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 = 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         /* XXX Fix me, 64 cannot be the max rssi value, rigure it out */
 283         rx_status->qual = status->rssi * 100 / 64;
 284
 285         if (status->flags & ATH_RX_MIC_ERROR)
 286                 rx_status->flag |= RX_FLAG_MMIC_ERROR;
 287         if (status->flags & ATH_RX_FCS_ERROR)
 288                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 289
 290         rx_status->flag |= RX_FLAG_TSFT;
 291 }
 292
 293 static u8 parse_mpdudensity(u8 mpdudensity)
 294 {
 295         /*
 296          * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 297          *   0 for no restriction
 298          *   1 for 1/4 us
 299          *   2 for 1/2 us
 300          *   3 for 1 us
 301          *   4 for 2 us
 302          *   5 for 4 us
 303          *   6 for 8 us
 304          *   7 for 16 us
 305          */
 306         switch (mpdudensity) {
 307         case 0:
 308                 return 0;
 309         case 1:
 310         case 2:
 311         case 3:
 312                 /* Our lower layer calculations limit our precision to
 313                    1 microsecond */
 314                 return 1;
 315         case 4:
 316                 return 2;
 317         case 5:
 318                 return 4;
 319         case 6:
 320                 return 8;
 321         case 7:
 322                 return 16;
 323         default:
 324                 return 0;
 325         }
 326 }
 327
 328 static void ath9k_ht_conf(struct ath_softc *sc,
 329                           struct ieee80211_bss_conf *bss_conf)
 330 {
 331 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT BIT(14)
 332         struct ath_ht_info *ht_info = &sc->sc_ht_info;
 333
 334         if (bss_conf->assoc_ht) {
 335                 ht_info->ext_chan_offset =
 336                         bss_conf->ht_bss_conf->bss_cap &
 337                                 IEEE80211_HT_IE_CHA_SEC_OFFSET;
 338
 339                 if (!(bss_conf->ht_conf->cap &
 340                         IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
 341                             (bss_conf->ht_bss_conf->bss_cap &
 342                                 IEEE80211_HT_IE_CHA_WIDTH))
 343                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
 344                 else
 345                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
 346
 347                 ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
 348                 ht_info->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
 349                                         bss_conf->ht_conf->ampdu_factor);
 350                 ht_info->mpdudensity =
 351                         parse_mpdudensity(bss_conf->ht_conf->ampdu_density);
 352
 353         }
 354
 355 #undef IEEE80211_HT_CAP_40MHZ_INTOLERANT
 356 }
 357
 358 static void ath9k_bss_assoc_info(struct ath_softc *sc,
 359                                  struct ieee80211_bss_conf *bss_conf)
 360 {
 361         struct ieee80211_hw *hw = sc->hw;
 362         struct ieee80211_channel *curchan = hw->conf.channel;
 363         struct ath_vap *avp;
 364         int pos;
 365         DECLARE_MAC_BUF(mac);
 366
 367         if (bss_conf->assoc) {
 368                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
 369                         __func__,
 370                         bss_conf->aid);
 371
 372                 avp = sc->sc_vaps[0];
 373                 if (avp == NULL) {
 374                         DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
 375                                 __func__);
 376                         return;
 377                 }
 378
 379                 /* New association, store aid */
 380                 if (avp->av_opmode == ATH9K_M_STA) {
 381                         sc->sc_curaid = bss_conf->aid;
 382                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
 383                                                sc->sc_curaid);
 384                 }
 385
 386                 /* Configure the beacon */
 387                 ath_beacon_config(sc, 0);
 388                 sc->sc_flags |= SC_OP_BEACONS;
 389
 390                 /* Reset rssi stats */
 391                 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
 392                 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
 393                 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
 394                 sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
 395
 396                 /* Update chainmask */
 397                 ath_update_chainmask(sc, bss_conf->assoc_ht);
 398
 399                 DPRINTF(sc, ATH_DBG_CONFIG,
 400                         "%s: bssid %s aid 0x%x\n",
 401                         __func__,
 402                         print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
 403
 404                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
 405                         __func__,
 406                         curchan->center_freq);
 407
 408                 pos = ath_get_channel(sc, curchan);
 409                 if (pos == -1) {
 410                         DPRINTF(sc, ATH_DBG_FATAL,
 411                                 "%s: Invalid channel\n", __func__);
 412                         return;
 413                 }
 414
 415                 if (hw->conf.ht_conf.ht_supported)
 416                         sc->sc_ah->ah_channels[pos].chanmode =
 417                                 ath_get_extchanmode(sc, curchan);
 418                 else
 419                         sc->sc_ah->ah_channels[pos].chanmode =
 420                                 (curchan->band == IEEE80211_BAND_2GHZ) ?
