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, 0644);
 111 #endif
 112
 113 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 114         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 115         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(5, 2432, 0),
 119         CHAN2GHZ(6, 2437, 0),
 120         CHAN2GHZ(7, 2442, 0),
 121         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(12, 2467,
 126                  IEEE80211_CHAN_NO_IR |
 127                  IEEE80211_CHAN_NO_HT40PLUS),
 128         CHAN2GHZ(13, 2472,
 129                  IEEE80211_CHAN_NO_IR |
 130                  IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN2GHZ(14, 2484,
 132                  IEEE80211_CHAN_NO_IR |
 133                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 134                  IEEE80211_CHAN_NO_OFDM)
 135 };
 136
 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 138         /* UNII-1 */
 139         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 140         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 142         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 143         /* UNII-2 */
 144         CHAN5GHZ(52,
 145                  IEEE80211_CHAN_RADAR |
 146                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 147         CHAN5GHZ(56,
 148                  IEEE80211_CHAN_RADAR |
 149                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 150         CHAN5GHZ(60,
 151                  IEEE80211_CHAN_RADAR |
 152                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 153         CHAN5GHZ(64,
 154                  IEEE80211_CHAN_RADAR |
 155                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 156         /* MID */
 157         CHAN5GHZ(100,
 158                  IEEE80211_CHAN_RADAR |
 159                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 160         CHAN5GHZ(104,
 161                  IEEE80211_CHAN_RADAR |
 162                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 163         CHAN5GHZ(108,
 164                  IEEE80211_CHAN_RADAR |
 165                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 166         CHAN5GHZ(112,
 167                  IEEE80211_CHAN_RADAR |
 168                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 169         CHAN5GHZ(116,
 170                  IEEE80211_CHAN_RADAR |
 171                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 172         CHAN5GHZ(120,
 173                  IEEE80211_CHAN_RADAR |
 174                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 175         CHAN5GHZ(124,
 176                  IEEE80211_CHAN_RADAR |
 177                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 178         CHAN5GHZ(128,
 179                  IEEE80211_CHAN_RADAR |
 180                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 181         CHAN5GHZ(132,
 182                  IEEE80211_CHAN_RADAR |
 183                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(136,
 185                  IEEE80211_CHAN_RADAR |
 186                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(140,
 188                  IEEE80211_CHAN_RADAR |
 189                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 190                  IEEE80211_CHAN_NO_HT40MINUS),
 191         /* UNII-3 */
 192         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 193         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 194         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 195         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 196         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 197 };
 198
 199 /*
 200  * The rate table is used for both 2.4G and 5G rates. The
 201  * latter being a subset as it does not support CCK rates.
 202  */
 203 static struct ieee80211_rate legacy_ratetable[] = {
 204         RATE(10, 0),
 205         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 206         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(60, 0),
 209         RATE(90, 0),
 210         RATE(120, 0),
 211         RATE(180, 0),
 212         RATE(240, 0),
 213         RATE(360, 0),
 214         RATE(480, 0),
 215         RATE(540, 0),
 216 };
 217
 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 219         .band = NL80211_BAND_2GHZ,
 220         .channels = brcms_2ghz_chantable,
 221         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 222         .bitrates = legacy_ratetable,
 223         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 224         .ht_cap = {
 225                    /* from include/linux/ieee80211.h */
 226                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 227                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 228                    .ht_supported = true,
 229                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 230                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 231                    .mcs = {
 232                            /* placeholders for now */
 233                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 234                            .rx_highest = cpu_to_le16(500),
 235                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 236                    }
 237 };
 238
 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 240         .band = NL80211_BAND_5GHZ,
 241         .channels = brcms_5ghz_nphy_chantable,
 242         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 243         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 244         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 245                         BRCMS_LEGACY_5G_RATE_OFFSET,
 246         .ht_cap = {
 247                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 248                           IEEE80211_HT_CAP_SGI_40,
 249                    .ht_supported = true,
 250                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 251                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 252                    .mcs = {
 253                            /* placeholders for now */
 254                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 255                            .rx_highest = cpu_to_le16(500),
 256                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 257                    }
 258 };
 259
 260 /* flags the given rate in rateset as requested */
 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 262 {
 263         u32 i;
 264
 265         for (i = 0; i < rs->count; i++) {
 266                 if (rate != (rs->rates[i] & 0x7f))
 267                         continue;
 268
 269                 if (is_br)
 270                         rs->rates[i] |= BRCMS_RATE_FLAG;
 271                 else
 272                         rs->rates[i] &= BRCMS_RATE_MASK;
 273                 return;
 274         }
 275 }
 276
 277 /**
 278  * This function frees the WL per-device resources.
 279  *
 280  * This function frees resources owned by the WL device pointed to
 281  * by the wl parameter.
