1 /******************************************************************************
5 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/etherdevice.h>
32 #include <linux/sched.h>
33 #include <linux/slab.h>
34 #include <net/mac80211.h>
36 #include "iwl-eeprom.h"
37 #include "iwl-dev.h" /* FIXME: remove */
38 #include "iwl-debug.h"
41 #include "iwl-power.h"
43 #include "iwl-helpers.h"
46 MODULE_DESCRIPTION("iwl core");
47 MODULE_VERSION(IWLWIFI_VERSION
);
48 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
49 MODULE_LICENSE("GPL");
52 * set bt_coex_active to true, uCode will do kill/defer
53 * every time the priority line is asserted (BT is sending signals on the
54 * priority line in the PCIx).
55 * set bt_coex_active to false, uCode will ignore the BT activity and
56 * perform the normal operation
58 * User might experience transmit issue on some platform due to WiFi/BT
59 * co-exist problem. The possible behaviors are:
60 * Able to scan and finding all the available AP
61 * Not able to associate with any AP
62 * On those platforms, WiFi communication can be restored by set
63 * "bt_coex_active" module parameter to "false"
65 * default: bt_coex_active = true (BT_COEX_ENABLE)
67 static bool bt_coex_active
= true;
68 module_param(bt_coex_active
, bool, S_IRUGO
);
69 MODULE_PARM_DESC(bt_coex_active
, "enable wifi/bluetooth co-exist");
71 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
72 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
73 IWL_RATE_SISO_##s##M_PLCP, \
74 IWL_RATE_MIMO2_##s##M_PLCP,\
75 IWL_RATE_MIMO3_##s##M_PLCP,\
76 IWL_RATE_##r##M_IEEE, \
77 IWL_RATE_##ip##M_INDEX, \
78 IWL_RATE_##in##M_INDEX, \
79 IWL_RATE_##rp##M_INDEX, \
80 IWL_RATE_##rn##M_INDEX, \
81 IWL_RATE_##pp##M_INDEX, \
82 IWL_RATE_##np##M_INDEX }
85 EXPORT_SYMBOL(iwl_debug_level
);
89 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
91 * If there isn't a valid next or previous rate then INV is used which
92 * maps to IWL_RATE_INVALID
95 const struct iwl_rate_info iwl_rates
[IWL_RATE_COUNT
] = {
96 IWL_DECLARE_RATE_INFO(1, INV
, INV
, 2, INV
, 2, INV
, 2), /* 1mbps */
97 IWL_DECLARE_RATE_INFO(2, INV
, 1, 5, 1, 5, 1, 5), /* 2mbps */
98 IWL_DECLARE_RATE_INFO(5, INV
, 2, 6, 2, 11, 2, 11), /*5.5mbps */
99 IWL_DECLARE_RATE_INFO(11, INV
, 9, 12, 9, 12, 5, 18), /* 11mbps */
100 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
101 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
102 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
103 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
104 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
105 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
106 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
107 IWL_DECLARE_RATE_INFO(54, 54, 48, INV
, 48, INV
, 48, INV
),/* 54mbps */
108 IWL_DECLARE_RATE_INFO(60, 60, 48, INV
, 48, INV
, 48, INV
),/* 60mbps */
109 /* FIXME:RS: ^^ should be INV (legacy) */
111 EXPORT_SYMBOL(iwl_rates
);
113 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags
)
118 if (rate_n_flags
& RATE_MCS_HT_MSK
) {
119 idx
= (rate_n_flags
& 0xff);
121 if (idx
>= IWL_RATE_MIMO3_6M_PLCP
)
122 idx
= idx
- IWL_RATE_MIMO3_6M_PLCP
;
123 else if (idx
>= IWL_RATE_MIMO2_6M_PLCP
)
124 idx
= idx
- IWL_RATE_MIMO2_6M_PLCP
;
126 idx
+= IWL_FIRST_OFDM_RATE
;
127 /* skip 9M not supported in ht*/
128 if (idx
>= IWL_RATE_9M_INDEX
)
130 if ((idx
>= IWL_FIRST_OFDM_RATE
) && (idx
<= IWL_LAST_OFDM_RATE
))
133 /* legacy rate format, search for match in table */
135 for (idx
= 0; idx
< ARRAY_SIZE(iwl_rates
); idx
++)
136 if (iwl_rates
[idx
].plcp
== (rate_n_flags
& 0xFF))
142 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx
);
144 u8
iwl_toggle_tx_ant(struct iwl_priv
*priv
, u8 ant
, u8 valid
)
149 for (i
= 0; i
< RATE_ANT_NUM
- 1; i
++) {
150 ind
= (ind
+ 1) < RATE_ANT_NUM
? ind
+ 1 : 0;
151 if (valid
& BIT(ind
))
156 EXPORT_SYMBOL(iwl_toggle_tx_ant
);
158 const u8 iwl_bcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
159 EXPORT_SYMBOL(iwl_bcast_addr
);
162 /* This function both allocates and initializes hw and priv. */
163 struct ieee80211_hw
*iwl_alloc_all(struct iwl_cfg
*cfg
,
164 struct ieee80211_ops
*hw_ops
)
166 struct iwl_priv
*priv
;
168 /* mac80211 allocates memory for this device instance, including
169 * space for this driver's private structure */
170 struct ieee80211_hw
*hw
=
171 ieee80211_alloc_hw(sizeof(struct iwl_priv
), hw_ops
);
173 printk(KERN_ERR
"%s: Can not allocate network device\n",
184 EXPORT_SYMBOL(iwl_alloc_all
);
186 void iwl_hw_detect(struct iwl_priv
*priv
)
188 priv
->hw_rev
= _iwl_read32(priv
, CSR_HW_REV
);
189 priv
->hw_wa_rev
= _iwl_read32(priv
, CSR_HW_REV_WA_REG
);
190 pci_read_config_byte(priv
->pci_dev
, PCI_REVISION_ID
, &priv
->rev_id
);
192 EXPORT_SYMBOL(iwl_hw_detect
);
197 static void iwl_update_qos(struct iwl_priv
*priv
)
199 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
202 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
204 if (priv
->qos_data
.qos_active
)
205 priv
->qos_data
.def_qos_parm
.qos_flags
|=
206 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
208 if (priv
->current_ht_config
.is_ht
)
209 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
211 IWL_DEBUG_QOS(priv
, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
212 priv
->qos_data
.qos_active
,
213 priv
->qos_data
.def_qos_parm
.qos_flags
);
215 iwl_send_cmd_pdu_async(priv
, REPLY_QOS_PARAM
,
216 sizeof(struct iwl_qosparam_cmd
),
217 &priv
->qos_data
.def_qos_parm
, NULL
);
220 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
221 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
222 static void iwlcore_init_ht_hw_capab(const struct iwl_priv
*priv
,
223 struct ieee80211_sta_ht_cap
*ht_info
,
224 enum ieee80211_band band
)
226 u16 max_bit_rate
= 0;
227 u8 rx_chains_num
= priv
->hw_params
.rx_chains_num
;
228 u8 tx_chains_num
= priv
->hw_params
.tx_chains_num
;
231 memset(&ht_info
->mcs
, 0, sizeof(ht_info
->mcs
));
233 ht_info
->ht_supported
= true;
235 if (priv
->cfg
->ht_greenfield_support
)
236 ht_info
->cap
|= IEEE80211_HT_CAP_GRN_FLD
;
237 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_20
;
238 max_bit_rate
= MAX_BIT_RATE_20_MHZ
;
239 if (priv
->hw_params
.ht40_channel
& BIT(band
)) {
240 ht_info
->cap
|= IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
241 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_40
;
242 ht_info
->mcs
.rx_mask
[4] = 0x01;
243 max_bit_rate
= MAX_BIT_RATE_40_MHZ
;
246 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
247 ht_info
->cap
|= IEEE80211_HT_CAP_MAX_AMSDU
;
249 ht_info
->ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
250 ht_info
->ampdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
252 ht_info
->mcs
.rx_mask
[0] = 0xFF;
253 if (rx_chains_num
>= 2)
254 ht_info
->mcs
.rx_mask
[1] = 0xFF;
255 if (rx_chains_num
>= 3)
256 ht_info
->mcs
.rx_mask
[2] = 0xFF;
258 /* Highest supported Rx data rate */
259 max_bit_rate
*= rx_chains_num
;
260 WARN_ON(max_bit_rate
& ~IEEE80211_HT_MCS_RX_HIGHEST_MASK
);
261 ht_info
->mcs
.rx_highest
= cpu_to_le16(max_bit_rate
);
263 /* Tx MCS capabilities */
264 ht_info
->mcs
.tx_params
= IEEE80211_HT_MCS_TX_DEFINED
;
265 if (tx_chains_num
!= rx_chains_num
) {
266 ht_info
->mcs
.tx_params
|= IEEE80211_HT_MCS_TX_RX_DIFF
;
267 ht_info
->mcs
.tx_params
|= ((tx_chains_num
- 1) <<
268 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
);
273 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
275 int iwlcore_init_geos(struct iwl_priv
*priv
)
277 struct iwl_channel_info
*ch
;
278 struct ieee80211_supported_band
*sband
;
279 struct ieee80211_channel
*channels
;
280 struct ieee80211_channel
*geo_ch
;
281 struct ieee80211_rate
*rates
;
284 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
||
285 priv
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
) {
286 IWL_DEBUG_INFO(priv
, "Geography modes already initialized.\n");
287 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
291 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
292 priv
->channel_count
, GFP_KERNEL
);
296 rates
= kzalloc((sizeof(struct ieee80211_rate
) * IWL_RATE_COUNT_LEGACY
),
303 /* 5.2GHz channels start after the 2.4GHz channels */
304 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
305 sband
->channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
307 sband
->bitrates
= &rates
[IWL_FIRST_OFDM_RATE
];
308 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
- IWL_FIRST_OFDM_RATE
;
310 if (priv
->cfg
->sku
& IWL_SKU_N
)
311 iwlcore_init_ht_hw_capab(priv
, &sband
->ht_cap
,
312 IEEE80211_BAND_5GHZ
);
314 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
315 sband
->channels
= channels
;
317 sband
->bitrates
= rates
;
318 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
;
320 if (priv
->cfg
->sku
& IWL_SKU_N
)
321 iwlcore_init_ht_hw_capab(priv
, &sband
->ht_cap
,
322 IEEE80211_BAND_2GHZ
);
324 priv
->ieee_channels
= channels
;
325 priv
->ieee_rates
= rates
;
327 for (i
= 0; i
< priv
->channel_count
; i
++) {
328 ch
= &priv
->channel_info
[i
];
330 /* FIXME: might be removed if scan is OK */
331 if (!is_channel_valid(ch
))
334 if (is_channel_a_band(ch
))
335 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
337 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
339 geo_ch
= &sband
->channels
[sband
->n_channels
++];
341 geo_ch
->center_freq
=
342 ieee80211_channel_to_frequency(ch
->channel
);
343 geo_ch
->max_power
= ch
->max_power_avg
;
344 geo_ch
->max_antenna_gain
= 0xff;
345 geo_ch
->hw_value
= ch
->channel
;
347 if (is_channel_valid(ch
)) {
348 if (!(ch
->flags
& EEPROM_CHANNEL_IBSS
))
349 geo_ch
->flags
|= IEEE80211_CHAN_NO_IBSS
;
351 if (!(ch
->flags
& EEPROM_CHANNEL_ACTIVE
))
352 geo_ch
->flags
|= IEEE80211_CHAN_PASSIVE_SCAN
;
354 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
355 geo_ch
->flags
|= IEEE80211_CHAN_RADAR
;
357 geo_ch
->flags
|= ch
->ht40_extension_channel
;
359 if (ch
->max_power_avg
> priv
->tx_power_device_lmt
)
360 priv
->tx_power_device_lmt
= ch
->max_power_avg
;
362 geo_ch
->flags
|= IEEE80211_CHAN_DISABLED
;
365 IWL_DEBUG_INFO(priv
, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
366 ch
->channel
, geo_ch
->center_freq
,
367 is_channel_a_band(ch
) ? "5.2" : "2.4",
368 geo_ch
->flags
& IEEE80211_CHAN_DISABLED
?
