1 /******************************************************************************
3 * Copyright(c) 2003 - 2007 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 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/etherdevice.h>
52 #include <linux/if_arp.h>
54 #include <net/ieee80211_radiotap.h>
55 #include <net/mac80211.h>
57 #include <asm/div64.h>
63 #include "iwl-helpers.h"
65 #ifdef CONFIG_IWLWIFI_DEBUG
69 /******************************************************************************
73 ******************************************************************************/
75 /* module parameters */
76 int iwl_param_disable_hw_scan
;
78 int iwl_param_disable
; /* def: enable radio */
79 int iwl_param_antenna
; /* def: 0 = both antennas (use diversity) */
80 int iwl_param_hwcrypto
; /* def: using software encryption */
81 int iwl_param_qos_enable
= 1;
82 int iwl_param_queues_num
= IWL_MAX_NUM_QUEUES
;
85 * module name, copyright, version, etc.
86 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
89 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
91 #ifdef CONFIG_IWLWIFI_DEBUG
97 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
103 #define IWLWIFI_VERSION "1.1.17k" VD VS
104 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
105 #define DRV_VERSION IWLWIFI_VERSION
107 /* Change firmware file name, using "-" and incrementing number,
108 * *only* when uCode interface or architecture changes so that it
109 * is not compatible with earlier drivers.
110 * This number will also appear in << 8 position of 1st dword of uCode file */
111 #define IWL4965_UCODE_API "-1"
113 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
114 MODULE_VERSION(DRV_VERSION
);
115 MODULE_AUTHOR(DRV_COPYRIGHT
);
116 MODULE_LICENSE("GPL");
118 __le16
*ieee80211_get_qos_ctrl(struct ieee80211_hdr
*hdr
)
120 u16 fc
= le16_to_cpu(hdr
->frame_control
);
121 int hdr_len
= ieee80211_get_hdrlen(fc
);
123 if ((fc
& 0x00cc) == (IEEE80211_STYPE_QOS_DATA
| IEEE80211_FTYPE_DATA
))
124 return (__le16
*) ((u8
*) hdr
+ hdr_len
- QOS_CONTROL_LEN
);
128 static const struct ieee80211_hw_mode
*iwl_get_hw_mode(
129 struct iwl_priv
*priv
, int mode
)
133 for (i
= 0; i
< 3; i
++)
134 if (priv
->modes
[i
].mode
== mode
)
135 return &priv
->modes
[i
];
140 static int iwl_is_empty_essid(const char *essid
, int essid_len
)
142 /* Single white space is for Linksys APs */
143 if (essid_len
== 1 && essid
[0] == ' ')
146 /* Otherwise, if the entire essid is 0, we assume it is hidden */
149 if (essid
[essid_len
] != '\0')
156 static const char *iwl_escape_essid(const char *essid
, u8 essid_len
)
158 static char escaped
[IW_ESSID_MAX_SIZE
* 2 + 1];
159 const char *s
= essid
;
162 if (iwl_is_empty_essid(essid
, essid_len
)) {
163 memcpy(escaped
, "<hidden>", sizeof("<hidden>"));
167 essid_len
= min(essid_len
, (u8
) IW_ESSID_MAX_SIZE
);
168 while (essid_len
--) {
180 static void iwl_print_hex_dump(int level
, void *p
, u32 len
)
182 #ifdef CONFIG_IWLWIFI_DEBUG
183 if (!(iwl_debug_level
& level
))
186 print_hex_dump(KERN_DEBUG
, "iwl data: ", DUMP_PREFIX_OFFSET
, 16, 1,
191 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
194 * Theory of operation
196 * A queue is a circular buffers with 'Read' and 'Write' pointers.
197 * 2 empty entries always kept in the buffer to protect from overflow.
199 * For Tx queue, there are low mark and high mark limits. If, after queuing
200 * the packet for Tx, free space become < low mark, Tx queue stopped. When
201 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
204 * The IWL operates with six queues, one receive queue in the device's
205 * sram, one transmit queue for sending commands to the device firmware,
206 * and four transmit queues for data.
207 ***************************************************/
209 static int iwl_queue_space(const struct iwl_queue
*q
)
211 int s
= q
->read_ptr
- q
->write_ptr
;
213 if (q
->read_ptr
> q
->write_ptr
)
218 /* keep some reserve to not confuse empty and full situations */
225 /* XXX: n_bd must be power-of-two size */
226 static inline int iwl_queue_inc_wrap(int index
, int n_bd
)
228 return ++index
& (n_bd
- 1);
231 /* XXX: n_bd must be power-of-two size */
232 static inline int iwl_queue_dec_wrap(int index
, int n_bd
)
234 return --index
& (n_bd
- 1);
237 static inline int x2_queue_used(const struct iwl_queue
*q
, int i
)
239 return q
->write_ptr
> q
->read_ptr
?
240 (i
>= q
->read_ptr
&& i
< q
->write_ptr
) :
241 !(i
< q
->read_ptr
&& i
>= q
->write_ptr
);
244 static inline u8
get_cmd_index(struct iwl_queue
*q
, u32 index
, int is_huge
)
249 return index
& (q
->n_window
- 1);
252 static int iwl_queue_init(struct iwl_priv
*priv
, struct iwl_queue
*q
,
253 int count
, int slots_num
, u32 id
)
256 q
->n_window
= slots_num
;
259 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
260 * and iwl_queue_dec_wrap are broken. */
261 BUG_ON(!is_power_of_2(count
));
263 /* slots_num must be power-of-two size, otherwise
264 * get_cmd_index is broken. */
265 BUG_ON(!is_power_of_2(slots_num
));
267 q
->low_mark
= q
->n_window
/ 4;
271 q
->high_mark
= q
->n_window
/ 8;
272 if (q
->high_mark
< 2)
275 q
->write_ptr
= q
->read_ptr
= 0;
280 static int iwl_tx_queue_alloc(struct iwl_priv
*priv
,
281 struct iwl_tx_queue
*txq
, u32 id
)
283 struct pci_dev
*dev
= priv
->pci_dev
;
285 if (id
!= IWL_CMD_QUEUE_NUM
) {
286 txq
->txb
= kmalloc(sizeof(txq
->txb
[0]) *
287 TFD_QUEUE_SIZE_MAX
, GFP_KERNEL
);
289 IWL_ERROR("kmalloc for auxiliary BD "
290 "structures failed\n");
296 txq
->bd
= pci_alloc_consistent(dev
,
297 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
,
301 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
302 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
);
318 int iwl_tx_queue_init(struct iwl_priv
*priv
,
319 struct iwl_tx_queue
*txq
, int slots_num
, u32 txq_id
)
321 struct pci_dev
*dev
= priv
->pci_dev
;
325 /* allocate command space + one big command for scan since scan
326 * command is very huge the system will not have two scan at the
328 len
= sizeof(struct iwl_cmd
) * slots_num
;
329 if (txq_id
== IWL_CMD_QUEUE_NUM
)
330 len
+= IWL_MAX_SCAN_SIZE
;
331 txq
->cmd
= pci_alloc_consistent(dev
, len
, &txq
->dma_addr_cmd
);
335 rc
= iwl_tx_queue_alloc(priv
, txq
, txq_id
);
337 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
341 txq
->need_update
= 0;
343 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
344 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
345 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX
& (TFD_QUEUE_SIZE_MAX
- 1));
346 iwl_queue_init(priv
, &txq
->q
, TFD_QUEUE_SIZE_MAX
, slots_num
, txq_id
);
348 iwl_hw_tx_queue_init(priv
, txq
);
354 * iwl_tx_queue_free - Deallocate DMA queue.
355 * @txq: Transmit queue to deallocate.
357 * Empty queue by removing and destroying all BD's.
358 * Free all buffers. txq itself is not freed.
361 void iwl_tx_queue_free(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
363 struct iwl_queue
*q
= &txq
->q
;
364 struct pci_dev
*dev
= priv
->pci_dev
;
370 /* first, empty all BD's */
371 for (; q
->write_ptr
!= q
->read_ptr
;
372 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
))
373 iwl_hw_txq_free_tfd(priv
, txq
);
375 len
= sizeof(struct iwl_cmd
) * q
->n_window
;
376 if (q
->id
== IWL_CMD_QUEUE_NUM
)
377 len
+= IWL_MAX_SCAN_SIZE
;
379 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
381 /* free buffers belonging to queue itself */
383 pci_free_consistent(dev
, sizeof(struct iwl_tfd_frame
) *
384 txq
->q
.n_bd
, txq
->bd
, txq
->q
.dma_addr
);
391 /* 0 fill whole structure */
392 memset(txq
, 0, sizeof(*txq
));
395 const u8 BROADCAST_ADDR
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
397 /*************** STATION TABLE MANAGEMENT ****
399 * NOTE: This needs to be overhauled to better synchronize between
400 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
402 * mac80211 should also be examined to determine if sta_info is duplicating
403 * the functionality provided here
406 /**************************************************************/
408 #if 0 /* temporary disable till we add real remove station */
409 static u8
iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
411 int index
= IWL_INVALID_STATION
;
415 spin_lock_irqsave(&priv
->sta_lock
, flags
);
419 else if (is_broadcast_ether_addr(addr
))
420 index
= priv
->hw_setting
.bcast_sta_id
;
422 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++)
423 if (priv
->stations
[i
].used
&&
424 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
430 if (unlikely(index
== IWL_INVALID_STATION
))
433 if (priv
->stations
[index
].used
) {
434 priv
->stations
[index
].used
= 0;
435 priv
->num_stations
--;
438 BUG_ON(priv
->num_stations
< 0);
441 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
446 static void iwl_clear_stations_table(struct iwl_priv
*priv
)
450 spin_lock_irqsave(&priv
->sta_lock
, flags
);
452 priv
->num_stations
= 0;
453 memset(priv
->stations
, 0, sizeof(priv
->stations
));
455 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
458 u8
iwl_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
, u8 flags
)
461 int index
= IWL_INVALID_STATION
;
462 struct iwl_station_entry
*station
;
463 unsigned long flags_spin
;
464 DECLARE_MAC_BUF(mac
);
466 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
469 else if (is_broadcast_ether_addr(addr
))
470 index
= priv
->hw_setting
.bcast_sta_id
;
472 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++) {
473 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
479 if (!priv
->stations
[i
].used
&&
480 index
== IWL_INVALID_STATION
)
485 /* These two conditions has the same outcome but keep them separate
486 since they have different meaning */
487 if (unlikely(index
== IWL_INVALID_STATION
)) {
488 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
492 if (priv
->stations
[index
].used
&&
493 !compare_ether_addr(priv
->stations
[index
].sta
.sta
.addr
, addr
)) {
494 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
499 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index
, print_mac(mac
, addr
));
500 station
= &priv
->stations
[index
];
502 priv
->num_stations
++;
504 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
505 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
506 station
->sta
.mode
= 0;
507 station
->sta
.sta
.sta_id
= index
;
508 station
->sta
.station_flags
= 0;
510 #ifdef CONFIG_IWLWIFI_HT
511 /* BCAST station and IBSS stations do not work in HT mode */
512 if (index
!= priv
->hw_setting
.bcast_sta_id
&&
513 priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
)
514 iwl4965_set_ht_add_station(priv
, index
);
515 #endif /*CONFIG_IWLWIFI_HT*/
517 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
518 iwl_send_add_station(priv
, &station
->sta
, flags
);
523 /*************** DRIVER STATUS FUNCTIONS *****/
525 static inline int iwl_is_ready(struct iwl_priv
*priv
)
527 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
528 * set but EXIT_PENDING is not */
529 return test_bit(STATUS_READY
, &priv
->status
) &&
530 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) &&
531 !test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
534 static inline int iwl_is_alive(struct iwl_priv
*priv
)
536 return test_bit(STATUS_ALIVE
, &priv
->status
);
539 static inline int iwl_is_init(struct iwl_priv
*priv
)
541 return test_bit(STATUS_INIT
, &priv
->status
);
544 static inline int iwl_is_rfkill(struct iwl_priv
*priv
)
546 return test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ||
547 test_bit(STATUS_RF_KILL_SW
, &priv
->status
);
550 static inline int iwl_is_ready_rf(struct iwl_priv
*priv
)
553 if (iwl_is_rfkill(priv
))
556 return iwl_is_ready(priv
);
559 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
561 #define IWL_CMD(x) case x : return #x
563 static const char *get_cmd_string(u8 cmd
)
566 IWL_CMD(REPLY_ALIVE
);
567 IWL_CMD(REPLY_ERROR
);
569 IWL_CMD(REPLY_RXON_ASSOC
);
570 IWL_CMD(REPLY_QOS_PARAM
);
571 IWL_CMD(REPLY_RXON_TIMING
);
572 IWL_CMD(REPLY_ADD_STA
);
573 IWL_CMD(REPLY_REMOVE_STA
);
574 IWL_CMD(REPLY_REMOVE_ALL_STA
);
576 IWL_CMD(REPLY_RATE_SCALE
);
577 IWL_CMD(REPLY_LEDS_CMD
);
578 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD
);
579 IWL_CMD(RADAR_NOTIFICATION
);
580 IWL_CMD(REPLY_QUIET_CMD
);
581 IWL_CMD(REPLY_CHANNEL_SWITCH
);
582 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION
);
583 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD
);
584 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION
);
585 IWL_CMD(POWER_TABLE_CMD
);
586 IWL_CMD(PM_SLEEP_NOTIFICATION
);
587 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC
);
588 IWL_CMD(REPLY_SCAN_CMD
);
589 IWL_CMD(REPLY_SCAN_ABORT_CMD
);
590 IWL_CMD(SCAN_START_NOTIFICATION
);
591 IWL_CMD(SCAN_RESULTS_NOTIFICATION
);
592 IWL_CMD(SCAN_COMPLETE_NOTIFICATION
);
593 IWL_CMD(BEACON_NOTIFICATION
);
594 IWL_CMD(REPLY_TX_BEACON
);
595 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION
);
596 IWL_CMD(QUIET_NOTIFICATION
);
597 IWL_CMD(REPLY_TX_PWR_TABLE_CMD
);
598 IWL_CMD(MEASURE_ABORT_NOTIFICATION
);
599 IWL_CMD(REPLY_BT_CONFIG
);
600 IWL_CMD(REPLY_STATISTICS_CMD
);
601 IWL_CMD(STATISTICS_NOTIFICATION
);
602 IWL_CMD(REPLY_CARD_STATE_CMD
);
603 IWL_CMD(CARD_STATE_NOTIFICATION
);
604 IWL_CMD(MISSED_BEACONS_NOTIFICATION
);
605 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD
);
