Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 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 |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 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; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 143 | enum nl80211_iftype opmode; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 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) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 182 | case NL80211_IFTYPE_STATION: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 183 | /* default key: could be group WPA key |
| 184 | * or could be static WEP key */ |
| 185 | mac = NULL; |
| 186 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 187 | case NL80211_IFTYPE_ADHOC: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 188 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 189 | case NL80211_IFTYPE_AP: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 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 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key) |
| 211 | { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 212 | int freeslot; |
| 213 | |
Sujith | ff9b662 | 2008-08-14 13:27:16 +0530 | [diff] [blame] | 214 | freeslot = (key->keyidx >= 4) ? 1 : 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 215 | ath_key_reset(sc, key->keyidx, freeslot); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | static void setup_ht_cap(struct ieee80211_ht_info *ht_info) |
| 219 | { |
Sujith | 6065367 | 2008-08-14 13:28:02 +0530 | [diff] [blame] | 220 | #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */ |
| 221 | #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 222 | |
| 223 | ht_info->ht_supported = 1; |
| 224 | ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 225 | |(u16)IEEE80211_HT_CAP_SM_PS |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 226 | |(u16)IEEE80211_HT_CAP_SGI_40 |
| 227 | |(u16)IEEE80211_HT_CAP_DSSSCCK40; |
| 228 | |
Sujith | 6065367 | 2008-08-14 13:28:02 +0530 | [diff] [blame] | 229 | ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536; |
| 230 | ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 231 | /* setup supported mcs set */ |
| 232 | memset(ht_info->supp_mcs_set, 0, 16); |
| 233 | ht_info->supp_mcs_set[0] = 0xff; |
| 234 | ht_info->supp_mcs_set[1] = 0xff; |
| 235 | ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED; |
| 236 | } |
| 237 | |
| 238 | static int ath_rate2idx(struct ath_softc *sc, int rate) |
| 239 | { |
| 240 | int i = 0, cur_band, n_rates; |
| 241 | struct ieee80211_hw *hw = sc->hw; |
| 242 | |
| 243 | cur_band = hw->conf.channel->band; |
| 244 | n_rates = sc->sbands[cur_band].n_bitrates; |
| 245 | |
| 246 | for (i = 0; i < n_rates; i++) { |
| 247 | if (sc->sbands[cur_band].bitrates[i].bitrate == rate) |
| 248 | break; |
| 249 | } |
| 250 | |
| 251 | /* |
| 252 | * NB:mac80211 validates rx rate index against the supported legacy rate |
| 253 | * index only (should be done against ht rates also), return the highest |
| 254 | * legacy rate index for rx rate which does not match any one of the |
| 255 | * supported basic and extended rates to make mac80211 happy. |
| 256 | * The following hack will be cleaned up once the issue with |
| 257 | * the rx rate index validation in mac80211 is fixed. |
| 258 | */ |
| 259 | if (i == n_rates) |
| 260 | return n_rates - 1; |
| 261 | return i; |
| 262 | } |
| 263 | |
| 264 | static void ath9k_rx_prepare(struct ath_softc *sc, |
| 265 | struct sk_buff *skb, |
| 266 | struct ath_recv_status *status, |
| 267 | struct ieee80211_rx_status *rx_status) |
| 268 | { |
| 269 | struct ieee80211_hw *hw = sc->hw; |
| 270 | struct ieee80211_channel *curchan = hw->conf.channel; |
| 271 | |
| 272 | memset(rx_status, 0, sizeof(struct ieee80211_rx_status)); |
| 273 | |
| 274 | rx_status->mactime = status->tsf; |
| 275 | rx_status->band = curchan->band; |
| 276 | rx_status->freq = curchan->center_freq; |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 277 | rx_status->noise = sc->sc_ani.sc_noise_floor; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 278 | rx_status->signal = rx_status->noise + status->rssi; |
| 279 | rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100)); |
| 280 | rx_status->antenna = status->antenna; |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 281 | |
| 282 | /* XXX Fix me, 64 cannot be the max rssi value, rigure it out */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 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 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 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; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 365 | |
| 366 | if (bss_conf->assoc) { |
| 367 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n", |
| 368 | __func__, |
| 369 | bss_conf->aid); |
| 370 | |
| 371 | avp = sc->sc_vaps[0]; |
| 372 | if (avp == NULL) { |
| 373 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n", |
| 374 | __func__); |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | /* New association, store aid */ |
| 379 | if (avp->av_opmode == ATH9K_M_STA) { |
| 380 | sc->sc_curaid = bss_conf->aid; |
| 381 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, |
| 382 | sc->sc_curaid); |
| 383 | } |
| 384 | |
| 385 | /* Configure the beacon */ |
| 386 | ath_beacon_config(sc, 0); |
| 387 | sc->sc_flags |= SC_OP_BEACONS; |
| 388 | |
| 389 | /* Reset rssi stats */ |
| 390 | sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER; |
| 391 | sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER; |
| 392 | sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER; |
| 393 | sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER; |
| 394 | |
| 395 | /* Update chainmask */ |
| 396 | ath_update_chainmask(sc, bss_conf->assoc_ht); |
| 397 | |
| 398 | DPRINTF(sc, ATH_DBG_CONFIG, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 399 | "%s: bssid %pM aid 0x%x\n", |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 400 | __func__, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 401 | sc->sc_curbssid, sc->sc_curaid); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 402 | |
| 403 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n", |
| 404 | __func__, |
| 405 | curchan->center_freq); |
| 406 | |
| 407 | pos = ath_get_channel(sc, curchan); |
| 408 | if (pos == -1) { |
| 409 | DPRINTF(sc, ATH_DBG_FATAL, |
| 410 | "%s: Invalid channel\n", __func__); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | if (hw->conf.ht_conf.ht_supported) |
| 415 | sc->sc_ah->ah_channels[pos].chanmode = |
| 416 | ath_get_extchanmode(sc, curchan); |
| 417 | else |
| 418 | sc->sc_ah->ah_channels[pos].chanmode = |
| 419 | (curchan->band == IEEE80211_BAND_2GHZ) ? |
| 420 | CHANNEL_G : CHANNEL_A; |
| 421 | |
| 422 | /* set h/w channel */ |
| 423 | if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) |
| 424 | DPRINTF(sc, ATH_DBG_FATAL, |
| 425 | "%s: Unable to set channel\n", |
| 426 | __func__); |
| 427 | |
| 428 | ath_rate_newstate(sc, avp); |
| 429 | /* Update ratectrl about the new state */ |
| 430 | ath_rc_node_update(hw, avp->rc_node); |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 431 | |
| 432 | /* Start ANI */ |
| 433 | mod_timer(&sc->sc_ani.timer, |
| 434 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
| 435 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 436 | } else { |
| 437 | DPRINTF(sc, ATH_DBG_CONFIG, |
| 438 | "%s: Bss Info DISSOC\n", __func__); |
| 439 | sc->sc_curaid = 0; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | void ath_get_beaconconfig(struct ath_softc *sc, |
| 444 | int if_id, |
| 445 | struct ath_beacon_config *conf) |
| 446 | { |
| 447 | struct ieee80211_hw *hw = sc->hw; |
| 448 | |
| 449 | /* fill in beacon config data */ |
| 450 | |
| 451 | conf->beacon_interval = hw->conf.beacon_int; |
| 452 | conf->listen_interval = 100; |
| 453 | conf->dtim_count = 1; |
| 454 | conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval; |
