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

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <[email protected]>
   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         "brcm/bcm43xx",
  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 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  93 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  94
  95 /* recognized BCMA Core IDs */
  96 static struct bcma_device_id brcms_coreid_table[] = {
  97         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 100         {},
 101 };
 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 103
 104 #if defined(CONFIG_BRCMDBG)
 105 /*
 106  * Module parameter for setting the debug message level. Available
 107  * flags are specified by the BRCM_DL_* macros in
 108  * drivers/net/wireless/brcm80211/include/defs.h.
 109  */
 110 module_param_named(debug, brcm_msg_level, uint, 0644);
 111 #endif
 112
 113 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 114         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 115         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(5, 2432, 0),
 119         CHAN2GHZ(6, 2437, 0),
 120         CHAN2GHZ(7, 2442, 0),
 121         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(12, 2467,
 126                  IEEE80211_CHAN_NO_IR |
 127                  IEEE80211_CHAN_NO_HT40PLUS),
 128         CHAN2GHZ(13, 2472,
 129                  IEEE80211_CHAN_NO_IR |
 130                  IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN2GHZ(14, 2484,
 132                  IEEE80211_CHAN_NO_IR |
 133                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 134                  IEEE80211_CHAN_NO_OFDM)
 135 };
 136
 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 138         /* UNII-1 */
 139         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 140         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 143         /* UNII-2 */
 144         CHAN5GHZ(52,
 145                  IEEE80211_CHAN_RADAR |
 146                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 147         CHAN5GHZ(56,
 148                  IEEE80211_CHAN_RADAR |
 149                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 150         CHAN5GHZ(60,
 151                  IEEE80211_CHAN_RADAR |
 152                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 153         CHAN5GHZ(64,
 154                  IEEE80211_CHAN_RADAR |
 155                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 156         /* MID */
 157         CHAN5GHZ(100,
 158                  IEEE80211_CHAN_RADAR |
 159                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 160         CHAN5GHZ(104,
 161                  IEEE80211_CHAN_RADAR |
 162                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 163         CHAN5GHZ(108,
 164                  IEEE80211_CHAN_RADAR |
 165                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 166         CHAN5GHZ(112,
 167                  IEEE80211_CHAN_RADAR |
 168                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 169         CHAN5GHZ(116,
 170                  IEEE80211_CHAN_RADAR |
 171                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 172         CHAN5GHZ(120,
 173                  IEEE80211_CHAN_RADAR |
 174                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 175         CHAN5GHZ(124,
 176                  IEEE80211_CHAN_RADAR |
 177                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 178         CHAN5GHZ(128,
 179                  IEEE80211_CHAN_RADAR |
 180                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 181         CHAN5GHZ(132,
 182                  IEEE80211_CHAN_RADAR |
 183                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(136,
 185                  IEEE80211_CHAN_RADAR |
 186                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(140,
 188                  IEEE80211_CHAN_RADAR |
 189                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 190                  IEEE80211_CHAN_NO_HT40MINUS),
 191         /* UNII-3 */
 192         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 193         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 194         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 197 };
 198
 199 /*
 200  * The rate table is used for both 2.4G and 5G rates. The
 201  * latter being a subset as it does not support CCK rates.
 202  */
 203 static struct ieee80211_rate legacy_ratetable[] = {
 204         RATE(10, 0),
 205         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 206         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(60, 0),
 209         RATE(90, 0),
 210         RATE(120, 0),
 211         RATE(180, 0),
 212         RATE(240, 0),
 213         RATE(360, 0),
 214         RATE(480, 0),
 215         RATE(540, 0),
 216 };
 217
 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 219         .band = NL80211_BAND_2GHZ,
 220         .channels = brcms_2ghz_chantable,
 221         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 222         .bitrates = legacy_ratetable,
 223         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 224         .ht_cap = {
 225                    /* from include/linux/ieee80211.h */
 226                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 227                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 228                    .ht_supported = true,
 229                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 230                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 231                    .mcs = {
 232                            /* placeholders for now */
 233                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 234                            .rx_highest = cpu_to_le16(500),
 235                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 236                    }
 237 };
 238
 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 240         .band = NL80211_BAND_5GHZ,
 241         .channels = brcms_5ghz_nphy_chantable,
 242         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 243         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 244         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 245                         BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .ht_cap = {
 247                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 248                           IEEE80211_HT_CAP_SGI_40,
 249                    .ht_supported = true,
 250                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 251                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 252                    .mcs = {
 253                            /* placeholders for now */
 254                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 255                            .rx_highest = cpu_to_le16(500),
 256                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 257                    }
 258 };
 259
 260 /* flags the given rate in rateset as requested */
 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 262 {
 263         u32 i;
 264
 265         for (i = 0; i < rs->count; i++) {
 266                 if (rate != (rs->rates[i] & 0x7f))
 267                         continue;
 268
 269                 if (is_br)
 270                         rs->rates[i] |= BRCMS_RATE_FLAG;
 271                 else
 272                         rs->rates[i] &= BRCMS_RATE_MASK;
 273                 return;
 274         }
 275 }
 276
 277 /*
 278  * This function frees the WL per-device resources.
 279  *
 280  * This function frees resources owned by the WL device pointed to
 281  * by the wl parameter.
