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/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
57 #include "iwl-helpers.h"
59 #include "iwl-spectrum.h"
62 * module name, copyright, version, etc.
65 #define DRV_DESCRIPTION \
66 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
68 #ifdef CONFIG_IWLWIFI_DEBUG
75 * add "s" to indicate spectrum measurement included.
76 * we add it here to be consistent with previous releases in which
77 * this was configurable.
79 #define DRV_VERSION IWLWIFI_VERSION VD "s"
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
83 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
84 MODULE_VERSION(DRV_VERSION
);
85 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
86 MODULE_LICENSE("GPL");
88 /* module parameters */
89 struct iwl_mod_params iwl3945_mod_params
= {
92 /* the rest are 0 by default */
96 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
97 * @priv: eeprom and antenna fields are used to determine antenna flags
99 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
100 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
102 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
103 * IWL_ANTENNA_MAIN - Force MAIN antenna
104 * IWL_ANTENNA_AUX - Force AUX antenna
106 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
108 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
110 switch (iwl3945_mod_params
.antenna
) {
111 case IWL_ANTENNA_DIVERSITY
:
114 case IWL_ANTENNA_MAIN
:
115 if (eeprom
->antenna_switch_type
)
116 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
117 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
119 case IWL_ANTENNA_AUX
:
120 if (eeprom
->antenna_switch_type
)
121 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
122 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
125 /* bad antenna selector value */
126 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
127 iwl3945_mod_params
.antenna
);
129 return 0; /* "diversity" is default if error */
132 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
133 struct ieee80211_key_conf
*keyconf
,
137 __le16 key_flags
= 0;
140 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
141 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
143 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
144 key_flags
|= STA_KEY_MULTICAST_MSK
;
146 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
147 keyconf
->hw_key_idx
= keyconf
->keyidx
;
148 key_flags
&= ~STA_KEY_FLG_INVALID
;
150 spin_lock_irqsave(&priv
->sta_lock
, flags
);
151 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
152 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
153 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
156 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
159 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
160 == STA_KEY_FLG_NO_ENC
)
161 priv
->stations
[sta_id
].sta
.key
.key_offset
=
162 iwl_get_free_ucode_key_index(priv
);
163 /* else, we are overriding an existing key => no need to allocated room
166 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
167 "no space for a new key");
169 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
170 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
171 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
173 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
175 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
177 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
182 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
183 struct ieee80211_key_conf
*keyconf
,
189 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
190 struct ieee80211_key_conf
*keyconf
,
196 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
200 spin_lock_irqsave(&priv
->sta_lock
, flags
);
201 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
202 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
203 sizeof(struct iwl4965_keyinfo
));
204 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
205 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
206 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
207 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
209 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
210 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, 0);
214 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
215 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
219 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
221 switch (keyconf
->alg
) {
223 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
226 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
229 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
232 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
236 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
237 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
243 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
245 int ret
= -EOPNOTSUPP
;
250 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
251 struct ieee80211_key_conf
*key
)
253 if (key
->alg
== ALG_WEP
)
256 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
260 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
262 struct list_head
*element
;
264 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
267 while (!list_empty(&priv
->free_frames
)) {
268 element
= priv
->free_frames
.next
;
270 kfree(list_entry(element
, struct iwl3945_frame
, list
));
271 priv
->frames_count
--;
274 if (priv
->frames_count
) {
275 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
277 priv
->frames_count
= 0;
281 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
283 struct iwl3945_frame
*frame
;
284 struct list_head
*element
;
285 if (list_empty(&priv
->free_frames
)) {
286 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
288 IWL_ERR(priv
, "Could not allocate frame!\n");
292 priv
->frames_count
++;
296 element
= priv
->free_frames
.next
;
298 return list_entry(element
, struct iwl3945_frame
, list
);
301 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
303 memset(frame
, 0, sizeof(*frame
));
304 list_add(&frame
->list
, &priv
->free_frames
);
307 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
308 struct ieee80211_hdr
*hdr
,
312 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
313 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
314 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
317 if (priv
->ibss_beacon
->len
> left
)
320 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
322 return priv
->ibss_beacon
->len
;
325 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
327 struct iwl3945_frame
*frame
;
328 unsigned int frame_size
;
332 frame
= iwl3945_get_free_frame(priv
);
335 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
340 rate
= iwl_rate_get_lowest_plcp(priv
);
342 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
344 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
347 iwl3945_free_frame(priv
, frame
);
352 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
354 if (priv
->_3945
.shared_virt
)
355 dma_free_coherent(&priv
->pci_dev
->dev
,
356 sizeof(struct iwl3945_shared
),
357 priv
->_3945
.shared_virt
,
358 priv
->_3945
.shared_phys
);
361 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
362 struct ieee80211_tx_info
*info
,
363 struct iwl_device_cmd
*cmd
,
364 struct sk_buff
*skb_frag
,
367 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
368 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
370 switch (keyinfo
->alg
) {
372 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
373 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
374 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
381 tx_cmd
->sec_ctl
= TX_CMD_SEC_WEP
|
382 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
384 if (keyinfo
->keylen
== 13)
385 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
387 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
389 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
390 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
394 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
400 * handle build REPLY_TX command notification.
402 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
403 struct iwl_device_cmd
*cmd
,
404 struct ieee80211_tx_info
*info
,
405 struct ieee80211_hdr
*hdr
, u8 std_id
)
407 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
408 __le32 tx_flags
= tx_cmd
->tx_flags
;
409 __le16 fc
= hdr
->frame_control
;
411 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
412 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
413 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
414 if (ieee80211_is_mgmt(fc
))
415 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
416 if (ieee80211_is_probe_resp(fc
) &&
417 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
418 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
420 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
421 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
424 tx_cmd
->sta_id
= std_id
;
425 if (ieee80211_has_morefrags(fc
))
426 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
428 if (ieee80211_is_data_qos(fc
)) {
429 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
430 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
431 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
433 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
436 priv
->cfg
->ops
->utils
->rts_tx_cmd_flag(info
, &tx_flags
);
438 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
439 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
441 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
442 if (ieee80211_is_mgmt(fc
)) {
443 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
444 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
446 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
448 tx_cmd
->timeout
.pm_frame_timeout
= 0;
451 tx_cmd
->driver_txop
= 0;
452 tx_cmd
->tx_flags
= tx_flags
;
453 tx_cmd
->next_frame_len
= 0;
457 * start REPLY_TX command process
459 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
461 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
462 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
463 struct iwl3945_tx_cmd
*tx_cmd
;
464 struct iwl_tx_queue
*txq
= NULL
;
465 struct iwl_queue
*q
= NULL
;
466 struct iwl_device_cmd
*out_cmd
;
467 struct iwl_cmd_meta
*out_meta
;
468 dma_addr_t phys_addr
;
469 dma_addr_t txcmd_phys
;
470 int txq_id
= skb_get_queue_mapping(skb
);
471 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
478 u8 wait_write_ptr
= 0;
482 spin_lock_irqsave(&priv
->lock
, flags
);
483 if (iwl_is_rfkill(priv
)) {
484 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
488 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
489 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
493 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
496 fc
= hdr
->frame_control
;
498 #ifdef CONFIG_IWLWIFI_DEBUG
499 if (ieee80211_is_auth(fc
))
500 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
501 else if (ieee80211_is_assoc_req(fc
))
502 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
503 else if (ieee80211_is_reassoc_req(fc
))
504 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
507 spin_unlock_irqrestore(&priv
->lock
, flags
);
509 hdr_len
= ieee80211_hdrlen(fc
);
511 /* Find index into station table for destination station */
512 if (!info
->control
.sta
)
513 sta_id
= priv
->hw_params
.bcast_sta_id
;
515 sta_id
= iwl_sta_id(info
->control
.sta
);
516 if (sta_id
== IWL_INVALID_STATION
) {
517 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
522 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
524 if (ieee80211_is_data_qos(fc
)) {
525 qc
= ieee80211_get_qos_ctl(hdr
);
526 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
527 if (unlikely(tid
>= MAX_TID_COUNT
))
529 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
531 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
533 cpu_to_le16(IEEE80211_SCTL_FRAG
));
537 /* Descriptor for chosen Tx queue */
538 txq
= &priv
->txq
[txq_id
];
541 if ((iwl_queue_space(q
) < q
->high_mark
))
544 spin_lock_irqsave(&priv
->lock
, flags
);
546 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
548 /* Set up driver data for this TFD */
549 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
550 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
552 /* Init first empty entry in queue's array of Tx/cmd buffers */
553 out_cmd
= txq
->cmd
[idx
];
554 out_meta
= &txq
->meta
[idx
];
555 tx_cmd
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
556 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
557 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
560 * Set up the Tx-command (not MAC!) header.
561 * Store the chosen Tx queue and TFD index within the sequence field;
562 * after Tx, uCode's Tx response will return this value so driver can
563 * locate the frame within the tx queue and do post-tx processing.
565 out_cmd
->hdr
.cmd
= REPLY_TX
;
566 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
567 INDEX_TO_SEQ(q
->write_ptr
)));
569 /* Copy MAC header from skb into command buffer */
570 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
573 if (info
->control
.hw_key
)
574 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
576 /* TODO need this for burst mode later on */
577 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
579 /* set is_hcca to 0; it probably will never be implemented */
580 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
582 /* Total # bytes to be transmitted */
584 tx_cmd
->len
= cpu_to_le16(len
);
586 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
587 iwl_update_stats(priv
, true, fc
, len
);
588 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
589 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
591 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
592 txq
->need_update
= 1;
594 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
597 txq
->need_update
= 0;
600 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x\n",
601 le16_to_cpu(out_cmd
->hdr
.sequence
));
602 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd
->tx_flags
));
603 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
604 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx_cmd
->hdr
,
605 ieee80211_hdrlen(fc
));
608 * Use the first empty entry in this queue's command buffer array
609 * to contain the Tx command and MAC header concatenated together
610 * (payload data will be in another buffer).
611 * Size of this varies, due to varying MAC header length.
612 * If end is not dword aligned, we'll have 2 extra bytes at the end
613 * of the MAC header (device reads on dword boundaries).
614 * We'll tell device about this padding later.