 421                                 CHANNEL_G : CHANNEL_A;
 422
 423                 /* set h/w channel */
 424                 if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
 425                         DPRINTF(sc, ATH_DBG_FATAL,
 426                                 "%s: Unable to set channel\n",
 427                                 __func__);
 428
 429                 ath_rate_newstate(sc, avp);
 430                 /* Update ratectrl about the new state */
 431                 ath_rc_node_update(hw, avp->rc_node);
 432
 433                 /* Start ANI */
 434                 mod_timer(&sc->sc_ani.timer,
 435                         jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
 436
 437         } else {
 438                 DPRINTF(sc, ATH_DBG_CONFIG,
 439                 "%s: Bss Info DISSOC\n", __func__);
 440                 sc->sc_curaid = 0;
 441         }
 442 }
 443
 444 void ath_get_beaconconfig(struct ath_softc *sc,
 445                           int if_id,
 446                           struct ath_beacon_config *conf)
 447 {
 448         struct ieee80211_hw *hw = sc->hw;
 449
 450         /* fill in beacon config data */
 451
 452         conf->beacon_interval = hw->conf.beacon_int;
 453         conf->listen_interval = 100;
 454         conf->dtim_count = 1;
 455         conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
 456 }
 457
 458 void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
 459                      struct ath_xmit_status *tx_status, struct ath_node *an)
 460 {
 461         struct ieee80211_hw *hw = sc->hw;
 462         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 463
 464         DPRINTF(sc, ATH_DBG_XMIT,
 465                 "%s: TX complete: skb: %p\n", __func__, skb);
 466
 467         if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
 468                 tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
 469                 /* free driver's private data area of tx_info */
 470                 if (tx_info->driver_data[0] != NULL)
 471                         kfree(tx_info->driver_data[0]);
 472                         tx_info->driver_data[0] = NULL;
 473         }
 474
 475         if (tx_status->flags & ATH_TX_BAR) {
 476                 tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
 477                 tx_status->flags &= ~ATH_TX_BAR;
 478         }
 479
 480         if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) {
 481                 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 482                         /* Frame was not ACKed, but an ACK was expected */
 483                         tx_info->status.excessive_retries = 1;
 484                 }
 485         } else {
 486                 /* Frame was ACKed */
 487                 tx_info->flags |= IEEE80211_TX_STAT_ACK;
 488         }
 489
 490         tx_info->status.retry_count = tx_status->retries;
 491
 492         ieee80211_tx_status(hw, skb);
 493         if (an)
 494                 ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
 495 }
 496
 497 int _ath_rx_indicate(struct ath_softc *sc,
 498                      struct sk_buff *skb,
 499                      struct ath_recv_status *status,
 500                      u16 keyix)
 501 {
 502         struct ieee80211_hw *hw = sc->hw;
 503         struct ath_node *an = NULL;
 504         struct ieee80211_rx_status rx_status;
 505         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 506         int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 507         int padsize;
 508         enum ATH_RX_TYPE st;
 509
 510         /* see if any padding is done by the hw and remove it */
 511         if (hdrlen & 3) {
 512                 padsize = hdrlen % 4;
 513                 memmove(skb->data + padsize, skb->data, hdrlen);
 514                 skb_pull(skb, padsize);
 515         }
 516
 517         /* Prepare rx status */
 518         ath9k_rx_prepare(sc, skb, status, &rx_status);
 519
 520         if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
 521             !(status->flags & ATH_RX_DECRYPT_ERROR)) {
 522                 rx_status.flag |= RX_FLAG_DECRYPTED;
 523         } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
 524                    && !(status->flags & ATH_RX_DECRYPT_ERROR)
 525                    && skb->len >= hdrlen + 4) {
 526                 keyix = skb->data[hdrlen + 3] >> 6;
 527
 528                 if (test_bit(keyix, sc->sc_keymap))
 529                         rx_status.flag |= RX_FLAG_DECRYPTED;
 530         }
 531
 532         spin_lock_bh(&sc->node_lock);
 533         an = ath_node_find(sc, hdr->addr2);
 534         spin_unlock_bh(&sc->node_lock);
 535
 536         if (an) {
 537                 ath_rx_input(sc, an,
 538                              hw->conf.ht_conf.ht_supported,
 539                              skb, status, &st);
 540         }
 541         if (!an || (st != ATH_RX_CONSUMED))
 542                 __ieee80211_rx(hw, skb, &rx_status);
 543
 544         return 0;
 545 }
 546
 547 int ath_rx_subframe(struct ath_node *an,
 548                     struct sk_buff *skb,
 549                     struct ath_recv_status *status)
 550 {
 551         struct ath_softc *sc = an->an_sc;
 552         struct ieee80211_hw *hw = sc->hw;
 553         struct ieee80211_rx_status rx_status;
 554
 555         /* Prepare rx status */
 556         ath9k_rx_prepare(sc, skb, status, &rx_status);
 557         if (!(status->flags & ATH_RX_DECRYPT_ERROR))
 558                 rx_status.flag |= RX_FLAG_DECRYPTED;
 559
 560         __ieee80211_rx(hw, skb, &rx_status);
 561
 562         return 0;
 563 }
 564
 565 /********************************/
 566 /*       LED functions          */
 567 /********************************/
 568
 569 static void ath_led_brightness(struct led_classdev *led_cdev,
 570                                enum led_brightness brightness)
 571 {
 572         struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
 573         struct ath_softc *sc = led->sc;
 574
 575         switch (brightness) {
 576         case LED_OFF:
 577                 if (led->led_type == ATH_LED_ASSOC ||
 578                     led->led_type == ATH_LED_RADIO)
 579                         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 580                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
 581                                 (led->led_type == ATH_LED_RADIO) ? 1 :
 582                                 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
 583                 break;
 584         case LED_FULL:
 585                 if (led->led_type == ATH_LED_ASSOC)
 586                         sc->sc_flags |= SC_OP_LED_ASSOCIATED;
 587                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
 588                 break;
 589         default:
 590                 break;
 591         }
 592 }
 593
 594 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
 595                             char *trigger)
 596 {
 597         int ret;
 598
 599         led->sc = sc;
 600         led->led_cdev.name = led->name;
 601         led->led_cdev.default_trigger = trigger;
 602         led->led_cdev.brightness_set = ath_led_brightness;
 603
 604         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
 605         if (ret)
 606                 DPRINTF(sc, ATH_DBG_FATAL,
 607                         "Failed to register led:%s", led->name);
 608         else
 609                 led->registered = 1;
 610         return ret;
 611 }
 612
 613 static void ath_unregister_led(struct ath_led *led)
 614 {
 615         if (led->registered) {
 616                 led_classdev_unregister(&led->led_cdev);
 617                 led->registered = 0;
 618         }
 619 }
 620
 621 static void ath_deinit_leds(struct ath_softc *sc)
 622 {
 623         ath_unregister_led(&sc->assoc_led);
 624         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 625         ath_unregister_led(&sc->tx_led);
 626         ath_unregister_led(&sc->rx_led);
 627         ath_unregister_led(&sc->radio_led);
 628         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 629 }
 630
 631 static void ath_init_leds(struct ath_softc *sc)
 632 {
 633         char *trigger;
 634         int ret;
 635
 636         /* Configure gpio 1 for output */
 637         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
 638                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 639         /* LED off, active low */
 640         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 641
 642         trigger = ieee80211_get_radio_led_name(sc->hw);
