1 /******************************************************************************
5 * Copyright(c) 2008 - 2011 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"
38 #include "iwl-debug.h"
41 #include "iwl-power.h"
43 #include "iwl-helpers.h"
46 MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
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 u32 iwlegacy_debug_level
;
72 EXPORT_SYMBOL(iwlegacy_debug_level
);
74 const u8 iwlegacy_bcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
75 EXPORT_SYMBOL(iwlegacy_bcast_addr
);
78 /* This function both allocates and initializes hw and priv. */
79 struct ieee80211_hw
*iwl_legacy_alloc_all(struct iwl_cfg
*cfg
)
81 struct iwl_priv
*priv
;
82 /* mac80211 allocates memory for this device instance, including
83 * space for this driver's private structure */
84 struct ieee80211_hw
*hw
;
86 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
),
87 cfg
->ops
->ieee80211_ops
);
89 pr_err("%s: Can not allocate network device\n",
100 EXPORT_SYMBOL(iwl_legacy_alloc_all
);
102 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
103 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
104 static void iwl_legacy_init_ht_hw_capab(const struct iwl_priv
*priv
,
105 struct ieee80211_sta_ht_cap
*ht_info
,
106 enum ieee80211_band band
)
108 u16 max_bit_rate
= 0;
109 u8 rx_chains_num
= priv
->hw_params
.rx_chains_num
;
110 u8 tx_chains_num
= priv
->hw_params
.tx_chains_num
;
113 memset(&ht_info
->mcs
, 0, sizeof(ht_info
->mcs
));
115 ht_info
->ht_supported
= true;
117 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_20
;
118 max_bit_rate
= MAX_BIT_RATE_20_MHZ
;
119 if (priv
->hw_params
.ht40_channel
& BIT(band
)) {
120 ht_info
->cap
|= IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
121 ht_info
->cap
|= IEEE80211_HT_CAP_SGI_40
;
122 ht_info
->mcs
.rx_mask
[4] = 0x01;
123 max_bit_rate
= MAX_BIT_RATE_40_MHZ
;
126 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
127 ht_info
->cap
|= IEEE80211_HT_CAP_MAX_AMSDU
;
129 ht_info
->ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
130 ht_info
->ampdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
132 ht_info
->mcs
.rx_mask
[0] = 0xFF;
133 if (rx_chains_num
>= 2)
134 ht_info
->mcs
.rx_mask
[1] = 0xFF;
135 if (rx_chains_num
>= 3)
136 ht_info
->mcs
.rx_mask
[2] = 0xFF;
138 /* Highest supported Rx data rate */
139 max_bit_rate
*= rx_chains_num
;
140 WARN_ON(max_bit_rate
& ~IEEE80211_HT_MCS_RX_HIGHEST_MASK
);
141 ht_info
->mcs
.rx_highest
= cpu_to_le16(max_bit_rate
);
143 /* Tx MCS capabilities */
144 ht_info
->mcs
.tx_params
= IEEE80211_HT_MCS_TX_DEFINED
;
145 if (tx_chains_num
!= rx_chains_num
) {
146 ht_info
->mcs
.tx_params
|= IEEE80211_HT_MCS_TX_RX_DIFF
;
147 ht_info
->mcs
.tx_params
|= ((tx_chains_num
- 1) <<
148 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
);
153 * iwl_legacy_init_geos - Initialize mac80211's geo/channel info based from eeprom
155 int iwl_legacy_init_geos(struct iwl_priv
*priv
)
157 struct iwl_channel_info
*ch
;
158 struct ieee80211_supported_band
*sband
;
159 struct ieee80211_channel
*channels
;
160 struct ieee80211_channel
*geo_ch
;
161 struct ieee80211_rate
*rates
;
164 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
||
165 priv
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
) {
166 IWL_DEBUG_INFO(priv
, "Geography modes already initialized.\n");
167 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
171 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
172 priv
->channel_count
, GFP_KERNEL
);
176 rates
= kzalloc((sizeof(struct ieee80211_rate
) * IWL_RATE_COUNT_LEGACY
),
183 /* 5.2GHz channels start after the 2.4GHz channels */
184 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
185 sband
->channels
= &channels
[ARRAY_SIZE(iwlegacy_eeprom_band_1
)];
187 sband
->bitrates
= &rates
[IWL_FIRST_OFDM_RATE
];
188 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
- IWL_FIRST_OFDM_RATE
;
190 if (priv
->cfg
->sku
& IWL_SKU_N
)
191 iwl_legacy_init_ht_hw_capab(priv
, &sband
->ht_cap
,
192 IEEE80211_BAND_5GHZ
);
194 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
195 sband
->channels
= channels
;
197 sband
->bitrates
= rates
;
198 sband
->n_bitrates
= IWL_RATE_COUNT_LEGACY
;
200 if (priv
->cfg
->sku
& IWL_SKU_N
)
201 iwl_legacy_init_ht_hw_capab(priv
, &sband
->ht_cap
,
202 IEEE80211_BAND_2GHZ
);
204 priv
->ieee_channels
= channels
;
205 priv
->ieee_rates
= rates
;
207 for (i
= 0; i
< priv
->channel_count
; i
++) {
208 ch
= &priv
->channel_info
[i
];
210 if (!iwl_legacy_is_channel_valid(ch
))
213 if (iwl_legacy_is_channel_a_band(ch
))
214 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
216 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
218 geo_ch
= &sband
->channels
[sband
->n_channels
++];
220 geo_ch
->center_freq
=
221 ieee80211_channel_to_frequency(ch
->channel
, ch
->band
);
222 geo_ch
->max_power
= ch
->max_power_avg
;
223 geo_ch
->max_antenna_gain
= 0xff;
224 geo_ch
->hw_value
= ch
->channel
;
226 if (iwl_legacy_is_channel_valid(ch
)) {
227 if (!(ch
->flags
& EEPROM_CHANNEL_IBSS
))
228 geo_ch
->flags
|= IEEE80211_CHAN_NO_IBSS
;
230 if (!(ch
->flags
& EEPROM_CHANNEL_ACTIVE
))
231 geo_ch
->flags
|= IEEE80211_CHAN_PASSIVE_SCAN
;
233 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
234 geo_ch
->flags
|= IEEE80211_CHAN_RADAR
;
236 geo_ch
->flags
|= ch
->ht40_extension_channel
;
238 if (ch
->max_power_avg
> priv
->tx_power_device_lmt
)
239 priv
->tx_power_device_lmt
= ch
->max_power_avg
;
241 geo_ch
->flags
|= IEEE80211_CHAN_DISABLED
;
244 IWL_DEBUG_INFO(priv
, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
245 ch
->channel
, geo_ch
->center_freq
,
246 iwl_legacy_is_channel_a_band(ch
) ? "5.2" : "2.4",
247 geo_ch
->flags
& IEEE80211_CHAN_DISABLED
?
248 "restricted" : "valid",
252 if ((priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
== 0) &&
253 priv
->cfg
->sku
& IWL_SKU_A
) {
254 IWL_INFO(priv
, "Incorrectly detected BG card as ABG. "
255 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
256 priv
->pci_dev
->device
,
257 priv
->pci_dev
->subsystem_device
);
258 priv
->cfg
->sku
&= ~IWL_SKU_A
;
261 IWL_INFO(priv
, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
262 priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
,
263 priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
);
265 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
269 EXPORT_SYMBOL(iwl_legacy_init_geos
);
272 * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos
274 void iwl_legacy_free_geos(struct iwl_priv
*priv
)
276 kfree(priv
->ieee_channels
);
277 kfree(priv
->ieee_rates
);
278 clear_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
280 EXPORT_SYMBOL(iwl_legacy_free_geos
);
282 static bool iwl_legacy_is_channel_extension(struct iwl_priv
*priv
,
283 enum ieee80211_band band
,
284 u16 channel
, u8 extension_chan_offset
)
286 const struct iwl_channel_info
*ch_info
;
288 ch_info
= iwl_legacy_get_channel_info(priv
, band
, channel
);
289 if (!iwl_legacy_is_channel_valid(ch_info
))
292 if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_ABOVE
)
293 return !(ch_info
->ht40_extension_channel
&
294 IEEE80211_CHAN_NO_HT40PLUS
);
295 else if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
296 return !(ch_info
->ht40_extension_channel
&
297 IEEE80211_CHAN_NO_HT40MINUS
);
302 bool iwl_legacy_is_ht40_tx_allowed(struct iwl_priv
*priv
,
303 struct iwl_rxon_context
*ctx
,
304 struct ieee80211_sta_ht_cap
*ht_cap
)
306 if (!ctx
->ht
.enabled
|| !ctx
->ht
.is_40mhz
)
310 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
311 * the bit will not set if it is pure 40MHz case
313 if (ht_cap
&& !ht_cap
->ht_supported
)
316 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
317 if (priv
->disable_ht40
)
321 return iwl_legacy_is_channel_extension(priv
, priv
->band
,
322 le16_to_cpu(ctx
->staging
.channel
),
323 ctx
->ht
.extension_chan_offset
);
325 EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed
);
327 static u16
iwl_legacy_adjust_beacon_interval(u16 beacon_val
, u16 max_beacon_val
)
333 * If mac80211 hasn't given us a beacon interval, program
334 * the default into the device.
337 return DEFAULT_BEACON_INTERVAL
;
340 * If the beacon interval we obtained from the peer
341 * is too large, we'll have to wake up more often
342 * (and in IBSS case, we'll beacon too much)
344 * For example, if max_beacon_val is 4096, and the
345 * requested beacon interval is 7000, we'll have to
346 * use 3500 to be able to wake up on the beacons.
348 * This could badly influence beacon detection stats.
