1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/mac80211.h>
45 #include <asm/div64.h>
47 #define DRV_NAME "iwlagn"
49 #include "iwl-eeprom.h"
53 #include "iwl-helpers.h"
55 #include "iwl-calib.h"
58 /******************************************************************************
62 ******************************************************************************/
65 * module name, copyright, version, etc.
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
84 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
85 MODULE_VERSION(DRV_VERSION
);
86 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
95 /**************************************************************/
98 * iwl_commit_rxon - commit staging_rxon to hardware
100 * The RXON command in staging_rxon is committed to the hardware and
101 * the active_rxon structure is updated with the new data. This
102 * function correctly transitions out of the RXON_ASSOC_MSK state if
103 * a HW tune is required based on the RXON structure changes.
105 int iwl_commit_rxon(struct iwl_priv
*priv
)
107 /* cast away the const for active_rxon in this function */
108 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
111 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
113 if (!iwl_is_alive(priv
))
116 /* always get timestamp with Rx frame */
117 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
118 /* allow CTS-to-self if possible. this is relevant only for
119 * 5000, but will not damage 4965 */
120 priv
->staging_rxon
.flags
|= RXON_FLG_SELF_CTS_EN
;
122 ret
= iwl_check_rxon_cmd(priv
);
124 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
128 /* If we don't need to send a full RXON, we can use
129 * iwl_rxon_assoc_cmd which is used to reconfigure filter
130 * and other flags for the current radio configuration. */
131 if (!iwl_full_rxon_required(priv
)) {
132 ret
= iwl_send_rxon_assoc(priv
);
134 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
138 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
142 /* station table will be cleared */
143 priv
->assoc_station_added
= 0;
145 /* If we are currently associated and the new config requires
146 * an RXON_ASSOC and the new config wants the associated mask enabled,
147 * we must clear the associated from the active configuration
148 * before we apply the new config */
149 if (iwl_is_associated(priv
) && new_assoc
) {
150 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
151 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
153 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
154 sizeof(struct iwl_rxon_cmd
),
157 /* If the mask clearing failed then we set
158 * active_rxon back to what it was previously */
160 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
161 IWL_ERR(priv
, "Error clearing ASSOC_MSK (%d)\n", ret
);
166 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
167 "* with%s RXON_FILTER_ASSOC_MSK\n"
170 (new_assoc
? "" : "out"),
171 le16_to_cpu(priv
->staging_rxon
.channel
),
172 priv
->staging_rxon
.bssid_addr
);
174 iwl_set_rxon_hwcrypto(priv
, !priv
->hw_params
.sw_crypto
);
176 /* Apply the new configuration
177 * RXON unassoc clears the station table in uCode, send it before
178 * we add the bcast station. If assoc bit is set, we will send RXON
179 * after having added the bcast and bssid station.
182 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
183 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
185 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
188 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
191 iwl_clear_stations_table(priv
);
193 priv
->start_calib
= 0;
195 /* Add the broadcast address so we can send broadcast frames */
196 if (iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0) ==
197 IWL_INVALID_STATION
) {
198 IWL_ERR(priv
, "Error adding BROADCAST address for transmit.\n");
202 /* If we have set the ASSOC_MSK and we are in BSS mode then
203 * add the IWL_AP_ID to the station rate table */
205 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
206 ret
= iwl_rxon_add_station(priv
,
207 priv
->active_rxon
.bssid_addr
, 1);
208 if (ret
== IWL_INVALID_STATION
) {
210 "Error adding AP address for TX.\n");
213 priv
->assoc_station_added
= 1;
214 if (priv
->default_wep_key
&&
215 iwl_send_static_wepkey_cmd(priv
, 0))
217 "Could not send WEP static key.\n");
220 /* Apply the new configuration
221 * RXON assoc doesn't clear the station table in uCode,
223 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
224 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
226 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
229 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
232 iwl_init_sensitivity(priv
);
234 /* If we issue a new RXON command which required a tune then we must
235 * send a new TXPOWER command or we won't be able to Tx any frames */
236 ret
= iwl_set_tx_power(priv
, priv
->tx_power_user_lmt
, true);
238 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
245 void iwl_update_chain_flags(struct iwl_priv
*priv
)
248 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
249 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
250 iwlcore_commit_rxon(priv
);
253 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
255 struct list_head
*element
;
257 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
260 while (!list_empty(&priv
->free_frames
)) {
261 element
= priv
->free_frames
.next
;
263 kfree(list_entry(element
, struct iwl_frame
, list
));
264 priv
->frames_count
--;
267 if (priv
->frames_count
) {
268 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
270 priv
->frames_count
= 0;
274 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
276 struct iwl_frame
*frame
;
277 struct list_head
*element
;
278 if (list_empty(&priv
->free_frames
)) {
279 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
281 IWL_ERR(priv
, "Could not allocate frame!\n");
285 priv
->frames_count
++;
289 element
= priv
->free_frames
.next
;
291 return list_entry(element
, struct iwl_frame
, list
);
294 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
296 memset(frame
, 0, sizeof(*frame
));
297 list_add(&frame
->list
, &priv
->free_frames
);
300 static unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
301 struct ieee80211_hdr
*hdr
,
304 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
305 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
306 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
309 if (priv
->ibss_beacon
->len
> left
)
312 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
314 return priv
->ibss_beacon
->len
;
317 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
318 struct iwl_frame
*frame
, u8 rate
)
320 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
321 unsigned int frame_size
;
323 tx_beacon_cmd
= &frame
->u
.beacon
;
324 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
326 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
327 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
329 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
330 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
332 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
333 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
335 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
336 tx_beacon_cmd
->tx
.rate_n_flags
=
337 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
339 tx_beacon_cmd
->tx
.rate_n_flags
=
340 iwl_hw_set_rate_n_flags(rate
, 0);
342 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
344 TX_CMD_FLG_STA_RATE_MSK
;
346 return sizeof(*tx_beacon_cmd
) + frame_size
;
348 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
350 struct iwl_frame
*frame
;
351 unsigned int frame_size
;
355 frame
= iwl_get_free_frame(priv
);
358 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
363 rate
= iwl_rate_get_lowest_plcp(priv
);
365 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
367 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
370 iwl_free_frame(priv
, frame
);
375 static inline dma_addr_t
iwl_tfd_tb_get_addr(struct iwl_tfd
*tfd
, u8 idx
)
377 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
379 dma_addr_t addr
= get_unaligned_le32(&tb
->lo
);
380 if (sizeof(dma_addr_t
) > sizeof(u32
))
382 ((dma_addr_t
)(le16_to_cpu(tb
->hi_n_len
) & 0xF) << 16) << 16;
387 static inline u16
iwl_tfd_tb_get_len(struct iwl_tfd
*tfd
, u8 idx
)
389 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
391 return le16_to_cpu(tb
->hi_n_len
) >> 4;
394 static inline void iwl_tfd_set_tb(struct iwl_tfd
*tfd
, u8 idx
,
395 dma_addr_t addr
, u16 len
)
397 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
398 u16 hi_n_len
= len
<< 4;
400 put_unaligned_le32(addr
, &tb
->lo
);
401 if (sizeof(dma_addr_t
) > sizeof(u32
))
402 hi_n_len
|= ((addr
>> 16) >> 16) & 0xF;
404 tb
->hi_n_len
= cpu_to_le16(hi_n_len
);
406 tfd
->num_tbs
= idx
+ 1;
409 static inline u8
iwl_tfd_get_num_tbs(struct iwl_tfd
*tfd
)
411 return tfd
->num_tbs
& 0x1f;
415 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
416 * @priv - driver private data
419 * Does NOT advance any TFD circular buffer read/write indexes
420 * Does NOT free the TFD itself (which is within circular buffer)
422 void iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
424 struct iwl_tfd
*tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
426 struct pci_dev
*dev
= priv
->pci_dev
;
427 int index
= txq
->q
.read_ptr
;
431 tfd
= &tfd_tmp
[index
];
433 /* Sanity check on number of chunks */
434 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
436 if (num_tbs
>= IWL_NUM_OF_TBS
) {
437 IWL_ERR(priv
, "Too many chunks: %i\n", num_tbs
);
438 /* @todo issue fatal error, it is quite serious situation */
444 pci_unmap_single(dev
,
445 pci_unmap_addr(&txq
->cmd
[index
]->meta
, mapping
),
446 pci_unmap_len(&txq
->cmd
[index
]->meta
, len
),
447 PCI_DMA_BIDIRECTIONAL
);
449 /* Unmap chunks, if any. */
450 for (i
= 1; i
< num_tbs
; i
++) {
451 pci_unmap_single(dev
, iwl_tfd_tb_get_addr(tfd
, i
),
452 iwl_tfd_tb_get_len(tfd
, i
), PCI_DMA_TODEVICE
);
455 dev_kfree_skb(txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1]);
456 txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1] = NULL
;
461 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
462 struct iwl_tx_queue
*txq
,
463 dma_addr_t addr
, u16 len
,
467 struct iwl_tfd
*tfd
, *tfd_tmp
;
471 tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
472 tfd
= &tfd_tmp
[q
->write_ptr
];
475 memset(tfd
, 0, sizeof(*tfd
));
477 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
479 /* Each TFD can point to a maximum 20 Tx buffers */
480 if (num_tbs
>= IWL_NUM_OF_TBS
) {
481 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
486 BUG_ON(addr
& ~DMA_BIT_MASK(36));
487 if (unlikely(addr
& ~IWL_TX_DMA_MASK
))
488 IWL_ERR(priv
, "Unaligned address = %llx\n",
489 (unsigned long long)addr
);
491 iwl_tfd_set_tb(tfd
, num_tbs
, addr
, len
);
497 * Tell nic where to find circular buffer of Tx Frame Descriptors for
498 * given Tx queue, and enable the DMA channel used for that queue.
