Commit | Line | Data |
---|---|---|
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; | |
332704a5 | 163 | s8 max_tx_power = 0; |
be663ab6 WYG |
164 | |
165 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || | |
166 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
167 | IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); | |
168 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | channels = kzalloc(sizeof(struct ieee80211_channel) * | |
173 | priv->channel_count, GFP_KERNEL); | |
174 | if (!channels) | |
175 | return -ENOMEM; | |
176 | ||
177 | rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), | |
178 | GFP_KERNEL); | |
179 | if (!rates) { | |
180 | kfree(channels); | |
181 | return -ENOMEM; | |
182 | } | |
183 | ||
184 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
185 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
ef33417d | 186 | sband->channels = &channels[ARRAY_SIZE(iwlegacy_eeprom_band_1)]; |
be663ab6 WYG |
187 | /* just OFDM */ |
188 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; | |
189 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; | |
190 | ||
191 | if (priv->cfg->sku & IWL_SKU_N) | |
192 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, | |
193 | IEEE80211_BAND_5GHZ); | |
194 | ||
195 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
196 | sband->channels = channels; | |
197 | /* OFDM & CCK */ | |
198 | sband->bitrates = rates; | |
199 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY; | |
200 | ||
201 | if (priv->cfg->sku & IWL_SKU_N) | |
202 | iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap, | |
203 | IEEE80211_BAND_2GHZ); | |
204 | ||
205 | priv->ieee_channels = channels; | |
206 | priv->ieee_rates = rates; | |
207 | ||
208 | for (i = 0; i < priv->channel_count; i++) { | |
209 | ch = &priv->channel_info[i]; | |
210 | ||
211 | if (!iwl_legacy_is_channel_valid(ch)) | |
212 | continue; | |
213 | ||
214 | if (iwl_legacy_is_channel_a_band(ch)) | |
215 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
216 | else | |
217 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
218 | ||
219 | geo_ch = &sband->channels[sband->n_channels++]; | |
220 | ||
221 | geo_ch->center_freq = | |
222 | ieee80211_channel_to_frequency(ch->channel, ch->band); | |
223 | geo_ch->max_power = ch->max_power_avg; | |
224 | geo_ch->max_antenna_gain = 0xff; | |
225 | geo_ch->hw_value = ch->channel; | |
226 | ||
227 | if (iwl_legacy_is_channel_valid(ch)) { | |
228 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) | |
229 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; | |
230 | ||
231 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
232 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
233 | ||
234 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
235 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
236 | ||
237 | geo_ch->flags |= ch->ht40_extension_channel; | |
238 | ||
332704a5 SG |
239 | if (ch->max_power_avg > max_tx_power) |
240 | max_tx_power = ch->max_power_avg; | |
be663ab6 WYG |
241 | } else { |
242 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
243 | } | |
244 | ||
245 | IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", | |
246 | ch->channel, geo_ch->center_freq, | |
247 | iwl_legacy_is_channel_a_band(ch) ? "5.2" : "2.4", | |
248 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? | |
249 | "restricted" : "valid", | |
250 | geo_ch->flags); | |
251 | } | |
252 | ||
332704a5 SG |
253 | priv->tx_power_device_lmt = max_tx_power; |
254 | priv->tx_power_user_lmt = max_tx_power; | |
255 | priv->tx_power_next = max_tx_power; | |
256 | ||
be663ab6 WYG |
257 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && |
258 | priv->cfg->sku & IWL_SKU_A) { | |
259 | IWL_INFO(priv, "Incorrectly detected BG card as ABG. " | |
260 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
261 | priv->pci_dev->device, | |
262 | priv->pci_dev->subsystem_device); | |
263 | priv->cfg->sku &= ~IWL_SKU_A; | |
264 | } | |
265 | ||
266 | IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", | |
267 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, | |
268 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); | |
269 | ||
270 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
271 | ||
272 | return 0; | |
273 | } | |
274 | EXPORT_SYMBOL(iwl_legacy_init_geos); | |
275 | ||
276 | /* | |
277 | * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos | |
278 | */ | |
279 | void iwl_legacy_free_geos(struct iwl_priv *priv) | |
280 | { | |
281 | kfree(priv->ieee_channels); | |
282 | kfree(priv->ieee_rates); | |
283 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
284 | } | |
285 | EXPORT_SYMBOL(iwl_legacy_free_geos); | |
286 | ||
287 | static bool iwl_legacy_is_channel_extension(struct iwl_priv *priv, | |
288 | enum ieee80211_band band, | |
289 | u16 channel, u8 extension_chan_offset) | |
290 | { | |
291 | const struct iwl_channel_info *ch_info; | |
292 | ||
293 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); | |
294 | if (!iwl_legacy_is_channel_valid(ch_info)) | |
295 | return false; | |
296 | ||
297 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
298 | return !(ch_info->ht40_extension_channel & | |
299 | IEEE80211_CHAN_NO_HT40PLUS); | |
300 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) | |
301 | return !(ch_info->ht40_extension_channel & | |
302 | IEEE80211_CHAN_NO_HT40MINUS); | |
303 | ||
304 | return false; | |
305 | } | |
306 | ||
307 | bool iwl_legacy_is_ht40_tx_allowed(struct iwl_priv *priv, | |
308 | struct iwl_rxon_context *ctx, | |
309 | struct ieee80211_sta_ht_cap *ht_cap) | |
310 | { | |
311 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
312 | return false; | |
313 | ||
314 | /* | |
315 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
316 | * the bit will not set if it is pure 40MHz case | |
317 | */ | |
318 | if (ht_cap && !ht_cap->ht_supported) | |
319 | return false; | |
320 | ||
321 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS | |
322 | if (priv->disable_ht40) | |
323 | return false; | |
324 | #endif | |
325 | ||
326 | return iwl_legacy_is_channel_extension(priv, priv->band, | |
327 | le16_to_cpu(ctx->staging.channel), | |
328 | ctx->ht.extension_chan_offset); | |
329 | } | |
330 | EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed); | |
331 | ||
332 | static u16 iwl_legacy_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) | |
333 | { | |
334 | u16 new_val; | |
335 | u16 beacon_factor; | |
336 | ||
337 | /* | |
338 | * If mac80211 hasn't given us a beacon interval, program | |
339 | * the default into the device. | |
340 | */ | |
341 | if (!beacon_val) | |
342 | return DEFAULT_BEACON_INTERVAL; | |
343 | ||
344 | /* | |
345 | * If the beacon interval we obtained from the peer | |
346 | * is too large, we'll have to wake up more often | |
347 | * (and in IBSS case, we'll beacon too much) | |
348 | * | |
349 | * For example, if max_beacon_val is 4096, and the | |
350 | * requested beacon interval is 7000, we'll have to | |
351 | * use 3500 to be able to wake up on the beacons. | |
352 | * | |
353 | * This could badly influence beacon detection stats. | |
354 | */ | |
355 | ||
356 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
357 | new_val = beacon_val / beacon_factor; | |
358 | ||
359 | if (!new_val) | |
360 | new_val = max_beacon_val; | |
361 | ||
362 | return new_val; | |
363 | } | |
364 | ||
365 | int | |
366 | iwl_legacy_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
367 | { | |
368 | u64 tsf; | |
369 | s32 interval_tm, rem; | |
370 | struct ieee80211_conf *conf = NULL; | |
371 | u16 beacon_int; | |
372 | struct ieee80211_vif *vif = ctx->vif; | |
373 | ||
374 | conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw); | |
375 | ||
376 | lockdep_assert_held(&priv->mutex); | |
377 | ||
378 | memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); | |
379 | ||
380 | ctx->timing.timestamp = cpu_to_le64(priv->timestamp); | |
381 | ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
382 | ||
383 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; | |
384 | ||
385 | /* | |
386 | * TODO: For IBSS we need to get atim_window from mac80211, | |
387 | * for now just always use 0 | |
388 | */ | |
389 | ctx->timing.atim_window = 0; | |
390 | ||
391 | beacon_int = iwl_legacy_adjust_beacon_interval(beacon_int, | |
392 | priv->hw_params.max_beacon_itrvl * TIME_UNIT); | |
393 | ctx->timing.beacon_interval = cpu_to_le16(beacon_int); | |
394 | ||
395 | tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ | |
396 | interval_tm = beacon_int * TIME_UNIT; | |
397 | rem = do_div(tsf, interval_tm); | |
398 | ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); | |
399 | ||
400 | ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; | |
401 | ||
402 | IWL_DEBUG_ASSOC(priv, | |
403 | "beacon interval %d beacon timer %d beacon tim %d\n", | |
404 | le16_to_cpu(ctx->timing.beacon_interval), | |
405 | le32_to_cpu(ctx->timing.beacon_init_val), | |
406 | le16_to_cpu(ctx->timing.atim_window)); | |
407 | ||
408 | return iwl_legacy_send_cmd_pdu(priv, ctx->rxon_timing_cmd, | |
409 | sizeof(ctx->timing), &ctx->timing); | |
410 | } | |
411 | EXPORT_SYMBOL(iwl_legacy_send_rxon_timing); | |
412 | ||
413 | void | |
414 | iwl_legacy_set_rxon_hwcrypto(struct iwl_priv *priv, | |
415 | struct iwl_rxon_context *ctx, | |
416 | int hw_decrypt) | |
417 | { | |
418 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
419 | ||
420 | if (hw_decrypt) | |
421 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
422 | else | |
423 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
424 | ||
425 | } | |
426 | EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto); | |
427 | ||
428 | /* validate RXON structure is valid */ | |
429 | int | |
430 | iwl_legacy_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
431 | { | |
432 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
433 | bool error = false; | |
434 | ||
435 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
436 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { | |
437 | IWL_WARN(priv, "check 2.4G: wrong narrow\n"); | |
438 | error = true; | |
439 | } | |
440 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { | |
441 | IWL_WARN(priv, "check 2.4G: wrong radar\n"); | |
442 | error = true; | |
443 | } | |
444 | } else { | |
445 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { | |
446 | IWL_WARN(priv, "check 5.2G: not short slot!\n"); | |
447 | error = true; | |
448 | } | |
449 | if (rxon->flags & RXON_FLG_CCK_MSK) { | |
450 | IWL_WARN(priv, "check 5.2G: CCK!\n"); | |
451 | error = true; | |
452 | } | |
453 | } | |
454 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { | |
455 | IWL_WARN(priv, "mac/bssid mcast!\n"); | |
456 | error = true; | |
457 | } | |
458 | ||
459 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
460 | if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && | |
461 | (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { | |
462 | IWL_WARN(priv, "neither 1 nor 6 are basic\n"); | |
463 | error = true; | |
464 | } | |
465 | ||
466 | if (le16_to_cpu(rxon->assoc_id) > 2007) { | |
467 | IWL_WARN(priv, "aid > 2007\n"); | |
468 | error = true; | |
469 | } | |
470 | ||
471 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) | |
472 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { | |
473 | IWL_WARN(priv, "CCK and short slot\n"); | |
474 | error = true; | |
475 | } | |
476 | ||
477 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) | |
478 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { | |
