1 /******************************************************************************
5 * Copyright(c) 2008 - 2012 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 <linux/slab.h>
34 #include <net/mac80211.h>
36 #include "iwl-eeprom.h"
37 #include "iwl-debug.h"
40 #include "iwl-power.h"
41 #include "iwl-shared.h"
43 #include "iwl-trans.h"
45 const u8 iwl_bcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
47 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
48 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
49 static void iwl_init_ht_hw_capab(const struct iwl_priv
*priv
,
50 struct ieee80211_sta_ht_cap
*ht_info
,
51 enum ieee80211_band band
)
54 u8 rx_chains_num
= hw_params(priv
).rx_chains_num
;
55 u8 tx_chains_num
= hw_params(priv
).tx_chains_num
;
58 memset(&ht_info
->mcs
, 0, sizeof(ht_info
->mcs
));
60 ht_info
->ht_supported
= true;
62 if (cfg(priv
)->ht_params
&&
63 cfg(priv
)->ht_params
->ht_greenfield_support
)
64 ht_info
->cap
|= IEEE80211_HT_CAP_GRN_FLD
;
65 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_20
;
66 max_bit_rate
= MAX_BIT_RATE_20_MHZ
;
67 if (hw_params(priv
).ht40_channel
& BIT(band
)) {
68 ht_info
->cap
|= IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
69 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_40
;
70 ht_info
->mcs
.rx_mask
[4] = 0x01;
71 max_bit_rate
= MAX_BIT_RATE_40_MHZ
;
74 if (iwlagn_mod_params
.amsdu_size_8K
)
75 ht_info
->cap
|= IEEE80211_HT_CAP_MAX_AMSDU
;
77 ht_info
->ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
78 ht_info
->ampdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
80 ht_info
->mcs
.rx_mask
[0] = 0xFF;
81 if (rx_chains_num
>= 2)
82 ht_info
->mcs
.rx_mask
[1] = 0xFF;
83 if (rx_chains_num
>= 3)
84 ht_info
->mcs
.rx_mask
[2] = 0xFF;
86 /* Highest supported Rx data rate */
87 max_bit_rate
*= rx_chains_num
;
88 WARN_ON(max_bit_rate
& ~IEEE80211_HT_MCS_RX_HIGHEST_MASK
);
89 ht_info
->mcs
.rx_highest
= cpu_to_le16(max_bit_rate
);
91 /* Tx MCS capabilities */
92 ht_info
->mcs
.tx_params
= IEEE80211_HT_MCS_TX_DEFINED
;
93 if (tx_chains_num
!= rx_chains_num
) {
94 ht_info
->mcs
.tx_params
|= IEEE80211_HT_MCS_TX_RX_DIFF
;
95 ht_info
->mcs
.tx_params
|= ((tx_chains_num
- 1) <<
96 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
);
101 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
103 int iwl_init_geos(struct iwl_priv
*priv
)
105 struct iwl_channel_info
*ch
;
106 struct ieee80211_supported_band
*sband
;
107 struct ieee80211_channel
*channels
;
108 struct ieee80211_channel
*geo_ch
;
109 struct ieee80211_rate
*rates
;
111 s8 max_tx_power
= IWLAGN_TX_POWER_TARGET_POWER_MIN
;
113 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
||
114 priv
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
) {
115 IWL_DEBUG_INFO(priv
, "Geography modes already initialized.\n");
116 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
120 channels
= kcalloc(priv
->channel_count
,
121 sizeof(struct ieee80211_channel
), GFP_KERNEL
);
125 rates
= kcalloc(IWL_RATE_COUNT_LEGACY
, sizeof(struct ieee80211_rate
),
132 /* 5.2GHz channels start after the 2.4GHz channels */
133 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
134 sband
->channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
136 sband
->bitrates
= &rates
[IWL_FIRST_OFDM_RATE
];
137 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
- IWL_FIRST_OFDM_RATE
;
139 if (hw_params(priv
).sku
& EEPROM_SKU_CAP_11N_ENABLE
)
140 iwl_init_ht_hw_capab(priv
, &sband
->ht_cap
,
141 IEEE80211_BAND_5GHZ
);
143 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
144 sband
->channels
= channels
;
146 sband
->bitrates
= rates
;
147 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
;
149 if (hw_params(priv
).sku
& EEPROM_SKU_CAP_11N_ENABLE
)
150 iwl_init_ht_hw_capab(priv
, &sband
->ht_cap
,
151 IEEE80211_BAND_2GHZ
);
153 priv
->ieee_channels
= channels
;
154 priv
->ieee_rates
= rates
;
156 for (i
= 0; i
< priv
->channel_count
; i
++) {
157 ch
= &priv
->channel_info
[i
];
159 /* FIXME: might be removed if scan is OK */
160 if (!is_channel_valid(ch
))
163 sband
= &priv
->bands
[ch
->band
];
165 geo_ch
= &sband
->channels
[sband
->n_channels
++];
167 geo_ch
->center_freq
=
168 ieee80211_channel_to_frequency(ch
->channel
, ch
->band
);
169 geo_ch
->max_power
= ch
->max_power_avg
;
170 geo_ch
->max_antenna_gain
= 0xff;
171 geo_ch
->hw_value
= ch
->channel
;
173 if (is_channel_valid(ch
)) {
174 if (!(ch
->flags
& EEPROM_CHANNEL_IBSS
))
175 geo_ch
->flags
|= IEEE80211_CHAN_NO_IBSS
;
177 if (!(ch
->flags
& EEPROM_CHANNEL_ACTIVE
))
178 geo_ch
->flags
|= IEEE80211_CHAN_PASSIVE_SCAN
;
180 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
181 geo_ch
->flags
|= IEEE80211_CHAN_RADAR
;
183 geo_ch
->flags
|= ch
->ht40_extension_channel
;
185 if (ch
->max_power_avg
> max_tx_power
)
186 max_tx_power
= ch
->max_power_avg
;
188 geo_ch
->flags
|= IEEE80211_CHAN_DISABLED
;
191 IWL_DEBUG_INFO(priv
, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
192 ch
->channel
, geo_ch
->center_freq
,
193 is_channel_a_band(ch
) ? "5.2" : "2.4",
194 geo_ch
->flags
& IEEE80211_CHAN_DISABLED
?