351 beacon_factor
= (beacon_val
+ max_beacon_val
) / max_beacon_val
;
352 new_val
= beacon_val
/ beacon_factor
;
355 new_val
= max_beacon_val
;
361 iwl_legacy_send_rxon_timing(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
364 s32 interval_tm
, rem
;
365 struct ieee80211_conf
*conf
= NULL
;
367 struct ieee80211_vif
*vif
= ctx
->vif
;
369 conf
= iwl_legacy_ieee80211_get_hw_conf(priv
->hw
);
371 lockdep_assert_held(&priv
->mutex
);
373 memset(&ctx
->timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
375 ctx
->timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
376 ctx
->timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
378 beacon_int
= vif
? vif
->bss_conf
.beacon_int
: 0;
381 * TODO: For IBSS we need to get atim_window from mac80211,
382 * for now just always use 0
384 ctx
->timing
.atim_window
= 0;
386 beacon_int
= iwl_legacy_adjust_beacon_interval(beacon_int
,
387 priv
->hw_params
.max_beacon_itrvl
* TIME_UNIT
);
388 ctx
->timing
.beacon_interval
= cpu_to_le16(beacon_int
);
390 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
391 interval_tm
= beacon_int
* TIME_UNIT
;
392 rem
= do_div(tsf
, interval_tm
);
393 ctx
->timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
395 ctx
->timing
.dtim_period
= vif
? (vif
->bss_conf
.dtim_period
?: 1) : 1;
397 IWL_DEBUG_ASSOC(priv
,
398 "beacon interval %d beacon timer %d beacon tim %d\n",
399 le16_to_cpu(ctx
->timing
.beacon_interval
),
400 le32_to_cpu(ctx
->timing
.beacon_init_val
),
401 le16_to_cpu(ctx
->timing
.atim_window
));
403 return iwl_legacy_send_cmd_pdu(priv
, ctx
->rxon_timing_cmd
,
404 sizeof(ctx
->timing
), &ctx
->timing
);
406 EXPORT_SYMBOL(iwl_legacy_send_rxon_timing
);
409 iwl_legacy_set_rxon_hwcrypto(struct iwl_priv
*priv
,
410 struct iwl_rxon_context
*ctx
,
413 struct iwl_legacy_rxon_cmd
*rxon
= &ctx
->staging
;
416 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
418 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
421 EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto
);
423 /* validate RXON structure is valid */
425 iwl_legacy_check_rxon_cmd(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
427 struct iwl_legacy_rxon_cmd
*rxon
= &ctx
->staging
;
430 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
431 if (rxon
->flags
& RXON_FLG_TGJ_NARROW_BAND_MSK
) {
432 IWL_WARN(priv
, "check 2.4G: wrong narrow\n");
435 if (rxon
->flags
& RXON_FLG_RADAR_DETECT_MSK
) {
436 IWL_WARN(priv
, "check 2.4G: wrong radar\n");
440 if (!(rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
441 IWL_WARN(priv
, "check 5.2G: not short slot!\n");
444 if (rxon
->flags
& RXON_FLG_CCK_MSK
) {
445 IWL_WARN(priv
, "check 5.2G: CCK!\n");
449 if ((rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1) {
450 IWL_WARN(priv
, "mac/bssid mcast!\n");
454 /* make sure basic rates 6Mbps and 1Mbps are supported */
455 if ((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0 &&
456 (rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0) {
457 IWL_WARN(priv
, "neither 1 nor 6 are basic\n");
461 if (le16_to_cpu(rxon
->assoc_id
) > 2007) {
462 IWL_WARN(priv
, "aid > 2007\n");
466 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
467 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
)) {
468 IWL_WARN(priv
, "CCK and short slot\n");
472 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
473 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
)) {
474 IWL_WARN(priv
, "CCK and auto detect");
478 if ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
479 RXON_FLG_TGG_PROTECT_MSK
)) ==
480 RXON_FLG_TGG_PROTECT_MSK
) {
481 IWL_WARN(priv
, "TGg but no auto-detect\n");
486 IWL_WARN(priv
, "Tuning to channel %d\n",
487 le16_to_cpu(rxon
->channel
));
490 IWL_ERR(priv
, "Invalid RXON\n");
495 EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd
);
498 * iwl_legacy_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
499 * @priv: staging_rxon is compared to active_rxon
501 * If the RXON structure is changing enough to require a new tune,
502 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
503 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
505 int iwl_legacy_full_rxon_required(struct iwl_priv
*priv
,
506 struct iwl_rxon_context
*ctx
)
508 const struct iwl_legacy_rxon_cmd
*staging
= &ctx
->staging
;
509 const struct iwl_legacy_rxon_cmd
*active
= &ctx
->active
;
513 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
517 #define CHK_NEQ(c1, c2) \
518 if ((c1) != (c2)) { \
519 IWL_DEBUG_INFO(priv, "need full RXON - " \
520 #c1 " != " #c2 " - %d != %d\n", \
525 /* These items are only settable from the full RXON command */
526 CHK(!iwl_legacy_is_associated_ctx(ctx
));
527 CHK(compare_ether_addr(staging
->bssid_addr
, active
->bssid_addr
));
528 CHK(compare_ether_addr(staging
->node_addr
, active
->node_addr
));
529 CHK(compare_ether_addr(staging
->wlap_bssid_addr
,
530 active
->wlap_bssid_addr
));
531 CHK_NEQ(staging
->dev_type
, active
->dev_type
);
532 CHK_NEQ(staging
->channel
, active
->channel
);
533 CHK_NEQ(staging
->air_propagation
, active
->air_propagation
);
534 CHK_NEQ(staging
->ofdm_ht_single_stream_basic_rates
,
535 active
->ofdm_ht_single_stream_basic_rates
);
536 CHK_NEQ(staging
->ofdm_ht_dual_stream_basic_rates
,
537 active
->ofdm_ht_dual_stream_basic_rates
);
538 CHK_NEQ(staging
->assoc_id
, active
->assoc_id
);
540 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
541 * be updated with the RXON_ASSOC command -- however only some
542 * flag transitions are allowed using RXON_ASSOC */
544 /* Check if we are not switching bands */
545 CHK_NEQ(staging
->flags
& RXON_FLG_BAND_24G_MSK
,
546 active
->flags
& RXON_FLG_BAND_24G_MSK
);
548 /* Check if we are switching association toggle */
549 CHK_NEQ(staging
->filter_flags
& RXON_FILTER_ASSOC_MSK
,
550 active
->filter_flags
& RXON_FILTER_ASSOC_MSK
);
557 EXPORT_SYMBOL(iwl_legacy_full_rxon_required
);
559 u8
iwl_legacy_get_lowest_plcp(struct iwl_priv
*priv
,
560 struct iwl_rxon_context
*ctx
)
563 * Assign the lowest rate -- should really get this from
564 * the beacon skb from mac80211.
566 if (ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
)
567 return IWL_RATE_1M_PLCP
;
569 return IWL_RATE_6M_PLCP
;
571 EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp
);
573 static void _iwl_legacy_set_rxon_ht(struct iwl_priv
*priv
,
574 struct iwl_ht_config
*ht_conf
,
575 struct iwl_rxon_context
*ctx
)
577 struct iwl_legacy_rxon_cmd
*rxon
= &ctx
->staging
;
579 if (!ctx
->ht
.enabled
) {
580 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
581 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
|
582 RXON_FLG_HT40_PROT_MSK
|
583 RXON_FLG_HT_PROT_MSK
);
587 rxon
->flags
|= cpu_to_le32(ctx
->ht
.protection
<<
588 RXON_FLG_HT_OPERATING_MODE_POS
);
590 /* Set up channel bandwidth:
591 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
592 /* clear the HT channel mode before set the mode */
593 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
594 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
595 if (iwl_legacy_is_ht40_tx_allowed(priv
, ctx
, NULL
)) {
597 if (ctx
->ht
.protection
==
598 IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
) {
599 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_PURE_40
;
600 /* Note: control channel is opposite of extension channel */
601 switch (ctx
->ht
.extension_chan_offset
) {
602 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
604 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
606 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
608 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
612 /* Note: control channel is opposite of extension channel */
613 switch (ctx
->ht
.extension_chan_offset
) {
614 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
616 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
617 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
619 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
621 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
622 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
624 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
626 /* channel location only valid if in Mixed mode */
628 "invalid extension channel offset\n");
633 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_LEGACY
;
636 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
637 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
, ctx
);
639 IWL_DEBUG_ASSOC(priv
, "rxon flags 0x%X operation mode :0x%X "
640 "extension channel offset 0x%x\n",
641 le32_to_cpu(rxon
->flags
), ctx
->ht
.protection
,
642 ctx
->ht
.extension_chan_offset
);
645 void iwl_legacy_set_rxon_ht(struct iwl_priv
*priv
, struct iwl_ht_config
*ht_conf
)
647 struct iwl_rxon_context
*ctx
;
649 for_each_context(priv
, ctx
)
650 _iwl_legacy_set_rxon_ht(priv
, ht_conf
, ctx
);
652 EXPORT_SYMBOL(iwl_legacy_set_rxon_ht
);
654 /* Return valid, unused, channel for a passive scan to reset the RF */
655 u8
iwl_legacy_get_single_channel_number(struct iwl_priv
*priv
,
656 enum ieee80211_band band
)
658 const struct iwl_channel_info
*ch_info
;
662 struct iwl_rxon_context
*ctx
;
664 if (band
== IEEE80211_BAND_5GHZ
) {
666 max
= priv
->channel_count
;
672 for (i
= min
; i
< max
; i
++) {
675 for_each_context(priv
, ctx
) {
676 busy
= priv
->channel_info
[i
].channel
==
677 le16_to_cpu(ctx
->staging
.channel
);
685 channel
= priv
->channel_info
[i
].channel
;
686 ch_info
= iwl_legacy_get_channel_info(priv
, band
, channel
);
687 if (iwl_legacy_is_channel_valid(ch_info
))
693 EXPORT_SYMBOL(iwl_legacy_get_single_channel_number
);
696 * iwl_legacy_set_rxon_channel - Set the band and channel values in staging RXON
697 * @ch: requested channel as a pointer to struct ieee80211_channel
699 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
700 * in the staging RXON flag structure based on the ch->band
703 iwl_legacy_set_rxon_channel(struct iwl_priv
*priv
, struct ieee80211_channel
*ch
,
704 struct iwl_rxon_context
*ctx
)
706 enum ieee80211_band band
= ch
->band
;
707 u16 channel
= ch
->hw_value
;
709 if ((le16_to_cpu(ctx
->staging
.channel
) == channel
) &&
710 (priv
->band
== band
))
713 ctx
->staging
.channel
= cpu_to_le16(channel
);
714 if (band
== IEEE80211_BAND_5GHZ
)
