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

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  12  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  14  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  15  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define __UNDEF_NO_VERSION__
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/etherdevice.h>
  22 #include <linux/sched.h>
  23 #include <linux/firmware.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/bcma/bcma.h>
  27 #include <net/mac80211.h>
  28 #include <defs.h>
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37 #include "debug.h"
  38 #include "led.h"
  39
  40 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  41 #define BRCMS_FLUSH_TIMEOUT     500 /* msec */
  42
  43 /* Flags we support */
  44 #define MAC_FILTERS (FIF_ALLMULTI | \
  45         FIF_FCSFAIL | \
  46         FIF_CONTROL | \
  47         FIF_OTHER_BSS | \
  48         FIF_BCN_PRBRESP_PROMISC | \
  49         FIF_PSPOLL)
  50
  51 #define CHAN2GHZ(channel, freqency, chflags)  { \
  52         .band = NL80211_BAND_2GHZ, \
  53         .center_freq = (freqency), \
  54         .hw_value = (channel), \
  55         .flags = chflags, \
  56         .max_antenna_gain = 0, \
  57         .max_power = 19, \
  58 }
  59
  60 #define CHAN5GHZ(channel, chflags)  { \
  61         .band = NL80211_BAND_5GHZ, \
  62         .center_freq = 5000 + 5*(channel), \
  63         .hw_value = (channel), \
  64         .flags = chflags, \
  65         .max_antenna_gain = 0, \
  66         .max_power = 21, \
  67 }
  68
  69 #define RATE(rate100m, _flags) { \
  70         .bitrate = (rate100m), \
  71         .flags = (_flags), \
  72         .hw_value = (rate100m / 5), \
  73 }
  74
  75 struct firmware_hdr {
  76         __le32 offset;
  77         __le32 len;
  78         __le32 idx;
  79 };
  80
  81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  82         "brcm/bcm43xx",
  83         NULL
  84 };
  85
  86 static int n_adapters_found;
  87
  88 MODULE_AUTHOR("Broadcom Corporation");
  89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  90 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  91 MODULE_LICENSE("Dual BSD/GPL");
  92 /* This needs to be adjusted when brcms_firmwares changes */
  93 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  94 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  95
  96 /* recognized BCMA Core IDs */
  97 static struct bcma_device_id brcms_coreid_table[] = {
  98         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
  99         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
 100         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
 101         {},
 102 };
 103 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 104
 105 #if defined(CONFIG_BRCMDBG)
 106 /*
 107  * Module parameter for setting the debug message level. Available
 108  * flags are specified by the BRCM_DL_* macros in
 109  * drivers/net/wireless/brcm80211/include/defs.h.
 110  */
 111 module_param_named(debug, brcm_msg_level, uint, 0644);
 112 #endif
 113
 114 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 115         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 116         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 117         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 118         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 119         CHAN2GHZ(5, 2432, 0),
 120         CHAN2GHZ(6, 2437, 0),
 121         CHAN2GHZ(7, 2442, 0),
 122         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 125         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 126         CHAN2GHZ(12, 2467,
 127                  IEEE80211_CHAN_NO_IR |
 128                  IEEE80211_CHAN_NO_HT40PLUS),
 129         CHAN2GHZ(13, 2472,
 130                  IEEE80211_CHAN_NO_IR |
 131                  IEEE80211_CHAN_NO_HT40PLUS),
 132         CHAN2GHZ(14, 2484,
 133                  IEEE80211_CHAN_NO_IR |
 134                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 135                  IEEE80211_CHAN_NO_OFDM)
 136 };
 137
 138 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 139         /* UNII-1 */
 140         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 141         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 142         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 143         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 144         /* UNII-2 */
 145         CHAN5GHZ(52,
 146                  IEEE80211_CHAN_RADAR |
 147                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 148         CHAN5GHZ(56,
 149                  IEEE80211_CHAN_RADAR |
 150                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 151         CHAN5GHZ(60,
 152                  IEEE80211_CHAN_RADAR |
 153                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 154         CHAN5GHZ(64,
 155                  IEEE80211_CHAN_RADAR |
 156                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 157         /* MID */
 158         CHAN5GHZ(100,
 159                  IEEE80211_CHAN_RADAR |
 160                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 161         CHAN5GHZ(104,
 162                  IEEE80211_CHAN_RADAR |
 163                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 164         CHAN5GHZ(108,
 165                  IEEE80211_CHAN_RADAR |
 166                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 167         CHAN5GHZ(112,
 168                  IEEE80211_CHAN_RADAR |
 169                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 170         CHAN5GHZ(116,
 171                  IEEE80211_CHAN_RADAR |
 172                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 173         CHAN5GHZ(120,
 174                  IEEE80211_CHAN_RADAR |
 175                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 176         CHAN5GHZ(124,
 177                  IEEE80211_CHAN_RADAR |
 178                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 179         CHAN5GHZ(128,
 180                  IEEE80211_CHAN_RADAR |
 181                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 182         CHAN5GHZ(132,
 183                  IEEE80211_CHAN_RADAR |
 184                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
 185         CHAN5GHZ(136,
 186                  IEEE80211_CHAN_RADAR |
 187                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
 188         CHAN5GHZ(140,
 189                  IEEE80211_CHAN_RADAR |
 190                  IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
 191                  IEEE80211_CHAN_NO_HT40MINUS),
 192         /* UNII-3 */
 193         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 194         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 195         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 196         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 197         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 198 };
 199
 200 /*
 201  * The rate table is used for both 2.4G and 5G rates. The
 202  * latter being a subset as it does not support CCK rates.
 203  */
 204 static struct ieee80211_rate legacy_ratetable[] = {
 205         RATE(10, 0),
 206         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 207         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 208         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 209         RATE(60, 0),
 210         RATE(90, 0),
 211         RATE(120, 0),
 212         RATE(180, 0),
 213         RATE(240, 0),
 214         RATE(360, 0),
 215         RATE(480, 0),
 216         RATE(540, 0),
 217 };
 218
 219 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 220         .band = NL80211_BAND_2GHZ,
 221         .channels = brcms_2ghz_chantable,
 222         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 223         .bitrates = legacy_ratetable,
 224         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 225         .ht_cap = {
 226                    /* from include/linux/ieee80211.h */
 227                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 228                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 229                    .ht_supported = true,
 230                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 231                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 232                    .mcs = {
 233                            /* placeholders for now */
 234                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 235                            .rx_highest = cpu_to_le16(500),
 236                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 237                    }
 238 };
 239
 240 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 241         .band = NL80211_BAND_5GHZ,
 242         .channels = brcms_5ghz_nphy_chantable,
 243         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 244         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 245         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 246                         BRCMS_LEGACY_5G_RATE_OFFSET,
 247         .ht_cap = {
 248                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 249                           IEEE80211_HT_CAP_SGI_40,
 250                    .ht_supported = true,
 251                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 252                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 253                    .mcs = {
 254                            /* placeholders for now */
 255                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 256                            .rx_highest = cpu_to_le16(500),
 257                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 258                    }
 259 };
 260
 261 /* flags the given rate in rateset as requested */
 262 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 263 {
 264         u32 i;
 265
 266         for (i = 0; i < rs->count; i++) {
 267                 if (rate != (rs->rates[i] & 0x7f))
 268                         continue;
 269
 270                 if (is_br)
 271                         rs->rates[i] |= BRCMS_RATE_FLAG;
 272                 else
 273                         rs->rates[i] &= BRCMS_RATE_MASK;
 274                 return;
 275         }
 276 }
 277
 278 /**
 279  * This function frees the WL per-device resources.
