SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/ath9k/main.c

   1 /*
   2  * Copyright (c) 2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /* mac80211 and PCI callbacks */
  18
  19 #include <linux/nl80211.h>
  20 #include "core.h"
  21
  22 #define ATH_PCI_VERSION "0.1"
  23
  24 #define IEEE80211_HTCAP_MAXRXAMPDU_FACTOR       13
  25
  26 static char *dev_info = "ath9k";
  27
  28 MODULE_AUTHOR("Atheros Communications");
  29 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
  30 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
  31 MODULE_LICENSE("Dual BSD/GPL");
  32
  33 static struct pci_device_id ath_pci_id_table[] __devinitdata = {
  34         { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
  35         { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
  36         { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
  37         { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
  38         { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
  39         { 0 }
  40 };
  41
  42 static int ath_get_channel(struct ath_softc *sc,
  43                            struct ieee80211_channel *chan)
  44 {
  45         int i;
  46
  47         for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
  48                 if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
  49                         return i;
  50         }
  51
  52         return -1;
  53 }
  54
  55 static u32 ath_get_extchanmode(struct ath_softc *sc,
  56                                      struct ieee80211_channel *chan)
  57 {
  58         u32 chanmode = 0;
  59         u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
  60         enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;
  61
  62         switch (chan->band) {
  63         case IEEE80211_BAND_2GHZ:
  64                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
  65                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  66                         chanmode = CHANNEL_G_HT20;
  67                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
  68                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  69                         chanmode = CHANNEL_G_HT40PLUS;
  70                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
  71                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  72                         chanmode = CHANNEL_G_HT40MINUS;
  73                 break;
  74         case IEEE80211_BAND_5GHZ:
  75                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
  76                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  77                         chanmode = CHANNEL_A_HT20;
  78                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
  79                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  80                         chanmode = CHANNEL_A_HT40PLUS;
  81                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
  82                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  83                         chanmode = CHANNEL_A_HT40MINUS;
  84                 break;
  85         default:
  86                 break;
  87         }
  88
  89         return chanmode;
  90 }
  91
  92
  93 static int ath_setkey_tkip(struct ath_softc *sc,
  94                            struct ieee80211_key_conf *key,
  95                            struct ath9k_keyval *hk,
  96                            const u8 *addr)
  97 {
  98         u8 *key_rxmic = NULL;
  99         u8 *key_txmic = NULL;
 100
 101         key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
 102         key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
 103
 104         if (addr == NULL) {
 105                 /* Group key installation */
 106                 memcpy(hk->kv_mic,  key_rxmic, sizeof(hk->kv_mic));
 107                 return ath_keyset(sc, key->keyidx, hk, addr);
 108         }
 109         if (!sc->sc_splitmic) {
 110                 /*
 111                  * data key goes at first index,
 112                  * the hal handles the MIC keys at index+64.
 113                  */
 114                 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
 115                 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
 116                 return ath_keyset(sc, key->keyidx, hk, addr);
 117         }
 118         /*
 119          * TX key goes at first index, RX key at +32.
 120          * The hal handles the MIC keys at index+64.
 121          */
 122         memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
 123         if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
 124                 /* Txmic entry failed. No need to proceed further */
 125                 DPRINTF(sc, ATH_DBG_KEYCACHE,
 126                         "%s Setting TX MIC Key Failed\n", __func__);
 127                 return 0;
 128         }
 129
 130         memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
 131         /* XXX delete tx key on failure? */
 132         return ath_keyset(sc, key->keyidx+32, hk, addr);
 133 }
 134
 135 static int ath_key_config(struct ath_softc *sc,
 136                           const u8 *addr,
 137                           struct ieee80211_key_conf *key)
 138 {
 139         struct ieee80211_vif *vif;
 140         struct ath9k_keyval hk;
 141         const u8 *mac = NULL;
 142         int ret = 0;
 143         enum nl80211_iftype opmode;
 144
 145         memset(&hk, 0, sizeof(hk));
 146
 147         switch (key->alg) {
 148         case ALG_WEP:
 149                 hk.kv_type = ATH9K_CIPHER_WEP;
 150                 break;
 151         case ALG_TKIP:
 152                 hk.kv_type = ATH9K_CIPHER_TKIP;
 153                 break;
 154         case ALG_CCMP:
 155                 hk.kv_type = ATH9K_CIPHER_AES_CCM;
 156                 break;
 157         default:
 158                 return -EINVAL;
 159         }
 160
 161         hk.kv_len  = key->keylen;
 162         memcpy(hk.kv_val, key->key, key->keylen);
 163
 164         if (!sc->sc_vaps[0])
 165                 return -EIO;
 166
 167         vif = sc->sc_vaps[0]->av_if_data;
 168         opmode = vif->type;
 169
 170         /*
 171          *  Strategy:
 172          *   For _M_STA mc tx, we will not setup a key at all since we never
 173          *   tx mc.
 174          *   _M_STA mc rx, we will use the keyID.
 175          *   for _M_IBSS mc tx, we will use the keyID, and no macaddr.
 176          *   for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
 177          *   peer node. BUT we will plumb a cleartext key so that we can do
 178          *   perSta default key table lookup in software.
 179          */
 180         if (is_broadcast_ether_addr(addr)) {
 181                 switch (opmode) {
 182                 case NL80211_IFTYPE_STATION:
 183                         /* default key:  could be group WPA key
 184                          * or could be static WEP key */
 185                         mac = NULL;
 186                         break;
 187                 case NL80211_IFTYPE_ADHOC:
 188                         break;
 189                 case NL80211_IFTYPE_AP:
 190                         break;
 191                 default:
 192                         ASSERT(0);
 193                         break;
 194                 }
 195         } else {
 196                 mac = addr;
 197         }
 198
 199         if (key->alg == ALG_TKIP)
 200                 ret = ath_setkey_tkip(sc, key, &hk, mac);
 201         else
 202                 ret = ath_keyset(sc, key->keyidx, &hk, mac);
 203
 204         if (!ret)
 205                 return -EIO;
 206
 207         return 0;
 208 }
 209
 210 static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
 211 {
 212         int freeslot;
 213
 214         freeslot = (key->keyidx >= 4) ? 1 : 0;
 215         ath_key_reset(sc, key->keyidx, freeslot);
 216 }
 217
 218 static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)
 219 {
 220 #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3       /* 2 ^ 16 */
 221 #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6          /* 8 usec */
 222
 223         ht_info->ht_supported = true;
 224         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 225                        IEEE80211_HT_CAP_SM_PS |
 226                        IEEE80211_HT_CAP_SGI_40 |
 227                        IEEE80211_HT_CAP_DSSSCCK40;
 228
 229         ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
 230         ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
 231         /* set up supported mcs set */
 232         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 233         ht_info->mcs.rx_mask[0] = 0xff;
 234         ht_info->mcs.rx_mask[1] = 0xff;
 235         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 236 }
 237
 238 static int ath_rate2idx(struct ath_softc *sc, int rate)
 239 {
 240         int i = 0, cur_band, n_rates;
 241         struct ieee80211_hw *hw = sc->hw;
 242
 243         cur_band = hw->conf.channel->band;
 244         n_rates = sc->sbands[cur_band].n_bitrates;
 245
 246         for (i = 0; i < n_rates; i++) {
 247                 if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
 248                         break;
 249         }
 250
 251         /*
 252          * NB:mac80211 validates rx rate index against the supported legacy rate
 253          * index only (should be done against ht rates also), return the highest
 254          * legacy rate index for rx rate which does not match any one of the
 255          * supported basic and extended rates to make mac80211 happy.
 256          * The following hack will be cleaned up once the issue with
 257          * the rx rate index validation in mac80211 is fixed.