500 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
501 * channels supported in hardware.
503 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
,
504 struct iwl_tx_queue
*txq
)
506 int txq_id
= txq
->q
.id
;
508 /* Circular buffer (TFD queue in DRAM) physical base address */
509 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
510 txq
->q
.dma_addr
>> 8);
516 /******************************************************************************
518 * Misc. internal state and helper functions
520 ******************************************************************************/
522 #define MAX_UCODE_BEACON_INTERVAL 4096
524 static u16
iwl_adjust_beacon_interval(u16 beacon_val
)
527 u16 beacon_factor
= 0;
529 beacon_factor
= (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
530 / MAX_UCODE_BEACON_INTERVAL
;
531 new_val
= beacon_val
/ beacon_factor
;
534 new_val
= MAX_UCODE_BEACON_INTERVAL
;
539 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
542 s32 interval_tm
, rem
;
544 struct ieee80211_conf
*conf
= NULL
;
547 conf
= ieee80211_get_hw_conf(priv
->hw
);
549 spin_lock_irqsave(&priv
->lock
, flags
);
550 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
551 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
553 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
554 beacon_int
= iwl_adjust_beacon_interval(priv
->beacon_int
);
555 priv
->rxon_timing
.atim_window
= 0;
557 beacon_int
= iwl_adjust_beacon_interval(
558 priv
->vif
->bss_conf
.beacon_int
);
560 /* TODO: we need to get atim_window from upper stack
561 * for now we set to 0 */
562 priv
->rxon_timing
.atim_window
= 0;
565 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
567 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
568 interval_tm
= beacon_int
* 1024;
569 rem
= do_div(tsf
, interval_tm
);
570 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
572 spin_unlock_irqrestore(&priv
->lock
, flags
);
573 IWL_DEBUG_ASSOC(priv
, "beacon interval %d beacon timer %d beacon tim %d\n",
574 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
575 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
576 le16_to_cpu(priv
->rxon_timing
.atim_window
));
579 /******************************************************************************
581 * Generic RX handler implementations
583 ******************************************************************************/
584 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
585 struct iwl_rx_mem_buffer
*rxb
)
587 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
588 struct iwl_alive_resp
*palive
;
589 struct delayed_work
*pwork
;
591 palive
= &pkt
->u
.alive_frame
;
593 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
595 palive
->is_valid
, palive
->ver_type
,
596 palive
->ver_subtype
);
598 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
599 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
600 memcpy(&priv
->card_alive_init
,
602 sizeof(struct iwl_init_alive_resp
));
603 pwork
= &priv
->init_alive_start
;
605 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
606 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
607 sizeof(struct iwl_alive_resp
));
608 pwork
= &priv
->alive_start
;
611 /* We delay the ALIVE response by 5ms to
612 * give the HW RF Kill time to activate... */
613 if (palive
->is_valid
== UCODE_VALID_OK
)
614 queue_delayed_work(priv
->workqueue
, pwork
,
615 msecs_to_jiffies(5));
617 IWL_WARN(priv
, "uCode did not respond OK.\n");
620 static void iwl_bg_beacon_update(struct work_struct
*work
)
622 struct iwl_priv
*priv
=
623 container_of(work
, struct iwl_priv
, beacon_update
);
624 struct sk_buff
*beacon
;
626 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
627 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
630 IWL_ERR(priv
, "update beacon failed\n");
634 mutex_lock(&priv
->mutex
);
635 /* new beacon skb is allocated every time; dispose previous.*/
636 if (priv
->ibss_beacon
)
637 dev_kfree_skb(priv
->ibss_beacon
);
639 priv
->ibss_beacon
= beacon
;
640 mutex_unlock(&priv
->mutex
);
642 iwl_send_beacon_cmd(priv
);
646 * iwl_bg_statistics_periodic - Timer callback to queue statistics
648 * This callback is provided in order to send a statistics request.
650 * This timer function is continually reset to execute within
651 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
652 * was received. We need to ensure we receive the statistics in order
653 * to update the temperature used for calibrating the TXPOWER.
655 static void iwl_bg_statistics_periodic(unsigned long data
)
657 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
659 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
662 /* dont send host command if rf-kill is on */
663 if (!iwl_is_ready_rf(priv
))
666 iwl_send_statistics_request(priv
, CMD_ASYNC
);
669 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
670 struct iwl_rx_mem_buffer
*rxb
)
672 #ifdef CONFIG_IWLWIFI_DEBUG
673 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
674 struct iwl4965_beacon_notif
*beacon
=
675 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
676 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
678 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
679 "tsf %d %d rate %d\n",
680 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
681 beacon
->beacon_notify_hdr
.failure_frame
,
682 le32_to_cpu(beacon
->ibss_mgr_status
),
683 le32_to_cpu(beacon
->high_tsf
),
684 le32_to_cpu(beacon
->low_tsf
), rate
);
687 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
688 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
689 queue_work(priv
->workqueue
, &priv
->beacon_update
);
692 /* Handle notification from uCode that card's power state is changing
693 * due to software, hardware, or critical temperature RFKILL */
694 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
695 struct iwl_rx_mem_buffer
*rxb
)
697 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
698 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
699 unsigned long status
= priv
->status
;
700 unsigned long reg_flags
;
702 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
703 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
704 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
706 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
709 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
710 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
712 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
713 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
715 if (!(flags
& RXON_CARD_DISABLED
)) {
716 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
717 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
718 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
719 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
723 if (flags
& RF_CARD_DISABLED
) {
724 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
725 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
726 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
727 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
728 if (!iwl_grab_nic_access(priv
))
729 iwl_release_nic_access(priv
);
730 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
734 if (flags
& HW_CARD_DISABLED
)
735 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
737 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
740 if (!(flags
& RXON_CARD_DISABLED
))
741 iwl_scan_cancel(priv
);
743 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
744 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
745 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
746 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
748 wake_up_interruptible(&priv
->wait_command_queue
);
751 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
753 if (src
== IWL_PWR_SRC_VAUX
) {
754 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
755 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
756 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
757 ~APMG_PS_CTRL_MSK_PWR_SRC
);
759 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
760 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
761 ~APMG_PS_CTRL_MSK_PWR_SRC
);
768 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
770 * Setup the RX handlers for each of the reply types sent from the uCode
773 * This function chains into the hardware specific files for them to setup
774 * any hardware specific handlers as well.
776 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
778 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
779 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
780 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
781 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
782 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
783 iwl_rx_pm_debug_statistics_notif
;
784 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
787 * The same handler is used for both the REPLY to a discrete
788 * statistics request from the host as well as for the periodic
789 * statistics notifications (after received beacons) from the uCode.
791 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
792 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
794 iwl_setup_spectrum_handlers(priv
);
795 iwl_setup_rx_scan_handlers(priv
);
797 /* status change handler */
798 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
800 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
801 iwl_rx_missed_beacon_notif
;
803 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
804 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
806 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
807 /* Set up hardware specific Rx handlers */
808 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
812 * iwl_rx_handle - Main entry function for receiving responses from uCode
814 * Uses the priv->rx_handlers callback function array to invoke
815 * the appropriate handlers, including command responses,
816 * frame-received notifications, and other notifications.
818 void iwl_rx_handle(struct iwl_priv
*priv
)
820 struct iwl_rx_mem_buffer
*rxb
;
821 struct iwl_rx_packet
*pkt
;
822 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
830 /* uCode's read index (stored in shared DRAM) indicates the last Rx
831 * buffer that the driver may process (last buffer filled by ucode). */
832 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
835 /* Rx interrupt, but nothing sent from uCode */
837 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
839 /* calculate total frames need to be restock after handling RX */
840 total_empty
= r
- priv
->rxq
.write_actual
;
842 total_empty
+= RX_QUEUE_SIZE
;
844 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
850 /* If an RXB doesn't have a Rx queue slot associated with it,
851 * then a bug has been introduced in the queue refilling
852 * routines -- catch it here */
855 rxq
->queue
[i
] = NULL
;
857 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
858 priv
->hw_params
.rx_buf_size
+ 256,
860 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
862 /* Reclaim a command buffer only if this packet is a response
863 * to a (driver-originated) command.
864 * If the packet (e.g. Rx frame) originated from uCode,
865 * there is no command buffer to reclaim.
