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"
57 #include "iwl-spectrum.h"
60 * module name, copyright, version, etc.
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66 #ifdef CONFIG_IWLEGACY_DEBUG
73 * add "s" to indicate spectrum measurement included.
74 * we add it here to be consistent with previous releases in which
75 * this was configurable.
77 #define DRV_VERSION IWLWIFI_VERSION VD "s"
78 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
79 #define DRV_AUTHOR "<ilw@linux.intel.com>"
81 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
82 MODULE_VERSION(DRV_VERSION
);
83 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
84 MODULE_LICENSE("GPL");
86 /* module parameters */
87 struct il_mod_params il3945_mod_params
= {
91 /* the rest are 0 by default */
95 * il3945_get_antenna_flags - Get antenna flags for RXON command
96 * @il: eeprom and antenna fields are used to determine antenna flags
98 * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed
99 * il3945_mod_params.antenna specifies the antenna diversity mode:
101 * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
102 * IL_ANTENNA_MAIN - Force MAIN antenna
103 * IL_ANTENNA_AUX - Force AUX antenna
106 il3945_get_antenna_flags(const struct il_priv
*il
)
108 struct il3945_eeprom
*eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
110 switch (il3945_mod_params
.antenna
) {
111 case IL_ANTENNA_DIVERSITY
:
114 case IL_ANTENNA_MAIN
:
115 if (eeprom
->antenna_switch_type
)
116 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
117 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
120 if (eeprom
->antenna_switch_type
)
121 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_A_MSK
;
122 return RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_B_MSK
;
125 /* bad antenna selector value */
126 IL_ERR("Bad antenna selector value (0x%x)\n",
127 il3945_mod_params
.antenna
);
129 return 0; /* "diversity" is default if error */
133 il3945_set_ccmp_dynamic_key_info(struct il_priv
*il
,
134 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
137 __le16 key_flags
= 0;
140 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
141 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
143 if (sta_id
== il
->hw_params
.bcast_id
)
144 key_flags
|= STA_KEY_MULTICAST_MSK
;
146 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
147 keyconf
->hw_key_idx
= keyconf
->keyidx
;
148 key_flags
&= ~STA_KEY_FLG_INVALID
;
150 spin_lock_irqsave(&il
->sta_lock
, flags
);
151 il
->stations
[sta_id
].keyinfo
.cipher
= keyconf
->cipher
;
152 il
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
153 memcpy(il
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
, keyconf
->keylen
);
155 memcpy(il
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
, keyconf
->keylen
);
157 if ((il
->stations
[sta_id
].sta
.key
.
158 key_flags
& STA_KEY_FLG_ENCRYPT_MSK
) == STA_KEY_FLG_NO_ENC
)
159 il
->stations
[sta_id
].sta
.key
.key_offset
=
160 il_get_free_ucode_key_idx(il
);
161 /* else, we are overriding an existing key => no need to allocated room
164 WARN(il
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
165 "no space for a new key");
167 il
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
168 il
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
169 il
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
171 D_INFO("hwcrypto: modify ucode station key info\n");
173 ret
= il_send_add_sta(il
, &il
->stations
[sta_id
].sta
, CMD_ASYNC
);
175 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
181 il3945_set_tkip_dynamic_key_info(struct il_priv
*il
,
182 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
188 il3945_set_wep_dynamic_key_info(struct il_priv
*il
,
189 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
195 il3945_clear_sta_key_info(struct il_priv
*il
, u8 sta_id
)
198 struct il_addsta_cmd sta_cmd
;
200 spin_lock_irqsave(&il
->sta_lock
, flags
);
201 memset(&il
->stations
[sta_id
].keyinfo
, 0, sizeof(struct il_hw_key
));
202 memset(&il
->stations
[sta_id
].sta
.key
, 0, sizeof(struct il4965_keyinfo
));
203 il
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
204 il
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
205 il
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
206 memcpy(&sta_cmd
, &il
->stations
[sta_id
].sta
,
207 sizeof(struct il_addsta_cmd
));
208 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
210 D_INFO("hwcrypto: clear ucode station key info\n");
211 return il_send_add_sta(il
, &sta_cmd
, CMD_SYNC
);
215 il3945_set_dynamic_key(struct il_priv
*il
, struct ieee80211_key_conf
*keyconf
,
220 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
222 switch (keyconf
->cipher
) {
223 case WLAN_CIPHER_SUITE_CCMP
:
224 ret
= il3945_set_ccmp_dynamic_key_info(il
, keyconf
, sta_id
);
226 case WLAN_CIPHER_SUITE_TKIP
:
227 ret
= il3945_set_tkip_dynamic_key_info(il
, keyconf
, sta_id
);
229 case WLAN_CIPHER_SUITE_WEP40
:
230 case WLAN_CIPHER_SUITE_WEP104
:
231 ret
= il3945_set_wep_dynamic_key_info(il
, keyconf
, sta_id
);
234 IL_ERR("Unknown alg: %s alg=%x\n", __func__
, keyconf
->cipher
);
238 D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
239 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
, sta_id
, ret
);
245 il3945_remove_static_key(struct il_priv
*il
)
247 int ret
= -EOPNOTSUPP
;
253 il3945_set_static_key(struct il_priv
*il
, struct ieee80211_key_conf
*key
)
255 if (key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
256 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
)
259 IL_ERR("Static key invalid: cipher %x\n", key
->cipher
);
264 il3945_clear_free_frames(struct il_priv
*il
)
266 struct list_head
*element
;
268 D_INFO("%d frames on pre-allocated heap on clear.\n", il
->frames_count
);
270 while (!list_empty(&il
->free_frames
)) {
271 element
= il
->free_frames
.next
;
273 kfree(list_entry(element
, struct il3945_frame
, list
));
277 if (il
->frames_count
) {
278 IL_WARN("%d frames still in use. Did we lose one?\n",
280 il
->frames_count
= 0;
284 static struct il3945_frame
*
285 il3945_get_free_frame(struct il_priv
*il
)
287 struct il3945_frame
*frame
;
288 struct list_head
*element
;
289 if (list_empty(&il
->free_frames
)) {
290 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
292 IL_ERR("Could not allocate frame!\n");
300 element
= il
->free_frames
.next
;
302 return list_entry(element
, struct il3945_frame
, list
);
306 il3945_free_frame(struct il_priv
*il
, struct il3945_frame
*frame
)
308 memset(frame
, 0, sizeof(*frame
));
309 list_add(&frame
->list
, &il
->free_frames
);
313 il3945_fill_beacon_frame(struct il_priv
*il
, struct ieee80211_hdr
*hdr
,
317 if (!il_is_associated(il
) || !il
->beacon_skb
)
320 if (il
->beacon_skb
->len
> left
)
323 memcpy(hdr
, il
->beacon_skb
->data
, il
->beacon_skb
->len
);
325 return il
->beacon_skb
->len
;
329 il3945_send_beacon_cmd(struct il_priv
*il
)
331 struct il3945_frame
*frame
;
332 unsigned int frame_size
;
336 frame
= il3945_get_free_frame(il
);
339 IL_ERR("Could not obtain free frame buffer for beacon "
344 rate
= il_get_lowest_plcp(il
);
346 frame_size
= il3945_hw_get_beacon_cmd(il
, frame
, rate
);
348 rc
= il_send_cmd_pdu(il
, C_TX_BEACON
, frame_size
, &frame
->u
.cmd
[0]);
350 il3945_free_frame(il
, frame
);
356 il3945_unset_hw_params(struct il_priv
*il
)
358 if (il
->_3945
.shared_virt
)
359 dma_free_coherent(&il
->pci_dev
->dev
,
360 sizeof(struct il3945_shared
),
361 il
->_3945
.shared_virt
, il
->_3945
.shared_phys
);
365 il3945_build_tx_cmd_hwcrypto(struct il_priv
*il
, struct ieee80211_tx_info
*info
,
366 struct il_device_cmd
*cmd
,
367 struct sk_buff
*skb_frag
, int sta_id
)
369 struct il3945_tx_cmd
*tx_cmd
= (struct il3945_tx_cmd
*)cmd
->cmd
.payload
;
370 struct il_hw_key
*keyinfo
= &il
->stations
[sta_id
].keyinfo
;
374 switch (keyinfo
->cipher
) {
375 case WLAN_CIPHER_SUITE_CCMP
:
376 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
377 memcpy(tx_cmd
->key
, keyinfo
->key
, keyinfo
->keylen
);
378 D_TX("tx_cmd with AES hwcrypto\n");
381 case WLAN_CIPHER_SUITE_TKIP
:
384 case WLAN_CIPHER_SUITE_WEP104
:
385 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
387 case WLAN_CIPHER_SUITE_WEP40
:
389 TX_CMD_SEC_WEP
| (info
->control
.hw_key
->
390 hw_key_idx
& TX_CMD_SEC_MSK
) <<
393 memcpy(&tx_cmd
->key
[3], keyinfo
->key
, keyinfo
->keylen
);
395 D_TX("Configuring packet for WEP encryption " "with key %d\n",
396 info
->control
.hw_key
->hw_key_idx
);
400 IL_ERR("Unknown encode cipher %x\n", keyinfo
->cipher
);
406 * handle build C_TX command notification.
409 il3945_build_tx_cmd_basic(struct il_priv
*il
, struct il_device_cmd
*cmd
,
410 struct ieee80211_tx_info
*info
,
411 struct ieee80211_hdr
*hdr
, u8 std_id
)
413 struct il3945_tx_cmd
*tx_cmd
= (struct il3945_tx_cmd
*)cmd
->cmd
.payload
;
414 __le32 tx_flags
= tx_cmd
->tx_flags
;
415 __le16 fc
= hdr
->frame_control
;
417 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
418 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
419 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
420 if (ieee80211_is_mgmt(fc
))
421 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
422 if (ieee80211_is_probe_resp(fc
) &&
423 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
424 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
426 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
427 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
430 tx_cmd
->sta_id
= std_id
;
431 if (ieee80211_has_morefrags(fc
))
432 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
434 if (ieee80211_is_data_qos(fc
)) {
435 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
436 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
437 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
439 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
442 il_tx_cmd_protection(il
, info
, fc
, &tx_flags
);
444 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
445 if (ieee80211_is_mgmt(fc
)) {
446 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
447 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
449 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
451 tx_cmd
->timeout
.pm_frame_timeout
= 0;
454 tx_cmd
->driver_txop
= 0;
455 tx_cmd
->tx_flags
= tx_flags
;
456 tx_cmd
->next_frame_len
= 0;
460 * start C_TX command process
463 il3945_tx_skb(struct il_priv
*il
, struct sk_buff
*skb
)
465 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
466 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
467 struct il3945_tx_cmd
*tx_cmd
;
468 struct il_tx_queue
*txq
= NULL
;
469 struct il_queue
*q
= NULL
;
470 struct il_device_cmd
*out_cmd
;
471 struct il_cmd_meta
*out_meta
;
472 dma_addr_t phys_addr
;
473 dma_addr_t txcmd_phys
;
474 int txq_id
= skb_get_queue_mapping(skb
);
475 u16 len
, idx
, hdr_len
;
481 u8 wait_write_ptr
= 0;
484 spin_lock_irqsave(&il
->lock
, flags
);
485 if (il_is_rfkill(il
)) {
486 D_DROP("Dropping - RF KILL\n");
490 if ((ieee80211_get_tx_rate(il
->hw
, info
)->hw_value
& 0xFF) ==
492 IL_ERR("ERROR: No TX rate available.\n");
496 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
499 fc
= hdr
->frame_control
;
501 #ifdef CONFIG_IWLEGACY_DEBUG
502 if (ieee80211_is_auth(fc
))
503 D_TX("Sending AUTH frame\n");
504 else if (ieee80211_is_assoc_req(fc
))
505 D_TX("Sending ASSOC frame\n");
506 else if (ieee80211_is_reassoc_req(fc
))
507 D_TX("Sending REASSOC frame\n");
510 spin_unlock_irqrestore(&il
->lock
, flags
);
512 hdr_len
= ieee80211_hdrlen(fc
);
514 /* Find idx into station table for destination station */
515 sta_id
= il_sta_id_or_broadcast(il
, info
->control
.sta
);
516 if (sta_id
== IL_INVALID_STATION
) {
517 D_DROP("Dropping - INVALID STATION: %pM\n", hdr
->addr1
);
521 D_RATE("station Id %d\n", sta_id
);
523 if (ieee80211_is_data_qos(fc
)) {
524 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
525 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
526 if (unlikely(tid
>= MAX_TID_COUNT
))
530 /* Descriptor for chosen Tx queue */
531 txq
= &il
->txq
[txq_id
];
534 if ((il_queue_space(q
) < q
->high_mark
))
537 spin_lock_irqsave(&il
->lock
, flags
);
539 idx
= il_get_cmd_idx(q
, q
->write_ptr
, 0);
541 txq
->skbs
[q
->write_ptr
] = skb
;
543 /* Init first empty entry in queue's array of Tx/cmd buffers */
544 out_cmd
= txq
->cmd
[idx
];
545 out_meta
= &txq
->meta
[idx
];
546 tx_cmd
= (struct il3945_tx_cmd
*)out_cmd
->cmd
.payload
;
547 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
548 memset(tx_cmd
, 0, sizeof(*tx_cmd
));
551 * Set up the Tx-command (not MAC!) header.
552 * Store the chosen Tx queue and TFD idx within the sequence field;
553 * after Tx, uCode's Tx response will return this value so driver can
554 * locate the frame within the tx queue and do post-tx processing.
556 out_cmd
->hdr
.cmd
= C_TX
;
557 out_cmd
->hdr
.sequence
=
559 (QUEUE_TO_SEQ(txq_id
) | IDX_TO_SEQ(q
->write_ptr
)));
561 /* Copy MAC header from skb into command buffer */
562 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
564 if (info
->control
.hw_key
)
565 il3945_build_tx_cmd_hwcrypto(il
, info
, out_cmd
, skb
, sta_id
);
567 /* TODO need this for burst mode later on */
568 il3945_build_tx_cmd_basic(il
, out_cmd
, info
, hdr
, sta_id
);
570 il3945_hw_build_tx_cmd_rate(il
, out_cmd
, info
, hdr
, sta_id
);
572 /* Total # bytes to be transmitted */
573 len
= (u16
) skb
->len
;
574 tx_cmd
->len
= cpu_to_le16(len
);
576 il_update_stats(il
, true, fc
, len
);
577 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
578 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
580 if (!ieee80211_has_morefrags(hdr
->frame_control
)) {
581 txq
->need_update
= 1;
584 txq
->need_update
= 0;
587 D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd
->hdr
.sequence
));
588 D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd
->tx_flags
));
589 il_print_hex_dump(il
, IL_DL_TX
, tx_cmd
, sizeof(*tx_cmd
));
590 il_print_hex_dump(il
, IL_DL_TX
, (u8
*) tx_cmd
->hdr
,
591 ieee80211_hdrlen(fc
));
594 * Use the first empty entry in this queue's command buffer array
595 * to contain the Tx command and MAC header concatenated together
596 * (payload data will be in another buffer).
