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

   1 /*
   2  * Copyright (c) 2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /* mac80211 and PCI callbacks */
  18
  19 #include <linux/nl80211.h>
  20 #include "core.h"
  21 #include "reg.h"
  22
  23 #define ATH_PCI_VERSION "0.1"
  24
  25 static char *dev_info = "ath9k";
  26
  27 MODULE_AUTHOR("Atheros Communications");
  28 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
  29 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
  30 MODULE_LICENSE("Dual BSD/GPL");
  31
  32 static struct pci_device_id ath_pci_id_table[] __devinitdata = {
  33         { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
  34         { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
  35         { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
  36         { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
  37         { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
  38         { 0 }
  39 };
  40
  41 static void ath_detach(struct ath_softc *sc);
  42
  43 static int ath_get_channel(struct ath_softc *sc,
  44                            struct ieee80211_channel *chan)
  45 {
  46         int i;
  47
  48         for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
  49                 if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
  50                         return i;
  51         }
  52
  53         return -1;
  54 }
  55
  56 static u32 ath_get_extchanmode(struct ath_softc *sc,
  57                                      struct ieee80211_channel *chan)
  58 {
  59         u32 chanmode = 0;
  60         u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
  61         enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;
  62
  63         switch (chan->band) {
  64         case IEEE80211_BAND_2GHZ:
  65                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
  66                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  67                         chanmode = CHANNEL_G_HT20;
  68                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
  69                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  70                         chanmode = CHANNEL_G_HT40PLUS;
  71                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
  72                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  73                         chanmode = CHANNEL_G_HT40MINUS;
  74                 break;
  75         case IEEE80211_BAND_5GHZ:
  76                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
  77                     (tx_chan_width == ATH9K_HT_MACMODE_20))
  78                         chanmode = CHANNEL_A_HT20;
  79                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
  80                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  81                         chanmode = CHANNEL_A_HT40PLUS;
  82                 if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
  83                     (tx_chan_width == ATH9K_HT_MACMODE_2040))
  84                         chanmode = CHANNEL_A_HT40MINUS;
  85                 break;
  86         default:
  87                 break;
  88         }
  89
  90         return chanmode;
  91 }
  92
  93
  94 static int ath_setkey_tkip(struct ath_softc *sc,
  95                            struct ieee80211_key_conf *key,
  96                            struct ath9k_keyval *hk,
  97                            const u8 *addr)
  98 {
  99         u8 *key_rxmic = NULL;
 100         u8 *key_txmic = NULL;
 101
 102         key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
 103         key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
 104
 105         if (addr == NULL) {
 106                 /* Group key installation */
 107                 memcpy(hk->kv_mic,  key_rxmic, sizeof(hk->kv_mic));
 108                 return ath_keyset(sc, key->keyidx, hk, addr);
 109         }
 110         if (!sc->sc_splitmic) {
 111                 /*
 112                  * data key goes at first index,
 113                  * the hal handles the MIC keys at index+64.
 114                  */
 115                 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
 116                 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
 117                 return ath_keyset(sc, key->keyidx, hk, addr);
 118         }
 119         /*
 120          * TX key goes at first index, RX key at +32.
 121          * The hal handles the MIC keys at index+64.
 122          */
 123         memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
 124         if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
 125                 /* Txmic entry failed. No need to proceed further */
 126                 DPRINTF(sc, ATH_DBG_KEYCACHE,
 127                         "%s Setting TX MIC Key Failed\n", __func__);
 128                 return 0;
 129         }
 130
 131         memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
 132         /* XXX delete tx key on failure? */
 133         return ath_keyset(sc, key->keyidx+32, hk, addr);
 134 }
 135
 136 static int ath_key_config(struct ath_softc *sc,
 137                           const u8 *addr,
 138                           struct ieee80211_key_conf *key)
 139 {
 140         struct ieee80211_vif *vif;
 141         struct ath9k_keyval hk;
 142         const u8 *mac = NULL;
 143         int ret = 0;
 144         enum nl80211_iftype opmode;
 145
 146         memset(&hk, 0, sizeof(hk));
 147
 148         switch (key->alg) {
 149         case ALG_WEP:
 150                 hk.kv_type = ATH9K_CIPHER_WEP;
 151                 break;
 152         case ALG_TKIP:
 153                 hk.kv_type = ATH9K_CIPHER_TKIP;
 154                 break;
 155         case ALG_CCMP:
 156                 hk.kv_type = ATH9K_CIPHER_AES_CCM;
 157                 break;
 158         default:
 159                 return -EINVAL;
 160         }
 161
 162         hk.kv_len  = key->keylen;
 163         memcpy(hk.kv_val, key->key, key->keylen);
 164
 165         if (!sc->sc_vaps[0])
 166                 return -EIO;
 167
 168         vif = sc->sc_vaps[0];
 169         opmode = vif->type;
 170
 171         /*
 172          *  Strategy:
 173          *   For _M_STA mc tx, we will not setup a key at all since we never
 174          *   tx mc.
 175          *   _M_STA mc rx, we will use the keyID.
 176          *   for _M_IBSS mc tx, we will use the keyID, and no macaddr.
 177          *   for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
 178          *   peer node. BUT we will plumb a cleartext key so that we can do
 179          *   perSta default key table lookup in software.
