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_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 = IEEE80211_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 = IEEE80211_BAND_5GHZ, \
  62         .center_freq = 5000 + 5*(channel), \
  63         .hw_value = (channel), \
  64         .flags = chflags, \
  65         .max_antenna_gain = 0, \
  66         .max_power = 21, \
  67 }
  68
  69 #define RATE(rate100m, _flags) { \
  70         .bitrate = (rate100m), \
  71         .flags = (_flags), \
  72         .hw_value = (rate100m / 5), \
  73 }
  74
  75 struct firmware_hdr {
  76         __le32 offset;
  77         __le32 len;
  78         __le32 idx;
  79 };
  80
  81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  82         "/*(DEBLOBBED)*/",
  83         NULL
  84 };
  85
  86 static int n_adapters_found;
  87
  88 MODULE_AUTHOR("Broadcom Corporation");
  89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  90 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  91 MODULE_LICENSE("Dual BSD/GPL");
  92 /* This needs to be adjusted when brcms_firmwares changes */
  93 /*(DEBLOBBED)*/
  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, S_IRUGO | S_IWUSR);
 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 = IEEE80211_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 = IEEE80211_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  */
 286 static void brcms_free(struct brcms_info *wl)
 287 {
 288         struct brcms_timer *t, *next;
 289
 290         /* free ucode data */
 291         if (wl->fw.fw_cnt)
 292                 brcms_ucode_data_free(&wl->ucode);
 293         if (wl->irq)
 294                 free_irq(wl->irq, wl);
 295
 296         /* kill dpc */
 297         tasklet_kill(&wl->tasklet);
 298
 299         if (wl->pub) {
 300                 brcms_debugfs_detach(wl->pub);
 301                 brcms_c_module_unregister(wl->pub, "linux", wl);
 302         }
 303
 304         /* free common resources */
 305         if (wl->wlc) {
 306                 brcms_c_detach(wl->wlc);
 307                 wl->wlc = NULL;
 308                 wl->pub = NULL;
 309         }
 310
 311         /* virtual interface deletion is deferred so we cannot spinwait */
 312
 313         /* wait for all pending callbacks to complete */
 314         while (atomic_read(&wl->callbacks) > 0)
 315                 schedule();
 316
 317         /* free timers */
 318         for (t = wl->timers; t; t = next) {
 319                 next = t->next;
 320 #ifdef DEBUG
 321                 kfree(t->name);
 322 #endif
 323                 kfree(t);
 324         }
 325 }
 326
 327 /*
 328 * called from both kernel as from this kernel module (error flow on attach)
 329 * precondition: perimeter lock is not acquired.
 330 */
 331 static void brcms_remove(struct bcma_device *pdev)
 332 {
 333         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 334         struct brcms_info *wl = hw->priv;
 335
 336         if (wl->wlc) {
 337                 brcms_led_unregister(wl);
 338                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 339                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 340                 ieee80211_unregister_hw(hw);
 341         }
 342
 343         brcms_free(wl);
 344
 345         bcma_set_drvdata(pdev, NULL);
 346         ieee80211_free_hw(hw);
 347 }
 348
 349 /*
 350  * Precondition: Since this function is called in brcms_pci_probe() context,
 351  * no locking is required.
 352  */
 353 static void brcms_release_fw(struct brcms_info *wl)
 354 {
 355         int i;
 356         for (i = 0; i < MAX_FW_IMAGES; i++) {
 357                 release_firmware(wl->fw.fw_bin[i]);
 358                 release_firmware(wl->fw.fw_hdr[i]);
 359         }
 360 }
 361
 362 /*
 363  * Precondition: Since this function is called in brcms_pci_probe() context,
 364  * no locking is required.
 365  */
 366 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 367 {
 368         int status;
 369         struct device *device = &pdev->dev;
 370         char fw_name[100];
 371         int i;
 372
 373         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 374         for (i = 0; i < MAX_FW_IMAGES; i++) {
 375                 if (brcms_firmwares[i] == NULL)
 376                         break;
 377                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 378                         UCODE_LOADER_API_VER);
 379                 status = reject_firmware(&wl->fw.fw_bin[i], fw_name, device);
 380                 if (status) {
 381                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 382                                   KBUILD_MODNAME, fw_name);
 383                         return status;
 384                 }
 385                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 386                         UCODE_LOADER_API_VER);
 387                 status = reject_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 388                 if (status) {
 389                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 390                                   KBUILD_MODNAME, fw_name);
 391                         return status;
 392                 }
 393                 wl->fw.hdr_num_entries[i] =
 394                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 395         }
 396         wl->fw.fw_cnt = i;
 397         status = brcms_ucode_data_init(wl, &wl->ucode);
 398         brcms_release_fw(wl);
 399         return status;
 400 }
 401
 402 static void brcms_ops_tx(struct ieee80211_hw *hw,
 403                          struct ieee80211_tx_control *control,
 404                          struct sk_buff *skb)
 405 {
 406         struct brcms_info *wl = hw->priv;
 407         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 408
 409         spin_lock_bh(&wl->lock);
 410         if (!wl->pub->up) {
 411                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 412                 kfree_skb(skb);
 413                 goto done;
 414         }
 415         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 416                 tx_info->rate_driver_data[0] = control->sta;
 417  done:
 418         spin_unlock_bh(&wl->lock);
 419 }
 420
