Commit | Line | Data |
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df48c323 | 1 | /****************************************************************************** |
df48c323 TW |
2 | * |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
1f447808 | 5 | * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. |
df48c323 TW |
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: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
df48c323 TW |
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> | |
8ccde88a | 31 | #include <linux/etherdevice.h> |
d43c36dc | 32 | #include <linux/sched.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1d0a082d | 34 | #include <net/mac80211.h> |
df48c323 | 35 | |
6bc913bd | 36 | #include "iwl-eeprom.h" |
3e0d4cb1 | 37 | #include "iwl-dev.h" /* FIXME: remove */ |
19335774 | 38 | #include "iwl-debug.h" |
df48c323 | 39 | #include "iwl-core.h" |
b661c819 | 40 | #include "iwl-io.h" |
5da4b55f | 41 | #include "iwl-power.h" |
83dde8c9 | 42 | #include "iwl-sta.h" |
ef850d7c | 43 | #include "iwl-helpers.h" |
df48c323 | 44 | |
1d0a082d | 45 | |
06702a73 WYG |
46 | /* |
47 | * set bt_coex_active to true, uCode will do kill/defer | |
48 | * every time the priority line is asserted (BT is sending signals on the | |
49 | * priority line in the PCIx). | |
50 | * set bt_coex_active to false, uCode will ignore the BT activity and | |
51 | * perform the normal operation | |
52 | * | |
53 | * User might experience transmit issue on some platform due to WiFi/BT | |
54 | * co-exist problem. The possible behaviors are: | |
55 | * Able to scan and finding all the available AP | |
56 | * Not able to associate with any AP | |
57 | * On those platforms, WiFi communication can be restored by set | |
58 | * "bt_coex_active" module parameter to "false" | |
59 | * | |
60 | * default: bt_coex_active = true (BT_COEX_ENABLE) | |
61 | */ | |
670245ed | 62 | bool bt_coex_active = true; |
06702a73 | 63 | module_param(bt_coex_active, bool, S_IRUGO); |
6c69d121 | 64 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); |
06702a73 | 65 | |
a562a9dd | 66 | u32 iwl_debug_level; |
a562a9dd | 67 | |
57bd1bea | 68 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
57bd1bea TW |
69 | |
70 | ||
1d0a082d | 71 | /* This function both allocates and initializes hw and priv. */ |
dc21b545 | 72 | struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg) |
1d0a082d AK |
73 | { |
74 | struct iwl_priv *priv; | |
1d0a082d AK |
75 | /* mac80211 allocates memory for this device instance, including |
76 | * space for this driver's private structure */ | |
dc21b545 JB |
77 | struct ieee80211_hw *hw; |
78 | ||
79 | hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), | |
80 | cfg->ops->ieee80211_ops); | |
1d0a082d | 81 | if (hw == NULL) { |
c96c31e4 | 82 | pr_err("%s: Can not allocate network device\n", |
a3139c59 | 83 | cfg->name); |
1d0a082d AK |
84 | goto out; |
85 | } | |
86 | ||
87 | priv = hw->priv; | |
88 | priv->hw = hw; | |
89 | ||
90 | out: | |
91 | return hw; | |
92 | } | |
1d0a082d | 93 | |
d9fe60de JB |
94 | #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
95 | #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ | |
c7de35cd | 96 | static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, |
d9fe60de | 97 | struct ieee80211_sta_ht_cap *ht_info, |
c7de35cd RR |
98 | enum ieee80211_band band) |
99 | { | |
39130df3 RR |
100 | u16 max_bit_rate = 0; |
101 | u8 rx_chains_num = priv->hw_params.rx_chains_num; | |
102 | u8 tx_chains_num = priv->hw_params.tx_chains_num; | |
103 | ||
c7de35cd | 104 | ht_info->cap = 0; |
d9fe60de | 105 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
c7de35cd | 106 | |
d9fe60de | 107 | ht_info->ht_supported = true; |
c7de35cd | 108 | |
7cb1b088 WYG |
109 | if (priv->cfg->ht_params && |
110 | priv->cfg->ht_params->ht_greenfield_support) | |
b261793d | 111 | ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; |
d9fe60de | 112 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
39130df3 | 113 | max_bit_rate = MAX_BIT_RATE_20_MHZ; |
7aafef1c | 114 | if (priv->hw_params.ht40_channel & BIT(band)) { |
d9fe60de JB |
115 | ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
116 | ht_info->cap |= IEEE80211_HT_CAP_SGI_40; | |
117 | ht_info->mcs.rx_mask[4] = 0x01; | |
39130df3 | 118 | max_bit_rate = MAX_BIT_RATE_40_MHZ; |
c7de35cd | 119 | } |
c7de35cd RR |
120 | |
121 | if (priv->cfg->mod_params->amsdu_size_8K) | |
d9fe60de | 122 | ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
c7de35cd RR |
123 | |
124 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; | |
7cb1b088 WYG |
125 | if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_factor) |
126 | ht_info->ampdu_factor = priv->cfg->bt_params->ampdu_factor; | |
c7de35cd | 127 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
7cb1b088 WYG |
128 | if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_density) |
129 | ht_info->ampdu_density = priv->cfg->bt_params->ampdu_density; | |
c7de35cd | 130 | |
d9fe60de | 131 | ht_info->mcs.rx_mask[0] = 0xFF; |
39130df3 | 132 | if (rx_chains_num >= 2) |
d9fe60de | 133 | ht_info->mcs.rx_mask[1] = 0xFF; |
39130df3 | 134 | if (rx_chains_num >= 3) |
d9fe60de | 135 | ht_info->mcs.rx_mask[2] = 0xFF; |
39130df3 RR |
136 | |
137 | /* Highest supported Rx data rate */ | |
138 | max_bit_rate *= rx_chains_num; | |
d9fe60de JB |
139 | WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); |
140 | ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); | |
39130df3 RR |
141 | |
142 | /* Tx MCS capabilities */ | |
d9fe60de | 143 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
39130df3 | 144 | if (tx_chains_num != rx_chains_num) { |
d9fe60de JB |
145 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
146 | ht_info->mcs.tx_params |= ((tx_chains_num - 1) << | |
147 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
39130df3 | 148 | } |
c7de35cd | 149 | } |
c7de35cd | 150 | |
c7de35cd RR |
151 | /** |
152 | * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom | |
153 | */ | |
534166de | 154 | int iwlcore_init_geos(struct iwl_priv *priv) |
c7de35cd RR |
155 | { |
156 | struct iwl_channel_info *ch; | |
157 | struct ieee80211_supported_band *sband; | |
158 | struct ieee80211_channel *channels; | |
159 | struct ieee80211_channel *geo_ch; | |
160 | struct ieee80211_rate *rates; | |
161 | int i = 0; | |
162 | ||
163 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || | |
164 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
e1623446 | 165 | IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); |
c7de35cd RR |
166 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
167 | return 0; | |
168 | } | |
169 | ||
170 | channels = kzalloc(sizeof(struct ieee80211_channel) * | |
171 | priv->channel_count, GFP_KERNEL); | |
172 | if (!channels) | |
173 | return -ENOMEM; | |
174 | ||
5027309b | 175 | rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), |
c7de35cd RR |
176 | GFP_KERNEL); |
177 | if (!rates) { | |
178 | kfree(channels); | |
179 | return -ENOMEM; | |
180 | } | |
181 | ||
182 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
183 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
184 | sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; | |
185 | /* just OFDM */ | |
186 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; | |
5027309b | 187 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; |
c7de35cd | 188 | |
49779293 | 189 | if (priv->cfg->sku & IWL_SKU_N) |
d9fe60de | 190 | iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
49779293 | 191 | IEEE80211_BAND_5GHZ); |
c7de35cd RR |
192 | |
193 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
194 | sband->channels = channels; | |
195 | /* OFDM & CCK */ | |
196 | sband->bitrates = rates; | |
5027309b | 197 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY; |
c7de35cd | 198 | |
49779293 | 199 | if (priv->cfg->sku & IWL_SKU_N) |
d9fe60de | 200 | iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
49779293 | 201 | IEEE80211_BAND_2GHZ); |
c7de35cd RR |
202 | |
203 | priv->ieee_channels = channels; | |
204 | priv->ieee_rates = rates; | |
205 | ||
c7de35cd RR |
206 | for (i = 0; i < priv->channel_count; i++) { |
207 | ch = &priv->channel_info[i]; | |
208 | ||
209 | /* FIXME: might be removed if scan is OK */ | |
210 | if (!is_channel_valid(ch)) | |
211 | continue; | |
212 | ||
5a3a0352 | 213 | sband = &priv->bands[ch->band]; |
c7de35cd RR |
214 | |
215 | geo_ch = &sband->channels[sband->n_channels++]; | |
216 | ||
217 | geo_ch->center_freq = | |
5a3a0352 | 218 | ieee80211_channel_to_frequency(ch->channel, ch->band); |
c7de35cd RR |
219 | geo_ch->max_power = ch->max_power_avg; |
220 | geo_ch->max_antenna_gain = 0xff; | |
221 | geo_ch->hw_value = ch->channel; | |
222 | ||
223 | if (is_channel_valid(ch)) { | |
224 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) | |
225 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; | |
226 | ||
227 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
228 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
229 | ||
230 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
231 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
232 | ||
7aafef1c | 233 | geo_ch->flags |= ch->ht40_extension_channel; |
4d38c2e8 | 234 | |
dc1b0973 WYG |
235 | if (ch->max_power_avg > priv->tx_power_device_lmt) |
236 | priv->tx_power_device_lmt = ch->max_power_avg; | |
c7de35cd RR |
237 | } else { |
238 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
239 | } | |
240 | ||
e1623446 | 241 | IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", |
c7de35cd RR |
242 | ch->channel, geo_ch->center_freq, |
243 | is_channel_a_band(ch) ? "5.2" : "2.4", | |
244 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? | |
245 | "restricted" : "valid", | |
246 | geo_ch->flags); | |
247 | } | |
248 | ||