 180          */
 181         if (is_broadcast_ether_addr(addr)) {
 182                 switch (opmode) {
 183                 case NL80211_IFTYPE_STATION:
 184                         /* default key:  could be group WPA key
 185                          * or could be static WEP key */
 186                         mac = NULL;
 187                         break;
 188                 case NL80211_IFTYPE_ADHOC:
 189                         break;
 190                 case NL80211_IFTYPE_AP:
 191                         break;
 192                 default:
 193                         ASSERT(0);
 194                         break;
 195                 }
 196         } else {
 197                 mac = addr;
 198         }
 199
 200         if (key->alg == ALG_TKIP)
 201                 ret = ath_setkey_tkip(sc, key, &hk, mac);
 202         else
 203                 ret = ath_keyset(sc, key->keyidx, &hk, mac);
 204
 205         if (!ret)
 206                 return -EIO;
 207
 208         return 0;
 209 }
 210
 211 static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
 212 {
 213         int freeslot;
 214
 215         freeslot = (key->keyidx >= 4) ? 1 : 0;
 216         ath_key_reset(sc, key->keyidx, freeslot);
 217 }
 218
 219 static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)
 220 {
 221 #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3       /* 2 ^ 16 */
 222 #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6          /* 8 usec */
 223
 224         ht_info->ht_supported = true;
 225         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 226                        IEEE80211_HT_CAP_SM_PS |
 227                        IEEE80211_HT_CAP_SGI_40 |
 228                        IEEE80211_HT_CAP_DSSSCCK40;
 229
 230         ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
 231         ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
 232         /* set up supported mcs set */
 233         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 234         ht_info->mcs.rx_mask[0] = 0xff;
 235         ht_info->mcs.rx_mask[1] = 0xff;
 236         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 237 }
 238
 239 static void ath9k_ht_conf(struct ath_softc *sc,
 240                           struct ieee80211_bss_conf *bss_conf)
 241 {
 242         struct ath_ht_info *ht_info = &sc->sc_ht_info;
 243
 244         if (sc->hw->conf.ht.enabled) {
 245                 ht_info->ext_chan_offset = bss_conf->ht.secondary_channel_offset;
 246
 247                 if (bss_conf->ht.width_40_ok)
 248                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
 249                 else
 250                         ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
 251
 252                 ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
 253         }
 254 }
 255
 256 static void ath9k_bss_assoc_info(struct ath_softc *sc,
 257                                  struct ieee80211_vif *vif,
 258                                  struct ieee80211_bss_conf *bss_conf)
 259 {
 260         struct ieee80211_hw *hw = sc->hw;
 261         struct ieee80211_channel *curchan = hw->conf.channel;
 262         struct ath_vap *avp = (void *)vif->drv_priv;
 263         int pos;
 264
 265         if (bss_conf->assoc) {
 266                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
 267                         __func__,
 268                         bss_conf->aid);
 269
 270                 /* New association, store aid */
 271                 if (avp->av_opmode == ATH9K_M_STA) {
 272                         sc->sc_curaid = bss_conf->aid;
 273                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
 274                                                sc->sc_curaid);
 275                 }
 276
 277                 /* Configure the beacon */
 278                 ath_beacon_config(sc, 0);
 279                 sc->sc_flags |= SC_OP_BEACONS;
 280
 281                 /* Reset rssi stats */
 282                 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
 283                 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
 284                 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
 285                 sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
 286
 287                 /* Update chainmask */
 288                 ath_update_chainmask(sc, hw->conf.ht.enabled);
 289
 290                 DPRINTF(sc, ATH_DBG_CONFIG,
 291                         "%s: bssid %pM aid 0x%x\n",
 292                         __func__,
 293                         sc->sc_curbssid, sc->sc_curaid);
 294
 295                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
 296                         __func__,
 297                         curchan->center_freq);
 298
 299                 pos = ath_get_channel(sc, curchan);
 300                 if (pos == -1) {
 301                         DPRINTF(sc, ATH_DBG_FATAL,
 302                                 "%s: Invalid channel\n", __func__);
 303                         return;
 304                 }
 305
 306                 if (hw->conf.ht.enabled)
 307                         sc->sc_ah->ah_channels[pos].chanmode =
 308                                 ath_get_extchanmode(sc, curchan);
 309                 else
 310                         sc->sc_ah->ah_channels[pos].chanmode =
 311                                 (curchan->band == IEEE80211_BAND_2GHZ) ?
 312                                 CHANNEL_G : CHANNEL_A;
 313
 314                 /* set h/w channel */
 315                 if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
 316                         DPRINTF(sc, ATH_DBG_FATAL,
 317                                 "%s: Unable to set channel\n",
 318                                 __func__);
 319                 /* Start ANI */
 320                 mod_timer(&sc->sc_ani.timer,
 321                         jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
 322
 323         } else {
 324                 DPRINTF(sc, ATH_DBG_CONFIG,
 325                 "%s: Bss Info DISSOC\n", __func__);
 326                 sc->sc_curaid = 0;
 327         }
 328 }
 329
 330 void ath_get_beaconconfig(struct ath_softc *sc,
 331                           int if_id,
 332                           struct ath_beacon_config *conf)
 333 {
 334         struct ieee80211_hw *hw = sc->hw;
 335
 336         /* fill in beacon config data */
 337
 338         conf->beacon_interval = hw->conf.beacon_int;
 339         conf->listen_interval = 100;
 340         conf->dtim_count = 1;
 341         conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
 342 }
 343
 344 /********************************/
 345 /*       LED functions          */
 346 /********************************/
 347
 348 static void ath_led_brightness(struct led_classdev *led_cdev,
 349                                enum led_brightness brightness)
 350 {
 351         struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
 352         struct ath_softc *sc = led->sc;
 353
 354         switch (brightness) {
 355         case LED_OFF:
 356                 if (led->led_type == ATH_LED_ASSOC ||
 357                     led->led_type == ATH_LED_RADIO)
 358                         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 359                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
 360                                 (led->led_type == ATH_LED_RADIO) ? 1 :
 361                                 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
 362                 break;
 363         case LED_FULL:
 364                 if (led->led_type == ATH_LED_ASSOC)
 365                         sc->sc_flags |= SC_OP_LED_ASSOCIATED;
 366                 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
 367                 break;
 368         default:
 369                 break;
 370         }
 371 }
 372
 373 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
 374                             char *trigger)
 375 {
 376         int ret;
 377
 378         led->sc = sc;
 379         led->led_cdev.name = led->name;
 380         led->led_cdev.default_trigger = trigger;
 381         led->led_cdev.brightness_set = ath_led_brightness;
 382
 383         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
 384         if (ret)
 385                 DPRINTF(sc, ATH_DBG_FATAL,
 386                         "Failed to register led:%s", led->name);
 387         else
 388                 led->registered = 1;
 389         return ret;
 390 }
 391
 392 static void ath_unregister_led(struct ath_led *led)
 393 {
 394         if (led->registered) {
 395                 led_classdev_unregister(&led->led_cdev);
 396                 led->registered = 0;
 397         }
 398 }
 399
 400 static void ath_deinit_leds(struct ath_softc *sc)
 401 {
 402         ath_unregister_led(&sc->assoc_led);
 403         sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
 404         ath_unregister_led(&sc->tx_led);
 405         ath_unregister_led(&sc->rx_led);
