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

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define __UNDEF_NO_VERSION__
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/etherdevice.h>
  22 #include <linux/sched.h>
  23 #include <linux/firmware.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/bcma/bcma.h>
  27 #include <net/mac80211.h>
  28 #include <defs.h>
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37 #include "debug.h"
  38 #include "led.h"
  39
  40 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  41 #define BRCMS_FLUSH_TIMEOUT     500 /* msec */
  42
  43 /* Flags we support */
  44 #define MAC_FILTERS (FIF_ALLMULTI | \
  45         FIF_FCSFAIL | \
  46         FIF_CONTROL | \
  47         FIF_OTHER_BSS | \
  48         FIF_BCN_PRBRESP_PROMISC | \
  49         FIF_PSPOLL)
  50
  51 #define CHAN2GHZ(channel, freqency, chflags)  { \
  52         .band = 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_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  91 MODULE_LICENSE("Dual BSD/GPL");
  92 /* This needs to be adjusted when brcms_firmwares changes */
  93 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  94 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  95
  96 /* recognized BCMA Core IDs */
  97 static struct bcma_device_id brcms_coreid_table[] = {
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
 100         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 101         {},
 102 };
 103 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 104
 105 #if defined(CONFIG_BRCMDBG)
 106 /*
 107  * Module parameter for setting the debug message level. Available
 108  * flags are specified by the BRCM_DL_* macros in
 109  * drivers/net/wireless/brcm80211/include/defs.h.
 110  */
 111 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
 112 #endif
 113
 114 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 115         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 119         CHAN2GHZ(5, 2432, 0),
 120         CHAN2GHZ(6, 2437, 0),
 121         CHAN2GHZ(7, 2442, 0),
 122         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 126         CHAN2GHZ(12, 2467,
 127                  IEEE80211_CHAN_NO_IR |
 128                  IEEE80211_CHAN_NO_HT40PLUS),
 129         CHAN2GHZ(13, 2472,
 130                  IEEE80211_CHAN_NO_IR |
 131                  IEEE80211_CHAN_NO_HT40PLUS),
 132         CHAN2GHZ(14, 2484,
 133                  IEEE80211_CHAN_NO_IR |
 134                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 135                  IEEE80211_CHAN_NO_OFDM)
 136 };
 137
 138 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 139         /* UNII-1 */
 140         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 141         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 142         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 143         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 144         /* UNII-2 */
 145         CHAN5GHZ(52,
 146                  IEEE80211_CHAN_RADAR |
 147                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 148         CHAN5GHZ(56,
 149                  IEEE80211_CHAN_RADAR |
 150                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 151         CHAN5GHZ(60,
 152                  IEEE80211_CHAN_RADAR |
 153                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 154         CHAN5GHZ(64,
 155                  IEEE80211_CHAN_RADAR |
 156                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 157         /* MID */
 158         CHAN5GHZ(100,
 159                  IEEE80211_CHAN_RADAR |
 160                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 161         CHAN5GHZ(104,
 162                  IEEE80211_CHAN_RADAR |
 163                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 164         CHAN5GHZ(108,
 165                  IEEE80211_CHAN_RADAR |
 166                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 167         CHAN5GHZ(112,
 168                  IEEE80211_CHAN_RADAR |
 169                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 170         CHAN5GHZ(116,
 171                  IEEE80211_CHAN_RADAR |
 172                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 173         CHAN5GHZ(120,
 174                  IEEE80211_CHAN_RADAR |
 175                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 176         CHAN5GHZ(124,
 177                  IEEE80211_CHAN_RADAR |
 178                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 179         CHAN5GHZ(128,
 180                  IEEE80211_CHAN_RADAR |
 181                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 182         CHAN5GHZ(132,
 183                  IEEE80211_CHAN_RADAR |
 184                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 185         CHAN5GHZ(136,
 186                  IEEE80211_CHAN_RADAR |
 187                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 188         CHAN5GHZ(140,
 189                  IEEE80211_CHAN_RADAR |
 190                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 191                  IEEE80211_CHAN_NO_HT40MINUS),
 192         /* UNII-3 */
 193         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 194         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 195         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 196         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 197         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 198 };
 199
 200 /*
 201  * The rate table is used for both 2.4G and 5G rates. The
 202  * latter being a subset as it does not support CCK rates.
 203  */
 204 static struct ieee80211_rate legacy_ratetable[] = {
 205         RATE(10, 0),
 206         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 209         RATE(60, 0),
 210         RATE(90, 0),
 211         RATE(120, 0),
 212         RATE(180, 0),
 213         RATE(240, 0),
 214         RATE(360, 0),
 215         RATE(480, 0),
 216         RATE(540, 0),
 217 };
 218
 219 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 220         .band = NL80211_BAND_2GHZ,
 221         .channels = brcms_2ghz_chantable,
 222         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 223         .bitrates = legacy_ratetable,
 224         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 225         .ht_cap = {
 226                    /* from include/linux/ieee80211.h */
 227                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 228                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 229                    .ht_supported = true,
 230                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 231                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 232                    .mcs = {
 233                            /* placeholders for now */
 234                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 235                            .rx_highest = cpu_to_le16(500),
 236                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 237                    }
 238 };
 239
 240 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 241         .band = NL80211_BAND_5GHZ,
 242         .channels = brcms_5ghz_nphy_chantable,
 243         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 244         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 245         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 246                         BRCMS_LEGACY_5G_RATE_OFFSET,
 247         .ht_cap = {
 248                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 249                           IEEE80211_HT_CAP_SGI_40,
 250                    .ht_supported = true,
 251                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 252                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 253                    .mcs = {
 254                            /* placeholders for now */
 255                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 256                            .rx_highest = cpu_to_le16(500),
 257                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 258                    }
 259 };
 260
 261 /* flags the given rate in rateset as requested */
 262 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 263 {
 264         u32 i;
 265
 266         for (i = 0; i < rs->count; i++) {
 267                 if (rate != (rs->rates[i] & 0x7f))
 268                         continue;
 269
 270                 if (is_br)
 271                         rs->rates[i] |= BRCMS_RATE_FLAG;
 272                 else
 273                         rs->rates[i] &= BRCMS_RATE_MASK;
 274                 return;
 275         }
 276 }
 277
 278 /**
 279  * This function frees the WL per-device resources.
