1 /******************************************************************************
5 * Copyright(c) 2008 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 * Tomas Winkler <tomas.winkler@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 <linux/version.h>
32 #include <net/mac80211.h>
34 struct iwl_priv; /* FIXME: remove */
35 #include "iwl-debug.h"
36 #include "iwl-eeprom.h"
37 #include "iwl-dev.h" /* FIXME: remove */
40 #include "iwl-rfkill.h"
41 #include "iwl-power.h"
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT);
47 MODULE_LICENSE("GPL");
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
50 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
51 IWL_RATE_SISO_##s##M_PLCP, \
52 IWL_RATE_MIMO2_##s##M_PLCP,\
53 IWL_RATE_MIMO3_##s##M_PLCP,\
54 IWL_RATE_##r##M_IEEE, \
55 IWL_RATE_##ip##M_INDEX, \
56 IWL_RATE_##in##M_INDEX, \
57 IWL_RATE_##rp##M_INDEX, \
58 IWL_RATE_##rn##M_INDEX, \
59 IWL_RATE_##pp##M_INDEX, \
60 IWL_RATE_##np##M_INDEX }
64 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
66 * If there isn't a valid next or previous rate then INV is used which
67 * maps to IWL_RATE_INVALID
70 const struct iwl4965_rate_info iwl4965_rates[IWL_RATE_COUNT] = {
71 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
72 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
73 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
74 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
75 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
76 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
77 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
78 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
79 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
80 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
81 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
82 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
83 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
84 /* FIXME:RS: ^^ should be INV (legacy) */
86 EXPORT_SYMBOL(iwl4965_rates);
88 /* This function both allocates and initializes hw and priv. */
89 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
90 struct ieee80211_ops *hw_ops)
92 struct iwl_priv *priv;
94 /* mac80211 allocates memory for this device instance, including
95 * space for this driver's private structure */
96 struct ieee80211_hw *hw =
97 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
99 IWL_ERROR("Can not allocate network device\n");
109 EXPORT_SYMBOL(iwl_alloc_all);
111 void iwl_hw_detect(struct iwl_priv *priv)
113 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
114 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
115 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
117 EXPORT_SYMBOL(iwl_hw_detect);
119 /* Tell nic where to find the "keep warm" buffer */
120 int iwl_kw_init(struct iwl_priv *priv)
125 spin_lock_irqsave(&priv->lock, flags);
126 ret = iwl_grab_nic_access(priv);
130 iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG,
131 priv->kw.dma_addr >> 4);
132 iwl_release_nic_access(priv);
134 spin_unlock_irqrestore(&priv->lock, flags);
138 int iwl_kw_alloc(struct iwl_priv *priv)
140 struct pci_dev *dev = priv->pci_dev;
141 struct iwl_kw *kw = &priv->kw;
143 kw->size = IWL_KW_SIZE;
144 kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
152 * iwl_kw_free - Free the "keep warm" buffer
154 void iwl_kw_free(struct iwl_priv *priv)
156 struct pci_dev *dev = priv->pci_dev;
157 struct iwl_kw *kw = &priv->kw;
160 pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
161 memset(kw, 0, sizeof(*kw));
165 int iwl_hw_nic_init(struct iwl_priv *priv)
168 struct iwl_rx_queue *rxq = &priv->rxq;
172 spin_lock_irqsave(&priv->lock, flags);
173 priv->cfg->ops->lib->apm_ops.init(priv);
174 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
175 spin_unlock_irqrestore(&priv->lock, flags);
177 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
179 priv->cfg->ops->lib->apm_ops.config(priv);
181 /* Allocate the RX queue, or reset if it is already allocated */
183 ret = iwl_rx_queue_alloc(priv);
185 IWL_ERROR("Unable to initialize Rx queue\n");
189 iwl_rx_queue_reset(priv, rxq);
191 iwl_rx_replenish(priv);
193 iwl_rx_init(priv, rxq);
195 spin_lock_irqsave(&priv->lock, flags);
197 rxq->need_update = 1;
198 iwl_rx_queue_update_write_ptr(priv, rxq);
200 spin_unlock_irqrestore(&priv->lock, flags);
202 /* Allocate and init all Tx and Command queues */
203 ret = iwl_txq_ctx_reset(priv);
207 set_bit(STATUS_INIT, &priv->status);
211 EXPORT_SYMBOL(iwl_hw_nic_init);
214 * iwlcore_clear_stations_table - Clear the driver's station table
216 * NOTE: This does not clear or otherwise alter the device's station table.