479 | IWL_WARN(priv, "CCK and auto detect"); | |
480 | error = true; | |
481 | } | |
482 | ||
483 | if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | | |
484 | RXON_FLG_TGG_PROTECT_MSK)) == | |
485 | RXON_FLG_TGG_PROTECT_MSK) { | |
486 | IWL_WARN(priv, "TGg but no auto-detect\n"); | |
487 | error = true; | |
488 | } | |
489 | ||
490 | if (error) | |
491 | IWL_WARN(priv, "Tuning to channel %d\n", | |
492 | le16_to_cpu(rxon->channel)); | |
493 | ||
494 | if (error) { | |
495 | IWL_ERR(priv, "Invalid RXON\n"); | |
496 | return -EINVAL; | |
497 | } | |
498 | return 0; | |
499 | } | |
500 | EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd); | |
501 | ||
502 | /** | |
503 | * iwl_legacy_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed | |
504 | * @priv: staging_rxon is compared to active_rxon | |
505 | * | |
506 | * If the RXON structure is changing enough to require a new tune, | |
507 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
508 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
509 | */ | |
510 | int iwl_legacy_full_rxon_required(struct iwl_priv *priv, | |
511 | struct iwl_rxon_context *ctx) | |
512 | { | |
513 | const struct iwl_legacy_rxon_cmd *staging = &ctx->staging; | |
514 | const struct iwl_legacy_rxon_cmd *active = &ctx->active; | |
515 | ||
516 | #define CHK(cond) \ | |
517 | if ((cond)) { \ | |
518 | IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \ | |
519 | return 1; \ | |
520 | } | |
521 | ||
522 | #define CHK_NEQ(c1, c2) \ | |
523 | if ((c1) != (c2)) { \ | |
524 | IWL_DEBUG_INFO(priv, "need full RXON - " \ | |
525 | #c1 " != " #c2 " - %d != %d\n", \ | |
526 | (c1), (c2)); \ | |
527 | return 1; \ | |
528 | } | |
529 | ||
530 | /* These items are only settable from the full RXON command */ | |
531 | CHK(!iwl_legacy_is_associated_ctx(ctx)); | |
532 | CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr)); | |
533 | CHK(compare_ether_addr(staging->node_addr, active->node_addr)); | |
534 | CHK(compare_ether_addr(staging->wlap_bssid_addr, | |
535 | active->wlap_bssid_addr)); | |
536 | CHK_NEQ(staging->dev_type, active->dev_type); | |
537 | CHK_NEQ(staging->channel, active->channel); | |
538 | CHK_NEQ(staging->air_propagation, active->air_propagation); | |
539 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, | |
540 | active->ofdm_ht_single_stream_basic_rates); | |
541 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, | |
542 | active->ofdm_ht_dual_stream_basic_rates); | |
543 | CHK_NEQ(staging->assoc_id, active->assoc_id); | |
544 | ||
545 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
546 | * be updated with the RXON_ASSOC command -- however only some | |
547 | * flag transitions are allowed using RXON_ASSOC */ | |
548 | ||
549 | /* Check if we are not switching bands */ | |
550 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, | |
551 | active->flags & RXON_FLG_BAND_24G_MSK); | |
552 | ||
553 | /* Check if we are switching association toggle */ | |
554 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, | |
555 | active->filter_flags & RXON_FILTER_ASSOC_MSK); | |
556 | ||
557 | #undef CHK | |
558 | #undef CHK_NEQ | |
559 | ||
560 | return 0; | |
561 | } | |
562 | EXPORT_SYMBOL(iwl_legacy_full_rxon_required); | |
563 | ||
564 | u8 iwl_legacy_get_lowest_plcp(struct iwl_priv *priv, | |
565 | struct iwl_rxon_context *ctx) | |
566 | { | |
567 | /* | |
568 | * Assign the lowest rate -- should really get this from | |
569 | * the beacon skb from mac80211. | |
570 | */ | |
571 | if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) | |
572 | return IWL_RATE_1M_PLCP; | |
573 | else | |
574 | return IWL_RATE_6M_PLCP; | |
575 | } | |
576 | EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp); | |
577 | ||
578 | static void _iwl_legacy_set_rxon_ht(struct iwl_priv *priv, | |
579 | struct iwl_ht_config *ht_conf, | |
580 | struct iwl_rxon_context *ctx) | |
581 | { | |
582 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
583 | ||
584 | if (!ctx->ht.enabled) { | |
585 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
586 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | | |
587 | RXON_FLG_HT40_PROT_MSK | | |
588 | RXON_FLG_HT_PROT_MSK); | |
589 | return; | |
590 | } | |
591 | ||
592 | rxon->flags |= cpu_to_le32(ctx->ht.protection << | |
593 | RXON_FLG_HT_OPERATING_MODE_POS); | |
594 | ||
595 | /* Set up channel bandwidth: | |
596 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ | |
597 | /* clear the HT channel mode before set the mode */ | |
598 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
599 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
600 | if (iwl_legacy_is_ht40_tx_allowed(priv, ctx, NULL)) { | |
601 | /* pure ht40 */ | |
602 | if (ctx->ht.protection == | |
603 | IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { | |
604 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; | |
605 | /* Note: control channel is opposite of extension channel */ | |
606 | switch (ctx->ht.extension_chan_offset) { | |
607 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
608 | rxon->flags &= | |
609 | ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
610 | break; | |
611 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
612 | rxon->flags |= | |
613 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
614 | break; | |
615 | } | |
616 | } else { | |
617 | /* Note: control channel is opposite of extension channel */ | |
618 | switch (ctx->ht.extension_chan_offset) { | |
619 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
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_BELOW: | |
625 | rxon->flags |= | |
626 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
627 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
628 | break; | |
629 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
630 | default: | |
631 | /* channel location only valid if in Mixed mode */ | |
632 | IWL_ERR(priv, | |
633 | "invalid extension channel offset\n"); | |
634 | break; | |
635 | } | |
636 | } | |
637 | } else { | |
638 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
639 | } | |
640 | ||
641 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
642 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
643 | ||
644 | IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " | |
645 | "extension channel offset 0x%x\n", | |
646 | le32_to_cpu(rxon->flags), ctx->ht.protection, | |
647 | ctx->ht.extension_chan_offset); | |
648 | } | |
649 | ||
650 | void iwl_legacy_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) | |
651 | { | |
652 | struct iwl_rxon_context *ctx; | |
653 | ||
654 | for_each_context(priv, ctx) | |
655 | _iwl_legacy_set_rxon_ht(priv, ht_conf, ctx); | |
656 | } | |
657 | EXPORT_SYMBOL(iwl_legacy_set_rxon_ht); | |
658 | ||
659 | /* Return valid, unused, channel for a passive scan to reset the RF */ | |
660 | u8 iwl_legacy_get_single_channel_number(struct iwl_priv *priv, | |
661 | enum ieee80211_band band) | |
662 | { | |
663 | const struct iwl_channel_info *ch_info; | |
664 | int i; | |
665 | u8 channel = 0; | |
666 | u8 min, max; | |
667 | struct iwl_rxon_context *ctx; | |
668 | ||
669 | if (band == IEEE80211_BAND_5GHZ) { | |
670 | min = 14; | |
671 | max = priv->channel_count; | |
672 | } else { | |
673 | min = 0; | |
674 | max = 14; | |
675 | } | |
676 | ||
677 | for (i = min; i < max; i++) { | |
678 | bool busy = false; | |
679 | ||
680 | for_each_context(priv, ctx) { | |
681 | busy = priv->channel_info[i].channel == | |
682 | le16_to_cpu(ctx->staging.channel); | |
683 | if (busy) | |
684 | break; | |
685 | } | |
686 | ||
687 | if (busy) | |
688 | continue; | |
689 | ||
690 | channel = priv->channel_info[i].channel; | |
691 | ch_info = iwl_legacy_get_channel_info(priv, band, channel); | |
692 | if (iwl_legacy_is_channel_valid(ch_info)) | |
693 | break; | |
694 | } | |
695 | ||
696 | return channel; | |
697 | } | |
698 | EXPORT_SYMBOL(iwl_legacy_get_single_channel_number); | |
699 | ||
700 | /** | |
701 | * iwl_legacy_set_rxon_channel - Set the band and channel values in staging RXON | |
702 | * @ch: requested channel as a pointer to struct ieee80211_channel | |
703 | ||
704 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
705 | * in the staging RXON flag structure based on the ch->band | |
706 | */ | |
707 | int | |
708 | iwl_legacy_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, | |
709 | struct iwl_rxon_context *ctx) | |
710 | { | |
711 | enum ieee80211_band band = ch->band; | |
712 | u16 channel = ch->hw_value; | |
713 | ||
714 | if ((le16_to_cpu(ctx->staging.channel) == channel) && | |
715 | (priv->band == band)) | |
716 | return 0; | |
717 | ||
718 | ctx->staging.channel = cpu_to_le16(channel); | |
719 | if (band == IEEE80211_BAND_5GHZ) | |
720 | ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK; | |
721 | else | |
722 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; | |
723 | ||
724 | priv->band = band; | |
725 | ||
726 | IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); | |
727 | ||
728 | return 0; | |
729 | } | |
730 | EXPORT_SYMBOL(iwl_legacy_set_rxon_channel); | |
731 | ||
732 | void iwl_legacy_set_flags_for_band(struct iwl_priv *priv, | |
733 | struct iwl_rxon_context *ctx, | |
734 | enum ieee80211_band band, | |
735 | struct ieee80211_vif *vif) | |
736 | { | |
737 | if (band == IEEE80211_BAND_5GHZ) { | |
738 | ctx->staging.flags &= | |
739 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
740 | | RXON_FLG_CCK_MSK); | |
741 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
742 | } else { | |
743 | /* Copied from iwl_post_associate() */ | |
744 | if (vif && vif->bss_conf.use_short_slot) | |
745 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
746 | else | |
747 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
748 | ||
749 | ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; | |
750 | ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
751 | ctx->staging.flags &= ~RXON_FLG_CCK_MSK; | |
752 | } | |
753 | } | |
754 | EXPORT_SYMBOL(iwl_legacy_set_flags_for_band); | |
755 | ||
756 | /* | |
757 | * initialize rxon structure with default values from eeprom | |
758 | */ | |
759 | void iwl_legacy_connection_init_rx_config(struct iwl_priv *priv, | |
760 | struct iwl_rxon_context *ctx) | |
761 | { | |
762 | const struct iwl_channel_info *ch_info; | |
763 | ||
764 | memset(&ctx->staging, 0, sizeof(ctx->staging)); | |
765 | ||
766 | if (!ctx->vif) { | |
767 | ctx->staging.dev_type = ctx->unused_devtype; | |
768 | } else | |
769 | switch (ctx->vif->type) { | |
770 | ||
771 | case NL80211_IFTYPE_STATION: | |
772 | ctx->staging.dev_type = ctx->station_devtype; | |
773 | ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
774 | break; | |
775 | ||
776 | case NL80211_IFTYPE_ADHOC: | |
777 | ctx->staging.dev_type = ctx->ibss_devtype; | |
778 | ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
779 | ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
780 | RXON_FILTER_ACCEPT_GRP_MSK; | |
781 | break; | |
782 | ||
783 | default: | |
784 | IWL_ERR(priv, "Unsupported interface type %d\n", | |
785 | ctx->vif->type); | |
786 | break; | |
787 | } | |
788 | ||
789 | #if 0 | |
790 | /* TODO: Figure out when short_preamble would be set and cache from | |
791 | * that */ | |
792 | if (!hw_to_local(priv->hw)->short_preamble) | |
793 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
794 | else | |
795 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
796 | #endif | |
797 | ||
798 | ch_info = iwl_legacy_get_channel_info(priv, priv->band, | |
