1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 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/slab.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/wireless.h>
41 #include <linux/firmware.h>
42 #include <linux/etherdevice.h>
43 #include <linux/if_arp.h>
45 #include <net/ieee80211_radiotap.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"
58 #include "iwl-helpers.h"
60 #include "iwl-spectrum.h"
63 * module name, copyright, version, etc.
66 #define DRV_DESCRIPTION \
67 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
76 * add "s" to indicate spectrum measurement included.
77 * we add it here to be consistent with previous releases in which
78 * this was configurable.
80 #define DRV_VERSION IWLWIFI_VERSION VD "s"
81 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
82 #define DRV_AUTHOR "<ilw@linux.intel.com>"
84 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
85 MODULE_VERSION(DRV_VERSION
);
86 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
87 MODULE_LICENSE("GPL");
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params
= {
93 /* the rest are 0 by default */
97 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
98 * @priv: eeprom and antenna fields are used to determine antenna flags
100 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
101 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
103 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
104 * IWL_ANTENNA_MAIN - Force MAIN antenna
105 * IWL_ANTENNA_AUX - Force AUX antenna
107 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
109 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
111 switch (iwl3945_mod_params
.antenna
) {
112 case IWL_ANTENNA_DIVERSITY
:
115 case IWL_ANTENNA_MAIN
:
116 if (eeprom
->antenna_switch_type
)
117 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
118 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
120 case IWL_ANTENNA_AUX
:
121 if (eeprom
->antenna_switch_type
)
122 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
123 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
126 /* bad antenna selector value */
127 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
128 iwl3945_mod_params
.antenna
);
130 return 0; /* "diversity" is default if error */
133 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
134 struct ieee80211_key_conf
*keyconf
,
138 __le16 key_flags
= 0;
141 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
142 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
144 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
145 key_flags
|= STA_KEY_MULTICAST_MSK
;
147 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
148 keyconf
->hw_key_idx
= keyconf
->keyidx
;
149 key_flags
&= ~STA_KEY_FLG_INVALID
;
151 spin_lock_irqsave(&priv
->sta_lock
, flags
);
152 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
153 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
154 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
157 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
160 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
161 == STA_KEY_FLG_NO_ENC
)
162 priv
->stations
[sta_id
].sta
.key
.key_offset
=
163 iwl_get_free_ucode_key_index(priv
);
164 /* else, we are overriding an existing key => no need to allocated room
167 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
168 "no space for a new key");
170 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
171 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
172 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
174 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
176 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
178 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
183 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
184 struct ieee80211_key_conf
*keyconf
,
190 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
191 struct ieee80211_key_conf
*keyconf
,
197 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
201 spin_lock_irqsave(&priv
->sta_lock
, flags
);
202 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
203 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
204 sizeof(struct iwl4965_keyinfo
));
205 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
206 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
207 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
208 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
210 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
211 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, 0);
215 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
216 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
220 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
222 switch (keyconf
->alg
) {
224 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
227 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
230 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
233 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
237 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
238 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
244 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
246 int ret
= -EOPNOTSUPP
;
251 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
252 struct ieee80211_key_conf
*key
)
254 if (key
->alg
== ALG_WEP
)
257 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
261 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
263 struct list_head
*element
;
265 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
268 while (!list_empty(&priv
->free_frames
)) {
269 element
= priv
->free_frames
.next
;
271 kfree(list_entry(element
, struct iwl3945_frame
, list
));
272 priv
->frames_count
--;
275 if (priv
->frames_count
) {
276 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
278 priv
->frames_count
= 0;
282 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
284 struct iwl3945_frame
*frame
;
285 struct list_head
*element
;
286 if (list_empty(&priv
->free_frames
)) {
287 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
289 IWL_ERR(priv
, "Could not allocate frame!\n");
293 priv
->frames_count
++;
297 element
= priv
->free_frames
.next
;
299 return list_entry(element
, struct iwl3945_frame
, list
);
302 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
304 memset(frame
, 0, sizeof(*frame
));
305 list_add(&frame
->list
, &priv
->free_frames
);
308 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
309 struct ieee80211_hdr
*hdr
,
313 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
314 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
315 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
318 if (priv
->ibss_beacon
->len
> left
)
321 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
323 return priv
->ibss_beacon
->len
;
326 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
328 struct iwl3945_frame
*frame
;
329 unsigned int frame_size
;
333 frame
= iwl3945_get_free_frame(priv
);
336 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
341 rate
= iwl_rate_get_lowest_plcp(priv
);
343 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
345 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
348 iwl3945_free_frame(priv
, frame
);
353 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
355 if (priv
->shared_virt
)
356 dma_free_coherent(&priv
->pci_dev
->dev
,
357 sizeof(struct iwl3945_shared
),
362 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
363 struct ieee80211_tx_info
*info
,
364 struct iwl_device_cmd
*cmd
,
365 struct sk_buff
*skb_frag
,
368 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
369 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
371 switch (keyinfo
->alg
) {
373 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
374 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
375 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
382 tx_cmd
->sec_ctl
= TX_CMD_SEC_WEP
|
383 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
385 if (keyinfo
->keylen
== 13)
386 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
388 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
390 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
391 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
395 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
401 * handle build REPLY_TX command notification.
403 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
404 struct iwl_device_cmd
*cmd
,
405 struct ieee80211_tx_info
*info
,
406 struct ieee80211_hdr
*hdr
, u8 std_id
)
408 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
409 __le32 tx_flags
= tx_cmd
->tx_flags
;
410 __le16 fc
= hdr
->frame_control
;
412 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
413 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
414 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
415 if (ieee80211_is_mgmt(fc
))
416 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
417 if (ieee80211_is_probe_resp(fc
) &&
418 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
419 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
421 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
422 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
425 tx_cmd
->sta_id
= std_id
;
426 if (ieee80211_has_morefrags(fc
))
427 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
429 if (ieee80211_is_data_qos(fc
)) {
430 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
431 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
432 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
434 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
437 priv
->cfg
->ops
->utils
->rts_tx_cmd_flag(info
, &tx_flags
);
439 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
440 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
442 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
443 if (ieee80211_is_mgmt(fc
)) {
444 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
445 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
447 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
449 tx_cmd
->timeout
.pm_frame_timeout
= 0;
452 tx_cmd
->driver_txop
= 0;
453 tx_cmd
->tx_flags
= tx_flags
;
454 tx_cmd
->next_frame_len
= 0;
458 * start REPLY_TX command process
460 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
462 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
463 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
464 struct iwl3945_tx_cmd
*tx_cmd
;
465 struct iwl_tx_queue
*txq
= NULL
;
466 struct iwl_queue
*q
= NULL
;
467 struct iwl_device_cmd
*out_cmd
;
468 struct iwl_cmd_meta
*out_meta
;
469 dma_addr_t phys_addr
;
470 dma_addr_t txcmd_phys
;
471 int txq_id
= skb_get_queue_mapping(skb
);
472 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
479 u8 wait_write_ptr
= 0;
483 spin_lock_irqsave(&priv
->lock
, flags
);
484 if (iwl_is_rfkill(priv
)) {
485 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
489 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
490 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
494 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
497 fc
= hdr
->frame_control
;
499 #ifdef CONFIG_IWLWIFI_DEBUG
500 if (ieee80211_is_auth(fc
))
501 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
502 else if (ieee80211_is_assoc_req(fc
))
503 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
504 else if (ieee80211_is_reassoc_req(fc
))
505 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
508 /* drop all non-injected data frame if we are not associated */
509 if (ieee80211_is_data(fc
) &&
510 !(info
->flags
& IEEE80211_TX_CTL_INJECTED
) &&
511 (!iwl_is_associated(priv
) ||
512 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
513 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
517 spin_unlock_irqrestore(&priv
->lock
, flags
);
519 hdr_len
= ieee80211_hdrlen(fc
);
521 /* Find (or create) index into station table for destination station */
522 if (info
->flags
& IEEE80211_TX_CTL_INJECTED
)
523 sta_id
= priv
->hw_params
.bcast_sta_id
;
525 sta_id
= iwl_get_sta_id(priv
, hdr
);
526 if (sta_id
== IWL_INVALID_STATION
) {
527 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
532 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
534 if (ieee80211_is_data_qos(fc
)) {
535 qc
= ieee80211_get_qos_ctl(hdr
);
536 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
537 if (unlikely(tid
>= MAX_TID_COUNT
))
539 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
541 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
543 cpu_to_le16(IEEE80211_SCTL_FRAG
));
547 /* Descriptor for chosen Tx queue */
548 txq
= &priv
->txq
[txq_id
];
551 if ((iwl_queue_space(q
) < q
->high_mark
))
554 spin_lock_irqsave(&priv
->lock
, flags
);
556 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
558 /* Set up driver data for this TFD */
559 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
560 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
562 /* Init first empty entry in queue's array of Tx/cmd buffers */
563 out_cmd
= txq
->cmd
[idx
];
564 out_meta
= &txq
->meta
[idx
];
565 tx_cmd
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
566 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
567 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
570 * Set up the Tx-command (not MAC!) header.
571 * Store the chosen Tx queue and TFD index within the sequence field;
572 * after Tx, uCode's Tx response will return this value so driver can
573 * locate the frame within the tx queue and do post-tx processing.
575 out_cmd
->hdr
.cmd
= REPLY_TX
;
576 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
577 INDEX_TO_SEQ(q
->write_ptr
)));
579 /* Copy MAC header from skb into command buffer */
580 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
583 if (info
->control
.hw_key
)
584 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
586 /* TODO need this for burst mode later on */
587 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
589 /* set is_hcca to 0; it probably will never be implemented */
590 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
592 /* Total # bytes to be transmitted */
594 tx_cmd
->len
= cpu_to_le16(len
);
596 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
597 iwl_update_stats(priv
, true, fc
, len
);
598 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
599 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
601 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
602 txq
->need_update
= 1;
604 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
607 txq
->need_update
= 0;
610 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
611 le16_to_cpu(out_cmd
->hdr
.sequence
));
612 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd
->tx_flags
));
613 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
614 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx_cmd
->hdr
,
615 ieee80211_hdrlen(fc
));
618 * Use the first empty entry in this queue's command buffer array
619 * to contain the Tx command and MAC header concatenated together
620 * (payload data will be in another buffer).
621 * Size of this varies, due to varying MAC header length.
622 * If end is not dword aligned, we'll have 2 extra bytes at the end
623 * of the MAC header (device reads on dword boundaries).
624 * We'll tell device about this padding later.
