kernel/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         {},
 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                                     struct ieee80211_vif *vif,
 769                                     const u8 *mac_addr)
 770 {
 771         struct brcms_info *wl = hw->priv;
 772         spin_lock_bh(&wl->lock);
 773         brcms_c_scan_start(wl->wlc);
 774         spin_unlock_bh(&wl->lock);
 775         return;
 776 }
 777
 778 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 779                                        struct ieee80211_vif *vif)
 780 {
 781         struct brcms_info *wl = hw->priv;
 782         spin_lock_bh(&wl->lock);
 783         brcms_c_scan_stop(wl->wlc);
 784         spin_unlock_bh(&wl->lock);
 785         return;
 786 }
 787
 788 static int
 789 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 790                   const struct ieee80211_tx_queue_params *params)
 791 {
 792         struct brcms_info *wl = hw->priv;
 793
 794         spin_lock_bh(&wl->lock);
 795         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 796         spin_unlock_bh(&wl->lock);
 797
 798         return 0;
 799 }
 800
 801 static int
 802 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 803                struct ieee80211_sta *sta)
 804 {
 805         struct brcms_info *wl = hw->priv;
 806         struct scb *scb = &wl->wlc->pri_scb;
 807
 808         brcms_c_init_scb(scb);
 809
 810         wl->pub->global_ampdu = &(scb->scb_ampdu);
 811         wl->pub->global_ampdu->scb = scb;
 812         wl->pub->global_ampdu->max_pdu = 16;
 813
 814         /*
 815          * minstrel_ht initiates addBA on our behalf by calling
 816          * ieee80211_start_tx_ba_session()
 817          */
 818         return 0;
 819 }
 820
 821 static int
 822 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 823                     struct ieee80211_vif *vif,
 824                     enum ieee80211_ampdu_mlme_action action,
 825                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 826                     u8 buf_size)
 827 {
 828         struct brcms_info *wl = hw->priv;
 829         struct scb *scb = &wl->wlc->pri_scb;
 830         int status;
 831
 832         if (WARN_ON(scb->magic != SCB_MAGIC))
 833                 return -EIDRM;
 834         switch (action) {
 835         case IEEE80211_AMPDU_RX_START:
 836                 break;
 837         case IEEE80211_AMPDU_RX_STOP:
 838                 break;
 839         case IEEE80211_AMPDU_TX_START:
 840                 spin_lock_bh(&wl->lock);
 841                 status = brcms_c_aggregatable(wl->wlc, tid);
 842                 spin_unlock_bh(&wl->lock);
 843                 if (!status) {
 844                         brcms_err(wl->wlc->hw->d11core,
 845                                   "START: tid %d is not agg\'able\n", tid);
 846                         return -EINVAL;
 847                 }
 848                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 849                 break;
 850
 851         case IEEE80211_AMPDU_TX_STOP_CONT:
 852         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 853         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 854                 spin_lock_bh(&wl->lock);
 855                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 856                 spin_unlock_bh(&wl->lock);
 857                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 858                 break;
 859         case IEEE80211_AMPDU_TX_OPERATIONAL:
 860                 /*
 861                  * BA window size from ADDBA response ('buf_size') defines how
 862                  * many outstanding MPDUs are allowed for the BA stream by
 863                  * recipient and traffic class. 'ampdu_factor' gives maximum
 864                  * AMPDU size.
