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 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 17 | #include <linux/nl80211.h> |
| 18 | #include "core.h" |
Benoit PAPILLAULT | 392dff8 | 2008-11-06 22:26:49 +0100 | [diff] [blame] | 19 | #include "reg.h" |
Sujith | 2a163c6 | 2008-11-28 22:21:08 +0530 | [diff] [blame] | 20 | #include "hw.h" |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 21 | |
| 22 | #define ATH_PCI_VERSION "0.1" |
| 23 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 24 | static char *dev_info = "ath9k"; |
| 25 | |
| 26 | MODULE_AUTHOR("Atheros Communications"); |
| 27 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); |
| 28 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); |
| 29 | MODULE_LICENSE("Dual BSD/GPL"); |
| 30 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 31 | /* We use the hw_value as an index into our private channel structure */ |
| 32 | |
| 33 | #define CHAN2G(_freq, _idx) { \ |
| 34 | .center_freq = (_freq), \ |
| 35 | .hw_value = (_idx), \ |
| 36 | .max_power = 30, \ |
| 37 | } |
| 38 | |
| 39 | #define CHAN5G(_freq, _idx) { \ |
| 40 | .band = IEEE80211_BAND_5GHZ, \ |
| 41 | .center_freq = (_freq), \ |
| 42 | .hw_value = (_idx), \ |
| 43 | .max_power = 30, \ |
| 44 | } |
| 45 | |
| 46 | /* Some 2 GHz radios are actually tunable on 2312-2732 |
| 47 | * on 5 MHz steps, we support the channels which we know |
| 48 | * we have calibration data for all cards though to make |
| 49 | * this static */ |
| 50 | static struct ieee80211_channel ath9k_2ghz_chantable[] = { |
| 51 | CHAN2G(2412, 0), /* Channel 1 */ |
| 52 | CHAN2G(2417, 1), /* Channel 2 */ |
| 53 | CHAN2G(2422, 2), /* Channel 3 */ |
| 54 | CHAN2G(2427, 3), /* Channel 4 */ |
| 55 | CHAN2G(2432, 4), /* Channel 5 */ |
| 56 | CHAN2G(2437, 5), /* Channel 6 */ |
| 57 | CHAN2G(2442, 6), /* Channel 7 */ |
| 58 | CHAN2G(2447, 7), /* Channel 8 */ |
| 59 | CHAN2G(2452, 8), /* Channel 9 */ |
| 60 | CHAN2G(2457, 9), /* Channel 10 */ |
| 61 | CHAN2G(2462, 10), /* Channel 11 */ |
| 62 | CHAN2G(2467, 11), /* Channel 12 */ |
| 63 | CHAN2G(2472, 12), /* Channel 13 */ |
| 64 | CHAN2G(2484, 13), /* Channel 14 */ |
| 65 | }; |
| 66 | |
| 67 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY |
| 68 | * on 5 MHz steps, we support the channels which we know |
| 69 | * we have calibration data for all cards though to make |
| 70 | * this static */ |
| 71 | static struct ieee80211_channel ath9k_5ghz_chantable[] = { |
| 72 | /* _We_ call this UNII 1 */ |
| 73 | CHAN5G(5180, 14), /* Channel 36 */ |
| 74 | CHAN5G(5200, 15), /* Channel 40 */ |
| 75 | CHAN5G(5220, 16), /* Channel 44 */ |
| 76 | CHAN5G(5240, 17), /* Channel 48 */ |
| 77 | /* _We_ call this UNII 2 */ |
| 78 | CHAN5G(5260, 18), /* Channel 52 */ |
| 79 | CHAN5G(5280, 19), /* Channel 56 */ |
| 80 | CHAN5G(5300, 20), /* Channel 60 */ |
| 81 | CHAN5G(5320, 21), /* Channel 64 */ |
| 82 | /* _We_ call this "Middle band" */ |
| 83 | CHAN5G(5500, 22), /* Channel 100 */ |
| 84 | CHAN5G(5520, 23), /* Channel 104 */ |
| 85 | CHAN5G(5540, 24), /* Channel 108 */ |
| 86 | CHAN5G(5560, 25), /* Channel 112 */ |
| 87 | CHAN5G(5580, 26), /* Channel 116 */ |
| 88 | CHAN5G(5600, 27), /* Channel 120 */ |
| 89 | CHAN5G(5620, 28), /* Channel 124 */ |
| 90 | CHAN5G(5640, 29), /* Channel 128 */ |
| 91 | CHAN5G(5660, 30), /* Channel 132 */ |
| 92 | CHAN5G(5680, 31), /* Channel 136 */ |
| 93 | CHAN5G(5700, 32), /* Channel 140 */ |
| 94 | /* _We_ call this UNII 3 */ |
| 95 | CHAN5G(5745, 33), /* Channel 149 */ |
| 96 | CHAN5G(5765, 34), /* Channel 153 */ |
| 97 | CHAN5G(5785, 35), /* Channel 157 */ |
| 98 | CHAN5G(5805, 36), /* Channel 161 */ |
| 99 | CHAN5G(5825, 37), /* Channel 165 */ |
| 100 | }; |
| 101 | |
Luis R. Rodriguez | ce111ba | 2008-12-23 15:58:39 -0800 | [diff] [blame] | 102 | static void ath_cache_conf_rate(struct ath_softc *sc, |
| 103 | struct ieee80211_conf *conf) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 104 | { |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 105 | switch (conf->channel->band) { |
| 106 | case IEEE80211_BAND_2GHZ: |
| 107 | if (conf_is_ht20(conf)) |
| 108 | sc->cur_rate_table = |
| 109 | sc->hw_rate_table[ATH9K_MODE_11NG_HT20]; |
| 110 | else if (conf_is_ht40_minus(conf)) |
| 111 | sc->cur_rate_table = |
| 112 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS]; |
| 113 | else if (conf_is_ht40_plus(conf)) |
| 114 | sc->cur_rate_table = |
| 115 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS]; |
Luis R. Rodriguez | 9674225 | 2008-12-23 15:58:38 -0800 | [diff] [blame] | 116 | else |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 117 | sc->cur_rate_table = |
| 118 | sc->hw_rate_table[ATH9K_MODE_11G]; |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 119 | break; |
| 120 | case IEEE80211_BAND_5GHZ: |
| 121 | if (conf_is_ht20(conf)) |
| 122 | sc->cur_rate_table = |
| 123 | sc->hw_rate_table[ATH9K_MODE_11NA_HT20]; |
| 124 | else if (conf_is_ht40_minus(conf)) |
| 125 | sc->cur_rate_table = |
| 126 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS]; |
| 127 | else if (conf_is_ht40_plus(conf)) |
| 128 | sc->cur_rate_table = |
| 129 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS]; |
| 130 | else |
Luis R. Rodriguez | 9674225 | 2008-12-23 15:58:38 -0800 | [diff] [blame] | 131 | sc->cur_rate_table = |
| 132 | sc->hw_rate_table[ATH9K_MODE_11A]; |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 133 | break; |
| 134 | default: |
Luis R. Rodriguez | ce111ba | 2008-12-23 15:58:39 -0800 | [diff] [blame] | 135 | BUG_ON(1); |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 136 | break; |
| 137 | } |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | static void ath_update_txpow(struct ath_softc *sc) |
| 141 | { |
| 142 | struct ath_hal *ah = sc->sc_ah; |
| 143 | u32 txpow; |
| 144 | |
| 145 | if (sc->sc_curtxpow != sc->sc_config.txpowlimit) { |
| 146 | ath9k_hw_set_txpowerlimit(ah, sc->sc_config.txpowlimit); |
| 147 | /* read back in case value is clamped */ |
| 148 | ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow); |
| 149 | sc->sc_curtxpow = txpow; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | static u8 parse_mpdudensity(u8 mpdudensity) |
| 154 | { |
| 155 | /* |
| 156 | * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": |
| 157 | * 0 for no restriction |
| 158 | * 1 for 1/4 us |
| 159 | * 2 for 1/2 us |
| 160 | * 3 for 1 us |
| 161 | * 4 for 2 us |
| 162 | * 5 for 4 us |
| 163 | * 6 for 8 us |
| 164 | * 7 for 16 us |
| 165 | */ |
| 166 | switch (mpdudensity) { |
| 167 | case 0: |
| 168 | return 0; |
| 169 | case 1: |
| 170 | case 2: |
| 171 | case 3: |
| 172 | /* Our lower layer calculations limit our precision to |
| 173 | 1 microsecond */ |
| 174 | return 1; |
| 175 | case 4: |
| 176 | return 2; |
| 177 | case 5: |
| 178 | return 4; |
| 179 | case 6: |
| 180 | return 8; |
| 181 | case 7: |
| 182 | return 16; |
| 183 | default: |
| 184 | return 0; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band) |
| 189 | { |
| 190 | struct ath_rate_table *rate_table = NULL; |
| 191 | struct ieee80211_supported_band *sband; |
| 192 | struct ieee80211_rate *rate; |
| 193 | int i, maxrates; |
| 194 | |
| 195 | switch (band) { |
| 196 | case IEEE80211_BAND_2GHZ: |
| 197 | rate_table = sc->hw_rate_table[ATH9K_MODE_11G]; |
| 198 | break; |
| 199 | case IEEE80211_BAND_5GHZ: |
| 200 | rate_table = sc->hw_rate_table[ATH9K_MODE_11A]; |
| 201 | break; |
| 202 | default: |
| 203 | break; |
| 204 | } |
| 205 | |
| 206 | if (rate_table == NULL) |
| 207 | return; |
| 208 | |
| 209 | sband = &sc->sbands[band]; |
| 210 | rate = sc->rates[band]; |
| 211 | |
| 212 | if (rate_table->rate_cnt > ATH_RATE_MAX) |
| 213 | maxrates = ATH_RATE_MAX; |
| 214 | else |
| 215 | maxrates = rate_table->rate_cnt; |
| 216 | |
| 217 | for (i = 0; i < maxrates; i++) { |
| 218 | rate[i].bitrate = rate_table->info[i].ratekbps / 100; |
| 219 | rate[i].hw_value = rate_table->info[i].ratecode; |
| 220 | sband->n_bitrates++; |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 221 | DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n", |
| 222 | rate[i].bitrate / 10, rate[i].hw_value); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 223 | } |
| 224 | } |
| 225 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 226 | /* |
| 227 | * Set/change channels. If the channel is really being changed, it's done |
| 228 | * by reseting the chip. To accomplish this we must first cleanup any pending |
| 229 | * DMA, then restart stuff. |
| 230 | */ |
| 231 | static int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) |
| 232 | { |
| 233 | struct ath_hal *ah = sc->sc_ah; |
| 234 | bool fastcc = true, stopped; |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 235 | struct ieee80211_hw *hw = sc->hw; |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 236 | struct ieee80211_channel *channel = hw->conf.channel; |
| 237 | int r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 238 | |
| 239 | if (sc->sc_flags & SC_OP_INVALID) |
| 240 | return -EIO; |
| 241 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 242 | ath9k_ps_wakeup(sc); |
| 243 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 244 | /* |
| 245 | * This is only performed if the channel settings have |
| 246 | * actually changed. |
| 247 | * |
| 248 | * To switch channels clear any pending DMA operations; |
| 249 | * wait long enough for the RX fifo to drain, reset the |
| 250 | * hardware at the new frequency, and then re-enable |
| 251 | * the relevant bits of the h/w. |
| 252 | */ |
| 253 | ath9k_hw_set_interrupts(ah, 0); |
Sujith | 043a040 | 2009-01-16 21:38:47 +0530 | [diff] [blame] | 254 | ath_drain_all_txq(sc, false); |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 255 | stopped = ath_stoprecv(sc); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 256 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 257 | /* XXX: do not flush receive queue here. We don't want |
| 258 | * to flush data frames already in queue because of |
| 259 | * changing channel. */ |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 260 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 261 | if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) |
| 262 | fastcc = false; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 263 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 264 | DPRINTF(sc, ATH_DBG_CONFIG, |
| 265 | "(%u MHz) -> (%u MHz), chanwidth: %d\n", |
| 266 | sc->sc_ah->ah_curchan->channel, |
| 267 | channel->center_freq, sc->tx_chan_width); |
Sujith | 99405f9 | 2008-11-24 12:08:35 +0530 | [diff] [blame] | 268 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 269 | spin_lock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 270 | |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 271 | r = ath9k_hw_reset(ah, hchan, fastcc); |
| 272 | if (r) { |
| 273 | DPRINTF(sc, ATH_DBG_FATAL, |
| 274 | "Unable to reset channel (%u Mhz) " |
| 275 | "reset status %u\n", |
| 276 | channel->center_freq, r); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 277 | spin_unlock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 278 | return r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 279 | } |
Luis R. Rodriguez | c0d7c7a | 2008-12-23 15:58:50 -0800 | [diff] [blame] | 280 | spin_unlock_bh(&sc->sc_resetlock); |
| 281 | |
| 282 | sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE; |
| 283 | sc->sc_flags &= ~SC_OP_FULL_RESET; |
| 284 | |
| 285 | if (ath_startrecv(sc) != 0) { |
| 286 | DPRINTF(sc, ATH_DBG_FATAL, |
| 287 | "Unable to restart recv logic\n"); |
| 288 | return -EIO; |
| 289 | } |
| 290 | |
| 291 | ath_cache_conf_rate(sc, &hw->conf); |
| 292 | ath_update_txpow(sc); |
| 293 | ath9k_hw_set_interrupts(ah, sc->sc_imask); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 294 | ath9k_ps_restore(sc); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * This routine performs the periodic noise floor calibration function |
| 300 | * that is used to adjust and optimize the chip performance. This |
| 301 | * takes environmental changes (location, temperature) into account. |
| 302 | * When the task is complete, it reschedules itself depending on the |
| 303 | * appropriate interval that was calculated. |
| 304 | */ |
| 305 | static void ath_ani_calibrate(unsigned long data) |
| 306 | { |
| 307 | struct ath_softc *sc; |
| 308 | struct ath_hal *ah; |
| 309 | bool longcal = false; |
| 310 | bool shortcal = false; |
| 311 | bool aniflag = false; |
| 312 | unsigned int timestamp = jiffies_to_msecs(jiffies); |
| 313 | u32 cal_interval; |
| 314 | |
| 315 | sc = (struct ath_softc *)data; |
| 316 | ah = sc->sc_ah; |
| 317 | |
| 318 | /* |
| 319 | * don't calibrate when we're scanning. |
| 320 | * we are most likely not on our home channel. |
| 321 | */ |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 322 | if (sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 323 | return; |
| 324 | |
| 325 | /* Long calibration runs independently of short calibration. */ |
| 326 | if ((timestamp - sc->sc_ani.sc_longcal_timer) >= ATH_LONG_CALINTERVAL) { |
| 327 | longcal = true; |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 328 | DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 329 | sc->sc_ani.sc_longcal_timer = timestamp; |
| 330 | } |
| 331 | |
| 332 | /* Short calibration applies only while sc_caldone is false */ |
| 333 | if (!sc->sc_ani.sc_caldone) { |
| 334 | if ((timestamp - sc->sc_ani.sc_shortcal_timer) >= |
| 335 | ATH_SHORT_CALINTERVAL) { |
| 336 | shortcal = true; |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 337 | DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 338 | sc->sc_ani.sc_shortcal_timer = timestamp; |
| 339 | sc->sc_ani.sc_resetcal_timer = timestamp; |
| 340 | } |
| 341 | } else { |
| 342 | if ((timestamp - sc->sc_ani.sc_resetcal_timer) >= |
| 343 | ATH_RESTART_CALINTERVAL) { |
Luis R. Rodriguez | c9e27d9 | 2008-12-23 15:58:42 -0800 | [diff] [blame] | 344 | sc->sc_ani.sc_caldone = ath9k_hw_reset_calvalid(ah); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 345 | if (sc->sc_ani.sc_caldone) |
| 346 | sc->sc_ani.sc_resetcal_timer = timestamp; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | /* Verify whether we must check ANI */ |
| 351 | if ((timestamp - sc->sc_ani.sc_checkani_timer) >= |
| 352 | ATH_ANI_POLLINTERVAL) { |
| 353 | aniflag = true; |
| 354 | sc->sc_ani.sc_checkani_timer = timestamp; |
| 355 | } |
| 356 | |
| 357 | /* Skip all processing if there's nothing to do. */ |
| 358 | if (longcal || shortcal || aniflag) { |
| 359 | /* Call ANI routine if necessary */ |
| 360 | if (aniflag) |
| 361 | ath9k_hw_ani_monitor(ah, &sc->sc_halstats, |
| 362 | ah->ah_curchan); |
| 363 | |
| 364 | /* Perform calibration if necessary */ |
| 365 | if (longcal || shortcal) { |
| 366 | bool iscaldone = false; |
| 367 | |
| 368 | if (ath9k_hw_calibrate(ah, ah->ah_curchan, |
| 369 | sc->sc_rx_chainmask, longcal, |
| 370 | &iscaldone)) { |
| 371 | if (longcal) |
| 372 | sc->sc_ani.sc_noise_floor = |
