1 /******************************************************************************
5 * Copyright(c) 2008 - 2010 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 <linux/etherdevice.h>
32 #include <linux/sched.h>
33 #include <net/mac80211.h>
35 #include "iwl-eeprom.h"
36 #include "iwl-dev.h" /* FIXME: remove */
37 #include "iwl-debug.h"
40 #include "iwl-power.h"
42 #include "iwl-helpers.h"
45 MODULE_DESCRIPTION("iwl core");
46 MODULE_VERSION(IWLWIFI_VERSION);
47 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
48 MODULE_LICENSE("GPL");
51 * set bt_coex_active to true, uCode will do kill/defer
52 * every time the priority line is asserted (BT is sending signals on the
53 * priority line in the PCIx).
54 * set bt_coex_active to false, uCode will ignore the BT activity and
55 * perform the normal operation
57 * User might experience transmit issue on some platform due to WiFi/BT
58 * co-exist problem. The possible behaviors are:
59 * Able to scan and finding all the available AP
60 * Not able to associate with any AP
61 * On those platforms, WiFi communication can be restored by set
62 * "bt_coex_active" module parameter to "false"
64 * default: bt_coex_active = true (BT_COEX_ENABLE)
66 static bool bt_coex_active = true;
67 module_param(bt_coex_active, bool, S_IRUGO);
68 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist\n");
70 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
71 {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
72 0, COEX_UNASSOC_IDLE_FLAGS},
73 {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
74 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
75 {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
76 0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
77 {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
78 0, COEX_CALIBRATION_FLAGS},
79 {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
80 0, COEX_PERIODIC_CALIBRATION_FLAGS},
81 {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
82 0, COEX_CONNECTION_ESTAB_FLAGS},
83 {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
84 0, COEX_ASSOCIATED_IDLE_FLAGS},
85 {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
86 0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
87 {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
88 0, COEX_ASSOC_AUTO_SCAN_FLAGS},
89 {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
90 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
91 {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
92 {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
93 {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
94 0, COEX_STAND_ALONE_DEBUG_FLAGS},
95 {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
96 0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
97 {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
98 {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
101 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
102 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
103 IWL_RATE_SISO_##s##M_PLCP, \
104 IWL_RATE_MIMO2_##s##M_PLCP,\
105 IWL_RATE_MIMO3_##s##M_PLCP,\
106 IWL_RATE_##r##M_IEEE, \
107 IWL_RATE_##ip##M_INDEX, \
108 IWL_RATE_##in##M_INDEX, \
109 IWL_RATE_##rp##M_INDEX, \
110 IWL_RATE_##rn##M_INDEX, \
111 IWL_RATE_##pp##M_INDEX, \
112 IWL_RATE_##np##M_INDEX }
115 EXPORT_SYMBOL(iwl_debug_level);
119 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
121 * If there isn't a valid next or previous rate then INV is used which
122 * maps to IWL_RATE_INVALID
125 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
126 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
127 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
128 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
129 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
130 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
131 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
132 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
133 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
134 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
135 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
136 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
137 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
138 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
139 /* FIXME:RS: ^^ should be INV (legacy) */
141 EXPORT_SYMBOL(iwl_rates);
144 * translate ucode response to mac80211 tx status control values
146 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
147 struct ieee80211_tx_info *info)
149 struct ieee80211_tx_rate *r = &info->control.rates[0];
151 info->antenna_sel_tx =
152 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
153 if (rate_n_flags & RATE_MCS_HT_MSK)
154 r->flags |= IEEE80211_TX_RC_MCS;
155 if (rate_n_flags & RATE_MCS_GF_MSK)
156 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
157 if (rate_n_flags & RATE_MCS_HT40_MSK)
158 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
159 if (rate_n_flags & RATE_MCS_DUP_MSK)
160 r->flags |= IEEE80211_TX_RC_DUP_DATA;
161 if (rate_n_flags & RATE_MCS_SGI_MSK)
162 r->flags |= IEEE80211_TX_RC_SHORT_GI;
163 r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
165 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
167 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
172 if (rate_n_flags & RATE_MCS_HT_MSK) {
173 idx = (rate_n_flags & 0xff);
175 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
176 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
177 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
178 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
180 idx += IWL_FIRST_OFDM_RATE;
181 /* skip 9M not supported in ht*/
182 if (idx >= IWL_RATE_9M_INDEX)
184 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
187 /* legacy rate format, search for match in table */
189 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
190 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
196 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
198 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
203 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
204 if (rate_n_flags & RATE_MCS_HT_MSK) {
205 idx = (rate_n_flags & 0xff);
207 /* Legacy rate format, search for match in table */
209 if (band == IEEE80211_BAND_5GHZ)
210 band_offset = IWL_FIRST_OFDM_RATE;
211 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
212 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
213 return idx - band_offset;
219 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
223 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
224 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
225 if (priv->hw_params.valid_tx_ant & BIT(ind))
230 EXPORT_SYMBOL(iwl_toggle_tx_ant);
232 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
233 EXPORT_SYMBOL(iwl_bcast_addr);
236 /* This function both allocates and initializes hw and priv. */
237 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
238 struct ieee80211_ops *hw_ops)
240 struct iwl_priv *priv;
242 /* mac80211 allocates memory for this device instance, including
243 * space for this driver's private structure */
244 struct ieee80211_hw *hw =
245 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
247 printk(KERN_ERR "%s: Can not allocate network device\n",
258 EXPORT_SYMBOL(iwl_alloc_all);
260 void iwl_hw_detect(struct iwl_priv *priv)
262 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
263 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
264 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
266 EXPORT_SYMBOL(iwl_hw_detect);
268 int iwl_hw_nic_init(struct iwl_priv *priv)
271 struct iwl_rx_queue *rxq = &priv->rxq;
275 spin_lock_irqsave(&priv->lock, flags);
276 priv->cfg->ops->lib->apm_ops.init(priv);
278 /* Set interrupt coalescing calibration timer to default (512 usecs) */
279 iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
281 spin_unlock_irqrestore(&priv->lock, flags);
283 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
285 priv->cfg->ops->lib->apm_ops.config(priv);
287 /* Allocate the RX queue, or reset if it is already allocated */
289 ret = iwl_rx_queue_alloc(priv);
291 IWL_ERR(priv, "Unable to initialize Rx queue\n");
295 iwl_rx_queue_reset(priv, rxq);
297 iwl_rx_replenish(priv);
299 iwl_rx_init(priv, rxq);
301 spin_lock_irqsave(&priv->lock, flags);
303 rxq->need_update = 1;
304 iwl_rx_queue_update_write_ptr(priv, rxq);
306 spin_unlock_irqrestore(&priv->lock, flags);
308 /* Allocate and init all Tx and Command queues */
309 ret = iwl_txq_ctx_reset(priv);
313 set_bit(STATUS_INIT, &priv->status);
317 EXPORT_SYMBOL(iwl_hw_nic_init);
322 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
324 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
327 priv->qos_data.def_qos_parm.qos_flags = 0;
329 if (priv->qos_data.qos_cap.q_AP.queue_request &&
330 !priv->qos_data.qos_cap.q_AP.txop_request)
331 priv->qos_data.def_qos_parm.qos_flags |=
332 QOS_PARAM_FLG_TXOP_TYPE_MSK;
333 if (priv->qos_data.qos_active)
334 priv->qos_data.def_qos_parm.qos_flags |=
335 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
337 if (priv->current_ht_config.is_ht)
338 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
340 if (force || iwl_is_associated(priv)) {
341 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
342 priv->qos_data.qos_active,
343 priv->qos_data.def_qos_parm.qos_flags);
345 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
346 sizeof(struct iwl_qosparam_cmd),
347 &priv->qos_data.def_qos_parm, NULL);
350 EXPORT_SYMBOL(iwl_activate_qos);
353 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
354 * (802.11b) (802.11a/g)
355 * AC_BK 15 1023 7 0 0
356 * AC_BE 15 1023 3 0 0
357 * AC_VI 7 15 2 6.016ms 3.008ms
358 * AC_VO 3 7 2 3.264ms 1.504ms
360 void iwl_reset_qos(struct iwl_priv *priv)
365 bool is_legacy = false;
369 spin_lock_irqsave(&priv->lock, flags);
370 /* QoS always active in AP and ADHOC mode
371 * In STA mode wait for association
373 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
374 priv->iw_mode == NL80211_IFTYPE_AP)
375 priv->qos_data.qos_active = 1;
377 priv->qos_data.qos_active = 0;
379 /* check for legacy mode */
380 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
381 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
382 (priv->iw_mode == NL80211_IFTYPE_STATION &&
383 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
388 if (priv->qos_data.qos_active)
392 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
393 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
394 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
395 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
396 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
398 if (priv->qos_data.qos_active) {
401 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
402 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
403 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
