Commit | Line | Data |
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df48c323 | 1 | /****************************************************************************** |
df48c323 TW |
2 | * |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
1f447808 | 5 | * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. |
df48c323 TW |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
df48c323 TW |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | *****************************************************************************/ | |
28 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/module.h> | |
8ccde88a | 31 | #include <linux/etherdevice.h> |
d43c36dc | 32 | #include <linux/sched.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1d0a082d | 34 | #include <net/mac80211.h> |
df48c323 | 35 | |
6bc913bd | 36 | #include "iwl-eeprom.h" |
3e0d4cb1 | 37 | #include "iwl-dev.h" /* FIXME: remove */ |
19335774 | 38 | #include "iwl-debug.h" |
df48c323 | 39 | #include "iwl-core.h" |
b661c819 | 40 | #include "iwl-io.h" |
5da4b55f | 41 | #include "iwl-power.h" |
83dde8c9 | 42 | #include "iwl-sta.h" |
ef850d7c | 43 | #include "iwl-helpers.h" |
df48c323 | 44 | |
1d0a082d | 45 | |
df48c323 TW |
46 | MODULE_DESCRIPTION("iwl core"); |
47 | MODULE_VERSION(IWLWIFI_VERSION); | |
a7b75207 | 48 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
712b6cf5 | 49 | MODULE_LICENSE("GPL"); |
df48c323 | 50 | |
06702a73 WYG |
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 | */ | |
67 | static bool bt_coex_active = true; | |
68 | module_param(bt_coex_active, bool, S_IRUGO); | |
6c69d121 | 69 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); |
06702a73 | 70 | |
c7de35cd RR |
71 | #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ |
72 | [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ | |
73 | IWL_RATE_SISO_##s##M_PLCP, \ | |
74 | IWL_RATE_MIMO2_##s##M_PLCP,\ | |
75 | IWL_RATE_MIMO3_##s##M_PLCP,\ | |
76 | IWL_RATE_##r##M_IEEE, \ | |
77 | IWL_RATE_##ip##M_INDEX, \ | |
78 | IWL_RATE_##in##M_INDEX, \ | |
79 | IWL_RATE_##rp##M_INDEX, \ | |
80 | IWL_RATE_##rn##M_INDEX, \ | |
81 | IWL_RATE_##pp##M_INDEX, \ | |
82 | IWL_RATE_##np##M_INDEX } | |
83 | ||
a562a9dd RC |
84 | u32 iwl_debug_level; |
85 | EXPORT_SYMBOL(iwl_debug_level); | |
86 | ||
c7de35cd RR |
87 | /* |
88 | * Parameter order: | |
89 | * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate | |
90 | * | |
91 | * If there isn't a valid next or previous rate then INV is used which | |
92 | * maps to IWL_RATE_INVALID | |
93 | * | |
94 | */ | |
1826dcc0 | 95 | const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = { |
c7de35cd RR |
96 | IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ |
97 | IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ | |
98 | IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ | |
99 | IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ | |
100 | IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ | |
101 | IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ | |
102 | IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ | |
103 | IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ | |
104 | IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ | |
105 | IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ | |
106 | IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ | |
107 | IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ | |
108 | IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ | |
109 | /* FIXME:RS: ^^ should be INV (legacy) */ | |
110 | }; | |
1826dcc0 | 111 | EXPORT_SYMBOL(iwl_rates); |
c7de35cd | 112 | |
e7d326ac TW |
113 | int iwl_hwrate_to_plcp_idx(u32 rate_n_flags) |
114 | { | |
115 | int idx = 0; | |
116 | ||
117 | /* HT rate format */ | |
118 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
119 | idx = (rate_n_flags & 0xff); | |
120 | ||
60d32215 DH |
121 | if (idx >= IWL_RATE_MIMO3_6M_PLCP) |
122 | idx = idx - IWL_RATE_MIMO3_6M_PLCP; | |
123 | else if (idx >= IWL_RATE_MIMO2_6M_PLCP) | |
e7d326ac TW |
124 | idx = idx - IWL_RATE_MIMO2_6M_PLCP; |
125 | ||
126 | idx += IWL_FIRST_OFDM_RATE; | |
127 | /* skip 9M not supported in ht*/ | |
128 | if (idx >= IWL_RATE_9M_INDEX) | |
129 | idx += 1; | |
130 | if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE)) | |
131 | return idx; | |
132 | ||
133 | /* legacy rate format, search for match in table */ | |
134 | } else { | |
135 | for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++) | |
136 | if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) | |
137 | return idx; | |
138 | } | |
139 | ||
140 | return -1; | |
141 | } | |
142 | EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx); | |
143 | ||
0e1654fa | 144 | u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) |
76eff18b TW |
145 | { |
146 | int i; | |
147 | u8 ind = ant; | |
0e1654fa | 148 | |
76eff18b TW |
149 | for (i = 0; i < RATE_ANT_NUM - 1; i++) { |
150 | ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; | |
0e1654fa | 151 | if (valid & BIT(ind)) |
76eff18b TW |
152 | return ind; |
153 | } | |
154 | return ant; | |
155 | } | |
47ff65c4 | 156 | EXPORT_SYMBOL(iwl_toggle_tx_ant); |
57bd1bea TW |
157 | |
158 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
159 | EXPORT_SYMBOL(iwl_bcast_addr); | |
160 | ||
161 | ||
1d0a082d AK |
162 | /* This function both allocates and initializes hw and priv. */ |
163 | struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg, | |
164 | struct ieee80211_ops *hw_ops) | |
165 | { | |
166 | struct iwl_priv *priv; | |
167 | ||
168 | /* mac80211 allocates memory for this device instance, including | |
169 | * space for this driver's private structure */ | |
170 | struct ieee80211_hw *hw = | |
171 | ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops); | |
172 | if (hw == NULL) { | |
c96c31e4 | 173 | pr_err("%s: Can not allocate network device\n", |
a3139c59 | 174 | cfg->name); |
1d0a082d AK |
175 | goto out; |
176 | } | |
177 | ||
178 | priv = hw->priv; | |
179 | priv->hw = hw; | |
180 | ||
181 | out: | |
182 | return hw; | |
183 | } | |
184 | EXPORT_SYMBOL(iwl_alloc_all); | |
185 | ||
b661c819 TW |
186 | void iwl_hw_detect(struct iwl_priv *priv) |
187 | { | |
188 | priv->hw_rev = _iwl_read32(priv, CSR_HW_REV); | |
189 | priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG); | |
190 | pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id); | |
191 | } | |
192 | EXPORT_SYMBOL(iwl_hw_detect); | |
193 | ||
14d2aac5 AK |
194 | /* |
195 | * QoS support | |
196 | */ | |
e61146e3 | 197 | static void iwl_update_qos(struct iwl_priv *priv) |
14d2aac5 AK |
198 | { |
199 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
200 | return; | |
201 | ||
202 | priv->qos_data.def_qos_parm.qos_flags = 0; | |
203 | ||
14d2aac5 AK |
204 | if (priv->qos_data.qos_active) |
205 | priv->qos_data.def_qos_parm.qos_flags |= | |
206 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
207 | ||
208 | if (priv->current_ht_config.is_ht) | |
209 | priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
210 | ||
e61146e3 SG |
211 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
212 | priv->qos_data.qos_active, | |
213 | priv->qos_data.def_qos_parm.qos_flags); | |
14d2aac5 | 214 | |
e61146e3 SG |
215 | iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM, |
216 | sizeof(struct iwl_qosparam_cmd), | |
217 | &priv->qos_data.def_qos_parm, NULL); | |
14d2aac5 | 218 | } |
c7de35cd | 219 | |
d9fe60de JB |
220 | #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
221 | #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ | |
c7de35cd | 222 | static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, |
d9fe60de | 223 | struct ieee80211_sta_ht_cap *ht_info, |
c7de35cd RR |
224 | enum ieee80211_band band) |
225 | { | |
39130df3 RR |
226 | u16 max_bit_rate = 0; |
227 | u8 rx_chains_num = priv->hw_params.rx_chains_num; | |
228 | u8 tx_chains_num = priv->hw_params.tx_chains_num; | |
229 | ||
c7de35cd | 230 | ht_info->cap = 0; |
d9fe60de | 231 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
c7de35cd | 232 | |
d9fe60de | 233 | ht_info->ht_supported = true; |
c7de35cd | 234 | |
b261793d DH |
235 | if (priv->cfg->ht_greenfield_support) |
236 | ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; | |
d9fe60de | 237 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
39130df3 | 238 | max_bit_rate = MAX_BIT_RATE_20_MHZ; |
7aafef1c | 239 | if (priv->hw_params.ht40_channel & BIT(band)) { |
d9fe60de JB |
240 | ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
241 | ht_info->cap |= IEEE80211_HT_CAP_SGI_40; | |
242 | ht_info->mcs.rx_mask[4] = 0x01; | |
39130df3 | 243 | max_bit_rate = MAX_BIT_RATE_40_MHZ; |
c7de35cd | 244 | } |
c7de35cd RR |
245 | |
246 | if (priv->cfg->mod_params->amsdu_size_8K) | |
d9fe60de | 247 | ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
c7de35cd RR |
248 | |
249 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; | |
250 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; | |
251 | ||
d9fe60de | 252 | ht_info->mcs.rx_mask[0] = 0xFF; |
39130df3 | 253 | if (rx_chains_num >= 2) |
d9fe60de | 254 | ht_info->mcs.rx_mask[1] = 0xFF; |
39130df3 | 255 | if (rx_chains_num >= 3) |
d9fe60de | 256 | ht_info->mcs.rx_mask[2] = 0xFF; |
39130df3 RR |
257 | |
258 | /* Highest supported Rx data rate */ | |
259 | max_bit_rate *= rx_chains_num; | |
d9fe60de JB |
260 | WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); |
261 | ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); | |
39130df3 RR |
262 | |
263 | /* Tx MCS capabilities */ | |
d9fe60de | 264 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
39130df3 | 265 | if (tx_chains_num != rx_chains_num) { |
d9fe60de JB |
266 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
267 | ht_info->mcs.tx_params |= ((tx_chains_num - 1) << | |
268 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
39130df3 | 269 | } |
c7de35cd | 270 | } |
c7de35cd | 271 | |
c7de35cd RR |
272 | /** |
273 | * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom | |
274 | */ | |
534166de | 275 | int iwlcore_init_geos(struct iwl_priv *priv) |
c7de35cd RR |
276 | { |
277 | struct iwl_channel_info *ch; | |
278 | struct ieee80211_supported_band *sband; | |
279 | struct ieee80211_channel *channels; | |
280 | struct ieee80211_channel *geo_ch; | |
281 | struct ieee80211_rate *rates; | |
282 | int i = 0; | |
283 | ||
284 | if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || | |
285 | priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
e1623446 | 286 | IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); |
c7de35cd RR |
287 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
288 | return 0; | |
289 | } | |
290 | ||
291 | channels = kzalloc(sizeof(struct ieee80211_channel) * | |
292 | priv->channel_count, GFP_KERNEL); | |
293 | if (!channels) | |
294 | return -ENOMEM; | |
295 | ||
5027309b | 296 | rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), |
c7de35cd RR |
297 | GFP_KERNEL); |
298 | if (!rates) { | |
299 | kfree(channels); | |
300 | return -ENOMEM; | |
301 | } | |
302 | ||
303 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
304 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
305 | sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; | |
306 | /* just OFDM */ | |
307 | sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; | |
5027309b | 308 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; |
c7de35cd | 309 | |
49779293 | 310 | if (priv->cfg->sku & IWL_SKU_N) |
d9fe60de | 311 | iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
49779293 | 312 | IEEE80211_BAND_5GHZ); |
c7de35cd RR |
313 | |
314 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
315 | sband->channels = channels; | |
316 | /* OFDM & CCK */ | |
317 | sband->bitrates = rates; | |
5027309b | 318 | sband->n_bitrates = IWL_RATE_COUNT_LEGACY; |
c7de35cd | 319 | |
49779293 | 320 | if (priv->cfg->sku & IWL_SKU_N) |
d9fe60de | 321 | iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
49779293 | 322 | IEEE80211_BAND_2GHZ); |
c7de35cd RR |
323 | |
324 | priv->ieee_channels = channels; | |
325 | priv->ieee_rates = rates; | |
326 | ||
c7de35cd RR |
327 | for (i = 0; i < priv->channel_count; i++) { |
328 | ch = &priv->channel_info[i]; | |
329 | ||
330 | /* FIXME: might be removed if scan is OK */ | |
331 | if (!is_channel_valid(ch)) | |
332 | continue; | |
333 | ||
334 | if (is_channel_a_band(ch)) | |
335 | sband = &priv->bands[IEEE80211_BAND_5GHZ]; | |
336 | else | |
337 | sband = &priv->bands[IEEE80211_BAND_2GHZ]; | |
338 | ||
339 | geo_ch = &sband->channels[sband->n_channels++]; | |
340 | ||
341 | geo_ch->center_freq = | |
342 | ieee80211_channel_to_frequency(ch->channel); | |
343 | geo_ch->max_power = ch->max_power_avg; | |
344 | geo_ch->max_antenna_gain = 0xff; | |
345 | geo_ch->hw_value = ch->channel; | |
346 | ||
347 | if (is_channel_valid(ch)) { | |
348 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) | |
349 | geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; | |
350 | ||
351 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
352 | geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
353 | ||
354 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
355 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
356 | ||
7aafef1c | 357 | geo_ch->flags |= ch->ht40_extension_channel; |
4d38c2e8 | 358 | |
dc1b0973 WYG |
359 | if (ch->max_power_avg > priv->tx_power_device_lmt) |
360 | priv->tx_power_device_lmt = ch->max_power_avg; | |
c7de35cd RR |
361 | } else { |
362 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
363 | } | |
364 | ||
e1623446 | 365 | IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", |
c7de35cd RR |
366 | ch->channel, geo_ch->center_freq, |
367 | is_channel_a_band(ch) ? "5.2" : "2.4", | |
368 | geo_ch->flags & IEEE80211_CHAN_DISABLED ? | |
369 | "restricted" : "valid", | |
370 | geo_ch->flags); | |
371 | } | |
372 | ||
373 | if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && | |
374 | priv->cfg->sku & IWL_SKU_A) { | |
978785a3 TW |
375 | IWL_INFO(priv, "Incorrectly detected BG card as ABG. " |
