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         "/*(DEBLOBBED)*/",
  83         NULL
  84 };
  85
  86 static int n_adapters_found;
  87
  88 MODULE_AUTHOR("Broadcom Corporation");
  89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  90 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  91 MODULE_LICENSE("Dual BSD/GPL");
  92 /* This needs to be adjusted when brcms_firmwares changes */
  93 /*(DEBLOBBED)*/
  94
  95 /* recognized BCMA Core IDs */
  96 static struct bcma_device_id brcms_coreid_table[] = {
  97         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 100         {},
 101 };
 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 103
 104 #if defined(CONFIG_BRCMDBG)
 105 /*
 106  * Module parameter for setting the debug message level. Available
 107  * flags are specified by the BRCM_DL_* macros in
 108  * drivers/net/wireless/brcm80211/include/defs.h.
 109  */
 110 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
 111 #endif
 112
 113 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 114         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 115         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(5, 2432, 0),
 119         CHAN2GHZ(6, 2437, 0),
 120         CHAN2GHZ(7, 2442, 0),
 121         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(12, 2467,
 126                  IEEE80211_CHAN_NO_IR |
 127                  IEEE80211_CHAN_NO_HT40PLUS),
 128         CHAN2GHZ(13, 2472,
 129                  IEEE80211_CHAN_NO_IR |
 130                  IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN2GHZ(14, 2484,
 132                  IEEE80211_CHAN_NO_IR |
 133                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 134                  IEEE80211_CHAN_NO_OFDM)
 135 };
 136
 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 138         /* UNII-1 */
 139         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 140         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 143         /* UNII-2 */
 144         CHAN5GHZ(52,
 145                  IEEE80211_CHAN_RADAR |
 146                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 147         CHAN5GHZ(56,
 148                  IEEE80211_CHAN_RADAR |
 149                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 150         CHAN5GHZ(60,
 151                  IEEE80211_CHAN_RADAR |
 152                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 153         CHAN5GHZ(64,
 154                  IEEE80211_CHAN_RADAR |
 155                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 156         /* MID */
 157         CHAN5GHZ(100,
 158                  IEEE80211_CHAN_RADAR |
 159                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 160         CHAN5GHZ(104,
 161                  IEEE80211_CHAN_RADAR |
 162                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 163         CHAN5GHZ(108,
 164                  IEEE80211_CHAN_RADAR |
 165                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 166         CHAN5GHZ(112,
 167                  IEEE80211_CHAN_RADAR |
 168                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 169         CHAN5GHZ(116,
 170                  IEEE80211_CHAN_RADAR |
 171                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 172         CHAN5GHZ(120,
 173                  IEEE80211_CHAN_RADAR |
 174                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 175         CHAN5GHZ(124,
 176                  IEEE80211_CHAN_RADAR |
 177                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 178         CHAN5GHZ(128,
 179                  IEEE80211_CHAN_RADAR |
 180                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 181         CHAN5GHZ(132,
 182                  IEEE80211_CHAN_RADAR |
 183                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(136,
 185                  IEEE80211_CHAN_RADAR |
 186                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(140,
 188                  IEEE80211_CHAN_RADAR |
 189                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 190                  IEEE80211_CHAN_NO_HT40MINUS),
 191         /* UNII-3 */
 192         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 193         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 194         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 197 };
 198
 199 /*
 200  * The rate table is used for both 2.4G and 5G rates. The
 201  * latter being a subset as it does not support CCK rates.
 202  */
 203 static struct ieee80211_rate legacy_ratetable[] = {
 204         RATE(10, 0),
 205         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 206         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(60, 0),
 209         RATE(90, 0),
 210         RATE(120, 0),
 211         RATE(180, 0),
 212         RATE(240, 0),
 213         RATE(360, 0),
 214         RATE(480, 0),
 215         RATE(540, 0),
 216 };
 217
 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 219         .band = NL80211_BAND_2GHZ,
 220         .channels = brcms_2ghz_chantable,
 221         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 222         .bitrates = legacy_ratetable,
 223         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 224         .ht_cap = {
 225                    /* from include/linux/ieee80211.h */
 226                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 227                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 228                    .ht_supported = true,
 229                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 230                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 231                    .mcs = {
 232                            /* placeholders for now */
 233                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 234                            .rx_highest = cpu_to_le16(500),
 235                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 236                    }
 237 };
 238
 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 240         .band = NL80211_BAND_5GHZ,
 241         .channels = brcms_5ghz_nphy_chantable,
 242         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 243         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 244         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 245                         BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .ht_cap = {
 247                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 248                           IEEE80211_HT_CAP_SGI_40,
 249                    .ht_supported = true,
 250                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 251                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 252                    .mcs = {
 253                            /* placeholders for now */
 254                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 255                            .rx_highest = cpu_to_le16(500),
 256                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 257                    }
 258 };
 259
 260 /* flags the given rate in rateset as requested */
 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 262 {
 263         u32 i;
 264
 265         for (i = 0; i < rs->count; i++) {
 266                 if (rate != (rs->rates[i] & 0x7f))
 267                         continue;
 268
 269                 if (is_br)
 270                         rs->rates[i] |= BRCMS_RATE_FLAG;
 271                 else
 272                         rs->rates[i] &= BRCMS_RATE_MASK;
 273                 return;
 274         }
 275 }
 276
 277 /**
 278  * This function frees the WL per-device resources.
 279  *
 280  * This function frees resources owned by the WL device pointed to
 281  * by the wl parameter.