606 IWL_CMD(SENSITIVITY_CMD
);
607 IWL_CMD(REPLY_PHY_CALIBRATION_CMD
);
608 IWL_CMD(REPLY_RX_PHY_CMD
);
609 IWL_CMD(REPLY_RX_MPDU_CMD
);
610 IWL_CMD(REPLY_4965_RX
);
611 IWL_CMD(REPLY_COMPRESSED_BA
);
618 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
621 * iwl_enqueue_hcmd - enqueue a uCode command
622 * @priv: device private data point
623 * @cmd: a point to the ucode command structure
625 * The function returns < 0 values to indicate the operation is
626 * failed. On success, it turns the index (> 0) of command in the
629 static int iwl_enqueue_hcmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
631 struct iwl_tx_queue
*txq
= &priv
->txq
[IWL_CMD_QUEUE_NUM
];
632 struct iwl_queue
*q
= &txq
->q
;
633 struct iwl_tfd_frame
*tfd
;
635 struct iwl_cmd
*out_cmd
;
637 u16 fix_size
= (u16
)(cmd
->len
+ sizeof(out_cmd
->hdr
));
638 dma_addr_t phys_addr
;
642 /* If any of the command structures end up being larger than
643 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
644 * we will need to increase the size of the TFD entries */
645 BUG_ON((fix_size
> TFD_MAX_PAYLOAD_SIZE
) &&
646 !(cmd
->meta
.flags
& CMD_SIZE_HUGE
));
648 if (iwl_queue_space(q
) < ((cmd
->meta
.flags
& CMD_ASYNC
) ? 2 : 1)) {
649 IWL_ERROR("No space for Tx\n");
653 spin_lock_irqsave(&priv
->hcmd_lock
, flags
);
655 tfd
= &txq
->bd
[q
->write_ptr
];
656 memset(tfd
, 0, sizeof(*tfd
));
658 control_flags
= (u32
*) tfd
;
660 idx
= get_cmd_index(q
, q
->write_ptr
, cmd
->meta
.flags
& CMD_SIZE_HUGE
);
661 out_cmd
= &txq
->cmd
[idx
];
663 out_cmd
->hdr
.cmd
= cmd
->id
;
664 memcpy(&out_cmd
->meta
, &cmd
->meta
, sizeof(cmd
->meta
));
665 memcpy(&out_cmd
->cmd
.payload
, cmd
->data
, cmd
->len
);
667 /* At this point, the out_cmd now has all of the incoming cmd
670 out_cmd
->hdr
.flags
= 0;
671 out_cmd
->hdr
.sequence
= cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM
) |
672 INDEX_TO_SEQ(q
->write_ptr
));
673 if (out_cmd
->meta
.flags
& CMD_SIZE_HUGE
)
674 out_cmd
->hdr
.sequence
|= cpu_to_le16(SEQ_HUGE_FRAME
);
676 phys_addr
= txq
->dma_addr_cmd
+ sizeof(txq
->cmd
[0]) * idx
+
677 offsetof(struct iwl_cmd
, hdr
);
678 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, fix_size
);
680 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
681 "%d bytes at %d[%d]:%d\n",
682 get_cmd_string(out_cmd
->hdr
.cmd
),
683 out_cmd
->hdr
.cmd
, le16_to_cpu(out_cmd
->hdr
.sequence
),
684 fix_size
, q
->write_ptr
, idx
, IWL_CMD_QUEUE_NUM
);
686 txq
->need_update
= 1;
687 ret
= iwl4965_tx_queue_update_wr_ptr(priv
, txq
, 0);
688 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
689 iwl_tx_queue_update_write_ptr(priv
, txq
);
691 spin_unlock_irqrestore(&priv
->hcmd_lock
, flags
);
692 return ret
? ret
: idx
;
695 int iwl_send_cmd_async(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
699 BUG_ON(!(cmd
->meta
.flags
& CMD_ASYNC
));
701 /* An asynchronous command can not expect an SKB to be set. */
702 BUG_ON(cmd
->meta
.flags
& CMD_WANT_SKB
);
704 /* An asynchronous command MUST have a callback. */
705 BUG_ON(!cmd
->meta
.u
.callback
);
707 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
710 ret
= iwl_enqueue_hcmd(priv
, cmd
);
712 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
713 get_cmd_string(cmd
->id
), ret
);
719 int iwl_send_cmd_sync(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
723 static atomic_t entry
= ATOMIC_INIT(0); /* reentrance protection */
725 BUG_ON(cmd
->meta
.flags
& CMD_ASYNC
);
727 /* A synchronous command can not have a callback set. */
728 BUG_ON(cmd
->meta
.u
.callback
!= NULL
);
730 if (atomic_xchg(&entry
, 1)) {
731 IWL_ERROR("Error sending %s: Already sending a host command\n",
732 get_cmd_string(cmd
->id
));
736 set_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
738 if (cmd
->meta
.flags
& CMD_WANT_SKB
)
739 cmd
->meta
.source
= &cmd
->meta
;
741 cmd_idx
= iwl_enqueue_hcmd(priv
, cmd
);
744 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
745 get_cmd_string(cmd
->id
), ret
);
749 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
750 !test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
),
751 HOST_COMPLETE_TIMEOUT
);
753 if (test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
)) {
754 IWL_ERROR("Error sending %s: time out after %dms.\n",
755 get_cmd_string(cmd
->id
),
756 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT
));
758 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
764 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
765 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
766 get_cmd_string(cmd
->id
));
770 if (test_bit(STATUS_FW_ERROR
, &priv
->status
)) {
771 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
772 get_cmd_string(cmd
->id
));
776 if ((cmd
->meta
.flags
& CMD_WANT_SKB
) && !cmd
->meta
.u
.skb
) {
777 IWL_ERROR("Error: Response NULL in '%s'\n",
778 get_cmd_string(cmd
->id
));
787 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
788 struct iwl_cmd
*qcmd
;
790 /* Cancel the CMD_WANT_SKB flag for the cmd in the
791 * TX cmd queue. Otherwise in case the cmd comes
792 * in later, it will possibly set an invalid
793 * address (cmd->meta.source). */
794 qcmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_idx
];
795 qcmd
->meta
.flags
&= ~CMD_WANT_SKB
;
798 if (cmd
->meta
.u
.skb
) {
799 dev_kfree_skb_any(cmd
->meta
.u
.skb
);
800 cmd
->meta
.u
.skb
= NULL
;
803 atomic_set(&entry
, 0);
807 int iwl_send_cmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
809 if (cmd
->meta
.flags
& CMD_ASYNC
)
810 return iwl_send_cmd_async(priv
, cmd
);
812 return iwl_send_cmd_sync(priv
, cmd
);
815 int iwl_send_cmd_pdu(struct iwl_priv
*priv
, u8 id
, u16 len
, const void *data
)
817 struct iwl_host_cmd cmd
= {
823 return iwl_send_cmd_sync(priv
, &cmd
);
826 static int __must_check
iwl_send_cmd_u32(struct iwl_priv
*priv
, u8 id
, u32 val
)
828 struct iwl_host_cmd cmd
= {
834 return iwl_send_cmd_sync(priv
, &cmd
);
837 int iwl_send_statistics_request(struct iwl_priv
*priv
)
839 return iwl_send_cmd_u32(priv
, REPLY_STATISTICS_CMD
, 0);
843 * iwl_rxon_add_station - add station into station table.
845 * there is only one AP station with id= IWL_AP_ID
846 * NOTE: mutex must be held before calling the this fnction
848 static int iwl_rxon_add_station(struct iwl_priv
*priv
,
849 const u8
*addr
, int is_ap
)
853 sta_id
= iwl_add_station(priv
, addr
, is_ap
, 0);
854 iwl4965_add_station(priv
, addr
, is_ap
);
860 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
861 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
862 * @channel: Any channel valid for the requested phymode
864 * In addition to setting the staging RXON, priv->phymode is also set.
866 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
867 * in the staging RXON flag structure based on the phymode
869 static int iwl_set_rxon_channel(struct iwl_priv
*priv
, u8 phymode
, u16 channel
)
871 if (!iwl_get_channel_info(priv
, phymode
, channel
)) {
872 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
877 if ((le16_to_cpu(priv
->staging_rxon
.channel
) == channel
) &&
878 (priv
->phymode
== phymode
))
881 priv
->staging_rxon
.channel
= cpu_to_le16(channel
);
882 if (phymode
== MODE_IEEE80211A
)
883 priv
->staging_rxon
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
885 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
887 priv
->phymode
= phymode
;
889 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel
, phymode
);
895 * iwl_check_rxon_cmd - validate RXON structure is valid
897 * NOTE: This is really only useful during development and can eventually
898 * be #ifdef'd out once the driver is stable and folks aren't actively
901 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd
*rxon
)
906 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
907 error
|= le32_to_cpu(rxon
->flags
&
908 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
909 RXON_FLG_RADAR_DETECT_MSK
));
911 IWL_WARNING("check 24G fields %d | %d\n",
914 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
915 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
917 IWL_WARNING("check 52 fields %d | %d\n",
919 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
921 IWL_WARNING("check 52 CCK %d | %d\n",
924 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
926 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
928 /* make sure basic rates 6Mbps and 1Mbps are supported */
929 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
930 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
932 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
934 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
936 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
938 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
939 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
941 IWL_WARNING("check CCK and short slot %d | %d\n",
944 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
945 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
947 IWL_WARNING("check CCK & auto detect %d | %d\n",
950 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
951 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
953 IWL_WARNING("check TGG and auto detect %d | %d\n",
957 IWL_WARNING("Tuning to channel %d\n",
958 le16_to_cpu(rxon
->channel
));
961 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
968 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
969 * @priv: staging_rxon is compared to active_rxon
971 * If the RXON structure is changing sufficient to require a new
972 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
973 * to indicate a new tune is required.
975 static int iwl_full_rxon_required(struct iwl_priv
*priv
)
978 /* These items are only settable from the full RXON command */
979 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
980 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
981 priv
->active_rxon
.bssid_addr
) ||
982 compare_ether_addr(priv
->staging_rxon
.node_addr
,
983 priv
->active_rxon
.node_addr
) ||
984 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
985 priv
->active_rxon
.wlap_bssid_addr
) ||
986 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
987 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
988 (priv
->staging_rxon
.air_propagation
!=
989 priv
->active_rxon
.air_propagation
) ||
990 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
991 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
992 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
993 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
994 (priv
->staging_rxon
.rx_chain
!= priv
->active_rxon
.rx_chain
) ||
995 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
998 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
999 * be updated with the RXON_ASSOC command -- however only some
1000 * flag transitions are allowed using RXON_ASSOC */
1002 /* Check if we are not switching bands */
1003 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
1004 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
1007 /* Check if we are switching association toggle */
1008 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
1009 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
1015 static int iwl_send_rxon_assoc(struct iwl_priv
*priv
)
1018 struct iwl_rx_packet
*res
= NULL
;
1019 struct iwl_rxon_assoc_cmd rxon_assoc
;
1020 struct iwl_host_cmd cmd
= {
1021 .id
= REPLY_RXON_ASSOC
,
1022 .len
= sizeof(rxon_assoc
),
1023 .meta
.flags
= CMD_WANT_SKB
,
1024 .data
= &rxon_assoc
,
1026 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1027 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1029 if ((rxon1
->flags
== rxon2
->flags
) &&
1030 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1031 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1032 (rxon1
->ofdm_ht_single_stream_basic_rates
==
1033 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
1034 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
1035 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
1036 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
1037 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1038 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1042 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1043 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1044 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1045 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1046 rxon_assoc
.reserved
= 0;
1047 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
1048 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
1049 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
1050 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
1051 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
1053 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1057 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1058 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1059 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1063 priv
->alloc_rxb_skb
--;
1064 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1070 * iwl_commit_rxon - commit staging_rxon to hardware
1072 * The RXON command in staging_rxon is committed to the hardware and
1073 * the active_rxon structure is updated with the new data. This
1074 * function correctly transitions out of the RXON_ASSOC_MSK state if
1075 * a HW tune is required based on the RXON structure changes.
