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/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <net/lib80211.h>
46 #include <net/mac80211.h>
48 #include <asm/div64.h>
50 #define DRV_NAME "iwl3945"
53 #include "iwl-3945-fh.h"
54 #include "iwl-commands.h"
57 #include "iwl-helpers.h"
62 * module name, copyright, version, etc.
65 #define DRV_DESCRIPTION \
66 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
68 #ifdef CONFIG_IWLWIFI_DEBUG
74 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
80 #define IWL39_VERSION "1.2.26k" VD VS
81 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
82 #define DRV_AUTHOR "<ilw@linux.intel.com>"
83 #define DRV_VERSION IWL39_VERSION
86 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
87 MODULE_VERSION(DRV_VERSION
);
88 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
89 MODULE_LICENSE("GPL");
91 /* module parameters */
92 struct iwl_mod_params iwl3945_mod_params
= {
93 .num_of_queues
= IWL39_NUM_QUEUES
, /* Not used */
96 /* the rest are 0 by default */
100 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
101 * @priv: eeprom and antenna fields are used to determine antenna flags
103 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
104 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
106 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
107 * IWL_ANTENNA_MAIN - Force MAIN antenna
108 * IWL_ANTENNA_AUX - Force AUX antenna
110 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
112 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
114 switch (iwl3945_mod_params
.antenna
) {
115 case IWL_ANTENNA_DIVERSITY
:
118 case IWL_ANTENNA_MAIN
:
119 if (eeprom
->antenna_switch_type
)
120 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
121 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
123 case IWL_ANTENNA_AUX
:
124 if (eeprom
->antenna_switch_type
)
125 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
126 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
129 /* bad antenna selector value */
130 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
131 iwl3945_mod_params
.antenna
);
133 return 0; /* "diversity" is default if error */
136 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
137 struct ieee80211_key_conf
*keyconf
,
141 __le16 key_flags
= 0;
144 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
145 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
147 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
148 key_flags
|= STA_KEY_MULTICAST_MSK
;
150 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
151 keyconf
->hw_key_idx
= keyconf
->keyidx
;
152 key_flags
&= ~STA_KEY_FLG_INVALID
;
154 spin_lock_irqsave(&priv
->sta_lock
, flags
);
155 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
156 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
157 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
160 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
163 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
164 == STA_KEY_FLG_NO_ENC
)
165 priv
->stations
[sta_id
].sta
.key
.key_offset
=
166 iwl_get_free_ucode_key_index(priv
);
167 /* else, we are overriding an existing key => no need to allocated room
170 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
171 "no space for a new key");
173 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
174 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
175 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
177 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
179 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
181 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
186 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
187 struct ieee80211_key_conf
*keyconf
,
193 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
194 struct ieee80211_key_conf
*keyconf
,
200 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
204 spin_lock_irqsave(&priv
->sta_lock
, flags
);
205 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
206 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
207 sizeof(struct iwl4965_keyinfo
));
208 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
209 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
210 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
211 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
213 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
214 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, 0);
218 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
219 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
223 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
225 switch (keyconf
->alg
) {
227 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
230 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
233 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
236 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
240 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
241 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
247 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
249 int ret
= -EOPNOTSUPP
;
254 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
255 struct ieee80211_key_conf
*key
)
257 if (key
->alg
== ALG_WEP
)
260 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
264 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
266 struct list_head
*element
;
268 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
271 while (!list_empty(&priv
->free_frames
)) {
272 element
= priv
->free_frames
.next
;
274 kfree(list_entry(element
, struct iwl3945_frame
, list
));
275 priv
->frames_count
--;
278 if (priv
->frames_count
) {
279 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
281 priv
->frames_count
= 0;
285 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
287 struct iwl3945_frame
*frame
;
288 struct list_head
*element
;
289 if (list_empty(&priv
->free_frames
)) {
290 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
292 IWL_ERR(priv
, "Could not allocate frame!\n");
296 priv
->frames_count
++;
300 element
= priv
->free_frames
.next
;
302 return list_entry(element
, struct iwl3945_frame
, list
);
305 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
307 memset(frame
, 0, sizeof(*frame
));
308 list_add(&frame
->list
, &priv
->free_frames
);
311 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
312 struct ieee80211_hdr
*hdr
,
316 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
317 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
318 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
321 if (priv
->ibss_beacon
->len
> left
)
324 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
326 return priv
->ibss_beacon
->len
;
329 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
331 struct iwl3945_frame
*frame
;
332 unsigned int frame_size
;
336 frame
= iwl3945_get_free_frame(priv
);
339 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
344 rate
= iwl_rate_get_lowest_plcp(priv
);
346 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
348 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
351 iwl3945_free_frame(priv
, frame
);
356 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
358 if (priv
->shared_virt
)
359 pci_free_consistent(priv
->pci_dev
,
360 sizeof(struct iwl3945_shared
),
365 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
366 struct ieee80211_tx_info
*info
,
367 struct iwl_device_cmd
*cmd
,
368 struct sk_buff
*skb_frag
,
371 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
372 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
374 switch (keyinfo
->alg
) {
376 tx
->sec_ctl
= TX_CMD_SEC_CCM
;
377 memcpy(tx
->key
, keyinfo
->key
, keyinfo
->keylen
);
378 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
385 tx
->sec_ctl
= TX_CMD_SEC_WEP
|
386 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
388 if (keyinfo
->keylen
== 13)
389 tx
->sec_ctl
|= TX_CMD_SEC_KEY128
;
391 memcpy(&tx
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
393 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
394 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
398 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
404 * handle build REPLY_TX command notification.
406 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
407 struct iwl_device_cmd
*cmd
,
408 struct ieee80211_tx_info
*info
,
409 struct ieee80211_hdr
*hdr
, u8 std_id
)
411 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
412 __le32 tx_flags
= tx
->tx_flags
;
413 __le16 fc
= hdr
->frame_control
;
414 u8 rc_flags
= info
->control
.rates
[0].flags
;
416 tx
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
417 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
418 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
419 if (ieee80211_is_mgmt(fc
))
420 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
421 if (ieee80211_is_probe_resp(fc
) &&
422 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
423 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
425 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
426 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
430 if (ieee80211_has_morefrags(fc
))
431 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
433 if (ieee80211_is_data_qos(fc
)) {
434 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
435 tx
->tid_tspec
= qc
[0] & 0xf;
436 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
438 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
441 if (rc_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
442 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
443 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
444 } else if (rc_flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
445 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
446 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
449 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
450 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
452 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
453 if (ieee80211_is_mgmt(fc
)) {
454 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
455 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
457 tx
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
459 tx
->timeout
.pm_frame_timeout
= 0;
460 #ifdef CONFIG_IWLWIFI_LEDS
461 priv
->rxtxpackets
+= le16_to_cpu(cmd
->cmd
.tx
.len
);
466 tx
->tx_flags
= tx_flags
;
467 tx
->next_frame_len
= 0;
471 * start REPLY_TX command process
473 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
475 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
476 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
477 struct iwl3945_tx_cmd
*tx
;
478 struct iwl_tx_queue
*txq
= NULL
;
479 struct iwl_queue
*q
= NULL
;
480 struct iwl_device_cmd
*out_cmd
;
481 struct iwl_cmd_meta
*out_meta
;
482 dma_addr_t phys_addr
;
483 dma_addr_t txcmd_phys
;
484 int txq_id
= skb_get_queue_mapping(skb
);
485 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
492 u8 wait_write_ptr
= 0;
497 spin_lock_irqsave(&priv
->lock
, flags
);
498 if (iwl_is_rfkill(priv
)) {
499 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
503 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
504 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
508 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
511 fc
= hdr
->frame_control
;
513 #ifdef CONFIG_IWLWIFI_DEBUG
514 if (ieee80211_is_auth(fc
))
515 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
516 else if (ieee80211_is_assoc_req(fc
))
517 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
518 else if (ieee80211_is_reassoc_req(fc
))
519 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
522 /* drop all non-injected data frame if we are not associated */
523 if (ieee80211_is_data(fc
) &&
524 !(info
->flags
& IEEE80211_TX_CTL_INJECTED
) &&
525 (!iwl_is_associated(priv
) ||
526 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
527 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
531 spin_unlock_irqrestore(&priv
->lock
, flags
);
533 hdr_len
= ieee80211_hdrlen(fc
);
535 /* Find (or create) index into station table for destination station */
536 if (info
->flags
& IEEE80211_TX_CTL_INJECTED
)
537 sta_id
= priv
->hw_params
.bcast_sta_id
;
539 sta_id
= iwl_get_sta_id(priv
, hdr
);
540 if (sta_id
== IWL_INVALID_STATION
) {
541 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
546 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
548 if (ieee80211_is_data_qos(fc
)) {
549 qc
= ieee80211_get_qos_ctl(hdr
);
550 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
551 if (unlikely(tid
>= MAX_TID_COUNT
))
553 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
555 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
557 cpu_to_le16(IEEE80211_SCTL_FRAG
));
561 /* Descriptor for chosen Tx queue */
562 txq
= &priv
->txq
[txq_id
];
565 spin_lock_irqsave(&priv
->lock
, flags
);
567 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
569 /* Set up driver data for this TFD */
570 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
571 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
573 /* Init first empty entry in queue's array of Tx/cmd buffers */
574 out_cmd
= txq
->cmd
[idx
];
575 out_meta
= &txq
->meta
[idx
];
576 tx
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
577 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
578 memset(tx
, 0, sizeof(*tx
));
581 * Set up the Tx-command (not MAC!) header.
582 * Store the chosen Tx queue and TFD index within the sequence field;
583 * after Tx, uCode's Tx response will return this value so driver can
584 * locate the frame within the tx queue and do post-tx processing.
586 out_cmd
->hdr
.cmd
= REPLY_TX
;
587 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
588 INDEX_TO_SEQ(q
->write_ptr
)));
590 /* Copy MAC header from skb into command buffer */
591 memcpy(tx
->hdr
, hdr
, hdr_len
);
594 if (info
->control
.hw_key
)
595 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
597 /* TODO need this for burst mode later on */
598 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
600 /* set is_hcca to 0; it probably will never be implemented */
601 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
603 /* Total # bytes to be transmitted */
605 tx
->len
= cpu_to_le16(len
);
607 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
608 iwl_update_stats(priv
, true, fc
, len
);
609 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
610 tx
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
612 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
613 txq
->need_update
= 1;
615 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
618 txq
->need_update
= 0;
621 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
622 le16_to_cpu(out_cmd
->hdr
.sequence
));
623 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx
->tx_flags
));
624 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx
, sizeof(*tx
));
625 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx
->hdr
,
626 ieee80211_hdrlen(fc
));
629 * Use the first empty entry in this queue's command buffer array
630 * to contain the Tx command and MAC header concatenated together
631 * (payload data will be in another buffer).
632 * Size of this varies, due to varying MAC header length.
633 * If end is not dword aligned, we'll have 2 extra bytes at the end
634 * of the MAC header (device reads on dword boundaries).
635 * We'll tell device about this padding later.