715 ctx
->staging
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
717 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
721 IWL_DEBUG_INFO(priv
, "Staging channel set to %d [%d]\n", channel
, band
);
725 EXPORT_SYMBOL(iwl_legacy_set_rxon_channel
);
727 void iwl_legacy_set_flags_for_band(struct iwl_priv
*priv
,
728 struct iwl_rxon_context
*ctx
,
729 enum ieee80211_band band
,
730 struct ieee80211_vif
*vif
)
732 if (band
== IEEE80211_BAND_5GHZ
) {
733 ctx
->staging
.flags
&=
734 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
736 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
738 /* Copied from iwl_post_associate() */
739 if (vif
&& vif
->bss_conf
.use_short_slot
)
740 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
742 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
744 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
745 ctx
->staging
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
746 ctx
->staging
.flags
&= ~RXON_FLG_CCK_MSK
;
749 EXPORT_SYMBOL(iwl_legacy_set_flags_for_band
);
752 * initialize rxon structure with default values from eeprom
754 void iwl_legacy_connection_init_rx_config(struct iwl_priv
*priv
,
755 struct iwl_rxon_context
*ctx
)
757 const struct iwl_channel_info
*ch_info
;
759 memset(&ctx
->staging
, 0, sizeof(ctx
->staging
));
762 ctx
->staging
.dev_type
= ctx
->unused_devtype
;
764 switch (ctx
->vif
->type
) {
766 case NL80211_IFTYPE_STATION
:
767 ctx
->staging
.dev_type
= ctx
->station_devtype
;
768 ctx
->staging
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
771 case NL80211_IFTYPE_ADHOC
:
772 ctx
->staging
.dev_type
= ctx
->ibss_devtype
;
773 ctx
->staging
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
774 ctx
->staging
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
775 RXON_FILTER_ACCEPT_GRP_MSK
;
779 IWL_ERR(priv
, "Unsupported interface type %d\n",
785 /* TODO: Figure out when short_preamble would be set and cache from
787 if (!hw_to_local(priv
->hw
)->short_preamble
)
788 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
790 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
793 ch_info
= iwl_legacy_get_channel_info(priv
, priv
->band
,
794 le16_to_cpu(ctx
->active
.channel
));
797 ch_info
= &priv
->channel_info
[0];
799 ctx
->staging
.channel
= cpu_to_le16(ch_info
->channel
);
800 priv
->band
= ch_info
->band
;
802 iwl_legacy_set_flags_for_band(priv
, ctx
, priv
->band
, ctx
->vif
);
804 ctx
->staging
.ofdm_basic_rates
=
805 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
806 ctx
->staging
.cck_basic_rates
=
807 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
809 /* clear both MIX and PURE40 mode flag */
810 ctx
->staging
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED
|
811 RXON_FLG_CHANNEL_MODE_PURE_40
);
813 memcpy(ctx
->staging
.node_addr
, ctx
->vif
->addr
, ETH_ALEN
);
815 ctx
->staging
.ofdm_ht_single_stream_basic_rates
= 0xff;
816 ctx
->staging
.ofdm_ht_dual_stream_basic_rates
= 0xff;
818 EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config
);
820 void iwl_legacy_set_rate(struct iwl_priv
*priv
)
822 const struct ieee80211_supported_band
*hw
= NULL
;
823 struct ieee80211_rate
*rate
;
824 struct iwl_rxon_context
*ctx
;
827 hw
= iwl_get_hw_mode(priv
, priv
->band
);
829 IWL_ERR(priv
, "Failed to set rate: unable to get hw mode\n");
833 priv
->active_rate
= 0;
835 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
836 rate
= &(hw
->bitrates
[i
]);
837 if (rate
->hw_value
< IWL_RATE_COUNT_LEGACY
)
838 priv
->active_rate
|= (1 << rate
->hw_value
);
841 IWL_DEBUG_RATE(priv
, "Set active_rate = %0x\n", priv
->active_rate
);
843 for_each_context(priv
, ctx
) {
844 ctx
->staging
.cck_basic_rates
=
845 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
847 ctx
->staging
.ofdm_basic_rates
=
848 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
851 EXPORT_SYMBOL(iwl_legacy_set_rate
);
853 void iwl_legacy_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
855 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
857 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
860 if (priv
->switch_rxon
.switch_in_progress
) {
861 ieee80211_chswitch_done(ctx
->vif
, is_success
);
862 mutex_lock(&priv
->mutex
);
863 priv
->switch_rxon
.switch_in_progress
= false;
864 mutex_unlock(&priv
->mutex
);
867 EXPORT_SYMBOL(iwl_legacy_chswitch_done
);
869 void iwl_legacy_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
871 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
872 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
874 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
875 struct iwl_legacy_rxon_cmd
*rxon
= (void *)&ctx
->active
;
877 if (priv
->switch_rxon
.switch_in_progress
) {
878 if (!le32_to_cpu(csa
->status
) &&
879 (csa
->channel
== priv
->switch_rxon
.channel
)) {
880 rxon
->channel
= csa
->channel
;
881 ctx
->staging
.channel
= csa
->channel
;
882 IWL_DEBUG_11H(priv
, "CSA notif: channel %d\n",
883 le16_to_cpu(csa
->channel
));
884 iwl_legacy_chswitch_done(priv
, true);
886 IWL_ERR(priv
, "CSA notif (fail) : channel %d\n",
887 le16_to_cpu(csa
->channel
));
888 iwl_legacy_chswitch_done(priv
, false);
892 EXPORT_SYMBOL(iwl_legacy_rx_csa
);
894 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
895 void iwl_legacy_print_rx_config_cmd(struct iwl_priv
*priv
,
896 struct iwl_rxon_context
*ctx
)
898 struct iwl_legacy_rxon_cmd
*rxon
= &ctx
->staging
;
900 IWL_DEBUG_RADIO(priv
, "RX CONFIG:\n");
901 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
902 IWL_DEBUG_RADIO(priv
, "u16 channel: 0x%x\n",
903 le16_to_cpu(rxon
->channel
));
904 IWL_DEBUG_RADIO(priv
, "u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
905 IWL_DEBUG_RADIO(priv
, "u32 filter_flags: 0x%08x\n",
906 le32_to_cpu(rxon
->filter_flags
));
907 IWL_DEBUG_RADIO(priv
, "u8 dev_type: 0x%x\n", rxon
->dev_type
);
908 IWL_DEBUG_RADIO(priv
, "u8 ofdm_basic_rates: 0x%02x\n",
909 rxon
->ofdm_basic_rates
);
910 IWL_DEBUG_RADIO(priv
, "u8 cck_basic_rates: 0x%02x\n",
911 rxon
->cck_basic_rates
);
912 IWL_DEBUG_RADIO(priv
, "u8[6] node_addr: %pM\n", rxon
->node_addr
);
913 IWL_DEBUG_RADIO(priv
, "u8[6] bssid_addr: %pM\n", rxon
->bssid_addr
);
914 IWL_DEBUG_RADIO(priv
, "u16 assoc_id: 0x%x\n",
915 le16_to_cpu(rxon
->assoc_id
));
917 EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd
);
920 * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card
922 void iwl_legacy_irq_handle_error(struct iwl_priv
*priv
)
924 /* Set the FW error flag -- cleared on iwl_down */
925 set_bit(STATUS_FW_ERROR
, &priv
->status
);
927 /* Cancel currently queued command. */
928 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
930 IWL_ERR(priv
, "Loaded firmware version: %s\n",
931 priv
->hw
->wiphy
->fw_version
);
933 priv
->cfg
->ops
->lib
->dump_nic_error_log(priv
);
934 if (priv
->cfg
->ops
->lib
->dump_fh
)
935 priv
->cfg
->ops
->lib
->dump_fh(priv
, NULL
, false);
936 priv
->cfg
->ops
->lib
->dump_nic_event_log(priv
, false, NULL
, false);
937 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
938 if (iwl_legacy_get_debug_level(priv
) & IWL_DL_FW_ERRORS
)
939 iwl_legacy_print_rx_config_cmd(priv
,
940 &priv
->contexts
[IWL_RXON_CTX_BSS
]);
943 wake_up_interruptible(&priv
->wait_command_queue
);
945 /* Keep the restart process from trying to send host
946 * commands by clearing the INIT status bit */
947 clear_bit(STATUS_READY
, &priv
->status
);
949 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
950 IWL_DEBUG(priv
, IWL_DL_FW_ERRORS
,
951 "Restarting adapter due to uCode error.\n");
953 if (priv
->cfg
->mod_params
->restart_fw
)
954 queue_work(priv
->workqueue
, &priv
->restart
);
957 EXPORT_SYMBOL(iwl_legacy_irq_handle_error
);
959 static int iwl_legacy_apm_stop_master(struct iwl_priv
*priv
)
963 /* stop device's busmaster DMA activity */
964 iwl_legacy_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
966 ret
= iwl_poll_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_MASTER_DISABLED
,
967 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
969 IWL_WARN(priv
, "Master Disable Timed Out, 100 usec\n");
971 IWL_DEBUG_INFO(priv
, "stop master\n");
976 void iwl_legacy_apm_stop(struct iwl_priv
*priv
)
978 IWL_DEBUG_INFO(priv
, "Stop card, put in low power state\n");
980 /* Stop device's DMA activity */
981 iwl_legacy_apm_stop_master(priv
);
983 /* Reset the entire device */
984 iwl_legacy_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
989 * Clear "initialization complete" bit to move adapter from
990 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
992 iwl_legacy_clear_bit(priv
, CSR_GP_CNTRL
,
993 CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
995 EXPORT_SYMBOL(iwl_legacy_apm_stop
);
999 * Start up NIC's basic functionality after it has been reset
1000 * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop())
1001 * NOTE: This does not load uCode nor start the embedded processor
1003 int iwl_legacy_apm_init(struct iwl_priv
*priv
)
1008 IWL_DEBUG_INFO(priv
, "Init card's basic functions\n");
1011 * Use "set_bit" below rather than "write", to preserve any hardware
1012 * bits already set by default after reset.
1015 /* Disable L0S exit timer (platform NMI Work/Around) */
1016 iwl_legacy_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
1017 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
1020 * Disable L0s without affecting L1;
1021 * don't wait for ICH L0s (ICH bug W/A)
1023 iwl_legacy_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
1024 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX
);
1026 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1027 iwl_legacy_set_bit(priv
, CSR_DBG_HPET_MEM_REG
,
1028 CSR_DBG_HPET_MEM_REG_VAL
);
1031 * Enable HAP INTA (interrupt from management bus) to
1032 * wake device's PCI Express link L1a -> L0s
1033 * NOTE: This is no-op for 3945 (non-existant bit)
1035 iwl_legacy_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1036 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A
);
1039 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1040 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1041 * If so (likely), disable L0S, so device moves directly L0->L1;
1042 * costs negligible amount of power savings.