 258          */
 259         if (i == n_rates)
 260                 return n_rates - 1;
 261         return i;
 262 }
 263
 264 static void ath9k_rx_prepare(struct ath_softc *sc,
 265                              struct sk_buff *skb,
 266                              struct ath_recv_status *status,
 267                              struct ieee80211_rx_status *rx_status)
 268 {
 269         struct ieee80211_hw *hw = sc->hw;
 270         struct ieee80211_channel *curchan = hw->conf.channel;
 271
 272         memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
 273
 274         rx_status->mactime = status->tsf;
 275         rx_status->band = curchan->band;
 276         rx_status->freq =  curchan->center_freq;
 277         rx_status->noise = sc->sc_ani.sc_noise_floor;
 278         rx_status->signal = rx_status->noise + status->rssi;
 279         rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
 280         rx_status->antenna = status->antenna;
 281
 282         /* at 45 you will be able to use MCS 15 reliably. A more elaborate
 283          * scheme can be used here but it requires tables of SNR/throughput for
 284          * each possible mode used. */
 285         rx_status->qual = status->rssi * 100 / 45;
 286
 287         /* rssi can be more than 45 though, anything above that
 288          * should be considered at 100% */
 289         if (rx_status->qual > 100)
 290                 rx_status->qual = 100;
 291
 292         if (status->flags & ATH_RX_MIC_ERROR)
 293                 rx_status->flag |= RX_FLAG_MMIC_ERROR;
 294         if (status->flags & ATH_RX_FCS_ERROR)
 295                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 296
 297         rx_status->flag |= RX_FLAG_TSFT;
 298 }
 299
 300 static u8 parse_mpdudensity(u8 mpdudensity)
 301 {
 302         /*
 303          * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 304          *   0 for no restriction
 305          *   1 for 1/4 us
 306          *   2 for 1/2 us
 307          *   3 for 1 us
 308          *   4 for 2 us
 309          *   5 for 4 us
 310          *   6 for 8 us
 311          *   7 for 16 us
 312          */
 313         switch (mpdudensity) {
 314         case 0:
 315                 return 0;
 316         case 1:
 317         case 2:
 318         case 3:
 319                 /* Our lower layer calculations limit our precision to
 320                    1 microsecond */
 321                 return 1;
 322         case 4:
 323                 return 2;
 324         case 5:
 325                 return 4;
 326         case 6:
 327                 return 8;
 328         case 7:
 329                 return 16;
 330         default:
 331                 return 0;
 332         }
 333 }
 334
 335 static void ath9k_ht_conf(struct ath_softc *sc,
 336                           struct ieee80211_bss_conf *bss_conf)
 337 {
 338         struct ath_ht_info *ht_info = &sc->sc_ht_info;
 339
 340         if (sc->hw->conf.ht.enabled) {
 341                 ht_info->ext_chan_offset = bss_conf->ht.secondary_channel_offset;
 342
 343                 if (bss_conf->ht.width_40_ok)
 344                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
 345                 else
 346                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
 347
 348                 ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
 349         }
 350 }
 351
 352 static void ath9k_bss_assoc_info(struct ath_softc *sc,
 353                                  struct ieee80211_bss_conf *bss_conf)
 354 {
 355         struct ieee80211_hw *hw = sc->hw;
 356         struct ieee80211_channel *curchan = hw->conf.channel;
 357         struct ath_vap *avp;
 358         int pos;
 359
 360         if (bss_conf->assoc) {
 361                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
 362                         __func__,
 363                         bss_conf->aid);
 364
 365                 avp = sc->sc_vaps[0];
 366                 if (avp == NULL) {
 367                         DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
 368                                 __func__);
 369                         return;
 370                 }
 371
 372                 /* New association, store aid */
 373                 if (avp->av_opmode == ATH9K_M_STA) {
 374                         sc->sc_curaid = bss_conf->aid;
 375                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
 376                                                sc->sc_curaid);
 377                 }
 378
 379                 /* Configure the beacon */
 380                 ath_beacon_config(sc, 0);
 381                 sc->sc_flags |= SC_OP_BEACONS;
 382
 383                 /* Reset rssi stats */
 384                 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
 385                 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
 386                 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
 387                 sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
 388
 389                 /* Update chainmask */
 390                 ath_update_chainmask(sc, hw->conf.ht.enabled);
 391
 392                 DPRINTF(sc, ATH_DBG_CONFIG,
 393                         "%s: bssid %pM aid 0x%x\n",
 394                         __func__,
 395                         sc->sc_curbssid, sc->sc_curaid);
 396
 397                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
 398                         __func__,
 399                         curchan->center_freq);
 400
 401                 pos = ath_get_channel(sc, curchan);
 402                 if (pos == -1) {
 403                         DPRINTF(sc, ATH_DBG_FATAL,
 404                                 "%s: Invalid channel\n", __func__);
 405                         return;
 406                 }
 407
 408                 if (hw->conf.ht.enabled)
 409                         sc->sc_ah->ah_channels[pos].chanmode =
 410                                 ath_get_extchanmode(sc, curchan);
 411                 else
 412                         sc->sc_ah->ah_channels[pos].chanmode =
 413                                 (curchan->band == IEEE80211_BAND_2GHZ) ?
 414                                 CHANNEL_G : CHANNEL_A;
 415
 416                 /* set h/w channel */
 417                 if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
 418                         DPRINTF(sc, ATH_DBG_FATAL,
 419                                 "%s: Unable to set channel\n",
 420                                 __func__);
 421
 422                 ath_rate_newstate(sc, avp);
 423                 /* Update ratectrl about the new state */
 424                 ath_rc_node_update(hw, avp->rc_node);
 425
 426                 /* Start ANI */
 427                 mod_timer(&sc->sc_ani.timer,
 428                         jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
 429
 430         } else {
 431                 DPRINTF(sc, ATH_DBG_CONFIG,
 432                 "%s: Bss Info DISSOC\n", __func__);
 433                 sc->sc_curaid = 0;
 434         }
 435 }
 436
 437 void ath_get_beaconconfig(struct ath_softc *sc,
 438                           int if_id,
 439                           struct ath_beacon_config *conf)
 440 {
 441         struct ieee80211_hw *hw = sc->hw;
 442
 443         /* fill in beacon config data */
 444
 445         conf->beacon_interval = hw->conf.beacon_int;
 446         conf->listen_interval = 100;
 447         conf->dtim_count = 1;
 448         conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
 449 }
 450
 451 void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
 452                      struct ath_xmit_status *tx_status, struct ath_node *an)
 453 {
 454         struct ieee80211_hw *hw = sc->hw;
 455         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 456
 457         DPRINTF(sc, ATH_DBG_XMIT,
 458                 "%s: TX complete: skb: %p\n", __func__, skb);
 459
 460         ieee80211_tx_info_clear_status(tx_info);
 461         if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
 462                 tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
 463                 /* free driver's private data area of tx_info, XXX: HACK! */
 464                 if (tx_info->control.vif != NULL)
 465                         kfree(tx_info->control.vif);
 466                         tx_info->control.vif = NULL;
 467         }
 468
 469         if (tx_status->flags & ATH_TX_BAR) {
 470                 tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
 471                 tx_status->flags &= ~ATH_TX_BAR;
 472         }
 473
 474         if (!(tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) {
 475                 /* Frame was ACKed */
 476                 tx_info->flags |= IEEE80211_TX_STAT_ACK;
 477         }
 478
 479         tx_info->status.rates[0].count = tx_status->retries + 1;
 480
 481         ieee80211_tx_status(hw, skb);
 482         if (an)
 483                 ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
 484 }
 485
 486 int _ath_rx_indicate(struct ath_softc *sc,
 487                      struct sk_buff *skb,
 488                      struct ath_recv_status *status,
 489                      u16 keyix)
 490 {
 491         struct ieee80211_hw *hw = sc->hw;
 492         struct ath_node *an = NULL;
 493         struct ieee80211_rx_status rx_status;
 494         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 495         int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 496         int padsize;