| 373 | ath9k_hw_getchan_noise(ah, |
| 374 | ah->ah_curchan); |
| 375 | |
| 376 | DPRINTF(sc, ATH_DBG_ANI, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 377 | "calibrate chan %u/%x nf: %d\n", |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 378 | ah->ah_curchan->channel, |
| 379 | ah->ah_curchan->channelFlags, |
| 380 | sc->sc_ani.sc_noise_floor); |
| 381 | } else { |
| 382 | DPRINTF(sc, ATH_DBG_ANY, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 383 | "calibrate chan %u/%x failed\n", |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 384 | ah->ah_curchan->channel, |
| 385 | ah->ah_curchan->channelFlags); |
| 386 | } |
| 387 | sc->sc_ani.sc_caldone = iscaldone; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | /* |
| 392 | * Set timer interval based on previous results. |
| 393 | * The interval must be the shortest necessary to satisfy ANI, |
| 394 | * short calibration and long calibration. |
| 395 | */ |
Sujith | aac9207 | 2008-12-02 18:37:54 +0530 | [diff] [blame] | 396 | cal_interval = ATH_LONG_CALINTERVAL; |
| 397 | if (sc->sc_ah->ah_config.enable_ani) |
| 398 | cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 399 | if (!sc->sc_ani.sc_caldone) |
| 400 | cal_interval = min(cal_interval, (u32)ATH_SHORT_CALINTERVAL); |
| 401 | |
| 402 | mod_timer(&sc->sc_ani.timer, jiffies + msecs_to_jiffies(cal_interval)); |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Update tx/rx chainmask. For legacy association, |
| 407 | * hard code chainmask to 1x1, for 11n association, use |
Vasanthakumar Thiagarajan | c97c92d | 2009-01-02 15:35:46 +0530 | [diff] [blame] | 408 | * the chainmask configuration, for bt coexistence, use |
| 409 | * the chainmask configuration even in legacy mode. |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 410 | */ |
| 411 | static void ath_update_chainmask(struct ath_softc *sc, int is_ht) |
| 412 | { |
| 413 | sc->sc_flags |= SC_OP_CHAINMASK_UPDATE; |
Vasanthakumar Thiagarajan | c97c92d | 2009-01-02 15:35:46 +0530 | [diff] [blame] | 414 | if (is_ht || |
| 415 | (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_BT_COEX)) { |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 416 | sc->sc_tx_chainmask = sc->sc_ah->ah_caps.tx_chainmask; |
| 417 | sc->sc_rx_chainmask = sc->sc_ah->ah_caps.rx_chainmask; |
| 418 | } else { |
| 419 | sc->sc_tx_chainmask = 1; |
| 420 | sc->sc_rx_chainmask = 1; |
| 421 | } |
| 422 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 423 | DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n", |
| 424 | sc->sc_tx_chainmask, sc->sc_rx_chainmask); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) |
| 428 | { |
| 429 | struct ath_node *an; |
| 430 | |
| 431 | an = (struct ath_node *)sta->drv_priv; |
| 432 | |
| 433 | if (sc->sc_flags & SC_OP_TXAGGR) |
| 434 | ath_tx_node_init(sc, an); |
| 435 | |
| 436 | an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR + |
| 437 | sta->ht_cap.ampdu_factor); |
| 438 | an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density); |
| 439 | } |
| 440 | |
| 441 | static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) |
| 442 | { |
| 443 | struct ath_node *an = (struct ath_node *)sta->drv_priv; |
| 444 | |
| 445 | if (sc->sc_flags & SC_OP_TXAGGR) |
| 446 | ath_tx_node_cleanup(sc, an); |
| 447 | } |
| 448 | |
| 449 | static void ath9k_tasklet(unsigned long data) |
| 450 | { |
| 451 | struct ath_softc *sc = (struct ath_softc *)data; |
| 452 | u32 status = sc->sc_intrstatus; |
| 453 | |
| 454 | if (status & ATH9K_INT_FATAL) { |
| 455 | /* need a chip reset */ |
| 456 | ath_reset(sc, false); |
| 457 | return; |
| 458 | } else { |
| 459 | |
| 460 | if (status & |
| 461 | (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) { |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 462 | spin_lock_bh(&sc->rx.rxflushlock); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 463 | ath_rx_tasklet(sc, 0); |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 464 | spin_unlock_bh(&sc->rx.rxflushlock); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 465 | } |
| 466 | /* XXX: optimize this */ |
| 467 | if (status & ATH9K_INT_TX) |
| 468 | ath_tx_tasklet(sc); |
| 469 | } |
| 470 | |
| 471 | /* re-enable hardware interrupt */ |
| 472 | ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask); |
| 473 | } |
| 474 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 475 | irqreturn_t ath_isr(int irq, void *dev) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 476 | { |
| 477 | struct ath_softc *sc = dev; |
| 478 | struct ath_hal *ah = sc->sc_ah; |
| 479 | enum ath9k_int status; |
| 480 | bool sched = false; |
| 481 | |
| 482 | do { |
| 483 | if (sc->sc_flags & SC_OP_INVALID) { |
| 484 | /* |
| 485 | * The hardware is not ready/present, don't |
| 486 | * touch anything. Note this can happen early |
| 487 | * on if the IRQ is shared. |
| 488 | */ |
| 489 | return IRQ_NONE; |
| 490 | } |
| 491 | if (!ath9k_hw_intrpend(ah)) { /* shared irq, not for us */ |
| 492 | return IRQ_NONE; |
| 493 | } |
| 494 | |
| 495 | /* |
| 496 | * Figure out the reason(s) for the interrupt. Note |
| 497 | * that the hal returns a pseudo-ISR that may include |
| 498 | * bits we haven't explicitly enabled so we mask the |
| 499 | * value to insure we only process bits we requested. |
| 500 | */ |
| 501 | ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ |
| 502 | |
| 503 | status &= sc->sc_imask; /* discard unasked-for bits */ |
| 504 | |
| 505 | /* |
| 506 | * If there are no status bits set, then this interrupt was not |
| 507 | * for me (should have been caught above). |
| 508 | */ |
| 509 | if (!status) |
| 510 | return IRQ_NONE; |
| 511 | |
| 512 | sc->sc_intrstatus = status; |
| 513 | |
| 514 | if (status & ATH9K_INT_FATAL) { |
| 515 | /* need a chip reset */ |
| 516 | sched = true; |
| 517 | } else if (status & ATH9K_INT_RXORN) { |
| 518 | /* need a chip reset */ |
| 519 | sched = true; |
| 520 | } else { |
| 521 | if (status & ATH9K_INT_SWBA) { |
| 522 | /* schedule a tasklet for beacon handling */ |
| 523 | tasklet_schedule(&sc->bcon_tasklet); |
| 524 | } |
| 525 | if (status & ATH9K_INT_RXEOL) { |
| 526 | /* |
| 527 | * NB: the hardware should re-read the link when |
| 528 | * RXE bit is written, but it doesn't work |
| 529 | * at least on older hardware revs. |
| 530 | */ |
| 531 | sched = true; |
| 532 | } |
| 533 | |
| 534 | if (status & ATH9K_INT_TXURN) |
| 535 | /* bump tx trigger level */ |
| 536 | ath9k_hw_updatetxtriglevel(ah, true); |
| 537 | /* XXX: optimize this */ |
| 538 | if (status & ATH9K_INT_RX) |
| 539 | sched = true; |
| 540 | if (status & ATH9K_INT_TX) |
| 541 | sched = true; |
| 542 | if (status & ATH9K_INT_BMISS) |
| 543 | sched = true; |
| 544 | /* carrier sense timeout */ |
| 545 | if (status & ATH9K_INT_CST) |
| 546 | sched = true; |
| 547 | if (status & ATH9K_INT_MIB) { |
| 548 | /* |
| 549 | * Disable interrupts until we service the MIB |
| 550 | * interrupt; otherwise it will continue to |
| 551 | * fire. |
| 552 | */ |
| 553 | ath9k_hw_set_interrupts(ah, 0); |
| 554 | /* |
| 555 | * Let the hal handle the event. We assume |
| 556 | * it will clear whatever condition caused |
| 557 | * the interrupt. |
| 558 | */ |
| 559 | ath9k_hw_procmibevent(ah, &sc->sc_halstats); |
| 560 | ath9k_hw_set_interrupts(ah, sc->sc_imask); |
| 561 | } |
| 562 | if (status & ATH9K_INT_TIM_TIMER) { |
| 563 | if (!(ah->ah_caps.hw_caps & |
| 564 | ATH9K_HW_CAP_AUTOSLEEP)) { |
| 565 | /* Clear RxAbort bit so that we can |
| 566 | * receive frames */ |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 567 | ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 568 | ath9k_hw_setrxabort(ah, 0); |
| 569 | sched = true; |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 570 | sc->sc_flags |= SC_OP_WAIT_FOR_BEACON; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | } |
| 574 | } while (0); |
| 575 | |
Sujith | 817e11d | 2008-12-07 21:42:44 +0530 | [diff] [blame] | 576 | ath_debug_stat_interrupt(sc, status); |
| 577 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 578 | if (sched) { |
| 579 | /* turn off every interrupt except SWBA */ |
| 580 | ath9k_hw_set_interrupts(ah, (sc->sc_imask & ATH9K_INT_SWBA)); |
| 581 | tasklet_schedule(&sc->intr_tq); |
| 582 | } |
| 583 | |
| 584 | return IRQ_HANDLED; |
| 585 | } |
| 586 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 587 | static u32 ath_get_extchanmode(struct ath_softc *sc, |
Sujith | 99405f9 | 2008-11-24 12:08:35 +0530 | [diff] [blame] | 588 | struct ieee80211_channel *chan, |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 589 | enum nl80211_channel_type channel_type) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 590 | { |
| 591 | u32 chanmode = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 592 | |
| 593 | switch (chan->band) { |
| 594 | case IEEE80211_BAND_2GHZ: |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 595 | switch(channel_type) { |
| 596 | case NL80211_CHAN_NO_HT: |
| 597 | case NL80211_CHAN_HT20: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 598 | chanmode = CHANNEL_G_HT20; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 599 | break; |
| 600 | case NL80211_CHAN_HT40PLUS: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 601 | chanmode = CHANNEL_G_HT40PLUS; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 602 | break; |
| 603 | case NL80211_CHAN_HT40MINUS: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 604 | chanmode = CHANNEL_G_HT40MINUS; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 605 | break; |
| 606 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 607 | break; |
| 608 | case IEEE80211_BAND_5GHZ: |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 609 | switch(channel_type) { |
| 610 | case NL80211_CHAN_NO_HT: |
| 611 | case NL80211_CHAN_HT20: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 612 | chanmode = CHANNEL_A_HT20; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 613 | break; |
| 614 | case NL80211_CHAN_HT40PLUS: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 615 | chanmode = CHANNEL_A_HT40PLUS; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 616 | break; |
| 617 | case NL80211_CHAN_HT40MINUS: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 618 | chanmode = CHANNEL_A_HT40MINUS; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 619 | break; |
| 620 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 621 | break; |
| 622 | default: |
| 623 | break; |
| 624 | } |
| 625 | |
| 626 | return chanmode; |
| 627 | } |
| 628 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 629 | static int ath_keyset(struct ath_softc *sc, u16 keyix, |
| 630 | struct ath9k_keyval *hk, const u8 mac[ETH_ALEN]) |
| 631 | { |
| 632 | bool status; |
| 633 | |
| 634 | status = ath9k_hw_set_keycache_entry(sc->sc_ah, |
| 635 | keyix, hk, mac, false); |
| 636 | |
| 637 | return status != false; |
| 638 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 639 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 640 | static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 641 | struct ath9k_keyval *hk, |
| 642 | const u8 *addr) |
| 643 | { |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 644 | const u8 *key_rxmic; |
| 645 | const u8 *key_txmic; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 646 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 647 | key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; |
| 648 | key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 649 | |
| 650 | if (addr == NULL) { |
| 651 | /* Group key installation */ |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 652 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
| 653 | return ath_keyset(sc, keyix, hk, addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 654 | } |
| 655 | if (!sc->sc_splitmic) { |
| 656 | /* |
| 657 | * data key goes at first index, |
| 658 | * the hal handles the MIC keys at index+64. |
| 659 | */ |
| 660 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
| 661 | memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic)); |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 662 | return ath_keyset(sc, keyix, hk, addr); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 663 | } |
| 664 | /* |
| 665 | * TX key goes at first index, RX key at +32. |
| 666 | * The hal handles the MIC keys at index+64. |
| 667 | */ |
| 668 | memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 669 | if (!ath_keyset(sc, keyix, hk, NULL)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 670 | /* Txmic entry failed. No need to proceed further */ |
| 671 | DPRINTF(sc, ATH_DBG_KEYCACHE, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 672 | "Setting TX MIC Key Failed\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 673 | return 0; |
| 674 | } |
| 675 | |
| 676 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
| 677 | /* XXX delete tx key on failure? */ |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 678 | return ath_keyset(sc, keyix + 32, hk, addr); |
| 679 | } |
| 680 | |
| 681 | static int ath_reserve_key_cache_slot_tkip(struct ath_softc *sc) |
| 682 | { |
| 683 | int i; |
| 684 | |
| 685 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 2; i++) { |
| 686 | if (test_bit(i, sc->sc_keymap) || |
| 687 | test_bit(i + 64, sc->sc_keymap)) |
| 688 | continue; /* At least one part of TKIP key allocated */ |
| 689 | if (sc->sc_splitmic && |
| 690 | (test_bit(i + 32, sc->sc_keymap) || |
| 691 | test_bit(i + 64 + 32, sc->sc_keymap))) |
| 692 | continue; /* At least one part of TKIP key allocated */ |
| 693 | |
| 694 | /* Found a free slot for a TKIP key */ |
| 695 | return i; |
| 696 | } |
| 697 | return -1; |
| 698 | } |
| 699 | |
| 700 | static int ath_reserve_key_cache_slot(struct ath_softc *sc) |
| 701 | { |
| 702 | int i; |
| 703 | |
| 704 | /* First, try to find slots that would not be available for TKIP. */ |
| 705 | if (sc->sc_splitmic) { |
| 706 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 4; i++) { |
| 707 | if (!test_bit(i, sc->sc_keymap) && |
| 708 | (test_bit(i + 32, sc->sc_keymap) || |
| 709 | test_bit(i + 64, sc->sc_keymap) || |
| 710 | test_bit(i + 64 + 32, sc->sc_keymap))) |
| 711 | return i; |
| 712 | if (!test_bit(i + 32, sc->sc_keymap) && |
| 713 | (test_bit(i, sc->sc_keymap) || |
| 714 | test_bit(i + 64, sc->sc_keymap) || |
| 715 | test_bit(i + 64 + 32, sc->sc_keymap))) |
| 716 | return i + 32; |
| 717 | if (!test_bit(i + 64, sc->sc_keymap) && |
| 718 | (test_bit(i , sc->sc_keymap) || |
| 719 | test_bit(i + 32, sc->sc_keymap) || |
| 720 | test_bit(i + 64 + 32, sc->sc_keymap))) |
Jouni Malinen | ea61213 | 2008-12-18 14:31:10 +0200 | [diff] [blame] | 721 | return i + 64; |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 722 | if (!test_bit(i + 64 + 32, sc->sc_keymap) && |
| 723 | (test_bit(i, sc->sc_keymap) || |
| 724 | test_bit(i + 32, sc->sc_keymap) || |
| 725 | test_bit(i + 64, sc->sc_keymap))) |
Jouni Malinen | ea61213 | 2008-12-18 14:31:10 +0200 | [diff] [blame] | 726 | return i + 64 + 32; |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 727 | } |