637 len
= sizeof(struct iwl3945_tx_cmd
) +
638 sizeof(struct iwl_cmd_header
) + hdr_len
;
641 len
= (len
+ 3) & ~3;
648 /* Physical address of this Tx command's header (not MAC header!),
649 * within command buffer array. */
650 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
651 len
, PCI_DMA_TODEVICE
);
652 /* we do not map meta data ... so we can safely access address to
653 * provide to unmap command*/
654 pci_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
655 pci_unmap_len_set(out_meta
, len
, len
);
657 /* Add buffer containing Tx command and MAC(!) header to TFD's
659 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
660 txcmd_phys
, len
, 1, 0);
663 /* Set up TFD's 2nd entry to point directly to remainder of skb,
664 * if any (802.11 null frames have no payload). */
665 len
= skb
->len
- hdr_len
;
667 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
668 len
, PCI_DMA_TODEVICE
);
669 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
675 /* Tell device the write index *just past* this latest filled TFD */
676 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
677 rc
= iwl_txq_update_write_ptr(priv
, txq
);
678 spin_unlock_irqrestore(&priv
->lock
, flags
);
683 if ((iwl_queue_space(q
) < q
->high_mark
)
684 && priv
->mac80211_registered
) {
685 if (wait_write_ptr
) {
686 spin_lock_irqsave(&priv
->lock
, flags
);
687 txq
->need_update
= 1;
688 iwl_txq_update_write_ptr(priv
, txq
);
689 spin_unlock_irqrestore(&priv
->lock
, flags
);
692 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
698 spin_unlock_irqrestore(&priv
->lock
, flags
);
703 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
705 #include "iwl-spectrum.h"
707 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
708 #define BEACON_TIME_MASK_HIGH 0xFF000000
709 #define TIME_UNIT 1024
712 * extended beacon time format
713 * time in usec will be changed into a 32-bit value in 8:24 format
714 * the high 1 byte is the beacon counts
715 * the lower 3 bytes is the time in usec within one beacon interval
718 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
722 u32 interval
= beacon_interval
* 1024;
724 if (!interval
|| !usec
)
727 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
728 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
730 return (quot
<< 24) + rem
;
733 /* base is usually what we get from ucode with each received frame,
734 * the same as HW timer counter counting down
737 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
739 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
740 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
741 u32 interval
= beacon_interval
* TIME_UNIT
;
742 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
743 (addon
& BEACON_TIME_MASK_HIGH
);
745 if (base_low
> addon_low
)
746 res
+= base_low
- addon_low
;
747 else if (base_low
< addon_low
) {
748 res
+= interval
+ base_low
- addon_low
;
753 return cpu_to_le32(res
);
756 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
757 struct ieee80211_measurement_params
*params
,
760 struct iwl_spectrum_cmd spectrum
;
761 struct iwl_rx_packet
*res
;
762 struct iwl_host_cmd cmd
= {
763 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
764 .data
= (void *)&spectrum
,
765 .flags
= CMD_WANT_SKB
,
767 u32 add_time
= le64_to_cpu(params
->start_time
);
769 int spectrum_resp_status
;
770 int duration
= le16_to_cpu(params
->duration
);
772 if (iwl_is_associated(priv
))
774 iwl3945_usecs_to_beacons(
775 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
776 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
778 memset(&spectrum
, 0, sizeof(spectrum
));
780 spectrum
.channel_count
= cpu_to_le16(1);
782 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
783 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
784 cmd
.len
= sizeof(spectrum
);
785 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
787 if (iwl_is_associated(priv
))
788 spectrum
.start_time
=
789 iwl3945_add_beacon_time(priv
->last_beacon_time
,
791 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
793 spectrum
.start_time
= 0;
795 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
796 spectrum
.channels
[0].channel
= params
->channel
;
797 spectrum
.channels
[0].type
= type
;
798 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
799 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
800 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
802 rc
= iwl_send_cmd_sync(priv
, &cmd
);
806 res
= (struct iwl_rx_packet
*)cmd
.reply_skb
->data
;
807 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
808 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
812 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
813 switch (spectrum_resp_status
) {
814 case 0: /* Command will be handled */
815 if (res
->u
.spectrum
.id
!= 0xff) {
816 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
818 priv
->measurement_status
&= ~MEASUREMENT_READY
;
820 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
824 case 1: /* Command will not be handled */
829 dev_kfree_skb_any(cmd
.reply_skb
);
835 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
836 struct iwl_rx_mem_buffer
*rxb
)
838 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
839 struct iwl_alive_resp
*palive
;
840 struct delayed_work
*pwork
;
842 palive
= &pkt
->u
.alive_frame
;
844 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
846 palive
->is_valid
, palive
->ver_type
,
847 palive
->ver_subtype
);
849 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
850 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
851 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
852 sizeof(struct iwl_alive_resp
));
853 pwork
= &priv
->init_alive_start
;
855 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
856 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
857 sizeof(struct iwl_alive_resp
));
858 pwork
= &priv
->alive_start
;
859 iwl3945_disable_events(priv
);
862 /* We delay the ALIVE response by 5ms to
863 * give the HW RF Kill time to activate... */
864 if (palive
->is_valid
== UCODE_VALID_OK
)
865 queue_delayed_work(priv
->workqueue
, pwork
,
866 msecs_to_jiffies(5));
868 IWL_WARN(priv
, "uCode did not respond OK.\n");
871 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
872 struct iwl_rx_mem_buffer
*rxb
)
874 #ifdef CONFIG_IWLWIFI_DEBUG
875 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
878 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
882 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
884 struct iwl_priv
*priv
=
885 container_of(work
, struct iwl_priv
, beacon_update
);
886 struct sk_buff
*beacon
;
888 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
889 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
892 IWL_ERR(priv
, "update beacon failed\n");
896 mutex_lock(&priv
->mutex
);
897 /* new beacon skb is allocated every time; dispose previous.*/
898 if (priv
->ibss_beacon
)
899 dev_kfree_skb(priv
->ibss_beacon
);
901 priv
->ibss_beacon
= beacon
;
902 mutex_unlock(&priv
->mutex
);
904 iwl3945_send_beacon_cmd(priv
);
907 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
908 struct iwl_rx_mem_buffer
*rxb
)
910 #ifdef CONFIG_IWLWIFI_DEBUG
911 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
912 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
913 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
915 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
916 "tsf %d %d rate %d\n",
917 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
918 beacon
->beacon_notify_hdr
.failure_frame
,
919 le32_to_cpu(beacon
->ibss_mgr_status
),
920 le32_to_cpu(beacon
->high_tsf
),
921 le32_to_cpu(beacon
->low_tsf
), rate
);
924 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
925 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
926 queue_work(priv
->workqueue
, &priv
->beacon_update
);
929 /* Handle notification from uCode that card's power state is changing
930 * due to software, hardware, or critical temperature RFKILL */
931 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
932 struct iwl_rx_mem_buffer
*rxb
)
934 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
935 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
936 unsigned long status
= priv
->status
;
938 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
939 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
940 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
942 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
943 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
945 if (flags
& HW_CARD_DISABLED
)
946 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
948 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
951 iwl_scan_cancel(priv
);
953 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
954 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
955 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
956 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
958 wake_up_interruptible(&priv
->wait_command_queue
);
962 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
964 * Setup the RX handlers for each of the reply types sent from the uCode
967 * This function chains into the hardware specific files for them to setup
968 * any hardware specific handlers as well.
970 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
972 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
973 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
974 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
975 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
976 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
977 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
978 iwl_rx_pm_debug_statistics_notif
;
979 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
982 * The same handler is used for both the REPLY to a discrete
983 * statistics request from the host as well as for the periodic
984 * statistics notifications (after received beacons) from the uCode.
986 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
987 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
989 iwl_setup_spectrum_handlers(priv
);
990 iwl_setup_rx_scan_handlers(priv
);
991 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
993 /* Set up hardware specific Rx handlers */
994 iwl3945_hw_rx_handler_setup(priv
);
997 /************************** RX-FUNCTIONS ****************************/
999 * Rx theory of operation
1001 * The host allocates 32 DMA target addresses and passes the host address
1002 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1006 * The host/firmware share two index registers for managing the Rx buffers.
1008 * The READ index maps to the first position that the firmware may be writing
1009 * to -- the driver can read up to (but not including) this position and get
1011 * The READ index is managed by the firmware once the card is enabled.
1013 * The WRITE index maps to the last position the driver has read from -- the
1014 * position preceding WRITE is the last slot the firmware can place a packet.
1016 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1019 * During initialization, the host sets up the READ queue position to the first
1020 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1022 * When the firmware places a packet in a buffer, it will advance the READ index
1023 * and fire the RX interrupt. The driver can then query the READ index and
1024 * process as many packets as possible, moving the WRITE index forward as it
1025 * resets the Rx queue buffers with new memory.
1027 * The management in the driver is as follows:
1028 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1029 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1030 * to replenish the iwl->rxq->rx_free.
1031 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1032 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1033 * 'processed' and 'read' driver indexes as well)
1034 * + A received packet is processed and handed to the kernel network stack,
1035 * detached from the iwl->rxq. The driver 'processed' index is updated.
1036 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1037 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1038 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1039 * were enough free buffers and RX_STALLED is set it is cleared.
1044 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1045 * iwl3945_rx_queue_restock
1046 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1047 * queue, updates firmware pointers, and updates
1048 * the WRITE index. If insufficient rx_free buffers
1049 * are available, schedules iwl3945_rx_replenish
1051 * -- enable interrupts --
1052 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1053 * READ INDEX, detaching the SKB from the pool.
1054 * Moves the packet buffer from queue to rx_used.
1055 * Calls iwl3945_rx_queue_restock to refill any empty
1062 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1064 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1065 dma_addr_t dma_addr
)
1067 return cpu_to_le32((u32
)dma_addr
);
1071 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1073 * If there are slots in the RX queue that need to be restocked,
1074 * and we have free pre-allocated buffers, fill the ranks as much
1075 * as we can, pulling from rx_free.
1077 * This moves the 'write' index forward to catch up with 'processed', and
1078 * also updates the memory address in the firmware to reference the new
1081 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1083 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1084 struct list_head
*element
;
1085 struct iwl_rx_mem_buffer
*rxb
;
1086 unsigned long flags
;
1089 spin_lock_irqsave(&rxq
->lock
, flags
);
1090 write
= rxq
->write
& ~0x7;
1091 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1092 /* Get next free Rx buffer, remove from free list */
1093 element
= rxq
->rx_free
.next
;
1094 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1097 /* Point to Rx buffer via next RBD in circular buffer */
1098 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->real_dma_addr
);
1099 rxq
->queue
[rxq
->write
] = rxb
;
1100 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1103 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1104 /* If the pre-allocated buffer pool is dropping low, schedule to
1106 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1107 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1110 /* If we've added more space for the firmware to place data, tell it.
1111 * Increment device's write pointer in multiples of 8. */
1112 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1113 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1114 spin_lock_irqsave(&rxq
->lock
, flags
);
1115 rxq
->need_update
= 1;
1116 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1117 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1126 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1128 * When moving to rx_free an SKB is allocated for the slot.