404 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
405 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
409 priv->qos_data.def_qos_parm.ac[i].cw_min =
410 cpu_to_le16((cw_min + 1) / 2 - 1);
411 priv->qos_data.def_qos_parm.ac[i].cw_max =
413 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
415 priv->qos_data.def_qos_parm.ac[i].edca_txop =
418 priv->qos_data.def_qos_parm.ac[i].edca_txop =
420 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
424 priv->qos_data.def_qos_parm.ac[i].cw_min =
425 cpu_to_le16((cw_min + 1) / 4 - 1);
426 priv->qos_data.def_qos_parm.ac[i].cw_max =
427 cpu_to_le16((cw_min + 1) / 2 - 1);
428 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
429 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
431 priv->qos_data.def_qos_parm.ac[i].edca_txop =
434 priv->qos_data.def_qos_parm.ac[i].edca_txop =
437 for (i = 1; i < 4; i++) {
438 priv->qos_data.def_qos_parm.ac[i].cw_min =
440 priv->qos_data.def_qos_parm.ac[i].cw_max =
442 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
443 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
444 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
447 IWL_DEBUG_QOS(priv, "set QoS to default \n");
449 spin_unlock_irqrestore(&priv->lock, flags);
451 EXPORT_SYMBOL(iwl_reset_qos);
453 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
454 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
455 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
456 struct ieee80211_sta_ht_cap *ht_info,
457 enum ieee80211_band band)
459 u16 max_bit_rate = 0;
460 u8 rx_chains_num = priv->hw_params.rx_chains_num;
461 u8 tx_chains_num = priv->hw_params.tx_chains_num;
464 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
466 ht_info->ht_supported = true;
468 if (priv->cfg->ht_greenfield_support)
469 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
470 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
471 max_bit_rate = MAX_BIT_RATE_20_MHZ;
472 if (priv->hw_params.ht40_channel & BIT(band)) {
473 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
474 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
475 ht_info->mcs.rx_mask[4] = 0x01;
476 max_bit_rate = MAX_BIT_RATE_40_MHZ;
479 if (priv->cfg->mod_params->amsdu_size_8K)
480 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
482 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
483 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
485 ht_info->mcs.rx_mask[0] = 0xFF;
486 if (rx_chains_num >= 2)
487 ht_info->mcs.rx_mask[1] = 0xFF;
488 if (rx_chains_num >= 3)
489 ht_info->mcs.rx_mask[2] = 0xFF;
491 /* Highest supported Rx data rate */
492 max_bit_rate *= rx_chains_num;
493 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
494 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
496 /* Tx MCS capabilities */
497 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
498 if (tx_chains_num != rx_chains_num) {
499 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
500 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
501 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
506 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
508 int iwlcore_init_geos(struct iwl_priv *priv)
510 struct iwl_channel_info *ch;
511 struct ieee80211_supported_band *sband;
512 struct ieee80211_channel *channels;
513 struct ieee80211_channel *geo_ch;
514 struct ieee80211_rate *rates;
517 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
518 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
519 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
520 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
524 channels = kzalloc(sizeof(struct ieee80211_channel) *
525 priv->channel_count, GFP_KERNEL);
529 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
536 /* 5.2GHz channels start after the 2.4GHz channels */
537 sband = &priv->bands[IEEE80211_BAND_5GHZ];
538 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
540 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
541 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
543 if (priv->cfg->sku & IWL_SKU_N)
544 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
545 IEEE80211_BAND_5GHZ);
547 sband = &priv->bands[IEEE80211_BAND_2GHZ];
548 sband->channels = channels;
550 sband->bitrates = rates;
551 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
553 if (priv->cfg->sku & IWL_SKU_N)
554 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
555 IEEE80211_BAND_2GHZ);
557 priv->ieee_channels = channels;
558 priv->ieee_rates = rates;
560 for (i = 0; i < priv->channel_count; i++) {
561 ch = &priv->channel_info[i];
563 /* FIXME: might be removed if scan is OK */
564 if (!is_channel_valid(ch))
567 if (is_channel_a_band(ch))
568 sband = &priv->bands[IEEE80211_BAND_5GHZ];
570 sband = &priv->bands[IEEE80211_BAND_2GHZ];
572 geo_ch = &sband->channels[sband->n_channels++];
574 geo_ch->center_freq =
575 ieee80211_channel_to_frequency(ch->channel);
576 geo_ch->max_power = ch->max_power_avg;
577 geo_ch->max_antenna_gain = 0xff;
578 geo_ch->hw_value = ch->channel;
580 if (is_channel_valid(ch)) {
581 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
582 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
584 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
585 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
587 if (ch->flags & EEPROM_CHANNEL_RADAR)
588 geo_ch->flags |= IEEE80211_CHAN_RADAR;
590 geo_ch->flags |= ch->ht40_extension_channel;
592 if (ch->max_power_avg > priv->tx_power_device_lmt)
593 priv->tx_power_device_lmt = ch->max_power_avg;
595 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
598 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
599 ch->channel, geo_ch->center_freq,
600 is_channel_a_band(ch) ? "5.2" : "2.4",
601 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
602 "restricted" : "valid",
606 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
607 priv->cfg->sku & IWL_SKU_A) {
608 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
609 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
610 priv->pci_dev->device,
611 priv->pci_dev->subsystem_device);
612 priv->cfg->sku &= ~IWL_SKU_A;
615 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
616 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
617 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
619 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
623 EXPORT_SYMBOL(iwlcore_init_geos);
626 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
628 void iwlcore_free_geos(struct iwl_priv *priv)
630 kfree(priv->ieee_channels);
631 kfree(priv->ieee_rates);
632 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
634 EXPORT_SYMBOL(iwlcore_free_geos);
637 * iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
640 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
643 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
644 *tx_flags |= TX_CMD_FLG_RTS_MSK;
645 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
646 } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
647 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
648 *tx_flags |= TX_CMD_FLG_CTS_MSK;
651 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
653 static bool is_single_rx_stream(struct iwl_priv *priv)
655 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
656 priv->current_ht_config.single_chain_sufficient;
659 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
660 enum ieee80211_band band,
661 u16 channel, u8 extension_chan_offset)
663 const struct iwl_channel_info *ch_info;
665 ch_info = iwl_get_channel_info(priv, band, channel);
666 if (!is_channel_valid(ch_info))
669 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
670 return !(ch_info->ht40_extension_channel &
671 IEEE80211_CHAN_NO_HT40PLUS);
672 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
673 return !(ch_info->ht40_extension_channel &
674 IEEE80211_CHAN_NO_HT40MINUS);
679 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
680 struct ieee80211_sta_ht_cap *sta_ht_inf)
682 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
684 if (!ht_conf->is_ht || !ht_conf->is_40mhz)
687 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
688 * the bit will not set if it is pure 40MHz case
691 if (!sta_ht_inf->ht_supported)
694 #ifdef CONFIG_IWLWIFI_DEBUG
695 if (priv->disable_ht40)
698 return iwl_is_channel_extension(priv, priv->band,
699 le16_to_cpu(priv->staging_rxon.channel),
700 ht_conf->extension_chan_offset);
702 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
704 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
707 u16 beacon_factor = 0;
709 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
710 new_val = beacon_val / beacon_factor;
713 new_val = max_beacon_val;
718 void iwl_setup_rxon_timing(struct iwl_priv *priv)
721 s32 interval_tm, rem;
723 struct ieee80211_conf *conf = NULL;
726 conf = ieee80211_get_hw_conf(priv->hw);
728 spin_lock_irqsave(&priv->lock, flags);
729 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
730 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
732 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
733 beacon_int = priv->beacon_int;
734 priv->rxon_timing.atim_window = 0;
736 beacon_int = priv->vif->bss_conf.beacon_int;
738 /* TODO: we need to get atim_window from upper stack
739 * for now we set to 0 */
740 priv->rxon_timing.atim_window = 0;
743 beacon_int = iwl_adjust_beacon_interval(beacon_int,
744 priv->hw_params.max_beacon_itrvl * 1024);
745 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
747 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
748 interval_tm = beacon_int * 1024;
749 rem = do_div(tsf, interval_tm);
750 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
752 spin_unlock_irqrestore(&priv->lock, flags);
753 IWL_DEBUG_ASSOC(priv,
754 "beacon interval %d beacon timer %d beacon tim %d\n",
755 le16_to_cpu(priv->rxon_timing.beacon_interval),
756 le32_to_cpu(priv->rxon_timing.beacon_init_val),
757 le16_to_cpu(priv->rxon_timing.atim_window));
759 EXPORT_SYMBOL(iwl_setup_rxon_timing);
761 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
763 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
766 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
768 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
771 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
774 * iwl_check_rxon_cmd - validate RXON structure is valid
776 * NOTE: This is really only useful during development and can eventually
777 * be #ifdef'd out once the driver is stable and folks aren't actively
780 int iwl_check_rxon_cmd(struct iwl_priv *priv)
784 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
786 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
787 error |= le32_to_cpu(rxon->flags &
788 (RXON_FLG_TGJ_NARROW_BAND_MSK |
789 RXON_FLG_RADAR_DETECT_MSK));
791 IWL_WARN(priv, "check 24G fields %d | %d\n",
794 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
795 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