 282  *
 283  * precondition: can both be called locked and unlocked
 284  *
 285  */
 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->wlc->vif = vif;
 505         wl->mute_tx = false;
 506         brcms_c_mute(wl->wlc, false);
 507         if (vif->type == NL80211_IFTYPE_STATION)
 508                 brcms_c_start_station(wl->wlc, vif->addr);
 509         else if (vif->type == NL80211_IFTYPE_AP)
 510                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 511                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 512         else if (vif->type == NL80211_IFTYPE_ADHOC)
 513                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 514         spin_unlock_bh(&wl->lock);
 515
 516         return 0;
 517 }
 518
 519 static void
 520 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 521 {
 522         struct brcms_info *wl = hw->priv;
 523
 524         spin_lock_bh(&wl->lock);
 525         wl->wlc->vif = NULL;
 526         spin_unlock_bh(&wl->lock);
 527 }
 528
 529 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 530 {
 531         struct ieee80211_conf *conf = &hw->conf;
 532         struct brcms_info *wl = hw->priv;
 533         struct bcma_device *core = wl->wlc->hw->d11core;
 534         int err = 0;
 535         int new_int;
 536
 537         spin_lock_bh(&wl->lock);
 538         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 539                 brcms_c_set_beacon_listen_interval(wl->wlc,
 540                                                    conf->listen_interval);
 541         }
 542         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 543                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 544                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 545                                "true" : "false");
 546         if (changed & IEEE80211_CONF_CHANGE_PS)
 547                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 548                           __func__, conf->flags & IEEE80211_CONF_PS ?
 549                           "true" : "false");
 550
 551         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 552                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 553                 if (err < 0) {
 554                         brcms_err(core, "%s: Error setting power_level\n",
 555                                   __func__);
 556                         goto config_out;
 557                 }
 558                 new_int = brcms_c_get_tx_power(wl->wlc);
 559                 if (new_int != conf->power_level)
 560                         brcms_err(core,
 561                                   "%s: Power level req != actual, %d %d\n",
 562                                   __func__, conf->power_level,
 563                                   new_int);
 564         }
 565         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 566                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 567                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 568                         err = brcms_c_set_channel(wl->wlc,
 569                                                   conf->chandef.chan->hw_value);
 570                 else
 571                         err = -ENOTSUPP;
 572         }
 573         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 574                 err = brcms_c_set_rate_limit(wl->wlc,
 575                                              conf->short_frame_max_tx_count,
 576                                              conf->long_frame_max_tx_count);
 577
 578  config_out:
 579         spin_unlock_bh(&wl->lock);
 580         return err;
 581 }
 582
 583 static void
 584 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 585                         struct ieee80211_vif *vif,
 586                         struct ieee80211_bss_conf *info, u32 changed)
 587 {
 588         struct brcms_info *wl = hw->priv;
 589         struct bcma_device *core = wl->wlc->hw->d11core;
 590
 591         if (changed & BSS_CHANGED_ASSOC) {
 592                 /* association status changed (associated/disassociated)
 593                  * also implies a change in the AID.
 594                  */
 595                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 596                           __func__, info->assoc ? "" : "dis");
 597                 spin_lock_bh(&wl->lock);
 598                 brcms_c_associate_upd(wl->wlc, info->assoc);
 599                 spin_unlock_bh(&wl->lock);
 600         }
 601         if (changed & BSS_CHANGED_ERP_SLOT) {
 602                 s8 val;
 603
 604                 /* slot timing changed */
 605                 if (info->use_short_slot)
 606                         val = 1;
 607                 else
 608                         val = 0;
 609                 spin_lock_bh(&wl->lock);
 610                 brcms_c_set_shortslot_override(wl->wlc, val);
 611                 spin_unlock_bh(&wl->lock);
 612         }
 613
 614         if (changed & BSS_CHANGED_HT) {
 615                 /* 802.11n parameters changed */
 616                 u16 mode = info->ht_operation_mode;
 617
 618                 spin_lock_bh(&wl->lock);
 619                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 620                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 621                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 622                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 623                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 624                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 625                 spin_unlock_bh(&wl->lock);
 626         }
 627         if (changed & BSS_CHANGED_BASIC_RATES) {
 628                 struct ieee80211_supported_band *bi;
 629                 u32 br_mask, i;
 630                 u16 rate;
 631                 struct brcm_rateset rs;
 632                 int error;
 633
 634                 /* retrieve the current rates */
 635                 spin_lock_bh(&wl->lock);
 636                 brcms_c_get_current_rateset(wl->wlc, &rs);
 637                 spin_unlock_bh(&wl->lock);
 638
 639                 br_mask = info->basic_rates;
 640                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 641                 for (i = 0; i < bi->n_bitrates; i++) {
 642                         /* convert to internal rate value */
 643                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 644
 645                         /* set/clear basic rate flag */
 646                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 647                         br_mask >>= 1;
 648                 }
 649
 650                 /* update the rate set */
 651                 spin_lock_bh(&wl->lock);
 652                 error = brcms_c_set_rateset(wl->wlc, &rs);
 653                 spin_unlock_bh(&wl->lock);
 654                 if (error)
 655                         brcms_err(core, "changing basic rates failed: %d\n",
 656                                   error);
 657         }
 658         if (changed & BSS_CHANGED_BEACON_INT) {
 659                 /* Beacon interval changed */
 660                 spin_lock_bh(&wl->lock);
 661                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 662                 spin_unlock_bh(&wl->lock);
 663         }
 664         if (changed & BSS_CHANGED_BSSID) {
 665                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 666                 spin_lock_bh(&wl->lock);
 667                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 668                 spin_unlock_bh(&wl->lock);
 669         }
 670         if (changed & BSS_CHANGED_SSID) {
 671                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 672                 spin_lock_bh(&wl->lock);
 673                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 674                 spin_unlock_bh(&wl->lock);
 675         }
 676         if (changed & BSS_CHANGED_BEACON) {