 280  *
 281  * This function frees resources owned by the WL device pointed to
 282  * by the wl parameter.
 283  *
 284  * precondition: can both be called locked and unlocked
 285  *
 286  */
 287 static void brcms_free(struct brcms_info *wl)
 288 {
 289         struct brcms_timer *t, *next;
 290
 291         /* free ucode data */
 292         if (wl->fw.fw_cnt)
 293                 brcms_ucode_data_free(&wl->ucode);
 294         if (wl->irq)
 295                 free_irq(wl->irq, wl);
 296
 297         /* kill dpc */
 298         tasklet_kill(&wl->tasklet);
 299
 300         if (wl->pub) {
 301                 brcms_debugfs_detach(wl->pub);
 302                 brcms_c_module_unregister(wl->pub, "linux", wl);
 303         }
 304
 305         /* free common resources */
 306         if (wl->wlc) {
 307                 brcms_c_detach(wl->wlc);
 308                 wl->wlc = NULL;
 309                 wl->pub = NULL;
 310         }
 311
 312         /* virtual interface deletion is deferred so we cannot spinwait */
 313
 314         /* wait for all pending callbacks to complete */
 315         while (atomic_read(&wl->callbacks) > 0)
 316                 schedule();
 317
 318         /* free timers */
 319         for (t = wl->timers; t; t = next) {
 320                 next = t->next;
 321 #ifdef DEBUG
 322                 kfree(t->name);
 323 #endif
 324                 kfree(t);
 325         }
 326 }
 327
 328 /*
 329 * called from both kernel as from this kernel module (error flow on attach)
 330 * precondition: perimeter lock is not acquired.
 331 */
 332 static void brcms_remove(struct bcma_device *pdev)
 333 {
 334         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 335         struct brcms_info *wl = hw->priv;
 336
 337         if (wl->wlc) {
 338                 brcms_led_unregister(wl);
 339                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 340                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 341                 ieee80211_unregister_hw(hw);
 342         }
 343
 344         brcms_free(wl);
 345
 346         bcma_set_drvdata(pdev, NULL);
 347         ieee80211_free_hw(hw);
 348 }
 349
 350 /*
 351  * Precondition: Since this function is called in brcms_pci_probe() context,
 352  * no locking is required.
 353  */
 354 static void brcms_release_fw(struct brcms_info *wl)
 355 {
 356         int i;
 357         for (i = 0; i < MAX_FW_IMAGES; i++) {
 358                 release_firmware(wl->fw.fw_bin[i]);
 359                 release_firmware(wl->fw.fw_hdr[i]);
 360         }
 361 }
 362
 363 /*
 364  * Precondition: Since this function is called in brcms_pci_probe() context,
 365  * no locking is required.
 366  */
 367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 368 {
 369         int status;
 370         struct device *device = &pdev->dev;
 371         char fw_name[100];
 372         int i;
 373
 374         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 375         for (i = 0; i < MAX_FW_IMAGES; i++) {
 376                 if (brcms_firmwares[i] == NULL)
 377                         break;
 378                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 379                         UCODE_LOADER_API_VER);
 380                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 381                 if (status) {
 382                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 383                                   KBUILD_MODNAME, fw_name);
 384                         return status;
 385                 }
 386                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 387                         UCODE_LOADER_API_VER);
 388                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 389                 if (status) {
 390                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 391                                   KBUILD_MODNAME, fw_name);
 392                         return status;
 393                 }
 394                 wl->fw.hdr_num_entries[i] =
 395                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 396         }
 397         wl->fw.fw_cnt = i;
 398         status = brcms_ucode_data_init(wl, &wl->ucode);
 399         brcms_release_fw(wl);
 400         return status;
 401 }
 402
 403 static void brcms_ops_tx(struct ieee80211_hw *hw,
 404                          struct ieee80211_tx_control *control,
 405                          struct sk_buff *skb)
 406 {
 407         struct brcms_info *wl = hw->priv;
 408         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 409
 410         spin_lock_bh(&wl->lock);
 411         if (!wl->pub->up) {
 412                 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
 413                 kfree_skb(skb);
 414                 goto done;
 415         }
 416         if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
 417                 tx_info->rate_driver_data[0] = control->sta;
 418  done:
 419         spin_unlock_bh(&wl->lock);
 420 }
 421
 422 static int brcms_ops_start(struct ieee80211_hw *hw)
 423 {
 424         struct brcms_info *wl = hw->priv;
 425         bool blocked;
 426         int err;
 427
 428         if (!wl->ucode.bcm43xx_bomminor) {
 429                 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
 430                 if (err)
 431                         return -ENOENT;
 432         }
 433
 434         ieee80211_wake_queues(hw);
 435         spin_lock_bh(&wl->lock);
 436         blocked = brcms_rfkill_set_hw_state(wl);
 437         spin_unlock_bh(&wl->lock);
 438         if (!blocked)
 439                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 440
 441         spin_lock_bh(&wl->lock);
 442         /* avoid acknowledging frames before a non-monitor device is added */
 443         wl->mute_tx = true;
 444
 445         if (!wl->pub->up)
 446                 if (!blocked)
 447                         err = brcms_up(wl);
 448                 else
 449                         err = -ERFKILL;
 450         else
 451                 err = -ENODEV;
 452         spin_unlock_bh(&wl->lock);
 453
 454         if (err != 0)
 455                 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
 456                           __func__, err);
 457
 458         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
 459         return err;
 460 }
 461
 462 static void brcms_ops_stop(struct ieee80211_hw *hw)
 463 {
 464         struct brcms_info *wl = hw->priv;
 465         int status;
 466
 467         ieee80211_stop_queues(hw);
 468
 469         if (wl->wlc == NULL)
 470                 return;
 471
 472         spin_lock_bh(&wl->lock);
 473         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 474         spin_unlock_bh(&wl->lock);
 475         if (!status) {
 476                 brcms_err(wl->wlc->hw->d11core,
 477                           "wl: brcms_ops_stop: chipmatch failed\n");
 478                 return;
 479         }
 480
 481         bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
 482
 483         /* put driver in down state */
 484         spin_lock_bh(&wl->lock);
 485         brcms_down(wl);
 486         spin_unlock_bh(&wl->lock);
 487 }
 488
 489 static int
 490 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 491 {
 492         struct brcms_info *wl = hw->priv;
 493
 494         /* Just STA, AP and ADHOC for now */
 495         if (vif->type != NL80211_IFTYPE_STATION &&
 496             vif->type != NL80211_IFTYPE_AP &&
 497             vif->type != NL80211_IFTYPE_ADHOC) {
 498                 brcms_err(wl->wlc->hw->d11core,
 499                           "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 500                           __func__, vif->type);
 501                 return -EOPNOTSUPP;
 502         }
 503
 504         spin_lock_bh(&wl->lock);
 505         wl->wlc->vif = vif;
 506         wl->mute_tx = false;
