1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define DRV_VERSION IWLWIFI_VERSION VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 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
->shared_virt
)
355 pci_free_consistent(priv
->pci_dev
,
356 sizeof(struct iwl3945_shared
),
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;
483 spin_lock_irqsave(&priv
->lock
, flags
);
484 if (iwl_is_rfkill(priv
)) {
485 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
489 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
490 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
494 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
497 fc
= hdr
->frame_control
;
499 #ifdef CONFIG_IWLWIFI_DEBUG
500 if (ieee80211_is_auth(fc
))
501 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
502 else if (ieee80211_is_assoc_req(fc
))
503 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
504 else if (ieee80211_is_reassoc_req(fc
))
505 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
508 /* drop all non-injected data frame if we are not associated */
509 if (ieee80211_is_data(fc
) &&
510 !(info
->flags
& IEEE80211_TX_CTL_INJECTED
) &&
511 (!iwl_is_associated(priv
) ||
512 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
513 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
517 spin_unlock_irqrestore(&priv
->lock
, flags
);
519 hdr_len
= ieee80211_hdrlen(fc
);
521 /* Find (or create) index into station table for destination station */
522 if (info
->flags
& IEEE80211_TX_CTL_INJECTED
)
523 sta_id
= priv
->hw_params
.bcast_sta_id
;
525 sta_id
= iwl_get_sta_id(priv
, hdr
);
526 if (sta_id
== IWL_INVALID_STATION
) {
527 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
532 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
534 if (ieee80211_is_data_qos(fc
)) {
535 qc
= ieee80211_get_qos_ctl(hdr
);
536 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
537 if (unlikely(tid
>= MAX_TID_COUNT
))
539 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
541 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
543 cpu_to_le16(IEEE80211_SCTL_FRAG
));
547 /* Descriptor for chosen Tx queue */
548 txq
= &priv
->txq
[txq_id
];
551 if ((iwl_queue_space(q
) < q
->high_mark
))
554 spin_lock_irqsave(&priv
->lock
, flags
);
556 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
558 /* Set up driver data for this TFD */
559 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
560 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
562 /* Init first empty entry in queue's array of Tx/cmd buffers */
563 out_cmd
= txq
->cmd
[idx
];
564 out_meta
= &txq
->meta
[idx
];
565 tx_cmd
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
566 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
567 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
570 * Set up the Tx-command (not MAC!) header.
571 * Store the chosen Tx queue and TFD index within the sequence field;
572 * after Tx, uCode's Tx response will return this value so driver can
573 * locate the frame within the tx queue and do post-tx processing.
575 out_cmd
->hdr
.cmd
= REPLY_TX
;
576 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
577 INDEX_TO_SEQ(q
->write_ptr
)));
579 /* Copy MAC header from skb into command buffer */
580 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
583 if (info
->control
.hw_key
)
584 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
586 /* TODO need this for burst mode later on */
587 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
589 /* set is_hcca to 0; it probably will never be implemented */
590 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
592 /* Total # bytes to be transmitted */
594 tx_cmd
->len
= cpu_to_le16(len
);
596 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
597 iwl_update_stats(priv
, true, fc
, len
);
598 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
599 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
601 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
602 txq
->need_update
= 1;
604 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
607 txq
->need_update
= 0;
610 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
611 le16_to_cpu(out_cmd
->hdr
.sequence
));
612 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd
->tx_flags
));
613 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
614 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx_cmd
->hdr
,
615 ieee80211_hdrlen(fc
));
618 * Use the first empty entry in this queue's command buffer array
619 * to contain the Tx command and MAC header concatenated together
620 * (payload data will be in another buffer).
621 * Size of this varies, due to varying MAC header length.
622 * If end is not dword aligned, we'll have 2 extra bytes at the end
623 * of the MAC header (device reads on dword boundaries).
624 * We'll tell device about this padding later.
626 len
= sizeof(struct iwl3945_tx_cmd
) +
627 sizeof(struct iwl_cmd_header
) + hdr_len
;
630 len
= (len
+ 3) & ~3;
637 /* Physical address of this Tx command's header (not MAC header!),
638 * within command buffer array. */
639 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
640 len
, PCI_DMA_TODEVICE
);
641 /* we do not map meta data ... so we can safely access address to
642 * provide to unmap command*/
643 pci_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
644 pci_unmap_len_set(out_meta
, len
, len
);
646 /* Add buffer containing Tx command and MAC(!) header to TFD's
648 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
649 txcmd_phys
, len
, 1, 0);
652 /* Set up TFD's 2nd entry to point directly to remainder of skb,
653 * if any (802.11 null frames have no payload). */
654 len
= skb
->len
- hdr_len
;
656 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
657 len
, PCI_DMA_TODEVICE
);
658 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
664 /* Tell device the write index *just past* this latest filled TFD */
665 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
666 rc
= iwl_txq_update_write_ptr(priv
, txq
);
667 spin_unlock_irqrestore(&priv
->lock
, flags
);
672 if ((iwl_queue_space(q
) < q
->high_mark
)
673 && priv
->mac80211_registered
) {
674 if (wait_write_ptr
) {
675 spin_lock_irqsave(&priv
->lock
, flags
);
676 txq
->need_update
= 1;
677 iwl_txq_update_write_ptr(priv
, txq
);
678 spin_unlock_irqrestore(&priv
->lock
, flags
);
681 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
687 spin_unlock_irqrestore(&priv
->lock
, flags
);
692 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
694 #include "iwl-spectrum.h"
696 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
697 #define BEACON_TIME_MASK_HIGH 0xFF000000
698 #define TIME_UNIT 1024
701 * extended beacon time format
702 * time in usec will be changed into a 32-bit value in 8:24 format
703 * the high 1 byte is the beacon counts
704 * the lower 3 bytes is the time in usec within one beacon interval
707 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
711 u32 interval
= beacon_interval
* 1024;
713 if (!interval
|| !usec
)
716 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
717 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
719 return (quot
<< 24) + rem
;
722 /* base is usually what we get from ucode with each received frame,
723 * the same as HW timer counter counting down
726 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
728 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
729 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
730 u32 interval
= beacon_interval
* TIME_UNIT
;
731 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
732 (addon
& BEACON_TIME_MASK_HIGH
);
734 if (base_low
> addon_low
)
735 res
+= base_low
- addon_low
;
736 else if (base_low
< addon_low
) {
737 res
+= interval
+ base_low
- addon_low
;
742 return cpu_to_le32(res
);
745 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
746 struct ieee80211_measurement_params
*params
,
749 struct iwl_spectrum_cmd spectrum
;
750 struct iwl_rx_packet
*pkt
;
751 struct iwl_host_cmd cmd
= {
752 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
753 .data
= (void *)&spectrum
,
754 .flags
= CMD_WANT_SKB
,
756 u32 add_time
= le64_to_cpu(params
->start_time
);
758 int spectrum_resp_status
;
759 int duration
= le16_to_cpu(params
->duration
);
761 if (iwl_is_associated(priv
))
763 iwl3945_usecs_to_beacons(
764 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
765 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
767 memset(&spectrum
, 0, sizeof(spectrum
));
769 spectrum
.channel_count
= cpu_to_le16(1);
771 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
772 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
773 cmd
.len
= sizeof(spectrum
);
774 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
776 if (iwl_is_associated(priv
))
777 spectrum
.start_time
=
778 iwl3945_add_beacon_time(priv
->last_beacon_time
,
780 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
782 spectrum
.start_time
= 0;
784 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
785 spectrum
.channels
[0].channel
= params
->channel
;
786 spectrum
.channels
[0].type
= type
;
787 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
788 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
789 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
791 rc
= iwl_send_cmd_sync(priv
, &cmd
);
795 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
796 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
797 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
801 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
802 switch (spectrum_resp_status
) {
803 case 0: /* Command will be handled */
804 if (pkt
->u
.spectrum
.id
!= 0xff) {
805 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
807 priv
->measurement_status
&= ~MEASUREMENT_READY
;
809 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
813 case 1: /* Command will not be handled */
818 iwl_free_pages(priv
, cmd
.reply_page
);
824 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
825 struct iwl_rx_mem_buffer
*rxb
)
827 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
828 struct iwl_alive_resp
*palive
;
829 struct delayed_work
*pwork
;
831 palive
= &pkt
->u
.alive_frame
;
833 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
835 palive
->is_valid
, palive
->ver_type
,
836 palive
->ver_subtype
);
838 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
839 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
840 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
841 sizeof(struct iwl_alive_resp
));
842 pwork
= &priv
->init_alive_start
;
844 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
845 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
846 sizeof(struct iwl_alive_resp
));
847 pwork
= &priv
->alive_start
;
848 iwl3945_disable_events(priv
);
851 /* We delay the ALIVE response by 5ms to
852 * give the HW RF Kill time to activate... */
853 if (palive
->is_valid
== UCODE_VALID_OK
)
854 queue_delayed_work(priv
->workqueue
, pwork
,
855 msecs_to_jiffies(5));
857 IWL_WARN(priv
, "uCode did not respond OK.\n");
860 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
861 struct iwl_rx_mem_buffer
*rxb
)
863 #ifdef CONFIG_IWLWIFI_DEBUG
864 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
867 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
871 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
873 struct iwl_priv
*priv
=
874 container_of(work
, struct iwl_priv
, beacon_update
);
875 struct sk_buff
*beacon
;
877 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
878 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
881 IWL_ERR(priv
, "update beacon failed\n");
885 mutex_lock(&priv
->mutex
);
886 /* new beacon skb is allocated every time; dispose previous.*/
887 if (priv
->ibss_beacon
)
888 dev_kfree_skb(priv
->ibss_beacon
);
890 priv
->ibss_beacon
= beacon
;
891 mutex_unlock(&priv
->mutex
);
893 iwl3945_send_beacon_cmd(priv
);
896 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
897 struct iwl_rx_mem_buffer
*rxb
)
899 #ifdef CONFIG_IWLWIFI_DEBUG
900 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
901 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
902 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
904 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
905 "tsf %d %d rate %d\n",
906 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
907 beacon
->beacon_notify_hdr
.failure_frame
,
908 le32_to_cpu(beacon
->ibss_mgr_status
),
909 le32_to_cpu(beacon
->high_tsf
),
910 le32_to_cpu(beacon
->low_tsf
), rate
);
913 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
914 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
915 queue_work(priv
->workqueue
, &priv
->beacon_update
);
918 /* Handle notification from uCode that card's power state is changing
919 * due to software, hardware, or critical temperature RFKILL */
920 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
921 struct iwl_rx_mem_buffer
*rxb
)
923 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
924 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
925 unsigned long status
= priv
->status
;
927 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
928 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
929 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
931 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
932 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
934 if (flags
& HW_CARD_DISABLED
)
935 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
937 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
940 iwl_scan_cancel(priv
);
942 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
943 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
944 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
945 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
947 wake_up_interruptible(&priv
->wait_command_queue
);
951 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
953 * Setup the RX handlers for each of the reply types sent from the uCode
956 * This function chains into the hardware specific files for them to setup
957 * any hardware specific handlers as well.