| 455 | } |
| 456 | |
| 457 | void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, |
| 458 | struct ath_xmit_status *tx_status, struct ath_node *an) |
| 459 | { |
| 460 | struct ieee80211_hw *hw = sc->hw; |
| 461 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
| 462 | |
| 463 | DPRINTF(sc, ATH_DBG_XMIT, |
| 464 | "%s: TX complete: skb: %p\n", __func__, skb); |
| 465 | |
| 466 | if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK || |
| 467 | tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
| 468 | /* free driver's private data area of tx_info */ |
| 469 | if (tx_info->driver_data[0] != NULL) |
| 470 | kfree(tx_info->driver_data[0]); |
| 471 | tx_info->driver_data[0] = NULL; |
| 472 | } |
| 473 | |
| 474 | if (tx_status->flags & ATH_TX_BAR) { |
| 475 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
| 476 | tx_status->flags &= ~ATH_TX_BAR; |
| 477 | } |
| 478 | |
| 479 | if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) { |
| 480 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
| 481 | /* Frame was not ACKed, but an ACK was expected */ |
| 482 | tx_info->status.excessive_retries = 1; |
| 483 | } |
| 484 | } else { |
| 485 | /* Frame was ACKed */ |
| 486 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
| 487 | } |
| 488 | |
| 489 | tx_info->status.retry_count = tx_status->retries; |
| 490 | |
| 491 | ieee80211_tx_status(hw, skb); |
| 492 | if (an) |
| 493 | ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE); |
| 494 | } |
| 495 | |
| 496 | int _ath_rx_indicate(struct ath_softc *sc, |
| 497 | struct sk_buff *skb, |
| 498 | struct ath_recv_status *status, |
| 499 | u16 keyix) |
| 500 | { |
| 501 | struct ieee80211_hw *hw = sc->hw; |
| 502 | struct ath_node *an = NULL; |
| 503 | struct ieee80211_rx_status rx_status; |
| 504 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 505 | int hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
| 506 | int padsize; |
| 507 | enum ATH_RX_TYPE st; |
| 508 | |
| 509 | /* see if any padding is done by the hw and remove it */ |
| 510 | if (hdrlen & 3) { |
| 511 | padsize = hdrlen % 4; |
| 512 | memmove(skb->data + padsize, skb->data, hdrlen); |
| 513 | skb_pull(skb, padsize); |
| 514 | } |
| 515 | |
| 516 | /* Prepare rx status */ |
| 517 | ath9k_rx_prepare(sc, skb, status, &rx_status); |
| 518 | |
| 519 | if (!(keyix == ATH9K_RXKEYIX_INVALID) && |
| 520 | !(status->flags & ATH_RX_DECRYPT_ERROR)) { |
| 521 | rx_status.flag |= RX_FLAG_DECRYPTED; |
| 522 | } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED) |
| 523 | && !(status->flags & ATH_RX_DECRYPT_ERROR) |
| 524 | && skb->len >= hdrlen + 4) { |
| 525 | keyix = skb->data[hdrlen + 3] >> 6; |
| 526 | |
| 527 | if (test_bit(keyix, sc->sc_keymap)) |
| 528 | rx_status.flag |= RX_FLAG_DECRYPTED; |
| 529 | } |
| 530 | |
| 531 | spin_lock_bh(&sc->node_lock); |
| 532 | an = ath_node_find(sc, hdr->addr2); |
| 533 | spin_unlock_bh(&sc->node_lock); |
| 534 | |
| 535 | if (an) { |
| 536 | ath_rx_input(sc, an, |
| 537 | hw->conf.ht_conf.ht_supported, |
| 538 | skb, status, &st); |
| 539 | } |
| 540 | if (!an || (st != ATH_RX_CONSUMED)) |
| 541 | __ieee80211_rx(hw, skb, &rx_status); |
| 542 | |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | int ath_rx_subframe(struct ath_node *an, |
| 547 | struct sk_buff *skb, |
| 548 | struct ath_recv_status *status) |
| 549 | { |
| 550 | struct ath_softc *sc = an->an_sc; |
| 551 | struct ieee80211_hw *hw = sc->hw; |
| 552 | struct ieee80211_rx_status rx_status; |
| 553 | |
| 554 | /* Prepare rx status */ |
| 555 | ath9k_rx_prepare(sc, skb, status, &rx_status); |
| 556 | if (!(status->flags & ATH_RX_DECRYPT_ERROR)) |
| 557 | rx_status.flag |= RX_FLAG_DECRYPTED; |
| 558 | |
| 559 | __ieee80211_rx(hw, skb, &rx_status); |
| 560 | |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | /********************************/ |
| 565 | /* LED functions */ |
| 566 | /********************************/ |
| 567 | |
| 568 | static void ath_led_brightness(struct led_classdev *led_cdev, |
| 569 | enum led_brightness brightness) |
| 570 | { |
| 571 | struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); |
| 572 | struct ath_softc *sc = led->sc; |
| 573 | |
| 574 | switch (brightness) { |
| 575 | case LED_OFF: |
| 576 | if (led->led_type == ATH_LED_ASSOC || |
| 577 | led->led_type == ATH_LED_RADIO) |
| 578 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; |
| 579 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, |
| 580 | (led->led_type == ATH_LED_RADIO) ? 1 : |
| 581 | !!(sc->sc_flags & SC_OP_LED_ASSOCIATED)); |
| 582 | break; |
| 583 | case LED_FULL: |
| 584 | if (led->led_type == ATH_LED_ASSOC) |
| 585 | sc->sc_flags |= SC_OP_LED_ASSOCIATED; |
| 586 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0); |
| 587 | break; |
| 588 | default: |
| 589 | break; |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | static int ath_register_led(struct ath_softc *sc, struct ath_led *led, |
| 594 | char *trigger) |
| 595 | { |
| 596 | int ret; |
| 597 | |
| 598 | led->sc = sc; |
| 599 | led->led_cdev.name = led->name; |
| 600 | led->led_cdev.default_trigger = trigger; |
| 601 | led->led_cdev.brightness_set = ath_led_brightness; |
| 602 | |
| 603 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); |
| 604 | if (ret) |
| 605 | DPRINTF(sc, ATH_DBG_FATAL, |
| 606 | "Failed to register led:%s", led->name); |
| 607 | else |
| 608 | led->registered = 1; |
| 609 | return ret; |
| 610 | } |
| 611 | |
| 612 | static void ath_unregister_led(struct ath_led *led) |
| 613 | { |
| 614 | if (led->registered) { |
| 615 | led_classdev_unregister(&led->led_cdev); |
| 616 | led->registered = 0; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | static void ath_deinit_leds(struct ath_softc *sc) |
| 621 | { |
| 622 | ath_unregister_led(&sc->assoc_led); |
| 623 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; |
| 624 | ath_unregister_led(&sc->tx_led); |
| 625 | ath_unregister_led(&sc->rx_led); |
| 626 | ath_unregister_led(&sc->radio_led); |
| 627 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
| 628 | } |
| 629 | |
| 630 | static void ath_init_leds(struct ath_softc *sc) |
| 631 | { |
| 632 | char *trigger; |
| 633 | int ret; |
| 634 | |
| 635 | /* Configure gpio 1 for output */ |
| 636 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, |
| 637 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 638 | /* LED off, active low */ |
| 639 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
| 640 | |
| 641 | trigger = ieee80211_get_radio_led_name(sc->hw); |
| 642 | snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), |
| 643 | "ath9k-%s:radio", wiphy_name(sc->hw->wiphy)); |
| 644 | ret = ath_register_led(sc, &sc->radio_led, trigger); |
| 645 | sc->radio_led.led_type = ATH_LED_RADIO; |
| 646 | if (ret) |
| 647 | goto fail; |
| 648 | |
| 649 | trigger = ieee80211_get_assoc_led_name(sc->hw); |
| 650 | snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), |
| 651 | "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy)); |
| 652 | ret = ath_register_led(sc, &sc->assoc_led, trigger); |
| 653 | sc->assoc_led.led_type = ATH_LED_ASSOC; |
| 654 | if (ret) |
| 655 | goto fail; |
| 656 | |
| 657 | trigger = ieee80211_get_tx_led_name(sc->hw); |
| 658 | snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), |
| 659 | "ath9k-%s:tx", wiphy_name(sc->hw->wiphy)); |
| 660 | ret = ath_register_led(sc, &sc->tx_led, trigger); |
| 661 | sc->tx_led.led_type = ATH_LED_TX; |
| 662 | if (ret) |
| 663 | goto fail; |
| 664 | |
| 665 | trigger = ieee80211_get_rx_led_name(sc->hw); |
| 666 | snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), |
| 667 | "ath9k-%s:rx", wiphy_name(sc->hw->wiphy)); |
| 668 | ret = ath_register_led(sc, &sc->rx_led, trigger); |
| 669 | sc->rx_led.led_type = ATH_LED_RX; |
| 670 | if (ret) |
| 671 | goto fail; |
| 672 | |
| 673 | return; |
| 674 | |
| 675 | fail: |
| 676 | ath_deinit_leds(sc); |
| 677 | } |