| 728 | } else { |
| 729 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 2; i++) { |
| 730 | if (!test_bit(i, sc->sc_keymap) && |
| 731 | test_bit(i + 64, sc->sc_keymap)) |
| 732 | return i; |
| 733 | if (test_bit(i, sc->sc_keymap) && |
| 734 | !test_bit(i + 64, sc->sc_keymap)) |
| 735 | return i + 64; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | /* No partially used TKIP slots, pick any available slot */ |
| 740 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax; i++) { |
Jouni Malinen | be2864c | 2008-12-18 14:33:00 +0200 | [diff] [blame] | 741 | /* Do not allow slots that could be needed for TKIP group keys |
| 742 | * to be used. This limitation could be removed if we know that |
| 743 | * TKIP will not be used. */ |
| 744 | if (i >= 64 && i < 64 + IEEE80211_WEP_NKID) |
| 745 | continue; |
| 746 | if (sc->sc_splitmic) { |
| 747 | if (i >= 32 && i < 32 + IEEE80211_WEP_NKID) |
| 748 | continue; |
| 749 | if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID) |
| 750 | continue; |
| 751 | } |
| 752 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 753 | if (!test_bit(i, sc->sc_keymap)) |
| 754 | return i; /* Found a free slot for a key */ |
| 755 | } |
| 756 | |
| 757 | /* No free slot found */ |
| 758 | return -1; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 759 | } |
| 760 | |
| 761 | static int ath_key_config(struct ath_softc *sc, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 762 | struct ieee80211_sta *sta, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 763 | struct ieee80211_key_conf *key) |
| 764 | { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 765 | struct ath9k_keyval hk; |
| 766 | const u8 *mac = NULL; |
| 767 | int ret = 0; |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 768 | int idx; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 769 | |
| 770 | memset(&hk, 0, sizeof(hk)); |
| 771 | |
| 772 | switch (key->alg) { |
| 773 | case ALG_WEP: |
| 774 | hk.kv_type = ATH9K_CIPHER_WEP; |
| 775 | break; |
| 776 | case ALG_TKIP: |
| 777 | hk.kv_type = ATH9K_CIPHER_TKIP; |
| 778 | break; |
| 779 | case ALG_CCMP: |
| 780 | hk.kv_type = ATH9K_CIPHER_AES_CCM; |
| 781 | break; |
| 782 | default: |
Jouni Malinen | ca470b2 | 2009-01-08 13:32:12 +0200 | [diff] [blame] | 783 | return -EOPNOTSUPP; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 784 | } |
| 785 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 786 | hk.kv_len = key->keylen; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 787 | memcpy(hk.kv_val, key->key, key->keylen); |
| 788 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 789 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
| 790 | /* For now, use the default keys for broadcast keys. This may |
| 791 | * need to change with virtual interfaces. */ |
| 792 | idx = key->keyidx; |
| 793 | } else if (key->keyidx) { |
| 794 | struct ieee80211_vif *vif; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 795 | |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 796 | if (WARN_ON(!sta)) |
| 797 | return -EOPNOTSUPP; |
| 798 | mac = sta->addr; |
| 799 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 800 | vif = sc->sc_vaps[0]; |
| 801 | if (vif->type != NL80211_IFTYPE_AP) { |
| 802 | /* Only keyidx 0 should be used with unicast key, but |
| 803 | * allow this for client mode for now. */ |
| 804 | idx = key->keyidx; |
| 805 | } else |
| 806 | return -EIO; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 807 | } else { |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 808 | if (WARN_ON(!sta)) |
| 809 | return -EOPNOTSUPP; |
| 810 | mac = sta->addr; |
| 811 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 812 | if (key->alg == ALG_TKIP) |
| 813 | idx = ath_reserve_key_cache_slot_tkip(sc); |
| 814 | else |
| 815 | idx = ath_reserve_key_cache_slot(sc); |
| 816 | if (idx < 0) |
Jouni Malinen | ca470b2 | 2009-01-08 13:32:12 +0200 | [diff] [blame] | 817 | return -ENOSPC; /* no free key cache entries */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | if (key->alg == ALG_TKIP) |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 821 | ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 822 | else |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 823 | ret = ath_keyset(sc, idx, &hk, mac); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 824 | |
| 825 | if (!ret) |
| 826 | return -EIO; |
| 827 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 828 | set_bit(idx, sc->sc_keymap); |
| 829 | if (key->alg == ALG_TKIP) { |
| 830 | set_bit(idx + 64, sc->sc_keymap); |
| 831 | if (sc->sc_splitmic) { |
| 832 | set_bit(idx + 32, sc->sc_keymap); |
| 833 | set_bit(idx + 64 + 32, sc->sc_keymap); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | return idx; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key) |
| 841 | { |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 842 | ath9k_hw_keyreset(sc->sc_ah, key->hw_key_idx); |
| 843 | if (key->hw_key_idx < IEEE80211_WEP_NKID) |
| 844 | return; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 845 | |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 846 | clear_bit(key->hw_key_idx, sc->sc_keymap); |
| 847 | if (key->alg != ALG_TKIP) |
| 848 | return; |
| 849 | |
| 850 | clear_bit(key->hw_key_idx + 64, sc->sc_keymap); |
| 851 | if (sc->sc_splitmic) { |
| 852 | clear_bit(key->hw_key_idx + 32, sc->sc_keymap); |
| 853 | clear_bit(key->hw_key_idx + 64 + 32, sc->sc_keymap); |
| 854 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 855 | } |
| 856 | |
Sujith | eb2599c | 2009-01-23 11:20:44 +0530 | [diff] [blame] | 857 | static void setup_ht_cap(struct ath_softc *sc, |
| 858 | struct ieee80211_sta_ht_cap *ht_info) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 859 | { |
Sujith | 6065367 | 2008-08-14 13:28:02 +0530 | [diff] [blame] | 860 | #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */ |
| 861 | #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 862 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 863 | ht_info->ht_supported = true; |
| 864 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
| 865 | IEEE80211_HT_CAP_SM_PS | |
| 866 | IEEE80211_HT_CAP_SGI_40 | |
| 867 | IEEE80211_HT_CAP_DSSSCCK40; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 868 | |
Sujith | 6065367 | 2008-08-14 13:28:02 +0530 | [diff] [blame] | 869 | ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536; |
| 870 | ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8; |
Sujith | eb2599c | 2009-01-23 11:20:44 +0530 | [diff] [blame] | 871 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 872 | /* set up supported mcs set */ |
| 873 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
Sujith | eb2599c | 2009-01-23 11:20:44 +0530 | [diff] [blame] | 874 | |
| 875 | switch(sc->sc_rx_chainmask) { |
| 876 | case 1: |
| 877 | ht_info->mcs.rx_mask[0] = 0xff; |
| 878 | break; |
| 879 | case 5: |
| 880 | case 7: |
| 881 | default: |
| 882 | ht_info->mcs.rx_mask[0] = 0xff; |
| 883 | ht_info->mcs.rx_mask[1] = 0xff; |
| 884 | break; |
| 885 | } |
| 886 | |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 887 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 888 | } |
| 889 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 890 | static void ath9k_bss_assoc_info(struct ath_softc *sc, |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 891 | struct ieee80211_vif *vif, |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 892 | struct ieee80211_bss_conf *bss_conf) |
| 893 | { |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 894 | struct ath_vap *avp = (void *)vif->drv_priv; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 895 | |
| 896 | if (bss_conf->assoc) { |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 897 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info ASSOC %d, bssid: %pM\n", |
| 898 | bss_conf->aid, sc->sc_curbssid); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 899 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 900 | /* New association, store aid */ |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 901 | if (avp->av_opmode == NL80211_IFTYPE_STATION) { |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 902 | sc->sc_curaid = bss_conf->aid; |
| 903 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, |
| 904 | sc->sc_curaid); |
| 905 | } |
| 906 | |
| 907 | /* Configure the beacon */ |
| 908 | ath_beacon_config(sc, 0); |
| 909 | sc->sc_flags |= SC_OP_BEACONS; |
| 910 | |
| 911 | /* Reset rssi stats */ |
| 912 | sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER; |
| 913 | sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER; |
| 914 | sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER; |
| 915 | sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER; |
| 916 | |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 917 | /* Start ANI */ |
| 918 | mod_timer(&sc->sc_ani.timer, |
| 919 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
| 920 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 921 | } else { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 922 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISSOC\n"); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 923 | sc->sc_curaid = 0; |
| 924 | } |
| 925 | } |
| 926 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 927 | /********************************/ |
| 928 | /* LED functions */ |
| 929 | /********************************/ |
| 930 | |
| 931 | static void ath_led_brightness(struct led_classdev *led_cdev, |
| 932 | enum led_brightness brightness) |
| 933 | { |
| 934 | struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); |
| 935 | struct ath_softc *sc = led->sc; |
| 936 | |
| 937 | switch (brightness) { |
| 938 | case LED_OFF: |
| 939 | if (led->led_type == ATH_LED_ASSOC || |
| 940 | led->led_type == ATH_LED_RADIO) |
| 941 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; |
| 942 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, |
| 943 | (led->led_type == ATH_LED_RADIO) ? 1 : |
| 944 | !!(sc->sc_flags & SC_OP_LED_ASSOCIATED)); |
| 945 | break; |
| 946 | case LED_FULL: |
| 947 | if (led->led_type == ATH_LED_ASSOC) |
| 948 | sc->sc_flags |= SC_OP_LED_ASSOCIATED; |
| 949 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0); |
| 950 | break; |
| 951 | default: |
| 952 | break; |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | static int ath_register_led(struct ath_softc *sc, struct ath_led *led, |
| 957 | char *trigger) |
| 958 | { |
| 959 | int ret; |
| 960 | |
| 961 | led->sc = sc; |
| 962 | led->led_cdev.name = led->name; |
| 963 | led->led_cdev.default_trigger = trigger; |
| 964 | led->led_cdev.brightness_set = ath_led_brightness; |
| 965 | |
| 966 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); |
| 967 | if (ret) |
| 968 | DPRINTF(sc, ATH_DBG_FATAL, |
| 969 | "Failed to register led:%s", led->name); |
| 970 | else |
| 971 | led->registered = 1; |
| 972 | return ret; |
| 973 | } |
| 974 | |
| 975 | static void ath_unregister_led(struct ath_led *led) |
| 976 | { |
| 977 | if (led->registered) { |
| 978 | led_classdev_unregister(&led->led_cdev); |
| 979 | led->registered = 0; |
| 980 | } |
| 981 | } |
| 982 | |
| 983 | static void ath_deinit_leds(struct ath_softc *sc) |
| 984 | { |
| 985 | ath_unregister_led(&sc->assoc_led); |
| 986 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; |
| 987 | ath_unregister_led(&sc->tx_led); |
| 988 | ath_unregister_led(&sc->rx_led); |
| 989 | ath_unregister_led(&sc->radio_led); |
| 990 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
| 991 | } |
| 992 | |
| 993 | static void ath_init_leds(struct ath_softc *sc) |
| 994 | { |
| 995 | char *trigger; |
| 996 | int ret; |
| 997 | |
| 998 | /* Configure gpio 1 for output */ |
| 999 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, |
| 1000 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 1001 | /* LED off, active low */ |
| 1002 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); |
| 1003 | |
| 1004 | trigger = ieee80211_get_radio_led_name(sc->hw); |
| 1005 | snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), |
| 1006 | "ath9k-%s:radio", wiphy_name(sc->hw->wiphy)); |
| 1007 | ret = ath_register_led(sc, &sc->radio_led, trigger); |
| 1008 | sc->radio_led.led_type = ATH_LED_RADIO; |
| 1009 | if (ret) |
| 1010 | goto fail; |
| 1011 | |
| 1012 | trigger = ieee80211_get_assoc_led_name(sc->hw); |
| 1013 | snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), |
| 1014 | "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy)); |
| 1015 | ret = ath_register_led(sc, &sc->assoc_led, trigger); |
| 1016 | sc->assoc_led.led_type = ATH_LED_ASSOC; |
| 1017 | if (ret) |
| 1018 | goto fail; |
| 1019 | |
| 1020 | trigger = ieee80211_get_tx_led_name(sc->hw); |
| 1021 | snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), |
| 1022 | "ath9k-%s:tx", wiphy_name(sc->hw->wiphy)); |
| 1023 | ret = ath_register_led(sc, &sc->tx_led, trigger); |
| 1024 | sc->tx_led.led_type = ATH_LED_TX; |
| 1025 | if (ret) |
| 1026 | goto fail; |
| 1027 | |
| 1028 | trigger = ieee80211_get_rx_led_name(sc->hw); |
| 1029 | snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), |
| 1030 | "ath9k-%s:rx", wiphy_name(sc->hw->wiphy)); |
| 1031 | ret = ath_register_led(sc, &sc->rx_led, trigger); |
| 1032 | sc->rx_led.led_type = ATH_LED_RX; |
| 1033 | if (ret) |
| 1034 | goto fail; |
| 1035 | |
| 1036 | return; |
| 1037 | |
| 1038 | fail: |
| 1039 | ath_deinit_leds(sc); |
| 1040 | } |
| 1041 | |
Senthil Balasubramanian | e97275c | 2008-11-13 18:00:02 +0530 | [diff] [blame] | 1042 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1043 | |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1044 | /*******************/ |
| 1045 | /* Rfkill */ |
| 1046 | /*******************/ |
| 1047 | |
| 1048 | static void ath_radio_enable(struct ath_softc *sc) |
| 1049 | { |
| 1050 | struct ath_hal *ah = sc->sc_ah; |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1051 | struct ieee80211_channel *channel = sc->hw->conf.channel; |
| 1052 | int r; |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1053 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1054 | ath9k_ps_wakeup(sc); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1055 | spin_lock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1056 | |
| 1057 | r = ath9k_hw_reset(ah, ah->ah_curchan, false); |
| 1058 | |
| 1059 | if (r) { |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1060 | DPRINTF(sc, ATH_DBG_FATAL, |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1061 | "Unable to reset channel %u (%uMhz) ", |
| 1062 | "reset status %u\n", |
| 1063 | channel->center_freq, r); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1064 | } |
| 1065 | spin_unlock_bh(&sc->sc_resetlock); |
| 1066 | |
| 1067 | ath_update_txpow(sc); |
| 1068 | if (ath_startrecv(sc) != 0) { |
| 1069 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1070 | "Unable to restart recv logic\n"); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1071 | return; |