866 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
867 * but apparently a few don't get set; catch them here. */
868 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
869 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
870 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
871 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
872 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
873 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
874 (pkt
->hdr
.cmd
!= REPLY_TX
);
876 /* Based on type of command response or notification,
877 * handle those that need handling via function in
878 * rx_handlers table. See iwl_setup_rx_handlers() */
879 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
880 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
881 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
882 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
883 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
885 /* No handling needed */
887 "r %d i %d No handler needed for %s, 0x%02x\n",
888 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
893 /* Invoke any callbacks, transfer the skb to caller, and
894 * fire off the (possibly) blocking iwl_send_cmd()
895 * as we reclaim the driver command queue */
897 iwl_tx_cmd_complete(priv
, rxb
);
899 IWL_WARN(priv
, "Claim null rxb?\n");
902 /* For now we just don't re-use anything. We can tweak this
903 * later to try and re-use notification packets and SKBs that
904 * fail to Rx correctly */
905 if (rxb
->skb
!= NULL
) {
906 priv
->alloc_rxb_skb
--;
907 dev_kfree_skb_any(rxb
->skb
);
911 spin_lock_irqsave(&rxq
->lock
, flags
);
912 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
913 spin_unlock_irqrestore(&rxq
->lock
, flags
);
914 i
= (i
+ 1) & RX_QUEUE_MASK
;
915 /* If there are a lot of unused frames,
916 * restock the Rx queue so ucode wont assert. */
921 iwl_rx_replenish_now(priv
);
927 /* Backtrack one entry */
930 iwl_rx_replenish_now(priv
);
932 iwl_rx_queue_restock(priv
);
935 /* call this function to flush any scheduled tasklet */
936 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
938 /* wait to make sure we flush pending tasklet*/
939 synchronize_irq(priv
->pci_dev
->irq
);
940 tasklet_kill(&priv
->irq_tasklet
);
943 static void iwl_irq_tasklet_legacy(struct iwl_priv
*priv
)
945 u32 inta
, handled
= 0;
948 #ifdef CONFIG_IWLWIFI_DEBUG
952 spin_lock_irqsave(&priv
->lock
, flags
);
954 /* Ack/clear/reset pending uCode interrupts.
955 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
956 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
957 inta
= iwl_read32(priv
, CSR_INT
);
958 iwl_write32(priv
, CSR_INT
, inta
);
960 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
961 * Any new interrupts that happen after this, either while we're
962 * in this tasklet, or later, will show up in next ISR/tasklet. */
963 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
964 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
966 #ifdef CONFIG_IWLWIFI_DEBUG
967 if (priv
->debug_level
& IWL_DL_ISR
) {
969 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
970 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
971 inta
, inta_mask
, inta_fh
);
975 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
976 * atomic, make sure that inta covers all the interrupts that
977 * we've discovered, even if FH interrupt came in just after
978 * reading CSR_INT. */
979 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
980 inta
|= CSR_INT_BIT_FH_RX
;
981 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
982 inta
|= CSR_INT_BIT_FH_TX
;
984 /* Now service all interrupt bits discovered above. */
985 if (inta
& CSR_INT_BIT_HW_ERR
) {
986 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
988 /* Tell the device to stop sending interrupts */
989 iwl_disable_interrupts(priv
);
991 priv
->isr_stats
.hw
++;
992 iwl_irq_handle_error(priv
);
994 handled
|= CSR_INT_BIT_HW_ERR
;
996 spin_unlock_irqrestore(&priv
->lock
, flags
);
1001 #ifdef CONFIG_IWLWIFI_DEBUG
1002 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1003 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1004 if (inta
& CSR_INT_BIT_SCD
) {
1005 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1006 "the frame/frames.\n");
1007 priv
->isr_stats
.sch
++;
1010 /* Alive notification via Rx interrupt will do the real work */
1011 if (inta
& CSR_INT_BIT_ALIVE
) {
1012 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1013 priv
->isr_stats
.alive
++;
1017 /* Safely ignore these bits for debug checks below */
1018 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1020 /* HW RF KILL switch toggled */
1021 if (inta
& CSR_INT_BIT_RF_KILL
) {
1023 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1024 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1027 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1028 hw_rf_kill
? "disable radio" : "enable radio");
1030 priv
->isr_stats
.rfkill
++;
1032 /* driver only loads ucode once setting the interface up.
1033 * the driver allows loading the ucode even if the radio
1034 * is killed. Hence update the killswitch state here. The
1035 * rfkill handler will care about restarting if needed.
1037 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1039 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1041 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1042 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1045 handled
|= CSR_INT_BIT_RF_KILL
;
1048 /* Chip got too hot and stopped itself */
1049 if (inta
& CSR_INT_BIT_CT_KILL
) {
1050 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1051 priv
->isr_stats
.ctkill
++;
1052 handled
|= CSR_INT_BIT_CT_KILL
;
1055 /* Error detected by uCode */
1056 if (inta
& CSR_INT_BIT_SW_ERR
) {
1057 IWL_ERR(priv
, "Microcode SW error detected. "
1058 " Restarting 0x%X.\n", inta
);
1059 priv
->isr_stats
.sw
++;
1060 priv
->isr_stats
.sw_err
= inta
;
1061 iwl_irq_handle_error(priv
);
1062 handled
|= CSR_INT_BIT_SW_ERR
;
1065 /* uCode wakes up after power-down sleep */
1066 if (inta
& CSR_INT_BIT_WAKEUP
) {
1067 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1068 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1069 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1070 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1071 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1072 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1073 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1074 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1076 priv
->isr_stats
.wakeup
++;
1078 handled
|= CSR_INT_BIT_WAKEUP
;
1081 /* All uCode command responses, including Tx command responses,
1082 * Rx "responses" (frame-received notification), and other
1083 * notifications from uCode come through here*/
1084 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1085 iwl_rx_handle(priv
);
1086 priv
->isr_stats
.rx
++;
1087 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1090 if (inta
& CSR_INT_BIT_FH_TX
) {
1091 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1092 priv
->isr_stats
.tx
++;
1093 handled
|= CSR_INT_BIT_FH_TX
;
1094 /* FH finished to write, send event */
1095 priv
->ucode_write_complete
= 1;
1096 wake_up_interruptible(&priv
->wait_command_queue
);
1099 if (inta
& ~handled
) {
1100 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1101 priv
->isr_stats
.unhandled
++;
1104 if (inta
& ~(priv
->inta_mask
)) {
1105 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1106 inta
& ~priv
->inta_mask
);
1107 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1110 /* Re-enable all interrupts */
1111 /* only Re-enable if diabled by irq */
1112 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1113 iwl_enable_interrupts(priv
);
1115 #ifdef CONFIG_IWLWIFI_DEBUG
1116 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1117 inta
= iwl_read32(priv
, CSR_INT
);
1118 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1119 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1120 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1121 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1124 spin_unlock_irqrestore(&priv
->lock
, flags
);
1127 /* tasklet for iwlagn interrupt */
1128 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1132 unsigned long flags
;
1133 #ifdef CONFIG_IWLWIFI_DEBUG
1137 spin_lock_irqsave(&priv
->lock
, flags
);
1139 /* Ack/clear/reset pending uCode interrupts.
1140 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1142 iwl_write32(priv
, CSR_INT
, priv
->inta
);
1146 #ifdef CONFIG_IWLWIFI_DEBUG
1147 if (priv
->debug_level
& IWL_DL_ISR
) {
1148 /* just for debug */
1149 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1150 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x\n ",
1154 /* saved interrupt in inta variable now we can reset priv->inta */
1157 /* Now service all interrupt bits discovered above. */
1158 if (inta
& CSR_INT_BIT_HW_ERR
) {
1159 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1161 /* Tell the device to stop sending interrupts */
1162 iwl_disable_interrupts(priv
);
1164 priv
->isr_stats
.hw
++;
1165 iwl_irq_handle_error(priv
);
1167 handled
|= CSR_INT_BIT_HW_ERR
;
1169 spin_unlock_irqrestore(&priv
->lock
, flags
);
1174 #ifdef CONFIG_IWLWIFI_DEBUG
1175 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1176 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1177 if (inta
& CSR_INT_BIT_SCD
) {
1178 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1179 "the frame/frames.\n");
1180 priv
->isr_stats
.sch
++;
1183 /* Alive notification via Rx interrupt will do the real work */
1184 if (inta
& CSR_INT_BIT_ALIVE
) {
1185 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1186 priv
->isr_stats
.alive
++;
1190 /* Safely ignore these bits for debug checks below */
1191 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1193 /* HW RF KILL switch toggled */
1194 if (inta
& CSR_INT_BIT_RF_KILL
) {
1196 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1197 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1200 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1201 hw_rf_kill
? "disable radio" : "enable radio");
1203 priv
->isr_stats
.rfkill
++;
1205 /* driver only loads ucode once setting the interface up.
1206 * the driver allows loading the ucode even if the radio
1207 * is killed. Hence update the killswitch state here. The
1208 * rfkill handler will care about restarting if needed.