1043 * If not (unlikely), enable L0S, so there is at least some
1044 * power savings, even without L1.
1046 if (priv
->cfg
->base_params
->set_l0s
) {
1047 lctl
= iwl_legacy_pcie_link_ctl(priv
);
1048 if ((lctl
& PCI_CFG_LINK_CTRL_VAL_L1_EN
) ==
1049 PCI_CFG_LINK_CTRL_VAL_L1_EN
) {
1050 /* L1-ASPM enabled; disable(!) L0S */
1051 iwl_legacy_set_bit(priv
, CSR_GIO_REG
,
1052 CSR_GIO_REG_VAL_L0S_ENABLED
);
1053 IWL_DEBUG_POWER(priv
, "L1 Enabled; Disabling L0S\n");
1055 /* L1-ASPM disabled; enable(!) L0S */
1056 iwl_legacy_clear_bit(priv
, CSR_GIO_REG
,
1057 CSR_GIO_REG_VAL_L0S_ENABLED
);
1058 IWL_DEBUG_POWER(priv
, "L1 Disabled; Enabling L0S\n");
1062 /* Configure analog phase-lock-loop before activating to D0A */
1063 if (priv
->cfg
->base_params
->pll_cfg_val
)
1064 iwl_legacy_set_bit(priv
, CSR_ANA_PLL_CFG
,
1065 priv
->cfg
->base_params
->pll_cfg_val
);
1068 * Set "initialization complete" bit to move adapter from
1069 * D0U* --> D0A* (powered-up active) state.
1071 iwl_legacy_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1074 * Wait for clock stabilization; once stabilized, access to
1075 * device-internal resources is supported, e.g. iwl_legacy_write_prph()
1076 * and accesses to uCode SRAM.
1078 ret
= iwl_poll_bit(priv
, CSR_GP_CNTRL
,
1079 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
1080 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
1082 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
1087 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1088 * BSM (Boostrap State Machine) is only in 3945 and 4965.
1090 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1091 * do not disable clocks. This preserves any hardware bits already
1092 * set by default in "CLK_CTRL_REG" after reset.
1094 if (priv
->cfg
->base_params
->use_bsm
)
1095 iwl_legacy_write_prph(priv
, APMG_CLK_EN_REG
,
1096 APMG_CLK_VAL_DMA_CLK_RQT
| APMG_CLK_VAL_BSM_CLK_RQT
);
1098 iwl_legacy_write_prph(priv
, APMG_CLK_EN_REG
,
1099 APMG_CLK_VAL_DMA_CLK_RQT
);
1102 /* Disable L1-Active */
1103 iwl_legacy_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
1104 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
1109 EXPORT_SYMBOL(iwl_legacy_apm_init
);
1112 int iwl_legacy_set_tx_power(struct iwl_priv
*priv
, s8 tx_power
, bool force
)
1117 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1119 lockdep_assert_held(&priv
->mutex
);
1121 if (priv
->tx_power_user_lmt
== tx_power
&& !force
)
1124 if (!priv
->cfg
->ops
->lib
->send_tx_power
)
1127 if (tx_power
< IWL4965_TX_POWER_TARGET_POWER_MIN
) {
1129 "Requested user TXPOWER %d below lower limit %d.\n",
1131 IWL4965_TX_POWER_TARGET_POWER_MIN
);
1135 if (tx_power
> priv
->tx_power_device_lmt
) {
1137 "Requested user TXPOWER %d above upper limit %d.\n",
1138 tx_power
, priv
->tx_power_device_lmt
);
1142 if (!iwl_legacy_is_ready_rf(priv
))
1145 /* scan complete and commit_rxon use tx_power_next value,
1146 * it always need to be updated for newest request */
1147 priv
->tx_power_next
= tx_power
;
1149 /* do not set tx power when scanning or channel changing */
1150 defer
= test_bit(STATUS_SCANNING
, &priv
->status
) ||
1151 memcmp(&ctx
->active
, &ctx
->staging
, sizeof(ctx
->staging
));
1152 if (defer
&& !force
) {
1153 IWL_DEBUG_INFO(priv
, "Deferring tx power set\n");
1157 prev_tx_power
= priv
->tx_power_user_lmt
;
1158 priv
->tx_power_user_lmt
= tx_power
;
1160 ret
= priv
->cfg
->ops
->lib
->send_tx_power(priv
);
1162 /* if fail to set tx_power, restore the orig. tx power */
1164 priv
->tx_power_user_lmt
= prev_tx_power
;
1165 priv
->tx_power_next
= prev_tx_power
;
1169 EXPORT_SYMBOL(iwl_legacy_set_tx_power
);
1171 void iwl_legacy_send_bt_config(struct iwl_priv
*priv
)
1173 struct iwl_bt_cmd bt_cmd
= {
1174 .lead_time
= BT_LEAD_TIME_DEF
,
1175 .max_kill
= BT_MAX_KILL_DEF
,
1180 if (!bt_coex_active
)
1181 bt_cmd
.flags
= BT_COEX_DISABLE
;
1183 bt_cmd
.flags
= BT_COEX_ENABLE
;
1185 IWL_DEBUG_INFO(priv
, "BT coex %s\n",
1186 (bt_cmd
.flags
== BT_COEX_DISABLE
) ? "disable" : "active");
1188 if (iwl_legacy_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1189 sizeof(struct iwl_bt_cmd
), &bt_cmd
))
1190 IWL_ERR(priv
, "failed to send BT Coex Config\n");
1192 EXPORT_SYMBOL(iwl_legacy_send_bt_config
);
1194 int iwl_legacy_send_statistics_request(struct iwl_priv
*priv
, u8 flags
, bool clear
)
1196 struct iwl_statistics_cmd statistics_cmd
= {
1197 .configuration_flags
=
1198 clear
? IWL_STATS_CONF_CLEAR_STATS
: 0,
1201 if (flags
& CMD_ASYNC
)
1202 return iwl_legacy_send_cmd_pdu_async(priv
, REPLY_STATISTICS_CMD
,
1203 sizeof(struct iwl_statistics_cmd
),
1204 &statistics_cmd
, NULL
);
1206 return iwl_legacy_send_cmd_pdu(priv
, REPLY_STATISTICS_CMD
,
1207 sizeof(struct iwl_statistics_cmd
),
1210 EXPORT_SYMBOL(iwl_legacy_send_statistics_request
);
1212 void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv
*priv
,
1213 struct iwl_rx_mem_buffer
*rxb
)
1215 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1216 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1217 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
1218 IWL_DEBUG_RX(priv
, "sleep mode: %d, src: %d\n",
1219 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
1222 EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif
);
1224 void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
1225 struct iwl_rx_mem_buffer
*rxb
)
1227 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1228 u32 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
1229 IWL_DEBUG_RADIO(priv
, "Dumping %d bytes of unhandled "
1230 "notification for %s:\n", len
,
1231 iwl_legacy_get_cmd_string(pkt
->hdr
.cmd
));
1232 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, pkt
->u
.raw
, len
);
1234 EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif
);
1236 void iwl_legacy_rx_reply_error(struct iwl_priv
*priv
,
1237 struct iwl_rx_mem_buffer
*rxb
)
1239 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1241 IWL_ERR(priv
, "Error Reply type 0x%08X cmd %s (0x%02X) "
1242 "seq 0x%04X ser 0x%08X\n",
1243 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
1244 iwl_legacy_get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
1245 pkt
->u
.err_resp
.cmd_id
,
1246 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
1247 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
1249 EXPORT_SYMBOL(iwl_legacy_rx_reply_error
);
1251 void iwl_legacy_clear_isr_stats(struct iwl_priv
*priv
)
1253 memset(&priv
->isr_stats
, 0, sizeof(priv
->isr_stats
));
1256 int iwl_legacy_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1257 const struct ieee80211_tx_queue_params
*params
)
1259 struct iwl_priv
*priv
= hw
->priv
;
1260 struct iwl_rxon_context
*ctx
;
1261 unsigned long flags
;
1264 IWL_DEBUG_MAC80211(priv
, "enter\n");
1266 if (!iwl_legacy_is_ready_rf(priv
)) {
1267 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1271 if (queue
>= AC_NUM
) {
1272 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1276 q
= AC_NUM
- 1 - queue
;
1278 spin_lock_irqsave(&priv
->lock
, flags
);
1280 for_each_context(priv
, ctx
) {
1281 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1282 cpu_to_le16(params
->cw_min
);
1283 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1284 cpu_to_le16(params
->cw_max
);
1285 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1286 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1287 cpu_to_le16((params
->txop
* 32));
1289 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1292 spin_unlock_irqrestore(&priv
->lock
, flags
);
1294 IWL_DEBUG_MAC80211(priv
, "leave\n");
1297 EXPORT_SYMBOL(iwl_legacy_mac_conf_tx
);
1299 int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1301 struct iwl_priv
*priv
= hw
->priv
;
1303 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1305 EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon
);
1308 iwl_legacy_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1310 iwl_legacy_connection_init_rx_config(priv
, ctx
);
1312 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1313 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
, ctx
);
1315 return iwl_legacy_commit_rxon(priv
, ctx
);
1318 static int iwl_legacy_setup_interface(struct iwl_priv
*priv
,
1319 struct iwl_rxon_context
*ctx
)
1321 struct ieee80211_vif
*vif
= ctx
->vif
;
1324 lockdep_assert_held(&priv
->mutex
);
1327 * This variable will be correct only when there's just
1328 * a single context, but all code using it is for hardware
1329 * that supports only one context.