| 1072 | } |
| 1073 | |
| 1074 | if (sc->sc_flags & SC_OP_BEACONS) |
| 1075 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ |
| 1076 | |
| 1077 | /* Re-Enable interrupts */ |
| 1078 | ath9k_hw_set_interrupts(ah, sc->sc_imask); |
| 1079 | |
| 1080 | /* Enable LED */ |
| 1081 | ath9k_hw_cfg_output(ah, ATH_LED_PIN, |
| 1082 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 1083 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0); |
| 1084 | |
| 1085 | ieee80211_wake_queues(sc->hw); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1086 | ath9k_ps_restore(sc); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1087 | } |
| 1088 | |
| 1089 | static void ath_radio_disable(struct ath_softc *sc) |
| 1090 | { |
| 1091 | struct ath_hal *ah = sc->sc_ah; |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1092 | struct ieee80211_channel *channel = sc->hw->conf.channel; |
| 1093 | int r; |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1094 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1095 | ath9k_ps_wakeup(sc); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1096 | ieee80211_stop_queues(sc->hw); |
| 1097 | |
| 1098 | /* Disable LED */ |
| 1099 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1); |
| 1100 | ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN); |
| 1101 | |
| 1102 | /* Disable interrupts */ |
| 1103 | ath9k_hw_set_interrupts(ah, 0); |
| 1104 | |
Sujith | 043a040 | 2009-01-16 21:38:47 +0530 | [diff] [blame] | 1105 | ath_drain_all_txq(sc, false); /* clear pending tx frames */ |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1106 | ath_stoprecv(sc); /* turn off frame recv */ |
| 1107 | ath_flushrecv(sc); /* flush recv queue */ |
| 1108 | |
| 1109 | spin_lock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1110 | r = ath9k_hw_reset(ah, ah->ah_curchan, false); |
| 1111 | if (r) { |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1112 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1113 | "Unable to reset channel %u (%uMhz) " |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1114 | "reset status %u\n", |
| 1115 | channel->center_freq, r); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1116 | } |
| 1117 | spin_unlock_bh(&sc->sc_resetlock); |
| 1118 | |
| 1119 | ath9k_hw_phy_disable(ah); |
| 1120 | ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1121 | ath9k_ps_restore(sc); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | static bool ath_is_rfkill_set(struct ath_softc *sc) |
| 1125 | { |
| 1126 | struct ath_hal *ah = sc->sc_ah; |
| 1127 | |
| 1128 | return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) == |
| 1129 | ah->ah_rfkill_polarity; |
| 1130 | } |
| 1131 | |
| 1132 | /* h/w rfkill poll function */ |
| 1133 | static void ath_rfkill_poll(struct work_struct *work) |
| 1134 | { |
| 1135 | struct ath_softc *sc = container_of(work, struct ath_softc, |
| 1136 | rf_kill.rfkill_poll.work); |
| 1137 | bool radio_on; |
| 1138 | |
| 1139 | if (sc->sc_flags & SC_OP_INVALID) |
| 1140 | return; |
| 1141 | |
| 1142 | radio_on = !ath_is_rfkill_set(sc); |
| 1143 | |
| 1144 | /* |
| 1145 | * enable/disable radio only when there is a |
| 1146 | * state change in RF switch |
| 1147 | */ |
| 1148 | if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) { |
| 1149 | enum rfkill_state state; |
| 1150 | |
| 1151 | if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) { |
| 1152 | state = radio_on ? RFKILL_STATE_SOFT_BLOCKED |
| 1153 | : RFKILL_STATE_HARD_BLOCKED; |
| 1154 | } else if (radio_on) { |
| 1155 | ath_radio_enable(sc); |
| 1156 | state = RFKILL_STATE_UNBLOCKED; |
| 1157 | } else { |
| 1158 | ath_radio_disable(sc); |
| 1159 | state = RFKILL_STATE_HARD_BLOCKED; |
| 1160 | } |
| 1161 | |
| 1162 | if (state == RFKILL_STATE_HARD_BLOCKED) |
| 1163 | sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED; |
| 1164 | else |
| 1165 | sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED; |
| 1166 | |
| 1167 | rfkill_force_state(sc->rf_kill.rfkill, state); |
| 1168 | } |
| 1169 | |
| 1170 | queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll, |
| 1171 | msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL)); |
| 1172 | } |
| 1173 | |
| 1174 | /* s/w rfkill handler */ |
| 1175 | static int ath_sw_toggle_radio(void *data, enum rfkill_state state) |
| 1176 | { |
| 1177 | struct ath_softc *sc = data; |
| 1178 | |
| 1179 | switch (state) { |
| 1180 | case RFKILL_STATE_SOFT_BLOCKED: |
| 1181 | if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED | |
| 1182 | SC_OP_RFKILL_SW_BLOCKED))) |
| 1183 | ath_radio_disable(sc); |
| 1184 | sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED; |
| 1185 | return 0; |
| 1186 | case RFKILL_STATE_UNBLOCKED: |
| 1187 | if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) { |
| 1188 | sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED; |
| 1189 | if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) { |
| 1190 | DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the" |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1191 | "radio as it is disabled by h/w\n"); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1192 | return -EPERM; |
| 1193 | } |
| 1194 | ath_radio_enable(sc); |
| 1195 | } |
| 1196 | return 0; |
| 1197 | default: |
| 1198 | return -EINVAL; |
| 1199 | } |
| 1200 | } |
| 1201 | |
| 1202 | /* Init s/w rfkill */ |
| 1203 | static int ath_init_sw_rfkill(struct ath_softc *sc) |
| 1204 | { |
| 1205 | sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy), |
| 1206 | RFKILL_TYPE_WLAN); |
| 1207 | if (!sc->rf_kill.rfkill) { |
| 1208 | DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n"); |
| 1209 | return -ENOMEM; |
| 1210 | } |
| 1211 | |
| 1212 | snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), |
| 1213 | "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy)); |
| 1214 | sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name; |
| 1215 | sc->rf_kill.rfkill->data = sc; |
| 1216 | sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; |
| 1217 | sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; |
| 1218 | sc->rf_kill.rfkill->user_claim_unsupported = 1; |
| 1219 | |
| 1220 | return 0; |
| 1221 | } |
| 1222 | |
| 1223 | /* Deinitialize rfkill */ |
| 1224 | static void ath_deinit_rfkill(struct ath_softc *sc) |
| 1225 | { |
| 1226 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1227 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
| 1228 | |
| 1229 | if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) { |
| 1230 | rfkill_unregister(sc->rf_kill.rfkill); |
| 1231 | sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED; |
| 1232 | sc->rf_kill.rfkill = NULL; |
| 1233 | } |
| 1234 | } |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1235 | |
| 1236 | static int ath_start_rfkill_poll(struct ath_softc *sc) |
| 1237 | { |
| 1238 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1239 | queue_delayed_work(sc->hw->workqueue, |
| 1240 | &sc->rf_kill.rfkill_poll, 0); |
| 1241 | |
| 1242 | if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) { |
| 1243 | if (rfkill_register(sc->rf_kill.rfkill)) { |
| 1244 | DPRINTF(sc, ATH_DBG_FATAL, |
| 1245 | "Unable to register rfkill\n"); |
| 1246 | rfkill_free(sc->rf_kill.rfkill); |
| 1247 | |
| 1248 | /* Deinitialize the device */ |
Gabor Juhos | 39c3c2f | 2009-01-14 20:17:05 +0100 | [diff] [blame] | 1249 | ath_cleanup(sc); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1250 | return -EIO; |
| 1251 | } else { |
| 1252 | sc->sc_flags |= SC_OP_RFKILL_REGISTERED; |
| 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | return 0; |
| 1257 | } |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1258 | #endif /* CONFIG_RFKILL */ |
| 1259 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1260 | void ath_cleanup(struct ath_softc *sc) |
Gabor Juhos | 39c3c2f | 2009-01-14 20:17:05 +0100 | [diff] [blame] | 1261 | { |
| 1262 | ath_detach(sc); |
| 1263 | free_irq(sc->irq, sc); |
| 1264 | ath_bus_cleanup(sc); |
| 1265 | ieee80211_free_hw(sc->hw); |
| 1266 | } |
| 1267 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1268 | void ath_detach(struct ath_softc *sc) |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1269 | { |
| 1270 | struct ieee80211_hw *hw = sc->hw; |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1271 | int i = 0; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1272 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1273 | ath9k_ps_wakeup(sc); |
| 1274 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1275 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n"); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1276 | |
Senthil Balasubramanian | e97275c | 2008-11-13 18:00:02 +0530 | [diff] [blame] | 1277 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1278 | ath_deinit_rfkill(sc); |
| 1279 | #endif |
Vasanthakumar Thiagarajan | 3fcdfb4 | 2008-11-18 01:19:56 +0530 | [diff] [blame] | 1280 | ath_deinit_leds(sc); |
| 1281 | |
| 1282 | ieee80211_unregister_hw(hw); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1283 | ath_rx_cleanup(sc); |
| 1284 | ath_tx_cleanup(sc); |
| 1285 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1286 | tasklet_kill(&sc->intr_tq); |
| 1287 | tasklet_kill(&sc->bcon_tasklet); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1288 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1289 | if (!(sc->sc_flags & SC_OP_INVALID)) |
| 1290 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1291 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1292 | /* cleanup tx queues */ |
| 1293 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
| 1294 | if (ATH_TXQ_SETUP(sc, i)) |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1295 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1296 | |
| 1297 | ath9k_hw_detach(sc->sc_ah); |
Sujith | 826d268 | 2008-11-28 22:20:23 +0530 | [diff] [blame] | 1298 | ath9k_exit_debug(sc); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1299 | ath9k_ps_restore(sc); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1300 | } |
| 1301 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1302 | static int ath_init(u16 devid, struct ath_softc *sc) |
| 1303 | { |
| 1304 | struct ath_hal *ah = NULL; |
| 1305 | int status; |
| 1306 | int error = 0, i; |
| 1307 | int csz = 0; |
| 1308 | |
| 1309 | /* XXX: hardware will not be ready until ath_open() being called */ |
| 1310 | sc->sc_flags |= SC_OP_INVALID; |
Sujith | 88b126a | 2008-11-28 22:19:02 +0530 | [diff] [blame] | 1311 | |
Sujith | 826d268 | 2008-11-28 22:20:23 +0530 | [diff] [blame] | 1312 | if (ath9k_init_debug(sc) < 0) |
| 1313 | printk(KERN_ERR "Unable to create debugfs files\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1314 | |
| 1315 | spin_lock_init(&sc->sc_resetlock); |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 1316 | mutex_init(&sc->mutex); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1317 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); |
| 1318 | tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, |
| 1319 | (unsigned long)sc); |
| 1320 | |
| 1321 | /* |
| 1322 | * Cache line size is used to size and align various |
| 1323 | * structures used to communicate with the hardware. |
| 1324 | */ |
Gabor Juhos | 88d1570 | 2009-01-14 20:17:04 +0100 | [diff] [blame] | 1325 | ath_read_cachesize(sc, &csz); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1326 | /* XXX assert csz is non-zero */ |
| 1327 | sc->sc_cachelsz = csz << 2; /* convert to bytes */ |
| 1328 | |
| 1329 | ah = ath9k_hw_attach(devid, sc, sc->mem, &status); |
| 1330 | if (ah == NULL) { |
| 1331 | DPRINTF(sc, ATH_DBG_FATAL, |
Gabor Juhos | 295834f | 2008-12-29 21:07:42 +0100 | [diff] [blame] | 1332 | "Unable to attach hardware; HAL status %d\n", status); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1333 | error = -ENXIO; |
| 1334 | goto bad; |
| 1335 | } |
| 1336 | sc->sc_ah = ah; |
| 1337 | |
| 1338 | /* Get the hardware key cache size. */ |
| 1339 | sc->sc_keymax = ah->ah_caps.keycache_size; |
| 1340 | if (sc->sc_keymax > ATH_KEYMAX) { |
| 1341 | DPRINTF(sc, ATH_DBG_KEYCACHE, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1342 | "Warning, using only %u entries in %u key cache\n", |
| 1343 | ATH_KEYMAX, sc->sc_keymax); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1344 | sc->sc_keymax = ATH_KEYMAX; |
| 1345 | } |
| 1346 | |
| 1347 | /* |
| 1348 | * Reset the key cache since some parts do not |
| 1349 | * reset the contents on initial power up. |
| 1350 | */ |
| 1351 | for (i = 0; i < sc->sc_keymax; i++) |
| 1352 | ath9k_hw_keyreset(ah, (u16) i); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1353 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1354 | if (ath9k_regd_init(sc->sc_ah)) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1355 | goto bad; |
| 1356 | |
| 1357 | /* default to MONITOR mode */ |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 1358 | sc->sc_ah->ah_opmode = NL80211_IFTYPE_MONITOR; |
| 1359 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1360 | /* Setup rate tables */ |
| 1361 | |
| 1362 | ath_rate_attach(sc); |
| 1363 | ath_setup_rates(sc, IEEE80211_BAND_2GHZ); |
| 1364 | ath_setup_rates(sc, IEEE80211_BAND_5GHZ); |
| 1365 | |
| 1366 | /* |
| 1367 | * Allocate hardware transmit queues: one queue for |
| 1368 | * beacon frames and one data queue for each QoS |
| 1369 | * priority. Note that the hal handles reseting |
| 1370 | * these queues at the needed time. |
| 1371 | */ |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1372 | sc->beacon.beaconq = ath_beaconq_setup(ah); |
| 1373 | if (sc->beacon.beaconq == -1) { |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1374 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1375 | "Unable to setup a beacon xmit queue\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1376 | error = -EIO; |
| 1377 | goto bad2; |
| 1378 | } |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1379 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
| 1380 | if (sc->beacon.cabq == NULL) { |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1381 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1382 | "Unable to setup CAB xmit queue\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1383 | error = -EIO; |
| 1384 | goto bad2; |
| 1385 | } |
| 1386 | |
| 1387 | sc->sc_config.cabqReadytime = ATH_CABQ_READY_TIME; |
| 1388 | ath_cabq_update(sc); |
| 1389 | |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1390 | for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++) |
| 1391 | sc->tx.hwq_map[i] = -1; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1392 | |
| 1393 | /* Setup data queues */ |
| 1394 | /* NB: ensure BK queue is the lowest priority h/w queue */ |
| 1395 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) { |
| 1396 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1397 | "Unable to setup xmit queue for BK traffic\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1398 | error = -EIO; |
