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 */
99 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
100 * @priv: eeprom and antenna fields are used to determine antenna flags
102 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
103 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
105 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
106 * IWL_ANTENNA_MAIN - Force MAIN antenna
107 * IWL_ANTENNA_AUX - Force AUX antenna
109 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
111 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
113 switch (iwl3945_mod_params
.antenna
) {
114 case IWL_ANTENNA_DIVERSITY
:
117 case IWL_ANTENNA_MAIN
:
118 if (eeprom
->antenna_switch_type
)
119 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
120 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
122 case IWL_ANTENNA_AUX
:
123 if (eeprom
->antenna_switch_type
)
124 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
125 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
128 /* bad antenna selector value */
129 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
130 iwl3945_mod_params
.antenna
);
132 return 0; /* "diversity" is default if error */
135 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
136 struct ieee80211_key_conf
*keyconf
,
140 __le16 key_flags
= 0;
143 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
144 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
146 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
147 key_flags
|= STA_KEY_MULTICAST_MSK
;
149 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
150 keyconf
->hw_key_idx
= keyconf
->keyidx
;
151 key_flags
&= ~STA_KEY_FLG_INVALID
;
153 spin_lock_irqsave(&priv
->sta_lock
, flags
);
154 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
155 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
156 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
159 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
162 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
163 == STA_KEY_FLG_NO_ENC
)
164 priv
->stations
[sta_id
].sta
.key
.key_offset
=
165 iwl_get_free_ucode_key_index(priv
);
166 /* else, we are overriding an existing key => no need to allocated room
169 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
170 "no space for a new key");
172 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
173 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
174 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
176 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
178 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
180 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
185 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
186 struct ieee80211_key_conf
*keyconf
,
192 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
193 struct ieee80211_key_conf
*keyconf
,
199 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
203 spin_lock_irqsave(&priv
->sta_lock
, flags
);
204 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
205 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
206 sizeof(struct iwl4965_keyinfo
));
207 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
208 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
209 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
210 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
212 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
213 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, 0);
217 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
218 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
222 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
224 switch (keyconf
->alg
) {
226 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
229 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
232 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
235 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
239 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
240 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
246 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
248 int ret
= -EOPNOTSUPP
;
253 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
254 struct ieee80211_key_conf
*key
)
256 if (key
->alg
== ALG_WEP
)
259 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
263 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
265 struct list_head
*element
;
267 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
270 while (!list_empty(&priv
->free_frames
)) {
271 element
= priv
->free_frames
.next
;
273 kfree(list_entry(element
, struct iwl3945_frame
, list
));
274 priv
->frames_count
--;
277 if (priv
->frames_count
) {
278 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
280 priv
->frames_count
= 0;
284 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
286 struct iwl3945_frame
*frame
;
287 struct list_head
*element
;
288 if (list_empty(&priv
->free_frames
)) {
289 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
291 IWL_ERR(priv
, "Could not allocate frame!\n");
295 priv
->frames_count
++;
299 element
= priv
->free_frames
.next
;
301 return list_entry(element
, struct iwl3945_frame
, list
);
304 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
306 memset(frame
, 0, sizeof(*frame
));
307 list_add(&frame
->list
, &priv
->free_frames
);
310 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
311 struct ieee80211_hdr
*hdr
,
315 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
316 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
317 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
320 if (priv
->ibss_beacon
->len
> left
)
323 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
325 return priv
->ibss_beacon
->len
;
328 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
330 struct iwl3945_frame
*frame
;
331 unsigned int frame_size
;
335 frame
= iwl3945_get_free_frame(priv
);
338 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
343 rate
= iwl_rate_get_lowest_plcp(priv
);
345 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
347 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
350 iwl3945_free_frame(priv
, frame
);
355 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
357 if (priv
->shared_virt
)
358 pci_free_consistent(priv
->pci_dev
,
359 sizeof(struct iwl3945_shared
),
364 #define MAX_UCODE_BEACON_INTERVAL 1024
365 #define INTEL_CONN_LISTEN_INTERVAL cpu_to_le16(0xA)
367 static __le16
iwl3945_adjust_beacon_interval(u16 beacon_val
)
370 u16 beacon_factor
= 0;
373 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
374 / MAX_UCODE_BEACON_INTERVAL
;
375 new_val
= beacon_val
/ beacon_factor
;
377 return cpu_to_le16(new_val
);
380 static void iwl3945_setup_rxon_timing(struct iwl_priv
*priv
)
382 u64 interval_tm_unit
;
385 struct ieee80211_conf
*conf
= NULL
;
388 conf
= ieee80211_get_hw_conf(priv
->hw
);
390 spin_lock_irqsave(&priv
->lock
, flags
);
391 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
392 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
394 tsf
= priv
->timestamp
;
396 beacon_int
= priv
->beacon_int
;
397 spin_unlock_irqrestore(&priv
->lock
, flags
);
399 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
400 if (beacon_int
== 0) {
401 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
402 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
404 priv
->rxon_timing
.beacon_interval
=
405 cpu_to_le16(beacon_int
);
406 priv
->rxon_timing
.beacon_interval
=
407 iwl3945_adjust_beacon_interval(
408 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
411 priv
->rxon_timing
.atim_window
= 0;
413 priv
->rxon_timing
.beacon_interval
=
414 iwl3945_adjust_beacon_interval(
415 priv
->vif
->bss_conf
.beacon_int
);
416 /* TODO: we need to get atim_window from upper stack
417 * for now we set to 0 */
418 priv
->rxon_timing
.atim_window
= 0;
422 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
423 result
= do_div(tsf
, interval_tm_unit
);
424 priv
->rxon_timing
.beacon_init_val
=
425 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
427 IWL_DEBUG_ASSOC(priv
,
428 "beacon interval %d beacon timer %d beacon tim %d\n",
429 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
430 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
431 le16_to_cpu(priv
->rxon_timing
.atim_window
));
434 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
435 struct ieee80211_tx_info
*info
,
437 struct sk_buff
*skb_frag
,
440 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
441 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
443 switch (keyinfo
->alg
) {
445 tx
->sec_ctl
= TX_CMD_SEC_CCM
;
446 memcpy(tx
->key
, keyinfo
->key
, keyinfo
->keylen
);
447 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
454 tx
->sec_ctl
= TX_CMD_SEC_WEP
|
455 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
457 if (keyinfo
->keylen
== 13)
458 tx
->sec_ctl
|= TX_CMD_SEC_KEY128
;
460 memcpy(&tx
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
462 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
463 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
467 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
473 * handle build REPLY_TX command notification.
475 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
477 struct ieee80211_tx_info
*info
,
478 struct ieee80211_hdr
*hdr
, u8 std_id
)
480 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
481 __le32 tx_flags
= tx
->tx_flags
;
482 __le16 fc
= hdr
->frame_control
;
483 u8 rc_flags
= info
->control
.rates
[0].flags
;
485 tx
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
486 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
487 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
488 if (ieee80211_is_mgmt(fc
))
489 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
490 if (ieee80211_is_probe_resp(fc
) &&
491 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
492 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
494 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
495 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
499 if (ieee80211_has_morefrags(fc
))
500 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
502 if (ieee80211_is_data_qos(fc
)) {
503 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
504 tx
->tid_tspec
= qc
[0] & 0xf;
505 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
507 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
510 if (rc_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
511 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
512 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
513 } else if (rc_flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
514 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
515 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
518 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
519 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
521 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
522 if (ieee80211_is_mgmt(fc
)) {
523 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
524 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
526 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
528 tx
->timeout
.pm_frame_timeout
= 0;
529 #ifdef CONFIG_IWLWIFI_LEDS
530 priv
->rxtxpackets
+= le16_to_cpu(cmd
->cmd
.tx
.len
);
535 tx
->tx_flags
= tx_flags
;
536 tx
->next_frame_len
= 0;
540 * start REPLY_TX command process
542 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
544 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
545 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
546 struct iwl3945_tx_cmd
*tx
;
547 struct iwl_tx_queue
*txq
= NULL
;
548 struct iwl_queue
*q
= NULL
;
549 struct iwl_cmd
*out_cmd
= NULL
;
550 dma_addr_t phys_addr
;
551 dma_addr_t txcmd_phys
;
552 int txq_id
= skb_get_queue_mapping(skb
);
553 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
560 u8 wait_write_ptr
= 0;
565 spin_lock_irqsave(&priv
->lock
, flags
);
566 if (iwl_is_rfkill(priv
)) {
567 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
571 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
572 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
576 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
579 fc
= hdr
->frame_control
;
581 #ifdef CONFIG_IWLWIFI_DEBUG
582 if (ieee80211_is_auth(fc
))
583 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
584 else if (ieee80211_is_assoc_req(fc
))
585 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
586 else if (ieee80211_is_reassoc_req(fc
))
587 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
590 /* drop all data frame if we are not associated */
591 if (ieee80211_is_data(fc
) &&
592 (!iwl_is_monitor_mode(priv
)) && /* packet injection */
593 (!iwl_is_associated(priv
) ||
594 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
595 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
599 spin_unlock_irqrestore(&priv
->lock
, flags
);
601 hdr_len
= ieee80211_hdrlen(fc
);
603 /* Find (or create) index into station table for destination station */
604 sta_id
= iwl_get_sta_id(priv
, hdr
);
605 if (sta_id
== IWL_INVALID_STATION
) {
606 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
611 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
613 if (ieee80211_is_data_qos(fc
)) {
614 qc
= ieee80211_get_qos_ctl(hdr
);
615 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
616 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
618 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
620 cpu_to_le16(IEEE80211_SCTL_FRAG
));
624 /* Descriptor for chosen Tx queue */
625 txq
= &priv
->txq
[txq_id
];
628 spin_lock_irqsave(&priv
->lock
, flags
);
630 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
632 /* Set up driver data for this TFD */
633 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
634 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
636 /* Init first empty entry in queue's array of Tx/cmd buffers */
637 out_cmd
= txq
->cmd
[idx
];
638 tx
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
639 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
640 memset(tx
, 0, sizeof(*tx
));
643 * Set up the Tx-command (not MAC!) header.
644 * Store the chosen Tx queue and TFD index within the sequence field;
645 * after Tx, uCode's Tx response will return this value so driver can
646 * locate the frame within the tx queue and do post-tx processing.
648 out_cmd
->hdr
.cmd
= REPLY_TX
;
649 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
650 INDEX_TO_SEQ(q
->write_ptr
)));
652 /* Copy MAC header from skb into command buffer */
653 memcpy(tx
->hdr
, hdr
, hdr_len
);
656 if (info
->control
.hw_key
)
657 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
659 /* TODO need this for burst mode later on */
660 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
662 /* set is_hcca to 0; it probably will never be implemented */
663 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
665 /* Total # bytes to be transmitted */
667 tx
->len
= cpu_to_le16(len
);
670 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
671 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
673 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
674 txq
->need_update
= 1;
676 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
679 txq
->need_update
= 0;
682 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
683 le16_to_cpu(out_cmd
->hdr
.sequence
));
684 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx
->tx_flags
));
685 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx
, sizeof(*tx
));
686 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx
->hdr
,
687 ieee80211_hdrlen(fc
));
690 * Use the first empty entry in this queue's command buffer array
691 * to contain the Tx command and MAC header concatenated together
692 * (payload data will be in another buffer).
693 * Size of this varies, due to varying MAC header length.
694 * If end is not dword aligned, we'll have 2 extra bytes at the end
695 * of the MAC header (device reads on dword boundaries).
696 * We'll tell device about this padding later.