195 "restricted" : "valid",
199 priv
->tx_power_device_lmt
= max_tx_power
;
200 priv
->tx_power_user_lmt
= max_tx_power
;
201 priv
->tx_power_next
= max_tx_power
;
203 if ((priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
== 0) &&
204 hw_params(priv
).sku
& EEPROM_SKU_CAP_BAND_52GHZ
) {
205 IWL_INFO(priv
, "Incorrectly detected BG card as ABG. "
206 "Please send your %s to maintainer.\n",
207 trans(priv
)->hw_id_str
);
208 hw_params(priv
).sku
&= ~EEPROM_SKU_CAP_BAND_52GHZ
;
211 IWL_INFO(priv
, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
212 priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
,
213 priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
);
215 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
221 * iwl_free_geos - undo allocations in iwl_init_geos
223 void iwl_free_geos(struct iwl_priv
*priv
)
225 kfree(priv
->ieee_channels
);
226 kfree(priv
->ieee_rates
);
227 clear_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
230 static bool iwl_is_channel_extension(struct iwl_priv
*priv
,
231 enum ieee80211_band band
,
232 u16 channel
, u8 extension_chan_offset
)
234 const struct iwl_channel_info
*ch_info
;
236 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
237 if (!is_channel_valid(ch_info
))
240 if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_ABOVE
)
241 return !(ch_info
->ht40_extension_channel
&
242 IEEE80211_CHAN_NO_HT40PLUS
);
243 else if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
244 return !(ch_info
->ht40_extension_channel
&
245 IEEE80211_CHAN_NO_HT40MINUS
);
250 bool iwl_is_ht40_tx_allowed(struct iwl_priv
*priv
,
251 struct iwl_rxon_context
*ctx
,
252 struct ieee80211_sta_ht_cap
*ht_cap
)
254 if (!ctx
->ht
.enabled
|| !ctx
->ht
.is_40mhz
)
258 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
259 * the bit will not set if it is pure 40MHz case
261 if (ht_cap
&& !ht_cap
->ht_supported
)
264 #ifdef CONFIG_IWLWIFI_DEBUGFS
265 if (priv
->disable_ht40
)
269 return iwl_is_channel_extension(priv
, priv
->band
,
270 le16_to_cpu(ctx
->staging
.channel
),
271 ctx
->ht
.extension_chan_offset
);
274 static u16
iwl_adjust_beacon_interval(u16 beacon_val
, u16 max_beacon_val
)
280 * If mac80211 hasn't given us a beacon interval, program
281 * the default into the device (not checking this here
282 * would cause the adjustment below to return the maximum
283 * value, which may break PAN.)
286 return DEFAULT_BEACON_INTERVAL
;
289 * If the beacon interval we obtained from the peer
290 * is too large, we'll have to wake up more often
291 * (and in IBSS case, we'll beacon too much)
293 * For example, if max_beacon_val is 4096, and the
294 * requested beacon interval is 7000, we'll have to
295 * use 3500 to be able to wake up on the beacons.
297 * This could badly influence beacon detection stats.
300 beacon_factor
= (beacon_val
+ max_beacon_val
) / max_beacon_val
;
301 new_val
= beacon_val
/ beacon_factor
;
304 new_val
= max_beacon_val
;
309 int iwl_send_rxon_timing(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
312 s32 interval_tm
, rem
;
313 struct ieee80211_conf
*conf
= NULL
;
315 struct ieee80211_vif
*vif
= ctx
->vif
;
317 conf
= &priv
->hw
->conf
;
319 lockdep_assert_held(&priv
->mutex
);
321 memset(&ctx
->timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
323 ctx
->timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
324 ctx
->timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
326 beacon_int
= vif
? vif
->bss_conf
.beacon_int
: 0;
329 * TODO: For IBSS we need to get atim_window from mac80211,
330 * for now just always use 0
332 ctx
->timing
.atim_window
= 0;
334 if (ctx
->ctxid
== IWL_RXON_CTX_PAN
&&
335 (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
) &&
336 iwl_is_associated(priv
, IWL_RXON_CTX_BSS
) &&
337 priv
->contexts
[IWL_RXON_CTX_BSS
].vif
&&
338 priv
->contexts
[IWL_RXON_CTX_BSS
].vif
->bss_conf
.beacon_int
) {
339 ctx
->timing
.beacon_interval
=
340 priv
->contexts
[IWL_RXON_CTX_BSS
].timing
.beacon_interval
;
341 beacon_int
= le16_to_cpu(ctx
->timing
.beacon_interval
);
342 } else if (ctx
->ctxid
== IWL_RXON_CTX_BSS
&&
343 iwl_is_associated(priv
, IWL_RXON_CTX_PAN
) &&
344 priv
->contexts
[IWL_RXON_CTX_PAN
].vif
&&
345 priv
->contexts
[IWL_RXON_CTX_PAN
].vif
->bss_conf
.beacon_int
&&
346 (!iwl_is_associated_ctx(ctx
) || !ctx
->vif
||
347 !ctx
->vif
->bss_conf
.beacon_int
)) {
348 ctx
->timing
.beacon_interval
=
349 priv
->contexts
[IWL_RXON_CTX_PAN
].timing
.beacon_interval
;
350 beacon_int
= le16_to_cpu(ctx
->timing
.beacon_interval
);
352 beacon_int
= iwl_adjust_beacon_interval(beacon_int
,
353 IWL_MAX_UCODE_BEACON_INTERVAL
* TIME_UNIT
);
354 ctx
->timing
.beacon_interval
= cpu_to_le16(beacon_int
);
357 ctx
->beacon_int
= beacon_int
;
359 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
360 interval_tm
= beacon_int
* TIME_UNIT
;
361 rem
= do_div(tsf
, interval_tm
);
362 ctx
->timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
364 ctx
->timing
.dtim_period
= vif
? (vif
->bss_conf
.dtim_period
?: 1) : 1;
366 IWL_DEBUG_ASSOC(priv
,
367 "beacon interval %d beacon timer %d beacon tim %d\n",
368 le16_to_cpu(ctx
->timing
.beacon_interval
),
369 le32_to_cpu(ctx
->timing
.beacon_init_val
),
370 le16_to_cpu(ctx
->timing
.atim_window
));
372 return iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_timing_cmd
,
373 CMD_SYNC
, sizeof(ctx
->timing
), &ctx
->timing
);
376 void iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
379 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
382 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
384 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
388 /* validate RXON structure is valid */
389 int iwl_check_rxon_cmd(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
