1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
86 MODULE_VERSION(DRV_VERSION
);
87 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params
= {
92 .num_of_queues
= IWL39_MAX_NUM_QUEUES
,
95 /* the rest are 0 by default */
98 /*************** STATION TABLE MANAGEMENT ****
99 * mac80211 should be examined to determine if sta_info is duplicating
100 * the functionality provided here
103 /**************************************************************/
104 #if 0 /* temporary disable till we add real remove station */
106 * iwl3945_remove_station - Remove driver's knowledge of station.
108 * NOTE: This does not remove station from device's station table.
110 static u8
iwl3945_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
112 int index
= IWL_INVALID_STATION
;
116 spin_lock_irqsave(&priv
->sta_lock
, flags
);
120 else if (is_broadcast_ether_addr(addr
))
121 index
= priv
->hw_params
.bcast_sta_id
;
123 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++)
124 if (priv
->stations_39
[i
].used
&&
125 !compare_ether_addr(priv
->stations_39
[i
].sta
.sta
.addr
,
131 if (unlikely(index
== IWL_INVALID_STATION
))
134 if (priv
->stations_39
[index
].used
) {
135 priv
->stations_39
[index
].used
= 0;
136 priv
->num_stations
--;
139 BUG_ON(priv
->num_stations
< 0);
142 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
148 * iwl3945_clear_stations_table - Clear the driver's station table
150 * NOTE: This does not clear or otherwise alter the device's station table.
152 void iwl3945_clear_stations_table(struct iwl_priv
*priv
)
156 spin_lock_irqsave(&priv
->sta_lock
, flags
);
158 priv
->num_stations
= 0;
159 memset(priv
->stations_39
, 0, sizeof(priv
->stations_39
));
161 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
165 * iwl3945_add_station - Add station to station tables in driver and device
167 u8
iwl3945_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
, u8 flags
, struct ieee80211_sta_ht_cap
*ht_info
)
170 int index
= IWL_INVALID_STATION
;
171 struct iwl3945_station_entry
*station
;
172 unsigned long flags_spin
;
175 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
178 else if (is_broadcast_ether_addr(addr
))
179 index
= priv
->hw_params
.bcast_sta_id
;
181 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++) {
182 if (!compare_ether_addr(priv
->stations_39
[i
].sta
.sta
.addr
,
188 if (!priv
->stations_39
[i
].used
&&
189 index
== IWL_INVALID_STATION
)
193 /* These two conditions has the same outcome but keep them separate
194 since they have different meaning */
195 if (unlikely(index
== IWL_INVALID_STATION
)) {
196 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
200 if (priv
->stations_39
[index
].used
&&
201 !compare_ether_addr(priv
->stations_39
[index
].sta
.sta
.addr
, addr
)) {
202 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
206 IWL_DEBUG_ASSOC(priv
, "Add STA ID %d: %pM\n", index
, addr
);
207 station
= &priv
->stations_39
[index
];
209 priv
->num_stations
++;
211 /* Set up the REPLY_ADD_STA command to send to device */
212 memset(&station
->sta
, 0, sizeof(struct iwl3945_addsta_cmd
));
213 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
214 station
->sta
.mode
= 0;
215 station
->sta
.sta
.sta_id
= index
;
216 station
->sta
.station_flags
= 0;
218 if (priv
->band
== IEEE80211_BAND_5GHZ
)
219 rate
= IWL_RATE_6M_PLCP
;
221 rate
= IWL_RATE_1M_PLCP
;
223 /* Turn on both antennas for the station... */
224 station
->sta
.rate_n_flags
=
225 iwl3945_hw_set_rate_n_flags(rate
, RATE_MCS_ANT_AB_MSK
);
227 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
229 /* Add station to device's station table */
230 iwl_send_add_sta(priv
,
231 (struct iwl_addsta_cmd
*)&station
->sta
, flags
);
237 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
238 * @priv: eeprom and antenna fields are used to determine antenna flags
240 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
241 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
243 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
244 * IWL_ANTENNA_MAIN - Force MAIN antenna
245 * IWL_ANTENNA_AUX - Force AUX antenna
247 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
249 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
251 switch (iwl3945_mod_params
.antenna
) {
252 case IWL_ANTENNA_DIVERSITY
:
255 case IWL_ANTENNA_MAIN
:
256 if (eeprom
->antenna_switch_type
)
257 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
258 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
260 case IWL_ANTENNA_AUX
:
261 if (eeprom
->antenna_switch_type
)
262 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
263 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
266 /* bad antenna selector value */
267 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
268 iwl3945_mod_params
.antenna
);
270 return 0; /* "diversity" is default if error */
273 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
274 struct ieee80211_key_conf
*keyconf
,
278 __le16 key_flags
= 0;
281 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
282 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
284 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
285 key_flags
|= STA_KEY_MULTICAST_MSK
;
287 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
288 keyconf
->hw_key_idx
= keyconf
->keyidx
;
289 key_flags
&= ~STA_KEY_FLG_INVALID
;
291 spin_lock_irqsave(&priv
->sta_lock
, flags
);
292 priv
->stations_39
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
293 priv
->stations_39
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
294 memcpy(priv
->stations_39
[sta_id
].keyinfo
.key
, keyconf
->key
,
297 memcpy(priv
->stations_39
[sta_id
].sta
.key
.key
, keyconf
->key
,
300 if ((priv
->stations_39
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
301 == STA_KEY_FLG_NO_ENC
)
302 priv
->stations_39
[sta_id
].sta
.key
.key_offset
=
303 iwl_get_free_ucode_key_index(priv
);
304 /* else, we are overriding an existing key => no need to allocated room
307 WARN(priv
->stations_39
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
308 "no space for a new key");
310 priv
->stations_39
[sta_id
].sta
.key
.key_flags
= key_flags
;
311 priv
->stations_39
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
312 priv
->stations_39
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
314 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
316 ret
= iwl_send_add_sta(priv
,
317 (struct iwl_addsta_cmd
*)&priv
->stations_39
[sta_id
].sta
, CMD_ASYNC
);
319 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
324 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
325 struct ieee80211_key_conf
*keyconf
,
331 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
332 struct ieee80211_key_conf
*keyconf
,
338 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
342 spin_lock_irqsave(&priv
->sta_lock
, flags
);
343 memset(&priv
->stations_39
[sta_id
].keyinfo
, 0, sizeof(struct iwl3945_hw_key
));
344 memset(&priv
->stations_39
[sta_id
].sta
.key
, 0,
345 sizeof(struct iwl4965_keyinfo
));
346 priv
->stations_39
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
347 priv
->stations_39
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
348 priv
->stations_39
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
349 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
351 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
352 iwl_send_add_sta(priv
,
353 (struct iwl_addsta_cmd
*)&priv
->stations_39
[sta_id
].sta
, 0);
357 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
358 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
362 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
364 switch (keyconf
->alg
) {
366 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
369 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
372 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
375 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
379 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
380 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
386 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
388 int ret
= -EOPNOTSUPP
;
393 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
394 struct ieee80211_key_conf
*key
)
396 if (key
->alg
== ALG_WEP
)
399 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
403 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
405 struct list_head
*element
;
407 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
410 while (!list_empty(&priv
->free_frames
)) {
411 element
= priv
->free_frames
.next
;
413 kfree(list_entry(element
, struct iwl3945_frame
, list
));
414 priv
->frames_count
--;
417 if (priv
->frames_count
) {
418 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
420 priv
->frames_count
= 0;
424 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
426 struct iwl3945_frame
*frame
;
427 struct list_head
*element
;
428 if (list_empty(&priv
->free_frames
)) {
429 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
431 IWL_ERR(priv
, "Could not allocate frame!\n");
435 priv
->frames_count
++;
439 element
= priv
->free_frames
.next
;
441 return list_entry(element
, struct iwl3945_frame
, list
);
444 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
446 memset(frame
, 0, sizeof(*frame
));
447 list_add(&frame
->list
, &priv
->free_frames
);
450 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
451 struct ieee80211_hdr
*hdr
,
455 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
456 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
457 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
460 if (priv
->ibss_beacon
->len
> left
)
463 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
465 return priv
->ibss_beacon
->len
;
468 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
470 struct iwl3945_frame
*frame
;
471 unsigned int frame_size
;
475 frame
= iwl3945_get_free_frame(priv
);
478 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
483 rate
= iwl_rate_get_lowest_plcp(priv
);
485 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
487 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
490 iwl3945_free_frame(priv
, frame
);
495 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
497 if (priv
->shared_virt
)
498 pci_free_consistent(priv
->pci_dev
,
499 sizeof(struct iwl3945_shared
),
504 #define MAX_UCODE_BEACON_INTERVAL 1024
505 #define INTEL_CONN_LISTEN_INTERVAL cpu_to_le16(0xA)
507 static __le16
iwl3945_adjust_beacon_interval(u16 beacon_val
)
510 u16 beacon_factor
= 0;
513 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
514 / MAX_UCODE_BEACON_INTERVAL
;
515 new_val
= beacon_val
/ beacon_factor
;
517 return cpu_to_le16(new_val
);
520 static void iwl3945_setup_rxon_timing(struct iwl_priv
*priv
)
522 u64 interval_tm_unit
;
525 struct ieee80211_conf
*conf
= NULL
;
528 conf
= ieee80211_get_hw_conf(priv
->hw
);
530 spin_lock_irqsave(&priv
->lock
, flags
);
531 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
532 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
534 tsf
= priv
->timestamp
;
536 beacon_int
= priv
->beacon_int
;
537 spin_unlock_irqrestore(&priv
->lock
, flags
);
539 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
540 if (beacon_int
== 0) {
541 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
542 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
544 priv
->rxon_timing
.beacon_interval
=
545 cpu_to_le16(beacon_int
);
546 priv
->rxon_timing
.beacon_interval
=
547 iwl3945_adjust_beacon_interval(
548 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
551 priv
->rxon_timing
.atim_window
= 0;
553 priv
->rxon_timing
.beacon_interval
=
554 iwl3945_adjust_beacon_interval(
555 priv
->vif
->bss_conf
.beacon_int
);
556 /* TODO: we need to get atim_window from upper stack
557 * for now we set to 0 */
558 priv
->rxon_timing
.atim_window
= 0;
562 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
563 result
= do_div(tsf
, interval_tm_unit
);
564 priv
->rxon_timing
.beacon_init_val
=
565 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
567 IWL_DEBUG_ASSOC(priv
,
568 "beacon interval %d beacon timer %d beacon tim %d\n",
569 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
570 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
571 le16_to_cpu(priv
->rxon_timing
.atim_window
));
574 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
575 struct ieee80211_tx_info
*info
,
577 struct sk_buff
*skb_frag
,
580 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
581 struct iwl3945_hw_key
*keyinfo
=
582 &priv
->stations_39
[sta_id
].keyinfo
;
584 switch (keyinfo
->alg
) {
586 tx
->sec_ctl
= TX_CMD_SEC_CCM
;
587 memcpy(tx
->key
, keyinfo
->key
, keyinfo
->keylen
);
588 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
595 tx
->sec_ctl
= TX_CMD_SEC_WEP
|
596 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
598 if (keyinfo
->keylen
== 13)
599 tx
->sec_ctl
|= TX_CMD_SEC_KEY128
;
601 memcpy(&tx
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
603 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
604 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
608 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
614 * handle build REPLY_TX command notification.
