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         if (mac)
 208                 sc->sc_keytype = hk.kv_type;
 209         return 0;
 210 }
 211
 212 static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
 213 {
 214         int freeslot;
 215
 216         freeslot = (key->keyidx >= 4) ? 1 : 0;
 217         ath_key_reset(sc, key->keyidx, freeslot);
 218 }
 219
 220 static void setup_ht_cap(struct ieee80211_ht_info *ht_info)
 221 {
 222 #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3       /* 2 ^ 16 */
 223 #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6          /* 8 usec */
 224
 225         ht_info->ht_supported = 1;
 226         ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
 227                         |(u16)IEEE80211_HT_CAP_SM_PS
 228                         |(u16)IEEE80211_HT_CAP_SGI_40
 229                         |(u16)IEEE80211_HT_CAP_DSSSCCK40;
 230
 231         ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
 232         ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
 233         /* setup supported mcs set */
 234         memset(ht_info->supp_mcs_set, 0, 16);
 235         ht_info->supp_mcs_set[0] = 0xff;
 236         ht_info->supp_mcs_set[1] = 0xff;
 237         ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
 238 }
 239
 240 static int ath_rate2idx(struct ath_softc *sc, int rate)
 241 {
 242         int i = 0, cur_band, n_rates;
 243         struct ieee80211_hw *hw = sc->hw;
 244
 245         cur_band = hw->conf.channel->band;
 246         n_rates = sc->sbands[cur_band].n_bitrates;
 247
 248         for (i = 0; i < n_rates; i++) {
 249                 if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
 250                         break;
 251         }
 252
 253         /*
 254          * NB:mac80211 validates rx rate index against the supported legacy rate
 255          * index only (should be done against ht rates also), return the highest
 256          * legacy rate index for rx rate which does not match any one of the
 257          * supported basic and extended rates to make mac80211 happy.
 258          * The following hack will be cleaned up once the issue with
 259          * the rx rate index validation in mac80211 is fixed.
 260          */
 261         if (i == n_rates)
 262                 return n_rates - 1;
 263         return i;
 264 }
 265
 266 static void ath9k_rx_prepare(struct ath_softc *sc,
 267                              struct sk_buff *skb,
 268                              struct ath_recv_status *status,
 269                              struct ieee80211_rx_status *rx_status)
 270 {
 271         struct ieee80211_hw *hw = sc->hw;
 272         struct ieee80211_channel *curchan = hw->conf.channel;
 273
 274         memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
 275
 276         rx_status->mactime = status->tsf;
 277         rx_status->band = curchan->band;
 278         rx_status->freq =  curchan->center_freq;
 279         rx_status->noise = ATH_DEFAULT_NOISE_FLOOR;
 280         rx_status->signal = rx_status->noise + status->rssi;
 281         rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
 282         rx_status->antenna = status->antenna;
 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         } else {
 433                 DPRINTF(sc, ATH_DBG_CONFIG,
 434                 "%s: Bss Info DISSOC\n", __func__);
 435                 sc->sc_curaid = 0;
 436         }
 437 }
 438
 439 void ath_get_beaconconfig(struct ath_softc *sc,
 440                           int if_id,
 441                           struct ath_beacon_config *conf)
 442 {
 443         struct ieee80211_hw *hw = sc->hw;
 444
 445         /* fill in beacon config data */
 446
 447         conf->beacon_interval = hw->conf.beacon_int;
 448         conf->listen_interval = 100;
 449         conf->dtim_count = 1;
 450         conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
 451 }
 452
 453 void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
 454                      struct ath_xmit_status *tx_status, struct ath_node *an)
 455 {
 456         struct ieee80211_hw *hw = sc->hw;
 457         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 458
 459         DPRINTF(sc, ATH_DBG_XMIT,
 460                 "%s: TX complete: skb: %p\n", __func__, skb);
 461
 462         if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
 463                 tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
 464                 /* free driver's private data area of tx_info */
 465                 if (tx_info->driver_data[0] != NULL)
 466                         kfree(tx_info->driver_data[0]);
 467                         tx_info->driver_data[0] = NULL;
 468         }
 469
 470         if (tx_status->flags & ATH_TX_BAR) {
 471                 tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
 472                 tx_status->flags &= ~ATH_TX_BAR;
 473         }
 474
 475         if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) {
 476                 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 477                         /* Frame was not ACKed, but an ACK was expected */
 478                         tx_info->status.excessive_retries = 1;
 479                 }
 480         } else {
 481                 /* Frame was ACKed */
 482                 tx_info->flags |= IEEE80211_TX_STAT_ACK;
 483         }
 484
 485         tx_info->status.retry_count = tx_status->retries;
 486
 487         ieee80211_tx_status(hw, skb);
 488         if (an)
 489                 ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
 490 }
 491
 492 int _ath_rx_indicate(struct ath_softc *sc,
 493                      struct sk_buff *skb,
 494                      struct ath_recv_status *status,
 495                      u16 keyix)
 496 {
 497         struct ieee80211_hw *hw = sc->hw;
 498         struct ath_node *an = NULL;
 499         struct ieee80211_rx_status rx_status;
 500         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 501         int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 502         int padsize;
 503         enum ATH_RX_TYPE st;
 504
 505         /* see if any padding is done by the hw and remove it */
 506         if (hdrlen & 3) {
 507                 padsize = hdrlen % 4;
 508                 memmove(skb->data + padsize, skb->data, hdrlen);
 509                 skb_pull(skb, padsize);
 510         }
 511
 512         /* Prepare rx status */
 513         ath9k_rx_prepare(sc, skb, status, &rx_status);
 514
 515         if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
 516             !(status->flags & ATH_RX_DECRYPT_ERROR)) {
 517                 rx_status.flag |= RX_FLAG_DECRYPTED;
 518         } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
 519                    && !(status->flags & ATH_RX_DECRYPT_ERROR)
 520                    && skb->len >= hdrlen + 4) {
 521                 keyix = skb->data[hdrlen + 3] >> 6;
 522
 523                 if (test_bit(keyix, sc->sc_keymap))
 524                         rx_status.flag |= RX_FLAG_DECRYPTED;
 525         }
 526
 527         spin_lock_bh(&sc->node_lock);