626 len
= sizeof(struct iwl3945_tx_cmd
) +
627 sizeof(struct iwl_cmd_header
) + hdr_len
;
630 len
= (len
+ 3) & ~3;
637 /* Physical address of this Tx command's header (not MAC header!),
638 * within command buffer array. */
639 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
640 len
, PCI_DMA_TODEVICE
);
641 /* we do not map meta data ... so we can safely access address to
642 * provide to unmap command*/
643 pci_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
644 pci_unmap_len_set(out_meta
, len
, len
);
646 /* Add buffer containing Tx command and MAC(!) header to TFD's
648 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
649 txcmd_phys
, len
, 1, 0);
652 /* Set up TFD's 2nd entry to point directly to remainder of skb,
653 * if any (802.11 null frames have no payload). */
654 len
= skb
->len
- hdr_len
;
656 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
657 len
, PCI_DMA_TODEVICE
);
658 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
664 /* Tell device the write index *just past* this latest filled TFD */
665 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
666 iwl_txq_update_write_ptr(priv
, txq
);
667 spin_unlock_irqrestore(&priv
->lock
, flags
);
669 if ((iwl_queue_space(q
) < q
->high_mark
)
670 && priv
->mac80211_registered
) {
671 if (wait_write_ptr
) {
672 spin_lock_irqsave(&priv
->lock
, flags
);
673 txq
->need_update
= 1;
674 iwl_txq_update_write_ptr(priv
, txq
);
675 spin_unlock_irqrestore(&priv
->lock
, flags
);
678 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
684 spin_unlock_irqrestore(&priv
->lock
, flags
);
689 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
690 #define BEACON_TIME_MASK_HIGH 0xFF000000
691 #define TIME_UNIT 1024
694 * extended beacon time format
695 * time in usec will be changed into a 32-bit value in 8:24 format
696 * the high 1 byte is the beacon counts
697 * the lower 3 bytes is the time in usec within one beacon interval
700 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
704 u32 interval
= beacon_interval
* 1024;
706 if (!interval
|| !usec
)
709 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
710 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
712 return (quot
<< 24) + rem
;
715 /* base is usually what we get from ucode with each received frame,
716 * the same as HW timer counter counting down
719 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
721 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
722 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
723 u32 interval
= beacon_interval
* TIME_UNIT
;
724 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
725 (addon
& BEACON_TIME_MASK_HIGH
);
727 if (base_low
> addon_low
)
728 res
+= base_low
- addon_low
;
729 else if (base_low
< addon_low
) {
730 res
+= interval
+ base_low
- addon_low
;
735 return cpu_to_le32(res
);
738 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
739 struct ieee80211_measurement_params
*params
,
742 struct iwl_spectrum_cmd spectrum
;
743 struct iwl_rx_packet
*pkt
;
744 struct iwl_host_cmd cmd
= {
745 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
746 .data
= (void *)&spectrum
,
747 .flags
= CMD_WANT_SKB
,
749 u32 add_time
= le64_to_cpu(params
->start_time
);
751 int spectrum_resp_status
;
752 int duration
= le16_to_cpu(params
->duration
);
754 if (iwl_is_associated(priv
))
756 iwl3945_usecs_to_beacons(
757 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
758 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
760 memset(&spectrum
, 0, sizeof(spectrum
));
762 spectrum
.channel_count
= cpu_to_le16(1);
764 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
765 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
766 cmd
.len
= sizeof(spectrum
);
767 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
769 if (iwl_is_associated(priv
))
770 spectrum
.start_time
=
771 iwl3945_add_beacon_time(priv
->last_beacon_time
,
773 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
775 spectrum
.start_time
= 0;
777 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
778 spectrum
.channels
[0].channel
= params
->channel
;
779 spectrum
.channels
[0].type
= type
;
780 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
781 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
782 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
784 rc
= iwl_send_cmd_sync(priv
, &cmd
);
788 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
789 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
790 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
794 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
795 switch (spectrum_resp_status
) {
796 case 0: /* Command will be handled */
797 if (pkt
->u
.spectrum
.id
!= 0xff) {
798 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
800 priv
->measurement_status
&= ~MEASUREMENT_READY
;
802 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
806 case 1: /* Command will not be handled */
811 iwl_free_pages(priv
, cmd
.reply_page
);
816 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
817 struct iwl_rx_mem_buffer
*rxb
)
819 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
820 struct iwl_alive_resp
*palive
;
821 struct delayed_work
*pwork
;
823 palive
= &pkt
->u
.alive_frame
;
825 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
827 palive
->is_valid
, palive
->ver_type
,
828 palive
->ver_subtype
);
830 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
831 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
832 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
833 sizeof(struct iwl_alive_resp
));
834 pwork
= &priv
->init_alive_start
;
836 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
837 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
838 sizeof(struct iwl_alive_resp
));
839 pwork
= &priv
->alive_start
;
840 iwl3945_disable_events(priv
);
843 /* We delay the ALIVE response by 5ms to
844 * give the HW RF Kill time to activate... */
845 if (palive
->is_valid
== UCODE_VALID_OK
)
846 queue_delayed_work(priv
->workqueue
, pwork
,
847 msecs_to_jiffies(5));
849 IWL_WARN(priv
, "uCode did not respond OK.\n");
852 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
853 struct iwl_rx_mem_buffer
*rxb
)
855 #ifdef CONFIG_IWLWIFI_DEBUG
856 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
859 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
863 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
865 struct iwl_priv
*priv
=
866 container_of(work
, struct iwl_priv
, beacon_update
);
867 struct sk_buff
*beacon
;
869 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
870 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
873 IWL_ERR(priv
, "update beacon failed\n");
877 mutex_lock(&priv
->mutex
);
878 /* new beacon skb is allocated every time; dispose previous.*/
879 if (priv
->ibss_beacon
)
880 dev_kfree_skb(priv
->ibss_beacon
);
882 priv
->ibss_beacon
= beacon
;
883 mutex_unlock(&priv
->mutex
);
885 iwl3945_send_beacon_cmd(priv
);
888 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
889 struct iwl_rx_mem_buffer
*rxb
)
891 #ifdef CONFIG_IWLWIFI_DEBUG
892 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
893 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
894 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
896 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
897 "tsf %d %d rate %d\n",
898 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
899 beacon
->beacon_notify_hdr
.failure_frame
,
900 le32_to_cpu(beacon
->ibss_mgr_status
),
901 le32_to_cpu(beacon
->high_tsf
),
902 le32_to_cpu(beacon
->low_tsf
), rate
);
905 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
906 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
907 queue_work(priv
->workqueue
, &priv
->beacon_update
);
910 /* Handle notification from uCode that card's power state is changing
911 * due to software, hardware, or critical temperature RFKILL */
912 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
913 struct iwl_rx_mem_buffer
*rxb
)
915 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
916 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
917 unsigned long status
= priv
->status
;
919 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
920 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
921 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
923 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
924 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
926 if (flags
& HW_CARD_DISABLED
)
927 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
929 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
932 iwl_scan_cancel(priv
);
934 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
935 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
936 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
937 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
939 wake_up_interruptible(&priv
->wait_command_queue
);
943 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
945 * Setup the RX handlers for each of the reply types sent from the uCode
948 * This function chains into the hardware specific files for them to setup
949 * any hardware specific handlers as well.
951 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
953 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
954 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
955 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
956 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
957 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
958 iwl_rx_spectrum_measure_notif
;
959 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
960 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
961 iwl_rx_pm_debug_statistics_notif
;
962 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
965 * The same handler is used for both the REPLY to a discrete
966 * statistics request from the host as well as for the periodic
967 * statistics notifications (after received beacons) from the uCode.
969 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
970 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
972 iwl_setup_rx_scan_handlers(priv
);
973 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
975 /* Set up hardware specific Rx handlers */
976 iwl3945_hw_rx_handler_setup(priv
);
979 /************************** RX-FUNCTIONS ****************************/
981 * Rx theory of operation
983 * The host allocates 32 DMA target addresses and passes the host address
984 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
988 * The host/firmware share two index registers for managing the Rx buffers.
990 * The READ index maps to the first position that the firmware may be writing
991 * to -- the driver can read up to (but not including) this position and get
993 * The READ index is managed by the firmware once the card is enabled.
995 * The WRITE index maps to the last position the driver has read from -- the
996 * position preceding WRITE is the last slot the firmware can place a packet.
998 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1001 * During initialization, the host sets up the READ queue position to the first
1002 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1004 * When the firmware places a packet in a buffer, it will advance the READ index
1005 * and fire the RX interrupt. The driver can then query the READ index and
1006 * process as many packets as possible, moving the WRITE index forward as it
1007 * resets the Rx queue buffers with new memory.
1009 * The management in the driver is as follows:
1010 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1011 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1012 * to replenish the iwl->rxq->rx_free.
1013 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1014 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1015 * 'processed' and 'read' driver indexes as well)
1016 * + A received packet is processed and handed to the kernel network stack,
1017 * detached from the iwl->rxq. The driver 'processed' index is updated.
1018 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1019 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1020 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1021 * were enough free buffers and RX_STALLED is set it is cleared.
1026 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1027 * iwl3945_rx_queue_restock
1028 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1029 * queue, updates firmware pointers, and updates
1030 * the WRITE index. If insufficient rx_free buffers
1031 * are available, schedules iwl3945_rx_replenish
1033 * -- enable interrupts --
1034 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1035 * READ INDEX, detaching the SKB from the pool.
1036 * Moves the packet buffer from queue to rx_used.
1037 * Calls iwl3945_rx_queue_restock to refill any empty
1044 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1046 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1047 dma_addr_t dma_addr
)
1049 return cpu_to_le32((u32
)dma_addr
);
1053 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1055 * If there are slots in the RX queue that need to be restocked,
1056 * and we have free pre-allocated buffers, fill the ranks as much
1057 * as we can, pulling from rx_free.
1059 * This moves the 'write' index forward to catch up with 'processed', and
1060 * also updates the memory address in the firmware to reference the new
1063 static void iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1065 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1066 struct list_head
*element
;
1067 struct iwl_rx_mem_buffer
*rxb
;
1068 unsigned long flags
;
1071 spin_lock_irqsave(&rxq
->lock
, flags
);
1072 write
= rxq
->write
& ~0x7;
1073 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1074 /* Get next free Rx buffer, remove from free list */
1075 element
= rxq
->rx_free
.next
;
1076 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1079 /* Point to Rx buffer via next RBD in circular buffer */
1080 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->page_dma
);
1081 rxq
->queue
[rxq
->write
] = rxb
;
1082 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1085 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1086 /* If the pre-allocated buffer pool is dropping low, schedule to
1088 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1089 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1092 /* If we've added more space for the firmware to place data, tell it.
1093 * Increment device's write pointer in multiples of 8. */
1094 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1095 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1096 spin_lock_irqsave(&rxq
->lock
, flags
);
1097 rxq
->need_update
= 1;
1098 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1099 iwl_rx_queue_update_write_ptr(priv
, rxq
);
1104 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1106 * When moving to rx_free an SKB is allocated for the slot.