797 IWL_WARN(priv, "check 52 fields %d | %d\n",
799 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
801 IWL_WARN(priv, "check 52 CCK %d | %d\n",
804 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
806 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
808 /* make sure basic rates 6Mbps and 1Mbps are supported */
809 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
810 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
812 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
814 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
816 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
818 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
819 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
821 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
824 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
825 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
827 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
830 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
831 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
833 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
837 IWL_WARN(priv, "Tuning to channel %d\n",
838 le16_to_cpu(rxon->channel));
841 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
846 EXPORT_SYMBOL(iwl_check_rxon_cmd);
849 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
850 * @priv: staging_rxon is compared to active_rxon
852 * If the RXON structure is changing enough to require a new tune,
853 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
854 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
856 int iwl_full_rxon_required(struct iwl_priv *priv)
859 /* These items are only settable from the full RXON command */
860 if (!(iwl_is_associated(priv)) ||
861 compare_ether_addr(priv->staging_rxon.bssid_addr,
862 priv->active_rxon.bssid_addr) ||
863 compare_ether_addr(priv->staging_rxon.node_addr,
864 priv->active_rxon.node_addr) ||
865 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
866 priv->active_rxon.wlap_bssid_addr) ||
867 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
868 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
869 (priv->staging_rxon.air_propagation !=
870 priv->active_rxon.air_propagation) ||
871 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
872 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
873 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
874 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
875 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
876 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
877 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
880 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
881 * be updated with the RXON_ASSOC command -- however only some
882 * flag transitions are allowed using RXON_ASSOC */
884 /* Check if we are not switching bands */
885 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
886 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
889 /* Check if we are switching association toggle */
890 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
891 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
896 EXPORT_SYMBOL(iwl_full_rxon_required);
898 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
904 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
905 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
907 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
909 /* Find lowest valid rate */
910 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
911 i = iwl_rates[i].next_ieee) {
912 if (rate_mask & (1 << i))
913 return iwl_rates[i].plcp;
916 /* No valid rate was found. Assign the lowest one */
917 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
918 return IWL_RATE_1M_PLCP;
920 return IWL_RATE_6M_PLCP;
922 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
924 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
926 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
928 if (!ht_conf->is_ht) {
929 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
930 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
931 RXON_FLG_HT40_PROT_MSK |
932 RXON_FLG_HT_PROT_MSK);
936 /* FIXME: if the definition of ht_protection changed, the "translation"
937 * will be needed for rxon->flags
939 rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
941 /* Set up channel bandwidth:
942 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
943 /* clear the HT channel mode before set the mode */
944 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
945 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
946 if (iwl_is_ht40_tx_allowed(priv, NULL)) {
948 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
949 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
950 /* Note: control channel is opposite of extension channel */
951 switch (ht_conf->extension_chan_offset) {
952 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
953 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
955 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
956 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
960 /* Note: control channel is opposite of extension channel */
961 switch (ht_conf->extension_chan_offset) {
962 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
963 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
964 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
966 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
967 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
968 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
970 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
972 /* channel location only valid if in Mixed mode */
973 IWL_ERR(priv, "invalid extension channel offset\n");
978 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
981 if (priv->cfg->ops->hcmd->set_rxon_chain)
982 priv->cfg->ops->hcmd->set_rxon_chain(priv);
984 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
985 "extension channel offset 0x%x\n",
986 le32_to_cpu(rxon->flags), ht_conf->ht_protection,
987 ht_conf->extension_chan_offset);
990 EXPORT_SYMBOL(iwl_set_rxon_ht);
992 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
993 #define IWL_NUM_RX_CHAINS_SINGLE 2
994 #define IWL_NUM_IDLE_CHAINS_DUAL 2
995 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
998 * Determine how many receiver/antenna chains to use.
1000 * More provides better reception via diversity. Fewer saves power
1001 * at the expense of throughput, but only when not in powersave to
1004 * MIMO (dual stream) requires at least 2, but works better with 3.
1005 * This does not determine *which* chains to use, just how many.
1007 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
1009 /* # of Rx chains to use when expecting MIMO. */
1010 if (is_single_rx_stream(priv))
1011 return IWL_NUM_RX_CHAINS_SINGLE;
1013 return IWL_NUM_RX_CHAINS_MULTIPLE;
1017 * When we are in power saving mode, unless device support spatial
1018 * multiplexing power save, use the active count for rx chain count.
1020 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1022 /* # Rx chains when idling, depending on SMPS mode */
1023 switch (priv->current_ht_config.smps) {
1024 case IEEE80211_SMPS_STATIC:
1025 case IEEE80211_SMPS_DYNAMIC:
1026 return IWL_NUM_IDLE_CHAINS_SINGLE;
1027 case IEEE80211_SMPS_OFF:
1030 WARN(1, "invalid SMPS mode %d",
1031 priv->current_ht_config.smps);
1036 /* up to 4 chains */
1037 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1040 res = (chain_bitmap & BIT(0)) >> 0;
1041 res += (chain_bitmap & BIT(1)) >> 1;
1042 res += (chain_bitmap & BIT(2)) >> 2;
1043 res += (chain_bitmap & BIT(3)) >> 3;
1048 * iwl_is_monitor_mode - Determine if interface in monitor mode
1050 * priv->iw_mode is set in add_interface, but add_interface is
1051 * never called for monitor mode. The only way mac80211 informs us about
1052 * monitor mode is through configuring filters (call to configure_filter).
1054 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1056 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1058 EXPORT_SYMBOL(iwl_is_monitor_mode);
1061 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1063 * Selects how many and which Rx receivers/antennas/chains to use.
1064 * This should not be used for scan command ... it puts data in wrong place.
1066 void iwl_set_rxon_chain(struct iwl_priv *priv)
1068 bool is_single = is_single_rx_stream(priv);
1069 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1070 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1074 /* Tell uCode which antennas are actually connected.
1075 * Before first association, we assume all antennas are connected.
1076 * Just after first association, iwl_chain_noise_calibration()
1077 * checks which antennas actually *are* connected. */
1078 if (priv->chain_noise_data.active_chains)
1079 active_chains = priv->chain_noise_data.active_chains;
1081 active_chains = priv->hw_params.valid_rx_ant;
1083 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1085 /* How many receivers should we use? */
1086 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1087 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1090 /* correct rx chain count according hw settings
1091 * and chain noise calibration
1093 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1094 if (valid_rx_cnt < active_rx_cnt)
1095 active_rx_cnt = valid_rx_cnt;
1097 if (valid_rx_cnt < idle_rx_cnt)
1098 idle_rx_cnt = valid_rx_cnt;
1100 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1101 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1103 /* copied from 'iwl_bg_request_scan()' */
1104 /* Force use of chains B and C (0x6) for Rx for 4965
1105 * Avoid A (0x1) because of its off-channel reception on A-band.
1106 * MIMO is not used here, but value is required */
1107 if (iwl_is_monitor_mode(priv) &&
1108 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1109 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1110 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1111 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1112 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1113 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1116 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1118 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1119 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1121 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1123 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1124 priv->staging_rxon.rx_chain,
1125 active_rx_cnt, idle_rx_cnt);
1127 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1128 active_rx_cnt < idle_rx_cnt);
1130 EXPORT_SYMBOL(iwl_set_rxon_chain);
1133 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1134 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1135 * @channel: Any channel valid for the requested phymode
1137 * In addition to setting the staging RXON, priv->phymode is also set.