 528         an = ath_node_find(sc, hdr->addr2);
 529         spin_unlock_bh(&sc->node_lock);
 530
 531         if (an) {
 532                 ath_rx_input(sc, an,
 533                              hw->conf.ht_conf.ht_supported,
 534                              skb, status, &st);
 535         }
 536         if (!an || (st != ATH_RX_CONSUMED))
 537                 __ieee80211_rx(hw, skb, &rx_status);
 538
 539         return 0;
 540 }
 541
 542 int ath_rx_subframe(struct ath_node *an,
 543                     struct sk_buff *skb,
 544                     struct ath_recv_status *status)
 545 {
 546         struct ath_softc *sc = an->an_sc;
 547         struct ieee80211_hw *hw = sc->hw;
 548         struct ieee80211_rx_status rx_status;
 549
 550         /* Prepare rx status */
 551         ath9k_rx_prepare(sc, skb, status, &rx_status);
 552         if (!(status->flags & ATH_RX_DECRYPT_ERROR))
 553                 rx_status.flag |= RX_FLAG_DECRYPTED;
 554
 555         __ieee80211_rx(hw, skb, &rx_status);
 556
 557         return 0;
 558 }
 559
 560 /********************************/
 561 /*       LED functions          */
 562 /********************************/
 563
 564 static void ath_led_brightness(struct led_classdev *led_cdev,
 565                                enum led_brightness brightness)
 566 {
 567         struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
 568         struct ath_softc *sc = led->sc;
 569
 570         switch (brightness) {
 571         case LED_OFF:
 572                 if (led->led_type == ATH_LED_ASSOC ||
 573                     led->led_type == ATH_LED_RADIO)
 574                         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 575                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
 576                                 (led->led_type == ATH_LED_RADIO) ? 1 :
 577                                 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
 578                 break;
 579         case LED_FULL:
 580                 if (led->led_type == ATH_LED_ASSOC)
 581                         sc->sc_flags |= SC_OP_LED_ASSOCIATED;
 582                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
 583                 break;
 584         default:
 585                 break;
 586         }
 587 }
 588
 589 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
 590                             char *trigger)
 591 {
 592         int ret;
 593
 594         led->sc = sc;
 595         led->led_cdev.name = led->name;
 596         led->led_cdev.default_trigger = trigger;
 597         led->led_cdev.brightness_set = ath_led_brightness;
 598
 599         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
 600         if (ret)
 601                 DPRINTF(sc, ATH_DBG_FATAL,
 602                         "Failed to register led:%s", led->name);
 603         else
 604                 led->registered = 1;
 605         return ret;
 606 }
 607
 608 static void ath_unregister_led(struct ath_led *led)
 609 {
 610         if (led->registered) {
 611                 led_classdev_unregister(&led->led_cdev);
 612                 led->registered = 0;
 613         }
 614 }
 615
 616 static void ath_deinit_leds(struct ath_softc *sc)
 617 {
 618         ath_unregister_led(&sc->assoc_led);
 619         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 620         ath_unregister_led(&sc->tx_led);
 621         ath_unregister_led(&sc->rx_led);
 622         ath_unregister_led(&sc->radio_led);
 623         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 624 }
 625
 626 static void ath_init_leds(struct ath_softc *sc)
 627 {
 628         char *trigger;
 629         int ret;
 630
 631         /* Configure gpio 1 for output */
 632         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
 633                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 634         /* LED off, active low */
 635         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 636
 637         trigger = ieee80211_get_radio_led_name(sc->hw);
 638         snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
 639                 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
 640         ret = ath_register_led(sc, &sc->radio_led, trigger);
 641         sc->radio_led.led_type = ATH_LED_RADIO;
 642         if (ret)
 643                 goto fail;
 644
 645         trigger = ieee80211_get_assoc_led_name(sc->hw);
 646         snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
 647                 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
 648         ret = ath_register_led(sc, &sc->assoc_led, trigger);
 649         sc->assoc_led.led_type = ATH_LED_ASSOC;
 650         if (ret)
 651                 goto fail;
 652
 653         trigger = ieee80211_get_tx_led_name(sc->hw);
 654         snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
 655                 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
 656         ret = ath_register_led(sc, &sc->tx_led, trigger);
 657         sc->tx_led.led_type = ATH_LED_TX;
 658         if (ret)
 659                 goto fail;
 660
 661         trigger = ieee80211_get_rx_led_name(sc->hw);
 662         snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
 663                 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
 664         ret = ath_register_led(sc, &sc->rx_led, trigger);
 665         sc->rx_led.led_type = ATH_LED_RX;
 666         if (ret)
 667                 goto fail;
 668
 669         return;
 670
 671 fail:
 672         ath_deinit_leds(sc);
 673 }
 674
 675 #ifdef CONFIG_RFKILL
 676 /*******************/
 677 /*      Rfkill     */
 678 /*******************/
 679
 680 static void ath_radio_enable(struct ath_softc *sc)
 681 {
 682         struct ath_hal *ah = sc->sc_ah;
 683         int status;
 684
 685         spin_lock_bh(&sc->sc_resetlock);
 686         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 687                             sc->sc_ht_info.tx_chan_width,
 688                             sc->sc_tx_chainmask,
 689                             sc->sc_rx_chainmask,
 690                             sc->sc_ht_extprotspacing,
 691                             false, &status)) {
 692                 DPRINTF(sc, ATH_DBG_FATAL,
 693                         "%s: unable to reset channel %u (%uMhz) "
 694                         "flags 0x%x hal status %u\n", __func__,
 695                         ath9k_hw_mhz2ieee(ah,
 696                                           ah->ah_curchan->channel,
 697                                           ah->ah_curchan->channelFlags),
 698                         ah->ah_curchan->channel,
 699                         ah->ah_curchan->channelFlags, status);
 700         }
 701         spin_unlock_bh(&sc->sc_resetlock);
 702
 703         ath_update_txpow(sc);
 704         if (ath_startrecv(sc) != 0) {
 705                 DPRINTF(sc, ATH_DBG_FATAL,
 706                         "%s: unable to restart recv logic\n", __func__);
 707                 return;
 708         }
 709
 710         if (sc->sc_flags & SC_OP_BEACONS)