369 "restricted" : "valid",
373 if ((priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
== 0) &&
374 priv
->cfg
->sku
& IWL_SKU_A
) {
375 IWL_INFO(priv
, "Incorrectly detected BG card as ABG. "
376 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
377 priv
->pci_dev
->device
,
378 priv
->pci_dev
->subsystem_device
);
379 priv
->cfg
->sku
&= ~IWL_SKU_A
;
382 IWL_INFO(priv
, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
383 priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
,
384 priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
);
386 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
390 EXPORT_SYMBOL(iwlcore_init_geos
);
393 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
395 void iwlcore_free_geos(struct iwl_priv
*priv
)
397 kfree(priv
->ieee_channels
);
398 kfree(priv
->ieee_rates
);
399 clear_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
401 EXPORT_SYMBOL(iwlcore_free_geos
);
404 * iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
407 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info
*info
,
410 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
411 *tx_flags
|= TX_CMD_FLG_RTS_MSK
;
412 *tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
413 } else if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
414 *tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
415 *tx_flags
|= TX_CMD_FLG_CTS_MSK
;
418 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag
);
420 static bool is_single_rx_stream(struct iwl_priv
*priv
)
422 return priv
->current_ht_config
.smps
== IEEE80211_SMPS_STATIC
||
423 priv
->current_ht_config
.single_chain_sufficient
;
426 static u8
iwl_is_channel_extension(struct iwl_priv
*priv
,
427 enum ieee80211_band band
,
428 u16 channel
, u8 extension_chan_offset
)
430 const struct iwl_channel_info
*ch_info
;
432 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
433 if (!is_channel_valid(ch_info
))
436 if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_ABOVE
)
437 return !(ch_info
->ht40_extension_channel
&
438 IEEE80211_CHAN_NO_HT40PLUS
);
439 else if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
440 return !(ch_info
->ht40_extension_channel
&
441 IEEE80211_CHAN_NO_HT40MINUS
);
446 u8
iwl_is_ht40_tx_allowed(struct iwl_priv
*priv
,
447 struct ieee80211_sta_ht_cap
*sta_ht_inf
)
449 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
451 if (!ht_conf
->is_ht
|| !ht_conf
->is_40mhz
)
454 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
455 * the bit will not set if it is pure 40MHz case
458 if (!sta_ht_inf
->ht_supported
)
461 #ifdef CONFIG_IWLWIFI_DEBUGFS
462 if (priv
->disable_ht40
)
465 return iwl_is_channel_extension(priv
, priv
->band
,
466 le16_to_cpu(priv
->staging_rxon
.channel
),
467 ht_conf
->extension_chan_offset
);
469 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed
);
471 static u16
iwl_adjust_beacon_interval(u16 beacon_val
, u16 max_beacon_val
)
474 u16 beacon_factor
= 0;
476 beacon_factor
= (beacon_val
+ max_beacon_val
) / max_beacon_val
;
477 new_val
= beacon_val
/ beacon_factor
;
480 new_val
= max_beacon_val
;
485 void iwl_setup_rxon_timing(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
488 s32 interval_tm
, rem
;
490 struct ieee80211_conf
*conf
= NULL
;
493 conf
= ieee80211_get_hw_conf(priv
->hw
);
495 spin_lock_irqsave(&priv
->lock
, flags
);
496 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
497 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
499 beacon_int
= vif
->bss_conf
.beacon_int
;
501 if (vif
->type
== NL80211_IFTYPE_ADHOC
) {
502 /* TODO: we need to get atim_window from upper stack
503 * for now we set to 0 */
504 priv
->rxon_timing
.atim_window
= 0;
506 priv
->rxon_timing
.atim_window
= 0;
509 beacon_int
= iwl_adjust_beacon_interval(beacon_int
,
510 priv
->hw_params
.max_beacon_itrvl
* TIME_UNIT
);
511 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
513 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
514 interval_tm
= beacon_int
* TIME_UNIT
;
515 rem
= do_div(tsf
, interval_tm
);
516 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
518 spin_unlock_irqrestore(&priv
->lock
, flags
);
519 IWL_DEBUG_ASSOC(priv
,
520 "beacon interval %d beacon timer %d beacon tim %d\n",
521 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
522 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
523 le16_to_cpu(priv
->rxon_timing
.atim_window
));
525 EXPORT_SYMBOL(iwl_setup_rxon_timing
);
527 void iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
529 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
532 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
534 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
537 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto
);
540 * iwl_check_rxon_cmd - validate RXON structure is valid
542 * NOTE: This is really only useful during development and can eventually
543 * be #ifdef'd out once the driver is stable and folks aren't actively
546 int iwl_check_rxon_cmd(struct iwl_priv
*priv
)
550 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
552 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
553 error
|= le32_to_cpu(rxon
->flags
&
554 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
555 RXON_FLG_RADAR_DETECT_MSK
));
557 IWL_WARN(priv
, "check 24G fields %d | %d\n",
560 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
561 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
563 IWL_WARN(priv
, "check 52 fields %d | %d\n",
565 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
567 IWL_WARN(priv
, "check 52 CCK %d | %d\n",
570 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
572 IWL_WARN(priv
, "check mac addr %d | %d\n", counter
++, error
);
574 /* make sure basic rates 6Mbps and 1Mbps are supported */
575 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
576 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
578 IWL_WARN(priv
, "check basic rate %d | %d\n", counter
++, error
);
580 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
582 IWL_WARN(priv
, "check assoc id %d | %d\n", counter
++, error
);
584 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
585 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
587 IWL_WARN(priv
, "check CCK and short slot %d | %d\n",
590 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
591 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
593 IWL_WARN(priv
, "check CCK & auto detect %d | %d\n",
596 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
597 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
599 IWL_WARN(priv
, "check TGG and auto detect %d | %d\n",
603 IWL_WARN(priv
, "Tuning to channel %d\n",
604 le16_to_cpu(rxon
->channel
));
607 IWL_ERR(priv
, "Not a valid iwl_rxon_assoc_cmd field values\n");
612 EXPORT_SYMBOL(iwl_check_rxon_cmd
);
615 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
616 * @priv: staging_rxon is compared to active_rxon
618 * If the RXON structure is changing enough to require a new tune,
619 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
620 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
622 int iwl_full_rxon_required(struct iwl_priv
*priv
)
625 /* These items are only settable from the full RXON command */
626 if (!(iwl_is_associated(priv
)) ||
627 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
628 priv
->active_rxon
.bssid_addr
) ||
629 compare_ether_addr(priv
->staging_rxon
.node_addr
,
630 priv
->active_rxon
.node_addr
) ||
631 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
632 priv
->active_rxon
.wlap_bssid_addr
) ||
633 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
634 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
635 (priv
->staging_rxon
.air_propagation
!=
636 priv
->active_rxon
.air_propagation
) ||
637 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
638 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
639 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
640 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
641 (priv
->staging_rxon
.ofdm_ht_triple_stream_basic_rates
!=
642 priv
->active_rxon
.ofdm_ht_triple_stream_basic_rates
) ||
643 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
646 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
647 * be updated with the RXON_ASSOC command -- however only some
648 * flag transitions are allowed using RXON_ASSOC */
650 /* Check if we are not switching bands */
651 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
652 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
655 /* Check if we are switching association toggle */
656 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
657 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
662 EXPORT_SYMBOL(iwl_full_rxon_required
);
664 u8
iwl_rate_get_lowest_plcp(struct iwl_priv
*priv
)
667 * Assign the lowest rate -- should really get this from
668 * the beacon skb from mac80211.
670 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
671 return IWL_RATE_1M_PLCP
;
673 return IWL_RATE_6M_PLCP
;
675 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp
);
677 void iwl_set_rxon_ht(struct iwl_priv
*priv
, struct iwl_ht_config
*ht_conf
)
679 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
681 if (!ht_conf
->is_ht
) {
682 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
683 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
|
684 RXON_FLG_HT40_PROT_MSK
|
685 RXON_FLG_HT_PROT_MSK
);
689 /* FIXME: if the definition of ht_protection changed, the "translation"
690 * will be needed for rxon->flags
692 rxon
->flags
|= cpu_to_le32(ht_conf
->ht_protection
<< RXON_FLG_HT_OPERATING_MODE_POS
);
694 /* Set up channel bandwidth:
695 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
696 /* clear the HT channel mode before set the mode */
697 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
698 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
699 if (iwl_is_ht40_tx_allowed(priv
, NULL
)) {
701 if (ht_conf
->ht_protection
== IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
) {
702 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_PURE_40
;
703 /* Note: control channel is opposite of extension channel */
704 switch (ht_conf
->extension_chan_offset
) {
705 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
706 rxon
->flags
&= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
708 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
709 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
713 /* Note: control channel is opposite of extension channel */
714 switch (ht_conf
->extension_chan_offset
) {
715 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
716 rxon
->flags
&= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
717 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
719 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
720 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
721 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
723 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
725 /* channel location only valid if in Mixed mode */
726 IWL_ERR(priv
, "invalid extension channel offset\n");
731 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_LEGACY
;
734 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
735 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
737 IWL_DEBUG_ASSOC(priv
, "rxon flags 0x%X operation mode :0x%X "
738 "extension channel offset 0x%x\n",
739 le32_to_cpu(rxon
->flags
), ht_conf
->ht_protection
,
740 ht_conf
->extension_chan_offset
);
742 EXPORT_SYMBOL(iwl_set_rxon_ht
);
744 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
745 #define IWL_NUM_RX_CHAINS_SINGLE 2
746 #define IWL_NUM_IDLE_CHAINS_DUAL 2
747 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
750 * Determine how many receiver/antenna chains to use.
752 * More provides better reception via diversity. Fewer saves power
753 * at the expense of throughput, but only when not in powersave to
756 * MIMO (dual stream) requires at least 2, but works better with 3.
757 * This does not determine *which* chains to use, just how many.
759 static int iwl_get_active_rx_chain_count(struct iwl_priv
*priv
)
761 /* # of Rx chains to use when expecting MIMO. */
762 if (is_single_rx_stream(priv
))
763 return IWL_NUM_RX_CHAINS_SINGLE
;
765 return IWL_NUM_RX_CHAINS_MULTIPLE
;
769 * When we are in power saving mode, unless device support spatial
770 * multiplexing power save, use the active count for rx chain count.