1077 static int iwl_commit_rxon(struct iwl_priv
*priv
)
1079 /* cast away the const for active_rxon in this function */
1080 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1081 DECLARE_MAC_BUF(mac
);
1084 if (!iwl_is_alive(priv
))
1087 /* always get timestamp with Rx frame */
1088 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
1090 rc
= iwl_check_rxon_cmd(&priv
->staging_rxon
);
1092 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1096 /* If we don't need to send a full RXON, we can use
1097 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1098 * and other flags for the current radio configuration. */
1099 if (!iwl_full_rxon_required(priv
)) {
1100 rc
= iwl_send_rxon_assoc(priv
);
1102 IWL_ERROR("Error setting RXON_ASSOC "
1103 "configuration (%d).\n", rc
);
1107 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1112 /* station table will be cleared */
1113 priv
->assoc_station_added
= 0;
1115 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1116 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1117 if (!priv
->error_recovering
)
1118 priv
->start_calib
= 0;
1120 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1121 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1123 /* If we are currently associated and the new config requires
1124 * an RXON_ASSOC and the new config wants the associated mask enabled,
1125 * we must clear the associated from the active configuration
1126 * before we apply the new config */
1127 if (iwl_is_associated(priv
) &&
1128 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
1129 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1130 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1132 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1133 sizeof(struct iwl_rxon_cmd
),
1134 &priv
->active_rxon
);
1136 /* If the mask clearing failed then we set
1137 * active_rxon back to what it was previously */
1139 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1140 IWL_ERROR("Error clearing ASSOC_MSK on current "
1141 "configuration (%d).\n", rc
);
1146 IWL_DEBUG_INFO("Sending RXON\n"
1147 "* with%s RXON_FILTER_ASSOC_MSK\n"
1150 ((priv
->staging_rxon
.filter_flags
&
1151 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
1152 le16_to_cpu(priv
->staging_rxon
.channel
),
1153 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
1155 /* Apply the new configuration */
1156 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1157 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
1159 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
1163 iwl_clear_stations_table(priv
);
1165 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1166 if (!priv
->error_recovering
)
1167 priv
->start_calib
= 0;
1169 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1170 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1171 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1173 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1175 /* If we issue a new RXON command which required a tune then we must
1176 * send a new TXPOWER command or we won't be able to Tx any frames */
1177 rc
= iwl_hw_reg_send_txpower(priv
);
1179 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
1183 /* Add the broadcast address so we can send broadcast frames */
1184 if (iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0) ==
1185 IWL_INVALID_STATION
) {
1186 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1190 /* If we have set the ASSOC_MSK and we are in BSS mode then
1191 * add the IWL_AP_ID to the station rate table */
1192 if (iwl_is_associated(priv
) &&
1193 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
1194 if (iwl_rxon_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1)
1195 == IWL_INVALID_STATION
) {
1196 IWL_ERROR("Error adding AP address for transmit.\n");
1199 priv
->assoc_station_added
= 1;
1205 static int iwl_send_bt_config(struct iwl_priv
*priv
)
1207 struct iwl_bt_cmd bt_cmd
= {
1215 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1216 sizeof(struct iwl_bt_cmd
), &bt_cmd
);
1219 static int iwl_send_scan_abort(struct iwl_priv
*priv
)
1222 struct iwl_rx_packet
*res
;
1223 struct iwl_host_cmd cmd
= {
1224 .id
= REPLY_SCAN_ABORT_CMD
,
1225 .meta
.flags
= CMD_WANT_SKB
,
1228 /* If there isn't a scan actively going on in the hardware
1229 * then we are in between scan bands and not actually
1230 * actively scanning, so don't send the abort command */
1231 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1232 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1236 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1238 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1242 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1243 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
1244 /* The scan abort will return 1 for success or
1245 * 2 for "failure". A failure condition can be
1246 * due to simply not being in an active scan which
1247 * can occur if we send the scan abort before we
1248 * the microcode has notified us that a scan is
1250 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
1251 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1252 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
1255 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1260 static int iwl_card_state_sync_callback(struct iwl_priv
*priv
,
1261 struct iwl_cmd
*cmd
,
1262 struct sk_buff
*skb
)
1270 * Use: Sets the internal card state to enable, disable, or halt
1272 * When in the 'enable' state the card operates as normal.
1273 * When in the 'disable' state, the card enters into a low power mode.
1274 * When in the 'halt' state, the card is shut down and must be fully
1275 * restarted to come back on.
1277 static int iwl_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1279 struct iwl_host_cmd cmd
= {
1280 .id
= REPLY_CARD_STATE_CMD
,
1283 .meta
.flags
= meta_flag
,
1286 if (meta_flag
& CMD_ASYNC
)
1287 cmd
.meta
.u
.callback
= iwl_card_state_sync_callback
;
1289 return iwl_send_cmd(priv
, &cmd
);
1292 static int iwl_add_sta_sync_callback(struct iwl_priv
*priv
,
1293 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1295 struct iwl_rx_packet
*res
= NULL
;
1298 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1302 res
= (struct iwl_rx_packet
*)skb
->data
;
1303 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1304 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1309 switch (res
->u
.add_sta
.status
) {
1310 case ADD_STA_SUCCESS_MSK
:
1316 /* We didn't cache the SKB; let the caller free it */
1320 int iwl_send_add_station(struct iwl_priv
*priv
,
1321 struct iwl_addsta_cmd
*sta
, u8 flags
)
1323 struct iwl_rx_packet
*res
= NULL
;
1325 struct iwl_host_cmd cmd
= {
1326 .id
= REPLY_ADD_STA
,
1327 .len
= sizeof(struct iwl_addsta_cmd
),
1328 .meta
.flags
= flags
,
1332 if (flags
& CMD_ASYNC
)
1333 cmd
.meta
.u
.callback
= iwl_add_sta_sync_callback
;
1335 cmd
.meta
.flags
|= CMD_WANT_SKB
;
1337 rc
= iwl_send_cmd(priv
, &cmd
);
1339 if (rc
|| (flags
& CMD_ASYNC
))
1342 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1343 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1344 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1350 switch (res
->u
.add_sta
.status
) {
1351 case ADD_STA_SUCCESS_MSK
:
1352 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1356 IWL_WARNING("REPLY_ADD_STA failed\n");
1361 priv
->alloc_rxb_skb
--;
1362 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1367 static int iwl_update_sta_key_info(struct iwl_priv
*priv
,
1368 struct ieee80211_key_conf
*keyconf
,
1371 unsigned long flags
;
1372 __le16 key_flags
= 0;
1374 switch (keyconf
->alg
) {
1376 key_flags
|= STA_KEY_FLG_CCMP
;
1377 key_flags
|= cpu_to_le16(
1378 keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1379 key_flags
&= ~STA_KEY_FLG_INVALID
;
1386 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1387 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1388 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
1389 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
1392 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
1394 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
1395 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1396 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1398 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1400 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1401 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1405 static int iwl_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
1407 unsigned long flags
;
1409 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1410 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
1411 memset(&priv
->stations
[sta_id
].sta
.key
, 0, sizeof(struct iwl_keyinfo
));
1412 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
1413 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1414 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1415 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1417 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1418 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1422 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
1424 struct list_head
*element
;
1426 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1427 priv
->frames_count
);
1429 while (!list_empty(&priv
->free_frames
)) {
1430 element
= priv
->free_frames
.next
;
1432 kfree(list_entry(element
, struct iwl_frame
, list
));
1433 priv
->frames_count
--;
1436 if (priv
->frames_count
) {
1437 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1438 priv
->frames_count
);
1439 priv
->frames_count
= 0;
1443 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
1445 struct iwl_frame
*frame
;
1446 struct list_head
*element
;
1447 if (list_empty(&priv
->free_frames
)) {
1448 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1450 IWL_ERROR("Could not allocate frame!\n");
1454 priv
->frames_count
++;
1458 element
= priv
->free_frames
.next
;
1460 return list_entry(element
, struct iwl_frame
, list
);
1463 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
1465 memset(frame
, 0, sizeof(*frame
));
1466 list_add(&frame
->list
, &priv
->free_frames
);
1469 unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
1470 struct ieee80211_hdr
*hdr
,
1471 const u8
*dest
, int left
)
1474 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1475 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1476 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1479 if (priv
->ibss_beacon
->len
> left
)
1482 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1484 return priv
->ibss_beacon
->len
;
1487 int iwl_rate_index_from_plcp(int plcp
)
1491 if (plcp
& RATE_MCS_HT_MSK
) {
1494 if (i
>= IWL_RATE_MIMO_6M_PLCP
)
1495 i
= i
- IWL_RATE_MIMO_6M_PLCP
;
1497 i
+= IWL_FIRST_OFDM_RATE
;
1498 /* skip 9M not supported in ht*/
1499 if (i
>= IWL_RATE_9M_INDEX
)
1501 if ((i
>= IWL_FIRST_OFDM_RATE
) &&
1502 (i
<= IWL_LAST_OFDM_RATE
))
1505 for (i
= 0; i
< ARRAY_SIZE(iwl_rates
); i
++)
1506 if (iwl_rates
[i
].plcp
== (plcp
&0xFF))
1512 static u8
iwl_rate_get_lowest_plcp(int rate_mask
)
1516 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1517 i
= iwl_rates
[i
].next_ieee
) {
1518 if (rate_mask
& (1 << i
))
1519 return iwl_rates
[i
].plcp
;
1522 return IWL_RATE_INVALID
;
1525 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
1527 struct iwl_frame
*frame
;
1528 unsigned int frame_size
;
1532 frame
= iwl_get_free_frame(priv
);
1535 IWL_ERROR("Could not obtain free frame buffer for beacon "
1540 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1541 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
&
1543 if (rate
== IWL_INVALID_RATE
)
1544 rate
= IWL_RATE_6M_PLCP
;
1546 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1547 if (rate
== IWL_INVALID_RATE
)
1548 rate
= IWL_RATE_1M_PLCP
;
1551 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
1553 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1556 iwl_free_frame(priv
, frame
);
1561 /******************************************************************************
1563 * EEPROM related functions
1565 ******************************************************************************/
1567 static void get_eeprom_mac(struct iwl_priv
*priv
, u8
*mac
)
1569 memcpy(mac
, priv
->eeprom
.mac_address
, 6);
1573 * iwl_eeprom_init - read EEPROM contents
1575 * Load the EEPROM from adapter into priv->eeprom
1577 * NOTE: This routine uses the non-debug IO access functions.
1579 int iwl_eeprom_init(struct iwl_priv
*priv
)
1581 u16
*e
= (u16
*)&priv
->eeprom
;
1582 u32 gp
= iwl_read32(priv
, CSR_EEPROM_GP
);
1584 int sz
= sizeof(priv
->eeprom
);
1589 /* The EEPROM structure has several padding buffers within it
1590 * and when adding new EEPROM maps is subject to programmer errors
1591 * which may be very difficult to identify without explicitly
1592 * checking the resulting size of the eeprom map. */
1593 BUILD_BUG_ON(sizeof(priv
->eeprom
) != IWL_EEPROM_IMAGE_SIZE
);
1595 if ((gp
& CSR_EEPROM_GP_VALID_MSK
) == CSR_EEPROM_GP_BAD_SIGNATURE
) {
1596 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp
);
1600 rc
= iwl_eeprom_acquire_semaphore(priv
);
1602 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1606 /* eeprom is an array of 16bit values */
1607 for (addr
= 0; addr
< sz
; addr
+= sizeof(u16
)) {
1608 _iwl_write32(priv
, CSR_EEPROM_REG
, addr
<< 1);
1609 _iwl_clear_bit(priv
, CSR_EEPROM_REG
, CSR_EEPROM_REG_BIT_CMD
);
1611 for (i
= 0; i
< IWL_EEPROM_ACCESS_TIMEOUT
;
1612 i
+= IWL_EEPROM_ACCESS_DELAY
) {
1613 r
= _iwl_read_restricted(priv
, CSR_EEPROM_REG
);
1614 if (r
& CSR_EEPROM_REG_READ_VALID_MSK
)
1616 udelay(IWL_EEPROM_ACCESS_DELAY
);
1619 if (!(r
& CSR_EEPROM_REG_READ_VALID_MSK
)) {
1620 IWL_ERROR("Time out reading EEPROM[%d]", addr
);
1624 e
[addr
/ 2] = le16_to_cpu(r
>> 16);
1629 iwl_eeprom_release_semaphore(priv
);
1633 /******************************************************************************
1635 * Misc. internal state and helper functions
1637 ******************************************************************************/
1638 #ifdef CONFIG_IWLWIFI_DEBUG
1641 * iwl_report_frame - dump frame to syslog during debug sessions
1643 * hack this function to show different aspects of received frames,
1644 * including selective frame dumps.
1645 * group100 parameter selects whether to show 1 out of 100 good frames.
1647 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1648 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1649 * is 3945-specific and gives bad output for 4965. Need to split the
1650 * functionality, keep common stuff here.
1652 void iwl_report_frame(struct iwl_priv
*priv
,
1653 struct iwl_rx_packet
*pkt
,
1654 struct ieee80211_hdr
*header
, int group100
)
1657 u32 print_summary
= 0;
1658 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
1675 struct iwl_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
1676 struct iwl_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
1677 struct iwl_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
1678 u8
*data
= IWL_RX_DATA(pkt
);
1681 fc
= le16_to_cpu(header
->frame_control
);
1682 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
1685 channel
= le16_to_cpu(rx_hdr
->channel
);
1686 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
1687 rate_sym
= rx_hdr
->rate
;
1688 length
= le16_to_cpu(rx_hdr
->len
);
1690 /* end-of-frame status and timestamp */
1691 status
= le32_to_cpu(rx_end
->status
);
1692 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
1693 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
1694 tsf
= le64_to_cpu(rx_end
->timestamp
);
1696 /* signal statistics */
1697 rssi
= rx_stats
->rssi
;
1698 agc
= rx_stats
->agc
;
1699 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
1700 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
1702 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1704 /* if data frame is to us and all is good,
1705 * (optionally) print summary for only 1 out of every 100 */
1706 if (to_us
&& (fc
& ~IEEE80211_FCTL_PROTECTED
) ==
1707 (IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
1710 print_summary
= 1; /* print each frame */
1711 else if (priv
->framecnt_to_us
< 100) {
1712 priv
->framecnt_to_us
++;
1715 priv
->framecnt_to_us
= 0;
1720 /* print summary for all other frames */
1724 if (print_summary
) {
1729 title
= "100Frames";
1730 else if (fc
& IEEE80211_FCTL_RETRY
)
1732 else if (ieee80211_is_assoc_response(fc
))
1734 else if (ieee80211_is_reassoc_response(fc
))
1736 else if (ieee80211_is_probe_response(fc
)) {
1738 print_dump
= 1; /* dump frame contents */
1739 } else if (ieee80211_is_beacon(fc
)) {
1741 print_dump
= 1; /* dump frame contents */
1742 } else if (ieee80211_is_atim(fc
))
1744 else if (ieee80211_is_auth(fc
))
1746 else if (ieee80211_is_deauth(fc
))
1748 else if (ieee80211_is_disassoc(fc
))
1753 rate
= iwl_rate_index_from_plcp(rate_sym
);
1757 rate
= iwl_rates
[rate
].ieee
/ 2;
1759 /* print frame summary.