698 len
= sizeof(struct iwl3945_tx_cmd
) +
699 sizeof(struct iwl_cmd_header
) + hdr_len
;
702 len
= (len
+ 3) & ~3;
709 /* Physical address of this Tx command's header (not MAC header!),
710 * within command buffer array. */
711 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
712 len
, PCI_DMA_TODEVICE
);
713 /* we do not map meta data ... so we can safely access address to
714 * provide to unmap command*/
715 pci_unmap_addr_set(&out_cmd
->meta
, mapping
, txcmd_phys
);
716 pci_unmap_len_set(&out_cmd
->meta
, len
, len
);
718 /* Add buffer containing Tx command and MAC(!) header to TFD's
720 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
721 txcmd_phys
, len
, 1, 0);
724 /* Set up TFD's 2nd entry to point directly to remainder of skb,
725 * if any (802.11 null frames have no payload). */
726 len
= skb
->len
- hdr_len
;
728 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
729 len
, PCI_DMA_TODEVICE
);
730 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
736 /* Tell device the write index *just past* this latest filled TFD */
737 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
738 rc
= iwl_txq_update_write_ptr(priv
, txq
);
739 spin_unlock_irqrestore(&priv
->lock
, flags
);
744 if ((iwl_queue_space(q
) < q
->high_mark
)
745 && priv
->mac80211_registered
) {
746 if (wait_write_ptr
) {
747 spin_lock_irqsave(&priv
->lock
, flags
);
748 txq
->need_update
= 1;
749 iwl_txq_update_write_ptr(priv
, txq
);
750 spin_unlock_irqrestore(&priv
->lock
, flags
);
753 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
759 spin_unlock_irqrestore(&priv
->lock
, flags
);
764 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
766 #include "iwl-spectrum.h"
768 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
769 #define BEACON_TIME_MASK_HIGH 0xFF000000
770 #define TIME_UNIT 1024
773 * extended beacon time format
774 * time in usec will be changed into a 32-bit value in 8:24 format
775 * the high 1 byte is the beacon counts
776 * the lower 3 bytes is the time in usec within one beacon interval
779 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
783 u32 interval
= beacon_interval
* 1024;
785 if (!interval
|| !usec
)
788 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
789 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
791 return (quot
<< 24) + rem
;
794 /* base is usually what we get from ucode with each received frame,
795 * the same as HW timer counter counting down
798 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
800 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
801 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
802 u32 interval
= beacon_interval
* TIME_UNIT
;
803 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
804 (addon
& BEACON_TIME_MASK_HIGH
);
806 if (base_low
> addon_low
)
807 res
+= base_low
- addon_low
;
808 else if (base_low
< addon_low
) {
809 res
+= interval
+ base_low
- addon_low
;
814 return cpu_to_le32(res
);
817 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
818 struct ieee80211_measurement_params
*params
,
821 struct iwl_spectrum_cmd spectrum
;
822 struct iwl_rx_packet
*res
;
823 struct iwl_host_cmd cmd
= {
824 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
825 .data
= (void *)&spectrum
,
826 .meta
.flags
= CMD_WANT_SKB
,
828 u32 add_time
= le64_to_cpu(params
->start_time
);
830 int spectrum_resp_status
;
831 int duration
= le16_to_cpu(params
->duration
);
833 if (iwl_is_associated(priv
))
835 iwl3945_usecs_to_beacons(
836 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
837 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
839 memset(&spectrum
, 0, sizeof(spectrum
));
841 spectrum
.channel_count
= cpu_to_le16(1);
843 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
844 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
845 cmd
.len
= sizeof(spectrum
);
846 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
848 if (iwl_is_associated(priv
))
849 spectrum
.start_time
=
850 iwl3945_add_beacon_time(priv
->last_beacon_time
,
852 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
854 spectrum
.start_time
= 0;
856 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
857 spectrum
.channels
[0].channel
= params
->channel
;
858 spectrum
.channels
[0].type
= type
;
859 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
860 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
861 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
863 rc
= iwl_send_cmd_sync(priv
, &cmd
);
867 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
868 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
869 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
873 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
874 switch (spectrum_resp_status
) {
875 case 0: /* Command will be handled */
876 if (res
->u
.spectrum
.id
!= 0xff) {
877 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
879 priv
->measurement_status
&= ~MEASUREMENT_READY
;
881 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
885 case 1: /* Command will not be handled */
890 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
896 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
897 struct iwl_rx_mem_buffer
*rxb
)
899 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
900 struct iwl_alive_resp
*palive
;
901 struct delayed_work
*pwork
;
903 palive
= &pkt
->u
.alive_frame
;
905 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
907 palive
->is_valid
, palive
->ver_type
,
908 palive
->ver_subtype
);
910 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
911 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
912 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
913 sizeof(struct iwl_alive_resp
));
914 pwork
= &priv
->init_alive_start
;
916 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
917 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
918 sizeof(struct iwl_alive_resp
));
919 pwork
= &priv
->alive_start
;
920 iwl3945_disable_events(priv
);
923 /* We delay the ALIVE response by 5ms to
924 * give the HW RF Kill time to activate... */
925 if (palive
->is_valid
== UCODE_VALID_OK
)
926 queue_delayed_work(priv
->workqueue
, pwork
,
927 msecs_to_jiffies(5));
929 IWL_WARN(priv
, "uCode did not respond OK.\n");
932 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
933 struct iwl_rx_mem_buffer
*rxb
)
935 #ifdef CONFIG_IWLWIFI_DEBUG
936 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
939 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
943 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
945 struct iwl_priv
*priv
=
946 container_of(work
, struct iwl_priv
, beacon_update
);
947 struct sk_buff
*beacon
;
949 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
950 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
953 IWL_ERR(priv
, "update beacon failed\n");
957 mutex_lock(&priv
->mutex
);
958 /* new beacon skb is allocated every time; dispose previous.*/
959 if (priv
->ibss_beacon
)
960 dev_kfree_skb(priv
->ibss_beacon
);
962 priv
->ibss_beacon
= beacon
;
963 mutex_unlock(&priv
->mutex
);
965 iwl3945_send_beacon_cmd(priv
);
968 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
969 struct iwl_rx_mem_buffer
*rxb
)
971 #ifdef CONFIG_IWLWIFI_DEBUG
972 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
973 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
974 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
976 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
977 "tsf %d %d rate %d\n",
978 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
979 beacon
->beacon_notify_hdr
.failure_frame
,
980 le32_to_cpu(beacon
->ibss_mgr_status
),
981 le32_to_cpu(beacon
->high_tsf
),
982 le32_to_cpu(beacon
->low_tsf
), rate
);
985 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
986 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
987 queue_work(priv
->workqueue
, &priv
->beacon_update
);
990 /* Handle notification from uCode that card's power state is changing
991 * due to software, hardware, or critical temperature RFKILL */
992 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
993 struct iwl_rx_mem_buffer
*rxb
)
995 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
996 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
997 unsigned long status
= priv
->status
;
999 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
1000 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
1001 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
1003 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
1004 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1006 if (flags
& HW_CARD_DISABLED
)
1007 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1009 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1012 iwl_scan_cancel(priv
);
1014 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
1015 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
1016 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
1017 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
1019 wake_up_interruptible(&priv
->wait_command_queue
);
1023 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1025 * Setup the RX handlers for each of the reply types sent from the uCode
1028 * This function chains into the hardware specific files for them to setup
1029 * any hardware specific handlers as well.
1031 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
1033 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
1034 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
1035 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
1036 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
1037 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
1038 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
1039 iwl_rx_pm_debug_statistics_notif
;
1040 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
1043 * The same handler is used for both the REPLY to a discrete
1044 * statistics request from the host as well as for the periodic
1045 * statistics notifications (after received beacons) from the uCode.
1047 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
1048 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
1050 iwl_setup_spectrum_handlers(priv
);
1051 iwl_setup_rx_scan_handlers(priv
);
1052 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
1054 /* Set up hardware specific Rx handlers */
1055 iwl3945_hw_rx_handler_setup(priv
);
1058 /************************** RX-FUNCTIONS ****************************/
1060 * Rx theory of operation
1062 * The host allocates 32 DMA target addresses and passes the host address
1063 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1067 * The host/firmware share two index registers for managing the Rx buffers.
1069 * The READ index maps to the first position that the firmware may be writing
1070 * to -- the driver can read up to (but not including) this position and get
1072 * The READ index is managed by the firmware once the card is enabled.
1074 * The WRITE index maps to the last position the driver has read from -- the
1075 * position preceding WRITE is the last slot the firmware can place a packet.
1077 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1080 * During initialization, the host sets up the READ queue position to the first
1081 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1083 * When the firmware places a packet in a buffer, it will advance the READ index
1084 * and fire the RX interrupt. The driver can then query the READ index and
1085 * process as many packets as possible, moving the WRITE index forward as it
1086 * resets the Rx queue buffers with new memory.
1088 * The management in the driver is as follows:
1089 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1090 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1091 * to replenish the iwl->rxq->rx_free.
1092 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1093 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1094 * 'processed' and 'read' driver indexes as well)
1095 * + A received packet is processed and handed to the kernel network stack,
1096 * detached from the iwl->rxq. The driver 'processed' index is updated.
1097 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1098 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1099 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1100 * were enough free buffers and RX_STALLED is set it is cleared.
1105 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1106 * iwl3945_rx_queue_restock
1107 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1108 * queue, updates firmware pointers, and updates
1109 * the WRITE index. If insufficient rx_free buffers
1110 * are available, schedules iwl3945_rx_replenish
1112 * -- enable interrupts --
1113 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1114 * READ INDEX, detaching the SKB from the pool.
1115 * Moves the packet buffer from queue to rx_used.
1116 * Calls iwl3945_rx_queue_restock to refill any empty
1123 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1125 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1126 dma_addr_t dma_addr
)
1128 return cpu_to_le32((u32
)dma_addr
);
1132 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1134 * If there are slots in the RX queue that need to be restocked,
1135 * and we have free pre-allocated buffers, fill the ranks as much
1136 * as we can, pulling from rx_free.
1138 * This moves the 'write' index forward to catch up with 'processed', and
1139 * also updates the memory address in the firmware to reference the new
1142 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1144 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1145 struct list_head
*element
;
1146 struct iwl_rx_mem_buffer
*rxb
;
1147 unsigned long flags
;
1150 spin_lock_irqsave(&rxq
->lock
, flags
);
1151 write
= rxq
->write
& ~0x7;
1152 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1153 /* Get next free Rx buffer, remove from free list */
1154 element
= rxq
->rx_free
.next
;
1155 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1158 /* Point to Rx buffer via next RBD in circular buffer */
1159 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->real_dma_addr
);
1160 rxq
->queue
[rxq
->write
] = rxb
;
1161 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1164 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1165 /* If the pre-allocated buffer pool is dropping low, schedule to
1167 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1168 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1171 /* If we've added more space for the firmware to place data, tell it.
1172 * Increment device's write pointer in multiples of 8. */
1173 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1174 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1175 spin_lock_irqsave(&rxq
->lock
, flags
);
1176 rxq
->need_update
= 1;
1177 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1178 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1187 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1189 * When moving to rx_free an SKB is allocated for the slot.
