1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 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/firmware.h>
44 #include <linux/etherdevice.h>
45 #include <linux/if_arp.h>
47 #include <net/ieee80211_radiotap.h>
48 #include <net/mac80211.h>
50 #include <asm/div64.h>
52 #define DRV_NAME "iwl3945"
55 #include "iwl-3945-fh.h"
56 #include "iwl-commands.h"
60 #include "iwl-helpers.h"
62 #include "iwl-spectrum.h"
65 * module name, copyright, version, etc.
68 #define DRV_DESCRIPTION \
69 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
71 #ifdef CONFIG_IWLEGACY_DEBUG
78 * add "s" to indicate spectrum measurement included.
79 * we add it here to be consistent with previous releases in which
80 * this was configurable.
82 #define DRV_VERSION IWLWIFI_VERSION VD "s"
83 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
84 #define DRV_AUTHOR "<ilw@linux.intel.com>"
86 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
87 MODULE_VERSION(DRV_VERSION
);
88 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
89 MODULE_LICENSE("GPL");
91 /* module parameters */
92 struct il_mod_params il3945_mod_params
= {
96 /* the rest are 0 by default */
100 * il3945_get_antenna_flags - Get antenna flags for RXON command
101 * @il: eeprom and antenna fields are used to determine antenna flags
103 * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed
104 * il3945_mod_params.antenna specifies the antenna diversity mode:
106 * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
107 * IL_ANTENNA_MAIN - Force MAIN antenna
108 * IL_ANTENNA_AUX - Force AUX antenna
110 __le32
il3945_get_antenna_flags(const struct il_priv
*il
)
112 struct il3945_eeprom
*eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
114 switch (il3945_mod_params
.antenna
) {
115 case IL_ANTENNA_DIVERSITY
:
118 case IL_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
;
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 IL_ERR("Bad antenna selector value (0x%x)\n",
131 il3945_mod_params
.antenna
);
133 return 0; /* "diversity" is default if error */
136 static int il3945_set_ccmp_dynamic_key_info(struct il_priv
*il
,
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
== il
->ctx
.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(&il
->sta_lock
, flags
);
155 il
->stations
[sta_id
].keyinfo
.cipher
= keyconf
->cipher
;
156 il
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
157 memcpy(il
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
160 memcpy(il
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
163 if ((il
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
164 == STA_KEY_FLG_NO_ENC
)
165 il
->stations
[sta_id
].sta
.key
.key_offset
=
166 il_get_free_ucode_key_idx(il
);
167 /* else, we are overriding an existing key => no need to allocated room
170 WARN(il
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
171 "no space for a new key");
173 il
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
174 il
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
175 il
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
177 D_INFO("hwcrypto: modify ucode station key info\n");
179 ret
= il_send_add_sta(il
,
180 &il
->stations
[sta_id
].sta
, CMD_ASYNC
);
182 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
187 static int il3945_set_tkip_dynamic_key_info(struct il_priv
*il
,
188 struct ieee80211_key_conf
*keyconf
,
194 static int il3945_set_wep_dynamic_key_info(struct il_priv
*il
,
195 struct ieee80211_key_conf
*keyconf
,
201 static int il3945_clear_sta_key_info(struct il_priv
*il
, u8 sta_id
)
204 struct il_addsta_cmd sta_cmd
;
206 spin_lock_irqsave(&il
->sta_lock
, flags
);
207 memset(&il
->stations
[sta_id
].keyinfo
, 0, sizeof(struct il_hw_key
));
208 memset(&il
->stations
[sta_id
].sta
.key
, 0,
209 sizeof(struct il4965_keyinfo
));
210 il
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
211 il
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
212 il
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
213 memcpy(&sta_cmd
, &il
->stations
[sta_id
].sta
, sizeof(struct il_addsta_cmd
));
214 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
216 D_INFO("hwcrypto: clear ucode station key info\n");
217 return il_send_add_sta(il
, &sta_cmd
, CMD_SYNC
);
220 static int il3945_set_dynamic_key(struct il_priv
*il
,
221 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
225 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
227 switch (keyconf
->cipher
) {
228 case WLAN_CIPHER_SUITE_CCMP
:
229 ret
= il3945_set_ccmp_dynamic_key_info(il
, keyconf
, sta_id
);
231 case WLAN_CIPHER_SUITE_TKIP
:
232 ret
= il3945_set_tkip_dynamic_key_info(il
, keyconf
, sta_id
);
234 case WLAN_CIPHER_SUITE_WEP40
:
235 case WLAN_CIPHER_SUITE_WEP104
:
236 ret
= il3945_set_wep_dynamic_key_info(il
, keyconf
, sta_id
);
239 IL_ERR("Unknown alg: %s alg=%x\n", __func__
,
244 D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
245 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
251 static int il3945_remove_static_key(struct il_priv
*il
)
253 int ret
= -EOPNOTSUPP
;
258 static int il3945_set_static_key(struct il_priv
*il
,
259 struct ieee80211_key_conf
*key
)
261 if (key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
262 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
)
265 IL_ERR("Static key invalid: cipher %x\n", key
->cipher
);
269 static void il3945_clear_free_frames(struct il_priv
*il
)
271 struct list_head
*element
;
273 D_INFO("%d frames on pre-allocated heap on clear.\n",
276 while (!list_empty(&il
->free_frames
)) {
277 element
= il
->free_frames
.next
;
279 kfree(list_entry(element
, struct il3945_frame
, list
));
283 if (il
->frames_count
) {
284 IL_WARN("%d frames still in use. Did we lose one?\n",
286 il
->frames_count
= 0;
290 static struct il3945_frame
*il3945_get_free_frame(struct il_priv
*il
)
292 struct il3945_frame
*frame
;
293 struct list_head
*element
;
294 if (list_empty(&il
->free_frames
)) {
295 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
297 IL_ERR("Could not allocate frame!\n");
305 element
= il
->free_frames
.next
;
307 return list_entry(element
, struct il3945_frame
, list
);
310 static void il3945_free_frame(struct il_priv
*il
, struct il3945_frame
*frame
)
312 memset(frame
, 0, sizeof(*frame
));
313 list_add(&frame
->list
, &il
->free_frames
);
316 unsigned int il3945_fill_beacon_frame(struct il_priv
*il
,
317 struct ieee80211_hdr
*hdr
,
321 if (!il_is_associated(il
) || !il
->beacon_skb
)
324 if (il
->beacon_skb
->len
> left
)
327 memcpy(hdr
, il
->beacon_skb
->data
, il
->beacon_skb
->len
);
329 return il
->beacon_skb
->len
;
332 static int il3945_send_beacon_cmd(struct il_priv
*il
)
334 struct il3945_frame
*frame
;
335 unsigned int frame_size
;
339 frame
= il3945_get_free_frame(il
);
342 IL_ERR("Could not obtain free frame buffer for beacon "
347 rate
= il_get_lowest_plcp(il
,
350 frame_size
= il3945_hw_get_beacon_cmd(il
, frame
, rate
);
352 rc
= il_send_cmd_pdu(il
, REPLY_TX_BEACON
, frame_size
,
355 il3945_free_frame(il
, frame
);
360 static void il3945_unset_hw_params(struct il_priv
*il
)
362 if (il
->_3945
.shared_virt
)
363 dma_free_coherent(&il
->pci_dev
->dev
,
364 sizeof(struct il3945_shared
),
365 il
->_3945
.shared_virt
,
366 il
->_3945
.shared_phys
);
369 static void il3945_build_tx_cmd_hwcrypto(struct il_priv
*il
,
370 struct ieee80211_tx_info
*info
,
371 struct il_device_cmd
*cmd
,
372 struct sk_buff
*skb_frag
,
375 struct il3945_tx_cmd
*tx_cmd
= (struct il3945_tx_cmd
*)cmd
->cmd
.payload
;
376 struct il_hw_key
*keyinfo
= &il
->stations
[sta_id
].keyinfo
;
380 switch (keyinfo
->cipher
) {
381 case WLAN_CIPHER_SUITE_CCMP
:
382 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
383 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
384 D_TX("tx_cmd with AES hwcrypto\n");
387 case WLAN_CIPHER_SUITE_TKIP
:
390 case WLAN_CIPHER_SUITE_WEP104
:
391 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
393 case WLAN_CIPHER_SUITE_WEP40
:
394 tx_cmd
->sec_ctl
|= TX_CMD_SEC_WEP
|
395 (info
->control
.hw_key
->hw_key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
397 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
399 D_TX("Configuring packet for WEP encryption "
400 "with key %d\n", info
->control
.hw_key
->hw_key_idx
);
404 IL_ERR("Unknown encode cipher %x\n", keyinfo
->cipher
);
410 * handle build REPLY_TX command notification.
412 static void il3945_build_tx_cmd_basic(struct il_priv
*il
,
413 struct il_device_cmd
*cmd
,
414 struct ieee80211_tx_info
*info
,
415 struct ieee80211_hdr
*hdr
, u8 std_id
)
417 struct il3945_tx_cmd
*tx_cmd
= (struct il3945_tx_cmd
*)cmd
->cmd
.payload
;
418 __le32 tx_flags
= tx_cmd
->tx_flags
;
419 __le16 fc
= hdr
->frame_control
;
421 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
422 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
423 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
424 if (ieee80211_is_mgmt(fc
))
425 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
426 if (ieee80211_is_probe_resp(fc
) &&
427 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
428 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
430 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
431 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
434 tx_cmd
->sta_id
= std_id
;
435 if (ieee80211_has_morefrags(fc
))
436 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
438 if (ieee80211_is_data_qos(fc
)) {
439 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
440 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
441 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
443 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
446 il_tx_cmd_protection(il
, info
, fc
, &tx_flags
);
448 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
449 if (ieee80211_is_mgmt(fc
)) {
450 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
451 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
453 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
455 tx_cmd
->timeout
.pm_frame_timeout
= 0;
458 tx_cmd
->driver_txop
= 0;
459 tx_cmd
->tx_flags
= tx_flags
;
460 tx_cmd
->next_frame_len
= 0;
464 * start REPLY_TX command process
466 static int il3945_tx_skb(struct il_priv
*il
, struct sk_buff
*skb
)
468 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
469 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
470 struct il3945_tx_cmd
*tx_cmd
;
471 struct il_tx_queue
*txq
= NULL
;
472 struct il_queue
*q
= NULL
;
473 struct il_device_cmd
*out_cmd
;
474 struct il_cmd_meta
*out_meta
;
475 dma_addr_t phys_addr
;
476 dma_addr_t txcmd_phys
;
477 int txq_id
= skb_get_queue_mapping(skb
);
478 u16 len
, idx
, hdr_len
;
484 u8 wait_write_ptr
= 0;
487 spin_lock_irqsave(&il
->lock
, flags
);
488 if (il_is_rfkill(il
)) {
489 D_DROP("Dropping - RF KILL\n");
493 if ((ieee80211_get_tx_rate(il
->hw
, info
)->hw_value
& 0xFF) == IL_INVALID_RATE
) {
494 IL_ERR("ERROR: No TX rate available.\n");
498 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
501 fc
= hdr
->frame_control
;
503 #ifdef CONFIG_IWLEGACY_DEBUG
504 if (ieee80211_is_auth(fc
))
505 D_TX("Sending AUTH frame\n");
506 else if (ieee80211_is_assoc_req(fc
))
507 D_TX("Sending ASSOC frame\n");
508 else if (ieee80211_is_reassoc_req(fc
))
509 D_TX("Sending REASSOC frame\n");
512 spin_unlock_irqrestore(&il
->lock
, flags
);
514 hdr_len
= ieee80211_hdrlen(fc
);
516 /* Find idx into station table for destination station */
517 sta_id
= il_sta_id_or_broadcast(
520 if (sta_id
== IL_INVALID_STATION
) {
521 D_DROP("Dropping - INVALID STATION: %pM\n",
526 D_RATE("station Id %d\n", sta_id
);
528 if (ieee80211_is_data_qos(fc
)) {
529 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
530 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
531 if (unlikely(tid
>= MAX_TID_COUNT
))
535 /* Descriptor for chosen Tx queue */
536 txq
= &il
->txq
[txq_id
];
539 if ((il_queue_space(q
) < q
->high_mark
))
542 spin_lock_irqsave(&il
->lock
, flags
);
544 idx
= il_get_cmd_idx(q
, q
->write_ptr
, 0);
546 /* Set up driver data for this TFD */
547 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct il_tx_info
));
548 txq
->txb
[q
->write_ptr
].skb
= skb
;
549 txq
->txb
[q
->write_ptr
].ctx
= &il
->ctx
;
551 /* Init first empty entry in queue's array of Tx/cmd buffers */
552 out_cmd
= txq
->cmd
[idx
];
553 out_meta
= &txq
->meta
[idx
];
554 tx_cmd
= (struct il3945_tx_cmd
*)out_cmd
->cmd
.payload
;
555 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
556 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
559 * Set up the Tx-command (not MAC!) header.
560 * Store the chosen Tx queue and TFD idx within the sequence field;
561 * after Tx, uCode's Tx response will return this value so driver can
562 * locate the frame within the tx queue and do post-tx processing.
564 out_cmd
->hdr
.cmd
= REPLY_TX
;
565 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
566 IDX_TO_SEQ(q
->write_ptr
)));
568 /* Copy MAC header from skb into command buffer */
569 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
572 if (info
->control
.hw_key
)
573 il3945_build_tx_cmd_hwcrypto(il
, info
, out_cmd
, skb
, sta_id
);
575 /* TODO need this for burst mode later on */
576 il3945_build_tx_cmd_basic(il
, out_cmd
, info
, hdr
, sta_id
);
578 /* set is_hcca to 0; it probably will never be implemented */
579 il3945_hw_build_tx_cmd_rate(il
, out_cmd
, info
, hdr
, sta_id
, 0);
581 /* Total # bytes to be transmitted */
583 tx_cmd
->len
= cpu_to_le16(len
);
585 il_dbg_log_tx_data_frame(il
, len
, hdr
);
586 il_update_stats(il
, true, fc
, len
);
587 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
588 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
590 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
591 txq
->need_update
= 1;
594 txq
->need_update
= 0;
597 D_TX("sequence nr = 0X%x\n",
598 le16_to_cpu(out_cmd
->hdr
.sequence
));
599 D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd
->tx_flags
));
600 il_print_hex_dump(il
, IL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
601 il_print_hex_dump(il
, IL_DL_TX
, (u8
*)tx_cmd
->hdr
,
602 ieee80211_hdrlen(fc
));
605 * Use the first empty entry in this queue's command buffer array
606 * to contain the Tx command and MAC header concatenated together
607 * (payload data will be in another buffer).
608 * Size of this varies, due to varying MAC header length.