 280  *
 281  * This function frees resources owned by the WL device pointed to
 282  * by the wl parameter.
 283  *
 284  * precondition: can both be called locked and unlocked
 285  *
 286  */
 287 static void brcms_free(struct brcms_info *wl)
 288 {
 289         struct brcms_timer *t, *next;
 290
 291         /* free ucode data */
 292         if (wl->fw.fw_cnt)
 293                 brcms_ucode_data_free(&wl->ucode);
 294         if (wl->irq)
 295                 free_irq(wl->irq, wl);
 296
 297         /* kill dpc */
 298         tasklet_kill(&wl->tasklet);
 299
 300         if (wl->pub) {
 301                 brcms_debugfs_detach(wl->pub);
 302                 brcms_c_module_unregister(wl->pub, "linux", wl);
 303         }
 304
 305         /* free common resources */
 306         if (wl->wlc) {
 307                 brcms_c_detach(wl->wlc);
 308                 wl->wlc = NULL;
 309                 wl->pub = NULL;
 310         }
 311
 312         /* virtual interface deletion is deferred so we cannot spinwait */
 313
 314         /* wait for all pending callbacks to complete */
 315         while (atomic_read(&wl->callbacks) > 0)
 316                 schedule();
 317
 318         /* free timers */
 319         for (t = wl->timers; t; t = next) {
 320                 next = t->next;
 321 #ifdef DEBUG
 322                 kfree(t->name);
 323 #endif
 324                 kfree(t);
 325         }
 326 }
 327
 328 /*
 329 * called from both kernel as from this kernel module (error flow on attach)
 330 * precondition: perimeter lock is not acquired.
 331 */
 332 static void brcms_remove(struct bcma_device *pdev)
 333 {
 334         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 335         struct brcms_info *wl = hw->priv;
 336
 337         if (wl->wlc) {
 338                 brcms_led_unregister(wl);
 339                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 340                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 341                 ieee80211_unregister_hw(hw);
 342         }
 343
 344         brcms_free(wl);
 345
 346         bcma_set_drvdata(pdev, NULL);
 347         ieee80211_free_hw(hw);
 348 }
 349
 350 /*
 351  * Precondition: Since this function is called in brcms_pci_probe() context,
 352  * no locking is required.
 353  */
 354 static void brcms_release_fw(struct brcms_info *wl)
 355 {
 356         int i;
 357         for (i = 0; i < MAX_FW_IMAGES; i++) {
 358                 release_firmware(wl->fw.fw_bin[i]);
 359                 release_firmware(wl->fw.fw_hdr[i]);
 360         }
 361 }
 362
 363 /*
 364  * Precondition: Since this function is called in brcms_pci_probe() context,
 365  * no locking is required.
 366  */
 367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 368 {
 369         int status;
 370         struct device *device = &pdev->dev;
 371         char fw_name[100];
 372         int i;
 373
 374         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 375         for (i = 0; i < MAX_FW_IMAGES; i++) {
 376                 if (brcms_firmwares[i] == NULL)
 377                         break;
 378                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 379                         UCODE_LOADER_API_VER);
 380                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 381                 if (status) {
 382                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 383                                   KBUILD_MODNAME, fw_name);
 384                         return status;
 385                 }
 386                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 387                         UCODE_LOADER_API_VER);
 388                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 389                 if (status) {
 390                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 391                                   KBUILD_MODNAME, fw_name);
 392                         return status;
 393                 }
 394                 wl->fw.hdr_num_entries[i] =
 395                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 396         }
 397         wl->fw.fw_cnt = i;
 398         status = brcms_ucode_data_init(wl, &wl->ucode);
 399         brcms_release_fw(wl);
 400         return status;
 401 }
 402
 403 static void brcms_ops_tx(struct ieee80211_hw *hw,
 404                          struct ieee80211_tx_control *control,
 405                          struct sk_buff *skb)
 406 {
 407         struct brcms_info *wl = hw->priv;
 408         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 409
 410         spin_lock_bh(&wl->lock);
 411         if (!wl->pub->up) {
 412                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 413                 kfree_skb(skb);
 414                 goto done;
 415         }
 416         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 417                 tx_info->rate_driver_data[0] = control->sta;
 418  done:
 419         spin_unlock_bh(&wl->lock);
 420 }
 421
 422 static int brcms_ops_start(struct ieee80211_hw *hw)
 423 {
 424         struct brcms_info *wl = hw->priv;
 425         bool blocked;
 426         int err;
 427
 428         if (!wl->ucode.bcm43xx_bomminor) {
 429                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 430                 if (err)
 431                         return -ENOENT;
 432         }
 433
 434         ieee80211_wake_queues(hw);
 435         spin_lock_bh(&wl->lock);
 436         blocked = brcms_rfkill_set_hw_state(wl);
 437         spin_unlock_bh(&wl->lock);
 438         if (!blocked)
 439                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 440
 441         spin_lock_bh(&wl->lock);
 442         /* avoid acknowledging frames before a non-monitor device is added */
 443         wl->mute_tx = true;
 444
 445         if (!wl->pub->up)
 446                 if (!blocked)
 447                         err = brcms_up(wl);
 448                 else
 449                         err = -ERFKILL;
 450         else
 451                 err = -ENODEV;
 452         spin_unlock_bh(&wl->lock);
 453
 454         if (err != 0)
 455                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 456                           __func__, err);
 457
 458         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 459         return err;
 460 }
 461
 462 static void brcms_ops_stop(struct ieee80211_hw *hw)
 463 {
 464         struct brcms_info *wl = hw->priv;
 465         int status;
 466
 467         ieee80211_stop_queues(hw);
 468
 469         if (wl->wlc == NULL)
 470                 return;
 471
 472         spin_lock_bh(&wl->lock);
 473         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 474         spin_unlock_bh(&wl->lock);
 475         if (!status) {
 476                 brcms_err(wl->wlc->hw->d11core,
 477                           "wl: brcms_ops_stop: chipmatch failed\n");
 478                 return;
 479         }
 480
 481         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 482
 483         /* put driver in down state */
 484         spin_lock_bh(&wl->lock);
 485         brcms_down(wl);
 486         spin_unlock_bh(&wl->lock);
 487 }
 488
 489 static int
 490 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 491 {
 492         struct brcms_info *wl = hw->priv;
 493
 494         /* Just STA, AP and ADHOC for now */
 495         if (vif->type != NL80211_IFTYPE_STATION &&
