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be663ab6 WYG |
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 | */ | |
ef33417d | 67 | static bool bt_coex_active = true; |
be663ab6 WYG |
68 | module_param(bt_coex_active, bool, S_IRUGO); |
69 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); | |
70 | ||
ef33417d JL |
71 | u32 iwlegacy_debug_level; |
72 | EXPORT_SYMBOL(iwlegacy_debug_level); | |
be663ab6 | 73 | |
ef33417d JL |
74 | const u8 iwlegacy_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
75 | EXPORT_SYMBOL(iwlegacy_bcast_addr); | |
be663ab6 WYG |
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; | |
163 | ||
164 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || | |
165 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
166 | IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); | |
167 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | channels = kzalloc(sizeof(struct ieee80211_channel) * | |
172 | priv->channel_count, GFP_KERNEL); | |
173 | if (!channels) | |
174 | return -ENOMEM; | |
175 | ||
176 | rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), | |
177 | GFP_KERNEL); | |
178 | if (!rates) { | |
179 | kfree(channels); | |
180 | return -ENOMEM; | |
181 | } | |
182 | ||
183 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
184 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
ef33417d | 185 | sband->channels = &channels[ARRAY_SIZE(iwlegacy_eeprom_band_1)]; |
be663ab6 WYG |
186 | /* just OFDM */ |
187 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; | |
188 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; | |
189 | ||
190 | if (priv->cfg->sku & IWL_SKU_N) | |
191 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, | |
192 | IEEE80211_BAND_5GHZ); | |
193 | ||
194 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
195 | sband->channels = channels; | |
196 | /* OFDM & CCK */ | |
197 | sband->bitrates = rates; | |
198 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY; | |
199 | ||
200 | if (priv->cfg->sku & IWL_SKU_N) | |
201 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, | |
202 | IEEE80211_BAND_2GHZ); | |
203 | ||
204 | priv->ieee_channels = channels; | |
205 | priv->ieee_rates = rates; | |
206 | ||
207 | for (i = 0; i < priv->channel_count; i++) { | |
208 | ch = &priv->channel_info[i]; | |
209 | ||
210 | if (!iwl_legacy_is_channel_valid(ch)) | |
211 | continue; | |
212 | ||
213 | if (iwl_legacy_is_channel_a_band(ch)) | |
214 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
215 | else | |
216 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
217 | ||
218 | geo_ch = &sband->channels[sband->n_channels++]; | |
219 | ||
220 | geo_ch->center_freq = | |
221 | ieee80211_channel_to_frequency(ch->channel, ch->band); | |
222 | geo_ch->max_power = ch->max_power_avg; | |
223 | geo_ch->max_antenna_gain = 0xff; | |
224 | geo_ch->hw_value = ch->channel; | |
225 | ||
226 | if (iwl_legacy_is_channel_valid(ch)) { | |
227 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) | |
228 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; | |
229 | ||
230 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
231 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
232 | ||
233 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
234 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
235 | ||
236 | geo_ch->flags |= ch->ht40_extension_channel; | |
237 | ||
238 | if (ch->max_power_avg > priv->tx_power_device_lmt) | |
239 | priv->tx_power_device_lmt = ch->max_power_avg; | |
240 | } else { | |
241 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
242 | } | |
243 | ||
244 | IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", | |
245 | ch->channel, geo_ch->center_freq, | |
246 | iwl_legacy_is_channel_a_band(ch) ? "5.2" : "2.4", | |
247 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? | |
248 | "restricted" : "valid", | |
249 | geo_ch->flags); | |
250 | } | |
251 | ||
252 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && | |
253 | priv->cfg->sku & IWL_SKU_A) { | |
254 | IWL_INFO(priv, "Incorrectly detected BG card as ABG. " | |
255 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
256 | priv->pci_dev->device, | |
257 | priv->pci_dev->subsystem_device); | |
258 | priv->cfg->sku &= ~IWL_SKU_A; | |
259 | } | |
260 | ||
261 | IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", | |
262 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, | |
263 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); | |
264 | ||
265 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
266 | ||
267 | return 0; | |
268 | } | |
269 | EXPORT_SYMBOL(iwl_legacy_init_geos); | |
270 | ||
271 | /* | |
272 | * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos | |
273 | */ | |
274 | void iwl_legacy_free_geos(struct iwl_priv *priv) | |
275 | { | |
276 | kfree(priv->ieee_channels); | |
277 | kfree(priv->ieee_rates); | |
278 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
279 | } | |
280 | EXPORT_SYMBOL(iwl_legacy_free_geos); | |
281 | ||
282 | static bool iwl_legacy_is_channel_extension(struct iwl_priv *priv, | |
283 | enum ieee80211_band band, | |
284 | u16 channel, u8 extension_chan_offset) | |
285 | { | |
286 | const struct iwl_channel_info *ch_info; | |
287 | ||
288 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); | |
289 | if (!iwl_legacy_is_channel_valid(ch_info)) | |
290 | return false; | |
291 | ||
292 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
293 | return !(ch_info->ht40_extension_channel & | |
294 | IEEE80211_CHAN_NO_HT40PLUS); | |
295 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) | |
296 | return !(ch_info->ht40_extension_channel & | |
297 | IEEE80211_CHAN_NO_HT40MINUS); | |
298 | ||
299 | return false; | |
300 | } | |
301 | ||
302 | bool iwl_legacy_is_ht40_tx_allowed(struct iwl_priv *priv, | |
303 | struct iwl_rxon_context *ctx, | |
304 | struct ieee80211_sta_ht_cap *ht_cap) | |
305 | { | |
306 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
307 | return false; | |
308 | ||
309 | /* | |
310 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
311 | * the bit will not set if it is pure 40MHz case | |
312 | */ | |
313 | if (ht_cap && !ht_cap->ht_supported) | |
314 | return false; | |
315 | ||
316 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS | |
317 | if (priv->disable_ht40) | |
318 | return false; | |
319 | #endif | |
320 | ||
321 | return iwl_legacy_is_channel_extension(priv, priv->band, | |
322 | le16_to_cpu(ctx->staging.channel), | |
323 | ctx->ht.extension_chan_offset); | |
324 | } | |
325 | EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed); | |
326 | ||
327 | static u16 iwl_legacy_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) | |
328 | { | |
329 | u16 new_val; | |
330 | u16 beacon_factor; | |
331 | ||
332 | /* | |
333 | * If mac80211 hasn't given us a beacon interval, program | |
334 | * the default into the device. | |
335 | */ | |
336 | if (!beacon_val) | |
337 | return DEFAULT_BEACON_INTERVAL; | |
338 | ||
339 | /* | |
340 | * If the beacon interval we obtained from the peer | |
341 | * is too large, we'll have to wake up more often | |
342 | * (and in IBSS case, we'll beacon too much) | |
343 | * | |
344 | * For example, if max_beacon_val is 4096, and the | |
345 | * requested beacon interval is 7000, we'll have to | |
346 | * use 3500 to be able to wake up on the beacons. | |
347 | * | |
348 | * This could badly influence beacon detection stats. | |
349 | */ | |
350 | ||
351 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
352 | new_val = beacon_val / beacon_factor; | |
353 | ||
354 | if (!new_val) | |
355 | new_val = max_beacon_val; | |
356 | ||
357 | return new_val; | |
358 | } | |
359 | ||
360 | int | |
361 | iwl_legacy_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
362 | { | |
363 | u64 tsf; | |
364 | s32 interval_tm, rem; | |
365 | struct ieee80211_conf *conf = NULL; | |
366 | u16 beacon_int; | |
367 | struct ieee80211_vif *vif = ctx->vif; | |
368 | ||
369 | conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw); | |
370 | ||
371 | lockdep_assert_held(&priv->mutex); | |
372 | ||
373 | memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); | |
374 | ||
375 | ctx->timing.timestamp = cpu_to_le64(priv->timestamp); | |
376 | ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
377 | ||
378 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; | |
379 | ||
380 | /* | |
381 | * TODO: For IBSS we need to get atim_window from mac80211, | |
382 | * for now just always use 0 | |
383 | */ | |
384 | ctx->timing.atim_window = 0; | |
385 | ||
386 | beacon_int = iwl_legacy_adjust_beacon_interval(beacon_int, | |
387 | priv->hw_params.max_beacon_itrvl * TIME_UNIT); | |
388 | ctx->timing.beacon_interval = cpu_to_le16(beacon_int); | |
389 | ||
390 | tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ | |
391 | interval_tm = beacon_int * TIME_UNIT; | |
392 | rem = do_div(tsf, interval_tm); | |
393 | ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); | |
394 | ||
395 | ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; | |
396 | ||
397 | IWL_DEBUG_ASSOC(priv, | |
398 | "beacon interval %d beacon timer %d beacon tim %d\n", | |
399 | le16_to_cpu(ctx->timing.beacon_interval), | |
400 | le32_to_cpu(ctx->timing.beacon_init_val), | |
401 | le16_to_cpu(ctx->timing.atim_window)); | |
402 | ||
403 | return iwl_legacy_send_cmd_pdu(priv, ctx->rxon_timing_cmd, | |
404 | sizeof(ctx->timing), &ctx->timing); | |
405 | } | |
406 | EXPORT_SYMBOL(iwl_legacy_send_rxon_timing); | |
407 | ||
408 | void | |
409 | iwl_legacy_set_rxon_hwcrypto(struct iwl_priv *priv, | |
410 | struct iwl_rxon_context *ctx, | |
411 | int hw_decrypt) | |
412 | { | |
413 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
414 | ||
415 | if (hw_decrypt) | |
416 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
417 | else | |
418 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
419 | ||
420 | } | |
421 | EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto); | |
422 | ||
423 | /* validate RXON structure is valid */ | |
424 | int | |
425 | iwl_legacy_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
426 | { | |
427 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
428 | bool error = false; | |
429 | ||
430 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
431 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { | |
432 | IWL_WARN(priv, "check 2.4G: wrong narrow\n"); | |
433 | error = true; | |
434 | } | |
435 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { | |
436 | IWL_WARN(priv, "check 2.4G: wrong radar\n"); | |
437 | error = true; | |
438 | } | |
439 | } else { | |
440 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { | |
441 | IWL_WARN(priv, "check 5.2G: not short slot!\n"); | |
442 | error = true; | |
443 | } | |
444 | if (rxon->flags & RXON_FLG_CCK_MSK) { | |
445 | IWL_WARN(priv, "check 5.2G: CCK!\n"); | |
446 | error = true; | |
447 | } | |
448 | } | |
449 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { | |
450 | IWL_WARN(priv, "mac/bssid mcast!\n"); | |
451 | error = true; | |
452 | } | |
453 | ||
454 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
455 | if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && | |
456 | (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { | |
457 | IWL_WARN(priv, "neither 1 nor 6 are basic\n"); | |
458 | error = true; | |
459 | } | |
460 | ||
461 | if (le16_to_cpu(rxon->assoc_id) > 2007) { | |
462 | IWL_WARN(priv, "aid > 2007\n"); | |