 282  *
 283  * precondition: can both be called locked and unlocked
 284  */
 285 static void brcms_free(struct brcms_info *wl)
 286 {
 287         struct brcms_timer *t, *next;
 288
 289         /* free ucode data */
 290         if (wl->fw.fw_cnt)
 291                 brcms_ucode_data_free(&wl->ucode);
 292         if (wl->irq)
 293                 free_irq(wl->irq, wl);
 294
 295         /* kill dpc */
 296         tasklet_kill(&wl->tasklet);
 297
 298         if (wl->pub) {
 299                 brcms_debugfs_detach(wl->pub);
 300                 brcms_c_module_unregister(wl->pub, "linux", wl);
 301         }
 302
 303         /* free common resources */
 304         if (wl->wlc) {
 305                 brcms_c_detach(wl->wlc);
 306                 wl->wlc = NULL;
 307                 wl->pub = NULL;
 308         }
 309
 310         /* virtual interface deletion is deferred so we cannot spinwait */
 311
 312         /* wait for all pending callbacks to complete */
 313         while (atomic_read(&wl->callbacks) > 0)
 314                 schedule();
 315
 316         /* free timers */
 317         for (t = wl->timers; t; t = next) {
 318                 next = t->next;
 319 #ifdef DEBUG
 320                 kfree(t->name);
 321 #endif
 322                 kfree(t);
 323         }
 324 }
 325
 326 /*
 327 * called from both kernel as from this kernel module (error flow on attach)
 328 * precondition: perimeter lock is not acquired.
 329 */
 330 static void brcms_remove(struct bcma_device *pdev)
 331 {
 332         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 333         struct brcms_info *wl = hw->priv;
 334
 335         if (wl->wlc) {
 336                 brcms_led_unregister(wl);
 337                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 338                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 339                 ieee80211_unregister_hw(hw);
 340         }
 341
 342         brcms_free(wl);
 343
 344         bcma_set_drvdata(pdev, NULL);
 345         ieee80211_free_hw(hw);
 346 }
 347
 348 /*
 349  * Precondition: Since this function is called in brcms_pci_probe() context,
 350  * no locking is required.
 351  */
 352 static void brcms_release_fw(struct brcms_info *wl)
 353 {
 354         int i;
 355         for (i = 0; i < MAX_FW_IMAGES; i++) {
 356                 release_firmware(wl->fw.fw_bin[i]);
 357                 release_firmware(wl->fw.fw_hdr[i]);
 358         }
 359 }
 360
 361 /*
 362  * Precondition: Since this function is called in brcms_pci_probe() context,
 363  * no locking is required.
 364  */
 365 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 366 {
 367         int status;
 368         struct device *device = &pdev->dev;
 369         char fw_name[100];
 370         int i;
 371
 372         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 373         for (i = 0; i < MAX_FW_IMAGES; i++) {
 374                 if (brcms_firmwares[i] == NULL)
 375                         break;
 376                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 377                         UCODE_LOADER_API_VER);
 378                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 379                 if (status) {
 380                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 381                                   KBUILD_MODNAME, fw_name);
 382                         return status;
 383                 }
 384                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 385                         UCODE_LOADER_API_VER);
 386                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 387                 if (status) {
 388                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 389                                   KBUILD_MODNAME, fw_name);
 390                         return status;
 391                 }
 392                 wl->fw.hdr_num_entries[i] =
 393                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 394         }
 395         wl->fw.fw_cnt = i;
 396         status = brcms_ucode_data_init(wl, &wl->ucode);
 397         brcms_release_fw(wl);
 398         return status;
 399 }
 400
 401 static void brcms_ops_tx(struct ieee80211_hw *hw,
 402                          struct ieee80211_tx_control *control,
 403                          struct sk_buff *skb)
 404 {
 405         struct brcms_info *wl = hw->priv;
 406         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 407
 408         spin_lock_bh(&wl->lock);
 409         if (!wl->pub->up) {
 410                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 411                 kfree_skb(skb);
 412                 goto done;
 413         }
 414         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 415                 tx_info->rate_driver_data[0] = control->sta;
 416  done:
 417         spin_unlock_bh(&wl->lock);
 418 }
 419
 420 static int brcms_ops_start(struct ieee80211_hw *hw)
 421 {
 422         struct brcms_info *wl = hw->priv;
 423         bool blocked;
 424         int err;
 425
 426         if (!wl->ucode.bcm43xx_bomminor) {
 427                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 428                 if (err)
 429                         return -ENOENT;
 430         }
 431
 432         ieee80211_wake_queues(hw);
 433         spin_lock_bh(&wl->lock);
 434         blocked = brcms_rfkill_set_hw_state(wl);
 435         spin_unlock_bh(&wl->lock);
 436         if (!blocked)
 437                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 438
 439         spin_lock_bh(&wl->lock);
 440         /* avoid acknowledging frames before a non-monitor device is added */
 441         wl->mute_tx = true;
 442
 443         if (!wl->pub->up)
 444                 if (!blocked)
 445                         err = brcms_up(wl);
 446                 else
 447                         err = -ERFKILL;
 448         else
 449                 err = -ENODEV;
 450         spin_unlock_bh(&wl->lock);
 451
 452         if (err != 0)
 453                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 454                           __func__, err);
 455
 456         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 457         return err;
 458 }
 459
 460 static void brcms_ops_stop(struct ieee80211_hw *hw, bool suspend)
 461 {
 462         struct brcms_info *wl = hw->priv;
 463         int status;
 464
 465         ieee80211_stop_queues(hw);
 466
 467         if (wl->wlc == NULL)
 468                 return;
 469
 470         spin_lock_bh(&wl->lock);
 471         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 472         spin_unlock_bh(&wl->lock);
 473         if (!status) {
 474                 brcms_err(wl->wlc->hw->d11core,
 475                           "wl: brcms_ops_stop: chipmatch failed\n");
 476                 return;
 477         }
 478
 479         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 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->wlc->vif = vif;
 504         wl->mute_tx = false;
 505         brcms_c_mute(wl->wlc, false);
 506         if (vif->type == NL80211_IFTYPE_STATION)
 507                 brcms_c_start_station(wl->wlc, vif->addr);
 508         else if (vif->type == NL80211_IFTYPE_AP)
 509                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 510                                  vif->cfg.ssid, vif->cfg.ssid_len);
 511         else if (vif->type == NL80211_IFTYPE_ADHOC)
 512                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 513         spin_unlock_bh(&wl->lock);
 514
 515         return 0;
 516 }
 517
 518 static void
 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 520 {
 521         struct brcms_info *wl = hw->priv;
 522
 523         spin_lock_bh(&wl->lock);
 524         wl->wlc->vif = NULL;
 525         spin_unlock_bh(&wl->lock);
 526 }
 527
 528 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 529 {
 530         struct ieee80211_conf *conf = &hw->conf;
 531         struct brcms_info *wl = hw->priv;
 532         struct bcma_device *core = wl->wlc->hw->d11core;
 533         int err = 0;
 534         int new_int;
 535
 536         spin_lock_bh(&wl->lock);
 537         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 538                 brcms_c_set_beacon_listen_interval(wl->wlc,
 539                                                    conf->listen_interval);
 540         }
 541         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 542                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 543                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 544                                "true" : "false");
 545         if (changed & IEEE80211_CONF_CHANGE_PS)
 546                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 547                           __func__, conf->flags & IEEE80211_CONF_PS ?