1331 priv
->iw_mode
= vif
->type
;
1333 ctx
->is_active
= true;
1335 err
= iwl_legacy_set_mode(priv
, ctx
);
1337 if (!ctx
->always_active
)
1338 ctx
->is_active
= false;
1346 iwl_legacy_mac_add_interface(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1348 struct iwl_priv
*priv
= hw
->priv
;
1349 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1350 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1353 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1354 vif
->type
, vif
->addr
);
1356 mutex_lock(&priv
->mutex
);
1358 if (!iwl_legacy_is_ready_rf(priv
)) {
1359 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1364 for_each_context(priv
, tmp
) {
1365 u32 possible_modes
=
1366 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1369 /* check if this busy context is exclusive */
1370 if (tmp
->exclusive_interface_modes
&
1371 BIT(tmp
->vif
->type
)) {
1378 if (!(possible_modes
& BIT(vif
->type
)))
1381 /* have maybe usable context w/o interface */
1391 vif_priv
->ctx
= ctx
;
1394 err
= iwl_legacy_setup_interface(priv
, ctx
);
1399 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1401 mutex_unlock(&priv
->mutex
);
1403 IWL_DEBUG_MAC80211(priv
, "leave\n");
1406 EXPORT_SYMBOL(iwl_legacy_mac_add_interface
);
1408 static void iwl_legacy_teardown_interface(struct iwl_priv
*priv
,
1409 struct ieee80211_vif
*vif
,
1412 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
1414 lockdep_assert_held(&priv
->mutex
);
1416 if (priv
->scan_vif
== vif
) {
1417 iwl_legacy_scan_cancel_timeout(priv
, 200);
1418 iwl_legacy_force_scan_end(priv
);
1422 iwl_legacy_set_mode(priv
, ctx
);
1423 if (!ctx
->always_active
)
1424 ctx
->is_active
= false;
1428 void iwl_legacy_mac_remove_interface(struct ieee80211_hw
*hw
,
1429 struct ieee80211_vif
*vif
)
1431 struct iwl_priv
*priv
= hw
->priv
;
1432 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
1434 IWL_DEBUG_MAC80211(priv
, "enter\n");
1436 mutex_lock(&priv
->mutex
);
1438 WARN_ON(ctx
->vif
!= vif
);
1441 iwl_legacy_teardown_interface(priv
, vif
, false);
1443 memset(priv
->bssid
, 0, ETH_ALEN
);
1444 mutex_unlock(&priv
->mutex
);
1446 IWL_DEBUG_MAC80211(priv
, "leave\n");
1449 EXPORT_SYMBOL(iwl_legacy_mac_remove_interface
);
1451 int iwl_legacy_alloc_txq_mem(struct iwl_priv
*priv
)
1454 priv
->txq
= kzalloc(
1455 sizeof(struct iwl_tx_queue
) *
1456 priv
->cfg
->base_params
->num_of_queues
,
1459 IWL_ERR(priv
, "Not enough memory for txq\n");
1464 EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem
);
1466 void iwl_legacy_txq_mem(struct iwl_priv
*priv
)
1471 EXPORT_SYMBOL(iwl_legacy_txq_mem
);
1473 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
1475 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
1477 void iwl_legacy_reset_traffic_log(struct iwl_priv
*priv
)
1479 priv
->tx_traffic_idx
= 0;
1480 priv
->rx_traffic_idx
= 0;
1481 if (priv
->tx_traffic
)
1482 memset(priv
->tx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
1483 if (priv
->rx_traffic
)
1484 memset(priv
->rx_traffic
, 0, IWL_TRAFFIC_DUMP_SIZE
);
1487 int iwl_legacy_alloc_traffic_mem(struct iwl_priv
*priv
)
1489 u32 traffic_size
= IWL_TRAFFIC_DUMP_SIZE
;
1491 if (iwlegacy_debug_level
& IWL_DL_TX
) {
1492 if (!priv
->tx_traffic
) {
1494 kzalloc(traffic_size
, GFP_KERNEL
);
1495 if (!priv
->tx_traffic
)
1499 if (iwlegacy_debug_level
& IWL_DL_RX
) {
1500 if (!priv
->rx_traffic
) {
1502 kzalloc(traffic_size
, GFP_KERNEL
);
1503 if (!priv
->rx_traffic
)
1507 iwl_legacy_reset_traffic_log(priv
);
1510 EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem
);
1512 void iwl_legacy_free_traffic_mem(struct iwl_priv
*priv
)
1514 kfree(priv
->tx_traffic
);
1515 priv
->tx_traffic
= NULL
;
1517 kfree(priv
->rx_traffic
);
1518 priv
->rx_traffic
= NULL
;
1520 EXPORT_SYMBOL(iwl_legacy_free_traffic_mem
);
1522 void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv
*priv
,
1523 u16 length
, struct ieee80211_hdr
*header
)
1528 if (likely(!(iwlegacy_debug_level
& IWL_DL_TX
)))
1531 if (!priv
->tx_traffic
)
1534 fc
= header
->frame_control
;
1535 if (ieee80211_is_data(fc
)) {
1536 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
1537 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
1538 memcpy((priv
->tx_traffic
+
1539 (priv
->tx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
1541 priv
->tx_traffic_idx
=
1542 (priv
->tx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
1545 EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame
);
1547 void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv
*priv
,
1548 u16 length
, struct ieee80211_hdr
*header
)
1553 if (likely(!(iwlegacy_debug_level
& IWL_DL_RX
)))
1556 if (!priv
->rx_traffic
)
1559 fc
= header
->frame_control
;
1560 if (ieee80211_is_data(fc
)) {
1561 len
= (length
> IWL_TRAFFIC_ENTRY_SIZE
)
1562 ? IWL_TRAFFIC_ENTRY_SIZE
: length
;
1563 memcpy((priv
->rx_traffic
+
1564 (priv
->rx_traffic_idx
* IWL_TRAFFIC_ENTRY_SIZE
)),
1566 priv
->rx_traffic_idx
=
1567 (priv
->rx_traffic_idx
+ 1) % IWL_TRAFFIC_ENTRIES
;
1570 EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame
);
1572 const char *iwl_legacy_get_mgmt_string(int cmd
)
1575 IWL_CMD(MANAGEMENT_ASSOC_REQ
);
1576 IWL_CMD(MANAGEMENT_ASSOC_RESP
);
1577 IWL_CMD(MANAGEMENT_REASSOC_REQ
);
1578 IWL_CMD(MANAGEMENT_REASSOC_RESP
);
1579 IWL_CMD(MANAGEMENT_PROBE_REQ
);
1580 IWL_CMD(MANAGEMENT_PROBE_RESP
);
1581 IWL_CMD(MANAGEMENT_BEACON
);
1582 IWL_CMD(MANAGEMENT_ATIM
);
1583 IWL_CMD(MANAGEMENT_DISASSOC
);
1584 IWL_CMD(MANAGEMENT_AUTH
);
1585 IWL_CMD(MANAGEMENT_DEAUTH
);
1586 IWL_CMD(MANAGEMENT_ACTION
);
1593 const char *iwl_legacy_get_ctrl_string(int cmd
)
1596 IWL_CMD(CONTROL_BACK_REQ
);
1597 IWL_CMD(CONTROL_BACK
);
1598 IWL_CMD(CONTROL_PSPOLL
);
1599 IWL_CMD(CONTROL_RTS
);
1600 IWL_CMD(CONTROL_CTS
);
1601 IWL_CMD(CONTROL_ACK
);
1602 IWL_CMD(CONTROL_CFEND
);
1603 IWL_CMD(CONTROL_CFENDACK
);
1610 void iwl_legacy_clear_traffic_stats(struct iwl_priv
*priv
)
1612 memset(&priv
->tx_stats
, 0, sizeof(struct traffic_stats
));
1613 memset(&priv
->rx_stats
, 0, sizeof(struct traffic_stats
));
1617 * if CONFIG_IWLWIFI_LEGACY_DEBUGFS defined,
1618 * iwl_legacy_update_stats function will
1619 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass
1620 * Use debugFs to display the rx/rx_statistics
1621 * if CONFIG_IWLWIFI_LEGACY_DEBUGFS not being defined, then no MGMT and CTRL
1622 * information will be recorded, but DATA pkt still will be recorded
1623 * for the reason of iwl_led.c need to control the led blinking based on
1624 * number of tx and rx data.
1628 iwl_legacy_update_stats(struct iwl_priv
*priv
, bool is_tx
, __le16 fc
, u16 len
)
1630 struct traffic_stats
*stats
;
1633 stats
= &priv
->tx_stats
;
1635 stats
= &priv
->rx_stats
;
1637 if (ieee80211_is_mgmt(fc
)) {
1638 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
1639 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
1640 stats
->mgmt
[MANAGEMENT_ASSOC_REQ
]++;
1642 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP
):
1643 stats
->mgmt
[MANAGEMENT_ASSOC_RESP
]++;
1645 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
1646 stats
->mgmt
[MANAGEMENT_REASSOC_REQ
]++;
1648 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP
):
1649 stats
->mgmt
[MANAGEMENT_REASSOC_RESP
]++;
1651 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
):
1652 stats
->mgmt
[MANAGEMENT_PROBE_REQ
]++;
1654 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP
):
1655 stats
->mgmt
[MANAGEMENT_PROBE_RESP
]++;
1657 case cpu_to_le16(IEEE80211_STYPE_BEACON
):
1658 stats
->mgmt
[MANAGEMENT_BEACON
]++;
1660 case cpu_to_le16(IEEE80211_STYPE_ATIM
):
1661 stats
->mgmt
[MANAGEMENT_ATIM
]++;
1663 case cpu_to_le16(IEEE80211_STYPE_DISASSOC
):
1664 stats
->mgmt
[MANAGEMENT_DISASSOC
]++;
1666 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
1667 stats
->mgmt
[MANAGEMENT_AUTH
]++;
1669 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
1670 stats
->mgmt
[MANAGEMENT_DEAUTH
]++;
1672 case cpu_to_le16(IEEE80211_STYPE_ACTION
):
1673 stats
->mgmt
[MANAGEMENT_ACTION
]++;
1676 } else if (ieee80211_is_ctl(fc
)) {
1677 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
1678 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ
):
1679 stats
->ctrl
[CONTROL_BACK_REQ
]++;
1681 case cpu_to_le16(IEEE80211_STYPE_BACK
):
1682 stats
->ctrl
[CONTROL_BACK
]++;
1684 case cpu_to_le16(IEEE80211_STYPE_PSPOLL
):
1685 stats
->ctrl
[CONTROL_PSPOLL
]++;
1687 case cpu_to_le16(IEEE80211_STYPE_RTS
):
1688 stats
->ctrl
[CONTROL_RTS
]++;
1690 case cpu_to_le16(IEEE80211_STYPE_CTS
):
1691 stats
->ctrl
[CONTROL_CTS
]++;
1693 case cpu_to_le16(IEEE80211_STYPE_ACK
):
1694 stats
->ctrl
[CONTROL_ACK
]++;
1696 case cpu_to_le16(IEEE80211_STYPE_CFEND
):
1697 stats
->ctrl
[CONTROL_CFEND
]++;
1699 case cpu_to_le16(IEEE80211_STYPE_CFENDACK
):
1700 stats
->ctrl
[CONTROL_CFENDACK
]++;
1706 stats
->data_bytes
+= len
;
1709 EXPORT_SYMBOL(iwl_legacy_update_stats
);
1712 static void _iwl_legacy_force_rf_reset(struct iwl_priv
*priv
)
1714 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1717 if (!iwl_legacy_is_any_associated(priv
)) {
1718 IWL_DEBUG_SCAN(priv
, "force reset rejected: not associated\n");
1722 * There is no easy and better way to force reset the radio,
1723 * the only known method is switching channel which will force to
1724 * reset and tune the radio.
