iwl-core.c 57.3 KB
Newer Older
T
Tomas Winkler 已提交
1 2 3 4
/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
5
 * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
T
Tomas Winkler 已提交
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
25
 *  Intel Linux Wireless <ilw@linux.intel.com>
T
Tomas Winkler 已提交
26 27 28 29 30
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
31
#include <linux/etherdevice.h>
32
#include <net/mac80211.h>
T
Tomas Winkler 已提交
33

A
Assaf Krauss 已提交
34
#include "iwl-eeprom.h"
35
#include "iwl-dev.h" /* FIXME: remove */
W
Winkler, Tomas 已提交
36
#include "iwl-debug.h"
T
Tomas Winkler 已提交
37
#include "iwl-core.h"
38
#include "iwl-io.h"
39
#include "iwl-rfkill.h"
M
Mohamed Abbas 已提交
40
#include "iwl-power.h"
41
#include "iwl-sta.h"
T
Tomas Winkler 已提交
42

43

T
Tomas Winkler 已提交
44 45
MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
46
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
T
Tomas Winkler 已提交
47
MODULE_LICENSE("GPL");
T
Tomas Winkler 已提交
48

R
Ron Rindjunsky 已提交
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
	[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
				    IWL_RATE_SISO_##s##M_PLCP, \
				    IWL_RATE_MIMO2_##s##M_PLCP,\
				    IWL_RATE_MIMO3_##s##M_PLCP,\
				    IWL_RATE_##r##M_IEEE,      \
				    IWL_RATE_##ip##M_INDEX,    \
				    IWL_RATE_##in##M_INDEX,    \
				    IWL_RATE_##rp##M_INDEX,    \
				    IWL_RATE_##rn##M_INDEX,    \
				    IWL_RATE_##pp##M_INDEX,    \
				    IWL_RATE_##np##M_INDEX }

/*
 * Parameter order:
 *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
 *
 * If there isn't a valid next or previous rate then INV is used which
 * maps to IWL_RATE_INVALID
 *
 */
70
const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
R
Ron Rindjunsky 已提交
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
	IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
	IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
	IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
	IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
	IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
	IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
	IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
	IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
	IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
	IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
	IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
	IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
	IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
	/* FIXME:RS:          ^^    should be INV (legacy) */
};
86
EXPORT_SYMBOL(iwl_rates);
R
Ron Rindjunsky 已提交
87

88 89 90 91
/**
 * translate ucode response to mac80211 tx status control values
 */
void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
92
				  struct ieee80211_tx_info *info)
93 94
{
	int rate_index;
95
	struct ieee80211_tx_rate *r = &info->control.rates[0];
96

97
	info->antenna_sel_tx =
98 99
		((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
	if (rate_n_flags & RATE_MCS_HT_MSK)
100
		r->flags |= IEEE80211_TX_RC_MCS;
101
	if (rate_n_flags & RATE_MCS_GF_MSK)
102
		r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
103
	if (rate_n_flags & RATE_MCS_FAT_MSK)
104
		r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
105
	if (rate_n_flags & RATE_MCS_DUP_MSK)
106
		r->flags |= IEEE80211_TX_RC_DUP_DATA;
107
	if (rate_n_flags & RATE_MCS_SGI_MSK)
108
		r->flags |= IEEE80211_TX_RC_SHORT_GI;
109
	rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
110
	if (info->band == IEEE80211_BAND_5GHZ)
111
		rate_index -= IWL_FIRST_OFDM_RATE;
112
	r->idx = rate_index;
113 114 115 116 117 118 119 120 121 122 123
}
EXPORT_SYMBOL(iwl_hwrate_to_tx_control);

int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
{
	int idx = 0;

	/* HT rate format */
	if (rate_n_flags & RATE_MCS_HT_MSK) {
		idx = (rate_n_flags & 0xff);

124 125 126
		if (idx >= IWL_RATE_MIMO3_6M_PLCP)
			idx = idx - IWL_RATE_MIMO3_6M_PLCP;
		else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
			idx = idx - IWL_RATE_MIMO2_6M_PLCP;

		idx += IWL_FIRST_OFDM_RATE;
		/* skip 9M not supported in ht*/
		if (idx >= IWL_RATE_9M_INDEX)
			idx += 1;
		if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
			return idx;

	/* legacy rate format, search for match in table */
	} else {
		for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
			if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
				return idx;
	}

	return -1;
}
EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);

T
Tomas Winkler 已提交
147 148 149 150 151 152 153 154 155 156 157
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
{
	int i;
	u8 ind = ant;
	for (i = 0; i < RATE_ANT_NUM - 1; i++) {
		ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
		if (priv->hw_params.valid_tx_ant & BIT(ind))
			return ind;
	}
	return ant;
}
158 159 160 161 162

const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
EXPORT_SYMBOL(iwl_bcast_addr);


163 164 165 166 167 168 169 170 171 172 173
/* This function both allocates and initializes hw and priv. */
struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
		struct ieee80211_ops *hw_ops)
{
	struct iwl_priv *priv;

	/* mac80211 allocates memory for this device instance, including
	 *   space for this driver's private structure */
	struct ieee80211_hw *hw =
		ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
	if (hw == NULL) {
174 175
		printk(KERN_ERR "%s: Can not allocate network device\n",
		       cfg->name);
176 177 178 179 180 181 182 183 184 185 186
		goto out;
	}

	priv = hw->priv;
	priv->hw = hw;

out:
	return hw;
}
EXPORT_SYMBOL(iwl_alloc_all);

187 188 189 190 191 192 193 194
void iwl_hw_detect(struct iwl_priv *priv)
{
	priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
	priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
	pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
}
EXPORT_SYMBOL(iwl_hw_detect);

195 196 197 198 199 200 201 202
int iwl_hw_nic_init(struct iwl_priv *priv)
{
	unsigned long flags;
	struct iwl_rx_queue *rxq = &priv->rxq;
	int ret;

	/* nic_init */
	spin_lock_irqsave(&priv->lock, flags);
203
	priv->cfg->ops->lib->apm_ops.init(priv);
204 205 206 207 208 209 210 211 212 213 214
	iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
	spin_unlock_irqrestore(&priv->lock, flags);

	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);

	priv->cfg->ops->lib->apm_ops.config(priv);

	/* Allocate the RX queue, or reset if it is already allocated */
	if (!rxq->bd) {
		ret = iwl_rx_queue_alloc(priv);
		if (ret) {
215
			IWL_ERR(priv, "Unable to initialize Rx queue\n");
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242
			return -ENOMEM;
		}
	} else
		iwl_rx_queue_reset(priv, rxq);

	iwl_rx_replenish(priv);

	iwl_rx_init(priv, rxq);

	spin_lock_irqsave(&priv->lock, flags);

	rxq->need_update = 1;
	iwl_rx_queue_update_write_ptr(priv, rxq);

	spin_unlock_irqrestore(&priv->lock, flags);

	/* Allocate and init all Tx and Command queues */
	ret = iwl_txq_ctx_reset(priv);
	if (ret)
		return ret;

	set_bit(STATUS_INIT, &priv->status);

	return 0;
}
EXPORT_SYMBOL(iwl_hw_nic_init);