 548                           "true" : "false");
 549
 550         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 551                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 552                 if (err < 0) {
 553                         brcms_err(core, "%s: Error setting power_level\n",
 554                                   __func__);
 555                         goto config_out;
 556                 }
 557                 new_int = brcms_c_get_tx_power(wl->wlc);
 558                 if (new_int != conf->power_level)
 559                         brcms_err(core,
 560                                   "%s: Power level req != actual, %d %d\n",
 561                                   __func__, conf->power_level,
 562                                   new_int);
 563         }
 564         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 565                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 566                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 567                         err = brcms_c_set_channel(wl->wlc,
 568                                                   conf->chandef.chan->hw_value);
 569                 else
 570                         err = -ENOTSUPP;
 571         }
 572         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 573                 err = brcms_c_set_rate_limit(wl->wlc,
 574                                              conf->short_frame_max_tx_count,
 575                                              conf->long_frame_max_tx_count);
 576
 577  config_out:
 578         spin_unlock_bh(&wl->lock);
 579         return err;
 580 }
 581
 582 static void
 583 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 584                         struct ieee80211_vif *vif,
 585                         struct ieee80211_bss_conf *info, u64 changed)
 586 {
 587         struct brcms_info *wl = hw->priv;
 588         struct bcma_device *core = wl->wlc->hw->d11core;
 589
 590         if (changed & BSS_CHANGED_ASSOC) {
 591                 /* association status changed (associated/disassociated)
 592                  * also implies a change in the AID.
 593                  */
 594                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 595                           __func__, vif->cfg.assoc ? "" : "dis");
 596                 spin_lock_bh(&wl->lock);
 597                 brcms_c_associate_upd(wl->wlc, vif->cfg.assoc);
 598                 spin_unlock_bh(&wl->lock);
 599         }
 600         if (changed & BSS_CHANGED_ERP_SLOT) {
 601                 s8 val;
 602
 603                 /* slot timing changed */
 604                 if (info->use_short_slot)
 605                         val = 1;
 606                 else
 607                         val = 0;
 608                 spin_lock_bh(&wl->lock);
 609                 brcms_c_set_shortslot_override(wl->wlc, val);
 610                 spin_unlock_bh(&wl->lock);
 611         }
 612
 613         if (changed & BSS_CHANGED_HT) {
 614                 /* 802.11n parameters changed */
 615                 u16 mode = info->ht_operation_mode;
 616
 617                 spin_lock_bh(&wl->lock);
 618                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 619                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 620                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 621                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 622                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 623                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 624                 spin_unlock_bh(&wl->lock);
 625         }
 626         if (changed & BSS_CHANGED_BASIC_RATES) {
 627                 struct ieee80211_supported_band *bi;
 628                 u32 br_mask, i;
 629                 u16 rate;
 630                 struct brcm_rateset rs;
 631                 int error;
 632
 633                 /* retrieve the current rates */
 634                 spin_lock_bh(&wl->lock);
 635                 brcms_c_get_current_rateset(wl->wlc, &rs);
 636                 spin_unlock_bh(&wl->lock);
 637
 638                 br_mask = info->basic_rates;
 639                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 640                 for (i = 0; i < bi->n_bitrates; i++) {
 641                         /* convert to internal rate value */
 642                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 643
 644                         /* set/clear basic rate flag */
 645                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 646                         br_mask >>= 1;
 647                 }
 648
 649                 /* update the rate set */
 650                 spin_lock_bh(&wl->lock);
 651                 error = brcms_c_set_rateset(wl->wlc, &rs);
 652                 spin_unlock_bh(&wl->lock);
 653                 if (error)
 654                         brcms_err(core, "changing basic rates failed: %d\n",
 655                                   error);
 656         }
 657         if (changed & BSS_CHANGED_BEACON_INT) {
 658                 /* Beacon interval changed */
 659                 spin_lock_bh(&wl->lock);
 660                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 661                 spin_unlock_bh(&wl->lock);
 662         }
 663         if (changed & BSS_CHANGED_BSSID) {
 664                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 665                 spin_lock_bh(&wl->lock);
 666                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 667                 spin_unlock_bh(&wl->lock);
 668         }
 669         if (changed & BSS_CHANGED_SSID) {
 670                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 671                 spin_lock_bh(&wl->lock);
 672                 brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len);
 673                 spin_unlock_bh(&wl->lock);
 674         }
 675         if (changed & BSS_CHANGED_BEACON) {
 676                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 677                 struct sk_buff *beacon;
 678                 u16 tim_offset = 0;
 679
 680                 spin_lock_bh(&wl->lock);
 681                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0);