1130 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1131 * This is called as a scheduled work item (except for during initialization)
1133 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1135 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1136 struct list_head
*element
;
1137 struct iwl_rx_mem_buffer
*rxb
;
1138 struct sk_buff
*skb
;
1139 unsigned long flags
;
1142 spin_lock_irqsave(&rxq
->lock
, flags
);
1144 if (list_empty(&rxq
->rx_used
)) {
1145 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1148 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1150 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1151 priority
|= __GFP_NOWARN
;
1152 /* Alloc a new receive buffer */
1153 skb
= alloc_skb(priv
->hw_params
.rx_buf_size
, priority
);
1155 if (net_ratelimit())
1156 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1157 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1159 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1160 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1162 /* We don't reschedule replenish work here -- we will
1163 * call the restock method and if it still needs
1164 * more buffers it will schedule replenish */
1168 spin_lock_irqsave(&rxq
->lock
, flags
);
1169 if (list_empty(&rxq
->rx_used
)) {
1170 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1171 dev_kfree_skb_any(skb
);
1174 element
= rxq
->rx_used
.next
;
1175 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1177 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1181 /* If radiotap head is required, reserve some headroom here.
1182 * The physical head count is a variable rx_stats->phy_count.
1183 * We reserve 4 bytes here. Plus these extra bytes, the
1184 * headroom of the physical head should be enough for the
1185 * radiotap head that iwl3945 supported. See iwl3945_rt.
1187 skb_reserve(rxb
->skb
, 4);
1189 /* Get physical address of RB/SKB */
1190 rxb
->real_dma_addr
= pci_map_single(priv
->pci_dev
,
1192 priv
->hw_params
.rx_buf_size
,
1193 PCI_DMA_FROMDEVICE
);
1195 spin_lock_irqsave(&rxq
->lock
, flags
);
1196 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1197 priv
->alloc_rxb_skb
++;
1199 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1203 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1205 unsigned long flags
;
1207 spin_lock_irqsave(&rxq
->lock
, flags
);
1208 INIT_LIST_HEAD(&rxq
->rx_free
);
1209 INIT_LIST_HEAD(&rxq
->rx_used
);
1210 /* Fill the rx_used queue with _all_ of the Rx buffers */
1211 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1212 /* In the reset function, these buffers may have been allocated
1213 * to an SKB, so we need to unmap and free potential storage */
1214 if (rxq
->pool
[i
].skb
!= NULL
) {
1215 pci_unmap_single(priv
->pci_dev
,
1216 rxq
->pool
[i
].real_dma_addr
,
1217 priv
->hw_params
.rx_buf_size
,
1218 PCI_DMA_FROMDEVICE
);
1219 priv
->alloc_rxb_skb
--;
1220 dev_kfree_skb(rxq
->pool
[i
].skb
);
1221 rxq
->pool
[i
].skb
= NULL
;
1223 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1226 /* Set us so that we have processed and used all buffers, but have
1227 * not restocked the Rx queue with fresh buffers */
1228 rxq
->read
= rxq
->write
= 0;
1229 rxq
->free_count
= 0;
1230 rxq
->write_actual
= 0;
1231 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1234 void iwl3945_rx_replenish(void *data
)
1236 struct iwl_priv
*priv
= data
;
1237 unsigned long flags
;
1239 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1241 spin_lock_irqsave(&priv
->lock
, flags
);
1242 iwl3945_rx_queue_restock(priv
);
1243 spin_unlock_irqrestore(&priv
->lock
, flags
);
1246 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1248 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1250 iwl3945_rx_queue_restock(priv
);
1254 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1255 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1256 * This free routine walks the list of POOL entries and if SKB is set to
1257 * non NULL it is unmapped and freed
1259 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1262 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1263 if (rxq
->pool
[i
].skb
!= NULL
) {
1264 pci_unmap_single(priv
->pci_dev
,
1265 rxq
->pool
[i
].real_dma_addr
,
1266 priv
->hw_params
.rx_buf_size
,
1267 PCI_DMA_FROMDEVICE
);
1268 dev_kfree_skb(rxq
->pool
[i
].skb
);
1272 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1274 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1275 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1277 rxq
->rb_stts
= NULL
;
1281 /* Convert linear signal-to-noise ratio into dB */
1282 static u8 ratio2dB
[100] = {
1283 /* 0 1 2 3 4 5 6 7 8 9 */
1284 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1285 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1286 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1287 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1288 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1289 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1290 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1291 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1292 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1293 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1296 /* Calculates a relative dB value from a ratio of linear
1297 * (i.e. not dB) signal levels.
1298 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1299 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1301 /* 1000:1 or higher just report as 60 dB */
1302 if (sig_ratio
>= 1000)
1305 /* 100:1 or higher, divide by 10 and use table,
1306 * add 20 dB to make up for divide by 10 */
1307 if (sig_ratio
>= 100)
1308 return 20 + (int)ratio2dB
[sig_ratio
/10];
1310 /* We shouldn't see this */
1314 /* Use table for ratios 1:1 - 99:1 */
1315 return (int)ratio2dB
[sig_ratio
];
1318 #define PERFECT_RSSI (-20) /* dBm */
1319 #define WORST_RSSI (-95) /* dBm */
1320 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1322 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1323 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1324 * about formulas used below. */
1325 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1328 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1330 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1331 * as indicator; formula is (signal dbm - noise dbm).
1332 * SNR at or above 40 is a great signal (100%).
1333 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1334 * Weakest usable signal is usually 10 - 15 dB SNR. */
1336 if (rssi_dbm
- noise_dbm
>= 40)
1338 else if (rssi_dbm
< noise_dbm
)
1340 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1342 /* Else use just the signal level.
1343 * This formula is a least squares fit of data points collected and
1344 * compared with a reference system that had a percentage (%) display
1345 * for signal quality. */
1347 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1348 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1349 (RSSI_RANGE
* RSSI_RANGE
);
1353 else if (sig_qual
< 1)
1360 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1362 * Uses the priv->rx_handlers callback function array to invoke
1363 * the appropriate handlers, including command responses,
1364 * frame-received notifications, and other notifications.
1366 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1368 struct iwl_rx_mem_buffer
*rxb
;
1369 struct iwl_rx_packet
*pkt
;
1370 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1373 unsigned long flags
;
1376 int total_empty
= 0;
1378 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1379 * buffer that the driver may process (last buffer filled by ucode). */
1380 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1383 /* calculate total frames need to be restock after handling RX */
1384 total_empty
= r
- priv
->rxq
.write_actual
;
1385 if (total_empty
< 0)
1386 total_empty
+= RX_QUEUE_SIZE
;
1388 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1390 /* Rx interrupt, but nothing sent from uCode */
1392 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1395 rxb
= rxq
->queue
[i
];
1397 /* If an RXB doesn't have a Rx queue slot associated with it,
1398 * then a bug has been introduced in the queue refilling
1399 * routines -- catch it here */
1400 BUG_ON(rxb
== NULL
);
1402 rxq
->queue
[i
] = NULL
;
1404 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1405 priv
->hw_params
.rx_buf_size
,
1406 PCI_DMA_FROMDEVICE
);
1407 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1409 /* Reclaim a command buffer only if this packet is a response
1410 * to a (driver-originated) command.
1411 * If the packet (e.g. Rx frame) originated from uCode,
1412 * there is no command buffer to reclaim.
1413 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1414 * but apparently a few don't get set; catch them here. */
1415 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1416 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1417 (pkt
->hdr
.cmd
!= REPLY_TX
);
1419 /* Based on type of command response or notification,
1420 * handle those that need handling via function in
1421 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1422 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1423 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1424 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1425 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1426 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1428 /* No handling needed */
1429 IWL_DEBUG_RX(priv
, "r %d i %d No handler needed for %s, 0x%02x\n",
1430 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1435 /* Invoke any callbacks, transfer the skb to caller, and
1436 * fire off the (possibly) blocking iwl_send_cmd()
1437 * as we reclaim the driver command queue */
1438 if (rxb
&& rxb
->skb
)
1439 iwl_tx_cmd_complete(priv
, rxb
);
1441 IWL_WARN(priv
, "Claim null rxb?\n");
1444 /* For now we just don't re-use anything. We can tweak this
1445 * later to try and re-use notification packets and SKBs that
1446 * fail to Rx correctly */
1447 if (rxb
->skb
!= NULL
) {
1448 priv
->alloc_rxb_skb
--;
1449 dev_kfree_skb_any(rxb
->skb
);
1453 spin_lock_irqsave(&rxq
->lock
, flags
);
1454 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1455 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1456 i
= (i
+ 1) & RX_QUEUE_MASK
;
1457 /* If there are a lot of unused frames,
1458 * restock the Rx queue so ucode won't assert. */
1463 iwl3945_rx_replenish_now(priv
);
1469 /* Backtrack one entry */
1472 iwl3945_rx_replenish_now(priv
);
1474 iwl3945_rx_queue_restock(priv
);
1477 /* call this function to flush any scheduled tasklet */
1478 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1480 /* wait to make sure we flush pending tasklet*/
1481 synchronize_irq(priv
->pci_dev
->irq
);
1482 tasklet_kill(&priv
->irq_tasklet
);
1485 #ifdef CONFIG_IWLWIFI_DEBUG
1486 static const char *desc_lookup(int i
)
1494 return "BAD_CHECKSUM";
1496 return "NMI_INTERRUPT";
1500 return "FATAL_ERROR";
1506 #define ERROR_START_OFFSET (1 * sizeof(u32))
1507 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1509 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1512 u32 desc
, time
, count
, base
, data1
;
1513 u32 blink1
, blink2
, ilink1
, ilink2
;
1515 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1517 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1518 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1523 count
= iwl_read_targ_mem(priv
, base
);
1525 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1526 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1527 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1528 priv
->status
, count
);
1531 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1532 "ilink1 nmiPC Line\n");
1533 for (i
= ERROR_START_OFFSET
;
1534 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1535 i
+= ERROR_ELEM_SIZE
) {
1536 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1538 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1540 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1542 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1544 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1546 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1548 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1551 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1552 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1553 ilink1
, ilink2
, data1
);
1558 #define EVENT_START_OFFSET (6 * sizeof(u32))
1561 * iwl3945_print_event_log - Dump error event log to syslog
1564 static void iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1565 u32 num_events
, u32 mode
)
1568 u32 base
; /* SRAM byte address of event log header */
1569 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1570 u32 ptr
; /* SRAM byte address of log data */
1571 u32 ev
, time
, data
; /* event log data */
1573 if (num_events
== 0)
1576 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1579 event_size
= 2 * sizeof(u32
);
1581 event_size
= 3 * sizeof(u32
);
1583 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1585 /* "time" is actually "data" for mode 0 (no timestamp).
1586 * place event id # at far right for easier visual parsing. */
1587 for (i
= 0; i
< num_events
; i
++) {
1588 ev
= iwl_read_targ_mem(priv
, ptr
);
1590 time
= iwl_read_targ_mem(priv
, ptr
);
1594 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1596 data
= iwl_read_targ_mem(priv
, ptr
);
1598 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n", time
, data
, ev
);
1603 void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1605 u32 base
; /* SRAM byte address of event log header */
1606 u32 capacity
; /* event log capacity in # entries */
1607 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1608 u32 num_wraps
; /* # times uCode wrapped to top of log */
1609 u32 next_entry
; /* index of next entry to be written by uCode */
1610 u32 size
; /* # entries that we'll print */
1612 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1613 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1614 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1618 /* event log header */
1619 capacity
= iwl_read_targ_mem(priv
, base
);
1620 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1621 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1622 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1624 size
= num_wraps
? capacity
: next_entry
;
1626 /* bail out if nothing in log */
1628 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1632 IWL_ERR(priv
, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1635 /* if uCode has wrapped back to top of log, start at the oldest entry,
1636 * i.e the next one that uCode would fill. */
1638 iwl3945_print_event_log(priv
, next_entry
,
1639 capacity
- next_entry
, mode
);
1641 /* (then/else) start at top of log */
1642 iwl3945_print_event_log(priv
, 0, next_entry
, mode
);
1646 void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1650 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1656 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1658 u32 inta
, handled
= 0;
1660 unsigned long flags
;
1661 #ifdef CONFIG_IWLWIFI_DEBUG
1665 spin_lock_irqsave(&priv
->lock
, flags
);
1667 /* Ack/clear/reset pending uCode interrupts.