 507         brcms_c_mute(wl->wlc, false);
 508         if (vif->type == NL80211_IFTYPE_STATION)
 509                 brcms_c_start_station(wl->wlc, vif->addr);
 510         else if (vif->type == NL80211_IFTYPE_AP)
 511                 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 512                                  vif->bss_conf.ssid, vif->bss_conf.ssid_len);
 513         else if (vif->type == NL80211_IFTYPE_ADHOC)
 514                 brcms_c_start_adhoc(wl->wlc, vif->addr);
 515         spin_unlock_bh(&wl->lock);
 516
 517         return 0;
 518 }
 519
 520 static void
 521 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 522 {
 523         struct brcms_info *wl = hw->priv;
 524
 525         spin_lock_bh(&wl->lock);
 526         wl->wlc->vif = NULL;
 527         spin_unlock_bh(&wl->lock);
 528 }
 529
 530 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 531 {
 532         struct ieee80211_conf *conf = &hw->conf;
 533         struct brcms_info *wl = hw->priv;
 534         struct bcma_device *core = wl->wlc->hw->d11core;
 535         int err = 0;
 536         int new_int;
 537
 538         spin_lock_bh(&wl->lock);
 539         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 540                 brcms_c_set_beacon_listen_interval(wl->wlc,
 541                                                    conf->listen_interval);
 542         }
 543         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 544                 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
 545                                __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 546                                "true" : "false");
 547         if (changed & IEEE80211_CONF_CHANGE_PS)
 548                 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
 549                           __func__, conf->flags & IEEE80211_CONF_PS ?
 550                           "true" : "false");
 551
 552         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 553                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 554                 if (err < 0) {
 555                         brcms_err(core, "%s: Error setting power_level\n",
 556                                   __func__);
 557                         goto config_out;
 558                 }
 559                 new_int = brcms_c_get_tx_power(wl->wlc);
 560                 if (new_int != conf->power_level)
 561                         brcms_err(core,
 562                                   "%s: Power level req != actual, %d %d\n",
 563                                   __func__, conf->power_level,
 564                                   new_int);
 565         }
 566         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 567                 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
 568                     conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
 569                         err = brcms_c_set_channel(wl->wlc,
 570                                                   conf->chandef.chan->hw_value);
 571                 else
 572                         err = -ENOTSUPP;
 573         }
 574         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 575                 err = brcms_c_set_rate_limit(wl->wlc,
 576                                              conf->short_frame_max_tx_count,
 577                                              conf->long_frame_max_tx_count);
 578
 579  config_out:
 580         spin_unlock_bh(&wl->lock);
 581         return err;
 582 }
 583
 584 static void
 585 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 586                         struct ieee80211_vif *vif,
 587                         struct ieee80211_bss_conf *info, u32 changed)
 588 {
 589         struct brcms_info *wl = hw->priv;
 590         struct bcma_device *core = wl->wlc->hw->d11core;
 591
 592         if (changed & BSS_CHANGED_ASSOC) {
 593                 /* association status changed (associated/disassociated)
 594                  * also implies a change in the AID.
 595                  */
 596                 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 597                           __func__, info->assoc ? "" : "dis");
 598                 spin_lock_bh(&wl->lock);
 599                 brcms_c_associate_upd(wl->wlc, info->assoc);
 600                 spin_unlock_bh(&wl->lock);
 601         }
 602         if (changed & BSS_CHANGED_ERP_SLOT) {
 603                 s8 val;
 604
 605                 /* slot timing changed */
 606                 if (info->use_short_slot)
 607                         val = 1;
 608                 else
 609                         val = 0;
 610                 spin_lock_bh(&wl->lock);
 611                 brcms_c_set_shortslot_override(wl->wlc, val);
 612                 spin_unlock_bh(&wl->lock);
 613         }
 614
 615         if (changed & BSS_CHANGED_HT) {
 616                 /* 802.11n parameters changed */
 617                 u16 mode = info->ht_operation_mode;
 618
 619                 spin_lock_bh(&wl->lock);
 620                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 621                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 622                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 623                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 624                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 625                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 626                 spin_unlock_bh(&wl->lock);
 627         }
 628         if (changed & BSS_CHANGED_BASIC_RATES) {
 629                 struct ieee80211_supported_band *bi;
 630                 u32 br_mask, i;
 631                 u16 rate;
 632                 struct brcm_rateset rs;
 633                 int error;
 634
 635                 /* retrieve the current rates */
 636                 spin_lock_bh(&wl->lock);
 637                 brcms_c_get_current_rateset(wl->wlc, &rs);
 638                 spin_unlock_bh(&wl->lock);
 639
 640                 br_mask = info->basic_rates;
 641                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 642                 for (i = 0; i < bi->n_bitrates; i++) {
 643                         /* convert to internal rate value */
 644                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 645
 646                         /* set/clear basic rate flag */
 647                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 648                         br_mask >>= 1;
 649                 }
 650
 651                 /* update the rate set */
 652                 spin_lock_bh(&wl->lock);
 653                 error = brcms_c_set_rateset(wl->wlc, &rs);
 654                 spin_unlock_bh(&wl->lock);
 655                 if (error)
 656                         brcms_err(core, "changing basic rates failed: %d\n",
 657                                   error);
 658         }
 659         if (changed & BSS_CHANGED_BEACON_INT) {
 660                 /* Beacon interval changed */
 661                 spin_lock_bh(&wl->lock);
 662                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 663                 spin_unlock_bh(&wl->lock);
 664         }
 665         if (changed & BSS_CHANGED_BSSID) {
 666                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 667                 spin_lock_bh(&wl->lock);
 668                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 669                 spin_unlock_bh(&wl->lock);
 670         }
 671         if (changed & BSS_CHANGED_SSID) {
 672                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 673                 spin_lock_bh(&wl->lock);
 674                 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
 675                 spin_unlock_bh(&wl->lock);
 676         }
 677         if (changed & BSS_CHANGED_BEACON) {
 678                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 679                 struct sk_buff *beacon;
