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 IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
86 MODULE_VERSION(DRV_VERSION
);
87 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params
= {
94 /* the rest are 0 by default */
98 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
99 * @priv: eeprom and antenna fields are used to determine antenna flags
101 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
102 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
104 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
105 * IWL_ANTENNA_MAIN - Force MAIN antenna
106 * IWL_ANTENNA_AUX - Force AUX antenna
108 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
110 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
112 switch (iwl3945_mod_params
.antenna
) {
113 case IWL_ANTENNA_DIVERSITY
:
116 case IWL_ANTENNA_MAIN
:
117 if (eeprom
->antenna_switch_type
)
118 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
119 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
121 case IWL_ANTENNA_AUX
:
122 if (eeprom
->antenna_switch_type
)
123 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
124 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
127 /* bad antenna selector value */
128 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
129 iwl3945_mod_params
.antenna
);
131 return 0; /* "diversity" is default if error */
134 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
135 struct ieee80211_key_conf
*keyconf
,
139 __le16 key_flags
= 0;
142 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
143 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
145 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
146 key_flags
|= STA_KEY_MULTICAST_MSK
;
148 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
149 keyconf
->hw_key_idx
= keyconf
->keyidx
;
150 key_flags
&= ~STA_KEY_FLG_INVALID
;
152 spin_lock_irqsave(&priv
->sta_lock
, flags
);
153 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
154 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
155 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
158 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
161 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
162 == STA_KEY_FLG_NO_ENC
)
163 priv
->stations
[sta_id
].sta
.key
.key_offset
=
164 iwl_get_free_ucode_key_index(priv
);
165 /* else, we are overriding an existing key => no need to allocated room
168 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
169 "no space for a new key");
171 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
172 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
173 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
175 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
177 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
179 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
184 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
185 struct ieee80211_key_conf
*keyconf
,
191 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
192 struct ieee80211_key_conf
*keyconf
,
198 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
202 spin_lock_irqsave(&priv
->sta_lock
, flags
);
203 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
204 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
205 sizeof(struct iwl4965_keyinfo
));
206 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
207 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
208 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
209 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
211 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
212 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, 0);
216 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
217 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
221 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
223 switch (keyconf
->alg
) {
225 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
228 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
231 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
234 IWL_ERR(priv
, "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
238 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
239 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
245 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
247 int ret
= -EOPNOTSUPP
;
252 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
253 struct ieee80211_key_conf
*key
)
255 if (key
->alg
== ALG_WEP
)
258 IWL_ERR(priv
, "Static key invalid: alg %d\n", key
->alg
);
262 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
264 struct list_head
*element
;
266 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
269 while (!list_empty(&priv
->free_frames
)) {
270 element
= priv
->free_frames
.next
;
272 kfree(list_entry(element
, struct iwl3945_frame
, list
));
273 priv
->frames_count
--;
276 if (priv
->frames_count
) {
277 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
279 priv
->frames_count
= 0;
283 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
285 struct iwl3945_frame
*frame
;
286 struct list_head
*element
;
287 if (list_empty(&priv
->free_frames
)) {
288 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
290 IWL_ERR(priv
, "Could not allocate frame!\n");
294 priv
->frames_count
++;
298 element
= priv
->free_frames
.next
;
300 return list_entry(element
, struct iwl3945_frame
, list
);
303 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
305 memset(frame
, 0, sizeof(*frame
));
306 list_add(&frame
->list
, &priv
->free_frames
);
309 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
310 struct ieee80211_hdr
*hdr
,
314 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
315 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
316 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
319 if (priv
->ibss_beacon
->len
> left
)
322 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
324 return priv
->ibss_beacon
->len
;
327 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
329 struct iwl3945_frame
*frame
;
330 unsigned int frame_size
;
334 frame
= iwl3945_get_free_frame(priv
);
337 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
342 rate
= iwl_rate_get_lowest_plcp(priv
);
344 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
346 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
349 iwl3945_free_frame(priv
, frame
);
354 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
356 if (priv
->shared_virt
)
357 pci_free_consistent(priv
->pci_dev
,
358 sizeof(struct iwl3945_shared
),
363 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
364 struct ieee80211_tx_info
*info
,
365 struct iwl_device_cmd
*cmd
,
366 struct sk_buff
*skb_frag
,
369 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
370 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
372 switch (keyinfo
->alg
) {
374 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
375 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
376 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
383 tx_cmd
->sec_ctl
= TX_CMD_SEC_WEP
|
384 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
386 if (keyinfo
->keylen
== 13)
387 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
389 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
391 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
392 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
396 IWL_ERR(priv
, "Unknown encode alg %d\n", keyinfo
->alg
);
402 * handle build REPLY_TX command notification.
404 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
405 struct iwl_device_cmd
*cmd
,
406 struct ieee80211_tx_info
*info
,
407 struct ieee80211_hdr
*hdr
, u8 std_id
)
409 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
410 __le32 tx_flags
= tx_cmd
->tx_flags
;
411 __le16 fc
= hdr
->frame_control
;
413 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
414 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
415 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
416 if (ieee80211_is_mgmt(fc
))
417 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
418 if (ieee80211_is_probe_resp(fc
) &&
419 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
420 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
422 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
423 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
426 tx_cmd
->sta_id
= std_id
;
427 if (ieee80211_has_morefrags(fc
))
428 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
430 if (ieee80211_is_data_qos(fc
)) {
431 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
432 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
433 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
435 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
438 priv
->cfg
->ops
->utils
->rts_tx_cmd_flag(info
, &tx_flags
);
440 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
441 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
443 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
444 if (ieee80211_is_mgmt(fc
)) {
445 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
446 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
448 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
450 tx_cmd
->timeout
.pm_frame_timeout
= 0;
453 tx_cmd
->driver_txop
= 0;
454 tx_cmd
->tx_flags
= tx_flags
;
455 tx_cmd
->next_frame_len
= 0;
459 * start REPLY_TX command process
461 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
463 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
464 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
465 struct iwl3945_tx_cmd
*tx_cmd
;
466 struct iwl_tx_queue
*txq
= NULL
;
467 struct iwl_queue
*q
= NULL
;
468 struct iwl_device_cmd
*out_cmd
;
469 struct iwl_cmd_meta
*out_meta
;
470 dma_addr_t phys_addr
;
471 dma_addr_t txcmd_phys
;
472 int txq_id
= skb_get_queue_mapping(skb
);
473 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
480 u8 wait_write_ptr
= 0;
485 spin_lock_irqsave(&priv
->lock
, flags
);
486 if (iwl_is_rfkill(priv
)) {
487 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
491 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
492 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
496 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
499 fc
= hdr
->frame_control
;
501 #ifdef CONFIG_IWLWIFI_DEBUG
502 if (ieee80211_is_auth(fc
))
503 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
504 else if (ieee80211_is_assoc_req(fc
))
505 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
506 else if (ieee80211_is_reassoc_req(fc
))
507 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
510 /* drop all non-injected data frame if we are not associated */
511 if (ieee80211_is_data(fc
) &&
512 !(info
->flags
& IEEE80211_TX_CTL_INJECTED
) &&
513 (!iwl_is_associated(priv
) ||
514 ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && !priv
->assoc_id
))) {
515 IWL_DEBUG_DROP(priv
, "Dropping - !iwl_is_associated\n");
519 spin_unlock_irqrestore(&priv
->lock
, flags
);
521 hdr_len
= ieee80211_hdrlen(fc
);
523 /* Find (or create) index into station table for destination station */
524 if (info
->flags
& IEEE80211_TX_CTL_INJECTED
)
525 sta_id
= priv
->hw_params
.bcast_sta_id
;
527 sta_id
= iwl_get_sta_id(priv
, hdr
);
528 if (sta_id
== IWL_INVALID_STATION
) {
529 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
534 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
536 if (ieee80211_is_data_qos(fc
)) {
537 qc
= ieee80211_get_qos_ctl(hdr
);
538 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
539 if (unlikely(tid
>= MAX_TID_COUNT
))
541 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
543 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
545 cpu_to_le16(IEEE80211_SCTL_FRAG
));
549 /* Descriptor for chosen Tx queue */
550 txq
= &priv
->txq
[txq_id
];
553 spin_lock_irqsave(&priv
->lock
, flags
);
555 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
557 /* Set up driver data for this TFD */
558 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
559 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
561 /* Init first empty entry in queue's array of Tx/cmd buffers */
562 out_cmd
= txq
->cmd
[idx
];
563 out_meta
= &txq
->meta
[idx
];
564 tx_cmd
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
565 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
566 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
569 * Set up the Tx-command (not MAC!) header.
570 * Store the chosen Tx queue and TFD index within the sequence field;
571 * after Tx, uCode's Tx response will return this value so driver can
572 * locate the frame within the tx queue and do post-tx processing.
574 out_cmd
->hdr
.cmd
= REPLY_TX
;
575 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
576 INDEX_TO_SEQ(q
->write_ptr
)));
578 /* Copy MAC header from skb into command buffer */
579 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
582 if (info
->control
.hw_key
)
583 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
585 /* TODO need this for burst mode later on */
586 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
588 /* set is_hcca to 0; it probably will never be implemented */
589 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
591 /* Total # bytes to be transmitted */
593 tx_cmd
->len
= cpu_to_le16(len
);
595 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
596 iwl_update_stats(priv
, true, fc
, len
);
597 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
598 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
600 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
601 txq
->need_update
= 1;
603 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
606 txq
->need_update
= 0;
609 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x \n",
610 le16_to_cpu(out_cmd
->hdr
.sequence
));
611 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd
->tx_flags
));
612 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
613 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx_cmd
->hdr
,
614 ieee80211_hdrlen(fc
));
617 * Use the first empty entry in this queue's command buffer array
618 * to contain the Tx command and MAC header concatenated together
619 * (payload data will be in another buffer).
620 * Size of this varies, due to varying MAC header length.
621 * If end is not dword aligned, we'll have 2 extra bytes at the end
622 * of the MAC header (device reads on dword boundaries).
623 * We'll tell device about this padding later.