391 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
394 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
395 if (rxon
->flags
& RXON_FLG_TGJ_NARROW_BAND_MSK
) {
396 IWL_WARN(priv
, "check 2.4G: wrong narrow\n");
399 if (rxon
->flags
& RXON_FLG_RADAR_DETECT_MSK
) {
400 IWL_WARN(priv
, "check 2.4G: wrong radar\n");
404 if (!(rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
405 IWL_WARN(priv
, "check 5.2G: not short slot!\n");
408 if (rxon
->flags
& RXON_FLG_CCK_MSK
) {
409 IWL_WARN(priv
, "check 5.2G: CCK!\n");
413 if ((rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1) {
414 IWL_WARN(priv
, "mac/bssid mcast!\n");
418 /* make sure basic rates 6Mbps and 1Mbps are supported */
419 if ((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0 &&
420 (rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0) {
421 IWL_WARN(priv
, "neither 1 nor 6 are basic\n");
425 if (le16_to_cpu(rxon
->assoc_id
) > 2007) {
426 IWL_WARN(priv
, "aid > 2007\n");
430 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
431 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
)) {
432 IWL_WARN(priv
, "CCK and short slot\n");
436 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
437 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
)) {
438 IWL_WARN(priv
, "CCK and auto detect");
442 if ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
443 RXON_FLG_TGG_PROTECT_MSK
)) ==
444 RXON_FLG_TGG_PROTECT_MSK
) {
445 IWL_WARN(priv
, "TGg but no auto-detect\n");
449 if (rxon
->channel
== 0) {
450 IWL_WARN(priv
, "zero channel is invalid\n");
454 WARN(errors
, "Invalid RXON (%#x), channel %d",
455 errors
, le16_to_cpu(rxon
->channel
));
457 return errors
? -EINVAL
: 0;
461 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
462 * @priv: staging_rxon is compared to active_rxon
464 * If the RXON structure is changing enough to require a new tune,
465 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
466 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
468 int iwl_full_rxon_required(struct iwl_priv
*priv
,
469 struct iwl_rxon_context
*ctx
)
471 const struct iwl_rxon_cmd
*staging
= &ctx
->staging
;
472 const struct iwl_rxon_cmd
*active
= &ctx
->active
;
476 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
480 #define CHK_NEQ(c1, c2) \
481 if ((c1) != (c2)) { \
482 IWL_DEBUG_INFO(priv, "need full RXON - " \
483 #c1 " != " #c2 " - %d != %d\n", \
488 /* These items are only settable from the full RXON command */
489 CHK(!iwl_is_associated_ctx(ctx
));
490 CHK(compare_ether_addr(staging
->bssid_addr
, active
->bssid_addr
));
491 CHK(compare_ether_addr(staging
->node_addr
, active
->node_addr
));
492 CHK(compare_ether_addr(staging
->wlap_bssid_addr
,
493 active
->wlap_bssid_addr
));
494 CHK_NEQ(staging
->dev_type
, active
->dev_type
);
495 CHK_NEQ(staging
->channel
, active
->channel
);
496 CHK_NEQ(staging
->air_propagation
, active
->air_propagation
);
497 CHK_NEQ(staging
->ofdm_ht_single_stream_basic_rates
,
498 active
->ofdm_ht_single_stream_basic_rates
);
499 CHK_NEQ(staging
->ofdm_ht_dual_stream_basic_rates
,
500 active
->ofdm_ht_dual_stream_basic_rates
);
501 CHK_NEQ(staging
->ofdm_ht_triple_stream_basic_rates
,
502 active
->ofdm_ht_triple_stream_basic_rates
);
503 CHK_NEQ(staging
->assoc_id
, active
->assoc_id
);
505 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
506 * be updated with the RXON_ASSOC command -- however only some
507 * flag transitions are allowed using RXON_ASSOC */
509 /* Check if we are not switching bands */
510 CHK_NEQ(staging
->flags
& RXON_FLG_BAND_24G_MSK
,
511 active
->flags
& RXON_FLG_BAND_24G_MSK
);
513 /* Check if we are switching association toggle */
514 CHK_NEQ(staging
->filter_flags
& RXON_FILTER_ASSOC_MSK
,
515 active
->filter_flags
& RXON_FILTER_ASSOC_MSK
);
523 static void _iwl_set_rxon_ht(struct iwl_priv
*priv
,
524 struct iwl_ht_config
*ht_conf
,
525 struct iwl_rxon_context
*ctx
)
527 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
529 if (!ctx
->ht
.enabled
) {
530 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
531 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
|
532 RXON_FLG_HT40_PROT_MSK
|
533 RXON_FLG_HT_PROT_MSK
);
537 /* FIXME: if the definition of ht.protection changed, the "translation"
538 * will be needed for rxon->flags
540 rxon
->flags
|= cpu_to_le32(ctx
->ht
.protection
<< RXON_FLG_HT_OPERATING_MODE_POS
);
542 /* Set up channel bandwidth:
543 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
544 /* clear the HT channel mode before set the mode */
545 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
546 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
547 if (iwl_is_ht40_tx_allowed(priv
, ctx
, NULL
)) {
549 if (ctx
->ht
.protection
== IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
) {
550 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_PURE_40
;
551 /* Note: control channel is opposite of extension channel */
552 switch (ctx
->ht
.extension_chan_offset
) {
553 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
554 rxon
->flags
&= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
556 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
557 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
561 /* Note: control channel is opposite of extension channel */
562 switch (ctx
->ht
.extension_chan_offset
) {
563 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
564 rxon
->flags
&= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
565 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
567 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
568 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
569 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
571 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