 680                 u16 tim_offset = 0;
 681
 682                 spin_lock_bh(&wl->lock);
 683                 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
 684                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 685                                        info->dtim_period);
 686                 spin_unlock_bh(&wl->lock);
 687         }
 688
 689         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 690                 struct sk_buff *probe_resp;
 691
 692                 spin_lock_bh(&wl->lock);
 693                 probe_resp = ieee80211_proberesp_get(hw, vif);
 694                 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
 695                 spin_unlock_bh(&wl->lock);
 696         }
 697
 698         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 699                 /* Beaconing should be enabled/disabled (beaconing modes) */
 700                 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
 701                           info->enable_beacon ? "true" : "false");
 702                 if (info->enable_beacon &&
 703                     hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
 704                         brcms_c_enable_probe_resp(wl->wlc, true);
 705                 } else {
 706                         brcms_c_enable_probe_resp(wl->wlc, false);
 707                 }
 708         }
 709
 710         if (changed & BSS_CHANGED_CQM) {
 711                 /* Connection quality monitor config changed */
 712                 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
 713                           " (implement)\n", __func__, info->cqm_rssi_thold,
 714                           info->cqm_rssi_hyst);
 715         }
 716
 717         if (changed & BSS_CHANGED_IBSS) {
 718                 /* IBSS join status changed */
 719                 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
 720                           __func__, info->ibss_joined ? "true" : "false");
 721         }
 722
 723         if (changed & BSS_CHANGED_ARP_FILTER) {
 724                 /* Hardware ARP filter address list or state changed */
 725                 brcms_err(core, "%s: arp filtering: %d addresses"
 726                           " (implement)\n", __func__, info->arp_addr_cnt);
 727         }
 728
 729         if (changed & BSS_CHANGED_QOS) {
 730                 /*
 731                  * QoS for this association was enabled/disabled.
 732                  * Note that it is only ever disabled for station mode.
 733                  */
 734                 brcms_err(core, "%s: qos enabled: %s (implement)\n",
 735                           __func__, info->qos ? "true" : "false");
 736         }
 737         return;
 738 }
 739
 740 static void
 741 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 742                         unsigned int changed_flags,
 743                         unsigned int *total_flags, u64 multicast)
 744 {
 745         struct brcms_info *wl = hw->priv;
 746         struct bcma_device *core = wl->wlc->hw->d11core;
 747
 748         changed_flags &= MAC_FILTERS;
 749         *total_flags &= MAC_FILTERS;
 750
 751         if (changed_flags & FIF_ALLMULTI)
 752                 brcms_dbg_info(core, "FIF_ALLMULTI\n");
 753         if (changed_flags & FIF_FCSFAIL)
 754                 brcms_dbg_info(core, "FIF_FCSFAIL\n");
 755         if (changed_flags & FIF_CONTROL)
 756                 brcms_dbg_info(core, "FIF_CONTROL\n");
 757         if (changed_flags & FIF_OTHER_BSS)
 758                 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
 759         if (changed_flags & FIF_PSPOLL)
 760                 brcms_dbg_info(core, "FIF_PSPOLL\n");
 761         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 762                 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
 763
 764         spin_lock_bh(&wl->lock);
 765         brcms_c_mac_promisc(wl->wlc, *total_flags);
 766         spin_unlock_bh(&wl->lock);
 767         return;
 768 }
 769
 770 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
 771                                     struct ieee80211_vif *vif,
 772                                     const u8 *mac_addr)
 773 {
 774         struct brcms_info *wl = hw->priv;
 775         spin_lock_bh(&wl->lock);
 776         brcms_c_scan_start(wl->wlc);
 777         spin_unlock_bh(&wl->lock);
 778         return;
 779 }
 780
 781 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
 782                                        struct ieee80211_vif *vif)
 783 {
 784         struct brcms_info *wl = hw->priv;
 785         spin_lock_bh(&wl->lock);
 786         brcms_c_scan_stop(wl->wlc);
 787         spin_unlock_bh(&wl->lock);
 788         return;
 789 }
 790
 791 static int
 792 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 793                   const struct ieee80211_tx_queue_params *params)
 794 {
 795         struct brcms_info *wl = hw->priv;
 796
 797         spin_lock_bh(&wl->lock);
 798         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 799         spin_unlock_bh(&wl->lock);
 800
 801         return 0;
 802 }
 803
 804 static int
 805 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 806                struct ieee80211_sta *sta)
 807 {
 808         struct brcms_info *wl = hw->priv;
 809         struct scb *scb = &wl->wlc->pri_scb;
 810
 811         brcms_c_init_scb(scb);
 812
 813         wl->pub->global_ampdu = &(scb->scb_ampdu);
 814         wl->pub->global_ampdu->scb = scb;
 815         wl->pub->global_ampdu->max_pdu = 16;
 816
 817         /*
 818          * minstrel_ht initiates addBA on our behalf by calling
 819          * ieee80211_start_tx_ba_session()
 820          */
 821         return 0;
 822 }
 823
 824 static int
 825 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 826                     struct ieee80211_vif *vif,
 827                     struct ieee80211_ampdu_params *params)
 828 {
 829         struct brcms_info *wl = hw->priv;
 830         struct scb *scb = &wl->wlc->pri_scb;
 831         int status;
 832         struct ieee80211_sta *sta = params->sta;
 833         enum ieee80211_ampdu_mlme_action action = params->action;
 834         u16 tid = params->tid;
 835         u8 buf_size = params->buf_size;
 836
 837         if (WARN_ON(scb->magic != SCB_MAGIC))
 838                 return -EIDRM;
 839         switch (action) {
 840         case IEEE80211_AMPDU_RX_START:
 841                 break;
 842         case IEEE80211_AMPDU_RX_STOP:
 843                 break;
 844         case IEEE80211_AMPDU_TX_START:
 845                 spin_lock_bh(&wl->lock);
 846                 status = brcms_c_aggregatable(wl->wlc, tid);
 847                 spin_unlock_bh(&wl->lock);
 848                 if (!status) {
 849                         brcms_dbg_ht(wl->wlc->hw->d11core,
 850                                      "START: tid %d is not agg\'able\n", tid);
 851                         return -EINVAL;
 852                 }
 853                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 854                 break;
 855
 856         case IEEE80211_AMPDU_TX_STOP_CONT:
 857         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 858         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 859                 spin_lock_bh(&wl->lock);
 860                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 861                 spin_unlock_bh(&wl->lock);
 862                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 863                 break;
 864         case IEEE80211_AMPDU_TX_OPERATIONAL:
 865                 /*
 866                  * BA window size from ADDBA response ('buf_size') defines how
 867                  * many outstanding MPDUs are allowed for the BA stream by
 868                  * recipient and traffic class. 'ampdu_factor' gives maximum
 869                  * AMPDU size.