218 void iwlcore_clear_stations_table(struct iwl_priv *priv)
222 spin_lock_irqsave(&priv->sta_lock, flags);
224 priv->num_stations = 0;
225 memset(priv->stations, 0, sizeof(priv->stations));
227 spin_unlock_irqrestore(&priv->sta_lock, flags);
229 EXPORT_SYMBOL(iwlcore_clear_stations_table);
231 void iwl_reset_qos(struct iwl_priv *priv)
240 spin_lock_irqsave(&priv->lock, flags);
241 priv->qos_data.qos_active = 0;
243 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
244 if (priv->qos_data.qos_enable)
245 priv->qos_data.qos_active = 1;
246 if (!(priv->active_rate & 0xfff0)) {
250 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
251 if (priv->qos_data.qos_enable)
252 priv->qos_data.qos_active = 1;
253 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
258 if (priv->qos_data.qos_active)
261 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
262 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
263 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
264 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
265 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
267 if (priv->qos_data.qos_active) {
269 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
270 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
271 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
272 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
273 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
276 priv->qos_data.def_qos_parm.ac[i].cw_min =
277 cpu_to_le16((cw_min + 1) / 2 - 1);
278 priv->qos_data.def_qos_parm.ac[i].cw_max =
280 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
282 priv->qos_data.def_qos_parm.ac[i].edca_txop =
285 priv->qos_data.def_qos_parm.ac[i].edca_txop =
287 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
290 priv->qos_data.def_qos_parm.ac[i].cw_min =
291 cpu_to_le16((cw_min + 1) / 4 - 1);
292 priv->qos_data.def_qos_parm.ac[i].cw_max =
293 cpu_to_le16((cw_max + 1) / 2 - 1);
294 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
295 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
297 priv->qos_data.def_qos_parm.ac[i].edca_txop =
300 priv->qos_data.def_qos_parm.ac[i].edca_txop =
303 for (i = 1; i < 4; i++) {
304 priv->qos_data.def_qos_parm.ac[i].cw_min =
306 priv->qos_data.def_qos_parm.ac[i].cw_max =
308 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
309 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
310 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
313 IWL_DEBUG_QOS("set QoS to default \n");
315 spin_unlock_irqrestore(&priv->lock, flags);
317 EXPORT_SYMBOL(iwl_reset_qos);
319 #ifdef CONFIG_IWL4965_HT
320 #define MAX_BIT_RATE_40_MHZ 0x96; /* 150 Mbps */
321 #define MAX_BIT_RATE_20_MHZ 0x48; /* 72 Mbps */
322 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
323 struct ieee80211_ht_info *ht_info,
324 enum ieee80211_band band)
326 u16 max_bit_rate = 0;
327 u8 rx_chains_num = priv->hw_params.rx_chains_num;
328 u8 tx_chains_num = priv->hw_params.tx_chains_num;
331 memset(ht_info->supp_mcs_set, 0, 16);
333 ht_info->ht_supported = 1;
335 ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
336 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
337 ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
338 (IWL_MIMO_PS_NONE << 2));
340 max_bit_rate = MAX_BIT_RATE_20_MHZ;
341 if (priv->hw_params.fat_channel & BIT(band)) {
342 ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH;
343 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40;
344 ht_info->supp_mcs_set[4] = 0x01;
345 max_bit_rate = MAX_BIT_RATE_40_MHZ;
348 if (priv->cfg->mod_params->amsdu_size_8K)
349 ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU;
351 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
352 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
354 ht_info->supp_mcs_set[0] = 0xFF;
355 if (rx_chains_num >= 2)
356 ht_info->supp_mcs_set[1] = 0xFF;
357 if (rx_chains_num >= 3)
358 ht_info->supp_mcs_set[2] = 0xFF;
360 /* Highest supported Rx data rate */
361 max_bit_rate *= rx_chains_num;
362 ht_info->supp_mcs_set[10] = (u8)(max_bit_rate & 0x00FF);
363 ht_info->supp_mcs_set[11] = (u8)((max_bit_rate & 0xFF00) >> 8);
365 /* Tx MCS capabilities */
366 ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
367 if (tx_chains_num != rx_chains_num) {
368 ht_info->supp_mcs_set[12] |= IEEE80211_HT_CAP_MCS_TX_RX_DIFF;
369 ht_info->supp_mcs_set[12] |= ((tx_chains_num - 1) << 2);
373 static inline void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
374 struct ieee80211_ht_info *ht_info,
375 enum ieee80211_band band)
378 #endif /* CONFIG_IWL4965_HT */
380 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
381 struct ieee80211_rate *rates)
385 for (i = 0; i < IWL_RATE_COUNT; i++) {
386 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
387 rates[i].hw_value = i; /* Rate scaling will work on indexes */
388 rates[i].hw_value_short = i;
390 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
392 * If CCK != 1M then set short preamble rate flag.