1210 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1212 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1214 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1215 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1218 handled
|= CSR_INT_BIT_RF_KILL
;
1221 /* Chip got too hot and stopped itself */
1222 if (inta
& CSR_INT_BIT_CT_KILL
) {
1223 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1224 priv
->isr_stats
.ctkill
++;
1225 handled
|= CSR_INT_BIT_CT_KILL
;
1228 /* Error detected by uCode */
1229 if (inta
& CSR_INT_BIT_SW_ERR
) {
1230 IWL_ERR(priv
, "Microcode SW error detected. "
1231 " Restarting 0x%X.\n", inta
);
1232 priv
->isr_stats
.sw
++;
1233 priv
->isr_stats
.sw_err
= inta
;
1234 iwl_irq_handle_error(priv
);
1235 handled
|= CSR_INT_BIT_SW_ERR
;
1238 /* uCode wakes up after power-down sleep */
1239 if (inta
& CSR_INT_BIT_WAKEUP
) {
1240 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1241 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1242 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1243 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1244 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1245 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1246 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1247 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1249 priv
->isr_stats
.wakeup
++;
1251 handled
|= CSR_INT_BIT_WAKEUP
;
1254 /* All uCode command responses, including Tx command responses,
1255 * Rx "responses" (frame-received notification), and other
1256 * notifications from uCode come through here*/
1257 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
|
1258 CSR_INT_BIT_RX_PERIODIC
)) {
1259 IWL_DEBUG_ISR(priv
, "Rx interrupt\n");
1260 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1261 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1262 iwl_write32(priv
, CSR_FH_INT_STATUS
,
1263 CSR49_FH_INT_RX_MASK
);
1265 if (inta
& CSR_INT_BIT_RX_PERIODIC
) {
1266 handled
|= CSR_INT_BIT_RX_PERIODIC
;
1267 iwl_write32(priv
, CSR_INT
, CSR_INT_BIT_RX_PERIODIC
);
1269 /* Sending RX interrupt require many steps to be done in the
1271 * 1- write interrupt to current index in ICT table.
1273 * 3- update RX shared data to indicate last write index.
1274 * 4- send interrupt.
1275 * This could lead to RX race, driver could receive RX interrupt
1276 * but the shared data changes does not reflect this.
1277 * this could lead to RX race, RX periodic will solve this race
1279 iwl_write32(priv
, CSR_INT_PERIODIC_REG
,
1280 CSR_INT_PERIODIC_DIS
);
1281 iwl_rx_handle(priv
);
1282 /* Only set RX periodic if real RX is received. */
1283 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
))
1284 iwl_write32(priv
, CSR_INT_PERIODIC_REG
,
1285 CSR_INT_PERIODIC_ENA
);
1287 priv
->isr_stats
.rx
++;
1290 if (inta
& CSR_INT_BIT_FH_TX
) {
1291 iwl_write32(priv
, CSR_FH_INT_STATUS
, CSR49_FH_INT_TX_MASK
);
1292 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1293 priv
->isr_stats
.tx
++;
1294 handled
|= CSR_INT_BIT_FH_TX
;
1295 /* FH finished to write, send event */
1296 priv
->ucode_write_complete
= 1;
1297 wake_up_interruptible(&priv
->wait_command_queue
);
1300 if (inta
& ~handled
) {
1301 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1302 priv
->isr_stats
.unhandled
++;
1305 if (inta
& ~(priv
->inta_mask
)) {
1306 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1307 inta
& ~priv
->inta_mask
);
1311 /* Re-enable all interrupts */
1312 /* only Re-enable if diabled by irq */
1313 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1314 iwl_enable_interrupts(priv
);
1316 spin_unlock_irqrestore(&priv
->lock
, flags
);
1321 /******************************************************************************
1323 * uCode download functions
1325 ******************************************************************************/
1327 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1329 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1330 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1331 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1332 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1333 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1334 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1337 static void iwl_nic_start(struct iwl_priv
*priv
)
1339 /* Remove all resets to allow NIC to operate */
1340 iwl_write32(priv
, CSR_RESET
, 0);
1345 * iwl_read_ucode - Read uCode images from disk file.
1347 * Copy into buffers for card to fetch via bus-mastering
1349 static int iwl_read_ucode(struct iwl_priv
*priv
)
1351 struct iwl_ucode
*ucode
;
1352 int ret
= -EINVAL
, index
;
1353 const struct firmware
*ucode_raw
;
1354 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1355 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1356 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1360 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1362 /* Ask kernel firmware_class module to get the boot firmware off disk.
1363 * request_firmware() is synchronous, file is in memory on return. */
1364 for (index
= api_max
; index
>= api_min
; index
--) {
1365 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1366 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1368 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
1375 if (index
< api_max
)
1376 IWL_ERR(priv
, "Loaded firmware %s, "
1377 "which is deprecated. "
1378 "Please use API v%u instead.\n",
1381 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file (%zd bytes) from disk\n",
1382 buf
, ucode_raw
->size
);
1390 /* Make sure that we got at least our header! */
1391 if (ucode_raw
->size
< sizeof(*ucode
)) {
1392 IWL_ERR(priv
, "File size way too small!\n");
1397 /* Data from ucode file: header followed by uCode images */
1398 ucode
= (void *)ucode_raw
->data
;
1400 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1401 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1402 inst_size
= le32_to_cpu(ucode
->inst_size
);
1403 data_size
= le32_to_cpu(ucode
->data_size
);
1404 init_size
= le32_to_cpu(ucode
->init_size
);
1405 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1406 boot_size
= le32_to_cpu(ucode
->boot_size
);
1408 /* api_ver should match the api version forming part of the
1409 * firmware filename ... but we don't check for that and only rely
1410 * on the API version read from firmware header from here on forward */
1412 if (api_ver
< api_min
|| api_ver
> api_max
) {
1413 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1414 "Driver supports v%u, firmware is v%u.\n",
1416 priv
->ucode_ver
= 0;
1420 if (api_ver
!= api_max
)
1421 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1422 "got v%u. New firmware can be obtained "
1423 "from http://www.intellinuxwireless.org.\n",
1426 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
1427 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1428 IWL_UCODE_MINOR(priv
->ucode_ver
),
1429 IWL_UCODE_API(priv
->ucode_ver
),
1430 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1432 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1434 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
1436 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
1438 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
1440 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
1442 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
1445 /* Verify size of file vs. image size info in file's header */
1446 if (ucode_raw
->size
< sizeof(*ucode
) +
1447 inst_size
+ data_size
+ init_size
+
1448 init_data_size
+ boot_size
) {
1450 IWL_DEBUG_INFO(priv
, "uCode file size %d too small\n",
1451 (int)ucode_raw
->size
);
1456 /* Verify that uCode images will fit in card's SRAM */
1457 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1458 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
1464 if (data_size
> priv
->hw_params
.max_data_size
) {
1465 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
1470 if (init_size
> priv
->hw_params
.max_inst_size
) {
1471 IWL_INFO(priv
, "uCode init instr len %d too large to fit in\n",
1476 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1477 IWL_INFO(priv
, "uCode init data len %d too large to fit in\n",
1482 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1483 IWL_INFO(priv
, "uCode boot instr len %d too large to fit in\n",
1489 /* Allocate ucode buffers for card's bus-master loading ... */
1491 /* Runtime instructions and 2 copies of data:
1492 * 1) unmodified from disk
1493 * 2) backup cache for save/restore during power-downs */
1494 priv
->ucode_code
.len
= inst_size
;
1495 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1497 priv
->ucode_data
.len
= data_size
;
1498 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1500 priv
->ucode_data_backup
.len
= data_size
;
1501 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1503 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1504 !priv
->ucode_data_backup
.v_addr
)
1507 /* Initialization instructions and data */
1508 if (init_size
&& init_data_size
) {
1509 priv
->ucode_init
.len
= init_size
;
1510 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1512 priv
->ucode_init_data
.len
= init_data_size
;
1513 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1515 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1519 /* Bootstrap (instructions only, no data) */
1521 priv
->ucode_boot
.len
= boot_size
;
1522 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1524 if (!priv
->ucode_boot
.v_addr
)
1528 /* Copy images into buffers for card's bus-master reads ... */
1530 /* Runtime instructions (first block of data in file) */
1531 src
= &ucode
->data
[0];
1532 len
= priv
->ucode_code
.len
;
1533 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n", len
);
1534 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1535 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1536 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1538 /* Runtime data (2nd block)
1539 * NOTE: Copy into backup buffer will be done in iwl_up() */
1540 src
= &ucode
->data
[inst_size
];
1541 len
= priv
->ucode_data
.len
;
1542 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n", len
);
1543 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1544 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1546 /* Initialization instructions (3rd block) */
1548 src
= &ucode
->data
[inst_size
+ data_size
];
1549 len
= priv
->ucode_init
.len
;
1550 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1552 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1555 /* Initialization data (4th block) */
1556 if (init_data_size
) {
1557 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1558 len
= priv
->ucode_init_data
.len
;
1559 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1561 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1564 /* Bootstrap instructions (5th block) */
1565 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1566 len
= priv
->ucode_boot
.len
;
1567 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n", len
);
1568 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1570 /* We have our copies now, allow OS release its copies */
1571 release_firmware(ucode_raw
);
1575 IWL_ERR(priv
, "failed to allocate pci memory\n");
1577 iwl_dealloc_ucode_pci(priv
);
1580 release_firmware(ucode_raw
);
1587 * iwl_alive_start - called after REPLY_ALIVE notification received
1588 * from protocol/runtime uCode (initialization uCode's
1589 * Alive gets handled by iwl_init_alive_start()).