 870                  */
 871                 spin_lock_bh(&wl->lock);
 872                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 873                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 874                          sta->ht_cap.ampdu_factor)) - 1);
 875                 spin_unlock_bh(&wl->lock);
 876                 /* Power save wakeup */
 877                 break;
 878         default:
 879                 brcms_err(wl->wlc->hw->d11core,
 880                           "%s: Invalid command, ignoring\n", __func__);
 881         }
 882
 883         return 0;
 884 }
 885
 886 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 887 {
 888         struct brcms_info *wl = hw->priv;
 889         bool blocked;
 890
 891         spin_lock_bh(&wl->lock);
 892         blocked = brcms_c_check_radio_disabled(wl->wlc);
 893         spin_unlock_bh(&wl->lock);
 894
 895         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 896 }
 897
 898 static bool brcms_tx_flush_completed(struct brcms_info *wl)
 899 {
 900         bool result;
 901
 902         spin_lock_bh(&wl->lock);
 903         result = brcms_c_tx_flush_completed(wl->wlc);
 904         spin_unlock_bh(&wl->lock);
 905         return result;
 906 }
 907
 908 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 909                             u32 queues, bool drop)
 910 {
 911         struct brcms_info *wl = hw->priv;
 912         int ret;
 913
 914         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 915
 916         ret = wait_event_timeout(wl->tx_flush_wq,
 917                                  brcms_tx_flush_completed(wl),
 918                                  msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
 919
 920         brcms_dbg_mac80211(wl->wlc->hw->d11core,
 921                            "ret=%d\n", jiffies_to_msecs(ret));
 922 }
 923
 924 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 925 {
 926         struct brcms_info *wl = hw->priv;
 927         u64 tsf;
 928
 929         spin_lock_bh(&wl->lock);
 930         tsf = brcms_c_tsf_get(wl->wlc);
 931         spin_unlock_bh(&wl->lock);
 932
 933         return tsf;
 934 }
 935
 936 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
 937                            struct ieee80211_vif *vif, u64 tsf)
 938 {
 939         struct brcms_info *wl = hw->priv;
 940
 941         spin_lock_bh(&wl->lock);
 942         brcms_c_tsf_set(wl->wlc, tsf);
 943         spin_unlock_bh(&wl->lock);
 944 }
 945
 946 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
 947                                  struct ieee80211_sta *sta, bool set)
 948 {
 949         struct brcms_info *wl = hw->priv;
 950         struct sk_buff *beacon = NULL;
 951         u16 tim_offset = 0;
 952
 953         spin_lock_bh(&wl->lock);
 954         if (wl->wlc->vif)
 955                 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
 956                                                   &tim_offset, NULL);
 957         if (beacon)
 958                 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
 959                                        wl->wlc->vif->bss_conf.dtim_period);
 960         spin_unlock_bh(&wl->lock);
 961
 962         return 0;
 963 }
 964
 965 static const struct ieee80211_ops brcms_ops = {
 966         .tx = brcms_ops_tx,
 967         .start = brcms_ops_start,
 968         .stop = brcms_ops_stop,
 969         .add_interface = brcms_ops_add_interface,
 970         .remove_interface = brcms_ops_remove_interface,
 971         .config = brcms_ops_config,
 972         .bss_info_changed = brcms_ops_bss_info_changed,
 973         .configure_filter = brcms_ops_configure_filter,
 974         .sw_scan_start = brcms_ops_sw_scan_start,
 975         .sw_scan_complete = brcms_ops_sw_scan_complete,
 976         .conf_tx = brcms_ops_conf_tx,
 977         .sta_add = brcms_ops_sta_add,
 978         .ampdu_action = brcms_ops_ampdu_action,
 979         .rfkill_poll = brcms_ops_rfkill_poll,
 980         .flush = brcms_ops_flush,
 981         .get_tsf = brcms_ops_get_tsf,
 982         .set_tsf = brcms_ops_set_tsf,
 983         .set_tim = brcms_ops_beacon_set_tim,
 984 };
 985
 986 void brcms_dpc(unsigned long data)
 987 {
 988         struct brcms_info *wl;
 989
 990         wl = (struct brcms_info *) data;
 991
 992         spin_lock_bh(&wl->lock);
 993
 994         /* call the common second level interrupt handler */
 995         if (wl->pub->up) {
 996                 if (wl->resched) {
 997                         unsigned long flags;
 998
 999                         spin_lock_irqsave(&wl->isr_lock, flags);
1000                         brcms_c_intrsupd(wl->wlc);
1001                         spin_unlock_irqrestore(&wl->isr_lock, flags);
1002                 }
1003
1004                 wl->resched = brcms_c_dpc(wl->wlc, true);
1005         }
1006
1007         /* brcms_c_dpc() may bring the driver down */
1008         if (!wl->pub->up)
1009                 goto done;
1010
1011         /* re-schedule dpc */
1012         if (wl->resched)
1013                 tasklet_schedule(&wl->tasklet);
1014         else
1015                 /* re-enable interrupts */
1016                 brcms_intrson(wl);
1017
1018  done:
1019         spin_unlock_bh(&wl->lock);
1020         wake_up(&wl->tx_flush_wq);
1021 }
1022
1023 static irqreturn_t brcms_isr(int irq, void *dev_id)
1024 {
1025         struct brcms_info *wl;
1026         irqreturn_t ret = IRQ_NONE;
1027
1028         wl = (struct brcms_info *) dev_id;
1029
1030         spin_lock(&wl->isr_lock);
1031
1032         /* call common first level interrupt handler */
1033         if (brcms_c_isr(wl->wlc)) {
1034                 /* schedule second level handler */
1035                 tasklet_schedule(&wl->tasklet);
1036                 ret = IRQ_HANDLED;
1037         }
1038
1039         spin_unlock(&wl->isr_lock);
1040
1041         return ret;
1042 }
1043
1044 /*
1045  * is called in brcms_pci_probe() context, therefore no locking required.