1108 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1109 * This is called as a scheduled work item (except for during initialization)
1111 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1113 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1114 struct list_head
*element
;
1115 struct iwl_rx_mem_buffer
*rxb
;
1117 unsigned long flags
;
1118 gfp_t gfp_mask
= priority
;
1121 spin_lock_irqsave(&rxq
->lock
, flags
);
1123 if (list_empty(&rxq
->rx_used
)) {
1124 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1127 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1129 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1130 gfp_mask
|= __GFP_NOWARN
;
1132 if (priv
->hw_params
.rx_page_order
> 0)
1133 gfp_mask
|= __GFP_COMP
;
1135 /* Alloc a new receive buffer */
1136 page
= alloc_pages(gfp_mask
, priv
->hw_params
.rx_page_order
);
1138 if (net_ratelimit())
1139 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1140 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1142 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1143 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1145 /* We don't reschedule replenish work here -- we will
1146 * call the restock method and if it still needs
1147 * more buffers it will schedule replenish */
1151 spin_lock_irqsave(&rxq
->lock
, flags
);
1152 if (list_empty(&rxq
->rx_used
)) {
1153 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1154 __free_pages(page
, priv
->hw_params
.rx_page_order
);
1157 element
= rxq
->rx_used
.next
;
1158 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1160 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1163 /* Get physical address of RB/SKB */
1164 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, page
, 0,
1165 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1166 PCI_DMA_FROMDEVICE
);
1168 spin_lock_irqsave(&rxq
->lock
, flags
);
1170 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1172 priv
->alloc_rxb_page
++;
1174 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1178 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1180 unsigned long flags
;
1182 spin_lock_irqsave(&rxq
->lock
, flags
);
1183 INIT_LIST_HEAD(&rxq
->rx_free
);
1184 INIT_LIST_HEAD(&rxq
->rx_used
);
1185 /* Fill the rx_used queue with _all_ of the Rx buffers */
1186 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1187 /* In the reset function, these buffers may have been allocated
1188 * to an SKB, so we need to unmap and free potential storage */
1189 if (rxq
->pool
[i
].page
!= NULL
) {
1190 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1191 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1192 PCI_DMA_FROMDEVICE
);
1193 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1194 rxq
->pool
[i
].page
= NULL
;
1196 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1199 /* Set us so that we have processed and used all buffers, but have
1200 * not restocked the Rx queue with fresh buffers */
1201 rxq
->read
= rxq
->write
= 0;
1202 rxq
->write_actual
= 0;
1203 rxq
->free_count
= 0;
1204 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1207 void iwl3945_rx_replenish(void *data
)
1209 struct iwl_priv
*priv
= data
;
1210 unsigned long flags
;
1212 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1214 spin_lock_irqsave(&priv
->lock
, flags
);
1215 iwl3945_rx_queue_restock(priv
);
1216 spin_unlock_irqrestore(&priv
->lock
, flags
);
1219 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1221 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1223 iwl3945_rx_queue_restock(priv
);
1227 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1228 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1229 * This free routine walks the list of POOL entries and if SKB is set to
1230 * non NULL it is unmapped and freed
1232 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1235 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1236 if (rxq
->pool
[i
].page
!= NULL
) {
1237 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1238 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1239 PCI_DMA_FROMDEVICE
);
1240 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1241 rxq
->pool
[i
].page
= NULL
;
1245 dma_free_coherent(&priv
->pci_dev
->dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1247 dma_free_coherent(&priv
->pci_dev
->dev
, sizeof(struct iwl_rb_status
),
1248 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1250 rxq
->rb_stts
= NULL
;
1254 /* Convert linear signal-to-noise ratio into dB */
1255 static u8 ratio2dB
[100] = {
1256 /* 0 1 2 3 4 5 6 7 8 9 */
1257 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1258 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1259 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1260 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1261 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1262 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1263 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1264 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1265 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1266 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1269 /* Calculates a relative dB value from a ratio of linear
1270 * (i.e. not dB) signal levels.
1271 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1272 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1274 /* 1000:1 or higher just report as 60 dB */
1275 if (sig_ratio
>= 1000)
1278 /* 100:1 or higher, divide by 10 and use table,
1279 * add 20 dB to make up for divide by 10 */
1280 if (sig_ratio
>= 100)
1281 return 20 + (int)ratio2dB
[sig_ratio
/10];
1283 /* We shouldn't see this */
1287 /* Use table for ratios 1:1 - 99:1 */
1288 return (int)ratio2dB
[sig_ratio
];
1292 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1294 * Uses the priv->rx_handlers callback function array to invoke
1295 * the appropriate handlers, including command responses,
1296 * frame-received notifications, and other notifications.
1298 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1300 struct iwl_rx_mem_buffer
*rxb
;
1301 struct iwl_rx_packet
*pkt
;
1302 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1305 unsigned long flags
;
1308 int total_empty
= 0;
1310 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1311 * buffer that the driver may process (last buffer filled by ucode). */
1312 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1315 /* calculate total frames need to be restock after handling RX */
1316 total_empty
= r
- rxq
->write_actual
;
1317 if (total_empty
< 0)
1318 total_empty
+= RX_QUEUE_SIZE
;
1320 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1322 /* Rx interrupt, but nothing sent from uCode */
1324 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1327 rxb
= rxq
->queue
[i
];
1329 /* If an RXB doesn't have a Rx queue slot associated with it,
1330 * then a bug has been introduced in the queue refilling
1331 * routines -- catch it here */
1332 BUG_ON(rxb
== NULL
);
1334 rxq
->queue
[i
] = NULL
;
1336 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
1337 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1338 PCI_DMA_FROMDEVICE
);
1339 pkt
= rxb_addr(rxb
);
1341 trace_iwlwifi_dev_rx(priv
, pkt
,
1342 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
1344 /* Reclaim a command buffer only if this packet is a response
1345 * to a (driver-originated) command.
1346 * If the packet (e.g. Rx frame) originated from uCode,
1347 * there is no command buffer to reclaim.
1348 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1349 * but apparently a few don't get set; catch them here. */
1350 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1351 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1352 (pkt
->hdr
.cmd
!= REPLY_TX
);
1354 /* Based on type of command response or notification,
1355 * handle those that need handling via function in
1356 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1357 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1358 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1359 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1360 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1361 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1363 /* No handling needed */
1365 "r %d i %d No handler needed for %s, 0x%02x\n",
1366 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1371 * XXX: After here, we should always check rxb->page
1372 * against NULL before touching it or its virtual
1373 * memory (pkt). Because some rx_handler might have
1374 * already taken or freed the pages.
1378 /* Invoke any callbacks, transfer the buffer to caller,
1379 * and fire off the (possibly) blocking iwl_send_cmd()
1380 * as we reclaim the driver command queue */
1382 iwl_tx_cmd_complete(priv
, rxb
);
1384 IWL_WARN(priv
, "Claim null rxb?\n");
1387 /* Reuse the page if possible. For notification packets and
1388 * SKBs that fail to Rx correctly, add them back into the
1389 * rx_free list for reuse later. */
1390 spin_lock_irqsave(&rxq
->lock
, flags
);
1391 if (rxb
->page
!= NULL
) {
1392 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1393 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1394 PCI_DMA_FROMDEVICE
);
1395 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1398 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1400 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1402 i
= (i
+ 1) & RX_QUEUE_MASK
;
1403 /* If there are a lot of unused frames,
1404 * restock the Rx queue so ucode won't assert. */
1409 iwl3945_rx_replenish_now(priv
);
1415 /* Backtrack one entry */
1418 iwl3945_rx_replenish_now(priv
);
1420 iwl3945_rx_queue_restock(priv
);
1423 /* call this function to flush any scheduled tasklet */
1424 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1426 /* wait to make sure we flush pending tasklet*/
1427 synchronize_irq(priv
->pci_dev
->irq
);
1428 tasklet_kill(&priv
->irq_tasklet
);
1431 static const char *desc_lookup(int i
)
1439 return "BAD_CHECKSUM";
1441 return "NMI_INTERRUPT";
1445 return "FATAL_ERROR";
1451 #define ERROR_START_OFFSET (1 * sizeof(u32))
1452 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1454 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1457 u32 desc
, time
, count
, base
, data1
;
1458 u32 blink1
, blink2
, ilink1
, ilink2
;
1460 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1462 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1463 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1468 count
= iwl_read_targ_mem(priv
, base
);
1470 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1471 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1472 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1473 priv
->status
, count
);
1476 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1477 "ilink1 nmiPC Line\n");
1478 for (i
= ERROR_START_OFFSET
;
1479 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1480 i
+= ERROR_ELEM_SIZE
) {
1481 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1483 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1485 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1487 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1489 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1491 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1493 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1496 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1497 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1498 ilink1
, ilink2
, data1
);
1499 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, 0,
1500 0, blink1
, blink2
, ilink1
, ilink2
);
1504 #define EVENT_START_OFFSET (6 * sizeof(u32))
1507 * iwl3945_print_event_log - Dump error event log to syslog
1510 static int iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1511 u32 num_events
, u32 mode
,
1512 int pos
, char **buf
, size_t bufsz
)
1515 u32 base
; /* SRAM byte address of event log header */
1516 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1517 u32 ptr
; /* SRAM byte address of log data */
1518 u32 ev
, time
, data
; /* event log data */
1519 unsigned long reg_flags
;
1521 if (num_events
== 0)
1524 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1527 event_size
= 2 * sizeof(u32
);
1529 event_size
= 3 * sizeof(u32
);
1531 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1533 /* Make sure device is powered up for SRAM reads */
1534 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
1535 iwl_grab_nic_access(priv
);
1537 /* Set starting address; reads will auto-increment */
1538 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
1541 /* "time" is actually "data" for mode 0 (no timestamp).
1542 * place event id # at far right for easier visual parsing. */
1543 for (i
= 0; i
< num_events
; i
++) {
1544 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1545 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1549 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1553 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1554 trace_iwlwifi_dev_ucode_event(priv
, 0,
1558 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1560 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1561 "%010u:0x%08x:%04u\n",
1564 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n",
1566 trace_iwlwifi_dev_ucode_event(priv
, time
,
1572 /* Allow device to power down */
1573 iwl_release_nic_access(priv
);
1574 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
1579 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1581 static int iwl3945_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
1582 u32 num_wraps
, u32 next_entry
,
1584 int pos
, char **buf
, size_t bufsz
)
1587 * display the newest DEFAULT_LOG_ENTRIES entries
1588 * i.e the entries just before the next ont that uCode would fill.
1591 if (next_entry
< size
) {
1592 pos
= iwl3945_print_event_log(priv
,
1593 capacity
- (size
- next_entry
),
1594 size
- next_entry
, mode
,
1596 pos
= iwl3945_print_event_log(priv
, 0,
1600 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1604 if (next_entry
< size
)
1605 pos
= iwl3945_print_event_log(priv
, 0,
1609 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1616 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1617 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1619 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1621 int iwl3945_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
1622 char **buf
, bool display
)
1624 u32 base
; /* SRAM byte address of event log header */
1625 u32 capacity
; /* event log capacity in # entries */
1626 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1627 u32 num_wraps
; /* # times uCode wrapped to top of log */
1628 u32 next_entry
; /* index of next entry to be written by uCode */
1629 u32 size
; /* # entries that we'll print */
1633 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1634 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1635 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1639 /* event log header */
1640 capacity
= iwl_read_targ_mem(priv
, base
);
1641 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1642 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1643 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1645 if (capacity
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1646 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
1647 capacity
, IWL3945_MAX_EVENT_LOG_SIZE
);
1648 capacity
= IWL3945_MAX_EVENT_LOG_SIZE
;
1651 if (next_entry
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1652 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
1653 next_entry
, IWL3945_MAX_EVENT_LOG_SIZE
);
1654 next_entry
= IWL3945_MAX_EVENT_LOG_SIZE
;
1657 size
= num_wraps
? capacity
: next_entry
;
1659 /* bail out if nothing in log */
1661 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1666 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
1667 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1668 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1670 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1671 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1674 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %d count\n",
1677 #ifdef CONFIG_IWLWIFI_DEBUG
1680 bufsz
= capacity
* 48;
1683 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
1687 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
1688 /* if uCode has wrapped back to top of log,
1689 * start at the oldest entry,
1690 * i.e the next one that uCode would fill.