1191 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1192 * This is called as a scheduled work item (except for during initialization)
1194 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1196 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1197 struct list_head
*element
;
1198 struct iwl_rx_mem_buffer
*rxb
;
1199 unsigned long flags
;
1202 spin_lock_irqsave(&rxq
->lock
, flags
);
1204 if (list_empty(&rxq
->rx_used
)) {
1205 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1209 element
= rxq
->rx_used
.next
;
1210 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1212 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1214 /* Alloc a new receive buffer */
1216 alloc_skb(priv
->hw_params
.rx_buf_size
,
1219 if (net_ratelimit())
1220 IWL_CRIT(priv
, ": Can not allocate SKB buffers\n");
1221 /* We don't reschedule replenish work here -- we will
1222 * call the restock method and if it still needs
1223 * more buffers it will schedule replenish */
1227 /* If radiotap head is required, reserve some headroom here.
1228 * The physical head count is a variable rx_stats->phy_count.
1229 * We reserve 4 bytes here. Plus these extra bytes, the
1230 * headroom of the physical head should be enough for the
1231 * radiotap head that iwl3945 supported. See iwl3945_rt.
1233 skb_reserve(rxb
->skb
, 4);
1235 /* Get physical address of RB/SKB */
1236 rxb
->real_dma_addr
= pci_map_single(priv
->pci_dev
,
1238 priv
->hw_params
.rx_buf_size
,
1239 PCI_DMA_FROMDEVICE
);
1241 spin_lock_irqsave(&rxq
->lock
, flags
);
1242 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1243 priv
->alloc_rxb_skb
++;
1245 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1249 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1251 unsigned long flags
;
1253 spin_lock_irqsave(&rxq
->lock
, flags
);
1254 INIT_LIST_HEAD(&rxq
->rx_free
);
1255 INIT_LIST_HEAD(&rxq
->rx_used
);
1256 /* Fill the rx_used queue with _all_ of the Rx buffers */
1257 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1258 /* In the reset function, these buffers may have been allocated
1259 * to an SKB, so we need to unmap and free potential storage */
1260 if (rxq
->pool
[i
].skb
!= NULL
) {
1261 pci_unmap_single(priv
->pci_dev
,
1262 rxq
->pool
[i
].real_dma_addr
,
1263 priv
->hw_params
.rx_buf_size
,
1264 PCI_DMA_FROMDEVICE
);
1265 priv
->alloc_rxb_skb
--;
1266 dev_kfree_skb(rxq
->pool
[i
].skb
);
1267 rxq
->pool
[i
].skb
= NULL
;
1269 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1272 /* Set us so that we have processed and used all buffers, but have
1273 * not restocked the Rx queue with fresh buffers */
1274 rxq
->read
= rxq
->write
= 0;
1275 rxq
->free_count
= 0;
1276 rxq
->write_actual
= 0;
1277 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1280 void iwl3945_rx_replenish(void *data
)
1282 struct iwl_priv
*priv
= data
;
1283 unsigned long flags
;
1285 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1287 spin_lock_irqsave(&priv
->lock
, flags
);
1288 iwl3945_rx_queue_restock(priv
);
1289 spin_unlock_irqrestore(&priv
->lock
, flags
);
1292 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1294 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1296 iwl3945_rx_queue_restock(priv
);
1300 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1301 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1302 * This free routine walks the list of POOL entries and if SKB is set to
1303 * non NULL it is unmapped and freed
1305 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1308 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1309 if (rxq
->pool
[i
].skb
!= NULL
) {
1310 pci_unmap_single(priv
->pci_dev
,
1311 rxq
->pool
[i
].real_dma_addr
,
1312 priv
->hw_params
.rx_buf_size
,
1313 PCI_DMA_FROMDEVICE
);
1314 dev_kfree_skb(rxq
->pool
[i
].skb
);
1318 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1320 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1321 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1323 rxq
->rb_stts
= NULL
;
1327 /* Convert linear signal-to-noise ratio into dB */
1328 static u8 ratio2dB
[100] = {
1329 /* 0 1 2 3 4 5 6 7 8 9 */
1330 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1331 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1332 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1333 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1334 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1335 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1336 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1337 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1338 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1339 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1342 /* Calculates a relative dB value from a ratio of linear
1343 * (i.e. not dB) signal levels.
1344 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1345 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1347 /* 1000:1 or higher just report as 60 dB */
1348 if (sig_ratio
>= 1000)
1351 /* 100:1 or higher, divide by 10 and use table,
1352 * add 20 dB to make up for divide by 10 */
1353 if (sig_ratio
>= 100)
1354 return 20 + (int)ratio2dB
[sig_ratio
/10];
1356 /* We shouldn't see this */
1360 /* Use table for ratios 1:1 - 99:1 */
1361 return (int)ratio2dB
[sig_ratio
];
1364 #define PERFECT_RSSI (-20) /* dBm */
1365 #define WORST_RSSI (-95) /* dBm */
1366 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1368 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1369 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1370 * about formulas used below. */
1371 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1374 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1376 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1377 * as indicator; formula is (signal dbm - noise dbm).
1378 * SNR at or above 40 is a great signal (100%).
1379 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1380 * Weakest usable signal is usually 10 - 15 dB SNR. */
1382 if (rssi_dbm
- noise_dbm
>= 40)
1384 else if (rssi_dbm
< noise_dbm
)
1386 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1388 /* Else use just the signal level.
1389 * This formula is a least squares fit of data points collected and
1390 * compared with a reference system that had a percentage (%) display
1391 * for signal quality. */
1393 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1394 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1395 (RSSI_RANGE
* RSSI_RANGE
);
1399 else if (sig_qual
< 1)
1406 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1408 * Uses the priv->rx_handlers callback function array to invoke
1409 * the appropriate handlers, including command responses,
1410 * frame-received notifications, and other notifications.
1412 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1414 struct iwl_rx_mem_buffer
*rxb
;
1415 struct iwl_rx_packet
*pkt
;
1416 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1419 unsigned long flags
;
1422 int total_empty
= 0;
1424 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1425 * buffer that the driver may process (last buffer filled by ucode). */
1426 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1429 /* calculate total frames need to be restock after handling RX */
1430 total_empty
= r
- priv
->rxq
.write_actual
;
1431 if (total_empty
< 0)
1432 total_empty
+= RX_QUEUE_SIZE
;
1434 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1436 /* Rx interrupt, but nothing sent from uCode */
1438 IWL_DEBUG(priv
, IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
1441 rxb
= rxq
->queue
[i
];
1443 /* If an RXB doesn't have a Rx queue slot associated with it,
1444 * then a bug has been introduced in the queue refilling
1445 * routines -- catch it here */
1446 BUG_ON(rxb
== NULL
);
1448 rxq
->queue
[i
] = NULL
;
1450 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1451 priv
->hw_params
.rx_buf_size
,
1452 PCI_DMA_FROMDEVICE
);
1453 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1455 /* Reclaim a command buffer only if this packet is a response
1456 * to a (driver-originated) command.
1457 * If the packet (e.g. Rx frame) originated from uCode,
1458 * there is no command buffer to reclaim.
1459 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1460 * but apparently a few don't get set; catch them here. */
1461 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1462 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1463 (pkt
->hdr
.cmd
!= REPLY_TX
);
1465 /* Based on type of command response or notification,
1466 * handle those that need handling via function in
1467 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1468 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1469 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1470 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1471 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1472 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1473 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1475 /* No handling needed */
1476 IWL_DEBUG(priv
, IWL_DL_HCMD
| IWL_DL_RX
| IWL_DL_ISR
,
1477 "r %d i %d No handler needed for %s, 0x%02x\n",
1478 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1483 /* Invoke any callbacks, transfer the skb to caller, and
1484 * fire off the (possibly) blocking iwl_send_cmd()
1485 * as we reclaim the driver command queue */
1486 if (rxb
&& rxb
->skb
)
1487 iwl_tx_cmd_complete(priv
, rxb
);
1489 IWL_WARN(priv
, "Claim null rxb?\n");
1492 /* For now we just don't re-use anything. We can tweak this
1493 * later to try and re-use notification packets and SKBs that
1494 * fail to Rx correctly */
1495 if (rxb
->skb
!= NULL
) {
1496 priv
->alloc_rxb_skb
--;
1497 dev_kfree_skb_any(rxb
->skb
);
1501 spin_lock_irqsave(&rxq
->lock
, flags
);
1502 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1503 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1504 i
= (i
+ 1) & RX_QUEUE_MASK
;
1505 /* If there are a lot of unused frames,
1506 * restock the Rx queue so ucode won't assert. */
1511 iwl3945_rx_replenish_now(priv
);
1517 /* Backtrack one entry */
1520 iwl3945_rx_replenish_now(priv
);
1522 iwl3945_rx_queue_restock(priv
);
1525 /* call this function to flush any scheduled tasklet */
1526 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1528 /* wait to make sure we flush pending tasklet*/
1529 synchronize_irq(priv
->pci_dev
->irq
);
1530 tasklet_kill(&priv
->irq_tasklet
);
1533 static const char *desc_lookup(int i
)
1541 return "BAD_CHECKSUM";
1543 return "NMI_INTERRUPT";
1547 return "FATAL_ERROR";
1553 #define ERROR_START_OFFSET (1 * sizeof(u32))
1554 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1556 static void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1559 u32 desc
, time
, count
, base
, data1
;
1560 u32 blink1
, blink2
, ilink1
, ilink2
;
1562 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1564 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1565 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1570 count
= iwl_read_targ_mem(priv
, base
);
1572 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1573 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1574 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1575 priv
->status
, count
);
1578 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1579 "ilink1 nmiPC Line\n");
1580 for (i
= ERROR_START_OFFSET
;
1581 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1582 i
+= ERROR_ELEM_SIZE
) {
1583 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1585 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1587 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1589 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1591 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1593 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1595 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1598 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1599 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1600 ilink1
, ilink2
, data1
);
1605 #define EVENT_START_OFFSET (6 * sizeof(u32))
1608 * iwl3945_print_event_log - Dump error event log to syslog
1611 static void iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1612 u32 num_events
, u32 mode
)
1615 u32 base
; /* SRAM byte address of event log header */
1616 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1617 u32 ptr
; /* SRAM byte address of log data */
1618 u32 ev
, time
, data
; /* event log data */
1620 if (num_events
== 0)
1623 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1626 event_size
= 2 * sizeof(u32
);
1628 event_size
= 3 * sizeof(u32
);
1630 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1632 /* "time" is actually "data" for mode 0 (no timestamp).
1633 * place event id # at far right for easier visual parsing. */
1634 for (i
= 0; i
< num_events
; i
++) {
1635 ev
= iwl_read_targ_mem(priv
, ptr
);
1637 time
= iwl_read_targ_mem(priv
, ptr
);
1641 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1643 data
= iwl_read_targ_mem(priv
, ptr
);
1645 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n", time
, data
, ev
);
1650 static void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1652 u32 base
; /* SRAM byte address of event log header */
1653 u32 capacity
; /* event log capacity in # entries */
1654 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1655 u32 num_wraps
; /* # times uCode wrapped to top of log */
1656 u32 next_entry
; /* index of next entry to be written by uCode */
1657 u32 size
; /* # entries that we'll print */
1659 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1660 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1661 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1665 /* event log header */
1666 capacity
= iwl_read_targ_mem(priv
, base
);
1667 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1668 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1669 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1671 size
= num_wraps
? capacity
: next_entry
;
1673 /* bail out if nothing in log */
1675 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1679 IWL_ERR(priv
, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1682 /* if uCode has wrapped back to top of log, start at the oldest entry,
1683 * i.e the next one that uCode would fill. */
1685 iwl3945_print_event_log(priv
, next_entry
,
1686 capacity
- next_entry
, mode
);
1688 /* (then/else) start at top of log */
1689 iwl3945_print_event_log(priv
, 0, next_entry
, mode
);
1693 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1695 u32 inta
, handled
= 0;
1697 unsigned long flags
;
1698 #ifdef CONFIG_IWLWIFI_DEBUG
1702 spin_lock_irqsave(&priv
->lock
, flags
);
1704 /* Ack/clear/reset pending uCode interrupts.
