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

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define __UNDEF_NO_VERSION__
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/etherdevice.h>
  22 #include <linux/sched.h>
  23 #include <linux/firmware.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/bcma/bcma.h>
  27 #include <net/mac80211.h>
  28 #include <defs.h>
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37 #include "debug.h"
  38 #include "led.h"
  39
  40 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  41 #define BRCMS_FLUSH_TIMEOUT     500 /* msec */
  42
  43 /* Flags we support */
  44 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  45         FIF_ALLMULTI | \
  46         FIF_FCSFAIL | \
  47         FIF_CONTROL | \
  48         FIF_OTHER_BSS | \
  49         FIF_BCN_PRBRESP_PROMISC | \
  50         FIF_PSPOLL)
  51
  52 #define CHAN2GHZ(channel, freqency, chflags)  { \
  53         .band = IEEE80211_BAND_2GHZ, \
  54         .center_freq = (freqency), \
  55         .hw_value = (channel), \
  56         .flags = chflags, \
  57         .max_antenna_gain = 0, \
  58         .max_power = 19, \
  59 }
  60
  61 #define CHAN5GHZ(channel, chflags)  { \
  62         .band = IEEE80211_BAND_5GHZ, \
  63         .center_freq = 5000 + 5*(channel), \
  64         .hw_value = (channel), \
  65         .flags = chflags, \
  66         .max_antenna_gain = 0, \
  67         .max_power = 21, \
  68 }
  69
  70 #define RATE(rate100m, _flags) { \
  71         .bitrate = (rate100m), \
  72         .flags = (_flags), \
  73         .hw_value = (rate100m / 5), \
  74 }
  75
  76 struct firmware_hdr {
  77         __le32 offset;
  78         __le32 len;
  79         __le32 idx;
  80 };
  81
  82 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  83         "brcm/bcm43xx",
  84         NULL
  85 };
  86
  87 static int n_adapters_found;
  88
  89 MODULE_AUTHOR("Broadcom Corporation");
  90 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  91 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  92 MODULE_LICENSE("Dual BSD/GPL");
  93 /* This needs to be adjusted when brcms_firmwares changes */
  94 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  95 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  96
  97 /* recognized BCMA Core IDs */
  98 static struct bcma_device_id brcms_coreid_table[] = {
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
 100         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
 101         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 102         BCMA_CORETABLE_END
 103 };
 104 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 105
 106 #if defined(CONFIG_BRCMDBG)
 107 /*
 108  * Module parameter for setting the debug message level. Available
 109  * flags are specified by the BRCM_DL_* macros in
 110  * drivers/net/wireless/brcm80211/include/defs.h.
 111  */
 112 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
 113 #endif
 114
 115 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 116         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 119         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 120         CHAN2GHZ(5, 2432, 0),
 121         CHAN2GHZ(6, 2437, 0),
 122         CHAN2GHZ(7, 2442, 0),
 123         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 126         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 127         CHAN2GHZ(12, 2467,
 128                  IEEE80211_CHAN_NO_IR |
 129                  IEEE80211_CHAN_NO_HT40PLUS),
 130         CHAN2GHZ(13, 2472,
 131                  IEEE80211_CHAN_NO_IR |
 132                  IEEE80211_CHAN_NO_HT40PLUS),
 133         CHAN2GHZ(14, 2484,
 134                  IEEE80211_CHAN_NO_IR |
 135                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 136                  IEEE80211_CHAN_NO_OFDM)
 137 };
 138
 139 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 140         /* UNII-1 */
 141         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 143         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 144         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 145         /* UNII-2 */
 146         CHAN5GHZ(52,
 147                  IEEE80211_CHAN_RADAR |
 148                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 149         CHAN5GHZ(56,
 150                  IEEE80211_CHAN_RADAR |
 151                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 152         CHAN5GHZ(60,
 153                  IEEE80211_CHAN_RADAR |
 154                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 155         CHAN5GHZ(64,
 156                  IEEE80211_CHAN_RADAR |
 157                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 158         /* MID */
 159         CHAN5GHZ(100,
 160                  IEEE80211_CHAN_RADAR |
 161                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 162         CHAN5GHZ(104,
 163                  IEEE80211_CHAN_RADAR |
 164                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 165         CHAN5GHZ(108,
 166                  IEEE80211_CHAN_RADAR |
 167                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 168         CHAN5GHZ(112,
 169                  IEEE80211_CHAN_RADAR |
 170                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 171         CHAN5GHZ(116,
 172                  IEEE80211_CHAN_RADAR |
 173                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 174         CHAN5GHZ(120,
 175                  IEEE80211_CHAN_RADAR |
 176                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 177         CHAN5GHZ(124,
 178                  IEEE80211_CHAN_RADAR |
 179                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 180         CHAN5GHZ(128,
 181                  IEEE80211_CHAN_RADAR |
 182                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 183         CHAN5GHZ(132,
 184                  IEEE80211_CHAN_RADAR |
 185                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(136,
 187                  IEEE80211_CHAN_RADAR |
 188                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 189         CHAN5GHZ(140,
 190                  IEEE80211_CHAN_RADAR |
 191                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 192                  IEEE80211_CHAN_NO_HT40MINUS),
 193         /* UNII-3 */
 194         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 197         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 198         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 199 };
 200
 201 /*
 202  * The rate table is used for both 2.4G and 5G rates. The
 203  * latter being a subset as it does not support CCK rates.