 682                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 683                                        info->dtim_period);
 684                 spin_unlock_bh(&wl->lock);
 685         }
 686
 687         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 688                 struct sk_buff *probe_resp;
 689
 690                 spin_lock_bh(&wl->lock);
 691                 probe_resp = ieee80211_proberesp_get(hw, vif);
 692                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 693                 spin_unlock_bh(&wl->lock);
 694         }
 695
 696         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 697                 /* Beaconing should be enabled/disabled (beaconing modes) */
 698                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 699                           info->enable_beacon ? "true" : "false");
 700                 if (info->enable_beacon &&
 701                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 702                         brcms_c_enable_probe_resp(wl->wlc, true);
 703                 } else {
 704                         brcms_c_enable_probe_resp(wl->wlc, false);
 705                 }
 706         }
 707
 708         if (changed & BSS_CHANGED_CQM) {
 709                 /* Connection quality monitor config changed */
 710                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 711                           " (implement)\n", __func__, info->cqm_rssi_thold,
 712                           info->cqm_rssi_hyst);
 713         }
 714
 715         if (changed & BSS_CHANGED_IBSS) {
 716                 /* IBSS join status changed */
 717                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 718                           __func__, vif->cfg.ibss_joined ? "true" : "false");
 719         }
 720
 721         if (changed & BSS_CHANGED_ARP_FILTER) {
 722                 /* Hardware ARP filter address list or state changed */
 723                 brcms_err(core, "%s: arp filtering: %d addresses"
 724                           " (implement)\n", __func__, vif->cfg.arp_addr_cnt);
 725         }
 726
 727         if (changed & BSS_CHANGED_QOS) {
 728                 /*
 729                  * QoS for this association was enabled/disabled.
 730                  * Note that it is only ever disabled for station mode.
 731                  */
 732                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 733                           __func__, info->qos ? "true" : "false");
 734         }
 735         return;
 736 }
 737
 738 static void
 739 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 740                         unsigned int changed_flags,
 741                         unsigned int *total_flags, u64 multicast)
 742 {
 743         struct brcms_info *wl = hw->priv;
 744         struct bcma_device *core = wl->wlc->hw->d11core;
 745
 746         changed_flags &= MAC_FILTERS;
 747         *total_flags &= MAC_FILTERS;
 748
 749         if (changed_flags & FIF_ALLMULTI)
 750                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 751         if (changed_flags & FIF_FCSFAIL)
 752                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 753         if (changed_flags & FIF_CONTROL)
 754                 brcms_dbg_info(core, "FIF_CONTROL\n");
 755         if (changed_flags & FIF_OTHER_BSS)
 756                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 757         if (changed_flags & FIF_PSPOLL)
 758                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 759         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 760                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 761
 762         spin_lock_bh(&wl->lock);
 763         brcms_c_mac_promisc(wl->wlc, *total_flags);
 764         spin_unlock_bh(&wl->lock);
 765         return;
 766 }
 767
 768 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 769                                     struct ieee80211_vif *vif,
 770                                     const u8 *mac_addr)
 771 {
 772         struct brcms_info *wl = hw->priv;
 773         spin_lock_bh(&wl->lock);
 774         brcms_c_scan_start(wl->wlc);
 775         spin_unlock_bh(&wl->lock);
 776         return;
 777 }
 778
 779 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 780                                        struct ieee80211_vif *vif)
 781 {
 782         struct brcms_info *wl = hw->priv;
 783         spin_lock_bh(&wl->lock);
 784         brcms_c_scan_stop(wl->wlc);
 785         spin_unlock_bh(&wl->lock);
 786         return;
 787 }
 788
 789 static int
 790 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 791                   unsigned int link_id, u16 queue,
 792                   const struct ieee80211_tx_queue_params *params)
 793 {
 794         struct brcms_info *wl = hw->priv;
 795
 796         spin_lock_bh(&wl->lock);
 797         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 798         spin_unlock_bh(&wl->lock);
 799
 800         return 0;
 801 }
 802
 803 static int
 804 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 805                struct ieee80211_sta *sta)
 806 {
 807         struct brcms_info *wl = hw->priv;
 808         struct scb *scb = &wl->wlc->pri_scb;
 809
 810         brcms_c_init_scb(scb);
 811
 812         wl->pub->global_ampdu = &(scb->scb_ampdu);
 813         wl->pub->global_ampdu->max_pdu = 16;
 814
 815         /*
 816          * minstrel_ht initiates addBA on our behalf by calling
 817          * ieee80211_start_tx_ba_session()
 818          */
 819         return 0;
 820 }
 821
 822 static int
 823 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 824                     struct ieee80211_vif *vif,
 825                     struct ieee80211_ampdu_params *params)
 826 {
 827         struct brcms_info *wl = hw->priv;
 828         struct scb *scb = &wl->wlc->pri_scb;
 829         int status;
 830         struct ieee80211_sta *sta = params->sta;
 831         enum ieee80211_ampdu_mlme_action action = params->action;
 832         u16 tid = params->tid;
 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 (this is actually unused by the
 865                  * rest of the driver). 'ampdu_factor' gives maximum AMPDU size.