625 len
= sizeof(struct iwl3945_tx_cmd
) +
626 sizeof(struct iwl_cmd_header
) + hdr_len
;
629 len
= (len
+ 3) & ~3;
636 /* Physical address of this Tx command's header (not MAC header!),
637 * within command buffer array. */
638 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
639 len
, PCI_DMA_TODEVICE
);
640 /* we do not map meta data ... so we can safely access address to
641 * provide to unmap command*/
642 pci_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
643 pci_unmap_len_set(out_meta
, len
, len
);
645 /* Add buffer containing Tx command and MAC(!) header to TFD's
647 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
648 txcmd_phys
, len
, 1, 0);
651 /* Set up TFD's 2nd entry to point directly to remainder of skb,
652 * if any (802.11 null frames have no payload). */
653 len
= skb
->len
- hdr_len
;
655 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
656 len
, PCI_DMA_TODEVICE
);
657 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
663 /* Tell device the write index *just past* this latest filled TFD */
664 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
665 rc
= iwl_txq_update_write_ptr(priv
, txq
);
666 spin_unlock_irqrestore(&priv
->lock
, flags
);
671 if ((iwl_queue_space(q
) < q
->high_mark
)
672 && priv
->mac80211_registered
) {
673 if (wait_write_ptr
) {
674 spin_lock_irqsave(&priv
->lock
, flags
);
675 txq
->need_update
= 1;
676 iwl_txq_update_write_ptr(priv
, txq
);
677 spin_unlock_irqrestore(&priv
->lock
, flags
);
680 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
686 spin_unlock_irqrestore(&priv
->lock
, flags
);
691 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
693 #include "iwl-spectrum.h"
695 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
696 #define BEACON_TIME_MASK_HIGH 0xFF000000
697 #define TIME_UNIT 1024
700 * extended beacon time format
701 * time in usec will be changed into a 32-bit value in 8:24 format
702 * the high 1 byte is the beacon counts
703 * the lower 3 bytes is the time in usec within one beacon interval
706 static u32
iwl3945_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
710 u32 interval
= beacon_interval
* 1024;
712 if (!interval
|| !usec
)
715 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
716 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
718 return (quot
<< 24) + rem
;
721 /* base is usually what we get from ucode with each received frame,
722 * the same as HW timer counter counting down
725 static __le32
iwl3945_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
727 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
728 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
729 u32 interval
= beacon_interval
* TIME_UNIT
;
730 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
731 (addon
& BEACON_TIME_MASK_HIGH
);
733 if (base_low
> addon_low
)
734 res
+= base_low
- addon_low
;
735 else if (base_low
< addon_low
) {
736 res
+= interval
+ base_low
- addon_low
;
741 return cpu_to_le32(res
);
744 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
745 struct ieee80211_measurement_params
*params
,
748 struct iwl_spectrum_cmd spectrum
;
749 struct iwl_rx_packet
*pkt
;
750 struct iwl_host_cmd cmd
= {
751 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
752 .data
= (void *)&spectrum
,
753 .flags
= CMD_WANT_SKB
,
755 u32 add_time
= le64_to_cpu(params
->start_time
);
757 int spectrum_resp_status
;
758 int duration
= le16_to_cpu(params
->duration
);
760 if (iwl_is_associated(priv
))
762 iwl3945_usecs_to_beacons(
763 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
764 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
766 memset(&spectrum
, 0, sizeof(spectrum
));
768 spectrum
.channel_count
= cpu_to_le16(1);
770 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
771 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
772 cmd
.len
= sizeof(spectrum
);
773 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
775 if (iwl_is_associated(priv
))
776 spectrum
.start_time
=
777 iwl3945_add_beacon_time(priv
->last_beacon_time
,
779 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
781 spectrum
.start_time
= 0;
783 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
784 spectrum
.channels
[0].channel
= params
->channel
;
785 spectrum
.channels
[0].type
= type
;
786 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
787 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
788 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
790 rc
= iwl_send_cmd_sync(priv
, &cmd
);
794 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
795 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
796 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
800 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
801 switch (spectrum_resp_status
) {
802 case 0: /* Command will be handled */
803 if (pkt
->u
.spectrum
.id
!= 0xff) {
804 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
806 priv
->measurement_status
&= ~MEASUREMENT_READY
;
808 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
812 case 1: /* Command will not be handled */
817 free_pages(cmd
.reply_page
, priv
->hw_params
.rx_page_order
);
823 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
824 struct iwl_rx_mem_buffer
*rxb
)
826 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
827 struct iwl_alive_resp
*palive
;
828 struct delayed_work
*pwork
;
830 palive
= &pkt
->u
.alive_frame
;
832 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
834 palive
->is_valid
, palive
->ver_type
,
835 palive
->ver_subtype
);
837 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
838 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
839 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
840 sizeof(struct iwl_alive_resp
));
841 pwork
= &priv
->init_alive_start
;
843 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
844 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
845 sizeof(struct iwl_alive_resp
));
846 pwork
= &priv
->alive_start
;
847 iwl3945_disable_events(priv
);
850 /* We delay the ALIVE response by 5ms to
851 * give the HW RF Kill time to activate... */
852 if (palive
->is_valid
== UCODE_VALID_OK
)
853 queue_delayed_work(priv
->workqueue
, pwork
,
854 msecs_to_jiffies(5));
856 IWL_WARN(priv
, "uCode did not respond OK.\n");
859 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
860 struct iwl_rx_mem_buffer
*rxb
)
862 #ifdef CONFIG_IWLWIFI_DEBUG
863 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
866 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
870 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
872 struct iwl_priv
*priv
=
873 container_of(work
, struct iwl_priv
, beacon_update
);
874 struct sk_buff
*beacon
;
876 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
877 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
880 IWL_ERR(priv
, "update beacon failed\n");
884 mutex_lock(&priv
->mutex
);
885 /* new beacon skb is allocated every time; dispose previous.*/
886 if (priv
->ibss_beacon
)
887 dev_kfree_skb(priv
->ibss_beacon
);
889 priv
->ibss_beacon
= beacon
;
890 mutex_unlock(&priv
->mutex
);
892 iwl3945_send_beacon_cmd(priv
);
895 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
896 struct iwl_rx_mem_buffer
*rxb
)
898 #ifdef CONFIG_IWLWIFI_DEBUG
899 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
900 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
901 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
903 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
904 "tsf %d %d rate %d\n",
905 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
906 beacon
->beacon_notify_hdr
.failure_frame
,
907 le32_to_cpu(beacon
->ibss_mgr_status
),
908 le32_to_cpu(beacon
->high_tsf
),
909 le32_to_cpu(beacon
->low_tsf
), rate
);
912 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
913 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
914 queue_work(priv
->workqueue
, &priv
->beacon_update
);
917 /* Handle notification from uCode that card's power state is changing
918 * due to software, hardware, or critical temperature RFKILL */
919 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
920 struct iwl_rx_mem_buffer
*rxb
)
922 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
923 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
924 unsigned long status
= priv
->status
;
926 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
927 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
928 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
930 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
931 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
933 if (flags
& HW_CARD_DISABLED
)
934 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
936 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
939 iwl_scan_cancel(priv
);
941 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
942 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
943 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
944 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
946 wake_up_interruptible(&priv
->wait_command_queue
);
950 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
952 * Setup the RX handlers for each of the reply types sent from the uCode
955 * This function chains into the hardware specific files for them to setup
956 * any hardware specific handlers as well.
958 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
960 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
961 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
962 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
963 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
964 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
965 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
966 iwl_rx_pm_debug_statistics_notif
;
967 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
970 * The same handler is used for both the REPLY to a discrete
971 * statistics request from the host as well as for the periodic
972 * statistics notifications (after received beacons) from the uCode.
974 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_hw_rx_statistics
;
975 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
977 iwl_setup_spectrum_handlers(priv
);
978 iwl_setup_rx_scan_handlers(priv
);
979 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
981 /* Set up hardware specific Rx handlers */
982 iwl3945_hw_rx_handler_setup(priv
);
985 /************************** RX-FUNCTIONS ****************************/
987 * Rx theory of operation
989 * The host allocates 32 DMA target addresses and passes the host address
990 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
994 * The host/firmware share two index registers for managing the Rx buffers.
996 * The READ index maps to the first position that the firmware may be writing
997 * to -- the driver can read up to (but not including) this position and get
999 * The READ index is managed by the firmware once the card is enabled.
1001 * The WRITE index maps to the last position the driver has read from -- the
1002 * position preceding WRITE is the last slot the firmware can place a packet.
1004 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1007 * During initialization, the host sets up the READ queue position to the first
1008 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1010 * When the firmware places a packet in a buffer, it will advance the READ index
1011 * and fire the RX interrupt. The driver can then query the READ index and
1012 * process as many packets as possible, moving the WRITE index forward as it
1013 * resets the Rx queue buffers with new memory.
1015 * The management in the driver is as follows:
1016 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1017 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1018 * to replenish the iwl->rxq->rx_free.
1019 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1020 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1021 * 'processed' and 'read' driver indexes as well)
1022 * + A received packet is processed and handed to the kernel network stack,
1023 * detached from the iwl->rxq. The driver 'processed' index is updated.
1024 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1025 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1026 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1027 * were enough free buffers and RX_STALLED is set it is cleared.
1032 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1033 * iwl3945_rx_queue_restock
1034 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1035 * queue, updates firmware pointers, and updates
1036 * the WRITE index. If insufficient rx_free buffers
1037 * are available, schedules iwl3945_rx_replenish
1039 * -- enable interrupts --
1040 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1041 * READ INDEX, detaching the SKB from the pool.
1042 * Moves the packet buffer from queue to rx_used.
1043 * Calls iwl3945_rx_queue_restock to refill any empty
1050 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1052 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
1053 dma_addr_t dma_addr
)
1055 return cpu_to_le32((u32
)dma_addr
);
1059 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1061 * If there are slots in the RX queue that need to be restocked,
1062 * and we have free pre-allocated buffers, fill the ranks as much
1063 * as we can, pulling from rx_free.
1065 * This moves the 'write' index forward to catch up with 'processed', and
1066 * also updates the memory address in the firmware to reference the new
1069 static int iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1071 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1072 struct list_head
*element
;
1073 struct iwl_rx_mem_buffer
*rxb
;
1074 unsigned long flags
;
1077 spin_lock_irqsave(&rxq
->lock
, flags
);
1078 write
= rxq
->write
& ~0x7;
1079 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1080 /* Get next free Rx buffer, remove from free list */
1081 element
= rxq
->rx_free
.next
;
1082 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1085 /* Point to Rx buffer via next RBD in circular buffer */
1086 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->page_dma
);
1087 rxq
->queue
[rxq
->write
] = rxb
;
1088 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1091 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1092 /* If the pre-allocated buffer pool is dropping low, schedule to
1094 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1095 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1098 /* If we've added more space for the firmware to place data, tell it.
1099 * Increment device's write pointer in multiples of 8. */
1100 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1101 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1102 spin_lock_irqsave(&rxq
->lock
, flags
);
1103 rxq
->need_update
= 1;
1104 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1105 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
1114 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1116 * When moving to rx_free an SKB is allocated for the slot.
1118 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1119 * This is called as a scheduled work item (except for during initialization)
1121 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1123 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1124 struct list_head
*element
;
1125 struct iwl_rx_mem_buffer
*rxb
;
1127 unsigned long flags
;
1128 gfp_t gfp_mask
= priority
;
1131 spin_lock_irqsave(&rxq
->lock
, flags
);
1133 if (list_empty(&rxq
->rx_used
)) {
1134 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1137 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1139 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1140 gfp_mask
|= __GFP_NOWARN
;
1142 if (priv
->hw_params
.rx_page_order
> 0)
1143 gfp_mask
|= __GFP_COMP
;
1145 /* Alloc a new receive buffer */
1146 page
= alloc_pages(gfp_mask
, priv
->hw_params
.rx_page_order
);
1148 if (net_ratelimit())
1149 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1150 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1152 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1153 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1155 /* We don't reschedule replenish work here -- we will
1156 * call the restock method and if it still needs
1157 * more buffers it will schedule replenish */
1161 spin_lock_irqsave(&rxq
->lock
, flags
);
1162 if (list_empty(&rxq
->rx_used
)) {
1163 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1164 __free_pages(page
, priv
->hw_params
.rx_page_order
);
1167 element
= rxq
->rx_used
.next
;
1168 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1170 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1173 /* Get physical address of RB/SKB */
1174 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, page
, 0,
1175 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1176 PCI_DMA_FROMDEVICE
);
1178 spin_lock_irqsave(&rxq
->lock
, flags
);
1180 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1182 priv
->alloc_rxb_page
++;
1184 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1188 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1190 unsigned long flags
;
1192 spin_lock_irqsave(&rxq
->lock
, flags
);
1193 INIT_LIST_HEAD(&rxq
->rx_free
);
1194 INIT_LIST_HEAD(&rxq
->rx_used
);
1195 /* Fill the rx_used queue with _all_ of the Rx buffers */
1196 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1197 /* In the reset function, these buffers may have been allocated
1198 * to an SKB, so we need to unmap and free potential storage */
1199 if (rxq
->pool
[i
].page
!= NULL
) {
1200 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1201 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1202 PCI_DMA_FROMDEVICE
);
1203 priv
->alloc_rxb_page
--;
1204 __free_pages(rxq
->pool
[i
].page
,
1205 priv
->hw_params
.rx_page_order
);
1206 rxq
->pool
[i
].page
= NULL
;
1208 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1211 /* Set us so that we have processed and used all buffers, but have
1212 * not restocked the Rx queue with fresh buffers */
1213 rxq
->read
= rxq
->write
= 0;
1214 rxq
->write_actual
= 0;
1215 rxq
->free_count
= 0;
1216 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1219 void iwl3945_rx_replenish(void *data
)
1221 struct iwl_priv
*priv
= data
;
1222 unsigned long flags
;
1224 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1226 spin_lock_irqsave(&priv
->lock
, flags
);
1227 iwl3945_rx_queue_restock(priv
);
1228 spin_unlock_irqrestore(&priv
->lock
, flags
);
1231 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1233 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1235 iwl3945_rx_queue_restock(priv
);
1239 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1240 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1241 * This free routine walks the list of POOL entries and if SKB is set to
1242 * non NULL it is unmapped and freed
1244 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1247 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1248 if (rxq
->pool
[i
].page
!= NULL
) {
1249 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1250 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1251 PCI_DMA_FROMDEVICE
);
1252 __free_pages(rxq
->pool
[i
].page
,
1253 priv
->hw_params
.rx_page_order
);
1254 rxq
->pool
[i
].page
= NULL
;
1255 priv
->alloc_rxb_page
--;
1259 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1261 pci_free_consistent(priv
->pci_dev
, sizeof(struct iwl_rb_status
),
1262 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1264 rxq
->rb_stts
= NULL
;
1268 /* Convert linear signal-to-noise ratio into dB */
1269 static u8 ratio2dB
[100] = {
1270 /* 0 1 2 3 4 5 6 7 8 9 */
1271 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1272 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1273 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1274 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1275 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1276 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1277 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1278 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1279 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1280 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1283 /* Calculates a relative dB value from a ratio of linear
1284 * (i.e. not dB) signal levels.
