1 /******************************************************************************
5 * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
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.
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.
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,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <net/mac80211.h>
33 #include "iwl-eeprom.h"
34 #include "iwl-dev.h" /* FIXME: remove */
35 #include "iwl-debug.h"
38 #include "iwl-rfkill.h"
39 #include "iwl-power.h"
43 MODULE_DESCRIPTION("iwl core");
44 MODULE_VERSION(IWLWIFI_VERSION);
45 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
46 MODULE_LICENSE("GPL");
48 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
49 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
50 IWL_RATE_SISO_##s##M_PLCP, \
51 IWL_RATE_MIMO2_##s##M_PLCP,\
52 IWL_RATE_MIMO3_##s##M_PLCP,\
53 IWL_RATE_##r##M_IEEE, \
54 IWL_RATE_##ip##M_INDEX, \
55 IWL_RATE_##in##M_INDEX, \
56 IWL_RATE_##rp##M_INDEX, \
57 IWL_RATE_##rn##M_INDEX, \
58 IWL_RATE_##pp##M_INDEX, \
59 IWL_RATE_##np##M_INDEX }
63 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
65 * If there isn't a valid next or previous rate then INV is used which
66 * maps to IWL_RATE_INVALID
69 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
70 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
71 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
72 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
73 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
74 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
75 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
76 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
77 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
78 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
79 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
80 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
81 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
82 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
83 /* FIXME:RS: ^^ should be INV (legacy) */
85 EXPORT_SYMBOL(iwl_rates);
88 * translate ucode response to mac80211 tx status control values
90 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
91 struct ieee80211_tx_info *info)
94 struct ieee80211_tx_rate *r = &info->control.rates[0];
96 info->antenna_sel_tx =
97 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
98 if (rate_n_flags & RATE_MCS_HT_MSK)
99 r->flags |= IEEE80211_TX_RC_MCS;
100 if (rate_n_flags & RATE_MCS_GF_MSK)
101 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
102 if (rate_n_flags & RATE_MCS_FAT_MSK)
103 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
104 if (rate_n_flags & RATE_MCS_DUP_MSK)
105 r->flags |= IEEE80211_TX_RC_DUP_DATA;
106 if (rate_n_flags & RATE_MCS_SGI_MSK)
107 r->flags |= IEEE80211_TX_RC_SHORT_GI;
108 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
109 if (info->band == IEEE80211_BAND_5GHZ)
110 rate_index -= IWL_FIRST_OFDM_RATE;
113 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
115 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
120 if (rate_n_flags & RATE_MCS_HT_MSK) {
121 idx = (rate_n_flags & 0xff);
123 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
124 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
125 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
126 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
128 idx += IWL_FIRST_OFDM_RATE;
129 /* skip 9M not supported in ht*/
130 if (idx >= IWL_RATE_9M_INDEX)
132 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
135 /* legacy rate format, search for match in table */
137 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
138 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
144 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
146 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
150 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
151 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
152 if (priv->hw_params.valid_tx_ant & BIT(ind))
158 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
159 EXPORT_SYMBOL(iwl_bcast_addr);
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)
166 struct iwl_priv *priv;
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);
173 printk(KERN_ERR "%s: Can not allocate network device\n",
184 EXPORT_SYMBOL(iwl_alloc_all);
186 void iwl_hw_detect(struct iwl_priv *priv)
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);
192 EXPORT_SYMBOL(iwl_hw_detect);
194 int iwl_hw_nic_init(struct iwl_priv *priv)
197 struct iwl_rx_queue *rxq = &priv->rxq;
201 spin_lock_irqsave(&priv->lock, flags);
202 priv->cfg->ops->lib->apm_ops.init(priv);
203 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
204 spin_unlock_irqrestore(&priv->lock, flags);
206 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
208 priv->cfg->ops->lib->apm_ops.config(priv);
210 /* Allocate the RX queue, or reset if it is already allocated */
212 ret = iwl_rx_queue_alloc(priv);
214 IWL_ERR(priv, "Unable to initialize Rx queue\n");
218 iwl_rx_queue_reset(priv, rxq);