959 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
961 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
962 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
963 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
964 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
965 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
966 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
967 iwl_rx_pm_debug_statistics_notif
;
968 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
971 * The same handler is used for both the REPLY to a discrete
972 * statistics request from the host as well as for the periodic
973 * statistics notifications (after received beacons) from the uCode.
975 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
976 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
978 iwl_setup_spectrum_handlers(priv
);
979 iwl_setup_rx_scan_handlers(priv
);
980 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
982 /* Set up hardware specific Rx handlers */
983 iwl3945_hw_rx_handler_setup(priv
);
986 /************************** RX-FUNCTIONS ****************************/
988 * Rx theory of operation
990 * The host allocates 32 DMA target addresses and passes the host address
991 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
995 * The host/firmware share two index registers for managing the Rx buffers.
997 * The READ index maps to the first position that the firmware may be writing
998 * to -- the driver can read up to (but not including) this position and get
1000 * The READ index is managed by the firmware once the card is enabled.
1002 * The WRITE index maps to the last position the driver has read from -- the
1003 * position preceding WRITE is the last slot the firmware can place a packet.
1005 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1008 * During initialization, the host sets up the READ queue position to the first
1009 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1011 * When the firmware places a packet in a buffer, it will advance the READ index
1012 * and fire the RX interrupt. The driver can then query the READ index and
1013 * process as many packets as possible, moving the WRITE index forward as it
1014 * resets the Rx queue buffers with new memory.
1016 * The management in the driver is as follows:
1017 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1018 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1019 * to replenish the iwl->rxq->rx_free.
1020 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1021 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1022 * 'processed' and 'read' driver indexes as well)
1023 * + A received packet is processed and handed to the kernel network stack,
1024 * detached from the iwl->rxq. The driver 'processed' index is updated.
1025 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1026 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1027 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1028 * were enough free buffers and RX_STALLED is set it is cleared.
1033 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1034 * iwl3945_rx_queue_restock
1035 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1036 * queue, updates firmware pointers, and updates
1037 * the WRITE index. If insufficient rx_free buffers
1038 * are available, schedules iwl3945_rx_replenish
1040 * -- enable interrupts --
1041 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1042 * READ INDEX, detaching the SKB from the pool.
1043 * Moves the packet buffer from queue to rx_used.
1044 * Calls iwl3945_rx_queue_restock to refill any empty
1051 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1053 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1054 dma_addr_t dma_addr
)
1056 return cpu_to_le32((u32
)dma_addr
);
1060 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1062 * If there are slots in the RX queue that need to be restocked,
1063 * and we have free pre-allocated buffers, fill the ranks as much
1064 * as we can, pulling from rx_free.
1066 * This moves the 'write' index forward to catch up with 'processed', and
1067 * also updates the memory address in the firmware to reference the new
1070 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1072 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1073 struct list_head
*element
;
1074 struct iwl_rx_mem_buffer
*rxb
;
1075 unsigned long flags
;
1078 spin_lock_irqsave(&rxq
->lock
, flags
);
1079 write
= rxq
->write
& ~0x7;
1080 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1081 /* Get next free Rx buffer, remove from free list */
1082 element
= rxq
->rx_free
.next
;
1083 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1086 /* Point to Rx buffer via next RBD in circular buffer */
1087 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->page_dma
);
1088 rxq
->queue
[rxq
->write
] = rxb
;
1089 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1092 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1093 /* If the pre-allocated buffer pool is dropping low, schedule to
1095 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1096 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1099 /* If we've added more space for the firmware to place data, tell it.
1100 * Increment device's write pointer in multiples of 8. */
1101 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1102 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1103 spin_lock_irqsave(&rxq
->lock
, flags
);
1104 rxq
->need_update
= 1;
1105 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1106 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1115 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1117 * When moving to rx_free an SKB is allocated for the slot.
1119 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1120 * This is called as a scheduled work item (except for during initialization)
1122 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1124 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1125 struct list_head
*element
;
1126 struct iwl_rx_mem_buffer
*rxb
;
1128 unsigned long flags
;
1129 gfp_t gfp_mask
= priority
;
1132 spin_lock_irqsave(&rxq
->lock
, flags
);
1134 if (list_empty(&rxq
->rx_used
)) {
1135 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1138 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1140 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1141 gfp_mask
|= __GFP_NOWARN
;
1143 if (priv
->hw_params
.rx_page_order
> 0)
1144 gfp_mask
|= __GFP_COMP
;
1146 /* Alloc a new receive buffer */
1147 page
= alloc_pages(gfp_mask
, priv
->hw_params
.rx_page_order
);
1149 if (net_ratelimit())
1150 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1151 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1153 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1154 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1156 /* We don't reschedule replenish work here -- we will
1157 * call the restock method and if it still needs
1158 * more buffers it will schedule replenish */
1162 spin_lock_irqsave(&rxq
->lock
, flags
);
1163 if (list_empty(&rxq
->rx_used
)) {
1164 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1165 __free_pages(page
, priv
->hw_params
.rx_page_order
);
1168 element
= rxq
->rx_used
.next
;
1169 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1171 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1174 /* Get physical address of RB/SKB */
1175 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, page
, 0,
1176 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1177 PCI_DMA_FROMDEVICE
);
1179 spin_lock_irqsave(&rxq
->lock
, flags
);
1181 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1183 priv
->alloc_rxb_page
++;
1185 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1189 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1191 unsigned long flags
;
1193 spin_lock_irqsave(&rxq
->lock
, flags
);
1194 INIT_LIST_HEAD(&rxq
->rx_free
);
1195 INIT_LIST_HEAD(&rxq
->rx_used
);
1196 /* Fill the rx_used queue with _all_ of the Rx buffers */
1197 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1198 /* In the reset function, these buffers may have been allocated
1199 * to an SKB, so we need to unmap and free potential storage */
1200 if (rxq
->pool
[i
].page
!= NULL
) {
1201 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1202 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1203 PCI_DMA_FROMDEVICE
);
1204 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1205 rxq
->pool
[i
].page
= NULL
;
1207 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1210 /* Set us so that we have processed and used all buffers, but have
1211 * not restocked the Rx queue with fresh buffers */
1212 rxq
->read
= rxq
->write
= 0;
1213 rxq
->write_actual
= 0;
1214 rxq
->free_count
= 0;
1215 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1218 void iwl3945_rx_replenish(void *data
)
1220 struct iwl_priv
*priv
= data
;
1221 unsigned long flags
;
1223 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1225 spin_lock_irqsave(&priv
->lock
, flags
);
1226 iwl3945_rx_queue_restock(priv
);
1227 spin_unlock_irqrestore(&priv
->lock
, flags
);
1230 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1232 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1234 iwl3945_rx_queue_restock(priv
);
1238 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1239 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1240 * This free routine walks the list of POOL entries and if SKB is set to
1241 * non NULL it is unmapped and freed
1243 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1246 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1247 if (rxq
->pool
[i
].page
!= NULL
) {
1248 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1249 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1250 PCI_DMA_FROMDEVICE
);
1251 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1252 rxq
->pool
[i
].page
= NULL
;
1256 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1258 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1259 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1261 rxq
->rb_stts
= NULL
;
1265 /* Convert linear signal-to-noise ratio into dB */
1266 static u8 ratio2dB
[100] = {
1267 /* 0 1 2 3 4 5 6 7 8 9 */
1268 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1269 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1270 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1271 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1272 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1273 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1274 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1275 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1276 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1277 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1280 /* Calculates a relative dB value from a ratio of linear
1281 * (i.e. not dB) signal levels.
1282 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1283 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1285 /* 1000:1 or higher just report as 60 dB */
1286 if (sig_ratio
>= 1000)
1289 /* 100:1 or higher, divide by 10 and use table,
1290 * add 20 dB to make up for divide by 10 */
1291 if (sig_ratio
>= 100)
1292 return 20 + (int)ratio2dB
[sig_ratio
/10];
1294 /* We shouldn't see this */
1298 /* Use table for ratios 1:1 - 99:1 */
1299 return (int)ratio2dB
[sig_ratio
];
1302 #define PERFECT_RSSI (-20) /* dBm */
1303 #define WORST_RSSI (-95) /* dBm */
1304 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1306 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1307 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1308 * about formulas used below. */
1309 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1312 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1314 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1315 * as indicator; formula is (signal dbm - noise dbm).
1316 * SNR at or above 40 is a great signal (100%).
1317 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1318 * Weakest usable signal is usually 10 - 15 dB SNR. */
1320 if (rssi_dbm
- noise_dbm
>= 40)
1322 else if (rssi_dbm
< noise_dbm
)
1324 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1326 /* Else use just the signal level.
1327 * This formula is a least squares fit of data points collected and
1328 * compared with a reference system that had a percentage (%) display
1329 * for signal quality. */
1331 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1332 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1333 (RSSI_RANGE
* RSSI_RANGE
);
1337 else if (sig_qual
< 1)
1344 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1346 * Uses the priv->rx_handlers callback function array to invoke
1347 * the appropriate handlers, including command responses,
1348 * frame-received notifications, and other notifications.
1350 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1352 struct iwl_rx_mem_buffer
*rxb
;
1353 struct iwl_rx_packet
*pkt
;
1354 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1357 unsigned long flags
;
1360 int total_empty
= 0;
1362 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1363 * buffer that the driver may process (last buffer filled by ucode). */
1364 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1367 /* calculate total frames need to be restock after handling RX */
1368 total_empty
= r
- rxq
->write_actual
;
1369 if (total_empty
< 0)
1370 total_empty
+= RX_QUEUE_SIZE
;
1372 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1374 /* Rx interrupt, but nothing sent from uCode */
1376 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1379 rxb
= rxq
->queue
[i
];
1381 /* If an RXB doesn't have a Rx queue slot associated with it,
1382 * then a bug has been introduced in the queue refilling
1383 * routines -- catch it here */
1384 BUG_ON(rxb
== NULL
);
1386 rxq
->queue
[i
] = NULL
;
1388 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
1389 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1390 PCI_DMA_FROMDEVICE
);
1391 pkt
= rxb_addr(rxb
);
1393 trace_iwlwifi_dev_rx(priv
, pkt
,
1394 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
1396 /* Reclaim a command buffer only if this packet is a response
1397 * to a (driver-originated) command.