| 678 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 679 | #ifdef CONFIG_RFKILL |
| 680 | /*******************/ |
| 681 | /* Rfkill */ |
| 682 | /*******************/ |
| 683 | |
| 684 | static void ath_radio_enable(struct ath_softc *sc) |
| 685 | { |
| 686 | struct ath_hal *ah = sc->sc_ah; |
| 687 | int status; |
| 688 | |
| 689 | spin_lock_bh(&sc->sc_resetlock); |
| 690 | if (!ath9k_hw_reset(ah, ah->ah_curchan, |
| 691 | sc->sc_ht_info.tx_chan_width, |
| 692 | sc->sc_tx_chainmask, |
| 693 | sc->sc_rx_chainmask, |
| 694 | sc->sc_ht_extprotspacing, |
| 695 | false, &status)) { |
| 696 | DPRINTF(sc, ATH_DBG_FATAL, |
| 697 | "%s: unable to reset channel %u (%uMhz) " |
| 698 | "flags 0x%x hal status %u\n", __func__, |
| 699 | ath9k_hw_mhz2ieee(ah, |
| 700 | ah->ah_curchan->channel, |
| 701 | ah->ah_curchan->channelFlags), |
| 702 | ah->ah_curchan->channel, |
| 703 | ah->ah_curchan->channelFlags, status); |
| 704 | } |
| 705 | spin_unlock_bh(&sc->sc_resetlock); |
| 706 | |
| 707 | ath_update_txpow(sc); |
| 708 | if (ath_startrecv(sc) != 0) { |
| 709 | DPRINTF(sc, ATH_DBG_FATAL, |
| 710 | "%s: unable to restart recv logic\n", __func__); |
| 711 | return; |
| 712 | } |
| 713 | |
| 714 | if (sc->sc_flags & SC_OP_BEACONS) |
| 715 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ |
| 716 | |
| 717 | /* Re-Enable interrupts */ |
| 718 | ath9k_hw_set_interrupts(ah, sc->sc_imask); |
| 719 | |
| 720 | /* Enable LED */ |
| 721 | ath9k_hw_cfg_output(ah, ATH_LED_PIN, |
| 722 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 723 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0); |
| 724 | |
| 725 | ieee80211_wake_queues(sc->hw); |
| 726 | } |
| 727 | |
| 728 | static void ath_radio_disable(struct ath_softc *sc) |
| 729 | { |
| 730 | struct ath_hal *ah = sc->sc_ah; |
| 731 | int status; |
| 732 | |
| 733 | |
| 734 | ieee80211_stop_queues(sc->hw); |
| 735 | |
| 736 | /* Disable LED */ |
| 737 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1); |
| 738 | ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN); |
| 739 | |
| 740 | /* Disable interrupts */ |
| 741 | ath9k_hw_set_interrupts(ah, 0); |
| 742 | |
| 743 | ath_draintxq(sc, false); /* clear pending tx frames */ |
| 744 | ath_stoprecv(sc); /* turn off frame recv */ |
| 745 | ath_flushrecv(sc); /* flush recv queue */ |
| 746 | |
| 747 | spin_lock_bh(&sc->sc_resetlock); |
| 748 | if (!ath9k_hw_reset(ah, ah->ah_curchan, |
| 749 | sc->sc_ht_info.tx_chan_width, |
| 750 | sc->sc_tx_chainmask, |
| 751 | sc->sc_rx_chainmask, |
| 752 | sc->sc_ht_extprotspacing, |
| 753 | false, &status)) { |
| 754 | DPRINTF(sc, ATH_DBG_FATAL, |
| 755 | "%s: unable to reset channel %u (%uMhz) " |
| 756 | "flags 0x%x hal status %u\n", __func__, |
| 757 | ath9k_hw_mhz2ieee(ah, |
| 758 | ah->ah_curchan->channel, |
| 759 | ah->ah_curchan->channelFlags), |
| 760 | ah->ah_curchan->channel, |
| 761 | ah->ah_curchan->channelFlags, status); |
| 762 | } |
| 763 | spin_unlock_bh(&sc->sc_resetlock); |
| 764 | |
| 765 | ath9k_hw_phy_disable(ah); |
| 766 | ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP); |
| 767 | } |
| 768 | |
| 769 | static bool ath_is_rfkill_set(struct ath_softc *sc) |
| 770 | { |
| 771 | struct ath_hal *ah = sc->sc_ah; |
| 772 | |
| 773 | return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) == |
| 774 | ah->ah_rfkill_polarity; |
| 775 | } |
| 776 | |
| 777 | /* h/w rfkill poll function */ |
| 778 | static void ath_rfkill_poll(struct work_struct *work) |
| 779 | { |
| 780 | struct ath_softc *sc = container_of(work, struct ath_softc, |
| 781 | rf_kill.rfkill_poll.work); |
| 782 | bool radio_on; |
| 783 | |
| 784 | if (sc->sc_flags & SC_OP_INVALID) |
| 785 | return; |
| 786 | |
| 787 | radio_on = !ath_is_rfkill_set(sc); |
| 788 | |
| 789 | /* |
| 790 | * enable/disable radio only when there is a |
| 791 | * state change in RF switch |
| 792 | */ |
| 793 | if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) { |
| 794 | enum rfkill_state state; |
| 795 | |
| 796 | if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) { |
| 797 | state = radio_on ? RFKILL_STATE_SOFT_BLOCKED |
| 798 | : RFKILL_STATE_HARD_BLOCKED; |
| 799 | } else if (radio_on) { |
| 800 | ath_radio_enable(sc); |
| 801 | state = RFKILL_STATE_UNBLOCKED; |
| 802 | } else { |
| 803 | ath_radio_disable(sc); |
| 804 | state = RFKILL_STATE_HARD_BLOCKED; |
| 805 | } |
| 806 | |
| 807 | if (state == RFKILL_STATE_HARD_BLOCKED) |
| 808 | sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED; |
| 809 | else |
| 810 | sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED; |
| 811 | |
| 812 | rfkill_force_state(sc->rf_kill.rfkill, state); |
| 813 | } |
| 814 | |
| 815 | queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll, |
| 816 | msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL)); |
| 817 | } |
| 818 | |
| 819 | /* s/w rfkill handler */ |
| 820 | static int ath_sw_toggle_radio(void *data, enum rfkill_state state) |
| 821 | { |
| 822 | struct ath_softc *sc = data; |
| 823 | |
| 824 | switch (state) { |
| 825 | case RFKILL_STATE_SOFT_BLOCKED: |
| 826 | if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED | |
| 827 | SC_OP_RFKILL_SW_BLOCKED))) |
| 828 | ath_radio_disable(sc); |
| 829 | sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED; |
| 830 | return 0; |
| 831 | case RFKILL_STATE_UNBLOCKED: |
| 832 | if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) { |
| 833 | sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED; |
| 834 | if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) { |
| 835 | DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the" |
| 836 | "radio as it is disabled by h/w \n"); |
| 837 | return -EPERM; |
| 838 | } |
| 839 | ath_radio_enable(sc); |
| 840 | } |
| 841 | return 0; |
| 842 | default: |
| 843 | return -EINVAL; |
| 844 | } |
| 845 | } |
| 846 | |
| 847 | /* Init s/w rfkill */ |
| 848 | static int ath_init_sw_rfkill(struct ath_softc *sc) |
| 849 | { |
| 850 | sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy), |
| 851 | RFKILL_TYPE_WLAN); |
| 852 | if (!sc->rf_kill.rfkill) { |
| 853 | DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n"); |
| 854 | return -ENOMEM; |
| 855 | } |
| 856 | |
| 857 | snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), |
| 858 | "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy)); |
| 859 | sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name; |
| 860 | sc->rf_kill.rfkill->data = sc; |
| 861 | sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; |
| 862 | sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; |
| 863 | sc->rf_kill.rfkill->user_claim_unsupported = 1; |
| 864 | |
| 865 | return 0; |
| 866 | } |
| 867 | |
| 868 | /* Deinitialize rfkill */ |
| 869 | static void ath_deinit_rfkill(struct ath_softc *sc) |
| 870 | { |
| 871 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 872 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
| 873 | |
| 874 | if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) { |
| 875 | rfkill_unregister(sc->rf_kill.rfkill); |
| 876 | sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED; |
| 877 | sc->rf_kill.rfkill = NULL; |
| 878 | } |
| 879 | } |
| 880 | #endif /* CONFIG_RFKILL */ |
| 881 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 882 | static int ath_detach(struct ath_softc *sc) |
| 883 | { |
| 884 | struct ieee80211_hw *hw = sc->hw; |
| 885 | |
| 886 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__); |
| 887 | |
| 888 | /* Deinit LED control */ |
| 889 | ath_deinit_leds(sc); |
| 890 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 891 | #ifdef CONFIG_RFKILL |
| 892 | /* deinit rfkill */ |
| 893 | ath_deinit_rfkill(sc); |
| 894 | #endif |
| 895 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 896 | /* Unregister hw */ |
| 897 | |
| 898 | ieee80211_unregister_hw(hw); |
| 899 | |
| 900 | /* unregister Rate control */ |
| 901 | ath_rate_control_unregister(); |
| 902 | |
| 903 | /* tx/rx cleanup */ |
| 904 | |
| 905 | ath_rx_cleanup(sc); |
| 906 | ath_tx_cleanup(sc); |