609 * If end is not dword aligned, we'll have 2 extra bytes at the end
610 * of the MAC header (device reads on dword boundaries).
611 * We'll tell device about this padding later.
613 len
= sizeof(struct il3945_tx_cmd
) +
614 sizeof(struct il_cmd_header
) + hdr_len
;
615 len
= (len
+ 3) & ~3;
617 /* Physical address of this Tx command's header (not MAC header!),
618 * within command buffer array. */
619 txcmd_phys
= pci_map_single(il
->pci_dev
, &out_cmd
->hdr
,
620 len
, PCI_DMA_TODEVICE
);
621 /* we do not map meta data ... so we can safely access address to
622 * provide to unmap command*/
623 dma_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
624 dma_unmap_len_set(out_meta
, len
, len
);
626 /* Add buffer containing Tx command and MAC(!) header to TFD's
628 il
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(il
, txq
,
629 txcmd_phys
, len
, 1, 0);
632 /* Set up TFD's 2nd entry to point directly to remainder of skb,
633 * if any (802.11 null frames have no payload). */
634 len
= skb
->len
- hdr_len
;
636 phys_addr
= pci_map_single(il
->pci_dev
, skb
->data
+ hdr_len
,
637 len
, PCI_DMA_TODEVICE
);
638 il
->cfg
->ops
->lib
->txq_attach_buf_to_tfd(il
, txq
,
644 /* Tell device the write idx *just past* this latest filled TFD */
645 q
->write_ptr
= il_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
646 il_txq_update_write_ptr(il
, txq
);
647 spin_unlock_irqrestore(&il
->lock
, flags
);
649 if (il_queue_space(q
) < q
->high_mark
650 && il
->mac80211_registered
) {
651 if (wait_write_ptr
) {
652 spin_lock_irqsave(&il
->lock
, flags
);
653 txq
->need_update
= 1;
654 il_txq_update_write_ptr(il
, txq
);
655 spin_unlock_irqrestore(&il
->lock
, flags
);
658 il_stop_queue(il
, txq
);
664 spin_unlock_irqrestore(&il
->lock
, flags
);
669 static int il3945_get_measurement(struct il_priv
*il
,
670 struct ieee80211_measurement_params
*params
,
673 struct il_spectrum_cmd spectrum
;
674 struct il_rx_pkt
*pkt
;
675 struct il_host_cmd cmd
= {
676 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
677 .data
= (void *)&spectrum
,
678 .flags
= CMD_WANT_SKB
,
680 u32 add_time
= le64_to_cpu(params
->start_time
);
682 int spectrum_resp_status
;
683 int duration
= le16_to_cpu(params
->duration
);
684 struct il_rxon_context
*ctx
= &il
->ctx
;
686 if (il_is_associated(il
))
687 add_time
= il_usecs_to_beacons(il
,
688 le64_to_cpu(params
->start_time
) - il
->_3945
.last_tsf
,
689 le16_to_cpu(ctx
->timing
.beacon_interval
));
691 memset(&spectrum
, 0, sizeof(spectrum
));
693 spectrum
.channel_count
= cpu_to_le16(1);
695 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
696 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
697 cmd
.len
= sizeof(spectrum
);
698 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
700 if (il_is_associated(il
))
701 spectrum
.start_time
=
702 il_add_beacon_time(il
,
703 il
->_3945
.last_beacon_time
, add_time
,
704 le16_to_cpu(ctx
->timing
.beacon_interval
));
706 spectrum
.start_time
= 0;
708 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
709 spectrum
.channels
[0].channel
= params
->channel
;
710 spectrum
.channels
[0].type
= type
;
711 if (ctx
->active
.flags
& RXON_FLG_BAND_24G_MSK
)
712 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
713 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
715 rc
= il_send_cmd_sync(il
, &cmd
);
719 pkt
= (struct il_rx_pkt
*)cmd
.reply_page
;
720 if (pkt
->hdr
.flags
& IL_CMD_FAILED_MSK
) {
721 IL_ERR("Bad return from REPLY_RX_ON_ASSOC command\n");
725 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
726 switch (spectrum_resp_status
) {
727 case 0: /* Command will be handled */
728 if (pkt
->u
.spectrum
.id
!= 0xff) {
729 D_INFO("Replaced existing measurement: %d\n",
731 il
->measurement_status
&= ~MEASUREMENT_READY
;
733 il
->measurement_status
|= MEASUREMENT_ACTIVE
;
737 case 1: /* Command will not be handled */
742 il_free_pages(il
, cmd
.reply_page
);
747 static void il3945_rx_reply_alive(struct il_priv
*il
,
748 struct il_rx_buf
*rxb
)
750 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
751 struct il_alive_resp
*palive
;
752 struct delayed_work
*pwork
;
754 palive
= &pkt
->u
.alive_frame
;
756 D_INFO("Alive ucode status 0x%08X revision "
758 palive
->is_valid
, palive
->ver_type
,
759 palive
->ver_subtype
);
761 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
762 D_INFO("Initialization Alive received.\n");
763 memcpy(&il
->card_alive_init
, &pkt
->u
.alive_frame
,
764 sizeof(struct il_alive_resp
));
765 pwork
= &il
->init_alive_start
;
767 D_INFO("Runtime Alive received.\n");
768 memcpy(&il
->card_alive
, &pkt
->u
.alive_frame
,
769 sizeof(struct il_alive_resp
));
770 pwork
= &il
->alive_start
;
771 il3945_disable_events(il
);
774 /* We delay the ALIVE response by 5ms to
775 * give the HW RF Kill time to activate... */
776 if (palive
->is_valid
== UCODE_VALID_OK
)
777 queue_delayed_work(il
->workqueue
, pwork
,
778 msecs_to_jiffies(5));
780 IL_WARN("uCode did not respond OK.\n");
783 static void il3945_rx_reply_add_sta(struct il_priv
*il
,
784 struct il_rx_buf
*rxb
)
786 #ifdef CONFIG_IWLEGACY_DEBUG
787 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
790 D_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
793 static void il3945_rx_beacon_notif(struct il_priv
*il
,
794 struct il_rx_buf
*rxb
)
796 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
797 struct il3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
798 #ifdef CONFIG_IWLEGACY_DEBUG
799 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
801 D_RX("beacon status %x retries %d iss %d "
802 "tsf %d %d rate %d\n",
803 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
804 beacon
->beacon_notify_hdr
.failure_frame
,
805 le32_to_cpu(beacon
->ibss_mgr_status
),
806 le32_to_cpu(beacon
->high_tsf
),
807 le32_to_cpu(beacon
->low_tsf
), rate
);
810 il
->ibss_manager
= le32_to_cpu(beacon
->ibss_mgr_status
);
814 /* Handle notification from uCode that card's power state is changing
815 * due to software, hardware, or critical temperature RFKILL */
816 static void il3945_rx_card_state_notif(struct il_priv
*il
,
817 struct il_rx_buf
*rxb
)
819 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
820 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
821 unsigned long status
= il
->status
;
823 IL_WARN("Card state received: HW:%s SW:%s\n",
824 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
825 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
827 _il_wr(il
, CSR_UCODE_DRV_GP1_SET
,
828 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
830 if (flags
& HW_CARD_DISABLED
)
831 set_bit(STATUS_RF_KILL_HW
, &il
->status
);
833 clear_bit(STATUS_RF_KILL_HW
, &il
->status
);
838 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
839 test_bit(STATUS_RF_KILL_HW
, &il
->status
)))
840 wiphy_rfkill_set_hw_state(il
->hw
->wiphy
,
841 test_bit(STATUS_RF_KILL_HW
, &il
->status
));
843 wake_up(&il
->wait_command_queue
);
847 * il3945_setup_rx_handlers - Initialize Rx handler callbacks
849 * Setup the RX handlers for each of the reply types sent from the uCode
852 * This function chains into the hardware specific files for them to setup
853 * any hardware specific handlers as well.
855 static void il3945_setup_rx_handlers(struct il_priv
*il
)
857 il
->rx_handlers
[REPLY_ALIVE
] = il3945_rx_reply_alive
;
858 il
->rx_handlers
[REPLY_ADD_STA
] = il3945_rx_reply_add_sta
;
859 il
->rx_handlers
[REPLY_ERROR
] = il_rx_reply_error
;
860 il
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = il_rx_csa
;
861 il
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
862 il_rx_spectrum_measure_notif
;
863 il
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = il_rx_pm_sleep_notif
;
864 il
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
865 il_rx_pm_debug_stats_notif
;
866 il
->rx_handlers
[BEACON_NOTIFICATION
] = il3945_rx_beacon_notif
;
869 * The same handler is used for both the REPLY to a discrete
870 * stats request from the host as well as for the periodic
871 * stats notifications (after received beacons) from the uCode.
873 il
->rx_handlers
[REPLY_STATISTICS_CMD
] = il3945_reply_stats
;
874 il
->rx_handlers
[STATISTICS_NOTIFICATION
] = il3945_hw_rx_stats
;
876 il_setup_rx_scan_handlers(il
);
877 il
->rx_handlers
[CARD_STATE_NOTIFICATION
] = il3945_rx_card_state_notif
;
879 /* Set up hardware specific Rx handlers */
880 il3945_hw_rx_handler_setup(il
);
883 /************************** RX-FUNCTIONS ****************************/
885 * Rx theory of operation
887 * The host allocates 32 DMA target addresses and passes the host address
888 * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is
892 * The host/firmware share two idx registers for managing the Rx buffers.
894 * The READ idx maps to the first position that the firmware may be writing
895 * to -- the driver can read up to (but not including) this position and get
897 * The READ idx is managed by the firmware once the card is enabled.
899 * The WRITE idx maps to the last position the driver has read from -- the
900 * position preceding WRITE is the last slot the firmware can place a packet.
902 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
905 * During initialization, the host sets up the READ queue position to the first
906 * IDX position, and WRITE to the last (READ - 1 wrapped)
908 * When the firmware places a packet in a buffer, it will advance the READ idx
909 * and fire the RX interrupt. The driver can then query the READ idx and
910 * process as many packets as possible, moving the WRITE idx forward as it
911 * resets the Rx queue buffers with new memory.
913 * The management in the driver is as follows:
914 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
915 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
916 * to replenish the iwl->rxq->rx_free.
917 * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the
918 * iwl->rxq is replenished and the READ IDX is updated (updating the
919 * 'processed' and 'read' driver idxes as well)
920 * + A received packet is processed and handed to the kernel network stack,
921 * detached from the iwl->rxq. The driver 'processed' idx is updated.
922 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
923 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
924 * IDX is not incremented and iwl->status(RX_STALLED) is set. If there
925 * were enough free buffers and RX_STALLED is set it is cleared.
930 * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
931 * il3945_rx_queue_restock
932 * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx
933 * queue, updates firmware pointers, and updates
934 * the WRITE idx. If insufficient rx_free buffers
935 * are available, schedules il3945_rx_replenish
937 * -- enable interrupts --
938 * ISR - il3945_rx() Detach il_rx_bufs from pool up to the
939 * READ IDX, detaching the SKB from the pool.
940 * Moves the packet buffer from queue to rx_used.
941 * Calls il3945_rx_queue_restock to refill any empty
948 * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
950 static inline __le32
il3945_dma_addr2rbd_ptr(struct il_priv
*il
,
953 return cpu_to_le32((u32
)dma_addr
);
957 * il3945_rx_queue_restock - refill RX queue from pre-allocated pool
959 * If there are slots in the RX queue that need to be restocked,
960 * and we have free pre-allocated buffers, fill the ranks as much
961 * as we can, pulling from rx_free.
963 * This moves the 'write' idx forward to catch up with 'processed', and
964 * also updates the memory address in the firmware to reference the new
967 static void il3945_rx_queue_restock(struct il_priv
*il
)
969 struct il_rx_queue
*rxq
= &il
->rxq
;
970 struct list_head
*element
;
971 struct il_rx_buf
*rxb
;
975 spin_lock_irqsave(&rxq
->lock
, flags
);
976 write
= rxq
->write
& ~0x7;
977 while (il_rx_queue_space(rxq
) > 0 && rxq
->free_count
) {
978 /* Get next free Rx buffer, remove from free list */
979 element
= rxq
->rx_free
.next
;
980 rxb
= list_entry(element
, struct il_rx_buf
, list
);
983 /* Point to Rx buffer via next RBD in circular buffer */
984 rxq
->bd
[rxq
->write
] = il3945_dma_addr2rbd_ptr(il
, rxb
->page_dma
);
985 rxq
->queue
[rxq
->write
] = rxb
;
986 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
989 spin_unlock_irqrestore(&rxq
->lock
, flags
);
990 /* If the pre-allocated buffer pool is dropping low, schedule to
992 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
993 queue_work(il
->workqueue
, &il
->rx_replenish
);
996 /* If we've added more space for the firmware to place data, tell it.
997 * Increment device's write pointer in multiples of 8. */
998 if (rxq
->write_actual
!= (rxq
->write
& ~0x7) ||
999 abs(rxq
->write
- rxq
->read
) > 7) {
1000 spin_lock_irqsave(&rxq
->lock
, flags
);
1001 rxq
->need_update
= 1;
1002 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1003 il_rx_queue_update_write_ptr(il
, rxq
);
1008 * il3945_rx_replenish - Move all used packet from rx_used to rx_free
1010 * When moving to rx_free an SKB is allocated for the slot.
1012 * Also restock the Rx queue via il3945_rx_queue_restock.
