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 iwl_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 iwl_hw_key
*keyinfo
= &priv
->stations_39
[sta_id
].keyinfo
;
583 switch (keyinfo
->alg
) {
585 tx
->sec_ctl
= TX_CMD_SEC_CCM
;
586 memcpy(tx
->key
, keyinfo
->key
, keyinfo
->keylen
);
587 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
594 tx
->sec_ctl
= TX_CMD_SEC_WEP
|
595 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
597 if (keyinfo
->keylen
== 13)
598 tx
->sec_ctl
|= TX_CMD_SEC_KEY128
;
600 memcpy(&tx
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
602 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
603 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
607 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
613 * handle build REPLY_TX command notification.
615 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
617 struct ieee80211_tx_info
*info
,
618 struct ieee80211_hdr
*hdr
, u8 std_id
)
620 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
621 __le32 tx_flags
= tx
->tx_flags
;
622 __le16 fc
= hdr
->frame_control
;
623 u8 rc_flags
= info
->control
.rates
[0].flags
;
625 tx
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
626 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
627 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
628 if (ieee80211_is_mgmt(fc
))
629 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
630 if (ieee80211_is_probe_resp(fc
) &&
631 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
632 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
634 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
635 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
639 if (ieee80211_has_morefrags(fc
))
640 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
642 if (ieee80211_is_data_qos(fc
)) {
643 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
644 tx
->tid_tspec
= qc
[0] & 0xf;
645 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
647 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
650 if (rc_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
651 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
652 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
653 } else if (rc_flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
654 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
655 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
658 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
659 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
661 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
662 if (ieee80211_is_mgmt(fc
)) {
663 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
664 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
666 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
668 tx
->timeout
.pm_frame_timeout
= 0;
669 #ifdef CONFIG_IWLWIFI_LEDS
670 priv
->rxtxpackets
+= le16_to_cpu(cmd
->cmd
.tx
.len
);
675 tx
->tx_flags
= tx_flags
;
676 tx
->next_frame_len
= 0;
680 * start REPLY_TX command process
682 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
684 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
685 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
686 struct iwl3945_tx_cmd
*tx
;
687 struct iwl_tx_queue
*txq
= NULL
;
688 struct iwl_queue
*q
= NULL
;
689 struct iwl_cmd
*out_cmd
= NULL
;
690 dma_addr_t phys_addr
;
691 dma_addr_t txcmd_phys
;
692 int txq_id
= skb_get_queue_mapping(skb
);
693 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
700 u8 wait_write_ptr
= 0;
705 spin_lock_irqsave(&priv
->lock
, flags
);
706 if (iwl_is_rfkill(priv
)) {
707 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
711 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
712 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
716 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
719 fc
= hdr
->frame_control
;
721 #ifdef CONFIG_IWLWIFI_DEBUG
722 if (ieee80211_is_auth(fc
))
723 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
724 else if (ieee80211_is_assoc_req(fc
))
725 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
726 else if (ieee80211_is_reassoc_req(fc
))
727 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
730 /* drop all data frame if we are not associated */
731 if (ieee80211_is_data(fc
) &&
732 (!iwl_is_monitor_mode(priv
)) && /* packet injection */
733 (!iwl_is_associated(priv
) ||
734 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
735 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
739 spin_unlock_irqrestore(&priv
->lock
, flags
);
741 hdr_len
= ieee80211_hdrlen(fc
);
743 /* Find (or create) index into station table for destination station */
744 sta_id
= iwl_get_sta_id(priv
, hdr
);
745 if (sta_id
== IWL_INVALID_STATION
) {
746 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
751 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
753 if (ieee80211_is_data_qos(fc
)) {
754 qc
= ieee80211_get_qos_ctl(hdr
);
755 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
756 seq_number
= priv
->stations_39
[sta_id
].tid
[tid
].seq_number
&
758 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
760 cpu_to_le16(IEEE80211_SCTL_FRAG
));
764 /* Descriptor for chosen Tx queue */
765 txq
= &priv
->txq
[txq_id
];
768 spin_lock_irqsave(&priv
->lock
, flags
);
770 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
772 /* Set up driver data for this TFD */
773 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
774 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
776 /* Init first empty entry in queue's array of Tx/cmd buffers */
777 out_cmd
= txq
->cmd
[idx
];
778 tx
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
779 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
780 memset(tx
, 0, sizeof(*tx
));
783 * Set up the Tx-command (not MAC!) header.
784 * Store the chosen Tx queue and TFD index within the sequence field;
785 * after Tx, uCode's Tx response will return this value so driver can
786 * locate the frame within the tx queue and do post-tx processing.
788 out_cmd
->hdr
.cmd
= REPLY_TX
;
789 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
790 INDEX_TO_SEQ(q
->write_ptr
)));
792 /* Copy MAC header from skb into command buffer */
793 memcpy(tx
->hdr
, hdr
, hdr_len
);
796 if (info
->control
.hw_key
)
797 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
799 /* TODO need this for burst mode later on */
800 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
802 /* set is_hcca to 0; it probably will never be implemented */
803 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
805 /* Total # bytes to be transmitted */
807 tx
->len
= cpu_to_le16(len
);
810 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
811 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
813 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
814 txq
->need_update
= 1;
816 priv
->stations_39
[sta_id
].tid
[tid
].seq_number
= seq_number
;
819 txq
->need_update
= 0;
822 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
823 le16_to_cpu(out_cmd
->hdr
.sequence
));
824 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx
->tx_flags
));
825 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx
, sizeof(*tx
));
826 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx
->hdr
,
827 ieee80211_hdrlen(fc
));
830 * Use the first empty entry in this queue's command buffer array
831 * to contain the Tx command and MAC header concatenated together
832 * (payload data will be in another buffer).
833 * Size of this varies, due to varying MAC header length.
834 * If end is not dword aligned, we'll have 2 extra bytes at the end
835 * of the MAC header (device reads on dword boundaries).
836 * We'll tell device about this padding later.
838 len
= sizeof(struct iwl3945_tx_cmd
) +
839 sizeof(struct iwl_cmd_header
) + hdr_len
;
842 len
= (len
+ 3) & ~3;
849 /* Physical address of this Tx command's header (not MAC header!),
850 * within command buffer array. */
851 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
852 len
, PCI_DMA_TODEVICE
);
853 /* we do not map meta data ... so we can safely access address to
854 * provide to unmap command*/
855 pci_unmap_addr_set(&out_cmd
->meta
, mapping
, txcmd_phys
);
856 pci_unmap_len_set(&out_cmd
->meta
, len
, len
);
858 /* Add buffer containing Tx command and MAC(!) header to TFD's
860 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
861 txcmd_phys
, len
, 1, 0);
864 /* Set up TFD's 2nd entry to point directly to remainder of skb,
865 * if any (802.11 null frames have no payload). */
866 len
= skb
->len
- hdr_len
;
868 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
869 len
, PCI_DMA_TODEVICE
);
870 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
876 /* Tell device the write index *just past* this latest filled TFD */
877 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
878 rc
= iwl_txq_update_write_ptr(priv
, txq
);
879 spin_unlock_irqrestore(&priv
->lock
, flags
);
884 if ((iwl_queue_space(q
) < q
->high_mark
)
885 && priv
->mac80211_registered
) {
886 if (wait_write_ptr
) {
887 spin_lock_irqsave(&priv
->lock
, flags
);
888 txq
->need_update
= 1;
889 iwl_txq_update_write_ptr(priv
, txq
);
890 spin_unlock_irqrestore(&priv
->lock
, flags
);
893 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
899 spin_unlock_irqrestore(&priv
->lock
, flags
);
904 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
906 #include "iwl-spectrum.h"
908 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
909 #define BEACON_TIME_MASK_HIGH 0xFF000000
910 #define TIME_UNIT 1024
913 * extended beacon time format
914 * time in usec will be changed into a 32-bit value in 8:24 format
915 * the high 1 byte is the beacon counts
916 * the lower 3 bytes is the time in usec within one beacon interval
919 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
923 u32 interval
= beacon_interval
* 1024;
925 if (!interval
|| !usec
)
928 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
929 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
931 return (quot
<< 24) + rem
;
934 /* base is usually what we get from ucode with each received frame,
935 * the same as HW timer counter counting down
938 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
940 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
941 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
942 u32 interval
= beacon_interval
* TIME_UNIT
;
943 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
944 (addon
& BEACON_TIME_MASK_HIGH
);
946 if (base_low
> addon_low
)
947 res
+= base_low
- addon_low
;
948 else if (base_low
< addon_low
) {
949 res
+= interval
+ base_low
- addon_low
;
954 return cpu_to_le32(res
);
957 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
958 struct ieee80211_measurement_params
*params
,
961 struct iwl_spectrum_cmd spectrum
;
962 struct iwl_rx_packet
*res
;
963 struct iwl_host_cmd cmd
= {
964 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
965 .data
= (void *)&spectrum
,
966 .meta
.flags
= CMD_WANT_SKB
,
968 u32 add_time
= le64_to_cpu(params
->start_time
);
970 int spectrum_resp_status
;
971 int duration
= le16_to_cpu(params
->duration
);
973 if (iwl_is_associated(priv
))
975 iwl3945_usecs_to_beacons(
976 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
977 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
979 memset(&spectrum
, 0, sizeof(spectrum
));
981 spectrum
.channel_count
= cpu_to_le16(1);
983 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
984 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
985 cmd
.len
= sizeof(spectrum
);
986 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
988 if (iwl_is_associated(priv
))
989 spectrum
.start_time
=
990 iwl3945_add_beacon_time(priv
->last_beacon_time
,
992 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
994 spectrum
.start_time
= 0;
996 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
997 spectrum
.channels
[0].channel
= params
->channel
;
998 spectrum
.channels
[0].type
= type
;
999 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
1000 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
1001 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
1003 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1007 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1008 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1009 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
1013 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
1014 switch (spectrum_resp_status
) {
1015 case 0: /* Command will be handled */
1016 if (res
->u
.spectrum
.id
!= 0xff) {
1017 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
1018 res
->u
.spectrum
.id
);
1019 priv
->measurement_status
&= ~MEASUREMENT_READY
;
1021 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
1025 case 1: /* Command will not be handled */
1030 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1036 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
1037 struct iwl_rx_mem_buffer
*rxb
)
1039 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1040 struct iwl_alive_resp
*palive
;
1041 struct delayed_work
*pwork
;
1043 palive
= &pkt
->u
.alive_frame
;
1045 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
1047 palive
->is_valid
, palive
->ver_type
,
1048 palive
->ver_subtype
);
1050 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
1051 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
1052 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
1053 sizeof(struct iwl_alive_resp
));
1054 pwork
= &priv
->init_alive_start
;
1056 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1057 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
1058 sizeof(struct iwl_alive_resp
));
1059 pwork
= &priv
->alive_start
;
1060 iwl3945_disable_events(priv
);
1063 /* We delay the ALIVE response by 5ms to
1064 * give the HW RF Kill time to activate... */
1065 if (palive
->is_valid
== UCODE_VALID_OK
)
1066 queue_delayed_work(priv
->workqueue
, pwork
,
1067 msecs_to_jiffies(5));
1069 IWL_WARN(priv
, "uCode did not respond OK.\n");
1072 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
1073 struct iwl_rx_mem_buffer
*rxb
)
1075 #ifdef CONFIG_IWLWIFI_DEBUG
1076 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1079 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
1083 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
1085 struct iwl_priv
*priv
=
1086 container_of(work
, struct iwl_priv
, beacon_update
);
1087 struct sk_buff
*beacon
;
1089 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1090 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
1093 IWL_ERR(priv
, "update beacon failed\n");
1097 mutex_lock(&priv
->mutex
);
1098 /* new beacon skb is allocated every time; dispose previous.*/
1099 if (priv
->ibss_beacon
)
1100 dev_kfree_skb(priv
->ibss_beacon
);
1102 priv
->ibss_beacon
= beacon
;
1103 mutex_unlock(&priv
->mutex
);
1105 iwl3945_send_beacon_cmd(priv
);
1108 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
1109 struct iwl_rx_mem_buffer
*rxb
)
1111 #ifdef CONFIG_IWLWIFI_DEBUG
1112 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1113 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
1114 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
1116 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
1117 "tsf %d %d rate %d\n",
1118 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
1119 beacon
->beacon_notify_hdr
.failure_frame
,
1120 le32_to_cpu(beacon
->ibss_mgr_status
),
1121 le32_to_cpu(beacon
->high_tsf
),
1122 le32_to_cpu(beacon
->low_tsf
), rate
);
1125 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
1126 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
1127 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1130 /* Handle notification from uCode that card's power state is changing
1131 * due to software, hardware, or critical temperature RFKILL */
1132 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
1133 struct iwl_rx_mem_buffer
*rxb
)
1135 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
1136 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
1137 unsigned long status
= priv
->status
;
1139 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
1140 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
1141 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
1143 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
1144 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1146 if (flags
& HW_CARD_DISABLED
)
1147 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1149 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1152 if (flags
& SW_CARD_DISABLED
)
1153 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1155 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
1157 iwl_scan_cancel(priv
);
1159 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
1160 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
1161 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
1162 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
1163 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1165 wake_up_interruptible(&priv
->wait_command_queue
);
1169 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1171 * Setup the RX handlers for each of the reply types sent from the uCode
1174 * This function chains into the hardware specific files for them to setup
1175 * any hardware specific handlers as well.