573 /* channel location only valid if in Mixed mode */
574 IWL_ERR(priv
, "invalid extension channel offset\n");
579 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_LEGACY
;
582 iwlagn_set_rxon_chain(priv
, ctx
);
584 IWL_DEBUG_ASSOC(priv
, "rxon flags 0x%X operation mode :0x%X "
585 "extension channel offset 0x%x\n",
586 le32_to_cpu(rxon
->flags
), ctx
->ht
.protection
,
587 ctx
->ht
.extension_chan_offset
);
590 void iwl_set_rxon_ht(struct iwl_priv
*priv
, struct iwl_ht_config
*ht_conf
)
592 struct iwl_rxon_context
*ctx
;
594 for_each_context(priv
, ctx
)
595 _iwl_set_rxon_ht(priv
, ht_conf
, ctx
);
598 /* Return valid, unused, channel for a passive scan to reset the RF */
599 u8
iwl_get_single_channel_number(struct iwl_priv
*priv
,
600 enum ieee80211_band band
)
602 const struct iwl_channel_info
*ch_info
;
606 struct iwl_rxon_context
*ctx
;
608 if (band
== IEEE80211_BAND_5GHZ
) {
610 max
= priv
->channel_count
;
616 for (i
= min
; i
< max
; i
++) {
619 for_each_context(priv
, ctx
) {
620 busy
= priv
->channel_info
[i
].channel
==
621 le16_to_cpu(ctx
->staging
.channel
);
629 channel
= priv
->channel_info
[i
].channel
;
630 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
631 if (is_channel_valid(ch_info
))
639 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
640 * @ch: requested channel as a pointer to struct ieee80211_channel
642 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
643 * in the staging RXON flag structure based on the ch->band
645 void iwl_set_rxon_channel(struct iwl_priv
*priv
, struct ieee80211_channel
*ch
,
646 struct iwl_rxon_context
*ctx
)
648 enum ieee80211_band band
= ch
->band
;
649 u16 channel
= ch
->hw_value
;
651 if ((le16_to_cpu(ctx
->staging
.channel
) == channel
) &&
652 (priv
->band
== band
))
655 ctx
->staging
.channel
= cpu_to_le16(channel
);
656 if (band
== IEEE80211_BAND_5GHZ
)
657 ctx
->staging
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
659 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
663 IWL_DEBUG_INFO(priv
, "Staging channel set to %d [%d]\n", channel
, band
);
667 void iwl_set_flags_for_band(struct iwl_priv
*priv
,
668 struct iwl_rxon_context
*ctx
,
669 enum ieee80211_band band
,
670 struct ieee80211_vif
*vif
)
672 if (band
== IEEE80211_BAND_5GHZ
) {
673 ctx
->staging
.flags
&=
674 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
676 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
678 /* Copied from iwl_post_associate() */
679 if (vif
&& vif
->bss_conf
.use_short_slot
)
680 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
682 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
684 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
685 ctx
->staging
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
686 ctx
->staging
.flags
&= ~RXON_FLG_CCK_MSK
;
691 * initialize rxon structure with default values from eeprom
693 void iwl_connection_init_rx_config(struct iwl_priv
*priv
,
694 struct iwl_rxon_context
*ctx
)
696 const struct iwl_channel_info
*ch_info
;
698 memset(&ctx
->staging
, 0, sizeof(ctx
->staging
));
701 ctx
->staging
.dev_type
= ctx
->unused_devtype
;
702 } else switch (ctx
->vif
->type
) {
703 case NL80211_IFTYPE_AP
:
704 ctx
->staging
.dev_type
= ctx
->ap_devtype
;
707 case NL80211_IFTYPE_STATION
:
708 ctx
->staging
.dev_type
= ctx
->station_devtype
;
709 ctx
->staging
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
712 case NL80211_IFTYPE_ADHOC
:
713 ctx
->staging
.dev_type
= ctx
->ibss_devtype
;
714 ctx
->staging
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
715 ctx
->staging
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
716 RXON_FILTER_ACCEPT_GRP_MSK
;
720 IWL_ERR(priv
, "Unsupported interface type %d\n",
726 /* TODO: Figure out when short_preamble would be set and cache from
728 if (!hw_to_local(priv
->hw
)->short_preamble
)
729 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
731 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
734 ch_info
= iwl_get_channel_info(priv
, priv
->band
,
735 le16_to_cpu(ctx
->active
.channel
));
738 ch_info
= &priv
->channel_info
[0];
740 ctx
->staging
.channel
= cpu_to_le16(ch_info
->channel
);
741 priv
->band
= ch_info
->band
;
743 iwl_set_flags_for_band(priv
, ctx
, priv
->band
, ctx
->vif
);
745 ctx
->staging
.ofdm_basic_rates
=
746 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
747 ctx
->staging
.cck_basic_rates
=
748 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
750 /* clear both MIX and PURE40 mode flag */
751 ctx
->staging
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED
|
752 RXON_FLG_CHANNEL_MODE_PURE_40
);
754 memcpy(ctx
->staging
.node_addr
, ctx
->vif
->addr
, ETH_ALEN
);
756 ctx
->staging
.ofdm_ht_single_stream_basic_rates
= 0xff;
757 ctx
->staging
.ofdm_ht_dual_stream_basic_rates
= 0xff;
758 ctx
->staging
.ofdm_ht_triple_stream_basic_rates
= 0xff;
761 void iwl_set_rate(struct iwl_priv
*priv
)
763 const struct ieee80211_supported_band
*hw
= NULL
;
764 struct ieee80211_rate
*rate
;
765 struct iwl_rxon_context
*ctx
;
768 hw
= iwl_get_hw_mode(priv
, priv
->band
);
770 IWL_ERR(priv
, "Failed to set rate: unable to get hw mode\n");
774 priv
->active_rate
= 0;
776 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
777 rate
= &(hw
->bitrates
[i
]);
778 if (rate
->hw_value
< IWL_RATE_COUNT_LEGACY
)
779 priv
->active_rate
|= (1 << rate
->hw_value
);
782 IWL_DEBUG_RATE(priv
, "Set active_rate = %0x\n", priv
->active_rate
);
784 for_each_context(priv
, ctx
) {
785 ctx
->staging
.cck_basic_rates
=
786 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
788 ctx
->staging
.ofdm_basic_rates
=
789 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
793 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
797 * See iwlagn_mac_channel_switch.