616 len
= sizeof(struct iwl3945_tx_cmd
) +
617 sizeof(struct iwl_cmd_header
) + hdr_len
;
620 len
= (len
+ 3) & ~3;
627 /* Physical address of this Tx command's header (not MAC header!),
628 * within command buffer array. */
629 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
630 len
, PCI_DMA_TODEVICE
);
631 /* we do not map meta data ... so we can safely access address to
632 * provide to unmap command*/
633 pci_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
634 pci_unmap_len_set(out_meta
, len
, len
);
636 /* Add buffer containing Tx command and MAC(!) header to TFD's
638 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
639 txcmd_phys
, len
, 1, 0);
642 /* Set up TFD's 2nd entry to point directly to remainder of skb,
643 * if any (802.11 null frames have no payload). */
644 len
= skb
->len
- hdr_len
;
646 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
647 len
, PCI_DMA_TODEVICE
);
648 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
654 /* Tell device the write index *just past* this latest filled TFD */
655 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
656 iwl_txq_update_write_ptr(priv
, txq
);
657 spin_unlock_irqrestore(&priv
->lock
, flags
);
659 if ((iwl_queue_space(q
) < q
->high_mark
)
660 && priv
->mac80211_registered
) {
661 if (wait_write_ptr
) {
662 spin_lock_irqsave(&priv
->lock
, flags
);
663 txq
->need_update
= 1;
664 iwl_txq_update_write_ptr(priv
, txq
);
665 spin_unlock_irqrestore(&priv
->lock
, flags
);
668 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
674 spin_unlock_irqrestore(&priv
->lock
, flags
);
679 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
680 #define BEACON_TIME_MASK_HIGH 0xFF000000
681 #define TIME_UNIT 1024
684 * extended beacon time format
685 * time in usec will be changed into a 32-bit value in 8:24 format
686 * the high 1 byte is the beacon counts
687 * the lower 3 bytes is the time in usec within one beacon interval
690 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
694 u32 interval
= beacon_interval
* 1024;
696 if (!interval
|| !usec
)
699 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
700 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
702 return (quot
<< 24) + rem
;
705 /* base is usually what we get from ucode with each received frame,
706 * the same as HW timer counter counting down
709 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
711 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
712 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
713 u32 interval
= beacon_interval
* TIME_UNIT
;
714 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
715 (addon
& BEACON_TIME_MASK_HIGH
);
717 if (base_low
> addon_low
)
718 res
+= base_low
- addon_low
;
719 else if (base_low
< addon_low
) {
720 res
+= interval
+ base_low
- addon_low
;
725 return cpu_to_le32(res
);
728 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
729 struct ieee80211_measurement_params
*params
,
732 struct iwl_spectrum_cmd spectrum
;
733 struct iwl_rx_packet
*pkt
;
734 struct iwl_host_cmd cmd
= {
735 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
736 .data
= (void *)&spectrum
,
737 .flags
= CMD_WANT_SKB
,
739 u32 add_time
= le64_to_cpu(params
->start_time
);
741 int spectrum_resp_status
;
742 int duration
= le16_to_cpu(params
->duration
);
744 if (iwl_is_associated(priv
))
746 iwl3945_usecs_to_beacons(
747 le64_to_cpu(params
->start_time
) - priv
->_3945
.last_tsf
,
748 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
750 memset(&spectrum
, 0, sizeof(spectrum
));
752 spectrum
.channel_count
= cpu_to_le16(1);
754 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
755 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
756 cmd
.len
= sizeof(spectrum
);
757 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
759 if (iwl_is_associated(priv
))
760 spectrum
.start_time
=
761 iwl3945_add_beacon_time(priv
->_3945
.last_beacon_time
,
763 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
765 spectrum
.start_time
= 0;
767 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
768 spectrum
.channels
[0].channel
= params
->channel
;
769 spectrum
.channels
[0].type
= type
;
770 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
771 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
772 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
774 rc
= iwl_send_cmd_sync(priv
, &cmd
);
778 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
779 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
780 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
784 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
785 switch (spectrum_resp_status
) {
786 case 0: /* Command will be handled */
787 if (pkt
->u
.spectrum
.id
!= 0xff) {
788 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
790 priv
->measurement_status
&= ~MEASUREMENT_READY
;
792 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
796 case 1: /* Command will not be handled */
801 iwl_free_pages(priv
, cmd
.reply_page
);
806 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
807 struct iwl_rx_mem_buffer
*rxb
)
809 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
810 struct iwl_alive_resp
*palive
;
811 struct delayed_work
*pwork
;
813 palive
= &pkt
->u
.alive_frame
;
815 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
817 palive
->is_valid
, palive
->ver_type
,
818 palive
->ver_subtype
);
820 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
821 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
822 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
823 sizeof(struct iwl_alive_resp
));
824 pwork
= &priv
->init_alive_start
;
826 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
827 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
828 sizeof(struct iwl_alive_resp
));
829 pwork
= &priv
->alive_start
;
830 iwl3945_disable_events(priv
);
833 /* We delay the ALIVE response by 5ms to
834 * give the HW RF Kill time to activate... */
835 if (palive
->is_valid
== UCODE_VALID_OK
)
836 queue_delayed_work(priv
->workqueue
, pwork
,
837 msecs_to_jiffies(5));
839 IWL_WARN(priv
, "uCode did not respond OK.\n");
842 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
843 struct iwl_rx_mem_buffer
*rxb
)
845 #ifdef CONFIG_IWLWIFI_DEBUG
846 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
849 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
853 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
855 struct iwl_priv
*priv
=
856 container_of(work
, struct iwl_priv
, beacon_update
);
857 struct sk_buff
*beacon
;
859 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
860 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
863 IWL_ERR(priv
, "update beacon failed\n");
867 mutex_lock(&priv
->mutex
);
868 /* new beacon skb is allocated every time; dispose previous.*/
869 if (priv
->ibss_beacon
)
870 dev_kfree_skb(priv
->ibss_beacon
);
872 priv
->ibss_beacon
= beacon
;
873 mutex_unlock(&priv
->mutex
);
875 iwl3945_send_beacon_cmd(priv
);
878 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
879 struct iwl_rx_mem_buffer
*rxb
)
881 #ifdef CONFIG_IWLWIFI_DEBUG
882 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
883 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
884 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
886 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
887 "tsf %d %d rate %d\n",
888 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
889 beacon
->beacon_notify_hdr
.failure_frame
,
890 le32_to_cpu(beacon
->ibss_mgr_status
),
891 le32_to_cpu(beacon
->high_tsf
),
892 le32_to_cpu(beacon
->low_tsf
), rate
);
895 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
896 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
897 queue_work(priv
->workqueue
, &priv
->beacon_update
);
900 /* Handle notification from uCode that card's power state is changing
901 * due to software, hardware, or critical temperature RFKILL */
902 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
903 struct iwl_rx_mem_buffer
*rxb
)
905 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
906 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
907 unsigned long status
= priv
->status
;
909 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
910 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
911 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
913 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
914 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
916 if (flags
& HW_CARD_DISABLED
)
917 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
919 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
922 iwl_scan_cancel(priv
);
924 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
925 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
926 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
927 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
929 wake_up_interruptible(&priv
->wait_command_queue
);
933 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
935 * Setup the RX handlers for each of the reply types sent from the uCode
938 * This function chains into the hardware specific files for them to setup
939 * any hardware specific handlers as well.
941 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
943 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
944 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
945 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
946 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
947 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
948 iwl_rx_spectrum_measure_notif
;
949 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
950 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
951 iwl_rx_pm_debug_statistics_notif
;
952 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
955 * The same handler is used for both the REPLY to a discrete
956 * statistics request from the host as well as for the periodic
957 * statistics notifications (after received beacons) from the uCode.
959 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_reply_statistics
;
960 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
962 iwl_setup_rx_scan_handlers(priv
);
963 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
965 /* Set up hardware specific Rx handlers */
966 iwl3945_hw_rx_handler_setup(priv
);
969 /************************** RX-FUNCTIONS ****************************/
971 * Rx theory of operation
973 * The host allocates 32 DMA target addresses and passes the host address
974 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
978 * The host/firmware share two index registers for managing the Rx buffers.
980 * The READ index maps to the first position that the firmware may be writing
981 * to -- the driver can read up to (but not including) this position and get
983 * The READ index is managed by the firmware once the card is enabled.
985 * The WRITE index maps to the last position the driver has read from -- the
986 * position preceding WRITE is the last slot the firmware can place a packet.
988 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
991 * During initialization, the host sets up the READ queue position to the first
992 * INDEX position, and WRITE to the last (READ - 1 wrapped)
994 * When the firmware places a packet in a buffer, it will advance the READ index
995 * and fire the RX interrupt. The driver can then query the READ index and
996 * process as many packets as possible, moving the WRITE index forward as it
997 * resets the Rx queue buffers with new memory.
999 * The management in the driver is as follows:
1000 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1001 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1002 * to replenish the iwl->rxq->rx_free.
1003 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1004 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1005 * 'processed' and 'read' driver indexes as well)
1006 * + A received packet is processed and handed to the kernel network stack,
1007 * detached from the iwl->rxq. The driver 'processed' index is updated.
1008 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1009 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1010 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1011 * were enough free buffers and RX_STALLED is set it is cleared.
1016 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1017 * iwl3945_rx_queue_restock
1018 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1019 * queue, updates firmware pointers, and updates
1020 * the WRITE index. If insufficient rx_free buffers
1021 * are available, schedules iwl3945_rx_replenish
1023 * -- enable interrupts --
1024 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1025 * READ INDEX, detaching the SKB from the pool.
1026 * Moves the packet buffer from queue to rx_used.
1027 * Calls iwl3945_rx_queue_restock to refill any empty
1034 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1036 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1037 dma_addr_t dma_addr
)
1039 return cpu_to_le32((u32
)dma_addr
);
1043 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1045 * If there are slots in the RX queue that need to be restocked,
1046 * and we have free pre-allocated buffers, fill the ranks as much
1047 * as we can, pulling from rx_free.
1049 * This moves the 'write' index forward to catch up with 'processed', and
1050 * also updates the memory address in the firmware to reference the new
1053 static void iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1055 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1056 struct list_head
*element
;
1057 struct iwl_rx_mem_buffer
*rxb
;
1058 unsigned long flags
;
1061 spin_lock_irqsave(&rxq
->lock
, flags
);
1062 write
= rxq
->write
& ~0x7;
1063 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1064 /* Get next free Rx buffer, remove from free list */
1065 element
= rxq
->rx_free
.next
;
1066 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1069 /* Point to Rx buffer via next RBD in circular buffer */
1070 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->page_dma
);
1071 rxq
->queue
[rxq
->write
] = rxb
;
1072 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1075 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1076 /* If the pre-allocated buffer pool is dropping low, schedule to
1078 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1079 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1082 /* If we've added more space for the firmware to place data, tell it.
1083 * Increment device's write pointer in multiples of 8. */
1084 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1085 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1086 spin_lock_irqsave(&rxq
->lock
, flags
);
1087 rxq
->need_update
= 1;
1088 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1089 iwl_rx_queue_update_write_ptr(priv
, rxq
);
1094 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1096 * When moving to rx_free an SKB is allocated for the slot.
