Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * GPL LICENSE SUMMARY |
| 4 | * |
| 5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of version 2 of the GNU General Public License as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 19 | * USA |
| 20 | * |
| 21 | * The full GNU General Public License is included in this distribution |
| 22 | * in the file called LICENSE.GPL. |
| 23 | * |
| 24 | * Contact Information: |
| 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | *****************************************************************************/ |
| 28 | |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/etherdevice.h> |
| 32 | #include <linux/sched.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <net/mac80211.h> |
| 35 | |
| 36 | #include "iwl-eeprom.h" |
| 37 | #include "iwl-dev.h" |
| 38 | #include "iwl-debug.h" |
| 39 | #include "iwl-core.h" |
| 40 | #include "iwl-io.h" |
| 41 | #include "iwl-power.h" |
| 42 | #include "iwl-sta.h" |
| 43 | #include "iwl-helpers.h" |
| 44 | |
| 45 | |
| 46 | MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); |
| 47 | MODULE_VERSION(IWLWIFI_VERSION); |
| 48 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| 49 | MODULE_LICENSE("GPL"); |
| 50 | |
| 51 | /* |
| 52 | * set bt_coex_active to true, uCode will do kill/defer |
| 53 | * every time the priority line is asserted (BT is sending signals on the |
| 54 | * priority line in the PCIx). |
| 55 | * set bt_coex_active to false, uCode will ignore the BT activity and |
| 56 | * perform the normal operation |
| 57 | * |
| 58 | * User might experience transmit issue on some platform due to WiFi/BT |
| 59 | * co-exist problem. The possible behaviors are: |
| 60 | * Able to scan and finding all the available AP |
| 61 | * Not able to associate with any AP |
| 62 | * On those platforms, WiFi communication can be restored by set |
| 63 | * "bt_coex_active" module parameter to "false" |
| 64 | * |
| 65 | * default: bt_coex_active = true (BT_COEX_ENABLE) |
| 66 | */ |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 67 | static bool bt_coex_active = true; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 68 | module_param(bt_coex_active, bool, S_IRUGO); |
| 69 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); |
| 70 | |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 71 | u32 iwlegacy_debug_level; |
| 72 | EXPORT_SYMBOL(iwlegacy_debug_level); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 73 | |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 74 | const u8 iwlegacy_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| 75 | EXPORT_SYMBOL(iwlegacy_bcast_addr); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 76 | |
| 77 | |
| 78 | /* This function both allocates and initializes hw and priv. */ |
| 79 | struct ieee80211_hw *iwl_legacy_alloc_all(struct iwl_cfg *cfg) |
| 80 | { |
| 81 | struct iwl_priv *priv; |
| 82 | /* mac80211 allocates memory for this device instance, including |
| 83 | * space for this driver's private structure */ |
| 84 | struct ieee80211_hw *hw; |
| 85 | |
| 86 | hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), |
| 87 | cfg->ops->ieee80211_ops); |
| 88 | if (hw == NULL) { |
| 89 | pr_err("%s: Can not allocate network device\n", |
| 90 | cfg->name); |
| 91 | goto out; |
| 92 | } |
| 93 | |
| 94 | priv = hw->priv; |
| 95 | priv->hw = hw; |
| 96 | |
| 97 | out: |
| 98 | return hw; |
| 99 | } |
| 100 | EXPORT_SYMBOL(iwl_legacy_alloc_all); |
| 101 | |
| 102 | #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
| 103 | #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ |
| 104 | static void iwl_legacy_init_ht_hw_capab(const struct iwl_priv *priv, |
| 105 | struct ieee80211_sta_ht_cap *ht_info, |
| 106 | enum ieee80211_band band) |
| 107 | { |
| 108 | u16 max_bit_rate = 0; |
| 109 | u8 rx_chains_num = priv->hw_params.rx_chains_num; |
| 110 | u8 tx_chains_num = priv->hw_params.tx_chains_num; |
| 111 | |
| 112 | ht_info->cap = 0; |
| 113 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
| 114 | |
| 115 | ht_info->ht_supported = true; |
| 116 | |
| 117 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
| 118 | max_bit_rate = MAX_BIT_RATE_20_MHZ; |
| 119 | if (priv->hw_params.ht40_channel & BIT(band)) { |
| 120 | ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| 121 | ht_info->cap |= IEEE80211_HT_CAP_SGI_40; |
| 122 | ht_info->mcs.rx_mask[4] = 0x01; |
| 123 | max_bit_rate = MAX_BIT_RATE_40_MHZ; |
| 124 | } |
| 125 | |
| 126 | if (priv->cfg->mod_params->amsdu_size_8K) |
| 127 | ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| 128 | |
| 129 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; |
| 130 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
| 131 | |
| 132 | ht_info->mcs.rx_mask[0] = 0xFF; |
| 133 | if (rx_chains_num >= 2) |
| 134 | ht_info->mcs.rx_mask[1] = 0xFF; |
| 135 | if (rx_chains_num >= 3) |
| 136 | ht_info->mcs.rx_mask[2] = 0xFF; |
| 137 | |
| 138 | /* Highest supported Rx data rate */ |
| 139 | max_bit_rate *= rx_chains_num; |
| 140 | WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); |
| 141 | ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); |
| 142 | |
| 143 | /* Tx MCS capabilities */ |
| 144 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
| 145 | if (tx_chains_num != rx_chains_num) { |
| 146 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
| 147 | ht_info->mcs.tx_params |= ((tx_chains_num - 1) << |
| 148 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * iwl_legacy_init_geos - Initialize mac80211's geo/channel info based from eeprom |
| 154 | */ |
| 155 | int iwl_legacy_init_geos(struct iwl_priv *priv) |
| 156 | { |
| 157 | struct iwl_channel_info *ch; |
| 158 | struct ieee80211_supported_band *sband; |
| 159 | struct ieee80211_channel *channels; |
| 160 | struct ieee80211_channel *geo_ch; |
| 161 | struct ieee80211_rate *rates; |
| 162 | int i = 0; |
Stanislaw Gruszka | 332704a | 2011-04-13 10:56:51 +0200 | [diff] [blame] | 163 | s8 max_tx_power = 0; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 164 | |
| 165 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
| 166 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { |
| 167 | IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); |
| 168 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | channels = kzalloc(sizeof(struct ieee80211_channel) * |
| 173 | priv->channel_count, GFP_KERNEL); |
| 174 | if (!channels) |
| 175 | return -ENOMEM; |
| 176 | |
| 177 | rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), |
| 178 | GFP_KERNEL); |
| 179 | if (!rates) { |
| 180 | kfree(channels); |
| 181 | return -ENOMEM; |
| 182 | } |
| 183 | |
| 184 | /* 5.2GHz channels start after the 2.4GHz channels */ |
| 185 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 186 | sband->channels = &channels[ARRAY_SIZE(iwlegacy_eeprom_band_1)]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 187 | /* just OFDM */ |
| 188 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; |
| 189 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; |
| 190 | |
| 191 | if (priv->cfg->sku & IWL_SKU_N) |
| 192 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, |
| 193 | IEEE80211_BAND_5GHZ); |
| 194 | |
| 195 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; |
| 196 | sband->channels = channels; |
| 197 | /* OFDM & CCK */ |
| 198 | sband->bitrates = rates; |
| 199 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY; |
| 200 | |
| 201 | if (priv->cfg->sku & IWL_SKU_N) |
| 202 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, |
| 203 | IEEE80211_BAND_2GHZ); |
| 204 | |
| 205 | priv->ieee_channels = channels; |
| 206 | priv->ieee_rates = rates; |
| 207 | |
| 208 | for (i = 0; i < priv->channel_count; i++) { |
| 209 | ch = &priv->channel_info[i]; |
| 210 | |
| 211 | if (!iwl_legacy_is_channel_valid(ch)) |
| 212 | continue; |
| 213 | |
Stanislaw Gruszka | 3e41de8 | 2011-04-28 11:51:26 +0200 | [diff] [blame] | 214 | sband = &priv->bands[ch->band]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 215 | |
| 216 | geo_ch = &sband->channels[sband->n_channels++]; |
| 217 | |
| 218 | geo_ch->center_freq = |
| 219 | ieee80211_channel_to_frequency(ch->channel, ch->band); |
| 220 | geo_ch->max_power = ch->max_power_avg; |
| 221 | geo_ch->max_antenna_gain = 0xff; |
| 222 | geo_ch->hw_value = ch->channel; |
| 223 | |
| 224 | if (iwl_legacy_is_channel_valid(ch)) { |
| 225 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
| 226 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; |
| 227 | |
| 228 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) |
| 229 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; |
| 230 | |
| 231 | if (ch->flags & EEPROM_CHANNEL_RADAR) |
| 232 | geo_ch->flags |= IEEE80211_CHAN_RADAR; |
| 233 | |
| 234 | geo_ch->flags |= ch->ht40_extension_channel; |
| 235 | |
Stanislaw Gruszka | 332704a | 2011-04-13 10:56:51 +0200 | [diff] [blame] | 236 | if (ch->max_power_avg > max_tx_power) |
| 237 | max_tx_power = ch->max_power_avg; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 238 | } else { |
| 239 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; |
| 240 | } |
| 241 | |
| 242 | IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", |
| 243 | ch->channel, geo_ch->center_freq, |
| 244 | iwl_legacy_is_channel_a_band(ch) ? "5.2" : "2.4", |
| 245 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? |
| 246 | "restricted" : "valid", |
| 247 | geo_ch->flags); |
| 248 | } |
| 249 | |
Stanislaw Gruszka | 332704a | 2011-04-13 10:56:51 +0200 | [diff] [blame] | 250 | priv->tx_power_device_lmt = max_tx_power; |
| 251 | priv->tx_power_user_lmt = max_tx_power; |
| 252 | priv->tx_power_next = max_tx_power; |
| 253 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 254 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && |
| 255 | priv->cfg->sku & IWL_SKU_A) { |
| 256 | IWL_INFO(priv, "Incorrectly detected BG card as ABG. " |
| 257 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", |
| 258 | priv->pci_dev->device, |
| 259 | priv->pci_dev->subsystem_device); |
| 260 | priv->cfg->sku &= ~IWL_SKU_A; |
| 261 | } |
| 262 | |
| 263 | IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
| 264 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, |
| 265 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); |
| 266 | |
| 267 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| 268 | |
| 269 | return 0; |
| 270 | } |
| 271 | EXPORT_SYMBOL(iwl_legacy_init_geos); |
| 272 | |
| 273 | /* |
| 274 | * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos |
| 275 | */ |
| 276 | void iwl_legacy_free_geos(struct iwl_priv *priv) |
| 277 | { |
| 278 | kfree(priv->ieee_channels); |
| 279 | kfree(priv->ieee_rates); |
| 280 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| 281 | } |
| 282 | EXPORT_SYMBOL(iwl_legacy_free_geos); |
| 283 | |
| 284 | static bool iwl_legacy_is_channel_extension(struct iwl_priv *priv, |
| 285 | enum ieee80211_band band, |
| 286 | u16 channel, u8 extension_chan_offset) |
| 287 | { |
| 288 | const struct iwl_channel_info *ch_info; |
| 289 | |
| 290 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); |
| 291 | if (!iwl_legacy_is_channel_valid(ch_info)) |
| 292 | return false; |
| 293 | |
| 294 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) |
| 295 | return !(ch_info->ht40_extension_channel & |
| 296 | IEEE80211_CHAN_NO_HT40PLUS); |
| 297 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
| 298 | return !(ch_info->ht40_extension_channel & |
| 299 | IEEE80211_CHAN_NO_HT40MINUS); |
| 300 | |
| 301 | return false; |
| 302 | } |
| 303 | |
| 304 | bool iwl_legacy_is_ht40_tx_allowed(struct iwl_priv *priv, |
| 305 | struct iwl_rxon_context *ctx, |
| 306 | struct ieee80211_sta_ht_cap *ht_cap) |
| 307 | { |
| 308 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) |
| 309 | return false; |
| 310 | |
| 311 | /* |
| 312 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
| 313 | * the bit will not set if it is pure 40MHz case |
| 314 | */ |
| 315 | if (ht_cap && !ht_cap->ht_supported) |
| 316 | return false; |
| 317 | |
| 318 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS |
| 319 | if (priv->disable_ht40) |
| 320 | return false; |
| 321 | #endif |
| 322 | |
| 323 | return iwl_legacy_is_channel_extension(priv, priv->band, |
| 324 | le16_to_cpu(ctx->staging.channel), |
| 325 | ctx->ht.extension_chan_offset); |
| 326 | } |
| 327 | EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed); |
| 328 | |
| 329 | static u16 iwl_legacy_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) |