| 1399 | goto bad2; |
| 1400 | } |
| 1401 | |
| 1402 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) { |
| 1403 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1404 | "Unable to setup xmit queue for BE traffic\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1405 | error = -EIO; |
| 1406 | goto bad2; |
| 1407 | } |
| 1408 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) { |
| 1409 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1410 | "Unable to setup xmit queue for VI traffic\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1411 | error = -EIO; |
| 1412 | goto bad2; |
| 1413 | } |
| 1414 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) { |
| 1415 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1416 | "Unable to setup xmit queue for VO traffic\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1417 | error = -EIO; |
| 1418 | goto bad2; |
| 1419 | } |
| 1420 | |
| 1421 | /* Initializes the noise floor to a reasonable default value. |
| 1422 | * Later on this will be updated during ANI processing. */ |
| 1423 | |
| 1424 | sc->sc_ani.sc_noise_floor = ATH_DEFAULT_NOISE_FLOOR; |
| 1425 | setup_timer(&sc->sc_ani.timer, ath_ani_calibrate, (unsigned long)sc); |
| 1426 | |
| 1427 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, |
| 1428 | ATH9K_CIPHER_TKIP, NULL)) { |
| 1429 | /* |
| 1430 | * Whether we should enable h/w TKIP MIC. |
| 1431 | * XXX: if we don't support WME TKIP MIC, then we wouldn't |
| 1432 | * report WMM capable, so it's always safe to turn on |
| 1433 | * TKIP MIC in this case. |
| 1434 | */ |
| 1435 | ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC, |
| 1436 | 0, 1, NULL); |
| 1437 | } |
| 1438 | |
| 1439 | /* |
| 1440 | * Check whether the separate key cache entries |
| 1441 | * are required to handle both tx+rx MIC keys. |
| 1442 | * With split mic keys the number of stations is limited |
| 1443 | * to 27 otherwise 59. |
| 1444 | */ |
| 1445 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, |
| 1446 | ATH9K_CIPHER_TKIP, NULL) |
| 1447 | && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, |
| 1448 | ATH9K_CIPHER_MIC, NULL) |
| 1449 | && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT, |
| 1450 | 0, NULL)) |
| 1451 | sc->sc_splitmic = 1; |
| 1452 | |
| 1453 | /* turn on mcast key search if possible */ |
| 1454 | if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL)) |
| 1455 | (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1, |
| 1456 | 1, NULL); |
| 1457 | |
| 1458 | sc->sc_config.txpowlimit = ATH_TXPOWER_MAX; |
| 1459 | sc->sc_config.txpowlimit_override = 0; |
| 1460 | |
| 1461 | /* 11n Capabilities */ |
| 1462 | if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) { |
| 1463 | sc->sc_flags |= SC_OP_TXAGGR; |
| 1464 | sc->sc_flags |= SC_OP_RXAGGR; |
| 1465 | } |
| 1466 | |
| 1467 | sc->sc_tx_chainmask = ah->ah_caps.tx_chainmask; |
| 1468 | sc->sc_rx_chainmask = ah->ah_caps.rx_chainmask; |
| 1469 | |
| 1470 | ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL); |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1471 | sc->rx.defant = ath9k_hw_getdefantenna(ah); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1472 | |
| 1473 | ath9k_hw_getmac(ah, sc->sc_myaddr); |
| 1474 | if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) { |
| 1475 | ath9k_hw_getbssidmask(ah, sc->sc_bssidmask); |
| 1476 | ATH_SET_VAP_BSSID_MASK(sc->sc_bssidmask); |
| 1477 | ath9k_hw_setbssidmask(ah, sc->sc_bssidmask); |
| 1478 | } |
| 1479 | |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1480 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */ |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1481 | |
| 1482 | /* initialize beacon slots */ |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1483 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) |
| 1484 | sc->beacon.bslot[i] = ATH_IF_ID_ANY; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1485 | |
| 1486 | /* save MISC configurations */ |
| 1487 | sc->sc_config.swBeaconProcess = 1; |
| 1488 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1489 | /* setup channels and rates */ |
| 1490 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1491 | sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1492 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = |
| 1493 | sc->rates[IEEE80211_BAND_2GHZ]; |
| 1494 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1495 | sc->sbands[IEEE80211_BAND_2GHZ].n_channels = |
| 1496 | ARRAY_SIZE(ath9k_2ghz_chantable); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1497 | |
| 1498 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) { |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1499 | sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1500 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = |
| 1501 | sc->rates[IEEE80211_BAND_5GHZ]; |
| 1502 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1503 | sc->sbands[IEEE80211_BAND_5GHZ].n_channels = |
| 1504 | ARRAY_SIZE(ath9k_5ghz_chantable); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1505 | } |
| 1506 | |
Vasanthakumar Thiagarajan | c97c92d | 2009-01-02 15:35:46 +0530 | [diff] [blame] | 1507 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_BT_COEX) |
| 1508 | ath9k_hw_btcoex_enable(sc->sc_ah); |
| 1509 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1510 | return 0; |
| 1511 | bad2: |
| 1512 | /* cleanup tx queues */ |
| 1513 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
| 1514 | if (ATH_TXQ_SETUP(sc, i)) |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1515 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1516 | bad: |
| 1517 | if (ah) |
| 1518 | ath9k_hw_detach(ah); |
| 1519 | |
| 1520 | return error; |
| 1521 | } |
| 1522 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1523 | int ath_attach(u16 devid, struct ath_softc *sc) |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1524 | { |
| 1525 | struct ieee80211_hw *hw = sc->hw; |
| 1526 | int error = 0; |
| 1527 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1528 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n"); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1529 | |
| 1530 | error = ath_init(devid, sc); |
| 1531 | if (error != 0) |
| 1532 | return error; |
| 1533 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1534 | /* get mac address from hardware and set in mac80211 */ |
| 1535 | |
| 1536 | SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr); |
| 1537 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1538 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
| 1539 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | |
| 1540 | IEEE80211_HW_SIGNAL_DBM | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1541 | IEEE80211_HW_AMPDU_AGGREGATION | |
| 1542 | IEEE80211_HW_SUPPORTS_PS | |
| 1543 | IEEE80211_HW_PS_NULLFUNC_STACK; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1544 | |
Jouni Malinen | 0ced0e1 | 2009-01-08 13:32:13 +0200 | [diff] [blame] | 1545 | if (AR_SREV_9160_10_OR_LATER(sc->sc_ah)) |
| 1546 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; |
| 1547 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1548 | hw->wiphy->interface_modes = |
| 1549 | BIT(NL80211_IFTYPE_AP) | |
| 1550 | BIT(NL80211_IFTYPE_STATION) | |
| 1551 | BIT(NL80211_IFTYPE_ADHOC); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1552 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1553 | hw->wiphy->reg_notifier = ath9k_reg_notifier; |
| 1554 | hw->wiphy->strict_regulatory = true; |
| 1555 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1556 | hw->queues = 4; |
Sujith | e63835b | 2008-11-18 09:07:53 +0530 | [diff] [blame] | 1557 | hw->max_rates = 4; |
| 1558 | hw->max_rate_tries = ATH_11N_TXMAXTRY; |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 1559 | hw->sta_data_size = sizeof(struct ath_node); |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 1560 | hw->vif_data_size = sizeof(struct ath_vap); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1561 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1562 | hw->rate_control_algorithm = "ath9k_rate_control"; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1563 | |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1564 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) { |
Sujith | eb2599c | 2009-01-23 11:20:44 +0530 | [diff] [blame] | 1565 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1566 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) |
Sujith | eb2599c | 2009-01-23 11:20:44 +0530 | [diff] [blame] | 1567 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 1568 | } |
| 1569 | |
| 1570 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ]; |
| 1571 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) |
| 1572 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 1573 | &sc->sbands[IEEE80211_BAND_5GHZ]; |
| 1574 | |
Senthil Balasubramanian | db93e7b | 2008-11-13 18:01:08 +0530 | [diff] [blame] | 1575 | /* initialize tx/rx engine */ |
| 1576 | error = ath_tx_init(sc, ATH_TXBUF); |
| 1577 | if (error != 0) |
| 1578 | goto detach; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1579 | |
Senthil Balasubramanian | db93e7b | 2008-11-13 18:01:08 +0530 | [diff] [blame] | 1580 | error = ath_rx_init(sc, ATH_RXBUF); |
| 1581 | if (error != 0) |
| 1582 | goto detach; |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1583 | |
Senthil Balasubramanian | e97275c | 2008-11-13 18:00:02 +0530 | [diff] [blame] | 1584 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1585 | /* Initialze h/w Rfkill */ |
| 1586 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 1587 | INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); |
| 1588 | |
| 1589 | /* Initialize s/w rfkill */ |
| 1590 | if (ath_init_sw_rfkill(sc)) |
| 1591 | goto detach; |
| 1592 | #endif |
| 1593 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1594 | if (ath9k_is_world_regd(sc->sc_ah)) { |
| 1595 | /* Anything applied here (prior to wiphy registratoin) gets |
| 1596 | * saved on the wiphy orig_* parameters */ |
| 1597 | const struct ieee80211_regdomain *regd = |
| 1598 | ath9k_world_regdomain(sc->sc_ah); |
| 1599 | hw->wiphy->custom_regulatory = true; |
| 1600 | hw->wiphy->strict_regulatory = false; |
| 1601 | wiphy_apply_custom_regulatory(sc->hw->wiphy, regd); |
| 1602 | ath9k_reg_apply_radar_flags(hw->wiphy); |
| 1603 | ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT); |
| 1604 | } else { |
| 1605 | /* This gets applied in the case of the absense of CRDA, |
| 1606 | * its our own custom world regulatory domain, similar to |
| 1607 | * cfg80211's but we enable passive scanning */ |
| 1608 | const struct ieee80211_regdomain *regd = |
| 1609 | ath9k_default_world_regdomain(); |
| 1610 | wiphy_apply_custom_regulatory(sc->hw->wiphy, regd); |
| 1611 | ath9k_reg_apply_radar_flags(hw->wiphy); |
| 1612 | ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT); |
| 1613 | } |
| 1614 | |
Senthil Balasubramanian | db93e7b | 2008-11-13 18:01:08 +0530 | [diff] [blame] | 1615 | error = ieee80211_register_hw(hw); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1616 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1617 | if (!ath9k_is_world_regd(sc->sc_ah)) |
| 1618 | regulatory_hint(hw->wiphy, sc->sc_ah->alpha2); |
| 1619 | |
Senthil Balasubramanian | db93e7b | 2008-11-13 18:01:08 +0530 | [diff] [blame] | 1620 | /* Initialize LED control */ |
| 1621 | ath_init_leds(sc); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1622 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1623 | |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1624 | return 0; |
| 1625 | detach: |
| 1626 | ath_detach(sc); |
Vasanthakumar Thiagarajan | 8feceb6 | 2008-09-10 18:49:27 +0530 | [diff] [blame] | 1627 | return error; |
| 1628 | } |
| 1629 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1630 | int ath_reset(struct ath_softc *sc, bool retry_tx) |
| 1631 | { |
| 1632 | struct ath_hal *ah = sc->sc_ah; |
Luis R. Rodriguez | 030bb49 | 2008-12-23 15:58:37 -0800 | [diff] [blame] | 1633 | struct ieee80211_hw *hw = sc->hw; |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1634 | int r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1635 | |
| 1636 | ath9k_hw_set_interrupts(ah, 0); |
Sujith | 043a040 | 2009-01-16 21:38:47 +0530 | [diff] [blame] | 1637 | ath_drain_all_txq(sc, retry_tx); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1638 | ath_stoprecv(sc); |
| 1639 | ath_flushrecv(sc); |
| 1640 | |
| 1641 | spin_lock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1642 | r = ath9k_hw_reset(ah, sc->sc_ah->ah_curchan, false); |
| 1643 | if (r) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1644 | DPRINTF(sc, ATH_DBG_FATAL, |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1645 | "Unable to reset hardware; reset status %u\n", r); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1646 | spin_unlock_bh(&sc->sc_resetlock); |
| 1647 | |
| 1648 | if (ath_startrecv(sc) != 0) |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1649 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1650 | |
| 1651 | /* |
| 1652 | * We may be doing a reset in response to a request |
| 1653 | * that changes the channel so update any state that |
| 1654 | * might change as a result. |
| 1655 | */ |
Luis R. Rodriguez | ce111ba | 2008-12-23 15:58:39 -0800 | [diff] [blame] | 1656 | ath_cache_conf_rate(sc, &hw->conf); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1657 | |
| 1658 | ath_update_txpow(sc); |
| 1659 | |
| 1660 | if (sc->sc_flags & SC_OP_BEACONS) |
| 1661 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ |
| 1662 | |
| 1663 | ath9k_hw_set_interrupts(ah, sc->sc_imask); |
| 1664 | |
| 1665 | if (retry_tx) { |
| 1666 | int i; |
| 1667 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { |
| 1668 | if (ATH_TXQ_SETUP(sc, i)) { |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1669 | spin_lock_bh(&sc->tx.txq[i].axq_lock); |
| 1670 | ath_txq_schedule(sc, &sc->tx.txq[i]); |
| 1671 | spin_unlock_bh(&sc->tx.txq[i].axq_lock); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1672 | } |
| 1673 | } |
| 1674 | } |
| 1675 | |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1676 | return r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1677 | } |
| 1678 | |
| 1679 | /* |
| 1680 | * This function will allocate both the DMA descriptor structure, and the |
| 1681 | * buffers it contains. These are used to contain the descriptors used |
| 1682 | * by the system. |
| 1683 | */ |
| 1684 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, |
| 1685 | struct list_head *head, const char *name, |
| 1686 | int nbuf, int ndesc) |
| 1687 | { |
| 1688 | #define DS2PHYS(_dd, _ds) \ |
| 1689 | ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) |
| 1690 | #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) |
| 1691 | #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) |
| 1692 | |
| 1693 | struct ath_desc *ds; |
| 1694 | struct ath_buf *bf; |
