1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/firmware.h>
45 #include <linux/etherdevice.h>
46 #include <linux/if_arp.h>
48 #include <net/ieee80211_radiotap.h>
49 #include <net/mac80211.h>
51 #include <asm/div64.h>
53 #define DRV_NAME "iwl3945"
56 #include "iwl-3945-fh.h"
57 #include "iwl-commands.h"
61 #include "iwl-helpers.h"
63 #include "iwl-spectrum.h"
66 * module name, copyright, version, etc.
69 #define DRV_DESCRIPTION \
70 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
72 #ifdef CONFIG_IWLWIFI_DEBUG
79 * add "s" to indicate spectrum measurement included.
80 * we add it here to be consistent with previous releases in which
81 * this was configurable.
83 #define DRV_VERSION IWLWIFI_VERSION VD "s"
84 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
85 #define DRV_AUTHOR "<ilw@linux.intel.com>"
87 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
88 MODULE_VERSION(DRV_VERSION
);
89 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
90 MODULE_LICENSE("GPL");
92 /* module parameters */
93 struct iwl_mod_params iwl3945_mod_params
= {
96 /* the rest are 0 by default */
100 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
101 * @priv: eeprom and antenna fields are used to determine antenna flags
103 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
104 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
106 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
107 * IWL_ANTENNA_MAIN - Force MAIN antenna
108 * IWL_ANTENNA_AUX - Force AUX antenna
110 __le32
iwl3945_get_antenna_flags(const struct iwl_priv
*priv
)
112 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
114 switch (iwl3945_mod_params
.antenna
) {
115 case IWL_ANTENNA_DIVERSITY
:
118 case IWL_ANTENNA_MAIN
:
119 if (eeprom
->antenna_switch_type
)
120 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
121 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
123 case IWL_ANTENNA_AUX
:
124 if (eeprom
->antenna_switch_type
)
125 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
126 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
129 /* bad antenna selector value */
130 IWL_ERR(priv
, "Bad antenna selector value (0x%x)\n",
131 iwl3945_mod_params
.antenna
);
133 return 0; /* "diversity" is default if error */
136 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
137 struct ieee80211_key_conf
*keyconf
,
141 __le16 key_flags
= 0;
144 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
145 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
147 if (sta_id
== priv
->contexts
[IWL_RXON_CTX_BSS
].bcast_sta_id
)
148 key_flags
|= STA_KEY_MULTICAST_MSK
;
150 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
151 keyconf
->hw_key_idx
= keyconf
->keyidx
;
152 key_flags
&= ~STA_KEY_FLG_INVALID
;
154 spin_lock_irqsave(&priv
->sta_lock
, flags
);
155 priv
->stations
[sta_id
].keyinfo
.cipher
= keyconf
->cipher
;
156 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
157 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
160 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
163 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
164 == STA_KEY_FLG_NO_ENC
)
165 priv
->stations
[sta_id
].sta
.key
.key_offset
=
166 iwl_get_free_ucode_key_index(priv
);
167 /* else, we are overriding an existing key => no need to allocated room
170 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
171 "no space for a new key");
173 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
174 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
175 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
177 IWL_DEBUG_INFO(priv
, "hwcrypto: modify ucode station key info\n");
179 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
181 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
186 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
187 struct ieee80211_key_conf
*keyconf
,
193 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
194 struct ieee80211_key_conf
*keyconf
,
200 static int iwl3945_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
203 struct iwl_addsta_cmd sta_cmd
;
205 spin_lock_irqsave(&priv
->sta_lock
, flags
);
206 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
207 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
208 sizeof(struct iwl4965_keyinfo
));
209 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
210 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
211 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
212 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(struct iwl_addsta_cmd
));
213 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
215 IWL_DEBUG_INFO(priv
, "hwcrypto: clear ucode station key info\n");
216 return iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
219 static int iwl3945_set_dynamic_key(struct iwl_priv
*priv
,
220 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
224 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
226 switch (keyconf
->cipher
) {
227 case WLAN_CIPHER_SUITE_CCMP
:
228 ret
= iwl3945_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
230 case WLAN_CIPHER_SUITE_TKIP
:
231 ret
= iwl3945_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
233 case WLAN_CIPHER_SUITE_WEP40
:
234 case WLAN_CIPHER_SUITE_WEP104
:
235 ret
= iwl3945_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
238 IWL_ERR(priv
, "Unknown alg: %s alg=%x\n", __func__
,
243 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
244 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
250 static int iwl3945_remove_static_key(struct iwl_priv
*priv
)
252 int ret
= -EOPNOTSUPP
;
257 static int iwl3945_set_static_key(struct iwl_priv
*priv
,
258 struct ieee80211_key_conf
*key
)
260 if (key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
261 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
)
264 IWL_ERR(priv
, "Static key invalid: cipher %x\n", key
->cipher
);
268 static void iwl3945_clear_free_frames(struct iwl_priv
*priv
)
270 struct list_head
*element
;
272 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
275 while (!list_empty(&priv
->free_frames
)) {
276 element
= priv
->free_frames
.next
;
278 kfree(list_entry(element
, struct iwl3945_frame
, list
));
279 priv
->frames_count
--;
282 if (priv
->frames_count
) {
283 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
285 priv
->frames_count
= 0;
289 static struct iwl3945_frame
*iwl3945_get_free_frame(struct iwl_priv
*priv
)
291 struct iwl3945_frame
*frame
;
292 struct list_head
*element
;
293 if (list_empty(&priv
->free_frames
)) {
294 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
296 IWL_ERR(priv
, "Could not allocate frame!\n");
300 priv
->frames_count
++;
304 element
= priv
->free_frames
.next
;
306 return list_entry(element
, struct iwl3945_frame
, list
);
309 static void iwl3945_free_frame(struct iwl_priv
*priv
, struct iwl3945_frame
*frame
)
311 memset(frame
, 0, sizeof(*frame
));
312 list_add(&frame
->list
, &priv
->free_frames
);
315 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv
*priv
,
316 struct ieee80211_hdr
*hdr
,
320 if (!iwl_is_associated(priv
, IWL_RXON_CTX_BSS
) || !priv
->beacon_skb
)
323 if (priv
->beacon_skb
->len
> left
)
326 memcpy(hdr
, priv
->beacon_skb
->data
, priv
->beacon_skb
->len
);
328 return priv
->beacon_skb
->len
;
331 static int iwl3945_send_beacon_cmd(struct iwl_priv
*priv
)
333 struct iwl3945_frame
*frame
;
334 unsigned int frame_size
;
338 frame
= iwl3945_get_free_frame(priv
);
341 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
346 rate
= iwl_rate_get_lowest_plcp(priv
,
347 &priv
->contexts
[IWL_RXON_CTX_BSS
]);
349 frame_size
= iwl3945_hw_get_beacon_cmd(priv
, frame
, rate
);
351 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
354 iwl3945_free_frame(priv
, frame
);
359 static void iwl3945_unset_hw_params(struct iwl_priv
*priv
)
361 if (priv
->_3945
.shared_virt
)
362 dma_free_coherent(&priv
->pci_dev
->dev
,
363 sizeof(struct iwl3945_shared
),
364 priv
->_3945
.shared_virt
,
365 priv
->_3945
.shared_phys
);
368 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
369 struct ieee80211_tx_info
*info
,
370 struct iwl_device_cmd
*cmd
,
371 struct sk_buff
*skb_frag
,
374 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
375 struct iwl_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
379 switch (keyinfo
->cipher
) {
380 case WLAN_CIPHER_SUITE_CCMP
:
381 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
382 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
383 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
386 case WLAN_CIPHER_SUITE_TKIP
:
389 case WLAN_CIPHER_SUITE_WEP104
:
390 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
392 case WLAN_CIPHER_SUITE_WEP40
:
393 tx_cmd
->sec_ctl
|= TX_CMD_SEC_WEP
|
394 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
396 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
398 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
399 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
403 IWL_ERR(priv
, "Unknown encode cipher %x\n", keyinfo
->cipher
);
409 * handle build REPLY_TX command notification.
411 static void iwl3945_build_tx_cmd_basic(struct iwl_priv
*priv
,
412 struct iwl_device_cmd
*cmd
,
413 struct ieee80211_tx_info
*info
,
414 struct ieee80211_hdr
*hdr
, u8 std_id
)
416 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
417 __le32 tx_flags
= tx_cmd
->tx_flags
;
418 __le16 fc
= hdr
->frame_control
;
420 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
421 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
422 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
423 if (ieee80211_is_mgmt(fc
))
424 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
425 if (ieee80211_is_probe_resp(fc
) &&
426 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
427 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
429 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
430 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
433 tx_cmd
->sta_id
= std_id
;
434 if (ieee80211_has_morefrags(fc
))
435 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
437 if (ieee80211_is_data_qos(fc
)) {
438 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
439 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
440 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
442 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
445 priv
->cfg
->ops
->utils
->tx_cmd_protection(priv
, info
, fc
, &tx_flags
);
447 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
448 if (ieee80211_is_mgmt(fc
)) {
449 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
450 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
452 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
454 tx_cmd
->timeout
.pm_frame_timeout
= 0;
457 tx_cmd
->driver_txop
= 0;
458 tx_cmd
->tx_flags
= tx_flags
;
459 tx_cmd
->next_frame_len
= 0;
463 * start REPLY_TX command process
465 static int iwl3945_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
467 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
468 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
469 struct iwl3945_tx_cmd
*tx_cmd
;
470 struct iwl_tx_queue
*txq
= NULL
;
471 struct iwl_queue
*q
= NULL
;
472 struct iwl_device_cmd
*out_cmd
;
473 struct iwl_cmd_meta
*out_meta
;
474 dma_addr_t phys_addr
;
475 dma_addr_t txcmd_phys
;
476 int txq_id
= skb_get_queue_mapping(skb
);
477 u16 len
, idx
, len_org
, hdr_len
; /* TODO: len_org is not used */
483 u8 wait_write_ptr
= 0;
486 spin_lock_irqsave(&priv
->lock
, flags
);
487 if (iwl_is_rfkill(priv
)) {
488 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
492 if ((ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
493 IWL_ERR(priv
, "ERROR: No TX rate available.\n");
497 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
500 fc
= hdr
->frame_control
;
502 #ifdef CONFIG_IWLWIFI_DEBUG
503 if (ieee80211_is_auth(fc
))
504 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
505 else if (ieee80211_is_assoc_req(fc
))
506 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
507 else if (ieee80211_is_reassoc_req(fc
))
508 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
511 spin_unlock_irqrestore(&priv
->lock
, flags
);
513 hdr_len
= ieee80211_hdrlen(fc
);
515 /* Find index into station table for destination station */
516 sta_id
= iwl_sta_id_or_broadcast(
517 priv
, &priv
->contexts
[IWL_RXON_CTX_BSS
],
519 if (sta_id
== IWL_INVALID_STATION
) {
520 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
525 IWL_DEBUG_RATE(priv
, "station Id %d\n", sta_id
);
527 if (ieee80211_is_data_qos(fc
)) {
528 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
529 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
530 if (unlikely(tid
>= MAX_TID_COUNT
))
534 /* Descriptor for chosen Tx queue */
535 txq
= &priv
->txq
[txq_id
];
538 if ((iwl_queue_space(q
) < q
->high_mark
))
541 spin_lock_irqsave(&priv
->lock
, flags
);
543 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
545 /* Set up driver data for this TFD */
546 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
547 txq
->txb
[q
->write_ptr
].skb
= skb
;
548 txq
->txb
[q
->write_ptr
].ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
550 /* Init first empty entry in queue's array of Tx/cmd buffers */
551 out_cmd
= txq
->cmd
[idx
];
552 out_meta
= &txq
->meta
[idx
];
553 tx_cmd
= (struct iwl3945_tx_cmd
*)out_cmd
->cmd
.payload
;
554 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
555 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
558 * Set up the Tx-command (not MAC!) header.
559 * Store the chosen Tx queue and TFD index within the sequence field;
560 * after Tx, uCode's Tx response will return this value so driver can
561 * locate the frame within the tx queue and do post-tx processing.
563 out_cmd
->hdr
.cmd
= REPLY_TX
;
564 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
565 INDEX_TO_SEQ(q
->write_ptr
)));
567 /* Copy MAC header from skb into command buffer */
568 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
571 if (info
->control
.hw_key
)
572 iwl3945_build_tx_cmd_hwcrypto(priv
, info
, out_cmd
, skb
, sta_id
);
574 /* TODO need this for burst mode later on */
575 iwl3945_build_tx_cmd_basic(priv
, out_cmd
, info
, hdr
, sta_id
);
577 /* set is_hcca to 0; it probably will never be implemented */
578 iwl3945_hw_build_tx_cmd_rate(priv
, out_cmd
, info
, hdr
, sta_id
, 0);
580 /* Total # bytes to be transmitted */
582 tx_cmd
->len
= cpu_to_le16(len
);
584 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
585 iwl_update_stats(priv
, true, fc
, len
);
586 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
587 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
589 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
590 txq
->need_update
= 1;
593 txq
->need_update
= 0;
596 IWL_DEBUG_TX(priv
, "sequence nr = 0X%x\n",
597 le16_to_cpu(out_cmd
->hdr
.sequence
));
598 IWL_DEBUG_TX(priv
, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd
->tx_flags
));
599 iwl_print_hex_dump(priv
, IWL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
600 iwl_print_hex_dump(priv
, IWL_DL_TX
, (u8
*)tx_cmd
->hdr
,
601 ieee80211_hdrlen(fc
));
604 * Use the first empty entry in this queue's command buffer array
605 * to contain the Tx command and MAC header concatenated together
606 * (payload data will be in another buffer).
607 * Size of this varies, due to varying MAC header length.
608 * If end is not dword aligned, we'll have 2 extra bytes at the end
609 * of the MAC header (device reads on dword boundaries).
610 * We'll tell device about this padding later.