1693 pos
= iwl3945_print_event_log(priv
, next_entry
,
1694 capacity
- next_entry
, mode
,
1697 /* (then/else) start at top of log */
1698 pos
= iwl3945_print_event_log(priv
, 0, next_entry
, mode
,
1701 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1702 next_entry
, size
, mode
,
1705 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1706 next_entry
, size
, mode
,
1712 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1714 u32 inta
, handled
= 0;
1716 unsigned long flags
;
1717 #ifdef CONFIG_IWLWIFI_DEBUG
1721 spin_lock_irqsave(&priv
->lock
, flags
);
1723 /* Ack/clear/reset pending uCode interrupts.
1724 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1725 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1726 inta
= iwl_read32(priv
, CSR_INT
);
1727 iwl_write32(priv
, CSR_INT
, inta
);
1729 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1730 * Any new interrupts that happen after this, either while we're
1731 * in this tasklet, or later, will show up in next ISR/tasklet. */
1732 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1733 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1735 #ifdef CONFIG_IWLWIFI_DEBUG
1736 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1737 /* just for debug */
1738 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1739 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1740 inta
, inta_mask
, inta_fh
);
1744 spin_unlock_irqrestore(&priv
->lock
, flags
);
1746 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1747 * atomic, make sure that inta covers all the interrupts that
1748 * we've discovered, even if FH interrupt came in just after
1749 * reading CSR_INT. */
1750 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1751 inta
|= CSR_INT_BIT_FH_RX
;
1752 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1753 inta
|= CSR_INT_BIT_FH_TX
;
1755 /* Now service all interrupt bits discovered above. */
1756 if (inta
& CSR_INT_BIT_HW_ERR
) {
1757 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1759 /* Tell the device to stop sending interrupts */
1760 iwl_disable_interrupts(priv
);
1762 priv
->isr_stats
.hw
++;
1763 iwl_irq_handle_error(priv
);
1765 handled
|= CSR_INT_BIT_HW_ERR
;
1770 #ifdef CONFIG_IWLWIFI_DEBUG
1771 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1772 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1773 if (inta
& CSR_INT_BIT_SCD
) {
1774 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1775 "the frame/frames.\n");
1776 priv
->isr_stats
.sch
++;
1779 /* Alive notification via Rx interrupt will do the real work */
1780 if (inta
& CSR_INT_BIT_ALIVE
) {
1781 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1782 priv
->isr_stats
.alive
++;
1786 /* Safely ignore these bits for debug checks below */
1787 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1789 /* Error detected by uCode */
1790 if (inta
& CSR_INT_BIT_SW_ERR
) {
1791 IWL_ERR(priv
, "Microcode SW error detected. "
1792 "Restarting 0x%X.\n", inta
);
1793 priv
->isr_stats
.sw
++;
1794 priv
->isr_stats
.sw_err
= inta
;
1795 iwl_irq_handle_error(priv
);
1796 handled
|= CSR_INT_BIT_SW_ERR
;
1799 /* uCode wakes up after power-down sleep */
1800 if (inta
& CSR_INT_BIT_WAKEUP
) {
1801 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1802 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1803 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1804 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1805 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1806 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1807 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1808 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1810 priv
->isr_stats
.wakeup
++;
1811 handled
|= CSR_INT_BIT_WAKEUP
;
1814 /* All uCode command responses, including Tx command responses,
1815 * Rx "responses" (frame-received notification), and other
1816 * notifications from uCode come through here*/
1817 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1818 iwl3945_rx_handle(priv
);
1819 priv
->isr_stats
.rx
++;
1820 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1823 if (inta
& CSR_INT_BIT_FH_TX
) {
1824 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1825 priv
->isr_stats
.tx
++;
1827 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1828 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1829 (FH39_SRVC_CHNL
), 0x0);
1830 handled
|= CSR_INT_BIT_FH_TX
;
1833 if (inta
& ~handled
) {
1834 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1835 priv
->isr_stats
.unhandled
++;
1838 if (inta
& ~priv
->inta_mask
) {
1839 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1840 inta
& ~priv
->inta_mask
);
1841 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1844 /* Re-enable all interrupts */
1845 /* only Re-enable if disabled by irq */
1846 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1847 iwl_enable_interrupts(priv
);
1849 #ifdef CONFIG_IWLWIFI_DEBUG
1850 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1851 inta
= iwl_read32(priv
, CSR_INT
);
1852 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1853 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1854 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1855 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1860 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1861 enum ieee80211_band band
,
1862 u8 is_active
, u8 n_probes
,
1863 struct iwl3945_scan_channel
*scan_ch
)
1865 struct ieee80211_channel
*chan
;
1866 const struct ieee80211_supported_band
*sband
;
1867 const struct iwl_channel_info
*ch_info
;
1868 u16 passive_dwell
= 0;
1869 u16 active_dwell
= 0;
1872 sband
= iwl_get_hw_mode(priv
, band
);
1876 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1877 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1879 if (passive_dwell
<= active_dwell
)
1880 passive_dwell
= active_dwell
+ 1;
1882 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1883 chan
= priv
->scan_request
->channels
[i
];
1885 if (chan
->band
!= band
)
1888 scan_ch
->channel
= chan
->hw_value
;
1890 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1891 if (!is_channel_valid(ch_info
)) {
1892 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1897 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1898 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1899 /* If passive , set up for auto-switch
1900 * and use long active_dwell time.
1902 if (!is_active
|| is_channel_passive(ch_info
) ||
1903 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1904 scan_ch
->type
= 0; /* passive */
1905 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1906 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1908 scan_ch
->type
= 1; /* active */
1911 /* Set direct probe bits. These may be used both for active
1912 * scan channels (probes gets sent right away),
1913 * or for passive channels (probes get se sent only after
1914 * hearing clear Rx packet).*/
1915 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1917 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1919 /* uCode v1 does not allow setting direct probe bits on
1920 * passive channel. */
1921 if ((scan_ch
->type
& 1) && n_probes
)
1922 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1925 /* Set txpower levels to defaults */
1926 scan_ch
->tpc
.dsp_atten
= 110;
1927 /* scan_pwr_info->tpc.dsp_atten; */
1929 /*scan_pwr_info->tpc.tx_gain; */
1930 if (band
== IEEE80211_BAND_5GHZ
)
1931 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1933 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1934 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1936 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1940 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1942 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1943 (scan_ch
->type
& 1) ?
1944 active_dwell
: passive_dwell
);
1950 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
1954 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1955 struct ieee80211_rate
*rates
)
1959 for (i
= 0; i
< IWL_RATE_COUNT_LEGACY
; i
++) {
1960 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1961 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1962 rates
[i
].hw_value_short
= i
;
1964 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1966 * If CCK != 1M then set short preamble rate flag.
1968 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1969 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1974 /******************************************************************************
1976 * uCode download functions
1978 ******************************************************************************/
1980 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1982 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1983 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1984 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1985 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1986 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1987 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1991 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1992 * looking at all data.
1994 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2001 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2003 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2004 IWL39_RTC_INST_LOWER_BOUND
);
2007 for (; len
> 0; len
-= sizeof(u32
), image
++) {
2008 /* read data comes through single port, auto-incr addr */
2009 /* NOTE: Use the debugless read so we don't flood kernel log
2010 * if IWL_DL_IO is set */
2011 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2012 if (val
!= le32_to_cpu(*image
)) {
2013 IWL_ERR(priv
, "uCode INST section is invalid at "
2014 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2015 save_len
- len
, val
, le32_to_cpu(*image
));
2025 IWL_DEBUG_INFO(priv
,
2026 "ucode image in INSTRUCTION memory is good\n");
2033 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2034 * using sample data 100 bytes apart. If these sample points are good,
2035 * it's a pretty good bet that everything between them is good, too.
2037 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2044 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2046 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2047 /* read data comes through single port, auto-incr addr */
2048 /* NOTE: Use the debugless read so we don't flood kernel log
2049 * if IWL_DL_IO is set */
2050 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2051 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2052 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2053 if (val
!= le32_to_cpu(*image
)) {
2054 #if 0 /* Enable this if you want to see details */
2055 IWL_ERR(priv
, "uCode INST section is invalid at "
2056 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2071 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2072 * and verify its contents
2074 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2081 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2082 len
= priv
->ucode_boot
.len
;
2083 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2085 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2089 /* Try initialize */
2090 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2091 len
= priv
->ucode_init
.len
;
2092 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2094 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2098 /* Try runtime/protocol */
2099 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2100 len
= priv
->ucode_code
.len
;
2101 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2103 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2107 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2109 /* Since nothing seems to match, show first several data entries in
2110 * instruction SRAM, so maybe visual inspection will give a clue.
2111 * Selection of bootstrap image (vs. other images) is arbitrary. */
2112 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2113 len
= priv
->ucode_boot
.len
;
2114 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2119 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2121 /* Remove all resets to allow NIC to operate */
2122 iwl_write32(priv
, CSR_RESET
, 0);
2126 * iwl3945_read_ucode - Read uCode images from disk file.
2128 * Copy into buffers for card to fetch via bus-mastering
2130 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2132 const struct iwl_ucode_header
*ucode
;
2133 int ret
= -EINVAL
, index
;
2134 const struct firmware
*ucode_raw
;
2135 /* firmware file name contains uCode/driver compatibility version */
2136 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2137 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2138 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2142 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2144 /* Ask kernel firmware_class module to get the boot firmware off disk.
