 316         for (t = wl->timers; t; t = next) {
 317                 next = t->next;
 318 #ifdef DEBUG
 319                 kfree(t->name);
 320 #endif
 321                 kfree(t);
 322         }
 323 }
 324
 325 /*
 326 * called from both kernel as from this kernel module (error flow on attach)
 327 * precondition: perimeter lock is not acquired.
 328 */
 329 static void brcms_remove(struct bcma_device *pdev)
 330 {
 331         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 332         struct brcms_info *wl = hw->priv;
 333
 334         if (wl->wlc) {
 335                 brcms_led_unregister(wl);
 336                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 337                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 338                 ieee80211_unregister_hw(hw);
 339         }
 340
 341         brcms_free(wl);
 342
 343         bcma_set_drvdata(pdev, NULL);
 344         ieee80211_free_hw(hw);
 345 }
 346
 347 /*
 348  * Precondition: Since this function is called in brcms_pci_probe() context,
 349  * no locking is required.
 350  */
 351 static void brcms_release_fw(struct brcms_info *wl)
 352 {
 353         int i;
 354         for (i = 0; i < MAX_FW_IMAGES; i++) {
 355                 release_firmware(wl->fw.fw_bin[i]);
 356                 release_firmware(wl->fw.fw_hdr[i]);
 357         }
 358 }
 359
 360 /*
 361  * Precondition: Since this function is called in brcms_pci_probe() context,
 362  * no locking is required.
 363  */
 364 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 365 {
 366         int status;
 367         struct device *device = &pdev->dev;
 368         char fw_name[100];
 369         int i;
 370
 371         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 372         for (i = 0; i < MAX_FW_IMAGES; i++) {
 373                 if (brcms_firmwares[i] == NULL)
 374                         break;
 375                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 376                         UCODE_LOADER_API_VER);
 377                 status = reject_firmware(&wl->fw.fw_bin[i], fw_name, device);
 378                 if (status) {
 379                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 380                                   KBUILD_MODNAME, fw_name);
 381                         return status;
 382                 }
 383                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 384                         UCODE_LOADER_API_VER);
 385                 status = reject_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 386                 if (status) {
 387                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 388                                   KBUILD_MODNAME, fw_name);
 389                         return status;
 390                 }
 391                 wl->fw.hdr_num_entries[i] =
 392                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 393         }
 394         wl->fw.fw_cnt = i;
 395         status = brcms_ucode_data_init(wl, &wl->ucode);
 396         brcms_release_fw(wl);
 397         return status;
 398 }
 399
 400 static void brcms_ops_tx(struct ieee80211_hw *hw,
 401                          struct ieee80211_tx_control *control,
 402                          struct sk_buff *skb)
 403 {
 404         struct brcms_info *wl = hw->priv;
 405         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 406
 407         spin_lock_bh(&wl->lock);
 408         if (!wl->pub->up) {
 409                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 410                 kfree_skb(skb);
 411                 goto done;
 412         }
 413         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 414                 tx_info->rate_driver_data[0] = control->sta;
 415  done:
 416         spin_unlock_bh(&wl->lock);
 417 }
 418
 419 static int brcms_ops_start(struct ieee80211_hw *hw)
 420 {
 421         struct brcms_info *wl = hw->priv;
 422         bool blocked;
 423         int err;
 424
 425         if (!wl->ucode.bcm43xx_bomminor) {
 426                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 427                 if (err)
 428                         return -ENOENT;
 429         }
 430
 431         ieee80211_wake_queues(hw);
 432         spin_lock_bh(&wl->lock);
 433         blocked = brcms_rfkill_set_hw_state(wl);
 434         spin_unlock_bh(&wl->lock);
 435         if (!blocked)
 436                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 437
 438         spin_lock_bh(&wl->lock);
 439         /* avoid acknowledging frames before a non-monitor device is added */
 440         wl->mute_tx = true;
 441
 442         if (!wl->pub->up)
 443                 if (!blocked)
 444                         err = brcms_up(wl);
 445                 else
 446                         err = -ERFKILL;
 447         else
 448                 err = -ENODEV;
 449         spin_unlock_bh(&wl->lock);
 450
 451         if (err != 0)
 452                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 453                           __func__, err);
 454
 455         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 456         return err;
 457 }
 458
 459 static void brcms_ops_stop(struct ieee80211_hw *hw)
 460 {
 461         struct brcms_info *wl = hw->priv;
 462         int status;
 463
 464         ieee80211_stop_queues(hw);
 465
 466         if (wl->wlc == NULL)
 467                 return;
 468
 469         spin_lock_bh(&wl->lock);
 470         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 471         spin_unlock_bh(&wl->lock);
 472         if (!status) {
 473                 brcms_err(wl->wlc->hw->d11core,
 474                           "wl: brcms_ops_stop: chipmatch failed\n");
 475                 return;
 476         }
 477
 478         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 479
 480         /* put driver in down state */
 481         spin_lock_bh(&wl->lock);
 482         brcms_down(wl);
 483         spin_unlock_bh(&wl->lock);
 484 }
 485
 486 static int
 487 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 488 {
 489         struct brcms_info *wl = hw->priv;
 490
 491         /* Just STA, AP and ADHOC for now */
 492         if (vif->type != NL80211_IFTYPE_STATION &&
 493             vif->type != NL80211_IFTYPE_AP &&
 494             vif->type != NL80211_IFTYPE_ADHOC) {
 495                 brcms_err(wl->wlc->hw->d11core,
 496                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 497                           __func__, vif->type);
 498                 return -EOPNOTSUPP;
 499         }
 500
 501         spin_lock_bh(&wl->lock);
 502         wl->wlc->vif = vif;
 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         struct brcms_info *wl = hw->priv;
 521
 522         spin_lock_bh(&wl->lock);
 523         wl->wlc->vif = NULL;
 524         spin_unlock_bh(&wl->lock);
 525 }
 526
 527 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 528 {
 529         struct ieee80211_conf *conf = &hw->conf;
 530         struct brcms_info *wl = hw->priv;
 531         struct bcma_device *core = wl->wlc->hw->d11core;
 532         int err = 0;
 533         int new_int;
 534
 535         spin_lock_bh(&wl->lock);
 536         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 537                 brcms_c_set_beacon_listen_interval(wl->wlc,
 538                                                    conf->listen_interval);
 539         }
 540         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 541                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 542                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 543                                "true" : "false");
 544         if (changed & IEEE80211_CONF_CHANGE_PS)
 545                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 546                           __func__, conf->flags & IEEE80211_CONF_PS ?