1139 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1140 * in the staging RXON flag structure based on the phymode
1142 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1144 enum ieee80211_band band = ch->band;
1145 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1147 if (!iwl_get_channel_info(priv, band, channel)) {
1148 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1153 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1154 (priv->band == band))
1157 priv->staging_rxon.channel = cpu_to_le16(channel);
1158 if (band == IEEE80211_BAND_5GHZ)
1159 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1161 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1165 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1169 EXPORT_SYMBOL(iwl_set_rxon_channel);
1171 void iwl_set_flags_for_band(struct iwl_priv *priv,
1172 enum ieee80211_band band)
1174 if (band == IEEE80211_BAND_5GHZ) {
1175 priv->staging_rxon.flags &=
1176 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1177 | RXON_FLG_CCK_MSK);
1178 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1180 /* Copied from iwl_post_associate() */
1181 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1182 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1184 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1186 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1187 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1189 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1190 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1191 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1196 * initialize rxon structure with default values from eeprom
1198 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1200 const struct iwl_channel_info *ch_info;
1202 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1205 case NL80211_IFTYPE_AP:
1206 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1209 case NL80211_IFTYPE_STATION:
1210 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1211 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1214 case NL80211_IFTYPE_ADHOC:
1215 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1216 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1217 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1218 RXON_FILTER_ACCEPT_GRP_MSK;
1222 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1227 /* TODO: Figure out when short_preamble would be set and cache from
1229 if (!hw_to_local(priv->hw)->short_preamble)
1230 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1232 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1235 ch_info = iwl_get_channel_info(priv, priv->band,
1236 le16_to_cpu(priv->active_rxon.channel));
1239 ch_info = &priv->channel_info[0];
1241 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1242 priv->band = ch_info->band;
1244 iwl_set_flags_for_band(priv, priv->band);
1246 priv->staging_rxon.ofdm_basic_rates =
1247 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1248 priv->staging_rxon.cck_basic_rates =
1249 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1251 /* clear both MIX and PURE40 mode flag */
1252 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1253 RXON_FLG_CHANNEL_MODE_PURE_40);
1254 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1255 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1256 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1257 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1258 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1260 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1262 static void iwl_set_rate(struct iwl_priv *priv)
1264 const struct ieee80211_supported_band *hw = NULL;
1265 struct ieee80211_rate *rate;
1268 hw = iwl_get_hw_mode(priv, priv->band);
1270 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1274 priv->active_rate = 0;
1275 priv->active_rate_basic = 0;
1277 for (i = 0; i < hw->n_bitrates; i++) {
1278 rate = &(hw->bitrates[i]);
1279 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1280 priv->active_rate |= (1 << rate->hw_value);
1283 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1284 priv->active_rate, priv->active_rate_basic);
1287 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1288 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1291 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1292 priv->staging_rxon.cck_basic_rates =
1293 ((priv->active_rate_basic &
1294 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1296 priv->staging_rxon.cck_basic_rates =
1297 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1299 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1300 priv->staging_rxon.ofdm_basic_rates =
1301 ((priv->active_rate_basic &
1302 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1303 IWL_FIRST_OFDM_RATE) & 0xFF;
1305 priv->staging_rxon.ofdm_basic_rates =
1306 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1309 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1311 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1312 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1313 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1315 if (priv->switch_rxon.switch_in_progress) {
1316 if (!le32_to_cpu(csa->status) &&
1317 (csa->channel == priv->switch_rxon.channel)) {
1318 rxon->channel = csa->channel;
1319 priv->staging_rxon.channel = csa->channel;
1320 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1321 le16_to_cpu(csa->channel));
1323 IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1324 le16_to_cpu(csa->channel));
1326 priv->switch_rxon.switch_in_progress = false;
1329 EXPORT_SYMBOL(iwl_rx_csa);
1331 #ifdef CONFIG_IWLWIFI_DEBUG
1332 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1334 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1336 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1337 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1338 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1339 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1340 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1341 le32_to_cpu(rxon->filter_flags));
1342 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1343 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1344 rxon->ofdm_basic_rates);
1345 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1346 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1347 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1348 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1350 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1353 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1355 void iwl_irq_handle_error(struct iwl_priv *priv)
1357 /* Set the FW error flag -- cleared on iwl_down */
1358 set_bit(STATUS_FW_ERROR, &priv->status);
1360 /* Cancel currently queued command. */
1361 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1363 priv->cfg->ops->lib->dump_nic_error_log(priv);
1364 if (priv->cfg->ops->lib->dump_csr)
1365 priv->cfg->ops->lib->dump_csr(priv);
1366 if (priv->cfg->ops->lib->dump_fh)
1367 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
1368 priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
1369 #ifdef CONFIG_IWLWIFI_DEBUG
1370 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1371 iwl_print_rx_config_cmd(priv);
1374 wake_up_interruptible(&priv->wait_command_queue);
1376 /* Keep the restart process from trying to send host
1377 * commands by clearing the INIT status bit */
1378 clear_bit(STATUS_READY, &priv->status);
1380 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1381 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1382 "Restarting adapter due to uCode error.\n");
1384 if (priv->cfg->mod_params->restart_fw)
1385 queue_work(priv->workqueue, &priv->restart);
1388 EXPORT_SYMBOL(iwl_irq_handle_error);
1390 int iwl_apm_stop_master(struct iwl_priv *priv)
1394 /* stop device's busmaster DMA activity */
1395 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1397 ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1398 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1400 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1402 IWL_DEBUG_INFO(priv, "stop master\n");
1406 EXPORT_SYMBOL(iwl_apm_stop_master);
1408 void iwl_apm_stop(struct iwl_priv *priv)
1410 IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1412 /* Stop device's DMA activity */
1413 iwl_apm_stop_master(priv);
1415 /* Reset the entire device */
1416 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1421 * Clear "initialization complete" bit to move adapter from
1422 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1424 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1426 EXPORT_SYMBOL(iwl_apm_stop);
1430 * Start up NIC's basic functionality after it has been reset
1431 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1432 * NOTE: This does not load uCode nor start the embedded processor
1434 int iwl_apm_init(struct iwl_priv *priv)
1439 IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1442 * Use "set_bit" below rather than "write", to preserve any hardware
1443 * bits already set by default after reset.
1446 /* Disable L0S exit timer (platform NMI Work/Around) */
1447 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1448 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1451 * Disable L0s without affecting L1;
1452 * don't wait for ICH L0s (ICH bug W/A)
1454 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1455 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1457 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1458 iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1461 * Enable HAP INTA (interrupt from management bus) to
1462 * wake device's PCI Express link L1a -> L0s
1463 * NOTE: This is no-op for 3945 (non-existant bit)
1465 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1466 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1469 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1470 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1471 * If so (likely), disable L0S, so device moves directly L0->L1;
1472 * costs negligible amount of power savings.
1473 * If not (unlikely), enable L0S, so there is at least some
1474 * power savings, even without L1.
1476 if (priv->cfg->set_l0s) {
1477 lctl = iwl_pcie_link_ctl(priv);
1478 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1479 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1480 /* L1-ASPM enabled; disable(!) L0S */
1481 iwl_set_bit(priv, CSR_GIO_REG,
1482 CSR_GIO_REG_VAL_L0S_ENABLED);
1483 IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1485 /* L1-ASPM disabled; enable(!) L0S */
1486 iwl_clear_bit(priv, CSR_GIO_REG,
1487 CSR_GIO_REG_VAL_L0S_ENABLED);
1488 IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1492 /* Configure analog phase-lock-loop before activating to D0A */
1493 if (priv->cfg->pll_cfg_val)
1494 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1497 * Set "initialization complete" bit to move adapter from
1498 * D0U* --> D0A* (powered-up active) state.
1500 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1503 * Wait for clock stabilization; once stabilized, access to
1504 * device-internal resources is supported, e.g. iwl_write_prph()
1505 * and accesses to uCode SRAM.
1507 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1508 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1509 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1511 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1516 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1517 * BSM (Boostrap State Machine) is only in 3945 and 4965;
1518 * later devices (i.e. 5000 and later) have non-volatile SRAM,
1519 * and don't need BSM to restore data after power-saving sleep.
1521 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1522 * do not disable clocks. This preserves any hardware bits already
1523 * set by default in "CLK_CTRL_REG" after reset.
1525 if (priv->cfg->use_bsm)
1526 iwl_write_prph(priv, APMG_CLK_EN_REG,
1527 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1529 iwl_write_prph(priv, APMG_CLK_EN_REG,
1530 APMG_CLK_VAL_DMA_CLK_RQT);
1533 /* Disable L1-Active */
1534 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1535 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1540 EXPORT_SYMBOL(iwl_apm_init);
1544 void iwl_configure_filter(struct ieee80211_hw *hw,
1545 unsigned int changed_flags,
1546 unsigned int *total_flags,
1549 struct iwl_priv *priv = hw->priv;
1550 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1552 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1553 changed_flags, *total_flags);
1555 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1556 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1557 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1559 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1561 if (changed_flags & FIF_ALLMULTI) {
1562 if (*total_flags & FIF_ALLMULTI)
1563 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1565 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1567 if (changed_flags & FIF_CONTROL) {
1568 if (*total_flags & FIF_CONTROL)
1569 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1571 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1573 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1574 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1575 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1577 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1580 /* We avoid iwl_commit_rxon here to commit the new filter flags
1581 * since mac80211 will call ieee80211_hw_config immediately.
1582 * (mc_list is not supported at this time). Otherwise, we need to
1583 * queue a background iwl_commit_rxon work.
1586 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1587 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1589 EXPORT_SYMBOL(iwl_configure_filter);
1591 int iwl_set_hw_params(struct iwl_priv *priv)
1593 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1594 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1595 if (priv->cfg->mod_params->amsdu_size_8K)
1596 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1598 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1600 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1602 if (priv->cfg->mod_params->disable_11n)
1603 priv->cfg->sku &= ~IWL_SKU_N;
1605 /* Device-specific setup */
1606 return priv->cfg->ops->lib->set_hw_params(priv);
1608 EXPORT_SYMBOL(iwl_set_hw_params);
1610 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1613 s8 prev_tx_power = priv->tx_power_user_lmt;
1615 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1616 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1618 IWL_TX_POWER_TARGET_POWER_MIN);
1622 if (tx_power > priv->tx_power_device_lmt) {
1624 "Requested user TXPOWER %d above upper limit %d.\n",
1625 tx_power, priv->tx_power_device_lmt);
1629 if (priv->tx_power_user_lmt != tx_power)
1632 /* if nic is not up don't send command */
1633 if (iwl_is_ready_rf(priv)) {
1634 priv->tx_power_user_lmt = tx_power;
1635 if (force && priv->cfg->ops->lib->send_tx_power)
1636 ret = priv->cfg->ops->lib->send_tx_power(priv);
1637 else if (!priv->cfg->ops->lib->send_tx_power)
1640 * if fail to set tx_power, restore the orig. tx power
1643 priv->tx_power_user_lmt = prev_tx_power;
1647 * Even this is an async host command, the command
1648 * will always report success from uCode
1649 * So once driver can placing the command into the queue
1650 * successfully, driver can use priv->tx_power_user_lmt
1651 * to reflect the current tx power
1655 EXPORT_SYMBOL(iwl_set_tx_power);
1657 irqreturn_t iwl_isr_legacy(int irq, void *data)
1659 struct iwl_priv *priv = data;
1660 u32 inta, inta_mask;
1665 spin_lock(&priv->lock);
1667 /* Disable (but don't clear!) interrupts here to avoid
1668 * back-to-back ISRs and sporadic interrupts from our NIC.