| 907 | |
| 908 | /* Deinit */ |
| 909 | |
| 910 | ath_deinit(sc); |
| 911 | |
| 912 | return 0; |
| 913 | } |
| 914 | |
| 915 | static int ath_attach(u16 devid, |
| 916 | struct ath_softc *sc) |
| 917 | { |
| 918 | struct ieee80211_hw *hw = sc->hw; |
| 919 | int error = 0; |
| 920 | |
| 921 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__); |
| 922 | |
| 923 | error = ath_init(devid, sc); |
| 924 | if (error != 0) |
| 925 | return error; |
| 926 | |
| 927 | /* Init nodes */ |
| 928 | |
| 929 | INIT_LIST_HEAD(&sc->node_list); |
| 930 | spin_lock_init(&sc->node_lock); |
| 931 | |
| 932 | /* get mac address from hardware and set in mac80211 */ |
| 933 | |
| 934 | SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr); |
| 935 | |
| 936 | /* setup channels and rates */ |
| 937 | |
| 938 | sc->sbands[IEEE80211_BAND_2GHZ].channels = |
| 939 | sc->channels[IEEE80211_BAND_2GHZ]; |
| 940 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = |
| 941 | sc->rates[IEEE80211_BAND_2GHZ]; |
| 942 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; |
| 943 | |
| 944 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) |
| 945 | /* Setup HT capabilities for 2.4Ghz*/ |
| 946 | setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info); |
| 947 | |
| 948 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 949 | &sc->sbands[IEEE80211_BAND_2GHZ]; |
| 950 | |
| 951 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) { |
| 952 | sc->sbands[IEEE80211_BAND_5GHZ].channels = |
| 953 | sc->channels[IEEE80211_BAND_5GHZ]; |
| 954 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = |
| 955 | sc->rates[IEEE80211_BAND_5GHZ]; |
| 956 | sc->sbands[IEEE80211_BAND_5GHZ].band = |
| 957 | IEEE80211_BAND_5GHZ; |
| 958 | |
| 959 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) |
| 960 | /* Setup HT capabilities for 5Ghz*/ |
| 961 | setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info); |
| 962 | |
| 963 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 964 | &sc->sbands[IEEE80211_BAND_5GHZ]; |
| 965 | } |
| 966 | |
| 967 | /* FIXME: Have to figure out proper hw init values later */ |
| 968 | |
| 969 | hw->queues = 4; |
| 970 | hw->ampdu_queues = 1; |
| 971 | |
| 972 | /* Register rate control */ |
| 973 | hw->rate_control_algorithm = "ath9k_rate_control"; |
| 974 | error = ath_rate_control_register(); |
| 975 | if (error != 0) { |
| 976 | DPRINTF(sc, ATH_DBG_FATAL, |
| 977 | "%s: Unable to register rate control " |
| 978 | "algorithm:%d\n", __func__, error); |
| 979 | ath_rate_control_unregister(); |
| 980 | goto bad; |
| 981 | } |
| 982 | |
| 983 | error = ieee80211_register_hw(hw); |
| 984 | if (error != 0) { |
| 985 | ath_rate_control_unregister(); |
| 986 | goto bad; |
| 987 | } |
| 988 | |
| 989 | /* Initialize LED control */ |
| 990 | ath_init_leds(sc); |
| 991 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 992 | #ifdef CONFIG_RFKILL |
| 993 | /* Initialze h/w Rfkill */ |
| 994 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 995 | INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); |
| 996 | |
| 997 | /* Initialize s/w rfkill */ |
| 998 | if (ath_init_sw_rfkill(sc)) |
| 999 | goto detach; |
| 1000 | #endif |
| 1001 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1002 | /* initialize tx/rx engine */ |
| 1003 | |
| 1004 | error = ath_tx_init(sc, ATH_TXBUF); |
| 1005 | if (error != 0) |
| 1006 | goto detach; |
| 1007 | |
| 1008 | error = ath_rx_init(sc, ATH_RXBUF); |
| 1009 | if (error != 0) |
| 1010 | goto detach; |
| 1011 | |
| 1012 | return 0; |
| 1013 | detach: |
| 1014 | ath_detach(sc); |
| 1015 | bad: |
| 1016 | return error; |
| 1017 | } |
| 1018 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1019 | static int ath9k_start(struct ieee80211_hw *hw) |
| 1020 | { |
| 1021 | struct ath_softc *sc = hw->priv; |
| 1022 | struct ieee80211_channel *curchan = hw->conf.channel; |
| 1023 | int error = 0, pos; |
| 1024 | |
| 1025 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with " |
| 1026 | "initial channel: %d MHz\n", __func__, curchan->center_freq); |
| 1027 | |
| 1028 | /* setup initial channel */ |
| 1029 | |
| 1030 | pos = ath_get_channel(sc, curchan); |
| 1031 | if (pos == -1) { |
| 1032 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__); |
| 1033 | return -EINVAL; |
| 1034 | } |
| 1035 | |
| 1036 | sc->sc_ah->ah_channels[pos].chanmode = |
| 1037 | (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A; |
| 1038 | |
| 1039 | /* open ath_dev */ |
| 1040 | error = ath_open(sc, &sc->sc_ah->ah_channels[pos]); |
| 1041 | if (error) { |
| 1042 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1043 | "%s: Unable to complete ath_open\n", __func__); |
| 1044 | return error; |
| 1045 | } |
| 1046 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1047 | #ifdef CONFIG_RFKILL |
| 1048 | /* Start rfkill polling */ |
| 1049 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1050 | queue_delayed_work(sc->hw->workqueue, |
| 1051 | &sc->rf_kill.rfkill_poll, 0); |
| 1052 | |
| 1053 | if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) { |
| 1054 | if (rfkill_register(sc->rf_kill.rfkill)) { |
| 1055 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1056 | "Unable to register rfkill\n"); |
| 1057 | rfkill_free(sc->rf_kill.rfkill); |
| 1058 | |
| 1059 | /* Deinitialize the device */ |
| 1060 | if (sc->pdev->irq) |
| 1061 | free_irq(sc->pdev->irq, sc); |
| 1062 | ath_detach(sc); |
| 1063 | pci_iounmap(sc->pdev, sc->mem); |
| 1064 | pci_release_region(sc->pdev, 0); |
| 1065 | pci_disable_device(sc->pdev); |
| 1066 | ieee80211_free_hw(hw); |
| 1067 | return -EIO; |
| 1068 | } else { |
| 1069 | sc->sc_flags |= SC_OP_RFKILL_REGISTERED; |
| 1070 | } |
| 1071 | } |
| 1072 | #endif |
| 1073 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1074 | ieee80211_wake_queues(hw); |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
| 1078 | static int ath9k_tx(struct ieee80211_hw *hw, |
| 1079 | struct sk_buff *skb) |
| 1080 | { |
| 1081 | struct ath_softc *sc = hw->priv; |
| 1082 | int hdrlen, padsize; |
Jouni Malinen | 147583c | 2008-08-11 14:01:50 +0300 | [diff] [blame] | 1083 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 1084 | |
| 1085 | /* |
| 1086 | * As a temporary workaround, assign seq# here; this will likely need |
| 1087 | * to be cleaned up to work better with Beacon transmission and virtual |
| 1088 | * BSSes. |
| 1089 | */ |
| 1090 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { |
| 1091 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 1092 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
| 1093 | sc->seq_no += 0x10; |
| 1094 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
| 1095 | hdr->seq_ctrl |= cpu_to_le16(sc->seq_no); |
| 1096 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1097 | |
| 1098 | /* Add the padding after the header if this is not already done */ |
| 1099 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
| 1100 | if (hdrlen & 3) { |
| 1101 | padsize = hdrlen % 4; |
| 1102 | if (skb_headroom(skb) < padsize) |
| 1103 | return -1; |
| 1104 | skb_push(skb, padsize); |
| 1105 | memmove(skb->data, skb->data + padsize, hdrlen); |
| 1106 | } |
| 1107 | |
| 1108 | DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n", |
| 1109 | __func__, |
| 1110 | skb); |
| 1111 | |
| 1112 | if (ath_tx_start(sc, skb) != 0) { |
| 1113 | DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__); |
| 1114 | dev_kfree_skb_any(skb); |
| 1115 | /* FIXME: Check for proper return value from ATH_DEV */ |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | static void ath9k_stop(struct ieee80211_hw *hw) |
| 1123 | { |
| 1124 | struct ath_softc *sc = hw->priv; |
| 1125 | int error; |
| 1126 | |
| 1127 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__); |
| 1128 | |
| 1129 | error = ath_suspend(sc); |
| 1130 | if (error) |
| 1131 | DPRINTF(sc, ATH_DBG_CONFIG, |
| 1132 | "%s: Device is no longer present\n", __func__); |
| 1133 | |