| 330 | { |
| 331 | u16 new_val; |
| 332 | u16 beacon_factor; |
| 333 | |
| 334 | /* |
| 335 | * If mac80211 hasn't given us a beacon interval, program |
| 336 | * the default into the device. |
| 337 | */ |
| 338 | if (!beacon_val) |
| 339 | return DEFAULT_BEACON_INTERVAL; |
| 340 | |
| 341 | /* |
| 342 | * If the beacon interval we obtained from the peer |
| 343 | * is too large, we'll have to wake up more often |
| 344 | * (and in IBSS case, we'll beacon too much) |
| 345 | * |
| 346 | * For example, if max_beacon_val is 4096, and the |
| 347 | * requested beacon interval is 7000, we'll have to |
| 348 | * use 3500 to be able to wake up on the beacons. |
| 349 | * |
| 350 | * This could badly influence beacon detection stats. |
| 351 | */ |
| 352 | |
| 353 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; |
| 354 | new_val = beacon_val / beacon_factor; |
| 355 | |
| 356 | if (!new_val) |
| 357 | new_val = max_beacon_val; |
| 358 | |
| 359 | return new_val; |
| 360 | } |
| 361 | |
| 362 | int |
| 363 | iwl_legacy_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 364 | { |
| 365 | u64 tsf; |
| 366 | s32 interval_tm, rem; |
| 367 | struct ieee80211_conf *conf = NULL; |
| 368 | u16 beacon_int; |
| 369 | struct ieee80211_vif *vif = ctx->vif; |
| 370 | |
| 371 | conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw); |
| 372 | |
| 373 | lockdep_assert_held(&priv->mutex); |
| 374 | |
| 375 | memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| 376 | |
| 377 | ctx->timing.timestamp = cpu_to_le64(priv->timestamp); |
| 378 | ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); |
| 379 | |
| 380 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; |
| 381 | |
| 382 | /* |
| 383 | * TODO: For IBSS we need to get atim_window from mac80211, |
| 384 | * for now just always use 0 |
| 385 | */ |
| 386 | ctx->timing.atim_window = 0; |
| 387 | |
| 388 | beacon_int = iwl_legacy_adjust_beacon_interval(beacon_int, |
| 389 | priv->hw_params.max_beacon_itrvl * TIME_UNIT); |
| 390 | ctx->timing.beacon_interval = cpu_to_le16(beacon_int); |
| 391 | |
| 392 | tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ |
| 393 | interval_tm = beacon_int * TIME_UNIT; |
| 394 | rem = do_div(tsf, interval_tm); |
| 395 | ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
| 396 | |
| 397 | ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; |
| 398 | |
| 399 | IWL_DEBUG_ASSOC(priv, |
| 400 | "beacon interval %d beacon timer %d beacon tim %d\n", |
| 401 | le16_to_cpu(ctx->timing.beacon_interval), |
| 402 | le32_to_cpu(ctx->timing.beacon_init_val), |
| 403 | le16_to_cpu(ctx->timing.atim_window)); |
| 404 | |
| 405 | return iwl_legacy_send_cmd_pdu(priv, ctx->rxon_timing_cmd, |
| 406 | sizeof(ctx->timing), &ctx->timing); |
| 407 | } |
| 408 | EXPORT_SYMBOL(iwl_legacy_send_rxon_timing); |
| 409 | |
| 410 | void |
| 411 | iwl_legacy_set_rxon_hwcrypto(struct iwl_priv *priv, |
| 412 | struct iwl_rxon_context *ctx, |
| 413 | int hw_decrypt) |
| 414 | { |
| 415 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; |
| 416 | |
| 417 | if (hw_decrypt) |
| 418 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; |
| 419 | else |
| 420 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; |
| 421 | |
| 422 | } |
| 423 | EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto); |
| 424 | |
| 425 | /* validate RXON structure is valid */ |
| 426 | int |
| 427 | iwl_legacy_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 428 | { |
| 429 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; |
| 430 | bool error = false; |
| 431 | |
| 432 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { |
| 433 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { |
| 434 | IWL_WARN(priv, "check 2.4G: wrong narrow\n"); |
| 435 | error = true; |
| 436 | } |
| 437 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { |
| 438 | IWL_WARN(priv, "check 2.4G: wrong radar\n"); |
| 439 | error = true; |
| 440 | } |
| 441 | } else { |
| 442 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { |
| 443 | IWL_WARN(priv, "check 5.2G: not short slot!\n"); |
| 444 | error = true; |
| 445 | } |
| 446 | if (rxon->flags & RXON_FLG_CCK_MSK) { |
| 447 | IWL_WARN(priv, "check 5.2G: CCK!\n"); |
| 448 | error = true; |
| 449 | } |
| 450 | } |
| 451 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { |
| 452 | IWL_WARN(priv, "mac/bssid mcast!\n"); |
| 453 | error = true; |
| 454 | } |
| 455 | |
| 456 | /* make sure basic rates 6Mbps and 1Mbps are supported */ |
| 457 | if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && |
| 458 | (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { |
| 459 | IWL_WARN(priv, "neither 1 nor 6 are basic\n"); |
| 460 | error = true; |
| 461 | } |
| 462 | |
| 463 | if (le16_to_cpu(rxon->assoc_id) > 2007) { |
| 464 | IWL_WARN(priv, "aid > 2007\n"); |
| 465 | error = true; |
| 466 | } |
| 467 | |
| 468 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) |
| 469 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { |
| 470 | IWL_WARN(priv, "CCK and short slot\n"); |
| 471 | error = true; |
| 472 | } |
| 473 | |
| 474 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) |
| 475 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { |
| 476 | IWL_WARN(priv, "CCK and auto detect"); |
| 477 | error = true; |
| 478 | } |
| 479 | |
| 480 | if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | |
| 481 | RXON_FLG_TGG_PROTECT_MSK)) == |
| 482 | RXON_FLG_TGG_PROTECT_MSK) { |
| 483 | IWL_WARN(priv, "TGg but no auto-detect\n"); |
| 484 | error = true; |
| 485 | } |
| 486 | |
| 487 | if (error) |
| 488 | IWL_WARN(priv, "Tuning to channel %d\n", |
| 489 | le16_to_cpu(rxon->channel)); |
| 490 | |
| 491 | if (error) { |
| 492 | IWL_ERR(priv, "Invalid RXON\n"); |
| 493 | return -EINVAL; |
| 494 | } |
| 495 | return 0; |
| 496 | } |
| 497 | EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd); |
| 498 | |
| 499 | /** |
| 500 | * iwl_legacy_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
| 501 | * @priv: staging_rxon is compared to active_rxon |
| 502 | * |
| 503 | * If the RXON structure is changing enough to require a new tune, |
| 504 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that |
| 505 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. |
| 506 | */ |
| 507 | int iwl_legacy_full_rxon_required(struct iwl_priv *priv, |
| 508 | struct iwl_rxon_context *ctx) |
| 509 | { |
| 510 | const struct iwl_legacy_rxon_cmd *staging = &ctx->staging; |
| 511 | const struct iwl_legacy_rxon_cmd *active = &ctx->active; |
| 512 | |
| 513 | #define CHK(cond) \ |
| 514 | if ((cond)) { \ |
| 515 | IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \ |
| 516 | return 1; \ |
| 517 | } |
| 518 | |
| 519 | #define CHK_NEQ(c1, c2) \ |
| 520 | if ((c1) != (c2)) { \ |
| 521 | IWL_DEBUG_INFO(priv, "need full RXON - " \ |
| 522 | #c1 " != " #c2 " - %d != %d\n", \ |
| 523 | (c1), (c2)); \ |
| 524 | return 1; \ |
| 525 | } |
| 526 | |
| 527 | /* These items are only settable from the full RXON command */ |
| 528 | CHK(!iwl_legacy_is_associated_ctx(ctx)); |
| 529 | CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr)); |
| 530 | CHK(compare_ether_addr(staging->node_addr, active->node_addr)); |
| 531 | CHK(compare_ether_addr(staging->wlap_bssid_addr, |
| 532 | active->wlap_bssid_addr)); |
| 533 | CHK_NEQ(staging->dev_type, active->dev_type); |
| 534 | CHK_NEQ(staging->channel, active->channel); |
| 535 | CHK_NEQ(staging->air_propagation, active->air_propagation); |
| 536 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, |
| 537 | active->ofdm_ht_single_stream_basic_rates); |
| 538 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, |
| 539 | active->ofdm_ht_dual_stream_basic_rates); |
| 540 | CHK_NEQ(staging->assoc_id, active->assoc_id); |
| 541 | |
| 542 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can |
| 543 | * be updated with the RXON_ASSOC command -- however only some |
| 544 | * flag transitions are allowed using RXON_ASSOC */ |
| 545 | |
| 546 | /* Check if we are not switching bands */ |
| 547 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, |
| 548 | active->flags & RXON_FLG_BAND_24G_MSK); |
| 549 | |
| 550 | /* Check if we are switching association toggle */ |
| 551 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, |
| 552 | active->filter_flags & RXON_FILTER_ASSOC_MSK); |
| 553 | |
| 554 | #undef CHK |
| 555 | #undef CHK_NEQ |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | EXPORT_SYMBOL(iwl_legacy_full_rxon_required); |
| 560 | |
| 561 | u8 iwl_legacy_get_lowest_plcp(struct iwl_priv *priv, |
| 562 | struct iwl_rxon_context *ctx) |
| 563 | { |
| 564 | /* |
| 565 | * Assign the lowest rate -- should really get this from |
| 566 | * the beacon skb from mac80211. |
| 567 | */ |
| 568 | if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) |
| 569 | return IWL_RATE_1M_PLCP; |
| 570 | else |
| 571 | return IWL_RATE_6M_PLCP; |
| 572 | } |
| 573 | EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp); |
| 574 | |
| 575 | static void _iwl_legacy_set_rxon_ht(struct iwl_priv *priv, |
| 576 | struct iwl_ht_config *ht_conf, |
| 577 | struct iwl_rxon_context *ctx) |
| 578 | { |
| 579 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; |
| 580 | |
| 581 | if (!ctx->ht.enabled) { |
| 582 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | |
| 583 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | |
| 584 | RXON_FLG_HT40_PROT_MSK | |
| 585 | RXON_FLG_HT_PROT_MSK); |
| 586 | return; |
| 587 | } |
| 588 | |
| 589 | rxon->flags |= cpu_to_le32(ctx->ht.protection << |
| 590 | RXON_FLG_HT_OPERATING_MODE_POS); |
| 591 | |
| 592 | /* Set up channel bandwidth: |
| 593 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ |
| 594 | /* clear the HT channel mode before set the mode */ |
| 595 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | |
| 596 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
| 597 | if (iwl_legacy_is_ht40_tx_allowed(priv, ctx, NULL)) { |
| 598 | /* pure ht40 */ |
| 599 | if (ctx->ht.protection == |
| 600 | IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
| 601 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
| 602 | /* Note: control channel is opposite of extension channel */ |
| 603 | switch (ctx->ht.extension_chan_offset) { |
| 604 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| 605 | rxon->flags &= |
| 606 | ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| 607 | break; |
| 608 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| 609 | rxon->flags |= |
| 610 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| 611 | break; |
| 612 | } |
| 613 | } else { |
| 614 | /* Note: control channel is opposite of extension channel */ |
| 615 | switch (ctx->ht.extension_chan_offset) { |
| 616 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
| 617 | rxon->flags &= |
| 618 | ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
| 619 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
| 620 | break; |
| 621 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
| 622 | rxon->flags |= |
| 623 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
| 624 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
| 625 | break; |
| 626 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
| 627 | default: |
| 628 | /* channel location only valid if in Mixed mode */ |
| 629 | IWL_ERR(priv, |
| 630 | "invalid extension channel offset\n"); |
| 631 | break; |
| 632 | } |
| 633 | } |
| 634 | } else { |
| 635 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; |
| 636 | } |
| 637 | |
| 638 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
| 639 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| 640 | |
| 641 | IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " |
| 642 | "extension channel offset 0x%x\n", |
| 643 | le32_to_cpu(rxon->flags), ctx->ht.protection, |
| 644 | ctx->ht.extension_chan_offset); |
| 645 | } |
| 646 | |
| 647 | void iwl_legacy_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) |
| 648 | { |
| 649 | struct iwl_rxon_context *ctx; |
| 650 | |
| 651 | for_each_context(priv, ctx) |
| 652 | _iwl_legacy_set_rxon_ht(priv, ht_conf, ctx); |
| 653 | } |
| 654 | EXPORT_SYMBOL(iwl_legacy_set_rxon_ht); |
| 655 | |
| 656 | /* Return valid, unused, channel for a passive scan to reset the RF */ |
| 657 | u8 iwl_legacy_get_single_channel_number(struct iwl_priv *priv, |
| 658 | enum ieee80211_band band) |
| 659 | { |
| 660 | const struct iwl_channel_info *ch_info; |
| 661 | int i; |