 204  */
 205 static struct ieee80211_rate legacy_ratetable[] = {
 206         RATE(10, 0),
 207         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 209         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 210         RATE(60, 0),
 211         RATE(90, 0),
 212         RATE(120, 0),
 213         RATE(180, 0),
 214         RATE(240, 0),
 215         RATE(360, 0),
 216         RATE(480, 0),
 217         RATE(540, 0),
 218 };
 219
 220 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 221         .band = IEEE80211_BAND_2GHZ,
 222         .channels = brcms_2ghz_chantable,
 223         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 224         .bitrates = legacy_ratetable,
 225         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 226         .ht_cap = {
 227                    /* from include/linux/ieee80211.h */
 228                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 229                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 230                    .ht_supported = true,
 231                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 232                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 233                    .mcs = {
 234                            /* placeholders for now */
 235                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 236                            .rx_highest = cpu_to_le16(500),
 237                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 238                    }
 239 };
 240
 241 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 242         .band = IEEE80211_BAND_5GHZ,
 243         .channels = brcms_5ghz_nphy_chantable,
 244         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 245         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 247                         BRCMS_LEGACY_5G_RATE_OFFSET,
 248         .ht_cap = {
 249                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 250                           IEEE80211_HT_CAP_SGI_40,
 251                    .ht_supported = true,
 252                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 253                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 254                    .mcs = {
 255                            /* placeholders for now */
 256                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 257                            .rx_highest = cpu_to_le16(500),
 258                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 259                    }
 260 };
 261
 262 /* flags the given rate in rateset as requested */
 263 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 264 {
 265         u32 i;
 266
 267         for (i = 0; i < rs->count; i++) {
 268                 if (rate != (rs->rates[i] & 0x7f))
 269                         continue;
 270
 271                 if (is_br)
 272                         rs->rates[i] |= BRCMS_RATE_FLAG;
 273                 else
 274                         rs->rates[i] &= BRCMS_RATE_MASK;
 275                 return;
 276         }
 277 }
 278
 279 /**
 280  * This function frees the WL per-device resources.
 281  *
 282  * This function frees resources owned by the WL device pointed to
 283  * by the wl parameter.
 284  *
 285  * precondition: can both be called locked and unlocked
 286  *
 287  */
 288 static void brcms_free(struct brcms_info *wl)
 289 {
 290         struct brcms_timer *t, *next;
 291
 292         /* free ucode data */
 293         if (wl->fw.fw_cnt)
 294                 brcms_ucode_data_free(&wl->ucode);
 295         if (wl->irq)
 296                 free_irq(wl->irq, wl);
 297
 298         /* kill dpc */
 299         tasklet_kill(&wl->tasklet);
 300
 301         if (wl->pub) {
 302                 brcms_debugfs_detach(wl->pub);
 303                 brcms_c_module_unregister(wl->pub, "linux", wl);
 304         }
 305
 306         /* free common resources */
 307         if (wl->wlc) {
 308                 brcms_c_detach(wl->wlc);
 309                 wl->wlc = NULL;
 310                 wl->pub = NULL;
 311         }
 312
 313         /* virtual interface deletion is deferred so we cannot spinwait */
 314
 315         /* wait for all pending callbacks to complete */
 316         while (atomic_read(&wl->callbacks) > 0)
 317                 schedule();
 318
 319         /* free timers */
 320         for (t = wl->timers; t; t = next) {
 321                 next = t->next;
 322 #ifdef DEBUG
 323                 kfree(t->name);
 324 #endif
 325                 kfree(t);
 326         }
 327 }
 328
 329 /*
 330 * called from both kernel as from this kernel module (error flow on attach)
 331 * precondition: perimeter lock is not acquired.
 332 */
 333 static void brcms_remove(struct bcma_device *pdev)
 334 {
 335         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 336         struct brcms_info *wl = hw->priv;
 337
 338         if (wl->wlc) {
 339                 brcms_led_unregister(wl);
 340                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 341                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 342                 ieee80211_unregister_hw(hw);
 343         }
 344
 345         brcms_free(wl);
 346
 347         bcma_set_drvdata(pdev, NULL);
 348         ieee80211_free_hw(hw);
 349 }
 350
 351 /*
 352  * Precondition: Since this function is called in brcms_pci_probe() context,
 353  * no locking is required.
 354  */
 355 static void brcms_release_fw(struct brcms_info *wl)
 356 {
 357         int i;
 358         for (i = 0; i < MAX_FW_IMAGES; i++) {
 359                 release_firmware(wl->fw.fw_bin[i]);
 360                 release_firmware(wl->fw.fw_hdr[i]);
 361         }
 362 }
 363
 364 /*
 365  * Precondition: Since this function is called in brcms_pci_probe() context,
 366  * no locking is required.
 367  */
 368 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 369 {
 370         int status;
 371         struct device *device = &pdev->dev;
 372         char fw_name[100];
 373         int i;
 374
 375         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 376         for (i = 0; i < MAX_FW_IMAGES; i++) {
 377                 if (brcms_firmwares[i] == NULL)
 378                         break;
 379                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 380                         UCODE_LOADER_API_VER);
 381                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 382                 if (status) {
 383                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 384                                   KBUILD_MODNAME, fw_name);
 385                         return status;
 386                 }
 387                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 388                         UCODE_LOADER_API_VER);
 389                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 390                 if (status) {
 391                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 392                                   KBUILD_MODNAME, fw_name);
 393                         return status;
 394                 }
 395                 wl->fw.hdr_num_entries[i] =
 396                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 397         }
 398         wl->fw.fw_cnt = i;
 399         status = brcms_ucode_data_init(wl, &wl->ucode);
 400         brcms_release_fw(wl);
 401         return status;
 402 }
 403
 404 static void brcms_ops_tx(struct ieee80211_hw *hw,
 405                          struct ieee80211_tx_control *control,
 406                          struct sk_buff *skb)
 407 {
 408         struct brcms_info *wl = hw->priv;
 409         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 410
 411         spin_lock_bh(&wl->lock);
 412         if (!wl->pub->up) {
 413                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 414                 kfree_skb(skb);
 415                 goto done;
 416         }
 417         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 418                 tx_info->rate_driver_data[0] = control->sta;
 419  done:
 420         spin_unlock_bh(&wl->lock);
 421 }
 422
 423 static int brcms_ops_start(struct ieee80211_hw *hw)
 424 {
 425         struct brcms_info *wl = hw->priv;
 426         bool blocked;
 427         int err;
 428
 429         if (!wl->ucode.bcm43xx_bomminor) {
 430                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 431                 if (err)
 432                         return -ENOENT;
 433         }
 434
 435         ieee80211_wake_queues(hw);
 436         spin_lock_bh(&wl->lock);
 437         blocked = brcms_rfkill_set_hw_state(wl);
 438         spin_unlock_bh(&wl->lock);
 439         if (!blocked)
 440                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 441