1285 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1286 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1288 /* 1000:1 or higher just report as 60 dB */
1289 if (sig_ratio
>= 1000)
1292 /* 100:1 or higher, divide by 10 and use table,
1293 * add 20 dB to make up for divide by 10 */
1294 if (sig_ratio
>= 100)
1295 return 20 + (int)ratio2dB
[sig_ratio
/10];
1297 /* We shouldn't see this */
1301 /* Use table for ratios 1:1 - 99:1 */
1302 return (int)ratio2dB
[sig_ratio
];
1305 #define PERFECT_RSSI (-20) /* dBm */
1306 #define WORST_RSSI (-95) /* dBm */
1307 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1309 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1310 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1311 * about formulas used below. */
1312 int iwl3945_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
1315 int degradation
= PERFECT_RSSI
- rssi_dbm
;
1317 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1318 * as indicator; formula is (signal dbm - noise dbm).
1319 * SNR at or above 40 is a great signal (100%).
1320 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1321 * Weakest usable signal is usually 10 - 15 dB SNR. */
1323 if (rssi_dbm
- noise_dbm
>= 40)
1325 else if (rssi_dbm
< noise_dbm
)
1327 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
1329 /* Else use just the signal level.
1330 * This formula is a least squares fit of data points collected and
1331 * compared with a reference system that had a percentage (%) display
1332 * for signal quality. */
1334 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
1335 (15 * RSSI_RANGE
+ 62 * degradation
)) /
1336 (RSSI_RANGE
* RSSI_RANGE
);
1340 else if (sig_qual
< 1)
1347 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1349 * Uses the priv->rx_handlers callback function array to invoke
1350 * the appropriate handlers, including command responses,
1351 * frame-received notifications, and other notifications.
1353 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1355 struct iwl_rx_mem_buffer
*rxb
;
1356 struct iwl_rx_packet
*pkt
;
1357 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1360 unsigned long flags
;
1363 int total_empty
= 0;
1365 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366 * buffer that the driver may process (last buffer filled by ucode). */
1367 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1370 /* calculate total frames need to be restock after handling RX */
1371 total_empty
= r
- rxq
->write_actual
;
1372 if (total_empty
< 0)
1373 total_empty
+= RX_QUEUE_SIZE
;
1375 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1377 /* Rx interrupt, but nothing sent from uCode */
1379 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1382 rxb
= rxq
->queue
[i
];
1384 /* If an RXB doesn't have a Rx queue slot associated with it,
1385 * then a bug has been introduced in the queue refilling
1386 * routines -- catch it here */
1387 BUG_ON(rxb
== NULL
);
1389 rxq
->queue
[i
] = NULL
;
1391 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
1392 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1393 PCI_DMA_FROMDEVICE
);
1394 pkt
= rxb_addr(rxb
);
1396 trace_iwlwifi_dev_rx(priv
, pkt
,
1397 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
1399 /* Reclaim a command buffer only if this packet is a response
1400 * to a (driver-originated) command.
1401 * If the packet (e.g. Rx frame) originated from uCode,
1402 * there is no command buffer to reclaim.
1403 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1404 * but apparently a few don't get set; catch them here. */
1405 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1406 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1407 (pkt
->hdr
.cmd
!= REPLY_TX
);
1409 /* Based on type of command response or notification,
1410 * handle those that need handling via function in
1411 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1412 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1413 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1414 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1415 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1416 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1418 /* No handling needed */
1420 "r %d i %d No handler needed for %s, 0x%02x\n",
1421 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1426 * XXX: After here, we should always check rxb->page
1427 * against NULL before touching it or its virtual
1428 * memory (pkt). Because some rx_handler might have
1429 * already taken or freed the pages.
1433 /* Invoke any callbacks, transfer the buffer to caller,
1434 * and fire off the (possibly) blocking iwl_send_cmd()
1435 * as we reclaim the driver command queue */
1437 iwl_tx_cmd_complete(priv
, rxb
);
1439 IWL_WARN(priv
, "Claim null rxb?\n");
1442 /* Reuse the page if possible. For notification packets and
1443 * SKBs that fail to Rx correctly, add them back into the
1444 * rx_free list for reuse later. */
1445 spin_lock_irqsave(&rxq
->lock
, flags
);
1446 if (rxb
->page
!= NULL
) {
1447 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1448 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1449 PCI_DMA_FROMDEVICE
);
1450 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1453 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1455 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1457 i
= (i
+ 1) & RX_QUEUE_MASK
;
1458 /* If there are a lot of unused frames,
1459 * restock the Rx queue so ucode won't assert. */
1464 iwl3945_rx_replenish_now(priv
);
1470 /* Backtrack one entry */
1473 iwl3945_rx_replenish_now(priv
);
1475 iwl3945_rx_queue_restock(priv
);
1478 /* call this function to flush any scheduled tasklet */
1479 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1481 /* wait to make sure we flush pending tasklet*/
1482 synchronize_irq(priv
->pci_dev
->irq
);
1483 tasklet_kill(&priv
->irq_tasklet
);
1486 #ifdef CONFIG_IWLWIFI_DEBUG
1487 static const char *desc_lookup(int i
)
1495 return "BAD_CHECKSUM";
1497 return "NMI_INTERRUPT";
1501 return "FATAL_ERROR";
1507 #define ERROR_START_OFFSET (1 * sizeof(u32))
1508 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1510 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1513 u32 desc
, time
, count
, base
, data1
;
1514 u32 blink1
, blink2
, ilink1
, ilink2
;
1516 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1518 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1519 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1524 count
= iwl_read_targ_mem(priv
, base
);
1526 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1527 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1528 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1529 priv
->status
, count
);
1532 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1533 "ilink1 nmiPC Line\n");
1534 for (i
= ERROR_START_OFFSET
;
1535 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1536 i
+= ERROR_ELEM_SIZE
) {
1537 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1539 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1541 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1543 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1545 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1547 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1549 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1552 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1553 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1554 ilink1
, ilink2
, data1
);
1555 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, 0,
1556 0, blink1
, blink2
, ilink1
, ilink2
);
1560 #define EVENT_START_OFFSET (6 * sizeof(u32))
1563 * iwl3945_print_event_log - Dump error event log to syslog
1566 static void iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1567 u32 num_events
, u32 mode
)
1570 u32 base
; /* SRAM byte address of event log header */
1571 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1572 u32 ptr
; /* SRAM byte address of log data */
1573 u32 ev
, time
, data
; /* event log data */
1574 unsigned long reg_flags
;
1576 if (num_events
== 0)
1579 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1582 event_size
= 2 * sizeof(u32
);
1584 event_size
= 3 * sizeof(u32
);
1586 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1588 /* Make sure device is powered up for SRAM reads */
1589 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
1590 iwl_grab_nic_access(priv
);
1592 /* Set starting address; reads will auto-increment */
1593 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
1596 /* "time" is actually "data" for mode 0 (no timestamp).
1597 * place event id # at far right for easier visual parsing. */
1598 for (i
= 0; i
< num_events
; i
++) {
1599 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1600 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1603 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1604 trace_iwlwifi_dev_ucode_event(priv
, 0, time
, ev
);
1606 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1607 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n", time
, data
, ev
);
1608 trace_iwlwifi_dev_ucode_event(priv
, time
, data
, ev
);
1612 /* Allow device to power down */
1613 iwl_release_nic_access(priv
);
1614 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
1617 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1618 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1620 void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1622 u32 base
; /* SRAM byte address of event log header */
1623 u32 capacity
; /* event log capacity in # entries */
1624 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1625 u32 num_wraps
; /* # times uCode wrapped to top of log */
1626 u32 next_entry
; /* index of next entry to be written by uCode */
1627 u32 size
; /* # entries that we'll print */
1629 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1630 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1631 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1635 /* event log header */
1636 capacity
= iwl_read_targ_mem(priv
, base
);
1637 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1638 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1639 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1641 if (capacity
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1642 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
1643 capacity
, IWL3945_MAX_EVENT_LOG_SIZE
);
1644 capacity
= IWL3945_MAX_EVENT_LOG_SIZE
;
1647 if (next_entry
> IWL3945_MAX_EVENT_LOG_SIZE
) {
1648 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
1649 next_entry
, IWL3945_MAX_EVENT_LOG_SIZE
);
1650 next_entry
= IWL3945_MAX_EVENT_LOG_SIZE
;
1653 size
= num_wraps
? capacity
: next_entry
;
1655 /* bail out if nothing in log */
1657 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1661 IWL_ERR(priv
, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1664 /* if uCode has wrapped back to top of log, start at the oldest entry,
1665 * i.e the next one that uCode would fill. */
1667 iwl3945_print_event_log(priv
, next_entry
,
1668 capacity
- next_entry
, mode
);
1670 /* (then/else) start at top of log */
1671 iwl3945_print_event_log(priv
, 0, next_entry
, mode
);
1675 void iwl3945_dump_nic_event_log(struct iwl_priv
*priv
)
1679 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1685 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1687 u32 inta
, handled
= 0;
1689 unsigned long flags
;
1690 #ifdef CONFIG_IWLWIFI_DEBUG
1694 spin_lock_irqsave(&priv
->lock
, flags
);
1696 /* Ack/clear/reset pending uCode interrupts.