1177 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
1179 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
1180 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
1181 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
1182 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
1183 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
1184 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
1185 iwl_rx_pm_debug_statistics_notif
;
1186 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
1189 * The same handler is used for both the REPLY to a discrete
1190 * statistics request from the host as well as for the periodic
1191 * statistics notifications (after received beacons) from the uCode.
1193 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
1194 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
1196 iwl_setup_spectrum_handlers(priv
);
1197 iwl_setup_rx_scan_handlers(priv
);
1198 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
1200 /* Set up hardware specific Rx handlers */
1201 iwl3945_hw_rx_handler_setup(priv
);
1204 /************************** RX-FUNCTIONS ****************************/
1206 * Rx theory of operation
1208 * The host allocates 32 DMA target addresses and passes the host address
1209 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1213 * The host/firmware share two index registers for managing the Rx buffers.
1215 * The READ index maps to the first position that the firmware may be writing
1216 * to -- the driver can read up to (but not including) this position and get
1218 * The READ index is managed by the firmware once the card is enabled.
1220 * The WRITE index maps to the last position the driver has read from -- the
1221 * position preceding WRITE is the last slot the firmware can place a packet.
1223 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1226 * During initialization, the host sets up the READ queue position to the first
1227 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1229 * When the firmware places a packet in a buffer, it will advance the READ index
1230 * and fire the RX interrupt. The driver can then query the READ index and
1231 * process as many packets as possible, moving the WRITE index forward as it
1232 * resets the Rx queue buffers with new memory.
1234 * The management in the driver is as follows:
1235 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1236 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1237 * to replenish the iwl->rxq->rx_free.
1238 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1239 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1240 * 'processed' and 'read' driver indexes as well)
1241 * + A received packet is processed and handed to the kernel network stack,
1242 * detached from the iwl->rxq. The driver 'processed' index is updated.
1243 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1244 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1245 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1246 * were enough free buffers and RX_STALLED is set it is cleared.
1251 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1252 * iwl3945_rx_queue_restock
1253 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1254 * queue, updates firmware pointers, and updates
1255 * the WRITE index. If insufficient rx_free buffers
1256 * are available, schedules iwl3945_rx_replenish
1258 * -- enable interrupts --
1259 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1260 * READ INDEX, detaching the SKB from the pool.
1261 * Moves the packet buffer from queue to rx_used.
1262 * Calls iwl3945_rx_queue_restock to refill any empty
1269 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1271 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1272 dma_addr_t dma_addr
)
1274 return cpu_to_le32((u32
)dma_addr
);
1278 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1280 * If there are slots in the RX queue that need to be restocked,
1281 * and we have free pre-allocated buffers, fill the ranks as much
1282 * as we can, pulling from rx_free.
1284 * This moves the 'write' index forward to catch up with 'processed', and
1285 * also updates the memory address in the firmware to reference the new
1288 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1290 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1291 struct list_head
*element
;
1292 struct iwl_rx_mem_buffer
*rxb
;
1293 unsigned long flags
;
1296 spin_lock_irqsave(&rxq
->lock
, flags
);
1297 write
= rxq
->write
& ~0x7;
1298 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1299 /* Get next free Rx buffer, remove from free list */
1300 element
= rxq
->rx_free
.next
;
1301 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1304 /* Point to Rx buffer via next RBD in circular buffer */
1305 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->real_dma_addr
);
1306 rxq
->queue
[rxq
->write
] = rxb
;
1307 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1310 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1311 /* If the pre-allocated buffer pool is dropping low, schedule to
1313 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1314 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1317 /* If we've added more space for the firmware to place data, tell it.
1318 * Increment device's write pointer in multiples of 8. */
1319 if ((write
!= (rxq
->write
& ~0x7))
1320 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1321 spin_lock_irqsave(&rxq
->lock
, flags
);
1322 rxq
->need_update
= 1;
1323 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1324 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1333 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1335 * When moving to rx_free an SKB is allocated for the slot.
1337 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1338 * This is called as a scheduled work item (except for during initialization)
1340 static void iwl3945_rx_allocate(struct iwl_priv
*priv
)
1342 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1343 struct list_head
*element
;
1344 struct iwl_rx_mem_buffer
*rxb
;
1345 unsigned long flags
;
1348 spin_lock_irqsave(&rxq
->lock
, flags
);
1350 if (list_empty(&rxq
->rx_used
)) {
1351 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1355 element
= rxq
->rx_used
.next
;
1356 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1358 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1360 /* Alloc a new receive buffer */
1362 alloc_skb(priv
->hw_params
.rx_buf_size
,
1365 if (net_ratelimit())
1366 IWL_CRIT(priv
, ": Can not allocate SKB buffers\n");
1367 /* We don't reschedule replenish work here -- we will
1368 * call the restock method and if it still needs
1369 * more buffers it will schedule replenish */
1373 /* If radiotap head is required, reserve some headroom here.
1374 * The physical head count is a variable rx_stats->phy_count.
1375 * We reserve 4 bytes here. Plus these extra bytes, the
1376 * headroom of the physical head should be enough for the
1377 * radiotap head that iwl3945 supported. See iwl3945_rt.
1379 skb_reserve(rxb
->skb
, 4);
1381 /* Get physical address of RB/SKB */
1382 rxb
->real_dma_addr
= pci_map_single(priv
->pci_dev
,
1384 priv
->hw_params
.rx_buf_size
,
1385 PCI_DMA_FROMDEVICE
);
1387 spin_lock_irqsave(&rxq
->lock
, flags
);
1388 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1389 priv
->alloc_rxb_skb
++;
1391 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1395 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1397 unsigned long flags
;
1399 spin_lock_irqsave(&rxq
->lock
, flags
);
1400 INIT_LIST_HEAD(&rxq
->rx_free
);
1401 INIT_LIST_HEAD(&rxq
->rx_used
);
1402 /* Fill the rx_used queue with _all_ of the Rx buffers */
1403 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1404 /* In the reset function, these buffers may have been allocated
1405 * to an SKB, so we need to unmap and free potential storage */
1406 if (rxq
->pool
[i
].skb
!= NULL
) {
1407 pci_unmap_single(priv
->pci_dev
,
1408 rxq
->pool
[i
].real_dma_addr
,
1409 priv
->hw_params
.rx_buf_size
,
1410 PCI_DMA_FROMDEVICE
);
1411 priv
->alloc_rxb_skb
--;
1412 dev_kfree_skb(rxq
->pool
[i
].skb
);
1413 rxq
->pool
[i
].skb
= NULL
;
1415 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1418 /* Set us so that we have processed and used all buffers, but have
1419 * not restocked the Rx queue with fresh buffers */
1420 rxq
->read
= rxq
->write
= 0;
1421 rxq
->free_count
= 0;
1422 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1425 void iwl3945_rx_replenish(void *data
)
1427 struct iwl_priv
*priv
= data
;
1428 unsigned long flags
;
1430 iwl3945_rx_allocate(priv
);
1432 spin_lock_irqsave(&priv
->lock
, flags
);
1433 iwl3945_rx_queue_restock(priv
);
1434 spin_unlock_irqrestore(&priv
->lock
, flags
);
1437 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1438 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1439 * This free routine walks the list of POOL entries and if SKB is set to
1440 * non NULL it is unmapped and freed
1442 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1445 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1446 if (rxq
->pool
[i
].skb
!= NULL
) {
1447 pci_unmap_single(priv
->pci_dev
,
1448 rxq
->pool
[i
].real_dma_addr
,
1449 priv
->hw_params
.rx_buf_size
,
1450 PCI_DMA_FROMDEVICE
);
1451 dev_kfree_skb(rxq
->pool
[i
].skb
);
1455 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1457 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1458 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1460 rxq
->rb_stts
= NULL
;
1464 /* Convert linear signal-to-noise ratio into dB */
1465 static u8 ratio2dB
[100] = {
1466 /* 0 1 2 3 4 5 6 7 8 9 */
1467 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1468 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1469 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1470 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1471 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1472 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1473 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1474 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1475 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1476 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1479 /* Calculates a relative dB value from a ratio of linear
1480 * (i.e. not dB) signal levels.