249 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && | |
250 | priv->cfg->sku & IWL_SKU_A) { | |
978785a3 TW |
251 | IWL_INFO(priv, "Incorrectly detected BG card as ABG. " |
252 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
a3139c59 SO |
253 | priv->pci_dev->device, |
254 | priv->pci_dev->subsystem_device); | |
c7de35cd RR |
255 | priv->cfg->sku &= ~IWL_SKU_A; |
256 | } | |
257 | ||
978785a3 | 258 | IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
a3139c59 SO |
259 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, |
260 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); | |
c7de35cd RR |
261 | |
262 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | /* | |
268 | * iwlcore_free_geos - undo allocations in iwlcore_init_geos | |
269 | */ | |
534166de | 270 | void iwlcore_free_geos(struct iwl_priv *priv) |
c7de35cd RR |
271 | { |
272 | kfree(priv->ieee_channels); | |
273 | kfree(priv->ieee_rates); | |
274 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
275 | } | |
c7de35cd | 276 | |
7e6a5886 JB |
277 | static bool iwl_is_channel_extension(struct iwl_priv *priv, |
278 | enum ieee80211_band band, | |
279 | u16 channel, u8 extension_chan_offset) | |
47c5196e TW |
280 | { |
281 | const struct iwl_channel_info *ch_info; | |
282 | ||
283 | ch_info = iwl_get_channel_info(priv, band, channel); | |
284 | if (!is_channel_valid(ch_info)) | |
7e6a5886 | 285 | return false; |
47c5196e | 286 | |
d9fe60de | 287 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) |
7aafef1c | 288 | return !(ch_info->ht40_extension_channel & |
689da1b3 | 289 | IEEE80211_CHAN_NO_HT40PLUS); |
d9fe60de | 290 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
7aafef1c | 291 | return !(ch_info->ht40_extension_channel & |
689da1b3 | 292 | IEEE80211_CHAN_NO_HT40MINUS); |
47c5196e | 293 | |
7e6a5886 | 294 | return false; |
47c5196e TW |
295 | } |
296 | ||
7e6a5886 JB |
297 | bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
298 | struct iwl_rxon_context *ctx, | |
299 | struct ieee80211_sta_ht_cap *ht_cap) | |
47c5196e | 300 | { |
7e6a5886 JB |
301 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) |
302 | return false; | |
47c5196e | 303 | |
7e6a5886 JB |
304 | /* |
305 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
a2b0f02e WYG |
306 | * the bit will not set if it is pure 40MHz case |
307 | */ | |
7e6a5886 JB |
308 | if (ht_cap && !ht_cap->ht_supported) |
309 | return false; | |
310 | ||
d73e4923 | 311 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1e4247d4 | 312 | if (priv->disable_ht40) |
7e6a5886 | 313 | return false; |
1e4247d4 | 314 | #endif |
7e6a5886 | 315 | |
611d3eb7 | 316 | return iwl_is_channel_extension(priv, priv->band, |
246ed355 | 317 | le16_to_cpu(ctx->staging.channel), |
7e6a5886 | 318 | ctx->ht.extension_chan_offset); |
47c5196e | 319 | } |
47c5196e | 320 | |
2c2f3b33 TW |
321 | static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) |
322 | { | |
ea196fdb JB |
323 | u16 new_val; |
324 | u16 beacon_factor; | |
325 | ||
326 | /* | |
327 | * If mac80211 hasn't given us a beacon interval, program | |
328 | * the default into the device (not checking this here | |
329 | * would cause the adjustment below to return the maximum | |
330 | * value, which may break PAN.) | |
331 | */ | |
332 | if (!beacon_val) | |
333 | return DEFAULT_BEACON_INTERVAL; | |
334 | ||
335 | /* | |
336 | * If the beacon interval we obtained from the peer | |
337 | * is too large, we'll have to wake up more often | |
338 | * (and in IBSS case, we'll beacon too much) | |
339 | * | |
340 | * For example, if max_beacon_val is 4096, and the | |
341 | * requested beacon interval is 7000, we'll have to | |
342 | * use 3500 to be able to wake up on the beacons. | |
343 | * | |
344 | * This could badly influence beacon detection stats. | |
345 | */ | |
2c2f3b33 TW |
346 | |
347 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
348 | new_val = beacon_val / beacon_factor; | |
349 | ||
350 | if (!new_val) | |
351 | new_val = max_beacon_val; | |
352 | ||
353 | return new_val; | |
354 | } | |
355 | ||
47313e34 | 356 | int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
2c2f3b33 TW |
357 | { |
358 | u64 tsf; | |
359 | s32 interval_tm, rem; | |
2c2f3b33 TW |
360 | struct ieee80211_conf *conf = NULL; |
361 | u16 beacon_int; | |
47313e34 | 362 | struct ieee80211_vif *vif = ctx->vif; |
2c2f3b33 TW |
363 | |
364 | conf = ieee80211_get_hw_conf(priv->hw); | |
365 | ||
948f5a2f JB |
366 | lockdep_assert_held(&priv->mutex); |
367 | ||
246ed355 | 368 | memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
948f5a2f | 369 | |
246ed355 JB |
370 | ctx->timing.timestamp = cpu_to_le64(priv->timestamp); |
371 | ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
2c2f3b33 | 372 | |
47313e34 | 373 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; |
2c2f3b33 | 374 | |
47313e34 JB |
375 | /* |
376 | * TODO: For IBSS we need to get atim_window from mac80211, | |
377 | * for now just always use 0 | |
378 | */ | |
379 | ctx->timing.atim_window = 0; | |
2c2f3b33 | 380 | |
bde4530e | 381 | if (ctx->ctxid == IWL_RXON_CTX_PAN && |
f1f270b2 JB |
382 | (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) && |
383 | iwl_is_associated(priv, IWL_RXON_CTX_BSS) && | |
384 | priv->contexts[IWL_RXON_CTX_BSS].vif && | |
385 | priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) { | |
bde4530e JB |
386 | ctx->timing.beacon_interval = |
387 | priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval; | |
388 | beacon_int = le16_to_cpu(ctx->timing.beacon_interval); | |
f1f270b2 JB |
389 | } else if (ctx->ctxid == IWL_RXON_CTX_BSS && |
390 | iwl_is_associated(priv, IWL_RXON_CTX_PAN) && | |
391 | priv->contexts[IWL_RXON_CTX_PAN].vif && | |
392 | priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int && | |
393 | (!iwl_is_associated_ctx(ctx) || !ctx->vif || | |
394 | !ctx->vif->bss_conf.beacon_int)) { | |
395 | ctx->timing.beacon_interval = | |
396 | priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval; | |
397 | beacon_int = le16_to_cpu(ctx->timing.beacon_interval); | |
bde4530e JB |
398 | } else { |
399 | beacon_int = iwl_adjust_beacon_interval(beacon_int, | |
f8525e55 | 400 | priv->hw_params.max_beacon_itrvl * TIME_UNIT); |
bde4530e JB |
401 | ctx->timing.beacon_interval = cpu_to_le16(beacon_int); |
402 | } | |
2c2f3b33 TW |
403 | |
404 | tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ | |
f8525e55 | 405 | interval_tm = beacon_int * TIME_UNIT; |
2c2f3b33 | 406 | rem = do_div(tsf, interval_tm); |
246ed355 | 407 | ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
2c2f3b33 | 408 | |
47313e34 | 409 | ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; |
2491fa42 | 410 | |
2c2f3b33 TW |
411 | IWL_DEBUG_ASSOC(priv, |
412 | "beacon interval %d beacon timer %d beacon tim %d\n", | |
246ed355 JB |
413 | le16_to_cpu(ctx->timing.beacon_interval), |
414 | le32_to_cpu(ctx->timing.beacon_init_val), | |
415 | le16_to_cpu(ctx->timing.atim_window)); | |
948f5a2f | 416 | |
8f2d3d2a | 417 | return iwl_send_cmd_pdu(priv, ctx->rxon_timing_cmd, |
246ed355 | 418 | sizeof(ctx->timing), &ctx->timing); |
2c2f3b33 | 419 | } |
2c2f3b33 | 420 | |
246ed355 JB |
421 | void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
422 | int hw_decrypt) | |
8ccde88a | 423 | { |
246ed355 | 424 | struct iwl_rxon_cmd *rxon = &ctx->staging; |
8ccde88a SO |
425 | |
426 | if (hw_decrypt) | |
427 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
428 | else | |
429 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
430 | ||
431 | } | |
8ccde88a | 432 | |
dacefedb | 433 | /* validate RXON structure is valid */ |
246ed355 | 434 | int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
8ccde88a | 435 | { |
246ed355 | 436 | struct iwl_rxon_cmd *rxon = &ctx->staging; |
dacefedb | 437 | bool error = false; |
8ccde88a SO |
438 | |
439 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
dacefedb JB |
440 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { |
441 | IWL_WARN(priv, "check 2.4G: wrong narrow\n"); | |
442 | error = true; | |
443 | } | |
444 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { | |
445 | IWL_WARN(priv, "check 2.4G: wrong radar\n"); | |
446 | error = true; | |
447 | } | |
8ccde88a | 448 | } else { |
dacefedb JB |
449 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { |
450 | IWL_WARN(priv, "check 5.2G: not short slot!\n"); | |
451 | error = true; | |
452 | } | |
453 | if (rxon->flags & RXON_FLG_CCK_MSK) { | |
454 | IWL_WARN(priv, "check 5.2G: CCK!\n"); | |
455 | error = true; | |
456 | } | |
457 | } | |
458 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { | |
459 | IWL_WARN(priv, "mac/bssid mcast!\n"); | |
460 | error = true; | |
8ccde88a | 461 | } |
8ccde88a SO |
462 | |
463 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
dacefedb JB |
464 | if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && |
465 | (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { | |
466 | IWL_WARN(priv, "neither 1 nor 6 are basic\n"); | |
467 | error = true; | |
468 | } | |
8ccde88a | 469 | |
dacefedb JB |
470 | if (le16_to_cpu(rxon->assoc_id) > 2007) { |
471 | IWL_WARN(priv, "aid > 2007\n"); | |
472 | error = true; | |
473 | } | |
8ccde88a | 474 | |
dacefedb JB |
475 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) |
476 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { | |
477 | IWL_WARN(priv, "CCK and short slot\n"); | |
478 | error = true; | |
479 | } | |
8ccde88a | 480 | |
dacefedb JB |
481 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) |
482 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { | |
483 | IWL_WARN(priv, "CCK and auto detect"); | |
484 | error = true; | |
485 | } | |
8ccde88a | 486 | |
dacefedb JB |
487 | if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | |
488 | RXON_FLG_TGG_PROTECT_MSK)) == | |
489 | RXON_FLG_TGG_PROTECT_MSK) { | |