 496             vif->type != NL80211_IFTYPE_AP &&
 497             vif->type != NL80211_IFTYPE_ADHOC) {
 498                 brcms_err(wl->wlc->hw->d11core,
 499                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 500                           __func__, vif->type);
 501                 return -EOPNOTSUPP;
 502         }
 503
 504         spin_lock_bh(&wl->lock);
 505         wl->mute_tx = false;
 506         brcms_c_mute(wl->wlc, false);
 507         if (vif->type == NL80211_IFTYPE_STATION)
 508                 brcms_c_start_station(wl->wlc, vif->addr);
 509         else if (vif->type == NL80211_IFTYPE_AP)
 510                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 511                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 512         else if (vif->type == NL80211_IFTYPE_ADHOC)
 513                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 514         spin_unlock_bh(&wl->lock);
 515
 516         return 0;
 517 }
 518
 519 static void
 520 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 521 {
 522 }
 523
 524 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 525 {
 526         struct ieee80211_conf *conf = &hw->conf;
 527         struct brcms_info *wl = hw->priv;
 528         struct bcma_device *core = wl->wlc->hw->d11core;
 529         int err = 0;
 530         int new_int;
 531
 532         spin_lock_bh(&wl->lock);
 533         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 534                 brcms_c_set_beacon_listen_interval(wl->wlc,
 535                                                    conf->listen_interval);
 536         }
 537         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 538                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 539                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 540                                "true" : "false");
 541         if (changed & IEEE80211_CONF_CHANGE_PS)
 542                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 543                           __func__, conf->flags & IEEE80211_CONF_PS ?
 544                           "true" : "false");
 545
 546         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 547                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 548                 if (err < 0) {
 549                         brcms_err(core, "%s: Error setting power_level\n",
 550                                   __func__);
 551                         goto config_out;
 552                 }
 553                 new_int = brcms_c_get_tx_power(wl->wlc);
 554                 if (new_int != conf->power_level)
 555                         brcms_err(core,
 556                                   "%s: Power level req != actual, %d %d\n",
 557                                   __func__, conf->power_level,
 558                                   new_int);
 559         }
 560         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 561                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 562                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 563                         err = brcms_c_set_channel(wl->wlc,
 564                                                   conf->chandef.chan->hw_value);
 565                 else
 566                         err = -ENOTSUPP;
 567         }
 568         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 569                 err = brcms_c_set_rate_limit(wl->wlc,
 570                                              conf->short_frame_max_tx_count,
 571                                              conf->long_frame_max_tx_count);
 572
 573  config_out:
 574         spin_unlock_bh(&wl->lock);
 575         return err;
 576 }
 577
 578 static void
 579 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 580                         struct ieee80211_vif *vif,
 581                         struct ieee80211_bss_conf *info, u32 changed)
 582 {
 583         struct brcms_info *wl = hw->priv;
 584         struct bcma_device *core = wl->wlc->hw->d11core;
 585
 586         if (changed & BSS_CHANGED_ASSOC) {
 587                 /* association status changed (associated/disassociated)
 588                  * also implies a change in the AID.
 589                  */
 590                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 591                           __func__, info->assoc ? "" : "dis");
 592                 spin_lock_bh(&wl->lock);
 593                 brcms_c_associate_upd(wl->wlc, info->assoc);
 594                 spin_unlock_bh(&wl->lock);
 595         }
 596         if (changed & BSS_CHANGED_ERP_SLOT) {
 597                 s8 val;
 598
 599                 /* slot timing changed */
 600                 if (info->use_short_slot)
 601                         val = 1;
 602                 else
 603                         val = 0;
 604                 spin_lock_bh(&wl->lock);
 605                 brcms_c_set_shortslot_override(wl->wlc, val);
 606                 spin_unlock_bh(&wl->lock);
 607         }
 608
 609         if (changed & BSS_CHANGED_HT) {
 610                 /* 802.11n parameters changed */
 611                 u16 mode = info->ht_operation_mode;
 612
 613                 spin_lock_bh(&wl->lock);
 614                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 615                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 616                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 617                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 618                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 619                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 620                 spin_unlock_bh(&wl->lock);
 621         }
 622         if (changed & BSS_CHANGED_BASIC_RATES) {
 623                 struct ieee80211_supported_band *bi;
 624                 u32 br_mask, i;
 625                 u16 rate;
 626                 struct brcm_rateset rs;
 627                 int error;
 628
 629                 /* retrieve the current rates */
 630                 spin_lock_bh(&wl->lock);
 631                 brcms_c_get_current_rateset(wl->wlc, &rs);
 632                 spin_unlock_bh(&wl->lock);
 633
 634                 br_mask = info->basic_rates;
 635                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 636                 for (i = 0; i < bi->n_bitrates; i++) {
 637                         /* convert to internal rate value */
 638                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 639
 640                         /* set/clear basic rate flag */
 641                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 642                         br_mask >>= 1;
 643                 }
 644
 645                 /* update the rate set */
 646                 spin_lock_bh(&wl->lock);
 647                 error = brcms_c_set_rateset(wl->wlc, &rs);
 648                 spin_unlock_bh(&wl->lock);
 649                 if (error)
 650                         brcms_err(core, "changing basic rates failed: %d\n",
 651                                   error);
 652         }
 653         if (changed & BSS_CHANGED_BEACON_INT) {
 654                 /* Beacon interval changed */
 655                 spin_lock_bh(&wl->lock);
 656                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 657                 spin_unlock_bh(&wl->lock);
