git.oblomov.eu Git - 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_IE_CHA_SEC_NONE) &&
  65                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  66                         chanmode = CHANNEL_G_HT20;
  67                 if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
  68                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  69                         chanmode = CHANNEL_G_HT40PLUS;
  70                 if ((ext_chan_offset == IEEE80211_HT_IE_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_IE_CHA_SEC_NONE) &&
  76                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  77                         chanmode = CHANNEL_A_HT20;
  78                 if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
  79                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  80                         chanmode = CHANNEL_A_HT40PLUS;
  81                 if ((ext_chan_offset == IEEE80211_HT_IE_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_ht_info *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 = 1;
 224         ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
 225                         |(u16)IEEE80211_HT_CAP_SM_PS
 226                         |(u16)IEEE80211_HT_CAP_SGI_40
 227                         |(u16)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         /* setup supported mcs set */
 232         memset(ht_info->supp_mcs_set, 0, 16);
 233         ht_info->supp_mcs_set[0] = 0xff;
 234         ht_info->supp_mcs_set[1] = 0xff;
 235         ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_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 = ATH_DEFAULT_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         rx_status->qual = status->rssi * 100 / 64;
 282
 283         if (status->flags & ATH_RX_MIC_ERROR)
 284                 rx_status->flag |= RX_FLAG_MMIC_ERROR;
 285         if (status->flags & ATH_RX_FCS_ERROR)
 286                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 287
 288         rx_status->flag |= RX_FLAG_TSFT;
 289 }
 290
 291 static u8 parse_mpdudensity(u8 mpdudensity)
 292 {
 293         /*
 294          * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 295          *   0 for no restriction
 296          *   1 for 1/4 us
 297          *   2 for 1/2 us
 298          *   3 for 1 us
 299          *   4 for 2 us
 300          *   5 for 4 us
 301          *   6 for 8 us
 302          *   7 for 16 us
 303          */
 304         switch (mpdudensity) {
 305         case 0:
 306                 return 0;
 307         case 1:
 308         case 2:
 309         case 3:
 310                 /* Our lower layer calculations limit our precision to
 311                    1 microsecond */
 312                 return 1;
 313         case 4:
 314                 return 2;
 315         case 5:
 316                 return 4;
 317         case 6:
 318                 return 8;
 319         case 7:
 320                 return 16;
 321         default:
 322                 return 0;
 323         }
 324 }
 325
 326 static void ath9k_ht_conf(struct ath_softc *sc,
 327                           struct ieee80211_bss_conf *bss_conf)
 328 {
 329 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT BIT(14)
 330         struct ath_ht_info *ht_info = &sc->sc_ht_info;
 331
 332         if (bss_conf->assoc_ht) {
 333                 ht_info->ext_chan_offset =
 334                         bss_conf->ht_bss_conf->bss_cap &
 335                                 IEEE80211_HT_IE_CHA_SEC_OFFSET;
 336
 337                 if (!(bss_conf->ht_conf->cap &
 338                         IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
 339                             (bss_conf->ht_bss_conf->bss_cap &
 340                                 IEEE80211_HT_IE_CHA_WIDTH))
 341                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
 342                 else
 343                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
 344
 345                 ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
 346                 ht_info->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
 347                                         bss_conf->ht_conf->ampdu_factor);
 348                 ht_info->mpdudensity =
 349                         parse_mpdudensity(bss_conf->ht_conf->ampdu_density);
 350
 351         }
 352
 353 #undef IEEE80211_HT_CAP_40MHZ_INTOLERANT
 354 }
 355
 356 static void ath9k_bss_assoc_info(struct ath_softc *sc,
 357                                  struct ieee80211_bss_conf *bss_conf)
 358 {
 359         struct ieee80211_hw *hw = sc->hw;
 360         struct ieee80211_channel *curchan = hw->conf.channel;
 361         struct ath_vap *avp;
 362         int pos;
 363         DECLARE_MAC_BUF(mac);
 364
 365         if (bss_conf->assoc) {
 366                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
 367                         __func__,
 368                         bss_conf->aid);
 369
 370                 avp = sc->sc_vaps[0];
 371                 if (avp == NULL) {
 372                         DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
 373                                 __func__);
 374                         return;
 375                 }
 376
 377                 /* New association, store aid */
 378                 if (avp->av_opmode == ATH9K_M_STA) {
 379                         sc->sc_curaid = bss_conf->aid;
 380                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
 381                                                sc->sc_curaid);
 382                 }
 383
 384                 /* Configure the beacon */
 385                 ath_beacon_config(sc, 0);
 386                 sc->sc_flags |= SC_OP_BEACONS;
 387
 388                 /* Reset rssi stats */
 389                 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
 390                 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
 391                 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
 392                 sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
 393
 394                 /* Update chainmask */
 395                 ath_update_chainmask(sc, bss_conf->assoc_ht);
 396
 397                 DPRINTF(sc, ATH_DBG_CONFIG,
 398                         "%s: bssid %s aid 0x%x\n",
 399                         __func__,
 400                         print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
 401
 402                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
 403                         __func__,
 404                         curchan->center_freq);
 405
 406                 pos = ath_get_channel(sc, curchan);
 407                 if (pos == -1) {
 408                         DPRINTF(sc, ATH_DBG_FATAL,
 409                                 "%s: Invalid channel\n", __func__);
 410                         return;
 411                 }
 412
 413                 if (hw->conf.ht_conf.ht_supported)
 414                         sc->sc_ah->ah_channels[pos].chanmode =
 415                                 ath_get_extchanmode(sc, curchan);
 416                 else
 417                         sc->sc_ah->ah_channels[pos].chanmode =
 418                                 (curchan->band == IEEE80211_BAND_2GHZ) ?