395 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
396 0 : IEEE80211_RATE_SHORT_PREAMBLE;
402 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
404 static int iwlcore_init_geos(struct iwl_priv *priv)
406 struct iwl_channel_info *ch;
407 struct ieee80211_supported_band *sband;
408 struct ieee80211_channel *channels;
409 struct ieee80211_channel *geo_ch;
410 struct ieee80211_rate *rates;
413 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
414 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
415 IWL_DEBUG_INFO("Geography modes already initialized.\n");
416 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
420 channels = kzalloc(sizeof(struct ieee80211_channel) *
421 priv->channel_count, GFP_KERNEL);
425 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
432 /* 5.2GHz channels start after the 2.4GHz channels */
433 sband = &priv->bands[IEEE80211_BAND_5GHZ];
434 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
436 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
437 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
439 iwlcore_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
441 sband = &priv->bands[IEEE80211_BAND_2GHZ];
442 sband->channels = channels;
444 sband->bitrates = rates;
445 sband->n_bitrates = IWL_RATE_COUNT;
447 iwlcore_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
449 priv->ieee_channels = channels;
450 priv->ieee_rates = rates;
452 iwlcore_init_hw_rates(priv, rates);
454 for (i = 0; i < priv->channel_count; i++) {
455 ch = &priv->channel_info[i];
457 /* FIXME: might be removed if scan is OK */
458 if (!is_channel_valid(ch))
461 if (is_channel_a_band(ch))
462 sband = &priv->bands[IEEE80211_BAND_5GHZ];
464 sband = &priv->bands[IEEE80211_BAND_2GHZ];
466 geo_ch = &sband->channels[sband->n_channels++];
468 geo_ch->center_freq =
469 ieee80211_channel_to_frequency(ch->channel);
470 geo_ch->max_power = ch->max_power_avg;
471 geo_ch->max_antenna_gain = 0xff;
472 geo_ch->hw_value = ch->channel;
474 if (is_channel_valid(ch)) {
475 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
476 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
478 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
479 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
481 if (ch->flags & EEPROM_CHANNEL_RADAR)
482 geo_ch->flags |= IEEE80211_CHAN_RADAR;
484 if (ch->max_power_avg > priv->max_channel_txpower_limit)
485 priv->max_channel_txpower_limit =
488 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
491 /* Save flags for reg domain usage */
492 geo_ch->orig_flags = geo_ch->flags;
494 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
495 ch->channel, geo_ch->center_freq,
496 is_channel_a_band(ch) ? "5.2" : "2.4",
497 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
498 "restricted" : "valid",
502 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
503 priv->cfg->sku & IWL_SKU_A) {
504 printk(KERN_INFO DRV_NAME
505 ": Incorrectly detected BG card as ABG. Please send "
506 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
507 priv->pci_dev->device, priv->pci_dev->subsystem_device);
508 priv->cfg->sku &= ~IWL_SKU_A;
511 printk(KERN_INFO DRV_NAME
512 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
513 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
514 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
516 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
517 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
518 &priv->bands[IEEE80211_BAND_2GHZ];
519 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
520 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
521 &priv->bands[IEEE80211_BAND_5GHZ];
523 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
529 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
531 void iwlcore_free_geos(struct iwl_priv *priv)
533 kfree(priv->ieee_channels);