1760 * MAC addresses show just the last byte (for brevity),
1761 * but you can hack it to show more, if you'd like to. */
1763 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1764 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1765 title
, fc
, header
->addr1
[5],
1766 length
, rssi
, channel
, rate
);
1768 /* src/dst addresses assume managed mode */
1769 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1770 "src=0x%02x, rssi=%u, tim=%lu usec, "
1771 "phy=0x%02x, chnl=%d\n",
1772 title
, fc
, header
->addr1
[5],
1773 header
->addr3
[5], rssi
,
1774 tsf_low
- priv
->scan_start_tsf
,
1775 phy_flags
, channel
);
1779 iwl_print_hex_dump(IWL_DL_RX
, data
, length
);
1783 static void iwl_unset_hw_setting(struct iwl_priv
*priv
)
1785 if (priv
->hw_setting
.shared_virt
)
1786 pci_free_consistent(priv
->pci_dev
,
1787 sizeof(struct iwl_shared
),
1788 priv
->hw_setting
.shared_virt
,
1789 priv
->hw_setting
.shared_phys
);
1793 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1795 * return : set the bit for each supported rate insert in ie
1797 static u16
iwl_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1798 u16 basic_rate
, int *left
)
1800 u16 ret_rates
= 0, bit
;
1805 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1806 if (bit
& supported_rate
) {
1808 rates
[*cnt
] = iwl_rates
[i
].ieee
|
1809 ((bit
& basic_rate
) ? 0x80 : 0x00);
1813 (*cnt
>= IWL_SUPPORTED_RATES_IE_LEN
))
1821 #ifdef CONFIG_IWLWIFI_HT
1822 void static iwl_set_ht_capab(struct ieee80211_hw
*hw
,
1823 struct ieee80211_ht_capability
*ht_cap
,
1828 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1830 static u16
iwl_fill_probe_req(struct iwl_priv
*priv
,
1831 struct ieee80211_mgmt
*frame
,
1832 int left
, int is_direct
)
1836 u16 active_rates
, ret_rates
, cck_rates
;
1838 /* Make sure there is enough space for the probe request,
1839 * two mandatory IEs and the data */
1845 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1846 memcpy(frame
->da
, BROADCAST_ADDR
, ETH_ALEN
);
1847 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1848 memcpy(frame
->bssid
, BROADCAST_ADDR
, ETH_ALEN
);
1849 frame
->seq_ctrl
= 0;
1851 /* fill in our indirect SSID IE */
1858 pos
= &(frame
->u
.probe_req
.variable
[0]);
1859 *pos
++ = WLAN_EID_SSID
;
1862 /* fill in our direct SSID IE... */
1865 left
-= 2 + priv
->essid_len
;
1868 /* ... fill it in... */
1869 *pos
++ = WLAN_EID_SSID
;
1870 *pos
++ = priv
->essid_len
;
1871 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1872 pos
+= priv
->essid_len
;
1873 len
+= 2 + priv
->essid_len
;
1876 /* fill in supported rate */
1882 /* ... fill it in... */
1883 *pos
++ = WLAN_EID_SUPP_RATES
;
1886 priv
->active_rate
= priv
->rates_mask
;
1887 active_rates
= priv
->active_rate
;
1888 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1890 cck_rates
= IWL_CCK_RATES_MASK
& active_rates
;
1891 ret_rates
= iwl_supported_rate_to_ie(pos
, cck_rates
,
1892 priv
->active_rate_basic
, &left
);
1893 active_rates
&= ~ret_rates
;
1895 ret_rates
= iwl_supported_rate_to_ie(pos
, active_rates
,
1896 priv
->active_rate_basic
, &left
);
1897 active_rates
&= ~ret_rates
;
1901 if (active_rates
== 0)
1904 /* fill in supported extended rate */
1909 /* ... fill it in... */
1910 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1912 iwl_supported_rate_to_ie(pos
, active_rates
,
1913 priv
->active_rate_basic
, &left
);
1917 #ifdef CONFIG_IWLWIFI_HT
1918 if (is_direct
&& priv
->is_ht_enabled
) {
1919 u8 use_wide_chan
= 1;
1921 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
1924 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1925 *pos
++ = sizeof(struct ieee80211_ht_capability
);
1926 iwl_set_ht_capab(NULL
, (struct ieee80211_ht_capability
*)pos
,
1928 len
+= 2 + sizeof(struct ieee80211_ht_capability
);
1930 #endif /*CONFIG_IWLWIFI_HT */
1939 #ifdef CONFIG_IWLWIFI_QOS
1940 static int iwl_send_qos_params_command(struct iwl_priv
*priv
,
1941 struct iwl_qosparam_cmd
*qos
)
1944 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1945 sizeof(struct iwl_qosparam_cmd
), qos
);
1948 static void iwl_reset_qos(struct iwl_priv
*priv
)
1954 unsigned long flags
;
1957 spin_lock_irqsave(&priv
->lock
, flags
);
1958 priv
->qos_data
.qos_active
= 0;
1960 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) {
1961 if (priv
->qos_data
.qos_enable
)
1962 priv
->qos_data
.qos_active
= 1;
1963 if (!(priv
->active_rate
& 0xfff0)) {
1967 } else if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1968 if (priv
->qos_data
.qos_enable
)
1969 priv
->qos_data
.qos_active
= 1;
1970 } else if (!(priv
->staging_rxon
.flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
1975 if (priv
->qos_data
.qos_active
)
1978 priv
->qos_data
.def_qos_parm
.ac
[0].cw_min
= cpu_to_le16(cw_min
);
1979 priv
->qos_data
.def_qos_parm
.ac
[0].cw_max
= cpu_to_le16(cw_max
);
1980 priv
->qos_data
.def_qos_parm
.ac
[0].aifsn
= aifs
;
1981 priv
->qos_data
.def_qos_parm
.ac
[0].edca_txop
= 0;
1982 priv
->qos_data
.def_qos_parm
.ac
[0].reserved1
= 0;
1984 if (priv
->qos_data
.qos_active
) {
1986 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
= cpu_to_le16(cw_min
);
1987 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
= cpu_to_le16(cw_max
);
1988 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 7;
1989 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1990 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1993 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1994 cpu_to_le16((cw_min
+ 1) / 2 - 1);
1995 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
1996 cpu_to_le16(cw_max
);
1997 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
1999 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2002 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2004 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2007 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2008 cpu_to_le16((cw_min
+ 1) / 4 - 1);
2009 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2010 cpu_to_le16((cw_max
+ 1) / 2 - 1);
2011 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2012 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2014 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2017 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2020 for (i
= 1; i
< 4; i
++) {
2021 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2022 cpu_to_le16(cw_min
);
2023 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2024 cpu_to_le16(cw_max
);
2025 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= aifs
;
2026 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
2027 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2030 IWL_DEBUG_QOS("set QoS to default \n");
2032 spin_unlock_irqrestore(&priv
->lock
, flags
);
2035 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
2037 unsigned long flags
;
2039 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2042 if (!priv
->qos_data
.qos_enable
)
2045 spin_lock_irqsave(&priv
->lock
, flags
);
2046 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
2048 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
2049 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
2050 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2051 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
2052 if (priv
->qos_data
.qos_active
)
2053 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2054 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
2056 #ifdef CONFIG_IWLWIFI_HT
2057 if (priv
->is_ht_enabled
&& priv
->current_assoc_ht
.is_ht
)
2058 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
2059 #endif /* CONFIG_IWLWIFI_HT */
2061 spin_unlock_irqrestore(&priv
->lock
, flags
);
2063 if (force
|| iwl_is_associated(priv
)) {
2064 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2065 priv
->qos_data
.qos_active
,
2066 priv
->qos_data
.def_qos_parm
.qos_flags
);
2068 iwl_send_qos_params_command(priv
,
2069 &(priv
->qos_data
.def_qos_parm
));
2073 #endif /* CONFIG_IWLWIFI_QOS */
2075 * Power management (not Tx power!) functions
2077 #define MSEC_TO_USEC 1024
2079 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2080 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2081 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2082 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2083 __constant_cpu_to_le32(X1), \
2084 __constant_cpu_to_le32(X2), \
2085 __constant_cpu_to_le32(X3), \
2086 __constant_cpu_to_le32(X4)}
2089 /* default power management (not Tx power) table values */
2091 static struct iwl_power_vec_entry range_0
[IWL_POWER_AC
] = {
2092 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2093 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2094 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2095 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2096 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2097 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2101 static struct iwl_power_vec_entry range_1
[IWL_POWER_AC
] = {
2102 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2103 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2104 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2105 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2106 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2107 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2108 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2109 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2110 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2111 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2114 int iwl_power_init_handle(struct iwl_priv
*priv
)
2117 struct iwl_power_mgr
*pow_data
;
2118 int size
= sizeof(struct iwl_power_vec_entry
) * IWL_POWER_AC
;
2121 IWL_DEBUG_POWER("Initialize power \n");
2123 pow_data
= &(priv
->power_data
);
2125 memset(pow_data
, 0, sizeof(*pow_data
));
2127 pow_data
->active_index
= IWL_POWER_RANGE_0
;
2128 pow_data
->dtim_val
= 0xffff;
2130 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
2131 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
2133 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
2137 struct iwl_powertable_cmd
*cmd
;
2139 IWL_DEBUG_POWER("adjust power command flags\n");
2141 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
2142 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
2145 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
2147 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
2153 static int iwl_update_power_cmd(struct iwl_priv
*priv
,
2154 struct iwl_powertable_cmd
*cmd
, u32 mode
)
2159 struct iwl_power_vec_entry
*range
;
2161 struct iwl_power_mgr
*pow_data
;
2163 if (mode
> IWL_POWER_INDEX_5
) {
2164 IWL_DEBUG_POWER("Error invalid power mode \n");
2167 pow_data
= &(priv
->power_data
);
2169 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
2170 range
= &pow_data
->pwr_range_0
[0];
2172 range
= &pow_data
->pwr_range_1
[1];
2174 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl_powertable_cmd
));
2176 #ifdef IWL_MAC80211_DISABLE
2177 if (priv
->assoc_network
!= NULL
) {
2178 unsigned long flags
;
2180 period
= priv
->assoc_network
->tim
.tim_period
;
2182 #endif /*IWL_MAC80211_DISABLE */
2183 skip
= range
[mode
].no_dtim
;
2192 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2194 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
2195 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
2196 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2199 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
2200 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
2201 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
2204 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
2205 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
2206 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
2207 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2208 le32_to_cpu(cmd
->sleep_interval
[0]),
2209 le32_to_cpu(cmd
->sleep_interval
[1]),
2210 le32_to_cpu(cmd
->sleep_interval
[2]),
2211 le32_to_cpu(cmd
->sleep_interval
[3]),
2212 le32_to_cpu(cmd
->sleep_interval
[4]));
2217 static int iwl_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
2219 u32 final_mode
= mode
;
2221 struct iwl_powertable_cmd cmd
;
2223 /* If on battery, set to 3,
2224 * if plugged into AC power, set to CAM ("continuously aware mode"),
2225 * else user level */
2227 case IWL_POWER_BATTERY
:
2228 final_mode
= IWL_POWER_INDEX_3
;
2231 final_mode
= IWL_POWER_MODE_CAM
;
2238 cmd
.keep_alive_beacons
= 0;
2240 iwl_update_power_cmd(priv
, &cmd
, final_mode
);
2242 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
2244 if (final_mode
== IWL_POWER_MODE_CAM
)
2245 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
2247 set_bit(STATUS_POWER_PMI
, &priv
->status
);
2252 int iwl_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2254 /* Filter incoming packets to determine if they are targeted toward
2255 * this network, discarding packets coming from ourselves */
2256 switch (priv
->iw_mode
) {
2257 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
2258 /* packets from our adapter are dropped (echo) */
2259 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
2261 /* {broad,multi}cast packets to our IBSS go through */
2262 if (is_multicast_ether_addr(header
->addr1
))
2263 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
2264 /* packets to our adapter go through */
2265 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2266 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
2267 /* packets from our adapter are dropped (echo) */
2268 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
2270 /* {broad,multi}cast packets to our BSS go through */
2271 if (is_multicast_ether_addr(header
->addr1
))
2272 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
2273 /* packets to our adapter go through */
2274 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2280 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2282 const char *iwl_get_tx_fail_reason(u32 status
)
2284 switch (status
& TX_STATUS_MSK
) {
2285 case TX_STATUS_SUCCESS
:
2287 TX_STATUS_ENTRY(SHORT_LIMIT
);
2288 TX_STATUS_ENTRY(LONG_LIMIT
);
2289 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
2290 TX_STATUS_ENTRY(MGMNT_ABORT
);
2291 TX_STATUS_ENTRY(NEXT_FRAG
);
2292 TX_STATUS_ENTRY(LIFE_EXPIRE
);
2293 TX_STATUS_ENTRY(DEST_PS
);
2294 TX_STATUS_ENTRY(ABORTED
);
2295 TX_STATUS_ENTRY(BT_RETRY
);
2296 TX_STATUS_ENTRY(STA_INVALID
);
2297 TX_STATUS_ENTRY(FRAG_DROPPED
);
2298 TX_STATUS_ENTRY(TID_DISABLE
);
2299 TX_STATUS_ENTRY(FRAME_FLUSHED
);
2300 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
2301 TX_STATUS_ENTRY(TX_LOCKED
);
2302 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
2309 * iwl_scan_cancel - Cancel any currently executing HW scan
2311 * NOTE: priv->mutex is not required before calling this function
2313 static int iwl_scan_cancel(struct iwl_priv
*priv
)
2315 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2316 clear_bit(STATUS_SCANNING
, &priv
->status
);
2320 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2321 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2322 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2323 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
2324 queue_work(priv
->workqueue
, &priv
->abort_scan
);
2327 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2329 return test_bit(STATUS_SCANNING
, &priv
->status
);
2336 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2337 * @ms: amount of time to wait (in milliseconds) for scan to abort
2339 * NOTE: priv->mutex must be held before calling this function
2341 static int iwl_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
2343 unsigned long now
= jiffies
;
2346 ret
= iwl_scan_cancel(priv
);
2348 mutex_unlock(&priv
->mutex
);
2349 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
2350 test_bit(STATUS_SCANNING
, &priv
->status
))
2352 mutex_lock(&priv
->mutex
);
2354 return test_bit(STATUS_SCANNING
, &priv
->status
);
2360 static void iwl_sequence_reset(struct iwl_priv
*priv
)
2362 /* Reset ieee stats */
2364 /* We don't reset the net_device_stats (ieee->stats) on
2367 priv
->last_seq_num
= -1;
2368 priv
->last_frag_num
= -1;
2369 priv
->last_packet_time
= 0;
2371 iwl_scan_cancel(priv
);
2374 #define MAX_UCODE_BEACON_INTERVAL 4096
2375 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2377 static __le16
iwl_adjust_beacon_interval(u16 beacon_val
)
2380 u16 beacon_factor
= 0;
2383 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
2384 / MAX_UCODE_BEACON_INTERVAL
;
2385 new_val
= beacon_val
/ beacon_factor
;
2387 return cpu_to_le16(new_val
);
2390 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
2392 u64 interval_tm_unit
;
2394 unsigned long flags
;
2395 struct ieee80211_conf
*conf
= NULL
;
2398 conf
= ieee80211_get_hw_conf(priv
->hw
);
2400 spin_lock_irqsave(&priv
->lock
, flags
);
2401 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp1
);
2402 priv
->rxon_timing
.timestamp
.dw
[0] = cpu_to_le32(priv
->timestamp0
);