799 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
801 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
804 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
805 ieee80211_chswitch_done(ctx
->vif
, is_success
);
808 #ifdef CONFIG_IWLWIFI_DEBUG
809 void iwl_print_rx_config_cmd(struct iwl_priv
*priv
,
810 enum iwl_rxon_context_id ctxid
)
812 struct iwl_rxon_context
*ctx
= &priv
->contexts
[ctxid
];
813 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
815 IWL_DEBUG_RADIO(priv
, "RX CONFIG:\n");
816 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
817 IWL_DEBUG_RADIO(priv
, "u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
818 IWL_DEBUG_RADIO(priv
, "u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
819 IWL_DEBUG_RADIO(priv
, "u32 filter_flags: 0x%08x\n",
820 le32_to_cpu(rxon
->filter_flags
));
821 IWL_DEBUG_RADIO(priv
, "u8 dev_type: 0x%x\n", rxon
->dev_type
);
822 IWL_DEBUG_RADIO(priv
, "u8 ofdm_basic_rates: 0x%02x\n",
823 rxon
->ofdm_basic_rates
);
824 IWL_DEBUG_RADIO(priv
, "u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
825 IWL_DEBUG_RADIO(priv
, "u8[6] node_addr: %pM\n", rxon
->node_addr
);
826 IWL_DEBUG_RADIO(priv
, "u8[6] bssid_addr: %pM\n", rxon
->bssid_addr
);
827 IWL_DEBUG_RADIO(priv
, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
831 static void iwlagn_fw_error(struct iwl_priv
*priv
, bool ondemand
)
833 unsigned int reload_msec
;
834 unsigned long reload_jiffies
;
836 #ifdef CONFIG_IWLWIFI_DEBUG
837 if (iwl_have_debug_level(IWL_DL_FW_ERRORS
))
838 iwl_print_rx_config_cmd(priv
, IWL_RXON_CTX_BSS
);
841 /* uCode is no longer loaded. */
842 priv
->ucode_loaded
= false;
844 /* Set the FW error flag -- cleared on iwl_down */
845 set_bit(STATUS_FW_ERROR
, &priv
->shrd
->status
);
847 /* Cancel currently queued command. */
848 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->shrd
->status
);
850 iwl_abort_notification_waits(&priv
->notif_wait
);
852 /* Keep the restart process from trying to send host
853 * commands by clearing the ready bit */
854 clear_bit(STATUS_READY
, &priv
->status
);
856 wake_up(&trans(priv
)->wait_command_queue
);
860 * If firmware keep reloading, then it indicate something
861 * serious wrong and firmware having problem to recover
862 * from it. Instead of keep trying which will fill the syslog
863 * and hang the system, let's just stop it
865 reload_jiffies
= jiffies
;
866 reload_msec
= jiffies_to_msecs((long) reload_jiffies
-
867 (long) priv
->reload_jiffies
);
868 priv
->reload_jiffies
= reload_jiffies
;
869 if (reload_msec
<= IWL_MIN_RELOAD_DURATION
) {
870 priv
->reload_count
++;
871 if (priv
->reload_count
>= IWL_MAX_CONTINUE_RELOAD_CNT
) {
872 IWL_ERR(priv
, "BUG_ON, Stop restarting\n");
876 priv
->reload_count
= 0;
879 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
880 if (iwlagn_mod_params
.restart_fw
) {
881 IWL_DEBUG_FW_ERRORS(priv
,
882 "Restarting adapter due to uCode error.\n");
883 queue_work(priv
->workqueue
, &priv
->restart
);
885 IWL_DEBUG_FW_ERRORS(priv
,
886 "Detected FW error, but not restarting\n");
890 int iwl_set_tx_power(struct iwl_priv
*priv
, s8 tx_power
, bool force
)
895 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
897 lockdep_assert_held(&priv
->mutex
);
899 if (priv
->tx_power_user_lmt
== tx_power
&& !force
)
902 if (tx_power
< IWLAGN_TX_POWER_TARGET_POWER_MIN
) {
904 "Requested user TXPOWER %d below lower limit %d.\n",
906 IWLAGN_TX_POWER_TARGET_POWER_MIN
);
910 if (tx_power
> priv
->tx_power_device_lmt
) {
912 "Requested user TXPOWER %d above upper limit %d.\n",
913 tx_power
, priv
->tx_power_device_lmt
);
917 if (!iwl_is_ready_rf(priv
))
920 /* scan complete and commit_rxon use tx_power_next value,
921 * it always need to be updated for newest request */
922 priv
->tx_power_next
= tx_power
;
924 /* do not set tx power when scanning or channel changing */
925 defer
= test_bit(STATUS_SCANNING
, &priv
->status
) ||
926 memcmp(&ctx
->active
, &ctx
->staging
, sizeof(ctx
->staging
));
927 if (defer
&& !force
) {
928 IWL_DEBUG_INFO(priv
, "Deferring tx power set\n");
932 prev_tx_power
= priv
->tx_power_user_lmt
;
933 priv
->tx_power_user_lmt
= tx_power
;
935 ret
= iwlagn_send_tx_power(priv
);
937 /* if fail to set tx_power, restore the orig. tx power */
939 priv
->tx_power_user_lmt
= prev_tx_power
;
940 priv
->tx_power_next
= prev_tx_power
;
945 void iwl_send_bt_config(struct iwl_priv
*priv
)
947 struct iwl_bt_cmd bt_cmd
= {
948 .lead_time
= BT_LEAD_TIME_DEF