 865                  */
 866                 spin_lock_bh(&wl->lock);
 867                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 868                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 869                          sta->ht_cap.ampdu_factor)) - 1);
 870                 spin_unlock_bh(&wl->lock);
 871                 /* Power save wakeup */
 872                 break;
 873         default:
 874                 brcms_err(wl->wlc->hw->d11core,
 875                           "%s: Invalid command, ignoring\n", __func__);
 876         }
 877
 878         return 0;
 879 }
 880
 881 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 882 {
 883         struct brcms_info *wl = hw->priv;
 884         bool blocked;
 885
 886         spin_lock_bh(&wl->lock);
 887         blocked = brcms_c_check_radio_disabled(wl->wlc);
 888         spin_unlock_bh(&wl->lock);
 889
 890         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 891 }
 892
 893 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 894 {
 895         bool result;
 896
 897         spin_lock_bh(&wl->lock);
 898         result = brcms_c_tx_flush_completed(wl->wlc);
 899         spin_unlock_bh(&wl->lock);
 900         return result;
 901 }
 902
 903 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 904                             u32 queues, bool drop)
 905 {
 906         struct brcms_info *wl = hw->priv;
 907         int ret;
 908
 909         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 910
 911         ret = wait_event_timeout(wl->tx_flush_wq,
 912                                  brcms_tx_flush_completed(wl),
 913                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 914
 915         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 916                            "ret=%d\n", jiffies_to_msecs(ret));
 917 }
 918
 919 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 920 {
 921         struct brcms_info *wl = hw->priv;
 922         u64 tsf;
 923
 924         spin_lock_bh(&wl->lock);
 925         tsf = brcms_c_tsf_get(wl->wlc);
 926         spin_unlock_bh(&wl->lock);
 927
 928         return tsf;
 929 }
 930
 931 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 932                            struct ieee80211_vif *vif, u64 tsf)
 933 {
 934         struct brcms_info *wl = hw->priv;
 935
 936         spin_lock_bh(&wl->lock);
 937         brcms_c_tsf_set(wl->wlc, tsf);
 938         spin_unlock_bh(&wl->lock);
 939 }
 940
 941 static const struct ieee80211_ops brcms_ops = {
 942         .tx = brcms_ops_tx,
 943         .start = brcms_ops_start,
 944         .stop = brcms_ops_stop,
 945         .add_interface = brcms_ops_add_interface,
 946         .remove_interface = brcms_ops_remove_interface,
 947         .config = brcms_ops_config,
 948         .bss_info_changed = brcms_ops_bss_info_changed,
 949         .configure_filter = brcms_ops_configure_filter,
 950         .sw_scan_start = brcms_ops_sw_scan_start,
 951         .sw_scan_complete = brcms_ops_sw_scan_complete,
 952         .conf_tx = brcms_ops_conf_tx,
 953         .sta_add = brcms_ops_sta_add,
 954         .ampdu_action = brcms_ops_ampdu_action,
 955         .rfkill_poll = brcms_ops_rfkill_poll,
 956         .flush = brcms_ops_flush,
 957         .get_tsf = brcms_ops_get_tsf,
 958         .set_tsf = brcms_ops_set_tsf,
 959 };
 960
 961 void brcms_dpc(unsigned long data)
 962 {
 963         struct brcms_info *wl;
 964
 965         wl = (struct brcms_info *) data;
 966
 967         spin_lock_bh(&wl->lock);
 968
 969         /* call the common second level interrupt handler */
 970         if (wl->pub->up) {
 971                 if (wl->resched) {
 972                         unsigned long flags;
 973
 974                         spin_lock_irqsave(&wl->isr_lock, flags);
 975                         brcms_c_intrsupd(wl->wlc);
 976                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 977                 }
 978
 979                 wl->resched = brcms_c_dpc(wl->wlc, true);
 980         }
 981
 982         /* brcms_c_dpc() may bring the driver down */
 983         if (!wl->pub->up)
 984                 goto done;
 985
 986         /* re-schedule dpc */
 987         if (wl->resched)
 988                 tasklet_schedule(&wl->tasklet);
 989         else
 990                 /* re-enable interrupts */
 991                 brcms_intrson(wl);
 992
 993  done:
 994         spin_unlock_bh(&wl->lock);
 995         wake_up(&wl->tx_flush_wq);
 996 }
 997
 998 static irqreturn_t brcms_isr(int irq, void *dev_id)
 999 {
1000         struct brcms_info *wl;
1001         irqreturn_t ret = IRQ_NONE;
1002
1003         wl = (struct brcms_info *) dev_id;
1004
1005         spin_lock(&wl->isr_lock);
1006
1007         /* call common first level interrupt handler */
1008         if (brcms_c_isr(wl->wlc)) {
1009                 /* schedule second level handler */
1010                 tasklet_schedule(&wl->tasklet);
1011                 ret = IRQ_HANDLED;
1012         }
1013
1014         spin_unlock(&wl->isr_lock);
1015
1016         return ret;
1017 }
1018
1019 /*
1020  * is called in brcms_pci_probe() context, therefore no locking required.