1013 * This is called as a scheduled work item (except for during initialization)
1015 static void il3945_rx_allocate(struct il_priv
*il
, gfp_t priority
)
1017 struct il_rx_queue
*rxq
= &il
->rxq
;
1018 struct list_head
*element
;
1019 struct il_rx_buf
*rxb
;
1021 unsigned long flags
;
1022 gfp_t gfp_mask
= priority
;
1025 spin_lock_irqsave(&rxq
->lock
, flags
);
1027 if (list_empty(&rxq
->rx_used
)) {
1028 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1031 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1033 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1034 gfp_mask
|= __GFP_NOWARN
;
1036 if (il
->hw_params
.rx_page_order
> 0)
1037 gfp_mask
|= __GFP_COMP
;
1039 /* Alloc a new receive buffer */
1040 page
= alloc_pages(gfp_mask
, il
->hw_params
.rx_page_order
);
1042 if (net_ratelimit())
1043 D_INFO("Failed to allocate SKB buffer.\n");
1044 if (rxq
->free_count
<= RX_LOW_WATERMARK
&&
1046 IL_ERR("Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1047 priority
== GFP_ATOMIC
? "GFP_ATOMIC" : "GFP_KERNEL",
1049 /* We don't reschedule replenish work here -- we will
1050 * call the restock method and if it still needs
1051 * more buffers it will schedule replenish */
1055 spin_lock_irqsave(&rxq
->lock
, flags
);
1056 if (list_empty(&rxq
->rx_used
)) {
1057 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1058 __free_pages(page
, il
->hw_params
.rx_page_order
);
1061 element
= rxq
->rx_used
.next
;
1062 rxb
= list_entry(element
, struct il_rx_buf
, list
);
1064 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1067 /* Get physical address of RB/SKB */
1068 rxb
->page_dma
= pci_map_page(il
->pci_dev
, page
, 0,
1069 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1070 PCI_DMA_FROMDEVICE
);
1072 spin_lock_irqsave(&rxq
->lock
, flags
);
1074 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1076 il
->alloc_rxb_page
++;
1078 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1082 void il3945_rx_queue_reset(struct il_priv
*il
, struct il_rx_queue
*rxq
)
1084 unsigned long flags
;
1086 spin_lock_irqsave(&rxq
->lock
, flags
);
1087 INIT_LIST_HEAD(&rxq
->rx_free
);
1088 INIT_LIST_HEAD(&rxq
->rx_used
);
1089 /* Fill the rx_used queue with _all_ of the Rx buffers */
1090 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1091 /* In the reset function, these buffers may have been allocated
1092 * to an SKB, so we need to unmap and free potential storage */
1093 if (rxq
->pool
[i
].page
!= NULL
) {
1094 pci_unmap_page(il
->pci_dev
, rxq
->pool
[i
].page_dma
,
1095 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1096 PCI_DMA_FROMDEVICE
);
1097 __il_free_pages(il
, rxq
->pool
[i
].page
);
1098 rxq
->pool
[i
].page
= NULL
;
1100 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1103 /* Set us so that we have processed and used all buffers, but have
1104 * not restocked the Rx queue with fresh buffers */
1105 rxq
->read
= rxq
->write
= 0;
1106 rxq
->write_actual
= 0;
1107 rxq
->free_count
= 0;
1108 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1111 void il3945_rx_replenish(void *data
)
1113 struct il_priv
*il
= data
;
1114 unsigned long flags
;
1116 il3945_rx_allocate(il
, GFP_KERNEL
);
1118 spin_lock_irqsave(&il
->lock
, flags
);
1119 il3945_rx_queue_restock(il
);
1120 spin_unlock_irqrestore(&il
->lock
, flags
);
1123 static void il3945_rx_replenish_now(struct il_priv
*il
)
1125 il3945_rx_allocate(il
, GFP_ATOMIC
);
1127 il3945_rx_queue_restock(il
);
1131 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1132 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1133 * This free routine walks the list of POOL entries and if SKB is set to
1134 * non NULL it is unmapped and freed
1136 static void il3945_rx_queue_free(struct il_priv
*il
, struct il_rx_queue
*rxq
)
1139 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1140 if (rxq
->pool
[i
].page
!= NULL
) {
1141 pci_unmap_page(il
->pci_dev
, rxq
->pool
[i
].page_dma
,
1142 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1143 PCI_DMA_FROMDEVICE
);
1144 __il_free_pages(il
, rxq
->pool
[i
].page
);
1145 rxq
->pool
[i
].page
= NULL
;
1149 dma_free_coherent(&il
->pci_dev
->dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1151 dma_free_coherent(&il
->pci_dev
->dev
, sizeof(struct il_rb_status
),
1152 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1154 rxq
->rb_stts
= NULL
;
1158 /* Convert linear signal-to-noise ratio into dB */
1159 static u8 ratio2dB
[100] = {
1160 /* 0 1 2 3 4 5 6 7 8 9 */
1161 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1162 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1163 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1164 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1165 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1166 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1167 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1168 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1169 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1170 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1173 /* Calculates a relative dB value from a ratio of linear
1174 * (i.e. not dB) signal levels.
1175 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1176 int il3945_calc_db_from_ratio(int sig_ratio
)
1178 /* 1000:1 or higher just report as 60 dB */
1179 if (sig_ratio
>= 1000)
1182 /* 100:1 or higher, divide by 10 and use table,
1183 * add 20 dB to make up for divide by 10 */
1184 if (sig_ratio
>= 100)
1185 return 20 + (int)ratio2dB
[sig_ratio
/10];
1187 /* We shouldn't see this */
1191 /* Use table for ratios 1:1 - 99:1 */
1192 return (int)ratio2dB
[sig_ratio
];
1196 * il3945_rx_handle - Main entry function for receiving responses from uCode
1198 * Uses the il->rx_handlers callback function array to invoke
1199 * the appropriate handlers, including command responses,
1200 * frame-received notifications, and other notifications.
1202 static void il3945_rx_handle(struct il_priv
*il
)
1204 struct il_rx_buf
*rxb
;
1205 struct il_rx_pkt
*pkt
;
1206 struct il_rx_queue
*rxq
= &il
->rxq
;
1209 unsigned long flags
;
1212 int total_empty
= 0;
1214 /* uCode's read idx (stored in shared DRAM) indicates the last Rx
1215 * buffer that the driver may process (last buffer filled by ucode). */
1216 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1219 /* calculate total frames need to be restock after handling RX */
1220 total_empty
= r
- rxq
->write_actual
;
1221 if (total_empty
< 0)
1222 total_empty
+= RX_QUEUE_SIZE
;
1224 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1226 /* Rx interrupt, but nothing sent from uCode */
1228 D_RX("r = %d, i = %d\n", r
, i
);
1233 rxb
= rxq
->queue
[i
];
1235 /* If an RXB doesn't have a Rx queue slot associated with it,
1236 * then a bug has been introduced in the queue refilling
1237 * routines -- catch it here */
1238 BUG_ON(rxb
== NULL
);
1240 rxq
->queue
[i
] = NULL
;
1242 pci_unmap_page(il
->pci_dev
, rxb
->page_dma
,
1243 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1244 PCI_DMA_FROMDEVICE
);
1245 pkt
= rxb_addr(rxb
);
1247 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
1248 len
+= sizeof(u32
); /* account for status word */
1250 /* Reclaim a command buffer only if this packet is a response
1251 * to a (driver-originated) command.
1252 * If the packet (e.g. Rx frame) originated from uCode,
1253 * there is no command buffer to reclaim.
1254 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1255 * but apparently a few don't get set; catch them here. */
1256 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1257 pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
&&
1258 pkt
->hdr
.cmd
!= REPLY_TX
;
1260 /* Based on type of command response or notification,
1261 * handle those that need handling via function in
1262 * rx_handlers table. See il3945_setup_rx_handlers() */
1263 if (il
->rx_handlers
[pkt
->hdr
.cmd
]) {
1264 D_RX("r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1265 il_get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1266 il
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
1267 il
->rx_handlers
[pkt
->hdr
.cmd
] (il
, rxb
);
1269 /* No handling needed */
1271 "r %d i %d No handler needed for %s, 0x%02x\n",
1272 r
, i
, il_get_cmd_string(pkt
->hdr
.cmd
),
1277 * XXX: After here, we should always check rxb->page
1278 * against NULL before touching it or its virtual
1279 * memory (pkt). Because some rx_handler might have
1280 * already taken or freed the pages.
1284 /* Invoke any callbacks, transfer the buffer to caller,
1285 * and fire off the (possibly) blocking il_send_cmd()
1286 * as we reclaim the driver command queue */
1288 il_tx_cmd_complete(il
, rxb
);
1290 IL_WARN("Claim null rxb?\n");
1293 /* Reuse the page if possible. For notification packets and
1294 * SKBs that fail to Rx correctly, add them back into the
1295 * rx_free list for reuse later. */
1296 spin_lock_irqsave(&rxq
->lock
, flags
);
1297 if (rxb
->page
!= NULL
) {
1298 rxb
->page_dma
= pci_map_page(il
->pci_dev
, rxb
->page
,
1299 0, PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1300 PCI_DMA_FROMDEVICE
);
1301 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1304 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1306 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1308 i
= (i
+ 1) & RX_QUEUE_MASK
;
1309 /* If there are a lot of unused frames,
1310 * restock the Rx queue so ucode won't assert. */
1315 il3945_rx_replenish_now(il
);
1321 /* Backtrack one entry */
1324 il3945_rx_replenish_now(il
);
1326 il3945_rx_queue_restock(il
);
1329 /* call this function to flush any scheduled tasklet */
1330 static inline void il3945_synchronize_irq(struct il_priv
*il
)
1332 /* wait to make sure we flush pending tasklet*/
1333 synchronize_irq(il
->pci_dev
->irq
);
1334 tasklet_kill(&il
->irq_tasklet
);
1337 static const char *il3945_desc_lookup(int i
)
1345 return "BAD_CHECKSUM";
1347 return "NMI_INTERRUPT";
1351 return "FATAL_ERROR";
1357 #define ERROR_START_OFFSET (1 * sizeof(u32))
1358 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1360 void il3945_dump_nic_error_log(struct il_priv
*il
)
1363 u32 desc
, time
, count
, base
, data1
;
1364 u32 blink1
, blink2
, ilink1
, ilink2
;
1366 base
= le32_to_cpu(il
->card_alive
.error_event_table_ptr
);
1368 if (!il3945_hw_valid_rtc_data_addr(base
)) {
1369 IL_ERR("Not valid error log pointer 0x%08X\n", base
);
1374 count
= il_read_targ_mem(il
, base
);
1376 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1377 IL_ERR("Start IWL Error Log Dump:\n");
1378 IL_ERR("Status: 0x%08lX, count: %d\n",
1382 IL_ERR("Desc Time asrtPC blink2 "
1383 "ilink1 nmiPC Line\n");
1384 for (i
= ERROR_START_OFFSET
;
1385 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1386 i
+= ERROR_ELEM_SIZE
) {
1387 desc
= il_read_targ_mem(il
, base
+ i
);
1389 il_read_targ_mem(il
, base
+ i
+ 1 * sizeof(u32
));
1391 il_read_targ_mem(il
, base
+ i
+ 2 * sizeof(u32
));
1393 il_read_targ_mem(il
, base
+ i
+ 3 * sizeof(u32
));
1395 il_read_targ_mem(il
, base
+ i
+ 4 * sizeof(u32
));
1397 il_read_targ_mem(il
, base
+ i
+ 5 * sizeof(u32
));
1399 il_read_targ_mem(il
, base
+ i
+ 6 * sizeof(u32
));
1402 "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1403 il3945_desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1404 ilink1
, ilink2
, data1
);
1408 static void il3945_irq_tasklet(struct il_priv
*il
)
1410 u32 inta
, handled
= 0;
1412 unsigned long flags
;
1413 #ifdef CONFIG_IWLEGACY_DEBUG
1417 spin_lock_irqsave(&il
->lock
, flags
);
1419 /* Ack/clear/reset pending uCode interrupts.
1420 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1421 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1422 inta
= _il_rd(il
, CSR_INT
);
1423 _il_wr(il
, CSR_INT
, inta
);
1425 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1426 * Any new interrupts that happen after this, either while we're
1427 * in this tasklet, or later, will show up in next ISR/tasklet. */
1428 inta_fh
= _il_rd(il
, CSR_FH_INT_STATUS
);
1429 _il_wr(il
, CSR_FH_INT_STATUS
, inta_fh
);
1431 #ifdef CONFIG_IWLEGACY_DEBUG
1432 if (il_get_debug_level(il
) & IL_DL_ISR
) {
1433 /* just for debug */
1434 inta_mask
= _il_rd(il
, CSR_INT_MASK
);
1435 D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1436 inta
, inta_mask
, inta_fh
);
1440 spin_unlock_irqrestore(&il
->lock
, flags
);
1442 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1443 * atomic, make sure that inta covers all the interrupts that
1444 * we've discovered, even if FH interrupt came in just after
1445 * reading CSR_INT. */
1446 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1447 inta
|= CSR_INT_BIT_FH_RX
;
1448 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1449 inta
|= CSR_INT_BIT_FH_TX
;
1451 /* Now service all interrupt bits discovered above. */
1452 if (inta
& CSR_INT_BIT_HW_ERR
) {
1453 IL_ERR("Hardware error detected. Restarting.\n");
1455 /* Tell the device to stop sending interrupts */
1456 il_disable_interrupts(il
);
1459 il_irq_handle_error(il
);
1461 handled
|= CSR_INT_BIT_HW_ERR
;
1466 #ifdef CONFIG_IWLEGACY_DEBUG
1467 if (il_get_debug_level(il
) & (IL_DL_ISR
)) {
1468 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1469 if (inta
& CSR_INT_BIT_SCD
) {
1470 D_ISR("Scheduler finished to transmit "
1471 "the frame/frames.\n");
1472 il
->isr_stats
.sch
++;
1475 /* Alive notification via Rx interrupt will do the real work */
1476 if (inta
& CSR_INT_BIT_ALIVE
) {
1477 D_ISR("Alive interrupt\n");
1478 il
->isr_stats
.alive
++;
1482 /* Safely ignore these bits for debug checks below */
1483 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1485 /* Error detected by uCode */
1486 if (inta
& CSR_INT_BIT_SW_ERR
) {
1487 IL_ERR("Microcode SW error detected. "
1488 "Restarting 0x%X.\n", inta
);
1490 il_irq_handle_error(il
);
1491 handled
|= CSR_INT_BIT_SW_ERR
;
1494 /* uCode wakes up after power-down sleep */
1495 if (inta
& CSR_INT_BIT_WAKEUP
) {
1496 D_ISR("Wakeup interrupt\n");
1497 il_rx_queue_update_write_ptr(il
, &il
->rxq
);
1498 il_txq_update_write_ptr(il
, &il
->txq
[0]);
1499 il_txq_update_write_ptr(il
, &il
->txq
[1]);
1500 il_txq_update_write_ptr(il
, &il
->txq
[2]);
1501 il_txq_update_write_ptr(il
, &il
->txq
[3]);
1502 il_txq_update_write_ptr(il
, &il
->txq
[4]);
1503 il_txq_update_write_ptr(il
, &il
->txq
[5]);
1505 il
->isr_stats
.wakeup
++;
1506 handled
|= CSR_INT_BIT_WAKEUP
;
1509 /* All uCode command responses, including Tx command responses,
1510 * Rx "responses" (frame-received notification), and other
1511 * notifications from uCode come through here*/
1512 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1513 il3945_rx_handle(il
);
1515 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1518 if (inta
& CSR_INT_BIT_FH_TX
) {
1519 D_ISR("Tx interrupt\n");
1522 _il_wr(il
, CSR_FH_INT_STATUS
, (1 << 6));
1523 il_wr(il
, FH39_TCSR_CREDIT
1524 (FH39_SRVC_CHNL
), 0x0);
1525 handled
|= CSR_INT_BIT_FH_TX
;
1528 if (inta
& ~handled
) {
1529 IL_ERR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1530 il
->isr_stats
.unhandled
++;
1533 if (inta
& ~il
->inta_mask
) {
1534 IL_WARN("Disabled INTA bits 0x%08x were pending\n",
1535 inta
& ~il
->inta_mask
);
1536 IL_WARN(" with FH_INT = 0x%08x\n", inta_fh
);
1539 /* Re-enable all interrupts */
1540 /* only Re-enable if disabled by irq */
1541 if (test_bit(STATUS_INT_ENABLED
, &il
->status
))
1542 il_enable_interrupts(il
);
1544 #ifdef CONFIG_IWLEGACY_DEBUG
1545 if (il_get_debug_level(il
) & (IL_DL_ISR
)) {
1546 inta
= _il_rd(il
, CSR_INT
);
1547 inta_mask
= _il_rd(il
, CSR_INT_MASK
);
1548 inta_fh
= _il_rd(il
, CSR_FH_INT_STATUS
);
1549 D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1550 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1555 static int il3945_get_channels_for_scan(struct il_priv
*il
,
1556 enum ieee80211_band band
,
1557 u8 is_active
, u8 n_probes
,
1558 struct il3945_scan_channel
*scan_ch
,
1559 struct ieee80211_vif
*vif
)
1561 struct ieee80211_channel
*chan
;
1562 const struct ieee80211_supported_band
*sband
;
1563 const struct il_channel_info
*ch_info
;
1564 u16 passive_dwell
= 0;
1565 u16 active_dwell
= 0;
1568 sband
= il_get_hw_mode(il
, band
);
1572 active_dwell
= il_get_active_dwell_time(il
, band
, n_probes
);
1573 passive_dwell
= il_get_passive_dwell_time(il
, band
, vif
);
1575 if (passive_dwell
<= active_dwell
)
1576 passive_dwell
= active_dwell
+ 1;
1578 for (i
= 0, added
= 0; i
< il
->scan_request
->n_channels
; i
++) {
1579 chan
= il
->scan_request
->channels
[i
];
1581 if (chan
->band
!= band
)
1584 scan_ch
->channel
= chan
->hw_value
;
1586 ch_info
= il_get_channel_info(il
, band
,
1588 if (!il_is_channel_valid(ch_info
)) {
1590 "Channel %d is INVALID for this band.\n",
1595 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1596 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1597 /* If passive , set up for auto-switch
1598 * and use long active_dwell time.
