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

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <[email protected]>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define __UNDEF_NO_VERSION__
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/etherdevice.h>
  22 #include <linux/sched.h>
  23 #include <linux/firmware.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/bcma/bcma.h>
  27 #include <net/mac80211.h>
  28 #include <defs.h>
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37 #include "debug.h"
  38 #include "led.h"
  39
  40 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  41 #define BRCMS_FLUSH_TIMEOUT     500 /* msec */
  42
  43 /* Flags we support */
  44 #define MAC_FILTERS (FIF_ALLMULTI | \
  45         FIF_FCSFAIL | \
  46         FIF_CONTROL | \
  47         FIF_OTHER_BSS | \
  48         FIF_BCN_PRBRESP_PROMISC | \
  49         FIF_PSPOLL)
  50
  51 #define CHAN2GHZ(channel, freqency, chflags)  { \
  52         .band = NL80211_BAND_2GHZ, \
  53         .center_freq = (freqency), \
  54         .hw_value = (channel), \
  55         .flags = chflags, \
  56         .max_antenna_gain = 0, \
  57         .max_power = 19, \
  58 }
  59
  60 #define CHAN5GHZ(channel, chflags)  { \
  61         .band = NL80211_BAND_5GHZ, \
  62         .center_freq = 5000 + 5*(channel), \
  63         .hw_value = (channel), \
  64         .flags = chflags, \
  65         .max_antenna_gain = 0, \
  66         .max_power = 21, \
  67 }
  68
  69 #define RATE(rate100m, _flags) { \
  70         .bitrate = (rate100m), \
  71         .flags = (_flags), \
  72         .hw_value = (rate100m / 5), \
  73 }
  74
  75 struct firmware_hdr {
  76         __le32 offset;
  77         __le32 len;
  78         __le32 idx;
  79 };
  80
  81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  82         "brcm/bcm43xx",
  83         NULL
  84 };
  85
  86 static int n_adapters_found;
  87
  88 MODULE_AUTHOR("Broadcom Corporation");
  89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  90 MODULE_LICENSE("Dual BSD/GPL");
  91 /* This needs to be adjusted when brcms_firmwares changes */
  92 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  93 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  94
  95 /* recognized BCMA Core IDs */
  96 static struct bcma_device_id brcms_coreid_table[] = {
  97         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 100         {},
 101 };
 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 103
 104 #if defined(CONFIG_BRCMDBG)
 105 /*
 106  * Module parameter for setting the debug message level. Available
 107  * flags are specified by the BRCM_DL_* macros in
 108  * drivers/net/wireless/brcm80211/include/defs.h.
 109  */
 110 module_param_named(debug, brcm_msg_level, uint, 0644);
 111 #endif
 112
 113 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 114         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 115         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(5, 2432, 0),
 119         CHAN2GHZ(6, 2437, 0),
 120         CHAN2GHZ(7, 2442, 0),
 121         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(12, 2467,
 126                  IEEE80211_CHAN_NO_IR |
 127                  IEEE80211_CHAN_NO_HT40PLUS),
 128         CHAN2GHZ(13, 2472,
 129                  IEEE80211_CHAN_NO_IR |
 130                  IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN2GHZ(14, 2484,
 132                  IEEE80211_CHAN_NO_IR |
 133                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 134                  IEEE80211_CHAN_NO_OFDM)
 135 };
 136
 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 138         /* UNII-1 */
 139         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 140         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 143         /* UNII-2 */
 144         CHAN5GHZ(52,
 145                  IEEE80211_CHAN_RADAR |
 146                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 147         CHAN5GHZ(56,
 148                  IEEE80211_CHAN_RADAR |
 149                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 150         CHAN5GHZ(60,
 151                  IEEE80211_CHAN_RADAR |
 152                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 153         CHAN5GHZ(64,
 154                  IEEE80211_CHAN_RADAR |
 155                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 156         /* MID */
 157         CHAN5GHZ(100,
 158                  IEEE80211_CHAN_RADAR |
 159                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 160         CHAN5GHZ(104,
 161                  IEEE80211_CHAN_RADAR |
 162                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 163         CHAN5GHZ(108,
 164                  IEEE80211_CHAN_RADAR |
 165                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 166         CHAN5GHZ(112,
 167                  IEEE80211_CHAN_RADAR |
 168                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 169         CHAN5GHZ(116,
 170                  IEEE80211_CHAN_RADAR |
 171                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 172         CHAN5GHZ(120,
 173                  IEEE80211_CHAN_RADAR |
 174                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 175         CHAN5GHZ(124,
 176                  IEEE80211_CHAN_RADAR |
 177                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 178         CHAN5GHZ(128,
 179                  IEEE80211_CHAN_RADAR |
 180                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 181         CHAN5GHZ(132,
 182                  IEEE80211_CHAN_RADAR |
 183                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(136,
 185                  IEEE80211_CHAN_RADAR |
 186                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(140,
 188                  IEEE80211_CHAN_RADAR |
 189                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 190                  IEEE80211_CHAN_NO_HT40MINUS),
 191         /* UNII-3 */
 192         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 193         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 194         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 197 };
 198
 199 /*
 200  * The rate table is used for both 2.4G and 5G rates. The
 201  * latter being a subset as it does not support CCK rates.