1591 static void iwl_alive_start(struct iwl_priv
*priv
)
1595 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1597 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1598 /* We had an error bringing up the hardware, so take it
1599 * all the way back down so we can try again */
1600 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
1604 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1605 * This is a paranoid check, because we would not have gotten the
1606 * "runtime" alive if code weren't properly loaded. */
1607 if (iwl_verify_ucode(priv
)) {
1608 /* Runtime instruction load was bad;
1609 * take it all the way back down so we can try again */
1610 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
1614 iwl_clear_stations_table(priv
);
1615 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1618 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
1622 /* After the ALIVE response, we can send host commands to the uCode */
1623 set_bit(STATUS_ALIVE
, &priv
->status
);
1625 if (iwl_is_rfkill(priv
))
1628 ieee80211_wake_queues(priv
->hw
);
1630 priv
->active_rate
= priv
->rates_mask
;
1631 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1633 if (iwl_is_associated(priv
)) {
1634 struct iwl_rxon_cmd
*active_rxon
=
1635 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1636 /* apply any changes in staging */
1637 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1638 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1640 /* Initialize our rx_config data */
1641 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1643 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1644 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
1646 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1649 /* Configure Bluetooth device coexistence support */
1650 iwl_send_bt_config(priv
);
1652 iwl_reset_run_time_calib(priv
);
1654 /* Configure the adapter for unassociated operation */
1655 iwlcore_commit_rxon(priv
);
1657 /* At this point, the NIC is initialized and operational */
1658 iwl_rf_kill_ct_config(priv
);
1660 iwl_leds_register(priv
);
1662 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
1663 set_bit(STATUS_READY
, &priv
->status
);
1664 wake_up_interruptible(&priv
->wait_command_queue
);
1666 iwl_power_update_mode(priv
, 1);
1668 /* reassociate for ADHOC mode */
1669 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1670 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1673 iwl_mac_beacon_update(priv
->hw
, beacon
);
1677 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1678 iwl_set_mode(priv
, priv
->iw_mode
);
1683 queue_work(priv
->workqueue
, &priv
->restart
);
1686 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1688 static void __iwl_down(struct iwl_priv
*priv
)
1690 unsigned long flags
;
1691 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1693 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
1696 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1698 iwl_leds_unregister(priv
);
1700 iwl_clear_stations_table(priv
);
1702 /* Unblock any waiting calls */
1703 wake_up_interruptible_all(&priv
->wait_command_queue
);
1705 /* Wipe out the EXIT_PENDING status bit if we are not actually
1706 * exiting the module */
1708 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1710 /* stop and reset the on-board processor */
1711 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1713 /* tell the device to stop sending interrupts */
1714 spin_lock_irqsave(&priv
->lock
, flags
);
1715 iwl_disable_interrupts(priv
);
1716 spin_unlock_irqrestore(&priv
->lock
, flags
);
1717 iwl_synchronize_irq(priv
);
1719 if (priv
->mac80211_registered
)
1720 ieee80211_stop_queues(priv
->hw
);
1722 /* If we have not previously called iwl_init() then
1723 * clear all bits but the RF Kill bit and return */
1724 if (!iwl_is_init(priv
)) {
1725 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1727 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1728 STATUS_GEO_CONFIGURED
|
1729 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1730 STATUS_EXIT_PENDING
;
1734 /* ...otherwise clear out all the status bits but the RF Kill
1735 * bit and continue taking the NIC down. */
1736 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1738 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1739 STATUS_GEO_CONFIGURED
|
1740 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1742 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1743 STATUS_EXIT_PENDING
;
1745 /* device going down, Stop using ICT table */
1746 iwl_disable_ict(priv
);
1747 spin_lock_irqsave(&priv
->lock
, flags
);
1748 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1749 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1750 spin_unlock_irqrestore(&priv
->lock
, flags
);
1752 iwl_txq_ctx_stop(priv
);
1755 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1756 APMG_CLK_VAL_DMA_CLK_RQT
);
1760 /* FIXME: apm_ops.suspend(priv) */
1762 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1764 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
1766 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
1768 if (priv
->ibss_beacon
)
1769 dev_kfree_skb(priv
->ibss_beacon
);
1770 priv
->ibss_beacon
= NULL
;
1772 /* clear out any free frames */
1773 iwl_clear_free_frames(priv
);
1776 static void iwl_down(struct iwl_priv
*priv
)
1778 mutex_lock(&priv
->mutex
);
1780 mutex_unlock(&priv
->mutex
);
1782 iwl_cancel_deferred_work(priv
);
1785 #define HW_READY_TIMEOUT (50)
1787 static int iwl_set_hw_ready(struct iwl_priv
*priv
)
1791 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1792 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
);
1794 /* See if we got it */
1795 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1796 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
1797 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
1799 if (ret
!= -ETIMEDOUT
)
1800 priv
->hw_ready
= true;
1802 priv
->hw_ready
= false;
1804 IWL_DEBUG_INFO(priv
, "hardware %s\n",
1805 (priv
->hw_ready
== 1) ? "ready" : "not ready");
1809 static int iwl_prepare_card_hw(struct iwl_priv
*priv
)
1813 IWL_DEBUG_INFO(priv
, "iwl_prepare_card_hw enter \n");
1815 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1816 CSR_HW_IF_CONFIG_REG_PREPARE
);
1818 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1819 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
,
1820 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
, 150000);
1822 if (ret
!= -ETIMEDOUT
)
1823 iwl_set_hw_ready(priv
);
1828 #define MAX_HW_RESTARTS 5
1830 static int __iwl_up(struct iwl_priv
*priv
)
1835 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1836 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
1840 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
1841 IWL_ERR(priv
, "ucode not available for device bringup\n");
1845 iwl_prepare_card_hw(priv
);
1847 if (!priv
->hw_ready
) {
1848 IWL_WARN(priv
, "Exit HW not ready\n");
1852 /* If platform's RF_KILL switch is NOT set to KILL */
1853 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
1854 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1856 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1858 if (iwl_is_rfkill(priv
)) {
1859 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, true);
1861 iwl_enable_interrupts(priv
);
1862 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
1866 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1868 ret
= iwl_hw_nic_init(priv
);
1870 IWL_ERR(priv
, "Unable to init nic\n");
1874 /* make sure rfkill handshake bits are cleared */
1875 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1876 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1877 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1879 /* clear (again), then enable host interrupts */
1880 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1881 iwl_enable_interrupts(priv
);
1883 /* really make sure rfkill handshake bits are cleared */
1884 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1885 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1887 /* Copy original ucode data image from disk into backup cache.