R
Ron Rindjunsky 已提交
243
void iwl_reset_qos(struct iwl_priv *priv)
244 245 246 247
{
	u16 cw_min = 15;
	u16 cw_max = 1023;
	u8 aifs = 2;
248
	bool is_legacy = false;
249 250 251 252
	unsigned long flags;
	int i;

	spin_lock_irqsave(&priv->lock, flags);
253 254 255 256 257 258 259 260
	/* QoS always active in AP and ADHOC mode
	 * In STA mode wait for association
	 */
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
	    priv->iw_mode == NL80211_IFTYPE_AP)
		priv->qos_data.qos_active = 1;
	else
		priv->qos_data.qos_active = 0;
261

262 263 264 265 266
	/* check for legacy mode */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
	    (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
	    (priv->iw_mode == NL80211_IFTYPE_STATION &&
	    (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
		cw_min = 31;
		is_legacy = 1;
	}

	if (priv->qos_data.qos_active)
		aifs = 3;

	priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
	priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
	priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
	priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
	priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;

	if (priv->qos_data.qos_active) {
		i = 1;
		priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
		priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
		priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

		i = 2;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16(cw_max);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(6016);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3008);
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

		i = 3;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 4 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16((cw_max + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3264);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(1504);
	} else {
		for (i = 1; i < 4; i++) {
			priv->qos_data.def_qos_parm.ac[i].cw_min =
				cpu_to_le16(cw_min);
			priv->qos_data.def_qos_parm.ac[i].cw_max =
				cpu_to_le16(cw_max);
			priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
			priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
			priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		}
	}
326
	IWL_DEBUG_QOS(priv, "set QoS to default \n");
327 328 329

	spin_unlock_irqrestore(&priv->lock, flags);
}
R
Ron Rindjunsky 已提交
330 331
EXPORT_SYMBOL(iwl_reset_qos);

J
Johannes Berg 已提交
332 333
#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
R
Ron Rindjunsky 已提交
334
static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
J
Johannes Berg 已提交
335
			      struct ieee80211_sta_ht_cap *ht_info,
R
Ron Rindjunsky 已提交
336 337
			      enum ieee80211_band band)
{
R
Ron Rindjunsky 已提交
338 339 340 341
	u16 max_bit_rate = 0;
	u8 rx_chains_num = priv->hw_params.rx_chains_num;
	u8 tx_chains_num = priv->hw_params.tx_chains_num;

R
Ron Rindjunsky 已提交
342
	ht_info->cap = 0;
J
Johannes Berg 已提交
343
	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
R
Ron Rindjunsky 已提交
344

J
Johannes Berg 已提交
345
	ht_info->ht_supported = true;
R
Ron Rindjunsky 已提交
346

J
Johannes Berg 已提交
347 348 349
	ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
	ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
	ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
350
			     (WLAN_HT_CAP_SM_PS_DISABLED << 2));
R
Ron Rindjunsky 已提交
351 352

	max_bit_rate = MAX_BIT_RATE_20_MHZ;
R
Ron Rindjunsky 已提交
353
	if (priv->hw_params.fat_channel & BIT(band)) {
J
Johannes Berg 已提交
354 355 356
		ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
		ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
		ht_info->mcs.rx_mask[4] = 0x01;
R
Ron Rindjunsky 已提交
357
		max_bit_rate = MAX_BIT_RATE_40_MHZ;
R
Ron Rindjunsky 已提交
358 359 360
	}

	if (priv->cfg->mod_params->amsdu_size_8K)
J
Johannes Berg 已提交
361
		ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
R
Ron Rindjunsky 已提交
362 363 364 365

	ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
	ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;

J
Johannes Berg 已提交
366
	ht_info->mcs.rx_mask[0] = 0xFF;
R
Ron Rindjunsky 已提交
367
	if (rx_chains_num >= 2)
J
Johannes Berg 已提交
368
		ht_info->mcs.rx_mask[1] = 0xFF;
R
Ron Rindjunsky 已提交
369
	if (rx_chains_num >= 3)
J
Johannes Berg 已提交
370
		ht_info->mcs.rx_mask[2] = 0xFF;
R
Ron Rindjunsky 已提交
371 372 373

	/* Highest supported Rx data rate */
	max_bit_rate *= rx_chains_num;
J
Johannes Berg 已提交
374 375
	WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
	ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
R
Ron Rindjunsky 已提交
376 377

	/* Tx MCS capabilities */
J
Johannes Berg 已提交
378
	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
R
Ron Rindjunsky 已提交
379
	if (tx_chains_num != rx_chains_num) {
J
Johannes Berg 已提交
380 381 382
		ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
		ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
				IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
R
Ron Rindjunsky 已提交
383
	}
R
Ron Rindjunsky 已提交
384 385 386 387 388 389 390 391
}

static void iwlcore_init_hw_rates(struct iwl_priv *priv,
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
392
		rates[i].bitrate = iwl_rates[i].ieee * 5;
R
Ron Rindjunsky 已提交
393 394 395 396 397 398 399 400
		rates[i].hw_value = i; /* Rate scaling will work on indexes */
		rates[i].hw_value_short = i;
		rates[i].flags = 0;
		if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
			/*
			 * If CCK != 1M then set short preamble rate flag.
			 */
			rates[i].flags |=
401
				(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
R
Ron Rindjunsky 已提交
402 403 404 405 406
					0 : IEEE80211_RATE_SHORT_PREAMBLE;
		}
	}
}

407

R
Ron Rindjunsky 已提交
408 409 410
/**
 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 */
411
int iwlcore_init_geos(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
412 413 414 415 416 417 418 419 420 421
{
	struct iwl_channel_info *ch;
	struct ieee80211_supported_band *sband;
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
422
		IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
R
Ron Rindjunsky 已提交
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445
		set_bit(STATUS_GEO_CONFIGURED, &priv->status);
		return 0;
	}

	channels = kzalloc(sizeof(struct ieee80211_channel) *
			   priv->channel_count, GFP_KERNEL);
	if (!channels)
		return -ENOMEM;

	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
	sband = &priv->bands[IEEE80211_BAND_5GHZ];
	sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
	/* just OFDM */
	sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
	sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;

446
	if (priv->cfg->sku & IWL_SKU_N)
J
Johannes Berg 已提交
447
		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
448
					 IEEE80211_BAND_5GHZ);
R
Ron Rindjunsky 已提交
449 450 451 452 453 454 455

	sband = &priv->bands[IEEE80211_BAND_2GHZ];
	sband->channels = channels;
	/* OFDM & CCK */
	sband->bitrates = rates;
	sband->n_bitrates = IWL_RATE_COUNT;

456
	if (priv->cfg->sku & IWL_SKU_N)
J
Johannes Berg 已提交
457
		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
458
					 IEEE80211_BAND_2GHZ);
R
Ron Rindjunsky 已提交
459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492

	priv->ieee_channels = channels;
	priv->ieee_rates = rates;

	for (i = 0;  i < priv->channel_count; i++) {
		ch = &priv->channel_info[i];