376 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", | |
a3139c59 SO |
377 | priv->pci_dev->device, |
378 | priv->pci_dev->subsystem_device); | |
c7de35cd RR |
379 | priv->cfg->sku &= ~IWL_SKU_A; |
380 | } | |
381 | ||
978785a3 | 382 | IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
a3139c59 SO |
383 | priv->bands[IEEE80211_BAND_2GHZ].n_channels, |
384 | priv->bands[IEEE80211_BAND_5GHZ].n_channels); | |
c7de35cd RR |
385 | |
386 | set_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
387 | ||
388 | return 0; | |
389 | } | |
534166de | 390 | EXPORT_SYMBOL(iwlcore_init_geos); |
c7de35cd RR |
391 | |
392 | /* | |
393 | * iwlcore_free_geos - undo allocations in iwlcore_init_geos | |
394 | */ | |
534166de | 395 | void iwlcore_free_geos(struct iwl_priv *priv) |
c7de35cd RR |
396 | { |
397 | kfree(priv->ieee_channels); | |
398 | kfree(priv->ieee_rates); | |
399 | clear_bit(STATUS_GEO_CONFIGURED, &priv->status); | |
400 | } | |
534166de | 401 | EXPORT_SYMBOL(iwlcore_free_geos); |
c7de35cd | 402 | |
37dc70fe | 403 | /* |
94597ab2 | 404 | * iwlcore_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
37dc70fe AK |
405 | * function. |
406 | */ | |
94597ab2 JB |
407 | void iwlcore_tx_cmd_protection(struct iwl_priv *priv, |
408 | struct ieee80211_tx_info *info, | |
409 | __le16 fc, __le32 *tx_flags) | |
37dc70fe AK |
410 | { |
411 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
412 | *tx_flags |= TX_CMD_FLG_RTS_MSK; | |
413 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
94597ab2 JB |
414 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
415 | ||
416 | if (!ieee80211_is_mgmt(fc)) | |
417 | return; | |
418 | ||
419 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
420 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
421 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
422 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
423 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
424 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
425 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
426 | break; | |
427 | } | |
37dc70fe AK |
428 | } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
429 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
430 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
94597ab2 | 431 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
37dc70fe AK |
432 | } |
433 | } | |
94597ab2 JB |
434 | EXPORT_SYMBOL(iwlcore_tx_cmd_protection); |
435 | ||
37dc70fe | 436 | |
28a6b07a | 437 | static bool is_single_rx_stream(struct iwl_priv *priv) |
c7de35cd | 438 | { |
ba37a3d0 | 439 | return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || |
02bb1bea | 440 | priv->current_ht_config.single_chain_sufficient; |
c7de35cd | 441 | } |
963f5517 | 442 | |
47c5196e TW |
443 | static u8 iwl_is_channel_extension(struct iwl_priv *priv, |
444 | enum ieee80211_band band, | |
445 | u16 channel, u8 extension_chan_offset) | |
446 | { | |
447 | const struct iwl_channel_info *ch_info; | |
448 | ||
449 | ch_info = iwl_get_channel_info(priv, band, channel); | |
450 | if (!is_channel_valid(ch_info)) | |
451 | return 0; | |
452 | ||
d9fe60de | 453 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) |
7aafef1c | 454 | return !(ch_info->ht40_extension_channel & |
689da1b3 | 455 | IEEE80211_CHAN_NO_HT40PLUS); |
d9fe60de | 456 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
7aafef1c | 457 | return !(ch_info->ht40_extension_channel & |
689da1b3 | 458 | IEEE80211_CHAN_NO_HT40MINUS); |
47c5196e TW |
459 | |
460 | return 0; | |
461 | } | |
462 | ||
7aafef1c | 463 | u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
d9fe60de | 464 | struct ieee80211_sta_ht_cap *sta_ht_inf) |
47c5196e | 465 | { |
fad95bf5 | 466 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
47c5196e | 467 | |
fad95bf5 | 468 | if (!ht_conf->is_ht || !ht_conf->is_40mhz) |
47c5196e TW |
469 | return 0; |
470 | ||
a2b0f02e WYG |
471 | /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
472 | * the bit will not set if it is pure 40MHz case | |
473 | */ | |
47c5196e | 474 | if (sta_ht_inf) { |
a2b0f02e | 475 | if (!sta_ht_inf->ht_supported) |
47c5196e TW |
476 | return 0; |
477 | } | |
d73e4923 | 478 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1e4247d4 WYG |
479 | if (priv->disable_ht40) |
480 | return 0; | |
481 | #endif | |
611d3eb7 WYG |
482 | return iwl_is_channel_extension(priv, priv->band, |
483 | le16_to_cpu(priv->staging_rxon.channel), | |
fad95bf5 | 484 | ht_conf->extension_chan_offset); |
47c5196e | 485 | } |
7aafef1c | 486 | EXPORT_SYMBOL(iwl_is_ht40_tx_allowed); |
47c5196e | 487 | |
2c2f3b33 TW |
488 | static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) |
489 | { | |
490 | u16 new_val = 0; | |
491 | u16 beacon_factor = 0; | |
492 | ||
493 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
494 | new_val = beacon_val / beacon_factor; | |
495 | ||
496 | if (!new_val) | |
497 | new_val = max_beacon_val; | |
498 | ||
499 | return new_val; | |
500 | } | |
501 | ||
1dda6d28 | 502 | void iwl_setup_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif) |
2c2f3b33 TW |
503 | { |
504 | u64 tsf; | |
505 | s32 interval_tm, rem; | |
506 | unsigned long flags; | |
507 | struct ieee80211_conf *conf = NULL; | |
508 | u16 beacon_int; | |
509 | ||
510 | conf = ieee80211_get_hw_conf(priv->hw); | |
511 | ||
512 | spin_lock_irqsave(&priv->lock, flags); | |
513 | priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp); | |
514 | priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
515 | ||
1dda6d28 | 516 | beacon_int = vif->bss_conf.beacon_int; |
2c2f3b33 | 517 | |
1dda6d28 | 518 | if (vif->type == NL80211_IFTYPE_ADHOC) { |
2c2f3b33 TW |
519 | /* TODO: we need to get atim_window from upper stack |
520 | * for now we set to 0 */ | |
521 | priv->rxon_timing.atim_window = 0; | |
1dda6d28 JB |
522 | } else { |
523 | priv->rxon_timing.atim_window = 0; | |
2c2f3b33 TW |
524 | } |
525 | ||
526 | beacon_int = iwl_adjust_beacon_interval(beacon_int, | |
f8525e55 | 527 | priv->hw_params.max_beacon_itrvl * TIME_UNIT); |
2c2f3b33 TW |
528 | priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int); |
529 | ||
530 | tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ | |
f8525e55 | 531 | interval_tm = beacon_int * TIME_UNIT; |
2c2f3b33 TW |
532 | rem = do_div(tsf, interval_tm); |
533 | priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem); | |
534 | ||
535 | spin_unlock_irqrestore(&priv->lock, flags); | |
536 | IWL_DEBUG_ASSOC(priv, | |
537 | "beacon interval %d beacon timer %d beacon tim %d\n", | |
538 | le16_to_cpu(priv->rxon_timing.beacon_interval), | |
539 | le32_to_cpu(priv->rxon_timing.beacon_init_val), | |
540 | le16_to_cpu(priv->rxon_timing.atim_window)); | |
541 | } | |
542 | EXPORT_SYMBOL(iwl_setup_rxon_timing); | |
543 | ||
8ccde88a SO |
544 | void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) |
545 | { | |
546 | struct iwl_rxon_cmd *rxon = &priv->staging_rxon; | |
547 | ||
548 | if (hw_decrypt) | |
549 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
550 | else | |
551 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
552 | ||
553 | } | |
554 | EXPORT_SYMBOL(iwl_set_rxon_hwcrypto); | |
555 | ||
556 | /** | |
557 | * iwl_check_rxon_cmd - validate RXON structure is valid | |
558 | * | |
559 | * NOTE: This is really only useful during development and can eventually | |
560 | * be #ifdef'd out once the driver is stable and folks aren't actively | |
561 | * making changes | |
562 | */ | |
563 | int iwl_check_rxon_cmd(struct iwl_priv *priv) | |
564 | { | |
565 | int error = 0; | |
566 | int counter = 1; | |
567 | struct iwl_rxon_cmd *rxon = &priv->staging_rxon; | |
568 | ||
569 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
570 | error |= le32_to_cpu(rxon->flags & | |
571 | (RXON_FLG_TGJ_NARROW_BAND_MSK | | |
572 | RXON_FLG_RADAR_DETECT_MSK)); | |
573 | if (error) | |
574 | IWL_WARN(priv, "check 24G fields %d | %d\n", | |
575 | counter++, error); | |
576 | } else { | |
577 | error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ? | |
578 | 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK); | |
579 | if (error) | |
580 | IWL_WARN(priv, "check 52 fields %d | %d\n", | |
581 | counter++, error); | |
582 | error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK); | |
583 | if (error) | |
584 | IWL_WARN(priv, "check 52 CCK %d | %d\n", | |
585 | counter++, error); | |
586 | } | |
587 | error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1; | |
588 | if (error) | |
589 | IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error); | |
590 | ||
591 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
592 | error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) && | |
593 | ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0)); | |
594 | if (error) | |
595 | IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error); | |
596 | ||
597 | error |= (le16_to_cpu(rxon->assoc_id) > 2007); | |
598 | if (error) | |
599 | IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error); | |
600 | ||
601 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) | |
602 | == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)); | |
603 | if (error) | |
604 | IWL_WARN(priv, "check CCK and short slot %d | %d\n", | |
605 | counter++, error); | |
606 | ||
607 | error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) | |
608 | == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)); | |
609 | if (error) | |
610 | IWL_WARN(priv, "check CCK & auto detect %d | %d\n", | |
611 | counter++, error); | |
612 | ||
613 | error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | | |
614 | RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK); | |
615 | if (error) | |
616 | IWL_WARN(priv, "check TGG and auto detect %d | %d\n", | |
617 | counter++, error); | |
618 | ||
619 | if (error) | |
620 | IWL_WARN(priv, "Tuning to channel %d\n", | |
621 | le16_to_cpu(rxon->channel)); | |
622 | ||
623 | if (error) { | |
624 | IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n"); | |
625 | return -1; | |
626 | } | |
627 | return 0; | |
628 | } | |
629 | EXPORT_SYMBOL(iwl_check_rxon_cmd); | |
630 | ||
631 | /** | |
632 | * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed | |
633 | * @priv: staging_rxon is compared to active_rxon | |
634 | * | |
635 | * If the RXON structure is changing enough to require a new tune, | |
636 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
637 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
638 | */ | |
639 | int iwl_full_rxon_required(struct iwl_priv *priv) | |
640 | { | |
641 | ||
642 | /* These items are only settable from the full RXON command */ | |
643 | if (!(iwl_is_associated(priv)) || | |
644 | compare_ether_addr(priv->staging_rxon.bssid_addr, | |
645 | priv->active_rxon.bssid_addr) || | |
646 | compare_ether_addr(priv->staging_rxon.node_addr, | |
647 | priv->active_rxon.node_addr) || | |
648 | compare_ether_addr(priv->staging_rxon.wlap_bssid_addr, | |
649 | priv->active_rxon.wlap_bssid_addr) || | |
650 | (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) || | |
651 | (priv->staging_rxon.channel != priv->active_rxon.channel) || | |
652 | (priv->staging_rxon.air_propagation != | |
653 | priv->active_rxon.air_propagation) || | |
654 | (priv->staging_rxon.ofdm_ht_single_stream_basic_rates != | |
655 | priv->active_rxon.ofdm_ht_single_stream_basic_rates) || | |
656 | (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates != | |
657 | priv->active_rxon.ofdm_ht_dual_stream_basic_rates) || | |
c2105fa7 DH |
658 | (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates != |
659 | priv->active_rxon.ofdm_ht_triple_stream_basic_rates) || | |
8ccde88a SO |
660 | (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id)) |
661 | return 1; | |
662 | ||
663 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
664 | * be updated with the RXON_ASSOC command -- however only some | |
665 | * flag transitions are allowed using RXON_ASSOC */ | |
666 | ||
667 | /* Check if we are not switching bands */ | |
668 | if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) != | |
669 | (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)) | |
670 | return 1; | |
671 | ||
672 | /* Check if we are switching association toggle */ | |
673 | if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) != | |
674 | (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) | |
675 | return 1; | |
676 | ||
677 | return 0; | |
678 | } | |
679 | EXPORT_SYMBOL(iwl_full_rxon_required); | |
680 | ||
681 | u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv) | |
682 | { | |
4a02886b JB |
683 | /* |
684 | * Assign the lowest rate -- should really get this from | |
685 | * the beacon skb from mac80211. | |
686 | */ | |
8ccde88a SO |
687 | if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) |
688 | return IWL_RATE_1M_PLCP; | |
689 | else | |
690 | return IWL_RATE_6M_PLCP; | |
691 | } | |
692 | EXPORT_SYMBOL(iwl_rate_get_lowest_plcp); | |
693 | ||
fad95bf5 | 694 | void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) |
47c5196e | 695 | { |
c1adf9fb | 696 | struct iwl_rxon_cmd *rxon = &priv->staging_rxon; |
47c5196e | 697 | |
fad95bf5 | 698 | if (!ht_conf->is_ht) { |
a2b0f02e | 699 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | |
42eb7c64 | 700 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | |
7aafef1c | 701 | RXON_FLG_HT40_PROT_MSK | |
42eb7c64 | 702 | RXON_FLG_HT_PROT_MSK); |
47c5196e | 703 | return; |
42eb7c64 | 704 | } |
47c5196e | 705 | |
a2b0f02e WYG |
706 | /* FIXME: if the definition of ht_protection changed, the "translation" |
707 | * will be needed for rxon->flags | |
708 | */ | |
fad95bf5 | 709 | rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS); |
a2b0f02e WYG |
710 | |
711 | /* Set up channel bandwidth: | |
7aafef1c | 712 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ |
a2b0f02e WYG |
713 | /* clear the HT channel mode before set the mode */ |
714 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | | |
715 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
7aafef1c WYG |