616 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
618 struct ieee80211_tx_info
*info
,
619 struct ieee80211_hdr
*hdr
, u8 std_id
)
621 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
622 __le32 tx_flags
= tx
->tx_flags
;
623 __le16 fc
= hdr
->frame_control
;
624 u8 rc_flags
= info
->control
.rates
[0].flags
;
626 tx
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
627 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
628 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
629 if (ieee80211_is_mgmt(fc
))
630 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
631 if (ieee80211_is_probe_resp(fc
) &&
632 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
633 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
635 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
636 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
640 if (ieee80211_has_morefrags(fc
))
641 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
643 if (ieee80211_is_data_qos(fc
)) {
644 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
645 tx
->tid_tspec
= qc
[0] & 0xf;
646 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
648 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
651 if (rc_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
652 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
653 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
654 } else if (rc_flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
655 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
656 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
659 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
660 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
662 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
663 if (ieee80211_is_mgmt(fc
)) {
664 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
665 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
667 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
669 tx
->timeout
.pm_frame_timeout
= 0;
670 #ifdef CONFIG_IWLWIFI_LEDS
671 priv
->rxtxpackets
+= le16_to_cpu(cmd
->cmd
.tx
.len
);
676 tx
->tx_flags
= tx_flags
;
677 tx
->next_frame_len
= 0;
681 * start REPLY_TX command process
683 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
685 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
686 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
687 struct iwl3945_tx_cmd
*tx
;
688 struct iwl_tx_queue
*txq
= NULL
;
689 struct iwl_queue
*q
= NULL
;
690 struct iwl_cmd
*out_cmd
= NULL
;
691 dma_addr_t phys_addr
;
692 dma_addr_t txcmd_phys
;
693 int txq_id
= skb_get_queue_mapping(skb
);
694 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
701 u8 wait_write_ptr
= 0;
706 spin_lock_irqsave(&priv
->lock
, flags
);
707 if (iwl_is_rfkill(priv
)) {
708 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
712 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
713 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
717 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
720 fc
= hdr
->frame_control
;
722 #ifdef CONFIG_IWLWIFI_DEBUG
723 if (ieee80211_is_auth(fc
))
724 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
725 else if (ieee80211_is_assoc_req(fc
))
726 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
727 else if (ieee80211_is_reassoc_req(fc
))
728 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
731 /* drop all data frame if we are not associated */
732 if (ieee80211_is_data(fc
) &&
733 (!iwl_is_monitor_mode(priv
)) && /* packet injection */
734 (!iwl_is_associated(priv
) ||
735 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
736 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
740 spin_unlock_irqrestore(&priv
->lock
, flags
);
742 hdr_len
= ieee80211_hdrlen(fc
);
744 /* Find (or create) index into station table for destination station */
745 sta_id
= iwl_get_sta_id(priv
, hdr
);
746 if (sta_id
== IWL_INVALID_STATION
) {
747 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
752 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
754 if (ieee80211_is_data_qos(fc
)) {
755 qc
= ieee80211_get_qos_ctl(hdr
);
756 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
757 seq_number
= priv
->stations_39
[sta_id
].tid
[tid
].seq_number
&
759 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
761 cpu_to_le16(IEEE80211_SCTL_FRAG
));
765 /* Descriptor for chosen Tx queue */
766 txq
= &priv
->txq
[txq_id
];
769 spin_lock_irqsave(&priv
->lock
, flags
);
771 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
773 /* Set up driver data for this TFD */
774 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
775 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
777 /* Init first empty entry in queue's array of Tx/cmd buffers */
778 out_cmd
= txq
->cmd
[idx
];
779 tx
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
780 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
781 memset(tx
, 0, sizeof(*tx
));
784 * Set up the Tx-command (not MAC!) header.
785 * Store the chosen Tx queue and TFD index within the sequence field;
786 * after Tx, uCode's Tx response will return this value so driver can
787 * locate the frame within the tx queue and do post-tx processing.
789 out_cmd
->hdr
.cmd
= REPLY_TX
;
790 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
791 INDEX_TO_SEQ(q
->write_ptr
)));
793 /* Copy MAC header from skb into command buffer */
794 memcpy(tx
->hdr
, hdr
, hdr_len
);
797 if (info
->control
.hw_key
)
798 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
800 /* TODO need this for burst mode later on */
801 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
803 /* set is_hcca to 0; it probably will never be implemented */
804 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
806 /* Total # bytes to be transmitted */
808 tx
->len
= cpu_to_le16(len
);
811 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
812 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
814 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
815 txq
->need_update
= 1;
817 priv
->stations_39
[sta_id
].tid
[tid
].seq_number
= seq_number
;
820 txq
->need_update
= 0;
823 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
824 le16_to_cpu(out_cmd
->hdr
.sequence
));
825 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx
->tx_flags
));
826 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx
, sizeof(*tx
));
827 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx
->hdr
,
828 ieee80211_hdrlen(fc
));
831 * Use the first empty entry in this queue's command buffer array
832 * to contain the Tx command and MAC header concatenated together
833 * (payload data will be in another buffer).
834 * Size of this varies, due to varying MAC header length.
835 * If end is not dword aligned, we'll have 2 extra bytes at the end
836 * of the MAC header (device reads on dword boundaries).
837 * We'll tell device about this padding later.
839 len
= sizeof(struct iwl3945_tx_cmd
) +
840 sizeof(struct iwl_cmd_header
) + hdr_len
;
843 len
= (len
+ 3) & ~3;
850 /* Physical address of this Tx command's header (not MAC header!),
851 * within command buffer array. */
852 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
853 len
, PCI_DMA_TODEVICE
);
854 /* we do not map meta data ... so we can safely access address to
855 * provide to unmap command*/
856 pci_unmap_addr_set(&out_cmd
->meta
, mapping
, txcmd_phys
);
857 pci_unmap_len_set(&out_cmd
->meta
, len
, len
);
859 /* Add buffer containing Tx command and MAC(!) header to TFD's
861 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
862 txcmd_phys
, len
, 1, 0);
865 /* Set up TFD's 2nd entry to point directly to remainder of skb,
866 * if any (802.11 null frames have no payload). */
867 len
= skb
->len
- hdr_len
;
869 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
870 len
, PCI_DMA_TODEVICE
);
871 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
877 /* Tell device the write index *just past* this latest filled TFD */
878 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
879 rc
= iwl_txq_update_write_ptr(priv
, txq
);
880 spin_unlock_irqrestore(&priv
->lock
, flags
);
885 if ((iwl_queue_space(q
) < q
->high_mark
)
886 && priv
->mac80211_registered
) {
887 if (wait_write_ptr
) {
888 spin_lock_irqsave(&priv
->lock
, flags
);
889 txq
->need_update
= 1;
890 iwl_txq_update_write_ptr(priv
, txq
);
891 spin_unlock_irqrestore(&priv
->lock
, flags
);
894 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
900 spin_unlock_irqrestore(&priv
->lock
, flags
);
905 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
907 #include "iwl-spectrum.h"
909 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
910 #define BEACON_TIME_MASK_HIGH 0xFF000000
911 #define TIME_UNIT 1024
914 * extended beacon time format
915 * time in usec will be changed into a 32-bit value in 8:24 format
916 * the high 1 byte is the beacon counts
917 * the lower 3 bytes is the time in usec within one beacon interval
920 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
924 u32 interval
= beacon_interval
* 1024;
926 if (!interval
|| !usec
)
929 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
930 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
932 return (quot
<< 24) + rem
;
935 /* base is usually what we get from ucode with each received frame,
936 * the same as HW timer counter counting down
939 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
941 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
942 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
943 u32 interval
= beacon_interval
* TIME_UNIT
;
944 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
945 (addon
& BEACON_TIME_MASK_HIGH
);
947 if (base_low
> addon_low
)
948 res
+= base_low
- addon_low
;
949 else if (base_low
< addon_low
) {
950 res
+= interval
+ base_low
- addon_low
;
955 return cpu_to_le32(res
);
958 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
959 struct ieee80211_measurement_params
*params
,
962 struct iwl_spectrum_cmd spectrum
;
963 struct iwl_rx_packet
*res
;
964 struct iwl_host_cmd cmd
= {
965 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
966 .data
= (void *)&spectrum
,
967 .meta
.flags
= CMD_WANT_SKB
,
969 u32 add_time
= le64_to_cpu(params
->start_time
);
971 int spectrum_resp_status
;
972 int duration
= le16_to_cpu(params
->duration
);
974 if (iwl_is_associated(priv
))
976 iwl3945_usecs_to_beacons(
977 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
978 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
980 memset(&spectrum
, 0, sizeof(spectrum
));
982 spectrum
.channel_count
= cpu_to_le16(1);
984 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
985 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
986 cmd
.len
= sizeof(spectrum
);
987 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
989 if (iwl_is_associated(priv
))
990 spectrum
.start_time
=
991 iwl3945_add_beacon_time(priv
->last_beacon_time
,
993 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
995 spectrum
.start_time
= 0;
997 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
998 spectrum
.channels
[0].channel
= params
->channel
;
999 spectrum
.channels
[0].type
= type
;
1000 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
1001 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
1002 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
1004 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1008 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1009 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1010 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
1014 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
1015 switch (spectrum_resp_status
) {
1016 case 0: /* Command will be handled */
1017 if (res
->u
.spectrum
.id
!= 0xff) {
1018 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
1019 res
->u
.spectrum
.id
);
1020 priv
->measurement_status
&= ~MEASUREMENT_READY
;
1022 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
1026 case 1: /* Command will not be handled */
1031 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1037 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
1038 struct iwl_rx_mem_buffer
*rxb
)
1040 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1041 struct iwl_alive_resp
*palive
;
1042 struct delayed_work
*pwork
;
1044 palive
= &pkt
->u
.alive_frame
;
1046 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
1048 palive
->is_valid
, palive
->ver_type
,
1049 palive
->ver_subtype
);
1051 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
1052 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
1053 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
1054 sizeof(struct iwl_alive_resp
));
1055 pwork
= &priv
->init_alive_start
;
1057 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1058 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
1059 sizeof(struct iwl_alive_resp
));
1060 pwork
= &priv
->alive_start
;
1061 iwl3945_disable_events(priv
);
1064 /* We delay the ALIVE response by 5ms to
1065 * give the HW RF Kill time to activate... */
1066 if (palive
->is_valid
== UCODE_VALID_OK
)
1067 queue_delayed_work(priv
->workqueue
, pwork
,
1068 msecs_to_jiffies(5));
1070 IWL_WARN(priv
, "uCode did not respond OK.\n");
1073 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
1074 struct iwl_rx_mem_buffer
*rxb
)
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1077 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1080 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
1084 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
1086 struct iwl_priv
*priv
=
1087 container_of(work
, struct iwl_priv
, beacon_update
);
1088 struct sk_buff
*beacon
;
1090 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1091 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
1094 IWL_ERR(priv
, "update beacon failed\n");
1098 mutex_lock(&priv
->mutex
);
1099 /* new beacon skb is allocated every time; dispose previous.*/
1100 if (priv
->ibss_beacon
)
1101 dev_kfree_skb(priv
->ibss_beacon
);
1103 priv
->ibss_beacon
= beacon
;
1104 mutex_unlock(&priv
->mutex
);
1106 iwl3945_send_beacon_cmd(priv
);
1109 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
1110 struct iwl_rx_mem_buffer
*rxb
)
1112 #ifdef CONFIG_IWLWIFI_DEBUG
1113 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1114 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
1115 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
1117 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
1118 "tsf %d %d rate %d\n",
1119 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
1120 beacon
->beacon_notify_hdr
.failure_frame
,
1121 le32_to_cpu(beacon
->ibss_mgr_status
),
1122 le32_to_cpu(beacon
->high_tsf
),
1123 le32_to_cpu(beacon
->low_tsf
), rate
);
1126 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
1127 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
1128 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1131 /* Handle notification from uCode that card's power state is changing
1132 * due to software, hardware, or critical temperature RFKILL */
1133 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
1134 struct iwl_rx_mem_buffer
*rxb
)
1136 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1137 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
1138 unsigned long status
= priv
->status
;
1140 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
1141 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
1142 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
1144 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
1145 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1147 if (flags
& HW_CARD_DISABLED
)
1148 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1150 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1153 if (flags
& SW_CARD_DISABLED
)
1154 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1156 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1158 iwl_scan_cancel(priv
);
1160 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
1161 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
1162 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
1163 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
1164 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1166 wake_up_interruptible(&priv
->wait_command_queue
);
1170 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1172 * Setup the RX handlers for each of the reply types sent from the uCode
1175 * This function chains into the hardware specific files for them to setup
1176 * any hardware specific handlers as well.
1178 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
1180 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
1181 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
1182 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
1183 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
1184 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
1185 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
1186 iwl_rx_pm_debug_statistics_notif
;
1187 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
1190 * The same handler is used for both the REPLY to a discrete
1191 * statistics request from the host as well as for the periodic
1192 * statistics notifications (after received beacons) from the uCode.
1194 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
1195 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
1197 iwl_setup_spectrum_handlers(priv
);
1198 iwl_setup_rx_scan_handlers(priv
);
1199 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
1201 /* Set up hardware specific Rx handlers */
1202 iwl3945_hw_rx_handler_setup(priv
);
1205 /************************** RX-FUNCTIONS ****************************/
1207 * Rx theory of operation
1209 * The host allocates 32 DMA target addresses and passes the host address
1210 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1214 * The host/firmware share two index registers for managing the Rx buffers.