 406         ath_unregister_led(&sc->radio_led);
 407         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 408 }
 409
 410 static void ath_init_leds(struct ath_softc *sc)
 411 {
 412         char *trigger;
 413         int ret;
 414
 415         /* Configure gpio 1 for output */
 416         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
 417                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 418         /* LED off, active low */
 419         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 420
 421         trigger = ieee80211_get_radio_led_name(sc->hw);
 422         snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
 423                 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
 424         ret = ath_register_led(sc, &sc->radio_led, trigger);
 425         sc->radio_led.led_type = ATH_LED_RADIO;
 426         if (ret)
 427                 goto fail;
 428
 429         trigger = ieee80211_get_assoc_led_name(sc->hw);
 430         snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
 431                 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
 432         ret = ath_register_led(sc, &sc->assoc_led, trigger);
 433         sc->assoc_led.led_type = ATH_LED_ASSOC;
 434         if (ret)
 435                 goto fail;
 436
 437         trigger = ieee80211_get_tx_led_name(sc->hw);
 438         snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
 439                 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
 440         ret = ath_register_led(sc, &sc->tx_led, trigger);
 441         sc->tx_led.led_type = ATH_LED_TX;
 442         if (ret)
 443                 goto fail;
 444
 445         trigger = ieee80211_get_rx_led_name(sc->hw);
 446         snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
 447                 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
 448         ret = ath_register_led(sc, &sc->rx_led, trigger);
 449         sc->rx_led.led_type = ATH_LED_RX;
 450         if (ret)
 451                 goto fail;
 452
 453         return;
 454
 455 fail:
 456         ath_deinit_leds(sc);
 457 }
 458
 459 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
 460
 461 /*******************/
 462 /*      Rfkill     */
 463 /*******************/
 464
 465 static void ath_radio_enable(struct ath_softc *sc)
 466 {
 467         struct ath_hal *ah = sc->sc_ah;
 468         int status;
 469
 470         spin_lock_bh(&sc->sc_resetlock);
 471         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 472                             sc->sc_ht_info.tx_chan_width,
 473                             sc->sc_tx_chainmask,
 474                             sc->sc_rx_chainmask,
 475                             sc->sc_ht_extprotspacing,
 476                             false, &status)) {
 477                 DPRINTF(sc, ATH_DBG_FATAL,
 478                         "%s: unable to reset channel %u (%uMhz) "
 479                         "flags 0x%x hal status %u\n", __func__,
 480                         ath9k_hw_mhz2ieee(ah,
 481                                           ah->ah_curchan->channel,
 482                                           ah->ah_curchan->channelFlags),
 483                         ah->ah_curchan->channel,
 484                         ah->ah_curchan->channelFlags, status);
 485         }
 486         spin_unlock_bh(&sc->sc_resetlock);
 487
 488         ath_update_txpow(sc);
 489         if (ath_startrecv(sc) != 0) {
 490                 DPRINTF(sc, ATH_DBG_FATAL,
 491                         "%s: unable to restart recv logic\n", __func__);
 492                 return;
 493         }
 494
 495         if (sc->sc_flags & SC_OP_BEACONS)
 496                 ath_beacon_config(sc, ATH_IF_ID_ANY);   /* restart beacons */
 497
 498         /* Re-Enable  interrupts */
 499         ath9k_hw_set_interrupts(ah, sc->sc_imask);
 500
 501         /* Enable LED */
 502         ath9k_hw_cfg_output(ah, ATH_LED_PIN,
 503                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 504         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
 505
 506         ieee80211_wake_queues(sc->hw);
 507 }
 508
 509 static void ath_radio_disable(struct ath_softc *sc)
 510 {
 511         struct ath_hal *ah = sc->sc_ah;
 512         int status;
 513
 514
 515         ieee80211_stop_queues(sc->hw);
 516
 517         /* Disable LED */
 518         ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
 519         ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
 520
 521         /* Disable interrupts */
 522         ath9k_hw_set_interrupts(ah, 0);
 523
 524         ath_draintxq(sc, false);        /* clear pending tx frames */
 525         ath_stoprecv(sc);               /* turn off frame recv */
 526         ath_flushrecv(sc);              /* flush recv queue */
 527
 528         spin_lock_bh(&sc->sc_resetlock);
 529         if (!ath9k_hw_reset(ah, ah->ah_curchan,
 530                             sc->sc_ht_info.tx_chan_width,
 531                             sc->sc_tx_chainmask,
 532                             sc->sc_rx_chainmask,
 533                             sc->sc_ht_extprotspacing,
 534                             false, &status)) {
 535                 DPRINTF(sc, ATH_DBG_FATAL,
 536                         "%s: unable to reset channel %u (%uMhz) "
 537                         "flags 0x%x hal status %u\n", __func__,
 538                         ath9k_hw_mhz2ieee(ah,
 539                                 ah->ah_curchan->channel,
 540                                 ah->ah_curchan->channelFlags),
 541                         ah->ah_curchan->channel,
 542                         ah->ah_curchan->channelFlags, status);
 543         }
 544         spin_unlock_bh(&sc->sc_resetlock);
 545
 546         ath9k_hw_phy_disable(ah);
 547         ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 548 }
 549
 550 static bool ath_is_rfkill_set(struct ath_softc *sc)
 551 {
 552         struct ath_hal *ah = sc->sc_ah;
 553
 554         return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
 555                                   ah->ah_rfkill_polarity;
 556 }
 557
 558 /* h/w rfkill poll function */
 559 static void ath_rfkill_poll(struct work_struct *work)
 560 {
 561         struct ath_softc *sc = container_of(work, struct ath_softc,
 562                                             rf_kill.rfkill_poll.work);
 563         bool radio_on;
 564
 565         if (sc->sc_flags & SC_OP_INVALID)
 566                 return;
 567
 568         radio_on = !ath_is_rfkill_set(sc);
 569
 570         /*
 571          * enable/disable radio only when there is a
 572          * state change in RF switch
 573          */
 574         if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
 575                 enum rfkill_state state;
 576
 577                 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
 578                         state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
 579                                 : RFKILL_STATE_HARD_BLOCKED;
 580                 } else if (radio_on) {
 581                         ath_radio_enable(sc);
 582                         state = RFKILL_STATE_UNBLOCKED;
 583                 } else {
 584                         ath_radio_disable(sc);
 585                         state = RFKILL_STATE_HARD_BLOCKED;
 586                 }
 587
 588                 if (state == RFKILL_STATE_HARD_BLOCKED)
 589                         sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
 590                 else
 591                         sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
 592
 593                 rfkill_force_state(sc->rf_kill.rfkill, state);
 594         }
 595
 596         queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
 597                            msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
 598 }
 599
 600 /* s/w rfkill handler */
 601 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
 602 {
 603         struct ath_softc *sc = data;
 604
 605         switch (state) {
 606         case RFKILL_STATE_SOFT_BLOCKED:
 607                 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
 608                     SC_OP_RFKILL_SW_BLOCKED)))
 609                         ath_radio_disable(sc);
 610                 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
 611                 return 0;
 612         case RFKILL_STATE_UNBLOCKED:
 613                 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
 614                         sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
 615                         if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
 616                                 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
 617                                         "radio as it is disabled by h/w \n");
 618                                 return -EPERM;
 619                         }
 620                         ath_radio_enable(sc);