 282  *
 283  * precondition: can both be called locked and unlocked
 284  *
 285  */
 286 static void brcms_free(struct brcms_info *wl)
 287 {
 288         struct brcms_timer *t, *next;
 289
 290         /* free ucode data */
 291         if (wl->fw.fw_cnt)
 292                 brcms_ucode_data_free(&wl->ucode);
 293         if (wl->irq)
 294                 free_irq(wl->irq, wl);
 295
 296         /* kill dpc */
 297         tasklet_kill(&wl->tasklet);
 298
 299         if (wl->pub) {
 300                 brcms_debugfs_detach(wl->pub);
 301                 brcms_c_module_unregister(wl->pub, "linux", wl);
 302         }
 303
 304         /* free common resources */
 305         if (wl->wlc) {
 306                 brcms_c_detach(wl->wlc);
 307                 wl->wlc = NULL;
 308                 wl->pub = NULL;
 309         }
 310
 311         /* virtual interface deletion is deferred so we cannot spinwait */
 312
 313         /* wait for all pending callbacks to complete */
 314         while (atomic_read(&wl->callbacks) > 0)
 315                 schedule();
 316
 317         /* free timers */
 318         for (t = wl->timers; t; t = next) {
 319                 next = t->next;
 320 #ifdef DEBUG
 321                 kfree(t->name);
 322 #endif
 323                 kfree(t);
 324         }
 325 }
 326
 327 /*
 328 * called from both kernel as from this kernel module (error flow on attach)
 329 * precondition: perimeter lock is not acquired.
 330 */
 331 static void brcms_remove(struct bcma_device *pdev)
 332 {
 333         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 334         struct brcms_info *wl = hw->priv;
 335
 336         if (wl->wlc) {
 337                 brcms_led_unregister(wl);
 338                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 339                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 340                 ieee80211_unregister_hw(hw);
 341         }
 342
 343         brcms_free(wl);
 344
 345         bcma_set_drvdata(pdev, NULL);
 346         ieee80211_free_hw(hw);
 347 }
 348
 349 /*
 350  * Precondition: Since this function is called in brcms_pci_probe() context,
 351  * no locking is required.
 352  */
 353 static void brcms_release_fw(struct brcms_info *wl)
 354 {
 355         int i;
 356         for (i = 0; i < MAX_FW_IMAGES; i++) {
 357                 release_firmware(wl->fw.fw_bin[i]);
 358                 release_firmware(wl->fw.fw_hdr[i]);
 359         }
 360 }
 361
 362 /*
 363  * Precondition: Since this function is called in brcms_pci_probe() context,
 364  * no locking is required.
 365  */
 366 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 367 {
 368         int status;
 369         struct device *device = &pdev->dev;
 370         char fw_name[100];
 371         int i;
 372
 373         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 374         for (i = 0; i < MAX_FW_IMAGES; i++) {
 375                 if (brcms_firmwares[i] == NULL)
 376                         break;
 377                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 378                         UCODE_LOADER_API_VER);
 379                 status = reject_firmware(&wl->fw.fw_bin[i], fw_name, device);
 380                 if (status) {
 381                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 382                                   KBUILD_MODNAME, fw_name);
 383                         return status;
 384                 }
 385                 sprintf(fw_name, "/*(DEBLOBBED)*/", brcms_firmwares[i],
 386                         UCODE_LOADER_API_VER);
 387                 status = reject_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 388                 if (status) {
 389                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 390                                   KBUILD_MODNAME, fw_name);
 391                         return status;
 392                 }
 393                 wl->fw.hdr_num_entries[i] =
 394                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 395         }
 396         wl->fw.fw_cnt = i;
 397         status = brcms_ucode_data_init(wl, &wl->ucode);
 398         brcms_release_fw(wl);
 399         return status;
 400 }
 401
 402 static void brcms_ops_tx(struct ieee80211_hw *hw,
 403                          struct ieee80211_tx_control *control,
 404                          struct sk_buff *skb)
 405 {
 406         struct brcms_info *wl = hw->priv;
 407         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 408
 409         spin_lock_bh(&wl->lock);
 410         if (!wl->pub->up) {
 411                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 412                 kfree_skb(skb);
 413                 goto done;
 414         }
 415         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 416                 tx_info->rate_driver_data[0] = control->sta;
 417  done:
 418         spin_unlock_bh(&wl->lock);
 419 }
 420
 421 static int brcms_ops_start(struct ieee80211_hw *hw)
 422 {
 423         struct brcms_info *wl = hw->priv;
 424         bool blocked;
 425         int err;
 426
 427         if (!wl->ucode.bcm43xx_bomminor) {
 428                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 429                 if (err)
 430                         return -ENOENT;
 431         }
 432
 433         ieee80211_wake_queues(hw);
 434         spin_lock_bh(&wl->lock);
 435         blocked = brcms_rfkill_set_hw_state(wl);
 436         spin_unlock_bh(&wl->lock);
 437         if (!blocked)
 438                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 439
 440         spin_lock_bh(&wl->lock);
 441         /* avoid acknowledging frames before a non-monitor device is added */
 442         wl->mute_tx = true;
 443
 444         if (!wl->pub->up)
 445                 if (!blocked)
 446                         err = brcms_up(wl);
 447                 else
 448                         err = -ERFKILL;
 449         else
 450                 err = -ENODEV;
 451         spin_unlock_bh(&wl->lock);
 452
 453         if (err != 0)
 454                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 455                           __func__, err);
 456
 457         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 458         return err;
 459 }
 460
 461 static void brcms_ops_stop(struct ieee80211_hw *hw)
 462 {
 463         struct brcms_info *wl = hw->priv;
 464         int status;
 465
 466         ieee80211_stop_queues(hw);
 467
 468         if (wl->wlc == NULL)
 469                 return;
 470
 471         spin_lock_bh(&wl->lock);
 472         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 473         spin_unlock_bh(&wl->lock);
 474         if (!status) {
 475                 brcms_err(wl->wlc->hw->d11core,
 476                           "wl: brcms_ops_stop: chipmatch failed\n");
 477                 return;
 478         }
 479
 480         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 481
 482         /* put driver in down state */
 483         spin_lock_bh(&wl->lock);
 484         brcms_down(wl);
 485         spin_unlock_bh(&wl->lock);
 486 }
 487
 488 static int
 489 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 490 {
 491         struct brcms_info *wl = hw->priv;
 492
 493         /* Just STA, AP and ADHOC for now */
 494         if (vif->type != NL80211_IFTYPE_STATION &&
 495             vif->type != NL80211_IFTYPE_AP &&
 496             vif->type != NL80211_IFTYPE_ADHOC) {
 497                 brcms_err(wl->wlc->hw->d11core,
 498                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 499                           __func__, vif->type);
 500                 return -EOPNOTSUPP;
 501         }
 502
 503         spin_lock_bh(&wl->lock);
 504         wl->mute_tx = false;
 505         brcms_c_mute(wl->wlc, false);
 506         if (vif->type == NL80211_IFTYPE_STATION)
 507                 brcms_c_start_station(wl->wlc, vif->addr);
 508         else if (vif->type == NL80211_IFTYPE_AP)
 509                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 510                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 511         else if (vif->type == NL80211_IFTYPE_ADHOC)
 512                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 513         spin_unlock_bh(&wl->lock);
 514
 515         return 0;
 516 }
 517
 518 static void
 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 520 {
 521 }
 522
 523 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 524 {
 525         struct ieee80211_conf *conf = &hw->conf;
 526         struct brcms_info *wl = hw->priv;
 527         struct bcma_device *core = wl->wlc->hw->d11core;
 528         int err = 0;
 529         int new_int;
 530
 531         spin_lock_bh(&wl->lock);
 532         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 533                 brcms_c_set_beacon_listen_interval(wl->wlc,
 534                                                    conf->listen_interval);
 535         }
 536         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 537                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 538                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 539                                "true" : "false");
 540         if (changed & IEEE80211_CONF_CHANGE_PS)
 541                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 542                           __func__, conf->flags & IEEE80211_CONF_PS ?