1216 * The READ index maps to the first position that the firmware may be writing
1217 * to -- the driver can read up to (but not including) this position and get
1219 * The READ index is managed by the firmware once the card is enabled.
1221 * The WRITE index maps to the last position the driver has read from -- the
1222 * position preceding WRITE is the last slot the firmware can place a packet.
1224 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1227 * During initialization, the host sets up the READ queue position to the first
1228 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1230 * When the firmware places a packet in a buffer, it will advance the READ index
1231 * and fire the RX interrupt. The driver can then query the READ index and
1232 * process as many packets as possible, moving the WRITE index forward as it
1233 * resets the Rx queue buffers with new memory.
1235 * The management in the driver is as follows:
1236 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1237 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1238 * to replenish the iwl->rxq->rx_free.
1239 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1240 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1241 * 'processed' and 'read' driver indexes as well)
1242 * + A received packet is processed and handed to the kernel network stack,
1243 * detached from the iwl->rxq. The driver 'processed' index is updated.
1244 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1245 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1246 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1247 * were enough free buffers and RX_STALLED is set it is cleared.
1252 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1253 * iwl3945_rx_queue_restock
1254 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1255 * queue, updates firmware pointers, and updates
1256 * the WRITE index. If insufficient rx_free buffers
1257 * are available, schedules iwl3945_rx_replenish
1259 * -- enable interrupts --
1260 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1261 * READ INDEX, detaching the SKB from the pool.
1262 * Moves the packet buffer from queue to rx_used.
1263 * Calls iwl3945_rx_queue_restock to refill any empty
1270 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1272 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1273 dma_addr_t dma_addr
)
1275 return cpu_to_le32((u32
)dma_addr
);
1279 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1281 * If there are slots in the RX queue that need to be restocked,
1282 * and we have free pre-allocated buffers, fill the ranks as much
1283 * as we can, pulling from rx_free.
1285 * This moves the 'write' index forward to catch up with 'processed', and
1286 * also updates the memory address in the firmware to reference the new
1289 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1291 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1292 struct list_head
*element
;
1293 struct iwl_rx_mem_buffer
*rxb
;
1294 unsigned long flags
;
1297 spin_lock_irqsave(&rxq
->lock
, flags
);
1298 write
= rxq
->write
& ~0x7;
1299 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1300 /* Get next free Rx buffer, remove from free list */
1301 element
= rxq
->rx_free
.next
;
1302 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1305 /* Point to Rx buffer via next RBD in circular buffer */
1306 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->real_dma_addr
);
1307 rxq
->queue
[rxq
->write
] = rxb
;
1308 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1311 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1312 /* If the pre-allocated buffer pool is dropping low, schedule to
1314 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1315 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1318 /* If we've added more space for the firmware to place data, tell it.
1319 * Increment device's write pointer in multiples of 8. */
1320 if ((write
!= (rxq
->write
& ~0x7))
1321 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1322 spin_lock_irqsave(&rxq
->lock
, flags
);
1323 rxq
->need_update
= 1;
1324 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1325 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1334 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1336 * When moving to rx_free an SKB is allocated for the slot.
1338 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1339 * This is called as a scheduled work item (except for during initialization)
1341 static void iwl3945_rx_allocate(struct iwl_priv
*priv
)
1343 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1344 struct list_head
*element
;
1345 struct iwl_rx_mem_buffer
*rxb
;
1346 unsigned long flags
;
1349 spin_lock_irqsave(&rxq
->lock
, flags
);
1351 if (list_empty(&rxq
->rx_used
)) {
1352 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1356 element
= rxq
->rx_used
.next
;
1357 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1359 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1361 /* Alloc a new receive buffer */
1363 alloc_skb(priv
->hw_params
.rx_buf_size
,
1366 if (net_ratelimit())
1367 IWL_CRIT(priv
, ": Can not allocate SKB buffers\n");
1368 /* We don't reschedule replenish work here -- we will
1369 * call the restock method and if it still needs
1370 * more buffers it will schedule replenish */
1374 /* If radiotap head is required, reserve some headroom here.
1375 * The physical head count is a variable rx_stats->phy_count.
1376 * We reserve 4 bytes here. Plus these extra bytes, the
1377 * headroom of the physical head should be enough for the
1378 * radiotap head that iwl3945 supported. See iwl3945_rt.
1380 skb_reserve(rxb
->skb
, 4);
1382 /* Get physical address of RB/SKB */
1383 rxb
->real_dma_addr
= pci_map_single(priv
->pci_dev
,
1385 priv
->hw_params
.rx_buf_size
,
1386 PCI_DMA_FROMDEVICE
);
1388 spin_lock_irqsave(&rxq
->lock
, flags
);
1389 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1390 priv
->alloc_rxb_skb
++;
1392 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1396 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1398 unsigned long flags
;
1400 spin_lock_irqsave(&rxq
->lock
, flags
);
1401 INIT_LIST_HEAD(&rxq
->rx_free
);
1402 INIT_LIST_HEAD(&rxq
->rx_used
);
1403 /* Fill the rx_used queue with _all_ of the Rx buffers */
1404 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1405 /* In the reset function, these buffers may have been allocated
1406 * to an SKB, so we need to unmap and free potential storage */
1407 if (rxq
->pool
[i
].skb
!= NULL
) {
1408 pci_unmap_single(priv
->pci_dev
,
1409 rxq
->pool
[i
].real_dma_addr
,
1410 priv
->hw_params
.rx_buf_size
,
1411 PCI_DMA_FROMDEVICE
);
1412 priv
->alloc_rxb_skb
--;
1413 dev_kfree_skb(rxq
->pool
[i
].skb
);
1414 rxq
->pool
[i
].skb
= NULL
;
1416 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1419 /* Set us so that we have processed and used all buffers, but have
1420 * not restocked the Rx queue with fresh buffers */
1421 rxq
->read
= rxq
->write
= 0;
1422 rxq
->free_count
= 0;
1423 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1426 void iwl3945_rx_replenish(void *data
)
1428 struct iwl_priv
*priv
= data
;
1429 unsigned long flags
;
1431 iwl3945_rx_allocate(priv
);
1433 spin_lock_irqsave(&priv
->lock
, flags
);
1434 iwl3945_rx_queue_restock(priv
);
1435 spin_unlock_irqrestore(&priv
->lock
, flags
);
1438 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1439 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1440 * This free routine walks the list of POOL entries and if SKB is set to
1441 * non NULL it is unmapped and freed
1443 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1446 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1447 if (rxq
->pool
[i
].skb
!= NULL
) {
1448 pci_unmap_single(priv
->pci_dev
,
1449 rxq
->pool
[i
].real_dma_addr
,
1450 priv
->hw_params
.rx_buf_size
,
1451 PCI_DMA_FROMDEVICE
);
1452 dev_kfree_skb(rxq
->pool
[i
].skb
);
1456 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1458 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1459 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1461 rxq
->rb_stts
= NULL
;
1465 /* Convert linear signal-to-noise ratio into dB */
1466 static u8 ratio2dB
[100] = {
1467 /* 0 1 2 3 4 5 6 7 8 9 */
1468 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1469 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1470 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1471 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1472 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1473 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1474 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1475 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1476 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1477 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1480 /* Calculates a relative dB value from a ratio of linear
1481 * (i.e. not dB) signal levels.
1482 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1483 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1485 /* 1000:1 or higher just report as 60 dB */
1486 if (sig_ratio
>= 1000)
1489 /* 100:1 or higher, divide by 10 and use table,
1490 * add 20 dB to make up for divide by 10 */
1491 if (sig_ratio
>= 100)
1492 return 20 + (int)ratio2dB
[sig_ratio
/10];
1494 /* We shouldn't see this */
1498 /* Use table for ratios 1:1 - 99:1 */
1499 return (int)ratio2dB
[sig_ratio
];
1502 #define PERFECT_RSSI (-20) /* dBm */
1503 #define WORST_RSSI (-95) /* dBm */
1504 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1506 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1507 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1508 * about formulas used below. */
1509 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1512 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1514 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1515 * as indicator; formula is (signal dbm - noise dbm).
1516 * SNR at or above 40 is a great signal (100%).
1517 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1518 * Weakest usable signal is usually 10 - 15 dB SNR. */
1520 if (rssi_dbm
- noise_dbm
>= 40)
1522 else if (rssi_dbm
< noise_dbm
)
1524 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1526 /* Else use just the signal level.
1527 * This formula is a least squares fit of data points collected and
1528 * compared with a reference system that had a percentage (%) display
1529 * for signal quality. */
1531 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1532 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1533 (RSSI_RANGE
* RSSI_RANGE
);
1537 else if (sig_qual
< 1)
1544 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1546 * Uses the priv->rx_handlers callback function array to invoke
1547 * the appropriate handlers, including command responses,
1548 * frame-received notifications, and other notifications.
1550 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1552 struct iwl_rx_mem_buffer
*rxb
;
1553 struct iwl_rx_packet
*pkt
;
1554 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1557 unsigned long flags
;
1561 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1562 * buffer that the driver may process (last buffer filled by ucode). */
1563 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1566 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
1568 /* Rx interrupt, but nothing sent from uCode */
1570 IWL_DEBUG(priv
, IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
1573 rxb
= rxq
->queue
[i
];
1575 /* If an RXB doesn't have a Rx queue slot associated with it,
1576 * then a bug has been introduced in the queue refilling
1577 * routines -- catch it here */
1578 BUG_ON(rxb
== NULL
);
1580 rxq
->queue
[i
] = NULL
;
1582 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1583 priv
->hw_params
.rx_buf_size
,
1584 PCI_DMA_FROMDEVICE
);
1585 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1587 /* Reclaim a command buffer only if this packet is a response
1588 * to a (driver-originated) command.
1589 * If the packet (e.g. Rx frame) originated from uCode,
1590 * there is no command buffer to reclaim.
1591 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1592 * but apparently a few don't get set; catch them here. */
1593 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1594 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1595 (pkt
->hdr
.cmd
!= REPLY_TX
);
1597 /* Based on type of command response or notification,
1598 * handle those that need handling via function in
1599 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1600 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1601 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1602 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1603 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1604 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1605 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1607 /* No handling needed */
1608 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1609 "r %d i %d No handler needed for %s, 0x%02x\n",
1610 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1615 /* Invoke any callbacks, transfer the skb to caller, and
1616 * fire off the (possibly) blocking iwl_send_cmd()
1617 * as we reclaim the driver command queue */
1618 if (rxb
&& rxb
->skb
)
1619 iwl_tx_cmd_complete(priv
, rxb
);
1621 IWL_WARN(priv
, "Claim null rxb?\n");
1624 /* For now we just don't re-use anything. We can tweak this
1625 * later to try and re-use notification packets and SKBs that
1626 * fail to Rx correctly */
1627 if (rxb
->skb
!= NULL
) {
1628 priv
->alloc_rxb_skb
--;
1629 dev_kfree_skb_any(rxb
->skb
);
1633 spin_lock_irqsave(&rxq
->lock
, flags
);
1634 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1635 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1636 i
= (i
+ 1) & RX_QUEUE_MASK
;
1637 /* If there are a lot of unused frames,
1638 * restock the Rx queue so ucode won't assert. */
1643 iwl3945_rx_queue_restock(priv
);
1649 /* Backtrack one entry */
1651 iwl3945_rx_queue_restock(priv
);
1654 /* call this function to flush any scheduled tasklet */
1655 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1657 /* wait to make sure we flush pending tasklet*/
1658 synchronize_irq(priv
->pci_dev
->irq
);
1659 tasklet_kill(&priv
->irq_tasklet
);
1662 static const char *desc_lookup(int i
)
1670 return "BAD_CHECKSUM";
1672 return "NMI_INTERRUPT";
1676 return "FATAL_ERROR";
1682 #define ERROR_START_OFFSET (1 * sizeof(u32))
1683 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1685 static void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1688 u32 desc
, time
, count
, base
, data1
;
1689 u32 blink1
, blink2
, ilink1
, ilink2
;
1692 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1694 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1695 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1699 rc
= iwl_grab_nic_access(priv
);
1701 IWL_WARN(priv
, "Can not read from adapter at this time.\n");
1705 count
= iwl_read_targ_mem(priv
, base
);
1707 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1708 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1709 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1710 priv
->status
, count
);
1713 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1714 "ilink1 nmiPC Line\n");
1715 for (i
= ERROR_START_OFFSET
;
1716 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1717 i
+= ERROR_ELEM_SIZE
) {
1718 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1720 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1722 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1724 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1726 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1728 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1730 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1733 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1734 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1735 ilink1
, ilink2
, data1
);
1738 iwl_release_nic_access(priv
);
1742 #define EVENT_START_OFFSET (6 * sizeof(u32))
1745 * iwl3945_print_event_log - Dump error event log to syslog
1747 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1749 static void iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1750 u32 num_events
, u32 mode
)
1753 u32 base
; /* SRAM byte address of event log header */
1754 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1755 u32 ptr
; /* SRAM byte address of log data */
1756 u32 ev
, time
, data
; /* event log data */
1758 if (num_events
== 0)
1761 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1764 event_size
= 2 * sizeof(u32
);
1766 event_size
= 3 * sizeof(u32
);
1768 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1770 /* "time" is actually "data" for mode 0 (no timestamp).