2145 * request_firmware() is synchronous, file is in memory on return. */
2146 for (index
= api_max
; index
>= api_min
; index
--) {
2147 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2148 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2150 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2157 if (index
< api_max
)
2158 IWL_ERR(priv
, "Loaded firmware %s, "
2159 "which is deprecated. "
2160 " Please use API v%u instead.\n",
2162 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2163 "(%zd bytes) from disk\n",
2164 buf
, ucode_raw
->size
);
2172 /* Make sure that we got at least our header! */
2173 if (ucode_raw
->size
< priv
->cfg
->ops
->ucode
->get_header_size(1)) {
2174 IWL_ERR(priv
, "File size way too small!\n");
2179 /* Data from ucode file: header followed by uCode images */
2180 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2182 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2183 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2184 inst_size
= priv
->cfg
->ops
->ucode
->get_inst_size(ucode
, api_ver
);
2185 data_size
= priv
->cfg
->ops
->ucode
->get_data_size(ucode
, api_ver
);
2186 init_size
= priv
->cfg
->ops
->ucode
->get_init_size(ucode
, api_ver
);
2188 priv
->cfg
->ops
->ucode
->get_init_data_size(ucode
, api_ver
);
2189 boot_size
= priv
->cfg
->ops
->ucode
->get_boot_size(ucode
, api_ver
);
2190 src
= priv
->cfg
->ops
->ucode
->get_data(ucode
, api_ver
);
2192 /* api_ver should match the api version forming part of the
2193 * firmware filename ... but we don't check for that and only rely
2194 * on the API version read from firmware header from here on forward */
2196 if (api_ver
< api_min
|| api_ver
> api_max
) {
2197 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2198 "Driver supports v%u, firmware is v%u.\n",
2200 priv
->ucode_ver
= 0;
2204 if (api_ver
!= api_max
)
2205 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2206 "got %u. New firmware can be obtained "
2207 "from http://www.intellinuxwireless.org.\n",
2210 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2211 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2212 IWL_UCODE_MINOR(priv
->ucode_ver
),
2213 IWL_UCODE_API(priv
->ucode_ver
),
2214 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2216 snprintf(priv
->hw
->wiphy
->fw_version
,
2217 sizeof(priv
->hw
->wiphy
->fw_version
),
2219 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2220 IWL_UCODE_MINOR(priv
->ucode_ver
),
2221 IWL_UCODE_API(priv
->ucode_ver
),
2222 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2224 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2226 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2228 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2230 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2232 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2234 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2238 /* Verify size of file vs. image size info in file's header */
2239 if (ucode_raw
->size
!= priv
->cfg
->ops
->ucode
->get_header_size(api_ver
) +
2240 inst_size
+ data_size
+ init_size
+
2241 init_data_size
+ boot_size
) {
2243 IWL_DEBUG_INFO(priv
,
2244 "uCode file size %zd does not match expected size\n",
2250 /* Verify that uCode images will fit in card's SRAM */
2251 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2252 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2258 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2259 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2264 if (init_size
> IWL39_MAX_INST_SIZE
) {
2265 IWL_DEBUG_INFO(priv
,
2266 "uCode init instr len %d too large to fit in\n",
2271 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2272 IWL_DEBUG_INFO(priv
,
2273 "uCode init data len %d too large to fit in\n",
2278 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2279 IWL_DEBUG_INFO(priv
,
2280 "uCode boot instr len %d too large to fit in\n",
2286 /* Allocate ucode buffers for card's bus-master loading ... */
2288 /* Runtime instructions and 2 copies of data:
2289 * 1) unmodified from disk
2290 * 2) backup cache for save/restore during power-downs */
2291 priv
->ucode_code
.len
= inst_size
;
2292 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2294 priv
->ucode_data
.len
= data_size
;
2295 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2297 priv
->ucode_data_backup
.len
= data_size
;
2298 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2300 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2301 !priv
->ucode_data_backup
.v_addr
)
2304 /* Initialization instructions and data */
2305 if (init_size
&& init_data_size
) {
2306 priv
->ucode_init
.len
= init_size
;
2307 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2309 priv
->ucode_init_data
.len
= init_data_size
;
2310 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2312 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2316 /* Bootstrap (instructions only, no data) */
2318 priv
->ucode_boot
.len
= boot_size
;
2319 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2321 if (!priv
->ucode_boot
.v_addr
)
2325 /* Copy images into buffers for card's bus-master reads ... */
2327 /* Runtime instructions (first block of data in file) */
2329 IWL_DEBUG_INFO(priv
,
2330 "Copying (but not loading) uCode instr len %zd\n", len
);
2331 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2334 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2335 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2337 /* Runtime data (2nd block)
2338 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2340 IWL_DEBUG_INFO(priv
,
2341 "Copying (but not loading) uCode data len %zd\n", len
);
2342 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2343 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2346 /* Initialization instructions (3rd block) */
2349 IWL_DEBUG_INFO(priv
,
2350 "Copying (but not loading) init instr len %zd\n", len
);
2351 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2355 /* Initialization data (4th block) */
2356 if (init_data_size
) {
2357 len
= init_data_size
;
2358 IWL_DEBUG_INFO(priv
,
2359 "Copying (but not loading) init data len %zd\n", len
);
2360 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2364 /* Bootstrap instructions (5th block) */
2366 IWL_DEBUG_INFO(priv
,
2367 "Copying (but not loading) boot instr len %zd\n", len
);
2368 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2370 /* We have our copies now, allow OS release its copies */
2371 release_firmware(ucode_raw
);
2375 IWL_ERR(priv
, "failed to allocate pci memory\n");
2377 iwl3945_dealloc_ucode_pci(priv
);
2380 release_firmware(ucode_raw
);
2388 * iwl3945_set_ucode_ptrs - Set uCode address location
2390 * Tell initialization uCode where to find runtime uCode.
2392 * BSM registers initially contain pointers to initialization uCode.
2393 * We need to replace them to load runtime uCode inst and data,
2394 * and to save runtime data when powering down.
2396 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2401 /* bits 31:0 for 3945 */
2402 pinst
= priv
->ucode_code
.p_addr
;
2403 pdata
= priv
->ucode_data_backup
.p_addr
;
2405 /* Tell bootstrap uCode where to find image to load */
2406 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2407 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2408 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2409 priv
->ucode_data
.len
);
2411 /* Inst byte count must be last to set up, bit 31 signals uCode
2412 * that all new ptr/size info is in place */
2413 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2414 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2416 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2422 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2424 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2426 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2428 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2430 /* Check alive response for "valid" sign from uCode */
2431 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2432 /* We had an error bringing up the hardware, so take it
2433 * all the way back down so we can try again */
2434 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2438 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2439 * This is a paranoid check, because we would not have gotten the
2440 * "initialize" alive if code weren't properly loaded. */
2441 if (iwl3945_verify_ucode(priv
)) {
2442 /* Runtime instruction load was bad;
2443 * take it all the way back down so we can try again */
2444 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2448 /* Send pointers to protocol/runtime uCode image ... init code will
2449 * load and launch runtime uCode, which will send us another "Alive"
2451 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2452 if (iwl3945_set_ucode_ptrs(priv
)) {
2453 /* Runtime instruction load won't happen;
2454 * take it all the way back down so we can try again */
2455 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2461 queue_work(priv
->workqueue
, &priv
->restart
);
2465 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2466 * from protocol/runtime uCode (initialization uCode's
2467 * Alive gets handled by iwl3945_init_alive_start()).
2469 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2471 int thermal_spin
= 0;
2474 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2476 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2477 /* We had an error bringing up the hardware, so take it
2478 * all the way back down so we can try again */
2479 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2483 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2484 * This is a paranoid check, because we would not have gotten the
2485 * "runtime" alive if code weren't properly loaded. */
2486 if (iwl3945_verify_ucode(priv
)) {
2487 /* Runtime instruction load was bad;
2488 * take it all the way back down so we can try again */
2489 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2493 iwl_clear_stations_table(priv
);
2495 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2496 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2499 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2500 /* if RFKILL is not on, then wait for thermal
2501 * sensor in adapter to kick in */
2502 while (iwl3945_hw_get_temperature(priv
) == 0) {
2508 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2511 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2513 /* After the ALIVE response, we can send commands to 3945 uCode */
2514 set_bit(STATUS_ALIVE
, &priv
->status
);
2516 if (iwl_is_rfkill(priv
))
2519 ieee80211_wake_queues(priv
->hw
);
2521 priv
->active_rate
= priv
->rates_mask
;
2522 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2524 iwl_power_update_mode(priv
, true);
2526 if (iwl_is_associated(priv
)) {
2527 struct iwl3945_rxon_cmd
*active_rxon
=
2528 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2530 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2531 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2533 /* Initialize our rx_config data */
2534 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2537 /* Configure Bluetooth device coexistence support */
2538 iwl_send_bt_config(priv
);
2540 /* Configure the adapter for unassociated operation */
2541 iwlcore_commit_rxon(priv
);
2543 iwl3945_reg_txpower_periodic(priv
);
2545 iwl_leds_init(priv
);
2547 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2548 set_bit(STATUS_READY
, &priv
->status
);
2549 wake_up_interruptible(&priv
->wait_command_queue
);
2551 /* reassociate for ADHOC mode */
2552 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2553 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2556 iwl_mac_beacon_update(priv
->hw
, beacon
);
2559 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2560 iwl_set_mode(priv
, priv
->iw_mode
);
2565 queue_work(priv
->workqueue
, &priv
->restart
);
2568 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2570 static void __iwl3945_down(struct iwl_priv
*priv
)
2572 unsigned long flags
;
2573 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2574 struct ieee80211_conf
*conf
= NULL
;
2576 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2578 conf
= ieee80211_get_hw_conf(priv
->hw
);
2581 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2583 iwl_clear_stations_table(priv
);
2585 /* Unblock any waiting calls */
2586 wake_up_interruptible_all(&priv
->wait_command_queue
);
2588 /* Wipe out the EXIT_PENDING status bit if we are not actually
2589 * exiting the module */
2591 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2593 /* stop and reset the on-board processor */
2594 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2596 /* tell the device to stop sending interrupts */
2597 spin_lock_irqsave(&priv
->lock
, flags
);
2598 iwl_disable_interrupts(priv
);
2599 spin_unlock_irqrestore(&priv
->lock
, flags
);
2600 iwl_synchronize_irq(priv
);
2602 if (priv
->mac80211_registered
)
2603 ieee80211_stop_queues(priv
->hw
);
2605 /* If we have not previously called iwl3945_init() then
2606 * clear all bits but the RF Kill bits and return */
2607 if (!iwl_is_init(priv
)) {
2608 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2610 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2611 STATUS_GEO_CONFIGURED
|
2612 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2613 STATUS_EXIT_PENDING
;
2617 /* ...otherwise clear out all the status bits but the RF Kill
2618 * bit and continue taking the NIC down. */
2619 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2621 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2622 STATUS_GEO_CONFIGURED
|
2623 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2625 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2626 STATUS_EXIT_PENDING
;
2628 iwl3945_hw_txq_ctx_stop(priv
);
2629 iwl3945_hw_rxq_stop(priv
);
2631 /* Power-down device's busmaster DMA clocks */
2632 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2635 /* Stop the device, and put it in low power state */
2636 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2639 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2641 if (priv
->ibss_beacon
)
2642 dev_kfree_skb(priv
->ibss_beacon
);
2643 priv
->ibss_beacon
= NULL
;
2645 /* clear out any free frames */
2646 iwl3945_clear_free_frames(priv
);
2649 static void iwl3945_down(struct iwl_priv
*priv
)
2651 mutex_lock(&priv
->mutex
);
2652 __iwl3945_down(priv
);
2653 mutex_unlock(&priv
->mutex
);
2655 iwl3945_cancel_deferred_work(priv
);
2658 #define MAX_HW_RESTARTS 5
2660 static int __iwl3945_up(struct iwl_priv
*priv
)
2664 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2665 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2669 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2670 IWL_ERR(priv
, "ucode not available for device bring up\n");
2674 /* If platform's RF_KILL switch is NOT set to KILL */
2675 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2676 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2677 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2679 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2680 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2684 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2686 rc
= iwl3945_hw_nic_init(priv
);
2688 IWL_ERR(priv
, "Unable to int nic\n");
2692 /* make sure rfkill handshake bits are cleared */
2693 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2694 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2695 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2697 /* clear (again), then enable host interrupts */
2698 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2699 iwl_enable_interrupts(priv
);
2701 /* really make sure rfkill handshake bits are cleared */
2702 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2703 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2705 /* Copy original ucode data image from disk into backup cache.
2706 * This will be used to initialize the on-board processor's
2707 * data SRAM for a clean start when the runtime program first loads. */
2708 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2709 priv
->ucode_data
.len
);
2711 /* We return success when we resume from suspend and rf_kill is on. */
2712 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2715 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2717 iwl_clear_stations_table(priv
);
2719 /* load bootstrap state machine,
2720 * load bootstrap program into processor's memory,
2721 * prepare to load the "initialize" uCode */
2722 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2726 "Unable to set up bootstrap uCode: %d\n", rc
);
2730 /* start card; "initialize" will load runtime ucode */
2731 iwl3945_nic_start(priv
);
2733 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2738 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2739 __iwl3945_down(priv
);
2740 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2742 /* tried to restart and config the device for as long as our
2743 * patience could withstand */
2744 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2749 /*****************************************************************************
2751 * Workqueue callbacks
2753 *****************************************************************************/
2755 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2757 struct iwl_priv
*priv
=
2758 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2760 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2763 mutex_lock(&priv
->mutex
);
2764 iwl3945_init_alive_start(priv
);
2765 mutex_unlock(&priv
->mutex
);
2768 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2770 struct iwl_priv
*priv
=
2771 container_of(data
, struct iwl_priv
, alive_start
.work
);
2773 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2776 mutex_lock(&priv
->mutex
);
2777 iwl3945_alive_start(priv
);
2778 mutex_unlock(&priv
->mutex
);
2782 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2783 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2784 * *is* readable even when device has been SW_RESET into low power mode
2785 * (e.g. during RF KILL).