1398 * If the packet (e.g. Rx frame) originated from uCode,
1399 * there is no command buffer to reclaim.
1400 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1401 * but apparently a few don't get set; catch them here. */
1402 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1403 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1404 (pkt
->hdr
.cmd
!= REPLY_TX
);
1406 /* Based on type of command response or notification,
1407 * handle those that need handling via function in
1408 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1409 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1410 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1411 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1412 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1413 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1415 /* No handling needed */
1417 "r %d i %d No handler needed for %s, 0x%02x\n",
1418 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1423 * XXX: After here, we should always check rxb->page
1424 * against NULL before touching it or its virtual
1425 * memory (pkt). Because some rx_handler might have
1426 * already taken or freed the pages.
1430 /* Invoke any callbacks, transfer the buffer to caller,
1431 * and fire off the (possibly) blocking iwl_send_cmd()
1432 * as we reclaim the driver command queue */
1434 iwl_tx_cmd_complete(priv
, rxb
);
1436 IWL_WARN(priv
, "Claim null rxb?\n");
1439 /* Reuse the page if possible. For notification packets and
1440 * SKBs that fail to Rx correctly, add them back into the
1441 * rx_free list for reuse later. */
1442 spin_lock_irqsave(&rxq
->lock
, flags
);
1443 if (rxb
->page
!= NULL
) {
1444 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1445 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1446 PCI_DMA_FROMDEVICE
);
1447 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1450 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1452 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1454 i
= (i
+ 1) & RX_QUEUE_MASK
;
1455 /* If there are a lot of unused frames,
1456 * restock the Rx queue so ucode won't assert. */
1461 iwl3945_rx_replenish_now(priv
);
1467 /* Backtrack one entry */
1470 iwl3945_rx_replenish_now(priv
);
1472 iwl3945_rx_queue_restock(priv
);
1475 /* call this function to flush any scheduled tasklet */
1476 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1478 /* wait to make sure we flush pending tasklet*/
1479 synchronize_irq(priv
->pci_dev
->irq
);
1480 tasklet_kill(&priv
->irq_tasklet
);
1483 static const char *desc_lookup(int i
)
1491 return "BAD_CHECKSUM";
1493 return "NMI_INTERRUPT";
1497 return "FATAL_ERROR";
1503 #define ERROR_START_OFFSET (1 * sizeof(u32))
1504 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1506 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1509 u32 desc
, time
, count
, base
, data1
;
1510 u32 blink1
, blink2
, ilink1
, ilink2
;
1512 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1514 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1515 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1520 count
= iwl_read_targ_mem(priv
, base
);
1522 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1523 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1524 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1525 priv
->status
, count
);
1528 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1529 "ilink1 nmiPC Line\n");
1530 for (i
= ERROR_START_OFFSET
;
1531 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1532 i
+= ERROR_ELEM_SIZE
) {
1533 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1535 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1537 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1539 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1541 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1543 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1545 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1548 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1549 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1550 ilink1
, ilink2
, data1
);
1551 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, 0,
1552 0, blink1
, blink2
, ilink1
, ilink2
);
1556 #define EVENT_START_OFFSET (6 * sizeof(u32))
1559 * iwl3945_print_event_log - Dump error event log to syslog
1562 static int iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1563 u32 num_events
, u32 mode
,
1564 int pos
, char **buf
, size_t bufsz
)
1567 u32 base
; /* SRAM byte address of event log header */
1568 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1569 u32 ptr
; /* SRAM byte address of log data */
1570 u32 ev
, time
, data
; /* event log data */
1571 unsigned long reg_flags
;
1573 if (num_events
== 0)
1576 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1579 event_size
= 2 * sizeof(u32
);
1581 event_size
= 3 * sizeof(u32
);
1583 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1585 /* Make sure device is powered up for SRAM reads */
1586 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
1587 iwl_grab_nic_access(priv
);
1589 /* Set starting address; reads will auto-increment */
1590 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
1593 /* "time" is actually "data" for mode 0 (no timestamp).
1594 * place event id # at far right for easier visual parsing. */
1595 for (i
= 0; i
< num_events
; i
++) {
1596 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1597 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1601 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1605 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1606 trace_iwlwifi_dev_ucode_event(priv
, 0,
1610 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1612 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1613 "%010u:0x%08x:%04u\n",
1616 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n",
1618 trace_iwlwifi_dev_ucode_event(priv
, time
,
1624 /* Allow device to power down */
1625 iwl_release_nic_access(priv
);
1626 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
1631 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1633 static int iwl3945_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
1634 u32 num_wraps
, u32 next_entry
,
1636 int pos
, char **buf
, size_t bufsz
)
1639 * display the newest DEFAULT_LOG_ENTRIES entries
1640 * i.e the entries just before the next ont that uCode would fill.
1643 if (next_entry
< size
) {
1644 pos
= iwl3945_print_event_log(priv
,
1645 capacity
- (size
- next_entry
),
1646 size
- next_entry
, mode
,
1648 pos
= iwl3945_print_event_log(priv
, 0,
1652 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1656 if (next_entry
< size
)
1657 pos
= iwl3945_print_event_log(priv
, 0,
1661 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1668 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1669 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1671 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1673 int iwl3945_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
1674 char **buf
, bool display
)
1676 u32 base
; /* SRAM byte address of event log header */
1677 u32 capacity
; /* event log capacity in # entries */
1678 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1679 u32 num_wraps
; /* # times uCode wrapped to top of log */
1680 u32 next_entry
; /* index of next entry to be written by uCode */
1681 u32 size
; /* # entries that we'll print */
1685 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1686 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1687 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1691 /* event log header */
1692 capacity
= iwl_read_targ_mem(priv
, base
);
1693 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1694 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1695 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1697 if (capacity
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1698 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
1699 capacity
, IWL3945_MAX_EVENT_LOG_SIZE
);
1700 capacity
= IWL3945_MAX_EVENT_LOG_SIZE
;
1703 if (next_entry
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1704 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
1705 next_entry
, IWL3945_MAX_EVENT_LOG_SIZE
);
1706 next_entry
= IWL3945_MAX_EVENT_LOG_SIZE
;
1709 size
= num_wraps
? capacity
: next_entry
;
1711 /* bail out if nothing in log */
1713 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1717 #ifdef CONFIG_IWLWIFI_DEBUG
1718 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
1719 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1720 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1722 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1723 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1726 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %d count\n",
1729 #ifdef CONFIG_IWLWIFI_DEBUG
1732 bufsz
= capacity
* 48;
1735 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
1739 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
1740 /* if uCode has wrapped back to top of log,
1741 * start at the oldest entry,
1742 * i.e the next one that uCode would fill.
1745 pos
= iwl3945_print_event_log(priv
, next_entry
,
1746 capacity
- next_entry
, mode
,
1749 /* (then/else) start at top of log */
1750 pos
= iwl3945_print_event_log(priv
, 0, next_entry
, mode
,
1753 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1754 next_entry
, size
, mode
,
1757 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1758 next_entry
, size
, mode
,
1764 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1766 u32 inta
, handled
= 0;
1768 unsigned long flags
;
1769 #ifdef CONFIG_IWLWIFI_DEBUG
1773 spin_lock_irqsave(&priv
->lock
, flags
);
1775 /* Ack/clear/reset pending uCode interrupts.
1776 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1777 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1778 inta
= iwl_read32(priv
, CSR_INT
);
1779 iwl_write32(priv
, CSR_INT
, inta
);
1781 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1782 * Any new interrupts that happen after this, either while we're
1783 * in this tasklet, or later, will show up in next ISR/tasklet. */
1784 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1785 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1787 #ifdef CONFIG_IWLWIFI_DEBUG
1788 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1789 /* just for debug */
1790 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1791 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1792 inta
, inta_mask
, inta_fh
);
1796 spin_unlock_irqrestore(&priv
->lock
, flags
);
1798 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1799 * atomic, make sure that inta covers all the interrupts that
1800 * we've discovered, even if FH interrupt came in just after
1801 * reading CSR_INT. */
1802 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1803 inta
|= CSR_INT_BIT_FH_RX
;
1804 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1805 inta
|= CSR_INT_BIT_FH_TX
;
1807 /* Now service all interrupt bits discovered above. */
1808 if (inta
& CSR_INT_BIT_HW_ERR
) {
1809 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1811 /* Tell the device to stop sending interrupts */
1812 iwl_disable_interrupts(priv
);
1814 priv
->isr_stats
.hw
++;
1815 iwl_irq_handle_error(priv
);
1817 handled
|= CSR_INT_BIT_HW_ERR
;
1822 #ifdef CONFIG_IWLWIFI_DEBUG
1823 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1824 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1825 if (inta
& CSR_INT_BIT_SCD
) {
1826 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1827 "the frame/frames.\n");
1828 priv
->isr_stats
.sch
++;
1831 /* Alive notification via Rx interrupt will do the real work */
1832 if (inta
& CSR_INT_BIT_ALIVE
) {
1833 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1834 priv
->isr_stats
.alive
++;
1838 /* Safely ignore these bits for debug checks below */
1839 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1841 /* Error detected by uCode */
1842 if (inta
& CSR_INT_BIT_SW_ERR
) {
1843 IWL_ERR(priv
, "Microcode SW error detected. "
1844 "Restarting 0x%X.\n", inta
);
1845 priv
->isr_stats
.sw
++;
1846 priv
->isr_stats
.sw_err
= inta
;
1847 iwl_irq_handle_error(priv
);
1848 handled
|= CSR_INT_BIT_SW_ERR
;
1851 /* uCode wakes up after power-down sleep */
1852 if (inta
& CSR_INT_BIT_WAKEUP
) {
1853 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1854 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1855 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1856 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1857 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1858 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1859 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1860 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1862 priv
->isr_stats
.wakeup
++;
1863 handled
|= CSR_INT_BIT_WAKEUP
;
1866 /* All uCode command responses, including Tx command responses,
1867 * Rx "responses" (frame-received notification), and other
1868 * notifications from uCode come through here*/
1869 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1870 iwl3945_rx_handle(priv
);
1871 priv
->isr_stats
.rx
++;
1872 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1875 if (inta
& CSR_INT_BIT_FH_TX
) {
1876 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1877 priv
->isr_stats
.tx
++;
1879 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1880 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1881 (FH39_SRVC_CHNL
), 0x0);
1882 handled
|= CSR_INT_BIT_FH_TX
;
1885 if (inta
& ~handled
) {
1886 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1887 priv
->isr_stats
.unhandled
++;
1890 if (inta
& ~priv
->inta_mask
) {
1891 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1892 inta
& ~priv
->inta_mask
);
1893 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1896 /* Re-enable all interrupts */
1897 /* only Re-enable if disabled by irq */
1898 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1899 iwl_enable_interrupts(priv
);
1901 #ifdef CONFIG_IWLWIFI_DEBUG
1902 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1903 inta
= iwl_read32(priv
, CSR_INT
);
1904 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1905 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1906 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1907 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1912 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1913 enum ieee80211_band band
,
1914 u8 is_active
, u8 n_probes
,
1915 struct iwl3945_scan_channel
*scan_ch
)
1917 struct ieee80211_channel
*chan
;
1918 const struct ieee80211_supported_band
*sband
;
1919 const struct iwl_channel_info
*ch_info
;
1920 u16 passive_dwell
= 0;
1921 u16 active_dwell
= 0;
1924 sband
= iwl_get_hw_mode(priv
, band
);
1928 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1929 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1931 if (passive_dwell
<= active_dwell
)
1932 passive_dwell
= active_dwell
+ 1;
1934 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1935 chan
= priv
->scan_request
->channels
[i
];
1937 if (chan
->band
!= band
)
1940 scan_ch
->channel
= chan
->hw_value
;
1942 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1943 if (!is_channel_valid(ch_info
)) {
1944 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1949 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1950 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1951 /* If passive , set up for auto-switch
1952 * and use long active_dwell time.