 543                           "true" : "false");
 544
 545         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 546                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 547                 if (err < 0) {
 548                         brcms_err(core, "%s: Error setting power_level\n",
 549                                   __func__);
 550                         goto config_out;
 551                 }
 552                 new_int = brcms_c_get_tx_power(wl->wlc);
 553                 if (new_int != conf->power_level)
 554                         brcms_err(core,
 555                                   "%s: Power level req != actual, %d %d\n",
 556                                   __func__, conf->power_level,
 557                                   new_int);
 558         }
 559         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 560                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 561                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 562                         err = brcms_c_set_channel(wl->wlc,
 563                                                   conf->chandef.chan->hw_value);
 564                 else
 565                         err = -ENOTSUPP;
 566         }
 567         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 568                 err = brcms_c_set_rate_limit(wl->wlc,
 569                                              conf->short_frame_max_tx_count,
 570                                              conf->long_frame_max_tx_count);
 571
 572  config_out:
 573         spin_unlock_bh(&wl->lock);
 574         return err;
 575 }
 576
 577 static void
 578 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 579                         struct ieee80211_vif *vif,
 580                         struct ieee80211_bss_conf *info, u32 changed)
 581 {
 582         struct brcms_info *wl = hw->priv;
 583         struct bcma_device *core = wl->wlc->hw->d11core;
 584
 585         if (changed & BSS_CHANGED_ASSOC) {
 586                 /* association status changed (associated/disassociated)
 587                  * also implies a change in the AID.
 588                  */
 589                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 590                           __func__, info->assoc ? "" : "dis");
 591                 spin_lock_bh(&wl->lock);
 592                 brcms_c_associate_upd(wl->wlc, info->assoc);
 593                 spin_unlock_bh(&wl->lock);
 594         }
 595         if (changed & BSS_CHANGED_ERP_SLOT) {
 596                 s8 val;
 597
 598                 /* slot timing changed */
 599                 if (info->use_short_slot)
 600                         val = 1;
 601                 else
 602                         val = 0;
 603                 spin_lock_bh(&wl->lock);
 604                 brcms_c_set_shortslot_override(wl->wlc, val);
 605                 spin_unlock_bh(&wl->lock);
 606         }
 607
 608         if (changed & BSS_CHANGED_HT) {
 609                 /* 802.11n parameters changed */
 610                 u16 mode = info->ht_operation_mode;
 611
 612                 spin_lock_bh(&wl->lock);
 613                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 614                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 615                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 616                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 617                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 618                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 619                 spin_unlock_bh(&wl->lock);
 620         }
 621         if (changed & BSS_CHANGED_BASIC_RATES) {
 622                 struct ieee80211_supported_band *bi;
 623                 u32 br_mask, i;
 624                 u16 rate;
 625                 struct brcm_rateset rs;
 626                 int error;
 627
 628                 /* retrieve the current rates */
 629                 spin_lock_bh(&wl->lock);
 630                 brcms_c_get_current_rateset(wl->wlc, &rs);
 631                 spin_unlock_bh(&wl->lock);
 632
 633                 br_mask = info->basic_rates;
 634                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 635                 for (i = 0; i < bi->n_bitrates; i++) {
 636                         /* convert to internal rate value */
 637                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 638
 639                         /* set/clear basic rate flag */
 640                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 641                         br_mask >>= 1;
 642                 }
 643
 644                 /* update the rate set */
 645                 spin_lock_bh(&wl->lock);
 646                 error = brcms_c_set_rateset(wl->wlc, &rs);
 647                 spin_unlock_bh(&wl->lock);
 648                 if (error)
 649                         brcms_err(core, "changing basic rates failed: %d\n",
 650                                   error);
 651         }
 652         if (changed & BSS_CHANGED_BEACON_INT) {
 653                 /* Beacon interval changed */
 654                 spin_lock_bh(&wl->lock);
 655                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 656                 spin_unlock_bh(&wl->lock);
 657         }
 658         if (changed & BSS_CHANGED_BSSID) {
 659                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 660                 spin_lock_bh(&wl->lock);
 661                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 662                 spin_unlock_bh(&wl->lock);
 663         }
 664         if (changed & BSS_CHANGED_SSID) {
 665                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 666                 spin_lock_bh(&wl->lock);
 667                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 668                 spin_unlock_bh(&wl->lock);
 669         }
 670         if (changed & BSS_CHANGED_BEACON) {
 671                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 672                 struct sk_buff *beacon;
 673                 u16 tim_offset = 0;
 674
 675                 spin_lock_bh(&wl->lock);
 676                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 677                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 678                                        info->dtim_period);
 679                 spin_unlock_bh(&wl->lock);
 680         }
 681
 682         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 683                 struct sk_buff *probe_resp;
 684
 685                 spin_lock_bh(&wl->lock);
 686                 probe_resp = ieee80211_proberesp_get(hw, vif);
 687                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 688                 spin_unlock_bh(&wl->lock);
 689         }
 690
 691         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 692                 /* Beaconing should be enabled/disabled (beaconing modes) */
 693                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 694                           info->enable_beacon ? "true" : "false");
 695                 if (info->enable_beacon &&
 696                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 697                         brcms_c_enable_probe_resp(wl->wlc, true);
 698                 } else {
 699                         brcms_c_enable_probe_resp(wl->wlc, false);
 700                 }
 701         }
 702
 703         if (changed & BSS_CHANGED_CQM) {
 704                 /* Connection quality monitor config changed */
 705                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 706                           " (implement)\n", __func__, info->cqm_rssi_thold,
 707                           info->cqm_rssi_hyst);
 708         }
 709
 710         if (changed & BSS_CHANGED_IBSS) {
 711                 /* IBSS join status changed */
 712                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 713                           __func__, info->ibss_joined ? "true" : "false");
 714         }
 715
 716         if (changed & BSS_CHANGED_ARP_FILTER) {
 717                 /* Hardware ARP filter address list or state changed */
 718                 brcms_err(core, "%s: arp filtering: %d addresses"
 719                           " (implement)\n", __func__, info->arp_addr_cnt);
 720         }
 721
 722         if (changed & BSS_CHANGED_QOS) {
 723                 /*
 724                  * QoS for this association was enabled/disabled.