1771 * place event id # at far right for easier visual parsing. */
1772 for (i
= 0; i
< num_events
; i
++) {
1773 ev
= iwl_read_targ_mem(priv
, ptr
);
1775 time
= iwl_read_targ_mem(priv
, ptr
);
1779 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1781 data
= iwl_read_targ_mem(priv
, ptr
);
1783 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n", time
, data
, ev
);
1788 static void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1791 u32 base
; /* SRAM byte address of event log header */
1792 u32 capacity
; /* event log capacity in # entries */
1793 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1794 u32 num_wraps
; /* # times uCode wrapped to top of log */
1795 u32 next_entry
; /* index of next entry to be written by uCode */
1796 u32 size
; /* # entries that we'll print */
1798 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1799 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1800 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1804 rc
= iwl_grab_nic_access(priv
);
1806 IWL_WARN(priv
, "Can not read from adapter at this time.\n");
1810 /* event log header */
1811 capacity
= iwl_read_targ_mem(priv
, base
);
1812 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1813 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1814 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1816 size
= num_wraps
? capacity
: next_entry
;
1818 /* bail out if nothing in log */
1820 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1821 iwl_release_nic_access(priv
);
1825 IWL_ERR(priv
, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1828 /* if uCode has wrapped back to top of log, start at the oldest entry,
1829 * i.e the next one that uCode would fill. */
1831 iwl3945_print_event_log(priv
, next_entry
,
1832 capacity
- next_entry
, mode
);
1834 /* (then/else) start at top of log */
1835 iwl3945_print_event_log(priv
, 0, next_entry
, mode
);
1837 iwl_release_nic_access(priv
);
1840 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1842 u32 inta
, handled
= 0;
1844 unsigned long flags
;
1845 #ifdef CONFIG_IWLWIFI_DEBUG
1849 spin_lock_irqsave(&priv
->lock
, flags
);
1851 /* Ack/clear/reset pending uCode interrupts.
1852 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1853 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1854 inta
= iwl_read32(priv
, CSR_INT
);
1855 iwl_write32(priv
, CSR_INT
, inta
);
1857 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1858 * Any new interrupts that happen after this, either while we're
1859 * in this tasklet, or later, will show up in next ISR/tasklet. */
1860 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1861 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1863 #ifdef CONFIG_IWLWIFI_DEBUG
1864 if (priv
->debug_level
& IWL_DL_ISR
) {
1865 /* just for debug */
1866 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1867 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1868 inta
, inta_mask
, inta_fh
);
1872 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1873 * atomic, make sure that inta covers all the interrupts that
1874 * we've discovered, even if FH interrupt came in just after
1875 * reading CSR_INT. */
1876 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1877 inta
|= CSR_INT_BIT_FH_RX
;
1878 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1879 inta
|= CSR_INT_BIT_FH_TX
;
1881 /* Now service all interrupt bits discovered above. */
1882 if (inta
& CSR_INT_BIT_HW_ERR
) {
1883 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1885 /* Tell the device to stop sending interrupts */
1886 iwl_disable_interrupts(priv
);
1888 priv
->isr_stats
.hw
++;
1889 iwl_irq_handle_error(priv
);
1891 handled
|= CSR_INT_BIT_HW_ERR
;
1893 spin_unlock_irqrestore(&priv
->lock
, flags
);
1898 #ifdef CONFIG_IWLWIFI_DEBUG
1899 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1900 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1901 if (inta
& CSR_INT_BIT_SCD
) {
1902 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1903 "the frame/frames.\n");
1904 priv
->isr_stats
.sch
++;
1907 /* Alive notification via Rx interrupt will do the real work */
1908 if (inta
& CSR_INT_BIT_ALIVE
) {
1909 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1910 priv
->isr_stats
.alive
++;
1914 /* Safely ignore these bits for debug checks below */
1915 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1917 /* Error detected by uCode */
1918 if (inta
& CSR_INT_BIT_SW_ERR
) {
1919 IWL_ERR(priv
, "Microcode SW error detected. "
1920 "Restarting 0x%X.\n", inta
);
1921 priv
->isr_stats
.sw
++;
1922 priv
->isr_stats
.sw_err
= inta
;
1923 iwl_irq_handle_error(priv
);
1924 handled
|= CSR_INT_BIT_SW_ERR
;
1927 /* uCode wakes up after power-down sleep */
1928 if (inta
& CSR_INT_BIT_WAKEUP
) {
1929 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1930 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1931 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1932 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1933 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1934 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1935 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1936 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1938 priv
->isr_stats
.wakeup
++;
1939 handled
|= CSR_INT_BIT_WAKEUP
;
1942 /* All uCode command responses, including Tx command responses,
1943 * Rx "responses" (frame-received notification), and other
1944 * notifications from uCode come through here*/
1945 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1946 iwl3945_rx_handle(priv
);
1947 priv
->isr_stats
.rx
++;
1948 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1951 if (inta
& CSR_INT_BIT_FH_TX
) {
1952 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1953 priv
->isr_stats
.tx
++;
1955 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1956 if (!iwl_grab_nic_access(priv
)) {
1957 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1958 (FH39_SRVC_CHNL
), 0x0);
1959 iwl_release_nic_access(priv
);
1961 handled
|= CSR_INT_BIT_FH_TX
;
1964 if (inta
& ~handled
) {
1965 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1966 priv
->isr_stats
.unhandled
++;
1969 if (inta
& ~CSR_INI_SET_MASK
) {
1970 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1971 inta
& ~CSR_INI_SET_MASK
);
1972 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1975 /* Re-enable all interrupts */
1976 /* only Re-enable if disabled by irq */
1977 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1978 iwl_enable_interrupts(priv
);
1980 #ifdef CONFIG_IWLWIFI_DEBUG
1981 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1982 inta
= iwl_read32(priv
, CSR_INT
);
1983 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1984 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1985 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1986 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1989 spin_unlock_irqrestore(&priv
->lock
, flags
);
1992 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1993 enum ieee80211_band band
,
1994 u8 is_active
, u8 n_probes
,
1995 struct iwl3945_scan_channel
*scan_ch
)
1997 const struct ieee80211_channel
*channels
= NULL
;
1998 const struct ieee80211_supported_band
*sband
;
1999 const struct iwl_channel_info
*ch_info
;
2000 u16 passive_dwell
= 0;
2001 u16 active_dwell
= 0;
2004 sband
= iwl_get_hw_mode(priv
, band
);
2008 channels
= sband
->channels
;
2010 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
2011 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
2013 if (passive_dwell
<= active_dwell
)
2014 passive_dwell
= active_dwell
+ 1;
2016 for (i
= 0, added
= 0; i
< sband
->n_channels
; i
++) {
2017 if (channels
[i
].flags
& IEEE80211_CHAN_DISABLED
)
2020 scan_ch
->channel
= channels
[i
].hw_value
;
2022 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
2023 if (!is_channel_valid(ch_info
)) {
2024 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
2029 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
2030 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
2031 /* If passive , set up for auto-switch
2032 * and use long active_dwell time.
2034 if (!is_active
|| is_channel_passive(ch_info
) ||
2035 (channels
[i
].flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
2036 scan_ch
->type
= 0; /* passive */
2037 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
2038 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
2040 scan_ch
->type
= 1; /* active */
2043 /* Set direct probe bits. These may be used both for active
2044 * scan channels (probes gets sent right away),
2045 * or for passive channels (probes get se sent only after
2046 * hearing clear Rx packet).*/
2047 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
2049 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
2051 /* uCode v1 does not allow setting direct probe bits on
2052 * passive channel. */
2053 if ((scan_ch
->type
& 1) && n_probes
)
2054 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
2057 /* Set txpower levels to defaults */
2058 scan_ch
->tpc
.dsp_atten
= 110;
2059 /* scan_pwr_info->tpc.dsp_atten; */
2061 /*scan_pwr_info->tpc.tx_gain; */
2062 if (band
== IEEE80211_BAND_5GHZ
)
2063 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
2065 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
2066 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2068 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2072 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
2074 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
2075 (scan_ch
->type
& 1) ?
2076 active_dwell
: passive_dwell
);
2082 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
2086 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
2087 struct ieee80211_rate
*rates
)
2091 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
2092 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
2093 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
2094 rates
[i
].hw_value_short
= i
;
2096 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
2098 * If CCK != 1M then set short preamble rate flag.
2100 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
2101 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
2106 /******************************************************************************
2108 * uCode download functions
2110 ******************************************************************************/
2112 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
2114 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2115 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2116 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2117 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2118 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2119 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2123 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2124 * looking at all data.
2126 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2133 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2135 rc
= iwl_grab_nic_access(priv
);
2139 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2140 IWL39_RTC_INST_LOWER_BOUND
);
2143 for (; len
> 0; len
-= sizeof(u32
), image
++) {
2144 /* read data comes through single port, auto-incr addr */
2145 /* NOTE: Use the debugless read so we don't flood kernel log
2146 * if IWL_DL_IO is set */
2147 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2148 if (val
!= le32_to_cpu(*image
)) {
2149 IWL_ERR(priv
, "uCode INST section is invalid at "
2150 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2151 save_len
- len
, val
, le32_to_cpu(*image
));
2159 iwl_release_nic_access(priv
);
2162 IWL_DEBUG_INFO(priv
,
2163 "ucode image in INSTRUCTION memory is good\n");
2170 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2171 * using sample data 100 bytes apart. If these sample points are good,
2172 * it's a pretty good bet that everything between them is good, too.
2174 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2181 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2183 rc
= iwl_grab_nic_access(priv
);
2187 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2188 /* read data comes through single port, auto-incr addr */
2189 /* NOTE: Use the debugless read so we don't flood kernel log
2190 * if IWL_DL_IO is set */
2191 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2192 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2193 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2194 if (val
!= le32_to_cpu(*image
)) {
2195 #if 0 /* Enable this if you want to see details */
2196 IWL_ERR(priv
, "uCode INST section is invalid at "
2197 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2207 iwl_release_nic_access(priv
);
2214 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2215 * and verify its contents
2217 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2224 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2225 len
= priv
->ucode_boot
.len
;
2226 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2228 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2232 /* Try initialize */
2233 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2234 len
= priv
->ucode_init
.len
;
2235 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2237 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2241 /* Try runtime/protocol */
2242 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2243 len
= priv
->ucode_code
.len
;
2244 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2246 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2250 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2252 /* Since nothing seems to match, show first several data entries in
2253 * instruction SRAM, so maybe visual inspection will give a clue.
2254 * Selection of bootstrap image (vs. other images) is arbitrary. */
2255 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2256 len
= priv
->ucode_boot
.len
;
2257 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2262 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2264 /* Remove all resets to allow NIC to operate */
2265 iwl_write32(priv
, CSR_RESET
, 0);
2269 * iwl3945_read_ucode - Read uCode images from disk file.
2271 * Copy into buffers for card to fetch via bus-mastering
2273 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2275 struct iwl_ucode
*ucode
;
2276 int ret
= -EINVAL
, index
;
2277 const struct firmware
*ucode_raw
;
2278 /* firmware file name contains uCode/driver compatibility version */
2279 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2280 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2281 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2285 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2287 /* Ask kernel firmware_class module to get the boot firmware off disk.