716 | if (iwl_is_ht40_tx_allowed(priv, NULL)) { |
717 | /* pure ht40 */ | |
fad95bf5 | 718 | if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
a2b0f02e | 719 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
508b08e7 | 720 | /* Note: control channel is opposite of extension channel */ |
fad95bf5 | 721 | switch (ht_conf->extension_chan_offset) { |
508b08e7 WYG |
722 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
723 | rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
724 | break; | |
725 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
726 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
727 | break; | |
728 | } | |
729 | } else { | |
a2b0f02e | 730 | /* Note: control channel is opposite of extension channel */ |
fad95bf5 | 731 | switch (ht_conf->extension_chan_offset) { |
a2b0f02e WYG |
732 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
733 | rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
734 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
735 | break; | |
736 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
737 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
738 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; | |
739 | break; | |
740 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
741 | default: | |
742 | /* channel location only valid if in Mixed mode */ | |
743 | IWL_ERR(priv, "invalid extension channel offset\n"); | |
744 | break; | |
745 | } | |
746 | } | |
747 | } else { | |
748 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
47c5196e TW |
749 | } |
750 | ||
45823531 AK |
751 | if (priv->cfg->ops->hcmd->set_rxon_chain) |
752 | priv->cfg->ops->hcmd->set_rxon_chain(priv); | |
47c5196e | 753 | |
02bb1bea | 754 | IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " |
ae5eb026 | 755 | "extension channel offset 0x%x\n", |
fad95bf5 JB |
756 | le32_to_cpu(rxon->flags), ht_conf->ht_protection, |
757 | ht_conf->extension_chan_offset); | |
47c5196e TW |
758 | } |
759 | EXPORT_SYMBOL(iwl_set_rxon_ht); | |
760 | ||
9e5e6c32 TW |
761 | #define IWL_NUM_RX_CHAINS_MULTIPLE 3 |
762 | #define IWL_NUM_RX_CHAINS_SINGLE 2 | |
763 | #define IWL_NUM_IDLE_CHAINS_DUAL 2 | |
764 | #define IWL_NUM_IDLE_CHAINS_SINGLE 1 | |
765 | ||
2b396a12 JB |
766 | /* |
767 | * Determine how many receiver/antenna chains to use. | |
768 | * | |
769 | * More provides better reception via diversity. Fewer saves power | |
770 | * at the expense of throughput, but only when not in powersave to | |
771 | * start with. | |
772 | * | |
c7de35cd RR |
773 | * MIMO (dual stream) requires at least 2, but works better with 3. |
774 | * This does not determine *which* chains to use, just how many. | |
775 | */ | |
28a6b07a | 776 | static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) |
c7de35cd | 777 | { |
c7de35cd | 778 | /* # of Rx chains to use when expecting MIMO. */ |
02bb1bea | 779 | if (is_single_rx_stream(priv)) |
9e5e6c32 | 780 | return IWL_NUM_RX_CHAINS_SINGLE; |
c7de35cd | 781 | else |
9e5e6c32 | 782 | return IWL_NUM_RX_CHAINS_MULTIPLE; |
28a6b07a | 783 | } |
c7de35cd | 784 | |
2b396a12 | 785 | /* |
3f3e0376 WYG |
786 | * When we are in power saving mode, unless device support spatial |
787 | * multiplexing power save, use the active count for rx chain count. | |
2b396a12 | 788 | */ |
28a6b07a TW |
789 | static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) |
790 | { | |
ba37a3d0 JB |
791 | /* # Rx chains when idling, depending on SMPS mode */ |
792 | switch (priv->current_ht_config.smps) { | |
793 | case IEEE80211_SMPS_STATIC: | |
794 | case IEEE80211_SMPS_DYNAMIC: | |
795 | return IWL_NUM_IDLE_CHAINS_SINGLE; | |
796 | case IEEE80211_SMPS_OFF: | |
797 | return active_cnt; | |
c15d20c1 | 798 | default: |
ba37a3d0 JB |
799 | WARN(1, "invalid SMPS mode %d", |
800 | priv->current_ht_config.smps); | |
801 | return active_cnt; | |
3f3e0376 | 802 | } |
c7de35cd RR |
803 | } |
804 | ||
04816448 GE |
805 | /* up to 4 chains */ |
806 | static u8 iwl_count_chain_bitmap(u32 chain_bitmap) | |
807 | { | |
808 | u8 res; | |
809 | res = (chain_bitmap & BIT(0)) >> 0; | |
810 | res += (chain_bitmap & BIT(1)) >> 1; | |
811 | res += (chain_bitmap & BIT(2)) >> 2; | |
9bddbab3 | 812 | res += (chain_bitmap & BIT(3)) >> 3; |
04816448 GE |
813 | return res; |
814 | } | |
815 | ||
c7de35cd RR |
816 | /** |
817 | * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image | |
818 | * | |
819 | * Selects how many and which Rx receivers/antennas/chains to use. | |
820 | * This should not be used for scan command ... it puts data in wrong place. | |
821 | */ | |
822 | void iwl_set_rxon_chain(struct iwl_priv *priv) | |
823 | { | |
28a6b07a TW |
824 | bool is_single = is_single_rx_stream(priv); |
825 | bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); | |
04816448 GE |
826 | u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; |
827 | u32 active_chains; | |
28a6b07a | 828 | u16 rx_chain; |
c7de35cd RR |
829 | |
830 | /* Tell uCode which antennas are actually connected. | |
831 | * Before first association, we assume all antennas are connected. | |
832 | * Just after first association, iwl_chain_noise_calibration() | |
833 | * checks which antennas actually *are* connected. */ | |
04816448 GE |
834 | if (priv->chain_noise_data.active_chains) |
835 | active_chains = priv->chain_noise_data.active_chains; | |
836 | else | |
837 | active_chains = priv->hw_params.valid_rx_ant; | |
838 | ||
839 | rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; | |
c7de35cd RR |
840 | |
841 | /* How many receivers should we use? */ | |
28a6b07a TW |
842 | active_rx_cnt = iwl_get_active_rx_chain_count(priv); |
843 | idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); | |
844 | ||
28a6b07a | 845 | |
04816448 GE |
846 | /* correct rx chain count according hw settings |
847 | * and chain noise calibration | |
848 | */ | |
849 | valid_rx_cnt = iwl_count_chain_bitmap(active_chains); | |
850 | if (valid_rx_cnt < active_rx_cnt) | |
851 | active_rx_cnt = valid_rx_cnt; | |
852 | ||
853 | if (valid_rx_cnt < idle_rx_cnt) | |
854 | idle_rx_cnt = valid_rx_cnt; | |
28a6b07a TW |
855 | |
856 | rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; | |
857 | rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; | |
858 | ||
859 | priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain); | |
860 | ||
9e5e6c32 | 861 | if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) |
c7de35cd RR |
862 | priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; |
863 | else | |
864 | priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
865 | ||
e1623446 | 866 | IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", |
28a6b07a TW |
867 | priv->staging_rxon.rx_chain, |
868 | active_rx_cnt, idle_rx_cnt); | |
869 | ||
870 | WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || | |
871 | active_rx_cnt < idle_rx_cnt); | |
c7de35cd RR |
872 | } |
873 | EXPORT_SYMBOL(iwl_set_rxon_chain); | |
bf85ea4f | 874 | |
14023641 AK |
875 | /* Return valid channel */ |
876 | u8 iwl_get_single_channel_number(struct iwl_priv *priv, | |
877 | enum ieee80211_band band) | |
878 | { | |
879 | const struct iwl_channel_info *ch_info; | |
880 | int i; | |
881 | u8 channel = 0; | |
882 | ||
883 | /* only scan single channel, good enough to reset the RF */ | |
884 | /* pick the first valid not in-use channel */ | |
885 | if (band == IEEE80211_BAND_5GHZ) { | |
886 | for (i = 14; i < priv->channel_count; i++) { | |
887 | if (priv->channel_info[i].channel != | |
888 | le16_to_cpu(priv->staging_rxon.channel)) { | |
889 | channel = priv->channel_info[i].channel; | |
890 | ch_info = iwl_get_channel_info(priv, | |
891 | band, channel); | |
892 | if (is_channel_valid(ch_info)) | |
893 | break; | |
894 | } | |
895 | } | |
896 | } else { | |
897 | for (i = 0; i < 14; i++) { | |
898 | if (priv->channel_info[i].channel != | |
899 | le16_to_cpu(priv->staging_rxon.channel)) { | |
900 | channel = | |
901 | priv->channel_info[i].channel; | |
902 | ch_info = iwl_get_channel_info(priv, | |
903 | band, channel); | |
904 | if (is_channel_valid(ch_info)) | |
905 | break; | |
906 | } | |
907 | } | |
908 | } | |
909 | ||
910 | return channel; | |
911 | } | |
912 | EXPORT_SYMBOL(iwl_get_single_channel_number); | |
913 | ||
bf85ea4f | 914 | /** |
17e72782 | 915 | * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON |
bf85ea4f AK |
916 | * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz |
917 | * @channel: Any channel valid for the requested phymode | |
918 | ||
919 | * In addition to setting the staging RXON, priv->phymode is also set. | |
920 | * | |
921 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
922 | * in the staging RXON flag structure based on the phymode | |
923 | */ | |
17e72782 | 924 | int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch) |
bf85ea4f | 925 | { |
17e72782 TW |
926 | enum ieee80211_band band = ch->band; |
927 | u16 channel = ieee80211_frequency_to_channel(ch->center_freq); | |
928 | ||
8622e705 | 929 | if (!iwl_get_channel_info(priv, band, channel)) { |
e1623446 | 930 | IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n", |
bf85ea4f AK |
931 | channel, band); |
932 | return -EINVAL; | |
933 | } | |
934 | ||
935 | if ((le16_to_cpu(priv->staging_rxon.channel) == channel) && | |
936 | (priv->band == band)) | |
937 | return 0; | |
938 | ||
939 | priv->staging_rxon.channel = cpu_to_le16(channel); | |
940 | if (band == IEEE80211_BAND_5GHZ) | |
941 | priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK; | |
942 | else | |
943 | priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; | |
944 | ||
945 | priv->band = band; | |
946 | ||
e1623446 | 947 | IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); |
bf85ea4f AK |
948 | |
949 | return 0; | |
950 | } | |
c7de35cd | 951 | EXPORT_SYMBOL(iwl_set_rxon_channel); |
bf85ea4f | 952 | |
79d07325 WYG |
953 | void iwl_set_flags_for_band(struct iwl_priv *priv, |
954 | enum ieee80211_band band, | |
955 | struct ieee80211_vif *vif) | |
8ccde88a SO |
956 | { |
957 | if (band == IEEE80211_BAND_5GHZ) { | |
958 | priv->staging_rxon.flags &= | |
959 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
960 | | RXON_FLG_CCK_MSK); | |
961 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
962 | } else { | |
963 | /* Copied from iwl_post_associate() */ | |
c213d745 | 964 | if (vif && vif->bss_conf.use_short_slot) |
8ccde88a SO |
965 | priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; |
966 | else | |
967 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
968 | ||
8ccde88a SO |
969 | priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; |
970 | priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
971 | priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK; | |
972 | } | |
973 | } | |
79d07325 | 974 | EXPORT_SYMBOL(iwl_set_flags_for_band); |
8ccde88a SO |
975 | |
976 | /* | |
977 | * initialize rxon structure with default values from eeprom | |
978 | */ | |
1dda6d28 JB |
979 | void iwl_connection_init_rx_config(struct iwl_priv *priv, |
980 | struct ieee80211_vif *vif) | |
8ccde88a SO |
981 | { |
982 | const struct iwl_channel_info *ch_info; | |
1dda6d28 JB |
983 | enum nl80211_iftype type = NL80211_IFTYPE_STATION; |
984 | ||
985 | if (vif) | |
986 | type = vif->type; | |
8ccde88a SO |
987 | |
988 | memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon)); | |
989 | ||
1dda6d28 | 990 | switch (type) { |
8ccde88a SO |
991 | case NL80211_IFTYPE_AP: |
992 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP; | |
993 | break; | |
994 | ||
995 | case NL80211_IFTYPE_STATION: | |
996 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS; | |
997 | priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
998 | break; | |
999 | ||
1000 | case NL80211_IFTYPE_ADHOC: | |
1001 | priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS; | |
1002 | priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
1003 | priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK | | |
1004 | RXON_FILTER_ACCEPT_GRP_MSK; | |
1005 | break; | |
1006 | ||
8ccde88a | 1007 | default: |
1dda6d28 | 1008 | IWL_ERR(priv, "Unsupported interface type %d\n", type); |
8ccde88a SO |
1009 | break; |
1010 | } | |
1011 | ||
1012 | #if 0 | |
1013 | /* TODO: Figure out when short_preamble would be set and cache from | |
1014 | * that */ | |
1015 | if (!hw_to_local(priv->hw)->short_preamble) | |
1016 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
1017 | else | |
1018 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
1019 | #endif | |
1020 | ||
1021 | ch_info = iwl_get_channel_info(priv, priv->band, | |
1022 | le16_to_cpu(priv->active_rxon.channel)); | |
1023 | ||
1024 | if (!ch_info) | |
1025 | ch_info = &priv->channel_info[0]; | |
1026 | ||
8ccde88a SO |
1027 | priv->staging_rxon.channel = cpu_to_le16(ch_info->channel); |
1028 | priv->band = ch_info->band; | |
1029 | ||
1dda6d28 | 1030 | iwl_set_flags_for_band(priv, priv->band, vif); |
8ccde88a SO |
1031 | |
1032 | priv->staging_rxon.ofdm_basic_rates = | |
1033 | (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
1034 | priv->staging_rxon.cck_basic_rates = | |
1035 | (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
1036 | ||
a2b0f02e WYG |
1037 | /* clear both MIX and PURE40 mode flag */ |
1038 | priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | | |
1039 | RXON_FLG_CHANNEL_MODE_PURE_40); | |
7684c408 JB |
1040 | |
1041 | if (vif) | |
1042 | memcpy(priv->staging_rxon.node_addr, vif->addr, ETH_ALEN); | |
1043 | ||
8ccde88a SO |
1044 | priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff; |
1045 | priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff; | |
11397a65 | 1046 | priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff; |
8ccde88a SO |
1047 | } |
1048 | EXPORT_SYMBOL(iwl_connection_init_rx_config); | |
1049 | ||
79d07325 | 1050 | void iwl_set_rate(struct iwl_priv *priv) |
8ccde88a SO |
1051 | { |
1052 | const struct ieee80211_supported_band *hw = NULL; | |
1053 | struct ieee80211_rate *rate; | |
1054 | int i; | |
1055 | ||
1056 | hw = iwl_get_hw_mode(priv, priv->band); | |
1057 | if (!hw) { | |