		/* FIXME: might be removed if scan is OK */
		if (!is_channel_valid(ch))
			continue;

		if (is_channel_a_band(ch))
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
		else
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];

		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq =
				ieee80211_channel_to_frequency(ch->channel);
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
		geo_ch->hw_value = ch->channel;

		if (is_channel_valid(ch)) {
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;

			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;

			if (ch->flags & EEPROM_CHANNEL_RADAR)
				geo_ch->flags |= IEEE80211_CHAN_RADAR;

493
			geo_ch->flags |= ch->fat_extension_channel;
494

495 496
			if (ch->max_power_avg > priv->tx_power_channel_lmt)
				priv->tx_power_channel_lmt = ch->max_power_avg;
R
Ron Rindjunsky 已提交
497 498 499 500 501 502 503
		} else {
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
		}

		/* Save flags for reg domain usage */
		geo_ch->orig_flags = geo_ch->flags;

504
		IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
R
Ron Rindjunsky 已提交
505 506 507 508 509 510 511 512 513
				ch->channel, geo_ch->center_freq,
				is_channel_a_band(ch) ?  "5.2" : "2.4",
				geo_ch->flags & IEEE80211_CHAN_DISABLED ?
				"restricted" : "valid",
				 geo_ch->flags);
	}

	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
T
Tomas Winkler 已提交
514 515
		IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
			"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
516 517
			   priv->pci_dev->device,
			   priv->pci_dev->subsystem_device);
R
Ron Rindjunsky 已提交
518 519 520
		priv->cfg->sku &= ~IWL_SKU_A;
	}

T
Tomas Winkler 已提交
521
	IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
522 523
		   priv->bands[IEEE80211_BAND_2GHZ].n_channels,
		   priv->bands[IEEE80211_BAND_5GHZ].n_channels);
R
Ron Rindjunsky 已提交
524 525 526 527 528

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}
529
EXPORT_SYMBOL(iwlcore_init_geos);
R
Ron Rindjunsky 已提交
530 531 532 533

/*
 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 */
534
void iwlcore_free_geos(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
535 536 537 538 539
{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
540
EXPORT_SYMBOL(iwlcore_free_geos);
R
Ron Rindjunsky 已提交
541

542
static bool is_single_rx_stream(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
543 544
{
	return !priv->current_ht_config.is_ht ||
J
Johannes Berg 已提交
545 546
	       ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
		(priv->current_ht_config.mcs.rx_mask[2] == 0));
R
Ron Rindjunsky 已提交
547
}
548

549 550 551 552 553 554 555 556 557 558
static u8 iwl_is_channel_extension(struct iwl_priv *priv,
				   enum ieee80211_band band,
				   u16 channel, u8 extension_chan_offset)
{
	const struct iwl_channel_info *ch_info;

	ch_info = iwl_get_channel_info(priv, band, channel);
	if (!is_channel_valid(ch_info))
		return 0;

J
Johannes Berg 已提交
559
	if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
560 561
		return !(ch_info->fat_extension_channel &
					IEEE80211_CHAN_NO_FAT_ABOVE);
J
Johannes Berg 已提交
562
	else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
563 564
		return !(ch_info->fat_extension_channel &
					IEEE80211_CHAN_NO_FAT_BELOW);
565 566 567 568 569

	return 0;
}

u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
J
Johannes Berg 已提交
570
			 struct ieee80211_sta_ht_cap *sta_ht_inf)
571 572 573 574 575
{
	struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;

	if ((!iwl_ht_conf->is_ht) ||
	   (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
J
Johannes Berg 已提交
576
	   (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
577 578 579 580
		return 0;

	if (sta_ht_inf) {
		if ((!sta_ht_inf->ht_supported) ||
J
Johannes Berg 已提交
581
		   (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
582 583 584 585
			return 0;
	}

	return iwl_is_channel_extension(priv, priv->band,
J
Johannes Berg 已提交
586 587
					le16_to_cpu(priv->staging_rxon.channel),
					iwl_ht_conf->extension_chan_offset);
588 589 590
}
EXPORT_SYMBOL(iwl_is_fat_tx_allowed);

591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (hw_decrypt)
		rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
	else
		rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;

}
EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);

/**
 * iwl_check_rxon_cmd - validate RXON structure is valid
 *
 * NOTE:  This is really only useful during development and can eventually
 * be #ifdef'd out once the driver is stable and folks aren't actively
 * making changes
 */
int iwl_check_rxon_cmd(struct iwl_priv *priv)
{
	int error = 0;
	int counter = 1;
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
		error |= le32_to_cpu(rxon->flags &
				(RXON_FLG_TGJ_NARROW_BAND_MSK |
				 RXON_FLG_RADAR_DETECT_MSK));
		if (error)
			IWL_WARN(priv, "check 24G fields %d | %d\n",
				    counter++, error);
	} else {
		error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
				0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
		if (error)
			IWL_WARN(priv, "check 52 fields %d | %d\n",
				    counter++, error);
		error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
		if (error)
			IWL_WARN(priv, "check 52 CCK %d | %d\n",
				    counter++, error);
	}
	error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
	if (error)
		IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);

	/* make sure basic rates 6Mbps and 1Mbps are supported */
	error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
		  ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
	if (error)
		IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);

	error |= (le16_to_cpu(rxon->assoc_id) > 2007);
	if (error)
		IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK and short slot %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
			RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
	if (error)
		IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
			    counter++, error);

	if (error)
		IWL_WARN(priv, "Tuning to channel %d\n",
			    le16_to_cpu(rxon->channel));

	if (error) {
		IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
		return -1;
	}
	return 0;
}
EXPORT_SYMBOL(iwl_check_rxon_cmd);

/**
 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 * @priv: staging_rxon is compared to active_rxon
 *
 * If the RXON structure is changing enough to require a new tune,
 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 */
int iwl_full_rxon_required(struct iwl_priv *priv)
{

	/* These items are only settable from the full RXON command */
	if (!(iwl_is_associated(priv)) ||
	    compare_ether_addr(priv->staging_rxon.bssid_addr,
			       priv->active_rxon.bssid_addr) ||
	    compare_ether_addr(priv->staging_rxon.node_addr,
			       priv->active_rxon.node_addr) ||
	    compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
			       priv->active_rxon.wlap_bssid_addr) ||
	    (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
	    (priv->staging_rxon.channel != priv->active_rxon.channel) ||
	    (priv->staging_rxon.air_propagation !=
	     priv->active_rxon.air_propagation) ||
	    (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
	    (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
	    (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
		return 1;

	/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
	 * be updated with the RXON_ASSOC command -- however only some
	 * flag transitions are allowed using RXON_ASSOC */

	/* Check if we are not switching bands */
	if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
	    (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
		return 1;

	/* Check if we are switching association toggle */
	if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
		(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
		return 1;

	return 0;
}
EXPORT_SYMBOL(iwl_full_rxon_required);

u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
{
	int i;
	int rate_mask;

	/* Set rate mask*/
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
	else
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;

	/* Find lowest valid rate */
	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
					i = iwl_rates[i].next_ieee) {
		if (rate_mask & (1 << i))
			return iwl_rates[i].plcp;
	}