490 | IWL_WARN(priv, "TGg but no auto-detect\n"); | |
491 | error = true; | |
492 | } | |
8ccde88a SO |
493 | |
494 | if (error) | |
495 | IWL_WARN(priv, "Tuning to channel %d\n", | |
496 | le16_to_cpu(rxon->channel)); | |
497 | ||
498 | if (error) { | |
dacefedb JB |
499 | IWL_ERR(priv, "Invalid RXON\n"); |
500 | return -EINVAL; | |
8ccde88a SO |
501 | } |
502 | return 0; | |
503 | } | |
8ccde88a SO |
504 | |
505 | /** | |
506 | * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed | |
507 | * @priv: staging_rxon is compared to active_rxon | |
508 | * | |
509 | * If the RXON structure is changing enough to require a new tune, | |
510 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
511 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
512 | */ | |
246ed355 JB |
513 | int iwl_full_rxon_required(struct iwl_priv *priv, |
514 | struct iwl_rxon_context *ctx) | |
8ccde88a | 515 | { |
246ed355 JB |
516 | const struct iwl_rxon_cmd *staging = &ctx->staging; |
517 | const struct iwl_rxon_cmd *active = &ctx->active; | |
518 | ||
519 | #define CHK(cond) \ | |
520 | if ((cond)) { \ | |
521 | IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \ | |
522 | return 1; \ | |
523 | } | |
524 | ||
525 | #define CHK_NEQ(c1, c2) \ | |
526 | if ((c1) != (c2)) { \ | |
527 | IWL_DEBUG_INFO(priv, "need full RXON - " \ | |
528 | #c1 " != " #c2 " - %d != %d\n", \ | |
529 | (c1), (c2)); \ | |
530 | return 1; \ | |
531 | } | |
8ccde88a SO |
532 | |
533 | /* These items are only settable from the full RXON command */ | |
246ed355 JB |
534 | CHK(!iwl_is_associated_ctx(ctx)); |
535 | CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr)); | |
536 | CHK(compare_ether_addr(staging->node_addr, active->node_addr)); | |
537 | CHK(compare_ether_addr(staging->wlap_bssid_addr, | |
538 | active->wlap_bssid_addr)); | |
539 | CHK_NEQ(staging->dev_type, active->dev_type); | |
540 | CHK_NEQ(staging->channel, active->channel); | |
541 | CHK_NEQ(staging->air_propagation, active->air_propagation); | |
542 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, | |
543 | active->ofdm_ht_single_stream_basic_rates); | |
544 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, | |
545 | active->ofdm_ht_dual_stream_basic_rates); | |
546 | CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates, | |
547 | active->ofdm_ht_triple_stream_basic_rates); | |
548 | CHK_NEQ(staging->assoc_id, active->assoc_id); | |
8ccde88a SO |
549 | |
550 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
551 | * be updated with the RXON_ASSOC command -- however only some | |
552 | * flag transitions are allowed using RXON_ASSOC */ | |
553 | ||
554 | /* Check if we are not switching bands */ | |
246ed355 JB |
555 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, |
556 | active->flags & RXON_FLG_BAND_24G_MSK); | |
8ccde88a SO |
557 | |
558 | /* Check if we are switching association toggle */ | |
246ed355 JB |
559 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, |
560 | active->filter_flags & RXON_FILTER_ASSOC_MSK); | |
561 | ||
562 | #undef CHK | |
563 | #undef CHK_NEQ | |
8ccde88a SO |
564 | |
565 | return 0; | |
566 | } | |
8ccde88a | 567 | |
76d04815 JB |
568 | u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv, |
569 | struct iwl_rxon_context *ctx) | |
8ccde88a | 570 | { |
4a02886b JB |
571 | /* |
572 | * Assign the lowest rate -- should really get this from | |
573 | * the beacon skb from mac80211. | |
574 | */ | |
246ed355 | 575 | if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) |
8ccde88a SO |
576 | return IWL_RATE_1M_PLCP; |
577 | else | |
578 | return IWL_RATE_6M_PLCP; | |
579 | } | |
8ccde88a | 580 | |
246ed355 JB |
581 | static void _iwl_set_rxon_ht(struct iwl_priv *priv, |
582 | struct iwl_ht_config *ht_conf, | |
583 | struct iwl_rxon_context *ctx) | |
47c5196e | 584 | { |
246ed355 | 585 | struct iwl_rxon_cmd *rxon = &ctx->staging; |
47c5196e | 586 | |
7e6a5886 | 587 | if (!ctx->ht.enabled) { |
a2b0f02e | 588 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | |
42eb7c64 | 589 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | |
7aafef1c | 590 | RXON_FLG_HT40_PROT_MSK | |
42eb7c64 | 591 | RXON_FLG_HT_PROT_MSK); |
47c5196e | 592 | return; |
42eb7c64 | 593 | } |
47c5196e | 594 | |
7e6a5886 | 595 | /* FIXME: if the definition of ht.protection changed, the "translation" |
a2b0f02e WYG |
596 | * will be needed for rxon->flags |
597 | */ | |
7e6a5886 | 598 | rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); |
a2b0f02e WYG |
599 | |
600 | /* Set up channel bandwidth: | |
7aafef1c | 601 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ |
a2b0f02e WYG |
602 | /* clear the HT channel mode before set the mode */ |
603 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
604 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
7e6a5886 | 605 | if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) { |
7aafef1c | 606 | /* pure ht40 */ |
7e6a5886 | 607 | if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
a2b0f02e | 608 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
508b08e7 | 609 | /* Note: control channel is opposite of extension channel */ |
7e6a5886 | 610 | switch (ctx->ht.extension_chan_offset) { |
508b08e7 WYG |
611 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
612 | rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
613 | break; | |
614 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
615 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
616 | break; | |
617 | } | |
618 | } else { | |
a2b0f02e | 619 | /* Note: control channel is opposite of extension channel */ |
7e6a5886 | 620 | switch (ctx->ht.extension_chan_offset) { |
a2b0f02e WYG |
621 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
622 | rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
623 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
624 | break; | |
625 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
626 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
627 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
628 | break; | |
629 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
630 | default: | |
631 | /* channel location only valid if in Mixed mode */ | |
632 | IWL_ERR(priv, "invalid extension channel offset\n"); | |
633 | break; | |
634 | } | |
635 | } | |
636 | } else { | |
637 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
47c5196e TW |
638 | } |
639 | ||
45823531 | 640 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
246ed355 | 641 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
47c5196e | 642 | |
02bb1bea | 643 | IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " |
ae5eb026 | 644 | "extension channel offset 0x%x\n", |
7e6a5886 JB |
645 | le32_to_cpu(rxon->flags), ctx->ht.protection, |
646 | ctx->ht.extension_chan_offset); | |
47c5196e | 647 | } |
246ed355 JB |
648 | |
649 | void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) | |
650 | { | |
651 | struct iwl_rxon_context *ctx; | |
652 | ||
653 | for_each_context(priv, ctx) | |
654 | _iwl_set_rxon_ht(priv, ht_conf, ctx); | |
655 | } | |
47c5196e | 656 | |
246ed355 | 657 | /* Return valid, unused, channel for a passive scan to reset the RF */ |
14023641 | 658 | u8 iwl_get_single_channel_number(struct iwl_priv *priv, |
246ed355 | 659 | enum ieee80211_band band) |
14023641 AK |
660 | { |
661 | const struct iwl_channel_info *ch_info; | |
662 | int i; | |
663 | u8 channel = 0; | |
246ed355 JB |
664 | u8 min, max; |
665 | struct iwl_rxon_context *ctx; | |
14023641 | 666 | |
14023641 | 667 | if (band == IEEE80211_BAND_5GHZ) { |
246ed355 JB |
668 | min = 14; |
669 | max = priv->channel_count; | |
14023641 | 670 | } else { |
246ed355 JB |
671 | min = 0; |
672 | max = 14; | |
673 | } | |
674 | ||
675 | for (i = min; i < max; i++) { | |
676 | bool busy = false; | |
677 | ||
678 | for_each_context(priv, ctx) { | |
679 | busy = priv->channel_info[i].channel == | |
680 | le16_to_cpu(ctx->staging.channel); | |
681 | if (busy) | |
682 | break; | |
14023641 | 683 | } |
246ed355 JB |
684 | |
685 | if (busy) | |
686 | continue; | |
687 | ||
688 | channel = priv->channel_info[i].channel; | |
689 | ch_info = iwl_get_channel_info(priv, band, channel); | |
690 | if (is_channel_valid(ch_info)) | |
691 | break; | |
14023641 AK |
692 | } |
693 | ||
694 | return channel; | |
695 | } | |
14023641 | 696 | |
bf85ea4f | 697 | /** |
3edb5fd6 SZ |
698 | * iwl_set_rxon_channel - Set the band and channel values in staging RXON |
699 | * @ch: requested channel as a pointer to struct ieee80211_channel | |
bf85ea4f | 700 | |
bf85ea4f | 701 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields |
3edb5fd6 | 702 | * in the staging RXON flag structure based on the ch->band |
bf85ea4f | 703 | */ |
246ed355 JB |
704 | int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, |
705 | struct iwl_rxon_context *ctx) | |
bf85ea4f | 706 | { |
17e72782 | 707 | enum ieee80211_band band = ch->band; |
81e95430 | 708 | u16 channel = ch->hw_value; |
17e72782 | 709 | |
246ed355 | 710 | if ((le16_to_cpu(ctx->staging.channel) == channel) && |
bf85ea4f AK |
711 | (priv->band == band)) |
712 | return 0; | |
713 | ||
246ed355 | 714 | ctx->staging.channel = cpu_to_le16(channel); |
bf85ea4f | 715 | if (band == IEEE80211_BAND_5GHZ) |
246ed355 | 716 | ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK; |
bf85ea4f | 717 | else |
246ed355 | 718 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; |
bf85ea4f AK |
719 | |
720 | priv->band = band; | |
721 | ||
e1623446 | 722 | IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); |
bf85ea4f AK |
723 | |
724 | return 0; | |
725 | } | |
bf85ea4f | 726 | |
79d07325 | 727 | void iwl_set_flags_for_band(struct iwl_priv *priv, |
246ed355 | 728 | struct iwl_rxon_context *ctx, |
79d07325 WYG |
729 | enum ieee80211_band band, |
730 | struct ieee80211_vif *vif) | |