1058 | IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | priv->active_rate = 0; | |
8ccde88a SO |
1063 | |
1064 | for (i = 0; i < hw->n_bitrates; i++) { | |
1065 | rate = &(hw->bitrates[i]); | |
5027309b | 1066 | if (rate->hw_value < IWL_RATE_COUNT_LEGACY) |
8ccde88a SO |
1067 | priv->active_rate |= (1 << rate->hw_value); |
1068 | } | |
1069 | ||
4a02886b | 1070 | IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); |
8ccde88a | 1071 | |
4a02886b JB |
1072 | priv->staging_rxon.cck_basic_rates = |
1073 | (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; | |
1074 | ||
1075 | priv->staging_rxon.ofdm_basic_rates = | |
1076 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
8ccde88a | 1077 | } |
79d07325 WYG |
1078 | EXPORT_SYMBOL(iwl_set_rate); |
1079 | ||
1080 | void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) | |
1081 | { | |
1082 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1083 | return; | |
1084 | ||
1085 | if (priv->switch_rxon.switch_in_progress) { | |
1086 | ieee80211_chswitch_done(priv->vif, is_success); | |
1087 | mutex_lock(&priv->mutex); | |
1088 | priv->switch_rxon.switch_in_progress = false; | |
1089 | mutex_unlock(&priv->mutex); | |
1090 | } | |
1091 | } | |
1092 | EXPORT_SYMBOL(iwl_chswitch_done); | |
8ccde88a SO |
1093 | |
1094 | void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) | |
1095 | { | |
2f301227 | 1096 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
8ccde88a SO |
1097 | struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon; |
1098 | struct iwl_csa_notification *csa = &(pkt->u.csa_notif); | |
4a56e965 | 1099 | |
0924e519 WYG |
1100 | if (priv->switch_rxon.switch_in_progress) { |
1101 | if (!le32_to_cpu(csa->status) && | |
1102 | (csa->channel == priv->switch_rxon.channel)) { | |
1103 | rxon->channel = csa->channel; | |
1104 | priv->staging_rxon.channel = csa->channel; | |
1105 | IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", | |
1106 | le16_to_cpu(csa->channel)); | |
79d07325 WYG |
1107 | iwl_chswitch_done(priv, true); |
1108 | } else { | |
0924e519 WYG |
1109 | IWL_ERR(priv, "CSA notif (fail) : channel %d\n", |
1110 | le16_to_cpu(csa->channel)); | |
79d07325 WYG |
1111 | iwl_chswitch_done(priv, false); |
1112 | } | |
0924e519 | 1113 | } |
8ccde88a SO |
1114 | } |
1115 | EXPORT_SYMBOL(iwl_rx_csa); | |
1116 | ||
1117 | #ifdef CONFIG_IWLWIFI_DEBUG | |
a643565e | 1118 | void iwl_print_rx_config_cmd(struct iwl_priv *priv) |
8ccde88a SO |
1119 | { |
1120 | struct iwl_rxon_cmd *rxon = &priv->staging_rxon; | |
1121 | ||
e1623446 | 1122 | IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); |
3d816c77 | 1123 | iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
e1623446 TW |
1124 | IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
1125 | IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); | |
1126 | IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", | |
8ccde88a | 1127 | le32_to_cpu(rxon->filter_flags)); |
e1623446 TW |
1128 | IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); |
1129 | IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", | |
8ccde88a | 1130 | rxon->ofdm_basic_rates); |
e1623446 TW |
1131 | IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); |
1132 | IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); | |
1133 | IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
1134 | IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); | |
8ccde88a | 1135 | } |
a643565e | 1136 | EXPORT_SYMBOL(iwl_print_rx_config_cmd); |
6686d17e | 1137 | #endif |
8ccde88a SO |
1138 | /** |
1139 | * iwl_irq_handle_error - called for HW or SW error interrupt from card | |
1140 | */ | |
1141 | void iwl_irq_handle_error(struct iwl_priv *priv) | |
1142 | { | |
1143 | /* Set the FW error flag -- cleared on iwl_down */ | |
1144 | set_bit(STATUS_FW_ERROR, &priv->status); | |
1145 | ||
1146 | /* Cancel currently queued command. */ | |
1147 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
1148 | ||
459bc732 SZ |
1149 | IWL_ERR(priv, "Loaded firmware version: %s\n", |
1150 | priv->hw->wiphy->fw_version); | |
1151 | ||
3a3ff72c | 1152 | priv->cfg->ops->lib->dump_nic_error_log(priv); |
696bdee3 WYG |
1153 | if (priv->cfg->ops->lib->dump_csr) |
1154 | priv->cfg->ops->lib->dump_csr(priv); | |
1b3eb823 WYG |
1155 | if (priv->cfg->ops->lib->dump_fh) |
1156 | priv->cfg->ops->lib->dump_fh(priv, NULL, false); | |
b03d7d0f | 1157 | priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); |
8ccde88a | 1158 | #ifdef CONFIG_IWLWIFI_DEBUG |
c341ddb2 | 1159 | if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) |
8ccde88a | 1160 | iwl_print_rx_config_cmd(priv); |
8ccde88a SO |
1161 | #endif |
1162 | ||
1163 | wake_up_interruptible(&priv->wait_command_queue); | |
1164 | ||
1165 | /* Keep the restart process from trying to send host | |
1166 | * commands by clearing the INIT status bit */ | |
1167 | clear_bit(STATUS_READY, &priv->status); | |
1168 | ||
1169 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { | |
e1623446 | 1170 | IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
8ccde88a SO |
1171 | "Restarting adapter due to uCode error.\n"); |
1172 | ||
8ccde88a SO |
1173 | if (priv->cfg->mod_params->restart_fw) |
1174 | queue_work(priv->workqueue, &priv->restart); | |
1175 | } | |
1176 | } | |
1177 | EXPORT_SYMBOL(iwl_irq_handle_error); | |
1178 | ||
f8e200de | 1179 | static int iwl_apm_stop_master(struct iwl_priv *priv) |
d68b603c | 1180 | { |
5220af0c | 1181 | int ret = 0; |
d68b603c | 1182 | |
5220af0c | 1183 | /* stop device's busmaster DMA activity */ |
d68b603c AK |
1184 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
1185 | ||
5220af0c | 1186 | ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, |
d68b603c | 1187 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); |
5220af0c BC |
1188 | if (ret) |
1189 | IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); | |
d68b603c | 1190 | |
d68b603c AK |
1191 | IWL_DEBUG_INFO(priv, "stop master\n"); |
1192 | ||
5220af0c | 1193 | return ret; |
d68b603c | 1194 | } |
d68b603c AK |
1195 | |
1196 | void iwl_apm_stop(struct iwl_priv *priv) | |
1197 | { | |
fadb3582 BC |
1198 | IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); |
1199 | ||
5220af0c | 1200 | /* Stop device's DMA activity */ |
d68b603c AK |
1201 | iwl_apm_stop_master(priv); |
1202 | ||
5220af0c | 1203 | /* Reset the entire device */ |
d68b603c AK |
1204 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
1205 | ||
1206 | udelay(10); | |
5220af0c BC |
1207 | |
1208 | /* | |
1209 | * Clear "initialization complete" bit to move adapter from | |
1210 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
1211 | */ | |
d68b603c | 1212 | iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
d68b603c AK |
1213 | } |
1214 | EXPORT_SYMBOL(iwl_apm_stop); | |
1215 | ||
fadb3582 BC |
1216 | |
1217 | /* | |
1218 | * Start up NIC's basic functionality after it has been reset | |
1219 | * (e.g. after platform boot, or shutdown via iwl_apm_stop()) | |
1220 | * NOTE: This does not load uCode nor start the embedded processor | |
1221 | */ | |
1222 | int iwl_apm_init(struct iwl_priv *priv) | |
1223 | { | |
1224 | int ret = 0; | |
1225 | u16 lctl; | |
1226 | ||
1227 | IWL_DEBUG_INFO(priv, "Init card's basic functions\n"); | |
1228 | ||
1229 | /* | |
1230 | * Use "set_bit" below rather than "write", to preserve any hardware | |
1231 | * bits already set by default after reset. | |
1232 | */ | |
1233 | ||
1234 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
1235 | iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1236 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
1237 | ||
1238 | /* | |
1239 | * Disable L0s without affecting L1; | |
1240 | * don't wait for ICH L0s (ICH bug W/A) | |
1241 | */ | |
1242 | iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
1243 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); | |
1244 | ||
1245 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
1246 | iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); | |
1247 | ||
1248 | /* | |
1249 | * Enable HAP INTA (interrupt from management bus) to | |
1250 | * wake device's PCI Express link L1a -> L0s | |
1251 | * NOTE: This is no-op for 3945 (non-existant bit) | |
1252 | */ | |
1253 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, | |
1254 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); | |
1255 | ||
1256 | /* | |
a6c5c731 BC |
1257 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. |
1258 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
1259 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
1260 | * costs negligible amount of power savings. | |
1261 | * If not (unlikely), enable L0S, so there is at least some | |
1262 | * power savings, even without L1. | |
fadb3582 BC |
1263 | */ |
1264 | if (priv->cfg->set_l0s) { | |
1265 | lctl = iwl_pcie_link_ctl(priv); | |
1266 | if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == | |
1267 | PCI_CFG_LINK_CTRL_VAL_L1_EN) { | |
1268 | /* L1-ASPM enabled; disable(!) L0S */ | |
1269 | iwl_set_bit(priv, CSR_GIO_REG, | |
1270 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1271 | IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); | |
1272 | } else { | |
1273 | /* L1-ASPM disabled; enable(!) L0S */ | |
1274 | iwl_clear_bit(priv, CSR_GIO_REG, | |
1275 | CSR_GIO_REG_VAL_L0S_ENABLED); | |
1276 | IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | /* Configure analog phase-lock-loop before activating to D0A */ | |
1281 | if (priv->cfg->pll_cfg_val) | |
1282 | iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val); | |
1283 | ||
1284 | /* | |
1285 | * Set "initialization complete" bit to move adapter from | |
1286 | * D0U* --> D0A* (powered-up active) state. | |
1287 | */ | |
1288 | iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1289 | ||
1290 | /* | |
1291 | * Wait for clock stabilization; once stabilized, access to | |
1292 | * device-internal resources is supported, e.g. iwl_write_prph() | |
1293 | * and accesses to uCode SRAM. | |
1294 | */ | |
1295 | ret = iwl_poll_bit(priv, CSR_GP_CNTRL, | |
1296 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1297 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
1298 | if (ret < 0) { | |
1299 | IWL_DEBUG_INFO(priv, "Failed to init the card\n"); | |
1300 | goto out; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
1305 | * BSM (Boostrap State Machine) is only in 3945 and 4965; | |
1306 | * later devices (i.e. 5000 and later) have non-volatile SRAM, | |
1307 | * and don't need BSM to restore data after power-saving sleep. | |
1308 | * | |
1309 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
1310 | * do not disable clocks. This preserves any hardware bits already | |
1311 | * set by default in "CLK_CTRL_REG" after reset. | |
1312 | */ | |
1313 | if (priv->cfg->use_bsm) | |
1314 | iwl_write_prph(priv, APMG_CLK_EN_REG, | |
1315 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); | |
1316 | else | |
1317 | iwl_write_prph(priv, APMG_CLK_EN_REG, | |
1318 | APMG_CLK_VAL_DMA_CLK_RQT); | |
1319 | udelay(20); | |
1320 | ||
1321 | /* Disable L1-Active */ | |
1322 | iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, | |
1323 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
1324 | ||
1325 | out: | |
1326 | return ret; | |
1327 | } | |
1328 | EXPORT_SYMBOL(iwl_apm_init); | |
1329 | ||
1330 | ||
da154e30 RR |
1331 | int iwl_set_hw_params(struct iwl_priv *priv) |
1332 | { | |
da154e30 RR |
1333 | priv->hw_params.max_rxq_size = RX_QUEUE_SIZE; |
1334 | priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; | |
1335 | if (priv->cfg->mod_params->amsdu_size_8K) | |
2f301227 | 1336 | priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K); |
da154e30 | 1337 | else |
2f301227 | 1338 | priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K); |
da154e30 | 1339 | |
2c2f3b33 TW |
1340 | priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL; |
1341 | ||
49779293 RR |
1342 | if (priv->cfg->mod_params->disable_11n) |
1343 | priv->cfg->sku &= ~IWL_SKU_N; | |
1344 | ||
da154e30 RR |
1345 | /* Device-specific setup */ |
1346 | return priv->cfg->ops->lib->set_hw_params(priv); | |
1347 | } | |
1348 | EXPORT_SYMBOL(iwl_set_hw_params); | |
6ba87956 | 1349 | |
630fe9b6 TW |
1350 | int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) |
1351 | { | |
1352 | int ret = 0; | |
5eadd94b WYG |
1353 | s8 prev_tx_power = priv->tx_power_user_lmt; |
1354 | ||
b744cb79 WYG |
1355 | if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) { |
1356 | IWL_WARN(priv, | |
1357 | "Requested user TXPOWER %d below lower limit %d.\n", | |
daf518de | 1358 | tx_power, |
b744cb79 | 1359 | IWLAGN_TX_POWER_TARGET_POWER_MIN); |
630fe9b6 TW |
1360 | return -EINVAL; |
1361 | } | |
1362 | ||
dc1b0973 | 1363 | if (tx_power > priv->tx_power_device_lmt) { |
08f2d58d WYG |
1364 | IWL_WARN(priv, |
1365 | "Requested user TXPOWER %d above upper limit %d.\n", | |
dc1b0973 | 1366 | tx_power, priv->tx_power_device_lmt); |
630fe9b6 TW |
1367 | return -EINVAL; |
1368 | } | |
1369 | ||
1370 | if (priv->tx_power_user_lmt != tx_power) | |
1371 | force = true; | |
1372 | ||
019fb97d | 1373 | /* if nic is not up don't send command */ |
5eadd94b WYG |
1374 | if (iwl_is_ready_rf(priv)) { |
1375 | priv->tx_power_user_lmt = tx_power; | |
1376 | if (force && priv->cfg->ops->lib->send_tx_power) | |
1377 | ret = priv->cfg->ops->lib->send_tx_power(priv); | |
1378 | else if (!priv->cfg->ops->lib->send_tx_power) | |
1379 | ret = -EOPNOTSUPP; | |
1380 | /* | |
1381 | * if fail to set tx_power, restore the orig. tx power | |
1382 | */ | |
1383 | if (ret) | |
1384 | priv->tx_power_user_lmt = prev_tx_power; | |
1385 | } | |
630fe9b6 | 1386 | |
5eadd94b WYG |
1387 | /* |
1388 | * Even this is an async host command, the command | |
1389 | * will always report success from uCode | |
1390 | * So once driver can placing the command into the queue | |
1391 | * successfully, driver can use priv->tx_power_user_lmt | |
1392 | * to reflect the current tx power | |
1393 | */ | |
630fe9b6 TW |
1394 | return ret; |
1395 | } | |