,
949 .max_kill
= BT_MAX_KILL_DEF
,
954 if (!iwlagn_mod_params
.bt_coex_active
)
955 bt_cmd
.flags
= BT_COEX_DISABLE
;
957 bt_cmd
.flags
= BT_COEX_ENABLE
;
959 priv
->bt_enable_flag
= bt_cmd
.flags
;
960 IWL_DEBUG_INFO(priv
, "BT coex %s\n",
961 (bt_cmd
.flags
== BT_COEX_DISABLE
) ? "disable" : "active");
963 if (iwl_dvm_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
964 CMD_SYNC
, sizeof(struct iwl_bt_cmd
), &bt_cmd
))
965 IWL_ERR(priv
, "failed to send BT Coex Config\n");
968 int iwl_send_statistics_request(struct iwl_priv
*priv
, u8 flags
, bool clear
)
970 struct iwl_statistics_cmd statistics_cmd
= {
971 .configuration_flags
=
972 clear
? IWL_STATS_CONF_CLEAR_STATS
: 0,
975 if (flags
& CMD_ASYNC
)
976 return iwl_dvm_send_cmd_pdu(priv
, REPLY_STATISTICS_CMD
,
978 sizeof(struct iwl_statistics_cmd
),
981 return iwl_dvm_send_cmd_pdu(priv
, REPLY_STATISTICS_CMD
,
983 sizeof(struct iwl_statistics_cmd
),
990 #ifdef CONFIG_IWLWIFI_DEBUGFS
992 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
994 void iwl_reset_traffic_log(struct iwl_priv
*priv
)
996 priv
->tx_traffic_idx
= 0;
997 priv
->rx_traffic_idx
= 0;
998 if (priv
->tx_traffic
)
999 memset(priv
->tx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
1000 if (priv
->rx_traffic
)
1001 memset(priv
->rx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
1004 int iwl_alloc_traffic_mem(struct iwl_priv
*priv
)
1006 u32 traffic_size
= IWL_TRAFFIC_DUMP_SIZE
;
1008 if (iwl_have_debug_level(IWL_DL_TX
)) {
1009 if (!priv
->tx_traffic
) {
1011 kzalloc(traffic_size
, GFP_KERNEL
);
1012 if (!priv
->tx_traffic
)
1016 if (iwl_have_debug_level(IWL_DL_RX
)) {
1017 if (!priv
->rx_traffic
) {
1019 kzalloc(traffic_size
, GFP_KERNEL
);
1020 if (!priv
->rx_traffic
)
1024 iwl_reset_traffic_log(priv
);
1028 void iwl_free_traffic_mem(struct iwl_priv
*priv
)
1030 kfree(priv
->tx_traffic
);
1031 priv
->tx_traffic
= NULL
;
1033 kfree(priv
->rx_traffic
);
1034 priv
->rx_traffic
= NULL
;
1037 void iwl_dbg_log_tx_data_frame(struct iwl_priv
*priv
,
1038 u16 length
, struct ieee80211_hdr
*header
)
1043 if (likely(!iwl_have_debug_level(IWL_DL_TX
)))
1046 if (!priv
->tx_traffic
)
1049 fc
= header
->frame_control
;
1050 if (ieee80211_is_data(fc
)) {
1051 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
1052 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
1053 memcpy((priv
->tx_traffic
+
1054 (priv
->tx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
1056 priv
->tx_traffic_idx
=
1057 (priv
->tx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
1061 void iwl_dbg_log_rx_data_frame(struct iwl_priv
*priv
,
1062 u16 length
, struct ieee80211_hdr
*header
)
1067 if (likely(!iwl_have_debug_level(IWL_DL_RX
)))
1070 if (!priv
->rx_traffic
)
1073 fc
= header
->frame_control
;
1074 if (ieee80211_is_data(fc
)) {
1075 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
1076 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
1077 memcpy((priv
->rx_traffic
+
1078 (priv
->rx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
1080 priv
->rx_traffic_idx
=
1081 (priv
->rx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
1085 const char *get_mgmt_string(int cmd
)
1088 IWL_CMD(MANAGEMENT_ASSOC_REQ
);
1089 IWL_CMD(MANAGEMENT_ASSOC_RESP
);
1090 IWL_CMD(MANAGEMENT_REASSOC_REQ
);
1091 IWL_CMD(MANAGEMENT_REASSOC_RESP
);
1092 IWL_CMD(MANAGEMENT_PROBE_REQ
);
1093 IWL_CMD(MANAGEMENT_PROBE_RESP
);
1094 IWL_CMD(MANAGEMENT_BEACON
);
1095 IWL_CMD(MANAGEMENT_ATIM
);
1096 IWL_CMD(MANAGEMENT_DISASSOC
);
1097 IWL_CMD(MANAGEMENT_AUTH
);
1098 IWL_CMD(MANAGEMENT_DEAUTH
);
1099 IWL_CMD(MANAGEMENT_ACTION
);
1106 const char *get_ctrl_string(int cmd
)
1109 IWL_CMD(CONTROL_BACK_REQ
);
1110 IWL_CMD(CONTROL_BACK
);
1111 IWL_CMD(CONTROL_PSPOLL
);
1112 IWL_CMD(CONTROL_RTS
);
1113 IWL_CMD(CONTROL_CTS
);
1114 IWL_CMD(CONTROL_ACK
);
1115 IWL_CMD(CONTROL_CFEND
);
1116 IWL_CMD(CONTROL_CFENDACK
);
1123 void iwl_clear_traffic_stats(struct iwl_priv
*priv
)
1125 memset(&priv
->tx_stats
, 0, sizeof(struct traffic_stats
));
1126 memset(&priv
->rx_stats
, 0, sizeof(struct traffic_stats
));
1130 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
1131 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
1132 * Use debugFs to display the rx/rx_statistics
1133 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
1134 * information will be recorded, but DATA pkt still will be recorded
1135 * for the reason of iwl_led.c need to control the led blinking based on
1136 * number of tx and rx data.