463 | error = true; | |
464 | } | |
465 | ||
466 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) | |
467 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { | |
468 | IWL_WARN(priv, "CCK and short slot\n"); | |
469 | error = true; | |
470 | } | |
471 | ||
472 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) | |
473 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { | |
474 | IWL_WARN(priv, "CCK and auto detect"); | |
475 | error = true; | |
476 | } | |
477 | ||
478 | if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | | |
479 | RXON_FLG_TGG_PROTECT_MSK)) == | |
480 | RXON_FLG_TGG_PROTECT_MSK) { | |
481 | IWL_WARN(priv, "TGg but no auto-detect\n"); | |
482 | error = true; | |
483 | } | |
484 | ||
485 | if (error) | |
486 | IWL_WARN(priv, "Tuning to channel %d\n", | |
487 | le16_to_cpu(rxon->channel)); | |
488 | ||
489 | if (error) { | |
490 | IWL_ERR(priv, "Invalid RXON\n"); | |
491 | return -EINVAL; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd); | |
496 | ||
497 | /** | |
498 | * iwl_legacy_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed | |
499 | * @priv: staging_rxon is compared to active_rxon | |
500 | * | |
501 | * If the RXON structure is changing enough to require a new tune, | |
502 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
503 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
504 | */ | |
505 | int iwl_legacy_full_rxon_required(struct iwl_priv *priv, | |
506 | struct iwl_rxon_context *ctx) | |
507 | { | |
508 | const struct iwl_legacy_rxon_cmd *staging = &ctx->staging; | |
509 | const struct iwl_legacy_rxon_cmd *active = &ctx->active; | |
510 | ||
511 | #define CHK(cond) \ | |
512 | if ((cond)) { \ | |
513 | IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \ | |
514 | return 1; \ | |
515 | } | |
516 | ||
517 | #define CHK_NEQ(c1, c2) \ | |
518 | if ((c1) != (c2)) { \ | |
519 | IWL_DEBUG_INFO(priv, "need full RXON - " \ | |
520 | #c1 " != " #c2 " - %d != %d\n", \ | |
521 | (c1), (c2)); \ | |
522 | return 1; \ | |
523 | } | |
524 | ||
525 | /* These items are only settable from the full RXON command */ | |
526 | CHK(!iwl_legacy_is_associated_ctx(ctx)); | |
527 | CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr)); | |
528 | CHK(compare_ether_addr(staging->node_addr, active->node_addr)); | |
529 | CHK(compare_ether_addr(staging->wlap_bssid_addr, | |
530 | active->wlap_bssid_addr)); | |
531 | CHK_NEQ(staging->dev_type, active->dev_type); | |
532 | CHK_NEQ(staging->channel, active->channel); | |
533 | CHK_NEQ(staging->air_propagation, active->air_propagation); | |
534 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, | |
535 | active->ofdm_ht_single_stream_basic_rates); | |
536 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, | |
537 | active->ofdm_ht_dual_stream_basic_rates); | |
538 | CHK_NEQ(staging->assoc_id, active->assoc_id); | |
539 | ||
540 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
541 | * be updated with the RXON_ASSOC command -- however only some | |
542 | * flag transitions are allowed using RXON_ASSOC */ | |
543 | ||
544 | /* Check if we are not switching bands */ | |
545 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, | |
546 | active->flags & RXON_FLG_BAND_24G_MSK); | |
547 | ||
548 | /* Check if we are switching association toggle */ | |
549 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, | |
550 | active->filter_flags & RXON_FILTER_ASSOC_MSK); | |
551 | ||
552 | #undef CHK | |
553 | #undef CHK_NEQ | |
554 | ||
555 | return 0; | |
556 | } | |
557 | EXPORT_SYMBOL(iwl_legacy_full_rxon_required); | |
558 | ||
559 | u8 iwl_legacy_get_lowest_plcp(struct iwl_priv *priv, | |
560 | struct iwl_rxon_context *ctx) | |
561 | { | |
562 | /* | |
563 | * Assign the lowest rate -- should really get this from | |
564 | * the beacon skb from mac80211. | |
565 | */ | |
566 | if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) | |
567 | return IWL_RATE_1M_PLCP; | |
568 | else | |
569 | return IWL_RATE_6M_PLCP; | |
570 | } | |
571 | EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp); | |
572 | ||
573 | static void _iwl_legacy_set_rxon_ht(struct iwl_priv *priv, | |
574 | struct iwl_ht_config *ht_conf, | |
575 | struct iwl_rxon_context *ctx) | |
576 | { | |
577 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
578 | ||
579 | if (!ctx->ht.enabled) { | |
580 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
581 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | | |
582 | RXON_FLG_HT40_PROT_MSK | | |
583 | RXON_FLG_HT_PROT_MSK); | |
584 | return; | |
585 | } | |
586 | ||
587 | rxon->flags |= cpu_to_le32(ctx->ht.protection << | |
588 | RXON_FLG_HT_OPERATING_MODE_POS); | |
589 | ||
590 | /* Set up channel bandwidth: | |
591 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ | |
592 | /* clear the HT channel mode before set the mode */ | |
593 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
594 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
595 | if (iwl_legacy_is_ht40_tx_allowed(priv, ctx, NULL)) { | |
596 | /* pure ht40 */ | |
597 | if (ctx->ht.protection == | |
598 | IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { | |
599 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; | |
600 | /* Note: control channel is opposite of extension channel */ | |
601 | switch (ctx->ht.extension_chan_offset) { | |
602 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
603 | rxon->flags &= | |
604 | ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
605 | break; | |
606 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
607 | rxon->flags |= | |
608 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
609 | break; | |
610 | } | |
611 | } else { | |
612 | /* Note: control channel is opposite of extension channel */ | |
613 | switch (ctx->ht.extension_chan_offset) { | |
614 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
615 | rxon->flags &= | |
616 | ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
617 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
618 | break; | |
619 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
620 | rxon->flags |= | |
621 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
622 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
623 | break; | |
624 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
625 | default: | |
626 | /* channel location only valid if in Mixed mode */ | |
627 | IWL_ERR(priv, | |
628 | "invalid extension channel offset\n"); | |
629 | break; | |
630 | } | |
631 | } | |
632 | } else { | |
633 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
634 | } | |
635 | ||
636 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
637 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
638 | ||
639 | IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " | |
640 | "extension channel offset 0x%x\n", | |
641 | le32_to_cpu(rxon->flags), ctx->ht.protection, | |
642 | ctx->ht.extension_chan_offset); | |
643 | } | |
644 | ||
645 | void iwl_legacy_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) | |
646 | { | |
647 | struct iwl_rxon_context *ctx; | |
648 | ||
649 | for_each_context(priv, ctx) | |
650 | _iwl_legacy_set_rxon_ht(priv, ht_conf, ctx); | |
651 | } | |
652 | EXPORT_SYMBOL(iwl_legacy_set_rxon_ht); | |
653 | ||
654 | /* Return valid, unused, channel for a passive scan to reset the RF */ | |
655 | u8 iwl_legacy_get_single_channel_number(struct iwl_priv *priv, | |
656 | enum ieee80211_band band) | |
657 | { | |
658 | const struct iwl_channel_info *ch_info; | |
659 | int i; | |
660 | u8 channel = 0; | |
661 | u8 min, max; | |
662 | struct iwl_rxon_context *ctx; | |
663 | ||
664 | if (band == IEEE80211_BAND_5GHZ) { | |
665 | min = 14; | |
666 | max = priv->channel_count; | |
667 | } else { | |
668 | min = 0; | |
669 | max = 14; | |
670 | } | |
671 | ||
672 | for (i = min; i < max; i++) { | |
673 | bool busy = false; | |
674 | ||
675 | for_each_context(priv, ctx) { | |
676 | busy = priv->channel_info[i].channel == | |
677 | le16_to_cpu(ctx->staging.channel); | |
678 | if (busy) | |
679 | break; | |
680 | } | |
681 | ||
682 | if (busy) | |
683 | continue; | |
684 | ||
685 | channel = priv->channel_info[i].channel; | |
686 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); | |
687 | if (iwl_legacy_is_channel_valid(ch_info)) | |
688 | break; | |
689 | } | |
690 | ||
691 | return channel; | |
692 | } | |
693 | EXPORT_SYMBOL(iwl_legacy_get_single_channel_number); | |
694 | ||
695 | /** | |
696 | * iwl_legacy_set_rxon_channel - Set the band and channel values in staging RXON | |
697 | * @ch: requested channel as a pointer to struct ieee80211_channel | |
698 | ||
699 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
700 | * in the staging RXON flag structure based on the ch->band | |
701 | */ | |
702 | int | |
703 | iwl_legacy_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, | |
704 | struct iwl_rxon_context *ctx) | |
705 | { | |
706 | enum ieee80211_band band = ch->band; | |
707 | u16 channel = ch->hw_value; | |
708 | ||
709 | if ((le16_to_cpu(ctx->staging.channel) == channel) && | |
710 | (priv->band == band)) | |
711 | return 0; | |
712 | ||
713 | ctx->staging.channel = cpu_to_le16(channel); | |
714 | if (band == IEEE80211_BAND_5GHZ) | |
715 | ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK; | |
716 | else | |
717 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; | |
718 | ||
719 | priv->band = band; | |
720 | ||
721 | IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | EXPORT_SYMBOL(iwl_legacy_set_rxon_channel); | |
726 | ||
727 | void iwl_legacy_set_flags_for_band(struct iwl_priv *priv, | |
728 | struct iwl_rxon_context *ctx, | |
729 | enum ieee80211_band band, | |
730 | struct ieee80211_vif *vif) | |
731 | { | |
732 | if (band == IEEE80211_BAND_5GHZ) { | |
733 | ctx->staging.flags &= | |
734 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
735 | | RXON_FLG_CCK_MSK); | |
736 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
737 | } else { | |
738 | /* Copied from iwl_post_associate() */ | |
739 | if (vif && vif->bss_conf.use_short_slot) | |
740 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
741 | else | |
742 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
743 | ||
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; | |
747 | } | |
748 | } | |
749 | EXPORT_SYMBOL(iwl_legacy_set_flags_for_band); | |
750 | ||
751 | /* | |
752 | * initialize rxon structure with default values from eeprom | |
753 | */ | |
754 | void iwl_legacy_connection_init_rx_config(struct iwl_priv *priv, | |
755 | struct iwl_rxon_context *ctx) | |
756 | { | |
757 | const struct iwl_channel_info *ch_info; | |
758 | ||
759 | memset(&ctx->staging, 0, sizeof(ctx->staging)); | |
760 | ||
761 | if (!ctx->vif) { | |
762 | ctx->staging.dev_type = ctx->unused_devtype; | |
763 | } else | |
764 | switch (ctx->vif->type) { | |
765 | ||
766 | case NL80211_IFTYPE_STATION: | |
767 | ctx->staging.dev_type = ctx->station_devtype; | |
768 | ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
769 | break; | |
770 | ||
771 | case NL80211_IFTYPE_ADHOC: | |
772 | ctx->staging.dev_type = ctx->ibss_devtype; | |
773 | ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
774 | ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
775 | RXON_FILTER_ACCEPT_GRP_MSK; | |
776 | break; | |
777 | ||
778 | default: | |
779 | IWL_ERR(priv, "Unsupported interface type %d\n", | |
780 | ctx->vif->type); | |
781 | break; | |
782 | } | |
783 | ||
784 | #if 0 | |
785 | /* TODO: Figure out when short_preamble would be set and cache from | |