597 * Size of this varies, due to varying MAC header length.
598 * If end is not dword aligned, we'll have 2 extra bytes at the end
599 * of the MAC header (device reads on dword boundaries).
600 * We'll tell device about this padding later.
603 sizeof(struct il3945_tx_cmd
) + sizeof(struct il_cmd_header
) +
605 len
= (len
+ 3) & ~3;
607 /* Physical address of this Tx command's header (not MAC header!),
608 * within command buffer array. */
610 pci_map_single(il
->pci_dev
, &out_cmd
->hdr
, len
, PCI_DMA_TODEVICE
);
611 /* we do not map meta data ... so we can safely access address to
612 * provide to unmap command*/
613 dma_unmap_addr_set(out_meta
, mapping
, txcmd_phys
);
614 dma_unmap_len_set(out_meta
, len
, len
);
616 /* Add buffer containing Tx command and MAC(!) header to TFD's
618 il
->ops
->txq_attach_buf_to_tfd(il
, txq
, txcmd_phys
, len
, 1, 0);
620 /* Set up TFD's 2nd entry to point directly to remainder of skb,
621 * if any (802.11 null frames have no payload). */
622 len
= skb
->len
- hdr_len
;
625 pci_map_single(il
->pci_dev
, skb
->data
+ hdr_len
, len
,
627 il
->ops
->txq_attach_buf_to_tfd(il
, txq
, phys_addr
, len
, 0,
631 /* Tell device the write idx *just past* this latest filled TFD */
632 q
->write_ptr
= il_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
633 il_txq_update_write_ptr(il
, txq
);
634 spin_unlock_irqrestore(&il
->lock
, flags
);
636 if (il_queue_space(q
) < q
->high_mark
&& il
->mac80211_registered
) {
637 if (wait_write_ptr
) {
638 spin_lock_irqsave(&il
->lock
, flags
);
639 txq
->need_update
= 1;
640 il_txq_update_write_ptr(il
, txq
);
641 spin_unlock_irqrestore(&il
->lock
, flags
);
644 il_stop_queue(il
, txq
);
650 spin_unlock_irqrestore(&il
->lock
, flags
);
656 il3945_get_measurement(struct il_priv
*il
,
657 struct ieee80211_measurement_params
*params
, u8 type
)
659 struct il_spectrum_cmd spectrum
;
660 struct il_rx_pkt
*pkt
;
661 struct il_host_cmd cmd
= {
662 .id
= C_SPECTRUM_MEASUREMENT
,
663 .data
= (void *)&spectrum
,
664 .flags
= CMD_WANT_SKB
,
666 u32 add_time
= le64_to_cpu(params
->start_time
);
668 int spectrum_resp_status
;
669 int duration
= le16_to_cpu(params
->duration
);
671 if (il_is_associated(il
))
673 il_usecs_to_beacons(il
,
674 le64_to_cpu(params
->start_time
) -
676 le16_to_cpu(il
->timing
.beacon_interval
));
678 memset(&spectrum
, 0, sizeof(spectrum
));
680 spectrum
.channel_count
= cpu_to_le16(1);
682 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
683 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
684 cmd
.len
= sizeof(spectrum
);
685 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
687 if (il_is_associated(il
))
688 spectrum
.start_time
=
689 il_add_beacon_time(il
, il
->_3945
.last_beacon_time
, add_time
,
690 le16_to_cpu(il
->timing
.beacon_interval
));
692 spectrum
.start_time
= 0;
694 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
695 spectrum
.channels
[0].channel
= params
->channel
;
696 spectrum
.channels
[0].type
= type
;
697 if (il
->active
.flags
& RXON_FLG_BAND_24G_MSK
)
699 RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
|
700 RXON_FLG_TGG_PROTECT_MSK
;
702 rc
= il_send_cmd_sync(il
, &cmd
);
706 pkt
= (struct il_rx_pkt
*)cmd
.reply_page
;
707 if (pkt
->hdr
.flags
& IL_CMD_FAILED_MSK
) {
708 IL_ERR("Bad return from N_RX_ON_ASSOC command\n");
712 spectrum_resp_status
= le16_to_cpu(pkt
->u
.spectrum
.status
);
713 switch (spectrum_resp_status
) {
714 case 0: /* Command will be handled */
715 if (pkt
->u
.spectrum
.id
!= 0xff) {
716 D_INFO("Replaced existing measurement: %d\n",
718 il
->measurement_status
&= ~MEASUREMENT_READY
;
720 il
->measurement_status
|= MEASUREMENT_ACTIVE
;
724 case 1: /* Command will not be handled */
729 il_free_pages(il
, cmd
.reply_page
);
735 il3945_hdl_alive(struct il_priv
*il
, struct il_rx_buf
*rxb
)
737 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
738 struct il_alive_resp
*palive
;
739 struct delayed_work
*pwork
;
741 palive
= &pkt
->u
.alive_frame
;
743 D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n",
744 palive
->is_valid
, palive
->ver_type
, palive
->ver_subtype
);
746 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
747 D_INFO("Initialization Alive received.\n");
748 memcpy(&il
->card_alive_init
, &pkt
->u
.alive_frame
,
749 sizeof(struct il_alive_resp
));
750 pwork
= &il
->init_alive_start
;
752 D_INFO("Runtime Alive received.\n");
753 memcpy(&il
->card_alive
, &pkt
->u
.alive_frame
,
754 sizeof(struct il_alive_resp
));
755 pwork
= &il
->alive_start
;
756 il3945_disable_events(il
);
759 /* We delay the ALIVE response by 5ms to
760 * give the HW RF Kill time to activate... */
761 if (palive
->is_valid
== UCODE_VALID_OK
)
762 queue_delayed_work(il
->workqueue
, pwork
, msecs_to_jiffies(5));
764 IL_WARN("uCode did not respond OK.\n");
768 il3945_hdl_add_sta(struct il_priv
*il
, struct il_rx_buf
*rxb
)
770 #ifdef CONFIG_IWLEGACY_DEBUG
771 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
774 D_RX("Received C_ADD_STA: 0x%02X\n", pkt
->u
.status
);
778 il3945_hdl_beacon(struct il_priv
*il
, struct il_rx_buf
*rxb
)
780 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
781 struct il3945_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
782 #ifdef CONFIG_IWLEGACY_DEBUG
783 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
785 D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n",
786 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
787 beacon
->beacon_notify_hdr
.failure_frame
,
788 le32_to_cpu(beacon
->ibss_mgr_status
),
789 le32_to_cpu(beacon
->high_tsf
), le32_to_cpu(beacon
->low_tsf
), rate
);
792 il
->ibss_manager
= le32_to_cpu(beacon
->ibss_mgr_status
);
796 /* Handle notification from uCode that card's power state is changing
797 * due to software, hardware, or critical temperature RFKILL */
799 il3945_hdl_card_state(struct il_priv
*il
, struct il_rx_buf
*rxb
)
801 struct il_rx_pkt
*pkt
= rxb_addr(rxb
);
802 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
803 unsigned long status
= il
->status
;
805 IL_WARN("Card state received: HW:%s SW:%s\n",
806 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
807 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
809 _il_wr(il
, CSR_UCODE_DRV_GP1_SET
, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
811 if (flags
& HW_CARD_DISABLED
)
812 set_bit(S_RFKILL
, &il
->status
);
814 clear_bit(S_RFKILL
, &il
->status
);
818 if ((test_bit(S_RFKILL
, &status
) !=
819 test_bit(S_RFKILL
, &il
->status
)))
820 wiphy_rfkill_set_hw_state(il
->hw
->wiphy
,
821 test_bit(S_RFKILL
, &il
->status
));
823 wake_up(&il
->wait_command_queue
);
827 * il3945_setup_handlers - Initialize Rx handler callbacks
829 * Setup the RX handlers for each of the reply types sent from the uCode
832 * This function chains into the hardware specific files for them to setup
833 * any hardware specific handlers as well.
836 il3945_setup_handlers(struct il_priv
*il
)
838 il
->handlers
[N_ALIVE
] = il3945_hdl_alive
;
839 il
->handlers
[C_ADD_STA
] = il3945_hdl_add_sta
;
840 il
->handlers
[N_ERROR
] = il_hdl_error
;
841 il
->handlers
[N_CHANNEL_SWITCH
] = il_hdl_csa
;
842 il
->handlers
[N_SPECTRUM_MEASUREMENT
] = il_hdl_spectrum_measurement
;
843 il
->handlers
[N_PM_SLEEP
] = il_hdl_pm_sleep
;
844 il
->handlers
[N_PM_DEBUG_STATS
] = il_hdl_pm_debug_stats
;
845 il
->handlers
[N_BEACON
] = il3945_hdl_beacon
;
848 * The same handler is used for both the REPLY to a discrete
849 * stats request from the host as well as for the periodic
850 * stats notifications (after received beacons) from the uCode.
852 il
->handlers
[C_STATS
] = il3945_hdl_c_stats
;
853 il
->handlers
[N_STATS
] = il3945_hdl_stats
;
855 il_setup_rx_scan_handlers(il
);
856 il
->handlers
[N_CARD_STATE
] = il3945_hdl_card_state
;
858 /* Set up hardware specific Rx handlers */
859 il3945_hw_handler_setup(il
);
862 /************************** RX-FUNCTIONS ****************************/
864 * Rx theory of operation
866 * The host allocates 32 DMA target addresses and passes the host address
867 * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is
871 * The host/firmware share two idx registers for managing the Rx buffers.
873 * The READ idx maps to the first position that the firmware may be writing
874 * to -- the driver can read up to (but not including) this position and get
876 * The READ idx is managed by the firmware once the card is enabled.
878 * The WRITE idx maps to the last position the driver has read from -- the
879 * position preceding WRITE is the last slot the firmware can place a packet.
881 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
884 * During initialization, the host sets up the READ queue position to the first
885 * IDX position, and WRITE to the last (READ - 1 wrapped)
887 * When the firmware places a packet in a buffer, it will advance the READ idx
888 * and fire the RX interrupt. The driver can then query the READ idx and
889 * process as many packets as possible, moving the WRITE idx forward as it
890 * resets the Rx queue buffers with new memory.
892 * The management in the driver is as follows:
893 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
894 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
895 * to replenish the iwl->rxq->rx_free.
896 * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the
897 * iwl->rxq is replenished and the READ IDX is updated (updating the
898 * 'processed' and 'read' driver idxes as well)
899 * + A received packet is processed and handed to the kernel network stack,
900 * detached from the iwl->rxq. The driver 'processed' idx is updated.
901 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
902 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
903 * IDX is not incremented and iwl->status(RX_STALLED) is set. If there
904 * were enough free buffers and RX_STALLED is set it is cleared.
909 * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
910 * il3945_rx_queue_restock
911 * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx
912 * queue, updates firmware pointers, and updates
913 * the WRITE idx. If insufficient rx_free buffers
914 * are available, schedules il3945_rx_replenish
916 * -- enable interrupts --
917 * ISR - il3945_rx() Detach il_rx_bufs from pool up to the
918 * READ IDX, detaching the SKB from the pool.
919 * Moves the packet buffer from queue to rx_used.
920 * Calls il3945_rx_queue_restock to refill any empty
927 * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
930 il3945_dma_addr2rbd_ptr(struct il_priv
*il
, dma_addr_t dma_addr
)
932 return cpu_to_le32((u32
) dma_addr
);
936 * il3945_rx_queue_restock - refill RX queue from pre-allocated pool
938 * If there are slots in the RX queue that need to be restocked,
939 * and we have free pre-allocated buffers, fill the ranks as much
940 * as we can, pulling from rx_free.
942 * This moves the 'write' idx forward to catch up with 'processed', and
943 * also updates the memory address in the firmware to reference the new
947 il3945_rx_queue_restock(struct il_priv
*il
)
949 struct il_rx_queue
*rxq
= &il
->rxq
;
950 struct list_head
*element
;
951 struct il_rx_buf
*rxb
;
955 spin_lock_irqsave(&rxq
->lock
, flags
);
956 write
= rxq
->write
& ~0x7;
957 while (il_rx_queue_space(rxq
) > 0 && rxq
->free_count
) {
958 /* Get next free Rx buffer, remove from free list */
959 element
= rxq
->rx_free
.next
;
960 rxb
= list_entry(element
, struct il_rx_buf
, list
);
963 /* Point to Rx buffer via next RBD in circular buffer */
964 rxq
->bd
[rxq
->write
] =
965 il3945_dma_addr2rbd_ptr(il
, rxb
->page_dma
);
966 rxq
->queue
[rxq
->write
] = rxb
;
967 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
970 spin_unlock_irqrestore(&rxq
->lock
, flags
);
971 /* If the pre-allocated buffer pool is dropping low, schedule to
973 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
974 queue_work(il
->workqueue
, &il
->rx_replenish
);
976 /* If we've added more space for the firmware to place data, tell it.
977 * Increment device's write pointer in multiples of 8. */
978 if (rxq
->write_actual
!= (rxq
->write
& ~0x7) ||
979 abs(rxq
->write
- rxq
->read
) > 7) {
980 spin_lock_irqsave(&rxq
->lock
, flags
);
981 rxq
->need_update
= 1;
982 spin_unlock_irqrestore(&rxq
->lock
, flags
);
983 il_rx_queue_update_write_ptr(il
, rxq
);
988 * il3945_rx_replenish - Move all used packet from rx_used to rx_free
990 * When moving to rx_free an SKB is allocated for the slot.
992 * Also restock the Rx queue via il3945_rx_queue_restock.