1139 void iwl_update_stats(struct iwl_priv
*priv
, bool is_tx
, __le16 fc
, u16 len
)
1141 struct traffic_stats
*stats
;
1144 stats
= &priv
->tx_stats
;
1146 stats
= &priv
->rx_stats
;
1148 if (ieee80211_is_mgmt(fc
)) {
1149 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
1150 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
1151 stats
->mgmt
[MANAGEMENT_ASSOC_REQ
]++;
1153 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP
):
1154 stats
->mgmt
[MANAGEMENT_ASSOC_RESP
]++;
1156 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
1157 stats
->mgmt
[MANAGEMENT_REASSOC_REQ
]++;
1159 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP
):
1160 stats
->mgmt
[MANAGEMENT_REASSOC_RESP
]++;
1162 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
):
1163 stats
->mgmt
[MANAGEMENT_PROBE_REQ
]++;
1165 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP
):
1166 stats
->mgmt
[MANAGEMENT_PROBE_RESP
]++;
1168 case cpu_to_le16(IEEE80211_STYPE_BEACON
):
1169 stats
->mgmt
[MANAGEMENT_BEACON
]++;
1171 case cpu_to_le16(IEEE80211_STYPE_ATIM
):
1172 stats
->mgmt
[MANAGEMENT_ATIM
]++;
1174 case cpu_to_le16(IEEE80211_STYPE_DISASSOC
):
1175 stats
->mgmt
[MANAGEMENT_DISASSOC
]++;
1177 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
1178 stats
->mgmt
[MANAGEMENT_AUTH
]++;
1180 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
1181 stats
->mgmt
[MANAGEMENT_DEAUTH
]++;
1183 case cpu_to_le16(IEEE80211_STYPE_ACTION
):
1184 stats
->mgmt
[MANAGEMENT_ACTION
]++;
1187 } else if (ieee80211_is_ctl(fc
)) {
1188 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
1189 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ
):
1190 stats
->ctrl
[CONTROL_BACK_REQ
]++;
1192 case cpu_to_le16(IEEE80211_STYPE_BACK
):
1193 stats
->ctrl
[CONTROL_BACK
]++;
1195 case cpu_to_le16(IEEE80211_STYPE_PSPOLL
):
1196 stats
->ctrl
[CONTROL_PSPOLL
]++;
1198 case cpu_to_le16(IEEE80211_STYPE_RTS
):
1199 stats
->ctrl
[CONTROL_RTS
]++;
1201 case cpu_to_le16(IEEE80211_STYPE_CTS
):
1202 stats
->ctrl
[CONTROL_CTS
]++;
1204 case cpu_to_le16(IEEE80211_STYPE_ACK
):
1205 stats
->ctrl
[CONTROL_ACK
]++;
1207 case cpu_to_le16(IEEE80211_STYPE_CFEND
):
1208 stats
->ctrl
[CONTROL_CFEND
]++;
1210 case cpu_to_le16(IEEE80211_STYPE_CFENDACK
):
1211 stats
->ctrl
[CONTROL_CFENDACK
]++;
1217 stats
->data_bytes
+= len
;
1222 static void iwl_force_rf_reset(struct iwl_priv
*priv
)
1224 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1227 if (!iwl_is_any_associated(priv
)) {
1228 IWL_DEBUG_SCAN(priv
, "force reset rejected: not associated\n");
1232 * There is no easy and better way to force reset the radio,
1233 * the only known method is switching channel which will force to
1234 * reset and tune the radio.
1235 * Use internal short scan (single channel) operation to should
1236 * achieve this objective.
1237 * Driver should reset the radio when number of consecutive missed
1238 * beacon, or any other uCode error condition detected.
1240 IWL_DEBUG_INFO(priv
, "perform radio reset.\n");
1241 iwl_internal_short_hw_scan(priv
);
1245 int iwl_force_reset(struct iwl_priv
*priv
, int mode
, bool external
)
1247 struct iwl_force_reset
*force_reset
;
1249 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1252 if (mode
>= IWL_MAX_FORCE_RESET
) {
1253 IWL_DEBUG_INFO(priv
, "invalid reset request.\n");
1256 force_reset
= &priv
->force_reset
[mode
];
1257 force_reset
->reset_request_count
++;
1259 if (force_reset
->last_force_reset_jiffies
&&
1260 time_after(force_reset
->last_force_reset_jiffies
+
1261 force_reset
->reset_duration
, jiffies
)) {
1262 IWL_DEBUG_INFO(priv
, "force reset rejected\n");
1263 force_reset
->reset_reject_count
++;
1267 force_reset
->reset_success_count
++;
1268 force_reset
->last_force_reset_jiffies
= jiffies
;
1269 IWL_DEBUG_INFO(priv
, "perform force reset (%d)\n", mode
);
1272 iwl_force_rf_reset(priv
);
1276 * if the request is from external(ex: debugfs),
1277 * then always perform the request in regardless the module
1279 * if the request is from internal (uCode error or driver
1280 * detect failure), then fw_restart module parameter
1281 * need to be check before performing firmware reload
1283 if (!external
&& !iwlagn_mod_params
.restart_fw
) {
1284 IWL_DEBUG_INFO(priv
, "Cancel firmware reload based on "
1285 "module parameter setting\n");
1288 IWL_ERR(priv
, "On demand firmware reload\n");
1289 iwlagn_fw_error(priv
, true);
1296 int iwl_cmd_echo_test(struct iwl_priv
*priv
)
1299 struct iwl_host_cmd cmd
= {
1305 ret
= iwl_dvm_send_cmd(priv
, &cmd
);
1307 IWL_ERR(priv
, "echo testing fail: 0X%x\n", ret
);
1309 IWL_DEBUG_INFO(priv
, "echo testing pass\n");
1313 static inline int iwl_check_stuck_queue(struct iwl_priv
*priv
, int txq
)
1315 if (iwl_trans_check_stuck_queue(trans(priv
), txq
)) {
1317 ret
= iwl_force_reset(priv
, IWL_FW_RESET
, false);
1318 return (ret
== -EAGAIN
) ? 0 : 1;
1324 * Making watchdog tick be a quarter of timeout assure we will
1325 * discover the queue hung between timeout and 1.25*timeout
1327 #define IWL_WD_TICK(timeout) ((timeout) / 4)
1330 * Watchdog timer callback, we check each tx queue for stuck, if if hung
1331 * we reset the firmware. If everything is fine just rearm the timer.