 643         snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
 644                 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
 645         ret = ath_register_led(sc, &sc->radio_led, trigger);
 646         sc->radio_led.led_type = ATH_LED_RADIO;
 647         if (ret)
 648                 goto fail;
 649
 650         trigger = ieee80211_get_assoc_led_name(sc->hw);
 651         snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
 652                 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
 653         ret = ath_register_led(sc, &sc->assoc_led, trigger);
 654         sc->assoc_led.led_type = ATH_LED_ASSOC;
 655         if (ret)
 656                 goto fail;
 657
 658         trigger = ieee80211_get_tx_led_name(sc->hw);
 659         snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
 660                 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
 661         ret = ath_register_led(sc, &sc->tx_led, trigger);
 662         sc->tx_led.led_type = ATH_LED_TX;
 663         if (ret)
 664                 goto fail;
 665
 666         trigger = ieee80211_get_rx_led_name(sc->hw);
 667         snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
 668                 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
 669         ret = ath_register_led(sc, &sc->rx_led, trigger);
 670         sc->rx_led.led_type = ATH_LED_RX;
 671         if (ret)
 672                 goto fail;
 673
 674         return;
 675
 676 fail:
 677         ath_deinit_leds(sc);
 678 }
 679
 680 #ifdef CONFIG_RFKILL
 681 /*******************/
 682 /*      Rfkill     */
 683 /*******************/
 684
 685 static void ath_radio_enable(struct ath_softc *sc)
 686 {
 687         struct ath_hal *ah = sc->sc_ah;
 688         int status;
 689
 690         spin_lock_bh(&sc->sc_resetlock);
 691         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 692                             sc->sc_ht_info.tx_chan_width,
 693                             sc->sc_tx_chainmask,
 694                             sc->sc_rx_chainmask,
 695                             sc->sc_ht_extprotspacing,
 696                             false, &status)) {
 697                 DPRINTF(sc, ATH_DBG_FATAL,
 698                         "%s: unable to reset channel %u (%uMhz) "
 699                         "flags 0x%x hal status %u\n", __func__,
 700                         ath9k_hw_mhz2ieee(ah,
 701                                           ah->ah_curchan->channel,
 702                                           ah->ah_curchan->channelFlags),
 703                         ah->ah_curchan->channel,
 704                         ah->ah_curchan->channelFlags, status);
 705         }
 706         spin_unlock_bh(&sc->sc_resetlock);
 707
 708         ath_update_txpow(sc);
 709         if (ath_startrecv(sc) != 0) {
 710                 DPRINTF(sc, ATH_DBG_FATAL,
 711                         "%s: unable to restart recv logic\n", __func__);
 712                 return;
 713         }
 714
 715         if (sc->sc_flags & SC_OP_BEACONS)
 716                 ath_beacon_config(sc, ATH_IF_ID_ANY);   /* restart beacons */
 717
 718         /* Re-Enable  interrupts */
 719         ath9k_hw_set_interrupts(ah, sc->sc_imask);
 720
 721         /* Enable LED */
 722         ath9k_hw_cfg_output(ah, ATH_LED_PIN,
 723                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 724         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
 725
 726         ieee80211_wake_queues(sc->hw);
 727 }
 728
 729 static void ath_radio_disable(struct ath_softc *sc)
 730 {
 731         struct ath_hal *ah = sc->sc_ah;
 732         int status;
 733
 734
 735         ieee80211_stop_queues(sc->hw);
 736
 737         /* Disable LED */
 738         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
 739         ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
 740
 741         /* Disable interrupts */
 742         ath9k_hw_set_interrupts(ah, 0);
 743
 744         ath_draintxq(sc, false);        /* clear pending tx frames */
 745         ath_stoprecv(sc);               /* turn off frame recv */
 746         ath_flushrecv(sc);              /* flush recv queue */
 747
 748         spin_lock_bh(&sc->sc_resetlock);
 749         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 750                             sc->sc_ht_info.tx_chan_width,
 751                             sc->sc_tx_chainmask,
 752                             sc->sc_rx_chainmask,
 753                             sc->sc_ht_extprotspacing,
 754                             false, &status)) {
 755                 DPRINTF(sc, ATH_DBG_FATAL,
 756                         "%s: unable to reset channel %u (%uMhz) "
 757                         "flags 0x%x hal status %u\n", __func__,
 758                         ath9k_hw_mhz2ieee(ah,
 759                                 ah->ah_curchan->channel,
 760                                 ah->ah_curchan->channelFlags),
 761                         ah->ah_curchan->channel,
 762                         ah->ah_curchan->channelFlags, status);
 763         }
 764         spin_unlock_bh(&sc->sc_resetlock);
 765
 766         ath9k_hw_phy_disable(ah);
 767         ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 768 }
 769
 770 static bool ath_is_rfkill_set(struct ath_softc *sc)
 771 {
 772         struct ath_hal *ah = sc->sc_ah;
 773
 774         return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
 775                                   ah->ah_rfkill_polarity;
 776 }
 777
 778 /* h/w rfkill poll function */
 779 static void ath_rfkill_poll(struct work_struct *work)
 780 {
 781         struct ath_softc *sc = container_of(work, struct ath_softc,
 782                                             rf_kill.rfkill_poll.work);
 783         bool radio_on;
 784
 785         if (sc->sc_flags & SC_OP_INVALID)
 786                 return;
 787
 788         radio_on = !ath_is_rfkill_set(sc);
 789
 790         /*
 791          * enable/disable radio only when there is a
 792          * state change in RF switch
 793          */
 794         if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
 795                 enum rfkill_state state;
 796
 797                 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
 798                         state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
 799                                 : RFKILL_STATE_HARD_BLOCKED;
 800                 } else if (radio_on) {
 801                         ath_radio_enable(sc);
 802                         state = RFKILL_STATE_UNBLOCKED;
 803                 } else {
 804                         ath_radio_disable(sc);
 805                         state = RFKILL_STATE_HARD_BLOCKED;
 806                 }
 807
 808                 if (state == RFKILL_STATE_HARD_BLOCKED)
 809                         sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
 810                 else
 811                         sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
 812
 813                 rfkill_force_state(sc->rf_kill.rfkill, state);
 814         }
 815
 816         queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
 817                            msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
 818 }
 819
 820 /* s/w rfkill handler */
 821 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
 822 {
 823         struct ath_softc *sc = data;
 824
 825         switch (state) {
 826         case RFKILL_STATE_SOFT_BLOCKED:
 827                 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
 828                     SC_OP_RFKILL_SW_BLOCKED)))
 829                         ath_radio_disable(sc);
 830                 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
 831                 return 0;
 832         case RFKILL_STATE_UNBLOCKED:
 833                 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
 834                         sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
 835                         if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
 836                                 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
 837                                         "radio as it is disabled by h/w \n");
 838                                 return -EPERM;
 839                         }
 840                         ath_radio_enable(sc);
 841                 }
 842                 return 0;
 843         default:
 844                 return -EINVAL;
 845         }
 846 }
 847
 848 /* Init s/w rfkill */
 849 static int ath_init_sw_rfkill(struct ath_softc *sc)
 850 {
 851         sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