1396 | EXPORT_SYMBOL(iwl_set_tx_power); | |
1397 | ||
ef850d7c | 1398 | irqreturn_t iwl_isr_legacy(int irq, void *data) |
f17d08a6 AK |
1399 | { |
1400 | struct iwl_priv *priv = data; | |
1401 | u32 inta, inta_mask; | |
1402 | u32 inta_fh; | |
6e8cc38d | 1403 | unsigned long flags; |
f17d08a6 AK |
1404 | if (!priv) |
1405 | return IRQ_NONE; | |
1406 | ||
6e8cc38d | 1407 | spin_lock_irqsave(&priv->lock, flags); |
f17d08a6 AK |
1408 | |
1409 | /* Disable (but don't clear!) interrupts here to avoid | |
1410 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
1411 | * If we have something to service, the tasklet will re-enable ints. | |
1412 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
1413 | inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ | |
1414 | iwl_write32(priv, CSR_INT_MASK, 0x00000000); | |
1415 | ||
1416 | /* Discover which interrupts are active/pending */ | |
1417 | inta = iwl_read32(priv, CSR_INT); | |
1418 | inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); | |
1419 | ||
1420 | /* Ignore interrupt if there's nothing in NIC to service. | |
1421 | * This may be due to IRQ shared with another device, | |
1422 | * or due to sporadic interrupts thrown from our NIC. */ | |
1423 | if (!inta && !inta_fh) { | |
1424 | IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n"); | |
1425 | goto none; | |
1426 | } | |
1427 | ||
1428 | if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { | |
1429 | /* Hardware disappeared. It might have already raised | |
1430 | * an interrupt */ | |
1431 | IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); | |
1432 | goto unplugged; | |
1433 | } | |
1434 | ||
1435 | IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", | |
1436 | inta, inta_mask, inta_fh); | |
1437 | ||
1438 | inta &= ~CSR_INT_BIT_SCD; | |
1439 | ||
1440 | /* iwl_irq_tasklet() will service interrupts and re-enable them */ | |
1441 | if (likely(inta || inta_fh)) | |
1442 | tasklet_schedule(&priv->irq_tasklet); | |
1443 | ||
1444 | unplugged: | |
6e8cc38d | 1445 | spin_unlock_irqrestore(&priv->lock, flags); |
f17d08a6 AK |
1446 | return IRQ_HANDLED; |
1447 | ||
1448 | none: | |
1449 | /* re-enable interrupts here since we don't have anything to service. */ | |
1450 | /* only Re-enable if diabled by irq */ | |
1451 | if (test_bit(STATUS_INT_ENABLED, &priv->status)) | |
1452 | iwl_enable_interrupts(priv); | |
6e8cc38d | 1453 | spin_unlock_irqrestore(&priv->lock, flags); |
f17d08a6 AK |
1454 | return IRQ_NONE; |
1455 | } | |
ef850d7c | 1456 | EXPORT_SYMBOL(iwl_isr_legacy); |
f17d08a6 | 1457 | |
65b52bde | 1458 | void iwl_send_bt_config(struct iwl_priv *priv) |
17f841cd SO |
1459 | { |
1460 | struct iwl_bt_cmd bt_cmd = { | |
456d0f76 WYG |
1461 | .lead_time = BT_LEAD_TIME_DEF, |
1462 | .max_kill = BT_MAX_KILL_DEF, | |
17f841cd SO |
1463 | .kill_ack_mask = 0, |
1464 | .kill_cts_mask = 0, | |
1465 | }; | |
1466 | ||
06702a73 WYG |
1467 | if (!bt_coex_active) |
1468 | bt_cmd.flags = BT_COEX_DISABLE; | |
1469 | else | |
1470 | bt_cmd.flags = BT_COEX_ENABLE; | |
1471 | ||
1472 | IWL_DEBUG_INFO(priv, "BT coex %s\n", | |
1473 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); | |
1474 | ||
65b52bde JB |
1475 | if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
1476 | sizeof(struct iwl_bt_cmd), &bt_cmd)) | |
1477 | IWL_ERR(priv, "failed to send BT Coex Config\n"); | |
17f841cd SO |
1478 | } |
1479 | EXPORT_SYMBOL(iwl_send_bt_config); | |
1480 | ||
ef8d5529 | 1481 | int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) |
49ea8596 | 1482 | { |
ef8d5529 WYG |
1483 | struct iwl_statistics_cmd statistics_cmd = { |
1484 | .configuration_flags = | |
1485 | clear ? IWL_STATS_CONF_CLEAR_STATS : 0, | |
49ea8596 | 1486 | }; |
ef8d5529 WYG |
1487 | |
1488 | if (flags & CMD_ASYNC) | |
1489 | return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, | |
1490 | sizeof(struct iwl_statistics_cmd), | |
1491 | &statistics_cmd, NULL); | |
1492 | else | |
1493 | return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, | |
1494 | sizeof(struct iwl_statistics_cmd), | |
1495 | &statistics_cmd); | |
49ea8596 EG |
1496 | } |
1497 | EXPORT_SYMBOL(iwl_send_statistics_request); | |
7e8c519e | 1498 | |
47f4a587 EG |
1499 | void iwl_rf_kill_ct_config(struct iwl_priv *priv) |
1500 | { | |
1501 | struct iwl_ct_kill_config cmd; | |
672639de | 1502 | struct iwl_ct_kill_throttling_config adv_cmd; |
47f4a587 EG |
1503 | unsigned long flags; |
1504 | int ret = 0; | |
1505 | ||
1506 | spin_lock_irqsave(&priv->lock, flags); | |
1507 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, | |
1508 | CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); | |
1509 | spin_unlock_irqrestore(&priv->lock, flags); | |
3ad3b92a | 1510 | priv->thermal_throttle.ct_kill_toggle = false; |
47f4a587 | 1511 | |
480e8407 | 1512 | if (priv->cfg->support_ct_kill_exit) { |
672639de WYG |
1513 | adv_cmd.critical_temperature_enter = |
1514 | cpu_to_le32(priv->hw_params.ct_kill_threshold); | |
1515 | adv_cmd.critical_temperature_exit = | |
1516 | cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); | |
1517 | ||
1518 | ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, | |
1519 | sizeof(adv_cmd), &adv_cmd); | |
d91b1ba3 WYG |
1520 | if (ret) |
1521 | IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); | |
1522 | else | |
1523 | IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " | |
1524 | "succeeded, " | |
1525 | "critical temperature enter is %d," | |
1526 | "exit is %d\n", | |
1527 | priv->hw_params.ct_kill_threshold, | |
1528 | priv->hw_params.ct_kill_exit_threshold); | |
480e8407 | 1529 | } else { |
672639de WYG |
1530 | cmd.critical_temperature_R = |
1531 | cpu_to_le32(priv->hw_params.ct_kill_threshold); | |
189a2b59 | 1532 | |
672639de WYG |
1533 | ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, |
1534 | sizeof(cmd), &cmd); | |
d91b1ba3 WYG |
1535 | if (ret) |
1536 | IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); | |
1537 | else | |
1538 | IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " | |
1539 | "succeeded, " | |
1540 | "critical temperature is %d\n", | |
1541 | priv->hw_params.ct_kill_threshold); | |
672639de | 1542 | } |
47f4a587 EG |
1543 | } |
1544 | EXPORT_SYMBOL(iwl_rf_kill_ct_config); | |
14a08a7f | 1545 | |
0ad91a35 | 1546 | |
14a08a7f EG |
1547 | /* |
1548 | * CARD_STATE_CMD | |
1549 | * | |
1550 | * Use: Sets the device's internal card state to enable, disable, or halt | |
1551 | * | |
1552 | * When in the 'enable' state the card operates as normal. | |
1553 | * When in the 'disable' state, the card enters into a low power mode. | |
1554 | * When in the 'halt' state, the card is shut down and must be fully | |
1555 | * restarted to come back on. | |
1556 | */ | |
c496294e | 1557 | int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag) |
14a08a7f EG |
1558 | { |
1559 | struct iwl_host_cmd cmd = { | |
1560 | .id = REPLY_CARD_STATE_CMD, | |
1561 | .len = sizeof(u32), | |
1562 | .data = &flags, | |
c2acea8e | 1563 | .flags = meta_flag, |
14a08a7f EG |
1564 | }; |
1565 | ||
1566 | return iwl_send_cmd(priv, &cmd); | |
1567 | } | |
1568 | ||
030f05ed AK |
1569 | void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, |
1570 | struct iwl_rx_mem_buffer *rxb) | |
1571 | { | |
1572 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2f301227 | 1573 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
030f05ed AK |
1574 | struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); |
1575 | IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", | |
1576 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); | |
1577 | #endif | |
1578 | } | |
1579 | EXPORT_SYMBOL(iwl_rx_pm_sleep_notif); | |
1580 | ||
1581 | void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, | |
1582 | struct iwl_rx_mem_buffer *rxb) | |
1583 | { | |
2f301227 | 1584 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
396887a2 | 1585 | u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; |
030f05ed | 1586 | IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " |
396887a2 DH |
1587 | "notification for %s:\n", len, |
1588 | get_cmd_string(pkt->hdr.cmd)); | |
1589 | iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); | |
030f05ed AK |
1590 | } |
1591 | EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif); | |
261b9c33 AK |
1592 | |
1593 | void iwl_rx_reply_error(struct iwl_priv *priv, | |
1594 | struct iwl_rx_mem_buffer *rxb) | |
1595 | { | |
2f301227 | 1596 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
261b9c33 AK |
1597 | |
1598 | IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " | |
1599 | "seq 0x%04X ser 0x%08X\n", | |
1600 | le32_to_cpu(pkt->u.err_resp.error_type), | |
1601 | get_cmd_string(pkt->u.err_resp.cmd_id), | |
1602 | pkt->u.err_resp.cmd_id, | |
1603 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
1604 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
1605 | } | |
1606 | EXPORT_SYMBOL(iwl_rx_reply_error); | |
1607 | ||
a83b9141 WYG |
1608 | void iwl_clear_isr_stats(struct iwl_priv *priv) |
1609 | { | |
1610 | memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); | |
1611 | } | |
a83b9141 | 1612 | |
488829f1 AK |
1613 | int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
1614 | const struct ieee80211_tx_queue_params *params) | |
1615 | { | |
1616 | struct iwl_priv *priv = hw->priv; | |
1617 | unsigned long flags; | |
1618 | int q; | |
1619 | ||
1620 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1621 | ||
1622 | if (!iwl_is_ready_rf(priv)) { | |
1623 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
1624 | return -EIO; | |
1625 | } | |
1626 | ||
1627 | if (queue >= AC_NUM) { | |
1628 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); | |
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | q = AC_NUM - 1 - queue; | |
1633 | ||
1634 | spin_lock_irqsave(&priv->lock, flags); | |
1635 | ||
1636 | priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min); | |
1637 | priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max); | |
1638 | priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; | |
1639 | priv->qos_data.def_qos_parm.ac[q].edca_txop = | |
1640 | cpu_to_le16((params->txop * 32)); | |
1641 | ||
1642 | priv->qos_data.def_qos_parm.ac[q].reserved1 = 0; | |
488829f1 AK |
1643 | |
1644 | spin_unlock_irqrestore(&priv->lock, flags); | |
1645 | ||
1646 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1647 | return 0; | |
1648 | } | |
1649 | EXPORT_SYMBOL(iwl_mac_conf_tx); | |
5bbe233b AK |
1650 | |
1651 | static void iwl_ht_conf(struct iwl_priv *priv, | |
ca3c1f59 | 1652 | struct ieee80211_vif *vif) |
5bbe233b | 1653 | { |
fad95bf5 | 1654 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
5bbe233b | 1655 | struct ieee80211_sta *sta; |
ca3c1f59 | 1656 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
5bbe233b | 1657 | |
91dd6c27 | 1658 | IWL_DEBUG_MAC80211(priv, "enter:\n"); |
5bbe233b | 1659 | |
fad95bf5 | 1660 | if (!ht_conf->is_ht) |
5bbe233b AK |
1661 | return; |
1662 | ||
fad95bf5 | 1663 | ht_conf->ht_protection = |
9ed6bcce | 1664 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
fad95bf5 | 1665 | ht_conf->non_GF_STA_present = |
9ed6bcce | 1666 | !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); |
5bbe233b | 1667 | |
02bb1bea JB |
1668 | ht_conf->single_chain_sufficient = false; |
1669 | ||
ca3c1f59 | 1670 | switch (vif->type) { |
02bb1bea JB |
1671 | case NL80211_IFTYPE_STATION: |
1672 | rcu_read_lock(); | |
ca3c1f59 | 1673 | sta = ieee80211_find_sta(vif, bss_conf->bssid); |
02bb1bea JB |
1674 | if (sta) { |
1675 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; | |
1676 | int maxstreams; | |
1677 | ||
1678 | maxstreams = (ht_cap->mcs.tx_params & | |
1679 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1680 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
1681 | maxstreams += 1; | |
1682 | ||
1683 | if ((ht_cap->mcs.rx_mask[1] == 0) && | |
1684 | (ht_cap->mcs.rx_mask[2] == 0)) | |
1685 | ht_conf->single_chain_sufficient = true; | |
1686 | if (maxstreams <= 1) | |
1687 | ht_conf->single_chain_sufficient = true; | |
1688 | } else { | |
1689 | /* | |
1690 | * If at all, this can only happen through a race | |
1691 | * when the AP disconnects us while we're still | |
1692 | * setting up the connection, in that case mac80211 | |
1693 | * will soon tell us about that. | |
1694 | */ | |
1695 | ht_conf->single_chain_sufficient = true; | |
1696 | } | |
1697 | rcu_read_unlock(); | |
1698 | break; | |
1699 | case NL80211_IFTYPE_ADHOC: | |
1700 | ht_conf->single_chain_sufficient = true; | |
1701 | break; | |
1702 | default: | |
1703 | break; | |
1704 | } | |
5bbe233b AK |
1705 | |
1706 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1707 | } | |
1708 | ||
c91c3efc AK |
1709 | static inline void iwl_set_no_assoc(struct iwl_priv *priv) |
1710 | { | |
c91c3efc AK |
1711 | iwl_led_disassociate(priv); |
1712 | /* | |
1713 | * inform the ucode that there is no longer an | |
1714 | * association and that no more packets should be | |
1715 | * sent | |
1716 | */ | |
1717 | priv->staging_rxon.filter_flags &= | |
1718 | ~RXON_FILTER_ASSOC_MSK; | |
1719 | priv->staging_rxon.assoc_id = 0; | |
1720 | iwlcore_commit_rxon(priv); | |
1721 | } | |
1722 | ||
0bc5774f JB |
1723 | static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb) |
1724 | { | |
1725 | struct iwl_priv *priv = hw->priv; | |
1726 | unsigned long flags; | |
1727 | __le64 timestamp; | |
1728 | ||
1729 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1730 | ||
1731 | if (!iwl_is_ready_rf(priv)) { | |
1732 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); | |
1733 | return -EIO; | |
1734 | } | |
1735 | ||
1736 | spin_lock_irqsave(&priv->lock, flags); | |
1737 | ||
1738 | if (priv->ibss_beacon) | |
1739 | dev_kfree_skb(priv->ibss_beacon); | |
1740 | ||
1741 | priv->ibss_beacon = skb; | |
1742 | ||
1743 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; | |
1744 | priv->timestamp = le64_to_cpu(timestamp); | |
1745 | ||
1746 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
1747 | spin_unlock_irqrestore(&priv->lock, flags); | |