1600 if (!is_active
|| il_is_channel_passive(ch_info
) ||
1601 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1602 scan_ch
->type
= 0; /* passive */
1603 if (IL_UCODE_API(il
->ucode_ver
) == 1)
1604 scan_ch
->active_dwell
= cpu_to_le16(passive_dwell
- 1);
1606 scan_ch
->type
= 1; /* active */
1609 /* Set direct probe bits. These may be used both for active
1610 * scan channels (probes gets sent right away),
1611 * or for passive channels (probes get se sent only after
1612 * hearing clear Rx packet).*/
1613 if (IL_UCODE_API(il
->ucode_ver
) >= 2) {
1615 scan_ch
->type
|= IL39_SCAN_PROBE_MASK(n_probes
);
1617 /* uCode v1 does not allow setting direct probe bits on
1618 * passive channel. */
1619 if ((scan_ch
->type
& 1) && n_probes
)
1620 scan_ch
->type
|= IL39_SCAN_PROBE_MASK(n_probes
);
1623 /* Set txpower levels to defaults */
1624 scan_ch
->tpc
.dsp_atten
= 110;
1625 /* scan_pwr_info->tpc.dsp_atten; */
1627 /*scan_pwr_info->tpc.tx_gain; */
1628 if (band
== IEEE80211_BAND_5GHZ
)
1629 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1631 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1632 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1634 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1638 D_SCAN("Scanning %d [%s %d]\n",
1640 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1641 (scan_ch
->type
& 1) ?
1642 active_dwell
: passive_dwell
);
1648 D_SCAN("total channels to scan %d\n", added
);
1652 static void il3945_init_hw_rates(struct il_priv
*il
,
1653 struct ieee80211_rate
*rates
)
1657 for (i
= 0; i
< RATE_COUNT_LEGACY
; i
++) {
1658 rates
[i
].bitrate
= il3945_rates
[i
].ieee
* 5;
1659 rates
[i
].hw_value
= i
; /* Rate scaling will work on idxes */
1660 rates
[i
].hw_value_short
= i
;
1662 if (i
> IL39_LAST_OFDM_RATE
|| i
< IL_FIRST_OFDM_RATE
) {
1664 * If CCK != 1M then set short preamble rate flag.
1666 rates
[i
].flags
|= (il3945_rates
[i
].plcp
== 10) ?
1667 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1672 /******************************************************************************
1674 * uCode download functions
1676 ******************************************************************************/
1678 static void il3945_dealloc_ucode_pci(struct il_priv
*il
)
1680 il_free_fw_desc(il
->pci_dev
, &il
->ucode_code
);
1681 il_free_fw_desc(il
->pci_dev
, &il
->ucode_data
);
1682 il_free_fw_desc(il
->pci_dev
, &il
->ucode_data_backup
);
1683 il_free_fw_desc(il
->pci_dev
, &il
->ucode_init
);
1684 il_free_fw_desc(il
->pci_dev
, &il
->ucode_init_data
);
1685 il_free_fw_desc(il
->pci_dev
, &il
->ucode_boot
);
1689 * il3945_verify_inst_full - verify runtime uCode image in card vs. host,
1690 * looking at all data.
1692 static int il3945_verify_inst_full(struct il_priv
*il
, __le32
*image
, u32 len
)
1699 D_INFO("ucode inst image size is %u\n", len
);
1701 il_wr(il
, HBUS_TARG_MEM_RADDR
,
1702 IL39_RTC_INST_LOWER_BOUND
);
1705 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1706 /* read data comes through single port, auto-incr addr */
1707 /* NOTE: Use the debugless read so we don't flood kernel log
1708 * if IL_DL_IO is set */
1709 val
= _il_rd(il
, HBUS_TARG_MEM_RDAT
);
1710 if (val
!= le32_to_cpu(*image
)) {
1711 IL_ERR("uCode INST section is invalid at "
1712 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1713 save_len
- len
, val
, le32_to_cpu(*image
));
1724 "ucode image in INSTRUCTION memory is good\n");
1731 * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1732 * using sample data 100 bytes apart. If these sample points are good,
1733 * it's a pretty good bet that everything between them is good, too.
1735 static int il3945_verify_inst_sparse(struct il_priv
*il
, __le32
*image
, u32 len
)
1742 D_INFO("ucode inst image size is %u\n", len
);
1744 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
1745 /* read data comes through single port, auto-incr addr */
1746 /* NOTE: Use the debugless read so we don't flood kernel log
1747 * if IL_DL_IO is set */
1748 il_wr(il
, HBUS_TARG_MEM_RADDR
,
1749 i
+ IL39_RTC_INST_LOWER_BOUND
);
1750 val
= _il_rd(il
, HBUS_TARG_MEM_RDAT
);
1751 if (val
!= le32_to_cpu(*image
)) {
1752 #if 0 /* Enable this if you want to see details */
1753 IL_ERR("uCode INST section is invalid at "
1754 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1769 * il3945_verify_ucode - determine which instruction image is in SRAM,
1770 * and verify its contents
1772 static int il3945_verify_ucode(struct il_priv
*il
)
1779 image
= (__le32
*)il
->ucode_boot
.v_addr
;
1780 len
= il
->ucode_boot
.len
;
1781 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1783 D_INFO("Bootstrap uCode is good in inst SRAM\n");
1787 /* Try initialize */
1788 image
= (__le32
*)il
->ucode_init
.v_addr
;
1789 len
= il
->ucode_init
.len
;
1790 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1792 D_INFO("Initialize uCode is good in inst SRAM\n");
1796 /* Try runtime/protocol */
1797 image
= (__le32
*)il
->ucode_code
.v_addr
;
1798 len
= il
->ucode_code
.len
;
1799 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1801 D_INFO("Runtime uCode is good in inst SRAM\n");
1805 IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1807 /* Since nothing seems to match, show first several data entries in
1808 * instruction SRAM, so maybe visual inspection will give a clue.
1809 * Selection of bootstrap image (vs. other images) is arbitrary. */
1810 image
= (__le32
*)il
->ucode_boot
.v_addr
;
1811 len
= il
->ucode_boot
.len
;
1812 rc
= il3945_verify_inst_full(il
, image
, len
);
1817 static void il3945_nic_start(struct il_priv
*il
)
1819 /* Remove all resets to allow NIC to operate */
1820 _il_wr(il
, CSR_RESET
, 0);
1823 #define IL3945_UCODE_GET(item) \
1824 static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\
1826 return le32_to_cpu(ucode->v1.item); \
1829 static u32
il3945_ucode_get_header_size(u32 api_ver
)
1834 static u8
*il3945_ucode_get_data(const struct il_ucode_header
*ucode
)
1836 return (u8
*) ucode
->v1
.data
;
1839 IL3945_UCODE_GET(inst_size
);
1840 IL3945_UCODE_GET(data_size
);
1841 IL3945_UCODE_GET(init_size
);
1842 IL3945_UCODE_GET(init_data_size
);
1843 IL3945_UCODE_GET(boot_size
);
1846 * il3945_read_ucode - Read uCode images from disk file.
1848 * Copy into buffers for card to fetch via bus-mastering
1850 static int il3945_read_ucode(struct il_priv
*il
)
1852 const struct il_ucode_header
*ucode
;
1853 int ret
= -EINVAL
, idx
;
1854 const struct firmware
*ucode_raw
;
1855 /* firmware file name contains uCode/driver compatibility version */
1856 const char *name_pre
= il
->cfg
->fw_name_pre
;
1857 const unsigned int api_max
= il
->cfg
->ucode_api_max
;
1858 const unsigned int api_min
= il
->cfg
->ucode_api_min
;
1862 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1864 /* Ask kernel firmware_class module to get the boot firmware off disk.
1865 * request_firmware() is synchronous, file is in memory on return. */
1866 for (idx
= api_max
; idx
>= api_min
; idx
--) {
1867 sprintf(buf
, "%s%u%s", name_pre
, idx
, ".ucode");
1868 ret
= request_firmware(&ucode_raw
, buf
, &il
->pci_dev
->dev
);
1870 IL_ERR("%s firmware file req failed: %d\n",
1878 IL_ERR("Loaded firmware %s, "
1879 "which is deprecated. "
1880 " Please use API v%u instead.\n",
1882 D_INFO("Got firmware '%s' file "
1883 "(%zd bytes) from disk\n",
1884 buf
, ucode_raw
->size
);
1892 /* Make sure that we got at least our header! */
1893 if (ucode_raw
->size
< il3945_ucode_get_header_size(1)) {
1894 IL_ERR("File size way too small!\n");
1899 /* Data from ucode file: header followed by uCode images */
1900 ucode
= (struct il_ucode_header
*)ucode_raw
->data
;
1902 il
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1903 api_ver
= IL_UCODE_API(il
->ucode_ver
);
1904 inst_size
= il3945_ucode_get_inst_size(ucode
);
1905 data_size
= il3945_ucode_get_data_size(ucode
);
1906 init_size
= il3945_ucode_get_init_size(ucode
);
1907 init_data_size
= il3945_ucode_get_init_data_size(ucode
);
1908 boot_size
= il3945_ucode_get_boot_size(ucode
);
1909 src
= il3945_ucode_get_data(ucode
);
1911 /* api_ver should match the api version forming part of the
1912 * firmware filename ... but we don't check for that and only rely
1913 * on the API version read from firmware header from here on forward */
1915 if (api_ver
< api_min
|| api_ver
> api_max
) {
1916 IL_ERR("Driver unable to support your firmware API. "
1917 "Driver supports v%u, firmware is v%u.\n",
1923 if (api_ver
!= api_max
)
1924 IL_ERR("Firmware has old API version. Expected %u, "
1925 "got %u. New firmware can be obtained "
1926 "from http://www.intellinuxwireless.org.\n",
1929 IL_INFO("loaded firmware version %u.%u.%u.%u\n",
1930 IL_UCODE_MAJOR(il
->ucode_ver
),
1931 IL_UCODE_MINOR(il
->ucode_ver
),
1932 IL_UCODE_API(il
->ucode_ver
),
1933 IL_UCODE_SERIAL(il
->ucode_ver
));
1935 snprintf(il
->hw
->wiphy
->fw_version
,
1936 sizeof(il
->hw
->wiphy
->fw_version
),
1938 IL_UCODE_MAJOR(il
->ucode_ver
),
1939 IL_UCODE_MINOR(il
->ucode_ver
),
1940 IL_UCODE_API(il
->ucode_ver
),
1941 IL_UCODE_SERIAL(il
->ucode_ver
));
1943 D_INFO("f/w package hdr ucode version raw = 0x%x\n",
1945 D_INFO("f/w package hdr runtime inst size = %u\n",
1947 D_INFO("f/w package hdr runtime data size = %u\n",
1949 D_INFO("f/w package hdr init inst size = %u\n",
1951 D_INFO("f/w package hdr init data size = %u\n",
1953 D_INFO("f/w package hdr boot inst size = %u\n",
1957 /* Verify size of file vs. image size info in file's header */
1958 if (ucode_raw
->size
!= il3945_ucode_get_header_size(api_ver
) +
1959 inst_size
+ data_size
+ init_size
+
1960 init_data_size
+ boot_size
) {
1963 "uCode file size %zd does not match expected size\n",
1969 /* Verify that uCode images will fit in card's SRAM */
1970 if (inst_size
> IL39_MAX_INST_SIZE
) {
1971 D_INFO("uCode instr len %d too large to fit in\n",
1977 if (data_size
> IL39_MAX_DATA_SIZE
) {
1978 D_INFO("uCode data len %d too large to fit in\n",
1983 if (init_size
> IL39_MAX_INST_SIZE
) {
1985 "uCode init instr len %d too large to fit in\n",
1990 if (init_data_size
> IL39_MAX_DATA_SIZE
) {
1992 "uCode init data len %d too large to fit in\n",
1997 if (boot_size
> IL39_MAX_BSM_SIZE
) {
1999 "uCode boot instr len %d too large to fit in\n",
2005 /* Allocate ucode buffers for card's bus-master loading ... */
2007 /* Runtime instructions and 2 copies of data:
2008 * 1) unmodified from disk
2009 * 2) backup cache for save/restore during power-downs */
2010 il
->ucode_code
.len
= inst_size
;
2011 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_code
);
2013 il
->ucode_data
.len
= data_size
;
2014 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_data
);
2016 il
->ucode_data_backup
.len
= data_size
;
2017 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_data_backup
);
2019 if (!il
->ucode_code
.v_addr
|| !il
->ucode_data
.v_addr
||
2020 !il
->ucode_data_backup
.v_addr
)
2023 /* Initialization instructions and data */
2024 if (init_size
&& init_data_size
) {
2025 il
->ucode_init
.len
= init_size
;
2026 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_init
);
2028 il
->ucode_init_data
.len
= init_data_size
;
2029 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_init_data
);
2031 if (!il
->ucode_init
.v_addr
|| !il
->ucode_init_data
.v_addr
)
2035 /* Bootstrap (instructions only, no data) */
2037 il
->ucode_boot
.len
= boot_size
;
2038 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_boot
);
2040 if (!il
->ucode_boot
.v_addr
)
2044 /* Copy images into buffers for card's bus-master reads ... */
2046 /* Runtime instructions (first block of data in file) */
2049 "Copying (but not loading) uCode instr len %zd\n", len
);
2050 memcpy(il
->ucode_code
.v_addr
, src
, len
);
2053 D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2054 il
->ucode_code
.v_addr
, (u32
)il
->ucode_code
.p_addr
);
2056 /* Runtime data (2nd block)
2057 * NOTE: Copy into backup buffer will be done in il3945_up() */
2060 "Copying (but not loading) uCode data len %zd\n", len
);
2061 memcpy(il
->ucode_data
.v_addr
, src
, len
);
2062 memcpy(il
->ucode_data_backup
.v_addr
, src
, len
);
2065 /* Initialization instructions (3rd block) */
2069 "Copying (but not loading) init instr len %zd\n", len
);
2070 memcpy(il
->ucode_init
.v_addr
, src
, len
);
2074 /* Initialization data (4th block) */
2075 if (init_data_size
) {
2076 len
= init_data_size
;
2078 "Copying (but not loading) init data len %zd\n", len
);
2079 memcpy(il
->ucode_init_data
.v_addr
, src
, len
);
2083 /* Bootstrap instructions (5th block) */
2086 "Copying (but not loading) boot instr len %zd\n", len
);
2087 memcpy(il
->ucode_boot
.v_addr
, src
, len
);
2089 /* We have our copies now, allow OS release its copies */
2090 release_firmware(ucode_raw
);
2094 IL_ERR("failed to allocate pci memory\n");
2096 il3945_dealloc_ucode_pci(il
);
2099 release_firmware(ucode_raw
);
2107 * il3945_set_ucode_ptrs - Set uCode address location
2109 * Tell initialization uCode where to find runtime uCode.