 421 static int brcms_ops_start(struct ieee80211_hw *hw)
 422 {
 423         struct brcms_info *wl = hw->priv;
 424         bool blocked;
 425         int err;
 426
 427         if (!wl->ucode.bcm43xx_bomminor) {
 428                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 429                 if (err)
 430                         return -ENOENT;
 431         }
 432
 433         ieee80211_wake_queues(hw);
 434         spin_lock_bh(&wl->lock);
 435         blocked = brcms_rfkill_set_hw_state(wl);
 436         spin_unlock_bh(&wl->lock);
 437         if (!blocked)
 438                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 439
 440         spin_lock_bh(&wl->lock);
 441         /* avoid acknowledging frames before a non-monitor device is added */
 442         wl->mute_tx = true;
 443
 444         if (!wl->pub->up)
 445                 if (!blocked)
 446                         err = brcms_up(wl);
 447                 else
 448                         err = -ERFKILL;
 449         else
 450                 err = -ENODEV;
 451         spin_unlock_bh(&wl->lock);
 452
 453         if (err != 0)
 454                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 455                           __func__, err);
 456
 457         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 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         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 481
 482         /* put driver in down state */
 483         spin_lock_bh(&wl->lock);
 484         brcms_down(wl);
 485         spin_unlock_bh(&wl->lock);
 486 }
 487
 488 static int
 489 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 490 {
 491         struct brcms_info *wl = hw->priv;
 492
 493         /* Just STA, AP and ADHOC for now */
 494         if (vif->type != NL80211_IFTYPE_STATION &&
 495             vif->type != NL80211_IFTYPE_AP &&
 496             vif->type != NL80211_IFTYPE_ADHOC) {
 497                 brcms_err(wl->wlc->hw->d11core,
 498                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 499                           __func__, vif->type);
 500                 return -EOPNOTSUPP;
 501         }
 502
 503         spin_lock_bh(&wl->lock);
 504         wl->wlc->vif = vif;
 505         wl->mute_tx = false;
 506         brcms_c_mute(wl->wlc, false);
 507         if (vif->type == NL80211_IFTYPE_STATION)
 508                 brcms_c_start_station(wl->wlc, vif->addr);
 509         else if (vif->type == NL80211_IFTYPE_AP)
 510                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 511                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 512         else if (vif->type == NL80211_IFTYPE_ADHOC)
 513                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 514         spin_unlock_bh(&wl->lock);
 515
 516         return 0;
 517 }
 518
 519 static void
 520 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 521 {
 522         struct brcms_info *wl = hw->priv;
 523
 524         spin_lock_bh(&wl->lock);
 525         wl->wlc->vif = NULL;
 526         spin_unlock_bh(&wl->lock);
 527 }
 528
 529 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 530 {
 531         struct ieee80211_conf *conf = &hw->conf;
 532         struct brcms_info *wl = hw->priv;
 533         struct bcma_device *core = wl->wlc->hw->d11core;
 534         int err = 0;
 535         int new_int;
 536
 537         spin_lock_bh(&wl->lock);
 538         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 539                 brcms_c_set_beacon_listen_interval(wl->wlc,
 540                                                    conf->listen_interval);
 541         }
 542         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 543                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 544                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 545                                "true" : "false");
 546         if (changed & IEEE80211_CONF_CHANGE_PS)
 547                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 548                           __func__, conf->flags & IEEE80211_CONF_PS ?
 549                           "true" : "false");
 550
 551         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 552                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 553                 if (err < 0) {
 554                         brcms_err(core, "%s: Error setting power_level\n",
 555                                   __func__);
 556                         goto config_out;
 557                 }
 558                 new_int = brcms_c_get_tx_power(wl->wlc);
 559                 if (new_int != conf->power_level)
 560                         brcms_err(core,
 561                                   "%s: Power level req != actual, %d %d\n",
 562                                   __func__, conf->power_level,
 563                                   new_int);
 564         }
 565         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 566                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 567                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 568                         err = brcms_c_set_channel(wl->wlc,
 569                                                   conf->chandef.chan->hw_value);
 570                 else
 571                         err = -ENOTSUPP;
 572         }
 573         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 574                 err = brcms_c_set_rate_limit(wl->wlc,
 575                                              conf->short_frame_max_tx_count,
 576                                              conf->long_frame_max_tx_count);
 577
 578  config_out:
 579         spin_unlock_bh(&wl->lock);
 580         return err;
 581 }
 582
 583 static void
 584 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 585                         struct ieee80211_vif *vif,
 586                         struct ieee80211_bss_conf *info, u32 changed)
 587 {
 588         struct brcms_info *wl = hw->priv;
 589         struct bcma_device *core = wl->wlc->hw->d11core;
 590
 591         if (changed & BSS_CHANGED_ASSOC) {
 592                 /* association status changed (associated/disassociated)
 593                  * also implies a change in the AID.