 852                                              RFKILL_TYPE_WLAN);
 853         if (!sc->rf_kill.rfkill) {
 854                 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
 855                 return -ENOMEM;
 856         }
 857
 858         snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
 859                 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
 860         sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
 861         sc->rf_kill.rfkill->data = sc;
 862         sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
 863         sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
 864         sc->rf_kill.rfkill->user_claim_unsupported = 1;
 865
 866         return 0;
 867 }
 868
 869 /* Deinitialize rfkill */
 870 static void ath_deinit_rfkill(struct ath_softc *sc)
 871 {
 872         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 873                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
 874
 875         if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
 876                 rfkill_unregister(sc->rf_kill.rfkill);
 877                 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
 878                 sc->rf_kill.rfkill = NULL;
 879         }
 880 }
 881 #endif /* CONFIG_RFKILL */
 882
 883 static int ath_detach(struct ath_softc *sc)
 884 {
 885         struct ieee80211_hw *hw = sc->hw;
 886
 887         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 888
 889         /* Deinit LED control */
 890         ath_deinit_leds(sc);
 891
 892 #ifdef CONFIG_RFKILL
 893         /* deinit rfkill */
 894         ath_deinit_rfkill(sc);
 895 #endif
 896
 897         /* Unregister hw */
 898
 899         ieee80211_unregister_hw(hw);
 900
 901         /* unregister Rate control */
 902         ath_rate_control_unregister();
 903
 904         /* tx/rx cleanup */
 905
 906         ath_rx_cleanup(sc);
 907         ath_tx_cleanup(sc);
 908
 909         /* Deinit */
 910
 911         ath_deinit(sc);
 912
 913         return 0;
 914 }
 915
 916 static int ath_attach(u16 devid,
 917                       struct ath_softc *sc)
 918 {
 919         struct ieee80211_hw *hw = sc->hw;
 920         int error = 0;
 921
 922         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
 923
 924         error = ath_init(devid, sc);
 925         if (error != 0)
 926                 return error;
 927
 928         /* Init nodes */
 929
 930         INIT_LIST_HEAD(&sc->node_list);
 931         spin_lock_init(&sc->node_lock);
 932
 933         /* get mac address from hardware and set in mac80211 */
 934
 935         SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
 936
 937         /* setup channels and rates */
 938
 939         sc->sbands[IEEE80211_BAND_2GHZ].channels =
 940                 sc->channels[IEEE80211_BAND_2GHZ];
 941         sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
 942                 sc->rates[IEEE80211_BAND_2GHZ];
 943         sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 944
 945         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 946                 /* Setup HT capabilities for 2.4Ghz*/
 947                 setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info);
 948
 949         hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 950                 &sc->sbands[IEEE80211_BAND_2GHZ];
 951
 952         if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
 953                 sc->sbands[IEEE80211_BAND_5GHZ].channels =
 954                         sc->channels[IEEE80211_BAND_5GHZ];
 955                 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
 956                         sc->rates[IEEE80211_BAND_5GHZ];
 957                 sc->sbands[IEEE80211_BAND_5GHZ].band =
 958                         IEEE80211_BAND_5GHZ;
 959
 960                 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 961                         /* Setup HT capabilities for 5Ghz*/
 962                         setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info);
 963
 964                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 965                         &sc->sbands[IEEE80211_BAND_5GHZ];
 966         }
 967
 968         /* FIXME: Have to figure out proper hw init values later */
 969
 970         hw->queues = 4;
 971         hw->ampdu_queues = 1;
 972
 973         /* Register rate control */
 974         hw->rate_control_algorithm = "ath9k_rate_control";
 975         error = ath_rate_control_register();
 976         if (error != 0) {
 977                 DPRINTF(sc, ATH_DBG_FATAL,
 978                         "%s: Unable to register rate control "
 979                         "algorithm:%d\n", __func__, error);
 980                 ath_rate_control_unregister();
 981                 goto bad;
 982         }
 983
 984         error = ieee80211_register_hw(hw);
 985         if (error != 0) {
 986                 ath_rate_control_unregister();
 987                 goto bad;
 988         }
 989
 990         /* Initialize LED control */
 991         ath_init_leds(sc);
 992
 993 #ifdef CONFIG_RFKILL
 994         /* Initialze h/w Rfkill */
 995         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 996                 INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
 997
 998         /* Initialize s/w rfkill */
 999         if (ath_init_sw_rfkill(sc))
1000                 goto detach;
1001 #endif
1002
1003         /* initialize tx/rx engine */
1004
1005         error = ath_tx_init(sc, ATH_TXBUF);
1006         if (error != 0)
1007                 goto detach;
1008
1009         error = ath_rx_init(sc, ATH_RXBUF);
1010         if (error != 0)
1011                 goto detach;
1012
1013         return 0;
1014 detach:
1015         ath_detach(sc);
1016 bad:
1017         return error;
1018 }
1019
1020 static int ath9k_start(struct ieee80211_hw *hw)
1021 {
1022         struct ath_softc *sc = hw->priv;
1023         struct ieee80211_channel *curchan = hw->conf.channel;
1024         int error = 0, pos;
1025
1026         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
1027                 "initial channel: %d MHz\n", __func__, curchan->center_freq);
1028
1029         /* setup initial channel */
1030
1031         pos = ath_get_channel(sc, curchan);
1032         if (pos == -1) {
1033                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1034                 return -EINVAL;
1035         }
1036
1037         sc->sc_ah->ah_channels[pos].chanmode =
1038                 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
1039
1040         /* open ath_dev */
1041         error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
1042         if (error) {
1043                 DPRINTF(sc, ATH_DBG_FATAL,
1044                         "%s: Unable to complete ath_open\n", __func__);
1045                 return error;
1046         }
1047
1048 #ifdef CONFIG_RFKILL
1049         /* Start rfkill polling */
1050         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1051                 queue_delayed_work(sc->hw->workqueue,
1052                                    &sc->rf_kill.rfkill_poll, 0);
1053
1054         if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
1055                 if (rfkill_register(sc->rf_kill.rfkill)) {
1056                         DPRINTF(sc, ATH_DBG_FATAL,
1057                                         "Unable to register rfkill\n");
1058                         rfkill_free(sc->rf_kill.rfkill);
1059
1060                         /* Deinitialize the device */
1061                         if (sc->pdev->irq)
1062                                 free_irq(sc->pdev->irq, sc);
1063                         ath_detach(sc);
1064                         pci_iounmap(sc->pdev, sc->mem);
1065                         pci_release_region(sc->pdev, 0);
1066                         pci_disable_device(sc->pdev);
1067                         ieee80211_free_hw(hw);
1068                         return -EIO;
1069                 } else {
1070                         sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
1071                 }
1072         }
1073 #endif
1074
1075         ieee80211_wake_queues(hw);
1076         return 0;
1077 }
1078
1079 static int ath9k_tx(struct ieee80211_hw *hw,
1080                     struct sk_buff *skb)
1081 {
1082         struct ath_softc *sc = hw->priv;
1083         int hdrlen, padsize;
1084         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1085
1086         /*
1087          * As a temporary workaround, assign seq# here; this will likely need
1088          * to be cleaned up to work better with Beacon transmission and virtual
1089          * BSSes.