 547                           "true" : "false");
 548
 549         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 550                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 551                 if (err < 0) {
 552                         brcms_err(core, "%s: Error setting power_level\n",
 553                                   __func__);
 554                         goto config_out;
 555                 }
 556                 new_int = brcms_c_get_tx_power(wl->wlc);
 557                 if (new_int != conf->power_level)
 558                         brcms_err(core,
 559                                   "%s: Power level req != actual, %d %d\n",
 560                                   __func__, conf->power_level,
 561                                   new_int);
 562         }
 563         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 564                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 565                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 566                         err = brcms_c_set_channel(wl->wlc,
 567                                                   conf->chandef.chan->hw_value);
 568                 else
 569                         err = -ENOTSUPP;
 570         }
 571         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 572                 err = brcms_c_set_rate_limit(wl->wlc,
 573                                              conf->short_frame_max_tx_count,
 574                                              conf->long_frame_max_tx_count);
 575
 576  config_out:
 577         spin_unlock_bh(&wl->lock);
 578         return err;
 579 }
 580
 581 static void
 582 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 583                         struct ieee80211_vif *vif,
 584                         struct ieee80211_bss_conf *info, u32 changed)
 585 {
 586         struct brcms_info *wl = hw->priv;
 587         struct bcma_device *core = wl->wlc->hw->d11core;
 588
 589         if (changed & BSS_CHANGED_ASSOC) {
 590                 /* association status changed (associated/disassociated)
 591                  * also implies a change in the AID.
 592                  */
 593                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 594                           __func__, info->assoc ? "" : "dis");
 595                 spin_lock_bh(&wl->lock);
 596                 brcms_c_associate_upd(wl->wlc, info->assoc);
 597                 spin_unlock_bh(&wl->lock);
 598         }
 599         if (changed & BSS_CHANGED_ERP_SLOT) {
 600                 s8 val;
 601
 602                 /* slot timing changed */
 603                 if (info->use_short_slot)
 604                         val = 1;
 605                 else
 606                         val = 0;
 607                 spin_lock_bh(&wl->lock);
 608                 brcms_c_set_shortslot_override(wl->wlc, val);
 609                 spin_unlock_bh(&wl->lock);
 610         }
 611
 612         if (changed & BSS_CHANGED_HT) {
 613                 /* 802.11n parameters changed */
 614                 u16 mode = info->ht_operation_mode;
 615
 616                 spin_lock_bh(&wl->lock);
 617                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 618                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 619                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 620                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 621                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 622                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 623                 spin_unlock_bh(&wl->lock);
 624         }
 625         if (changed & BSS_CHANGED_BASIC_RATES) {
 626                 struct ieee80211_supported_band *bi;
 627                 u32 br_mask, i;
 628                 u16 rate;
 629                 struct brcm_rateset rs;
 630                 int error;
 631
 632                 /* retrieve the current rates */
 633                 spin_lock_bh(&wl->lock);
 634                 brcms_c_get_current_rateset(wl->wlc, &rs);
 635                 spin_unlock_bh(&wl->lock);
 636
 637                 br_mask = info->basic_rates;
 638                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 639                 for (i = 0; i < bi->n_bitrates; i++) {
 640                         /* convert to internal rate value */
 641                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 642
 643                         /* set/clear basic rate flag */
 644                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 645                         br_mask >>= 1;
 646                 }
 647
 648                 /* update the rate set */
 649                 spin_lock_bh(&wl->lock);
 650                 error = brcms_c_set_rateset(wl->wlc, &rs);
 651                 spin_unlock_bh(&wl->lock);
 652                 if (error)
 653                         brcms_err(core, "changing basic rates failed: %d\n",
 654                                   error);
 655         }
 656         if (changed & BSS_CHANGED_BEACON_INT) {
 657                 /* Beacon interval changed */
 658                 spin_lock_bh(&wl->lock);
 659                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 660                 spin_unlock_bh(&wl->lock);
 661         }
 662         if (changed & BSS_CHANGED_BSSID) {
 663                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 664                 spin_lock_bh(&wl->lock);
 665                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 666                 spin_unlock_bh(&wl->lock);
 667         }
 668         if (changed & BSS_CHANGED_SSID) {
 669                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 670                 spin_lock_bh(&wl->lock);
 671                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 672                 spin_unlock_bh(&wl->lock);
 673         }
 674         if (changed & BSS_CHANGED_BEACON) {
 675                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 676                 struct sk_buff *beacon;
 677                 u16 tim_offset = 0;
 678
 679                 spin_lock_bh(&wl->lock);
 680                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 681                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 682                                        info->dtim_period);
 683                 spin_unlock_bh(&wl->lock);
 684         }
 685
 686         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 687                 struct sk_buff *probe_resp;
 688
 689                 spin_lock_bh(&wl->lock);
 690                 probe_resp = ieee80211_proberesp_get(hw, vif);
 691                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 692                 spin_unlock_bh(&wl->lock);
 693         }
 694
 695         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 696                 /* Beaconing should be enabled/disabled (beaconing modes) */