 677                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 678                 struct sk_buff *beacon;
 679                 u16 tim_offset = 0;
 680
 681                 spin_lock_bh(&wl->lock);
 682                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 683                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 684                                        info->dtim_period);
 685                 spin_unlock_bh(&wl->lock);
 686         }
 687
 688         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 689                 struct sk_buff *probe_resp;
 690
 691                 spin_lock_bh(&wl->lock);
 692                 probe_resp = ieee80211_proberesp_get(hw, vif);
 693                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 694                 spin_unlock_bh(&wl->lock);
 695         }
 696
 697         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 698                 /* Beaconing should be enabled/disabled (beaconing modes) */
 699                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 700                           info->enable_beacon ? "true" : "false");
 701                 if (info->enable_beacon &&
 702                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 703                         brcms_c_enable_probe_resp(wl->wlc, true);
 704                 } else {
 705                         brcms_c_enable_probe_resp(wl->wlc, false);
 706                 }
 707         }
 708
 709         if (changed & BSS_CHANGED_CQM) {
 710                 /* Connection quality monitor config changed */
 711                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 712                           " (implement)\n", __func__, info->cqm_rssi_thold,
 713                           info->cqm_rssi_hyst);
 714         }
 715
 716         if (changed & BSS_CHANGED_IBSS) {
 717                 /* IBSS join status changed */
 718                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 719                           __func__, info->ibss_joined ? "true" : "false");
 720         }
 721
 722         if (changed & BSS_CHANGED_ARP_FILTER) {
 723                 /* Hardware ARP filter address list or state changed */
 724                 brcms_err(core, "%s: arp filtering: %d addresses"
 725                           " (implement)\n", __func__, info->arp_addr_cnt);
 726         }
 727
 728         if (changed & BSS_CHANGED_QOS) {
 729                 /*
 730                  * QoS for this association was enabled/disabled.
 731                  * Note that it is only ever disabled for station mode.
 732                  */
 733                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 734                           __func__, info->qos ? "true" : "false");
 735         }
 736         return;
 737 }
 738
 739 static void
 740 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 741                         unsigned int changed_flags,
 742                         unsigned int *total_flags, u64 multicast)
 743 {
 744         struct brcms_info *wl = hw->priv;
 745         struct bcma_device *core = wl->wlc->hw->d11core;
 746
 747         changed_flags &= MAC_FILTERS;
 748         *total_flags &= MAC_FILTERS;
 749
 750         if (changed_flags & FIF_ALLMULTI)
 751                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 752         if (changed_flags & FIF_FCSFAIL)
 753                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 754         if (changed_flags & FIF_CONTROL)
 755                 brcms_dbg_info(core, "FIF_CONTROL\n");
 756         if (changed_flags & FIF_OTHER_BSS)
 757                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 758         if (changed_flags & FIF_PSPOLL)
 759                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 760         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 761                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 762
 763         spin_lock_bh(&wl->lock);
 764         brcms_c_mac_promisc(wl->wlc, *total_flags);
 765         spin_unlock_bh(&wl->lock);
 766         return;
 767 }
 768
 769 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 770                                     struct ieee80211_vif *vif,
 771                                     const u8 *mac_addr)
 772 {
 773         struct brcms_info *wl = hw->priv;
 774         spin_lock_bh(&wl->lock);
 775         brcms_c_scan_start(wl->wlc);
 776         spin_unlock_bh(&wl->lock);
 777         return;
 778 }
 779
 780 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 781                                        struct ieee80211_vif *vif)
 782 {
 783         struct brcms_info *wl = hw->priv;
 784         spin_lock_bh(&wl->lock);
 785         brcms_c_scan_stop(wl->wlc);
 786         spin_unlock_bh(&wl->lock);
 787         return;
 788 }
 789
 790 static int
 791 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 792                   const struct ieee80211_tx_queue_params *params)
 793 {
 794         struct brcms_info *wl = hw->priv;
 795
 796         spin_lock_bh(&wl->lock);
 797         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 798         spin_unlock_bh(&wl->lock);
 799
 800         return 0;
 801 }
 802
 803 static int
 804 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 805                struct ieee80211_sta *sta)
 806 {
 807         struct brcms_info *wl = hw->priv;
 808         struct scb *scb = &wl->wlc->pri_scb;
 809
 810         brcms_c_init_scb(scb);
 811
 812         wl->pub->global_ampdu = &(scb->scb_ampdu);
 813         wl->pub->global_ampdu->scb = scb;
 814         wl->pub->global_ampdu->max_pdu = 16;
 815
 816         /*
 817          * minstrel_ht initiates addBA on our behalf by calling
 818          * ieee80211_start_tx_ba_session()
 819          */
 820         return 0;
 821 }
 822
 823 static int
 824 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 825                     struct ieee80211_vif *vif,
 826                     struct ieee80211_ampdu_params *params)
 827 {
 828         struct brcms_info *wl = hw->priv;
 829         struct scb *scb = &wl->wlc->pri_scb;
 830         int status;
 831         struct ieee80211_sta *sta = params->sta;
 832         enum ieee80211_ampdu_mlme_action action = params->action;
 833         u16 tid = params->tid;
 834         u8 buf_size = params->buf_size;
 835
 836         if (WARN_ON(scb->magic != SCB_MAGIC))
 837                 return -EIDRM;
 838         switch (action) {
 839         case IEEE80211_AMPDU_RX_START:
 840                 break;
 841         case IEEE80211_AMPDU_RX_STOP:
 842                 break;
 843         case IEEE80211_AMPDU_TX_START:
 844                 spin_lock_bh(&wl->lock);
 845                 status = brcms_c_aggregatable(wl->wlc, tid);
 846                 spin_unlock_bh(&wl->lock);
 847                 if (!status) {
 848                         brcms_dbg_ht(wl->wlc->hw->d11core,
 849                                      "START: tid %d is not agg\'able\n", tid);
 850                         return -EINVAL;
 851                 }
 852                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 853                 break;
 854
 855         case IEEE80211_AMPDU_TX_STOP_CONT:
 856         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 857         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 858                 spin_lock_bh(&wl->lock);
 859                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 860                 spin_unlock_bh(&wl->lock);
 861                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 862                 break;
 863         case IEEE80211_AMPDU_TX_OPERATIONAL:
 864                 /*
 865                  * BA window size from ADDBA response ('buf_size') defines how
 866                  * many outstanding MPDUs are allowed for the BA stream by
 867                  * recipient and traffic class. 'ampdu_factor' gives maximum
 868                  * AMPDU size.