 419                                 CHANNEL_G : CHANNEL_A;
 420
 421                 /* set h/w channel */
 422                 if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
 423                         DPRINTF(sc, ATH_DBG_FATAL,
 424                                 "%s: Unable to set channel\n",
 425                                 __func__);
 426
 427                 ath_rate_newstate(sc, avp);
 428                 /* Update ratectrl about the new state */
 429                 ath_rc_node_update(hw, avp->rc_node);
 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         if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
 461                 tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
 462                 /* free driver's private data area of tx_info */
 463                 if (tx_info->driver_data[0] != NULL)
 464                         kfree(tx_info->driver_data[0]);
 465                         tx_info->driver_data[0] = NULL;
 466         }
 467
 468         if (tx_status->flags & ATH_TX_BAR) {
 469                 tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
 470                 tx_status->flags &= ~ATH_TX_BAR;
 471         }
 472
 473         if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) {
 474                 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 475                         /* Frame was not ACKed, but an ACK was expected */
 476                         tx_info->status.excessive_retries = 1;
 477                 }
 478         } else {
 479                 /* Frame was ACKed */
 480                 tx_info->flags |= IEEE80211_TX_STAT_ACK;
 481         }
 482
 483         tx_info->status.retry_count = tx_status->retries;
 484
 485         ieee80211_tx_status(hw, skb);
 486         if (an)
 487                 ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
 488 }
 489
 490 int _ath_rx_indicate(struct ath_softc *sc,
 491                      struct sk_buff *skb,
 492                      struct ath_recv_status *status,
 493                      u16 keyix)
 494 {
 495         struct ieee80211_hw *hw = sc->hw;
 496         struct ath_node *an = NULL;
 497         struct ieee80211_rx_status rx_status;
 498         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 499         int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 500         int padsize;
 501         enum ATH_RX_TYPE st;
 502
 503         /* see if any padding is done by the hw and remove it */
 504         if (hdrlen & 3) {
 505                 padsize = hdrlen % 4;
 506                 memmove(skb->data + padsize, skb->data, hdrlen);
 507                 skb_pull(skb, padsize);
 508         }
 509
 510         /* Prepare rx status */
 511         ath9k_rx_prepare(sc, skb, status, &rx_status);
 512
 513         if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
 514             !(status->flags & ATH_RX_DECRYPT_ERROR)) {
 515                 rx_status.flag |= RX_FLAG_DECRYPTED;
 516         } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
 517                    && !(status->flags & ATH_RX_DECRYPT_ERROR)
 518                    && skb->len >= hdrlen + 4) {
 519                 keyix = skb->data[hdrlen + 3] >> 6;
 520
 521                 if (test_bit(keyix, sc->sc_keymap))
 522                         rx_status.flag |= RX_FLAG_DECRYPTED;
 523         }
 524
 525         spin_lock_bh(&sc->node_lock);
 526         an = ath_node_find(sc, hdr->addr2);
 527         spin_unlock_bh(&sc->node_lock);
 528
 529         if (an) {
 530                 ath_rx_input(sc, an,
 531                              hw->conf.ht_conf.ht_supported,
 532                              skb, status, &st);
 533         }
 534         if (!an || (st != ATH_RX_CONSUMED))
 535                 __ieee80211_rx(hw, skb, &rx_status);
 536
 537         return 0;
 538 }
 539
 540 int ath_rx_subframe(struct ath_node *an,
 541                     struct sk_buff *skb,
 542                     struct ath_recv_status *status)
 543 {
 544         struct ath_softc *sc = an->an_sc;
 545         struct ieee80211_hw *hw = sc->hw;
 546         struct ieee80211_rx_status rx_status;
 547
 548         /* Prepare rx status */
 549         ath9k_rx_prepare(sc, skb, status, &rx_status);
 550         if (!(status->flags & ATH_RX_DECRYPT_ERROR))
 551                 rx_status.flag |= RX_FLAG_DECRYPTED;
 552
 553         __ieee80211_rx(hw, skb, &rx_status);
 554
 555         return 0;
 556 }
 557
 558 /********************************/
 559 /*       LED functions          */
 560 /********************************/
 561
 562 static void ath_led_brightness(struct led_classdev *led_cdev,
 563                                enum led_brightness brightness)
 564 {
 565         struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
 566         struct ath_softc *sc = led->sc;
 567
 568         switch (brightness) {
 569         case LED_OFF:
 570                 if (led->led_type == ATH_LED_ASSOC ||
 571                     led->led_type == ATH_LED_RADIO)
 572                         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 573                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
 574                                 (led->led_type == ATH_LED_RADIO) ? 1 :
 575                                 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
 576                 break;
 577         case LED_FULL:
 578                 if (led->led_type == ATH_LED_ASSOC)
 579                         sc->sc_flags |= SC_OP_LED_ASSOCIATED;
 580                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
 581                 break;
 582         default:
 583                 break;
 584         }
 585 }
 586
 587 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
 588                             char *trigger)
 589 {
 590         int ret;
 591
 592         led->sc = sc;
 593         led->led_cdev.name = led->name;
 594         led->led_cdev.default_trigger = trigger;
 595         led->led_cdev.brightness_set = ath_led_brightness;
 596
 597         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
 598         if (ret)
 599                 DPRINTF(sc, ATH_DBG_FATAL,
 600                         "Failed to register led:%s", led->name);
 601         else
 602                 led->registered = 1;
 603         return ret;
 604 }
 605
 606 static void ath_unregister_led(struct ath_led *led)
 607 {
 608         if (led->registered) {
 609                 led_classdev_unregister(&led->led_cdev);
 610                 led->registered = 0;
 611         }
 612 }
 613
 614 static void ath_deinit_leds(struct ath_softc *sc)
 615 {
 616         ath_unregister_led(&sc->assoc_led);
 617         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 618         ath_unregister_led(&sc->tx_led);
 619         ath_unregister_led(&sc->rx_led);
 620         ath_unregister_led(&sc->radio_led);
 621         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 622 }
 623
 624 static void ath_init_leds(struct ath_softc *sc)
 625 {
 626         char *trigger;
 627         int ret;
 628
 629         /* Configure gpio 1 for output */
 630         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
 631                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 632         /* LED off, active low */
 633         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 634
 635         trigger = ieee80211_get_radio_led_name(sc->hw);
 636         snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
 637                 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
 638         ret = ath_register_led(sc, &sc->radio_led, trigger);
 639         sc->radio_led.led_type = ATH_LED_RADIO;
 640         if (ret)
 641                 goto fail;
 642
 643         trigger = ieee80211_get_assoc_led_name(sc->hw);
 644         snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
 645                 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
 646         ret = ath_register_led(sc, &sc->assoc_led, trigger);
 647         sc->assoc_led.led_type = ATH_LED_ASSOC;
 648         if (ret)
 649                 goto fail;
 650
 651         trigger = ieee80211_get_tx_led_name(sc->hw);
 652         snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