	/* No valid rate was found. Assign the lowest one */
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		return IWL_RATE_1M_PLCP;
	else
		return IWL_RATE_6M_PLCP;
}
EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);

752 753
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
{
G
Gregory Greenman 已提交
754
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
755 756
	u32 val;

757 758 759 760 761 762
	if (!ht_info->is_ht) {
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
			RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
			RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
			RXON_FLG_FAT_PROT_MSK |
			RXON_FLG_HT_PROT_MSK);
763
		return;
764
	}
765 766 767 768 769 770 771 772 773 774

	/* Set up channel bandwidth:  20 MHz only, or 20/40 mixed if fat ok */
	if (iwl_is_fat_tx_allowed(priv, NULL))
		rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
	else
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
				 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);

	/* Note: control channel is opposite of extension channel */
	switch (ht_info->extension_chan_offset) {
J
Johannes Berg 已提交
775
	case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
776 777
		rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
		break;
J
Johannes Berg 已提交
778
	case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
779 780
		rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
		break;
J
Johannes Berg 已提交
781
	case IEEE80211_HT_PARAM_CHA_SEC_NONE:
782 783 784 785 786 787 788 789 790 791 792
	default:
		rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
		break;
	}

	val = ht_info->ht_protection;

	rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);

	iwl_set_rxon_chain(priv);

793
	IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
794
			"rxon flags 0x%X operation mode :0x%X "
J
Johannes Berg 已提交
795
			"extension channel offset 0x%x\n",
J
Johannes Berg 已提交
796 797 798
			ht_info->mcs.rx_mask[0],
			ht_info->mcs.rx_mask[1],
			ht_info->mcs.rx_mask[2],
799
			le32_to_cpu(rxon->flags), ht_info->ht_protection,
J
Johannes Berg 已提交
800
			ht_info->extension_chan_offset);
801 802 803 804
	return;
}
EXPORT_SYMBOL(iwl_set_rxon_ht);

805 806 807 808 809 810
#define IWL_NUM_RX_CHAINS_MULTIPLE	3
#define IWL_NUM_RX_CHAINS_SINGLE	2
#define IWL_NUM_IDLE_CHAINS_DUAL	2
#define IWL_NUM_IDLE_CHAINS_SINGLE	1

/* Determine how many receiver/antenna chains to use.
R
Ron Rindjunsky 已提交
811 812 813 814
 * More provides better reception via diversity.  Fewer saves power.
 * MIMO (dual stream) requires at least 2, but works better with 3.
 * This does not determine *which* chains to use, just how many.
 */
815
static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
816
{
817 818
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
R
Ron Rindjunsky 已提交
819 820

	/* # of Rx chains to use when expecting MIMO. */
821 822
	if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
						 WLAN_HT_CAP_SM_PS_STATIC)))
823
		return IWL_NUM_RX_CHAINS_SINGLE;
R
Ron Rindjunsky 已提交
824
	else
825
		return IWL_NUM_RX_CHAINS_MULTIPLE;
826
}
R
Ron Rindjunsky 已提交
827

828 829 830 831
static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
{
	int idle_cnt;
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
R
Ron Rindjunsky 已提交
832
	/* # Rx chains when idling and maybe trying to save power */
833
	switch (priv->current_ht_config.sm_ps) {
834 835
	case WLAN_HT_CAP_SM_PS_STATIC:
	case WLAN_HT_CAP_SM_PS_DYNAMIC:
836 837
		idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
					IWL_NUM_IDLE_CHAINS_SINGLE;
R
Ron Rindjunsky 已提交
838
		break;
839
	case WLAN_HT_CAP_SM_PS_DISABLED:
840
		idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
R
Ron Rindjunsky 已提交
841
		break;
842
	case WLAN_HT_CAP_SM_PS_INVALID:
R
Ron Rindjunsky 已提交
843
	default:
844
		IWL_ERR(priv, "invalid mimo ps mode %d\n",
845
			   priv->current_ht_config.sm_ps);
846 847
		WARN_ON(1);
		idle_cnt = -1;
R
Ron Rindjunsky 已提交
848 849
		break;
	}
850
	return idle_cnt;
R
Ron Rindjunsky 已提交
851 852
}

853 854 855 856 857 858 859 860 861 862 863
/* up to 4 chains */
static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
{
	u8 res;
	res = (chain_bitmap & BIT(0)) >> 0;
	res += (chain_bitmap & BIT(1)) >> 1;
	res += (chain_bitmap & BIT(2)) >> 2;
	res += (chain_bitmap & BIT(4)) >> 4;
	return res;
}

864 865 866 867 868 869 870 871 872 873 874 875
/**
 * iwl_is_monitor_mode - Determine if interface in monitor mode
 *
 * priv->iw_mode is set in add_interface, but add_interface is
 * never called for monitor mode. The only way mac80211 informs us about
 * monitor mode is through configuring filters (call to configure_filter).
 */
static bool iwl_is_monitor_mode(struct iwl_priv *priv)
{
	return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
}

R
Ron Rindjunsky 已提交
876 877 878 879 880 881 882 883
/**
 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 *
 * Selects how many and which Rx receivers/antennas/chains to use.
 * This should not be used for scan command ... it puts data in wrong place.
 */
void iwl_set_rxon_chain(struct iwl_priv *priv)
{
884 885
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
886 887
	u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
	u32 active_chains;
888
	u16 rx_chain;
R
Ron Rindjunsky 已提交
889 890 891 892 893

	/* Tell uCode which antennas are actually connected.
	 * Before first association, we assume all antennas are connected.
	 * Just after first association, iwl_chain_noise_calibration()
	 *    checks which antennas actually *are* connected. */
894 895 896 897 898 899
	 if (priv->chain_noise_data.active_chains)
		active_chains = priv->chain_noise_data.active_chains;
	else
		active_chains = priv->hw_params.valid_rx_ant;

	rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
R
Ron Rindjunsky 已提交
900 901

	/* How many receivers should we use? */
902 903 904 905
	active_rx_cnt = iwl_get_active_rx_chain_count(priv);
	idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);


906 907 908 909 910 911 912 913 914
	/* correct rx chain count according hw settings
	 * and chain noise calibration
	 */
	valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
	if (valid_rx_cnt < active_rx_cnt)
		active_rx_cnt = valid_rx_cnt;

	if (valid_rx_cnt < idle_rx_cnt)
		idle_rx_cnt = valid_rx_cnt;
915 916 917 918

	rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
	rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;

919 920 921 922 923 924 925 926 927 928 929 930 931
	/* copied from 'iwl_bg_request_scan()' */
	/* Force use of chains B and C (0x6) for Rx for 4965
	 * Avoid A (0x1) because of its off-channel reception on A-band.
	 * MIMO is not used here, but value is required */
	if (iwl_is_monitor_mode(priv) &&
	    !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
	    ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
		rx_chain = 0x07 << RXON_RX_CHAIN_VALID_POS;
		rx_chain |= 0x06 << RXON_RX_CHAIN_FORCE_SEL_POS;
		rx_chain |= 0x07 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
		rx_chain |= 0x01 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
	}