| 1695 | int i, bsize, error; |
| 1696 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1697 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", |
| 1698 | name, nbuf, ndesc); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1699 | |
| 1700 | /* ath_desc must be a multiple of DWORDs */ |
| 1701 | if ((sizeof(struct ath_desc) % 4) != 0) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1702 | DPRINTF(sc, ATH_DBG_FATAL, "ath_desc not DWORD aligned\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1703 | ASSERT((sizeof(struct ath_desc) % 4) == 0); |
| 1704 | error = -ENOMEM; |
| 1705 | goto fail; |
| 1706 | } |
| 1707 | |
| 1708 | dd->dd_name = name; |
| 1709 | dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc; |
| 1710 | |
| 1711 | /* |
| 1712 | * Need additional DMA memory because we can't use |
| 1713 | * descriptors that cross the 4K page boundary. Assume |
| 1714 | * one skipped descriptor per 4K page. |
| 1715 | */ |
| 1716 | if (!(sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { |
| 1717 | u32 ndesc_skipped = |
| 1718 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); |
| 1719 | u32 dma_len; |
| 1720 | |
| 1721 | while (ndesc_skipped) { |
| 1722 | dma_len = ndesc_skipped * sizeof(struct ath_desc); |
| 1723 | dd->dd_desc_len += dma_len; |
| 1724 | |
| 1725 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); |
| 1726 | }; |
| 1727 | } |
| 1728 | |
| 1729 | /* allocate descriptors */ |
Gabor Juhos | 7da3c55 | 2009-01-14 20:17:03 +0100 | [diff] [blame] | 1730 | dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, |
| 1731 | &dd->dd_desc_paddr, GFP_ATOMIC); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1732 | if (dd->dd_desc == NULL) { |
| 1733 | error = -ENOMEM; |
| 1734 | goto fail; |
| 1735 | } |
| 1736 | ds = dd->dd_desc; |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1737 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
| 1738 | dd->dd_name, ds, (u32) dd->dd_desc_len, |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1739 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); |
| 1740 | |
| 1741 | /* allocate buffers */ |
| 1742 | bsize = sizeof(struct ath_buf) * nbuf; |
| 1743 | bf = kmalloc(bsize, GFP_KERNEL); |
| 1744 | if (bf == NULL) { |
| 1745 | error = -ENOMEM; |
| 1746 | goto fail2; |
| 1747 | } |
| 1748 | memset(bf, 0, bsize); |
| 1749 | dd->dd_bufptr = bf; |
| 1750 | |
| 1751 | INIT_LIST_HEAD(head); |
| 1752 | for (i = 0; i < nbuf; i++, bf++, ds += ndesc) { |
| 1753 | bf->bf_desc = ds; |
| 1754 | bf->bf_daddr = DS2PHYS(dd, ds); |
| 1755 | |
| 1756 | if (!(sc->sc_ah->ah_caps.hw_caps & |
| 1757 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { |
| 1758 | /* |
| 1759 | * Skip descriptor addresses which can cause 4KB |
| 1760 | * boundary crossing (addr + length) with a 32 dword |
| 1761 | * descriptor fetch. |
| 1762 | */ |
| 1763 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { |
| 1764 | ASSERT((caddr_t) bf->bf_desc < |
| 1765 | ((caddr_t) dd->dd_desc + |
| 1766 | dd->dd_desc_len)); |
| 1767 | |
| 1768 | ds += ndesc; |
| 1769 | bf->bf_desc = ds; |
| 1770 | bf->bf_daddr = DS2PHYS(dd, ds); |
| 1771 | } |
| 1772 | } |
| 1773 | list_add_tail(&bf->list, head); |
| 1774 | } |
| 1775 | return 0; |
| 1776 | fail2: |
Gabor Juhos | 7da3c55 | 2009-01-14 20:17:03 +0100 | [diff] [blame] | 1777 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, |
| 1778 | dd->dd_desc_paddr); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1779 | fail: |
| 1780 | memset(dd, 0, sizeof(*dd)); |
| 1781 | return error; |
| 1782 | #undef ATH_DESC_4KB_BOUND_CHECK |
| 1783 | #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED |
| 1784 | #undef DS2PHYS |
| 1785 | } |
| 1786 | |
| 1787 | void ath_descdma_cleanup(struct ath_softc *sc, |
| 1788 | struct ath_descdma *dd, |
| 1789 | struct list_head *head) |
| 1790 | { |
Gabor Juhos | 7da3c55 | 2009-01-14 20:17:03 +0100 | [diff] [blame] | 1791 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, |
| 1792 | dd->dd_desc_paddr); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1793 | |
| 1794 | INIT_LIST_HEAD(head); |
| 1795 | kfree(dd->dd_bufptr); |
| 1796 | memset(dd, 0, sizeof(*dd)); |
| 1797 | } |
| 1798 | |
| 1799 | int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) |
| 1800 | { |
| 1801 | int qnum; |
| 1802 | |
| 1803 | switch (queue) { |
| 1804 | case 0: |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1805 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO]; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1806 | break; |
| 1807 | case 1: |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1808 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI]; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1809 | break; |
| 1810 | case 2: |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1811 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1812 | break; |
| 1813 | case 3: |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1814 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK]; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1815 | break; |
| 1816 | default: |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1817 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1818 | break; |
| 1819 | } |
| 1820 | |
| 1821 | return qnum; |
| 1822 | } |
| 1823 | |
| 1824 | int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) |
| 1825 | { |
| 1826 | int qnum; |
| 1827 | |
| 1828 | switch (queue) { |
| 1829 | case ATH9K_WME_AC_VO: |
| 1830 | qnum = 0; |
| 1831 | break; |
| 1832 | case ATH9K_WME_AC_VI: |
| 1833 | qnum = 1; |
| 1834 | break; |
| 1835 | case ATH9K_WME_AC_BE: |
| 1836 | qnum = 2; |
| 1837 | break; |
| 1838 | case ATH9K_WME_AC_BK: |
| 1839 | qnum = 3; |
| 1840 | break; |
| 1841 | default: |
| 1842 | qnum = -1; |
| 1843 | break; |
| 1844 | } |
| 1845 | |
| 1846 | return qnum; |
| 1847 | } |
| 1848 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1849 | /* XXX: Remove me once we don't depend on ath9k_channel for all |
| 1850 | * this redundant data */ |
| 1851 | static void ath9k_update_ichannel(struct ath_softc *sc, |
| 1852 | struct ath9k_channel *ichan) |
| 1853 | { |
| 1854 | struct ieee80211_hw *hw = sc->hw; |
| 1855 | struct ieee80211_channel *chan = hw->conf.channel; |
| 1856 | struct ieee80211_conf *conf = &hw->conf; |
| 1857 | |
| 1858 | ichan->channel = chan->center_freq; |
| 1859 | ichan->chan = chan; |
| 1860 | |
| 1861 | if (chan->band == IEEE80211_BAND_2GHZ) { |
| 1862 | ichan->chanmode = CHANNEL_G; |
| 1863 | ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM; |
| 1864 | } else { |
| 1865 | ichan->chanmode = CHANNEL_A; |
| 1866 | ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM; |
| 1867 | } |
| 1868 | |
| 1869 | sc->tx_chan_width = ATH9K_HT_MACMODE_20; |
| 1870 | |
| 1871 | if (conf_is_ht(conf)) { |
| 1872 | if (conf_is_ht40(conf)) |
| 1873 | sc->tx_chan_width = ATH9K_HT_MACMODE_2040; |
| 1874 | |
| 1875 | ichan->chanmode = ath_get_extchanmode(sc, chan, |
| 1876 | conf->channel_type); |
| 1877 | } |
| 1878 | } |
| 1879 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1880 | /**********************/ |
| 1881 | /* mac80211 callbacks */ |
| 1882 | /**********************/ |
| 1883 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1884 | static int ath9k_start(struct ieee80211_hw *hw) |
| 1885 | { |
| 1886 | struct ath_softc *sc = hw->priv; |
| 1887 | struct ieee80211_channel *curchan = hw->conf.channel; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1888 | struct ath9k_channel *init_channel; |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1889 | int r, pos; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1890 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1891 | DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with " |
| 1892 | "initial channel: %d MHz\n", curchan->center_freq); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1893 | |
| 1894 | /* setup initial channel */ |
| 1895 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1896 | pos = curchan->hw_value; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1897 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1898 | init_channel = &sc->sc_ah->ah_channels[pos]; |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1899 | ath9k_update_ichannel(sc, init_channel); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1900 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1901 | /* Reset SERDES registers */ |
| 1902 | ath9k_hw_configpcipowersave(sc->sc_ah, 0); |
| 1903 | |
| 1904 | /* |
| 1905 | * The basic interface to setting the hardware in a good |
| 1906 | * state is ``reset''. On return the hardware is known to |
| 1907 | * be powered up and with interrupts disabled. This must |
| 1908 | * be followed by initialization of the appropriate bits |
| 1909 | * and then setup of the interrupt mask. |
| 1910 | */ |
| 1911 | spin_lock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1912 | r = ath9k_hw_reset(sc->sc_ah, init_channel, false); |
| 1913 | if (r) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1914 | DPRINTF(sc, ATH_DBG_FATAL, |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1915 | "Unable to reset hardware; reset status %u " |
| 1916 | "(freq %u MHz)\n", r, |
| 1917 | curchan->center_freq); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1918 | spin_unlock_bh(&sc->sc_resetlock); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1919 | return r; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1920 | } |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1921 | spin_unlock_bh(&sc->sc_resetlock); |
| 1922 | |
| 1923 | /* |
| 1924 | * This is needed only to setup initial state |
| 1925 | * but it's best done after a reset. |
| 1926 | */ |
| 1927 | ath_update_txpow(sc); |
| 1928 | |
| 1929 | /* |
| 1930 | * Setup the hardware after reset: |
| 1931 | * The receive engine is set going. |
| 1932 | * Frame transmit is handled entirely |
| 1933 | * in the frame output path; there's nothing to do |
| 1934 | * here except setup the interrupt mask. |
| 1935 | */ |
| 1936 | if (ath_startrecv(sc) != 0) { |
| 1937 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 1938 | "Unable to start recv logic\n"); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1939 | return -EIO; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1940 | } |
| 1941 | |
| 1942 | /* Setup our intr mask. */ |
| 1943 | sc->sc_imask = ATH9K_INT_RX | ATH9K_INT_TX |
| 1944 | | ATH9K_INT_RXEOL | ATH9K_INT_RXORN |
| 1945 | | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL; |
| 1946 | |
| 1947 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_GTT) |
| 1948 | sc->sc_imask |= ATH9K_INT_GTT; |
| 1949 | |
| 1950 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) |
| 1951 | sc->sc_imask |= ATH9K_INT_CST; |
| 1952 | |
| 1953 | /* |
| 1954 | * Enable MIB interrupts when there are hardware phy counters. |
| 1955 | * Note we only do this (at the moment) for station mode. |
| 1956 | */ |
| 1957 | if (ath9k_hw_phycounters(sc->sc_ah) && |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 1958 | ((sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) || |
| 1959 | (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC))) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1960 | sc->sc_imask |= ATH9K_INT_MIB; |
| 1961 | /* |
| 1962 | * Some hardware processes the TIM IE and fires an |
| 1963 | * interrupt when the TIM bit is set. For hardware |
| 1964 | * that does, if not overridden by configuration, |
| 1965 | * enable the TIM interrupt when operating as station. |
| 1966 | */ |
| 1967 | if ((sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) && |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 1968 | (sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) && |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1969 | !sc->sc_config.swBeaconProcess) |
| 1970 | sc->sc_imask |= ATH9K_INT_TIM; |
| 1971 | |
Luis R. Rodriguez | ce111ba | 2008-12-23 15:58:39 -0800 | [diff] [blame] | 1972 | ath_cache_conf_rate(sc, &hw->conf); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 1973 | |
| 1974 | sc->sc_flags &= ~SC_OP_INVALID; |
| 1975 | |
| 1976 | /* Disable BMISS interrupt when we're not associated */ |
| 1977 | sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
| 1978 | ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask); |
| 1979 | |
| 1980 | ieee80211_wake_queues(sc->hw); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1981 | |
Senthil Balasubramanian | e97275c | 2008-11-13 18:00:02 +0530 | [diff] [blame] | 1982 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1983 | r = ath_start_rfkill_poll(sc); |
Vasanthakumar Thiagarajan | 500c064 | 2008-09-10 18:50:17 +0530 | [diff] [blame] | 1984 | #endif |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 1985 | return r; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1986 | } |
| 1987 | |
| 1988 | static int ath9k_tx(struct ieee80211_hw *hw, |
| 1989 | struct sk_buff *skb) |
| 1990 | { |
Jouni Malinen | 147583c | 2008-08-11 14:01:50 +0300 | [diff] [blame] | 1991 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 1992 | struct ath_softc *sc = hw->priv; |
| 1993 | struct ath_tx_control txctl; |
| 1994 | int hdrlen, padsize; |
| 1995 | |
| 1996 | memset(&txctl, 0, sizeof(struct ath_tx_control)); |
Jouni Malinen | 147583c | 2008-08-11 14:01:50 +0300 | [diff] [blame] | 1997 | |
| 1998 | /* |
| 1999 | * As a temporary workaround, assign seq# here; this will likely need |
| 2000 | * to be cleaned up to work better with Beacon transmission and virtual |
| 2001 | * BSSes. |
| 2002 | */ |
| 2003 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { |
| 2004 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 2005 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2006 | sc->tx.seq_no += 0x10; |
Jouni Malinen | 147583c | 2008-08-11 14:01:50 +0300 | [diff] [blame] | 2007 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2008 | hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); |
Jouni Malinen | 147583c | 2008-08-11 14:01:50 +0300 | [diff] [blame] | 2009 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2010 | |
| 2011 | /* Add the padding after the header if this is not already done */ |
| 2012 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
| 2013 | if (hdrlen & 3) { |
| 2014 | padsize = hdrlen % 4; |
| 2015 | if (skb_headroom(skb) < padsize) |
| 2016 | return -1; |
| 2017 | skb_push(skb, padsize); |
| 2018 | memmove(skb->data, skb->data + padsize, hdrlen); |
| 2019 | } |
| 2020 | |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 2021 | /* Check if a tx queue is available */ |
| 2022 | |
| 2023 | txctl.txq = ath_test_get_txq(sc, skb); |
| 2024 | if (!txctl.txq) |
| 2025 | goto exit; |
| 2026 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2027 | DPRINTF(sc, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2028 | |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 2029 | if (ath_tx_start(sc, skb, &txctl) != 0) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2030 | DPRINTF(sc, ATH_DBG_XMIT, "TX failed\n"); |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 2031 | goto exit; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2032 | } |