786 | * that */ | |
787 | if (!hw_to_local(priv->hw)->short_preamble) | |
788 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
789 | else | |
790 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
791 | #endif | |
792 | ||
793 | ch_info = iwl_legacy_get_channel_info(priv, priv->band, | |
794 | le16_to_cpu(ctx->active.channel)); | |
795 | ||
796 | if (!ch_info) | |
797 | ch_info = &priv->channel_info[0]; | |
798 | ||
799 | ctx->staging.channel = cpu_to_le16(ch_info->channel); | |
800 | priv->band = ch_info->band; | |
801 | ||
802 | iwl_legacy_set_flags_for_band(priv, ctx, priv->band, ctx->vif); | |
803 | ||
804 | ctx->staging.ofdm_basic_rates = | |
805 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
806 | ctx->staging.cck_basic_rates = | |
807 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
808 | ||
809 | /* clear both MIX and PURE40 mode flag */ | |
810 | ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | | |
811 | RXON_FLG_CHANNEL_MODE_PURE_40); | |
812 | if (ctx->vif) | |
813 | memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); | |
814 | ||
815 | ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; | |
816 | ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; | |
817 | } | |
818 | EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config); | |
819 | ||
820 | void iwl_legacy_set_rate(struct iwl_priv *priv) | |
821 | { | |
822 | const struct ieee80211_supported_band *hw = NULL; | |
823 | struct ieee80211_rate *rate; | |
824 | struct iwl_rxon_context *ctx; | |
825 | int i; | |
826 | ||
827 | hw = iwl_get_hw_mode(priv, priv->band); | |
828 | if (!hw) { | |
829 | IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); | |
830 | return; | |
831 | } | |
832 | ||
833 | priv->active_rate = 0; | |
834 | ||
835 | for (i = 0; i < hw->n_bitrates; i++) { | |
836 | rate = &(hw->bitrates[i]); | |
837 | if (rate->hw_value < IWL_RATE_COUNT_LEGACY) | |
838 | priv->active_rate |= (1 << rate->hw_value); | |
839 | } | |
840 | ||
841 | IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); | |
842 | ||
843 | for_each_context(priv, ctx) { | |
844 | ctx->staging.cck_basic_rates = | |
845 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
846 | ||
847 | ctx->staging.ofdm_basic_rates = | |
848 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
849 | } | |
850 | } | |
851 | EXPORT_SYMBOL(iwl_legacy_set_rate); | |
852 | ||
853 | void iwl_legacy_chswitch_done(struct iwl_priv *priv, bool is_success) | |
854 | { | |
855 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
856 | ||
857 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
858 | return; | |
859 | ||
860 | if (priv->switch_rxon.switch_in_progress) { | |
861 | ieee80211_chswitch_done(ctx->vif, is_success); | |
862 | mutex_lock(&priv->mutex); | |
863 | priv->switch_rxon.switch_in_progress = false; | |
864 | mutex_unlock(&priv->mutex); | |
865 | } | |
866 | } | |
867 | EXPORT_SYMBOL(iwl_legacy_chswitch_done); | |
868 | ||
869 | void iwl_legacy_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) | |
870 | { | |
871 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
872 | struct iwl_csa_notification *csa = &(pkt->u.csa_notif); | |
873 | ||
874 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
875 | struct iwl_legacy_rxon_cmd *rxon = (void *)&ctx->active; | |
876 | ||
877 | if (priv->switch_rxon.switch_in_progress) { | |
878 | if (!le32_to_cpu(csa->status) && | |
879 | (csa->channel == priv->switch_rxon.channel)) { | |
880 | rxon->channel = csa->channel; | |
881 | ctx->staging.channel = csa->channel; | |
882 | IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", | |
883 | le16_to_cpu(csa->channel)); | |
884 | iwl_legacy_chswitch_done(priv, true); | |
885 | } else { | |
886 | IWL_ERR(priv, "CSA notif (fail) : channel %d\n", | |
887 | le16_to_cpu(csa->channel)); | |
888 | iwl_legacy_chswitch_done(priv, false); | |
889 | } | |
890 | } | |
891 | } | |
892 | EXPORT_SYMBOL(iwl_legacy_rx_csa); | |
893 | ||
894 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
895 | void iwl_legacy_print_rx_config_cmd(struct iwl_priv *priv, | |
896 | struct iwl_rxon_context *ctx) | |
897 | { | |
898 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
899 | ||
900 | IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); | |
901 | iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); | |
902 | IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", | |
903 | le16_to_cpu(rxon->channel)); | |
904 | IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
905 | IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", | |
906 | le32_to_cpu(rxon->filter_flags)); | |
907 | IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); | |
908 | IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", | |
909 | rxon->ofdm_basic_rates); | |
910 | IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", | |
911 | rxon->cck_basic_rates); | |
912 | IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); | |
913 | IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
914 | IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", | |
915 | le16_to_cpu(rxon->assoc_id)); | |
916 | } | |
917 | EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd); | |
918 | #endif | |
919 | /** | |
920 | * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card | |
921 | */ | |
922 | void iwl_legacy_irq_handle_error(struct iwl_priv *priv) | |
923 | { | |
924 | /* Set the FW error flag -- cleared on iwl_down */ | |
925 | set_bit(STATUS_FW_ERROR, &priv->status); | |
926 | ||
927 | /* Cancel currently queued command. */ | |
928 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
929 | ||
930 | IWL_ERR(priv, "Loaded firmware version: %s\n", | |
931 | priv->hw->wiphy->fw_version); | |
932 | ||
933 | priv->cfg->ops->lib->dump_nic_error_log(priv); | |
934 | if (priv->cfg->ops->lib->dump_fh) | |
935 | priv->cfg->ops->lib->dump_fh(priv, NULL, false); | |
936 | priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); | |
937 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
938 | if (iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) | |
939 | iwl_legacy_print_rx_config_cmd(priv, | |
940 | &priv->contexts[IWL_RXON_CTX_BSS]); | |
941 | #endif | |
942 | ||
943 | wake_up_interruptible(&priv->wait_command_queue); | |
944 | ||
945 | /* Keep the restart process from trying to send host | |
946 | * commands by clearing the INIT status bit */ | |
947 | clear_bit(STATUS_READY, &priv->status); | |
948 | ||
949 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
950 | IWL_DEBUG(priv, IWL_DL_FW_ERRORS, | |
951 | "Restarting adapter due to uCode error.\n"); | |
952 | ||
953 | if (priv->cfg->mod_params->restart_fw) | |
954 | queue_work(priv->workqueue, &priv->restart); | |
955 | } | |
956 | } | |
957 | EXPORT_SYMBOL(iwl_legacy_irq_handle_error); | |
958 | ||
959 | static int iwl_legacy_apm_stop_master(struct iwl_priv *priv) | |
960 | { | |
961 | int ret = 0; | |
962 | ||
963 | /* stop device's busmaster DMA activity */ | |
964 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); | |
965 | ||
966 | ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, | |
967 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
968 | if (ret) | |
969 | IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); | |
970 | ||
971 | IWL_DEBUG_INFO(priv, "stop master\n"); | |
972 | ||
973 | return ret; | |
974 | } | |
975 | ||
976 | void iwl_legacy_apm_stop(struct iwl_priv *priv) | |
977 | { | |
978 | IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); | |
979 | ||
980 | /* Stop device's DMA activity */ | |
981 | iwl_legacy_apm_stop_master(priv); | |
982 | ||
983 | /* Reset the entire device */ | |
984 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
985 | ||
986 | udelay(10); | |
987 | ||
988 | /* | |
989 | * Clear "initialization complete" bit to move adapter from | |
990 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
991 | */ | |
992 | iwl_legacy_clear_bit(priv, CSR_GP_CNTRL, | |
993 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
994 | } | |
995 | EXPORT_SYMBOL(iwl_legacy_apm_stop); | |
996 | ||
997 | ||
998 | /* | |
999 | * Start up NIC's basic functionality after it has been reset | |
1000 | * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop()) | |
1001 | * NOTE: This does not load uCode nor start the embedded processor | |
1002 | */ | |
1003 | int iwl_legacy_apm_init(struct iwl_priv *priv) | |
1004 | { | |
1005 | int ret = 0; | |
1006 | u16 lctl; | |
1007 | ||
1008 | IWL_DEBUG_INFO(priv, "Init card's basic functions\n"); | |
1009 | ||
1010 | /* | |
1011 | * Use "set_bit" below rather than "write", to preserve any hardware | |
1012 | * bits already set by default after reset. | |
1013 | */ | |
1014 | ||
1015 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
1016 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1017 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
1018 | ||
1019 | /* | |
1020 | * Disable L0s without affecting L1; | |
1021 | * don't wait for ICH L0s (ICH bug W/A) | |
1022 | */ | |
1023 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1024 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); | |
1025 | ||
1026 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
1027 | iwl_legacy_set_bit(priv, CSR_DBG_HPET_MEM_REG, | |
1028 | CSR_DBG_HPET_MEM_REG_VAL); | |
1029 | ||
1030 | /* | |
1031 | * Enable HAP INTA (interrupt from management bus) to | |
1032 | * wake device's PCI Express link L1a -> L0s | |
25985edc | 1033 | * NOTE: This is no-op for 3945 (non-existent bit) |
be663ab6 WYG |
1034 | */ |
1035 | iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG, | |
1036 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); | |
1037 | ||
1038 | /* | |
1039 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. | |
1040 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
1041 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
1042 | * costs negligible amount of power savings. | |
1043 | * If not (unlikely), enable L0S, so there is at least some | |
1044 | * power savings, even without L1. | |
1045 | */ | |
1046 | if (priv->cfg->base_params->set_l0s) { | |
1047 | lctl = iwl_legacy_pcie_link_ctl(priv); | |
1048 | if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == | |
1049 | PCI_CFG_LINK_CTRL_VAL_L1_EN) { | |
1050 | /* L1-ASPM enabled; disable(!) L0S */ | |
1051 | iwl_legacy_set_bit(priv, CSR_GIO_REG, | |
1052 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1053 | IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); | |
1054 | } else { | |
1055 | /* L1-ASPM disabled; enable(!) L0S */ | |
1056 | iwl_legacy_clear_bit(priv, CSR_GIO_REG, | |
1057 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1058 | IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); | |
1059 | } | |
1060 | } | |
1061 | ||
1062 | /* Configure analog phase-lock-loop before activating to D0A */ | |
1063 | if (priv->cfg->base_params->pll_cfg_val) | |
1064 | iwl_legacy_set_bit(priv, CSR_ANA_PLL_CFG, | |
1065 | priv->cfg->base_params->pll_cfg_val); | |
1066 | ||
1067 | /* | |
1068 | * Set "initialization complete" bit to move adapter from | |
1069 | * D0U* --> D0A* (powered-up active) state. | |
1070 | */ | |
1071 | iwl_legacy_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1072 | ||
1073 | /* | |
1074 | * Wait for clock stabilization; once stabilized, access to | |
1075 | * device-internal resources is supported, e.g. iwl_legacy_write_prph() | |
1076 | * and accesses to uCode SRAM. | |