 442         spin_lock_bh(&wl->lock);
 443         /* avoid acknowledging frames before a non-monitor device is added */
 444         wl->mute_tx = true;
 445
 446         if (!wl->pub->up)
 447                 if (!blocked)
 448                         err = brcms_up(wl);
 449                 else
 450                         err = -ERFKILL;
 451         else
 452                 err = -ENODEV;
 453         spin_unlock_bh(&wl->lock);
 454
 455         if (err != 0)
 456                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 457                           __func__, err);
 458
 459         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 460         return err;
 461 }
 462
 463 static void brcms_ops_stop(struct ieee80211_hw *hw)
 464 {
 465         struct brcms_info *wl = hw->priv;
 466         int status;
 467
 468         ieee80211_stop_queues(hw);
 469
 470         if (wl->wlc == NULL)
 471                 return;
 472
 473         spin_lock_bh(&wl->lock);
 474         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 475         spin_unlock_bh(&wl->lock);
 476         if (!status) {
 477                 brcms_err(wl->wlc->hw->d11core,
 478                           "wl: brcms_ops_stop: chipmatch failed\n");
 479                 return;
 480         }
 481
 482         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 483
 484         /* put driver in down state */
 485         spin_lock_bh(&wl->lock);
 486         brcms_down(wl);
 487         spin_unlock_bh(&wl->lock);
 488 }
 489
 490 static int
 491 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 492 {
 493         struct brcms_info *wl = hw->priv;
 494
 495         /* Just STA, AP and ADHOC for now */
 496         if (vif->type != NL80211_IFTYPE_STATION &&
 497             vif->type != NL80211_IFTYPE_AP &&
 498             vif->type != NL80211_IFTYPE_ADHOC) {
 499                 brcms_err(wl->wlc->hw->d11core,
 500                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 501                           __func__, vif->type);
 502                 return -EOPNOTSUPP;
 503         }
 504
 505         spin_lock_bh(&wl->lock);
 506         wl->mute_tx = false;
 507         brcms_c_mute(wl->wlc, false);
 508         if (vif->type == NL80211_IFTYPE_STATION)
 509                 brcms_c_start_station(wl->wlc, vif->addr);
 510         else if (vif->type == NL80211_IFTYPE_AP)
 511                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 512                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 513         else if (vif->type == NL80211_IFTYPE_ADHOC)
 514                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 515         spin_unlock_bh(&wl->lock);
 516
 517         return 0;
 518 }
 519
 520 static void
 521 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 522 {
 523 }
 524
 525 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 526 {
 527         struct ieee80211_conf *conf = &hw->conf;
 528         struct brcms_info *wl = hw->priv;
 529         struct bcma_device *core = wl->wlc->hw->d11core;
 530         int err = 0;
 531         int new_int;
 532
 533         spin_lock_bh(&wl->lock);
 534         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 535                 brcms_c_set_beacon_listen_interval(wl->wlc,
 536                                                    conf->listen_interval);
 537         }
 538         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 539                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 540                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 541                                "true" : "false");
 542         if (changed & IEEE80211_CONF_CHANGE_PS)
 543                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 544                           __func__, conf->flags & IEEE80211_CONF_PS ?
 545                           "true" : "false");
 546
 547         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 548                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 549                 if (err < 0) {
 550                         brcms_err(core, "%s: Error setting power_level\n",
 551                                   __func__);
 552                         goto config_out;
 553                 }
 554                 new_int = brcms_c_get_tx_power(wl->wlc);
 555                 if (new_int != conf->power_level)
 556                         brcms_err(core,
 557                                   "%s: Power level req != actual, %d %d\n",
 558                                   __func__, conf->power_level,
 559                                   new_int);
 560         }
 561         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 562                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 563                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 564                         err = brcms_c_set_channel(wl->wlc,
 565                                                   conf->chandef.chan->hw_value);
 566                 else
 567                         err = -ENOTSUPP;
 568         }
 569         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 570                 err = brcms_c_set_rate_limit(wl->wlc,
 571                                              conf->short_frame_max_tx_count,
 572                                              conf->long_frame_max_tx_count);
 573
 574  config_out:
 575         spin_unlock_bh(&wl->lock);
 576         return err;
 577 }
 578
 579 static void
 580 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 581                         struct ieee80211_vif *vif,
 582                         struct ieee80211_bss_conf *info, u32 changed)
 583 {
 584         struct brcms_info *wl = hw->priv;
 585         struct bcma_device *core = wl->wlc->hw->d11core;
 586
 587         if (changed & BSS_CHANGED_ASSOC) {
 588                 /* association status changed (associated/disassociated)
 589                  * also implies a change in the AID.
 590                  */
 591                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 592                           __func__, info->assoc ? "" : "dis");
 593                 spin_lock_bh(&wl->lock);
 594                 brcms_c_associate_upd(wl->wlc, info->assoc);
 595                 spin_unlock_bh(&wl->lock);
 596         }
 597         if (changed & BSS_CHANGED_ERP_SLOT) {
 598                 s8 val;
 599
 600                 /* slot timing changed */
 601                 if (info->use_short_slot)
 602                         val = 1;
 603                 else
 604                         val = 0;
 605                 spin_lock_bh(&wl->lock);
 606                 brcms_c_set_shortslot_override(wl->wlc, val);
 607                 spin_unlock_bh(&wl->lock);
 608         }
 609
 610         if (changed & BSS_CHANGED_HT) {
 611                 /* 802.11n parameters changed */
 612                 u16 mode = info->ht_operation_mode;
 613
 614                 spin_lock_bh(&wl->lock);
 615                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 616                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 617                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 618                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 619                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 620                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 621                 spin_unlock_bh(&wl->lock);
 622         }
 623         if (changed & BSS_CHANGED_BASIC_RATES) {
 624                 struct ieee80211_supported_band *bi;
 625                 u32 br_mask, i;
 626                 u16 rate;
 627                 struct brcm_rateset rs;
 628                 int error;
 629
 630                 /* retrieve the current rates */
 631                 spin_lock_bh(&wl->lock);
 632                 brcms_c_get_current_rateset(wl->wlc, &rs);
 633                 spin_unlock_bh(&wl->lock);
 634
 635                 br_mask = info->basic_rates;
 636                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 637                 for (i = 0; i < bi->n_bitrates; i++) {
 638                         /* convert to internal rate value */
 639                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 640
 641                         /* set/clear basic rate flag */
 642                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 643                         br_mask >>= 1;
 644                 }
 645
 646                 /* update the rate set */
 647                 spin_lock_bh(&wl->lock);
 648                 error = brcms_c_set_rateset(wl->wlc, &rs);
 649                 spin_unlock_bh(&wl->lock);
 650                 if (error)
 651                         brcms_err(core, "changing basic rates failed: %d\n",