 594                  */
 595                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 596                           __func__, info->assoc ? "" : "dis");
 597                 spin_lock_bh(&wl->lock);
 598                 brcms_c_associate_upd(wl->wlc, info->assoc);
 599                 spin_unlock_bh(&wl->lock);
 600         }
 601         if (changed & BSS_CHANGED_ERP_SLOT) {
 602                 s8 val;
 603
 604                 /* slot timing changed */
 605                 if (info->use_short_slot)
 606                         val = 1;
 607                 else
 608                         val = 0;
 609                 spin_lock_bh(&wl->lock);
 610                 brcms_c_set_shortslot_override(wl->wlc, val);
 611                 spin_unlock_bh(&wl->lock);
 612         }
 613
 614         if (changed & BSS_CHANGED_HT) {
 615                 /* 802.11n parameters changed */
 616                 u16 mode = info->ht_operation_mode;
 617
 618                 spin_lock_bh(&wl->lock);
 619                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 620                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 621                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 622                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 623                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 624                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 625                 spin_unlock_bh(&wl->lock);
 626         }
 627         if (changed & BSS_CHANGED_BASIC_RATES) {
 628                 struct ieee80211_supported_band *bi;
 629                 u32 br_mask, i;
 630                 u16 rate;
 631                 struct brcm_rateset rs;
 632                 int error;
 633
 634                 /* retrieve the current rates */
 635                 spin_lock_bh(&wl->lock);
 636                 brcms_c_get_current_rateset(wl->wlc, &rs);
 637                 spin_unlock_bh(&wl->lock);
 638
 639                 br_mask = info->basic_rates;
 640                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 641                 for (i = 0; i < bi->n_bitrates; i++) {
 642                         /* convert to internal rate value */
 643                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 644
 645                         /* set/clear basic rate flag */
 646                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 647                         br_mask >>= 1;
 648                 }
 649
 650                 /* update the rate set */
 651                 spin_lock_bh(&wl->lock);
 652                 error = brcms_c_set_rateset(wl->wlc, &rs);
 653                 spin_unlock_bh(&wl->lock);
 654                 if (error)
 655                         brcms_err(core, "changing basic rates failed: %d\n",
 656                                   error);
 657         }
 658         if (changed & BSS_CHANGED_BEACON_INT) {
 659                 /* Beacon interval changed */
 660                 spin_lock_bh(&wl->lock);
 661                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 662                 spin_unlock_bh(&wl->lock);
 663         }
 664         if (changed & BSS_CHANGED_BSSID) {
 665                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 666                 spin_lock_bh(&wl->lock);
 667                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 668                 spin_unlock_bh(&wl->lock);
 669         }
 670         if (changed & BSS_CHANGED_SSID) {
 671                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 672                 spin_lock_bh(&wl->lock);
 673                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 674                 spin_unlock_bh(&wl->lock);
 675         }
 676         if (changed & BSS_CHANGED_BEACON) {
 677                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 678                 struct sk_buff *beacon;
 679                 u16 tim_offset = 0;
 680
 681                 spin_lock_bh(&wl->lock);
 682                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 683                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 684                                        info->dtim_period);
 685                 spin_unlock_bh(&wl->lock);
 686         }
 687
 688         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 689                 struct sk_buff *probe_resp;
 690
 691                 spin_lock_bh(&wl->lock);
 692                 probe_resp = ieee80211_proberesp_get(hw, vif);
 693                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 694                 spin_unlock_bh(&wl->lock);
 695         }
 696
 697         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 698                 /* Beaconing should be enabled/disabled (beaconing modes) */
 699                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 700                           info->enable_beacon ? "true" : "false");
 701                 if (info->enable_beacon &&
 702                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 703                         brcms_c_enable_probe_resp(wl->wlc, true);
 704                 } else {
 705                         brcms_c_enable_probe_resp(wl->wlc, false);
 706                 }
 707         }
 708
 709         if (changed & BSS_CHANGED_CQM) {
 710                 /* Connection quality monitor config changed */
 711                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 712                           " (implement)\n", __func__, info->cqm_rssi_thold,
 713                           info->cqm_rssi_hyst);
 714         }
 715
 716         if (changed & BSS_CHANGED_IBSS) {
 717                 /* IBSS join status changed */
 718                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 719                           __func__, info->ibss_joined ? "true" : "false");
 720         }
 721
 722         if (changed & BSS_CHANGED_ARP_FILTER) {
 723                 /* Hardware ARP filter address list or state changed */
 724                 brcms_err(core, "%s: arp filtering: %d addresses"
 725                           " (implement)\n", __func__, info->arp_addr_cnt);
 726         }
 727
 728         if (changed & BSS_CHANGED_QOS) {
 729                 /*
 730                  * QoS for this association was enabled/disabled.
 731                  * Note that it is only ever disabled for station mode.