799 | le16_to_cpu(ctx->active.channel)); | |
800 | ||
801 | if (!ch_info) | |
802 | ch_info = &priv->channel_info[0]; | |
803 | ||
804 | ctx->staging.channel = cpu_to_le16(ch_info->channel); | |
805 | priv->band = ch_info->band; | |
806 | ||
807 | iwl_legacy_set_flags_for_band(priv, ctx, priv->band, ctx->vif); | |
808 | ||
809 | ctx->staging.ofdm_basic_rates = | |
810 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
811 | ctx->staging.cck_basic_rates = | |
812 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
813 | ||
814 | /* clear both MIX and PURE40 mode flag */ | |
815 | ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | | |
816 | RXON_FLG_CHANNEL_MODE_PURE_40); | |
817 | if (ctx->vif) | |
818 | memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); | |
819 | ||
820 | ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; | |
821 | ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; | |
822 | } | |
823 | EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config); | |
824 | ||
825 | void iwl_legacy_set_rate(struct iwl_priv *priv) | |
826 | { | |
827 | const struct ieee80211_supported_band *hw = NULL; | |
828 | struct ieee80211_rate *rate; | |
829 | struct iwl_rxon_context *ctx; | |
830 | int i; | |
831 | ||
832 | hw = iwl_get_hw_mode(priv, priv->band); | |
833 | if (!hw) { | |
834 | IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); | |
835 | return; | |
836 | } | |
837 | ||
838 | priv->active_rate = 0; | |
839 | ||
840 | for (i = 0; i < hw->n_bitrates; i++) { | |
841 | rate = &(hw->bitrates[i]); | |
842 | if (rate->hw_value < IWL_RATE_COUNT_LEGACY) | |
843 | priv->active_rate |= (1 << rate->hw_value); | |
844 | } | |
845 | ||
846 | IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); | |
847 | ||
848 | for_each_context(priv, ctx) { | |
849 | ctx->staging.cck_basic_rates = | |
850 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
851 | ||
852 | ctx->staging.ofdm_basic_rates = | |
853 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
854 | } | |
855 | } | |
856 | EXPORT_SYMBOL(iwl_legacy_set_rate); | |
857 | ||
858 | void iwl_legacy_chswitch_done(struct iwl_priv *priv, bool is_success) | |
859 | { | |
860 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
861 | ||
862 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
863 | return; | |
864 | ||
865 | if (priv->switch_rxon.switch_in_progress) { | |
866 | ieee80211_chswitch_done(ctx->vif, is_success); | |
867 | mutex_lock(&priv->mutex); | |
868 | priv->switch_rxon.switch_in_progress = false; | |
869 | mutex_unlock(&priv->mutex); | |
870 | } | |
871 | } | |
872 | EXPORT_SYMBOL(iwl_legacy_chswitch_done); | |
873 | ||
874 | void iwl_legacy_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) | |
875 | { | |
876 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
877 | struct iwl_csa_notification *csa = &(pkt->u.csa_notif); | |
878 | ||
879 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
880 | struct iwl_legacy_rxon_cmd *rxon = (void *)&ctx->active; | |
881 | ||
882 | if (priv->switch_rxon.switch_in_progress) { | |
883 | if (!le32_to_cpu(csa->status) && | |
884 | (csa->channel == priv->switch_rxon.channel)) { | |
885 | rxon->channel = csa->channel; | |
886 | ctx->staging.channel = csa->channel; | |
887 | IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", | |
888 | le16_to_cpu(csa->channel)); | |
889 | iwl_legacy_chswitch_done(priv, true); | |
890 | } else { | |
891 | IWL_ERR(priv, "CSA notif (fail) : channel %d\n", | |
892 | le16_to_cpu(csa->channel)); | |
893 | iwl_legacy_chswitch_done(priv, false); | |
894 | } | |
895 | } | |
896 | } | |
897 | EXPORT_SYMBOL(iwl_legacy_rx_csa); | |
898 | ||
899 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
900 | void iwl_legacy_print_rx_config_cmd(struct iwl_priv *priv, | |
901 | struct iwl_rxon_context *ctx) | |
902 | { | |
903 | struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; | |
904 | ||
905 | IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); | |
906 | iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); | |
907 | IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", | |
908 | le16_to_cpu(rxon->channel)); | |
909 | IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
910 | IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", | |
911 | le32_to_cpu(rxon->filter_flags)); | |
912 | IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); | |
913 | IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", | |
914 | rxon->ofdm_basic_rates); | |
915 | IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", | |
916 | rxon->cck_basic_rates); | |
917 | IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); | |
918 | IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
919 | IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", | |
920 | le16_to_cpu(rxon->assoc_id)); | |
921 | } | |
922 | EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd); | |
923 | #endif | |
924 | /** | |
925 | * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card | |
926 | */ | |
927 | void iwl_legacy_irq_handle_error(struct iwl_priv *priv) | |
928 | { | |
929 | /* Set the FW error flag -- cleared on iwl_down */ | |
930 | set_bit(STATUS_FW_ERROR, &priv->status); | |
931 | ||
932 | /* Cancel currently queued command. */ | |
933 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
934 | ||
935 | IWL_ERR(priv, "Loaded firmware version: %s\n", | |
936 | priv->hw->wiphy->fw_version); | |
937 | ||
938 | priv->cfg->ops->lib->dump_nic_error_log(priv); | |
939 | if (priv->cfg->ops->lib->dump_fh) | |
940 | priv->cfg->ops->lib->dump_fh(priv, NULL, false); | |
941 | priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); | |
942 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
943 | if (iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) | |
944 | iwl_legacy_print_rx_config_cmd(priv, | |
945 | &priv->contexts[IWL_RXON_CTX_BSS]); | |
946 | #endif | |
947 | ||
948 | wake_up_interruptible(&priv->wait_command_queue); | |
949 | ||
950 | /* Keep the restart process from trying to send host | |
951 | * commands by clearing the INIT status bit */ | |
952 | clear_bit(STATUS_READY, &priv->status); | |
953 | ||
954 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
955 | IWL_DEBUG(priv, IWL_DL_FW_ERRORS, | |
956 | "Restarting adapter due to uCode error.\n"); | |
957 | ||
958 | if (priv->cfg->mod_params->restart_fw) | |
959 | queue_work(priv->workqueue, &priv->restart); | |
960 | } | |
961 | } | |
962 | EXPORT_SYMBOL(iwl_legacy_irq_handle_error); | |
963 | ||
964 | static int iwl_legacy_apm_stop_master(struct iwl_priv *priv) | |
965 | { | |
966 | int ret = 0; | |
967 | ||
968 | /* stop device's busmaster DMA activity */ | |
969 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); | |
970 | ||
971 | ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, | |
972 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
973 | if (ret) | |
974 | IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); | |
975 | ||
976 | IWL_DEBUG_INFO(priv, "stop master\n"); | |
977 | ||
978 | return ret; | |
979 | } | |
980 | ||
981 | void iwl_legacy_apm_stop(struct iwl_priv *priv) | |
982 | { | |
983 | IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); | |
984 | ||
985 | /* Stop device's DMA activity */ | |
986 | iwl_legacy_apm_stop_master(priv); | |
987 | ||
988 | /* Reset the entire device */ | |
989 | iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
990 | ||
991 | udelay(10); | |
992 | ||
993 | /* | |
994 | * Clear "initialization complete" bit to move adapter from | |
995 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
996 | */ | |
997 | iwl_legacy_clear_bit(priv, CSR_GP_CNTRL, | |
998 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
999 | } | |
1000 | EXPORT_SYMBOL(iwl_legacy_apm_stop); | |
1001 | ||
1002 | ||
1003 | /* | |
1004 | * Start up NIC's basic functionality after it has been reset | |
1005 | * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop()) | |
1006 | * NOTE: This does not load uCode nor start the embedded processor | |
1007 | */ | |
1008 | int iwl_legacy_apm_init(struct iwl_priv *priv) | |
1009 | { | |
1010 | int ret = 0; | |
1011 | u16 lctl; | |
1012 | ||
1013 | IWL_DEBUG_INFO(priv, "Init card's basic functions\n"); | |
1014 | ||
1015 | /* | |
1016 | * Use "set_bit" below rather than "write", to preserve any hardware | |
1017 | * bits already set by default after reset. | |
1018 | */ | |
1019 | ||
1020 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
1021 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1022 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
1023 | ||
1024 | /* | |
1025 | * Disable L0s without affecting L1; | |
1026 | * don't wait for ICH L0s (ICH bug W/A) | |
1027 | */ | |
1028 | iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1029 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); | |
1030 | ||
1031 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
1032 | iwl_legacy_set_bit(priv, CSR_DBG_HPET_MEM_REG, | |
1033 | CSR_DBG_HPET_MEM_REG_VAL); | |
1034 | ||
1035 | /* | |
1036 | * Enable HAP INTA (interrupt from management bus) to | |
1037 | * wake device's PCI Express link L1a -> L0s | |
25985edc | 1038 | * NOTE: This is no-op for 3945 (non-existent bit) |
be663ab6 WYG |
1039 | */ |
1040 | iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG, | |
1041 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); | |
1042 | ||
1043 | /* | |
1044 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. | |
1045 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
1046 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
1047 | * costs negligible amount of power savings. | |
1048 | * If not (unlikely), enable L0S, so there is at least some | |
1049 | * power savings, even without L1. | |
1050 | */ | |
1051 | if (priv->cfg->base_params->set_l0s) { | |
1052 | lctl = iwl_legacy_pcie_link_ctl(priv); | |
1053 | if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == | |
1054 | PCI_CFG_LINK_CTRL_VAL_L1_EN) { | |
1055 | /* L1-ASPM enabled; disable(!) L0S */ | |
1056 | iwl_legacy_set_bit(priv, CSR_GIO_REG, | |
1057 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1058 | IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); | |
1059 | } else { | |
1060 | /* L1-ASPM disabled; enable(!) L0S */ | |
1061 | iwl_legacy_clear_bit(priv, CSR_GIO_REG, | |
1062 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1063 | IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | /* Configure analog phase-lock-loop before activating to D0A */ | |
1068 | if (priv->cfg->base_params->pll_cfg_val) | |
1069 | iwl_legacy_set_bit(priv, CSR_ANA_PLL_CFG, | |
1070 | priv->cfg->base_params->pll_cfg_val); | |
1071 | ||
1072 | /* | |
1073 | * Set "initialization complete" bit to move adapter from | |
1074 | * D0U* --> D0A* (powered-up active) state. | |
1075 | */ | |
1076 | iwl_legacy_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1077 | ||
1078 | /* | |
1079 | * Wait for clock stabilization; once stabilized, access to | |
1080 | * device-internal resources is supported, e.g. iwl_legacy_write_prph() | |
1081 | * and accesses to uCode SRAM. | |
1082 | */ | |
1083 | ret = iwl_poll_bit(priv, CSR_GP_CNTRL, | |
1084 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1085 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
1086 | if (ret < 0) { | |
1087 | IWL_DEBUG_INFO(priv, "Failed to init the card\n"); | |
1088 | goto out; | |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
1093 | * BSM (Boostrap State Machine) is only in 3945 and 4965. | |