993 * This is called as a scheduled work item (except for during initialization)
996 il3945_rx_allocate(struct il_priv
*il
, gfp_t priority
)
998 struct il_rx_queue
*rxq
= &il
->rxq
;
999 struct list_head
*element
;
1000 struct il_rx_buf
*rxb
;
1002 unsigned long flags
;
1003 gfp_t gfp_mask
= priority
;
1006 spin_lock_irqsave(&rxq
->lock
, flags
);
1008 if (list_empty(&rxq
->rx_used
)) {
1009 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1012 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1014 if (rxq
->free_count
> RX_LOW_WATERMARK
)
1015 gfp_mask
|= __GFP_NOWARN
;
1017 if (il
->hw_params
.rx_page_order
> 0)
1018 gfp_mask
|= __GFP_COMP
;
1020 /* Alloc a new receive buffer */
1021 page
= alloc_pages(gfp_mask
, il
->hw_params
.rx_page_order
);
1023 if (net_ratelimit())
1024 D_INFO("Failed to allocate SKB buffer.\n");
1025 if (rxq
->free_count
<= RX_LOW_WATERMARK
&&
1027 IL_ERR("Failed to allocate SKB buffer with %0x."
1028 "Only %u free buffers remaining.\n",
1029 priority
, rxq
->free_count
);
1030 /* We don't reschedule replenish work here -- we will
1031 * call the restock method and if it still needs
1032 * more buffers it will schedule replenish */
1036 spin_lock_irqsave(&rxq
->lock
, flags
);
1037 if (list_empty(&rxq
->rx_used
)) {
1038 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1039 __free_pages(page
, il
->hw_params
.rx_page_order
);
1042 element
= rxq
->rx_used
.next
;
1043 rxb
= list_entry(element
, struct il_rx_buf
, list
);
1045 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1048 /* Get physical address of RB/SKB */
1050 pci_map_page(il
->pci_dev
, page
, 0,
1051 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1052 PCI_DMA_FROMDEVICE
);
1054 spin_lock_irqsave(&rxq
->lock
, flags
);
1056 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1058 il
->alloc_rxb_page
++;
1060 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1065 il3945_rx_queue_reset(struct il_priv
*il
, struct il_rx_queue
*rxq
)
1067 unsigned long flags
;
1069 spin_lock_irqsave(&rxq
->lock
, flags
);
1070 INIT_LIST_HEAD(&rxq
->rx_free
);
1071 INIT_LIST_HEAD(&rxq
->rx_used
);
1072 /* Fill the rx_used queue with _all_ of the Rx buffers */
1073 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
1074 /* In the reset function, these buffers may have been allocated
1075 * to an SKB, so we need to unmap and free potential storage */
1076 if (rxq
->pool
[i
].page
!= NULL
) {
1077 pci_unmap_page(il
->pci_dev
, rxq
->pool
[i
].page_dma
,
1078 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1079 PCI_DMA_FROMDEVICE
);
1080 __il_free_pages(il
, rxq
->pool
[i
].page
);
1081 rxq
->pool
[i
].page
= NULL
;
1083 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
1086 /* Set us so that we have processed and used all buffers, but have
1087 * not restocked the Rx queue with fresh buffers */
1088 rxq
->read
= rxq
->write
= 0;
1089 rxq
->write_actual
= 0;
1090 rxq
->free_count
= 0;
1091 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1095 il3945_rx_replenish(void *data
)
1097 struct il_priv
*il
= data
;
1098 unsigned long flags
;
1100 il3945_rx_allocate(il
, GFP_KERNEL
);
1102 spin_lock_irqsave(&il
->lock
, flags
);
1103 il3945_rx_queue_restock(il
);
1104 spin_unlock_irqrestore(&il
->lock
, flags
);
1108 il3945_rx_replenish_now(struct il_priv
*il
)
1110 il3945_rx_allocate(il
, GFP_ATOMIC
);
1112 il3945_rx_queue_restock(il
);
1115 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1116 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1117 * This free routine walks the list of POOL entries and if SKB is set to
1118 * non NULL it is unmapped and freed
1121 il3945_rx_queue_free(struct il_priv
*il
, struct il_rx_queue
*rxq
)
1124 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
1125 if (rxq
->pool
[i
].page
!= NULL
) {
1126 pci_unmap_page(il
->pci_dev
, rxq
->pool
[i
].page_dma
,
1127 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1128 PCI_DMA_FROMDEVICE
);
1129 __il_free_pages(il
, rxq
->pool
[i
].page
);
1130 rxq
->pool
[i
].page
= NULL
;
1134 dma_free_coherent(&il
->pci_dev
->dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
1136 dma_free_coherent(&il
->pci_dev
->dev
, sizeof(struct il_rb_status
),
1137 rxq
->rb_stts
, rxq
->rb_stts_dma
);
1139 rxq
->rb_stts
= NULL
;
1142 /* Convert linear signal-to-noise ratio into dB */
1143 static u8 ratio2dB
[100] = {
1144 /* 0 1 2 3 4 5 6 7 8 9 */
1145 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1146 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1147 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1148 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1149 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1150 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1151 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1152 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1153 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1154 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1157 /* Calculates a relative dB value from a ratio of linear
1158 * (i.e. not dB) signal levels.
1159 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1161 il3945_calc_db_from_ratio(int sig_ratio
)
1163 /* 1000:1 or higher just report as 60 dB */
1164 if (sig_ratio
>= 1000)
1167 /* 100:1 or higher, divide by 10 and use table,
1168 * add 20 dB to make up for divide by 10 */
1169 if (sig_ratio
>= 100)
1170 return 20 + (int)ratio2dB
[sig_ratio
/ 10];
1172 /* We shouldn't see this */
1176 /* Use table for ratios 1:1 - 99:1 */
1177 return (int)ratio2dB
[sig_ratio
];
1181 * il3945_rx_handle - Main entry function for receiving responses from uCode
1183 * Uses the il->handlers callback function array to invoke
1184 * the appropriate handlers, including command responses,
1185 * frame-received notifications, and other notifications.
1188 il3945_rx_handle(struct il_priv
*il
)
1190 struct il_rx_buf
*rxb
;
1191 struct il_rx_pkt
*pkt
;
1192 struct il_rx_queue
*rxq
= &il
->rxq
;
1195 unsigned long flags
;
1198 int total_empty
= 0;
1200 /* uCode's read idx (stored in shared DRAM) indicates the last Rx
1201 * buffer that the driver may process (last buffer filled by ucode). */
1202 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
1205 /* calculate total frames need to be restock after handling RX */
1206 total_empty
= r
- rxq
->write_actual
;
1207 if (total_empty
< 0)
1208 total_empty
+= RX_QUEUE_SIZE
;
1210 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
1212 /* Rx interrupt, but nothing sent from uCode */
1214 D_RX("r = %d, i = %d\n", r
, i
);
1219 rxb
= rxq
->queue
[i
];
1221 /* If an RXB doesn't have a Rx queue slot associated with it,
1222 * then a bug has been introduced in the queue refilling
1223 * routines -- catch it here */
1224 BUG_ON(rxb
== NULL
);
1226 rxq
->queue
[i
] = NULL
;
1228 pci_unmap_page(il
->pci_dev
, rxb
->page_dma
,
1229 PAGE_SIZE
<< il
->hw_params
.rx_page_order
,
1230 PCI_DMA_FROMDEVICE
);
1231 pkt
= rxb_addr(rxb
);
1233 len
= le32_to_cpu(pkt
->len_n_flags
) & IL_RX_FRAME_SIZE_MSK
;
1234 len
+= sizeof(u32
); /* account for status word */
1236 /* Reclaim a command buffer only if this packet is a response
1237 * to a (driver-originated) command.
1238 * If the packet (e.g. Rx frame) originated from uCode,
1239 * there is no command buffer to reclaim.
1240 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1241 * but apparently a few don't get set; catch them here. */
1242 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1243 pkt
->hdr
.cmd
!= N_STATS
&& pkt
->hdr
.cmd
!= C_TX
;
1245 /* Based on type of command response or notification,
1246 * handle those that need handling via function in
1247 * handlers table. See il3945_setup_handlers() */
1248 if (il
->handlers
[pkt
->hdr
.cmd
]) {
1249 D_RX("r = %d, i = %d, %s, 0x%02x\n", r
, i
,
1250 il_get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1251 il
->isr_stats
.handlers
[pkt
->hdr
.cmd
]++;
1252 il
->handlers
[pkt
->hdr
.cmd
] (il
, rxb
);
1254 /* No handling needed */
1255 D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r
,
1256 i
, il_get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1260 * XXX: After here, we should always check rxb->page
1261 * against NULL before touching it or its virtual
1262 * memory (pkt). Because some handler might have
1263 * already taken or freed the pages.
1267 /* Invoke any callbacks, transfer the buffer to caller,
1268 * and fire off the (possibly) blocking il_send_cmd()
1269 * as we reclaim the driver command queue */
1271 il_tx_cmd_complete(il
, rxb
);
1273 IL_WARN("Claim null rxb?\n");
1276 /* Reuse the page if possible. For notification packets and
1277 * SKBs that fail to Rx correctly, add them back into the
1278 * rx_free list for reuse later. */
1279 spin_lock_irqsave(&rxq
->lock
, flags
);
1280 if (rxb
->page
!= NULL
) {
1282 pci_map_page(il
->pci_dev
, rxb
->page
, 0,
1283 PAGE_SIZE
<< il
->hw_params
.
1284 rx_page_order
, PCI_DMA_FROMDEVICE
);
1285 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1288 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1290 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1292 i
= (i
+ 1) & RX_QUEUE_MASK
;
1293 /* If there are a lot of unused frames,
1294 * restock the Rx queue so ucode won't assert. */
1299 il3945_rx_replenish_now(il
);
1305 /* Backtrack one entry */
1308 il3945_rx_replenish_now(il
);
1310 il3945_rx_queue_restock(il
);
1313 /* call this function to flush any scheduled tasklet */
1315 il3945_synchronize_irq(struct il_priv
*il
)
1317 /* wait to make sure we flush pending tasklet */
1318 synchronize_irq(il
->pci_dev
->irq
);
1319 tasklet_kill(&il
->irq_tasklet
);
1323 il3945_desc_lookup(int i
)
1331 return "BAD_CHECKSUM";
1333 return "NMI_INTERRUPT";
1337 return "FATAL_ERROR";
1343 #define ERROR_START_OFFSET (1 * sizeof(u32))
1344 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1347 il3945_dump_nic_error_log(struct il_priv
*il
)
1350 u32 desc
, time
, count
, base
, data1
;
1351 u32 blink1
, blink2
, ilink1
, ilink2
;
1353 base
= le32_to_cpu(il
->card_alive
.error_event_table_ptr
);
1355 if (!il3945_hw_valid_rtc_data_addr(base
)) {
1356 IL_ERR("Not valid error log pointer 0x%08X\n", base
);
1360 count
= il_read_targ_mem(il
, base
);
1362 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
1363 IL_ERR("Start IWL Error Log Dump:\n");
1364 IL_ERR("Status: 0x%08lX, count: %d\n", il
->status
, count
);
1367 IL_ERR("Desc Time asrtPC blink2 "
1368 "ilink1 nmiPC Line\n");
1369 for (i
= ERROR_START_OFFSET
;
1370 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
1371 i
+= ERROR_ELEM_SIZE
) {
1372 desc
= il_read_targ_mem(il
, base
+ i
);
1373 time
= il_read_targ_mem(il
, base
+ i
+ 1 * sizeof(u32
));
1374 blink1
= il_read_targ_mem(il
, base
+ i
+ 2 * sizeof(u32
));
1375 blink2
= il_read_targ_mem(il
, base
+ i
+ 3 * sizeof(u32
));
1376 ilink1
= il_read_targ_mem(il
, base
+ i
+ 4 * sizeof(u32
));
1377 ilink2
= il_read_targ_mem(il
, base
+ i
+ 5 * sizeof(u32
));
1378 data1
= il_read_targ_mem(il
, base
+ i
+ 6 * sizeof(u32
));
1380 IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1381 il3945_desc_lookup(desc
), desc
, time
, blink1
, blink2
,
1382 ilink1
, ilink2
, data1
);
1387 il3945_irq_tasklet(struct il_priv
*il
)
1389 u32 inta
, handled
= 0;
1391 unsigned long flags
;
1392 #ifdef CONFIG_IWLEGACY_DEBUG
1396 spin_lock_irqsave(&il
->lock
, flags
);
1398 /* Ack/clear/reset pending uCode interrupts.
