1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/mac80211.h>
45 #include <asm/div64.h>
47 #include "iwl-eeprom.h"
51 #include "iwl-helpers.h"
53 #include "iwl-calib.h"
56 /******************************************************************************
60 ******************************************************************************/
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
84 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
85 MODULE_VERSION(DRV_VERSION
);
86 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
95 /**************************************************************/
99 static void iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
101 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
104 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
106 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
111 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
112 * @priv: staging_rxon is compared to active_rxon
114 * If the RXON structure is changing enough to require a new tune,
115 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
116 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
118 static int iwl_full_rxon_required(struct iwl_priv
*priv
)
121 /* These items are only settable from the full RXON command */
122 if (!(iwl_is_associated(priv
)) ||
123 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
124 priv
->active_rxon
.bssid_addr
) ||
125 compare_ether_addr(priv
->staging_rxon
.node_addr
,
126 priv
->active_rxon
.node_addr
) ||
127 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
128 priv
->active_rxon
.wlap_bssid_addr
) ||
129 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
130 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
131 (priv
->staging_rxon
.air_propagation
!=
132 priv
->active_rxon
.air_propagation
) ||
133 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
134 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
135 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
136 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
137 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
140 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
141 * be updated with the RXON_ASSOC command -- however only some
142 * flag transitions are allowed using RXON_ASSOC */
144 /* Check if we are not switching bands */
145 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
146 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
149 /* Check if we are switching association toggle */
150 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
151 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
158 * iwl_commit_rxon - commit staging_rxon to hardware
160 * The RXON command in staging_rxon is committed to the hardware and
161 * the active_rxon structure is updated with the new data. This
162 * function correctly transitions out of the RXON_ASSOC_MSK state if
163 * a HW tune is required based on the RXON structure changes.
165 static int iwl_commit_rxon(struct iwl_priv
*priv
)
167 /* cast away the const for active_rxon in this function */
168 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
171 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
173 if (!iwl_is_alive(priv
))
176 /* always get timestamp with Rx frame */
177 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
178 /* allow CTS-to-self if possible. this is relevant only for
179 * 5000, but will not damage 4965 */
180 priv
->staging_rxon
.flags
|= RXON_FLG_SELF_CTS_EN
;
182 ret
= iwl_agn_check_rxon_cmd(&priv
->staging_rxon
);
184 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
188 /* If we don't need to send a full RXON, we can use
189 * iwl_rxon_assoc_cmd which is used to reconfigure filter
190 * and other flags for the current radio configuration. */
191 if (!iwl_full_rxon_required(priv
)) {
192 ret
= iwl_send_rxon_assoc(priv
);
194 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret
);
198 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
202 /* station table will be cleared */
203 priv
->assoc_station_added
= 0;
205 /* If we are currently associated and the new config requires
206 * an RXON_ASSOC and the new config wants the associated mask enabled,
207 * we must clear the associated from the active configuration
208 * before we apply the new config */
209 if (iwl_is_associated(priv
) && new_assoc
) {
210 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
211 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
213 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
214 sizeof(struct iwl_rxon_cmd
),
217 /* If the mask clearing failed then we set
218 * active_rxon back to what it was previously */
220 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
221 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret
);
226 IWL_DEBUG_INFO("Sending RXON\n"
227 "* with%s RXON_FILTER_ASSOC_MSK\n"
230 (new_assoc
? "" : "out"),
231 le16_to_cpu(priv
->staging_rxon
.channel
),
232 priv
->staging_rxon
.bssid_addr
);
234 iwl_set_rxon_hwcrypto(priv
, !priv
->hw_params
.sw_crypto
);
236 /* Apply the new configuration
237 * RXON unassoc clears the station table in uCode, send it before
238 * we add the bcast station. If assoc bit is set, we will send RXON
239 * after having added the bcast and bssid station.
242 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
243 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
245 IWL_ERROR("Error setting new RXON (%d)\n", ret
);
248 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
251 iwl_clear_stations_table(priv
);
253 if (!priv
->error_recovering
)
254 priv
->start_calib
= 0;
256 /* Add the broadcast address so we can send broadcast frames */
257 if (iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0) ==
258 IWL_INVALID_STATION
) {
259 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
263 /* If we have set the ASSOC_MSK and we are in BSS mode then
264 * add the IWL_AP_ID to the station rate table */
266 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
267 ret
= iwl_rxon_add_station(priv
,
268 priv
->active_rxon
.bssid_addr
, 1);
269 if (ret
== IWL_INVALID_STATION
) {
270 IWL_ERROR("Error adding AP address for TX.\n");
273 priv
->assoc_station_added
= 1;
274 if (priv
->default_wep_key
&&
275 iwl_send_static_wepkey_cmd(priv
, 0))
276 IWL_ERROR("Could not send WEP static key.\n");
279 /* Apply the new configuration
280 * RXON assoc doesn't clear the station table in uCode,
282 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
283 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
285 IWL_ERROR("Error setting new RXON (%d)\n", ret
);
288 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
291 iwl_init_sensitivity(priv
);
293 /* If we issue a new RXON command which required a tune then we must
294 * send a new TXPOWER command or we won't be able to Tx any frames */
295 ret
= iwl_set_tx_power(priv
, priv
->tx_power_user_lmt
, true);
297 IWL_ERROR("Error sending TX power (%d)\n", ret
);
304 void iwl_update_chain_flags(struct iwl_priv
*priv
)
307 iwl_set_rxon_chain(priv
);
308 iwl_commit_rxon(priv
);
311 static int iwl_send_bt_config(struct iwl_priv
*priv
)
313 struct iwl_bt_cmd bt_cmd
= {
321 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
322 sizeof(struct iwl_bt_cmd
), &bt_cmd
);
325 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
327 struct list_head
*element
;
329 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
332 while (!list_empty(&priv
->free_frames
)) {
333 element
= priv
->free_frames
.next
;
335 kfree(list_entry(element
, struct iwl_frame
, list
));
336 priv
->frames_count
--;
339 if (priv
->frames_count
) {
340 IWL_WARNING("%d frames still in use. Did we lose one?\n",
342 priv
->frames_count
= 0;
346 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
348 struct iwl_frame
*frame
;
349 struct list_head
*element
;
350 if (list_empty(&priv
->free_frames
)) {
351 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
353 IWL_ERROR("Could not allocate frame!\n");
357 priv
->frames_count
++;
361 element
= priv
->free_frames
.next
;
363 return list_entry(element
, struct iwl_frame
, list
);
366 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
368 memset(frame
, 0, sizeof(*frame
));
369 list_add(&frame
->list
, &priv
->free_frames
);
372 static unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
373 struct ieee80211_hdr
*hdr
,
376 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
377 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
378 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
381 if (priv
->ibss_beacon
->len
> left
)
384 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
386 return priv
->ibss_beacon
->len
;
389 static u8
iwl_rate_get_lowest_plcp(struct iwl_priv
*priv
)
395 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
396 rate_mask
= priv
->active_rate_basic
& IWL_CCK_RATES_MASK
;
398 rate_mask
= priv
->active_rate_basic
& IWL_OFDM_RATES_MASK
;
400 /* Find lowest valid rate */
401 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
402 i
= iwl_rates
[i
].next_ieee
) {
403 if (rate_mask
& (1 << i
))
404 return iwl_rates
[i
].plcp
;
407 /* No valid rate was found. Assign the lowest one */
408 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
409 return IWL_RATE_1M_PLCP
;
411 return IWL_RATE_6M_PLCP
;
414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
415 struct iwl_frame
*frame
, u8 rate
)
417 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
418 unsigned int frame_size
;
420 tx_beacon_cmd
= &frame
->u
.beacon
;
421 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
423 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
424 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
426 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
427 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
429 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
430 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
432 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
433 tx_beacon_cmd
->tx
.rate_n_flags
=
434 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
436 tx_beacon_cmd
->tx
.rate_n_flags
=
437 iwl_hw_set_rate_n_flags(rate
, 0);
439 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
441 TX_CMD_FLG_STA_RATE_MSK
;
443 return sizeof(*tx_beacon_cmd
) + frame_size
;
445 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
447 struct iwl_frame
*frame
;
448 unsigned int frame_size
;
452 frame
= iwl_get_free_frame(priv
);
455 IWL_ERROR("Could not obtain free frame buffer for beacon "
460 rate
= iwl_rate_get_lowest_plcp(priv
);
462 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
464 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
467 iwl_free_frame(priv
, frame
);
472 /******************************************************************************
474 * Misc. internal state and helper functions
476 ******************************************************************************/
478 static void iwl_ht_conf(struct iwl_priv
*priv
,
479 struct ieee80211_bss_conf
*bss_conf
)
481 struct ieee80211_sta_ht_cap
*ht_conf
;
482 struct iwl_ht_info
*iwl_conf
= &priv
->current_ht_config
;
483 struct ieee80211_sta
*sta
;
485 IWL_DEBUG_MAC80211("enter: \n");
487 if (!iwl_conf
->is_ht
)
492 * It is totally wrong to base global information on something
493 * that is valid only when associated, alas, this driver works
494 * that way and I don't know how to fix it.
498 sta
= ieee80211_find_sta(priv
->hw
, priv
->bssid
);
503 ht_conf
= &sta
->ht_cap
;
505 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_20
)
506 iwl_conf
->sgf
|= HT_SHORT_GI_20MHZ
;
507 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_40
)
508 iwl_conf
->sgf
|= HT_SHORT_GI_40MHZ
;
510 iwl_conf
->is_green_field
= !!(ht_conf
->cap
& IEEE80211_HT_CAP_GRN_FLD
);
511 iwl_conf
->max_amsdu_size
=
512 !!(ht_conf
->cap
& IEEE80211_HT_CAP_MAX_AMSDU
);
514 iwl_conf
->supported_chan_width
=
515 !!(ht_conf
->cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
);
518 * XXX: The HT configuration needs to be moved into iwl_mac_config()
519 * to be done there correctly.