1725 * Use internal short scan (single channel) operation to should
1726 * achieve this objective.
1727 * Driver should reset the radio when number of consecutive missed
1728 * beacon, or any other uCode error condition detected.
1730 IWL_DEBUG_INFO(priv
, "perform radio reset.\n");
1731 iwl_legacy_internal_short_hw_scan(priv
);
1735 int iwl_legacy_force_reset(struct iwl_priv
*priv
, int mode
, bool external
)
1737 struct iwl_force_reset
*force_reset
;
1739 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1742 if (mode
>= IWL_MAX_FORCE_RESET
) {
1743 IWL_DEBUG_INFO(priv
, "invalid reset request.\n");
1746 force_reset
= &priv
->force_reset
[mode
];
1747 force_reset
->reset_request_count
++;
1749 if (force_reset
->last_force_reset_jiffies
&&
1750 time_after(force_reset
->last_force_reset_jiffies
+
1751 force_reset
->reset_duration
, jiffies
)) {
1752 IWL_DEBUG_INFO(priv
, "force reset rejected\n");
1753 force_reset
->reset_reject_count
++;
1757 force_reset
->reset_success_count
++;
1758 force_reset
->last_force_reset_jiffies
= jiffies
;
1759 IWL_DEBUG_INFO(priv
, "perform force reset (%d)\n", mode
);
1762 _iwl_legacy_force_rf_reset(priv
);
1766 * if the request is from external(ex: debugfs),
1767 * then always perform the request in regardless the module
1769 * if the request is from internal (uCode error or driver
1770 * detect failure), then fw_restart module parameter
1771 * need to be check before performing firmware reload
1773 if (!external
&& !priv
->cfg
->mod_params
->restart_fw
) {
1774 IWL_DEBUG_INFO(priv
, "Cancel firmware reload based on "
1775 "module parameter setting\n");
1778 IWL_ERR(priv
, "On demand firmware reload\n");
1779 /* Set the FW error flag -- cleared on iwl_down */
1780 set_bit(STATUS_FW_ERROR
, &priv
->status
);
1781 wake_up_interruptible(&priv
->wait_command_queue
);
1783 * Keep the restart process from trying to send host
1784 * commands by clearing the INIT status bit
1786 clear_bit(STATUS_READY
, &priv
->status
);
1787 queue_work(priv
->workqueue
, &priv
->restart
);
1794 iwl_legacy_mac_change_interface(struct ieee80211_hw
*hw
,
1795 struct ieee80211_vif
*vif
,
1796 enum nl80211_iftype newtype
, bool newp2p
)
1798 struct iwl_priv
*priv
= hw
->priv
;
1799 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
1800 struct iwl_rxon_context
*tmp
;
1801 u32 interface_modes
;
1804 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1806 mutex_lock(&priv
->mutex
);
1808 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1810 if (!(interface_modes
& BIT(newtype
))) {
1815 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1816 for_each_context(priv
, tmp
) {
1824 * The current mode switch would be exclusive, but
1825 * another context is active ... refuse the switch.
1833 iwl_legacy_teardown_interface(priv
, vif
, true);
1834 vif
->type
= newtype
;
1835 err
= iwl_legacy_setup_interface(priv
, ctx
);
1838 * We've switched internally, but submitting to the
1839 * device may have failed for some reason. Mask this
1840 * error, because otherwise mac80211 will not switch
1841 * (and set the interface type back) and we'll be
1842 * out of sync with it.
1847 mutex_unlock(&priv
->mutex
);
1850 EXPORT_SYMBOL(iwl_legacy_mac_change_interface
);
1853 * On every watchdog tick we check (latest) time stamp. If it does not
1854 * change during timeout period and queue is not empty we reset firmware.
1856 static int iwl_legacy_check_stuck_queue(struct iwl_priv
*priv
, int cnt
)
1858 struct iwl_tx_queue
*txq
= &priv
->txq
[cnt
];
1859 struct iwl_queue
*q
= &txq
->q
;
1860 unsigned long timeout
;
1863 if (q
->read_ptr
== q
->write_ptr
) {
1864 txq
->time_stamp
= jiffies
;
1868 timeout
= txq
->time_stamp
+
1869 msecs_to_jiffies(priv
->cfg
->base_params
->wd_timeout
);
1871 if (time_after(jiffies
, timeout
)) {
1872 IWL_ERR(priv
, "Queue %d stuck for %u ms.\n",
1873 q
->id
, priv
->cfg
->base_params
->wd_timeout
);
1874 ret
= iwl_legacy_force_reset(priv
, IWL_FW_RESET
, false);
1875 return (ret
== -EAGAIN
) ? 0 : 1;
1882 * Making watchdog tick be a quarter of timeout assure we will
1883 * discover the queue hung between timeout and 1.25*timeout
1885 #define IWL_WD_TICK(timeout) ((timeout) / 4)
1888 * Watchdog timer callback, we check each tx queue for stuck, if if hung
1889 * we reset the firmware. If everything is fine just rearm the timer.
1891 void iwl_legacy_bg_watchdog(unsigned long data
)
1893 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
1895 unsigned long timeout
;
1897 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1900 timeout
= priv
->cfg
->base_params
->wd_timeout
;
1904 /* monitor and check for stuck cmd queue */
1905 if (iwl_legacy_check_stuck_queue(priv
, priv
->cmd_queue
))
1908 /* monitor and check for other stuck queues */
1909 if (iwl_legacy_is_any_associated(priv
)) {
1910 for (cnt
= 0; cnt
< priv
->hw_params
.max_txq_num
; cnt
++) {
1911 /* skip as we already checked the command queue */
1912 if (cnt
== priv
->cmd_queue
)
1914 if (iwl_legacy_check_stuck_queue(priv
, cnt
))
1919 mod_timer(&priv
->watchdog
, jiffies
+
1920 msecs_to_jiffies(IWL_WD_TICK(timeout
)));
1922 EXPORT_SYMBOL(iwl_legacy_bg_watchdog
);
1924 void iwl_legacy_setup_watchdog(struct iwl_priv
*priv
)
1926 unsigned int timeout
= priv
->cfg
->base_params
->wd_timeout
;
1929 mod_timer(&priv
->watchdog
,
1930 jiffies
+ msecs_to_jiffies(IWL_WD_TICK(timeout
)));
1932 del_timer(&priv
->watchdog
);
1934 EXPORT_SYMBOL(iwl_legacy_setup_watchdog
);
1937 * extended beacon time format
1938 * time in usec will be changed into a 32-bit value in extended:internal format
1939 * the extended part is the beacon counts
1940 * the internal part is the time in usec within one beacon interval
1943 iwl_legacy_usecs_to_beacons(struct iwl_priv
*priv
,
1944 u32 usec
, u32 beacon_interval
)
1948 u32 interval
= beacon_interval
* TIME_UNIT
;
1950 if (!interval
|| !usec
)
1953 quot
= (usec
/ interval
) &
1954 (iwl_legacy_beacon_time_mask_high(priv
,
1955 priv
->hw_params
.beacon_time_tsf_bits
) >>
1956 priv
->hw_params
.beacon_time_tsf_bits
);
1957 rem
= (usec
% interval
) & iwl_legacy_beacon_time_mask_low(priv
,
1958 priv
->hw_params
.beacon_time_tsf_bits
);
1960 return (quot
<< priv
->hw_params
.beacon_time_tsf_bits
) + rem
;
1962 EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons
);
1964 /* base is usually what we get from ucode with each received frame,
1965 * the same as HW timer counter counting down
1967 __le32
iwl_legacy_add_beacon_time(struct iwl_priv
*priv
, u32 base
,
1968 u32 addon
, u32 beacon_interval
)
1970 u32 base_low
= base
& iwl_legacy_beacon_time_mask_low(priv
,
1971 priv
->hw_params
.beacon_time_tsf_bits
);
1972 u32 addon_low
= addon
& iwl_legacy_beacon_time_mask_low(priv
,
1973 priv
->hw_params
.beacon_time_tsf_bits
);
1974 u32 interval
= beacon_interval
* TIME_UNIT
;
1975 u32 res
= (base
& iwl_legacy_beacon_time_mask_high(priv
,
1976 priv
->hw_params
.beacon_time_tsf_bits
)) +
1977 (addon
& iwl_legacy_beacon_time_mask_high(priv
,
1978 priv
->hw_params
.beacon_time_tsf_bits
));
1980 if (base_low
> addon_low
)
1981 res
+= base_low
- addon_low
;
1982 else if (base_low
< addon_low
) {
1983 res
+= interval
+ base_low
- addon_low
;
1984 res
+= (1 << priv
->hw_params
.beacon_time_tsf_bits
);
1986 res
+= (1 << priv
->hw_params
.beacon_time_tsf_bits
);
1988 return cpu_to_le32(res
);
1990 EXPORT_SYMBOL(iwl_legacy_add_beacon_time
);
1994 int iwl_legacy_pci_suspend(struct device
*device
)
1996 struct pci_dev
*pdev
= to_pci_dev(device
);
1997 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
2000 * This function is called when system goes into suspend state
2001 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2002 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2003 * it will not call apm_ops.stop() to stop the DMA operation.
2004 * Calling apm_ops.stop here to make sure we stop the DMA.
2006 iwl_legacy_apm_stop(priv
);
2010 EXPORT_SYMBOL(iwl_legacy_pci_suspend
);
2012 int iwl_legacy_pci_resume(struct device
*device
)
2014 struct pci_dev
*pdev
= to_pci_dev(device
);
2015 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
2016 bool hw_rfkill
= false;
2019 * We disable the RETRY_TIMEOUT register (0x41) to keep
2020 * PCI Tx retries from interfering with C3 CPU state.