| 1134 | ieee80211_stop_queues(hw); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1135 | |
| 1136 | #ifdef CONFIG_RFKILL |
| 1137 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1138 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
| 1139 | #endif |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
| 1143 | struct ieee80211_if_init_conf *conf) |
| 1144 | { |
| 1145 | struct ath_softc *sc = hw->priv; |
| 1146 | int error, ic_opmode = 0; |
| 1147 | |
| 1148 | /* Support only vap for now */ |
| 1149 | |
| 1150 | if (sc->sc_nvaps) |
| 1151 | return -ENOBUFS; |
| 1152 | |
| 1153 | switch (conf->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1154 | case NL80211_IFTYPE_STATION: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1155 | ic_opmode = ATH9K_M_STA; |
| 1156 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1157 | case NL80211_IFTYPE_ADHOC: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1158 | ic_opmode = ATH9K_M_IBSS; |
| 1159 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1160 | case NL80211_IFTYPE_AP: |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 1161 | ic_opmode = ATH9K_M_HOSTAP; |
| 1162 | break; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1163 | default: |
| 1164 | DPRINTF(sc, ATH_DBG_FATAL, |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 1165 | "%s: Interface type %d not yet supported\n", |
| 1166 | __func__, conf->type); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1167 | return -EOPNOTSUPP; |
| 1168 | } |
| 1169 | |
| 1170 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n", |
| 1171 | __func__, |
| 1172 | ic_opmode); |
| 1173 | |
| 1174 | error = ath_vap_attach(sc, 0, conf->vif, ic_opmode); |
| 1175 | if (error) { |
| 1176 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1177 | "%s: Unable to attach vap, error: %d\n", |
| 1178 | __func__, error); |
| 1179 | return error; |
| 1180 | } |
| 1181 | |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 1182 | if (conf->type == NL80211_IFTYPE_AP) { |
| 1183 | /* TODO: is this a suitable place to start ANI for AP mode? */ |
| 1184 | /* Start ANI */ |
| 1185 | mod_timer(&sc->sc_ani.timer, |
| 1186 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
| 1187 | } |
| 1188 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1189 | return 0; |
| 1190 | } |
| 1191 | |
| 1192 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
| 1193 | struct ieee80211_if_init_conf *conf) |
| 1194 | { |
| 1195 | struct ath_softc *sc = hw->priv; |
| 1196 | struct ath_vap *avp; |
| 1197 | int error; |
| 1198 | |
| 1199 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__); |
| 1200 | |
| 1201 | avp = sc->sc_vaps[0]; |
| 1202 | if (avp == NULL) { |
| 1203 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n", |
| 1204 | __func__); |
| 1205 | return; |
| 1206 | } |
| 1207 | |
| 1208 | #ifdef CONFIG_SLOW_ANT_DIV |
| 1209 | ath_slow_ant_div_stop(&sc->sc_antdiv); |
| 1210 | #endif |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 1211 | /* Stop ANI */ |
| 1212 | del_timer_sync(&sc->sc_ani.timer); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1213 | |
| 1214 | /* Update ratectrl */ |
| 1215 | ath_rate_newstate(sc, avp); |
| 1216 | |
| 1217 | /* Reclaim beacon resources */ |
Sujith | b4696c8b | 2008-08-11 14:04:52 +0530 | [diff] [blame] | 1218 | if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP || |
| 1219 | sc->sc_ah->ah_opmode == ATH9K_M_IBSS) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1220 | ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq); |
| 1221 | ath_beacon_return(sc, avp); |
| 1222 | } |
| 1223 | |
| 1224 | /* Set interrupt mask */ |
| 1225 | sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
| 1226 | ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL); |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1227 | sc->sc_flags &= ~SC_OP_BEACONS; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1228 | |
| 1229 | error = ath_vap_detach(sc, 0); |
| 1230 | if (error) |
| 1231 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1232 | "%s: Unable to detach vap, error: %d\n", |
| 1233 | __func__, error); |
| 1234 | } |
| 1235 | |
| 1236 | static int ath9k_config(struct ieee80211_hw *hw, |
| 1237 | struct ieee80211_conf *conf) |
| 1238 | { |
| 1239 | struct ath_softc *sc = hw->priv; |
| 1240 | struct ieee80211_channel *curchan = hw->conf.channel; |
| 1241 | int pos; |
| 1242 | |
| 1243 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n", |
| 1244 | __func__, |
| 1245 | curchan->center_freq); |
| 1246 | |
| 1247 | pos = ath_get_channel(sc, curchan); |
| 1248 | if (pos == -1) { |
| 1249 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__); |
| 1250 | return -EINVAL; |
| 1251 | } |
| 1252 | |
| 1253 | sc->sc_ah->ah_channels[pos].chanmode = |
Sujith | 86b89ee | 2008-08-07 10:54:57 +0530 | [diff] [blame] | 1254 | (curchan->band == IEEE80211_BAND_2GHZ) ? |
| 1255 | CHANNEL_G : CHANNEL_A; |
| 1256 | |
| 1257 | if (sc->sc_curaid && hw->conf.ht_conf.ht_supported) |
| 1258 | sc->sc_ah->ah_channels[pos].chanmode = |
| 1259 | ath_get_extchanmode(sc, curchan); |
| 1260 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1261 | sc->sc_config.txpowlimit = 2 * conf->power_level; |
| 1262 | |
| 1263 | /* set h/w channel */ |
| 1264 | if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) |
| 1265 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n", |
| 1266 | __func__); |
| 1267 | |
| 1268 | return 0; |
| 1269 | } |
| 1270 | |
| 1271 | static int ath9k_config_interface(struct ieee80211_hw *hw, |
| 1272 | struct ieee80211_vif *vif, |
| 1273 | struct ieee80211_if_conf *conf) |
| 1274 | { |
| 1275 | struct ath_softc *sc = hw->priv; |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 1276 | struct ath_hal *ah = sc->sc_ah; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1277 | struct ath_vap *avp; |
| 1278 | u32 rfilt = 0; |
| 1279 | int error, i; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1280 | |
| 1281 | avp = sc->sc_vaps[0]; |
| 1282 | if (avp == NULL) { |
| 1283 | DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n", |
| 1284 | __func__); |
| 1285 | return -EINVAL; |
| 1286 | } |
| 1287 | |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 1288 | /* TODO: Need to decide which hw opmode to use for multi-interface |
| 1289 | * cases */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1290 | if (vif->type == NL80211_IFTYPE_AP && |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 1291 | ah->ah_opmode != ATH9K_M_HOSTAP) { |
| 1292 | ah->ah_opmode = ATH9K_M_HOSTAP; |
| 1293 | ath9k_hw_setopmode(ah); |
| 1294 | ath9k_hw_write_associd(ah, sc->sc_myaddr, 0); |
| 1295 | /* Request full reset to get hw opmode changed properly */ |
| 1296 | sc->sc_flags |= SC_OP_FULL_RESET; |
| 1297 | } |
| 1298 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1299 | if ((conf->changed & IEEE80211_IFCC_BSSID) && |
| 1300 | !is_zero_ether_addr(conf->bssid)) { |
| 1301 | switch (vif->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1302 | case NL80211_IFTYPE_STATION: |
| 1303 | case NL80211_IFTYPE_ADHOC: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1304 | /* Update ratectrl about the new state */ |
| 1305 | ath_rate_newstate(sc, avp); |
| 1306 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1307 | /* Set BSSID */ |
| 1308 | memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN); |
| 1309 | sc->sc_curaid = 0; |
| 1310 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, |
| 1311 | sc->sc_curaid); |
| 1312 | |
| 1313 | /* Set aggregation protection mode parameters */ |
| 1314 | sc->sc_config.ath_aggr_prot = 0; |
| 1315 | |
| 1316 | /* |
| 1317 | * Reset our TSF so that its value is lower than the |
| 1318 | * beacon that we are trying to catch. |
| 1319 | * Only then hw will update its TSF register with the |
| 1320 | * new beacon. Reset the TSF before setting the BSSID |
| 1321 | * to avoid allowing in any frames that would update |
| 1322 | * our TSF only to have us clear it |