 658         }
 659         if (changed & BSS_CHANGED_BSSID) {
 660                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 661                 spin_lock_bh(&wl->lock);
 662                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 663                 spin_unlock_bh(&wl->lock);
 664         }
 665         if (changed & BSS_CHANGED_SSID) {
 666                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 667                 spin_lock_bh(&wl->lock);
 668                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 669                 spin_unlock_bh(&wl->lock);
 670         }
 671         if (changed & BSS_CHANGED_BEACON) {
 672                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 673                 struct sk_buff *beacon;
 674                 u16 tim_offset = 0;
 675
 676                 spin_lock_bh(&wl->lock);
 677                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 678                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 679                                        info->dtim_period);
 680                 spin_unlock_bh(&wl->lock);
 681         }
 682
 683         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 684                 struct sk_buff *probe_resp;
 685
 686                 spin_lock_bh(&wl->lock);
 687                 probe_resp = ieee80211_proberesp_get(hw, vif);
 688                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 689                 spin_unlock_bh(&wl->lock);
 690         }
 691
 692         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 693                 /* Beaconing should be enabled/disabled (beaconing modes) */
 694                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 695                           info->enable_beacon ? "true" : "false");
 696                 if (info->enable_beacon &&
 697                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 698                         brcms_c_enable_probe_resp(wl->wlc, true);
 699                 } else {
 700                         brcms_c_enable_probe_resp(wl->wlc, false);
 701                 }
 702         }
 703
 704         if (changed & BSS_CHANGED_CQM) {
 705                 /* Connection quality monitor config changed */
 706                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 707                           " (implement)\n", __func__, info->cqm_rssi_thold,
 708                           info->cqm_rssi_hyst);
 709         }
 710
 711         if (changed & BSS_CHANGED_IBSS) {
 712                 /* IBSS join status changed */
 713                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 714                           __func__, info->ibss_joined ? "true" : "false");
 715         }
 716
 717         if (changed & BSS_CHANGED_ARP_FILTER) {
 718                 /* Hardware ARP filter address list or state changed */
 719                 brcms_err(core, "%s: arp filtering: %d addresses"
 720                           " (implement)\n", __func__, info->arp_addr_cnt);
 721         }
 722
 723         if (changed & BSS_CHANGED_QOS) {
 724                 /*
 725                  * QoS for this association was enabled/disabled.
 726                  * Note that it is only ever disabled for station mode.
 727                  */
 728                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 729                           __func__, info->qos ? "true" : "false");
 730         }
 731         return;
 732 }
 733
 734 static void
 735 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 736                         unsigned int changed_flags,
 737                         unsigned int *total_flags, u64 multicast)
 738 {
 739         struct brcms_info *wl = hw->priv;
 740         struct bcma_device *core = wl->wlc->hw->d11core;
 741
 742         changed_flags &= MAC_FILTERS;
 743         *total_flags &= MAC_FILTERS;
 744
 745         if (changed_flags & FIF_ALLMULTI)
 746                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 747         if (changed_flags & FIF_FCSFAIL)
 748                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 749         if (changed_flags & FIF_CONTROL)
 750                 brcms_dbg_info(core, "FIF_CONTROL\n");
 751         if (changed_flags & FIF_OTHER_BSS)
 752                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 753         if (changed_flags & FIF_PSPOLL)
 754                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 755         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 756                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 757
 758         spin_lock_bh(&wl->lock);
 759         brcms_c_mac_promisc(wl->wlc, *total_flags);
 760         spin_unlock_bh(&wl->lock);
 761         return;
 762 }
 763
 764 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 765                                     struct ieee80211_vif *vif,
 766                                     const u8 *mac_addr)
 767 {
 768         struct brcms_info *wl = hw->priv;
 769         spin_lock_bh(&wl->lock);
 770         brcms_c_scan_start(wl->wlc);
 771         spin_unlock_bh(&wl->lock);
 772         return;
 773 }
 774
 775 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 776                                        struct ieee80211_vif *vif)
 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                     struct ieee80211_ampdu_params *params)
 822 {
 823         struct brcms_info *wl = hw->priv;
 824         struct scb *scb = &wl->wlc->pri_scb;
 825         int status;
 826         struct ieee80211_sta *sta = params->sta;
 827         enum ieee80211_ampdu_mlme_action action = params->action;
 828         u16 tid = params->tid;
 829         u8 buf_size = params->buf_size;
 830
 831         if (WARN_ON(scb->magic != SCB_MAGIC))
 832                 return -EIDRM;
 833         switch (action) {
 834         case IEEE80211_AMPDU_RX_START:
 835                 break;
 836         case IEEE80211_AMPDU_RX_STOP:
 837                 break;
 838         case IEEE80211_AMPDU_TX_START:
 839                 spin_lock_bh(&wl->lock);
 840                 status = brcms_c_aggregatable(wl->wlc, tid);
 841                 spin_unlock_bh(&wl->lock);
 842                 if (!status) {
 843                         brcms_err(wl->wlc->hw->d11core,
 844                                   "START: tid %d is not agg\'able\n", tid);
 845                         return -EINVAL;
 846                 }
 847                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 848                 break;
 849
 850         case IEEE80211_AMPDU_TX_STOP_CONT:
 851         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 852         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 853                 spin_lock_bh(&wl->lock);
 854                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 855                 spin_unlock_bh(&wl->lock);
 856                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 857                 break;
 858         case IEEE80211_AMPDU_TX_OPERATIONAL:
 859                 /*
 860                  * BA window size from ADDBA response ('buf_size') defines how
 861                  * many outstanding MPDUs are allowed for the BA stream by
 862                  * recipient and traffic class. 'ampdu_factor' gives maximum
 863                  * AMPDU size.