1697 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1698 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1699 inta
= iwl_read32(priv
, CSR_INT
);
1700 iwl_write32(priv
, CSR_INT
, inta
);
1702 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1703 * Any new interrupts that happen after this, either while we're
1704 * in this tasklet, or later, will show up in next ISR/tasklet. */
1705 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1706 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1708 #ifdef CONFIG_IWLWIFI_DEBUG
1709 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1710 /* just for debug */
1711 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1712 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1713 inta
, inta_mask
, inta_fh
);
1717 spin_unlock_irqrestore(&priv
->lock
, flags
);
1719 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1720 * atomic, make sure that inta covers all the interrupts that
1721 * we've discovered, even if FH interrupt came in just after
1722 * reading CSR_INT. */
1723 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1724 inta
|= CSR_INT_BIT_FH_RX
;
1725 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1726 inta
|= CSR_INT_BIT_FH_TX
;
1728 /* Now service all interrupt bits discovered above. */
1729 if (inta
& CSR_INT_BIT_HW_ERR
) {
1730 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1732 /* Tell the device to stop sending interrupts */
1733 iwl_disable_interrupts(priv
);
1735 priv
->isr_stats
.hw
++;
1736 iwl_irq_handle_error(priv
);
1738 handled
|= CSR_INT_BIT_HW_ERR
;
1743 #ifdef CONFIG_IWLWIFI_DEBUG
1744 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1745 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1746 if (inta
& CSR_INT_BIT_SCD
) {
1747 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1748 "the frame/frames.\n");
1749 priv
->isr_stats
.sch
++;
1752 /* Alive notification via Rx interrupt will do the real work */
1753 if (inta
& CSR_INT_BIT_ALIVE
) {
1754 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1755 priv
->isr_stats
.alive
++;
1759 /* Safely ignore these bits for debug checks below */
1760 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1762 /* Error detected by uCode */
1763 if (inta
& CSR_INT_BIT_SW_ERR
) {
1764 IWL_ERR(priv
, "Microcode SW error detected. "
1765 "Restarting 0x%X.\n", inta
);
1766 priv
->isr_stats
.sw
++;
1767 priv
->isr_stats
.sw_err
= inta
;
1768 iwl_irq_handle_error(priv
);
1769 handled
|= CSR_INT_BIT_SW_ERR
;
1772 /* uCode wakes up after power-down sleep */
1773 if (inta
& CSR_INT_BIT_WAKEUP
) {
1774 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1775 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1776 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1777 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1778 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1779 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1780 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1781 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1783 priv
->isr_stats
.wakeup
++;
1784 handled
|= CSR_INT_BIT_WAKEUP
;
1787 /* All uCode command responses, including Tx command responses,
1788 * Rx "responses" (frame-received notification), and other
1789 * notifications from uCode come through here*/
1790 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1791 iwl3945_rx_handle(priv
);
1792 priv
->isr_stats
.rx
++;
1793 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1796 if (inta
& CSR_INT_BIT_FH_TX
) {
1797 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1798 priv
->isr_stats
.tx
++;
1800 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1801 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1802 (FH39_SRVC_CHNL
), 0x0);
1803 handled
|= CSR_INT_BIT_FH_TX
;
1806 if (inta
& ~handled
) {
1807 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1808 priv
->isr_stats
.unhandled
++;
1811 if (inta
& ~priv
->inta_mask
) {
1812 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1813 inta
& ~priv
->inta_mask
);
1814 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1817 /* Re-enable all interrupts */
1818 /* only Re-enable if disabled by irq */
1819 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1820 iwl_enable_interrupts(priv
);
1822 #ifdef CONFIG_IWLWIFI_DEBUG
1823 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1824 inta
= iwl_read32(priv
, CSR_INT
);
1825 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1826 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1827 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1828 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1833 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1834 enum ieee80211_band band
,
1835 u8 is_active
, u8 n_probes
,
1836 struct iwl3945_scan_channel
*scan_ch
)
1838 struct ieee80211_channel
*chan
;
1839 const struct ieee80211_supported_band
*sband
;
1840 const struct iwl_channel_info
*ch_info
;
1841 u16 passive_dwell
= 0;
1842 u16 active_dwell
= 0;
1845 sband
= iwl_get_hw_mode(priv
, band
);
1849 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1850 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
);
1852 if (passive_dwell
<= active_dwell
)
1853 passive_dwell
= active_dwell
+ 1;
1855 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1856 chan
= priv
->scan_request
->channels
[i
];
1858 if (chan
->band
!= band
)
1861 scan_ch
->channel
= chan
->hw_value
;
1863 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1864 if (!is_channel_valid(ch_info
)) {
1865 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1870 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1871 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1872 /* If passive , set up for auto-switch
1873 * and use long active_dwell time.
1875 if (!is_active
|| is_channel_passive(ch_info
) ||
1876 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1877 scan_ch
->type
= 0; /* passive */
1878 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1879 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1881 scan_ch
->type
= 1; /* active */
1884 /* Set direct probe bits. These may be used both for active
1885 * scan channels (probes gets sent right away),
1886 * or for passive channels (probes get se sent only after
1887 * hearing clear Rx packet).*/
1888 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1890 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1892 /* uCode v1 does not allow setting direct probe bits on
1893 * passive channel. */
1894 if ((scan_ch
->type
& 1) && n_probes
)
1895 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1898 /* Set txpower levels to defaults */
1899 scan_ch
->tpc
.dsp_atten
= 110;
1900 /* scan_pwr_info->tpc.dsp_atten; */
1902 /*scan_pwr_info->tpc.tx_gain; */
1903 if (band
== IEEE80211_BAND_5GHZ
)
1904 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1906 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1907 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1909 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1913 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1915 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1916 (scan_ch
->type
& 1) ?
1917 active_dwell
: passive_dwell
);
1923 IWL_DEBUG_SCAN(priv
, "total channels to scan %d \n", added
);
1927 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1928 struct ieee80211_rate
*rates
)
1932 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
1933 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1934 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1935 rates
[i
].hw_value_short
= i
;
1937 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1939 * If CCK != 1M then set short preamble rate flag.
1941 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1942 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1947 /******************************************************************************
1949 * uCode download functions
1951 ******************************************************************************/
1953 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1955 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1956 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1957 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1958 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1959 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1960 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1964 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1965 * looking at all data.
1967 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1974 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1976 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1977 IWL39_RTC_INST_LOWER_BOUND
);
1980 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1981 /* read data comes through single port, auto-incr addr */
1982 /* NOTE: Use the debugless read so we don't flood kernel log
1983 * if IWL_DL_IO is set */
1984 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1985 if (val
!= le32_to_cpu(*image
)) {
1986 IWL_ERR(priv
, "uCode INST section is invalid at "
1987 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1988 save_len
- len
, val
, le32_to_cpu(*image
));
1998 IWL_DEBUG_INFO(priv
,
1999 "ucode image in INSTRUCTION memory is good\n");
2006 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2007 * using sample data 100 bytes apart. If these sample points are good,
2008 * it's a pretty good bet that everything between them is good, too.
2010 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2017 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2019 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2020 /* read data comes through single port, auto-incr addr */
2021 /* NOTE: Use the debugless read so we don't flood kernel log
2022 * if IWL_DL_IO is set */
2023 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2024 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2025 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2026 if (val
!= le32_to_cpu(*image
)) {
2027 #if 0 /* Enable this if you want to see details */
2028 IWL_ERR(priv
, "uCode INST section is invalid at "
2029 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2044 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2045 * and verify its contents
2047 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2054 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2055 len
= priv
->ucode_boot
.len
;
2056 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2058 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2062 /* Try initialize */
2063 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2064 len
= priv
->ucode_init
.len
;
2065 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2067 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2071 /* Try runtime/protocol */
2072 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2073 len
= priv
->ucode_code
.len
;
2074 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2076 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2080 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2082 /* Since nothing seems to match, show first several data entries in
2083 * instruction SRAM, so maybe visual inspection will give a clue.
2084 * Selection of bootstrap image (vs. other images) is arbitrary. */
2085 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2086 len
= priv
->ucode_boot
.len
;
2087 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2092 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2094 /* Remove all resets to allow NIC to operate */
2095 iwl_write32(priv
, CSR_RESET
, 0);
2099 * iwl3945_read_ucode - Read uCode images from disk file.
2101 * Copy into buffers for card to fetch via bus-mastering
2103 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2105 const struct iwl_ucode_header
*ucode
;
2106 int ret
= -EINVAL
, index
;
2107 const struct firmware
*ucode_raw
;
2108 /* firmware file name contains uCode/driver compatibility version */
2109 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2110 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2111 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2115 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2117 /* Ask kernel firmware_class module to get the boot firmware off disk.
2118 * request_firmware() is synchronous, file is in memory on return. */
2119 for (index
= api_max
; index
>= api_min
; index
--) {
2120 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2121 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2123 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2130 if (index
< api_max
)
2131 IWL_ERR(priv
, "Loaded firmware %s, "
2132 "which is deprecated. "
2133 " Please use API v%u instead.\n",
2135 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2136 "(%zd bytes) from disk\n",
2137 buf
, ucode_raw
->size
);
2145 /* Make sure that we got at least our header! */
2146 if (ucode_raw
->size
< priv
->cfg
->ops
->ucode
->get_header_size(1)) {
2147 IWL_ERR(priv
, "File size way too small!\n");
2152 /* Data from ucode file: header followed by uCode images */
2153 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2155 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2156 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2157 inst_size
= priv
->cfg
->ops
->ucode
->get_inst_size(ucode
, api_ver
);
2158 data_size
= priv
->cfg
->ops
->ucode
->get_data_size(ucode
, api_ver
);
2159 init_size
= priv
->cfg
->ops
->ucode
->get_init_size(ucode
, api_ver
);
2161 priv
->cfg
->ops
->ucode
->get_init_data_size(ucode
, api_ver
);
2162 boot_size
= priv
->cfg
->ops
->ucode
->get_boot_size(ucode
, api_ver
);
2163 src
= priv
->cfg
->ops
->ucode
->get_data(ucode
, api_ver
);
2165 /* api_ver should match the api version forming part of the
2166 * firmware filename ... but we don't check for that and only rely
2167 * on the API version read from firmware header from here on forward */
2169 if (api_ver
< api_min
|| api_ver
> api_max
) {
2170 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2171 "Driver supports v%u, firmware is v%u.\n",
2173 priv
->ucode_ver
= 0;
2177 if (api_ver
!= api_max
)
2178 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2179 "got %u. New firmware can be obtained "
2180 "from http://www.intellinuxwireless.org.\n",
2183 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2184 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2185 IWL_UCODE_MINOR(priv
->ucode_ver
),
2186 IWL_UCODE_API(priv
->ucode_ver
),
2187 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2189 snprintf(priv
->hw
->wiphy
->fw_version
,
2190 sizeof(priv
->hw
->wiphy
->fw_version
),
2192 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2193 IWL_UCODE_MINOR(priv
->ucode_ver
),
2194 IWL_UCODE_API(priv
->ucode_ver
),
2195 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2197 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2199 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2201 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2203 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2205 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2207 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2211 /* Verify size of file vs. image size info in file's header */
2212 if (ucode_raw
->size
!= priv
->cfg
->ops
->ucode
->get_header_size(api_ver
) +
2213 inst_size
+ data_size
+ init_size
+
2214 init_data_size
+ boot_size
) {
2216 IWL_DEBUG_INFO(priv
,
2217 "uCode file size %zd does not match expected size\n",
2223 /* Verify that uCode images will fit in card's SRAM */
2224 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2225 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2231 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2232 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2237 if (init_size
> IWL39_MAX_INST_SIZE
) {
2238 IWL_DEBUG_INFO(priv
,
2239 "uCode init instr len %d too large to fit in\n",
2244 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2245 IWL_DEBUG_INFO(priv
,
2246 "uCode init data len %d too large to fit in\n",
2251 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2252 IWL_DEBUG_INFO(priv
,
2253 "uCode boot instr len %d too large to fit in\n",
2259 /* Allocate ucode buffers for card's bus-master loading ... */
2261 /* Runtime instructions and 2 copies of data:
2262 * 1) unmodified from disk
2263 * 2) backup cache for save/restore during power-downs */
2264 priv
->ucode_code
.len
= inst_size
;
2265 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2267 priv
->ucode_data
.len
= data_size
;
2268 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2270 priv
->ucode_data_backup
.len
= data_size
;
2271 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2273 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2274 !priv
->ucode_data_backup
.v_addr
)
2277 /* Initialization instructions and data */
2278 if (init_size
&& init_data_size
) {
2279 priv
->ucode_init
.len
= init_size
;
2280 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2282 priv
->ucode_init_data
.len
= init_data_size
;
2283 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2285 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2289 /* Bootstrap (instructions only, no data) */
2291 priv
->ucode_boot
.len
= boot_size
;
2292 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2294 if (!priv
->ucode_boot
.v_addr
)
2298 /* Copy images into buffers for card's bus-master reads ... */
2300 /* Runtime instructions (first block of data in file) */
2302 IWL_DEBUG_INFO(priv
,
2303 "Copying (but not loading) uCode instr len %zd\n", len
);
2304 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2307 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2308 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2310 /* Runtime data (2nd block)
2311 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2313 IWL_DEBUG_INFO(priv
,
2314 "Copying (but not loading) uCode data len %zd\n", len
);
2315 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2316 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2319 /* Initialization instructions (3rd block) */
2322 IWL_DEBUG_INFO(priv
,
2323 "Copying (but not loading) init instr len %zd\n", len
);
2324 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2328 /* Initialization data (4th block) */
2329 if (init_data_size
) {
2330 len
= init_data_size
;
2331 IWL_DEBUG_INFO(priv
,
2332 "Copying (but not loading) init data len %zd\n", len
);
2333 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2337 /* Bootstrap instructions (5th block) */
2339 IWL_DEBUG_INFO(priv
,
2340 "Copying (but not loading) boot instr len %zd\n", len
);
2341 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2343 /* We have our copies now, allow OS release its copies */
2344 release_firmware(ucode_raw
);
2348 IWL_ERR(priv
, "failed to allocate pci memory\n");
2350 iwl3945_dealloc_ucode_pci(priv
);
2353 release_firmware(ucode_raw
);
2361 * iwl3945_set_ucode_ptrs - Set uCode address location
2363 * Tell initialization uCode where to find runtime uCode.