| 662 | u8 channel = 0; |
| 663 | u8 min, max; |
| 664 | struct iwl_rxon_context *ctx; |
| 665 | |
| 666 | if (band == IEEE80211_BAND_5GHZ) { |
| 667 | min = 14; |
| 668 | max = priv->channel_count; |
| 669 | } else { |
| 670 | min = 0; |
| 671 | max = 14; |
| 672 | } |
| 673 | |
| 674 | for (i = min; i < max; i++) { |
| 675 | bool busy = false; |
| 676 | |
| 677 | for_each_context(priv, ctx) { |
| 678 | busy = priv->channel_info[i].channel == |
| 679 | le16_to_cpu(ctx->staging.channel); |
| 680 | if (busy) |
| 681 | break; |
| 682 | } |
| 683 | |
| 684 | if (busy) |
| 685 | continue; |
| 686 | |
| 687 | channel = priv->channel_info[i].channel; |
| 688 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); |
| 689 | if (iwl_legacy_is_channel_valid(ch_info)) |
| 690 | break; |
| 691 | } |
| 692 | |
| 693 | return channel; |
| 694 | } |
| 695 | EXPORT_SYMBOL(iwl_legacy_get_single_channel_number); |
| 696 | |
| 697 | /** |
| 698 | * iwl_legacy_set_rxon_channel - Set the band and channel values in staging RXON |
| 699 | * @ch: requested channel as a pointer to struct ieee80211_channel |
| 700 | |
| 701 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields |
| 702 | * in the staging RXON flag structure based on the ch->band |
| 703 | */ |
| 704 | int |
| 705 | iwl_legacy_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, |
| 706 | struct iwl_rxon_context *ctx) |
| 707 | { |
| 708 | enum ieee80211_band band = ch->band; |
| 709 | u16 channel = ch->hw_value; |
| 710 | |
| 711 | if ((le16_to_cpu(ctx->staging.channel) == channel) && |
| 712 | (priv->band == band)) |
| 713 | return 0; |
| 714 | |
| 715 | ctx->staging.channel = cpu_to_le16(channel); |
| 716 | if (band == IEEE80211_BAND_5GHZ) |
| 717 | ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK; |
| 718 | else |
| 719 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; |
| 720 | |
| 721 | priv->band = band; |
| 722 | |
| 723 | IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); |
| 724 | |
| 725 | return 0; |
| 726 | } |
| 727 | EXPORT_SYMBOL(iwl_legacy_set_rxon_channel); |
| 728 | |
| 729 | void iwl_legacy_set_flags_for_band(struct iwl_priv *priv, |
| 730 | struct iwl_rxon_context *ctx, |
| 731 | enum ieee80211_band band, |
| 732 | struct ieee80211_vif *vif) |
| 733 | { |
| 734 | if (band == IEEE80211_BAND_5GHZ) { |
| 735 | ctx->staging.flags &= |
| 736 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
| 737 | | RXON_FLG_CCK_MSK); |
| 738 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| 739 | } else { |
| 740 | /* Copied from iwl_post_associate() */ |
| 741 | if (vif && vif->bss_conf.use_short_slot) |
| 742 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| 743 | else |
| 744 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| 745 | |
| 746 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; |
| 747 | ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; |
| 748 | ctx->staging.flags &= ~RXON_FLG_CCK_MSK; |
| 749 | } |
| 750 | } |
| 751 | EXPORT_SYMBOL(iwl_legacy_set_flags_for_band); |
| 752 | |
| 753 | /* |
| 754 | * initialize rxon structure with default values from eeprom |
| 755 | */ |
| 756 | void iwl_legacy_connection_init_rx_config(struct iwl_priv *priv, |
| 757 | struct iwl_rxon_context *ctx) |
| 758 | { |
| 759 | const struct iwl_channel_info *ch_info; |
| 760 | |
| 761 | memset(&ctx->staging, 0, sizeof(ctx->staging)); |
| 762 | |
| 763 | if (!ctx->vif) { |
| 764 | ctx->staging.dev_type = ctx->unused_devtype; |
| 765 | } else |
| 766 | switch (ctx->vif->type) { |
| 767 | |
| 768 | case NL80211_IFTYPE_STATION: |
| 769 | ctx->staging.dev_type = ctx->station_devtype; |
| 770 | ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; |
| 771 | break; |
| 772 | |
| 773 | case NL80211_IFTYPE_ADHOC: |
| 774 | ctx->staging.dev_type = ctx->ibss_devtype; |
| 775 | ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; |
| 776 | ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | |
| 777 | RXON_FILTER_ACCEPT_GRP_MSK; |
| 778 | break; |
| 779 | |
| 780 | default: |
| 781 | IWL_ERR(priv, "Unsupported interface type %d\n", |
| 782 | ctx->vif->type); |
| 783 | break; |
| 784 | } |
| 785 | |
| 786 | #if 0 |
| 787 | /* TODO: Figure out when short_preamble would be set and cache from |
| 788 | * that */ |
| 789 | if (!hw_to_local(priv->hw)->short_preamble) |
| 790 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| 791 | else |
| 792 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| 793 | #endif |
| 794 | |
| 795 | ch_info = iwl_legacy_get_channel_info(priv, priv->band, |
| 796 | le16_to_cpu(ctx->active.channel)); |
| 797 | |
| 798 | if (!ch_info) |
| 799 | ch_info = &priv->channel_info[0]; |
| 800 | |
| 801 | ctx->staging.channel = cpu_to_le16(ch_info->channel); |
| 802 | priv->band = ch_info->band; |
| 803 | |
| 804 | iwl_legacy_set_flags_for_band(priv, ctx, priv->band, ctx->vif); |
| 805 | |
| 806 | ctx->staging.ofdm_basic_rates = |
| 807 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| 808 | ctx->staging.cck_basic_rates = |
| 809 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| 810 | |
| 811 | /* clear both MIX and PURE40 mode flag */ |
| 812 | ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | |
| 813 | RXON_FLG_CHANNEL_MODE_PURE_40); |
| 814 | if (ctx->vif) |
| 815 | memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); |
| 816 | |
| 817 | ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; |
| 818 | ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; |
| 819 | } |
| 820 | EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config); |
| 821 | |
| 822 | void iwl_legacy_set_rate(struct iwl_priv *priv) |
| 823 | { |
| 824 | const struct ieee80211_supported_band *hw = NULL; |
| 825 | struct ieee80211_rate *rate; |
| 826 | struct iwl_rxon_context *ctx; |
| 827 | int i; |
| 828 | |
| 829 | hw = iwl_get_hw_mode(priv, priv->band); |
| 830 | if (!hw) { |
| 831 | IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); |
| 832 | return; |
| 833 | } |
| 834 | |
| 835 | priv->active_rate = 0; |
| 836 | |
| 837 | for (i = 0; i < hw->n_bitrates; i++) { |
| 838 | rate = &(hw->bitrates[i]); |
| 839 | if (rate->hw_value < IWL_RATE_COUNT_LEGACY) |
| 840 | priv->active_rate |= (1 << rate->hw_value); |
| 841 | } |
| 842 | |
| 843 | IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); |
| 844 | |
| 845 | for_each_context(priv, ctx) { |
| 846 | ctx->staging.cck_basic_rates = |
| 847 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| 848 | |
| 849 | ctx->staging.ofdm_basic_rates = |
| 850 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| 851 | } |
| 852 | } |
| 853 | EXPORT_SYMBOL(iwl_legacy_set_rate); |
| 854 | |
| 855 | void iwl_legacy_chswitch_done(struct iwl_priv *priv, bool is_success) |
| 856 | { |
| 857 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 858 | |
| 859 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 860 | return; |
| 861 | |
| 862 | if (priv->switch_rxon.switch_in_progress) { |
| 863 | ieee80211_chswitch_done(ctx->vif, is_success); |
| 864 | mutex_lock(&priv->mutex); |
| 865 | priv->switch_rxon.switch_in_progress = false; |
| 866 | mutex_unlock(&priv->mutex); |
| 867 | } |
| 868 | } |
| 869 | EXPORT_SYMBOL(iwl_legacy_chswitch_done); |
| 870 | |
| 871 | void iwl_legacy_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) |
| 872 | { |
| 873 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 874 | struct iwl_csa_notification *csa = &(pkt->u.csa_notif); |
| 875 | |
| 876 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 877 | struct iwl_legacy_rxon_cmd *rxon = (void *)&ctx->active; |
| 878 | |
| 879 | if (priv->switch_rxon.switch_in_progress) { |
| 880 | if (!le32_to_cpu(csa->status) && |
| 881 | (csa->channel == priv->switch_rxon.channel)) { |
| 882 | rxon->channel = csa->channel; |
| 883 | ctx->staging.channel = csa->channel; |
| 884 | IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", |
| 885 | le16_to_cpu(csa->channel)); |
| 886 | iwl_legacy_chswitch_done(priv, true); |
| 887 | } else { |
| 888 | IWL_ERR(priv, "CSA notif (fail) : channel %d\n", |
| 889 | le16_to_cpu(csa->channel)); |
| 890 | iwl_legacy_chswitch_done(priv, false); |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | EXPORT_SYMBOL(iwl_legacy_rx_csa); |
| 895 | |
| 896 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 897 | void iwl_legacy_print_rx_config_cmd(struct iwl_priv *priv, |
| 898 | struct iwl_rxon_context *ctx) |
| 899 | { |
| 900 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; |
| 901 | |
| 902 | IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); |
| 903 | iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
| 904 | IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", |
| 905 | le16_to_cpu(rxon->channel)); |
| 906 | IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); |
| 907 | IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", |
| 908 | le32_to_cpu(rxon->filter_flags)); |
| 909 | IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); |
| 910 | IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", |
| 911 | rxon->ofdm_basic_rates); |
| 912 | IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", |
| 913 | rxon->cck_basic_rates); |
| 914 | IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); |
| 915 | IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); |
| 916 | IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", |
| 917 | le16_to_cpu(rxon->assoc_id)); |
| 918 | } |
| 919 | EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd); |
| 920 | #endif |
| 921 | /** |
| 922 | * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card |
| 923 | */ |
| 924 | void iwl_legacy_irq_handle_error(struct iwl_priv *priv) |
| 925 | { |
| 926 | /* Set the FW error flag -- cleared on iwl_down */ |
| 927 | set_bit(STATUS_FW_ERROR, &priv->status); |
| 928 | |
| 929 | /* Cancel currently queued command. */ |
| 930 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| 931 | |
| 932 | IWL_ERR(priv, "Loaded firmware version: %s\n", |
| 933 | priv->hw->wiphy->fw_version); |
| 934 | |
| 935 | priv->cfg->ops->lib->dump_nic_error_log(priv); |
| 936 | if (priv->cfg->ops->lib->dump_fh) |
| 937 | priv->cfg->ops->lib->dump_fh(priv, NULL, false); |
| 938 | priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); |
| 939 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 940 | if (iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) |
| 941 | iwl_legacy_print_rx_config_cmd(priv, |
| 942 | &priv->contexts[IWL_RXON_CTX_BSS]); |
| 943 | #endif |
| 944 | |
| 945 | wake_up_interruptible(&priv->wait_command_queue); |
| 946 | |
| 947 | /* Keep the restart process from trying to send host |
| 948 | * commands by clearing the INIT status bit */ |
| 949 | clear_bit(STATUS_READY, &priv->status); |
| 950 | |
| 951 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| 952 | IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
| 953 | "Restarting adapter due to uCode error.\n"); |
| 954 | |
| 955 | if (priv->cfg->mod_params->restart_fw) |
| 956 | queue_work(priv->workqueue, &priv->restart); |
| 957 | } |
| 958 | } |
| 959 | EXPORT_SYMBOL(iwl_legacy_irq_handle_error); |
| 960 | |
| 961 | static int iwl_legacy_apm_stop_master(struct iwl_priv *priv) |
| 962 | { |
| 963 | int ret = 0; |
| 964 | |
| 965 | /* stop device's busmaster DMA activity */ |
| 966 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
| 967 | |
| 968 | ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, |
| 969 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); |
| 970 | if (ret) |
| 971 | IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); |
| 972 | |
| 973 | IWL_DEBUG_INFO(priv, "stop master\n"); |
| 974 | |
| 975 | return ret; |
| 976 | } |
| 977 | |
| 978 | void iwl_legacy_apm_stop(struct iwl_priv *priv) |
| 979 | { |
| 980 | IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); |
| 981 | |
| 982 | /* Stop device's DMA activity */ |
| 983 | iwl_legacy_apm_stop_master(priv); |
| 984 | |
| 985 | /* Reset the entire device */ |
| 986 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| 987 | |
| 988 | udelay(10); |
| 989 | |
| 990 | /* |
| 991 | * Clear "initialization complete" bit to move adapter from |
| 992 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. |
| 993 | */ |
| 994 | iwl_legacy_clear_bit(priv, CSR_GP_CNTRL, |
| 995 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| 996 | } |
| 997 | EXPORT_SYMBOL(iwl_legacy_apm_stop); |
| 998 | |
| 999 | |
| 1000 | /* |
| 1001 | * Start up NIC's basic functionality after it has been reset |