1748 | ||
1749 | priv->cfg->ops->lib->post_associate(priv, priv->vif); | |
1750 | ||
1751 | return 0; | |
1752 | } | |
1753 | ||
5bbe233b | 1754 | void iwl_bss_info_changed(struct ieee80211_hw *hw, |
2d0ddec5 JB |
1755 | struct ieee80211_vif *vif, |
1756 | struct ieee80211_bss_conf *bss_conf, | |
1757 | u32 changes) | |
5bbe233b AK |
1758 | { |
1759 | struct iwl_priv *priv = hw->priv; | |
3a650292 | 1760 | int ret; |
5bbe233b AK |
1761 | |
1762 | IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); | |
1763 | ||
2d0ddec5 JB |
1764 | if (!iwl_is_alive(priv)) |
1765 | return; | |
1766 | ||
1767 | mutex_lock(&priv->mutex); | |
1768 | ||
4ced3f74 JB |
1769 | if (changes & BSS_CHANGED_QOS) { |
1770 | unsigned long flags; | |
1771 | ||
1772 | spin_lock_irqsave(&priv->lock, flags); | |
1773 | priv->qos_data.qos_active = bss_conf->qos; | |
1774 | iwl_update_qos(priv); | |
1775 | spin_unlock_irqrestore(&priv->lock, flags); | |
1776 | } | |
1777 | ||
92445c95 | 1778 | if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_AP) { |
2d0ddec5 JB |
1779 | dev_kfree_skb(priv->ibss_beacon); |
1780 | priv->ibss_beacon = ieee80211_beacon_get(hw, vif); | |
1781 | } | |
1782 | ||
d7129e19 | 1783 | if (changes & BSS_CHANGED_BEACON_INT) { |
d7129e19 JB |
1784 | /* TODO: in AP mode, do something to make this take effect */ |
1785 | } | |
1786 | ||
1787 | if (changes & BSS_CHANGED_BSSID) { | |
1788 | IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); | |
1789 | ||
1790 | /* | |
1791 | * If there is currently a HW scan going on in the | |
1792 | * background then we need to cancel it else the RXON | |
1793 | * below/in post_associate will fail. | |
1794 | */ | |
2d0ddec5 | 1795 | if (iwl_scan_cancel_timeout(priv, 100)) { |
d7129e19 | 1796 | IWL_WARN(priv, "Aborted scan still in progress after 100ms\n"); |
2d0ddec5 JB |
1797 | IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n"); |
1798 | mutex_unlock(&priv->mutex); | |
1799 | return; | |
1800 | } | |
2d0ddec5 | 1801 | |
d7129e19 | 1802 | /* mac80211 only sets assoc when in STATION mode */ |
92445c95 | 1803 | if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { |
d7129e19 JB |
1804 | memcpy(priv->staging_rxon.bssid_addr, |
1805 | bss_conf->bssid, ETH_ALEN); | |
2d0ddec5 | 1806 | |
d7129e19 JB |
1807 | /* currently needed in a few places */ |
1808 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
1809 | } else { | |
1810 | priv->staging_rxon.filter_flags &= | |
1811 | ~RXON_FILTER_ASSOC_MSK; | |
2d0ddec5 | 1812 | } |
d7129e19 | 1813 | |
2d0ddec5 JB |
1814 | } |
1815 | ||
d7129e19 JB |
1816 | /* |
1817 | * This needs to be after setting the BSSID in case | |
1818 | * mac80211 decides to do both changes at once because | |
1819 | * it will invoke post_associate. | |
1820 | */ | |
92445c95 | 1821 | if (vif->type == NL80211_IFTYPE_ADHOC && |
2d0ddec5 JB |
1822 | changes & BSS_CHANGED_BEACON) { |
1823 | struct sk_buff *beacon = ieee80211_beacon_get(hw, vif); | |
1824 | ||
1825 | if (beacon) | |
1826 | iwl_mac_beacon_update(hw, beacon); | |
1827 | } | |
1828 | ||
5bbe233b AK |
1829 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
1830 | IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", | |
1831 | bss_conf->use_short_preamble); | |
1832 | if (bss_conf->use_short_preamble) | |
1833 | priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
1834 | else | |
1835 | priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
1836 | } | |
1837 | ||
1838 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { | |
1839 | IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot); | |
1840 | if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) | |
1841 | priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
1842 | else | |
1843 | priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
94597ab2 JB |
1844 | if (bss_conf->use_cts_prot) |
1845 | priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN; | |
1846 | else | |
1847 | priv->staging_rxon.flags &= ~RXON_FLG_SELF_CTS_EN; | |
5bbe233b AK |
1848 | } |
1849 | ||
d7129e19 JB |
1850 | if (changes & BSS_CHANGED_BASIC_RATES) { |
1851 | /* XXX use this information | |
1852 | * | |
1853 | * To do that, remove code from iwl_set_rate() and put something | |
1854 | * like this here: | |
1855 | * | |
1856 | if (A-band) | |
1857 | priv->staging_rxon.ofdm_basic_rates = | |
1858 | bss_conf->basic_rates; | |
1859 | else | |
1860 | priv->staging_rxon.ofdm_basic_rates = | |
1861 | bss_conf->basic_rates >> 4; | |
1862 | priv->staging_rxon.cck_basic_rates = | |
1863 | bss_conf->basic_rates & 0xF; | |
1864 | */ | |
1865 | } | |
1866 | ||
5bbe233b | 1867 | if (changes & BSS_CHANGED_HT) { |
ca3c1f59 | 1868 | iwl_ht_conf(priv, vif); |
45823531 AK |
1869 | |
1870 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
1871 | priv->cfg->ops->hcmd->set_rxon_chain(priv); | |
5bbe233b AK |
1872 | } |
1873 | ||
1874 | if (changes & BSS_CHANGED_ASSOC) { | |
1875 | IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); | |
5bbe233b | 1876 | if (bss_conf->assoc) { |
5bbe233b | 1877 | priv->timestamp = bss_conf->timestamp; |
5bbe233b | 1878 | |
e932a609 JB |
1879 | iwl_led_associate(priv); |
1880 | ||
d7129e19 | 1881 | if (!iwl_is_rfkill(priv)) |
1dda6d28 | 1882 | priv->cfg->ops->lib->post_associate(priv, vif); |
c91c3efc AK |
1883 | } else |
1884 | iwl_set_no_assoc(priv); | |
d7129e19 JB |
1885 | } |
1886 | ||
1dda6d28 | 1887 | if (changes && iwl_is_associated(priv) && bss_conf->aid) { |
d7129e19 JB |
1888 | IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", |
1889 | changes); | |
1890 | ret = iwl_send_rxon_assoc(priv); | |
1891 | if (!ret) { | |
1892 | /* Sync active_rxon with latest change. */ | |
1893 | memcpy((void *)&priv->active_rxon, | |
1894 | &priv->staging_rxon, | |
1895 | sizeof(struct iwl_rxon_cmd)); | |
5bbe233b | 1896 | } |
5bbe233b | 1897 | } |
d7129e19 | 1898 | |
c91c3efc AK |
1899 | if (changes & BSS_CHANGED_BEACON_ENABLED) { |
1900 | if (vif->bss_conf.enable_beacon) { | |
1901 | memcpy(priv->staging_rxon.bssid_addr, | |
1902 | bss_conf->bssid, ETH_ALEN); | |
1903 | memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); | |
1dda6d28 | 1904 | iwlcore_config_ap(priv, vif); |
c91c3efc AK |
1905 | } else |
1906 | iwl_set_no_assoc(priv); | |
f513dfff DH |
1907 | } |
1908 | ||
1fa61b2e JB |
1909 | if (changes & BSS_CHANGED_IBSS) { |
1910 | ret = priv->cfg->ops->lib->manage_ibss_station(priv, vif, | |
1911 | bss_conf->ibss_joined); | |
1912 | if (ret) | |
1913 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
1914 | bss_conf->ibss_joined ? "add" : "remove", | |
1915 | bss_conf->bssid); | |
1916 | } | |
1917 | ||
d7129e19 JB |
1918 | mutex_unlock(&priv->mutex); |
1919 | ||
2d0ddec5 | 1920 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
5bbe233b AK |
1921 | } |
1922 | EXPORT_SYMBOL(iwl_bss_info_changed); | |
1923 | ||
b55e75ed | 1924 | static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif) |
727882d6 | 1925 | { |
1dda6d28 | 1926 | iwl_connection_init_rx_config(priv, vif); |
727882d6 AK |
1927 | |
1928 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
1929 | priv->cfg->ops->hcmd->set_rxon_chain(priv); | |
1930 | ||
b55e75ed | 1931 | return iwlcore_commit_rxon(priv); |
727882d6 | 1932 | } |
727882d6 | 1933 | |
b55e75ed | 1934 | int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cbb6ab94 AK |
1935 | { |
1936 | struct iwl_priv *priv = hw->priv; | |
47e28f41 | 1937 | int err = 0; |
cbb6ab94 | 1938 | |
3779db10 JB |
1939 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
1940 | vif->type, vif->addr); | |
cbb6ab94 | 1941 | |
47e28f41 JB |
1942 | mutex_lock(&priv->mutex); |
1943 | ||
b55e75ed JB |
1944 | if (WARN_ON(!iwl_is_ready_rf(priv))) { |
1945 | err = -EINVAL; | |
1946 | goto out; | |
1947 | } | |
1948 | ||
cbb6ab94 AK |
1949 | if (priv->vif) { |
1950 | IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n"); | |
47e28f41 JB |
1951 | err = -EOPNOTSUPP; |
1952 | goto out; | |
cbb6ab94 AK |
1953 | } |
1954 | ||
1ed32e4f JB |
1955 | priv->vif = vif; |
1956 | priv->iw_mode = vif->type; | |
cbb6ab94 | 1957 | |
b55e75ed JB |
1958 | err = iwl_set_mode(priv, vif); |
1959 | if (err) | |
1960 | goto out_err; | |
7e246191 | 1961 | |
b55e75ed | 1962 | goto out; |
cbb6ab94 | 1963 | |
b55e75ed JB |
1964 | out_err: |
1965 | priv->vif = NULL; | |
1966 | priv->iw_mode = NL80211_IFTYPE_STATION; | |
47e28f41 | 1967 | out: |
cbb6ab94 AK |
1968 | mutex_unlock(&priv->mutex); |
1969 | ||
1970 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
47e28f41 | 1971 | return err; |
cbb6ab94 AK |
1972 | } |
1973 | EXPORT_SYMBOL(iwl_mac_add_interface); | |
1974 | ||
d8052319 | 1975 | void iwl_mac_remove_interface(struct ieee80211_hw *hw, |
b55e75ed | 1976 | struct ieee80211_vif *vif) |
d8052319 AK |
1977 | { |
1978 | struct iwl_priv *priv = hw->priv; | |
02f5ba5b | 1979 | bool scan_completed = false; |
d8052319 AK |
1980 | |
1981 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
1982 | ||
1983 | mutex_lock(&priv->mutex); | |
1984 | ||
1985 | if (iwl_is_ready_rf(priv)) { | |
1986 | iwl_scan_cancel_timeout(priv, 100); | |
1987 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
1988 | iwlcore_commit_rxon(priv); | |
1989 | } | |
1ed32e4f | 1990 | if (priv->vif == vif) { |
d8052319 | 1991 | priv->vif = NULL; |
f84b29ec | 1992 | if (priv->scan_vif == vif) { |
02f5ba5b | 1993 | scan_completed = true; |
f84b29ec JB |
1994 | priv->scan_vif = NULL; |
1995 | priv->scan_request = NULL; | |
1996 | } | |
d8052319 AK |
1997 | memset(priv->bssid, 0, ETH_ALEN); |
1998 | } | |
1999 | mutex_unlock(&priv->mutex); | |
2000 | ||
02f5ba5b JB |
2001 | if (scan_completed) |
2002 | ieee80211_scan_completed(priv->hw, true); | |
2003 | ||
d8052319 AK |
2004 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
2005 | ||
2006 | } | |
2007 | EXPORT_SYMBOL(iwl_mac_remove_interface); | |
2008 | ||
4808368d AK |
2009 | /** |
2010 | * iwl_mac_config - mac80211 config callback | |
4808368d AK |
2011 | */ |
2012 | int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) | |
2013 | { | |
2014 | struct iwl_priv *priv = hw->priv; | |
2015 | const struct iwl_channel_info *ch_info; | |
2016 | struct ieee80211_conf *conf = &hw->conf; | |
fad95bf5 | 2017 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
4808368d AK |
2018 | unsigned long flags = 0; |
2019 | int ret = 0; | |
2020 | u16 ch; | |
2021 | int scan_active = 0; | |
2022 | ||
2023 | mutex_lock(&priv->mutex); | |
2024 | ||
4808368d AK |
2025 | IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", |
2026 | conf->channel->hw_value, changed); | |
2027 | ||
2028 | if (unlikely(!priv->cfg->mod_params->disable_hw_scan && | |
2029 | test_bit(STATUS_SCANNING, &priv->status))) { | |
2030 | scan_active = 1; | |
2031 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); | |
2032 | } | |
2033 | ||
ba37a3d0 JB |
2034 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | |
2035 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2036 | /* mac80211 uses static for non-HT which is what we want */ | |
2037 | priv->current_ht_config.smps = conf->smps_mode; | |
2038 | ||
2039 | /* | |
2040 | * Recalculate chain counts. | |
2041 | * | |
2042 | * If monitor mode is enabled then mac80211 will | |
2043 | * set up the SM PS mode to OFF if an HT channel is | |
2044 | * configured. | |
2045 | */ | |
2046 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
2047 | priv->cfg->ops->hcmd->set_rxon_chain(priv); | |
2048 | } | |
4808368d AK |
2049 | |
2050 | /* during scanning mac80211 will delay channel setting until | |
2051 | * scan finish with changed = 0 | |
2052 | */ | |
2053 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { | |
2054 | if (scan_active) | |
2055 | goto set_ch_out; | |
2056 | ||
2057 | ch = ieee80211_frequency_to_channel(conf->channel->center_freq); | |
2058 | ch_info = iwl_get_channel_info(priv, conf->channel->band, ch); | |
2059 | if (!is_channel_valid(ch_info)) { | |
2060 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
2061 | ret = -EINVAL; | |
2062 | goto set_ch_out; | |
2063 | } | |
2064 | ||
4808368d AK |
2065 | spin_lock_irqsave(&priv->lock, flags); |
2066 | ||
28bd723b DH |
2067 | /* Configure HT40 channels */ |
2068 | ht_conf->is_ht = conf_is_ht(conf); | |
2069 | if (ht_conf->is_ht) { | |
2070 | if (conf_is_ht40_minus(conf)) { | |
2071 | ht_conf->extension_chan_offset = | |
2072 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
c812ee24 | 2073 | ht_conf->is_40mhz = true; |
28bd723b DH |
2074 | } else if (conf_is_ht40_plus(conf)) { |
2075 | ht_conf->extension_chan_offset = | |
2076 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
c812ee24 | 2077 | ht_conf->is_40mhz = true; |
28bd723b DH |
2078 | } else { |
2079 | ht_conf->extension_chan_offset = | |
2080 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
c812ee24 | 2081 | ht_conf->is_40mhz = false; |
28bd723b DH |
2082 | } |
2083 | } else | |
c812ee24 | 2084 | ht_conf->is_40mhz = false; |
28bd723b DH |
2085 | /* Default to no protection. Protection mode will later be set |
2086 | * from BSS config in iwl_ht_conf */ | |
2087 | ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
4808368d AK |
2088 | |
2089 | /* if we are switching from ht to 2.4 clear flags | |
2090 | * from any ht related info since 2.4 does not | |
2091 | * support ht */ | |
2092 | if ((le16_to_cpu(priv->staging_rxon.channel) != ch)) | |
2093 | priv->staging_rxon.flags = 0; | |
2094 | ||
2095 | iwl_set_rxon_channel(priv, conf->channel); | |
5e2f75b8 | 2096 | iwl_set_rxon_ht(priv, ht_conf); |
4808368d | 2097 | |
1dda6d28 | 2098 | iwl_set_flags_for_band(priv, conf->channel->band, priv->vif); |
4808368d | 2099 | spin_unlock_irqrestore(&priv->lock, flags); |
79d07325 | 2100 | |
278c2f6f DH |
2101 | if (priv->cfg->ops->lib->update_bcast_station) |
2102 | ret = priv->cfg->ops->lib->update_bcast_station(priv); | |
2103 | ||
4808368d AK |
2104 | set_ch_out: |
2105 | /* The list of supported rates and rate mask can be different | |
2106 | * for each band; since the band may have changed, reset | |
2107 | * the rate mask to what mac80211 lists */ | |