 864                  */
 865                 spin_lock_bh(&wl->lock);
 866                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 867                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 868                          sta->ht_cap.ampdu_factor)) - 1);
 869                 spin_unlock_bh(&wl->lock);
 870                 /* Power save wakeup */
 871                 break;
 872         default:
 873                 brcms_err(wl->wlc->hw->d11core,
 874                           "%s: Invalid command, ignoring\n", __func__);
 875         }
 876
 877         return 0;
 878 }
 879
 880 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 881 {
 882         struct brcms_info *wl = hw->priv;
 883         bool blocked;
 884
 885         spin_lock_bh(&wl->lock);
 886         blocked = brcms_c_check_radio_disabled(wl->wlc);
 887         spin_unlock_bh(&wl->lock);
 888
 889         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 890 }
 891
 892 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 893 {
 894         bool result;
 895
 896         spin_lock_bh(&wl->lock);
 897         result = brcms_c_tx_flush_completed(wl->wlc);
 898         spin_unlock_bh(&wl->lock);
 899         return result;
 900 }
 901
 902 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 903                             u32 queues, bool drop)
 904 {
 905         struct brcms_info *wl = hw->priv;
 906         int ret;
 907
 908         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 909
 910         ret = wait_event_timeout(wl->tx_flush_wq,
 911                                  brcms_tx_flush_completed(wl),
 912                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 913
 914         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 915                            "ret=%d\n", jiffies_to_msecs(ret));
 916 }
 917
 918 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 919 {
 920         struct brcms_info *wl = hw->priv;
 921         u64 tsf;
 922
 923         spin_lock_bh(&wl->lock);
 924         tsf = brcms_c_tsf_get(wl->wlc);
 925         spin_unlock_bh(&wl->lock);
 926
 927         return tsf;
 928 }
 929
 930 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 931                            struct ieee80211_vif *vif, u64 tsf)
 932 {
 933         struct brcms_info *wl = hw->priv;
 934
 935         spin_lock_bh(&wl->lock);
 936         brcms_c_tsf_set(wl->wlc, tsf);
 937         spin_unlock_bh(&wl->lock);
 938 }
 939
 940 static const struct ieee80211_ops brcms_ops = {
 941         .tx = brcms_ops_tx,
 942         .start = brcms_ops_start,
 943         .stop = brcms_ops_stop,
 944         .add_interface = brcms_ops_add_interface,
 945         .remove_interface = brcms_ops_remove_interface,
 946         .config = brcms_ops_config,
 947         .bss_info_changed = brcms_ops_bss_info_changed,
 948         .configure_filter = brcms_ops_configure_filter,
 949         .sw_scan_start = brcms_ops_sw_scan_start,
 950         .sw_scan_complete = brcms_ops_sw_scan_complete,
 951         .conf_tx = brcms_ops_conf_tx,
 952         .sta_add = brcms_ops_sta_add,
 953         .ampdu_action = brcms_ops_ampdu_action,
 954         .rfkill_poll = brcms_ops_rfkill_poll,
 955         .flush = brcms_ops_flush,
 956         .get_tsf = brcms_ops_get_tsf,
 957         .set_tsf = brcms_ops_set_tsf,
 958 };
 959
 960 void brcms_dpc(unsigned long data)
 961 {
 962         struct brcms_info *wl;
 963
 964         wl = (struct brcms_info *) data;
 965
 966         spin_lock_bh(&wl->lock);
 967
 968         /* call the common second level interrupt handler */
 969         if (wl->pub->up) {
 970                 if (wl->resched) {
 971                         unsigned long flags;
 972
 973                         spin_lock_irqsave(&wl->isr_lock, flags);
 974                         brcms_c_intrsupd(wl->wlc);
 975                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 976                 }
 977
 978                 wl->resched = brcms_c_dpc(wl->wlc, true);
 979         }
 980
 981         /* brcms_c_dpc() may bring the driver down */
 982         if (!wl->pub->up)
 983                 goto done;
 984
 985         /* re-schedule dpc */
 986         if (wl->resched)
 987                 tasklet_schedule(&wl->tasklet);
 988         else
 989                 /* re-enable interrupts */
 990                 brcms_intrson(wl);
 991
 992  done:
 993         spin_unlock_bh(&wl->lock);
 994         wake_up(&wl->tx_flush_wq);
 995 }
 996
 997 static irqreturn_t brcms_isr(int irq, void *dev_id)
 998 {
 999         struct brcms_info *wl;
1000         irqreturn_t ret = IRQ_NONE;
1001
1002         wl = (struct brcms_info *) dev_id;
1003
1004         spin_lock(&wl->isr_lock);
1005
1006         /* call common first level interrupt handler */
1007         if (brcms_c_isr(wl->wlc)) {
1008                 /* schedule second level handler */
1009                 tasklet_schedule(&wl->tasklet);
1010                 ret = IRQ_HANDLED;
1011         }
1012
1013         spin_unlock(&wl->isr_lock);
1014
1015         return ret;
1016 }
1017
1018 /*
1019  * is called in brcms_pci_probe() context, therefore no locking required.
1020  */
1021 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1022 {
1023         struct brcms_info *wl = hw->priv;
1024         struct brcms_c_info *wlc = wl->wlc;
1025         struct ieee80211_supported_band *band;
1026         int has_5g = 0;
1027         u16 phy_type;
1028
1029         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1030         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1031
1032         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1033         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1034                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1035                 *band = brcms_band_2GHz_nphy_template;
1036                 if (phy_type == PHY_TYPE_LCN) {
1037                         /* Single stream */
1038                         band->ht_cap.mcs.rx_mask[1] = 0;
1039                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1040                 }
1041                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1042         } else {
1043                 return -EPERM;
1044         }
1045
1046         /* Assume all bands use the same phy.  True for 11n devices. */
1047         if (wl->pub->_nbands > 1) {
1048                 has_5g++;
1049                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1050                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1051                         *band = brcms_band_5GHz_nphy_template;
1052                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1053                 } else {
1054                         return -EPERM;
1055                 }
1056         }
1057         return 0;
1058 }
1059
1060 /*
1061  * is called in brcms_pci_probe() context, therefore no locking required.