1481 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1482 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1484 /* 1000:1 or higher just report as 60 dB */
1485 if (sig_ratio
>= 1000)
1488 /* 100:1 or higher, divide by 10 and use table,
1489 * add 20 dB to make up for divide by 10 */
1490 if (sig_ratio
>= 100)
1491 return 20 + (int)ratio2dB
[sig_ratio
/10];
1493 /* We shouldn't see this */
1497 /* Use table for ratios 1:1 - 99:1 */
1498 return (int)ratio2dB
[sig_ratio
];
1501 #define PERFECT_RSSI (-20) /* dBm */
1502 #define WORST_RSSI (-95) /* dBm */
1503 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1505 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1506 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1507 * about formulas used below. */
1508 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1511 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1513 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1514 * as indicator; formula is (signal dbm - noise dbm).
1515 * SNR at or above 40 is a great signal (100%).
1516 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1517 * Weakest usable signal is usually 10 - 15 dB SNR. */
1519 if (rssi_dbm
- noise_dbm
>= 40)
1521 else if (rssi_dbm
< noise_dbm
)
1523 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1525 /* Else use just the signal level.
1526 * This formula is a least squares fit of data points collected and
1527 * compared with a reference system that had a percentage (%) display
1528 * for signal quality. */
1530 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1531 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1532 (RSSI_RANGE
* RSSI_RANGE
);
1536 else if (sig_qual
< 1)
1543 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1545 * Uses the priv->rx_handlers callback function array to invoke
1546 * the appropriate handlers, including command responses,
1547 * frame-received notifications, and other notifications.
1549 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1551 struct iwl_rx_mem_buffer
*rxb
;
1552 struct iwl_rx_packet
*pkt
;
1553 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1556 unsigned long flags
;
1560 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1561 * buffer that the driver may process (last buffer filled by ucode). */
1562 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1565 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
1567 /* Rx interrupt, but nothing sent from uCode */
1569 IWL_DEBUG(priv
, IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
1572 rxb
= rxq
->queue
[i
];
1574 /* If an RXB doesn't have a Rx queue slot associated with it,
1575 * then a bug has been introduced in the queue refilling
1576 * routines -- catch it here */
1577 BUG_ON(rxb
== NULL
);
1579 rxq
->queue
[i
] = NULL
;
1581 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1582 priv
->hw_params
.rx_buf_size
,
1583 PCI_DMA_FROMDEVICE
);
1584 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1586 /* Reclaim a command buffer only if this packet is a response
1587 * to a (driver-originated) command.
1588 * If the packet (e.g. Rx frame) originated from uCode,
1589 * there is no command buffer to reclaim.
1590 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1591 * but apparently a few don't get set; catch them here. */
1592 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1593 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1594 (pkt
->hdr
.cmd
!= REPLY_TX
);
1596 /* Based on type of command response or notification,
1597 * handle those that need handling via function in
1598 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1599 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1600 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1601 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1602 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1603 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1604 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1606 /* No handling needed */
1607 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1608 "r %d i %d No handler needed for %s, 0x%02x\n",
1609 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1614 /* Invoke any callbacks, transfer the skb to caller, and
1615 * fire off the (possibly) blocking iwl_send_cmd()
1616 * as we reclaim the driver command queue */
1617 if (rxb
&& rxb
->skb
)
1618 iwl_tx_cmd_complete(priv
, rxb
);
1620 IWL_WARN(priv
, "Claim null rxb?\n");
1623 /* For now we just don't re-use anything. We can tweak this
1624 * later to try and re-use notification packets and SKBs that
1625 * fail to Rx correctly */
1626 if (rxb
->skb
!= NULL
) {
1627 priv
->alloc_rxb_skb
--;
1628 dev_kfree_skb_any(rxb
->skb
);
1632 spin_lock_irqsave(&rxq
->lock
, flags
);
1633 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1634 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1635 i
= (i
+ 1) & RX_QUEUE_MASK
;
1636 /* If there are a lot of unused frames,
1637 * restock the Rx queue so ucode won't assert. */
1642 iwl3945_rx_queue_restock(priv
);
1648 /* Backtrack one entry */
1650 iwl3945_rx_queue_restock(priv
);
1653 /* call this function to flush any scheduled tasklet */
1654 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1656 /* wait to make sure we flush pending tasklet*/
1657 synchronize_irq(priv
->pci_dev
->irq
);
1658 tasklet_kill(&priv
->irq_tasklet
);
1661 static const char *desc_lookup(int i
)
1669 return "BAD_CHECKSUM";
1671 return "NMI_INTERRUPT";
1675 return "FATAL_ERROR";
1681 #define ERROR_START_OFFSET (1 * sizeof(u32))
1682 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1684 static void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1687 u32 desc
, time
, count
, base
, data1
;
1688 u32 blink1
, blink2
, ilink1
, ilink2
;
1690 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1692 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1693 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1698 count
= iwl_read_targ_mem(priv
, base
);
1700 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1701 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1702 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1703 priv
->status
, count
);
1706 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1707 "ilink1 nmiPC Line\n");
1708 for (i
= ERROR_START_OFFSET
;
1709 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1710 i
+= ERROR_ELEM_SIZE
) {
1711 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1713 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1715 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1717 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1719 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1721 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1723 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1726 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1727 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1728 ilink1
, ilink2
, data1
);
1733 #define EVENT_START_OFFSET (6 * sizeof(u32))
1736 * iwl3945_print_event_log - Dump error event log to syslog
1739 static void iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1740 u32 num_events
, u32 mode
)
1743 u32 base
; /* SRAM byte address of event log header */
1744 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1745 u32 ptr
; /* SRAM byte address of log data */
1746 u32 ev
, time
, data
; /* event log data */
1748 if (num_events
== 0)
1751 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1754 event_size
= 2 * sizeof(u32
);
1756 event_size
= 3 * sizeof(u32
);
1758 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1760 /* "time" is actually "data" for mode 0 (no timestamp).
1761 * place event id # at far right for easier visual parsing. */
1762 for (i
= 0; i
< num_events
; i
++) {
1763 ev
= iwl_read_targ_mem(priv
, ptr
);
1765 time
= iwl_read_targ_mem(priv
, ptr
);
1769 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1771 data
= iwl_read_targ_mem(priv
, ptr
);
1773 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n", time
, data
, ev
);
1778 static void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1780 u32 base
; /* SRAM byte address of event log header */
1781 u32 capacity
; /* event log capacity in # entries */
1782 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1783 u32 num_wraps
; /* # times uCode wrapped to top of log */
1784 u32 next_entry
; /* index of next entry to be written by uCode */
1785 u32 size
; /* # entries that we'll print */
1787 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1788 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1789 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1793 /* event log header */
1794 capacity
= iwl_read_targ_mem(priv
, base
);
1795 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1796 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1797 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1799 size
= num_wraps
? capacity
: next_entry
;
1801 /* bail out if nothing in log */
1803 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1807 IWL_ERR(priv
, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1810 /* if uCode has wrapped back to top of log, start at the oldest entry,
1811 * i.e the next one that uCode would fill. */
1813 iwl3945_print_event_log(priv
, next_entry
,
1814 capacity
- next_entry
, mode
);
1816 /* (then/else) start at top of log */
1817 iwl3945_print_event_log(priv
, 0, next_entry
, mode
);
1821 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1823 u32 inta
, handled
= 0;
1825 unsigned long flags
;
1826 #ifdef CONFIG_IWLWIFI_DEBUG
1830 spin_lock_irqsave(&priv
->lock
, flags
);
1832 /* Ack/clear/reset pending uCode interrupts.
1833 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1834 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1835 inta
= iwl_read32(priv
, CSR_INT
);
1836 iwl_write32(priv
, CSR_INT
, inta
);
1838 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1839 * Any new interrupts that happen after this, either while we're
1840 * in this tasklet, or later, will show up in next ISR/tasklet. */
1841 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1842 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1844 #ifdef CONFIG_IWLWIFI_DEBUG
1845 if (priv
->debug_level
& IWL_DL_ISR
) {
1846 /* just for debug */
1847 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1848 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1849 inta
, inta_mask
, inta_fh
);
1853 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1854 * atomic, make sure that inta covers all the interrupts that
1855 * we've discovered, even if FH interrupt came in just after
1856 * reading CSR_INT. */
1857 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1858 inta
|= CSR_INT_BIT_FH_RX
;
1859 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1860 inta
|= CSR_INT_BIT_FH_TX
;
1862 /* Now service all interrupt bits discovered above. */
1863 if (inta
& CSR_INT_BIT_HW_ERR
) {
1864 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1866 /* Tell the device to stop sending interrupts */
1867 iwl_disable_interrupts(priv
);
1869 priv
->isr_stats
.hw
++;
1870 iwl_irq_handle_error(priv
);
1872 handled
|= CSR_INT_BIT_HW_ERR
;
1874 spin_unlock_irqrestore(&priv
->lock
, flags
);
1879 #ifdef CONFIG_IWLWIFI_DEBUG
1880 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1881 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1882 if (inta
& CSR_INT_BIT_SCD
) {
1883 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1884 "the frame/frames.\n");
1885 priv
->isr_stats
.sch
++;
1888 /* Alive notification via Rx interrupt will do the real work */
1889 if (inta
& CSR_INT_BIT_ALIVE
) {
1890 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1891 priv
->isr_stats
.alive
++;
1895 /* Safely ignore these bits for debug checks below */
1896 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1898 /* Error detected by uCode */
1899 if (inta
& CSR_INT_BIT_SW_ERR
) {
1900 IWL_ERR(priv
, "Microcode SW error detected. "
1901 "Restarting 0x%X.\n", inta
);
1902 priv
->isr_stats
.sw
++;
1903 priv
->isr_stats
.sw_err
= inta
;
1904 iwl_irq_handle_error(priv
);
1905 handled
|= CSR_INT_BIT_SW_ERR
;
1908 /* uCode wakes up after power-down sleep */
1909 if (inta
& CSR_INT_BIT_WAKEUP
) {
1910 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1911 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1912 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1913 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1914 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1915 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1916 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1917 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1919 priv
->isr_stats
.wakeup
++;
1920 handled
|= CSR_INT_BIT_WAKEUP
;
1923 /* All uCode command responses, including Tx command responses,
1924 * Rx "responses" (frame-received notification), and other
1925 * notifications from uCode come through here*/
1926 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1927 iwl3945_rx_handle(priv
);
1928 priv
->isr_stats
.rx
++;
1929 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1932 if (inta
& CSR_INT_BIT_FH_TX
) {
1933 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1934 priv
->isr_stats
.tx
++;
1936 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1937 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1938 (FH39_SRVC_CHNL
), 0x0);
1939 handled
|= CSR_INT_BIT_FH_TX
;
1942 if (inta
& ~handled
) {
1943 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1944 priv
->isr_stats
.unhandled
++;
1947 if (inta
& ~CSR_INI_SET_MASK
) {
1948 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1949 inta
& ~CSR_INI_SET_MASK
);
1950 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1953 /* Re-enable all interrupts */
1954 /* only Re-enable if disabled by irq */
1955 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1956 iwl_enable_interrupts(priv
);
1958 #ifdef CONFIG_IWLWIFI_DEBUG
1959 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1960 inta
= iwl_read32(priv
, CSR_INT
);
1961 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1962 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1963 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1964 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1967 spin_unlock_irqrestore(&priv
->lock
, flags
);
1970 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1971 enum ieee80211_band band
,
1972 u8 is_active
, u8 n_probes
,
1973 struct iwl3945_scan_channel
*scan_ch
)
1975 const struct ieee80211_channel
*channels
= NULL
;
1976 const struct ieee80211_supported_band
*sband
;
1977 const struct iwl_channel_info
*ch_info
;
1978 u16 passive_dwell
= 0;
1979 u16 active_dwell
= 0;
1982 sband
= iwl_get_hw_mode(priv
, band
);
1986 channels
= sband
->channels
;
1988 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1989 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1991 if (passive_dwell
<= active_dwell
)
1992 passive_dwell
= active_dwell
+ 1;
1994 for (i
= 0, added
= 0; i
< sband
->n_channels
; i
++) {
1995 if (channels
[i
].flags
& IEEE80211_CHAN_DISABLED
)
1998 scan_ch
->channel
= channels
[i
].hw_value
;
2000 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
2001 if (!is_channel_valid(ch_info
)) {
2002 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
2007 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
2008 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
2009 /* If passive , set up for auto-switch
2010 * and use long active_dwell time.