 725                  * Note that it is only ever disabled for station mode.
 726                  */
 727                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 728                           __func__, info->qos ? "true" : "false");
 729         }
 730         return;
 731 }
 732
 733 static void
 734 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 735                         unsigned int changed_flags,
 736                         unsigned int *total_flags, u64 multicast)
 737 {
 738         struct brcms_info *wl = hw->priv;
 739         struct bcma_device *core = wl->wlc->hw->d11core;
 740
 741         changed_flags &= MAC_FILTERS;
 742         *total_flags &= MAC_FILTERS;
 743
 744         if (changed_flags & FIF_ALLMULTI)
 745                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 746         if (changed_flags & FIF_FCSFAIL)
 747                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 748         if (changed_flags & FIF_CONTROL)
 749                 brcms_dbg_info(core, "FIF_CONTROL\n");
 750         if (changed_flags & FIF_OTHER_BSS)
 751                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 752         if (changed_flags & FIF_PSPOLL)
 753                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 754         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 755                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 756
 757         spin_lock_bh(&wl->lock);
 758         brcms_c_mac_promisc(wl->wlc, *total_flags);
 759         spin_unlock_bh(&wl->lock);
 760         return;
 761 }
 762
 763 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 764                                     struct ieee80211_vif *vif,
 765                                     const u8 *mac_addr)
 766 {
 767         struct brcms_info *wl = hw->priv;
 768         spin_lock_bh(&wl->lock);
 769         brcms_c_scan_start(wl->wlc);
 770         spin_unlock_bh(&wl->lock);
 771         return;
 772 }
 773
 774 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 775                                        struct ieee80211_vif *vif)
 776 {
 777         struct brcms_info *wl = hw->priv;
 778         spin_lock_bh(&wl->lock);
 779         brcms_c_scan_stop(wl->wlc);
 780         spin_unlock_bh(&wl->lock);
 781         return;
 782 }
 783
 784 static int
 785 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 786                   const struct ieee80211_tx_queue_params *params)
 787 {
 788         struct brcms_info *wl = hw->priv;
 789
 790         spin_lock_bh(&wl->lock);
 791         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 792         spin_unlock_bh(&wl->lock);
 793
 794         return 0;
 795 }
 796
 797 static int
 798 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 799                struct ieee80211_sta *sta)
 800 {
 801         struct brcms_info *wl = hw->priv;
 802         struct scb *scb = &wl->wlc->pri_scb;
 803
 804         brcms_c_init_scb(scb);
 805
 806         wl->pub->global_ampdu = &(scb->scb_ampdu);
 807         wl->pub->global_ampdu->scb = scb;
 808         wl->pub->global_ampdu->max_pdu = 16;
 809
 810         /*
 811          * minstrel_ht initiates addBA on our behalf by calling
 812          * ieee80211_start_tx_ba_session()
 813          */
 814         return 0;
 815 }
 816
 817 static int
 818 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 819                     struct ieee80211_vif *vif,
 820                     struct ieee80211_ampdu_params *params)
 821 {
 822         struct brcms_info *wl = hw->priv;
 823         struct scb *scb = &wl->wlc->pri_scb;
 824         int status;
 825         struct ieee80211_sta *sta = params->sta;
 826         enum ieee80211_ampdu_mlme_action action = params->action;
 827         u16 tid = params->tid;
 828         u8 buf_size = params->buf_size;
 829
 830         if (WARN_ON(scb->magic != SCB_MAGIC))
 831                 return -EIDRM;
 832         switch (action) {
 833         case IEEE80211_AMPDU_RX_START:
 834                 break;
 835         case IEEE80211_AMPDU_RX_STOP:
 836                 break;
 837         case IEEE80211_AMPDU_TX_START:
 838                 spin_lock_bh(&wl->lock);
 839                 status = brcms_c_aggregatable(wl->wlc, tid);
 840                 spin_unlock_bh(&wl->lock);
 841                 if (!status) {
 842                         brcms_err(wl->wlc->hw->d11core,
 843                                   "START: tid %d is not agg\'able\n", tid);
 844                         return -EINVAL;
 845                 }
 846                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 847                 break;
 848
 849         case IEEE80211_AMPDU_TX_STOP_CONT:
 850         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 851         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 852                 spin_lock_bh(&wl->lock);
 853                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 854                 spin_unlock_bh(&wl->lock);
 855                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 856                 break;
 857         case IEEE80211_AMPDU_TX_OPERATIONAL:
 858                 /*
 859                  * BA window size from ADDBA response ('buf_size') defines how
 860                  * many outstanding MPDUs are allowed for the BA stream by
 861                  * recipient and traffic class. 'ampdu_factor' gives maximum
 862                  * AMPDU size.