522 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
523 if (priv
->hw
->conf
.ht
.channel_type
== NL80211_CHAN_HT40MINUS
)
524 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
525 else if(priv
->hw
->conf
.ht
.channel_type
== NL80211_CHAN_HT40PLUS
)
526 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
528 /* If no above or below channel supplied disable FAT channel */
529 if (iwl_conf
->extension_chan_offset
!= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
&&
530 iwl_conf
->extension_chan_offset
!= IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
531 iwl_conf
->supported_chan_width
= 0;
533 iwl_conf
->sm_ps
= (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_SM_PS
) >> 2);
535 memcpy(&iwl_conf
->mcs
, &ht_conf
->mcs
, 16);
537 iwl_conf
->tx_chan_width
= iwl_conf
->supported_chan_width
!= 0;
538 iwl_conf
->ht_protection
=
539 bss_conf
->ht
.operation_mode
& IEEE80211_HT_OP_MODE_PROTECTION
;
540 iwl_conf
->non_GF_STA_present
=
541 !!(bss_conf
->ht
.operation_mode
& IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
545 IWL_DEBUG_MAC80211("leave\n");
551 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
553 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
556 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
558 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
559 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
560 priv
->qos_data
.def_qos_parm
.qos_flags
|=
561 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
562 if (priv
->qos_data
.qos_active
)
563 priv
->qos_data
.def_qos_parm
.qos_flags
|=
564 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
566 if (priv
->current_ht_config
.is_ht
)
567 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
569 if (force
|| iwl_is_associated(priv
)) {
570 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
571 priv
->qos_data
.qos_active
,
572 priv
->qos_data
.def_qos_parm
.qos_flags
);
574 iwl_send_cmd_pdu_async(priv
, REPLY_QOS_PARAM
,
575 sizeof(struct iwl_qosparam_cmd
),
576 &priv
->qos_data
.def_qos_parm
, NULL
);
580 #define MAX_UCODE_BEACON_INTERVAL 4096
582 static u16
iwl_adjust_beacon_interval(u16 beacon_val
)
585 u16 beacon_factor
= 0;
587 beacon_factor
= (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
588 / MAX_UCODE_BEACON_INTERVAL
;
589 new_val
= beacon_val
/ beacon_factor
;
594 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
597 s32 interval_tm
, rem
;
599 struct ieee80211_conf
*conf
= NULL
;
602 conf
= ieee80211_get_hw_conf(priv
->hw
);
604 spin_lock_irqsave(&priv
->lock
, flags
);
605 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
606 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
608 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
609 beacon_int
= iwl_adjust_beacon_interval(priv
->beacon_int
);
610 priv
->rxon_timing
.atim_window
= 0;
612 beacon_int
= iwl_adjust_beacon_interval(conf
->beacon_int
);
614 /* TODO: we need to get atim_window from upper stack
615 * for now we set to 0 */
616 priv
->rxon_timing
.atim_window
= 0;
619 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
621 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
622 interval_tm
= beacon_int
* 1024;
623 rem
= do_div(tsf
, interval_tm
);
624 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
626 spin_unlock_irqrestore(&priv
->lock
, flags
);
627 IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
628 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
629 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
630 le16_to_cpu(priv
->rxon_timing
.atim_window
));
633 static void iwl_set_flags_for_band(struct iwl_priv
*priv
,
634 enum ieee80211_band band
)
636 if (band
== IEEE80211_BAND_5GHZ
) {
637 priv
->staging_rxon
.flags
&=
638 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
640 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
642 /* Copied from iwl_post_associate() */
643 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
644 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
646 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
648 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
649 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
651 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
652 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
653 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
658 * initialize rxon structure with default values from eeprom
660 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
, int mode
)
662 const struct iwl_channel_info
*ch_info
;
664 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
667 case NL80211_IFTYPE_AP
:
668 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
671 case NL80211_IFTYPE_STATION
:
672 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
673 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
676 case NL80211_IFTYPE_ADHOC
:
677 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
678 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
679 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
680 RXON_FILTER_ACCEPT_GRP_MSK
;
683 case NL80211_IFTYPE_MONITOR
:
684 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
685 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
686 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
689 IWL_ERROR("Unsupported interface type %d\n", mode
);
694 /* TODO: Figure out when short_preamble would be set and cache from
696 if (!hw_to_local(priv
->hw
)->short_preamble
)
697 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
699 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
702 ch_info
= iwl_get_channel_info(priv
, priv
->band
,
703 le16_to_cpu(priv
->active_rxon
.channel
));
706 ch_info
= &priv
->channel_info
[0];
709 * in some case A channels are all non IBSS
710 * in this case force B/G channel
712 if ((priv
->iw_mode
== NL80211_IFTYPE_ADHOC
) &&
713 !(is_channel_ibss(ch_info
)))
714 ch_info
= &priv
->channel_info
[0];
716 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
717 priv
->band
= ch_info
->band
;
719 iwl_set_flags_for_band(priv
, priv
->band
);
721 priv
->staging_rxon
.ofdm_basic_rates
=
722 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
723 priv
->staging_rxon
.cck_basic_rates
=
724 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
726 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
727 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
728 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
729 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
730 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
731 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
732 iwl_set_rxon_chain(priv
);
735 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
737 iwl_connection_init_rx_config(priv
, mode
);
738 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
740 iwl_clear_stations_table(priv
);
742 /* dont commit rxon if rf-kill is on*/
743 if (!iwl_is_ready_rf(priv
))
746 cancel_delayed_work(&priv
->scan_check
);
747 if (iwl_scan_cancel_timeout(priv
, 100)) {
748 IWL_WARNING("Aborted scan still in progress after 100ms\n");
749 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
753 iwl_commit_rxon(priv
);
758 static void iwl_set_rate(struct iwl_priv
*priv
)
760 const struct ieee80211_supported_band
*hw
= NULL
;
761 struct ieee80211_rate
*rate
;
764 hw
= iwl_get_hw_mode(priv
, priv
->band
);
766 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
770 priv
->active_rate
= 0;
771 priv
->active_rate_basic
= 0;
773 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
774 rate
= &(hw
->bitrates
[i
]);
775 if (rate
->hw_value
< IWL_RATE_COUNT
)
776 priv
->active_rate
|= (1 << rate
->hw_value
);
779 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
780 priv
->active_rate
, priv
->active_rate_basic
);
783 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
784 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
787 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
788 priv
->staging_rxon
.cck_basic_rates
=
789 ((priv
->active_rate_basic
&
790 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
792 priv
->staging_rxon
.cck_basic_rates
=
793 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
795 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
796 priv
->staging_rxon
.ofdm_basic_rates
=
797 ((priv
->active_rate_basic
&
798 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
799 IWL_FIRST_OFDM_RATE
) & 0xFF;
801 priv
->staging_rxon
.ofdm_basic_rates
=
802 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
806 /******************************************************************************
808 * Generic RX handler implementations
810 ******************************************************************************/
811 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
812 struct iwl_rx_mem_buffer
*rxb
)
814 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
815 struct iwl_alive_resp
*palive
;
816 struct delayed_work
*pwork
;
818 palive
= &pkt
->u
.alive_frame
;
820 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
822 palive
->is_valid
, palive
->ver_type
,
823 palive
->ver_subtype
);
825 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
826 IWL_DEBUG_INFO("Initialization Alive received.\n");
827 memcpy(&priv
->card_alive_init
,
829 sizeof(struct iwl_init_alive_resp
));
830 pwork
= &priv
->init_alive_start
;
832 IWL_DEBUG_INFO("Runtime Alive received.\n");
833 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
834 sizeof(struct iwl_alive_resp
));
835 pwork
= &priv
->alive_start
;
838 /* We delay the ALIVE response by 5ms to
839 * give the HW RF Kill time to activate... */
840 if (palive
->is_valid
== UCODE_VALID_OK
)
841 queue_delayed_work(priv
->workqueue
, pwork
,
842 msecs_to_jiffies(5));
844 IWL_WARNING("uCode did not respond OK.\n");
847 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
848 struct iwl_rx_mem_buffer
*rxb
)
850 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
852 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
853 "seq 0x%04X ser 0x%08X\n",
854 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
855 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
856 pkt
->u
.err_resp
.cmd_id
,
857 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
858 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
861 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
863 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
865 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
866 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
867 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
868 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
869 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
870 rxon
->channel
= csa
->channel
;
871 priv
->staging_rxon
.channel
= csa
->channel
;
874 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
875 struct iwl_rx_mem_buffer
*rxb
)
877 #ifdef CONFIG_IWLWIFI_DEBUG
878 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
879 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
880 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
881 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
885 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
886 struct iwl_rx_mem_buffer
*rxb
)
888 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
889 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
890 "notification for %s:\n",
891 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
892 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
895 static void iwl_bg_beacon_update(struct work_struct
*work
)
897 struct iwl_priv
*priv
=
898 container_of(work
, struct iwl_priv
, beacon_update
);
899 struct sk_buff
*beacon
;
901 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
902 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
905 IWL_ERROR("update beacon failed\n");
909 mutex_lock(&priv
->mutex
);
910 /* new beacon skb is allocated every time; dispose previous.*/
911 if (priv
->ibss_beacon
)
912 dev_kfree_skb(priv
->ibss_beacon
);
914 priv
->ibss_beacon
= beacon
;
915 mutex_unlock(&priv
->mutex
);
917 iwl_send_beacon_cmd(priv
);
921 * iwl_bg_statistics_periodic - Timer callback to queue statistics
923 * This callback is provided in order to send a statistics request.
925 * This timer function is continually reset to execute within
926 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
927 * was received. We need to ensure we receive the statistics in order
928 * to update the temperature used for calibrating the TXPOWER.
930 static void iwl_bg_statistics_periodic(unsigned long data
)
932 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
934 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
937 /* dont send host command if rf-kill is on */
938 if (!iwl_is_ready_rf(priv
))
941 iwl_send_statistics_request(priv
, CMD_ASYNC
);
944 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
945 struct iwl_rx_mem_buffer
*rxb
)
947 #ifdef CONFIG_IWLWIFI_DEBUG
948 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
949 struct iwl4965_beacon_notif
*beacon
=
950 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
951 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
953 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
954 "tsf %d %d rate %d\n",
955 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
956 beacon
->beacon_notify_hdr
.failure_frame
,
957 le32_to_cpu(beacon
->ibss_mgr_status
),
958 le32_to_cpu(beacon
->high_tsf
),
959 le32_to_cpu(beacon
->low_tsf
), rate
);
962 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
963 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
964 queue_work(priv
->workqueue
, &priv
->beacon_update
);
967 /* Handle notification from uCode that card's power state is changing
968 * due to software, hardware, or critical temperature RFKILL */
969 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
970 struct iwl_rx_mem_buffer
*rxb
)
972 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
973 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
974 unsigned long status
= priv
->status
;
976 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
977 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
978 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
980 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
983 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
984 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
986 if (!iwl_grab_nic_access(priv
)) {
988 priv
, HBUS_TARG_MBX_C
,
989 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
991 iwl_release_nic_access(priv
);
994 if (!(flags
& RXON_CARD_DISABLED
)) {
995 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
996 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
997 if (!iwl_grab_nic_access(priv
)) {
999 priv
, HBUS_TARG_MBX_C
,
1000 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
1002 iwl_release_nic_access(priv
);
1006 if (flags
& RF_CARD_DISABLED
) {
1007 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
1008 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
1009 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
1010 if (!iwl_grab_nic_access(priv
))
1011 iwl_release_nic_access(priv
);
1015 if (flags
& HW_CARD_DISABLED
)
1016 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1018 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1021 if (flags
& SW_CARD_DISABLED
)
1022 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1024 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1026 if (!(flags
& RXON_CARD_DISABLED
))
1027 iwl_scan_cancel(priv
);
1029 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
1030 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
1031 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
1032 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
1033 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1035 wake_up_interruptible(&priv
->wait_command_queue
);
1038 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
1041 unsigned long flags
;
1043 spin_lock_irqsave(&priv
->lock
, flags
);
1044 ret
= iwl_grab_nic_access(priv
);
1048 if (src
== IWL_PWR_SRC_VAUX
) {
1050 ret
= pci_read_config_dword(priv
->pci_dev
, PCI_CFG_POWER_SOURCE
,
1053 if (val
& PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT
)
1054 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
1055 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
1056 ~APMG_PS_CTRL_MSK_PWR_SRC
);
1058 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
1059 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
1060 ~APMG_PS_CTRL_MSK_PWR_SRC
);
1063 iwl_release_nic_access(priv
);
1065 spin_unlock_irqrestore(&priv
->lock
, flags
);
1070 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1072 * Setup the RX handlers for each of the reply types sent from the uCode
1075 * This function chains into the hardware specific files for them to setup
1076 * any hardware specific handlers as well.
1078 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
1080 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
1081 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
1082 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
1083 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
1084 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
1085 iwl_rx_pm_debug_statistics_notif
;
1086 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
1089 * The same handler is used for both the REPLY to a discrete
1090 * statistics request from the host as well as for the periodic
1091 * statistics notifications (after received beacons) from the uCode.
1093 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
1094 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
1096 iwl_setup_spectrum_handlers(priv
);
1097 iwl_setup_rx_scan_handlers(priv
);
1099 /* status change handler */
1100 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
1102 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
1103 iwl_rx_missed_beacon_notif
;
1105 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
1106 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
1108 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
1109 /* Set up hardware specific Rx handlers */
1110 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
1114 * iwl_rx_handle - Main entry function for receiving responses from uCode
1116 * Uses the priv->rx_handlers callback function array to invoke
1117 * the appropriate handlers, including command responses,
1118 * frame-received notifications, and other notifications.
1120 void iwl_rx_handle(struct iwl_priv
*priv
)
1122 struct iwl_rx_mem_buffer
*rxb
;
1123 struct iwl_rx_packet
*pkt
;
1124 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1127 unsigned long flags
;
1131 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1132 * buffer that the driver may process (last buffer filled by ucode). */
1133 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1136 /* Rx interrupt, but nothing sent from uCode */
1138 IWL_DEBUG(IWL_DL_RX
, "r = %d, i = %d\n", r
, i
);
1140 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
1144 rxb
= rxq
->queue
[i
];
1146 /* If an RXB doesn't have a Rx queue slot associated with it,
1147 * then a bug has been introduced in the queue refilling
1148 * routines -- catch it here */
1149 BUG_ON(rxb
== NULL
);
1151 rxq
->queue
[i
] = NULL
;
1153 dma_sync_single_range_for_cpu(
1154 &priv
->pci_dev
->dev
, rxb
->real_dma_addr
,
1155 rxb
->aligned_dma_addr
- rxb
->real_dma_addr
,
1156 priv
->hw_params
.rx_buf_size
,
1157 PCI_DMA_FROMDEVICE
);
1158 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1160 /* Reclaim a command buffer only if this packet is a response
1161 * to a (driver-originated) command.