932 933
	priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);

934
	if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
R
Ron Rindjunsky 已提交
935 936 937 938
		priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
	else
		priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;

939
	IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
940 941 942 943 944
			priv->staging_rxon.rx_chain,
			active_rx_cnt, idle_rx_cnt);

	WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
		active_rx_cnt < idle_rx_cnt);
R
Ron Rindjunsky 已提交
945 946
}
EXPORT_SYMBOL(iwl_set_rxon_chain);
947 948

/**
949
 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
950 951 952 953 954 955 956 957
 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 * @channel: Any channel valid for the requested phymode

 * In addition to setting the staging RXON, priv->phymode is also set.
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 * in the staging RXON flag structure based on the phymode
 */
958
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
959
{
960 961 962
	enum ieee80211_band band = ch->band;
	u16 channel = ieee80211_frequency_to_channel(ch->center_freq);

963
	if (!iwl_get_channel_info(priv, band, channel)) {
964
		IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
			       channel, band);
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
	    (priv->band == band))
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
	if (band == IEEE80211_BAND_5GHZ)
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

	priv->band = band;

981
	IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
982 983 984

	return 0;
}
R
Ron Rindjunsky 已提交
985
EXPORT_SYMBOL(iwl_set_rxon_channel);
986

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
void iwl_set_flags_for_band(struct iwl_priv *priv,
			    enum ieee80211_band band)
{
	if (band == IEEE80211_BAND_5GHZ) {
		priv->staging_rxon.flags &=
		    ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
		      | RXON_FLG_CCK_MSK);
		priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
	} else {
		/* Copied from iwl_post_associate() */
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
		priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
		priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
	}
}
EXPORT_SYMBOL(iwl_set_flags_for_band);

/*
 * initialize rxon structure with default values from eeprom
 */
void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
{
	const struct iwl_channel_info *ch_info;

	memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));

	switch (mode) {
	case NL80211_IFTYPE_AP:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
		break;

	case NL80211_IFTYPE_STATION:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	case NL80211_IFTYPE_ADHOC:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
		priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
		priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
						  RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	case NL80211_IFTYPE_MONITOR:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
		priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
		    RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
		break;
	default:
		IWL_ERR(priv, "Unsupported interface type %d\n", mode);
		break;
	}

#if 0
	/* TODO:  Figure out when short_preamble would be set and cache from
	 * that */
	if (!hw_to_local(priv->hw)->short_preamble)
		priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
#endif

	ch_info = iwl_get_channel_info(priv, priv->band,
				       le16_to_cpu(priv->active_rxon.channel));

	if (!ch_info)
		ch_info = &priv->channel_info[0];

	/*
	 * in some case A channels are all non IBSS
	 * in this case force B/G channel
	 */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
	    !(is_channel_ibss(ch_info)))
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	priv->band = ch_info->band;

	iwl_set_flags_for_band(priv, priv->band);

	priv->staging_rxon.ofdm_basic_rates =
	    (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
	priv->staging_rxon.cck_basic_rates =
	    (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
					RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
	priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
	priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
}
EXPORT_SYMBOL(iwl_connection_init_rx_config);

void iwl_set_rate(struct iwl_priv *priv)
{
	const struct ieee80211_supported_band *hw = NULL;
	struct ieee80211_rate *rate;
	int i;

	hw = iwl_get_hw_mode(priv, priv->band);
	if (!hw) {
		IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
		return;
	}

	priv->active_rate = 0;
	priv->active_rate_basic = 0;

	for (i = 0; i < hw->n_bitrates; i++) {
		rate = &(hw->bitrates[i]);
		if (rate->hw_value < IWL_RATE_COUNT)
			priv->active_rate |= (1 << rate->hw_value);
	}

1111
	IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
		       priv->active_rate, priv->active_rate_basic);

	/*
	 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
	 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
	 * OFDM
	 */
	if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
		priv->staging_rxon.cck_basic_rates =
		    ((priv->active_rate_basic &
		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
	else
		priv->staging_rxon.cck_basic_rates =
		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
		priv->staging_rxon.ofdm_basic_rates =
		    ((priv->active_rate_basic &
		      (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
		      IWL_FIRST_OFDM_RATE) & 0xFF;
	else
		priv->staging_rxon.ofdm_basic_rates =
		   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
}
EXPORT_SYMBOL(iwl_set_rate);

void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
	struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1143
	IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
		      le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
	rxon->channel = csa->channel;
	priv->staging_rxon.channel = csa->channel;
}
EXPORT_SYMBOL(iwl_rx_csa);

#ifdef CONFIG_IWLWIFI_DEBUG
static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

1155
	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1156
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1157 1158 1159
	IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
	IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
	IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1160
			le32_to_cpu(rxon->filter_flags));
1161 1162
	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1163
			rxon->ofdm_basic_rates);
1164 1165 1166 1167
	IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
	IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
	IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
	IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
}
#endif

/**
 * iwl_irq_handle_error - called for HW or SW error interrupt from card
 */
void iwl_irq_handle_error(struct iwl_priv *priv)
{
	/* Set the FW error flag -- cleared on iwl_down */
	set_bit(STATUS_FW_ERROR, &priv->status);

	/* Cancel currently queued command. */
	clear_bit(STATUS_HCMD_ACTIVE, &priv->status);

#ifdef CONFIG_IWLWIFI_DEBUG
	if (priv->debug_level & IWL_DL_FW_ERRORS) {
		iwl_dump_nic_error_log(priv);
		iwl_dump_nic_event_log(priv);
		iwl_print_rx_config_cmd(priv);
	}
#endif

	wake_up_interruptible(&priv->wait_command_queue);

	/* Keep the restart process from trying to send host
	 * commands by clearing the INIT status bit */
	clear_bit(STATUS_READY, &priv->status);

	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1197
		IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
			  "Restarting adapter due to uCode error.\n");

		if (iwl_is_associated(priv)) {
			memcpy(&priv->recovery_rxon, &priv->active_rxon,
			       sizeof(priv->recovery_rxon));
			priv->error_recovering = 1;
		}
		if (priv->cfg->mod_params->restart_fw)
			queue_work(priv->workqueue, &priv->restart);
	}
}
EXPORT_SYMBOL(iwl_irq_handle_error);

void iwl_configure_filter(struct ieee80211_hw *hw,
			  unsigned int changed_flags,
			  unsigned int *total_flags,
			  int mc_count, struct dev_addr_list *mc_list)
{
	struct iwl_priv *priv = hw->priv;
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;

1219
	IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
			changed_flags, *total_flags);

	if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
		if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
			*filter_flags |= RXON_FILTER_PROMISC_MSK;
		else
			*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
	}
	if (changed_flags & FIF_ALLMULTI) {
		if (*total_flags & FIF_ALLMULTI)
			*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
		else
			*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
	}
	if (changed_flags & FIF_CONTROL) {
		if (*total_flags & FIF_CONTROL)
			*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
		else
			*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
	}
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
			*filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
		else
			*filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
	}