1399 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1400 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1401 inta
= _il_rd(il
, CSR_INT
);
1402 _il_wr(il
, CSR_INT
, inta
);
1404 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1405 * Any new interrupts that happen after this, either while we're
1406 * in this tasklet, or later, will show up in next ISR/tasklet. */
1407 inta_fh
= _il_rd(il
, CSR_FH_INT_STATUS
);
1408 _il_wr(il
, CSR_FH_INT_STATUS
, inta_fh
);
1410 #ifdef CONFIG_IWLEGACY_DEBUG
1411 if (il_get_debug_level(il
) & IL_DL_ISR
) {
1412 /* just for debug */
1413 inta_mask
= _il_rd(il
, CSR_INT_MASK
);
1414 D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta
,
1415 inta_mask
, inta_fh
);
1419 spin_unlock_irqrestore(&il
->lock
, flags
);
1421 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1422 * atomic, make sure that inta covers all the interrupts that
1423 * we've discovered, even if FH interrupt came in just after
1424 * reading CSR_INT. */
1425 if (inta_fh
& CSR39_FH_INT_RX_MASK
)
1426 inta
|= CSR_INT_BIT_FH_RX
;
1427 if (inta_fh
& CSR39_FH_INT_TX_MASK
)
1428 inta
|= CSR_INT_BIT_FH_TX
;
1430 /* Now service all interrupt bits discovered above. */
1431 if (inta
& CSR_INT_BIT_HW_ERR
) {
1432 IL_ERR("Hardware error detected. Restarting.\n");
1434 /* Tell the device to stop sending interrupts */
1435 il_disable_interrupts(il
);
1438 il_irq_handle_error(il
);
1440 handled
|= CSR_INT_BIT_HW_ERR
;
1444 #ifdef CONFIG_IWLEGACY_DEBUG
1445 if (il_get_debug_level(il
) & (IL_DL_ISR
)) {
1446 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1447 if (inta
& CSR_INT_BIT_SCD
) {
1448 D_ISR("Scheduler finished to transmit "
1449 "the frame/frames.\n");
1450 il
->isr_stats
.sch
++;
1453 /* Alive notification via Rx interrupt will do the real work */
1454 if (inta
& CSR_INT_BIT_ALIVE
) {
1455 D_ISR("Alive interrupt\n");
1456 il
->isr_stats
.alive
++;
1460 /* Safely ignore these bits for debug checks below */
1461 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1463 /* Error detected by uCode */
1464 if (inta
& CSR_INT_BIT_SW_ERR
) {
1465 IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n",
1468 il_irq_handle_error(il
);
1469 handled
|= CSR_INT_BIT_SW_ERR
;
1472 /* uCode wakes up after power-down sleep */
1473 if (inta
& CSR_INT_BIT_WAKEUP
) {
1474 D_ISR("Wakeup interrupt\n");
1475 il_rx_queue_update_write_ptr(il
, &il
->rxq
);
1476 il_txq_update_write_ptr(il
, &il
->txq
[0]);
1477 il_txq_update_write_ptr(il
, &il
->txq
[1]);
1478 il_txq_update_write_ptr(il
, &il
->txq
[2]);
1479 il_txq_update_write_ptr(il
, &il
->txq
[3]);
1480 il_txq_update_write_ptr(il
, &il
->txq
[4]);
1481 il_txq_update_write_ptr(il
, &il
->txq
[5]);
1483 il
->isr_stats
.wakeup
++;
1484 handled
|= CSR_INT_BIT_WAKEUP
;
1487 /* All uCode command responses, including Tx command responses,
1488 * Rx "responses" (frame-received notification), and other
1489 * notifications from uCode come through here*/
1490 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1491 il3945_rx_handle(il
);
1493 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1496 if (inta
& CSR_INT_BIT_FH_TX
) {
1497 D_ISR("Tx interrupt\n");
1500 _il_wr(il
, CSR_FH_INT_STATUS
, (1 << 6));
1501 il_wr(il
, FH39_TCSR_CREDIT(FH39_SRVC_CHNL
), 0x0);
1502 handled
|= CSR_INT_BIT_FH_TX
;
1505 if (inta
& ~handled
) {
1506 IL_ERR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1507 il
->isr_stats
.unhandled
++;
1510 if (inta
& ~il
->inta_mask
) {
1511 IL_WARN("Disabled INTA bits 0x%08x were pending\n",
1512 inta
& ~il
->inta_mask
);
1513 IL_WARN(" with inta_fh = 0x%08x\n", inta_fh
);
1516 /* Re-enable all interrupts */
1517 /* only Re-enable if disabled by irq */
1518 if (test_bit(S_INT_ENABLED
, &il
->status
))
1519 il_enable_interrupts(il
);
1521 #ifdef CONFIG_IWLEGACY_DEBUG
1522 if (il_get_debug_level(il
) & (IL_DL_ISR
)) {
1523 inta
= _il_rd(il
, CSR_INT
);
1524 inta_mask
= _il_rd(il
, CSR_INT_MASK
);
1525 inta_fh
= _il_rd(il
, CSR_FH_INT_STATUS
);
1526 D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1527 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1533 il3945_get_channels_for_scan(struct il_priv
*il
, enum ieee80211_band band
,
1534 u8 is_active
, u8 n_probes
,
1535 struct il3945_scan_channel
*scan_ch
,
1536 struct ieee80211_vif
*vif
)
1538 struct ieee80211_channel
*chan
;
1539 const struct ieee80211_supported_band
*sband
;
1540 const struct il_channel_info
*ch_info
;
1541 u16 passive_dwell
= 0;
1542 u16 active_dwell
= 0;
1545 sband
= il_get_hw_mode(il
, band
);
1549 active_dwell
= il_get_active_dwell_time(il
, band
, n_probes
);
1550 passive_dwell
= il_get_passive_dwell_time(il
, band
, vif
);
1552 if (passive_dwell
<= active_dwell
)
1553 passive_dwell
= active_dwell
+ 1;
1555 for (i
= 0, added
= 0; i
< il
->scan_request
->n_channels
; i
++) {
1556 chan
= il
->scan_request
->channels
[i
];
1558 if (chan
->band
!= band
)
1561 scan_ch
->channel
= chan
->hw_value
;
1563 ch_info
= il_get_channel_info(il
, band
, scan_ch
->channel
);
1564 if (!il_is_channel_valid(ch_info
)) {
1565 D_SCAN("Channel %d is INVALID for this band.\n",
1570 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
1571 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
1572 /* If passive , set up for auto-switch
1573 * and use long active_dwell time.
1575 if (!is_active
|| il_is_channel_passive(ch_info
) ||
1576 (chan
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)) {
1577 scan_ch
->type
= 0; /* passive */
1578 if (IL_UCODE_API(il
->ucode_ver
) == 1)
1579 scan_ch
->active_dwell
=
1580 cpu_to_le16(passive_dwell
- 1);
1582 scan_ch
->type
= 1; /* active */
1585 /* Set direct probe bits. These may be used both for active
1586 * scan channels (probes gets sent right away),
1587 * or for passive channels (probes get se sent only after
1588 * hearing clear Rx packet).*/
1589 if (IL_UCODE_API(il
->ucode_ver
) >= 2) {
1591 scan_ch
->type
|= IL39_SCAN_PROBE_MASK(n_probes
);
1593 /* uCode v1 does not allow setting direct probe bits on
1594 * passive channel. */
1595 if ((scan_ch
->type
& 1) && n_probes
)
1596 scan_ch
->type
|= IL39_SCAN_PROBE_MASK(n_probes
);
1599 /* Set txpower levels to defaults */
1600 scan_ch
->tpc
.dsp_atten
= 110;
1601 /* scan_pwr_info->tpc.dsp_atten; */
1603 /*scan_pwr_info->tpc.tx_gain; */
1604 if (band
== IEEE80211_BAND_5GHZ
)
1605 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
1607 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
1608 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1610 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1614 D_SCAN("Scanning %d [%s %d]\n", scan_ch
->channel
,
1615 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
1616 (scan_ch
->type
& 1) ? active_dwell
: passive_dwell
);
1622 D_SCAN("total channels to scan %d\n", added
);
1627 il3945_init_hw_rates(struct il_priv
*il
, struct ieee80211_rate
*rates
)
1631 for (i
= 0; i
< RATE_COUNT_LEGACY
; i
++) {
1632 rates
[i
].bitrate
= il3945_rates
[i
].ieee
* 5;
1633 rates
[i
].hw_value
= i
; /* Rate scaling will work on idxes */
1634 rates
[i
].hw_value_short
= i
;
1636 if (i
> IL39_LAST_OFDM_RATE
|| i
< IL_FIRST_OFDM_RATE
) {
1638 * If CCK != 1M then set short preamble rate flag.
1641 (il3945_rates
[i
].plcp
==
1642 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
1647 /******************************************************************************
1649 * uCode download functions
1651 ******************************************************************************/
1654 il3945_dealloc_ucode_pci(struct il_priv
*il
)
1656 il_free_fw_desc(il
->pci_dev
, &il
->ucode_code
);
1657 il_free_fw_desc(il
->pci_dev
, &il
->ucode_data
);
1658 il_free_fw_desc(il
->pci_dev
, &il
->ucode_data_backup
);
1659 il_free_fw_desc(il
->pci_dev
, &il
->ucode_init
);
1660 il_free_fw_desc(il
->pci_dev
, &il
->ucode_init_data
);
1661 il_free_fw_desc(il
->pci_dev
, &il
->ucode_boot
);
1665 * il3945_verify_inst_full - verify runtime uCode image in card vs. host,
1666 * looking at all data.
1669 il3945_verify_inst_full(struct il_priv
*il
, __le32
* image
, u32 len
)
1676 D_INFO("ucode inst image size is %u\n", len
);
1678 il_wr(il
, HBUS_TARG_MEM_RADDR
, IL39_RTC_INST_LOWER_BOUND
);
1681 for (; len
> 0; len
-= sizeof(u32
), image
++) {
1682 /* read data comes through single port, auto-incr addr */
1683 /* NOTE: Use the debugless read so we don't flood kernel log
1684 * if IL_DL_IO is set */
1685 val
= _il_rd(il
, HBUS_TARG_MEM_RDAT
);
1686 if (val
!= le32_to_cpu(*image
)) {
1687 IL_ERR("uCode INST section is invalid at "
1688 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1689 save_len
- len
, val
, le32_to_cpu(*image
));
1698 D_INFO("ucode image in INSTRUCTION memory is good\n");
1704 * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1705 * using sample data 100 bytes apart. If these sample points are good,
1706 * it's a pretty good bet that everything between them is good, too.
1709 il3945_verify_inst_sparse(struct il_priv
*il
, __le32
* image
, u32 len
)
1716 D_INFO("ucode inst image size is %u\n", len
);
1718 for (i
= 0; i
< len
; i
+= 100, image
+= 100 / sizeof(u32
)) {
1719 /* read data comes through single port, auto-incr addr */
1720 /* NOTE: Use the debugless read so we don't flood kernel log
1721 * if IL_DL_IO is set */
1722 il_wr(il
, HBUS_TARG_MEM_RADDR
, i
+ IL39_RTC_INST_LOWER_BOUND
);
1723 val
= _il_rd(il
, HBUS_TARG_MEM_RDAT
);
1724 if (val
!= le32_to_cpu(*image
)) {
1725 #if 0 /* Enable this if you want to see details */
1726 IL_ERR("uCode INST section is invalid at "
1727 "offset 0x%x, is 0x%x, s/b 0x%x\n", i
, val
,
1741 * il3945_verify_ucode - determine which instruction image is in SRAM,
1742 * and verify its contents
1745 il3945_verify_ucode(struct il_priv
*il
)
1752 image
= (__le32
*) il
->ucode_boot
.v_addr
;
1753 len
= il
->ucode_boot
.len
;
1754 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1756 D_INFO("Bootstrap uCode is good in inst SRAM\n");
1760 /* Try initialize */
1761 image
= (__le32
*) il
->ucode_init
.v_addr
;
1762 len
= il
->ucode_init
.len
;
1763 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1765 D_INFO("Initialize uCode is good in inst SRAM\n");
1769 /* Try runtime/protocol */
1770 image
= (__le32
*) il
->ucode_code
.v_addr
;
1771 len
= il
->ucode_code
.len
;
1772 rc
= il3945_verify_inst_sparse(il
, image
, len
);
1774 D_INFO("Runtime uCode is good in inst SRAM\n");
1778 IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1780 /* Since nothing seems to match, show first several data entries in
1781 * instruction SRAM, so maybe visual inspection will give a clue.
1782 * Selection of bootstrap image (vs. other images) is arbitrary. */
1783 image
= (__le32
*) il
->ucode_boot
.v_addr
;
1784 len
= il
->ucode_boot
.len
;
1785 rc
= il3945_verify_inst_full(il
, image
, len
);
1791 il3945_nic_start(struct il_priv
*il
)
1793 /* Remove all resets to allow NIC to operate */
1794 _il_wr(il
, CSR_RESET
, 0);
1797 #define IL3945_UCODE_GET(item) \
1798 static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\
1800 return le32_to_cpu(ucode->v1.item); \
1804 il3945_ucode_get_header_size(u32 api_ver
)
1810 il3945_ucode_get_data(const struct il_ucode_header
*ucode
)
1812 return (u8
*) ucode
->v1
.data
;
1815 IL3945_UCODE_GET(inst_size
);
1816 IL3945_UCODE_GET(data_size
);
1817 IL3945_UCODE_GET(init_size
);
1818 IL3945_UCODE_GET(init_data_size
);
1819 IL3945_UCODE_GET(boot_size
);
1822 * il3945_read_ucode - Read uCode images from disk file.
1824 * Copy into buffers for card to fetch via bus-mastering
1827 il3945_read_ucode(struct il_priv
*il
)
1829 const struct il_ucode_header
*ucode
;
1830 int ret
= -EINVAL
, idx
;
1831 const struct firmware
*ucode_raw
;
1832 /* firmware file name contains uCode/driver compatibility version */
1833 const char *name_pre
= il
->cfg
->fw_name_pre
;
1834 const unsigned int api_max
= il
->cfg
->ucode_api_max
;
1835 const unsigned int api_min
= il
->cfg
->ucode_api_min
;
1839 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1841 /* Ask kernel firmware_class module to get the boot firmware off disk.