772 static int iwl_get_idle_rx_chain_count(struct iwl_priv
*priv
, int active_cnt
)
774 /* # Rx chains when idling, depending on SMPS mode */
775 switch (priv
->current_ht_config
.smps
) {
776 case IEEE80211_SMPS_STATIC
:
777 case IEEE80211_SMPS_DYNAMIC
:
778 return IWL_NUM_IDLE_CHAINS_SINGLE
;
779 case IEEE80211_SMPS_OFF
:
782 WARN(1, "invalid SMPS mode %d",
783 priv
->current_ht_config
.smps
);
789 static u8
iwl_count_chain_bitmap(u32 chain_bitmap
)
792 res
= (chain_bitmap
& BIT(0)) >> 0;
793 res
+= (chain_bitmap
& BIT(1)) >> 1;
794 res
+= (chain_bitmap
& BIT(2)) >> 2;
795 res
+= (chain_bitmap
& BIT(3)) >> 3;
800 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
802 * Selects how many and which Rx receivers/antennas/chains to use.
803 * This should not be used for scan command ... it puts data in wrong place.
805 void iwl_set_rxon_chain(struct iwl_priv
*priv
)
807 bool is_single
= is_single_rx_stream(priv
);
808 bool is_cam
= !test_bit(STATUS_POWER_PMI
, &priv
->status
);
809 u8 idle_rx_cnt
, active_rx_cnt
, valid_rx_cnt
;
813 /* Tell uCode which antennas are actually connected.
814 * Before first association, we assume all antennas are connected.
815 * Just after first association, iwl_chain_noise_calibration()
816 * checks which antennas actually *are* connected. */
817 if (priv
->chain_noise_data
.active_chains
)
818 active_chains
= priv
->chain_noise_data
.active_chains
;
820 active_chains
= priv
->hw_params
.valid_rx_ant
;
822 rx_chain
= active_chains
<< RXON_RX_CHAIN_VALID_POS
;
824 /* How many receivers should we use? */
825 active_rx_cnt
= iwl_get_active_rx_chain_count(priv
);
826 idle_rx_cnt
= iwl_get_idle_rx_chain_count(priv
, active_rx_cnt
);
829 /* correct rx chain count according hw settings
830 * and chain noise calibration
832 valid_rx_cnt
= iwl_count_chain_bitmap(active_chains
);
833 if (valid_rx_cnt
< active_rx_cnt
)
834 active_rx_cnt
= valid_rx_cnt
;
836 if (valid_rx_cnt
< idle_rx_cnt
)
837 idle_rx_cnt
= valid_rx_cnt
;
839 rx_chain
|= active_rx_cnt
<< RXON_RX_CHAIN_MIMO_CNT_POS
;
840 rx_chain
|= idle_rx_cnt
<< RXON_RX_CHAIN_CNT_POS
;
842 priv
->staging_rxon
.rx_chain
= cpu_to_le16(rx_chain
);
844 if (!is_single
&& (active_rx_cnt
>= IWL_NUM_RX_CHAINS_SINGLE
) && is_cam
)
845 priv
->staging_rxon
.rx_chain
|= RXON_RX_CHAIN_MIMO_FORCE_MSK
;
847 priv
->staging_rxon
.rx_chain
&= ~RXON_RX_CHAIN_MIMO_FORCE_MSK
;
849 IWL_DEBUG_ASSOC(priv
, "rx_chain=0x%X active=%d idle=%d\n",
850 priv
->staging_rxon
.rx_chain
,
851 active_rx_cnt
, idle_rx_cnt
);
853 WARN_ON(active_rx_cnt
== 0 || idle_rx_cnt
== 0 ||
854 active_rx_cnt
< idle_rx_cnt
);
856 EXPORT_SYMBOL(iwl_set_rxon_chain
);
858 /* Return valid channel */
859 u8
iwl_get_single_channel_number(struct iwl_priv
*priv
,
860 enum ieee80211_band band
)
862 const struct iwl_channel_info
*ch_info
;
866 /* only scan single channel, good enough to reset the RF */
867 /* pick the first valid not in-use channel */
868 if (band
== IEEE80211_BAND_5GHZ
) {
869 for (i
= 14; i
< priv
->channel_count
; i
++) {
870 if (priv
->channel_info
[i
].channel
!=
871 le16_to_cpu(priv
->staging_rxon
.channel
)) {
872 channel
= priv
->channel_info
[i
].channel
;
873 ch_info
= iwl_get_channel_info(priv
,
875 if (is_channel_valid(ch_info
))
880 for (i
= 0; i
< 14; i
++) {
881 if (priv
->channel_info
[i
].channel
!=
882 le16_to_cpu(priv
->staging_rxon
.channel
)) {
884 priv
->channel_info
[i
].channel
;
885 ch_info
= iwl_get_channel_info(priv
,
887 if (is_channel_valid(ch_info
))
895 EXPORT_SYMBOL(iwl_get_single_channel_number
);
898 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
899 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
900 * @channel: Any channel valid for the requested phymode
902 * In addition to setting the staging RXON, priv->phymode is also set.
904 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
905 * in the staging RXON flag structure based on the phymode
907 int iwl_set_rxon_channel(struct iwl_priv
*priv
, struct ieee80211_channel
*ch
)
909 enum ieee80211_band band
= ch
->band
;
910 u16 channel
= ieee80211_frequency_to_channel(ch
->center_freq
);
912 if (!iwl_get_channel_info(priv
, band
, channel
)) {
913 IWL_DEBUG_INFO(priv
, "Could not set channel to %d [%d]\n",
918 if ((le16_to_cpu(priv
->staging_rxon
.channel
) == channel
) &&
919 (priv
->band
== band
))
922 priv
->staging_rxon
.channel
= cpu_to_le16(channel
);
923 if (band
== IEEE80211_BAND_5GHZ
)
924 priv
->staging_rxon
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
926 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
930 IWL_DEBUG_INFO(priv
, "Staging channel set to %d [%d]\n", channel
, band
);
934 EXPORT_SYMBOL(iwl_set_rxon_channel
);
936 void iwl_set_flags_for_band(struct iwl_priv
*priv
,
937 enum ieee80211_band band
,
938 struct ieee80211_vif
*vif
)
940 if (band
== IEEE80211_BAND_5GHZ
) {
941 priv
->staging_rxon
.flags
&=
942 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
944 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
946 /* Copied from iwl_post_associate() */
947 if (vif
&& vif
->bss_conf
.use_short_slot
)
948 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
950 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
952 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
953 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
954 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
957 EXPORT_SYMBOL(iwl_set_flags_for_band
);
960 * initialize rxon structure with default values from eeprom
962 void iwl_connection_init_rx_config(struct iwl_priv
*priv
,
963 struct ieee80211_vif
*vif
)
965 const struct iwl_channel_info
*ch_info
;
966 enum nl80211_iftype type
= NL80211_IFTYPE_STATION
;
971 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
974 case NL80211_IFTYPE_AP
:
975 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
978 case NL80211_IFTYPE_STATION
:
979 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
980 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
983 case NL80211_IFTYPE_ADHOC
:
984 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
985 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
986 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
987 RXON_FILTER_ACCEPT_GRP_MSK
;
991 IWL_ERR(priv
, "Unsupported interface type %d\n", type
);
996 /* TODO: Figure out when short_preamble would be set and cache from
998 if (!hw_to_local(priv
->hw
)->short_preamble
)
999 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1001 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1004 ch_info
= iwl_get_channel_info(priv
, priv
->band
,
1005 le16_to_cpu(priv
->active_rxon
.channel
));
1008 ch_info
= &priv
->channel_info
[0];
1010 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
1011 priv
->band
= ch_info
->band
;
1013 iwl_set_flags_for_band(priv
, priv
->band
, vif
);
1015 priv
->staging_rxon
.ofdm_basic_rates
=
1016 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
1017 priv
->staging_rxon
.cck_basic_rates
=
1018 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
1020 /* clear both MIX and PURE40 mode flag */
1021 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED
|
1022 RXON_FLG_CHANNEL_MODE_PURE_40
);
1025 memcpy(priv
->staging_rxon
.node_addr
, vif
->addr
, ETH_ALEN
);
1027 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
1028 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
1029 priv
->staging_rxon
.ofdm_ht_triple_stream_basic_rates
= 0xff;
1031 EXPORT_SYMBOL(iwl_connection_init_rx_config
);
1033 void iwl_set_rate(struct iwl_priv
*priv
)
1035 const struct ieee80211_supported_band
*hw
= NULL
;
1036 struct ieee80211_rate
*rate
;
1039 hw
= iwl_get_hw_mode(priv
, priv
->band
);
1041 IWL_ERR(priv
, "Failed to set rate: unable to get hw mode\n");
1045 priv
->active_rate
= 0;
1047 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
1048 rate
= &(hw
->bitrates
[i
]);
1049 if (rate
->hw_value
< IWL_RATE_COUNT_LEGACY
)
1050 priv
->active_rate
|= (1 << rate
->hw_value
);
1053 IWL_DEBUG_RATE(priv
, "Set active_rate = %0x\n", priv
->active_rate
);
1055 priv
->staging_rxon
.cck_basic_rates
=
1056 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
1058 priv
->staging_rxon
.ofdm_basic_rates
=
1059 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
1061 EXPORT_SYMBOL(iwl_set_rate
);
1063 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
1065 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1068 if (priv
->switch_rxon
.switch_in_progress
) {
1069 ieee80211_chswitch_done(priv
->vif
, is_success
);
1070 mutex_lock(&priv
->mutex
);
1071 priv
->switch_rxon
.switch_in_progress
= false;
1072 mutex_unlock(&priv
->mutex
);
1075 EXPORT_SYMBOL(iwl_chswitch_done
);
1077 void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
1079 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1080 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
1081 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
1083 if (priv
->switch_rxon
.switch_in_progress
) {
1084 if (!le32_to_cpu(csa
->status
) &&
1085 (csa
->channel
== priv
->switch_rxon
.channel
)) {
1086 rxon
->channel
= csa
->channel
;
1087 priv
->staging_rxon
.channel
= csa
->channel
;
1088 IWL_DEBUG_11H(priv
, "CSA notif: channel %d\n",
1089 le16_to_cpu(csa
->channel
));
1090 iwl_chswitch_done(priv
, true);
1092 IWL_ERR(priv
, "CSA notif (fail) : channel %d\n",
1093 le16_to_cpu(csa
->channel
));
1094 iwl_chswitch_done(priv
, false);
1098 EXPORT_SYMBOL(iwl_rx_csa
);
1100 #ifdef CONFIG_IWLWIFI_DEBUG
1101 void iwl_print_rx_config_cmd(struct iwl_priv
*priv
)
1103 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
1105 IWL_DEBUG_RADIO(priv
, "RX CONFIG:\n");
1106 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
1107 IWL_DEBUG_RADIO(priv
, "u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
1108 IWL_DEBUG_RADIO(priv
, "u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
1109 IWL_DEBUG_RADIO(priv
, "u32 filter_flags: 0x%08x\n",
1110 le32_to_cpu(rxon
->filter_flags
));
1111 IWL_DEBUG_RADIO(priv
, "u8 dev_type: 0x%x\n", rxon
->dev_type
);
1112 IWL_DEBUG_RADIO(priv
, "u8 ofdm_basic_rates: 0x%02x\n",
1113 rxon
->ofdm_basic_rates
);
1114 IWL_DEBUG_RADIO(priv
, "u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
1115 IWL_DEBUG_RADIO(priv
, "u8[6] node_addr: %pM\n", rxon
->node_addr
);
1116 IWL_DEBUG_RADIO(priv
, "u8[6] bssid_addr: %pM\n", rxon
->bssid_addr
);
1117 IWL_DEBUG_RADIO(priv
, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
1119 EXPORT_SYMBOL(iwl_print_rx_config_cmd
);
1122 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1124 void iwl_irq_handle_error(struct iwl_priv
*priv
)
1126 /* Set the FW error flag -- cleared on iwl_down */
1127 set_bit(STATUS_FW_ERROR
, &priv
->status
);
1129 /* Cancel currently queued command. */
1130 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
1132 IWL_ERR(priv
, "Loaded firmware version: %s\n",
1133 priv
->hw
->wiphy
->fw_version
);
1135 priv
->cfg
->ops
->lib
->dump_nic_error_log(priv
);
1136 if (priv
->cfg
->ops
->lib
->dump_csr
)
1137 priv
->cfg
->ops
->lib
->dump_csr(priv
);
1138 if (priv
->cfg
->ops
->lib
->dump_fh
)
1139 priv
->cfg
->ops
->lib
->dump_fh(priv
, NULL
, false);
1140 priv
->cfg
->ops
->lib
->dump_nic_event_log(priv
, false, NULL
, false);
1141 #ifdef CONFIG_IWLWIFI_DEBUG
1142 if (iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
)
1143 iwl_print_rx_config_cmd(priv
);
1146 wake_up_interruptible(&priv
->wait_command_queue
);
1148 /* Keep the restart process from trying to send host
1149 * commands by clearing the INIT status bit */
1150 clear_bit(STATUS_READY
, &priv
->status
);
1152 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1153 IWL_DEBUG(priv
, IWL_DL_FW_ERRORS
,
1154 "Restarting adapter due to uCode error.\n");
1156 if (priv
->cfg
->mod_params
->restart_fw
)
1157 queue_work(priv
->workqueue
, &priv
->restart
);
1160 EXPORT_SYMBOL(iwl_irq_handle_error
);
1162 static int iwl_apm_stop_master(struct iwl_priv
*priv
)
1166 /* stop device's busmaster DMA activity */
1167 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
1169 ret
= iwl_poll_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_MASTER_DISABLED
,
1170 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
1172 IWL_WARN(priv
, "Master Disable Timed Out, 100 usec\n");
1174 IWL_DEBUG_INFO(priv
, "stop master\n");
1179 void iwl_apm_stop(struct iwl_priv
*priv
)
1181 IWL_DEBUG_INFO(priv
, "Stop card, put in low power state\n");
1183 /* Stop device's DMA activity */
1184 iwl_apm_stop_master(priv
);
1186 /* Reset the entire device */
1187 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
1192 * Clear "initialization complete" bit to move adapter from
1193 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1195 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1197 EXPORT_SYMBOL(iwl_apm_stop
);
1201 * Start up NIC's basic functionality after it has been reset
1202 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1203 * NOTE: This does not load uCode nor start the embedded processor
1205 int iwl_apm_init(struct iwl_priv
*priv
)
1210 IWL_DEBUG_INFO(priv
, "Init card's basic functions\n");
1213 * Use "set_bit" below rather than "write", to preserve any hardware
1214 * bits already set by default after reset.