2365 * BSM registers initially contain pointers to initialization uCode.
2366 * We need to replace them to load runtime uCode inst and data,
2367 * and to save runtime data when powering down.
2369 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2374 /* bits 31:0 for 3945 */
2375 pinst
= priv
->ucode_code
.p_addr
;
2376 pdata
= priv
->ucode_data_backup
.p_addr
;
2378 /* Tell bootstrap uCode where to find image to load */
2379 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2380 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2381 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2382 priv
->ucode_data
.len
);
2384 /* Inst byte count must be last to set up, bit 31 signals uCode
2385 * that all new ptr/size info is in place */
2386 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2387 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2389 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2395 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2397 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2399 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2401 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2403 /* Check alive response for "valid" sign from uCode */
2404 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2405 /* We had an error bringing up the hardware, so take it
2406 * all the way back down so we can try again */
2407 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2411 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2412 * This is a paranoid check, because we would not have gotten the
2413 * "initialize" alive if code weren't properly loaded. */
2414 if (iwl3945_verify_ucode(priv
)) {
2415 /* Runtime instruction load was bad;
2416 * take it all the way back down so we can try again */
2417 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2421 /* Send pointers to protocol/runtime uCode image ... init code will
2422 * load and launch runtime uCode, which will send us another "Alive"
2424 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2425 if (iwl3945_set_ucode_ptrs(priv
)) {
2426 /* Runtime instruction load won't happen;
2427 * take it all the way back down so we can try again */
2428 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2434 queue_work(priv
->workqueue
, &priv
->restart
);
2438 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2439 * from protocol/runtime uCode (initialization uCode's
2440 * Alive gets handled by iwl3945_init_alive_start()).
2442 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2444 int thermal_spin
= 0;
2447 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2449 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2450 /* We had an error bringing up the hardware, so take it
2451 * all the way back down so we can try again */
2452 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2456 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2457 * This is a paranoid check, because we would not have gotten the
2458 * "runtime" alive if code weren't properly loaded. */
2459 if (iwl3945_verify_ucode(priv
)) {
2460 /* Runtime instruction load was bad;
2461 * take it all the way back down so we can try again */
2462 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2466 iwl_clear_stations_table(priv
);
2468 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2469 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2472 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2473 /* if RFKILL is not on, then wait for thermal
2474 * sensor in adapter to kick in */
2475 while (iwl3945_hw_get_temperature(priv
) == 0) {
2481 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2484 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2486 /* After the ALIVE response, we can send commands to 3945 uCode */
2487 set_bit(STATUS_ALIVE
, &priv
->status
);
2489 if (iwl_is_rfkill(priv
))
2492 ieee80211_wake_queues(priv
->hw
);
2494 priv
->active_rate
= priv
->rates_mask
;
2495 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
2497 iwl_power_update_mode(priv
, false);
2499 if (iwl_is_associated(priv
)) {
2500 struct iwl3945_rxon_cmd
*active_rxon
=
2501 (struct iwl3945_rxon_cmd
*)(&priv
->active_rxon
);
2503 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2504 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2506 /* Initialize our rx_config data */
2507 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
2510 /* Configure Bluetooth device coexistence support */
2511 iwl_send_bt_config(priv
);
2513 /* Configure the adapter for unassociated operation */
2514 iwlcore_commit_rxon(priv
);
2516 iwl3945_reg_txpower_periodic(priv
);
2518 iwl_leds_init(priv
);
2520 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2521 set_bit(STATUS_READY
, &priv
->status
);
2522 wake_up_interruptible(&priv
->wait_command_queue
);
2524 /* reassociate for ADHOC mode */
2525 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
2526 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
2529 iwl_mac_beacon_update(priv
->hw
, beacon
);
2532 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
2533 iwl_set_mode(priv
, priv
->iw_mode
);
2538 queue_work(priv
->workqueue
, &priv
->restart
);
2541 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2543 static void __iwl3945_down(struct iwl_priv
*priv
)
2545 unsigned long flags
;
2546 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2547 struct ieee80211_conf
*conf
= NULL
;
2549 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2551 conf
= ieee80211_get_hw_conf(priv
->hw
);
2554 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2556 iwl_clear_stations_table(priv
);
2558 /* Unblock any waiting calls */
2559 wake_up_interruptible_all(&priv
->wait_command_queue
);
2561 /* Wipe out the EXIT_PENDING status bit if we are not actually
2562 * exiting the module */
2564 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2566 /* stop and reset the on-board processor */
2567 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2569 /* tell the device to stop sending interrupts */
2570 spin_lock_irqsave(&priv
->lock
, flags
);
2571 iwl_disable_interrupts(priv
);
2572 spin_unlock_irqrestore(&priv
->lock
, flags
);
2573 iwl_synchronize_irq(priv
);
2575 if (priv
->mac80211_registered
)
2576 ieee80211_stop_queues(priv
->hw
);
2578 /* If we have not previously called iwl3945_init() then
2579 * clear all bits but the RF Kill bits and return */
2580 if (!iwl_is_init(priv
)) {
2581 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2583 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2584 STATUS_GEO_CONFIGURED
|
2585 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2586 STATUS_EXIT_PENDING
;
2590 /* ...otherwise clear out all the status bits but the RF Kill
2591 * bit and continue taking the NIC down. */
2592 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2594 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2595 STATUS_GEO_CONFIGURED
|
2596 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2598 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2599 STATUS_EXIT_PENDING
;
2601 iwl3945_hw_txq_ctx_stop(priv
);
2602 iwl3945_hw_rxq_stop(priv
);
2604 /* Power-down device's busmaster DMA clocks */
2605 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2608 /* Stop the device, and put it in low power state */
2609 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2612 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2614 if (priv
->ibss_beacon
)
2615 dev_kfree_skb(priv
->ibss_beacon
);
2616 priv
->ibss_beacon
= NULL
;
2618 /* clear out any free frames */
2619 iwl3945_clear_free_frames(priv
);
2622 static void iwl3945_down(struct iwl_priv
*priv
)
2624 mutex_lock(&priv
->mutex
);
2625 __iwl3945_down(priv
);
2626 mutex_unlock(&priv
->mutex
);
2628 iwl3945_cancel_deferred_work(priv
);
2631 #define MAX_HW_RESTARTS 5
2633 static int __iwl3945_up(struct iwl_priv
*priv
)
2637 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2638 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2642 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2643 IWL_ERR(priv
, "ucode not available for device bring up\n");
2647 /* If platform's RF_KILL switch is NOT set to KILL */
2648 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2649 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2650 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2652 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2653 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2657 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2659 rc
= iwl3945_hw_nic_init(priv
);
2661 IWL_ERR(priv
, "Unable to int nic\n");
2665 /* make sure rfkill handshake bits are cleared */
2666 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2667 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2668 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2670 /* clear (again), then enable host interrupts */
2671 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2672 iwl_enable_interrupts(priv
);
2674 /* really make sure rfkill handshake bits are cleared */
2675 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2676 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2678 /* Copy original ucode data image from disk into backup cache.
2679 * This will be used to initialize the on-board processor's
2680 * data SRAM for a clean start when the runtime program first loads. */
2681 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2682 priv
->ucode_data
.len
);
2684 /* We return success when we resume from suspend and rf_kill is on. */
2685 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2688 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2690 iwl_clear_stations_table(priv
);
2692 /* load bootstrap state machine,
2693 * load bootstrap program into processor's memory,
2694 * prepare to load the "initialize" uCode */
2695 priv
->cfg
->ops
->lib
->load_ucode(priv
);
2699 "Unable to set up bootstrap uCode: %d\n", rc
);
2703 /* start card; "initialize" will load runtime ucode */
2704 iwl3945_nic_start(priv
);
2706 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2711 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2712 __iwl3945_down(priv
);
2713 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2715 /* tried to restart and config the device for as long as our
2716 * patience could withstand */
2717 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2722 /*****************************************************************************
2724 * Workqueue callbacks
2726 *****************************************************************************/
2728 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2730 struct iwl_priv
*priv
=
2731 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2733 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2736 mutex_lock(&priv
->mutex
);
2737 iwl3945_init_alive_start(priv
);
2738 mutex_unlock(&priv
->mutex
);
2741 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2743 struct iwl_priv
*priv
=
2744 container_of(data
, struct iwl_priv
, alive_start
.work
);
2746 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2749 mutex_lock(&priv
->mutex
);
2750 iwl3945_alive_start(priv
);
2751 mutex_unlock(&priv
->mutex
);
2755 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2756 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2757 * *is* readable even when device has been SW_RESET into low power mode
2758 * (e.g. during RF KILL).