2288 * request_firmware() is synchronous, file is in memory on return. */
2289 for (index
= api_max
; index
>= api_min
; index
--) {
2290 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2291 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2293 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2300 if (index
< api_max
)
2301 IWL_ERR(priv
, "Loaded firmware %s, "
2302 "which is deprecated. "
2303 " Please use API v%u instead.\n",
2305 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2306 "(%zd bytes) from disk\n",
2307 buf
, ucode_raw
->size
);
2315 /* Make sure that we got at least our header! */
2316 if (ucode_raw
->size
< sizeof(*ucode
)) {
2317 IWL_ERR(priv
, "File size way too small!\n");
2322 /* Data from ucode file: header followed by uCode images */
2323 ucode
= (void *)ucode_raw
->data
;
2325 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2326 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2327 inst_size
= le32_to_cpu(ucode
->inst_size
);
2328 data_size
= le32_to_cpu(ucode
->data_size
);
2329 init_size
= le32_to_cpu(ucode
->init_size
);
2330 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
2331 boot_size
= le32_to_cpu(ucode
->boot_size
);
2333 /* api_ver should match the api version forming part of the
2334 * firmware filename ... but we don't check for that and only rely
2335 * on the API version read from firmware header from here on forward */
2337 if (api_ver
< api_min
|| api_ver
> api_max
) {
2338 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2339 "Driver supports v%u, firmware is v%u.\n",
2341 priv
->ucode_ver
= 0;
2345 if (api_ver
!= api_max
)
2346 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2347 "got %u. New firmware can be obtained "
2348 "from http://www.intellinuxwireless.org.\n",
2351 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2352 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2353 IWL_UCODE_MINOR(priv
->ucode_ver
),
2354 IWL_UCODE_API(priv
->ucode_ver
),
2355 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2357 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2359 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2361 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2363 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2365 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2367 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2371 /* Verify size of file vs. image size info in file's header */
2372 if (ucode_raw
->size
< sizeof(*ucode
) +
2373 inst_size
+ data_size
+ init_size
+
2374 init_data_size
+ boot_size
) {
2376 IWL_DEBUG_INFO(priv
, "uCode file size %zd too small\n",
2382 /* Verify that uCode images will fit in card's SRAM */
2383 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2384 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2390 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2391 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2396 if (init_size
> IWL39_MAX_INST_SIZE
) {
2397 IWL_DEBUG_INFO(priv
,
2398 "uCode init instr len %d too large to fit in\n",
2403 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2404 IWL_DEBUG_INFO(priv
,
2405 "uCode init data len %d too large to fit in\n",
2410 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2411 IWL_DEBUG_INFO(priv
,
2412 "uCode boot instr len %d too large to fit in\n",
2418 /* Allocate ucode buffers for card's bus-master loading ... */
2420 /* Runtime instructions and 2 copies of data:
2421 * 1) unmodified from disk
2422 * 2) backup cache for save/restore during power-downs */
2423 priv
->ucode_code
.len
= inst_size
;
2424 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2426 priv
->ucode_data
.len
= data_size
;
2427 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2429 priv
->ucode_data_backup
.len
= data_size
;
2430 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2432 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2433 !priv
->ucode_data_backup
.v_addr
)
2436 /* Initialization instructions and data */
2437 if (init_size
&& init_data_size
) {
2438 priv
->ucode_init
.len
= init_size
;
2439 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2441 priv
->ucode_init_data
.len
= init_data_size
;
2442 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2444 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2448 /* Bootstrap (instructions only, no data) */
2450 priv
->ucode_boot
.len
= boot_size
;
2451 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2453 if (!priv
->ucode_boot
.v_addr
)
2457 /* Copy images into buffers for card's bus-master reads ... */
2459 /* Runtime instructions (first block of data in file) */
2460 src
= &ucode
->data
[0];
2461 len
= priv
->ucode_code
.len
;
2462 IWL_DEBUG_INFO(priv
,
2463 "Copying (but not loading) uCode instr len %zd\n", len
);
2464 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2465 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2466 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2468 /* Runtime data (2nd block)
2469 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2470 src
= &ucode
->data
[inst_size
];
2471 len
= priv
->ucode_data
.len
;
2472 IWL_DEBUG_INFO(priv
,
2473 "Copying (but not loading) uCode data len %zd\n", len
);
2474 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2475 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2477 /* Initialization instructions (3rd block) */
2479 src
= &ucode
->data
[inst_size
+ data_size
];
2480 len
= priv
->ucode_init
.len
;
2481 IWL_DEBUG_INFO(priv
,
2482 "Copying (but not loading) init instr len %zd\n", len
);
2483 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2486 /* Initialization data (4th block) */
2487 if (init_data_size
) {
2488 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
2489 len
= priv
->ucode_init_data
.len
;
2490 IWL_DEBUG_INFO(priv
,
2491 "Copying (but not loading) init data len %zd\n", len
);
2492 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2495 /* Bootstrap instructions (5th block) */
2496 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
2497 len
= priv
->ucode_boot
.len
;
2498 IWL_DEBUG_INFO(priv
,
2499 "Copying (but not loading) boot instr len %zd\n", len
);
2500 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2502 /* We have our copies now, allow OS release its copies */
2503 release_firmware(ucode_raw
);
2507 IWL_ERR(priv
, "failed to allocate pci memory\n");
2509 iwl3945_dealloc_ucode_pci(priv
);
2512 release_firmware(ucode_raw
);
2520 * iwl3945_set_ucode_ptrs - Set uCode address location
2522 * Tell initialization uCode where to find runtime uCode.
2524 * BSM registers initially contain pointers to initialization uCode.
2525 * We need to replace them to load runtime uCode inst and data,
2526 * and to save runtime data when powering down.
2528 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2533 unsigned long flags
;
2535 /* bits 31:0 for 3945 */
2536 pinst
= priv
->ucode_code
.p_addr
;
2537 pdata
= priv
->ucode_data_backup
.p_addr
;
2539 spin_lock_irqsave(&priv
->lock
, flags
);
2540 rc
= iwl_grab_nic_access(priv
);
2542 spin_unlock_irqrestore(&priv
->lock
, flags
);
2546 /* Tell bootstrap uCode where to find image to load */
2547 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2548 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2549 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2550 priv
->ucode_data
.len
);
2552 /* Inst byte count must be last to set up, bit 31 signals uCode
2553 * that all new ptr/size info is in place */
2554 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2555 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2557 iwl_release_nic_access(priv
);
2559 spin_unlock_irqrestore(&priv
->lock
, flags
);
2561 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2567 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2569 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2571 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2573 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2575 /* Check alive response for "valid" sign from uCode */
2576 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2577 /* We had an error bringing up the hardware, so take it
2578 * all the way back down so we can try again */
2579 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2583 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2584 * This is a paranoid check, because we would not have gotten the
2585 * "initialize" alive if code weren't properly loaded. */
2586 if (iwl3945_verify_ucode(priv
)) {
2587 /* Runtime instruction load was bad;
2588 * take it all the way back down so we can try again */
2589 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2593 /* Send pointers to protocol/runtime uCode image ... init code will
2594 * load and launch runtime uCode, which will send us another "Alive"
2596 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2597 if (iwl3945_set_ucode_ptrs(priv
)) {
2598 /* Runtime instruction load won't happen;
2599 * take it all the way back down so we can try again */
2600 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2606 queue_work(priv
->workqueue
, &priv
->restart
);
2610 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2611 * from protocol/runtime uCode (initialization uCode's
2612 * Alive gets handled by iwl3945_init_alive_start()).
2614 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2617 int thermal_spin
= 0;
2620 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2622 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2623 /* We had an error bringing up the hardware, so take it
2624 * all the way back down so we can try again */
2625 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2629 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2630 * This is a paranoid check, because we would not have gotten the
2631 * "runtime" alive if code weren't properly loaded. */
2632 if (iwl3945_verify_ucode(priv
)) {
2633 /* Runtime instruction load was bad;
2634 * take it all the way back down so we can try again */
2635 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2639 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2641 rc
= iwl_grab_nic_access(priv
);
2643 IWL_WARN(priv
, "Can not read RFKILL status from adapter\n");
2647 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2648 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2649 iwl_release_nic_access(priv
);
2652 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2653 /* if RFKILL is not on, then wait for thermal
2654 * sensor in adapter to kick in */
2655 while (iwl3945_hw_get_temperature(priv
) == 0) {
2661 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2664 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2666 /* After the ALIVE response, we can send commands to 3945 uCode */
2667 set_bit(STATUS_ALIVE
, &priv
->status
);
2669 if (iwl_is_rfkill(priv
))
2672 ieee80211_wake_queues(priv
->hw
);
2674 priv
->active_rate
= priv
->rates_mask
;
2675 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2677 iwl_power_update_mode(priv
, false);
2679 if (iwl_is_associated(priv
)) {
2680 struct iwl3945_rxon_cmd
*active_rxon
=
2681 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2683 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
2684 sizeof(priv
->staging_rxon
));
2685 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2687 /* Initialize our rx_config data */
2688 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2691 /* Configure Bluetooth device coexistence support */
2692 iwl_send_bt_config(priv
);
2694 /* Configure the adapter for unassociated operation */
2695 iwlcore_commit_rxon(priv
);
2697 iwl3945_reg_txpower_periodic(priv
);
2699 iwl3945_led_register(priv
);
2701 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2702 set_bit(STATUS_READY
, &priv
->status
);
2703 wake_up_interruptible(&priv
->wait_command_queue
);
2705 /* reassociate for ADHOC mode */
2706 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2707 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2710 iwl_mac_beacon_update(priv
->hw
, beacon
);
2713 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2714 iwl_set_mode(priv
, priv
->iw_mode
);
2719 queue_work(priv
->workqueue
, &priv
->restart
);
2722 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2724 static void __iwl3945_down(struct iwl_priv
*priv
)
2726 unsigned long flags
;
2727 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2728 struct ieee80211_conf
*conf
= NULL
;
2730 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2732 conf
= ieee80211_get_hw_conf(priv
->hw
);
2735 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2737 iwl3945_led_unregister(priv
);
2738 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2740 /* Unblock any waiting calls */
2741 wake_up_interruptible_all(&priv
->wait_command_queue
);
2743 /* Wipe out the EXIT_PENDING status bit if we are not actually
2744 * exiting the module */
2746 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2748 /* stop and reset the on-board processor */
2749 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2751 /* tell the device to stop sending interrupts */
2752 spin_lock_irqsave(&priv
->lock
, flags
);
2753 iwl_disable_interrupts(priv
);
2754 spin_unlock_irqrestore(&priv
->lock
, flags
);
2755 iwl_synchronize_irq(priv
);
2757 if (priv
->mac80211_registered
)
2758 ieee80211_stop_queues(priv
->hw
);
2760 /* If we have not previously called iwl3945_init() then
2761 * clear all bits but the RF Kill bits and return */
2762 if (!iwl_is_init(priv
)) {
2763 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2765 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
2767 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2768 STATUS_GEO_CONFIGURED
|
2769 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2770 STATUS_EXIT_PENDING
;
2774 /* ...otherwise clear out all the status bits but the RF Kill
2775 * bits and continue taking the NIC down. */
2776 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2778 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
2780 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2781 STATUS_GEO_CONFIGURED
|
2782 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2784 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2785 STATUS_EXIT_PENDING
;
2787 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2788 spin_lock_irqsave(&priv
->lock
, flags
);
2789 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2790 spin_unlock_irqrestore(&priv
->lock
, flags
);
2792 iwl3945_hw_txq_ctx_stop(priv
);
2793 iwl3945_hw_rxq_stop(priv
);
2795 spin_lock_irqsave(&priv
->lock
, flags
);
2796 if (!iwl_grab_nic_access(priv
)) {
2797 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
2798 APMG_CLK_VAL_DMA_CLK_RQT
);
2799 iwl_release_nic_access(priv
);
2801 spin_unlock_irqrestore(&priv
->lock
, flags
);
2806 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2808 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2811 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2813 if (priv
->ibss_beacon
)
2814 dev_kfree_skb(priv
->ibss_beacon
);
2815 priv
->ibss_beacon
= NULL
;
2817 /* clear out any free frames */
2818 iwl3945_clear_free_frames(priv
);
2821 static void iwl3945_down(struct iwl_priv
*priv
)
2823 mutex_lock(&priv
->mutex
);
2824 __iwl3945_down(priv
);
2825 mutex_unlock(&priv
->mutex
);
2827 iwl3945_cancel_deferred_work(priv
);
2830 #define MAX_HW_RESTARTS 5
2832 static int __iwl3945_up(struct iwl_priv
*priv
)
2836 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2837 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2841 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
2842 IWL_WARN(priv
, "Radio disabled by SW RF kill (module "
2847 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2848 IWL_ERR(priv
, "ucode not available for device bring up\n");
2852 /* If platform's RF_KILL switch is NOT set to KILL */
2853 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2854 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2855 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2857 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2858 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2862 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2864 rc
= iwl3945_hw_nic_init(priv
);
2866 IWL_ERR(priv
, "Unable to int nic\n");
2870 /* make sure rfkill handshake bits are cleared */
2871 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2872 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2873 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2875 /* clear (again), then enable host interrupts */
2876 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2877 iwl_enable_interrupts(priv
);
2879 /* really make sure rfkill handshake bits are cleared */
2880 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2881 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2883 /* Copy original ucode data image from disk into backup cache.