| 1002 | * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop()) |
| 1003 | * NOTE: This does not load uCode nor start the embedded processor |
| 1004 | */ |
| 1005 | int iwl_legacy_apm_init(struct iwl_priv *priv) |
| 1006 | { |
| 1007 | int ret = 0; |
| 1008 | u16 lctl; |
| 1009 | |
| 1010 | IWL_DEBUG_INFO(priv, "Init card's basic functions\n"); |
| 1011 | |
| 1012 | /* |
| 1013 | * Use "set_bit" below rather than "write", to preserve any hardware |
| 1014 | * bits already set by default after reset. |
| 1015 | */ |
| 1016 | |
| 1017 | /* Disable L0S exit timer (platform NMI Work/Around) */ |
| 1018 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, |
| 1019 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
| 1020 | |
| 1021 | /* |
| 1022 | * Disable L0s without affecting L1; |
| 1023 | * don't wait for ICH L0s (ICH bug W/A) |
| 1024 | */ |
| 1025 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, |
| 1026 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
| 1027 | |
| 1028 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ |
| 1029 | iwl_legacy_set_bit(priv, CSR_DBG_HPET_MEM_REG, |
| 1030 | CSR_DBG_HPET_MEM_REG_VAL); |
| 1031 | |
| 1032 | /* |
| 1033 | * Enable HAP INTA (interrupt from management bus) to |
| 1034 | * wake device's PCI Express link L1a -> L0s |
| 1035 | * NOTE: This is no-op for 3945 (non-existant bit) |
| 1036 | */ |
| 1037 | iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
| 1038 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
| 1039 | |
| 1040 | /* |
| 1041 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. |
| 1042 | * Check if BIOS (or OS) enabled L1-ASPM on this device. |
| 1043 | * If so (likely), disable L0S, so device moves directly L0->L1; |
| 1044 | * costs negligible amount of power savings. |
| 1045 | * If not (unlikely), enable L0S, so there is at least some |
| 1046 | * power savings, even without L1. |
| 1047 | */ |
| 1048 | if (priv->cfg->base_params->set_l0s) { |
| 1049 | lctl = iwl_legacy_pcie_link_ctl(priv); |
| 1050 | if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == |
| 1051 | PCI_CFG_LINK_CTRL_VAL_L1_EN) { |
| 1052 | /* L1-ASPM enabled; disable(!) L0S */ |
| 1053 | iwl_legacy_set_bit(priv, CSR_GIO_REG, |
| 1054 | CSR_GIO_REG_VAL_L0S_ENABLED); |
| 1055 | IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); |
| 1056 | } else { |
| 1057 | /* L1-ASPM disabled; enable(!) L0S */ |
| 1058 | iwl_legacy_clear_bit(priv, CSR_GIO_REG, |
| 1059 | CSR_GIO_REG_VAL_L0S_ENABLED); |
| 1060 | IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | /* Configure analog phase-lock-loop before activating to D0A */ |
| 1065 | if (priv->cfg->base_params->pll_cfg_val) |
| 1066 | iwl_legacy_set_bit(priv, CSR_ANA_PLL_CFG, |
| 1067 | priv->cfg->base_params->pll_cfg_val); |
| 1068 | |
| 1069 | /* |
| 1070 | * Set "initialization complete" bit to move adapter from |
| 1071 | * D0U* --> D0A* (powered-up active) state. |
| 1072 | */ |
| 1073 | iwl_legacy_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| 1074 | |
| 1075 | /* |
| 1076 | * Wait for clock stabilization; once stabilized, access to |
| 1077 | * device-internal resources is supported, e.g. iwl_legacy_write_prph() |
| 1078 | * and accesses to uCode SRAM. |
| 1079 | */ |
| 1080 | ret = iwl_poll_bit(priv, CSR_GP_CNTRL, |
| 1081 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
| 1082 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); |
| 1083 | if (ret < 0) { |
| 1084 | IWL_DEBUG_INFO(priv, "Failed to init the card\n"); |
| 1085 | goto out; |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. |
| 1090 | * BSM (Boostrap State Machine) is only in 3945 and 4965. |
| 1091 | * |
| 1092 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits |
| 1093 | * do not disable clocks. This preserves any hardware bits already |
| 1094 | * set by default in "CLK_CTRL_REG" after reset. |
| 1095 | */ |
| 1096 | if (priv->cfg->base_params->use_bsm) |
| 1097 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, |
| 1098 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); |
| 1099 | else |
| 1100 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, |
| 1101 | APMG_CLK_VAL_DMA_CLK_RQT); |
| 1102 | udelay(20); |
| 1103 | |
| 1104 | /* Disable L1-Active */ |
| 1105 | iwl_legacy_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
| 1106 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| 1107 | |
| 1108 | out: |
| 1109 | return ret; |
| 1110 | } |
| 1111 | EXPORT_SYMBOL(iwl_legacy_apm_init); |
| 1112 | |
| 1113 | |
| 1114 | int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) |
| 1115 | { |
| 1116 | int ret; |
| 1117 | s8 prev_tx_power; |
Stanislaw Gruszka | 43f12d4 | 2011-02-24 14:23:55 +0100 | [diff] [blame] | 1118 | bool defer; |
| 1119 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1120 | |
| 1121 | lockdep_assert_held(&priv->mutex); |
| 1122 | |
| 1123 | if (priv->tx_power_user_lmt == tx_power && !force) |
| 1124 | return 0; |
| 1125 | |
| 1126 | if (!priv->cfg->ops->lib->send_tx_power) |
| 1127 | return -EOPNOTSUPP; |
| 1128 | |
Stanislaw Gruszka | 332704a | 2011-04-13 10:56:51 +0200 | [diff] [blame] | 1129 | /* 0 dBm mean 1 milliwatt */ |
| 1130 | if (tx_power < 0) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1131 | IWL_WARN(priv, |
Stanislaw Gruszka | 332704a | 2011-04-13 10:56:51 +0200 | [diff] [blame] | 1132 | "Requested user TXPOWER %d below 1 mW.\n", |
| 1133 | tx_power); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1134 | return -EINVAL; |
| 1135 | } |
| 1136 | |
| 1137 | if (tx_power > priv->tx_power_device_lmt) { |
| 1138 | IWL_WARN(priv, |
| 1139 | "Requested user TXPOWER %d above upper limit %d.\n", |
| 1140 | tx_power, priv->tx_power_device_lmt); |
| 1141 | return -EINVAL; |
| 1142 | } |
| 1143 | |
| 1144 | if (!iwl_legacy_is_ready_rf(priv)) |
| 1145 | return -EIO; |
| 1146 | |
Stanislaw Gruszka | 43f12d4 | 2011-02-24 14:23:55 +0100 | [diff] [blame] | 1147 | /* scan complete and commit_rxon use tx_power_next value, |
| 1148 | * it always need to be updated for newest request */ |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1149 | priv->tx_power_next = tx_power; |
Stanislaw Gruszka | 43f12d4 | 2011-02-24 14:23:55 +0100 | [diff] [blame] | 1150 | |
| 1151 | /* do not set tx power when scanning or channel changing */ |
| 1152 | defer = test_bit(STATUS_SCANNING, &priv->status) || |
| 1153 | memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); |
| 1154 | if (defer && !force) { |
| 1155 | IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1156 | return 0; |
| 1157 | } |
| 1158 | |
| 1159 | prev_tx_power = priv->tx_power_user_lmt; |
| 1160 | priv->tx_power_user_lmt = tx_power; |
| 1161 | |
| 1162 | ret = priv->cfg->ops->lib->send_tx_power(priv); |
| 1163 | |
| 1164 | /* if fail to set tx_power, restore the orig. tx power */ |
| 1165 | if (ret) { |
| 1166 | priv->tx_power_user_lmt = prev_tx_power; |
| 1167 | priv->tx_power_next = prev_tx_power; |
| 1168 | } |
| 1169 | return ret; |
| 1170 | } |
| 1171 | EXPORT_SYMBOL(iwl_legacy_set_tx_power); |
| 1172 | |
| 1173 | void iwl_legacy_send_bt_config(struct iwl_priv *priv) |
| 1174 | { |
| 1175 | struct iwl_bt_cmd bt_cmd = { |
| 1176 | .lead_time = BT_LEAD_TIME_DEF, |
| 1177 | .max_kill = BT_MAX_KILL_DEF, |
| 1178 | .kill_ack_mask = 0, |
| 1179 | .kill_cts_mask = 0, |
| 1180 | }; |
| 1181 | |
| 1182 | if (!bt_coex_active) |
| 1183 | bt_cmd.flags = BT_COEX_DISABLE; |
| 1184 | else |
| 1185 | bt_cmd.flags = BT_COEX_ENABLE; |
| 1186 | |
| 1187 | IWL_DEBUG_INFO(priv, "BT coex %s\n", |
| 1188 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); |
| 1189 | |
| 1190 | if (iwl_legacy_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
| 1191 | sizeof(struct iwl_bt_cmd), &bt_cmd)) |
| 1192 | IWL_ERR(priv, "failed to send BT Coex Config\n"); |
| 1193 | } |
| 1194 | EXPORT_SYMBOL(iwl_legacy_send_bt_config); |
| 1195 | |
| 1196 | int iwl_legacy_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) |
| 1197 | { |
| 1198 | struct iwl_statistics_cmd statistics_cmd = { |
| 1199 | .configuration_flags = |
| 1200 | clear ? IWL_STATS_CONF_CLEAR_STATS : 0, |
| 1201 | }; |
| 1202 | |
| 1203 | if (flags & CMD_ASYNC) |
| 1204 | return iwl_legacy_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, |
| 1205 | sizeof(struct iwl_statistics_cmd), |
| 1206 | &statistics_cmd, NULL); |
| 1207 | else |
| 1208 | return iwl_legacy_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, |
| 1209 | sizeof(struct iwl_statistics_cmd), |
| 1210 | &statistics_cmd); |
| 1211 | } |
| 1212 | EXPORT_SYMBOL(iwl_legacy_send_statistics_request); |
| 1213 | |
| 1214 | void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv *priv, |
| 1215 | struct iwl_rx_mem_buffer *rxb) |
| 1216 | { |
| 1217 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| 1218 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1219 | struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); |
| 1220 | IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", |
| 1221 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
| 1222 | #endif |
| 1223 | } |
| 1224 | EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif); |
| 1225 | |
| 1226 | void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv *priv, |
| 1227 | struct iwl_rx_mem_buffer *rxb) |
| 1228 | { |
| 1229 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1230 | u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; |
| 1231 | IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " |
| 1232 | "notification for %s:\n", len, |
| 1233 | iwl_legacy_get_cmd_string(pkt->hdr.cmd)); |
| 1234 | iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); |
| 1235 | } |
| 1236 | EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif); |
| 1237 | |
| 1238 | void iwl_legacy_rx_reply_error(struct iwl_priv *priv, |
| 1239 | struct iwl_rx_mem_buffer *rxb) |
| 1240 | { |
| 1241 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1242 | |
| 1243 | IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " |
| 1244 | "seq 0x%04X ser 0x%08X\n", |
| 1245 | le32_to_cpu(pkt->u.err_resp.error_type), |
| 1246 | iwl_legacy_get_cmd_string(pkt->u.err_resp.cmd_id), |
| 1247 | pkt->u.err_resp.cmd_id, |
| 1248 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), |
| 1249 | le32_to_cpu(pkt->u.err_resp.error_info)); |
| 1250 | } |
| 1251 | EXPORT_SYMBOL(iwl_legacy_rx_reply_error); |
| 1252 | |
| 1253 | void iwl_legacy_clear_isr_stats(struct iwl_priv *priv) |
| 1254 | { |
| 1255 | memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); |
| 1256 | } |
| 1257 | |
| 1258 | int iwl_legacy_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| 1259 | const struct ieee80211_tx_queue_params *params) |
| 1260 | { |
| 1261 | struct iwl_priv *priv = hw->priv; |
| 1262 | struct iwl_rxon_context *ctx; |
| 1263 | unsigned long flags; |
| 1264 | int q; |
| 1265 | |
| 1266 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1267 | |
| 1268 | if (!iwl_legacy_is_ready_rf(priv)) { |
| 1269 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
| 1270 | return -EIO; |
| 1271 | } |
| 1272 | |
| 1273 | if (queue >= AC_NUM) { |
| 1274 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); |
| 1275 | return 0; |
| 1276 | } |
| 1277 | |
| 1278 | q = AC_NUM - 1 - queue; |
| 1279 | |
| 1280 | spin_lock_irqsave(&priv->lock, flags); |
| 1281 | |
| 1282 | for_each_context(priv, ctx) { |
| 1283 | ctx->qos_data.def_qos_parm.ac[q].cw_min = |
| 1284 | cpu_to_le16(params->cw_min); |
| 1285 | ctx->qos_data.def_qos_parm.ac[q].cw_max = |
| 1286 | cpu_to_le16(params->cw_max); |
| 1287 | ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
| 1288 | ctx->qos_data.def_qos_parm.ac[q].edca_txop = |
| 1289 | cpu_to_le16((params->txop * 32)); |
| 1290 | |
| 1291 | ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
| 1292 | } |
| 1293 | |
| 1294 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1295 | |
| 1296 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1297 | return 0; |
| 1298 | } |
| 1299 | EXPORT_SYMBOL(iwl_legacy_mac_conf_tx); |
| 1300 | |
| 1301 | int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw *hw) |
| 1302 | { |
| 1303 | struct iwl_priv *priv = hw->priv; |
| 1304 | |
| 1305 | return priv->ibss_manager == IWL_IBSS_MANAGER; |
| 1306 | } |
| 1307 | EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon); |
| 1308 | |
| 1309 | static int |
| 1310 | iwl_legacy_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 1311 | { |
| 1312 | iwl_legacy_connection_init_rx_config(priv, ctx); |
| 1313 | |
| 1314 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