1954 if (!is_active
|| is_channel_passive(ch_info
) ||
1955 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1956 scan_ch
->type
= 0; /* passive */
1957 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1958 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1960 scan_ch
->type
= 1; /* active */
1963 /* Set direct probe bits. These may be used both for active
1964 * scan channels (probes gets sent right away),
1965 * or for passive channels (probes get se sent only after
1966 * hearing clear Rx packet).*/
1967 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1969 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1971 /* uCode v1 does not allow setting direct probe bits on
1972 * passive channel. */
1973 if ((scan_ch
->type
& 1) && n_probes
)
1974 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1977 /* Set txpower levels to defaults */
1978 scan_ch
->tpc
.dsp_atten
= 110;
1979 /* scan_pwr_info->tpc.dsp_atten; */
1981 /*scan_pwr_info->tpc.tx_gain; */
1982 if (band
== IEEE80211_BAND_5GHZ
)
1983 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1985 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1986 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1988 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1992 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1994 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1995 (scan_ch
->type
& 1) ?
1996 active_dwell
: passive_dwell
);
2002 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
2006 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
2007 struct ieee80211_rate
*rates
)
2011 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
2012 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
2013 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
2014 rates
[i
].hw_value_short
= i
;
2016 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
2018 * If CCK != 1M then set short preamble rate flag.
2020 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
2021 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
2026 /******************************************************************************
2028 * uCode download functions
2030 ******************************************************************************/
2032 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
2034 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2035 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2036 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2037 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2038 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2039 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2043 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2044 * looking at all data.
2046 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2053 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2055 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2056 IWL39_RTC_INST_LOWER_BOUND
);
2059 for (; len
> 0; len
-= sizeof(u32
), image
++) {
2060 /* read data comes through single port, auto-incr addr */
2061 /* NOTE: Use the debugless read so we don't flood kernel log
2062 * if IWL_DL_IO is set */
2063 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2064 if (val
!= le32_to_cpu(*image
)) {
2065 IWL_ERR(priv
, "uCode INST section is invalid at "
2066 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2067 save_len
- len
, val
, le32_to_cpu(*image
));
2077 IWL_DEBUG_INFO(priv
,
2078 "ucode image in INSTRUCTION memory is good\n");
2085 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2086 * using sample data 100 bytes apart. If these sample points are good,
2087 * it's a pretty good bet that everything between them is good, too.
2089 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2096 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2098 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2099 /* read data comes through single port, auto-incr addr */
2100 /* NOTE: Use the debugless read so we don't flood kernel log
2101 * if IWL_DL_IO is set */
2102 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2103 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2104 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2105 if (val
!= le32_to_cpu(*image
)) {
2106 #if 0 /* Enable this if you want to see details */
2107 IWL_ERR(priv
, "uCode INST section is invalid at "
2108 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2123 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2124 * and verify its contents
2126 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2133 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2134 len
= priv
->ucode_boot
.len
;
2135 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2137 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2141 /* Try initialize */
2142 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2143 len
= priv
->ucode_init
.len
;
2144 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2146 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2150 /* Try runtime/protocol */
2151 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2152 len
= priv
->ucode_code
.len
;
2153 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2155 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2159 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2161 /* Since nothing seems to match, show first several data entries in
2162 * instruction SRAM, so maybe visual inspection will give a clue.
2163 * Selection of bootstrap image (vs. other images) is arbitrary. */
2164 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2165 len
= priv
->ucode_boot
.len
;
2166 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2171 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2173 /* Remove all resets to allow NIC to operate */
2174 iwl_write32(priv
, CSR_RESET
, 0);
2178 * iwl3945_read_ucode - Read uCode images from disk file.
2180 * Copy into buffers for card to fetch via bus-mastering
2182 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2184 const struct iwl_ucode_header
*ucode
;
2185 int ret
= -EINVAL
, index
;
2186 const struct firmware
*ucode_raw
;
2187 /* firmware file name contains uCode/driver compatibility version */
2188 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2189 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2190 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2194 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2196 /* Ask kernel firmware_class module to get the boot firmware off disk.
2197 * request_firmware() is synchronous, file is in memory on return. */
2198 for (index
= api_max
; index
>= api_min
; index
--) {
2199 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2200 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2202 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2209 if (index
< api_max
)
2210 IWL_ERR(priv
, "Loaded firmware %s, "
2211 "which is deprecated. "
2212 " Please use API v%u instead.\n",
2214 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2215 "(%zd bytes) from disk\n",
2216 buf
, ucode_raw
->size
);
2224 /* Make sure that we got at least our header! */
2225 if (ucode_raw
->size
< priv
->cfg
->ops
->ucode
->get_header_size(1)) {
2226 IWL_ERR(priv
, "File size way too small!\n");
2231 /* Data from ucode file: header followed by uCode images */
2232 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2234 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2235 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2236 inst_size
= priv
->cfg
->ops
->ucode
->get_inst_size(ucode
, api_ver
);
2237 data_size
= priv
->cfg
->ops
->ucode
->get_data_size(ucode
, api_ver
);
2238 init_size
= priv
->cfg
->ops
->ucode
->get_init_size(ucode
, api_ver
);
2240 priv
->cfg
->ops
->ucode
->get_init_data_size(ucode
, api_ver
);
2241 boot_size
= priv
->cfg
->ops
->ucode
->get_boot_size(ucode
, api_ver
);
2242 src
= priv
->cfg
->ops
->ucode
->get_data(ucode
, api_ver
);
2244 /* api_ver should match the api version forming part of the
2245 * firmware filename ... but we don't check for that and only rely
2246 * on the API version read from firmware header from here on forward */
2248 if (api_ver
< api_min
|| api_ver
> api_max
) {
2249 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2250 "Driver supports v%u, firmware is v%u.\n",
2252 priv
->ucode_ver
= 0;
2256 if (api_ver
!= api_max
)
2257 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2258 "got %u. New firmware can be obtained "
2259 "from http://www.intellinuxwireless.org.\n",
2262 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2263 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2264 IWL_UCODE_MINOR(priv
->ucode_ver
),
2265 IWL_UCODE_API(priv
->ucode_ver
),
2266 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2268 snprintf(priv
->hw
->wiphy
->fw_version
,
2269 sizeof(priv
->hw
->wiphy
->fw_version
),
2271 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2272 IWL_UCODE_MINOR(priv
->ucode_ver
),
2273 IWL_UCODE_API(priv
->ucode_ver
),
2274 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2276 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2278 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2280 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2282 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2284 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2286 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2290 /* Verify size of file vs. image size info in file's header */
2291 if (ucode_raw
->size
!= priv
->cfg
->ops
->ucode
->get_header_size(api_ver
) +
2292 inst_size
+ data_size
+ init_size
+
2293 init_data_size
+ boot_size
) {
2295 IWL_DEBUG_INFO(priv
,
2296 "uCode file size %zd does not match expected size\n",
2302 /* Verify that uCode images will fit in card's SRAM */
2303 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2304 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2310 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2311 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2316 if (init_size
> IWL39_MAX_INST_SIZE
) {
2317 IWL_DEBUG_INFO(priv
,
2318 "uCode init instr len %d too large to fit in\n",
2323 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2324 IWL_DEBUG_INFO(priv
,
2325 "uCode init data len %d too large to fit in\n",
2330 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2331 IWL_DEBUG_INFO(priv
,
2332 "uCode boot instr len %d too large to fit in\n",
2338 /* Allocate ucode buffers for card's bus-master loading ... */
2340 /* Runtime instructions and 2 copies of data:
2341 * 1) unmodified from disk
2342 * 2) backup cache for save/restore during power-downs */
2343 priv
->ucode_code
.len
= inst_size
;
2344 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2346 priv
->ucode_data
.len
= data_size
;
2347 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2349 priv
->ucode_data_backup
.len
= data_size
;
2350 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2352 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2353 !priv
->ucode_data_backup
.v_addr
)
2356 /* Initialization instructions and data */
2357 if (init_size
&& init_data_size
) {
2358 priv
->ucode_init
.len
= init_size
;
2359 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2361 priv
->ucode_init_data
.len
= init_data_size
;
2362 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2364 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2368 /* Bootstrap (instructions only, no data) */
2370 priv
->ucode_boot
.len
= boot_size
;
2371 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2373 if (!priv
->ucode_boot
.v_addr
)
2377 /* Copy images into buffers for card's bus-master reads ... */
2379 /* Runtime instructions (first block of data in file) */
2381 IWL_DEBUG_INFO(priv
,
2382 "Copying (but not loading) uCode instr len %zd\n", len
);
2383 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2386 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2387 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2389 /* Runtime data (2nd block)
2390 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2392 IWL_DEBUG_INFO(priv
,
2393 "Copying (but not loading) uCode data len %zd\n", len
);
2394 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2395 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2398 /* Initialization instructions (3rd block) */
2401 IWL_DEBUG_INFO(priv
,
2402 "Copying (but not loading) init instr len %zd\n", len
);
2403 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2407 /* Initialization data (4th block) */
2408 if (init_data_size
) {
2409 len
= init_data_size
;
2410 IWL_DEBUG_INFO(priv
,
2411 "Copying (but not loading) init data len %zd\n", len
);
2412 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2416 /* Bootstrap instructions (5th block) */
2418 IWL_DEBUG_INFO(priv
,
2419 "Copying (but not loading) boot instr len %zd\n", len
);
2420 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2422 /* We have our copies now, allow OS release its copies */
2423 release_firmware(ucode_raw
);
2427 IWL_ERR(priv
, "failed to allocate pci memory\n");
2429 iwl3945_dealloc_ucode_pci(priv
);
2432 release_firmware(ucode_raw
);
2440 * iwl3945_set_ucode_ptrs - Set uCode address location
2442 * Tell initialization uCode where to find runtime uCode.