 652                                   error);
 653         }
 654         if (changed & BSS_CHANGED_BEACON_INT) {
 655                 /* Beacon interval changed */
 656                 spin_lock_bh(&wl->lock);
 657                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 658                 spin_unlock_bh(&wl->lock);
 659         }
 660         if (changed & BSS_CHANGED_BSSID) {
 661                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 662                 spin_lock_bh(&wl->lock);
 663                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 664                 spin_unlock_bh(&wl->lock);
 665         }
 666         if (changed & BSS_CHANGED_SSID) {
 667                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 668                 spin_lock_bh(&wl->lock);
 669                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 670                 spin_unlock_bh(&wl->lock);
 671         }
 672         if (changed & BSS_CHANGED_BEACON) {
 673                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 674                 struct sk_buff *beacon;
 675                 u16 tim_offset = 0;
 676
 677                 spin_lock_bh(&wl->lock);
 678                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 679                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 680                                        info->dtim_period);
 681                 spin_unlock_bh(&wl->lock);
 682         }
 683
 684         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 685                 struct sk_buff *probe_resp;
 686
 687                 spin_lock_bh(&wl->lock);
 688                 probe_resp = ieee80211_proberesp_get(hw, vif);
 689                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 690                 spin_unlock_bh(&wl->lock);
 691         }
 692
 693         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 694                 /* Beaconing should be enabled/disabled (beaconing modes) */
 695                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 696                           info->enable_beacon ? "true" : "false");
 697                 if (info->enable_beacon &&
 698                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 699                         brcms_c_enable_probe_resp(wl->wlc, true);
 700                 } else {
 701                         brcms_c_enable_probe_resp(wl->wlc, false);
 702                 }
 703         }
 704
 705         if (changed & BSS_CHANGED_CQM) {
 706                 /* Connection quality monitor config changed */
 707                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 708                           " (implement)\n", __func__, info->cqm_rssi_thold,
 709                           info->cqm_rssi_hyst);
 710         }
 711
 712         if (changed & BSS_CHANGED_IBSS) {
 713                 /* IBSS join status changed */
 714                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 715                           __func__, info->ibss_joined ? "true" : "false");
 716         }
 717
 718         if (changed & BSS_CHANGED_ARP_FILTER) {
 719                 /* Hardware ARP filter address list or state changed */
 720                 brcms_err(core, "%s: arp filtering: %d addresses"
 721                           " (implement)\n", __func__, info->arp_addr_cnt);
 722         }
 723
 724         if (changed & BSS_CHANGED_QOS) {
 725                 /*
 726                  * QoS for this association was enabled/disabled.
 727                  * Note that it is only ever disabled for station mode.
 728                  */
 729                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 730                           __func__, info->qos ? "true" : "false");
 731         }
 732         return;
 733 }
 734
 735 static void
 736 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 737                         unsigned int changed_flags,
 738                         unsigned int *total_flags, u64 multicast)
 739 {
 740         struct brcms_info *wl = hw->priv;
 741         struct bcma_device *core = wl->wlc->hw->d11core;
 742
 743         changed_flags &= MAC_FILTERS;
 744         *total_flags &= MAC_FILTERS;
 745
 746         if (changed_flags & FIF_PROMISC_IN_BSS)
 747                 brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n");
 748         if (changed_flags & FIF_ALLMULTI)
 749                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 750         if (changed_flags & FIF_FCSFAIL)
 751                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 752         if (changed_flags & FIF_CONTROL)
 753                 brcms_dbg_info(core, "FIF_CONTROL\n");
 754         if (changed_flags & FIF_OTHER_BSS)
 755                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 756         if (changed_flags & FIF_PSPOLL)
 757                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 758         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 759                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 760
 761         spin_lock_bh(&wl->lock);
 762         brcms_c_mac_promisc(wl->wlc, *total_flags);
 763         spin_unlock_bh(&wl->lock);
 764         return;
 765 }
 766
 767 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 768 {
 769         struct brcms_info *wl = hw->priv;
 770         spin_lock_bh(&wl->lock);
 771         brcms_c_scan_start(wl->wlc);
 772         spin_unlock_bh(&wl->lock);
 773         return;
 774 }
 775
 776 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 777 {
 778         struct brcms_info *wl = hw->priv;
 779         spin_lock_bh(&wl->lock);
 780         brcms_c_scan_stop(wl->wlc);
 781         spin_unlock_bh(&wl->lock);
 782         return;
 783 }
 784
 785 static int
 786 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 787                   const struct ieee80211_tx_queue_params *params)
 788 {
 789         struct brcms_info *wl = hw->priv;
 790
 791         spin_lock_bh(&wl->lock);
 792         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 793         spin_unlock_bh(&wl->lock);
 794
 795         return 0;
 796 }
 797
 798 static int
 799 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 800                struct ieee80211_sta *sta)
 801 {
 802         struct brcms_info *wl = hw->priv;
 803         struct scb *scb = &wl->wlc->pri_scb;
 804
 805         brcms_c_init_scb(scb);
 806
 807         wl->pub->global_ampdu = &(scb->scb_ampdu);
 808         wl->pub->global_ampdu->scb = scb;
 809         wl->pub->global_ampdu->max_pdu = 16;
 810
 811         /*
 812          * minstrel_ht initiates addBA on our behalf by calling
 813          * ieee80211_start_tx_ba_session()
 814          */
 815         return 0;
 816 }
 817
 818 static int
 819 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 820                     struct ieee80211_vif *vif,
 821                     enum ieee80211_ampdu_mlme_action action,
 822                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 823                     u8 buf_size)
 824 {
 825         struct brcms_info *wl = hw->priv;
 826         struct scb *scb = &wl->wlc->pri_scb;
 827         int status;
 828
 829         if (WARN_ON(scb->magic != SCB_MAGIC))
 830                 return -EIDRM;
 831         switch (action) {
 832         case IEEE80211_AMPDU_RX_START:
 833                 break;
 834         case IEEE80211_AMPDU_RX_STOP:
 835                 break;
 836         case IEEE80211_AMPDU_TX_START:
 837                 spin_lock_bh(&wl->lock);
 838                 status = brcms_c_aggregatable(wl->wlc, tid);
 839                 spin_unlock_bh(&wl->lock);
 840                 if (!status) {
 841                         brcms_err(wl->wlc->hw->d11core,
 842                                   "START: tid %d is not agg\'able\n", tid);
 843                         return -EINVAL;
 844                 }
 845                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 846                 break;
 847
 848         case IEEE80211_AMPDU_TX_STOP_CONT:
 849         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 850         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 851                 spin_lock_bh(&wl->lock);
 852                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 853                 spin_unlock_bh(&wl->lock);
 854                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 855                 break;
 856         case IEEE80211_AMPDU_TX_OPERATIONAL:
 857                 /*
 858                  * BA window size from ADDBA response ('buf_size') defines how
 859                  * many outstanding MPDUs are allowed for the BA stream by
 860                  * recipient and traffic class. 'ampdu_factor' gives maximum
 861                  * AMPDU size.