 497         enum ATH_RX_TYPE st;
 498
 499         /* see if any padding is done by the hw and remove it */
 500         if (hdrlen & 3) {
 501                 padsize = hdrlen % 4;
 502                 memmove(skb->data + padsize, skb->data, hdrlen);
 503                 skb_pull(skb, padsize);
 504         }
 505
 506         /* Prepare rx status */
 507         ath9k_rx_prepare(sc, skb, status, &rx_status);
 508
 509         if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
 510             !(status->flags & ATH_RX_DECRYPT_ERROR)) {
 511                 rx_status.flag |= RX_FLAG_DECRYPTED;
 512         } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
 513                    && !(status->flags & ATH_RX_DECRYPT_ERROR)
 514                    && skb->len >= hdrlen + 4) {
 515                 keyix = skb->data[hdrlen + 3] >> 6;
 516
 517                 if (test_bit(keyix, sc->sc_keymap))
 518                         rx_status.flag |= RX_FLAG_DECRYPTED;
 519         }
 520
 521         spin_lock_bh(&sc->node_lock);
 522         an = ath_node_find(sc, hdr->addr2);
 523         spin_unlock_bh(&sc->node_lock);
 524
 525         if (an) {
 526                 ath_rx_input(sc, an,
 527                              skb, status, &st);
 528         }
 529         if (!an || (st != ATH_RX_CONSUMED))
 530                 __ieee80211_rx(hw, skb, &rx_status);
 531
 532         return 0;
 533 }
 534
 535 int ath_rx_subframe(struct ath_node *an,
 536                     struct sk_buff *skb,
 537                     struct ath_recv_status *status)
 538 {
 539         struct ath_softc *sc = an->an_sc;
 540         struct ieee80211_hw *hw = sc->hw;
 541         struct ieee80211_rx_status rx_status;
 542
 543         /* Prepare rx status */
 544         ath9k_rx_prepare(sc, skb, status, &rx_status);
 545         if (!(status->flags & ATH_RX_DECRYPT_ERROR))
 546                 rx_status.flag |= RX_FLAG_DECRYPTED;
 547
 548         __ieee80211_rx(hw, skb, &rx_status);
 549
 550         return 0;
 551 }
 552
 553 /********************************/
 554 /*       LED functions          */
 555 /********************************/
 556
 557 static void ath_led_brightness(struct led_classdev *led_cdev,
 558                                enum led_brightness brightness)
 559 {
 560         struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
 561         struct ath_softc *sc = led->sc;
 562
 563         switch (brightness) {
 564         case LED_OFF:
 565                 if (led->led_type == ATH_LED_ASSOC ||
 566                     led->led_type == ATH_LED_RADIO)
 567                         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 568                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
 569                                 (led->led_type == ATH_LED_RADIO) ? 1 :
 570                                 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
 571                 break;
 572         case LED_FULL:
 573                 if (led->led_type == ATH_LED_ASSOC)
 574                         sc->sc_flags |= SC_OP_LED_ASSOCIATED;
 575                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
 576                 break;
 577         default:
 578                 break;
 579         }
 580 }
 581
 582 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
 583                             char *trigger)
 584 {
 585         int ret;
 586
 587         led->sc = sc;
 588         led->led_cdev.name = led->name;
 589         led->led_cdev.default_trigger = trigger;
 590         led->led_cdev.brightness_set = ath_led_brightness;
 591
 592         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
 593         if (ret)
 594                 DPRINTF(sc, ATH_DBG_FATAL,
 595                         "Failed to register led:%s", led->name);
 596         else
 597                 led->registered = 1;
 598         return ret;
 599 }
 600
 601 static void ath_unregister_led(struct ath_led *led)
 602 {
 603         if (led->registered) {
 604                 led_classdev_unregister(&led->led_cdev);
 605                 led->registered = 0;
 606         }
 607 }
 608
 609 static void ath_deinit_leds(struct ath_softc *sc)
 610 {
 611         ath_unregister_led(&sc->assoc_led);
 612         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 613         ath_unregister_led(&sc->tx_led);
 614         ath_unregister_led(&sc->rx_led);
 615         ath_unregister_led(&sc->radio_led);
 616         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 617 }
 618
 619 static void ath_init_leds(struct ath_softc *sc)
 620 {
 621         char *trigger;
 622         int ret;
 623
 624         /* Configure gpio 1 for output */
 625         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
 626                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 627         /* LED off, active low */
 628         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 629
 630         trigger = ieee80211_get_radio_led_name(sc->hw);
 631         snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
 632                 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
 633         ret = ath_register_led(sc, &sc->radio_led, trigger);
 634         sc->radio_led.led_type = ATH_LED_RADIO;
 635         if (ret)
 636                 goto fail;
 637
 638         trigger = ieee80211_get_assoc_led_name(sc->hw);
 639         snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
 640                 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
 641         ret = ath_register_led(sc, &sc->assoc_led, trigger);
 642         sc->assoc_led.led_type = ATH_LED_ASSOC;
 643         if (ret)
 644                 goto fail;
 645
 646         trigger = ieee80211_get_tx_led_name(sc->hw);
 647         snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
 648                 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
 649         ret = ath_register_led(sc, &sc->tx_led, trigger);
 650         sc->tx_led.led_type = ATH_LED_TX;
 651         if (ret)
 652                 goto fail;
 653
 654         trigger = ieee80211_get_rx_led_name(sc->hw);
 655         snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
 656                 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
 657         ret = ath_register_led(sc, &sc->rx_led, trigger);
 658         sc->rx_led.led_type = ATH_LED_RX;
 659         if (ret)
 660                 goto fail;
 661
 662         return;
 663
 664 fail:
 665         ath_deinit_leds(sc);
 666 }
 667
 668 #ifdef CONFIG_RFKILL
 669 /*******************/
 670 /*      Rfkill     */
 671 /*******************/
 672
 673 static void ath_radio_enable(struct ath_softc *sc)
 674 {
 675         struct ath_hal *ah = sc->sc_ah;
 676         int status;
 677
 678         spin_lock_bh(&sc->sc_resetlock);
 679         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 680                             sc->sc_ht_info.tx_chan_width,
 681                             sc->sc_tx_chainmask,
 682                             sc->sc_rx_chainmask,
 683                             sc->sc_ht_extprotspacing,
 684                             false, &status)) {
 685                 DPRINTF(sc, ATH_DBG_FATAL,
 686                         "%s: unable to reset channel %u (%uMhz) "
 687                         "flags 0x%x hal status %u\n", __func__,
 688                         ath9k_hw_mhz2ieee(ah,
 689                                           ah->ah_curchan->channel,
 690                                           ah->ah_curchan->channelFlags),
 691                         ah->ah_curchan->channel,
 692                         ah->ah_curchan->channelFlags, status);
 693         }
 694         spin_unlock_bh(&sc->sc_resetlock);
 695
 696         ath_update_txpow(sc);
 697         if (ath_startrecv(sc) != 0) {
 698                 DPRINTF(sc, ATH_DBG_FATAL,
 699                         "%s: unable to restart recv logic\n", __func__);
 700                 return;
 701         }
 702
 703         if (sc->sc_flags & SC_OP_BEACONS)
 704                 ath_beacon_config(sc, ATH_IF_ID_ANY);   /* restart beacons */
 705
 706         /* Re-Enable  interrupts */
 707         ath9k_hw_set_interrupts(ah, sc->sc_imask);
 708
 709         /* Enable LED */
 710         ath9k_hw_cfg_output(ah, ATH_LED_PIN,
 711                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 712         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
 713
 714         ieee80211_wake_queues(sc->hw);
 715 }
 716
 717 static void ath_radio_disable(struct ath_softc *sc)
 718 {
 719         struct ath_hal *ah = sc->sc_ah;
 720         int status;
 721
 722
 723         ieee80211_stop_queues(sc->hw);
 724
 725         /* Disable LED */
 726         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
 727         ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
 728
 729         /* Disable interrupts */
 730         ath9k_hw_set_interrupts(ah, 0);
 731
 732         ath_draintxq(sc, false);        /* clear pending tx frames */
 733         ath_stoprecv(sc);               /* turn off frame recv */
 734         ath_flushrecv(sc);              /* flush recv queue */
 735
 736         spin_lock_bh(&sc->sc_resetlock);
 737         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 738                             sc->sc_ht_info.tx_chan_width,
 739                             sc->sc_tx_chainmask,