1162 * If the packet (e.g. Rx frame) originated from uCode,
1163 * there is no command buffer to reclaim.
1164 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1165 * but apparently a few don't get set; catch them here. */
1166 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1167 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
1168 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
1169 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
1170 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
1171 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1172 (pkt
->hdr
.cmd
!= REPLY_TX
);
1174 /* Based on type of command response or notification,
1175 * handle those that need handling via function in
1176 * rx_handlers table. See iwl_setup_rx_handlers() */
1177 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1178 IWL_DEBUG(IWL_DL_RX
, "r = %d, i = %d, %s, 0x%02x\n", r
,
1179 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1180 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1182 /* No handling needed */
1183 IWL_DEBUG(IWL_DL_RX
,
1184 "r %d i %d No handler needed for %s, 0x%02x\n",
1185 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1190 /* Invoke any callbacks, transfer the skb to caller, and
1191 * fire off the (possibly) blocking iwl_send_cmd()
1192 * as we reclaim the driver command queue */
1193 if (rxb
&& rxb
->skb
)
1194 iwl_tx_cmd_complete(priv
, rxb
);
1196 IWL_WARNING("Claim null rxb?\n");
1199 /* For now we just don't re-use anything. We can tweak this
1200 * later to try and re-use notification packets and SKBs that
1201 * fail to Rx correctly */
1202 if (rxb
->skb
!= NULL
) {
1203 priv
->alloc_rxb_skb
--;
1204 dev_kfree_skb_any(rxb
->skb
);
1208 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1209 priv
->hw_params
.rx_buf_size
+ 256,
1210 PCI_DMA_FROMDEVICE
);
1211 spin_lock_irqsave(&rxq
->lock
, flags
);
1212 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1213 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1214 i
= (i
+ 1) & RX_QUEUE_MASK
;
1215 /* If there are a lot of unused frames,
1216 * restock the Rx queue so ucode wont assert. */
1221 iwl_rx_queue_restock(priv
);
1227 /* Backtrack one entry */
1229 iwl_rx_queue_restock(priv
);
1232 #ifdef CONFIG_IWLWIFI_DEBUG
1233 static void iwl_print_rx_config_cmd(struct iwl_priv
*priv
)
1235 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
1237 IWL_DEBUG_RADIO("RX CONFIG:\n");
1238 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
1239 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
1240 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
1241 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1242 le32_to_cpu(rxon
->filter_flags
));
1243 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
1244 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1245 rxon
->ofdm_basic_rates
);
1246 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
1247 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon
->node_addr
);
1248 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon
->bssid_addr
);
1249 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
1253 /* call this function to flush any scheduled tasklet */
1254 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1256 /* wait to make sure we flush pending tasklet*/
1257 synchronize_irq(priv
->pci_dev
->irq
);
1258 tasklet_kill(&priv
->irq_tasklet
);
1262 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1264 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
1266 /* Set the FW error flag -- cleared on iwl_down */
1267 set_bit(STATUS_FW_ERROR
, &priv
->status
);
1269 /* Cancel currently queued command. */
1270 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
1272 #ifdef CONFIG_IWLWIFI_DEBUG
1273 if (priv
->debug_level
& IWL_DL_FW_ERRORS
) {
1274 iwl_dump_nic_error_log(priv
);
1275 iwl_dump_nic_event_log(priv
);
1276 iwl_print_rx_config_cmd(priv
);
1280 wake_up_interruptible(&priv
->wait_command_queue
);
1282 /* Keep the restart process from trying to send host
1283 * commands by clearing the INIT status bit */
1284 clear_bit(STATUS_READY
, &priv
->status
);
1286 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1287 IWL_DEBUG(IWL_DL_FW_ERRORS
,
1288 "Restarting adapter due to uCode error.\n");
1290 if (iwl_is_associated(priv
)) {
1291 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
1292 sizeof(priv
->recovery_rxon
));
1293 priv
->error_recovering
= 1;
1295 if (priv
->cfg
->mod_params
->restart_fw
)
1296 queue_work(priv
->workqueue
, &priv
->restart
);
1300 static void iwl_error_recovery(struct iwl_priv
*priv
)
1302 unsigned long flags
;
1304 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
1305 sizeof(priv
->staging_rxon
));
1306 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1307 iwl_commit_rxon(priv
);
1309 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
1311 spin_lock_irqsave(&priv
->lock
, flags
);
1312 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
1313 priv
->error_recovering
= 0;
1314 spin_unlock_irqrestore(&priv
->lock
, flags
);
1317 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1319 u32 inta
, handled
= 0;
1321 unsigned long flags
;
1322 #ifdef CONFIG_IWLWIFI_DEBUG
1326 spin_lock_irqsave(&priv
->lock
, flags
);
1328 /* Ack/clear/reset pending uCode interrupts.
1329 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1330 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1331 inta
= iwl_read32(priv
, CSR_INT
);
1332 iwl_write32(priv
, CSR_INT
, inta
);
1334 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1335 * Any new interrupts that happen after this, either while we're
1336 * in this tasklet, or later, will show up in next ISR/tasklet. */
1337 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1338 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1340 #ifdef CONFIG_IWLWIFI_DEBUG
1341 if (priv
->debug_level
& IWL_DL_ISR
) {
1342 /* just for debug */
1343 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1344 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1345 inta
, inta_mask
, inta_fh
);
1349 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1350 * atomic, make sure that inta covers all the interrupts that
1351 * we've discovered, even if FH interrupt came in just after
1352 * reading CSR_INT. */
1353 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1354 inta
|= CSR_INT_BIT_FH_RX
;
1355 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1356 inta
|= CSR_INT_BIT_FH_TX
;
1358 /* Now service all interrupt bits discovered above. */
1359 if (inta
& CSR_INT_BIT_HW_ERR
) {
1360 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1362 /* Tell the device to stop sending interrupts */
1363 iwl_disable_interrupts(priv
);
1365 iwl_irq_handle_error(priv
);
1367 handled
|= CSR_INT_BIT_HW_ERR
;
1369 spin_unlock_irqrestore(&priv
->lock
, flags
);
1374 #ifdef CONFIG_IWLWIFI_DEBUG
1375 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1376 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1377 if (inta
& CSR_INT_BIT_SCD
)
1378 IWL_DEBUG_ISR("Scheduler finished to transmit "
1379 "the frame/frames.\n");
1381 /* Alive notification via Rx interrupt will do the real work */
1382 if (inta
& CSR_INT_BIT_ALIVE
)
1383 IWL_DEBUG_ISR("Alive interrupt\n");
1386 /* Safely ignore these bits for debug checks below */
1387 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1389 /* HW RF KILL switch toggled */
1390 if (inta
& CSR_INT_BIT_RF_KILL
) {
1392 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1393 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1396 IWL_DEBUG(IWL_DL_RF_KILL
, "RF_KILL bit toggled to %s.\n",
1397 hw_rf_kill
? "disable radio" : "enable radio");
1399 /* driver only loads ucode once setting the interface up.
1400 * the driver as well won't allow loading if RFKILL is set
1401 * therefore no need to restart the driver from this handler
1403 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
)) {
1404 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1405 if (priv
->is_open
&& !iwl_is_rfkill(priv
))
1406 queue_work(priv
->workqueue
, &priv
->up
);
1409 handled
|= CSR_INT_BIT_RF_KILL
;
1412 /* Chip got too hot and stopped itself */
1413 if (inta
& CSR_INT_BIT_CT_KILL
) {
1414 IWL_ERROR("Microcode CT kill error detected.\n");
1415 handled
|= CSR_INT_BIT_CT_KILL
;
1418 /* Error detected by uCode */
1419 if (inta
& CSR_INT_BIT_SW_ERR
) {
1420 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1422 iwl_irq_handle_error(priv
);
1423 handled
|= CSR_INT_BIT_SW_ERR
;
1426 /* uCode wakes up after power-down sleep */
1427 if (inta
& CSR_INT_BIT_WAKEUP
) {
1428 IWL_DEBUG_ISR("Wakeup interrupt\n");
1429 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1430 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1431 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1432 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1433 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1434 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1435 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1437 handled
|= CSR_INT_BIT_WAKEUP
;
1440 /* All uCode command responses, including Tx command responses,
1441 * Rx "responses" (frame-received notification), and other
1442 * notifications from uCode come through here*/
1443 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1444 iwl_rx_handle(priv
);
1445 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1448 if (inta
& CSR_INT_BIT_FH_TX
) {
1449 IWL_DEBUG_ISR("Tx interrupt\n");
1450 handled
|= CSR_INT_BIT_FH_TX
;
1451 /* FH finished to write, send event */
1452 priv
->ucode_write_complete
= 1;
1453 wake_up_interruptible(&priv
->wait_command_queue
);
1456 if (inta
& ~handled
)
1457 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1459 if (inta
& ~CSR_INI_SET_MASK
) {
1460 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1461 inta
& ~CSR_INI_SET_MASK
);
1462 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
1465 /* Re-enable all interrupts */
1466 /* only Re-enable if diabled by irq */
1467 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1468 iwl_enable_interrupts(priv
);
1470 #ifdef CONFIG_IWLWIFI_DEBUG
1471 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1472 inta
= iwl_read32(priv
, CSR_INT
);
1473 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1474 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1475 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1476 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1479 spin_unlock_irqrestore(&priv
->lock
, flags
);
1482 static irqreturn_t
iwl_isr(int irq
, void *data
)
1484 struct iwl_priv
*priv
= data
;
1485 u32 inta
, inta_mask
;
1490 spin_lock(&priv
->lock
);
1492 /* Disable (but don't clear!) interrupts here to avoid
1493 * back-to-back ISRs and sporadic interrupts from our NIC.
1494 * If we have something to service, the tasklet will re-enable ints.
1495 * If we *don't* have something, we'll re-enable before leaving here. */
1496 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
1497 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
1499 /* Discover which interrupts are active/pending */
1500 inta
= iwl_read32(priv
, CSR_INT
);
1501 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1503 /* Ignore interrupt if there's nothing in NIC to service.
1504 * This may be due to IRQ shared with another device,
1505 * or due to sporadic interrupts thrown from our NIC. */
1506 if (!inta
&& !inta_fh
) {
1507 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1511 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
1512 /* Hardware disappeared. It might have already raised
1514 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta
);
1518 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1519 inta
, inta_mask
, inta_fh
);
1521 inta
&= ~CSR_INT_BIT_SCD
;
1523 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1524 if (likely(inta
|| inta_fh
))
1525 tasklet_schedule(&priv
->irq_tasklet
);
1528 spin_unlock(&priv
->lock
);
1532 /* re-enable interrupts here since we don't have anything to service. */
1533 /* only Re-enable if diabled by irq */
1534 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1535 iwl_enable_interrupts(priv
);
1536 spin_unlock(&priv
->lock
);
1540 /******************************************************************************
1542 * uCode download functions
1544 ******************************************************************************/
1546 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1548 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1549 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1550 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1551 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1552 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1553 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1556 static void iwl_nic_start(struct iwl_priv
*priv
)
1558 /* Remove all resets to allow NIC to operate */
1559 iwl_write32(priv
, CSR_RESET
, 0);
1564 * iwl_read_ucode - Read uCode images from disk file.
1566 * Copy into buffers for card to fetch via bus-mastering
1568 static int iwl_read_ucode(struct iwl_priv
*priv
)
1570 struct iwl_ucode
*ucode
;
1571 int ret
= -EINVAL
, index
;
1572 const struct firmware
*ucode_raw
;
1573 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1574 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1575 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1579 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1581 /* Ask kernel firmware_class module to get the boot firmware off disk.