1021  */
1022 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1023 {
1024         struct brcms_info *wl = hw->priv;
1025         struct brcms_c_info *wlc = wl->wlc;
1026         struct ieee80211_supported_band *band;
1027         int has_5g = 0;
1028         u16 phy_type;
1029
1030         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1031         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1032
1033         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1034         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1035                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1036                 *band = brcms_band_2GHz_nphy_template;
1037                 if (phy_type == PHY_TYPE_LCN) {
1038                         /* Single stream */
1039                         band->ht_cap.mcs.rx_mask[1] = 0;
1040                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1041                 }
1042                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1043         } else {
1044                 return -EPERM;
1045         }
1046
1047         /* Assume all bands use the same phy.  True for 11n devices. */
1048         if (wl->pub->_nbands > 1) {
1049                 has_5g++;
1050                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1051                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1052                         *band = brcms_band_5GHz_nphy_template;
1053                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1054                 } else {
1055                         return -EPERM;
1056                 }
1057         }
1058         return 0;
1059 }
1060
1061 /*
1062  * is called in brcms_pci_probe() context, therefore no locking required.
1063  */
1064 static int ieee_hw_init(struct ieee80211_hw *hw)
1065 {
1066         hw->flags = IEEE80211_HW_SIGNAL_DBM
1067             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
1068             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1069             | IEEE80211_HW_AMPDU_AGGREGATION;
1070
1071         hw->extra_tx_headroom = brcms_c_get_header_len();
1072         hw->queues = N_TX_QUEUES;
1073         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1074
1075         /* channel change time is dependent on chip and band  */
1076         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1077                                      BIT(NL80211_IFTYPE_AP) |
1078                                      BIT(NL80211_IFTYPE_ADHOC);
1079
1080         /*
1081          * deactivate sending probe responses by ucude, because this will
1082          * cause problems when WPS is used.
1083          *
1084          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1085          */
1086
1087         hw->rate_control_algorithm = "minstrel_ht";
1088
1089         hw->sta_data_size = 0;
1090         return ieee_hw_rate_init(hw);
1091 }
1092
1093 /**
1094  * attach to the WL device.
1095  *
1096  * Attach to the WL device identified by vendor and device parameters.
1097  * regs is a host accessible memory address pointing to WL device registers.
1098  *
1099  * is called in brcms_bcma_probe() context, therefore no locking required.
1100  */
1101 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1102 {
1103         struct brcms_info *wl = NULL;
1104         int unit, err;
1105         struct ieee80211_hw *hw;
1106         u8 perm[ETH_ALEN];
1107
1108         unit = n_adapters_found;
1109         err = 0;
1110
1111         if (unit < 0)
1112                 return NULL;
1113
1114         /* allocate private info */
1115         hw = bcma_get_drvdata(pdev);
1116         if (hw != NULL)
1117                 wl = hw->priv;
1118         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1119                 return NULL;
1120         wl->wiphy = hw->wiphy;
1121
1122         atomic_set(&wl->callbacks, 0);
1123
1124         init_waitqueue_head(&wl->tx_flush_wq);
1125
1126         /* setup the bottom half handler */
1127         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1128
1129         spin_lock_init(&wl->lock);
1130         spin_lock_init(&wl->isr_lock);
1131
1132         /* common load-time initialization */
1133         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1134         if (!wl->wlc) {
1135                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1136                           KBUILD_MODNAME, err);
1137                 goto fail;
1138         }
1139         wl->pub = brcms_c_pub(wl->wlc);
1140
1141         wl->pub->ieee_hw = hw;
1142
1143         /* register our interrupt handler */
1144         if (request_irq(pdev->irq, brcms_isr,
1145                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1146                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1147                 goto fail;
1148         }
1149         wl->irq = pdev->irq;
1150
1151         /* register module */
1152         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1153
1154         if (ieee_hw_init(hw)) {
1155                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1156                           __func__);
1157                 goto fail;
1158         }
1159
1160         brcms_c_regd_init(wl->wlc);
1161
1162         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1163         if (WARN_ON(!is_valid_ether_addr(perm)))
1164                 goto fail;
1165         SET_IEEE80211_PERM_ADDR(hw, perm);
1166
1167         err = ieee80211_register_hw(hw);
1168         if (err)
1169                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1170                           "%d\n", __func__, err);
1171
1172         if (wl->pub->srom_ccode[0] &&
1173             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1174                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1175
1176         brcms_debugfs_attach(wl->pub);
1177         brcms_debugfs_create_files(wl->pub);
1178         n_adapters_found++;
1179         return wl;
1180
1181 fail:
1182         brcms_free(wl);
1183         return NULL;
1184 }
1185
1186
1187
1188 /**
1189  * determines if a device is a WL device, and if so, attaches it.