612 len
= sizeof(struct iwl3945_tx_cmd
) +
613 sizeof(struct iwl_cmd_header
) + hdr_len
;
616 len
= (len
+ 3) & ~3;
623 /* Physical address of this Tx command's header (not MAC header!),
624 * within command buffer array. */
625 txcmd_phys
= pci_map_single(priv
->pci_dev
, &out_cmd
->hdr
,
626 len
, PCI_DMA_TODEVICE
);
627 /* we do not map meta data ... so we can safely access address to
628 * provide to unmap command*/
629 dma_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
630 dma_unmap_len_set(out_meta
, len
, len
);
632 /* Add buffer containing Tx command and MAC(!) header to TFD's
634 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
635 txcmd_phys
, len
, 1, 0);
638 /* Set up TFD's 2nd entry to point directly to remainder of skb,
639 * if any (802.11 null frames have no payload). */
640 len
= skb
->len
- hdr_len
;
642 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
643 len
, PCI_DMA_TODEVICE
);
644 priv
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(priv
, txq
,
650 /* Tell device the write index *just past* this latest filled TFD */
651 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
652 iwl_txq_update_write_ptr(priv
, txq
);
653 spin_unlock_irqrestore(&priv
->lock
, flags
);
655 if ((iwl_queue_space(q
) < q
->high_mark
)
656 && priv
->mac80211_registered
) {
657 if (wait_write_ptr
) {
658 spin_lock_irqsave(&priv
->lock
, flags
);
659 txq
->need_update
= 1;
660 iwl_txq_update_write_ptr(priv
, txq
);
661 spin_unlock_irqrestore(&priv
->lock
, flags
);
664 iwl_stop_queue(priv
, skb_get_queue_mapping(skb
));
670 spin_unlock_irqrestore(&priv
->lock
, flags
);
675 static int iwl3945_get_measurement(struct iwl_priv
*priv
,
676 struct ieee80211_measurement_params
*params
,
679 struct iwl_spectrum_cmd spectrum
;
680 struct iwl_rx_packet
*pkt
;
681 struct iwl_host_cmd cmd
= {
682 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
683 .data
= (void *)&spectrum
,
684 .flags
= CMD_WANT_SKB
,
686 u32 add_time
= le64_to_cpu(params
->start_time
);
688 int spectrum_resp_status
;
689 int duration
= le16_to_cpu(params
->duration
);
690 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
692 if (iwl_is_associated(priv
, IWL_RXON_CTX_BSS
))
693 add_time
= iwl_usecs_to_beacons(priv
,
694 le64_to_cpu(params
->start_time
) - priv
->_3945
.last_tsf
,
695 le16_to_cpu(ctx
->timing
.beacon_interval
));
697 memset(&spectrum
, 0, sizeof(spectrum
));
699 spectrum
.channel_count
= cpu_to_le16(1);
701 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
702 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
703 cmd
.len
= sizeof(spectrum
);
704 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
706 if (iwl_is_associated(priv
, IWL_RXON_CTX_BSS
))
707 spectrum
.start_time
=
708 iwl_add_beacon_time(priv
,
709 priv
->_3945
.last_beacon_time
, add_time
,
710 le16_to_cpu(ctx
->timing
.beacon_interval
));
712 spectrum
.start_time
= 0;
714 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
715 spectrum
.channels
[0].channel
= params
->channel
;
716 spectrum
.channels
[0].type
= type
;
717 if (ctx
->active
.flags
& RXON_FLG_BAND_24G_MSK
)
718 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
719 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
721 rc
= iwl_send_cmd_sync(priv
, &cmd
);
725 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
726 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
727 IWL_ERR(priv
, "Bad return from REPLY_RX_ON_ASSOC command\n");
731 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
732 switch (spectrum_resp_status
) {
733 case 0: /* Command will be handled */
734 if (pkt
->u
.spectrum
.id
!= 0xff) {
735 IWL_DEBUG_INFO(priv
, "Replaced existing measurement: %d\n",
737 priv
->measurement_status
&= ~MEASUREMENT_READY
;
739 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
743 case 1: /* Command will not be handled */
748 iwl_free_pages(priv
, cmd
.reply_page
);
753 static void iwl3945_rx_reply_alive(struct iwl_priv
*priv
,
754 struct iwl_rx_mem_buffer
*rxb
)
756 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
757 struct iwl_alive_resp
*palive
;
758 struct delayed_work
*pwork
;
760 palive
= &pkt
->u
.alive_frame
;
762 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
764 palive
->is_valid
, palive
->ver_type
,
765 palive
->ver_subtype
);
767 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
768 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
769 memcpy(&priv
->card_alive_init
, &pkt
->u
.alive_frame
,
770 sizeof(struct iwl_alive_resp
));
771 pwork
= &priv
->init_alive_start
;
773 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
774 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
775 sizeof(struct iwl_alive_resp
));
776 pwork
= &priv
->alive_start
;
777 iwl3945_disable_events(priv
);
780 /* We delay the ALIVE response by 5ms to
781 * give the HW RF Kill time to activate... */
782 if (palive
->is_valid
== UCODE_VALID_OK
)
783 queue_delayed_work(priv
->workqueue
, pwork
,
784 msecs_to_jiffies(5));
786 IWL_WARN(priv
, "uCode did not respond OK.\n");
789 static void iwl3945_rx_reply_add_sta(struct iwl_priv
*priv
,
790 struct iwl_rx_mem_buffer
*rxb
)
792 #ifdef CONFIG_IWLWIFI_DEBUG
793 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
796 IWL_DEBUG_RX(priv
, "Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
799 static void iwl3945_bg_beacon_update(struct work_struct
*work
)
801 struct iwl_priv
*priv
=
802 container_of(work
, struct iwl_priv
, beacon_update
);
803 struct sk_buff
*beacon
;
805 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
806 beacon
= ieee80211_beacon_get(priv
->hw
,
807 priv
->contexts
[IWL_RXON_CTX_BSS
].vif
);
810 IWL_ERR(priv
, "update beacon failed\n");
814 mutex_lock(&priv
->mutex
);
815 /* new beacon skb is allocated every time; dispose previous.*/
816 if (priv
->beacon_skb
)
817 dev_kfree_skb(priv
->beacon_skb
);
819 priv
->beacon_skb
= beacon
;
820 mutex_unlock(&priv
->mutex
);
822 iwl3945_send_beacon_cmd(priv
);
825 static void iwl3945_rx_beacon_notif(struct iwl_priv
*priv
,
826 struct iwl_rx_mem_buffer
*rxb
)
828 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
829 struct iwl3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
830 #ifdef CONFIG_IWLWIFI_DEBUG
831 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
833 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
834 "tsf %d %d rate %d\n",
835 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
836 beacon
->beacon_notify_hdr
.failure_frame
,
837 le32_to_cpu(beacon
->ibss_mgr_status
),
838 le32_to_cpu(beacon
->high_tsf
),
839 le32_to_cpu(beacon
->low_tsf
), rate
);
842 priv
->ibss_manager
= le32_to_cpu(beacon
->ibss_mgr_status
);
844 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
845 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
846 queue_work(priv
->workqueue
, &priv
->beacon_update
);
849 /* Handle notification from uCode that card's power state is changing
850 * due to software, hardware, or critical temperature RFKILL */
851 static void iwl3945_rx_card_state_notif(struct iwl_priv
*priv
,
852 struct iwl_rx_mem_buffer
*rxb
)
854 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
855 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
856 unsigned long status
= priv
->status
;
858 IWL_WARN(priv
, "Card state received: HW:%s SW:%s\n",
859 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
860 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
862 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
863 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
865 if (flags
& HW_CARD_DISABLED
)
866 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
868 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
871 iwl_scan_cancel(priv
);
873 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
874 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
875 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
876 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
878 wake_up_interruptible(&priv
->wait_command_queue
);
882 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
884 * Setup the RX handlers for each of the reply types sent from the uCode
887 * This function chains into the hardware specific files for them to setup
888 * any hardware specific handlers as well.
890 static void iwl3945_setup_rx_handlers(struct iwl_priv
*priv
)
892 priv
->rx_handlers
[REPLY_ALIVE
] = iwl3945_rx_reply_alive
;
893 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl3945_rx_reply_add_sta
;
894 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
895 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
896 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
897 iwl_rx_spectrum_measure_notif
;
898 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
899 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
900 iwl_rx_pm_debug_statistics_notif
;
901 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl3945_rx_beacon_notif
;
904 * The same handler is used for both the REPLY to a discrete
905 * statistics request from the host as well as for the periodic
906 * statistics notifications (after received beacons) from the uCode.
908 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl3945_reply_statistics
;
909 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl3945_hw_rx_statistics
;
911 iwl_setup_rx_scan_handlers(priv
);
912 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl3945_rx_card_state_notif
;
914 /* Set up hardware specific Rx handlers */
915 iwl3945_hw_rx_handler_setup(priv
);
918 /************************** RX-FUNCTIONS ****************************/
920 * Rx theory of operation
922 * The host allocates 32 DMA target addresses and passes the host address
923 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
927 * The host/firmware share two index registers for managing the Rx buffers.
929 * The READ index maps to the first position that the firmware may be writing
930 * to -- the driver can read up to (but not including) this position and get
932 * The READ index is managed by the firmware once the card is enabled.
934 * The WRITE index maps to the last position the driver has read from -- the
935 * position preceding WRITE is the last slot the firmware can place a packet.
937 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
940 * During initialization, the host sets up the READ queue position to the first
941 * INDEX position, and WRITE to the last (READ - 1 wrapped)
943 * When the firmware places a packet in a buffer, it will advance the READ index
944 * and fire the RX interrupt. The driver can then query the READ index and
945 * process as many packets as possible, moving the WRITE index forward as it
946 * resets the Rx queue buffers with new memory.
948 * The management in the driver is as follows:
949 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
950 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
951 * to replenish the iwl->rxq->rx_free.
952 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
953 * iwl->rxq is replenished and the READ INDEX is updated (updating the
954 * 'processed' and 'read' driver indexes as well)
955 * + A received packet is processed and handed to the kernel network stack,
956 * detached from the iwl->rxq. The driver 'processed' index is updated.
957 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
958 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
959 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
960 * were enough free buffers and RX_STALLED is set it is cleared.
965 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
966 * iwl3945_rx_queue_restock
967 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
968 * queue, updates firmware pointers, and updates
969 * the WRITE index. If insufficient rx_free buffers
970 * are available, schedules iwl3945_rx_replenish
972 * -- enable interrupts --
973 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
974 * READ INDEX, detaching the SKB from the pool.
975 * Moves the packet buffer from queue to rx_used.
976 * Calls iwl3945_rx_queue_restock to refill any empty
983 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
985 static inline __le32
iwl3945_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
988 return cpu_to_le32((u32
)dma_addr
);
992 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
994 * If there are slots in the RX queue that need to be restocked,
995 * and we have free pre-allocated buffers, fill the ranks as much
996 * as we can, pulling from rx_free.
998 * This moves the 'write' index forward to catch up with 'processed', and
999 * also updates the memory address in the firmware to reference the new
1002 static void iwl3945_rx_queue_restock(struct iwl_priv
*priv
)
1004 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1005 struct list_head
*element
;
1006 struct iwl_rx_mem_buffer
*rxb
;
1007 unsigned long flags
;
1010 spin_lock_irqsave(&rxq
->lock
, flags
);
1011 write
= rxq
->write
& ~0x7;
1012 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
1013 /* Get next free Rx buffer, remove from free list */
1014 element
= rxq
->rx_free
.next
;
1015 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1018 /* Point to Rx buffer via next RBD in circular buffer */
1019 rxq
->bd
[rxq
->write
] = iwl3945_dma_addr2rbd_ptr(priv
, rxb
->page_dma
);
1020 rxq
->queue
[rxq
->write
] = rxb
;
1021 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
1024 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1025 /* If the pre-allocated buffer pool is dropping low, schedule to
1027 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
1028 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
1031 /* If we've added more space for the firmware to place data, tell it.
1032 * Increment device's write pointer in multiples of 8. */
1033 if ((rxq
->write_actual
!= (rxq
->write
& ~0x7))
1034 || (abs(rxq
->write
- rxq
->read
) > 7)) {
1035 spin_lock_irqsave(&rxq
->lock
, flags
);
1036 rxq
->need_update
= 1;
1037 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1038 iwl_rx_queue_update_write_ptr(priv
, rxq
);
1043 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1045 * When moving to rx_free an SKB is allocated for the slot.