534 kfree(priv->ieee_rates);
535 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
537 EXPORT_SYMBOL(iwlcore_free_geos);
539 #ifdef CONFIG_IWL4965_HT
540 static u8 is_single_rx_stream(struct iwl_priv *priv)
542 return !priv->current_ht_config.is_ht ||
543 ((priv->current_ht_config.supp_mcs_set[1] == 0) &&
544 (priv->current_ht_config.supp_mcs_set[2] == 0)) ||
545 priv->ps_mode == IWL_MIMO_PS_STATIC;
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 == IWL_EXT_CHANNEL_OFFSET_NONE)
560 if ((ch_info->fat_extension_channel == extension_chan_offset) ||
561 (ch_info->fat_extension_channel == HT_IE_EXT_CHANNEL_MAX))
567 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
568 struct ieee80211_ht_info *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 == IWL_EXT_CHANNEL_OFFSET_NONE))
578 if ((!sta_ht_inf->ht_supported) ||
579 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)))
583 return iwl_is_channel_extension(priv, priv->band,
584 iwl_ht_conf->control_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;
597 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
598 if (iwl_is_fat_tx_allowed(priv, NULL))
599 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
601 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
602 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
604 if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
605 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
606 le16_to_cpu(rxon->channel),
607 ht_info->control_channel);
608 rxon->channel = cpu_to_le16(ht_info->control_channel);
612 /* Note: control channel is opposite of extension channel */
613 switch (ht_info->extension_chan_offset) {
614 case IWL_EXT_CHANNEL_OFFSET_ABOVE:
615 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
617 case IWL_EXT_CHANNEL_OFFSET_BELOW:
618 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
620 case IWL_EXT_CHANNEL_OFFSET_NONE:
622 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
626 val = ht_info->ht_protection;
628 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
630 iwl_set_rxon_chain(priv);
632 IWL_DEBUG_ASSOC("supported HT rate 0x%X 0x%X 0x%X "
633 "rxon flags 0x%X operation mode :0x%X "
634 "extension channel offset 0x%x "
636 ht_info->supp_mcs_set[0],
637 ht_info->supp_mcs_set[1],
638 ht_info->supp_mcs_set[2],
639 le32_to_cpu(rxon->flags), ht_info->ht_protection,
640 ht_info->extension_chan_offset,
641 ht_info->control_channel);
644 EXPORT_SYMBOL(iwl_set_rxon_ht);
647 static inline u8 is_single_rx_stream(struct iwl_priv *priv)
651 #endif /*CONFIG_IWL4965_HT */
654 * Determine how many receiver/antenna chains to use.
655 * More provides better reception via diversity. Fewer saves power.
656 * MIMO (dual stream) requires at least 2, but works better with 3.
657 * This does not determine *which* chains to use, just how many.
659 static int iwlcore_get_rx_chain_counter(struct iwl_priv *priv,
660 u8 *idle_state, u8 *rx_state)
662 u8 is_single = is_single_rx_stream(priv);
663 u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1;
665 /* # of Rx chains to use when expecting MIMO. */
666 if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
671 /* # Rx chains when idling and maybe trying to save power */
672 switch (priv->ps_mode) {
673 case IWL_MIMO_PS_STATIC:
674 case IWL_MIMO_PS_DYNAMIC:
675 *idle_state = (is_cam) ? 2 : 1;
677 case IWL_MIMO_PS_NONE:
678 *idle_state = (is_cam) ? *rx_state : 1;
689 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
691 * Selects how many and which Rx receivers/antennas/chains to use.
692 * This should not be used for scan command ... it puts data in wrong place.
694 void iwl_set_rxon_chain(struct iwl_priv *priv)
696 u8 is_single = is_single_rx_stream(priv);
697 u8 idle_state, rx_state;
699 priv->staging_rxon.rx_chain = 0;
700 rx_state = idle_state = 3;
702 /* Tell uCode which antennas are actually connected.