2111 * BSM registers initially contain pointers to initialization uCode.
2112 * We need to replace them to load runtime uCode inst and data,
2113 * and to save runtime data when powering down.
2115 static int il3945_set_ucode_ptrs(struct il_priv
*il
)
2120 /* bits 31:0 for 3945 */
2121 pinst
= il
->ucode_code
.p_addr
;
2122 pdata
= il
->ucode_data_backup
.p_addr
;
2124 /* Tell bootstrap uCode where to find image to load */
2125 il_wr_prph(il
, BSM_DRAM_INST_PTR_REG
, pinst
);
2126 il_wr_prph(il
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2127 il_wr_prph(il
, BSM_DRAM_DATA_BYTECOUNT_REG
,
2128 il
->ucode_data
.len
);
2130 /* Inst byte count must be last to set up, bit 31 signals uCode
2131 * that all new ptr/size info is in place */
2132 il_wr_prph(il
, BSM_DRAM_INST_BYTECOUNT_REG
,
2133 il
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2135 D_INFO("Runtime uCode pointers are set.\n");
2141 * il3945_init_alive_start - Called after REPLY_ALIVE notification received
2143 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2145 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2147 static void il3945_init_alive_start(struct il_priv
*il
)
2149 /* Check alive response for "valid" sign from uCode */
2150 if (il
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2151 /* We had an error bringing up the hardware, so take it
2152 * all the way back down so we can try again */
2153 D_INFO("Initialize Alive failed.\n");
2157 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2158 * This is a paranoid check, because we would not have gotten the
2159 * "initialize" alive if code weren't properly loaded. */
2160 if (il3945_verify_ucode(il
)) {
2161 /* Runtime instruction load was bad;
2162 * take it all the way back down so we can try again */
2163 D_INFO("Bad \"initialize\" uCode load.\n");
2167 /* Send pointers to protocol/runtime uCode image ... init code will
2168 * load and launch runtime uCode, which will send us another "Alive"
2170 D_INFO("Initialization Alive received.\n");
2171 if (il3945_set_ucode_ptrs(il
)) {
2172 /* Runtime instruction load won't happen;
2173 * take it all the way back down so we can try again */
2174 D_INFO("Couldn't set up uCode pointers.\n");
2180 queue_work(il
->workqueue
, &il
->restart
);
2184 * il3945_alive_start - called after REPLY_ALIVE notification received
2185 * from protocol/runtime uCode (initialization uCode's
2186 * Alive gets handled by il3945_init_alive_start()).
2188 static void il3945_alive_start(struct il_priv
*il
)
2190 int thermal_spin
= 0;
2192 struct il_rxon_context
*ctx
= &il
->ctx
;
2194 D_INFO("Runtime Alive received.\n");
2196 if (il
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2197 /* We had an error bringing up the hardware, so take it
2198 * all the way back down so we can try again */
2199 D_INFO("Alive failed.\n");
2203 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2204 * This is a paranoid check, because we would not have gotten the
2205 * "runtime" alive if code weren't properly loaded. */
2206 if (il3945_verify_ucode(il
)) {
2207 /* Runtime instruction load was bad;
2208 * take it all the way back down so we can try again */
2209 D_INFO("Bad runtime uCode load.\n");
2213 rfkill
= il_rd_prph(il
, APMG_RFKILL_REG
);
2214 D_INFO("RFKILL status: 0x%x\n", rfkill
);
2217 clear_bit(STATUS_RF_KILL_HW
, &il
->status
);
2218 /* if RFKILL is not on, then wait for thermal
2219 * sensor in adapter to kick in */
2220 while (il3945_hw_get_temperature(il
) == 0) {
2226 D_INFO("Thermal calibration took %dus\n",
2229 set_bit(STATUS_RF_KILL_HW
, &il
->status
);
2231 /* After the ALIVE response, we can send commands to 3945 uCode */
2232 set_bit(STATUS_ALIVE
, &il
->status
);
2234 /* Enable watchdog to monitor the driver tx queues */
2235 il_setup_watchdog(il
);
2237 if (il_is_rfkill(il
))
2240 ieee80211_wake_queues(il
->hw
);
2242 il
->active_rate
= RATES_MASK_3945
;
2244 il_power_update_mode(il
, true);
2246 if (il_is_associated(il
)) {
2247 struct il3945_rxon_cmd
*active_rxon
=
2248 (struct il3945_rxon_cmd
*)(&ctx
->active
);
2250 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2251 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2253 /* Initialize our rx_config data */
2254 il_connection_init_rx_config(il
, ctx
);
2257 /* Configure Bluetooth device coexistence support */
2258 il_send_bt_config(il
);
2260 set_bit(STATUS_READY
, &il
->status
);
2262 /* Configure the adapter for unassociated operation */
2263 il3945_commit_rxon(il
, ctx
);
2265 il3945_reg_txpower_periodic(il
);
2267 D_INFO("ALIVE processing complete.\n");
2268 wake_up(&il
->wait_command_queue
);
2273 queue_work(il
->workqueue
, &il
->restart
);
2276 static void il3945_cancel_deferred_work(struct il_priv
*il
);
2278 static void __il3945_down(struct il_priv
*il
)
2280 unsigned long flags
;
2283 D_INFO(DRV_NAME
" is going down\n");
2285 il_scan_cancel_timeout(il
, 200);
2287 exit_pending
= test_and_set_bit(STATUS_EXIT_PENDING
, &il
->status
);
2289 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2290 * to prevent rearm timer */
2291 del_timer_sync(&il
->watchdog
);
2293 /* Station information will now be cleared in device */
2294 il_clear_ucode_stations(il
, NULL
);
2295 il_dealloc_bcast_stations(il
);
2296 il_clear_driver_stations(il
);
2298 /* Unblock any waiting calls */
2299 wake_up_all(&il
->wait_command_queue
);
2301 /* Wipe out the EXIT_PENDING status bit if we are not actually
2302 * exiting the module */
2304 clear_bit(STATUS_EXIT_PENDING
, &il
->status
);
2306 /* stop and reset the on-board processor */
2307 _il_wr(il
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2309 /* tell the device to stop sending interrupts */
2310 spin_lock_irqsave(&il
->lock
, flags
);
2311 il_disable_interrupts(il
);
2312 spin_unlock_irqrestore(&il
->lock
, flags
);
2313 il3945_synchronize_irq(il
);
2315 if (il
->mac80211_registered
)
2316 ieee80211_stop_queues(il
->hw
);
2318 /* If we have not previously called il3945_init() then
2319 * clear all bits but the RF Kill bits and return */
2320 if (!il_is_init(il
)) {
2321 il
->status
= test_bit(STATUS_RF_KILL_HW
, &il
->status
) <<
2323 test_bit(STATUS_GEO_CONFIGURED
, &il
->status
) <<
2324 STATUS_GEO_CONFIGURED
|
2325 test_bit(STATUS_EXIT_PENDING
, &il
->status
) <<
2326 STATUS_EXIT_PENDING
;
2330 /* ...otherwise clear out all the status bits but the RF Kill
2331 * bit and continue taking the NIC down. */
2332 il
->status
&= test_bit(STATUS_RF_KILL_HW
, &il
->status
) <<
2334 test_bit(STATUS_GEO_CONFIGURED
, &il
->status
) <<
2335 STATUS_GEO_CONFIGURED
|
2336 test_bit(STATUS_FW_ERROR
, &il
->status
) <<
2338 test_bit(STATUS_EXIT_PENDING
, &il
->status
) <<
2339 STATUS_EXIT_PENDING
;
2341 il3945_hw_txq_ctx_stop(il
);
2342 il3945_hw_rxq_stop(il
);
2344 /* Power-down device's busmaster DMA clocks */
2345 il_wr_prph(il
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2348 /* Stop the device, and put it in low power state */
2352 memset(&il
->card_alive
, 0, sizeof(struct il_alive_resp
));
2355 dev_kfree_skb(il
->beacon_skb
);
2356 il
->beacon_skb
= NULL
;
2358 /* clear out any free frames */
2359 il3945_clear_free_frames(il
);
2362 static void il3945_down(struct il_priv
*il
)
2364 mutex_lock(&il
->mutex
);
2366 mutex_unlock(&il
->mutex
);
2368 il3945_cancel_deferred_work(il
);
2371 #define MAX_HW_RESTARTS 5
2373 static int il3945_alloc_bcast_station(struct il_priv
*il
)
2375 struct il_rxon_context
*ctx
= &il
->ctx
;
2376 unsigned long flags
;
2379 spin_lock_irqsave(&il
->sta_lock
, flags
);
2380 sta_id
= il_prep_station(il
, ctx
,
2381 il_bcast_addr
, false, NULL
);
2382 if (sta_id
== IL_INVALID_STATION
) {
2383 IL_ERR("Unable to prepare broadcast station\n");
2384 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
2389 il
->stations
[sta_id
].used
|= IL_STA_DRIVER_ACTIVE
;
2390 il
->stations
[sta_id
].used
|= IL_STA_BCAST
;
2391 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
2396 static int __il3945_up(struct il_priv
*il
)
2400 rc
= il3945_alloc_bcast_station(il
);
2404 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
)) {
2405 IL_WARN("Exit pending; will not bring the NIC up\n");
2409 if (!il
->ucode_data_backup
.v_addr
|| !il
->ucode_data
.v_addr
) {
2410 IL_ERR("ucode not available for device bring up\n");
2414 /* If platform's RF_KILL switch is NOT set to KILL */
2415 if (_il_rd(il
, CSR_GP_CNTRL
) &
2416 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2417 clear_bit(STATUS_RF_KILL_HW
, &il
->status
);
2419 set_bit(STATUS_RF_KILL_HW
, &il
->status
);
2420 IL_WARN("Radio disabled by HW RF Kill switch\n");
2424 _il_wr(il
, CSR_INT
, 0xFFFFFFFF);
2426 rc
= il3945_hw_nic_init(il
);
2428 IL_ERR("Unable to int nic\n");
2432 /* make sure rfkill handshake bits are cleared */
2433 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2434 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
,
2435 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2437 /* clear (again), then enable host interrupts */
2438 _il_wr(il
, CSR_INT
, 0xFFFFFFFF);
2439 il_enable_interrupts(il
);
2441 /* really make sure rfkill handshake bits are cleared */
2442 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2443 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2445 /* Copy original ucode data image from disk into backup cache.
2446 * This will be used to initialize the on-board processor's
2447 * data SRAM for a clean start when the runtime program first loads. */
2448 memcpy(il
->ucode_data_backup
.v_addr
, il
->ucode_data
.v_addr
,
2449 il
->ucode_data
.len
);
2451 /* We return success when we resume from suspend and rf_kill is on. */
2452 if (test_bit(STATUS_RF_KILL_HW
, &il
->status
))
2455 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2457 /* load bootstrap state machine,
2458 * load bootstrap program into processor's memory,
2459 * prepare to load the "initialize" uCode */
2460 rc
= il
->cfg
->ops
->lib
->load_ucode(il
);
2464 "Unable to set up bootstrap uCode: %d\n", rc
);
2468 /* start card; "initialize" will load runtime ucode */
2469 il3945_nic_start(il
);
2471 D_INFO(DRV_NAME
" is coming up\n");
2476 set_bit(STATUS_EXIT_PENDING
, &il
->status
);
2478 clear_bit(STATUS_EXIT_PENDING
, &il
->status
);
2480 /* tried to restart and config the device for as long as our
2481 * patience could withstand */
2482 IL_ERR("Unable to initialize device after %d attempts.\n", i
);
2487 /*****************************************************************************
2489 * Workqueue callbacks
2491 *****************************************************************************/
2493 static void il3945_bg_init_alive_start(struct work_struct
*data
)
2495 struct il_priv
*il
=
2496 container_of(data
, struct il_priv
, init_alive_start
.work
);
2498 mutex_lock(&il
->mutex
);
2499 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2502 il3945_init_alive_start(il
);
2504 mutex_unlock(&il
->mutex
);
2507 static void il3945_bg_alive_start(struct work_struct
*data
)
2509 struct il_priv
*il
=
2510 container_of(data
, struct il_priv
, alive_start
.work
);
2512 mutex_lock(&il
->mutex
);
2513 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2516 il3945_alive_start(il
);
2518 mutex_unlock(&il
->mutex
);
2522 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2523 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2524 * *is* readable even when device has been SW_RESET into low power mode
2525 * (e.g. during RF KILL).