 653                 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
 654         ret = ath_register_led(sc, &sc->tx_led, trigger);
 655         sc->tx_led.led_type = ATH_LED_TX;
 656         if (ret)
 657                 goto fail;
 658
 659         trigger = ieee80211_get_rx_led_name(sc->hw);
 660         snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
 661                 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
 662         ret = ath_register_led(sc, &sc->rx_led, trigger);
 663         sc->rx_led.led_type = ATH_LED_RX;
 664         if (ret)
 665                 goto fail;
 666
 667         return;
 668
 669 fail:
 670         ath_deinit_leds(sc);
 671 }
 672
 673 #ifdef CONFIG_RFKILL
 674 /*******************/
 675 /*      Rfkill     */
 676 /*******************/
 677
 678 static void ath_radio_enable(struct ath_softc *sc)
 679 {
 680         struct ath_hal *ah = sc->sc_ah;
 681         int status;
 682
 683         spin_lock_bh(&sc->sc_resetlock);
 684         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 685                             sc->sc_ht_info.tx_chan_width,
 686                             sc->sc_tx_chainmask,
 687                             sc->sc_rx_chainmask,
 688                             sc->sc_ht_extprotspacing,
 689                             false, &status)) {
 690                 DPRINTF(sc, ATH_DBG_FATAL,
 691                         "%s: unable to reset channel %u (%uMhz) "
 692                         "flags 0x%x hal status %u\n", __func__,
 693                         ath9k_hw_mhz2ieee(ah,
 694                                           ah->ah_curchan->channel,
 695                                           ah->ah_curchan->channelFlags),
 696                         ah->ah_curchan->channel,
 697                         ah->ah_curchan->channelFlags, status);
 698         }
 699         spin_unlock_bh(&sc->sc_resetlock);
 700
 701         ath_update_txpow(sc);
 702         if (ath_startrecv(sc) != 0) {
 703                 DPRINTF(sc, ATH_DBG_FATAL,
 704                         "%s: unable to restart recv logic\n", __func__);
 705                 return;
 706         }
 707
 708         if (sc->sc_flags & SC_OP_BEACONS)
 709                 ath_beacon_config(sc, ATH_IF_ID_ANY);   /* restart beacons */
 710
 711         /* Re-Enable  interrupts */
 712         ath9k_hw_set_interrupts(ah, sc->sc_imask);
 713
 714         /* Enable LED */
 715         ath9k_hw_cfg_output(ah, ATH_LED_PIN,
 716                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 717         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
 718
 719         ieee80211_wake_queues(sc->hw);
 720 }
 721
 722 static void ath_radio_disable(struct ath_softc *sc)
 723 {
 724         struct ath_hal *ah = sc->sc_ah;
 725         int status;
 726
 727
 728         ieee80211_stop_queues(sc->hw);
 729
 730         /* Disable LED */
 731         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
 732         ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
 733
 734         /* Disable interrupts */
 735         ath9k_hw_set_interrupts(ah, 0);
 736
 737         ath_draintxq(sc, false);        /* clear pending tx frames */
 738         ath_stoprecv(sc);               /* turn off frame recv */
 739         ath_flushrecv(sc);              /* flush recv queue */
 740
 741         spin_lock_bh(&sc->sc_resetlock);
 742         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 743                             sc->sc_ht_info.tx_chan_width,
 744                             sc->sc_tx_chainmask,
 745                             sc->sc_rx_chainmask,
 746                             sc->sc_ht_extprotspacing,
 747                             false, &status)) {
 748                 DPRINTF(sc, ATH_DBG_FATAL,
 749                         "%s: unable to reset channel %u (%uMhz) "
 750                         "flags 0x%x hal status %u\n", __func__,
 751                         ath9k_hw_mhz2ieee(ah,
 752                                 ah->ah_curchan->channel,
 753                                 ah->ah_curchan->channelFlags),
 754                         ah->ah_curchan->channel,
 755                         ah->ah_curchan->channelFlags, status);
 756         }
 757         spin_unlock_bh(&sc->sc_resetlock);
 758
 759         ath9k_hw_phy_disable(ah);
 760         ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 761 }
 762
 763 static bool ath_is_rfkill_set(struct ath_softc *sc)
 764 {
 765         struct ath_hal *ah = sc->sc_ah;
 766
 767         return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
 768                                   ah->ah_rfkill_polarity;
 769 }
 770
 771 /* h/w rfkill poll function */
 772 static void ath_rfkill_poll(struct work_struct *work)
 773 {
 774         struct ath_softc *sc = container_of(work, struct ath_softc,
 775                                             rf_kill.rfkill_poll.work);
 776         bool radio_on;
 777
 778         if (sc->sc_flags & SC_OP_INVALID)
 779                 return;
 780
 781         radio_on = !ath_is_rfkill_set(sc);
 782
 783         /*
 784          * enable/disable radio only when there is a
 785          * state change in RF switch
 786          */
 787         if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
 788                 enum rfkill_state state;
 789
 790                 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
 791                         state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
 792                                 : RFKILL_STATE_HARD_BLOCKED;
 793                 } else if (radio_on) {
 794                         ath_radio_enable(sc);
 795                         state = RFKILL_STATE_UNBLOCKED;
 796                 } else {
 797                         ath_radio_disable(sc);
 798                         state = RFKILL_STATE_HARD_BLOCKED;
 799                 }
 800
 801                 if (state == RFKILL_STATE_HARD_BLOCKED)
 802                         sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
 803                 else
 804                         sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
 805
 806                 rfkill_force_state(sc->rf_kill.rfkill, state);
 807         }
 808
 809         queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
 810                            msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
 811 }
 812
 813 /* s/w rfkill handler */
 814 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
 815 {
 816         struct ath_softc *sc = data;
 817
 818         switch (state) {
 819         case RFKILL_STATE_SOFT_BLOCKED:
 820                 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
 821                     SC_OP_RFKILL_SW_BLOCKED)))
 822                         ath_radio_disable(sc);
 823                 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
 824                 return 0;
 825         case RFKILL_STATE_UNBLOCKED:
 826                 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
 827                         sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
 828                         if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
 829                                 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
 830                                         "radio as it is disabled by h/w \n");
 831                                 return -EPERM;
 832                         }
 833                         ath_radio_enable(sc);
 834                 }
 835                 return 0;
 836         default:
 837                 return -EINVAL;
 838         }
 839 }
 840
 841 /* Init s/w rfkill */
 842 static int ath_init_sw_rfkill(struct ath_softc *sc)
 843 {
 844         sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
 845                                              RFKILL_TYPE_WLAN);
 846         if (!sc->rf_kill.rfkill) {
 847                 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
 848                 return -ENOMEM;
 849         }
 850
 851         snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
 852                 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