 202  */
 203 static struct ieee80211_rate legacy_ratetable[] = {
 204         RATE(10, 0),
 205         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 206         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(60, 0),
 209         RATE(90, 0),
 210         RATE(120, 0),
 211         RATE(180, 0),
 212         RATE(240, 0),
 213         RATE(360, 0),
 214         RATE(480, 0),
 215         RATE(540, 0),
 216 };
 217
 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 219         .band = NL80211_BAND_2GHZ,
 220         .channels = brcms_2ghz_chantable,
 221         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 222         .bitrates = legacy_ratetable,
 223         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 224         .ht_cap = {
 225                    /* from include/linux/ieee80211.h */
 226                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 227                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 228                    .ht_supported = true,
 229                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 230                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 231                    .mcs = {
 232                            /* placeholders for now */
 233                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 234                            .rx_highest = cpu_to_le16(500),
 235                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 236                    }
 237 };
 238
 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 240         .band = NL80211_BAND_5GHZ,
 241         .channels = brcms_5ghz_nphy_chantable,
 242         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 243         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 244         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 245                         BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .ht_cap = {
 247                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 248                           IEEE80211_HT_CAP_SGI_40,
 249                    .ht_supported = true,
 250                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 251                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 252                    .mcs = {
 253                            /* placeholders for now */
 254                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 255                            .rx_highest = cpu_to_le16(500),
 256                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 257                    }
 258 };
 259
 260 /* flags the given rate in rateset as requested */
 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 262 {
 263         u32 i;
 264
 265         for (i = 0; i < rs->count; i++) {
 266                 if (rate != (rs->rates[i] & 0x7f))
 267                         continue;
 268
 269                 if (is_br)
 270                         rs->rates[i] |= BRCMS_RATE_FLAG;
 271                 else
 272                         rs->rates[i] &= BRCMS_RATE_MASK;
 273                 return;
 274         }
 275 }
 276
 277 /*
 278  * This function frees the WL per-device resources.
 279  *
 280  * This function frees resources owned by the WL device pointed to
 281  * by the wl parameter.
 282  *
 283  * precondition: can both be called locked and unlocked
 284  */
 285 static void brcms_free(struct brcms_info *wl)
 286 {
 287         struct brcms_timer *t, *next;
 288
 289         /* free ucode data */
 290         if (wl->fw.fw_cnt)
 291                 brcms_ucode_data_free(&wl->ucode);
 292         if (wl->irq)
 293                 free_irq(wl->irq, wl);
 294
 295         /* kill dpc */
 296         tasklet_kill(&wl->tasklet);
 297
 298         if (wl->pub) {
 299                 brcms_debugfs_detach(wl->pub);
 300                 brcms_c_module_unregister(wl->pub, "linux", wl);
 301         }
 302
 303         /* free common resources */
 304         if (wl->wlc) {
 305                 brcms_c_detach(wl->wlc);
 306                 wl->wlc = NULL;
 307                 wl->pub = NULL;
 308         }
 309
 310         /* virtual interface deletion is deferred so we cannot spinwait */
 311
 312         /* wait for all pending callbacks to complete */
 313         while (atomic_read(&wl->callbacks) > 0)
 314                 schedule();
 315
 316         /* free timers */
 317         for (t = wl->timers; t; t = next) {
 318                 next = t->next;
 319 #ifdef DEBUG
 320                 kfree(t->name);
 321 #endif
 322                 kfree(t);
 323         }
 324 }
 325
 326 /*
 327 * called from both kernel as from this kernel module (error flow on attach)
 328 * precondition: perimeter lock is not acquired.
 329 */
 330 static void brcms_remove(struct bcma_device *pdev)
 331 {
 332         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 333         struct brcms_info *wl = hw->priv;
 334
 335         if (wl->wlc) {
 336                 brcms_led_unregister(wl);
 337                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 338                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 339                 ieee80211_unregister_hw(hw);
 340         }
 341
 342         brcms_free(wl);
 343
 344         bcma_set_drvdata(pdev, NULL);
 345         ieee80211_free_hw(hw);
 346 }
 347
 348 /*
 349  * Precondition: Since this function is called in brcms_pci_probe() context,
 350  * no locking is required.