1705 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1706 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1707 inta
= iwl_read32(priv
, CSR_INT
);
1708 iwl_write32(priv
, CSR_INT
, inta
);
1710 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1711 * Any new interrupts that happen after this, either while we're
1712 * in this tasklet, or later, will show up in next ISR/tasklet. */
1713 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1714 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1716 #ifdef CONFIG_IWLWIFI_DEBUG
1717 if (priv
->debug_level
& IWL_DL_ISR
) {
1718 /* just for debug */
1719 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1720 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1721 inta
, inta_mask
, inta_fh
);
1725 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1726 * atomic, make sure that inta covers all the interrupts that
1727 * we've discovered, even if FH interrupt came in just after
1728 * reading CSR_INT. */
1729 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1730 inta
|= CSR_INT_BIT_FH_RX
;
1731 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1732 inta
|= CSR_INT_BIT_FH_TX
;
1734 /* Now service all interrupt bits discovered above. */
1735 if (inta
& CSR_INT_BIT_HW_ERR
) {
1736 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1738 /* Tell the device to stop sending interrupts */
1739 iwl_disable_interrupts(priv
);
1741 priv
->isr_stats
.hw
++;
1742 iwl_irq_handle_error(priv
);
1744 handled
|= CSR_INT_BIT_HW_ERR
;
1746 spin_unlock_irqrestore(&priv
->lock
, flags
);
1751 #ifdef CONFIG_IWLWIFI_DEBUG
1752 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1753 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1754 if (inta
& CSR_INT_BIT_SCD
) {
1755 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1756 "the frame/frames.\n");
1757 priv
->isr_stats
.sch
++;
1760 /* Alive notification via Rx interrupt will do the real work */
1761 if (inta
& CSR_INT_BIT_ALIVE
) {
1762 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1763 priv
->isr_stats
.alive
++;
1767 /* Safely ignore these bits for debug checks below */
1768 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1770 /* Error detected by uCode */
1771 if (inta
& CSR_INT_BIT_SW_ERR
) {
1772 IWL_ERR(priv
, "Microcode SW error detected. "
1773 "Restarting 0x%X.\n", inta
);
1774 priv
->isr_stats
.sw
++;
1775 priv
->isr_stats
.sw_err
= inta
;
1776 iwl_irq_handle_error(priv
);
1777 handled
|= CSR_INT_BIT_SW_ERR
;
1780 /* uCode wakes up after power-down sleep */
1781 if (inta
& CSR_INT_BIT_WAKEUP
) {
1782 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1783 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1784 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1785 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1786 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1787 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1788 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1789 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1791 priv
->isr_stats
.wakeup
++;
1792 handled
|= CSR_INT_BIT_WAKEUP
;
1795 /* All uCode command responses, including Tx command responses,
1796 * Rx "responses" (frame-received notification), and other
1797 * notifications from uCode come through here*/
1798 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1799 iwl3945_rx_handle(priv
);
1800 priv
->isr_stats
.rx
++;
1801 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1804 if (inta
& CSR_INT_BIT_FH_TX
) {
1805 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1806 priv
->isr_stats
.tx
++;
1808 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1809 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1810 (FH39_SRVC_CHNL
), 0x0);
1811 handled
|= CSR_INT_BIT_FH_TX
;
1814 if (inta
& ~handled
) {
1815 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1816 priv
->isr_stats
.unhandled
++;
1819 if (inta
& ~priv
->inta_mask
) {
1820 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1821 inta
& ~priv
->inta_mask
);
1822 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1825 /* Re-enable all interrupts */
1826 /* only Re-enable if disabled by irq */
1827 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1828 iwl_enable_interrupts(priv
);
1830 #ifdef CONFIG_IWLWIFI_DEBUG
1831 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1832 inta
= iwl_read32(priv
, CSR_INT
);
1833 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1834 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1835 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1836 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1839 spin_unlock_irqrestore(&priv
->lock
, flags
);
1842 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1843 enum ieee80211_band band
,
1844 u8 is_active
, u8 n_probes
,
1845 struct iwl3945_scan_channel
*scan_ch
)
1847 const struct ieee80211_channel
*channels
= NULL
;
1848 const struct ieee80211_supported_band
*sband
;
1849 const struct iwl_channel_info
*ch_info
;
1850 u16 passive_dwell
= 0;
1851 u16 active_dwell
= 0;
1854 sband
= iwl_get_hw_mode(priv
, band
);
1858 channels
= sband
->channels
;
1860 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1861 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1863 if (passive_dwell
<= active_dwell
)
1864 passive_dwell
= active_dwell
+ 1;
1866 for (i
= 0, added
= 0; i
< sband
->n_channels
; i
++) {
1867 if (channels
[i
].flags
& IEEE80211_CHAN_DISABLED
)
1870 scan_ch
->channel
= channels
[i
].hw_value
;
1872 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1873 if (!is_channel_valid(ch_info
)) {
1874 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1879 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1880 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1881 /* If passive , set up for auto-switch
1882 * and use long active_dwell time.
1884 if (!is_active
|| is_channel_passive(ch_info
) ||
1885 (channels
[i
].flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1886 scan_ch
->type
= 0; /* passive */
1887 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1888 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1890 scan_ch
->type
= 1; /* active */
1893 /* Set direct probe bits. These may be used both for active
1894 * scan channels (probes gets sent right away),
1895 * or for passive channels (probes get se sent only after
1896 * hearing clear Rx packet).*/
1897 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1899 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1901 /* uCode v1 does not allow setting direct probe bits on
1902 * passive channel. */
1903 if ((scan_ch
->type
& 1) && n_probes
)
1904 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1907 /* Set txpower levels to defaults */
1908 scan_ch
->tpc
.dsp_atten
= 110;
1909 /* scan_pwr_info->tpc.dsp_atten; */
1911 /*scan_pwr_info->tpc.tx_gain; */
1912 if (band
== IEEE80211_BAND_5GHZ
)
1913 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1915 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1916 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1918 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1922 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1924 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1925 (scan_ch
->type
& 1) ?
1926 active_dwell
: passive_dwell
);
1932 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
1936 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1937 struct ieee80211_rate
*rates
)
1941 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
1942 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1943 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1944 rates
[i
].hw_value_short
= i
;
1946 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1948 * If CCK != 1M then set short preamble rate flag.
1950 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1951 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1956 /******************************************************************************
1958 * uCode download functions
1960 ******************************************************************************/
1962 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1964 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1965 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1966 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1967 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1968 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1969 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1973 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1974 * looking at all data.
1976 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1983 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1985 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1986 IWL39_RTC_INST_LOWER_BOUND
);
1989 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1990 /* read data comes through single port, auto-incr addr */
1991 /* NOTE: Use the debugless read so we don't flood kernel log
1992 * if IWL_DL_IO is set */
1993 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1994 if (val
!= le32_to_cpu(*image
)) {
1995 IWL_ERR(priv
, "uCode INST section is invalid at "
1996 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1997 save_len
- len
, val
, le32_to_cpu(*image
));
2007 IWL_DEBUG_INFO(priv
,
2008 "ucode image in INSTRUCTION memory is good\n");
2015 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2016 * using sample data 100 bytes apart. If these sample points are good,
2017 * it's a pretty good bet that everything between them is good, too.
2019 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2026 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2028 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2029 /* read data comes through single port, auto-incr addr */
2030 /* NOTE: Use the debugless read so we don't flood kernel log
2031 * if IWL_DL_IO is set */
2032 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2033 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2034 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2035 if (val
!= le32_to_cpu(*image
)) {
2036 #if 0 /* Enable this if you want to see details */
2037 IWL_ERR(priv
, "uCode INST section is invalid at "
2038 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2053 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2054 * and verify its contents
2056 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2063 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2064 len
= priv
->ucode_boot
.len
;
2065 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2067 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2071 /* Try initialize */
2072 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2073 len
= priv
->ucode_init
.len
;
2074 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2076 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2080 /* Try runtime/protocol */
2081 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2082 len
= priv
->ucode_code
.len
;
2083 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2085 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2089 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2091 /* Since nothing seems to match, show first several data entries in
2092 * instruction SRAM, so maybe visual inspection will give a clue.
2093 * Selection of bootstrap image (vs. other images) is arbitrary. */
2094 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2095 len
= priv
->ucode_boot
.len
;
2096 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2101 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2103 /* Remove all resets to allow NIC to operate */
2104 iwl_write32(priv
, CSR_RESET
, 0);
2108 * iwl3945_read_ucode - Read uCode images from disk file.
2110 * Copy into buffers for card to fetch via bus-mastering
2112 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2114 struct iwl_ucode
*ucode
;
2115 int ret
= -EINVAL
, index
;
2116 const struct firmware
*ucode_raw
;
2117 /* firmware file name contains uCode/driver compatibility version */
2118 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2119 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2120 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2124 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2126 /* Ask kernel firmware_class module to get the boot firmware off disk.