 621                 }
 622                 return 0;
 623         default:
 624                 return -EINVAL;
 625         }
 626 }
 627
 628 /* Init s/w rfkill */
 629 static int ath_init_sw_rfkill(struct ath_softc *sc)
 630 {
 631         sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
 632                                              RFKILL_TYPE_WLAN);
 633         if (!sc->rf_kill.rfkill) {
 634                 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
 635                 return -ENOMEM;
 636         }
 637
 638         snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
 639                 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
 640         sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
 641         sc->rf_kill.rfkill->data = sc;
 642         sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
 643         sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
 644         sc->rf_kill.rfkill->user_claim_unsupported = 1;
 645
 646         return 0;
 647 }
 648
 649 /* Deinitialize rfkill */
 650 static void ath_deinit_rfkill(struct ath_softc *sc)
 651 {
 652         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 653                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
 654
 655         if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
 656                 rfkill_unregister(sc->rf_kill.rfkill);
 657                 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
 658                 sc->rf_kill.rfkill = NULL;
 659         }
 660 }
 661
 662 static int ath_start_rfkill_poll(struct ath_softc *sc)
 663 {
 664         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 665                 queue_delayed_work(sc->hw->workqueue,
 666                                    &sc->rf_kill.rfkill_poll, 0);
 667
 668         if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
 669                 if (rfkill_register(sc->rf_kill.rfkill)) {
 670                         DPRINTF(sc, ATH_DBG_FATAL,
 671                                 "Unable to register rfkill\n");
 672                         rfkill_free(sc->rf_kill.rfkill);
 673
 674                         /* Deinitialize the device */
 675                         ath_detach(sc);
 676                         if (sc->pdev->irq)
 677                                 free_irq(sc->pdev->irq, sc);
 678                         pci_iounmap(sc->pdev, sc->mem);
 679                         pci_release_region(sc->pdev, 0);
 680                         pci_disable_device(sc->pdev);
 681                         ieee80211_free_hw(sc->hw);
 682                         return -EIO;
 683                 } else {
 684                         sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
 685                 }
 686         }
 687
 688         return 0;
 689 }
 690 #endif /* CONFIG_RFKILL */
 691
 692 static void ath_detach(struct ath_softc *sc)
 693 {
 694         struct ieee80211_hw *hw = sc->hw;
 695         int i = 0;
 696
 697         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 698
 699 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
 700         ath_deinit_rfkill(sc);
 701 #endif
 702         ath_deinit_leds(sc);
 703
 704         ieee80211_unregister_hw(hw);
 705
 706         ath_rate_control_unregister();
 707
 708         ath_rx_cleanup(sc);
 709         ath_tx_cleanup(sc);
 710
 711         tasklet_kill(&sc->intr_tq);
 712         tasklet_kill(&sc->bcon_tasklet);
 713
 714         if (!(sc->sc_flags & SC_OP_INVALID))
 715                 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
 716
 717         /* cleanup tx queues */
 718         for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
 719                 if (ATH_TXQ_SETUP(sc, i))
 720                         ath_tx_cleanupq(sc, &sc->sc_txq[i]);
 721
 722         ath9k_hw_detach(sc->sc_ah);
 723 }
 724
 725 static int ath_attach(u16 devid, struct ath_softc *sc)
 726 {
 727         struct ieee80211_hw *hw = sc->hw;
 728         int error = 0;
 729
 730         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
 731
 732         error = ath_init(devid, sc);
 733         if (error != 0)
 734                 return error;
 735
 736         /* get mac address from hardware and set in mac80211 */
 737
 738         SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
 739
 740         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
 741                 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 742                 IEEE80211_HW_SIGNAL_DBM |
 743                 IEEE80211_HW_AMPDU_AGGREGATION;
 744
 745         hw->wiphy->interface_modes =
 746                 BIT(NL80211_IFTYPE_AP) |
 747                 BIT(NL80211_IFTYPE_STATION) |
 748                 BIT(NL80211_IFTYPE_ADHOC);
 749
 750         hw->queues = 4;
 751         hw->max_rates = 4;
 752         hw->max_rate_tries = ATH_11N_TXMAXTRY;
 753         hw->sta_data_size = sizeof(struct ath_node);
 754         hw->vif_data_size = sizeof(struct ath_vap);
 755
 756         /* Register rate control */
 757         hw->rate_control_algorithm = "ath9k_rate_control";
 758         error = ath_rate_control_register();
 759         if (error != 0) {
 760                 DPRINTF(sc, ATH_DBG_FATAL,
 761                         "%s: Unable to register rate control "
 762                         "algorithm:%d\n", __func__, error);
 763                 ath_rate_control_unregister();
 764                 goto bad;
 765         }
 766
 767         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
 768                 setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
 769                 if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
 770                         setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 771         }
 772
 773         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ];
 774         if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes))
 775                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 776                         &sc->sbands[IEEE80211_BAND_5GHZ];
 777
 778         /* initialize tx/rx engine */
 779         error = ath_tx_init(sc, ATH_TXBUF);
 780         if (error != 0)
 781                 goto detach;
 782
 783         error = ath_rx_init(sc, ATH_RXBUF);
 784         if (error != 0)
 785                 goto detach;
 786
 787 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
 788         /* Initialze h/w Rfkill */
 789         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 790                 INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
 791
 792         /* Initialize s/w rfkill */
 793         if (ath_init_sw_rfkill(sc))
 794                 goto detach;
 795 #endif
 796
 797         error = ieee80211_register_hw(hw);
 798         if (error != 0) {
 799                 ath_rate_control_unregister();
 800                 goto bad;
 801         }
 802
 803         /* Initialize LED control */
 804         ath_init_leds(sc);
 805
 806         return 0;
 807 detach:
 808         ath_detach(sc);
 809 bad:
 810         return error;
 811 }
 812
 813 static int ath9k_start(struct ieee80211_hw *hw)
 814 {
 815         struct ath_softc *sc = hw->priv;
 816         struct ieee80211_channel *curchan = hw->conf.channel;
 817         int error = 0, pos;
 818
 819         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
 820                 "initial channel: %d MHz\n", __func__, curchan->center_freq);
 821
 822         memset(&sc->sc_ht_info, 0, sizeof(struct ath_ht_info));
 823
 824         /* setup initial channel */
 825
 826         pos = ath_get_channel(sc, curchan);
 827         if (pos == -1) {
 828                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
 829                 error = -EINVAL;
 830                 goto exit;
 831         }
 832
 833         sc->sc_ah->ah_channels[pos].chanmode =
 834                 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
 835
 836         error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
 837         if (error) {
 838                 DPRINTF(sc, ATH_DBG_FATAL,
 839                         "%s: Unable to complete ath_open\n", __func__);
 840                 goto exit;
 841         }
 842
 843 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
 844         error = ath_start_rfkill_poll(sc);
 845 #endif
 846
 847 exit:
 848         return error;
 849 }
 850
 851 static int ath9k_tx(struct ieee80211_hw *hw,
 852                     struct sk_buff *skb)
 853 {
 854         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 855         struct ath_softc *sc = hw->priv;
 856         struct ath_tx_control txctl;
 857         int hdrlen, padsize;
 858
 859         memset(&txctl, 0, sizeof(struct ath_tx_control));
 860
 861         /*
 862          * As a temporary workaround, assign seq# here; this will likely need
 863          * to be cleaned up to work better with Beacon transmission and virtual
 864          * BSSes.