 351  */
 352 static void brcms_release_fw(struct brcms_info *wl)
 353 {
 354         int i;
 355         for (i = 0; i < MAX_FW_IMAGES; i++) {
 356                 release_firmware(wl->fw.fw_bin[i]);
 357                 release_firmware(wl->fw.fw_hdr[i]);
 358         }
 359 }
 360
 361 /*
 362  * Precondition: Since this function is called in brcms_pci_probe() context,
 363  * no locking is required.
 364  */
 365 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 366 {
 367         int status;
 368         struct device *device = &pdev->dev;
 369         char fw_name[100];
 370         int i;
 371
 372         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 373         for (i = 0; i < MAX_FW_IMAGES; i++) {
 374                 if (brcms_firmwares[i] == NULL)
 375                         break;
 376                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 377                         UCODE_LOADER_API_VER);
 378                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 379                 if (status) {
 380                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 381                                   KBUILD_MODNAME, fw_name);
 382                         return status;
 383                 }
 384                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 385                         UCODE_LOADER_API_VER);
 386                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 387                 if (status) {
 388                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 389                                   KBUILD_MODNAME, fw_name);
 390                         return status;
 391                 }
 392                 wl->fw.hdr_num_entries[i] =
 393                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 394         }
 395         wl->fw.fw_cnt = i;
 396         status = brcms_ucode_data_init(wl, &wl->ucode);
 397         brcms_release_fw(wl);
 398         return status;
 399 }
 400
 401 static void brcms_ops_tx(struct ieee80211_hw *hw,
 402                          struct ieee80211_tx_control *control,
 403                          struct sk_buff *skb)
 404 {
 405         struct brcms_info *wl = hw->priv;
 406         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 407
 408         spin_lock_bh(&wl->lock);
 409         if (!wl->pub->up) {
 410                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 411                 kfree_skb(skb);
 412                 goto done;
 413         }
 414         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 415                 tx_info->rate_driver_data[0] = control->sta;
 416  done:
 417         spin_unlock_bh(&wl->lock);
 418 }
 419
 420 static int brcms_ops_start(struct ieee80211_hw *hw)
 421 {
 422         struct brcms_info *wl = hw->priv;
 423         bool blocked;
 424         int err;
 425
 426         if (!wl->ucode.bcm43xx_bomminor) {
 427                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 428                 if (err)
 429                         return -ENOENT;
 430         }
 431
 432         ieee80211_wake_queues(hw);
 433         spin_lock_bh(&wl->lock);
 434         blocked = brcms_rfkill_set_hw_state(wl);
 435         spin_unlock_bh(&wl->lock);
 436         if (!blocked)
 437                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 438
 439         spin_lock_bh(&wl->lock);
 440         /* avoid acknowledging frames before a non-monitor device is added */
 441         wl->mute_tx = true;
 442
 443         if (!wl->pub->up)
 444                 if (!blocked)
 445                         err = brcms_up(wl);
 446                 else
 447                         err = -ERFKILL;
 448         else
 449                 err = -ENODEV;
 450         spin_unlock_bh(&wl->lock);
 451
 452         if (err != 0)
 453                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 454                           __func__, err);
 455
 456         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 457         return err;
 458 }
 459
 460 static void brcms_ops_stop(struct ieee80211_hw *hw)
 461 {
 462         struct brcms_info *wl = hw->priv;
 463         int status;
 464
 465         ieee80211_stop_queues(hw);
 466
 467         if (wl->wlc == NULL)
 468                 return;
 469
 470         spin_lock_bh(&wl->lock);
 471         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 472         spin_unlock_bh(&wl->lock);
 473         if (!status) {
 474                 brcms_err(wl->wlc->hw->d11core,
 475                           "wl: brcms_ops_stop: chipmatch failed\n");
 476                 return;
 477         }
 478
 479         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 480
 481         /* put driver in down state */
 482         spin_lock_bh(&wl->lock);
 483         brcms_down(wl);
 484         spin_unlock_bh(&wl->lock);
 485 }
 486
 487 static int
 488 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 489 {
 490         struct brcms_info *wl = hw->priv;
 491
 492         /* Just STA, AP and ADHOC for now */
 493         if (vif->type != NL80211_IFTYPE_STATION &&
 494             vif->type != NL80211_IFTYPE_AP &&
 495             vif->type != NL80211_IFTYPE_ADHOC) {
 496                 brcms_err(wl->wlc->hw->d11core,
 497                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 498                           __func__, vif->type);
 499                 return -EOPNOTSUPP;
 500         }
 501
 502         spin_lock_bh(&wl->lock);
 503         wl->wlc->vif = vif;
 504         wl->mute_tx = false;
 505         brcms_c_mute(wl->wlc, false);
 506         if (vif->type == NL80211_IFTYPE_STATION)
 507                 brcms_c_start_station(wl->wlc, vif->addr);
 508         else if (vif->type == NL80211_IFTYPE_AP)
 509                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 510                                  vif->cfg.ssid, vif->cfg.ssid_len);
 511         else if (vif->type == NL80211_IFTYPE_ADHOC)
 512                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 513         spin_unlock_bh(&wl->lock);
 514
 515         return 0;
 516 }
 517
 518 static void
 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 520 {
 521         struct brcms_info *wl = hw->priv;
 522
 523         spin_lock_bh(&wl->lock);
 524         wl->wlc->vif = NULL;
 525         spin_unlock_bh(&wl->lock);
 526 }
 527
 528 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 529 {
 530         struct ieee80211_conf *conf = &hw->conf;
 531         struct brcms_info *wl = hw->priv;
 532         struct bcma_device *core = wl->wlc->hw->d11core;
 533         int err = 0;
 534         int new_int;
 535
 536         spin_lock_bh(&wl->lock);
 537         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 538                 brcms_c_set_beacon_listen_interval(wl->wlc,
 539                                                    conf->listen_interval);
 540         }
 541         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 542                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 543                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 544                                "true" : "false");
 545         if (changed & IEEE80211_CONF_CHANGE_PS)
 546                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 547                           __func__, conf->flags & IEEE80211_CONF_PS ?