 863                  */
 864                 spin_lock_bh(&wl->lock);
 865                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 866                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 867                          sta->ht_cap.ampdu_factor)) - 1);
 868                 spin_unlock_bh(&wl->lock);
 869                 /* Power save wakeup */
 870                 break;
 871         default:
 872                 brcms_err(wl->wlc->hw->d11core,
 873                           "%s: Invalid command, ignoring\n", __func__);
 874         }
 875
 876         return 0;
 877 }
 878
 879 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 880 {
 881         struct brcms_info *wl = hw->priv;
 882         bool blocked;
 883
 884         spin_lock_bh(&wl->lock);
 885         blocked = brcms_c_check_radio_disabled(wl->wlc);
 886         spin_unlock_bh(&wl->lock);
 887
 888         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 889 }
 890
 891 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 892 {
 893         bool result;
 894
 895         spin_lock_bh(&wl->lock);
 896         result = brcms_c_tx_flush_completed(wl->wlc);
 897         spin_unlock_bh(&wl->lock);
 898         return result;
 899 }
 900
 901 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 902                             u32 queues, bool drop)
 903 {
 904         struct brcms_info *wl = hw->priv;
 905         int ret;
 906
 907         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 908
 909         ret = wait_event_timeout(wl->tx_flush_wq,
 910                                  brcms_tx_flush_completed(wl),
 911                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 912
 913         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 914                            "ret=%d\n", jiffies_to_msecs(ret));
 915 }
 916
 917 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 918 {
 919         struct brcms_info *wl = hw->priv;
 920         u64 tsf;
 921
 922         spin_lock_bh(&wl->lock);
 923         tsf = brcms_c_tsf_get(wl->wlc);
 924         spin_unlock_bh(&wl->lock);
 925
 926         return tsf;
 927 }
 928
 929 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 930                            struct ieee80211_vif *vif, u64 tsf)
 931 {
 932         struct brcms_info *wl = hw->priv;
 933
 934         spin_lock_bh(&wl->lock);
 935         brcms_c_tsf_set(wl->wlc, tsf);
 936         spin_unlock_bh(&wl->lock);
 937 }
 938
 939 static const struct ieee80211_ops brcms_ops = {
 940         .tx = brcms_ops_tx,
 941         .start = brcms_ops_start,
 942         .stop = brcms_ops_stop,
 943         .add_interface = brcms_ops_add_interface,
 944         .remove_interface = brcms_ops_remove_interface,
 945         .config = brcms_ops_config,
 946         .bss_info_changed = brcms_ops_bss_info_changed,
 947         .configure_filter = brcms_ops_configure_filter,
 948         .sw_scan_start = brcms_ops_sw_scan_start,
 949         .sw_scan_complete = brcms_ops_sw_scan_complete,
 950         .conf_tx = brcms_ops_conf_tx,
 951         .sta_add = brcms_ops_sta_add,
 952         .ampdu_action = brcms_ops_ampdu_action,
 953         .rfkill_poll = brcms_ops_rfkill_poll,
 954         .flush = brcms_ops_flush,
 955         .get_tsf = brcms_ops_get_tsf,
 956         .set_tsf = brcms_ops_set_tsf,
 957 };
 958
 959 void brcms_dpc(unsigned long data)
 960 {
 961         struct brcms_info *wl;
 962
 963         wl = (struct brcms_info *) data;
 964
 965         spin_lock_bh(&wl->lock);
 966
 967         /* call the common second level interrupt handler */
 968         if (wl->pub->up) {
 969                 if (wl->resched) {
 970                         unsigned long flags;
 971
 972                         spin_lock_irqsave(&wl->isr_lock, flags);
 973                         brcms_c_intrsupd(wl->wlc);
 974                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 975                 }
 976
 977                 wl->resched = brcms_c_dpc(wl->wlc, true);
 978         }
 979
 980         /* brcms_c_dpc() may bring the driver down */
 981         if (!wl->pub->up)
 982                 goto done;
 983
 984         /* re-schedule dpc */
 985         if (wl->resched)
 986                 tasklet_schedule(&wl->tasklet);
 987         else
 988                 /* re-enable interrupts */
 989                 brcms_intrson(wl);
 990
 991  done:
 992         spin_unlock_bh(&wl->lock);
 993         wake_up(&wl->tx_flush_wq);
 994 }
 995
 996 static irqreturn_t brcms_isr(int irq, void *dev_id)
 997 {
 998         struct brcms_info *wl;
 999         irqreturn_t ret = IRQ_NONE;
1000
1001         wl = (struct brcms_info *) dev_id;
1002
1003         spin_lock(&wl->isr_lock);
1004
1005         /* call common first level interrupt handler */
1006         if (brcms_c_isr(wl->wlc)) {
1007                 /* schedule second level handler */
1008                 tasklet_schedule(&wl->tasklet);
1009                 ret = IRQ_HANDLED;
1010         }
1011
1012         spin_unlock(&wl->isr_lock);
1013
1014         return ret;
1015 }
1016
1017 /*
1018  * is called in brcms_pci_probe() context, therefore no locking required.
1019  */
1020 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1021 {
1022         struct brcms_info *wl = hw->priv;
1023         struct brcms_c_info *wlc = wl->wlc;
1024         struct ieee80211_supported_band *band;
1025         int has_5g = 0;
1026         u16 phy_type;
1027
1028         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1029         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1030
1031         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1032         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1033                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1034                 *band = brcms_band_2GHz_nphy_template;
1035                 if (phy_type == PHY_TYPE_LCN) {
1036                         /* Single stream */
1037                         band->ht_cap.mcs.rx_mask[1] = 0;
1038                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1039                 }
1040                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1041         } else {
1042                 return -EPERM;
1043         }
1044
1045         /* Assume all bands use the same phy.  True for 11n devices. */
1046         if (wl->pub->_nbands > 1) {
1047                 has_5g++;
1048                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1049                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1050                         *band = brcms_band_5GHz_nphy_template;
1051                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1052                 } else {
1053                         return -EPERM;
1054                 }
1055         }
1056         return 0;
1057 }
1058
1059 /*
1060  * is called in brcms_pci_probe() context, therefore no locking required.