1669 * If we have something to service, the tasklet will re-enable ints.
1670 * If we *don't* have something, we'll re-enable before leaving here. */
1671 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1672 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1674 /* Discover which interrupts are active/pending */
1675 inta = iwl_read32(priv, CSR_INT);
1676 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1678 /* Ignore interrupt if there's nothing in NIC to service.
1679 * This may be due to IRQ shared with another device,
1680 * or due to sporadic interrupts thrown from our NIC. */
1681 if (!inta && !inta_fh) {
1682 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1686 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1687 /* Hardware disappeared. It might have already raised
1689 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1693 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1694 inta, inta_mask, inta_fh);
1696 inta &= ~CSR_INT_BIT_SCD;
1698 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1699 if (likely(inta || inta_fh))
1700 tasklet_schedule(&priv->irq_tasklet);
1703 spin_unlock(&priv->lock);
1707 /* re-enable interrupts here since we don't have anything to service. */
1708 /* only Re-enable if diabled by irq */
1709 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1710 iwl_enable_interrupts(priv);
1711 spin_unlock(&priv->lock);
1714 EXPORT_SYMBOL(iwl_isr_legacy);
1716 int iwl_send_bt_config(struct iwl_priv *priv)
1718 struct iwl_bt_cmd bt_cmd = {
1719 .lead_time = BT_LEAD_TIME_DEF,
1720 .max_kill = BT_MAX_KILL_DEF,
1725 if (!bt_coex_active)
1726 bt_cmd.flags = BT_COEX_DISABLE;
1728 bt_cmd.flags = BT_COEX_ENABLE;
1730 IWL_DEBUG_INFO(priv, "BT coex %s\n",
1731 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1733 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1734 sizeof(struct iwl_bt_cmd), &bt_cmd);
1736 EXPORT_SYMBOL(iwl_send_bt_config);
1738 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1740 struct iwl_statistics_cmd statistics_cmd = {
1741 .configuration_flags =
1742 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1745 if (flags & CMD_ASYNC)
1746 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1747 sizeof(struct iwl_statistics_cmd),
1748 &statistics_cmd, NULL);
1750 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1751 sizeof(struct iwl_statistics_cmd),
1754 EXPORT_SYMBOL(iwl_send_statistics_request);
1757 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1758 * using sample data 100 bytes apart. If these sample points are good,
1759 * it's a pretty good bet that everything between them is good, too.
1761 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1768 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1770 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1771 /* read data comes through single port, auto-incr addr */
1772 /* NOTE: Use the debugless read so we don't flood kernel log
1773 * if IWL_DL_IO is set */
1774 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1775 i + IWL49_RTC_INST_LOWER_BOUND);
1776 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1777 if (val != le32_to_cpu(*image)) {
1789 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1790 * looking at all data.
1792 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1800 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1802 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1803 IWL49_RTC_INST_LOWER_BOUND);
1806 for (; len > 0; len -= sizeof(u32), image++) {
1807 /* read data comes through single port, auto-incr addr */
1808 /* NOTE: Use the debugless read so we don't flood kernel log
1809 * if IWL_DL_IO is set */
1810 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1811 if (val != le32_to_cpu(*image)) {
1812 IWL_ERR(priv, "uCode INST section is invalid at "
1813 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1814 save_len - len, val, le32_to_cpu(*image));
1823 IWL_DEBUG_INFO(priv,
1824 "ucode image in INSTRUCTION memory is good\n");
1830 * iwl_verify_ucode - determine which instruction image is in SRAM,
1831 * and verify its contents
1833 int iwl_verify_ucode(struct iwl_priv *priv)
1840 image = (__le32 *)priv->ucode_boot.v_addr;
1841 len = priv->ucode_boot.len;
1842 ret = iwlcore_verify_inst_sparse(priv, image, len);
1844 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1848 /* Try initialize */
1849 image = (__le32 *)priv->ucode_init.v_addr;
1850 len = priv->ucode_init.len;
1851 ret = iwlcore_verify_inst_sparse(priv, image, len);
1853 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1857 /* Try runtime/protocol */
1858 image = (__le32 *)priv->ucode_code.v_addr;
1859 len = priv->ucode_code.len;
1860 ret = iwlcore_verify_inst_sparse(priv, image, len);
1862 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1866 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1868 /* Since nothing seems to match, show first several data entries in
1869 * instruction SRAM, so maybe visual inspection will give a clue.
1870 * Selection of bootstrap image (vs. other images) is arbitrary. */
1871 image = (__le32 *)priv->ucode_boot.v_addr;
1872 len = priv->ucode_boot.len;
1873 ret = iwl_verify_inst_full(priv, image, len);
1877 EXPORT_SYMBOL(iwl_verify_ucode);
1880 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1882 struct iwl_ct_kill_config cmd;
1883 struct iwl_ct_kill_throttling_config adv_cmd;
1884 unsigned long flags;
1887 spin_lock_irqsave(&priv->lock, flags);
1888 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1889 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1890 spin_unlock_irqrestore(&priv->lock, flags);
1891 priv->thermal_throttle.ct_kill_toggle = false;
1893 if (priv->cfg->support_ct_kill_exit) {
1894 adv_cmd.critical_temperature_enter =
1895 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1896 adv_cmd.critical_temperature_exit =
1897 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1899 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1900 sizeof(adv_cmd), &adv_cmd);
1902 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1904 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1906 "critical temperature enter is %d,"
1908 priv->hw_params.ct_kill_threshold,
1909 priv->hw_params.ct_kill_exit_threshold);
1911 cmd.critical_temperature_R =
1912 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1914 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1917 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1919 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1921 "critical temperature is %d\n",
1922 priv->hw_params.ct_kill_threshold);
1925 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1931 * Use: Sets the device's internal card state to enable, disable, or halt
1933 * When in the 'enable' state the card operates as normal.
1934 * When in the 'disable' state, the card enters into a low power mode.
1935 * When in the 'halt' state, the card is shut down and must be fully
1936 * restarted to come back on.
1938 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1940 struct iwl_host_cmd cmd = {
1941 .id = REPLY_CARD_STATE_CMD,
1947 return iwl_send_cmd(priv, &cmd);
1950 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
1951 struct iwl_rx_mem_buffer *rxb)
1953 #ifdef CONFIG_IWLWIFI_DEBUG
1954 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1955 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1956 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1957 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1960 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
1962 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1963 struct iwl_rx_mem_buffer *rxb)
1965 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1966 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1967 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1968 "notification for %s:\n", len,
1969 get_cmd_string(pkt->hdr.cmd));
1970 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
1972 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
1974 void iwl_rx_reply_error(struct iwl_priv *priv,
1975 struct iwl_rx_mem_buffer *rxb)
1977 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1979 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1980 "seq 0x%04X ser 0x%08X\n",
1981 le32_to_cpu(pkt->u.err_resp.error_type),
1982 get_cmd_string(pkt->u.err_resp.cmd_id),
1983 pkt->u.err_resp.cmd_id,
1984 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1985 le32_to_cpu(pkt->u.err_resp.error_info));
1987 EXPORT_SYMBOL(iwl_rx_reply_error);
1989 void iwl_clear_isr_stats(struct iwl_priv *priv)
1991 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1994 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1995 const struct ieee80211_tx_queue_params *params)
1997 struct iwl_priv *priv = hw->priv;
1998 unsigned long flags;
2001 IWL_DEBUG_MAC80211(priv, "enter\n");
2003 if (!iwl_is_ready_rf(priv)) {
2004 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2008 if (queue >= AC_NUM) {
2009 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2013 q = AC_NUM - 1 - queue;
2015 spin_lock_irqsave(&priv->lock, flags);
2017 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2018 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2019 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2020 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2021 cpu_to_le16((params->txop * 32));
2023 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2024 priv->qos_data.qos_active = 1;
2026 if (priv->iw_mode == NL80211_IFTYPE_AP)
2027 iwl_activate_qos(priv, 1);
2028 else if (priv->assoc_id && iwl_is_associated(priv))
2029 iwl_activate_qos(priv, 0);
2031 spin_unlock_irqrestore(&priv->lock, flags);
2033 IWL_DEBUG_MAC80211(priv, "leave\n");
2036 EXPORT_SYMBOL(iwl_mac_conf_tx);
2038 static void iwl_ht_conf(struct iwl_priv *priv,
2039 struct ieee80211_bss_conf *bss_conf)
2041 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2042 struct ieee80211_sta *sta;
2044 IWL_DEBUG_MAC80211(priv, "enter: \n");
2046 if (!ht_conf->is_ht)
2049 ht_conf->ht_protection =
2050 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2051 ht_conf->non_GF_STA_present =
2052 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2054 ht_conf->single_chain_sufficient = false;
2056 switch (priv->iw_mode) {
2057 case NL80211_IFTYPE_STATION:
2059 sta = ieee80211_find_sta(priv->vif, priv->bssid);
2061 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2064 maxstreams = (ht_cap->mcs.tx_params &
2065 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2066 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2069 if ((ht_cap->mcs.rx_mask[1] == 0) &&
2070 (ht_cap->mcs.rx_mask[2] == 0))
2071 ht_conf->single_chain_sufficient = true;
2072 if (maxstreams <= 1)
2073 ht_conf->single_chain_sufficient = true;
2076 * If at all, this can only happen through a race
2077 * when the AP disconnects us while we're still
2078 * setting up the connection, in that case mac80211
2079 * will soon tell us about that.