 711                 ath_beacon_config(sc, ATH_IF_ID_ANY);   /* restart beacons */
 712
 713         /* Re-Enable  interrupts */
 714         ath9k_hw_set_interrupts(ah, sc->sc_imask);
 715
 716         /* Enable LED */
 717         ath9k_hw_cfg_output(ah, ATH_LED_PIN,
 718                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 719         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
 720
 721         ieee80211_wake_queues(sc->hw);
 722 }
 723
 724 static void ath_radio_disable(struct ath_softc *sc)
 725 {
 726         struct ath_hal *ah = sc->sc_ah;
 727         int status;
 728
 729
 730         ieee80211_stop_queues(sc->hw);
 731
 732         /* Disable LED */
 733         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
 734         ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
 735
 736         /* Disable interrupts */
 737         ath9k_hw_set_interrupts(ah, 0);
 738
 739         ath_draintxq(sc, false);        /* clear pending tx frames */
 740         ath_stoprecv(sc);               /* turn off frame recv */
 741         ath_flushrecv(sc);              /* flush recv queue */
 742
 743         spin_lock_bh(&sc->sc_resetlock);
 744         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 745                             sc->sc_ht_info.tx_chan_width,
 746                             sc->sc_tx_chainmask,
 747                             sc->sc_rx_chainmask,
 748                             sc->sc_ht_extprotspacing,
 749                             false, &status)) {
 750                 DPRINTF(sc, ATH_DBG_FATAL,
 751                         "%s: unable to reset channel %u (%uMhz) "
 752                         "flags 0x%x hal status %u\n", __func__,
 753                         ath9k_hw_mhz2ieee(ah,
 754                                 ah->ah_curchan->channel,
 755                                 ah->ah_curchan->channelFlags),
 756                         ah->ah_curchan->channel,
 757                         ah->ah_curchan->channelFlags, status);
 758         }
 759         spin_unlock_bh(&sc->sc_resetlock);
 760
 761         ath9k_hw_phy_disable(ah);
 762         ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 763 }
 764
 765 static bool ath_is_rfkill_set(struct ath_softc *sc)
 766 {
 767         struct ath_hal *ah = sc->sc_ah;
 768
 769         return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
 770                                   ah->ah_rfkill_polarity;
 771 }
 772
 773 /* h/w rfkill poll function */
 774 static void ath_rfkill_poll(struct work_struct *work)
 775 {
 776         struct ath_softc *sc = container_of(work, struct ath_softc,
 777                                             rf_kill.rfkill_poll.work);
 778         bool radio_on;
 779
 780         if (sc->sc_flags & SC_OP_INVALID)
 781                 return;
 782
 783         radio_on = !ath_is_rfkill_set(sc);
 784
 785         /*
 786          * enable/disable radio only when there is a
 787          * state change in RF switch
 788          */
 789         if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
 790                 enum rfkill_state state;
 791
 792                 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
 793                         state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
 794                                 : RFKILL_STATE_HARD_BLOCKED;
 795                 } else if (radio_on) {
 796                         ath_radio_enable(sc);
 797                         state = RFKILL_STATE_UNBLOCKED;
 798                 } else {
 799                         ath_radio_disable(sc);
 800                         state = RFKILL_STATE_HARD_BLOCKED;
 801                 }
 802
 803                 if (state == RFKILL_STATE_HARD_BLOCKED)
 804                         sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
 805                 else
 806                         sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
 807
 808                 rfkill_force_state(sc->rf_kill.rfkill, state);
 809         }
 810
 811         queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
 812                            msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
 813 }
 814
 815 /* s/w rfkill handler */
 816 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
 817 {
 818         struct ath_softc *sc = data;
 819
 820         switch (state) {
 821         case RFKILL_STATE_SOFT_BLOCKED:
 822                 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
 823                     SC_OP_RFKILL_SW_BLOCKED)))
 824                         ath_radio_disable(sc);
 825                 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
 826                 return 0;
 827         case RFKILL_STATE_UNBLOCKED:
 828                 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
 829                         sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
 830                         if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
 831                                 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
 832                                         "radio as it is disabled by h/w \n");
 833                                 return -EPERM;
 834                         }
 835                         ath_radio_enable(sc);
 836                 }
 837                 return 0;
 838         default:
 839                 return -EINVAL;
 840         }
 841 }
 842
 843 /* Init s/w rfkill */
 844 static int ath_init_sw_rfkill(struct ath_softc *sc)
 845 {
 846         sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
 847                                              RFKILL_TYPE_WLAN);
 848         if (!sc->rf_kill.rfkill) {
 849                 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
 850                 return -ENOMEM;
 851         }
 852
 853         snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
 854                 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
 855         sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
 856         sc->rf_kill.rfkill->data = sc;
 857         sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
 858         sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
 859         sc->rf_kill.rfkill->user_claim_unsupported = 1;
 860
 861         return 0;
 862 }
 863
 864 /* Deinitialize rfkill */
 865 static void ath_deinit_rfkill(struct ath_softc *sc)
 866 {
 867         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 868                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
 869
 870         if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
 871                 rfkill_unregister(sc->rf_kill.rfkill);
 872                 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
 873                 sc->rf_kill.rfkill = NULL;
 874         }
 875 }
 876 #endif /* CONFIG_RFKILL */
 877
 878 static int ath_detach(struct ath_softc *sc)
 879 {
 880         struct ieee80211_hw *hw = sc->hw;
 881
 882         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 883
 884         /* Deinit LED control */
 885         ath_deinit_leds(sc);
 886