1094 | * | |
1095 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
1096 | * do not disable clocks. This preserves any hardware bits already | |
1097 | * set by default in "CLK_CTRL_REG" after reset. | |
1098 | */ | |
1099 | if (priv->cfg->base_params->use_bsm) | |
1100 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, | |
1101 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); | |
1102 | else | |
1103 | iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, | |
1104 | APMG_CLK_VAL_DMA_CLK_RQT); | |
1105 | udelay(20); | |
1106 | ||
1107 | /* Disable L1-Active */ | |
1108 | iwl_legacy_set_bits_prph(priv, APMG_PCIDEV_STT_REG, | |
1109 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
1110 | ||
1111 | out: | |
1112 | return ret; | |
1113 | } | |
1114 | EXPORT_SYMBOL(iwl_legacy_apm_init); | |
1115 | ||
1116 | ||
1117 | int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) | |
1118 | { | |
1119 | int ret; | |
1120 | s8 prev_tx_power; | |
43f12d47 SG |
1121 | bool defer; |
1122 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
be663ab6 WYG |
1123 | |
1124 | lockdep_assert_held(&priv->mutex); | |
1125 | ||
1126 | if (priv->tx_power_user_lmt == tx_power && !force) | |
1127 | return 0; | |
1128 | ||
1129 | if (!priv->cfg->ops->lib->send_tx_power) | |
1130 | return -EOPNOTSUPP; | |
1131 | ||
332704a5 SG |
1132 | /* 0 dBm mean 1 milliwatt */ |
1133 | if (tx_power < 0) { | |
be663ab6 | 1134 | IWL_WARN(priv, |
332704a5 SG |
1135 | "Requested user TXPOWER %d below 1 mW.\n", |
1136 | tx_power); | |
be663ab6 WYG |
1137 | return -EINVAL; |
1138 | } | |
1139 | ||
1140 | if (tx_power > priv->tx_power_device_lmt) { | |
1141 | IWL_WARN(priv, | |
1142 | "Requested user TXPOWER %d above upper limit %d.\n", | |
1143 | tx_power, priv->tx_power_device_lmt); | |
1144 | return -EINVAL; | |
1145 | } | |
1146 | ||
1147 | if (!iwl_legacy_is_ready_rf(priv)) | |
1148 | return -EIO; | |
1149 | ||
43f12d47 SG |
1150 | /* scan complete and commit_rxon use tx_power_next value, |
1151 | * it always need to be updated for newest request */ | |
be663ab6 | 1152 | priv->tx_power_next = tx_power; |
43f12d47 SG |
1153 | |
1154 | /* do not set tx power when scanning or channel changing */ | |
1155 | defer = test_bit(STATUS_SCANNING, &priv->status) || | |
1156 | memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); | |
1157 | if (defer && !force) { | |
1158 | IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); | |
be663ab6 WYG |
1159 | return 0; |
1160 | } | |
1161 | ||
1162 | prev_tx_power = priv->tx_power_user_lmt; | |
1163 | priv->tx_power_user_lmt = tx_power; | |
1164 | ||
1165 | ret = priv->cfg->ops->lib->send_tx_power(priv); | |
1166 | ||
1167 | /* if fail to set tx_power, restore the orig. tx power */ | |
1168 | if (ret) { | |
1169 | priv->tx_power_user_lmt = prev_tx_power; | |
1170 | priv->tx_power_next = prev_tx_power; | |
1171 | } | |
1172 | return ret; | |
1173 | } | |
1174 | EXPORT_SYMBOL(iwl_legacy_set_tx_power); | |
1175 | ||
1176 | void iwl_legacy_send_bt_config(struct iwl_priv *priv) | |
1177 | { | |
1178 | struct iwl_bt_cmd bt_cmd = { | |
1179 | .lead_time = BT_LEAD_TIME_DEF, | |
1180 | .max_kill = BT_MAX_KILL_DEF, | |
1181 | .kill_ack_mask = 0, | |
1182 | .kill_cts_mask = 0, | |
1183 | }; | |
1184 | ||
1185 | if (!bt_coex_active) | |
1186 | bt_cmd.flags = BT_COEX_DISABLE; | |
1187 | else | |
1188 | bt_cmd.flags = BT_COEX_ENABLE; | |
1189 | ||
1190 | IWL_DEBUG_INFO(priv, "BT coex %s\n", | |
1191 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); | |
1192 | ||
1193 | if (iwl_legacy_send_cmd_pdu(priv, REPLY_BT_CONFIG, | |
1194 | sizeof(struct iwl_bt_cmd), &bt_cmd)) | |
1195 | IWL_ERR(priv, "failed to send BT Coex Config\n"); | |
1196 | } | |
1197 | EXPORT_SYMBOL(iwl_legacy_send_bt_config); | |
1198 | ||
1199 | int iwl_legacy_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) | |
1200 | { | |
1201 | struct iwl_statistics_cmd statistics_cmd = { | |
1202 | .configuration_flags = | |
1203 | clear ? IWL_STATS_CONF_CLEAR_STATS : 0, | |
1204 | }; | |
1205 | ||
1206 | if (flags & CMD_ASYNC) | |
1207 | return iwl_legacy_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, | |
1208 | sizeof(struct iwl_statistics_cmd), | |
1209 | &statistics_cmd, NULL); | |
1210 | else | |
1211 | return iwl_legacy_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, | |
1212 | sizeof(struct iwl_statistics_cmd), | |
1213 | &statistics_cmd); | |
1214 | } | |
1215 | EXPORT_SYMBOL(iwl_legacy_send_statistics_request); | |
1216 | ||
1217 | void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv *priv, | |
1218 | struct iwl_rx_mem_buffer *rxb) | |
1219 | { | |
1220 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG | |
1221 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1222 | struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); | |
1223 | IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", | |
1224 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); | |
1225 | #endif | |
1226 | } | |
1227 | EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif); | |
1228 | ||
1229 | void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv *priv, | |
1230 | struct iwl_rx_mem_buffer *rxb) | |
1231 | { | |
1232 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1233 | u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; | |
1234 | IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " | |
1235 | "notification for %s:\n", len, | |
1236 | iwl_legacy_get_cmd_string(pkt->hdr.cmd)); | |
1237 | iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); | |
1238 | } | |
1239 | EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif); | |
1240 | ||
1241 | void iwl_legacy_rx_reply_error(struct iwl_priv *priv, | |
1242 | struct iwl_rx_mem_buffer *rxb) | |
1243 | { | |
1244 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1245 | ||
1246 | IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " | |
1247 | "seq 0x%04X ser 0x%08X\n", | |
1248 | le32_to_cpu(pkt->u.err_resp.error_type), | |
1249 | iwl_legacy_get_cmd_string(pkt->u.err_resp.cmd_id), | |
1250 | pkt->u.err_resp.cmd_id, | |
1251 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
1252 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
1253 | } | |
1254 | EXPORT_SYMBOL(iwl_legacy_rx_reply_error); | |
1255 | ||
1256 | void iwl_legacy_clear_isr_stats(struct iwl_priv *priv) | |
1257 | { | |
1258 | memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); | |
1259 | } | |
1260 | ||
1261 | int iwl_legacy_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
1262 | const struct ieee80211_tx_queue_params *params) | |
1263 | { | |
1264 | struct iwl_priv *priv = hw->priv; | |
1265 | struct iwl_rxon_context *ctx; | |
1266 | unsigned long flags; | |
1267 | int q; | |
1268 | ||
1269 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1270 | ||
1271 | if (!iwl_legacy_is_ready_rf(priv)) { | |
1272 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
1273 | return -EIO; | |
1274 | } | |
1275 | ||
1276 | if (queue >= AC_NUM) { | |
1277 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); | |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | q = AC_NUM - 1 - queue; | |
1282 | ||
1283 | spin_lock_irqsave(&priv->lock, flags); | |
1284 | ||
1285 | for_each_context(priv, ctx) { | |
1286 | ctx->qos_data.def_qos_parm.ac[q].cw_min = | |
1287 | cpu_to_le16(params->cw_min); | |
1288 | ctx->qos_data.def_qos_parm.ac[q].cw_max = | |
1289 | cpu_to_le16(params->cw_max); | |
1290 | ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
1291 | ctx->qos_data.def_qos_parm.ac[q].edca_txop = | |
1292 | cpu_to_le16((params->txop * 32)); | |
1293 | ||
1294 | ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
1295 | } | |
1296 | ||
1297 | spin_unlock_irqrestore(&priv->lock, flags); | |
1298 | ||
1299 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1300 | return 0; | |
1301 | } | |
1302 | EXPORT_SYMBOL(iwl_legacy_mac_conf_tx); | |
1303 | ||
1304 | int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw *hw) | |
1305 | { | |
1306 | struct iwl_priv *priv = hw->priv; | |
1307 | ||
1308 | return priv->ibss_manager == IWL_IBSS_MANAGER; | |
1309 | } | |
1310 | EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon); | |
1311 | ||
1312 | static int | |
1313 | iwl_legacy_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
1314 | { | |
1315 | iwl_legacy_connection_init_rx_config(priv, ctx); | |
1316 | ||
1317 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
1318 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
1319 | ||
1320 | return iwl_legacy_commit_rxon(priv, ctx); | |
1321 | } | |
1322 | ||
1323 | static int iwl_legacy_setup_interface(struct iwl_priv *priv, | |
1324 | struct iwl_rxon_context *ctx) | |
1325 | { | |
1326 | struct ieee80211_vif *vif = ctx->vif; | |
1327 | int err; | |
1328 | ||
1329 | lockdep_assert_held(&priv->mutex); | |
1330 | ||
1331 | /* | |
1332 | * This variable will be correct only when there's just | |
1333 | * a single context, but all code using it is for hardware | |
1334 | * that supports only one context. | |
1335 | */ | |
1336 | priv->iw_mode = vif->type; | |
1337 | ||
1338 | ctx->is_active = true; | |
1339 | ||
1340 | err = iwl_legacy_set_mode(priv, ctx); | |
1341 | if (err) { | |
1342 | if (!ctx->always_active) | |
1343 | ctx->is_active = false; | |
1344 | return err; | |
1345 | } | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | int | |
1351 | iwl_legacy_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
1352 | { | |
1353 | struct iwl_priv *priv = hw->priv; | |
1354 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
1355 | struct iwl_rxon_context *tmp, *ctx = NULL; | |
1356 | int err; | |
1357 | ||
1358 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", | |
1359 | vif->type, vif->addr); | |
1360 | ||
1361 | mutex_lock(&priv->mutex); | |
1362 | ||
1363 | if (!iwl_legacy_is_ready_rf(priv)) { | |
1364 | IWL_WARN(priv, "Try to add interface when device not ready\n"); | |
1365 | err = -EINVAL; | |
1366 | goto out; | |
1367 | } | |
1368 | ||
1369 | for_each_context(priv, tmp) { | |
1370 | u32 possible_modes = | |
1371 | tmp->interface_modes | tmp->exclusive_interface_modes; | |
1372 | ||
1373 | if (tmp->vif) { | |
1374 | /* check if this busy context is exclusive */ | |
1375 | if (tmp->exclusive_interface_modes & | |
1376 | BIT(tmp->vif->type)) { | |
1377 | err = -EINVAL; | |
1378 | goto out; | |
1379 | } | |
1380 | continue; | |
1381 | } | |
1382 | ||
1383 | if (!(possible_modes & BIT(vif->type))) | |
1384 | continue; | |
1385 | ||
1386 | /* have maybe usable context w/o interface */ | |
1387 | ctx = tmp; | |
1388 | break; | |
1389 | } | |
1390 | ||
1391 | if (!ctx) { | |
1392 | err = -EOPNOTSUPP; | |
1393 | goto out; | |
1394 | } | |
1395 | ||
1396 | vif_priv->ctx = ctx; | |
1397 | ctx->vif = vif; | |
1398 | ||
1399 | err = iwl_legacy_setup_interface(priv, ctx); | |
1400 | if (!err) | |
1401 | goto out; | |
1402 | ||
1403 | ctx->vif = NULL; | |
1404 | priv->iw_mode = NL80211_IFTYPE_STATION; | |
1405 | out: | |
1406 | mutex_unlock(&priv->mutex); | |
1407 | ||
1408 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1409 | return err; | |
1410 | } | |
1411 | EXPORT_SYMBOL(iwl_legacy_mac_add_interface); | |
1412 | ||
1413 | static void iwl_legacy_teardown_interface(struct iwl_priv *priv, | |
1414 | struct ieee80211_vif *vif, | |
1415 | bool mode_change) | |
1416 | { | |
1417 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1418 | ||
1419 | lockdep_assert_held(&priv->mutex); | |
1420 | ||
1421 | if (priv->scan_vif == vif) { | |