	/* We avoid iwl_commit_rxon here to commit the new filter flags
	 * since mac80211 will call ieee80211_hw_config immediately.
	 * (mc_list is not supported at this time). Otherwise, we need to
	 * queue a background iwl_commit_rxon work.
	 */

	*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}
EXPORT_SYMBOL(iwl_configure_filter);

T
Tomas Winkler 已提交
1258
int iwl_setup_mac(struct iwl_priv *priv)
1259
{
T
Tomas Winkler 已提交
1260
	int ret;
1261
	struct ieee80211_hw *hw = priv->hw;
1262
	hw->rate_control_algorithm = "iwl-agn-rs";
1263

1264
	/* Tell mac80211 our characteristics */
1265
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
S
Sujith 已提交
1266
		    IEEE80211_HW_NOISE_DBM |
1267 1268
		    IEEE80211_HW_AMPDU_AGGREGATION |
		    IEEE80211_HW_SUPPORTS_PS;
1269 1270 1271
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);
1272

1273
	hw->wiphy->custom_regulatory = true;
1274
	hw->wiphy->max_scan_ssids = 1;
1275

1276 1277
	/* Default value; 4 EDCA QOS priorities */
	hw->queues = 4;
1278 1279
	/* queues to support 11n aggregation */
	if (priv->cfg->sku & IWL_SKU_N)
1280
		hw->ampdu_queues = priv->cfg->mod_params->num_of_ampdu_queues;
T
Tomas Winkler 已提交
1281 1282

	hw->conf.beacon_int = 100;
1283
	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
T
Tomas Winkler 已提交
1284 1285 1286 1287 1288 1289 1290 1291 1292 1293

	if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
			&priv->bands[IEEE80211_BAND_2GHZ];
	if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
			&priv->bands[IEEE80211_BAND_5GHZ];

	ret = ieee80211_register_hw(priv->hw);
	if (ret) {
1294
		IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
T
Tomas Winkler 已提交
1295 1296 1297 1298 1299
		return ret;
	}
	priv->mac80211_registered = 1;

	return 0;
1300
}
T
Tomas Winkler 已提交
1301
EXPORT_SYMBOL(iwl_setup_mac);
1302

1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313
int iwl_set_hw_params(struct iwl_priv *priv)
{
	priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
	priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
	priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
	if (priv->cfg->mod_params->amsdu_size_8K)
		priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
	else
		priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
	priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;

1314 1315 1316
	if (priv->cfg->mod_params->disable_11n)
		priv->cfg->sku &= ~IWL_SKU_N;

1317 1318 1319 1320
	/* Device-specific setup */
	return priv->cfg->ops->lib->set_hw_params(priv);
}
EXPORT_SYMBOL(iwl_set_hw_params);
T
Tomas Winkler 已提交
1321 1322

int iwl_init_drv(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
{
	int ret;

	priv->ibss_beacon = NULL;

	spin_lock_init(&priv->lock);
	spin_lock_init(&priv->power_data.lock);
	spin_lock_init(&priv->sta_lock);
	spin_lock_init(&priv->hcmd_lock);

	INIT_LIST_HEAD(&priv->free_frames);

	mutex_init(&priv->mutex);

	/* Clear the driver's (not device's) station table */
1338
	iwl_clear_stations_table(priv);
R
Ron Rindjunsky 已提交
1339 1340 1341 1342 1343 1344

	priv->data_retry_limit = -1;
	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
	priv->band = IEEE80211_BAND_2GHZ;

1345
	priv->iw_mode = NL80211_IFTYPE_STATION;
R
Ron Rindjunsky 已提交
1346

1347
	priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
R
Ron Rindjunsky 已提交
1348 1349 1350

	/* Choose which receivers/antennas to use */
	iwl_set_rxon_chain(priv);
T
Tomas Winkler 已提交
1351
	iwl_init_scan_params(priv);
R
Ron Rindjunsky 已提交
1352 1353 1354 1355 1356 1357 1358

	iwl_reset_qos(priv);

	priv->qos_data.qos_active = 0;
	priv->qos_data.qos_cap.val = 0;

	priv->rates_mask = IWL_RATES_MASK;
1359 1360
	/* If power management is turned on, default to CAM mode */
	priv->power_mode = IWL_POWER_MODE_CAM;
1361
	priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
R
Ron Rindjunsky 已提交
1362 1363 1364

	ret = iwl_init_channel_map(priv);
	if (ret) {
1365
		IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
R
Ron Rindjunsky 已提交
1366 1367 1368 1369 1370
		goto err;
	}

	ret = iwlcore_init_geos(priv);
	if (ret) {
1371
		IWL_ERR(priv, "initializing geos failed: %d\n", ret);
R
Ron Rindjunsky 已提交
1372 1373
		goto err_free_channel_map;
	}
1374
	iwlcore_init_hw_rates(priv, priv->ieee_rates);
R
Ron Rindjunsky 已提交
1375 1376 1377 1378 1379 1380 1381 1382

	return 0;

err_free_channel_map:
	iwl_free_channel_map(priv);
err:
	return ret;
}
T
Tomas Winkler 已提交
1383
EXPORT_SYMBOL(iwl_init_drv);
R
Ron Rindjunsky 已提交
1384

1385 1386 1387 1388
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
	int ret = 0;
	if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1389
		IWL_WARN(priv, "Requested user TXPOWER %d below limit.\n",
1390 1391 1392 1393 1394
			    priv->tx_power_user_lmt);
		return -EINVAL;
	}

	if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1395
		IWL_WARN(priv, "Requested user TXPOWER %d above limit.\n",
1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
			    priv->tx_power_user_lmt);
		return -EINVAL;
	}

	if (priv->tx_power_user_lmt != tx_power)
		force = true;

	priv->tx_power_user_lmt = tx_power;

	if (force && priv->cfg->ops->lib->send_tx_power)
		ret = priv->cfg->ops->lib->send_tx_power(priv);

	return ret;
}
EXPORT_SYMBOL(iwl_set_tx_power);

T
Tomas Winkler 已提交
1412
void iwl_uninit_drv(struct iwl_priv *priv)
1413
{
1414
	iwl_calib_free_results(priv);
T
Tomas Winkler 已提交
1415 1416
	iwlcore_free_geos(priv);
	iwl_free_channel_map(priv);
1417
	kfree(priv->scan);
1418
}
T
Tomas Winkler 已提交
1419
EXPORT_SYMBOL(iwl_uninit_drv);
1420

1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432

void iwl_disable_interrupts(struct iwl_priv *priv)
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
	iwl_write32(priv, CSR_INT, 0xffffffff);
	iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1433
	IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1434 1435 1436 1437 1438
}
EXPORT_SYMBOL(iwl_disable_interrupts);

void iwl_enable_interrupts(struct iwl_priv *priv)
{
1439
	IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1440 1441 1442 1443 1444
	set_bit(STATUS_INT_ENABLED, &priv->status);
	iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
}
EXPORT_SYMBOL(iwl_enable_interrupts);