1217 /* Disable L0S exit timer (platform NMI Work/Around) */
1218 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
1219 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
1222 * Disable L0s without affecting L1;
1223 * don't wait for ICH L0s (ICH bug W/A)
1225 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
1226 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX
);
1228 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1229 iwl_set_bit(priv
, CSR_DBG_HPET_MEM_REG
, CSR_DBG_HPET_MEM_REG_VAL
);
1232 * Enable HAP INTA (interrupt from management bus) to
1233 * wake device's PCI Express link L1a -> L0s
1234 * NOTE: This is no-op for 3945 (non-existant bit)
1236 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1237 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A
);
1240 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1241 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1242 * If so (likely), disable L0S, so device moves directly L0->L1;
1243 * costs negligible amount of power savings.
1244 * If not (unlikely), enable L0S, so there is at least some
1245 * power savings, even without L1.
1247 if (priv
->cfg
->set_l0s
) {
1248 lctl
= iwl_pcie_link_ctl(priv
);
1249 if ((lctl
& PCI_CFG_LINK_CTRL_VAL_L1_EN
) ==
1250 PCI_CFG_LINK_CTRL_VAL_L1_EN
) {
1251 /* L1-ASPM enabled; disable(!) L0S */
1252 iwl_set_bit(priv
, CSR_GIO_REG
,
1253 CSR_GIO_REG_VAL_L0S_ENABLED
);
1254 IWL_DEBUG_POWER(priv
, "L1 Enabled; Disabling L0S\n");
1256 /* L1-ASPM disabled; enable(!) L0S */
1257 iwl_clear_bit(priv
, CSR_GIO_REG
,
1258 CSR_GIO_REG_VAL_L0S_ENABLED
);
1259 IWL_DEBUG_POWER(priv
, "L1 Disabled; Enabling L0S\n");
1263 /* Configure analog phase-lock-loop before activating to D0A */
1264 if (priv
->cfg
->pll_cfg_val
)
1265 iwl_set_bit(priv
, CSR_ANA_PLL_CFG
, priv
->cfg
->pll_cfg_val
);
1268 * Set "initialization complete" bit to move adapter from
1269 * D0U* --> D0A* (powered-up active) state.
1271 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1274 * Wait for clock stabilization; once stabilized, access to
1275 * device-internal resources is supported, e.g. iwl_write_prph()
1276 * and accesses to uCode SRAM.
1278 ret
= iwl_poll_bit(priv
, CSR_GP_CNTRL
,
1279 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
1280 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
1282 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
1287 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1288 * BSM (Boostrap State Machine) is only in 3945 and 4965;
1289 * later devices (i.e. 5000 and later) have non-volatile SRAM,
1290 * and don't need BSM to restore data after power-saving sleep.
1292 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1293 * do not disable clocks. This preserves any hardware bits already
1294 * set by default in "CLK_CTRL_REG" after reset.
1296 if (priv
->cfg
->use_bsm
)
1297 iwl_write_prph(priv
, APMG_CLK_EN_REG
,
1298 APMG_CLK_VAL_DMA_CLK_RQT
| APMG_CLK_VAL_BSM_CLK_RQT
);
1300 iwl_write_prph(priv
, APMG_CLK_EN_REG
,
1301 APMG_CLK_VAL_DMA_CLK_RQT
);
1304 /* Disable L1-Active */
1305 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
1306 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
1311 EXPORT_SYMBOL(iwl_apm_init
);
1315 void iwl_configure_filter(struct ieee80211_hw
*hw
,
1316 unsigned int changed_flags
,
1317 unsigned int *total_flags
,
1320 struct iwl_priv
*priv
= hw
->priv
;
1321 __le32 filter_or
= 0, filter_nand
= 0;
1323 #define CHK(test, flag) do { \
1324 if (*total_flags & (test)) \
1325 filter_or |= (flag); \
1327 filter_nand |= (flag); \
1330 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
1331 changed_flags
, *total_flags
);
1333 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
1334 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
);
1335 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
1339 mutex_lock(&priv
->mutex
);
1341 priv
->staging_rxon
.filter_flags
&= ~filter_nand
;
1342 priv
->staging_rxon
.filter_flags
|= filter_or
;
1344 iwlcore_commit_rxon(priv
);
1346 mutex_unlock(&priv
->mutex
);
1349 * Receiving all multicast frames is always enabled by the
1350 * default flags setup in iwl_connection_init_rx_config()
1351 * since we currently do not support programming multicast
1352 * filters into the device.
1354 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
1355 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
1357 EXPORT_SYMBOL(iwl_configure_filter
);
1359 int iwl_set_hw_params(struct iwl_priv
*priv
)
1361 priv
->hw_params
.max_rxq_size
= RX_QUEUE_SIZE
;
1362 priv
->hw_params
.max_rxq_log
= RX_QUEUE_SIZE_LOG
;
1363 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
1364 priv
->hw_params
.rx_page_order
= get_order(IWL_RX_BUF_SIZE_8K
);
1366 priv
->hw_params
.rx_page_order
= get_order(IWL_RX_BUF_SIZE_4K
);
1368 priv
->hw_params
.max_beacon_itrvl
= IWL_MAX_UCODE_BEACON_INTERVAL
;
1370 if (priv
->cfg
->mod_params
->disable_11n
)
1371 priv
->cfg
->sku
&= ~IWL_SKU_N
;
1373 /* Device-specific setup */
1374 return priv
->cfg
->ops
->lib
->set_hw_params(priv
);
1376 EXPORT_SYMBOL(iwl_set_hw_params
);
1378 int iwl_set_tx_power(struct iwl_priv
*priv
, s8 tx_power
, bool force
)
1381 s8 prev_tx_power
= priv
->tx_power_user_lmt
;
1383 if (tx_power
< IWLAGN_TX_POWER_TARGET_POWER_MIN
) {
1385 "Requested user TXPOWER %d below lower limit %d.\n",
1387 IWLAGN_TX_POWER_TARGET_POWER_MIN
);
1391 if (tx_power
> priv
->tx_power_device_lmt
) {
1393 "Requested user TXPOWER %d above upper limit %d.\n",
1394 tx_power
, priv
->tx_power_device_lmt
);
1398 if (priv
->tx_power_user_lmt
!= tx_power
)
1401 /* if nic is not up don't send command */
1402 if (iwl_is_ready_rf(priv
)) {
1403 priv
->tx_power_user_lmt
= tx_power
;
1404 if (force
&& priv
->cfg
->ops
->lib
->send_tx_power
)
1405 ret
= priv
->cfg
->ops
->lib
->send_tx_power(priv
);
1406 else if (!priv
->cfg
->ops
->lib
->send_tx_power
)
1409 * if fail to set tx_power, restore the orig. tx power
1412 priv
->tx_power_user_lmt
= prev_tx_power
;
1416 * Even this is an async host command, the command
1417 * will always report success from uCode
1418 * So once driver can placing the command into the queue
1419 * successfully, driver can use priv->tx_power_user_lmt
1420 * to reflect the current tx power
1424 EXPORT_SYMBOL(iwl_set_tx_power
);
1426 irqreturn_t
iwl_isr_legacy(int irq
, void *data
)
1428 struct iwl_priv
*priv
= data
;
1429 u32 inta
, inta_mask
;
1431 unsigned long flags
;
1435 spin_lock_irqsave(&priv
->lock
, flags
);
1437 /* Disable (but don't clear!) interrupts here to avoid
1438 * back-to-back ISRs and sporadic interrupts from our NIC.
1439 * If we have something to service, the tasklet will re-enable ints.
1440 * If we *don't* have something, we'll re-enable before leaving here. */
1441 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
1442 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
1444 /* Discover which interrupts are active/pending */
1445 inta
= iwl_read32(priv
, CSR_INT
);
1446 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1448 /* Ignore interrupt if there's nothing in NIC to service.