1888 * This will be used to initialize the on-board processor's
1889 * data SRAM for a clean start when the runtime program first loads. */
1890 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
1891 priv
->ucode_data
.len
);
1893 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
1895 iwl_clear_stations_table(priv
);
1897 /* load bootstrap state machine,
1898 * load bootstrap program into processor's memory,
1899 * prepare to load the "initialize" uCode */
1900 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
1903 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
1908 /* start card; "initialize" will load runtime ucode */
1909 iwl_nic_start(priv
);
1911 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
1916 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1918 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1920 /* tried to restart and config the device for as long as our
1921 * patience could withstand */
1922 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
1927 /*****************************************************************************
1929 * Workqueue callbacks
1931 *****************************************************************************/
1933 static void iwl_bg_init_alive_start(struct work_struct
*data
)
1935 struct iwl_priv
*priv
=
1936 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
1938 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1941 mutex_lock(&priv
->mutex
);
1942 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
1943 mutex_unlock(&priv
->mutex
);
1946 static void iwl_bg_alive_start(struct work_struct
*data
)
1948 struct iwl_priv
*priv
=
1949 container_of(data
, struct iwl_priv
, alive_start
.work
);
1951 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1954 /* enable dram interrupt */
1955 iwl_reset_ict(priv
);
1957 mutex_lock(&priv
->mutex
);
1958 iwl_alive_start(priv
);
1959 mutex_unlock(&priv
->mutex
);
1962 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
1964 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1965 run_time_calib_work
);
1967 mutex_lock(&priv
->mutex
);
1969 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1970 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1971 mutex_unlock(&priv
->mutex
);
1975 if (priv
->start_calib
) {
1976 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
1978 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
1981 mutex_unlock(&priv
->mutex
);
1985 static void iwl_bg_up(struct work_struct
*data
)
1987 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
1989 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1992 mutex_lock(&priv
->mutex
);
1994 mutex_unlock(&priv
->mutex
);
1997 static void iwl_bg_restart(struct work_struct
*data
)
1999 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
2001 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2004 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
2005 mutex_lock(&priv
->mutex
);
2008 mutex_unlock(&priv
->mutex
);
2010 ieee80211_restart_hw(priv
->hw
);
2013 queue_work(priv
->workqueue
, &priv
->up
);
2017 static void iwl_bg_rx_replenish(struct work_struct
*data
)
2019 struct iwl_priv
*priv
=
2020 container_of(data
, struct iwl_priv
, rx_replenish
);
2022 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2025 mutex_lock(&priv
->mutex
);
2026 iwl_rx_replenish(priv
);
2027 mutex_unlock(&priv
->mutex
);
2030 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2032 void iwl_post_associate(struct iwl_priv
*priv
)
2034 struct ieee80211_conf
*conf
= NULL
;
2036 unsigned long flags
;
2038 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2039 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
2043 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
2044 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
2047 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2051 if (!priv
->vif
|| !priv
->is_open
)
2054 iwl_scan_cancel_timeout(priv
, 200);
2056 conf
= ieee80211_get_hw_conf(priv
->hw
);
2058 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2059 iwlcore_commit_rxon(priv
);
2061 iwl_setup_rxon_timing(priv
);
2062 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2063 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2065 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2066 "Attempting to continue.\n");
2068 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2070 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
2072 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2073 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2075 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2077 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
2078 priv
->assoc_id
, priv
->beacon_int
);
2080 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2081 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2083 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2085 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2086 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2087 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2089 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2091 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2092 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2096 iwlcore_commit_rxon(priv
);
2098 switch (priv
->iw_mode
) {
2099 case NL80211_IFTYPE_STATION
:
2102 case NL80211_IFTYPE_ADHOC
:
2104 /* assume default assoc id */
2107 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
2108 iwl_send_beacon_cmd(priv
);
2113 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
2114 __func__
, priv
->iw_mode
);
2118 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2119 priv
->assoc_station_added
= 1;
2121 spin_lock_irqsave(&priv
->lock
, flags
);
2122 iwl_activate_qos(priv
, 0);
2123 spin_unlock_irqrestore(&priv
->lock
, flags
);
2125 /* the chain noise calibration will enabled PM upon completion
2126 * If chain noise has already been run, then we need to enable
2127 * power management here */
2128 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2129 iwl_power_update_mode(priv
, 0);
2131 /* Enable Rx differential gain and sensitivity calibrations */
2132 iwl_chain_noise_reset(priv
);
2133 priv
->start_calib
= 1;
2137 /*****************************************************************************
2139 * mac80211 entry point functions
2141 *****************************************************************************/
2143 #define UCODE_READY_TIMEOUT (4 * HZ)
2145 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2147 struct iwl_priv
*priv
= hw
->priv
;
2150 IWL_DEBUG_MAC80211(priv
, "enter\n");
2152 /* we should be verifying the device is ready to be opened */
2153 mutex_lock(&priv
->mutex
);
2155 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
2156 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2157 * ucode filename and max sizes are card-specific. */
2159 if (!priv
->ucode_code
.len
) {
2160 ret
= iwl_read_ucode(priv
);
2162 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
2163 mutex_unlock(&priv
->mutex
);
2168 ret
= __iwl_up(priv
);
2170 mutex_unlock(&priv
->mutex
);
2175 if (iwl_is_rfkill(priv
))
2178 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2180 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2181 * mac80211 will not be run successfully. */
2182 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2183 test_bit(STATUS_READY
, &priv
->status
),
2184 UCODE_READY_TIMEOUT
);
2186 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2187 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
2188 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2195 IWL_DEBUG_MAC80211(priv
, "leave\n");
2199 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2201 struct iwl_priv
*priv
= hw
->priv
;
2203 IWL_DEBUG_MAC80211(priv
, "enter\n");
2210 if (iwl_is_ready_rf(priv
)) {
2211 /* stop mac, cancel any scan request and clear
2212 * RXON_FILTER_ASSOC_MSK BIT
2214 mutex_lock(&priv
->mutex
);
2215 iwl_scan_cancel_timeout(priv
, 100);
2216 mutex_unlock(&priv
->mutex
);
2221 flush_workqueue(priv
->workqueue
);
2223 /* enable interrupts again in order to receive rfkill changes */
2224 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2225 iwl_enable_interrupts(priv
);
2227 IWL_DEBUG_MAC80211(priv
, "leave\n");
2230 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2232 struct iwl_priv
*priv
= hw
->priv
;
2234 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2236 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2237 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2239 if (iwl_tx_skb(priv
, skb
))
2240 dev_kfree_skb_any(skb
);
2242 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2243 return NETDEV_TX_OK
;
2246 void iwl_config_ap(struct iwl_priv
*priv
)
2249 unsigned long flags
;
2251 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2254 /* The following should be done only at AP bring up */
2255 if (!iwl_is_associated(priv
)) {
2257 /* RXON - unassoc (to set timing command) */
2258 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2259 iwlcore_commit_rxon(priv
);
2262 iwl_setup_rxon_timing(priv
);
2263 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2264 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2266 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2267 "Attempting to continue.\n");
2269 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2270 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2272 /* FIXME: what should be the assoc_id for AP? */
2273 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2274 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2275 priv
->staging_rxon
.flags
|=
2276 RXON_FLG_SHORT_PREAMBLE_MSK
;
2278 priv
->staging_rxon
.flags
&=
2279 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2281 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2282 if (priv
->assoc_capability
&
2283 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2284 priv
->staging_rxon
.flags
|=
2285 RXON_FLG_SHORT_SLOT_MSK
;
2287 priv
->staging_rxon
.flags
&=
2288 ~RXON_FLG_SHORT_SLOT_MSK
;
2290 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2291 priv
->staging_rxon
.flags
&=
2292 ~RXON_FLG_SHORT_SLOT_MSK
;
2294 /* restore RXON assoc */
2295 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2296 iwlcore_commit_rxon(priv
);
2297 spin_lock_irqsave(&priv
->lock
, flags
);
2298 iwl_activate_qos(priv
, 1);
2299 spin_unlock_irqrestore(&priv
->lock
, flags
);
2300 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2302 iwl_send_beacon_cmd(priv
);
2304 /* FIXME - we need to add code here to detect a totally new
2305 * configuration, reset the AP, unassoc, rxon timing, assoc,
2306 * clear sta table, add BCAST sta... */
2309 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
2310 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
2311 u32 iv32
, u16
*phase1key
)
2314 struct iwl_priv
*priv
= hw
->priv
;
2315 IWL_DEBUG_MAC80211(priv
, "enter\n");
2317 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
2319 IWL_DEBUG_MAC80211(priv
, "leave\n");
2322 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2323 struct ieee80211_vif
*vif
,
2324 struct ieee80211_sta
*sta
,
2325 struct ieee80211_key_conf
*key
)
2327 struct iwl_priv
*priv
= hw
->priv
;
2331 bool is_default_wep_key
= false;
2333 IWL_DEBUG_MAC80211(priv
, "enter\n");
2335 if (priv
->hw_params
.sw_crypto
) {
2336 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
2339 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
2340 sta_id
= iwl_find_station(priv
, addr
);
2341 if (sta_id
== IWL_INVALID_STATION
) {
2342 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
2348 mutex_lock(&priv
->mutex
);
2349 iwl_scan_cancel_timeout(priv
, 100);
2350 mutex_unlock(&priv
->mutex
);
2352 /* If we are getting WEP group key and we didn't receive any key mapping
2353 * so far, we are in legacy wep mode (group key only), otherwise we are
2355 * In legacy wep mode, we use another host command to the uCode */
2356 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
2357 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2359 is_default_wep_key
= !priv
->key_mapping_key
;
2361 is_default_wep_key
=
2362 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
2367 if (is_default_wep_key
)
2368 ret
= iwl_set_default_wep_key(priv
, key
);
2370 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
2372 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
2375 if (is_default_wep_key
)
2376 ret
= iwl_remove_default_wep_key(priv
, key
);
2378 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
2380 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
2386 IWL_DEBUG_MAC80211(priv
, "leave\n");
2391 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
2392 enum ieee80211_ampdu_mlme_action action
,
2393 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
2395 struct iwl_priv
*priv
= hw
->priv
;
2398 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
2401 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
2405 case IEEE80211_AMPDU_RX_START
:
2406 IWL_DEBUG_HT(priv
, "start Rx\n");
2407 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
2408 case IEEE80211_AMPDU_RX_STOP
:
2409 IWL_DEBUG_HT(priv
, "stop Rx\n");
2410 ret
= iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
2411 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2415 case IEEE80211_AMPDU_TX_START
:
2416 IWL_DEBUG_HT(priv
, "start Tx\n");
2417 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
2418 case IEEE80211_AMPDU_TX_STOP
:
2419 IWL_DEBUG_HT(priv
, "stop Tx\n");
2420 ret
= iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
2421 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2426 IWL_DEBUG_HT(priv
, "unknown\n");
2433 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
2434 struct ieee80211_low_level_stats
*stats
)
2436 struct iwl_priv
*priv
= hw
->priv
;
2439 IWL_DEBUG_MAC80211(priv
, "enter\n");
2440 IWL_DEBUG_MAC80211(priv
, "leave\n");
2445 /*****************************************************************************
2449 *****************************************************************************/
2451 #ifdef CONFIG_IWLWIFI_DEBUG
2454 * The following adds a new attribute to the sysfs representation
2455 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2456 * used for controlling the debug level.
2458 * See the level definitions in iwl for details.