220 iwl_rx_replenish(priv);
222 iwl_rx_init(priv, rxq);
224 spin_lock_irqsave(&priv->lock, flags);
226 rxq->need_update = 1;
227 iwl_rx_queue_update_write_ptr(priv, rxq);
229 spin_unlock_irqrestore(&priv->lock, flags);
231 /* Allocate and init all Tx and Command queues */
232 ret = iwl_txq_ctx_reset(priv);
236 set_bit(STATUS_INIT, &priv->status);
240 EXPORT_SYMBOL(iwl_hw_nic_init);
242 void iwl_reset_qos(struct iwl_priv *priv)
247 bool is_legacy = false;
251 spin_lock_irqsave(&priv->lock, flags);
252 /* QoS always active in AP and ADHOC mode
253 * In STA mode wait for association
255 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
256 priv->iw_mode == NL80211_IFTYPE_AP)
257 priv->qos_data.qos_active = 1;
259 priv->qos_data.qos_active = 0;
261 /* check for legacy mode */
262 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
263 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
264 (priv->iw_mode == NL80211_IFTYPE_STATION &&
265 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
270 if (priv->qos_data.qos_active)
273 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
274 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
275 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
276 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
277 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
279 if (priv->qos_data.qos_active) {
281 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
282 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
283 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
284 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
285 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
288 priv->qos_data.def_qos_parm.ac[i].cw_min =
289 cpu_to_le16((cw_min + 1) / 2 - 1);
290 priv->qos_data.def_qos_parm.ac[i].cw_max =
292 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
294 priv->qos_data.def_qos_parm.ac[i].edca_txop =
297 priv->qos_data.def_qos_parm.ac[i].edca_txop =
299 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
302 priv->qos_data.def_qos_parm.ac[i].cw_min =
303 cpu_to_le16((cw_min + 1) / 4 - 1);
304 priv->qos_data.def_qos_parm.ac[i].cw_max =
305 cpu_to_le16((cw_max + 1) / 2 - 1);
306 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
307 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
309 priv->qos_data.def_qos_parm.ac[i].edca_txop =
312 priv->qos_data.def_qos_parm.ac[i].edca_txop =
315 for (i = 1; i < 4; i++) {
316 priv->qos_data.def_qos_parm.ac[i].cw_min =
318 priv->qos_data.def_qos_parm.ac[i].cw_max =
320 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
321 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
322 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
325 IWL_DEBUG_QOS("set QoS to default \n");
327 spin_unlock_irqrestore(&priv->lock, flags);
329 EXPORT_SYMBOL(iwl_reset_qos);
331 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
332 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
333 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
334 struct ieee80211_sta_ht_cap *ht_info,
335 enum ieee80211_band band)
337 u16 max_bit_rate = 0;
338 u8 rx_chains_num = priv->hw_params.rx_chains_num;
339 u8 tx_chains_num = priv->hw_params.tx_chains_num;
342 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
344 ht_info->ht_supported = true;
346 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
347 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
348 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
349 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
351 max_bit_rate = MAX_BIT_RATE_20_MHZ;
352 if (priv->hw_params.fat_channel & BIT(band)) {
353 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
354 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
355 ht_info->mcs.rx_mask[4] = 0x01;
356 max_bit_rate = MAX_BIT_RATE_40_MHZ;
359 if (priv->cfg->mod_params->amsdu_size_8K)
360 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
362 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
363 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
365 ht_info->mcs.rx_mask[0] = 0xFF;
366 if (rx_chains_num >= 2)
367 ht_info->mcs.rx_mask[1] = 0xFF;
368 if (rx_chains_num >= 3)
369 ht_info->mcs.rx_mask[2] = 0xFF;
371 /* Highest supported Rx data rate */
372 max_bit_rate *= rx_chains_num;
373 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
374 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
376 /* Tx MCS capabilities */
377 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
378 if (tx_chains_num != rx_chains_num) {
379 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
380 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
381 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
385 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
386 struct ieee80211_rate *rates)
390 for (i = 0; i < IWL_RATE_COUNT; i++) {
391 rates[i].bitrate = iwl_rates[i].ieee * 5;
392 rates[i].hw_value = i; /* Rate scaling will work on indexes */
393 rates[i].hw_value_short = i;
395 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
397 * If CCK != 1M then set short preamble rate flag.