1062  */
1063 static int ieee_hw_init(struct ieee80211_hw *hw)
1064 {
1065         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1066         ieee80211_hw_set(hw, SIGNAL_DBM);
1067         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1068
1069         hw->extra_tx_headroom = brcms_c_get_header_len();
1070         hw->queues = N_TX_QUEUES;
1071         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1072
1073         /* channel change time is dependent on chip and band  */
1074         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1075                                      BIT(NL80211_IFTYPE_AP) |
1076                                      BIT(NL80211_IFTYPE_ADHOC);
1077
1078         /*
1079          * deactivate sending probe responses by ucude, because this will
1080          * cause problems when WPS is used.
1081          *
1082          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1083          */
1084
1085         hw->rate_control_algorithm = "minstrel_ht";
1086
1087         hw->sta_data_size = 0;
1088         return ieee_hw_rate_init(hw);
1089 }
1090
1091 /**
1092  * attach to the WL device.
1093  *
1094  * Attach to the WL device identified by vendor and device parameters.
1095  * regs is a host accessible memory address pointing to WL device registers.
1096  *
1097  * is called in brcms_bcma_probe() context, therefore no locking required.
1098  */
1099 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1100 {
1101         struct brcms_info *wl = NULL;
1102         int unit, err;
1103         struct ieee80211_hw *hw;
1104         u8 perm[ETH_ALEN];
1105
1106         unit = n_adapters_found;
1107         err = 0;
1108
1109         if (unit < 0)
1110                 return NULL;
1111
1112         /* allocate private info */
1113         hw = bcma_get_drvdata(pdev);
1114         if (hw != NULL)
1115                 wl = hw->priv;
1116         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1117                 return NULL;
1118         wl->wiphy = hw->wiphy;
1119
1120         atomic_set(&wl->callbacks, 0);
1121
1122         init_waitqueue_head(&wl->tx_flush_wq);
1123
1124         /* setup the bottom half handler */
1125         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1126
1127         spin_lock_init(&wl->lock);
1128         spin_lock_init(&wl->isr_lock);
1129
1130         /* common load-time initialization */
1131         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1132         if (!wl->wlc) {
1133                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1134                           KBUILD_MODNAME, err);
1135                 goto fail;
1136         }
1137         wl->pub = brcms_c_pub(wl->wlc);
1138
1139         wl->pub->ieee_hw = hw;
1140
1141         /* register our interrupt handler */
1142         if (request_irq(pdev->irq, brcms_isr,
1143                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1144                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1145                 goto fail;
1146         }
1147         wl->irq = pdev->irq;
1148
1149         /* register module */
1150         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1151
1152         if (ieee_hw_init(hw)) {
1153                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1154                           __func__);
1155                 goto fail;
1156         }
1157
1158         brcms_c_regd_init(wl->wlc);
1159
1160         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1161         if (WARN_ON(!is_valid_ether_addr(perm)))
1162                 goto fail;
1163         SET_IEEE80211_PERM_ADDR(hw, perm);
1164
1165         err = ieee80211_register_hw(hw);
1166         if (err)
1167                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1168                           "%d\n", __func__, err);
1169
1170         if (wl->pub->srom_ccode[0] &&
1171             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1172                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1173
1174         brcms_debugfs_attach(wl->pub);
1175         brcms_debugfs_create_files(wl->pub);
1176         n_adapters_found++;
1177         return wl;
1178
1179 fail:
1180         brcms_free(wl);
1181         return NULL;
1182 }
1183
1184
1185
1186 /**
1187  * determines if a device is a WL device, and if so, attaches it.
1188  *
1189  * This function determines if a device pointed to by pdev is a WL device,
1190  * and if so, performs a brcms_attach() on it.
1191  *
1192  * Perimeter lock is initialized in the course of this function.
1193  */
1194 static int brcms_bcma_probe(struct bcma_device *pdev)
1195 {
1196         struct brcms_info *wl;
1197         struct ieee80211_hw *hw;
1198
1199         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1200                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1201                  pdev->irq);
1202
1203         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1204             (pdev->id.id != BCMA_CORE_80211))
1205                 return -ENODEV;
1206
1207         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1208         if (!hw) {
1209                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1210                 return -ENOMEM;
1211         }
1212
1213         SET_IEEE80211_DEV(hw, &pdev->dev);
1214
1215         bcma_set_drvdata(pdev, hw);
1216
1217         memset(hw->priv, 0, sizeof(*wl));
1218
1219         wl = brcms_attach(pdev);
1220         if (!wl) {
1221                 pr_err("%s: brcms_attach failed!\n", __func__);
1222                 return -ENODEV;
1223         }
1224         brcms_led_register(wl);
1225
1226         return 0;
1227 }
1228
1229 static int brcms_suspend(struct bcma_device *pdev)
1230 {
1231         struct brcms_info *wl;
1232         struct ieee80211_hw *hw;
1233
1234         hw = bcma_get_drvdata(pdev);
1235         wl = hw->priv;
1236         if (!wl) {
1237                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1238                        __func__);
1239                 return -ENODEV;
1240         }
1241
1242         /* only need to flag hw is down for proper resume */
1243         spin_lock_bh(&wl->lock);
1244         wl->pub->hw_up = false;
1245         spin_unlock_bh(&wl->lock);
1246
1247         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1248
1249         return 0;
1250 }
1251
1252 static int brcms_resume(struct bcma_device *pdev)
1253 {
1254         return 0;
1255 }
1256
1257 static struct bcma_driver brcms_bcma_driver = {
1258         .name     = KBUILD_MODNAME,
1259         .probe    = brcms_bcma_probe,
1260         .suspend  = brcms_suspend,
1261         .resume   = brcms_resume,
1262         .remove   = brcms_remove,
1263         .id_table = brcms_coreid_table,
1264 };
1265
1266 /**
1267  * This is the main entry point for the brcmsmac driver.
1268  *
1269  * This function is scheduled upon module initialization and
1270  * does the driver registration, which result in brcms_bcma_probe()
1271  * call resulting in the driver bringup.