2081 ht_conf->single_chain_sufficient = true;
2085 case NL80211_IFTYPE_ADHOC:
2086 ht_conf->single_chain_sufficient = true;
2092 IWL_DEBUG_MAC80211(priv, "leave\n");
2095 static inline void iwl_set_no_assoc(struct iwl_priv *priv)
2098 iwl_led_disassociate(priv);
2100 * inform the ucode that there is no longer an
2101 * association and that no more packets should be
2104 priv->staging_rxon.filter_flags &=
2105 ~RXON_FILTER_ASSOC_MSK;
2106 priv->staging_rxon.assoc_id = 0;
2107 iwlcore_commit_rxon(priv);
2110 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2111 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2112 struct ieee80211_vif *vif,
2113 struct ieee80211_bss_conf *bss_conf,
2116 struct iwl_priv *priv = hw->priv;
2119 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2121 if (!iwl_is_alive(priv))
2124 mutex_lock(&priv->mutex);
2126 if (changes & BSS_CHANGED_BEACON &&
2127 priv->iw_mode == NL80211_IFTYPE_AP) {
2128 dev_kfree_skb(priv->ibss_beacon);
2129 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2132 if (changes & BSS_CHANGED_BEACON_INT) {
2133 priv->beacon_int = bss_conf->beacon_int;
2134 /* TODO: in AP mode, do something to make this take effect */
2137 if (changes & BSS_CHANGED_BSSID) {
2138 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2141 * If there is currently a HW scan going on in the
2142 * background then we need to cancel it else the RXON
2143 * below/in post_associate will fail.
2145 if (iwl_scan_cancel_timeout(priv, 100)) {
2146 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2147 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2148 mutex_unlock(&priv->mutex);
2152 /* mac80211 only sets assoc when in STATION mode */
2153 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2155 memcpy(priv->staging_rxon.bssid_addr,
2156 bss_conf->bssid, ETH_ALEN);
2158 /* currently needed in a few places */
2159 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2161 priv->staging_rxon.filter_flags &=
2162 ~RXON_FILTER_ASSOC_MSK;
2168 * This needs to be after setting the BSSID in case
2169 * mac80211 decides to do both changes at once because
2170 * it will invoke post_associate.
2172 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2173 changes & BSS_CHANGED_BEACON) {
2174 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2177 iwl_mac_beacon_update(hw, beacon);
2180 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2181 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2182 bss_conf->use_short_preamble);
2183 if (bss_conf->use_short_preamble)
2184 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2186 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2189 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2190 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2191 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2192 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2194 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2197 if (changes & BSS_CHANGED_BASIC_RATES) {
2198 /* XXX use this information
2200 * To do that, remove code from iwl_set_rate() and put something
2204 priv->staging_rxon.ofdm_basic_rates =
2205 bss_conf->basic_rates;
2207 priv->staging_rxon.ofdm_basic_rates =
2208 bss_conf->basic_rates >> 4;
2209 priv->staging_rxon.cck_basic_rates =
2210 bss_conf->basic_rates & 0xF;
2214 if (changes & BSS_CHANGED_HT) {
2215 iwl_ht_conf(priv, bss_conf);
2217 if (priv->cfg->ops->hcmd->set_rxon_chain)
2218 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2221 if (changes & BSS_CHANGED_ASSOC) {
2222 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2223 if (bss_conf->assoc) {
2224 priv->assoc_id = bss_conf->aid;
2225 priv->beacon_int = bss_conf->beacon_int;
2226 priv->timestamp = bss_conf->timestamp;
2227 priv->assoc_capability = bss_conf->assoc_capability;
2229 iwl_led_associate(priv);
2232 * We have just associated, don't start scan too early
2233 * leave time for EAPOL exchange to complete.
2235 * XXX: do this in mac80211
2237 priv->next_scan_jiffies = jiffies +
2238 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2239 if (!iwl_is_rfkill(priv))
2240 priv->cfg->ops->lib->post_associate(priv);
2242 iwl_set_no_assoc(priv);
2245 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2246 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2248 ret = iwl_send_rxon_assoc(priv);
2250 /* Sync active_rxon with latest change. */
2251 memcpy((void *)&priv->active_rxon,
2252 &priv->staging_rxon,
2253 sizeof(struct iwl_rxon_cmd));
2257 if (changes & BSS_CHANGED_BEACON_ENABLED) {
2258 if (vif->bss_conf.enable_beacon) {
2259 memcpy(priv->staging_rxon.bssid_addr,
2260 bss_conf->bssid, ETH_ALEN);
2261 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2262 iwlcore_config_ap(priv);
2264 iwl_set_no_assoc(priv);
2267 mutex_unlock(&priv->mutex);
2269 IWL_DEBUG_MAC80211(priv, "leave\n");
2271 EXPORT_SYMBOL(iwl_bss_info_changed);
2273 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2275 struct iwl_priv *priv = hw->priv;
2276 unsigned long flags;
2279 IWL_DEBUG_MAC80211(priv, "enter\n");
2281 if (!iwl_is_ready_rf(priv)) {
2282 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2286 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2287 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2291 spin_lock_irqsave(&priv->lock, flags);
2293 if (priv->ibss_beacon)
2294 dev_kfree_skb(priv->ibss_beacon);
2296 priv->ibss_beacon = skb;
2299 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2300 priv->timestamp = le64_to_cpu(timestamp);
2302 IWL_DEBUG_MAC80211(priv, "leave\n");
2303 spin_unlock_irqrestore(&priv->lock, flags);
2305 iwl_reset_qos(priv);
2307 priv->cfg->ops->lib->post_associate(priv);
2312 EXPORT_SYMBOL(iwl_mac_beacon_update);
2314 int iwl_set_mode(struct iwl_priv *priv, int mode)
2316 if (mode == NL80211_IFTYPE_ADHOC) {
2317 const struct iwl_channel_info *ch_info;
2319 ch_info = iwl_get_channel_info(priv,
2321 le16_to_cpu(priv->staging_rxon.channel));
2323 if (!ch_info || !is_channel_ibss(ch_info)) {
2324 IWL_ERR(priv, "channel %d not IBSS channel\n",
2325 le16_to_cpu(priv->staging_rxon.channel));
2330 iwl_connection_init_rx_config(priv, mode);
2332 if (priv->cfg->ops->hcmd->set_rxon_chain)
2333 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2335 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2337 iwl_clear_stations_table(priv);
2339 /* dont commit rxon if rf-kill is on*/
2340 if (!iwl_is_ready_rf(priv))
2343 iwlcore_commit_rxon(priv);
2347 EXPORT_SYMBOL(iwl_set_mode);
2349 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2350 struct ieee80211_vif *vif)
2352 struct iwl_priv *priv = hw->priv;
2355 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", vif->type);
2357 mutex_lock(&priv->mutex);
2360 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2366 priv->iw_mode = vif->type;
2369 IWL_DEBUG_MAC80211(priv, "Set %pM\n", vif->addr);
2370 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
2373 if (iwl_set_mode(priv, vif->type) == -EAGAIN)
2374 /* we are not ready, will run again when ready */
2375 set_bit(STATUS_MODE_PENDING, &priv->status);
2378 mutex_unlock(&priv->mutex);
2380 IWL_DEBUG_MAC80211(priv, "leave\n");
2383 EXPORT_SYMBOL(iwl_mac_add_interface);
2385 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2386 struct ieee80211_vif *vif)
2388 struct iwl_priv *priv = hw->priv;
2390 IWL_DEBUG_MAC80211(priv, "enter\n");
2392 mutex_lock(&priv->mutex);
2394 if (iwl_is_ready_rf(priv)) {
2395 iwl_scan_cancel_timeout(priv, 100);
2396 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2397 iwlcore_commit_rxon(priv);
2399 if (priv->vif == vif) {
2401 memset(priv->bssid, 0, ETH_ALEN);
2403 mutex_unlock(&priv->mutex);
2405 IWL_DEBUG_MAC80211(priv, "leave\n");
2408 EXPORT_SYMBOL(iwl_mac_remove_interface);
2411 * iwl_mac_config - mac80211 config callback
2413 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2414 * be set inappropriately and the driver currently sets the hardware up to
2415 * use it whenever needed.