1190  *
1191  * This function determines if a device pointed to by pdev is a WL device,
1192  * and if so, performs a brcms_attach() on it.
1193  *
1194  * Perimeter lock is initialized in the course of this function.
1195  */
1196 static int brcms_bcma_probe(struct bcma_device *pdev)
1197 {
1198         struct brcms_info *wl;
1199         struct ieee80211_hw *hw;
1200
1201         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1202                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1203                  pdev->irq);
1204
1205         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1206             (pdev->id.id != BCMA_CORE_80211))
1207                 return -ENODEV;
1208
1209         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1210         if (!hw) {
1211                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1212                 return -ENOMEM;
1213         }
1214
1215         SET_IEEE80211_DEV(hw, &pdev->dev);
1216
1217         bcma_set_drvdata(pdev, hw);
1218
1219         memset(hw->priv, 0, sizeof(*wl));
1220
1221         wl = brcms_attach(pdev);
1222         if (!wl) {
1223                 pr_err("%s: brcms_attach failed!\n", __func__);
1224                 return -ENODEV;
1225         }
1226         brcms_led_register(wl);
1227
1228         return 0;
1229 }
1230
1231 static int brcms_suspend(struct bcma_device *pdev)
1232 {
1233         struct brcms_info *wl;
1234         struct ieee80211_hw *hw;
1235
1236         hw = bcma_get_drvdata(pdev);
1237         wl = hw->priv;
1238         if (!wl) {
1239                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1240                        __func__);
1241                 return -ENODEV;
1242         }
1243
1244         /* only need to flag hw is down for proper resume */
1245         spin_lock_bh(&wl->lock);
1246         wl->pub->hw_up = false;
1247         spin_unlock_bh(&wl->lock);
1248
1249         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1250
1251         return 0;
1252 }
1253
1254 static int brcms_resume(struct bcma_device *pdev)
1255 {
1256         return 0;
1257 }
1258
1259 static struct bcma_driver brcms_bcma_driver = {
1260         .name     = KBUILD_MODNAME,
1261         .probe    = brcms_bcma_probe,
1262         .suspend  = brcms_suspend,
1263         .resume   = brcms_resume,
1264         .remove   = brcms_remove,
1265         .id_table = brcms_coreid_table,
1266 };
1267
1268 /**
1269  * This is the main entry point for the brcmsmac driver.
1270  *
1271  * This function is scheduled upon module initialization and
1272  * does the driver registration, which result in brcms_bcma_probe()
1273  * call resulting in the driver bringup.
1274  */
1275 static void brcms_driver_init(struct work_struct *work)
1276 {
1277         int error;
1278
1279         error = bcma_driver_register(&brcms_bcma_driver);
1280         if (error)
1281                 pr_err("%s: register returned %d\n", __func__, error);
1282 }
1283
1284 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1285
1286 static int __init brcms_module_init(void)
1287 {
1288         brcms_debugfs_init();
1289         if (!schedule_work(&brcms_driver_work))
1290                 return -EBUSY;
1291
1292         return 0;
1293 }
1294
1295 /**
1296  * This function unloads the brcmsmac driver from the system.