| 1315 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| 1316 | |
| 1317 | return iwl_legacy_commit_rxon(priv, ctx); |
| 1318 | } |
| 1319 | |
| 1320 | static int iwl_legacy_setup_interface(struct iwl_priv *priv, |
| 1321 | struct iwl_rxon_context *ctx) |
| 1322 | { |
| 1323 | struct ieee80211_vif *vif = ctx->vif; |
| 1324 | int err; |
| 1325 | |
| 1326 | lockdep_assert_held(&priv->mutex); |
| 1327 | |
| 1328 | /* |
| 1329 | * This variable will be correct only when there's just |
| 1330 | * a single context, but all code using it is for hardware |
| 1331 | * that supports only one context. |
| 1332 | */ |
| 1333 | priv->iw_mode = vif->type; |
| 1334 | |
| 1335 | ctx->is_active = true; |
| 1336 | |
| 1337 | err = iwl_legacy_set_mode(priv, ctx); |
| 1338 | if (err) { |
| 1339 | if (!ctx->always_active) |
| 1340 | ctx->is_active = false; |
| 1341 | return err; |
| 1342 | } |
| 1343 | |
| 1344 | return 0; |
| 1345 | } |
| 1346 | |
| 1347 | int |
| 1348 | iwl_legacy_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| 1349 | { |
| 1350 | struct iwl_priv *priv = hw->priv; |
| 1351 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1352 | struct iwl_rxon_context *tmp, *ctx = NULL; |
| 1353 | int err; |
| 1354 | |
| 1355 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
| 1356 | vif->type, vif->addr); |
| 1357 | |
| 1358 | mutex_lock(&priv->mutex); |
| 1359 | |
| 1360 | if (!iwl_legacy_is_ready_rf(priv)) { |
| 1361 | IWL_WARN(priv, "Try to add interface when device not ready\n"); |
| 1362 | err = -EINVAL; |
| 1363 | goto out; |
| 1364 | } |
| 1365 | |
| 1366 | for_each_context(priv, tmp) { |
| 1367 | u32 possible_modes = |
| 1368 | tmp->interface_modes | tmp->exclusive_interface_modes; |
| 1369 | |
| 1370 | if (tmp->vif) { |
| 1371 | /* check if this busy context is exclusive */ |
| 1372 | if (tmp->exclusive_interface_modes & |
| 1373 | BIT(tmp->vif->type)) { |
| 1374 | err = -EINVAL; |
| 1375 | goto out; |
| 1376 | } |
| 1377 | continue; |
| 1378 | } |
| 1379 | |
| 1380 | if (!(possible_modes & BIT(vif->type))) |
| 1381 | continue; |
| 1382 | |
| 1383 | /* have maybe usable context w/o interface */ |
| 1384 | ctx = tmp; |
| 1385 | break; |
| 1386 | } |
| 1387 | |
| 1388 | if (!ctx) { |
| 1389 | err = -EOPNOTSUPP; |
| 1390 | goto out; |
| 1391 | } |
| 1392 | |
| 1393 | vif_priv->ctx = ctx; |
| 1394 | ctx->vif = vif; |
| 1395 | |
| 1396 | err = iwl_legacy_setup_interface(priv, ctx); |
| 1397 | if (!err) |
| 1398 | goto out; |
| 1399 | |
| 1400 | ctx->vif = NULL; |
| 1401 | priv->iw_mode = NL80211_IFTYPE_STATION; |
| 1402 | out: |
| 1403 | mutex_unlock(&priv->mutex); |
| 1404 | |
| 1405 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1406 | return err; |
| 1407 | } |
| 1408 | EXPORT_SYMBOL(iwl_legacy_mac_add_interface); |
| 1409 | |
| 1410 | static void iwl_legacy_teardown_interface(struct iwl_priv *priv, |
| 1411 | struct ieee80211_vif *vif, |
| 1412 | bool mode_change) |
| 1413 | { |
| 1414 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 1415 | |
| 1416 | lockdep_assert_held(&priv->mutex); |
| 1417 | |
| 1418 | if (priv->scan_vif == vif) { |
| 1419 | iwl_legacy_scan_cancel_timeout(priv, 200); |
| 1420 | iwl_legacy_force_scan_end(priv); |
| 1421 | } |
| 1422 | |
| 1423 | if (!mode_change) { |
| 1424 | iwl_legacy_set_mode(priv, ctx); |
| 1425 | if (!ctx->always_active) |
| 1426 | ctx->is_active = false; |
| 1427 | } |
| 1428 | } |
| 1429 | |
| 1430 | void iwl_legacy_mac_remove_interface(struct ieee80211_hw *hw, |
| 1431 | struct ieee80211_vif *vif) |
| 1432 | { |
| 1433 | struct iwl_priv *priv = hw->priv; |
| 1434 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 1435 | |
| 1436 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1437 | |
| 1438 | mutex_lock(&priv->mutex); |
| 1439 | |
| 1440 | WARN_ON(ctx->vif != vif); |
| 1441 | ctx->vif = NULL; |
| 1442 | |
| 1443 | iwl_legacy_teardown_interface(priv, vif, false); |
| 1444 | |
| 1445 | memset(priv->bssid, 0, ETH_ALEN); |
| 1446 | mutex_unlock(&priv->mutex); |
| 1447 | |
| 1448 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1449 | |
| 1450 | } |
| 1451 | EXPORT_SYMBOL(iwl_legacy_mac_remove_interface); |
| 1452 | |
| 1453 | int iwl_legacy_alloc_txq_mem(struct iwl_priv *priv) |
| 1454 | { |
| 1455 | if (!priv->txq) |
| 1456 | priv->txq = kzalloc( |
| 1457 | sizeof(struct iwl_tx_queue) * |
| 1458 | priv->cfg->base_params->num_of_queues, |
| 1459 | GFP_KERNEL); |
| 1460 | if (!priv->txq) { |
| 1461 | IWL_ERR(priv, "Not enough memory for txq\n"); |
| 1462 | return -ENOMEM; |
| 1463 | } |
| 1464 | return 0; |
| 1465 | } |
| 1466 | EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem); |
| 1467 | |
| 1468 | void iwl_legacy_txq_mem(struct iwl_priv *priv) |
| 1469 | { |
| 1470 | kfree(priv->txq); |
| 1471 | priv->txq = NULL; |
| 1472 | } |
| 1473 | EXPORT_SYMBOL(iwl_legacy_txq_mem); |
| 1474 | |
| 1475 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS |
| 1476 | |
| 1477 | #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) |
| 1478 | |
| 1479 | void iwl_legacy_reset_traffic_log(struct iwl_priv *priv) |
| 1480 | { |
| 1481 | priv->tx_traffic_idx = 0; |
| 1482 | priv->rx_traffic_idx = 0; |
| 1483 | if (priv->tx_traffic) |
| 1484 | memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); |
| 1485 | if (priv->rx_traffic) |
| 1486 | memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); |
| 1487 | } |
| 1488 | |
| 1489 | int iwl_legacy_alloc_traffic_mem(struct iwl_priv *priv) |
| 1490 | { |
| 1491 | u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; |
| 1492 | |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 1493 | if (iwlegacy_debug_level & IWL_DL_TX) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1494 | if (!priv->tx_traffic) { |
| 1495 | priv->tx_traffic = |
| 1496 | kzalloc(traffic_size, GFP_KERNEL); |
| 1497 | if (!priv->tx_traffic) |
| 1498 | return -ENOMEM; |
| 1499 | } |
| 1500 | } |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 1501 | if (iwlegacy_debug_level & IWL_DL_RX) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1502 | if (!priv->rx_traffic) { |
| 1503 | priv->rx_traffic = |
| 1504 | kzalloc(traffic_size, GFP_KERNEL); |
| 1505 | if (!priv->rx_traffic) |
| 1506 | return -ENOMEM; |
| 1507 | } |
| 1508 | } |
| 1509 | iwl_legacy_reset_traffic_log(priv); |
| 1510 | return 0; |
| 1511 | } |
| 1512 | EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem); |
| 1513 | |
| 1514 | void iwl_legacy_free_traffic_mem(struct iwl_priv *priv) |
| 1515 | { |
| 1516 | kfree(priv->tx_traffic); |
| 1517 | priv->tx_traffic = NULL; |
| 1518 | |
| 1519 | kfree(priv->rx_traffic); |
| 1520 | priv->rx_traffic = NULL; |
| 1521 | } |
| 1522 | EXPORT_SYMBOL(iwl_legacy_free_traffic_mem); |
| 1523 | |
| 1524 | void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv *priv, |
| 1525 | u16 length, struct ieee80211_hdr *header) |
| 1526 | { |
| 1527 | __le16 fc; |
| 1528 | u16 len; |
| 1529 | |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 1530 | if (likely(!(iwlegacy_debug_level & IWL_DL_TX))) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1531 | return; |
| 1532 | |
| 1533 | if (!priv->tx_traffic) |
| 1534 | return; |
| 1535 | |
| 1536 | fc = header->frame_control; |
| 1537 | if (ieee80211_is_data(fc)) { |
| 1538 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) |
| 1539 | ? IWL_TRAFFIC_ENTRY_SIZE : length; |
| 1540 | memcpy((priv->tx_traffic + |
| 1541 | (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), |
| 1542 | header, len); |
| 1543 | priv->tx_traffic_idx = |
| 1544 | (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; |
| 1545 | } |
| 1546 | } |
| 1547 | EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame); |
| 1548 | |
| 1549 | void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv *priv, |
| 1550 | u16 length, struct ieee80211_hdr *header) |
| 1551 | { |
| 1552 | __le16 fc; |
| 1553 | u16 len; |
| 1554 | |
John W. Linville | ef33417 | 2011-02-25 15:51:01 -0500 | [diff] [blame] | 1555 | if (likely(!(iwlegacy_debug_level & IWL_DL_RX))) |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1556 | return; |
| 1557 | |
| 1558 | if (!priv->rx_traffic) |
| 1559 | return; |
| 1560 | |
| 1561 | fc = header->frame_control; |
| 1562 | if (ieee80211_is_data(fc)) { |
| 1563 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) |
| 1564 | ? IWL_TRAFFIC_ENTRY_SIZE : length; |
| 1565 | memcpy((priv->rx_traffic + |
| 1566 | (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), |
| 1567 | header, len); |
| 1568 | priv->rx_traffic_idx = |
| 1569 | (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; |
| 1570 | } |
| 1571 | } |
| 1572 | EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame); |
| 1573 | |
| 1574 | const char *iwl_legacy_get_mgmt_string(int cmd) |
| 1575 | { |
| 1576 | switch (cmd) { |
| 1577 | IWL_CMD(MANAGEMENT_ASSOC_REQ); |
| 1578 | IWL_CMD(MANAGEMENT_ASSOC_RESP); |
| 1579 | IWL_CMD(MANAGEMENT_REASSOC_REQ); |
| 1580 | IWL_CMD(MANAGEMENT_REASSOC_RESP); |
| 1581 | IWL_CMD(MANAGEMENT_PROBE_REQ); |
| 1582 | IWL_CMD(MANAGEMENT_PROBE_RESP); |
| 1583 | IWL_CMD(MANAGEMENT_BEACON); |
| 1584 | IWL_CMD(MANAGEMENT_ATIM); |
| 1585 | IWL_CMD(MANAGEMENT_DISASSOC); |
| 1586 | IWL_CMD(MANAGEMENT_AUTH); |
| 1587 | IWL_CMD(MANAGEMENT_DEAUTH); |
| 1588 | IWL_CMD(MANAGEMENT_ACTION); |
| 1589 | default: |
| 1590 | return "UNKNOWN"; |
| 1591 | |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | const char *iwl_legacy_get_ctrl_string(int cmd) |
| 1596 | { |
| 1597 | switch (cmd) { |
| 1598 | IWL_CMD(CONTROL_BACK_REQ); |
| 1599 | IWL_CMD(CONTROL_BACK); |
| 1600 | IWL_CMD(CONTROL_PSPOLL); |
| 1601 | IWL_CMD(CONTROL_RTS); |
| 1602 | IWL_CMD(CONTROL_CTS); |
| 1603 | IWL_CMD(CONTROL_ACK); |
| 1604 | IWL_CMD(CONTROL_CFEND); |
| 1605 | IWL_CMD(CONTROL_CFENDACK); |
| 1606 | default: |
| 1607 | return "UNKNOWN"; |
| 1608 | |
| 1609 | } |
| 1610 | } |
| 1611 | |
| 1612 | void iwl_legacy_clear_traffic_stats(struct iwl_priv *priv) |
| 1613 | { |
| 1614 | memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); |
| 1615 | memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); |
| 1616 | } |
| 1617 | |
| 1618 | /* |
| 1619 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS defined, |
| 1620 | * iwl_legacy_update_stats function will |
| 1621 | * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass |
| 1622 | * Use debugFs to display the rx/rx_statistics |
| 1623 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS not being defined, then no MGMT and CTRL |
| 1624 | * information will be recorded, but DATA pkt still will be recorded |
| 1625 | * for the reason of iwl_led.c need to control the led blinking based on |
| 1626 | * number of tx and rx data. |
| 1627 | * |
| 1628 | */ |
| 1629 | void |
| 1630 | iwl_legacy_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) |
| 1631 | { |
| 1632 | struct traffic_stats *stats; |
| 1633 | |
| 1634 | if (is_tx) |
| 1635 | stats = &priv->tx_stats; |
| 1636 | else |
| 1637 | stats = &priv->rx_stats; |
| 1638 | |
| 1639 | if (ieee80211_is_mgmt(fc)) { |
| 1640 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { |
| 1641 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): |
| 1642 | stats->mgmt[MANAGEMENT_ASSOC_REQ]++; |
| 1643 | break; |
| 1644 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): |
| 1645 | stats->mgmt[MANAGEMENT_ASSOC_RESP]++; |
| 1646 | break; |
| 1647 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): |
| 1648 | stats->mgmt[MANAGEMENT_REASSOC_REQ]++; |
| 1649 | break; |
| 1650 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): |
| 1651 | stats->mgmt[MANAGEMENT_REASSOC_RESP]++; |
| 1652 | break; |
| 1653 | case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): |
| 1654 | stats->mgmt[MANAGEMENT_PROBE_REQ]++; |
| 1655 | break; |
| 1656 | case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): |
| 1657 | stats->mgmt[MANAGEMENT_PROBE_RESP]++; |
| 1658 | break; |
| 1659 | case cpu_to_le16(IEEE80211_STYPE_BEACON): |
| 1660 | stats->mgmt[MANAGEMENT_BEACON]++; |
| 1661 | break; |
| 1662 | case cpu_to_le16(IEEE80211_STYPE_ATIM): |
| 1663 | stats->mgmt[MANAGEMENT_ATIM]++; |
| 1664 | break; |
| 1665 | case cpu_to_le16(IEEE80211_STYPE_DISASSOC): |
| 1666 | stats->mgmt[MANAGEMENT_DISASSOC]++; |
| 1667 | break; |
| 1668 | case cpu_to_le16(IEEE80211_STYPE_AUTH): |
| 1669 | stats->mgmt[MANAGEMENT_AUTH]++; |
| 1670 | break; |
| 1671 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): |
| 1672 | stats->mgmt[MANAGEMENT_DEAUTH]++; |
| 1673 | break; |