 853         sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
 854         sc->rf_kill.rfkill->data = sc;
 855         sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
 856         sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
 857         sc->rf_kill.rfkill->user_claim_unsupported = 1;
 858
 859         return 0;
 860 }
 861
 862 /* Deinitialize rfkill */
 863 static void ath_deinit_rfkill(struct ath_softc *sc)
 864 {
 865         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 866                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
 867
 868         if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
 869                 rfkill_unregister(sc->rf_kill.rfkill);
 870                 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
 871                 sc->rf_kill.rfkill = NULL;
 872         }
 873 }
 874 #endif /* CONFIG_RFKILL */
 875
 876 static int ath_detach(struct ath_softc *sc)
 877 {
 878         struct ieee80211_hw *hw = sc->hw;
 879
 880         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 881
 882         /* Deinit LED control */
 883         ath_deinit_leds(sc);
 884
 885 #ifdef CONFIG_RFKILL
 886         /* deinit rfkill */
 887         ath_deinit_rfkill(sc);
 888 #endif
 889
 890         /* Unregister hw */
 891
 892         ieee80211_unregister_hw(hw);
 893
 894         /* unregister Rate control */
 895         ath_rate_control_unregister();
 896
 897         /* tx/rx cleanup */
 898
 899         ath_rx_cleanup(sc);
 900         ath_tx_cleanup(sc);
 901
 902         /* Deinit */
 903
 904         ath_deinit(sc);
 905
 906         return 0;
 907 }
 908
 909 static int ath_attach(u16 devid,
 910                       struct ath_softc *sc)
 911 {
 912         struct ieee80211_hw *hw = sc->hw;
 913         int error = 0;
 914
 915         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
 916
 917         error = ath_init(devid, sc);
 918         if (error != 0)
 919                 return error;
 920
 921         /* Init nodes */
 922
 923         INIT_LIST_HEAD(&sc->node_list);
 924         spin_lock_init(&sc->node_lock);
 925
 926         /* get mac address from hardware and set in mac80211 */
 927
 928         SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
 929
 930         /* setup channels and rates */
 931
 932         sc->sbands[IEEE80211_BAND_2GHZ].channels =
 933                 sc->channels[IEEE80211_BAND_2GHZ];
 934         sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
 935                 sc->rates[IEEE80211_BAND_2GHZ];
 936         sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 937
 938         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 939                 /* Setup HT capabilities for 2.4Ghz*/
 940                 setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info);
 941
 942         hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 943                 &sc->sbands[IEEE80211_BAND_2GHZ];
 944
 945         if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
 946                 sc->sbands[IEEE80211_BAND_5GHZ].channels =
 947                         sc->channels[IEEE80211_BAND_5GHZ];
 948                 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
 949                         sc->rates[IEEE80211_BAND_5GHZ];
 950                 sc->sbands[IEEE80211_BAND_5GHZ].band =
 951                         IEEE80211_BAND_5GHZ;
 952
 953                 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 954                         /* Setup HT capabilities for 5Ghz*/
 955                         setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info);
 956
 957                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 958                         &sc->sbands[IEEE80211_BAND_5GHZ];
 959         }
 960
 961         /* FIXME: Have to figure out proper hw init values later */
 962
 963         hw->queues = 4;
 964         hw->ampdu_queues = 1;
 965
 966         /* Register rate control */
 967         hw->rate_control_algorithm = "ath9k_rate_control";
 968         error = ath_rate_control_register();
 969         if (error != 0) {
 970                 DPRINTF(sc, ATH_DBG_FATAL,
 971                         "%s: Unable to register rate control "
 972                         "algorithm:%d\n", __func__, error);
 973                 ath_rate_control_unregister();
 974                 goto bad;
 975         }
 976
 977         error = ieee80211_register_hw(hw);
 978         if (error != 0) {
 979                 ath_rate_control_unregister();
 980                 goto bad;
 981         }
 982
 983         /* Initialize LED control */
 984         ath_init_leds(sc);
 985
 986 #ifdef CONFIG_RFKILL
 987         /* Initialze h/w Rfkill */
 988         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 989                 INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
 990
 991         /* Initialize s/w rfkill */
 992         if (ath_init_sw_rfkill(sc))
 993                 goto detach;
 994 #endif
 995
 996         /* initialize tx/rx engine */
 997
 998         error = ath_tx_init(sc, ATH_TXBUF);
 999         if (error != 0)
1000                 goto detach;
1001
1002         error = ath_rx_init(sc, ATH_RXBUF);
1003         if (error != 0)
1004                 goto detach;
1005
1006         return 0;
1007 detach:
1008         ath_detach(sc);
1009 bad:
1010         return error;
1011 }
1012
1013 static int ath9k_start(struct ieee80211_hw *hw)
1014 {
1015         struct ath_softc *sc = hw->priv;
1016         struct ieee80211_channel *curchan = hw->conf.channel;
1017         int error = 0, pos;
1018
1019         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
1020                 "initial channel: %d MHz\n", __func__, curchan->center_freq);
1021
1022         /* setup initial channel */
1023
1024         pos = ath_get_channel(sc, curchan);
1025         if (pos == -1) {
1026                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1027                 return -EINVAL;
1028         }
1029
1030         sc->sc_ah->ah_channels[pos].chanmode =
1031                 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
1032
1033         /* open ath_dev */
1034         error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
1035         if (error) {
1036                 DPRINTF(sc, ATH_DBG_FATAL,
1037                         "%s: Unable to complete ath_open\n", __func__);
1038                 return error;
1039         }
1040
1041 #ifdef CONFIG_RFKILL
1042         /* Start rfkill polling */
1043         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1044                 queue_delayed_work(sc->hw->workqueue,
1045                                    &sc->rf_kill.rfkill_poll, 0);
1046
1047         if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
1048                 if (rfkill_register(sc->rf_kill.rfkill)) {
1049                         DPRINTF(sc, ATH_DBG_FATAL,
1050                                         "Unable to register rfkill\n");
1051                         rfkill_free(sc->rf_kill.rfkill);
1052
1053                         /* Deinitialize the device */
1054                         if (sc->pdev->irq)
1055                                 free_irq(sc->pdev->irq, sc);
1056                         ath_detach(sc);
1057                         pci_iounmap(sc->pdev, sc->mem);
1058                         pci_release_region(sc->pdev, 0);
1059                         pci_disable_device(sc->pdev);
1060                         ieee80211_free_hw(hw);
1061                         return -EIO;
1062                 } else {
1063                         sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
1064                 }
1065         }
1066 #endif
1067
1068         ieee80211_wake_queues(hw);
1069         return 0;
1070 }
1071
1072 static int ath9k_tx(struct ieee80211_hw *hw,
1073                     struct sk_buff *skb)
1074 {
1075         struct ath_softc *sc = hw->priv;
1076         int hdrlen, padsize;
1077         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1078
1079         /*
1080          * As a temporary workaround, assign seq# here; this will likely need
1081          * to be cleaned up to work better with Beacon transmission and virtual
1082          * BSSes.