1668 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1669 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1670 inta
= iwl_read32(priv
, CSR_INT
);
1671 iwl_write32(priv
, CSR_INT
, inta
);
1673 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1674 * Any new interrupts that happen after this, either while we're
1675 * in this tasklet, or later, will show up in next ISR/tasklet. */
1676 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1677 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1679 #ifdef CONFIG_IWLWIFI_DEBUG
1680 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1681 /* just for debug */
1682 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1683 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1684 inta
, inta_mask
, inta_fh
);
1688 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1689 * atomic, make sure that inta covers all the interrupts that
1690 * we've discovered, even if FH interrupt came in just after
1691 * reading CSR_INT. */
1692 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1693 inta
|= CSR_INT_BIT_FH_RX
;
1694 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1695 inta
|= CSR_INT_BIT_FH_TX
;
1697 /* Now service all interrupt bits discovered above. */
1698 if (inta
& CSR_INT_BIT_HW_ERR
) {
1699 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1701 /* Tell the device to stop sending interrupts */
1702 iwl_disable_interrupts(priv
);
1704 priv
->isr_stats
.hw
++;
1705 iwl_irq_handle_error(priv
);
1707 handled
|= CSR_INT_BIT_HW_ERR
;
1709 spin_unlock_irqrestore(&priv
->lock
, flags
);
1714 #ifdef CONFIG_IWLWIFI_DEBUG
1715 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1716 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1717 if (inta
& CSR_INT_BIT_SCD
) {
1718 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1719 "the frame/frames.\n");
1720 priv
->isr_stats
.sch
++;
1723 /* Alive notification via Rx interrupt will do the real work */
1724 if (inta
& CSR_INT_BIT_ALIVE
) {
1725 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1726 priv
->isr_stats
.alive
++;
1730 /* Safely ignore these bits for debug checks below */
1731 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1733 /* Error detected by uCode */
1734 if (inta
& CSR_INT_BIT_SW_ERR
) {
1735 IWL_ERR(priv
, "Microcode SW error detected. "
1736 "Restarting 0x%X.\n", inta
);
1737 priv
->isr_stats
.sw
++;
1738 priv
->isr_stats
.sw_err
= inta
;
1739 iwl_irq_handle_error(priv
);
1740 handled
|= CSR_INT_BIT_SW_ERR
;
1743 /* uCode wakes up after power-down sleep */
1744 if (inta
& CSR_INT_BIT_WAKEUP
) {
1745 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1746 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1747 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1748 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1749 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1750 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1751 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1752 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1754 priv
->isr_stats
.wakeup
++;
1755 handled
|= CSR_INT_BIT_WAKEUP
;
1758 /* All uCode command responses, including Tx command responses,
1759 * Rx "responses" (frame-received notification), and other
1760 * notifications from uCode come through here*/
1761 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1762 iwl3945_rx_handle(priv
);
1763 priv
->isr_stats
.rx
++;
1764 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1767 if (inta
& CSR_INT_BIT_FH_TX
) {
1768 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1769 priv
->isr_stats
.tx
++;
1771 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1772 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1773 (FH39_SRVC_CHNL
), 0x0);
1774 handled
|= CSR_INT_BIT_FH_TX
;
1777 if (inta
& ~handled
) {
1778 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1779 priv
->isr_stats
.unhandled
++;
1782 if (inta
& ~priv
->inta_mask
) {
1783 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1784 inta
& ~priv
->inta_mask
);
1785 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1788 /* Re-enable all interrupts */
1789 /* only Re-enable if disabled by irq */
1790 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1791 iwl_enable_interrupts(priv
);
1793 #ifdef CONFIG_IWLWIFI_DEBUG
1794 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1795 inta
= iwl_read32(priv
, CSR_INT
);
1796 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1797 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1798 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1799 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1802 spin_unlock_irqrestore(&priv
->lock
, flags
);
1805 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1806 enum ieee80211_band band
,
1807 u8 is_active
, u8 n_probes
,
1808 struct iwl3945_scan_channel
*scan_ch
)
1810 struct ieee80211_channel
*chan
;
1811 const struct ieee80211_supported_band
*sband
;
1812 const struct iwl_channel_info
*ch_info
;
1813 u16 passive_dwell
= 0;
1814 u16 active_dwell
= 0;
1817 sband
= iwl_get_hw_mode(priv
, band
);
1821 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1822 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1824 if (passive_dwell
<= active_dwell
)
1825 passive_dwell
= active_dwell
+ 1;
1827 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1828 chan
= priv
->scan_request
->channels
[i
];
1830 if (chan
->band
!= band
)
1833 scan_ch
->channel
= chan
->hw_value
;
1835 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1836 if (!is_channel_valid(ch_info
)) {
1837 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1842 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1843 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1844 /* If passive , set up for auto-switch
1845 * and use long active_dwell time.
1847 if (!is_active
|| is_channel_passive(ch_info
) ||
1848 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1849 scan_ch
->type
= 0; /* passive */
1850 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1851 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1853 scan_ch
->type
= 1; /* active */
1856 /* Set direct probe bits. These may be used both for active
1857 * scan channels (probes gets sent right away),
1858 * or for passive channels (probes get se sent only after
1859 * hearing clear Rx packet).*/
1860 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1862 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1864 /* uCode v1 does not allow setting direct probe bits on
1865 * passive channel. */
1866 if ((scan_ch
->type
& 1) && n_probes
)
1867 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1870 /* Set txpower levels to defaults */
1871 scan_ch
->tpc
.dsp_atten
= 110;
1872 /* scan_pwr_info->tpc.dsp_atten; */
1874 /*scan_pwr_info->tpc.tx_gain; */
1875 if (band
== IEEE80211_BAND_5GHZ
)
1876 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1878 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1879 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1881 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1885 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1887 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1888 (scan_ch
->type
& 1) ?
1889 active_dwell
: passive_dwell
);
1895 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
1899 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1900 struct ieee80211_rate
*rates
)
1904 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
1905 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1906 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1907 rates
[i
].hw_value_short
= i
;
1909 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1911 * If CCK != 1M then set short preamble rate flag.
1913 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1914 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1919 /******************************************************************************
1921 * uCode download functions
1923 ******************************************************************************/
1925 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1927 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1928 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1929 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1930 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1931 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1932 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1936 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1937 * looking at all data.
1939 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1946 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1948 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1949 IWL39_RTC_INST_LOWER_BOUND
);
1952 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1953 /* read data comes through single port, auto-incr addr */
1954 /* NOTE: Use the debugless read so we don't flood kernel log
1955 * if IWL_DL_IO is set */
1956 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1957 if (val
!= le32_to_cpu(*image
)) {
1958 IWL_ERR(priv
, "uCode INST section is invalid at "
1959 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1960 save_len
- len
, val
, le32_to_cpu(*image
));
1970 IWL_DEBUG_INFO(priv
,
1971 "ucode image in INSTRUCTION memory is good\n");
1978 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1979 * using sample data 100 bytes apart. If these sample points are good,
1980 * it's a pretty good bet that everything between them is good, too.
1982 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1989 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1991 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
1992 /* read data comes through single port, auto-incr addr */
1993 /* NOTE: Use the debugless read so we don't flood kernel log
1994 * if IWL_DL_IO is set */
1995 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1996 i
+ IWL39_RTC_INST_LOWER_BOUND
);
1997 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1998 if (val
!= le32_to_cpu(*image
)) {
1999 #if 0 /* Enable this if you want to see details */
2000 IWL_ERR(priv
, "uCode INST section is invalid at "
2001 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2016 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2017 * and verify its contents
2019 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2026 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2027 len
= priv
->ucode_boot
.len
;
2028 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2030 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2034 /* Try initialize */
2035 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2036 len
= priv
->ucode_init
.len
;
2037 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2039 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2043 /* Try runtime/protocol */
2044 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2045 len
= priv
->ucode_code
.len
;
2046 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2048 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2052 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2054 /* Since nothing seems to match, show first several data entries in
2055 * instruction SRAM, so maybe visual inspection will give a clue.
2056 * Selection of bootstrap image (vs. other images) is arbitrary. */
2057 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2058 len
= priv
->ucode_boot
.len
;
2059 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2064 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2066 /* Remove all resets to allow NIC to operate */
2067 iwl_write32(priv
, CSR_RESET
, 0);
2071 * iwl3945_read_ucode - Read uCode images from disk file.
2073 * Copy into buffers for card to fetch via bus-mastering
2075 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2077 const struct iwl_ucode_header
*ucode
;
2078 int ret
= -EINVAL
, index
;
2079 const struct firmware
*ucode_raw
;
2080 /* firmware file name contains uCode/driver compatibility version */
2081 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2082 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2083 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2087 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2089 /* Ask kernel firmware_class module to get the boot firmware off disk.