400 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
401 0 : IEEE80211_RATE_SHORT_PREAMBLE;
407 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
409 static int iwlcore_init_geos(struct iwl_priv *priv)
411 struct iwl_channel_info *ch;
412 struct ieee80211_supported_band *sband;
413 struct ieee80211_channel *channels;
414 struct ieee80211_channel *geo_ch;
415 struct ieee80211_rate *rates;
418 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
419 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
420 IWL_DEBUG_INFO("Geography modes already initialized.\n");
421 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
425 channels = kzalloc(sizeof(struct ieee80211_channel) *
426 priv->channel_count, GFP_KERNEL);
430 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
437 /* 5.2GHz channels start after the 2.4GHz channels */
438 sband = &priv->bands[IEEE80211_BAND_5GHZ];
439 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
441 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
442 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
444 if (priv->cfg->sku & IWL_SKU_N)
445 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
446 IEEE80211_BAND_5GHZ);
448 sband = &priv->bands[IEEE80211_BAND_2GHZ];
449 sband->channels = channels;
451 sband->bitrates = rates;
452 sband->n_bitrates = IWL_RATE_COUNT;
454 if (priv->cfg->sku & IWL_SKU_N)
455 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
456 IEEE80211_BAND_2GHZ);
458 priv->ieee_channels = channels;
459 priv->ieee_rates = rates;
461 iwlcore_init_hw_rates(priv, rates);
463 for (i = 0; i < priv->channel_count; i++) {
464 ch = &priv->channel_info[i];
466 /* FIXME: might be removed if scan is OK */
467 if (!is_channel_valid(ch))
470 if (is_channel_a_band(ch))
471 sband = &priv->bands[IEEE80211_BAND_5GHZ];
473 sband = &priv->bands[IEEE80211_BAND_2GHZ];
475 geo_ch = &sband->channels[sband->n_channels++];
477 geo_ch->center_freq =
478 ieee80211_channel_to_frequency(ch->channel);
479 geo_ch->max_power = ch->max_power_avg;
480 geo_ch->max_antenna_gain = 0xff;
481 geo_ch->hw_value = ch->channel;
483 if (is_channel_valid(ch)) {
484 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
485 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
487 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
488 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
490 if (ch->flags & EEPROM_CHANNEL_RADAR)
491 geo_ch->flags |= IEEE80211_CHAN_RADAR;
493 geo_ch->flags |= ch->fat_extension_channel;
495 if (ch->max_power_avg > priv->tx_power_channel_lmt)
496 priv->tx_power_channel_lmt = ch->max_power_avg;
498 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
501 /* Save flags for reg domain usage */
502 geo_ch->orig_flags = geo_ch->flags;
504 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
505 ch->channel, geo_ch->center_freq,
506 is_channel_a_band(ch) ? "5.2" : "2.4",
507 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
508 "restricted" : "valid",
512 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
513 priv->cfg->sku & IWL_SKU_A) {
514 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
515 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
516 priv->pci_dev->device,
517 priv->pci_dev->subsystem_device);
518 priv->cfg->sku &= ~IWL_SKU_A;
521 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
522 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
523 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
525 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
531 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
533 static void iwlcore_free_geos(struct iwl_priv *priv)
535 kfree(priv->ieee_channels);
536 kfree(priv->ieee_rates);
537 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
540 static bool is_single_rx_stream(struct iwl_priv *priv)
542 return !priv->current_ht_config.is_ht ||
543 ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
544 (priv->current_ht_config.mcs.rx_mask[2] == 0));
547 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
548 enum ieee80211_band band,
549 u16 channel, u8 extension_chan_offset)
551 const struct iwl_channel_info *ch_info;
553 ch_info = iwl_get_channel_info(priv, band, channel);
554 if (!is_channel_valid(ch_info))
557 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
558 return !(ch_info->fat_extension_channel &
559 IEEE80211_CHAN_NO_FAT_ABOVE);
560 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
561 return !(ch_info->fat_extension_channel &