 887 #ifdef CONFIG_RFKILL
 888         /* deinit rfkill */
 889         ath_deinit_rfkill(sc);
 890 #endif
 891
 892         /* Unregister hw */
 893
 894         ieee80211_unregister_hw(hw);
 895
 896         /* unregister Rate control */
 897         ath_rate_control_unregister();
 898
 899         /* tx/rx cleanup */
 900
 901         ath_rx_cleanup(sc);
 902         ath_tx_cleanup(sc);
 903
 904         /* Deinit */
 905
 906         ath_deinit(sc);
 907
 908         return 0;
 909 }
 910
 911 static int ath_attach(u16 devid,
 912                       struct ath_softc *sc)
 913 {
 914         struct ieee80211_hw *hw = sc->hw;
 915         int error = 0;
 916
 917         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
 918
 919         error = ath_init(devid, sc);
 920         if (error != 0)
 921                 return error;
 922
 923         /* Init nodes */
 924
 925         INIT_LIST_HEAD(&sc->node_list);
 926         spin_lock_init(&sc->node_lock);
 927
 928         /* get mac address from hardware and set in mac80211 */
 929
 930         SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
 931
 932         /* setup channels and rates */
 933
 934         sc->sbands[IEEE80211_BAND_2GHZ].channels =
 935                 sc->channels[IEEE80211_BAND_2GHZ];
 936         sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
 937                 sc->rates[IEEE80211_BAND_2GHZ];
 938         sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 939
 940         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 941                 /* Setup HT capabilities for 2.4Ghz*/
 942                 setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info);
 943
 944         hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 945                 &sc->sbands[IEEE80211_BAND_2GHZ];
 946
 947         if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
 948                 sc->sbands[IEEE80211_BAND_5GHZ].channels =
 949                         sc->channels[IEEE80211_BAND_5GHZ];
 950                 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
 951                         sc->rates[IEEE80211_BAND_5GHZ];
 952                 sc->sbands[IEEE80211_BAND_5GHZ].band =
 953                         IEEE80211_BAND_5GHZ;
 954
 955                 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
 956                         /* Setup HT capabilities for 5Ghz*/
 957                         setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info);
 958
 959                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 960                         &sc->sbands[IEEE80211_BAND_5GHZ];
 961         }
 962
 963         /* FIXME: Have to figure out proper hw init values later */
 964
 965         hw->queues = 4;
 966         hw->ampdu_queues = 1;
 967
 968         /* Register rate control */
 969         hw->rate_control_algorithm = "ath9k_rate_control";
 970         error = ath_rate_control_register();
 971         if (error != 0) {
 972                 DPRINTF(sc, ATH_DBG_FATAL,
 973                         "%s: Unable to register rate control "
 974                         "algorithm:%d\n", __func__, error);
 975                 ath_rate_control_unregister();
 976                 goto bad;
 977         }
 978
 979         error = ieee80211_register_hw(hw);
 980         if (error != 0) {
 981                 ath_rate_control_unregister();
 982                 goto bad;
 983         }
 984
 985         /* Initialize LED control */
 986         ath_init_leds(sc);
 987
 988 #ifdef CONFIG_RFKILL
 989         /* Initialze h/w Rfkill */
 990         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 991                 INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
 992
 993         /* Initialize s/w rfkill */
 994         if (ath_init_sw_rfkill(sc))
 995                 goto detach;
 996 #endif
 997
 998         /* initialize tx/rx engine */
 999
1000         error = ath_tx_init(sc, ATH_TXBUF);
1001         if (error != 0)
1002                 goto detach;
1003
1004         error = ath_rx_init(sc, ATH_RXBUF);
1005         if (error != 0)
1006                 goto detach;
1007
1008         return 0;
1009 detach:
1010         ath_detach(sc);
1011 bad:
1012         return error;
1013 }
1014
1015 static int ath9k_start(struct ieee80211_hw *hw)
1016 {
1017         struct ath_softc *sc = hw->priv;
1018         struct ieee80211_channel *curchan = hw->conf.channel;
1019         int error = 0, pos;
1020
1021         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
1022                 "initial channel: %d MHz\n", __func__, curchan->center_freq);
1023
1024         /* setup initial channel */
1025
1026         pos = ath_get_channel(sc, curchan);
1027         if (pos == -1) {
1028                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1029                 return -EINVAL;
1030         }
1031
1032         sc->sc_ah->ah_channels[pos].chanmode =
1033                 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
1034
1035         /* open ath_dev */
1036         error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
1037         if (error) {
1038                 DPRINTF(sc, ATH_DBG_FATAL,
1039                         "%s: Unable to complete ath_open\n", __func__);
1040                 return error;
1041         }
1042
1043 #ifdef CONFIG_RFKILL
1044         /* Start rfkill polling */
1045         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1046                 queue_delayed_work(sc->hw->workqueue,
1047                                    &sc->rf_kill.rfkill_poll, 0);
1048
1049         if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
1050                 if (rfkill_register(sc->rf_kill.rfkill)) {
1051                         DPRINTF(sc, ATH_DBG_FATAL,
1052                                         "Unable to register rfkill\n");
1053                         rfkill_free(sc->rf_kill.rfkill);
1054
1055                         /* Deinitialize the device */
1056                         if (sc->pdev->irq)
1057                                 free_irq(sc->pdev->irq, sc);
1058                         ath_detach(sc);
1059                         pci_iounmap(sc->pdev, sc->mem);
1060                         pci_release_region(sc->pdev, 0);
1061                         pci_disable_device(sc->pdev);
1062                         ieee80211_free_hw(hw);
1063                         return -EIO;
1064                 } else {
1065                         sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
1066                 }
1067         }
1068 #endif
1069
1070         ieee80211_wake_queues(hw);
1071         return 0;
1072 }
1073
1074 static int ath9k_tx(struct ieee80211_hw *hw,
1075                     struct sk_buff *skb)
1076 {
1077         struct ath_softc *sc = hw->priv;
1078         int hdrlen, padsize;
1079         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1080
1081         /*
1082          * As a temporary workaround, assign seq# here; this will likely need
1083          * to be cleaned up to work better with Beacon transmission and virtual
1084          * BSSes.