2127 * request_firmware() is synchronous, file is in memory on return. */
2128 for (index
= api_max
; index
>= api_min
; index
--) {
2129 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2130 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2132 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2139 if (index
< api_max
)
2140 IWL_ERR(priv
, "Loaded firmware %s, "
2141 "which is deprecated. "
2142 " Please use API v%u instead.\n",
2144 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2145 "(%zd bytes) from disk\n",
2146 buf
, ucode_raw
->size
);
2154 /* Make sure that we got at least our header! */
2155 if (ucode_raw
->size
< sizeof(*ucode
)) {
2156 IWL_ERR(priv
, "File size way too small!\n");
2161 /* Data from ucode file: header followed by uCode images */
2162 ucode
= (void *)ucode_raw
->data
;
2164 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2165 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2166 inst_size
= le32_to_cpu(ucode
->inst_size
);
2167 data_size
= le32_to_cpu(ucode
->data_size
);
2168 init_size
= le32_to_cpu(ucode
->init_size
);
2169 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
2170 boot_size
= le32_to_cpu(ucode
->boot_size
);
2172 /* api_ver should match the api version forming part of the
2173 * firmware filename ... but we don't check for that and only rely
2174 * on the API version read from firmware header from here on forward */
2176 if (api_ver
< api_min
|| api_ver
> api_max
) {
2177 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2178 "Driver supports v%u, firmware is v%u.\n",
2180 priv
->ucode_ver
= 0;
2184 if (api_ver
!= api_max
)
2185 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2186 "got %u. New firmware can be obtained "
2187 "from http://www.intellinuxwireless.org.\n",
2190 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2191 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2192 IWL_UCODE_MINOR(priv
->ucode_ver
),
2193 IWL_UCODE_API(priv
->ucode_ver
),
2194 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2196 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2198 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2200 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2202 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2204 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2206 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2210 /* Verify size of file vs. image size info in file's header */
2211 if (ucode_raw
->size
< sizeof(*ucode
) +
2212 inst_size
+ data_size
+ init_size
+
2213 init_data_size
+ boot_size
) {
2215 IWL_DEBUG_INFO(priv
, "uCode file size %zd too small\n",
2221 /* Verify that uCode images will fit in card's SRAM */
2222 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2223 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2229 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2230 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2235 if (init_size
> IWL39_MAX_INST_SIZE
) {
2236 IWL_DEBUG_INFO(priv
,
2237 "uCode init instr len %d too large to fit in\n",
2242 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2243 IWL_DEBUG_INFO(priv
,
2244 "uCode init data len %d too large to fit in\n",
2249 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2250 IWL_DEBUG_INFO(priv
,
2251 "uCode boot instr len %d too large to fit in\n",
2257 /* Allocate ucode buffers for card's bus-master loading ... */
2259 /* Runtime instructions and 2 copies of data:
2260 * 1) unmodified from disk
2261 * 2) backup cache for save/restore during power-downs */
2262 priv
->ucode_code
.len
= inst_size
;
2263 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2265 priv
->ucode_data
.len
= data_size
;
2266 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2268 priv
->ucode_data_backup
.len
= data_size
;
2269 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2271 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2272 !priv
->ucode_data_backup
.v_addr
)
2275 /* Initialization instructions and data */
2276 if (init_size
&& init_data_size
) {
2277 priv
->ucode_init
.len
= init_size
;
2278 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2280 priv
->ucode_init_data
.len
= init_data_size
;
2281 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2283 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2287 /* Bootstrap (instructions only, no data) */
2289 priv
->ucode_boot
.len
= boot_size
;
2290 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2292 if (!priv
->ucode_boot
.v_addr
)
2296 /* Copy images into buffers for card's bus-master reads ... */
2298 /* Runtime instructions (first block of data in file) */
2299 src
= &ucode
->data
[0];
2300 len
= priv
->ucode_code
.len
;
2301 IWL_DEBUG_INFO(priv
,
2302 "Copying (but not loading) uCode instr len %zd\n", len
);
2303 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2304 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2305 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2307 /* Runtime data (2nd block)
2308 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2309 src
= &ucode
->data
[inst_size
];
2310 len
= priv
->ucode_data
.len
;
2311 IWL_DEBUG_INFO(priv
,
2312 "Copying (but not loading) uCode data len %zd\n", len
);
2313 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2314 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2316 /* Initialization instructions (3rd block) */
2318 src
= &ucode
->data
[inst_size
+ data_size
];
2319 len
= priv
->ucode_init
.len
;
2320 IWL_DEBUG_INFO(priv
,
2321 "Copying (but not loading) init instr len %zd\n", len
);
2322 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2325 /* Initialization data (4th block) */
2326 if (init_data_size
) {
2327 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
2328 len
= priv
->ucode_init_data
.len
;
2329 IWL_DEBUG_INFO(priv
,
2330 "Copying (but not loading) init data len %zd\n", len
);
2331 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2334 /* Bootstrap instructions (5th block) */
2335 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
2336 len
= priv
->ucode_boot
.len
;
2337 IWL_DEBUG_INFO(priv
,
2338 "Copying (but not loading) boot instr len %zd\n", len
);
2339 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2341 /* We have our copies now, allow OS release its copies */
2342 release_firmware(ucode_raw
);
2346 IWL_ERR(priv
, "failed to allocate pci memory\n");
2348 iwl3945_dealloc_ucode_pci(priv
);
2351 release_firmware(ucode_raw
);
2359 * iwl3945_set_ucode_ptrs - Set uCode address location
2361 * Tell initialization uCode where to find runtime uCode.
2363 * BSM registers initially contain pointers to initialization uCode.
2364 * We need to replace them to load runtime uCode inst and data,
2365 * and to save runtime data when powering down.
2367 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2372 /* bits 31:0 for 3945 */
2373 pinst
= priv
->ucode_code
.p_addr
;
2374 pdata
= priv
->ucode_data_backup
.p_addr
;
2376 /* Tell bootstrap uCode where to find image to load */
2377 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2378 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2379 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2380 priv
->ucode_data
.len
);
2382 /* Inst byte count must be last to set up, bit 31 signals uCode
2383 * that all new ptr/size info is in place */
2384 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2385 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2387 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2393 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2395 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2397 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2399 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2401 /* Check alive response for "valid" sign from uCode */
2402 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2403 /* We had an error bringing up the hardware, so take it
2404 * all the way back down so we can try again */
2405 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2409 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2410 * This is a paranoid check, because we would not have gotten the
2411 * "initialize" alive if code weren't properly loaded. */
2412 if (iwl3945_verify_ucode(priv
)) {
2413 /* Runtime instruction load was bad;
2414 * take it all the way back down so we can try again */
2415 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2419 /* Send pointers to protocol/runtime uCode image ... init code will
2420 * load and launch runtime uCode, which will send us another "Alive"
2422 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2423 if (iwl3945_set_ucode_ptrs(priv
)) {
2424 /* Runtime instruction load won't happen;
2425 * take it all the way back down so we can try again */
2426 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2432 queue_work(priv
->workqueue
, &priv
->restart
);
2436 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2437 * from protocol/runtime uCode (initialization uCode's
2438 * Alive gets handled by iwl3945_init_alive_start()).
2440 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2442 int thermal_spin
= 0;
2445 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2447 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2448 /* We had an error bringing up the hardware, so take it
2449 * all the way back down so we can try again */
2450 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2454 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2455 * This is a paranoid check, because we would not have gotten the
2456 * "runtime" alive if code weren't properly loaded. */
2457 if (iwl3945_verify_ucode(priv
)) {
2458 /* Runtime instruction load was bad;
2459 * take it all the way back down so we can try again */
2460 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2464 iwl_clear_stations_table(priv
);
2466 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2467 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2470 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2471 /* if RFKILL is not on, then wait for thermal
2472 * sensor in adapter to kick in */
2473 while (iwl3945_hw_get_temperature(priv
) == 0) {
2479 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2482 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2484 /* After the ALIVE response, we can send commands to 3945 uCode */
2485 set_bit(STATUS_ALIVE
, &priv
->status
);
2487 if (iwl_is_rfkill(priv
))
2490 ieee80211_wake_queues(priv
->hw
);
2492 priv
->active_rate
= priv
->rates_mask
;
2493 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2495 iwl_power_update_mode(priv
, false);
2497 if (iwl_is_associated(priv
)) {
2498 struct iwl3945_rxon_cmd
*active_rxon
=
2499 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2501 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2502 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2504 /* Initialize our rx_config data */
2505 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2508 /* Configure Bluetooth device coexistence support */
2509 iwl_send_bt_config(priv
);
2511 /* Configure the adapter for unassociated operation */
2512 iwlcore_commit_rxon(priv
);
2514 iwl3945_reg_txpower_periodic(priv
);
2516 iwl3945_led_register(priv
);
2518 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2519 set_bit(STATUS_READY
, &priv
->status
);
2520 wake_up_interruptible(&priv
->wait_command_queue
);
2522 /* reassociate for ADHOC mode */
2523 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2524 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2527 iwl_mac_beacon_update(priv
->hw
, beacon
);
2530 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2531 iwl_set_mode(priv
, priv
->iw_mode
);
2536 queue_work(priv
->workqueue
, &priv
->restart
);
2539 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2541 static void __iwl3945_down(struct iwl_priv
*priv
)
2543 unsigned long flags
;
2544 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2545 struct ieee80211_conf
*conf
= NULL
;
2547 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2549 conf
= ieee80211_get_hw_conf(priv
->hw
);
2552 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2554 iwl3945_led_unregister(priv
);
2555 iwl_clear_stations_table(priv
);
2557 /* Unblock any waiting calls */
2558 wake_up_interruptible_all(&priv
->wait_command_queue
);
2560 /* Wipe out the EXIT_PENDING status bit if we are not actually
2561 * exiting the module */
2563 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2565 /* stop and reset the on-board processor */
2566 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2568 /* tell the device to stop sending interrupts */
2569 spin_lock_irqsave(&priv
->lock
, flags
);
2570 iwl_disable_interrupts(priv
);
2571 spin_unlock_irqrestore(&priv
->lock
, flags
);
2572 iwl_synchronize_irq(priv
);
2574 if (priv
->mac80211_registered
)
2575 ieee80211_stop_queues(priv
->hw
);
2577 /* If we have not previously called iwl3945_init() then
2578 * clear all bits but the RF Kill bits and return */
2579 if (!iwl_is_init(priv
)) {
2580 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2582 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2583 STATUS_GEO_CONFIGURED
|
2584 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2585 STATUS_EXIT_PENDING
;
2589 /* ...otherwise clear out all the status bits but the RF Kill
2590 * bit and continue taking the NIC down. */
2591 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2593 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2594 STATUS_GEO_CONFIGURED
|
2595 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2597 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2598 STATUS_EXIT_PENDING
;
2600 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2601 spin_lock_irqsave(&priv
->lock
, flags
);
2602 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2603 spin_unlock_irqrestore(&priv
->lock
, flags
);
2605 iwl3945_hw_txq_ctx_stop(priv
);
2606 iwl3945_hw_rxq_stop(priv
);
2608 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
2609 APMG_CLK_VAL_DMA_CLK_RQT
);
2614 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2616 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2619 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2621 if (priv
->ibss_beacon
)
2622 dev_kfree_skb(priv
->ibss_beacon
);
2623 priv
->ibss_beacon
= NULL
;
2625 /* clear out any free frames */
2626 iwl3945_clear_free_frames(priv
);
2629 static void iwl3945_down(struct iwl_priv
*priv
)
2631 mutex_lock(&priv
->mutex
);
2632 __iwl3945_down(priv
);
2633 mutex_unlock(&priv
->mutex
);
2635 iwl3945_cancel_deferred_work(priv
);
2638 #define MAX_HW_RESTARTS 5
2640 static int __iwl3945_up(struct iwl_priv
*priv
)
2644 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2645 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2649 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2650 IWL_ERR(priv
, "ucode not available for device bring up\n");
2654 /* If platform's RF_KILL switch is NOT set to KILL */
2655 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2656 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2657 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2659 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2660 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2664 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2666 rc
= iwl3945_hw_nic_init(priv
);
2668 IWL_ERR(priv
, "Unable to int nic\n");
2672 /* make sure rfkill handshake bits are cleared */
2673 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2674 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2675 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2677 /* clear (again), then enable host interrupts */
2678 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2679 iwl_enable_interrupts(priv
);
2681 /* really make sure rfkill handshake bits are cleared */
2682 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2683 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2685 /* Copy original ucode data image from disk into backup cache.