 548                           "true" : "false");
 549
 550         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 551                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 552                 if (err < 0) {
 553                         brcms_err(core, "%s: Error setting power_level\n",
 554                                   __func__);
 555                         goto config_out;
 556                 }
 557                 new_int = brcms_c_get_tx_power(wl->wlc);
 558                 if (new_int != conf->power_level)
 559                         brcms_err(core,
 560                                   "%s: Power level req != actual, %d %d\n",
 561                                   __func__, conf->power_level,
 562                                   new_int);
 563         }
 564         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 565                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 566                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 567                         err = brcms_c_set_channel(wl->wlc,
 568                                                   conf->chandef.chan->hw_value);
 569                 else
 570                         err = -ENOTSUPP;
 571         }
 572         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 573                 err = brcms_c_set_rate_limit(wl->wlc,
 574                                              conf->short_frame_max_tx_count,
 575                                              conf->long_frame_max_tx_count);
 576
 577  config_out:
 578         spin_unlock_bh(&wl->lock);
 579         return err;
 580 }
 581
 582 static void
 583 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 584                         struct ieee80211_vif *vif,
 585                         struct ieee80211_bss_conf *info, u64 changed)
 586 {
 587         struct brcms_info *wl = hw->priv;
 588         struct bcma_device *core = wl->wlc->hw->d11core;
 589
 590         if (changed & BSS_CHANGED_ASSOC) {
 591                 /* association status changed (associated/disassociated)
 592                  * also implies a change in the AID.
 593                  */
 594                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 595                           __func__, vif->cfg.assoc ? "" : "dis");
 596                 spin_lock_bh(&wl->lock);
 597                 brcms_c_associate_upd(wl->wlc, vif->cfg.assoc);
 598                 spin_unlock_bh(&wl->lock);
 599         }
 600         if (changed & BSS_CHANGED_ERP_SLOT) {
 601                 s8 val;
 602
 603                 /* slot timing changed */
 604                 if (info->use_short_slot)
 605                         val = 1;
 606                 else
 607                         val = 0;
 608                 spin_lock_bh(&wl->lock);
 609                 brcms_c_set_shortslot_override(wl->wlc, val);
 610                 spin_unlock_bh(&wl->lock);
 611         }
 612
 613         if (changed & BSS_CHANGED_HT) {
 614                 /* 802.11n parameters changed */
 615                 u16 mode = info->ht_operation_mode;
 616
 617                 spin_lock_bh(&wl->lock);
 618                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 619                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 620                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 621                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 622                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 623                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 624                 spin_unlock_bh(&wl->lock);
 625         }
 626         if (changed & BSS_CHANGED_BASIC_RATES) {
 627                 struct ieee80211_supported_band *bi;
 628                 u32 br_mask, i;
 629                 u16 rate;
 630                 struct brcm_rateset rs;
 631                 int error;
 632
 633                 /* retrieve the current rates */
 634                 spin_lock_bh(&wl->lock);
 635                 brcms_c_get_current_rateset(wl->wlc, &rs);
 636                 spin_unlock_bh(&wl->lock);
 637
 638                 br_mask = info->basic_rates;
 639                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 640                 for (i = 0; i < bi->n_bitrates; i++) {
 641                         /* convert to internal rate value */
 642                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 643
 644                         /* set/clear basic rate flag */
 645                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 646                         br_mask >>= 1;
 647                 }
 648
 649                 /* update the rate set */
 650                 spin_lock_bh(&wl->lock);
 651                 error = brcms_c_set_rateset(wl->wlc, &rs);
 652                 spin_unlock_bh(&wl->lock);
 653                 if (error)
 654                         brcms_err(core, "changing basic rates failed: %d\n",
 655                                   error);
 656         }
 657         if (changed & BSS_CHANGED_BEACON_INT) {
 658                 /* Beacon interval changed */
 659                 spin_lock_bh(&wl->lock);
 660                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 661                 spin_unlock_bh(&wl->lock);
 662         }
 663         if (changed & BSS_CHANGED_BSSID) {
 664                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 665                 spin_lock_bh(&wl->lock);
 666                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 667                 spin_unlock_bh(&wl->lock);
 668         }
 669         if (changed & BSS_CHANGED_SSID) {
 670                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 671                 spin_lock_bh(&wl->lock);
 672                 brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len);
 673                 spin_unlock_bh(&wl->lock);
 674         }
 675         if (changed & BSS_CHANGED_BEACON) {
 676                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 677                 struct sk_buff *beacon;
 678                 u16 tim_offset = 0;
 679
 680                 spin_lock_bh(&wl->lock);
 681                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0);