2012 if (!is_active
|| is_channel_passive(ch_info
) ||
2013 (channels
[i
].flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
2014 scan_ch
->type
= 0; /* passive */
2015 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
2016 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
2018 scan_ch
->type
= 1; /* active */
2021 /* Set direct probe bits. These may be used both for active
2022 * scan channels (probes gets sent right away),
2023 * or for passive channels (probes get se sent only after
2024 * hearing clear Rx packet).*/
2025 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
2027 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
2029 /* uCode v1 does not allow setting direct probe bits on
2030 * passive channel. */
2031 if ((scan_ch
->type
& 1) && n_probes
)
2032 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
2035 /* Set txpower levels to defaults */
2036 scan_ch
->tpc
.dsp_atten
= 110;
2037 /* scan_pwr_info->tpc.dsp_atten; */
2039 /*scan_pwr_info->tpc.tx_gain; */
2040 if (band
== IEEE80211_BAND_5GHZ
)
2041 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
2043 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
2044 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2046 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2050 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
2052 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
2053 (scan_ch
->type
& 1) ?
2054 active_dwell
: passive_dwell
);
2060 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
2064 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
2065 struct ieee80211_rate
*rates
)
2069 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
2070 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
2071 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
2072 rates
[i
].hw_value_short
= i
;
2074 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
2076 * If CCK != 1M then set short preamble rate flag.
2078 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
2079 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
2084 /******************************************************************************
2086 * uCode download functions
2088 ******************************************************************************/
2090 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
2092 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2093 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2094 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2095 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2096 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2097 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2101 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2102 * looking at all data.
2104 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2111 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2113 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2114 IWL39_RTC_INST_LOWER_BOUND
);
2117 for (; len
> 0; len
-= sizeof(u32
), image
++) {
2118 /* read data comes through single port, auto-incr addr */
2119 /* NOTE: Use the debugless read so we don't flood kernel log
2120 * if IWL_DL_IO is set */
2121 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2122 if (val
!= le32_to_cpu(*image
)) {
2123 IWL_ERR(priv
, "uCode INST section is invalid at "
2124 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2125 save_len
- len
, val
, le32_to_cpu(*image
));
2135 IWL_DEBUG_INFO(priv
,
2136 "ucode image in INSTRUCTION memory is good\n");
2143 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2144 * using sample data 100 bytes apart. If these sample points are good,
2145 * it's a pretty good bet that everything between them is good, too.
2147 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2154 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2156 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2157 /* read data comes through single port, auto-incr addr */
2158 /* NOTE: Use the debugless read so we don't flood kernel log
2159 * if IWL_DL_IO is set */
2160 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2161 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2162 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2163 if (val
!= le32_to_cpu(*image
)) {
2164 #if 0 /* Enable this if you want to see details */
2165 IWL_ERR(priv
, "uCode INST section is invalid at "
2166 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2181 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2182 * and verify its contents
2184 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2191 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2192 len
= priv
->ucode_boot
.len
;
2193 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2195 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2199 /* Try initialize */
2200 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2201 len
= priv
->ucode_init
.len
;
2202 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2204 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2208 /* Try runtime/protocol */
2209 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2210 len
= priv
->ucode_code
.len
;
2211 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2213 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2217 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2219 /* Since nothing seems to match, show first several data entries in
2220 * instruction SRAM, so maybe visual inspection will give a clue.
2221 * Selection of bootstrap image (vs. other images) is arbitrary. */
2222 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2223 len
= priv
->ucode_boot
.len
;
2224 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2229 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2231 /* Remove all resets to allow NIC to operate */
2232 iwl_write32(priv
, CSR_RESET
, 0);
2236 * iwl3945_read_ucode - Read uCode images from disk file.
2238 * Copy into buffers for card to fetch via bus-mastering
2240 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2242 struct iwl_ucode
*ucode
;
2243 int ret
= -EINVAL
, index
;
2244 const struct firmware
*ucode_raw
;
2245 /* firmware file name contains uCode/driver compatibility version */
2246 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2247 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2248 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2252 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2254 /* Ask kernel firmware_class module to get the boot firmware off disk.
2255 * request_firmware() is synchronous, file is in memory on return. */
2256 for (index
= api_max
; index
>= api_min
; index
--) {
2257 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2258 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2260 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2267 if (index
< api_max
)
2268 IWL_ERR(priv
, "Loaded firmware %s, "
2269 "which is deprecated. "
2270 " Please use API v%u instead.\n",
2272 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2273 "(%zd bytes) from disk\n",
2274 buf
, ucode_raw
->size
);
2282 /* Make sure that we got at least our header! */
2283 if (ucode_raw
->size
< sizeof(*ucode
)) {
2284 IWL_ERR(priv
, "File size way too small!\n");
2289 /* Data from ucode file: header followed by uCode images */
2290 ucode
= (void *)ucode_raw
->data
;
2292 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2293 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2294 inst_size
= le32_to_cpu(ucode
->inst_size
);
2295 data_size
= le32_to_cpu(ucode
->data_size
);
2296 init_size
= le32_to_cpu(ucode
->init_size
);
2297 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
2298 boot_size
= le32_to_cpu(ucode
->boot_size
);
2300 /* api_ver should match the api version forming part of the
2301 * firmware filename ... but we don't check for that and only rely
2302 * on the API version read from firmware header from here on forward */
2304 if (api_ver
< api_min
|| api_ver
> api_max
) {
2305 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2306 "Driver supports v%u, firmware is v%u.\n",
2308 priv
->ucode_ver
= 0;
2312 if (api_ver
!= api_max
)
2313 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2314 "got %u. New firmware can be obtained "
2315 "from http://www.intellinuxwireless.org.\n",
2318 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2319 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2320 IWL_UCODE_MINOR(priv
->ucode_ver
),
2321 IWL_UCODE_API(priv
->ucode_ver
),
2322 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2324 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2326 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2328 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2330 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2332 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2334 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2338 /* Verify size of file vs. image size info in file's header */
2339 if (ucode_raw
->size
< sizeof(*ucode
) +
2340 inst_size
+ data_size
+ init_size
+
2341 init_data_size
+ boot_size
) {
2343 IWL_DEBUG_INFO(priv
, "uCode file size %zd too small\n",
2349 /* Verify that uCode images will fit in card's SRAM */
2350 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2351 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2357 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2358 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2363 if (init_size
> IWL39_MAX_INST_SIZE
) {
2364 IWL_DEBUG_INFO(priv
,
2365 "uCode init instr len %d too large to fit in\n",
2370 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2371 IWL_DEBUG_INFO(priv
,
2372 "uCode init data len %d too large to fit in\n",
2377 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2378 IWL_DEBUG_INFO(priv
,
2379 "uCode boot instr len %d too large to fit in\n",
2385 /* Allocate ucode buffers for card's bus-master loading ... */
2387 /* Runtime instructions and 2 copies of data:
2388 * 1) unmodified from disk
2389 * 2) backup cache for save/restore during power-downs */
2390 priv
->ucode_code
.len
= inst_size
;
2391 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2393 priv
->ucode_data
.len
= data_size
;
2394 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2396 priv
->ucode_data_backup
.len
= data_size
;
2397 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2399 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2400 !priv
->ucode_data_backup
.v_addr
)
2403 /* Initialization instructions and data */
2404 if (init_size
&& init_data_size
) {
2405 priv
->ucode_init
.len
= init_size
;
2406 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2408 priv
->ucode_init_data
.len
= init_data_size
;
2409 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2411 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2415 /* Bootstrap (instructions only, no data) */
2417 priv
->ucode_boot
.len
= boot_size
;
2418 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2420 if (!priv
->ucode_boot
.v_addr
)
2424 /* Copy images into buffers for card's bus-master reads ... */
2426 /* Runtime instructions (first block of data in file) */
2427 src
= &ucode
->data
[0];
2428 len
= priv
->ucode_code
.len
;
2429 IWL_DEBUG_INFO(priv
,
2430 "Copying (but not loading) uCode instr len %zd\n", len
);
2431 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2432 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2433 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2435 /* Runtime data (2nd block)
2436 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2437 src
= &ucode
->data
[inst_size
];
2438 len
= priv
->ucode_data
.len
;
2439 IWL_DEBUG_INFO(priv
,
2440 "Copying (but not loading) uCode data len %zd\n", len
);
2441 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2442 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2444 /* Initialization instructions (3rd block) */
2446 src
= &ucode
->data
[inst_size
+ data_size
];
2447 len
= priv
->ucode_init
.len
;
2448 IWL_DEBUG_INFO(priv
,
2449 "Copying (but not loading) init instr len %zd\n", len
);
2450 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2453 /* Initialization data (4th block) */
2454 if (init_data_size
) {
2455 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
2456 len
= priv
->ucode_init_data
.len
;
2457 IWL_DEBUG_INFO(priv
,
2458 "Copying (but not loading) init data len %zd\n", len
);
2459 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2462 /* Bootstrap instructions (5th block) */
2463 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
2464 len
= priv
->ucode_boot
.len
;
2465 IWL_DEBUG_INFO(priv
,
2466 "Copying (but not loading) boot instr len %zd\n", len
);
2467 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2469 /* We have our copies now, allow OS release its copies */
2470 release_firmware(ucode_raw
);
2474 IWL_ERR(priv
, "failed to allocate pci memory\n");
2476 iwl3945_dealloc_ucode_pci(priv
);
2479 release_firmware(ucode_raw
);
2487 * iwl3945_set_ucode_ptrs - Set uCode address location
2489 * Tell initialization uCode where to find runtime uCode.
2491 * BSM registers initially contain pointers to initialization uCode.
2492 * We need to replace them to load runtime uCode inst and data,
2493 * and to save runtime data when powering down.