 865          */
 866         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 867                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 868                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 869                         sc->seq_no += 0x10;
 870                 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 871                 hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
 872         }
 873
 874         /* Add the padding after the header if this is not already done */
 875         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 876         if (hdrlen & 3) {
 877                 padsize = hdrlen % 4;
 878                 if (skb_headroom(skb) < padsize)
 879                         return -1;
 880                 skb_push(skb, padsize);
 881                 memmove(skb->data, skb->data + padsize, hdrlen);
 882         }
 883
 884         /* Check if a tx queue is available */
 885
 886         txctl.txq = ath_test_get_txq(sc, skb);
 887         if (!txctl.txq)
 888                 goto exit;
 889
 890         DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
 891                 __func__,
 892                 skb);
 893
 894         if (ath_tx_start(sc, skb, &txctl) != 0) {
 895                 DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
 896                 goto exit;
 897         }
 898
 899         return 0;
 900 exit:
 901         dev_kfree_skb_any(skb);
 902         return 0;
 903 }
 904
 905 static void ath9k_stop(struct ieee80211_hw *hw)
 906 {
 907         struct ath_softc *sc = hw->priv;
 908
 909         if (sc->sc_flags & SC_OP_INVALID) {
 910                 DPRINTF(sc, ATH_DBG_ANY, "%s: Device not present\n", __func__);
 911                 return;
 912         }
 913
 914         ath_stop(sc);
 915
 916         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
 917 }
 918
 919 static int ath9k_add_interface(struct ieee80211_hw *hw,
 920                                struct ieee80211_if_init_conf *conf)
 921 {
 922         struct ath_softc *sc = hw->priv;
 923         struct ath_vap *avp = (void *)conf->vif->drv_priv;
 924         int ic_opmode = 0;
 925
 926         /* Support only vap for now */
 927
 928         if (sc->sc_nvaps)
 929                 return -ENOBUFS;
 930
 931         switch (conf->type) {
 932         case NL80211_IFTYPE_STATION:
 933                 ic_opmode = ATH9K_M_STA;
 934                 break;
 935         case NL80211_IFTYPE_ADHOC:
 936                 ic_opmode = ATH9K_M_IBSS;
 937                 break;
 938         case NL80211_IFTYPE_AP:
 939                 ic_opmode = ATH9K_M_HOSTAP;
 940                 break;
 941         default:
 942                 DPRINTF(sc, ATH_DBG_FATAL,
 943                         "%s: Interface type %d not yet supported\n",
 944                         __func__, conf->type);
 945                 return -EOPNOTSUPP;
 946         }
 947
 948         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
 949                 __func__,
 950                 ic_opmode);
 951
 952         /* Set the VAP opmode */
 953         avp->av_opmode = ic_opmode;
 954         avp->av_bslot = -1;
 955
 956         if (ic_opmode == ATH9K_M_HOSTAP)
 957                 ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
 958
 959         sc->sc_vaps[0] = conf->vif;
 960         sc->sc_nvaps++;
 961
 962         /* Set the device opmode */
 963         sc->sc_ah->ah_opmode = ic_opmode;
 964
 965         if (conf->type == NL80211_IFTYPE_AP) {
 966                 /* TODO: is this a suitable place to start ANI for AP mode? */
 967                 /* Start ANI */
 968                 mod_timer(&sc->sc_ani.timer,
 969                           jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
 970         }
 971
 972         return 0;
 973 }
 974
 975 static void ath9k_remove_interface(struct ieee80211_hw *hw,
 976                                    struct ieee80211_if_init_conf *conf)
 977 {
 978         struct ath_softc *sc = hw->priv;
 979         struct ath_vap *avp = (void *)conf->vif->drv_priv;
 980
 981         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
 982
 983 #ifdef CONFIG_SLOW_ANT_DIV
 984         ath_slow_ant_div_stop(&sc->sc_antdiv);
 985 #endif
 986         /* Stop ANI */
 987         del_timer_sync(&sc->sc_ani.timer);
 988
 989         /* Reclaim beacon resources */
 990         if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP ||
 991             sc->sc_ah->ah_opmode == ATH9K_M_IBSS) {
 992                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
 993                 ath_beacon_return(sc, avp);
 994         }
 995
 996         sc->sc_flags &= ~SC_OP_BEACONS;
 997
 998         sc->sc_vaps[0] = NULL;
 999         sc->sc_nvaps--;
1000 }
1001
1002 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1003 {
1004         struct ath_softc *sc = hw->priv;
1005         struct ieee80211_channel *curchan = hw->conf.channel;
1006         struct ieee80211_conf *conf = &hw->conf;
1007         int pos;
1008
1009         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
1010                 __func__,
1011                 curchan->center_freq);
1012
1013         /* Update chainmask */
1014         ath_update_chainmask(sc, conf->ht.enabled);
1015
1016         pos = ath_get_channel(sc, curchan);
1017         if (pos == -1) {
1018                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
1019                 return -EINVAL;
1020         }
1021
1022         sc->sc_ah->ah_channels[pos].chanmode =
1023                 (curchan->band == IEEE80211_BAND_2GHZ) ?