| 1323 | * immediately thereafter. |
| 1324 | */ |
| 1325 | ath9k_hw_reset_tsf(sc->sc_ah); |
| 1326 | |
| 1327 | /* Disable BMISS interrupt when we're not associated */ |
| 1328 | ath9k_hw_set_interrupts(sc->sc_ah, |
| 1329 | sc->sc_imask & |
| 1330 | ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS)); |
| 1331 | sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
| 1332 | |
| 1333 | DPRINTF(sc, ATH_DBG_CONFIG, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1334 | "%s: RX filter 0x%x bssid %pM aid 0x%x\n", |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1335 | __func__, rfilt, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1336 | sc->sc_curbssid, sc->sc_curaid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1337 | |
| 1338 | /* need to reconfigure the beacon */ |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1339 | sc->sc_flags &= ~SC_OP_BEACONS ; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1340 | |
| 1341 | break; |
| 1342 | default: |
| 1343 | break; |
| 1344 | } |
| 1345 | } |
| 1346 | |
| 1347 | if ((conf->changed & IEEE80211_IFCC_BEACON) && |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1348 | ((vif->type == NL80211_IFTYPE_ADHOC) || |
| 1349 | (vif->type == NL80211_IFTYPE_AP))) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1350 | /* |
| 1351 | * Allocate and setup the beacon frame. |
| 1352 | * |
| 1353 | * Stop any previous beacon DMA. This may be |
| 1354 | * necessary, for example, when an ibss merge |
| 1355 | * causes reconfiguration; we may be called |
| 1356 | * with beacon transmission active. |
| 1357 | */ |
| 1358 | ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq); |
| 1359 | |
| 1360 | error = ath_beacon_alloc(sc, 0); |
| 1361 | if (error != 0) |
| 1362 | return error; |
| 1363 | |
| 1364 | ath_beacon_sync(sc, 0); |
| 1365 | } |
| 1366 | |
| 1367 | /* Check for WLAN_CAPABILITY_PRIVACY ? */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1368 | if ((avp->av_opmode != NL80211_IFTYPE_STATION)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1369 | for (i = 0; i < IEEE80211_WEP_NKID; i++) |
| 1370 | if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i)) |
| 1371 | ath9k_hw_keysetmac(sc->sc_ah, |
| 1372 | (u16)i, |
| 1373 | sc->sc_curbssid); |
| 1374 | } |
| 1375 | |
| 1376 | /* Only legacy IBSS for now */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1377 | if (vif->type == NL80211_IFTYPE_ADHOC) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1378 | ath_update_chainmask(sc, 0); |
| 1379 | |
| 1380 | return 0; |
| 1381 | } |
| 1382 | |
| 1383 | #define SUPPORTED_FILTERS \ |
| 1384 | (FIF_PROMISC_IN_BSS | \ |
| 1385 | FIF_ALLMULTI | \ |
| 1386 | FIF_CONTROL | \ |
| 1387 | FIF_OTHER_BSS | \ |
| 1388 | FIF_BCN_PRBRESP_PROMISC | \ |
| 1389 | FIF_FCSFAIL) |
| 1390 | |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1391 | /* FIXME: sc->sc_full_reset ? */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1392 | static void ath9k_configure_filter(struct ieee80211_hw *hw, |
| 1393 | unsigned int changed_flags, |
| 1394 | unsigned int *total_flags, |
| 1395 | int mc_count, |
| 1396 | struct dev_mc_list *mclist) |
| 1397 | { |
| 1398 | struct ath_softc *sc = hw->priv; |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1399 | u32 rfilt; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1400 | |
| 1401 | changed_flags &= SUPPORTED_FILTERS; |
| 1402 | *total_flags &= SUPPORTED_FILTERS; |
| 1403 | |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1404 | sc->rx_filter = *total_flags; |
| 1405 | rfilt = ath_calcrxfilter(sc); |
| 1406 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); |
| 1407 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1408 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
| 1409 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1410 | ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1411 | } |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1412 | |
| 1413 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set HW RX filter: 0x%x\n", |
| 1414 | __func__, sc->rx_filter); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | static void ath9k_sta_notify(struct ieee80211_hw *hw, |
| 1418 | struct ieee80211_vif *vif, |
| 1419 | enum sta_notify_cmd cmd, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1420 | struct ieee80211_sta *sta) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1421 | { |
| 1422 | struct ath_softc *sc = hw->priv; |
| 1423 | struct ath_node *an; |
| 1424 | unsigned long flags; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1425 | |
| 1426 | spin_lock_irqsave(&sc->node_lock, flags); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1427 | an = ath_node_find(sc, sta->addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1428 | spin_unlock_irqrestore(&sc->node_lock, flags); |
| 1429 | |
| 1430 | switch (cmd) { |
| 1431 | case STA_NOTIFY_ADD: |
| 1432 | spin_lock_irqsave(&sc->node_lock, flags); |
| 1433 | if (!an) { |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1434 | ath_node_attach(sc, sta->addr, 0); |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1435 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %pM\n", |
| 1436 | __func__, sta->addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1437 | } else { |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1438 | ath_node_get(sc, sta->addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1439 | } |
| 1440 | spin_unlock_irqrestore(&sc->node_lock, flags); |
| 1441 | break; |
| 1442 | case STA_NOTIFY_REMOVE: |
| 1443 | if (!an) |
| 1444 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1445 | "%s: Removal of a non-existent node\n", |
| 1446 | __func__); |
| 1447 | else { |
| 1448 | ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT); |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1449 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %pM\n", |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1450 | __func__, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1451 | sta->addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1452 | } |
| 1453 | break; |
| 1454 | default: |
| 1455 | break; |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | static int ath9k_conf_tx(struct ieee80211_hw *hw, |
| 1460 | u16 queue, |
| 1461 | const struct ieee80211_tx_queue_params *params) |
| 1462 | { |
| 1463 | struct ath_softc *sc = hw->priv; |
Sujith | ea9880f | 2008-08-07 10:53:10 +0530 | [diff] [blame] | 1464 | struct ath9k_tx_queue_info qi; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1465 | int ret = 0, qnum; |
| 1466 | |
| 1467 | if (queue >= WME_NUM_AC) |
| 1468 | return 0; |
| 1469 | |
| 1470 | qi.tqi_aifs = params->aifs; |
| 1471 | qi.tqi_cwmin = params->cw_min; |
| 1472 | qi.tqi_cwmax = params->cw_max; |
| 1473 | qi.tqi_burstTime = params->txop; |
| 1474 | qnum = ath_get_hal_qnum(queue, sc); |
| 1475 | |
| 1476 | DPRINTF(sc, ATH_DBG_CONFIG, |
| 1477 | "%s: Configure tx [queue/halq] [%d/%d], " |
| 1478 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", |
| 1479 | __func__, |
| 1480 | queue, |
| 1481 | qnum, |
| 1482 | params->aifs, |
| 1483 | params->cw_min, |
| 1484 | params->cw_max, |
| 1485 | params->txop); |
| 1486 | |
| 1487 | ret = ath_txq_update(sc, qnum, &qi); |
| 1488 | if (ret) |
| 1489 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1490 | "%s: TXQ Update failed\n", __func__); |
| 1491 | |
| 1492 | return ret; |
| 1493 | } |
| 1494 | |
| 1495 | static int ath9k_set_key(struct ieee80211_hw *hw, |
| 1496 | enum set_key_cmd cmd, |
| 1497 | const u8 *local_addr, |
| 1498 | const u8 *addr, |
| 1499 | struct ieee80211_key_conf *key) |
| 1500 | { |
| 1501 | struct ath_softc *sc = hw->priv; |
| 1502 | int ret = 0; |
| 1503 | |
| 1504 | DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__); |
| 1505 | |
| 1506 | switch (cmd) { |
| 1507 | case SET_KEY: |
| 1508 | ret = ath_key_config(sc, addr, key); |
| 1509 | if (!ret) { |
| 1510 | set_bit(key->keyidx, sc->sc_keymap); |