1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459
int iwl_send_bt_config(struct iwl_priv *priv)
{
	struct iwl_bt_cmd bt_cmd = {
		.flags = 3,
		.lead_time = 0xAA,
		.max_kill = 1,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

	return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
				sizeof(struct iwl_bt_cmd), &bt_cmd);
}
EXPORT_SYMBOL(iwl_send_bt_config);

1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
{
	u32 stat_flags = 0;
	struct iwl_host_cmd cmd = {
		.id = REPLY_STATISTICS_CMD,
		.meta.flags = flags,
		.len = sizeof(stat_flags),
		.data = (u8 *) &stat_flags,
	};
	return iwl_send_cmd(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_statistics_request);
1472

1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484
/**
 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
 *   using sample data 100 bytes apart.  If these sample points are good,
 *   it's a pretty good bet that everything between them is good, too.
 */
static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
{
	u32 val;
	int ret = 0;
	u32 errcnt = 0;
	u32 i;

1485
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1486 1487 1488 1489 1490 1491 1492 1493 1494 1495

	ret = iwl_grab_nic_access(priv);
	if (ret)
		return ret;

	for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
		/* read data comes through single port, auto-incr addr */
		/* NOTE: Use the debugless read so we don't flood kernel log
		 * if IWL_DL_IO is set */
		iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1496
			i + IWL49_RTC_INST_LOWER_BOUND);
1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (val != le32_to_cpu(*image)) {
			ret = -EIO;
			errcnt++;
			if (errcnt >= 3)
				break;
		}
	}

	iwl_release_nic_access(priv);

	return ret;
}

/**
 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
 *     looking at all data.
 */
static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
				 u32 len)
{
	u32 val;
	u32 save_len = len;
	int ret = 0;
	u32 errcnt;

1523
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1524 1525 1526 1527 1528

	ret = iwl_grab_nic_access(priv);
	if (ret)
		return ret;

1529 1530
	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
			   IWL49_RTC_INST_LOWER_BOUND);
1531 1532 1533 1534 1535 1536 1537 1538

	errcnt = 0;
	for (; len > 0; len -= sizeof(u32), image++) {
		/* read data comes through single port, auto-incr addr */
		/* NOTE: Use the debugless read so we don't flood kernel log
		 * if IWL_DL_IO is set */
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (val != le32_to_cpu(*image)) {
1539
			IWL_ERR(priv, "uCode INST section is invalid at "
1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  save_len - len, val, le32_to_cpu(*image));
			ret = -EIO;
			errcnt++;
			if (errcnt >= 20)
				break;
		}
	}

	iwl_release_nic_access(priv);

	if (!errcnt)
1552 1553
		IWL_DEBUG_INFO(priv,
		    "ucode image in INSTRUCTION memory is good\n");
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572

	return ret;
}

/**
 * iwl_verify_ucode - determine which instruction image is in SRAM,
 *    and verify its contents
 */
int iwl_verify_ucode(struct iwl_priv *priv)
{
	__le32 *image;
	u32 len;
	int ret;

	/* Try bootstrap */
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
1573
		IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1574 1575 1576 1577 1578 1579 1580 1581
		return 0;
	}

	/* Try initialize */
	image = (__le32 *)priv->ucode_init.v_addr;
	len = priv->ucode_init.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
1582
		IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1583 1584 1585 1586 1587 1588 1589 1590
		return 0;
	}

	/* Try runtime/protocol */
	image = (__le32 *)priv->ucode_code.v_addr;
	len = priv->ucode_code.len;
	ret = iwlcore_verify_inst_sparse(priv, image, len);
	if (!ret) {
1591
		IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1592 1593 1594
		return 0;
	}

1595
	IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607

	/* Since nothing seems to match, show first several data entries in
	 * instruction SRAM, so maybe visual inspection will give a clue.
	 * Selection of bootstrap image (vs. other images) is arbitrary. */
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
	ret = iwl_verify_inst_full(priv, image, len);

	return ret;
}
EXPORT_SYMBOL(iwl_verify_ucode);

1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640

static const char *desc_lookup_text[] = {
	"OK",
	"FAIL",
	"BAD_PARAM",
	"BAD_CHECKSUM",
	"NMI_INTERRUPT_WDG",
	"SYSASSERT",
	"FATAL_ERROR",
	"BAD_COMMAND",
	"HW_ERROR_TUNE_LOCK",
	"HW_ERROR_TEMPERATURE",
	"ILLEGAL_CHAN_FREQ",
	"VCC_NOT_STABLE",
	"FH_ERROR",
	"NMI_INTERRUPT_HOST",
	"NMI_INTERRUPT_ACTION_PT",
	"NMI_INTERRUPT_UNKNOWN",
	"UCODE_VERSION_MISMATCH",
	"HW_ERROR_ABS_LOCK",
	"HW_ERROR_CAL_LOCK_FAIL",
	"NMI_INTERRUPT_INST_ACTION_PT",
	"NMI_INTERRUPT_DATA_ACTION_PT",
	"NMI_TRM_HW_ER",
	"NMI_INTERRUPT_TRM",
	"NMI_INTERRUPT_BREAK_POINT"
	"DEBUG_0",
	"DEBUG_1",
	"DEBUG_2",
	"DEBUG_3",
	"UNKNOWN"
};

1641 1642
static const char *desc_lookup(int i)
{
1643 1644 1645 1646
	int max = ARRAY_SIZE(desc_lookup_text) - 1;

	if (i < 0 || i > max)
		i = max;
1647

1648
	return desc_lookup_text[i];
1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
}

#define ERROR_START_OFFSET  (1 * sizeof(u32))
#define ERROR_ELEM_SIZE     (7 * sizeof(u32))

void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
	u32 data2, line;
	u32 desc, time, count, base, data1;
	u32 blink1, blink2, ilink1, ilink2;
1659
	int ret;
1660

1661 1662 1663 1664
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1665 1666

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1667
		IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1668 1669 1670
		return;
	}

1671 1672
	ret = iwl_grab_nic_access(priv);
	if (ret) {
1673
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
1674 1675 1676 1677 1678 1679
		return;
	}

	count = iwl_read_targ_mem(priv, base);

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1680 1681 1682
		IWL_ERR(priv, "Start IWL Error Log Dump:\n");
		IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
			priv->status, count);
1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694
	}

	desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
	blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
	blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
	ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
	ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
	data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
	data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
	line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
	time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));

1695
	IWL_ERR(priv, "Desc                               Time       "
1696
		"data1      data2      line\n");
1697
	IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1698
		desc_lookup(desc), desc, time, data1, data2, line);
1699 1700
	IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
	IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1701 1702 1703 1704 1705 1706
		ilink1, ilink2);

	iwl_release_nic_access(priv);
}
EXPORT_SYMBOL(iwl_dump_nic_error_log);

1707 1708 1709 1710 1711
#define EVENT_START_OFFSET  (4 * sizeof(u32))

/**
 * iwl_print_event_log - Dump error event log to syslog
 *
1712
 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1713
 */
1714
static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1715 1716 1717 1718 1719 1720 1721 1722 1723 1724
				u32 num_events, u32 mode)
{
	u32 i;
	u32 base;       /* SRAM byte address of event log header */
	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */

	if (num_events == 0)
		return;
1725 1726 1727 1728
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743

	if (mode == 0)
		event_size = 2 * sizeof(u32);
	else
		event_size = 3 * sizeof(u32);