2404 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
2406 tsf
= priv
->timestamp1
;
2407 tsf
= ((tsf
<< 32) | priv
->timestamp0
);
2409 beacon_int
= priv
->beacon_int
;
2410 spin_unlock_irqrestore(&priv
->lock
, flags
);
2412 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
2413 if (beacon_int
== 0) {
2414 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
2415 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
2417 priv
->rxon_timing
.beacon_interval
=
2418 cpu_to_le16(beacon_int
);
2419 priv
->rxon_timing
.beacon_interval
=
2420 iwl_adjust_beacon_interval(
2421 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2424 priv
->rxon_timing
.atim_window
= 0;
2426 priv
->rxon_timing
.beacon_interval
=
2427 iwl_adjust_beacon_interval(conf
->beacon_int
);
2428 /* TODO: we need to get atim_window from upper stack
2429 * for now we set to 0 */
2430 priv
->rxon_timing
.atim_window
= 0;
2434 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
2435 result
= do_div(tsf
, interval_tm_unit
);
2436 priv
->rxon_timing
.beacon_init_val
=
2437 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
2440 ("beacon interval %d beacon timer %d beacon tim %d\n",
2441 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
2442 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
2443 le16_to_cpu(priv
->rxon_timing
.atim_window
));
2446 static int iwl_scan_initiate(struct iwl_priv
*priv
)
2448 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
2449 IWL_ERROR("APs don't scan.\n");
2453 if (!iwl_is_ready_rf(priv
)) {
2454 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2458 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2459 IWL_DEBUG_SCAN("Scan already in progress.\n");
2463 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2464 IWL_DEBUG_SCAN("Scan request while abort pending. "
2469 IWL_DEBUG_INFO("Starting scan...\n");
2470 priv
->scan_bands
= 2;
2471 set_bit(STATUS_SCANNING
, &priv
->status
);
2472 priv
->scan_start
= jiffies
;
2473 priv
->scan_pass_start
= priv
->scan_start
;
2475 queue_work(priv
->workqueue
, &priv
->request_scan
);
2480 static int iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
2482 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
2485 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
2487 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
2492 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
)
2494 if (phymode
== MODE_IEEE80211A
) {
2495 priv
->staging_rxon
.flags
&=
2496 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
2497 | RXON_FLG_CCK_MSK
);
2498 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2500 /* Copied from iwl_bg_post_associate() */
2501 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2502 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2504 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2506 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
2507 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2509 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
2510 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
2511 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
2516 * initialize rxon structure with default values from eeprom
2518 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
)
2520 const struct iwl_channel_info
*ch_info
;
2522 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2524 switch (priv
->iw_mode
) {
2525 case IEEE80211_IF_TYPE_AP
:
2526 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2529 case IEEE80211_IF_TYPE_STA
:
2530 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2531 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2534 case IEEE80211_IF_TYPE_IBSS
:
2535 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2536 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2537 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2538 RXON_FILTER_ACCEPT_GRP_MSK
;
2541 case IEEE80211_IF_TYPE_MNTR
:
2542 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2543 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2544 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2549 /* TODO: Figure out when short_preamble would be set and cache from
2551 if (!hw_to_local(priv
->hw
)->short_preamble
)
2552 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2554 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2557 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
,
2558 le16_to_cpu(priv
->staging_rxon
.channel
));
2561 ch_info
= &priv
->channel_info
[0];
2564 * in some case A channels are all non IBSS
2565 * in this case force B/G channel
2567 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2568 !(is_channel_ibss(ch_info
)))
2569 ch_info
= &priv
->channel_info
[0];
2571 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2572 if (is_channel_a_band(ch_info
))
2573 priv
->phymode
= MODE_IEEE80211A
;
2575 priv
->phymode
= MODE_IEEE80211G
;
2577 iwl_set_flags_for_phymode(priv
, priv
->phymode
);
2579 priv
->staging_rxon
.ofdm_basic_rates
=
2580 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2581 priv
->staging_rxon
.cck_basic_rates
=
2582 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2584 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
2585 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
2586 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2587 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
2588 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
2589 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
2590 iwl4965_set_rxon_chain(priv
);
2593 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
2595 if (!iwl_is_ready_rf(priv
))
2598 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2599 const struct iwl_channel_info
*ch_info
;
2601 ch_info
= iwl_get_channel_info(priv
,
2603 le16_to_cpu(priv
->staging_rxon
.channel
));
2605 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2606 IWL_ERROR("channel %d not IBSS channel\n",
2607 le16_to_cpu(priv
->staging_rxon
.channel
));
2612 cancel_delayed_work(&priv
->scan_check
);
2613 if (iwl_scan_cancel_timeout(priv
, 100)) {
2614 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2615 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2619 priv
->iw_mode
= mode
;
2621 iwl_connection_init_rx_config(priv
);
2622 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2624 iwl_clear_stations_table(priv
);
2626 iwl_commit_rxon(priv
);
2631 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2632 struct ieee80211_tx_control
*ctl
,
2633 struct iwl_cmd
*cmd
,
2634 struct sk_buff
*skb_frag
,
2637 struct iwl_hw_key
*keyinfo
= &priv
->stations
[ctl
->key_idx
].keyinfo
;
2639 switch (keyinfo
->alg
) {
2641 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2642 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2643 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2648 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2651 memcpy(cmd
->cmd
.tx
.tkip_mic
.byte
, skb_frag
->tail
- 8,
2654 memset(cmd
->cmd
.tx
.tkip_mic
.byte
, 0, 8);
2659 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2660 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2662 if (keyinfo
->keylen
== 13)
2663 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2665 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2667 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2668 "with key %d\n", ctl
->key_idx
);
2672 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2678 * handle build REPLY_TX command notification.
2680 static void iwl_build_tx_cmd_basic(struct iwl_priv
*priv
,
2681 struct iwl_cmd
*cmd
,
2682 struct ieee80211_tx_control
*ctrl
,
2683 struct ieee80211_hdr
*hdr
,
2684 int is_unicast
, u8 std_id
)
2687 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2688 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2690 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2691 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2692 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2693 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2694 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2695 if (ieee80211_is_probe_response(fc
) &&
2696 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2697 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2699 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2700 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2703 cmd
->cmd
.tx
.sta_id
= std_id
;
2704 if (ieee80211_get_morefrag(hdr
))
2705 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2707 qc
= ieee80211_get_qos_ctrl(hdr
);
2709 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2710 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2712 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2714 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2715 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2716 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2717 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2718 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2719 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2722 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2723 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2725 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2726 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2727 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2728 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2729 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(3);
2731 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(2);
2733 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2735 cmd
->cmd
.tx
.driver_txop
= 0;
2736 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2737 cmd
->cmd
.tx
.next_frame_len
= 0;
2740 static int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2743 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2744 DECLARE_MAC_BUF(mac
);
2746 /* If this frame is broadcast or not data then use the broadcast
2748 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2749 is_multicast_ether_addr(hdr
->addr1
))
2750 return priv
->hw_setting
.bcast_sta_id
;
2752 switch (priv
->iw_mode
) {
2754 /* If this frame is part of a BSS network (we're a station), then
2755 * we use the AP's station id */
2756 case IEEE80211_IF_TYPE_STA
:
2759 /* If we are an AP, then find the station, or use BCAST */
2760 case IEEE80211_IF_TYPE_AP
:
2761 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2762 if (sta_id
!= IWL_INVALID_STATION
)
2764 return priv
->hw_setting
.bcast_sta_id
;
2766 /* If this frame is part of a IBSS network, then we use the
2767 * target specific station id */
2768 case IEEE80211_IF_TYPE_IBSS
:
2769 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2770 if (sta_id
!= IWL_INVALID_STATION
)
2773 sta_id
= iwl_add_station(priv
, hdr
->addr1
, 0, CMD_ASYNC
);
2775 if (sta_id
!= IWL_INVALID_STATION
)
2778 IWL_DEBUG_DROP("Station %s not in station map. "
2779 "Defaulting to broadcast...\n",
2780 print_mac(mac
, hdr
->addr1
));
2781 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2782 return priv
->hw_setting
.bcast_sta_id
;
2785 IWL_WARNING("Unknown mode of operation: %d", priv
->iw_mode
);
2786 return priv
->hw_setting
.bcast_sta_id
;
2791 * start REPLY_TX command process
2793 static int iwl_tx_skb(struct iwl_priv
*priv
,
2794 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2796 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2797 struct iwl_tfd_frame
*tfd
;
2799 int txq_id
= ctl
->queue
;
2800 struct iwl_tx_queue
*txq
= NULL
;
2801 struct iwl_queue
*q
= NULL
;
2802 dma_addr_t phys_addr
;
2803 dma_addr_t txcmd_phys
;
2804 struct iwl_cmd
*out_cmd
= NULL
;
2805 u16 len
, idx
, len_org
;
2806 u8 id
, hdr_len
, unicast
;
2811 u8 wait_write_ptr
= 0;
2812 unsigned long flags
;
2815 spin_lock_irqsave(&priv
->lock
, flags
);
2816 if (iwl_is_rfkill(priv
)) {
2817 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2821 if (!priv
->interface_id
) {
2822 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2826 if ((ctl
->tx_rate
& 0xFF) == IWL_INVALID_RATE
) {
2827 IWL_ERROR("ERROR: No TX rate available.\n");
2831 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2834 fc
= le16_to_cpu(hdr
->frame_control
);
2836 #ifdef CONFIG_IWLWIFI_DEBUG
2837 if (ieee80211_is_auth(fc
))
2838 IWL_DEBUG_TX("Sending AUTH frame\n");
2839 else if (ieee80211_is_assoc_request(fc
))
2840 IWL_DEBUG_TX("Sending ASSOC frame\n");
2841 else if (ieee80211_is_reassoc_request(fc
))
2842 IWL_DEBUG_TX("Sending REASSOC frame\n");
2845 if (!iwl_is_associated(priv
) &&
2846 ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
)) {
2847 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2851 spin_unlock_irqrestore(&priv
->lock
, flags
);
2853 hdr_len
= ieee80211_get_hdrlen(fc
);
2854 sta_id
= iwl_get_sta_id(priv
, hdr
);
2855 if (sta_id
== IWL_INVALID_STATION
) {
2856 DECLARE_MAC_BUF(mac
);
2858 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2859 print_mac(mac
, hdr
->addr1
));
2863 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2865 qc
= ieee80211_get_qos_ctrl(hdr
);
2867 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2868 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2870 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2872 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2874 #ifdef CONFIG_IWLWIFI_HT
2875 #ifdef CONFIG_IWLWIFI_HT_AGG
2876 /* aggregation is on for this <sta,tid> */
2877 if (ctl
->flags
& IEEE80211_TXCTL_HT_MPDU_AGG
)
2878 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2879 #endif /* CONFIG_IWLWIFI_HT_AGG */
2880 #endif /* CONFIG_IWLWIFI_HT */
2882 txq
= &priv
->txq
[txq_id
];
2885 spin_lock_irqsave(&priv
->lock
, flags
);
2887 tfd
= &txq
->bd
[q
->write_ptr
];
2888 memset(tfd
, 0, sizeof(*tfd
));
2889 control_flags
= (u32
*) tfd
;
2890 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
2892 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl_tx_info
));
2893 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
2894 memcpy(&(txq
->txb
[q
->write_ptr
].status
.control
),
2895 ctl
, sizeof(struct ieee80211_tx_control
));
2896 out_cmd
= &txq
->cmd
[idx
];
2897 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2898 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2899 out_cmd
->hdr
.cmd
= REPLY_TX
;
2900 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2901 INDEX_TO_SEQ(q
->write_ptr
)));
2902 /* copy frags header */
2903 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2905 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2906 len
= priv
->hw_setting
.tx_cmd_len
+
2907 sizeof(struct iwl_cmd_header
) + hdr_len
;
2910 len
= (len
+ 3) & ~3;
2917 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2918 offsetof(struct iwl_cmd
, hdr
);
2920 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2922 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2923 iwl_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, 0);
2925 /* 802.11 null functions have no payload... */
2926 len
= skb
->len
- hdr_len
;
2928 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2929 len
, PCI_DMA_TODEVICE
);
2930 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2934 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2936 len
= (u16
)skb
->len
;
2937 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2939 /* TODO need this for burst mode later on */
2940 iwl_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2942 /* set is_hcca to 0; it probably will never be implemented */
2943 iwl_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2945 iwl4965_tx_cmd(priv
, out_cmd
, sta_id
, txcmd_phys
,
2946 hdr
, hdr_len
, ctl
, NULL
);
2948 if (!ieee80211_get_morefrag(hdr
)) {
2949 txq
->need_update
= 1;
2951 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2952 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2956 txq
->need_update
= 0;
2959 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2960 sizeof(out_cmd
->cmd
.tx
));
2962 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2963 ieee80211_get_hdrlen(fc
));
2965 iwl4965_tx_queue_update_wr_ptr(priv
, txq
, len
);
2967 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
2968 rc
= iwl_tx_queue_update_write_ptr(priv
, txq
);
2969 spin_unlock_irqrestore(&priv
->lock
, flags
);
2974 if ((iwl_queue_space(q
) < q
->high_mark
)
2975 && priv
->mac80211_registered
) {
2976 if (wait_write_ptr
) {
2977 spin_lock_irqsave(&priv
->lock
, flags
);
2978 txq
->need_update
= 1;
2979 iwl_tx_queue_update_write_ptr(priv
, txq
);
2980 spin_unlock_irqrestore(&priv
->lock
, flags
);
2983 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2989 spin_unlock_irqrestore(&priv
->lock
, flags
);
2994 static void iwl_set_rate(struct iwl_priv
*priv
)
2996 const struct ieee80211_hw_mode
*hw
= NULL
;
2997 struct ieee80211_rate
*rate
;
3000 hw
= iwl_get_hw_mode(priv
, priv
->phymode
);
3002 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3006 priv
->active_rate
= 0;
3007 priv
->active_rate_basic
= 0;
3009 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3010 hw
->mode
== MODE_IEEE80211A
?