| 1511 | key->hw_key_idx = key->keyidx; |
| 1512 | /* push IV and Michael MIC generation to stack */ |
| 1513 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
Senthil Balasubramanian | 1b96175 | 2008-09-01 19:45:21 +0530 | [diff] [blame] | 1514 | if (key->alg == ALG_TKIP) |
| 1515 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1516 | } |
| 1517 | break; |
| 1518 | case DISABLE_KEY: |
| 1519 | ath_key_delete(sc, key); |
| 1520 | clear_bit(key->keyidx, sc->sc_keymap); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1521 | break; |
| 1522 | default: |
| 1523 | ret = -EINVAL; |
| 1524 | } |
| 1525 | |
| 1526 | return ret; |
| 1527 | } |
| 1528 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1529 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
| 1530 | struct ieee80211_vif *vif, |
| 1531 | struct ieee80211_bss_conf *bss_conf, |
| 1532 | u32 changed) |
| 1533 | { |
| 1534 | struct ath_softc *sc = hw->priv; |
| 1535 | |
| 1536 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
| 1537 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n", |
| 1538 | __func__, |
| 1539 | bss_conf->use_short_preamble); |
| 1540 | if (bss_conf->use_short_preamble) |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1541 | sc->sc_flags |= SC_OP_PREAMBLE_SHORT; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1542 | else |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1543 | sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
| 1547 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n", |
| 1548 | __func__, |
| 1549 | bss_conf->use_cts_prot); |
| 1550 | if (bss_conf->use_cts_prot && |
| 1551 | hw->conf.channel->band != IEEE80211_BAND_5GHZ) |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1552 | sc->sc_flags |= SC_OP_PROTECT_ENABLE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1553 | else |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 1554 | sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | if (changed & BSS_CHANGED_HT) { |
| 1558 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n", |
| 1559 | __func__, |
| 1560 | bss_conf->assoc_ht); |
| 1561 | ath9k_ht_conf(sc, bss_conf); |
| 1562 | } |
| 1563 | |
| 1564 | if (changed & BSS_CHANGED_ASSOC) { |
| 1565 | DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n", |
| 1566 | __func__, |
| 1567 | bss_conf->assoc); |
| 1568 | ath9k_bss_assoc_info(sc, bss_conf); |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
| 1573 | { |
| 1574 | u64 tsf; |
| 1575 | struct ath_softc *sc = hw->priv; |
| 1576 | struct ath_hal *ah = sc->sc_ah; |
| 1577 | |
| 1578 | tsf = ath9k_hw_gettsf64(ah); |
| 1579 | |
| 1580 | return tsf; |
| 1581 | } |
| 1582 | |
| 1583 | static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
| 1584 | { |
| 1585 | struct ath_softc *sc = hw->priv; |
| 1586 | struct ath_hal *ah = sc->sc_ah; |
| 1587 | |
| 1588 | ath9k_hw_reset_tsf(ah); |
| 1589 | } |
| 1590 | |
| 1591 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
| 1592 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1593 | struct ieee80211_sta *sta, |
| 1594 | u16 tid, u16 *ssn) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1595 | { |
| 1596 | struct ath_softc *sc = hw->priv; |
| 1597 | int ret = 0; |
| 1598 | |
| 1599 | switch (action) { |
| 1600 | case IEEE80211_AMPDU_RX_START: |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1601 | ret = ath_rx_aggr_start(sc, sta->addr, tid, ssn); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1602 | if (ret < 0) |
| 1603 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1604 | "%s: Unable to start RX aggregation\n", |
| 1605 | __func__); |
| 1606 | break; |
| 1607 | case IEEE80211_AMPDU_RX_STOP: |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1608 | ret = ath_rx_aggr_stop(sc, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1609 | if (ret < 0) |
| 1610 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1611 | "%s: Unable to stop RX aggregation\n", |
| 1612 | __func__); |
| 1613 | break; |
| 1614 | case IEEE80211_AMPDU_TX_START: |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1615 | ret = ath_tx_aggr_start(sc, sta->addr, tid, ssn); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1616 | if (ret < 0) |
| 1617 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1618 | "%s: Unable to start TX aggregation\n", |
| 1619 | __func__); |
| 1620 | else |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1621 | ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1622 | break; |
| 1623 | case IEEE80211_AMPDU_TX_STOP: |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1624 | ret = ath_tx_aggr_stop(sc, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1625 | if (ret < 0) |
| 1626 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1627 | "%s: Unable to stop TX aggregation\n", |
| 1628 | __func__); |
| 1629 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1630 | ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1631 | break; |
| 1632 | default: |
| 1633 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1634 | "%s: Unknown AMPDU action\n", __func__); |
| 1635 | } |
| 1636 | |
| 1637 | return ret; |
| 1638 | } |
| 1639 | |
Johannes Berg | 4233df6 | 2008-10-13 13:35:05 +0200 | [diff] [blame] | 1640 | static int ath9k_no_fragmentation(struct ieee80211_hw *hw, u32 value) |
| 1641 | { |
| 1642 | return -EOPNOTSUPP; |
| 1643 | } |
| 1644 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1645 | static struct ieee80211_ops ath9k_ops = { |
| 1646 | .tx = ath9k_tx, |
| 1647 | .start = ath9k_start, |
| 1648 | .stop = ath9k_stop, |
| 1649 | .add_interface = ath9k_add_interface, |
| 1650 | .remove_interface = ath9k_remove_interface, |
| 1651 | .config = ath9k_config, |
| 1652 | .config_interface = ath9k_config_interface, |
| 1653 | .configure_filter = ath9k_configure_filter, |
| 1654 | .get_stats = NULL, |
| 1655 | .sta_notify = ath9k_sta_notify, |
| 1656 | .conf_tx = ath9k_conf_tx, |
| 1657 | .get_tx_stats = NULL, |
| 1658 | .bss_info_changed = ath9k_bss_info_changed, |
| 1659 | .set_tim = NULL, |
| 1660 | .set_key = ath9k_set_key, |
| 1661 | .hw_scan = NULL, |
| 1662 | .get_tkip_seq = NULL, |
| 1663 | .set_rts_threshold = NULL, |
| 1664 | .set_frag_threshold = NULL, |
| 1665 | .set_retry_limit = NULL, |
| 1666 | .get_tsf = ath9k_get_tsf, |
| 1667 | .reset_tsf = ath9k_reset_tsf, |
| 1668 | .tx_last_beacon = NULL, |
Johannes Berg | 4233df6 | 2008-10-13 13:35:05 +0200 | [diff] [blame] | 1669 | .ampdu_action = ath9k_ampdu_action, |
| 1670 | .set_frag_threshold = ath9k_no_fragmentation, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1671 | }; |
| 1672 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1673 | static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 1674 | { |
| 1675 | void __iomem *mem; |
| 1676 | struct ath_softc *sc; |
| 1677 | struct ieee80211_hw *hw; |
| 1678 | const char *athname; |
| 1679 | u8 csz; |
| 1680 | u32 val; |
| 1681 | int ret = 0; |
| 1682 | |
| 1683 | if (pci_enable_device(pdev)) |
| 1684 | return -EIO; |
| 1685 | |
| 1686 | /* XXX 32-bit addressing only */ |
| 1687 | if (pci_set_dma_mask(pdev, 0xffffffff)) { |
| 1688 | printk(KERN_ERR "ath_pci: 32-bit DMA not available\n"); |
| 1689 | ret = -ENODEV; |
| 1690 | goto bad; |
| 1691 | } |
| 1692 | |
| 1693 | /* |
| 1694 | * Cache line size is used to size and align various |
| 1695 | * structures used to communicate with the hardware. |
| 1696 | */ |
| 1697 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); |
| 1698 | if (csz == 0) { |
| 1699 | /* |
| 1700 | * Linux 2.4.18 (at least) writes the cache line size |
| 1701 | * register as a 16-bit wide register which is wrong. |
| 1702 | * We must have this setup properly for rx buffer |
| 1703 | * DMA to work so force a reasonable value here if it |
| 1704 | * comes up zero. |
| 1705 | */ |
| 1706 | csz = L1_CACHE_BYTES / sizeof(u32); |
| 1707 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); |
| 1708 | } |
| 1709 | /* |
| 1710 | * The default setting of latency timer yields poor results, |