2108 | iwl_set_rate(priv); | |
2109 | } | |
2110 | ||
78f5fb7f JB |
2111 | if (changed & (IEEE80211_CONF_CHANGE_PS | |
2112 | IEEE80211_CONF_CHANGE_IDLE)) { | |
e312c24c | 2113 | ret = iwl_power_update_mode(priv, false); |
4808368d | 2114 | if (ret) |
e312c24c | 2115 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); |
4808368d AK |
2116 | } |
2117 | ||
2118 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
2119 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
2120 | priv->tx_power_user_lmt, conf->power_level); | |
2121 | ||
2122 | iwl_set_tx_power(priv, conf->power_level, false); | |
2123 | } | |
2124 | ||
0cf4c01e MA |
2125 | if (!iwl_is_ready(priv)) { |
2126 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2127 | goto out; | |
2128 | } | |
2129 | ||
4808368d AK |
2130 | if (scan_active) |
2131 | goto out; | |
2132 | ||
2133 | if (memcmp(&priv->active_rxon, | |
2134 | &priv->staging_rxon, sizeof(priv->staging_rxon))) | |
2135 | iwlcore_commit_rxon(priv); | |
2136 | else | |
2137 | IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n"); | |
2138 | ||
2139 | ||
2140 | out: | |
2141 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2142 | mutex_unlock(&priv->mutex); | |
2143 | return ret; | |
2144 | } | |
2145 | EXPORT_SYMBOL(iwl_mac_config); | |
2146 | ||
bd564261 AK |
2147 | void iwl_mac_reset_tsf(struct ieee80211_hw *hw) |
2148 | { | |
2149 | struct iwl_priv *priv = hw->priv; | |
2150 | unsigned long flags; | |
2151 | ||
2152 | mutex_lock(&priv->mutex); | |
2153 | IWL_DEBUG_MAC80211(priv, "enter\n"); | |
2154 | ||
2155 | spin_lock_irqsave(&priv->lock, flags); | |
fad95bf5 | 2156 | memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); |
bd564261 AK |
2157 | spin_unlock_irqrestore(&priv->lock, flags); |
2158 | ||
bd564261 | 2159 | spin_lock_irqsave(&priv->lock, flags); |
bd564261 AK |
2160 | |
2161 | /* new association get rid of ibss beacon skb */ | |
2162 | if (priv->ibss_beacon) | |
2163 | dev_kfree_skb(priv->ibss_beacon); | |
2164 | ||
2165 | priv->ibss_beacon = NULL; | |
2166 | ||
bd564261 | 2167 | priv->timestamp = 0; |
bd564261 AK |
2168 | |
2169 | spin_unlock_irqrestore(&priv->lock, flags); | |
2170 | ||
2171 | if (!iwl_is_ready_rf(priv)) { | |
2172 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
2173 | mutex_unlock(&priv->mutex); | |
2174 | return; | |
2175 | } | |
2176 | ||
2177 | /* we are restarting association process | |
2178 | * clear RXON_FILTER_ASSOC_MSK bit | |
2179 | */ | |
b4665df4 JB |
2180 | iwl_scan_cancel_timeout(priv, 100); |
2181 | priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2182 | iwlcore_commit_rxon(priv); | |
bd564261 AK |
2183 | |
2184 | iwl_set_rate(priv); | |
2185 | ||
2186 | mutex_unlock(&priv->mutex); | |
2187 | ||
2188 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
2189 | } | |
2190 | EXPORT_SYMBOL(iwl_mac_reset_tsf); | |
2191 | ||
88804e2b WYG |
2192 | int iwl_alloc_txq_mem(struct iwl_priv *priv) |
2193 | { | |
2194 | if (!priv->txq) | |
2195 | priv->txq = kzalloc( | |
2196 | sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues, | |
2197 | GFP_KERNEL); | |
2198 | if (!priv->txq) { | |
91dd6c27 | 2199 | IWL_ERR(priv, "Not enough memory for txq\n"); |
88804e2b WYG |
2200 | return -ENOMEM; |
2201 | } | |
2202 | return 0; | |
2203 | } | |
2204 | EXPORT_SYMBOL(iwl_alloc_txq_mem); | |
2205 | ||
2206 | void iwl_free_txq_mem(struct iwl_priv *priv) | |
2207 | { | |
2208 | kfree(priv->txq); | |
2209 | priv->txq = NULL; | |
2210 | } | |
2211 | EXPORT_SYMBOL(iwl_free_txq_mem); | |
2212 | ||
20594eb0 WYG |
2213 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
2214 | ||
2215 | #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) | |
2216 | ||
2217 | void iwl_reset_traffic_log(struct iwl_priv *priv) | |
2218 | { | |
2219 | priv->tx_traffic_idx = 0; | |
2220 | priv->rx_traffic_idx = 0; | |
2221 | if (priv->tx_traffic) | |
2222 | memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
2223 | if (priv->rx_traffic) | |
2224 | memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); | |
2225 | } | |
2226 | ||
2227 | int iwl_alloc_traffic_mem(struct iwl_priv *priv) | |
2228 | { | |
2229 | u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; | |
2230 | ||
2231 | if (iwl_debug_level & IWL_DL_TX) { | |
2232 | if (!priv->tx_traffic) { | |
2233 | priv->tx_traffic = | |
2234 | kzalloc(traffic_size, GFP_KERNEL); | |
2235 | if (!priv->tx_traffic) | |
2236 | return -ENOMEM; | |
2237 | } | |
2238 | } | |
2239 | if (iwl_debug_level & IWL_DL_RX) { | |
2240 | if (!priv->rx_traffic) { | |
2241 | priv->rx_traffic = | |
2242 | kzalloc(traffic_size, GFP_KERNEL); | |
2243 | if (!priv->rx_traffic) | |
2244 | return -ENOMEM; | |
2245 | } | |
2246 | } | |
2247 | iwl_reset_traffic_log(priv); | |
2248 | return 0; | |
2249 | } | |
2250 | EXPORT_SYMBOL(iwl_alloc_traffic_mem); | |
2251 | ||
2252 | void iwl_free_traffic_mem(struct iwl_priv *priv) | |
2253 | { | |
2254 | kfree(priv->tx_traffic); | |
2255 | priv->tx_traffic = NULL; | |
2256 | ||
2257 | kfree(priv->rx_traffic); | |
2258 | priv->rx_traffic = NULL; | |
2259 | } | |
2260 | EXPORT_SYMBOL(iwl_free_traffic_mem); | |
2261 | ||
2262 | void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv, | |
2263 | u16 length, struct ieee80211_hdr *header) | |
2264 | { | |
2265 | __le16 fc; | |
2266 | u16 len; | |
2267 | ||
2268 | if (likely(!(iwl_debug_level & IWL_DL_TX))) | |
2269 | return; | |
2270 | ||
2271 | if (!priv->tx_traffic) | |
2272 | return; | |
2273 | ||
2274 | fc = header->frame_control; | |
2275 | if (ieee80211_is_data(fc)) { | |
2276 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
2277 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
2278 | memcpy((priv->tx_traffic + | |
2279 | (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
2280 | header, len); | |
2281 | priv->tx_traffic_idx = | |
2282 | (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
2283 | } | |
2284 | } | |
2285 | EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame); | |
2286 | ||
2287 | void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, | |
2288 | u16 length, struct ieee80211_hdr *header) | |
2289 | { | |
2290 | __le16 fc; | |
2291 | u16 len; | |
2292 | ||
2293 | if (likely(!(iwl_debug_level & IWL_DL_RX))) | |
2294 | return; | |
2295 | ||
2296 | if (!priv->rx_traffic) | |
2297 | return; | |
2298 | ||
2299 | fc = header->frame_control; | |
2300 | if (ieee80211_is_data(fc)) { | |
2301 | len = (length > IWL_TRAFFIC_ENTRY_SIZE) | |
2302 | ? IWL_TRAFFIC_ENTRY_SIZE : length; | |
2303 | memcpy((priv->rx_traffic + | |
2304 | (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), | |
2305 | header, len); | |
2306 | priv->rx_traffic_idx = | |
2307 | (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; | |
2308 | } | |
2309 | } | |
2310 | EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame); | |
22fdf3c9 WYG |
2311 | |
2312 | const char *get_mgmt_string(int cmd) | |
2313 | { | |
2314 | switch (cmd) { | |
2315 | IWL_CMD(MANAGEMENT_ASSOC_REQ); | |
2316 | IWL_CMD(MANAGEMENT_ASSOC_RESP); | |
2317 | IWL_CMD(MANAGEMENT_REASSOC_REQ); | |
2318 | IWL_CMD(MANAGEMENT_REASSOC_RESP); | |
2319 | IWL_CMD(MANAGEMENT_PROBE_REQ); | |
2320 | IWL_CMD(MANAGEMENT_PROBE_RESP); | |
2321 | IWL_CMD(MANAGEMENT_BEACON); | |
2322 | IWL_CMD(MANAGEMENT_ATIM); | |
2323 | IWL_CMD(MANAGEMENT_DISASSOC); | |
2324 | IWL_CMD(MANAGEMENT_AUTH); | |
2325 | IWL_CMD(MANAGEMENT_DEAUTH); | |
2326 | IWL_CMD(MANAGEMENT_ACTION); | |
2327 | default: | |
2328 | return "UNKNOWN"; | |
2329 | ||
2330 | } | |
2331 | } | |
2332 | ||
2333 | const char *get_ctrl_string(int cmd) | |
2334 | { | |
2335 | switch (cmd) { | |
2336 | IWL_CMD(CONTROL_BACK_REQ); | |
2337 | IWL_CMD(CONTROL_BACK); | |
2338 | IWL_CMD(CONTROL_PSPOLL); | |
2339 | IWL_CMD(CONTROL_RTS); | |
2340 | IWL_CMD(CONTROL_CTS); | |
2341 | IWL_CMD(CONTROL_ACK); | |
2342 | IWL_CMD(CONTROL_CFEND); | |
2343 | IWL_CMD(CONTROL_CFENDACK); | |
2344 | default: | |
2345 | return "UNKNOWN"; | |
2346 | ||
2347 | } | |
2348 | } | |
2349 | ||
7163b8a4 | 2350 | void iwl_clear_traffic_stats(struct iwl_priv *priv) |
22fdf3c9 WYG |
2351 | { |
2352 | memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); | |
22fdf3c9 | 2353 | memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); |
7163b8a4 | 2354 | priv->led_tpt = 0; |
22fdf3c9 WYG |
2355 | } |
2356 | ||
2357 | /* | |
2358 | * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will | |
2359 | * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass. | |
2360 | * Use debugFs to display the rx/rx_statistics | |
2361 | * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL | |
2362 | * information will be recorded, but DATA pkt still will be recorded | |
2363 | * for the reason of iwl_led.c need to control the led blinking based on | |
2364 | * number of tx and rx data. | |
2365 | * | |
2366 | */ | |
2367 | void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) | |
2368 | { | |
2369 | struct traffic_stats *stats; | |
2370 | ||
2371 | if (is_tx) | |
2372 | stats = &priv->tx_stats; | |
2373 | else | |
2374 | stats = &priv->rx_stats; | |
2375 | ||
2376 | if (ieee80211_is_mgmt(fc)) { | |
2377 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
2378 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
2379 | stats->mgmt[MANAGEMENT_ASSOC_REQ]++; | |
2380 | break; | |
2381 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): | |
2382 | stats->mgmt[MANAGEMENT_ASSOC_RESP]++; | |
2383 | break; | |
2384 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
2385 | stats->mgmt[MANAGEMENT_REASSOC_REQ]++; | |
2386 | break; | |
2387 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): | |
2388 | stats->mgmt[MANAGEMENT_REASSOC_RESP]++; | |
2389 | break; | |
2390 | case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): | |
2391 | stats->mgmt[MANAGEMENT_PROBE_REQ]++; | |
2392 | break; | |
2393 | case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): | |
2394 | stats->mgmt[MANAGEMENT_PROBE_RESP]++; | |
2395 | break; | |
2396 | case cpu_to_le16(IEEE80211_STYPE_BEACON): | |
2397 | stats->mgmt[MANAGEMENT_BEACON]++; | |
2398 | break; | |
2399 | case cpu_to_le16(IEEE80211_STYPE_ATIM): | |
2400 | stats->mgmt[MANAGEMENT_ATIM]++; | |
2401 | break; | |
2402 | case cpu_to_le16(IEEE80211_STYPE_DISASSOC): | |
2403 | stats->mgmt[MANAGEMENT_DISASSOC]++; | |
2404 | break; | |
2405 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
2406 | stats->mgmt[MANAGEMENT_AUTH]++; | |
2407 | break; | |
2408 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
2409 | stats->mgmt[MANAGEMENT_DEAUTH]++; | |
2410 | break; | |
2411 | case cpu_to_le16(IEEE80211_STYPE_ACTION): | |
2412 | stats->mgmt[MANAGEMENT_ACTION]++; | |
2413 | break; | |
2414 | } | |
2415 | } else if (ieee80211_is_ctl(fc)) { | |
2416 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
2417 | case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): | |
2418 | stats->ctrl[CONTROL_BACK_REQ]++; | |
2419 | break; | |
2420 | case cpu_to_le16(IEEE80211_STYPE_BACK): | |
2421 | stats->ctrl[CONTROL_BACK]++; | |
2422 | break; | |
2423 | case cpu_to_le16(IEEE80211_STYPE_PSPOLL): | |
2424 | stats->ctrl[CONTROL_PSPOLL]++; | |
2425 | break; | |
2426 | case cpu_to_le16(IEEE80211_STYPE_RTS): | |
2427 | stats->ctrl[CONTROL_RTS]++; | |
2428 | break; | |
2429 | case cpu_to_le16(IEEE80211_STYPE_CTS): | |
2430 | stats->ctrl[CONTROL_CTS]++; | |
2431 | break; | |
2432 | case cpu_to_le16(IEEE80211_STYPE_ACK): | |
2433 | stats->ctrl[CONTROL_ACK]++; | |
2434 | break; | |
2435 | case cpu_to_le16(IEEE80211_STYPE_CFEND): | |
2436 | stats->ctrl[CONTROL_CFEND]++; | |
2437 | break; | |
2438 | case cpu_to_le16(IEEE80211_STYPE_CFENDACK): | |
2439 | stats->ctrl[CONTROL_CFENDACK]++; | |
2440 | break; | |
2441 | } | |
2442 | } else { | |
2443 | /* data */ | |
2444 | stats->data_cnt++; | |
2445 | stats->data_bytes += len; | |
2446 | } | |
d5f4cf71 | 2447 | iwl_leds_background(priv); |
22fdf3c9 WYG |
2448 | } |
2449 | EXPORT_SYMBOL(iwl_update_stats); | |
20594eb0 WYG |
2450 | #endif |
2451 | ||
a0ea9493 | 2452 | static const char *get_csr_string(int cmd) |
696bdee3 WYG |
2453 | { |
2454 | switch (cmd) { | |
2455 | IWL_CMD(CSR_HW_IF_CONFIG_REG); | |
2456 | IWL_CMD(CSR_INT_COALESCING); | |
2457 | IWL_CMD(CSR_INT); | |
2458 | IWL_CMD(CSR_INT_MASK); | |
2459 | IWL_CMD(CSR_FH_INT_STATUS); | |
2460 | IWL_CMD(CSR_GPIO_IN); | |
2461 | IWL_CMD(CSR_RESET); | |
2462 | IWL_CMD(CSR_GP_CNTRL); | |
2463 | IWL_CMD(CSR_HW_REV); | |
2464 | IWL_CMD(CSR_EEPROM_REG); | |
2465 | IWL_CMD(CSR_EEPROM_GP); | |
2466 | IWL_CMD(CSR_OTP_GP_REG); | |
2467 | IWL_CMD(CSR_GIO_REG); | |
2468 | IWL_CMD(CSR_GP_UCODE_REG); | |
2469 | IWL_CMD(CSR_GP_DRIVER_REG); | |
2470 | IWL_CMD(CSR_UCODE_DRV_GP1); | |
2471 | IWL_CMD(CSR_UCODE_DRV_GP2); | |
2472 | IWL_CMD(CSR_LED_REG); | |
2473 | IWL_CMD(CSR_DRAM_INT_TBL_REG); | |
2474 | IWL_CMD(CSR_GIO_CHICKEN_BITS); | |
2475 | IWL_CMD(CSR_ANA_PLL_CFG); | |
2476 | IWL_CMD(CSR_HW_REV_WA_REG); | |
2477 | IWL_CMD(CSR_DBG_HPET_MEM_REG); | |
2478 | default: | |
2479 | return "UNKNOWN"; | |
2480 | ||
2481 | } | |
2482 | } | |
2483 | ||
2484 | void iwl_dump_csr(struct iwl_priv *priv) | |
2485 | { | |
2486 | int i; | |
2487 | u32 csr_tbl[] = { | |
2488 | CSR_HW_IF_CONFIG_REG, | |
2489 | CSR_INT_COALESCING, | |
2490 | CSR_INT, | |
2491 | CSR_INT_MASK, | |
2492 | CSR_FH_INT_STATUS, | |
2493 | CSR_GPIO_IN, | |
2494 | CSR_RESET, | |
2495 | CSR_GP_CNTRL, | |
2496 | CSR_HW_REV, | |
2497 | CSR_EEPROM_REG, | |
2498 | CSR_EEPROM_GP, | |
2499 | CSR_OTP_GP_REG, | |
2500 | CSR_GIO_REG, | |
2501 | CSR_GP_UCODE_REG, | |
2502 | CSR_GP_DRIVER_REG, | |
2503 | CSR_UCODE_DRV_GP1, | |
2504 | CSR_UCODE_DRV_GP2, | |
2505 | CSR_LED_REG, | |
2506 | CSR_DRAM_INT_TBL_REG, | |
2507 | CSR_GIO_CHICKEN_BITS, | |
2508 | CSR_ANA_PLL_CFG, | |
2509 | CSR_HW_REV_WA_REG, | |
2510 | CSR_DBG_HPET_MEM_REG | |
2511 | }; | |
2512 | IWL_ERR(priv, "CSR values:\n"); | |
2513 | IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is " | |
2514 | "CSR_INT_PERIODIC_REG)\n"); | |
2515 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { | |
2516 | IWL_ERR(priv, " %25s: 0X%08x\n", | |
2517 | get_csr_string(csr_tbl[i]), | |