1047 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1048 * This is called as a scheduled work item (except for during initialization)
1050 static void iwl3945_rx_allocate(struct iwl_priv
*priv
, gfp_t priority
)
1052 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1053 struct list_head
*element
;
1054 struct iwl_rx_mem_buffer
*rxb
;
1056 unsigned long flags
;
1057 gfp_t gfp_mask
= priority
;
1060 spin_lock_irqsave(&rxq
->lock
, flags
);
1062 if (list_empty(&rxq
->rx_used
)) {
1063 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1066 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1068 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1069 gfp_mask
|= __GFP_NOWARN
;
1071 if (priv
->hw_params
.rx_page_order
> 0)
1072 gfp_mask
|= __GFP_COMP
;
1074 /* Alloc a new receive buffer */
1075 page
= alloc_pages(gfp_mask
, priv
->hw_params
.rx_page_order
);
1077 if (net_ratelimit())
1078 IWL_DEBUG_INFO(priv
, "Failed to allocate SKB buffer.\n");
1079 if ((rxq
->free_count
<= RX_LOW_WATERMARK
) &&
1081 IWL_CRIT(priv
, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1082 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1084 /* We don't reschedule replenish work here -- we will
1085 * call the restock method and if it still needs
1086 * more buffers it will schedule replenish */
1090 spin_lock_irqsave(&rxq
->lock
, flags
);
1091 if (list_empty(&rxq
->rx_used
)) {
1092 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1093 __free_pages(page
, priv
->hw_params
.rx_page_order
);
1096 element
= rxq
->rx_used
.next
;
1097 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
1099 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1102 /* Get physical address of RB/SKB */
1103 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, page
, 0,
1104 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1105 PCI_DMA_FROMDEVICE
);
1107 spin_lock_irqsave(&rxq
->lock
, flags
);
1109 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1111 priv
->alloc_rxb_page
++;
1113 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1117 void iwl3945_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1119 unsigned long flags
;
1121 spin_lock_irqsave(&rxq
->lock
, flags
);
1122 INIT_LIST_HEAD(&rxq
->rx_free
);
1123 INIT_LIST_HEAD(&rxq
->rx_used
);
1124 /* Fill the rx_used queue with _all_ of the Rx buffers */
1125 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1126 /* In the reset function, these buffers may have been allocated
1127 * to an SKB, so we need to unmap and free potential storage */
1128 if (rxq
->pool
[i
].page
!= NULL
) {
1129 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1130 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1131 PCI_DMA_FROMDEVICE
);
1132 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1133 rxq
->pool
[i
].page
= NULL
;
1135 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1138 /* Set us so that we have processed and used all buffers, but have
1139 * not restocked the Rx queue with fresh buffers */
1140 rxq
->read
= rxq
->write
= 0;
1141 rxq
->write_actual
= 0;
1142 rxq
->free_count
= 0;
1143 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1146 void iwl3945_rx_replenish(void *data
)
1148 struct iwl_priv
*priv
= data
;
1149 unsigned long flags
;
1151 iwl3945_rx_allocate(priv
, GFP_KERNEL
);
1153 spin_lock_irqsave(&priv
->lock
, flags
);
1154 iwl3945_rx_queue_restock(priv
);
1155 spin_unlock_irqrestore(&priv
->lock
, flags
);
1158 static void iwl3945_rx_replenish_now(struct iwl_priv
*priv
)
1160 iwl3945_rx_allocate(priv
, GFP_ATOMIC
);
1162 iwl3945_rx_queue_restock(priv
);
1166 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1167 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1168 * This free routine walks the list of POOL entries and if SKB is set to
1169 * non NULL it is unmapped and freed
1171 static void iwl3945_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
1174 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1175 if (rxq
->pool
[i
].page
!= NULL
) {
1176 pci_unmap_page(priv
->pci_dev
, rxq
->pool
[i
].page_dma
,
1177 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1178 PCI_DMA_FROMDEVICE
);
1179 __iwl_free_pages(priv
, rxq
->pool
[i
].page
);
1180 rxq
->pool
[i
].page
= NULL
;
1184 dma_free_coherent(&priv
->pci_dev
->dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1186 dma_free_coherent(&priv
->pci_dev
->dev
, sizeof(struct iwl_rb_status
),
1187 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1189 rxq
->rb_stts
= NULL
;
1193 /* Convert linear signal-to-noise ratio into dB */
1194 static u8 ratio2dB
[100] = {
1195 /* 0 1 2 3 4 5 6 7 8 9 */
1196 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1197 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1198 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1199 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1200 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1201 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1202 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1203 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1204 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1205 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1208 /* Calculates a relative dB value from a ratio of linear
1209 * (i.e. not dB) signal levels.
1210 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1211 int iwl3945_calc_db_from_ratio(int sig_ratio
)
1213 /* 1000:1 or higher just report as 60 dB */
1214 if (sig_ratio
>= 1000)
1217 /* 100:1 or higher, divide by 10 and use table,
1218 * add 20 dB to make up for divide by 10 */
1219 if (sig_ratio
>= 100)
1220 return 20 + (int)ratio2dB
[sig_ratio
/10];
1222 /* We shouldn't see this */
1226 /* Use table for ratios 1:1 - 99:1 */
1227 return (int)ratio2dB
[sig_ratio
];
1231 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1233 * Uses the priv->rx_handlers callback function array to invoke
1234 * the appropriate handlers, including command responses,
1235 * frame-received notifications, and other notifications.
1237 static void iwl3945_rx_handle(struct iwl_priv
*priv
)
1239 struct iwl_rx_mem_buffer
*rxb
;
1240 struct iwl_rx_packet
*pkt
;
1241 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1244 unsigned long flags
;
1247 int total_empty
= 0;
1249 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1250 * buffer that the driver may process (last buffer filled by ucode). */
1251 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1254 /* calculate total frames need to be restock after handling RX */
1255 total_empty
= r
- rxq
->write_actual
;
1256 if (total_empty
< 0)
1257 total_empty
+= RX_QUEUE_SIZE
;
1259 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1261 /* Rx interrupt, but nothing sent from uCode */
1263 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
1268 rxb
= rxq
->queue
[i
];
1270 /* If an RXB doesn't have a Rx queue slot associated with it,
1271 * then a bug has been introduced in the queue refilling
1272 * routines -- catch it here */
1273 BUG_ON(rxb
== NULL
);
1275 rxq
->queue
[i
] = NULL
;
1277 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
1278 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1279 PCI_DMA_FROMDEVICE
);
1280 pkt
= rxb_addr(rxb
);
1282 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
1283 len
+= sizeof(u32
); /* account for status word */
1284 trace_iwlwifi_dev_rx(priv
, pkt
, len
);
1286 /* Reclaim a command buffer only if this packet is a response
1287 * to a (driver-originated) command.
1288 * If the packet (e.g. Rx frame) originated from uCode,
1289 * there is no command buffer to reclaim.
1290 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1291 * but apparently a few don't get set; catch them here. */
1292 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1293 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1294 (pkt
->hdr
.cmd
!= REPLY_TX
);
1296 /* Based on type of command response or notification,
1297 * handle those that need handling via function in
1298 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1299 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1300 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1301 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1302 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1303 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1305 /* No handling needed */
1307 "r %d i %d No handler needed for %s, 0x%02x\n",
1308 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1313 * XXX: After here, we should always check rxb->page
1314 * against NULL before touching it or its virtual
1315 * memory (pkt). Because some rx_handler might have
1316 * already taken or freed the pages.
1320 /* Invoke any callbacks, transfer the buffer to caller,
1321 * and fire off the (possibly) blocking iwl_send_cmd()
1322 * as we reclaim the driver command queue */
1324 iwl_tx_cmd_complete(priv
, rxb
);
1326 IWL_WARN(priv
, "Claim null rxb?\n");
1329 /* Reuse the page if possible. For notification packets and
1330 * SKBs that fail to Rx correctly, add them back into the
1331 * rx_free list for reuse later. */
1332 spin_lock_irqsave(&rxq
->lock
, flags
);
1333 if (rxb
->page
!= NULL
) {
1334 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1335 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1336 PCI_DMA_FROMDEVICE
);
1337 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1340 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1342 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1344 i
= (i
+ 1) & RX_QUEUE_MASK
;
1345 /* If there are a lot of unused frames,
1346 * restock the Rx queue so ucode won't assert. */
1351 iwl3945_rx_replenish_now(priv
);
1357 /* Backtrack one entry */
1360 iwl3945_rx_replenish_now(priv
);
1362 iwl3945_rx_queue_restock(priv
);
1365 /* call this function to flush any scheduled tasklet */
1366 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1368 /* wait to make sure we flush pending tasklet*/
1369 synchronize_irq(priv
->pci_dev
->irq
);
1370 tasklet_kill(&priv
->irq_tasklet
);
1373 static const char *desc_lookup(int i
)
1381 return "BAD_CHECKSUM";
1383 return "NMI_INTERRUPT";
1387 return "FATAL_ERROR";
1393 #define ERROR_START_OFFSET (1 * sizeof(u32))
1394 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1396 void iwl3945_dump_nic_error_log(struct iwl_priv
*priv
)
1399 u32 desc
, time
, count
, base
, data1
;
1400 u32 blink1
, blink2
, ilink1
, ilink2
;
1402 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
1404 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1405 IWL_ERR(priv
, "Not valid error log pointer 0x%08X\n", base
);
1410 count
= iwl_read_targ_mem(priv
, base
);
1412 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1413 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
1414 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
1415 priv
->status
, count
);
1418 IWL_ERR(priv
, "Desc Time asrtPC blink2 "
1419 "ilink1 nmiPC Line\n");
1420 for (i
= ERROR_START_OFFSET
;
1421 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1422 i
+= ERROR_ELEM_SIZE
) {
1423 desc
= iwl_read_targ_mem(priv
, base
+ i
);
1425 iwl_read_targ_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
1427 iwl_read_targ_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
1429 iwl_read_targ_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
1431 iwl_read_targ_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
1433 iwl_read_targ_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
1435 iwl_read_targ_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
1438 "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1439 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1440 ilink1
, ilink2
, data1
);
1441 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, 0,
1442 0, blink1
, blink2
, ilink1
, ilink2
);
1446 #define EVENT_START_OFFSET (6 * sizeof(u32))
1449 * iwl3945_print_event_log - Dump error event log to syslog
1452 static int iwl3945_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
1453 u32 num_events
, u32 mode
,
1454 int pos
, char **buf
, size_t bufsz
)
1457 u32 base
; /* SRAM byte address of event log header */
1458 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
1459 u32 ptr
; /* SRAM byte address of log data */
1460 u32 ev
, time
, data
; /* event log data */
1461 unsigned long reg_flags
;
1463 if (num_events
== 0)
1466 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1469 event_size
= 2 * sizeof(u32
);
1471 event_size
= 3 * sizeof(u32
);
1473 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
1475 /* Make sure device is powered up for SRAM reads */
1476 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
1477 iwl_grab_nic_access(priv
);
1479 /* Set starting address; reads will auto-increment */
1480 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
1483 /* "time" is actually "data" for mode 0 (no timestamp).
1484 * place event id # at far right for easier visual parsing. */
1485 for (i
= 0; i
< num_events
; i
++) {
1486 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1487 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1491 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1495 IWL_ERR(priv
, "0x%08x\t%04u\n", time
, ev
);
1496 trace_iwlwifi_dev_ucode_event(priv
, 0,
1500 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1502 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
1503 "%010u:0x%08x:%04u\n",
1506 IWL_ERR(priv
, "%010u\t0x%08x\t%04u\n",
1508 trace_iwlwifi_dev_ucode_event(priv
, time
,
1514 /* Allow device to power down */
1515 iwl_release_nic_access(priv
);
1516 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
1521 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1523 static int iwl3945_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
1524 u32 num_wraps
, u32 next_entry
,
1526 int pos
, char **buf
, size_t bufsz
)
1529 * display the newest DEFAULT_LOG_ENTRIES entries
1530 * i.e the entries just before the next ont that uCode would fill.
1533 if (next_entry
< size
) {
1534 pos
= iwl3945_print_event_log(priv
,
1535 capacity
- (size
- next_entry
),
1536 size
- next_entry
, mode
,
1538 pos
= iwl3945_print_event_log(priv
, 0,
1542 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1546 if (next_entry
< size
)
1547 pos
= iwl3945_print_event_log(priv
, 0,
1551 pos
= iwl3945_print_event_log(priv
, next_entry
- size
,
1558 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1560 int iwl3945_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
1561 char **buf
, bool display
)
1563 u32 base
; /* SRAM byte address of event log header */
1564 u32 capacity
; /* event log capacity in # entries */
1565 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
1566 u32 num_wraps
; /* # times uCode wrapped to top of log */
1567 u32 next_entry
; /* index of next entry to be written by uCode */
1568 u32 size
; /* # entries that we'll print */
1572 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
1573 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
1574 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
1578 /* event log header */
1579 capacity
= iwl_read_targ_mem(priv
, base
);
1580 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
1581 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
1582 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
1584 if (capacity
> priv
->cfg
->base_params
->max_event_log_size
) {
1585 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
1586 capacity
, priv
->cfg
->base_params
->max_event_log_size
);
1587 capacity
= priv
->cfg
->base_params
->max_event_log_size
;
1590 if (next_entry
> priv
->cfg
->base_params
->max_event_log_size
) {
1591 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
1592 next_entry
, priv
->cfg
->base_params
->max_event_log_size
);
1593 next_entry
= priv
->cfg
->base_params
->max_event_log_size
;
1596 size
= num_wraps
? capacity
: next_entry
;
1598 /* bail out if nothing in log */
1600 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
1604 #ifdef CONFIG_IWLWIFI_DEBUG
1605 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
1606 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1607 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1609 size
= (size
> DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
)
1610 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES
: size
;
1613 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %d count\n",
1616 #ifdef CONFIG_IWLWIFI_DEBUG
1619 bufsz
= capacity
* 48;
1622 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
1626 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
1627 /* if uCode has wrapped back to top of log,
1628 * start at the oldest entry,
1629 * i.e the next one that uCode would fill.
1632 pos
= iwl3945_print_event_log(priv
, next_entry
,
1633 capacity
- next_entry
, mode
,
1636 /* (then/else) start at top of log */
1637 pos
= iwl3945_print_event_log(priv
, 0, next_entry
, mode
,
1640 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1641 next_entry
, size
, mode
,
1644 pos
= iwl3945_print_last_event_logs(priv
, capacity
, num_wraps
,
1645 next_entry
, size
, mode
,
1651 static void iwl3945_irq_tasklet(struct iwl_priv
*priv
)
1653 u32 inta
, handled
= 0;
1655 unsigned long flags
;
1656 #ifdef CONFIG_IWLWIFI_DEBUG
1660 spin_lock_irqsave(&priv
->lock
, flags
);
1662 /* Ack/clear/reset pending uCode interrupts.