 740                             sc->sc_rx_chainmask,
 741                             sc->sc_ht_extprotspacing,
 742                             false, &status)) {
 743                 DPRINTF(sc, ATH_DBG_FATAL,
 744                         "%s: unable to reset channel %u (%uMhz) "
 745                         "flags 0x%x hal status %u\n", __func__,
 746                         ath9k_hw_mhz2ieee(ah,
 747                                 ah->ah_curchan->channel,
 748                                 ah->ah_curchan->channelFlags),
 749                         ah->ah_curchan->channel,
 750                         ah->ah_curchan->channelFlags, status);
 751         }
 752         spin_unlock_bh(&sc->sc_resetlock);
 753
 754         ath9k_hw_phy_disable(ah);
 755         ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 756 }
 757
 758 static bool ath_is_rfkill_set(struct ath_softc *sc)
 759 {
 760         struct ath_hal *ah = sc->sc_ah;
 761
 762         return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
 763                                   ah->ah_rfkill_polarity;
 764 }
 765
 766 /* h/w rfkill poll function */
 767 static void ath_rfkill_poll(struct work_struct *work)
 768 {
 769         struct ath_softc *sc = container_of(work, struct ath_softc,
 770                                             rf_kill.rfkill_poll.work);
 771         bool radio_on;
 772
 773         if (sc->sc_flags & SC_OP_INVALID)
 774                 return;
 775
 776         radio_on = !ath_is_rfkill_set(sc);
 777
 778         /*
 779          * enable/disable radio only when there is a
 780          * state change in RF switch
 781          */
 782         if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
 783                 enum rfkill_state state;
 784
 785                 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
 786                         state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
 787                                 : RFKILL_STATE_HARD_BLOCKED;
 788                 } else if (radio_on) {
 789                         ath_radio_enable(sc);
 790                         state = RFKILL_STATE_UNBLOCKED;
 791                 } else {
 792                         ath_radio_disable(sc);
 793                         state = RFKILL_STATE_HARD_BLOCKED;
 794                 }
 795
 796                 if (state == RFKILL_STATE_HARD_BLOCKED)
 797                         sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
 798                 else
 799                         sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
 800
 801                 rfkill_force_state(sc->rf_kill.rfkill, state);
 802         }
 803
 804         queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
 805                            msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
 806 }
 807
 808 /* s/w rfkill handler */
 809 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
 810 {
 811         struct ath_softc *sc = data;
 812
 813         switch (state) {
 814         case RFKILL_STATE_SOFT_BLOCKED:
 815                 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
 816                     SC_OP_RFKILL_SW_BLOCKED)))
 817                         ath_radio_disable(sc);
 818                 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
 819                 return 0;
 820         case RFKILL_STATE_UNBLOCKED:
 821                 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
 822                         sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
 823                         if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
 824                                 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
 825                                         "radio as it is disabled by h/w \n");
 826                                 return -EPERM;
 827                         }
 828                         ath_radio_enable(sc);
 829                 }
 830                 return 0;
 831         default:
 832                 return -EINVAL;
 833         }
 834 }
 835
 836 /* Init s/w rfkill */
 837 static int ath_init_sw_rfkill(struct ath_softc *sc)
 838 {
 839         sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
 840                                              RFKILL_TYPE_WLAN);
 841         if (!sc->rf_kill.rfkill) {
 842                 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
 843                 return -ENOMEM;
 844         }
 845
 846         snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
 847                 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
 848         sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
 849         sc->rf_kill.rfkill->data = sc;
 850         sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
 851         sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
 852         sc->rf_kill.rfkill->user_claim_unsupported = 1;
 853
 854         return 0;
 855 }
 856
 857 /* Deinitialize rfkill */
 858 static void ath_deinit_rfkill(struct ath_softc *sc)
 859 {
 860         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 861                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
 862
 863         if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
 864                 rfkill_unregister(sc->rf_kill.rfkill);
 865                 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
 866                 sc->rf_kill.rfkill = NULL;
 867         }
 868 }
 869 #endif /* CONFIG_RFKILL */
 870
 871 static int ath_detach(struct ath_softc *sc)
 872 {
 873         struct ieee80211_hw *hw = sc->hw;
 874
 875         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 876
 877         /* Deinit LED control */
 878         ath_deinit_leds(sc);
 879
 880 #ifdef CONFIG_RFKILL
 881         /* deinit rfkill */
 882         ath_deinit_rfkill(sc);
 883 #endif
 884
 885         /* Unregister hw */
 886
 887         ieee80211_unregister_hw(hw);
 888
 889         /* unregister Rate control */
 890         ath_rate_control_unregister();
 891
 892         /* tx/rx cleanup */
 893
 894         ath_rx_cleanup(sc);
 895         ath_tx_cleanup(sc);
 896
 897         /* Deinit */
 898
 899         ath_deinit(sc);
 900
 901         return 0;
 902 }
 903
 904 static int ath_attach(u16 devid,
 905                       struct ath_softc *sc)
 906 {
 907         struct ieee80211_hw *hw = sc->hw;
 908         int error = 0;
 909
 910         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
 911
 912         error = ath_init(devid, sc);
 913         if (error != 0)
 914                 return error;
 915
 916         /* Init nodes */
 917
 918         INIT_LIST_HEAD(&sc->node_list);
 919         spin_lock_init(&sc->node_lock);
 920
 921         /* get mac address from hardware and set in mac80211 */
 922
 923         SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
 924
 925         /* setup channels and rates */
 926
 927         sc->sbands[IEEE80211_BAND_2GHZ].channels =
 928                 sc->channels[IEEE80211_BAND_2GHZ];
 929         sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
 930                 sc->rates[IEEE80211_BAND_2GHZ];
 931         sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 932
 933         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 934                 /* Setup HT capabilities for 2.4Ghz*/
 935                 setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
 936
 937         hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 938                 &sc->sbands[IEEE80211_BAND_2GHZ];
 939
 940         if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
 941                 sc->sbands[IEEE80211_BAND_5GHZ].channels =
 942                         sc->channels[IEEE80211_BAND_5GHZ];
 943                 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
 944                         sc->rates[IEEE80211_BAND_5GHZ];
 945                 sc->sbands[IEEE80211_BAND_5GHZ].band =
 946                         IEEE80211_BAND_5GHZ;
 947
 948                 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 949                         /* Setup HT capabilities for 5Ghz*/
 950                         setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 951
 952                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 953                         &sc->sbands[IEEE80211_BAND_5GHZ];
 954         }
 955
 956         hw->queues = 4;
 957
 958         /* Register rate control */
 959         hw->rate_control_algorithm = "ath9k_rate_control";
 960         error = ath_rate_control_register();
 961         if (error != 0) {
 962                 DPRINTF(sc, ATH_DBG_FATAL,
 963                         "%s: Unable to register rate control "
 964                         "algorithm:%d\n", __func__, error);
 965                 ath_rate_control_unregister();
 966                 goto bad;
 967         }
 968
 969         error = ieee80211_register_hw(hw);
 970         if (error != 0) {
 971                 ath_rate_control_unregister();
 972                 goto bad;
 973         }
 974
 975         /* Initialize LED control */
 976         ath_init_leds(sc);
 977
 978 #ifdef CONFIG_RFKILL
 979         /* Initialze h/w Rfkill */
 980         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 981                 INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
 982
 983         /* Initialize s/w rfkill */
 984         if (ath_init_sw_rfkill(sc))
 985                 goto detach;