562 IEEE80211_CHAN_NO_FAT_BELOW);
567 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
568 struct ieee80211_sta_ht_cap *sta_ht_inf)
570 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
572 if ((!iwl_ht_conf->is_ht) ||
573 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
574 (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
578 if ((!sta_ht_inf->ht_supported) ||
579 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
583 return iwl_is_channel_extension(priv, priv->band,
584 le16_to_cpu(priv->staging_rxon.channel),
585 iwl_ht_conf->extension_chan_offset);
587 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
589 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
591 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
594 if (!ht_info->is_ht) {
595 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
596 RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
597 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
598 RXON_FLG_FAT_PROT_MSK |
599 RXON_FLG_HT_PROT_MSK);
603 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
604 if (iwl_is_fat_tx_allowed(priv, NULL))
605 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
607 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
608 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
610 /* Note: control channel is opposite of extension channel */
611 switch (ht_info->extension_chan_offset) {
612 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
613 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
615 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
616 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
618 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
620 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
624 val = ht_info->ht_protection;
626 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
628 iwl_set_rxon_chain(priv);
630 IWL_DEBUG_ASSOC("supported HT rate 0x%X 0x%X 0x%X "
631 "rxon flags 0x%X operation mode :0x%X "
632 "extension channel offset 0x%x\n",
633 ht_info->mcs.rx_mask[0],
634 ht_info->mcs.rx_mask[1],
635 ht_info->mcs.rx_mask[2],
636 le32_to_cpu(rxon->flags), ht_info->ht_protection,
637 ht_info->extension_chan_offset);
640 EXPORT_SYMBOL(iwl_set_rxon_ht);
642 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
643 #define IWL_NUM_RX_CHAINS_SINGLE 2
644 #define IWL_NUM_IDLE_CHAINS_DUAL 2
645 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
647 /* Determine how many receiver/antenna chains to use.
648 * More provides better reception via diversity. Fewer saves power.
649 * MIMO (dual stream) requires at least 2, but works better with 3.
650 * This does not determine *which* chains to use, just how many.
652 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
654 bool is_single = is_single_rx_stream(priv);
655 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
657 /* # of Rx chains to use when expecting MIMO. */
658 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
659 WLAN_HT_CAP_SM_PS_STATIC)))
660 return IWL_NUM_RX_CHAINS_SINGLE;
662 return IWL_NUM_RX_CHAINS_MULTIPLE;
665 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
668 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
669 /* # Rx chains when idling and maybe trying to save power */
670 switch (priv->current_ht_config.sm_ps) {
671 case WLAN_HT_CAP_SM_PS_STATIC:
672 case WLAN_HT_CAP_SM_PS_DYNAMIC:
673 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
674 IWL_NUM_IDLE_CHAINS_SINGLE;
676 case WLAN_HT_CAP_SM_PS_DISABLED:
677 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
679 case WLAN_HT_CAP_SM_PS_INVALID:
681 IWL_ERR(priv, "invalid mimo ps mode %d\n",
682 priv->current_ht_config.sm_ps);
691 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
694 res = (chain_bitmap & BIT(0)) >> 0;
695 res += (chain_bitmap & BIT(1)) >> 1;
696 res += (chain_bitmap & BIT(2)) >> 2;
697 res += (chain_bitmap & BIT(4)) >> 4;
702 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
704 * Selects how many and which Rx receivers/antennas/chains to use.
705 * This should not be used for scan command ... it puts data in wrong place.
707 void iwl_set_rxon_chain(struct iwl_priv *priv)
709 bool is_single = is_single_rx_stream(priv);
710 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
711 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
715 /* Tell uCode which antennas are actually connected.
716 * Before first association, we assume all antennas are connected.