1090          */
1091         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1092                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1093                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1094                         sc->seq_no += 0x10;
1095                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1096                 hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
1097         }
1098
1099         /* Add the padding after the header if this is not already done */
1100         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1101         if (hdrlen & 3) {
1102                 padsize = hdrlen % 4;
1103                 if (skb_headroom(skb) < padsize)
1104                         return -1;
1105                 skb_push(skb, padsize);
1106                 memmove(skb->data, skb->data + padsize, hdrlen);
1107         }
1108
1109         DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
1110                 __func__,
1111                 skb);
1112
1113         if (ath_tx_start(sc, skb) != 0) {
1114                 DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
1115                 dev_kfree_skb_any(skb);
1116                 /* FIXME: Check for proper return value from ATH_DEV */
1117                 return 0;
1118         }
1119
1120         return 0;
1121 }
1122
1123 static void ath9k_stop(struct ieee80211_hw *hw)
1124 {
1125         struct ath_softc *sc = hw->priv;
1126         int error;
1127
1128         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
1129
1130         error = ath_suspend(sc);
1131         if (error)
1132                 DPRINTF(sc, ATH_DBG_CONFIG,
1133                         "%s: Device is no longer present\n", __func__);
1134
1135         ieee80211_stop_queues(hw);
1136
1137 #ifdef CONFIG_RFKILL
1138         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1139                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1140 #endif
1141 }
1142
1143 static int ath9k_add_interface(struct ieee80211_hw *hw,
1144                                struct ieee80211_if_init_conf *conf)
1145 {
1146         struct ath_softc *sc = hw->priv;
1147         int error, ic_opmode = 0;
1148
1149         /* Support only vap for now */
1150
1151         if (sc->sc_nvaps)
1152                 return -ENOBUFS;
1153
1154         switch (conf->type) {
1155         case NL80211_IFTYPE_STATION:
1156                 ic_opmode = ATH9K_M_STA;
1157                 break;
1158         case NL80211_IFTYPE_ADHOC:
1159                 ic_opmode = ATH9K_M_IBSS;
1160                 break;
1161         case NL80211_IFTYPE_AP:
1162                 ic_opmode = ATH9K_M_HOSTAP;
1163                 break;
1164         default:
1165                 DPRINTF(sc, ATH_DBG_FATAL,
1166                         "%s: Interface type %d not yet supported\n",
1167                         __func__, conf->type);
1168                 return -EOPNOTSUPP;
1169         }
1170
1171         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
1172                 __func__,
1173                 ic_opmode);
1174
1175         error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
1176         if (error) {
1177                 DPRINTF(sc, ATH_DBG_FATAL,
1178                         "%s: Unable to attach vap, error: %d\n",
1179                         __func__, error);
1180                 return error;
1181         }
1182
1183         if (conf->type == NL80211_IFTYPE_AP) {
1184                 /* TODO: is this a suitable place to start ANI for AP mode? */
1185                 /* Start ANI */
1186                 mod_timer(&sc->sc_ani.timer,
1187                           jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
1188         }
1189
1190         return 0;
1191 }
1192
1193 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1194                                    struct ieee80211_if_init_conf *conf)
1195 {
1196         struct ath_softc *sc = hw->priv;
1197         struct ath_vap *avp;
1198         int error;
1199
1200         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
1201
1202         avp = sc->sc_vaps[0];
1203         if (avp == NULL) {
1204                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1205                         __func__);
1206                 return;
1207         }
1208
1209 #ifdef CONFIG_SLOW_ANT_DIV
1210         ath_slow_ant_div_stop(&sc->sc_antdiv);
1211 #endif
1212         /* Stop ANI */
1213         del_timer_sync(&sc->sc_ani.timer);
1214
1215         /* Update ratectrl */
1216         ath_rate_newstate(sc, avp);
1217
1218         /* Reclaim beacon resources */
1219         if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
1220             sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
1221                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1222                 ath_beacon_return(sc, avp);
1223         }
1224
1225         /* Set interrupt mask */
1226         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1227         ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
1228         sc->sc_flags &= ~SC_OP_BEACONS;
1229
1230         error = ath_vap_detach(sc, 0);
1231         if (error)
1232                 DPRINTF(sc, ATH_DBG_FATAL,
1233                         "%s: Unable to detach vap, error: %d\n",
1234                         __func__, error);
1235 }
1236
1237 static int ath9k_config(struct ieee80211_hw *hw,
1238                         struct ieee80211_conf *conf)
1239 {
1240         struct ath_softc *sc = hw->priv;
1241         struct ieee80211_channel *curchan = hw->conf.channel;
1242         int pos;
1243
1244         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
1245                 __func__,
1246                 curchan->center_freq);
1247
1248         pos = ath_get_channel(sc, curchan);
1249         if (pos == -1) {
1250                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1251                 return -EINVAL;
1252         }
1253
1254         sc->sc_ah->ah_channels[pos].chanmode =
1255                 (curchan->band == IEEE80211_BAND_2GHZ) ?
1256                 CHANNEL_G : CHANNEL_A;
1257
1258         if (sc->sc_curaid && hw->conf.ht_conf.ht_supported)
1259                 sc->sc_ah->ah_channels[pos].chanmode =
1260                         ath_get_extchanmode(sc, curchan);
1261
1262         sc->sc_config.txpowlimit = 2 * conf->power_level;
1263
1264         /* set h/w channel */
1265         if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
1266                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
1267                         __func__);
1268
1269         return 0;
1270 }
1271
1272 static int ath9k_config_interface(struct ieee80211_hw *hw,
1273                                   struct ieee80211_vif *vif,
1274                                   struct ieee80211_if_conf *conf)
1275 {
1276         struct ath_softc *sc = hw->priv;
1277         struct ath_hal *ah = sc->sc_ah;
1278         struct ath_vap *avp;
1279         u32 rfilt = 0;
1280         int error, i;
1281         DECLARE_MAC_BUF(mac);
1282
1283         avp = sc->sc_vaps[0];
1284         if (avp == NULL) {
1285                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1286                         __func__);
1287                 return -EINVAL;
1288         }
1289
1290         /* TODO: Need to decide which hw opmode to use for multi-interface
1291          * cases */
1292         if (vif->type == NL80211_IFTYPE_AP &&
1293             ah->ah_opmode != ATH9K_M_HOSTAP) {
1294                 ah->ah_opmode = ATH9K_M_HOSTAP;
1295                 ath9k_hw_setopmode(ah);
1296                 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
1297                 /* Request full reset to get hw opmode changed properly */
1298                 sc->sc_flags |= SC_OP_FULL_RESET;
1299         }
1300
1301         if ((conf->changed & IEEE80211_IFCC_BSSID) &&
1302             !is_zero_ether_addr(conf->bssid)) {
1303                 switch (vif->type) {
1304                 case NL80211_IFTYPE_STATION:
1305                 case NL80211_IFTYPE_ADHOC:
1306                         /* Update ratectrl about the new state */
1307                         ath_rate_newstate(sc, avp);
1308
1309                         /* Set BSSID */
1310                         memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
1311                         sc->sc_curaid = 0;
1312                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
1313                                                sc->sc_curaid);
1314
1315                         /* Set aggregation protection mode parameters */
1316                         sc->sc_config.ath_aggr_prot = 0;
1317
1318                         /*
1319                          * Reset our TSF so that its value is lower than the
1320                          * beacon that we are trying to catch.