1842 * request_firmware() is synchronous, file is in memory on return. */
1843 for (idx
= api_max
; idx
>= api_min
; idx
--) {
1844 sprintf(buf
, "%s%u%s", name_pre
, idx
, ".ucode");
1845 ret
= request_firmware(&ucode_raw
, buf
, &il
->pci_dev
->dev
);
1847 IL_ERR("%s firmware file req failed: %d\n", buf
, ret
);
1854 IL_ERR("Loaded firmware %s, "
1855 "which is deprecated. "
1856 " Please use API v%u instead.\n", buf
,
1858 D_INFO("Got firmware '%s' file "
1859 "(%zd bytes) from disk\n", buf
, ucode_raw
->size
);
1867 /* Make sure that we got at least our header! */
1868 if (ucode_raw
->size
< il3945_ucode_get_header_size(1)) {
1869 IL_ERR("File size way too small!\n");
1874 /* Data from ucode file: header followed by uCode images */
1875 ucode
= (struct il_ucode_header
*)ucode_raw
->data
;
1877 il
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1878 api_ver
= IL_UCODE_API(il
->ucode_ver
);
1879 inst_size
= il3945_ucode_get_inst_size(ucode
);
1880 data_size
= il3945_ucode_get_data_size(ucode
);
1881 init_size
= il3945_ucode_get_init_size(ucode
);
1882 init_data_size
= il3945_ucode_get_init_data_size(ucode
);
1883 boot_size
= il3945_ucode_get_boot_size(ucode
);
1884 src
= il3945_ucode_get_data(ucode
);
1886 /* api_ver should match the api version forming part of the
1887 * firmware filename ... but we don't check for that and only rely
1888 * on the API version read from firmware header from here on forward */
1890 if (api_ver
< api_min
|| api_ver
> api_max
) {
1891 IL_ERR("Driver unable to support your firmware API. "
1892 "Driver supports v%u, firmware is v%u.\n", api_max
,
1898 if (api_ver
!= api_max
)
1899 IL_ERR("Firmware has old API version. Expected %u, "
1900 "got %u. New firmware can be obtained "
1901 "from http://www.intellinuxwireless.org.\n", api_max
,
1904 IL_INFO("loaded firmware version %u.%u.%u.%u\n",
1905 IL_UCODE_MAJOR(il
->ucode_ver
), IL_UCODE_MINOR(il
->ucode_ver
),
1906 IL_UCODE_API(il
->ucode_ver
), IL_UCODE_SERIAL(il
->ucode_ver
));
1908 snprintf(il
->hw
->wiphy
->fw_version
, sizeof(il
->hw
->wiphy
->fw_version
),
1909 "%u.%u.%u.%u", IL_UCODE_MAJOR(il
->ucode_ver
),
1910 IL_UCODE_MINOR(il
->ucode_ver
), IL_UCODE_API(il
->ucode_ver
),
1911 IL_UCODE_SERIAL(il
->ucode_ver
));
1913 D_INFO("f/w package hdr ucode version raw = 0x%x\n", il
->ucode_ver
);
1914 D_INFO("f/w package hdr runtime inst size = %u\n", inst_size
);
1915 D_INFO("f/w package hdr runtime data size = %u\n", data_size
);
1916 D_INFO("f/w package hdr init inst size = %u\n", init_size
);
1917 D_INFO("f/w package hdr init data size = %u\n", init_data_size
);
1918 D_INFO("f/w package hdr boot inst size = %u\n", boot_size
);
1920 /* Verify size of file vs. image size info in file's header */
1921 if (ucode_raw
->size
!=
1922 il3945_ucode_get_header_size(api_ver
) + inst_size
+ data_size
+
1923 init_size
+ init_data_size
+ boot_size
) {
1925 D_INFO("uCode file size %zd does not match expected size\n",
1931 /* Verify that uCode images will fit in card's SRAM */
1932 if (inst_size
> IL39_MAX_INST_SIZE
) {
1933 D_INFO("uCode instr len %d too large to fit in\n", inst_size
);
1938 if (data_size
> IL39_MAX_DATA_SIZE
) {
1939 D_INFO("uCode data len %d too large to fit in\n", data_size
);
1943 if (init_size
> IL39_MAX_INST_SIZE
) {
1944 D_INFO("uCode init instr len %d too large to fit in\n",
1949 if (init_data_size
> IL39_MAX_DATA_SIZE
) {
1950 D_INFO("uCode init data len %d too large to fit in\n",
1955 if (boot_size
> IL39_MAX_BSM_SIZE
) {
1956 D_INFO("uCode boot instr len %d too large to fit in\n",
1962 /* Allocate ucode buffers for card's bus-master loading ... */
1964 /* Runtime instructions and 2 copies of data:
1965 * 1) unmodified from disk
1966 * 2) backup cache for save/restore during power-downs */
1967 il
->ucode_code
.len
= inst_size
;
1968 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_code
);
1970 il
->ucode_data
.len
= data_size
;
1971 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_data
);
1973 il
->ucode_data_backup
.len
= data_size
;
1974 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_data_backup
);
1976 if (!il
->ucode_code
.v_addr
|| !il
->ucode_data
.v_addr
||
1977 !il
->ucode_data_backup
.v_addr
)
1980 /* Initialization instructions and data */
1981 if (init_size
&& init_data_size
) {
1982 il
->ucode_init
.len
= init_size
;
1983 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_init
);
1985 il
->ucode_init_data
.len
= init_data_size
;
1986 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_init_data
);
1988 if (!il
->ucode_init
.v_addr
|| !il
->ucode_init_data
.v_addr
)
1992 /* Bootstrap (instructions only, no data) */
1994 il
->ucode_boot
.len
= boot_size
;
1995 il_alloc_fw_desc(il
->pci_dev
, &il
->ucode_boot
);
1997 if (!il
->ucode_boot
.v_addr
)
2001 /* Copy images into buffers for card's bus-master reads ... */
2003 /* Runtime instructions (first block of data in file) */
2005 D_INFO("Copying (but not loading) uCode instr len %zd\n", len
);
2006 memcpy(il
->ucode_code
.v_addr
, src
, len
);
2009 D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2010 il
->ucode_code
.v_addr
, (u32
) il
->ucode_code
.p_addr
);
2012 /* Runtime data (2nd block)
2013 * NOTE: Copy into backup buffer will be done in il3945_up() */
2015 D_INFO("Copying (but not loading) uCode data len %zd\n", len
);
2016 memcpy(il
->ucode_data
.v_addr
, src
, len
);
2017 memcpy(il
->ucode_data_backup
.v_addr
, src
, len
);
2020 /* Initialization instructions (3rd block) */
2023 D_INFO("Copying (but not loading) init instr len %zd\n", len
);
2024 memcpy(il
->ucode_init
.v_addr
, src
, len
);
2028 /* Initialization data (4th block) */
2029 if (init_data_size
) {
2030 len
= init_data_size
;
2031 D_INFO("Copying (but not loading) init data len %zd\n", len
);
2032 memcpy(il
->ucode_init_data
.v_addr
, src
, len
);
2036 /* Bootstrap instructions (5th block) */
2038 D_INFO("Copying (but not loading) boot instr len %zd\n", len
);
2039 memcpy(il
->ucode_boot
.v_addr
, src
, len
);
2041 /* We have our copies now, allow OS release its copies */
2042 release_firmware(ucode_raw
);
2046 IL_ERR("failed to allocate pci memory\n");
2048 il3945_dealloc_ucode_pci(il
);
2051 release_firmware(ucode_raw
);
2058 * il3945_set_ucode_ptrs - Set uCode address location
2060 * Tell initialization uCode where to find runtime uCode.
2062 * BSM registers initially contain pointers to initialization uCode.
2063 * We need to replace them to load runtime uCode inst and data,
2064 * and to save runtime data when powering down.
2067 il3945_set_ucode_ptrs(struct il_priv
*il
)
2072 /* bits 31:0 for 3945 */
2073 pinst
= il
->ucode_code
.p_addr
;
2074 pdata
= il
->ucode_data_backup
.p_addr
;
2076 /* Tell bootstrap uCode where to find image to load */
2077 il_wr_prph(il
, BSM_DRAM_INST_PTR_REG
, pinst
);
2078 il_wr_prph(il
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2079 il_wr_prph(il
, BSM_DRAM_DATA_BYTECOUNT_REG
, il
->ucode_data
.len
);
2081 /* Inst byte count must be last to set up, bit 31 signals uCode
2082 * that all new ptr/size info is in place */
2083 il_wr_prph(il
, BSM_DRAM_INST_BYTECOUNT_REG
,
2084 il
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
2086 D_INFO("Runtime uCode pointers are set.\n");
2092 * il3945_init_alive_start - Called after N_ALIVE notification received
2094 * Called after N_ALIVE notification received from "initialize" uCode.
2096 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2099 il3945_init_alive_start(struct il_priv
*il
)
2101 /* Check alive response for "valid" sign from uCode */
2102 if (il
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
2103 /* We had an error bringing up the hardware, so take it
2104 * all the way back down so we can try again */
2105 D_INFO("Initialize Alive failed.\n");
2109 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2110 * This is a paranoid check, because we would not have gotten the
2111 * "initialize" alive if code weren't properly loaded. */
2112 if (il3945_verify_ucode(il
)) {
2113 /* Runtime instruction load was bad;
2114 * take it all the way back down so we can try again */
2115 D_INFO("Bad \"initialize\" uCode load.\n");
2119 /* Send pointers to protocol/runtime uCode image ... init code will
2120 * load and launch runtime uCode, which will send us another "Alive"
2122 D_INFO("Initialization Alive received.\n");
2123 if (il3945_set_ucode_ptrs(il
)) {
2124 /* Runtime instruction load won't happen;
2125 * take it all the way back down so we can try again */
2126 D_INFO("Couldn't set up uCode pointers.\n");
2132 queue_work(il
->workqueue
, &il
->restart
);
2136 * il3945_alive_start - called after N_ALIVE notification received
2137 * from protocol/runtime uCode (initialization uCode's
2138 * Alive gets handled by il3945_init_alive_start()).
2141 il3945_alive_start(struct il_priv
*il
)
2143 int thermal_spin
= 0;
2146 D_INFO("Runtime Alive received.\n");
2148 if (il
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2149 /* We had an error bringing up the hardware, so take it
2150 * all the way back down so we can try again */
2151 D_INFO("Alive failed.\n");
2155 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2156 * This is a paranoid check, because we would not have gotten the
2157 * "runtime" alive if code weren't properly loaded. */
2158 if (il3945_verify_ucode(il
)) {
2159 /* Runtime instruction load was bad;
2160 * take it all the way back down so we can try again */
2161 D_INFO("Bad runtime uCode load.\n");
2165 rfkill
= il_rd_prph(il
, APMG_RFKILL_REG
);
2166 D_INFO("RFKILL status: 0x%x\n", rfkill
);
2169 clear_bit(S_RFKILL
, &il
->status
);
2170 /* if RFKILL is not on, then wait for thermal
2171 * sensor in adapter to kick in */
2172 while (il3945_hw_get_temperature(il
) == 0) {
2178 D_INFO("Thermal calibration took %dus\n",
2181 set_bit(S_RFKILL
, &il
->status
);
2183 /* After the ALIVE response, we can send commands to 3945 uCode */
2184 set_bit(S_ALIVE
, &il
->status
);
2186 /* Enable watchdog to monitor the driver tx queues */
2187 il_setup_watchdog(il
);
2189 if (il_is_rfkill(il
))
2192 ieee80211_wake_queues(il
->hw
);
2194 il
->active_rate
= RATES_MASK_3945
;
2196 il_power_update_mode(il
, true);
2198 if (il_is_associated(il
)) {
2199 struct il3945_rxon_cmd
*active_rxon
=
2200 (struct il3945_rxon_cmd
*)(&il
->active
);
2202 il
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2203 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2205 /* Initialize our rx_config data */
2206 il_connection_init_rx_config(il
);
2209 /* Configure Bluetooth device coexistence support */
2210 il_send_bt_config(il
);
2212 set_bit(S_READY
, &il
->status
);
2214 /* Configure the adapter for unassociated operation */
2215 il3945_commit_rxon(il
);
2217 il3945_reg_txpower_periodic(il
);
2219 D_INFO("ALIVE processing complete.\n");
2220 wake_up(&il
->wait_command_queue
);
2225 queue_work(il
->workqueue
, &il
->restart
);
2228 static void il3945_cancel_deferred_work(struct il_priv
*il
);
2231 __il3945_down(struct il_priv
*il
)
2233 unsigned long flags
;
2236 D_INFO(DRV_NAME
" is going down\n");
2238 il_scan_cancel_timeout(il
, 200);
2240 exit_pending
= test_and_set_bit(S_EXIT_PENDING
, &il
->status
);
2242 /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set
2243 * to prevent rearm timer */
2244 del_timer_sync(&il
->watchdog
);
2246 /* Station information will now be cleared in device */
2247 il_clear_ucode_stations(il
);
2248 il_dealloc_bcast_stations(il
);
2249 il_clear_driver_stations(il
);
2251 /* Unblock any waiting calls */
2252 wake_up_all(&il
->wait_command_queue
);
2254 /* Wipe out the EXIT_PENDING status bit if we are not actually
2255 * exiting the module */
2257 clear_bit(S_EXIT_PENDING
, &il
->status
);
2259 /* stop and reset the on-board processor */
2260 _il_wr(il
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2262 /* tell the device to stop sending interrupts */
2263 spin_lock_irqsave(&il
->lock
, flags
);
2264 il_disable_interrupts(il
);
2265 spin_unlock_irqrestore(&il
->lock
, flags
);
2266 il3945_synchronize_irq(il
);
2268 if (il
->mac80211_registered
)
2269 ieee80211_stop_queues(il
->hw
);
2271 /* If we have not previously called il3945_init() then
2272 * clear all bits but the RF Kill bits and return */
2273 if (!il_is_init(il
)) {
2275 test_bit(S_RFKILL
, &il
->status
) << S_RFKILL
|
2276 test_bit(S_GEO_CONFIGURED
, &il
->status
) << S_GEO_CONFIGURED
|
2277 test_bit(S_EXIT_PENDING
, &il
->status
) << S_EXIT_PENDING
;
2281 /* ...otherwise clear out all the status bits but the RF Kill
2282 * bit and continue taking the NIC down. */
2284 test_bit(S_RFKILL
, &il
->status
) << S_RFKILL
|
2285 test_bit(S_GEO_CONFIGURED
, &il
->status
) << S_GEO_CONFIGURED
|
2286 test_bit(S_FW_ERROR
, &il
->status
) << S_FW_ERROR
|
2287 test_bit(S_EXIT_PENDING
, &il
->status
) << S_EXIT_PENDING
;
2290 * We disabled and synchronized interrupt, and priv->mutex is taken, so
2291 * here is the only thread which will program device registers, but
2292 * still have lockdep assertions, so we are taking reg_lock.
2294 spin_lock_irq(&il
->reg_lock
);
2295 /* FIXME: il_grab_nic_access if rfkill is off ? */
2297 il3945_hw_txq_ctx_stop(il
);
2298 il3945_hw_rxq_stop(il
);
2299 /* Power-down device's busmaster DMA clocks */
2300 _il_wr_prph(il
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2302 /* Stop the device, and put it in low power state */
2305 spin_unlock_irq(&il
->reg_lock
);
2307 il3945_hw_txq_ctx_free(il
);
2309 memset(&il
->card_alive
, 0, sizeof(struct il_alive_resp
));
2312 dev_kfree_skb(il
->beacon_skb
);
2313 il
->beacon_skb
= NULL
;
2315 /* clear out any free frames */
2316 il3945_clear_free_frames(il
);
2320 il3945_down(struct il_priv
*il
)
2322 mutex_lock(&il
->mutex
);
2324 mutex_unlock(&il
->mutex
);
2326 il3945_cancel_deferred_work(il
);
2329 #define MAX_HW_RESTARTS 5
2332 il3945_alloc_bcast_station(struct il_priv
*il
)
2334 unsigned long flags
;
2337 spin_lock_irqsave(&il
->sta_lock
, flags
);
2338 sta_id
= il_prep_station(il
, il_bcast_addr
, false, NULL
);
2339 if (sta_id
== IL_INVALID_STATION
) {
2340 IL_ERR("Unable to prepare broadcast station\n");
2341 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
2346 il
->stations
[sta_id
].used
|= IL_STA_DRIVER_ACTIVE
;
2347 il
->stations
[sta_id
].used
|= IL_STA_BCAST
;
2348 spin_unlock_irqrestore(&il
->sta_lock
, flags
);
2354 __il3945_up(struct il_priv
*il
)
2358 rc
= il3945_alloc_bcast_station(il
);
2362 if (test_bit(S_EXIT_PENDING
, &il
->status
)) {
2363 IL_WARN("Exit pending; will not bring the NIC up\n");
2367 if (!il
->ucode_data_backup
.v_addr
|| !il
->ucode_data
.v_addr
) {
2368 IL_ERR("ucode not available for device bring up\n");
2372 /* If platform's RF_KILL switch is NOT set to KILL */
2373 if (_il_rd(il
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2374 clear_bit(S_RFKILL
, &il
->status
);
2376 set_bit(S_RFKILL
, &il
->status
);
2377 IL_WARN("Radio disabled by HW RF Kill switch\n");
2381 _il_wr(il
, CSR_INT
, 0xFFFFFFFF);
2383 rc
= il3945_hw_nic_init(il
);
2385 IL_ERR("Unable to int nic\n");
2389 /* make sure rfkill handshake bits are cleared */
2390 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2391 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2393 /* clear (again), then enable host interrupts */
2394 _il_wr(il
, CSR_INT
, 0xFFFFFFFF);
2395 il_enable_interrupts(il
);
2397 /* really make sure rfkill handshake bits are cleared */
2398 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2399 _il_wr(il
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2401 /* Copy original ucode data image from disk into backup cache.