	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);

	/* "time" is actually "data" for mode 0 (no timestamp).
	* place event id # at far right for easier visual parsing. */
	for (i = 0; i < num_events; i++) {
		ev = iwl_read_targ_mem(priv, ptr);
		ptr += sizeof(u32);
		time = iwl_read_targ_mem(priv, ptr);
		ptr += sizeof(u32);
1744 1745
		if (mode == 0) {
			/* data, ev */
1746
			IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1747
		} else {
1748 1749
			data = iwl_read_targ_mem(priv, ptr);
			ptr += sizeof(u32);
1750
			IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1751
					time, data, ev);
1752 1753 1754 1755 1756 1757
		}
	}
}

void iwl_dump_nic_event_log(struct iwl_priv *priv)
{
1758
	int ret;
1759 1760 1761 1762 1763 1764 1765
	u32 base;       /* SRAM byte address of event log header */
	u32 capacity;   /* event log capacity in # entries */
	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
	u32 num_wraps;  /* # times uCode wrapped to top of log */
	u32 next_entry; /* index of next entry to be written by uCode */
	u32 size;       /* # entries that we'll print */

1766 1767 1768 1769 1770
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);

1771
	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1772
		IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1773 1774 1775
		return;
	}

1776 1777
	ret = iwl_grab_nic_access(priv);
	if (ret) {
1778
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
		return;
	}

	/* event log header */
	capacity = iwl_read_targ_mem(priv, base);
	mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
	num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
	next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
1792
		IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1793 1794 1795 1796
		iwl_release_nic_access(priv);
		return;
	}

1797
	IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811
			size, num_wraps);

	/* if uCode has wrapped back to top of log, start at the oldest entry,
	 * i.e the next one that uCode would fill. */
	if (num_wraps)
		iwl_print_event_log(priv, next_entry,
					capacity - next_entry, mode);
	/* (then/else) start at top of log */
	iwl_print_event_log(priv, 0, next_entry, mode);

	iwl_release_nic_access(priv);
}
EXPORT_SYMBOL(iwl_dump_nic_event_log);

1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824
void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
	spin_unlock_irqrestore(&priv->lock, flags);

	cmd.critical_temperature_R =
		cpu_to_le32(priv->hw_params.ct_kill_threshold);
1825

1826 1827 1828
	ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
			       sizeof(cmd), &cmd);
	if (ret)
1829
		IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1830
	else
1831
		IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1832 1833 1834 1835
			"critical temperature is %d\n",
			cmd.critical_temperature_R);
}
EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1836

1837

1838 1839 1840 1841 1842 1843 1844 1845 1846 1847
/*
 * CARD_STATE_CMD
 *
 * Use: Sets the device's internal card state to enable, disable, or halt
 *
 * When in the 'enable' state the card operates as normal.
 * When in the 'disable' state, the card enters into a low power mode.
 * When in the 'halt' state, the card is shut down and must be fully
 * restarted to come back on.
 */
1848
int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1849 1850 1851 1852 1853 1854 1855 1856 1857 1858
{
	struct iwl_host_cmd cmd = {
		.id = REPLY_CARD_STATE_CMD,
		.len = sizeof(u32),
		.data = &flags,
		.meta.flags = meta_flag,
	};

	return iwl_send_cmd(priv, &cmd);
}
1859
EXPORT_SYMBOL(iwl_send_card_state);
1860 1861 1862 1863 1864 1865 1866 1867

void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
{
	unsigned long flags;

	if (test_bit(STATUS_RF_KILL_SW, &priv->status))
		return;

1868
	IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1869 1870 1871

	iwl_scan_cancel(priv);
	/* FIXME: This is a workaround for AP */
1872
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
		spin_lock_irqsave(&priv->lock, flags);
		iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
			    CSR_UCODE_SW_BIT_RFKILL);
		spin_unlock_irqrestore(&priv->lock, flags);
		/* call the host command only if no hw rf-kill set */
		if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
		    iwl_is_ready(priv))
			iwl_send_card_state(priv,
				CARD_STATE_CMD_DISABLE, 0);
		set_bit(STATUS_RF_KILL_SW, &priv->status);
			/* make sure mac80211 stop sending Tx frame */
		if (priv->mac80211_registered)
			ieee80211_stop_queues(priv->hw);
	}
}
EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);

int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
{
	unsigned long flags;

	if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
		return 0;

1897
	IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
1898 1899 1900 1901

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);

1902 1903 1904 1905 1906 1907 1908 1909
	/* If the driver is up it will receive CARD_STATE_NOTIFICATION
	 * notification where it will clear SW rfkill status.
	 * Setting it here would break the handler. Only if the
	 * interface is down we can set here since we don't
	 * receive any further notification.
	 */
	if (!priv->is_open)
		clear_bit(STATUS_RF_KILL_SW, &priv->status);
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921
	spin_unlock_irqrestore(&priv->lock, flags);

	/* wake up ucode */
	msleep(10);

	spin_lock_irqsave(&priv->lock, flags);
	iwl_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl_grab_nic_access(priv))
		iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->lock, flags);

	if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1922
		IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
1923 1924 1925 1926
				  "disabled by HW switch\n");
		return 0;
	}

1927 1928 1929 1930 1931 1932 1933 1934 1935 1936
	/* when driver is up while rfkill is on, it wont receive
	 * any CARD_STATE_NOTIFICATION notifications so we have to
	 * restart it in here
	 */
	if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
		clear_bit(STATUS_RF_KILL_SW, &priv->status);
		if (!iwl_is_rfkill(priv))
			queue_work(priv->workqueue, &priv->up);
	}

1937 1938 1939 1940
	/* If the driver is already loaded, it will receive
	 * CARD_STATE_NOTIFICATION notifications and the handler will
	 * call restart to reload the driver.
	 */
1941 1942 1943
	return 1;
}
EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
S
Samuel Ortiz 已提交
1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956

void iwl_bg_rf_kill(struct work_struct *work)
{
	struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);

	wake_up_interruptible(&priv->wait_command_queue);

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	mutex_lock(&priv->mutex);

	if (!iwl_is_rfkill(priv)) {
1957
		IWL_DEBUG_RF_KILL(priv,
S
Samuel Ortiz 已提交
1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
			  "HW and/or SW RF Kill no longer active, restarting "
			  "device\n");
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
		    test_bit(STATUS_ALIVE, &priv->status))
			queue_work(priv->workqueue, &priv->restart);
	} else {
		/* make sure mac80211 stop sending Tx frame */
		if (priv->mac80211_registered)
			ieee80211_stop_queues(priv->hw);

		if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
1969
			IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
S
Samuel Ortiz 已提交
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
					  "disabled by SW switch\n");
		else
			IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
				    "Kill switch must be turned off for "
				    "wireless networking to work.\n");
	}
	mutex_unlock(&priv->mutex);
	iwl_rfkill_set_hw_state(priv);
}
EXPORT_SYMBOL(iwl_bg_rf_kill);