2787 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2789 struct iwl_priv
*priv
=
2790 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2791 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2792 bool new_rfkill
= !(iwl_read32(priv
, CSR_GP_CNTRL
)
2793 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2795 if (new_rfkill
!= old_rfkill
) {
2797 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2799 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2801 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, new_rfkill
);
2803 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
2804 new_rfkill
? "disable radio" : "enable radio");
2807 /* Keep this running, even if radio now enabled. This will be
2808 * cancelled in mac_start() if system decides to start again */
2809 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2810 round_jiffies_relative(2 * HZ
));
2814 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2815 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2817 struct iwl_priv
*priv
=
2818 container_of(data
, struct iwl_priv
, request_scan
);
2819 struct iwl_host_cmd cmd
= {
2820 .id
= REPLY_SCAN_CMD
,
2821 .len
= sizeof(struct iwl3945_scan_cmd
),
2822 .flags
= CMD_SIZE_HUGE
,
2825 struct iwl3945_scan_cmd
*scan
;
2826 struct ieee80211_conf
*conf
= NULL
;
2828 enum ieee80211_band band
;
2829 bool is_active
= false;
2831 conf
= ieee80211_get_hw_conf(priv
->hw
);
2833 mutex_lock(&priv
->mutex
);
2835 cancel_delayed_work(&priv
->scan_check
);
2837 if (!iwl_is_ready(priv
)) {
2838 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2842 /* Make sure the scan wasn't canceled before this queued work
2843 * was given the chance to run... */
2844 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2847 /* This should never be called or scheduled if there is currently
2848 * a scan active in the hardware. */
2849 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2850 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2851 "Ignoring second request.\n");
2856 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2857 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2861 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2863 "Scan request while abort pending. Queuing.\n");
2867 if (iwl_is_rfkill(priv
)) {
2868 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2872 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2874 "Scan request while uninitialized. Queuing.\n");
2878 if (!priv
->scan_bands
) {
2879 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2884 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2885 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2892 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2894 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2895 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2897 if (iwl_is_associated(priv
)) {
2900 u32 suspend_time
= 100;
2901 u32 scan_suspend_time
= 100;
2902 unsigned long flags
;
2904 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2906 spin_lock_irqsave(&priv
->lock
, flags
);
2907 interval
= priv
->beacon_int
;
2908 spin_unlock_irqrestore(&priv
->lock
, flags
);
2910 scan
->suspend_time
= 0;
2911 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2913 interval
= suspend_time
;
2915 * suspend time format:
2916 * 0-19: beacon interval in usec (time before exec.)
2918 * 24-31: number of beacons (suspend between channels)
2921 extra
= (suspend_time
/ interval
) << 24;
2922 scan_suspend_time
= 0xFF0FFFFF &
2923 (extra
| ((suspend_time
% interval
) * 1024));
2925 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2926 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2927 scan_suspend_time
, interval
);
2930 if (priv
->scan_request
->n_ssids
) {
2932 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2933 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2934 /* always does wildcard anyway */
2935 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2937 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2938 scan
->direct_scan
[p
].len
=
2939 priv
->scan_request
->ssids
[i
].ssid_len
;
2940 memcpy(scan
->direct_scan
[p
].ssid
,
2941 priv
->scan_request
->ssids
[i
].ssid
,
2942 priv
->scan_request
->ssids
[i
].ssid_len
);
2948 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2950 /* We don't build a direct scan probe request; the uCode will do
2951 * that based on the direct_mask added to each channel entry */
2952 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2953 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2954 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2956 /* flags + rate selection */
2958 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
2959 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2960 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2961 scan
->good_CRC_th
= 0;
2962 band
= IEEE80211_BAND_2GHZ
;
2963 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
2964 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2966 * If active scaning is requested but a certain channel
2967 * is marked passive, we can do active scanning if we
2968 * detect transmissions.
2970 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH_DEFAULT
:
2971 IWL_GOOD_CRC_TH_DISABLED
;
2972 band
= IEEE80211_BAND_5GHZ
;
2974 IWL_WARN(priv
, "Invalid scan band count\n");
2978 scan
->tx_cmd
.len
= cpu_to_le16(
2979 iwl_fill_probe_req(priv
,
2980 (struct ieee80211_mgmt
*)scan
->data
,
2981 priv
->scan_request
->ie
,
2982 priv
->scan_request
->ie_len
,
2983 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2985 /* select Rx antennas */
2986 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2988 if (iwl_is_monitor_mode(priv
))
2989 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
2991 scan
->channel_count
=
2992 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2993 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
2995 if (scan
->channel_count
== 0) {
2996 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
3000 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
3001 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
3003 scan
->len
= cpu_to_le16(cmd
.len
);
3005 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3006 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3010 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
3011 IWL_SCAN_CHECK_WATCHDOG
);
3013 mutex_unlock(&priv
->mutex
);
3017 /* can not perform scan make sure we clear scanning
3018 * bits from status so next scan request can be performed.
3019 * if we dont clear scanning status bit here all next scan
3022 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3023 clear_bit(STATUS_SCANNING
, &priv
->status
);
3025 /* inform mac80211 scan aborted */
3026 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3027 mutex_unlock(&priv
->mutex
);
3030 static void iwl3945_bg_restart(struct work_struct
*data
)
3032 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3034 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3037 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3038 mutex_lock(&priv
->mutex
);
3041 mutex_unlock(&priv
->mutex
);
3043 ieee80211_restart_hw(priv
->hw
);
3047 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3050 mutex_lock(&priv
->mutex
);
3052 mutex_unlock(&priv
->mutex
);
3056 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3058 struct iwl_priv
*priv
=
3059 container_of(data
, struct iwl_priv
, rx_replenish
);
3061 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3064 mutex_lock(&priv
->mutex
);
3065 iwl3945_rx_replenish(priv
);
3066 mutex_unlock(&priv
->mutex
);
3069 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3071 void iwl3945_post_associate(struct iwl_priv
*priv
)
3074 struct ieee80211_conf
*conf
= NULL
;
3076 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3077 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3082 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3083 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3085 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3088 if (!priv
->vif
|| !priv
->is_open
)
3091 iwl_scan_cancel_timeout(priv
, 200);
3093 conf
= ieee80211_get_hw_conf(priv
->hw
);
3095 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3096 iwlcore_commit_rxon(priv
);
3098 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3099 iwl_setup_rxon_timing(priv
);
3100 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3101 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3103 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3104 "Attempting to continue.\n");
3106 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3108 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3110 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3111 priv
->assoc_id
, priv
->beacon_int
);
3113 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3114 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3116 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3118 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3119 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3120 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3122 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3124 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3125 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3129 iwlcore_commit_rxon(priv
);
3131 switch (priv
->iw_mode
) {
3132 case NL80211_IFTYPE_STATION
:
3133 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3136 case NL80211_IFTYPE_ADHOC
:
3139 iwl_add_station(priv
, priv
->bssid
, 0, CMD_SYNC
, NULL
);
3140 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3141 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3142 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3144 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3145 iwl3945_send_beacon_cmd(priv
);
3150 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3151 __func__
, priv
->iw_mode
);
3155 iwl_activate_qos(priv
, 0);
3157 /* we have just associated, don't start scan too early */
3158 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3161 /*****************************************************************************
3163 * mac80211 entry point functions
3165 *****************************************************************************/
3167 #define UCODE_READY_TIMEOUT (2 * HZ)
3169 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3171 struct iwl_priv
*priv
= hw
->priv
;
3174 IWL_DEBUG_MAC80211(priv
, "enter\n");
3176 /* we should be verifying the device is ready to be opened */
3177 mutex_lock(&priv
->mutex
);
3179 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3180 * ucode filename and max sizes are card-specific. */
3182 if (!priv
->ucode_code
.len
) {
3183 ret
= iwl3945_read_ucode(priv
);
3185 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3186 mutex_unlock(&priv
->mutex
);
3187 goto out_release_irq
;
3191 ret
= __iwl3945_up(priv
);
3193 mutex_unlock(&priv
->mutex
);
3196 goto out_release_irq
;
3198 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3200 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3201 * mac80211 will not be run successfully. */
3202 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3203 test_bit(STATUS_READY
, &priv
->status
),
3204 UCODE_READY_TIMEOUT
);
3206 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3208 "Wait for START_ALIVE timeout after %dms.\n",
3209 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3211 goto out_release_irq
;
3215 /* ucode is running and will send rfkill notifications,
3216 * no need to poll the killswitch state anymore */
3217 cancel_delayed_work(&priv
->rfkill_poll
);
3219 iwl_led_start(priv
);
3222 IWL_DEBUG_MAC80211(priv
, "leave\n");
3227 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3231 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3233 struct iwl_priv
*priv
= hw
->priv
;
3235 IWL_DEBUG_MAC80211(priv
, "enter\n");
3237 if (!priv
->is_open
) {
3238 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3244 if (iwl_is_ready_rf(priv
)) {
3245 /* stop mac, cancel any scan request and clear
3246 * RXON_FILTER_ASSOC_MSK BIT
3248 mutex_lock(&priv
->mutex
);
3249 iwl_scan_cancel_timeout(priv
, 100);
3250 mutex_unlock(&priv
->mutex
);
3255 flush_workqueue(priv
->workqueue
);
3257 /* start polling the killswitch state again */
3258 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3259 round_jiffies_relative(2 * HZ
));
3261 IWL_DEBUG_MAC80211(priv
, "leave\n");
3264 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3266 struct iwl_priv
*priv
= hw
->priv
;
3268 IWL_DEBUG_MAC80211(priv
, "enter\n");
3270 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3271 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3273 if (iwl3945_tx_skb(priv
, skb
))
3274 dev_kfree_skb_any(skb
);
3276 IWL_DEBUG_MAC80211(priv
, "leave\n");
3277 return NETDEV_TX_OK
;
3280 void iwl3945_config_ap(struct iwl_priv
*priv
)
3284 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3287 /* The following should be done only at AP bring up */
3288 if (!(iwl_is_associated(priv
))) {
3290 /* RXON - unassoc (to set timing command) */
3291 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3292 iwlcore_commit_rxon(priv
);
3295 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3296 iwl_setup_rxon_timing(priv
);
3297 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3298 sizeof(priv
->rxon_timing
),
3299 &priv
->rxon_timing
);
3301 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3302 "Attempting to continue.\n");
3304 /* FIXME: what should be the assoc_id for AP? */
3305 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3306 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3307 priv
->staging_rxon
.flags
|=
3308 RXON_FLG_SHORT_PREAMBLE_MSK
;
3310 priv
->staging_rxon
.flags
&=
3311 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3313 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3314 if (priv
->assoc_capability
&
3315 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3316 priv
->staging_rxon
.flags
|=
3317 RXON_FLG_SHORT_SLOT_MSK
;
3319 priv
->staging_rxon
.flags
&=
3320 ~RXON_FLG_SHORT_SLOT_MSK
;
3322 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3323 priv
->staging_rxon
.flags
&=
3324 ~RXON_FLG_SHORT_SLOT_MSK
;
3326 /* restore RXON assoc */
3327 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3328 iwlcore_commit_rxon(priv
);
3329 iwl_add_station(priv
, iwl_bcast_addr
, 0, CMD_SYNC
, NULL
);
3331 iwl3945_send_beacon_cmd(priv
);
3333 /* FIXME - we need to add code here to detect a totally new
3334 * configuration, reset the AP, unassoc, rxon timing, assoc,
3335 * clear sta table, add BCAST sta... */
3338 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3339 struct ieee80211_vif
*vif
,
3340 struct ieee80211_sta
*sta
,
3341 struct ieee80211_key_conf
*key
)
3343 struct iwl_priv
*priv
= hw
->priv
;
3346 u8 sta_id
= IWL_INVALID_STATION
;
3349 IWL_DEBUG_MAC80211(priv
, "enter\n");
3351 if (iwl3945_mod_params
.sw_crypto
) {
3352 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3356 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3357 static_key
= !iwl_is_associated(priv
);
3360 sta_id
= iwl_find_station(priv
, addr
);
3361 if (sta_id
== IWL_INVALID_STATION
) {
3362 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3368 mutex_lock(&priv
->mutex
);
3369 iwl_scan_cancel_timeout(priv
, 100);
3370 mutex_unlock(&priv
->mutex
);
3375 ret
= iwl3945_set_static_key(priv
, key
);
3377 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3378 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3382 ret
= iwl3945_remove_static_key(priv
);
3384 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3385 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3391 IWL_DEBUG_MAC80211(priv
, "leave\n");
3396 /*****************************************************************************
3400 *****************************************************************************/
3402 #ifdef CONFIG_IWLWIFI_DEBUG
3405 * The following adds a new attribute to the sysfs representation
3406 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3407 * used for controlling the debug level.