2090 * request_firmware() is synchronous, file is in memory on return. */
2091 for (index
= api_max
; index
>= api_min
; index
--) {
2092 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2093 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2095 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2102 if (index
< api_max
)
2103 IWL_ERR(priv
, "Loaded firmware %s, "
2104 "which is deprecated. "
2105 " Please use API v%u instead.\n",
2107 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2108 "(%zd bytes) from disk\n",
2109 buf
, ucode_raw
->size
);
2117 /* Make sure that we got at least our header! */
2118 if (ucode_raw
->size
< priv
->cfg
->ops
->ucode
->get_header_size(1)) {
2119 IWL_ERR(priv
, "File size way too small!\n");
2124 /* Data from ucode file: header followed by uCode images */
2125 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2127 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2128 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2129 inst_size
= priv
->cfg
->ops
->ucode
->get_inst_size(ucode
, api_ver
);
2130 data_size
= priv
->cfg
->ops
->ucode
->get_data_size(ucode
, api_ver
);
2131 init_size
= priv
->cfg
->ops
->ucode
->get_init_size(ucode
, api_ver
);
2133 priv
->cfg
->ops
->ucode
->get_init_data_size(ucode
, api_ver
);
2134 boot_size
= priv
->cfg
->ops
->ucode
->get_boot_size(ucode
, api_ver
);
2135 src
= priv
->cfg
->ops
->ucode
->get_data(ucode
, api_ver
);
2137 /* api_ver should match the api version forming part of the
2138 * firmware filename ... but we don't check for that and only rely
2139 * on the API version read from firmware header from here on forward */
2141 if (api_ver
< api_min
|| api_ver
> api_max
) {
2142 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2143 "Driver supports v%u, firmware is v%u.\n",
2145 priv
->ucode_ver
= 0;
2149 if (api_ver
!= api_max
)
2150 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2151 "got %u. New firmware can be obtained "
2152 "from http://www.intellinuxwireless.org.\n",
2155 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2156 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2157 IWL_UCODE_MINOR(priv
->ucode_ver
),
2158 IWL_UCODE_API(priv
->ucode_ver
),
2159 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2161 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2163 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2165 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2167 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2169 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2171 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2175 /* Verify size of file vs. image size info in file's header */
2176 if (ucode_raw
->size
!= priv
->cfg
->ops
->ucode
->get_header_size(api_ver
) +
2177 inst_size
+ data_size
+ init_size
+
2178 init_data_size
+ boot_size
) {
2180 IWL_DEBUG_INFO(priv
,
2181 "uCode file size %zd does not match expected size\n",
2187 /* Verify that uCode images will fit in card's SRAM */
2188 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2189 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2195 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2196 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2201 if (init_size
> IWL39_MAX_INST_SIZE
) {
2202 IWL_DEBUG_INFO(priv
,
2203 "uCode init instr len %d too large to fit in\n",
2208 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2209 IWL_DEBUG_INFO(priv
,
2210 "uCode init data len %d too large to fit in\n",
2215 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2216 IWL_DEBUG_INFO(priv
,
2217 "uCode boot instr len %d too large to fit in\n",
2223 /* Allocate ucode buffers for card's bus-master loading ... */
2225 /* Runtime instructions and 2 copies of data:
2226 * 1) unmodified from disk
2227 * 2) backup cache for save/restore during power-downs */
2228 priv
->ucode_code
.len
= inst_size
;
2229 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2231 priv
->ucode_data
.len
= data_size
;
2232 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2234 priv
->ucode_data_backup
.len
= data_size
;
2235 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2237 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2238 !priv
->ucode_data_backup
.v_addr
)
2241 /* Initialization instructions and data */
2242 if (init_size
&& init_data_size
) {
2243 priv
->ucode_init
.len
= init_size
;
2244 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2246 priv
->ucode_init_data
.len
= init_data_size
;
2247 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2249 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2253 /* Bootstrap (instructions only, no data) */
2255 priv
->ucode_boot
.len
= boot_size
;
2256 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2258 if (!priv
->ucode_boot
.v_addr
)
2262 /* Copy images into buffers for card's bus-master reads ... */
2264 /* Runtime instructions (first block of data in file) */
2266 IWL_DEBUG_INFO(priv
,
2267 "Copying (but not loading) uCode instr len %zd\n", len
);
2268 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2271 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2272 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2274 /* Runtime data (2nd block)
2275 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2277 IWL_DEBUG_INFO(priv
,
2278 "Copying (but not loading) uCode data len %zd\n", len
);
2279 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2280 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2283 /* Initialization instructions (3rd block) */
2286 IWL_DEBUG_INFO(priv
,
2287 "Copying (but not loading) init instr len %zd\n", len
);
2288 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2292 /* Initialization data (4th block) */
2293 if (init_data_size
) {
2294 len
= init_data_size
;
2295 IWL_DEBUG_INFO(priv
,
2296 "Copying (but not loading) init data len %zd\n", len
);
2297 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2301 /* Bootstrap instructions (5th block) */
2303 IWL_DEBUG_INFO(priv
,
2304 "Copying (but not loading) boot instr len %zd\n", len
);
2305 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2307 /* We have our copies now, allow OS release its copies */
2308 release_firmware(ucode_raw
);
2312 IWL_ERR(priv
, "failed to allocate pci memory\n");
2314 iwl3945_dealloc_ucode_pci(priv
);
2317 release_firmware(ucode_raw
);
2325 * iwl3945_set_ucode_ptrs - Set uCode address location
2327 * Tell initialization uCode where to find runtime uCode.
2329 * BSM registers initially contain pointers to initialization uCode.
2330 * We need to replace them to load runtime uCode inst and data,
2331 * and to save runtime data when powering down.
2333 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2338 /* bits 31:0 for 3945 */
2339 pinst
= priv
->ucode_code
.p_addr
;
2340 pdata
= priv
->ucode_data_backup
.p_addr
;
2342 /* Tell bootstrap uCode where to find image to load */
2343 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2344 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2345 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2346 priv
->ucode_data
.len
);
2348 /* Inst byte count must be last to set up, bit 31 signals uCode
2349 * that all new ptr/size info is in place */
2350 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2351 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2353 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2359 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2361 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2363 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2365 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2367 /* Check alive response for "valid" sign from uCode */
2368 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2369 /* We had an error bringing up the hardware, so take it
2370 * all the way back down so we can try again */
2371 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2375 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2376 * This is a paranoid check, because we would not have gotten the
2377 * "initialize" alive if code weren't properly loaded. */
2378 if (iwl3945_verify_ucode(priv
)) {
2379 /* Runtime instruction load was bad;
2380 * take it all the way back down so we can try again */
2381 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2385 /* Send pointers to protocol/runtime uCode image ... init code will
2386 * load and launch runtime uCode, which will send us another "Alive"
2388 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2389 if (iwl3945_set_ucode_ptrs(priv
)) {
2390 /* Runtime instruction load won't happen;
2391 * take it all the way back down so we can try again */
2392 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2398 queue_work(priv
->workqueue
, &priv
->restart
);
2402 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2403 * from protocol/runtime uCode (initialization uCode's
2404 * Alive gets handled by iwl3945_init_alive_start()).
2406 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2408 int thermal_spin
= 0;
2411 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2413 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2414 /* We had an error bringing up the hardware, so take it
2415 * all the way back down so we can try again */
2416 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2420 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2421 * This is a paranoid check, because we would not have gotten the
2422 * "runtime" alive if code weren't properly loaded. */
2423 if (iwl3945_verify_ucode(priv
)) {
2424 /* Runtime instruction load was bad;
2425 * take it all the way back down so we can try again */
2426 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2430 iwl_clear_stations_table(priv
);
2432 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2433 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2436 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2437 /* if RFKILL is not on, then wait for thermal
2438 * sensor in adapter to kick in */
2439 while (iwl3945_hw_get_temperature(priv
) == 0) {
2445 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2448 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2450 /* After the ALIVE response, we can send commands to 3945 uCode */
2451 set_bit(STATUS_ALIVE
, &priv
->status
);
2453 if (iwl_is_rfkill(priv
))
2456 ieee80211_wake_queues(priv
->hw
);
2458 priv
->active_rate
= priv
->rates_mask
;
2459 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2461 iwl_power_update_mode(priv
, false);
2463 if (iwl_is_associated(priv
)) {
2464 struct iwl3945_rxon_cmd
*active_rxon
=
2465 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2467 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2468 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2470 /* Initialize our rx_config data */
2471 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2474 /* Configure Bluetooth device coexistence support */
2475 iwl_send_bt_config(priv
);
2477 /* Configure the adapter for unassociated operation */
2478 iwlcore_commit_rxon(priv
);
2480 iwl3945_reg_txpower_periodic(priv
);
2482 iwl3945_led_register(priv
);
2484 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2485 set_bit(STATUS_READY
, &priv
->status
);
2486 wake_up_interruptible(&priv
->wait_command_queue
);
2488 /* reassociate for ADHOC mode */
2489 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2490 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2493 iwl_mac_beacon_update(priv
->hw
, beacon
);
2496 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2497 iwl_set_mode(priv
, priv
->iw_mode
);
2502 queue_work(priv
->workqueue
, &priv
->restart
);
2505 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2507 static void __iwl3945_down(struct iwl_priv
*priv
)
2509 unsigned long flags
;
2510 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2511 struct ieee80211_conf
*conf
= NULL
;
2513 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2515 conf
= ieee80211_get_hw_conf(priv
->hw
);
2518 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2520 iwl3945_led_unregister(priv
);
2521 iwl_clear_stations_table(priv
);
2523 /* Unblock any waiting calls */
2524 wake_up_interruptible_all(&priv
->wait_command_queue
);
2526 /* Wipe out the EXIT_PENDING status bit if we are not actually
2527 * exiting the module */
2529 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2531 /* stop and reset the on-board processor */
2532 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2534 /* tell the device to stop sending interrupts */
2535 spin_lock_irqsave(&priv
->lock
, flags
);
2536 iwl_disable_interrupts(priv
);
2537 spin_unlock_irqrestore(&priv
->lock
, flags
);
2538 iwl_synchronize_irq(priv
);
2540 if (priv
->mac80211_registered
)
2541 ieee80211_stop_queues(priv
->hw
);
2543 /* If we have not previously called iwl3945_init() then
2544 * clear all bits but the RF Kill bits and return */
2545 if (!iwl_is_init(priv
)) {
2546 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2548 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2549 STATUS_GEO_CONFIGURED
|
2550 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2551 STATUS_EXIT_PENDING
;
2555 /* ...otherwise clear out all the status bits but the RF Kill
2556 * bit and continue taking the NIC down. */
2557 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2559 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2560 STATUS_GEO_CONFIGURED
|
2561 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2563 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2564 STATUS_EXIT_PENDING
;
2566 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2567 spin_lock_irqsave(&priv
->lock
, flags
);
2568 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2569 spin_unlock_irqrestore(&priv
->lock
, flags
);
2571 iwl3945_hw_txq_ctx_stop(priv
);
2572 iwl3945_hw_rxq_stop(priv
);
2574 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
2575 APMG_CLK_VAL_DMA_CLK_RQT
);
2580 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2582 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
2585 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2587 if (priv
->ibss_beacon
)
2588 dev_kfree_skb(priv
->ibss_beacon
);
2589 priv
->ibss_beacon
= NULL
;
2591 /* clear out any free frames */
2592 iwl3945_clear_free_frames(priv
);
2595 static void iwl3945_down(struct iwl_priv
*priv
)
2597 mutex_lock(&priv
->mutex
);
2598 __iwl3945_down(priv
);
2599 mutex_unlock(&priv
->mutex
);
2601 iwl3945_cancel_deferred_work(priv
);
2604 #define MAX_HW_RESTARTS 5
2606 static int __iwl3945_up(struct iwl_priv
*priv
)
2610 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2611 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2615 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2616 IWL_ERR(priv
, "ucode not available for device bring up\n");
2620 /* If platform's RF_KILL switch is NOT set to KILL */
2621 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2622 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2623 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2625 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2626 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2630 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2632 rc
= iwl3945_hw_nic_init(priv
);
2634 IWL_ERR(priv
, "Unable to int nic\n");
2638 /* make sure rfkill handshake bits are cleared */
2639 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2640 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2641 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2643 /* clear (again), then enable host interrupts */
2644 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2645 iwl_enable_interrupts(priv
);
2647 /* really make sure rfkill handshake bits are cleared */
2648 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2649 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2651 /* Copy original ucode data image from disk into backup cache.