1663 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1664 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1665 inta
= iwl_read32(priv
, CSR_INT
);
1666 iwl_write32(priv
, CSR_INT
, inta
);
1668 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1669 * Any new interrupts that happen after this, either while we're
1670 * in this tasklet, or later, will show up in next ISR/tasklet. */
1671 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1672 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1674 #ifdef CONFIG_IWLWIFI_DEBUG
1675 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1676 /* just for debug */
1677 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1678 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1679 inta
, inta_mask
, inta_fh
);
1683 spin_unlock_irqrestore(&priv
->lock
, flags
);
1685 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1686 * atomic, make sure that inta covers all the interrupts that
1687 * we've discovered, even if FH interrupt came in just after
1688 * reading CSR_INT. */
1689 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1690 inta
|= CSR_INT_BIT_FH_RX
;
1691 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1692 inta
|= CSR_INT_BIT_FH_TX
;
1694 /* Now service all interrupt bits discovered above. */
1695 if (inta
& CSR_INT_BIT_HW_ERR
) {
1696 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1698 /* Tell the device to stop sending interrupts */
1699 iwl_disable_interrupts(priv
);
1701 priv
->isr_stats
.hw
++;
1702 iwl_irq_handle_error(priv
);
1704 handled
|= CSR_INT_BIT_HW_ERR
;
1709 #ifdef CONFIG_IWLWIFI_DEBUG
1710 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1711 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1712 if (inta
& CSR_INT_BIT_SCD
) {
1713 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1714 "the frame/frames.\n");
1715 priv
->isr_stats
.sch
++;
1718 /* Alive notification via Rx interrupt will do the real work */
1719 if (inta
& CSR_INT_BIT_ALIVE
) {
1720 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1721 priv
->isr_stats
.alive
++;
1725 /* Safely ignore these bits for debug checks below */
1726 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1728 /* Error detected by uCode */
1729 if (inta
& CSR_INT_BIT_SW_ERR
) {
1730 IWL_ERR(priv
, "Microcode SW error detected. "
1731 "Restarting 0x%X.\n", inta
);
1732 priv
->isr_stats
.sw
++;
1733 iwl_irq_handle_error(priv
);
1734 handled
|= CSR_INT_BIT_SW_ERR
;
1737 /* uCode wakes up after power-down sleep */
1738 if (inta
& CSR_INT_BIT_WAKEUP
) {
1739 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1740 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1741 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1742 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1743 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1744 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1745 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1746 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1748 priv
->isr_stats
.wakeup
++;
1749 handled
|= CSR_INT_BIT_WAKEUP
;
1752 /* All uCode command responses, including Tx command responses,
1753 * Rx "responses" (frame-received notification), and other
1754 * notifications from uCode come through here*/
1755 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1756 iwl3945_rx_handle(priv
);
1757 priv
->isr_stats
.rx
++;
1758 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1761 if (inta
& CSR_INT_BIT_FH_TX
) {
1762 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1763 priv
->isr_stats
.tx
++;
1765 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
1766 iwl_write_direct32(priv
, FH39_TCSR_CREDIT
1767 (FH39_SRVC_CHNL
), 0x0);
1768 handled
|= CSR_INT_BIT_FH_TX
;
1771 if (inta
& ~handled
) {
1772 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1773 priv
->isr_stats
.unhandled
++;
1776 if (inta
& ~priv
->inta_mask
) {
1777 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1778 inta
& ~priv
->inta_mask
);
1779 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1782 /* Re-enable all interrupts */
1783 /* only Re-enable if disabled by irq */
1784 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1785 iwl_enable_interrupts(priv
);
1787 #ifdef CONFIG_IWLWIFI_DEBUG
1788 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1789 inta
= iwl_read32(priv
, CSR_INT
);
1790 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1791 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1792 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1793 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1798 static int iwl3945_get_single_channel_for_scan(struct iwl_priv
*priv
,
1799 struct ieee80211_vif
*vif
,
1800 enum ieee80211_band band
,
1801 struct iwl3945_scan_channel
*scan_ch
)
1803 const struct ieee80211_supported_band
*sband
;
1804 u16 passive_dwell
= 0;
1805 u16 active_dwell
= 0;
1809 sband
= iwl_get_hw_mode(priv
, band
);
1811 IWL_ERR(priv
, "invalid band\n");
1815 active_dwell
= iwl_get_active_dwell_time(priv
, band
, 0);
1816 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
, vif
);
1818 if (passive_dwell
<= active_dwell
)
1819 passive_dwell
= active_dwell
+ 1;
1822 channel
= iwl_get_single_channel_number(priv
, band
);
1825 scan_ch
->channel
= channel
;
1826 scan_ch
->type
= 0; /* passive */
1827 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1828 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1829 /* Set txpower levels to defaults */
1830 scan_ch
->tpc
.dsp_atten
= 110;
1831 if (band
== IEEE80211_BAND_5GHZ
)
1832 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1834 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1837 IWL_ERR(priv
, "no valid channel found\n");
1841 static int iwl3945_get_channels_for_scan(struct iwl_priv
*priv
,
1842 enum ieee80211_band band
,
1843 u8 is_active
, u8 n_probes
,
1844 struct iwl3945_scan_channel
*scan_ch
,
1845 struct ieee80211_vif
*vif
)
1847 struct ieee80211_channel
*chan
;
1848 const struct ieee80211_supported_band
*sband
;
1849 const struct iwl_channel_info
*ch_info
;
1850 u16 passive_dwell
= 0;
1851 u16 active_dwell
= 0;
1854 sband
= iwl_get_hw_mode(priv
, band
);
1858 active_dwell
= iwl_get_active_dwell_time(priv
, band
, n_probes
);
1859 passive_dwell
= iwl_get_passive_dwell_time(priv
, band
, vif
);
1861 if (passive_dwell
<= active_dwell
)
1862 passive_dwell
= active_dwell
+ 1;
1864 for (i
= 0, added
= 0; i
< priv
->scan_request
->n_channels
; i
++) {
1865 chan
= priv
->scan_request
->channels
[i
];
1867 if (chan
->band
!= band
)
1870 scan_ch
->channel
= chan
->hw_value
;
1872 ch_info
= iwl_get_channel_info(priv
, band
, scan_ch
->channel
);
1873 if (!is_channel_valid(ch_info
)) {
1874 IWL_DEBUG_SCAN(priv
, "Channel %d is INVALID for this band.\n",
1879 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1880 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1881 /* If passive , set up for auto-switch
1882 * and use long active_dwell time.
1884 if (!is_active
|| is_channel_passive(ch_info
) ||
1885 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1886 scan_ch
->type
= 0; /* passive */
1887 if (IWL_UCODE_API(priv
->ucode_ver
) == 1)
1888 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1890 scan_ch
->type
= 1; /* active */
1893 /* Set direct probe bits. These may be used both for active
1894 * scan channels (probes gets sent right away),
1895 * or for passive channels (probes get se sent only after
1896 * hearing clear Rx packet).*/
1897 if (IWL_UCODE_API(priv
->ucode_ver
) >= 2) {
1899 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1901 /* uCode v1 does not allow setting direct probe bits on
1902 * passive channel. */
1903 if ((scan_ch
->type
& 1) && n_probes
)
1904 scan_ch
->type
|= IWL39_SCAN_PROBE_MASK(n_probes
);
1907 /* Set txpower levels to defaults */
1908 scan_ch
->tpc
.dsp_atten
= 110;
1909 /* scan_pwr_info->tpc.dsp_atten; */
1911 /*scan_pwr_info->tpc.tx_gain; */
1912 if (band
== IEEE80211_BAND_5GHZ
)
1913 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1915 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1916 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1918 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1922 IWL_DEBUG_SCAN(priv
, "Scanning %d [%s %d]\n",
1924 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1925 (scan_ch
->type
& 1) ?
1926 active_dwell
: passive_dwell
);
1932 IWL_DEBUG_SCAN(priv
, "total channels to scan %d\n", added
);
1936 static void iwl3945_init_hw_rates(struct iwl_priv
*priv
,
1937 struct ieee80211_rate
*rates
)
1941 for (i
= 0; i
< IWL_RATE_COUNT_LEGACY
; i
++) {
1942 rates
[i
].bitrate
= iwl3945_rates
[i
].ieee
* 5;
1943 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
1944 rates
[i
].hw_value_short
= i
;
1946 if ((i
> IWL39_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
1948 * If CCK != 1M then set short preamble rate flag.
1950 rates
[i
].flags
|= (iwl3945_rates
[i
].plcp
== 10) ?
1951 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1956 /******************************************************************************
1958 * uCode download functions
1960 ******************************************************************************/
1962 static void iwl3945_dealloc_ucode_pci(struct iwl_priv
*priv
)
1964 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1965 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1966 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1967 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1968 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1969 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1973 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1974 * looking at all data.
1976 static int iwl3945_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
1983 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
1985 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
1986 IWL39_RTC_INST_LOWER_BOUND
);
1989 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1990 /* read data comes through single port, auto-incr addr */
1991 /* NOTE: Use the debugless read so we don't flood kernel log
1992 * if IWL_DL_IO is set */
1993 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
1994 if (val
!= le32_to_cpu(*image
)) {
1995 IWL_ERR(priv
, "uCode INST section is invalid at "
1996 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1997 save_len
- len
, val
, le32_to_cpu(*image
));
2007 IWL_DEBUG_INFO(priv
,
2008 "ucode image in INSTRUCTION memory is good\n");
2015 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2016 * using sample data 100 bytes apart. If these sample points are good,
2017 * it's a pretty good bet that everything between them is good, too.
2019 static int iwl3945_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
2026 IWL_DEBUG_INFO(priv
, "ucode inst image size is %u\n", len
);
2028 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
2029 /* read data comes through single port, auto-incr addr */
2030 /* NOTE: Use the debugless read so we don't flood kernel log
2031 * if IWL_DL_IO is set */
2032 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
2033 i
+ IWL39_RTC_INST_LOWER_BOUND
);
2034 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2035 if (val
!= le32_to_cpu(*image
)) {
2036 #if 0 /* Enable this if you want to see details */
2037 IWL_ERR(priv
, "uCode INST section is invalid at "
2038 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2053 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2054 * and verify its contents
2056 static int iwl3945_verify_ucode(struct iwl_priv
*priv
)
2063 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2064 len
= priv
->ucode_boot
.len
;
2065 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2067 IWL_DEBUG_INFO(priv
, "Bootstrap uCode is good in inst SRAM\n");
2071 /* Try initialize */
2072 image
= (__le32
*)priv
->ucode_init
.v_addr
;
2073 len
= priv
->ucode_init
.len
;
2074 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2076 IWL_DEBUG_INFO(priv
, "Initialize uCode is good in inst SRAM\n");
2080 /* Try runtime/protocol */
2081 image
= (__le32
*)priv
->ucode_code
.v_addr
;
2082 len
= priv
->ucode_code
.len
;
2083 rc
= iwl3945_verify_inst_sparse(priv
, image
, len
);
2085 IWL_DEBUG_INFO(priv
, "Runtime uCode is good in inst SRAM\n");
2089 IWL_ERR(priv
, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2091 /* Since nothing seems to match, show first several data entries in
2092 * instruction SRAM, so maybe visual inspection will give a clue.
2093 * Selection of bootstrap image (vs. other images) is arbitrary. */
2094 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
2095 len
= priv
->ucode_boot
.len
;
2096 rc
= iwl3945_verify_inst_full(priv
, image
, len
);
2101 static void iwl3945_nic_start(struct iwl_priv
*priv
)
2103 /* Remove all resets to allow NIC to operate */
2104 iwl_write32(priv
, CSR_RESET
, 0);
2107 #define IWL3945_UCODE_GET(item) \
2108 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2110 return le32_to_cpu(ucode->u.v1.item); \
2113 static u32
iwl3945_ucode_get_header_size(u32 api_ver
)
2118 static u8
*iwl3945_ucode_get_data(const struct iwl_ucode_header
*ucode
)
2120 return (u8
*) ucode
->u
.v1
.data
;
2123 IWL3945_UCODE_GET(inst_size
);
2124 IWL3945_UCODE_GET(data_size
);
2125 IWL3945_UCODE_GET(init_size
);
2126 IWL3945_UCODE_GET(init_data_size
);
2127 IWL3945_UCODE_GET(boot_size
);
2130 * iwl3945_read_ucode - Read uCode images from disk file.
2132 * Copy into buffers for card to fetch via bus-mastering
2134 static int iwl3945_read_ucode(struct iwl_priv
*priv
)
2136 const struct iwl_ucode_header
*ucode
;
2137 int ret
= -EINVAL
, index
;
2138 const struct firmware
*ucode_raw
;
2139 /* firmware file name contains uCode/driver compatibility version */
2140 const char *name_pre
= priv
->cfg
->fw_name_pre
;
2141 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
2142 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
2146 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
2148 /* Ask kernel firmware_class module to get the boot firmware off disk.