1098 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1099 * This is called as a scheduled work item (except for during initialization)
1101 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1103 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1104 struct list_head
*element
;
1105 struct iwl_rx_mem_buffer
*rxb
;
1107 unsigned long flags
;
1108 gfp_t gfp_mask
= priority
;
1111 spin_lock_irqsave(&rxq
->lock
, flags
);
1113 if (list_empty(&rxq
->rx_used
)) {
1114 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1117 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1119 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1120 gfp_mask
|= __GFP_NOWARN
;
1122 if (priv
->hw_params
.rx_page_order
> 0)
1123 gfp_mask
|= __GFP_COMP
;
1125 /* Alloc a new receive buffer */
1126 page
= alloc_pages(gfp_mask
, priv
->hw_params
.rx_page_order
);
1128 if (net_ratelimit())
1129 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1130 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1132 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1133 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1135 /* We don't reschedule replenish work here -- we will
1136 * call the restock method and if it still needs
1137 * more buffers it will schedule replenish */
1141 spin_lock_irqsave(&rxq
->lock
, flags
);
1142 if (list_empty(&rxq
->rx_used
)) {
1143 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1144 __free_pages(page
, priv
->hw_params
.rx_page_order
);
1147 element
= rxq
->rx_used
.next
;
1148 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1150 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1153 /* Get physical address of RB/SKB */
1154 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, page
, 0,
1155 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1156 PCI_DMA_FROMDEVICE
);
1158 spin_lock_irqsave(&rxq
->lock
, flags
);
1160 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1162 priv
->alloc_rxb_page
++;
1164 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1168 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1170 unsigned long flags
;
1172 spin_lock_irqsave(&rxq
->lock
, flags
);
1173 INIT_LIST_HEAD(&rxq
->rx_free
);
1174 INIT_LIST_HEAD(&rxq
->rx_used
);
1175 /* Fill the rx_used queue with _all_ of the Rx buffers */
1176 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1177 /* In the reset function, these buffers may have been allocated
1178 * to an SKB, so we need to unmap and free potential storage */
1179 if (rxq
->pool
[i
].page
!= NULL
) {
1180 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1181 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1182 PCI_DMA_FROMDEVICE
);
1183 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1184 rxq
->pool
[i
].page
= NULL
;
1186 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1189 /* Set us so that we have processed and used all buffers, but have
1190 * not restocked the Rx queue with fresh buffers */
1191 rxq
->read
= rxq
->write
= 0;
1192 rxq
->write_actual
= 0;
1193 rxq
->free_count
= 0;
1194 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1197 void iwl3945_rx_replenish(void *data
)
1199 struct iwl_priv
*priv
= data
;
1200 unsigned long flags
;
1202 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1204 spin_lock_irqsave(&priv
->lock
, flags
);
1205 iwl3945_rx_queue_restock(priv
);
1206 spin_unlock_irqrestore(&priv
->lock
, flags
);
1209 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1211 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1213 iwl3945_rx_queue_restock(priv
);
1217 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1218 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1219 * This free routine walks the list of POOL entries and if SKB is set to
1220 * non NULL it is unmapped and freed
1222 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1225 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1226 if (rxq
->pool
[i
].page
!= NULL
) {
1227 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1228 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1229 PCI_DMA_FROMDEVICE
);
1230 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1231 rxq
->pool
[i
].page
= NULL
;
1235 dma_free_coherent(&priv
->pci_dev
->dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1237 dma_free_coherent(&priv
->pci_dev
->dev
, sizeof(struct iwl_rb_status
),
1238 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1240 rxq
->rb_stts
= NULL
;
1244 /* Convert linear signal-to-noise ratio into dB */
1245 static u8 ratio2dB
[100] = {
1246 /* 0 1 2 3 4 5 6 7 8 9 */
1247 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1248 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1249 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1250 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1251 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1252 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1253 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1254 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1255 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1256 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1259 /* Calculates a relative dB value from a ratio of linear
1260 * (i.e. not dB) signal levels.
1261 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1262 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1264 /* 1000:1 or higher just report as 60 dB */
1265 if (sig_ratio
>= 1000)
1268 /* 100:1 or higher, divide by 10 and use table,
1269 * add 20 dB to make up for divide by 10 */
1270 if (sig_ratio
>= 100)
1271 return 20 + (int)ratio2dB
[sig_ratio
/10];
1273 /* We shouldn't see this */
1277 /* Use table for ratios 1:1 - 99:1 */
1278 return (int)ratio2dB
[sig_ratio
];
1282 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1284 * Uses the priv->rx_handlers callback function array to invoke
1285 * the appropriate handlers, including command responses,
1286 * frame-received notifications, and other notifications.
1288 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1290 struct iwl_rx_mem_buffer
*rxb
;
1291 struct iwl_rx_packet
*pkt
;
1292 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1295 unsigned long flags
;
1298 int total_empty
= 0;
1300 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1301 * buffer that the driver may process (last buffer filled by ucode). */
1302 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1305 /* calculate total frames need to be restock after handling RX */
1306 total_empty
= r
- rxq
->write_actual
;
1307 if (total_empty
< 0)
1308 total_empty
+= RX_QUEUE_SIZE
;
1310 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1312 /* Rx interrupt, but nothing sent from uCode */
1314 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1317 rxb
= rxq
->queue
[i
];
1319 /* If an RXB doesn't have a Rx queue slot associated with it,
1320 * then a bug has been introduced in the queue refilling
1321 * routines -- catch it here */
1322 BUG_ON(rxb
== NULL
);
1324 rxq
->queue
[i
] = NULL
;
1326 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
1327 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1328 PCI_DMA_FROMDEVICE
);
1329 pkt
= rxb_addr(rxb
);
1331 trace_iwlwifi_dev_rx(priv
, pkt
,
1332 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
1334 /* Reclaim a command buffer only if this packet is a response
1335 * to a (driver-originated) command.
1336 * If the packet (e.g. Rx frame) originated from uCode,
1337 * there is no command buffer to reclaim.
1338 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1339 * but apparently a few don't get set; catch them here. */
1340 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1341 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1342 (pkt
->hdr
.cmd
!= REPLY_TX
);
1344 /* Based on type of command response or notification,
1345 * handle those that need handling via function in
1346 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1347 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1348 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1349 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1350 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1351 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1353 /* No handling needed */
1355 "r %d i %d No handler needed for %s, 0x%02x\n",
1356 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1361 * XXX: After here, we should always check rxb->page
1362 * against NULL before touching it or its virtual
1363 * memory (pkt). Because some rx_handler might have
1364 * already taken or freed the pages.
1368 /* Invoke any callbacks, transfer the buffer to caller,
1369 * and fire off the (possibly) blocking iwl_send_cmd()
1370 * as we reclaim the driver command queue */
1372 iwl_tx_cmd_complete(priv
, rxb
);
1374 IWL_WARN(priv
, "Claim null rxb?\n");
1377 /* Reuse the page if possible. For notification packets and
1378 * SKBs that fail to Rx correctly, add them back into the
1379 * rx_free list for reuse later. */
1380 spin_lock_irqsave(&rxq
->lock
, flags
);
1381 if (rxb
->page
!= NULL
) {
1382 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1383 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1384 PCI_DMA_FROMDEVICE
);
1385 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1388 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1390 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1392 i
= (i
+ 1) & RX_QUEUE_MASK
;
1393 /* If there are a lot of unused frames,
1394 * restock the Rx queue so ucode won't assert. */
1399 iwl3945_rx_replenish_now(priv
);
1405 /* Backtrack one entry */
1408 iwl3945_rx_replenish_now(priv
);
1410 iwl3945_rx_queue_restock(priv
);
1413 /* call this function to flush any scheduled tasklet */
1414 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1416 /* wait to make sure we flush pending tasklet*/
1417 synchronize_irq(priv
->pci_dev
->irq
);
1418 tasklet_kill(&priv
->irq_tasklet
);
1421 static const char *desc_lookup(int i
)
1429 return "BAD_CHECKSUM";
1431 return "NMI_INTERRUPT";
1435 return "FATAL_ERROR";
1441 #define ERROR_START_OFFSET (1 * sizeof(u32))
1442 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1444 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1447 u32 desc
, time
, count
, base
, data1
;
1448 u32 blink1
, blink2
, ilink1
, ilink2
;
1450 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1452 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1453 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1458 count
= iwl_read_targ_mem(priv
, base
);
1460 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1461 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1462 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1463 priv
->status
, count
);
1466 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1467 "ilink1 nmiPC Line\n");
1468 for (i
= ERROR_START_OFFSET
;
1469 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1470 i
+= ERROR_ELEM_SIZE
) {
1471 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1473 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1475 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1477 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1479 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1481 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1483 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1486 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1487 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1488 ilink1
, ilink2
, data1
);
1489 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, 0,
1490 0, blink1
, blink2
, ilink1
, ilink2
);
1494 #define EVENT_START_OFFSET (6 * sizeof(u32))
1497 * iwl3945_print_event_log - Dump error event log to syslog
1500 static int iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1501 u32 num_events
, u32 mode
,
1502 int pos
, char **buf
, size_t bufsz
)
1505 u32 base
; /* SRAM byte address of event log header */
1506 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1507 u32 ptr
; /* SRAM byte address of log data */
1508 u32 ev
, time
, data
; /* event log data */
1509 unsigned long reg_flags
;
1511 if (num_events
== 0)
1514 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1517 event_size
= 2 * sizeof(u32
);
1519 event_size
= 3 * sizeof(u32
);
1521 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1523 /* Make sure device is powered up for SRAM reads */
1524 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
1525 iwl_grab_nic_access(priv
);
1527 /* Set starting address; reads will auto-increment */
1528 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
1531 /* "time" is actually "data" for mode 0 (no timestamp).
1532 * place event id # at far right for easier visual parsing. */
1533 for (i
= 0; i
< num_events
; i
++) {
1534 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1535 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1539 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1543 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1544 trace_iwlwifi_dev_ucode_event(priv
, 0,
1548 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1550 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1551 "%010u:0x%08x:%04u\n",
1554 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n",
1556 trace_iwlwifi_dev_ucode_event(priv
, time
,
1562 /* Allow device to power down */
1563 iwl_release_nic_access(priv
);
1564 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
1569 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1571 static int iwl3945_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
1572 u32 num_wraps
, u32 next_entry
,
1574 int pos
, char **buf
, size_t bufsz
)
1577 * display the newest DEFAULT_LOG_ENTRIES entries
1578 * i.e the entries just before the next ont that uCode would fill.
1581 if (next_entry
< size
) {
1582 pos
= iwl3945_print_event_log(priv
,
1583 capacity
- (size
- next_entry
),
1584 size
- next_entry
, mode
,
1586 pos
= iwl3945_print_event_log(priv
, 0,
1590 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1594 if (next_entry
< size
)
1595 pos
= iwl3945_print_event_log(priv
, 0,
1599 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1606 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1608 int iwl3945_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
1609 char **buf
, bool display
)
1611 u32 base
; /* SRAM byte address of event log header */
1612 u32 capacity
; /* event log capacity in # entries */
1613 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1614 u32 num_wraps
; /* # times uCode wrapped to top of log */
1615 u32 next_entry
; /* index of next entry to be written by uCode */
1616 u32 size
; /* # entries that we'll print */
1620 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1621 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1622 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1626 /* event log header */
1627 capacity
= iwl_read_targ_mem(priv
, base
);
1628 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1629 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1630 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1632 if (capacity
> priv
->cfg
->max_event_log_size
) {
1633 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
1634 capacity
, priv
->cfg
->max_event_log_size
);
1635 capacity
= priv
->cfg
->max_event_log_size
;
1638 if (next_entry
> priv
->cfg
->max_event_log_size
) {
1639 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
1640 next_entry
, priv
->cfg
->max_event_log_size
);
1641 next_entry
= priv
->cfg
->max_event_log_size
;
1644 size
= num_wraps
? capacity
: next_entry
;
1646 /* bail out if nothing in log */
1648 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1652 #ifdef CONFIG_IWLWIFI_DEBUG
1653 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
1654 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1655 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1657 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1658 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1661 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %d count\n",
1664 #ifdef CONFIG_IWLWIFI_DEBUG
1667 bufsz
= capacity
* 48;
1670 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
1674 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
1675 /* if uCode has wrapped back to top of log,
1676 * start at the oldest entry,
1677 * i.e the next one that uCode would fill.
1680 pos
= iwl3945_print_event_log(priv
, next_entry
,
1681 capacity
- next_entry
, mode
,
1684 /* (then/else) start at top of log */
1685 pos
= iwl3945_print_event_log(priv
, 0, next_entry
, mode
,
1688 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1689 next_entry
, size
, mode
,
1692 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1693 next_entry
, size
, mode
,
1699 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1701 u32 inta
, handled
= 0;
1703 unsigned long flags
;
1704 #ifdef CONFIG_IWLWIFI_DEBUG
1708 spin_lock_irqsave(&priv
->lock
, flags
);
1710 /* Ack/clear/reset pending uCode interrupts.