1085          */
1086         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1087                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1088                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1089                         sc->seq_no += 0x10;
1090                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1091                 hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
1092         }
1093
1094         /* Add the padding after the header if this is not already done */
1095         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1096         if (hdrlen & 3) {
1097                 padsize = hdrlen % 4;
1098                 if (skb_headroom(skb) < padsize)
1099                         return -1;
1100                 skb_push(skb, padsize);
1101                 memmove(skb->data, skb->data + padsize, hdrlen);
1102         }
1103
1104         DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
1105                 __func__,
1106                 skb);
1107
1108         if (ath_tx_start(sc, skb) != 0) {
1109                 DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
1110                 dev_kfree_skb_any(skb);
1111                 /* FIXME: Check for proper return value from ATH_DEV */
1112                 return 0;
1113         }
1114
1115         return 0;
1116 }
1117
1118 static void ath9k_stop(struct ieee80211_hw *hw)
1119 {
1120         struct ath_softc *sc = hw->priv;
1121         int error;
1122
1123         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
1124
1125         error = ath_suspend(sc);
1126         if (error)
1127                 DPRINTF(sc, ATH_DBG_CONFIG,
1128                         "%s: Device is no longer present\n", __func__);
1129
1130         ieee80211_stop_queues(hw);
1131
1132 #ifdef CONFIG_RFKILL
1133         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1134                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1135 #endif
1136 }
1137
1138 static int ath9k_add_interface(struct ieee80211_hw *hw,
1139                                struct ieee80211_if_init_conf *conf)
1140 {
1141         struct ath_softc *sc = hw->priv;
1142         int error, ic_opmode = 0;
1143
1144         /* Support only vap for now */
1145
1146         if (sc->sc_nvaps)
1147                 return -ENOBUFS;
1148
1149         switch (conf->type) {
1150         case NL80211_IFTYPE_STATION:
1151                 ic_opmode = ATH9K_M_STA;
1152                 break;
1153         case NL80211_IFTYPE_ADHOC:
1154                 ic_opmode = ATH9K_M_IBSS;
1155                 break;
1156         case NL80211_IFTYPE_AP:
1157                 ic_opmode = ATH9K_M_HOSTAP;
1158                 break;
1159         default:
1160                 DPRINTF(sc, ATH_DBG_FATAL,
1161                         "%s: Interface type %d not yet supported\n",
1162                         __func__, conf->type);
1163                 return -EOPNOTSUPP;
1164         }
1165
1166         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
1167                 __func__,
1168                 ic_opmode);
1169
1170         error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
1171         if (error) {
1172                 DPRINTF(sc, ATH_DBG_FATAL,
1173                         "%s: Unable to attach vap, error: %d\n",
1174                         __func__, error);
1175                 return error;
1176         }
1177
1178         return 0;
1179 }
1180
1181 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1182                                    struct ieee80211_if_init_conf *conf)
1183 {
1184         struct ath_softc *sc = hw->priv;
1185         struct ath_vap *avp;
1186         int error;
1187
1188         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
1189
1190         avp = sc->sc_vaps[0];
1191         if (avp == NULL) {
1192                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1193                         __func__);
1194                 return;
1195         }
1196
1197 #ifdef CONFIG_SLOW_ANT_DIV
1198         ath_slow_ant_div_stop(&sc->sc_antdiv);
1199 #endif
1200
1201         /* Update ratectrl */
1202         ath_rate_newstate(sc, avp);
1203
1204         /* Reclaim beacon resources */
1205         if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
1206             sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
1207                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1208                 ath_beacon_return(sc, avp);
1209         }
1210
1211         /* Set interrupt mask */
1212         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1213         ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
1214         sc->sc_flags &= ~SC_OP_BEACONS;
1215
1216         error = ath_vap_detach(sc, 0);
1217         if (error)
1218                 DPRINTF(sc, ATH_DBG_FATAL,
1219                         "%s: Unable to detach vap, error: %d\n",
1220                         __func__, error);
1221 }
1222
1223 static int ath9k_config(struct ieee80211_hw *hw,
1224                         struct ieee80211_conf *conf)
1225 {
1226         struct ath_softc *sc = hw->priv;
1227         struct ieee80211_channel *curchan = hw->conf.channel;
1228         int pos;
1229
1230         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
1231                 __func__,
1232                 curchan->center_freq);
1233
1234         pos = ath_get_channel(sc, curchan);
1235         if (pos == -1) {
1236                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1237                 return -EINVAL;
1238         }
1239
1240         sc->sc_ah->ah_channels[pos].chanmode =
1241                 (curchan->band == IEEE80211_BAND_2GHZ) ?
1242                 CHANNEL_G : CHANNEL_A;
1243
1244         if (sc->sc_curaid && hw->conf.ht_conf.ht_supported)
1245                 sc->sc_ah->ah_channels[pos].chanmode =
1246                         ath_get_extchanmode(sc, curchan);
1247
1248         sc->sc_config.txpowlimit = 2 * conf->power_level;
1249
1250         /* set h/w channel */
1251         if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
1252                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
1253                         __func__);
1254
1255         return 0;
1256 }
1257
1258 static int ath9k_config_interface(struct ieee80211_hw *hw,
1259                                   struct ieee80211_vif *vif,
1260                                   struct ieee80211_if_conf *conf)
1261 {
1262         struct ath_softc *sc = hw->priv;
1263         struct ath_hal *ah = sc->sc_ah;
1264         struct ath_vap *avp;
1265         u32 rfilt = 0;
1266         int error, i;
1267         DECLARE_MAC_BUF(mac);
1268
1269         avp = sc->sc_vaps[0];
1270         if (avp == NULL) {
1271                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
1272                         __func__);
1273                 return -EINVAL;
1274         }
1275
1276         /* TODO: Need to decide which hw opmode to use for multi-interface
1277          * cases */
1278         if (vif->type == NL80211_IFTYPE_AP &&
1279             ah->ah_opmode != ATH9K_M_HOSTAP) {
1280                 ah->ah_opmode = ATH9K_M_HOSTAP;
1281                 ath9k_hw_setopmode(ah);
1282                 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
1283                 /* Request full reset to get hw opmode changed properly */
1284                 sc->sc_flags |= SC_OP_FULL_RESET;
1285         }
1286
1287         if ((conf->changed & IEEE80211_IFCC_BSSID) &&
1288             !is_zero_ether_addr(conf->bssid)) {
1289                 switch (vif->type) {
1290                 case NL80211_IFTYPE_STATION:
1291                 case NL80211_IFTYPE_ADHOC:
1292                         /* Update ratectrl about the new state */
1293                         ath_rate_newstate(sc, avp);
1294
1295                         /* Set BSSID */
1296                         memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
1297                         sc->sc_curaid = 0;
1298                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
1299                                                sc->sc_curaid);
1300
1301                         /* Set aggregation protection mode parameters */
1302                         sc->sc_config.ath_aggr_prot = 0;
1303
1304                         /*
1305                          * Reset our TSF so that its value is lower than the
1306                          * beacon that we are trying to catch.
1307                          * Only then hw will update its TSF register with the
1308                          * new beacon. Reset the TSF before setting the BSSID
1309                          * to avoid allowing in any frames that would update
1310                          * our TSF only to have us clear it
1311                          * immediately thereafter.