2760 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2762 struct iwl_priv
*priv
=
2763 container_of(data
, struct iwl_priv
, rfkill_poll
.work
);
2764 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2765 bool new_rfkill
= !(iwl_read32(priv
, CSR_GP_CNTRL
)
2766 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2768 if (new_rfkill
!= old_rfkill
) {
2770 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2772 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2774 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, new_rfkill
);
2776 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
2777 new_rfkill
? "disable radio" : "enable radio");
2780 /* Keep this running, even if radio now enabled. This will be
2781 * cancelled in mac_start() if system decides to start again */
2782 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
2783 round_jiffies_relative(2 * HZ
));
2787 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2788 static void iwl3945_bg_request_scan(struct work_struct
*data
)
2790 struct iwl_priv
*priv
=
2791 container_of(data
, struct iwl_priv
, request_scan
);
2792 struct iwl_host_cmd cmd
= {
2793 .id
= REPLY_SCAN_CMD
,
2794 .len
= sizeof(struct iwl3945_scan_cmd
),
2795 .flags
= CMD_SIZE_HUGE
,
2798 struct iwl3945_scan_cmd
*scan
;
2799 struct ieee80211_conf
*conf
= NULL
;
2801 enum ieee80211_band band
;
2802 bool is_active
= false;
2804 conf
= ieee80211_get_hw_conf(priv
->hw
);
2806 mutex_lock(&priv
->mutex
);
2808 cancel_delayed_work(&priv
->scan_check
);
2810 if (!iwl_is_ready(priv
)) {
2811 IWL_WARN(priv
, "request scan called when driver not ready.\n");
2815 /* Make sure the scan wasn't canceled before this queued work
2816 * was given the chance to run... */
2817 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
2820 /* This should never be called or scheduled if there is currently
2821 * a scan active in the hardware. */
2822 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2823 IWL_DEBUG_INFO(priv
, "Multiple concurrent scan requests "
2824 "Ignoring second request.\n");
2829 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2830 IWL_DEBUG_SCAN(priv
, "Aborting scan due to device shutdown\n");
2834 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2836 "Scan request while abort pending. Queuing.\n");
2840 if (iwl_is_rfkill(priv
)) {
2841 IWL_DEBUG_HC(priv
, "Aborting scan due to RF Kill activation\n");
2845 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2847 "Scan request while uninitialized. Queuing.\n");
2851 if (!priv
->scan_bands
) {
2852 IWL_DEBUG_HC(priv
, "Aborting scan due to no requested bands\n");
2857 priv
->scan
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2858 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2865 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2867 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2868 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2870 if (iwl_is_associated(priv
)) {
2873 u32 suspend_time
= 100;
2874 u32 scan_suspend_time
= 100;
2875 unsigned long flags
;
2877 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2879 spin_lock_irqsave(&priv
->lock
, flags
);
2880 interval
= priv
->beacon_int
;
2881 spin_unlock_irqrestore(&priv
->lock
, flags
);
2883 scan
->suspend_time
= 0;
2884 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2886 interval
= suspend_time
;
2888 * suspend time format:
2889 * 0-19: beacon interval in usec (time before exec.)
2891 * 24-31: number of beacons (suspend between channels)
2894 extra
= (suspend_time
/ interval
) << 24;
2895 scan_suspend_time
= 0xFF0FFFFF &
2896 (extra
| ((suspend_time
% interval
) * 1024));
2898 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2899 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2900 scan_suspend_time
, interval
);
2903 if (priv
->scan_request
->n_ssids
) {
2905 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2906 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2907 /* always does wildcard anyway */
2908 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2910 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2911 scan
->direct_scan
[p
].len
=
2912 priv
->scan_request
->ssids
[i
].ssid_len
;
2913 memcpy(scan
->direct_scan
[p
].ssid
,
2914 priv
->scan_request
->ssids
[i
].ssid
,
2915 priv
->scan_request
->ssids
[i
].ssid_len
);
2921 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2923 /* We don't build a direct scan probe request; the uCode will do
2924 * that based on the direct_mask added to each channel entry */
2925 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2926 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2927 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2929 /* flags + rate selection */
2931 if (priv
->scan_bands
& BIT(IEEE80211_BAND_2GHZ
)) {
2932 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2933 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2934 scan
->good_CRC_th
= 0;
2935 band
= IEEE80211_BAND_2GHZ
;
2936 } else if (priv
->scan_bands
& BIT(IEEE80211_BAND_5GHZ
)) {
2937 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2939 * If active scaning is requested but a certain channel
2940 * is marked passive, we can do active scanning if we
2941 * detect transmissions.
2943 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH
: 0;
2944 band
= IEEE80211_BAND_5GHZ
;
2946 IWL_WARN(priv
, "Invalid scan band count\n");
2950 scan
->tx_cmd
.len
= cpu_to_le16(
2951 iwl_fill_probe_req(priv
,
2952 (struct ieee80211_mgmt
*)scan
->data
,
2953 priv
->scan_request
->ie
,
2954 priv
->scan_request
->ie_len
,
2955 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2957 /* select Rx antennas */
2958 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2960 if (iwl_is_monitor_mode(priv
))
2961 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
2963 scan
->channel_count
=
2964 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2965 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
2967 if (scan
->channel_count
== 0) {
2968 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
2972 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
2973 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
2975 scan
->len
= cpu_to_le16(cmd
.len
);
2977 set_bit(STATUS_SCAN_HW
, &priv
->status
);
2978 rc
= iwl_send_cmd_sync(priv
, &cmd
);
2982 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
2983 IWL_SCAN_CHECK_WATCHDOG
);
2985 mutex_unlock(&priv
->mutex
);
2989 /* can not perform scan make sure we clear scanning
2990 * bits from status so next scan request can be performed.
2991 * if we dont clear scanning status bit here all next scan
2994 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
2995 clear_bit(STATUS_SCANNING
, &priv
->status
);
2997 /* inform mac80211 scan aborted */
2998 queue_work(priv
->workqueue
, &priv
->scan_completed
);
2999 mutex_unlock(&priv
->mutex
);
3002 static void iwl3945_bg_up(struct work_struct
*data
)
3004 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
3006 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3009 mutex_lock(&priv
->mutex
);
3011 mutex_unlock(&priv
->mutex
);
3014 static void iwl3945_bg_restart(struct work_struct
*data
)
3016 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3018 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3021 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3022 mutex_lock(&priv
->mutex
);
3025 mutex_unlock(&priv
->mutex
);
3027 ieee80211_restart_hw(priv
->hw
);
3030 queue_work(priv
->workqueue
, &priv
->up
);
3034 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3036 struct iwl_priv
*priv
=
3037 container_of(data
, struct iwl_priv
, rx_replenish
);
3039 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3042 mutex_lock(&priv
->mutex
);
3043 iwl3945_rx_replenish(priv
);
3044 mutex_unlock(&priv
->mutex
);
3047 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3049 void iwl3945_post_associate(struct iwl_priv
*priv
)
3052 struct ieee80211_conf
*conf
= NULL
;
3054 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
3055 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3060 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3061 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
3063 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3066 if (!priv
->vif
|| !priv
->is_open
)
3069 iwl_scan_cancel_timeout(priv
, 200);
3071 conf
= ieee80211_get_hw_conf(priv
->hw
);
3073 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3074 iwlcore_commit_rxon(priv
);
3076 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3077 iwl_setup_rxon_timing(priv
);
3078 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3079 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3081 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3082 "Attempting to continue.\n");
3084 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3086 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3088 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3089 priv
->assoc_id
, priv
->beacon_int
);
3091 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3092 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3094 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3096 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3097 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3098 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3100 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3102 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3103 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3107 iwlcore_commit_rxon(priv
);
3109 switch (priv
->iw_mode
) {
3110 case NL80211_IFTYPE_STATION
:
3111 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3114 case NL80211_IFTYPE_ADHOC
:
3117 iwl_add_station(priv
, priv
->bssid
, 0, CMD_SYNC
, NULL
);
3118 iwl3945_sync_sta(priv
, IWL_STA_ID
,
3119 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
3120 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
3122 iwl3945_rate_scale_init(priv
->hw
, IWL_STA_ID
);
3123 iwl3945_send_beacon_cmd(priv
);
3128 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3129 __func__
, priv
->iw_mode
);
3133 iwl_activate_qos(priv
, 0);
3135 /* we have just associated, don't start scan too early */
3136 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
3139 /*****************************************************************************
3141 * mac80211 entry point functions
3143 *****************************************************************************/
3145 #define UCODE_READY_TIMEOUT (2 * HZ)
3147 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3149 struct iwl_priv
*priv
= hw
->priv
;
3152 IWL_DEBUG_MAC80211(priv
, "enter\n");
3154 /* we should be verifying the device is ready to be opened */
3155 mutex_lock(&priv
->mutex
);
3157 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3158 * ucode filename and max sizes are card-specific. */
3160 if (!priv
->ucode_code
.len
) {
3161 ret
= iwl3945_read_ucode(priv
);
3163 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3164 mutex_unlock(&priv
->mutex
);
3165 goto out_release_irq
;
3169 ret
= __iwl3945_up(priv
);
3171 mutex_unlock(&priv
->mutex
);
3174 goto out_release_irq
;
3176 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3178 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3179 * mac80211 will not be run successfully. */
3180 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3181 test_bit(STATUS_READY
, &priv
->status
),
3182 UCODE_READY_TIMEOUT
);
3184 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3186 "Wait for START_ALIVE timeout after %dms.\n",
3187 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3189 goto out_release_irq
;
3193 /* ucode is running and will send rfkill notifications,
3194 * no need to poll the killswitch state anymore */
3195 cancel_delayed_work(&priv
->rfkill_poll
);
3197 iwl_led_start(priv
);
3200 IWL_DEBUG_MAC80211(priv
, "leave\n");
3205 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3209 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3211 struct iwl_priv
*priv
= hw
->priv
;
3213 IWL_DEBUG_MAC80211(priv
, "enter\n");
3215 if (!priv
->is_open
) {
3216 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3222 if (iwl_is_ready_rf(priv
)) {
3223 /* stop mac, cancel any scan request and clear
3224 * RXON_FILTER_ASSOC_MSK BIT
3226 mutex_lock(&priv
->mutex
);
3227 iwl_scan_cancel_timeout(priv
, 100);
3228 mutex_unlock(&priv
->mutex
);
3233 flush_workqueue(priv
->workqueue
);
3235 /* start polling the killswitch state again */
3236 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
3237 round_jiffies_relative(2 * HZ
));
3239 IWL_DEBUG_MAC80211(priv
, "leave\n");
3242 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3244 struct iwl_priv
*priv
= hw
->priv
;
3246 IWL_DEBUG_MAC80211(priv
, "enter\n");
3248 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3249 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3251 if (iwl3945_tx_skb(priv
, skb
))
3252 dev_kfree_skb_any(skb
);
3254 IWL_DEBUG_MAC80211(priv
, "leave\n");
3255 return NETDEV_TX_OK
;
3258 void iwl3945_config_ap(struct iwl_priv
*priv
)
3262 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3265 /* The following should be done only at AP bring up */
3266 if (!(iwl_is_associated(priv
))) {
3268 /* RXON - unassoc (to set timing command) */
3269 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3270 iwlcore_commit_rxon(priv
);
3273 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
3274 iwl_setup_rxon_timing(priv
);
3275 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3276 sizeof(priv
->rxon_timing
),
3277 &priv
->rxon_timing
);
3279 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3280 "Attempting to continue.\n");
3282 /* FIXME: what should be the assoc_id for AP? */
3283 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
3284 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
3285 priv
->staging_rxon
.flags
|=
3286 RXON_FLG_SHORT_PREAMBLE_MSK
;
3288 priv
->staging_rxon
.flags
&=
3289 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3291 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3292 if (priv
->assoc_capability
&
3293 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3294 priv
->staging_rxon
.flags
|=
3295 RXON_FLG_SHORT_SLOT_MSK
;
3297 priv
->staging_rxon
.flags
&=
3298 ~RXON_FLG_SHORT_SLOT_MSK
;
3300 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
3301 priv
->staging_rxon
.flags
&=
3302 ~RXON_FLG_SHORT_SLOT_MSK
;
3304 /* restore RXON assoc */
3305 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3306 iwlcore_commit_rxon(priv
);
3307 iwl_add_station(priv
, iwl_bcast_addr
, 0, CMD_SYNC
, NULL
);
3309 iwl3945_send_beacon_cmd(priv
);
3311 /* FIXME - we need to add code here to detect a totally new
3312 * configuration, reset the AP, unassoc, rxon timing, assoc,
3313 * clear sta table, add BCAST sta... */
3316 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3317 struct ieee80211_vif
*vif
,
3318 struct ieee80211_sta
*sta
,
3319 struct ieee80211_key_conf
*key
)
3321 struct iwl_priv
*priv
= hw
->priv
;
3324 u8 sta_id
= IWL_INVALID_STATION
;
3327 IWL_DEBUG_MAC80211(priv
, "enter\n");
3329 if (iwl3945_mod_params
.sw_crypto
) {
3330 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3334 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
3335 static_key
= !iwl_is_associated(priv
);
3338 sta_id
= iwl_find_station(priv
, addr
);
3339 if (sta_id
== IWL_INVALID_STATION
) {
3340 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
3346 mutex_lock(&priv
->mutex
);
3347 iwl_scan_cancel_timeout(priv
, 100);
3348 mutex_unlock(&priv
->mutex
);
3353 ret
= iwl3945_set_static_key(priv
, key
);
3355 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3356 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3360 ret
= iwl3945_remove_static_key(priv
);
3362 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3363 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3369 IWL_DEBUG_MAC80211(priv
, "leave\n");
3374 /*****************************************************************************
3378 *****************************************************************************/
3380 #ifdef CONFIG_IWLWIFI_DEBUG
3383 * The following adds a new attribute to the sysfs representation
3384 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3385 * used for controlling the debug level.