| 1674 | case cpu_to_le16(IEEE80211_STYPE_ACTION): |
| 1675 | stats->mgmt[MANAGEMENT_ACTION]++; |
| 1676 | break; |
| 1677 | } |
| 1678 | } else if (ieee80211_is_ctl(fc)) { |
| 1679 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { |
| 1680 | case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): |
| 1681 | stats->ctrl[CONTROL_BACK_REQ]++; |
| 1682 | break; |
| 1683 | case cpu_to_le16(IEEE80211_STYPE_BACK): |
| 1684 | stats->ctrl[CONTROL_BACK]++; |
| 1685 | break; |
| 1686 | case cpu_to_le16(IEEE80211_STYPE_PSPOLL): |
| 1687 | stats->ctrl[CONTROL_PSPOLL]++; |
| 1688 | break; |
| 1689 | case cpu_to_le16(IEEE80211_STYPE_RTS): |
| 1690 | stats->ctrl[CONTROL_RTS]++; |
| 1691 | break; |
| 1692 | case cpu_to_le16(IEEE80211_STYPE_CTS): |
| 1693 | stats->ctrl[CONTROL_CTS]++; |
| 1694 | break; |
| 1695 | case cpu_to_le16(IEEE80211_STYPE_ACK): |
| 1696 | stats->ctrl[CONTROL_ACK]++; |
| 1697 | break; |
| 1698 | case cpu_to_le16(IEEE80211_STYPE_CFEND): |
| 1699 | stats->ctrl[CONTROL_CFEND]++; |
| 1700 | break; |
| 1701 | case cpu_to_le16(IEEE80211_STYPE_CFENDACK): |
| 1702 | stats->ctrl[CONTROL_CFENDACK]++; |
| 1703 | break; |
| 1704 | } |
| 1705 | } else { |
| 1706 | /* data */ |
| 1707 | stats->data_cnt++; |
| 1708 | stats->data_bytes += len; |
| 1709 | } |
| 1710 | } |
| 1711 | EXPORT_SYMBOL(iwl_legacy_update_stats); |
| 1712 | #endif |
| 1713 | |
| 1714 | static void _iwl_legacy_force_rf_reset(struct iwl_priv *priv) |
| 1715 | { |
| 1716 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 1717 | return; |
| 1718 | |
| 1719 | if (!iwl_legacy_is_any_associated(priv)) { |
| 1720 | IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); |
| 1721 | return; |
| 1722 | } |
| 1723 | /* |
| 1724 | * There is no easy and better way to force reset the radio, |
| 1725 | * the only known method is switching channel which will force to |
| 1726 | * reset and tune the radio. |
| 1727 | * Use internal short scan (single channel) operation to should |
| 1728 | * achieve this objective. |
| 1729 | * Driver should reset the radio when number of consecutive missed |
| 1730 | * beacon, or any other uCode error condition detected. |
| 1731 | */ |
| 1732 | IWL_DEBUG_INFO(priv, "perform radio reset.\n"); |
| 1733 | iwl_legacy_internal_short_hw_scan(priv); |
| 1734 | } |
| 1735 | |
| 1736 | |
| 1737 | int iwl_legacy_force_reset(struct iwl_priv *priv, int mode, bool external) |
| 1738 | { |
| 1739 | struct iwl_force_reset *force_reset; |
| 1740 | |
| 1741 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 1742 | return -EINVAL; |
| 1743 | |
| 1744 | if (mode >= IWL_MAX_FORCE_RESET) { |
| 1745 | IWL_DEBUG_INFO(priv, "invalid reset request.\n"); |
| 1746 | return -EINVAL; |
| 1747 | } |
| 1748 | force_reset = &priv->force_reset[mode]; |
| 1749 | force_reset->reset_request_count++; |
| 1750 | if (!external) { |
| 1751 | if (force_reset->last_force_reset_jiffies && |
| 1752 | time_after(force_reset->last_force_reset_jiffies + |
| 1753 | force_reset->reset_duration, jiffies)) { |
| 1754 | IWL_DEBUG_INFO(priv, "force reset rejected\n"); |
| 1755 | force_reset->reset_reject_count++; |
| 1756 | return -EAGAIN; |
| 1757 | } |
| 1758 | } |
| 1759 | force_reset->reset_success_count++; |
| 1760 | force_reset->last_force_reset_jiffies = jiffies; |
| 1761 | IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); |
| 1762 | switch (mode) { |
| 1763 | case IWL_RF_RESET: |
| 1764 | _iwl_legacy_force_rf_reset(priv); |
| 1765 | break; |
| 1766 | case IWL_FW_RESET: |
| 1767 | /* |
| 1768 | * if the request is from external(ex: debugfs), |
| 1769 | * then always perform the request in regardless the module |
| 1770 | * parameter setting |
| 1771 | * if the request is from internal (uCode error or driver |
| 1772 | * detect failure), then fw_restart module parameter |
| 1773 | * need to be check before performing firmware reload |
| 1774 | */ |
| 1775 | if (!external && !priv->cfg->mod_params->restart_fw) { |
| 1776 | IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " |
| 1777 | "module parameter setting\n"); |
| 1778 | break; |
| 1779 | } |
| 1780 | IWL_ERR(priv, "On demand firmware reload\n"); |
| 1781 | /* Set the FW error flag -- cleared on iwl_down */ |
| 1782 | set_bit(STATUS_FW_ERROR, &priv->status); |
| 1783 | wake_up_interruptible(&priv->wait_command_queue); |
| 1784 | /* |
| 1785 | * Keep the restart process from trying to send host |
| 1786 | * commands by clearing the INIT status bit |
| 1787 | */ |
| 1788 | clear_bit(STATUS_READY, &priv->status); |
| 1789 | queue_work(priv->workqueue, &priv->restart); |
| 1790 | break; |
| 1791 | } |
| 1792 | return 0; |
| 1793 | } |
| 1794 | |
| 1795 | int |
| 1796 | iwl_legacy_mac_change_interface(struct ieee80211_hw *hw, |
| 1797 | struct ieee80211_vif *vif, |
| 1798 | enum nl80211_iftype newtype, bool newp2p) |
| 1799 | { |
| 1800 | struct iwl_priv *priv = hw->priv; |
| 1801 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 1802 | struct iwl_rxon_context *tmp; |
| 1803 | u32 interface_modes; |
| 1804 | int err; |
| 1805 | |
| 1806 | newtype = ieee80211_iftype_p2p(newtype, newp2p); |
| 1807 | |
| 1808 | mutex_lock(&priv->mutex); |
| 1809 | |
Johannes Berg | ffd8c74 | 2011-03-29 15:28:11 +0200 | [diff] [blame] | 1810 | if (!ctx->vif || !iwl_legacy_is_ready_rf(priv)) { |
| 1811 | /* |
| 1812 | * Huh? But wait ... this can maybe happen when |
| 1813 | * we're in the middle of a firmware restart! |
| 1814 | */ |
| 1815 | err = -EBUSY; |
| 1816 | goto out; |
| 1817 | } |
| 1818 | |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1819 | interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; |
| 1820 | |
| 1821 | if (!(interface_modes & BIT(newtype))) { |
| 1822 | err = -EBUSY; |
| 1823 | goto out; |
| 1824 | } |
| 1825 | |
| 1826 | if (ctx->exclusive_interface_modes & BIT(newtype)) { |
| 1827 | for_each_context(priv, tmp) { |
| 1828 | if (ctx == tmp) |
| 1829 | continue; |
| 1830 | |
| 1831 | if (!tmp->vif) |
| 1832 | continue; |
| 1833 | |
| 1834 | /* |
| 1835 | * The current mode switch would be exclusive, but |
| 1836 | * another context is active ... refuse the switch. |
| 1837 | */ |
| 1838 | err = -EBUSY; |
| 1839 | goto out; |
| 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | /* success */ |
| 1844 | iwl_legacy_teardown_interface(priv, vif, true); |
| 1845 | vif->type = newtype; |
Johannes Berg | ffd8c74 | 2011-03-29 15:28:11 +0200 | [diff] [blame] | 1846 | vif->p2p = newp2p; |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1847 | err = iwl_legacy_setup_interface(priv, ctx); |
| 1848 | WARN_ON(err); |
| 1849 | /* |
| 1850 | * We've switched internally, but submitting to the |
| 1851 | * device may have failed for some reason. Mask this |
| 1852 | * error, because otherwise mac80211 will not switch |
| 1853 | * (and set the interface type back) and we'll be |
| 1854 | * out of sync with it. |
| 1855 | */ |
| 1856 | err = 0; |
| 1857 | |
| 1858 | out: |
| 1859 | mutex_unlock(&priv->mutex); |
| 1860 | return err; |
| 1861 | } |
| 1862 | EXPORT_SYMBOL(iwl_legacy_mac_change_interface); |
| 1863 | |
| 1864 | /* |
| 1865 | * On every watchdog tick we check (latest) time stamp. If it does not |
| 1866 | * change during timeout period and queue is not empty we reset firmware. |
| 1867 | */ |
| 1868 | static int iwl_legacy_check_stuck_queue(struct iwl_priv *priv, int cnt) |
| 1869 | { |
| 1870 | struct iwl_tx_queue *txq = &priv->txq[cnt]; |
| 1871 | struct iwl_queue *q = &txq->q; |
| 1872 | unsigned long timeout; |
| 1873 | int ret; |
| 1874 | |
| 1875 | if (q->read_ptr == q->write_ptr) { |
| 1876 | txq->time_stamp = jiffies; |
| 1877 | return 0; |
| 1878 | } |
| 1879 | |
| 1880 | timeout = txq->time_stamp + |
| 1881 | msecs_to_jiffies(priv->cfg->base_params->wd_timeout); |
| 1882 | |
| 1883 | if (time_after(jiffies, timeout)) { |
| 1884 | IWL_ERR(priv, "Queue %d stuck for %u ms.\n", |
| 1885 | q->id, priv->cfg->base_params->wd_timeout); |
| 1886 | ret = iwl_legacy_force_reset(priv, IWL_FW_RESET, false); |
| 1887 | return (ret == -EAGAIN) ? 0 : 1; |
| 1888 | } |
| 1889 | |
| 1890 | return 0; |
| 1891 | } |
| 1892 | |
| 1893 | /* |
| 1894 | * Making watchdog tick be a quarter of timeout assure we will |
| 1895 | * discover the queue hung between timeout and 1.25*timeout |
| 1896 | */ |
| 1897 | #define IWL_WD_TICK(timeout) ((timeout) / 4) |
| 1898 | |
| 1899 | /* |
| 1900 | * Watchdog timer callback, we check each tx queue for stuck, if if hung |
| 1901 | * we reset the firmware. If everything is fine just rearm the timer. |
| 1902 | */ |
| 1903 | void iwl_legacy_bg_watchdog(unsigned long data) |
| 1904 | { |
| 1905 | struct iwl_priv *priv = (struct iwl_priv *)data; |
| 1906 | int cnt; |
| 1907 | unsigned long timeout; |
| 1908 | |
| 1909 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 1910 | return; |
| 1911 | |
| 1912 | timeout = priv->cfg->base_params->wd_timeout; |
| 1913 | if (timeout == 0) |
| 1914 | return; |
| 1915 | |
| 1916 | /* monitor and check for stuck cmd queue */ |
| 1917 | if (iwl_legacy_check_stuck_queue(priv, priv->cmd_queue)) |
| 1918 | return; |
| 1919 | |
| 1920 | /* monitor and check for other stuck queues */ |
| 1921 | if (iwl_legacy_is_any_associated(priv)) { |
| 1922 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { |
| 1923 | /* skip as we already checked the command queue */ |
| 1924 | if (cnt == priv->cmd_queue) |
| 1925 | continue; |
| 1926 | if (iwl_legacy_check_stuck_queue(priv, cnt)) |
| 1927 | return; |
| 1928 | } |
| 1929 | } |
| 1930 | |
| 1931 | mod_timer(&priv->watchdog, jiffies + |
| 1932 | msecs_to_jiffies(IWL_WD_TICK(timeout))); |
| 1933 | } |
| 1934 | EXPORT_SYMBOL(iwl_legacy_bg_watchdog); |
| 1935 | |
| 1936 | void iwl_legacy_setup_watchdog(struct iwl_priv *priv) |
| 1937 | { |
| 1938 | unsigned int timeout = priv->cfg->base_params->wd_timeout; |
| 1939 | |
| 1940 | if (timeout) |
| 1941 | mod_timer(&priv->watchdog, |
| 1942 | jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); |
| 1943 | else |
| 1944 | del_timer(&priv->watchdog); |
| 1945 | } |
| 1946 | EXPORT_SYMBOL(iwl_legacy_setup_watchdog); |
| 1947 | |
| 1948 | /* |
| 1949 | * extended beacon time format |
| 1950 | * time in usec will be changed into a 32-bit value in extended:internal format |
| 1951 | * the extended part is the beacon counts |
| 1952 | * the internal part is the time in usec within one beacon interval |
| 1953 | */ |
| 1954 | u32 |
| 1955 | iwl_legacy_usecs_to_beacons(struct iwl_priv *priv, |
| 1956 | u32 usec, u32 beacon_interval) |
| 1957 | { |
| 1958 | u32 quot; |
| 1959 | u32 rem; |
| 1960 | u32 interval = beacon_interval * TIME_UNIT; |
| 1961 | |
| 1962 | if (!interval || !usec) |
| 1963 | return 0; |
| 1964 | |
| 1965 | quot = (usec / interval) & |
| 1966 | (iwl_legacy_beacon_time_mask_high(priv, |
| 1967 | priv->hw_params.beacon_time_tsf_bits) >> |
| 1968 | priv->hw_params.beacon_time_tsf_bits); |
| 1969 | rem = (usec % interval) & iwl_legacy_beacon_time_mask_low(priv, |
| 1970 | priv->hw_params.beacon_time_tsf_bits); |
| 1971 | |
| 1972 | return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; |
| 1973 | } |
| 1974 | EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons); |
| 1975 | |
| 1976 | /* base is usually what we get from ucode with each received frame, |
| 1977 | * the same as HW timer counter counting down |
| 1978 | */ |
| 1979 | __le32 iwl_legacy_add_beacon_time(struct iwl_priv *priv, u32 base, |
| 1980 | u32 addon, u32 beacon_interval) |
| 1981 | { |
| 1982 | u32 base_low = base & iwl_legacy_beacon_time_mask_low(priv, |
| 1983 | priv->hw_params.beacon_time_tsf_bits); |
| 1984 | u32 addon_low = addon & iwl_legacy_beacon_time_mask_low(priv, |
| 1985 | priv->hw_params.beacon_time_tsf_bits); |
| 1986 | u32 interval = beacon_interval * TIME_UNIT; |
| 1987 | u32 res = (base & iwl_legacy_beacon_time_mask_high(priv, |
| 1988 | priv->hw_params.beacon_time_tsf_bits)) + |
| 1989 | (addon & iwl_legacy_beacon_time_mask_high(priv, |
| 1990 | priv->hw_params.beacon_time_tsf_bits)); |
| 1991 | |
| 1992 | if (base_low > addon_low) |
| 1993 | res += base_low - addon_low; |
| 1994 | else if (base_low < addon_low) { |
| 1995 | res += interval + base_low - addon_low; |
| 1996 | res += (1 << priv->hw_params.beacon_time_tsf_bits); |
| 1997 | } else |
| 1998 | res += (1 << priv->hw_params.beacon_time_tsf_bits); |
| 1999 | |
| 2000 | return cpu_to_le32(res); |
| 2001 | } |
| 2002 | EXPORT_SYMBOL(iwl_legacy_add_beacon_time); |
| 2003 | |
| 2004 | #ifdef CONFIG_PM |
| 2005 | |
| 2006 | int iwl_legacy_pci_suspend(struct device *device) |