1312                          */
1313                         ath9k_hw_reset_tsf(sc->sc_ah);
1314
1315                         /* Disable BMISS interrupt when we're not associated */
1316                         ath9k_hw_set_interrupts(sc->sc_ah,
1317                                         sc->sc_imask &
1318                                         ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
1319                         sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1320
1321                         DPRINTF(sc, ATH_DBG_CONFIG,
1322                                 "%s: RX filter 0x%x bssid %s aid 0x%x\n",
1323                                 __func__, rfilt,
1324                                 print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
1325
1326                         /* need to reconfigure the beacon */
1327                         sc->sc_flags &= ~SC_OP_BEACONS ;
1328
1329                         break;
1330                 default:
1331                         break;
1332                 }
1333         }
1334
1335         if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1336             ((vif->type == NL80211_IFTYPE_ADHOC) ||
1337              (vif->type == NL80211_IFTYPE_AP))) {
1338                 /*
1339                  * Allocate and setup the beacon frame.
1340                  *
1341                  * Stop any previous beacon DMA.  This may be
1342                  * necessary, for example, when an ibss merge
1343                  * causes reconfiguration; we may be called
1344                  * with beacon transmission active.
1345                  */
1346                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1347
1348                 error = ath_beacon_alloc(sc, 0);
1349                 if (error != 0)
1350                         return error;
1351
1352                 ath_beacon_sync(sc, 0);
1353         }
1354
1355         /* Check for WLAN_CAPABILITY_PRIVACY ? */
1356         if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
1357                 for (i = 0; i < IEEE80211_WEP_NKID; i++)
1358                         if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
1359                                 ath9k_hw_keysetmac(sc->sc_ah,
1360                                                    (u16)i,
1361                                                    sc->sc_curbssid);
1362         }
1363
1364         /* Only legacy IBSS for now */
1365         if (vif->type == NL80211_IFTYPE_ADHOC)
1366                 ath_update_chainmask(sc, 0);
1367
1368         return 0;
1369 }
1370
1371 #define SUPPORTED_FILTERS                       \
1372         (FIF_PROMISC_IN_BSS |                   \
1373         FIF_ALLMULTI |                          \
1374         FIF_CONTROL |                           \
1375         FIF_OTHER_BSS |                         \
1376         FIF_BCN_PRBRESP_PROMISC |               \
1377         FIF_FCSFAIL)
1378
1379 /* FIXME: sc->sc_full_reset ? */
1380 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1381                                    unsigned int changed_flags,
1382                                    unsigned int *total_flags,
1383                                    int mc_count,
1384                                    struct dev_mc_list *mclist)
1385 {
1386         struct ath_softc *sc = hw->priv;
1387         u32 rfilt;
1388
1389         changed_flags &= SUPPORTED_FILTERS;
1390         *total_flags &= SUPPORTED_FILTERS;
1391
1392         sc->rx_filter = *total_flags;
1393         rfilt = ath_calcrxfilter(sc);
1394         ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1395
1396         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1397                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1398                         ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
1399         }
1400
1401         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
1402                 __func__, sc->rx_filter);
1403 }
1404
1405 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1406                              struct ieee80211_vif *vif,
1407                              enum sta_notify_cmd cmd,
1408                              struct ieee80211_sta *sta)
1409 {
1410         struct ath_softc *sc = hw->priv;
1411         struct ath_node *an;
1412         unsigned long flags;
1413         DECLARE_MAC_BUF(mac);
1414
1415         spin_lock_irqsave(&sc->node_lock, flags);
1416         an = ath_node_find(sc, sta->addr);
1417         spin_unlock_irqrestore(&sc->node_lock, flags);
1418
1419         switch (cmd) {
1420         case STA_NOTIFY_ADD:
1421                 spin_lock_irqsave(&sc->node_lock, flags);
1422                 if (!an) {
1423                         ath_node_attach(sc, sta->addr, 0);
1424                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %s\n",
1425                                 __func__, print_mac(mac, sta->addr));
1426                 } else {
1427                         ath_node_get(sc, sta->addr);
1428                 }
1429                 spin_unlock_irqrestore(&sc->node_lock, flags);
1430                 break;
1431         case STA_NOTIFY_REMOVE:
1432                 if (!an)
1433                         DPRINTF(sc, ATH_DBG_FATAL,
1434                                 "%s: Removal of a non-existent node\n",
1435                                 __func__);
1436                 else {
1437                         ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
1438                         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %s\n",
1439                                 __func__,
1440                                 print_mac(mac, sta->addr));
1441                 }
1442                 break;
1443         default:
1444                 break;
1445         }
1446 }
1447
1448 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1449                          u16 queue,
1450                          const struct ieee80211_tx_queue_params *params)
1451 {
1452         struct ath_softc *sc = hw->priv;
1453         struct ath9k_tx_queue_info qi;
1454         int ret = 0, qnum;
1455
1456         if (queue >= WME_NUM_AC)
1457                 return 0;
1458
1459         qi.tqi_aifs = params->aifs;
1460         qi.tqi_cwmin = params->cw_min;
1461         qi.tqi_cwmax = params->cw_max;
1462         qi.tqi_burstTime = params->txop;
1463         qnum = ath_get_hal_qnum(queue, sc);
1464
1465         DPRINTF(sc, ATH_DBG_CONFIG,
1466                 "%s: Configure tx [queue/halq] [%d/%d],  "
1467                 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1468                 __func__,
1469                 queue,
1470                 qnum,
1471                 params->aifs,
1472                 params->cw_min,
1473                 params->cw_max,
1474                 params->txop);
1475
1476         ret = ath_txq_update(sc, qnum, &qi);
1477         if (ret)
1478                 DPRINTF(sc, ATH_DBG_FATAL,
1479                         "%s: TXQ Update failed\n", __func__);
1480
1481         return ret;
1482 }
1483
1484 static int ath9k_set_key(struct ieee80211_hw *hw,
1485                          enum set_key_cmd cmd,
1486                          const u8 *local_addr,
1487                          const u8 *addr,
1488                          struct ieee80211_key_conf *key)
1489 {
1490         struct ath_softc *sc = hw->priv;
1491         int ret = 0;
1492
1493         DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1494
1495         switch (cmd) {
1496         case SET_KEY:
1497                 ret = ath_key_config(sc, addr, key);
1498                 if (!ret) {