1077 | */ | |
1078 | ret = iwl_poll_bit(priv, CSR_GP_CNTRL, | |
1079 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1080 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
1081 | if (ret < 0) { | |
1082 | IWL_DEBUG_INFO(priv, "Failed to init the card\n"); | |
1083 | goto out; | |
1084 | } | |
1085 | ||
1086 | /* | |
1087 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
1088 | * BSM (Boostrap State Machine) is only in 3945 and 4965. | |
1089 | * | |
1090 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
1091 | * do not disable clocks. This preserves any hardware bits already | |
1092 | * set by default in "CLK_CTRL_REG" after reset. | |
1093 | */ | |
1094 | if (priv->cfg->base_params->use_bsm) | |
1095 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, | |
1096 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); | |
1097 | else | |
1098 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, | |
1099 | APMG_CLK_VAL_DMA_CLK_RQT); | |
1100 | udelay(20); | |
1101 | ||
1102 | /* Disable L1-Active */ | |
1103 | iwl_legacy_set_bits_prph(priv, APMG_PCIDEV_STT_REG, | |
1104 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
1105 | ||
1106 | out: | |
1107 | return ret; | |
1108 | } | |
1109 | EXPORT_SYMBOL(iwl_legacy_apm_init); | |
1110 | ||
1111 | ||
1112 | int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) | |
1113 | { | |
1114 | int ret; | |
1115 | s8 prev_tx_power; | |
43f12d47 SG |
1116 | bool defer; |
1117 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
be663ab6 WYG |
1118 | |
1119 | lockdep_assert_held(&priv->mutex); | |
1120 | ||
1121 | if (priv->tx_power_user_lmt == tx_power && !force) | |
1122 | return 0; | |
1123 | ||
1124 | if (!priv->cfg->ops->lib->send_tx_power) | |
1125 | return -EOPNOTSUPP; | |
1126 | ||
1127 | if (tx_power < IWL4965_TX_POWER_TARGET_POWER_MIN) { | |
1128 | IWL_WARN(priv, | |
1129 | "Requested user TXPOWER %d below lower limit %d.\n", | |
1130 | tx_power, | |
1131 | IWL4965_TX_POWER_TARGET_POWER_MIN); | |
1132 | return -EINVAL; | |
1133 | } | |
1134 | ||
1135 | if (tx_power > priv->tx_power_device_lmt) { | |
1136 | IWL_WARN(priv, | |
1137 | "Requested user TXPOWER %d above upper limit %d.\n", | |
1138 | tx_power, priv->tx_power_device_lmt); | |
1139 | return -EINVAL; | |
1140 | } | |
1141 | ||
1142 | if (!iwl_legacy_is_ready_rf(priv)) | |
1143 | return -EIO; | |
1144 | ||
43f12d47 SG |
1145 | /* scan complete and commit_rxon use tx_power_next value, |
1146 | * it always need to be updated for newest request */ | |
be663ab6 | 1147 | priv->tx_power_next = tx_power; |
43f12d47 SG |
1148 | |
1149 | /* do not set tx power when scanning or channel changing */ | |
1150 | defer = test_bit(STATUS_SCANNING, &priv->status) || | |
1151 | memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); | |
1152 | if (defer && !force) { | |
1153 | IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); | |
be663ab6 WYG |
1154 | return 0; |
1155 | } | |
1156 | ||
1157 | prev_tx_power = priv->tx_power_user_lmt; | |
1158 | priv->tx_power_user_lmt = tx_power; | |
1159 | ||
1160 | ret = priv->cfg->ops->lib->send_tx_power(priv); | |
1161 | ||
1162 | /* if fail to set tx_power, restore the orig. tx power */ | |
1163 | if (ret) { | |
1164 | priv->tx_power_user_lmt = prev_tx_power; | |
1165 | priv->tx_power_next = prev_tx_power; | |
1166 | } | |
1167 | return ret; | |
1168 | } | |
1169 | EXPORT_SYMBOL(iwl_legacy_set_tx_power); | |
1170 | ||
1171 | void iwl_legacy_send_bt_config(struct iwl_priv *priv) | |
1172 | { | |
1173 | struct iwl_bt_cmd bt_cmd = { | |
1174 | .lead_time = BT_LEAD_TIME_DEF, | |
1175 | .max_kill = BT_MAX_KILL_DEF, | |
1176 | .kill_ack_mask = 0, | |
1177 | .kill_cts_mask = 0, | |
1178 | }; | |
1179 | ||
1180 | if (!bt_coex_active) | |
1181 | bt_cmd.flags = BT_COEX_DISABLE; | |
1182 | else | |
1183 | bt_cmd.flags = BT_COEX_ENABLE; | |
1184 | ||
1185 | IWL_DEBUG_INFO(priv, "BT coex %s\n", | |
1186 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); | |
1187 | ||
1188 | if (iwl_legacy_send_cmd_pdu(priv, REPLY_BT_CONFIG, | |
1189 | sizeof(struct iwl_bt_cmd), &bt_cmd)) | |
1190 | IWL_ERR(priv, "failed to send BT Coex Config\n"); | |
1191 | } | |
1192 | EXPORT_SYMBOL(iwl_legacy_send_bt_config); | |
1193 | ||
1194 | int iwl_legacy_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) | |
1195 | { | |
1196 | struct iwl_statistics_cmd statistics_cmd = { | |
1197 | .configuration_flags = | |
1198 | clear ? IWL_STATS_CONF_CLEAR_STATS : 0, | |
1199 | }; | |
1200 | ||
1201 | if (flags & CMD_ASYNC) | |
1202 | return iwl_legacy_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, | |
1203 | sizeof(struct iwl_statistics_cmd), | |
1204 | &statistics_cmd, NULL); | |
1205 | else | |
1206 | return iwl_legacy_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, | |
1207 | sizeof(struct iwl_statistics_cmd), | |
1208 | &statistics_cmd); | |
1209 | } | |
1210 | EXPORT_SYMBOL(iwl_legacy_send_statistics_request); | |
1211 | ||
1212 | void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv *priv, | |
1213 | struct iwl_rx_mem_buffer *rxb) | |
1214 | { | |
1215 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
1216 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1217 | struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); | |
1218 | IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", | |
1219 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); | |
1220 | #endif | |
1221 | } | |
1222 | EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif); | |
1223 | ||
1224 | void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv *priv, | |
1225 | struct iwl_rx_mem_buffer *rxb) | |
1226 | { | |
1227 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1228 | u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; | |
1229 | IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " | |
1230 | "notification for %s:\n", len, | |
1231 | iwl_legacy_get_cmd_string(pkt->hdr.cmd)); | |
1232 | iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); | |
1233 | } | |
1234 | EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif); | |
1235 | ||
1236 | void iwl_legacy_rx_reply_error(struct iwl_priv *priv, | |
1237 | struct iwl_rx_mem_buffer *rxb) | |
1238 | { | |
1239 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1240 | ||
1241 | IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " | |
1242 | "seq 0x%04X ser 0x%08X\n", | |
1243 | le32_to_cpu(pkt->u.err_resp.error_type), | |
1244 | iwl_legacy_get_cmd_string(pkt->u.err_resp.cmd_id), | |
1245 | pkt->u.err_resp.cmd_id, | |
1246 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
1247 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
1248 | } | |
1249 | EXPORT_SYMBOL(iwl_legacy_rx_reply_error); | |
1250 | ||
1251 | void iwl_legacy_clear_isr_stats(struct iwl_priv *priv) | |
1252 | { | |
1253 | memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); | |
1254 | } | |
1255 | ||
1256 | int iwl_legacy_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
1257 | const struct ieee80211_tx_queue_params *params) | |
1258 | { | |
1259 | struct iwl_priv *priv = hw->priv; | |
1260 | struct iwl_rxon_context *ctx; | |
1261 | unsigned long flags; | |
1262 | int q; | |
1263 | ||
1264 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1265 | ||
1266 | if (!iwl_legacy_is_ready_rf(priv)) { | |
1267 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
1268 | return -EIO; | |
1269 | } | |
1270 | ||
1271 | if (queue >= AC_NUM) { | |
1272 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | q = AC_NUM - 1 - queue; | |
1277 | ||
1278 | spin_lock_irqsave(&priv->lock, flags); | |
1279 | ||
1280 | for_each_context(priv, ctx) { | |
1281 | ctx->qos_data.def_qos_parm.ac[q].cw_min = | |
1282 | cpu_to_le16(params->cw_min); | |
1283 | ctx->qos_data.def_qos_parm.ac[q].cw_max = | |
1284 | cpu_to_le16(params->cw_max); | |
1285 | ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
1286 | ctx->qos_data.def_qos_parm.ac[q].edca_txop = | |
1287 | cpu_to_le16((params->txop * 32)); | |
1288 | ||
1289 | ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
1290 | } | |
1291 | ||
1292 | spin_unlock_irqrestore(&priv->lock, flags); | |
1293 | ||
1294 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1295 | return 0; | |
1296 | } | |
1297 | EXPORT_SYMBOL(iwl_legacy_mac_conf_tx); | |
1298 | ||
1299 | int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw *hw) | |
1300 | { | |
1301 | struct iwl_priv *priv = hw->priv; | |
1302 | ||
1303 | return priv->ibss_manager == IWL_IBSS_MANAGER; | |
1304 | } | |
1305 | EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon); | |
1306 | ||
1307 | static int | |
1308 | iwl_legacy_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
1309 | { | |
1310 | iwl_legacy_connection_init_rx_config(priv, ctx); | |
1311 | ||
1312 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
1313 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
1314 | ||
1315 | return iwl_legacy_commit_rxon(priv, ctx); | |
1316 | } | |
1317 | ||
1318 | static int iwl_legacy_setup_interface(struct iwl_priv *priv, | |
1319 | struct iwl_rxon_context *ctx) | |
1320 | { | |
1321 | struct ieee80211_vif *vif = ctx->vif; | |
1322 | int err; | |
1323 | ||
1324 | lockdep_assert_held(&priv->mutex); | |
1325 | ||
1326 | /* | |
1327 | * This variable will be correct only when there's just | |
1328 | * a single context, but all code using it is for hardware | |
1329 | * that supports only one context. | |
1330 | */ | |
1331 | priv->iw_mode = vif->type; | |
1332 | ||
1333 | ctx->is_active = true; | |
1334 | ||
1335 | err = iwl_legacy_set_mode(priv, ctx); | |
1336 | if (err) { | |
1337 | if (!ctx->always_active) | |
1338 | ctx->is_active = false; | |
1339 | return err; | |
1340 | } | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | int | |
1346 | iwl_legacy_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
1347 | { | |
1348 | struct iwl_priv *priv = hw->priv; | |
1349 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
1350 | struct iwl_rxon_context *tmp, *ctx = NULL; | |
1351 | int err; | |
1352 | ||
1353 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", | |
1354 | vif->type, vif->addr); | |
1355 | ||
1356 | mutex_lock(&priv->mutex); | |
1357 | ||
1358 | if (!iwl_legacy_is_ready_rf(priv)) { | |
1359 | IWL_WARN(priv, "Try to add interface when device not ready\n"); | |
1360 | err = -EINVAL; | |
1361 | goto out; | |
1362 | } | |
1363 | ||
1364 | for_each_context(priv, tmp) { | |
1365 | u32 possible_modes = | |
1366 | tmp->interface_modes | tmp->exclusive_interface_modes; | |
1367 | ||
1368 | if (tmp->vif) { | |
1369 | /* check if this busy context is exclusive */ | |
1370 | if (tmp->exclusive_interface_modes & | |
1371 | BIT(tmp->vif->type)) { | |
1372 | err = -EINVAL; | |
1373 | goto out; | |
1374 | } | |
1375 | continue; | |
1376 | } | |
1377 | ||
1378 | if (!(possible_modes & BIT(vif->type))) | |
1379 | continue; | |
1380 | ||
1381 | /* have maybe usable context w/o interface */ | |
1382 | ctx = tmp; | |
1383 | break; | |
1384 | } | |
1385 | ||
1386 | if (!ctx) { | |
1387 | err = -EOPNOTSUPP; | |
1388 | goto out; | |
1389 | } | |
1390 | ||
1391 | vif_priv->ctx = ctx; | |
1392 | ctx->vif = vif; | |
1393 | ||
1394 | err = iwl_legacy_setup_interface(priv, ctx); | |
1395 | if (!err) | |
1396 | goto out; | |
1397 | ||
1398 | ctx->vif = NULL; | |
1399 | priv->iw_mode = NL80211_IFTYPE_STATION; | |
1400 | out: | |
1401 | mutex_unlock(&priv->mutex); | |
1402 | ||
1403 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1404 | return err; | |