| 2007 | { |
| 2008 | struct pci_dev *pdev = to_pci_dev(device); |
| 2009 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
| 2010 | |
| 2011 | /* |
| 2012 | * This function is called when system goes into suspend state |
| 2013 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function |
| 2014 | * first but since iwl_mac_stop() has no knowledge of who the caller is, |
| 2015 | * it will not call apm_ops.stop() to stop the DMA operation. |
| 2016 | * Calling apm_ops.stop here to make sure we stop the DMA. |
| 2017 | */ |
| 2018 | iwl_legacy_apm_stop(priv); |
| 2019 | |
| 2020 | return 0; |
| 2021 | } |
| 2022 | EXPORT_SYMBOL(iwl_legacy_pci_suspend); |
| 2023 | |
| 2024 | int iwl_legacy_pci_resume(struct device *device) |
| 2025 | { |
| 2026 | struct pci_dev *pdev = to_pci_dev(device); |
| 2027 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
| 2028 | bool hw_rfkill = false; |
| 2029 | |
| 2030 | /* |
| 2031 | * We disable the RETRY_TIMEOUT register (0x41) to keep |
| 2032 | * PCI Tx retries from interfering with C3 CPU state. |
| 2033 | */ |
| 2034 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); |
| 2035 | |
| 2036 | iwl_legacy_enable_interrupts(priv); |
| 2037 | |
| 2038 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
| 2039 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
| 2040 | hw_rfkill = true; |
| 2041 | |
| 2042 | if (hw_rfkill) |
| 2043 | set_bit(STATUS_RF_KILL_HW, &priv->status); |
| 2044 | else |
| 2045 | clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| 2046 | |
| 2047 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); |
| 2048 | |
| 2049 | return 0; |
| 2050 | } |
| 2051 | EXPORT_SYMBOL(iwl_legacy_pci_resume); |
| 2052 | |
| 2053 | const struct dev_pm_ops iwl_legacy_pm_ops = { |
| 2054 | .suspend = iwl_legacy_pci_suspend, |
| 2055 | .resume = iwl_legacy_pci_resume, |
| 2056 | .freeze = iwl_legacy_pci_suspend, |
| 2057 | .thaw = iwl_legacy_pci_resume, |
| 2058 | .poweroff = iwl_legacy_pci_suspend, |
| 2059 | .restore = iwl_legacy_pci_resume, |
| 2060 | }; |
| 2061 | EXPORT_SYMBOL(iwl_legacy_pm_ops); |
| 2062 | |
| 2063 | #endif /* CONFIG_PM */ |
| 2064 | |
| 2065 | static void |
| 2066 | iwl_legacy_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 2067 | { |
| 2068 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 2069 | return; |
| 2070 | |
| 2071 | if (!ctx->is_active) |
| 2072 | return; |
| 2073 | |
| 2074 | ctx->qos_data.def_qos_parm.qos_flags = 0; |
| 2075 | |
| 2076 | if (ctx->qos_data.qos_active) |
| 2077 | ctx->qos_data.def_qos_parm.qos_flags |= |
| 2078 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
| 2079 | |
| 2080 | if (ctx->ht.enabled) |
| 2081 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
| 2082 | |
| 2083 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
| 2084 | ctx->qos_data.qos_active, |
| 2085 | ctx->qos_data.def_qos_parm.qos_flags); |
| 2086 | |
| 2087 | iwl_legacy_send_cmd_pdu_async(priv, ctx->qos_cmd, |
| 2088 | sizeof(struct iwl_qosparam_cmd), |
| 2089 | &ctx->qos_data.def_qos_parm, NULL); |
| 2090 | } |
| 2091 | |
| 2092 | /** |
| 2093 | * iwl_legacy_mac_config - mac80211 config callback |
| 2094 | */ |
| 2095 | int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed) |
| 2096 | { |
| 2097 | struct iwl_priv *priv = hw->priv; |
| 2098 | const struct iwl_channel_info *ch_info; |
| 2099 | struct ieee80211_conf *conf = &hw->conf; |
| 2100 | struct ieee80211_channel *channel = conf->channel; |
| 2101 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
| 2102 | struct iwl_rxon_context *ctx; |
| 2103 | unsigned long flags = 0; |
| 2104 | int ret = 0; |
| 2105 | u16 ch; |
| 2106 | int scan_active = 0; |
| 2107 | bool ht_changed[NUM_IWL_RXON_CTX] = {}; |
| 2108 | |
| 2109 | if (WARN_ON(!priv->cfg->ops->legacy)) |
| 2110 | return -EOPNOTSUPP; |
| 2111 | |
| 2112 | mutex_lock(&priv->mutex); |
| 2113 | |
| 2114 | IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", |
| 2115 | channel->hw_value, changed); |
| 2116 | |
Stanislaw Gruszka | 8eb0ac7 | 2011-04-28 11:51:27 +0200 | [diff] [blame^] | 2117 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2118 | scan_active = 1; |
Stanislaw Gruszka | 8eb0ac7 | 2011-04-28 11:51:27 +0200 | [diff] [blame^] | 2119 | IWL_DEBUG_MAC80211(priv, "scan active\n"); |
Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 2120 | } |
| 2121 | |
| 2122 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | |
| 2123 | IEEE80211_CONF_CHANGE_CHANNEL)) { |
| 2124 | /* mac80211 uses static for non-HT which is what we want */ |
| 2125 | priv->current_ht_config.smps = conf->smps_mode; |
| 2126 | |
| 2127 | /* |
| 2128 | * Recalculate chain counts. |
| 2129 | * |
| 2130 | * If monitor mode is enabled then mac80211 will |
| 2131 | * set up the SM PS mode to OFF if an HT channel is |
| 2132 | * configured. |
| 2133 | */ |
| 2134 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
| 2135 | for_each_context(priv, ctx) |
| 2136 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| 2137 | } |
| 2138 | |
| 2139 | /* during scanning mac80211 will delay channel setting until |
| 2140 | * scan finish with changed = 0 |
| 2141 | */ |
| 2142 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { |
| 2143 | if (scan_active) |
| 2144 | goto set_ch_out; |
| 2145 | |
| 2146 | ch = channel->hw_value; |
| 2147 | ch_info = iwl_legacy_get_channel_info(priv, channel->band, ch); |
| 2148 | if (!iwl_legacy_is_channel_valid(ch_info)) { |
| 2149 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); |
| 2150 | ret = -EINVAL; |
| 2151 | goto set_ch_out; |
| 2152 | } |
| 2153 | |
| 2154 | spin_lock_irqsave(&priv->lock, flags); |
| 2155 | |
| 2156 | for_each_context(priv, ctx) { |
| 2157 | /* Configure HT40 channels */ |
| 2158 | if (ctx->ht.enabled != conf_is_ht(conf)) { |
| 2159 | ctx->ht.enabled = conf_is_ht(conf); |
| 2160 | ht_changed[ctx->ctxid] = true; |
| 2161 | } |
| 2162 | if (ctx->ht.enabled) { |
| 2163 | if (conf_is_ht40_minus(conf)) { |
| 2164 | ctx->ht.extension_chan_offset = |
| 2165 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
| 2166 | ctx->ht.is_40mhz = true; |
| 2167 | } else if (conf_is_ht40_plus(conf)) { |
| 2168 | ctx->ht.extension_chan_offset = |
| 2169 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| 2170 | ctx->ht.is_40mhz = true; |
| 2171 | } else { |
| 2172 | ctx->ht.extension_chan_offset = |
| 2173 | IEEE80211_HT_PARAM_CHA_SEC_NONE; |
| 2174 | ctx->ht.is_40mhz = false; |
| 2175 | } |
| 2176 | } else |
| 2177 | ctx->ht.is_40mhz = false; |
| 2178 | |
| 2179 | /* |
| 2180 | * Default to no protection. Protection mode will |
| 2181 | * later be set from BSS config in iwl_ht_conf |
| 2182 | */ |
| 2183 | ctx->ht.protection = |
| 2184 | IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
| 2185 | |
| 2186 | /* if we are switching from ht to 2.4 clear flags |
| 2187 | * from any ht related info since 2.4 does not |
| 2188 | * support ht */ |
| 2189 | if ((le16_to_cpu(ctx->staging.channel) != ch)) |
| 2190 | ctx->staging.flags = 0; |
| 2191 | |
| 2192 | iwl_legacy_set_rxon_channel(priv, channel, ctx); |
| 2193 | iwl_legacy_set_rxon_ht(priv, ht_conf); |
| 2194 | |
| 2195 | iwl_legacy_set_flags_for_band(priv, ctx, channel->band, |
| 2196 | ctx->vif); |
| 2197 | } |
| 2198 | |
| 2199 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2200 | |
| 2201 | if (priv->cfg->ops->legacy->update_bcast_stations) |
| 2202 | ret = |
| 2203 | priv->cfg->ops->legacy->update_bcast_stations(priv); |
| 2204 | |
| 2205 | set_ch_out: |
| 2206 | /* The list of supported rates and rate mask can be different |
| 2207 | * for each band; since the band may have changed, reset |
| 2208 | * the rate mask to what mac80211 lists */ |
| 2209 | iwl_legacy_set_rate(priv); |
| 2210 | } |
| 2211 | |
| 2212 | if (changed & (IEEE80211_CONF_CHANGE_PS | |
| 2213 | IEEE80211_CONF_CHANGE_IDLE)) { |
| 2214 | ret = iwl_legacy_power_update_mode(priv, false); |
| 2215 | if (ret) |
| 2216 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); |
| 2217 | } |
| 2218 | |
| 2219 | if (changed & IEEE80211_CONF_CHANGE_POWER) { |
| 2220 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", |
| 2221 | priv->tx_power_user_lmt, conf->power_level); |
| 2222 | |
| 2223 | iwl_legacy_set_tx_power(priv, conf->power_level, false); |
| 2224 | } |
| 2225 | |
| 2226 | if (!iwl_legacy_is_ready(priv)) { |
| 2227 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
| 2228 | goto out; |
| 2229 | } |
| 2230 | |
| 2231 | if (scan_active) |
| 2232 | goto out; |
| 2233 | |
| 2234 | for_each_context(priv, ctx) { |
| 2235 | if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging))) |
| 2236 | iwl_legacy_commit_rxon(priv, ctx); |
| 2237 | else |
| 2238 | IWL_DEBUG_INFO(priv, |
| 2239 | "Not re-sending same RXON configuration.\n"); |
| 2240 | if (ht_changed[ctx->ctxid]) |
| 2241 | iwl_legacy_update_qos(priv, ctx); |
| 2242 | } |
| 2243 | |
| 2244 | out: |
| 2245 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 2246 | mutex_unlock(&priv->mutex); |
| 2247 | return ret; |
| 2248 | } |
| 2249 | EXPORT_SYMBOL(iwl_legacy_mac_config); |
| 2250 | |
| 2251 | void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw) |
| 2252 | { |
| 2253 | struct iwl_priv *priv = hw->priv; |
| 2254 | unsigned long flags; |
| 2255 | /* IBSS can only be the IWL_RXON_CTX_BSS context */ |
| 2256 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 2257 | |
| 2258 | if (WARN_ON(!priv->cfg->ops->legacy)) |
| 2259 | return; |
| 2260 | |
| 2261 | mutex_lock(&priv->mutex); |
| 2262 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 2263 | |
| 2264 | spin_lock_irqsave(&priv->lock, flags); |
| 2265 | memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); |
| 2266 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2267 | |
| 2268 | spin_lock_irqsave(&priv->lock, flags); |
| 2269 | |
| 2270 | /* new association get rid of ibss beacon skb */ |
| 2271 | if (priv->beacon_skb) |
| 2272 | dev_kfree_skb(priv->beacon_skb); |
| 2273 | |
| 2274 | priv->beacon_skb = NULL; |
| 2275 | |
| 2276 | priv->timestamp = 0; |
| 2277 | |
| 2278 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2279 | |
| 2280 | iwl_legacy_scan_cancel_timeout(priv, 100); |
| 2281 | if (!iwl_legacy_is_ready_rf(priv)) { |
| 2282 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
| 2283 | mutex_unlock(&priv->mutex); |
| 2284 | return; |
| 2285 | } |
| 2286 | |
| 2287 | /* we are restarting association process |
| 2288 | * clear RXON_FILTER_ASSOC_MSK bit |
| 2289 | */ |
| 2290 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| 2291 | iwl_legacy_commit_rxon(priv, ctx); |
| 2292 | |
| 2293 | iwl_legacy_set_rate(priv); |
| 2294 | |
| 2295 | mutex_unlock(&priv->mutex); |
| 2296 | |
| 2297 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 2298 | } |
| 2299 | EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf); |
| 2300 | |
| 2301 | static void iwl_legacy_ht_conf(struct iwl_priv *priv, |
| 2302 | struct ieee80211_vif *vif) |
| 2303 | { |
| 2304 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
| 2305 | struct ieee80211_sta *sta; |
| 2306 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
| 2307 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 2308 | |
| 2309 | IWL_DEBUG_ASSOC(priv, "enter:\n"); |
| 2310 | |
| 2311 | if (!ctx->ht.enabled) |
| 2312 | return; |
| 2313 | |
| 2314 | ctx->ht.protection = |
| 2315 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
| 2316 | ctx->ht.non_gf_sta_present = |
| 2317 | !!(bss_conf->ht_operation_mode & |
| 2318 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); |
| 2319 | |
| 2320 | ht_conf->single_chain_sufficient = false; |
| 2321 | |
| 2322 | switch (vif->type) { |
| 2323 | case NL80211_IFTYPE_STATION: |
| 2324 | rcu_read_lock(); |
| 2325 | sta = ieee80211_find_sta(vif, bss_conf->bssid); |
| 2326 | if (sta) { |
| 2327 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
| 2328 | int maxstreams; |
| 2329 | |
| 2330 | maxstreams = (ht_cap->mcs.tx_params & |
| 2331 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
| 2332 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; |
| 2333 | maxstreams += 1; |
| 2334 | |
| 2335 | if ((ht_cap->mcs.rx_mask[1] == 0) && |
| 2336 | (ht_cap->mcs.rx_mask[2] == 0)) |
| 2337 | ht_conf->single_chain_sufficient = true; |
| 2338 | if (maxstreams <= 1) |
| 2339 | ht_conf->single_chain_sufficient = true; |
| 2340 | } else { |
| 2341 | /* |
| 2342 | * If at all, this can only happen through a race |
| 2343 | * when the AP disconnects us while we're still |
| 2344 | * setting up the connection, in that case mac80211 |