3387 * See the level definitions in iwl for details.
3389 * The debug_level being managed using sysfs below is a per device debug
3390 * level that is used instead of the global debug level if it (the per
3391 * device debug level) is set.
3393 static ssize_t
show_debug_level(struct device
*d
,
3394 struct device_attribute
*attr
, char *buf
)
3396 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3397 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3399 static ssize_t
store_debug_level(struct device
*d
,
3400 struct device_attribute
*attr
,
3401 const char *buf
, size_t count
)
3403 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3407 ret
= strict_strtoul(buf
, 0, &val
);
3409 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3411 priv
->debug_level
= val
;
3412 if (iwl_alloc_traffic_mem(priv
))
3414 "Not enough memory to generate traffic log\n");
3416 return strnlen(buf
, count
);
3419 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3420 show_debug_level
, store_debug_level
);
3422 #endif /* CONFIG_IWLWIFI_DEBUG */
3424 static ssize_t
show_temperature(struct device
*d
,
3425 struct device_attribute
*attr
, char *buf
)
3427 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3429 if (!iwl_is_alive(priv
))
3432 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3435 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3437 static ssize_t
show_tx_power(struct device
*d
,
3438 struct device_attribute
*attr
, char *buf
)
3440 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3441 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3444 static ssize_t
store_tx_power(struct device
*d
,
3445 struct device_attribute
*attr
,
3446 const char *buf
, size_t count
)
3448 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3449 char *p
= (char *)buf
;
3452 val
= simple_strtoul(p
, &p
, 10);
3454 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3456 iwl3945_hw_reg_set_txpower(priv
, val
);
3461 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3463 static ssize_t
show_flags(struct device
*d
,
3464 struct device_attribute
*attr
, char *buf
)
3466 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3468 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3471 static ssize_t
store_flags(struct device
*d
,
3472 struct device_attribute
*attr
,
3473 const char *buf
, size_t count
)
3475 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3476 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3478 mutex_lock(&priv
->mutex
);
3479 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3480 /* Cancel any currently running scans... */
3481 if (iwl_scan_cancel_timeout(priv
, 100))
3482 IWL_WARN(priv
, "Could not cancel scan.\n");
3484 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3486 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3487 iwlcore_commit_rxon(priv
);
3490 mutex_unlock(&priv
->mutex
);
3495 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3497 static ssize_t
show_filter_flags(struct device
*d
,
3498 struct device_attribute
*attr
, char *buf
)
3500 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3502 return sprintf(buf
, "0x%04X\n",
3503 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3506 static ssize_t
store_filter_flags(struct device
*d
,
3507 struct device_attribute
*attr
,
3508 const char *buf
, size_t count
)
3510 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3511 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3513 mutex_lock(&priv
->mutex
);
3514 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3515 /* Cancel any currently running scans... */
3516 if (iwl_scan_cancel_timeout(priv
, 100))
3517 IWL_WARN(priv
, "Could not cancel scan.\n");
3519 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3520 "0x%04X\n", filter_flags
);
3521 priv
->staging_rxon
.filter_flags
=
3522 cpu_to_le32(filter_flags
);
3523 iwlcore_commit_rxon(priv
);
3526 mutex_unlock(&priv
->mutex
);
3531 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3532 store_filter_flags
);
3534 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3536 static ssize_t
show_measurement(struct device
*d
,
3537 struct device_attribute
*attr
, char *buf
)
3539 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3540 struct iwl_spectrum_notification measure_report
;
3541 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3542 u8
*data
= (u8
*)&measure_report
;
3543 unsigned long flags
;
3545 spin_lock_irqsave(&priv
->lock
, flags
);
3546 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3547 spin_unlock_irqrestore(&priv
->lock
, flags
);
3550 memcpy(&measure_report
, &priv
->measure_report
, size
);
3551 priv
->measurement_status
= 0;
3552 spin_unlock_irqrestore(&priv
->lock
, flags
);
3554 while (size
&& (PAGE_SIZE
- len
)) {
3555 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3556 PAGE_SIZE
- len
, 1);
3558 if (PAGE_SIZE
- len
)
3562 size
-= min(size
, 16U);
3568 static ssize_t
store_measurement(struct device
*d
,
3569 struct device_attribute
*attr
,
3570 const char *buf
, size_t count
)
3572 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3573 struct ieee80211_measurement_params params
= {
3574 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
3575 .start_time
= cpu_to_le64(priv
->last_tsf
),
3576 .duration
= cpu_to_le16(1),
3578 u8 type
= IWL_MEASURE_BASIC
;
3584 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3585 channel
= simple_strtoul(p
, NULL
, 0);
3587 params
.channel
= channel
;
3590 while (*p
&& *p
!= ' ')
3593 type
= simple_strtoul(p
+ 1, NULL
, 0);
3596 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3597 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3598 iwl3945_get_measurement(priv
, ¶ms
, type
);
3603 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3604 show_measurement
, store_measurement
);
3605 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3607 static ssize_t
store_retry_rate(struct device
*d
,
3608 struct device_attribute
*attr
,
3609 const char *buf
, size_t count
)
3611 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3613 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3614 if (priv
->retry_rate
<= 0)
3615 priv
->retry_rate
= 1;
3620 static ssize_t
show_retry_rate(struct device
*d
,
3621 struct device_attribute
*attr
, char *buf
)
3623 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3624 return sprintf(buf
, "%d", priv
->retry_rate
);
3627 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3631 static ssize_t
show_channels(struct device
*d
,
3632 struct device_attribute
*attr
, char *buf
)
3634 /* all this shit doesn't belong into sysfs anyway */
3638 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3640 static ssize_t
show_statistics(struct device
*d
,
3641 struct device_attribute
*attr
, char *buf
)
3643 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3644 u32 size
= sizeof(struct iwl3945_notif_statistics
);
3645 u32 len
= 0, ofs
= 0;
3646 u8
*data
= (u8
*)&priv
->statistics_39
;
3649 if (!iwl_is_alive(priv
))
3652 mutex_lock(&priv
->mutex
);
3653 rc
= iwl_send_statistics_request(priv
, 0);
3654 mutex_unlock(&priv
->mutex
);
3658 "Error sending statistics request: 0x%08X\n", rc
);
3662 while (size
&& (PAGE_SIZE
- len
)) {
3663 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3664 PAGE_SIZE
- len
, 1);
3666 if (PAGE_SIZE
- len
)
3670 size
-= min(size
, 16U);
3676 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3678 static ssize_t
show_antenna(struct device
*d
,
3679 struct device_attribute
*attr
, char *buf
)
3681 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3683 if (!iwl_is_alive(priv
))
3686 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3689 static ssize_t
store_antenna(struct device
*d
,
3690 struct device_attribute
*attr
,
3691 const char *buf
, size_t count
)
3693 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3699 if (sscanf(buf
, "%1i", &ant
) != 1) {
3700 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3704 if ((ant
>= 0) && (ant
<= 2)) {
3705 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3706 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3708 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3714 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3716 static ssize_t
show_status(struct device
*d
,
3717 struct device_attribute
*attr
, char *buf
)
3719 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3720 if (!iwl_is_alive(priv
))
3722 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3725 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3727 static ssize_t
dump_error_log(struct device
*d
,
3728 struct device_attribute
*attr
,
3729 const char *buf
, size_t count
)
3731 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3732 char *p
= (char *)buf
;
3735 iwl3945_dump_nic_error_log(priv
);
3737 return strnlen(buf
, count
);
3740 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3742 /*****************************************************************************
3744 * driver setup and tear down
3746 *****************************************************************************/
3748 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3750 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3752 init_waitqueue_head(&priv
->wait_command_queue
);
3754 INIT_WORK(&priv
->up
, iwl3945_bg_up
);
3755 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3756 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3757 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3758 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3759 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3760 INIT_DELAYED_WORK(&priv
->rfkill_poll
, iwl3945_rfkill_poll
);
3761 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
3762 INIT_WORK(&priv
->request_scan
, iwl3945_bg_request_scan
);
3763 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
3764 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
3766 iwl3945_hw_setup_deferred_work(priv
);
3768 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3769 iwl3945_irq_tasklet
, (unsigned long)priv
);
3772 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3774 iwl3945_hw_cancel_deferred_work(priv
);
3776 cancel_delayed_work_sync(&priv
->init_alive_start
);
3777 cancel_delayed_work(&priv
->scan_check
);
3778 cancel_delayed_work(&priv
->alive_start
);
3779 cancel_work_sync(&priv
->beacon_update
);
3782 static struct attribute
*iwl3945_sysfs_entries
[] = {
3783 &dev_attr_antenna
.attr
,
3784 &dev_attr_channels
.attr
,
3785 &dev_attr_dump_errors
.attr
,
3786 &dev_attr_flags
.attr
,
3787 &dev_attr_filter_flags
.attr
,
3788 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3789 &dev_attr_measurement
.attr
,
3791 &dev_attr_retry_rate
.attr
,
3792 &dev_attr_statistics
.attr
,
3793 &dev_attr_status
.attr
,
3794 &dev_attr_temperature
.attr
,
3795 &dev_attr_tx_power
.attr
,
3796 #ifdef CONFIG_IWLWIFI_DEBUG
3797 &dev_attr_debug_level
.attr
,
3802 static struct attribute_group iwl3945_attribute_group
= {
3803 .name
= NULL
, /* put in device directory */
3804 .attrs
= iwl3945_sysfs_entries
,
3807 static struct ieee80211_ops iwl3945_hw_ops
= {
3808 .tx
= iwl3945_mac_tx
,
3809 .start
= iwl3945_mac_start
,
3810 .stop
= iwl3945_mac_stop
,
3811 .add_interface
= iwl_mac_add_interface
,
3812 .remove_interface
= iwl_mac_remove_interface
,
3813 .config
= iwl_mac_config
,
3814 .configure_filter
= iwl_configure_filter
,
3815 .set_key
= iwl3945_mac_set_key
,
3816 .get_tx_stats
= iwl_mac_get_tx_stats
,
3817 .conf_tx
= iwl_mac_conf_tx
,
3818 .reset_tsf
= iwl_mac_reset_tsf
,
3819 .bss_info_changed
= iwl_bss_info_changed
,
3820 .hw_scan
= iwl_mac_hw_scan
3823 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3826 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3828 priv
->retry_rate
= 1;
3829 priv
->ibss_beacon
= NULL
;
3831 spin_lock_init(&priv
->lock
);
3832 spin_lock_init(&priv
->sta_lock
);
3833 spin_lock_init(&priv
->hcmd_lock
);
3835 INIT_LIST_HEAD(&priv
->free_frames
);
3837 mutex_init(&priv
->mutex
);
3839 /* Clear the driver's (not device's) station table */
3840 iwl_clear_stations_table(priv
);
3842 priv
->ieee_channels
= NULL
;
3843 priv
->ieee_rates
= NULL
;
3844 priv
->band
= IEEE80211_BAND_2GHZ
;
3846 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3848 iwl_reset_qos(priv
);
3850 priv
->qos_data
.qos_active
= 0;
3851 priv
->qos_data
.qos_cap
.val
= 0;
3853 priv
->rates_mask
= IWL_RATES_MASK
;
3854 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3856 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3857 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3862 ret
= iwl_init_channel_map(priv
);
3864 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3868 /* Set up txpower settings in driver for all channels */
3869 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3871 goto err_free_channel_map
;
3874 ret
= iwlcore_init_geos(priv
);
3876 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3877 goto err_free_channel_map
;
3879 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3883 err_free_channel_map
:
3884 iwl_free_channel_map(priv
);
3889 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3892 struct ieee80211_hw
*hw
= priv
->hw
;
3894 hw
->rate_control_algorithm
= "iwl-3945-rs";
3895 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3897 /* Tell mac80211 our characteristics */
3898 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3899 IEEE80211_HW_NOISE_DBM
|
3900 IEEE80211_HW_SPECTRUM_MGMT
|
3901 IEEE80211_HW_SUPPORTS_PS
|
3902 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3904 hw
->wiphy
->interface_modes
=
3905 BIT(NL80211_IFTYPE_STATION
) |
3906 BIT(NL80211_IFTYPE_ADHOC
);
3908 hw
->wiphy
->custom_regulatory
= true;
3910 /* Firmware does not support this */
3911 hw
->wiphy
->disable_beacon_hints
= true;
3913 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3914 /* we create the 802.11 header and a zero-length SSID element */
3915 hw
->wiphy
->max_scan_ie_len
= IWL_MAX_PROBE_REQUEST
- 24 - 2;
3917 /* Default value; 4 EDCA QOS priorities */
3920 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3921 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3922 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3924 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3925 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3926 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3928 ret
= ieee80211_register_hw(priv
->hw
);
3930 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3933 priv
->mac80211_registered
= 1;
3938 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3941 struct iwl_priv
*priv
;
3942 struct ieee80211_hw
*hw
;
3943 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3944 struct iwl3945_eeprom
*eeprom
;
3945 unsigned long flags
;
3947 /***********************
3948 * 1. Allocating HW data
3949 * ********************/
3951 /* mac80211 allocates memory for this device instance, including
3952 * space for this driver's private structure */
3953 hw
= iwl_alloc_all(cfg
, &iwl3945_hw_ops
);
3955 printk(KERN_ERR DRV_NAME
"Can not allocate network device\n");
3960 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3963 * Disabling hardware scan means that mac80211 will perform scans
3964 * "the hard way", rather than using device's scan.