8ccde88a SO |
731 | { |
732 | if (band == IEEE80211_BAND_5GHZ) { | |
246ed355 | 733 | ctx->staging.flags &= |
8ccde88a SO |
734 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
735 | | RXON_FLG_CCK_MSK); | |
246ed355 | 736 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
8ccde88a SO |
737 | } else { |
738 | /* Copied from iwl_post_associate() */ | |
c213d745 | 739 | if (vif && vif->bss_conf.use_short_slot) |
246ed355 | 740 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
8ccde88a | 741 | else |
246ed355 | 742 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
8ccde88a | 743 | |
246ed355 JB |
744 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; |
745 | ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
746 | ctx->staging.flags &= ~RXON_FLG_CCK_MSK; | |
8ccde88a SO |
747 | } |
748 | } | |
8ccde88a SO |
749 | |
750 | /* | |
751 | * initialize rxon structure with default values from eeprom | |
752 | */ | |
1dda6d28 | 753 | void iwl_connection_init_rx_config(struct iwl_priv *priv, |
d0fe478c | 754 | struct iwl_rxon_context *ctx) |
8ccde88a SO |
755 | { |
756 | const struct iwl_channel_info *ch_info; | |
757 | ||
246ed355 | 758 | memset(&ctx->staging, 0, sizeof(ctx->staging)); |
8ccde88a | 759 | |
d0fe478c JB |
760 | if (!ctx->vif) { |
761 | ctx->staging.dev_type = ctx->unused_devtype; | |
762 | } else switch (ctx->vif->type) { | |
8ccde88a | 763 | case NL80211_IFTYPE_AP: |
d0fe478c | 764 | ctx->staging.dev_type = ctx->ap_devtype; |
8ccde88a SO |
765 | break; |
766 | ||
767 | case NL80211_IFTYPE_STATION: | |
d0fe478c | 768 | ctx->staging.dev_type = ctx->station_devtype; |
246ed355 | 769 | ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; |
8ccde88a SO |
770 | break; |
771 | ||
772 | case NL80211_IFTYPE_ADHOC: | |
d0fe478c | 773 | ctx->staging.dev_type = ctx->ibss_devtype; |
246ed355 JB |
774 | ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; |
775 | ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
8ccde88a SO |
776 | RXON_FILTER_ACCEPT_GRP_MSK; |
777 | break; | |
778 | ||
8ccde88a | 779 | default: |
d0fe478c JB |
780 | IWL_ERR(priv, "Unsupported interface type %d\n", |
781 | ctx->vif->type); | |
8ccde88a SO |
782 | break; |
783 | } | |
784 | ||
785 | #if 0 | |
786 | /* TODO: Figure out when short_preamble would be set and cache from | |
787 | * that */ | |
788 | if (!hw_to_local(priv->hw)->short_preamble) | |
246ed355 | 789 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
8ccde88a | 790 | else |
246ed355 | 791 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
8ccde88a SO |
792 | #endif |
793 | ||
794 | ch_info = iwl_get_channel_info(priv, priv->band, | |
246ed355 | 795 | le16_to_cpu(ctx->active.channel)); |
8ccde88a SO |
796 | |
797 | if (!ch_info) | |
798 | ch_info = &priv->channel_info[0]; | |
799 | ||
246ed355 | 800 | ctx->staging.channel = cpu_to_le16(ch_info->channel); |
8ccde88a SO |
801 | priv->band = ch_info->band; |
802 | ||
d0fe478c | 803 | iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif); |
8ccde88a | 804 | |
246ed355 | 805 | ctx->staging.ofdm_basic_rates = |
8ccde88a | 806 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
246ed355 | 807 | ctx->staging.cck_basic_rates = |
8ccde88a SO |
808 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
809 | ||
a2b0f02e | 810 | /* clear both MIX and PURE40 mode flag */ |
246ed355 | 811 | ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | |
a2b0f02e | 812 | RXON_FLG_CHANNEL_MODE_PURE_40); |
d0fe478c JB |
813 | if (ctx->vif) |
814 | memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); | |
7684c408 | 815 | |
246ed355 JB |
816 | ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; |
817 | ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; | |
818 | ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff; | |
8ccde88a | 819 | } |
8ccde88a | 820 | |
79d07325 | 821 | void iwl_set_rate(struct iwl_priv *priv) |
8ccde88a SO |
822 | { |
823 | const struct ieee80211_supported_band *hw = NULL; | |
824 | struct ieee80211_rate *rate; | |
246ed355 | 825 | struct iwl_rxon_context *ctx; |
8ccde88a SO |
826 | int i; |
827 | ||
828 | hw = iwl_get_hw_mode(priv, priv->band); | |
829 | if (!hw) { | |
830 | IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); | |
831 | return; | |
832 | } | |
833 | ||
834 | priv->active_rate = 0; | |
8ccde88a SO |
835 | |
836 | for (i = 0; i < hw->n_bitrates; i++) { | |
837 | rate = &(hw->bitrates[i]); | |
5027309b | 838 | if (rate->hw_value < IWL_RATE_COUNT_LEGACY) |
8ccde88a SO |
839 | priv->active_rate |= (1 << rate->hw_value); |
840 | } | |
841 | ||
4a02886b | 842 | IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); |
8ccde88a | 843 | |
246ed355 JB |
844 | for_each_context(priv, ctx) { |
845 | ctx->staging.cck_basic_rates = | |
846 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
4a02886b | 847 | |
246ed355 JB |
848 | ctx->staging.ofdm_basic_rates = |
849 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
850 | } | |
8ccde88a | 851 | } |
79d07325 WYG |
852 | |
853 | void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) | |
854 | { | |
8bd413e6 JB |
855 | /* |
856 | * MULTI-FIXME | |
857 | * See iwl_mac_channel_switch. | |
858 | */ | |
859 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
860 | ||
79d07325 WYG |
861 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
862 | return; | |
863 | ||
864 | if (priv->switch_rxon.switch_in_progress) { | |
8bd413e6 | 865 | ieee80211_chswitch_done(ctx->vif, is_success); |
79d07325 WYG |
866 | mutex_lock(&priv->mutex); |
867 | priv->switch_rxon.switch_in_progress = false; | |
868 | mutex_unlock(&priv->mutex); | |
869 | } | |
870 | } | |
8ccde88a | 871 | |
8ccde88a | 872 | #ifdef CONFIG_IWLWIFI_DEBUG |
246ed355 JB |
873 | void iwl_print_rx_config_cmd(struct iwl_priv *priv, |
874 | struct iwl_rxon_context *ctx) | |
8ccde88a | 875 | { |
246ed355 | 876 | struct iwl_rxon_cmd *rxon = &ctx->staging; |
8ccde88a | 877 | |
e1623446 | 878 | IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); |
3d816c77 | 879 | iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
e1623446 TW |
880 | IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
881 | IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
882 | IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", | |
8ccde88a | 883 | le32_to_cpu(rxon->filter_flags)); |
e1623446 TW |
884 | IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); |
885 | IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", | |
8ccde88a | 886 | rxon->ofdm_basic_rates); |
e1623446 TW |
887 | IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); |
888 | IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); | |
889 | IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
890 | IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); | |
8ccde88a | 891 | } |
6686d17e | 892 | #endif |
8ccde88a SO |
893 | /** |
894 | * iwl_irq_handle_error - called for HW or SW error interrupt from card | |
895 | */ | |
896 | void iwl_irq_handle_error(struct iwl_priv *priv) | |
897 | { | |
491bc292 WYG |
898 | unsigned int reload_msec; |
899 | unsigned long reload_jiffies; | |
900 | ||
8ccde88a SO |
901 | /* Set the FW error flag -- cleared on iwl_down */ |
902 | set_bit(STATUS_FW_ERROR, &priv->status); | |
903 | ||
904 | /* Cancel currently queued command. */ | |
905 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
906 | ||
50619ac9 WYG |
907 | /* W/A for WiFi/WiMAX coex and WiMAX own the RF */ |
908 | if (priv->cfg->internal_wimax_coex && | |
909 | (!(iwl_read_prph(priv, APMG_CLK_CTRL_REG) & | |
910 | APMS_CLK_VAL_MRB_FUNC_MODE) || | |
911 | (iwl_read_prph(priv, APMG_PS_CTRL_REG) & | |
912 | APMG_PS_CTRL_VAL_RESET_REQ))) { | |
913 | wake_up_interruptible(&priv->wait_command_queue); | |
914 | /* | |
915 | *Keep the restart process from trying to send host | |
916 | * commands by clearing the INIT status bit | |
917 | */ | |
918 | clear_bit(STATUS_READY, &priv->status); | |
919 | IWL_ERR(priv, "RF is used by WiMAX\n"); | |
920 | return; | |
921 | } | |
922 | ||
459bc732 SZ |
923 | IWL_ERR(priv, "Loaded firmware version: %s\n", |
924 | priv->hw->wiphy->fw_version); | |
925 | ||
3a3ff72c | 926 | priv->cfg->ops->lib->dump_nic_error_log(priv); |
696bdee3 WYG |
927 | if (priv->cfg->ops->lib->dump_csr) |
928 | priv->cfg->ops->lib->dump_csr(priv); | |
1b3eb823 WYG |
929 | if (priv->cfg->ops->lib->dump_fh) |
930 | priv->cfg->ops->lib->dump_fh(priv, NULL, false); | |
b03d7d0f | 931 | priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); |
8ccde88a | 932 | #ifdef CONFIG_IWLWIFI_DEBUG |
c341ddb2 | 933 | if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) |
246ed355 JB |
934 | iwl_print_rx_config_cmd(priv, |
935 | &priv->contexts[IWL_RXON_CTX_BSS]); | |
8ccde88a SO |
936 | #endif |
937 | ||
938 | wake_up_interruptible(&priv->wait_command_queue); | |
939 | ||
940 | /* Keep the restart process from trying to send host | |
941 | * commands by clearing the INIT status bit */ | |
942 | clear_bit(STATUS_READY, &priv->status); | |
943 | ||
491bc292 WYG |
944 | /* |
945 | * If firmware keep reloading, then it indicate something | |
946 | * serious wrong and firmware having problem to recover | |
947 | * from it. Instead of keep trying which will fill the syslog | |
948 | * and hang the system, let's just stop it | |
949 | */ | |
950 | reload_jiffies = jiffies; | |
951 | reload_msec = jiffies_to_msecs((long) reload_jiffies - | |
952 | (long) priv->reload_jiffies); | |
953 | priv->reload_jiffies = reload_jiffies; | |
954 | if (reload_msec <= IWL_MIN_RELOAD_DURATION) { | |
955 | priv->reload_count++; | |
956 | if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { | |
957 | IWL_ERR(priv, "BUG_ON, Stop restarting\n"); | |
958 | return; | |
959 | } | |
960 | } else | |
961 | priv->reload_count = 0; | |
962 | ||
8ccde88a | 963 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