| 2345 | * will soon tell us about that. |
| 2346 | */ |
| 2347 | ht_conf->single_chain_sufficient = true; |
| 2348 | } |
| 2349 | rcu_read_unlock(); |
| 2350 | break; |
| 2351 | case NL80211_IFTYPE_ADHOC: |
| 2352 | ht_conf->single_chain_sufficient = true; |
| 2353 | break; |
| 2354 | default: |
| 2355 | break; |
| 2356 | } |
| 2357 | |
| 2358 | IWL_DEBUG_ASSOC(priv, "leave\n"); |
| 2359 | } |
| 2360 | |
| 2361 | static inline void iwl_legacy_set_no_assoc(struct iwl_priv *priv, |
| 2362 | struct ieee80211_vif *vif) |
| 2363 | { |
| 2364 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 2365 | |
| 2366 | /* |
| 2367 | * inform the ucode that there is no longer an |
| 2368 | * association and that no more packets should be |
| 2369 | * sent |
| 2370 | */ |
| 2371 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| 2372 | ctx->staging.assoc_id = 0; |
| 2373 | iwl_legacy_commit_rxon(priv, ctx); |
| 2374 | } |
| 2375 | |
| 2376 | static void iwl_legacy_beacon_update(struct ieee80211_hw *hw, |
| 2377 | struct ieee80211_vif *vif) |
| 2378 | { |
| 2379 | struct iwl_priv *priv = hw->priv; |
| 2380 | unsigned long flags; |
| 2381 | __le64 timestamp; |
| 2382 | struct sk_buff *skb = ieee80211_beacon_get(hw, vif); |
| 2383 | |
| 2384 | if (!skb) |
| 2385 | return; |
| 2386 | |
| 2387 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 2388 | |
| 2389 | lockdep_assert_held(&priv->mutex); |
| 2390 | |
| 2391 | if (!priv->beacon_ctx) { |
| 2392 | IWL_ERR(priv, "update beacon but no beacon context!\n"); |
| 2393 | dev_kfree_skb(skb); |
| 2394 | return; |
| 2395 | } |
| 2396 | |
| 2397 | spin_lock_irqsave(&priv->lock, flags); |
| 2398 | |
| 2399 | if (priv->beacon_skb) |
| 2400 | dev_kfree_skb(priv->beacon_skb); |
| 2401 | |
| 2402 | priv->beacon_skb = skb; |
| 2403 | |
| 2404 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; |
| 2405 | priv->timestamp = le64_to_cpu(timestamp); |
| 2406 | |
| 2407 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 2408 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2409 | |
| 2410 | if (!iwl_legacy_is_ready_rf(priv)) { |
| 2411 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
| 2412 | return; |
| 2413 | } |
| 2414 | |
| 2415 | priv->cfg->ops->legacy->post_associate(priv); |
| 2416 | } |
| 2417 | |
| 2418 | void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, |
| 2419 | struct ieee80211_vif *vif, |
| 2420 | struct ieee80211_bss_conf *bss_conf, |
| 2421 | u32 changes) |
| 2422 | { |
| 2423 | struct iwl_priv *priv = hw->priv; |
| 2424 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| 2425 | int ret; |
| 2426 | |
| 2427 | if (WARN_ON(!priv->cfg->ops->legacy)) |
| 2428 | return; |
| 2429 | |
| 2430 | IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); |
| 2431 | |
| 2432 | if (!iwl_legacy_is_alive(priv)) |
| 2433 | return; |
| 2434 | |
| 2435 | mutex_lock(&priv->mutex); |
| 2436 | |
| 2437 | if (changes & BSS_CHANGED_QOS) { |
| 2438 | unsigned long flags; |
| 2439 | |
| 2440 | spin_lock_irqsave(&priv->lock, flags); |
| 2441 | ctx->qos_data.qos_active = bss_conf->qos; |
| 2442 | iwl_legacy_update_qos(priv, ctx); |
| 2443 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2444 | } |
| 2445 | |
| 2446 | if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| 2447 | /* |
| 2448 | * the add_interface code must make sure we only ever |
| 2449 | * have a single interface that could be beaconing at |
| 2450 | * any time. |
| 2451 | */ |
| 2452 | if (vif->bss_conf.enable_beacon) |
| 2453 | priv->beacon_ctx = ctx; |
| 2454 | else |
| 2455 | priv->beacon_ctx = NULL; |
| 2456 | } |
| 2457 | |
| 2458 | if (changes & BSS_CHANGED_BSSID) { |
| 2459 | IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); |
| 2460 | |
| 2461 | /* |
| 2462 | * If there is currently a HW scan going on in the |
| 2463 | * background then we need to cancel it else the RXON |
| 2464 | * below/in post_associate will fail. |
| 2465 | */ |
| 2466 | if (iwl_legacy_scan_cancel_timeout(priv, 100)) { |
| 2467 | IWL_WARN(priv, |
| 2468 | "Aborted scan still in progress after 100ms\n"); |
| 2469 | IWL_DEBUG_MAC80211(priv, |
| 2470 | "leaving - scan abort failed.\n"); |
| 2471 | mutex_unlock(&priv->mutex); |
| 2472 | return; |
| 2473 | } |
| 2474 | |
| 2475 | /* mac80211 only sets assoc when in STATION mode */ |
| 2476 | if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { |
| 2477 | memcpy(ctx->staging.bssid_addr, |
| 2478 | bss_conf->bssid, ETH_ALEN); |
| 2479 | |
| 2480 | /* currently needed in a few places */ |
| 2481 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); |
| 2482 | } else { |
| 2483 | ctx->staging.filter_flags &= |
| 2484 | ~RXON_FILTER_ASSOC_MSK; |
| 2485 | } |
| 2486 | |
| 2487 | } |
| 2488 | |
| 2489 | /* |
| 2490 | * This needs to be after setting the BSSID in case |
| 2491 | * mac80211 decides to do both changes at once because |
| 2492 | * it will invoke post_associate. |
| 2493 | */ |
| 2494 | if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) |
| 2495 | iwl_legacy_beacon_update(hw, vif); |
| 2496 | |
| 2497 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
| 2498 | IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", |
| 2499 | bss_conf->use_short_preamble); |
| 2500 | if (bss_conf->use_short_preamble) |
| 2501 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| 2502 | else |
| 2503 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| 2504 | } |
| 2505 | |
| 2506 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { |
| 2507 | IWL_DEBUG_MAC80211(priv, |
| 2508 | "ERP_CTS %d\n", bss_conf->use_cts_prot); |
| 2509 | if (bss_conf->use_cts_prot && |
| 2510 | (priv->band != IEEE80211_BAND_5GHZ)) |
| 2511 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; |
| 2512 | else |
| 2513 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
| 2514 | if (bss_conf->use_cts_prot) |
| 2515 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; |
| 2516 | else |
| 2517 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; |
| 2518 | } |
| 2519 | |
| 2520 | if (changes & BSS_CHANGED_BASIC_RATES) { |
| 2521 | /* XXX use this information |
| 2522 | * |
| 2523 | * To do that, remove code from iwl_legacy_set_rate() and put something |
| 2524 | * like this here: |
| 2525 | * |
| 2526 | if (A-band) |
| 2527 | ctx->staging.ofdm_basic_rates = |
| 2528 | bss_conf->basic_rates; |
| 2529 | else |
| 2530 | ctx->staging.ofdm_basic_rates = |
| 2531 | bss_conf->basic_rates >> 4; |
| 2532 | ctx->staging.cck_basic_rates = |
| 2533 | bss_conf->basic_rates & 0xF; |
| 2534 | */ |
| 2535 | } |
| 2536 | |
| 2537 | if (changes & BSS_CHANGED_HT) { |
| 2538 | iwl_legacy_ht_conf(priv, vif); |
| 2539 | |
| 2540 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
| 2541 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| 2542 | } |
| 2543 | |
| 2544 | if (changes & BSS_CHANGED_ASSOC) { |
| 2545 | IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); |
| 2546 | if (bss_conf->assoc) { |
| 2547 | priv->timestamp = bss_conf->timestamp; |
| 2548 | |
| 2549 | if (!iwl_legacy_is_rfkill(priv)) |
| 2550 | priv->cfg->ops->legacy->post_associate(priv); |
| 2551 | } else |
| 2552 | iwl_legacy_set_no_assoc(priv, vif); |
| 2553 | } |
| 2554 | |
| 2555 | if (changes && iwl_legacy_is_associated_ctx(ctx) && bss_conf->aid) { |
| 2556 | IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", |
| 2557 | changes); |
| 2558 | ret = iwl_legacy_send_rxon_assoc(priv, ctx); |
| 2559 | if (!ret) { |
| 2560 | /* Sync active_rxon with latest change. */ |
| 2561 | memcpy((void *)&ctx->active, |
| 2562 | &ctx->staging, |
| 2563 | sizeof(struct iwl_legacy_rxon_cmd)); |
| 2564 | } |
| 2565 | } |
| 2566 | |
| 2567 | if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| 2568 | if (vif->bss_conf.enable_beacon) { |
| 2569 | memcpy(ctx->staging.bssid_addr, |
| 2570 | bss_conf->bssid, ETH_ALEN); |
| 2571 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); |
| 2572 | priv->cfg->ops->legacy->config_ap(priv); |
| 2573 | } else |
| 2574 | iwl_legacy_set_no_assoc(priv, vif); |
| 2575 | } |
| 2576 | |
| 2577 | if (changes & BSS_CHANGED_IBSS) { |
| 2578 | ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif, |
| 2579 | bss_conf->ibss_joined); |
| 2580 | if (ret) |
| 2581 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", |
| 2582 | bss_conf->ibss_joined ? "add" : "remove", |
| 2583 | bss_conf->bssid); |
| 2584 | } |
| 2585 | |
| 2586 | mutex_unlock(&priv->mutex); |
| 2587 | |
| 2588 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 2589 | } |
| 2590 | EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed); |
| 2591 | |
| 2592 | irqreturn_t iwl_legacy_isr(int irq, void *data) |
| 2593 | { |
| 2594 | struct iwl_priv *priv = data; |
| 2595 | u32 inta, inta_mask; |
| 2596 | u32 inta_fh; |
| 2597 | unsigned long flags; |
| 2598 | if (!priv) |
| 2599 | return IRQ_NONE; |
| 2600 | |
| 2601 | spin_lock_irqsave(&priv->lock, flags); |
| 2602 | |
| 2603 | /* Disable (but don't clear!) interrupts here to avoid |
| 2604 | * back-to-back ISRs and sporadic interrupts from our NIC. |
| 2605 | * If we have something to service, the tasklet will re-enable ints. |
| 2606 | * If we *don't* have something, we'll re-enable before leaving here. */ |
| 2607 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ |
| 2608 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); |
| 2609 | |
| 2610 | /* Discover which interrupts are active/pending */ |
| 2611 | inta = iwl_read32(priv, CSR_INT); |
| 2612 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| 2613 | |
| 2614 | /* Ignore interrupt if there's nothing in NIC to service. |
| 2615 | * This may be due to IRQ shared with another device, |
| 2616 | * or due to sporadic interrupts thrown from our NIC. */ |
| 2617 | if (!inta && !inta_fh) { |
| 2618 | IWL_DEBUG_ISR(priv, |
| 2619 | "Ignore interrupt, inta == 0, inta_fh == 0\n"); |
| 2620 | goto none; |
| 2621 | } |
| 2622 | |
| 2623 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { |
| 2624 | /* Hardware disappeared. It might have already raised |
| 2625 | * an interrupt */ |
| 2626 | IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); |
| 2627 | goto unplugged; |
| 2628 | } |
| 2629 | |
| 2630 | IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
| 2631 | inta, inta_mask, inta_fh); |
| 2632 | |
| 2633 | inta &= ~CSR_INT_BIT_SCD; |
| 2634 | |
| 2635 | /* iwl_irq_tasklet() will service interrupts and re-enable them */ |
| 2636 | if (likely(inta || inta_fh)) |
| 2637 | tasklet_schedule(&priv->irq_tasklet); |
| 2638 | |
| 2639 | unplugged: |
| 2640 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2641 | return IRQ_HANDLED; |
| 2642 | |
| 2643 | none: |
| 2644 | /* re-enable interrupts here since we don't have anything to service. */ |
| 2645 | /* only Re-enable if diabled by irq */ |
| 2646 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) |
| 2647 | iwl_legacy_enable_interrupts(priv); |
| 2648 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2649 | return IRQ_NONE; |
| 2650 | } |
| 2651 | EXPORT_SYMBOL(iwl_legacy_isr); |
| 2652 | |
| 2653 | /* |
| 2654 | * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
| 2655 | * function. |
| 2656 | */ |
| 2657 | void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, |
| 2658 | struct ieee80211_tx_info *info, |
| 2659 | __le16 fc, __le32 *tx_flags) |
| 2660 | { |
| 2661 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
| 2662 | *tx_flags |= TX_CMD_FLG_RTS_MSK; |
| 2663 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; |
| 2664 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| 2665 | |
| 2666 | if (!ieee80211_is_mgmt(fc)) |
| 2667 | return; |
| 2668 | |
| 2669 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { |
| 2670 | case cpu_to_le16(IEEE80211_STYPE_AUTH): |
| 2671 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): |
| 2672 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): |
| 2673 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): |
| 2674 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| 2675 | *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| 2676 | break; |
| 2677 | } |
| 2678 | } else if (info->control.rates[0].flags & |
| 2679 | IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| 2680 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| 2681 | *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| 2682 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| 2683 | } |
| 2684 | } |
| 2685 | EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection); |