1046  */
1047 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1048 {
1049         struct brcms_info *wl = hw->priv;
1050         struct brcms_c_info *wlc = wl->wlc;
1051         struct ieee80211_supported_band *band;
1052         int has_5g = 0;
1053         u16 phy_type;
1054
1055         hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1056         hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1057
1058         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1059         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1060                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1061                 *band = brcms_band_2GHz_nphy_template;
1062                 if (phy_type == PHY_TYPE_LCN) {
1063                         /* Single stream */
1064                         band->ht_cap.mcs.rx_mask[1] = 0;
1065                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1066                 }
1067                 hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
1068         } else {
1069                 return -EPERM;
1070         }
1071
1072         /* Assume all bands use the same phy.  True for 11n devices. */
1073         if (wl->pub->_nbands > 1) {
1074                 has_5g++;
1075                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1076                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
1077                         *band = brcms_band_5GHz_nphy_template;
1078                         hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
1079                 } else {
1080                         return -EPERM;
1081                 }
1082         }
1083         return 0;
1084 }
1085
1086 /*
1087  * is called in brcms_pci_probe() context, therefore no locking required.
1088  */
1089 static int ieee_hw_init(struct ieee80211_hw *hw)
1090 {
1091         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1092         ieee80211_hw_set(hw, SIGNAL_DBM);
1093         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1094
1095         hw->extra_tx_headroom = brcms_c_get_header_len();
1096         hw->queues = N_TX_QUEUES;
1097         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
1098
1099         /* channel change time is dependent on chip and band  */
1100         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1101                                      BIT(NL80211_IFTYPE_AP) |
1102                                      BIT(NL80211_IFTYPE_ADHOC);
1103
1104         /*
1105          * deactivate sending probe responses by ucude, because this will
1106          * cause problems when WPS is used.
1107          *
1108          * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1109          */
1110
1111         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1112
1113         hw->rate_control_algorithm = "minstrel_ht";
1114
1115         hw->sta_data_size = 0;
1116         return ieee_hw_rate_init(hw);
1117 }
1118
1119 /**
1120  * attach to the WL device.
1121  *
1122  * Attach to the WL device identified by vendor and device parameters.
1123  * regs is a host accessible memory address pointing to WL device registers.
1124  *
1125  * is called in brcms_bcma_probe() context, therefore no locking required.
1126  */
1127 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1128 {
1129         struct brcms_info *wl = NULL;
1130         int unit, err;
1131         struct ieee80211_hw *hw;
1132         u8 perm[ETH_ALEN];
1133
1134         unit = n_adapters_found;
1135         err = 0;
1136
1137         if (unit < 0)
1138                 return NULL;
1139
1140         /* allocate private info */
1141         hw = bcma_get_drvdata(pdev);
1142         if (hw != NULL)
1143                 wl = hw->priv;
1144         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1145                 return NULL;
1146         wl->wiphy = hw->wiphy;
1147
1148         atomic_set(&wl->callbacks, 0);
1149
1150         init_waitqueue_head(&wl->tx_flush_wq);
1151
1152         /* setup the bottom half handler */
1153         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1154
1155         spin_lock_init(&wl->lock);
1156         spin_lock_init(&wl->isr_lock);
1157
1158         /* common load-time initialization */
1159         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1160         if (!wl->wlc) {
1161                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1162                           KBUILD_MODNAME, err);
1163                 goto fail;
1164         }
1165         wl->pub = brcms_c_pub(wl->wlc);
1166
1167         wl->pub->ieee_hw = hw;
1168
1169         /* register our interrupt handler */
1170         if (request_irq(pdev->irq, brcms_isr,
1171                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1172                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1173                 goto fail;
1174         }
1175         wl->irq = pdev->irq;
1176
1177         /* register module */
1178         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1179
1180         if (ieee_hw_init(hw)) {
1181                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1182                           __func__);
1183                 goto fail;
1184         }
1185
1186         brcms_c_regd_init(wl->wlc);
1187
1188         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1189         if (WARN_ON(!is_valid_ether_addr(perm)))
1190                 goto fail;
1191         SET_IEEE80211_PERM_ADDR(hw, perm);
1192
1193         err = ieee80211_register_hw(hw);
1194         if (err)
1195                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1196                           "%d\n", __func__, err);
1197
1198         if (wl->pub->srom_ccode[0] &&
1199             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1200                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1201
1202         brcms_debugfs_attach(wl->pub);
1203         brcms_debugfs_create_files(wl->pub);
1204         n_adapters_found++;
1205         return wl;
1206
1207 fail:
1208         brcms_free(wl);
1209         return NULL;
1210 }
1211
1212
1213
1214 /**
1215  * determines if a device is a WL device, and if so, attaches it.
1216  *
1217  * This function determines if a device pointed to by pdev is a WL device,
1218  * and if so, performs a brcms_attach() on it.
1219  *
1220  * Perimeter lock is initialized in the course of this function.
1221  */
1222 static int brcms_bcma_probe(struct bcma_device *pdev)
1223 {
1224         struct brcms_info *wl;
1225         struct ieee80211_hw *hw;
1226
1227         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1228                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1229                  pdev->irq);
1230
1231         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1232             (pdev->id.id != BCMA_CORE_80211))
1233                 return -ENODEV;
1234
1235         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1236         if (!hw) {
1237                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1238                 return -ENOMEM;
1239         }
1240
1241         SET_IEEE80211_DEV(hw, &pdev->dev);
1242
1243         bcma_set_drvdata(pdev, hw);
1244
1245         memset(hw->priv, 0, sizeof(*wl));
1246
1247         wl = brcms_attach(pdev);
1248         if (!wl) {
1249                 pr_err("%s: brcms_attach failed!\n", __func__);
1250                 return -ENODEV;
1251         }
1252         brcms_led_register(wl);
1253
1254         return 0;
1255 }
1256
1257 static int brcms_suspend(struct bcma_device *pdev)
1258 {
1259         struct brcms_info *wl;
1260         struct ieee80211_hw *hw;
1261
1262         hw = bcma_get_drvdata(pdev);
1263         wl = hw->priv;
1264         if (!wl) {
1265                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1266                        __func__);
1267                 return -ENODEV;
1268         }
1269
1270         /* only need to flag hw is down for proper resume */
1271         spin_lock_bh(&wl->lock);
1272         wl->pub->hw_up = false;
1273         spin_unlock_bh(&wl->lock);
1274
1275         brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1276
1277         return 0;
1278 }
1279
1280 static int brcms_resume(struct bcma_device *pdev)
1281 {
1282         return 0;
1283 }
1284
1285 static struct bcma_driver brcms_bcma_driver = {
1286         .name     = KBUILD_MODNAME,
1287         .probe    = brcms_bcma_probe,
1288         .suspend  = brcms_suspend,
1289         .resume   = brcms_resume,
1290         .remove   = brcms_remove,
1291         .id_table = brcms_coreid_table,
1292 };
1293
1294 /**
1295  * This is the main entry point for the brcmsmac driver.