2527 static void il3945_rfkill_poll(struct work_struct
*data
)
2529 struct il_priv
*il
=
2530 container_of(data
, struct il_priv
, _3945
.rfkill_poll
.work
);
2531 bool old_rfkill
= test_bit(STATUS_RF_KILL_HW
, &il
->status
);
2532 bool new_rfkill
= !(_il_rd(il
, CSR_GP_CNTRL
)
2533 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2535 if (new_rfkill
!= old_rfkill
) {
2537 set_bit(STATUS_RF_KILL_HW
, &il
->status
);
2539 clear_bit(STATUS_RF_KILL_HW
, &il
->status
);
2541 wiphy_rfkill_set_hw_state(il
->hw
->wiphy
, new_rfkill
);
2543 D_RF_KILL("RF_KILL bit toggled to %s.\n",
2544 new_rfkill
? "disable radio" : "enable radio");
2547 /* Keep this running, even if radio now enabled. This will be
2548 * cancelled in mac_start() if system decides to start again */
2549 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
,
2550 round_jiffies_relative(2 * HZ
));
2554 int il3945_request_scan(struct il_priv
*il
, struct ieee80211_vif
*vif
)
2556 struct il_host_cmd cmd
= {
2557 .id
= REPLY_SCAN_CMD
,
2558 .len
= sizeof(struct il3945_scan_cmd
),
2559 .flags
= CMD_SIZE_HUGE
,
2561 struct il3945_scan_cmd
*scan
;
2563 enum ieee80211_band band
;
2564 bool is_active
= false;
2568 lockdep_assert_held(&il
->mutex
);
2570 if (!il
->scan_cmd
) {
2571 il
->scan_cmd
= kmalloc(sizeof(struct il3945_scan_cmd
) +
2572 IL_MAX_SCAN_SIZE
, GFP_KERNEL
);
2573 if (!il
->scan_cmd
) {
2574 D_SCAN("Fail to allocate scan memory\n");
2578 scan
= il
->scan_cmd
;
2579 memset(scan
, 0, sizeof(struct il3945_scan_cmd
) + IL_MAX_SCAN_SIZE
);
2581 scan
->quiet_plcp_th
= IL_PLCP_QUIET_THRESH
;
2582 scan
->quiet_time
= IL_ACTIVE_QUIET_TIME
;
2584 if (il_is_associated(il
)) {
2587 u32 suspend_time
= 100;
2588 u32 scan_suspend_time
= 100;
2590 D_INFO("Scanning while associated...\n");
2592 interval
= vif
->bss_conf
.beacon_int
;
2594 scan
->suspend_time
= 0;
2595 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2597 interval
= suspend_time
;
2599 * suspend time format:
2600 * 0-19: beacon interval in usec (time before exec.)
2602 * 24-31: number of beacons (suspend between channels)
2605 extra
= (suspend_time
/ interval
) << 24;
2606 scan_suspend_time
= 0xFF0FFFFF &
2607 (extra
| ((suspend_time
% interval
) * 1024));
2609 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2610 D_SCAN("suspend_time 0x%X beacon interval %d\n",
2611 scan_suspend_time
, interval
);
2614 if (il
->scan_request
->n_ssids
) {
2616 D_SCAN("Kicking off active scan\n");
2617 for (i
= 0; i
< il
->scan_request
->n_ssids
; i
++) {
2618 /* always does wildcard anyway */
2619 if (!il
->scan_request
->ssids
[i
].ssid_len
)
2621 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2622 scan
->direct_scan
[p
].len
=
2623 il
->scan_request
->ssids
[i
].ssid_len
;
2624 memcpy(scan
->direct_scan
[p
].ssid
,
2625 il
->scan_request
->ssids
[i
].ssid
,
2626 il
->scan_request
->ssids
[i
].ssid_len
);
2632 D_SCAN("Kicking off passive scan.\n");
2634 /* We don't build a direct scan probe request; the uCode will do
2635 * that based on the direct_mask added to each channel entry */
2636 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2637 scan
->tx_cmd
.sta_id
= il
->ctx
.bcast_sta_id
;
2638 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2640 /* flags + rate selection */
2642 switch (il
->scan_band
) {
2643 case IEEE80211_BAND_2GHZ
:
2644 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2645 scan
->tx_cmd
.rate
= RATE_1M_PLCP
;
2646 band
= IEEE80211_BAND_2GHZ
;
2648 case IEEE80211_BAND_5GHZ
:
2649 scan
->tx_cmd
.rate
= RATE_6M_PLCP
;
2650 band
= IEEE80211_BAND_5GHZ
;
2653 IL_WARN("Invalid scan band\n");
2658 * If active scaning is requested but a certain channel
2659 * is marked passive, we can do active scanning if we
2660 * detect transmissions.
2662 scan
->good_CRC_th
= is_active
? IL_GOOD_CRC_TH_DEFAULT
:
2663 IL_GOOD_CRC_TH_DISABLED
;
2665 len
= il_fill_probe_req(il
, (struct ieee80211_mgmt
*)scan
->data
,
2666 vif
->addr
, il
->scan_request
->ie
,
2667 il
->scan_request
->ie_len
,
2668 IL_MAX_SCAN_SIZE
- sizeof(*scan
));
2669 scan
->tx_cmd
.len
= cpu_to_le16(len
);
2671 /* select Rx antennas */
2672 scan
->flags
|= il3945_get_antenna_flags(il
);
2674 scan
->channel_count
= il3945_get_channels_for_scan(il
, band
, is_active
, n_probes
,
2675 (void *)&scan
->data
[len
], vif
);
2676 if (scan
->channel_count
== 0) {
2677 D_SCAN("channel count %d\n", scan
->channel_count
);
2681 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
2682 scan
->channel_count
* sizeof(struct il3945_scan_channel
);
2684 scan
->len
= cpu_to_le16(cmd
.len
);
2686 set_bit(STATUS_SCAN_HW
, &il
->status
);
2687 ret
= il_send_cmd_sync(il
, &cmd
);
2689 clear_bit(STATUS_SCAN_HW
, &il
->status
);
2693 void il3945_post_scan(struct il_priv
*il
)
2695 struct il_rxon_context
*ctx
= &il
->ctx
;
2698 * Since setting the RXON may have been deferred while
2699 * performing the scan, fire one off if needed
2701 if (memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
2702 il3945_commit_rxon(il
, ctx
);
2705 static void il3945_bg_restart(struct work_struct
*data
)
2707 struct il_priv
*il
= container_of(data
, struct il_priv
, restart
);
2709 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2712 if (test_and_clear_bit(STATUS_FW_ERROR
, &il
->status
)) {
2713 struct il_rxon_context
*ctx
;
2714 mutex_lock(&il
->mutex
);
2715 for_each_context(il
, ctx
)
2718 mutex_unlock(&il
->mutex
);
2720 ieee80211_restart_hw(il
->hw
);
2724 mutex_lock(&il
->mutex
);
2725 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
)) {
2726 mutex_unlock(&il
->mutex
);
2731 mutex_unlock(&il
->mutex
);
2735 static void il3945_bg_rx_replenish(struct work_struct
*data
)
2737 struct il_priv
*il
=
2738 container_of(data
, struct il_priv
, rx_replenish
);
2740 mutex_lock(&il
->mutex
);
2741 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2744 il3945_rx_replenish(il
);
2746 mutex_unlock(&il
->mutex
);
2749 void il3945_post_associate(struct il_priv
*il
)
2752 struct ieee80211_conf
*conf
= NULL
;
2753 struct il_rxon_context
*ctx
= &il
->ctx
;
2755 if (!ctx
->vif
|| !il
->is_open
)
2758 D_ASSOC("Associated as %d to: %pM\n",
2759 ctx
->vif
->bss_conf
.aid
, ctx
->active
.bssid_addr
);
2761 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2764 il_scan_cancel_timeout(il
, 200);
2766 conf
= il_ieee80211_get_hw_conf(il
->hw
);
2768 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2769 il3945_commit_rxon(il
, ctx
);
2771 rc
= il_send_rxon_timing(il
, ctx
);
2773 IL_WARN("REPLY_RXON_TIMING failed - "
2774 "Attempting to continue.\n");
2776 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2778 ctx
->staging
.assoc_id
= cpu_to_le16(ctx
->vif
->bss_conf
.aid
);
2780 D_ASSOC("assoc id %d beacon interval %d\n",
2781 ctx
->vif
->bss_conf
.aid
, ctx
->vif
->bss_conf
.beacon_int
);
2783 if (ctx
->vif
->bss_conf
.use_short_preamble
)
2784 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2786 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2788 if (ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
2789 if (ctx
->vif
->bss_conf
.use_short_slot
)
2790 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2792 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2795 il3945_commit_rxon(il
, ctx
);
2797 switch (ctx
->vif
->type
) {
2798 case NL80211_IFTYPE_STATION
:
2799 il3945_rate_scale_init(il
->hw
, IL_AP_ID
);
2801 case NL80211_IFTYPE_ADHOC
:
2802 il3945_send_beacon_cmd(il
);
2805 IL_ERR("%s Should not be called in %d mode\n",
2806 __func__
, ctx
->vif
->type
);
2811 /*****************************************************************************
2813 * mac80211 entry point functions
2815 *****************************************************************************/
2817 #define UCODE_READY_TIMEOUT (2 * HZ)
2819 static int il3945_mac_start(struct ieee80211_hw
*hw
)
2821 struct il_priv
*il
= hw
->priv
;
2824 D_MAC80211("enter\n");
2826 /* we should be verifying the device is ready to be opened */
2827 mutex_lock(&il
->mutex
);
2829 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2830 * ucode filename and max sizes are card-specific. */
2832 if (!il
->ucode_code
.len
) {
2833 ret
= il3945_read_ucode(il
);
2835 IL_ERR("Could not read microcode: %d\n", ret
);
2836 mutex_unlock(&il
->mutex
);
2837 goto out_release_irq
;
2841 ret
= __il3945_up(il
);
2843 mutex_unlock(&il
->mutex
);
2846 goto out_release_irq
;
2848 D_INFO("Start UP work.\n");
2850 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
2851 * mac80211 will not be run successfully. */
2852 ret
= wait_event_timeout(il
->wait_command_queue
,
2853 test_bit(STATUS_READY
, &il
->status
),
2854 UCODE_READY_TIMEOUT
);
2856 if (!test_bit(STATUS_READY
, &il
->status
)) {
2858 "Wait for START_ALIVE timeout after %dms.\n",
2859 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2861 goto out_release_irq
;
2865 /* ucode is running and will send rfkill notifications,
2866 * no need to poll the killswitch state anymore */
2867 cancel_delayed_work(&il
->_3945
.rfkill_poll
);
2870 D_MAC80211("leave\n");
2875 D_MAC80211("leave - failed\n");
2879 static void il3945_mac_stop(struct ieee80211_hw
*hw
)
2881 struct il_priv
*il
= hw
->priv
;
2883 D_MAC80211("enter\n");
2886 D_MAC80211("leave - skip\n");
2894 flush_workqueue(il
->workqueue
);
2896 /* start polling the killswitch state again */
2897 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
,
2898 round_jiffies_relative(2 * HZ
));
2900 D_MAC80211("leave\n");
2903 static void il3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2905 struct il_priv
*il
= hw
->priv
;
2907 D_MAC80211("enter\n");
2909 D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2910 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2912 if (il3945_tx_skb(il
, skb
))
2913 dev_kfree_skb_any(skb
);
2915 D_MAC80211("leave\n");
2918 void il3945_config_ap(struct il_priv
*il
)
2920 struct il_rxon_context
*ctx
= &il
->ctx
;
2921 struct ieee80211_vif
*vif
= ctx
->vif
;
2924 if (test_bit(STATUS_EXIT_PENDING
, &il
->status
))
2927 /* The following should be done only at AP bring up */
2928 if (!(il_is_associated(il
))) {
2930 /* RXON - unassoc (to set timing command) */
2931 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2932 il3945_commit_rxon(il
, ctx
);
2935 rc
= il_send_rxon_timing(il
, ctx
);
2937 IL_WARN("REPLY_RXON_TIMING failed - "
2938 "Attempting to continue.\n");
2940 ctx
->staging
.assoc_id
= 0;
2942 if (vif
->bss_conf
.use_short_preamble
)
2943 ctx
->staging
.flags
|=
2944 RXON_FLG_SHORT_PREAMBLE_MSK
;
2946 ctx
->staging
.flags
&=
2947 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2949 if (ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
2950 if (vif
->bss_conf
.use_short_slot
)
2951 ctx
->staging
.flags
|=
2952 RXON_FLG_SHORT_SLOT_MSK
;
2954 ctx
->staging
.flags
&=
2955 ~RXON_FLG_SHORT_SLOT_MSK
;
2957 /* restore RXON assoc */
2958 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2959 il3945_commit_rxon(il
, ctx
);
2961 il3945_send_beacon_cmd(il
);
2964 static int il3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2965 struct ieee80211_vif
*vif
,
2966 struct ieee80211_sta
*sta
,
2967 struct ieee80211_key_conf
*key
)
2969 struct il_priv
*il
= hw
->priv
;
2971 u8 sta_id
= IL_INVALID_STATION
;
2974 D_MAC80211("enter\n");
2976 if (il3945_mod_params
.sw_crypto
) {
2977 D_MAC80211("leave - hwcrypto disabled\n");
2982 * To support IBSS RSN, don't program group keys in IBSS, the
2983 * hardware will then not attempt to decrypt the frames.