1449 * This may be due to IRQ shared with another device,
1450 * or due to sporadic interrupts thrown from our NIC. */
1451 if (!inta
&& !inta_fh
) {
1452 IWL_DEBUG_ISR(priv
, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1456 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
1457 /* Hardware disappeared. It might have already raised
1459 IWL_WARN(priv
, "HARDWARE GONE?? INTA == 0x%08x\n", inta
);
1463 IWL_DEBUG_ISR(priv
, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1464 inta
, inta_mask
, inta_fh
);
1466 inta
&= ~CSR_INT_BIT_SCD
;
1468 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1469 if (likely(inta
|| inta_fh
))
1470 tasklet_schedule(&priv
->irq_tasklet
);
1473 spin_unlock_irqrestore(&priv
->lock
, flags
);
1477 /* re-enable interrupts here since we don't have anything to service. */
1478 /* only Re-enable if diabled by irq */
1479 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1480 iwl_enable_interrupts(priv
);
1481 spin_unlock_irqrestore(&priv
->lock
, flags
);
1484 EXPORT_SYMBOL(iwl_isr_legacy
);
1486 void iwl_send_bt_config(struct iwl_priv
*priv
)
1488 struct iwl_bt_cmd bt_cmd
= {
1489 .lead_time
= BT_LEAD_TIME_DEF
,
1490 .max_kill
= BT_MAX_KILL_DEF
,
1495 if (!bt_coex_active
)
1496 bt_cmd
.flags
= BT_COEX_DISABLE
;
1498 bt_cmd
.flags
= BT_COEX_ENABLE
;
1500 IWL_DEBUG_INFO(priv
, "BT coex %s\n",
1501 (bt_cmd
.flags
== BT_COEX_DISABLE
) ? "disable" : "active");
1503 if (iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1504 sizeof(struct iwl_bt_cmd
), &bt_cmd
))
1505 IWL_ERR(priv
, "failed to send BT Coex Config\n");
1507 EXPORT_SYMBOL(iwl_send_bt_config
);
1509 int iwl_send_statistics_request(struct iwl_priv
*priv
, u8 flags
, bool clear
)
1511 struct iwl_statistics_cmd statistics_cmd
= {
1512 .configuration_flags
=
1513 clear
? IWL_STATS_CONF_CLEAR_STATS
: 0,
1516 if (flags
& CMD_ASYNC
)
1517 return iwl_send_cmd_pdu_async(priv
, REPLY_STATISTICS_CMD
,
1518 sizeof(struct iwl_statistics_cmd
),
1519 &statistics_cmd
, NULL
);
1521 return iwl_send_cmd_pdu(priv
, REPLY_STATISTICS_CMD
,
1522 sizeof(struct iwl_statistics_cmd
),
1525 EXPORT_SYMBOL(iwl_send_statistics_request
);
1527 void iwl_rf_kill_ct_config(struct iwl_priv
*priv
)
1529 struct iwl_ct_kill_config cmd
;
1530 struct iwl_ct_kill_throttling_config adv_cmd
;
1531 unsigned long flags
;
1534 spin_lock_irqsave(&priv
->lock
, flags
);
1535 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1536 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
1537 spin_unlock_irqrestore(&priv
->lock
, flags
);
1538 priv
->thermal_throttle
.ct_kill_toggle
= false;
1540 if (priv
->cfg
->support_ct_kill_exit
) {
1541 adv_cmd
.critical_temperature_enter
=
1542 cpu_to_le32(priv
->hw_params
.ct_kill_threshold
);
1543 adv_cmd
.critical_temperature_exit
=
1544 cpu_to_le32(priv
->hw_params
.ct_kill_exit_threshold
);
1546 ret
= iwl_send_cmd_pdu(priv
, REPLY_CT_KILL_CONFIG_CMD
,
1547 sizeof(adv_cmd
), &adv_cmd
);
1549 IWL_ERR(priv
, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1551 IWL_DEBUG_INFO(priv
, "REPLY_CT_KILL_CONFIG_CMD "
1553 "critical temperature enter is %d,"
1555 priv
->hw_params
.ct_kill_threshold
,
1556 priv
->hw_params
.ct_kill_exit_threshold
);
1558 cmd
.critical_temperature_R
=
1559 cpu_to_le32(priv
->hw_params
.ct_kill_threshold
);
1561 ret
= iwl_send_cmd_pdu(priv
, REPLY_CT_KILL_CONFIG_CMD
,
1564 IWL_ERR(priv
, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1566 IWL_DEBUG_INFO(priv
, "REPLY_CT_KILL_CONFIG_CMD "
1568 "critical temperature is %d\n",
1569 priv
->hw_params
.ct_kill_threshold
);
1572 EXPORT_SYMBOL(iwl_rf_kill_ct_config
);
1578 * Use: Sets the device's internal card state to enable, disable, or halt
1580 * When in the 'enable' state the card operates as normal.
1581 * When in the 'disable' state, the card enters into a low power mode.
1582 * When in the 'halt' state, the card is shut down and must be fully
1583 * restarted to come back on.
1585 int iwl_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1587 struct iwl_host_cmd cmd
= {
1588 .id
= REPLY_CARD_STATE_CMD
,
1594 return iwl_send_cmd(priv
, &cmd
);
1597 void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
1598 struct iwl_rx_mem_buffer
*rxb
)
1600 #ifdef CONFIG_IWLWIFI_DEBUG
1601 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1602 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
1603 IWL_DEBUG_RX(priv
, "sleep mode: %d, src: %d\n",
1604 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
1607 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif
);
1609 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
1610 struct iwl_rx_mem_buffer
*rxb
)
1612 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1613 u32 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
1614 IWL_DEBUG_RADIO(priv
, "Dumping %d bytes of unhandled "
1615 "notification for %s:\n", len
,
1616 get_cmd_string(pkt
->hdr
.cmd
));
1617 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, pkt
->u
.raw
, len
);
1619 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif
);
1621 void iwl_rx_reply_error(struct iwl_priv
*priv
,
1622 struct iwl_rx_mem_buffer
*rxb
)
1624 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1626 IWL_ERR(priv
, "Error Reply type 0x%08X cmd %s (0x%02X) "
1627 "seq 0x%04X ser 0x%08X\n",
1628 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
1629 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
1630 pkt
->u
.err_resp
.cmd_id
,
1631 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
1632 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
1634 EXPORT_SYMBOL(iwl_rx_reply_error
);
1636 void iwl_clear_isr_stats(struct iwl_priv
*priv
)
1638 memset(&priv
->isr_stats
, 0, sizeof(priv
->isr_stats
));
1641 int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1642 const struct ieee80211_tx_queue_params
*params
)
1644 struct iwl_priv
*priv
= hw
->priv
;
1645 unsigned long flags
;
1648 IWL_DEBUG_MAC80211(priv
, "enter\n");
1650 if (!iwl_is_ready_rf(priv
)) {
1651 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1655 if (queue
>= AC_NUM
) {
1656 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1660 q
= AC_NUM
- 1 - queue
;
1662 spin_lock_irqsave(&priv
->lock
, flags
);
1664 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
1665 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
1666 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1667 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1668 cpu_to_le16((params
->txop
* 32));
1670 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1672 spin_unlock_irqrestore(&priv
->lock
, flags
);
1674 IWL_DEBUG_MAC80211(priv
, "leave\n");
1677 EXPORT_SYMBOL(iwl_mac_conf_tx
);
1679 static void iwl_ht_conf(struct iwl_priv
*priv
,
1680 struct ieee80211_vif
*vif
)
1682 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
1683 struct ieee80211_sta
*sta
;
1684 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1686 IWL_DEBUG_MAC80211(priv
, "enter:\n");
1688 if (!ht_conf
->is_ht
)
1691 ht_conf
->ht_protection
=
1692 bss_conf
->ht_operation_mode
& IEEE80211_HT_OP_MODE_PROTECTION
;
1693 ht_conf
->non_GF_STA_present
=
1694 !!(bss_conf
->ht_operation_mode
& IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
1696 ht_conf
->single_chain_sufficient
= false;
1698 switch (vif
->type
) {
1699 case NL80211_IFTYPE_STATION
:
1701 sta
= ieee80211_find_sta(vif
, bss_conf
->bssid
);
1703 struct ieee80211_sta_ht_cap
*ht_cap
= &sta
->ht_cap
;
1706 maxstreams
= (ht_cap
->mcs
.tx_params
&
1707 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK
)
1708 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
;
1711 if ((ht_cap
->mcs
.rx_mask
[1] == 0) &&
1712 (ht_cap
->mcs
.rx_mask
[2] == 0))
1713 ht_conf
->single_chain_sufficient
= true;
1714 if (maxstreams
<= 1)
1715 ht_conf
->single_chain_sufficient
= true;
1718 * If at all, this can only happen through a race
1719 * when the AP disconnects us while we're still
1720 * setting up the connection, in that case mac80211
1721 * will soon tell us about that.
1723 ht_conf
->single_chain_sufficient
= true;
1727 case NL80211_IFTYPE_ADHOC
:
1728 ht_conf
->single_chain_sufficient
= true;
1734 IWL_DEBUG_MAC80211(priv
, "leave\n");
1737 static inline void iwl_set_no_assoc(struct iwl_priv
*priv
)
1739 iwl_led_disassociate(priv
);
1741 * inform the ucode that there is no longer an
1742 * association and that no more packets should be
1745 priv
->staging_rxon
.filter_flags
&=
1746 ~RXON_FILTER_ASSOC_MSK
;
1747 priv
->staging_rxon
.assoc_id
= 0;
1748 iwlcore_commit_rxon(priv
);
1751 void iwl_bss_info_changed(struct ieee80211_hw
*hw
,
1752 struct ieee80211_vif
*vif
,
1753 struct ieee80211_bss_conf
*bss_conf
,
1756 struct iwl_priv
*priv
= hw
->priv
;
1759 IWL_DEBUG_MAC80211(priv
, "changes = 0x%X\n", changes
);
1761 if (!iwl_is_alive(priv
))
1764 mutex_lock(&priv
->mutex
);
1766 if (changes
& BSS_CHANGED_BEACON
&& vif
->type
== NL80211_IFTYPE_AP
) {
1767 dev_kfree_skb(priv
->ibss_beacon
);
1768 priv
->ibss_beacon
= ieee80211_beacon_get(hw
, vif
);
1771 if (changes
& BSS_CHANGED_BEACON_INT
) {
1772 /* TODO: in AP mode, do something to make this take effect */
1775 if (changes
& BSS_CHANGED_BSSID
) {
1776 IWL_DEBUG_MAC80211(priv
, "BSSID %pM\n", bss_conf
->bssid
);
1779 * If there is currently a HW scan going on in the
1780 * background then we need to cancel it else the RXON
1781 * below/in post_associate will fail.
1783 if (iwl_scan_cancel_timeout(priv
, 100)) {
1784 IWL_WARN(priv
, "Aborted scan still in progress after 100ms\n");
1785 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
1786 mutex_unlock(&priv
->mutex
);
1790 /* mac80211 only sets assoc when in STATION mode */
1791 if (vif
->type
== NL80211_IFTYPE_ADHOC
|| bss_conf
->assoc
) {
1792 memcpy(priv
->staging_rxon
.bssid_addr
,
1793 bss_conf
->bssid
, ETH_ALEN
);
1795 /* currently needed in a few places */
1796 memcpy(priv
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
1798 priv
->staging_rxon
.filter_flags
&=
1799 ~RXON_FILTER_ASSOC_MSK
;
1805 * This needs to be after setting the BSSID in case
1806 * mac80211 decides to do both changes at once because
1807 * it will invoke post_associate.