 732                  */
 733                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 734                           __func__, info->qos ? "true" : "false");
 735         }
 736         return;
 737 }
 738
 739 static void
 740 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 741                         unsigned int changed_flags,
 742                         unsigned int *total_flags, u64 multicast)
 743 {
 744         struct brcms_info *wl = hw->priv;
 745         struct bcma_device *core = wl->wlc->hw->d11core;
 746
 747         changed_flags &= MAC_FILTERS;
 748         *total_flags &= MAC_FILTERS;
 749
 750         if (changed_flags & FIF_ALLMULTI)
 751                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 752         if (changed_flags & FIF_FCSFAIL)
 753                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 754         if (changed_flags & FIF_CONTROL)
 755                 brcms_dbg_info(core, "FIF_CONTROL\n");
 756         if (changed_flags & FIF_OTHER_BSS)
 757                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 758         if (changed_flags & FIF_PSPOLL)
 759                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 760         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 761                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 762
 763         spin_lock_bh(&wl->lock);
 764         brcms_c_mac_promisc(wl->wlc, *total_flags);
 765         spin_unlock_bh(&wl->lock);
 766         return;
 767 }
 768
 769 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 770                                     struct ieee80211_vif *vif,
 771                                     const u8 *mac_addr)
 772 {
 773         struct brcms_info *wl = hw->priv;
 774         spin_lock_bh(&wl->lock);
 775         brcms_c_scan_start(wl->wlc);
 776         spin_unlock_bh(&wl->lock);
 777         return;
 778 }
 779
 780 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 781                                        struct ieee80211_vif *vif)
 782 {
 783         struct brcms_info *wl = hw->priv;
 784         spin_lock_bh(&wl->lock);
 785         brcms_c_scan_stop(wl->wlc);
 786         spin_unlock_bh(&wl->lock);
 787         return;
 788 }
 789
 790 static int
 791 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 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->scb = scb;
 814         wl->pub->global_ampdu->max_pdu = 16;
 815
 816         /*
 817          * minstrel_ht initiates addBA on our behalf by calling
 818          * ieee80211_start_tx_ba_session()
 819          */
 820         return 0;
 821 }
 822
 823 static int
 824 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 825                     struct ieee80211_vif *vif,
 826                     struct ieee80211_ampdu_params *params)
 827 {
 828         struct brcms_info *wl = hw->priv;
 829         struct scb *scb = &wl->wlc->pri_scb;
 830         int status;
 831         struct ieee80211_sta *sta = params->sta;
 832         enum ieee80211_ampdu_mlme_action action = params->action;
 833         u16 tid = params->tid;
 834         u8 buf_size = params->buf_size;
 835
 836         if (WARN_ON(scb->magic != SCB_MAGIC))
 837                 return -EIDRM;
 838         switch (action) {
 839         case IEEE80211_AMPDU_RX_START:
 840                 break;
 841         case IEEE80211_AMPDU_RX_STOP:
 842                 break;
 843         case IEEE80211_AMPDU_TX_START:
 844                 spin_lock_bh(&wl->lock);
 845                 status = brcms_c_aggregatable(wl->wlc, tid);
 846                 spin_unlock_bh(&wl->lock);
 847                 if (!status) {
 848                         brcms_dbg_ht(wl->wlc->hw->d11core,
 849                                      "START: tid %d is not agg\'able\n", tid);
 850                         return -EINVAL;
 851                 }
 852                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 853                 break;
 854
 855         case IEEE80211_AMPDU_TX_STOP_CONT:
 856         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 857         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 858                 spin_lock_bh(&wl->lock);
 859                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 860                 spin_unlock_bh(&wl->lock);
 861                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 862                 break;
 863         case IEEE80211_AMPDU_TX_OPERATIONAL:
 864                 /*
 865                  * BA window size from ADDBA response ('buf_size') defines how
 866                  * many outstanding MPDUs are allowed for the BA stream by
 867                  * recipient and traffic class. 'ampdu_factor' gives maximum
 868                  * AMPDU size.
 869                  */
 870                 spin_lock_bh(&wl->lock);
 871                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 872                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 873                          sta->ht_cap.ampdu_factor)) - 1);
 874                 spin_unlock_bh(&wl->lock);
 875                 /* Power save wakeup */
 876                 break;
 877         default:
 878                 brcms_err(wl->wlc->hw->d11core,
 879                           "%s: Invalid command, ignoring\n", __func__);
 880         }
 881
 882         return 0;
 883 }
 884
 885 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 886 {
 887         struct brcms_info *wl = hw->priv;
 888         bool blocked;
 889
 890         spin_lock_bh(&wl->lock);
 891         blocked = brcms_c_check_radio_disabled(wl->wlc);
 892         spin_unlock_bh(&wl->lock);
 893
 894         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 895 }
 896
 897 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 898 {
 899         bool result;
 900
 901         spin_lock_bh(&wl->lock);
 902         result = brcms_c_tx_flush_completed(wl->wlc);
 903         spin_unlock_bh(&wl->lock);
 904         return result;
 905 }
 906
 907 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 908                             u32 queues, bool drop)
 909 {
 910         struct brcms_info *wl = hw->priv;
 911         int ret;
 912
 913         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 914
 915         ret = wait_event_timeout(wl->tx_flush_wq,
 916                                  brcms_tx_flush_completed(wl),
 917                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 918
 919         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 920                            "ret=%d\n", jiffies_to_msecs(ret));
 921 }