1321                          * Only then hw will update its TSF register with the
1322                          * new beacon. Reset the TSF before setting the BSSID
1323                          * to avoid allowing in any frames that would update
1324                          * our TSF only to have us clear it
1325                          * immediately thereafter.
1326                          */
1327                         ath9k_hw_reset_tsf(sc->sc_ah);
1328
1329                         /* Disable BMISS interrupt when we're not associated */
1330                         ath9k_hw_set_interrupts(sc->sc_ah,
1331                                         sc->sc_imask &
1332                                         ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
1333                         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1334
1335                         DPRINTF(sc, ATH_DBG_CONFIG,
1336                                 "%s: RX filter 0x%x bssid %s aid 0x%x\n",
1337                                 __func__, rfilt,
1338                                 print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
1339
1340                         /* need to reconfigure the beacon */
1341                         sc->sc_flags &= ~SC_OP_BEACONS ;
1342
1343                         break;
1344                 default:
1345                         break;
1346                 }
1347         }
1348
1349         if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1350             ((vif->type == NL80211_IFTYPE_ADHOC) ||
1351              (vif->type == NL80211_IFTYPE_AP))) {
1352                 /*
1353                  * Allocate and setup the beacon frame.
1354                  *
1355                  * Stop any previous beacon DMA.  This may be
1356                  * necessary, for example, when an ibss merge
1357                  * causes reconfiguration; we may be called
1358                  * with beacon transmission active.
1359                  */
1360                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1361
1362                 error = ath_beacon_alloc(sc, 0);
1363                 if (error != 0)
1364                         return error;
1365
1366                 ath_beacon_sync(sc, 0);
1367         }
1368
1369         /* Check for WLAN_CAPABILITY_PRIVACY ? */
1370         if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
1371                 for (i = 0; i < IEEE80211_WEP_NKID; i++)
1372                         if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
1373                                 ath9k_hw_keysetmac(sc->sc_ah,
1374                                                    (u16)i,
1375                                                    sc->sc_curbssid);
1376         }
1377
1378         /* Only legacy IBSS for now */
1379         if (vif->type == NL80211_IFTYPE_ADHOC)
1380                 ath_update_chainmask(sc, 0);
1381
1382         return 0;
1383 }
1384
1385 #define SUPPORTED_FILTERS                       \
1386         (FIF_PROMISC_IN_BSS |                   \
1387         FIF_ALLMULTI |                          \
1388         FIF_CONTROL |                           \
1389         FIF_OTHER_BSS |                         \
1390         FIF_BCN_PRBRESP_PROMISC |               \
1391         FIF_FCSFAIL)
1392
1393 /* FIXME: sc->sc_full_reset ? */
1394 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1395                                    unsigned int changed_flags,
1396                                    unsigned int *total_flags,
1397                                    int mc_count,
1398                                    struct dev_mc_list *mclist)
1399 {
1400         struct ath_softc *sc = hw->priv;
1401         u32 rfilt;
1402
1403         changed_flags &= SUPPORTED_FILTERS;
1404         *total_flags &= SUPPORTED_FILTERS;
1405
1406         sc->rx_filter = *total_flags;
1407         rfilt = ath_calcrxfilter(sc);
1408         ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1409
1410         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1411                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1412                         ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
1413         }
1414
1415         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
1416                 __func__, sc->rx_filter);
1417 }
1418
1419 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1420                              struct ieee80211_vif *vif,
1421                              enum sta_notify_cmd cmd,
1422                              struct ieee80211_sta *sta)
1423 {
1424         struct ath_softc *sc = hw->priv;
1425         struct ath_node *an;
1426         unsigned long flags;
1427         DECLARE_MAC_BUF(mac);
1428
1429         spin_lock_irqsave(&sc->node_lock, flags);
1430         an = ath_node_find(sc, sta->addr);
1431         spin_unlock_irqrestore(&sc->node_lock, flags);
1432
1433         switch (cmd) {
1434         case STA_NOTIFY_ADD:
1435                 spin_lock_irqsave(&sc->node_lock, flags);
1436                 if (!an) {
1437                         ath_node_attach(sc, sta->addr, 0);
1438                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %s\n",
1439                                 __func__, print_mac(mac, sta->addr));
1440                 } else {
1441                         ath_node_get(sc, sta->addr);
1442                 }
1443                 spin_unlock_irqrestore(&sc->node_lock, flags);
1444                 break;
1445         case STA_NOTIFY_REMOVE:
1446                 if (!an)
1447                         DPRINTF(sc, ATH_DBG_FATAL,
1448                                 "%s: Removal of a non-existent node\n",
1449                                 __func__);
1450                 else {
1451                         ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
1452                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %s\n",
1453                                 __func__,
1454                                 print_mac(mac, sta->addr));
1455                 }
1456                 break;
1457         default:
1458                 break;
1459         }
1460 }
1461
1462 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1463                          u16 queue,
1464                          const struct ieee80211_tx_queue_params *params)
1465 {
1466         struct ath_softc *sc = hw->priv;
1467         struct ath9k_tx_queue_info qi;
1468         int ret = 0, qnum;
1469
1470         if (queue >= WME_NUM_AC)
1471                 return 0;
1472
1473         qi.tqi_aifs = params->aifs;
1474         qi.tqi_cwmin = params->cw_min;
1475         qi.tqi_cwmax = params->cw_max;
1476         qi.tqi_burstTime = params->txop;
1477         qnum = ath_get_hal_qnum(queue, sc);
1478
1479         DPRINTF(sc, ATH_DBG_CONFIG,
1480                 "%s: Configure tx [queue/halq] [%d/%d],  "
1481                 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1482                 __func__,
1483                 queue,
1484                 qnum,
1485                 params->aifs,
1486                 params->cw_min,
1487                 params->cw_max,
1488                 params->txop);
1489
1490         ret = ath_txq_update(sc, qnum, &qi);
1491         if (ret)
1492                 DPRINTF(sc, ATH_DBG_FATAL,
1493                         "%s: TXQ Update failed\n", __func__);
1494
1495         return ret;
1496 }
1497
1498 static int ath9k_set_key(struct ieee80211_hw *hw,
1499                          enum set_key_cmd cmd,
1500                          const u8 *local_addr,
1501                          const u8 *addr,
1502                          struct ieee80211_key_conf *key)
1503 {
1504         struct ath_softc *sc = hw->priv;
1505         int ret = 0;
1506
1507         DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1508
1509         switch (cmd) {