2652 * This will be used to initialize the on-board processor's
2653 * data SRAM for a clean start when the runtime program first loads. */
2654 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2655 priv
->ucode_data
.len
);
2657 /* We return success when we resume from suspend and rf_kill is on. */
2658 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2661 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2663 iwl_clear_stations_table(priv
);
2665 /* load bootstrap state machine,
2666 * load bootstrap program into processor's memory,
2667 * prepare to load the "initialize" uCode */
2668 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2672 "Unable to set up bootstrap uCode: %d\n", rc
);
2676 /* start card; "initialize" will load runtime ucode */
2677 iwl3945_nic_start(priv
);
2679 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2684 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2685 __iwl3945_down(priv
);
2686 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2688 /* tried to restart and config the device for as long as our
2689 * patience could withstand */
2690 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2695 /*****************************************************************************
2697 * Workqueue callbacks
2699 *****************************************************************************/
2701 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2703 struct iwl_priv
*priv
=
2704 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2706 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2709 mutex_lock(&priv
->mutex
);
2710 iwl3945_init_alive_start(priv
);
2711 mutex_unlock(&priv
->mutex
);
2714 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2716 struct iwl_priv
*priv
=
2717 container_of(data
, struct iwl_priv
, alive_start
.work
);
2719 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2722 mutex_lock(&priv
->mutex
);
2723 iwl3945_alive_start(priv
);
2724 mutex_unlock(&priv
->mutex
);
2727 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2729 struct iwl_priv
*priv
=
2730 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2732 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2733 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2735 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2737 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
2738 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
2740 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2741 round_jiffies_relative(2 * HZ
));
2745 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2746 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2748 struct iwl_priv
*priv
=
2749 container_of(data
, struct iwl_priv
, request_scan
);
2750 struct iwl_host_cmd cmd
= {
2751 .id
= REPLY_SCAN_CMD
,
2752 .len
= sizeof(struct iwl3945_scan_cmd
),
2753 .flags
= CMD_SIZE_HUGE
,
2756 struct iwl3945_scan_cmd
*scan
;
2757 struct ieee80211_conf
*conf
= NULL
;
2759 enum ieee80211_band band
;
2760 bool is_active
= false;
2762 conf
= ieee80211_get_hw_conf(priv
->hw
);
2764 mutex_lock(&priv
->mutex
);
2766 cancel_delayed_work(&priv
->scan_check
);
2768 if (!iwl_is_ready(priv
)) {
2769 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2773 /* Make sure the scan wasn't canceled before this queued work
2774 * was given the chance to run... */
2775 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2778 /* This should never be called or scheduled if there is currently
2779 * a scan active in the hardware. */
2780 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2781 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2782 "Ignoring second request.\n");
2787 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2788 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2792 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2794 "Scan request while abort pending. Queuing.\n");
2798 if (iwl_is_rfkill(priv
)) {
2799 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2803 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2805 "Scan request while uninitialized. Queuing.\n");
2809 if (!priv
->scan_bands
) {
2810 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2815 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2816 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2823 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2825 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2826 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2828 if (iwl_is_associated(priv
)) {
2831 u32 suspend_time
= 100;
2832 u32 scan_suspend_time
= 100;
2833 unsigned long flags
;
2835 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2837 spin_lock_irqsave(&priv
->lock
, flags
);
2838 interval
= priv
->beacon_int
;
2839 spin_unlock_irqrestore(&priv
->lock
, flags
);
2841 scan
->suspend_time
= 0;
2842 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2844 interval
= suspend_time
;
2846 * suspend time format:
2847 * 0-19: beacon interval in usec (time before exec.)
2849 * 24-31: number of beacons (suspend between channels)
2852 extra
= (suspend_time
/ interval
) << 24;
2853 scan_suspend_time
= 0xFF0FFFFF &
2854 (extra
| ((suspend_time
% interval
) * 1024));
2856 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2857 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2858 scan_suspend_time
, interval
);
2861 if (priv
->scan_request
->n_ssids
) {
2863 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2864 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2865 /* always does wildcard anyway */
2866 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2868 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2869 scan
->direct_scan
[p
].len
=
2870 priv
->scan_request
->ssids
[i
].ssid_len
;
2871 memcpy(scan
->direct_scan
[p
].ssid
,
2872 priv
->scan_request
->ssids
[i
].ssid
,
2873 priv
->scan_request
->ssids
[i
].ssid_len
);
2879 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2881 /* We don't build a direct scan probe request; the uCode will do
2882 * that based on the direct_mask added to each channel entry */
2883 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2884 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2885 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2887 /* flags + rate selection */
2889 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
2890 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2891 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2892 scan
->good_CRC_th
= 0;
2893 band
= IEEE80211_BAND_2GHZ
;
2894 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
2895 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2897 * If active scaning is requested but a certain channel
2898 * is marked passive, we can do active scanning if we
2899 * detect transmissions.
2901 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
2902 band
= IEEE80211_BAND_5GHZ
;
2904 IWL_WARN(priv
, "Invalid scan band count\n");
2908 scan
->tx_cmd
.len
= cpu_to_le16(
2909 iwl_fill_probe_req(priv
,
2910 (struct ieee80211_mgmt
*)scan
->data
,
2911 priv
->scan_request
->ie
,
2912 priv
->scan_request
->ie_len
,
2913 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2915 /* select Rx antennas */
2916 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2918 if (iwl_is_monitor_mode(priv
))
2919 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
2921 scan
->channel_count
=
2922 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2923 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
2925 if (scan
->channel_count
== 0) {
2926 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
2930 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
2931 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
2933 scan
->len
= cpu_to_le16(cmd
.len
);
2935 set_bit(STATUS_SCAN_HW
, &priv
->status
);
2936 rc
= iwl_send_cmd_sync(priv
, &cmd
);
2940 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
2941 IWL_SCAN_CHECK_WATCHDOG
);
2943 mutex_unlock(&priv
->mutex
);
2947 /* can not perform scan make sure we clear scanning
2948 * bits from status so next scan request can be performed.
2949 * if we dont clear scanning status bit here all next scan
2952 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
2953 clear_bit(STATUS_SCANNING
, &priv
->status
);
2955 /* inform mac80211 scan aborted */
2956 queue_work(priv
->workqueue
, &priv
->scan_completed
);
2957 mutex_unlock(&priv
->mutex
);
2960 static void iwl3945_bg_up(struct work_struct
*data
)
2962 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
2964 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2967 mutex_lock(&priv
->mutex
);
2969 mutex_unlock(&priv
->mutex
);
2972 static void iwl3945_bg_restart(struct work_struct
*data
)
2974 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
2976 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2979 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
2980 mutex_lock(&priv
->mutex
);
2983 mutex_unlock(&priv
->mutex
);
2985 ieee80211_restart_hw(priv
->hw
);
2988 queue_work(priv
->workqueue
, &priv
->up
);
2992 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
2994 struct iwl_priv
*priv
=
2995 container_of(data
, struct iwl_priv
, rx_replenish
);
2997 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3000 mutex_lock(&priv
->mutex
);
3001 iwl3945_rx_replenish(priv
);
3002 mutex_unlock(&priv
->mutex
);
3005 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3007 void iwl3945_post_associate(struct iwl_priv
*priv
)
3010 struct ieee80211_conf
*conf
= NULL
;
3012 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3013 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3018 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3019 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3021 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3024 if (!priv
->vif
|| !priv
->is_open
)
3027 iwl_scan_cancel_timeout(priv
, 200);
3029 conf
= ieee80211_get_hw_conf(priv
->hw
);
3031 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3032 iwlcore_commit_rxon(priv
);
3034 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3035 iwl_setup_rxon_timing(priv
);
3036 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3037 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3039 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3040 "Attempting to continue.\n");
3042 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3044 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3046 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3047 priv
->assoc_id
, priv
->beacon_int
);
3049 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3050 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3052 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3054 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3055 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3056 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3058 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3060 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3061 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3065 iwlcore_commit_rxon(priv
);
3067 switch (priv
->iw_mode
) {
3068 case NL80211_IFTYPE_STATION
:
3069 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3072 case NL80211_IFTYPE_ADHOC
:
3075 iwl_add_station(priv
, priv
->bssid
, 0, CMD_SYNC
, NULL
);
3076 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3077 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3078 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3080 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3081 iwl3945_send_beacon_cmd(priv
);
3086 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3087 __func__
, priv
->iw_mode
);
3091 iwl_activate_qos(priv
, 0);
3093 /* we have just associated, don't start scan too early */
3094 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3097 /*****************************************************************************
3099 * mac80211 entry point functions
3101 *****************************************************************************/
3103 #define UCODE_READY_TIMEOUT (2 * HZ)
3105 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3107 struct iwl_priv
*priv
= hw
->priv
;
3110 IWL_DEBUG_MAC80211(priv
, "enter\n");
3112 /* we should be verifying the device is ready to be opened */
3113 mutex_lock(&priv
->mutex
);
3115 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3116 * ucode filename and max sizes are card-specific. */
3118 if (!priv
->ucode_code
.len
) {
3119 ret
= iwl3945_read_ucode(priv
);
3121 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3122 mutex_unlock(&priv
->mutex
);
3123 goto out_release_irq
;
3127 ret
= __iwl3945_up(priv
);
3129 mutex_unlock(&priv
->mutex
);
3132 goto out_release_irq
;
3134 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3136 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3137 * mac80211 will not be run successfully. */
3138 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3139 test_bit(STATUS_READY
, &priv
->status
),
3140 UCODE_READY_TIMEOUT
);
3142 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3144 "Wait for START_ALIVE timeout after %dms.\n",
3145 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3147 goto out_release_irq
;
3151 /* ucode is running and will send rfkill notifications,
3152 * no need to poll the killswitch state anymore */
3153 cancel_delayed_work(&priv
->rfkill_poll
);
3156 IWL_DEBUG_MAC80211(priv
, "leave\n");
3161 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3165 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3167 struct iwl_priv
*priv
= hw
->priv
;
3169 IWL_DEBUG_MAC80211(priv
, "enter\n");
3171 if (!priv
->is_open
) {
3172 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3178 if (iwl_is_ready_rf(priv
)) {
3179 /* stop mac, cancel any scan request and clear
3180 * RXON_FILTER_ASSOC_MSK BIT
3182 mutex_lock(&priv
->mutex
);
3183 iwl_scan_cancel_timeout(priv
, 100);
3184 mutex_unlock(&priv
->mutex
);
3189 flush_workqueue(priv
->workqueue
);
3191 /* start polling the killswitch state again */
3192 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3193 round_jiffies_relative(2 * HZ
));
3195 IWL_DEBUG_MAC80211(priv
, "leave\n");
3198 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3200 struct iwl_priv
*priv
= hw
->priv
;
3202 IWL_DEBUG_MAC80211(priv
, "enter\n");
3204 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3205 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3207 if (iwl3945_tx_skb(priv
, skb
))
3208 dev_kfree_skb_any(skb
);
3210 IWL_DEBUG_MAC80211(priv
, "leave\n");
3211 return NETDEV_TX_OK
;
3214 void iwl3945_config_ap(struct iwl_priv
*priv
)
3218 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3221 /* The following should be done only at AP bring up */
3222 if (!(iwl_is_associated(priv
))) {
3224 /* RXON - unassoc (to set timing command) */
3225 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3226 iwlcore_commit_rxon(priv
);
3229 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3230 iwl_setup_rxon_timing(priv
);
3231 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3232 sizeof(priv
->rxon_timing
),
3233 &priv
->rxon_timing
);
3235 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3236 "Attempting to continue.\n");
3238 /* FIXME: what should be the assoc_id for AP? */
3239 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3240 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3241 priv
->staging_rxon
.flags
|=
3242 RXON_FLG_SHORT_PREAMBLE_MSK
;
3244 priv
->staging_rxon
.flags
&=
3245 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3247 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3248 if (priv
->assoc_capability
&
3249 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3250 priv
->staging_rxon
.flags
|=
3251 RXON_FLG_SHORT_SLOT_MSK
;
3253 priv
->staging_rxon
.flags
&=
3254 ~RXON_FLG_SHORT_SLOT_MSK
;
3256 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3257 priv
->staging_rxon
.flags
&=
3258 ~RXON_FLG_SHORT_SLOT_MSK
;
3260 /* restore RXON assoc */
3261 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3262 iwlcore_commit_rxon(priv
);
3263 iwl_add_station(priv
, iwl_bcast_addr
, 0, CMD_SYNC
, NULL
);
3265 iwl3945_send_beacon_cmd(priv
);
3267 /* FIXME - we need to add code here to detect a totally new
3268 * configuration, reset the AP, unassoc, rxon timing, assoc,
3269 * clear sta table, add BCAST sta... */
3272 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3273 struct ieee80211_vif
*vif
,
3274 struct ieee80211_sta
*sta
,
3275 struct ieee80211_key_conf
*key
)
3277 struct iwl_priv
*priv
= hw
->priv
;
3280 u8 sta_id
= IWL_INVALID_STATION
;
3283 IWL_DEBUG_MAC80211(priv
, "enter\n");
3285 if (iwl3945_mod_params
.sw_crypto
) {
3286 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3290 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3291 static_key
= !iwl_is_associated(priv
);
3294 sta_id
= iwl_find_station(priv
, addr
);
3295 if (sta_id
== IWL_INVALID_STATION
) {
3296 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3302 mutex_lock(&priv
->mutex
);
3303 iwl_scan_cancel_timeout(priv
, 100);
3304 mutex_unlock(&priv
->mutex
);
3309 ret
= iwl3945_set_static_key(priv
, key
);
3311 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3312 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3316 ret
= iwl3945_remove_static_key(priv
);
3318 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3319 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3325 IWL_DEBUG_MAC80211(priv
, "leave\n");
3330 /*****************************************************************************
3334 *****************************************************************************/
3336 #ifdef CONFIG_IWLWIFI_DEBUG
3339 * The following adds a new attribute to the sysfs representation
3340 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3341 * used for controlling the debug level.