2149 * request_firmware() is synchronous, file is in memory on return. */
2150 for (index
= api_max
; index
>= api_min
; index
--) {
2151 sprintf(buf
, "%s%u%s", name_pre
, index
, ".ucode");
2152 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
2154 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
2161 if (index
< api_max
)
2162 IWL_ERR(priv
, "Loaded firmware %s, "
2163 "which is deprecated. "
2164 " Please use API v%u instead.\n",
2166 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file "
2167 "(%zd bytes) from disk\n",
2168 buf
, ucode_raw
->size
);
2176 /* Make sure that we got at least our header! */
2177 if (ucode_raw
->size
< iwl3945_ucode_get_header_size(1)) {
2178 IWL_ERR(priv
, "File size way too small!\n");
2183 /* Data from ucode file: header followed by uCode images */
2184 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
2186 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
2187 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
2188 inst_size
= iwl3945_ucode_get_inst_size(ucode
);
2189 data_size
= iwl3945_ucode_get_data_size(ucode
);
2190 init_size
= iwl3945_ucode_get_init_size(ucode
);
2191 init_data_size
= iwl3945_ucode_get_init_data_size(ucode
);
2192 boot_size
= iwl3945_ucode_get_boot_size(ucode
);
2193 src
= iwl3945_ucode_get_data(ucode
);
2195 /* api_ver should match the api version forming part of the
2196 * firmware filename ... but we don't check for that and only rely
2197 * on the API version read from firmware header from here on forward */
2199 if (api_ver
< api_min
|| api_ver
> api_max
) {
2200 IWL_ERR(priv
, "Driver unable to support your firmware API. "
2201 "Driver supports v%u, firmware is v%u.\n",
2203 priv
->ucode_ver
= 0;
2207 if (api_ver
!= api_max
)
2208 IWL_ERR(priv
, "Firmware has old API version. Expected %u, "
2209 "got %u. New firmware can be obtained "
2210 "from http://www.intellinuxwireless.org.\n",
2213 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
2214 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2215 IWL_UCODE_MINOR(priv
->ucode_ver
),
2216 IWL_UCODE_API(priv
->ucode_ver
),
2217 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2219 snprintf(priv
->hw
->wiphy
->fw_version
,
2220 sizeof(priv
->hw
->wiphy
->fw_version
),
2222 IWL_UCODE_MAJOR(priv
->ucode_ver
),
2223 IWL_UCODE_MINOR(priv
->ucode_ver
),
2224 IWL_UCODE_API(priv
->ucode_ver
),
2225 IWL_UCODE_SERIAL(priv
->ucode_ver
));
2227 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
2229 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
2231 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
2233 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
2235 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
2237 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
2241 /* Verify size of file vs. image size info in file's header */
2242 if (ucode_raw
->size
!= iwl3945_ucode_get_header_size(api_ver
) +
2243 inst_size
+ data_size
+ init_size
+
2244 init_data_size
+ boot_size
) {
2246 IWL_DEBUG_INFO(priv
,
2247 "uCode file size %zd does not match expected size\n",
2253 /* Verify that uCode images will fit in card's SRAM */
2254 if (inst_size
> IWL39_MAX_INST_SIZE
) {
2255 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
2261 if (data_size
> IWL39_MAX_DATA_SIZE
) {
2262 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
2267 if (init_size
> IWL39_MAX_INST_SIZE
) {
2268 IWL_DEBUG_INFO(priv
,
2269 "uCode init instr len %d too large to fit in\n",
2274 if (init_data_size
> IWL39_MAX_DATA_SIZE
) {
2275 IWL_DEBUG_INFO(priv
,
2276 "uCode init data len %d too large to fit in\n",
2281 if (boot_size
> IWL39_MAX_BSM_SIZE
) {
2282 IWL_DEBUG_INFO(priv
,
2283 "uCode boot instr len %d too large to fit in\n",
2289 /* Allocate ucode buffers for card's bus-master loading ... */
2291 /* Runtime instructions and 2 copies of data:
2292 * 1) unmodified from disk
2293 * 2) backup cache for save/restore during power-downs */
2294 priv
->ucode_code
.len
= inst_size
;
2295 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
2297 priv
->ucode_data
.len
= data_size
;
2298 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
2300 priv
->ucode_data_backup
.len
= data_size
;
2301 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
2303 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
2304 !priv
->ucode_data_backup
.v_addr
)
2307 /* Initialization instructions and data */
2308 if (init_size
&& init_data_size
) {
2309 priv
->ucode_init
.len
= init_size
;
2310 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
2312 priv
->ucode_init_data
.len
= init_data_size
;
2313 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
2315 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
2319 /* Bootstrap (instructions only, no data) */
2321 priv
->ucode_boot
.len
= boot_size
;
2322 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
2324 if (!priv
->ucode_boot
.v_addr
)
2328 /* Copy images into buffers for card's bus-master reads ... */
2330 /* Runtime instructions (first block of data in file) */
2332 IWL_DEBUG_INFO(priv
,
2333 "Copying (but not loading) uCode instr len %zd\n", len
);
2334 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
2337 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2338 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
2340 /* Runtime data (2nd block)
2341 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2343 IWL_DEBUG_INFO(priv
,
2344 "Copying (but not loading) uCode data len %zd\n", len
);
2345 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
2346 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
2349 /* Initialization instructions (3rd block) */
2352 IWL_DEBUG_INFO(priv
,
2353 "Copying (but not loading) init instr len %zd\n", len
);
2354 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
2358 /* Initialization data (4th block) */
2359 if (init_data_size
) {
2360 len
= init_data_size
;
2361 IWL_DEBUG_INFO(priv
,
2362 "Copying (but not loading) init data len %zd\n", len
);
2363 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
2367 /* Bootstrap instructions (5th block) */
2369 IWL_DEBUG_INFO(priv
,
2370 "Copying (but not loading) boot instr len %zd\n", len
);
2371 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
2373 /* We have our copies now, allow OS release its copies */
2374 release_firmware(ucode_raw
);
2378 IWL_ERR(priv
, "failed to allocate pci memory\n");
2380 iwl3945_dealloc_ucode_pci(priv
);
2383 release_firmware(ucode_raw
);
2391 * iwl3945_set_ucode_ptrs - Set uCode address location
2393 * Tell initialization uCode where to find runtime uCode.
2395 * BSM registers initially contain pointers to initialization uCode.
2396 * We need to replace them to load runtime uCode inst and data,
2397 * and to save runtime data when powering down.
2399 static int iwl3945_set_ucode_ptrs(struct iwl_priv
*priv
)
2404 /* bits 31:0 for 3945 */
2405 pinst
= priv
->ucode_code
.p_addr
;
2406 pdata
= priv
->ucode_data_backup
.p_addr
;
2408 /* Tell bootstrap uCode where to find image to load */
2409 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2410 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2411 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2412 priv
->ucode_data
.len
);
2414 /* Inst byte count must be last to set up, bit 31 signals uCode
2415 * that all new ptr/size info is in place */
2416 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
2417 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2419 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
2425 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2427 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2429 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2431 static void iwl3945_init_alive_start(struct iwl_priv
*priv
)
2433 /* Check alive response for "valid" sign from uCode */
2434 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2435 /* We had an error bringing up the hardware, so take it
2436 * all the way back down so we can try again */
2437 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
2441 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2442 * This is a paranoid check, because we would not have gotten the
2443 * "initialize" alive if code weren't properly loaded. */
2444 if (iwl3945_verify_ucode(priv
)) {
2445 /* Runtime instruction load was bad;
2446 * take it all the way back down so we can try again */
2447 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
2451 /* Send pointers to protocol/runtime uCode image ... init code will
2452 * load and launch runtime uCode, which will send us another "Alive"
2454 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
2455 if (iwl3945_set_ucode_ptrs(priv
)) {
2456 /* Runtime instruction load won't happen;
2457 * take it all the way back down so we can try again */
2458 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
2464 queue_work(priv
->workqueue
, &priv
->restart
);
2468 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2469 * from protocol/runtime uCode (initialization uCode's
2470 * Alive gets handled by iwl3945_init_alive_start()).
2472 static void iwl3945_alive_start(struct iwl_priv
*priv
)
2474 int thermal_spin
= 0;
2476 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
2478 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2480 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2481 /* We had an error bringing up the hardware, so take it
2482 * all the way back down so we can try again */
2483 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2487 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2488 * This is a paranoid check, because we would not have gotten the
2489 * "runtime" alive if code weren't properly loaded. */
2490 if (iwl3945_verify_ucode(priv
)) {
2491 /* Runtime instruction load was bad;
2492 * take it all the way back down so we can try again */
2493 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2497 rfkill
= iwl_read_prph(priv
, APMG_RFKILL_REG
);
2498 IWL_DEBUG_INFO(priv
, "RFKILL status: 0x%x\n", rfkill
);
2501 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2502 /* if RFKILL is not on, then wait for thermal
2503 * sensor in adapter to kick in */
2504 while (iwl3945_hw_get_temperature(priv
) == 0) {
2510 IWL_DEBUG_INFO(priv
, "Thermal calibration took %dus\n",
2513 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2515 /* After the ALIVE response, we can send commands to 3945 uCode */
2516 set_bit(STATUS_ALIVE
, &priv
->status
);
2518 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
2519 /* Enable timer to monitor the driver queues */
2520 mod_timer(&priv
->monitor_recover
,
2523 priv
->cfg
->base_params
->monitor_recover_period
));
2526 if (iwl_is_rfkill(priv
))
2529 ieee80211_wake_queues(priv
->hw
);
2531 priv
->active_rate
= IWL_RATES_MASK
;
2533 iwl_power_update_mode(priv
, true);
2535 if (iwl_is_associated(priv
, IWL_RXON_CTX_BSS
)) {
2536 struct iwl3945_rxon_cmd
*active_rxon
=
2537 (struct iwl3945_rxon_cmd
*)(&ctx
->active
);
2539 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2540 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2542 /* Initialize our rx_config data */
2543 iwl_connection_init_rx_config(priv
, ctx
);
2546 /* Configure Bluetooth device coexistence support */
2547 priv
->cfg
->ops
->hcmd
->send_bt_config(priv
);
2549 /* Configure the adapter for unassociated operation */
2550 iwl3945_commit_rxon(priv
, ctx
);
2552 iwl3945_reg_txpower_periodic(priv
);
2554 iwl_leds_init(priv
);
2556 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2557 set_bit(STATUS_READY
, &priv
->status
);
2558 wake_up_interruptible(&priv
->wait_command_queue
);
2563 queue_work(priv
->workqueue
, &priv
->restart
);
2566 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
);
2568 static void __iwl3945_down(struct iwl_priv
*priv
)
2570 unsigned long flags
;
2573 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2575 iwl_scan_cancel_timeout(priv
, 200);
2577 exit_pending
= test_and_set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2579 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2580 * to prevent rearm timer */
2581 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
)
2582 del_timer_sync(&priv
->monitor_recover
);
2584 /* Station information will now be cleared in device */
2585 iwl_clear_ucode_stations(priv
, NULL
);
2586 iwl_dealloc_bcast_stations(priv
);
2587 iwl_clear_driver_stations(priv
);
2589 /* Unblock any waiting calls */
2590 wake_up_interruptible_all(&priv
->wait_command_queue
);
2592 /* Wipe out the EXIT_PENDING status bit if we are not actually
2593 * exiting the module */
2595 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2597 /* stop and reset the on-board processor */
2598 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2600 /* tell the device to stop sending interrupts */
2601 spin_lock_irqsave(&priv
->lock
, flags
);
2602 iwl_disable_interrupts(priv
);
2603 spin_unlock_irqrestore(&priv
->lock
, flags
);
2604 iwl_synchronize_irq(priv
);
2606 if (priv
->mac80211_registered
)
2607 ieee80211_stop_queues(priv
->hw
);
2609 /* If we have not previously called iwl3945_init() then
2610 * clear all bits but the RF Kill bits and return */
2611 if (!iwl_is_init(priv
)) {
2612 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2614 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2615 STATUS_GEO_CONFIGURED
|
2616 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2617 STATUS_EXIT_PENDING
;
2621 /* ...otherwise clear out all the status bits but the RF Kill
2622 * bit and continue taking the NIC down. */
2623 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2625 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2626 STATUS_GEO_CONFIGURED
|
2627 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2629 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2630 STATUS_EXIT_PENDING
;
2632 iwl3945_hw_txq_ctx_stop(priv
);
2633 iwl3945_hw_rxq_stop(priv
);
2635 /* Power-down device's busmaster DMA clocks */
2636 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2639 /* Stop the device, and put it in low power state */
2643 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2645 if (priv
->beacon_skb
)
2646 dev_kfree_skb(priv
->beacon_skb
);
2647 priv
->beacon_skb
= NULL
;
2649 /* clear out any free frames */
2650 iwl3945_clear_free_frames(priv
);
2653 static void iwl3945_down(struct iwl_priv
*priv
)
2655 mutex_lock(&priv
->mutex
);
2656 __iwl3945_down(priv
);
2657 mutex_unlock(&priv
->mutex
);
2659 iwl3945_cancel_deferred_work(priv
);
2662 #define MAX_HW_RESTARTS 5
2664 static int iwl3945_alloc_bcast_station(struct iwl_priv
*priv
)
2666 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
2667 unsigned long flags
;
2670 spin_lock_irqsave(&priv
->sta_lock
, flags
);
2671 sta_id
= iwl_prep_station(priv
, ctx
, iwl_bcast_addr
, false, NULL
);
2672 if (sta_id
== IWL_INVALID_STATION
) {
2673 IWL_ERR(priv
, "Unable to prepare broadcast station\n");
2674 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
2679 priv
->stations
[sta_id
].used
|= IWL_STA_DRIVER_ACTIVE
;
2680 priv
->stations
[sta_id
].used
|= IWL_STA_BCAST
;
2681 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
2686 static int __iwl3945_up(struct iwl_priv
*priv
)
2690 rc
= iwl3945_alloc_bcast_station(priv
);
2694 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2695 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2699 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2700 IWL_ERR(priv
, "ucode not available for device bring up\n");
2704 /* If platform's RF_KILL switch is NOT set to KILL */
2705 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
2706 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2707 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2709 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2710 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2714 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2716 rc
= iwl3945_hw_nic_init(priv
);
2718 IWL_ERR(priv
, "Unable to int nic\n");
2722 /* make sure rfkill handshake bits are cleared */
2723 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2724 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2725 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2727 /* clear (again), then enable host interrupts */
2728 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2729 iwl_enable_interrupts(priv
);
2731 /* really make sure rfkill handshake bits are cleared */
2732 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2733 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2735 /* Copy original ucode data image from disk into backup cache.
2736 * This will be used to initialize the on-board processor's
2737 * data SRAM for a clean start when the runtime program first loads. */
2738 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2739 priv
->ucode_data
.len
);
2741 /* We return success when we resume from suspend and rf_kill is on. */
2742 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2745 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2747 /* load bootstrap state machine,
2748 * load bootstrap program into processor's memory,
2749 * prepare to load the "initialize" uCode */
2750 rc
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
2754 "Unable to set up bootstrap uCode: %d\n", rc
);
2758 /* start card; "initialize" will load runtime ucode */
2759 iwl3945_nic_start(priv
);
2761 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2766 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2767 __iwl3945_down(priv
);
2768 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2770 /* tried to restart and config the device for as long as our
2771 * patience could withstand */
2772 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2777 /*****************************************************************************
2779 * Workqueue callbacks
2781 *****************************************************************************/
2783 static void iwl3945_bg_init_alive_start(struct work_struct
*data
)
2785 struct iwl_priv
*priv
=
2786 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2788 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2791 mutex_lock(&priv
->mutex
);
2792 iwl3945_init_alive_start(priv
);
2793 mutex_unlock(&priv
->mutex
);
2796 static void iwl3945_bg_alive_start(struct work_struct
*data
)
2798 struct iwl_priv
*priv
=
2799 container_of(data
, struct iwl_priv
, alive_start
.work
);
2801 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2804 mutex_lock(&priv
->mutex
);
2805 iwl3945_alive_start(priv
);
2806 mutex_unlock(&priv
->mutex
);
2810 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2811 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2812 * *is* readable even when device has been SW_RESET into low power mode
2813 * (e.g. during RF KILL).