2444 * BSM registers initially contain pointers to initialization uCode.
2445 * We need to replace them to load runtime uCode inst and data,
2446 * and to save runtime data when powering down.
2448 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2453 /* bits 31:0 for 3945 */
2454 pinst
= priv
->ucode_code
.p_addr
;
2455 pdata
= priv
->ucode_data_backup
.p_addr
;
2457 /* Tell bootstrap uCode where to find image to load */
2458 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2459 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2460 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2461 priv
->ucode_data
.len
);
2463 /* Inst byte count must be last to set up, bit 31 signals uCode
2464 * that all new ptr/size info is in place */
2465 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2466 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2468 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2474 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2476 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2478 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2480 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2482 /* Check alive response for "valid" sign from uCode */
2483 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2484 /* We had an error bringing up the hardware, so take it
2485 * all the way back down so we can try again */
2486 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2490 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2491 * This is a paranoid check, because we would not have gotten the
2492 * "initialize" alive if code weren't properly loaded. */
2493 if (iwl3945_verify_ucode(priv
)) {
2494 /* Runtime instruction load was bad;
2495 * take it all the way back down so we can try again */
2496 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2500 /* Send pointers to protocol/runtime uCode image ... init code will
2501 * load and launch runtime uCode, which will send us another "Alive"
2503 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2504 if (iwl3945_set_ucode_ptrs(priv
)) {
2505 /* Runtime instruction load won't happen;
2506 * take it all the way back down so we can try again */
2507 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2513 queue_work(priv
->workqueue
, &priv
->restart
);
2517 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2518 * from protocol/runtime uCode (initialization uCode's
2519 * Alive gets handled by iwl3945_init_alive_start()).
2521 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2523 int thermal_spin
= 0;
2526 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2528 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2529 /* We had an error bringing up the hardware, so take it
2530 * all the way back down so we can try again */
2531 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2535 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2536 * This is a paranoid check, because we would not have gotten the
2537 * "runtime" alive if code weren't properly loaded. */
2538 if (iwl3945_verify_ucode(priv
)) {
2539 /* Runtime instruction load was bad;
2540 * take it all the way back down so we can try again */
2541 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2545 iwl_clear_stations_table(priv
);
2547 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2548 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2551 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2552 /* if RFKILL is not on, then wait for thermal
2553 * sensor in adapter to kick in */
2554 while (iwl3945_hw_get_temperature(priv
) == 0) {
2560 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2563 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2565 /* After the ALIVE response, we can send commands to 3945 uCode */
2566 set_bit(STATUS_ALIVE
, &priv
->status
);
2568 if (iwl_is_rfkill(priv
))
2571 ieee80211_wake_queues(priv
->hw
);
2573 priv
->active_rate
= priv
->rates_mask
;
2574 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2576 iwl_power_update_mode(priv
, true);
2578 if (iwl_is_associated(priv
)) {
2579 struct iwl3945_rxon_cmd
*active_rxon
=
2580 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2582 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2583 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2585 /* Initialize our rx_config data */
2586 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2589 /* Configure Bluetooth device coexistence support */
2590 iwl_send_bt_config(priv
);
2592 /* Configure the adapter for unassociated operation */
2593 iwlcore_commit_rxon(priv
);
2595 iwl3945_reg_txpower_periodic(priv
);
2597 iwl_leds_init(priv
);
2599 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2600 set_bit(STATUS_READY
, &priv
->status
);
2601 wake_up_interruptible(&priv
->wait_command_queue
);
2603 /* reassociate for ADHOC mode */
2604 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2605 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2608 iwl_mac_beacon_update(priv
->hw
, beacon
);
2611 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2612 iwl_set_mode(priv
, priv
->iw_mode
);
2617 queue_work(priv
->workqueue
, &priv
->restart
);
2620 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2622 static void __iwl3945_down(struct iwl_priv
*priv
)
2624 unsigned long flags
;
2625 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2626 struct ieee80211_conf
*conf
= NULL
;
2628 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2630 conf
= ieee80211_get_hw_conf(priv
->hw
);
2633 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2635 iwl_clear_stations_table(priv
);
2637 /* Unblock any waiting calls */
2638 wake_up_interruptible_all(&priv
->wait_command_queue
);
2640 /* Wipe out the EXIT_PENDING status bit if we are not actually
2641 * exiting the module */
2643 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2645 /* stop and reset the on-board processor */
2646 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2648 /* tell the device to stop sending interrupts */
2649 spin_lock_irqsave(&priv
->lock
, flags
);
2650 iwl_disable_interrupts(priv
);
2651 spin_unlock_irqrestore(&priv
->lock
, flags
);
2652 iwl_synchronize_irq(priv
);
2654 if (priv
->mac80211_registered
)
2655 ieee80211_stop_queues(priv
->hw
);
2657 /* If we have not previously called iwl3945_init() then
2658 * clear all bits but the RF Kill bits and return */
2659 if (!iwl_is_init(priv
)) {
2660 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2662 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2663 STATUS_GEO_CONFIGURED
|
2664 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2665 STATUS_EXIT_PENDING
;
2669 /* ...otherwise clear out all the status bits but the RF Kill
2670 * bit and continue taking the NIC down. */
2671 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2673 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2674 STATUS_GEO_CONFIGURED
|
2675 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2677 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2678 STATUS_EXIT_PENDING
;
2680 iwl3945_hw_txq_ctx_stop(priv
);
2681 iwl3945_hw_rxq_stop(priv
);
2683 /* Power-down device's busmaster DMA clocks */
2684 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2687 /* Stop the device, and put it in low power state */
2688 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2691 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2693 if (priv
->ibss_beacon
)
2694 dev_kfree_skb(priv
->ibss_beacon
);
2695 priv
->ibss_beacon
= NULL
;
2697 /* clear out any free frames */
2698 iwl3945_clear_free_frames(priv
);
2701 static void iwl3945_down(struct iwl_priv
*priv
)
2703 mutex_lock(&priv
->mutex
);
2704 __iwl3945_down(priv
);
2705 mutex_unlock(&priv
->mutex
);
2707 iwl3945_cancel_deferred_work(priv
);
2710 #define MAX_HW_RESTARTS 5
2712 static int __iwl3945_up(struct iwl_priv
*priv
)
2716 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2717 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2721 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2722 IWL_ERR(priv
, "ucode not available for device bring up\n");
2726 /* If platform's RF_KILL switch is NOT set to KILL */
2727 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2728 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2729 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2731 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2732 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2736 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2738 rc
= iwl3945_hw_nic_init(priv
);
2740 IWL_ERR(priv
, "Unable to int nic\n");
2744 /* make sure rfkill handshake bits are cleared */
2745 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2746 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2747 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2749 /* clear (again), then enable host interrupts */
2750 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2751 iwl_enable_interrupts(priv
);
2753 /* really make sure rfkill handshake bits are cleared */
2754 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2755 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2757 /* Copy original ucode data image from disk into backup cache.
2758 * This will be used to initialize the on-board processor's
2759 * data SRAM for a clean start when the runtime program first loads. */
2760 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2761 priv
->ucode_data
.len
);
2763 /* We return success when we resume from suspend and rf_kill is on. */
2764 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2767 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2769 iwl_clear_stations_table(priv
);
2771 /* load bootstrap state machine,
2772 * load bootstrap program into processor's memory,
2773 * prepare to load the "initialize" uCode */
2774 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2778 "Unable to set up bootstrap uCode: %d\n", rc
);
2782 /* start card; "initialize" will load runtime ucode */
2783 iwl3945_nic_start(priv
);
2785 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2790 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2791 __iwl3945_down(priv
);
2792 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2794 /* tried to restart and config the device for as long as our
2795 * patience could withstand */
2796 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2801 /*****************************************************************************
2803 * Workqueue callbacks
2805 *****************************************************************************/
2807 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2809 struct iwl_priv
*priv
=
2810 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2812 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2815 mutex_lock(&priv
->mutex
);
2816 iwl3945_init_alive_start(priv
);
2817 mutex_unlock(&priv
->mutex
);
2820 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2822 struct iwl_priv
*priv
=
2823 container_of(data
, struct iwl_priv
, alive_start
.work
);
2825 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2828 mutex_lock(&priv
->mutex
);
2829 iwl3945_alive_start(priv
);
2830 mutex_unlock(&priv
->mutex
);
2834 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2835 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2836 * *is* readable even when device has been SW_RESET into low power mode
2837 * (e.g. during RF KILL).
2839 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2841 struct iwl_priv
*priv
=
2842 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2843 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2844 bool new_rfkill
= !(iwl_read32(priv
, CSR_GP_CNTRL
)
2845 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2847 if (new_rfkill
!= old_rfkill
) {
2849 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2851 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2853 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, new_rfkill
);
2855 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
2856 new_rfkill
? "disable radio" : "enable radio");
2859 /* Keep this running, even if radio now enabled. This will be
2860 * cancelled in mac_start() if system decides to start again */
2861 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2862 round_jiffies_relative(2 * HZ
));
2866 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2867 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2869 struct iwl_priv
*priv
=
2870 container_of(data
, struct iwl_priv
, request_scan
);
2871 struct iwl_host_cmd cmd
= {
2872 .id
= REPLY_SCAN_CMD
,
2873 .len
= sizeof(struct iwl3945_scan_cmd
),
2874 .flags
= CMD_SIZE_HUGE
,
2877 struct iwl3945_scan_cmd
*scan
;
2878 struct ieee80211_conf
*conf
= NULL
;
2880 enum ieee80211_band band
;
2881 bool is_active
= false;
2883 conf
= ieee80211_get_hw_conf(priv
->hw
);
2885 mutex_lock(&priv
->mutex
);
2887 cancel_delayed_work(&priv
->scan_check
);
2889 if (!iwl_is_ready(priv
)) {
2890 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2894 /* Make sure the scan wasn't canceled before this queued work
2895 * was given the chance to run... */
2896 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2899 /* This should never be called or scheduled if there is currently
2900 * a scan active in the hardware. */
2901 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2902 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2903 "Ignoring second request.\n");
2908 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2909 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2913 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2915 "Scan request while abort pending. Queuing.\n");
2919 if (iwl_is_rfkill(priv
)) {
2920 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2924 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2926 "Scan request while uninitialized. Queuing.\n");
2930 if (!priv
->scan_bands
) {
2931 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2936 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2937 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2944 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2946 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2947 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2949 if (iwl_is_associated(priv
)) {
2952 u32 suspend_time
= 100;
2953 u32 scan_suspend_time
= 100;
2954 unsigned long flags
;
2956 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2958 spin_lock_irqsave(&priv
->lock
, flags
);
2959 interval
= priv
->beacon_int
;
2960 spin_unlock_irqrestore(&priv
->lock
, flags
);
2962 scan
->suspend_time
= 0;
2963 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2965 interval
= suspend_time
;
2967 * suspend time format:
2968 * 0-19: beacon interval in usec (time before exec.)