2495 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2500 /* bits 31:0 for 3945 */
2501 pinst
= priv
->ucode_code
.p_addr
;
2502 pdata
= priv
->ucode_data_backup
.p_addr
;
2504 /* Tell bootstrap uCode where to find image to load */
2505 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2506 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2507 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2508 priv
->ucode_data
.len
);
2510 /* Inst byte count must be last to set up, bit 31 signals uCode
2511 * that all new ptr/size info is in place */
2512 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2513 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2515 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2521 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2523 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2525 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2527 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2529 /* Check alive response for "valid" sign from uCode */
2530 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2531 /* We had an error bringing up the hardware, so take it
2532 * all the way back down so we can try again */
2533 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2537 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2538 * This is a paranoid check, because we would not have gotten the
2539 * "initialize" alive if code weren't properly loaded. */
2540 if (iwl3945_verify_ucode(priv
)) {
2541 /* Runtime instruction load was bad;
2542 * take it all the way back down so we can try again */
2543 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2547 /* Send pointers to protocol/runtime uCode image ... init code will
2548 * load and launch runtime uCode, which will send us another "Alive"
2550 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2551 if (iwl3945_set_ucode_ptrs(priv
)) {
2552 /* Runtime instruction load won't happen;
2553 * take it all the way back down so we can try again */
2554 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2560 queue_work(priv
->workqueue
, &priv
->restart
);
2564 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2565 * from protocol/runtime uCode (initialization uCode's
2566 * Alive gets handled by iwl3945_init_alive_start()).
2568 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2570 int thermal_spin
= 0;
2573 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2575 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2576 /* We had an error bringing up the hardware, so take it
2577 * all the way back down so we can try again */
2578 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2582 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2583 * This is a paranoid check, because we would not have gotten the
2584 * "runtime" alive if code weren't properly loaded. */
2585 if (iwl3945_verify_ucode(priv
)) {
2586 /* Runtime instruction load was bad;
2587 * take it all the way back down so we can try again */
2588 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2592 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2594 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2595 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2598 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2599 /* if RFKILL is not on, then wait for thermal
2600 * sensor in adapter to kick in */
2601 while (iwl3945_hw_get_temperature(priv
) == 0) {
2607 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2610 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2612 /* After the ALIVE response, we can send commands to 3945 uCode */
2613 set_bit(STATUS_ALIVE
, &priv
->status
);
2615 if (iwl_is_rfkill(priv
))
2618 ieee80211_wake_queues(priv
->hw
);
2620 priv
->active_rate
= priv
->rates_mask
;
2621 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2623 iwl_power_update_mode(priv
, false);
2625 if (iwl_is_associated(priv
)) {
2626 struct iwl3945_rxon_cmd
*active_rxon
=
2627 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2629 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
2630 sizeof(priv
->staging_rxon
));
2631 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2633 /* Initialize our rx_config data */
2634 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2637 /* Configure Bluetooth device coexistence support */
2638 iwl_send_bt_config(priv
);
2640 /* Configure the adapter for unassociated operation */
2641 iwlcore_commit_rxon(priv
);
2643 iwl3945_reg_txpower_periodic(priv
);
2645 iwl3945_led_register(priv
);
2647 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2648 set_bit(STATUS_READY
, &priv
->status
);
2649 wake_up_interruptible(&priv
->wait_command_queue
);
2651 /* reassociate for ADHOC mode */
2652 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2653 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2656 iwl_mac_beacon_update(priv
->hw
, beacon
);
2659 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2660 iwl_set_mode(priv
, priv
->iw_mode
);
2665 queue_work(priv
->workqueue
, &priv
->restart
);
2668 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2670 static void __iwl3945_down(struct iwl_priv
*priv
)
2672 unsigned long flags
;
2673 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2674 struct ieee80211_conf
*conf
= NULL
;
2676 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2678 conf
= ieee80211_get_hw_conf(priv
->hw
);
2681 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2683 iwl3945_led_unregister(priv
);
2684 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2686 /* Unblock any waiting calls */
2687 wake_up_interruptible_all(&priv
->wait_command_queue
);
2689 /* Wipe out the EXIT_PENDING status bit if we are not actually
2690 * exiting the module */
2692 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2694 /* stop and reset the on-board processor */
2695 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2697 /* tell the device to stop sending interrupts */
2698 spin_lock_irqsave(&priv
->lock
, flags
);
2699 iwl_disable_interrupts(priv
);
2700 spin_unlock_irqrestore(&priv
->lock
, flags
);
2701 iwl_synchronize_irq(priv
);
2703 if (priv
->mac80211_registered
)
2704 ieee80211_stop_queues(priv
->hw
);
2706 /* If we have not previously called iwl3945_init() then
2707 * clear all bits but the RF Kill bits and return */
2708 if (!iwl_is_init(priv
)) {
2709 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2711 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
2713 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2714 STATUS_GEO_CONFIGURED
|
2715 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2716 STATUS_EXIT_PENDING
;
2720 /* ...otherwise clear out all the status bits but the RF Kill
2721 * bits and continue taking the NIC down. */
2722 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2724 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
2726 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2727 STATUS_GEO_CONFIGURED
|
2728 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2730 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2731 STATUS_EXIT_PENDING
;
2733 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2734 spin_lock_irqsave(&priv
->lock
, flags
);
2735 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2736 spin_unlock_irqrestore(&priv
->lock
, flags
);
2738 iwl3945_hw_txq_ctx_stop(priv
);
2739 iwl3945_hw_rxq_stop(priv
);
2741 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
2742 APMG_CLK_VAL_DMA_CLK_RQT
);
2747 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2749 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2752 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2754 if (priv
->ibss_beacon
)
2755 dev_kfree_skb(priv
->ibss_beacon
);
2756 priv
->ibss_beacon
= NULL
;
2758 /* clear out any free frames */
2759 iwl3945_clear_free_frames(priv
);
2762 static void iwl3945_down(struct iwl_priv
*priv
)
2764 mutex_lock(&priv
->mutex
);
2765 __iwl3945_down(priv
);
2766 mutex_unlock(&priv
->mutex
);
2768 iwl3945_cancel_deferred_work(priv
);
2771 #define MAX_HW_RESTARTS 5
2773 static int __iwl3945_up(struct iwl_priv
*priv
)
2777 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2778 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2782 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
2783 IWL_WARN(priv
, "Radio disabled by SW RF kill (module "
2788 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2789 IWL_ERR(priv
, "ucode not available for device bring up\n");
2793 /* If platform's RF_KILL switch is NOT set to KILL */
2794 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2795 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2796 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2798 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2799 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2803 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2805 rc
= iwl3945_hw_nic_init(priv
);
2807 IWL_ERR(priv
, "Unable to int nic\n");
2811 /* make sure rfkill handshake bits are cleared */
2812 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2813 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2814 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2816 /* clear (again), then enable host interrupts */
2817 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2818 iwl_enable_interrupts(priv
);
2820 /* really make sure rfkill handshake bits are cleared */
2821 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2822 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2824 /* Copy original ucode data image from disk into backup cache.
2825 * This will be used to initialize the on-board processor's
2826 * data SRAM for a clean start when the runtime program first loads. */
2827 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2828 priv
->ucode_data
.len
);
2830 /* We return success when we resume from suspend and rf_kill is on. */
2831 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2834 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2836 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2838 /* load bootstrap state machine,
2839 * load bootstrap program into processor's memory,
2840 * prepare to load the "initialize" uCode */
2841 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2845 "Unable to set up bootstrap uCode: %d\n", rc
);
2849 /* start card; "initialize" will load runtime ucode */
2850 iwl3945_nic_start(priv
);
2852 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2857 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2858 __iwl3945_down(priv
);
2859 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2861 /* tried to restart and config the device for as long as our
2862 * patience could withstand */
2863 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2868 /*****************************************************************************
2870 * Workqueue callbacks
2872 *****************************************************************************/
2874 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2876 struct iwl_priv
*priv
=
2877 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2879 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2882 mutex_lock(&priv
->mutex
);
2883 iwl3945_init_alive_start(priv
);
2884 mutex_unlock(&priv
->mutex
);
2887 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2889 struct iwl_priv
*priv
=
2890 container_of(data
, struct iwl_priv
, alive_start
.work
);
2892 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2895 mutex_lock(&priv
->mutex
);
2896 iwl3945_alive_start(priv
);
2897 mutex_unlock(&priv
->mutex
);
2900 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2902 struct iwl_priv
*priv
=
2903 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2904 unsigned long status
= priv
->status
;
2906 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2907 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2909 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2911 if (test_bit(STATUS_RF_KILL_HW
, &status
) != test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2912 queue_work(priv
->workqueue
, &priv
->rf_kill
);
2914 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2915 round_jiffies_relative(2 * HZ
));
2919 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2920 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2922 struct iwl_priv
*priv
=
2923 container_of(data
, struct iwl_priv
, request_scan
);
2924 struct iwl_host_cmd cmd
= {
2925 .id
= REPLY_SCAN_CMD
,
2926 .len
= sizeof(struct iwl3945_scan_cmd
),
2927 .meta
.flags
= CMD_SIZE_HUGE
,
2930 struct iwl3945_scan_cmd
*scan
;
2931 struct ieee80211_conf
*conf
= NULL
;
2933 enum ieee80211_band band
;
2934 bool is_active
= false;
2936 conf
= ieee80211_get_hw_conf(priv
->hw
);
2938 mutex_lock(&priv
->mutex
);
2940 if (!iwl_is_ready(priv
)) {
2941 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2945 /* Make sure the scan wasn't canceled before this queued work
2946 * was given the chance to run... */
2947 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2950 /* This should never be called or scheduled if there is currently
2951 * a scan active in the hardware. */
2952 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2953 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2954 "Ignoring second request.\n");
2959 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2960 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2964 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2966 "Scan request while abort pending. Queuing.\n");
2970 if (iwl_is_rfkill(priv
)) {
2971 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2975 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2977 "Scan request while uninitialized. Queuing.\n");
2981 if (!priv
->scan_bands
) {
2982 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2987 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2988 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2995 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2997 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2998 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
3000 if (iwl_is_associated(priv
)) {
3003 u32 suspend_time
= 100;
3004 u32 scan_suspend_time
= 100;
3005 unsigned long flags
;
3007 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
3009 spin_lock_irqsave(&priv
->lock
, flags
);
3010 interval
= priv
->beacon_int
;
3011 spin_unlock_irqrestore(&priv
->lock
, flags
);
3013 scan
->suspend_time
= 0;
3014 scan
->max_out_time
= cpu_to_le32(200 * 1024);
3016 interval
= suspend_time
;
3018 * suspend time format:
3019 * 0-19: beacon interval in usec (time before exec.)