 869                  */
 870                 spin_lock_bh(&wl->lock);
 871                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 872                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 873                          sta->ht_cap.ampdu_factor)) - 1);
 874                 spin_unlock_bh(&wl->lock);
 875                 /* Power save wakeup */
 876                 break;
 877         default:
 878                 brcms_err(wl->wlc->hw->d11core,
 879                           "%s: Invalid command, ignoring\n", __func__);
 880         }
 881
 882         return 0;
 883 }
 884
 885 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 886 {
 887         struct brcms_info *wl = hw->priv;
 888         bool blocked;
 889
 890         spin_lock_bh(&wl->lock);
 891         blocked = brcms_c_check_radio_disabled(wl->wlc);
 892         spin_unlock_bh(&wl->lock);
 893
 894         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 895 }
 896
 897 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 898 {
 899         bool result;
 900
 901         spin_lock_bh(&wl->lock);
 902         result = brcms_c_tx_flush_completed(wl->wlc);
 903         spin_unlock_bh(&wl->lock);
 904         return result;
 905 }
 906
 907 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 908                             u32 queues, bool drop)
 909 {
 910         struct brcms_info *wl = hw->priv;
 911         int ret;
 912
 913         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 914
 915         ret = wait_event_timeout(wl->tx_flush_wq,
 916                                  brcms_tx_flush_completed(wl),
 917                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 918
 919         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 920                            "ret=%d\n", jiffies_to_msecs(ret));
 921 }
 922
 923 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 924 {
 925         struct brcms_info *wl = hw->priv;
 926         u64 tsf;
 927
 928         spin_lock_bh(&wl->lock);
 929         tsf = brcms_c_tsf_get(wl->wlc);
 930         spin_unlock_bh(&wl->lock);
 931
 932         return tsf;
 933 }
 934
 935 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 936                            struct ieee80211_vif *vif, u64 tsf)
 937 {
 938         struct brcms_info *wl = hw->priv;
 939
 940         spin_lock_bh(&wl->lock);
 941         brcms_c_tsf_set(wl->wlc, tsf);
 942         spin_unlock_bh(&wl->lock);
 943 }
 944
 945 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 946                                  struct ieee80211_sta *sta, bool set)
 947 {
 948         struct brcms_info *wl = hw->priv;
 949         struct sk_buff *beacon = NULL;
 950         u16 tim_offset = 0;
 951
 952         spin_lock_bh(&wl->lock);
 953         if (wl->wlc->vif)
 954                 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 955                                                   &tim_offset, NULL);
 956         if (beacon)
 957                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 958                                        wl->wlc->vif->bss_conf.dtim_period);
 959         spin_unlock_bh(&wl->lock);
 960
 961         return 0;
 962 }
 963
 964 static const struct ieee80211_ops brcms_ops = {
 965         .tx = brcms_ops_tx,
 966         .start = brcms_ops_start,
 967         .stop = brcms_ops_stop,
 968         .add_interface = brcms_ops_add_interface,
 969         .remove_interface = brcms_ops_remove_interface,
 970         .config = brcms_ops_config,
 971         .bss_info_changed = brcms_ops_bss_info_changed,
 972         .configure_filter = brcms_ops_configure_filter,
 973         .sw_scan_start = brcms_ops_sw_scan_start,
 974         .sw_scan_complete = brcms_ops_sw_scan_complete,
 975         .conf_tx = brcms_ops_conf_tx,
 976         .sta_add = brcms_ops_sta_add,
 977         .ampdu_action = brcms_ops_ampdu_action,
 978         .rfkill_poll = brcms_ops_rfkill_poll,
 979         .flush = brcms_ops_flush,
 980         .get_tsf = brcms_ops_get_tsf,
 981         .set_tsf = brcms_ops_set_tsf,
 982         .set_tim = brcms_ops_beacon_set_tim,
 983 };
 984
 985 void brcms_dpc(unsigned long data)
 986 {
 987         struct brcms_info *wl;
 988
 989         wl = (struct brcms_info *) data;
 990
 991         spin_lock_bh(&wl->lock);
 992
 993         /* call the common second level interrupt handler */
 994         if (wl->pub->up) {
 995                 if (wl->resched) {
 996                         unsigned long flags;
 997
 998                         spin_lock_irqsave(&wl->isr_lock, flags);
 999                         brcms_c_intrsupd(wl->wlc);
1000                         spin_unlock_irqrestore(&wl->isr_lock, flags);
1001                 }
1002
1003                 wl->resched = brcms_c_dpc(wl->wlc, true);
1004         }
1005
1006         /* brcms_c_dpc() may bring the driver down */
1007         if (!wl->pub->up)
1008                 goto done;
1009
1010         /* re-schedule dpc */
1011         if (wl->resched)
1012                 tasklet_schedule(&wl->tasklet);
1013         else
1014                 /* re-enable interrupts */
1015                 brcms_intrson(wl);
1016
1017  done:
1018         spin_unlock_bh(&wl->lock);
1019         wake_up(&wl->tx_flush_wq);
1020 }
1021
1022 static irqreturn_t brcms_isr(int irq, void *dev_id)
1023 {
1024         struct brcms_info *wl;
1025         irqreturn_t ret = IRQ_NONE;
1026
1027         wl = (struct brcms_info *) dev_id;
1028
1029         spin_lock(&wl->isr_lock);
1030
1031         /* call common first level interrupt handler */
1032         if (brcms_c_isr(wl->wlc)) {
1033                 /* schedule second level handler */
1034                 tasklet_schedule(&wl->tasklet);
1035                 ret = IRQ_HANDLED;
1036         }
1037
1038         spin_unlock(&wl->isr_lock);
1039
1040         return ret;
1041 }
1042
1043 /*
1044  * is called in brcms_pci_probe() context, therefore no locking required.
1045  */
1046 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1047 {
1048         struct brcms_info *wl = hw->priv;