2417 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2419 struct iwl_priv *priv = hw->priv;
2420 const struct iwl_channel_info *ch_info;
2421 struct ieee80211_conf *conf = &hw->conf;
2422 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2423 unsigned long flags = 0;
2426 int scan_active = 0;
2428 mutex_lock(&priv->mutex);
2430 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2431 conf->channel->hw_value, changed);
2433 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2434 test_bit(STATUS_SCANNING, &priv->status))) {
2436 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2439 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2440 IEEE80211_CONF_CHANGE_CHANNEL)) {
2441 /* mac80211 uses static for non-HT which is what we want */
2442 priv->current_ht_config.smps = conf->smps_mode;
2445 * Recalculate chain counts.
2447 * If monitor mode is enabled then mac80211 will
2448 * set up the SM PS mode to OFF if an HT channel is
2451 if (priv->cfg->ops->hcmd->set_rxon_chain)
2452 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2455 /* during scanning mac80211 will delay channel setting until
2456 * scan finish with changed = 0
2458 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2462 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2463 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2464 if (!is_channel_valid(ch_info)) {
2465 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2470 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2471 !is_channel_ibss(ch_info)) {
2472 IWL_ERR(priv, "channel %d in band %d not "
2474 conf->channel->hw_value, conf->channel->band);
2479 spin_lock_irqsave(&priv->lock, flags);
2481 /* Configure HT40 channels */
2482 ht_conf->is_ht = conf_is_ht(conf);
2483 if (ht_conf->is_ht) {
2484 if (conf_is_ht40_minus(conf)) {
2485 ht_conf->extension_chan_offset =
2486 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2487 ht_conf->is_40mhz = true;
2488 } else if (conf_is_ht40_plus(conf)) {
2489 ht_conf->extension_chan_offset =
2490 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2491 ht_conf->is_40mhz = true;
2493 ht_conf->extension_chan_offset =
2494 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2495 ht_conf->is_40mhz = false;
2498 ht_conf->is_40mhz = false;
2499 /* Default to no protection. Protection mode will later be set
2500 * from BSS config in iwl_ht_conf */
2501 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2503 /* if we are switching from ht to 2.4 clear flags
2504 * from any ht related info since 2.4 does not
2506 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2507 priv->staging_rxon.flags = 0;
2509 iwl_set_rxon_channel(priv, conf->channel);
2510 iwl_set_rxon_ht(priv, ht_conf);
2512 iwl_set_flags_for_band(priv, conf->channel->band);
2513 spin_unlock_irqrestore(&priv->lock, flags);
2514 if (iwl_is_associated(priv) &&
2515 (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2516 priv->cfg->ops->lib->set_channel_switch) {
2519 * at this point, staging_rxon has the
2520 * configuration for channel switch
2522 ret = priv->cfg->ops->lib->set_channel_switch(priv,
2525 iwl_print_rx_config_cmd(priv);
2528 priv->switch_rxon.switch_in_progress = false;
2531 /* The list of supported rates and rate mask can be different
2532 * for each band; since the band may have changed, reset
2533 * the rate mask to what mac80211 lists */
2537 if (changed & (IEEE80211_CONF_CHANGE_PS |
2538 IEEE80211_CONF_CHANGE_IDLE)) {
2539 ret = iwl_power_update_mode(priv, false);
2541 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2544 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2545 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2546 priv->tx_power_user_lmt, conf->power_level);
2548 iwl_set_tx_power(priv, conf->power_level, false);
2551 if (!iwl_is_ready(priv)) {
2552 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2559 if (memcmp(&priv->active_rxon,
2560 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2561 iwlcore_commit_rxon(priv);
2563 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2567 IWL_DEBUG_MAC80211(priv, "leave\n");
2568 mutex_unlock(&priv->mutex);
2571 EXPORT_SYMBOL(iwl_mac_config);
2573 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2575 struct iwl_priv *priv = hw->priv;
2576 unsigned long flags;
2578 mutex_lock(&priv->mutex);
2579 IWL_DEBUG_MAC80211(priv, "enter\n");
2581 spin_lock_irqsave(&priv->lock, flags);
2582 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2583 spin_unlock_irqrestore(&priv->lock, flags);
2585 iwl_reset_qos(priv);
2587 spin_lock_irqsave(&priv->lock, flags);
2589 priv->assoc_capability = 0;
2590 priv->assoc_station_added = 0;
2592 /* new association get rid of ibss beacon skb */
2593 if (priv->ibss_beacon)
2594 dev_kfree_skb(priv->ibss_beacon);
2596 priv->ibss_beacon = NULL;
2598 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2599 priv->timestamp = 0;
2600 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2601 priv->beacon_int = 0;
2603 spin_unlock_irqrestore(&priv->lock, flags);
2605 if (!iwl_is_ready_rf(priv)) {
2606 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2607 mutex_unlock(&priv->mutex);
2611 /* we are restarting association process
2612 * clear RXON_FILTER_ASSOC_MSK bit
2614 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2615 iwl_scan_cancel_timeout(priv, 100);
2616 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2617 iwlcore_commit_rxon(priv);
2620 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2621 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2622 mutex_unlock(&priv->mutex);
2628 mutex_unlock(&priv->mutex);
2630 IWL_DEBUG_MAC80211(priv, "leave\n");
2632 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2634 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2637 priv->txq = kzalloc(
2638 sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2641 IWL_ERR(priv, "Not enough memory for txq \n");
2646 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2648 void iwl_free_txq_mem(struct iwl_priv *priv)
2653 EXPORT_SYMBOL(iwl_free_txq_mem);
2655 int iwl_send_wimax_coex(struct iwl_priv *priv)
2657 struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);
2659 if (priv->cfg->support_wimax_coexist) {
2660 /* UnMask wake up src at associated sleep */
2661 coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
2663 /* UnMask wake up src at unassociated sleep */
2664 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
2665 memcpy(coex_cmd.sta_prio, cu_priorities,
2666 sizeof(struct iwl_wimax_coex_event_entry) *
2667 COEX_NUM_OF_EVENTS);
2669 /* enabling the coexistence feature */
2670 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
2672 /* enabling the priorities tables */
2673 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
2675 /* coexistence is disabled */
2676 memset(&coex_cmd, 0, sizeof(coex_cmd));
2678 return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
2679 sizeof(coex_cmd), &coex_cmd);
2681 EXPORT_SYMBOL(iwl_send_wimax_coex);
2683 #ifdef CONFIG_IWLWIFI_DEBUGFS
2685 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2687 void iwl_reset_traffic_log(struct iwl_priv *priv)
2689 priv->tx_traffic_idx = 0;
2690 priv->rx_traffic_idx = 0;
2691 if (priv->tx_traffic)
2692 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2693 if (priv->rx_traffic)
2694 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2697 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2699 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2701 if (iwl_debug_level & IWL_DL_TX) {
2702 if (!priv->tx_traffic) {
2704 kzalloc(traffic_size, GFP_KERNEL);
2705 if (!priv->tx_traffic)
2709 if (iwl_debug_level & IWL_DL_RX) {
2710 if (!priv->rx_traffic) {
2712 kzalloc(traffic_size, GFP_KERNEL);
2713 if (!priv->rx_traffic)
2717 iwl_reset_traffic_log(priv);
2720 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2722 void iwl_free_traffic_mem(struct iwl_priv *priv)
2724 kfree(priv->tx_traffic);
2725 priv->tx_traffic = NULL;
2727 kfree(priv->rx_traffic);
2728 priv->rx_traffic = NULL;
2730 EXPORT_SYMBOL(iwl_free_traffic_mem);
2732 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2733 u16 length, struct ieee80211_hdr *header)
2738 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2741 if (!priv->tx_traffic)
2744 fc = header->frame_control;
2745 if (ieee80211_is_data(fc)) {
2746 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2747 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2748 memcpy((priv->tx_traffic +
2749 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2751 priv->tx_traffic_idx =
2752 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2755 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2757 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2758 u16 length, struct ieee80211_hdr *header)
2763 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2766 if (!priv->rx_traffic)
2769 fc = header->frame_control;
2770 if (ieee80211_is_data(fc)) {
2771 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2772 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2773 memcpy((priv->rx_traffic +
2774 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2776 priv->rx_traffic_idx =
2777 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2780 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2782 const char *get_mgmt_string(int cmd)
2785 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2786 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2787 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2788 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2789 IWL_CMD(MANAGEMENT_PROBE_REQ);
2790 IWL_CMD(MANAGEMENT_PROBE_RESP);
2791 IWL_CMD(MANAGEMENT_BEACON);
2792 IWL_CMD(MANAGEMENT_ATIM);
2793 IWL_CMD(MANAGEMENT_DISASSOC);
2794 IWL_CMD(MANAGEMENT_AUTH);
2795 IWL_CMD(MANAGEMENT_DEAUTH);
2796 IWL_CMD(MANAGEMENT_ACTION);
2803 const char *get_ctrl_string(int cmd)
2806 IWL_CMD(CONTROL_BACK_REQ);
2807 IWL_CMD(CONTROL_BACK);
2808 IWL_CMD(CONTROL_PSPOLL);
2809 IWL_CMD(CONTROL_RTS);
2810 IWL_CMD(CONTROL_CTS);
2811 IWL_CMD(CONTROL_ACK);
2812 IWL_CMD(CONTROL_CFEND);
2813 IWL_CMD(CONTROL_CFENDACK);
2820 void iwl_clear_traffic_stats(struct iwl_priv *priv)
2822 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2823 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2828 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2829 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2830 * Use debugFs to display the rx/rx_statistics
2831 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2832 * information will be recorded, but DATA pkt still will be recorded
2833 * for the reason of iwl_led.c need to control the led blinking based on
2834 * number of tx and rx data.