| 2033 | |
| 2034 | return 0; |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 2035 | exit: |
| 2036 | dev_kfree_skb_any(skb); |
| 2037 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2038 | } |
| 2039 | |
| 2040 | static void ath9k_stop(struct ieee80211_hw *hw) |
| 2041 | { |
| 2042 | struct ath_softc *sc = hw->priv; |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 2043 | |
| 2044 | if (sc->sc_flags & SC_OP_INVALID) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2045 | DPRINTF(sc, ATH_DBG_ANY, "Device not present\n"); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 2046 | return; |
| 2047 | } |
| 2048 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2049 | DPRINTF(sc, ATH_DBG_CONFIG, "Cleaning up\n"); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 2050 | |
| 2051 | ieee80211_stop_queues(sc->hw); |
| 2052 | |
| 2053 | /* make sure h/w will not generate any interrupt |
| 2054 | * before setting the invalid flag. */ |
| 2055 | ath9k_hw_set_interrupts(sc->sc_ah, 0); |
| 2056 | |
| 2057 | if (!(sc->sc_flags & SC_OP_INVALID)) { |
Sujith | 043a040 | 2009-01-16 21:38:47 +0530 | [diff] [blame] | 2058 | ath_drain_all_txq(sc, false); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 2059 | ath_stoprecv(sc); |
| 2060 | ath9k_hw_phy_disable(sc->sc_ah); |
| 2061 | } else |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2062 | sc->rx.rxlink = NULL; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 2063 | |
| 2064 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
| 2065 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 2066 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
| 2067 | #endif |
| 2068 | /* disable HAL and put h/w to sleep */ |
| 2069 | ath9k_hw_disable(sc->sc_ah); |
| 2070 | ath9k_hw_configpcipowersave(sc->sc_ah, 1); |
| 2071 | |
| 2072 | sc->sc_flags |= SC_OP_INVALID; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2073 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2074 | DPRINTF(sc, ATH_DBG_CONFIG, "Driver halt\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2075 | } |
| 2076 | |
| 2077 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
| 2078 | struct ieee80211_if_init_conf *conf) |
| 2079 | { |
| 2080 | struct ath_softc *sc = hw->priv; |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2081 | struct ath_vap *avp = (void *)conf->vif->drv_priv; |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2082 | enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2083 | |
| 2084 | /* Support only vap for now */ |
| 2085 | |
| 2086 | if (sc->sc_nvaps) |
| 2087 | return -ENOBUFS; |
| 2088 | |
| 2089 | switch (conf->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2090 | case NL80211_IFTYPE_STATION: |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2091 | ic_opmode = NL80211_IFTYPE_STATION; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2092 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2093 | case NL80211_IFTYPE_ADHOC: |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2094 | ic_opmode = NL80211_IFTYPE_ADHOC; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2095 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2096 | case NL80211_IFTYPE_AP: |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2097 | ic_opmode = NL80211_IFTYPE_AP; |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 2098 | break; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2099 | default: |
| 2100 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2101 | "Interface type %d not yet supported\n", conf->type); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2102 | return -EOPNOTSUPP; |
| 2103 | } |
| 2104 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2105 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VAP of type: %d\n", ic_opmode); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2106 | |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2107 | /* Set the VAP opmode */ |
| 2108 | avp->av_opmode = ic_opmode; |
| 2109 | avp->av_bslot = -1; |
| 2110 | |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2111 | if (ic_opmode == NL80211_IFTYPE_AP) |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2112 | ath9k_hw_set_tsfadjust(sc->sc_ah, 1); |
| 2113 | |
| 2114 | sc->sc_vaps[0] = conf->vif; |
| 2115 | sc->sc_nvaps++; |
| 2116 | |
| 2117 | /* Set the device opmode */ |
| 2118 | sc->sc_ah->ah_opmode = ic_opmode; |
| 2119 | |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 2120 | if (conf->type == NL80211_IFTYPE_AP) { |
| 2121 | /* TODO: is this a suitable place to start ANI for AP mode? */ |
| 2122 | /* Start ANI */ |
| 2123 | mod_timer(&sc->sc_ani.timer, |
| 2124 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
| 2125 | } |
| 2126 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2127 | return 0; |
| 2128 | } |
| 2129 | |
| 2130 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
| 2131 | struct ieee80211_if_init_conf *conf) |
| 2132 | { |
| 2133 | struct ath_softc *sc = hw->priv; |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2134 | struct ath_vap *avp = (void *)conf->vif->drv_priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2135 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2136 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2137 | |
Luis R. Rodriguez | 6f25542 | 2008-10-03 15:45:27 -0700 | [diff] [blame] | 2138 | /* Stop ANI */ |
| 2139 | del_timer_sync(&sc->sc_ani.timer); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2140 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2141 | /* Reclaim beacon resources */ |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2142 | if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP || |
| 2143 | sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC) { |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2144 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2145 | ath_beacon_return(sc, avp); |
| 2146 | } |
| 2147 | |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2148 | sc->sc_flags &= ~SC_OP_BEACONS; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2149 | |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2150 | sc->sc_vaps[0] = NULL; |
| 2151 | sc->sc_nvaps--; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2152 | } |
| 2153 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 2154 | static int ath9k_config(struct ieee80211_hw *hw, u32 changed) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2155 | { |
| 2156 | struct ath_softc *sc = hw->priv; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 2157 | struct ieee80211_conf *conf = &hw->conf; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2158 | |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 2159 | mutex_lock(&sc->mutex); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 2160 | if (changed & IEEE80211_CONF_CHANGE_PS) { |
| 2161 | if (conf->flags & IEEE80211_CONF_PS) { |
| 2162 | if ((sc->sc_imask & ATH9K_INT_TIM_TIMER) == 0) { |
| 2163 | sc->sc_imask |= ATH9K_INT_TIM_TIMER; |
| 2164 | ath9k_hw_set_interrupts(sc->sc_ah, |
| 2165 | sc->sc_imask); |
| 2166 | } |
| 2167 | ath9k_hw_setrxabort(sc->sc_ah, 1); |
| 2168 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); |
| 2169 | } else { |
| 2170 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
| 2171 | ath9k_hw_setrxabort(sc->sc_ah, 0); |
| 2172 | sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON; |
| 2173 | if (sc->sc_imask & ATH9K_INT_TIM_TIMER) { |
| 2174 | sc->sc_imask &= ~ATH9K_INT_TIM_TIMER; |
| 2175 | ath9k_hw_set_interrupts(sc->sc_ah, |
| 2176 | sc->sc_imask); |
| 2177 | } |
| 2178 | } |
| 2179 | } |
| 2180 | |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2181 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
Sujith | 99405f9 | 2008-11-24 12:08:35 +0530 | [diff] [blame] | 2182 | struct ieee80211_channel *curchan = hw->conf.channel; |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 2183 | int pos = curchan->hw_value; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2184 | |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2185 | DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n", |
| 2186 | curchan->center_freq); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 2187 | |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 2188 | /* XXX: remove me eventualy */ |
| 2189 | ath9k_update_ichannel(sc, &sc->sc_ah->ah_channels[pos]); |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 2190 | |
Luis R. Rodriguez | ecf7044 | 2008-12-23 15:58:43 -0800 | [diff] [blame] | 2191 | ath_update_chainmask(sc, conf_is_ht(conf)); |
Sujith | 86060f0 | 2009-01-07 14:25:29 +0530 | [diff] [blame] | 2192 | |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 2193 | if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2194 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n"); |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 2195 | mutex_unlock(&sc->mutex); |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 2196 | return -EINVAL; |
| 2197 | } |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 2198 | } |
Sujith | 86b89ee | 2008-08-07 10:54:57 +0530 | [diff] [blame] | 2199 | |
Luis R. Rodriguez | 5c020dc | 2008-10-22 13:28:45 -0700 | [diff] [blame] | 2200 | if (changed & IEEE80211_CONF_CHANGE_POWER) |
| 2201 | sc->sc_config.txpowlimit = 2 * conf->power_level; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2202 | |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 2203 | mutex_unlock(&sc->mutex); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2204 | return 0; |
| 2205 | } |
| 2206 | |
| 2207 | static int ath9k_config_interface(struct ieee80211_hw *hw, |
| 2208 | struct ieee80211_vif *vif, |
| 2209 | struct ieee80211_if_conf *conf) |
| 2210 | { |
| 2211 | struct ath_softc *sc = hw->priv; |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 2212 | struct ath_hal *ah = sc->sc_ah; |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2213 | struct ath_vap *avp = (void *)vif->drv_priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2214 | u32 rfilt = 0; |
| 2215 | int error, i; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2216 | |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 2217 | /* TODO: Need to decide which hw opmode to use for multi-interface |
| 2218 | * cases */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2219 | if (vif->type == NL80211_IFTYPE_AP && |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2220 | ah->ah_opmode != NL80211_IFTYPE_AP) { |
| 2221 | ah->ah_opmode = NL80211_IFTYPE_STATION; |
Jouni Malinen | 2ad67de | 2008-08-11 14:01:47 +0300 | [diff] [blame] | 2222 | ath9k_hw_setopmode(ah); |
| 2223 | ath9k_hw_write_associd(ah, sc->sc_myaddr, 0); |
| 2224 | /* Request full reset to get hw opmode changed properly */ |
| 2225 | sc->sc_flags |= SC_OP_FULL_RESET; |
| 2226 | } |
| 2227 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2228 | if ((conf->changed & IEEE80211_IFCC_BSSID) && |
| 2229 | !is_zero_ether_addr(conf->bssid)) { |
| 2230 | switch (vif->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2231 | case NL80211_IFTYPE_STATION: |
| 2232 | case NL80211_IFTYPE_ADHOC: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2233 | /* Set BSSID */ |
| 2234 | memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN); |
| 2235 | sc->sc_curaid = 0; |
| 2236 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, |
| 2237 | sc->sc_curaid); |
| 2238 | |
| 2239 | /* Set aggregation protection mode parameters */ |
| 2240 | sc->sc_config.ath_aggr_prot = 0; |
| 2241 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2242 | DPRINTF(sc, ATH_DBG_CONFIG, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2243 | "RX filter 0x%x bssid %pM aid 0x%x\n", |
| 2244 | rfilt, sc->sc_curbssid, sc->sc_curaid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2245 | |
| 2246 | /* need to reconfigure the beacon */ |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2247 | sc->sc_flags &= ~SC_OP_BEACONS ; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2248 | |
| 2249 | break; |
| 2250 | default: |
| 2251 | break; |
| 2252 | } |
| 2253 | } |
| 2254 | |
| 2255 | if ((conf->changed & IEEE80211_IFCC_BEACON) && |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2256 | ((vif->type == NL80211_IFTYPE_ADHOC) || |
| 2257 | (vif->type == NL80211_IFTYPE_AP))) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2258 | /* |
| 2259 | * Allocate and setup the beacon frame. |
| 2260 | * |
| 2261 | * Stop any previous beacon DMA. This may be |
| 2262 | * necessary, for example, when an ibss merge |
| 2263 | * causes reconfiguration; we may be called |
| 2264 | * with beacon transmission active. |
| 2265 | */ |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2266 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2267 | |
| 2268 | error = ath_beacon_alloc(sc, 0); |
| 2269 | if (error != 0) |
| 2270 | return error; |
| 2271 | |
| 2272 | ath_beacon_sync(sc, 0); |
| 2273 | } |
| 2274 | |
| 2275 | /* Check for WLAN_CAPABILITY_PRIVACY ? */ |
Colin McCabe | d97809d | 2008-12-01 13:38:55 -0800 | [diff] [blame] | 2276 | if ((avp->av_opmode != NL80211_IFTYPE_STATION)) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2277 | for (i = 0; i < IEEE80211_WEP_NKID; i++) |
| 2278 | if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i)) |
| 2279 | ath9k_hw_keysetmac(sc->sc_ah, |
| 2280 | (u16)i, |
| 2281 | sc->sc_curbssid); |
| 2282 | } |
| 2283 | |
| 2284 | /* Only legacy IBSS for now */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 2285 | if (vif->type == NL80211_IFTYPE_ADHOC) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2286 | ath_update_chainmask(sc, 0); |
| 2287 | |
| 2288 | return 0; |
| 2289 | } |
| 2290 | |
| 2291 | #define SUPPORTED_FILTERS \ |
| 2292 | (FIF_PROMISC_IN_BSS | \ |
| 2293 | FIF_ALLMULTI | \ |
| 2294 | FIF_CONTROL | \ |
| 2295 | FIF_OTHER_BSS | \ |
| 2296 | FIF_BCN_PRBRESP_PROMISC | \ |
| 2297 | FIF_FCSFAIL) |
| 2298 | |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 2299 | /* FIXME: sc->sc_full_reset ? */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2300 | static void ath9k_configure_filter(struct ieee80211_hw *hw, |
| 2301 | unsigned int changed_flags, |
| 2302 | unsigned int *total_flags, |
| 2303 | int mc_count, |
| 2304 | struct dev_mc_list *mclist) |
| 2305 | { |
| 2306 | struct ath_softc *sc = hw->priv; |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 2307 | u32 rfilt; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2308 | |
| 2309 | changed_flags &= SUPPORTED_FILTERS; |
| 2310 | *total_flags &= SUPPORTED_FILTERS; |
| 2311 | |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2312 | sc->rx.rxfilter = *total_flags; |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 2313 | rfilt = ath_calcrxfilter(sc); |
| 2314 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); |