1297  *
1298  * This function unconditionally unloads the brcmsmac driver module from the
1299  * system.
1300  *
1301  */
1302 static void __exit brcms_module_exit(void)
1303 {
1304         cancel_work_sync(&brcms_driver_work);
1305         bcma_driver_unregister(&brcms_bcma_driver);
1306         brcms_debugfs_exit();
1307 }
1308
1309 module_init(brcms_module_init);
1310 module_exit(brcms_module_exit);
1311
1312 /*
1313  * precondition: perimeter lock has been acquired
1314  */
1315 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1316                          bool state, int prio)
1317 {
1318         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1319 }
1320
1321 /*
1322  * precondition: perimeter lock has been acquired
1323  */
1324 void brcms_init(struct brcms_info *wl)
1325 {
1326         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1327                        wl->pub->unit);
1328         brcms_reset(wl);
1329         brcms_c_init(wl->wlc, wl->mute_tx);
1330 }
1331
1332 /*
1333  * precondition: perimeter lock has been acquired
1334  */
1335 uint brcms_reset(struct brcms_info *wl)
1336 {
1337         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1338         brcms_c_reset(wl->wlc);
1339
1340         /* dpc will not be rescheduled */
1341         wl->resched = false;
1342
1343         /* inform publicly that interface is down */
1344         wl->pub->up = false;
1345
1346         return 0;
1347 }
1348
1349 void brcms_fatal_error(struct brcms_info *wl)
1350 {
1351         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1352                   wl->wlc->pub->unit);
1353         brcms_reset(wl);
1354         ieee80211_restart_hw(wl->pub->ieee_hw);
1355 }
1356
1357 /*
1358  * These are interrupt on/off entry points. Disable interrupts
1359  * during interrupt state transition.
1360  */
1361 void brcms_intrson(struct brcms_info *wl)
1362 {
1363         unsigned long flags;
1364
1365         spin_lock_irqsave(&wl->isr_lock, flags);
1366         brcms_c_intrson(wl->wlc);
1367         spin_unlock_irqrestore(&wl->isr_lock, flags);
1368 }
1369
1370 u32 brcms_intrsoff(struct brcms_info *wl)
1371 {
1372         unsigned long flags;
1373         u32 status;
1374
1375         spin_lock_irqsave(&wl->isr_lock, flags);
1376         status = brcms_c_intrsoff(wl->wlc);
1377         spin_unlock_irqrestore(&wl->isr_lock, flags);
1378         return status;
1379 }
1380
1381 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1382 {
1383         unsigned long flags;
1384
1385         spin_lock_irqsave(&wl->isr_lock, flags);
1386         brcms_c_intrsrestore(wl->wlc, macintmask);
1387         spin_unlock_irqrestore(&wl->isr_lock, flags);
1388 }
1389
1390 /*
1391  * precondition: perimeter lock has been acquired
1392  */
1393 int brcms_up(struct brcms_info *wl)
1394 {
1395         int error = 0;
1396
1397         if (wl->pub->up)
1398                 return 0;
1399
1400         error = brcms_c_up(wl->wlc);
1401
1402         return error;
1403 }
1404
1405 /*
1406  * precondition: perimeter lock has been acquired
1407  */
1408 void brcms_down(struct brcms_info *wl)
1409 {
1410         uint callbacks, ret_val = 0;
1411
1412         /* call common down function */
1413         ret_val = brcms_c_down(wl->wlc);
1414         callbacks = atomic_read(&wl->callbacks) - ret_val;
1415
1416         /* wait for down callbacks to complete */
1417         spin_unlock_bh(&wl->lock);
1418
1419         /* For HIGH_only driver, it's important to actually schedule other work,
1420          * not just spin wait since everything runs at schedule level
1421          */
1422         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1423
1424         spin_lock_bh(&wl->lock);
1425 }
1426
1427 /*
1428 * precondition: perimeter lock is not acquired
1429  */
1430 static void _brcms_timer(struct work_struct *work)
1431 {
1432         struct brcms_timer *t = container_of(work, struct brcms_timer,
1433                                              dly_wrk.work);
1434
1435         spin_lock_bh(&t->wl->lock);
1436
1437         if (t->set) {
1438                 if (t->periodic) {
1439                         atomic_inc(&t->wl->callbacks);
1440                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1441                                                      &t->dly_wrk,
1442                                                      msecs_to_jiffies(t->ms));
1443                 } else {
1444                         t->set = false;
1445                 }
1446
1447                 t->fn(t->arg);
1448         }
1449
1450         atomic_dec(&t->wl->callbacks);
1451
1452         spin_unlock_bh(&t->wl->lock);
1453 }
1454
1455 /*
1456  * Adds a timer to the list. Caller supplies a timer function.