1422 | iwl_legacy_scan_cancel_timeout(priv, 200); | |
1423 | iwl_legacy_force_scan_end(priv); | |
1424 | } | |
1425 | ||
1426 | if (!mode_change) { | |
1427 | iwl_legacy_set_mode(priv, ctx); | |
1428 | if (!ctx->always_active) | |
1429 | ctx->is_active = false; | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | void iwl_legacy_mac_remove_interface(struct ieee80211_hw *hw, | |
1434 | struct ieee80211_vif *vif) | |
1435 | { | |
1436 | struct iwl_priv *priv = hw->priv; | |
1437 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1438 | ||
1439 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1440 | ||
1441 | mutex_lock(&priv->mutex); | |
1442 | ||
1443 | WARN_ON(ctx->vif != vif); | |
1444 | ctx->vif = NULL; | |
1445 | ||
1446 | iwl_legacy_teardown_interface(priv, vif, false); | |
1447 | ||
1448 | memset(priv->bssid, 0, ETH_ALEN); | |
1449 | mutex_unlock(&priv->mutex); | |
1450 | ||
1451 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1452 | ||
1453 | } | |
1454 | EXPORT_SYMBOL(iwl_legacy_mac_remove_interface); | |
1455 | ||
1456 | int iwl_legacy_alloc_txq_mem(struct iwl_priv *priv) | |
1457 | { | |
1458 | if (!priv->txq) | |
1459 | priv->txq = kzalloc( | |
1460 | sizeof(struct iwl_tx_queue) * | |
1461 | priv->cfg->base_params->num_of_queues, | |
1462 | GFP_KERNEL); | |
1463 | if (!priv->txq) { | |
1464 | IWL_ERR(priv, "Not enough memory for txq\n"); | |
1465 | return -ENOMEM; | |
1466 | } | |
1467 | return 0; | |
1468 | } | |
1469 | EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem); | |
1470 | ||
1471 | void iwl_legacy_txq_mem(struct iwl_priv *priv) | |
1472 | { | |
1473 | kfree(priv->txq); | |
1474 | priv->txq = NULL; | |
1475 | } | |
1476 | EXPORT_SYMBOL(iwl_legacy_txq_mem); | |
1477 | ||
1478 | #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS | |
1479 | ||
1480 | #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) | |
1481 | ||
1482 | void iwl_legacy_reset_traffic_log(struct iwl_priv *priv) | |
1483 | { | |
1484 | priv->tx_traffic_idx = 0; | |
1485 | priv->rx_traffic_idx = 0; | |
1486 | if (priv->tx_traffic) | |
1487 | memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1488 | if (priv->rx_traffic) | |
1489 | memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
1490 | } | |
1491 | ||
1492 | int iwl_legacy_alloc_traffic_mem(struct iwl_priv *priv) | |
1493 | { | |
1494 | u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; | |
1495 | ||
ef33417d | 1496 | if (iwlegacy_debug_level & IWL_DL_TX) { |
be663ab6 WYG |
1497 | if (!priv->tx_traffic) { |
1498 | priv->tx_traffic = | |
1499 | kzalloc(traffic_size, GFP_KERNEL); | |
1500 | if (!priv->tx_traffic) | |
1501 | return -ENOMEM; | |
1502 | } | |
1503 | } | |
ef33417d | 1504 | if (iwlegacy_debug_level & IWL_DL_RX) { |
be663ab6 WYG |
1505 | if (!priv->rx_traffic) { |
1506 | priv->rx_traffic = | |
1507 | kzalloc(traffic_size, GFP_KERNEL); | |
1508 | if (!priv->rx_traffic) | |
1509 | return -ENOMEM; | |
1510 | } | |
1511 | } | |
1512 | iwl_legacy_reset_traffic_log(priv); | |
1513 | return 0; | |
1514 | } | |
1515 | EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem); | |
1516 | ||
1517 | void iwl_legacy_free_traffic_mem(struct iwl_priv *priv) | |
1518 | { | |
1519 | kfree(priv->tx_traffic); | |
1520 | priv->tx_traffic = NULL; | |
1521 | ||
1522 | kfree(priv->rx_traffic); | |
1523 | priv->rx_traffic = NULL; | |
1524 | } | |
1525 | EXPORT_SYMBOL(iwl_legacy_free_traffic_mem); | |
1526 | ||
1527 | void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv *priv, | |
1528 | u16 length, struct ieee80211_hdr *header) | |
1529 | { | |
1530 | __le16 fc; | |
1531 | u16 len; | |
1532 | ||
ef33417d | 1533 | if (likely(!(iwlegacy_debug_level & IWL_DL_TX))) |
be663ab6 WYG |
1534 | return; |
1535 | ||
1536 | if (!priv->tx_traffic) | |
1537 | return; | |
1538 | ||
1539 | fc = header->frame_control; | |
1540 | if (ieee80211_is_data(fc)) { | |
1541 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1542 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1543 | memcpy((priv->tx_traffic + | |
1544 | (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1545 | header, len); | |
1546 | priv->tx_traffic_idx = | |
1547 | (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1548 | } | |
1549 | } | |
1550 | EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame); | |
1551 | ||
1552 | void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv *priv, | |
1553 | u16 length, struct ieee80211_hdr *header) | |
1554 | { | |
1555 | __le16 fc; | |
1556 | u16 len; | |
1557 | ||
ef33417d | 1558 | if (likely(!(iwlegacy_debug_level & IWL_DL_RX))) |
be663ab6 WYG |
1559 | return; |
1560 | ||
1561 | if (!priv->rx_traffic) | |
1562 | return; | |
1563 | ||
1564 | fc = header->frame_control; | |
1565 | if (ieee80211_is_data(fc)) { | |
1566 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
1567 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
1568 | memcpy((priv->rx_traffic + | |
1569 | (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
1570 | header, len); | |
1571 | priv->rx_traffic_idx = | |
1572 | (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
1573 | } | |
1574 | } | |
1575 | EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame); | |
1576 | ||
1577 | const char *iwl_legacy_get_mgmt_string(int cmd) | |
1578 | { | |
1579 | switch (cmd) { | |
1580 | IWL_CMD(MANAGEMENT_ASSOC_REQ); | |
1581 | IWL_CMD(MANAGEMENT_ASSOC_RESP); | |
1582 | IWL_CMD(MANAGEMENT_REASSOC_REQ); | |
1583 | IWL_CMD(MANAGEMENT_REASSOC_RESP); | |
1584 | IWL_CMD(MANAGEMENT_PROBE_REQ); | |
1585 | IWL_CMD(MANAGEMENT_PROBE_RESP); | |
1586 | IWL_CMD(MANAGEMENT_BEACON); | |
1587 | IWL_CMD(MANAGEMENT_ATIM); | |
1588 | IWL_CMD(MANAGEMENT_DISASSOC); | |
1589 | IWL_CMD(MANAGEMENT_AUTH); | |
1590 | IWL_CMD(MANAGEMENT_DEAUTH); | |
1591 | IWL_CMD(MANAGEMENT_ACTION); | |
1592 | default: | |
1593 | return "UNKNOWN"; | |
1594 | ||
1595 | } | |
1596 | } | |
1597 | ||
1598 | const char *iwl_legacy_get_ctrl_string(int cmd) | |
1599 | { | |
1600 | switch (cmd) { | |
1601 | IWL_CMD(CONTROL_BACK_REQ); | |
1602 | IWL_CMD(CONTROL_BACK); | |
1603 | IWL_CMD(CONTROL_PSPOLL); | |
1604 | IWL_CMD(CONTROL_RTS); | |
1605 | IWL_CMD(CONTROL_CTS); | |
1606 | IWL_CMD(CONTROL_ACK); | |
1607 | IWL_CMD(CONTROL_CFEND); | |
1608 | IWL_CMD(CONTROL_CFENDACK); | |
1609 | default: | |
1610 | return "UNKNOWN"; | |
1611 | ||
1612 | } | |
1613 | } | |
1614 | ||
1615 | void iwl_legacy_clear_traffic_stats(struct iwl_priv *priv) | |
1616 | { | |
1617 | memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); | |
1618 | memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); | |
1619 | } | |
1620 | ||
1621 | /* | |
1622 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS defined, | |
1623 | * iwl_legacy_update_stats function will | |
1624 | * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass | |
1625 | * Use debugFs to display the rx/rx_statistics | |
1626 | * if CONFIG_IWLWIFI_LEGACY_DEBUGFS not being defined, then no MGMT and CTRL | |
1627 | * information will be recorded, but DATA pkt still will be recorded | |
1628 | * for the reason of iwl_led.c need to control the led blinking based on | |
1629 | * number of tx and rx data. | |
1630 | * | |
1631 | */ | |
1632 | void | |
1633 | iwl_legacy_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) | |
1634 | { | |
1635 | struct traffic_stats *stats; | |
1636 | ||
1637 | if (is_tx) | |
1638 | stats = &priv->tx_stats; | |
1639 | else | |
1640 | stats = &priv->rx_stats; | |
1641 | ||
1642 | if (ieee80211_is_mgmt(fc)) { | |
1643 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1644 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
1645 | stats->mgmt[MANAGEMENT_ASSOC_REQ]++; | |
1646 | break; | |
1647 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): | |
1648 | stats->mgmt[MANAGEMENT_ASSOC_RESP]++; | |
1649 | break; | |
1650 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
1651 | stats->mgmt[MANAGEMENT_REASSOC_REQ]++; | |
1652 | break; | |
1653 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): | |
1654 | stats->mgmt[MANAGEMENT_REASSOC_RESP]++; | |
1655 | break; | |
1656 | case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): | |
1657 | stats->mgmt[MANAGEMENT_PROBE_REQ]++; | |
1658 | break; | |
1659 | case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): | |
1660 | stats->mgmt[MANAGEMENT_PROBE_RESP]++; | |
1661 | break; | |
1662 | case cpu_to_le16(IEEE80211_STYPE_BEACON): | |
1663 | stats->mgmt[MANAGEMENT_BEACON]++; | |
1664 | break; | |
1665 | case cpu_to_le16(IEEE80211_STYPE_ATIM): | |
1666 | stats->mgmt[MANAGEMENT_ATIM]++; | |
1667 | break; | |
1668 | case cpu_to_le16(IEEE80211_STYPE_DISASSOC): | |
1669 | stats->mgmt[MANAGEMENT_DISASSOC]++; | |
1670 | break; | |
1671 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
1672 | stats->mgmt[MANAGEMENT_AUTH]++; | |
1673 | break; | |
1674 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
1675 | stats->mgmt[MANAGEMENT_DEAUTH]++; | |
1676 | break; | |
1677 | case cpu_to_le16(IEEE80211_STYPE_ACTION): | |
1678 | stats->mgmt[MANAGEMENT_ACTION]++; | |
1679 | break; | |
1680 | } | |
1681 | } else if (ieee80211_is_ctl(fc)) { | |
1682 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
1683 | case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): | |
1684 | stats->ctrl[CONTROL_BACK_REQ]++; | |
1685 | break; | |
1686 | case cpu_to_le16(IEEE80211_STYPE_BACK): | |
1687 | stats->ctrl[CONTROL_BACK]++; | |
1688 | break; | |
1689 | case cpu_to_le16(IEEE80211_STYPE_PSPOLL): | |
1690 | stats->ctrl[CONTROL_PSPOLL]++; | |
1691 | break; | |
1692 | case cpu_to_le16(IEEE80211_STYPE_RTS): | |
1693 | stats->ctrl[CONTROL_RTS]++; | |
1694 | break; | |
1695 | case cpu_to_le16(IEEE80211_STYPE_CTS): | |
1696 | stats->ctrl[CONTROL_CTS]++; | |
1697 | break; | |
1698 | case cpu_to_le16(IEEE80211_STYPE_ACK): | |
1699 | stats->ctrl[CONTROL_ACK]++; | |
1700 | break; | |
1701 | case cpu_to_le16(IEEE80211_STYPE_CFEND): | |
1702 | stats->ctrl[CONTROL_CFEND]++; | |
1703 | break; | |
1704 | case cpu_to_le16(IEEE80211_STYPE_CFENDACK): | |
1705 | stats->ctrl[CONTROL_CFENDACK]++; | |
1706 | break; | |
1707 | } | |
1708 | } else { | |
1709 | /* data */ | |
1710 | stats->data_cnt++; | |
1711 | stats->data_bytes += len; | |
1712 | } | |
1713 | } | |
1714 | EXPORT_SYMBOL(iwl_legacy_update_stats); | |
1715 | #endif | |
1716 | ||
1717 | static void _iwl_legacy_force_rf_reset(struct iwl_priv *priv) | |
1718 | { | |
1719 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1720 | return; | |
1721 | ||
1722 | if (!iwl_legacy_is_any_associated(priv)) { | |
1723 | IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); | |
1724 | return; | |
1725 | } | |
1726 | /* | |
1727 | * There is no easy and better way to force reset the radio, | |
1728 | * the only known method is switching channel which will force to | |
1729 | * reset and tune the radio. | |
1730 | * Use internal short scan (single channel) operation to should | |
1731 | * achieve this objective. | |
1732 | * Driver should reset the radio when number of consecutive missed | |
1733 | * beacon, or any other uCode error condition detected. | |
1734 | */ | |
1735 | IWL_DEBUG_INFO(priv, "perform radio reset.\n"); | |
1736 | iwl_legacy_internal_short_hw_scan(priv); | |
1737 | } | |
1738 | ||
1739 | ||
1740 | int iwl_legacy_force_reset(struct iwl_priv *priv, int mode, bool external) | |
1741 | { | |
1742 | struct iwl_force_reset *force_reset; | |
1743 | ||
1744 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1745 | return -EINVAL; | |
1746 | ||
1747 | if (mode >= IWL_MAX_FORCE_RESET) { | |