1582 * request_firmware() is synchronous, file is in memory on return. */
1583 for (index
= api_max
; index
>= api_min
; index
--) {
1584 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1585 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1587 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1594 if (index
< api_max
)
1595 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1597 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1598 buf
, ucode_raw
->size
);
1606 /* Make sure that we got at least our header! */
1607 if (ucode_raw
->size
< sizeof(*ucode
)) {
1608 IWL_ERROR("File size way too small!\n");
1613 /* Data from ucode file: header followed by uCode images */
1614 ucode
= (void *)ucode_raw
->data
;
1616 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1617 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1618 inst_size
= le32_to_cpu(ucode
->inst_size
);
1619 data_size
= le32_to_cpu(ucode
->data_size
);
1620 init_size
= le32_to_cpu(ucode
->init_size
);
1621 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1622 boot_size
= le32_to_cpu(ucode
->boot_size
);
1624 /* api_ver should match the api version forming part of the
1625 * firmware filename ... but we don't check for that and only rely
1626 * on the API version read from firware header from here on forward */
1628 if (api_ver
< api_min
|| api_ver
> api_max
) {
1629 IWL_ERROR("Driver unable to support your firmware API. "
1630 "Driver supports v%u, firmware is v%u.\n",
1632 priv
->ucode_ver
= 0;
1636 if (api_ver
!= api_max
)
1637 IWL_ERROR("Firmware has old API version. Expected v%u, "
1638 "got v%u. New firmware can be obtained "
1639 "from http://www.intellinuxwireless.org.\n",
1642 printk(KERN_INFO DRV_NAME
" loaded firmware version %u.%u.%u.%u\n",
1643 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1644 IWL_UCODE_MINOR(priv
->ucode_ver
),
1645 IWL_UCODE_API(priv
->ucode_ver
),
1646 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1648 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1650 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1652 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1654 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1656 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1658 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1661 /* Verify size of file vs. image size info in file's header */
1662 if (ucode_raw
->size
< sizeof(*ucode
) +
1663 inst_size
+ data_size
+ init_size
+
1664 init_data_size
+ boot_size
) {
1666 IWL_DEBUG_INFO("uCode file size %d too small\n",
1667 (int)ucode_raw
->size
);
1672 /* Verify that uCode images will fit in card's SRAM */
1673 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1674 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1680 if (data_size
> priv
->hw_params
.max_data_size
) {
1681 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1686 if (init_size
> priv
->hw_params
.max_inst_size
) {
1688 ("uCode init instr len %d too large to fit in\n",
1693 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1695 ("uCode init data len %d too large to fit in\n",
1700 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1702 ("uCode boot instr len %d too large to fit in\n",
1708 /* Allocate ucode buffers for card's bus-master loading ... */
1710 /* Runtime instructions and 2 copies of data:
1711 * 1) unmodified from disk
1712 * 2) backup cache for save/restore during power-downs */
1713 priv
->ucode_code
.len
= inst_size
;
1714 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1716 priv
->ucode_data
.len
= data_size
;
1717 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1719 priv
->ucode_data_backup
.len
= data_size
;
1720 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1722 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1723 !priv
->ucode_data_backup
.v_addr
)
1726 /* Initialization instructions and data */
1727 if (init_size
&& init_data_size
) {
1728 priv
->ucode_init
.len
= init_size
;
1729 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1731 priv
->ucode_init_data
.len
= init_data_size
;
1732 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1734 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1738 /* Bootstrap (instructions only, no data) */
1740 priv
->ucode_boot
.len
= boot_size
;
1741 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1743 if (!priv
->ucode_boot
.v_addr
)
1747 /* Copy images into buffers for card's bus-master reads ... */
1749 /* Runtime instructions (first block of data in file) */
1750 src
= &ucode
->data
[0];
1751 len
= priv
->ucode_code
.len
;
1752 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len
);
1753 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1754 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1755 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1757 /* Runtime data (2nd block)
1758 * NOTE: Copy into backup buffer will be done in iwl_up() */
1759 src
= &ucode
->data
[inst_size
];
1760 len
= priv
->ucode_data
.len
;
1761 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len
);
1762 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1763 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1765 /* Initialization instructions (3rd block) */
1767 src
= &ucode
->data
[inst_size
+ data_size
];
1768 len
= priv
->ucode_init
.len
;
1769 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1771 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1774 /* Initialization data (4th block) */
1775 if (init_data_size
) {
1776 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1777 len
= priv
->ucode_init_data
.len
;
1778 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1780 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1783 /* Bootstrap instructions (5th block) */
1784 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1785 len
= priv
->ucode_boot
.len
;
1786 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len
);
1787 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1789 /* We have our copies now, allow OS release its copies */
1790 release_firmware(ucode_raw
);
1794 IWL_ERROR("failed to allocate pci memory\n");
1796 iwl_dealloc_ucode_pci(priv
);
1799 release_firmware(ucode_raw
);
1806 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
,
1807 struct sk_buff
*skb
);
1810 * iwl_alive_start - called after REPLY_ALIVE notification received
1811 * from protocol/runtime uCode (initialization uCode's
1812 * Alive gets handled by iwl_init_alive_start()).
1814 static void iwl_alive_start(struct iwl_priv
*priv
)
1818 IWL_DEBUG_INFO("Runtime Alive received.\n");
1820 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1821 /* We had an error bringing up the hardware, so take it
1822 * all the way back down so we can try again */
1823 IWL_DEBUG_INFO("Alive failed.\n");
1827 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1828 * This is a paranoid check, because we would not have gotten the
1829 * "runtime" alive if code weren't properly loaded. */
1830 if (iwl_verify_ucode(priv
)) {
1831 /* Runtime instruction load was bad;
1832 * take it all the way back down so we can try again */
1833 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1837 iwl_clear_stations_table(priv
);
1838 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1840 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1845 /* After the ALIVE response, we can send host commands to the uCode */
1846 set_bit(STATUS_ALIVE
, &priv
->status
);
1848 if (iwl_is_rfkill(priv
))
1851 ieee80211_wake_queues(priv
->hw
);
1853 priv
->active_rate
= priv
->rates_mask
;
1854 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1856 if (iwl_is_associated(priv
)) {
1857 struct iwl_rxon_cmd
*active_rxon
=
1858 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1860 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
1861 sizeof(priv
->staging_rxon
));
1862 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1864 /* Initialize our rx_config data */
1865 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1866 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1869 /* Configure Bluetooth device coexistence support */
1870 iwl_send_bt_config(priv
);
1872 iwl_reset_run_time_calib(priv
);
1874 /* Configure the adapter for unassociated operation */
1875 iwl_commit_rxon(priv
);
1877 /* At this point, the NIC is initialized and operational */
1878 iwl_rf_kill_ct_config(priv
);
1880 iwl_leds_register(priv
);
1882 IWL_DEBUG_INFO("ALIVE processing complete.\n");
1883 set_bit(STATUS_READY
, &priv
->status
);
1884 wake_up_interruptible(&priv
->wait_command_queue
);
1886 if (priv
->error_recovering
)
1887 iwl_error_recovery(priv
);
1889 iwl_power_update_mode(priv
, 1);
1891 /* reassociate for ADHOC mode */
1892 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1893 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1896 iwl_mac_beacon_update(priv
->hw
, beacon
);
1900 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1901 iwl_set_mode(priv
, priv
->iw_mode
);
1906 queue_work(priv
->workqueue
, &priv
->restart
);
1909 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1911 static void __iwl_down(struct iwl_priv
*priv
)
1913 unsigned long flags
;
1914 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1916 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
1919 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1921 iwl_leds_unregister(priv
);
1923 iwl_clear_stations_table(priv
);
1925 /* Unblock any waiting calls */
1926 wake_up_interruptible_all(&priv
->wait_command_queue
);
1928 /* Wipe out the EXIT_PENDING status bit if we are not actually
1929 * exiting the module */
1931 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1933 /* stop and reset the on-board processor */
1934 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1936 /* tell the device to stop sending interrupts */
1937 spin_lock_irqsave(&priv
->lock
, flags
);
1938 iwl_disable_interrupts(priv
);
1939 spin_unlock_irqrestore(&priv
->lock
, flags
);
1940 iwl_synchronize_irq(priv
);
1942 if (priv
->mac80211_registered
)
1943 ieee80211_stop_queues(priv
->hw
);
1945 /* If we have not previously called iwl_init() then
1946 * clear all bits but the RF Kill and SUSPEND bits and return */
1947 if (!iwl_is_init(priv
)) {
1948 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1950 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1952 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1953 STATUS_GEO_CONFIGURED
|
1954 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1956 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1957 STATUS_EXIT_PENDING
;
1961 /* ...otherwise clear out all the status bits but the RF Kill and
1962 * SUSPEND bits and continue taking the NIC down. */
1963 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1965 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1967 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1968 STATUS_GEO_CONFIGURED
|
1969 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1971 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1973 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1974 STATUS_EXIT_PENDING
;
1976 spin_lock_irqsave(&priv
->lock
, flags
);
1977 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1978 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1979 spin_unlock_irqrestore(&priv
->lock
, flags
);
1981 iwl_txq_ctx_stop(priv
);
1984 spin_lock_irqsave(&priv
->lock
, flags
);
1985 if (!iwl_grab_nic_access(priv
)) {
1986 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1987 APMG_CLK_VAL_DMA_CLK_RQT
);
1988 iwl_release_nic_access(priv
);
1990 spin_unlock_irqrestore(&priv
->lock
, flags
);
1994 /* FIXME: apm_ops.suspend(priv) */
1995 if (exit_pending
|| test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
1996 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1998 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2000 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2002 if (priv
->ibss_beacon
)
2003 dev_kfree_skb(priv
->ibss_beacon
);
2004 priv
->ibss_beacon
= NULL
;
2006 /* clear out any free frames */
2007 iwl_clear_free_frames(priv
);
2010 static void iwl_down(struct iwl_priv
*priv
)
2012 mutex_lock(&priv
->mutex
);
2014 mutex_unlock(&priv
->mutex
);
2016 iwl_cancel_deferred_work(priv
);
2019 #define MAX_HW_RESTARTS 5
2021 static int __iwl_up(struct iwl_priv
*priv
)
2026 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2027 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2031 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2032 IWL_ERROR("ucode not available for device bringup\n");
2036 /* If platform's RF_KILL switch is NOT set to KILL */
2037 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2038 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2040 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2042 if (iwl_is_rfkill(priv
)) {
2043 iwl_enable_interrupts(priv
);
2044 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2045 test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? "HW" : "SW");
2049 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2051 ret
= iwl_hw_nic_init(priv
);
2053 IWL_ERROR("Unable to init nic\n");
2057 /* make sure rfkill handshake bits are cleared */
2058 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2059 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2060 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2062 /* clear (again), then enable host interrupts */
2063 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2064 iwl_enable_interrupts(priv
);
2066 /* really make sure rfkill handshake bits are cleared */
2067 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2068 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2070 /* Copy original ucode data image from disk into backup cache.