2686 * This will be used to initialize the on-board processor's
2687 * data SRAM for a clean start when the runtime program first loads. */
2688 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2689 priv
->ucode_data
.len
);
2691 /* We return success when we resume from suspend and rf_kill is on. */
2692 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2695 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2697 iwl_clear_stations_table(priv
);
2699 /* load bootstrap state machine,
2700 * load bootstrap program into processor's memory,
2701 * prepare to load the "initialize" uCode */
2702 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2706 "Unable to set up bootstrap uCode: %d\n", rc
);
2710 /* start card; "initialize" will load runtime ucode */
2711 iwl3945_nic_start(priv
);
2713 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2718 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2719 __iwl3945_down(priv
);
2720 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2722 /* tried to restart and config the device for as long as our
2723 * patience could withstand */
2724 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2729 /*****************************************************************************
2731 * Workqueue callbacks
2733 *****************************************************************************/
2735 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2737 struct iwl_priv
*priv
=
2738 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2740 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2743 mutex_lock(&priv
->mutex
);
2744 iwl3945_init_alive_start(priv
);
2745 mutex_unlock(&priv
->mutex
);
2748 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2750 struct iwl_priv
*priv
=
2751 container_of(data
, struct iwl_priv
, alive_start
.work
);
2753 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2756 mutex_lock(&priv
->mutex
);
2757 iwl3945_alive_start(priv
);
2758 mutex_unlock(&priv
->mutex
);
2761 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2763 struct iwl_priv
*priv
=
2764 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2766 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2767 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2769 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2771 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
2772 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
2774 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2775 round_jiffies_relative(2 * HZ
));
2779 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2780 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2782 struct iwl_priv
*priv
=
2783 container_of(data
, struct iwl_priv
, request_scan
);
2784 struct iwl_host_cmd cmd
= {
2785 .id
= REPLY_SCAN_CMD
,
2786 .len
= sizeof(struct iwl3945_scan_cmd
),
2787 .meta
.flags
= CMD_SIZE_HUGE
,
2790 struct iwl3945_scan_cmd
*scan
;
2791 struct ieee80211_conf
*conf
= NULL
;
2793 enum ieee80211_band band
;
2794 bool is_active
= false;
2796 conf
= ieee80211_get_hw_conf(priv
->hw
);
2798 mutex_lock(&priv
->mutex
);
2800 cancel_delayed_work(&priv
->scan_check
);
2802 if (!iwl_is_ready(priv
)) {
2803 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2807 /* Make sure the scan wasn't canceled before this queued work
2808 * was given the chance to run... */
2809 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2812 /* This should never be called or scheduled if there is currently
2813 * a scan active in the hardware. */
2814 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2815 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2816 "Ignoring second request.\n");
2821 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2822 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2826 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2828 "Scan request while abort pending. Queuing.\n");
2832 if (iwl_is_rfkill(priv
)) {
2833 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2837 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2839 "Scan request while uninitialized. Queuing.\n");
2843 if (!priv
->scan_bands
) {
2844 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2849 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2850 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2857 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2859 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2860 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2862 if (iwl_is_associated(priv
)) {
2865 u32 suspend_time
= 100;
2866 u32 scan_suspend_time
= 100;
2867 unsigned long flags
;
2869 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2871 spin_lock_irqsave(&priv
->lock
, flags
);
2872 interval
= priv
->beacon_int
;
2873 spin_unlock_irqrestore(&priv
->lock
, flags
);
2875 scan
->suspend_time
= 0;
2876 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2878 interval
= suspend_time
;
2880 * suspend time format:
2881 * 0-19: beacon interval in usec (time before exec.)
2883 * 24-31: number of beacons (suspend between channels)
2886 extra
= (suspend_time
/ interval
) << 24;
2887 scan_suspend_time
= 0xFF0FFFFF &
2888 (extra
| ((suspend_time
% interval
) * 1024));
2890 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2891 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2892 scan_suspend_time
, interval
);
2895 if (priv
->scan_request
->n_ssids
) {
2897 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2898 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2899 /* always does wildcard anyway */
2900 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2902 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2903 scan
->direct_scan
[p
].len
=
2904 priv
->scan_request
->ssids
[i
].ssid_len
;
2905 memcpy(scan
->direct_scan
[p
].ssid
,
2906 priv
->scan_request
->ssids
[i
].ssid
,
2907 priv
->scan_request
->ssids
[i
].ssid_len
);
2913 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2915 /* We don't build a direct scan probe request; the uCode will do
2916 * that based on the direct_mask added to each channel entry */
2917 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2918 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2919 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2921 /* flags + rate selection */
2923 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
2924 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2925 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2926 scan
->good_CRC_th
= 0;
2927 band
= IEEE80211_BAND_2GHZ
;
2928 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
2929 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2931 * If active scaning is requested but a certain channel
2932 * is marked passive, we can do active scanning if we
2933 * detect transmissions.
2935 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
2936 band
= IEEE80211_BAND_5GHZ
;
2938 IWL_WARN(priv
, "Invalid scan band count\n");
2942 scan
->tx_cmd
.len
= cpu_to_le16(
2943 iwl_fill_probe_req(priv
,
2944 (struct ieee80211_mgmt
*)scan
->data
,
2945 priv
->scan_request
->ie
,
2946 priv
->scan_request
->ie_len
,
2947 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2949 /* select Rx antennas */
2950 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2952 if (iwl_is_monitor_mode(priv
))
2953 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
2955 scan
->channel_count
=
2956 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2957 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
2959 if (scan
->channel_count
== 0) {
2960 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
2964 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
2965 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
2967 scan
->len
= cpu_to_le16(cmd
.len
);
2969 set_bit(STATUS_SCAN_HW
, &priv
->status
);
2970 rc
= iwl_send_cmd_sync(priv
, &cmd
);
2974 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
2975 IWL_SCAN_CHECK_WATCHDOG
);
2977 mutex_unlock(&priv
->mutex
);
2981 /* can not perform scan make sure we clear scanning
2982 * bits from status so next scan request can be performed.
2983 * if we dont clear scanning status bit here all next scan
2986 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
2987 clear_bit(STATUS_SCANNING
, &priv
->status
);
2989 /* inform mac80211 scan aborted */
2990 queue_work(priv
->workqueue
, &priv
->scan_completed
);
2991 mutex_unlock(&priv
->mutex
);
2994 static void iwl3945_bg_up(struct work_struct
*data
)
2996 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
2998 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3001 mutex_lock(&priv
->mutex
);
3003 mutex_unlock(&priv
->mutex
);
3006 static void iwl3945_bg_restart(struct work_struct
*data
)
3008 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3010 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3013 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3014 mutex_lock(&priv
->mutex
);
3017 mutex_unlock(&priv
->mutex
);
3019 ieee80211_restart_hw(priv
->hw
);
3022 queue_work(priv
->workqueue
, &priv
->up
);
3026 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3028 struct iwl_priv
*priv
=
3029 container_of(data
, struct iwl_priv
, rx_replenish
);
3031 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3034 mutex_lock(&priv
->mutex
);
3035 iwl3945_rx_replenish(priv
);
3036 mutex_unlock(&priv
->mutex
);
3039 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3041 void iwl3945_post_associate(struct iwl_priv
*priv
)
3044 struct ieee80211_conf
*conf
= NULL
;
3046 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3047 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3052 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3053 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3055 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3058 if (!priv
->vif
|| !priv
->is_open
)
3061 iwl_scan_cancel_timeout(priv
, 200);
3063 conf
= ieee80211_get_hw_conf(priv
->hw
);
3065 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3066 iwlcore_commit_rxon(priv
);
3068 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3069 iwl3945_setup_rxon_timing(priv
);
3070 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3071 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3073 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3074 "Attempting to continue.\n");
3076 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3078 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3080 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3081 priv
->assoc_id
, priv
->beacon_int
);
3083 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3084 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3086 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3088 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3089 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3090 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3092 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3094 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3095 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3099 iwlcore_commit_rxon(priv
);
3101 switch (priv
->iw_mode
) {
3102 case NL80211_IFTYPE_STATION
:
3103 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3106 case NL80211_IFTYPE_ADHOC
:
3109 iwl_add_station(priv
, priv
->bssid
, 0, CMD_SYNC
, NULL
);
3110 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3111 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3112 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3114 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3115 iwl3945_send_beacon_cmd(priv
);
3120 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3121 __func__
, priv
->iw_mode
);
3125 iwl_activate_qos(priv
, 0);
3127 /* we have just associated, don't start scan too early */
3128 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3131 /*****************************************************************************
3133 * mac80211 entry point functions
3135 *****************************************************************************/
3137 #define UCODE_READY_TIMEOUT (2 * HZ)
3139 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3141 struct iwl_priv
*priv
= hw
->priv
;
3144 IWL_DEBUG_MAC80211(priv
, "enter\n");
3146 /* we should be verifying the device is ready to be opened */
3147 mutex_lock(&priv
->mutex
);
3149 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3150 * ucode filename and max sizes are card-specific. */
3152 if (!priv
->ucode_code
.len
) {
3153 ret
= iwl3945_read_ucode(priv
);
3155 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3156 mutex_unlock(&priv
->mutex
);
3157 goto out_release_irq
;
3161 ret
= __iwl3945_up(priv
);
3163 mutex_unlock(&priv
->mutex
);
3166 goto out_release_irq
;
3168 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3170 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3171 * mac80211 will not be run successfully. */
3172 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3173 test_bit(STATUS_READY
, &priv
->status
),
3174 UCODE_READY_TIMEOUT
);
3176 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3178 "Wait for START_ALIVE timeout after %dms.\n",
3179 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3181 goto out_release_irq
;
3185 /* ucode is running and will send rfkill notifications,
3186 * no need to poll the killswitch state anymore */
3187 cancel_delayed_work(&priv
->rfkill_poll
);
3190 IWL_DEBUG_MAC80211(priv
, "leave\n");
3195 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3199 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3201 struct iwl_priv
*priv
= hw
->priv
;
3203 IWL_DEBUG_MAC80211(priv
, "enter\n");
3205 if (!priv
->is_open
) {
3206 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3212 if (iwl_is_ready_rf(priv
)) {
3213 /* stop mac, cancel any scan request and clear
3214 * RXON_FILTER_ASSOC_MSK BIT
3216 mutex_lock(&priv
->mutex
);
3217 iwl_scan_cancel_timeout(priv
, 100);
3218 mutex_unlock(&priv
->mutex
);
3223 flush_workqueue(priv
->workqueue
);
3225 /* start polling the killswitch state again */
3226 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3227 round_jiffies_relative(2 * HZ
));
3229 IWL_DEBUG_MAC80211(priv
, "leave\n");
3232 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3234 struct iwl_priv
*priv
= hw
->priv
;
3236 IWL_DEBUG_MAC80211(priv
, "enter\n");
3238 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3239 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3241 if (iwl3945_tx_skb(priv
, skb
))
3242 dev_kfree_skb_any(skb
);
3244 IWL_DEBUG_MAC80211(priv
, "leave\n");
3245 return NETDEV_TX_OK
;
3248 void iwl3945_config_ap(struct iwl_priv
*priv
)
3252 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3255 /* The following should be done only at AP bring up */
3256 if (!(iwl_is_associated(priv
))) {
3258 /* RXON - unassoc (to set timing command) */
3259 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3260 iwlcore_commit_rxon(priv
);
3263 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3264 iwl3945_setup_rxon_timing(priv
);
3265 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3266 sizeof(priv
->rxon_timing
),
3267 &priv
->rxon_timing
);
3269 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3270 "Attempting to continue.\n");
3272 /* FIXME: what should be the assoc_id for AP? */
3273 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3274 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3275 priv
->staging_rxon
.flags
|=
3276 RXON_FLG_SHORT_PREAMBLE_MSK
;
3278 priv
->staging_rxon
.flags
&=
3279 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3281 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3282 if (priv
->assoc_capability
&
3283 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3284 priv
->staging_rxon
.flags
|=
3285 RXON_FLG_SHORT_SLOT_MSK
;
3287 priv
->staging_rxon
.flags
&=
3288 ~RXON_FLG_SHORT_SLOT_MSK
;
3290 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3291 priv
->staging_rxon
.flags
&=
3292 ~RXON_FLG_SHORT_SLOT_MSK
;
3294 /* restore RXON assoc */
3295 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3296 iwlcore_commit_rxon(priv
);
3297 iwl_add_station(priv
, iwl_bcast_addr
, 0, CMD_SYNC
, NULL
);
3299 iwl3945_send_beacon_cmd(priv
);
3301 /* FIXME - we need to add code here to detect a totally new
3302 * configuration, reset the AP, unassoc, rxon timing, assoc,
3303 * clear sta table, add BCAST sta... */
3306 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3307 struct ieee80211_vif
*vif
,
3308 struct ieee80211_sta
*sta
,
3309 struct ieee80211_key_conf
*key
)
3311 struct iwl_priv
*priv
= hw
->priv
;
3314 u8 sta_id
= IWL_INVALID_STATION
;
3317 IWL_DEBUG_MAC80211(priv
, "enter\n");
3319 if (iwl3945_mod_params
.sw_crypto
) {
3320 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3324 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3325 static_key
= !iwl_is_associated(priv
);
3328 sta_id
= iwl_find_station(priv
, addr
);
3329 if (sta_id
== IWL_INVALID_STATION
) {
3330 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3336 mutex_lock(&priv
->mutex
);
3337 iwl_scan_cancel_timeout(priv
, 100);
3338 mutex_unlock(&priv
->mutex
);
3343 ret
= iwl3945_set_static_key(priv
, key
);
3345 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3346 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3350 ret
= iwl3945_remove_static_key(priv
);
3352 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3353 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3359 IWL_DEBUG_MAC80211(priv
, "leave\n");
3364 /*****************************************************************************
3368 *****************************************************************************/
3370 #ifdef CONFIG_IWLWIFI_DEBUG
3373 * The following adds a new attribute to the sysfs representation
3374 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3375 * used for controlling the debug level.