1272  */
1273 static void brcms_driver_init(struct work_struct *work)
1274 {
1275         int error;
1276
1277         error = bcma_driver_register(&brcms_bcma_driver);
1278         if (error)
1279                 pr_err("%s: register returned %d\n", __func__, error);
1280 }
1281
1282 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1283
1284 static int __init brcms_module_init(void)
1285 {
1286         brcms_debugfs_init();
1287         if (!schedule_work(&brcms_driver_work))
1288                 return -EBUSY;
1289
1290         return 0;
1291 }
1292
1293 /**
1294  * This function unloads the brcmsmac driver from the system.
1295  *
1296  * This function unconditionally unloads the brcmsmac driver module from the
1297  * system.
1298  *
1299  */
1300 static void __exit brcms_module_exit(void)
1301 {
1302         cancel_work_sync(&brcms_driver_work);
1303         bcma_driver_unregister(&brcms_bcma_driver);
1304         brcms_debugfs_exit();
1305 }
1306
1307 module_init(brcms_module_init);
1308 module_exit(brcms_module_exit);
1309
1310 /*
1311  * precondition: perimeter lock has been acquired
1312  */
1313 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1314                          bool state, int prio)
1315 {
1316         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1317 }
1318
1319 /*
1320  * precondition: perimeter lock has been acquired
1321  */
1322 void brcms_init(struct brcms_info *wl)
1323 {
1324         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1325                        wl->pub->unit);
1326         brcms_reset(wl);
1327         brcms_c_init(wl->wlc, wl->mute_tx);
1328 }
1329
1330 /*
1331  * precondition: perimeter lock has been acquired
1332  */
1333 uint brcms_reset(struct brcms_info *wl)
1334 {
1335         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1336         brcms_c_reset(wl->wlc);
1337
1338         /* dpc will not be rescheduled */
1339         wl->resched = false;
1340
1341         /* inform publicly that interface is down */
1342         wl->pub->up = false;
1343
1344         return 0;
1345 }
1346
1347 void brcms_fatal_error(struct brcms_info *wl)
1348 {
1349         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1350                   wl->wlc->pub->unit);
1351         brcms_reset(wl);
1352         ieee80211_restart_hw(wl->pub->ieee_hw);
1353 }
1354
1355 /*
1356  * These are interrupt on/off entry points. Disable interrupts
1357  * during interrupt state transition.
1358  */
1359 void brcms_intrson(struct brcms_info *wl)
1360 {
1361         unsigned long flags;
1362
1363         spin_lock_irqsave(&wl->isr_lock, flags);
1364         brcms_c_intrson(wl->wlc);
1365         spin_unlock_irqrestore(&wl->isr_lock, flags);
1366 }
1367
1368 u32 brcms_intrsoff(struct brcms_info *wl)
1369 {
1370         unsigned long flags;
1371         u32 status;
1372
1373         spin_lock_irqsave(&wl->isr_lock, flags);
1374         status = brcms_c_intrsoff(wl->wlc);
1375         spin_unlock_irqrestore(&wl->isr_lock, flags);
1376         return status;
1377 }
1378
1379 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1380 {
1381         unsigned long flags;
1382
1383         spin_lock_irqsave(&wl->isr_lock, flags);
1384         brcms_c_intrsrestore(wl->wlc, macintmask);
1385         spin_unlock_irqrestore(&wl->isr_lock, flags);
1386 }
1387
1388 /*
1389  * precondition: perimeter lock has been acquired
1390  */
1391 int brcms_up(struct brcms_info *wl)
1392 {
1393         int error = 0;
1394
1395         if (wl->pub->up)
1396                 return 0;
1397
1398         error = brcms_c_up(wl->wlc);
1399
1400         return error;
1401 }
1402
1403 /*
1404  * precondition: perimeter lock has been acquired
1405  */
1406 void brcms_down(struct brcms_info *wl)
1407 {
1408         uint callbacks, ret_val = 0;
1409
1410         /* call common down function */
1411         ret_val = brcms_c_down(wl->wlc);
1412         callbacks = atomic_read(&wl->callbacks) - ret_val;
1413
1414         /* wait for down callbacks to complete */
1415         spin_unlock_bh(&wl->lock);
1416
1417         /* For HIGH_only driver, it's important to actually schedule other work,
1418          * not just spin wait since everything runs at schedule level
1419          */
1420         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1421
1422         spin_lock_bh(&wl->lock);
1423 }
1424
1425 /*
1426 * precondition: perimeter lock is not acquired
1427  */
1428 static void _brcms_timer(struct work_struct *work)
1429 {
1430         struct brcms_timer *t = container_of(work, struct brcms_timer,
1431                                              dly_wrk.work);
1432
1433         spin_lock_bh(&t->wl->lock);
1434
1435         if (t->set) {
1436                 if (t->periodic) {
1437                         atomic_inc(&t->wl->callbacks);
1438                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1439                                                      &t->dly_wrk,
1440                                                      msecs_to_jiffies(t->ms));
1441                 } else {
1442                         t->set = false;
1443                 }
1444
1445                 t->fn(t->arg);
1446         }
1447
1448         atomic_dec(&t->wl->callbacks);
1449
1450         spin_unlock_bh(&t->wl->lock);
1451 }
1452
1453 /*
1454  * Adds a timer to the list. Caller supplies a timer function.
1455  * Is called from wlc.