 986 #endif
 987
 988         /* initialize tx/rx engine */
 989
 990         error = ath_tx_init(sc, ATH_TXBUF);
 991         if (error != 0)
 992                 goto detach;
 993
 994         error = ath_rx_init(sc, ATH_RXBUF);
 995         if (error != 0)
 996                 goto detach;
 997
 998         return 0;
 999 detach:
1000         ath_detach(sc);
1001 bad:
1002         return error;
1003 }
1004
1005 static int ath9k_start(struct ieee80211_hw *hw)
1006 {
1007         struct ath_softc *sc = hw->priv;
1008         struct ieee80211_channel *curchan = hw->conf.channel;
1009         int error = 0, pos;
1010
1011         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
1012                 "initial channel: %d MHz\n", __func__, curchan->center_freq);
1013
1014         /* setup initial channel */
1015
1016         pos = ath_get_channel(sc, curchan);
1017         if (pos == -1) {
1018                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1019                 return -EINVAL;
1020         }
1021
1022         sc->sc_ah->ah_channels[pos].chanmode =
1023                 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
1024
1025         /* open ath_dev */
1026         error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
1027         if (error) {
1028                 DPRINTF(sc, ATH_DBG_FATAL,
1029                         "%s: Unable to complete ath_open\n", __func__);
1030                 return error;
1031         }
1032
1033 #ifdef CONFIG_RFKILL
1034         /* Start rfkill polling */
1035         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1036                 queue_delayed_work(sc->hw->workqueue,
1037                                    &sc->rf_kill.rfkill_poll, 0);
1038
1039         if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
1040                 if (rfkill_register(sc->rf_kill.rfkill)) {
1041                         DPRINTF(sc, ATH_DBG_FATAL,
1042                                         "Unable to register rfkill\n");
1043                         rfkill_free(sc->rf_kill.rfkill);
1044
1045                         /* Deinitialize the device */
1046                         if (sc->pdev->irq)
1047                                 free_irq(sc->pdev->irq, sc);
1048                         ath_detach(sc);
1049                         pci_iounmap(sc->pdev, sc->mem);
1050                         pci_release_region(sc->pdev, 0);
1051                         pci_disable_device(sc->pdev);
1052                         ieee80211_free_hw(hw);
1053                         return -EIO;
1054                 } else {
1055                         sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
1056                 }
1057         }
1058 #endif
1059
1060         ieee80211_wake_queues(hw);
1061         return 0;
1062 }
1063
1064 static int ath9k_tx(struct ieee80211_hw *hw,
1065                     struct sk_buff *skb)
1066 {
1067         struct ath_softc *sc = hw->priv;
1068         int hdrlen, padsize;
1069         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1070
1071         /*
1072          * As a temporary workaround, assign seq# here; this will likely need
1073          * to be cleaned up to work better with Beacon transmission and virtual
1074          * BSSes.
1075          */
1076         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1077                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1078                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1079                         sc->seq_no += 0x10;
1080                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1081                 hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
1082         }
1083
1084         /* Add the padding after the header if this is not already done */
1085         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1086         if (hdrlen & 3) {
1087                 padsize = hdrlen % 4;
1088                 if (skb_headroom(skb) < padsize)
1089                         return -1;
1090                 skb_push(skb, padsize);
1091                 memmove(skb->data, skb->data + padsize, hdrlen);
1092         }
1093
1094         DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
1095                 __func__,
1096                 skb);
1097
1098         if (ath_tx_start(sc, skb) != 0) {
1099                 DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
1100                 dev_kfree_skb_any(skb);
1101                 /* FIXME: Check for proper return value from ATH_DEV */
1102                 return 0;
1103         }
1104
1105         return 0;
1106 }
1107
1108 static void ath9k_stop(struct ieee80211_hw *hw)
1109 {
1110         struct ath_softc *sc = hw->priv;
1111         int error;
1112
1113         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
1114
1115         error = ath_suspend(sc);
1116         if (error)
1117                 DPRINTF(sc, ATH_DBG_CONFIG,
1118                         "%s: Device is no longer present\n", __func__);
1119
1120         ieee80211_stop_queues(hw);
1121
1122 #ifdef CONFIG_RFKILL
1123         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1124                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1125 #endif
1126 }
1127
1128 static int ath9k_add_interface(struct ieee80211_hw *hw,
1129                                struct ieee80211_if_init_conf *conf)
1130 {
1131         struct ath_softc *sc = hw->priv;
1132         int error, ic_opmode = 0;
1133
1134         /* Support only vap for now */
1135
1136         if (sc->sc_nvaps)
1137                 return -ENOBUFS;
1138
1139         switch (conf->type) {
1140         case NL80211_IFTYPE_STATION:
1141                 ic_opmode = ATH9K_M_STA;
1142                 break;
1143         case NL80211_IFTYPE_ADHOC:
1144                 ic_opmode = ATH9K_M_IBSS;
1145                 break;
1146         case NL80211_IFTYPE_AP:
1147                 ic_opmode = ATH9K_M_HOSTAP;
1148                 break;
1149         default:
1150                 DPRINTF(sc, ATH_DBG_FATAL,
1151                         "%s: Interface type %d not yet supported\n",
1152                         __func__, conf->type);
1153                 return -EOPNOTSUPP;
1154         }
1155
1156         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
1157                 __func__,
1158                 ic_opmode);
1159
1160         error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
1161         if (error) {
1162                 DPRINTF(sc, ATH_DBG_FATAL,
1163                         "%s: Unable to attach vap, error: %d\n",
1164                         __func__, error);
1165                 return error;
1166         }
1167
1168         if (conf->type == NL80211_IFTYPE_AP) {
1169                 /* TODO: is this a suitable place to start ANI for AP mode? */
1170                 /* Start ANI */
1171                 mod_timer(&sc->sc_ani.timer,
1172                           jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
1173         }
1174
1175         return 0;
1176 }
1177
1178 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1179                                    struct ieee80211_if_init_conf *conf)
1180 {
1181         struct ath_softc *sc = hw->priv;
1182         struct ath_vap *avp;
1183         int error;
1184
1185         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
1186
1187         avp = sc->sc_vaps[0];
1188         if (avp == NULL) {
1189                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1190                         __func__);
1191                 return;
1192         }
1193
1194 #ifdef CONFIG_SLOW_ANT_DIV
1195         ath_slow_ant_div_stop(&sc->sc_antdiv);
1196 #endif
1197         /* Stop ANI */
1198         del_timer_sync(&sc->sc_ani.timer);
1199
1200         /* Update ratectrl */
1201         ath_rate_newstate(sc, avp);
1202
1203         /* Reclaim beacon resources */
1204         if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
1205             sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
1206                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1207                 ath_beacon_return(sc, avp);
1208         }
1209
1210         /* Set interrupt mask */
1211         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1212         ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
1213         sc->sc_flags &= ~SC_OP_BEACONS;
1214
1215         error = ath_vap_detach(sc, 0);
1216         if (error)
1217                 DPRINTF(sc, ATH_DBG_FATAL,
1218                         "%s: Unable to detach vap, error: %d\n",
1219                         __func__, error);
1220 }
1221
1222 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1223 {
1224         struct ath_softc *sc = hw->priv;
1225         struct ieee80211_channel *curchan = hw->conf.channel;
1226         struct ieee80211_conf *conf = &hw->conf;
1227         int pos;
1228
1229         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
1230                 __func__,
1231                 curchan->center_freq);
1232
1233         /* Update chainmask */
1234         ath_update_chainmask(sc, conf->ht.enabled);
1235
1236         pos = ath_get_channel(sc, curchan);
1237         if (pos == -1) {
1238                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1239                 return -EINVAL;
1240         }
1241
1242         sc->sc_ah->ah_channels[pos].chanmode =
1243                 (curchan->band == IEEE80211_BAND_2GHZ) ?