1405 | } | |
1406 | EXPORT_SYMBOL(iwl_legacy_mac_add_interface); | |
1407 | ||
1408 | static void iwl_legacy_teardown_interface(struct iwl_priv *priv, | |
1409 | struct ieee80211_vif *vif, | |
1410 | bool mode_change) | |
1411 | { | |
1412 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1413 | ||
1414 | lockdep_assert_held(&priv->mutex); | |
1415 | ||
1416 | if (priv->scan_vif == vif) { | |
1417 | iwl_legacy_scan_cancel_timeout(priv, 200); | |
1418 | iwl_legacy_force_scan_end(priv); | |
1419 | } | |
1420 | ||
1421 | if (!mode_change) { | |
1422 | iwl_legacy_set_mode(priv, ctx); | |
1423 | if (!ctx->always_active) | |
1424 | ctx->is_active = false; | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | void iwl_legacy_mac_remove_interface(struct ieee80211_hw *hw, | |
1429 | struct ieee80211_vif *vif) | |
1430 | { | |
1431 | struct iwl_priv *priv = hw->priv; | |
1432 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1433 | ||
1434 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1435 | ||
1436 | mutex_lock(&priv->mutex); | |
1437 | ||
1438 | WARN_ON(ctx->vif != vif); | |
1439 | ctx->vif = NULL; | |
1440 | ||
1441 | iwl_legacy_teardown_interface(priv, vif, false); | |
1442 | ||
1443 | memset(priv->bssid, 0, ETH_ALEN); | |
1444 | mutex_unlock(&priv->mutex); | |
1445 | ||
1446 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1447 | ||
1448 | } | |
1449 | EXPORT_SYMBOL(iwl_legacy_mac_remove_interface); | |
1450 | ||
1451 | int iwl_legacy_alloc_txq_mem(struct iwl_priv *priv) | |
1452 | { | |
1453 | if (!priv->txq) | |
1454 | priv->txq = kzalloc( | |
1455 | sizeof(struct iwl_tx_queue) * | |
1456 | priv->cfg->base_params->num_of_queues, | |
1457 | GFP_KERNEL); | |
1458 | if (!priv->txq) { | |
1459 | IWL_ERR(priv, "Not enough memory for txq\n"); | |
1460 | return -ENOMEM; | |
1461 | } | |
1462 | return 0; | |
1463 | } | |
1464 | EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem); | |
1465 | ||
1466 | void iwl_legacy_txq_mem(struct iwl_priv *priv) | |
1467 | { | |
1468 | kfree(priv->txq); | |
1469 | priv->txq = NULL; | |
1470 | } | |
1471 | EXPORT_SYMBOL(iwl_legacy_txq_mem); | |
1472 | ||
1473 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS | |
1474 | ||
1475 | #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) | |
1476 | ||
1477 | void iwl_legacy_reset_traffic_log(struct iwl_priv *priv) | |
1478 | { | |
1479 | priv->tx_traffic_idx = 0; | |
1480 | priv->rx_traffic_idx = 0; | |
1481 | if (priv->tx_traffic) | |
1482 | memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1483 | if (priv->rx_traffic) | |
1484 | memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1485 | } | |
1486 | ||
1487 | int iwl_legacy_alloc_traffic_mem(struct iwl_priv *priv) | |
1488 | { | |
1489 | u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; | |
1490 | ||
ef33417d | 1491 | if (iwlegacy_debug_level & IWL_DL_TX) { |
be663ab6 WYG |
1492 | if (!priv->tx_traffic) { |
1493 | priv->tx_traffic = | |
1494 | kzalloc(traffic_size, GFP_KERNEL); | |
1495 | if (!priv->tx_traffic) | |
1496 | return -ENOMEM; | |
1497 | } | |
1498 | } | |
ef33417d | 1499 | if (iwlegacy_debug_level & IWL_DL_RX) { |
be663ab6 WYG |
1500 | if (!priv->rx_traffic) { |
1501 | priv->rx_traffic = | |
1502 | kzalloc(traffic_size, GFP_KERNEL); | |
1503 | if (!priv->rx_traffic) | |
1504 | return -ENOMEM; | |
1505 | } | |
1506 | } | |
1507 | iwl_legacy_reset_traffic_log(priv); | |
1508 | return 0; | |
1509 | } | |
1510 | EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem); | |
1511 | ||
1512 | void iwl_legacy_free_traffic_mem(struct iwl_priv *priv) | |
1513 | { | |
1514 | kfree(priv->tx_traffic); | |
1515 | priv->tx_traffic = NULL; | |
1516 | ||
1517 | kfree(priv->rx_traffic); | |
1518 | priv->rx_traffic = NULL; | |
1519 | } | |
1520 | EXPORT_SYMBOL(iwl_legacy_free_traffic_mem); | |
1521 | ||
1522 | void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv *priv, | |
1523 | u16 length, struct ieee80211_hdr *header) | |
1524 | { | |
1525 | __le16 fc; | |
1526 | u16 len; | |
1527 | ||
ef33417d | 1528 | if (likely(!(iwlegacy_debug_level & IWL_DL_TX))) |
be663ab6 WYG |
1529 | return; |
1530 | ||
1531 | if (!priv->tx_traffic) | |
1532 | return; | |
1533 | ||
1534 | fc = header->frame_control; | |
1535 | if (ieee80211_is_data(fc)) { | |
1536 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1537 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1538 | memcpy((priv->tx_traffic + | |
1539 | (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1540 | header, len); | |
1541 | priv->tx_traffic_idx = | |
1542 | (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1543 | } | |
1544 | } | |
1545 | EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame); | |
1546 | ||
1547 | void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv *priv, | |
1548 | u16 length, struct ieee80211_hdr *header) | |
1549 | { | |
1550 | __le16 fc; | |
1551 | u16 len; | |
1552 | ||
ef33417d | 1553 | if (likely(!(iwlegacy_debug_level & IWL_DL_RX))) |
be663ab6 WYG |
1554 | return; |
1555 | ||
1556 | if (!priv->rx_traffic) | |
1557 | return; | |
1558 | ||
1559 | fc = header->frame_control; | |
1560 | if (ieee80211_is_data(fc)) { | |
1561 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1562 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1563 | memcpy((priv->rx_traffic + | |
1564 | (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1565 | header, len); | |
1566 | priv->rx_traffic_idx = | |
1567 | (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1568 | } | |
1569 | } | |
1570 | EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame); | |
1571 | ||
1572 | const char *iwl_legacy_get_mgmt_string(int cmd) | |
1573 | { | |
1574 | switch (cmd) { | |
1575 | IWL_CMD(MANAGEMENT_ASSOC_REQ); | |
1576 | IWL_CMD(MANAGEMENT_ASSOC_RESP); | |
1577 | IWL_CMD(MANAGEMENT_REASSOC_REQ); | |
1578 | IWL_CMD(MANAGEMENT_REASSOC_RESP); | |
1579 | IWL_CMD(MANAGEMENT_PROBE_REQ); | |
1580 | IWL_CMD(MANAGEMENT_PROBE_RESP); | |
1581 | IWL_CMD(MANAGEMENT_BEACON); | |
1582 | IWL_CMD(MANAGEMENT_ATIM); | |
1583 | IWL_CMD(MANAGEMENT_DISASSOC); | |
1584 | IWL_CMD(MANAGEMENT_AUTH); | |
1585 | IWL_CMD(MANAGEMENT_DEAUTH); | |
1586 | IWL_CMD(MANAGEMENT_ACTION); | |
1587 | default: | |
1588 | return "UNKNOWN"; | |
1589 | ||
1590 | } | |
1591 | } | |
1592 | ||
1593 | const char *iwl_legacy_get_ctrl_string(int cmd) | |
1594 | { | |
1595 | switch (cmd) { | |
1596 | IWL_CMD(CONTROL_BACK_REQ); | |
1597 | IWL_CMD(CONTROL_BACK); | |
1598 | IWL_CMD(CONTROL_PSPOLL); | |
1599 | IWL_CMD(CONTROL_RTS); | |
1600 | IWL_CMD(CONTROL_CTS); | |
1601 | IWL_CMD(CONTROL_ACK); | |
1602 | IWL_CMD(CONTROL_CFEND); | |
1603 | IWL_CMD(CONTROL_CFENDACK); | |
1604 | default: | |
1605 | return "UNKNOWN"; | |
1606 | ||
1607 | } | |
1608 | } | |
1609 | ||
1610 | void iwl_legacy_clear_traffic_stats(struct iwl_priv *priv) | |
1611 | { | |
1612 | memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); | |
1613 | memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); | |
1614 | } | |
1615 | ||
1616 | /* | |
1617 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS defined, | |
1618 | * iwl_legacy_update_stats function will | |
1619 | * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass | |
1620 | * Use debugFs to display the rx/rx_statistics | |
1621 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS not being defined, then no MGMT and CTRL | |
1622 | * information will be recorded, but DATA pkt still will be recorded | |
1623 | * for the reason of iwl_led.c need to control the led blinking based on | |
1624 | * number of tx and rx data. | |
1625 | * | |
1626 | */ | |
1627 | void | |
1628 | iwl_legacy_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) | |
1629 | { | |
1630 | struct traffic_stats *stats; | |
1631 | ||
1632 | if (is_tx) | |
1633 | stats = &priv->tx_stats; | |
1634 | else | |
1635 | stats = &priv->rx_stats; | |
1636 | ||
1637 | if (ieee80211_is_mgmt(fc)) { | |
1638 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1639 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
1640 | stats->mgmt[MANAGEMENT_ASSOC_REQ]++; | |
1641 | break; | |
1642 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): | |
1643 | stats->mgmt[MANAGEMENT_ASSOC_RESP]++; | |
1644 | break; | |
1645 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
1646 | stats->mgmt[MANAGEMENT_REASSOC_REQ]++; | |
1647 | break; | |
1648 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): | |
1649 | stats->mgmt[MANAGEMENT_REASSOC_RESP]++; | |
1650 | break; | |
1651 | case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): | |
1652 | stats->mgmt[MANAGEMENT_PROBE_REQ]++; | |
1653 | break; | |
1654 | case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): | |
1655 | stats->mgmt[MANAGEMENT_PROBE_RESP]++; | |
1656 | break; | |
1657 | case cpu_to_le16(IEEE80211_STYPE_BEACON): | |
1658 | stats->mgmt[MANAGEMENT_BEACON]++; | |
1659 | break; | |
1660 | case cpu_to_le16(IEEE80211_STYPE_ATIM): | |
1661 | stats->mgmt[MANAGEMENT_ATIM]++; | |
1662 | break; | |
1663 | case cpu_to_le16(IEEE80211_STYPE_DISASSOC): | |
1664 | stats->mgmt[MANAGEMENT_DISASSOC]++; | |
1665 | break; | |
1666 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
1667 | stats->mgmt[MANAGEMENT_AUTH]++; | |
1668 | break; | |
1669 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
1670 | stats->mgmt[MANAGEMENT_DEAUTH]++; | |
1671 | break; | |
1672 | case cpu_to_le16(IEEE80211_STYPE_ACTION): | |
1673 | stats->mgmt[MANAGEMENT_ACTION]++; | |
1674 | break; | |
1675 | } | |
1676 | } else if (ieee80211_is_ctl(fc)) { | |
1677 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1678 | case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): | |
1679 | stats->ctrl[CONTROL_BACK_REQ]++; | |
1680 | break; | |
1681 | case cpu_to_le16(IEEE80211_STYPE_BACK): | |
1682 | stats->ctrl[CONTROL_BACK]++; | |
1683 | break; | |
1684 | case cpu_to_le16(IEEE80211_STYPE_PSPOLL): | |
1685 | stats->ctrl[CONTROL_PSPOLL]++; | |
1686 | break; | |
1687 | case cpu_to_le16(IEEE80211_STYPE_RTS): | |
1688 | stats->ctrl[CONTROL_RTS]++; | |
1689 | break; | |
1690 | case cpu_to_le16(IEEE80211_STYPE_CTS): | |
1691 | stats->ctrl[CONTROL_CTS]++; | |
1692 | break; | |
1693 | case cpu_to_le16(IEEE80211_STYPE_ACK): | |
1694 | stats->ctrl[CONTROL_ACK]++; | |
1695 | break; | |
1696 | case cpu_to_le16(IEEE80211_STYPE_CFEND): | |
1697 | stats->ctrl[CONTROL_CFEND]++; | |
1698 | break; | |
1699 | case cpu_to_le16(IEEE80211_STYPE_CFENDACK): | |
1700 | stats->ctrl[CONTROL_CFENDACK]++; | |
1701 | break; | |
1702 | } | |
1703 | } else { | |
1704 | /* data */ | |
1705 | stats->data_cnt++; | |
1706 | stats->data_bytes += len; | |
1707 | } | |
1708 | } | |
1709 | EXPORT_SYMBOL(iwl_legacy_update_stats); | |
1710 | #endif | |
1711 | ||
1712 | static void _iwl_legacy_force_rf_reset(struct iwl_priv *priv) | |
1713 | { | |
1714 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1715 | return; | |
1716 | ||
1717 | if (!iwl_legacy_is_any_associated(priv)) { | |
1718 | IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); | |
1719 | return; | |
1720 | } | |
1721 | /* | |
1722 | * There is no easy and better way to force reset the radio, | |
1723 | * the only known method is switching channel which will force to | |
1724 | * reset and tune the radio. | |
1725 | * Use internal short scan (single channel) operation to should | |
1726 | * achieve this objective. | |
1727 | * Driver should reset the radio when number of consecutive missed | |