1457  * Is called from wlc.
1458  *
1459  * precondition: perimeter lock has been acquired
1460  */
1461 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1462                                      void (*fn) (void *arg),
1463                                      void *arg, const char *name)
1464 {
1465         struct brcms_timer *t;
1466
1467         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1468         if (!t)
1469                 return NULL;
1470
1471         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1472         t->wl = wl;
1473         t->fn = fn;
1474         t->arg = arg;
1475         t->next = wl->timers;
1476         wl->timers = t;
1477
1478 #ifdef DEBUG
1479         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1480         if (t->name)
1481                 strcpy(t->name, name);
1482 #endif
1483
1484         return t;
1485 }
1486
1487 /*
1488  * adds only the kernel timer since it's going to be more accurate
1489  * as well as it's easier to make it periodic
1490  *
1491  * precondition: perimeter lock has been acquired
1492  */
1493 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1494 {
1495         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1496
1497 #ifdef DEBUG
1498         if (t->set)
1499                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1500                                "%s: Already set. Name: %s, per %d\n",
1501                                __func__, t->name, periodic);
1502 #endif
1503         t->ms = ms;
1504         t->periodic = (bool) periodic;
1505         if (!t->set) {
1506                 t->set = true;
1507                 atomic_inc(&t->wl->callbacks);
1508         }
1509
1510         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1511 }
1512
1513 /*
1514  * return true if timer successfully deleted, false if still pending
1515  *
1516  * precondition: perimeter lock has been acquired
1517  */
1518 bool brcms_del_timer(struct brcms_timer *t)
1519 {
1520         if (t->set) {
1521                 t->set = false;
1522                 if (!cancel_delayed_work(&t->dly_wrk))
1523                         return false;
1524
1525                 atomic_dec(&t->wl->callbacks);
1526         }
1527
1528         return true;
1529 }
1530
1531 /*
1532  * precondition: perimeter lock has been acquired
1533  */
1534 void brcms_free_timer(struct brcms_timer *t)
1535 {
1536         struct brcms_info *wl = t->wl;
1537         struct brcms_timer *tmp;
1538
1539         /* delete the timer in case it is active */
1540         brcms_del_timer(t);
1541
1542         if (wl->timers == t) {
1543                 wl->timers = wl->timers->next;
1544 #ifdef DEBUG
1545                 kfree(t->name);
1546 #endif
1547                 kfree(t);
1548                 return;
1549
1550         }
1551
1552         tmp = wl->timers;
1553         while (tmp) {
1554                 if (tmp->next == t) {
1555                         tmp->next = t->next;
1556 #ifdef DEBUG
1557                         kfree(t->name);
1558 #endif
1559                         kfree(t);
1560                         return;
1561                 }
1562                 tmp = tmp->next;
1563         }
1564
1565 }
1566
1567 /*
1568  * precondition: perimeter lock has been acquired
1569  */
1570 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1571 {
1572         int i, entry;
1573         const u8 *pdata;
1574         struct firmware_hdr *hdr;
1575         for (i = 0; i < wl->fw.fw_cnt; i++) {
1576                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1577                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1578                      entry++, hdr++) {
1579                         u32 len = le32_to_cpu(hdr->len);
1580                         if (le32_to_cpu(hdr->idx) == idx) {
1581                                 pdata = wl->fw.fw_bin[i]->data +
1582                                         le32_to_cpu(hdr->offset);
1583                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1584                                 if (*pbuf == NULL)
1585                                         goto fail;
1586
1587                                 return 0;
1588                         }
1589                 }
1590         }
1591         brcms_err(wl->wlc->hw->d11core,
1592                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1593         *pbuf = NULL;
1594 fail:
1595         return -ENODATA;
1596 }
1597
1598 /*
1599  * Precondition: Since this function is called in brcms_bcma_probe() context,
1600  * no locking is required.