1049         struct brcms_c_info *wlc = wl->wlc;
1050         struct ieee80211_supported_band *band;
1051         int has_5g = 0;
1052         u16 phy_type;
1053
1054         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1055         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1056
1057         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1058         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1059                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1060                 *band = brcms_band_2GHz_nphy_template;
1061                 if (phy_type == PHY_TYPE_LCN) {
1062                         /* Single stream */
1063                         band->ht_cap.mcs.rx_mask[1] = 0;
1064                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1065                 }
1066                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1067         } else {
1068                 return -EPERM;
1069         }
1070
1071         /* Assume all bands use the same phy.  True for 11n devices. */
1072         if (wl->pub->_nbands > 1) {
1073                 has_5g++;
1074                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1075                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1076                         *band = brcms_band_5GHz_nphy_template;
1077                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1078                 } else {
1079                         return -EPERM;
1080                 }
1081         }
1082         return 0;
1083 }
1084
1085 /*
1086  * is called in brcms_pci_probe() context, therefore no locking required.
1087  */
1088 static int ieee_hw_init(struct ieee80211_hw *hw)
1089 {
1090         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1091         ieee80211_hw_set(hw, SIGNAL_DBM);
1092         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1093
1094         hw->extra_tx_headroom = brcms_c_get_header_len();
1095         hw->queues = N_TX_QUEUES;
1096         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1097
1098         /* channel change time is dependent on chip and band  */
1099         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1100                                      BIT(NL80211_IFTYPE_AP) |
1101                                      BIT(NL80211_IFTYPE_ADHOC);
1102
1103         /*
1104          * deactivate sending probe responses by ucude, because this will
1105          * cause problems when WPS is used.
1106          *
1107          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1108          */
1109
1110         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1111
1112         hw->rate_control_algorithm = "minstrel_ht";
1113
1114         hw->sta_data_size = 0;
1115         return ieee_hw_rate_init(hw);
1116 }
1117
1118 /**
1119  * attach to the WL device.
1120  *
1121  * Attach to the WL device identified by vendor and device parameters.
1122  * regs is a host accessible memory address pointing to WL device registers.
1123  *
1124  * is called in brcms_bcma_probe() context, therefore no locking required.
1125  */
1126 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1127 {
1128         struct brcms_info *wl = NULL;
1129         int unit, err;
1130         struct ieee80211_hw *hw;
1131         u8 perm[ETH_ALEN];
1132
1133         unit = n_adapters_found;
1134         err = 0;
1135
1136         if (unit < 0)
1137                 return NULL;
1138
1139         /* allocate private info */
1140         hw = bcma_get_drvdata(pdev);
1141         if (hw != NULL)
1142                 wl = hw->priv;
1143         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1144                 return NULL;
1145         wl->wiphy = hw->wiphy;
1146
1147         atomic_set(&wl->callbacks, 0);
1148
1149         init_waitqueue_head(&wl->tx_flush_wq);
1150
1151         /* setup the bottom half handler */
1152         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1153
1154         spin_lock_init(&wl->lock);
1155         spin_lock_init(&wl->isr_lock);
1156
1157         /* common load-time initialization */
1158         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1159         if (!wl->wlc) {
1160                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1161                           KBUILD_MODNAME, err);
1162                 goto fail;
1163         }
1164         wl->pub = brcms_c_pub(wl->wlc);
1165
1166         wl->pub->ieee_hw = hw;
1167
1168         /* register our interrupt handler */
1169         if (request_irq(pdev->irq, brcms_isr,
1170                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1171                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1172                 goto fail;
1173         }
1174         wl->irq = pdev->irq;
1175
1176         /* register module */
1177         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1178
1179         if (ieee_hw_init(hw)) {
1180                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1181                           __func__);
1182                 goto fail;
1183         }
1184
1185         brcms_c_regd_init(wl->wlc);
1186
1187         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1188         if (WARN_ON(!is_valid_ether_addr(perm)))
1189                 goto fail;
1190         SET_IEEE80211_PERM_ADDR(hw, perm);
1191
1192         err = ieee80211_register_hw(hw);
1193         if (err)
1194                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1195                           "%d\n", __func__, err);
1196
1197         if (wl->pub->srom_ccode[0] &&
1198             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1199                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1200
1201         brcms_debugfs_attach(wl->pub);
1202         brcms_debugfs_create_files(wl->pub);
1203         n_adapters_found++;
1204         return wl;
1205
1206 fail:
1207         brcms_free(wl);
1208         return NULL;
1209 }
1210
1211
1212
1213 /**
1214  * determines if a device is a WL device, and if so, attaches it.