1510         case SET_KEY:
1511                 ret = ath_key_config(sc, addr, key);
1512                 if (!ret) {
1513                         set_bit(key->keyidx, sc->sc_keymap);
1514                         key->hw_key_idx = key->keyidx;
1515                         /* push IV and Michael MIC generation to stack */
1516                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1517                         if (key->alg == ALG_TKIP)
1518                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1519                 }
1520                 break;
1521         case DISABLE_KEY:
1522                 ath_key_delete(sc, key);
1523                 clear_bit(key->keyidx, sc->sc_keymap);
1524                 break;
1525         default:
1526                 ret = -EINVAL;
1527         }
1528
1529         return ret;
1530 }
1531
1532 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1533                                    struct ieee80211_vif *vif,
1534                                    struct ieee80211_bss_conf *bss_conf,
1535                                    u32 changed)
1536 {
1537         struct ath_softc *sc = hw->priv;
1538
1539         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1540                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
1541                         __func__,
1542                         bss_conf->use_short_preamble);
1543                 if (bss_conf->use_short_preamble)
1544                         sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1545                 else
1546                         sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1547         }
1548
1549         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1550                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
1551                         __func__,
1552                         bss_conf->use_cts_prot);
1553                 if (bss_conf->use_cts_prot &&
1554                     hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1555                         sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1556                 else
1557                         sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1558         }
1559
1560         if (changed & BSS_CHANGED_HT) {
1561                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n",
1562                         __func__,
1563                         bss_conf->assoc_ht);
1564                 ath9k_ht_conf(sc, bss_conf);
1565         }
1566
1567         if (changed & BSS_CHANGED_ASSOC) {
1568                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
1569                         __func__,
1570                         bss_conf->assoc);
1571                 ath9k_bss_assoc_info(sc, bss_conf);
1572         }
1573 }
1574
1575 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1576 {
1577         u64 tsf;
1578         struct ath_softc *sc = hw->priv;
1579         struct ath_hal *ah = sc->sc_ah;
1580
1581         tsf = ath9k_hw_gettsf64(ah);
1582
1583         return tsf;
1584 }
1585
1586 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1587 {
1588         struct ath_softc *sc = hw->priv;
1589         struct ath_hal *ah = sc->sc_ah;
1590
1591         ath9k_hw_reset_tsf(ah);
1592 }
1593
1594 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1595                        enum ieee80211_ampdu_mlme_action action,
1596                        struct ieee80211_sta *sta,
1597                        u16 tid, u16 *ssn)
1598 {
1599         struct ath_softc *sc = hw->priv;
1600         int ret = 0;
1601
1602         switch (action) {
1603         case IEEE80211_AMPDU_RX_START:
1604                 ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn);
1605                 if (ret < 0)
1606                         DPRINTF(sc, ATH_DBG_FATAL,
1607                                 "%s: Unable to start RX aggregation\n",
1608                                 __func__);
1609                 break;
1610         case IEEE80211_AMPDU_RX_STOP:
1611                 ret = ath_rx_aggr_stop(sc, sta->addr, tid);
1612                 if (ret < 0)
1613                         DPRINTF(sc, ATH_DBG_FATAL,
1614                                 "%s: Unable to stop RX aggregation\n",
1615                                 __func__);
1616                 break;
1617         case IEEE80211_AMPDU_TX_START:
1618                 ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn);
1619                 if (ret < 0)
1620                         DPRINTF(sc, ATH_DBG_FATAL,
1621                                 "%s: Unable to start TX aggregation\n",
1622                                 __func__);
1623                 else
1624                         ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1625                 break;
1626         case IEEE80211_AMPDU_TX_STOP:
1627                 ret = ath_tx_aggr_stop(sc, sta->addr, tid);
1628                 if (ret < 0)
1629                         DPRINTF(sc, ATH_DBG_FATAL,
1630                                 "%s: Unable to stop TX aggregation\n",
1631                                 __func__);
1632
1633                 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1634                 break;
1635         default:
1636                 DPRINTF(sc, ATH_DBG_FATAL,
1637                         "%s: Unknown AMPDU action\n", __func__);
1638         }
1639
1640         return ret;
1641 }
1642
1643 static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value)
1644 {
1645         return -EOPNOTSUPP;
1646 }
1647
1648 static struct ieee80211_ops ath9k_ops = {
1649         .tx                 = ath9k_tx,
1650         .start              = ath9k_start,
1651         .stop               = ath9k_stop,
1652         .add_interface      = ath9k_add_interface,
1653         .remove_interface   = ath9k_remove_interface,
1654         .config             = ath9k_config,
1655         .config_interface   = ath9k_config_interface,
1656         .configure_filter   = ath9k_configure_filter,
1657         .get_stats          = NULL,
1658         .sta_notify         = ath9k_sta_notify,
1659         .conf_tx            = ath9k_conf_tx,
1660         .get_tx_stats       = NULL,
1661         .bss_info_changed   = ath9k_bss_info_changed,
1662         .set_tim            = NULL,
1663         .set_key            = ath9k_set_key,
1664         .hw_scan            = NULL,
1665         .get_tkip_seq       = NULL,
1666         .set_rts_threshold  = NULL,
1667         .set_frag_threshold = NULL,
1668         .set_retry_limit    = NULL,
1669         .get_tsf            = ath9k_get_tsf,
1670         .reset_tsf          = ath9k_reset_tsf,
1671         .tx_last_beacon     = NULL,
1672         .ampdu_action       = ath9k_ampdu_action,
1673         .set_frag_threshold = ath9k_no_fragmentation,
1674 };
1675
1676 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1677 {
1678         void __iomem *mem;
1679         struct ath_softc *sc;
1680         struct ieee80211_hw *hw;
1681         const char *athname;
1682         u8 csz;
1683         u32 val;
1684         int ret = 0;
1685
1686         if (pci_enable_device(pdev))
1687                 return -EIO;
1688
1689         /* XXX 32-bit addressing only */
1690         if (pci_set_dma_mask(pdev, 0xffffffff)) {
1691                 printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
1692                 ret = -ENODEV;
1693                 goto bad;
1694         }
1695
1696         /*
1697          * Cache line size is used to size and align various
1698          * structures used to communicate with the hardware.
1699          */
1700         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
1701         if (csz == 0) {
1702                 /*
1703                  * Linux 2.4.18 (at least) writes the cache line size
1704                  * register as a 16-bit wide register which is wrong.