3021 * 24-31: number of beacons (suspend between channels)
3024 extra
= (suspend_time
/ interval
) << 24;
3025 scan_suspend_time
= 0xFF0FFFFF &
3026 (extra
| ((suspend_time
% interval
) * 1024));
3028 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
3029 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
3030 scan_suspend_time
, interval
);
3033 if (priv
->scan_request
->n_ssids
) {
3035 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
3036 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
3037 /* always does wildcard anyway */
3038 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
3040 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
3041 scan
->direct_scan
[p
].len
=
3042 priv
->scan_request
->ssids
[i
].ssid_len
;
3043 memcpy(scan
->direct_scan
[p
].ssid
,
3044 priv
->scan_request
->ssids
[i
].ssid
,
3045 priv
->scan_request
->ssids
[i
].ssid_len
);
3051 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
3053 /* We don't build a direct scan probe request; the uCode will do
3054 * that based on the direct_mask added to each channel entry */
3055 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
3056 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
3057 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
3059 /* flags + rate selection */
3061 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
3062 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
3063 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
3064 scan
->good_CRC_th
= 0;
3065 band
= IEEE80211_BAND_2GHZ
;
3066 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
3067 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
3069 * If active scaning is requested but a certain channel
3070 * is marked passive, we can do active scanning if we
3071 * detect transmissions.
3073 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
3074 band
= IEEE80211_BAND_5GHZ
;
3076 IWL_WARN(priv
, "Invalid scan band count\n");
3080 scan
->tx_cmd
.len
= cpu_to_le16(
3081 iwl_fill_probe_req(priv
,
3082 (struct ieee80211_mgmt
*)scan
->data
,
3083 priv
->scan_request
->ie
,
3084 priv
->scan_request
->ie_len
,
3085 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
3087 /* select Rx antennas */
3088 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
3090 if (iwl_is_monitor_mode(priv
))
3091 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
3093 scan
->channel_count
=
3094 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
3095 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
3097 if (scan
->channel_count
== 0) {
3098 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
3102 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
3103 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
3105 scan
->len
= cpu_to_le16(cmd
.len
);
3107 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3108 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3112 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
3113 IWL_SCAN_CHECK_WATCHDOG
);
3115 mutex_unlock(&priv
->mutex
);
3119 /* can not perform scan make sure we clear scanning
3120 * bits from status so next scan request can be performed.
3121 * if we dont clear scanning status bit here all next scan
3124 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3125 clear_bit(STATUS_SCANNING
, &priv
->status
);
3127 /* inform mac80211 scan aborted */
3128 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3129 mutex_unlock(&priv
->mutex
);
3132 static void iwl3945_bg_up(struct work_struct
*data
)
3134 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
3136 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3139 mutex_lock(&priv
->mutex
);
3141 mutex_unlock(&priv
->mutex
);
3142 iwl_rfkill_set_hw_state(priv
);
3145 static void iwl3945_bg_restart(struct work_struct
*data
)
3147 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3149 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3152 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3153 mutex_lock(&priv
->mutex
);
3156 mutex_unlock(&priv
->mutex
);
3158 ieee80211_restart_hw(priv
->hw
);
3161 queue_work(priv
->workqueue
, &priv
->up
);
3165 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3167 struct iwl_priv
*priv
=
3168 container_of(data
, struct iwl_priv
, rx_replenish
);
3170 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3173 mutex_lock(&priv
->mutex
);
3174 iwl3945_rx_replenish(priv
);
3175 mutex_unlock(&priv
->mutex
);
3178 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3180 void iwl3945_post_associate(struct iwl_priv
*priv
)
3183 struct ieee80211_conf
*conf
= NULL
;
3185 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3186 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3191 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3192 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3194 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3197 if (!priv
->vif
|| !priv
->is_open
)
3200 iwl_scan_cancel_timeout(priv
, 200);
3202 conf
= ieee80211_get_hw_conf(priv
->hw
);
3204 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3205 iwlcore_commit_rxon(priv
);
3207 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3208 iwl3945_setup_rxon_timing(priv
);
3209 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3210 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3212 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3213 "Attempting to continue.\n");
3215 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3217 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3219 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3220 priv
->assoc_id
, priv
->beacon_int
);
3222 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3223 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3225 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3227 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3228 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3229 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3231 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3233 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3234 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3238 iwlcore_commit_rxon(priv
);
3240 switch (priv
->iw_mode
) {
3241 case NL80211_IFTYPE_STATION
:
3242 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3245 case NL80211_IFTYPE_ADHOC
:
3248 priv
->cfg
->ops
->smgmt
->add_station(priv
, priv
->bssid
, 0, 0, NULL
);
3249 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3250 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3251 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3253 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3254 iwl3945_send_beacon_cmd(priv
);
3259 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3260 __func__
, priv
->iw_mode
);
3264 iwl_activate_qos(priv
, 0);
3266 /* we have just associated, don't start scan too early */
3267 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3270 /*****************************************************************************
3272 * mac80211 entry point functions
3274 *****************************************************************************/
3276 #define UCODE_READY_TIMEOUT (2 * HZ)
3278 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3280 struct iwl_priv
*priv
= hw
->priv
;
3283 IWL_DEBUG_MAC80211(priv
, "enter\n");
3285 /* we should be verifying the device is ready to be opened */
3286 mutex_lock(&priv
->mutex
);
3288 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
3289 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3290 * ucode filename and max sizes are card-specific. */
3292 if (!priv
->ucode_code
.len
) {
3293 ret
= iwl3945_read_ucode(priv
);
3295 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3296 mutex_unlock(&priv
->mutex
);
3297 goto out_release_irq
;
3301 ret
= __iwl3945_up(priv
);
3303 mutex_unlock(&priv
->mutex
);
3305 iwl_rfkill_set_hw_state(priv
);
3308 goto out_release_irq
;
3310 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3312 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3313 * mac80211 will not be run successfully. */
3314 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3315 test_bit(STATUS_READY
, &priv
->status
),
3316 UCODE_READY_TIMEOUT
);
3318 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3320 "Wait for START_ALIVE timeout after %dms.\n",
3321 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3323 goto out_release_irq
;
3327 /* ucode is running and will send rfkill notifications,
3328 * no need to poll the killswitch state anymore */
3329 cancel_delayed_work(&priv
->rfkill_poll
);
3332 IWL_DEBUG_MAC80211(priv
, "leave\n");
3337 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3341 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3343 struct iwl_priv
*priv
= hw
->priv
;
3345 IWL_DEBUG_MAC80211(priv
, "enter\n");
3347 if (!priv
->is_open
) {
3348 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3354 if (iwl_is_ready_rf(priv
)) {
3355 /* stop mac, cancel any scan request and clear
3356 * RXON_FILTER_ASSOC_MSK BIT
3358 mutex_lock(&priv
->mutex
);
3359 iwl_scan_cancel_timeout(priv
, 100);
3360 mutex_unlock(&priv
->mutex
);
3365 flush_workqueue(priv
->workqueue
);
3367 /* start polling the killswitch state again */
3368 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3369 round_jiffies_relative(2 * HZ
));
3371 IWL_DEBUG_MAC80211(priv
, "leave\n");
3374 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3376 struct iwl_priv
*priv
= hw
->priv
;
3378 IWL_DEBUG_MAC80211(priv
, "enter\n");
3380 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3381 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3383 if (iwl3945_tx_skb(priv
, skb
))
3384 dev_kfree_skb_any(skb
);
3386 IWL_DEBUG_MAC80211(priv
, "leave\n");
3387 return NETDEV_TX_OK
;
3390 void iwl3945_config_ap(struct iwl_priv
*priv
)
3394 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3397 /* The following should be done only at AP bring up */
3398 if (!(iwl_is_associated(priv
))) {
3400 /* RXON - unassoc (to set timing command) */
3401 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3402 iwlcore_commit_rxon(priv
);
3405 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3406 iwl3945_setup_rxon_timing(priv
);
3407 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3408 sizeof(priv
->rxon_timing
),
3409 &priv
->rxon_timing
);
3411 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3412 "Attempting to continue.\n");
3414 /* FIXME: what should be the assoc_id for AP? */
3415 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3416 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3417 priv
->staging_rxon
.flags
|=
3418 RXON_FLG_SHORT_PREAMBLE_MSK
;
3420 priv
->staging_rxon
.flags
&=
3421 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3423 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3424 if (priv
->assoc_capability
&
3425 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3426 priv
->staging_rxon
.flags
|=
3427 RXON_FLG_SHORT_SLOT_MSK
;
3429 priv
->staging_rxon
.flags
&=
3430 ~RXON_FLG_SHORT_SLOT_MSK
;
3432 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3433 priv
->staging_rxon
.flags
&=
3434 ~RXON_FLG_SHORT_SLOT_MSK
;
3436 /* restore RXON assoc */
3437 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3438 iwlcore_commit_rxon(priv
);
3439 priv
->cfg
->ops
->smgmt
->add_station(priv
, iwl_bcast_addr
, 0, 0, NULL
);
3441 iwl3945_send_beacon_cmd(priv
);
3443 /* FIXME - we need to add code here to detect a totally new
3444 * configuration, reset the AP, unassoc, rxon timing, assoc,
3445 * clear sta table, add BCAST sta... */
3448 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3449 struct ieee80211_vif
*vif
,
3450 struct ieee80211_sta
*sta
,
3451 struct ieee80211_key_conf
*key
)
3453 struct iwl_priv
*priv
= hw
->priv
;
3456 u8 sta_id
= IWL_INVALID_STATION
;
3459 IWL_DEBUG_MAC80211(priv
, "enter\n");
3461 if (iwl3945_mod_params
.sw_crypto
) {
3462 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3466 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3467 static_key
= !iwl_is_associated(priv
);
3470 sta_id
= priv
->cfg
->ops
->smgmt
->find_station(priv
, addr
);
3471 if (sta_id
== IWL_INVALID_STATION
) {
3472 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3478 mutex_lock(&priv
->mutex
);
3479 iwl_scan_cancel_timeout(priv
, 100);
3480 mutex_unlock(&priv
->mutex
);
3485 ret
= iwl3945_set_static_key(priv
, key
);
3487 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3488 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3492 ret
= iwl3945_remove_static_key(priv
);
3494 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3495 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3501 IWL_DEBUG_MAC80211(priv
, "leave\n");
3506 /*****************************************************************************
3510 *****************************************************************************/
3512 #ifdef CONFIG_IWLWIFI_DEBUG
3515 * The following adds a new attribute to the sysfs representation
3516 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3517 * used for controlling the debug level.
3519 * See the level definitions in iwl for details.