1024                 CHANNEL_G : CHANNEL_A;
1025
1026         if (sc->sc_curaid && hw->conf.ht.enabled)
1027                 sc->sc_ah->ah_channels[pos].chanmode =
1028                         ath_get_extchanmode(sc, curchan);
1029
1030         if (changed & IEEE80211_CONF_CHANGE_POWER)
1031                 sc->sc_config.txpowlimit = 2 * conf->power_level;
1032
1033         /* set h/w channel */
1034         if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
1035                 DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
1036                         __func__);
1037
1038         return 0;
1039 }
1040
1041 static int ath9k_config_interface(struct ieee80211_hw *hw,
1042                                   struct ieee80211_vif *vif,
1043                                   struct ieee80211_if_conf *conf)
1044 {
1045         struct ath_softc *sc = hw->priv;
1046         struct ath_hal *ah = sc->sc_ah;
1047         struct ath_vap *avp = (void *)vif->drv_priv;
1048         u32 rfilt = 0;
1049         int error, i;
1050
1051         /* TODO: Need to decide which hw opmode to use for multi-interface
1052          * cases */
1053         if (vif->type == NL80211_IFTYPE_AP &&
1054             ah->ah_opmode != ATH9K_M_HOSTAP) {
1055                 ah->ah_opmode = ATH9K_M_HOSTAP;
1056                 ath9k_hw_setopmode(ah);
1057                 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
1058                 /* Request full reset to get hw opmode changed properly */
1059                 sc->sc_flags |= SC_OP_FULL_RESET;
1060         }
1061
1062         if ((conf->changed & IEEE80211_IFCC_BSSID) &&
1063             !is_zero_ether_addr(conf->bssid)) {
1064                 switch (vif->type) {
1065                 case NL80211_IFTYPE_STATION:
1066                 case NL80211_IFTYPE_ADHOC:
1067                         /* Set BSSID */
1068                         memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
1069                         sc->sc_curaid = 0;
1070                         ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
1071                                                sc->sc_curaid);
1072
1073                         /* Set aggregation protection mode parameters */
1074                         sc->sc_config.ath_aggr_prot = 0;
1075
1076                         DPRINTF(sc, ATH_DBG_CONFIG,
1077                                 "%s: RX filter 0x%x bssid %pM aid 0x%x\n",
1078                                 __func__, rfilt,
1079                                 sc->sc_curbssid, sc->sc_curaid);
1080
1081                         /* need to reconfigure the beacon */
1082                         sc->sc_flags &= ~SC_OP_BEACONS ;
1083
1084                         break;
1085                 default:
1086                         break;
1087                 }
1088         }
1089
1090         if ((conf->changed & IEEE80211_IFCC_BEACON) &&
1091             ((vif->type == NL80211_IFTYPE_ADHOC) ||
1092              (vif->type == NL80211_IFTYPE_AP))) {
1093                 /*
1094                  * Allocate and setup the beacon frame.
1095                  *
1096                  * Stop any previous beacon DMA.  This may be
1097                  * necessary, for example, when an ibss merge
1098                  * causes reconfiguration; we may be called
1099                  * with beacon transmission active.
1100                  */
1101                 ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
1102
1103                 error = ath_beacon_alloc(sc, 0);
1104                 if (error != 0)
1105                         return error;
1106
1107                 ath_beacon_sync(sc, 0);
1108         }
1109
1110         /* Check for WLAN_CAPABILITY_PRIVACY ? */
1111         if ((avp->av_opmode != ATH9K_M_STA)) {
1112                 for (i = 0; i < IEEE80211_WEP_NKID; i++)
1113                         if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
1114                                 ath9k_hw_keysetmac(sc->sc_ah,
1115                                                    (u16)i,
1116                                                    sc->sc_curbssid);
1117         }
1118
1119         /* Only legacy IBSS for now */
1120         if (vif->type == NL80211_IFTYPE_ADHOC)
1121                 ath_update_chainmask(sc, 0);
1122
1123         return 0;
1124 }
1125
1126 #define SUPPORTED_FILTERS                       \
1127         (FIF_PROMISC_IN_BSS |                   \
1128         FIF_ALLMULTI |                          \
1129         FIF_CONTROL |                           \
1130         FIF_OTHER_BSS |                         \
1131         FIF_BCN_PRBRESP_PROMISC |               \
1132         FIF_FCSFAIL)
1133
1134 /* FIXME: sc->sc_full_reset ? */
1135 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1136                                    unsigned int changed_flags,
1137                                    unsigned int *total_flags,
1138                                    int mc_count,
1139                                    struct dev_mc_list *mclist)
1140 {
1141         struct ath_softc *sc = hw->priv;
1142         u32 rfilt;
1143
1144         changed_flags &= SUPPORTED_FILTERS;
1145         *total_flags &= SUPPORTED_FILTERS;
1146
1147         sc->rx_filter = *total_flags;
1148         rfilt = ath_calcrxfilter(sc);
1149         ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1150
1151         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1152                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1153                         ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
1154         }
1155
1156         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n",
1157                 __func__, sc->rx_filter);
1158 }
1159
1160 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1161                              struct ieee80211_vif *vif,
1162                              enum sta_notify_cmd cmd,
1163                              struct ieee80211_sta *sta)
1164 {
1165         struct ath_softc *sc = hw->priv;
1166
1167         switch (cmd) {
1168         case STA_NOTIFY_ADD:
1169                 ath_node_attach(sc, sta);
1170                 break;
1171         case STA_NOTIFY_REMOVE:
1172                 ath_node_detach(sc, sta);
1173                 break;
1174         default:
1175                 break;
1176         }
1177 }
1178
1179 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1180                          u16 queue,
1181                          const struct ieee80211_tx_queue_params *params)
1182 {
1183         struct ath_softc *sc = hw->priv;
1184         struct ath9k_tx_queue_info qi;
1185         int ret = 0, qnum;
1186
1187         if (queue >= WME_NUM_AC)
1188                 return 0;
1189
1190         qi.tqi_aifs = params->aifs;
1191         qi.tqi_cwmin = params->cw_min;
1192         qi.tqi_cwmax = params->cw_max;
1193         qi.tqi_burstTime = params->txop;
1194         qnum = ath_get_hal_qnum(queue, sc);
1195
1196         DPRINTF(sc, ATH_DBG_CONFIG,
1197                 "%s: Configure tx [queue/halq] [%d/%d],  "
1198                 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1199                 __func__,
1200                 queue,
1201                 qnum,
1202                 params->aifs,
1203                 params->cw_min,
1204                 params->cw_max,
1205                 params->txop);
1206
1207         ret = ath_txq_update(sc, qnum, &qi);
1208         if (ret)
1209                 DPRINTF(sc, ATH_DBG_FATAL,
1210                         "%s: TXQ Update failed\n", __func__);
1211
1212         return ret;
1213 }
1214
1215 static int ath9k_set_key(struct ieee80211_hw *hw,
1216                          enum set_key_cmd cmd,
1217                          const u8 *local_addr,
1218                          const u8 *addr,
1219                          struct ieee80211_key_conf *key)
1220 {
1221         struct ath_softc *sc = hw->priv;
1222         int ret = 0;
1223
1224         DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
1225
1226         switch (cmd) {
1227         case SET_KEY:
1228                 ret = ath_key_config(sc, addr, key);
1229                 if (!ret) {
1230                         set_bit(key->keyidx, sc->sc_keymap);
1231                         key->hw_key_idx = key->keyidx;
1232                         /* push IV and Michael MIC generation to stack */