2071 * This will be used to initialize the on-board processor's
2072 * data SRAM for a clean start when the runtime program first loads. */
2073 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2074 priv
->ucode_data
.len
);
2076 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2078 iwl_clear_stations_table(priv
);
2080 /* load bootstrap state machine,
2081 * load bootstrap program into processor's memory,
2082 * prepare to load the "initialize" uCode */
2083 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
2086 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret
);
2090 /* Clear out the uCode error bit if it is set */
2091 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
2093 /* start card; "initialize" will load runtime ucode */
2094 iwl_nic_start(priv
);
2096 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
2101 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2103 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2105 /* tried to restart and config the device for as long as our
2106 * patience could withstand */
2107 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
2112 /*****************************************************************************
2114 * Workqueue callbacks
2116 *****************************************************************************/
2118 static void iwl_bg_init_alive_start(struct work_struct
*data
)
2120 struct iwl_priv
*priv
=
2121 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2123 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2126 mutex_lock(&priv
->mutex
);
2127 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
2128 mutex_unlock(&priv
->mutex
);
2131 static void iwl_bg_alive_start(struct work_struct
*data
)
2133 struct iwl_priv
*priv
=
2134 container_of(data
, struct iwl_priv
, alive_start
.work
);
2136 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2139 mutex_lock(&priv
->mutex
);
2140 iwl_alive_start(priv
);
2141 mutex_unlock(&priv
->mutex
);
2144 static void iwl_bg_rf_kill(struct work_struct
*work
)
2146 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
2148 wake_up_interruptible(&priv
->wait_command_queue
);
2150 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2153 mutex_lock(&priv
->mutex
);
2155 if (!iwl_is_rfkill(priv
)) {
2156 IWL_DEBUG(IWL_DL_RF_KILL
,
2157 "HW and/or SW RF Kill no longer active, restarting "
2159 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2160 queue_work(priv
->workqueue
, &priv
->restart
);
2162 /* make sure mac80211 stop sending Tx frame */
2163 if (priv
->mac80211_registered
)
2164 ieee80211_stop_queues(priv
->hw
);
2166 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2167 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2168 "disabled by SW switch\n");
2170 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2171 "Kill switch must be turned off for "
2172 "wireless networking to work.\n");
2174 mutex_unlock(&priv
->mutex
);
2175 iwl_rfkill_set_hw_state(priv
);
2178 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
2180 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
2181 run_time_calib_work
);
2183 mutex_lock(&priv
->mutex
);
2185 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
2186 test_bit(STATUS_SCANNING
, &priv
->status
)) {
2187 mutex_unlock(&priv
->mutex
);
2191 if (priv
->start_calib
) {
2192 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
2194 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
2197 mutex_unlock(&priv
->mutex
);
2201 static void iwl_bg_up(struct work_struct
*data
)
2203 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
2205 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2208 mutex_lock(&priv
->mutex
);
2210 mutex_unlock(&priv
->mutex
);
2211 iwl_rfkill_set_hw_state(priv
);
2214 static void iwl_bg_restart(struct work_struct
*data
)
2216 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
2218 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2222 queue_work(priv
->workqueue
, &priv
->up
);
2225 static void iwl_bg_rx_replenish(struct work_struct
*data
)
2227 struct iwl_priv
*priv
=
2228 container_of(data
, struct iwl_priv
, rx_replenish
);
2230 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2233 mutex_lock(&priv
->mutex
);
2234 iwl_rx_replenish(priv
);
2235 mutex_unlock(&priv
->mutex
);
2238 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2240 static void iwl_post_associate(struct iwl_priv
*priv
)
2242 struct ieee80211_conf
*conf
= NULL
;
2244 unsigned long flags
;
2246 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2247 IWL_ERROR("%s Should not be called in AP mode\n", __func__
);
2251 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2252 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
2255 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2259 if (!priv
->vif
|| !priv
->is_open
)
2262 iwl_power_cancel_timeout(priv
);
2263 iwl_scan_cancel_timeout(priv
, 200);
2265 conf
= ieee80211_get_hw_conf(priv
->hw
);
2267 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2268 iwl_commit_rxon(priv
);
2270 iwl_setup_rxon_timing(priv
);
2271 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2272 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2274 IWL_WARNING("REPLY_RXON_TIMING failed - "
2275 "Attempting to continue.\n");
2277 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2279 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
2281 iwl_set_rxon_chain(priv
);
2282 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2284 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2285 priv
->assoc_id
, priv
->beacon_int
);
2287 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2288 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2290 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2292 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2293 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2294 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2296 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2298 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2299 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2303 iwl_commit_rxon(priv
);
2305 switch (priv
->iw_mode
) {
2306 case NL80211_IFTYPE_STATION
:
2309 case NL80211_IFTYPE_ADHOC
:
2311 /* assume default assoc id */
2314 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
2315 iwl_send_beacon_cmd(priv
);
2320 IWL_ERROR("%s Should not be called in %d mode\n",
2321 __func__
, priv
->iw_mode
);
2325 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2326 priv
->assoc_station_added
= 1;
2328 spin_lock_irqsave(&priv
->lock
, flags
);
2329 iwl_activate_qos(priv
, 0);
2330 spin_unlock_irqrestore(&priv
->lock
, flags
);
2332 /* the chain noise calibration will enabled PM upon completion
2333 * If chain noise has already been run, then we need to enable
2334 * power management here */
2335 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2336 iwl_power_enable_management(priv
);
2338 /* Enable Rx differential gain and sensitivity calibrations */
2339 iwl_chain_noise_reset(priv
);
2340 priv
->start_calib
= 1;
2344 /*****************************************************************************
2346 * mac80211 entry point functions
2348 *****************************************************************************/
2350 #define UCODE_READY_TIMEOUT (4 * HZ)
2352 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2354 struct iwl_priv
*priv
= hw
->priv
;
2358 IWL_DEBUG_MAC80211("enter\n");
2360 if (pci_enable_device(priv
->pci_dev
)) {
2361 IWL_ERROR("Fail to pci_enable_device\n");
2364 pci_restore_state(priv
->pci_dev
);
2365 pci_enable_msi(priv
->pci_dev
);
2367 /* enable interrupts if needed: hw bug w/a */
2368 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
2369 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
2370 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
2371 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
2374 ret
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
2377 IWL_ERROR("Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
2378 goto out_disable_msi
;
2381 /* we should be verifying the device is ready to be opened */
2382 mutex_lock(&priv
->mutex
);
2384 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
2385 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2386 * ucode filename and max sizes are card-specific. */
2388 if (!priv
->ucode_code
.len
) {
2389 ret
= iwl_read_ucode(priv
);
2391 IWL_ERROR("Could not read microcode: %d\n", ret
);
2392 mutex_unlock(&priv
->mutex
);
2393 goto out_release_irq
;
2397 ret
= __iwl_up(priv
);
2399 mutex_unlock(&priv
->mutex
);
2401 iwl_rfkill_set_hw_state(priv
);
2404 goto out_release_irq
;
2406 if (iwl_is_rfkill(priv
))
2409 IWL_DEBUG_INFO("Start UP work done.\n");
2411 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
2414 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2415 * mac80211 will not be run successfully. */
2416 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2417 test_bit(STATUS_READY
, &priv
->status
),
2418 UCODE_READY_TIMEOUT
);
2420 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2421 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2422 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2424 goto out_release_irq
;
2430 IWL_DEBUG_MAC80211("leave\n");
2434 free_irq(priv
->pci_dev
->irq
, priv
);
2436 pci_disable_msi(priv
->pci_dev
);
2437 pci_disable_device(priv
->pci_dev
);
2439 IWL_DEBUG_MAC80211("leave - failed\n");
2443 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2445 struct iwl_priv
*priv
= hw
->priv
;
2447 IWL_DEBUG_MAC80211("enter\n");
2449 if (!priv
->is_open
) {
2450 IWL_DEBUG_MAC80211("leave - skip\n");
2456 if (iwl_is_ready_rf(priv
)) {
2457 /* stop mac, cancel any scan request and clear
2458 * RXON_FILTER_ASSOC_MSK BIT
2460 mutex_lock(&priv
->mutex
);
2461 iwl_scan_cancel_timeout(priv
, 100);
2462 mutex_unlock(&priv
->mutex
);
2467 flush_workqueue(priv
->workqueue
);
2468 free_irq(priv
->pci_dev
->irq
, priv
);
2469 pci_disable_msi(priv
->pci_dev
);
2470 pci_save_state(priv
->pci_dev
);
2471 pci_disable_device(priv
->pci_dev
);
2473 IWL_DEBUG_MAC80211("leave\n");
2476 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2478 struct iwl_priv
*priv
= hw
->priv
;
2480 IWL_DEBUG_MACDUMP("enter\n");
2482 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2483 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2485 if (iwl_tx_skb(priv
, skb
))
2486 dev_kfree_skb_any(skb
);
2488 IWL_DEBUG_MACDUMP("leave\n");
2489 return NETDEV_TX_OK
;
2492 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
2493 struct ieee80211_if_init_conf
*conf
)
2495 struct iwl_priv
*priv
= hw
->priv
;
2496 unsigned long flags
;
2498 IWL_DEBUG_MAC80211("enter: type %d\n", conf
->type
);
2501 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2505 spin_lock_irqsave(&priv
->lock
, flags
);
2506 priv
->vif
= conf
->vif
;
2507 priv
->iw_mode
= conf
->type
;
2509 spin_unlock_irqrestore(&priv
->lock
, flags
);
2511 mutex_lock(&priv
->mutex
);
2513 if (conf
->mac_addr
) {
2514 IWL_DEBUG_MAC80211("Set %pM\n", conf
->mac_addr
);
2515 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2518 if (iwl_set_mode(priv
, conf
->type
) == -EAGAIN
)
2519 /* we are not ready, will run again when ready */
2520 set_bit(STATUS_MODE_PENDING
, &priv
->status
);
2522 mutex_unlock(&priv
->mutex
);
2524 IWL_DEBUG_MAC80211("leave\n");
2529 * iwl_mac_config - mac80211 config callback
2531 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2532 * be set inappropriately and the driver currently sets the hardware up to
2533 * use it whenever needed.