1333 void iwl_bg_watchdog(unsigned long data
)
1335 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
1337 unsigned long timeout
;
1339 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1342 if (iwl_is_rfkill(priv
))
1345 timeout
= hw_params(priv
).wd_timeout
;
1349 /* monitor and check for stuck queues */
1350 for (cnt
= 0; cnt
< cfg(priv
)->base_params
->num_of_queues
; cnt
++)
1351 if (iwl_check_stuck_queue(priv
, cnt
))
1354 mod_timer(&priv
->watchdog
, jiffies
+
1355 msecs_to_jiffies(IWL_WD_TICK(timeout
)));
1358 void iwl_setup_watchdog(struct iwl_priv
*priv
)
1360 unsigned int timeout
= hw_params(priv
).wd_timeout
;
1362 if (!iwlagn_mod_params
.wd_disable
) {
1363 /* use system default */
1364 if (timeout
&& !cfg(priv
)->base_params
->wd_disable
)
1365 mod_timer(&priv
->watchdog
,
1367 msecs_to_jiffies(IWL_WD_TICK(timeout
)));
1369 del_timer(&priv
->watchdog
);
1371 /* module parameter overwrite default configuration */
1372 if (timeout
&& iwlagn_mod_params
.wd_disable
== 2)
1373 mod_timer(&priv
->watchdog
,
1375 msecs_to_jiffies(IWL_WD_TICK(timeout
)));
1377 del_timer(&priv
->watchdog
);
1382 * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
1383 * @priv -- pointer to iwl_priv data structure
1384 * @tsf_bits -- number of bits need to shift for masking)
1386 static inline u32
iwl_beacon_time_mask_low(struct iwl_priv
*priv
,
1389 return (1 << tsf_bits
) - 1;
1393 * iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
1394 * @priv -- pointer to iwl_priv data structure
1395 * @tsf_bits -- number of bits need to shift for masking)
1397 static inline u32
iwl_beacon_time_mask_high(struct iwl_priv
*priv
,
1400 return ((1 << (32 - tsf_bits
)) - 1) << tsf_bits
;
1404 * extended beacon time format
1405 * time in usec will be changed into a 32-bit value in extended:internal format
1406 * the extended part is the beacon counts
1407 * the internal part is the time in usec within one beacon interval
1409 u32
iwl_usecs_to_beacons(struct iwl_priv
*priv
, u32 usec
, u32 beacon_interval
)
1413 u32 interval
= beacon_interval
* TIME_UNIT
;
1415 if (!interval
|| !usec
)
1418 quot
= (usec
/ interval
) &
1419 (iwl_beacon_time_mask_high(priv
, IWLAGN_EXT_BEACON_TIME_POS
) >>
1420 IWLAGN_EXT_BEACON_TIME_POS
);
1421 rem
= (usec
% interval
) & iwl_beacon_time_mask_low(priv
,
1422 IWLAGN_EXT_BEACON_TIME_POS
);
1424 return (quot
<< IWLAGN_EXT_BEACON_TIME_POS
) + rem
;
1427 /* base is usually what we get from ucode with each received frame,
1428 * the same as HW timer counter counting down
1430 __le32
iwl_add_beacon_time(struct iwl_priv
*priv
, u32 base
,
1431 u32 addon
, u32 beacon_interval
)
1433 u32 base_low
= base
& iwl_beacon_time_mask_low(priv
,
1434 IWLAGN_EXT_BEACON_TIME_POS
);
1435 u32 addon_low
= addon
& iwl_beacon_time_mask_low(priv
,
1436 IWLAGN_EXT_BEACON_TIME_POS
);
1437 u32 interval
= beacon_interval
* TIME_UNIT
;
1438 u32 res
= (base
& iwl_beacon_time_mask_high(priv
,
1439 IWLAGN_EXT_BEACON_TIME_POS
)) +
1440 (addon
& iwl_beacon_time_mask_high(priv
,
1441 IWLAGN_EXT_BEACON_TIME_POS
));
1443 if (base_low
> addon_low
)
1444 res
+= base_low
- addon_low
;
1445 else if (base_low
< addon_low
) {
1446 res
+= interval
+ base_low
- addon_low
;
1447 res
+= (1 << IWLAGN_EXT_BEACON_TIME_POS
);
1449 res
+= (1 << IWLAGN_EXT_BEACON_TIME_POS
);
1451 return cpu_to_le32(res
);
1454 void iwl_nic_error(struct iwl_op_mode
*op_mode
)
1456 struct iwl_priv
*priv
= IWL_OP_MODE_GET_DVM(op_mode
);
1458 iwlagn_fw_error(priv
, false);
1461 void iwl_set_hw_rfkill_state(struct iwl_op_mode
*op_mode
, bool state
)
1463 struct iwl_priv
*priv
= IWL_OP_MODE_GET_DVM(op_mode
);
1466 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1468 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1470 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, state
);
1473 void iwl_free_skb(struct iwl_op_mode
*op_mode
, struct sk_buff
*skb
)
1475 struct ieee80211_tx_info
*info
;
1477 info
= IEEE80211_SKB_CB(skb
);
1478 kmem_cache_free(iwl_tx_cmd_pool
, (info
->driver_data
[1]));
1479 dev_kfree_skb_any(skb
);