1296  *
1297  * This function is scheduled upon module initialization and
1298  * does the driver registration, which result in brcms_bcma_probe()
1299  * call resulting in the driver bringup.
1300  */
1301 static void brcms_driver_init(struct work_struct *work)
1302 {
1303         int error;
1304
1305         error = bcma_driver_register(&brcms_bcma_driver);
1306         if (error)
1307                 pr_err("%s: register returned %d\n", __func__, error);
1308 }
1309
1310 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1311
1312 static int __init brcms_module_init(void)
1313 {
1314         brcms_debugfs_init();
1315         if (!schedule_work(&brcms_driver_work))
1316                 return -EBUSY;
1317
1318         return 0;
1319 }
1320
1321 /**
1322  * This function unloads the brcmsmac driver from the system.
1323  *
1324  * This function unconditionally unloads the brcmsmac driver module from the
1325  * system.
1326  *
1327  */
1328 static void __exit brcms_module_exit(void)
1329 {
1330         cancel_work_sync(&brcms_driver_work);
1331         bcma_driver_unregister(&brcms_bcma_driver);
1332         brcms_debugfs_exit();
1333 }
1334
1335 module_init(brcms_module_init);
1336 module_exit(brcms_module_exit);
1337
1338 /*
1339  * precondition: perimeter lock has been acquired
1340  */
1341 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1342                          bool state, int prio)
1343 {
1344         brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1345 }
1346
1347 /*
1348  * precondition: perimeter lock has been acquired
1349  */
1350 void brcms_init(struct brcms_info *wl)
1351 {
1352         brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1353                        wl->pub->unit);
1354         brcms_reset(wl);
1355         brcms_c_init(wl->wlc, wl->mute_tx);
1356 }
1357
1358 /*
1359  * precondition: perimeter lock has been acquired
1360  */
1361 uint brcms_reset(struct brcms_info *wl)
1362 {
1363         brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1364         brcms_c_reset(wl->wlc);
1365
1366         /* dpc will not be rescheduled */
1367         wl->resched = false;
1368
1369         /* inform publicly that interface is down */
1370         wl->pub->up = false;
1371
1372         return 0;
1373 }
1374
1375 void brcms_fatal_error(struct brcms_info *wl)
1376 {
1377         brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1378                   wl->wlc->pub->unit);
1379         brcms_reset(wl);
1380         ieee80211_restart_hw(wl->pub->ieee_hw);
1381 }
1382
1383 /*
1384  * These are interrupt on/off entry points. Disable interrupts
1385  * during interrupt state transition.
1386  */
1387 void brcms_intrson(struct brcms_info *wl)
1388 {
1389         unsigned long flags;
1390
1391         spin_lock_irqsave(&wl->isr_lock, flags);
1392         brcms_c_intrson(wl->wlc);
1393         spin_unlock_irqrestore(&wl->isr_lock, flags);
1394 }
1395
1396 u32 brcms_intrsoff(struct brcms_info *wl)
1397 {
1398         unsigned long flags;
1399         u32 status;
1400
1401         spin_lock_irqsave(&wl->isr_lock, flags);
1402         status = brcms_c_intrsoff(wl->wlc);
1403         spin_unlock_irqrestore(&wl->isr_lock, flags);
1404         return status;
1405 }
1406
1407 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1408 {
1409         unsigned long flags;
1410
1411         spin_lock_irqsave(&wl->isr_lock, flags);
1412         brcms_c_intrsrestore(wl->wlc, macintmask);
1413         spin_unlock_irqrestore(&wl->isr_lock, flags);
1414 }
1415
1416 /*
1417  * precondition: perimeter lock has been acquired
1418  */
1419 int brcms_up(struct brcms_info *wl)
1420 {
1421         int error = 0;
1422
1423         if (wl->pub->up)
1424                 return 0;
1425
1426         error = brcms_c_up(wl->wlc);
1427
1428         return error;
1429 }
1430
1431 /*
1432  * precondition: perimeter lock has been acquired
1433  */
1434 void brcms_down(struct brcms_info *wl)
1435 {
1436         uint callbacks, ret_val = 0;
1437
1438         /* call common down function */
1439         ret_val = brcms_c_down(wl->wlc);
1440         callbacks = atomic_read(&wl->callbacks) - ret_val;
1441
1442         /* wait for down callbacks to complete */
1443         spin_unlock_bh(&wl->lock);
1444
1445         /* For HIGH_only driver, it's important to actually schedule other work,
1446          * not just spin wait since everything runs at schedule level
1447          */
1448         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1449
1450         spin_lock_bh(&wl->lock);
1451 }
1452
1453 /*
1454 * precondition: perimeter lock is not acquired
1455  */
1456 static void _brcms_timer(struct work_struct *work)
1457 {
1458         struct brcms_timer *t = container_of(work, struct brcms_timer,
1459                                              dly_wrk.work);
1460
1461         spin_lock_bh(&t->wl->lock);
1462
1463         if (t->set) {
1464                 if (t->periodic) {
1465                         atomic_inc(&t->wl->callbacks);
1466                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1467                                                      &t->dly_wrk,
1468                                                      msecs_to_jiffies(t->ms));
1469                 } else {
1470                         t->set = false;
1471                 }
1472
1473                 t->fn(t->arg);
1474         }
1475
1476         atomic_dec(&t->wl->callbacks);
1477
1478         spin_unlock_bh(&t->wl->lock);
1479 }
1480
1481 /*
1482  * Adds a timer to the list. Caller supplies a timer function.
1483  * Is called from wlc.