 922
 923 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 924 {
 925         struct brcms_info *wl = hw->priv;
 926         u64 tsf;
 927
 928         spin_lock_bh(&wl->lock);
 929         tsf = brcms_c_tsf_get(wl->wlc);
 930         spin_unlock_bh(&wl->lock);
 931
 932         return tsf;
 933 }
 934
 935 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 936                            struct ieee80211_vif *vif, u64 tsf)
 937 {
 938         struct brcms_info *wl = hw->priv;
 939
 940         spin_lock_bh(&wl->lock);
 941         brcms_c_tsf_set(wl->wlc, tsf);
 942         spin_unlock_bh(&wl->lock);
 943 }
 944
 945 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 946                                  struct ieee80211_sta *sta, bool set)
 947 {
 948         struct brcms_info *wl = hw->priv;
 949         struct sk_buff *beacon = NULL;
 950         u16 tim_offset = 0;
 951
 952         spin_lock_bh(&wl->lock);
 953         if (wl->wlc->vif)
 954                 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 955                                                   &tim_offset, NULL);
 956         if (beacon)
 957                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 958                                        wl->wlc->vif->bss_conf.dtim_period);
 959         spin_unlock_bh(&wl->lock);
 960
 961         return 0;
 962 }
 963
 964 static const struct ieee80211_ops brcms_ops = {
 965         .tx = brcms_ops_tx,
 966         .start = brcms_ops_start,
 967         .stop = brcms_ops_stop,
 968         .add_interface = brcms_ops_add_interface,
 969         .remove_interface = brcms_ops_remove_interface,
 970         .config = brcms_ops_config,
 971         .bss_info_changed = brcms_ops_bss_info_changed,
 972         .configure_filter = brcms_ops_configure_filter,
 973         .sw_scan_start = brcms_ops_sw_scan_start,
 974         .sw_scan_complete = brcms_ops_sw_scan_complete,
 975         .conf_tx = brcms_ops_conf_tx,
 976         .sta_add = brcms_ops_sta_add,
 977         .ampdu_action = brcms_ops_ampdu_action,
 978         .rfkill_poll = brcms_ops_rfkill_poll,
 979         .flush = brcms_ops_flush,
 980         .get_tsf = brcms_ops_get_tsf,
 981         .set_tsf = brcms_ops_set_tsf,
 982         .set_tim = brcms_ops_beacon_set_tim,
 983 };
 984
 985 void brcms_dpc(unsigned long data)
 986 {
 987         struct brcms_info *wl;
 988
 989         wl = (struct brcms_info *) data;
 990
 991         spin_lock_bh(&wl->lock);
 992
 993         /* call the common second level interrupt handler */
 994         if (wl->pub->up) {
 995                 if (wl->resched) {
 996                         unsigned long flags;
 997
 998                         spin_lock_irqsave(&wl->isr_lock, flags);
 999                         brcms_c_intrsupd(wl->wlc);
1000                         spin_unlock_irqrestore(&wl->isr_lock, flags);
1001                 }
1002
1003                 wl->resched = brcms_c_dpc(wl->wlc, true);
1004         }
1005
1006         /* brcms_c_dpc() may bring the driver down */
1007         if (!wl->pub->up)
1008                 goto done;
1009
1010         /* re-schedule dpc */
1011         if (wl->resched)
1012                 tasklet_schedule(&wl->tasklet);
1013         else
1014                 /* re-enable interrupts */
1015                 brcms_intrson(wl);
1016
1017  done:
1018         spin_unlock_bh(&wl->lock);
1019         wake_up(&wl->tx_flush_wq);
1020 }
1021
1022 static irqreturn_t brcms_isr(int irq, void *dev_id)
1023 {
1024         struct brcms_info *wl;
1025         irqreturn_t ret = IRQ_NONE;
1026
1027         wl = (struct brcms_info *) dev_id;
1028
1029         spin_lock(&wl->isr_lock);
1030
1031         /* call common first level interrupt handler */
1032         if (brcms_c_isr(wl->wlc)) {
1033                 /* schedule second level handler */
1034                 tasklet_schedule(&wl->tasklet);
1035                 ret = IRQ_HANDLED;
1036         }
1037
1038         spin_unlock(&wl->isr_lock);
1039
1040         return ret;
1041 }
1042
1043 /*
1044  * is called in brcms_pci_probe() context, therefore no locking required.
1045  */
1046 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1047 {
1048         struct brcms_info *wl = hw->priv;
1049         struct brcms_c_info *wlc = wl->wlc;
1050         struct ieee80211_supported_band *band;
1051         int has_5g = 0;
1052         u16 phy_type;
1053
1054         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1055         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1056
1057         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1058         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1059                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1060                 *band = brcms_band_2GHz_nphy_template;
1061                 if (phy_type == PHY_TYPE_LCN) {
1062                         /* Single stream */
1063                         band->ht_cap.mcs.rx_mask[1] = 0;
1064                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1065                 }
1066                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1067         } else {
1068                 return -EPERM;
1069         }
1070
1071         /* Assume all bands use the same phy.  True for 11n devices. */
1072         if (wl->pub->_nbands > 1) {
1073                 has_5g++;
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[IEEE80211_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
1094         hw->extra_tx_headroom = brcms_c_get_header_len();
1095         hw->queues = N_TX_QUEUES;
1096         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1097
1098         /* channel change time is dependent on chip and band  */
1099         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1100                                      BIT(NL80211_IFTYPE_AP) |
1101                                      BIT(NL80211_IFTYPE_ADHOC);
1102
1103         /*
1104          * deactivate sending probe responses by ucude, because this will
1105          * cause problems when WPS is used.
1106          *
1107          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1108          */
1109
1110         hw->rate_control_algorithm = "minstrel_ht";
1111
1112         hw->sta_data_size = 0;
1113         return ieee_hw_rate_init(hw);
1114 }
1115
1116 /**
1117  * attach to the WL device.
1118  *
1119  * Attach to the WL device identified by vendor and device parameters.
1120  * regs is a host accessible memory address pointing to WL device registers.
1121  *
1122  * is called in brcms_bcma_probe() context, therefore no locking required.