1215  *
1216  * This function determines if a device pointed to by pdev is a WL device,
1217  * and if so, performs a brcms_attach() on it.
1218  *
1219  * Perimeter lock is initialized in the course of this function.
1220  */
1221 static int brcms_bcma_probe(struct bcma_device *pdev)
1222 {
1223         struct brcms_info *wl;
1224         struct ieee80211_hw *hw;
1225
1226         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1227                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1228                  pdev->irq);
1229
1230         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1231             (pdev->id.id != BCMA_CORE_80211))
1232                 return -ENODEV;
1233
1234         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1235         if (!hw) {
1236                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1237                 return -ENOMEM;
1238         }
1239
1240         SET_IEEE80211_DEV(hw, &pdev->dev);
1241
1242         bcma_set_drvdata(pdev, hw);
1243
1244         memset(hw->priv, 0, sizeof(*wl));
1245
1246         wl = brcms_attach(pdev);
1247         if (!wl) {
1248                 pr_err("%s: brcms_attach failed!\n", __func__);
1249                 return -ENODEV;
1250         }
1251         brcms_led_register(wl);
1252
1253         return 0;
1254 }
1255
1256 static int brcms_suspend(struct bcma_device *pdev)
1257 {
1258         struct brcms_info *wl;
1259         struct ieee80211_hw *hw;
1260
1261         hw = bcma_get_drvdata(pdev);
1262         wl = hw->priv;
1263         if (!wl) {
1264                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1265                        __func__);
1266                 return -ENODEV;
1267         }
1268
1269         /* only need to flag hw is down for proper resume */
1270         spin_lock_bh(&wl->lock);
1271         wl->pub->hw_up = false;
1272         spin_unlock_bh(&wl->lock);
1273
1274         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1275
1276         return 0;
1277 }
1278
1279 static int brcms_resume(struct bcma_device *pdev)
1280 {
1281         return 0;
1282 }
1283
1284 static struct bcma_driver brcms_bcma_driver = {
1285         .name     = KBUILD_MODNAME,
1286         .probe    = brcms_bcma_probe,
1287         .suspend  = brcms_suspend,
1288         .resume   = brcms_resume,
1289         .remove   = brcms_remove,
1290         .id_table = brcms_coreid_table,
1291 };
1292
1293 /**
1294  * This is the main entry point for the brcmsmac driver.
1295  *
1296  * This function is scheduled upon module initialization and
1297  * does the driver registration, which result in brcms_bcma_probe()
1298  * call resulting in the driver bringup.
1299  */
1300 static void brcms_driver_init(struct work_struct *work)
1301 {
1302         int error;
1303
1304         error = bcma_driver_register(&brcms_bcma_driver);
1305         if (error)
1306                 pr_err("%s: register returned %d\n", __func__, error);
1307 }
1308
1309 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1310
1311 static int __init brcms_module_init(void)
1312 {
1313         brcms_debugfs_init();
1314         if (!schedule_work(&brcms_driver_work))
1315                 return -EBUSY;
1316
1317         return 0;
1318 }
1319
1320 /**
1321  * This function unloads the brcmsmac driver from the system.
1322  *
1323  * This function unconditionally unloads the brcmsmac driver module from the
1324  * system.
1325  *
1326  */
1327 static void __exit brcms_module_exit(void)
1328 {
1329         cancel_work_sync(&brcms_driver_work);
1330         bcma_driver_unregister(&brcms_bcma_driver);
1331         brcms_debugfs_exit();
1332 }
1333
1334 module_init(brcms_module_init);
1335 module_exit(brcms_module_exit);
1336
1337 /*
1338  * precondition: perimeter lock has been acquired
1339  */
1340 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1341                          bool state, int prio)
1342 {
1343         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1344 }
1345
1346 /*
1347  * precondition: perimeter lock has been acquired
1348  */
1349 void brcms_init(struct brcms_info *wl)
1350 {
1351         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1352                        wl->pub->unit);
1353         brcms_reset(wl);
1354         brcms_c_init(wl->wlc, wl->mute_tx);
1355 }
1356
1357 /*
1358  * precondition: perimeter lock has been acquired
1359  */
1360 uint brcms_reset(struct brcms_info *wl)
1361 {
1362         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1363         brcms_c_reset(wl->wlc);
1364
1365         /* dpc will not be rescheduled */
1366         wl->resched = false;
1367
1368         /* inform publicly that interface is down */
1369         wl->pub->up = false;
1370
1371         return 0;
1372 }
1373
1374 void brcms_fatal_error(struct brcms_info *wl)
1375 {
1376         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1377                   wl->wlc->pub->unit);
1378         brcms_reset(wl);
1379         ieee80211_restart_hw(wl->pub->ieee_hw);
1380 }
1381
1382 /*
1383  * These are interrupt on/off entry points. Disable interrupts
1384  * during interrupt state transition.