717 * Just after first association, iwl_chain_noise_calibration()
718 * checks which antennas actually *are* connected. */
719 if (priv->chain_noise_data.active_chains)
720 active_chains = priv->chain_noise_data.active_chains;
722 active_chains = priv->hw_params.valid_rx_ant;
724 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
726 /* How many receivers should we use? */
727 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
728 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
731 /* correct rx chain count according hw settings
732 * and chain noise calibration
734 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
735 if (valid_rx_cnt < active_rx_cnt)
736 active_rx_cnt = valid_rx_cnt;
738 if (valid_rx_cnt < idle_rx_cnt)
739 idle_rx_cnt = valid_rx_cnt;
741 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
742 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
744 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
746 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
747 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
749 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
751 IWL_DEBUG_ASSOC("rx_chain=0x%X active=%d idle=%d\n",
752 priv->staging_rxon.rx_chain,
753 active_rx_cnt, idle_rx_cnt);
755 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
756 active_rx_cnt < idle_rx_cnt);
758 EXPORT_SYMBOL(iwl_set_rxon_chain);
761 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
762 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
763 * @channel: Any channel valid for the requested phymode
765 * In addition to setting the staging RXON, priv->phymode is also set.
767 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
768 * in the staging RXON flag structure based on the phymode
770 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
772 enum ieee80211_band band = ch->band;
773 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
775 if (!iwl_get_channel_info(priv, band, channel)) {
776 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
781 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
782 (priv->band == band))
785 priv->staging_rxon.channel = cpu_to_le16(channel);
786 if (band == IEEE80211_BAND_5GHZ)
787 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
789 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
793 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
797 EXPORT_SYMBOL(iwl_set_rxon_channel);
799 int iwl_setup_mac(struct iwl_priv *priv)
802 struct ieee80211_hw *hw = priv->hw;
803 hw->rate_control_algorithm = "iwl-agn-rs";
805 /* Tell mac80211 our characteristics */
806 hw->flags = IEEE80211_HW_SIGNAL_DBM |
807 IEEE80211_HW_NOISE_DBM |
808 IEEE80211_HW_AMPDU_AGGREGATION |
809 IEEE80211_HW_SUPPORTS_PS;
810 hw->wiphy->interface_modes =
811 BIT(NL80211_IFTYPE_STATION) |
812 BIT(NL80211_IFTYPE_ADHOC);
814 hw->wiphy->fw_handles_regulatory = true;
816 /* Default value; 4 EDCA QOS priorities */
818 /* queues to support 11n aggregation */
819 if (priv->cfg->sku & IWL_SKU_N)
820 hw->ampdu_queues = priv->cfg->mod_params->num_of_ampdu_queues;
822 hw->conf.beacon_int = 100;
823 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
825 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
826 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
827 &priv->bands[IEEE80211_BAND_2GHZ];
828 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
829 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
830 &priv->bands[IEEE80211_BAND_5GHZ];
832 ret = ieee80211_register_hw(priv->hw);
834 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
837 priv->mac80211_registered = 1;
841 EXPORT_SYMBOL(iwl_setup_mac);
843 int iwl_set_hw_params(struct iwl_priv *priv)
845 priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
846 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
847 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
848 if (priv->cfg->mod_params->amsdu_size_8K)
849 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
851 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
852 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
854 if (priv->cfg->mod_params->disable_11n)
855 priv->cfg->sku &= ~IWL_SKU_N;
857 /* Device-specific setup */
858 return priv->cfg->ops->lib->set_hw_params(priv);
860 EXPORT_SYMBOL(iwl_set_hw_params);
862 int iwl_init_drv(struct iwl_priv *priv)
866 priv->ibss_beacon = NULL;
868 spin_lock_init(&priv->lock);
869 spin_lock_init(&priv->power_data.lock);
870 spin_lock_init(&priv->sta_lock);
871 spin_lock_init(&priv->hcmd_lock);
873 INIT_LIST_HEAD(&priv->free_frames);
875 mutex_init(&priv->mutex);
877 /* Clear the driver's (not device's) station table */
878 iwl_clear_stations_table(priv);
880 priv->data_retry_limit = -1;
881 priv->ieee_channels = NULL;
882 priv->ieee_rates = NULL;
883 priv->band = IEEE80211_BAND_2GHZ;
885 priv->iw_mode = NL80211_IFTYPE_STATION;
887 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
889 /* Choose which receivers/antennas to use */
890 iwl_set_rxon_chain(priv);
891 iwl_init_scan_params(priv);
895 priv->qos_data.qos_active = 0;