1499                         set_bit(key->keyidx, sc->sc_keymap);
1500                         key->hw_key_idx = key->keyidx;
1501                         /* push IV and Michael MIC generation to stack */
1502                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1503                         if (key->alg == ALG_TKIP)
1504                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1505                 }
1506                 break;
1507         case DISABLE_KEY:
1508                 ath_key_delete(sc, key);
1509                 clear_bit(key->keyidx, sc->sc_keymap);
1510                 sc->sc_keytype = ATH9K_CIPHER_CLR;
1511                 break;
1512         default:
1513                 ret = -EINVAL;
1514         }
1515
1516         return ret;
1517 }
1518
1519 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1520                                    struct ieee80211_vif *vif,
1521                                    struct ieee80211_bss_conf *bss_conf,
1522                                    u32 changed)
1523 {
1524         struct ath_softc *sc = hw->priv;
1525
1526         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1527                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
1528                         __func__,
1529                         bss_conf->use_short_preamble);
1530                 if (bss_conf->use_short_preamble)
1531                         sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1532                 else
1533                         sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1534         }
1535
1536         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1537                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
1538                         __func__,
1539                         bss_conf->use_cts_prot);
1540                 if (bss_conf->use_cts_prot &&
1541                     hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1542                         sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1543                 else
1544                         sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1545         }
1546
1547         if (changed & BSS_CHANGED_HT) {
1548                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n",
1549                         __func__,
1550                         bss_conf->assoc_ht);
1551                 ath9k_ht_conf(sc, bss_conf);
1552         }
1553
1554         if (changed & BSS_CHANGED_ASSOC) {
1555                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
1556                         __func__,
1557                         bss_conf->assoc);
1558                 ath9k_bss_assoc_info(sc, bss_conf);
1559         }
1560 }
1561
1562 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1563 {
1564         u64 tsf;
1565         struct ath_softc *sc = hw->priv;
1566         struct ath_hal *ah = sc->sc_ah;
1567
1568         tsf = ath9k_hw_gettsf64(ah);
1569
1570         return tsf;
1571 }
1572
1573 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1574 {
1575         struct ath_softc *sc = hw->priv;
1576         struct ath_hal *ah = sc->sc_ah;
1577
1578         ath9k_hw_reset_tsf(ah);
1579 }
1580
1581 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1582                        enum ieee80211_ampdu_mlme_action action,
1583                        struct ieee80211_sta *sta,
1584                        u16 tid, u16 *ssn)
1585 {
1586         struct ath_softc *sc = hw->priv;
1587         int ret = 0;
1588
1589         switch (action) {
1590         case IEEE80211_AMPDU_RX_START:
1591                 ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn);
1592                 if (ret < 0)
1593                         DPRINTF(sc, ATH_DBG_FATAL,
1594                                 "%s: Unable to start RX aggregation\n",
1595                                 __func__);
1596                 break;
1597         case IEEE80211_AMPDU_RX_STOP:
1598                 ret = ath_rx_aggr_stop(sc, sta->addr, tid);
1599                 if (ret < 0)
1600                         DPRINTF(sc, ATH_DBG_FATAL,
1601                                 "%s: Unable to stop RX aggregation\n",
1602                                 __func__);
1603                 break;
1604         case IEEE80211_AMPDU_TX_START:
1605                 ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn);
1606                 if (ret < 0)
1607                         DPRINTF(sc, ATH_DBG_FATAL,
1608                                 "%s: Unable to start TX aggregation\n",
1609                                 __func__);
1610                 else
1611                         ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1612                 break;
1613         case IEEE80211_AMPDU_TX_STOP:
1614                 ret = ath_tx_aggr_stop(sc, sta->addr, tid);
1615                 if (ret < 0)
1616                         DPRINTF(sc, ATH_DBG_FATAL,
1617                                 "%s: Unable to stop TX aggregation\n",
1618                                 __func__);
1619
1620                 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1621                 break;
1622         default:
1623                 DPRINTF(sc, ATH_DBG_FATAL,
1624                         "%s: Unknown AMPDU action\n", __func__);
1625         }
1626
1627         return ret;
1628 }
1629
1630 static struct ieee80211_ops ath9k_ops = {
1631         .tx                 = ath9k_tx,
1632         .start              = ath9k_start,
1633         .stop               = ath9k_stop,
1634         .add_interface      = ath9k_add_interface,
1635         .remove_interface   = ath9k_remove_interface,
1636         .config             = ath9k_config,
1637         .config_interface   = ath9k_config_interface,
1638         .configure_filter   = ath9k_configure_filter,
1639         .get_stats          = NULL,
1640         .sta_notify         = ath9k_sta_notify,
1641         .conf_tx            = ath9k_conf_tx,
1642         .get_tx_stats       = NULL,
1643         .bss_info_changed   = ath9k_bss_info_changed,
1644         .set_tim            = NULL,
1645         .set_key            = ath9k_set_key,
1646         .hw_scan            = NULL,
1647         .get_tkip_seq       = NULL,
1648         .set_rts_threshold  = NULL,
1649         .set_frag_threshold = NULL,
1650         .set_retry_limit    = NULL,
1651         .get_tsf            = ath9k_get_tsf,
1652         .reset_tsf          = ath9k_reset_tsf,
1653         .tx_last_beacon     = NULL,
1654         .ampdu_action       = ath9k_ampdu_action
1655 };
1656
1657 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1658 {
1659         void __iomem *mem;
1660         struct ath_softc *sc;
1661         struct ieee80211_hw *hw;
1662         const char *athname;
1663         u8 csz;
1664         u32 val;
1665         int ret = 0;
1666
1667         if (pci_enable_device(pdev))
1668                 return -EIO;
1669
1670         /* XXX 32-bit addressing only */
1671         if (pci_set_dma_mask(pdev, 0xffffffff)) {
1672                 printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
1673                 ret = -ENODEV;
1674                 goto bad;
1675         }
1676
1677         /*
1678          * Cache line size is used to size and align various
1679          * structures used to communicate with the hardware.
1680          */
1681         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
1682         if (csz == 0) {
1683                 /*
1684                  * Linux 2.4.18 (at least) writes the cache line size
1685                  * register as a 16-bit wide register which is wrong.