 697                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 698                           info->enable_beacon ? "true" : "false");
 699                 if (info->enable_beacon &&
 700                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 701                         brcms_c_enable_probe_resp(wl->wlc, true);
 702                 } else {
 703                         brcms_c_enable_probe_resp(wl->wlc, false);
 704                 }
 705         }
 706
 707         if (changed & BSS_CHANGED_CQM) {
 708                 /* Connection quality monitor config changed */
 709                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 710                           " (implement)\n", __func__, info->cqm_rssi_thold,
 711                           info->cqm_rssi_hyst);
 712         }
 713
 714         if (changed & BSS_CHANGED_IBSS) {
 715                 /* IBSS join status changed */
 716                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 717                           __func__, info->ibss_joined ? "true" : "false");
 718         }
 719
 720         if (changed & BSS_CHANGED_ARP_FILTER) {
 721                 /* Hardware ARP filter address list or state changed */
 722                 brcms_err(core, "%s: arp filtering: %d addresses"
 723                           " (implement)\n", __func__, info->arp_addr_cnt);
 724         }
 725
 726         if (changed & BSS_CHANGED_QOS) {
 727                 /*
 728                  * QoS for this association was enabled/disabled.
 729                  * Note that it is only ever disabled for station mode.
 730                  */
 731                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 732                           __func__, info->qos ? "true" : "false");
 733         }
 734         return;
 735 }
 736
 737 static void
 738 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 739                         unsigned int changed_flags,
 740                         unsigned int *total_flags, u64 multicast)
 741 {
 742         struct brcms_info *wl = hw->priv;
 743         struct bcma_device *core = wl->wlc->hw->d11core;
 744
 745         changed_flags &= MAC_FILTERS;
 746         *total_flags &= MAC_FILTERS;
 747
 748         if (changed_flags & FIF_ALLMULTI)
 749                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 750         if (changed_flags & FIF_FCSFAIL)
 751                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 752         if (changed_flags & FIF_CONTROL)
 753                 brcms_dbg_info(core, "FIF_CONTROL\n");
 754         if (changed_flags & FIF_OTHER_BSS)
 755                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 756         if (changed_flags & FIF_PSPOLL)
 757                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 758         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 759                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 760
 761         spin_lock_bh(&wl->lock);
 762         brcms_c_mac_promisc(wl->wlc, *total_flags);
 763         spin_unlock_bh(&wl->lock);
 764         return;
 765 }
 766
 767 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 768                                     struct ieee80211_vif *vif,
 769                                     const u8 *mac_addr)
 770 {
 771         struct brcms_info *wl = hw->priv;
 772         spin_lock_bh(&wl->lock);
 773         brcms_c_scan_start(wl->wlc);
 774         spin_unlock_bh(&wl->lock);
 775         return;
 776 }
 777
 778 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 779                                        struct ieee80211_vif *vif)
 780 {
 781         struct brcms_info *wl = hw->priv;
 782         spin_lock_bh(&wl->lock);
 783         brcms_c_scan_stop(wl->wlc);
 784         spin_unlock_bh(&wl->lock);
 785         return;
 786 }
 787
 788 static int
 789 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 790                   const struct ieee80211_tx_queue_params *params)
 791 {
 792         struct brcms_info *wl = hw->priv;
 793
 794         spin_lock_bh(&wl->lock);
 795         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 796         spin_unlock_bh(&wl->lock);
 797
 798         return 0;
 799 }
 800
 801 static int
 802 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 803                struct ieee80211_sta *sta)
 804 {
 805         struct brcms_info *wl = hw->priv;
 806         struct scb *scb = &wl->wlc->pri_scb;
 807
 808         brcms_c_init_scb(scb);
 809
 810         wl->pub->global_ampdu = &(scb->scb_ampdu);
 811         wl->pub->global_ampdu->scb = scb;
 812         wl->pub->global_ampdu->max_pdu = 16;
 813
 814         /*
 815          * minstrel_ht initiates addBA on our behalf by calling
 816          * ieee80211_start_tx_ba_session()
 817          */
 818         return 0;
 819 }
 820
 821 static int
 822 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 823                     struct ieee80211_vif *vif,
 824                     struct ieee80211_ampdu_params *params)
 825 {
 826         struct brcms_info *wl = hw->priv;
 827         struct scb *scb = &wl->wlc->pri_scb;
 828         int status;
 829         struct ieee80211_sta *sta = params->sta;
 830         enum ieee80211_ampdu_mlme_action action = params->action;
 831         u16 tid = params->tid;
 832         u8 buf_size = params->buf_size;
 833
 834         if (WARN_ON(scb->magic != SCB_MAGIC))
 835                 return -EIDRM;
 836         switch (action) {
 837         case IEEE80211_AMPDU_RX_START:
 838                 break;
 839         case IEEE80211_AMPDU_RX_STOP:
 840                 break;
 841         case IEEE80211_AMPDU_TX_START:
 842                 spin_lock_bh(&wl->lock);
 843                 status = brcms_c_aggregatable(wl->wlc, tid);
 844                 spin_unlock_bh(&wl->lock);
 845                 if (!status) {
 846                         brcms_dbg_ht(wl->wlc->hw->d11core,
 847                                      "START: tid %d is not agg\'able\n", tid);
 848                         return -EINVAL;
 849                 }
 850                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
 851
 852         case IEEE80211_AMPDU_TX_STOP_CONT:
 853         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 854         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 855                 spin_lock_bh(&wl->lock);
 856                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 857                 spin_unlock_bh(&wl->lock);
 858                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 859                 break;
 860         case IEEE80211_AMPDU_TX_OPERATIONAL:
 861                 /*
 862                  * BA window size from ADDBA response ('buf_size') defines how
 863                  * many outstanding MPDUs are allowed for the BA stream by
 864                  * recipient and traffic class. 'ampdu_factor' gives maximum
 865                  * AMPDU size.