2884 * This will be used to initialize the on-board processor's
2885 * data SRAM for a clean start when the runtime program first loads. */
2886 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2887 priv
->ucode_data
.len
);
2889 /* We return success when we resume from suspend and rf_kill is on. */
2890 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2893 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2895 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2897 /* load bootstrap state machine,
2898 * load bootstrap program into processor's memory,
2899 * prepare to load the "initialize" uCode */
2900 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2904 "Unable to set up bootstrap uCode: %d\n", rc
);
2908 /* start card; "initialize" will load runtime ucode */
2909 iwl3945_nic_start(priv
);
2911 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2916 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2917 __iwl3945_down(priv
);
2918 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2920 /* tried to restart and config the device for as long as our
2921 * patience could withstand */
2922 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2927 /*****************************************************************************
2929 * Workqueue callbacks
2931 *****************************************************************************/
2933 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2935 struct iwl_priv
*priv
=
2936 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2938 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2941 mutex_lock(&priv
->mutex
);
2942 iwl3945_init_alive_start(priv
);
2943 mutex_unlock(&priv
->mutex
);
2946 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2948 struct iwl_priv
*priv
=
2949 container_of(data
, struct iwl_priv
, alive_start
.work
);
2951 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2954 mutex_lock(&priv
->mutex
);
2955 iwl3945_alive_start(priv
);
2956 mutex_unlock(&priv
->mutex
);
2959 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2961 struct iwl_priv
*priv
=
2962 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2963 unsigned long status
= priv
->status
;
2965 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2966 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2968 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2970 if (test_bit(STATUS_RF_KILL_HW
, &status
) != test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2971 queue_work(priv
->workqueue
, &priv
->rf_kill
);
2973 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2974 round_jiffies_relative(2 * HZ
));
2978 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2979 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2981 struct iwl_priv
*priv
=
2982 container_of(data
, struct iwl_priv
, request_scan
);
2983 struct iwl_host_cmd cmd
= {
2984 .id
= REPLY_SCAN_CMD
,
2985 .len
= sizeof(struct iwl3945_scan_cmd
),
2986 .meta
.flags
= CMD_SIZE_HUGE
,
2989 struct iwl3945_scan_cmd
*scan
;
2990 struct ieee80211_conf
*conf
= NULL
;
2992 enum ieee80211_band band
;
2993 bool is_active
= false;
2995 conf
= ieee80211_get_hw_conf(priv
->hw
);
2997 mutex_lock(&priv
->mutex
);
2999 if (!iwl_is_ready(priv
)) {
3000 IWL_WARN(priv
, "request scan called when driver not ready.\n");
3004 /* Make sure the scan wasn't canceled before this queued work
3005 * was given the chance to run... */
3006 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
3009 /* This should never be called or scheduled if there is currently
3010 * a scan active in the hardware. */
3011 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
3012 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
3013 "Ignoring second request.\n");
3018 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
3019 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
3023 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3025 "Scan request while abort pending. Queuing.\n");
3029 if (iwl_is_rfkill(priv
)) {
3030 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
3034 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3036 "Scan request while uninitialized. Queuing.\n");
3040 if (!priv
->scan_bands
) {
3041 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
3046 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
3047 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
3054 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
3056 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
3057 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
3059 if (iwl_is_associated(priv
)) {
3062 u32 suspend_time
= 100;
3063 u32 scan_suspend_time
= 100;
3064 unsigned long flags
;
3066 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
3068 spin_lock_irqsave(&priv
->lock
, flags
);
3069 interval
= priv
->beacon_int
;
3070 spin_unlock_irqrestore(&priv
->lock
, flags
);
3072 scan
->suspend_time
= 0;
3073 scan
->max_out_time
= cpu_to_le32(200 * 1024);
3075 interval
= suspend_time
;
3077 * suspend time format:
3078 * 0-19: beacon interval in usec (time before exec.)
3080 * 24-31: number of beacons (suspend between channels)
3083 extra
= (suspend_time
/ interval
) << 24;
3084 scan_suspend_time
= 0xFF0FFFFF &
3085 (extra
| ((suspend_time
% interval
) * 1024));
3087 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
3088 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
3089 scan_suspend_time
, interval
);
3092 if (priv
->scan_request
->n_ssids
) {
3094 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
3095 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
3096 /* always does wildcard anyway */
3097 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
3099 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
3100 scan
->direct_scan
[p
].len
=
3101 priv
->scan_request
->ssids
[i
].ssid_len
;
3102 memcpy(scan
->direct_scan
[p
].ssid
,
3103 priv
->scan_request
->ssids
[i
].ssid
,
3104 priv
->scan_request
->ssids
[i
].ssid_len
);
3110 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
3112 /* We don't build a direct scan probe request; the uCode will do
3113 * that based on the direct_mask added to each channel entry */
3114 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
3115 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
3116 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
3118 /* flags + rate selection */
3120 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
3121 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
3122 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
3123 scan
->good_CRC_th
= 0;
3124 band
= IEEE80211_BAND_2GHZ
;
3125 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
3126 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
3128 * If active scaning is requested but a certain channel
3129 * is marked passive, we can do active scanning if we
3130 * detect transmissions.
3132 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
3133 band
= IEEE80211_BAND_5GHZ
;
3135 IWL_WARN(priv
, "Invalid scan band count\n");
3139 scan
->tx_cmd
.len
= cpu_to_le16(
3140 iwl_fill_probe_req(priv
,
3141 (struct ieee80211_mgmt
*)scan
->data
,
3142 priv
->scan_request
->ie
,
3143 priv
->scan_request
->ie_len
,
3144 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
3146 /* select Rx antennas */
3147 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
3149 if (iwl_is_monitor_mode(priv
))
3150 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
3152 scan
->channel_count
=
3153 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
3154 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
3156 if (scan
->channel_count
== 0) {
3157 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
3161 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
3162 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
3164 scan
->len
= cpu_to_le16(cmd
.len
);
3166 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3167 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3171 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
3172 IWL_SCAN_CHECK_WATCHDOG
);
3174 mutex_unlock(&priv
->mutex
);
3178 /* can not perform scan make sure we clear scanning
3179 * bits from status so next scan request can be performed.
3180 * if we dont clear scanning status bit here all next scan
3183 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3184 clear_bit(STATUS_SCANNING
, &priv
->status
);
3186 /* inform mac80211 scan aborted */
3187 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3188 mutex_unlock(&priv
->mutex
);
3191 static void iwl3945_bg_up(struct work_struct
*data
)
3193 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
3195 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3198 mutex_lock(&priv
->mutex
);
3200 mutex_unlock(&priv
->mutex
);
3201 iwl_rfkill_set_hw_state(priv
);
3204 static void iwl3945_bg_restart(struct work_struct
*data
)
3206 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3208 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3211 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3212 mutex_lock(&priv
->mutex
);
3215 mutex_unlock(&priv
->mutex
);
3217 ieee80211_restart_hw(priv
->hw
);
3220 queue_work(priv
->workqueue
, &priv
->up
);
3224 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3226 struct iwl_priv
*priv
=
3227 container_of(data
, struct iwl_priv
, rx_replenish
);
3229 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3232 mutex_lock(&priv
->mutex
);
3233 iwl3945_rx_replenish(priv
);
3234 mutex_unlock(&priv
->mutex
);
3237 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3239 void iwl3945_post_associate(struct iwl_priv
*priv
)
3242 struct ieee80211_conf
*conf
= NULL
;
3244 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3245 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3250 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3251 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3253 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3256 if (!priv
->vif
|| !priv
->is_open
)
3259 iwl_scan_cancel_timeout(priv
, 200);
3261 conf
= ieee80211_get_hw_conf(priv
->hw
);
3263 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3264 iwlcore_commit_rxon(priv
);
3266 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3267 iwl3945_setup_rxon_timing(priv
);
3268 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3269 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3271 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3272 "Attempting to continue.\n");
3274 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3276 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3278 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3279 priv
->assoc_id
, priv
->beacon_int
);
3281 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3282 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3284 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3286 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3287 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3288 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3290 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3292 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3293 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3297 iwlcore_commit_rxon(priv
);
3299 switch (priv
->iw_mode
) {
3300 case NL80211_IFTYPE_STATION
:
3301 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3304 case NL80211_IFTYPE_ADHOC
:
3307 priv
->cfg
->ops
->smgmt
->add_station(priv
, priv
->bssid
, 0, 0, NULL
);
3308 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3309 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3310 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3312 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3313 iwl3945_send_beacon_cmd(priv
);
3318 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3319 __func__
, priv
->iw_mode
);
3323 iwl_activate_qos(priv
, 0);
3325 /* we have just associated, don't start scan too early */
3326 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3329 /*****************************************************************************
3331 * mac80211 entry point functions
3333 *****************************************************************************/
3335 #define UCODE_READY_TIMEOUT (2 * HZ)
3337 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3339 struct iwl_priv
*priv
= hw
->priv
;
3342 IWL_DEBUG_MAC80211(priv
, "enter\n");
3344 /* we should be verifying the device is ready to be opened */
3345 mutex_lock(&priv
->mutex
);
3347 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
3348 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3349 * ucode filename and max sizes are card-specific. */
3351 if (!priv
->ucode_code
.len
) {
3352 ret
= iwl3945_read_ucode(priv
);
3354 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3355 mutex_unlock(&priv
->mutex
);
3356 goto out_release_irq
;
3360 ret
= __iwl3945_up(priv
);
3362 mutex_unlock(&priv
->mutex
);
3364 iwl_rfkill_set_hw_state(priv
);
3367 goto out_release_irq
;
3369 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3371 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3372 * mac80211 will not be run successfully. */
3373 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3374 test_bit(STATUS_READY
, &priv
->status
),
3375 UCODE_READY_TIMEOUT
);
3377 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3379 "Wait for START_ALIVE timeout after %dms.\n",
3380 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3382 goto out_release_irq
;
3386 /* ucode is running and will send rfkill notifications,
3387 * no need to poll the killswitch state anymore */
3388 cancel_delayed_work(&priv
->rfkill_poll
);
3391 IWL_DEBUG_MAC80211(priv
, "leave\n");
3396 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3400 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3402 struct iwl_priv
*priv
= hw
->priv
;
3404 IWL_DEBUG_MAC80211(priv
, "enter\n");
3406 if (!priv
->is_open
) {
3407 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3413 if (iwl_is_ready_rf(priv
)) {
3414 /* stop mac, cancel any scan request and clear
3415 * RXON_FILTER_ASSOC_MSK BIT
3417 mutex_lock(&priv
->mutex
);
3418 iwl_scan_cancel_timeout(priv
, 100);
3419 mutex_unlock(&priv
->mutex
);
3424 flush_workqueue(priv
->workqueue
);
3426 /* start polling the killswitch state again */
3427 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3428 round_jiffies_relative(2 * HZ
));
3430 IWL_DEBUG_MAC80211(priv
, "leave\n");
3433 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3435 struct iwl_priv
*priv
= hw
->priv
;
3437 IWL_DEBUG_MAC80211(priv
, "enter\n");
3439 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3440 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3442 if (iwl3945_tx_skb(priv
, skb
))
3443 dev_kfree_skb_any(skb
);
3445 IWL_DEBUG_MAC80211(priv
, "leave\n");
3446 return NETDEV_TX_OK
;
3449 void iwl3945_config_ap(struct iwl_priv
*priv
)
3453 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3456 /* The following should be done only at AP bring up */
3457 if (!(iwl_is_associated(priv
))) {
3459 /* RXON - unassoc (to set timing command) */
3460 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3461 iwlcore_commit_rxon(priv
);
3464 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3465 iwl3945_setup_rxon_timing(priv
);
3466 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3467 sizeof(priv
->rxon_timing
),
3468 &priv
->rxon_timing
);
3470 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3471 "Attempting to continue.\n");
3473 /* FIXME: what should be the assoc_id for AP? */
3474 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3475 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3476 priv
->staging_rxon
.flags
|=
3477 RXON_FLG_SHORT_PREAMBLE_MSK
;
3479 priv
->staging_rxon
.flags
&=
3480 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3482 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3483 if (priv
->assoc_capability
&
3484 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3485 priv
->staging_rxon
.flags
|=
3486 RXON_FLG_SHORT_SLOT_MSK
;
3488 priv
->staging_rxon
.flags
&=
3489 ~RXON_FLG_SHORT_SLOT_MSK
;
3491 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3492 priv
->staging_rxon
.flags
&=
3493 ~RXON_FLG_SHORT_SLOT_MSK
;
3495 /* restore RXON assoc */
3496 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3497 iwlcore_commit_rxon(priv
);
3498 priv
->cfg
->ops
->smgmt
->add_station(priv
, iwl_bcast_addr
, 0, 0, NULL
);
3500 iwl3945_send_beacon_cmd(priv
);
3502 /* FIXME - we need to add code here to detect a totally new
3503 * configuration, reset the AP, unassoc, rxon timing, assoc,
3504 * clear sta table, add BCAST sta... */
3507 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3508 struct ieee80211_vif
*vif
,
3509 struct ieee80211_sta
*sta
,
3510 struct ieee80211_key_conf
*key
)
3512 struct iwl_priv
*priv
= hw
->priv
;
3515 u8 sta_id
= IWL_INVALID_STATION
;
3518 IWL_DEBUG_MAC80211(priv
, "enter\n");
3520 if (iwl3945_mod_params
.sw_crypto
) {
3521 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3525 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3526 static_key
= !iwl_is_associated(priv
);
3529 sta_id
= priv
->cfg
->ops
->smgmt
->find_station(priv
, addr
);
3530 if (sta_id
== IWL_INVALID_STATION
) {
3531 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3537 mutex_lock(&priv
->mutex
);
3538 iwl_scan_cancel_timeout(priv
, 100);
3539 mutex_unlock(&priv
->mutex
);
3544 ret
= iwl3945_set_static_key(priv
, key
);
3546 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3547 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3551 ret
= iwl3945_remove_static_key(priv
);
3553 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3554 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3560 IWL_DEBUG_MAC80211(priv
, "leave\n");
3565 /*****************************************************************************
3569 *****************************************************************************/
3571 #ifdef CONFIG_IWLWIFI_DEBUG
3574 * The following adds a new attribute to the sysfs representation
3575 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3576 * used for controlling the debug level.