3409 * See the level definitions in iwl for details.
3411 * The debug_level being managed using sysfs below is a per device debug
3412 * level that is used instead of the global debug level if it (the per
3413 * device debug level) is set.
3415 static ssize_t
show_debug_level(struct device
*d
,
3416 struct device_attribute
*attr
, char *buf
)
3418 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3419 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3421 static ssize_t
store_debug_level(struct device
*d
,
3422 struct device_attribute
*attr
,
3423 const char *buf
, size_t count
)
3425 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3429 ret
= strict_strtoul(buf
, 0, &val
);
3431 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3433 priv
->debug_level
= val
;
3434 if (iwl_alloc_traffic_mem(priv
))
3436 "Not enough memory to generate traffic log\n");
3438 return strnlen(buf
, count
);
3441 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3442 show_debug_level
, store_debug_level
);
3444 #endif /* CONFIG_IWLWIFI_DEBUG */
3446 static ssize_t
show_temperature(struct device
*d
,
3447 struct device_attribute
*attr
, char *buf
)
3449 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3451 if (!iwl_is_alive(priv
))
3454 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3457 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3459 static ssize_t
show_tx_power(struct device
*d
,
3460 struct device_attribute
*attr
, char *buf
)
3462 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3463 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3466 static ssize_t
store_tx_power(struct device
*d
,
3467 struct device_attribute
*attr
,
3468 const char *buf
, size_t count
)
3470 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3471 char *p
= (char *)buf
;
3474 val
= simple_strtoul(p
, &p
, 10);
3476 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3478 iwl3945_hw_reg_set_txpower(priv
, val
);
3483 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3485 static ssize_t
show_flags(struct device
*d
,
3486 struct device_attribute
*attr
, char *buf
)
3488 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3490 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3493 static ssize_t
store_flags(struct device
*d
,
3494 struct device_attribute
*attr
,
3495 const char *buf
, size_t count
)
3497 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3498 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3500 mutex_lock(&priv
->mutex
);
3501 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3502 /* Cancel any currently running scans... */
3503 if (iwl_scan_cancel_timeout(priv
, 100))
3504 IWL_WARN(priv
, "Could not cancel scan.\n");
3506 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3508 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3509 iwlcore_commit_rxon(priv
);
3512 mutex_unlock(&priv
->mutex
);
3517 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3519 static ssize_t
show_filter_flags(struct device
*d
,
3520 struct device_attribute
*attr
, char *buf
)
3522 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3524 return sprintf(buf
, "0x%04X\n",
3525 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3528 static ssize_t
store_filter_flags(struct device
*d
,
3529 struct device_attribute
*attr
,
3530 const char *buf
, size_t count
)
3532 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3533 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3535 mutex_lock(&priv
->mutex
);
3536 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3537 /* Cancel any currently running scans... */
3538 if (iwl_scan_cancel_timeout(priv
, 100))
3539 IWL_WARN(priv
, "Could not cancel scan.\n");
3541 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3542 "0x%04X\n", filter_flags
);
3543 priv
->staging_rxon
.filter_flags
=
3544 cpu_to_le32(filter_flags
);
3545 iwlcore_commit_rxon(priv
);
3548 mutex_unlock(&priv
->mutex
);
3553 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3554 store_filter_flags
);
3556 static ssize_t
show_measurement(struct device
*d
,
3557 struct device_attribute
*attr
, char *buf
)
3559 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3560 struct iwl_spectrum_notification measure_report
;
3561 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3562 u8
*data
= (u8
*)&measure_report
;
3563 unsigned long flags
;
3565 spin_lock_irqsave(&priv
->lock
, flags
);
3566 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3567 spin_unlock_irqrestore(&priv
->lock
, flags
);
3570 memcpy(&measure_report
, &priv
->measure_report
, size
);
3571 priv
->measurement_status
= 0;
3572 spin_unlock_irqrestore(&priv
->lock
, flags
);
3574 while (size
&& (PAGE_SIZE
- len
)) {
3575 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3576 PAGE_SIZE
- len
, 1);
3578 if (PAGE_SIZE
- len
)
3582 size
-= min(size
, 16U);
3588 static ssize_t
store_measurement(struct device
*d
,
3589 struct device_attribute
*attr
,
3590 const char *buf
, size_t count
)
3592 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3593 struct ieee80211_measurement_params params
= {
3594 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3595 .start_time
= cpu_to_le64(priv
->last_tsf
),
3596 .duration
= cpu_to_le16(1),
3598 u8 type
= IWL_MEASURE_BASIC
;
3604 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3605 channel
= simple_strtoul(p
, NULL
, 0);
3607 params
.channel
= channel
;
3610 while (*p
&& *p
!= ' ')
3613 type
= simple_strtoul(p
+ 1, NULL
, 0);
3616 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3617 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3618 iwl3945_get_measurement(priv
, ¶ms
, type
);
3623 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3624 show_measurement
, store_measurement
);
3626 static ssize_t
store_retry_rate(struct device
*d
,
3627 struct device_attribute
*attr
,
3628 const char *buf
, size_t count
)
3630 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3632 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3633 if (priv
->retry_rate
<= 0)
3634 priv
->retry_rate
= 1;
3639 static ssize_t
show_retry_rate(struct device
*d
,
3640 struct device_attribute
*attr
, char *buf
)
3642 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3643 return sprintf(buf
, "%d", priv
->retry_rate
);
3646 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3650 static ssize_t
show_channels(struct device
*d
,
3651 struct device_attribute
*attr
, char *buf
)
3653 /* all this shit doesn't belong into sysfs anyway */
3657 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3659 static ssize_t
show_statistics(struct device
*d
,
3660 struct device_attribute
*attr
, char *buf
)
3662 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3663 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3664 u32 len
= 0, ofs
= 0;
3665 u8
*data
= (u8
*)&priv
->statistics_39
;
3668 if (!iwl_is_alive(priv
))
3671 mutex_lock(&priv
->mutex
);
3672 rc
= iwl_send_statistics_request(priv
, CMD_SYNC
, false);
3673 mutex_unlock(&priv
->mutex
);
3677 "Error sending statistics request: 0x%08X\n", rc
);
3681 while (size
&& (PAGE_SIZE
- len
)) {
3682 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3683 PAGE_SIZE
- len
, 1);
3685 if (PAGE_SIZE
- len
)
3689 size
-= min(size
, 16U);
3695 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3697 static ssize_t
show_antenna(struct device
*d
,
3698 struct device_attribute
*attr
, char *buf
)
3700 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3702 if (!iwl_is_alive(priv
))
3705 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3708 static ssize_t
store_antenna(struct device
*d
,
3709 struct device_attribute
*attr
,
3710 const char *buf
, size_t count
)
3712 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3718 if (sscanf(buf
, "%1i", &ant
) != 1) {
3719 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3723 if ((ant
>= 0) && (ant
<= 2)) {
3724 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3725 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3727 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3733 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3735 static ssize_t
show_status(struct device
*d
,
3736 struct device_attribute
*attr
, char *buf
)
3738 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3739 if (!iwl_is_alive(priv
))
3741 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3744 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3746 static ssize_t
dump_error_log(struct device
*d
,
3747 struct device_attribute
*attr
,
3748 const char *buf
, size_t count
)
3750 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3751 char *p
= (char *)buf
;
3754 iwl3945_dump_nic_error_log(priv
);
3756 return strnlen(buf
, count
);
3759 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3761 /*****************************************************************************
3763 * driver setup and tear down
3765 *****************************************************************************/
3767 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3769 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3771 init_waitqueue_head(&priv
->wait_command_queue
);
3773 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3774 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3775 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3776 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3777 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3778 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3779 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3780 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3781 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3782 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3784 iwl3945_hw_setup_deferred_work(priv
);
3786 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3787 iwl3945_irq_tasklet
, (unsigned long)priv
);
3790 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3792 iwl3945_hw_cancel_deferred_work(priv
);
3794 cancel_delayed_work_sync(&priv
->init_alive_start
);
3795 cancel_delayed_work(&priv
->scan_check
);
3796 cancel_delayed_work(&priv
->alive_start
);
3797 cancel_work_sync(&priv
->beacon_update
);
3800 static struct attribute
*iwl3945_sysfs_entries
[] = {
3801 &dev_attr_antenna
.attr
,
3802 &dev_attr_channels
.attr
,
3803 &dev_attr_dump_errors
.attr
,
3804 &dev_attr_flags
.attr
,
3805 &dev_attr_filter_flags
.attr
,
3806 &dev_attr_measurement
.attr
,
3807 &dev_attr_retry_rate
.attr
,
3808 &dev_attr_statistics
.attr
,
3809 &dev_attr_status
.attr
,
3810 &dev_attr_temperature
.attr
,
3811 &dev_attr_tx_power
.attr
,
3812 #ifdef CONFIG_IWLWIFI_DEBUG
3813 &dev_attr_debug_level
.attr
,
3818 static struct attribute_group iwl3945_attribute_group
= {
3819 .name
= NULL
, /* put in device directory */
3820 .attrs
= iwl3945_sysfs_entries
,
3823 static struct ieee80211_ops iwl3945_hw_ops
= {
3824 .tx
= iwl3945_mac_tx
,
3825 .start
= iwl3945_mac_start
,
3826 .stop
= iwl3945_mac_stop
,
3827 .add_interface
= iwl_mac_add_interface
,
3828 .remove_interface
= iwl_mac_remove_interface
,
3829 .config
= iwl_mac_config
,
3830 .configure_filter
= iwl_configure_filter
,
3831 .set_key
= iwl3945_mac_set_key
,
3832 .conf_tx
= iwl_mac_conf_tx
,
3833 .reset_tsf
= iwl_mac_reset_tsf
,
3834 .bss_info_changed
= iwl_bss_info_changed
,
3835 .hw_scan
= iwl_mac_hw_scan
3838 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3841 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3843 priv
->retry_rate
= 1;
3844 priv
->ibss_beacon
= NULL
;
3846 spin_lock_init(&priv
->sta_lock
);
3847 spin_lock_init(&priv
->hcmd_lock
);
3849 INIT_LIST_HEAD(&priv
->free_frames
);
3851 mutex_init(&priv
->mutex
);
3852 mutex_init(&priv
->sync_cmd_mutex
);
3854 /* Clear the driver's (not device's) station table */
3855 iwl_clear_stations_table(priv
);
3857 priv
->ieee_channels
= NULL
;
3858 priv
->ieee_rates
= NULL
;
3859 priv
->band
= IEEE80211_BAND_2GHZ
;
3861 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3862 priv
->missed_beacon_threshold
= IWL_MISSED_BEACON_THRESHOLD_DEF
;
3864 iwl_reset_qos(priv
);
3866 priv
->qos_data
.qos_active
= 0;
3867 priv
->qos_data
.qos_cap
.val
= 0;
3869 priv
->rates_mask
= IWL_RATES_MASK
;
3870 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3872 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3873 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3878 ret
= iwl_init_channel_map(priv
);
3880 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3884 /* Set up txpower settings in driver for all channels */
3885 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3887 goto err_free_channel_map
;
3890 ret
= iwlcore_init_geos(priv
);
3892 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3893 goto err_free_channel_map
;
3895 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3899 err_free_channel_map
:
3900 iwl_free_channel_map(priv
);
3905 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3908 struct ieee80211_hw
*hw
= priv
->hw
;
3910 hw
->rate_control_algorithm
= "iwl-3945-rs";
3911 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3913 /* Tell mac80211 our characteristics */
3914 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3915 IEEE80211_HW_NOISE_DBM
|
3916 IEEE80211_HW_SPECTRUM_MGMT
;
3918 if (!priv
->cfg
->broken_powersave
)
3919 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
3920 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3922 hw
->wiphy
->interface_modes
=
3923 BIT(NL80211_IFTYPE_STATION
) |
3924 BIT(NL80211_IFTYPE_ADHOC
);
3926 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
3927 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
3929 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3930 /* we create the 802.11 header and a zero-length SSID element */
3931 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
3933 /* Default value; 4 EDCA QOS priorities */
3936 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3937 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3938 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3940 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3941 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3942 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3944 ret
= ieee80211_register_hw(priv
->hw
);
3946 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3949 priv
->mac80211_registered
= 1;
3954 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3957 struct iwl_priv
*priv
;
3958 struct ieee80211_hw
*hw
;
3959 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3960 struct iwl3945_eeprom
*eeprom
;
3961 unsigned long flags
;
3963 /***********************
3964 * 1. Allocating HW data
3965 * ********************/
3967 /* mac80211 allocates memory for this device instance, including
3968 * space for this driver's private structure */
3969 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
3971 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
3976 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3979 * Disabling hardware scan means that mac80211 will perform scans
3980 * "the hard way", rather than using device's scan.