3011 'a' : ((hw
->mode
== MODE_IEEE80211B
) ? 'b' : 'g'));
3013 for (i
= 0; i
< hw
->num_rates
; i
++) {
3014 rate
= &(hw
->rates
[i
]);
3015 if ((rate
->val
< IWL_RATE_COUNT
) &&
3016 (rate
->flags
& IEEE80211_RATE_SUPPORTED
)) {
3017 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3018 rate
->val
, iwl_rates
[rate
->val
].plcp
,
3019 (rate
->flags
& IEEE80211_RATE_BASIC
) ?
3021 priv
->active_rate
|= (1 << rate
->val
);
3022 if (rate
->flags
& IEEE80211_RATE_BASIC
)
3023 priv
->active_rate_basic
|= (1 << rate
->val
);
3025 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3026 rate
->val
, iwl_rates
[rate
->val
].plcp
);
3029 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3030 priv
->active_rate
, priv
->active_rate_basic
);
3033 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3034 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3037 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
3038 priv
->staging_rxon
.cck_basic_rates
=
3039 ((priv
->active_rate_basic
&
3040 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
3042 priv
->staging_rxon
.cck_basic_rates
=
3043 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
3045 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
3046 priv
->staging_rxon
.ofdm_basic_rates
=
3047 ((priv
->active_rate_basic
&
3048 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
3049 IWL_FIRST_OFDM_RATE
) & 0xFF;
3051 priv
->staging_rxon
.ofdm_basic_rates
=
3052 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
3055 static void iwl_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
3057 unsigned long flags
;
3059 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
3062 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3063 disable_radio
? "OFF" : "ON");
3065 if (disable_radio
) {
3066 iwl_scan_cancel(priv
);
3067 /* FIXME: This is a workaround for AP */
3068 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
3069 spin_lock_irqsave(&priv
->lock
, flags
);
3070 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3071 CSR_UCODE_SW_BIT_RFKILL
);
3072 spin_unlock_irqrestore(&priv
->lock
, flags
);
3073 iwl_send_card_state(priv
, CARD_STATE_CMD_DISABLE
, 0);
3074 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3079 spin_lock_irqsave(&priv
->lock
, flags
);
3080 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
3082 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3083 spin_unlock_irqrestore(&priv
->lock
, flags
);
3088 spin_lock_irqsave(&priv
->lock
, flags
);
3089 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3090 if (!iwl_grab_restricted_access(priv
))
3091 iwl_release_restricted_access(priv
);
3092 spin_unlock_irqrestore(&priv
->lock
, flags
);
3094 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
3095 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3096 "disabled by HW switch\n");
3100 queue_work(priv
->workqueue
, &priv
->restart
);
3104 void iwl_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
3105 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
3108 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
3110 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
3113 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
3116 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
3117 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3118 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3119 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3120 RX_RES_STATUS_BAD_ICV_MIC
)
3121 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
3122 case RX_RES_STATUS_SEC_TYPE_WEP
:
3123 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3124 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3125 RX_RES_STATUS_DECRYPT_OK
) {
3126 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3127 stats
->flag
|= RX_FLAG_DECRYPTED
;
3136 void iwl_handle_data_packet_monitor(struct iwl_priv
*priv
,
3137 struct iwl_rx_mem_buffer
*rxb
,
3138 void *data
, short len
,
3139 struct ieee80211_rx_status
*stats
,
3142 struct iwl_rt_rx_hdr
*iwl_rt
;
3144 /* First cache any information we need before we overwrite
3145 * the information provided in the skb from the hardware */
3146 s8 signal
= stats
->ssi
;
3148 int rate
= stats
->rate
;
3149 u64 tsf
= stats
->mactime
;
3150 __le16 phy_flags_hw
= cpu_to_le16(phy_flags
);
3152 /* We received data from the HW, so stop the watchdog */
3153 if (len
> IWL_RX_BUF_SIZE
- sizeof(*iwl_rt
)) {
3154 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3158 /* copy the frame data to write after where the radiotap header goes */
3159 iwl_rt
= (void *)rxb
->skb
->data
;
3160 memmove(iwl_rt
->payload
, data
, len
);
3162 iwl_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3163 iwl_rt
->rt_hdr
.it_pad
= 0; /* always good to zero */
3165 /* total header + data */
3166 iwl_rt
->rt_hdr
.it_len
= cpu_to_le16(sizeof(*iwl_rt
));
3168 /* Set the size of the skb to the size of the frame */
3169 skb_put(rxb
->skb
, sizeof(*iwl_rt
) + len
);
3171 /* Big bitfield of all the fields we provide in radiotap */
3172 iwl_rt
->rt_hdr
.it_present
=
3173 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3174 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3175 (1 << IEEE80211_RADIOTAP_RATE
) |
3176 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3177 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3178 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3179 (1 << IEEE80211_RADIOTAP_ANTENNA
));
3181 /* Zero the flags, we'll add to them as we go */
3182 iwl_rt
->rt_flags
= 0;
3184 iwl_rt
->rt_tsf
= cpu_to_le64(tsf
);
3186 /* Convert to dBm */
3187 iwl_rt
->rt_dbmsignal
= signal
;
3188 iwl_rt
->rt_dbmnoise
= noise
;
3190 /* Convert the channel frequency and set the flags */
3191 iwl_rt
->rt_channelMHz
= cpu_to_le16(stats
->freq
);
3192 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3193 iwl_rt
->rt_chbitmask
=
3194 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_5GHZ
));
3195 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3196 iwl_rt
->rt_chbitmask
=
3197 cpu_to_le16((IEEE80211_CHAN_CCK
| IEEE80211_CHAN_2GHZ
));
3199 iwl_rt
->rt_chbitmask
=
3200 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_2GHZ
));
3202 rate
= iwl_rate_index_from_plcp(rate
);
3204 iwl_rt
->rt_rate
= 0;
3206 iwl_rt
->rt_rate
= iwl_rates
[rate
].ieee
;
3208 /* antenna number */
3209 iwl_rt
->rt_antenna
=
3210 le16_to_cpu(phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
3212 /* set the preamble flag if we have it */
3213 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3214 iwl_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3216 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb
->skb
->len
);
3218 stats
->flag
|= RX_FLAG_RADIOTAP
;
3219 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3224 #define IWL_PACKET_RETRY_TIME HZ
3226 int is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
3228 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
3229 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
3230 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
3231 u16
*last_seq
, *last_frag
;
3232 unsigned long *last_time
;
3234 switch (priv
->iw_mode
) {
3235 case IEEE80211_IF_TYPE_IBSS
:{
3236 struct list_head
*p
;
3237 struct iwl_ibss_seq
*entry
= NULL
;
3238 u8
*mac
= header
->addr2
;
3239 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
3241 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
3242 entry
= list_entry(p
, struct iwl_ibss_seq
, list
);
3243 if (!compare_ether_addr(entry
->mac
, mac
))
3246 if (p
== &priv
->ibss_mac_hash
[index
]) {
3247 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
3249 IWL_ERROR("Cannot malloc new mac entry\n");
3252 memcpy(entry
->mac
, mac
, ETH_ALEN
);
3253 entry
->seq_num
= seq
;
3254 entry
->frag_num
= frag
;
3255 entry
->packet_time
= jiffies
;
3256 list_add(&entry
->list
, &priv
->ibss_mac_hash
[index
]);
3259 last_seq
= &entry
->seq_num
;
3260 last_frag
= &entry
->frag_num
;
3261 last_time
= &entry
->packet_time
;
3264 case IEEE80211_IF_TYPE_STA
:
3265 last_seq
= &priv
->last_seq_num
;
3266 last_frag
= &priv
->last_frag_num
;
3267 last_time
= &priv
->last_packet_time
;
3272 if ((*last_seq
== seq
) &&
3273 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
3274 if (*last_frag
== frag
)
3276 if (*last_frag
+ 1 != frag
)
3277 /* out-of-order fragment */
3283 *last_time
= jiffies
;
3290 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3292 #include "iwl-spectrum.h"
3294 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3295 #define BEACON_TIME_MASK_HIGH 0xFF000000
3296 #define TIME_UNIT 1024
3299 * extended beacon time format
3300 * time in usec will be changed into a 32-bit value in 8:24 format
3301 * the high 1 byte is the beacon counts
3302 * the lower 3 bytes is the time in usec within one beacon interval
3305 static u32
iwl_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
3309 u32 interval
= beacon_interval
* 1024;
3311 if (!interval
|| !usec
)
3314 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
3315 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
3317 return (quot
<< 24) + rem
;
3320 /* base is usually what we get from ucode with each received frame,
3321 * the same as HW timer counter counting down
3324 static __le32
iwl_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
3326 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
3327 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
3328 u32 interval
= beacon_interval
* TIME_UNIT
;
3329 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
3330 (addon
& BEACON_TIME_MASK_HIGH
);
3332 if (base_low
> addon_low
)
3333 res
+= base_low
- addon_low
;
3334 else if (base_low
< addon_low
) {
3335 res
+= interval
+ base_low
- addon_low
;
3340 return cpu_to_le32(res
);
3343 static int iwl_get_measurement(struct iwl_priv
*priv
,
3344 struct ieee80211_measurement_params
*params
,
3347 struct iwl_spectrum_cmd spectrum
;
3348 struct iwl_rx_packet
*res
;
3349 struct iwl_host_cmd cmd
= {
3350 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
3351 .data
= (void *)&spectrum
,
3352 .meta
.flags
= CMD_WANT_SKB
,
3354 u32 add_time
= le64_to_cpu(params
->start_time
);
3356 int spectrum_resp_status
;
3357 int duration
= le16_to_cpu(params
->duration
);
3359 if (iwl_is_associated(priv
))
3361 iwl_usecs_to_beacons(
3362 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
3363 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3365 memset(&spectrum
, 0, sizeof(spectrum
));
3367 spectrum
.channel_count
= cpu_to_le16(1);
3369 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
3370 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
3371 cmd
.len
= sizeof(spectrum
);
3372 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
3374 if (iwl_is_associated(priv
))
3375 spectrum
.start_time
=
3376 iwl_add_beacon_time(priv
->last_beacon_time
,
3378 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3380 spectrum
.start_time
= 0;
3382 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
3383 spectrum
.channels
[0].channel
= params
->channel
;
3384 spectrum
.channels
[0].type
= type
;
3385 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
3386 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
3387 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
3389 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3393 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
3394 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
3395 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3399 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
3400 switch (spectrum_resp_status
) {
3401 case 0: /* Command will be handled */
3402 if (res
->u
.spectrum
.id
!= 0xff) {
3404 ("Replaced existing measurement: %d\n",
3405 res
->u
.spectrum
.id
);
3406 priv
->measurement_status
&= ~MEASUREMENT_READY
;
3408 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
3412 case 1: /* Command will not be handled */
3417 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
3423 static void iwl_txstatus_to_ieee(struct iwl_priv
*priv
,
3424 struct iwl_tx_info
*tx_sta
)
3427 tx_sta
->status
.ack_signal
= 0;
3428 tx_sta
->status
.excessive_retries
= 0;
3429 tx_sta
->status
.queue_length
= 0;
3430 tx_sta
->status
.queue_number
= 0;
3433 ieee80211_tx_status_irqsafe(priv
->hw
,
3434 tx_sta
->skb
[0], &(tx_sta
->status
));
3436 ieee80211_tx_status(priv
->hw
,
3437 tx_sta
->skb
[0], &(tx_sta
->status
));
3439 tx_sta
->skb
[0] = NULL
;
3443 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3445 * When FW advances 'R' index, all entries between old and
3446 * new 'R' index need to be reclaimed. As result, some free space
3447 * forms. If there is enough free space (> low mark), wake Tx queue.