1061  */
1062 static int ieee_hw_init(struct ieee80211_hw *hw)
1063 {
1064         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1065         ieee80211_hw_set(hw, SIGNAL_DBM);
1066         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1067
1068         hw->extra_tx_headroom = brcms_c_get_header_len();
1069         hw->queues = N_TX_QUEUES;
1070         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1071
1072         /* channel change time is dependent on chip and band  */
1073         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1074                                      BIT(NL80211_IFTYPE_AP) |
1075                                      BIT(NL80211_IFTYPE_ADHOC);
1076
1077         /*
1078          * deactivate sending probe responses by ucude, because this will
1079          * cause problems when WPS is used.
1080          *
1081          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1082          */
1083
1084         hw->rate_control_algorithm = "minstrel_ht";
1085
1086         hw->sta_data_size = 0;
1087         return ieee_hw_rate_init(hw);
1088 }
1089
1090 /**
1091  * attach to the WL device.
1092  *
1093  * Attach to the WL device identified by vendor and device parameters.
1094  * regs is a host accessible memory address pointing to WL device registers.
1095  *
1096  * is called in brcms_bcma_probe() context, therefore no locking required.
1097  */
1098 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1099 {
1100         struct brcms_info *wl = NULL;
1101         int unit, err;
1102         struct ieee80211_hw *hw;
1103         u8 perm[ETH_ALEN];
1104
1105         unit = n_adapters_found;
1106         err = 0;
1107
1108         if (unit < 0)
1109                 return NULL;
1110
1111         /* allocate private info */
1112         hw = bcma_get_drvdata(pdev);
1113         if (hw != NULL)
1114                 wl = hw->priv;
1115         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1116                 return NULL;
1117         wl->wiphy = hw->wiphy;
1118
1119         atomic_set(&wl->callbacks, 0);
1120
1121         init_waitqueue_head(&wl->tx_flush_wq);
1122
1123         /* setup the bottom half handler */
1124         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1125
1126         spin_lock_init(&wl->lock);
1127         spin_lock_init(&wl->isr_lock);
1128
1129         /* common load-time initialization */
1130         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1131         if (!wl->wlc) {
1132                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1133                           KBUILD_MODNAME, err);
1134                 goto fail;
1135         }
1136         wl->pub = brcms_c_pub(wl->wlc);
1137
1138         wl->pub->ieee_hw = hw;
1139
1140         /* register our interrupt handler */
1141         if (request_irq(pdev->irq, brcms_isr,
1142                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1143                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1144                 goto fail;
1145         }
1146         wl->irq = pdev->irq;
1147
1148         /* register module */
1149         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1150
1151         if (ieee_hw_init(hw)) {
1152                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1153                           __func__);
1154                 goto fail;
1155         }
1156
1157         brcms_c_regd_init(wl->wlc);
1158
1159         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1160         if (WARN_ON(!is_valid_ether_addr(perm)))
1161                 goto fail;
1162         SET_IEEE80211_PERM_ADDR(hw, perm);
1163
1164         err = ieee80211_register_hw(hw);
1165         if (err)
1166                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1167                           "%d\n", __func__, err);
1168
1169         if (wl->pub->srom_ccode[0] &&
1170             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1171                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1172
1173         brcms_debugfs_attach(wl->pub);
1174         brcms_debugfs_create_files(wl->pub);
1175         n_adapters_found++;
1176         return wl;
1177
1178 fail:
1179         brcms_free(wl);
1180         return NULL;
1181 }
1182
1183
1184
1185 /**
1186  * determines if a device is a WL device, and if so, attaches it.
1187  *
1188  * This function determines if a device pointed to by pdev is a WL device,
1189  * and if so, performs a brcms_attach() on it.
1190  *
1191  * Perimeter lock is initialized in the course of this function.
1192  */
1193 static int brcms_bcma_probe(struct bcma_device *pdev)
1194 {
1195         struct brcms_info *wl;
1196         struct ieee80211_hw *hw;
1197
1198         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1199                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1200                  pdev->irq);
1201
1202         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1203             (pdev->id.id != BCMA_CORE_80211))
1204                 return -ENODEV;
1205
1206         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1207         if (!hw) {
1208                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1209                 return -ENOMEM;
1210         }
1211
1212         SET_IEEE80211_DEV(hw, &pdev->dev);
1213
1214         bcma_set_drvdata(pdev, hw);
1215
1216         memset(hw->priv, 0, sizeof(*wl));
1217
1218         wl = brcms_attach(pdev);
1219         if (!wl) {
1220                 pr_err("%s: brcms_attach failed!\n", __func__);
1221                 return -ENODEV;
1222         }
1223         brcms_led_register(wl);
1224
1225         return 0;
1226 }
1227
1228 static int brcms_suspend(struct bcma_device *pdev)
1229 {
1230         struct brcms_info *wl;
1231         struct ieee80211_hw *hw;
1232
1233         hw = bcma_get_drvdata(pdev);
1234         wl = hw->priv;
1235         if (!wl) {
1236                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1237                        __func__);
1238                 return -ENODEV;
1239         }
1240
1241         /* only need to flag hw is down for proper resume */
1242         spin_lock_bh(&wl->lock);
1243         wl->pub->hw_up = false;
1244         spin_unlock_bh(&wl->lock);
1245
1246         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1247
1248         return 0;
1249 }
1250
1251 static int brcms_resume(struct bcma_device *pdev)
1252 {
1253         return 0;
1254 }
1255
1256 static struct bcma_driver brcms_bcma_driver = {
1257         .name     = KBUILD_MODNAME,
1258         .probe    = brcms_bcma_probe,
1259         .suspend  = brcms_suspend,
1260         .resume   = brcms_resume,
1261         .remove   = brcms_remove,
1262         .id_table = brcms_coreid_table,
1263 };
1264
1265 /**
1266  * This is the main entry point for the brcmsmac driver.
1267  *
1268  * This function is scheduled upon module initialization and
1269  * does the driver registration, which result in brcms_bcma_probe()
1270  * call resulting in the driver bringup.