1233                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1234                         if (key->alg == ALG_TKIP)
1235                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1236                 }
1237                 break;
1238         case DISABLE_KEY:
1239                 ath_key_delete(sc, key);
1240                 clear_bit(key->keyidx, sc->sc_keymap);
1241                 break;
1242         default:
1243                 ret = -EINVAL;
1244         }
1245
1246         return ret;
1247 }
1248
1249 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1250                                    struct ieee80211_vif *vif,
1251                                    struct ieee80211_bss_conf *bss_conf,
1252                                    u32 changed)
1253 {
1254         struct ath_softc *sc = hw->priv;
1255
1256         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1257                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
1258                         __func__,
1259                         bss_conf->use_short_preamble);
1260                 if (bss_conf->use_short_preamble)
1261                         sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1262                 else
1263                         sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1264         }
1265
1266         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1267                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
1268                         __func__,
1269                         bss_conf->use_cts_prot);
1270                 if (bss_conf->use_cts_prot &&
1271                     hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1272                         sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1273                 else
1274                         sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1275         }
1276
1277         if (changed & BSS_CHANGED_HT) {
1278                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT\n",
1279                         __func__);
1280                 ath9k_ht_conf(sc, bss_conf);
1281         }
1282
1283         if (changed & BSS_CHANGED_ASSOC) {
1284                 DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
1285                         __func__,
1286                         bss_conf->assoc);
1287                 ath9k_bss_assoc_info(sc, vif, bss_conf);
1288         }
1289 }
1290
1291 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1292 {
1293         u64 tsf;
1294         struct ath_softc *sc = hw->priv;
1295         struct ath_hal *ah = sc->sc_ah;
1296
1297         tsf = ath9k_hw_gettsf64(ah);
1298
1299         return tsf;
1300 }
1301
1302 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1303 {
1304         struct ath_softc *sc = hw->priv;
1305         struct ath_hal *ah = sc->sc_ah;
1306
1307         ath9k_hw_reset_tsf(ah);
1308 }
1309
1310 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1311                        enum ieee80211_ampdu_mlme_action action,
1312                        struct ieee80211_sta *sta,
1313                        u16 tid, u16 *ssn)
1314 {
1315         struct ath_softc *sc = hw->priv;
1316         int ret = 0;
1317
1318         switch (action) {
1319         case IEEE80211_AMPDU_RX_START:
1320                 if (!(sc->sc_flags & SC_OP_RXAGGR))
1321                         ret = -ENOTSUPP;
1322                 break;
1323         case IEEE80211_AMPDU_RX_STOP:
1324                 break;
1325         case IEEE80211_AMPDU_TX_START:
1326                 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1327                 if (ret < 0)
1328                         DPRINTF(sc, ATH_DBG_FATAL,
1329                                 "%s: Unable to start TX aggregation\n",
1330                                 __func__);
1331                 else
1332                         ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1333                 break;
1334         case IEEE80211_AMPDU_TX_STOP:
1335                 ret = ath_tx_aggr_stop(sc, sta, tid);
1336                 if (ret < 0)
1337                         DPRINTF(sc, ATH_DBG_FATAL,
1338                                 "%s: Unable to stop TX aggregation\n",
1339                                 __func__);
1340
1341                 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
1342                 break;
1343         case IEEE80211_AMPDU_TX_RESUME:
1344                 ath_tx_aggr_resume(sc, sta, tid);
1345                 break;
1346         default:
1347                 DPRINTF(sc, ATH_DBG_FATAL,
1348                         "%s: Unknown AMPDU action\n", __func__);
1349         }
1350
1351         return ret;
1352 }
1353
1354 static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value)
1355 {
1356         return -EOPNOTSUPP;
1357 }
1358
1359 static struct ieee80211_ops ath9k_ops = {
1360         .tx                 = ath9k_tx,
1361         .start              = ath9k_start,
1362         .stop               = ath9k_stop,
1363         .add_interface      = ath9k_add_interface,
1364         .remove_interface   = ath9k_remove_interface,
1365         .config             = ath9k_config,
1366         .config_interface   = ath9k_config_interface,
1367         .configure_filter   = ath9k_configure_filter,
1368         .sta_notify         = ath9k_sta_notify,
1369         .conf_tx            = ath9k_conf_tx,
1370         .bss_info_changed   = ath9k_bss_info_changed,
1371         .set_key            = ath9k_set_key,
1372         .get_tsf            = ath9k_get_tsf,
1373         .reset_tsf          = ath9k_reset_tsf,
1374         .ampdu_action       = ath9k_ampdu_action,
1375         .set_frag_threshold = ath9k_no_fragmentation,
1376 };
1377
1378 static struct {
1379         u32 version;
1380         const char * name;
1381 } ath_mac_bb_names[] = {
1382         { AR_SREV_VERSION_5416_PCI,     "5416" },
1383         { AR_SREV_VERSION_5416_PCIE,    "5418" },
1384         { AR_SREV_VERSION_9100,         "9100" },
1385         { AR_SREV_VERSION_9160,         "9160" },
1386         { AR_SREV_VERSION_9280,         "9280" },
1387         { AR_SREV_VERSION_9285,         "9285" }
1388 };
1389
1390 static struct {
1391         u16 version;
1392         const char * name;
1393 } ath_rf_names[] = {
1394         { 0,                            "5133" },
1395         { AR_RAD5133_SREV_MAJOR,        "5133" },
1396         { AR_RAD5122_SREV_MAJOR,        "5122" },
1397         { AR_RAD2133_SREV_MAJOR,        "2133" },
1398         { AR_RAD2122_SREV_MAJOR,        "2122" }
1399 };
1400
1401 /*
1402  * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
1403  */
1404
1405 static const char *
1406 ath_mac_bb_name(u32 mac_bb_version)
1407 {
1408         int i;
1409
1410         for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
1411                 if (ath_mac_bb_names[i].version == mac_bb_version) {
1412                         return ath_mac_bb_names[i].name;
1413                 }
1414         }
1415
1416         return "????";
1417 }
1418
1419 /*
1420  * Return the RF name. "????" is returned if the RF is unknown.
1421  */
1422
1423 static const char *
1424 ath_rf_name(u16 rf_version)
1425 {
1426         int i;
1427
1428         for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
1429                 if (ath_rf_names[i].version == rf_version) {
1430                         return ath_rf_names[i].name;
1431                 }
1432         }
1433
1434         return "????";
1435 }
1436
1437 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1438 {
1439         void __iomem *mem;
1440         struct ath_softc *sc;
1441         struct ieee80211_hw *hw;
1442         u8 csz;
1443         u32 val;
1444         int ret = 0;
1445         struct ath_hal *ah;
1446
1447         if (pci_enable_device(pdev))
1448                 return -EIO;
1449
1450         ret =  pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1451
1452         if (ret) {
1453                 printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
1454                 goto bad;
1455         }
1456
1457         ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1458
1459         if (ret) {
1460                 printk(KERN_ERR "ath9k: 32-bit DMA consistent "
1461                         "DMA enable faled\n");
1462                 goto bad;
1463         }
1464
1465         /*
1466          * Cache line size is used to size and align various
1467          * structures used to communicate with the hardware.