2022 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
2024 iwl_legacy_enable_interrupts(priv
);
2026 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
2027 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
2031 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2033 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2035 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rfkill
);
2039 EXPORT_SYMBOL(iwl_legacy_pci_resume
);
2041 const struct dev_pm_ops iwl_legacy_pm_ops
= {
2042 .suspend
= iwl_legacy_pci_suspend
,
2043 .resume
= iwl_legacy_pci_resume
,
2044 .freeze
= iwl_legacy_pci_suspend
,
2045 .thaw
= iwl_legacy_pci_resume
,
2046 .poweroff
= iwl_legacy_pci_suspend
,
2047 .restore
= iwl_legacy_pci_resume
,
2049 EXPORT_SYMBOL(iwl_legacy_pm_ops
);
2051 #endif /* CONFIG_PM */
2054 iwl_legacy_update_qos(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
2056 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2059 if (!ctx
->is_active
)
2062 ctx
->qos_data
.def_qos_parm
.qos_flags
= 0;
2064 if (ctx
->qos_data
.qos_active
)
2065 ctx
->qos_data
.def_qos_parm
.qos_flags
|=
2066 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
2068 if (ctx
->ht
.enabled
)
2069 ctx
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
2071 IWL_DEBUG_QOS(priv
, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2072 ctx
->qos_data
.qos_active
,
2073 ctx
->qos_data
.def_qos_parm
.qos_flags
);
2075 iwl_legacy_send_cmd_pdu_async(priv
, ctx
->qos_cmd
,
2076 sizeof(struct iwl_qosparam_cmd
),
2077 &ctx
->qos_data
.def_qos_parm
, NULL
);
2081 * iwl_legacy_mac_config - mac80211 config callback
2083 int iwl_legacy_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2085 struct iwl_priv
*priv
= hw
->priv
;
2086 const struct iwl_channel_info
*ch_info
;
2087 struct ieee80211_conf
*conf
= &hw
->conf
;
2088 struct ieee80211_channel
*channel
= conf
->channel
;
2089 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
2090 struct iwl_rxon_context
*ctx
;
2091 unsigned long flags
= 0;
2094 int scan_active
= 0;
2095 bool ht_changed
[NUM_IWL_RXON_CTX
] = {};
2097 if (WARN_ON(!priv
->cfg
->ops
->legacy
))
2100 mutex_lock(&priv
->mutex
);
2102 IWL_DEBUG_MAC80211(priv
, "enter to channel %d changed 0x%X\n",
2103 channel
->hw_value
, changed
);
2105 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2106 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2108 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
2111 if (changed
& (IEEE80211_CONF_CHANGE_SMPS
|
2112 IEEE80211_CONF_CHANGE_CHANNEL
)) {
2113 /* mac80211 uses static for non-HT which is what we want */
2114 priv
->current_ht_config
.smps
= conf
->smps_mode
;
2117 * Recalculate chain counts.
2119 * If monitor mode is enabled then mac80211 will
2120 * set up the SM PS mode to OFF if an HT channel is
2123 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2124 for_each_context(priv
, ctx
)
2125 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
, ctx
);
2128 /* during scanning mac80211 will delay channel setting until
2129 * scan finish with changed = 0
2131 if (!changed
|| (changed
& IEEE80211_CONF_CHANGE_CHANNEL
)) {
2135 ch
= channel
->hw_value
;
2136 ch_info
= iwl_legacy_get_channel_info(priv
, channel
->band
, ch
);
2137 if (!iwl_legacy_is_channel_valid(ch_info
)) {
2138 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
2143 spin_lock_irqsave(&priv
->lock
, flags
);
2145 for_each_context(priv
, ctx
) {
2146 /* Configure HT40 channels */
2147 if (ctx
->ht
.enabled
!= conf_is_ht(conf
)) {
2148 ctx
->ht
.enabled
= conf_is_ht(conf
);
2149 ht_changed
[ctx
->ctxid
] = true;
2151 if (ctx
->ht
.enabled
) {
2152 if (conf_is_ht40_minus(conf
)) {
2153 ctx
->ht
.extension_chan_offset
=
2154 IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
2155 ctx
->ht
.is_40mhz
= true;
2156 } else if (conf_is_ht40_plus(conf
)) {
2157 ctx
->ht
.extension_chan_offset
=
2158 IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
2159 ctx
->ht
.is_40mhz
= true;
2161 ctx
->ht
.extension_chan_offset
=
2162 IEEE80211_HT_PARAM_CHA_SEC_NONE
;
2163 ctx
->ht
.is_40mhz
= false;
2166 ctx
->ht
.is_40mhz
= false;
2169 * Default to no protection. Protection mode will
2170 * later be set from BSS config in iwl_ht_conf
2172 ctx
->ht
.protection
=
2173 IEEE80211_HT_OP_MODE_PROTECTION_NONE
;
2175 /* if we are switching from ht to 2.4 clear flags
2176 * from any ht related info since 2.4 does not
2178 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
2179 ctx
->staging
.flags
= 0;
2181 iwl_legacy_set_rxon_channel(priv
, channel
, ctx
);
2182 iwl_legacy_set_rxon_ht(priv
, ht_conf
);
2184 iwl_legacy_set_flags_for_band(priv
, ctx
, channel
->band
,
2188 spin_unlock_irqrestore(&priv
->lock
, flags
);
2190 if (priv
->cfg
->ops
->legacy
->update_bcast_stations
)
2192 priv
->cfg
->ops
->legacy
->update_bcast_stations(priv
);
2195 /* The list of supported rates and rate mask can be different
2196 * for each band; since the band may have changed, reset
2197 * the rate mask to what mac80211 lists */
2198 iwl_legacy_set_rate(priv
);
2201 if (changed
& (IEEE80211_CONF_CHANGE_PS
|
2202 IEEE80211_CONF_CHANGE_IDLE
)) {
2203 ret
= iwl_legacy_power_update_mode(priv
, false);
2205 IWL_DEBUG_MAC80211(priv
, "Error setting sleep level\n");
2208 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
2209 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
2210 priv
->tx_power_user_lmt
, conf
->power_level
);
2212 iwl_legacy_set_tx_power(priv
, conf
->power_level
, false);
2215 if (!iwl_legacy_is_ready(priv
)) {
2216 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2223 for_each_context(priv
, ctx
) {
2224 if (memcmp(&ctx
->active
, &ctx
->staging
, sizeof(ctx
->staging
)))
2225 iwl_legacy_commit_rxon(priv
, ctx
);
2227 IWL_DEBUG_INFO(priv
,
2228 "Not re-sending same RXON configuration.\n");
2229 if (ht_changed
[ctx
->ctxid
])
2230 iwl_legacy_update_qos(priv
, ctx
);
2234 IWL_DEBUG_MAC80211(priv
, "leave\n");
2235 mutex_unlock(&priv
->mutex
);
2238 EXPORT_SYMBOL(iwl_legacy_mac_config
);
2240 void iwl_legacy_mac_reset_tsf(struct ieee80211_hw
*hw
)
2242 struct iwl_priv
*priv
= hw
->priv
;
2243 unsigned long flags
;
2244 /* IBSS can only be the IWL_RXON_CTX_BSS context */
2245 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
2247 if (WARN_ON(!priv
->cfg
->ops
->legacy
))
2250 mutex_lock(&priv
->mutex
);
2251 IWL_DEBUG_MAC80211(priv
, "enter\n");
2253 spin_lock_irqsave(&priv
->lock
, flags
);
2254 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_config
));
2255 spin_unlock_irqrestore(&priv
->lock
, flags
);
2257 spin_lock_irqsave(&priv
->lock
, flags
);
2259 /* new association get rid of ibss beacon skb */
2260 if (priv
->beacon_skb
)
2261 dev_kfree_skb(priv
->beacon_skb
);
2263 priv
->beacon_skb
= NULL
;
2265 priv
->timestamp
= 0;
2267 spin_unlock_irqrestore(&priv
->lock
, flags
);
2269 iwl_legacy_scan_cancel_timeout(priv
, 100);
2270 if (!iwl_legacy_is_ready_rf(priv
)) {
2271 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2272 mutex_unlock(&priv
->mutex
);
2276 /* we are restarting association process
2277 * clear RXON_FILTER_ASSOC_MSK bit
2279 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2280 iwl_legacy_commit_rxon(priv
, ctx
);
2282 iwl_legacy_set_rate(priv
);
2284 mutex_unlock(&priv
->mutex
);
2286 IWL_DEBUG_MAC80211(priv
, "leave\n");
2288 EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf
);
2290 static void iwl_legacy_ht_conf(struct iwl_priv
*priv
,
2291 struct ieee80211_vif
*vif
)
2293 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
2294 struct ieee80211_sta
*sta
;
2295 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
2296 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
2298 IWL_DEBUG_ASSOC(priv
, "enter:\n");
2300 if (!ctx
->ht
.enabled
)
2303 ctx
->ht
.protection
=
2304 bss_conf
->ht_operation_mode
& IEEE80211_HT_OP_MODE_PROTECTION
;
2305 ctx
->ht
.non_gf_sta_present
=
2306 !!(bss_conf
->ht_operation_mode
&
2307 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
2309 ht_conf
->single_chain_sufficient
= false;
2311 switch (vif
->type
) {
2312 case NL80211_IFTYPE_STATION
:
2314 sta
= ieee80211_find_sta(vif
, bss_conf
->bssid
);
2316 struct ieee80211_sta_ht_cap
*ht_cap
= &sta
->ht_cap
;
2319 maxstreams
= (ht_cap
->mcs
.tx_params
&
2320 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK
)
2321 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
;
2324 if ((ht_cap
->mcs
.rx_mask
[1] == 0) &&
2325 (ht_cap
->mcs
.rx_mask
[2] == 0))
2326 ht_conf
->single_chain_sufficient
= true;
2327 if (maxstreams
<= 1)
2328 ht_conf
->single_chain_sufficient
= true;
2331 * If at all, this can only happen through a race
2332 * when the AP disconnects us while we're still
2333 * setting up the connection, in that case mac80211
2334 * will soon tell us about that.