2970 * 24-31: number of beacons (suspend between channels)
2973 extra
= (suspend_time
/ interval
) << 24;
2974 scan_suspend_time
= 0xFF0FFFFF &
2975 (extra
| ((suspend_time
% interval
) * 1024));
2977 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2978 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2979 scan_suspend_time
, interval
);
2982 if (priv
->scan_request
->n_ssids
) {
2984 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2985 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2986 /* always does wildcard anyway */
2987 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2989 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2990 scan
->direct_scan
[p
].len
=
2991 priv
->scan_request
->ssids
[i
].ssid_len
;
2992 memcpy(scan
->direct_scan
[p
].ssid
,
2993 priv
->scan_request
->ssids
[i
].ssid
,
2994 priv
->scan_request
->ssids
[i
].ssid_len
);
3000 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
3002 /* We don't build a direct scan probe request; the uCode will do
3003 * that based on the direct_mask added to each channel entry */
3004 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
3005 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
3006 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
3008 /* flags + rate selection */
3010 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
3011 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
3012 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
3013 scan
->good_CRC_th
= 0;
3014 band
= IEEE80211_BAND_2GHZ
;
3015 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
3016 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
3018 * If active scaning is requested but a certain channel
3019 * is marked passive, we can do active scanning if we
3020 * detect transmissions.
3022 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
3023 band
= IEEE80211_BAND_5GHZ
;
3025 IWL_WARN(priv
, "Invalid scan band count\n");
3029 scan
->tx_cmd
.len
= cpu_to_le16(
3030 iwl_fill_probe_req(priv
,
3031 (struct ieee80211_mgmt
*)scan
->data
,
3032 priv
->scan_request
->ie
,
3033 priv
->scan_request
->ie_len
,
3034 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
3036 /* select Rx antennas */
3037 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
3039 if (iwl_is_monitor_mode(priv
))
3040 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
3042 scan
->channel_count
=
3043 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
3044 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
3046 if (scan
->channel_count
== 0) {
3047 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
3051 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
3052 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
3054 scan
->len
= cpu_to_le16(cmd
.len
);
3056 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3057 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3061 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
3062 IWL_SCAN_CHECK_WATCHDOG
);
3064 mutex_unlock(&priv
->mutex
);
3068 /* can not perform scan make sure we clear scanning
3069 * bits from status so next scan request can be performed.
3070 * if we dont clear scanning status bit here all next scan
3073 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3074 clear_bit(STATUS_SCANNING
, &priv
->status
);
3076 /* inform mac80211 scan aborted */
3077 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3078 mutex_unlock(&priv
->mutex
);
3081 static void iwl3945_bg_up(struct work_struct
*data
)
3083 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
3085 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3088 mutex_lock(&priv
->mutex
);
3090 mutex_unlock(&priv
->mutex
);
3093 static void iwl3945_bg_restart(struct work_struct
*data
)
3095 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3097 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3100 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3101 mutex_lock(&priv
->mutex
);
3104 mutex_unlock(&priv
->mutex
);
3106 ieee80211_restart_hw(priv
->hw
);
3109 queue_work(priv
->workqueue
, &priv
->up
);
3113 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3115 struct iwl_priv
*priv
=
3116 container_of(data
, struct iwl_priv
, rx_replenish
);
3118 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3121 mutex_lock(&priv
->mutex
);
3122 iwl3945_rx_replenish(priv
);
3123 mutex_unlock(&priv
->mutex
);
3126 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3128 void iwl3945_post_associate(struct iwl_priv
*priv
)
3131 struct ieee80211_conf
*conf
= NULL
;
3133 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3134 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3139 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3140 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3142 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3145 if (!priv
->vif
|| !priv
->is_open
)
3148 iwl_scan_cancel_timeout(priv
, 200);
3150 conf
= ieee80211_get_hw_conf(priv
->hw
);
3152 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3153 iwlcore_commit_rxon(priv
);
3155 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3156 iwl_setup_rxon_timing(priv
);
3157 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3158 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3160 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3161 "Attempting to continue.\n");
3163 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3165 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3167 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3168 priv
->assoc_id
, priv
->beacon_int
);
3170 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3171 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3173 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3175 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3176 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3177 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3179 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3181 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3182 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3186 iwlcore_commit_rxon(priv
);
3188 switch (priv
->iw_mode
) {
3189 case NL80211_IFTYPE_STATION
:
3190 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3193 case NL80211_IFTYPE_ADHOC
:
3196 iwl_add_station(priv
, priv
->bssid
, 0, CMD_SYNC
, NULL
);
3197 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3198 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3199 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3201 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3202 iwl3945_send_beacon_cmd(priv
);
3207 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3208 __func__
, priv
->iw_mode
);
3212 iwl_activate_qos(priv
, 0);
3214 /* we have just associated, don't start scan too early */
3215 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3218 /*****************************************************************************
3220 * mac80211 entry point functions
3222 *****************************************************************************/
3224 #define UCODE_READY_TIMEOUT (2 * HZ)
3226 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3228 struct iwl_priv
*priv
= hw
->priv
;
3231 IWL_DEBUG_MAC80211(priv
, "enter\n");
3233 /* we should be verifying the device is ready to be opened */
3234 mutex_lock(&priv
->mutex
);
3236 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3237 * ucode filename and max sizes are card-specific. */
3239 if (!priv
->ucode_code
.len
) {
3240 ret
= iwl3945_read_ucode(priv
);
3242 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3243 mutex_unlock(&priv
->mutex
);
3244 goto out_release_irq
;
3248 ret
= __iwl3945_up(priv
);
3250 mutex_unlock(&priv
->mutex
);
3253 goto out_release_irq
;
3255 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3257 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3258 * mac80211 will not be run successfully. */
3259 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3260 test_bit(STATUS_READY
, &priv
->status
),
3261 UCODE_READY_TIMEOUT
);
3263 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3265 "Wait for START_ALIVE timeout after %dms.\n",
3266 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3268 goto out_release_irq
;
3272 /* ucode is running and will send rfkill notifications,
3273 * no need to poll the killswitch state anymore */
3274 cancel_delayed_work(&priv
->rfkill_poll
);
3276 iwl_led_start(priv
);
3279 IWL_DEBUG_MAC80211(priv
, "leave\n");
3284 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3288 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3290 struct iwl_priv
*priv
= hw
->priv
;
3292 IWL_DEBUG_MAC80211(priv
, "enter\n");
3294 if (!priv
->is_open
) {
3295 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3301 if (iwl_is_ready_rf(priv
)) {
3302 /* stop mac, cancel any scan request and clear
3303 * RXON_FILTER_ASSOC_MSK BIT
3305 mutex_lock(&priv
->mutex
);
3306 iwl_scan_cancel_timeout(priv
, 100);
3307 mutex_unlock(&priv
->mutex
);
3312 flush_workqueue(priv
->workqueue
);
3314 /* start polling the killswitch state again */
3315 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3316 round_jiffies_relative(2 * HZ
));
3318 IWL_DEBUG_MAC80211(priv
, "leave\n");
3321 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3323 struct iwl_priv
*priv
= hw
->priv
;
3325 IWL_DEBUG_MAC80211(priv
, "enter\n");
3327 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3328 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3330 if (iwl3945_tx_skb(priv
, skb
))
3331 dev_kfree_skb_any(skb
);
3333 IWL_DEBUG_MAC80211(priv
, "leave\n");
3334 return NETDEV_TX_OK
;
3337 void iwl3945_config_ap(struct iwl_priv
*priv
)
3341 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3344 /* The following should be done only at AP bring up */
3345 if (!(iwl_is_associated(priv
))) {
3347 /* RXON - unassoc (to set timing command) */
3348 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3349 iwlcore_commit_rxon(priv
);
3352 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3353 iwl_setup_rxon_timing(priv
);
3354 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3355 sizeof(priv
->rxon_timing
),
3356 &priv
->rxon_timing
);
3358 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3359 "Attempting to continue.\n");
3361 /* FIXME: what should be the assoc_id for AP? */
3362 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3363 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3364 priv
->staging_rxon
.flags
|=
3365 RXON_FLG_SHORT_PREAMBLE_MSK
;
3367 priv
->staging_rxon
.flags
&=
3368 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3370 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3371 if (priv
->assoc_capability
&
3372 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3373 priv
->staging_rxon
.flags
|=
3374 RXON_FLG_SHORT_SLOT_MSK
;
3376 priv
->staging_rxon
.flags
&=
3377 ~RXON_FLG_SHORT_SLOT_MSK
;
3379 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3380 priv
->staging_rxon
.flags
&=
3381 ~RXON_FLG_SHORT_SLOT_MSK
;
3383 /* restore RXON assoc */
3384 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3385 iwlcore_commit_rxon(priv
);
3386 iwl_add_station(priv
, iwl_bcast_addr
, 0, CMD_SYNC
, NULL
);
3388 iwl3945_send_beacon_cmd(priv
);
3390 /* FIXME - we need to add code here to detect a totally new
3391 * configuration, reset the AP, unassoc, rxon timing, assoc,
3392 * clear sta table, add BCAST sta... */
3395 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3396 struct ieee80211_vif
*vif
,
3397 struct ieee80211_sta
*sta
,
3398 struct ieee80211_key_conf
*key
)
3400 struct iwl_priv
*priv
= hw
->priv
;
3403 u8 sta_id
= IWL_INVALID_STATION
;
3406 IWL_DEBUG_MAC80211(priv
, "enter\n");
3408 if (iwl3945_mod_params
.sw_crypto
) {
3409 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3413 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3414 static_key
= !iwl_is_associated(priv
);
3417 sta_id
= iwl_find_station(priv
, addr
);
3418 if (sta_id
== IWL_INVALID_STATION
) {
3419 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3425 mutex_lock(&priv
->mutex
);
3426 iwl_scan_cancel_timeout(priv
, 100);
3427 mutex_unlock(&priv
->mutex
);
3432 ret
= iwl3945_set_static_key(priv
, key
);
3434 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3435 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3439 ret
= iwl3945_remove_static_key(priv
);
3441 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3442 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3448 IWL_DEBUG_MAC80211(priv
, "leave\n");
3453 /*****************************************************************************
3457 *****************************************************************************/
3459 #ifdef CONFIG_IWLWIFI_DEBUG
3462 * The following adds a new attribute to the sysfs representation
3463 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3464 * used for controlling the debug level.