 866                  */
 867                 spin_lock_bh(&wl->lock);
 868                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 869                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 870                          sta->deflink.ht_cap.ampdu_factor)) - 1);
 871                 spin_unlock_bh(&wl->lock);
 872                 /* Power save wakeup */
 873                 break;
 874         default:
 875                 brcms_err(wl->wlc->hw->d11core,
 876                           "%s: Invalid command, ignoring\n", __func__);
 877         }
 878
 879         return 0;
 880 }
 881
 882 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 883 {
 884         struct brcms_info *wl = hw->priv;
 885         bool blocked;
 886
 887         spin_lock_bh(&wl->lock);
 888         blocked = brcms_c_check_radio_disabled(wl->wlc);
 889         spin_unlock_bh(&wl->lock);
 890
 891         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 892 }
 893
 894 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 895 {
 896         bool result;
 897
 898         spin_lock_bh(&wl->lock);
 899         result = brcms_c_tx_flush_completed(wl->wlc);
 900         spin_unlock_bh(&wl->lock);
 901         return result;
 902 }
 903
 904 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 905                             u32 queues, bool drop)
 906 {
 907         struct brcms_info *wl = hw->priv;
 908         int ret;
 909
 910         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 911
 912         ret = wait_event_timeout(wl->tx_flush_wq,
 913                                  brcms_tx_flush_completed(wl),
 914                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 915
 916         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 917                            "ret=%d\n", jiffies_to_msecs(ret));
 918 }
 919
 920 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 921 {
 922         struct brcms_info *wl = hw->priv;
 923         u64 tsf;
 924
 925         spin_lock_bh(&wl->lock);
 926         tsf = brcms_c_tsf_get(wl->wlc);
 927         spin_unlock_bh(&wl->lock);
 928
 929         return tsf;
 930 }
 931
 932 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 933                            struct ieee80211_vif *vif, u64 tsf)
 934 {
 935         struct brcms_info *wl = hw->priv;
 936
 937         spin_lock_bh(&wl->lock);
 938         brcms_c_tsf_set(wl->wlc, tsf);
 939         spin_unlock_bh(&wl->lock);
 940 }
 941
 942 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 943                                  struct ieee80211_sta *sta, bool set)
 944 {
 945         struct brcms_info *wl = hw->priv;
 946         struct sk_buff *beacon = NULL;
 947         u16 tim_offset = 0;
 948
 949         spin_lock_bh(&wl->lock);
 950         if (wl->wlc->vif)
 951                 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 952                                                   &tim_offset, NULL);
 953         if (beacon)
 954                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 955                                        wl->wlc->vif->bss_conf.dtim_period);
 956         spin_unlock_bh(&wl->lock);
 957
 958         return 0;
 959 }
 960
 961 static const struct ieee80211_ops brcms_ops = {
 962         .tx = brcms_ops_tx,
 963         .start = brcms_ops_start,
 964         .stop = brcms_ops_stop,
 965         .add_interface = brcms_ops_add_interface,
 966         .remove_interface = brcms_ops_remove_interface,
 967         .config = brcms_ops_config,
 968         .bss_info_changed = brcms_ops_bss_info_changed,
 969         .configure_filter = brcms_ops_configure_filter,
 970         .sw_scan_start = brcms_ops_sw_scan_start,
 971         .sw_scan_complete = brcms_ops_sw_scan_complete,
 972         .conf_tx = brcms_ops_conf_tx,
 973         .sta_add = brcms_ops_sta_add,
 974         .ampdu_action = brcms_ops_ampdu_action,
 975         .rfkill_poll = brcms_ops_rfkill_poll,
 976         .flush = brcms_ops_flush,
 977         .get_tsf = brcms_ops_get_tsf,
 978         .set_tsf = brcms_ops_set_tsf,
 979         .set_tim = brcms_ops_beacon_set_tim,
 980 };
 981
 982 void brcms_dpc(struct tasklet_struct *t)
 983 {
 984         struct brcms_info *wl;
 985
 986         wl = from_tasklet(wl, t, tasklet);
 987
 988         spin_lock_bh(&wl->lock);
 989
 990         /* call the common second level interrupt handler */
 991         if (wl->pub->up) {
 992                 if (wl->resched) {
 993                         unsigned long flags;
 994
 995                         spin_lock_irqsave(&wl->isr_lock, flags);
 996                         brcms_c_intrsupd(wl->wlc);
 997                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 998                 }
 999
1000                 wl->resched = brcms_c_dpc(wl->wlc, true);
1001         }
1002
1003         /* brcms_c_dpc() may bring the driver down */
1004         if (!wl->pub->up)
1005                 goto done;
1006
1007         /* re-schedule dpc */
1008         if (wl->resched)
1009                 tasklet_schedule(&wl->tasklet);
1010         else
1011                 /* re-enable interrupts */
1012                 brcms_intrson(wl);
1013
1014  done:
1015         spin_unlock_bh(&wl->lock);
1016         wake_up(&wl->tx_flush_wq);
1017 }
1018
1019 static irqreturn_t brcms_isr(int irq, void *dev_id)
1020 {
1021         struct brcms_info *wl;
1022         irqreturn_t ret = IRQ_NONE;
1023
1024         wl = (struct brcms_info *) dev_id;
1025
1026         spin_lock(&wl->isr_lock);
1027
1028         /* call common first level interrupt handler */
1029         if (brcms_c_isr(wl->wlc)) {
1030                 /* schedule second level handler */
1031                 tasklet_schedule(&wl->tasklet);
1032                 ret = IRQ_HANDLED;
1033         }
1034
1035         spin_unlock(&wl->isr_lock);
1036
1037         return ret;
1038 }
1039
1040 /*
1041  * is called in brcms_pci_probe() context, therefore no locking required.
1042  */
1043 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1044 {