2815 static void iwl3945_rfkill_poll(struct work_struct
*data
)
2817 struct iwl_priv
*priv
=
2818 container_of(data
, struct iwl_priv
, _3945
.rfkill_poll
.work
);
2819 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2820 bool new_rfkill
= !(iwl_read32(priv
, CSR_GP_CNTRL
)
2821 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2823 if (new_rfkill
!= old_rfkill
) {
2825 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2827 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2829 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, new_rfkill
);
2831 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
2832 new_rfkill
? "disable radio" : "enable radio");
2835 /* Keep this running, even if radio now enabled. This will be
2836 * cancelled in mac_start() if system decides to start again */
2837 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
2838 round_jiffies_relative(2 * HZ
));
2842 int iwl3945_request_scan(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
2844 struct iwl_host_cmd cmd
= {
2845 .id
= REPLY_SCAN_CMD
,
2846 .len
= sizeof(struct iwl3945_scan_cmd
),
2847 .flags
= CMD_SIZE_HUGE
,
2849 struct iwl3945_scan_cmd
*scan
;
2851 enum ieee80211_band band
;
2852 bool is_active
= false;
2855 lockdep_assert_held(&priv
->mutex
);
2857 if (!priv
->scan_cmd
) {
2858 priv
->scan_cmd
= kmalloc(sizeof(struct iwl3945_scan_cmd
) +
2859 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2860 if (!priv
->scan_cmd
) {
2861 IWL_DEBUG_SCAN(priv
, "Fail to allocate scan memory\n");
2865 scan
= priv
->scan_cmd
;
2866 memset(scan
, 0, sizeof(struct iwl3945_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
2868 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
2869 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
2871 if (iwl_is_associated(priv
, IWL_RXON_CTX_BSS
)) {
2874 u32 suspend_time
= 100;
2875 u32 scan_suspend_time
= 100;
2876 unsigned long flags
;
2878 IWL_DEBUG_INFO(priv
, "Scanning while associated...\n");
2880 spin_lock_irqsave(&priv
->lock
, flags
);
2881 if (priv
->is_internal_short_scan
)
2884 interval
= vif
->bss_conf
.beacon_int
;
2885 spin_unlock_irqrestore(&priv
->lock
, flags
);
2887 scan
->suspend_time
= 0;
2888 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2890 interval
= suspend_time
;
2892 * suspend time format:
2893 * 0-19: beacon interval in usec (time before exec.)
2895 * 24-31: number of beacons (suspend between channels)
2898 extra
= (suspend_time
/ interval
) << 24;
2899 scan_suspend_time
= 0xFF0FFFFF &
2900 (extra
| ((suspend_time
% interval
) * 1024));
2902 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2903 IWL_DEBUG_SCAN(priv
, "suspend_time 0x%X beacon interval %d\n",
2904 scan_suspend_time
, interval
);
2907 if (priv
->is_internal_short_scan
) {
2908 IWL_DEBUG_SCAN(priv
, "Start internal passive scan.\n");
2909 } else if (priv
->scan_request
->n_ssids
) {
2911 IWL_DEBUG_SCAN(priv
, "Kicking off active scan\n");
2912 for (i
= 0; i
< priv
->scan_request
->n_ssids
; i
++) {
2913 /* always does wildcard anyway */
2914 if (!priv
->scan_request
->ssids
[i
].ssid_len
)
2916 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2917 scan
->direct_scan
[p
].len
=
2918 priv
->scan_request
->ssids
[i
].ssid_len
;
2919 memcpy(scan
->direct_scan
[p
].ssid
,
2920 priv
->scan_request
->ssids
[i
].ssid
,
2921 priv
->scan_request
->ssids
[i
].ssid_len
);
2927 IWL_DEBUG_SCAN(priv
, "Kicking off passive scan.\n");
2929 /* We don't build a direct scan probe request; the uCode will do
2930 * that based on the direct_mask added to each channel entry */
2931 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2932 scan
->tx_cmd
.sta_id
= priv
->contexts
[IWL_RXON_CTX_BSS
].bcast_sta_id
;
2933 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2935 /* flags + rate selection */
2937 switch (priv
->scan_band
) {
2938 case IEEE80211_BAND_2GHZ
:
2939 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2940 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
2941 band
= IEEE80211_BAND_2GHZ
;
2943 case IEEE80211_BAND_5GHZ
:
2944 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
2945 band
= IEEE80211_BAND_5GHZ
;
2948 IWL_WARN(priv
, "Invalid scan band\n");
2953 * If active scaning is requested but a certain channel
2954 * is marked passive, we can do active scanning if we
2955 * detect transmissions.
2957 scan
->good_CRC_th
= is_active
? IWL_GOOD_CRC_TH_DEFAULT
:
2958 IWL_GOOD_CRC_TH_DISABLED
;
2960 if (!priv
->is_internal_short_scan
) {
2961 scan
->tx_cmd
.len
= cpu_to_le16(
2962 iwl_fill_probe_req(priv
,
2963 (struct ieee80211_mgmt
*)scan
->data
,
2965 priv
->scan_request
->ie
,
2966 priv
->scan_request
->ie_len
,
2967 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2969 /* use bcast addr, will not be transmitted but must be valid */
2970 scan
->tx_cmd
.len
= cpu_to_le16(
2971 iwl_fill_probe_req(priv
,
2972 (struct ieee80211_mgmt
*)scan
->data
,
2973 iwl_bcast_addr
, NULL
, 0,
2974 IWL_MAX_SCAN_SIZE
- sizeof(*scan
)));
2976 /* select Rx antennas */
2977 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
2979 if (priv
->is_internal_short_scan
) {
2980 scan
->channel_count
=
2981 iwl3945_get_single_channel_for_scan(priv
, vif
, band
,
2982 (void *)&scan
->data
[le16_to_cpu(
2983 scan
->tx_cmd
.len
)]);
2985 scan
->channel_count
=
2986 iwl3945_get_channels_for_scan(priv
, band
, is_active
, n_probes
,
2987 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)], vif
);
2990 if (scan
->channel_count
== 0) {
2991 IWL_DEBUG_SCAN(priv
, "channel count %d\n", scan
->channel_count
);
2995 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
2996 scan
->channel_count
* sizeof(struct iwl3945_scan_channel
);
2998 scan
->len
= cpu_to_le16(cmd
.len
);
3000 set_bit(STATUS_SCAN_HW
, &priv
->status
);
3001 ret
= iwl_send_cmd_sync(priv
, &cmd
);
3003 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3007 void iwl3945_post_scan(struct iwl_priv
*priv
)
3009 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3012 * Since setting the RXON may have been deferred while
3013 * performing the scan, fire one off if needed
3015 if (memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
3016 iwl3945_commit_rxon(priv
, ctx
);
3019 static void iwl3945_bg_restart(struct work_struct
*data
)
3021 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
3023 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3026 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
3027 struct iwl_rxon_context
*ctx
;
3028 mutex_lock(&priv
->mutex
);
3029 for_each_context(priv
, ctx
)
3032 mutex_unlock(&priv
->mutex
);
3034 ieee80211_restart_hw(priv
->hw
);
3038 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3041 mutex_lock(&priv
->mutex
);
3043 mutex_unlock(&priv
->mutex
);
3047 static void iwl3945_bg_rx_replenish(struct work_struct
*data
)
3049 struct iwl_priv
*priv
=
3050 container_of(data
, struct iwl_priv
, rx_replenish
);
3052 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3055 mutex_lock(&priv
->mutex
);
3056 iwl3945_rx_replenish(priv
);
3057 mutex_unlock(&priv
->mutex
);
3060 void iwl3945_post_associate(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
3063 struct ieee80211_conf
*conf
= NULL
;
3064 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3066 if (!vif
|| !priv
->is_open
)
3069 if (vif
->type
== NL80211_IFTYPE_AP
) {
3070 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
3074 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
3075 vif
->bss_conf
.aid
, ctx
->active
.bssid_addr
);
3077 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3080 iwl_scan_cancel_timeout(priv
, 200);
3082 conf
= ieee80211_get_hw_conf(priv
->hw
);
3084 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3085 iwl3945_commit_rxon(priv
, ctx
);
3087 rc
= iwl_send_rxon_timing(priv
, ctx
);
3089 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3090 "Attempting to continue.\n");
3092 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3094 ctx
->staging
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
3096 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
3097 vif
->bss_conf
.aid
, vif
->bss_conf
.beacon_int
);
3099 if (vif
->bss_conf
.use_short_preamble
)
3100 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
3102 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3104 if (ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
3105 if (vif
->bss_conf
.use_short_slot
)
3106 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
3108 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
3111 iwl3945_commit_rxon(priv
, ctx
);
3113 switch (vif
->type
) {
3114 case NL80211_IFTYPE_STATION
:
3115 iwl3945_rate_scale_init(priv
->hw
, IWL_AP_ID
);
3117 case NL80211_IFTYPE_ADHOC
:
3118 iwl3945_send_beacon_cmd(priv
);
3121 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
3122 __func__
, vif
->type
);
3127 /*****************************************************************************
3129 * mac80211 entry point functions
3131 *****************************************************************************/
3133 #define UCODE_READY_TIMEOUT (2 * HZ)
3135 static int iwl3945_mac_start(struct ieee80211_hw
*hw
)
3137 struct iwl_priv
*priv
= hw
->priv
;
3140 IWL_DEBUG_MAC80211(priv
, "enter\n");
3142 /* we should be verifying the device is ready to be opened */
3143 mutex_lock(&priv
->mutex
);
3145 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3146 * ucode filename and max sizes are card-specific. */
3148 if (!priv
->ucode_code
.len
) {
3149 ret
= iwl3945_read_ucode(priv
);
3151 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
3152 mutex_unlock(&priv
->mutex
);
3153 goto out_release_irq
;
3157 ret
= __iwl3945_up(priv
);
3159 mutex_unlock(&priv
->mutex
);
3162 goto out_release_irq
;
3164 IWL_DEBUG_INFO(priv
, "Start UP work.\n");
3166 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3167 * mac80211 will not be run successfully. */
3168 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3169 test_bit(STATUS_READY
, &priv
->status
),
3170 UCODE_READY_TIMEOUT
);
3172 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3174 "Wait for START_ALIVE timeout after %dms.\n",
3175 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3177 goto out_release_irq
;
3181 /* ucode is running and will send rfkill notifications,
3182 * no need to poll the killswitch state anymore */
3183 cancel_delayed_work(&priv
->_3945
.rfkill_poll
);
3185 iwl_led_start(priv
);
3188 IWL_DEBUG_MAC80211(priv
, "leave\n");
3193 IWL_DEBUG_MAC80211(priv
, "leave - failed\n");
3197 static void iwl3945_mac_stop(struct ieee80211_hw
*hw
)
3199 struct iwl_priv
*priv
= hw
->priv
;
3201 IWL_DEBUG_MAC80211(priv
, "enter\n");
3203 if (!priv
->is_open
) {
3204 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
3212 flush_workqueue(priv
->workqueue
);
3214 /* start polling the killswitch state again */
3215 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
3216 round_jiffies_relative(2 * HZ
));
3218 IWL_DEBUG_MAC80211(priv
, "leave\n");
3221 static int iwl3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3223 struct iwl_priv
*priv
= hw
->priv
;
3225 IWL_DEBUG_MAC80211(priv
, "enter\n");
3227 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3228 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3230 if (iwl3945_tx_skb(priv
, skb
))
3231 dev_kfree_skb_any(skb
);
3233 IWL_DEBUG_MAC80211(priv
, "leave\n");
3234 return NETDEV_TX_OK
;
3237 void iwl3945_config_ap(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
3239 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3242 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3245 /* The following should be done only at AP bring up */
3246 if (!(iwl_is_associated(priv
, IWL_RXON_CTX_BSS
))) {
3248 /* RXON - unassoc (to set timing command) */
3249 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3250 iwl3945_commit_rxon(priv
, ctx
);
3253 rc
= iwl_send_rxon_timing(priv
, ctx
);
3255 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3256 "Attempting to continue.\n");
3258 ctx
->staging
.assoc_id
= 0;
3260 if (vif
->bss_conf
.use_short_preamble
)
3261 ctx
->staging
.flags
|=
3262 RXON_FLG_SHORT_PREAMBLE_MSK
;
3264 ctx
->staging
.flags
&=
3265 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3267 if (ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
3268 if (vif
->bss_conf
.use_short_slot
)
3269 ctx
->staging
.flags
|=
3270 RXON_FLG_SHORT_SLOT_MSK
;
3272 ctx
->staging
.flags
&=
3273 ~RXON_FLG_SHORT_SLOT_MSK
;
3275 /* restore RXON assoc */
3276 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3277 iwl3945_commit_rxon(priv
, ctx
);
3279 iwl3945_send_beacon_cmd(priv
);
3281 /* FIXME - we need to add code here to detect a totally new
3282 * configuration, reset the AP, unassoc, rxon timing, assoc,
3283 * clear sta table, add BCAST sta... */
3286 static int iwl3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3287 struct ieee80211_vif
*vif
,
3288 struct ieee80211_sta
*sta
,
3289 struct ieee80211_key_conf
*key
)
3291 struct iwl_priv
*priv
= hw
->priv
;
3293 u8 sta_id
= IWL_INVALID_STATION
;
3296 IWL_DEBUG_MAC80211(priv
, "enter\n");
3298 if (iwl3945_mod_params
.sw_crypto
) {
3299 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3303 static_key
= !iwl_is_associated(priv
, IWL_RXON_CTX_BSS
);
3306 sta_id
= iwl_sta_id_or_broadcast(
3307 priv
, &priv
->contexts
[IWL_RXON_CTX_BSS
], sta
);
3308 if (sta_id
== IWL_INVALID_STATION
)
3312 mutex_lock(&priv
->mutex
);
3313 iwl_scan_cancel_timeout(priv
, 100);
3318 ret
= iwl3945_set_static_key(priv
, key
);
3320 ret
= iwl3945_set_dynamic_key(priv
, key
, sta_id
);
3321 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3325 ret
= iwl3945_remove_static_key(priv
);
3327 ret
= iwl3945_clear_sta_key_info(priv
, sta_id
);
3328 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3334 mutex_unlock(&priv
->mutex
);
3335 IWL_DEBUG_MAC80211(priv
, "leave\n");
3340 static int iwl3945_mac_sta_add(struct ieee80211_hw
*hw
,
3341 struct ieee80211_vif
*vif
,
3342 struct ieee80211_sta
*sta
)
3344 struct iwl_priv
*priv
= hw
->priv
;
3345 struct iwl3945_sta_priv
*sta_priv
= (void *)sta
->drv_priv
;
3347 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
3350 IWL_DEBUG_INFO(priv
, "received request to add station %pM\n",
3352 mutex_lock(&priv
->mutex
);
3353 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
3355 sta_priv
->common
.sta_id
= IWL_INVALID_STATION
;
3358 ret
= iwl_add_station_common(priv
, &priv
->contexts
[IWL_RXON_CTX_BSS
],
3359 sta
->addr
, is_ap
, sta
, &sta_id
);
3361 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
3363 /* Should we return success if return code is EEXIST ? */
3364 mutex_unlock(&priv
->mutex
);
3368 sta_priv
->common
.sta_id
= sta_id
;
3370 /* Initialize rate scaling */
3371 IWL_DEBUG_INFO(priv
, "Initializing rate scaling for station %pM\n",
3373 iwl3945_rs_rate_init(priv
, sta
, sta_id
);
3374 mutex_unlock(&priv
->mutex
);
3379 static void iwl3945_configure_filter(struct ieee80211_hw
*hw
,
3380 unsigned int changed_flags
,
3381 unsigned int *total_flags
,
3384 struct iwl_priv
*priv
= hw
->priv
;
3385 __le32 filter_or
= 0, filter_nand
= 0;
3386 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3388 #define CHK(test, flag) do { \
3389 if (*total_flags & (test)) \
3390 filter_or |= (flag); \
3392 filter_nand |= (flag); \
3395 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
3396 changed_flags
, *total_flags
);
3398 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
3399 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
);
3400 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
3404 mutex_lock(&priv
->mutex
);
3406 ctx
->staging
.filter_flags
&= ~filter_nand
;
3407 ctx
->staging
.filter_flags
|= filter_or
;
3410 * Not committing directly because hardware can perform a scan,
3411 * but even if hw is ready, committing here breaks for some reason,
3412 * we'll eventually commit the filter flags change anyway.