3377 * See the level definitions in iwl for details.
3379 static ssize_t
show_debug_level(struct device
*d
,
3380 struct device_attribute
*attr
, char *buf
)
3382 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3384 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
3386 static ssize_t
store_debug_level(struct device
*d
,
3387 struct device_attribute
*attr
,
3388 const char *buf
, size_t count
)
3390 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3394 ret
= strict_strtoul(buf
, 0, &val
);
3396 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3398 priv
->debug_level
= val
;
3400 return strnlen(buf
, count
);
3403 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3404 show_debug_level
, store_debug_level
);
3406 #endif /* CONFIG_IWLWIFI_DEBUG */
3408 static ssize_t
show_temperature(struct device
*d
,
3409 struct device_attribute
*attr
, char *buf
)
3411 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3413 if (!iwl_is_alive(priv
))
3416 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3419 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3421 static ssize_t
show_tx_power(struct device
*d
,
3422 struct device_attribute
*attr
, char *buf
)
3424 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3425 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3428 static ssize_t
store_tx_power(struct device
*d
,
3429 struct device_attribute
*attr
,
3430 const char *buf
, size_t count
)
3432 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3433 char *p
= (char *)buf
;
3436 val
= simple_strtoul(p
, &p
, 10);
3438 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3440 iwl3945_hw_reg_set_txpower(priv
, val
);
3445 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3447 static ssize_t
show_flags(struct device
*d
,
3448 struct device_attribute
*attr
, char *buf
)
3450 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3452 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3455 static ssize_t
store_flags(struct device
*d
,
3456 struct device_attribute
*attr
,
3457 const char *buf
, size_t count
)
3459 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3460 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3462 mutex_lock(&priv
->mutex
);
3463 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3464 /* Cancel any currently running scans... */
3465 if (iwl_scan_cancel_timeout(priv
, 100))
3466 IWL_WARN(priv
, "Could not cancel scan.\n");
3468 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3470 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3471 iwlcore_commit_rxon(priv
);
3474 mutex_unlock(&priv
->mutex
);
3479 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3481 static ssize_t
show_filter_flags(struct device
*d
,
3482 struct device_attribute
*attr
, char *buf
)
3484 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3486 return sprintf(buf
, "0x%04X\n",
3487 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3490 static ssize_t
store_filter_flags(struct device
*d
,
3491 struct device_attribute
*attr
,
3492 const char *buf
, size_t count
)
3494 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3495 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3497 mutex_lock(&priv
->mutex
);
3498 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3499 /* Cancel any currently running scans... */
3500 if (iwl_scan_cancel_timeout(priv
, 100))
3501 IWL_WARN(priv
, "Could not cancel scan.\n");
3503 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3504 "0x%04X\n", filter_flags
);
3505 priv
->staging_rxon
.filter_flags
=
3506 cpu_to_le32(filter_flags
);
3507 iwlcore_commit_rxon(priv
);
3510 mutex_unlock(&priv
->mutex
);
3515 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3516 store_filter_flags
);
3518 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3520 static ssize_t
show_measurement(struct device
*d
,
3521 struct device_attribute
*attr
, char *buf
)
3523 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3524 struct iwl_spectrum_notification measure_report
;
3525 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3526 u8
*data
= (u8
*)&measure_report
;
3527 unsigned long flags
;
3529 spin_lock_irqsave(&priv
->lock
, flags
);
3530 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3531 spin_unlock_irqrestore(&priv
->lock
, flags
);
3534 memcpy(&measure_report
, &priv
->measure_report
, size
);
3535 priv
->measurement_status
= 0;
3536 spin_unlock_irqrestore(&priv
->lock
, flags
);
3538 while (size
&& (PAGE_SIZE
- len
)) {
3539 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3540 PAGE_SIZE
- len
, 1);
3542 if (PAGE_SIZE
- len
)
3546 size
-= min(size
, 16U);
3552 static ssize_t
store_measurement(struct device
*d
,
3553 struct device_attribute
*attr
,
3554 const char *buf
, size_t count
)
3556 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3557 struct ieee80211_measurement_params params
= {
3558 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3559 .start_time
= cpu_to_le64(priv
->last_tsf
),
3560 .duration
= cpu_to_le16(1),
3562 u8 type
= IWL_MEASURE_BASIC
;
3568 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3569 channel
= simple_strtoul(p
, NULL
, 0);
3571 params
.channel
= channel
;
3574 while (*p
&& *p
!= ' ')
3577 type
= simple_strtoul(p
+ 1, NULL
, 0);
3580 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3581 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3582 iwl3945_get_measurement(priv
, ¶ms
, type
);
3587 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3588 show_measurement
, store_measurement
);
3589 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3591 static ssize_t
store_retry_rate(struct device
*d
,
3592 struct device_attribute
*attr
,
3593 const char *buf
, size_t count
)
3595 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3597 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3598 if (priv
->retry_rate
<= 0)
3599 priv
->retry_rate
= 1;
3604 static ssize_t
show_retry_rate(struct device
*d
,
3605 struct device_attribute
*attr
, char *buf
)
3607 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3608 return sprintf(buf
, "%d", priv
->retry_rate
);
3611 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3615 static ssize_t
store_power_level(struct device
*d
,
3616 struct device_attribute
*attr
,
3617 const char *buf
, size_t count
)
3619 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3624 mutex_lock(&priv
->mutex
);
3626 ret
= strict_strtoul(buf
, 10, &mode
);
3630 ret
= iwl_power_set_user_mode(priv
, mode
);
3632 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3638 mutex_unlock(&priv
->mutex
);
3642 static ssize_t
show_power_level(struct device
*d
,
3643 struct device_attribute
*attr
, char *buf
)
3645 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3646 int level
= priv
->power_data
.power_mode
;
3649 p
+= sprintf(p
, "%d\n", level
);
3653 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
,
3654 show_power_level
, store_power_level
);
3656 #define MAX_WX_STRING 80
3658 /* Values are in microsecond */
3659 static const s32 timeout_duration
[] = {
3666 static const s32 period_duration
[] = {
3674 static ssize_t
show_channels(struct device
*d
,
3675 struct device_attribute
*attr
, char *buf
)
3677 /* all this shit doesn't belong into sysfs anyway */
3681 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3683 static ssize_t
show_statistics(struct device
*d
,
3684 struct device_attribute
*attr
, char *buf
)
3686 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3687 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3688 u32 len
= 0, ofs
= 0;
3689 u8
*data
= (u8
*)&priv
->statistics_39
;
3692 if (!iwl_is_alive(priv
))
3695 mutex_lock(&priv
->mutex
);
3696 rc
= iwl_send_statistics_request(priv
, 0);
3697 mutex_unlock(&priv
->mutex
);
3701 "Error sending statistics request: 0x%08X\n", rc
);
3705 while (size
&& (PAGE_SIZE
- len
)) {
3706 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3707 PAGE_SIZE
- len
, 1);
3709 if (PAGE_SIZE
- len
)
3713 size
-= min(size
, 16U);
3719 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3721 static ssize_t
show_antenna(struct device
*d
,
3722 struct device_attribute
*attr
, char *buf
)
3724 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3726 if (!iwl_is_alive(priv
))
3729 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3732 static ssize_t
store_antenna(struct device
*d
,
3733 struct device_attribute
*attr
,
3734 const char *buf
, size_t count
)
3736 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3742 if (sscanf(buf
, "%1i", &ant
) != 1) {
3743 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3747 if ((ant
>= 0) && (ant
<= 2)) {
3748 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3749 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3751 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3757 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3759 static ssize_t
show_status(struct device
*d
,
3760 struct device_attribute
*attr
, char *buf
)
3762 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3763 if (!iwl_is_alive(priv
))
3765 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3768 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3770 static ssize_t
dump_error_log(struct device
*d
,
3771 struct device_attribute
*attr
,
3772 const char *buf
, size_t count
)
3774 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3775 char *p
= (char *)buf
;
3778 iwl3945_dump_nic_error_log(priv
);
3780 return strnlen(buf
, count
);
3783 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3785 static ssize_t
dump_event_log(struct device
*d
,
3786 struct device_attribute
*attr
,
3787 const char *buf
, size_t count
)
3789 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3790 char *p
= (char *)buf
;
3793 iwl3945_dump_nic_event_log(priv
);
3795 return strnlen(buf
, count
);
3798 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
3800 /*****************************************************************************
3802 * driver setup and tear down
3804 *****************************************************************************/
3806 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3808 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3810 init_waitqueue_head(&priv
->wait_command_queue
);
3812 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
3813 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3814 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3815 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3816 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3817 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3818 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3819 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3820 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3821 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3822 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3824 iwl3945_hw_setup_deferred_work(priv
);
3826 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3827 iwl3945_irq_tasklet
, (unsigned long)priv
);
3830 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3832 iwl3945_hw_cancel_deferred_work(priv
);
3834 cancel_delayed_work_sync(&priv
->init_alive_start
);
3835 cancel_delayed_work(&priv
->scan_check
);
3836 cancel_delayed_work(&priv
->alive_start
);
3837 cancel_work_sync(&priv
->beacon_update
);
3840 static struct attribute
*iwl3945_sysfs_entries
[] = {
3841 &dev_attr_antenna
.attr
,
3842 &dev_attr_channels
.attr
,
3843 &dev_attr_dump_errors
.attr
,
3844 &dev_attr_dump_events
.attr
,
3845 &dev_attr_flags
.attr
,
3846 &dev_attr_filter_flags
.attr
,
3847 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3848 &dev_attr_measurement
.attr
,
3850 &dev_attr_power_level
.attr
,
3851 &dev_attr_retry_rate
.attr
,
3852 &dev_attr_statistics
.attr
,
3853 &dev_attr_status
.attr
,
3854 &dev_attr_temperature
.attr
,
3855 &dev_attr_tx_power
.attr
,
3856 #ifdef CONFIG_IWLWIFI_DEBUG
3857 &dev_attr_debug_level
.attr
,
3862 static struct attribute_group iwl3945_attribute_group
= {
3863 .name
= NULL
, /* put in device directory */
3864 .attrs
= iwl3945_sysfs_entries
,
3867 static struct ieee80211_ops iwl3945_hw_ops
= {
3868 .tx
= iwl3945_mac_tx
,
3869 .start
= iwl3945_mac_start
,
3870 .stop
= iwl3945_mac_stop
,
3871 .add_interface
= iwl_mac_add_interface
,
3872 .remove_interface
= iwl_mac_remove_interface
,
3873 .config
= iwl_mac_config