2535 static int iwl_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2537 struct iwl_priv
*priv
= hw
->priv
;
2538 const struct iwl_channel_info
*ch_info
;
2539 struct ieee80211_conf
*conf
= &hw
->conf
;
2540 unsigned long flags
;
2544 mutex_lock(&priv
->mutex
);
2545 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
->hw_value
);
2547 priv
->current_ht_config
.is_ht
= conf
->ht
.enabled
;
2549 if (conf
->radio_enabled
&& iwl_radio_kill_sw_enable_radio(priv
)) {
2550 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2554 if (!conf
->radio_enabled
)
2555 iwl_radio_kill_sw_disable_radio(priv
);
2557 if (!iwl_is_ready(priv
)) {
2558 IWL_DEBUG_MAC80211("leave - not ready\n");
2563 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2564 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2565 IWL_DEBUG_MAC80211("leave - scanning\n");
2566 mutex_unlock(&priv
->mutex
);
2570 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
2571 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
, channel
);
2572 if (!is_channel_valid(ch_info
)) {
2573 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2578 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2579 !is_channel_ibss(ch_info
)) {
2580 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2581 conf
->channel
->hw_value
, conf
->channel
->band
);
2586 spin_lock_irqsave(&priv
->lock
, flags
);
2589 /* if we are switching from ht to 2.4 clear flags
2590 * from any ht related info since 2.4 does not
2592 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
)
2593 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2594 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
2597 priv
->staging_rxon
.flags
= 0;
2599 iwl_set_rxon_channel(priv
, conf
->channel
);
2601 iwl_set_flags_for_band(priv
, conf
->channel
->band
);
2603 /* The list of supported rates and rate mask can be different
2604 * for each band; since the band may have changed, reset
2605 * the rate mask to what mac80211 lists */
2608 spin_unlock_irqrestore(&priv
->lock
, flags
);
2610 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2611 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
2612 iwl_hw_channel_switch(priv
, conf
->channel
);
2617 if (!conf
->radio_enabled
) {
2618 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2622 if (iwl_is_rfkill(priv
)) {
2623 IWL_DEBUG_MAC80211("leave - RF kill\n");
2628 if (conf
->flags
& IEEE80211_CONF_PS
)
2629 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_INDEX_3
);
2631 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_MODE_CAM
);
2633 IWL_DEBUG_MAC80211("Error setting power level\n");
2635 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2636 priv
->tx_power_user_lmt
, conf
->power_level
);
2638 iwl_set_tx_power(priv
, conf
->power_level
, false);
2642 if (memcmp(&priv
->active_rxon
,
2643 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
2644 iwl_commit_rxon(priv
);
2646 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2648 IWL_DEBUG_MAC80211("leave\n");
2651 mutex_unlock(&priv
->mutex
);
2655 static void iwl_config_ap(struct iwl_priv
*priv
)
2658 unsigned long flags
;
2660 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2663 /* The following should be done only at AP bring up */
2664 if (!iwl_is_associated(priv
)) {
2666 /* RXON - unassoc (to set timing command) */
2667 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2668 iwl_commit_rxon(priv
);
2671 iwl_setup_rxon_timing(priv
);
2672 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2673 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2675 IWL_WARNING("REPLY_RXON_TIMING failed - "
2676 "Attempting to continue.\n");
2678 iwl_set_rxon_chain(priv
);
2680 /* FIXME: what should be the assoc_id for AP? */
2681 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2682 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2683 priv
->staging_rxon
.flags
|=
2684 RXON_FLG_SHORT_PREAMBLE_MSK
;
2686 priv
->staging_rxon
.flags
&=
2687 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2689 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2690 if (priv
->assoc_capability
&
2691 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2692 priv
->staging_rxon
.flags
|=
2693 RXON_FLG_SHORT_SLOT_MSK
;
2695 priv
->staging_rxon
.flags
&=
2696 ~RXON_FLG_SHORT_SLOT_MSK
;
2698 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2699 priv
->staging_rxon
.flags
&=
2700 ~RXON_FLG_SHORT_SLOT_MSK
;
2702 /* restore RXON assoc */
2703 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2704 iwl_commit_rxon(priv
);
2705 spin_lock_irqsave(&priv
->lock
, flags
);
2706 iwl_activate_qos(priv
, 1);
2707 spin_unlock_irqrestore(&priv
->lock
, flags
);
2708 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2710 iwl_send_beacon_cmd(priv
);
2712 /* FIXME - we need to add code here to detect a totally new
2713 * configuration, reset the AP, unassoc, rxon timing, assoc,
2714 * clear sta table, add BCAST sta... */
2718 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
,
2719 struct ieee80211_vif
*vif
,
2720 struct ieee80211_if_conf
*conf
)
2722 struct iwl_priv
*priv
= hw
->priv
;
2728 if (priv
->vif
!= vif
) {
2729 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2733 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2734 conf
->changed
& IEEE80211_IFCC_BEACON
) {
2735 struct sk_buff
*beacon
= ieee80211_beacon_get(hw
, vif
);
2738 mutex_lock(&priv
->mutex
);
2739 rc
= iwl_mac_beacon_update(hw
, beacon
);
2740 mutex_unlock(&priv
->mutex
);
2745 if (!iwl_is_alive(priv
))
2748 mutex_lock(&priv
->mutex
);
2751 IWL_DEBUG_MAC80211("bssid: %pM\n", conf
->bssid
);
2754 * very dubious code was here; the probe filtering flag is never set:
2756 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2757 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2760 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2762 conf
->bssid
= priv
->mac_addr
;
2763 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
2764 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2767 if (priv
->ibss_beacon
)
2768 dev_kfree_skb(priv
->ibss_beacon
);
2770 priv
->ibss_beacon
= ieee80211_beacon_get(hw
, vif
);
2773 if (iwl_is_rfkill(priv
))
2776 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
2777 !is_multicast_ether_addr(conf
->bssid
)) {
2778 /* If there is currently a HW scan going on in the background
2779 * then we need to cancel it else the RXON below will fail. */
2780 if (iwl_scan_cancel_timeout(priv
, 100)) {
2781 IWL_WARNING("Aborted scan still in progress "
2783 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2784 mutex_unlock(&priv
->mutex
);
2787 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
2789 /* TODO: Audit driver for usage of these members and see
2790 * if mac80211 deprecates them (priv->bssid looks like it
2791 * shouldn't be there, but I haven't scanned the IBSS code
2792 * to verify) - jpk */
2793 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
2795 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2796 iwl_config_ap(priv
);
2798 rc
= iwl_commit_rxon(priv
);
2799 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && rc
)
2800 iwl_rxon_add_station(
2801 priv
, priv
->active_rxon
.bssid_addr
, 1);
2805 iwl_scan_cancel_timeout(priv
, 100);
2806 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2807 iwl_commit_rxon(priv
);
2811 IWL_DEBUG_MAC80211("leave\n");
2812 mutex_unlock(&priv
->mutex
);
2817 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
2818 unsigned int changed_flags
,
2819 unsigned int *total_flags
,
2820 int mc_count
, struct dev_addr_list
*mc_list
)
2822 struct iwl_priv
*priv
= hw
->priv
;
2823 __le32
*filter_flags
= &priv
->staging_rxon
.filter_flags
;
2825 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2826 changed_flags
, *total_flags
);
2828 if (changed_flags
& (FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
)) {
2829 if (*total_flags
& (FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
))
2830 *filter_flags
|= RXON_FILTER_PROMISC_MSK
;
2832 *filter_flags
&= ~RXON_FILTER_PROMISC_MSK
;
2834 if (changed_flags
& FIF_ALLMULTI
) {
2835 if (*total_flags
& FIF_ALLMULTI
)
2836 *filter_flags
|= RXON_FILTER_ACCEPT_GRP_MSK
;
2838 *filter_flags
&= ~RXON_FILTER_ACCEPT_GRP_MSK
;
2840 if (changed_flags
& FIF_CONTROL
) {
2841 if (*total_flags
& FIF_CONTROL
)
2842 *filter_flags
|= RXON_FILTER_CTL2HOST_MSK
;
2844 *filter_flags
&= ~RXON_FILTER_CTL2HOST_MSK
;
2846 if (changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
2847 if (*total_flags
& FIF_BCN_PRBRESP_PROMISC
)
2848 *filter_flags
|= RXON_FILTER_BCON_AWARE_MSK
;
2850 *filter_flags
&= ~RXON_FILTER_BCON_AWARE_MSK
;
2853 /* We avoid iwl_commit_rxon here to commit the new filter flags
2854 * since mac80211 will call ieee80211_hw_config immediately.
2855 * (mc_list is not supported at this time). Otherwise, we need to
2856 * queue a background iwl_commit_rxon work.
2859 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
2860 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
2863 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
2864 struct ieee80211_if_init_conf
*conf
)
2866 struct iwl_priv
*priv
= hw
->priv
;
2868 IWL_DEBUG_MAC80211("enter\n");
2870 mutex_lock(&priv
->mutex
);
2872 if (iwl_is_ready_rf(priv
)) {
2873 iwl_scan_cancel_timeout(priv
, 100);
2874 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2875 iwl_commit_rxon(priv
);
2877 if (priv
->vif
== conf
->vif
) {
2879 memset(priv
->bssid
, 0, ETH_ALEN
);
2881 mutex_unlock(&priv
->mutex
);
2883 IWL_DEBUG_MAC80211("leave\n");
2887 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2888 static void iwl_bss_info_changed(struct ieee80211_hw
*hw
,
2889 struct ieee80211_vif
*vif
,
2890 struct ieee80211_bss_conf
*bss_conf
,
2893 struct iwl_priv
*priv
= hw
->priv
;
2895 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes
);
2897 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
2898 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2899 bss_conf
->use_short_preamble
);
2900 if (bss_conf
->use_short_preamble
)
2901 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2903 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2906 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
2907 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf
->use_cts_prot
);
2908 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
2909 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
2911 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
2914 if (changes
& BSS_CHANGED_HT
) {
2915 iwl_ht_conf(priv
, bss_conf
);
2916 iwl_set_rxon_chain(priv
);
2919 if (changes
& BSS_CHANGED_ASSOC
) {
2920 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf
->assoc
);
2921 /* This should never happen as this function should
2922 * never be called from interrupt context. */
2923 if (WARN_ON_ONCE(in_interrupt()))
2925 if (bss_conf
->assoc
) {
2926 priv
->assoc_id
= bss_conf
->aid
;
2927 priv
->beacon_int
= bss_conf
->beacon_int
;
2928 priv
->power_data
.dtim_period
= bss_conf
->dtim_period
;
2929 priv
->timestamp
= bss_conf
->timestamp
;
2930 priv
->assoc_capability
= bss_conf
->assoc_capability
;
2932 /* we have just associated, don't start scan too early
2933 * leave time for EAPOL exchange to complete
2935 priv
->next_scan_jiffies
= jiffies
+
2936 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
2937 mutex_lock(&priv
->mutex
);
2938 iwl_post_associate(priv
);
2939 mutex_unlock(&priv
->mutex
);
2942 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf
->assoc
);
2944 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
2945 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes
);
2946 iwl_send_rxon_assoc(priv
);
2951 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t ssid_len
)
2953 unsigned long flags
;
2954 struct iwl_priv
*priv
= hw
->priv
;
2957 IWL_DEBUG_MAC80211("enter\n");
2959 mutex_lock(&priv
->mutex
);
2960 spin_lock_irqsave(&priv
->lock
, flags
);
2962 if (!iwl_is_ready_rf(priv
)) {
2964 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2968 /* We don't schedule scan within next_scan_jiffies period.
2969 * Avoid scanning during possible EAPOL exchange, return
2970 * success immediately.
2972 if (priv
->next_scan_jiffies
&&
2973 time_after(priv
->next_scan_jiffies
, jiffies
)) {
2974 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2975 queue_work(priv
->workqueue
, &priv
->scan_completed
);
2980 /* if we just finished scan ask for delay */
2981 if (iwl_is_associated(priv
) && priv
->last_scan_jiffies
&&
2982 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
, jiffies
)) {
2983 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2984 queue_work(priv
->workqueue
, &priv
->scan_completed
);
2990 priv
->one_direct_scan
= 1;
2991 priv
->direct_ssid_len
= min_t(u8
, ssid_len
, IW_ESSID_MAX_SIZE
);
2992 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
2994 priv
->one_direct_scan
= 0;
2997 ret
= iwl_scan_initiate(priv
);
2999 IWL_DEBUG_MAC80211("leave\n");
3002 spin_unlock_irqrestore(&priv
->lock
, flags
);
3003 mutex_unlock(&priv
->mutex
);
3008 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
3009 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
3010 u32 iv32
, u16
*phase1key
)
3013 struct iwl_priv
*priv
= hw
->priv
;
3014 IWL_DEBUG_MAC80211("enter\n");
3016 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
3018 IWL_DEBUG_MAC80211("leave\n");
3021 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3022 const u8
*local_addr
, const u8
*addr
,
3023 struct ieee80211_key_conf
*key
)
3025 struct iwl_priv
*priv
= hw
->priv
;
3027 u8 sta_id
= IWL_INVALID_STATION
;
3028 u8 is_default_wep_key
= 0;
3030 IWL_DEBUG_MAC80211("enter\n");
3032 if (priv
->hw_params
.sw_crypto
) {
3033 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3037 if (is_zero_ether_addr(addr
))
3038 /* only support pairwise keys */
3041 sta_id
= iwl_find_station(priv
, addr
);
3042 if (sta_id
== IWL_INVALID_STATION
) {
3043 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3049 mutex_lock(&priv
->mutex
);
3050 iwl_scan_cancel_timeout(priv
, 100);
3051 mutex_unlock(&priv
->mutex
);
3053 /* If we are getting WEP group key and we didn't receive any key mapping
3054 * so far, we are in legacy wep mode (group key only), otherwise we are
3056 * In legacy wep mode, we use another host command to the uCode */
3057 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
3058 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
3060 is_default_wep_key
= !priv
->key_mapping_key
;
3062 is_default_wep_key
=
3063 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
3068 if (is_default_wep_key
)
3069 ret
= iwl_set_default_wep_key(priv
, key
);
3071 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
3073 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3076 if (is_default_wep_key
)
3077 ret
= iwl_remove_default_wep_key(priv
, key
);
3079 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
3081 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3087 IWL_DEBUG_MAC80211("leave\n");
3092 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
3093 const struct ieee80211_tx_queue_params
*params
)
3095 struct iwl_priv
*priv
= hw
->priv
;
3096 unsigned long flags
;
3099 IWL_DEBUG_MAC80211("enter\n");
3101 if (!iwl_is_ready_rf(priv
)) {
3102 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3106 if (queue
>= AC_NUM
) {
3107 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
3111 q
= AC_NUM
- 1 - queue
;
3113 spin_lock_irqsave(&priv
->lock
, flags
);
3115 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
3116 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
3117 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
3118 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
3119 cpu_to_le16((params
->txop
* 32));
3121 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
3122 priv
->qos_data
.qos_active
= 1;
3124 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
3125 iwl_activate_qos(priv
, 1);
3126 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
3127 iwl_activate_qos(priv
, 0);
3129 spin_unlock_irqrestore(&priv
->lock
, flags
);
3131 IWL_DEBUG_MAC80211("leave\n");
3135 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
3136 enum ieee80211_ampdu_mlme_action action
,
3137 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
3139 struct iwl_priv
*priv
= hw
->priv
;
3141 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3144 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
3148 case IEEE80211_AMPDU_RX_START
:
3149 IWL_DEBUG_HT("start Rx\n");
3150 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
3151 case IEEE80211_AMPDU_RX_STOP
:
3152 IWL_DEBUG_HT("stop Rx\n");
3153 return iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
3154 case IEEE80211_AMPDU_TX_START
:
3155 IWL_DEBUG_HT("start Tx\n");
3156 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
3157 case IEEE80211_AMPDU_TX_STOP
:
3158 IWL_DEBUG_HT("stop Tx\n");
3159 return iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
3161 IWL_DEBUG_HT("unknown\n");
3168 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
3169 struct ieee80211_tx_queue_stats
*stats
)
3171 struct iwl_priv
*priv
= hw
->priv
;
3173 struct iwl_tx_queue
*txq
;
3174 struct iwl_queue
*q
;
3175 unsigned long flags
;
3177 IWL_DEBUG_MAC80211("enter\n");
3179 if (!iwl_is_ready_rf(priv
)) {
3180 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3184 spin_lock_irqsave(&priv
->lock
, flags
);
3186 for (i
= 0; i
< AC_NUM
; i
++) {
3187 txq
= &priv
->txq
[i
];
3189 avail
= iwl_queue_space(q
);
3191 stats
[i
].len
= q
->n_window
- avail
;
3192 stats
[i
].limit
= q
->n_window
- q
->high_mark
;
3193 stats
[i
].count
= q
->n_window
;
3196 spin_unlock_irqrestore(&priv
->lock
, flags
);
3198 IWL_DEBUG_MAC80211("leave\n");
3203 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
3204 struct ieee80211_low_level_stats
*stats
)
3206 struct iwl_priv
*priv
= hw
->priv
;
3209 IWL_DEBUG_MAC80211("enter\n");
3210 IWL_DEBUG_MAC80211("leave\n");
3215 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
3217 struct iwl_priv
*priv
= hw
->priv
;
3218 unsigned long flags
;
3220 mutex_lock(&priv
->mutex
);
3221 IWL_DEBUG_MAC80211("enter\n");
3223 spin_lock_irqsave(&priv
->lock
, flags
);
3224 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
3225 spin_unlock_irqrestore(&priv
->lock
, flags
);
3227 iwl_reset_qos(priv
);
3229 spin_lock_irqsave(&priv
->lock
, flags
);
3231 priv
->assoc_capability
= 0;
3232 priv
->assoc_station_added
= 0;
3234 /* new association get rid of ibss beacon skb */
3235 if (priv
->ibss_beacon
)
3236 dev_kfree_skb(priv
->ibss_beacon
);
3238 priv
->ibss_beacon
= NULL
;
3240 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
3241 priv
->timestamp
= 0;
3242 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
))
3243 priv
->beacon_int
= 0;
3245 spin_unlock_irqrestore(&priv
->lock
, flags
);
3247 if (!iwl_is_ready_rf(priv
)) {
3248 IWL_DEBUG_MAC80211("leave - not ready\n");
3249 mutex_unlock(&priv
->mutex
);
3253 /* we are restarting association process
3254 * clear RXON_FILTER_ASSOC_MSK bit
3256 if (priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
3257 iwl_scan_cancel_timeout(priv
, 100);
3258 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3259 iwl_commit_rxon(priv
);
3262 iwl_power_update_mode(priv
, 0);
3264 /* Per mac80211.h: This is only used in IBSS mode... */
3265 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
3267 /* switch to CAM during association period.