 682                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 683                                        info->dtim_period);
 684                 spin_unlock_bh(&wl->lock);
 685         }
 686
 687         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 688                 struct sk_buff *probe_resp;
 689
 690                 spin_lock_bh(&wl->lock);
 691                 probe_resp = ieee80211_proberesp_get(hw, vif);
 692                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 693                 spin_unlock_bh(&wl->lock);
 694         }
 695
 696         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 697                 /* Beaconing should be enabled/disabled (beaconing modes) */
 698                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 699                           info->enable_beacon ? "true" : "false");
 700                 if (info->enable_beacon &&
 701                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 702                         brcms_c_enable_probe_resp(wl->wlc, true);
 703                 } else {
 704                         brcms_c_enable_probe_resp(wl->wlc, false);
 705                 }
 706         }
 707
 708         if (changed & BSS_CHANGED_CQM) {
 709                 /* Connection quality monitor config changed */
 710                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 711                           " (implement)\n", __func__, info->cqm_rssi_thold,
 712                           info->cqm_rssi_hyst);
 713         }
 714
 715         if (changed & BSS_CHANGED_IBSS) {
 716                 /* IBSS join status changed */
 717                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 718                           __func__, vif->cfg.ibss_joined ? "true" : "false");
 719         }
 720
 721         if (changed & BSS_CHANGED_ARP_FILTER) {
 722                 /* Hardware ARP filter address list or state changed */
 723                 brcms_err(core, "%s: arp filtering: %d addresses"
 724                           " (implement)\n", __func__, vif->cfg.arp_addr_cnt);
 725         }
 726
 727         if (changed & BSS_CHANGED_QOS) {
 728                 /*
 729                  * QoS for this association was enabled/disabled.
 730                  * Note that it is only ever disabled for station mode.
 731                  */
 732                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 733                           __func__, info->qos ? "true" : "false");
 734         }
 735         return;
 736 }
 737
 738 static void
 739 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 740                         unsigned int changed_flags,
 741                         unsigned int *total_flags, u64 multicast)
 742 {
 743         struct brcms_info *wl = hw->priv;
 744         struct bcma_device *core = wl->wlc->hw->d11core;
 745
 746         changed_flags &= MAC_FILTERS;
 747         *total_flags &= MAC_FILTERS;
 748
 749         if (changed_flags & FIF_ALLMULTI)
 750                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 751         if (changed_flags & FIF_FCSFAIL)
 752                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 753         if (changed_flags & FIF_CONTROL)
 754                 brcms_dbg_info(core, "FIF_CONTROL\n");
 755         if (changed_flags & FIF_OTHER_BSS)
 756                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 757         if (changed_flags & FIF_PSPOLL)
 758                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 759         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 760                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 761
 762         spin_lock_bh(&wl->lock);
 763         brcms_c_mac_promisc(wl->wlc, *total_flags);
 764         spin_unlock_bh(&wl->lock);
 765         return;
 766 }
 767
 768 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 769                                     struct ieee80211_vif *vif,
 770                                     const u8 *mac_addr)
 771 {
 772         struct brcms_info *wl = hw->priv;
 773         spin_lock_bh(&wl->lock);
 774         brcms_c_scan_start(wl->wlc);
 775         spin_unlock_bh(&wl->lock);
 776         return;
 777 }
 778
 779 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 780                                        struct ieee80211_vif *vif)
 781 {
 782         struct brcms_info *wl = hw->priv;
 783         spin_lock_bh(&wl->lock);
 784         brcms_c_scan_stop(wl->wlc);
 785         spin_unlock_bh(&wl->lock);
 786         return;
 787 }
 788
 789 static int
 790 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 791                   unsigned int link_id, u16 queue,
 792                   const struct ieee80211_tx_queue_params *params)
 793 {
 794         struct brcms_info *wl = hw->priv;
 795
 796         spin_lock_bh(&wl->lock);
 797         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 798         spin_unlock_bh(&wl->lock);
 799
 800         return 0;
 801 }
 802
 803 static int
 804 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 805                struct ieee80211_sta *sta)
 806 {
 807         struct brcms_info *wl = hw->priv;
 808         struct scb *scb = &wl->wlc->pri_scb;
 809
 810         brcms_c_init_scb(scb);
 811
 812         wl->pub->global_ampdu = &(scb->scb_ampdu);
 813         wl->pub->global_ampdu->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                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
 853
 854         case IEEE80211_AMPDU_TX_STOP_CONT:
 855         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 856         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 857                 spin_lock_bh(&wl->lock);
 858                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 859                 spin_unlock_bh(&wl->lock);
 860                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 861                 break;
 862         case IEEE80211_AMPDU_TX_OPERATIONAL:
 863                 /*
 864                  * BA window size from ADDBA response ('buf_size') defines how
 865                  * many outstanding MPDUs are allowed for the BA stream by
 866                  * recipient and traffic class. 'ampdu_factor' gives maximum
 867                  * AMPDU size.