1045         struct brcms_info *wl = hw->priv;
1046         struct brcms_c_info *wlc = wl->wlc;
1047         struct ieee80211_supported_band *band;
1048         int has_5g = 0;
1049         u16 phy_type;
1050
1051         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1052         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1053
1054         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1055         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1056                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1057                 *band = brcms_band_2GHz_nphy_template;
1058                 if (phy_type == PHY_TYPE_LCN) {
1059                         /* Single stream */
1060                         band->ht_cap.mcs.rx_mask[1] = 0;
1061                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1062                 }
1063                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1064         } else {
1065                 return -EPERM;
1066         }
1067
1068         /* Assume all bands use the same phy.  True for 11n devices. */
1069         if (wl->pub->_nbands > 1) {
1070                 has_5g++;
1071                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1072                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1073                         *band = brcms_band_5GHz_nphy_template;
1074                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1075                 } else {
1076                         return -EPERM;
1077                 }
1078         }
1079         return 0;
1080 }
1081
1082 /*
1083  * is called in brcms_pci_probe() context, therefore no locking required.
1084  */
1085 static int ieee_hw_init(struct ieee80211_hw *hw)
1086 {
1087         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1088         ieee80211_hw_set(hw, SIGNAL_DBM);
1089         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1090
1091         hw->extra_tx_headroom = brcms_c_get_header_len();
1092         hw->queues = N_TX_QUEUES;
1093         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1094
1095         /* channel change time is dependent on chip and band  */
1096         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1097                                      BIT(NL80211_IFTYPE_AP) |
1098                                      BIT(NL80211_IFTYPE_ADHOC);
1099
1100         /*
1101          * deactivate sending probe responses by ucude, because this will
1102          * cause problems when WPS is used.
1103          *
1104          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1105          */
1106
1107         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1108
1109         hw->rate_control_algorithm = "minstrel_ht";
1110
1111         hw->sta_data_size = 0;
1112         return ieee_hw_rate_init(hw);
1113 }
1114
1115 /*
1116  * attach to the WL device.
1117  *
1118  * Attach to the WL device identified by vendor and device parameters.
1119  * regs is a host accessible memory address pointing to WL device registers.
1120  *
1121  * is called in brcms_bcma_probe() context, therefore no locking required.
1122  */
1123 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1124 {
1125         struct brcms_info *wl = NULL;
1126         int unit, err;
1127         struct ieee80211_hw *hw;
1128         u8 perm[ETH_ALEN];
1129
1130         unit = n_adapters_found;
1131         err = 0;
1132
1133         if (unit < 0)
1134                 return NULL;
1135
1136         /* allocate private info */
1137         hw = bcma_get_drvdata(pdev);
1138         if (hw != NULL)
1139                 wl = hw->priv;
1140         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1141                 return NULL;
1142         wl->wiphy = hw->wiphy;
1143
1144         atomic_set(&wl->callbacks, 0);
1145
1146         init_waitqueue_head(&wl->tx_flush_wq);
1147
1148         /* setup the bottom half handler */
1149         tasklet_setup(&wl->tasklet, brcms_dpc);
1150
1151         spin_lock_init(&wl->lock);
1152         spin_lock_init(&wl->isr_lock);
1153
1154         /* common load-time initialization */
1155         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1156         if (!wl->wlc) {
1157                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1158                           KBUILD_MODNAME, err);
1159                 goto fail;
1160         }
1161         wl->pub = brcms_c_pub(wl->wlc);
1162
1163         wl->pub->ieee_hw = hw;
1164
1165         /* register our interrupt handler */
1166         if (request_irq(pdev->irq, brcms_isr,
1167                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1168                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1169                 goto fail;
1170         }
1171         wl->irq = pdev->irq;
1172
1173         /* register module */
1174         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1175
1176         if (ieee_hw_init(hw)) {
1177                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1178                           __func__);
1179                 goto fail;
1180         }
1181
1182         brcms_c_regd_init(wl->wlc);
1183
1184         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1185         if (WARN_ON(!is_valid_ether_addr(perm)))
1186                 goto fail;
1187         SET_IEEE80211_PERM_ADDR(hw, perm);
1188
1189         err = ieee80211_register_hw(hw);
1190         if (err)
1191                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1192                           "%d\n", __func__, err);
1193
1194         if (wl->pub->srom_ccode[0] &&
1195             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1196                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1197
1198         brcms_debugfs_attach(wl->pub);
1199         brcms_debugfs_create_files(wl->pub);
1200         n_adapters_found++;
1201         return wl;
1202
1203 fail:
1204         brcms_free(wl);
1205         return NULL;
1206 }
1207
1208
1209
1210 /*
1211  * determines if a device is a WL device, and if so, attaches it.