3966 if (iwl3945_mod_params
.disable_hw_scan
) {
3967 IWL_DEBUG_INFO(priv
, "Disabling hw_scan\n");
3968 iwl3945_hw_ops
.hw_scan
= NULL
;
3972 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3974 priv
->pci_dev
= pdev
;
3975 priv
->inta_mask
= CSR_INI_SET_MASK
;
3977 #ifdef CONFIG_IWLWIFI_DEBUG
3978 atomic_set(&priv
->restrict_refcnt
, 0);
3980 if (iwl_alloc_traffic_mem(priv
))
3981 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3983 /***************************
3984 * 2. Initializing PCI bus
3985 * *************************/
3986 if (pci_enable_device(pdev
)) {
3988 goto out_ieee80211_free_hw
;
3991 pci_set_master(pdev
);
3993 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3995 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3997 IWL_WARN(priv
, "No suitable DMA available.\n");
3998 goto out_pci_disable_device
;
4001 pci_set_drvdata(pdev
, priv
);
4002 err
= pci_request_regions(pdev
, DRV_NAME
);
4004 goto out_pci_disable_device
;
4006 /***********************
4007 * 3. Read REV Register
4008 * ********************/
4009 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4010 if (!priv
->hw_base
) {
4012 goto out_pci_release_regions
;
4015 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4016 (unsigned long long) pci_resource_len(pdev
, 0));
4017 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4019 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4020 * PCI Tx retries from interfering with C3 CPU state */
4021 pci_write_config_byte(pdev
, 0x41, 0x00);
4023 /* this spin lock will be used in apm_ops.init and EEPROM access
4024 * we should init now
4026 spin_lock_init(&priv
->reg_lock
);
4028 /***********************
4030 * ********************/
4032 /* Read the EEPROM */
4033 err
= iwl_eeprom_init(priv
);
4035 IWL_ERR(priv
, "Unable to init EEPROM\n");
4038 /* MAC Address location in EEPROM same for 3945/4965 */
4039 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4040 memcpy(priv
->mac_addr
, eeprom
->mac_address
, ETH_ALEN
);
4041 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
4042 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
4044 /***********************
4045 * 5. Setup HW Constants
4046 * ********************/
4047 /* Device-specific setup */
4048 if (iwl3945_hw_set_hw_params(priv
)) {
4049 IWL_ERR(priv
, "failed to set hw settings\n");
4050 goto out_eeprom_free
;
4053 /***********************
4055 * ********************/
4057 err
= iwl3945_init_drv(priv
);
4059 IWL_ERR(priv
, "initializing driver failed\n");
4060 goto out_unset_hw_params
;
4063 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4066 /***********************
4068 * ********************/
4070 spin_lock_irqsave(&priv
->lock
, flags
);
4071 iwl_disable_interrupts(priv
);
4072 spin_unlock_irqrestore(&priv
->lock
, flags
);
4074 pci_enable_msi(priv
->pci_dev
);
4076 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4077 IRQF_SHARED
, DRV_NAME
, priv
);
4079 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4080 goto out_disable_msi
;
4083 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4085 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4086 goto out_release_irq
;
4089 iwl_set_rxon_channel(priv
,
4090 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
4091 iwl3945_setup_deferred_work(priv
);
4092 iwl3945_setup_rx_handlers(priv
);
4093 iwl_power_initialize(priv
);
4095 /*********************************
4096 * 8. Setup and Register mac80211
4097 * *******************************/
4099 iwl_enable_interrupts(priv
);
4101 err
= iwl3945_setup_mac(priv
);
4103 goto out_remove_sysfs
;
4105 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4107 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4109 /* Start monitoring the killswitch */
4110 queue_delayed_work(priv
->workqueue
, &priv
->rfkill_poll
,
4116 destroy_workqueue(priv
->workqueue
);
4117 priv
->workqueue
= NULL
;
4118 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4120 free_irq(priv
->pci_dev
->irq
, priv
);
4122 pci_disable_msi(priv
->pci_dev
);
4123 iwlcore_free_geos(priv
);
4124 iwl_free_channel_map(priv
);
4125 out_unset_hw_params
:
4126 iwl3945_unset_hw_params(priv
);
4128 iwl_eeprom_free(priv
);
4130 pci_iounmap(pdev
, priv
->hw_base
);
4131 out_pci_release_regions
:
4132 pci_release_regions(pdev
);
4133 out_pci_disable_device
:
4134 pci_set_drvdata(pdev
, NULL
);
4135 pci_disable_device(pdev
);
4136 out_ieee80211_free_hw
:
4137 iwl_free_traffic_mem(priv
);
4138 ieee80211_free_hw(priv
->hw
);
4143 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4145 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4146 unsigned long flags
;
4151 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4153 iwl_dbgfs_unregister(priv
);
4155 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4157 if (priv
->mac80211_registered
) {
4158 ieee80211_unregister_hw(priv
->hw
);
4159 priv
->mac80211_registered
= 0;
4165 * Make sure device is reset to low power before unloading driver.
4166 * This may be redundant with iwl_down(), but there are paths to
4167 * run iwl_down() without calling apm_ops.stop(), and there are
4168 * paths to avoid running iwl_down() at all before leaving driver.
4169 * This (inexpensive) call *makes sure* device is reset.
4171 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
4173 /* make sure we flush any pending irq or
4174 * tasklet for the driver
4176 spin_lock_irqsave(&priv
->lock
, flags
);
4177 iwl_disable_interrupts(priv
);
4178 spin_unlock_irqrestore(&priv
->lock
, flags
);
4180 iwl_synchronize_irq(priv
);
4182 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4184 cancel_delayed_work_sync(&priv
->rfkill_poll
);
4186 iwl3945_dealloc_ucode_pci(priv
);
4189 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4190 iwl3945_hw_txq_ctx_free(priv
);
4192 iwl3945_unset_hw_params(priv
);
4193 iwl_clear_stations_table(priv
);
4195 /*netif_stop_queue(dev); */
4196 flush_workqueue(priv
->workqueue
);
4198 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4199 * priv->workqueue... so we can't take down the workqueue
4201 destroy_workqueue(priv
->workqueue
);
4202 priv
->workqueue
= NULL
;
4203 iwl_free_traffic_mem(priv
);
4205 free_irq(pdev
->irq
, priv
);
4206 pci_disable_msi(pdev
);
4208 pci_iounmap(pdev
, priv
->hw_base
);
4209 pci_release_regions(pdev
);
4210 pci_disable_device(pdev
);
4211 pci_set_drvdata(pdev
, NULL
);
4213 iwl_free_channel_map(priv
);
4214 iwlcore_free_geos(priv
);
4216 if (priv
->ibss_beacon
)
4217 dev_kfree_skb(priv
->ibss_beacon
);
4219 ieee80211_free_hw(priv
->hw
);
4223 /*****************************************************************************
4225 * driver and module entry point
4227 *****************************************************************************/
4229 static struct pci_driver iwl3945_driver
= {
4231 .id_table
= iwl3945_hw_card_ids
,
4232 .probe
= iwl3945_pci_probe
,
4233 .remove
= __devexit_p(iwl3945_pci_remove
),
4235 .suspend
= iwl_pci_suspend
,
4236 .resume
= iwl_pci_resume
,
4240 static int __init
iwl3945_init(void)
4244 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4245 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4247 ret
= iwl3945_rate_control_register();
4249 printk(KERN_ERR DRV_NAME
4250 "Unable to register rate control algorithm: %d\n", ret
);
4254 ret
= pci_register_driver(&iwl3945_driver
);
4256 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4257 goto error_register
;
4263 iwl3945_rate_control_unregister();
4267 static void __exit
iwl3945_exit(void)
4269 pci_unregister_driver(&iwl3945_driver
);
4270 iwl3945_rate_control_unregister();
4273 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4275 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, S_IRUGO
);
4276 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4277 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, S_IRUGO
);
4278 MODULE_PARM_DESC(swcrypto
,
4279 "using software crypto (default 1 [software])\n");
4280 #ifdef CONFIG_IWLWIFI_DEBUG
4281 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4282 MODULE_PARM_DESC(debug
, "debug output mask");
4284 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
,
4286 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4287 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, S_IRUGO
);
4288 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4290 module_exit(iwl3945_exit
);
4291 module_init(iwl3945_init
);