3343 * See the level definitions in iwl for details.
3345 * The debug_level being managed using sysfs below is a per device debug
3346 * level that is used instead of the global debug level if it (the per
3347 * device debug level) is set.
3349 static ssize_t
show_debug_level(struct device
*d
,
3350 struct device_attribute
*attr
, char *buf
)
3352 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3353 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3355 static ssize_t
store_debug_level(struct device
*d
,
3356 struct device_attribute
*attr
,
3357 const char *buf
, size_t count
)
3359 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3363 ret
= strict_strtoul(buf
, 0, &val
);
3365 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3367 priv
->debug_level
= val
;
3368 if (iwl_alloc_traffic_mem(priv
))
3370 "Not enough memory to generate traffic log\n");
3372 return strnlen(buf
, count
);
3375 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3376 show_debug_level
, store_debug_level
);
3378 #endif /* CONFIG_IWLWIFI_DEBUG */
3380 static ssize_t
show_temperature(struct device
*d
,
3381 struct device_attribute
*attr
, char *buf
)
3383 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3385 if (!iwl_is_alive(priv
))
3388 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3391 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3393 static ssize_t
show_tx_power(struct device
*d
,
3394 struct device_attribute
*attr
, char *buf
)
3396 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3397 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3400 static ssize_t
store_tx_power(struct device
*d
,
3401 struct device_attribute
*attr
,
3402 const char *buf
, size_t count
)
3404 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3405 char *p
= (char *)buf
;
3408 val
= simple_strtoul(p
, &p
, 10);
3410 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3412 iwl3945_hw_reg_set_txpower(priv
, val
);
3417 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3419 static ssize_t
show_flags(struct device
*d
,
3420 struct device_attribute
*attr
, char *buf
)
3422 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3424 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3427 static ssize_t
store_flags(struct device
*d
,
3428 struct device_attribute
*attr
,
3429 const char *buf
, size_t count
)
3431 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3432 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3434 mutex_lock(&priv
->mutex
);
3435 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3436 /* Cancel any currently running scans... */
3437 if (iwl_scan_cancel_timeout(priv
, 100))
3438 IWL_WARN(priv
, "Could not cancel scan.\n");
3440 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3442 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3443 iwlcore_commit_rxon(priv
);
3446 mutex_unlock(&priv
->mutex
);
3451 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3453 static ssize_t
show_filter_flags(struct device
*d
,
3454 struct device_attribute
*attr
, char *buf
)
3456 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3458 return sprintf(buf
, "0x%04X\n",
3459 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3462 static ssize_t
store_filter_flags(struct device
*d
,
3463 struct device_attribute
*attr
,
3464 const char *buf
, size_t count
)
3466 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3467 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3469 mutex_lock(&priv
->mutex
);
3470 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3471 /* Cancel any currently running scans... */
3472 if (iwl_scan_cancel_timeout(priv
, 100))
3473 IWL_WARN(priv
, "Could not cancel scan.\n");
3475 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3476 "0x%04X\n", filter_flags
);
3477 priv
->staging_rxon
.filter_flags
=
3478 cpu_to_le32(filter_flags
);
3479 iwlcore_commit_rxon(priv
);
3482 mutex_unlock(&priv
->mutex
);
3487 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3488 store_filter_flags
);
3490 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3492 static ssize_t
show_measurement(struct device
*d
,
3493 struct device_attribute
*attr
, char *buf
)
3495 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3496 struct iwl_spectrum_notification measure_report
;
3497 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3498 u8
*data
= (u8
*)&measure_report
;
3499 unsigned long flags
;
3501 spin_lock_irqsave(&priv
->lock
, flags
);
3502 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3503 spin_unlock_irqrestore(&priv
->lock
, flags
);
3506 memcpy(&measure_report
, &priv
->measure_report
, size
);
3507 priv
->measurement_status
= 0;
3508 spin_unlock_irqrestore(&priv
->lock
, flags
);
3510 while (size
&& (PAGE_SIZE
- len
)) {
3511 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3512 PAGE_SIZE
- len
, 1);
3514 if (PAGE_SIZE
- len
)
3518 size
-= min(size
, 16U);
3524 static ssize_t
store_measurement(struct device
*d
,
3525 struct device_attribute
*attr
,
3526 const char *buf
, size_t count
)
3528 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3529 struct ieee80211_measurement_params params
= {
3530 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3531 .start_time
= cpu_to_le64(priv
->last_tsf
),
3532 .duration
= cpu_to_le16(1),
3534 u8 type
= IWL_MEASURE_BASIC
;
3540 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3541 channel
= simple_strtoul(p
, NULL
, 0);
3543 params
.channel
= channel
;
3546 while (*p
&& *p
!= ' ')
3549 type
= simple_strtoul(p
+ 1, NULL
, 0);
3552 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3553 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3554 iwl3945_get_measurement(priv
, ¶ms
, type
);
3559 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3560 show_measurement
, store_measurement
);
3561 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3563 static ssize_t
store_retry_rate(struct device
*d
,
3564 struct device_attribute
*attr
,
3565 const char *buf
, size_t count
)
3567 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3569 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3570 if (priv
->retry_rate
<= 0)
3571 priv
->retry_rate
= 1;
3576 static ssize_t
show_retry_rate(struct device
*d
,
3577 struct device_attribute
*attr
, char *buf
)
3579 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3580 return sprintf(buf
, "%d", priv
->retry_rate
);
3583 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3587 static ssize_t
show_channels(struct device
*d
,
3588 struct device_attribute
*attr
, char *buf
)
3590 /* all this shit doesn't belong into sysfs anyway */
3594 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3596 static ssize_t
show_statistics(struct device
*d
,
3597 struct device_attribute
*attr
, char *buf
)
3599 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3600 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3601 u32 len
= 0, ofs
= 0;
3602 u8
*data
= (u8
*)&priv
->statistics_39
;
3605 if (!iwl_is_alive(priv
))
3608 mutex_lock(&priv
->mutex
);
3609 rc
= iwl_send_statistics_request(priv
, 0);
3610 mutex_unlock(&priv
->mutex
);
3614 "Error sending statistics request: 0x%08X\n", rc
);
3618 while (size
&& (PAGE_SIZE
- len
)) {
3619 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3620 PAGE_SIZE
- len
, 1);
3622 if (PAGE_SIZE
- len
)
3626 size
-= min(size
, 16U);
3632 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3634 static ssize_t
show_antenna(struct device
*d
,
3635 struct device_attribute
*attr
, char *buf
)
3637 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3639 if (!iwl_is_alive(priv
))
3642 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3645 static ssize_t
store_antenna(struct device
*d
,
3646 struct device_attribute
*attr
,
3647 const char *buf
, size_t count
)
3649 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3655 if (sscanf(buf
, "%1i", &ant
) != 1) {
3656 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3660 if ((ant
>= 0) && (ant
<= 2)) {
3661 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3662 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3664 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3670 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3672 static ssize_t
show_status(struct device
*d
,
3673 struct device_attribute
*attr
, char *buf
)
3675 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3676 if (!iwl_is_alive(priv
))
3678 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3681 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3683 static ssize_t
dump_error_log(struct device
*d
,
3684 struct device_attribute
*attr
,
3685 const char *buf
, size_t count
)
3687 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3688 char *p
= (char *)buf
;
3691 iwl3945_dump_nic_error_log(priv
);
3693 return strnlen(buf
, count
);
3696 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3698 /*****************************************************************************
3700 * driver setup and tear down
3702 *****************************************************************************/
3704 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3706 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3708 init_waitqueue_head(&priv
->wait_command_queue
);
3710 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
3711 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3712 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3713 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3714 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3715 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3716 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3717 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3718 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3719 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3720 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3722 iwl3945_hw_setup_deferred_work(priv
);
3724 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3725 iwl3945_irq_tasklet
, (unsigned long)priv
);
3728 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3730 iwl3945_hw_cancel_deferred_work(priv
);
3732 cancel_delayed_work_sync(&priv
->init_alive_start
);
3733 cancel_delayed_work(&priv
->scan_check
);
3734 cancel_delayed_work(&priv
->alive_start
);
3735 cancel_work_sync(&priv
->beacon_update
);
3738 static struct attribute
*iwl3945_sysfs_entries
[] = {
3739 &dev_attr_antenna
.attr
,
3740 &dev_attr_channels
.attr
,
3741 &dev_attr_dump_errors
.attr
,
3742 &dev_attr_flags
.attr
,
3743 &dev_attr_filter_flags
.attr
,
3744 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3745 &dev_attr_measurement
.attr
,
3747 &dev_attr_retry_rate
.attr
,
3748 &dev_attr_statistics
.attr
,
3749 &dev_attr_status
.attr
,
3750 &dev_attr_temperature
.attr
,
3751 &dev_attr_tx_power
.attr
,
3752 #ifdef CONFIG_IWLWIFI_DEBUG
3753 &dev_attr_debug_level
.attr
,
3758 static struct attribute_group iwl3945_attribute_group
= {
3759 .name
= NULL
, /* put in device directory */
3760 .attrs
= iwl3945_sysfs_entries
,
3763 static struct ieee80211_ops iwl3945_hw_ops
= {
3764 .tx
= iwl3945_mac_tx
,
3765 .start
= iwl3945_mac_start
,
3766 .stop
= iwl3945_mac_stop
,
3767 .add_interface
= iwl_mac_add_interface
,
3768 .remove_interface
= iwl_mac_remove_interface
,
3769 .config
= iwl_mac_config
,
3770 .configure_filter
= iwl_configure_filter
,
3771 .set_key
= iwl3945_mac_set_key
,
3772 .get_tx_stats
= iwl_mac_get_tx_stats
,
3773 .conf_tx
= iwl_mac_conf_tx
,
3774 .reset_tsf
= iwl_mac_reset_tsf
,
3775 .bss_info_changed
= iwl_bss_info_changed
,
3776 .hw_scan
= iwl_mac_hw_scan
3779 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3782 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3784 priv