703 * Before first association, we assume all antennas are connected.
704 * Just after first association, iwl_chain_noise_calibration()
705 * checks which antennas actually *are* connected. */
706 priv->staging_rxon.rx_chain |=
707 cpu_to_le16(priv->hw_params.valid_rx_ant <<
708 RXON_RX_CHAIN_VALID_POS);
710 /* How many receivers should we use? */
711 iwlcore_get_rx_chain_counter(priv, &idle_state, &rx_state);
712 priv->staging_rxon.rx_chain |=
713 cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS);
714 priv->staging_rxon.rx_chain |=
715 cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS);
717 if (!is_single && (rx_state >= 2) &&
718 !test_bit(STATUS_POWER_PMI, &priv->status))
719 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
721 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
723 IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain);
725 EXPORT_SYMBOL(iwl_set_rxon_chain);
728 * iwlcore_set_rxon_channel - Set the phymode and channel values in staging RXON
729 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
730 * @channel: Any channel valid for the requested phymode
732 * In addition to setting the staging RXON, priv->phymode is also set.
734 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
735 * in the staging RXON flag structure based on the phymode
737 int iwl_set_rxon_channel(struct iwl_priv *priv,
738 enum ieee80211_band band,
741 if (!iwl_get_channel_info(priv, band, channel)) {
742 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
747 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
748 (priv->band == band))
751 priv->staging_rxon.channel = cpu_to_le16(channel);
752 if (band == IEEE80211_BAND_5GHZ)
753 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
755 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
759 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
763 EXPORT_SYMBOL(iwl_set_rxon_channel);
765 static void iwlcore_init_hw(struct iwl_priv *priv)
767 struct ieee80211_hw *hw = priv->hw;
768 hw->rate_control_algorithm = "iwl-4965-rs";
770 /* Tell mac80211 our characteristics */
771 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
772 IEEE80211_HW_SIGNAL_DBM |
773 IEEE80211_HW_NOISE_DBM;
774 /* Default value; 4 EDCA QOS priorities */
776 #ifdef CONFIG_IWL4965_HT
777 /* Enhanced value; more queues, to support 11n aggregation */
778 hw->ampdu_queues = 12;
779 #endif /* CONFIG_IWL4965_HT */
782 static int iwlcore_init_drv(struct iwl_priv *priv)
787 priv->retry_rate = 1;
788 priv->ibss_beacon = NULL;
790 spin_lock_init(&priv->lock);
791 spin_lock_init(&priv->power_data.lock);
792 spin_lock_init(&priv->sta_lock);
793 spin_lock_init(&priv->hcmd_lock);
794 spin_lock_init(&priv->lq_mngr.lock);
796 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
797 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
799 INIT_LIST_HEAD(&priv->free_frames);
801 mutex_init(&priv->mutex);
803 /* Clear the driver's (not device's) station table */
804 iwlcore_clear_stations_table(priv);
806 priv->data_retry_limit = -1;
807 priv->ieee_channels = NULL;
808 priv->ieee_rates = NULL;
809 priv->band = IEEE80211_BAND_2GHZ;
811 priv->iw_mode = IEEE80211_IF_TYPE_STA;
813 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
814 priv->ps_mode = IWL_MIMO_PS_NONE;
816 /* Choose which receivers/antennas to use */
817 iwl_set_rxon_chain(priv);
821 priv->qos_data.qos_active = 0;
822 priv->qos_data.qos_cap.val = 0;
824 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
826 priv->rates_mask = IWL_RATES_MASK;
827 /* If power management is turned on, default to AC mode */
828 priv->power_mode = IWL_POWER_AC;
829 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
831 ret = iwl_init_channel_map(priv);
833 IWL_ERROR("initializing regulatory failed: %d\n", ret);
837 ret = iwlcore_init_geos(priv);
839 IWL_ERROR("initializing geos failed: %d\n", ret);
840 goto err_free_channel_map;
843 ret = ieee80211_register_hw(priv->hw);
845 IWL_ERROR("Failed to register network device (error %d)\n",