1809 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
1810 changes
& BSS_CHANGED_BEACON
) {
1811 struct sk_buff
*beacon
= ieee80211_beacon_get(hw
, vif
);
1814 iwl_mac_beacon_update(hw
, beacon
);
1817 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
1818 IWL_DEBUG_MAC80211(priv
, "ERP_PREAMBLE %d\n",
1819 bss_conf
->use_short_preamble
);
1820 if (bss_conf
->use_short_preamble
)
1821 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1823 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1826 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
1827 IWL_DEBUG_MAC80211(priv
, "ERP_CTS %d\n", bss_conf
->use_cts_prot
);
1828 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
1829 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
1831 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
1834 if (changes
& BSS_CHANGED_BASIC_RATES
) {
1835 /* XXX use this information
1837 * To do that, remove code from iwl_set_rate() and put something
1841 priv->staging_rxon.ofdm_basic_rates =
1842 bss_conf->basic_rates;
1844 priv->staging_rxon.ofdm_basic_rates =
1845 bss_conf->basic_rates >> 4;
1846 priv->staging_rxon.cck_basic_rates =
1847 bss_conf->basic_rates & 0xF;
1851 if (changes
& BSS_CHANGED_HT
) {
1852 iwl_ht_conf(priv
, vif
);
1854 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1855 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
1858 if (changes
& BSS_CHANGED_ASSOC
) {
1859 IWL_DEBUG_MAC80211(priv
, "ASSOC %d\n", bss_conf
->assoc
);
1860 if (bss_conf
->assoc
) {
1861 priv
->timestamp
= bss_conf
->timestamp
;
1863 iwl_led_associate(priv
);
1865 if (!iwl_is_rfkill(priv
))
1866 priv
->cfg
->ops
->lib
->post_associate(priv
, vif
);
1868 iwl_set_no_assoc(priv
);
1871 if (changes
&& iwl_is_associated(priv
) && bss_conf
->aid
) {
1872 IWL_DEBUG_MAC80211(priv
, "Changes (%#x) while associated\n",
1874 ret
= iwl_send_rxon_assoc(priv
);
1876 /* Sync active_rxon with latest change. */
1877 memcpy((void *)&priv
->active_rxon
,
1878 &priv
->staging_rxon
,
1879 sizeof(struct iwl_rxon_cmd
));
1883 if (changes
& BSS_CHANGED_BEACON_ENABLED
) {
1884 if (vif
->bss_conf
.enable_beacon
) {
1885 memcpy(priv
->staging_rxon
.bssid_addr
,
1886 bss_conf
->bssid
, ETH_ALEN
);
1887 memcpy(priv
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
1888 iwlcore_config_ap(priv
, vif
);
1890 iwl_set_no_assoc(priv
);
1893 if (changes
& BSS_CHANGED_IBSS
) {
1894 ret
= priv
->cfg
->ops
->lib
->manage_ibss_station(priv
, vif
,
1895 bss_conf
->ibss_joined
);
1897 IWL_ERR(priv
, "failed to %s IBSS station %pM\n",
1898 bss_conf
->ibss_joined
? "add" : "remove",
1902 mutex_unlock(&priv
->mutex
);
1904 IWL_DEBUG_MAC80211(priv
, "leave\n");
1906 EXPORT_SYMBOL(iwl_bss_info_changed
);
1908 int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
1910 struct iwl_priv
*priv
= hw
->priv
;
1911 unsigned long flags
;
1914 IWL_DEBUG_MAC80211(priv
, "enter\n");
1916 if (!iwl_is_ready_rf(priv
)) {
1917 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1921 spin_lock_irqsave(&priv
->lock
, flags
);
1923 if (priv
->ibss_beacon
)
1924 dev_kfree_skb(priv
->ibss_beacon
);
1926 priv
->ibss_beacon
= skb
;
1928 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
1929 priv
->timestamp
= le64_to_cpu(timestamp
);
1931 IWL_DEBUG_MAC80211(priv
, "leave\n");
1932 spin_unlock_irqrestore(&priv
->lock
, flags
);
1934 priv
->cfg
->ops
->lib
->post_associate(priv
, priv
->vif
);
1938 EXPORT_SYMBOL(iwl_mac_beacon_update
);
1940 static int iwl_set_mode(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
1942 iwl_connection_init_rx_config(priv
, vif
);
1944 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1945 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
1947 return iwlcore_commit_rxon(priv
);
1950 int iwl_mac_add_interface(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1952 struct iwl_priv
*priv
= hw
->priv
;
1955 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1956 vif
->type
, vif
->addr
);
1958 mutex_lock(&priv
->mutex
);
1960 if (WARN_ON(!iwl_is_ready_rf(priv
))) {
1966 IWL_DEBUG_MAC80211(priv
, "leave - vif != NULL\n");
1972 priv
->iw_mode
= vif
->type
;
1974 err
= iwl_set_mode(priv
, vif
);
1982 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1984 mutex_unlock(&priv
->mutex
);
1986 IWL_DEBUG_MAC80211(priv
, "leave\n");
1989 EXPORT_SYMBOL(iwl_mac_add_interface
);
1991 void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
1992 struct ieee80211_vif
*vif
)
1994 struct iwl_priv
*priv
= hw
->priv
;
1996 IWL_DEBUG_MAC80211(priv
, "enter\n");
1998 mutex_lock(&priv
->mutex
);
2000 if (iwl_is_ready_rf(priv
)) {
2001 iwl_scan_cancel_timeout(priv
, 100);
2002 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2003 iwlcore_commit_rxon(priv
);
2005 if (priv
->vif
== vif
) {
2007 if (priv
->scan_vif
== vif
) {
2008 ieee80211_scan_completed(priv
->hw
, true);
2009 priv
->scan_vif
= NULL
;
2010 priv
->scan_request
= NULL
;
2012 memset(priv
->bssid
, 0, ETH_ALEN
);
2014 mutex_unlock(&priv
->mutex
);
2016 IWL_DEBUG_MAC80211(priv
, "leave\n");
2019 EXPORT_SYMBOL(iwl_mac_remove_interface
);
2022 * iwl_mac_config - mac80211 config callback
2024 int iwl_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2026 struct iwl_priv
*priv
= hw
->priv
;
2027 const struct iwl_channel_info
*ch_info
;
2028 struct ieee80211_conf
*conf
= &hw
->conf
;
2029 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
2030 unsigned long flags
= 0;
2033 int scan_active
= 0;
2035 mutex_lock(&priv
->mutex
);
2037 IWL_DEBUG_MAC80211(priv
, "enter to channel %d changed 0x%X\n",
2038 conf
->channel
->hw_value
, changed
);
2040 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2041 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2043 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
2046 if (changed
& (IEEE80211_CONF_CHANGE_SMPS
|
2047 IEEE80211_CONF_CHANGE_CHANNEL
)) {
2048 /* mac80211 uses static for non-HT which is what we want */
2049 priv
->current_ht_config
.smps
= conf
->smps_mode
;
2052 * Recalculate chain counts.
2054 * If monitor mode is enabled then mac80211 will
2055 * set up the SM PS mode to OFF if an HT channel is
2058 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2059 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2062 /* during scanning mac80211 will delay channel setting until
2063 * scan finish with changed = 0
2065 if (!changed
|| (changed
& IEEE80211_CONF_CHANGE_CHANNEL
)) {
2069 ch
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
2070 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
, ch
);
2071 if (!is_channel_valid(ch_info
)) {
2072 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
2077 spin_lock_irqsave(&priv
->lock
, flags
);
2079 /* Configure HT40 channels */
2080 ht_conf
->is_ht
= conf_is_ht(conf
);
2081 if (ht_conf
->is_ht
) {
2082 if (conf_is_ht40_minus(conf
)) {
2083 ht_conf
->extension_chan_offset
=
2084 IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
2085 ht_conf
->is_40mhz
= true;
2086 } else if (conf_is_ht40_plus(conf
)) {
2087 ht_conf
->extension_chan_offset
=
2088 IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
2089 ht_conf
->is_40mhz
= true;
2091 ht_conf
->extension_chan_offset
=
2092 IEEE80211_HT_PARAM_CHA_SEC_NONE
;
2093 ht_conf
->is_40mhz
= false;
2096 ht_conf
->is_40mhz
= false;
2097 /* Default to no protection. Protection mode will later be set
2098 * from BSS config in iwl_ht_conf */
2099 ht_conf
->ht_protection
= IEEE80211_HT_OP_MODE_PROTECTION_NONE
;
2101 /* if we are switching from ht to 2.4 clear flags
2102 * from any ht related info since 2.4 does not
2104 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != ch
))
2105 priv
->staging_rxon
.flags
= 0;
2107 iwl_set_rxon_channel(priv
, conf
->channel
);
2108 iwl_set_rxon_ht(priv
, ht_conf
);
2110 iwl_set_flags_for_band(priv
, conf
->channel
->band
, priv
->vif
);
2111 spin_unlock_irqrestore(&priv
->lock
, flags
);
2113 if (priv
->cfg
->ops
->lib
->update_bcast_station
)
2114 ret
= priv
->cfg
->ops
->lib
->update_bcast_station(priv
);
2117 /* The list of supported rates and rate mask can be different
2118 * for each band; since the band may have changed, reset
2119 * the rate mask to what mac80211 lists */
2123 if (changed
& (IEEE80211_CONF_CHANGE_PS
|
2124 IEEE80211_CONF_CHANGE_IDLE
)) {
2125 ret
= iwl_power_update_mode(priv
, false);
2127 IWL_DEBUG_MAC80211(priv
, "Error setting sleep level\n");
2130 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
2131 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
2132 priv
->tx_power_user_lmt
, conf
->power_level
);
2134 iwl_set_tx_power(priv
, conf
->power_level
, false);
2137 if (changed
& IEEE80211_CONF_CHANGE_QOS
) {
2138 bool qos_active
= !!(conf
->flags
& IEEE80211_CONF_QOS
);
2140 spin_lock_irqsave(&priv
->lock
, flags
);
2141 priv
->qos_data
.qos_active
= qos_active
;
2142 iwl_update_qos(priv
);
2143 spin_unlock_irqrestore(&priv
->lock
, flags
);
2146 if (!iwl_is_ready(priv
)) {
2147 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2154 if (memcmp(&priv
->active_rxon
,
2155 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
2156 iwlcore_commit_rxon(priv
);
2158 IWL_DEBUG_INFO(priv
, "Not re-sending same RXON configuration.\n");
2162 IWL_DEBUG_MAC80211(priv
, "leave\n");
2163 mutex_unlock(&priv
->mutex
);
2166 EXPORT_SYMBOL(iwl_mac_config
);
2168 void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
2170 struct iwl_priv
*priv
= hw
->priv
;
2171 unsigned long flags
;
2173 mutex_lock(&priv
->mutex
);
2174 IWL_DEBUG_MAC80211(priv
, "enter\n");
2176 spin_lock_irqsave(&priv
->lock
, flags
);
2177 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_config
));
2178 spin_unlock_irqrestore(&priv
->lock
, flags
);
2180 spin_lock_irqsave(&priv
->lock
, flags
);
2182 /* new association get rid of ibss beacon skb */
2183 if (priv
->ibss_beacon
)
2184 dev_kfree_skb(priv
->ibss_beacon
);
2186 priv
->ibss_beacon
= NULL
;
2188 priv
->timestamp
= 0;
2190 spin_unlock_irqrestore(&priv
->lock
, flags
);
2192 if (!iwl_is_ready_rf(priv
)) {
2193 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2194 mutex_unlock(&priv