 866                  */
 867                 spin_lock_bh(&wl->lock);
 868                 brcms_c_ampdu_tx_operational(wl->wlc, tid,
 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, 0);
 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         .add_chanctx = ieee80211_emulate_add_chanctx,
 963         .remove_chanctx = ieee80211_emulate_remove_chanctx,
 964         .change_chanctx = ieee80211_emulate_change_chanctx,
 965         .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
 966         .tx = brcms_ops_tx,
 967         .wake_tx_queue = ieee80211_handle_wake_tx_queue,
 968         .start = brcms_ops_start,
 969         .stop = brcms_ops_stop,
 970         .add_interface = brcms_ops_add_interface,
 971         .remove_interface = brcms_ops_remove_interface,
 972         .config = brcms_ops_config,
 973         .bss_info_changed = brcms_ops_bss_info_changed,
 974         .configure_filter = brcms_ops_configure_filter,
 975         .sw_scan_start = brcms_ops_sw_scan_start,
 976         .sw_scan_complete = brcms_ops_sw_scan_complete,
 977         .conf_tx = brcms_ops_conf_tx,
 978         .sta_add = brcms_ops_sta_add,
 979         .ampdu_action = brcms_ops_ampdu_action,
 980         .rfkill_poll = brcms_ops_rfkill_poll,
 981         .flush = brcms_ops_flush,
 982         .get_tsf = brcms_ops_get_tsf,
 983         .set_tsf = brcms_ops_set_tsf,
 984         .set_tim = brcms_ops_beacon_set_tim,
 985 };
 986
 987 void brcms_dpc(struct tasklet_struct *t)
 988 {
 989         struct brcms_info *wl;
 990
 991         wl = from_tasklet(wl, t, tasklet);
 992
 993         spin_lock_bh(&wl->lock);
 994
 995         /* call the common second level interrupt handler */
 996         if (wl->pub->up) {
 997                 if (wl->resched) {
 998                         unsigned long flags;
 999
1000                         spin_lock_irqsave(&wl->isr_lock, flags);
1001                         brcms_c_intrsupd(wl->wlc);
1002                         spin_unlock_irqrestore(&wl->isr_lock, flags);
1003                 }
1004
1005                 wl->resched = brcms_c_dpc(wl->wlc, true);
1006         }
1007
1008         /* brcms_c_dpc() may bring the driver down */
1009         if (!wl->pub->up)
1010                 goto done;
1011
1012         /* re-schedule dpc */
1013         if (wl->resched)
1014                 tasklet_schedule(&wl->tasklet);
1015         else
1016                 /* re-enable interrupts */
1017                 brcms_intrson(wl);
1018
1019  done:
1020         spin_unlock_bh(&wl->lock);
1021         wake_up(&wl->tx_flush_wq);
1022 }
1023
1024 static irqreturn_t brcms_isr(int irq, void *dev_id)
1025 {
1026         struct brcms_info *wl;
1027         irqreturn_t ret = IRQ_NONE;
1028
1029         wl = (struct brcms_info *) dev_id;
1030
1031         spin_lock(&wl->isr_lock);
1032
1033         /* call common first level interrupt handler */
1034         if (brcms_c_isr(wl->wlc)) {
1035                 /* schedule second level handler */
1036                 tasklet_schedule(&wl->tasklet);
1037                 ret = IRQ_HANDLED;
1038         }
1039
1040         spin_unlock(&wl->isr_lock);
1041
1042         return ret;
1043 }
1044
1045 /*
1046  * is called in brcms_pci_probe() context, therefore no locking required.
1047  */
1048 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1049 {
1050         struct brcms_info *wl = hw->priv;
1051         struct brcms_c_info *wlc = wl->wlc;
1052         struct ieee80211_supported_band *band;
1053         u16 phy_type;
1054
1055         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1056         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1057
1058         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1059         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1060                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1061                 *band = brcms_band_2GHz_nphy_template;
1062                 if (phy_type == PHY_TYPE_LCN) {
1063                         /* Single stream */
1064                         band->ht_cap.mcs.rx_mask[1] = 0;
1065                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1066                 }
1067                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1068         } else {
1069                 return -EPERM;
1070         }
1071
1072         /* Assume all bands use the same phy.  True for 11n devices. */
1073         if (wl->pub->_nbands > 1) {
1074                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1075                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1076                         *band = brcms_band_5GHz_nphy_template;
1077                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1078                 } else {
1079                         return -EPERM;
1080                 }
1081         }
1082         return 0;
1083 }
1084
1085 /*
1086  * is called in brcms_pci_probe() context, therefore no locking required.
1087  */
1088 static int ieee_hw_init(struct ieee80211_hw *hw)
1089 {
1090         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1091         ieee80211_hw_set(hw, SIGNAL_DBM);
1092         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1093         ieee80211_hw_set(hw, MFP_CAPABLE);
1094
1095         hw->extra_tx_headroom = brcms_c_get_header_len();
1096         hw->queues = N_TX_QUEUES;
1097         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1098
1099         /* channel change time is dependent on chip and band  */
1100         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1101                                      BIT(NL80211_IFTYPE_AP) |
1102                                      BIT(NL80211_IFTYPE_ADHOC);
1103
1104         /*
1105          * deactivate sending probe responses by ucude, because this will
1106          * cause problems when WPS is used.
1107          *
1108          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1109          */
1110
1111         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1112
1113         hw->rate_control_algorithm = "minstrel_ht";
1114
1115         hw->sta_data_size = 0;
1116         return ieee_hw_rate_init(hw);
1117 }
1118
1119 /*
1120  * attach to the WL device.
1121  *
1122  * Attach to the WL device identified by vendor and device parameters.
1123  * regs is a host accessible memory address pointing to WL device registers.
1124  *
1125  * is called in brcms_bcma_probe() context, therefore no locking required.