3578 * See the level definitions in iwl for details.
3580 static ssize_t
show_debug_level(struct device
*d
,
3581 struct device_attribute
*attr
, char *buf
)
3583 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3585 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
3587 static ssize_t
store_debug_level(struct device
*d
,
3588 struct device_attribute
*attr
,
3589 const char *buf
, size_t count
)
3591 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3595 ret
= strict_strtoul(buf
, 0, &val
);
3597 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3599 priv
->debug_level
= val
;
3601 return strnlen(buf
, count
);
3604 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3605 show_debug_level
, store_debug_level
);
3607 #endif /* CONFIG_IWLWIFI_DEBUG */
3609 static ssize_t
show_temperature(struct device
*d
,
3610 struct device_attribute
*attr
, char *buf
)
3612 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3614 if (!iwl_is_alive(priv
))
3617 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3620 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3622 static ssize_t
show_tx_power(struct device
*d
,
3623 struct device_attribute
*attr
, char *buf
)
3625 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3626 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3629 static ssize_t
store_tx_power(struct device
*d
,
3630 struct device_attribute
*attr
,
3631 const char *buf
, size_t count
)
3633 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3634 char *p
= (char *)buf
;
3637 val
= simple_strtoul(p
, &p
, 10);
3639 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3641 iwl3945_hw_reg_set_txpower(priv
, val
);
3646 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3648 static ssize_t
show_flags(struct device
*d
,
3649 struct device_attribute
*attr
, char *buf
)
3651 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3653 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3656 static ssize_t
store_flags(struct device
*d
,
3657 struct device_attribute
*attr
,
3658 const char *buf
, size_t count
)
3660 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3661 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3663 mutex_lock(&priv
->mutex
);
3664 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3665 /* Cancel any currently running scans... */
3666 if (iwl_scan_cancel_timeout(priv
, 100))
3667 IWL_WARN(priv
, "Could not cancel scan.\n");
3669 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3671 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3672 iwlcore_commit_rxon(priv
);
3675 mutex_unlock(&priv
->mutex
);
3680 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3682 static ssize_t
show_filter_flags(struct device
*d
,
3683 struct device_attribute
*attr
, char *buf
)
3685 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3687 return sprintf(buf
, "0x%04X\n",
3688 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3691 static ssize_t
store_filter_flags(struct device
*d
,
3692 struct device_attribute
*attr
,
3693 const char *buf
, size_t count
)
3695 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3696 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3698 mutex_lock(&priv
->mutex
);
3699 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3700 /* Cancel any currently running scans... */
3701 if (iwl_scan_cancel_timeout(priv
, 100))
3702 IWL_WARN(priv
, "Could not cancel scan.\n");
3704 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3705 "0x%04X\n", filter_flags
);
3706 priv
->staging_rxon
.filter_flags
=
3707 cpu_to_le32(filter_flags
);
3708 iwlcore_commit_rxon(priv
);
3711 mutex_unlock(&priv
->mutex
);
3716 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3717 store_filter_flags
);
3719 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3721 static ssize_t
show_measurement(struct device
*d
,
3722 struct device_attribute
*attr
, char *buf
)
3724 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3725 struct iwl_spectrum_notification measure_report
;
3726 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3727 u8
*data
= (u8
*)&measure_report
;
3728 unsigned long flags
;
3730 spin_lock_irqsave(&priv
->lock
, flags
);
3731 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3732 spin_unlock_irqrestore(&priv
->lock
, flags
);
3735 memcpy(&measure_report
, &priv
->measure_report
, size
);
3736 priv
->measurement_status
= 0;
3737 spin_unlock_irqrestore(&priv
->lock
, flags
);
3739 while (size
&& (PAGE_SIZE
- len
)) {
3740 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3741 PAGE_SIZE
- len
, 1);
3743 if (PAGE_SIZE
- len
)
3747 size
-= min(size
, 16U);
3753 static ssize_t
store_measurement(struct device
*d
,
3754 struct device_attribute
*attr
,
3755 const char *buf
, size_t count
)
3757 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3758 struct ieee80211_measurement_params params
= {
3759 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3760 .start_time
= cpu_to_le64(priv
->last_tsf
),
3761 .duration
= cpu_to_le16(1),
3763 u8 type
= IWL_MEASURE_BASIC
;
3769 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3770 channel
= simple_strtoul(p
, NULL
, 0);
3772 params
.channel
= channel
;
3775 while (*p
&& *p
!= ' ')
3778 type
= simple_strtoul(p
+ 1, NULL
, 0);
3781 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3782 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3783 iwl3945_get_measurement(priv
, ¶ms
, type
);
3788 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3789 show_measurement
, store_measurement
);
3790 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3792 static ssize_t
store_retry_rate(struct device
*d
,
3793 struct device_attribute
*attr
,
3794 const char *buf
, size_t count
)
3796 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3798 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3799 if (priv
->retry_rate
<= 0)
3800 priv
->retry_rate
= 1;
3805 static ssize_t
show_retry_rate(struct device
*d
,
3806 struct device_attribute
*attr
, char *buf
)
3808 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3809 return sprintf(buf
, "%d", priv
->retry_rate
);
3812 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3816 static ssize_t
store_power_level(struct device
*d
,
3817 struct device_attribute
*attr
,
3818 const char *buf
, size_t count
)
3820 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3825 mutex_lock(&priv
->mutex
);
3827 ret
= strict_strtoul(buf
, 10, &mode
);
3831 ret
= iwl_power_set_user_mode(priv
, mode
);
3833 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3839 mutex_unlock(&priv
->mutex
);
3843 static ssize_t
show_power_level(struct device
*d
,
3844 struct device_attribute
*attr
, char *buf
)
3846 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3847 int mode
= priv
->power_data
.user_power_setting
;
3848 int level
= priv
->power_data
.power_mode
;
3851 p
+= sprintf(p
, "INDEX:%d\t", level
);
3852 p
+= sprintf(p
, "USER:%d\n", mode
);
3856 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
,
3857 show_power_level
, store_power_level
);
3859 #define MAX_WX_STRING 80
3861 /* Values are in microsecond */
3862 static const s32 timeout_duration
[] = {
3869 static const s32 period_duration
[] = {
3877 static ssize_t
show_channels(struct device
*d
,
3878 struct device_attribute
*attr
, char *buf
)
3880 /* all this shit doesn't belong into sysfs anyway */
3884 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3886 static ssize_t
show_statistics(struct device
*d
,
3887 struct device_attribute
*attr
, char *buf
)
3889 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3890 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3891 u32 len
= 0, ofs
= 0;
3892 u8
*data
= (u8
*)&priv
->statistics_39
;
3895 if (!iwl_is_alive(priv
))
3898 mutex_lock(&priv
->mutex
);
3899 rc
= iwl_send_statistics_request(priv
, 0);
3900 mutex_unlock(&priv
->mutex
);
3904 "Error sending statistics request: 0x%08X\n", rc
);
3908 while (size
&& (PAGE_SIZE
- len
)) {
3909 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3910 PAGE_SIZE
- len
, 1);
3912 if (PAGE_SIZE
- len
)
3916 size
-= min(size
, 16U);
3922 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3924 static ssize_t
show_antenna(struct device
*d
,
3925 struct device_attribute
*attr
, char *buf
)
3927 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3929 if (!iwl_is_alive(priv
))
3932 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3935 static ssize_t
store_antenna(struct device
*d
,
3936 struct device_attribute
*attr
,
3937 const char *buf
, size_t count
)
3939 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3945 if (sscanf(buf
, "%1i", &ant
) != 1) {
3946 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3950 if ((ant
>= 0) && (ant
<= 2)) {
3951 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3952 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3954 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3960 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3962 static ssize_t
show_status(struct device
*d
,
3963 struct device_attribute
*attr
, char *buf
)
3965 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3966 if (!iwl_is_alive(priv
))
3968 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3971 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3973 static ssize_t
dump_error_log(struct device
*d
,
3974 struct device_attribute
*attr
,
3975 const char *buf
, size_t count
)
3977 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3978 char *p
= (char *)buf
;
3981 iwl3945_dump_nic_error_log(priv
);
3983 return strnlen(buf
, count
);
3986 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3988 static ssize_t
dump_event_log(struct device
*d
,
3989 struct device_attribute
*attr
,
3990 const char *buf
, size_t count
)
3992 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3993 char *p
= (char *)buf
;
3996 iwl3945_dump_nic_event_log(priv
);
3998 return strnlen(buf
, count
);
4001 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
4003 /*****************************************************************************
4005 * driver setup and tear down
4007 *****************************************************************************/
4009 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
4011 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
4013 init_waitqueue_head(&priv
->wait_command_queue
);
4015 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
4016 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
4017 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
4018 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
4019 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
4020 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
4021 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
4022 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
4023 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
4024 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
4025 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
4026 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
4028 iwl3945_hw_setup_deferred_work(priv
);
4030 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
4031 iwl3945_irq_tasklet
, (unsigned long)priv
);
4034 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
4036 iwl3945_hw_cancel_deferred_work(priv
);
4038 cancel_delayed_work_sync(&priv
->init_alive_start
);
4039 cancel_delayed_work(&priv
->scan_check
);
4040 cancel_delayed_work(&priv
->alive_start
);
4041 cancel_work_sync(&priv
->beacon_update
);
4044 static struct attribute
*iwl3945_sysfs_entries
[] = {
4045 &dev_attr_antenna
.attr
,
4046 &dev_attr_channels
.attr
,
4047 &dev_attr_dump_errors
.attr
,
4048 &dev_attr_dump_events
.attr
,
4049 &dev_attr_flags
.attr
,
4050 &dev_attr_filter_flags
.attr
,
4051 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4052 &dev_attr_measurement
.attr
,
4054 &dev_attr_power_level
.attr
,
4055 &dev_attr_retry_rate
.attr
,
4056 &dev_attr_statistics
.attr
,
4057 &dev_attr_status
.attr
,
4058 &dev_attr_temperature
.attr
,
4059 &dev_attr_tx_power
.attr
,
4060 #ifdef CONFIG_IWLWIFI_DEBUG
4061 &dev_attr_debug_level
.attr
,
4066 static struct attribute_group iwl3945_attribute_group
= {
4067 .name
= NULL
, /* put in device directory */
4068 .attrs
= iwl3945_sysfs_entries
,
4071 static struct ieee80211_ops iwl3945_hw_ops
= {
4072 .tx
= iwl3945_mac_tx
,
4073 .start
= iwl3945_mac_start
,
4074 .stop
= iwl3945_mac_stop