1601  */
1602 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1603 {
1604         int i, entry;
1605         const u8 *pdata;
1606         struct firmware_hdr *hdr;
1607         for (i = 0; i < wl->fw.fw_cnt; i++) {
1608                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1609                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1610                      entry++, hdr++) {
1611                         if (le32_to_cpu(hdr->idx) == idx) {
1612                                 pdata = wl->fw.fw_bin[i]->data +
1613                                         le32_to_cpu(hdr->offset);
1614                                 if (le32_to_cpu(hdr->len) != 4) {
1615                                         brcms_err(wl->wlc->hw->d11core,
1616                                                   "ERROR: fw hdr len\n");
1617                                         return -ENOMSG;
1618                                 }
1619                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1620                                 return 0;
1621                         }
1622                 }
1623         }
1624         brcms_err(wl->wlc->hw->d11core,
1625                   "ERROR: ucode tag:%d can not be found!\n", idx);
1626         return -ENOMSG;
1627 }
1628
1629 /*
1630  * precondition: can both be called locked and unlocked
1631  */
1632 void brcms_ucode_free_buf(void *p)
1633 {
1634         kfree(p);
1635 }
1636
1637 /*
1638  * checks validity of all firmware images loaded from user space
1639  *
1640  * Precondition: Since this function is called in brcms_bcma_probe() context,
1641  * no locking is required.
1642  */
1643 int brcms_check_firmwares(struct brcms_info *wl)
1644 {
1645         int i;
1646         int entry;
1647         int rc = 0;
1648         const struct firmware *fw;
1649         const struct firmware *fw_hdr;
1650         struct firmware_hdr *ucode_hdr;
1651         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1652                 fw =  wl->fw.fw_bin[i];
1653                 fw_hdr = wl->fw.fw_hdr[i];
1654                 if (fw == NULL && fw_hdr == NULL) {
1655                         break;
1656                 } else if (fw == NULL || fw_hdr == NULL) {
1657                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1658                                   __func__);
1659                         rc = -EBADF;
1660                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1661                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1662                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1663                                 sizeof(struct firmware_hdr));
1664                         rc = -EBADF;
1665                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1666                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1667                                   __func__, fw->size);
1668                         rc = -EBADF;
1669                 } else {
1670                         /* check if ucode section overruns firmware image */
1671                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1672                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1673                              !rc; entry++, ucode_hdr++) {
1674                                 if (le32_to_cpu(ucode_hdr->offset) +
1675                                     le32_to_cpu(ucode_hdr->len) >
1676                                     fw->size) {
1677                                         wiphy_err(wl->wiphy,
1678                                                   "%s: conflicting bin/hdr\n",
1679                                                   __func__);
1680                                         rc = -EBADF;
1681                                 }
1682                         }
1683                 }
1684         }
1685         if (rc == 0 && wl->fw.fw_cnt != i) {
1686                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1687                         wl->fw.fw_cnt);
1688                 rc = -EBADF;
1689         }
1690         return rc;
1691 }
1692
1693 /*
1694  * precondition: perimeter lock has been acquired
1695  */
1696 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1697 {
1698         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1699
1700         spin_unlock_bh(&wl->lock);
1701         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1702         if (blocked)
1703                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1704         spin_lock_bh(&wl->lock);
1705         return blocked;
1706 }