1271  */
1272 static void brcms_driver_init(struct work_struct *work)
1273 {
1274         int error;
1275
1276         error = bcma_driver_register(&brcms_bcma_driver);
1277         if (error)
1278                 pr_err("%s: register returned %d\n", __func__, error);
1279 }
1280
1281 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1282
1283 static int __init brcms_module_init(void)
1284 {
1285         brcms_debugfs_init();
1286         if (!schedule_work(&brcms_driver_work))
1287                 return -EBUSY;
1288
1289         return 0;
1290 }
1291
1292 /**
1293  * This function unloads the brcmsmac driver from the system.
1294  *
1295  * This function unconditionally unloads the brcmsmac driver module from the
1296  * system.
1297  *
1298  */
1299 static void __exit brcms_module_exit(void)
1300 {
1301         cancel_work_sync(&brcms_driver_work);
1302         bcma_driver_unregister(&brcms_bcma_driver);
1303         brcms_debugfs_exit();
1304 }
1305
1306 module_init(brcms_module_init);
1307 module_exit(brcms_module_exit);
1308
1309 /*
1310  * precondition: perimeter lock has been acquired
1311  */
1312 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1313                          bool state, int prio)
1314 {
1315         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1316 }
1317
1318 /*
1319  * precondition: perimeter lock has been acquired
1320  */
1321 void brcms_init(struct brcms_info *wl)
1322 {
1323         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1324                        wl->pub->unit);
1325         brcms_reset(wl);
1326         brcms_c_init(wl->wlc, wl->mute_tx);
1327 }
1328
1329 /*
1330  * precondition: perimeter lock has been acquired
1331  */
1332 uint brcms_reset(struct brcms_info *wl)
1333 {
1334         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1335         brcms_c_reset(wl->wlc);
1336
1337         /* dpc will not be rescheduled */
1338         wl->resched = false;
1339
1340         /* inform publicly that interface is down */
1341         wl->pub->up = false;
1342
1343         return 0;
1344 }
1345
1346 void brcms_fatal_error(struct brcms_info *wl)
1347 {
1348         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1349                   wl->wlc->pub->unit);
1350         brcms_reset(wl);
1351         ieee80211_restart_hw(wl->pub->ieee_hw);
1352 }
1353
1354 /*
1355  * These are interrupt on/off entry points. Disable interrupts
1356  * during interrupt state transition.
1357  */
1358 void brcms_intrson(struct brcms_info *wl)
1359 {
1360         unsigned long flags;
1361
1362         spin_lock_irqsave(&wl->isr_lock, flags);
1363         brcms_c_intrson(wl->wlc);
1364         spin_unlock_irqrestore(&wl->isr_lock, flags);
1365 }
1366
1367 u32 brcms_intrsoff(struct brcms_info *wl)
1368 {
1369         unsigned long flags;
1370         u32 status;
1371
1372         spin_lock_irqsave(&wl->isr_lock, flags);
1373         status = brcms_c_intrsoff(wl->wlc);
1374         spin_unlock_irqrestore(&wl->isr_lock, flags);
1375         return status;
1376 }
1377
1378 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1379 {
1380         unsigned long flags;
1381
1382         spin_lock_irqsave(&wl->isr_lock, flags);
1383         brcms_c_intrsrestore(wl->wlc, macintmask);
1384         spin_unlock_irqrestore(&wl->isr_lock, flags);
1385 }
1386
1387 /*
1388  * precondition: perimeter lock has been acquired
1389  */
1390 int brcms_up(struct brcms_info *wl)
1391 {
1392         int error = 0;
1393
1394         if (wl->pub->up)
1395                 return 0;
1396
1397         error = brcms_c_up(wl->wlc);
1398
1399         return error;
1400 }
1401
1402 /*
1403  * precondition: perimeter lock has been acquired
1404  */
1405 void brcms_down(struct brcms_info *wl)
1406 {
1407         uint callbacks, ret_val = 0;
1408
1409         /* call common down function */
1410         ret_val = brcms_c_down(wl->wlc);
1411         callbacks = atomic_read(&wl->callbacks) - ret_val;
1412
1413         /* wait for down callbacks to complete */
1414         spin_unlock_bh(&wl->lock);
1415
1416         /* For HIGH_only driver, it's important to actually schedule other work,
1417          * not just spin wait since everything runs at schedule level
1418          */
1419         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1420
1421         spin_lock_bh(&wl->lock);
1422 }
1423
1424 /*
1425 * precondition: perimeter lock is not acquired
1426  */
1427 static void _brcms_timer(struct work_struct *work)
1428 {
1429         struct brcms_timer *t = container_of(work, struct brcms_timer,
1430                                              dly_wrk.work);
1431
1432         spin_lock_bh(&t->wl->lock);
1433
1434         if (t->set) {
1435                 if (t->periodic) {
1436                         atomic_inc(&t->wl->callbacks);
1437                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1438                                                      &t->dly_wrk,
1439                                                      msecs_to_jiffies(t->ms));
1440                 } else {
1441                         t->set = false;
1442                 }
1443
1444                 t->fn(t->arg);
1445         }
1446
1447         atomic_dec(&t->wl->callbacks);
1448
1449         spin_unlock_bh(&t->wl->lock);
1450 }
1451
1452 /*
1453  * Adds a timer to the list. Caller supplies a timer function.
1454  * Is called from wlc.