1686                  * We must have this setup properly for rx buffer
1687                  * DMA to work so force a reasonable value here if it
1688                  * comes up zero.
1689                  */
1690                 csz = L1_CACHE_BYTES / sizeof(u32);
1691                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
1692         }
1693         /*
1694          * The default setting of latency timer yields poor results,
1695          * set it to the value used by other systems. It may be worth
1696          * tweaking this setting more.
1697          */
1698         pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
1699
1700         pci_set_master(pdev);
1701
1702         /*
1703          * Disable the RETRY_TIMEOUT register (0x41) to keep
1704          * PCI Tx retries from interfering with C3 CPU state.
1705          */
1706         pci_read_config_dword(pdev, 0x40, &val);
1707         if ((val & 0x0000ff00) != 0)
1708                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1709
1710         ret = pci_request_region(pdev, 0, "ath9k");
1711         if (ret) {
1712                 dev_err(&pdev->dev, "PCI memory region reserve error\n");
1713                 ret = -ENODEV;
1714                 goto bad;
1715         }
1716
1717         mem = pci_iomap(pdev, 0, 0);
1718         if (!mem) {
1719                 printk(KERN_ERR "PCI memory map error\n") ;
1720                 ret = -EIO;
1721                 goto bad1;
1722         }
1723
1724         hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
1725         if (hw == NULL) {
1726                 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
1727                 goto bad2;
1728         }
1729
1730         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1731                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1732                 IEEE80211_HW_SIGNAL_DBM |
1733                 IEEE80211_HW_NOISE_DBM;
1734
1735         hw->wiphy->interface_modes =
1736                 BIT(NL80211_IFTYPE_AP) |
1737                 BIT(NL80211_IFTYPE_STATION) |
1738                 BIT(NL80211_IFTYPE_ADHOC);
1739
1740         SET_IEEE80211_DEV(hw, &pdev->dev);
1741         pci_set_drvdata(pdev, hw);
1742
1743         sc = hw->priv;
1744         sc->hw = hw;
1745         sc->pdev = pdev;
1746         sc->mem = mem;
1747
1748         if (ath_attach(id->device, sc) != 0) {
1749                 ret = -ENODEV;
1750                 goto bad3;
1751         }
1752
1753         /* setup interrupt service routine */
1754
1755         if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
1756                 printk(KERN_ERR "%s: request_irq failed\n",
1757                         wiphy_name(hw->wiphy));
1758                 ret = -EIO;
1759                 goto bad4;
1760         }
1761
1762         athname = ath9k_hw_probe(id->vendor, id->device);
1763
1764         printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
1765                wiphy_name(hw->wiphy),
1766                athname ? athname : "Atheros ???",
1767                (unsigned long)mem, pdev->irq);
1768
1769         return 0;
1770 bad4:
1771         ath_detach(sc);
1772 bad3:
1773         ieee80211_free_hw(hw);
1774 bad2:
1775         pci_iounmap(pdev, mem);
1776 bad1:
1777         pci_release_region(pdev, 0);
1778 bad:
1779         pci_disable_device(pdev);
1780         return ret;
1781 }
1782
1783 static void ath_pci_remove(struct pci_dev *pdev)
1784 {
1785         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1786         struct ath_softc *sc = hw->priv;
1787
1788         if (pdev->irq)
1789                 free_irq(pdev->irq, sc);
1790         ath_detach(sc);
1791         pci_iounmap(pdev, sc->mem);
1792         pci_release_region(pdev, 0);
1793         pci_disable_device(pdev);
1794         ieee80211_free_hw(hw);
1795 }
1796
1797 #ifdef CONFIG_PM
1798
1799 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1800 {
1801         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1802         struct ath_softc *sc = hw->priv;
1803
1804         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1805
1806 #ifdef CONFIG_RFKILL
1807         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1808                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1809 #endif
1810
1811         pci_save_state(pdev);
1812         pci_disable_device(pdev);
1813         pci_set_power_state(pdev, 3);
1814
1815         return 0;
1816 }
1817
1818 static int ath_pci_resume(struct pci_dev *pdev)
1819 {
1820         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1821         struct ath_softc *sc = hw->priv;
1822         u32 val;
1823         int err;
1824
1825         err = pci_enable_device(pdev);
1826         if (err)
1827                 return err;
1828         pci_restore_state(pdev);
1829         /*
1830          * Suspend/Resume resets the PCI configuration space, so we have to
1831          * re-disable the RETRY_TIMEOUT register (0x41) to keep
1832          * PCI Tx retries from interfering with C3 CPU state
1833          */
1834         pci_read_config_dword(pdev, 0x40, &val);
1835         if ((val & 0x0000ff00) != 0)
1836                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1837
1838         /* Enable LED */
1839         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1840                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1841         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1842
1843 #ifdef CONFIG_RFKILL
1844         /*
1845          * check the h/w rfkill state on resume
1846          * and start the rfkill poll timer
1847          */
1848         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1849                 queue_delayed_work(sc->hw->workqueue,
1850                                    &sc->rf_kill.rfkill_poll, 0);
1851 #endif
1852
1853         return 0;
1854 }
1855
1856 #endif /* CONFIG_PM */
1857
1858 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
1859
1860 static struct pci_driver ath_pci_driver = {
1861         .name       = "ath9k",
1862         .id_table   = ath_pci_id_table,
1863         .probe      = ath_pci_probe,
1864         .remove     = ath_pci_remove,
1865 #ifdef CONFIG_PM
1866         .suspend    = ath_pci_suspend,
1867         .resume     = ath_pci_resume,
1868 #endif /* CONFIG_PM */
1869 };
1870
1871 static int __init init_ath_pci(void)
1872 {
1873         printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
1874
1875         if (pci_register_driver(&ath_pci_driver) < 0) {
1876                 printk(KERN_ERR
1877                         "ath_pci: No devices found, driver not installed.\n");
1878                 pci_unregister_driver(&ath_pci_driver);
1879                 return -ENODEV;
1880         }
1881
1882         return 0;
1883 }
1884 module_init(init_ath_pci);
1885
1886 static void __exit exit_ath_pci(void)
1887 {
1888         pci_unregister_driver(&ath_pci_driver);
1889         printk(KERN_INFO "%s: driver unloaded\n", dev_info);
1890 }
1891 module_exit(exit_ath_pci);