3521 static ssize_t
show_debug_level(struct device
*d
,
3522 struct device_attribute
*attr
, char *buf
)
3524 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3526 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
3528 static ssize_t
store_debug_level(struct device
*d
,
3529 struct device_attribute
*attr
,
3530 const char *buf
, size_t count
)
3532 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3536 ret
= strict_strtoul(buf
, 0, &val
);
3538 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3540 priv
->debug_level
= val
;
3542 return strnlen(buf
, count
);
3545 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3546 show_debug_level
, store_debug_level
);
3548 #endif /* CONFIG_IWLWIFI_DEBUG */
3550 static ssize_t
show_temperature(struct device
*d
,
3551 struct device_attribute
*attr
, char *buf
)
3553 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3555 if (!iwl_is_alive(priv
))
3558 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3561 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3563 static ssize_t
show_tx_power(struct device
*d
,
3564 struct device_attribute
*attr
, char *buf
)
3566 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3567 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3570 static ssize_t
store_tx_power(struct device
*d
,
3571 struct device_attribute
*attr
,
3572 const char *buf
, size_t count
)
3574 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3575 char *p
= (char *)buf
;
3578 val
= simple_strtoul(p
, &p
, 10);
3580 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3582 iwl3945_hw_reg_set_txpower(priv
, val
);
3587 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3589 static ssize_t
show_flags(struct device
*d
,
3590 struct device_attribute
*attr
, char *buf
)
3592 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3594 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3597 static ssize_t
store_flags(struct device
*d
,
3598 struct device_attribute
*attr
,
3599 const char *buf
, size_t count
)
3601 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3602 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3604 mutex_lock(&priv
->mutex
);
3605 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3606 /* Cancel any currently running scans... */
3607 if (iwl_scan_cancel_timeout(priv
, 100))
3608 IWL_WARN(priv
, "Could not cancel scan.\n");
3610 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3612 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3613 iwlcore_commit_rxon(priv
);
3616 mutex_unlock(&priv
->mutex
);
3621 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3623 static ssize_t
show_filter_flags(struct device
*d
,
3624 struct device_attribute
*attr
, char *buf
)
3626 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3628 return sprintf(buf
, "0x%04X\n",
3629 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3632 static ssize_t
store_filter_flags(struct device
*d
,
3633 struct device_attribute
*attr
,
3634 const char *buf
, size_t count
)
3636 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3637 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3639 mutex_lock(&priv
->mutex
);
3640 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3641 /* Cancel any currently running scans... */
3642 if (iwl_scan_cancel_timeout(priv
, 100))
3643 IWL_WARN(priv
, "Could not cancel scan.\n");
3645 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3646 "0x%04X\n", filter_flags
);
3647 priv
->staging_rxon
.filter_flags
=
3648 cpu_to_le32(filter_flags
);
3649 iwlcore_commit_rxon(priv
);
3652 mutex_unlock(&priv
->mutex
);
3657 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3658 store_filter_flags
);
3660 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3662 static ssize_t
show_measurement(struct device
*d
,
3663 struct device_attribute
*attr
, char *buf
)
3665 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3666 struct iwl_spectrum_notification measure_report
;
3667 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3668 u8
*data
= (u8
*)&measure_report
;
3669 unsigned long flags
;
3671 spin_lock_irqsave(&priv
->lock
, flags
);
3672 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3673 spin_unlock_irqrestore(&priv
->lock
, flags
);
3676 memcpy(&measure_report
, &priv
->measure_report
, size
);
3677 priv
->measurement_status
= 0;
3678 spin_unlock_irqrestore(&priv
->lock
, flags
);
3680 while (size
&& (PAGE_SIZE
- len
)) {
3681 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3682 PAGE_SIZE
- len
, 1);
3684 if (PAGE_SIZE
- len
)
3688 size
-= min(size
, 16U);
3694 static ssize_t
store_measurement(struct device
*d
,
3695 struct device_attribute
*attr
,
3696 const char *buf
, size_t count
)
3698 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3699 struct ieee80211_measurement_params params
= {
3700 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3701 .start_time
= cpu_to_le64(priv
->last_tsf
),
3702 .duration
= cpu_to_le16(1),
3704 u8 type
= IWL_MEASURE_BASIC
;
3710 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3711 channel
= simple_strtoul(p
, NULL
, 0);
3713 params
.channel
= channel
;
3716 while (*p
&& *p
!= ' ')
3719 type
= simple_strtoul(p
+ 1, NULL
, 0);
3722 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3723 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3724 iwl3945_get_measurement(priv
, ¶ms
, type
);
3729 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3730 show_measurement
, store_measurement
);
3731 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3733 static ssize_t
store_retry_rate(struct device
*d
,
3734 struct device_attribute
*attr
,
3735 const char *buf
, size_t count
)
3737 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3739 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3740 if (priv
->retry_rate
<= 0)
3741 priv
->retry_rate
= 1;
3746 static ssize_t
show_retry_rate(struct device
*d
,
3747 struct device_attribute
*attr
, char *buf
)
3749 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3750 return sprintf(buf
, "%d", priv
->retry_rate
);
3753 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3757 static ssize_t
store_power_level(struct device
*d
,
3758 struct device_attribute
*attr
,
3759 const char *buf
, size_t count
)
3761 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3766 mutex_lock(&priv
->mutex
);
3768 ret
= strict_strtoul(buf
, 10, &mode
);
3772 ret
= iwl_power_set_user_mode(priv
, mode
);
3774 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3780 mutex_unlock(&priv
->mutex
);
3784 static ssize_t
show_power_level(struct device
*d
,
3785 struct device_attribute
*attr
, char *buf
)
3787 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3788 int mode
= priv
->power_data
.user_power_setting
;
3789 int level
= priv
->power_data
.power_mode
;
3792 p
+= sprintf(p
, "INDEX:%d\t", level
);
3793 p
+= sprintf(p
, "USER:%d\n", mode
);
3797 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
,
3798 show_power_level
, store_power_level
);
3800 #define MAX_WX_STRING 80
3802 /* Values are in microsecond */
3803 static const s32 timeout_duration
[] = {
3810 static const s32 period_duration
[] = {
3818 static ssize_t
show_channels(struct device
*d
,
3819 struct device_attribute
*attr
, char *buf
)
3821 /* all this shit doesn't belong into sysfs anyway */
3825 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3827 static ssize_t
show_statistics(struct device
*d
,
3828 struct device_attribute
*attr
, char *buf
)
3830 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3831 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3832 u32 len
= 0, ofs
= 0;
3833 u8
*data
= (u8
*)&priv
->statistics_39
;
3836 if (!iwl_is_alive(priv
))
3839 mutex_lock(&priv
->mutex
);
3840 rc
= iwl_send_statistics_request(priv
, 0);
3841 mutex_unlock(&priv
->mutex
);
3845 "Error sending statistics request: 0x%08X\n", rc
);
3849 while (size
&& (PAGE_SIZE
- len
)) {
3850 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3851 PAGE_SIZE
- len
, 1);
3853 if (PAGE_SIZE
- len
)
3857 size
-= min(size
, 16U);
3863 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3865 static ssize_t
show_antenna(struct device
*d
,
3866 struct device_attribute
*attr
, char *buf
)
3868 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3870 if (!iwl_is_alive(priv
))
3873 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3876 static ssize_t
store_antenna(struct device
*d
,
3877 struct device_attribute
*attr
,
3878 const char *buf
, size_t count
)
3880 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3886 if (sscanf(buf
, "%1i", &ant
) != 1) {
3887 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3891 if ((ant
>= 0) && (ant
<= 2)) {
3892 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3893 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3895 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3901 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3903 static ssize_t
show_status(struct device
*d
,
3904 struct device_attribute
*attr
, char *buf
)
3906 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3907 if (!iwl_is_alive(priv
))
3909 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3912 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3914 static ssize_t
dump_error_log(struct device
*d
,
3915 struct device_attribute
*attr
,
3916 const char *buf
, size_t count
)
3918 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3919 char *p
= (char *)buf
;
3922 iwl3945_dump_nic_error_log(priv
);
3924 return strnlen(buf
, count
);
3927 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3929 static ssize_t
dump_event_log(struct device
*d
,
3930 struct device_attribute
*attr
,
3931 const char *buf
, size_t count
)
3933 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3934 char *p
= (char *)buf
;
3937 iwl3945_dump_nic_event_log(priv
);
3939 return strnlen(buf
, count
);
3942 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
3944 /*****************************************************************************
3946 * driver setup and tear down
3948 *****************************************************************************/
3950 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3952 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3954 init_waitqueue_head(&priv
->wait_command_queue
);
3956 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
3957 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3958 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3959 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
3960 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3961 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3962 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3963 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3964 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3965 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3966 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3967 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3969 iwl3945_hw_setup_deferred_work(priv
);
3971 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3972 iwl3945_irq_tasklet
, (unsigned long)priv
);
3975 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3977 iwl3945_hw_cancel_deferred_work(priv
);
3979 cancel_delayed_work_sync(&priv
->init_alive_start
);
3980 cancel_delayed_work(&priv
->scan_check
);
3981 cancel_delayed_work(&priv
->alive_start
);
3982 cancel_work_sync(&priv
->beacon_update
);
3985 static struct attribute
*iwl3945_sysfs_entries
[] = {
3986 &dev_attr_antenna
.attr
,
3987 &dev_attr_channels
.attr
,
3988 &dev_attr_dump_errors
.attr
,
3989 &dev_attr_dump_events
.attr
,
3990 &dev_attr_flags
.attr
,
3991 &dev_attr_filter_flags
.attr
,
3992 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3993 &dev_attr_measurement
.attr
,
3995 &dev_attr_power_level
.attr
,
3996 &dev_attr_retry_rate
.attr
,
3997 &dev_attr_statistics
.attr
,
3998 &dev_attr_status
.attr
,
3999 &dev_attr_temperature
.attr
,
4000 &dev_attr_tx_power
.attr
,
4001 #ifdef CONFIG_IWLWIFI_DEBUG
4002 &dev_attr_debug_level
.attr
,
4007 static struct attribute_group iwl3945_attribute_group
= {
4008 .name
= NULL
, /* put in device directory */
4009 .attrs
= iwl3945_sysfs_entries
,
4012 static struct ieee80211_ops iwl3945_hw_ops
= {
4013 .tx
= iwl3945_mac_tx
,
4014 .start
= iwl3945_mac_start
,
4015 .stop
= iwl3945_mac_stop
,
4016 .add_interface
= iwl_mac_add_interface
,
4017 .remove_interface
= iwl_mac_remove_interface
,
4018 .config
= iwl_mac_config
,
4019 .configure_filter
= iwl_configure_filter
,
4020 .set_key
= iwl3945_mac_set_key
,
4021 .get_tx_stats
= iwl_mac_get_tx_stats
,
4022 .conf_tx
= iwl_mac_conf_tx
,
4023 .reset_tsf
= iwl_mac_reset_tsf
,
4024 .bss_info_changed
= iwl_bss_info_changed
,
4025 .hw_scan
= iwl_mac_hw_scan
4028 static int iwl3945_init_drv(struct iwl_priv
*priv
)
4031 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4033 priv
->retry_rate
= 1;
4034 priv
->ibss_beacon
= NULL
;
4036 spin_lock_init(&priv
->lock
);
4037 spin_lock_init(&priv
->sta_lock
);
4038 spin_lock_init(&priv
->hcmd_lock
);
4040 INIT_LIST_HEAD(&priv
->free_frames
);
4042 mutex_init(&priv
->mutex
);
4044 /* Clear the driver's (not device's) station table */
4045 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
4047 priv
->data_retry_limit
= -1;
4048 priv
->ieee_channels
= NULL
;
4049 priv
->ieee_rates
= NULL
;
4050 priv
->band
= IEEE80211_BAND_2GHZ
;
4052 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
4054 iwl_reset_qos(priv
);
4056 priv
->qos_data
.qos_active
= 0;
4057 priv
->qos_data
.qos_cap
.val
= 0;
4059 priv
->rates_mask
= IWL_RATES_MASK
;
4060 /* If power management is turned on, default to CAM mode */
4061 priv
->power_mode
= IWL_POWER_MODE_CAM
;
4062 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
4064 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
4065 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
4070 ret
= iwl_init_channel_map(priv
);
4072 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
4076 /* Set up txpower settings in driver for all channels */
4077 if (iwl3945_txpower_set_from_eeprom(priv
)) {
4079 goto err_free_channel_map
;
4082 ret
= iwlcore_init_geos(priv
);
4084 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
4085 goto err_free_channel_map
;
4087 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
4091 err_free_channel_map
:
4092 iwl_free_channel_map(priv
);
4097 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
4100 struct ieee80211_hw
*hw
= priv
->hw
;
4102 hw
->rate_control_algorithm
= "iwl-3945-rs";
4103 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
4105 /* Tell mac80211 our characteristics */
4106 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
4107 IEEE80211_HW_NOISE_DBM
|
4108 IEEE80211_HW_SPECTRUM_MGMT
;
4110 hw
->wiphy
->interface_modes
=
4111 BIT(NL80211_IFTYPE_STATION
) |
4112 BIT(NL80211_IFTYPE_ADHOC
);
4114 hw
->wiphy
->custom_regulatory
= true;
4116 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
4117 /* we create the 802.11 header and a zero-length SSID element */
4118 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
4120 /* Default value; 4 EDCA QOS priorities */
4123 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
4124 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
4125 &priv
->bands
[IEEE80211_BAND_2GHZ
];
4127 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
4128 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
4129 &priv
->bands
[IEEE80211_BAND_5GHZ
];
4131 ret
= ieee80211_register_hw(priv
->hw
);
4133 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
4136 priv
->mac80211_registered
= 1;
4141 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4144 struct iwl_priv
*priv
;
4145 struct ieee80211_hw
*hw
;
4146 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
4147 struct iwl3945_eeprom
*eeprom
;
4148 unsigned long flags
;
4150 /***********************
4151 * 1. Allocating HW data
4152 * ********************/
4154 /* mac80211 allocates memory for this device instance, including
4155 * space for this driver's private structure */
4156 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
4158 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
4163 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
4165 if ((iwl3945_mod_params
.num_of_queues
> IWL39_MAX_NUM_QUEUES
) ||
4166 (iwl3945_mod_params
.num_of_queues
< IWL_MIN_NUM_QUEUES
)) {
4168 "invalid queues_num, should be between %d and %d\n",
4169 IWL_MIN_NUM_QUEUES
, IWL39_MAX_NUM_QUEUES
);
4171 goto out_ieee80211_free_hw
;
4175 * Disabling hardware scan means that mac80211 will perform scans
4176 * "the hard way", rather than using device's scan.