,
3874 .configure_filter
= iwl_configure_filter
,
3875 .set_key
= iwl3945_mac_set_key
,
3876 .get_tx_stats
= iwl_mac_get_tx_stats
,
3877 .conf_tx
= iwl_mac_conf_tx
,
3878 .reset_tsf
= iwl_mac_reset_tsf
,
3879 .bss_info_changed
= iwl_bss_info_changed
,
3880 .hw_scan
= iwl_mac_hw_scan
3883 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3886 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3888 priv
->retry_rate
= 1;
3889 priv
->ibss_beacon
= NULL
;
3891 spin_lock_init(&priv
->lock
);
3892 spin_lock_init(&priv
->sta_lock
);
3893 spin_lock_init(&priv
->hcmd_lock
);
3895 INIT_LIST_HEAD(&priv
->free_frames
);
3897 mutex_init(&priv
->mutex
);
3899 /* Clear the driver's (not device's) station table */
3900 iwl_clear_stations_table(priv
);
3902 priv
->data_retry_limit
= -1;
3903 priv
->ieee_channels
= NULL
;
3904 priv
->ieee_rates
= NULL
;
3905 priv
->band
= IEEE80211_BAND_2GHZ
;
3907 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3909 iwl_reset_qos(priv
);
3911 priv
->qos_data
.qos_active
= 0;
3912 priv
->qos_data
.qos_cap
.val
= 0;
3914 priv
->rates_mask
= IWL_RATES_MASK
;
3915 /* If power management is turned on, default to CAM mode */
3916 priv
->power_mode
= IWL_POWER_MODE_CAM
;
3917 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3919 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3920 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3925 ret
= iwl_init_channel_map(priv
);
3927 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3931 /* Set up txpower settings in driver for all channels */
3932 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3934 goto err_free_channel_map
;
3937 ret
= iwlcore_init_geos(priv
);
3939 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3940 goto err_free_channel_map
;
3942 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3946 err_free_channel_map
:
3947 iwl_free_channel_map(priv
);
3952 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3955 struct ieee80211_hw
*hw
= priv
->hw
;
3957 hw
->rate_control_algorithm
= "iwl-3945-rs";
3958 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3960 /* Tell mac80211 our characteristics */
3961 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3962 IEEE80211_HW_NOISE_DBM
|
3963 IEEE80211_HW_SPECTRUM_MGMT
;
3965 hw
->wiphy
->interface_modes
=
3966 BIT(NL80211_IFTYPE_STATION
) |
3967 BIT(NL80211_IFTYPE_ADHOC
);
3969 hw
->wiphy
->custom_regulatory
= true;
3971 /* Firmware does not support this */
3972 hw
->wiphy
->disable_beacon_hints
= true;
3974 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3975 /* we create the 802.11 header and a zero-length SSID element */
3976 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
3978 /* Default value; 4 EDCA QOS priorities */
3981 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3982 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3983 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3985 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3986 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3987 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3989 ret
= ieee80211_register_hw(priv
->hw
);
3991 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3994 priv
->mac80211_registered
= 1;
3999 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4002 struct iwl_priv
*priv
;
4003 struct ieee80211_hw
*hw
;
4004 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
4005 struct iwl3945_eeprom
*eeprom
;
4006 unsigned long flags
;
4008 /***********************
4009 * 1. Allocating HW data
4010 * ********************/
4012 /* mac80211 allocates memory for this device instance, including
4013 * space for this driver's private structure */
4014 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
4016 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
4021 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
4023 if ((iwl3945_mod_params
.num_of_queues
> IWL39_MAX_NUM_QUEUES
) ||
4024 (iwl3945_mod_params
.num_of_queues
< IWL39_MIN_NUM_QUEUES
)) {
4026 "invalid queues_num, should be between %d and %d\n",
4027 IWL39_MIN_NUM_QUEUES
, IWL39_MAX_NUM_QUEUES
);
4029 goto out_ieee80211_free_hw
;
4033 * Disabling hardware scan means that mac80211 will perform scans
4034 * "the hard way", rather than using device's scan.
4036 if (iwl3945_mod_params
.disable_hw_scan
) {
4037 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
4038 iwl3945_hw_ops
.hw_scan
= NULL
;
4042 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
4044 priv
->pci_dev
= pdev
;
4045 priv
->inta_mask
= CSR_INI_SET_MASK
;
4047 #ifdef CONFIG_IWLWIFI_DEBUG
4048 priv
->debug_level
= iwl3945_mod_params
.debug
;
4049 atomic_set(&priv
->restrict_refcnt
, 0);
4052 /***************************
4053 * 2. Initializing PCI bus
4054 * *************************/
4055 if (pci_enable_device(pdev
)) {
4057 goto out_ieee80211_free_hw
;
4060 pci_set_master(pdev
);
4062 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4064 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4066 IWL_WARN(priv
, "No suitable DMA available.\n");
4067 goto out_pci_disable_device
;
4070 pci_set_drvdata(pdev
, priv
);
4071 err
= pci_request_regions(pdev
, DRV_NAME
);
4073 goto out_pci_disable_device
;
4075 /***********************
4076 * 3. Read REV Register
4077 * ********************/
4078 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4079 if (!priv
->hw_base
) {
4081 goto out_pci_release_regions
;
4084 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4085 (unsigned long long) pci_resource_len(pdev
, 0));
4086 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4088 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4089 * PCI Tx retries from interfering with C3 CPU state */
4090 pci_write_config_byte(pdev
, 0x41, 0x00);
4092 /* this spin lock will be used in apm_ops.init and EEPROM access
4093 * we should init now
4095 spin_lock_init(&priv
->reg_lock
);
4098 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
4100 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
4104 /***********************
4106 * ********************/
4108 /* Read the EEPROM */
4109 err
= iwl_eeprom_init(priv
);
4111 IWL_ERR(priv
, "Unable to init EEPROM\n");
4114 /* MAC Address location in EEPROM same for 3945/4965 */
4115 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4116 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4117 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4118 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4120 /***********************
4121 * 5. Setup HW Constants
4122 * ********************/
4123 /* Device-specific setup */
4124 if (iwl3945_hw_set_hw_params(priv
)) {
4125 IWL_ERR(priv
, "failed to set hw settings\n");
4126 goto out_eeprom_free
;
4129 /***********************
4131 * ********************/
4133 err
= iwl3945_init_drv(priv
);
4135 IWL_ERR(priv
, "initializing driver failed\n");
4136 goto out_unset_hw_params
;
4139 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4142 /***********************
4144 * ********************/
4146 spin_lock_irqsave(&priv
->lock
, flags
);
4147 iwl_disable_interrupts(priv
);
4148 spin_unlock_irqrestore(&priv
->lock
, flags
);
4150 pci_enable_msi(priv
->pci_dev
);
4152 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4153 IRQF_SHARED
, DRV_NAME
, priv
);
4155 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4156 goto out_disable_msi
;
4159 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4161 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4162 goto out_release_irq
;
4165 iwl_set_rxon_channel(priv
,
4166 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4167 iwl3945_setup_deferred_work(priv
);
4168 iwl3945_setup_rx_handlers(priv
);
4170 /*********************************
4171 * 8. Setup and Register mac80211
4172 * *******************************/
4174 iwl_enable_interrupts(priv
);
4176 err
= iwl3945_setup_mac(priv
);
4178 goto out_remove_sysfs
;
4180 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4182 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4184 /* Start monitoring the killswitch */
4185 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4191 destroy_workqueue(priv
->workqueue
);
4192 priv
->workqueue
= NULL
;
4193 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4195 free_irq(priv
->pci_dev
->irq
, priv
);
4197 pci_disable_msi(priv
->pci_dev
);
4198 iwlcore_free_geos(priv
);
4199 iwl_free_channel_map(priv
);
4200 out_unset_hw_params
:
4201 iwl3945_unset_hw_params(priv
);
4203 iwl_eeprom_free(priv
);
4205 pci_iounmap(pdev
, priv
->hw_base
);
4206 out_pci_release_regions
:
4207 pci_release_regions(pdev
);
4208 out_pci_disable_device
:
4209 pci_set_drvdata(pdev
, NULL
);
4210 pci_disable_device(pdev
);
4211 out_ieee80211_free_hw
:
4212 ieee80211_free_hw(priv
->hw
);
4217 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4219 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4220 unsigned long flags
;
4225 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4227 iwl_dbgfs_unregister(priv
);
4229 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4231 if (priv
->mac80211_registered
) {
4232 ieee80211_unregister_hw(priv
->hw
);
4233 priv
->mac80211_registered
= 0;
4238 /* make sure we flush any pending irq or
4239 * tasklet for the driver
4241 spin_lock_irqsave(&priv
->lock
, flags
);
4242 iwl_disable_interrupts(priv
);
4243 spin_unlock_irqrestore(&priv
->lock
, flags
);
4245 iwl_synchronize_irq(priv
);
4247 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4249 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4251 iwl3945_dealloc_ucode_pci(priv
);
4254 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4255 iwl3945_hw_txq_ctx_free(priv
);
4257 iwl3945_unset_hw_params(priv
);
4258 iwl_clear_stations_table(priv
);
4260 /*netif_stop_queue(dev); */
4261 flush_workqueue(priv
->workqueue
);
4263 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4264 * priv->workqueue... so we can't take down the workqueue
4266 destroy_workqueue(priv
->workqueue
);
4267 priv
->workqueue
= NULL
;
4269 free_irq(pdev
->irq
, priv
);
4270 pci_disable_msi(pdev
);
4272 pci_iounmap(pdev
, priv
->hw_base
);
4273 pci_release_regions(pdev
);
4274 pci_disable_device(pdev
);
4275 pci_set_drvdata(pdev
, NULL
);
4277 iwl_free_channel_map(priv
);
4278 iwlcore_free_geos(priv
);
4280 if (priv
->ibss_beacon
)
4281 dev_kfree_skb(priv
->ibss_beacon
);
4283 ieee80211_free_hw(priv
->hw
);
4287 /*****************************************************************************
4289 * driver and module entry point
4291 *****************************************************************************/
4293 static struct pci_driver iwl3945_driver
= {
4295 .id_table
= iwl3945_hw_card_ids
,
4296 .probe
= iwl3945_pci_probe
,
4297 .remove
= __devexit_p(iwl3945_pci_remove
),
4299 .suspend
= iwl_pci_suspend
,
4300 .resume
= iwl_pci_resume
,
4304 static int __init
iwl3945_init(void)
4308 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4309 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4311 ret
= iwl3945_rate_control_register();
4313 printk(KERN_ERR DRV_NAME
4314 "Unable to register rate control algorithm: %d\n", ret
);
4318 ret
= pci_register_driver(&iwl3945_driver
);
4320 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4321 goto error_register
;
4327 iwl3945_rate_control_unregister();
4331 static void __exit
iwl3945_exit(void)
4333 pci_unregister_driver(&iwl3945_driver
);
4334 iwl3945_rate_control_unregister();
4337 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4339 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, 0444);
4340 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4341 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, 0444);
4342 MODULE_PARM_DESC(swcrypto
,
4343 "using software crypto (default 1 [software])\n");
4344 module_param_named(debug
, iwl3945_mod_params
.debug
, uint
, 0444);
4345 MODULE_PARM_DESC(debug
, "debug output mask");
4346 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
, int, 0444);
4347 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4349 module_param_named(queues_num
, iwl3945_mod_params
.num_of_queues
, int, 0444);
4350 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
4352 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, 0444);
4353 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4355 module_exit(iwl3945_exit
);
4356 module_init(iwl3945_init
);