| 2315 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2316 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
| 2317 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 2318 | ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2319 | } |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 2320 | |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 2321 | DPRINTF(sc, ATH_DBG_CONFIG, "Set HW RX filter: 0x%x\n", sc->rx.rxfilter); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2322 | } |
| 2323 | |
| 2324 | static void ath9k_sta_notify(struct ieee80211_hw *hw, |
| 2325 | struct ieee80211_vif *vif, |
| 2326 | enum sta_notify_cmd cmd, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2327 | struct ieee80211_sta *sta) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2328 | { |
| 2329 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2330 | |
| 2331 | switch (cmd) { |
| 2332 | case STA_NOTIFY_ADD: |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2333 | ath_node_attach(sc, sta); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2334 | break; |
| 2335 | case STA_NOTIFY_REMOVE: |
Sujith | b5aa9bf | 2008-10-29 10:13:31 +0530 | [diff] [blame] | 2336 | ath_node_detach(sc, sta); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2337 | break; |
| 2338 | default: |
| 2339 | break; |
| 2340 | } |
| 2341 | } |
| 2342 | |
| 2343 | static int ath9k_conf_tx(struct ieee80211_hw *hw, |
| 2344 | u16 queue, |
| 2345 | const struct ieee80211_tx_queue_params *params) |
| 2346 | { |
| 2347 | struct ath_softc *sc = hw->priv; |
Sujith | ea9880f | 2008-08-07 10:53:10 +0530 | [diff] [blame] | 2348 | struct ath9k_tx_queue_info qi; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2349 | int ret = 0, qnum; |
| 2350 | |
| 2351 | if (queue >= WME_NUM_AC) |
| 2352 | return 0; |
| 2353 | |
| 2354 | qi.tqi_aifs = params->aifs; |
| 2355 | qi.tqi_cwmin = params->cw_min; |
| 2356 | qi.tqi_cwmax = params->cw_max; |
| 2357 | qi.tqi_burstTime = params->txop; |
| 2358 | qnum = ath_get_hal_qnum(queue, sc); |
| 2359 | |
| 2360 | DPRINTF(sc, ATH_DBG_CONFIG, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2361 | "Configure tx [queue/halq] [%d/%d], " |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2362 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2363 | queue, qnum, params->aifs, params->cw_min, |
| 2364 | params->cw_max, params->txop); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2365 | |
| 2366 | ret = ath_txq_update(sc, qnum, &qi); |
| 2367 | if (ret) |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2368 | DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2369 | |
| 2370 | return ret; |
| 2371 | } |
| 2372 | |
| 2373 | static int ath9k_set_key(struct ieee80211_hw *hw, |
| 2374 | enum set_key_cmd cmd, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 2375 | struct ieee80211_vif *vif, |
| 2376 | struct ieee80211_sta *sta, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2377 | struct ieee80211_key_conf *key) |
| 2378 | { |
| 2379 | struct ath_softc *sc = hw->priv; |
| 2380 | int ret = 0; |
| 2381 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 2382 | ath9k_ps_wakeup(sc); |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2383 | DPRINTF(sc, ATH_DBG_KEYCACHE, "Set HW Key\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2384 | |
| 2385 | switch (cmd) { |
| 2386 | case SET_KEY: |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 2387 | ret = ath_key_config(sc, sta, key); |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 2388 | if (ret >= 0) { |
| 2389 | key->hw_key_idx = ret; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2390 | /* push IV and Michael MIC generation to stack */ |
| 2391 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
Senthil Balasubramanian | 1b96175 | 2008-09-01 19:45:21 +0530 | [diff] [blame] | 2392 | if (key->alg == ALG_TKIP) |
| 2393 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
Jouni Malinen | 0ced0e1 | 2009-01-08 13:32:13 +0200 | [diff] [blame] | 2394 | if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP) |
| 2395 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 2396 | ret = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2397 | } |
| 2398 | break; |
| 2399 | case DISABLE_KEY: |
| 2400 | ath_key_delete(sc, key); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2401 | break; |
| 2402 | default: |
| 2403 | ret = -EINVAL; |
| 2404 | } |
| 2405 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 2406 | ath9k_ps_restore(sc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2407 | return ret; |
| 2408 | } |
| 2409 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2410 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
| 2411 | struct ieee80211_vif *vif, |
| 2412 | struct ieee80211_bss_conf *bss_conf, |
| 2413 | u32 changed) |
| 2414 | { |
| 2415 | struct ath_softc *sc = hw->priv; |
| 2416 | |
| 2417 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2418 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n", |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2419 | bss_conf->use_short_preamble); |
| 2420 | if (bss_conf->use_short_preamble) |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2421 | sc->sc_flags |= SC_OP_PREAMBLE_SHORT; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2422 | else |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2423 | sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2424 | } |
| 2425 | |
| 2426 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2427 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n", |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2428 | bss_conf->use_cts_prot); |
| 2429 | if (bss_conf->use_cts_prot && |
| 2430 | hw->conf.channel->band != IEEE80211_BAND_5GHZ) |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2431 | sc->sc_flags |= SC_OP_PROTECT_ENABLE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2432 | else |
Sujith | 672840a | 2008-08-11 14:05:08 +0530 | [diff] [blame] | 2433 | sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2434 | } |
| 2435 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2436 | if (changed & BSS_CHANGED_ASSOC) { |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2437 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n", |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2438 | bss_conf->assoc); |
Sujith | 5640b08 | 2008-10-29 10:16:06 +0530 | [diff] [blame] | 2439 | ath9k_bss_assoc_info(sc, vif, bss_conf); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2440 | } |
| 2441 | } |
| 2442 | |
| 2443 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
| 2444 | { |
| 2445 | u64 tsf; |
| 2446 | struct ath_softc *sc = hw->priv; |
| 2447 | struct ath_hal *ah = sc->sc_ah; |
| 2448 | |
| 2449 | tsf = ath9k_hw_gettsf64(ah); |
| 2450 | |
| 2451 | return tsf; |
| 2452 | } |
| 2453 | |
| 2454 | static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
| 2455 | { |
| 2456 | struct ath_softc *sc = hw->priv; |
| 2457 | struct ath_hal *ah = sc->sc_ah; |
| 2458 | |
| 2459 | ath9k_hw_reset_tsf(ah); |
| 2460 | } |
| 2461 | |
| 2462 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
| 2463 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2464 | struct ieee80211_sta *sta, |
| 2465 | u16 tid, u16 *ssn) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2466 | { |
| 2467 | struct ath_softc *sc = hw->priv; |
| 2468 | int ret = 0; |
| 2469 | |
| 2470 | switch (action) { |
| 2471 | case IEEE80211_AMPDU_RX_START: |
Sujith | dca3edb | 2008-10-29 10:19:01 +0530 | [diff] [blame] | 2472 | if (!(sc->sc_flags & SC_OP_RXAGGR)) |
| 2473 | ret = -ENOTSUPP; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2474 | break; |
| 2475 | case IEEE80211_AMPDU_RX_STOP: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2476 | break; |
| 2477 | case IEEE80211_AMPDU_TX_START: |
Sujith | b5aa9bf | 2008-10-29 10:13:31 +0530 | [diff] [blame] | 2478 | ret = ath_tx_aggr_start(sc, sta, tid, ssn); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2479 | if (ret < 0) |
| 2480 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2481 | "Unable to start TX aggregation\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2482 | else |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2483 | ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2484 | break; |
| 2485 | case IEEE80211_AMPDU_TX_STOP: |
Sujith | b5aa9bf | 2008-10-29 10:13:31 +0530 | [diff] [blame] | 2486 | ret = ath_tx_aggr_stop(sc, sta, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2487 | if (ret < 0) |
| 2488 | DPRINTF(sc, ATH_DBG_FATAL, |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2489 | "Unable to stop TX aggregation\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2490 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2491 | ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2492 | break; |
Sujith | 8469cde | 2008-10-29 10:19:28 +0530 | [diff] [blame] | 2493 | case IEEE80211_AMPDU_TX_RESUME: |
| 2494 | ath_tx_aggr_resume(sc, sta, tid); |
| 2495 | break; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2496 | default: |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2497 | DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2498 | } |
| 2499 | |
| 2500 | return ret; |
| 2501 | } |
| 2502 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2503 | struct ieee80211_ops ath9k_ops = { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2504 | .tx = ath9k_tx, |
| 2505 | .start = ath9k_start, |
| 2506 | .stop = ath9k_stop, |
| 2507 | .add_interface = ath9k_add_interface, |
| 2508 | .remove_interface = ath9k_remove_interface, |
| 2509 | .config = ath9k_config, |
| 2510 | .config_interface = ath9k_config_interface, |
| 2511 | .configure_filter = ath9k_configure_filter, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2512 | .sta_notify = ath9k_sta_notify, |
| 2513 | .conf_tx = ath9k_conf_tx, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2514 | .bss_info_changed = ath9k_bss_info_changed, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2515 | .set_key = ath9k_set_key, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2516 | .get_tsf = ath9k_get_tsf, |
| 2517 | .reset_tsf = ath9k_reset_tsf, |
Johannes Berg | 4233df6 | 2008-10-13 13:35:05 +0200 | [diff] [blame] | 2518 | .ampdu_action = ath9k_ampdu_action, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2519 | }; |
| 2520 | |
Benoit PAPILLAULT | 392dff8 | 2008-11-06 22:26:49 +0100 | [diff] [blame] | 2521 | static struct { |
| 2522 | u32 version; |
| 2523 | const char * name; |
| 2524 | } ath_mac_bb_names[] = { |
| 2525 | { AR_SREV_VERSION_5416_PCI, "5416" }, |
| 2526 | { AR_SREV_VERSION_5416_PCIE, "5418" }, |
| 2527 | { AR_SREV_VERSION_9100, "9100" }, |
| 2528 | { AR_SREV_VERSION_9160, "9160" }, |
| 2529 | { AR_SREV_VERSION_9280, "9280" }, |
| 2530 | { AR_SREV_VERSION_9285, "9285" } |
| 2531 | }; |
| 2532 | |
| 2533 | static struct { |
| 2534 | u16 version; |
| 2535 | const char * name; |
| 2536 | } ath_rf_names[] = { |
| 2537 | { 0, "5133" }, |
| 2538 | { AR_RAD5133_SREV_MAJOR, "5133" }, |
| 2539 | { AR_RAD5122_SREV_MAJOR, "5122" }, |
| 2540 | { AR_RAD2133_SREV_MAJOR, "2133" }, |
| 2541 | { AR_RAD2122_SREV_MAJOR, "2122" } |
| 2542 | }; |
| 2543 | |
| 2544 | /* |
| 2545 | * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown. |
| 2546 | */ |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2547 | const char * |
Benoit PAPILLAULT | 392dff8 | 2008-11-06 22:26:49 +0100 | [diff] [blame] | 2548 | ath_mac_bb_name(u32 mac_bb_version) |
| 2549 | { |
| 2550 | int i; |
| 2551 | |
| 2552 | for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) { |
| 2553 | if (ath_mac_bb_names[i].version == mac_bb_version) { |
| 2554 | return ath_mac_bb_names[i].name; |
| 2555 | } |
| 2556 | } |
| 2557 | |
| 2558 | return "????"; |
| 2559 | } |
| 2560 | |
| 2561 | /* |
| 2562 | * Return the RF name. "????" is returned if the RF is unknown. |
| 2563 | */ |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2564 | const char * |
Benoit PAPILLAULT | 392dff8 | 2008-11-06 22:26:49 +0100 | [diff] [blame] | 2565 | ath_rf_name(u16 rf_version) |
| 2566 | { |
| 2567 | int i; |
| 2568 | |
| 2569 | for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) { |
| 2570 | if (ath_rf_names[i].version == rf_version) { |
| 2571 | return ath_rf_names[i].name; |
| 2572 | } |
| 2573 | } |
| 2574 | |
| 2575 | return "????"; |
| 2576 | } |
| 2577 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2578 | static int __init ath9k_init(void) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2579 | { |
Vasanthakumar Thiagarajan | ca8a856 | 2008-12-16 12:37:38 +0530 | [diff] [blame] | 2580 | int error; |
| 2581 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2582 | printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION); |
| 2583 | |
Vasanthakumar Thiagarajan | ca8a856 | 2008-12-16 12:37:38 +0530 | [diff] [blame] | 2584 | /* Register rate control algorithm */ |
| 2585 | error = ath_rate_control_register(); |
| 2586 | if (error != 0) { |
| 2587 | printk(KERN_ERR |
| 2588 | "Unable to register rate control algorithm: %d\n", |
| 2589 | error); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2590 | goto err_out; |
Vasanthakumar Thiagarajan | ca8a856 | 2008-12-16 12:37:38 +0530 | [diff] [blame] | 2591 | } |
| 2592 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2593 | error = ath_pci_init(); |
| 2594 | if (error < 0) { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2595 | printk(KERN_ERR |
| 2596 | "ath_pci: No devices found, driver not installed.\n"); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2597 | error = -ENODEV; |
| 2598 | goto err_rate_unregister; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2599 | } |
| 2600 | |
Gabor Juhos | 09329d3 | 2009-01-14 20:17:07 +0100 | [diff] [blame] | 2601 | error = ath_ahb_init(); |
| 2602 | if (error < 0) { |
| 2603 | error = -ENODEV; |
| 2604 | goto err_pci_exit; |
| 2605 | } |
| 2606 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2607 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2608 | |
Gabor Juhos | 09329d3 | 2009-01-14 20:17:07 +0100 | [diff] [blame] | 2609 | err_pci_exit: |
| 2610 | ath_pci_exit(); |
| 2611 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2612 | err_rate_unregister: |
Vasanthakumar Thiagarajan | ca8a856 | 2008-12-16 12:37:38 +0530 | [diff] [blame] | 2613 | ath_rate_control_unregister(); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2614 | err_out: |
| 2615 | return error; |
| 2616 | } |
| 2617 | module_init(ath9k_init); |
| 2618 | |
| 2619 | static void __exit ath9k_exit(void) |
| 2620 | { |
Gabor Juhos | 09329d3 | 2009-01-14 20:17:07 +0100 | [diff] [blame] | 2621 | ath_ahb_exit(); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2622 | ath_pci_exit(); |
| 2623 | ath_rate_control_unregister(); |
Sujith | 04bd4638 | 2008-11-28 22:18:05 +0530 | [diff] [blame] | 2624 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2625 | } |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2626 | module_exit(ath9k_exit); |