850 priv->hw->conf.beacon_int = 100;
851 priv->mac80211_registered = 1;
856 iwlcore_free_geos(priv);
857 err_free_channel_map:
858 iwl_free_channel_map(priv);
863 int iwl_setup(struct iwl_priv *priv)
866 iwlcore_init_hw(priv);
867 ret = iwlcore_init_drv(priv);
870 EXPORT_SYMBOL(iwl_setup);
872 /* Low level driver call this function to update iwlcore with
875 int iwlcore_low_level_notify(struct iwl_priv *priv,
876 enum iwlcore_card_notify notify)
880 case IWLCORE_INIT_EVT:
881 ret = iwl_rfkill_init(priv);
883 IWL_ERROR("Unable to initialize RFKILL system. "
884 "Ignoring error: %d\n", ret);
885 iwl_power_initialize(priv);
887 case IWLCORE_START_EVT:
888 iwl_power_update_mode(priv, 1);
890 case IWLCORE_STOP_EVT:
892 case IWLCORE_REMOVE_EVT:
893 iwl_rfkill_unregister(priv);
899 EXPORT_SYMBOL(iwlcore_low_level_notify);
901 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
904 struct iwl_host_cmd cmd = {
905 .id = REPLY_STATISTICS_CMD,
907 .len = sizeof(stat_flags),
908 .data = (u8 *) &stat_flags,
910 return iwl_send_cmd(priv, &cmd);
912 EXPORT_SYMBOL(iwl_send_statistics_request);
915 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
916 * using sample data 100 bytes apart. If these sample points are good,
917 * it's a pretty good bet that everything between them is good, too.
919 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
926 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
928 ret = iwl_grab_nic_access(priv);
932 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
933 /* read data comes through single port, auto-incr addr */
934 /* NOTE: Use the debugless read so we don't flood kernel log
935 * if IWL_DL_IO is set */
936 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
937 i + RTC_INST_LOWER_BOUND);
938 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
939 if (val != le32_to_cpu(*image)) {
947 iwl_release_nic_access(priv);
953 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
954 * looking at all data.
956 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
964 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
966 ret = iwl_grab_nic_access(priv);
970 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
973 for (; len > 0; len -= sizeof(u32), image++) {
974 /* read data comes through single port, auto-incr addr */
975 /* NOTE: Use the debugless read so we don't flood kernel log
976 * if IWL_DL_IO is set */
977 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
978 if (val != le32_to_cpu(*image)) {
979 IWL_ERROR("uCode INST section is invalid at "
980 "offset 0x%x, is 0x%x, s/b 0x%x\n",
981 save_len - len, val, le32_to_cpu(*image));
989 iwl_release_nic_access(priv);
993 ("ucode image in INSTRUCTION memory is good\n");
999 * iwl_verify_ucode - determine which instruction image is in SRAM,
1000 * and verify its contents
1002 int iwl_verify_ucode(struct iwl_priv *priv)
1009 image = (__le32 *)priv->ucode_boot.v_addr;
1010 len = priv->ucode_boot.len;
1011 ret = iwlcore_verify_inst_sparse(priv, image, len);
1013 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
1017 /* Try initialize */
1018 image = (__le32 *)priv->ucode_init.v_addr;
1019 len = priv->ucode_init.len;
1020 ret = iwlcore_verify_inst_sparse(priv, image, len);
1022 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
1026 /* Try runtime/protocol */
1027 image = (__le32 *)priv->ucode_code.v_addr;
1028 len = priv->ucode_code.len;
1029 ret = iwlcore_verify_inst_sparse(priv, image, len);
1031 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
1035 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1037 /* Since nothing seems to match, show first several data entries in
1038 * instruction SRAM, so maybe visual inspection will give a clue.
1039 * Selection of bootstrap image (vs. other images) is arbitrary. */
1040 image = (__le32 *)priv->ucode_boot.v_addr;
1041 len = priv->ucode_boot.len;
1042 ret = iwl_verify_inst_full(priv, image, len);
1046 EXPORT_SYMBOL(iwl_verify_ucode);