1711 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1712 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1713 inta
= iwl_read32(priv
, CSR_INT
);
1714 iwl_write32(priv
, CSR_INT
, inta
);
1716 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1717 * Any new interrupts that happen after this, either while we're
1718 * in this tasklet, or later, will show up in next ISR/tasklet. */
1719 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1720 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1722 #ifdef CONFIG_IWLWIFI_DEBUG
1723 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1724 /* just for debug */
1725 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1726 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1727 inta
, inta_mask
, inta_fh
);
1731 spin_unlock_irqrestore(&priv
->lock
, flags
);
1733 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1734 * atomic, make sure that inta covers all the interrupts that
1735 * we've discovered, even if FH interrupt came in just after
1736 * reading CSR_INT. */
1737 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1738 inta
|= CSR_INT_BIT_FH_RX
;
1739 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1740 inta
|= CSR_INT_BIT_FH_TX
;
1742 /* Now service all interrupt bits discovered above. */
1743 if (inta
& CSR_INT_BIT_HW_ERR
) {
1744 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1746 /* Tell the device to stop sending interrupts */
1747 iwl_disable_interrupts(priv
);
1749 priv
->isr_stats
.hw
++;
1750 iwl_irq_handle_error(priv
);
1752 handled
|= CSR_INT_BIT_HW_ERR
;
1757 #ifdef CONFIG_IWLWIFI_DEBUG
1758 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1759 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1760 if (inta
& CSR_INT_BIT_SCD
) {
1761 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1762 "the frame/frames.\n");
1763 priv
->isr_stats
.sch
++;
1766 /* Alive notification via Rx interrupt will do the real work */
1767 if (inta
& CSR_INT_BIT_ALIVE
) {
1768 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1769 priv
->isr_stats
.alive
++;
1773 /* Safely ignore these bits for debug checks below */
1774 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1776 /* Error detected by uCode */
1777 if (inta
& CSR_INT_BIT_SW_ERR
) {
1778 IWL_ERR(priv
, "Microcode SW error detected. "
1779 "Restarting 0x%X.\n", inta
);
1780 priv
->isr_stats
.sw
++;
1781 priv
->isr_stats
.sw_err
= inta
;
1782 iwl_irq_handle_error(priv
);
1783 handled
|= CSR_INT_BIT_SW_ERR
;
1786 /* uCode wakes up after power-down sleep */
1787 if (inta
& CSR_INT_BIT_WAKEUP
) {
1788 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1789 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1790 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1791 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1792 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1793 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1794 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1795 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1797 priv
->isr_stats
.wakeup
++;
1798 handled
|= CSR_INT_BIT_WAKEUP
;
1801 /* All uCode command responses, including Tx command responses,
1802 * Rx "responses" (frame-received notification), and other
1803 * notifications from uCode come through here*/
1804 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1805 iwl3945_rx_handle(priv
);
1806 priv
->isr_stats
.rx
++;
1807 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1810 if (inta
& CSR_INT_BIT_FH_TX
) {
1811 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1812 priv
->isr_stats
.tx
++;
1814 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1815 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1816 (FH39_SRVC_CHNL
), 0x0);
1817 handled
|= CSR_INT_BIT_FH_TX
;
1820 if (inta
& ~handled
) {
1821 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1822 priv
->isr_stats
.unhandled
++;
1825 if (inta
& ~priv
->inta_mask
) {
1826 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1827 inta
& ~priv
->inta_mask
);
1828 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1831 /* Re-enable all interrupts */
1832 /* only Re-enable if disabled by irq */
1833 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1834 iwl_enable_interrupts(priv
);
1836 #ifdef CONFIG_IWLWIFI_DEBUG
1837 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1838 inta
= iwl_read32(priv
, CSR_INT
);
1839 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1840 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1841 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1842 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1847 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1848 enum ieee80211_band band
,
1849 u8 is_active
, u8 n_probes
,
1850 struct iwl3945_scan_channel
*scan_ch
,
1851 struct ieee80211_vif
*vif
)
1853 struct ieee80211_channel
*chan
;
1854 const struct ieee80211_supported_band
*sband
;
1855 const struct iwl_channel_info
*ch_info
;
1856 u16 passive_dwell
= 0;
1857 u16 active_dwell
= 0;
1860 sband
= iwl_get_hw_mode(priv
, band
);
1864 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1865 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
, vif
);
1867 if (passive_dwell
<= active_dwell
)
1868 passive_dwell
= active_dwell
+ 1;
1870 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1871 chan
= priv
->scan_request
->channels
[i
];
1873 if (chan
->band
!= band
)
1876 scan_ch
->channel
= chan
->hw_value
;
1878 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1879 if (!is_channel_valid(ch_info
)) {
1880 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1885 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1886 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1887 /* If passive , set up for auto-switch
1888 * and use long active_dwell time.
1890 if (!is_active
|| is_channel_passive(ch_info
) ||
1891 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1892 scan_ch
->type
= 0; /* passive */
1893 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1894 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1896 scan_ch
->type
= 1; /* active */
1899 /* Set direct probe bits. These may be used both for active
1900 * scan channels (probes gets sent right away),
1901 * or for passive channels (probes get se sent only after
1902 * hearing clear Rx packet).*/
1903 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1905 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1907 /* uCode v1 does not allow setting direct probe bits on
1908 * passive channel. */
1909 if ((scan_ch
->type
& 1) && n_probes
)
1910 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1913 /* Set txpower levels to defaults */
1914 scan_ch
->tpc
.dsp_atten
= 110;
1915 /* scan_pwr_info->tpc.dsp_atten; */
1917 /*scan_pwr_info->tpc.tx_gain; */
1918 if (band
== IEEE80211_BAND_5GHZ
)
1919 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1921 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1922 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1924 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1928 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1930 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1931 (scan_ch
->type
& 1) ?
1932 active_dwell
: passive_dwell
);
1938 IWL_DEBUG_SCAN(priv
, "total channels to scan %d\n", added
);
1942 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1943 struct ieee80211_rate
*rates
)
1947 for (i
= 0; i
< IWL_RATE_COUNT_LEGACY
; i
++) {
1948 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1949 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1950 rates
[i
].hw_value_short
= i
;
1952 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1954 * If CCK != 1M then set short preamble rate flag.
1956 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1957 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1962 /******************************************************************************
1964 * uCode download functions
1966 ******************************************************************************/
1968 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1970 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1971 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1972 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1973 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1974 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1975 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1979 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1980 * looking at all data.
1982 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1989 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1991 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1992 IWL39_RTC_INST_LOWER_BOUND
);
1995 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1996 /* read data comes through single port, auto-incr addr */
1997 /* NOTE: Use the debugless read so we don't flood kernel log
1998 * if IWL_DL_IO is set */
1999 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2000 if (val
!= le32_to_cpu(*image
)) {
2001 IWL_ERR(priv
, "uCode INST section is invalid at "
2002 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2003 save_len
- len
, val
, le32_to_cpu(*image
));
2013 IWL_DEBUG_INFO(priv
,
2014 "ucode image in INSTRUCTION memory is good\n");
2021 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2022 * using sample data 100 bytes apart. If these sample points are good,
2023 * it's a pretty good bet that everything between them is good, too.
2025 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2032 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2034 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2035 /* read data comes through single port, auto-incr addr */
2036 /* NOTE: Use the debugless read so we don't flood kernel log
2037 * if IWL_DL_IO is set */
2038 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2039 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2040 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2041 if (val
!= le32_to_cpu(*image
)) {
2042 #if 0 /* Enable this if you want to see details */
2043 IWL_ERR(priv
, "uCode INST section is invalid at "
2044 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2059 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2060 * and verify its contents
2062 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2069 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2070 len
= priv
->ucode_boot
.len
;
2071 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2073 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2077 /* Try initialize */
2078 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2079 len
= priv
->ucode_init
.len
;
2080 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2082 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2086 /* Try runtime/protocol */
2087 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2088 len
= priv
->ucode_code
.len
;
2089 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2091 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2095 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2097 /* Since nothing seems to match, show first several data entries in
2098 * instruction SRAM, so maybe visual inspection will give a clue.
2099 * Selection of bootstrap image (vs. other images) is arbitrary. */
2100 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2101 len
= priv
->ucode_boot
.len
;
2102 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2107 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2109 /* Remove all resets to allow NIC to operate */
2110 iwl_write32(priv
, CSR_RESET
, 0);
2113 #define IWL3945_UCODE_GET(item) \
2114 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2116 return le32_to_cpu(ucode->u.v1.item); \
2119 static u32
iwl3945_ucode_get_header_size(u32 api_ver
)
2124 static u8
*iwl3945_ucode_get_data(const struct iwl_ucode_header
*ucode
)
2126 return (u8
*) ucode
->u
.v1
.data
;
2129 IWL3945_UCODE_GET(inst_size
);
2130 IWL3945_UCODE_GET(data_size
);
2131 IWL3945_UCODE_GET(init_size
);
2132 IWL3945_UCODE_GET(init_data_size
);
2133 IWL3945_UCODE_GET(boot_size
);
2136 * iwl3945_read_ucode - Read uCode images from disk file.
2138 * Copy into buffers for card to fetch via bus-mastering
2140 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2142 const struct iwl_ucode_header
*ucode
;
2143 int ret
= -EINVAL
, index
;
2144 const struct firmware
*ucode_raw
;
2145 /* firmware file name contains uCode/driver compatibility version */
2146 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2147 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2148 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2152 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2154 /* Ask kernel firmware_class module to get the boot firmware off disk.