3415 mutex_unlock(&priv
->mutex
);
3418 * Receiving all multicast frames is always enabled by the
3419 * default flags setup in iwl_connection_init_rx_config()
3420 * since we currently do not support programming multicast
3421 * filters into the device.
3423 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
3424 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
3428 /*****************************************************************************
3432 *****************************************************************************/
3434 #ifdef CONFIG_IWLWIFI_DEBUG
3437 * The following adds a new attribute to the sysfs representation
3438 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3439 * used for controlling the debug level.
3441 * See the level definitions in iwl for details.
3443 * The debug_level being managed using sysfs below is a per device debug
3444 * level that is used instead of the global debug level if it (the per
3445 * device debug level) is set.
3447 static ssize_t
show_debug_level(struct device
*d
,
3448 struct device_attribute
*attr
, char *buf
)
3450 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3451 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3453 static ssize_t
store_debug_level(struct device
*d
,
3454 struct device_attribute
*attr
,
3455 const char *buf
, size_t count
)
3457 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3461 ret
= strict_strtoul(buf
, 0, &val
);
3463 IWL_INFO(priv
, "%s is not in hex or decimal form.\n", buf
);
3465 priv
->debug_level
= val
;
3466 if (iwl_alloc_traffic_mem(priv
))
3468 "Not enough memory to generate traffic log\n");
3470 return strnlen(buf
, count
);
3473 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3474 show_debug_level
, store_debug_level
);
3476 #endif /* CONFIG_IWLWIFI_DEBUG */
3478 static ssize_t
show_temperature(struct device
*d
,
3479 struct device_attribute
*attr
, char *buf
)
3481 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3483 if (!iwl_is_alive(priv
))
3486 return sprintf(buf
, "%d\n", iwl3945_hw_get_temperature(priv
));
3489 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3491 static ssize_t
show_tx_power(struct device
*d
,
3492 struct device_attribute
*attr
, char *buf
)
3494 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3495 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3498 static ssize_t
store_tx_power(struct device
*d
,
3499 struct device_attribute
*attr
,
3500 const char *buf
, size_t count
)
3502 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3503 char *p
= (char *)buf
;
3506 val
= simple_strtoul(p
, &p
, 10);
3508 IWL_INFO(priv
, ": %s is not in decimal form.\n", buf
);
3510 iwl3945_hw_reg_set_txpower(priv
, val
);
3515 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3517 static ssize_t
show_flags(struct device
*d
,
3518 struct device_attribute
*attr
, char *buf
)
3520 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3521 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3523 return sprintf(buf
, "0x%04X\n", ctx
->active
.flags
);
3526 static ssize_t
store_flags(struct device
*d
,
3527 struct device_attribute
*attr
,
3528 const char *buf
, size_t count
)
3530 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3531 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3532 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3534 mutex_lock(&priv
->mutex
);
3535 if (le32_to_cpu(ctx
->staging
.flags
) != flags
) {
3536 /* Cancel any currently running scans... */
3537 if (iwl_scan_cancel_timeout(priv
, 100))
3538 IWL_WARN(priv
, "Could not cancel scan.\n");
3540 IWL_DEBUG_INFO(priv
, "Committing rxon.flags = 0x%04X\n",
3542 ctx
->staging
.flags
= cpu_to_le32(flags
);
3543 iwl3945_commit_rxon(priv
, ctx
);
3546 mutex_unlock(&priv
->mutex
);
3551 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3553 static ssize_t
show_filter_flags(struct device
*d
,
3554 struct device_attribute
*attr
, char *buf
)
3556 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3557 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3559 return sprintf(buf
, "0x%04X\n",
3560 le32_to_cpu(ctx
->active
.filter_flags
));
3563 static ssize_t
store_filter_flags(struct device
*d
,
3564 struct device_attribute
*attr
,
3565 const char *buf
, size_t count
)
3567 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3568 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3569 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3571 mutex_lock(&priv
->mutex
);
3572 if (le32_to_cpu(ctx
->staging
.filter_flags
) != filter_flags
) {
3573 /* Cancel any currently running scans... */
3574 if (iwl_scan_cancel_timeout(priv
, 100))
3575 IWL_WARN(priv
, "Could not cancel scan.\n");
3577 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3578 "0x%04X\n", filter_flags
);
3579 ctx
->staging
.filter_flags
=
3580 cpu_to_le32(filter_flags
);
3581 iwl3945_commit_rxon(priv
, ctx
);
3584 mutex_unlock(&priv
->mutex
);
3589 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3590 store_filter_flags
);
3592 static ssize_t
show_measurement(struct device
*d
,
3593 struct device_attribute
*attr
, char *buf
)
3595 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3596 struct iwl_spectrum_notification measure_report
;
3597 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3598 u8
*data
= (u8
*)&measure_report
;
3599 unsigned long flags
;
3601 spin_lock_irqsave(&priv
->lock
, flags
);
3602 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
3603 spin_unlock_irqrestore(&priv
->lock
, flags
);
3606 memcpy(&measure_report
, &priv
->measure_report
, size
);
3607 priv
->measurement_status
= 0;
3608 spin_unlock_irqrestore(&priv
->lock
, flags
);
3610 while (size
&& (PAGE_SIZE
- len
)) {
3611 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3612 PAGE_SIZE
- len
, 1);
3614 if (PAGE_SIZE
- len
)
3618 size
-= min(size
, 16U);
3624 static ssize_t
store_measurement(struct device
*d
,
3625 struct device_attribute
*attr
,
3626 const char *buf
, size_t count
)
3628 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3629 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
3630 struct ieee80211_measurement_params params
= {
3631 .channel
= le16_to_cpu(ctx
->active
.channel
),
3632 .start_time
= cpu_to_le64(priv
->_3945
.last_tsf
),
3633 .duration
= cpu_to_le16(1),
3635 u8 type
= IWL_MEASURE_BASIC
;
3641 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3642 channel
= simple_strtoul(p
, NULL
, 0);
3644 params
.channel
= channel
;
3647 while (*p
&& *p
!= ' ')
3650 type
= simple_strtoul(p
+ 1, NULL
, 0);
3653 IWL_DEBUG_INFO(priv
, "Invoking measurement of type %d on "
3654 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3655 iwl3945_get_measurement(priv
, ¶ms
, type
);
3660 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3661 show_measurement
, store_measurement
);
3663 static ssize_t
store_retry_rate(struct device
*d
,
3664 struct device_attribute
*attr
,
3665 const char *buf
, size_t count
)
3667 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3669 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3670 if (priv
->retry_rate
<= 0)
3671 priv
->retry_rate
= 1;
3676 static ssize_t
show_retry_rate(struct device
*d
,
3677 struct device_attribute
*attr
, char *buf
)
3679 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3680 return sprintf(buf
, "%d", priv
->retry_rate
);
3683 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
3687 static ssize_t
show_channels(struct device
*d
,
3688 struct device_attribute
*attr
, char *buf
)
3690 /* all this shit doesn't belong into sysfs anyway */
3694 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
3696 static ssize_t
show_antenna(struct device
*d
,
3697 struct device_attribute
*attr
, char *buf
)
3699 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3701 if (!iwl_is_alive(priv
))
3704 return sprintf(buf
, "%d\n", iwl3945_mod_params
.antenna
);
3707 static ssize_t
store_antenna(struct device
*d
,
3708 struct device_attribute
*attr
,
3709 const char *buf
, size_t count
)
3711 struct iwl_priv
*priv __maybe_unused
= dev_get_drvdata(d
);
3717 if (sscanf(buf
, "%1i", &ant
) != 1) {
3718 IWL_DEBUG_INFO(priv
, "not in hex or decimal form.\n");
3722 if ((ant
>= 0) && (ant
<= 2)) {
3723 IWL_DEBUG_INFO(priv
, "Setting antenna select to %d.\n", ant
);
3724 iwl3945_mod_params
.antenna
= (enum iwl3945_antenna
)ant
;
3726 IWL_DEBUG_INFO(priv
, "Bad antenna select value %d.\n", ant
);
3732 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
3734 static ssize_t
show_status(struct device
*d
,
3735 struct device_attribute
*attr
, char *buf
)
3737 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3738 if (!iwl_is_alive(priv
))
3740 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
3743 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
3745 static ssize_t
dump_error_log(struct device
*d
,
3746 struct device_attribute
*attr
,
3747 const char *buf
, size_t count
)
3749 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3750 char *p
= (char *)buf
;
3753 iwl3945_dump_nic_error_log(priv
);
3755 return strnlen(buf
, count
);
3758 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
3760 /*****************************************************************************
3762 * driver setup and tear down
3764 *****************************************************************************/
3766 static void iwl3945_setup_deferred_work(struct iwl_priv
*priv
)
3768 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3770 init_waitqueue_head(&priv
->wait_command_queue
);
3772 INIT_WORK(&priv
->restart
, iwl3945_bg_restart
);
3773 INIT_WORK(&priv
->rx_replenish
, iwl3945_bg_rx_replenish
);
3774 INIT_WORK(&priv
->beacon_update
, iwl3945_bg_beacon_update
);
3775 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl3945_bg_init_alive_start
);
3776 INIT_DELAYED_WORK(&priv
->alive_start
, iwl3945_bg_alive_start
);
3777 INIT_DELAYED_WORK(&priv
->_3945
.rfkill_poll
, iwl3945_rfkill_poll
);
3779 iwl_setup_scan_deferred_work(priv
);
3781 iwl3945_hw_setup_deferred_work(priv
);
3783 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
3784 init_timer(&priv
->monitor_recover
);
3785 priv
->monitor_recover
.data
= (unsigned long)priv
;
3786 priv
->monitor_recover
.function
=
3787 priv
->cfg
->ops
->lib
->recover_from_tx_stall
;
3790 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3791 iwl3945_irq_tasklet
, (unsigned long)priv
);
3794 static void iwl3945_cancel_deferred_work(struct iwl_priv
*priv
)
3796 iwl3945_hw_cancel_deferred_work(priv
);
3798 cancel_delayed_work_sync(&priv
->init_alive_start
);
3799 cancel_delayed_work(&priv
->alive_start
);
3800 cancel_work_sync(&priv
->beacon_update
);
3802 iwl_cancel_scan_deferred_work(priv
);
3805 static struct attribute
*iwl3945_sysfs_entries
[] = {
3806 &dev_attr_antenna
.attr
,
3807 &dev_attr_channels
.attr
,
3808 &dev_attr_dump_errors
.attr
,
3809 &dev_attr_flags
.attr
,
3810 &dev_attr_filter_flags
.attr
,
3811 &dev_attr_measurement
.attr
,
3812 &dev_attr_retry_rate
.attr
,
3813 &dev_attr_status
.attr
,
3814 &dev_attr_temperature
.attr
,
3815 &dev_attr_tx_power
.attr
,
3816 #ifdef CONFIG_IWLWIFI_DEBUG
3817 &dev_attr_debug_level
.attr
,
3822 static struct attribute_group iwl3945_attribute_group
= {
3823 .name
= NULL
, /* put in device directory */
3824 .attrs
= iwl3945_sysfs_entries
,
3827 struct ieee80211_ops iwl3945_hw_ops
= {
3828 .tx
= iwl3945_mac_tx
,
3829 .start
= iwl3945_mac_start
,
3830 .stop
= iwl3945_mac_stop
,
3831 .add_interface
= iwl_mac_add_interface
,
3832 .remove_interface
= iwl_mac_remove_interface
,
3833 .config
= iwl_mac_config
,
3834 .configure_filter
= iwl3945_configure_filter
,
3835 .set_key
= iwl3945_mac_set_key
,
3836 .conf_tx
= iwl_mac_conf_tx
,
3837 .reset_tsf
= iwl_mac_reset_tsf
,
3838 .bss_info_changed
= iwl_bss_info_changed
,
3839 .hw_scan
= iwl_mac_hw_scan
,
3840 .sta_add
= iwl3945_mac_sta_add
,
3841 .sta_remove
= iwl_mac_sta_remove
,
3842 .tx_last_beacon
= iwl_mac_tx_last_beacon
,
3845 static int iwl3945_init_drv(struct iwl_priv
*priv
)
3848 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
3850 priv
->retry_rate
= 1;
3851 priv
->beacon_skb
= NULL
;
3853 spin_lock_init(&priv
->sta_lock
);
3854 spin_lock_init(&priv
->hcmd_lock
);
3856 INIT_LIST_HEAD(&priv
->free_frames
);
3858 mutex_init(&priv
->mutex
);
3859 mutex_init(&priv
->sync_cmd_mutex
);
3861 priv
->ieee_channels
= NULL
;
3862 priv
->ieee_rates
= NULL
;
3863 priv
->band
= IEEE80211_BAND_2GHZ
;
3865 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3866 priv
->missed_beacon_threshold
= IWL_MISSED_BEACON_THRESHOLD_DEF
;
3868 priv
->tx_power_user_lmt
= IWL_DEFAULT_TX_POWER
;
3869 priv
->tx_power_next
= IWL_DEFAULT_TX_POWER
;