2402 * This will be used to initialize the on-board processor's
2403 * data SRAM for a clean start when the runtime program first loads. */
2404 memcpy(il
->ucode_data_backup
.v_addr
, il
->ucode_data
.v_addr
,
2405 il
->ucode_data
.len
);
2407 /* We return success when we resume from suspend and rf_kill is on. */
2408 if (test_bit(S_RFKILL
, &il
->status
))
2411 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2413 /* load bootstrap state machine,
2414 * load bootstrap program into processor's memory,
2415 * prepare to load the "initialize" uCode */
2416 rc
= il
->ops
->load_ucode(il
);
2419 IL_ERR("Unable to set up bootstrap uCode: %d\n", rc
);
2423 /* start card; "initialize" will load runtime ucode */
2424 il3945_nic_start(il
);
2426 D_INFO(DRV_NAME
" is coming up\n");
2431 set_bit(S_EXIT_PENDING
, &il
->status
);
2433 clear_bit(S_EXIT_PENDING
, &il
->status
);
2435 /* tried to restart and config the device for as long as our
2436 * patience could withstand */
2437 IL_ERR("Unable to initialize device after %d attempts.\n", i
);
2441 /*****************************************************************************
2443 * Workqueue callbacks
2445 *****************************************************************************/
2448 il3945_bg_init_alive_start(struct work_struct
*data
)
2450 struct il_priv
*il
=
2451 container_of(data
, struct il_priv
, init_alive_start
.work
);
2453 mutex_lock(&il
->mutex
);
2454 if (test_bit(S_EXIT_PENDING
, &il
->status
))
2457 il3945_init_alive_start(il
);
2459 mutex_unlock(&il
->mutex
);
2463 il3945_bg_alive_start(struct work_struct
*data
)
2465 struct il_priv
*il
=
2466 container_of(data
, struct il_priv
, alive_start
.work
);
2468 mutex_lock(&il
->mutex
);
2469 if (test_bit(S_EXIT_PENDING
, &il
->status
) || il
->txq
== NULL
)
2472 il3945_alive_start(il
);
2474 mutex_unlock(&il
->mutex
);
2478 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2479 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2480 * *is* readable even when device has been SW_RESET into low power mode
2481 * (e.g. during RF KILL).
2484 il3945_rfkill_poll(struct work_struct
*data
)
2486 struct il_priv
*il
=
2487 container_of(data
, struct il_priv
, _3945
.rfkill_poll
.work
);
2488 bool old_rfkill
= test_bit(S_RFKILL
, &il
->status
);
2490 !(_il_rd(il
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
);
2492 if (new_rfkill
!= old_rfkill
) {
2494 set_bit(S_RFKILL
, &il
->status
);
2496 clear_bit(S_RFKILL
, &il
->status
);
2498 wiphy_rfkill_set_hw_state(il
->hw
->wiphy
, new_rfkill
);
2500 D_RF_KILL("RF_KILL bit toggled to %s.\n",
2501 new_rfkill
? "disable radio" : "enable radio");
2504 /* Keep this running, even if radio now enabled. This will be
2505 * cancelled in mac_start() if system decides to start again */
2506 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
,
2507 round_jiffies_relative(2 * HZ
));
2512 il3945_request_scan(struct il_priv
*il
, struct ieee80211_vif
*vif
)
2514 struct il_host_cmd cmd
= {
2516 .len
= sizeof(struct il3945_scan_cmd
),
2517 .flags
= CMD_SIZE_HUGE
,
2519 struct il3945_scan_cmd
*scan
;
2521 enum ieee80211_band band
;
2522 bool is_active
= false;
2526 lockdep_assert_held(&il
->mutex
);
2528 if (!il
->scan_cmd
) {
2530 kmalloc(sizeof(struct il3945_scan_cmd
) + IL_MAX_SCAN_SIZE
,
2532 if (!il
->scan_cmd
) {
2533 D_SCAN("Fail to allocate scan memory\n");
2537 scan
= il
->scan_cmd
;
2538 memset(scan
, 0, sizeof(struct il3945_scan_cmd
) + IL_MAX_SCAN_SIZE
);
2540 scan
->quiet_plcp_th
= IL_PLCP_QUIET_THRESH
;
2541 scan
->quiet_time
= IL_ACTIVE_QUIET_TIME
;
2543 if (il_is_associated(il
)) {
2546 u32 suspend_time
= 100;
2547 u32 scan_suspend_time
= 100;
2549 D_INFO("Scanning while associated...\n");
2551 interval
= vif
->bss_conf
.beacon_int
;
2553 scan
->suspend_time
= 0;
2554 scan
->max_out_time
= cpu_to_le32(200 * 1024);
2556 interval
= suspend_time
;
2558 * suspend time format:
2559 * 0-19: beacon interval in usec (time before exec.)
2561 * 24-31: number of beacons (suspend between channels)
2564 extra
= (suspend_time
/ interval
) << 24;
2566 0xFF0FFFFF & (extra
| ((suspend_time
% interval
) * 1024));
2568 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
2569 D_SCAN("suspend_time 0x%X beacon interval %d\n",
2570 scan_suspend_time
, interval
);
2573 if (il
->scan_request
->n_ssids
) {
2575 D_SCAN("Kicking off active scan\n");
2576 for (i
= 0; i
< il
->scan_request
->n_ssids
; i
++) {
2577 /* always does wildcard anyway */
2578 if (!il
->scan_request
->ssids
[i
].ssid_len
)
2580 scan
->direct_scan
[p
].id
= WLAN_EID_SSID
;
2581 scan
->direct_scan
[p
].len
=
2582 il
->scan_request
->ssids
[i
].ssid_len
;
2583 memcpy(scan
->direct_scan
[p
].ssid
,
2584 il
->scan_request
->ssids
[i
].ssid
,
2585 il
->scan_request
->ssids
[i
].ssid_len
);
2591 D_SCAN("Kicking off passive scan.\n");
2593 /* We don't build a direct scan probe request; the uCode will do
2594 * that based on the direct_mask added to each channel entry */
2595 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
2596 scan
->tx_cmd
.sta_id
= il
->hw_params
.bcast_id
;
2597 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2599 /* flags + rate selection */
2601 switch (il
->scan_band
) {
2602 case IEEE80211_BAND_2GHZ
:
2603 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
2604 scan
->tx_cmd
.rate
= RATE_1M_PLCP
;
2605 band
= IEEE80211_BAND_2GHZ
;
2607 case IEEE80211_BAND_5GHZ
:
2608 scan
->tx_cmd
.rate
= RATE_6M_PLCP
;
2609 band
= IEEE80211_BAND_5GHZ
;
2612 IL_WARN("Invalid scan band\n");
2617 * If active scaning is requested but a certain channel is marked
2618 * passive, we can do active scanning if we detect transmissions. For
2619 * passive only scanning disable switching to active on any channel.
2622 is_active
? IL_GOOD_CRC_TH_DEFAULT
: IL_GOOD_CRC_TH_NEVER
;
2625 il_fill_probe_req(il
, (struct ieee80211_mgmt
*)scan
->data
,
2626 vif
->addr
, il
->scan_request
->ie
,
2627 il
->scan_request
->ie_len
,
2628 IL_MAX_SCAN_SIZE
- sizeof(*scan
));
2629 scan
->tx_cmd
.len
= cpu_to_le16(len
);
2631 /* select Rx antennas */
2632 scan
->flags
|= il3945_get_antenna_flags(il
);
2634 scan
->channel_count
=
2635 il3945_get_channels_for_scan(il
, band
, is_active
, n_probes
,
2636 (void *)&scan
->data
[len
], vif
);
2637 if (scan
->channel_count
== 0) {
2638 D_SCAN("channel count %d\n", scan
->channel_count
);
2643 le16_to_cpu(scan
->tx_cmd
.len
) +
2644 scan
->channel_count
* sizeof(struct il3945_scan_channel
);
2646 scan
->len
= cpu_to_le16(cmd
.len
);
2648 set_bit(S_SCAN_HW
, &il
->status
);
2649 ret
= il_send_cmd_sync(il
, &cmd
);
2651 clear_bit(S_SCAN_HW
, &il
->status
);
2656 il3945_post_scan(struct il_priv
*il
)
2659 * Since setting the RXON may have been deferred while
2660 * performing the scan, fire one off if needed
2662 if (memcmp(&il
->staging
, &il
->active
, sizeof(il
->staging
)))
2663 il3945_commit_rxon(il
);
2667 il3945_bg_restart(struct work_struct
*data
)
2669 struct il_priv
*il
= container_of(data
, struct il_priv
, restart
);
2671 if (test_bit(S_EXIT_PENDING
, &il
->status
))
2674 if (test_and_clear_bit(S_FW_ERROR
, &il
->status
)) {
2675 mutex_lock(&il
->mutex
);
2677 mutex_unlock(&il
->mutex
);
2679 ieee80211_restart_hw(il
->hw
);
2683 mutex_lock(&il
->mutex
);
2684 if (test_bit(S_EXIT_PENDING
, &il
->status
)) {
2685 mutex_unlock(&il
->mutex
);
2690 mutex_unlock(&il
->mutex
);
2695 il3945_bg_rx_replenish(struct work_struct
*data
)
2697 struct il_priv
*il
= container_of(data
, struct il_priv
, rx_replenish
);
2699 mutex_lock(&il
->mutex
);
2700 if (test_bit(S_EXIT_PENDING
, &il
->status
))
2703 il3945_rx_replenish(il
);
2705 mutex_unlock(&il
->mutex
);
2709 il3945_post_associate(struct il_priv
*il
)
2712 struct ieee80211_conf
*conf
= NULL
;
2714 if (!il
->vif
|| !il
->is_open
)
2717 D_ASSOC("Associated as %d to: %pM\n", il
->vif
->bss_conf
.aid
,
2718 il
->active
.bssid_addr
);
2720 if (test_bit(S_EXIT_PENDING
, &il
->status
))
2723 il_scan_cancel_timeout(il
, 200);
2725 conf
= &il
->hw
->conf
;
2727 il
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2728 il3945_commit_rxon(il
);
2730 rc
= il_send_rxon_timing(il
);
2732 IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n");
2734 il
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2736 il
->staging
.assoc_id
= cpu_to_le16(il
->vif
->bss_conf
.aid
);
2738 D_ASSOC("assoc id %d beacon interval %d\n", il
->vif
->bss_conf
.aid
,
2739 il
->vif
->bss_conf
.beacon_int
);
2741 if (il
->vif
->bss_conf
.use_short_preamble
)
2742 il
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2744 il
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2746 if (il
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
2747 if (il
->vif
->bss_conf
.use_short_slot
)
2748 il
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2750 il
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2753 il3945_commit_rxon(il
);
2755 switch (il
->vif
->type
) {
2756 case NL80211_IFTYPE_STATION
:
2757 il3945_rate_scale_init(il
->hw
, IL_AP_ID
);
2759 case NL80211_IFTYPE_ADHOC
:
2760 il3945_send_beacon_cmd(il
);
2763 IL_ERR("%s Should not be called in %d mode\n", __func__
,
2769 /*****************************************************************************
2771 * mac80211 entry point functions
2773 *****************************************************************************/
2775 #define UCODE_READY_TIMEOUT (2 * HZ)
2778 il3945_mac_start(struct ieee80211_hw
*hw
)
2780 struct il_priv
*il
= hw
->priv
;
2783 /* we should be verifying the device is ready to be opened */
2784 mutex_lock(&il
->mutex
);
2785 D_MAC80211("enter\n");
2787 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2788 * ucode filename and max sizes are card-specific. */
2790 if (!il
->ucode_code
.len
) {
2791 ret
= il3945_read_ucode(il
);
2793 IL_ERR("Could not read microcode: %d\n", ret
);
2794 mutex_unlock(&il
->mutex
);
2795 goto out_release_irq
;
2799 ret
= __il3945_up(il
);
2801 mutex_unlock(&il
->mutex
);
2804 goto out_release_irq
;
2806 D_INFO("Start UP work.\n");
2808 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
2809 * mac80211 will not be run successfully. */
2810 ret
= wait_event_timeout(il
->wait_command_queue
,
2811 test_bit(S_READY
, &il
->status
),
2812 UCODE_READY_TIMEOUT
);
2814 if (!test_bit(S_READY
, &il
->status
)) {
2815 IL_ERR("Wait for START_ALIVE timeout after %dms.\n",
2816 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2818 goto out_release_irq
;
2822 /* ucode is running and will send rfkill notifications,
2823 * no need to poll the killswitch state anymore */
2824 cancel_delayed_work(&il
->_3945
.rfkill_poll
);
2827 D_MAC80211("leave\n");
2832 D_MAC80211("leave - failed\n");
2837 il3945_mac_stop(struct ieee80211_hw
*hw
)
2839 struct il_priv
*il
= hw
->priv
;
2841 D_MAC80211("enter\n");
2844 D_MAC80211("leave - skip\n");
2852 flush_workqueue(il
->workqueue
);
2854 /* start polling the killswitch state again */
2855 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
,
2856 round_jiffies_relative(2 * HZ
));
2858 D_MAC80211("leave\n");
2862 il3945_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2864 struct il_priv
*il
= hw
->priv
;
2866 D_MAC80211("enter\n");
2868 D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2869 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2871 if (il3945_tx_skb(il
, skb
))
2872 dev_kfree_skb_any(skb
);
2874 D_MAC80211("leave\n");
2878 il3945_config_ap(struct il_priv
*il
)
2880 struct ieee80211_vif
*vif
= il
->vif
;
2883 if (test_bit(S_EXIT_PENDING
, &il
->status
))
2886 /* The following should be done only at AP bring up */
2887 if (!(il_is_associated(il
))) {
2889 /* RXON - unassoc (to set timing command) */
2890 il
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2891 il3945_commit_rxon(il
);
2894 rc
= il_send_rxon_timing(il
);
2896 IL_WARN("C_RXON_TIMING failed - "
2897 "Attempting to continue.\n");
2899 il
->staging
.assoc_id
= 0;
2901 if (vif
->bss_conf
.use_short_preamble
)
2902 il
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2904 il
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2906 if (il
->staging
.flags
& RXON_FLG_BAND_24G_MSK
) {
2907 if (vif
->bss_conf
.use_short_slot
)
2908 il
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2910 il
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2912 /* restore RXON assoc */
2913 il
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2914 il3945_commit_rxon(il
);
2916 il3945_send_beacon_cmd(il
);
2920 il3945_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2921 struct ieee80211_vif
*vif
, struct ieee80211_sta
*sta
,
2922 struct ieee80211_key_conf
*key
)
2924 struct il_priv
*il
= hw
->priv
;
2926 u8 sta_id
= IL_INVALID_STATION
;
2929 D_MAC80211("enter\n");
2931 if (il3945_mod_params
.sw_crypto
) {
2932 D_MAC80211("leave - hwcrypto disabled\n");
2937 * To support IBSS RSN, don't program group keys in IBSS, the
2938 * hardware will then not attempt to decrypt the frames.