3466 * See the level definitions in iwl for details.
3468 * The debug_level being managed using sysfs below is a per device debug
3469 * level that is used instead of the global debug level if it (the per
3470 * device debug level) is set.
3472 static ssize_t
show_debug_level(struct device
*d
,
3473 struct device_attribute
*attr
, char *buf
)
3475 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3476 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3478 static ssize_t
store_debug_level(struct device
*d
,
3479 struct device_attribute
*attr
,
3480 const char *buf
, size_t count
)
3482 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3486 ret
= strict_strtoul(buf
, 0, &val
);
3488 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3490 priv
->debug_level
= val
;
3491 if (iwl_alloc_traffic_mem(priv
))
3493 "Not enough memory to generate traffic log\n");
3495 return strnlen(buf
, count
);
3498 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3499 show_debug_level
, store_debug_level
);
3501 #endif /* CONFIG_IWLWIFI_DEBUG */
3503 static ssize_t
show_temperature(struct device
*d
,
3504 struct device_attribute
*attr
, char *buf
)
3506 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3508 if (!iwl_is_alive(priv
))
3511 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3514 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3516 static ssize_t
show_tx_power(struct device
*d
,
3517 struct device_attribute
*attr
, char *buf
)
3519 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3520 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3523 static ssize_t
store_tx_power(struct device
*d
,
3524 struct device_attribute
*attr
,
3525 const char *buf
, size_t count
)
3527 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3528 char *p
= (char *)buf
;
3531 val
= simple_strtoul(p
, &p
, 10);
3533 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3535 iwl3945_hw_reg_set_txpower(priv
, val
);
3540 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3542 static ssize_t
show_flags(struct device
*d
,
3543 struct device_attribute
*attr
, char *buf
)
3545 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3547 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3550 static ssize_t
store_flags(struct device
*d
,
3551 struct device_attribute
*attr
,
3552 const char *buf
, size_t count
)
3554 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3555 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3557 mutex_lock(&priv
->mutex
);
3558 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3559 /* Cancel any currently running scans... */
3560 if (iwl_scan_cancel_timeout(priv
, 100))
3561 IWL_WARN(priv
, "Could not cancel scan.\n");
3563 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3565 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3566 iwlcore_commit_rxon(priv
);
3569 mutex_unlock(&priv
->mutex
);
3574 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3576 static ssize_t
show_filter_flags(struct device
*d
,
3577 struct device_attribute
*attr
, char *buf
)
3579 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3581 return sprintf(buf
, "0x%04X\n",
3582 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3585 static ssize_t
store_filter_flags(struct device
*d
,
3586 struct device_attribute
*attr
,
3587 const char *buf
, size_t count
)
3589 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3590 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3592 mutex_lock(&priv
->mutex
);
3593 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3594 /* Cancel any currently running scans... */
3595 if (iwl_scan_cancel_timeout(priv
, 100))
3596 IWL_WARN(priv
, "Could not cancel scan.\n");
3598 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3599 "0x%04X\n", filter_flags
);
3600 priv
->staging_rxon
.filter_flags
=
3601 cpu_to_le32(filter_flags
);
3602 iwlcore_commit_rxon(priv
);
3605 mutex_unlock(&priv
->mutex
);
3610 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3611 store_filter_flags
);
3613 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3615 static ssize_t
show_measurement(struct device
*d
,
3616 struct device_attribute
*attr
, char *buf
)
3618 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3619 struct iwl_spectrum_notification measure_report
;
3620 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3621 u8
*data
= (u8
*)&measure_report
;
3622 unsigned long flags
;
3624 spin_lock_irqsave(&priv
->lock
, flags
);
3625 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3626 spin_unlock_irqrestore(&priv
->lock
, flags
);
3629 memcpy(&measure_report
, &priv
->measure_report
, size
);
3630 priv
->measurement_status
= 0;
3631 spin_unlock_irqrestore(&priv
->lock
, flags
);
3633 while (size
&& (PAGE_SIZE
- len
)) {
3634 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3635 PAGE_SIZE
- len
, 1);
3637 if (PAGE_SIZE
- len
)
3641 size
-= min(size
, 16U);
3647 static ssize_t
store_measurement(struct device
*d
,
3648 struct device_attribute
*attr
,
3649 const char *buf
, size_t count
)
3651 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3652 struct ieee80211_measurement_params params
= {
3653 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3654 .start_time
= cpu_to_le64(priv
->last_tsf
),
3655 .duration
= cpu_to_le16(1),
3657 u8 type
= IWL_MEASURE_BASIC
;
3663 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3664 channel
= simple_strtoul(p
, NULL
, 0);
3666 params
.channel
= channel
;
3669 while (*p
&& *p
!= ' ')
3672 type
= simple_strtoul(p
+ 1, NULL
, 0);
3675 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3676 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3677 iwl3945_get_measurement(priv
, ¶ms
, type
);
3682 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3683 show_measurement
, store_measurement
);
3684 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3686 static ssize_t
store_retry_rate(struct device
*d
,
3687 struct device_attribute
*attr
,
3688 const char *buf
, size_t count
)
3690 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3692 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3693 if (priv
->retry_rate
<= 0)
3694 priv
->retry_rate
= 1;
3699 static ssize_t
show_retry_rate(struct device
*d
,
3700 struct device_attribute
*attr
, char *buf
)
3702 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3703 return sprintf(buf
, "%d", priv
->retry_rate
);
3706 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3710 static ssize_t
show_channels(struct device
*d
,
3711 struct device_attribute
*attr
, char *buf
)
3713 /* all this shit doesn't belong into sysfs anyway */
3717 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3719 static ssize_t
show_statistics(struct device
*d
,
3720 struct device_attribute
*attr
, char *buf
)
3722 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3723 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3724 u32 len
= 0, ofs
= 0;
3725 u8
*data
= (u8
*)&priv
->statistics_39
;
3728 if (!iwl_is_alive(priv
))
3731 mutex_lock(&priv
->mutex
);
3732 rc
= iwl_send_statistics_request(priv
, CMD_SYNC
, false);
3733 mutex_unlock(&priv
->mutex
);
3737 "Error sending statistics request: 0x%08X\n", rc
);
3741 while (size
&& (PAGE_SIZE
- len
)) {
3742 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3743 PAGE_SIZE
- len
, 1);
3745 if (PAGE_SIZE
- len
)
3749 size
-= min(size
, 16U);
3755 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3757 static ssize_t
show_antenna(struct device
*d
,
3758 struct device_attribute
*attr
, char *buf
)
3760 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3762 if (!iwl_is_alive(priv
))
3765 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3768 static ssize_t
store_antenna(struct device
*d
,
3769 struct device_attribute
*attr
,
3770 const char *buf
, size_t count
)
3772 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3778 if (sscanf(buf
, "%1i", &ant
) != 1) {
3779 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3783 if ((ant
>= 0) && (ant
<= 2)) {
3784 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3785 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3787 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3793 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3795 static ssize_t
show_status(struct device
*d
,
3796 struct device_attribute
*attr
, char *buf
)
3798 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3799 if (!iwl_is_alive(priv
))
3801 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3804 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3806 static ssize_t
dump_error_log(struct device
*d
,
3807 struct device_attribute
*attr
,
3808 const char *buf
, size_t count
)
3810 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3811 char *p
= (char *)buf
;
3814 iwl3945_dump_nic_error_log(priv
);
3816 return strnlen(buf
, count
);
3819 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3821 /*****************************************************************************
3823 * driver setup and tear down
3825 *****************************************************************************/
3827 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3829 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3831 init_waitqueue_head(&priv
->wait_command_queue
);
3833 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
3834 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3835 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3836 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3837 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3838 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3839 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3840 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3841 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3842 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3843 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3845 iwl3945_hw_setup_deferred_work(priv
);
3847 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3848 iwl3945_irq_tasklet
, (unsigned long)priv
);
3851 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3853 iwl3945_hw_cancel_deferred_work(priv
);
3855 cancel_delayed_work_sync(&priv
->init_alive_start
);
3856 cancel_delayed_work(&priv
->scan_check
);
3857 cancel_delayed_work(&priv
->alive_start
);
3858 cancel_work_sync(&priv
->beacon_update
);
3861 static struct attribute
*iwl3945_sysfs_entries
[] = {
3862 &dev_attr_antenna
.attr
,
3863 &dev_attr_channels
.attr
,
3864 &dev_attr_dump_errors
.attr
,
3865 &dev_attr_flags
.attr
,
3866 &dev_attr_filter_flags
.attr
,
3867 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3868 &dev_attr_measurement
.attr
,
3870 &dev_attr_retry_rate
.attr
,
3871 &dev_attr_statistics
.attr
,
3872 &dev_attr_status
.attr
,
3873 &dev_attr_temperature
.attr
,
3874 &dev_attr_tx_power
.attr
,
3875 #ifdef CONFIG_IWLWIFI_DEBUG
3876 &dev_attr_debug_level
.attr
,
3881 static struct attribute_group iwl3945_attribute_group
= {
3882 .name
= NULL
, /* put in device directory */
3883 .attrs
= iwl3945_sysfs_entries
,
3886 static struct ieee80211_ops iwl3945_hw_ops
= {
3887 .tx
= iwl3945_mac_tx
,
3888 .start
= iwl3945_mac_start
,
3889 .stop
= iwl3945_mac_stop
,
3890 .add_interface
= iwl_mac_add_interface
,
3891 .remove_interface
= iwl_mac_remove_interface
,
3892 .config
= iwl_mac_config
,
3893 .configure_filter
= iwl_configure_filter
,
3894 .set_key
= iwl3945_mac_set_key
,
3895 .get_tx_stats
= iwl_mac_get_tx_stats
,
3896 .conf_tx
= iwl_mac_conf_tx
,
3897 .reset_tsf
= iwl_mac_reset_tsf
,
3898 .bss_info_changed
= iwl_bss_info_changed
,
3899 .hw_scan
= iwl_mac_hw_scan
3902 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3905 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3907 priv
->retry_rate
= 1;
3908 priv
->ibss_beacon
= NULL
;
3910 spin_lock_init(&priv
->sta_lock
);
3911 spin_lock_init(&priv
->hcmd_lock
);
3913 INIT_LIST_HEAD(&priv
->free_frames
);
3915 mutex_init(&priv
->mutex
);
3917 /* Clear the driver's (not device's) station table */
3918 iwl_clear_stations_table(priv
);
3920 priv
->ieee_channels
= NULL
;
3921 priv
->ieee_rates
= NULL
;
3922 priv
->band
= IEEE80211_BAND_2GHZ
;
3924 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3926 iwl_reset_qos(priv
);
3928 priv
->qos_data
.qos_active
= 0;
3929 priv
->qos_data
.qos_cap
.val
= 0;
3931 priv
->rates_mask
= IWL_RATES_MASK
;
3932 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3934 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3935 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3940 ret
= iwl_init_channel_map(priv
);
3942 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3946 /* Set up txpower settings in driver for all channels */
3947 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3949 goto err_free_channel_map
;
3952 ret
= iwlcore_init_geos(priv
);
3954 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3955 goto err_free_channel_map
;
3957 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3961 err_free_channel_map
:
3962 iwl_free_channel_map(priv
);
3967 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3970 struct ieee80211_hw
*hw
= priv
->hw
;
3972 hw
->rate_control_algorithm
= "iwl-3945-rs";
3973 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3975 /* Tell mac80211 our characteristics */
3976 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3977 IEEE80211_HW_NOISE_DBM
|
3978 IEEE80211_HW_SPECTRUM_MGMT
;
3980 if (!priv
->cfg
->broken_powersave
)
3981 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
3982 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3984 hw
->wiphy
->interface_modes
=
3985 BIT(NL80211_IFTYPE_STATION
) |
3986 BIT(NL80211_IFTYPE_ADHOC
);
3988 hw
->wiphy
->flags
|= WIPHY_FLAG_STRICT_REGULATORY
|
3989 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
3991 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3992 /* we create the 802.11 header and a zero-length SSID element */
3993 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
3995 /* Default value; 4 EDCA QOS priorities */
3998 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3999 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
4000 &priv
->bands
[IEEE80211_BAND_2GHZ
];
4002 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
4003 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
4004 &priv
->bands
[IEEE80211_BAND_5GHZ
];
4006 ret
= ieee80211_register_hw(priv
->hw
);
4008 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
4011 priv
->mac80211_registered
= 1;
4016 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4019 struct iwl_priv
*priv
;
4020 struct ieee80211_hw
*hw
;
4021 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
4022 struct iwl3945_eeprom
*eeprom
;
4023 unsigned long flags
;
4025 /***********************
4026 * 1. Allocating HW data
4027 * ********************/
4029 /* mac80211 allocates memory for this device instance, including
4030 * space for this driver's private structure */
4031 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
4033 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
4038 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
4041 * Disabling hardware scan means that mac80211 will perform scans
4042 * "the hard way", rather than using device's scan.