1748 | IWL_DEBUG_INFO(priv, "invalid reset request.\n"); | |
1749 | return -EINVAL; | |
1750 | } | |
1751 | force_reset = &priv->force_reset[mode]; | |
1752 | force_reset->reset_request_count++; | |
1753 | if (!external) { | |
1754 | if (force_reset->last_force_reset_jiffies && | |
1755 | time_after(force_reset->last_force_reset_jiffies + | |
1756 | force_reset->reset_duration, jiffies)) { | |
1757 | IWL_DEBUG_INFO(priv, "force reset rejected\n"); | |
1758 | force_reset->reset_reject_count++; | |
1759 | return -EAGAIN; | |
1760 | } | |
1761 | } | |
1762 | force_reset->reset_success_count++; | |
1763 | force_reset->last_force_reset_jiffies = jiffies; | |
1764 | IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); | |
1765 | switch (mode) { | |
1766 | case IWL_RF_RESET: | |
1767 | _iwl_legacy_force_rf_reset(priv); | |
1768 | break; | |
1769 | case IWL_FW_RESET: | |
1770 | /* | |
1771 | * if the request is from external(ex: debugfs), | |
1772 | * then always perform the request in regardless the module | |
1773 | * parameter setting | |
1774 | * if the request is from internal (uCode error or driver | |
1775 | * detect failure), then fw_restart module parameter | |
1776 | * need to be check before performing firmware reload | |
1777 | */ | |
1778 | if (!external && !priv->cfg->mod_params->restart_fw) { | |
1779 | IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " | |
1780 | "module parameter setting\n"); | |
1781 | break; | |
1782 | } | |
1783 | IWL_ERR(priv, "On demand firmware reload\n"); | |
1784 | /* Set the FW error flag -- cleared on iwl_down */ | |
1785 | set_bit(STATUS_FW_ERROR, &priv->status); | |
1786 | wake_up_interruptible(&priv->wait_command_queue); | |
1787 | /* | |
1788 | * Keep the restart process from trying to send host | |
1789 | * commands by clearing the INIT status bit | |
1790 | */ | |
1791 | clear_bit(STATUS_READY, &priv->status); | |
1792 | queue_work(priv->workqueue, &priv->restart); | |
1793 | break; | |
1794 | } | |
1795 | return 0; | |
1796 | } | |
1797 | ||
1798 | int | |
1799 | iwl_legacy_mac_change_interface(struct ieee80211_hw *hw, | |
1800 | struct ieee80211_vif *vif, | |
1801 | enum nl80211_iftype newtype, bool newp2p) | |
1802 | { | |
1803 | struct iwl_priv *priv = hw->priv; | |
1804 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
1805 | struct iwl_rxon_context *tmp; | |
1806 | u32 interface_modes; | |
1807 | int err; | |
1808 | ||
1809 | newtype = ieee80211_iftype_p2p(newtype, newp2p); | |
1810 | ||
1811 | mutex_lock(&priv->mutex); | |
1812 | ||
ffd8c746 JB |
1813 | if (!ctx->vif || !iwl_legacy_is_ready_rf(priv)) { |
1814 | /* | |
1815 | * Huh? But wait ... this can maybe happen when | |
1816 | * we're in the middle of a firmware restart! | |
1817 | */ | |
1818 | err = -EBUSY; | |
1819 | goto out; | |
1820 | } | |
1821 | ||
be663ab6 WYG |
1822 | interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; |
1823 | ||
1824 | if (!(interface_modes & BIT(newtype))) { | |
1825 | err = -EBUSY; | |
1826 | goto out; | |
1827 | } | |
1828 | ||
1829 | if (ctx->exclusive_interface_modes & BIT(newtype)) { | |
1830 | for_each_context(priv, tmp) { | |
1831 | if (ctx == tmp) | |
1832 | continue; | |
1833 | ||
1834 | if (!tmp->vif) | |
1835 | continue; | |
1836 | ||
1837 | /* | |
1838 | * The current mode switch would be exclusive, but | |
1839 | * another context is active ... refuse the switch. | |
1840 | */ | |
1841 | err = -EBUSY; | |
1842 | goto out; | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | /* success */ | |
1847 | iwl_legacy_teardown_interface(priv, vif, true); | |
1848 | vif->type = newtype; | |
ffd8c746 | 1849 | vif->p2p = newp2p; |
be663ab6 WYG |
1850 | err = iwl_legacy_setup_interface(priv, ctx); |
1851 | WARN_ON(err); | |
1852 | /* | |
1853 | * We've switched internally, but submitting to the | |
1854 | * device may have failed for some reason. Mask this | |
1855 | * error, because otherwise mac80211 will not switch | |
1856 | * (and set the interface type back) and we'll be | |
1857 | * out of sync with it. | |
1858 | */ | |
1859 | err = 0; | |
1860 | ||
1861 | out: | |
1862 | mutex_unlock(&priv->mutex); | |
1863 | return err; | |
1864 | } | |
1865 | EXPORT_SYMBOL(iwl_legacy_mac_change_interface); | |
1866 | ||
1867 | /* | |
1868 | * On every watchdog tick we check (latest) time stamp. If it does not | |
1869 | * change during timeout period and queue is not empty we reset firmware. | |
1870 | */ | |
1871 | static int iwl_legacy_check_stuck_queue(struct iwl_priv *priv, int cnt) | |
1872 | { | |
1873 | struct iwl_tx_queue *txq = &priv->txq[cnt]; | |
1874 | struct iwl_queue *q = &txq->q; | |
1875 | unsigned long timeout; | |
1876 | int ret; | |
1877 | ||
1878 | if (q->read_ptr == q->write_ptr) { | |
1879 | txq->time_stamp = jiffies; | |
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | timeout = txq->time_stamp + | |
1884 | msecs_to_jiffies(priv->cfg->base_params->wd_timeout); | |
1885 | ||
1886 | if (time_after(jiffies, timeout)) { | |
1887 | IWL_ERR(priv, "Queue %d stuck for %u ms.\n", | |
1888 | q->id, priv->cfg->base_params->wd_timeout); | |
1889 | ret = iwl_legacy_force_reset(priv, IWL_FW_RESET, false); | |
1890 | return (ret == -EAGAIN) ? 0 : 1; | |
1891 | } | |
1892 | ||
1893 | return 0; | |
1894 | } | |
1895 | ||
1896 | /* | |
1897 | * Making watchdog tick be a quarter of timeout assure we will | |
1898 | * discover the queue hung between timeout and 1.25*timeout | |
1899 | */ | |
1900 | #define IWL_WD_TICK(timeout) ((timeout) / 4) | |
1901 | ||
1902 | /* | |
1903 | * Watchdog timer callback, we check each tx queue for stuck, if if hung | |
1904 | * we reset the firmware. If everything is fine just rearm the timer. | |
1905 | */ | |
1906 | void iwl_legacy_bg_watchdog(unsigned long data) | |
1907 | { | |
1908 | struct iwl_priv *priv = (struct iwl_priv *)data; | |
1909 | int cnt; | |
1910 | unsigned long timeout; | |
1911 | ||
1912 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1913 | return; | |
1914 | ||
1915 | timeout = priv->cfg->base_params->wd_timeout; | |
1916 | if (timeout == 0) | |
1917 | return; | |
1918 | ||
1919 | /* monitor and check for stuck cmd queue */ | |
1920 | if (iwl_legacy_check_stuck_queue(priv, priv->cmd_queue)) | |
1921 | return; | |
1922 | ||
1923 | /* monitor and check for other stuck queues */ | |
1924 | if (iwl_legacy_is_any_associated(priv)) { | |
1925 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { | |
1926 | /* skip as we already checked the command queue */ | |
1927 | if (cnt == priv->cmd_queue) | |
1928 | continue; | |
1929 | if (iwl_legacy_check_stuck_queue(priv, cnt)) | |
1930 | return; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | mod_timer(&priv->watchdog, jiffies + | |
1935 | msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
1936 | } | |
1937 | EXPORT_SYMBOL(iwl_legacy_bg_watchdog); | |
1938 | ||
1939 | void iwl_legacy_setup_watchdog(struct iwl_priv *priv) | |
1940 | { | |
1941 | unsigned int timeout = priv->cfg->base_params->wd_timeout; | |
1942 | ||
1943 | if (timeout) | |
1944 | mod_timer(&priv->watchdog, | |
1945 | jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); | |
1946 | else | |
1947 | del_timer(&priv->watchdog); | |
1948 | } | |
1949 | EXPORT_SYMBOL(iwl_legacy_setup_watchdog); | |
1950 | ||
1951 | /* | |
1952 | * extended beacon time format | |
1953 | * time in usec will be changed into a 32-bit value in extended:internal format | |
1954 | * the extended part is the beacon counts | |
1955 | * the internal part is the time in usec within one beacon interval | |
1956 | */ | |
1957 | u32 | |
1958 | iwl_legacy_usecs_to_beacons(struct iwl_priv *priv, | |
1959 | u32 usec, u32 beacon_interval) | |
1960 | { | |
1961 | u32 quot; | |
1962 | u32 rem; | |
1963 | u32 interval = beacon_interval * TIME_UNIT; | |
1964 | ||
1965 | if (!interval || !usec) | |
1966 | return 0; | |
1967 | ||
1968 | quot = (usec / interval) & | |
1969 | (iwl_legacy_beacon_time_mask_high(priv, | |
1970 | priv->hw_params.beacon_time_tsf_bits) >> | |
1971 | priv->hw_params.beacon_time_tsf_bits); | |
1972 | rem = (usec % interval) & iwl_legacy_beacon_time_mask_low(priv, | |
1973 | priv->hw_params.beacon_time_tsf_bits); | |
1974 | ||
1975 | return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; | |
1976 | } | |
1977 | EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons); | |
1978 | ||
1979 | /* base is usually what we get from ucode with each received frame, | |
1980 | * the same as HW timer counter counting down | |
1981 | */ | |
1982 | __le32 iwl_legacy_add_beacon_time(struct iwl_priv *priv, u32 base, | |
1983 | u32 addon, u32 beacon_interval) | |
1984 | { | |
1985 | u32 base_low = base & iwl_legacy_beacon_time_mask_low(priv, | |
1986 | priv->hw_params.beacon_time_tsf_bits); | |
1987 | u32 addon_low = addon & iwl_legacy_beacon_time_mask_low(priv, | |
1988 | priv->hw_params.beacon_time_tsf_bits); | |
1989 | u32 interval = beacon_interval * TIME_UNIT; | |
1990 | u32 res = (base & iwl_legacy_beacon_time_mask_high(priv, | |
1991 | priv->hw_params.beacon_time_tsf_bits)) + | |
1992 | (addon & iwl_legacy_beacon_time_mask_high(priv, | |
1993 | priv->hw_params.beacon_time_tsf_bits)); | |
1994 | ||
1995 | if (base_low > addon_low) | |
1996 | res += base_low - addon_low; | |
1997 | else if (base_low < addon_low) { | |
1998 | res += interval + base_low - addon_low; | |
1999 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
2000 | } else | |
2001 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
2002 | ||
2003 | return cpu_to_le32(res); | |
2004 | } | |
2005 | EXPORT_SYMBOL(iwl_legacy_add_beacon_time); | |
2006 | ||
2007 | #ifdef CONFIG_PM | |
2008 | ||
2009 | int iwl_legacy_pci_suspend(struct device *device) | |
2010 | { | |
2011 | struct pci_dev *pdev = to_pci_dev(device); | |
2012 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
2013 | ||
2014 | /* | |
2015 | * This function is called when system goes into suspend state | |
2016 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function | |
2017 | * first but since iwl_mac_stop() has no knowledge of who the caller is, | |
2018 | * it will not call apm_ops.stop() to stop the DMA operation. | |
2019 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
2020 | */ | |
2021 | iwl_legacy_apm_stop(priv); | |
2022 | ||
2023 | return 0; | |
2024 | } | |
2025 | EXPORT_SYMBOL(iwl_legacy_pci_suspend); | |
2026 | ||
2027 | int iwl_legacy_pci_resume(struct device *device) | |
2028 | { | |
2029 | struct pci_dev *pdev = to_pci_dev(device); | |
2030 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
2031 | bool hw_rfkill = false; | |
2032 | ||
2033 | /* | |
2034 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
2035 | * PCI Tx retries from interfering with C3 CPU state. | |
2036 | */ | |
2037 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
2038 | ||
2039 | iwl_legacy_enable_interrupts(priv); | |
2040 | ||
2041 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & | |
2042 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) | |
2043 | hw_rfkill = true; | |
2044 | ||
2045 | if (hw_rfkill) | |
2046 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
2047 | else | |
2048 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
2049 | ||
2050 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); | |
2051 | ||
2052 | return 0; | |
2053 | } | |
2054 | EXPORT_SYMBOL(iwl_legacy_pci_resume); | |
2055 | ||
2056 | const struct dev_pm_ops iwl_legacy_pm_ops = { | |
2057 | .suspend = iwl_legacy_pci_suspend, | |
2058 | .resume = iwl_legacy_pci_resume, | |