1728 | * beacon, or any other uCode error condition detected. | |
1729 | */ | |
1730 | IWL_DEBUG_INFO(priv, "perform radio reset.\n"); | |
1731 | iwl_legacy_internal_short_hw_scan(priv); | |
1732 | } | |
1733 | ||
1734 | ||
1735 | int iwl_legacy_force_reset(struct iwl_priv *priv, int mode, bool external) | |
1736 | { | |
1737 | struct iwl_force_reset *force_reset; | |
1738 | ||
1739 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1740 | return -EINVAL; | |
1741 | ||
1742 | if (mode >= IWL_MAX_FORCE_RESET) { | |
1743 | IWL_DEBUG_INFO(priv, "invalid reset request.\n"); | |
1744 | return -EINVAL; | |
1745 | } | |
1746 | force_reset = &priv->force_reset[mode]; | |
1747 | force_reset->reset_request_count++; | |
1748 | if (!external) { | |
1749 | if (force_reset->last_force_reset_jiffies && | |
1750 | time_after(force_reset->last_force_reset_jiffies + | |
1751 | force_reset->reset_duration, jiffies)) { | |
1752 | IWL_DEBUG_INFO(priv, "force reset rejected\n"); | |
1753 | force_reset->reset_reject_count++; | |
1754 | return -EAGAIN; | |
1755 | } | |
1756 | } | |
1757 | force_reset->reset_success_count++; | |
1758 | force_reset->last_force_reset_jiffies = jiffies; | |
1759 | IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); | |
1760 | switch (mode) { | |
1761 | case IWL_RF_RESET: | |
1762 | _iwl_legacy_force_rf_reset(priv); | |
1763 | break; | |
1764 | case IWL_FW_RESET: | |
1765 | /* | |
1766 | * if the request is from external(ex: debugfs), | |
1767 | * then always perform the request in regardless the module | |
1768 | * parameter setting | |
1769 | * if the request is from internal (uCode error or driver | |
1770 | * detect failure), then fw_restart module parameter | |
1771 | * need to be check before performing firmware reload | |
1772 | */ | |
1773 | if (!external && !priv->cfg->mod_params->restart_fw) { | |
1774 | IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " | |
1775 | "module parameter setting\n"); | |
1776 | break; | |
1777 | } | |
1778 | IWL_ERR(priv, "On demand firmware reload\n"); | |
1779 | /* Set the FW error flag -- cleared on iwl_down */ | |
1780 | set_bit(STATUS_FW_ERROR, &priv->status); | |
1781 | wake_up_interruptible(&priv->wait_command_queue); | |
1782 | /* | |
1783 | * Keep the restart process from trying to send host | |
1784 | * commands by clearing the INIT status bit | |
1785 | */ | |
1786 | clear_bit(STATUS_READY, &priv->status); | |
1787 | queue_work(priv->workqueue, &priv->restart); | |
1788 | break; | |
1789 | } | |
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | int | |
1794 | iwl_legacy_mac_change_interface(struct ieee80211_hw *hw, | |
1795 | struct ieee80211_vif *vif, | |
1796 | enum nl80211_iftype newtype, bool newp2p) | |
1797 | { | |
1798 | struct iwl_priv *priv = hw->priv; | |
1799 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1800 | struct iwl_rxon_context *tmp; | |
1801 | u32 interface_modes; | |
1802 | int err; | |
1803 | ||
1804 | newtype = ieee80211_iftype_p2p(newtype, newp2p); | |
1805 | ||
1806 | mutex_lock(&priv->mutex); | |
1807 | ||
1808 | interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; | |
1809 | ||
1810 | if (!(interface_modes & BIT(newtype))) { | |
1811 | err = -EBUSY; | |
1812 | goto out; | |
1813 | } | |
1814 | ||
1815 | if (ctx->exclusive_interface_modes & BIT(newtype)) { | |
1816 | for_each_context(priv, tmp) { | |
1817 | if (ctx == tmp) | |
1818 | continue; | |
1819 | ||
1820 | if (!tmp->vif) | |
1821 | continue; | |
1822 | ||
1823 | /* | |
1824 | * The current mode switch would be exclusive, but | |
1825 | * another context is active ... refuse the switch. | |
1826 | */ | |
1827 | err = -EBUSY; | |
1828 | goto out; | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | /* success */ | |
1833 | iwl_legacy_teardown_interface(priv, vif, true); | |
1834 | vif->type = newtype; | |
1835 | err = iwl_legacy_setup_interface(priv, ctx); | |
1836 | WARN_ON(err); | |
1837 | /* | |
1838 | * We've switched internally, but submitting to the | |
1839 | * device may have failed for some reason. Mask this | |
1840 | * error, because otherwise mac80211 will not switch | |
1841 | * (and set the interface type back) and we'll be | |
1842 | * out of sync with it. | |
1843 | */ | |
1844 | err = 0; | |
1845 | ||
1846 | out: | |
1847 | mutex_unlock(&priv->mutex); | |
1848 | return err; | |
1849 | } | |
1850 | EXPORT_SYMBOL(iwl_legacy_mac_change_interface); | |
1851 | ||
1852 | /* | |
1853 | * On every watchdog tick we check (latest) time stamp. If it does not | |
1854 | * change during timeout period and queue is not empty we reset firmware. | |
1855 | */ | |
1856 | static int iwl_legacy_check_stuck_queue(struct iwl_priv *priv, int cnt) | |
1857 | { | |
1858 | struct iwl_tx_queue *txq = &priv->txq[cnt]; | |
1859 | struct iwl_queue *q = &txq->q; | |
1860 | unsigned long timeout; | |
1861 | int ret; | |
1862 | ||
1863 | if (q->read_ptr == q->write_ptr) { | |
1864 | txq->time_stamp = jiffies; | |
1865 | return 0; | |
1866 | } | |
1867 | ||
1868 | timeout = txq->time_stamp + | |
1869 | msecs_to_jiffies(priv->cfg->base_params->wd_timeout); | |
1870 | ||
1871 | if (time_after(jiffies, timeout)) { | |
1872 | IWL_ERR(priv, "Queue %d stuck for %u ms.\n", | |
1873 | q->id, priv->cfg->base_params->wd_timeout); | |
1874 | ret = iwl_legacy_force_reset(priv, IWL_FW_RESET, false); | |
1875 | return (ret == -EAGAIN) ? 0 : 1; | |
1876 | } | |
1877 | ||
1878 | return 0; | |
1879 | } | |
1880 | ||
1881 | /* | |
1882 | * Making watchdog tick be a quarter of timeout assure we will | |
1883 | * discover the queue hung between timeout and 1.25*timeout | |
1884 | */ | |
1885 | #define IWL_WD_TICK(timeout) ((timeout) / 4) | |
1886 | ||
1887 | /* | |
1888 | * Watchdog timer callback, we check each tx queue for stuck, if if hung | |
1889 | * we reset the firmware. If everything is fine just rearm the timer. | |
1890 | */ | |
1891 | void iwl_legacy_bg_watchdog(unsigned long data) | |
1892 | { | |
1893 | struct iwl_priv *priv = (struct iwl_priv *)data; | |
1894 | int cnt; | |
1895 | unsigned long timeout; | |
1896 | ||
1897 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1898 | return; | |
1899 | ||
1900 | timeout = priv->cfg->base_params->wd_timeout; | |
1901 | if (timeout == 0) | |
1902 | return; | |
1903 | ||
1904 | /* monitor and check for stuck cmd queue */ | |
1905 | if (iwl_legacy_check_stuck_queue(priv, priv->cmd_queue)) | |
1906 | return; | |
1907 | ||
1908 | /* monitor and check for other stuck queues */ | |
1909 | if (iwl_legacy_is_any_associated(priv)) { | |
1910 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { | |
1911 | /* skip as we already checked the command queue */ | |
1912 | if (cnt == priv->cmd_queue) | |
1913 | continue; | |
1914 | if (iwl_legacy_check_stuck_queue(priv, cnt)) | |
1915 | return; | |
1916 | } | |
1917 | } | |
1918 | ||
1919 | mod_timer(&priv->watchdog, jiffies + | |
1920 | msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
1921 | } | |
1922 | EXPORT_SYMBOL(iwl_legacy_bg_watchdog); | |
1923 | ||
1924 | void iwl_legacy_setup_watchdog(struct iwl_priv *priv) | |
1925 | { | |
1926 | unsigned int timeout = priv->cfg->base_params->wd_timeout; | |
1927 | ||
1928 | if (timeout) | |
1929 | mod_timer(&priv->watchdog, | |
1930 | jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
1931 | else | |
1932 | del_timer(&priv->watchdog); | |
1933 | } | |
1934 | EXPORT_SYMBOL(iwl_legacy_setup_watchdog); | |
1935 | ||
1936 | /* | |
1937 | * extended beacon time format | |
1938 | * time in usec will be changed into a 32-bit value in extended:internal format | |
1939 | * the extended part is the beacon counts | |
1940 | * the internal part is the time in usec within one beacon interval | |
1941 | */ | |
1942 | u32 | |
1943 | iwl_legacy_usecs_to_beacons(struct iwl_priv *priv, | |
1944 | u32 usec, u32 beacon_interval) | |
1945 | { | |
1946 | u32 quot; | |
1947 | u32 rem; | |
1948 | u32 interval = beacon_interval * TIME_UNIT; | |
1949 | ||
1950 | if (!interval || !usec) | |
1951 | return 0; | |
1952 | ||
1953 | quot = (usec / interval) & | |
1954 | (iwl_legacy_beacon_time_mask_high(priv, | |
1955 | priv->hw_params.beacon_time_tsf_bits) >> | |
1956 | priv->hw_params.beacon_time_tsf_bits); | |
1957 | rem = (usec % interval) & iwl_legacy_beacon_time_mask_low(priv, | |
1958 | priv->hw_params.beacon_time_tsf_bits); | |
1959 | ||
1960 | return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; | |
1961 | } | |
1962 | EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons); | |
1963 | ||
1964 | /* base is usually what we get from ucode with each received frame, | |
1965 | * the same as HW timer counter counting down | |
1966 | */ | |
1967 | __le32 iwl_legacy_add_beacon_time(struct iwl_priv *priv, u32 base, | |
1968 | u32 addon, u32 beacon_interval) | |
1969 | { | |
1970 | u32 base_low = base & iwl_legacy_beacon_time_mask_low(priv, | |
1971 | priv->hw_params.beacon_time_tsf_bits); | |
1972 | u32 addon_low = addon & iwl_legacy_beacon_time_mask_low(priv, | |
1973 | priv->hw_params.beacon_time_tsf_bits); | |
1974 | u32 interval = beacon_interval * TIME_UNIT; | |
1975 | u32 res = (base & iwl_legacy_beacon_time_mask_high(priv, | |
1976 | priv->hw_params.beacon_time_tsf_bits)) + | |
1977 | (addon & iwl_legacy_beacon_time_mask_high(priv, | |
1978 | priv->hw_params.beacon_time_tsf_bits)); | |
1979 | ||
1980 | if (base_low > addon_low) | |
1981 | res += base_low - addon_low; | |
1982 | else if (base_low < addon_low) { | |
1983 | res += interval + base_low - addon_low; | |
1984 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
1985 | } else | |
1986 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
1987 | ||
1988 | return cpu_to_le32(res); | |
1989 | } | |
1990 | EXPORT_SYMBOL(iwl_legacy_add_beacon_time); | |
1991 | ||
1992 | #ifdef CONFIG_PM | |
1993 | ||
1994 | int iwl_legacy_pci_suspend(struct device *device) | |
1995 | { | |
1996 | struct pci_dev *pdev = to_pci_dev(device); | |
1997 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
1998 | ||
1999 | /* | |
2000 | * This function is called when system goes into suspend state | |
2001 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function | |
2002 | * first but since iwl_mac_stop() has no knowledge of who the caller is, | |
2003 | * it will not call apm_ops.stop() to stop the DMA operation. | |
2004 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
2005 | */ | |
2006 | iwl_legacy_apm_stop(priv); | |
2007 | ||
2008 | return 0; | |
2009 | } | |
2010 | EXPORT_SYMBOL(iwl_legacy_pci_suspend); | |
2011 | ||
2012 | int iwl_legacy_pci_resume(struct device *device) | |
2013 | { | |
2014 | struct pci_dev *pdev = to_pci_dev(device); | |
2015 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
2016 | bool hw_rfkill = false; | |
2017 | ||
2018 | /* | |
2019 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
2020 | * PCI Tx retries from interfering with C3 CPU state. | |
2021 | */ | |
2022 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
2023 | ||
2024 | iwl_legacy_enable_interrupts(priv); | |
2025 | ||
2026 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & | |
2027 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) | |
2028 | hw_rfkill = true; | |
2029 | ||
2030 | if (hw_rfkill) | |
2031 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
2032 | else | |
2033 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
2034 | ||
2035 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); | |
2036 | ||
2037 | return 0; | |
2038 | } | |
2039 | EXPORT_SYMBOL(iwl_legacy_pci_resume); | |