2985 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
2986 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
))
2989 static_key
= !il_is_associated(il
);
2992 sta_id
= il_sta_id_or_broadcast(
2994 if (sta_id
== IL_INVALID_STATION
)
2998 mutex_lock(&il
->mutex
);
2999 il_scan_cancel_timeout(il
, 100);
3004 ret
= il3945_set_static_key(il
, key
);
3006 ret
= il3945_set_dynamic_key(il
, key
, sta_id
);
3007 D_MAC80211("enable hwcrypto key\n");
3011 ret
= il3945_remove_static_key(il
);
3013 ret
= il3945_clear_sta_key_info(il
, sta_id
);
3014 D_MAC80211("disable hwcrypto key\n");
3020 mutex_unlock(&il
->mutex
);
3021 D_MAC80211("leave\n");
3026 static int il3945_mac_sta_add(struct ieee80211_hw
*hw
,
3027 struct ieee80211_vif
*vif
,
3028 struct ieee80211_sta
*sta
)
3030 struct il_priv
*il
= hw
->priv
;
3031 struct il3945_sta_priv
*sta_priv
= (void *)sta
->drv_priv
;
3033 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
3036 D_INFO("received request to add station %pM\n",
3038 mutex_lock(&il
->mutex
);
3039 D_INFO("proceeding to add station %pM\n",
3041 sta_priv
->common
.sta_id
= IL_INVALID_STATION
;
3044 ret
= il_add_station_common(il
,
3046 sta
->addr
, is_ap
, sta
, &sta_id
);
3048 IL_ERR("Unable to add station %pM (%d)\n",
3050 /* Should we return success if return code is EEXIST ? */
3051 mutex_unlock(&il
->mutex
);
3055 sta_priv
->common
.sta_id
= sta_id
;
3057 /* Initialize rate scaling */
3058 D_INFO("Initializing rate scaling for station %pM\n",
3060 il3945_rs_rate_init(il
, sta
, sta_id
);
3061 mutex_unlock(&il
->mutex
);
3066 static void il3945_configure_filter(struct ieee80211_hw
*hw
,
3067 unsigned int changed_flags
,
3068 unsigned int *total_flags
,
3071 struct il_priv
*il
= hw
->priv
;
3072 __le32 filter_or
= 0, filter_nand
= 0;
3073 struct il_rxon_context
*ctx
= &il
->ctx
;
3075 #define CHK(test, flag) do { \
3076 if (*total_flags & (test)) \
3077 filter_or |= (flag); \
3079 filter_nand |= (flag); \
3082 D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
3083 changed_flags
, *total_flags
);
3085 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
3086 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
);
3087 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
3091 mutex_lock(&il
->mutex
);
3093 ctx
->staging
.filter_flags
&= ~filter_nand
;
3094 ctx
->staging
.filter_flags
|= filter_or
;
3097 * Not committing directly because hardware can perform a scan,
3098 * but even if hw is ready, committing here breaks for some reason,
3099 * we'll eventually commit the filter flags change anyway.
3102 mutex_unlock(&il
->mutex
);
3105 * Receiving all multicast frames is always enabled by the
3106 * default flags setup in il_connection_init_rx_config()
3107 * since we currently do not support programming multicast
3108 * filters into the device.
3110 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
3111 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
3115 /*****************************************************************************
3119 *****************************************************************************/
3121 #ifdef CONFIG_IWLEGACY_DEBUG
3124 * The following adds a new attribute to the sysfs representation
3125 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3126 * used for controlling the debug level.
3128 * See the level definitions in iwl for details.
3130 * The debug_level being managed using sysfs below is a per device debug
3131 * level that is used instead of the global debug level if it (the per
3132 * device debug level) is set.
3134 static ssize_t
il3945_show_debug_level(struct device
*d
,
3135 struct device_attribute
*attr
, char *buf
)
3137 struct il_priv
*il
= dev_get_drvdata(d
);
3138 return sprintf(buf
, "0x%08X\n", il_get_debug_level(il
));
3140 static ssize_t
il3945_store_debug_level(struct device
*d
,
3141 struct device_attribute
*attr
,
3142 const char *buf
, size_t count
)
3144 struct il_priv
*il
= dev_get_drvdata(d
);
3148 ret
= strict_strtoul(buf
, 0, &val
);
3150 IL_INFO("%s is not in hex or decimal form.\n", buf
);
3152 il
->debug_level
= val
;
3153 if (il_alloc_traffic_mem(il
))
3155 "Not enough memory to generate traffic log\n");
3157 return strnlen(buf
, count
);
3160 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3161 il3945_show_debug_level
, il3945_store_debug_level
);
3163 #endif /* CONFIG_IWLEGACY_DEBUG */
3165 static ssize_t
il3945_show_temperature(struct device
*d
,
3166 struct device_attribute
*attr
, char *buf
)
3168 struct il_priv
*il
= dev_get_drvdata(d
);
3170 if (!il_is_alive(il
))
3173 return sprintf(buf
, "%d\n", il3945_hw_get_temperature(il
));
3176 static DEVICE_ATTR(temperature
, S_IRUGO
, il3945_show_temperature
, NULL
);
3178 static ssize_t
il3945_show_tx_power(struct device
*d
,
3179 struct device_attribute
*attr
, char *buf
)
3181 struct il_priv
*il
= dev_get_drvdata(d
);
3182 return sprintf(buf
, "%d\n", il
->tx_power_user_lmt
);
3185 static ssize_t
il3945_store_tx_power(struct device
*d
,
3186 struct device_attribute
*attr
,
3187 const char *buf
, size_t count
)
3189 struct il_priv
*il
= dev_get_drvdata(d
);
3190 char *p
= (char *)buf
;
3193 val
= simple_strtoul(p
, &p
, 10);
3195 IL_INFO(": %s is not in decimal form.\n", buf
);
3197 il3945_hw_reg_set_txpower(il
, val
);
3202 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, il3945_show_tx_power
, il3945_store_tx_power
);
3204 static ssize_t
il3945_show_flags(struct device
*d
,
3205 struct device_attribute
*attr
, char *buf
)
3207 struct il_priv
*il
= dev_get_drvdata(d
);
3208 struct il_rxon_context
*ctx
= &il
->ctx
;
3210 return sprintf(buf
, "0x%04X\n", ctx
->active
.flags
);
3213 static ssize_t
il3945_store_flags(struct device
*d
,
3214 struct device_attribute
*attr
,
3215 const char *buf
, size_t count
)
3217 struct il_priv
*il
= dev_get_drvdata(d
);
3218 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3219 struct il_rxon_context
*ctx
= &il
->ctx
;
3221 mutex_lock(&il
->mutex
);
3222 if (le32_to_cpu(ctx
->staging
.flags
) != flags
) {
3223 /* Cancel any currently running scans... */
3224 if (il_scan_cancel_timeout(il
, 100))
3225 IL_WARN("Could not cancel scan.\n");
3227 D_INFO("Committing rxon.flags = 0x%04X\n",
3229 ctx
->staging
.flags
= cpu_to_le32(flags
);
3230 il3945_commit_rxon(il
, ctx
);
3233 mutex_unlock(&il
->mutex
);
3238 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, il3945_show_flags
, il3945_store_flags
);
3240 static ssize_t
il3945_show_filter_flags(struct device
*d
,
3241 struct device_attribute
*attr
, char *buf
)
3243 struct il_priv
*il
= dev_get_drvdata(d
);
3244 struct il_rxon_context
*ctx
= &il
->ctx
;
3246 return sprintf(buf
, "0x%04X\n",
3247 le32_to_cpu(ctx
->active
.filter_flags
));
3250 static ssize_t
il3945_store_filter_flags(struct device
*d
,
3251 struct device_attribute
*attr
,
3252 const char *buf
, size_t count
)
3254 struct il_priv
*il
= dev_get_drvdata(d
);
3255 struct il_rxon_context
*ctx
= &il
->ctx
;
3256 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3258 mutex_lock(&il
->mutex
);
3259 if (le32_to_cpu(ctx
->staging
.filter_flags
) != filter_flags
) {
3260 /* Cancel any currently running scans... */
3261 if (il_scan_cancel_timeout(il
, 100))
3262 IL_WARN("Could not cancel scan.\n");
3264 D_INFO("Committing rxon.filter_flags = "
3265 "0x%04X\n", filter_flags
);
3266 ctx
->staging
.filter_flags
=
3267 cpu_to_le32(filter_flags
);
3268 il3945_commit_rxon(il
, ctx
);
3271 mutex_unlock(&il
->mutex
);
3276 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, il3945_show_filter_flags
,
3277 il3945_store_filter_flags
);
3279 static ssize_t
il3945_show_measurement(struct device
*d
,
3280 struct device_attribute
*attr
, char *buf
)
3282 struct il_priv
*il
= dev_get_drvdata(d
);
3283 struct il_spectrum_notification measure_report
;
3284 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3285 u8
*data
= (u8
*)&measure_report
;
3286 unsigned long flags
;
3288 spin_lock_irqsave(&il
->lock
, flags
);
3289 if (!(il
->measurement_status
& MEASUREMENT_READY
)) {
3290 spin_unlock_irqrestore(&il
->lock
, flags
);
3293 memcpy(&measure_report
, &il
->measure_report
, size
);
3294 il
->measurement_status
= 0;
3295 spin_unlock_irqrestore(&il
->lock
, flags
);
3297 while (size
&& PAGE_SIZE
- len
) {
3298 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3299 PAGE_SIZE
- len
, 1);
3301 if (PAGE_SIZE
- len
)
3305 size
-= min(size
, 16U);
3311 static ssize_t
il3945_store_measurement(struct device
*d
,
3312 struct device_attribute
*attr
,
3313 const char *buf
, size_t count
)
3315 struct il_priv
*il
= dev_get_drvdata(d
);
3316 struct il_rxon_context
*ctx
= &il
->ctx
;
3317 struct ieee80211_measurement_params params
= {
3318 .channel
= le16_to_cpu(ctx
->active
.channel
),
3319 .start_time
= cpu_to_le64(il
->_3945
.last_tsf
),
3320 .duration
= cpu_to_le16(1),
3322 u8 type
= IL_MEASURE_BASIC
;
3328 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3329 channel
= simple_strtoul(p
, NULL
, 0);
3331 params
.channel
= channel
;
3334 while (*p
&& *p
!= ' ')
3337 type
= simple_strtoul(p
+ 1, NULL
, 0);
3340 D_INFO("Invoking measurement of type %d on "
3341 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
3342 il3945_get_measurement(il
, ¶ms
, type
);
3347 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
3348 il3945_show_measurement
, il3945_store_measurement
);
3350 static ssize_t
il3945_store_retry_rate(struct device
*d
,
3351 struct device_attribute
*attr
,
3352 const char *buf
, size_t count
)
3354 struct il_priv
*il
= dev_get_drvdata(d
);
3356 il
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3357 if (il
->retry_rate
<= 0)
3363 static ssize_t
il3945_show_retry_rate(struct device
*d
,
3364 struct device_attribute
*attr
, char *buf
)
3366 struct il_priv
*il
= dev_get_drvdata(d
);
3367 return sprintf(buf
, "%d", il
->retry_rate
);
3370 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, il3945_show_retry_rate
,
3371 il3945_store_retry_rate
);
3374 static ssize_t
il3945_show_channels(struct device
*d
,
3375 struct device_attribute
*attr
, char *buf
)
3377 /* all this shit doesn't belong into sysfs anyway */
3381 static DEVICE_ATTR(channels
, S_IRUSR
, il3945_show_channels
, NULL
);
3383 static ssize_t
il3945_show_antenna(struct device
*d
,
3384 struct device_attribute
*attr
, char *buf
)
3386 struct il_priv
*il
= dev_get_drvdata(d
);
3388 if (!il_is_alive(il
))
3391 return sprintf(buf
, "%d\n", il3945_mod_params
.antenna
);
3394 static ssize_t
il3945_store_antenna(struct device
*d
,
3395 struct device_attribute
*attr
,
3396 const char *buf
, size_t count
)
3398 struct il_priv
*il __maybe_unused
= dev_get_drvdata(d
);
3404 if (sscanf(buf
, "%1i", &ant
) != 1) {
3405 D_INFO("not in hex or decimal form.\n");
3409 if (ant
>= 0 && ant
<= 2) {
3410 D_INFO("Setting antenna select to %d.\n", ant
);
3411 il3945_mod_params
.antenna
= (enum il3945_antenna
)ant
;
3413 D_INFO("Bad antenna select value %d.\n", ant
);
3419 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, il3945_show_antenna
, il3945_store_antenna
);
3421 static ssize_t
il3945_show_status(struct device
*d
,
3422 struct device_attribute
*attr
, char *buf
)
3424 struct il_priv
*il
= dev_get_drvdata(d
);
3425 if (!il_is_alive(il
))
3427 return sprintf(buf
, "0x%08x\n", (int)il
->status
);
3430 static DEVICE_ATTR(status
, S_IRUGO
, il3945_show_status
, NULL
);
3432 static ssize_t
il3945_dump_error_log(struct device
*d
,
3433 struct device_attribute
*attr
,
3434 const char *buf
, size_t count
)
3436 struct il_priv
*il
= dev_get_drvdata(d
);
3437 char *p
= (char *)buf
;
3440 il3945_dump_nic_error_log(il
);
3442 return strnlen(buf
, count
);
3445 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, il3945_dump_error_log
);
3447 /*****************************************************************************
3449 * driver setup and tear down
3451 *****************************************************************************/
3453 static void il3945_setup_deferred_work(struct il_priv
*il
)
3455 il
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3457 init_waitqueue_head(&il
->wait_command_queue
);
3459 INIT_WORK(&il
->restart
, il3945_bg_restart
);
3460 INIT_WORK(&il
->rx_replenish
, il3945_bg_rx_replenish
);
3461 INIT_DELAYED_WORK(&il
->init_alive_start
, il3945_bg_init_alive_start
);
3462 INIT_DELAYED_WORK(&il
->alive_start
, il3945_bg_alive_start
);
3463 INIT_DELAYED_WORK(&il
->_3945
.rfkill_poll
, il3945_rfkill_poll
);
3465 il_setup_scan_deferred_work(il
);
3467 il3945_hw_setup_deferred_work(il
);
3469 init_timer(&il
->watchdog
);
3470 il
->watchdog
.data
= (unsigned long)il
;
3471 il
->watchdog
.function
= il_bg_watchdog
;
3473 tasklet_init(&il
->irq_tasklet
, (void (*)(unsigned long))
3474 il3945_irq_tasklet
, (unsigned long)il
);
3477 static void il3945_cancel_deferred_work(struct il_priv
*il
)
3479 il3945_hw_cancel_deferred_work(il
);
3481 cancel_delayed_work_sync(&il
->init_alive_start
);
3482 cancel_delayed_work(&il
->alive_start
);
3484 il_cancel_scan_deferred_work(il
);
3487 static struct attribute
*il3945_sysfs_entries
[] = {
3488 &dev_attr_antenna
.attr
,
3489 &dev_attr_channels
.attr
,
3490 &dev_attr_dump_errors
.attr
,
3491 &dev_attr_flags
.attr