1123  */
1124 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1125 {
1126         struct brcms_info *wl = NULL;
1127         int unit, err;
1128         struct ieee80211_hw *hw;
1129         u8 perm[ETH_ALEN];
1130
1131         unit = n_adapters_found;
1132         err = 0;
1133
1134         if (unit < 0)
1135                 return NULL;
1136
1137         /* allocate private info */
1138         hw = bcma_get_drvdata(pdev);
1139         if (hw != NULL)
1140                 wl = hw->priv;
1141         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1142                 return NULL;
1143         wl->wiphy = hw->wiphy;
1144
1145         atomic_set(&wl->callbacks, 0);
1146
1147         init_waitqueue_head(&wl->tx_flush_wq);
1148
1149         /* setup the bottom half handler */
1150         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1151
1152         spin_lock_init(&wl->lock);
1153         spin_lock_init(&wl->isr_lock);
1154
1155         /* common load-time initialization */
1156         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1157         if (!wl->wlc) {
1158                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1159                           KBUILD_MODNAME, err);
1160                 goto fail;
1161         }
1162         wl->pub = brcms_c_pub(wl->wlc);
1163
1164         wl->pub->ieee_hw = hw;
1165
1166         /* register our interrupt handler */
1167         if (request_irq(pdev->irq, brcms_isr,
1168                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1169                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1170                 goto fail;
1171         }
1172         wl->irq = pdev->irq;
1173
1174         /* register module */
1175         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1176
1177         if (ieee_hw_init(hw)) {
1178                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1179                           __func__);
1180                 goto fail;
1181         }
1182
1183         brcms_c_regd_init(wl->wlc);
1184
1185         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1186         if (WARN_ON(!is_valid_ether_addr(perm)))
1187                 goto fail;
1188         SET_IEEE80211_PERM_ADDR(hw, perm);
1189
1190         err = ieee80211_register_hw(hw);
1191         if (err)
1192                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1193                           "%d\n", __func__, err);
1194
1195         if (wl->pub->srom_ccode[0] &&
1196             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1197                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1198
1199         brcms_debugfs_attach(wl->pub);
1200         brcms_debugfs_create_files(wl->pub);
1201         n_adapters_found++;
1202         return wl;
1203
1204 fail:
1205         brcms_free(wl);
1206         return NULL;
1207 }
1208
1209
1210
1211 /**
1212  * determines if a device is a WL device, and if so, attaches it.
1213  *
1214  * This function determines if a device pointed to by pdev is a WL device,
1215  * and if so, performs a brcms_attach() on it.
1216  *
1217  * Perimeter lock is initialized in the course of this function.
1218  */
1219 static int brcms_bcma_probe(struct bcma_device *pdev)
1220 {
1221         struct brcms_info *wl;
1222         struct ieee80211_hw *hw;
1223         int ret;
1224
1225         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1226                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1227                  pdev->irq);
1228
1229         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1230             (pdev->id.id != BCMA_CORE_80211))
1231                 return -ENODEV;
1232
1233         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1234         if (!hw) {
1235                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1236                 return -ENOMEM;
1237         }
1238
1239         SET_IEEE80211_DEV(hw, &pdev->dev);
1240
1241         bcma_set_drvdata(pdev, hw);
1242
1243         memset(hw->priv, 0, sizeof(*wl));
1244
1245         wl = brcms_attach(pdev);
1246         if (!wl) {
1247                 pr_err("%s: brcms_attach failed!\n", __func__);
1248                 ret = -ENODEV;
1249                 goto err_free_ieee80211;
1250         }
1251         brcms_led_register(wl);
1252
1253         return 0;
1254
1255 err_free_ieee80211:
1256         ieee80211_free_hw(hw);
1257         return ret;
1258 }
1259
1260 static int brcms_suspend(struct bcma_device *pdev)
1261 {
1262         struct brcms_info *wl;
1263         struct ieee80211_hw *hw;
1264
1265         hw = bcma_get_drvdata(pdev);
1266         wl = hw->priv;
1267         if (!wl) {
1268                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1269                        __func__);
1270                 return -ENODEV;
1271         }
1272
1273         /* only need to flag hw is down for proper resume */
1274         spin_lock_bh(&wl->lock);
1275         wl->pub->hw_up = false;
1276         spin_unlock_bh(&wl->lock);
1277
1278         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1279
1280         return 0;
1281 }
1282
1283 static int brcms_resume(struct bcma_device *pdev)
1284 {
1285         return 0;
1286 }
1287
1288 static struct bcma_driver brcms_bcma_driver = {
1289         .name     = KBUILD_MODNAME,
1290         .probe    = brcms_bcma_probe,
1291         .suspend  = brcms_suspend,
1292         .resume   = brcms_resume,
1293         .remove   = brcms_remove,
1294         .id_table = brcms_coreid_table,
1295 };
1296
1297 /**
1298  * This is the main entry point for the brcmsmac driver.
1299  *
1300  * This function is scheduled upon module initialization and
1301  * does the driver registration, which result in brcms_bcma_probe()
1302  * call resulting in the driver bringup.
1303  */
1304 static void brcms_driver_init(struct work_struct *work)
1305 {
1306         int error;
1307
1308         error = bcma_driver_register(&brcms_bcma_driver);
1309         if (error)
1310                 pr_err("%s: register returned %d\n", __func__, error);
1311 }
1312
1313 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1314
1315 static int __init brcms_module_init(void)
1316 {
1317         brcms_debugfs_init();
1318         if (!schedule_work(&brcms_driver_work))
1319                 return -EBUSY;
1320
1321         return 0;
1322 }
1323
1324 /**
1325  * This function unloads the brcmsmac driver from the system.
1326  *
1327  * This function unconditionally unloads the brcmsmac driver module from the
1328  * system.