| 1711 | * set it to the value used by other systems. It may be worth |
| 1712 | * tweaking this setting more. |
| 1713 | */ |
| 1714 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); |
| 1715 | |
| 1716 | pci_set_master(pdev); |
| 1717 | |
| 1718 | /* |
| 1719 | * Disable the RETRY_TIMEOUT register (0x41) to keep |
| 1720 | * PCI Tx retries from interfering with C3 CPU state. |
| 1721 | */ |
| 1722 | pci_read_config_dword(pdev, 0x40, &val); |
| 1723 | if ((val & 0x0000ff00) != 0) |
| 1724 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
| 1725 | |
| 1726 | ret = pci_request_region(pdev, 0, "ath9k"); |
| 1727 | if (ret) { |
| 1728 | dev_err(&pdev->dev, "PCI memory region reserve error\n"); |
| 1729 | ret = -ENODEV; |
| 1730 | goto bad; |
| 1731 | } |
| 1732 | |
| 1733 | mem = pci_iomap(pdev, 0, 0); |
| 1734 | if (!mem) { |
| 1735 | printk(KERN_ERR "PCI memory map error\n") ; |
| 1736 | ret = -EIO; |
| 1737 | goto bad1; |
| 1738 | } |
| 1739 | |
| 1740 | hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops); |
| 1741 | if (hw == NULL) { |
| 1742 | printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n"); |
| 1743 | goto bad2; |
| 1744 | } |
| 1745 | |
Sujith | 19b73c7 | 2008-08-14 13:28:20 +0530 | [diff] [blame] | 1746 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
Jouni Malinen | e022edb | 2008-08-22 17:31:33 +0300 | [diff] [blame] | 1747 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | |
Sujith | 19b73c7 | 2008-08-14 13:28:20 +0530 | [diff] [blame] | 1748 | IEEE80211_HW_SIGNAL_DBM | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1749 | IEEE80211_HW_NOISE_DBM; |
| 1750 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1751 | hw->wiphy->interface_modes = |
| 1752 | BIT(NL80211_IFTYPE_AP) | |
| 1753 | BIT(NL80211_IFTYPE_STATION) | |
| 1754 | BIT(NL80211_IFTYPE_ADHOC); |
| 1755 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1756 | SET_IEEE80211_DEV(hw, &pdev->dev); |
| 1757 | pci_set_drvdata(pdev, hw); |
| 1758 | |
| 1759 | sc = hw->priv; |
| 1760 | sc->hw = hw; |
| 1761 | sc->pdev = pdev; |
| 1762 | sc->mem = mem; |
| 1763 | |
| 1764 | if (ath_attach(id->device, sc) != 0) { |
| 1765 | ret = -ENODEV; |
| 1766 | goto bad3; |
| 1767 | } |
| 1768 | |
| 1769 | /* setup interrupt service routine */ |
| 1770 | |
| 1771 | if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) { |
| 1772 | printk(KERN_ERR "%s: request_irq failed\n", |
| 1773 | wiphy_name(hw->wiphy)); |
| 1774 | ret = -EIO; |
| 1775 | goto bad4; |
| 1776 | } |
| 1777 | |
| 1778 | athname = ath9k_hw_probe(id->vendor, id->device); |
| 1779 | |
| 1780 | printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n", |
| 1781 | wiphy_name(hw->wiphy), |
| 1782 | athname ? athname : "Atheros ???", |
| 1783 | (unsigned long)mem, pdev->irq); |
| 1784 | |
| 1785 | return 0; |
| 1786 | bad4: |
| 1787 | ath_detach(sc); |
| 1788 | bad3: |
| 1789 | ieee80211_free_hw(hw); |
| 1790 | bad2: |
| 1791 | pci_iounmap(pdev, mem); |
| 1792 | bad1: |
| 1793 | pci_release_region(pdev, 0); |
| 1794 | bad: |
| 1795 | pci_disable_device(pdev); |
| 1796 | return ret; |
| 1797 | } |
| 1798 | |
| 1799 | static void ath_pci_remove(struct pci_dev *pdev) |
| 1800 | { |
| 1801 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
| 1802 | struct ath_softc *sc = hw->priv; |
Senthil Balasubramanian | 6115e85 | 2008-09-22 14:22:39 +0530 | [diff] [blame] | 1803 | enum ath9k_int status; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1804 | |
Senthil Balasubramanian | 6115e85 | 2008-09-22 14:22:39 +0530 | [diff] [blame] | 1805 | if (pdev->irq) { |
| 1806 | ath9k_hw_set_interrupts(sc->sc_ah, 0); |
| 1807 | /* clear the ISR */ |
| 1808 | ath9k_hw_getisr(sc->sc_ah, &status); |
David S. Miller | b262e60 | 2008-10-01 06:12:56 -0700 | [diff] [blame] | 1809 | sc->sc_flags |= SC_OP_INVALID; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1810 | free_irq(pdev->irq, sc); |
Senthil Balasubramanian | 6115e85 | 2008-09-22 14:22:39 +0530 | [diff] [blame] | 1811 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1812 | ath_detach(sc); |
Senthil Balasubramanian | 6115e85 | 2008-09-22 14:22:39 +0530 | [diff] [blame] | 1813 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1814 | pci_iounmap(pdev, sc->mem); |
| 1815 | pci_release_region(pdev, 0); |
| 1816 | pci_disable_device(pdev); |
| 1817 | ieee80211_free_hw(hw); |
| 1818 | } |
| 1819 | |
| 1820 | #ifdef CONFIG_PM |
| 1821 | |
| 1822 | static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 1823 | { |
Vasanthakumar Thiagarajan | c83be68 | 2008-08-25 20:47:29 +0530 | [diff] [blame] | 1824 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
| 1825 | struct ath_softc *sc = hw->priv; |
| 1826 | |
| 1827 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1828 | |
| 1829 | #ifdef CONFIG_RFKILL |
| 1830 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1831 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
| 1832 | #endif |
| 1833 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1834 | pci_save_state(pdev); |
| 1835 | pci_disable_device(pdev); |
| 1836 | pci_set_power_state(pdev, 3); |
| 1837 | |
| 1838 | return 0; |
| 1839 | } |
| 1840 | |
| 1841 | static int ath_pci_resume(struct pci_dev *pdev) |
| 1842 | { |
Vasanthakumar Thiagarajan | c83be68 | 2008-08-25 20:47:29 +0530 | [diff] [blame] | 1843 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
| 1844 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1845 | u32 val; |
| 1846 | int err; |
| 1847 | |
| 1848 | err = pci_enable_device(pdev); |
| 1849 | if (err) |
| 1850 | return err; |
| 1851 | pci_restore_state(pdev); |
| 1852 | /* |
| 1853 | * Suspend/Resume resets the PCI configuration space, so we have to |
| 1854 | * re-disable the RETRY_TIMEOUT register (0x41) to keep |
| 1855 | * PCI Tx retries from interfering with C3 CPU state |
| 1856 | */ |
| 1857 | pci_read_config_dword(pdev, 0x40, &val); |
| 1858 | if ((val & 0x0000ff00) != 0) |
| 1859 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
| 1860 | |
Vasanthakumar Thiagarajan | c83be68 | 2008-08-25 20:47:29 +0530 | [diff] [blame] | 1861 | /* Enable LED */ |
| 1862 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, |
| 1863 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 1864 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
| 1865 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1866 | #ifdef CONFIG_RFKILL |
| 1867 | /* |
| 1868 | * check the h/w rfkill state on resume |
| 1869 | * and start the rfkill poll timer |
| 1870 | */ |
| 1871 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1872 | queue_delayed_work(sc->hw->workqueue, |
| 1873 | &sc->rf_kill.rfkill_poll, 0); |
| 1874 | #endif |
| 1875 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1876 | return 0; |
| 1877 | } |
| 1878 | |
| 1879 | #endif /* CONFIG_PM */ |
| 1880 | |
| 1881 | MODULE_DEVICE_TABLE(pci, ath_pci_id_table); |
| 1882 | |
| 1883 | static struct pci_driver ath_pci_driver = { |
| 1884 | .name = "ath9k", |
| 1885 | .id_table = ath_pci_id_table, |
| 1886 | .probe = ath_pci_probe, |
| 1887 | .remove = ath_pci_remove, |
| 1888 | #ifdef CONFIG_PM |
| 1889 | .suspend = ath_pci_suspend, |
| 1890 | .resume = ath_pci_resume, |
| 1891 | #endif /* CONFIG_PM */ |
| 1892 | }; |
| 1893 | |
| 1894 | static int __init init_ath_pci(void) |
| 1895 | { |
| 1896 | printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION); |
| 1897 | |
| 1898 | if (pci_register_driver(&ath_pci_driver) < 0) { |
| 1899 | printk(KERN_ERR |
| 1900 | "ath_pci: No devices found, driver not installed.\n"); |
| 1901 | pci_unregister_driver(&ath_pci_driver); |
| 1902 | return -ENODEV; |
| 1903 | } |
| 1904 | |
| 1905 | return 0; |
| 1906 | } |
| 1907 | module_init(init_ath_pci); |
| 1908 | |
| 1909 | static void __exit exit_ath_pci(void) |
| 1910 | { |
| 1911 | pci_unregister_driver(&ath_pci_driver); |
| 1912 | printk(KERN_INFO "%s: driver unloaded\n", dev_info); |
| 1913 | } |
| 1914 | module_exit(exit_ath_pci); |