 868                  */
 869                 spin_lock_bh(&wl->lock);
 870                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 871                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 872                          sta->deflink.ht_cap.ampdu_factor)) - 1);
 873                 spin_unlock_bh(&wl->lock);
 874                 /* Power save wakeup */
 875                 break;
 876         default:
 877                 brcms_err(wl->wlc->hw->d11core,
 878                           "%s: Invalid command, ignoring\n", __func__);
 879         }
 880
 881         return 0;
 882 }
 883
 884 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 885 {
 886         struct brcms_info *wl = hw->priv;
 887         bool blocked;
 888
 889         spin_lock_bh(&wl->lock);
 890         blocked = brcms_c_check_radio_disabled(wl->wlc);
 891         spin_unlock_bh(&wl->lock);
 892
 893         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 894 }
 895
 896 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 897 {
 898         bool result;
 899
 900         spin_lock_bh(&wl->lock);
 901         result = brcms_c_tx_flush_completed(wl->wlc);
 902         spin_unlock_bh(&wl->lock);
 903         return result;
 904 }
 905
 906 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 907                             u32 queues, bool drop)
 908 {
 909         struct brcms_info *wl = hw->priv;
 910         int ret;
 911
 912         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 913
 914         ret = wait_event_timeout(wl->tx_flush_wq,
 915                                  brcms_tx_flush_completed(wl),
 916                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 917
 918         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 919                            "ret=%d\n", jiffies_to_msecs(ret));
 920 }
 921
 922 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 923 {
 924         struct brcms_info *wl = hw->priv;
 925         u64 tsf;
 926
 927         spin_lock_bh(&wl->lock);
 928         tsf = brcms_c_tsf_get(wl->wlc);
 929         spin_unlock_bh(&wl->lock);
 930
 931         return tsf;
 932 }
 933
 934 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 935                            struct ieee80211_vif *vif, u64 tsf)
 936 {
 937         struct brcms_info *wl = hw->priv;
 938
 939         spin_lock_bh(&wl->lock);
 940         brcms_c_tsf_set(wl->wlc, tsf);
 941         spin_unlock_bh(&wl->lock);
 942 }
 943
 944 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 945                                  struct ieee80211_sta *sta, bool set)
 946 {
 947         struct brcms_info *wl = hw->priv;
 948         struct sk_buff *beacon = NULL;
 949         u16 tim_offset = 0;
 950
 951         spin_lock_bh(&wl->lock);
 952         if (wl->wlc->vif)
 953                 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 954                                                   &tim_offset, NULL, 0);
 955         if (beacon)
 956                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 957                                        wl->wlc->vif->bss_conf.dtim_period);
 958         spin_unlock_bh(&wl->lock);
 959
 960         return 0;
 961 }
 962
 963 static const struct ieee80211_ops brcms_ops = {
 964         .tx = brcms_ops_tx,
 965         .wake_tx_queue = ieee80211_handle_wake_tx_queue,
 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(struct tasklet_struct *t)
 986 {
 987         struct brcms_info *wl;
 988
 989         wl = from_tasklet(wl, t, tasklet);
 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         u16 phy_type;
1052
1053         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1054         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1055
1056         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1057         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1058                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1059                 *band = brcms_band_2GHz_nphy_template;
1060                 if (phy_type == PHY_TYPE_LCN) {
1061                         /* Single stream */
1062                         band->ht_cap.mcs.rx_mask[1] = 0;
1063                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1064                 }
1065                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1066         } else {
1067                 return -EPERM;
1068         }
1069
1070         /* Assume all bands use the same phy.  True for 11n devices. */
1071         if (wl->pub->_nbands > 1) {
1072                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1073                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1074                         *band = brcms_band_5GHz_nphy_template;
1075                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1076                 } else {
1077                         return -EPERM;
1078                 }
1079         }
1080         return 0;
1081 }
1082
1083 /*
1084  * is called in brcms_pci_probe() context, therefore no locking required.