4178 if (iwl3945_mod_params
.disable_hw_scan
) {
4179 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
4180 iwl3945_hw_ops
.hw_scan
= NULL
;
4184 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
4186 priv
->pci_dev
= pdev
;
4188 #ifdef CONFIG_IWLWIFI_DEBUG
4189 priv
->debug_level
= iwl3945_mod_params
.debug
;
4190 atomic_set(&priv
->restrict_refcnt
, 0);
4193 /***************************
4194 * 2. Initializing PCI bus
4195 * *************************/
4196 if (pci_enable_device(pdev
)) {
4198 goto out_ieee80211_free_hw
;
4201 pci_set_master(pdev
);
4203 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4205 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4207 IWL_WARN(priv
, "No suitable DMA available.\n");
4208 goto out_pci_disable_device
;
4211 pci_set_drvdata(pdev
, priv
);
4212 err
= pci_request_regions(pdev
, DRV_NAME
);
4214 goto out_pci_disable_device
;
4216 /***********************
4217 * 3. Read REV Register
4218 * ********************/
4219 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4220 if (!priv
->hw_base
) {
4222 goto out_pci_release_regions
;
4225 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4226 (unsigned long long) pci_resource_len(pdev
, 0));
4227 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4229 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4230 * PCI Tx retries from interfering with C3 CPU state */
4231 pci_write_config_byte(pdev
, 0x41, 0x00);
4233 /* this spin lock will be used in apm_ops.init and EEPROM access
4234 * we should init now
4236 spin_lock_init(&priv
->reg_lock
);
4239 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
4241 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
4245 /***********************
4247 * ********************/
4249 /* Read the EEPROM */
4250 err
= iwl_eeprom_init(priv
);
4252 IWL_ERR(priv
, "Unable to init EEPROM\n");
4255 /* MAC Address location in EEPROM same for 3945/4965 */
4256 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4257 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4258 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4259 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4261 /***********************
4262 * 5. Setup HW Constants
4263 * ********************/
4264 /* Device-specific setup */
4265 if (iwl3945_hw_set_hw_params(priv
)) {
4266 IWL_ERR(priv
, "failed to set hw settings\n");
4267 goto out_eeprom_free
;
4270 /***********************
4272 * ********************/
4274 err
= iwl3945_init_drv(priv
);
4276 IWL_ERR(priv
, "initializing driver failed\n");
4277 goto out_unset_hw_params
;
4280 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4283 /***********************
4285 * ********************/
4287 spin_lock_irqsave(&priv
->lock
, flags
);
4288 iwl_disable_interrupts(priv
);
4289 spin_unlock_irqrestore(&priv
->lock
, flags
);
4291 pci_enable_msi(priv
->pci_dev
);
4293 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4294 IRQF_SHARED
, DRV_NAME
, priv
);
4296 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4297 goto out_disable_msi
;
4300 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4302 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4303 goto out_release_irq
;
4306 iwl_set_rxon_channel(priv
,
4307 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4308 iwl3945_setup_deferred_work(priv
);
4309 iwl3945_setup_rx_handlers(priv
);
4311 /*********************************
4312 * 8. Setup and Register mac80211
4313 * *******************************/
4315 iwl_enable_interrupts(priv
);
4317 err
= iwl3945_setup_mac(priv
);
4319 goto out_remove_sysfs
;
4321 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4323 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4325 err
= iwl_rfkill_init(priv
);
4327 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
4328 "Ignoring error: %d\n", err
);
4330 iwl_rfkill_set_hw_state(priv
);
4332 /* Start monitoring the killswitch */
4333 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4339 destroy_workqueue(priv
->workqueue
);
4340 priv
->workqueue
= NULL
;
4341 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4343 free_irq(priv
->pci_dev
->irq
, priv
);
4345 pci_disable_msi(priv
->pci_dev
);
4346 iwlcore_free_geos(priv
);
4347 iwl_free_channel_map(priv
);
4348 out_unset_hw_params
:
4349 iwl3945_unset_hw_params(priv
);
4351 iwl_eeprom_free(priv
);
4353 pci_iounmap(pdev
, priv
->hw_base
);
4354 out_pci_release_regions
:
4355 pci_release_regions(pdev
);
4356 out_pci_disable_device
:
4357 pci_set_drvdata(pdev
, NULL
);
4358 pci_disable_device(pdev
);
4359 out_ieee80211_free_hw
:
4360 ieee80211_free_hw(priv
->hw
);
4365 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4367 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4368 unsigned long flags
;
4373 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4375 iwl_dbgfs_unregister(priv
);
4377 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4379 if (priv
->mac80211_registered
) {
4380 ieee80211_unregister_hw(priv
->hw
);
4381 priv
->mac80211_registered
= 0;
4386 /* make sure we flush any pending irq or
4387 * tasklet for the driver
4389 spin_lock_irqsave(&priv
->lock
, flags
);
4390 iwl_disable_interrupts(priv
);
4391 spin_unlock_irqrestore(&priv
->lock
, flags
);
4393 iwl_synchronize_irq(priv
);
4395 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4397 iwl_rfkill_unregister(priv
);
4398 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4400 iwl3945_dealloc_ucode_pci(priv
);
4403 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4404 iwl3945_hw_txq_ctx_free(priv
);
4406 iwl3945_unset_hw_params(priv
);
4407 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
4409 /*netif_stop_queue(dev); */
4410 flush_workqueue(priv
->workqueue
);
4412 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4413 * priv->workqueue... so we can't take down the workqueue
4415 destroy_workqueue(priv
->workqueue
);
4416 priv
->workqueue
= NULL
;
4418 free_irq(pdev
->irq
, priv
);
4419 pci_disable_msi(pdev
);
4421 pci_iounmap(pdev
, priv
->hw_base
);
4422 pci_release_regions(pdev
);
4423 pci_disable_device(pdev
);
4424 pci_set_drvdata(pdev
, NULL
);
4426 iwl_free_channel_map(priv
);
4427 iwlcore_free_geos(priv
);
4429 if (priv
->ibss_beacon
)
4430 dev_kfree_skb(priv
->ibss_beacon
);
4432 ieee80211_free_hw(priv
->hw
);
4436 /*****************************************************************************
4438 * driver and module entry point
4440 *****************************************************************************/
4442 static struct pci_driver iwl3945_driver
= {
4444 .id_table
= iwl3945_hw_card_ids
,
4445 .probe
= iwl3945_pci_probe
,
4446 .remove
= __devexit_p(iwl3945_pci_remove
),
4448 .suspend
= iwl_pci_suspend
,
4449 .resume
= iwl_pci_resume
,
4453 static int __init
iwl3945_init(void)
4457 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4458 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4460 ret
= iwl3945_rate_control_register();
4462 printk(KERN_ERR DRV_NAME
4463 "Unable to register rate control algorithm: %d\n", ret
);
4467 ret
= pci_register_driver(&iwl3945_driver
);
4469 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4470 goto error_register
;
4476 iwl3945_rate_control_unregister();
4480 static void __exit
iwl3945_exit(void)
4482 pci_unregister_driver(&iwl3945_driver
);
4483 iwl3945_rate_control_unregister();
4486 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4488 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, 0444);
4489 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4490 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, 0444);
4491 MODULE_PARM_DESC(swcrypto
,
4492 "using software crypto (default 1 [software])\n");
4493 module_param_named(debug
, iwl3945_mod_params
.debug
, uint
, 0444);
4494 MODULE_PARM_DESC(debug
, "debug output mask");
4495 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
, int, 0444);
4496 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4498 module_param_named(queues_num
, iwl3945_mod_params
.num_of_queues
, int, 0444);
4499 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
4501 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, 0444);
4502 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4504 module_exit(iwl3945_exit
);
4505 module_init(iwl3945_init
);