e1623446 | 964 | IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
8ccde88a SO |
965 | "Restarting adapter due to uCode error.\n"); |
966 | ||
8ccde88a SO |
967 | if (priv->cfg->mod_params->restart_fw) |
968 | queue_work(priv->workqueue, &priv->restart); | |
969 | } | |
970 | } | |
8ccde88a | 971 | |
f8e200de | 972 | static int iwl_apm_stop_master(struct iwl_priv *priv) |
d68b603c | 973 | { |
5220af0c | 974 | int ret = 0; |
d68b603c | 975 | |
5220af0c | 976 | /* stop device's busmaster DMA activity */ |
d68b603c AK |
977 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
978 | ||
5220af0c | 979 | ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, |
d68b603c | 980 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); |
5220af0c BC |
981 | if (ret) |
982 | IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); | |
d68b603c | 983 | |
d68b603c AK |
984 | IWL_DEBUG_INFO(priv, "stop master\n"); |
985 | ||
5220af0c | 986 | return ret; |
d68b603c | 987 | } |
d68b603c AK |
988 | |
989 | void iwl_apm_stop(struct iwl_priv *priv) | |
990 | { | |
fadb3582 BC |
991 | IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); |
992 | ||
5220af0c | 993 | /* Stop device's DMA activity */ |
d68b603c AK |
994 | iwl_apm_stop_master(priv); |
995 | ||
5220af0c | 996 | /* Reset the entire device */ |
d68b603c AK |
997 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
998 | ||
999 | udelay(10); | |
5220af0c BC |
1000 | |
1001 | /* | |
1002 | * Clear "initialization complete" bit to move adapter from | |
1003 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
1004 | */ | |
d68b603c | 1005 | iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
d68b603c | 1006 | } |
d68b603c | 1007 | |
fadb3582 BC |
1008 | |
1009 | /* | |
1010 | * Start up NIC's basic functionality after it has been reset | |
1011 | * (e.g. after platform boot, or shutdown via iwl_apm_stop()) | |
1012 | * NOTE: This does not load uCode nor start the embedded processor | |
1013 | */ | |
1014 | int iwl_apm_init(struct iwl_priv *priv) | |
1015 | { | |
1016 | int ret = 0; | |
1017 | u16 lctl; | |
1018 | ||
1019 | IWL_DEBUG_INFO(priv, "Init card's basic functions\n"); | |
1020 | ||
1021 | /* | |
1022 | * Use "set_bit" below rather than "write", to preserve any hardware | |
1023 | * bits already set by default after reset. | |
1024 | */ | |
1025 | ||
1026 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
1027 | iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1028 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
1029 | ||
1030 | /* | |
1031 | * Disable L0s without affecting L1; | |
1032 | * don't wait for ICH L0s (ICH bug W/A) | |
1033 | */ | |
1034 | iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1035 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); | |
1036 | ||
1037 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
1038 | iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); | |
1039 | ||
1040 | /* | |
1041 | * Enable HAP INTA (interrupt from management bus) to | |
1042 | * wake device's PCI Express link L1a -> L0s | |
25985edc | 1043 | * NOTE: This is no-op for 3945 (non-existent bit) |
fadb3582 BC |
1044 | */ |
1045 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, | |
1046 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); | |
1047 | ||
1048 | /* | |
a6c5c731 BC |
1049 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. |
1050 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
1051 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
1052 | * costs negligible amount of power savings. | |
1053 | * If not (unlikely), enable L0S, so there is at least some | |
1054 | * power savings, even without L1. | |
fadb3582 | 1055 | */ |
7cb1b088 | 1056 | if (priv->cfg->base_params->set_l0s) { |
fadb3582 BC |
1057 | lctl = iwl_pcie_link_ctl(priv); |
1058 | if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == | |
1059 | PCI_CFG_LINK_CTRL_VAL_L1_EN) { | |
1060 | /* L1-ASPM enabled; disable(!) L0S */ | |
1061 | iwl_set_bit(priv, CSR_GIO_REG, | |
1062 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1063 | IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); | |
1064 | } else { | |
1065 | /* L1-ASPM disabled; enable(!) L0S */ | |
1066 | iwl_clear_bit(priv, CSR_GIO_REG, | |
1067 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1068 | IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | /* Configure analog phase-lock-loop before activating to D0A */ | |
7cb1b088 WYG |
1073 | if (priv->cfg->base_params->pll_cfg_val) |
1074 | iwl_set_bit(priv, CSR_ANA_PLL_CFG, | |
1075 | priv->cfg->base_params->pll_cfg_val); | |
fadb3582 BC |
1076 | |
1077 | /* | |
1078 | * Set "initialization complete" bit to move adapter from | |
1079 | * D0U* --> D0A* (powered-up active) state. | |
1080 | */ | |
1081 | iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1082 | ||
1083 | /* | |
1084 | * Wait for clock stabilization; once stabilized, access to | |
1085 | * device-internal resources is supported, e.g. iwl_write_prph() | |
1086 | * and accesses to uCode SRAM. | |
1087 | */ | |
1088 | ret = iwl_poll_bit(priv, CSR_GP_CNTRL, | |
1089 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1090 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
1091 | if (ret < 0) { | |
1092 | IWL_DEBUG_INFO(priv, "Failed to init the card\n"); | |
1093 | goto out; | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
1098 | * BSM (Boostrap State Machine) is only in 3945 and 4965; | |
1099 | * later devices (i.e. 5000 and later) have non-volatile SRAM, | |
1100 | * and don't need BSM to restore data after power-saving sleep. | |
1101 | * | |
1102 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
1103 | * do not disable clocks. This preserves any hardware bits already | |
1104 | * set by default in "CLK_CTRL_REG" after reset. | |
1105 | */ | |
7cb1b088 | 1106 | if (priv->cfg->base_params->use_bsm) |
fadb3582 BC |
1107 | iwl_write_prph(priv, APMG_CLK_EN_REG, |
1108 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); | |
1109 | else | |
1110 | iwl_write_prph(priv, APMG_CLK_EN_REG, | |
1111 | APMG_CLK_VAL_DMA_CLK_RQT); | |
1112 | udelay(20); | |
1113 | ||
1114 | /* Disable L1-Active */ | |
1115 | iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, | |
1116 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
1117 | ||
1118 | out: | |
1119 | return ret; | |
1120 | } | |
fadb3582 BC |
1121 | |
1122 | ||
630fe9b6 TW |
1123 | int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) |
1124 | { | |
a25a66ac SG |
1125 | int ret; |
1126 | s8 prev_tx_power; | |
f844a709 SG |
1127 | bool defer; |
1128 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
a25a66ac SG |
1129 | |
1130 | lockdep_assert_held(&priv->mutex); | |
1131 | ||
1132 | if (priv->tx_power_user_lmt == tx_power && !force) | |
1133 | return 0; | |
1134 | ||
1135 | if (!priv->cfg->ops->lib->send_tx_power) | |
1136 | return -EOPNOTSUPP; | |
5eadd94b | 1137 | |
b744cb79 WYG |
1138 | if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) { |
1139 | IWL_WARN(priv, | |
1140 | "Requested user TXPOWER %d below lower limit %d.\n", | |
daf518de | 1141 | tx_power, |
b744cb79 | 1142 | IWLAGN_TX_POWER_TARGET_POWER_MIN); |
630fe9b6 TW |
1143 | return -EINVAL; |
1144 | } | |
1145 | ||
dc1b0973 | 1146 | if (tx_power > priv->tx_power_device_lmt) { |
08f2d58d WYG |
1147 | IWL_WARN(priv, |
1148 | "Requested user TXPOWER %d above upper limit %d.\n", | |
dc1b0973 | 1149 | tx_power, priv->tx_power_device_lmt); |
630fe9b6 TW |
1150 | return -EINVAL; |
1151 | } | |
1152 | ||
a25a66ac SG |
1153 | if (!iwl_is_ready_rf(priv)) |
1154 | return -EIO; | |
630fe9b6 | 1155 | |
f844a709 SG |
1156 | /* scan complete and commit_rxon use tx_power_next value, |
1157 | * it always need to be updated for newest request */ | |
a25a66ac | 1158 | priv->tx_power_next = tx_power; |
f844a709 SG |
1159 | |
1160 | /* do not set tx power when scanning or channel changing */ | |
1161 | defer = test_bit(STATUS_SCANNING, &priv->status) || | |
1162 | memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); | |
1163 | if (defer && !force) { | |
1164 | IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); | |
a25a66ac | 1165 | return 0; |
5eadd94b | 1166 | } |
630fe9b6 | 1167 | |
a25a66ac SG |
1168 | prev_tx_power = priv->tx_power_user_lmt; |
1169 | priv->tx_power_user_lmt = tx_power; | |
1170 | ||
1171 | ret = priv->cfg->ops->lib->send_tx_power(priv); | |
1172 | ||
1173 | /* if fail to set tx_power, restore the orig. tx power */ | |
1174 | if (ret) { | |
1175 | priv->tx_power_user_lmt = prev_tx_power; | |
1176 | priv->tx_power_next = prev_tx_power; | |
1177 | } | |
630fe9b6 TW |
1178 | return ret; |
1179 | } | |
630fe9b6 | 1180 | |
65b52bde | 1181 | void iwl_send_bt_config(struct iwl_priv *priv) |
17f841cd SO |
1182 | { |
1183 | struct iwl_bt_cmd bt_cmd = { | |
456d0f76 WYG |
1184 | .lead_time = BT_LEAD_TIME_DEF, |
1185 | .max_kill = BT_MAX_KILL_DEF, | |
17f841cd SO |
1186 | .kill_ack_mask = 0, |
1187 | .kill_cts_mask = 0, | |
1188 | }; | |
1189 | ||
06702a73 WYG |
1190 | if (!bt_coex_active) |
1191 | bt_cmd.flags = BT_COEX_DISABLE; | |
1192 | else | |
1193 | bt_cmd.flags = BT_COEX_ENABLE; | |
1194 | ||
f21dd005 | 1195 | priv->bt_enable_flag = bt_cmd.flags; |
06702a73 WYG |
1196 | IWL_DEBUG_INFO(priv, "BT coex %s\n", |
1197 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); | |
1198 | ||
65b52bde JB |
1199 | if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
1200 | sizeof(struct iwl_bt_cmd), &bt_cmd)) | |
1201 | IWL_ERR(priv, "failed to send BT Coex Config\n"); | |
17f841cd | 1202 | } |
17f841cd | 1203 | |
ef8d5529 | 1204 | int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) |
49ea8596 | 1205 | { |
ef8d5529 WYG |
1206 | struct iwl_statistics_cmd statistics_cmd = { |
1207 | .configuration_flags = | |
1208 | clear ? IWL_STATS_CONF_CLEAR_STATS : 0, | |