1126  */
1127 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1128 {
1129         struct brcms_info *wl = NULL;
1130         int unit, err;
1131         struct ieee80211_hw *hw;
1132         u8 perm[ETH_ALEN];
1133
1134         unit = n_adapters_found;
1135         err = 0;
1136
1137         if (unit < 0)
1138                 return NULL;
1139
1140         /* allocate private info */
1141         hw = bcma_get_drvdata(pdev);
1142         if (hw != NULL)
1143                 wl = hw->priv;
1144         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1145                 return NULL;
1146         wl->wiphy = hw->wiphy;
1147
1148         atomic_set(&wl->callbacks, 0);
1149
1150         init_waitqueue_head(&wl->tx_flush_wq);
1151
1152         /* setup the bottom half handler */
1153         tasklet_setup(&wl->tasklet, brcms_dpc);
1154
1155         spin_lock_init(&wl->lock);
1156         spin_lock_init(&wl->isr_lock);
1157
1158         /* common load-time initialization */
1159         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1160         if (!wl->wlc) {
1161                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1162                           KBUILD_MODNAME, err);
1163                 goto fail;
1164         }
1165         wl->pub = brcms_c_pub(wl->wlc);
1166
1167         wl->pub->ieee_hw = hw;
1168
1169         /* register our interrupt handler */
1170         if (request_irq(pdev->irq, brcms_isr,
1171                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1172                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1173                 goto fail;
1174         }
1175         wl->irq = pdev->irq;
1176
1177         /* register module */
1178         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1179
1180         if (ieee_hw_init(hw)) {
1181                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1182                           __func__);
1183                 goto fail;
1184         }
1185
1186         brcms_c_regd_init(wl->wlc);
1187
1188         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1189         if (WARN_ON(!is_valid_ether_addr(perm)))
1190                 goto fail;
1191         SET_IEEE80211_PERM_ADDR(hw, perm);
1192
1193         err = ieee80211_register_hw(hw);
1194         if (err)
1195                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1196                           "%d\n", __func__, err);
1197
1198         if (wl->pub->srom_ccode[0] &&
1199             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1200                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1201
1202         brcms_debugfs_attach(wl->pub);
1203         brcms_debugfs_create_files(wl->pub);
1204         n_adapters_found++;
1205         return wl;
1206
1207 fail:
1208         brcms_free(wl);
1209         return NULL;
1210 }
1211
1212
1213
1214 /*
1215  * determines if a device is a WL device, and if so, attaches it.
1216  *
1217  * This function determines if a device pointed to by pdev is a WL device,
1218  * and if so, performs a brcms_attach() on it.
1219  *
1220  * Perimeter lock is initialized in the course of this function.
1221  */
1222 static int brcms_bcma_probe(struct bcma_device *pdev)
1223 {
1224         struct brcms_info *wl;
1225         struct ieee80211_hw *hw;
1226         int ret;
1227
1228         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1229                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1230                  pdev->irq);
1231
1232         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1233             (pdev->id.id != BCMA_CORE_80211))
1234                 return -ENODEV;
1235
1236         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1237         if (!hw) {
1238                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1239                 return -ENOMEM;
1240         }
1241
1242         SET_IEEE80211_DEV(hw, &pdev->dev);
1243
1244         bcma_set_drvdata(pdev, hw);
1245
1246         memset(hw->priv, 0, sizeof(*wl));
1247
1248         wl = brcms_attach(pdev);
1249         if (!wl) {
1250                 pr_err("%s: brcms_attach failed!\n", __func__);
1251                 ret = -ENODEV;
1252                 goto err_free_ieee80211;
1253         }
1254         brcms_led_register(wl);
1255
1256         return 0;
1257
1258 err_free_ieee80211:
1259         ieee80211_free_hw(hw);
1260         return ret;
1261 }
1262
1263 static int brcms_suspend(struct bcma_device *pdev)
1264 {
1265         struct brcms_info *wl;
1266         struct ieee80211_hw *hw;
1267
1268         hw = bcma_get_drvdata(pdev);
1269         wl = hw->priv;
1270         if (!wl) {
1271                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1272                        __func__);
1273                 return -ENODEV;
1274         }
1275
1276         /* only need to flag hw is down for proper resume */
1277         spin_lock_bh(&wl->lock);
1278         wl->pub->hw_up = false;
1279         spin_unlock_bh(&wl->lock);
1280
1281         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1282
1283         return 0;
1284 }
1285
1286 static int brcms_resume(struct bcma_device *pdev)
1287 {
1288         return 0;
1289 }
1290
1291 static struct bcma_driver brcms_bcma_driver = {
1292         .name     = KBUILD_MODNAME,
1293         .probe    = brcms_bcma_probe,
1294         .suspend  = brcms_suspend,
1295         .resume   = brcms_resume,
1296         .remove   = brcms_remove,
1297         .id_table = brcms_coreid_table,
1298 };
1299
1300 /*
1301  * This is the main entry point for the brcmsmac driver.
1302  *
1303  * This function is scheduled upon module initialization and
1304  * does the driver registration, which result in brcms_bcma_probe()
1305  * call resulting in the driver bringup.
1306  */
1307 static void brcms_driver_init(struct work_struct *work)
1308 {
1309         int error;
1310
1311         error = bcma_driver_register(&brcms_bcma_driver);
1312         if (error)
1313                 pr_err("%s: register returned %d\n", __func__, error);
1314 }
1315
1316 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1317
1318 static int __init brcms_module_init(void)
1319 {
1320         brcms_debugfs_init();
1321         if (!schedule_work(&brcms_driver_work))
1322                 return -EBUSY;
1323
1324         return 0;
1325 }
1326
1327 /*
1328  * This function unloads the brcmsmac driver from the system.
1329  *
1330  * This function unconditionally unloads the brcmsmac driver module from the
1331  * system.