1083          */
1084         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1085                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1086                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1087                         sc->seq_no += 0x10;
1088                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1089                 hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
1090         }
1091
1092         /* Add the padding after the header if this is not already done */
1093         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1094         if (hdrlen & 3) {
1095                 padsize = hdrlen % 4;
1096                 if (skb_headroom(skb) < padsize)
1097                         return -1;
1098                 skb_push(skb, padsize);
1099                 memmove(skb->data, skb->data + padsize, hdrlen);
1100         }
1101
1102         DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
1103                 __func__,
1104                 skb);
1105
1106         if (ath_tx_start(sc, skb) != 0) {
1107                 DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
1108                 dev_kfree_skb_any(skb);
1109                 /* FIXME: Check for proper return value from ATH_DEV */
1110                 return 0;
1111         }
1112
1113         return 0;
1114 }
1115
1116 static void ath9k_stop(struct ieee80211_hw *hw)
1117 {
1118         struct ath_softc *sc = hw->priv;
1119         int error;
1120
1121         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
1122
1123         error = ath_suspend(sc);
1124         if (error)
1125                 DPRINTF(sc, ATH_DBG_CONFIG,
1126                         "%s: Device is no longer present\n", __func__);
1127
1128         ieee80211_stop_queues(hw);
1129
1130 #ifdef CONFIG_RFKILL
1131         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1132                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1133 #endif
1134 }
1135
1136 static int ath9k_add_interface(struct ieee80211_hw *hw,
1137                                struct ieee80211_if_init_conf *conf)
1138 {
1139         struct ath_softc *sc = hw->priv;
1140         int error, ic_opmode = 0;
1141
1142         /* Support only vap for now */
1143
1144         if (sc->sc_nvaps)
1145                 return -ENOBUFS;
1146
1147         switch (conf->type) {
1148         case NL80211_IFTYPE_STATION:
1149                 ic_opmode = ATH9K_M_STA;
1150                 break;
1151         case NL80211_IFTYPE_ADHOC:
1152                 ic_opmode = ATH9K_M_IBSS;
1153                 break;
1154         case NL80211_IFTYPE_AP:
1155                 ic_opmode = ATH9K_M_HOSTAP;
1156                 break;
1157         default:
1158                 DPRINTF(sc, ATH_DBG_FATAL,
1159                         "%s: Interface type %d not yet supported\n",
1160                         __func__, conf->type);
1161                 return -EOPNOTSUPP;
1162         }
1163
1164         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
1165                 __func__,
1166                 ic_opmode);
1167
1168         error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
1169         if (error) {
1170                 DPRINTF(sc, ATH_DBG_FATAL,
1171                         "%s: Unable to attach vap, error: %d\n",
1172                         __func__, error);
1173                 return error;
1174         }
1175
1176         return 0;
1177 }
1178
1179 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1180                                    struct ieee80211_if_init_conf *conf)
1181 {
1182         struct ath_softc *sc = hw->priv;
1183         struct ath_vap *avp;
1184         int error;
1185
1186         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
1187
1188         avp = sc->sc_vaps[0];
1189         if (avp == NULL) {
1190                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1191                         __func__);
1192                 return;
1193         }
1194
1195 #ifdef CONFIG_SLOW_ANT_DIV
1196         ath_slow_ant_div_stop(&sc->sc_antdiv);
1197 #endif
1198
1199         /* Update ratectrl */
1200         ath_rate_newstate(sc, avp);
1201
1202         /* Reclaim beacon resources */
1203         if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
1204             sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
1205                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1206                 ath_beacon_return(sc, avp);
1207         }
1208
1209         /* Set interrupt mask */
1210         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1211         ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
1212         sc->sc_flags &= ~SC_OP_BEACONS;
1213
1214         error = ath_vap_detach(sc, 0);
1215         if (error)
1216                 DPRINTF(sc, ATH_DBG_FATAL,
1217                         "%s: Unable to detach vap, error: %d\n",
1218                         __func__, error);
1219 }
1220
1221 static int ath9k_config(struct ieee80211_hw *hw,
1222                         struct ieee80211_conf *conf)
1223 {
1224         struct ath_softc *sc = hw->priv;
1225         struct ieee80211_channel *curchan = hw->conf.channel;
1226         int pos;
1227
1228         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
1229                 __func__,
1230                 curchan->center_freq);
1231
1232         pos = ath_get_channel(sc, curchan);
1233         if (pos == -1) {
1234                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1235                 return -EINVAL;
1236         }
1237
1238         sc->sc_ah->ah_channels[pos].chanmode =
1239                 (curchan->band == IEEE80211_BAND_2GHZ) ?
1240                 CHANNEL_G : CHANNEL_A;
1241
1242         if (sc->sc_curaid && hw->conf.ht_conf.ht_supported)
1243                 sc->sc_ah->ah_channels[pos].chanmode =
1244                         ath_get_extchanmode(sc, curchan);
1245
1246         sc->sc_config.txpowlimit = 2 * conf->power_level;
1247
1248         /* set h/w channel */
1249         if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
1250                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
1251                         __func__);
1252
1253         return 0;
1254 }
1255
1256 static int ath9k_config_interface(struct ieee80211_hw *hw,
1257                                   struct ieee80211_vif *vif,
1258                                   struct ieee80211_if_conf *conf)
1259 {
1260         struct ath_softc *sc = hw->priv;
1261         struct ath_hal *ah = sc->sc_ah;
1262         struct ath_vap *avp;
1263         u32 rfilt = 0;
1264         int error, i;
1265         DECLARE_MAC_BUF(mac);
1266
1267         avp = sc->sc_vaps[0];
1268         if (avp == NULL) {
1269                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1270                         __func__);
1271                 return -EINVAL;
1272         }
1273
1274         /* TODO: Need to decide which hw opmode to use for multi-interface
1275          * cases */
1276         if (vif->type == NL80211_IFTYPE_AP &&
1277             ah->ah_opmode != ATH9K_M_HOSTAP) {
1278                 ah->ah_opmode = ATH9K_M_HOSTAP;
1279                 ath9k_hw_setopmode(ah);
1280                 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
1281                 /* Request full reset to get hw opmode changed properly */
1282                 sc->sc_flags |= SC_OP_FULL_RESET;
1283         }
1284
1285         if ((conf->changed & IEEE80211_IFCC_BSSID) &&
1286             !is_zero_ether_addr(conf->bssid)) {
1287                 switch (vif->type) {
1288                 case NL80211_IFTYPE_STATION:
1289                 case NL80211_IFTYPE_ADHOC:
1290                         /* Update ratectrl about the new state */
1291                         ath_rate_newstate(sc, avp);
1292
1293                         /* Set BSSID */
1294                         memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
1295                         sc->sc_curaid = 0;
1296                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
1297                                                sc->sc_curaid);
1298
1299                         /* Set aggregation protection mode parameters */
1300                         sc->sc_config.ath_aggr_prot = 0;
1301
1302                         /*
1303                          * Reset our TSF so that its value is lower than the
1304                          * beacon that we are trying to catch.