2837 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2839 struct traffic_stats *stats;
2842 stats = &priv->tx_stats;
2844 stats = &priv->rx_stats;
2846 if (ieee80211_is_mgmt(fc)) {
2847 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2848 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2849 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2851 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2852 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2854 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2855 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2857 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2858 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2860 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2861 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2863 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2864 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2866 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2867 stats->mgmt[MANAGEMENT_BEACON]++;
2869 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2870 stats->mgmt[MANAGEMENT_ATIM]++;
2872 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2873 stats->mgmt[MANAGEMENT_DISASSOC]++;
2875 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2876 stats->mgmt[MANAGEMENT_AUTH]++;
2878 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2879 stats->mgmt[MANAGEMENT_DEAUTH]++;
2881 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2882 stats->mgmt[MANAGEMENT_ACTION]++;
2885 } else if (ieee80211_is_ctl(fc)) {
2886 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2887 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2888 stats->ctrl[CONTROL_BACK_REQ]++;
2890 case cpu_to_le16(IEEE80211_STYPE_BACK):
2891 stats->ctrl[CONTROL_BACK]++;
2893 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
2894 stats->ctrl[CONTROL_PSPOLL]++;
2896 case cpu_to_le16(IEEE80211_STYPE_RTS):
2897 stats->ctrl[CONTROL_RTS]++;
2899 case cpu_to_le16(IEEE80211_STYPE_CTS):
2900 stats->ctrl[CONTROL_CTS]++;
2902 case cpu_to_le16(IEEE80211_STYPE_ACK):
2903 stats->ctrl[CONTROL_ACK]++;
2905 case cpu_to_le16(IEEE80211_STYPE_CFEND):
2906 stats->ctrl[CONTROL_CFEND]++;
2908 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
2909 stats->ctrl[CONTROL_CFENDACK]++;
2915 stats->data_bytes += len;
2917 iwl_leds_background(priv);
2919 EXPORT_SYMBOL(iwl_update_stats);
2922 const static char *get_csr_string(int cmd)
2925 IWL_CMD(CSR_HW_IF_CONFIG_REG);
2926 IWL_CMD(CSR_INT_COALESCING);
2928 IWL_CMD(CSR_INT_MASK);
2929 IWL_CMD(CSR_FH_INT_STATUS);
2930 IWL_CMD(CSR_GPIO_IN);
2932 IWL_CMD(CSR_GP_CNTRL);
2933 IWL_CMD(CSR_HW_REV);
2934 IWL_CMD(CSR_EEPROM_REG);
2935 IWL_CMD(CSR_EEPROM_GP);
2936 IWL_CMD(CSR_OTP_GP_REG);
2937 IWL_CMD(CSR_GIO_REG);
2938 IWL_CMD(CSR_GP_UCODE_REG);
2939 IWL_CMD(CSR_GP_DRIVER_REG);
2940 IWL_CMD(CSR_UCODE_DRV_GP1);
2941 IWL_CMD(CSR_UCODE_DRV_GP2);
2942 IWL_CMD(CSR_LED_REG);
2943 IWL_CMD(CSR_DRAM_INT_TBL_REG);
2944 IWL_CMD(CSR_GIO_CHICKEN_BITS);
2945 IWL_CMD(CSR_ANA_PLL_CFG);
2946 IWL_CMD(CSR_HW_REV_WA_REG);
2947 IWL_CMD(CSR_DBG_HPET_MEM_REG);
2954 void iwl_dump_csr(struct iwl_priv *priv)
2958 CSR_HW_IF_CONFIG_REG,
2976 CSR_DRAM_INT_TBL_REG,
2977 CSR_GIO_CHICKEN_BITS,
2980 CSR_DBG_HPET_MEM_REG
2982 IWL_ERR(priv, "CSR values:\n");
2983 IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
2984 "CSR_INT_PERIODIC_REG)\n");
2985 for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
2986 IWL_ERR(priv, " %25s: 0X%08x\n",
2987 get_csr_string(csr_tbl[i]),
2988 iwl_read32(priv, csr_tbl[i]));
2991 EXPORT_SYMBOL(iwl_dump_csr);
2993 const static char *get_fh_string(int cmd)
2996 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
2997 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
2998 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
2999 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
3000 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
3001 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
3002 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
3003 IWL_CMD(FH_TSSR_TX_STATUS_REG);
3004 IWL_CMD(FH_TSSR_TX_ERROR_REG);
3011 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
3014 #ifdef CONFIG_IWLWIFI_DEBUG
3019 FH_RSCSR_CHNL0_STTS_WPTR_REG,
3020 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
3021 FH_RSCSR_CHNL0_WPTR,
3022 FH_MEM_RCSR_CHNL0_CONFIG_REG,
3023 FH_MEM_RSSR_SHARED_CTRL_REG,
3024 FH_MEM_RSSR_RX_STATUS_REG,
3025 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
3026 FH_TSSR_TX_STATUS_REG,
3027 FH_TSSR_TX_ERROR_REG
3029 #ifdef CONFIG_IWLWIFI_DEBUG
3031 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
3032 *buf = kmalloc(bufsz, GFP_KERNEL);
3035 pos += scnprintf(*buf + pos, bufsz - pos,
3036 "FH register values:\n");
3037 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
3038 pos += scnprintf(*buf + pos, bufsz - pos,
3040 get_fh_string(fh_tbl[i]),
3041 iwl_read_direct32(priv, fh_tbl[i]));
3046 IWL_ERR(priv, "FH register values:\n");
3047 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
3048 IWL_ERR(priv, " %34s: 0X%08x\n",
3049 get_fh_string(fh_tbl[i]),
3050 iwl_read_direct32(priv, fh_tbl[i]));
3054 EXPORT_SYMBOL(iwl_dump_fh);
3056 static void iwl_force_rf_reset(struct iwl_priv *priv)
3058 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3061 if (!iwl_is_associated(priv)) {
3062 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
3066 * There is no easy and better way to force reset the radio,
3067 * the only known method is switching channel which will force to
3068 * reset and tune the radio.
3069 * Use internal short scan (single channel) operation to should
3070 * achieve this objective.
3071 * Driver should reset the radio when number of consecutive missed
3072 * beacon, or any other uCode error condition detected.
3074 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
3075 iwl_internal_short_hw_scan(priv);
3080 int iwl_force_reset(struct iwl_priv *priv, int mode)
3082 struct iwl_force_reset *force_reset;
3084 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3087 if (mode >= IWL_MAX_FORCE_RESET) {
3088 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
3091 force_reset = &priv->force_reset[mode];
3092 force_reset->reset_request_count++;
3093 if (force_reset->last_force_reset_jiffies &&
3094 time_after(force_reset->last_force_reset_jiffies +
3095 force_reset->reset_duration, jiffies)) {
3096 IWL_DEBUG_INFO(priv, "force reset rejected\n");
3097 force_reset->reset_reject_count++;
3100 force_reset->reset_success_count++;
3101 force_reset->last_force_reset_jiffies = jiffies;
3102 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
3105 iwl_force_rf_reset(priv);
3108 IWL_ERR(priv, "On demand firmware reload\n");
3109 /* Set the FW error flag -- cleared on iwl_down */
3110 set_bit(STATUS_FW_ERROR, &priv->status);
3111 wake_up_interruptible(&priv->wait_command_queue);
3113 * Keep the restart process from trying to send host
3114 * commands by clearing the INIT status bit
3116 clear_bit(STATUS_READY, &priv->status);
3117 queue_work(priv->workqueue, &priv->restart);
3125 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3127 struct iwl_priv *priv = pci_get_drvdata(pdev);
3130 * This function is called when system goes into suspend state
3131 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3132 * first but since iwl_mac_stop() has no knowledge of who the caller is,
3133 * it will not call apm_ops.stop() to stop the DMA operation.
3134 * Calling apm_ops.stop here to make sure we stop the DMA.
3136 priv->cfg->ops->lib->apm_ops.stop(priv);
3138 pci_save_state(pdev);
3139 pci_disable_device(pdev);
3140 pci_set_power_state(pdev, PCI_D3hot);
3144 EXPORT_SYMBOL(iwl_pci_suspend);
3146 int iwl_pci_resume(struct pci_dev *pdev)
3148 struct iwl_priv *priv = pci_get_drvdata(pdev);
3151 pci_set_power_state(pdev, PCI_D0);
3152 ret = pci_enable_device(pdev);
3155 pci_restore_state(pdev);
3156 iwl_enable_interrupts(priv);
3160 EXPORT_SYMBOL(iwl_pci_resume);
3162 #endif /* CONFIG_PM */