896 priv->qos_data.qos_cap.val = 0;
898 priv->rates_mask = IWL_RATES_MASK;
899 /* If power management is turned on, default to AC mode */
900 priv->power_mode = IWL_POWER_AC;
901 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
903 ret = iwl_init_channel_map(priv);
905 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
909 ret = iwlcore_init_geos(priv);
911 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
912 goto err_free_channel_map;
917 err_free_channel_map:
918 iwl_free_channel_map(priv);
922 EXPORT_SYMBOL(iwl_init_drv);
924 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
927 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
928 IWL_WARN(priv, "Requested user TXPOWER %d below limit.\n",
929 priv->tx_power_user_lmt);
933 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
934 IWL_WARN(priv, "Requested user TXPOWER %d above limit.\n",
935 priv->tx_power_user_lmt);
939 if (priv->tx_power_user_lmt != tx_power)
942 priv->tx_power_user_lmt = tx_power;
944 if (force && priv->cfg->ops->lib->send_tx_power)
945 ret = priv->cfg->ops->lib->send_tx_power(priv);
949 EXPORT_SYMBOL(iwl_set_tx_power);
951 void iwl_uninit_drv(struct iwl_priv *priv)
953 iwl_calib_free_results(priv);
954 iwlcore_free_geos(priv);
955 iwl_free_channel_map(priv);
958 EXPORT_SYMBOL(iwl_uninit_drv);
961 void iwl_disable_interrupts(struct iwl_priv *priv)
963 clear_bit(STATUS_INT_ENABLED, &priv->status);
965 /* disable interrupts from uCode/NIC to host */
966 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
968 /* acknowledge/clear/reset any interrupts still pending
969 * from uCode or flow handler (Rx/Tx DMA) */
970 iwl_write32(priv, CSR_INT, 0xffffffff);
971 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
972 IWL_DEBUG_ISR("Disabled interrupts\n");
974 EXPORT_SYMBOL(iwl_disable_interrupts);
976 void iwl_enable_interrupts(struct iwl_priv *priv)
978 IWL_DEBUG_ISR("Enabling interrupts\n");
979 set_bit(STATUS_INT_ENABLED, &priv->status);
980 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
982 EXPORT_SYMBOL(iwl_enable_interrupts);
984 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
987 struct iwl_host_cmd cmd = {
988 .id = REPLY_STATISTICS_CMD,
990 .len = sizeof(stat_flags),
991 .data = (u8 *) &stat_flags,
993 return iwl_send_cmd(priv, &cmd);
995 EXPORT_SYMBOL(iwl_send_statistics_request);
998 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
999 * using sample data 100 bytes apart. If these sample points are good,
1000 * it's a pretty good bet that everything between them is good, too.
1002 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1009 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1011 ret = iwl_grab_nic_access(priv);
1015 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1016 /* read data comes through single port, auto-incr addr */
1017 /* NOTE: Use the debugless read so we don't flood kernel log
1018 * if IWL_DL_IO is set */
1019 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1020 i + IWL49_RTC_INST_LOWER_BOUND);
1021 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1022 if (val != le32_to_cpu(*image)) {
1030 iwl_release_nic_access(priv);
1036 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1037 * looking at all data.
1039 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1047 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1049 ret = iwl_grab_nic_access(priv);
1053 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1054 IWL49_RTC_INST_LOWER_BOUND);
1057 for (; len > 0; len -= sizeof(u32), image++) {
1058 /* read data comes through single port, auto-incr addr */
1059 /* NOTE: Use the debugless read so we don't flood kernel log
1060 * if IWL_DL_IO is set */
1061 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1062 if (val != le32_to_cpu(*image)) {
1063 IWL_ERR(priv, "uCode INST section is invalid at "
1064 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1065 save_len - len, val, le32_to_cpu(*image));
1073 iwl_release_nic_access(priv);
1077 ("ucode image in INSTRUCTION memory is good\n");
1083 * iwl_verify_ucode - determine which instruction image is in SRAM,
1084 * and verify its contents
1086 int iwl_verify_ucode(struct iwl_priv *priv)
1093 image = (__le32 *)priv->ucode_boot.v_addr;
1094 len = priv->ucode_boot.len;
1095 ret = iwlcore_verify_inst_sparse(priv, image, len);
1097 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
1101 /* Try initialize */
1102 image = (__le32 *)priv->ucode_init.v_addr;
1103 len = priv->ucode_init.len;
1104 ret = iwlcore_verify_inst_sparse(priv, image, len);
1106 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
1110 /* Try runtime/protocol */
1111 image = (__le32 *)priv->ucode_code.v_addr;
1112 len = priv->ucode_code.len;
1113 ret = iwlcore_verify_inst_sparse(priv, image, len);
1115 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
1119 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1121 /* Since nothing seems to match, show first several data entries in
1122 * instruction SRAM, so maybe visual inspection will give a clue.