->mutex
);
2198 /* we are restarting association process
2199 * clear RXON_FILTER_ASSOC_MSK bit
2201 iwl_scan_cancel_timeout(priv
, 100);
2202 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2203 iwlcore_commit_rxon(priv
);
2207 mutex_unlock(&priv
->mutex
);
2209 IWL_DEBUG_MAC80211(priv
, "leave\n");
2211 EXPORT_SYMBOL(iwl_mac_reset_tsf
);
2213 int iwl_alloc_txq_mem(struct iwl_priv
*priv
)
2216 priv
->txq
= kzalloc(
2217 sizeof(struct iwl_tx_queue
) * priv
->cfg
->num_of_queues
,
2220 IWL_ERR(priv
, "Not enough memory for txq\n");
2225 EXPORT_SYMBOL(iwl_alloc_txq_mem
);
2227 void iwl_free_txq_mem(struct iwl_priv
*priv
)
2232 EXPORT_SYMBOL(iwl_free_txq_mem
);
2234 #ifdef CONFIG_IWLWIFI_DEBUGFS
2236 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2238 void iwl_reset_traffic_log(struct iwl_priv
*priv
)
2240 priv
->tx_traffic_idx
= 0;
2241 priv
->rx_traffic_idx
= 0;
2242 if (priv
->tx_traffic
)
2243 memset(priv
->tx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
2244 if (priv
->rx_traffic
)
2245 memset(priv
->rx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
2248 int iwl_alloc_traffic_mem(struct iwl_priv
*priv
)
2250 u32 traffic_size
= IWL_TRAFFIC_DUMP_SIZE
;
2252 if (iwl_debug_level
& IWL_DL_TX
) {
2253 if (!priv
->tx_traffic
) {
2255 kzalloc(traffic_size
, GFP_KERNEL
);
2256 if (!priv
->tx_traffic
)
2260 if (iwl_debug_level
& IWL_DL_RX
) {
2261 if (!priv
->rx_traffic
) {
2263 kzalloc(traffic_size
, GFP_KERNEL
);
2264 if (!priv
->rx_traffic
)
2268 iwl_reset_traffic_log(priv
);
2271 EXPORT_SYMBOL(iwl_alloc_traffic_mem
);
2273 void iwl_free_traffic_mem(struct iwl_priv
*priv
)
2275 kfree(priv
->tx_traffic
);
2276 priv
->tx_traffic
= NULL
;
2278 kfree(priv
->rx_traffic
);
2279 priv
->rx_traffic
= NULL
;
2281 EXPORT_SYMBOL(iwl_free_traffic_mem
);
2283 void iwl_dbg_log_tx_data_frame(struct iwl_priv
*priv
,
2284 u16 length
, struct ieee80211_hdr
*header
)
2289 if (likely(!(iwl_debug_level
& IWL_DL_TX
)))
2292 if (!priv
->tx_traffic
)
2295 fc
= header
->frame_control
;
2296 if (ieee80211_is_data(fc
)) {
2297 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
2298 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
2299 memcpy((priv
->tx_traffic
+
2300 (priv
->tx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
2302 priv
->tx_traffic_idx
=
2303 (priv
->tx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
2306 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame
);
2308 void iwl_dbg_log_rx_data_frame(struct iwl_priv
*priv
,
2309 u16 length
, struct ieee80211_hdr
*header
)
2314 if (likely(!(iwl_debug_level
& IWL_DL_RX
)))
2317 if (!priv
->rx_traffic
)
2320 fc
= header
->frame_control
;
2321 if (ieee80211_is_data(fc
)) {
2322 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
2323 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
2324 memcpy((priv
->rx_traffic
+
2325 (priv
->rx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
2327 priv
->rx_traffic_idx
=
2328 (priv
->rx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
2331 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame
);
2333 const char *get_mgmt_string(int cmd
)
2336 IWL_CMD(MANAGEMENT_ASSOC_REQ
);
2337 IWL_CMD(MANAGEMENT_ASSOC_RESP
);
2338 IWL_CMD(MANAGEMENT_REASSOC_REQ
);
2339 IWL_CMD(MANAGEMENT_REASSOC_RESP
);
2340 IWL_CMD(MANAGEMENT_PROBE_REQ
);
2341 IWL_CMD(MANAGEMENT_PROBE_RESP
);
2342 IWL_CMD(MANAGEMENT_BEACON
);
2343 IWL_CMD(MANAGEMENT_ATIM
);
2344 IWL_CMD(MANAGEMENT_DISASSOC
);
2345 IWL_CMD(MANAGEMENT_AUTH
);
2346 IWL_CMD(MANAGEMENT_DEAUTH
);
2347 IWL_CMD(MANAGEMENT_ACTION
);
2354 const char *get_ctrl_string(int cmd
)
2357 IWL_CMD(CONTROL_BACK_REQ
);
2358 IWL_CMD(CONTROL_BACK
);
2359 IWL_CMD(CONTROL_PSPOLL
);
2360 IWL_CMD(CONTROL_RTS
);
2361 IWL_CMD(CONTROL_CTS
);
2362 IWL_CMD(CONTROL_ACK
);
2363 IWL_CMD(CONTROL_CFEND
);
2364 IWL_CMD(CONTROL_CFENDACK
);
2371 void iwl_clear_traffic_stats(struct iwl_priv
*priv
)
2373 memset(&priv
->tx_stats
, 0, sizeof(struct traffic_stats
));
2374 memset(&priv
->rx_stats
, 0, sizeof(struct traffic_stats
));
2379 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2380 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2381 * Use debugFs to display the rx/rx_statistics
2382 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2383 * information will be recorded, but DATA pkt still will be recorded
2384 * for the reason of iwl_led.c need to control the led blinking based on
2385 * number of tx and rx data.
2388 void iwl_update_stats(struct iwl_priv
*priv
, bool is_tx
, __le16 fc
, u16 len
)
2390 struct traffic_stats
*stats
;
2393 stats
= &priv
->tx_stats
;
2395 stats
= &priv
->rx_stats
;
2397 if (ieee80211_is_mgmt(fc
)) {
2398 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
2399 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
2400 stats
->mgmt
[MANAGEMENT_ASSOC_REQ
]++;
2402 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP
):
2403 stats
->mgmt
[MANAGEMENT_ASSOC_RESP
]++;
2405 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
2406 stats
->mgmt
[MANAGEMENT_REASSOC_REQ
]++;
2408 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP
):
2409 stats
->mgmt
[MANAGEMENT_REASSOC_RESP
]++;
2411 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
):
2412 stats
->mgmt
[MANAGEMENT_PROBE_REQ
]++;
2414 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP
):
2415 stats
->mgmt
[MANAGEMENT_PROBE_RESP
]++;
2417 case cpu_to_le16(IEEE80211_STYPE_BEACON
):
2418 stats
->mgmt
[MANAGEMENT_BEACON
]++;
2420 case cpu_to_le16(IEEE80211_STYPE_ATIM
):
2421 stats
->mgmt
[MANAGEMENT_ATIM
]++;
2423 case cpu_to_le16(IEEE80211_STYPE_DISASSOC
):
2424 stats
->mgmt
[MANAGEMENT_DISASSOC
]++;
2426 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
2427 stats
->mgmt
[MANAGEMENT_AUTH
]++;
2429 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
2430 stats
->mgmt
[MANAGEMENT_DEAUTH
]++;
2432 case cpu_to_le16(IEEE80211_STYPE_ACTION
):
2433 stats
->mgmt
[MANAGEMENT_ACTION
]++;
2436 } else if (ieee80211_is_ctl(fc
)) {
2437 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
2438 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ
):
2439 stats
->ctrl
[CONTROL_BACK_REQ
]++;
2441 case cpu_to_le16(IEEE80211_STYPE_BACK
):
2442 stats
->ctrl
[CONTROL_BACK
]++;
2444 case cpu_to_le16(IEEE80211_STYPE_PSPOLL
):
2445 stats
->ctrl
[CONTROL_PSPOLL
]++;
2447 case cpu_to_le16(IEEE80211_STYPE_RTS
):
2448 stats
->ctrl
[CONTROL_RTS
]++;
2450 case cpu_to_le16(IEEE80211_STYPE_CTS
):
2451 stats
->ctrl
[CONTROL_CTS
]++;
2453 case cpu_to_le16(IEEE80211_STYPE_ACK
):
2454 stats
->ctrl
[CONTROL_ACK
]++;
2456 case cpu_to_le16(IEEE80211_STYPE_CFEND
):
2457 stats
->ctrl
[CONTROL_CFEND
]++;
2459 case cpu_to_le16(IEEE80211_STYPE_CFENDACK
):
2460 stats
->ctrl
[CONTROL_CFENDACK
]++;
2466 stats
->data_bytes
+= len
;
2468 iwl_leds_background(priv
);
2470 EXPORT_SYMBOL(iwl_update_stats
);
2473 static const char *get_csr_string(int cmd
)
2476 IWL_CMD(CSR_HW_IF_CONFIG_REG
);
2477 IWL_CMD(CSR_INT_COALESCING
);
2479 IWL_CMD(CSR_INT_MASK
);
2480 IWL_CMD(CSR_FH_INT_STATUS
);
2481 IWL_CMD(CSR_GPIO_IN
);
2483 IWL_CMD(CSR_GP_CNTRL
);
2484 IWL_CMD(CSR_HW_REV
);
2485 IWL_CMD(CSR_EEPROM_REG
);
2486 IWL_CMD(CSR_EEPROM_GP
);
2487 IWL_CMD(CSR_OTP_GP_REG
);
2488 IWL_CMD(CSR_GIO_REG
);
2489 IWL_CMD(CSR_GP_UCODE_REG
);
2490 IWL_CMD(CSR_GP_DRIVER_REG
);
2491 IWL_CMD(CSR_UCODE_DRV_GP1
);
2492 IWL_CMD(CSR_UCODE_DRV_GP2
);
2493 IWL_CMD(CSR_LED_REG
);
2494 IWL_CMD(CSR_DRAM_INT_TBL_REG
);
2495 IWL_CMD(CSR_GIO_CHICKEN_BITS
);
2496 IWL_CMD(CSR_ANA_PLL_CFG
);
2497 IWL_CMD(CSR_HW_REV_WA_REG
);
2498 IWL_CMD(CSR_DBG_HPET_MEM_REG
);
2505 void iwl_dump_csr(struct iwl_priv
*priv
)
2509 CSR_HW_IF_CONFIG_REG
,
2527 CSR_DRAM_INT_TBL_REG
,
2528 CSR_GIO_CHICKEN_BITS
,
2531 CSR_DBG_HPET_MEM_REG
2533 IWL_ERR(priv
, "CSR values:\n");
2534 IWL_ERR(priv
, "(2nd byte of CSR_INT_COALESCING is "
2535 "CSR_INT_PERIODIC_REG)\n");
2536 for (i
= 0; i
< ARRAY_SIZE(csr_tbl
); i
++) {
2537 IWL_ERR(priv
, " %25s: 0X%08x\n",
2538 get_csr_string(csr_tbl
[i
]),
2539 iwl_read32(priv
, csr_tbl
[i
]));
2542 EXPORT_SYMBOL(iwl_dump_csr
);
2544 static const char *get_fh_string(int cmd
)
2547 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG
);
2548 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG
);
2549 IWL_CMD(FH_RSCSR_CHNL0_WPTR
);
2550 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG
);
2551 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG
);
2552 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG
);
2553 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV
);
2554 IWL_CMD(FH_TSSR_TX_STATUS_REG
);
2555 IWL_CMD(FH_TSSR_TX_ERROR_REG
);
2562 int iwl_dump_fh(struct iwl_priv
*priv
, char **buf
, bool display
)
2565 #ifdef CONFIG_IWLWIFI_DEBUG
2570 FH_RSCSR_CHNL0_STTS_WPTR_REG
,
2571 FH_RSCSR_CHNL0_RBDCB_BASE_REG
,
2572 FH_RSCSR_CHNL0_WPTR
,
2573 FH_MEM_RCSR_CHNL0_CONFIG_REG
,
2574 FH_MEM_RSSR_SHARED_CTRL_REG
,
2575 FH_MEM_RSSR_RX_STATUS_REG
,
2576 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV
,
2577 FH_TSSR_TX_STATUS_REG
,
2578 FH_TSSR_TX_ERROR_REG
2580 #ifdef CONFIG_IWLWIFI_DEBUG
2582 bufsz
= ARRAY_SIZE(fh_tbl
) * 48 + 40;
2583 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
2586 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2587 "FH register values:\n");
2588 for (i
= 0; i
< ARRAY_SIZE(fh_tbl
); i
++) {
2589 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2591 get_fh_string(fh_tbl
[i
]),
2592 iwl_read_direct32(priv
, fh_tbl
[i
]));
2597 IWL_ERR(priv
, "FH register values:\n");
2598 for (i
= 0; i
< ARRAY_SIZE(fh_tbl
); i
++) {
2599 IWL_ERR(priv
, " %34s: 0X%08x\n",
2600 get_fh_string(fh_tbl
[i
]),
2601 iwl_read_direct32(priv
, fh_tbl
[i
]));
2605 EXPORT_SYMBOL(iwl_dump_fh
);
2607 static void iwl_force_rf_reset(struct iwl_priv
*priv
)
2609 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2612 if (!iwl_is_associated(priv
)) {
2613 IWL_DEBUG_SCAN(priv
, "force reset rejected: not associated\n");
2617 * There is no easy and better way to force reset the radio,
2618 * the only known method is switching channel which will force to
2619 * reset and tune the radio.
