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

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