2155 * request_firmware() is synchronous, file is in memory on return. */
2156 for (index
= api_max
; index
>= api_min
; index
--) {
2157 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2158 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2160 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2167 if (index
< api_max
)
2168 IWL_ERR(priv
, "Loaded firmware %s, "
2169 "which is deprecated. "
2170 " Please use API v%u instead.\n",
2172 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2173 "(%zd bytes) from disk\n",
2174 buf
, ucode_raw
->size
);
2182 /* Make sure that we got at least our header! */
2183 if (ucode_raw
->size
< iwl3945_ucode_get_header_size(1)) {
2184 IWL_ERR(priv
, "File size way too small!\n");
2189 /* Data from ucode file: header followed by uCode images */
2190 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2192 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2193 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2194 inst_size
= iwl3945_ucode_get_inst_size(ucode
);
2195 data_size
= iwl3945_ucode_get_data_size(ucode
);
2196 init_size
= iwl3945_ucode_get_init_size(ucode
);
2197 init_data_size
= iwl3945_ucode_get_init_data_size(ucode
);
2198 boot_size
= iwl3945_ucode_get_boot_size(ucode
);
2199 src
= iwl3945_ucode_get_data(ucode
);
2201 /* api_ver should match the api version forming part of the
2202 * firmware filename ... but we don't check for that and only rely
2203 * on the API version read from firmware header from here on forward */
2205 if (api_ver
< api_min
|| api_ver
> api_max
) {
2206 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2207 "Driver supports v%u, firmware is v%u.\n",
2209 priv
->ucode_ver
= 0;
2213 if (api_ver
!= api_max
)
2214 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2215 "got %u. New firmware can be obtained "
2216 "from http://www.intellinuxwireless.org.\n",
2219 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2220 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2221 IWL_UCODE_MINOR(priv
->ucode_ver
),
2222 IWL_UCODE_API(priv
->ucode_ver
),
2223 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2225 snprintf(priv
->hw
->wiphy
->fw_version
,
2226 sizeof(priv
->hw
->wiphy
->fw_version
),
2228 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2229 IWL_UCODE_MINOR(priv
->ucode_ver
),
2230 IWL_UCODE_API(priv
->ucode_ver
),
2231 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2233 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2235 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2237 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2239 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2241 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2243 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2247 /* Verify size of file vs. image size info in file's header */
2248 if (ucode_raw
->size
!= iwl3945_ucode_get_header_size(api_ver
) +
2249 inst_size
+ data_size
+ init_size
+
2250 init_data_size
+ boot_size
) {
2252 IWL_DEBUG_INFO(priv
,
2253 "uCode file size %zd does not match expected size\n",
2259 /* Verify that uCode images will fit in card's SRAM */
2260 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2261 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2267 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2268 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2273 if (init_size
> IWL39_MAX_INST_SIZE
) {
2274 IWL_DEBUG_INFO(priv
,
2275 "uCode init instr len %d too large to fit in\n",
2280 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2281 IWL_DEBUG_INFO(priv
,
2282 "uCode init data len %d too large to fit in\n",
2287 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2288 IWL_DEBUG_INFO(priv
,
2289 "uCode boot instr len %d too large to fit in\n",
2295 /* Allocate ucode buffers for card's bus-master loading ... */
2297 /* Runtime instructions and 2 copies of data:
2298 * 1) unmodified from disk
2299 * 2) backup cache for save/restore during power-downs */
2300 priv
->ucode_code
.len
= inst_size
;
2301 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2303 priv
->ucode_data
.len
= data_size
;
2304 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2306 priv
->ucode_data_backup
.len
= data_size
;
2307 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2309 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2310 !priv
->ucode_data_backup
.v_addr
)
2313 /* Initialization instructions and data */
2314 if (init_size
&& init_data_size
) {
2315 priv
->ucode_init
.len
= init_size
;
2316 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2318 priv
->ucode_init_data
.len
= init_data_size
;
2319 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2321 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2325 /* Bootstrap (instructions only, no data) */
2327 priv
->ucode_boot
.len
= boot_size
;
2328 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2330 if (!priv
->ucode_boot
.v_addr
)
2334 /* Copy images into buffers for card's bus-master reads ... */
2336 /* Runtime instructions (first block of data in file) */
2338 IWL_DEBUG_INFO(priv
,
2339 "Copying (but not loading) uCode instr len %zd\n", len
);
2340 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2343 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2344 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2346 /* Runtime data (2nd block)
2347 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2349 IWL_DEBUG_INFO(priv
,
2350 "Copying (but not loading) uCode data len %zd\n", len
);
2351 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2352 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2355 /* Initialization instructions (3rd block) */
2358 IWL_DEBUG_INFO(priv
,
2359 "Copying (but not loading) init instr len %zd\n", len
);
2360 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2364 /* Initialization data (4th block) */
2365 if (init_data_size
) {
2366 len
= init_data_size
;
2367 IWL_DEBUG_INFO(priv
,
2368 "Copying (but not loading) init data len %zd\n", len
);
2369 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2373 /* Bootstrap instructions (5th block) */
2375 IWL_DEBUG_INFO(priv
,
2376 "Copying (but not loading) boot instr len %zd\n", len
);
2377 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2379 /* We have our copies now, allow OS release its copies */
2380 release_firmware(ucode_raw
);
2384 IWL_ERR(priv
, "failed to allocate pci memory\n");
2386 iwl3945_dealloc_ucode_pci(priv
);
2389 release_firmware(ucode_raw
);
2397 * iwl3945_set_ucode_ptrs - Set uCode address location
2399 * Tell initialization uCode where to find runtime uCode.
2401 * BSM registers initially contain pointers to initialization uCode.
2402 * We need to replace them to load runtime uCode inst and data,
2403 * and to save runtime data when powering down.
2405 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2410 /* bits 31:0 for 3945 */
2411 pinst
= priv
->ucode_code
.p_addr
;
2412 pdata
= priv
->ucode_data_backup
.p_addr
;
2414 /* Tell bootstrap uCode where to find image to load */
2415 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2416 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2417 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2418 priv
->ucode_data
.len
);
2420 /* Inst byte count must be last to set up, bit 31 signals uCode
2421 * that all new ptr/size info is in place */
2422 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2423 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2425 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2431 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2433 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2435 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2437 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2439 /* Check alive response for "valid" sign from uCode */
2440 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2441 /* We had an error bringing up the hardware, so take it
2442 * all the way back down so we can try again */
2443 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2447 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2448 * This is a paranoid check, because we would not have gotten the
2449 * "initialize" alive if code weren't properly loaded. */
2450 if (iwl3945_verify_ucode(priv
)) {
2451 /* Runtime instruction load was bad;
2452 * take it all the way back down so we can try again */
2453 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2457 /* Send pointers to protocol/runtime uCode image ... init code will
2458 * load and launch runtime uCode, which will send us another "Alive"
2460 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2461 if (iwl3945_set_ucode_ptrs(priv
)) {
2462 /* Runtime instruction load won't happen;
2463 * take it all the way back down so we can try again */
2464 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2470 queue_work(priv
->workqueue
, &priv
->restart
);
2474 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2475 * from protocol/runtime uCode (initialization uCode's
2476 * Alive gets handled by iwl3945_init_alive_start()).
2478 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2480 int thermal_spin
= 0;
2483 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2485 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2486 /* We had an error bringing up the hardware, so take it
2487 * all the way back down so we can try again */
2488 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2492 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2493 * This is a paranoid check, because we would not have gotten the
2494 * "runtime" alive if code weren't properly loaded. */
2495 if (iwl3945_verify_ucode(priv
)) {
2496 /* Runtime instruction load was bad;
2497 * take it all the way back down so we can try again */
2498 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2502 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2503 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2506 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2507 /* if RFKILL is not on, then wait for thermal
2508 * sensor in adapter to kick in */
2509 while (iwl3945_hw_get_temperature(priv
) == 0) {
2515 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2518 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2520 /* After the ALIVE response, we can send commands to 3945 uCode */
2521 set_bit(STATUS_ALIVE
, &priv
->status
);
2523 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
2524 /* Enable timer to monitor the driver queues */
2525 mod_timer(&priv
->monitor_recover
,
2527 msecs_to_jiffies(priv
->cfg
->monitor_recover_period
));
2530 if (iwl_is_rfkill(priv
))
2533 ieee80211_wake_queues(priv
->hw
);
2535 priv
->active_rate
= IWL_RATES_MASK
;
2537 iwl_power_update_mode(priv
, true);
2539 if (iwl_is_associated(priv
)) {
2540 struct iwl3945_rxon_cmd
*active_rxon
=
2541 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2543 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2544 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2546 /* Initialize our rx_config data */
2547 iwl_connection_init_rx_config(priv
, NULL
);
2550 /* Configure Bluetooth device coexistence support */
2551 priv
->cfg
->ops
->hcmd
->send_bt_config(priv
);
2553 /* Configure the adapter for unassociated operation */
2554 iwlcore_commit_rxon(priv
);
2556 iwl3945_reg_txpower_periodic(priv
);
2558 iwl_leds_init(priv
);
2560 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2561 set_bit(STATUS_READY
, &priv
->status
);
2562 wake_up_interruptible(&priv
->wait_command_queue
);
2567 queue_work(priv
->workqueue
, &priv
->restart
);
2570 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2572 static void __iwl3945_down(struct iwl_priv
*priv
)
2574 unsigned long flags
;
2575 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2576 struct ieee80211_conf
*conf
= NULL
;
2578 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2580 conf
= ieee80211_get_hw_conf(priv
->hw
);
2583 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2585 /* Station information will now be cleared in device */
2586 iwl_clear_ucode_stations(priv
);
2587 iwl_dealloc_bcast_station(priv
);
2589 /* Unblock any waiting calls */
2590 wake_up_interruptible_all(&priv
->wait_command_queue
);
2592 /* Wipe out the EXIT_PENDING status bit if we are not actually
2593 * exiting the module */
2595 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2597 /* stop and reset the on-board processor */
2598 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2600 /* tell the device to stop sending interrupts */
2601 spin_lock_irqsave(&priv
->lock
, flags
);
2602 iwl_disable_interrupts(priv
);
2603 spin_unlock_irqrestore(&priv
->lock
, flags
);
2604 iwl_synchronize_irq(priv
);
2606 if (priv
->mac80211_registered
)
2607 ieee80211_stop_queues(priv
->hw
);
2609 /* If we have not previously called iwl3945_init() then
2610 * clear all bits but the RF Kill bits and return */
2611 if (!iwl_is_init(priv
)) {
2612 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2614 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2615 STATUS_GEO_CONFIGURED
|
2616 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2617 STATUS_EXIT_PENDING
;
2621 /* ...otherwise clear out all the status bits but the RF Kill
2622 * bit and continue taking the NIC down. */
2623 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2625 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2626 STATUS_GEO_CONFIGURED
|
2627 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2629 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2630 STATUS_EXIT_PENDING
;
2632 iwl3945_hw_txq_ctx_stop(priv
);
2633 iwl3945_hw_rxq_stop(priv
);
2635 /* Power-down device's busmaster DMA clocks */
2636 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2639 /* Stop the device, and put it in low power state */
2640 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2643 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2645 if (priv
->ibss_beacon
)
2646 dev_kfree_skb(priv
->ibss_beacon
);
2647 priv
->ibss_beacon
= NULL
;
2649 /* clear out any free frames */
2650 iwl3945_clear_free_frames(priv
);
2653 static void iwl3945_down(struct iwl_priv
*priv
)
2655 mutex_lock(&priv
->mutex
);
2656 __iwl3945_down(priv
);
2657 mutex_unlock(&priv
->mutex
);
2659 iwl3945_cancel_deferred_work(priv
);
2662 #define MAX_HW_RESTARTS 5
2664 static int __iwl3945_up(struct iwl_priv
*priv
)
2668 rc
= iwl_alloc_bcast_station(priv
, false);
2672 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2673 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2677 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2678 IWL_ERR(priv
, "ucode not available for device bring up\n");
2682 /* If platform's RF_KILL switch is NOT set to KILL */
2683 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2684 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2685 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2687 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2688 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2692 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2694 rc
= iwl3945_hw_nic_init(priv
);
2696 IWL_ERR(priv
, "Unable to int nic\n");
2700 /* make sure rfkill handshake bits are cleared */
2701 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2702 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2703 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2705 /* clear (again), then enable host interrupts */
2706 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2707 iwl_enable_interrupts(priv
);
2709 /* really make sure rfkill handshake bits are cleared */
2710 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2711 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2713 /* Copy original ucode data image from disk into backup cache.
2714 * This will be used to initialize the on-board processor's
2715 * data SRAM for a clean start when the runtime program first loads. */
2716 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2717 priv
->ucode_data
.len
);
2719 /* We return success when we resume from suspend and rf_kill is on. */
2720 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2723 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2725 /* load bootstrap state machine,
2726 * load bootstrap program into processor's memory,
2727 * prepare to load the "initialize" uCode */
2728 rc
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
2732 "Unable to set up bootstrap uCode: %d\n", rc
);
2736 /* start card; "initialize" will load runtime ucode */
2737 iwl3945_nic_start(priv
);
2739 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2744 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2745 __iwl3945_down(priv
);
2746 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2748 /* tried to restart and config the device for as long as our
2749 * patience could withstand */
2750 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2755 /*****************************************************************************
2757 * Workqueue callbacks
2759 *****************************************************************************/
2761 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2763 struct iwl_priv
*priv
=
2764 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2766 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2769 mutex_lock(&priv
->mutex
);
2770 iwl3945_init_alive_start(priv
);
2771 mutex_unlock(&priv
->mutex
);
2774 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2776 struct iwl_priv
*priv
=
2777 container_of(data
, struct iwl_priv
, alive_start
.work
);
2779 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2782 mutex_lock(&priv
->mutex
);
2783 iwl3945_alive_start(priv
);
2784 mutex_unlock(&priv
->mutex
);
2788 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2789 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2790 * *is* readable even when device has been SW_RESET into low power mode
2791 * (e.g. during RF KILL).