3268 * the ucode will block any association/authentication
3269 * frome during assiciation period if it can not hear
3270 * the AP because of PM. the timer enable PM back is
3271 * association do not complete
3273 if (priv
->hw
->conf
.channel
->flags
& (IEEE80211_CHAN_PASSIVE_SCAN
|
3274 IEEE80211_CHAN_RADAR
))
3275 iwl_power_disable_management(priv
, 3000);
3277 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3278 mutex_unlock(&priv
->mutex
);
3284 mutex_unlock(&priv
->mutex
);
3286 IWL_DEBUG_MAC80211("leave\n");
3289 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3291 struct iwl_priv
*priv
= hw
->priv
;
3292 unsigned long flags
;
3295 IWL_DEBUG_MAC80211("enter\n");
3297 if (!iwl_is_ready_rf(priv
)) {
3298 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3302 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
3303 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3307 spin_lock_irqsave(&priv
->lock
, flags
);
3309 if (priv
->ibss_beacon
)
3310 dev_kfree_skb(priv
->ibss_beacon
);
3312 priv
->ibss_beacon
= skb
;
3315 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
3316 priv
->timestamp
= le64_to_cpu(timestamp
);
3318 IWL_DEBUG_MAC80211("leave\n");
3319 spin_unlock_irqrestore(&priv
->lock
, flags
);
3321 iwl_reset_qos(priv
);
3323 iwl_post_associate(priv
);
3329 /*****************************************************************************
3333 *****************************************************************************/
3335 #ifdef CONFIG_IWLWIFI_DEBUG
3338 * The following adds a new attribute to the sysfs representation
3339 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3340 * used for controlling the debug level.
3342 * See the level definitions in iwl for details.
3345 static ssize_t
show_debug_level(struct device
*d
,
3346 struct device_attribute
*attr
, char *buf
)
3348 struct iwl_priv
*priv
= d
->driver_data
;
3350 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
3352 static ssize_t
store_debug_level(struct device
*d
,
3353 struct device_attribute
*attr
,
3354 const char *buf
, size_t count
)
3356 struct iwl_priv
*priv
= d
->driver_data
;
3360 ret
= strict_strtoul(buf
, 0, &val
);
3362 printk(KERN_INFO DRV_NAME
3363 ": %s is not in hex or decimal form.\n", buf
);
3365 priv
->debug_level
= val
;
3367 return strnlen(buf
, count
);
3370 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3371 show_debug_level
, store_debug_level
);
3374 #endif /* CONFIG_IWLWIFI_DEBUG */
3377 static ssize_t
show_version(struct device
*d
,
3378 struct device_attribute
*attr
, char *buf
)
3380 struct iwl_priv
*priv
= d
->driver_data
;
3381 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
3385 if (palive
->is_valid
)
3386 pos
+= sprintf(buf
+ pos
,
3387 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3388 "fw type: 0x%01X 0x%01X\n",
3389 palive
->ucode_major
, palive
->ucode_minor
,
3390 palive
->sw_rev
[0], palive
->sw_rev
[1],
3391 palive
->ver_type
, palive
->ver_subtype
);
3393 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
3396 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
3397 pos
+= sprintf(buf
+ pos
, "EEPROM version: 0x%x\n",
3400 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
3406 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
3408 static ssize_t
show_temperature(struct device
*d
,
3409 struct device_attribute
*attr
, char *buf
)
3411 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3413 if (!iwl_is_alive(priv
))
3416 return sprintf(buf
, "%d\n", priv
->temperature
);
3419 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3421 static ssize_t
show_tx_power(struct device
*d
,
3422 struct device_attribute
*attr
, char *buf
)
3424 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3426 if (!iwl_is_ready_rf(priv
))
3427 return sprintf(buf
, "off\n");
3429 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3432 static ssize_t
store_tx_power(struct device
*d
,
3433 struct device_attribute
*attr
,
3434 const char *buf
, size_t count
)
3436 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3440 ret
= strict_strtoul(buf
, 10, &val
);
3442 printk(KERN_INFO DRV_NAME
3443 ": %s is not in decimal form.\n", buf
);
3445 iwl_set_tx_power(priv
, val
, false);
3450 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3452 static ssize_t
show_flags(struct device
*d
,
3453 struct device_attribute
*attr
, char *buf
)
3455 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3457 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3460 static ssize_t
store_flags(struct device
*d
,
3461 struct device_attribute
*attr
,
3462 const char *buf
, size_t count
)
3464 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3467 int ret
= strict_strtoul(buf
, 0, &val
);
3472 mutex_lock(&priv
->mutex
);
3473 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3474 /* Cancel any currently running scans... */
3475 if (iwl_scan_cancel_timeout(priv
, 100))
3476 IWL_WARNING("Could not cancel scan.\n");
3478 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags
);
3479 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3480 iwl_commit_rxon(priv
);
3483 mutex_unlock(&priv
->mutex
);
3488 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3490 static ssize_t
show_filter_flags(struct device
*d
,
3491 struct device_attribute
*attr
, char *buf
)
3493 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3495 return sprintf(buf
, "0x%04X\n",
3496 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3499 static ssize_t
store_filter_flags(struct device
*d
,
3500 struct device_attribute
*attr
,
3501 const char *buf
, size_t count
)
3503 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3506 int ret
= strict_strtoul(buf
, 0, &val
);
3509 filter_flags
= (u32
)val
;
3511 mutex_lock(&priv
->mutex
);
3512 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3513 /* Cancel any currently running scans... */
3514 if (iwl_scan_cancel_timeout(priv
, 100))
3515 IWL_WARNING("Could not cancel scan.\n");
3517 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3518 "0x%04X\n", filter_flags
);
3519 priv
->staging_rxon
.filter_flags
=
3520 cpu_to_le32(filter_flags
);
3521 iwl_commit_rxon(priv
);
3524 mutex_unlock(&priv
->mutex
);
3529 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3530 store_filter_flags
);
3532 static ssize_t
store_retry_rate(struct device
*d
,
3533 struct device_attribute
*attr
,
3534 const char *buf
, size_t count
)
3536 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3538 int ret
= strict_strtol(buf
, 10, &val
);
3542 priv
->retry_rate
= (val
> 0) ? val
: 1;
3547 static ssize_t
show_retry_rate(struct device
*d
,
3548 struct device_attribute
*attr
, char *buf
)
3550 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3551 return sprintf(buf
, "%d", priv
->retry_rate
);
3554 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3557 static ssize_t
store_power_level(struct device
*d
,
3558 struct device_attribute
*attr
,
3559 const char *buf
, size_t count
)
3561 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3566 mutex_lock(&priv
->mutex
);
3568 if (!iwl_is_ready(priv
)) {
3573 ret
= strict_strtoul(buf
, 10, &mode
);
3577 ret
= iwl_power_set_user_mode(priv
, mode
);
3579 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3585 mutex_unlock(&priv
->mutex
);
3589 static ssize_t
show_power_level(struct device
*d
,
3590 struct device_attribute
*attr
, char *buf
)
3592 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3593 int mode
= priv
->power_data
.user_power_setting
;
3594 int system
= priv
->power_data
.system_power_setting
;
3595 int level
= priv
->power_data
.power_mode
;
3599 case IWL_POWER_SYS_AUTO
:
3600 p
+= sprintf(p
, "SYSTEM:auto");
3602 case IWL_POWER_SYS_AC
:
3603 p
+= sprintf(p
, "SYSTEM:ac");
3605 case IWL_POWER_SYS_BATTERY
:
3606 p
+= sprintf(p
, "SYSTEM:battery");
3610 p
+= sprintf(p
, "\tMODE:%s", (mode
< IWL_POWER_AUTO
) ?