1332  *
1333  */
1334 static void __exit brcms_module_exit(void)
1335 {
1336         cancel_work_sync(&brcms_driver_work);
1337         bcma_driver_unregister(&brcms_bcma_driver);
1338         brcms_debugfs_exit();
1339 }
1340
1341 module_init(brcms_module_init);
1342 module_exit(brcms_module_exit);
1343
1344 /*
1345  * precondition: perimeter lock has been acquired
1346  */
1347 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1348                          bool state, int prio)
1349 {
1350         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1351 }
1352
1353 /*
1354  * precondition: perimeter lock has been acquired
1355  */
1356 void brcms_init(struct brcms_info *wl)
1357 {
1358         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1359                        wl->pub->unit);
1360         brcms_reset(wl);
1361         brcms_c_init(wl->wlc, wl->mute_tx);
1362 }
1363
1364 /*
1365  * precondition: perimeter lock has been acquired
1366  */
1367 uint brcms_reset(struct brcms_info *wl)
1368 {
1369         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1370         brcms_c_reset(wl->wlc);
1371
1372         /* dpc will not be rescheduled */
1373         wl->resched = false;
1374
1375         /* inform publicly that interface is down */
1376         wl->pub->up = false;
1377
1378         return 0;
1379 }
1380
1381 void brcms_fatal_error(struct brcms_info *wl)
1382 {
1383         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1384                   wl->wlc->pub->unit);
1385         brcms_reset(wl);
1386         ieee80211_restart_hw(wl->pub->ieee_hw);
1387 }
1388
1389 /*
1390  * These are interrupt on/off entry points. Disable interrupts
1391  * during interrupt state transition.
1392  */
1393 void brcms_intrson(struct brcms_info *wl)
1394 {
1395         unsigned long flags;
1396
1397         spin_lock_irqsave(&wl->isr_lock, flags);
1398         brcms_c_intrson(wl->wlc);
1399         spin_unlock_irqrestore(&wl->isr_lock, flags);
1400 }
1401
1402 u32 brcms_intrsoff(struct brcms_info *wl)
1403 {
1404         unsigned long flags;
1405         u32 status;
1406
1407         spin_lock_irqsave(&wl->isr_lock, flags);
1408         status = brcms_c_intrsoff(wl->wlc);
1409         spin_unlock_irqrestore(&wl->isr_lock, flags);
1410         return status;
1411 }
1412
1413 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1414 {
1415         unsigned long flags;
1416
1417         spin_lock_irqsave(&wl->isr_lock, flags);
1418         brcms_c_intrsrestore(wl->wlc, macintmask);
1419         spin_unlock_irqrestore(&wl->isr_lock, flags);
1420 }
1421
1422 /*
1423  * precondition: perimeter lock has been acquired
1424  */
1425 int brcms_up(struct brcms_info *wl)
1426 {
1427         int error = 0;
1428
1429         if (wl->pub->up)
1430                 return 0;
1431
1432         error = brcms_c_up(wl->wlc);
1433
1434         return error;
1435 }
1436
1437 /*
1438  * precondition: perimeter lock has been acquired
1439  */
1440 void brcms_down(struct brcms_info *wl)
1441         __must_hold(&wl->lock)
1442 {
1443         uint callbacks, ret_val = 0;
1444
1445         /* call common down function */
1446         ret_val = brcms_c_down(wl->wlc);
1447         callbacks = atomic_read(&wl->callbacks) - ret_val;
1448
1449         /* wait for down callbacks to complete */
1450         spin_unlock_bh(&wl->lock);
1451
1452         /* For HIGH_only driver, it's important to actually schedule other work,
1453          * not just spin wait since everything runs at schedule level
1454          */
1455         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1456
1457         spin_lock_bh(&wl->lock);
1458 }
1459
1460 /*
1461 * precondition: perimeter lock is not acquired
1462  */
1463 static void _brcms_timer(struct work_struct *work)
1464 {
1465         struct brcms_timer *t = container_of(work, struct brcms_timer,
1466                                              dly_wrk.work);
1467
1468         spin_lock_bh(&t->wl->lock);
1469
1470         if (t->set) {
1471                 if (t->periodic) {
1472                         atomic_inc(&t->wl->callbacks);
1473                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1474                                                      &t->dly_wrk,
1475                                                      msecs_to_jiffies(t->ms));
1476                 } else {
1477                         t->set = false;
1478                 }
1479
1480                 t->fn(t->arg);
1481         }
1482
1483         atomic_dec(&t->wl->callbacks);
1484
1485         spin_unlock_bh(&t->wl->lock);
1486 }
1487
1488 /*
1489  * Adds a timer to the list. Caller supplies a timer function.
1490  * Is called from wlc.