3871 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3872 IWL_WARN(priv
, "Unsupported EEPROM version: 0x%04X\n",
3877 ret
= iwl_init_channel_map(priv
);
3879 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3883 /* Set up txpower settings in driver for all channels */
3884 if (iwl3945_txpower_set_from_eeprom(priv
)) {
3886 goto err_free_channel_map
;
3889 ret
= iwlcore_init_geos(priv
);
3891 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3892 goto err_free_channel_map
;
3894 iwl3945_init_hw_rates(priv
, priv
->ieee_rates
);
3898 err_free_channel_map
:
3899 iwl_free_channel_map(priv
);
3904 #define IWL3945_MAX_PROBE_REQUEST 200
3906 static int iwl3945_setup_mac(struct iwl_priv
*priv
)
3909 struct ieee80211_hw
*hw
= priv
->hw
;
3911 hw
->rate_control_algorithm
= "iwl-3945-rs";
3912 hw
->sta_data_size
= sizeof(struct iwl3945_sta_priv
);
3913 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
3915 /* Tell mac80211 our characteristics */
3916 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3917 IEEE80211_HW_SPECTRUM_MGMT
;
3919 if (!priv
->cfg
->base_params
->broken_powersave
)
3920 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
3921 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
3923 hw
->wiphy
->interface_modes
=
3924 priv
->contexts
[IWL_RXON_CTX_BSS
].interface_modes
;
3926 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
3927 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
3929 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3930 /* we create the 802.11 header and a zero-length SSID element */
3931 hw
->wiphy
->max_scan_ie_len
= IWL3945_MAX_PROBE_REQUEST
- 24 - 2;
3933 /* Default value; 4 EDCA QOS priorities */
3936 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3937 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3938 &priv
->bands
[IEEE80211_BAND_2GHZ
];
3940 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3941 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3942 &priv
->bands
[IEEE80211_BAND_5GHZ
];
3944 ret
= ieee80211_register_hw(priv
->hw
);
3946 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
3949 priv
->mac80211_registered
= 1;
3954 static int iwl3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3957 struct iwl_priv
*priv
;
3958 struct ieee80211_hw
*hw
;
3959 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3960 struct iwl3945_eeprom
*eeprom
;
3961 unsigned long flags
;
3963 /***********************
3964 * 1. Allocating HW data
3965 * ********************/
3967 /* mac80211 allocates memory for this device instance, including
3968 * space for this driver's private structure */
3969 hw
= iwl_alloc_all(cfg
);
3971 pr_err("Can not allocate network device\n");
3976 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3978 priv
->cmd_queue
= IWL39_CMD_QUEUE_NUM
;
3980 /* 3945 has only one valid context */
3981 priv
->valid_contexts
= BIT(IWL_RXON_CTX_BSS
);
3983 for (i
= 0; i
< NUM_IWL_RXON_CTX
; i
++)
3984 priv
->contexts
[i
].ctxid
= i
;
3986 priv
->contexts
[IWL_RXON_CTX_BSS
].rxon_cmd
= REPLY_RXON
;
3987 priv
->contexts
[IWL_RXON_CTX_BSS
].rxon_timing_cmd
= REPLY_RXON_TIMING
;
3988 priv
->contexts
[IWL_RXON_CTX_BSS
].rxon_assoc_cmd
= REPLY_RXON_ASSOC
;
3989 priv
->contexts
[IWL_RXON_CTX_BSS
].qos_cmd
= REPLY_QOS_PARAM
;
3990 priv
->contexts
[IWL_RXON_CTX_BSS
].ap_sta_id
= IWL_AP_ID
;
3991 priv
->contexts
[IWL_RXON_CTX_BSS
].wep_key_cmd
= REPLY_WEPKEY
;
3992 priv
->contexts
[IWL_RXON_CTX_BSS
].interface_modes
=
3993 BIT(NL80211_IFTYPE_STATION
) |
3994 BIT(NL80211_IFTYPE_ADHOC
);
3995 priv
->contexts
[IWL_RXON_CTX_BSS
].ibss_devtype
= RXON_DEV_TYPE_IBSS
;
3996 priv
->contexts
[IWL_RXON_CTX_BSS
].station_devtype
= RXON_DEV_TYPE_ESS
;
3997 priv
->contexts
[IWL_RXON_CTX_BSS
].unused_devtype
= RXON_DEV_TYPE_ESS
;
4000 * Disabling hardware scan means that mac80211 will perform scans
4001 * "the hard way", rather than using device's scan.
4003 if (iwl3945_mod_params
.disable_hw_scan
) {
4004 IWL_ERR(priv
, "sw scan support is deprecated\n");
4005 iwl3945_hw_ops
.hw_scan
= NULL
;
4009 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
4011 priv
->pci_dev
= pdev
;
4012 priv
->inta_mask
= CSR_INI_SET_MASK
;
4014 if (iwl_alloc_traffic_mem(priv
))
4015 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
4017 /***************************
4018 * 2. Initializing PCI bus
4019 * *************************/
4020 pci_disable_link_state(pdev
, PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
|
4021 PCIE_LINK_STATE_CLKPM
);
4023 if (pci_enable_device(pdev
)) {
4025 goto out_ieee80211_free_hw
;
4028 pci_set_master(pdev
);
4030 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4032 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4034 IWL_WARN(priv
, "No suitable DMA available.\n");
4035 goto out_pci_disable_device
;
4038 pci_set_drvdata(pdev
, priv
);
4039 err
= pci_request_regions(pdev
, DRV_NAME
);
4041 goto out_pci_disable_device
;
4043 /***********************
4044 * 3. Read REV Register
4045 * ********************/
4046 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
4047 if (!priv
->hw_base
) {
4049 goto out_pci_release_regions
;
4052 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
4053 (unsigned long long) pci_resource_len(pdev
, 0));
4054 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
4056 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4057 * PCI Tx retries from interfering with C3 CPU state */
4058 pci_write_config_byte(pdev
, 0x41, 0x00);
4060 /* these spin locks will be used in apm_ops.init and EEPROM access
4061 * we should init now
4063 spin_lock_init(&priv
->reg_lock
);
4064 spin_lock_init(&priv
->lock
);
4067 * stop and reset the on-board processor just in case it is in a
4068 * strange state ... like being left stranded by a primary kernel
4069 * and this is now the kdump kernel trying to start up
4071 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
4073 /***********************
4075 * ********************/
4077 /* Read the EEPROM */
4078 err
= iwl_eeprom_init(priv
);
4080 IWL_ERR(priv
, "Unable to init EEPROM\n");
4083 /* MAC Address location in EEPROM same for 3945/4965 */
4084 eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
4085 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", eeprom
->mac_address
);
4086 SET_IEEE80211_PERM_ADDR(priv
->hw
, eeprom
->mac_address
);
4088 /***********************
4089 * 5. Setup HW Constants
4090 * ********************/
4091 /* Device-specific setup */
4092 if (iwl3945_hw_set_hw_params(priv
)) {
4093 IWL_ERR(priv
, "failed to set hw settings\n");
4094 goto out_eeprom_free
;
4097 /***********************
4099 * ********************/
4101 err
= iwl3945_init_drv(priv
);
4103 IWL_ERR(priv
, "initializing driver failed\n");
4104 goto out_unset_hw_params
;
4107 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s\n",
4110 /***********************
4112 * ********************/
4114 spin_lock_irqsave(&priv
->lock
, flags
);
4115 iwl_disable_interrupts(priv
);
4116 spin_unlock_irqrestore(&priv
->lock
, flags
);
4118 pci_enable_msi(priv
->pci_dev
);
4120 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
4121 IRQF_SHARED
, DRV_NAME
, priv
);
4123 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
4124 goto out_disable_msi
;
4127 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4129 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
4130 goto out_release_irq
;
4133 iwl_set_rxon_channel(priv
,
4134 &priv
->bands
[IEEE80211_BAND_2GHZ
].channels
[5],
4135 &priv
->contexts
[IWL_RXON_CTX_BSS
]);
4136 iwl3945_setup_deferred_work(priv
);
4137 iwl3945_setup_rx_handlers(priv
);
4138 iwl_power_initialize(priv
);
4140 /*********************************
4141 * 8. Setup and Register mac80211
4142 * *******************************/
4144 iwl_enable_interrupts(priv
);
4146 err
= iwl3945_setup_mac(priv
);
4148 goto out_remove_sysfs
;
4150 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
4152 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
4154 /* Start monitoring the killswitch */
4155 queue_delayed_work(priv
->workqueue
, &priv
->_3945
.rfkill_poll
,
4161 destroy_workqueue(priv
->workqueue
);
4162 priv
->workqueue
= NULL
;
4163 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4165 free_irq(priv
->pci_dev
->irq
, priv
);
4167 pci_disable_msi(priv
->pci_dev
);
4168 iwlcore_free_geos(priv
);
4169 iwl_free_channel_map(priv
);
4170 out_unset_hw_params
:
4171 iwl3945_unset_hw_params(priv
);
4173 iwl_eeprom_free(priv
);
4175 pci_iounmap(pdev
, priv
->hw_base
);
4176 out_pci_release_regions
:
4177 pci_release_regions(pdev
);
4178 out_pci_disable_device
:
4179 pci_set_drvdata(pdev
, NULL
);
4180 pci_disable_device(pdev
);
4181 out_ieee80211_free_hw
:
4182 iwl_free_traffic_mem(priv
);
4183 ieee80211_free_hw(priv
->hw
);
4188 static void __devexit
iwl3945_pci_remove(struct pci_dev
*pdev
)
4190 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
4191 unsigned long flags
;
4196 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
4198 iwl_dbgfs_unregister(priv
);
4200 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
4202 if (priv
->mac80211_registered
) {
4203 ieee80211_unregister_hw(priv
->hw
);
4204 priv
->mac80211_registered
= 0;
4210 * Make sure device is reset to low power before unloading driver.
4211 * This may be redundant with iwl_down(), but there are paths to
4212 * run iwl_down() without calling apm_ops.stop(), and there are
4213 * paths to avoid running iwl_down() at all before leaving driver.
4214 * This (inexpensive) call *makes sure* device is reset.
4218 /* make sure we flush any pending irq or
4219 * tasklet for the driver
4221 spin_lock_irqsave(&priv
->lock
, flags
);
4222 iwl_disable_interrupts(priv
);
4223 spin_unlock_irqrestore(&priv
->lock
, flags
);
4225 iwl_synchronize_irq(priv
);
4227 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl3945_attribute_group
);
4229 cancel_delayed_work_sync(&priv
->_3945
.rfkill_poll
);
4231 iwl3945_dealloc_ucode_pci(priv
);
4234 iwl3945_rx_queue_free(priv
, &priv
->rxq
);
4235 iwl3945_hw_txq_ctx_free(priv
);
4237 iwl3945_unset_hw_params(priv
);
4239 /*netif_stop_queue(dev); */
4240 flush_workqueue(priv
->workqueue
);
4242 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4243 * priv->workqueue... so we can't take down the workqueue
4245 destroy_workqueue(priv
->workqueue
);
4246 priv
->workqueue
= NULL
;
4247 iwl_free_traffic_mem(priv
);
4249 free_irq(pdev
->irq
, priv
);
4250 pci_disable_msi(pdev
);
4252 pci_iounmap(pdev
, priv
->hw_base
);
4253 pci_release_regions(pdev
);
4254 pci_disable_device(pdev
);
4255 pci_set_drvdata(pdev
, NULL
);
4257 iwl_free_channel_map(priv
);
4258 iwlcore_free_geos(priv
);
4259 kfree(priv
->scan_cmd
);
4260 if (priv
->beacon_skb
)
4261 dev_kfree_skb(priv
->beacon_skb
);
4263 ieee80211_free_hw(priv
->hw
);
4267 /*****************************************************************************
4269 * driver and module entry point
4271 *****************************************************************************/
4273 static struct pci_driver iwl3945_driver
= {
4275 .id_table
= iwl3945_hw_card_ids
,
4276 .probe
= iwl3945_pci_probe
,
4277 .remove
= __devexit_p(iwl3945_pci_remove
),
4278 .driver
.pm
= IWL_PM_OPS
,
4281 static int __init
iwl3945_init(void)
4285 pr_info(DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4286 pr_info(DRV_COPYRIGHT
"\n");
4288 ret
= iwl3945_rate_control_register();
4290 pr_err("Unable to register rate control algorithm: %d\n", ret
);
4294 ret
= pci_register_driver(&iwl3945_driver
);
4296 pr_err("Unable to initialize PCI module\n");
4297 goto error_register
;
4303 iwl3945_rate_control_unregister();
4307 static void __exit
iwl3945_exit(void)
4309 pci_unregister_driver(&iwl3945_driver
);
4310 iwl3945_rate_control_unregister();
4313 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX
));
4315 module_param_named(antenna
, iwl3945_mod_params
.antenna
, int, S_IRUGO
);
4316 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4317 module_param_named(swcrypto
, iwl3945_mod_params
.sw_crypto
, int, S_IRUGO
);
4318 MODULE_PARM_DESC(swcrypto
,
4319 "using software crypto (default 1 [software])\n");
4320 #ifdef CONFIG_IWLWIFI_DEBUG
4321 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4322 MODULE_PARM_DESC(debug
, "debug output mask");
4324 module_param_named(disable_hw_scan
, iwl3945_mod_params
.disable_hw_scan
,
4326 MODULE_PARM_DESC(disable_hw_scan
,
4327 "disable hardware scanning (default 0) (deprecated)");
4328 module_param_named(fw_restart3945
, iwl3945_mod_params
.restart_fw
, int, S_IRUGO
);
4329 MODULE_PARM_DESC(fw_restart3945
, "restart firmware in case of error");
4331 module_exit(iwl3945_exit
);
4332 module_init(iwl3945_init
);