2793 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2795 struct iwl_priv
*priv
=
2796 container_of(data
, struct iwl_priv
, _3945
.rfkill_poll
.work
);
2797 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2798 bool new_rfkill
= !(iwl_read32(priv
, CSR_GP_CNTRL
)
2799 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2801 if (new_rfkill
!= old_rfkill
) {
2803 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2805 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2807 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, new_rfkill
);
2809 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
2810 new_rfkill
? "disable radio" : "enable radio");
2813 /* Keep this running, even if radio now enabled. This will be
2814 * cancelled in mac_start() if system decides to start again */
2815 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
2816 round_jiffies_relative(2 * HZ
));
2820 void iwl3945_request_scan(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
2822 struct iwl_host_cmd cmd
= {
2823 .id
= REPLY_SCAN_CMD
,
2824 .len
= sizeof(struct iwl3945_scan_cmd
),
2825 .flags
= CMD_SIZE_HUGE
,
2827 struct iwl3945_scan_cmd
*scan
;
2828 struct ieee80211_conf
*conf
= NULL
;
2830 enum ieee80211_band band
;
2831 bool is_active
= false;
2833 conf
= ieee80211_get_hw_conf(priv
->hw
);
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");
2855 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2856 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2860 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2862 "Scan request while abort pending. Queuing.\n");
2866 if (iwl_is_rfkill(priv
)) {
2867 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2871 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2873 "Scan request while uninitialized. Queuing.\n");
2877 if (!priv
->scan_cmd
) {
2878 priv
->scan_cmd
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2879 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2880 if (!priv
->scan_cmd
) {
2881 IWL_DEBUG_SCAN(priv
, "Fail to allocate scan memory\n");
2885 scan
= priv
->scan_cmd
;
2886 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2888 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2889 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2891 if (iwl_is_associated(priv
)) {
2894 u32 suspend_time
= 100;
2895 u32 scan_suspend_time
= 100;
2896 unsigned long flags
;
2898 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2900 spin_lock_irqsave(&priv
->lock
, flags
);
2901 interval
= vif
? vif
->bss_conf
.beacon_int
: 0;
2902 spin_unlock_irqrestore(&priv
->lock
, flags
);
2904 scan
->suspend_time
= 0;
2905 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2907 interval
= suspend_time
;
2909 * suspend time format:
2910 * 0-19: beacon interval in usec (time before exec.)
2912 * 24-31: number of beacons (suspend between channels)
2915 extra
= (suspend_time
/ interval
) << 24;
2916 scan_suspend_time
= 0xFF0FFFFF &
2917 (extra
| ((suspend_time
% interval
) * 1024));
2919 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2920 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2921 scan_suspend_time
, interval
);
2924 if (priv
->is_internal_short_scan
) {
2925 IWL_DEBUG_SCAN(priv
, "Start internal passive scan.\n");
2926 } else if (priv
->scan_request
->n_ssids
) {
2928 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2929 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2930 /* always does wildcard anyway */
2931 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2933 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2934 scan
->direct_scan
[p
].len
=
2935 priv
->scan_request
->ssids
[i
].ssid_len
;
2936 memcpy(scan
->direct_scan
[p
].ssid
,
2937 priv
->scan_request
->ssids
[i
].ssid
,
2938 priv
->scan_request
->ssids
[i
].ssid_len
);
2944 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2946 /* We don't build a direct scan probe request; the uCode will do
2947 * that based on the direct_mask added to each channel entry */
2948 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2949 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2950 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2952 /* flags + rate selection */
2954 switch (priv
->scan_band
) {
2955 case IEEE80211_BAND_2GHZ
:
2956 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2957 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2958 scan
->good_CRC_th
= 0;
2959 band
= IEEE80211_BAND_2GHZ
;
2961 case IEEE80211_BAND_5GHZ
:
2962 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2964 * If active scaning is requested but a certain channel
2965 * is marked passive, we can do active scanning if we
2966 * detect transmissions.
2968 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH_DEFAULT
:
2969 IWL_GOOD_CRC_TH_DISABLED
;
2970 band
= IEEE80211_BAND_5GHZ
;
2973 IWL_WARN(priv
, "Invalid scan band\n");
2977 if (!priv
->is_internal_short_scan
) {
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 scan
->tx_cmd
.len
= cpu_to_le16(
2986 iwl_fill_probe_req(priv
,
2987 (struct ieee80211_mgmt
*)scan
->data
,
2989 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2991 /* select Rx antennas */
2992 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2994 scan
->channel_count
=
2995 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2996 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)], vif
);
2998 if (scan
->channel_count
== 0) {
2999 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
3003 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
3004 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
3006 scan
->len
= cpu_to_le16(cmd
.len
);
3008 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3009 if (iwl_send_cmd_sync(priv
, &cmd
))
3012 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
3013 IWL_SCAN_CHECK_WATCHDOG
);
3018 /* can not perform scan make sure we clear scanning
3019 * bits from status so next scan request can be performed.
3020 * if we dont clear scanning status bit here all next scan
3023 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3024 clear_bit(STATUS_SCANNING
, &priv
->status
);
3026 /* inform mac80211 scan aborted */
3027 queue_work(priv
->workqueue
, &priv
->scan_completed
);
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 void iwl3945_post_associate(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
3072 struct ieee80211_conf
*conf
= NULL
;
3074 if (!vif
|| !priv
->is_open
)
3077 if (vif
->type
== NL80211_IFTYPE_AP
) {
3078 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 vif
->bss_conf
.aid
, priv
->active_rxon
.bssid_addr
);
3085 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3088 iwl_scan_cancel_timeout(priv
, 200);
3090 conf
= ieee80211_get_hw_conf(priv
->hw
);
3092 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3093 iwlcore_commit_rxon(priv
);
3095 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3096 iwl_setup_rxon_timing(priv
, vif
);
3097 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3098 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3100 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3101 "Attempting to continue.\n");
3103 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3105 priv
->staging_rxon
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
3107 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3108 vif
->bss_conf
.aid
, vif
->bss_conf
.beacon_int
);
3110 if (vif
->bss_conf
.assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3111 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3113 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3115 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3116 if (vif
->bss_conf
.assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3117 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3119 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3121 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
3122 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3125 iwlcore_commit_rxon(priv
);
3127 switch (vif
->type
) {
3128 case NL80211_IFTYPE_STATION
:
3129 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3131 case NL80211_IFTYPE_ADHOC
:
3132 iwl3945_send_beacon_cmd(priv
);
3135 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3136 __func__
, vif
->type
);
3141 /*****************************************************************************
3143 * mac80211 entry point functions
3145 *****************************************************************************/
3147 #define UCODE_READY_TIMEOUT (2 * HZ)
3149 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3151 struct iwl_priv
*priv
= hw
->priv
;
3154 IWL_DEBUG_MAC80211(priv
, "enter\n");
3156 /* we should be verifying the device is ready to be opened */
3157 mutex_lock(&priv
->mutex
);
3159 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3160 * ucode filename and max sizes are card-specific. */
3162 if (!priv
->ucode_code
.len
) {
3163 ret
= iwl3945_read_ucode(priv
);
3165 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3166 mutex_unlock(&priv
->mutex
);
3167 goto out_release_irq
;
3171 ret
= __iwl3945_up(priv
);
3173 mutex_unlock(&priv
->mutex
);
3176 goto out_release_irq
;
3178 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3180 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3181 * mac80211 will not be run successfully. */
3182 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3183 test_bit(STATUS_READY
, &priv
->status
),
3184 UCODE_READY_TIMEOUT
);
3186 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3188 "Wait for START_ALIVE timeout after %dms.\n",
3189 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3191 goto out_release_irq
;
3195 /* ucode is running and will send rfkill notifications,
3196 * no need to poll the killswitch state anymore */
3197 cancel_delayed_work(&priv
->_3945
.rfkill_poll
);
3199 iwl_led_start(priv
);
3202 IWL_DEBUG_MAC80211(priv
, "leave\n");
3207 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3211 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3213 struct iwl_priv
*priv
= hw
->priv
;
3215 IWL_DEBUG_MAC80211(priv
, "enter\n");
3217 if (!priv
->is_open
) {
3218 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3224 if (iwl_is_ready_rf(priv
)) {
3225 /* stop mac, cancel any scan request and clear
3226 * RXON_FILTER_ASSOC_MSK BIT
3228 mutex_lock(&priv
->mutex
);
3229 iwl_scan_cancel_timeout(priv
, 100);
3230 mutex_unlock(&priv
->mutex
);
3235 flush_workqueue(priv
->workqueue
);
3237 /* start polling the killswitch state again */
3238 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
3239 round_jiffies_relative(2 * HZ
));
3241 IWL_DEBUG_MAC80211(priv
, "leave\n");
3244 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3246 struct iwl_priv
*priv
= hw
->priv
;
3248 IWL_DEBUG_MAC80211(priv
, "enter\n");
3250 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3251 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3253 if (iwl3945_tx_skb(priv
, skb
))
3254 dev_kfree_skb_any(skb
);
3256 IWL_DEBUG_MAC80211(priv
, "leave\n");
3257 return NETDEV_TX_OK
;
3260 void iwl3945_config_ap(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
3264 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3267 /* The following should be done only at AP bring up */
3268 if (!(iwl_is_associated(priv
))) {
3270 /* RXON - unassoc (to set timing command) */
3271 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3272 iwlcore_commit_rxon(priv
);
3275 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3276 iwl_setup_rxon_timing(priv
, vif
);
3277 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3278 sizeof(priv
->rxon_timing
),
3279 &priv
->rxon_timing
);
3281 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3282 "Attempting to continue.\n");
3284 priv
->staging_rxon
.assoc_id
= 0;
3286 if (vif
->bss_conf
.assoc_capability
&
3287 WLAN_CAPABILITY_SHORT_PREAMBLE
)
3288 priv
->staging_rxon
.flags
|=
3289 RXON_FLG_SHORT_PREAMBLE_MSK
;
3291 priv
->staging_rxon
.flags
&=
3292 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3294 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3295 if (vif
->bss_conf
.assoc_capability
&
3296 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3297 priv
->staging_rxon
.flags
|=
3298 RXON_FLG_SHORT_SLOT_MSK
;
3300 priv
->staging_rxon
.flags
&=
3301 ~RXON_FLG_SHORT_SLOT_MSK
;
3303 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
3304 priv
->staging_rxon
.flags
&=
3305 ~RXON_FLG_SHORT_SLOT_MSK
;
3307 /* restore RXON assoc */
3308 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3309 iwlcore_commit_rxon(priv
);
3311 iwl3945_send_beacon_cmd(priv
);
3313 /* FIXME - we need to add code here to detect a totally new
3314 * configuration, reset the AP, unassoc, rxon timing, assoc,
3315 * clear sta table, add BCAST sta... */
3318 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3319 struct ieee80211_vif
*vif
,
3320 struct ieee80211_sta
*sta
,
3321 struct ieee80211_key_conf
*key
)
3323 struct iwl_priv
*priv
= hw
->priv
;
3325 u8 sta_id
= IWL_INVALID_STATION
;
3328 IWL_DEBUG_MAC80211(priv
, "enter\n");
3330 if (iwl3945_mod_params
.sw_crypto
) {
3331 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3335 static_key
= !iwl_is_associated(priv
);
3339 sta_id
= priv
->hw_params
.bcast_sta_id
;
3341 sta_id
= iwl_sta_id(sta
);
3342 if (sta_id
== IWL_INVALID_STATION
) {
3343 IWL_DEBUG_MAC80211(priv
,
3344 "leave - %pM not in station map.\n",
3351 mutex_lock(&priv
->mutex
);
3352 iwl_scan_cancel_timeout(priv
, 100);
3357 ret
= iwl3945_set_static_key(priv
, key
);
3359 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3360 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3364 ret
= iwl3945_remove_static_key(priv
);
3366 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3367 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3373 mutex_unlock(&priv
->mutex
);
3374 IWL_DEBUG_MAC80211(priv
, "leave\n");
3379 static int iwl3945_mac_sta_add(struct ieee80211_hw
*hw
,
3380 struct ieee80211_vif
*vif
,
3381 struct ieee80211_sta
*sta
)
3383 struct iwl_priv
*priv
= hw
->priv
;
3384 struct iwl3945_sta_priv
*sta_priv
= (void *)sta
->drv_priv
;
3386 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
3389 sta_priv
->common
.sta_id
= IWL_INVALID_STATION
;
3391 IWL_DEBUG_INFO(priv
, "received request to add station %pM\n",
3394 ret
= iwl_add_station_common(priv
, sta
->addr
, is_ap
, &sta
->ht_cap
,
3397 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
3399 /* Should we return success if return code is EEXIST ? */
3403 sta_priv
->common
.sta_id
= sta_id
;
3405 /* Initialize rate scaling */
3406 IWL_DEBUG_INFO(priv
, "Initializing rate scaling for station %pM\n",
3408 iwl3945_rs_rate_init(priv
, sta
, sta_id
);
3412 /*****************************************************************************
3416 *****************************************************************************/
3418 #ifdef CONFIG_IWLWIFI_DEBUG
3421 * The following adds a new attribute to the sysfs representation
3422 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3423 * used for controlling the debug level.