1085  */
1086 static int ieee_hw_init(struct ieee80211_hw *hw)
1087 {
1088         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1089         ieee80211_hw_set(hw, SIGNAL_DBM);
1090         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1091
1092         hw->extra_tx_headroom = brcms_c_get_header_len();
1093         hw->queues = N_TX_QUEUES;
1094         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1095
1096         /* channel change time is dependent on chip and band  */
1097         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1098                                      BIT(NL80211_IFTYPE_AP) |
1099                                      BIT(NL80211_IFTYPE_ADHOC);
1100
1101         /*
1102          * deactivate sending probe responses by ucude, because this will
1103          * cause problems when WPS is used.
1104          *
1105          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1106          */
1107
1108         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
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_setup(&wl->tasklet, brcms_dpc);
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         __must_hold(&wl->lock)
1439 {
1440         uint callbacks, ret_val = 0;
1441
1442         /* call common down function */
1443         ret_val = brcms_c_down(wl->wlc);
1444         callbacks = atomic_read(&wl->callbacks) - ret_val;
1445
1446         /* wait for down callbacks to complete */
1447         spin_unlock_bh(&wl->lock);
1448
1449         /* For HIGH_only driver, it's important to actually schedule other work,
1450          * not just spin wait since everything runs at schedule level
1451          */
1452         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1453
1454         spin_lock_bh(&wl->lock);
1455 }
1456
1457 /*
1458 * precondition: perimeter lock is not acquired
1459  */
1460 static void _brcms_timer(struct work_struct *work)
1461 {
1462         struct brcms_timer *t = container_of(work, struct brcms_timer,
1463                                              dly_wrk.work);
1464
1465         spin_lock_bh(&t->wl->lock);
1466
1467         if (t->set) {
1468                 if (t->periodic) {
1469                         atomic_inc(&t->wl->callbacks);
1470                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1471                                                      &t->dly_wrk,
1472                                                      msecs_to_jiffies(t->ms));
1473                 } else {
1474                         t->set = false;
1475                 }
1476
1477                 t->fn(t->arg);
1478         }
1479
1480         atomic_dec(&t->wl->callbacks);
1481
1482         spin_unlock_bh(&t->wl->lock);
1483 }
1484
1485 /*
1486  * Adds a timer to the list. Caller supplies a timer function.
1487  * Is called from wlc.
1488  *
1489  * precondition: perimeter lock has been acquired
1490  */
1491 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1492                                      void (*fn) (void *arg),
1493                                      void *arg, const char *name)
1494 {
1495         struct brcms_timer *t;
1496
1497         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1498         if (!t)
1499                 return NULL;
1500
1501         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1502         t->wl = wl;
1503         t->fn = fn;
1504         t->arg = arg;
1505         t->next = wl->timers;
1506         wl->timers = t;
1507
1508 #ifdef DEBUG
1509         t->name = kstrdup(name, GFP_ATOMIC);
1510 #endif
1511
1512         return t;
1513 }
1514
1515 /*
1516  * adds only the kernel timer since it's going to be more accurate
1517  * as well as it's easier to make it periodic
1518  *
1519  * precondition: perimeter lock has been acquired
1520  */
1521 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1522 {
1523         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1524
1525 #ifdef DEBUG
1526         if (t->set)
1527                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1528                                "%s: Already set. Name: %s, per %d\n",
1529                                __func__, t->name, periodic);
1530 #endif
1531         t->ms = ms;
1532         t->periodic = (bool) periodic;
1533         if (!t->set) {
1534                 t->set = true;
1535                 atomic_inc(&t->wl->callbacks);
1536         }
1537
1538         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1539 }
1540
1541 /*
1542  * return true if timer successfully deleted, false if still pending
1543  *
1544  * precondition: perimeter lock has been acquired
1545  */
1546 bool brcms_del_timer(struct brcms_timer *t)
1547 {
1548         if (t->set) {
1549                 t->set = false;
1550                 if (!cancel_delayed_work(&t->dly_wrk))
1551                         return false;
1552
1553                 atomic_dec(&t->wl->callbacks);
1554         }
1555
1556         return true;
1557 }
1558
1559 /*
1560  * precondition: perimeter lock has been acquired
1561  */
1562 void brcms_free_timer(struct brcms_timer *t)
1563 {
1564         struct brcms_info *wl = t->wl;
1565         struct brcms_timer *tmp;
1566
1567         /* delete the timer in case it is active */
1568         brcms_del_timer(t);
1569
1570         if (wl->timers == t) {
1571                 wl->timers = wl->timers->next;
1572 #ifdef DEBUG
1573                 kfree(t->name);
1574 #endif
1575                 kfree(t);
1576                 return;
1577
1578         }
1579
1580         tmp = wl->timers;
1581         while (tmp) {
1582                 if (tmp->next == t) {
1583                         tmp->next = t->next;
1584 #ifdef DEBUG
1585                         kfree(t->name);
1586 #endif
1587                         kfree(t);
1588                         return;
1589                 }
1590                 tmp = tmp->next;
1591         }
1592
1593 }
1594
1595 /*
1596  * precondition: no locking required
1597  */