3449 int iwl_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
3451 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3452 struct iwl_queue
*q
= &txq
->q
;
3455 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
3456 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3457 "is out of range [0-%d] %d %d.\n", txq_id
,
3458 index
, q
->n_bd
, q
->write_ptr
, q
->read_ptr
);
3462 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
3463 q
->read_ptr
!= index
;
3464 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
3465 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
3466 iwl_txstatus_to_ieee(priv
,
3467 &(txq
->txb
[txq
->q
.read_ptr
]));
3468 iwl_hw_txq_free_tfd(priv
, txq
);
3469 } else if (nfreed
> 1) {
3470 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
3471 q
->write_ptr
, q
->read_ptr
);
3472 queue_work(priv
->workqueue
, &priv
->restart
);
3477 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
3478 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
3479 priv
->mac80211_registered
)
3480 ieee80211_wake_queue(priv
->hw
, txq_id
);
3486 static int iwl_is_tx_success(u32 status
)
3488 status
&= TX_STATUS_MSK
;
3489 return (status
== TX_STATUS_SUCCESS
)
3490 || (status
== TX_STATUS_DIRECT_DONE
);
3493 /******************************************************************************
3495 * Generic RX handler implementations
3497 ******************************************************************************/
3498 #ifdef CONFIG_IWLWIFI_HT
3499 #ifdef CONFIG_IWLWIFI_HT_AGG
3501 static inline int iwl_get_ra_sta_id(struct iwl_priv
*priv
,
3502 struct ieee80211_hdr
*hdr
)
3504 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
3507 u8
*da
= ieee80211_get_DA(hdr
);
3508 return iwl_hw_find_station(priv
, da
);
3512 static struct ieee80211_hdr
*iwl_tx_queue_get_hdr(
3513 struct iwl_priv
*priv
, int txq_id
, int idx
)
3515 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
3516 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
3517 txb
[idx
].skb
[0]->data
;
3521 static inline u32
iwl_get_scd_ssn(struct iwl_tx_resp
*tx_resp
)
3523 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
3524 tx_resp
->frame_count
);
3525 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
3528 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
3529 struct iwl_ht_agg
*agg
,
3530 struct iwl_tx_resp
*tx_resp
,
3534 __le32
*frame_status
= &tx_resp
->status
;
3535 struct ieee80211_tx_status
*tx_status
= NULL
;
3536 struct ieee80211_hdr
*hdr
= NULL
;
3541 if (agg
->wait_for_ba
)
3542 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3544 agg
->frame_count
= tx_resp
->frame_count
;
3545 agg
->start_idx
= start_idx
;
3546 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3547 agg
->bitmap0
= agg
->bitmap1
= 0;
3549 if (agg
->frame_count
== 1) {
3550 struct iwl_tx_queue
*txq
;
3551 status
= le32_to_cpu(frame_status
[0]);
3553 txq_id
= agg
->txq_id
;
3554 txq
= &priv
->txq
[txq_id
];
3555 /* FIXME: code repetition */
3556 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3557 agg
->frame_count
, agg
->start_idx
);
3559 tx_status
= &(priv
->txq
[txq_id
].txb
[txq
->q
.read_ptr
].status
);
3560 tx_status
->retry_count
= tx_resp
->failure_frame
;
3561 tx_status
->queue_number
= status
& 0xff;
3562 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3563 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3565 tx_status
->flags
= iwl_is_tx_success(status
)?
3566 IEEE80211_TX_STATUS_ACK
: 0;
3567 tx_status
->control
.tx_rate
=
3568 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3569 /* FIXME: code repetition end */
3571 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3572 status
& 0xff, tx_resp
->failure_frame
);
3573 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3574 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
3576 agg
->wait_for_ba
= 0;
3579 int start
= agg
->start_idx
;
3581 for (i
= 0; i
< agg
->frame_count
; i
++) {
3583 status
= le32_to_cpu(frame_status
[i
]);
3585 idx
= SEQ_TO_INDEX(seq
);
3586 txq_id
= SEQ_TO_QUEUE(seq
);
3588 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
3589 AGG_TX_STATE_ABORT_MSK
))
3592 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3593 agg
->frame_count
, txq_id
, idx
);
3595 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
3597 sc
= le16_to_cpu(hdr
->seq_ctrl
);
3598 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
3599 IWL_ERROR("BUG_ON idx doesn't match seq control"
3600 " idx=%d, seq_idx=%d, seq=%d\n",
3606 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3607 i
, idx
, SEQ_TO_SN(sc
));
3611 sh
= (start
- idx
) + 0xff;
3612 bitmap
= bitmap
<< sh
;
3615 } else if (sh
< -64)
3616 sh
= 0xff - (start
- idx
);
3620 bitmap
= bitmap
<< sh
;
3623 bitmap
|= (1 << sh
);
3624 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3625 start
, (u32
)(bitmap
& 0xFFFFFFFF));
3628 agg
->bitmap0
= bitmap
& 0xFFFFFFFF;
3629 agg
->bitmap1
= bitmap
>> 32;
3630 agg
->start_idx
= start
;
3631 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3632 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3633 agg
->frame_count
, agg
->start_idx
,
3637 agg
->wait_for_ba
= 1;
3644 static void iwl_rx_reply_tx(struct iwl_priv
*priv
,
3645 struct iwl_rx_mem_buffer
*rxb
)
3647 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3648 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3649 int txq_id
= SEQ_TO_QUEUE(sequence
);
3650 int index
= SEQ_TO_INDEX(sequence
);
3651 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3652 struct ieee80211_tx_status
*tx_status
;
3653 struct iwl_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3654 u32 status
= le32_to_cpu(tx_resp
->status
);
3655 #ifdef CONFIG_IWLWIFI_HT
3656 #ifdef CONFIG_IWLWIFI_HT_AGG
3661 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3662 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3663 "is out of range [0-%d] %d %d\n", txq_id
,
3664 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
3669 #ifdef CONFIG_IWLWIFI_HT
3670 #ifdef CONFIG_IWLWIFI_HT_AGG
3671 if (txq
->sched_retry
) {
3672 const u32 scd_ssn
= iwl_get_scd_ssn(tx_resp
);
3673 struct ieee80211_hdr
*hdr
=
3674 iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
3675 struct iwl_ht_agg
*agg
= NULL
;
3676 __le16
*qc
= ieee80211_get_qos_ctrl(hdr
);
3679 IWL_ERROR("BUG_ON qc is null!!!!\n");
3683 tid
= le16_to_cpu(*qc
) & 0xf;
3685 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
3686 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
3687 IWL_ERROR("Station not known for\n");
3691 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
3693 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, index
);
3695 if ((tx_resp
->frame_count
== 1) &&
3696 !iwl_is_tx_success(status
)) {
3697 /* TODO: send BAR */
3700 if ((txq
->q
.read_ptr
!= (scd_ssn
& 0xff))) {
3701 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
3702 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3703 "%d index %d\n", scd_ssn
, index
);
3704 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3707 #endif /* CONFIG_IWLWIFI_HT_AGG */
3708 #endif /* CONFIG_IWLWIFI_HT */
3709 tx_status
= &(txq
->txb
[txq
->q
.read_ptr
].status
);
3711 tx_status
->retry_count
= tx_resp
->failure_frame
;
3712 tx_status
->queue_number
= status
;
3713 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3714 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3717 iwl_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3719 tx_status
->control
.tx_rate
=
3720 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3722 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3723 "retries %d\n", txq_id
, iwl_get_tx_fail_reason(status
),
3724 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
3725 tx_resp
->failure_frame
);
3727 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3729 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3730 #ifdef CONFIG_IWLWIFI_HT
3731 #ifdef CONFIG_IWLWIFI_HT_AGG
3733 #endif /* CONFIG_IWLWIFI_HT_AGG */
3734 #endif /* CONFIG_IWLWIFI_HT */
3736 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3737 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3741 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
3742 struct iwl_rx_mem_buffer
*rxb
)
3744 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3745 struct iwl_alive_resp
*palive
;
3746 struct delayed_work
*pwork
;
3748 palive
= &pkt
->u
.alive_frame
;
3750 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3752 palive
->is_valid
, palive
->ver_type
,
3753 palive
->ver_subtype
);
3755 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3756 IWL_DEBUG_INFO("Initialization Alive received.\n");
3757 memcpy(&priv
->card_alive_init
,
3758 &pkt
->u
.alive_frame
,
3759 sizeof(struct iwl_init_alive_resp
));
3760 pwork
= &priv
->init_alive_start
;
3762 IWL_DEBUG_INFO("Runtime Alive received.\n");
3763 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3764 sizeof(struct iwl_alive_resp
));
3765 pwork
= &priv
->alive_start
;
3768 /* We delay the ALIVE response by 5ms to
3769 * give the HW RF Kill time to activate... */
3770 if (palive
->is_valid
== UCODE_VALID_OK
)
3771 queue_delayed_work(priv
->workqueue
, pwork
,
3772 msecs_to_jiffies(5));
3774 IWL_WARNING("uCode did not respond OK.\n");
3777 static void iwl_rx_reply_add_sta(struct iwl_priv
*priv
,
3778 struct iwl_rx_mem_buffer
*rxb
)
3780 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3782 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3786 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
3787 struct iwl_rx_mem_buffer
*rxb
)
3789 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3791 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3792 "seq 0x%04X ser 0x%08X\n",
3793 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3794 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3795 pkt
->u
.err_resp
.cmd_id
,
3796 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3797 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3800 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3802 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3804 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3805 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3806 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3807 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3808 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3809 rxon
->channel
= csa
->channel
;
3810 priv
->staging_rxon
.channel
= csa
->channel
;
3813 static void iwl_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3814 struct iwl_rx_mem_buffer
*rxb
)
3816 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3817 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3818 struct iwl_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3820 if (!report
->state
) {
3821 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3822 "Spectrum Measure Notification: Start\n");
3826 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3827 priv
->measurement_status
|= MEASUREMENT_READY
;
3831 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3832 struct iwl_rx_mem_buffer
*rxb
)
3834 #ifdef CONFIG_IWLWIFI_DEBUG
3835 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3836 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3837 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3838 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3842 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3843 struct iwl_rx_mem_buffer
*rxb
)
3845 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3846 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3847 "notification for %s:\n",
3848 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3849 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3852 static void iwl_bg_beacon_update(struct work_struct
*work
)
3854 struct iwl_priv
*priv
=
3855 container_of(work
, struct iwl_priv
, beacon_update
);
3856 struct sk_buff
*beacon
;
3858 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3859 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->interface_id
, NULL
);
3862 IWL_ERROR("update beacon failed\n");
3866 mutex_lock(&priv
->mutex
);
3867 /* new beacon skb is allocated every time; dispose previous.*/
3868 if (priv
->ibss_beacon
)
3869 dev_kfree_skb(priv
->ibss_beacon
);
3871 priv
->ibss_beacon
= beacon
;
3872 mutex_unlock(&priv
->mutex
);
3874 iwl_send_beacon_cmd(priv
);
3877 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
3878 struct iwl_rx_mem_buffer
*rxb
)
3880 #ifdef CONFIG_IWLWIFI_DEBUG
3881 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3882 struct iwl_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3883 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3885 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3886 "tsf %d %d rate %d\n",
3887 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3888 beacon
->beacon_notify_hdr
.failure_frame
,
3889 le32_to_cpu(beacon
->ibss_mgr_status
),
3890 le32_to_cpu(beacon
->high_tsf
),
3891 le32_to_cpu(beacon
->low_tsf
), rate
);
3894 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3895 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3896 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3899 /* Service response to REPLY_SCAN_CMD (0x80) */
3900 static void iwl_rx_reply_scan(struct iwl_priv
*priv
,
3901 struct iwl_rx_mem_buffer
*rxb
)
3903 #ifdef CONFIG_IWLWIFI_DEBUG
3904 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3905 struct iwl_scanreq_notification
*notif
=
3906 (struct iwl_scanreq_notification
*)pkt
->u
.raw
;
3908 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3912 /* Service SCAN_START_NOTIFICATION (0x82) */
3913 static void iwl_rx_scan_start_notif(struct iwl_priv
*priv
,
3914 struct iwl_rx_mem_buffer
*rxb
)
3916 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3917 struct iwl_scanstart_notification
*notif
=
3918 (struct iwl_scanstart_notification
*)pkt
->u
.raw
;
3919 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3920 IWL_DEBUG_SCAN("Scan start: "
3922 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3924 notif
->band
? "bg" : "a",
3926 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3929 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3930 static void iwl_rx_scan_results_notif(struct iwl_priv
*priv
,
3931 struct iwl_rx_mem_buffer
*rxb
)
3933 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3934 struct iwl_scanresults_notification
*notif
=
3935 (struct iwl_scanresults_notification
*)pkt
->u
.raw
;
3937 IWL_DEBUG_SCAN("Scan ch.res: "
3939 "(TSF: 0x%08X:%08X) - %d "
3940 "elapsed=%lu usec (%dms since last)\n",
3942 notif
->band
? "bg" : "a",
3943 le32_to_cpu(notif
->tsf_high
),
3944 le32_to_cpu(notif
->tsf_low
),
3945 le32_to_cpu(notif
->statistics
[0]),
3946 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3947 jiffies_to_msecs(elapsed_jiffies
3948 (priv
->last_scan_jiffies
, jiffies
)));
3950 priv
->last_scan_jiffies
= jiffies
;
3953 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3954 static void iwl_rx_scan_complete_notif(struct iwl_priv
*priv
,
3955 struct iwl_rx_mem_buffer
*rxb
)
3957 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3958 struct iwl_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3960 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3961 scan_notif
->scanned_channels
,
3962 scan_notif
->tsf_low
,
3963 scan_notif
->tsf_high
, scan_notif
->status
);
3965 /* The HW is no longer scanning */
3966 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3968 /* The scan completion notification came in, so kill that timer... */
3969 cancel_delayed_work(&priv
->scan_check
);
3971 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3972 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3973 jiffies_to_msecs(elapsed_jiffies
3974 (priv
->scan_pass_start
, jiffies
)));
3976 /* Remove this scanned band from the list
3977 * of pending bands to scan */
3980 /* If a request to abort was given, or the scan did not succeed
3981 * then we reset the scan state machine and terminate,
3982 * re-queuing another scan if one has been requested */
3983 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3984 IWL_DEBUG_INFO("Aborted scan completed.\n");
3985 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3987 /* If there are more bands on this scan pass reschedule */
3988 if (priv
->scan_bands
> 0)
3992 priv
->last_scan_jiffies
= jiffies
;
3993 IWL_DEBUG_INFO("Setting scan to off\n");
3995 clear_bit(STATUS_SCANNING
, &priv
->status
);
3997 IWL_DEBUG_INFO("Scan took %dms\n",
3998 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
4000 queue_work(priv
->workqueue
, &priv
->scan_completed
);
4005 priv
->scan_pass_start
= jiffies
;
4006 queue_work(priv
->workqueue
, &priv
->request_scan
);
4009 /* Handle notification from uCode that card's power state is changing
4010 * due to software, hardware, or critical temperature RFKILL */
4011 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
4012 struct iwl_rx_mem_buffer
*rxb
)
4014 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4015 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
4016 unsigned long status
= priv
->status
;
4018 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4019 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
4020 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
4022 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
4023 RF_CARD_DISABLED
)) {
4025 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4026 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4028 if (!iwl_grab_restricted_access(priv
)) {
4029 iwl_write_restricted(
4030 priv
, HBUS_TARG_MBX_C
,
4031 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4033 iwl_release_restricted_access(priv
);
4036 if (!(flags
& RXON_CARD_DISABLED
)) {
4037 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
4038 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4039 if (!iwl_grab_restricted_access(priv
)) {
4040 iwl_write_restricted(
4041 priv
, HBUS_TARG_MBX_C
,
4042 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4044 iwl_release_restricted_access(priv
);
4048 if (flags
& RF_CARD_DISABLED
) {
4049 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4050 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
4051 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4052 if (!iwl_grab_restricted_access(priv
))
4053 iwl_release_restricted_access(priv
);
4057 if (flags
& HW_CARD_DISABLED
)
4058 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4060 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4063 if (flags
& SW_CARD_DISABLED
)
4064 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4066 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4068 if (!(flags
& RXON_CARD_DISABLED
))
4069 iwl_scan_cancel(priv
);
4071 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
4072 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
4073 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
4074 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
4075 queue_work(priv
->workqueue
, &priv
->rf_kill
);
4077 wake_up_interruptible(&priv
->wait_command_queue
);
4081 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4083 * Setup the RX handlers for each of the reply types sent from the uCode
4086 * This function chains into the hardware specific files for them to setup
4087 * any hardware specific handlers as well.