1468          */
1469         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
1470         if (csz == 0) {
1471                 /*
1472                  * Linux 2.4.18 (at least) writes the cache line size
1473                  * register as a 16-bit wide register which is wrong.
1474                  * We must have this setup properly for rx buffer
1475                  * DMA to work so force a reasonable value here if it
1476                  * comes up zero.
1477                  */
1478                 csz = L1_CACHE_BYTES / sizeof(u32);
1479                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
1480         }
1481         /*
1482          * The default setting of latency timer yields poor results,
1483          * set it to the value used by other systems. It may be worth
1484          * tweaking this setting more.
1485          */
1486         pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
1487
1488         pci_set_master(pdev);
1489
1490         /*
1491          * Disable the RETRY_TIMEOUT register (0x41) to keep
1492          * PCI Tx retries from interfering with C3 CPU state.
1493          */
1494         pci_read_config_dword(pdev, 0x40, &val);
1495         if ((val & 0x0000ff00) != 0)
1496                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1497
1498         ret = pci_request_region(pdev, 0, "ath9k");
1499         if (ret) {
1500                 dev_err(&pdev->dev, "PCI memory region reserve error\n");
1501                 ret = -ENODEV;
1502                 goto bad;
1503         }
1504
1505         mem = pci_iomap(pdev, 0, 0);
1506         if (!mem) {
1507                 printk(KERN_ERR "PCI memory map error\n") ;
1508                 ret = -EIO;
1509                 goto bad1;
1510         }
1511
1512         hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
1513         if (hw == NULL) {
1514                 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
1515                 goto bad2;
1516         }
1517
1518         SET_IEEE80211_DEV(hw, &pdev->dev);
1519         pci_set_drvdata(pdev, hw);
1520
1521         sc = hw->priv;
1522         sc->hw = hw;
1523         sc->pdev = pdev;
1524         sc->mem = mem;
1525
1526         if (ath_attach(id->device, sc) != 0) {
1527                 ret = -ENODEV;
1528                 goto bad3;
1529         }
1530
1531         /* setup interrupt service routine */
1532
1533         if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
1534                 printk(KERN_ERR "%s: request_irq failed\n",
1535                         wiphy_name(hw->wiphy));
1536                 ret = -EIO;
1537                 goto bad4;
1538         }
1539
1540         ah = sc->sc_ah;
1541         printk(KERN_INFO
1542                "%s: Atheros AR%s MAC/BB Rev:%x "
1543                "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
1544                wiphy_name(hw->wiphy),
1545                ath_mac_bb_name(ah->ah_macVersion),
1546                ah->ah_macRev,
1547                ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
1548                ah->ah_phyRev,
1549                (unsigned long)mem, pdev->irq);
1550
1551         return 0;
1552 bad4:
1553         ath_detach(sc);
1554 bad3:
1555         ieee80211_free_hw(hw);
1556 bad2:
1557         pci_iounmap(pdev, mem);
1558 bad1:
1559         pci_release_region(pdev, 0);
1560 bad:
1561         pci_disable_device(pdev);
1562         return ret;
1563 }
1564
1565 static void ath_pci_remove(struct pci_dev *pdev)
1566 {
1567         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1568         struct ath_softc *sc = hw->priv;
1569
1570         ath_detach(sc);
1571         if (pdev->irq)
1572                 free_irq(pdev->irq, sc);
1573         pci_iounmap(pdev, sc->mem);
1574         pci_release_region(pdev, 0);
1575         pci_disable_device(pdev);
1576         ieee80211_free_hw(hw);
1577 }
1578
1579 #ifdef CONFIG_PM
1580
1581 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1582 {
1583         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1584         struct ath_softc *sc = hw->priv;
1585
1586         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1587
1588 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1589         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1590                 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1591 #endif
1592
1593         pci_save_state(pdev);
1594         pci_disable_device(pdev);
1595         pci_set_power_state(pdev, 3);
1596
1597         return 0;
1598 }
1599
1600 static int ath_pci_resume(struct pci_dev *pdev)
1601 {
1602         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
1603         struct ath_softc *sc = hw->priv;
1604         u32 val;
1605         int err;
1606
1607         err = pci_enable_device(pdev);
1608         if (err)
1609                 return err;
1610         pci_restore_state(pdev);
1611         /*
1612          * Suspend/Resume resets the PCI configuration space, so we have to
1613          * re-disable the RETRY_TIMEOUT register (0x41) to keep
1614          * PCI Tx retries from interfering with C3 CPU state
1615          */
1616         pci_read_config_dword(pdev, 0x40, &val);
1617         if ((val & 0x0000ff00) != 0)
1618                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1619
1620         /* Enable LED */
1621         ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1622                             AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1623         ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1624
1625 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1626         /*
1627          * check the h/w rfkill state on resume
1628          * and start the rfkill poll timer
1629          */
1630         if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1631                 queue_delayed_work(sc->hw->workqueue,
1632                                    &sc->rf_kill.rfkill_poll, 0);
1633 #endif
1634
1635         return 0;
1636 }
1637
1638 #endif /* CONFIG_PM */
1639
1640 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
1641
1642 static struct pci_driver ath_pci_driver = {
1643         .name       = "ath9k",
1644         .id_table   = ath_pci_id_table,
1645         .probe      = ath_pci_probe,
1646         .remove     = ath_pci_remove,
1647 #ifdef CONFIG_PM
1648         .suspend    = ath_pci_suspend,
1649         .resume     = ath_pci_resume,
1650 #endif /* CONFIG_PM */
1651 };
1652
1653 static int __init init_ath_pci(void)
1654 {
1655         printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
1656
1657         if (pci_register_driver(&ath_pci_driver) < 0) {
1658                 printk(KERN_ERR
1659                         "ath_pci: No devices found, driver not installed.\n");
1660                 pci_unregister_driver(&ath_pci_driver);
1661                 return -ENODEV;
1662         }
1663
1664         return 0;
1665 }
1666 module_init(init_ath_pci);
1667
1668 static void __exit exit_ath_pci(void)
1669 {
1670         pci_unregister_driver(&ath_pci_driver);
1671         printk(KERN_INFO "%s: driver unloaded\n", dev_info);
1672 }
1673 module_exit(exit_ath_pci);