->retry_rate
= 1;
3785 priv
->ibss_beacon
= NULL
;
3787 spin_lock_init(&priv
->lock
);
3788 spin_lock_init(&priv
->sta_lock
);
3789 spin_lock_init(&priv
->hcmd_lock
);
3791 INIT_LIST_HEAD(&priv
->free_frames
);
3793 mutex_init(&priv
->mutex
);
3795 /* Clear the driver's (not device's) station table */
3796 iwl_clear_stations_table(priv
);
3798 priv
->data_retry_limit
= -1;
3799 priv
->ieee_channels
= NULL
;
3800 priv
->ieee_rates
= NULL
;
3801 priv
->band
= IEEE80211_BAND_2GHZ
;
3803 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3805 iwl_reset_qos(priv
);
3807 priv
->qos_data
.qos_active
= 0;
3808 priv
->qos_data
.qos_cap
.val
= 0;
3810 priv
->rates_mask
= IWL_RATES_MASK
;
3811 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3813 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3814 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3819 ret
= iwl_init_channel_map(priv
);
3821 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3825 /* Set up txpower settings in driver for all channels */
3826 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3828 goto err_free_channel_map
;
3831 ret
= iwlcore_init_geos(priv
);
3833 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3834 goto err_free_channel_map
;
3836 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3840 err_free_channel_map
:
3841 iwl_free_channel_map(priv
);
3846 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3849 struct ieee80211_hw
*hw
= priv
->hw
;
3851 hw
->rate_control_algorithm
= "iwl-3945-rs";
3852 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3854 /* Tell mac80211 our characteristics */
3855 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3856 IEEE80211_HW_NOISE_DBM
|
3857 IEEE80211_HW_SPECTRUM_MGMT
|
3858 IEEE80211_HW_SUPPORTS_PS
|
3859 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3861 hw
->wiphy
->interface_modes
=
3862 BIT(NL80211_IFTYPE_STATION
) |
3863 BIT(NL80211_IFTYPE_ADHOC
);
3865 hw
->wiphy
->custom_regulatory
= true;
3867 /* Firmware does not support this */
3868 hw
->wiphy
->disable_beacon_hints
= true;
3870 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3871 /* we create the 802.11 header and a zero-length SSID element */
3872 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
3874 /* Default value; 4 EDCA QOS priorities */
3877 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3878 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3879 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3881 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3882 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3883 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3885 ret
= ieee80211_register_hw(priv
->hw
);
3887 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3890 priv
->mac80211_registered
= 1;
3895 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3898 struct iwl_priv
*priv
;
3899 struct ieee80211_hw
*hw
;
3900 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3901 struct iwl3945_eeprom
*eeprom
;
3902 unsigned long flags
;
3904 /***********************
3905 * 1. Allocating HW data
3906 * ********************/
3908 /* mac80211 allocates memory for this device instance, including
3909 * space for this driver's private structure */
3910 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
3912 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
3917 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3920 * Disabling hardware scan means that mac80211 will perform scans
3921 * "the hard way", rather than using device's scan.
3923 if (iwl3945_mod_params
.disable_hw_scan
) {
3924 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
3925 iwl3945_hw_ops
.hw_scan
= NULL
;
3929 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3931 priv
->pci_dev
= pdev
;
3932 priv
->inta_mask
= CSR_INI_SET_MASK
;
3934 #ifdef CONFIG_IWLWIFI_DEBUG
3935 atomic_set(&priv
->restrict_refcnt
, 0);
3937 if (iwl_alloc_traffic_mem(priv
))
3938 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3940 /***************************
3941 * 2. Initializing PCI bus
3942 * *************************/
3943 if (pci_enable_device(pdev
)) {
3945 goto out_ieee80211_free_hw
;
3948 pci_set_master(pdev
);
3950 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3952 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3954 IWL_WARN(priv
, "No suitable DMA available.\n");
3955 goto out_pci_disable_device
;
3958 pci_set_drvdata(pdev
, priv
);
3959 err
= pci_request_regions(pdev
, DRV_NAME
);
3961 goto out_pci_disable_device
;
3963 /***********************
3964 * 3. Read REV Register
3965 * ********************/
3966 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3967 if (!priv
->hw_base
) {
3969 goto out_pci_release_regions
;
3972 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3973 (unsigned long long) pci_resource_len(pdev
, 0));
3974 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3976 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3977 * PCI Tx retries from interfering with C3 CPU state */
3978 pci_write_config_byte(pdev
, 0x41, 0x00);
3980 /* this spin lock will be used in apm_ops.init and EEPROM access
3981 * we should init now
3983 spin_lock_init(&priv
->reg_lock
);
3986 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
3988 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
3992 /***********************
3994 * ********************/
3996 /* Read the EEPROM */
3997 err
= iwl_eeprom_init(priv
);
3999 IWL_ERR(priv
, "Unable to init EEPROM\n");
4002 /* MAC Address location in EEPROM same for 3945/4965 */
4003 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4004 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4005 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4006 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4008 /***********************
4009 * 5. Setup HW Constants
4010 * ********************/
4011 /* Device-specific setup */
4012 if (iwl3945_hw_set_hw_params(priv
)) {
4013 IWL_ERR(priv
, "failed to set hw settings\n");
4014 goto out_eeprom_free
;
4017 /***********************
4019 * ********************/
4021 err
= iwl3945_init_drv(priv
);
4023 IWL_ERR(priv
, "initializing driver failed\n");
4024 goto out_unset_hw_params
;
4027 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4030 /***********************
4032 * ********************/
4034 spin_lock_irqsave(&priv
->lock
, flags
);
4035 iwl_disable_interrupts(priv
);
4036 spin_unlock_irqrestore(&priv
->lock
, flags
);
4038 pci_enable_msi(priv
->pci_dev
);
4040 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4041 IRQF_SHARED
, DRV_NAME
, priv
);
4043 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4044 goto out_disable_msi
;
4047 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4049 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4050 goto out_release_irq
;
4053 iwl_set_rxon_channel(priv
,
4054 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4055 iwl3945_setup_deferred_work(priv
);
4056 iwl3945_setup_rx_handlers(priv
);
4058 /*********************************
4059 * 8. Setup and Register mac80211
4060 * *******************************/
4062 iwl_enable_interrupts(priv
);
4064 err
= iwl3945_setup_mac(priv
);
4066 goto out_remove_sysfs
;
4068 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4070 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4072 /* Start monitoring the killswitch */
4073 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4079 destroy_workqueue(priv
->workqueue
);
4080 priv
->workqueue
= NULL
;
4081 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4083 free_irq(priv
->pci_dev
->irq
, priv
);
4085 pci_disable_msi(priv
->pci_dev
);
4086 iwlcore_free_geos(priv
);
4087 iwl_free_channel_map(priv
);
4088 out_unset_hw_params
:
4089 iwl3945_unset_hw_params(priv
);
4091 iwl_eeprom_free(priv
);
4093 pci_iounmap(pdev
, priv
->hw_base
);
4094 out_pci_release_regions
:
4095 pci_release_regions(pdev
);
4096 out_pci_disable_device
:
4097 pci_set_drvdata(pdev
, NULL
);
4098 pci_disable_device(pdev
);
4099 out_ieee80211_free_hw
:
4100 iwl_free_traffic_mem(priv
);
4101 ieee80211_free_hw(priv
->hw
);
4106 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4108 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4109 unsigned long flags
;
4114 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4116 iwl_dbgfs_unregister(priv
);
4118 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4120 if (priv
->mac80211_registered
) {
4121 ieee80211_unregister_hw(priv
->hw
);
4122 priv
->mac80211_registered
= 0;
4127 /* make sure we flush any pending irq or
4128 * tasklet for the driver
4130 spin_lock_irqsave(&priv
->lock
, flags
);
4131 iwl_disable_interrupts(priv
);
4132 spin_unlock_irqrestore(&priv
->lock
, flags
);
4134 iwl_synchronize_irq(priv
);
4136 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4138 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4140 iwl3945_dealloc_ucode_pci(priv
);
4143 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4144 iwl3945_hw_txq_ctx_free(priv
);
4146 iwl3945_unset_hw_params(priv
);
4147 iwl_clear_stations_table(priv
);
4149 /*netif_stop_queue(dev); */
4150 flush_workqueue(priv
->workqueue
);
4152 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4153 * priv->workqueue... so we can't take down the workqueue
4155 destroy_workqueue(priv
->workqueue
);
4156 priv
->workqueue
= NULL
;
4157 iwl_free_traffic_mem(priv
);
4159 free_irq(pdev
->irq
, priv
);
4160 pci_disable_msi(pdev
);
4162 pci_iounmap(pdev
, priv
->hw_base
);
4163 pci_release_regions(pdev
);
4164 pci_disable_device(pdev
);
4165 pci_set_drvdata(pdev
, NULL
);
4167 iwl_free_channel_map(priv
);
4168 iwlcore_free_geos(priv
);
4170 if (priv
->ibss_beacon
)
4171 dev_kfree_skb(priv
->ibss_beacon
);
4173 ieee80211_free_hw(priv
->hw
);
4177 /*****************************************************************************
4179 * driver and module entry point
4181 *****************************************************************************/
4183 static struct pci_driver iwl3945_driver
= {
4185 .id_table
= iwl3945_hw_card_ids
,
4186 .probe
= iwl3945_pci_probe
,
4187 .remove
= __devexit_p(iwl3945_pci_remove
),
4189 .suspend
= iwl_pci_suspend
,
4190 .resume
= iwl_pci_resume
,
4194 static int __init
iwl3945_init(void)
4198 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4199 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4201 ret
= iwl3945_rate_control_register();
4203 printk(KERN_ERR DRV_NAME
4204 "Unable to register rate control algorithm: %d\n", ret
);
4208 ret
= pci_register_driver(&iwl3945_driver
);
4210 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4211 goto error_register
;
4217 iwl3945_rate_control_unregister();
4221 static void __exit
iwl3945_exit(void)
4223 pci_unregister_driver(&iwl3945_driver
);
4224 iwl3945_rate_control_unregister();
4227 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4229 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, 0444);
4230 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4231 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, 0444);
4232 MODULE_PARM_DESC(swcrypto
,
4233 "using software crypto (default 1 [software])\n");
4234 #ifdef CONFIG_IWLWIFI_DEBUG
4235 module_param_named(debug
, iwl_debug_level
, uint
, 0644);
4236 MODULE_PARM_DESC(debug
, "debug output mask");
4238 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
, int, 0444);
4239 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4240 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, 0444);
4241 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4243 module_exit(iwl3945_exit
);
4244 module_init(iwl3945_init
);