1123 * Selection of bootstrap image (vs. other images) is arbitrary. */
1124 image = (__le32 *)priv->ucode_boot.v_addr;
1125 len = priv->ucode_boot.len;
1126 ret = iwl_verify_inst_full(priv, image, len);
1130 EXPORT_SYMBOL(iwl_verify_ucode);
1133 static const char *desc_lookup_text[] = {
1138 "NMI_INTERRUPT_WDG",
1142 "HW_ERROR_TUNE_LOCK",
1143 "HW_ERROR_TEMPERATURE",
1144 "ILLEGAL_CHAN_FREQ",
1147 "NMI_INTERRUPT_HOST",
1148 "NMI_INTERRUPT_ACTION_PT",
1149 "NMI_INTERRUPT_UNKNOWN",
1150 "UCODE_VERSION_MISMATCH",
1151 "HW_ERROR_ABS_LOCK",
1152 "HW_ERROR_CAL_LOCK_FAIL",
1153 "NMI_INTERRUPT_INST_ACTION_PT",
1154 "NMI_INTERRUPT_DATA_ACTION_PT",
1156 "NMI_INTERRUPT_TRM",
1157 "NMI_INTERRUPT_BREAK_POINT"
1165 static const char *desc_lookup(int i)
1167 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1169 if (i < 0 || i > max)
1172 return desc_lookup_text[i];
1175 #define ERROR_START_OFFSET (1 * sizeof(u32))
1176 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1178 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1181 u32 desc, time, count, base, data1;
1182 u32 blink1, blink2, ilink1, ilink2;
1185 if (priv->ucode_type == UCODE_INIT)
1186 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1188 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1190 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1191 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1195 ret = iwl_grab_nic_access(priv);
1197 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1201 count = iwl_read_targ_mem(priv, base);
1203 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1204 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1205 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1206 priv->status, count);
1209 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1210 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1211 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1212 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1213 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1214 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1215 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1216 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1217 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1219 IWL_ERR(priv, "Desc Time "
1220 "data1 data2 line\n");
1221 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1222 desc_lookup(desc), desc, time, data1, data2, line);
1223 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1224 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1227 iwl_release_nic_access(priv);
1229 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1231 #define EVENT_START_OFFSET (4 * sizeof(u32))
1234 * iwl_print_event_log - Dump error event log to syslog
1236 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1238 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1239 u32 num_events, u32 mode)
1242 u32 base; /* SRAM byte address of event log header */
1243 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1244 u32 ptr; /* SRAM byte address of log data */
1245 u32 ev, time, data; /* event log data */
1247 if (num_events == 0)
1249 if (priv->ucode_type == UCODE_INIT)
1250 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1252 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1255 event_size = 2 * sizeof(u32);
1257 event_size = 3 * sizeof(u32);
1259 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1261 /* "time" is actually "data" for mode 0 (no timestamp).