1456  *
1457  * precondition: perimeter lock has been acquired
1458  */
1459 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1460                                      void (*fn) (void *arg),
1461                                      void *arg, const char *name)
1462 {
1463         struct brcms_timer *t;
1464
1465         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1466         if (!t)
1467                 return NULL;
1468
1469         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1470         t->wl = wl;
1471         t->fn = fn;
1472         t->arg = arg;
1473         t->next = wl->timers;
1474         wl->timers = t;
1475
1476 #ifdef DEBUG
1477         t->name = kstrdup(name, GFP_ATOMIC);
1478 #endif
1479
1480         return t;
1481 }
1482
1483 /*
1484  * adds only the kernel timer since it's going to be more accurate
1485  * as well as it's easier to make it periodic
1486  *
1487  * precondition: perimeter lock has been acquired
1488  */
1489 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1490 {
1491         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1492
1493 #ifdef DEBUG
1494         if (t->set)
1495                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1496                                "%s: Already set. Name: %s, per %d\n",
1497                                __func__, t->name, periodic);
1498 #endif
1499         t->ms = ms;
1500         t->periodic = (bool) periodic;
1501         if (!t->set) {
1502                 t->set = true;
1503                 atomic_inc(&t->wl->callbacks);
1504         }
1505
1506         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1507 }
1508
1509 /*
1510  * return true if timer successfully deleted, false if still pending
1511  *
1512  * precondition: perimeter lock has been acquired
1513  */
1514 bool brcms_del_timer(struct brcms_timer *t)
1515 {
1516         if (t->set) {
1517                 t->set = false;
1518                 if (!cancel_delayed_work(&t->dly_wrk))
1519                         return false;
1520
1521                 atomic_dec(&t->wl->callbacks);
1522         }
1523
1524         return true;
1525 }
1526
1527 /*
1528  * precondition: perimeter lock has been acquired
1529  */
1530 void brcms_free_timer(struct brcms_timer *t)
1531 {
1532         struct brcms_info *wl = t->wl;
1533         struct brcms_timer *tmp;
1534
1535         /* delete the timer in case it is active */
1536         brcms_del_timer(t);
1537
1538         if (wl->timers == t) {
1539                 wl->timers = wl->timers->next;
1540 #ifdef DEBUG
1541                 kfree(t->name);
1542 #endif
1543                 kfree(t);
1544                 return;
1545
1546         }
1547
1548         tmp = wl->timers;
1549         while (tmp) {
1550                 if (tmp->next == t) {
1551                         tmp->next = t->next;
1552 #ifdef DEBUG
1553                         kfree(t->name);
1554 #endif
1555                         kfree(t);
1556                         return;
1557                 }
1558                 tmp = tmp->next;
1559         }
1560
1561 }
1562
1563 /*
1564  * precondition: perimeter lock has been acquired
1565  */
1566 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1567 {
1568         int i, entry;
1569         const u8 *pdata;
1570         struct firmware_hdr *hdr;
1571         for (i = 0; i < wl->fw.fw_cnt; i++) {
1572                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1573                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1574                      entry++, hdr++) {
1575                         u32 len = le32_to_cpu(hdr->len);
1576                         if (le32_to_cpu(hdr->idx) == idx) {
1577                                 pdata = wl->fw.fw_bin[i]->data +
1578                                         le32_to_cpu(hdr->offset);
1579                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1580                                 if (*pbuf == NULL)
1581                                         goto fail;
1582
1583                                 return 0;
1584                         }
1585                 }
1586         }
1587         brcms_err(wl->wlc->hw->d11core,
1588                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1589         *pbuf = NULL;
1590 fail:
1591         return -ENODATA;
1592 }
1593
1594 /*
1595  * Precondition: Since this function is called in brcms_bcma_probe() context,
1596  * no locking is required.
1597  */
1598 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, 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                         if (le32_to_cpu(hdr->idx) == idx) {
1608                                 pdata = wl->fw.fw_bin[i]->data +
1609                                         le32_to_cpu(hdr->offset);
1610                                 if (le32_to_cpu(hdr->len) != 4) {
1611                                         brcms_err(wl->wlc->hw->d11core,
1612                                                   "ERROR: fw hdr len\n");
1613                                         return -ENOMSG;
1614                                 }
1615                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1616                                 return 0;
1617                         }
1618                 }
1619         }
1620         brcms_err(wl->wlc->hw->d11core,
1621                   "ERROR: ucode tag:%d can not be found!\n", idx);
1622         return -ENOMSG;
1623 }
1624
1625 /*
1626  * precondition: can both be called locked and unlocked
1627  */
1628 void brcms_ucode_free_buf(void *p)
1629 {
1630         kfree(p);
1631 }
1632
1633 /*
1634  * checks validity of all firmware images loaded from user space
1635  *
1636  * Precondition: Since this function is called in brcms_bcma_probe() context,
1637  * no locking is required.
1638  */
1639 int brcms_check_firmwares(struct brcms_info *wl)
1640 {
1641         int i;
1642         int entry;
1643         int rc = 0;
1644         const struct firmware *fw;
1645         const struct firmware *fw_hdr;
1646         struct firmware_hdr *ucode_hdr;
1647         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1648                 fw =  wl->fw.fw_bin[i];
1649                 fw_hdr = wl->fw.fw_hdr[i];
1650                 if (fw == NULL && fw_hdr == NULL) {
1651                         break;
1652                 } else if (fw == NULL || fw_hdr == NULL) {
1653                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1654                                   __func__);
1655                         rc = -EBADF;
1656                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1657                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1658                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1659                                 sizeof(struct firmware_hdr));
1660                         rc = -EBADF;
1661                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1662                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1663                                   __func__, fw->size);
1664                         rc = -EBADF;
1665                 } else {
1666                         /* check if ucode section overruns firmware image */
1667                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1668                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1669                              !rc; entry++, ucode_hdr++) {
1670                                 if (le32_to_cpu(ucode_hdr->offset) +
1671                                     le32_to_cpu(ucode_hdr->len) >
1672                                     fw->size) {
1673                                         wiphy_err(wl->wiphy,
1674                                                   "%s: conflicting bin/hdr\n",
1675                                                   __func__);
1676                                         rc = -EBADF;
1677                                 }
1678                         }
1679                 }
1680         }
1681         if (rc == 0 && wl->fw.fw_cnt != i) {
1682                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1683                         wl->fw.fw_cnt);
1684                 rc = -EBADF;
1685         }
1686         return rc;
1687 }
1688
1689 /*
1690  * precondition: perimeter lock has been acquired
1691  */
1692 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1693 {
1694         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1695
1696         spin_unlock_bh(&wl->lock);
1697         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1698         if (blocked)
1699                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1700         spin_lock_bh(&wl->lock);
1701         return blocked;
1702 }