2940 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
2941 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
2942 D_MAC80211("leave - IBSS RSN\n");
2946 static_key
= !il_is_associated(il
);
2949 sta_id
= il_sta_id_or_broadcast(il
, sta
);
2950 if (sta_id
== IL_INVALID_STATION
) {
2951 D_MAC80211("leave - station not found\n");
2956 mutex_lock(&il
->mutex
);
2957 il_scan_cancel_timeout(il
, 100);
2962 ret
= il3945_set_static_key(il
, key
);
2964 ret
= il3945_set_dynamic_key(il
, key
, sta_id
);
2965 D_MAC80211("enable hwcrypto key\n");
2969 ret
= il3945_remove_static_key(il
);
2971 ret
= il3945_clear_sta_key_info(il
, sta_id
);
2972 D_MAC80211("disable hwcrypto key\n");
2978 D_MAC80211("leave ret %d\n", ret
);
2979 mutex_unlock(&il
->mutex
);
2985 il3945_mac_sta_add(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2986 struct ieee80211_sta
*sta
)
2988 struct il_priv
*il
= hw
->priv
;
2989 struct il3945_sta_priv
*sta_priv
= (void *)sta
->drv_priv
;
2991 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
2994 mutex_lock(&il
->mutex
);
2995 D_INFO("station %pM\n", sta
->addr
);
2996 sta_priv
->common
.sta_id
= IL_INVALID_STATION
;
2998 ret
= il_add_station_common(il
, sta
->addr
, is_ap
, sta
, &sta_id
);
3000 IL_ERR("Unable to add station %pM (%d)\n", sta
->addr
, ret
);
3001 /* Should we return success if return code is EEXIST ? */
3002 mutex_unlock(&il
->mutex
);
3006 sta_priv
->common
.sta_id
= sta_id
;
3008 /* Initialize rate scaling */
3009 D_INFO("Initializing rate scaling for station %pM\n", sta
->addr
);
3010 il3945_rs_rate_init(il
, sta
, sta_id
);
3011 mutex_unlock(&il
->mutex
);
3017 il3945_configure_filter(struct ieee80211_hw
*hw
, unsigned int changed_flags
,
3018 unsigned int *total_flags
, u64 multicast
)
3020 struct il_priv
*il
= hw
->priv
;
3021 __le32 filter_or
= 0, filter_nand
= 0;
3023 #define CHK(test, flag) do { \
3024 if (*total_flags & (test)) \
3025 filter_or |= (flag); \
3027 filter_nand |= (flag); \
3030 D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags
,
3033 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
3034 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
);
3035 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
3039 mutex_lock(&il
->mutex
);
3041 il
->staging
.filter_flags
&= ~filter_nand
;
3042 il
->staging
.filter_flags
|= filter_or
;
3045 * Not committing directly because hardware can perform a scan,
3046 * but even if hw is ready, committing here breaks for some reason,
3047 * we'll eventually commit the filter flags change anyway.
3050 mutex_unlock(&il
->mutex
);
3053 * Receiving all multicast frames is always enabled by the
3054 * default flags setup in il_connection_init_rx_config()
3055 * since we currently do not support programming multicast
3056 * filters into the device.
3059 FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
3060 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
3063 /*****************************************************************************
3067 *****************************************************************************/
3069 #ifdef CONFIG_IWLEGACY_DEBUG
3072 * The following adds a new attribute to the sysfs representation
3073 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3074 * used for controlling the debug level.
3076 * See the level definitions in iwl for details.
3078 * The debug_level being managed using sysfs below is a per device debug
3079 * level that is used instead of the global debug level if it (the per
3080 * device debug level) is set.
3083 il3945_show_debug_level(struct device
*d
, struct device_attribute
*attr
,
3086 struct il_priv
*il
= dev_get_drvdata(d
);
3087 return sprintf(buf
, "0x%08X\n", il_get_debug_level(il
));
3091 il3945_store_debug_level(struct device
*d
, struct device_attribute
*attr
,
3092 const char *buf
, size_t count
)
3094 struct il_priv
*il
= dev_get_drvdata(d
);
3098 ret
= strict_strtoul(buf
, 0, &val
);
3100 IL_INFO("%s is not in hex or decimal form.\n", buf
);
3102 il
->debug_level
= val
;
3104 return strnlen(buf
, count
);
3107 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
, il3945_show_debug_level
,
3108 il3945_store_debug_level
);
3110 #endif /* CONFIG_IWLEGACY_DEBUG */
3113 il3945_show_temperature(struct device
*d
, struct device_attribute
*attr
,
3116 struct il_priv
*il
= dev_get_drvdata(d
);
3118 if (!il_is_alive(il
))
3121 return sprintf(buf
, "%d\n", il3945_hw_get_temperature(il
));
3124 static DEVICE_ATTR(temperature
, S_IRUGO
, il3945_show_temperature
, NULL
);
3127 il3945_show_tx_power(struct device
*d
, struct device_attribute
*attr
, char *buf
)
3129 struct il_priv
*il
= dev_get_drvdata(d
);
3130 return sprintf(buf
, "%d\n", il
->tx_power_user_lmt
);
3134 il3945_store_tx_power(struct device
*d
, struct device_attribute
*attr
,
3135 const char *buf
, size_t count
)
3137 struct il_priv
*il
= dev_get_drvdata(d
);
3138 char *p
= (char *)buf
;
3141 val
= simple_strtoul(p
, &p
, 10);
3143 IL_INFO(": %s is not in decimal form.\n", buf
);
3145 il3945_hw_reg_set_txpower(il
, val
);
3150 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, il3945_show_tx_power
,
3151 il3945_store_tx_power
);
3154 il3945_show_flags(struct device
*d
, struct device_attribute
*attr
, char *buf
)
3156 struct il_priv
*il
= dev_get_drvdata(d
);
3158 return sprintf(buf
, "0x%04X\n", il
->active
.flags
);
3162 il3945_store_flags(struct device
*d
, struct device_attribute
*attr
,
3163 const char *buf
, size_t count
)
3165 struct il_priv
*il
= dev_get_drvdata(d
);
3166 u32 flags
= simple_strtoul(buf
, NULL
, 0);
3168 mutex_lock(&il
->mutex
);
3169 if (le32_to_cpu(il
->staging
.flags
) != flags
) {
3170 /* Cancel any currently running scans... */
3171 if (il_scan_cancel_timeout(il
, 100))
3172 IL_WARN("Could not cancel scan.\n");
3174 D_INFO("Committing rxon.flags = 0x%04X\n", flags
);
3175 il
->staging
.flags
= cpu_to_le32(flags
);
3176 il3945_commit_rxon(il
);
3179 mutex_unlock(&il
->mutex
);
3184 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, il3945_show_flags
,
3185 il3945_store_flags
);
3188 il3945_show_filter_flags(struct device
*d
, struct device_attribute
*attr
,
3191 struct il_priv
*il
= dev_get_drvdata(d
);
3193 return sprintf(buf
, "0x%04X\n", le32_to_cpu(il
->active
.filter_flags
));
3197 il3945_store_filter_flags(struct device
*d
, struct device_attribute
*attr
,
3198 const char *buf
, size_t count
)
3200 struct il_priv
*il
= dev_get_drvdata(d
);
3201 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
3203 mutex_lock(&il
->mutex
);
3204 if (le32_to_cpu(il
->staging
.filter_flags
) != filter_flags
) {
3205 /* Cancel any currently running scans... */
3206 if (il_scan_cancel_timeout(il
, 100))
3207 IL_WARN("Could not cancel scan.\n");
3209 D_INFO("Committing rxon.filter_flags = " "0x%04X\n",
3211 il
->staging
.filter_flags
= cpu_to_le32(filter_flags
);
3212 il3945_commit_rxon(il
);
3215 mutex_unlock(&il
->mutex
);
3220 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, il3945_show_filter_flags
,
3221 il3945_store_filter_flags
);
3224 il3945_show_measurement(struct device
*d
, struct device_attribute
*attr
,
3227 struct il_priv
*il
= dev_get_drvdata(d
);
3228 struct il_spectrum_notification measure_report
;
3229 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
3230 u8
*data
= (u8
*) &measure_report
;
3231 unsigned long flags
;
3233 spin_lock_irqsave(&il
->lock
, flags
);
3234 if (!(il
->measurement_status
& MEASUREMENT_READY
)) {
3235 spin_unlock_irqrestore(&il
->lock
, flags
);
3238 memcpy(&measure_report
, &il
->measure_report
, size
);
3239 il
->measurement_status
= 0;
3240 spin_unlock_irqrestore(&il
->lock
, flags
);
3242 while (size
&& PAGE_SIZE
- len
) {
3243 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3244 PAGE_SIZE
- len
, 1);
3246 if (PAGE_SIZE
- len
)
3250 size
-= min(size
, 16U);
3257 il3945_store_measurement(struct device
*d
, struct device_attribute
*attr
,
3258 const char *buf
, size_t count
)
3260 struct il_priv
*il
= dev_get_drvdata(d
);
3261 struct ieee80211_measurement_params params
= {
3262 .channel
= le16_to_cpu(il
->active
.channel
),
3263 .start_time
= cpu_to_le64(il
->_3945
.last_tsf
),
3264 .duration
= cpu_to_le16(1),
3266 u8 type
= IL_MEASURE_BASIC
;
3272 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
3273 channel
= simple_strtoul(p
, NULL
, 0);
3275 params
.channel
= channel
;
3278 while (*p
&& *p
!= ' ')
3281 type
= simple_strtoul(p
+ 1, NULL
, 0);
3284 D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n",
3285 type
, params
.channel
, buf
);
3286 il3945_get_measurement(il
, ¶ms
, type
);
3291 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
, il3945_show_measurement
,
3292 il3945_store_measurement
);
3295 il3945_store_retry_rate(struct device
*d
, struct device_attribute
*attr
,
3296 const char *buf
, size_t count
)
3298 struct il_priv
*il
= dev_get_drvdata(d
);
3300 il
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
3301 if (il
->retry_rate
<= 0)
3308 il3945_show_retry_rate(struct device
*d
, struct device_attribute
*attr
,
3311 struct il_priv
*il
= dev_get_drvdata(d
);
3312 return sprintf(buf
, "%d", il
->retry_rate
);
3315 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, il3945_show_retry_rate
,
3316 il3945_store_retry_rate
);
3319 il3945_show_channels(struct device
*d
, struct device_attribute
*attr
, char *buf
)
3321 /* all this shit doesn't belong into sysfs anyway */
3325 static DEVICE_ATTR(channels
, S_IRUSR
, il3945_show_channels
, NULL
);
3328 il3945_show_antenna(struct device
*d
, struct device_attribute
*attr
, char *buf
)
3330 struct il_priv
*il
= dev_get_drvdata(d
);
3332 if (!il_is_alive(il
))
3335 return sprintf(buf
, "%d\n", il3945_mod_params
.antenna
);
3339 il3945_store_antenna(struct device
*d
, struct device_attribute
*attr
,
3340 const char *buf
, size_t count
)
3342 struct il_priv
*il __maybe_unused
= dev_get_drvdata(d
);
3348 if (sscanf(buf
, "%1i", &ant
) != 1) {
3349 D_INFO("not in hex or decimal form.\n");
3353 if (ant
>= 0 && ant
<= 2) {
3354 D_INFO("Setting antenna select to %d.\n", ant
);
3355 il3945_mod_params
.antenna
= (enum il3945_antenna
)ant
;
3357 D_INFO("Bad antenna select value %d.\n", ant
);
3362 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, il3945_show_antenna
,
3363 il3945_store_antenna
);
3366 il3945_show_status(struct device
*d
, struct device_attribute
*attr
, char *buf
)
3368 struct il_priv
*il
= dev_get_drvdata(d
);
3369 if (!il_is_alive(il
))
3371 return sprintf(buf
, "0x%08x\n", (int)il
->status
);
3374 static DEVICE_ATTR(status
, S_IRUGO
, il3945_show_status
, NULL
);
3377 il3945_dump_error_log(struct device
*d
, struct device_attribute
*attr
,
3378 const char *buf
, size_t count
)
3380 struct il_priv
*il
= dev_get_drvdata(d
);
3381 char *p
= (char *)buf
;
3384 il3945_dump_nic_error_log(il
);
3386 return strnlen(buf
, count
);
3389 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, il3945_dump_error_log
);
3391 /*****************************************************************************
3393 * driver setup and tear down
3395 *****************************************************************************/
3398 il3945_setup_deferred_work(struct il_priv
*il
)
3400 il
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3402 init_waitqueue_head(&il
->wait_command_queue
);
3404 INIT_WORK(&il
->restart
, il3945_bg_restart
);
3405 INIT_WORK(&il
->rx_replenish
, il3945_bg_rx_replenish
);
3406 INIT_DELAYED_WORK(&il
->init_alive_start
, il3945_bg_init_alive_start
);
3407 INIT_DELAYED_WORK(&il
->alive_start
, il3945_bg_alive_start
);
3408 INIT_DELAYED_WORK(&il
->_3945
.rfkill_poll
, il3945_rfkill_poll
);
3410 il_setup_scan_deferred_work(il
);
3412 il3945_hw_setup_deferred_work(il
);
3414 init_timer(&il
->watchdog
);
3415 il
->watchdog
.data
= (unsigned long)il
;
3416 il
->watchdog
.function
= il_bg_watchdog
;
3418 tasklet_init(&il
->irq_tasklet
,
3419 (void (*)(unsigned long))il3945_irq_tasklet
,
3424 il3945_cancel_deferred_work(struct il_priv
*il
)
3426 il3945_hw_cancel_deferred_work(il
);
3428 cancel_delayed_work_sync(&il
->init_alive_start
);
3429 cancel_delayed_work(&il
->alive_start
);
3431 il_cancel_scan_deferred_work(il
);
3434 static struct attribute
*il3945_sysfs_entries
[] = {
3435 &dev_attr_antenna
.attr
,
3436 &dev_attr_channels
.attr
,
3437 &dev_attr_dump_errors
.attr
,
3438 &dev_attr_flags
.attr
,