1484  *
1485  * precondition: perimeter lock has been acquired
1486  */
1487 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1488                                      void (*fn) (void *arg),
1489                                      void *arg, const char *name)
1490 {
1491         struct brcms_timer *t;
1492
1493         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1494         if (!t)
1495                 return NULL;
1496
1497         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1498         t->wl = wl;
1499         t->fn = fn;
1500         t->arg = arg;
1501         t->next = wl->timers;
1502         wl->timers = t;
1503
1504 #ifdef DEBUG
1505         t->name = kstrdup(name, GFP_ATOMIC);
1506 #endif
1507
1508         return t;
1509 }
1510
1511 /*
1512  * adds only the kernel timer since it's going to be more accurate
1513  * as well as it's easier to make it periodic
1514  *
1515  * precondition: perimeter lock has been acquired
1516  */
1517 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1518 {
1519         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1520
1521 #ifdef DEBUG
1522         if (t->set)
1523                 brcms_dbg_info(t->wl->wlc->hw->d11core,
1524                                "%s: Already set. Name: %s, per %d\n",
1525                                __func__, t->name, periodic);
1526 #endif
1527         t->ms = ms;
1528         t->periodic = (bool) periodic;
1529         if (!t->set) {
1530                 t->set = true;
1531                 atomic_inc(&t->wl->callbacks);
1532         }
1533
1534         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1535 }
1536
1537 /*
1538  * return true if timer successfully deleted, false if still pending
1539  *
1540  * precondition: perimeter lock has been acquired
1541  */
1542 bool brcms_del_timer(struct brcms_timer *t)
1543 {
1544         if (t->set) {
1545                 t->set = false;
1546                 if (!cancel_delayed_work(&t->dly_wrk))
1547                         return false;
1548
1549                 atomic_dec(&t->wl->callbacks);
1550         }
1551
1552         return true;
1553 }
1554
1555 /*
1556  * precondition: perimeter lock has been acquired
1557  */
1558 void brcms_free_timer(struct brcms_timer *t)
1559 {
1560         struct brcms_info *wl = t->wl;
1561         struct brcms_timer *tmp;
1562
1563         /* delete the timer in case it is active */
1564         brcms_del_timer(t);
1565
1566         if (wl->timers == t) {
1567                 wl->timers = wl->timers->next;
1568 #ifdef DEBUG
1569                 kfree(t->name);
1570 #endif
1571                 kfree(t);
1572                 return;
1573
1574         }
1575
1576         tmp = wl->timers;
1577         while (tmp) {
1578                 if (tmp->next == t) {
1579                         tmp->next = t->next;
1580 #ifdef DEBUG
1581                         kfree(t->name);
1582 #endif
1583                         kfree(t);
1584                         return;
1585                 }
1586                 tmp = tmp->next;
1587         }
1588
1589 }
1590
1591 /*
1592  * precondition: no locking required
1593  */
1594 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1595 {
1596         int i, entry;
1597         const u8 *pdata;
1598         struct firmware_hdr *hdr;
1599         for (i = 0; i < wl->fw.fw_cnt; i++) {
1600                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1601                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1602                      entry++, hdr++) {
1603                         u32 len = le32_to_cpu(hdr->len);
1604                         if (le32_to_cpu(hdr->idx) == idx) {
1605                                 pdata = wl->fw.fw_bin[i]->data +
1606                                         le32_to_cpu(hdr->offset);
1607                                 *pbuf = kvmalloc(len, GFP_KERNEL);
1608                                 if (*pbuf == NULL)
1609                                         goto fail;
1610                                 memcpy(*pbuf, pdata, len);
1611                                 return 0;
1612                         }
1613                 }
1614         }
1615         brcms_err(wl->wlc->hw->d11core,
1616                   "ERROR: ucode buf tag:%d can not be found!\n", idx);
1617         *pbuf = NULL;
1618 fail:
1619         return -ENODATA;
1620 }
1621
1622 /*
1623  * Precondition: Since this function is called in brcms_bcma_probe() context,
1624  * no locking is required.
1625  */
1626 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1627 {
1628         int i, entry;
1629         const u8 *pdata;
1630         struct firmware_hdr *hdr;
1631         for (i = 0; i < wl->fw.fw_cnt; i++) {
1632                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1633                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1634                      entry++, hdr++) {
1635                         if (le32_to_cpu(hdr->idx) == idx) {
1636                                 pdata = wl->fw.fw_bin[i]->data +
1637                                         le32_to_cpu(hdr->offset);
1638                                 if (le32_to_cpu(hdr->len) != 4) {
1639                                         brcms_err(wl->wlc->hw->d11core,
1640                                                   "ERROR: fw hdr len\n");
1641                                         return -ENOMSG;
1642                                 }
1643                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1644                                 return 0;
1645                         }
1646                 }
1647         }
1648         brcms_err(wl->wlc->hw->d11core,
1649                   "ERROR: ucode tag:%d can not be found!\n", idx);
1650         return -ENOMSG;
1651 }
1652
1653 /*
1654  * precondition: can both be called locked and unlocked
1655  */
1656 void brcms_ucode_free_buf(void *p)
1657 {
1658         kvfree(p);
1659 }
1660
1661 /*
1662  * checks validity of all firmware images loaded from user space
1663  *
1664  * Precondition: Since this function is called in brcms_bcma_probe() context,
1665  * no locking is required.
1666  */
1667 int brcms_check_firmwares(struct brcms_info *wl)
1668 {
1669         int i;
1670         int entry;
1671         int rc = 0;
1672         const struct firmware *fw;
1673         const struct firmware *fw_hdr;
1674         struct firmware_hdr *ucode_hdr;
1675         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1676                 fw =  wl->fw.fw_bin[i];
1677                 fw_hdr = wl->fw.fw_hdr[i];
1678                 if (fw == NULL && fw_hdr == NULL) {
1679                         break;
1680                 } else if (fw == NULL || fw_hdr == NULL) {
1681                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1682                                   __func__);
1683                         rc = -EBADF;
1684                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1685                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1686                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1687                                 sizeof(struct firmware_hdr));
1688                         rc = -EBADF;
1689                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1690                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1691                                   __func__, fw->size);
1692                         rc = -EBADF;
1693                 } else {
1694                         /* check if ucode section overruns firmware image */
1695                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1696                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1697                              !rc; entry++, ucode_hdr++) {
1698                                 if (le32_to_cpu(ucode_hdr->offset) +
1699                                     le32_to_cpu(ucode_hdr->len) >
1700                                     fw->size) {
1701                                         wiphy_err(wl->wiphy,
1702                                                   "%s: conflicting bin/hdr\n",
1703                                                   __func__);
1704                                         rc = -EBADF;
1705                                 }
1706                         }
1707                 }
1708         }
1709         if (rc == 0 && wl->fw.fw_cnt != i) {
1710                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1711                         wl->fw.fw_cnt);
1712                 rc = -EBADF;
1713         }
1714         return rc;
1715 }
1716
1717 /*
1718  * precondition: perimeter lock has been acquired
1719  */
1720 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1721 {
1722         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1723
1724         spin_unlock_bh(&wl->lock);
1725         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1726         if (blocked)
1727                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1728         spin_lock_bh(&wl->lock);
1729         return blocked;
1730 }