49ea8596 | 1209 | }; |
ef8d5529 WYG |
1210 | |
1211 | if (flags & CMD_ASYNC) | |
1212 | return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, | |
1213 | sizeof(struct iwl_statistics_cmd), | |
1214 | &statistics_cmd, NULL); | |
1215 | else | |
1216 | return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, | |
1217 | sizeof(struct iwl_statistics_cmd), | |
1218 | &statistics_cmd); | |
49ea8596 | 1219 | } |
7e8c519e | 1220 | |
a83b9141 WYG |
1221 | void iwl_clear_isr_stats(struct iwl_priv *priv) |
1222 | { | |
1223 | memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); | |
1224 | } | |
a83b9141 | 1225 | |
488829f1 AK |
1226 | int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
1227 | const struct ieee80211_tx_queue_params *params) | |
1228 | { | |
1229 | struct iwl_priv *priv = hw->priv; | |
8dfdb9d5 | 1230 | struct iwl_rxon_context *ctx; |
488829f1 AK |
1231 | unsigned long flags; |
1232 | int q; | |
1233 | ||
1234 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1235 | ||
1236 | if (!iwl_is_ready_rf(priv)) { | |
1237 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
1238 | return -EIO; | |
1239 | } | |
1240 | ||
1241 | if (queue >= AC_NUM) { | |
1242 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | q = AC_NUM - 1 - queue; | |
1247 | ||
1248 | spin_lock_irqsave(&priv->lock, flags); | |
1249 | ||
8dfdb9d5 JB |
1250 | /* |
1251 | * MULTI-FIXME | |
1252 | * This may need to be done per interface in nl80211/cfg80211/mac80211. | |
1253 | */ | |
1254 | for_each_context(priv, ctx) { | |
1255 | ctx->qos_data.def_qos_parm.ac[q].cw_min = | |
1256 | cpu_to_le16(params->cw_min); | |
1257 | ctx->qos_data.def_qos_parm.ac[q].cw_max = | |
1258 | cpu_to_le16(params->cw_max); | |
1259 | ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
1260 | ctx->qos_data.def_qos_parm.ac[q].edca_txop = | |
1261 | cpu_to_le16((params->txop * 32)); | |
1262 | ||
1263 | ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
1264 | } | |
488829f1 AK |
1265 | |
1266 | spin_unlock_irqrestore(&priv->lock, flags); | |
1267 | ||
1268 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1269 | return 0; | |
1270 | } | |
5bbe233b | 1271 | |
a85d7cca JB |
1272 | int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw) |
1273 | { | |
1274 | struct iwl_priv *priv = hw->priv; | |
1275 | ||
1276 | return priv->ibss_manager == IWL_IBSS_MANAGER; | |
1277 | } | |
a85d7cca | 1278 | |
d4daaea6 | 1279 | static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
727882d6 | 1280 | { |
d0fe478c | 1281 | iwl_connection_init_rx_config(priv, ctx); |
727882d6 AK |
1282 | |
1283 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
246ed355 | 1284 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
727882d6 | 1285 | |
246ed355 | 1286 | return iwlcore_commit_rxon(priv, ctx); |
727882d6 | 1287 | } |
727882d6 | 1288 | |
d4daaea6 JB |
1289 | static int iwl_setup_interface(struct iwl_priv *priv, |
1290 | struct iwl_rxon_context *ctx) | |
1291 | { | |
1292 | struct ieee80211_vif *vif = ctx->vif; | |
1293 | int err; | |
1294 | ||
1295 | lockdep_assert_held(&priv->mutex); | |
1296 | ||
1297 | /* | |
1298 | * This variable will be correct only when there's just | |
1299 | * a single context, but all code using it is for hardware | |
1300 | * that supports only one context. | |
1301 | */ | |
1302 | priv->iw_mode = vif->type; | |
1303 | ||
1304 | ctx->is_active = true; | |
1305 | ||
1306 | err = iwl_set_mode(priv, ctx); | |
1307 | if (err) { | |
1308 | if (!ctx->always_active) | |
1309 | ctx->is_active = false; | |
1310 | return err; | |
1311 | } | |
1312 | ||
1313 | if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist && | |
1314 | vif->type == NL80211_IFTYPE_ADHOC) { | |
1315 | /* | |
1316 | * pretend to have high BT traffic as long as we | |
1317 | * are operating in IBSS mode, as this will cause | |
1318 | * the rate scaling etc. to behave as intended. | |
1319 | */ | |
1320 | priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; | |
1321 | } | |
1322 | ||
1323 | return 0; | |
1324 | } | |
1325 | ||
b55e75ed | 1326 | int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cbb6ab94 AK |
1327 | { |
1328 | struct iwl_priv *priv = hw->priv; | |
246ed355 | 1329 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
d0fe478c | 1330 | struct iwl_rxon_context *tmp, *ctx = NULL; |
d4daaea6 | 1331 | int err; |
f35c0c56 | 1332 | enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif); |
cbb6ab94 | 1333 | |
3779db10 | 1334 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
f35c0c56 | 1335 | viftype, vif->addr); |
cbb6ab94 | 1336 | |
47e28f41 JB |
1337 | mutex_lock(&priv->mutex); |
1338 | ||
4bd530f3 SG |
1339 | if (!iwl_is_ready_rf(priv)) { |
1340 | IWL_WARN(priv, "Try to add interface when device not ready\n"); | |
b55e75ed JB |
1341 | err = -EINVAL; |
1342 | goto out; | |
1343 | } | |
1344 | ||
d0fe478c JB |
1345 | for_each_context(priv, tmp) { |
1346 | u32 possible_modes = | |
1347 | tmp->interface_modes | tmp->exclusive_interface_modes; | |
1348 | ||
1349 | if (tmp->vif) { | |
1350 | /* check if this busy context is exclusive */ | |
1351 | if (tmp->exclusive_interface_modes & | |
1352 | BIT(tmp->vif->type)) { | |
1353 | err = -EINVAL; | |
1354 | goto out; | |
1355 | } | |
1356 | continue; | |
1357 | } | |
1358 | ||
f35c0c56 | 1359 | if (!(possible_modes & BIT(viftype))) |
d0fe478c JB |
1360 | continue; |
1361 | ||
1362 | /* have maybe usable context w/o interface */ | |
1363 | ctx = tmp; | |
1364 | break; | |
1365 | } | |
1366 | ||
1367 | if (!ctx) { | |
47e28f41 JB |
1368 | err = -EOPNOTSUPP; |
1369 | goto out; | |
cbb6ab94 AK |
1370 | } |
1371 | ||
d0fe478c | 1372 | vif_priv->ctx = ctx; |
8bd413e6 | 1373 | ctx->vif = vif; |
59079949 | 1374 | |
d4daaea6 JB |
1375 | err = iwl_setup_interface(priv, ctx); |
1376 | if (!err) | |
1377 | goto out; | |
cbb6ab94 | 1378 | |
8bd413e6 | 1379 | ctx->vif = NULL; |
b55e75ed | 1380 | priv->iw_mode = NL80211_IFTYPE_STATION; |
47e28f41 | 1381 | out: |
cbb6ab94 AK |
1382 | mutex_unlock(&priv->mutex); |
1383 | ||
1384 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
47e28f41 | 1385 | return err; |
cbb6ab94 | 1386 | } |
cbb6ab94 | 1387 | |
d4daaea6 JB |
1388 | static void iwl_teardown_interface(struct iwl_priv *priv, |
1389 | struct ieee80211_vif *vif, | |
1390 | bool mode_change) | |
d8052319 | 1391 | { |
246ed355 | 1392 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
d8052319 | 1393 | |
d4daaea6 | 1394 | lockdep_assert_held(&priv->mutex); |
d0fe478c | 1395 | |
e7e16b90 SG |
1396 | if (priv->scan_vif == vif) { |
1397 | iwl_scan_cancel_timeout(priv, 200); | |
1398 | iwl_force_scan_end(priv); | |
1399 | } | |
8bd413e6 | 1400 | |
d4daaea6 JB |
1401 | if (!mode_change) { |
1402 | iwl_set_mode(priv, ctx); | |
1403 | if (!ctx->always_active) | |
1404 | ctx->is_active = false; | |
1405 | } | |
763cc3bf | 1406 | |
59079949 JB |
1407 | /* |
1408 | * When removing the IBSS interface, overwrite the | |
1409 | * BT traffic load with the stored one from the last | |
1410 | * notification, if any. If this is a device that | |
1411 | * doesn't implement this, this has no effect since | |
1412 | * both values are the same and zero. | |
1413 | */ | |
1414 | if (vif->type == NL80211_IFTYPE_ADHOC) | |
66e863a5 | 1415 | priv->bt_traffic_load = priv->last_bt_traffic_load; |
d4daaea6 JB |
1416 | } |
1417 | ||
1418 | void iwl_mac_remove_interface(struct ieee80211_hw *hw, | |
1419 | struct ieee80211_vif *vif) | |
1420 | { | |
1421 | struct iwl_priv *priv = hw->priv; | |
1422 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
1423 | ||
1424 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1425 | ||
1426 | mutex_lock(&priv->mutex); | |
1427 | ||
1428 | WARN_ON(ctx->vif != vif); | |
1429 | ctx->vif = NULL; | |
1430 | ||
1431 | iwl_teardown_interface(priv, vif, false); | |
59079949 | 1432 | |
8bd413e6 | 1433 | memset(priv->bssid, 0, ETH_ALEN); |
d8052319 AK |
1434 | mutex_unlock(&priv->mutex); |
1435 | ||
1436 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1437 | ||
1438 | } | |
d8052319 | 1439 | |
88804e2b WYG |
1440 | int iwl_alloc_txq_mem(struct iwl_priv *priv) |
1441 | { | |
1442 | if (!priv->txq) | |
1443 | priv->txq = kzalloc( | |
7cb1b088 WYG |
1444 | sizeof(struct iwl_tx_queue) * |
1445 | priv->cfg->base_params->num_of_queues, | |
88804e2b WYG |
1446 | GFP_KERNEL); |
1447 | if (!priv->txq) { | |
91dd6c27 | 1448 | IWL_ERR(priv, "Not enough memory for txq\n"); |
88804e2b WYG |
1449 | return -ENOMEM; |
1450 | } | |
1451 | return 0; | |
1452 | } | |
88804e2b WYG |
1453 | |
1454 | void iwl_free_txq_mem(struct iwl_priv *priv) | |
1455 | { | |
1456 | kfree(priv->txq); | |
1457 | priv->txq = NULL; | |
1458 | } | |
88804e2b | 1459 | |
20594eb0 WYG |
1460 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1461 | ||
1462 | #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) | |
1463 | ||
1464 | void iwl_reset_traffic_log(struct iwl_priv *priv) | |
1465 | { | |
1466 | priv->tx_traffic_idx = 0; | |
1467 | priv->rx_traffic_idx = 0; | |
1468 | if (priv->tx_traffic) | |
1469 | memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1470 | if (priv->rx_traffic) | |
1471 | memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1472 | } | |
1473 | ||
1474 | int iwl_alloc_traffic_mem(struct iwl_priv *priv) | |
1475 | { | |
1476 | u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; | |
1477 | ||
1478 | if (iwl_debug_level & IWL_DL_TX) { | |
1479 | if (!priv->tx_traffic) { | |
1480 | priv->tx_traffic = | |
1481 | kzalloc(traffic_size, GFP_KERNEL); | |
1482 | if (!priv->tx_traffic) | |
1483 | return -ENOMEM; | |
1484 | } | |
1485 | } | |
1486 | if (iwl_debug_level & IWL_DL_RX) { | |
1487 | if (!priv->rx_traffic) { | |
1488 | priv->rx_traffic = | |
1489 | kzalloc(traffic_size, GFP_KERNEL); | |
1490 | if (!priv->rx_traffic) | |