2059 | .freeze = iwl_legacy_pci_suspend, | |
2060 | .thaw = iwl_legacy_pci_resume, | |
2061 | .poweroff = iwl_legacy_pci_suspend, | |
2062 | .restore = iwl_legacy_pci_resume, | |
2063 | }; | |
2064 | EXPORT_SYMBOL(iwl_legacy_pm_ops); | |
2065 | ||
2066 | #endif /* CONFIG_PM */ | |
2067 | ||
2068 | static void | |
2069 | iwl_legacy_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
2070 | { | |
2071 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
2072 | return; | |
2073 | ||
2074 | if (!ctx->is_active) | |
2075 | return; | |
2076 | ||
2077 | ctx->qos_data.def_qos_parm.qos_flags = 0; | |
2078 | ||
2079 | if (ctx->qos_data.qos_active) | |
2080 | ctx->qos_data.def_qos_parm.qos_flags |= | |
2081 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
2082 | ||
2083 | if (ctx->ht.enabled) | |
2084 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
2085 | ||
2086 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", | |
2087 | ctx->qos_data.qos_active, | |
2088 | ctx->qos_data.def_qos_parm.qos_flags); | |
2089 | ||
2090 | iwl_legacy_send_cmd_pdu_async(priv, ctx->qos_cmd, | |
2091 | sizeof(struct iwl_qosparam_cmd), | |
2092 | &ctx->qos_data.def_qos_parm, NULL); | |
2093 | } | |
2094 | ||
2095 | /** | |
2096 | * iwl_legacy_mac_config - mac80211 config callback | |
2097 | */ | |
2098 | int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed) | |
2099 | { | |
2100 | struct iwl_priv *priv = hw->priv; | |
2101 | const struct iwl_channel_info *ch_info; | |
2102 | struct ieee80211_conf *conf = &hw->conf; | |
2103 | struct ieee80211_channel *channel = conf->channel; | |
2104 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
2105 | struct iwl_rxon_context *ctx; | |
2106 | unsigned long flags = 0; | |
2107 | int ret = 0; | |
2108 | u16 ch; | |
2109 | int scan_active = 0; | |
2110 | bool ht_changed[NUM_IWL_RXON_CTX] = {}; | |
2111 | ||
2112 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2113 | return -EOPNOTSUPP; | |
2114 | ||
2115 | mutex_lock(&priv->mutex); | |
2116 | ||
2117 | IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", | |
2118 | channel->hw_value, changed); | |
2119 | ||
2120 | if (unlikely(!priv->cfg->mod_params->disable_hw_scan && | |
2121 | test_bit(STATUS_SCANNING, &priv->status))) { | |
2122 | scan_active = 1; | |
2123 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); | |
2124 | } | |
2125 | ||
2126 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | | |
2127 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2128 | /* mac80211 uses static for non-HT which is what we want */ | |
2129 | priv->current_ht_config.smps = conf->smps_mode; | |
2130 | ||
2131 | /* | |
2132 | * Recalculate chain counts. | |
2133 | * | |
2134 | * If monitor mode is enabled then mac80211 will | |
2135 | * set up the SM PS mode to OFF if an HT channel is | |
2136 | * configured. | |
2137 | */ | |
2138 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
2139 | for_each_context(priv, ctx) | |
2140 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
2141 | } | |
2142 | ||
2143 | /* during scanning mac80211 will delay channel setting until | |
2144 | * scan finish with changed = 0 | |
2145 | */ | |
2146 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2147 | if (scan_active) | |
2148 | goto set_ch_out; | |
2149 | ||
2150 | ch = channel->hw_value; | |
2151 | ch_info = iwl_legacy_get_channel_info(priv, channel->band, ch); | |
2152 | if (!iwl_legacy_is_channel_valid(ch_info)) { | |
2153 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
2154 | ret = -EINVAL; | |
2155 | goto set_ch_out; | |
2156 | } | |
2157 | ||
eb85de3f SG |
2158 | if (priv->iw_mode == NL80211_IFTYPE_ADHOC && |
2159 | !iwl_legacy_is_channel_ibss(ch_info)) { | |
2160 | IWL_DEBUG_MAC80211(priv, "leave - not IBSS channel\n"); | |
2161 | ret = -EINVAL; | |
2162 | goto set_ch_out; | |
2163 | } | |
2164 | ||
be663ab6 WYG |
2165 | spin_lock_irqsave(&priv->lock, flags); |
2166 | ||
2167 | for_each_context(priv, ctx) { | |
2168 | /* Configure HT40 channels */ | |
2169 | if (ctx->ht.enabled != conf_is_ht(conf)) { | |
2170 | ctx->ht.enabled = conf_is_ht(conf); | |
2171 | ht_changed[ctx->ctxid] = true; | |
2172 | } | |
2173 | if (ctx->ht.enabled) { | |
2174 | if (conf_is_ht40_minus(conf)) { | |
2175 | ctx->ht.extension_chan_offset = | |
2176 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2177 | ctx->ht.is_40mhz = true; | |
2178 | } else if (conf_is_ht40_plus(conf)) { | |
2179 | ctx->ht.extension_chan_offset = | |
2180 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2181 | ctx->ht.is_40mhz = true; | |
2182 | } else { | |
2183 | ctx->ht.extension_chan_offset = | |
2184 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
2185 | ctx->ht.is_40mhz = false; | |
2186 | } | |
2187 | } else | |
2188 | ctx->ht.is_40mhz = false; | |
2189 | ||
2190 | /* | |
2191 | * Default to no protection. Protection mode will | |
2192 | * later be set from BSS config in iwl_ht_conf | |
2193 | */ | |
2194 | ctx->ht.protection = | |
2195 | IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
2196 | ||
2197 | /* if we are switching from ht to 2.4 clear flags | |
2198 | * from any ht related info since 2.4 does not | |
2199 | * support ht */ | |
2200 | if ((le16_to_cpu(ctx->staging.channel) != ch)) | |
2201 | ctx->staging.flags = 0; | |
2202 | ||
2203 | iwl_legacy_set_rxon_channel(priv, channel, ctx); | |
2204 | iwl_legacy_set_rxon_ht(priv, ht_conf); | |
2205 | ||
2206 | iwl_legacy_set_flags_for_band(priv, ctx, channel->band, | |
2207 | ctx->vif); | |
2208 | } | |
2209 | ||
2210 | spin_unlock_irqrestore(&priv->lock, flags); | |
2211 | ||
2212 | if (priv->cfg->ops->legacy->update_bcast_stations) | |
2213 | ret = | |
2214 | priv->cfg->ops->legacy->update_bcast_stations(priv); | |
2215 | ||
2216 | set_ch_out: | |
2217 | /* The list of supported rates and rate mask can be different | |
2218 | * for each band; since the band may have changed, reset | |
2219 | * the rate mask to what mac80211 lists */ | |
2220 | iwl_legacy_set_rate(priv); | |
2221 | } | |
2222 | ||
2223 | if (changed & (IEEE80211_CONF_CHANGE_PS | | |
2224 | IEEE80211_CONF_CHANGE_IDLE)) { | |
2225 | ret = iwl_legacy_power_update_mode(priv, false); | |
2226 | if (ret) | |
2227 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); | |
2228 | } | |
2229 | ||
2230 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
2231 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
2232 | priv->tx_power_user_lmt, conf->power_level); | |
2233 | ||
2234 | iwl_legacy_set_tx_power(priv, conf->power_level, false); | |
2235 | } | |
2236 | ||
2237 | if (!iwl_legacy_is_ready(priv)) { | |
2238 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2239 | goto out; | |
2240 | } | |
2241 | ||
2242 | if (scan_active) | |
2243 | goto out; | |
2244 | ||
2245 | for_each_context(priv, ctx) { | |
2246 | if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging))) | |
2247 | iwl_legacy_commit_rxon(priv, ctx); | |
2248 | else | |
2249 | IWL_DEBUG_INFO(priv, | |
2250 | "Not re-sending same RXON configuration.\n"); | |
2251 | if (ht_changed[ctx->ctxid]) | |
2252 | iwl_legacy_update_qos(priv, ctx); | |
2253 | } | |
2254 | ||
2255 | out: | |
2256 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2257 | mutex_unlock(&priv->mutex); | |
2258 | return ret; | |
2259 | } | |
2260 | EXPORT_SYMBOL(iwl_legacy_mac_config); | |
2261 | ||
2262 | void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw) | |
2263 | { | |
2264 | struct iwl_priv *priv = hw->priv; | |
2265 | unsigned long flags; | |
2266 | /* IBSS can only be the IWL_RXON_CTX_BSS context */ | |
2267 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; | |
2268 | ||
2269 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2270 | return; | |
2271 | ||
2272 | mutex_lock(&priv->mutex); | |
2273 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
2274 | ||
2275 | spin_lock_irqsave(&priv->lock, flags); | |
2276 | memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); | |
2277 | spin_unlock_irqrestore(&priv->lock, flags); | |
2278 | ||
2279 | spin_lock_irqsave(&priv->lock, flags); | |
2280 | ||
2281 | /* new association get rid of ibss beacon skb */ | |
2282 | if (priv->beacon_skb) | |
2283 | dev_kfree_skb(priv->beacon_skb); | |
2284 | ||
2285 | priv->beacon_skb = NULL; | |
2286 | ||
2287 | priv->timestamp = 0; | |
2288 | ||
2289 | spin_unlock_irqrestore(&priv->lock, flags); | |
2290 | ||
2291 | iwl_legacy_scan_cancel_timeout(priv, 100); | |
2292 | if (!iwl_legacy_is_ready_rf(priv)) { | |
2293 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2294 | mutex_unlock(&priv->mutex); | |
2295 | return; | |
2296 | } | |
2297 | ||
2298 | /* we are restarting association process | |
2299 | * clear RXON_FILTER_ASSOC_MSK bit | |
2300 | */ | |
2301 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2302 | iwl_legacy_commit_rxon(priv, ctx); | |
2303 | ||
2304 | iwl_legacy_set_rate(priv); | |
2305 | ||
2306 | mutex_unlock(&priv->mutex); | |
2307 | ||
2308 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2309 | } | |
2310 | EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf); | |
2311 | ||
2312 | static void iwl_legacy_ht_conf(struct iwl_priv *priv, | |
2313 | struct ieee80211_vif *vif) | |
2314 | { | |
2315 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
2316 | struct ieee80211_sta *sta; | |
2317 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; | |
2318 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2319 | ||
2320 | IWL_DEBUG_ASSOC(priv, "enter:\n"); | |
2321 | ||
2322 | if (!ctx->ht.enabled) | |
2323 | return; | |
2324 | ||
2325 | ctx->ht.protection = | |
2326 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; | |
2327 | ctx->ht.non_gf_sta_present = | |
2328 | !!(bss_conf->ht_operation_mode & | |
2329 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
2330 | ||
2331 | ht_conf->single_chain_sufficient = false; | |
2332 | ||
2333 | switch (vif->type) { | |
2334 | case NL80211_IFTYPE_STATION: | |
2335 | rcu_read_lock(); | |
2336 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
2337 | if (sta) { | |
2338 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; | |
2339 | int maxstreams; | |
2340 | ||
2341 | maxstreams = (ht_cap->mcs.tx_params & | |
2342 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
2343 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
2344 | maxstreams += 1; | |
2345 | ||
2346 | if ((ht_cap->mcs.rx_mask[1] == 0) && | |
2347 | (ht_cap->mcs.rx_mask[2] == 0)) | |
2348 | ht_conf->single_chain_sufficient = true; | |
2349 | if (maxstreams <= 1) | |
2350 | ht_conf->single_chain_sufficient = true; | |
2351 | } else { | |
2352 | /* | |
2353 | * If at all, this can only happen through a race | |
2354 | * when the AP disconnects us while we're still | |
2355 | * setting up the connection, in that case mac80211 | |
2356 | * will soon tell us about that. | |
2357 | */ | |
2358 | ht_conf->single_chain_sufficient = true; | |
2359 | } | |
2360 | rcu_read_unlock(); | |
2361 | break; | |
2362 | case NL80211_IFTYPE_ADHOC: | |
2363 | ht_conf->single_chain_sufficient = true; | |
2364 | break; | |
2365 | default: | |
2366 | break; | |
2367 | } | |
2368 | ||
2369 | IWL_DEBUG_ASSOC(priv, "leave\n"); | |
2370 | } | |
2371 | ||
2372 | static inline void iwl_legacy_set_no_assoc(struct iwl_priv *priv, | |
2373 | struct ieee80211_vif *vif) | |
2374 | { | |
2375 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2376 | ||
2377 | /* | |
2378 | * inform the ucode that there is no longer an | |
2379 | * association and that no more packets should be | |
2380 | * sent | |
2381 | */ | |