2040 | ||
2041 | const struct dev_pm_ops iwl_legacy_pm_ops = { | |
2042 | .suspend = iwl_legacy_pci_suspend, | |
2043 | .resume = iwl_legacy_pci_resume, | |
2044 | .freeze = iwl_legacy_pci_suspend, | |
2045 | .thaw = iwl_legacy_pci_resume, | |
2046 | .poweroff = iwl_legacy_pci_suspend, | |
2047 | .restore = iwl_legacy_pci_resume, | |
2048 | }; | |
2049 | EXPORT_SYMBOL(iwl_legacy_pm_ops); | |
2050 | ||
2051 | #endif /* CONFIG_PM */ | |
2052 | ||
2053 | static void | |
2054 | iwl_legacy_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
2055 | { | |
2056 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
2057 | return; | |
2058 | ||
2059 | if (!ctx->is_active) | |
2060 | return; | |
2061 | ||
2062 | ctx->qos_data.def_qos_parm.qos_flags = 0; | |
2063 | ||
2064 | if (ctx->qos_data.qos_active) | |
2065 | ctx->qos_data.def_qos_parm.qos_flags |= | |
2066 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
2067 | ||
2068 | if (ctx->ht.enabled) | |
2069 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
2070 | ||
2071 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", | |
2072 | ctx->qos_data.qos_active, | |
2073 | ctx->qos_data.def_qos_parm.qos_flags); | |
2074 | ||
2075 | iwl_legacy_send_cmd_pdu_async(priv, ctx->qos_cmd, | |
2076 | sizeof(struct iwl_qosparam_cmd), | |
2077 | &ctx->qos_data.def_qos_parm, NULL); | |
2078 | } | |
2079 | ||
2080 | /** | |
2081 | * iwl_legacy_mac_config - mac80211 config callback | |
2082 | */ | |
2083 | int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed) | |
2084 | { | |
2085 | struct iwl_priv *priv = hw->priv; | |
2086 | const struct iwl_channel_info *ch_info; | |
2087 | struct ieee80211_conf *conf = &hw->conf; | |
2088 | struct ieee80211_channel *channel = conf->channel; | |
2089 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
2090 | struct iwl_rxon_context *ctx; | |
2091 | unsigned long flags = 0; | |
2092 | int ret = 0; | |
2093 | u16 ch; | |
2094 | int scan_active = 0; | |
2095 | bool ht_changed[NUM_IWL_RXON_CTX] = {}; | |
2096 | ||
2097 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2098 | return -EOPNOTSUPP; | |
2099 | ||
2100 | mutex_lock(&priv->mutex); | |
2101 | ||
2102 | IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", | |
2103 | channel->hw_value, changed); | |
2104 | ||
2105 | if (unlikely(!priv->cfg->mod_params->disable_hw_scan && | |
2106 | test_bit(STATUS_SCANNING, &priv->status))) { | |
2107 | scan_active = 1; | |
2108 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); | |
2109 | } | |
2110 | ||
2111 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | | |
2112 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2113 | /* mac80211 uses static for non-HT which is what we want */ | |
2114 | priv->current_ht_config.smps = conf->smps_mode; | |
2115 | ||
2116 | /* | |
2117 | * Recalculate chain counts. | |
2118 | * | |
2119 | * If monitor mode is enabled then mac80211 will | |
2120 | * set up the SM PS mode to OFF if an HT channel is | |
2121 | * configured. | |
2122 | */ | |
2123 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
2124 | for_each_context(priv, ctx) | |
2125 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
2126 | } | |
2127 | ||
2128 | /* during scanning mac80211 will delay channel setting until | |
2129 | * scan finish with changed = 0 | |
2130 | */ | |
2131 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2132 | if (scan_active) | |
2133 | goto set_ch_out; | |
2134 | ||
2135 | ch = channel->hw_value; | |
2136 | ch_info = iwl_legacy_get_channel_info(priv, channel->band, ch); | |
2137 | if (!iwl_legacy_is_channel_valid(ch_info)) { | |
2138 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
2139 | ret = -EINVAL; | |
2140 | goto set_ch_out; | |
2141 | } | |
2142 | ||
2143 | spin_lock_irqsave(&priv->lock, flags); | |
2144 | ||
2145 | for_each_context(priv, ctx) { | |
2146 | /* Configure HT40 channels */ | |
2147 | if (ctx->ht.enabled != conf_is_ht(conf)) { | |
2148 | ctx->ht.enabled = conf_is_ht(conf); | |
2149 | ht_changed[ctx->ctxid] = true; | |
2150 | } | |
2151 | if (ctx->ht.enabled) { | |
2152 | if (conf_is_ht40_minus(conf)) { | |
2153 | ctx->ht.extension_chan_offset = | |
2154 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2155 | ctx->ht.is_40mhz = true; | |
2156 | } else if (conf_is_ht40_plus(conf)) { | |
2157 | ctx->ht.extension_chan_offset = | |
2158 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2159 | ctx->ht.is_40mhz = true; | |
2160 | } else { | |
2161 | ctx->ht.extension_chan_offset = | |
2162 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
2163 | ctx->ht.is_40mhz = false; | |
2164 | } | |
2165 | } else | |
2166 | ctx->ht.is_40mhz = false; | |
2167 | ||
2168 | /* | |
2169 | * Default to no protection. Protection mode will | |
2170 | * later be set from BSS config in iwl_ht_conf | |
2171 | */ | |
2172 | ctx->ht.protection = | |
2173 | IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
2174 | ||
2175 | /* if we are switching from ht to 2.4 clear flags | |
2176 | * from any ht related info since 2.4 does not | |
2177 | * support ht */ | |
2178 | if ((le16_to_cpu(ctx->staging.channel) != ch)) | |
2179 | ctx->staging.flags = 0; | |
2180 | ||
2181 | iwl_legacy_set_rxon_channel(priv, channel, ctx); | |
2182 | iwl_legacy_set_rxon_ht(priv, ht_conf); | |
2183 | ||
2184 | iwl_legacy_set_flags_for_band(priv, ctx, channel->band, | |
2185 | ctx->vif); | |
2186 | } | |
2187 | ||
2188 | spin_unlock_irqrestore(&priv->lock, flags); | |
2189 | ||
2190 | if (priv->cfg->ops->legacy->update_bcast_stations) | |
2191 | ret = | |
2192 | priv->cfg->ops->legacy->update_bcast_stations(priv); | |
2193 | ||
2194 | set_ch_out: | |
2195 | /* The list of supported rates and rate mask can be different | |
2196 | * for each band; since the band may have changed, reset | |
2197 | * the rate mask to what mac80211 lists */ | |
2198 | iwl_legacy_set_rate(priv); | |
2199 | } | |
2200 | ||
2201 | if (changed & (IEEE80211_CONF_CHANGE_PS | | |
2202 | IEEE80211_CONF_CHANGE_IDLE)) { | |
2203 | ret = iwl_legacy_power_update_mode(priv, false); | |
2204 | if (ret) | |
2205 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); | |
2206 | } | |
2207 | ||
2208 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
2209 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
2210 | priv->tx_power_user_lmt, conf->power_level); | |
2211 | ||
2212 | iwl_legacy_set_tx_power(priv, conf->power_level, false); | |
2213 | } | |
2214 | ||
2215 | if (!iwl_legacy_is_ready(priv)) { | |
2216 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2217 | goto out; | |
2218 | } | |
2219 | ||
2220 | if (scan_active) | |
2221 | goto out; | |
2222 | ||
2223 | for_each_context(priv, ctx) { | |
2224 | if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging))) | |
2225 | iwl_legacy_commit_rxon(priv, ctx); | |
2226 | else | |
2227 | IWL_DEBUG_INFO(priv, | |
2228 | "Not re-sending same RXON configuration.\n"); | |
2229 | if (ht_changed[ctx->ctxid]) | |
2230 | iwl_legacy_update_qos(priv, ctx); | |
2231 | } | |
2232 | ||
2233 | out: | |
2234 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2235 | mutex_unlock(&priv->mutex); | |
2236 | return ret; | |
2237 | } | |
2238 | EXPORT_SYMBOL(iwl_legacy_mac_config); | |
2239 | ||
2240 | void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw) | |
2241 | { | |
2242 | struct iwl_priv *priv = hw->priv; | |
2243 | unsigned long flags; | |
2244 | /* IBSS can only be the IWL_RXON_CTX_BSS context */ | |
2245 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
2246 | ||
2247 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2248 | return; | |
2249 | ||
2250 | mutex_lock(&priv->mutex); | |
2251 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
2252 | ||
2253 | spin_lock_irqsave(&priv->lock, flags); | |
2254 | memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); | |
2255 | spin_unlock_irqrestore(&priv->lock, flags); | |
2256 | ||
2257 | spin_lock_irqsave(&priv->lock, flags); | |
2258 | ||
2259 | /* new association get rid of ibss beacon skb */ | |
2260 | if (priv->beacon_skb) | |
2261 | dev_kfree_skb(priv->beacon_skb); | |
2262 | ||
2263 | priv->beacon_skb = NULL; | |
2264 | ||
2265 | priv->timestamp = 0; | |
2266 | ||
2267 | spin_unlock_irqrestore(&priv->lock, flags); | |
2268 | ||
2269 | iwl_legacy_scan_cancel_timeout(priv, 100); | |
2270 | if (!iwl_legacy_is_ready_rf(priv)) { | |
2271 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2272 | mutex_unlock(&priv->mutex); | |
2273 | return; | |
2274 | } | |
2275 | ||
2276 | /* we are restarting association process | |
2277 | * clear RXON_FILTER_ASSOC_MSK bit | |
2278 | */ | |
2279 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2280 | iwl_legacy_commit_rxon(priv, ctx); | |
2281 | ||
2282 | iwl_legacy_set_rate(priv); | |
2283 | ||
2284 | mutex_unlock(&priv->mutex); | |
2285 | ||
2286 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2287 | } | |
2288 | EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf); | |
2289 | ||
2290 | static void iwl_legacy_ht_conf(struct iwl_priv *priv, | |
2291 | struct ieee80211_vif *vif) | |
2292 | { | |
2293 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
2294 | struct ieee80211_sta *sta; | |
2295 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; | |
2296 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2297 | ||
2298 | IWL_DEBUG_ASSOC(priv, "enter:\n"); | |
2299 | ||
2300 | if (!ctx->ht.enabled) | |
2301 | return; | |
2302 | ||
2303 | ctx->ht.protection = | |
2304 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; | |
2305 | ctx->ht.non_gf_sta_present = | |
2306 | !!(bss_conf->ht_operation_mode & | |
2307 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
2308 | ||
2309 | ht_conf->single_chain_sufficient = false; | |
2310 | ||
2311 | switch (vif->type) { | |
2312 | case NL80211_IFTYPE_STATION: | |
2313 | rcu_read_lock(); | |
2314 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
2315 | if (sta) { | |
2316 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; | |
2317 | int maxstreams; | |
2318 | ||
2319 | maxstreams = (ht_cap->mcs.tx_params & | |
2320 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
2321 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
2322 | maxstreams += 1; | |
2323 | ||
2324 | if ((ht_cap->mcs.rx_mask[1] == 0) && | |
2325 | (ht_cap->mcs.rx_mask[2] == 0)) | |
2326 | ht_conf->single_chain_sufficient = true; | |
2327 | if (maxstreams <= 1) | |
2328 | ht_conf->single_chain_sufficient = true; | |
2329 | } else { | |
2330 | /* | |
2331 | * If at all, this can only happen through a race | |
2332 | * when the AP disconnects us while we're still | |
2333 | * setting up the connection, in that case mac80211 | |
2334 | * will soon tell us about that. | |
2335 | */ | |
2336 | ht_conf->single_chain_sufficient = true; | |
2337 | } | |
2338 | rcu_read_unlock(); | |
2339 | break; | |
2340 | case NL80211_IFTYPE_ADHOC: | |
2341 | ht_conf->single_chain_sufficient = true; | |
2342 | break; | |
2343 | default: | |
2344 | break; | |
2345 | } | |
2346 | ||
2347 | IWL_DEBUG_ASSOC(priv, "leave\n"); | |
2348 | } | |
2349 | ||
2350 | static inline void iwl_legacy_set_no_assoc(struct iwl_priv *priv, | |
2351 | struct ieee80211_vif *vif) | |
2352 | { | |
2353 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2354 | ||
2355 | /* | |
2356 | * inform the ucode that there is no longer an | |
2357 | * association and that no more packets should be | |
2358 | * sent | |
2359 | */ | |
2360 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2361 | ctx->staging.assoc_id = 0; | |