1705                  * We must have this setup properly for rx buffer
1706                  * DMA to work so force a reasonable value here if it
1707                  * comes up zero.
1708                  */
1709                 csz = L1_CACHE_BYTES / sizeof(u32);
1710                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
1711         }
1712         /*
1713          * The default setting of latency timer yields poor results,
1714          * set it to the value used by other systems. It may be worth
1715          * tweaking this setting more.
1716          */
1717         pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
1718
1719         pci_set_master(pdev);
1720
1721         /*
1722          * Disable the RETRY_TIMEOUT register (0x41) to keep
1723          * PCI Tx retries from interfering with C3 CPU state.
1724          */
1725         pci_read_config_dword(pdev, 0x40, &val);
1726         if ((val & 0x0000ff00) != 0)
1727                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1728
1729         ret = pci_request_region(pdev, 0, "ath9k");
1730         if (ret) {
1731                 dev_err(&pdev->dev, "PCI memory region reserve error\n");
1732                 ret = -ENODEV;
1733                 goto bad;
1734         }
1735
1736         mem = pci_iomap(pdev, 0, 0);
1737         if (!mem) {
1738                 printk(KERN_ERR "PCI memory map error\n") ;
1739                 ret = -EIO;
1740                 goto bad1;
1741         }
1742
1743         hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
1744         if (hw == NULL) {
1745                 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
1746                 goto bad2;
1747         }
1748
1749         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1750                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1751                 IEEE80211_HW_SIGNAL_DBM |
1752                 IEEE80211_HW_NOISE_DBM;
1753
1754         hw->wiphy->interface_modes =
1755                 BIT(NL80211_IFTYPE_AP) |
1756                 BIT(NL80211_IFTYPE_STATION) |
1757                 BIT(NL80211_IFTYPE_ADHOC);
1758
1759         SET_IEEE80211_DEV(hw, &pdev->dev);
1760         pci_set_drvdata(pdev, hw);
1761
1762         sc = hw->priv;
1763         sc->hw = hw;
1764         sc->pdev = pdev;
1765         sc->mem = mem;
1766
1767         if (ath_attach(id->device, sc) != 0) {
1768                 ret = -ENODEV;
1769                 goto bad3;
1770         }
1771
1772         /* setup interrupt service routine */
1773
1774         if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
1775                 printk(KERN_ERR "%s: request_irq failed\n",
1776                         wiphy_name(hw->wiphy));
1777                 ret = -EIO;
1778                 goto bad4;
1779         }
1780
1781         athname = ath9k_hw_probe(id->vendor, id->device);
1782
1783         printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
1784                wiphy_name(hw->wiphy),
1785                athname ? athname : "Atheros ???",
1786                (unsigned long)mem, pdev->irq);
1787
1788         return 0;
1789 bad4:
1790         ath_detach(sc);
1791 bad3:
1792         ieee80211_free_hw(hw);
1793 bad2:
1794         pci_iounmap(pdev, mem);
1795 bad1:
1796         pci_release_region(pdev, 0);
1797 bad:
1798         pci_disable_device(pdev);
1799         return ret;
1800 }
1801
1802 static void ath_pci_remove(struct pci_dev *pdev)
1803 {
1804         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1805         struct ath_softc *sc = hw->priv;
1806         enum ath9k_int status;
1807
1808         if (pdev->irq) {
1809                 ath9k_hw_set_interrupts(sc->sc_ah, 0);
1810                 /* clear the ISR */
1811                 ath9k_hw_getisr(sc->sc_ah, &status);
1812                 sc->sc_flags |= SC_OP_INVALID;
1813                 free_irq(pdev->irq, sc);
1814         }
1815         ath_detach(sc);
1816
1817         pci_iounmap(pdev, sc->mem);
1818         pci_release_region(pdev, 0);
1819         pci_disable_device(pdev);
1820         ieee80211_free_hw(hw);
1821 }
1822
1823 #ifdef CONFIG_PM
1824
1825 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1826 {
1827         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1828         struct ath_softc *sc = hw->priv;
1829
1830         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1831
1832 #ifdef CONFIG_RFKILL
1833         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1834                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1835 #endif
1836
1837         pci_save_state(pdev);
1838         pci_disable_device(pdev);
1839         pci_set_power_state(pdev, 3);
1840
1841         return 0;
1842 }
1843
1844 static int ath_pci_resume(struct pci_dev *pdev)
1845 {
1846         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1847         struct ath_softc *sc = hw->priv;
1848         u32 val;
1849         int err;
1850
1851         err = pci_enable_device(pdev);
1852         if (err)
1853                 return err;
1854         pci_restore_state(pdev);
1855         /*
1856          * Suspend/Resume resets the PCI configuration space, so we have to
1857          * re-disable the RETRY_TIMEOUT register (0x41) to keep
1858          * PCI Tx retries from interfering with C3 CPU state
1859          */
1860         pci_read_config_dword(pdev, 0x40, &val);
1861         if ((val & 0x0000ff00) != 0)
1862                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1863
1864         /* Enable LED */
1865         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1866                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1867         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1868
1869 #ifdef CONFIG_RFKILL
1870         /*
1871          * check the h/w rfkill state on resume
1872          * and start the rfkill poll timer
1873          */
1874         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1875                 queue_delayed_work(sc->hw->workqueue,
1876                                    &sc->rf_kill.rfkill_poll, 0);
1877 #endif
1878
1879         return 0;
1880 }
1881
1882 #endif /* CONFIG_PM */
1883
1884 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
1885
1886 static struct pci_driver ath_pci_driver = {
1887         .name       = "ath9k",
1888         .id_table   = ath_pci_id_table,
1889         .probe      = ath_pci_probe,
1890         .remove     = ath_pci_remove,
1891 #ifdef CONFIG_PM
1892         .suspend    = ath_pci_suspend,
1893         .resume     = ath_pci_resume,
1894 #endif /* CONFIG_PM */
1895 };
1896
1897 static int __init init_ath_pci(void)
1898 {
1899         printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
1900
1901         if (pci_register_driver(&ath_pci_driver) < 0) {
1902                 printk(KERN_ERR
1903                         "ath_pci: No devices found, driver not installed.\n");
1904                 pci_unregister_driver(&ath_pci_driver);
1905                 return -ENODEV;
1906         }
1907
1908         return 0;
1909 }
1910 module_init(init_ath_pci);
1911
1912 static void __exit exit_ath_pci(void)
1913 {
1914         pci_unregister_driver(&ath_pci_driver);
1915         printk(KERN_INFO "%s: driver unloaded\n", dev_info);
1916 }
1917 module_exit(exit_ath_pci);