1385  */
1386 void brcms_intrson(struct brcms_info *wl)
1387 {
1388         unsigned long flags;
1389
1390         spin_lock_irqsave(&wl->isr_lock, flags);
1391         brcms_c_intrson(wl->wlc);
1392         spin_unlock_irqrestore(&wl->isr_lock, flags);
1393 }
1394
1395 u32 brcms_intrsoff(struct brcms_info *wl)
1396 {
1397         unsigned long flags;
1398         u32 status;
1399
1400         spin_lock_irqsave(&wl->isr_lock, flags);
1401         status = brcms_c_intrsoff(wl->wlc);
1402         spin_unlock_irqrestore(&wl->isr_lock, flags);
1403         return status;
1404 }
1405
1406 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1407 {
1408         unsigned long flags;
1409
1410         spin_lock_irqsave(&wl->isr_lock, flags);
1411         brcms_c_intrsrestore(wl->wlc, macintmask);
1412         spin_unlock_irqrestore(&wl->isr_lock, flags);
1413 }
1414
1415 /*
1416  * precondition: perimeter lock has been acquired
1417  */
1418 int brcms_up(struct brcms_info *wl)
1419 {
1420         int error = 0;
1421
1422         if (wl->pub->up)
1423                 return 0;
1424
1425         error = brcms_c_up(wl->wlc);
1426
1427         return error;
1428 }
1429
1430 /*
1431  * precondition: perimeter lock has been acquired
1432  */
1433 void brcms_down(struct brcms_info *wl)
1434 {
1435         uint callbacks, ret_val = 0;
1436
1437         /* call common down function */
1438         ret_val = brcms_c_down(wl->wlc);
1439         callbacks = atomic_read(&wl->callbacks) - ret_val;
1440
1441         /* wait for down callbacks to complete */
1442         spin_unlock_bh(&wl->lock);
1443
1444         /* For HIGH_only driver, it's important to actually schedule other work,
1445          * not just spin wait since everything runs at schedule level
1446          */
1447         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1448
1449         spin_lock_bh(&wl->lock);
1450 }
1451
1452 /*
1453 * precondition: perimeter lock is not acquired
1454  */
1455 static void _brcms_timer(struct work_struct *work)
1456 {
1457         struct brcms_timer *t = container_of(work, struct brcms_timer,
1458                                              dly_wrk.work);
1459
1460         spin_lock_bh(&t->wl->lock);
1461
1462         if (t->set) {
1463                 if (t->periodic) {
1464                         atomic_inc(&t->wl->callbacks);
1465                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1466                                                      &t->dly_wrk,
1467                                                      msecs_to_jiffies(t->ms));
1468                 } else {
1469                         t->set = false;
1470                 }
1471
1472                 t->fn(t->arg);
1473         }
1474
1475         atomic_dec(&t->wl->callbacks);
1476
1477         spin_unlock_bh(&t->wl->lock);
1478 }
1479
1480 /*
1481  * Adds a timer to the list. Caller supplies a timer function.
1482  * Is called from wlc.
1483  *
1484  * precondition: perimeter lock has been acquired
1485  */
1486 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1487                                      void (*fn) (void *arg),
1488                                      void *arg, const char *name)
1489 {
1490         struct brcms_timer *t;
1491
1492         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1493         if (!t)
1494                 return NULL;
1495
1496         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1497         t->wl = wl;
1498         t->fn = fn;
1499         t->arg = arg;
1500         t->next = wl->timers;
1501         wl->timers = t;
1502
1503 #ifdef DEBUG
1504         t->name = kstrdup(name, GFP_ATOMIC);
1505 #endif
1506
1507         return t;
1508 }
1509
1510 /*
1511  * adds only the kernel timer since it's going to be more accurate
1512  * as well as it's easier to make it periodic
1513  *
1514  * precondition: perimeter lock has been acquired
1515  */
1516 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1517 {
1518         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1519
1520 #ifdef DEBUG
1521         if (t->set)
1522                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1523                                "%s: Already set. Name: %s, per %d\n",
1524                                __func__, t->name, periodic);
1525 #endif
1526         t->ms = ms;
1527         t->periodic = (bool) periodic;
1528         if (!t->set) {
1529                 t->set = true;
1530                 atomic_inc(&t->wl->callbacks);
1531         }
1532
1533         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1534 }
1535
1536 /*
1537  * return true if timer successfully deleted, false if still pending
1538  *
1539  * precondition: perimeter lock has been acquired
1540  */
1541 bool brcms_del_timer(struct brcms_timer *t)
1542 {
1543         if (t->set) {
1544                 t->set = false;
1545                 if (!cancel_delayed_work(&t->dly_wrk))
1546                         return false;
1547
1548                 atomic_dec(&t->wl->callbacks);
1549         }
1550
1551         return true;
1552 }
1553
1554 /*
1555  * precondition: perimeter lock has been acquired
1556  */
1557 void brcms_free_timer(struct brcms_timer *t)
1558 {
1559         struct brcms_info *wl = t->wl;
1560         struct brcms_timer *tmp;
1561
1562         /* delete the timer in case it is active */
1563         brcms_del_timer(t);
1564
1565         if (wl->timers == t) {
1566                 wl->timers = wl->timers->next;
1567 #ifdef DEBUG
1568                 kfree(t->name);
1569 #endif
1570                 kfree(t);
1571                 return;
1572
1573         }
1574
1575         tmp = wl->timers;
1576         while (tmp) {
1577                 if (tmp->next == t) {
1578                         tmp->next = t->next;
1579 #ifdef DEBUG
1580                         kfree(t->name);
1581 #endif
1582                         kfree(t);
1583                         return;
1584                 }
1585                 tmp = tmp->next;
1586         }
1587