 862                  */
 863                 spin_lock_bh(&wl->lock);
 864                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 865                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 866                          sta->ht_cap.ampdu_factor)) - 1);
 867                 spin_unlock_bh(&wl->lock);
 868                 /* Power save wakeup */
 869                 break;
 870         default:
 871                 brcms_err(wl->wlc->hw->d11core,
 872                           "%s: Invalid command, ignoring\n", __func__);
 873         }
 874
 875         return 0;
 876 }
 877
 878 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 879 {
 880         struct brcms_info *wl = hw->priv;
 881         bool blocked;
 882
 883         spin_lock_bh(&wl->lock);
 884         blocked = brcms_c_check_radio_disabled(wl->wlc);
 885         spin_unlock_bh(&wl->lock);
 886
 887         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 888 }
 889
 890 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 891 {
 892         bool result;
 893
 894         spin_lock_bh(&wl->lock);
 895         result = brcms_c_tx_flush_completed(wl->wlc);
 896         spin_unlock_bh(&wl->lock);
 897         return result;
 898 }
 899
 900 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 901                             u32 queues, bool drop)
 902 {
 903         struct brcms_info *wl = hw->priv;
 904         int ret;
 905
 906         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 907
 908         ret = wait_event_timeout(wl->tx_flush_wq,
 909                                  brcms_tx_flush_completed(wl),
 910                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 911
 912         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 913                            "ret=%d\n", jiffies_to_msecs(ret));
 914 }
 915
 916 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 917 {
 918         struct brcms_info *wl = hw->priv;
 919         u64 tsf;
 920
 921         spin_lock_bh(&wl->lock);
 922         tsf = brcms_c_tsf_get(wl->wlc);
 923         spin_unlock_bh(&wl->lock);
 924
 925         return tsf;
 926 }
 927
 928 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 929                            struct ieee80211_vif *vif, u64 tsf)
 930 {
 931         struct brcms_info *wl = hw->priv;
 932
 933         spin_lock_bh(&wl->lock);
 934         brcms_c_tsf_set(wl->wlc, tsf);
 935         spin_unlock_bh(&wl->lock);
 936 }
 937
 938 static const struct ieee80211_ops brcms_ops = {
 939         .tx = brcms_ops_tx,
 940         .start = brcms_ops_start,
 941         .stop = brcms_ops_stop,
 942         .add_interface = brcms_ops_add_interface,
 943         .remove_interface = brcms_ops_remove_interface,
 944         .config = brcms_ops_config,
 945         .bss_info_changed = brcms_ops_bss_info_changed,
 946         .configure_filter = brcms_ops_configure_filter,
 947         .sw_scan_start = brcms_ops_sw_scan_start,
 948         .sw_scan_complete = brcms_ops_sw_scan_complete,
 949         .conf_tx = brcms_ops_conf_tx,
 950         .sta_add = brcms_ops_sta_add,
 951         .ampdu_action = brcms_ops_ampdu_action,
 952         .rfkill_poll = brcms_ops_rfkill_poll,
 953         .flush = brcms_ops_flush,
 954         .get_tsf = brcms_ops_get_tsf,
 955         .set_tsf = brcms_ops_set_tsf,
 956 };
 957
 958 void brcms_dpc(unsigned long data)
 959 {
 960         struct brcms_info *wl;
 961
 962         wl = (struct brcms_info *) data;
 963
 964         spin_lock_bh(&wl->lock);
 965
 966         /* call the common second level interrupt handler */
 967         if (wl->pub->up) {
 968                 if (wl->resched) {
 969                         unsigned long flags;
 970
 971                         spin_lock_irqsave(&wl->isr_lock, flags);
 972                         brcms_c_intrsupd(wl->wlc);
 973                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 974                 }
 975
 976                 wl->resched = brcms_c_dpc(wl->wlc, true);
 977         }
 978
 979         /* brcms_c_dpc() may bring the driver down */
 980         if (!wl->pub->up)
 981                 goto done;
 982
 983         /* re-schedule dpc */
 984         if (wl->resched)
 985                 tasklet_schedule(&wl->tasklet);
 986         else
 987                 /* re-enable interrupts */
 988                 brcms_intrson(wl);
 989
 990  done:
 991         spin_unlock_bh(&wl->lock);
 992         wake_up(&wl->tx_flush_wq);
 993 }
 994
 995 static irqreturn_t brcms_isr(int irq, void *dev_id)
 996 {
 997         struct brcms_info *wl;
 998         irqreturn_t ret = IRQ_NONE;
 999
1000         wl = (struct brcms_info *) dev_id;
1001
1002         spin_lock(&wl->isr_lock);
1003
1004         /* call common first level interrupt handler */
1005         if (brcms_c_isr(wl->wlc)) {
1006                 /* schedule second level handler */
1007                 tasklet_schedule(&wl->tasklet);
1008                 ret = IRQ_HANDLED;
1009         }
1010
1011         spin_unlock(&wl->isr_lock);
1012
1013         return ret;
1014 }
1015
1016 /*
1017  * is called in brcms_pci_probe() context, therefore no locking required.