1491  *
1492  * precondition: perimeter lock has been acquired
1493  */
1494 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1495                                      void (*fn) (void *arg),
1496                                      void *arg, const char *name)
1497 {
1498         struct brcms_timer *t;
1499
1500         t = kzalloc(sizeof(*t), GFP_ATOMIC);
1501         if (!t)
1502                 return NULL;
1503
1504         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1505         t->wl = wl;
1506         t->fn = fn;
1507         t->arg = arg;
1508         t->next = wl->timers;
1509         wl->timers = t;
1510
1511 #ifdef DEBUG
1512         t->name = kstrdup(name, GFP_ATOMIC);
1513 #endif
1514
1515         return t;
1516 }
1517
1518 /*
1519  * adds only the kernel timer since it's going to be more accurate
1520  * as well as it's easier to make it periodic
1521  *
1522  * precondition: perimeter lock has been acquired
1523  */
1524 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1525 {
1526         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1527
1528 #ifdef DEBUG
1529         if (t->set)
1530                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1531                                "%s: Already set. Name: %s, per %d\n",
1532                                __func__, t->name, periodic);
1533 #endif
1534         t->ms = ms;
1535         t->periodic = (bool) periodic;
1536         if (!t->set) {
1537                 t->set = true;
1538                 atomic_inc(&t->wl->callbacks);
1539         }
1540
1541         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1542 }
1543
1544 /*
1545  * return true if timer successfully deleted, false if still pending
1546  *
1547  * precondition: perimeter lock has been acquired
1548  */
1549 bool brcms_del_timer(struct brcms_timer *t)
1550 {
1551         if (t->set) {
1552                 t->set = false;
1553                 if (!cancel_delayed_work(&t->dly_wrk))
1554                         return false;
1555
1556                 atomic_dec(&t->wl->callbacks);
1557         }
1558
1559         return true;
1560 }
1561
1562 /*
1563  * precondition: perimeter lock has been acquired
1564  */
1565 void brcms_free_timer(struct brcms_timer *t)
1566 {
1567         struct brcms_info *wl = t->wl;
1568         struct brcms_timer *tmp;
1569
1570         /* delete the timer in case it is active */
1571         brcms_del_timer(t);
1572
1573         if (wl->timers == t) {
1574                 wl->timers = wl->timers->next;
1575 #ifdef DEBUG
1576                 kfree(t->name);
1577 #endif
1578                 kfree(t);
1579                 return;
1580
1581         }
1582
1583         tmp = wl->timers;
1584         while (tmp) {
1585                 if (tmp->next == t) {
1586                         tmp->next = t->next;
1587 #ifdef DEBUG
1588                         kfree(t->name);
1589 #endif
1590                         kfree(t);
1591                         return;
1592                 }
1593                 tmp = tmp->next;
1594         }
1595
1596 }
1597
1598 /*
1599  * precondition: no locking required
1600  */
1601 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1602 {
1603         int i, entry;
1604         const u8 *pdata;
1605         struct firmware_hdr *hdr;
1606         for (i = 0; i < wl->fw.fw_cnt; i++) {
1607                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1608                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1609                      entry++, hdr++) {
1610                         u32 len = le32_to_cpu(hdr->len);
1611                         if (le32_to_cpu(hdr->idx) == idx) {
1612                                 pdata = wl->fw.fw_bin[i]->data +
1613                                         le32_to_cpu(hdr->offset);
1614                                 *pbuf = kvmemdup(pdata, len, GFP_KERNEL);
1615                                 if (*pbuf == NULL)
1616                                         return -ENOMEM;
1617                                 return 0;
1618                         }
1619                 }
1620         }
1621         brcms_err(wl->wlc->hw->d11core,
1622                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1623         *pbuf = NULL;
1624         return -ENODATA;
1625 }
1626
1627 /*
1628  * Precondition: Since this function is called in brcms_bcma_probe() context,
1629  * no locking is required.
1630  */
1631 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1632 {
1633         int i, entry;
1634         const u8 *pdata;
1635         struct firmware_hdr *hdr;
1636         for (i = 0; i < wl->fw.fw_cnt; i++) {
1637                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1638                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1639                      entry++, hdr++) {
1640                         if (le32_to_cpu(hdr->idx) == idx) {
1641                                 pdata = wl->fw.fw_bin[i]->data +
1642                                         le32_to_cpu(hdr->offset);
1643                                 if (le32_to_cpu(hdr->len) != 4) {
1644                                         brcms_err(wl->wlc->hw->d11core,
1645                                                   "ERROR: fw hdr len\n");
1646                                         return -ENOMSG;
1647                                 }
1648                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1649                                 return 0;
1650                         }
1651                 }
1652         }
1653         brcms_err(wl->wlc->hw->d11core,
1654                   "ERROR: ucode tag:%d can not be found!\n", idx);
1655         return -ENOMSG;
1656 }
1657
1658 /*
1659  * precondition: can both be called locked and unlocked
1660  */
1661 void brcms_ucode_free_buf(void *p)
1662 {
1663         kvfree(p);
1664 }
1665
1666 /*
1667  * checks validity of all firmware images loaded from user space
1668  *
1669  * Precondition: Since this function is called in brcms_bcma_probe() context,
1670  * no locking is required.
1671  */
1672 int brcms_check_firmwares(struct brcms_info *wl)
1673 {
1674         int i;
1675         int entry;
1676         int rc = 0;
1677         const struct firmware *fw;
1678         const struct firmware *fw_hdr;
1679         struct firmware_hdr *ucode_hdr;
1680         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1681                 fw =  wl->fw.fw_bin[i];
1682                 fw_hdr = wl->fw.fw_hdr[i];
1683                 if (fw == NULL && fw_hdr == NULL) {
1684                         break;
1685                 } else if (fw == NULL || fw_hdr == NULL) {
1686                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1687                                   __func__);
1688                         rc = -EBADF;
1689                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1690                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1691                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1692                                 sizeof(struct firmware_hdr));
1693                         rc = -EBADF;
1694                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1695                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1696                                   __func__, fw->size);
1697                         rc = -EBADF;
1698                 } else {
1699                         /* check if ucode section overruns firmware image */
1700                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1701                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1702                              !rc; entry++, ucode_hdr++) {
1703                                 if (le32_to_cpu(ucode_hdr->offset) +
1704                                     le32_to_cpu(ucode_hdr->len) >
1705                                     fw->size) {
1706                                         wiphy_err(wl->wiphy,
1707                                                   "%s: conflicting bin/hdr\n",
1708                                                   __func__);
1709                                         rc = -EBADF;
1710                                 }
1711                         }
1712                 }
1713         }
1714         if (rc == 0 && wl->fw.fw_cnt != i) {
1715                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1716                         wl->fw.fw_cnt);
1717                 rc = -EBADF;
1718         }
1719         return rc;
1720 }
1721
1722 /*
1723  * precondition: perimeter lock has been acquired
1724  */
1725 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1726         __must_hold(&wl->lock)
1727 {
1728         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1729
1730         spin_unlock_bh(&wl->lock);
1731         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1732         if (blocked)
1733                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1734         spin_lock_bh(&wl->lock);
1735         return blocked;
1736 }