3612 p
+= sprintf(p
, "\tINDEX:%d", level
);
3613 p
+= sprintf(p
, "\n");
3617 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
3621 static ssize_t
show_statistics(struct device
*d
,
3622 struct device_attribute
*attr
, char *buf
)
3624 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3625 u32 size
= sizeof(struct iwl_notif_statistics
);
3626 u32 len
= 0, ofs
= 0;
3627 u8
*data
= (u8
*)&priv
->statistics
;
3630 if (!iwl_is_alive(priv
))
3633 mutex_lock(&priv
->mutex
);
3634 rc
= iwl_send_statistics_request(priv
, 0);
3635 mutex_unlock(&priv
->mutex
);
3639 "Error sending statistics request: 0x%08X\n", rc
);
3643 while (size
&& (PAGE_SIZE
- len
)) {
3644 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3645 PAGE_SIZE
- len
, 1);
3647 if (PAGE_SIZE
- len
)
3651 size
-= min(size
, 16U);
3657 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3659 static ssize_t
show_status(struct device
*d
,
3660 struct device_attribute
*attr
, char *buf
)
3662 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3663 if (!iwl_is_alive(priv
))
3665 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3668 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3670 /*****************************************************************************
3672 * driver setup and teardown
3674 *****************************************************************************/
3676 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3678 priv
->workqueue
= create_workqueue(DRV_NAME
);
3680 init_waitqueue_head(&priv
->wait_command_queue
);
3682 INIT_WORK(&priv
->up
, iwl_bg_up
);
3683 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3684 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3685 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
3686 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3687 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3688 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3689 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3691 iwl_setup_scan_deferred_work(priv
);
3692 iwl_setup_power_deferred_work(priv
);
3694 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3695 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3697 init_timer(&priv
->statistics_periodic
);
3698 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3699 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3701 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3702 iwl_irq_tasklet
, (unsigned long)priv
);
3705 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3707 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3708 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3710 cancel_delayed_work_sync(&priv
->init_alive_start
);
3711 cancel_delayed_work(&priv
->scan_check
);
3712 cancel_delayed_work_sync(&priv
->set_power_save
);
3713 cancel_delayed_work(&priv
->alive_start
);
3714 cancel_work_sync(&priv
->beacon_update
);
3715 del_timer_sync(&priv
->statistics_periodic
);
3718 static struct attribute
*iwl_sysfs_entries
[] = {
3719 &dev_attr_flags
.attr
,
3720 &dev_attr_filter_flags
.attr
,
3721 &dev_attr_power_level
.attr
,
3722 &dev_attr_retry_rate
.attr
,
3723 &dev_attr_statistics
.attr
,
3724 &dev_attr_status
.attr
,
3725 &dev_attr_temperature
.attr
,
3726 &dev_attr_tx_power
.attr
,
3727 #ifdef CONFIG_IWLWIFI_DEBUG
3728 &dev_attr_debug_level
.attr
,
3730 &dev_attr_version
.attr
,
3735 static struct attribute_group iwl_attribute_group
= {
3736 .name
= NULL
, /* put in device directory */
3737 .attrs
= iwl_sysfs_entries
,
3740 static struct ieee80211_ops iwl_hw_ops
= {
3742 .start
= iwl_mac_start
,
3743 .stop
= iwl_mac_stop
,
3744 .add_interface
= iwl_mac_add_interface
,
3745 .remove_interface
= iwl_mac_remove_interface
,
3746 .config
= iwl_mac_config
,
3747 .config_interface
= iwl_mac_config_interface
,
3748 .configure_filter
= iwl_configure_filter
,
3749 .set_key
= iwl_mac_set_key
,
3750 .update_tkip_key
= iwl_mac_update_tkip_key
,
3751 .get_stats
= iwl_mac_get_stats
,
3752 .get_tx_stats
= iwl_mac_get_tx_stats
,
3753 .conf_tx
= iwl_mac_conf_tx
,
3754 .reset_tsf
= iwl_mac_reset_tsf
,
3755 .bss_info_changed
= iwl_bss_info_changed
,
3756 .ampdu_action
= iwl_mac_ampdu_action
,
3757 .hw_scan
= iwl_mac_hw_scan
3760 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3763 struct iwl_priv
*priv
;
3764 struct ieee80211_hw
*hw
;
3765 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3766 unsigned long flags
;
3768 /************************
3769 * 1. Allocating HW data
3770 ************************/
3772 /* Disabling hardware scan means that mac80211 will perform scans
3773 * "the hard way", rather than using device's scan. */
3774 if (cfg
->mod_params
->disable_hw_scan
) {
3775 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
3776 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3777 "Disabling hw_scan\n");
3778 iwl_hw_ops
.hw_scan
= NULL
;
3781 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3787 /* At this point both hw and priv are allocated. */
3789 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3791 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3793 priv
->pci_dev
= pdev
;
3795 #ifdef CONFIG_IWLWIFI_DEBUG
3796 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
3797 atomic_set(&priv
->restrict_refcnt
, 0);
3800 /**************************
3801 * 2. Initializing PCI bus
3802 **************************/
3803 if (pci_enable_device(pdev
)) {
3805 goto out_ieee80211_free_hw
;
3808 pci_set_master(pdev
);
3810 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3812 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3814 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3816 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3817 /* both attempts failed: */
3819 printk(KERN_WARNING
"%s: No suitable DMA available.\n",
3821 goto out_pci_disable_device
;
3825 err
= pci_request_regions(pdev
, DRV_NAME
);
3827 goto out_pci_disable_device
;
3829 pci_set_drvdata(pdev
, priv
);
3832 /***********************
3833 * 3. Read REV register
3834 ***********************/
3835 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3836 if (!priv
->hw_base
) {
3838 goto out_pci_release_regions
;
3841 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3842 (unsigned long long) pci_resource_len(pdev
, 0));
3843 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
3845 iwl_hw_detect(priv
);
3846 printk(KERN_INFO DRV_NAME
3847 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3848 priv
->cfg
->name
, priv
->hw_rev
);
3850 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3851 * PCI Tx retries from interfering with C3 CPU state */
3852 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3855 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
3857 IWL_DEBUG_INFO("Failed to init APMG\n");
3863 /* Read the EEPROM */
3864 err
= iwl_eeprom_init(priv
);
3866 IWL_ERROR("Unable to init EEPROM\n");
3869 err
= iwl_eeprom_check_version(priv
);
3871 goto out_free_eeprom
;
3873 /* extract MAC Address */
3874 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
3875 IWL_DEBUG_INFO("MAC address: %pM\n", priv
->mac_addr
);
3876 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
3878 /************************
3879 * 5. Setup HW constants
3880 ************************/
3881 if (iwl_set_hw_params(priv
)) {
3882 IWL_ERROR("failed to set hw parameters\n");
3883 goto out_free_eeprom
;
3886 /*******************
3888 *******************/
3890 err
= iwl_init_drv(priv
);
3892 goto out_free_eeprom
;
3893 /* At this point both hw and priv are initialized. */
3895 /**********************************
3896 * 7. Initialize module parameters
3897 **********************************/
3899 /* Disable radio (SW RF KILL) via parameter when loading driver */
3900 if (priv
->cfg
->mod_params
->disable
) {
3901 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3902 IWL_DEBUG_INFO("Radio disabled.\n");
3905 /********************
3907 ********************/
3908 spin_lock_irqsave(&priv
->lock
, flags
);
3909 iwl_disable_interrupts(priv
);
3910 spin_unlock_irqrestore(&priv
->lock
, flags
);
3912 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3914 IWL_ERROR("failed to create sysfs device attributes\n");
3915 goto out_uninit_drv
;
3919 iwl_setup_deferred_work(priv
);
3920 iwl_setup_rx_handlers(priv
);
3922 /********************
3924 ********************/
3925 pci_save_state(pdev
);
3926 pci_disable_device(pdev
);
3928 /**********************************
3929 * 10. Setup and register mac80211
3930 **********************************/
3932 err
= iwl_setup_mac(priv
);
3934 goto out_remove_sysfs
;
3936 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
3938 IWL_ERROR("failed to create debugfs files\n");
3940 err
= iwl_rfkill_init(priv
);
3942 IWL_ERROR("Unable to initialize RFKILL system. "
3943 "Ignoring error: %d\n", err
);
3944 iwl_power_initialize(priv
);
3948 destroy_workqueue(priv
->workqueue
);
3949 priv
->workqueue
= NULL
;
3950 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3952 iwl_uninit_drv(priv
);
3954 iwl_eeprom_free(priv
);
3956 pci_iounmap(pdev
, priv
->hw_base
);
3957 out_pci_release_regions
:
3958 pci_set_drvdata(pdev
, NULL
);
3959 pci_release_regions(pdev
);
3960 out_pci_disable_device
:
3961 pci_disable_device(pdev
);
3962 out_ieee80211_free_hw
:
3963 ieee80211_free_hw(priv
->hw
);
3968 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3970 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3971 unsigned long flags
;
3976 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3978 iwl_dbgfs_unregister(priv
);
3979 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3981 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3982 * to be called and iwl_down since we are removing the device
3983 * we need to set STATUS_EXIT_PENDING bit.
3985 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3986 if (priv
->mac80211_registered
) {
3987 ieee80211_unregister_hw(priv
->hw
);
3988 priv
->mac80211_registered
= 0;
3993 /* make sure we flush any pending irq or
3994 * tasklet for the driver
3996 spin_lock_irqsave(&priv
->lock
, flags
);
3997 iwl_disable_interrupts(priv
);
3998 spin_unlock_irqrestore(&priv
->lock
, flags
);
4000 iwl_synchronize_irq(priv
);
4002 iwl_rfkill_unregister(priv
);
4003 iwl_dealloc_ucode_pci(priv
);
4006 iwl_rx_queue_free(priv
, &priv
->rxq
);
4007 iwl_hw_txq_ctx_free(priv
);
4009 iwl_clear_stations_table(priv
);
4010 iwl_eeprom_free(priv
);
4013 /*netif_stop_queue(dev); */
4014 flush_workqueue(priv
->workqueue
);
4016 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4017 * priv->workqueue... so we can't take down the workqueue
4019 destroy_workqueue(priv
->workqueue
);
4020 priv
->workqueue
= NULL
;
4022 pci_iounmap(pdev
, priv
->hw_base
);
4023 pci_release_regions(pdev
);
4024 pci_disable_device(pdev
);
4025 pci_set_drvdata(pdev
, NULL
);
4027 iwl_uninit_drv(priv
);
4029 if (priv
->ibss_beacon
)
4030 dev_kfree_skb(priv
->ibss_beacon
);
4032 ieee80211_free_hw(priv
->hw
);
4037 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4039 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4041 if (priv
->is_open
) {
4042 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
4043 iwl_mac_stop(priv
->hw
);
4047 /* pci driver assumes state will be saved in this function.
4048 * pci state is saved and device disabled when interface is
4049 * stopped, so at this time pci device will always be disabled -
4050 * whether interface was started or not. saving pci state now will
4051 * cause saved state be that of a disabled device, which will cause
4052 * problems during resume in that we will end up with a disabled device.
4054 * indicate that the current saved state (from when interface was
4055 * stopped) is valid. if interface was never up at time of suspend
4056 * then the saved state will still be valid as it was saved during
4058 pdev
->state_saved
= true;
4060 pci_set_power_state(pdev
, PCI_D3hot
);
4065 static int iwl_pci_resume(struct pci_dev
*pdev
)
4067 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4069 pci_set_power_state(pdev
, PCI_D0
);
4072 iwl_mac_start(priv
->hw
);
4074 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
4078 #endif /* CONFIG_PM */
4080 /*****************************************************************************
4082 * driver and module entry point
4084 *****************************************************************************/
4086 /* Hardware specific file defines the PCI IDs table for that hardware module */
4087 static struct pci_device_id iwl_hw_card_ids
[] = {
4088 #ifdef CONFIG_IWL4965
4089 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
4090 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
4091 #endif /* CONFIG_IWL4965 */
4092 #ifdef CONFIG_IWL5000
4093 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
4094 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
4095 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
4096 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
4097 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
4098 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
4099 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
4100 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
4101 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
4102 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
4103 /* 5350 WiFi/WiMax */
4104 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
4105 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
4106 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
4107 /* 5150 Wifi/WiMax */
4108 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
4109 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
4110 #endif /* CONFIG_IWL5000 */
4114 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
4116 static struct pci_driver iwl_driver
= {
4118 .id_table
= iwl_hw_card_ids
,
4119 .probe
= iwl_pci_probe
,
4120 .remove
= __devexit_p(iwl_pci_remove
),
4122 .suspend
= iwl_pci_suspend
,
4123 .resume
= iwl_pci_resume
,
4127 static int __init
iwl_init(void)
4131 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4132 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4134 ret
= iwlagn_rate_control_register();
4136 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret
);
4140 ret
= pci_register_driver(&iwl_driver
);
4142 IWL_ERROR("Unable to initialize PCI module\n");
4143 goto error_register
;
4149 iwlagn_rate_control_unregister();
4153 static void __exit
iwl_exit(void)
4155 pci_unregister_driver(&iwl_driver
);
4156 iwlagn_rate_control_unregister();
4159 module_exit(iwl_exit
);
4160 module_init(iwl_init
);