1244                 CHANNEL_G : CHANNEL_A;
1245
1246         if (sc->sc_curaid && hw->conf.ht.enabled)
1247                 sc->sc_ah->ah_channels[pos].chanmode =
1248                         ath_get_extchanmode(sc, curchan);
1249
1250         if (changed & IEEE80211_CONF_CHANGE_POWER)
1251                 sc->sc_config.txpowlimit = 2 * conf->power_level;
1252
1253         /* set h/w channel */
1254         if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
1255                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
1256                         __func__);
1257
1258         return 0;
1259 }
1260
1261 static int ath9k_config_interface(struct ieee80211_hw *hw,
1262                                   struct ieee80211_vif *vif,
1263                                   struct ieee80211_if_conf *conf)
1264 {
1265         struct ath_softc *sc = hw->priv;
1266         struct ath_hal *ah = sc->sc_ah;
1267         struct ath_vap *avp;
1268         u32 rfilt = 0;
1269         int error, i;
1270
1271         avp = sc->sc_vaps[0];
1272         if (avp == NULL) {
1273                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1274                         __func__);
1275                 return -EINVAL;
1276         }
1277
1278         /* TODO: Need to decide which hw opmode to use for multi-interface
1279          * cases */
1280         if (vif->type == NL80211_IFTYPE_AP &&
1281             ah->ah_opmode != ATH9K_M_HOSTAP) {
1282                 ah->ah_opmode = ATH9K_M_HOSTAP;
1283                 ath9k_hw_setopmode(ah);
1284                 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
1285                 /* Request full reset to get hw opmode changed properly */
1286                 sc->sc_flags |= SC_OP_FULL_RESET;
1287         }
1288
1289         if ((conf->changed & IEEE80211_IFCC_BSSID) &&
1290             !is_zero_ether_addr(conf->bssid)) {
1291                 switch (vif->type) {
1292                 case NL80211_IFTYPE_STATION:
1293                 case NL80211_IFTYPE_ADHOC:
1294                         /* Update ratectrl about the new state */
1295                         ath_rate_newstate(sc, avp);
1296
1297                         /* Set BSSID */
1298                         memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
1299                         sc->sc_curaid = 0;
1300                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
1301                                                sc->sc_curaid);
1302
1303                         /* Set aggregation protection mode parameters */
1304                         sc->sc_config.ath_aggr_prot = 0;
1305
1306                         /*
1307                          * Reset our TSF so that its value is lower than the
1308                          * beacon that we are trying to catch.
1309                          * Only then hw will update its TSF register with the
1310                          * new beacon. Reset the TSF before setting the BSSID
1311                          * to avoid allowing in any frames that would update
1312                          * our TSF only to have us clear it
1313                          * immediately thereafter.
1314                          */
1315                         ath9k_hw_reset_tsf(sc->sc_ah);
1316
1317                         /* Disable BMISS interrupt when we're not associated */
1318                         ath9k_hw_set_interrupts(sc->sc_ah,
1319                                         sc->sc_imask &
1320                                         ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
1321                         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1322
1323                         DPRINTF(sc, ATH_DBG_CONFIG,
1324                                 "%s: RX filter 0x%x bssid %pM aid 0x%x\n",
1325                                 __func__, rfilt,
1326                                 sc->sc_curbssid, sc->sc_curaid);
1327
1328                         /* need to reconfigure the beacon */
1329                         sc->sc_flags &= ~SC_OP_BEACONS ;
1330
1331                         break;
1332                 default:
1333                         break;
1334                 }
1335         }
1336
1337         if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1338             ((vif->type == NL80211_IFTYPE_ADHOC) ||
1339              (vif->type == NL80211_IFTYPE_AP))) {
1340                 /*
1341                  * Allocate and setup the beacon frame.
1342                  *
1343                  * Stop any previous beacon DMA.  This may be
1344                  * necessary, for example, when an ibss merge
1345                  * causes reconfiguration; we may be called
1346                  * with beacon transmission active.
1347                  */
1348                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1349
1350                 error = ath_beacon_alloc(sc, 0);
1351                 if (error != 0)
1352                         return error;
1353
1354                 ath_beacon_sync(sc, 0);
1355         }
1356
1357         /* Check for WLAN_CAPABILITY_PRIVACY ? */
1358         if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
1359                 for (i = 0; i < IEEE80211_WEP_NKID; i++)
1360                         if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
1361                                 ath9k_hw_keysetmac(sc->sc_ah,
1362                                                    (u16)i,
1363                                                    sc->sc_curbssid);
1364         }
1365
1366         /* Only legacy IBSS for now */
1367         if (vif->type == NL80211_IFTYPE_ADHOC)
1368                 ath_update_chainmask(sc, 0);
1369
1370         return 0;
1371 }
1372
1373 #define SUPPORTED_FILTERS                       \
1374         (FIF_PROMISC_IN_BSS |                   \
1375         FIF_ALLMULTI |                          \
1376         FIF_CONTROL |                           \
1377         FIF_OTHER_BSS |                         \
1378         FIF_BCN_PRBRESP_PROMISC |               \
1379         FIF_FCSFAIL)
1380
1381 /* FIXME: sc->sc_full_reset ? */
1382 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1383                                    unsigned int changed_flags,
1384                                    unsigned int *total_flags,
1385                                    int mc_count,
1386                                    struct dev_mc_list *mclist)
1387 {
1388         struct ath_softc *sc = hw->priv;
1389         u32 rfilt;
1390
1391         changed_flags &= SUPPORTED_FILTERS;
1392         *total_flags &= SUPPORTED_FILTERS;
1393
1394         sc->rx_filter = *total_flags;
1395         rfilt = ath_calcrxfilter(sc);
1396         ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1397
1398         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1399                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1400                         ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
1401         }
1402
1403         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
1404                 __func__, sc->rx_filter);
1405 }
1406
1407 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1408                              struct ieee80211_vif *vif,
1409                              enum sta_notify_cmd cmd,
1410                              struct ieee80211_sta *sta)
1411 {
1412         struct ath_softc *sc = hw->priv;
1413         struct ath_node *an;
1414         unsigned long flags;
1415
1416         spin_lock_irqsave(&sc->node_lock, flags);
1417         an = ath_node_find(sc, sta->addr);
1418         spin_unlock_irqrestore(&sc->node_lock, flags);
1419
1420         switch (cmd) {
1421         case STA_NOTIFY_ADD:
1422                 spin_lock_irqsave(&sc->node_lock, flags);
1423                 if (!an) {
1424                         ath_node_attach(sc, sta->addr, 0);
1425                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %pM\n",
1426                                 __func__, sta->addr);
1427                 } else {
1428                         ath_node_get(sc, sta->addr);
1429                 }
1430
1431                 /* XXX: Is this right? Can the capabilities change? */
1432                 an = ath_node_find(sc, sta->addr);
1433                 an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
1434                                         sta->ht_cap.ampdu_factor);
1435                 an->mpdudensity =
1436                         parse_mpdudensity(sta->ht_cap.ampdu_density);
1437
1438                 spin_unlock_irqrestore(&sc->node_lock, flags);
1439                 break;
1440         case STA_NOTIFY_REMOVE:
1441                 if (!an)
1442                         DPRINTF(sc, ATH_DBG_FATAL,
1443                                 "%s: Removal of a non-existent node\n",
1444                                 __func__);
1445                 else {
1446                         ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
1447                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %pM\n",