1212  *
1213  * This function determines if a device pointed to by pdev is a WL device,
1214  * and if so, performs a brcms_attach() on it.
1215  *
1216  * Perimeter lock is initialized in the course of this function.
1217  */
1218 static int brcms_bcma_probe(struct bcma_device *pdev)
1219 {
1220         struct brcms_info *wl;
1221         struct ieee80211_hw *hw;
1222         int ret;
1223
1224         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1225                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1226                  pdev->irq);
1227
1228         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1229             (pdev->id.id != BCMA_CORE_80211))
1230                 return -ENODEV;
1231
1232         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1233         if (!hw) {
1234                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1235                 return -ENOMEM;
1236         }
1237
1238         SET_IEEE80211_DEV(hw, &pdev->dev);
1239
1240         bcma_set_drvdata(pdev, hw);
1241
1242         memset(hw->priv, 0, sizeof(*wl));
1243
1244         wl = brcms_attach(pdev);
1245         if (!wl) {
1246                 pr_err("%s: brcms_attach failed!\n", __func__);
1247                 ret = -ENODEV;
1248                 goto err_free_ieee80211;
1249         }
1250         brcms_led_register(wl);
1251
1252         return 0;
1253
1254 err_free_ieee80211:
1255         ieee80211_free_hw(hw);
1256         return ret;
1257 }
1258
1259 static int brcms_suspend(struct bcma_device *pdev)
1260 {
1261         struct brcms_info *wl;
1262         struct ieee80211_hw *hw;
1263
1264         hw = bcma_get_drvdata(pdev);
1265         wl = hw->priv;
1266         if (!wl) {
1267                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1268                        __func__);
1269                 return -ENODEV;
1270         }
1271
1272         /* only need to flag hw is down for proper resume */
1273         spin_lock_bh(&wl->lock);
1274         wl->pub->hw_up = false;
1275         spin_unlock_bh(&wl->lock);
1276
1277         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1278
1279         return 0;
1280 }
1281
1282 static int brcms_resume(struct bcma_device *pdev)
1283 {
1284         return 0;
1285 }
1286
1287 static struct bcma_driver brcms_bcma_driver = {
1288         .name     = KBUILD_MODNAME,
1289         .probe    = brcms_bcma_probe,
1290         .suspend  = brcms_suspend,
1291         .resume   = brcms_resume,
1292         .remove   = brcms_remove,
1293         .id_table = brcms_coreid_table,
1294 };
1295
1296 /*
1297  * This is the main entry point for the brcmsmac driver.
1298  *
1299  * This function is scheduled upon module initialization and
1300  * does the driver registration, which result in brcms_bcma_probe()
1301  * call resulting in the driver bringup.
1302  */
1303 static void brcms_driver_init(struct work_struct *work)
1304 {
1305         int error;
1306
1307         error = bcma_driver_register(&brcms_bcma_driver);
1308         if (error)
1309                 pr_err("%s: register returned %d\n", __func__, error);
1310 }
1311
1312 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1313
1314 static int __init brcms_module_init(void)
1315 {
1316         brcms_debugfs_init();
1317         if (!schedule_work(&brcms_driver_work))
1318                 return -EBUSY;
1319
1320         return 0;
1321 }
1322
1323 /*
1324  * This function unloads the brcmsmac driver from the system.
1325  *
1326  * This function unconditionally unloads the brcmsmac driver module from the
1327  * system.
1328  *
1329  */
1330 static void __exit brcms_module_exit(void)
1331 {
1332         cancel_work_sync(&brcms_driver_work);
1333         bcma_driver_unregister(&brcms_bcma_driver);
1334         brcms_debugfs_exit();
1335 }
1336
1337 module_init(brcms_module_init);
1338 module_exit(brcms_module_exit);
1339
1340 /*
1341  * precondition: perimeter lock has been acquired
1342  */
1343 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1344                          bool state, int prio)
1345 {
1346         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1347 }
1348
1349 /*
1350  * precondition: perimeter lock has been acquired
1351  */
1352 void brcms_init(struct brcms_info *wl)
1353 {
1354         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1355                        wl->pub->unit);
1356         brcms_reset(wl);
1357         brcms_c_init(wl->wlc, wl->mute_tx);
1358 }
1359
1360 /*
1361  * precondition: perimeter lock has been acquired
1362  */
1363 uint brcms_reset(struct brcms_info *wl)
1364 {
1365         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1366         brcms_c_reset(wl->wlc);
1367
1368         /* dpc will not be rescheduled */
1369         wl->resched = false;
1370
1371         /* inform publicly that interface is down */
1372         wl->pub->up = false;
1373
1374         return 0;
1375 }
1376
1377 void brcms_fatal_error(struct brcms_info *wl)
1378 {
1379         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1380                   wl->wlc->pub->unit);
1381         brcms_reset(wl);
1382         ieee80211_restart_hw(wl->pub->ieee_hw);
1383 }
1384
1385 /*
1386  * These are interrupt on/off entry points. Disable interrupts
1387  * during interrupt state transition.