3982 if (iwl3945_mod_params
.disable_hw_scan
) {
3983 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
3984 iwl3945_hw_ops
.hw_scan
= NULL
;
3988 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3990 priv
->pci_dev
= pdev
;
3991 priv
->inta_mask
= CSR_INI_SET_MASK
;
3993 #ifdef CONFIG_IWLWIFI_DEBUG
3994 atomic_set(&priv
->restrict_refcnt
, 0);
3996 if (iwl_alloc_traffic_mem(priv
))
3997 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3999 /***************************
4000 * 2. Initializing PCI bus
4001 * *************************/
4002 if (pci_enable_device(pdev
)) {
4004 goto out_ieee80211_free_hw
;
4007 pci_set_master(pdev
);
4009 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4011 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4013 IWL_WARN(priv
, "No suitable DMA available.\n");
4014 goto out_pci_disable_device
;
4017 pci_set_drvdata(pdev
, priv
);
4018 err
= pci_request_regions(pdev
, DRV_NAME
);
4020 goto out_pci_disable_device
;
4022 /***********************
4023 * 3. Read REV Register
4024 * ********************/
4025 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4026 if (!priv
->hw_base
) {
4028 goto out_pci_release_regions
;
4031 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4032 (unsigned long long) pci_resource_len(pdev
, 0));
4033 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4035 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4036 * PCI Tx retries from interfering with C3 CPU state */
4037 pci_write_config_byte(pdev
, 0x41, 0x00);
4039 /* these spin locks will be used in apm_ops.init and EEPROM access
4040 * we should init now
4042 spin_lock_init(&priv
->reg_lock
);
4043 spin_lock_init(&priv
->lock
);
4046 * stop and reset the on-board processor just in case it is in a
4047 * strange state ... like being left stranded by a primary kernel
4048 * and this is now the kdump kernel trying to start up
4050 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
4052 /***********************
4054 * ********************/
4056 /* Read the EEPROM */
4057 err
= iwl_eeprom_init(priv
);
4059 IWL_ERR(priv
, "Unable to init EEPROM\n");
4062 /* MAC Address location in EEPROM same for 3945/4965 */
4063 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4064 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4065 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4066 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4068 /***********************
4069 * 5. Setup HW Constants
4070 * ********************/
4071 /* Device-specific setup */
4072 if (iwl3945_hw_set_hw_params(priv
)) {
4073 IWL_ERR(priv
, "failed to set hw settings\n");
4074 goto out_eeprom_free
;
4077 /***********************
4079 * ********************/
4081 err
= iwl3945_init_drv(priv
);
4083 IWL_ERR(priv
, "initializing driver failed\n");
4084 goto out_unset_hw_params
;
4087 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4090 /***********************
4092 * ********************/
4094 spin_lock_irqsave(&priv
->lock
, flags
);
4095 iwl_disable_interrupts(priv
);
4096 spin_unlock_irqrestore(&priv
->lock
, flags
);
4098 pci_enable_msi(priv
->pci_dev
);
4100 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4101 IRQF_SHARED
, DRV_NAME
, priv
);
4103 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4104 goto out_disable_msi
;
4107 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4109 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4110 goto out_release_irq
;
4113 iwl_set_rxon_channel(priv
,
4114 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4115 iwl3945_setup_deferred_work(priv
);
4116 iwl3945_setup_rx_handlers(priv
);
4117 iwl_power_initialize(priv
);
4119 /*********************************
4120 * 8. Setup and Register mac80211
4121 * *******************************/
4123 iwl_enable_interrupts(priv
);
4125 err
= iwl3945_setup_mac(priv
);
4127 goto out_remove_sysfs
;
4129 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4131 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4133 /* Start monitoring the killswitch */
4134 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4140 destroy_workqueue(priv
->workqueue
);
4141 priv
->workqueue
= NULL
;
4142 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4144 free_irq(priv
->pci_dev
->irq
, priv
);
4146 pci_disable_msi(priv
->pci_dev
);
4147 iwlcore_free_geos(priv
);
4148 iwl_free_channel_map(priv
);
4149 out_unset_hw_params
:
4150 iwl3945_unset_hw_params(priv
);
4152 iwl_eeprom_free(priv
);
4154 pci_iounmap(pdev
, priv
->hw_base
);
4155 out_pci_release_regions
:
4156 pci_release_regions(pdev
);
4157 out_pci_disable_device
:
4158 pci_set_drvdata(pdev
, NULL
);
4159 pci_disable_device(pdev
);
4160 out_ieee80211_free_hw
:
4161 iwl_free_traffic_mem(priv
);
4162 ieee80211_free_hw(priv
->hw
);
4167 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4169 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4170 unsigned long flags
;
4175 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4177 iwl_dbgfs_unregister(priv
);
4179 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4181 if (priv
->mac80211_registered
) {
4182 ieee80211_unregister_hw(priv
->hw
);
4183 priv
->mac80211_registered
= 0;
4189 * Make sure device is reset to low power before unloading driver.
4190 * This may be redundant with iwl_down(), but there are paths to
4191 * run iwl_down() without calling apm_ops.stop(), and there are
4192 * paths to avoid running iwl_down() at all before leaving driver.
4193 * This (inexpensive) call *makes sure* device is reset.
4195 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
4197 /* make sure we flush any pending irq or
4198 * tasklet for the driver
4200 spin_lock_irqsave(&priv
->lock
, flags
);
4201 iwl_disable_interrupts(priv
);
4202 spin_unlock_irqrestore(&priv
->lock
, flags
);
4204 iwl_synchronize_irq(priv
);
4206 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4208 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4210 iwl3945_dealloc_ucode_pci(priv
);
4213 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4214 iwl3945_hw_txq_ctx_free(priv
);
4216 iwl3945_unset_hw_params(priv
);
4217 iwl_clear_stations_table(priv
);
4219 /*netif_stop_queue(dev); */
4220 flush_workqueue(priv
->workqueue
);
4222 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4223 * priv->workqueue... so we can't take down the workqueue
4225 destroy_workqueue(priv
->workqueue
);
4226 priv
->workqueue
= NULL
;
4227 iwl_free_traffic_mem(priv
);
4229 free_irq(pdev
->irq
, priv
);
4230 pci_disable_msi(pdev
);
4232 pci_iounmap(pdev
, priv
->hw_base
);
4233 pci_release_regions(pdev
);
4234 pci_disable_device(pdev
);
4235 pci_set_drvdata(pdev
, NULL
);
4237 iwl_free_channel_map(priv
);
4238 iwlcore_free_geos(priv
);
4240 if (priv
->ibss_beacon
)
4241 dev_kfree_skb(priv
->ibss_beacon
);
4243 ieee80211_free_hw(priv
->hw
);
4247 /*****************************************************************************
4249 * driver and module entry point
4251 *****************************************************************************/
4253 static struct pci_driver iwl3945_driver
= {
4255 .id_table
= iwl3945_hw_card_ids
,
4256 .probe
= iwl3945_pci_probe
,
4257 .remove
= __devexit_p(iwl3945_pci_remove
),
4259 .suspend
= iwl_pci_suspend
,
4260 .resume
= iwl_pci_resume
,
4264 static int __init
iwl3945_init(void)
4268 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4269 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4271 ret
= iwl3945_rate_control_register();
4273 printk(KERN_ERR DRV_NAME
4274 "Unable to register rate control algorithm: %d\n", ret
);
4278 ret
= pci_register_driver(&iwl3945_driver
);
4280 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4281 goto error_register
;
4287 iwl3945_rate_control_unregister();
4291 static void __exit
iwl3945_exit(void)
4293 pci_unregister_driver(&iwl3945_driver
);
4294 iwl3945_rate_control_unregister();
4297 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4299 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, S_IRUGO
);
4300 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4301 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, S_IRUGO
);
4302 MODULE_PARM_DESC(swcrypto
,
4303 "using software crypto (default 1 [software])\n");
4304 #ifdef CONFIG_IWLWIFI_DEBUG
4305 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4306 MODULE_PARM_DESC(debug
, "debug output mask");
4308 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
,
4310 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4311 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, S_IRUGO
);
4312 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4314 module_exit(iwl3945_exit
);
4315 module_init(iwl3945_init
);