1305                          * Only then hw will update its TSF register with the
1306                          * new beacon. Reset the TSF before setting the BSSID
1307                          * to avoid allowing in any frames that would update
1308                          * our TSF only to have us clear it
1309                          * immediately thereafter.
1310                          */
1311                         ath9k_hw_reset_tsf(sc->sc_ah);
1312
1313                         /* Disable BMISS interrupt when we're not associated */
1314                         ath9k_hw_set_interrupts(sc->sc_ah,
1315                                         sc->sc_imask &
1316                                         ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
1317                         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1318
1319                         DPRINTF(sc, ATH_DBG_CONFIG,
1320                                 "%s: RX filter 0x%x bssid %s aid 0x%x\n",
1321                                 __func__, rfilt,
1322                                 print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
1323
1324                         /* need to reconfigure the beacon */
1325                         sc->sc_flags &= ~SC_OP_BEACONS ;
1326
1327                         break;
1328                 default:
1329                         break;
1330                 }
1331         }
1332
1333         if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1334             ((vif->type == NL80211_IFTYPE_ADHOC) ||
1335              (vif->type == NL80211_IFTYPE_AP))) {
1336                 /*
1337                  * Allocate and setup the beacon frame.
1338                  *
1339                  * Stop any previous beacon DMA.  This may be
1340                  * necessary, for example, when an ibss merge
1341                  * causes reconfiguration; we may be called
1342                  * with beacon transmission active.
1343                  */
1344                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1345
1346                 error = ath_beacon_alloc(sc, 0);
1347                 if (error != 0)
1348                         return error;
1349
1350                 ath_beacon_sync(sc, 0);
1351         }
1352
1353         /* Check for WLAN_CAPABILITY_PRIVACY ? */
1354         if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
1355                 for (i = 0; i < IEEE80211_WEP_NKID; i++)
1356                         if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
1357                                 ath9k_hw_keysetmac(sc->sc_ah,
1358                                                    (u16)i,
1359                                                    sc->sc_curbssid);
1360         }
1361
1362         /* Only legacy IBSS for now */
1363         if (vif->type == NL80211_IFTYPE_ADHOC)
1364                 ath_update_chainmask(sc, 0);
1365
1366         return 0;
1367 }
1368
1369 #define SUPPORTED_FILTERS                       \
1370         (FIF_PROMISC_IN_BSS |                   \
1371         FIF_ALLMULTI |                          \
1372         FIF_CONTROL |                           \
1373         FIF_OTHER_BSS |                         \
1374         FIF_BCN_PRBRESP_PROMISC |               \
1375         FIF_FCSFAIL)
1376
1377 /* FIXME: sc->sc_full_reset ? */
1378 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1379                                    unsigned int changed_flags,
1380                                    unsigned int *total_flags,
1381                                    int mc_count,
1382                                    struct dev_mc_list *mclist)
1383 {
1384         struct ath_softc *sc = hw->priv;
1385         u32 rfilt;
1386
1387         changed_flags &= SUPPORTED_FILTERS;
1388         *total_flags &= SUPPORTED_FILTERS;
1389
1390         sc->rx_filter = *total_flags;
1391         rfilt = ath_calcrxfilter(sc);
1392         ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1393
1394         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1395                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1396                         ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
1397         }
1398
1399         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
1400                 __func__, sc->rx_filter);
1401 }
1402
1403 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1404                              struct ieee80211_vif *vif,
1405                              enum sta_notify_cmd cmd,
1406                              struct ieee80211_sta *sta)
1407 {
1408         struct ath_softc *sc = hw->priv;
1409         struct ath_node *an;
1410         unsigned long flags;
1411         DECLARE_MAC_BUF(mac);
1412
1413         spin_lock_irqsave(&sc->node_lock, flags);
1414         an = ath_node_find(sc, sta->addr);
1415         spin_unlock_irqrestore(&sc->node_lock, flags);
1416
1417         switch (cmd) {
1418         case STA_NOTIFY_ADD:
1419                 spin_lock_irqsave(&sc->node_lock, flags);
1420                 if (!an) {
1421                         ath_node_attach(sc, sta->addr, 0);
1422                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %s\n",
1423                                 __func__, print_mac(mac, sta->addr));
1424                 } else {
1425                         ath_node_get(sc, sta->addr);
1426                 }
1427                 spin_unlock_irqrestore(&sc->node_lock, flags);
1428                 break;
1429         case STA_NOTIFY_REMOVE:
1430                 if (!an)
1431                         DPRINTF(sc, ATH_DBG_FATAL,
1432                                 "%s: Removal of a non-existent node\n",
1433                                 __func__);
1434                 else {
1435                         ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
1436                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %s\n",
1437                                 __func__,
1438                                 print_mac(mac, sta->addr));
1439                 }
1440                 break;
1441         default:
1442                 break;
1443         }
1444 }
1445
1446 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1447                          u16 queue,
1448                          const struct ieee80211_tx_queue_params *params)
1449 {
1450         struct ath_softc *sc = hw->priv;
1451         struct ath9k_tx_queue_info qi;
1452         int ret = 0, qnum;
1453
1454         if (queue >= WME_NUM_AC)
1455                 return 0;
1456
1457         qi.tqi_aifs = params->aifs;
1458         qi.tqi_cwmin = params->cw_min;
1459         qi.tqi_cwmax = params->cw_max;
1460         qi.tqi_burstTime = params->txop;
1461         qnum = ath_get_hal_qnum(queue, sc);
1462
1463         DPRINTF(sc, ATH_DBG_CONFIG,
1464                 "%s: Configure tx [queue/halq] [%d/%d],  "
1465                 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1466                 __func__,
1467                 queue,
1468                 qnum,
1469                 params->aifs,
1470                 params->cw_min,
1471                 params->cw_max,
1472                 params->txop);
1473
1474         ret = ath_txq_update(sc, qnum, &qi);
1475         if (ret)
1476                 DPRINTF(sc, ATH_DBG_FATAL,
1477                         "%s: TXQ Update failed\n", __func__);
1478
1479         return ret;
1480 }
1481
1482 static int ath9k_set_key(struct ieee80211_hw *hw,
1483                          enum set_key_cmd cmd,
1484                          const u8 *local_addr,
1485                          const u8 *addr,
1486                          struct ieee80211_key_conf *key)
1487 {
1488         struct ath_softc *sc = hw->priv;
1489         int ret = 0;
1490