1018  */
1019 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1020 {
1021         struct brcms_info *wl = hw->priv;
1022         struct brcms_c_info *wlc = wl->wlc;
1023         struct ieee80211_supported_band *band;
1024         int has_5g = 0;
1025         u16 phy_type;
1026
1027         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1028         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1029
1030         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1031         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1032                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1033                 *band = brcms_band_2GHz_nphy_template;
1034                 if (phy_type == PHY_TYPE_LCN) {
1035                         /* Single stream */
1036                         band->ht_cap.mcs.rx_mask[1] = 0;
1037                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1038                 }
1039                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1040         } else {
1041                 return -EPERM;
1042         }
1043
1044         /* Assume all bands use the same phy.  True for 11n devices. */
1045         if (wl->pub->_nbands > 1) {
1046                 has_5g++;
1047                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1048                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1049                         *band = brcms_band_5GHz_nphy_template;
1050                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1051                 } else {
1052                         return -EPERM;
1053                 }
1054         }
1055         return 0;
1056 }
1057
1058 /*
1059  * is called in brcms_pci_probe() context, therefore no locking required.
1060  */
1061 static int ieee_hw_init(struct ieee80211_hw *hw)
1062 {
1063         hw->flags = IEEE80211_HW_SIGNAL_DBM
1064             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1065             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1066             | IEEE80211_HW_AMPDU_AGGREGATION;
1067
1068         hw->extra_tx_headroom = brcms_c_get_header_len();
1069         hw->queues = N_TX_QUEUES;
1070         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1071
1072         /* channel change time is dependent on chip and band  */
1073         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1074                                      BIT(NL80211_IFTYPE_AP) |
1075                                      BIT(NL80211_IFTYPE_ADHOC);
1076
1077         /*
1078          * deactivate sending probe responses by ucude, because this will
1079          * cause problems when WPS is used.
1080          *
1081          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1082          */
1083
1084         hw->rate_control_algorithm = "minstrel_ht";
1085
1086         hw->sta_data_size = 0;
1087         return ieee_hw_rate_init(hw);
1088 }
1089
1090 /**
1091  * attach to the WL device.
1092  *
1093  * Attach to the WL device identified by vendor and device parameters.
1094  * regs is a host accessible memory address pointing to WL device registers.
1095  *
1096  * is called in brcms_bcma_probe() context, therefore no locking required.
1097  */
1098 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1099 {
1100         struct brcms_info *wl = NULL;
1101         int unit, err;
1102         struct ieee80211_hw *hw;
1103         u8 perm[ETH_ALEN];
1104
1105         unit = n_adapters_found;
1106         err = 0;
1107
1108         if (unit < 0)
1109                 return NULL;
1110
1111         /* allocate private info */
1112         hw = bcma_get_drvdata(pdev);
1113         if (hw != NULL)
1114                 wl = hw->priv;
1115         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1116                 return NULL;
1117         wl->wiphy = hw->wiphy;
1118
1119         atomic_set(&wl->callbacks, 0);
1120
1121         init_waitqueue_head(&wl->tx_flush_wq);
1122
1123         /* setup the bottom half handler */
1124         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1125
1126         spin_lock_init(&wl->lock);
1127         spin_lock_init(&wl->isr_lock);
1128
1129         /* common load-time initialization */
1130         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1131         if (!wl->wlc) {
1132                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1133                           KBUILD_MODNAME, err);
1134                 goto fail;
1135         }
1136         wl->pub = brcms_c_pub(wl->wlc);
1137
1138         wl->pub->ieee_hw = hw;
1139
1140         /* register our interrupt handler */
1141         if (request_irq(pdev->irq, brcms_isr,
1142                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1143                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1144                 goto fail;
1145         }
1146         wl->irq = pdev->irq;
1147
1148         /* register module */
1149         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1150
1151         if (ieee_hw_init(hw)) {
1152                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1153                           __func__);
1154                 goto fail;
1155         }
1156
1157         brcms_c_regd_init(wl->wlc);
1158
1159         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1160         if (WARN_ON(!is_valid_ether_addr(perm)))
1161                 goto fail;
1162         SET_IEEE80211_PERM_ADDR(hw, perm);
1163
1164         err = ieee80211_register_hw(hw);
1165         if (err)
1166                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1167                           "%d\n", __func__, err);
1168
1169         if (wl->pub->srom_ccode[0] &&
1170             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1171                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1172
1173         brcms_debugfs_attach(wl->pub);
1174         brcms_debugfs_create_files(wl->pub);
1175         n_adapters_found++;
1176         return wl;
1177
1178 fail:
1179         brcms_free(wl);
1180         return NULL;
1181 }
1182
1183
1184
1185 /**
1186  * determines if a device is a WL device, and if so, attaches it.
1187  *
1188  * This function determines if a device pointed to by pdev is a WL device,
1189  * and if so, performs a brcms_attach() on it.
1190  *
1191  * Perimeter lock is initialized in the course of this function.
1192  */
1193 static int brcms_bcma_probe(struct bcma_device *pdev)
1194 {
1195         struct brcms_info *wl;
1196         struct ieee80211_hw *hw;
1197
1198         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1199                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1200                  pdev->irq);
1201
1202         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1203             (pdev->id.id != BCMA_CORE_80211))
1204                 return -ENODEV;
1205
1206         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1207         if (!hw) {
1208                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1209                 return -ENOMEM;
1210         }
1211
1212         SET_IEEE80211_DEV(hw, &pdev->dev);
1213
1214         bcma_set_drvdata(pdev, hw);
1215
1216         memset(hw->priv, 0, sizeof(*wl));
1217
1218         wl = brcms_attach(pdev);
1219         if (!wl) {
1220                 pr_err("%s: brcms_attach failed!\n", __func__);
1221                 return -ENODEV;
1222         }
1223         brcms_led_register(wl);
1224
1225         return 0;
1226 }
1227
1228 static int brcms_suspend(struct bcma_device *pdev)
1229 {
1230         struct brcms_info *wl;
1231         struct ieee80211_hw *hw;
1232
1233         hw = bcma_get_drvdata(pdev);
1234         wl = hw->priv;
1235         if (!wl) {
1236                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1237                        __func__);
1238                 return -ENODEV;
1239         }
1240
1241         /* only need to flag hw is down for proper resume */
1242         spin_lock_bh(&wl->lock);
1243         wl->pub->hw_up = false;
1244         spin_unlock_bh(&wl->lock);
1245
1246         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1247
1248         return 0;
1249 }
1250
1251 static int brcms_resume(struct bcma_device *pdev)
1252 {
1253         return 0;
1254 }
1255
1256 static struct bcma_driver brcms_bcma_driver = {
1257         .name     = KBUILD_MODNAME,
1258         .probe    = brcms_bcma_probe,
1259         .suspend  = brcms_suspend,
1260         .resume   = brcms_resume,
1261         .remove   = brcms_remove,
1262         .id_table = brcms_coreid_table,
1263 };
1264
1265 /**
1266  * This is the main entry point for the brcmsmac driver.