2362 | iwl_legacy_commit_rxon(priv, ctx); | |
2363 | } | |
2364 | ||
2365 | static void iwl_legacy_beacon_update(struct ieee80211_hw *hw, | |
2366 | struct ieee80211_vif *vif) | |
2367 | { | |
2368 | struct iwl_priv *priv = hw->priv; | |
2369 | unsigned long flags; | |
2370 | __le64 timestamp; | |
2371 | struct sk_buff *skb = ieee80211_beacon_get(hw, vif); | |
2372 | ||
2373 | if (!skb) | |
2374 | return; | |
2375 | ||
2376 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
2377 | ||
2378 | lockdep_assert_held(&priv->mutex); | |
2379 | ||
2380 | if (!priv->beacon_ctx) { | |
2381 | IWL_ERR(priv, "update beacon but no beacon context!\n"); | |
2382 | dev_kfree_skb(skb); | |
2383 | return; | |
2384 | } | |
2385 | ||
2386 | spin_lock_irqsave(&priv->lock, flags); | |
2387 | ||
2388 | if (priv->beacon_skb) | |
2389 | dev_kfree_skb(priv->beacon_skb); | |
2390 | ||
2391 | priv->beacon_skb = skb; | |
2392 | ||
2393 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; | |
2394 | priv->timestamp = le64_to_cpu(timestamp); | |
2395 | ||
2396 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2397 | spin_unlock_irqrestore(&priv->lock, flags); | |
2398 | ||
2399 | if (!iwl_legacy_is_ready_rf(priv)) { | |
2400 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
2401 | return; | |
2402 | } | |
2403 | ||
2404 | priv->cfg->ops->legacy->post_associate(priv); | |
2405 | } | |
2406 | ||
2407 | void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, | |
2408 | struct ieee80211_vif *vif, | |
2409 | struct ieee80211_bss_conf *bss_conf, | |
2410 | u32 changes) | |
2411 | { | |
2412 | struct iwl_priv *priv = hw->priv; | |
2413 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2414 | int ret; | |
2415 | ||
2416 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2417 | return; | |
2418 | ||
2419 | IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); | |
2420 | ||
2421 | if (!iwl_legacy_is_alive(priv)) | |
2422 | return; | |
2423 | ||
2424 | mutex_lock(&priv->mutex); | |
2425 | ||
2426 | if (changes & BSS_CHANGED_QOS) { | |
2427 | unsigned long flags; | |
2428 | ||
2429 | spin_lock_irqsave(&priv->lock, flags); | |
2430 | ctx->qos_data.qos_active = bss_conf->qos; | |
2431 | iwl_legacy_update_qos(priv, ctx); | |
2432 | spin_unlock_irqrestore(&priv->lock, flags); | |
2433 | } | |
2434 | ||
2435 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
2436 | /* | |
2437 | * the add_interface code must make sure we only ever | |
2438 | * have a single interface that could be beaconing at | |
2439 | * any time. | |
2440 | */ | |
2441 | if (vif->bss_conf.enable_beacon) | |
2442 | priv->beacon_ctx = ctx; | |
2443 | else | |
2444 | priv->beacon_ctx = NULL; | |
2445 | } | |
2446 | ||
2447 | if (changes & BSS_CHANGED_BSSID) { | |
2448 | IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); | |
2449 | ||
2450 | /* | |
2451 | * If there is currently a HW scan going on in the | |
2452 | * background then we need to cancel it else the RXON | |
2453 | * below/in post_associate will fail. | |
2454 | */ | |
2455 | if (iwl_legacy_scan_cancel_timeout(priv, 100)) { | |
2456 | IWL_WARN(priv, | |
2457 | "Aborted scan still in progress after 100ms\n"); | |
2458 | IWL_DEBUG_MAC80211(priv, | |
2459 | "leaving - scan abort failed.\n"); | |
2460 | mutex_unlock(&priv->mutex); | |
2461 | return; | |
2462 | } | |
2463 | ||
2464 | /* mac80211 only sets assoc when in STATION mode */ | |
2465 | if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { | |
2466 | memcpy(ctx->staging.bssid_addr, | |
2467 | bss_conf->bssid, ETH_ALEN); | |
2468 | ||
2469 | /* currently needed in a few places */ | |
2470 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
2471 | } else { | |
2472 | ctx->staging.filter_flags &= | |
2473 | ~RXON_FILTER_ASSOC_MSK; | |
2474 | } | |
2475 | ||
2476 | } | |
2477 | ||
2478 | /* | |
2479 | * This needs to be after setting the BSSID in case | |
2480 | * mac80211 decides to do both changes at once because | |
2481 | * it will invoke post_associate. | |
2482 | */ | |
2483 | if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) | |
2484 | iwl_legacy_beacon_update(hw, vif); | |
2485 | ||
2486 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { | |
2487 | IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", | |
2488 | bss_conf->use_short_preamble); | |
2489 | if (bss_conf->use_short_preamble) | |
2490 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
2491 | else | |
2492 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
2493 | } | |
2494 | ||
2495 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { | |
2496 | IWL_DEBUG_MAC80211(priv, | |
2497 | "ERP_CTS %d\n", bss_conf->use_cts_prot); | |
2498 | if (bss_conf->use_cts_prot && | |
2499 | (priv->band != IEEE80211_BAND_5GHZ)) | |
2500 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
2501 | else | |
2502 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
2503 | if (bss_conf->use_cts_prot) | |
2504 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
2505 | else | |
2506 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; | |
2507 | } | |
2508 | ||
2509 | if (changes & BSS_CHANGED_BASIC_RATES) { | |
2510 | /* XXX use this information | |
2511 | * | |
2512 | * To do that, remove code from iwl_legacy_set_rate() and put something | |
2513 | * like this here: | |
2514 | * | |
2515 | if (A-band) | |
2516 | ctx->staging.ofdm_basic_rates = | |
2517 | bss_conf->basic_rates; | |
2518 | else | |
2519 | ctx->staging.ofdm_basic_rates = | |
2520 | bss_conf->basic_rates >> 4; | |
2521 | ctx->staging.cck_basic_rates = | |
2522 | bss_conf->basic_rates & 0xF; | |
2523 | */ | |
2524 | } | |
2525 | ||
2526 | if (changes & BSS_CHANGED_HT) { | |
2527 | iwl_legacy_ht_conf(priv, vif); | |
2528 | ||
2529 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
2530 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
2531 | } | |
2532 | ||
2533 | if (changes & BSS_CHANGED_ASSOC) { | |
2534 | IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); | |
2535 | if (bss_conf->assoc) { | |
2536 | priv->timestamp = bss_conf->timestamp; | |
2537 | ||
2538 | if (!iwl_legacy_is_rfkill(priv)) | |
2539 | priv->cfg->ops->legacy->post_associate(priv); | |
2540 | } else | |
2541 | iwl_legacy_set_no_assoc(priv, vif); | |
2542 | } | |
2543 | ||
2544 | if (changes && iwl_legacy_is_associated_ctx(ctx) && bss_conf->aid) { | |
2545 | IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", | |
2546 | changes); | |
2547 | ret = iwl_legacy_send_rxon_assoc(priv, ctx); | |
2548 | if (!ret) { | |
2549 | /* Sync active_rxon with latest change. */ | |
2550 | memcpy((void *)&ctx->active, | |
2551 | &ctx->staging, | |
2552 | sizeof(struct iwl_legacy_rxon_cmd)); | |
2553 | } | |
2554 | } | |
2555 | ||
2556 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
2557 | if (vif->bss_conf.enable_beacon) { | |
2558 | memcpy(ctx->staging.bssid_addr, | |
2559 | bss_conf->bssid, ETH_ALEN); | |
2560 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
2561 | priv->cfg->ops->legacy->config_ap(priv); | |
2562 | } else | |
2563 | iwl_legacy_set_no_assoc(priv, vif); | |
2564 | } | |
2565 | ||
2566 | if (changes & BSS_CHANGED_IBSS) { | |
2567 | ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif, | |
2568 | bss_conf->ibss_joined); | |
2569 | if (ret) | |
2570 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
2571 | bss_conf->ibss_joined ? "add" : "remove", | |
2572 | bss_conf->bssid); | |
2573 | } | |
2574 | ||
2575 | mutex_unlock(&priv->mutex); | |
2576 | ||
2577 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2578 | } | |
2579 | EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed); | |
2580 | ||
2581 | irqreturn_t iwl_legacy_isr(int irq, void *data) | |
2582 | { | |
2583 | struct iwl_priv *priv = data; | |
2584 | u32 inta, inta_mask; | |
2585 | u32 inta_fh; | |
2586 | unsigned long flags; | |
2587 | if (!priv) | |
2588 | return IRQ_NONE; | |
2589 | ||
2590 | spin_lock_irqsave(&priv->lock, flags); | |
2591 | ||
2592 | /* Disable (but don't clear!) interrupts here to avoid | |
2593 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
2594 | * If we have something to service, the tasklet will re-enable ints. | |
2595 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
2596 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ | |
2597 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
2598 | ||
2599 | /* Discover which interrupts are active/pending */ | |
2600 | inta = iwl_read32(priv, CSR_INT); | |
2601 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
2602 | ||
2603 | /* Ignore interrupt if there's nothing in NIC to service. | |
2604 | * This may be due to IRQ shared with another device, | |
2605 | * or due to sporadic interrupts thrown from our NIC. */ | |
2606 | if (!inta && !inta_fh) { | |
2607 | IWL_DEBUG_ISR(priv, | |
2608 | "Ignore interrupt, inta == 0, inta_fh == 0\n"); | |
2609 | goto none; | |
2610 | } | |
2611 | ||
2612 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { | |
2613 | /* Hardware disappeared. It might have already raised | |
2614 | * an interrupt */ | |
2615 | IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); | |
2616 | goto unplugged; | |
2617 | } | |
2618 | ||
2619 | IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
2620 | inta, inta_mask, inta_fh); | |
2621 | ||
2622 | inta &= ~CSR_INT_BIT_SCD; | |
2623 | ||
2624 | /* iwl_irq_tasklet() will service interrupts and re-enable them */ | |
2625 | if (likely(inta || inta_fh)) | |
2626 | tasklet_schedule(&priv->irq_tasklet); | |
2627 | ||
2628 | unplugged: | |
2629 | spin_unlock_irqrestore(&priv->lock, flags); | |
2630 | return IRQ_HANDLED; | |
2631 | ||
2632 | none: | |
2633 | /* re-enable interrupts here since we don't have anything to service. */ | |
2634 | /* only Re-enable if diabled by irq */ | |
2635 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) | |
2636 | iwl_legacy_enable_interrupts(priv); | |
2637 | spin_unlock_irqrestore(&priv->lock, flags); | |
2638 | return IRQ_NONE; | |
2639 | } | |
2640 | EXPORT_SYMBOL(iwl_legacy_isr); | |
2641 | ||
2642 | /* | |
2643 | * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this | |
2644 | * function. | |
2645 | */ | |
2646 | void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, | |
2647 | struct ieee80211_tx_info *info, | |
2648 | __le16 fc, __le32 *tx_flags) | |
2649 | { | |
2650 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
2651 | *tx_flags |= TX_CMD_FLG_RTS_MSK; | |
2652 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
2653 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
2654 | ||
2655 | if (!ieee80211_is_mgmt(fc)) | |
2656 | return; | |
2657 | ||
2658 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
2659 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
2660 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
2661 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
2662 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
2663 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2664 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
2665 | break; | |
2666 | } | |
2667 | } else if (info->control.rates[0].flags & | |
2668 | IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
2669 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2670 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
2671 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
2672 | } | |
2673 | } | |
2674 | EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection); |