1491         DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1492
1493         switch (cmd) {
1494         case SET_KEY:
1495                 ret = ath_key_config(sc, addr, key);
1496                 if (!ret) {
1497                         set_bit(key->keyidx, sc->sc_keymap);
1498                         key->hw_key_idx = key->keyidx;
1499                         /* push IV and Michael MIC generation to stack */
1500                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1501                         if (key->alg == ALG_TKIP)
1502                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1503                 }
1504                 break;
1505         case DISABLE_KEY:
1506                 ath_key_delete(sc, key);
1507                 clear_bit(key->keyidx, sc->sc_keymap);
1508                 break;
1509         default:
1510                 ret = -EINVAL;
1511         }
1512
1513         return ret;
1514 }
1515
1516 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1517                                    struct ieee80211_vif *vif,
1518                                    struct ieee80211_bss_conf *bss_conf,
1519                                    u32 changed)
1520 {
1521         struct ath_softc *sc = hw->priv;
1522
1523         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1524                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
1525                         __func__,
1526                         bss_conf->use_short_preamble);
1527                 if (bss_conf->use_short_preamble)
1528                         sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1529                 else
1530                         sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1531         }
1532
1533         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1534                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
1535                         __func__,
1536                         bss_conf->use_cts_prot);
1537                 if (bss_conf->use_cts_prot &&
1538                     hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1539                         sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1540                 else
1541                         sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1542         }
1543
1544         if (changed & BSS_CHANGED_HT) {
1545                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n",
1546                         __func__,
1547                         bss_conf->assoc_ht);
1548                 ath9k_ht_conf(sc, bss_conf);
1549         }
1550
1551         if (changed & BSS_CHANGED_ASSOC) {
1552                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
1553                         __func__,
1554                         bss_conf->assoc);
1555                 ath9k_bss_assoc_info(sc, bss_conf);
1556         }
1557 }
1558
1559 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1560 {
1561         u64 tsf;
1562         struct ath_softc *sc = hw->priv;
1563         struct ath_hal *ah = sc->sc_ah;
1564
1565         tsf = ath9k_hw_gettsf64(ah);
1566
1567         return tsf;
1568 }
1569
1570 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1571 {
1572         struct ath_softc *sc = hw->priv;
1573         struct ath_hal *ah = sc->sc_ah;
1574
1575         ath9k_hw_reset_tsf(ah);
1576 }
1577
1578 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1579                        enum ieee80211_ampdu_mlme_action action,
1580                        struct ieee80211_sta *sta,
1581                        u16 tid, u16 *ssn)
1582 {
1583         struct ath_softc *sc = hw->priv;
1584         int ret = 0;
1585
1586         switch (action) {
1587         case IEEE80211_AMPDU_RX_START:
1588                 ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn);
1589                 if (ret < 0)
1590                         DPRINTF(sc, ATH_DBG_FATAL,
1591                                 "%s: Unable to start RX aggregation\n",
1592                                 __func__);
1593                 break;
1594         case IEEE80211_AMPDU_RX_STOP:
1595                 ret = ath_rx_aggr_stop(sc, sta->addr, tid);
1596                 if (ret < 0)
1597                         DPRINTF(sc, ATH_DBG_FATAL,
1598                                 "%s: Unable to stop RX aggregation\n",
1599                                 __func__);
1600                 break;
1601         case IEEE80211_AMPDU_TX_START:
1602                 ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn);
1603                 if (ret < 0)
1604                         DPRINTF(sc, ATH_DBG_FATAL,
1605                                 "%s: Unable to start TX aggregation\n",
1606                                 __func__);
1607                 else
1608                         ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1609                 break;
1610         case IEEE80211_AMPDU_TX_STOP:
1611                 ret = ath_tx_aggr_stop(sc, sta->addr, tid);
1612                 if (ret < 0)
1613                         DPRINTF(sc, ATH_DBG_FATAL,
1614                                 "%s: Unable to stop TX aggregation\n",
1615                                 __func__);
1616
1617                 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1618                 break;
1619         default:
1620                 DPRINTF(sc, ATH_DBG_FATAL,
1621                         "%s: Unknown AMPDU action\n", __func__);
1622         }
1623
1624         return ret;
1625 }
1626
1627 static struct ieee80211_ops ath9k_ops = {
1628         .tx                 = ath9k_tx,
1629         .start              = ath9k_start,
1630         .stop               = ath9k_stop,
1631         .add_interface      = ath9k_add_interface,
1632         .remove_interface   = ath9k_remove_interface,
1633         .config             = ath9k_config,
1634         .config_interface   = ath9k_config_interface,
1635         .configure_filter   = ath9k_configure_filter,
1636         .get_stats          = NULL,
1637         .sta_notify         = ath9k_sta_notify,
1638         .conf_tx            = ath9k_conf_tx,
1639         .get_tx_stats       = NULL,
1640         .bss_info_changed   = ath9k_bss_info_changed,
1641         .set_tim            = NULL,
1642         .set_key            = ath9k_set_key,
1643         .hw_scan            = NULL,
1644         .get_tkip_seq       = NULL,
1645         .set_rts_threshold  = NULL,
1646         .set_frag_threshold = NULL,
1647         .set_retry_limit    = NULL,
1648         .get_tsf            = ath9k_get_tsf,
1649         .reset_tsf          = ath9k_reset_tsf,
1650         .tx_last_beacon     = NULL,
1651         .ampdu_action       = ath9k_ampdu_action
1652 };
1653
1654 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1655 {
1656         void __iomem *mem;
1657         struct ath_softc *sc;
1658         struct ieee80211_hw *hw;
1659         const char *athname;
1660         u8 csz;
1661         u32 val;
1662         int ret = 0;
1663
1664         if (pci_enable_device(pdev))
1665                 return -EIO;
1666
1667         /* XXX 32-bit addressing only */
1668         if (pci_set_dma_mask(pdev, 0xffffffff)) {
1669                 printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
1670                 ret = -ENODEV;
1671                 goto bad;
1672         }
1673
1674         /*
1675          * Cache line size is used to size and align various
1676          * structures used to communicate with the hardware.
1677          */
1678         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
1679         if (csz == 0) {
1680                 /*
1681                  * Linux 2.4.18 (at least) writes the cache line size
1682                  * register as a 16-bit wide register which is wrong.