1267  *
1268  * This function is scheduled upon module initialization and
1269  * does the driver registration, which result in brcms_bcma_probe()
1270  * call resulting in the driver bringup.
1271  */
1272 static void brcms_driver_init(struct work_struct *work)
1273 {
1274         int error;
1275
1276         error = bcma_driver_register(&brcms_bcma_driver);
1277         if (error)
1278                 pr_err("%s: register returned %d\n", __func__, error);
1279 }
1280
1281 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1282
1283 static int __init brcms_module_init(void)
1284 {
1285         brcms_debugfs_init();
1286         if (!schedule_work(&brcms_driver_work))
1287                 return -EBUSY;
1288
1289         return 0;
1290 }
1291
1292 /**
1293  * This function unloads the brcmsmac driver from the system.
1294  *
1295  * This function unconditionally unloads the brcmsmac driver module from the
1296  * system.
1297  *
1298  */
1299 static void __exit brcms_module_exit(void)
1300 {
1301         cancel_work_sync(&brcms_driver_work);
1302         bcma_driver_unregister(&brcms_bcma_driver);
1303         brcms_debugfs_exit();
1304 }
1305
1306 module_init(brcms_module_init);
1307 module_exit(brcms_module_exit);
1308
1309 /*
1310  * precondition: perimeter lock has been acquired
1311  */
1312 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1313                          bool state, int prio)
1314 {
1315         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1316 }
1317
1318 /*
1319  * precondition: perimeter lock has been acquired
1320  */
1321 void brcms_init(struct brcms_info *wl)
1322 {
1323         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1324                        wl->pub->unit);
1325         brcms_reset(wl);
1326         brcms_c_init(wl->wlc, wl->mute_tx);
1327 }
1328
1329 /*
1330  * precondition: perimeter lock has been acquired
1331  */
1332 uint brcms_reset(struct brcms_info *wl)
1333 {
1334         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1335         brcms_c_reset(wl->wlc);
1336
1337         /* dpc will not be rescheduled */
1338         wl->resched = false;
1339
1340         /* inform publicly that interface is down */
1341         wl->pub->up = false;
1342
1343         return 0;
1344 }
1345
1346 void brcms_fatal_error(struct brcms_info *wl)
1347 {
1348         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1349                   wl->wlc->pub->unit);
1350         brcms_reset(wl);
1351         ieee80211_restart_hw(wl->pub->ieee_hw);
1352 }
1353
1354 /*
1355  * These are interrupt on/off entry points. Disable interrupts
1356  * during interrupt state transition.
1357  */
1358 void brcms_intrson(struct brcms_info *wl)
1359 {
1360         unsigned long flags;
1361
1362         spin_lock_irqsave(&wl->isr_lock, flags);
1363         brcms_c_intrson(wl->wlc);
1364         spin_unlock_irqrestore(&wl->isr_lock, flags);
1365 }
1366
1367 u32 brcms_intrsoff(struct brcms_info *wl)
1368 {
1369         unsigned long flags;
1370         u32 status;
1371
1372         spin_lock_irqsave(&wl->isr_lock, flags);
1373         status = brcms_c_intrsoff(wl->wlc);
1374         spin_unlock_irqrestore(&wl->isr_lock, flags);
1375         return status;
1376 }
1377
1378 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1379 {
1380         unsigned long flags;
1381
1382         spin_lock_irqsave(&wl->isr_lock, flags);
1383         brcms_c_intrsrestore(wl->wlc, macintmask);
1384         spin_unlock_irqrestore(&wl->isr_lock, flags);
1385 }
1386
1387 /*
1388  * precondition: perimeter lock has been acquired
1389  */
1390 int brcms_up(struct brcms_info *wl)
1391 {
1392         int error = 0;
1393
1394         if (wl->pub->up)
1395                 return 0;
1396
1397         error = brcms_c_up(wl->wlc);
1398
1399         return error;
1400 }
1401
1402 /*
1403  * precondition: perimeter lock has been acquired
1404  */
1405 void brcms_down(struct brcms_info *wl)
1406 {
1407         uint callbacks, ret_val = 0;
1408
1409         /* call common down function */
1410         ret_val = brcms_c_down(wl->wlc);
1411         callbacks = atomic_read(&wl->callbacks) - ret_val;
1412
1413         /* wait for down callbacks to complete */
1414         spin_unlock_bh(&wl->lock);
1415
1416         /* For HIGH_only driver, it's important to actually schedule other work,
1417          * not just spin wait since everything runs at schedule level
1418          */
1419         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1420
1421         spin_lock_bh(&wl->lock);
1422 }
1423
1424 /*
1425 * precondition: perimeter lock is not acquired
1426  */
1427 static void _brcms_timer(struct work_struct *work)
1428 {
1429         struct brcms_timer *t = container_of(work, struct brcms_timer,
1430                                              dly_wrk.work);
1431
1432         spin_lock_bh(&t->wl->lock);
1433
1434         if (t->set) {
1435                 if (t->periodic) {
1436                         atomic_inc(&t->wl->callbacks);
1437                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1438                                                      &t->dly_wrk,
1439                                                      msecs_to_jiffies(t->ms));
1440                 } else {
1441                         t->set = false;
1442                 }
1443
1444                 t->fn(t->arg);
1445         }
1446
1447         atomic_dec(&t->wl->callbacks);
1448
1449         spin_unlock_bh(&t->wl->lock);
1450 }
1451
1452 /*
1453  * Adds a timer to the list. Caller supplies a timer function.
1454  * Is called from wlc.