1491 | return -ENOMEM; | |
1492 | } | |
1493 | } | |
1494 | iwl_reset_traffic_log(priv); | |
1495 | return 0; | |
1496 | } | |
20594eb0 WYG |
1497 | |
1498 | void iwl_free_traffic_mem(struct iwl_priv *priv) | |
1499 | { | |
1500 | kfree(priv->tx_traffic); | |
1501 | priv->tx_traffic = NULL; | |
1502 | ||
1503 | kfree(priv->rx_traffic); | |
1504 | priv->rx_traffic = NULL; | |
1505 | } | |
20594eb0 WYG |
1506 | |
1507 | void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv, | |
1508 | u16 length, struct ieee80211_hdr *header) | |
1509 | { | |
1510 | __le16 fc; | |
1511 | u16 len; | |
1512 | ||
1513 | if (likely(!(iwl_debug_level & IWL_DL_TX))) | |
1514 | return; | |
1515 | ||
1516 | if (!priv->tx_traffic) | |
1517 | return; | |
1518 | ||
1519 | fc = header->frame_control; | |
1520 | if (ieee80211_is_data(fc)) { | |
1521 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1522 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1523 | memcpy((priv->tx_traffic + | |
1524 | (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1525 | header, len); | |
1526 | priv->tx_traffic_idx = | |
1527 | (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1528 | } | |
1529 | } | |
20594eb0 WYG |
1530 | |
1531 | void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, | |
1532 | u16 length, struct ieee80211_hdr *header) | |
1533 | { | |
1534 | __le16 fc; | |
1535 | u16 len; | |
1536 | ||
1537 | if (likely(!(iwl_debug_level & IWL_DL_RX))) | |
1538 | return; | |
1539 | ||
1540 | if (!priv->rx_traffic) | |
1541 | return; | |
1542 | ||
1543 | fc = header->frame_control; | |
1544 | if (ieee80211_is_data(fc)) { | |
1545 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1546 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1547 | memcpy((priv->rx_traffic + | |
1548 | (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1549 | header, len); | |
1550 | priv->rx_traffic_idx = | |
1551 | (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1552 | } | |
1553 | } | |
22fdf3c9 WYG |
1554 | |
1555 | const char *get_mgmt_string(int cmd) | |
1556 | { | |
1557 | switch (cmd) { | |
1558 | IWL_CMD(MANAGEMENT_ASSOC_REQ); | |
1559 | IWL_CMD(MANAGEMENT_ASSOC_RESP); | |
1560 | IWL_CMD(MANAGEMENT_REASSOC_REQ); | |
1561 | IWL_CMD(MANAGEMENT_REASSOC_RESP); | |
1562 | IWL_CMD(MANAGEMENT_PROBE_REQ); | |
1563 | IWL_CMD(MANAGEMENT_PROBE_RESP); | |
1564 | IWL_CMD(MANAGEMENT_BEACON); | |
1565 | IWL_CMD(MANAGEMENT_ATIM); | |
1566 | IWL_CMD(MANAGEMENT_DISASSOC); | |
1567 | IWL_CMD(MANAGEMENT_AUTH); | |
1568 | IWL_CMD(MANAGEMENT_DEAUTH); | |
1569 | IWL_CMD(MANAGEMENT_ACTION); | |
1570 | default: | |
1571 | return "UNKNOWN"; | |
1572 | ||
1573 | } | |
1574 | } | |
1575 | ||
1576 | const char *get_ctrl_string(int cmd) | |
1577 | { | |
1578 | switch (cmd) { | |
1579 | IWL_CMD(CONTROL_BACK_REQ); | |
1580 | IWL_CMD(CONTROL_BACK); | |
1581 | IWL_CMD(CONTROL_PSPOLL); | |
1582 | IWL_CMD(CONTROL_RTS); | |
1583 | IWL_CMD(CONTROL_CTS); | |
1584 | IWL_CMD(CONTROL_ACK); | |
1585 | IWL_CMD(CONTROL_CFEND); | |
1586 | IWL_CMD(CONTROL_CFENDACK); | |
1587 | default: | |
1588 | return "UNKNOWN"; | |
1589 | ||
1590 | } | |
1591 | } | |
1592 | ||
7163b8a4 | 1593 | void iwl_clear_traffic_stats(struct iwl_priv *priv) |
22fdf3c9 WYG |
1594 | { |
1595 | memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); | |
22fdf3c9 WYG |
1596 | memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will | |
1601 | * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass. | |
1602 | * Use debugFs to display the rx/rx_statistics | |
1603 | * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL | |
1604 | * information will be recorded, but DATA pkt still will be recorded | |
1605 | * for the reason of iwl_led.c need to control the led blinking based on | |
1606 | * number of tx and rx data. | |
1607 | * | |
1608 | */ | |
1609 | void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) | |
1610 | { | |
1611 | struct traffic_stats *stats; | |
1612 | ||
1613 | if (is_tx) | |
1614 | stats = &priv->tx_stats; | |
1615 | else | |
1616 | stats = &priv->rx_stats; | |
1617 | ||
1618 | if (ieee80211_is_mgmt(fc)) { | |
1619 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1620 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
1621 | stats->mgmt[MANAGEMENT_ASSOC_REQ]++; | |
1622 | break; | |
1623 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): | |
1624 | stats->mgmt[MANAGEMENT_ASSOC_RESP]++; | |
1625 | break; | |
1626 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
1627 | stats->mgmt[MANAGEMENT_REASSOC_REQ]++; | |
1628 | break; | |
1629 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): | |
1630 | stats->mgmt[MANAGEMENT_REASSOC_RESP]++; | |
1631 | break; | |
1632 | case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): | |
1633 | stats->mgmt[MANAGEMENT_PROBE_REQ]++; | |
1634 | break; | |
1635 | case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): | |
1636 | stats->mgmt[MANAGEMENT_PROBE_RESP]++; | |
1637 | break; | |
1638 | case cpu_to_le16(IEEE80211_STYPE_BEACON): | |
1639 | stats->mgmt[MANAGEMENT_BEACON]++; | |
1640 | break; | |
1641 | case cpu_to_le16(IEEE80211_STYPE_ATIM): | |
1642 | stats->mgmt[MANAGEMENT_ATIM]++; | |
1643 | break; | |
1644 | case cpu_to_le16(IEEE80211_STYPE_DISASSOC): | |
1645 | stats->mgmt[MANAGEMENT_DISASSOC]++; | |
1646 | break; | |
1647 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
1648 | stats->mgmt[MANAGEMENT_AUTH]++; | |
1649 | break; | |
1650 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
1651 | stats->mgmt[MANAGEMENT_DEAUTH]++; | |
1652 | break; | |
1653 | case cpu_to_le16(IEEE80211_STYPE_ACTION): | |
1654 | stats->mgmt[MANAGEMENT_ACTION]++; | |
1655 | break; | |
1656 | } | |
1657 | } else if (ieee80211_is_ctl(fc)) { | |
1658 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1659 | case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): | |
1660 | stats->ctrl[CONTROL_BACK_REQ]++; | |
1661 | break; | |
1662 | case cpu_to_le16(IEEE80211_STYPE_BACK): | |
1663 | stats->ctrl[CONTROL_BACK]++; | |
1664 | break; | |
1665 | case cpu_to_le16(IEEE80211_STYPE_PSPOLL): | |
1666 | stats->ctrl[CONTROL_PSPOLL]++; | |
1667 | break; | |
1668 | case cpu_to_le16(IEEE80211_STYPE_RTS): | |
1669 | stats->ctrl[CONTROL_RTS]++; | |
1670 | break; | |
1671 | case cpu_to_le16(IEEE80211_STYPE_CTS): | |
1672 | stats->ctrl[CONTROL_CTS]++; | |
1673 | break; | |
1674 | case cpu_to_le16(IEEE80211_STYPE_ACK): | |
1675 | stats->ctrl[CONTROL_ACK]++; | |
1676 | break; | |
1677 | case cpu_to_le16(IEEE80211_STYPE_CFEND): | |
1678 | stats->ctrl[CONTROL_CFEND]++; | |
1679 | break; | |
1680 | case cpu_to_le16(IEEE80211_STYPE_CFENDACK): | |
1681 | stats->ctrl[CONTROL_CFENDACK]++; | |
1682 | break; | |
1683 | } | |
1684 | } else { | |
1685 | /* data */ | |
1686 | stats->data_cnt++; | |
1687 | stats->data_bytes += len; | |
1688 | } | |
1689 | } | |
20594eb0 WYG |
1690 | #endif |
1691 | ||
a93e7973 | 1692 | static void iwl_force_rf_reset(struct iwl_priv *priv) |
afbdd69a WYG |
1693 | { |
1694 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1695 | return; | |
1696 | ||
246ed355 | 1697 | if (!iwl_is_any_associated(priv)) { |
afbdd69a WYG |
1698 | IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); |
1699 | return; | |
1700 | } | |
1701 | /* | |
1702 | * There is no easy and better way to force reset the radio, | |
1703 | * the only known method is switching channel which will force to | |
1704 | * reset and tune the radio. | |
1705 | * Use internal short scan (single channel) operation to should | |
1706 | * achieve this objective. | |
1707 | * Driver should reset the radio when number of consecutive missed | |
1708 | * beacon, or any other uCode error condition detected. | |
1709 | */ | |
1710 | IWL_DEBUG_INFO(priv, "perform radio reset.\n"); | |
1711 | iwl_internal_short_hw_scan(priv); | |
afbdd69a | 1712 | } |
a93e7973 | 1713 | |
a93e7973 | 1714 | |
c04f9f22 | 1715 | int iwl_force_reset(struct iwl_priv *priv, int mode, bool external) |
a93e7973 | 1716 | { |
8a472da4 WYG |
1717 | struct iwl_force_reset *force_reset; |
1718 | ||
a93e7973 WYG |
1719 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1720 | return -EINVAL; | |
1721 | ||
8a472da4 WYG |
1722 | if (mode >= IWL_MAX_FORCE_RESET) { |
1723 | IWL_DEBUG_INFO(priv, "invalid reset request.\n"); | |
1724 | return -EINVAL; | |
1725 | } | |
1726 | force_reset = &priv->force_reset[mode]; | |
1727 | force_reset->reset_request_count++; | |
c04f9f22 WYG |
1728 | if (!external) { |
1729 | if (force_reset->last_force_reset_jiffies && | |
1730 | time_after(force_reset->last_force_reset_jiffies + | |
1731 | force_reset->reset_duration, jiffies)) { | |
1732 | IWL_DEBUG_INFO(priv, "force reset rejected\n"); | |
1733 | force_reset->reset_reject_count++; | |
1734 | return -EAGAIN; | |
1735 | } | |
a93e7973 | 1736 | } |
8a472da4 WYG |
1737 | force_reset->reset_success_count++; |
1738 | force_reset->last_force_reset_jiffies = jiffies; | |
a93e7973 | 1739 | IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); |
a93e7973 WYG |
1740 | switch (mode) { |
1741 | case IWL_RF_RESET: | |
1742 | iwl_force_rf_reset(priv); | |
1743 | break; | |
1744 | case IWL_FW_RESET: | |
c04f9f22 WYG |
1745 | /* |
1746 | * if the request is from external(ex: debugfs), | |
1747 | * then always perform the request in regardless the module | |
1748 | * parameter setting | |
1749 | * if the request is from internal (uCode error or driver | |
1750 | * detect failure), then fw_restart module parameter | |
1751 | * need to be check before performing firmware reload | |
1752 | */ | |
1753 | if (!external && !priv->cfg->mod_params->restart_fw) { | |
1754 | IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " | |
1755 | "module parameter setting\n"); | |
1756 | break; | |
1757 | } | |
a93e7973 WYG |
1758 | IWL_ERR(priv, "On demand firmware reload\n"); |