1262 * place event id # at far right for easier visual parsing. */
1263 for (i = 0; i < num_events; i++) {
1264 ev = iwl_read_targ_mem(priv, ptr);
1266 time = iwl_read_targ_mem(priv, ptr);
1270 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1272 data = iwl_read_targ_mem(priv, ptr);
1274 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1280 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1283 u32 base; /* SRAM byte address of event log header */
1284 u32 capacity; /* event log capacity in # entries */
1285 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1286 u32 num_wraps; /* # times uCode wrapped to top of log */
1287 u32 next_entry; /* index of next entry to be written by uCode */
1288 u32 size; /* # entries that we'll print */
1290 if (priv->ucode_type == UCODE_INIT)
1291 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1293 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1295 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1296 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1300 ret = iwl_grab_nic_access(priv);
1302 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1306 /* event log header */
1307 capacity = iwl_read_targ_mem(priv, base);
1308 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1309 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1310 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1312 size = num_wraps ? capacity : next_entry;
1314 /* bail out if nothing in log */
1316 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1317 iwl_release_nic_access(priv);
1321 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1324 /* if uCode has wrapped back to top of log, start at the oldest entry,
1325 * i.e the next one that uCode would fill. */
1327 iwl_print_event_log(priv, next_entry,
1328 capacity - next_entry, mode);
1329 /* (then/else) start at top of log */
1330 iwl_print_event_log(priv, 0, next_entry, mode);
1332 iwl_release_nic_access(priv);
1334 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1336 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1338 struct iwl_ct_kill_config cmd;
1339 unsigned long flags;
1342 spin_lock_irqsave(&priv->lock, flags);
1343 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1344 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1345 spin_unlock_irqrestore(&priv->lock, flags);
1347 cmd.critical_temperature_R =
1348 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1350 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1353 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1355 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
1356 "critical temperature is %d\n",
1357 cmd.critical_temperature_R);
1359 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1365 * Use: Sets the device's internal card state to enable, disable, or halt
1367 * When in the 'enable' state the card operates as normal.
1368 * When in the 'disable' state, the card enters into a low power mode.
1369 * When in the 'halt' state, the card is shut down and must be fully
1370 * restarted to come back on.
1372 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1374 struct iwl_host_cmd cmd = {
1375 .id = REPLY_CARD_STATE_CMD,
1378 .meta.flags = meta_flag,
1381 return iwl_send_cmd(priv, &cmd);
1383 EXPORT_SYMBOL(iwl_send_card_state);
1385 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1387 unsigned long flags;
1389 if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1392 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO OFF\n");
1394 iwl_scan_cancel(priv);
1395 /* FIXME: This is a workaround for AP */
1396 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1397 spin_lock_irqsave(&priv->lock, flags);
1398 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1399 CSR_UCODE_SW_BIT_RFKILL);
1400 spin_unlock_irqrestore(&priv->lock, flags);
1401 /* call the host command only if no hw rf-kill set */
1402 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1404 iwl_send_card_state(priv,
1405 CARD_STATE_CMD_DISABLE, 0);
1406 set_bit(STATUS_RF_KILL_SW, &priv->status);
1407 /* make sure mac80211 stop sending Tx frame */
1408 if (priv->mac80211_registered)
1409 ieee80211_stop_queues(priv->hw);
1412 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1414 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1416 unsigned long flags;
1418 if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1421 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO ON\n");
1423 spin_lock_irqsave(&priv->lock, flags);
1424 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1426 /* If the driver is up it will receive CARD_STATE_NOTIFICATION
1427 * notification where it will clear SW rfkill status.
1428 * Setting it here would break the handler. Only if the
1429 * interface is down we can set here since we don't
1430 * receive any further notification.
1433 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1434 spin_unlock_irqrestore(&priv->lock, flags);
1439 spin_lock_irqsave(&priv->lock, flags);
1440 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1441 if (!iwl_grab_nic_access(priv))
1442 iwl_release_nic_access(priv);
1443 spin_unlock_irqrestore(&priv->lock, flags);
1445 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1446 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1447 "disabled by HW switch\n");
1451 /* when driver is up while rfkill is on, it wont receive
1452 * any CARD_STATE_NOTIFICATION notifications so we have to
1453 * restart it in here
1455 if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
1456 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1457 if (!iwl_is_rfkill(priv))
1458 queue_work(priv->workqueue, &priv->up);
1461 /* If the driver is already loaded, it will receive
1462 * CARD_STATE_NOTIFICATION notifications and the handler will
1463 * call restart to reload the driver.
1467 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);