1388  */
1389 void brcms_intrson(struct brcms_info *wl)
1390 {
1391         unsigned long flags;
1392
1393         spin_lock_irqsave(&wl->isr_lock, flags);
1394         brcms_c_intrson(wl->wlc);
1395         spin_unlock_irqrestore(&wl->isr_lock, flags);
1396 }
1397
1398 u32 brcms_intrsoff(struct brcms_info *wl)
1399 {
1400         unsigned long flags;
1401         u32 status;
1402
1403         spin_lock_irqsave(&wl->isr_lock, flags);
1404         status = brcms_c_intrsoff(wl->wlc);
1405         spin_unlock_irqrestore(&wl->isr_lock, flags);
1406         return status;
1407 }
1408
1409 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1410 {
1411         unsigned long flags;
1412
1413         spin_lock_irqsave(&wl->isr_lock, flags);
1414         brcms_c_intrsrestore(wl->wlc, macintmask);
1415         spin_unlock_irqrestore(&wl->isr_lock, flags);
1416 }
1417
1418 /*
1419  * precondition: perimeter lock has been acquired
1420  */
1421 int brcms_up(struct brcms_info *wl)
1422 {
1423         int error = 0;
1424
1425         if (wl->pub->up)
1426                 return 0;
1427
1428         error = brcms_c_up(wl->wlc);
1429
1430         return error;
1431 }
1432
1433 /*
1434  * precondition: perimeter lock has been acquired
1435  */
1436 void brcms_down(struct brcms_info *wl)
1437         __must_hold(&wl->lock)
1438 {
1439         uint callbacks, ret_val = 0;
1440
1441         /* call common down function */
1442         ret_val = brcms_c_down(wl->wlc);
1443         callbacks = atomic_read(&wl->callbacks) - ret_val;
1444
1445         /* wait for down callbacks to complete */
1446         spin_unlock_bh(&wl->lock);
1447
1448         /* For HIGH_only driver, it's important to actually schedule other work,
1449          * not just spin wait since everything runs at schedule level
1450          */
1451         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1452
1453         spin_lock_bh(&wl->lock);
1454 }
1455
1456 /*
1457 * precondition: perimeter lock is not acquired
1458  */
1459 static void _brcms_timer(struct work_struct *work)
1460 {
1461         struct brcms_timer *t = container_of(work, struct brcms_timer,
1462                                              dly_wrk.work);
1463
1464         spin_lock_bh(&t->wl->lock);
1465
1466         if (t->set) {
1467                 if (t->periodic) {
1468                         atomic_inc(&t->wl->callbacks);
1469                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1470                                                      &t->dly_wrk,
1471                                                      msecs_to_jiffies(t->ms));
1472                 } else {
1473                         t->set = false;
1474                 }
1475
1476                 t->fn(t->arg);
1477         }
1478
1479         atomic_dec(&t->wl->callbacks);
1480
1481         spin_unlock_bh(&t->wl->lock);
1482 }
1483
1484 /*
1485  * Adds a timer to the list. Caller supplies a timer function.
1486  * Is called from wlc.
1487  *
1488  * precondition: perimeter lock has been acquired
1489  */
1490 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1491                                      void (*fn) (void *arg),
1492                                      void *arg, const char *name)
1493 {
1494         struct brcms_timer *t;
1495
1496         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1497         if (!t)
1498                 return NULL;
1499
1500         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1501         t->wl = wl;
1502         t->fn = fn;
1503         t->arg = arg;
1504         t->next = wl->timers;
1505         wl->timers = t;
1506
1507 #ifdef DEBUG
1508         t->name = kstrdup(name, GFP_ATOMIC);
1509 #endif
1510
1511         return t;
1512 }
1513
1514 /*
1515  * adds only the kernel timer since it's going to be more accurate
1516  * as well as it's easier to make it periodic
1517  *
1518  * precondition: perimeter lock has been acquired
1519  */
1520 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1521 {
1522         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1523
1524 #ifdef DEBUG
1525         if (t->set)
1526                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1527                                "%s: Already set. Name: %s, per %d\n",
1528                                __func__, t->name, periodic);
1529 #endif
1530         t->ms = ms;
1531         t->periodic = (bool) periodic;
1532         if (!t->set) {
1533                 t->set = true;
1534                 atomic_inc(&t->wl->callbacks);
1535         }
1536
1537         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1538 }
1539
1540 /*
1541  * return true if timer successfully deleted, false if still pending
1542  *
1543  * precondition: perimeter lock has been acquired
1544  */
1545 bool brcms_del_timer(struct brcms_timer *t)
1546 {
1547         if (t->set) {
1548                 t->set = false;
1549                 if (!cancel_delayed_work(&t->dly_wrk))
1550                         return false;
1551
1552                 atomic_dec(&t->wl->callbacks);
1553         }
1554
1555         return true;
1556 }
1557
1558 /*
1559  * precondition: perimeter lock has been acquired
1560  */
1561 void brcms_free_timer(struct brcms_timer *t)
1562 {
1563         struct brcms_info *wl = t->wl;
1564         struct brcms_timer *tmp;
1565
1566         /* delete the timer in case it is active */
1567         brcms_del_timer(t);
1568
1569         if (wl->timers == t) {
1570                 wl->timers = wl->timers->next;
1571 #ifdef DEBUG
1572                 kfree(t->name);
1573 #endif
1574                 kfree(t);
1575                 return;
1576
1577         }
1578
1579         tmp = wl->timers;
1580         while (tmp) {
1581                 if (tmp->next == t) {
1582                         tmp->next = t->next;
1583 #ifdef DEBUG
1584                         kfree(t->name);
1585 #endif
1586                         kfree(t);
1587                         return;
1588                 }
1589                 tmp = tmp->next;
1590         }
1591