1759 | /* Set the FW error flag -- cleared on iwl_down */ | |
1760 | set_bit(STATUS_FW_ERROR, &priv->status); | |
1761 | wake_up_interruptible(&priv->wait_command_queue); | |
1762 | /* | |
1763 | * Keep the restart process from trying to send host | |
1764 | * commands by clearing the INIT status bit | |
1765 | */ | |
1766 | clear_bit(STATUS_READY, &priv->status); | |
1767 | queue_work(priv->workqueue, &priv->restart); | |
1768 | break; | |
a93e7973 | 1769 | } |
a93e7973 WYG |
1770 | return 0; |
1771 | } | |
b74e31a9 | 1772 | |
d4daaea6 JB |
1773 | int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
1774 | enum nl80211_iftype newtype, bool newp2p) | |
1775 | { | |
1776 | struct iwl_priv *priv = hw->priv; | |
1777 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
1778 | struct iwl_rxon_context *tmp; | |
1779 | u32 interface_modes; | |
1780 | int err; | |
1781 | ||
1782 | newtype = ieee80211_iftype_p2p(newtype, newp2p); | |
1783 | ||
1784 | mutex_lock(&priv->mutex); | |
1785 | ||
1786 | interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; | |
1787 | ||
1788 | if (!(interface_modes & BIT(newtype))) { | |
1789 | err = -EBUSY; | |
1790 | goto out; | |
1791 | } | |
1792 | ||
1793 | if (ctx->exclusive_interface_modes & BIT(newtype)) { | |
1794 | for_each_context(priv, tmp) { | |
1795 | if (ctx == tmp) | |
1796 | continue; | |
1797 | ||
1798 | if (!tmp->vif) | |
1799 | continue; | |
1800 | ||
1801 | /* | |
1802 | * The current mode switch would be exclusive, but | |
1803 | * another context is active ... refuse the switch. | |
1804 | */ | |
1805 | err = -EBUSY; | |
1806 | goto out; | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | /* success */ | |
1811 | iwl_teardown_interface(priv, vif, true); | |
1812 | vif->type = newtype; | |
1813 | err = iwl_setup_interface(priv, ctx); | |
1814 | WARN_ON(err); | |
1815 | /* | |
1816 | * We've switched internally, but submitting to the | |
1817 | * device may have failed for some reason. Mask this | |
1818 | * error, because otherwise mac80211 will not switch | |
1819 | * (and set the interface type back) and we'll be | |
1820 | * out of sync with it. | |
1821 | */ | |
1822 | err = 0; | |
1823 | ||
1824 | out: | |
1825 | mutex_unlock(&priv->mutex); | |
1826 | return err; | |
1827 | } | |
d4daaea6 | 1828 | |
b74e31a9 | 1829 | /* |
22de94de SG |
1830 | * On every watchdog tick we check (latest) time stamp. If it does not |
1831 | * change during timeout period and queue is not empty we reset firmware. | |
b74e31a9 | 1832 | */ |
b74e31a9 WYG |
1833 | static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt) |
1834 | { | |
22de94de SG |
1835 | struct iwl_tx_queue *txq = &priv->txq[cnt]; |
1836 | struct iwl_queue *q = &txq->q; | |
1837 | unsigned long timeout; | |
1838 | int ret; | |
b74e31a9 | 1839 | |
22de94de SG |
1840 | if (q->read_ptr == q->write_ptr) { |
1841 | txq->time_stamp = jiffies; | |
7cb1b088 | 1842 | return 0; |
22de94de | 1843 | } |
7cb1b088 | 1844 | |
22de94de SG |
1845 | timeout = txq->time_stamp + |
1846 | msecs_to_jiffies(priv->cfg->base_params->wd_timeout); | |
1847 | ||
1848 | if (time_after(jiffies, timeout)) { | |
1849 | IWL_ERR(priv, "Queue %d stuck for %u ms.\n", | |
1850 | q->id, priv->cfg->base_params->wd_timeout); | |
1851 | ret = iwl_force_reset(priv, IWL_FW_RESET, false); | |
1852 | return (ret == -EAGAIN) ? 0 : 1; | |
b74e31a9 | 1853 | } |
22de94de | 1854 | |
b74e31a9 WYG |
1855 | return 0; |
1856 | } | |
1857 | ||
22de94de SG |
1858 | /* |
1859 | * Making watchdog tick be a quarter of timeout assure we will | |
1860 | * discover the queue hung between timeout and 1.25*timeout | |
1861 | */ | |
1862 | #define IWL_WD_TICK(timeout) ((timeout) / 4) | |
1863 | ||
1864 | /* | |
1865 | * Watchdog timer callback, we check each tx queue for stuck, if if hung | |
1866 | * we reset the firmware. If everything is fine just rearm the timer. | |
1867 | */ | |
1868 | void iwl_bg_watchdog(unsigned long data) | |
b74e31a9 WYG |
1869 | { |
1870 | struct iwl_priv *priv = (struct iwl_priv *)data; | |
1871 | int cnt; | |
22de94de | 1872 | unsigned long timeout; |
b74e31a9 WYG |
1873 | |
1874 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1875 | return; | |
1876 | ||
22de94de SG |
1877 | timeout = priv->cfg->base_params->wd_timeout; |
1878 | if (timeout == 0) | |
1879 | return; | |
1880 | ||
b74e31a9 | 1881 | /* monitor and check for stuck cmd queue */ |
13bb9483 | 1882 | if (iwl_check_stuck_queue(priv, priv->cmd_queue)) |
b74e31a9 WYG |
1883 | return; |
1884 | ||
1885 | /* monitor and check for other stuck queues */ | |
246ed355 | 1886 | if (iwl_is_any_associated(priv)) { |
b74e31a9 WYG |
1887 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { |
1888 | /* skip as we already checked the command queue */ | |
13bb9483 | 1889 | if (cnt == priv->cmd_queue) |
b74e31a9 WYG |
1890 | continue; |
1891 | if (iwl_check_stuck_queue(priv, cnt)) | |
1892 | return; | |
1893 | } | |
1894 | } | |
22de94de SG |
1895 | |
1896 | mod_timer(&priv->watchdog, jiffies + | |
1897 | msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
b74e31a9 | 1898 | } |
22de94de SG |
1899 | |
1900 | void iwl_setup_watchdog(struct iwl_priv *priv) | |
1901 | { | |
1902 | unsigned int timeout = priv->cfg->base_params->wd_timeout; | |
afbdd69a | 1903 | |
22de94de SG |
1904 | if (timeout) |
1905 | mod_timer(&priv->watchdog, | |
1906 | jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
1907 | else | |
1908 | del_timer(&priv->watchdog); | |
1909 | } | |
a0ee74cf WYG |
1910 | |
1911 | /* | |
1912 | * extended beacon time format | |
1913 | * time in usec will be changed into a 32-bit value in extended:internal format | |
1914 | * the extended part is the beacon counts | |
1915 | * the internal part is the time in usec within one beacon interval | |
1916 | */ | |
1917 | u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval) | |
1918 | { | |
1919 | u32 quot; | |
1920 | u32 rem; | |
1921 | u32 interval = beacon_interval * TIME_UNIT; | |
1922 | ||
1923 | if (!interval || !usec) | |
1924 | return 0; | |
1925 | ||
1926 | quot = (usec / interval) & | |
1927 | (iwl_beacon_time_mask_high(priv, | |
1928 | priv->hw_params.beacon_time_tsf_bits) >> | |
1929 | priv->hw_params.beacon_time_tsf_bits); | |
1930 | rem = (usec % interval) & iwl_beacon_time_mask_low(priv, | |
1931 | priv->hw_params.beacon_time_tsf_bits); | |
1932 | ||
1933 | return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; | |
1934 | } | |
a0ee74cf WYG |
1935 | |
1936 | /* base is usually what we get from ucode with each received frame, | |
1937 | * the same as HW timer counter counting down | |
1938 | */ | |
1939 | __le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base, | |
1940 | u32 addon, u32 beacon_interval) | |
1941 | { | |
1942 | u32 base_low = base & iwl_beacon_time_mask_low(priv, | |
1943 | priv->hw_params.beacon_time_tsf_bits); | |
1944 | u32 addon_low = addon & iwl_beacon_time_mask_low(priv, | |
1945 | priv->hw_params.beacon_time_tsf_bits); | |
1946 | u32 interval = beacon_interval * TIME_UNIT; | |
1947 | u32 res = (base & iwl_beacon_time_mask_high(priv, | |
1948 | priv->hw_params.beacon_time_tsf_bits)) + | |
1949 | (addon & iwl_beacon_time_mask_high(priv, | |
1950 | priv->hw_params.beacon_time_tsf_bits)); | |
1951 | ||
1952 | if (base_low > addon_low) | |
1953 | res += base_low - addon_low; | |
1954 | else if (base_low < addon_low) { | |
1955 | res += interval + base_low - addon_low; | |
1956 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
1957 | } else | |
1958 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
1959 | ||
1960 | return cpu_to_le32(res); | |
1961 | } | |
a0ee74cf | 1962 | |
6da3a13e WYG |
1963 | #ifdef CONFIG_PM |
1964 | ||
f60dc013 | 1965 | int iwl_pci_suspend(struct device *device) |
6da3a13e | 1966 | { |
f60dc013 | 1967 | struct pci_dev *pdev = to_pci_dev(device); |
6da3a13e WYG |
1968 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
1969 | ||
1970 | /* | |
1971 | * This function is called when system goes into suspend state | |
1972 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function | |
1973 | * first but since iwl_mac_stop() has no knowledge of who the caller is, | |
1974 | * it will not call apm_ops.stop() to stop the DMA operation. | |
1975 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
1976 | */ | |
14e8e4af | 1977 | iwl_apm_stop(priv); |
6da3a13e | 1978 | |
6da3a13e WYG |
1979 | return 0; |
1980 | } | |
6da3a13e | 1981 | |
f60dc013 | 1982 | int iwl_pci_resume(struct device *device) |
6da3a13e | 1983 | { |
f60dc013 | 1984 | struct pci_dev *pdev = to_pci_dev(device); |
6da3a13e | 1985 | struct iwl_priv *priv = pci_get_drvdata(pdev); |
0ab84cff | 1986 | bool hw_rfkill = false; |
6da3a13e | 1987 | |
cd398c31 AK |
1988 | /* |
1989 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
1990 | * PCI Tx retries from interfering with C3 CPU state. | |
1991 | */ | |
1992 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
1993 | ||
6da3a13e WYG |
1994 | iwl_enable_interrupts(priv); |
1995 | ||
0ab84cff JB |
1996 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
1997 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) | |
1998 | hw_rfkill = true; | |
1999 | ||
2000 | if (hw_rfkill) | |
2001 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
2002 | else | |
2003 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
2004 | ||
2005 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); | |
2006 | ||
6da3a13e WYG |
2007 | return 0; |
2008 | } | |
6da3a13e | 2009 | |
f60dc013 JL |
2010 | const struct dev_pm_ops iwl_pm_ops = { |
2011 | .suspend = iwl_pci_suspend, | |
2012 | .resume = iwl_pci_resume, | |
2013 | .freeze = iwl_pci_suspend, | |
2014 | .thaw = iwl_pci_resume, | |
2015 | .poweroff = iwl_pci_suspend, | |
2016 | .restore = iwl_pci_resume, | |
2017 | }; | |
f60dc013 | 2018 | |
6da3a13e | 2019 | #endif /* CONFIG_PM */ |