1329  *
1330  */
1331 static void __exit brcms_module_exit(void)
1332 {
1333         cancel_work_sync(&brcms_driver_work);
1334         bcma_driver_unregister(&brcms_bcma_driver);
1335         brcms_debugfs_exit();
1336 }
1337
1338 module_init(brcms_module_init);
1339 module_exit(brcms_module_exit);
1340
1341 /*
1342  * precondition: perimeter lock has been acquired
1343  */
1344 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1345                          bool state, int prio)
1346 {
1347         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1348 }
1349
1350 /*
1351  * precondition: perimeter lock has been acquired
1352  */
1353 void brcms_init(struct brcms_info *wl)
1354 {
1355         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1356                        wl->pub->unit);
1357         brcms_reset(wl);
1358         brcms_c_init(wl->wlc, wl->mute_tx);
1359 }
1360
1361 /*
1362  * precondition: perimeter lock has been acquired
1363  */
1364 uint brcms_reset(struct brcms_info *wl)
1365 {
1366         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1367         brcms_c_reset(wl->wlc);
1368
1369         /* dpc will not be rescheduled */
1370         wl->resched = false;
1371
1372         /* inform publicly that interface is down */
1373         wl->pub->up = false;
1374
1375         return 0;
1376 }
1377
1378 void brcms_fatal_error(struct brcms_info *wl)
1379 {
1380         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1381                   wl->wlc->pub->unit);
1382         brcms_reset(wl);
1383         ieee80211_restart_hw(wl->pub->ieee_hw);
1384 }
1385
1386 /*
1387  * These are interrupt on/off entry points. Disable interrupts
1388  * during interrupt state transition.
1389  */
1390 void brcms_intrson(struct brcms_info *wl)
1391 {
1392         unsigned long flags;
1393
1394         spin_lock_irqsave(&wl->isr_lock, flags);
1395         brcms_c_intrson(wl->wlc);
1396         spin_unlock_irqrestore(&wl->isr_lock, flags);
1397 }
1398
1399 u32 brcms_intrsoff(struct brcms_info *wl)
1400 {
1401         unsigned long flags;
1402         u32 status;
1403
1404         spin_lock_irqsave(&wl->isr_lock, flags);
1405         status = brcms_c_intrsoff(wl->wlc);
1406         spin_unlock_irqrestore(&wl->isr_lock, flags);
1407         return status;
1408 }
1409
1410 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1411 {
1412         unsigned long flags;
1413
1414         spin_lock_irqsave(&wl->isr_lock, flags);
1415         brcms_c_intrsrestore(wl->wlc, macintmask);
1416         spin_unlock_irqrestore(&wl->isr_lock, flags);
1417 }
1418
1419 /*
1420  * precondition: perimeter lock has been acquired
1421  */
1422 int brcms_up(struct brcms_info *wl)
1423 {
1424         int error = 0;
1425
1426         if (wl->pub->up)
1427                 return 0;
1428
1429         error = brcms_c_up(wl->wlc);
1430
1431         return error;
1432 }
1433
1434 /*
1435  * precondition: perimeter lock has been acquired
1436  */
1437 void brcms_down(struct brcms_info *wl)
1438 {
1439         uint callbacks, ret_val = 0;
1440
1441         /* call common down function */
1442         ret_val = brcms_c_down(wl->wlc);
1443         callbacks = atomic_read(&wl->callbacks) - ret_val;
1444
1445         /* wait for down callbacks to complete */
1446         spin_unlock_bh(&wl->lock);
1447
1448         /* For HIGH_only driver, it's important to actually schedule other work,
1449          * not just spin wait since everything runs at schedule level
1450          */
1451         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1452
1453         spin_lock_bh(&wl->lock);
1454 }
1455
1456 /*
1457 * precondition: perimeter lock is not acquired
1458  */
1459 static void _brcms_timer(struct work_struct *work)
1460 {
1461         struct brcms_timer *t = container_of(work, struct brcms_timer,
1462                                              dly_wrk.work);
1463
1464         spin_lock_bh(&t->wl->lock);
1465
1466         if (t->set) {
1467                 if (t->periodic) {
1468                         atomic_inc(&t->wl->callbacks);
1469                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1470                                                      &t->dly_wrk,
1471                                                      msecs_to_jiffies(t->ms));
1472                 } else {
1473                         t->set = false;
1474                 }
1475
1476                 t->fn(t->arg);
1477         }
1478
1479         atomic_dec(&t->wl->callbacks);
1480
1481         spin_unlock_bh(&t->wl->lock);
1482 }
1483
1484 /*
1485  * Adds a timer to the list. Caller supplies a timer function.
1486  * Is called from wlc.