1592 }
1593
1594 /*
1595  * precondition: no locking required
1596  */
1597 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1598 {
1599         int i, entry;
1600         const u8 *pdata;
1601         struct firmware_hdr *hdr;
1602         for (i = 0; i < wl->fw.fw_cnt; i++) {
1603                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1604                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1605                      entry++, hdr++) {
1606                         u32 len = le32_to_cpu(hdr->len);
1607                         if (le32_to_cpu(hdr->idx) == idx) {
1608                                 pdata = wl->fw.fw_bin[i]->data +
1609                                         le32_to_cpu(hdr->offset);
1610                                 *pbuf = kvmalloc(len, GFP_KERNEL);
1611                                 if (*pbuf == NULL)
1612                                         goto fail;
1613                                 memcpy(*pbuf, pdata, len);
1614                                 return 0;
1615                         }
1616                 }
1617         }
1618         brcms_err(wl->wlc->hw->d11core,
1619                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1620         *pbuf = NULL;
1621 fail:
1622         return -ENODATA;
1623 }
1624
1625 /*
1626  * Precondition: Since this function is called in brcms_bcma_probe() context,
1627  * no locking is required.
1628  */
1629 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1630 {
1631         int i, entry;
1632         const u8 *pdata;
1633         struct firmware_hdr *hdr;
1634         for (i = 0; i < wl->fw.fw_cnt; i++) {
1635                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1636                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1637                      entry++, hdr++) {
1638                         if (le32_to_cpu(hdr->idx) == idx) {
1639                                 pdata = wl->fw.fw_bin[i]->data +
1640                                         le32_to_cpu(hdr->offset);
1641                                 if (le32_to_cpu(hdr->len) != 4) {
1642                                         brcms_err(wl->wlc->hw->d11core,
1643                                                   "ERROR: fw hdr len\n");
1644                                         return -ENOMSG;
1645                                 }
1646                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1647                                 return 0;
1648                         }
1649                 }
1650         }
1651         brcms_err(wl->wlc->hw->d11core,
1652                   "ERROR: ucode tag:%d can not be found!\n", idx);
1653         return -ENOMSG;
1654 }
1655
1656 /*
1657  * precondition: can both be called locked and unlocked
1658  */
1659 void brcms_ucode_free_buf(void *p)
1660 {
1661         kvfree(p);
1662 }
1663
1664 /*
1665  * checks validity of all firmware images loaded from user space
1666  *
1667  * Precondition: Since this function is called in brcms_bcma_probe() context,
1668  * no locking is required.
1669  */
1670 int brcms_check_firmwares(struct brcms_info *wl)
1671 {
1672         int i;
1673         int entry;
1674         int rc = 0;
1675         const struct firmware *fw;
1676         const struct firmware *fw_hdr;
1677         struct firmware_hdr *ucode_hdr;
1678         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1679                 fw =  wl->fw.fw_bin[i];
1680                 fw_hdr = wl->fw.fw_hdr[i];
1681                 if (fw == NULL && fw_hdr == NULL) {
1682                         break;
1683                 } else if (fw == NULL || fw_hdr == NULL) {
1684                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1685                                   __func__);
1686                         rc = -EBADF;
1687                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1688                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1689                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1690                                 sizeof(struct firmware_hdr));
1691                         rc = -EBADF;
1692                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1693                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1694                                   __func__, fw->size);
1695                         rc = -EBADF;
1696                 } else {
1697                         /* check if ucode section overruns firmware image */
1698                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1699                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1700                              !rc; entry++, ucode_hdr++) {
1701                                 if (le32_to_cpu(ucode_hdr->offset) +
1702                                     le32_to_cpu(ucode_hdr->len) >
1703                                     fw->size) {
1704                                         wiphy_err(wl->wiphy,
1705                                                   "%s: conflicting bin/hdr\n",
1706                                                   __func__);
1707                                         rc = -EBADF;
1708                                 }
1709                         }
1710                 }
1711         }
1712         if (rc == 0 && wl->fw.fw_cnt != i) {
1713                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1714                         wl->fw.fw_cnt);
1715                 rc = -EBADF;
1716         }
1717         return rc;
1718 }
1719
1720 /*
1721  * precondition: perimeter lock has been acquired
1722  */
1723 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1724         __must_hold(&wl->lock)
1725 {
1726         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1727
1728         spin_unlock_bh(&wl->lock);
1729         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1730         if (blocked)
1731                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1732         spin_lock_bh(&wl->lock);
1733         return blocked;
1734 }