2461 static ssize_t
show_debug_level(struct device
*d
,
2462 struct device_attribute
*attr
, char *buf
)
2464 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2466 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
2468 static ssize_t
store_debug_level(struct device
*d
,
2469 struct device_attribute
*attr
,
2470 const char *buf
, size_t count
)
2472 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2476 ret
= strict_strtoul(buf
, 0, &val
);
2478 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
2480 priv
->debug_level
= val
;
2482 return strnlen(buf
, count
);
2485 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
2486 show_debug_level
, store_debug_level
);
2489 #endif /* CONFIG_IWLWIFI_DEBUG */
2492 static ssize_t
show_version(struct device
*d
,
2493 struct device_attribute
*attr
, char *buf
)
2495 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2496 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
2500 if (palive
->is_valid
)
2501 pos
+= sprintf(buf
+ pos
,
2502 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2503 "fw type: 0x%01X 0x%01X\n",
2504 palive
->ucode_major
, palive
->ucode_minor
,
2505 palive
->sw_rev
[0], palive
->sw_rev
[1],
2506 palive
->ver_type
, palive
->ver_subtype
);
2508 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
2511 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
2512 pos
+= sprintf(buf
+ pos
, "NVM Type: %s, version: 0x%x\n",
2513 (priv
->nvm_device_type
== NVM_DEVICE_TYPE_OTP
)
2514 ? "OTP" : "EEPROM", eeprom_ver
);
2517 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
2523 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
2525 static ssize_t
show_temperature(struct device
*d
,
2526 struct device_attribute
*attr
, char *buf
)
2528 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2530 if (!iwl_is_alive(priv
))
2533 return sprintf(buf
, "%d\n", priv
->temperature
);
2536 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
2538 static ssize_t
show_tx_power(struct device
*d
,
2539 struct device_attribute
*attr
, char *buf
)
2541 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2543 if (!iwl_is_ready_rf(priv
))
2544 return sprintf(buf
, "off\n");
2546 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
2549 static ssize_t
store_tx_power(struct device
*d
,
2550 struct device_attribute
*attr
,
2551 const char *buf
, size_t count
)
2553 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2557 ret
= strict_strtoul(buf
, 10, &val
);
2559 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
2561 iwl_set_tx_power(priv
, val
, false);
2566 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
2568 static ssize_t
show_flags(struct device
*d
,
2569 struct device_attribute
*attr
, char *buf
)
2571 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2573 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
2576 static ssize_t
store_flags(struct device
*d
,
2577 struct device_attribute
*attr
,
2578 const char *buf
, size_t count
)
2580 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2583 int ret
= strict_strtoul(buf
, 0, &val
);
2588 mutex_lock(&priv
->mutex
);
2589 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
2590 /* Cancel any currently running scans... */
2591 if (iwl_scan_cancel_timeout(priv
, 100))
2592 IWL_WARN(priv
, "Could not cancel scan.\n");
2594 IWL_DEBUG_INFO(priv
, "Commit rxon.flags = 0x%04X\n", flags
);
2595 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
2596 iwlcore_commit_rxon(priv
);
2599 mutex_unlock(&priv
->mutex
);
2604 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
2606 static ssize_t
show_filter_flags(struct device
*d
,
2607 struct device_attribute
*attr
, char *buf
)
2609 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2611 return sprintf(buf
, "0x%04X\n",
2612 le32_to_cpu(priv
->active_rxon
.filter_flags
));
2615 static ssize_t
store_filter_flags(struct device
*d
,
2616 struct device_attribute
*attr
,
2617 const char *buf
, size_t count
)
2619 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2622 int ret
= strict_strtoul(buf
, 0, &val
);
2625 filter_flags
= (u32
)val
;
2627 mutex_lock(&priv
->mutex
);
2628 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
2629 /* Cancel any currently running scans... */
2630 if (iwl_scan_cancel_timeout(priv
, 100))
2631 IWL_WARN(priv
, "Could not cancel scan.\n");
2633 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
2634 "0x%04X\n", filter_flags
);
2635 priv
->staging_rxon
.filter_flags
=
2636 cpu_to_le32(filter_flags
);
2637 iwlcore_commit_rxon(priv
);
2640 mutex_unlock(&priv
->mutex
);
2645 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
2646 store_filter_flags
);
2648 static ssize_t
store_power_level(struct device
*d
,
2649 struct device_attribute
*attr
,
2650 const char *buf
, size_t count
)
2652 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2657 mutex_lock(&priv
->mutex
);
2659 ret
= strict_strtoul(buf
, 10, &mode
);
2663 ret
= iwl_power_set_user_mode(priv
, mode
);
2665 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
2671 mutex_unlock(&priv
->mutex
);
2675 static ssize_t
show_power_level(struct device
*d
,
2676 struct device_attribute
*attr
, char *buf
)
2678 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2679 int mode
= priv
->power_data
.user_power_setting
;
2680 int level
= priv
->power_data
.power_mode
;
2683 p
+= sprintf(p
, "INDEX:%d\t", level
);
2684 p
+= sprintf(p
, "USER:%d\n", mode
);
2688 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
2691 static ssize_t
show_qos(struct device
*d
,
2692 struct device_attribute
*attr
, char *buf
)
2694 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2698 for (q
= 0; q
< AC_NUM
; q
++) {
2699 p
+= sprintf(p
, "\tcw_min\tcw_max\taifsn\ttxop\n");
2700 p
+= sprintf(p
, "AC[%d]\t%u\t%u\t%u\t%u\n", q
,
2701 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
,
2702 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
,
2703 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
,
2704 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
);
2710 static DEVICE_ATTR(qos
, S_IRUGO
, show_qos
, NULL
);
2712 static ssize_t
show_statistics(struct device
*d
,
2713 struct device_attribute
*attr
, char *buf
)
2715 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2716 u32 size
= sizeof(struct iwl_notif_statistics
);
2717 u32 len
= 0, ofs
= 0;
2718 u8
*data
= (u8
*)&priv
->statistics
;
2721 if (!iwl_is_alive(priv
))
2724 mutex_lock(&priv
->mutex
);
2725 rc
= iwl_send_statistics_request(priv
, 0);
2726 mutex_unlock(&priv
->mutex
);
2730 "Error sending statistics request: 0x%08X\n", rc
);
2734 while (size
&& (PAGE_SIZE
- len
)) {
2735 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
2736 PAGE_SIZE
- len
, 1);
2738 if (PAGE_SIZE
- len
)
2742 size
-= min(size
, 16U);
2748 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
2751 /*****************************************************************************
2753 * driver setup and teardown
2755 *****************************************************************************/
2757 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
2759 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
2761 init_waitqueue_head(&priv
->wait_command_queue
);
2763 INIT_WORK(&priv
->up
, iwl_bg_up
);
2764 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
2765 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
2766 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
2767 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
2768 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
2769 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
2771 iwl_setup_scan_deferred_work(priv
);
2773 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
2774 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
2776 init_timer(&priv
->statistics_periodic
);
2777 priv
->statistics_periodic
.data
= (unsigned long)priv
;
2778 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
2780 if (!priv
->cfg
->use_isr_legacy
)
2781 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
2782 iwl_irq_tasklet
, (unsigned long)priv
);
2784 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
2785 iwl_irq_tasklet_legacy
, (unsigned long)priv
);
2788 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
2790 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
2791 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
2793 cancel_delayed_work_sync(&priv
->init_alive_start
);
2794 cancel_delayed_work(&priv
->scan_check
);
2795 cancel_delayed_work(&priv
->alive_start
);
2796 cancel_work_sync(&priv
->beacon_update
);
2797 del_timer_sync(&priv
->statistics_periodic
);
2800 static struct attribute
*iwl_sysfs_entries
[] = {
2801 &dev_attr_flags
.attr
,
2802 &dev_attr_filter_flags
.attr
,
2803 &dev_attr_power_level
.attr
,
2804 &dev_attr_statistics
.attr
,
2805 &dev_attr_temperature
.attr
,
2806 &dev_attr_tx_power
.attr
,
2807 #ifdef CONFIG_IWLWIFI_DEBUG
2808 &dev_attr_debug_level
.attr
,
2810 &dev_attr_version
.attr
,
2815 static struct attribute_group iwl_attribute_group
= {
2816 .name
= NULL
, /* put in device directory */
2817 .attrs
= iwl_sysfs_entries
,
2820 static struct ieee80211_ops iwl_hw_ops
= {
2822 .start
= iwl_mac_start
,
2823 .stop
= iwl_mac_stop
,
2824 .add_interface
= iwl_mac_add_interface
,
2825 .remove_interface
= iwl_mac_remove_interface
,
2826 .config
= iwl_mac_config
,
2827 .configure_filter
= iwl_configure_filter
,
2828 .set_key
= iwl_mac_set_key
,
2829 .update_tkip_key
= iwl_mac_update_tkip_key
,
2830 .get_stats
= iwl_mac_get_stats
,
2831 .get_tx_stats
= iwl_mac_get_tx_stats
,
2832 .conf_tx
= iwl_mac_conf_tx
,
2833 .reset_tsf
= iwl_mac_reset_tsf
,
2834 .bss_info_changed
= iwl_bss_info_changed
,
2835 .ampdu_action
= iwl_mac_ampdu_action
,
2836 .hw_scan
= iwl_mac_hw_scan
2839 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2842 struct iwl_priv
*priv
;
2843 struct ieee80211_hw
*hw
;
2844 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
2845 unsigned long flags
;
2848 /************************
2849 * 1. Allocating HW data
2850 ************************/
2852 /* Disabling hardware scan means that mac80211 will perform scans
2853 * "the hard way", rather than using device's scan. */
2854 if (cfg
->mod_params
->disable_hw_scan
) {
2855 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
2856 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