1487  *
1488  * precondition: perimeter lock has been acquired
1489  */
1490 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1491                                      void (*fn) (void *arg),
1492                                      void *arg, const char *name)
1493 {
1494         struct brcms_timer *t;
1495
1496         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1497         if (!t)
1498                 return NULL;
1499
1500         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1501         t->wl = wl;
1502         t->fn = fn;
1503         t->arg = arg;
1504         t->next = wl->timers;
1505         wl->timers = t;
1506
1507 #ifdef DEBUG
1508         t->name = kstrdup(name, GFP_ATOMIC);
1509 #endif
1510
1511         return t;
1512 }
1513
1514 /*
1515  * adds only the kernel timer since it's going to be more accurate
1516  * as well as it's easier to make it periodic
1517  *
1518  * precondition: perimeter lock has been acquired
1519  */
1520 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1521 {
1522         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1523
1524 #ifdef DEBUG
1525         if (t->set)
1526                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1527                                "%s: Already set. Name: %s, per %d\n",
1528                                __func__, t->name, periodic);
1529 #endif
1530         t->ms = ms;
1531         t->periodic = (bool) periodic;
1532         if (!t->set) {
1533                 t->set = true;
1534                 atomic_inc(&t->wl->callbacks);
1535         }
1536
1537         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1538 }
1539
1540 /*
1541  * return true if timer successfully deleted, false if still pending
1542  *
1543  * precondition: perimeter lock has been acquired
1544  */
1545 bool brcms_del_timer(struct brcms_timer *t)
1546 {
1547         if (t->set) {
1548                 t->set = false;
1549                 if (!cancel_delayed_work(&t->dly_wrk))
1550                         return false;
1551
1552                 atomic_dec(&t->wl->callbacks);
1553         }
1554
1555         return true;
1556 }
1557
1558 /*
1559  * precondition: perimeter lock has been acquired
1560  */
1561 void brcms_free_timer(struct brcms_timer *t)
1562 {
1563         struct brcms_info *wl = t->wl;
1564         struct brcms_timer *tmp;
1565
1566         /* delete the timer in case it is active */
1567         brcms_del_timer(t);
1568
1569         if (wl->timers == t) {
1570                 wl->timers = wl->timers->next;
1571 #ifdef DEBUG
1572                 kfree(t->name);
1573 #endif
1574                 kfree(t);
1575                 return;
1576
1577         }
1578
1579         tmp = wl->timers;
1580         while (tmp) {
1581                 if (tmp->next == t) {
1582                         tmp->next = t->next;
1583 #ifdef DEBUG
1584                         kfree(t->name);
1585 #endif
1586                         kfree(t);
1587                         return;
1588                 }
1589                 tmp = tmp->next;
1590         }
1591
1592 }
1593
1594 /*
1595  * precondition: perimeter lock has been acquired
1596  */
1597 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1598 {
1599         int i, entry;
1600         const u8 *pdata;
1601         struct firmware_hdr *hdr;
1602         for (i = 0; i < wl->fw.fw_cnt; i++) {
1603                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1604                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1605                      entry++, hdr++) {
1606                         u32 len = le32_to_cpu(hdr->len);
1607                         if (le32_to_cpu(hdr->idx) == idx) {
1608                                 pdata = wl->fw.fw_bin[i]->data +
1609                                         le32_to_cpu(hdr->offset);
1610                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1611                                 if (*pbuf == NULL)
1612                                         goto fail;
1613
1614                                 return 0;
1615                         }
1616                 }
1617         }
1618         brcms_err(wl->wlc->hw->d11core,
1619                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1620         *pbuf = NULL;
1621 fail:
1622         return -ENODATA;
1623 }
1624
1625 /*
1626  * Precondition: Since this function is called in brcms_bcma_probe() context,
1627  * no locking is required.
1628  */
1629 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1630 {
1631         int i, entry;
1632         const u8 *pdata;
1633         struct firmware_hdr *hdr;
1634         for (i = 0; i < wl->fw.fw_cnt; i++) {
1635                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1636                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1637                      entry++, hdr++) {
1638                         if (le32_to_cpu(hdr->idx) == idx) {
1639                                 pdata = wl->fw.fw_bin[i]->data +
1640                                         le32_to_cpu(hdr->offset);
1641                                 if (le32_to_cpu(hdr->len) != 4) {
1642                                         brcms_err(wl->wlc->hw->d11core,
1643                                                   "ERROR: fw hdr len\n");
1644                                         return -ENOMSG;
1645                                 }
1646                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1647                                 return 0;
1648                         }
1649                 }
1650         }
1651         brcms_err(wl->wlc->hw->d11core,
1652                   "ERROR: ucode tag:%d can not be found!\n", idx);
1653         return -ENOMSG;
1654 }
1655
1656 /*
1657  * precondition: can both be called locked and unlocked
1658  */
1659 void brcms_ucode_free_buf(void *p)
1660 {
1661         kfree(p);
1662 }
1663
1664 /*
1665  * checks validity of all firmware images loaded from user space
1666  *
1667  * Precondition: Since this function is called in brcms_bcma_probe() context,
1668  * no locking is required.
1669  */
1670 int brcms_check_firmwares(struct brcms_info *wl)
1671 {
1672         int i;
1673         int entry;
1674         int rc = 0;
1675         const struct firmware *fw;
1676         const struct firmware *fw_hdr;
1677         struct firmware_hdr *ucode_hdr;
1678         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1679                 fw =  wl->fw.fw_bin[i];
1680                 fw_hdr = wl->fw.fw_hdr[i];
1681                 if (fw == NULL && fw_hdr == NULL) {
1682                         break;
1683                 } else if (fw == NULL || fw_hdr == NULL) {
1684                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1685                                   __func__);
1686                         rc = -EBADF;
1687                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1688                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1689                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1690                                 sizeof(struct firmware_hdr));
1691                         rc = -EBADF;
1692                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1693                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1694                                   __func__, fw->size);
1695                         rc = -EBADF;
1696                 } else {
1697                         /* check if ucode section overruns firmware image */
1698                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1699                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1700                              !rc; entry++, ucode_hdr++) {
1701                                 if (le32_to_cpu(ucode_hdr->offset) +
1702                                     le32_to_cpu(ucode_hdr->len) >
1703                                     fw->size) {
1704                                         wiphy_err(wl->wiphy,
1705                                                   "%s: conflicting bin/hdr\n",
1706                                                   __func__);
1707                                         rc = -EBADF;
1708                                 }
1709                         }
1710                 }
1711         }
1712         if (rc == 0 && wl->fw.fw_cnt != i) {
1713                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1714                         wl->fw.fw_cnt);
1715                 rc = -EBADF;
1716         }
1717         return rc;
1718 }
1719
1720 /*
1721  * precondition: perimeter lock has been acquired
1722  */
1723 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1724 {
1725         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1726
1727         spin_unlock_bh(&wl->lock);
1728         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1729         if (blocked)
1730                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1731         spin_lock_bh(&wl->lock);
1732         return blocked;
1733 }