3425 * See the level definitions in iwl for details.
3427 * The debug_level being managed using sysfs below is a per device debug
3428 * level that is used instead of the global debug level if it (the per
3429 * device debug level) is set.
3431 static ssize_t
show_debug_level(struct device
*d
,
3432 struct device_attribute
*attr
, char *buf
)
3434 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3435 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3437 static ssize_t
store_debug_level(struct device
*d
,
3438 struct device_attribute
*attr
,
3439 const char *buf
, size_t count
)
3441 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3445 ret
= strict_strtoul(buf
, 0, &val
);
3447 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3449 priv
->debug_level
= val
;
3450 if (iwl_alloc_traffic_mem(priv
))
3452 "Not enough memory to generate traffic log\n");
3454 return strnlen(buf
, count
);
3457 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3458 show_debug_level
, store_debug_level
);
3460 #endif /* CONFIG_IWLWIFI_DEBUG */
3462 static ssize_t
show_temperature(struct device
*d
,
3463 struct device_attribute
*attr
, char *buf
)
3465 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3467 if (!iwl_is_alive(priv
))
3470 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3473 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3475 static ssize_t
show_tx_power(struct device
*d
,
3476 struct device_attribute
*attr
, char *buf
)
3478 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3479 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3482 static ssize_t
store_tx_power(struct device
*d
,
3483 struct device_attribute
*attr
,
3484 const char *buf
, size_t count
)
3486 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3487 char *p
= (char *)buf
;
3490 val
= simple_strtoul(p
, &p
, 10);
3492 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3494 iwl3945_hw_reg_set_txpower(priv
, val
);
3499 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3501 static ssize_t
show_flags(struct device
*d
,
3502 struct device_attribute
*attr
, char *buf
)
3504 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3506 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3509 static ssize_t
store_flags(struct device
*d
,
3510 struct device_attribute
*attr
,
3511 const char *buf
, size_t count
)
3513 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3514 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3516 mutex_lock(&priv
->mutex
);
3517 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3518 /* Cancel any currently running scans... */
3519 if (iwl_scan_cancel_timeout(priv
, 100))
3520 IWL_WARN(priv
, "Could not cancel scan.\n");
3522 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3524 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3525 iwlcore_commit_rxon(priv
);
3528 mutex_unlock(&priv
->mutex
);
3533 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3535 static ssize_t
show_filter_flags(struct device
*d
,
3536 struct device_attribute
*attr
, char *buf
)
3538 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3540 return sprintf(buf
, "0x%04X\n",
3541 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3544 static ssize_t
store_filter_flags(struct device
*d
,
3545 struct device_attribute
*attr
,
3546 const char *buf
, size_t count
)
3548 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3549 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3551 mutex_lock(&priv
->mutex
);
3552 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3553 /* Cancel any currently running scans... */
3554 if (iwl_scan_cancel_timeout(priv
, 100))
3555 IWL_WARN(priv
, "Could not cancel scan.\n");
3557 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3558 "0x%04X\n", filter_flags
);
3559 priv
->staging_rxon
.filter_flags
=
3560 cpu_to_le32(filter_flags
);
3561 iwlcore_commit_rxon(priv
);
3564 mutex_unlock(&priv
->mutex
);
3569 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3570 store_filter_flags
);
3572 static ssize_t
show_measurement(struct device
*d
,
3573 struct device_attribute
*attr
, char *buf
)
3575 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3576 struct iwl_spectrum_notification measure_report
;
3577 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3578 u8
*data
= (u8
*)&measure_report
;
3579 unsigned long flags
;
3581 spin_lock_irqsave(&priv
->lock
, flags
);
3582 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3583 spin_unlock_irqrestore(&priv
->lock
, flags
);
3586 memcpy(&measure_report
, &priv
->measure_report
, size
);
3587 priv
->measurement_status
= 0;
3588 spin_unlock_irqrestore(&priv
->lock
, flags
);
3590 while (size
&& (PAGE_SIZE
- len
)) {
3591 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3592 PAGE_SIZE
- len
, 1);
3594 if (PAGE_SIZE
- len
)
3598 size
-= min(size
, 16U);
3604 static ssize_t
store_measurement(struct device
*d
,
3605 struct device_attribute
*attr
,
3606 const char *buf
, size_t count
)
3608 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3609 struct ieee80211_measurement_params params
= {
3610 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3611 .start_time
= cpu_to_le64(priv
->_3945
.last_tsf
),
3612 .duration
= cpu_to_le16(1),
3614 u8 type
= IWL_MEASURE_BASIC
;
3620 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3621 channel
= simple_strtoul(p
, NULL
, 0);
3623 params
.channel
= channel
;
3626 while (*p
&& *p
!= ' ')
3629 type
= simple_strtoul(p
+ 1, NULL
, 0);
3632 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3633 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3634 iwl3945_get_measurement(priv
, ¶ms
, type
);
3639 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3640 show_measurement
, store_measurement
);
3642 static ssize_t
store_retry_rate(struct device
*d
,
3643 struct device_attribute
*attr
,
3644 const char *buf
, size_t count
)
3646 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3648 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3649 if (priv
->retry_rate
<= 0)
3650 priv
->retry_rate
= 1;
3655 static ssize_t
show_retry_rate(struct device
*d
,
3656 struct device_attribute
*attr
, char *buf
)
3658 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3659 return sprintf(buf
, "%d", priv
->retry_rate
);
3662 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3666 static ssize_t
show_channels(struct device
*d
,
3667 struct device_attribute
*attr
, char *buf
)
3669 /* all this shit doesn't belong into sysfs anyway */
3673 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3675 static ssize_t
show_antenna(struct device
*d
,
3676 struct device_attribute
*attr
, char *buf
)
3678 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3680 if (!iwl_is_alive(priv
))
3683 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3686 static ssize_t
store_antenna(struct device
*d
,
3687 struct device_attribute
*attr
,
3688 const char *buf
, size_t count
)
3690 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3696 if (sscanf(buf
, "%1i", &ant
) != 1) {
3697 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3701 if ((ant
>= 0) && (ant
<= 2)) {
3702 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3703 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3705 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3711 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3713 static ssize_t
show_status(struct device
*d
,
3714 struct device_attribute
*attr
, char *buf
)
3716 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3717 if (!iwl_is_alive(priv
))
3719 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3722 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3724 static ssize_t
dump_error_log(struct device
*d
,
3725 struct device_attribute
*attr
,
3726 const char *buf
, size_t count
)
3728 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3729 char *p
= (char *)buf
;
3732 iwl3945_dump_nic_error_log(priv
);
3734 return strnlen(buf
, count
);
3737 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3739 /*****************************************************************************
3741 * driver setup and tear down
3743 *****************************************************************************/
3745 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3747 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3749 init_waitqueue_head(&priv
->wait_command_queue
);
3751 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3752 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3753 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3754 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3755 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3756 INIT_DELAYED_WORK(&priv
->_3945
.rfkill_poll
, iwl3945_rfkill_poll
);
3757 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3758 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3759 INIT_WORK(&priv
->start_internal_scan
, iwl_bg_start_internal_scan
);
3760 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3762 iwl3945_hw_setup_deferred_work(priv
);
3764 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
3765 init_timer(&priv
->monitor_recover
);
3766 priv
->monitor_recover
.data
= (unsigned long)priv
;
3767 priv
->monitor_recover
.function
=
3768 priv
->cfg
->ops
->lib
->recover_from_tx_stall
;
3771 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3772 iwl3945_irq_tasklet
, (unsigned long)priv
);
3775 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3777 iwl3945_hw_cancel_deferred_work(priv
);
3779 cancel_delayed_work_sync(&priv
->init_alive_start
);
3780 cancel_delayed_work(&priv
->scan_check
);
3781 cancel_delayed_work(&priv
->alive_start
);
3782 cancel_work_sync(&priv
->start_internal_scan
);
3783 cancel_work_sync(&priv
->beacon_update
);
3784 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
)
3785 del_timer_sync(&priv
->monitor_recover
);
3788 static struct attribute
*iwl3945_sysfs_entries
[] = {
3789 &dev_attr_antenna
.attr
,
3790 &dev_attr_channels
.attr
,
3791 &dev_attr_dump_errors
.attr
,
3792 &dev_attr_flags
.attr
,
3793 &dev_attr_filter_flags
.attr
,
3794 &dev_attr_measurement
.attr
,
3795 &dev_attr_retry_rate
.attr
,
3796 &dev_attr_status
.attr
,
3797 &dev_attr_temperature
.attr
,
3798 &dev_attr_tx_power
.attr
,
3799 #ifdef CONFIG_IWLWIFI_DEBUG
3800 &dev_attr_debug_level
.attr
,
3805 static struct attribute_group iwl3945_attribute_group
= {
3806 .name
= NULL
, /* put in device directory */
3807 .attrs
= iwl3945_sysfs_entries
,
3810 static struct ieee80211_ops iwl3945_hw_ops
= {
3811 .tx
= iwl3945_mac_tx
,
3812 .start
= iwl3945_mac_start
,
3813 .stop
= iwl3945_mac_stop
,
3814 .add_interface
= iwl_mac_add_interface
,
3815 .remove_interface
= iwl_mac_remove_interface
,
3816 .config
= iwl_mac_config
,
3817 .configure_filter
= iwl_configure_filter
,
3818 .set_key
= iwl3945_mac_set_key
,
3819 .conf_tx
= iwl_mac_conf_tx
,
3820 .reset_tsf
= iwl_mac_reset_tsf
,
3821 .bss_info_changed
= iwl_bss_info_changed
,
3822 .hw_scan
= iwl_mac_hw_scan
,
3823 .sta_add
= iwl3945_mac_sta_add
,
3824 .sta_remove
= iwl_mac_sta_remove
,
3827 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3830 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3832 priv
->retry_rate
= 1;
3833 priv
->ibss_beacon
= NULL
;
3835 spin_lock_init(&priv
->sta_lock
);
3836 spin_lock_init(&priv
->hcmd_lock
);
3838 INIT_LIST_HEAD(&priv
->free_frames
);
3840 mutex_init(&priv
->mutex
);
3841 mutex_init(&priv
->sync_cmd_mutex
);
3843 priv
->ieee_channels
= NULL
;
3844 priv
->ieee_rates
= NULL
;
3845 priv
->band
= IEEE80211_BAND_2GHZ
;
3847 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3848 priv
->missed_beacon_threshold
= IWL_MISSED_BEACON_THRESHOLD_DEF
;
3850 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3852 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3853 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3858 ret
= iwl_init_channel_map(priv
);
3860 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3864 /* Set up txpower settings in driver for all channels */
3865 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3867 goto err_free_channel_map
;
3870 ret
= iwlcore_init_geos(priv
);
3872 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3873 goto err_free_channel_map
;
3875 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3879 err_free_channel_map
:
3880 iwl_free_channel_map(priv
);
3885 #define IWL3945_MAX_PROBE_REQUEST 200
3887 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3890 struct ieee80211_hw
*hw
= priv
->hw
;
3892 hw
->rate_control_algorithm
= "iwl-3945-rs";
3893 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3894 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
3896 /* Tell mac80211 our characteristics */
3897 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3898 IEEE80211_HW_SPECTRUM_MGMT
;
3900 if (!priv
->cfg
->broken_powersave
)
3901 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
3902 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3904 hw
->wiphy
->interface_modes
=
3905 BIT(NL80211_IFTYPE_STATION
) |
3906 BIT(NL80211_IFTYPE_ADHOC
);
3908 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
3909 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
3911 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3912 /* we create the 802.11 header and a zero-length SSID element */
3913 hw
->wiphy
->max_scan_ie_len
= IWL3945_MAX_PROBE_REQUEST
- 24 - 2;
3915 /* Default value; 4 EDCA QOS priorities */
3918 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3919 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3920 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3922 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3923 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3924 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3926 ret
= ieee80211_register_hw(priv
->hw
);
3928 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3931 priv
->mac80211_registered
= 1;
3936 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3939 struct iwl_priv
*priv
;
3940 struct ieee80211_hw
*hw
;
3941 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3942 struct iwl3945_eeprom
*eeprom
;
3943 unsigned long flags
;
3945 /***********************
3946 * 1. Allocating HW data
3947 * ********************/
3949 /* mac80211 allocates memory for this device instance, including
3950 * space for this driver's private structure */
3951 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
3953 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
3958 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3961 * Disabling hardware scan means that mac80211 will perform scans
3962 * "the hard way", rather than using device's scan.