,
3492 &dev_attr_filter_flags
.attr
,
3493 &dev_attr_measurement
.attr
,
3494 &dev_attr_retry_rate
.attr
,
3495 &dev_attr_status
.attr
,
3496 &dev_attr_temperature
.attr
,
3497 &dev_attr_tx_power
.attr
,
3498 #ifdef CONFIG_IWLEGACY_DEBUG
3499 &dev_attr_debug_level
.attr
,
3504 static struct attribute_group il3945_attribute_group
= {
3505 .name
= NULL
, /* put in device directory */
3506 .attrs
= il3945_sysfs_entries
,
3509 struct ieee80211_ops il3945_hw_ops
= {
3510 .tx
= il3945_mac_tx
,
3511 .start
= il3945_mac_start
,
3512 .stop
= il3945_mac_stop
,
3513 .add_interface
= il_mac_add_interface
,
3514 .remove_interface
= il_mac_remove_interface
,
3515 .change_interface
= il_mac_change_interface
,
3516 .config
= il_mac_config
,
3517 .configure_filter
= il3945_configure_filter
,
3518 .set_key
= il3945_mac_set_key
,
3519 .conf_tx
= il_mac_conf_tx
,
3520 .reset_tsf
= il_mac_reset_tsf
,
3521 .bss_info_changed
= il_mac_bss_info_changed
,
3522 .hw_scan
= il_mac_hw_scan
,
3523 .sta_add
= il3945_mac_sta_add
,
3524 .sta_remove
= il_mac_sta_remove
,
3525 .tx_last_beacon
= il_mac_tx_last_beacon
,
3528 static int il3945_init_drv(struct il_priv
*il
)
3531 struct il3945_eeprom
*eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
3534 il
->beacon_skb
= NULL
;
3536 spin_lock_init(&il
->sta_lock
);
3537 spin_lock_init(&il
->hcmd_lock
);
3539 INIT_LIST_HEAD(&il
->free_frames
);
3541 mutex_init(&il
->mutex
);
3543 il
->ieee_channels
= NULL
;
3544 il
->ieee_rates
= NULL
;
3545 il
->band
= IEEE80211_BAND_2GHZ
;
3547 il
->iw_mode
= NL80211_IFTYPE_STATION
;
3548 il
->missed_beacon_threshold
= IL_MISSED_BEACON_THRESHOLD_DEF
;
3550 /* initialize force reset */
3551 il
->force_reset
.reset_duration
= IL_DELAY_NEXT_FORCE_FW_RELOAD
;
3553 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3554 IL_WARN("Unsupported EEPROM version: 0x%04X\n",
3559 ret
= il_init_channel_map(il
);
3561 IL_ERR("initializing regulatory failed: %d\n", ret
);
3565 /* Set up txpower settings in driver for all channels */
3566 if (il3945_txpower_set_from_eeprom(il
)) {
3568 goto err_free_channel_map
;
3571 ret
= il_init_geos(il
);
3573 IL_ERR("initializing geos failed: %d\n", ret
);
3574 goto err_free_channel_map
;
3576 il3945_init_hw_rates(il
, il
->ieee_rates
);
3580 err_free_channel_map
:
3581 il_free_channel_map(il
);
3586 #define IL3945_MAX_PROBE_REQUEST 200
3588 static int il3945_setup_mac(struct il_priv
*il
)
3591 struct ieee80211_hw
*hw
= il
->hw
;
3593 hw
->rate_control_algorithm
= "iwl-3945-rs";
3594 hw
->sta_data_size
= sizeof(struct il3945_sta_priv
);
3595 hw
->vif_data_size
= sizeof(struct il_vif_priv
);
3597 /* Tell mac80211 our characteristics */
3598 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
3599 IEEE80211_HW_SPECTRUM_MGMT
;
3601 hw
->wiphy
->interface_modes
=
3602 il
->ctx
.interface_modes
;
3604 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
3605 WIPHY_FLAG_DISABLE_BEACON_HINTS
|
3606 WIPHY_FLAG_IBSS_RSN
;
3608 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3609 /* we create the 802.11 header and a zero-length SSID element */
3610 hw
->wiphy
->max_scan_ie_len
= IL3945_MAX_PROBE_REQUEST
- 24 - 2;
3612 /* Default value; 4 EDCA QOS priorities */
3615 if (il
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3616 il
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3617 &il
->bands
[IEEE80211_BAND_2GHZ
];
3619 if (il
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3620 il
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3621 &il
->bands
[IEEE80211_BAND_5GHZ
];
3625 ret
= ieee80211_register_hw(il
->hw
);
3627 IL_ERR("Failed to register hw (error %d)\n", ret
);
3630 il
->mac80211_registered
= 1;
3635 static int il3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3639 struct ieee80211_hw
*hw
;
3640 struct il_cfg
*cfg
= (struct il_cfg
*)(ent
->driver_data
);
3641 struct il3945_eeprom
*eeprom
;
3642 unsigned long flags
;
3644 /***********************
3645 * 1. Allocating HW data
3646 * ********************/
3648 /* mac80211 allocates memory for this device instance, including
3649 * space for this driver's ilate structure */
3650 hw
= il_alloc_all(cfg
);
3652 pr_err("Can not allocate network device\n");
3657 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3659 il
->cmd_queue
= IL39_CMD_QUEUE_NUM
;
3663 il
->ctx
.rxon_cmd
= REPLY_RXON
;
3664 il
->ctx
.rxon_timing_cmd
= REPLY_RXON_TIMING
;
3665 il
->ctx
.rxon_assoc_cmd
= REPLY_RXON_ASSOC
;
3666 il
->ctx
.qos_cmd
= REPLY_QOS_PARAM
;
3667 il
->ctx
.ap_sta_id
= IL_AP_ID
;
3668 il
->ctx
.wep_key_cmd
= REPLY_WEPKEY
;
3669 il
->ctx
.interface_modes
=
3670 BIT(NL80211_IFTYPE_STATION
) |
3671 BIT(NL80211_IFTYPE_ADHOC
);
3672 il
->ctx
.ibss_devtype
= RXON_DEV_TYPE_IBSS
;
3673 il
->ctx
.station_devtype
= RXON_DEV_TYPE_ESS
;
3674 il
->ctx
.unused_devtype
= RXON_DEV_TYPE_ESS
;
3677 * Disabling hardware scan means that mac80211 will perform scans
3678 * "the hard way", rather than using device's scan.
3680 if (il3945_mod_params
.disable_hw_scan
) {
3681 D_INFO("Disabling hw_scan\n");
3682 il3945_hw_ops
.hw_scan
= NULL
;
3685 D_INFO("*** LOAD DRIVER ***\n");
3688 il
->inta_mask
= CSR_INI_SET_MASK
;
3690 if (il_alloc_traffic_mem(il
))
3691 IL_ERR("Not enough memory to generate traffic log\n");
3693 /***************************
3694 * 2. Initializing PCI bus
3695 * *************************/
3696 pci_disable_link_state(pdev
, PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
|
3697 PCIE_LINK_STATE_CLKPM
);
3699 if (pci_enable_device(pdev
)) {
3701 goto out_ieee80211_free_hw
;
3704 pci_set_master(pdev
);
3706 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3708 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3710 IL_WARN("No suitable DMA available.\n");
3711 goto out_pci_disable_device
;
3714 pci_set_drvdata(pdev
, il
);
3715 err
= pci_request_regions(pdev
, DRV_NAME
);
3717 goto out_pci_disable_device
;
3719 /***********************
3720 * 3. Read REV Register
3721 * ********************/
3722 il
->hw_base
= pci_iomap(pdev
, 0, 0);
3725 goto out_pci_release_regions
;
3728 D_INFO("pci_resource_len = 0x%08llx\n",
3729 (unsigned long long) pci_resource_len(pdev
, 0));
3730 D_INFO("pci_resource_base = %p\n", il
->hw_base
);
3732 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3733 * PCI Tx retries from interfering with C3 CPU state */
3734 pci_write_config_byte(pdev
, 0x41, 0x00);
3736 /* these spin locks will be used in apm_ops.init and EEPROM access
3737 * we should init now
3739 spin_lock_init(&il
->reg_lock
);
3740 spin_lock_init(&il
->lock
);
3743 * stop and reset the on-board processor just in case it is in a
3744 * strange state ... like being left stranded by a primary kernel
3745 * and this is now the kdump kernel trying to start up
3747 _il_wr(il
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
3749 /***********************
3751 * ********************/
3753 /* Read the EEPROM */
3754 err
= il_eeprom_init(il
);
3756 IL_ERR("Unable to init EEPROM\n");
3759 /* MAC Address location in EEPROM same for 3945/4965 */
3760 eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
3761 D_INFO("MAC address: %pM\n", eeprom
->mac_address
);
3762 SET_IEEE80211_PERM_ADDR(il
->hw
, eeprom
->mac_address
);
3764 /***********************
3765 * 5. Setup HW Constants
3766 * ********************/
3767 /* Device-specific setup */
3768 if (il3945_hw_set_hw_params(il
)) {
3769 IL_ERR("failed to set hw settings\n");
3770 goto out_eeprom_free
;
3773 /***********************
3775 * ********************/
3777 err
= il3945_init_drv(il
);
3779 IL_ERR("initializing driver failed\n");
3780 goto out_unset_hw_params
;
3783 IL_INFO("Detected Intel Wireless WiFi Link %s\n",
3786 /***********************
3788 * ********************/
3790 spin_lock_irqsave(&il
->lock
, flags
);
3791 il_disable_interrupts(il
);
3792 spin_unlock_irqrestore(&il
->lock
, flags
);
3794 pci_enable_msi(il
->pci_dev
);
3796 err
= request_irq(il
->pci_dev
->irq
, il_isr
,
3797 IRQF_SHARED
, DRV_NAME
, il
);
3799 IL_ERR("Error allocating IRQ %d\n", il
->pci_dev
->irq
);
3800 goto out_disable_msi
;
3803 err
= sysfs_create_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3805 IL_ERR("failed to create sysfs device attributes\n");
3806 goto out_release_irq
;
3809 il_set_rxon_channel(il
,
3810 &il
->bands
[IEEE80211_BAND_2GHZ
].channels
[5],
3812 il3945_setup_deferred_work(il
);
3813 il3945_setup_rx_handlers(il
);
3814 il_power_initialize(il
);
3816 /*********************************
3817 * 8. Setup and Register mac80211
3818 * *******************************/
3820 il_enable_interrupts(il
);
3822 err
= il3945_setup_mac(il
);
3824 goto out_remove_sysfs
;
3826 err
= il_dbgfs_register(il
, DRV_NAME
);
3828 IL_ERR("failed to create debugfs files. Ignoring error: %d\n", err
);
3830 /* Start monitoring the killswitch */
3831 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
,
3837 destroy_workqueue(il
->workqueue
);
3838 il
->workqueue
= NULL
;
3839 sysfs_remove_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3841 free_irq(il
->pci_dev
->irq
, il
);
3843 pci_disable_msi(il
->pci_dev
);
3845 il_free_channel_map(il
);
3846 out_unset_hw_params
:
3847 il3945_unset_hw_params(il
);
3851 pci_iounmap(pdev
, il
->hw_base
);
3852 out_pci_release_regions
:
3853 pci_release_regions(pdev
);
3854 out_pci_disable_device
:
3855 pci_set_drvdata(pdev
, NULL
);
3856 pci_disable_device(pdev
);
3857 out_ieee80211_free_hw
:
3858 il_free_traffic_mem(il
);
3859 ieee80211_free_hw(il
->hw
);
3864 static void __devexit
il3945_pci_remove(struct pci_dev
*pdev
)
3866 struct il_priv
*il
= pci_get_drvdata(pdev
);
3867 unsigned long flags
;
3872 D_INFO("*** UNLOAD DRIVER ***\n");
3874 il_dbgfs_unregister(il
);
3876 set_bit(STATUS_EXIT_PENDING
, &il
->status
);
3880 if (il
->mac80211_registered
) {
3881 ieee80211_unregister_hw(il
->hw
);
3882 il
->mac80211_registered
= 0;
3888 * Make sure device is reset to low power before unloading driver.
3889 * This may be redundant with il_down(), but there are paths to
3890 * run il_down() without calling apm_ops.stop(), and there are
3891 * paths to avoid running il_down() at all before leaving driver.
3892 * This (inexpensive) call *makes sure* device is reset.
3896 /* make sure we flush any pending irq or
3897 * tasklet for the driver
3899 spin_lock_irqsave(&il
->lock
, flags
);
3900 il_disable_interrupts(il
);
3901 spin_unlock_irqrestore(&il
->lock
, flags
);
3903 il3945_synchronize_irq(il
);
3905 sysfs_remove_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3907 cancel_delayed_work_sync(&il
->_3945
.rfkill_poll
);
3909 il3945_dealloc_ucode_pci(il
);
3912 il3945_rx_queue_free(il
, &il
->rxq
);
3913 il3945_hw_txq_ctx_free(il
);
3915 il3945_unset_hw_params(il
);
3917 /*netif_stop_queue(dev); */
3918 flush_workqueue(il
->workqueue
);
3920 /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes
3921 * il->workqueue... so we can't take down the workqueue
3923 destroy_workqueue(il
->workqueue
);
3924 il
->workqueue
= NULL
;
3925 il_free_traffic_mem(il
);
3927 free_irq(pdev
->irq
, il
);
3928 pci_disable_msi(pdev
);
3930 pci_iounmap(pdev
, il
->hw_base
);
3931 pci_release_regions(pdev
);
3932 pci_disable_device(pdev
);
3933 pci_set_drvdata(pdev
, NULL
);
3935 il_free_channel_map(il
);
3937 kfree(il
->scan_cmd
);
3939 dev_kfree_skb(il
->beacon_skb
);
3941 ieee80211_free_hw(il
->hw
);
3945 /*****************************************************************************
3947 * driver and module entry point
3949 *****************************************************************************/
3951 static struct pci_driver il3945_driver
= {
3953 .id_table
= il3945_hw_card_ids
,
3954 .probe
= il3945_pci_probe
,
3955 .remove
= __devexit_p(il3945_pci_remove
),
3956 .driver
.pm
= IL_LEGACY_PM_OPS
,
3959 static int __init
il3945_init(void)
3963 pr_info(DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3964 pr_info(DRV_COPYRIGHT
"\n");
3966 ret
= il3945_rate_control_register();
3968 pr_err("Unable to register rate control algorithm: %d\n", ret
);
3972 ret
= pci_register_driver(&il3945_driver
);
3974 pr_err("Unable to initialize PCI module\n");
3975 goto error_register
;
3981 il3945_rate_control_unregister();
3985 static void __exit
il3945_exit(void)
3987 pci_unregister_driver(&il3945_driver
);
3988 il3945_rate_control_unregister();
3991 MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX
));
3993 module_param_named(antenna
, il3945_mod_params
.antenna
, int, S_IRUGO
);
3994 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
3995 module_param_named(swcrypto
, il3945_mod_params
.sw_crypto
, int, S_IRUGO
);
3996 MODULE_PARM_DESC(swcrypto
,
3997 "using software crypto (default 1 [software])");
3998 module_param_named(disable_hw_scan
, il3945_mod_params
.disable_hw_scan
,
4000 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 1)");
4001 #ifdef CONFIG_IWLEGACY_DEBUG
4002 module_param_named(debug
, il_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4003 MODULE_PARM_DESC(debug
, "debug output mask");
4005 module_param_named(fw_restart
, il3945_mod_params
.restart_fw
, int, S_IRUGO
);
4006 MODULE_PARM_DESC(fw_restart
, "restart firmware in case of error");
4008 module_exit(il3945_exit
);
4009 module_init(il3945_init
);