2382 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2383 | ctx->staging.assoc_id = 0; | |
2384 | iwl_legacy_commit_rxon(priv, ctx); | |
2385 | } | |
2386 | ||
2387 | static void iwl_legacy_beacon_update(struct ieee80211_hw *hw, | |
2388 | struct ieee80211_vif *vif) | |
2389 | { | |
2390 | struct iwl_priv *priv = hw->priv; | |
2391 | unsigned long flags; | |
2392 | __le64 timestamp; | |
2393 | struct sk_buff *skb = ieee80211_beacon_get(hw, vif); | |
2394 | ||
2395 | if (!skb) | |
2396 | return; | |
2397 | ||
2398 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
2399 | ||
2400 | lockdep_assert_held(&priv->mutex); | |
2401 | ||
2402 | if (!priv->beacon_ctx) { | |
2403 | IWL_ERR(priv, "update beacon but no beacon context!\n"); | |
2404 | dev_kfree_skb(skb); | |
2405 | return; | |
2406 | } | |
2407 | ||
2408 | spin_lock_irqsave(&priv->lock, flags); | |
2409 | ||
2410 | if (priv->beacon_skb) | |
2411 | dev_kfree_skb(priv->beacon_skb); | |
2412 | ||
2413 | priv->beacon_skb = skb; | |
2414 | ||
2415 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; | |
2416 | priv->timestamp = le64_to_cpu(timestamp); | |
2417 | ||
2418 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2419 | spin_unlock_irqrestore(&priv->lock, flags); | |
2420 | ||
2421 | if (!iwl_legacy_is_ready_rf(priv)) { | |
2422 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
2423 | return; | |
2424 | } | |
2425 | ||
2426 | priv->cfg->ops->legacy->post_associate(priv); | |
2427 | } | |
2428 | ||
2429 | void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, | |
2430 | struct ieee80211_vif *vif, | |
2431 | struct ieee80211_bss_conf *bss_conf, | |
2432 | u32 changes) | |
2433 | { | |
2434 | struct iwl_priv *priv = hw->priv; | |
2435 | struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); | |
2436 | int ret; | |
2437 | ||
2438 | if (WARN_ON(!priv->cfg->ops->legacy)) | |
2439 | return; | |
2440 | ||
2441 | IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); | |
2442 | ||
2443 | if (!iwl_legacy_is_alive(priv)) | |
2444 | return; | |
2445 | ||
2446 | mutex_lock(&priv->mutex); | |
2447 | ||
2448 | if (changes & BSS_CHANGED_QOS) { | |
2449 | unsigned long flags; | |
2450 | ||
2451 | spin_lock_irqsave(&priv->lock, flags); | |
2452 | ctx->qos_data.qos_active = bss_conf->qos; | |
2453 | iwl_legacy_update_qos(priv, ctx); | |
2454 | spin_unlock_irqrestore(&priv->lock, flags); | |
2455 | } | |
2456 | ||
2457 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
2458 | /* | |
2459 | * the add_interface code must make sure we only ever | |
2460 | * have a single interface that could be beaconing at | |
2461 | * any time. | |
2462 | */ | |
2463 | if (vif->bss_conf.enable_beacon) | |
2464 | priv->beacon_ctx = ctx; | |
2465 | else | |
2466 | priv->beacon_ctx = NULL; | |
2467 | } | |
2468 | ||
2469 | if (changes & BSS_CHANGED_BSSID) { | |
2470 | IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); | |
2471 | ||
2472 | /* | |
2473 | * If there is currently a HW scan going on in the | |
2474 | * background then we need to cancel it else the RXON | |
2475 | * below/in post_associate will fail. | |
2476 | */ | |
2477 | if (iwl_legacy_scan_cancel_timeout(priv, 100)) { | |
2478 | IWL_WARN(priv, | |
2479 | "Aborted scan still in progress after 100ms\n"); | |
2480 | IWL_DEBUG_MAC80211(priv, | |
2481 | "leaving - scan abort failed.\n"); | |
2482 | mutex_unlock(&priv->mutex); | |
2483 | return; | |
2484 | } | |
2485 | ||
2486 | /* mac80211 only sets assoc when in STATION mode */ | |
2487 | if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { | |
2488 | memcpy(ctx->staging.bssid_addr, | |
2489 | bss_conf->bssid, ETH_ALEN); | |
2490 | ||
2491 | /* currently needed in a few places */ | |
2492 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
2493 | } else { | |
2494 | ctx->staging.filter_flags &= | |
2495 | ~RXON_FILTER_ASSOC_MSK; | |
2496 | } | |
2497 | ||
2498 | } | |
2499 | ||
2500 | /* | |
2501 | * This needs to be after setting the BSSID in case | |
2502 | * mac80211 decides to do both changes at once because | |
2503 | * it will invoke post_associate. | |
2504 | */ | |
2505 | if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) | |
2506 | iwl_legacy_beacon_update(hw, vif); | |
2507 | ||
2508 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { | |
2509 | IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", | |
2510 | bss_conf->use_short_preamble); | |
2511 | if (bss_conf->use_short_preamble) | |
2512 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
2513 | else | |
2514 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
2515 | } | |
2516 | ||
2517 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { | |
2518 | IWL_DEBUG_MAC80211(priv, | |
2519 | "ERP_CTS %d\n", bss_conf->use_cts_prot); | |
2520 | if (bss_conf->use_cts_prot && | |
2521 | (priv->band != IEEE80211_BAND_5GHZ)) | |
2522 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
2523 | else | |
2524 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
2525 | if (bss_conf->use_cts_prot) | |
2526 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
2527 | else | |
2528 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; | |
2529 | } | |
2530 | ||
2531 | if (changes & BSS_CHANGED_BASIC_RATES) { | |
2532 | /* XXX use this information | |
2533 | * | |
2534 | * To do that, remove code from iwl_legacy_set_rate() and put something | |
2535 | * like this here: | |
2536 | * | |
2537 | if (A-band) | |
2538 | ctx->staging.ofdm_basic_rates = | |
2539 | bss_conf->basic_rates; | |
2540 | else | |
2541 | ctx->staging.ofdm_basic_rates = | |
2542 | bss_conf->basic_rates >> 4; | |
2543 | ctx->staging.cck_basic_rates = | |
2544 | bss_conf->basic_rates & 0xF; | |
2545 | */ | |
2546 | } | |
2547 | ||
2548 | if (changes & BSS_CHANGED_HT) { | |
2549 | iwl_legacy_ht_conf(priv, vif); | |
2550 | ||
2551 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
2552 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
2553 | } | |
2554 | ||
2555 | if (changes & BSS_CHANGED_ASSOC) { | |
2556 | IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); | |
2557 | if (bss_conf->assoc) { | |
2558 | priv->timestamp = bss_conf->timestamp; | |
2559 | ||
2560 | if (!iwl_legacy_is_rfkill(priv)) | |
2561 | priv->cfg->ops->legacy->post_associate(priv); | |
2562 | } else | |
2563 | iwl_legacy_set_no_assoc(priv, vif); | |
2564 | } | |
2565 | ||
2566 | if (changes && iwl_legacy_is_associated_ctx(ctx) && bss_conf->aid) { | |
2567 | IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", | |
2568 | changes); | |
2569 | ret = iwl_legacy_send_rxon_assoc(priv, ctx); | |
2570 | if (!ret) { | |
2571 | /* Sync active_rxon with latest change. */ | |
2572 | memcpy((void *)&ctx->active, | |
2573 | &ctx->staging, | |
2574 | sizeof(struct iwl_legacy_rxon_cmd)); | |
2575 | } | |
2576 | } | |
2577 | ||
2578 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
2579 | if (vif->bss_conf.enable_beacon) { | |
2580 | memcpy(ctx->staging.bssid_addr, | |
2581 | bss_conf->bssid, ETH_ALEN); | |
2582 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
2583 | priv->cfg->ops->legacy->config_ap(priv); | |
2584 | } else | |
2585 | iwl_legacy_set_no_assoc(priv, vif); | |
2586 | } | |
2587 | ||
2588 | if (changes & BSS_CHANGED_IBSS) { | |
2589 | ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif, | |
2590 | bss_conf->ibss_joined); | |
2591 | if (ret) | |
2592 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
2593 | bss_conf->ibss_joined ? "add" : "remove", | |
2594 | bss_conf->bssid); | |
2595 | } | |
2596 | ||
2597 | mutex_unlock(&priv->mutex); | |
2598 | ||
2599 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2600 | } | |
2601 | EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed); | |
2602 | ||
2603 | irqreturn_t iwl_legacy_isr(int irq, void *data) | |
2604 | { | |
2605 | struct iwl_priv *priv = data; | |
2606 | u32 inta, inta_mask; | |
2607 | u32 inta_fh; | |
2608 | unsigned long flags; | |
2609 | if (!priv) | |
2610 | return IRQ_NONE; | |
2611 | ||
2612 | spin_lock_irqsave(&priv->lock, flags); | |
2613 | ||
2614 | /* Disable (but don't clear!) interrupts here to avoid | |
2615 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
2616 | * If we have something to service, the tasklet will re-enable ints. | |
2617 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
2618 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ | |
2619 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
2620 | ||
2621 | /* Discover which interrupts are active/pending */ | |
2622 | inta = iwl_read32(priv, CSR_INT); | |
2623 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
2624 | ||
2625 | /* Ignore interrupt if there's nothing in NIC to service. | |
2626 | * This may be due to IRQ shared with another device, | |
2627 | * or due to sporadic interrupts thrown from our NIC. */ | |
2628 | if (!inta && !inta_fh) { | |
2629 | IWL_DEBUG_ISR(priv, | |
2630 | "Ignore interrupt, inta == 0, inta_fh == 0\n"); | |
2631 | goto none; | |
2632 | } | |
2633 | ||
2634 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { | |
2635 | /* Hardware disappeared. It might have already raised | |
2636 | * an interrupt */ | |
2637 | IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); | |
2638 | goto unplugged; | |
2639 | } | |
2640 | ||
2641 | IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
2642 | inta, inta_mask, inta_fh); | |
2643 | ||
2644 | inta &= ~CSR_INT_BIT_SCD; | |
2645 | ||
2646 | /* iwl_irq_tasklet() will service interrupts and re-enable them */ | |
2647 | if (likely(inta || inta_fh)) | |
2648 | tasklet_schedule(&priv->irq_tasklet); | |
2649 | ||
2650 | unplugged: | |
2651 | spin_unlock_irqrestore(&priv->lock, flags); | |
2652 | return IRQ_HANDLED; | |
2653 | ||
2654 | none: | |
2655 | /* re-enable interrupts here since we don't have anything to service. */ | |
2656 | /* only Re-enable if diabled by irq */ | |
2657 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) | |
2658 | iwl_legacy_enable_interrupts(priv); | |
2659 | spin_unlock_irqrestore(&priv->lock, flags); | |
2660 | return IRQ_NONE; | |
2661 | } | |
2662 | EXPORT_SYMBOL(iwl_legacy_isr); | |
2663 | ||
2664 | /* | |
2665 | * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this | |
2666 | * function. | |
2667 | */ | |
2668 | void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, | |
2669 | struct ieee80211_tx_info *info, | |
2670 | __le16 fc, __le32 *tx_flags) | |
2671 | { | |
2672 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
2673 | *tx_flags |= TX_CMD_FLG_RTS_MSK; | |
2674 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
2675 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
2676 | ||
2677 | if (!ieee80211_is_mgmt(fc)) | |
2678 | return; | |
2679 | ||
2680 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
2681 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
2682 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
2683 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
2684 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
2685 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2686 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
2687 | break; | |
2688 | } | |
2689 | } else if (info->control.rates[0].flags & | |
2690 | IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
2691 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2692 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
2693 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
2694 | } | |
2695 | } | |
2696 | EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection); |