2857 "Disabling hw_scan\n");
2858 iwl_hw_ops
.hw_scan
= NULL
;
2861 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
2867 /* At this point both hw and priv are allocated. */
2869 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
2871 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
2873 priv
->pci_dev
= pdev
;
2874 priv
->inta_mask
= CSR_INI_SET_MASK
;
2876 #ifdef CONFIG_IWLWIFI_DEBUG
2877 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
2878 atomic_set(&priv
->restrict_refcnt
, 0);
2881 /**************************
2882 * 2. Initializing PCI bus
2883 **************************/
2884 if (pci_enable_device(pdev
)) {
2886 goto out_ieee80211_free_hw
;
2889 pci_set_master(pdev
);
2891 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
2893 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
2895 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
2897 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
2898 /* both attempts failed: */
2900 IWL_WARN(priv
, "No suitable DMA available.\n");
2901 goto out_pci_disable_device
;
2905 err
= pci_request_regions(pdev
, DRV_NAME
);
2907 goto out_pci_disable_device
;
2909 pci_set_drvdata(pdev
, priv
);
2912 /***********************
2913 * 3. Read REV register
2914 ***********************/
2915 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
2916 if (!priv
->hw_base
) {
2918 goto out_pci_release_regions
;
2921 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
2922 (unsigned long long) pci_resource_len(pdev
, 0));
2923 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
2925 /* this spin lock will be used in apm_ops.init and EEPROM access
2926 * we should init now
2928 spin_lock_init(&priv
->reg_lock
);
2929 iwl_hw_detect(priv
);
2930 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2931 priv
->cfg
->name
, priv
->hw_rev
);
2933 /* We disable the RETRY_TIMEOUT register (0x41) to keep
2934 * PCI Tx retries from interfering with C3 CPU state */
2935 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
2937 iwl_prepare_card_hw(priv
);
2938 if (!priv
->hw_ready
) {
2939 IWL_WARN(priv
, "Failed, HW not ready\n");
2944 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
2946 IWL_ERR(priv
, "Failed to init APMG\n");
2952 /* Read the EEPROM */
2953 err
= iwl_eeprom_init(priv
);
2955 IWL_ERR(priv
, "Unable to init EEPROM\n");
2958 err
= iwl_eeprom_check_version(priv
);
2960 goto out_free_eeprom
;
2962 /* extract MAC Address */
2963 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
2964 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
2965 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
2967 /************************
2968 * 5. Setup HW constants
2969 ************************/
2970 if (iwl_set_hw_params(priv
)) {
2971 IWL_ERR(priv
, "failed to set hw parameters\n");
2972 goto out_free_eeprom
;
2975 /*******************
2977 *******************/
2979 err
= iwl_init_drv(priv
);
2981 goto out_free_eeprom
;
2982 /* At this point both hw and priv are initialized. */
2984 /********************
2986 ********************/
2987 spin_lock_irqsave(&priv
->lock
, flags
);
2988 iwl_disable_interrupts(priv
);
2989 spin_unlock_irqrestore(&priv
->lock
, flags
);
2991 pci_enable_msi(priv
->pci_dev
);
2993 iwl_alloc_isr_ict(priv
);
2994 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
2995 IRQF_SHARED
, DRV_NAME
, priv
);
2997 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
2998 goto out_disable_msi
;
3000 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3002 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3006 iwl_setup_deferred_work(priv
);
3007 iwl_setup_rx_handlers(priv
);
3009 /**********************************
3010 * 8. Setup and register mac80211
3011 **********************************/
3013 /* enable interrupts if needed: hw bug w/a */
3014 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3015 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3016 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3017 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3020 iwl_enable_interrupts(priv
);
3022 err
= iwl_setup_mac(priv
);
3024 goto out_remove_sysfs
;
3026 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
3028 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
3030 /* If platform's RF_KILL switch is NOT set to KILL */
3031 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3032 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3034 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3036 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
3037 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
3039 iwl_power_initialize(priv
);
3043 destroy_workqueue(priv
->workqueue
);
3044 priv
->workqueue
= NULL
;
3045 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3047 free_irq(priv
->pci_dev
->irq
, priv
);
3048 iwl_free_isr_ict(priv
);
3050 pci_disable_msi(priv
->pci_dev
);
3051 iwl_uninit_drv(priv
);
3053 iwl_eeprom_free(priv
);
3055 pci_iounmap(pdev
, priv
->hw_base
);
3056 out_pci_release_regions
:
3057 pci_set_drvdata(pdev
, NULL
);
3058 pci_release_regions(pdev
);
3059 out_pci_disable_device
:
3060 pci_disable_device(pdev
);
3061 out_ieee80211_free_hw
:
3062 ieee80211_free_hw(priv
->hw
);
3067 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3069 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3070 unsigned long flags
;
3075 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3077 iwl_dbgfs_unregister(priv
);
3078 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3080 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3081 * to be called and iwl_down since we are removing the device
3082 * we need to set STATUS_EXIT_PENDING bit.
3084 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3085 if (priv
->mac80211_registered
) {
3086 ieee80211_unregister_hw(priv
->hw
);
3087 priv
->mac80211_registered
= 0;
3092 /* make sure we flush any pending irq or
3093 * tasklet for the driver
3095 spin_lock_irqsave(&priv
->lock
, flags
);
3096 iwl_disable_interrupts(priv
);
3097 spin_unlock_irqrestore(&priv
->lock
, flags
);
3099 iwl_synchronize_irq(priv
);
3101 iwl_dealloc_ucode_pci(priv
);
3104 iwl_rx_queue_free(priv
, &priv
->rxq
);
3105 iwl_hw_txq_ctx_free(priv
);
3107 iwl_clear_stations_table(priv
);
3108 iwl_eeprom_free(priv
);
3111 /*netif_stop_queue(dev); */
3112 flush_workqueue(priv
->workqueue
);
3114 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3115 * priv->workqueue... so we can't take down the workqueue
3117 destroy_workqueue(priv
->workqueue
);
3118 priv
->workqueue
= NULL
;
3120 free_irq(priv
->pci_dev
->irq
, priv
);
3121 pci_disable_msi(priv
->pci_dev
);
3122 pci_iounmap(pdev
, priv
->hw_base
);
3123 pci_release_regions(pdev
);
3124 pci_disable_device(pdev
);
3125 pci_set_drvdata(pdev
, NULL
);
3127 iwl_uninit_drv(priv
);
3129 iwl_free_isr_ict(priv
);
3131 if (priv
->ibss_beacon
)
3132 dev_kfree_skb(priv
->ibss_beacon
);
3134 ieee80211_free_hw(priv
->hw
);
3138 /*****************************************************************************
3140 * driver and module entry point
3142 *****************************************************************************/
3144 /* Hardware specific file defines the PCI IDs table for that hardware module */
3145 static struct pci_device_id iwl_hw_card_ids
[] = {
3146 #ifdef CONFIG_IWL4965
3147 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3148 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3149 #endif /* CONFIG_IWL4965 */
3150 #ifdef CONFIG_IWL5000
3151 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
3152 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
3153 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
3154 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
3155 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
3156 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
3157 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3158 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3159 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3160 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3161 /* 5350 WiFi/WiMax */
3162 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
3163 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
3164 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
3165 /* 5150 Wifi/WiMax */
3166 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3167 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3168 /* 6000/6050 Series */
3169 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg
)},
3170 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg
)},
3171 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg
)},
3172 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3173 {IWL_PCI_DEVICE(0x422C, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3174 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3175 {IWL_PCI_DEVICE(0x4239, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3176 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3177 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3178 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3179 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3180 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3181 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3182 /* 1000 Series WiFi */
3183 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
3184 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
3185 #endif /* CONFIG_IWL5000 */
3189 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
3191 static struct pci_driver iwl_driver
= {
3193 .id_table
= iwl_hw_card_ids
,
3194 .probe
= iwl_pci_probe
,
3195 .remove
= __devexit_p(iwl_pci_remove
),
3197 .suspend
= iwl_pci_suspend
,
3198 .resume
= iwl_pci_resume
,
3202 static int __init
iwl_init(void)
3206 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3207 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
3209 ret
= iwlagn_rate_control_register();
3211 printk(KERN_ERR DRV_NAME
3212 "Unable to register rate control algorithm: %d\n", ret
);
3216 ret
= pci_register_driver(&iwl_driver
);
3218 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
3219 goto error_register
;
3225 iwlagn_rate_control_unregister();
3229 static void __exit
iwl_exit(void)
3231 pci_unregister_driver(&iwl_driver
);
3232 iwlagn_rate_control_unregister();
3235 module_exit(iwl_exit
);
3236 module_init(iwl_init
);