1598 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1599 {
1600         int i, entry;
1601         const u8 *pdata;
1602         struct firmware_hdr *hdr;
1603         for (i = 0; i < wl->fw.fw_cnt; i++) {
1604                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1605                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1606                      entry++, hdr++) {
1607                         u32 len = le32_to_cpu(hdr->len);
1608                         if (le32_to_cpu(hdr->idx) == idx) {
1609                                 pdata = wl->fw.fw_bin[i]->data +
1610                                         le32_to_cpu(hdr->offset);
1611                                 *pbuf = kvmalloc(len, GFP_KERNEL);
1612                                 if (*pbuf == NULL)
1613                                         goto fail;
1614                                 memcpy(*pbuf, pdata, len);
1615                                 return 0;
1616                         }
1617                 }
1618         }
1619         brcms_err(wl->wlc->hw->d11core,
1620                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1621         *pbuf = NULL;
1622 fail:
1623         return -ENODATA;
1624 }
1625
1626 /*
1627  * Precondition: Since this function is called in brcms_bcma_probe() context,
1628  * no locking is required.
1629  */
1630 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1631 {
1632         int i, entry;
1633         const u8 *pdata;
1634         struct firmware_hdr *hdr;
1635         for (i = 0; i < wl->fw.fw_cnt; i++) {
1636                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1637                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1638                      entry++, hdr++) {
1639                         if (le32_to_cpu(hdr->idx) == idx) {
1640                                 pdata = wl->fw.fw_bin[i]->data +
1641                                         le32_to_cpu(hdr->offset);
1642                                 if (le32_to_cpu(hdr->len) != 4) {
1643                                         brcms_err(wl->wlc->hw->d11core,
1644                                                   "ERROR: fw hdr len\n");
1645                                         return -ENOMSG;
1646                                 }
1647                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1648                                 return 0;
1649                         }
1650                 }
1651         }
1652         brcms_err(wl->wlc->hw->d11core,
1653                   "ERROR: ucode tag:%d can not be found!\n", idx);
1654         return -ENOMSG;
1655 }
1656
1657 /*
1658  * precondition: can both be called locked and unlocked
1659  */
1660 void brcms_ucode_free_buf(void *p)
1661 {
1662         kvfree(p);
1663 }
1664
1665 /*
1666  * checks validity of all firmware images loaded from user space
1667  *
1668  * Precondition: Since this function is called in brcms_bcma_probe() context,
1669  * no locking is required.
1670  */
1671 int brcms_check_firmwares(struct brcms_info *wl)
1672 {
1673         int i;
1674         int entry;
1675         int rc = 0;
1676         const struct firmware *fw;
1677         const struct firmware *fw_hdr;
1678         struct firmware_hdr *ucode_hdr;
1679         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1680                 fw =  wl->fw.fw_bin[i];
1681                 fw_hdr = wl->fw.fw_hdr[i];
1682                 if (fw == NULL && fw_hdr == NULL) {
1683                         break;
1684                 } else if (fw == NULL || fw_hdr == NULL) {
1685                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1686                                   __func__);
1687                         rc = -EBADF;
1688                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1689                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1690                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1691                                 sizeof(struct firmware_hdr));
1692                         rc = -EBADF;
1693                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1694                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1695                                   __func__, fw->size);
1696                         rc = -EBADF;
1697                 } else {
1698                         /* check if ucode section overruns firmware image */
1699                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1700                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1701                              !rc; entry++, ucode_hdr++) {
1702                                 if (le32_to_cpu(ucode_hdr->offset) +
1703                                     le32_to_cpu(ucode_hdr->len) >
1704                                     fw->size) {
1705                                         wiphy_err(wl->wiphy,
1706                                                   "%s: conflicting bin/hdr\n",
1707                                                   __func__);
1708                                         rc = -EBADF;
1709                                 }
1710                         }
1711                 }
1712         }
1713         if (rc == 0 && wl->fw.fw_cnt != i) {
1714                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1715                         wl->fw.fw_cnt);
1716                 rc = -EBADF;
1717         }
1718         return rc;
1719 }
1720
1721 /*
1722  * precondition: perimeter lock has been acquired
1723  */
1724 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1725         __must_hold(&wl->lock)
1726 {
1727         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1728
1729         spin_unlock_bh(&wl->lock);
1730         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1731         if (blocked)
1732                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1733         spin_lock_bh(&wl->lock);
1734         return blocked;
1735 }