1588 }
1589
1590 /*
1591  * precondition: no locking required
1592  */
1593 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1594 {
1595         int i, entry;
1596         const u8 *pdata;
1597         struct firmware_hdr *hdr;
1598         for (i = 0; i < wl->fw.fw_cnt; i++) {
1599                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1600                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1601                      entry++, hdr++) {
1602                         u32 len = le32_to_cpu(hdr->len);
1603                         if (le32_to_cpu(hdr->idx) == idx) {
1604                                 pdata = wl->fw.fw_bin[i]->data +
1605                                         le32_to_cpu(hdr->offset);
1606                                 *pbuf = kvmalloc(len, GFP_KERNEL);
1607                                 if (*pbuf == NULL)
1608                                         goto fail;
1609                                 memcpy(*pbuf, pdata, len);
1610                                 return 0;
1611                         }
1612                 }
1613         }
1614         brcms_err(wl->wlc->hw->d11core,
1615                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1616         *pbuf = NULL;
1617 fail:
1618         return -ENODATA;
1619 }
1620
1621 /*
1622  * Precondition: Since this function is called in brcms_bcma_probe() context,
1623  * no locking is required.
1624  */
1625 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1626 {
1627         int i, entry;
1628         const u8 *pdata;
1629         struct firmware_hdr *hdr;
1630         for (i = 0; i < wl->fw.fw_cnt; i++) {
1631                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1632                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1633                      entry++, hdr++) {
1634                         if (le32_to_cpu(hdr->idx) == idx) {
1635                                 pdata = wl->fw.fw_bin[i]->data +
1636                                         le32_to_cpu(hdr->offset);
1637                                 if (le32_to_cpu(hdr->len) != 4) {
1638                                         brcms_err(wl->wlc->hw->d11core,
1639                                                   "ERROR: fw hdr len\n");
1640                                         return -ENOMSG;
1641                                 }
1642                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1643                                 return 0;
1644                         }
1645                 }
1646         }
1647         brcms_err(wl->wlc->hw->d11core,
1648                   "ERROR: ucode tag:%d can not be found!\n", idx);
1649         return -ENOMSG;
1650 }
1651
1652 /*
1653  * precondition: can both be called locked and unlocked
1654  */
1655 void brcms_ucode_free_buf(void *p)
1656 {
1657         kvfree(p);
1658 }
1659
1660 /*
1661  * checks validity of all firmware images loaded from user space
1662  *
1663  * Precondition: Since this function is called in brcms_bcma_probe() context,
1664  * no locking is required.
1665  */
1666 int brcms_check_firmwares(struct brcms_info *wl)
1667 {
1668         int i;
1669         int entry;
1670         int rc = 0;
1671         const struct firmware *fw;
1672         const struct firmware *fw_hdr;
1673         struct firmware_hdr *ucode_hdr;
1674         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1675                 fw =  wl->fw.fw_bin[i];
1676                 fw_hdr = wl->fw.fw_hdr[i];
1677                 if (fw == NULL && fw_hdr == NULL) {
1678                         break;
1679                 } else if (fw == NULL || fw_hdr == NULL) {
1680                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1681                                   __func__);
1682                         rc = -EBADF;
1683                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1684                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1685                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1686                                 sizeof(struct firmware_hdr));
1687                         rc = -EBADF;
1688                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1689                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1690                                   __func__, fw->size);
1691                         rc = -EBADF;
1692                 } else {
1693                         /* check if ucode section overruns firmware image */
1694                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1695                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1696                              !rc; entry++, ucode_hdr++) {
1697                                 if (le32_to_cpu(ucode_hdr->offset) +
1698                                     le32_to_cpu(ucode_hdr->len) >
1699                                     fw->size) {
1700                                         wiphy_err(wl->wiphy,
1701                                                   "%s: conflicting bin/hdr\n",
1702                                                   __func__);
1703                                         rc = -EBADF;
1704                                 }
1705                         }
1706                 }
1707         }
1708         if (rc == 0 && wl->fw.fw_cnt != i) {
1709                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1710                         wl->fw.fw_cnt);
1711                 rc = -EBADF;
1712         }
1713         return rc;
1714 }
1715
1716 /*
1717  * precondition: perimeter lock has been acquired
1718  */
1719 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1720 {
1721         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1722
1723         spin_unlock_bh(&wl->lock);
1724         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1725         if (blocked)
1726                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1727         spin_lock_bh(&wl->lock);
1728         return blocked;
1729 }