2620 * Use internal short scan (single channel) operation to should
2621 * achieve this objective.
2622 * Driver should reset the radio when number of consecutive missed
2623 * beacon, or any other uCode error condition detected.
2625 IWL_DEBUG_INFO(priv
, "perform radio reset.\n");
2626 iwl_internal_short_hw_scan(priv
);
2630 int iwl_force_reset(struct iwl_priv
*priv
, int mode
, bool external
)
2632 struct iwl_force_reset
*force_reset
;
2634 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2637 if (mode
>= IWL_MAX_FORCE_RESET
) {
2638 IWL_DEBUG_INFO(priv
, "invalid reset request.\n");
2641 force_reset
= &priv
->force_reset
[mode
];
2642 force_reset
->reset_request_count
++;
2644 if (force_reset
->last_force_reset_jiffies
&&
2645 time_after(force_reset
->last_force_reset_jiffies
+
2646 force_reset
->reset_duration
, jiffies
)) {
2647 IWL_DEBUG_INFO(priv
, "force reset rejected\n");
2648 force_reset
->reset_reject_count
++;
2652 force_reset
->reset_success_count
++;
2653 force_reset
->last_force_reset_jiffies
= jiffies
;
2654 IWL_DEBUG_INFO(priv
, "perform force reset (%d)\n", mode
);
2657 iwl_force_rf_reset(priv
);
2661 * if the request is from external(ex: debugfs),
2662 * then always perform the request in regardless the module
2664 * if the request is from internal (uCode error or driver
2665 * detect failure), then fw_restart module parameter
2666 * need to be check before performing firmware reload
2668 if (!external
&& !priv
->cfg
->mod_params
->restart_fw
) {
2669 IWL_DEBUG_INFO(priv
, "Cancel firmware reload based on "
2670 "module parameter setting\n");
2673 IWL_ERR(priv
, "On demand firmware reload\n");
2674 /* Set the FW error flag -- cleared on iwl_down */
2675 set_bit(STATUS_FW_ERROR
, &priv
->status
);
2676 wake_up_interruptible(&priv
->wait_command_queue
);
2678 * Keep the restart process from trying to send host
2679 * commands by clearing the INIT status bit
2681 clear_bit(STATUS_READY
, &priv
->status
);
2682 queue_work(priv
->workqueue
, &priv
->restart
);
2687 EXPORT_SYMBOL(iwl_force_reset
);
2690 * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover
2692 * During normal condition (no queue is stuck), the timer is continually set to
2693 * execute every monitor_recover_period milliseconds after the last timer
2694 * expired. When the queue read_ptr is at the same place, the timer is
2695 * shorten to 100mSecs. This is
2696 * 1) to reduce the chance that the read_ptr may wrap around (not stuck)
2697 * 2) to detect the stuck queues quicker before the station and AP can
2698 * disassociate each other.
2700 * This function monitors all the tx queues and recover from it if any
2701 * of the queues are stuck.
2702 * 1. It first check the cmd queue for stuck conditions. If it is stuck,
2703 * it will recover by resetting the firmware and return.
2704 * 2. Then, it checks for station association. If it associates it will check
2705 * other queues. If any queue is stuck, it will recover by resetting
2707 * Note: It the number of times the queue read_ptr to be at the same place to
2708 * be MAX_REPEAT+1 in order to consider to be stuck.
2711 * The maximum number of times the read pointer of the tx queue at the
2712 * same place without considering to be stuck.
2714 #define MAX_REPEAT (2)
2715 static int iwl_check_stuck_queue(struct iwl_priv
*priv
, int cnt
)
2717 struct iwl_tx_queue
*txq
;
2718 struct iwl_queue
*q
;
2720 txq
= &priv
->txq
[cnt
];
2722 /* queue is empty, skip */
2723 if (q
->read_ptr
!= q
->write_ptr
) {
2724 if (q
->read_ptr
== q
->last_read_ptr
) {
2725 /* a queue has not been read from last time */
2726 if (q
->repeat_same_read_ptr
> MAX_REPEAT
) {
2728 "queue %d stuck %d time. Fw reload.\n",
2729 q
->id
, q
->repeat_same_read_ptr
);
2730 q
->repeat_same_read_ptr
= 0;
2731 iwl_force_reset(priv
, IWL_FW_RESET
, false);
2733 q
->repeat_same_read_ptr
++;
2734 IWL_DEBUG_RADIO(priv
,
2735 "queue %d, not read %d time\n",
2737 q
->repeat_same_read_ptr
);
2738 mod_timer(&priv
->monitor_recover
, jiffies
+
2739 msecs_to_jiffies(IWL_ONE_HUNDRED_MSECS
));
2743 q
->last_read_ptr
= q
->read_ptr
;
2744 q
->repeat_same_read_ptr
= 0;
2750 void iwl_bg_monitor_recover(unsigned long data
)
2752 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
2755 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2758 /* monitor and check for stuck cmd queue */
2759 if (iwl_check_stuck_queue(priv
, IWL_CMD_QUEUE_NUM
))
2762 /* monitor and check for other stuck queues */
2763 if (iwl_is_associated(priv
)) {
2764 for (cnt
= 0; cnt
< priv
->hw_params
.max_txq_num
; cnt
++) {
2765 /* skip as we already checked the command queue */
2766 if (cnt
== IWL_CMD_QUEUE_NUM
)
2768 if (iwl_check_stuck_queue(priv
, cnt
))
2773 * Reschedule the timer to occur in
2774 * priv->cfg->monitor_recover_period
2776 mod_timer(&priv
->monitor_recover
,
2777 jiffies
+ msecs_to_jiffies(priv
->cfg
->monitor_recover_period
));
2779 EXPORT_SYMBOL(iwl_bg_monitor_recover
);
2783 * extended beacon time format
2784 * time in usec will be changed into a 32-bit value in extended:internal format
2785 * the extended part is the beacon counts
2786 * the internal part is the time in usec within one beacon interval
2788 u32
iwl_usecs_to_beacons(struct iwl_priv
*priv
, u32 usec
, u32 beacon_interval
)
2792 u32 interval
= beacon_interval
* TIME_UNIT
;
2794 if (!interval
|| !usec
)
2797 quot
= (usec
/ interval
) &
2798 (iwl_beacon_time_mask_high(priv
,
2799 priv
->hw_params
.beacon_time_tsf_bits
) >>
2800 priv
->hw_params
.beacon_time_tsf_bits
);
2801 rem
= (usec
% interval
) & iwl_beacon_time_mask_low(priv
,
2802 priv
->hw_params
.beacon_time_tsf_bits
);
2804 return (quot
<< priv
->hw_params
.beacon_time_tsf_bits
) + rem
;
2806 EXPORT_SYMBOL(iwl_usecs_to_beacons
);
2808 /* base is usually what we get from ucode with each received frame,
2809 * the same as HW timer counter counting down
2811 __le32
iwl_add_beacon_time(struct iwl_priv
*priv
, u32 base
,
2812 u32 addon
, u32 beacon_interval
)
2814 u32 base_low
= base
& iwl_beacon_time_mask_low(priv
,
2815 priv
->hw_params
.beacon_time_tsf_bits
);
2816 u32 addon_low
= addon
& iwl_beacon_time_mask_low(priv
,
2817 priv
->hw_params
.beacon_time_tsf_bits
);
2818 u32 interval
= beacon_interval
* TIME_UNIT
;
2819 u32 res
= (base
& iwl_beacon_time_mask_high(priv
,
2820 priv
->hw_params
.beacon_time_tsf_bits
)) +
2821 (addon
& iwl_beacon_time_mask_high(priv
,
2822 priv
->hw_params
.beacon_time_tsf_bits
));
2824 if (base_low
> addon_low
)
2825 res
+= base_low
- addon_low
;
2826 else if (base_low
< addon_low
) {
2827 res
+= interval
+ base_low
- addon_low
;
2828 res
+= (1 << priv
->hw_params
.beacon_time_tsf_bits
);
2830 res
+= (1 << priv
->hw_params
.beacon_time_tsf_bits
);
2832 return cpu_to_le32(res
);
2834 EXPORT_SYMBOL(iwl_add_beacon_time
);
2838 int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2840 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
2843 * This function is called when system goes into suspend state
2844 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2845 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2846 * it will not call apm_ops.stop() to stop the DMA operation.
2847 * Calling apm_ops.stop here to make sure we stop the DMA.
2849 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2851 pci_save_state(pdev
);
2852 pci_disable_device(pdev
);
2853 pci_set_power_state(pdev
, PCI_D3hot
);
2857 EXPORT_SYMBOL(iwl_pci_suspend
);
2859 int iwl_pci_resume(struct pci_dev
*pdev
)
2861 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
2863 bool hw_rfkill
= false;
2866 * We disable the RETRY_TIMEOUT register (0x41) to keep
2867 * PCI Tx retries from interfering with C3 CPU state.
2869 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
2871 pci_set_power_state(pdev
, PCI_D0
);
2872 ret
= pci_enable_device(pdev
);
2875 pci_restore_state(pdev
);
2876 iwl_enable_interrupts(priv
);
2878 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
2879 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
2883 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2885 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2887 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rfkill
);
2891 EXPORT_SYMBOL(iwl_pci_resume
);
2893 #endif /* CONFIG_PM */