2518 | iwl_read32(priv, csr_tbl[i])); | |
2519 | } | |
2520 | } | |
2521 | EXPORT_SYMBOL(iwl_dump_csr); | |
2522 | ||
a0ea9493 | 2523 | static const char *get_fh_string(int cmd) |
1b3eb823 WYG |
2524 | { |
2525 | switch (cmd) { | |
2526 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); | |
2527 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); | |
2528 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); | |
2529 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); | |
2530 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); | |
2531 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); | |
2532 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); | |
2533 | IWL_CMD(FH_TSSR_TX_STATUS_REG); | |
2534 | IWL_CMD(FH_TSSR_TX_ERROR_REG); | |
2535 | default: | |
2536 | return "UNKNOWN"; | |
2537 | ||
2538 | } | |
2539 | } | |
2540 | ||
2541 | int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display) | |
2542 | { | |
2543 | int i; | |
2544 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2545 | int pos = 0; | |
2546 | size_t bufsz = 0; | |
2547 | #endif | |
2548 | u32 fh_tbl[] = { | |
2549 | FH_RSCSR_CHNL0_STTS_WPTR_REG, | |
2550 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, | |
2551 | FH_RSCSR_CHNL0_WPTR, | |
2552 | FH_MEM_RCSR_CHNL0_CONFIG_REG, | |
2553 | FH_MEM_RSSR_SHARED_CTRL_REG, | |
2554 | FH_MEM_RSSR_RX_STATUS_REG, | |
2555 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, | |
2556 | FH_TSSR_TX_STATUS_REG, | |
2557 | FH_TSSR_TX_ERROR_REG | |
2558 | }; | |
2559 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2560 | if (display) { | |
2561 | bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; | |
2562 | *buf = kmalloc(bufsz, GFP_KERNEL); | |
2563 | if (!*buf) | |
2564 | return -ENOMEM; | |
2565 | pos += scnprintf(*buf + pos, bufsz - pos, | |
2566 | "FH register values:\n"); | |
2567 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { | |
2568 | pos += scnprintf(*buf + pos, bufsz - pos, | |
2569 | " %34s: 0X%08x\n", | |
2570 | get_fh_string(fh_tbl[i]), | |
2571 | iwl_read_direct32(priv, fh_tbl[i])); | |
2572 | } | |
2573 | return pos; | |
2574 | } | |
2575 | #endif | |
2576 | IWL_ERR(priv, "FH register values:\n"); | |
2577 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { | |
2578 | IWL_ERR(priv, " %34s: 0X%08x\n", | |
2579 | get_fh_string(fh_tbl[i]), | |
2580 | iwl_read_direct32(priv, fh_tbl[i])); | |
2581 | } | |
2582 | return 0; | |
2583 | } | |
2584 | EXPORT_SYMBOL(iwl_dump_fh); | |
2585 | ||
a93e7973 | 2586 | static void iwl_force_rf_reset(struct iwl_priv *priv) |
afbdd69a WYG |
2587 | { |
2588 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
2589 | return; | |
2590 | ||
2591 | if (!iwl_is_associated(priv)) { | |
2592 | IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); | |
2593 | return; | |
2594 | } | |
2595 | /* | |
2596 | * There is no easy and better way to force reset the radio, | |
2597 | * the only known method is switching channel which will force to | |
2598 | * reset and tune the radio. | |
2599 | * Use internal short scan (single channel) operation to should | |
2600 | * achieve this objective. | |
2601 | * Driver should reset the radio when number of consecutive missed | |
2602 | * beacon, or any other uCode error condition detected. | |
2603 | */ | |
2604 | IWL_DEBUG_INFO(priv, "perform radio reset.\n"); | |
2605 | iwl_internal_short_hw_scan(priv); | |
afbdd69a | 2606 | } |
a93e7973 | 2607 | |
a93e7973 | 2608 | |
c04f9f22 | 2609 | int iwl_force_reset(struct iwl_priv *priv, int mode, bool external) |
a93e7973 | 2610 | { |
8a472da4 WYG |
2611 | struct iwl_force_reset *force_reset; |
2612 | ||
a93e7973 WYG |
2613 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
2614 | return -EINVAL; | |
2615 | ||
8a472da4 WYG |
2616 | if (mode >= IWL_MAX_FORCE_RESET) { |
2617 | IWL_DEBUG_INFO(priv, "invalid reset request.\n"); | |
2618 | return -EINVAL; | |
2619 | } | |
2620 | force_reset = &priv->force_reset[mode]; | |
2621 | force_reset->reset_request_count++; | |
c04f9f22 WYG |
2622 | if (!external) { |
2623 | if (force_reset->last_force_reset_jiffies && | |
2624 | time_after(force_reset->last_force_reset_jiffies + | |
2625 | force_reset->reset_duration, jiffies)) { | |
2626 | IWL_DEBUG_INFO(priv, "force reset rejected\n"); | |
2627 | force_reset->reset_reject_count++; | |
2628 | return -EAGAIN; | |
2629 | } | |
a93e7973 | 2630 | } |
8a472da4 WYG |
2631 | force_reset->reset_success_count++; |
2632 | force_reset->last_force_reset_jiffies = jiffies; | |
a93e7973 | 2633 | IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); |
a93e7973 WYG |
2634 | switch (mode) { |
2635 | case IWL_RF_RESET: | |
2636 | iwl_force_rf_reset(priv); | |
2637 | break; | |
2638 | case IWL_FW_RESET: | |
c04f9f22 WYG |
2639 | /* |
2640 | * if the request is from external(ex: debugfs), | |
2641 | * then always perform the request in regardless the module | |
2642 | * parameter setting | |
2643 | * if the request is from internal (uCode error or driver | |
2644 | * detect failure), then fw_restart module parameter | |
2645 | * need to be check before performing firmware reload | |
2646 | */ | |
2647 | if (!external && !priv->cfg->mod_params->restart_fw) { | |
2648 | IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " | |
2649 | "module parameter setting\n"); | |
2650 | break; | |
2651 | } | |
a93e7973 WYG |
2652 | IWL_ERR(priv, "On demand firmware reload\n"); |
2653 | /* Set the FW error flag -- cleared on iwl_down */ | |
2654 | set_bit(STATUS_FW_ERROR, &priv->status); | |
2655 | wake_up_interruptible(&priv->wait_command_queue); | |
2656 | /* | |
2657 | * Keep the restart process from trying to send host | |
2658 | * commands by clearing the INIT status bit | |
2659 | */ | |
2660 | clear_bit(STATUS_READY, &priv->status); | |
2661 | queue_work(priv->workqueue, &priv->restart); | |
2662 | break; | |
a93e7973 | 2663 | } |
a93e7973 WYG |
2664 | return 0; |
2665 | } | |
b74e31a9 WYG |
2666 | EXPORT_SYMBOL(iwl_force_reset); |
2667 | ||
2668 | /** | |
2669 | * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover | |
2670 | * | |
2671 | * During normal condition (no queue is stuck), the timer is continually set to | |
2672 | * execute every monitor_recover_period milliseconds after the last timer | |
2673 | * expired. When the queue read_ptr is at the same place, the timer is | |
2674 | * shorten to 100mSecs. This is | |
2675 | * 1) to reduce the chance that the read_ptr may wrap around (not stuck) | |
2676 | * 2) to detect the stuck queues quicker before the station and AP can | |
2677 | * disassociate each other. | |
2678 | * | |
2679 | * This function monitors all the tx queues and recover from it if any | |
2680 | * of the queues are stuck. | |
2681 | * 1. It first check the cmd queue for stuck conditions. If it is stuck, | |
2682 | * it will recover by resetting the firmware and return. | |
2683 | * 2. Then, it checks for station association. If it associates it will check | |
2684 | * other queues. If any queue is stuck, it will recover by resetting | |
2685 | * the firmware. | |
2686 | * Note: It the number of times the queue read_ptr to be at the same place to | |
2687 | * be MAX_REPEAT+1 in order to consider to be stuck. | |
2688 | */ | |
2689 | /* | |
2690 | * The maximum number of times the read pointer of the tx queue at the | |
2691 | * same place without considering to be stuck. | |
2692 | */ | |
2693 | #define MAX_REPEAT (2) | |
2694 | static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt) | |
2695 | { | |
2696 | struct iwl_tx_queue *txq; | |
2697 | struct iwl_queue *q; | |
2698 | ||
2699 | txq = &priv->txq[cnt]; | |
2700 | q = &txq->q; | |
2701 | /* queue is empty, skip */ | |
2702 | if (q->read_ptr != q->write_ptr) { | |
2703 | if (q->read_ptr == q->last_read_ptr) { | |
2704 | /* a queue has not been read from last time */ | |
2705 | if (q->repeat_same_read_ptr > MAX_REPEAT) { | |
2706 | IWL_ERR(priv, | |
2707 | "queue %d stuck %d time. Fw reload.\n", | |
2708 | q->id, q->repeat_same_read_ptr); | |
2709 | q->repeat_same_read_ptr = 0; | |
c04f9f22 | 2710 | iwl_force_reset(priv, IWL_FW_RESET, false); |
b74e31a9 WYG |
2711 | } else { |
2712 | q->repeat_same_read_ptr++; | |
2713 | IWL_DEBUG_RADIO(priv, | |
2714 | "queue %d, not read %d time\n", | |
2715 | q->id, | |
2716 | q->repeat_same_read_ptr); | |
2717 | mod_timer(&priv->monitor_recover, jiffies + | |
2718 | msecs_to_jiffies(IWL_ONE_HUNDRED_MSECS)); | |
2719 | } | |
2720 | return 1; | |
2721 | } else { | |
2722 | q->last_read_ptr = q->read_ptr; | |
2723 | q->repeat_same_read_ptr = 0; | |
2724 | } | |
2725 | } | |
2726 | return 0; | |
2727 | } | |
2728 | ||
2729 | void iwl_bg_monitor_recover(unsigned long data) | |
2730 | { | |
2731 | struct iwl_priv *priv = (struct iwl_priv *)data; | |
2732 | int cnt; | |
2733 | ||
2734 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
2735 | return; | |
2736 | ||
2737 | /* monitor and check for stuck cmd queue */ | |
2738 | if (iwl_check_stuck_queue(priv, IWL_CMD_QUEUE_NUM)) | |
2739 | return; | |
2740 | ||
2741 | /* monitor and check for other stuck queues */ | |
2742 | if (iwl_is_associated(priv)) { | |
2743 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { | |
2744 | /* skip as we already checked the command queue */ | |
2745 | if (cnt == IWL_CMD_QUEUE_NUM) | |
2746 | continue; | |
2747 | if (iwl_check_stuck_queue(priv, cnt)) | |
2748 | return; | |
2749 | } | |
2750 | } | |
2751 | /* | |
2752 | * Reschedule the timer to occur in | |
2753 | * priv->cfg->monitor_recover_period | |
2754 | */ | |
2755 | mod_timer(&priv->monitor_recover, | |
2756 | jiffies + msecs_to_jiffies(priv->cfg->monitor_recover_period)); | |
2757 | } | |
2758 | EXPORT_SYMBOL(iwl_bg_monitor_recover); | |
afbdd69a | 2759 | |
a0ee74cf WYG |
2760 | |
2761 | /* | |
2762 | * extended beacon time format | |
2763 | * time in usec will be changed into a 32-bit value in extended:internal format | |
2764 | * the extended part is the beacon counts | |
2765 | * the internal part is the time in usec within one beacon interval | |
2766 | */ | |
2767 | u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval) | |
2768 | { | |
2769 | u32 quot; | |
2770 | u32 rem; | |
2771 | u32 interval = beacon_interval * TIME_UNIT; | |
2772 | ||
2773 | if (!interval || !usec) | |
2774 | return 0; | |
2775 | ||
2776 | quot = (usec / interval) & | |
2777 | (iwl_beacon_time_mask_high(priv, | |
2778 | priv->hw_params.beacon_time_tsf_bits) >> | |
2779 | priv->hw_params.beacon_time_tsf_bits); | |
2780 | rem = (usec % interval) & iwl_beacon_time_mask_low(priv, | |
2781 | priv->hw_params.beacon_time_tsf_bits); | |
2782 | ||
2783 | return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; | |
2784 | } | |
2785 | EXPORT_SYMBOL(iwl_usecs_to_beacons); | |
2786 | ||
2787 | /* base is usually what we get from ucode with each received frame, | |
2788 | * the same as HW timer counter counting down | |
2789 | */ | |
2790 | __le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base, | |
2791 | u32 addon, u32 beacon_interval) | |
2792 | { | |
2793 | u32 base_low = base & iwl_beacon_time_mask_low(priv, | |
2794 | priv->hw_params.beacon_time_tsf_bits); | |
2795 | u32 addon_low = addon & iwl_beacon_time_mask_low(priv, | |
2796 | priv->hw_params.beacon_time_tsf_bits); | |
2797 | u32 interval = beacon_interval * TIME_UNIT; | |
2798 | u32 res = (base & iwl_beacon_time_mask_high(priv, | |
2799 | priv->hw_params.beacon_time_tsf_bits)) + | |
2800 | (addon & iwl_beacon_time_mask_high(priv, | |
2801 | priv->hw_params.beacon_time_tsf_bits)); | |
2802 | ||
2803 | if (base_low > addon_low) | |
2804 | res += base_low - addon_low; | |
2805 | else if (base_low < addon_low) { | |
2806 | res += interval + base_low - addon_low; | |
2807 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
2808 | } else | |
2809 | res += (1 << priv->hw_params.beacon_time_tsf_bits); | |
2810 | ||
2811 | return cpu_to_le32(res); | |
2812 | } | |
2813 | EXPORT_SYMBOL(iwl_add_beacon_time); | |
2814 | ||
6da3a13e WYG |
2815 | #ifdef CONFIG_PM |
2816 | ||
2817 | int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
2818 | { | |
2819 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
2820 | ||
2821 | /* | |
2822 | * This function is called when system goes into suspend state | |
2823 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function | |
2824 | * first but since iwl_mac_stop() has no knowledge of who the caller is, | |
2825 | * it will not call apm_ops.stop() to stop the DMA operation. | |
2826 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
2827 | */ | |
2828 | priv->cfg->ops->lib->apm_ops.stop(priv); | |
2829 | ||
2830 | pci_save_state(pdev); | |
2831 | pci_disable_device(pdev); | |
2832 | pci_set_power_state(pdev, PCI_D3hot); | |
2833 | ||
2834 | return 0; | |
2835 | } | |
2836 | EXPORT_SYMBOL(iwl_pci_suspend); | |
2837 | ||
2838 | int iwl_pci_resume(struct pci_dev *pdev) | |
2839 | { | |
2840 | struct iwl_priv *priv = pci_get_drvdata(pdev); | |
2841 | int ret; | |
0ab84cff | 2842 | bool hw_rfkill = false; |
6da3a13e | 2843 | |
cd398c31 AK |
2844 | /* |
2845 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
2846 | * PCI Tx retries from interfering with C3 CPU state. | |
2847 | */ | |
2848 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
2849 | ||
6da3a13e WYG |
2850 | pci_set_power_state(pdev, PCI_D0); |
2851 | ret = pci_enable_device(pdev); | |
2852 | if (ret) | |
2853 | return ret; | |
2854 | pci_restore_state(pdev); | |
2855 | iwl_enable_interrupts(priv); | |
2856 | ||
0ab84cff JB |
2857 | if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
2858 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) | |
2859 | hw_rfkill = true; | |
2860 | ||
2861 | if (hw_rfkill) | |
2862 | set_bit(STATUS_RF_KILL_HW, &priv->status); | |
2863 | else | |
2864 | clear_bit(STATUS_RF_KILL_HW, &priv->status); | |
2865 | ||
2866 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); | |
2867 | ||
6da3a13e WYG |
2868 | return 0; |
2869 | } | |
2870 | EXPORT_SYMBOL(iwl_pci_resume); | |
2871 | ||
2872 | #endif /* CONFIG_PM */ |