1448                                 __func__,
1449                                 sta->addr);
1450                 }
1451                 break;
1452         default:
1453                 break;
1454         }
1455 }
1456
1457 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1458                          u16 queue,
1459                          const struct ieee80211_tx_queue_params *params)
1460 {
1461         struct ath_softc *sc = hw->priv;
1462         struct ath9k_tx_queue_info qi;
1463         int ret = 0, qnum;
1464
1465         if (queue >= WME_NUM_AC)
1466                 return 0;
1467
1468         qi.tqi_aifs = params->aifs;
1469         qi.tqi_cwmin = params->cw_min;
1470         qi.tqi_cwmax = params->cw_max;
1471         qi.tqi_burstTime = params->txop;
1472         qnum = ath_get_hal_qnum(queue, sc);
1473
1474         DPRINTF(sc, ATH_DBG_CONFIG,
1475                 "%s: Configure tx [queue/halq] [%d/%d],  "
1476                 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1477                 __func__,
1478                 queue,
1479                 qnum,
1480                 params->aifs,
1481                 params->cw_min,
1482                 params->cw_max,
1483                 params->txop);
1484
1485         ret = ath_txq_update(sc, qnum, &qi);
1486         if (ret)
1487                 DPRINTF(sc, ATH_DBG_FATAL,
1488                         "%s: TXQ Update failed\n", __func__);
1489
1490         return ret;
1491 }
1492
1493 static int ath9k_set_key(struct ieee80211_hw *hw,
1494                          enum set_key_cmd cmd,
1495                          const u8 *local_addr,
1496                          const u8 *addr,
1497                          struct ieee80211_key_conf *key)
1498 {
1499         struct ath_softc *sc = hw->priv;
1500         int ret = 0;
1501
1502         DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1503
1504         switch (cmd) {
1505         case SET_KEY:
1506                 ret = ath_key_config(sc, addr, key);
1507                 if (!ret) {
1508                         set_bit(key->keyidx, sc->sc_keymap);
1509                         key->hw_key_idx = key->keyidx;
1510                         /* push IV and Michael MIC generation to stack */
1511                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1512                         if (key->alg == ALG_TKIP)
1513                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1514                 }
1515                 break;
1516         case DISABLE_KEY:
1517                 ath_key_delete(sc, key);
1518                 clear_bit(key->keyidx, sc->sc_keymap);
1519                 break;
1520         default:
1521                 ret = -EINVAL;
1522         }
1523
1524         return ret;
1525 }
1526
1527 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1528                                    struct ieee80211_vif *vif,
1529                                    struct ieee80211_bss_conf *bss_conf,
1530                                    u32 changed)
1531 {
1532         struct ath_softc *sc = hw->priv;
1533
1534         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1535                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
1536                         __func__,
1537                         bss_conf->use_short_preamble);
1538                 if (bss_conf->use_short_preamble)
1539                         sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1540                 else
1541                         sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1542         }
1543
1544         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1545                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
1546                         __func__,
1547                         bss_conf->use_cts_prot);
1548                 if (bss_conf->use_cts_prot &&
1549                     hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1550                         sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1551                 else
1552                         sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1553         }
1554
1555         if (changed & BSS_CHANGED_HT) {
1556                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT\n",
1557                         __func__);
1558                 ath9k_ht_conf(sc, bss_conf);
1559         }
1560
1561         if (changed & BSS_CHANGED_ASSOC) {
1562                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
1563                         __func__,
1564                         bss_conf->assoc);
1565                 ath9k_bss_assoc_info(sc, bss_conf);
1566         }
1567 }
1568
1569 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1570 {
1571         u64 tsf;
1572         struct ath_softc *sc = hw->priv;
1573         struct ath_hal *ah = sc->sc_ah;
1574
1575         tsf = ath9k_hw_gettsf64(ah);
1576
1577         return tsf;
1578 }
1579
1580 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1581 {
1582         struct ath_softc *sc = hw->priv;
1583         struct ath_hal *ah = sc->sc_ah;
1584
1585         ath9k_hw_reset_tsf(ah);
1586 }
1587
1588 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1589                        enum ieee80211_ampdu_mlme_action action,
1590                        struct ieee80211_sta *sta,
1591                        u16 tid, u16 *ssn)
1592 {
1593         struct ath_softc *sc = hw->priv;
1594         int ret = 0;
1595
1596         switch (action) {
1597         case IEEE80211_AMPDU_RX_START:
1598                 ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn);
1599                 if (ret < 0)
1600                         DPRINTF(sc, ATH_DBG_FATAL,
1601                                 "%s: Unable to start RX aggregation\n",
1602                                 __func__);
1603                 break;
1604         case IEEE80211_AMPDU_RX_STOP:
1605                 ret = ath_rx_aggr_stop(sc, sta->addr, tid);
1606                 if (ret < 0)
1607                         DPRINTF(sc, ATH_DBG_FATAL,
1608                                 "%s: Unable to stop RX aggregation\n",
1609                                 __func__);
1610                 break;
1611         case IEEE80211_AMPDU_TX_START:
1612                 ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn);
1613                 if (ret < 0)
1614                         DPRINTF(sc, ATH_DBG_FATAL,
1615                                 "%s: Unable to start TX aggregation\n",
1616                                 __func__);
1617                 else
1618                         ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1619                 break;
1620         case IEEE80211_AMPDU_TX_STOP:
1621                 ret = ath_tx_aggr_stop(sc, sta->addr, tid);
1622                 if (ret < 0)
1623                         DPRINTF(sc, ATH_DBG_FATAL,
1624                                 "%s: Unable to stop TX aggregation\n",
1625                                 __func__);
1626
1627                 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1628                 break;
1629         default:
1630                 DPRINTF(sc, ATH_DBG_FATAL,
1631                         "%s: Unknown AMPDU action\n", __func__);
1632         }
1633
1634         return ret;
1635 }
1636
1637 static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value)
1638 {
1639         return -EOPNOTSUPP;
1640 }
1641
1642 static struct ieee80211_ops ath9k_ops = {
1643         .tx                 = ath9k_tx,
1644         .start              = ath9k_start,
1645         .stop               = ath9k_stop,
1646         .add_interface      = ath9k_add_interface,
1647         .remove_interface   = ath9k_remove_interface,
1648         .config             = ath9k_config,
1649         .config_interface   = ath9k_config_interface,
1650         .configure_filter   = ath9k_configure_filter,
1651         .sta_notify         = ath9k_sta_notify,
1652         .conf_tx            = ath9k_conf_tx,
1653         .bss_info_changed   = ath9k_bss_info_changed,
1654         .set_key            = ath9k_set_key,
1655         .get_tsf            = ath9k_get_tsf,
1656         .reset_tsf          = ath9k_reset_tsf,
1657         .ampdu_action       = ath9k_ampdu_action,
1658         .set_frag_threshold = ath9k_no_fragmentation,
1659 };
1660
1661 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1662 {
1663         void __iomem *mem;
1664         struct ath_softc *sc;
1665         struct ieee80211_hw *hw;
1666         const char *athname;
1667         u8 csz;
1668         u32 val;
1669         int ret = 0;
1670
1671         if (pci_enable_device(pdev))
1672                 return -EIO;
1673
1674         /* XXX 32-bit addressing only */
1675         if (pci_set_dma_mask(pdev, 0xffffffff)) {
1676                 printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
1677                 ret = -ENODEV;
1678                 goto bad;
1679         }
1680
1681         /*
1682          * Cache line size is used to size and align various
1683          * structures used to communicate with the hardware.