2336 ht_conf
->single_chain_sufficient
= true;
2340 case NL80211_IFTYPE_ADHOC
:
2341 ht_conf
->single_chain_sufficient
= true;
2347 IWL_DEBUG_ASSOC(priv
, "leave\n");
2350 static inline void iwl_legacy_set_no_assoc(struct iwl_priv
*priv
,
2351 struct ieee80211_vif
*vif
)
2353 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
2356 * inform the ucode that there is no longer an
2357 * association and that no more packets should be
2360 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2361 ctx
->staging
.assoc_id
= 0;
2362 iwl_legacy_commit_rxon(priv
, ctx
);
2365 static void iwl_legacy_beacon_update(struct ieee80211_hw
*hw
,
2366 struct ieee80211_vif
*vif
)
2368 struct iwl_priv
*priv
= hw
->priv
;
2369 unsigned long flags
;
2371 struct sk_buff
*skb
= ieee80211_beacon_get(hw
, vif
);
2376 IWL_DEBUG_MAC80211(priv
, "enter\n");
2378 lockdep_assert_held(&priv
->mutex
);
2380 if (!priv
->beacon_ctx
) {
2381 IWL_ERR(priv
, "update beacon but no beacon context!\n");
2386 spin_lock_irqsave(&priv
->lock
, flags
);
2388 if (priv
->beacon_skb
)
2389 dev_kfree_skb(priv
->beacon_skb
);
2391 priv
->beacon_skb
= skb
;
2393 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
2394 priv
->timestamp
= le64_to_cpu(timestamp
);
2396 IWL_DEBUG_MAC80211(priv
, "leave\n");
2397 spin_unlock_irqrestore(&priv
->lock
, flags
);
2399 if (!iwl_legacy_is_ready_rf(priv
)) {
2400 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2404 priv
->cfg
->ops
->legacy
->post_associate(priv
);
2407 void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw
*hw
,
2408 struct ieee80211_vif
*vif
,
2409 struct ieee80211_bss_conf
*bss_conf
,
2412 struct iwl_priv
*priv
= hw
->priv
;
2413 struct iwl_rxon_context
*ctx
= iwl_legacy_rxon_ctx_from_vif(vif
);
2416 if (WARN_ON(!priv
->cfg
->ops
->legacy
))
2419 IWL_DEBUG_MAC80211(priv
, "changes = 0x%X\n", changes
);
2421 if (!iwl_legacy_is_alive(priv
))
2424 mutex_lock(&priv
->mutex
);
2426 if (changes
& BSS_CHANGED_QOS
) {
2427 unsigned long flags
;
2429 spin_lock_irqsave(&priv
->lock
, flags
);
2430 ctx
->qos_data
.qos_active
= bss_conf
->qos
;
2431 iwl_legacy_update_qos(priv
, ctx
);
2432 spin_unlock_irqrestore(&priv
->lock
, flags
);
2435 if (changes
& BSS_CHANGED_BEACON_ENABLED
) {
2437 * the add_interface code must make sure we only ever
2438 * have a single interface that could be beaconing at
2441 if (vif
->bss_conf
.enable_beacon
)
2442 priv
->beacon_ctx
= ctx
;
2444 priv
->beacon_ctx
= NULL
;
2447 if (changes
& BSS_CHANGED_BSSID
) {
2448 IWL_DEBUG_MAC80211(priv
, "BSSID %pM\n", bss_conf
->bssid
);
2451 * If there is currently a HW scan going on in the
2452 * background then we need to cancel it else the RXON
2453 * below/in post_associate will fail.
2455 if (iwl_legacy_scan_cancel_timeout(priv
, 100)) {
2457 "Aborted scan still in progress after 100ms\n");
2458 IWL_DEBUG_MAC80211(priv
,
2459 "leaving - scan abort failed.\n");
2460 mutex_unlock(&priv
->mutex
);
2464 /* mac80211 only sets assoc when in STATION mode */
2465 if (vif
->type
== NL80211_IFTYPE_ADHOC
|| bss_conf
->assoc
) {
2466 memcpy(ctx
->staging
.bssid_addr
,
2467 bss_conf
->bssid
, ETH_ALEN
);
2469 /* currently needed in a few places */
2470 memcpy(priv
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
2472 ctx
->staging
.filter_flags
&=
2473 ~RXON_FILTER_ASSOC_MSK
;
2479 * This needs to be after setting the BSSID in case
2480 * mac80211 decides to do both changes at once because
2481 * it will invoke post_associate.
2483 if (vif
->type
== NL80211_IFTYPE_ADHOC
&& changes
& BSS_CHANGED_BEACON
)
2484 iwl_legacy_beacon_update(hw
, vif
);
2486 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
2487 IWL_DEBUG_MAC80211(priv
, "ERP_PREAMBLE %d\n",
2488 bss_conf
->use_short_preamble
);
2489 if (bss_conf
->use_short_preamble
)
2490 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2492 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2495 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
2496 IWL_DEBUG_MAC80211(priv
,
2497 "ERP_CTS %d\n", bss_conf
->use_cts_prot
);
2498 if (bss_conf
->use_cts_prot
&&
2499 (priv
->band
!= IEEE80211_BAND_5GHZ
))
2500 ctx
->staging
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
2502 ctx
->staging
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
2503 if (bss_conf
->use_cts_prot
)
2504 ctx
->staging
.flags
|= RXON_FLG_SELF_CTS_EN
;
2506 ctx
->staging
.flags
&= ~RXON_FLG_SELF_CTS_EN
;
2509 if (changes
& BSS_CHANGED_BASIC_RATES
) {
2510 /* XXX use this information
2512 * To do that, remove code from iwl_legacy_set_rate() and put something
2516 ctx->staging.ofdm_basic_rates =
2517 bss_conf->basic_rates;
2519 ctx->staging.ofdm_basic_rates =
2520 bss_conf->basic_rates >> 4;
2521 ctx->staging.cck_basic_rates =
2522 bss_conf->basic_rates & 0xF;
2526 if (changes
& BSS_CHANGED_HT
) {
2527 iwl_legacy_ht_conf(priv
, vif
);
2529 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2530 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
, ctx
);
2533 if (changes
& BSS_CHANGED_ASSOC
) {
2534 IWL_DEBUG_MAC80211(priv
, "ASSOC %d\n", bss_conf
->assoc
);
2535 if (bss_conf
->assoc
) {
2536 priv
->timestamp
= bss_conf
->timestamp
;
2538 if (!iwl_legacy_is_rfkill(priv
))
2539 priv
->cfg
->ops
->legacy
->post_associate(priv
);
2541 iwl_legacy_set_no_assoc(priv
, vif
);
2544 if (changes
&& iwl_legacy_is_associated_ctx(ctx
) && bss_conf
->aid
) {
2545 IWL_DEBUG_MAC80211(priv
, "Changes (%#x) while associated\n",
2547 ret
= iwl_legacy_send_rxon_assoc(priv
, ctx
);
2549 /* Sync active_rxon with latest change. */
2550 memcpy((void *)&ctx
->active
,
2552 sizeof(struct iwl_legacy_rxon_cmd
));
2556 if (changes
& BSS_CHANGED_BEACON_ENABLED
) {
2557 if (vif
->bss_conf
.enable_beacon
) {
2558 memcpy(ctx
->staging
.bssid_addr
,
2559 bss_conf
->bssid
, ETH_ALEN
);
2560 memcpy(priv
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
2561 priv
->cfg
->ops
->legacy
->config_ap(priv
);
2563 iwl_legacy_set_no_assoc(priv
, vif
);
2566 if (changes
& BSS_CHANGED_IBSS
) {
2567 ret
= priv
->cfg
->ops
->legacy
->manage_ibss_station(priv
, vif
,
2568 bss_conf
->ibss_joined
);
2570 IWL_ERR(priv
, "failed to %s IBSS station %pM\n",
2571 bss_conf
->ibss_joined
? "add" : "remove",
2575 mutex_unlock(&priv
->mutex
);
2577 IWL_DEBUG_MAC80211(priv
, "leave\n");
2579 EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed
);
2581 irqreturn_t
iwl_legacy_isr(int irq
, void *data
)
2583 struct iwl_priv
*priv
= data
;
2584 u32 inta
, inta_mask
;
2586 unsigned long flags
;
2590 spin_lock_irqsave(&priv
->lock
, flags
);
2592 /* Disable (but don't clear!) interrupts here to avoid
2593 * back-to-back ISRs and sporadic interrupts from our NIC.
2594 * If we have something to service, the tasklet will re-enable ints.
2595 * If we *don't* have something, we'll re-enable before leaving here. */
2596 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
2597 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
2599 /* Discover which interrupts are active/pending */
2600 inta
= iwl_read32(priv
, CSR_INT
);
2601 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
2603 /* Ignore interrupt if there's nothing in NIC to service.
2604 * This may be due to IRQ shared with another device,
2605 * or due to sporadic interrupts thrown from our NIC. */
2606 if (!inta
&& !inta_fh
) {
2608 "Ignore interrupt, inta == 0, inta_fh == 0\n");
2612 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
2613 /* Hardware disappeared. It might have already raised
2615 IWL_WARN(priv
, "HARDWARE GONE?? INTA == 0x%08x\n", inta
);
2619 IWL_DEBUG_ISR(priv
, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2620 inta
, inta_mask
, inta_fh
);
2622 inta
&= ~CSR_INT_BIT_SCD
;
2624 /* iwl_irq_tasklet() will service interrupts and re-enable them */
2625 if (likely(inta
|| inta_fh
))
2626 tasklet_schedule(&priv
->irq_tasklet
);
2629 spin_unlock_irqrestore(&priv
->lock
, flags
);
2633 /* re-enable interrupts here since we don't have anything to service. */
2634 /* only Re-enable if diabled by irq */
2635 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
2636 iwl_legacy_enable_interrupts(priv
);
2637 spin_unlock_irqrestore(&priv
->lock
, flags
);
2640 EXPORT_SYMBOL(iwl_legacy_isr
);
2643 * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
2646 void iwl_legacy_tx_cmd_protection(struct iwl_priv
*priv
,
2647 struct ieee80211_tx_info
*info
,
2648 __le16 fc
, __le32
*tx_flags
)
2650 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
2651 *tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2652 *tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2653 *tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2655 if (!ieee80211_is_mgmt(fc
))
2658 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
2659 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
2660 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
2661 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
2662 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
2663 *tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2664 *tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2667 } else if (info
->control
.rates
[0].flags
&
2668 IEEE80211_TX_RC_USE_CTS_PROTECT
) {
2669 *tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2670 *tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2671 *tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2674 EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection
);