3439 &dev_attr_filter_flags
.attr
,
3440 &dev_attr_measurement
.attr
,
3441 &dev_attr_retry_rate
.attr
,
3442 &dev_attr_status
.attr
,
3443 &dev_attr_temperature
.attr
,
3444 &dev_attr_tx_power
.attr
,
3445 #ifdef CONFIG_IWLEGACY_DEBUG
3446 &dev_attr_debug_level
.attr
,
3451 static struct attribute_group il3945_attribute_group
= {
3452 .name
= NULL
, /* put in device directory */
3453 .attrs
= il3945_sysfs_entries
,
3456 struct ieee80211_ops il3945_mac_ops
= {
3457 .tx
= il3945_mac_tx
,
3458 .start
= il3945_mac_start
,
3459 .stop
= il3945_mac_stop
,
3460 .add_interface
= il_mac_add_interface
,
3461 .remove_interface
= il_mac_remove_interface
,
3462 .change_interface
= il_mac_change_interface
,
3463 .config
= il_mac_config
,
3464 .configure_filter
= il3945_configure_filter
,
3465 .set_key
= il3945_mac_set_key
,
3466 .conf_tx
= il_mac_conf_tx
,
3467 .reset_tsf
= il_mac_reset_tsf
,
3468 .bss_info_changed
= il_mac_bss_info_changed
,
3469 .hw_scan
= il_mac_hw_scan
,
3470 .sta_add
= il3945_mac_sta_add
,
3471 .sta_remove
= il_mac_sta_remove
,
3472 .tx_last_beacon
= il_mac_tx_last_beacon
,
3476 il3945_init_drv(struct il_priv
*il
)
3479 struct il3945_eeprom
*eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
3482 il
->beacon_skb
= NULL
;
3484 spin_lock_init(&il
->sta_lock
);
3485 spin_lock_init(&il
->hcmd_lock
);
3487 INIT_LIST_HEAD(&il
->free_frames
);
3489 mutex_init(&il
->mutex
);
3491 il
->ieee_channels
= NULL
;
3492 il
->ieee_rates
= NULL
;
3493 il
->band
= IEEE80211_BAND_2GHZ
;
3495 il
->iw_mode
= NL80211_IFTYPE_STATION
;
3496 il
->missed_beacon_threshold
= IL_MISSED_BEACON_THRESHOLD_DEF
;
3498 /* initialize force reset */
3499 il
->force_reset
.reset_duration
= IL_DELAY_NEXT_FORCE_FW_RELOAD
;
3501 if (eeprom
->version
< EEPROM_3945_EEPROM_VERSION
) {
3502 IL_WARN("Unsupported EEPROM version: 0x%04X\n",
3507 ret
= il_init_channel_map(il
);
3509 IL_ERR("initializing regulatory failed: %d\n", ret
);
3513 /* Set up txpower settings in driver for all channels */
3514 if (il3945_txpower_set_from_eeprom(il
)) {
3516 goto err_free_channel_map
;
3519 ret
= il_init_geos(il
);
3521 IL_ERR("initializing geos failed: %d\n", ret
);
3522 goto err_free_channel_map
;
3524 il3945_init_hw_rates(il
, il
->ieee_rates
);
3528 err_free_channel_map
:
3529 il_free_channel_map(il
);
3534 #define IL3945_MAX_PROBE_REQUEST 200
3537 il3945_setup_mac(struct il_priv
*il
)
3540 struct ieee80211_hw
*hw
= il
->hw
;
3542 hw
->rate_control_algorithm
= "iwl-3945-rs";
3543 hw
->sta_data_size
= sizeof(struct il3945_sta_priv
);
3544 hw
->vif_data_size
= sizeof(struct il_vif_priv
);
3546 /* Tell mac80211 our characteristics */
3547 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_SPECTRUM_MGMT
;
3549 hw
->wiphy
->interface_modes
=
3550 BIT(NL80211_IFTYPE_STATION
) | BIT(NL80211_IFTYPE_ADHOC
);
3553 WIPHY_FLAG_CUSTOM_REGULATORY
| WIPHY_FLAG_DISABLE_BEACON_HINTS
|
3554 WIPHY_FLAG_IBSS_RSN
;
3556 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX_3945
;
3557 /* we create the 802.11 header and a zero-length SSID element */
3558 hw
->wiphy
->max_scan_ie_len
= IL3945_MAX_PROBE_REQUEST
- 24 - 2;
3560 /* Default value; 4 EDCA QOS priorities */
3563 if (il
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
3564 il
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
3565 &il
->bands
[IEEE80211_BAND_2GHZ
];
3567 if (il
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
3568 il
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
3569 &il
->bands
[IEEE80211_BAND_5GHZ
];
3573 ret
= ieee80211_register_hw(il
->hw
);
3575 IL_ERR("Failed to register hw (error %d)\n", ret
);
3578 il
->mac80211_registered
= 1;
3584 il3945_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3588 struct ieee80211_hw
*hw
;
3589 struct il_cfg
*cfg
= (struct il_cfg
*)(ent
->driver_data
);
3590 struct il3945_eeprom
*eeprom
;
3591 unsigned long flags
;
3593 /***********************
3594 * 1. Allocating HW data
3595 * ********************/
3597 hw
= ieee80211_alloc_hw(sizeof(struct il_priv
), &il3945_mac_ops
);
3604 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3606 il
->cmd_queue
= IL39_CMD_QUEUE_NUM
;
3609 * Disabling hardware scan means that mac80211 will perform scans
3610 * "the hard way", rather than using device's scan.
3612 if (il3945_mod_params
.disable_hw_scan
) {
3613 D_INFO("Disabling hw_scan\n");
3614 il3945_mac_ops
.hw_scan
= NULL
;
3617 D_INFO("*** LOAD DRIVER ***\n");
3619 il
->ops
= &il3945_ops
;
3620 #ifdef CONFIG_IWLEGACY_DEBUGFS
3621 il
->debugfs_ops
= &il3945_debugfs_ops
;
3624 il
->inta_mask
= CSR_INI_SET_MASK
;
3626 /***************************
3627 * 2. Initializing PCI bus
3628 * *************************/
3629 pci_disable_link_state(pdev
,
3630 PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
|
3631 PCIE_LINK_STATE_CLKPM
);
3633 if (pci_enable_device(pdev
)) {
3635 goto out_ieee80211_free_hw
;
3638 pci_set_master(pdev
);
3640 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3642 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3644 IL_WARN("No suitable DMA available.\n");
3645 goto out_pci_disable_device
;
3648 pci_set_drvdata(pdev
, il
);
3649 err
= pci_request_regions(pdev
, DRV_NAME
);
3651 goto out_pci_disable_device
;
3653 /***********************
3654 * 3. Read REV Register
3655 * ********************/
3656 il
->hw_base
= pci_ioremap_bar(pdev
, 0);
3659 goto out_pci_release_regions
;
3662 D_INFO("pci_resource_len = 0x%08llx\n",
3663 (unsigned long long)pci_resource_len(pdev
, 0));
3664 D_INFO("pci_resource_base = %p\n", il
->hw_base
);
3666 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3667 * PCI Tx retries from interfering with C3 CPU state */
3668 pci_write_config_byte(pdev
, 0x41, 0x00);
3670 /* these spin locks will be used in apm_init and EEPROM access
3671 * we should init now
3673 spin_lock_init(&il
->reg_lock
);
3674 spin_lock_init(&il
->lock
);
3677 * stop and reset the on-board processor just in case it is in a
3678 * strange state ... like being left stranded by a primary kernel
3679 * and this is now the kdump kernel trying to start up
3681 _il_wr(il
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
3683 /***********************
3685 * ********************/
3687 /* Read the EEPROM */
3688 err
= il_eeprom_init(il
);
3690 IL_ERR("Unable to init EEPROM\n");
3693 /* MAC Address location in EEPROM same for 3945/4965 */
3694 eeprom
= (struct il3945_eeprom
*)il
->eeprom
;
3695 D_INFO("MAC address: %pM\n", eeprom
->mac_address
);
3696 SET_IEEE80211_PERM_ADDR(il
->hw
, eeprom
->mac_address
);
3698 /***********************
3699 * 5. Setup HW Constants
3700 * ********************/
3701 /* Device-specific setup */
3702 if (il3945_hw_set_hw_params(il
)) {
3703 IL_ERR("failed to set hw settings\n");
3704 goto out_eeprom_free
;
3707 /***********************
3709 * ********************/
3711 err
= il3945_init_drv(il
);
3713 IL_ERR("initializing driver failed\n");
3714 goto out_unset_hw_params
;
3717 IL_INFO("Detected Intel Wireless WiFi Link %s\n", il
->cfg
->name
);
3719 /***********************
3721 * ********************/
3723 spin_lock_irqsave(&il
->lock
, flags
);
3724 il_disable_interrupts(il
);
3725 spin_unlock_irqrestore(&il
->lock
, flags
);
3727 pci_enable_msi(il
->pci_dev
);
3729 err
= request_irq(il
->pci_dev
->irq
, il_isr
, IRQF_SHARED
, DRV_NAME
, il
);
3731 IL_ERR("Error allocating IRQ %d\n", il
->pci_dev
->irq
);
3732 goto out_disable_msi
;
3735 err
= sysfs_create_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3737 IL_ERR("failed to create sysfs device attributes\n");
3738 goto out_release_irq
;
3741 il_set_rxon_channel(il
, &il
->bands
[IEEE80211_BAND_2GHZ
].channels
[5]);
3742 il3945_setup_deferred_work(il
);
3743 il3945_setup_handlers(il
);
3744 il_power_initialize(il
);
3746 /*********************************
3747 * 8. Setup and Register mac80211
3748 * *******************************/
3750 il_enable_interrupts(il
);
3752 err
= il3945_setup_mac(il
);
3754 goto out_remove_sysfs
;
3756 err
= il_dbgfs_register(il
, DRV_NAME
);
3758 IL_ERR("failed to create debugfs files. Ignoring error: %d\n",
3761 /* Start monitoring the killswitch */
3762 queue_delayed_work(il
->workqueue
, &il
->_3945
.rfkill_poll
, 2 * HZ
);
3767 destroy_workqueue(il
->workqueue
);
3768 il
->workqueue
= NULL
;
3769 sysfs_remove_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3771 free_irq(il
->pci_dev
->irq
, il
);
3773 pci_disable_msi(il
->pci_dev
);
3775 il_free_channel_map(il
);
3776 out_unset_hw_params
:
3777 il3945_unset_hw_params(il
);
3781 iounmap(il
->hw_base
);
3782 out_pci_release_regions
:
3783 pci_release_regions(pdev
);
3784 out_pci_disable_device
:
3785 pci_set_drvdata(pdev
, NULL
);
3786 pci_disable_device(pdev
);
3787 out_ieee80211_free_hw
:
3788 ieee80211_free_hw(il
->hw
);
3793 static void __devexit
3794 il3945_pci_remove(struct pci_dev
*pdev
)
3796 struct il_priv
*il
= pci_get_drvdata(pdev
);
3797 unsigned long flags
;
3802 D_INFO("*** UNLOAD DRIVER ***\n");
3804 il_dbgfs_unregister(il
);
3806 set_bit(S_EXIT_PENDING
, &il
->status
);
3810 if (il
->mac80211_registered
) {
3811 ieee80211_unregister_hw(il
->hw
);
3812 il
->mac80211_registered
= 0;
3818 * Make sure device is reset to low power before unloading driver.
3819 * This may be redundant with il_down(), but there are paths to
3820 * run il_down() without calling apm_ops.stop(), and there are
3821 * paths to avoid running il_down() at all before leaving driver.
3822 * This (inexpensive) call *makes sure* device is reset.
3826 /* make sure we flush any pending irq or
3827 * tasklet for the driver
3829 spin_lock_irqsave(&il
->lock
, flags
);
3830 il_disable_interrupts(il
);
3831 spin_unlock_irqrestore(&il
->lock
, flags
);
3833 il3945_synchronize_irq(il
);
3835 sysfs_remove_group(&pdev
->dev
.kobj
, &il3945_attribute_group
);
3837 cancel_delayed_work_sync(&il
->_3945
.rfkill_poll
);
3839 il3945_dealloc_ucode_pci(il
);
3842 il3945_rx_queue_free(il
, &il
->rxq
);
3843 il3945_hw_txq_ctx_free(il
);
3845 il3945_unset_hw_params(il
);
3847 /*netif_stop_queue(dev); */
3848 flush_workqueue(il
->workqueue
);
3850 /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes
3851 * il->workqueue... so we can't take down the workqueue
3853 destroy_workqueue(il
->workqueue
);
3854 il
->workqueue
= NULL
;
3856 free_irq(pdev
->irq
, il
);
3857 pci_disable_msi(pdev
);
3859 iounmap(il
->hw_base
);
3860 pci_release_regions(pdev
);
3861 pci_disable_device(pdev
);
3862 pci_set_drvdata(pdev
, NULL
);
3864 il_free_channel_map(il
);
3866 kfree(il
->scan_cmd
);
3868 dev_kfree_skb(il
->beacon_skb
);
3870 ieee80211_free_hw(il
->hw
);
3873 /*****************************************************************************
3875 * driver and module entry point
3877 *****************************************************************************/
3879 static struct pci_driver il3945_driver
= {
3881 .id_table
= il3945_hw_card_ids
,
3882 .probe
= il3945_pci_probe
,
3883 .remove
= __devexit_p(il3945_pci_remove
),
3884 .driver
.pm
= IL_LEGACY_PM_OPS
,
3892 pr_info(DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3893 pr_info(DRV_COPYRIGHT
"\n");
3895 ret
= il3945_rate_control_register();
3897 pr_err("Unable to register rate control algorithm: %d\n", ret
);
3901 ret
= pci_register_driver(&il3945_driver
);
3903 pr_err("Unable to initialize PCI module\n");
3904 goto error_register
;
3910 il3945_rate_control_unregister();
3917 pci_unregister_driver(&il3945_driver
);
3918 il3945_rate_control_unregister();
3921 MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX
));
3923 module_param_named(antenna
, il3945_mod_params
.antenna
, int, S_IRUGO
);
3924 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
3925 module_param_named(swcrypto
, il3945_mod_params
.sw_crypto
, int, S_IRUGO
);
3926 MODULE_PARM_DESC(swcrypto
, "using software crypto (default 1 [software])");
3927 module_param_named(disable_hw_scan
, il3945_mod_params
.disable_hw_scan
, int,
3929 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 1)");
3930 #ifdef CONFIG_IWLEGACY_DEBUG
3931 module_param_named(debug
, il_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
3932 MODULE_PARM_DESC(debug
, "debug output mask");
3934 module_param_named(fw_restart
, il3945_mod_params
.restart_fw
, int, S_IRUGO
);
3935 MODULE_PARM_DESC(fw_restart
, "restart firmware in case of error");
3937 module_exit(il3945_exit
);
3938 module_init(il3945_init
);