1455  *
1456  * precondition: perimeter lock has been acquired
1457  */
1458 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1459                                      void (*fn) (void *arg),
1460                                      void *arg, const char *name)
1461 {
1462         struct brcms_timer *t;
1463
1464         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1465         if (!t)
1466                 return NULL;
1467
1468         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1469         t->wl = wl;
1470         t->fn = fn;
1471         t->arg = arg;
1472         t->next = wl->timers;
1473         wl->timers = t;
1474
1475 #ifdef DEBUG
1476         t->name = kstrdup(name, GFP_ATOMIC);
1477 #endif
1478
1479         return t;
1480 }
1481
1482 /*
1483  * adds only the kernel timer since it's going to be more accurate
1484  * as well as it's easier to make it periodic
1485  *
1486  * precondition: perimeter lock has been acquired
1487  */
1488 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1489 {
1490         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1491
1492 #ifdef DEBUG
1493         if (t->set)
1494                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1495                                "%s: Already set. Name: %s, per %d\n",
1496                                __func__, t->name, periodic);
1497 #endif
1498         t->ms = ms;
1499         t->periodic = (bool) periodic;
1500         if (!t->set) {
1501                 t->set = true;
1502                 atomic_inc(&t->wl->callbacks);
1503         }
1504
1505         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1506 }
1507
1508 /*
1509  * return true if timer successfully deleted, false if still pending
1510  *
1511  * precondition: perimeter lock has been acquired
1512  */
1513 bool brcms_del_timer(struct brcms_timer *t)
1514 {
1515         if (t->set) {
1516                 t->set = false;
1517                 if (!cancel_delayed_work(&t->dly_wrk))
1518                         return false;
1519
1520                 atomic_dec(&t->wl->callbacks);
1521         }
1522
1523         return true;
1524 }
1525
1526 /*
1527  * precondition: perimeter lock has been acquired
1528  */
1529 void brcms_free_timer(struct brcms_timer *t)
1530 {
1531         struct brcms_info *wl = t->wl;
1532         struct brcms_timer *tmp;
1533
1534         /* delete the timer in case it is active */
1535         brcms_del_timer(t);
1536
1537         if (wl->timers == t) {
1538                 wl->timers = wl->timers->next;
1539 #ifdef DEBUG
1540                 kfree(t->name);
1541 #endif
1542                 kfree(t);
1543                 return;
1544
1545         }
1546
1547         tmp = wl->timers;
1548         while (tmp) {
1549                 if (tmp->next == t) {
1550                         tmp->next = t->next;
1551 #ifdef DEBUG
1552                         kfree(t->name);
1553 #endif
1554                         kfree(t);
1555                         return;
1556                 }
1557                 tmp = tmp->next;
1558         }
1559
1560 }
1561
1562 /*
1563  * precondition: perimeter lock has been acquired
1564  */
1565 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1566 {
1567         int i, entry;
1568         const u8 *pdata;
1569         struct firmware_hdr *hdr;
1570         for (i = 0; i < wl->fw.fw_cnt; i++) {
1571                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1572                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1573                      entry++, hdr++) {
1574                         u32 len = le32_to_cpu(hdr->len);
1575                         if (le32_to_cpu(hdr->idx) == idx) {
1576                                 pdata = wl->fw.fw_bin[i]->data +
1577                                         le32_to_cpu(hdr->offset);
1578                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1579                                 if (*pbuf == NULL)
1580                                         goto fail;
1581
1582                                 return 0;
1583                         }
1584                 }
1585         }
1586         brcms_err(wl->wlc->hw->d11core,
1587                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1588         *pbuf = NULL;
1589 fail:
1590         return -ENODATA;
1591 }
1592
1593 /*
1594  * Precondition: Since this function is called in brcms_bcma_probe() context,
1595  * no locking is required.
1596  */
1597 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1598 {
1599         int i, entry;
1600         const u8 *pdata;
1601         struct firmware_hdr *hdr;
1602         for (i = 0; i < wl->fw.fw_cnt; i++) {
1603                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1604                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1605                      entry++, hdr++) {
1606                         if (le32_to_cpu(hdr->idx) == idx) {
1607                                 pdata = wl->fw.fw_bin[i]->data +
1608                                         le32_to_cpu(hdr->offset);
1609                                 if (le32_to_cpu(hdr->len) != 4) {
1610                                         brcms_err(wl->wlc->hw->d11core,
1611                                                   "ERROR: fw hdr len\n");
1612                                         return -ENOMSG;
1613                                 }
1614                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1615                                 return 0;
1616                         }
1617                 }
1618         }
1619         brcms_err(wl->wlc->hw->d11core,
1620                   "ERROR: ucode tag:%d can not be found!\n", idx);
1621         return -ENOMSG;
1622 }
1623
1624 /*
1625  * precondition: can both be called locked and unlocked
1626  */
1627 void brcms_ucode_free_buf(void *p)
1628 {
1629         kfree(p);
1630 }
1631
1632 /*
1633  * checks validity of all firmware images loaded from user space
1634  *
1635  * Precondition: Since this function is called in brcms_bcma_probe() context,
1636  * no locking is required.
1637  */
1638 int brcms_check_firmwares(struct brcms_info *wl)
1639 {
1640         int i;
1641         int entry;
1642         int rc = 0;
1643         const struct firmware *fw;
1644         const struct firmware *fw_hdr;
1645         struct firmware_hdr *ucode_hdr;
1646         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1647                 fw =  wl->fw.fw_bin[i];
1648                 fw_hdr = wl->fw.fw_hdr[i];
1649                 if (fw == NULL && fw_hdr == NULL) {
1650                         break;
1651                 } else if (fw == NULL || fw_hdr == NULL) {
1652                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1653                                   __func__);
1654                         rc = -EBADF;
1655                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1656                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1657                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1658                                 sizeof(struct firmware_hdr));
1659                         rc = -EBADF;
1660                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1661                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1662                                   __func__, fw->size);
1663                         rc = -EBADF;
1664                 } else {
1665                         /* check if ucode section overruns firmware image */
1666                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1667                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1668                              !rc; entry++, ucode_hdr++) {
1669                                 if (le32_to_cpu(ucode_hdr->offset) +
1670                                     le32_to_cpu(ucode_hdr->len) >
1671                                     fw->size) {
1672                                         wiphy_err(wl->wiphy,
1673                                                   "%s: conflicting bin/hdr\n",
1674                                                   __func__);
1675                                         rc = -EBADF;
1676                                 }
1677                         }
1678                 }
1679         }
1680         if (rc == 0 && wl->fw.fw_cnt != i) {
1681                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1682                         wl->fw.fw_cnt);
1683                 rc = -EBADF;
1684         }
1685         return rc;
1686 }
1687
1688 /*
1689  * precondition: perimeter lock has been acquired
1690  */
1691 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1692 {
1693         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1694
1695         spin_unlock_bh(&wl->lock);
1696         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1697         if (blocked)
1698                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1699         spin_lock_bh(&wl->lock);
1700         return blocked;
1701 }