1455  *
1456  * precondition: perimeter lock has been acquired
1457  */
1458 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1459                                      void (*fn) (void *arg),
1460                                      void *arg, const char *name)
1461 {
1462         struct brcms_timer *t;
1463
1464         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1465         if (!t)
1466                 return NULL;
1467
1468         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1469         t->wl = wl;
1470         t->fn = fn;
1471         t->arg = arg;
1472         t->next = wl->timers;
1473         wl->timers = t;
1474
1475 #ifdef DEBUG
1476         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1477         if (t->name)
1478                 strcpy(t->name, name);
1479 #endif
1480
1481         return t;
1482 }
1483
1484 /*
1485  * adds only the kernel timer since it's going to be more accurate
1486  * as well as it's easier to make it periodic
1487  *
1488  * precondition: perimeter lock has been acquired
1489  */
1490 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1491 {
1492         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1493
1494 #ifdef DEBUG
1495         if (t->set)
1496                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1497                                "%s: Already set. Name: %s, per %d\n",
1498                                __func__, t->name, periodic);
1499 #endif
1500         t->ms = ms;
1501         t->periodic = (bool) periodic;
1502         if (!t->set) {
1503                 t->set = true;
1504                 atomic_inc(&t->wl->callbacks);
1505         }
1506
1507         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1508 }
1509
1510 /*
1511  * return true if timer successfully deleted, false if still pending
1512  *
1513  * precondition: perimeter lock has been acquired
1514  */
1515 bool brcms_del_timer(struct brcms_timer *t)
1516 {
1517         if (t->set) {
1518                 t->set = false;
1519                 if (!cancel_delayed_work(&t->dly_wrk))
1520                         return false;
1521
1522                 atomic_dec(&t->wl->callbacks);
1523         }
1524
1525         return true;
1526 }
1527
1528 /*
1529  * precondition: perimeter lock has been acquired
1530  */
1531 void brcms_free_timer(struct brcms_timer *t)
1532 {
1533         struct brcms_info *wl = t->wl;
1534         struct brcms_timer *tmp;
1535
1536         /* delete the timer in case it is active */
1537         brcms_del_timer(t);
1538
1539         if (wl->timers == t) {
1540                 wl->timers = wl->timers->next;
1541 #ifdef DEBUG
1542                 kfree(t->name);
1543 #endif
1544                 kfree(t);
1545                 return;
1546
1547         }
1548
1549         tmp = wl->timers;
1550         while (tmp) {
1551                 if (tmp->next == t) {
1552                         tmp->next = t->next;
1553 #ifdef DEBUG
1554                         kfree(t->name);
1555 #endif
1556                         kfree(t);
1557                         return;
1558                 }
1559                 tmp = tmp->next;
1560         }
1561
1562 }
1563
1564 /*
1565  * precondition: perimeter lock has been acquired
1566  */
1567 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1568 {
1569         int i, entry;
1570         const u8 *pdata;
1571         struct firmware_hdr *hdr;
1572         for (i = 0; i < wl->fw.fw_cnt; i++) {
1573                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1574                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1575                      entry++, hdr++) {
1576                         u32 len = le32_to_cpu(hdr->len);
1577                         if (le32_to_cpu(hdr->idx) == idx) {
1578                                 pdata = wl->fw.fw_bin[i]->data +
1579                                         le32_to_cpu(hdr->offset);
1580                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1581                                 if (*pbuf == NULL)
1582                                         goto fail;
1583
1584                                 return 0;
1585                         }
1586                 }
1587         }
1588         brcms_err(wl->wlc->hw->d11core,
1589                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1590         *pbuf = NULL;
1591 fail:
1592         return -ENODATA;
1593 }
1594
1595 /*
1596  * Precondition: Since this function is called in brcms_bcma_probe() context,
1597  * no locking is required.
1598  */
1599 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1600 {
1601         int i, entry;
1602         const u8 *pdata;
1603         struct firmware_hdr *hdr;
1604         for (i = 0; i < wl->fw.fw_cnt; i++) {
1605                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1606                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1607                      entry++, hdr++) {
1608                         if (le32_to_cpu(hdr->idx) == idx) {
1609                                 pdata = wl->fw.fw_bin[i]->data +
1610                                         le32_to_cpu(hdr->offset);
1611                                 if (le32_to_cpu(hdr->len) != 4) {
1612                                         brcms_err(wl->wlc->hw->d11core,
1613                                                   "ERROR: fw hdr len\n");
1614                                         return -ENOMSG;
1615                                 }
1616                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1617                                 return 0;
1618                         }
1619                 }
1620         }
1621         brcms_err(wl->wlc->hw->d11core,
1622                   "ERROR: ucode tag:%d can not be found!\n", idx);
1623         return -ENOMSG;
1624 }
1625
1626 /*
1627  * precondition: can both be called locked and unlocked
1628  */
1629 void brcms_ucode_free_buf(void *p)
1630 {
1631         kfree(p);
1632 }
1633
1634 /*
1635  * checks validity of all firmware images loaded from user space
1636  *
1637  * Precondition: Since this function is called in brcms_bcma_probe() context,
1638  * no locking is required.
1639  */
1640 int brcms_check_firmwares(struct brcms_info *wl)
1641 {
1642         int i;
1643         int entry;
1644         int rc = 0;
1645         const struct firmware *fw;
1646         const struct firmware *fw_hdr;
1647         struct firmware_hdr *ucode_hdr;
1648         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1649                 fw =  wl->fw.fw_bin[i];
1650                 fw_hdr = wl->fw.fw_hdr[i];
1651                 if (fw == NULL && fw_hdr == NULL) {
1652                         break;
1653                 } else if (fw == NULL || fw_hdr == NULL) {
1654                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1655                                   __func__);
1656                         rc = -EBADF;
1657                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1658                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1659                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1660                                 sizeof(struct firmware_hdr));
1661                         rc = -EBADF;
1662                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1663                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1664                                   __func__, fw->size);
1665                         rc = -EBADF;
1666                 } else {
1667                         /* check if ucode section overruns firmware image */
1668                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1669                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1670                              !rc; entry++, ucode_hdr++) {
1671                                 if (le32_to_cpu(ucode_hdr->offset) +
1672                                     le32_to_cpu(ucode_hdr->len) >
1673                                     fw->size) {
1674                                         wiphy_err(wl->wiphy,
1675                                                   "%s: conflicting bin/hdr\n",
1676                                                   __func__);
1677                                         rc = -EBADF;
1678                                 }
1679                         }
1680                 }
1681         }
1682         if (rc == 0 && wl->fw.fw_cnt != i) {
1683                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1684                         wl->fw.fw_cnt);
1685                 rc = -EBADF;
1686         }
1687         return rc;
1688 }
1689
1690 /*
1691  * precondition: perimeter lock has been acquired
1692  */
1693 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1694 {
1695         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1696
1697         spin_unlock_bh(&wl->lock);
1698         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1699         if (blocked)
1700                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1701         spin_lock_bh(&wl->lock);
1702         return blocked;
1703 }