3964 if (iwl3945_mod_params
.disable_hw_scan
) {
3965 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
3966 iwl3945_hw_ops
.hw_scan
= NULL
;
3970 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3972 priv
->pci_dev
= pdev
;
3973 priv
->inta_mask
= CSR_INI_SET_MASK
;
3975 #ifdef CONFIG_IWLWIFI_DEBUG
3976 atomic_set(&priv
->restrict_refcnt
, 0);
3978 if (iwl_alloc_traffic_mem(priv
))
3979 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3981 /***************************
3982 * 2. Initializing PCI bus
3983 * *************************/
3984 if (pci_enable_device(pdev
)) {
3986 goto out_ieee80211_free_hw
;
3989 pci_set_master(pdev
);
3991 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3993 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3995 IWL_WARN(priv
, "No suitable DMA available.\n");
3996 goto out_pci_disable_device
;
3999 pci_set_drvdata(pdev
, priv
);
4000 err
= pci_request_regions(pdev
, DRV_NAME
);
4002 goto out_pci_disable_device
;
4004 /***********************
4005 * 3. Read REV Register
4006 * ********************/
4007 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4008 if (!priv
->hw_base
) {
4010 goto out_pci_release_regions
;
4013 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4014 (unsigned long long) pci_resource_len(pdev
, 0));
4015 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4017 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4018 * PCI Tx retries from interfering with C3 CPU state */
4019 pci_write_config_byte(pdev
, 0x41, 0x00);
4021 /* these spin locks will be used in apm_ops.init and EEPROM access
4022 * we should init now
4024 spin_lock_init(&priv
->reg_lock
);
4025 spin_lock_init(&priv
->lock
);
4028 * stop and reset the on-board processor just in case it is in a
4029 * strange state ... like being left stranded by a primary kernel
4030 * and this is now the kdump kernel trying to start up
4032 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
4034 /***********************
4036 * ********************/
4038 /* Read the EEPROM */
4039 err
= iwl_eeprom_init(priv
);
4041 IWL_ERR(priv
, "Unable to init EEPROM\n");
4044 /* MAC Address location in EEPROM same for 3945/4965 */
4045 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4046 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4047 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4048 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4050 /***********************
4051 * 5. Setup HW Constants
4052 * ********************/
4053 /* Device-specific setup */
4054 if (iwl3945_hw_set_hw_params(priv
)) {
4055 IWL_ERR(priv
, "failed to set hw settings\n");
4056 goto out_eeprom_free
;
4059 /***********************
4061 * ********************/
4063 err
= iwl3945_init_drv(priv
);
4065 IWL_ERR(priv
, "initializing driver failed\n");
4066 goto out_unset_hw_params
;
4069 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4072 /***********************
4074 * ********************/
4076 spin_lock_irqsave(&priv
->lock
, flags
);
4077 iwl_disable_interrupts(priv
);
4078 spin_unlock_irqrestore(&priv
->lock
, flags
);
4080 pci_enable_msi(priv
->pci_dev
);
4082 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4083 IRQF_SHARED
, DRV_NAME
, priv
);
4085 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4086 goto out_disable_msi
;
4089 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4091 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4092 goto out_release_irq
;
4095 iwl_set_rxon_channel(priv
,
4096 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4097 iwl3945_setup_deferred_work(priv
);
4098 iwl3945_setup_rx_handlers(priv
);
4099 iwl_power_initialize(priv
);
4101 /*********************************
4102 * 8. Setup and Register mac80211
4103 * *******************************/
4105 iwl_enable_interrupts(priv
);
4107 err
= iwl3945_setup_mac(priv
);
4109 goto out_remove_sysfs
;
4111 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4113 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4115 /* Start monitoring the killswitch */
4116 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
4122 destroy_workqueue(priv
->workqueue
);
4123 priv
->workqueue
= NULL
;
4124 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4126 free_irq(priv
->pci_dev
->irq
, priv
);
4128 pci_disable_msi(priv
->pci_dev
);
4129 iwlcore_free_geos(priv
);
4130 iwl_free_channel_map(priv
);
4131 out_unset_hw_params
:
4132 iwl3945_unset_hw_params(priv
);
4134 iwl_eeprom_free(priv
);
4136 pci_iounmap(pdev
, priv
->hw_base
);
4137 out_pci_release_regions
:
4138 pci_release_regions(pdev
);
4139 out_pci_disable_device
:
4140 pci_set_drvdata(pdev
, NULL
);
4141 pci_disable_device(pdev
);
4142 out_ieee80211_free_hw
:
4143 iwl_free_traffic_mem(priv
);
4144 ieee80211_free_hw(priv
->hw
);
4149 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4151 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4152 unsigned long flags
;
4157 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4159 iwl_dbgfs_unregister(priv
);
4161 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4163 if (priv
->mac80211_registered
) {
4164 ieee80211_unregister_hw(priv
->hw
);
4165 priv
->mac80211_registered
= 0;
4171 * Make sure device is reset to low power before unloading driver.
4172 * This may be redundant with iwl_down(), but there are paths to
4173 * run iwl_down() without calling apm_ops.stop(), and there are
4174 * paths to avoid running iwl_down() at all before leaving driver.
4175 * This (inexpensive) call *makes sure* device is reset.
4177 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
4179 /* make sure we flush any pending irq or
4180 * tasklet for the driver
4182 spin_lock_irqsave(&priv
->lock
, flags
);
4183 iwl_disable_interrupts(priv
);
4184 spin_unlock_irqrestore(&priv
->lock
, flags
);
4186 iwl_synchronize_irq(priv
);
4188 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4190 cancel_delayed_work_sync(&priv
->_3945
.rfkill_poll
);
4192 iwl3945_dealloc_ucode_pci(priv
);
4195 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4196 iwl3945_hw_txq_ctx_free(priv
);
4198 iwl3945_unset_hw_params(priv
);
4200 /*netif_stop_queue(dev); */
4201 flush_workqueue(priv
->workqueue
);
4203 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4204 * priv->workqueue... so we can't take down the workqueue
4206 destroy_workqueue(priv
->workqueue
);
4207 priv
->workqueue
= NULL
;
4208 iwl_free_traffic_mem(priv
);
4210 free_irq(pdev
->irq
, priv
);
4211 pci_disable_msi(pdev
);
4213 pci_iounmap(pdev
, priv
->hw_base
);
4214 pci_release_regions(pdev
);
4215 pci_disable_device(pdev
);
4216 pci_set_drvdata(pdev
, NULL
);
4218 iwl_free_channel_map(priv
);
4219 iwlcore_free_geos(priv
);
4220 kfree(priv
->scan_cmd
);
4221 if (priv
->ibss_beacon
)
4222 dev_kfree_skb(priv
->ibss_beacon
);
4224 ieee80211_free_hw(priv
->hw
);
4228 /*****************************************************************************
4230 * driver and module entry point
4232 *****************************************************************************/
4234 static struct pci_driver iwl3945_driver
= {
4236 .id_table
= iwl3945_hw_card_ids
,
4237 .probe
= iwl3945_pci_probe
,
4238 .remove
= __devexit_p(iwl3945_pci_remove
),
4240 .suspend
= iwl_pci_suspend
,
4241 .resume
= iwl_pci_resume
,
4245 static int __init
iwl3945_init(void)
4249 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4250 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4252 ret
= iwl3945_rate_control_register();
4254 printk(KERN_ERR DRV_NAME
4255 "Unable to register rate control algorithm: %d\n", ret
);
4259 ret
= pci_register_driver(&iwl3945_driver
);
4261 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4262 goto error_register
;
4268 iwl3945_rate_control_unregister();
4272 static void __exit
iwl3945_exit(void)
4274 pci_unregister_driver(&iwl3945_driver
);
4275 iwl3945_rate_control_unregister();
4278 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4280 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, S_IRUGO
);
4281 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4282 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, S_IRUGO
);
4283 MODULE_PARM_DESC(swcrypto
,
4284 "using software crypto (default 1 [software])\n");
4285 #ifdef CONFIG_IWLWIFI_DEBUG
4286 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4287 MODULE_PARM_DESC(debug
, "debug output mask");
4289 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
,
4291 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4292 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, S_IRUGO
);
4293 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4295 module_exit(iwl3945_exit
);
4296 module_init(iwl3945_init
);