,
4075 .add_interface
= iwl_mac_add_interface
,
4076 .remove_interface
= iwl_mac_remove_interface
,
4077 .config
= iwl_mac_config
,
4078 .configure_filter
= iwl_configure_filter
,
4079 .set_key
= iwl3945_mac_set_key
,
4080 .get_tx_stats
= iwl_mac_get_tx_stats
,
4081 .conf_tx
= iwl_mac_conf_tx
,
4082 .reset_tsf
= iwl_mac_reset_tsf
,
4083 .bss_info_changed
= iwl_bss_info_changed
,
4084 .hw_scan
= iwl_mac_hw_scan
4087 static int iwl3945_init_drv(struct iwl_priv
*priv
)
4090 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4092 priv
->retry_rate
= 1;
4093 priv
->ibss_beacon
= NULL
;
4095 spin_lock_init(&priv
->lock
);
4096 spin_lock_init(&priv
->sta_lock
);
4097 spin_lock_init(&priv
->hcmd_lock
);
4099 INIT_LIST_HEAD(&priv
->free_frames
);
4101 mutex_init(&priv
->mutex
);
4103 /* Clear the driver's (not device's) station table */
4104 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
4106 priv
->data_retry_limit
= -1;
4107 priv
->ieee_channels
= NULL
;
4108 priv
->ieee_rates
= NULL
;
4109 priv
->band
= IEEE80211_BAND_2GHZ
;
4111 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
4113 iwl_reset_qos(priv
);
4115 priv
->qos_data
.qos_active
= 0;
4116 priv
->qos_data
.qos_cap
.val
= 0;
4118 priv
->rates_mask
= IWL_RATES_MASK
;
4119 /* If power management is turned on, default to CAM mode */
4120 priv
->power_mode
= IWL_POWER_MODE_CAM
;
4121 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
4123 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
4124 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
4129 ret
= iwl_init_channel_map(priv
);
4131 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
4135 /* Set up txpower settings in driver for all channels */
4136 if (iwl3945_txpower_set_from_eeprom(priv
)) {
4138 goto err_free_channel_map
;
4141 ret
= iwlcore_init_geos(priv
);
4143 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
4144 goto err_free_channel_map
;
4146 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
4150 err_free_channel_map
:
4151 iwl_free_channel_map(priv
);
4156 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
4159 struct ieee80211_hw
*hw
= priv
->hw
;
4161 hw
->rate_control_algorithm
= "iwl-3945-rs";
4162 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
4164 /* Tell mac80211 our characteristics */
4165 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
4166 IEEE80211_HW_NOISE_DBM
|
4167 IEEE80211_HW_SPECTRUM_MGMT
;
4169 hw
->wiphy
->interface_modes
=
4170 BIT(NL80211_IFTYPE_STATION
) |
4171 BIT(NL80211_IFTYPE_ADHOC
);
4173 hw
->wiphy
->custom_regulatory
= true;
4175 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
4176 /* we create the 802.11 header and a zero-length SSID element */
4177 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
4179 /* Default value; 4 EDCA QOS priorities */
4182 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
4183 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
4184 &priv
->bands
[IEEE80211_BAND_2GHZ
];
4186 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
4187 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
4188 &priv
->bands
[IEEE80211_BAND_5GHZ
];
4190 ret
= ieee80211_register_hw(priv
->hw
);
4192 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
4195 priv
->mac80211_registered
= 1;
4200 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4203 struct iwl_priv
*priv
;
4204 struct ieee80211_hw
*hw
;
4205 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
4206 struct iwl3945_eeprom
*eeprom
;
4207 unsigned long flags
;
4209 /***********************
4210 * 1. Allocating HW data
4211 * ********************/
4213 /* mac80211 allocates memory for this device instance, including
4214 * space for this driver's private structure */
4215 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
4217 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
4222 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
4224 if ((iwl3945_mod_params
.num_of_queues
> IWL39_MAX_NUM_QUEUES
) ||
4225 (iwl3945_mod_params
.num_of_queues
< IWL_MIN_NUM_QUEUES
)) {
4227 "invalid queues_num, should be between %d and %d\n",
4228 IWL_MIN_NUM_QUEUES
, IWL39_MAX_NUM_QUEUES
);
4230 goto out_ieee80211_free_hw
;
4234 * Disabling hardware scan means that mac80211 will perform scans
4235 * "the hard way", rather than using device's scan.
4237 if (iwl3945_mod_params
.disable_hw_scan
) {
4238 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
4239 iwl3945_hw_ops
.hw_scan
= NULL
;
4243 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
4245 priv
->pci_dev
= pdev
;
4247 #ifdef CONFIG_IWLWIFI_DEBUG
4248 priv
->debug_level
= iwl3945_mod_params
.debug
;
4249 atomic_set(&priv
->restrict_refcnt
, 0);
4252 /***************************
4253 * 2. Initializing PCI bus
4254 * *************************/
4255 if (pci_enable_device(pdev
)) {
4257 goto out_ieee80211_free_hw
;
4260 pci_set_master(pdev
);
4262 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4264 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4266 IWL_WARN(priv
, "No suitable DMA available.\n");
4267 goto out_pci_disable_device
;
4270 pci_set_drvdata(pdev
, priv
);
4271 err
= pci_request_regions(pdev
, DRV_NAME
);
4273 goto out_pci_disable_device
;
4275 /***********************
4276 * 3. Read REV Register
4277 * ********************/
4278 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4279 if (!priv
->hw_base
) {
4281 goto out_pci_release_regions
;
4284 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4285 (unsigned long long) pci_resource_len(pdev
, 0));
4286 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4288 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4289 * PCI Tx retries from interfering with C3 CPU state */
4290 pci_write_config_byte(pdev
, 0x41, 0x00);
4293 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
4295 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
4299 /***********************
4301 * ********************/
4303 /* Read the EEPROM */
4304 err
= iwl_eeprom_init(priv
);
4306 IWL_ERR(priv
, "Unable to init EEPROM\n");
4309 /* MAC Address location in EEPROM same for 3945/4965 */
4310 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4311 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4312 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4313 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4315 /***********************
4316 * 5. Setup HW Constants
4317 * ********************/
4318 /* Device-specific setup */
4319 if (iwl3945_hw_set_hw_params(priv
)) {
4320 IWL_ERR(priv
, "failed to set hw settings\n");
4321 goto out_eeprom_free
;
4324 /***********************
4326 * ********************/
4328 err
= iwl3945_init_drv(priv
);
4330 IWL_ERR(priv
, "initializing driver failed\n");
4331 goto out_unset_hw_params
;
4334 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4337 /***********************
4339 * ********************/
4341 spin_lock_irqsave(&priv
->lock
, flags
);
4342 iwl_disable_interrupts(priv
);
4343 spin_unlock_irqrestore(&priv
->lock
, flags
);
4345 pci_enable_msi(priv
->pci_dev
);
4347 err
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
4350 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4351 goto out_disable_msi
;
4354 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4356 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4357 goto out_release_irq
;
4360 iwl_set_rxon_channel(priv
,
4361 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4362 iwl3945_setup_deferred_work(priv
);
4363 iwl3945_setup_rx_handlers(priv
);
4365 /*********************************
4366 * 8. Setup and Register mac80211
4367 * *******************************/
4369 iwl_enable_interrupts(priv
);
4371 err
= iwl3945_setup_mac(priv
);
4373 goto out_remove_sysfs
;
4375 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4377 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4379 err
= iwl_rfkill_init(priv
);
4381 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
4382 "Ignoring error: %d\n", err
);
4384 iwl_rfkill_set_hw_state(priv
);
4386 /* Start monitoring the killswitch */
4387 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4393 destroy_workqueue(priv
->workqueue
);
4394 priv
->workqueue
= NULL
;
4395 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4397 free_irq(priv
->pci_dev
->irq
, priv
);
4399 pci_disable_msi(priv
->pci_dev
);
4400 iwlcore_free_geos(priv
);
4401 iwl_free_channel_map(priv
);
4402 out_unset_hw_params
:
4403 iwl3945_unset_hw_params(priv
);
4405 iwl_eeprom_free(priv
);
4407 pci_iounmap(pdev
, priv
->hw_base
);
4408 out_pci_release_regions
:
4409 pci_release_regions(pdev
);
4410 out_pci_disable_device
:
4411 pci_set_drvdata(pdev
, NULL
);
4412 pci_disable_device(pdev
);
4413 out_ieee80211_free_hw
:
4414 ieee80211_free_hw(priv
->hw
);
4419 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4421 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4422 unsigned long flags
;
4427 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4429 iwl_dbgfs_unregister(priv
);
4431 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4433 if (priv
->mac80211_registered
) {
4434 ieee80211_unregister_hw(priv
->hw
);
4435 priv
->mac80211_registered
= 0;
4440 /* make sure we flush any pending irq or
4441 * tasklet for the driver
4443 spin_lock_irqsave(&priv
->lock
, flags
);
4444 iwl_disable_interrupts(priv
);
4445 spin_unlock_irqrestore(&priv
->lock
, flags
);
4447 iwl_synchronize_irq(priv
);
4449 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4451 iwl_rfkill_unregister(priv
);
4452 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4454 iwl3945_dealloc_ucode_pci(priv
);
4457 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4458 iwl3945_hw_txq_ctx_free(priv
);
4460 iwl3945_unset_hw_params(priv
);
4461 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
4463 /*netif_stop_queue(dev); */
4464 flush_workqueue(priv
->workqueue
);
4466 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4467 * priv->workqueue... so we can't take down the workqueue
4469 destroy_workqueue(priv
->workqueue
);
4470 priv
->workqueue
= NULL
;
4472 free_irq(pdev
->irq
, priv
);
4473 pci_disable_msi(pdev
);
4475 pci_iounmap(pdev
, priv
->hw_base
);
4476 pci_release_regions(pdev
);
4477 pci_disable_device(pdev
);
4478 pci_set_drvdata(pdev
, NULL
);
4480 iwl_free_channel_map(priv
);
4481 iwlcore_free_geos(priv
);
4483 if (priv
->ibss_beacon
)
4484 dev_kfree_skb(priv
->ibss_beacon
);
4486 ieee80211_free_hw(priv
->hw
);
4490 /*****************************************************************************
4492 * driver and module entry point
4494 *****************************************************************************/
4496 static struct pci_driver iwl3945_driver
= {
4498 .id_table
= iwl3945_hw_card_ids
,
4499 .probe
= iwl3945_pci_probe
,
4500 .remove
= __devexit_p(iwl3945_pci_remove
),
4502 .suspend
= iwl_pci_suspend
,
4503 .resume
= iwl_pci_resume
,
4507 static int __init
iwl3945_init(void)
4511 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4512 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4514 ret
= iwl3945_rate_control_register();
4516 printk(KERN_ERR DRV_NAME
4517 "Unable to register rate control algorithm: %d\n", ret
);
4521 ret
= pci_register_driver(&iwl3945_driver
);
4523 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4524 goto error_register
;
4530 iwl3945_rate_control_unregister();
4534 static void __exit
iwl3945_exit(void)
4536 pci_unregister_driver(&iwl3945_driver
);
4537 iwl3945_rate_control_unregister();
4540 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4542 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, 0444);
4543 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4544 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, 0444);
4545 MODULE_PARM_DESC(swcrypto
,
4546 "using software crypto (default 1 [software])\n");
4547 module_param_named(debug
, iwl3945_mod_params
.debug
, uint
, 0444);
4548 MODULE_PARM_DESC(debug
, "debug output mask");
4549 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
, int, 0444);
4550 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4552 module_param_named(queues_num
, iwl3945_mod_params
.num_of_queues
, int, 0444);
4553 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
4555 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, 0444);
4556 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4558 module_exit(iwl3945_exit
);
4559 module_init(iwl3945_init
);