4044 if (iwl3945_mod_params
.disable_hw_scan
) {
4045 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
4046 iwl3945_hw_ops
.hw_scan
= NULL
;
4050 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
4052 priv
->pci_dev
= pdev
;
4053 priv
->inta_mask
= CSR_INI_SET_MASK
;
4055 #ifdef CONFIG_IWLWIFI_DEBUG
4056 atomic_set(&priv
->restrict_refcnt
, 0);
4058 if (iwl_alloc_traffic_mem(priv
))
4059 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
4061 /***************************
4062 * 2. Initializing PCI bus
4063 * *************************/
4064 if (pci_enable_device(pdev
)) {
4066 goto out_ieee80211_free_hw
;
4069 pci_set_master(pdev
);
4071 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4073 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4075 IWL_WARN(priv
, "No suitable DMA available.\n");
4076 goto out_pci_disable_device
;
4079 pci_set_drvdata(pdev
, priv
);
4080 err
= pci_request_regions(pdev
, DRV_NAME
);
4082 goto out_pci_disable_device
;
4084 /***********************
4085 * 3. Read REV Register
4086 * ********************/
4087 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4088 if (!priv
->hw_base
) {
4090 goto out_pci_release_regions
;
4093 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4094 (unsigned long long) pci_resource_len(pdev
, 0));
4095 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4097 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4098 * PCI Tx retries from interfering with C3 CPU state */
4099 pci_write_config_byte(pdev
, 0x41, 0x00);
4101 /* these spin locks will be used in apm_ops.init and EEPROM access
4102 * we should init now
4104 spin_lock_init(&priv
->reg_lock
);
4105 spin_lock_init(&priv
->lock
);
4107 /***********************
4109 * ********************/
4111 /* Read the EEPROM */
4112 err
= iwl_eeprom_init(priv
);
4114 IWL_ERR(priv
, "Unable to init EEPROM\n");
4117 /* MAC Address location in EEPROM same for 3945/4965 */
4118 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4119 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4120 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4121 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4123 /***********************
4124 * 5. Setup HW Constants
4125 * ********************/
4126 /* Device-specific setup */
4127 if (iwl3945_hw_set_hw_params(priv
)) {
4128 IWL_ERR(priv
, "failed to set hw settings\n");
4129 goto out_eeprom_free
;
4132 /***********************
4134 * ********************/
4136 err
= iwl3945_init_drv(priv
);
4138 IWL_ERR(priv
, "initializing driver failed\n");
4139 goto out_unset_hw_params
;
4142 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4145 /***********************
4147 * ********************/
4149 spin_lock_irqsave(&priv
->lock
, flags
);
4150 iwl_disable_interrupts(priv
);
4151 spin_unlock_irqrestore(&priv
->lock
, flags
);
4153 pci_enable_msi(priv
->pci_dev
);
4155 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4156 IRQF_SHARED
, DRV_NAME
, priv
);
4158 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4159 goto out_disable_msi
;
4162 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4164 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4165 goto out_release_irq
;
4168 iwl_set_rxon_channel(priv
,
4169 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4170 iwl3945_setup_deferred_work(priv
);
4171 iwl3945_setup_rx_handlers(priv
);
4172 iwl_power_initialize(priv
);
4174 /*********************************
4175 * 8. Setup and Register mac80211
4176 * *******************************/
4178 iwl_enable_interrupts(priv
);
4180 err
= iwl3945_setup_mac(priv
);
4182 goto out_remove_sysfs
;
4184 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4186 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4188 /* Start monitoring the killswitch */
4189 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4195 destroy_workqueue(priv
->workqueue
);
4196 priv
->workqueue
= NULL
;
4197 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4199 free_irq(priv
->pci_dev
->irq
, priv
);
4201 pci_disable_msi(priv
->pci_dev
);
4202 iwlcore_free_geos(priv
);
4203 iwl_free_channel_map(priv
);
4204 out_unset_hw_params
:
4205 iwl3945_unset_hw_params(priv
);
4207 iwl_eeprom_free(priv
);
4209 pci_iounmap(pdev
, priv
->hw_base
);
4210 out_pci_release_regions
:
4211 pci_release_regions(pdev
);
4212 out_pci_disable_device
:
4213 pci_set_drvdata(pdev
, NULL
);
4214 pci_disable_device(pdev
);
4215 out_ieee80211_free_hw
:
4216 iwl_free_traffic_mem(priv
);
4217 ieee80211_free_hw(priv
->hw
);
4222 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4224 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4225 unsigned long flags
;
4230 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4232 iwl_dbgfs_unregister(priv
);
4234 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4236 if (priv
->mac80211_registered
) {
4237 ieee80211_unregister_hw(priv
->hw
);
4238 priv
->mac80211_registered
= 0;
4244 * Make sure device is reset to low power before unloading driver.
4245 * This may be redundant with iwl_down(), but there are paths to
4246 * run iwl_down() without calling apm_ops.stop(), and there are
4247 * paths to avoid running iwl_down() at all before leaving driver.
4248 * This (inexpensive) call *makes sure* device is reset.
4250 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
4252 /* make sure we flush any pending irq or
4253 * tasklet for the driver
4255 spin_lock_irqsave(&priv
->lock
, flags
);
4256 iwl_disable_interrupts(priv
);
4257 spin_unlock_irqrestore(&priv
->lock
, flags
);
4259 iwl_synchronize_irq(priv
);
4261 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4263 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4265 iwl3945_dealloc_ucode_pci(priv
);
4268 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4269 iwl3945_hw_txq_ctx_free(priv
);
4271 iwl3945_unset_hw_params(priv
);
4272 iwl_clear_stations_table(priv
);
4274 /*netif_stop_queue(dev); */
4275 flush_workqueue(priv
->workqueue
);
4277 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4278 * priv->workqueue... so we can't take down the workqueue
4280 destroy_workqueue(priv
->workqueue
);
4281 priv
->workqueue
= NULL
;
4282 iwl_free_traffic_mem(priv
);
4284 free_irq(pdev
->irq
, priv
);
4285 pci_disable_msi(pdev
);
4287 pci_iounmap(pdev
, priv
->hw_base
);
4288 pci_release_regions(pdev
);
4289 pci_disable_device(pdev
);
4290 pci_set_drvdata(pdev
, NULL
);
4292 iwl_free_channel_map(priv
);
4293 iwlcore_free_geos(priv
);
4295 if (priv
->ibss_beacon
)
4296 dev_kfree_skb(priv
->ibss_beacon
);
4298 ieee80211_free_hw(priv
->hw
);
4302 /*****************************************************************************
4304 * driver and module entry point
4306 *****************************************************************************/
4308 static struct pci_driver iwl3945_driver
= {
4310 .id_table
= iwl3945_hw_card_ids
,
4311 .probe
= iwl3945_pci_probe
,
4312 .remove
= __devexit_p(iwl3945_pci_remove
),
4314 .suspend
= iwl_pci_suspend
,
4315 .resume
= iwl_pci_resume
,
4319 static int __init
iwl3945_init(void)
4323 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4324 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4326 ret
= iwl3945_rate_control_register();
4328 printk(KERN_ERR DRV_NAME
4329 "Unable to register rate control algorithm: %d\n", ret
);
4333 ret
= pci_register_driver(&iwl3945_driver
);
4335 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4336 goto error_register
;
4342 iwl3945_rate_control_unregister();
4346 static void __exit
iwl3945_exit(void)
4348 pci_unregister_driver(&iwl3945_driver
);
4349 iwl3945_rate_control_unregister();
4352 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4354 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, S_IRUGO
);
4355 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4356 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, S_IRUGO
);
4357 MODULE_PARM_DESC(swcrypto
,
4358 "using software crypto (default 1 [software])\n");
4359 #ifdef CONFIG_IWLWIFI_DEBUG
4360 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4361 MODULE_PARM_DESC(debug
, "debug output mask");
4363 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
,
4365 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4366 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, S_IRUGO
);
4367 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4369 module_exit(iwl3945_exit
);
4370 module_init(iwl3945_init
);