1683                  * We must have this setup properly for rx buffer
1684                  * DMA to work so force a reasonable value here if it
1685                  * comes up zero.
1686                  */
1687                 csz = L1_CACHE_BYTES / sizeof(u32);
1688                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
1689         }
1690         /*
1691          * The default setting of latency timer yields poor results,
1692          * set it to the value used by other systems. It may be worth
1693          * tweaking this setting more.
1694          */
1695         pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
1696
1697         pci_set_master(pdev);
1698
1699         /*
1700          * Disable the RETRY_TIMEOUT register (0x41) to keep
1701          * PCI Tx retries from interfering with C3 CPU state.
1702          */
1703         pci_read_config_dword(pdev, 0x40, &val);
1704         if ((val & 0x0000ff00) != 0)
1705                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1706
1707         ret = pci_request_region(pdev, 0, "ath9k");
1708         if (ret) {
1709                 dev_err(&pdev->dev, "PCI memory region reserve error\n");
1710                 ret = -ENODEV;
1711                 goto bad;
1712         }
1713
1714         mem = pci_iomap(pdev, 0, 0);
1715         if (!mem) {
1716                 printk(KERN_ERR "PCI memory map error\n") ;
1717                 ret = -EIO;
1718                 goto bad1;
1719         }
1720
1721         hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
1722         if (hw == NULL) {
1723                 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
1724                 goto bad2;
1725         }
1726
1727         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1728                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1729                 IEEE80211_HW_SIGNAL_DBM |
1730                 IEEE80211_HW_NOISE_DBM;
1731
1732         hw->wiphy->interface_modes =
1733                 BIT(NL80211_IFTYPE_AP) |
1734                 BIT(NL80211_IFTYPE_STATION) |
1735                 BIT(NL80211_IFTYPE_ADHOC);
1736
1737         SET_IEEE80211_DEV(hw, &pdev->dev);
1738         pci_set_drvdata(pdev, hw);
1739
1740         sc = hw->priv;
1741         sc->hw = hw;
1742         sc->pdev = pdev;
1743         sc->mem = mem;
1744
1745         if (ath_attach(id->device, sc) != 0) {
1746                 ret = -ENODEV;
1747                 goto bad3;
1748         }
1749
1750         /* setup interrupt service routine */
1751
1752         if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
1753                 printk(KERN_ERR "%s: request_irq failed\n",
1754                         wiphy_name(hw->wiphy));
1755                 ret = -EIO;
1756                 goto bad4;
1757         }
1758
1759         athname = ath9k_hw_probe(id->vendor, id->device);
1760
1761         printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
1762                wiphy_name(hw->wiphy),
1763                athname ? athname : "Atheros ???",
1764                (unsigned long)mem, pdev->irq);
1765
1766         return 0;
1767 bad4:
1768         ath_detach(sc);
1769 bad3:
1770         ieee80211_free_hw(hw);
1771 bad2:
1772         pci_iounmap(pdev, mem);
1773 bad1:
1774         pci_release_region(pdev, 0);
1775 bad:
1776         pci_disable_device(pdev);
1777         return ret;
1778 }
1779
1780 static void ath_pci_remove(struct pci_dev *pdev)
1781 {
1782         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1783         struct ath_softc *sc = hw->priv;
1784         enum ath9k_int status;
1785
1786         if (pdev->irq) {
1787                 ath9k_hw_set_interrupts(sc->sc_ah, 0);
1788                 /* clear the ISR */
1789                 ath9k_hw_getisr(sc->sc_ah, &status);
1790                 sc->sc_flags |= SC_OP_INVALID;
1791                 free_irq(pdev->irq, sc);
1792         }
1793         ath_detach(sc);
1794
1795         pci_iounmap(pdev, sc->mem);
1796         pci_release_region(pdev, 0);
1797         pci_disable_device(pdev);
1798         ieee80211_free_hw(hw);
1799 }
1800
1801 #ifdef CONFIG_PM
1802
1803 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1804 {
1805         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1806         struct ath_softc *sc = hw->priv;
1807
1808         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1809
1810 #ifdef CONFIG_RFKILL
1811         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1812                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1813 #endif
1814
1815         pci_save_state(pdev);
1816         pci_disable_device(pdev);
1817         pci_set_power_state(pdev, 3);
1818
1819         return 0;
1820 }
1821
1822 static int ath_pci_resume(struct pci_dev *pdev)
1823 {
1824         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1825         struct ath_softc *sc = hw->priv;
1826         u32 val;
1827         int err;
1828
1829         err = pci_enable_device(pdev);
1830         if (err)
1831                 return err;
1832         pci_restore_state(pdev);
1833         /*
1834          * Suspend/Resume resets the PCI configuration space, so we have to
1835          * re-disable the RETRY_TIMEOUT register (0x41) to keep
1836          * PCI Tx retries from interfering with C3 CPU state
1837          */
1838         pci_read_config_dword(pdev, 0x40, &val);
1839         if ((val & 0x0000ff00) != 0)
1840                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1841
1842         /* Enable LED */
1843         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1844                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1845         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1846
1847 #ifdef CONFIG_RFKILL
1848         /*
1849          * check the h/w rfkill state on resume
1850          * and start the rfkill poll timer
1851          */
1852         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1853                 queue_delayed_work(sc->hw->workqueue,
1854                                    &sc->rf_kill.rfkill_poll, 0);
1855 #endif
1856
1857         return 0;
1858 }
1859
1860 #endif /* CONFIG_PM */
1861
1862 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
1863
1864 static struct pci_driver ath_pci_driver = {
1865         .name       = "ath9k",
1866         .id_table   = ath_pci_id_table,
1867         .probe      = ath_pci_probe,
1868         .remove     = ath_pci_remove,
1869 #ifdef CONFIG_PM
1870         .suspend    = ath_pci_suspend,
1871         .resume     = ath_pci_resume,
1872 #endif /* CONFIG_PM */
1873 };
1874
1875 static int __init init_ath_pci(void)
1876 {
1877         printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
1878
1879         if (pci_register_driver(&ath_pci_driver) < 0) {
1880                 printk(KERN_ERR
1881                         "ath_pci: No devices found, driver not installed.\n");
1882                 pci_unregister_driver(&ath_pci_driver);
1883                 return -ENODEV;
1884         }
1885
1886         return 0;
1887 }
1888 module_init(init_ath_pci);
1889
1890 static void __exit exit_ath_pci(void)
1891 {
1892         pci_unregister_driver(&ath_pci_driver);
1893         printk(KERN_INFO "%s: driver unloaded\n", dev_info);
1894 }
1895 module_exit(exit_ath_pci);