1684          */
1685         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
1686         if (csz == 0) {
1687                 /*
1688                  * Linux 2.4.18 (at least) writes the cache line size
1689                  * register as a 16-bit wide register which is wrong.
1690                  * We must have this setup properly for rx buffer
1691                  * DMA to work so force a reasonable value here if it
1692                  * comes up zero.
1693                  */
1694                 csz = L1_CACHE_BYTES / sizeof(u32);
1695                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
1696         }
1697         /*
1698          * The default setting of latency timer yields poor results,
1699          * set it to the value used by other systems. It may be worth
1700          * tweaking this setting more.
1701          */
1702         pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
1703
1704         pci_set_master(pdev);
1705
1706         /*
1707          * Disable the RETRY_TIMEOUT register (0x41) to keep
1708          * PCI Tx retries from interfering with C3 CPU state.
1709          */
1710         pci_read_config_dword(pdev, 0x40, &val);
1711         if ((val & 0x0000ff00) != 0)
1712                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1713
1714         ret = pci_request_region(pdev, 0, "ath9k");
1715         if (ret) {
1716                 dev_err(&pdev->dev, "PCI memory region reserve error\n");
1717                 ret = -ENODEV;
1718                 goto bad;
1719         }
1720
1721         mem = pci_iomap(pdev, 0, 0);
1722         if (!mem) {
1723                 printk(KERN_ERR "PCI memory map error\n") ;
1724                 ret = -EIO;
1725                 goto bad1;
1726         }
1727
1728         hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
1729         if (hw == NULL) {
1730                 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
1731                 goto bad2;
1732         }
1733
1734         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1735                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1736                 IEEE80211_HW_SIGNAL_DBM |
1737                 IEEE80211_HW_NOISE_DBM |
1738                 IEEE80211_HW_AMPDU_AGGREGATION;
1739
1740         hw->wiphy->interface_modes =
1741                 BIT(NL80211_IFTYPE_AP) |
1742                 BIT(NL80211_IFTYPE_STATION) |
1743                 BIT(NL80211_IFTYPE_ADHOC);
1744
1745         SET_IEEE80211_DEV(hw, &pdev->dev);
1746         pci_set_drvdata(pdev, hw);
1747
1748         sc = hw->priv;
1749         sc->hw = hw;
1750         sc->pdev = pdev;
1751         sc->mem = mem;
1752
1753         if (ath_attach(id->device, sc) != 0) {
1754                 ret = -ENODEV;
1755                 goto bad3;
1756         }
1757
1758         /* setup interrupt service routine */
1759
1760         if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
1761                 printk(KERN_ERR "%s: request_irq failed\n",
1762                         wiphy_name(hw->wiphy));
1763                 ret = -EIO;
1764                 goto bad4;
1765         }
1766
1767         athname = ath9k_hw_probe(id->vendor, id->device);
1768
1769         printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
1770                wiphy_name(hw->wiphy),
1771                athname ? athname : "Atheros ???",
1772                (unsigned long)mem, pdev->irq);
1773
1774         return 0;
1775 bad4:
1776         ath_detach(sc);
1777 bad3:
1778         ieee80211_free_hw(hw);
1779 bad2:
1780         pci_iounmap(pdev, mem);
1781 bad1:
1782         pci_release_region(pdev, 0);
1783 bad:
1784         pci_disable_device(pdev);
1785         return ret;
1786 }
1787
1788 static void ath_pci_remove(struct pci_dev *pdev)
1789 {
1790         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1791         struct ath_softc *sc = hw->priv;
1792         enum ath9k_int status;
1793
1794         if (pdev->irq) {
1795                 ath9k_hw_set_interrupts(sc->sc_ah, 0);
1796                 /* clear the ISR */
1797                 ath9k_hw_getisr(sc->sc_ah, &status);
1798                 sc->sc_flags |= SC_OP_INVALID;
1799                 free_irq(pdev->irq, sc);
1800         }
1801         ath_detach(sc);
1802
1803         pci_iounmap(pdev, sc->mem);
1804         pci_release_region(pdev, 0);
1805         pci_disable_device(pdev);
1806         ieee80211_free_hw(hw);
1807 }
1808
1809 #ifdef CONFIG_PM
1810
1811 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1812 {
1813         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1814         struct ath_softc *sc = hw->priv;
1815
1816         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1817
1818 #ifdef CONFIG_RFKILL
1819         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1820                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1821 #endif
1822
1823         pci_save_state(pdev);
1824         pci_disable_device(pdev);
1825         pci_set_power_state(pdev, 3);
1826
1827         return 0;
1828 }
1829
1830 static int ath_pci_resume(struct pci_dev *pdev)
1831 {
1832         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1833         struct ath_softc *sc = hw->priv;
1834         u32 val;
1835         int err;
1836
1837         err = pci_enable_device(pdev);
1838         if (err)
1839                 return err;
1840         pci_restore_state(pdev);
1841         /*
1842          * Suspend/Resume resets the PCI configuration space, so we have to
1843          * re-disable the RETRY_TIMEOUT register (0x41) to keep
1844          * PCI Tx retries from interfering with C3 CPU state
1845          */
1846         pci_read_config_dword(pdev, 0x40, &val);
1847         if ((val & 0x0000ff00) != 0)
1848                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1849
1850         /* Enable LED */
1851         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1852                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1853         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1854
1855 #ifdef CONFIG_RFKILL
1856         /*
1857          * check the h/w rfkill state on resume
1858          * and start the rfkill poll timer
1859          */
1860         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1861                 queue_delayed_work(sc->hw->workqueue,
1862                                    &sc->rf_kill.rfkill_poll, 0);
1863 #endif
1864
1865         return 0;
1866 }
1867
1868 #endif /* CONFIG_PM */
1869
1870 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
1871
1872 static struct pci_driver ath_pci_driver = {
1873         .name       = "ath9k",
1874         .id_table   = ath_pci_id_table,
1875         .probe      = ath_pci_probe,
1876         .remove     = ath_pci_remove,
1877 #ifdef CONFIG_PM
1878         .suspend    = ath_pci_suspend,
1879         .resume     = ath_pci_resume,
1880 #endif /* CONFIG_PM */
1881 };
1882
1883 static int __init init_ath_pci(void)
1884 {
1885         printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
1886
1887         if (pci_register_driver(&ath_pci_driver) < 0) {
1888                 printk(KERN_ERR
1889                         "ath_pci: No devices found, driver not installed.\n");
1890                 pci_unregister_driver(&ath_pci_driver);
1891                 return -ENODEV;
1892         }
1893
1894         return 0;
1895 }
1896 module_init(init_ath_pci);
1897
1898 static void __exit exit_ath_pci(void)
1899 {
1900         pci_unregister_driver(&ath_pci_driver);
1901         printk(KERN_INFO "%s: driver unloaded\n", dev_info);
1902 }
1903 module_exit(exit_ath_pci);