4089 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
4091 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
4092 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl_rx_reply_add_sta
;
4093 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
4094 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
4095 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
4096 iwl_rx_spectrum_measure_notif
;
4097 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
4098 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
4099 iwl_rx_pm_debug_statistics_notif
;
4100 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
4102 /* NOTE: iwl_rx_statistics is different based on whether
4103 * the build is for the 3945 or the 4965. See the
4104 * corresponding implementation in iwl-XXXX.c
4106 * The same handler is used for both the REPLY to a
4107 * discrete statistics request from the host as well as
4108 * for the periodic statistics notification from the uCode
4110 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_hw_rx_statistics
;
4111 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_hw_rx_statistics
;
4113 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl_rx_reply_scan
;
4114 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl_rx_scan_start_notif
;
4115 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
4116 iwl_rx_scan_results_notif
;
4117 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
4118 iwl_rx_scan_complete_notif
;
4119 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
4120 priv
->rx_handlers
[REPLY_TX
] = iwl_rx_reply_tx
;
4122 /* Setup hardware specific Rx handlers */
4123 iwl_hw_rx_handler_setup(priv
);
4127 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4128 * @rxb: Rx buffer to reclaim
4130 * If an Rx buffer has an async callback associated with it the callback
4131 * will be executed. The attached skb (if present) will only be freed
4132 * if the callback returns 1
4134 static void iwl_tx_cmd_complete(struct iwl_priv
*priv
,
4135 struct iwl_rx_mem_buffer
*rxb
)
4137 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4138 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
4139 int txq_id
= SEQ_TO_QUEUE(sequence
);
4140 int index
= SEQ_TO_INDEX(sequence
);
4141 int huge
= sequence
& SEQ_HUGE_FRAME
;
4143 struct iwl_cmd
*cmd
;
4145 /* If a Tx command is being handled and it isn't in the actual
4146 * command queue then there a command routing bug has been introduced
4147 * in the queue management code. */
4148 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
4149 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4150 txq_id
, pkt
->hdr
.cmd
);
4151 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
4153 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
4154 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
4156 /* Input error checking is done when commands are added to queue. */
4157 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
4158 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
4160 } else if (cmd
->meta
.u
.callback
&&
4161 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
4164 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
4166 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
4167 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4168 wake_up_interruptible(&priv
->wait_command_queue
);
4172 /************************** RX-FUNCTIONS ****************************/
4174 * Rx theory of operation
4176 * The host allocates 32 DMA target addresses and passes the host address
4177 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4181 * The host/firmware share two index registers for managing the Rx buffers.
4183 * The READ index maps to the first position that the firmware may be writing
4184 * to -- the driver can read up to (but not including) this position and get
4186 * The READ index is managed by the firmware once the card is enabled.
4188 * The WRITE index maps to the last position the driver has read from -- the
4189 * position preceding WRITE is the last slot the firmware can place a packet.
4191 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4194 * During initialization the host sets up the READ queue position to the first
4195 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4197 * When the firmware places a packet in a buffer it will advance the READ index
4198 * and fire the RX interrupt. The driver can then query the READ index and
4199 * process as many packets as possible, moving the WRITE index forward as it
4200 * resets the Rx queue buffers with new memory.
4202 * The management in the driver is as follows:
4203 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4204 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4205 * to replenish the iwl->rxq->rx_free.
4206 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4207 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4208 * 'processed' and 'read' driver indexes as well)
4209 * + A received packet is processed and handed to the kernel network stack,
4210 * detached from the iwl->rxq. The driver 'processed' index is updated.
4211 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4212 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4213 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4214 * were enough free buffers and RX_STALLED is set it is cleared.
4219 * iwl_rx_queue_alloc() Allocates rx_free
4220 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4221 * iwl_rx_queue_restock
4222 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4223 * queue, updates firmware pointers, and updates
4224 * the WRITE index. If insufficient rx_free buffers
4225 * are available, schedules iwl_rx_replenish
4227 * -- enable interrupts --
4228 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4229 * READ INDEX, detaching the SKB from the pool.
4230 * Moves the packet buffer from queue to rx_used.
4231 * Calls iwl_rx_queue_restock to refill any empty
4238 * iwl_rx_queue_space - Return number of free slots available in queue.
4240 static int iwl_rx_queue_space(const struct iwl_rx_queue
*q
)
4242 int s
= q
->read
- q
->write
;
4245 /* keep some buffer to not confuse full and empty queue */
4253 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4255 * NOTE: This function has 3945 and 4965 specific code sections
4256 * but is declared in base due to the majority of the
4257 * implementation being the same (only a numeric constant is
4261 int iwl_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl_rx_queue
*q
)
4265 unsigned long flags
;
4267 spin_lock_irqsave(&q
->lock
, flags
);
4269 if (q
->need_update
== 0)
4272 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4273 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4275 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4276 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4277 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4281 rc
= iwl_grab_restricted_access(priv
);
4285 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_WPTR
,
4287 iwl_release_restricted_access(priv
);
4289 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
4295 spin_unlock_irqrestore(&q
->lock
, flags
);
4300 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4302 * NOTE: This function has 3945 and 4965 specific code paths in it.
4304 static inline __le32
iwl_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
4305 dma_addr_t dma_addr
)
4307 return cpu_to_le32((u32
)(dma_addr
>> 8));
4312 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4314 * If there are slots in the RX queue that need to be restocked,
4315 * and we have free pre-allocated buffers, fill the ranks as much
4316 * as we can pulling from rx_free.
4318 * This moves the 'write' index forward to catch up with 'processed', and
4319 * also updates the memory address in the firmware to reference the new
4322 int iwl_rx_queue_restock(struct iwl_priv
*priv
)
4324 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4325 struct list_head
*element
;
4326 struct iwl_rx_mem_buffer
*rxb
;
4327 unsigned long flags
;
4330 spin_lock_irqsave(&rxq
->lock
, flags
);
4331 write
= rxq
->write
& ~0x7;
4332 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
4333 element
= rxq
->rx_free
.next
;
4334 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4336 rxq
->bd
[rxq
->write
] = iwl_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
4337 rxq
->queue
[rxq
->write
] = rxb
;
4338 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
4341 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4342 /* If the pre-allocated buffer pool is dropping low, schedule to
4344 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
4345 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
4348 /* If we've added more space for the firmware to place data, tell it */
4349 if ((write
!= (rxq
->write
& ~0x7))
4350 || (abs(rxq
->write
- rxq
->read
) > 7)) {
4351 spin_lock_irqsave(&rxq
->lock
, flags
);
4352 rxq
->need_update
= 1;
4353 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4354 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
4363 * iwl_rx_replenish - Move all used packet from rx_used to rx_free
4365 * When moving to rx_free an SKB is allocated for the slot.
4367 * Also restock the Rx queue via iwl_rx_queue_restock.
4368 * This is called as a scheduled work item (except for during initialization)
4370 void iwl_rx_replenish(void *data
)
4372 struct iwl_priv
*priv
= data
;
4373 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4374 struct list_head
*element
;
4375 struct iwl_rx_mem_buffer
*rxb
;
4376 unsigned long flags
;
4377 spin_lock_irqsave(&rxq
->lock
, flags
);
4378 while (!list_empty(&rxq
->rx_used
)) {
4379 element
= rxq
->rx_used
.next
;
4380 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4382 alloc_skb(IWL_RX_BUF_SIZE
, __GFP_NOWARN
| GFP_ATOMIC
);
4384 if (net_ratelimit())
4385 printk(KERN_CRIT DRV_NAME
4386 ": Can not allocate SKB buffers\n");
4387 /* We don't reschedule replenish work here -- we will
4388 * call the restock method and if it still needs
4389 * more buffers it will schedule replenish */
4392 priv
->alloc_rxb_skb
++;
4395 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
4396 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4397 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
4400 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4402 spin_lock_irqsave(&priv
->lock
, flags
);
4403 iwl_rx_queue_restock(priv
);
4404 spin_unlock_irqrestore(&priv
->lock
, flags
);
4407 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4408 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4409 * This free routine walks the list of POOL entries and if SKB is set to
4410 * non NULL it is unmapped and freed
4412 void iwl_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4415 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
4416 if (rxq
->pool
[i
].skb
!= NULL
) {
4417 pci_unmap_single(priv
->pci_dev
,
4418 rxq
->pool
[i
].dma_addr
,
4419 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4420 dev_kfree_skb(rxq
->pool
[i
].skb
);
4424 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
4429 int iwl_rx_queue_alloc(struct iwl_priv
*priv
)
4431 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4432 struct pci_dev
*dev
= priv
->pci_dev
;
4435 spin_lock_init(&rxq
->lock
);
4436 INIT_LIST_HEAD(&rxq
->rx_free
);
4437 INIT_LIST_HEAD(&rxq
->rx_used
);
4438 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
4441 /* Fill the rx_used queue with _all_ of the Rx buffers */
4442 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
4443 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4444 /* Set us so that we have processed and used all buffers, but have
4445 * not restocked the Rx queue with fresh buffers */
4446 rxq
->read
= rxq
->write
= 0;
4447 rxq
->free_count
= 0;
4448 rxq
->need_update
= 0;
4452 void iwl_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4454 unsigned long flags
;
4456 spin_lock_irqsave(&rxq
->lock
, flags
);
4457 INIT_LIST_HEAD(&rxq
->rx_free
);
4458 INIT_LIST_HEAD(&rxq
->rx_used
);
4459 /* Fill the rx_used queue with _all_ of the Rx buffers */
4460 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
4461 /* In the reset function, these buffers may have been allocated
4462 * to an SKB, so we need to unmap and free potential storage */
4463 if (rxq
->pool
[i
].skb
!= NULL
) {
4464 pci_unmap_single(priv
->pci_dev
,
4465 rxq
->pool
[i
].dma_addr
,
4466 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4467 priv
->alloc_rxb_skb
--;
4468 dev_kfree_skb(rxq
->pool
[i
].skb
);
4469 rxq
->pool
[i
].skb
= NULL
;
4471 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4474 /* Set us so that we have processed and used all buffers, but have
4475 * not restocked the Rx queue with fresh buffers */
4476 rxq
->read
= rxq
->write
= 0;
4477 rxq
->free_count
= 0;
4478 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4481 /* Convert linear signal-to-noise ratio into dB */
4482 static u8 ratio2dB
[100] = {
4483 /* 0 1 2 3 4 5 6 7 8 9 */
4484 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4485 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4486 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4487 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4488 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4489 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4490 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4491 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4492 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4493 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4496 /* Calculates a relative dB value from a ratio of linear
4497 * (i.e. not dB) signal levels.
4498 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4499 int iwl_calc_db_from_ratio(int sig_ratio
)
4501 /* 1000:1 or higher just report as 60 dB */
4502 if (sig_ratio
>= 1000)
4505 /* 100:1 or higher, divide by 10 and use table,
4506 * add 20 dB to make up for divide by 10 */
4507 if (sig_ratio
>= 100)
4508 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4510 /* We shouldn't see this */
4514 /* Use table for ratios 1:1 - 99:1 */
4515 return (int)ratio2dB
[sig_ratio
];
4518 #define PERFECT_RSSI (-20) /* dBm */
4519 #define WORST_RSSI (-95) /* dBm */
4520 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4522 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4523 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4524 * about formulas used below. */
4525 int iwl_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4528 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4530 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4531 * as indicator; formula is (signal dbm - noise dbm).
4532 * SNR at or above 40 is a great signal (100%).
4533 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4534 * Weakest usable signal is usually 10 - 15 dB SNR. */
4536 if (rssi_dbm
- noise_dbm
>= 40)
4538 else if (rssi_dbm
< noise_dbm
)
4540 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4542 /* Else use just the signal level.
4543 * This formula is a least squares fit of data points collected and
4544 * compared with a reference system that had a percentage (%) display
4545 * for signal quality. */
4547 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4548 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4549 (RSSI_RANGE
* RSSI_RANGE
);
4553 else if (sig_qual
< 1)
4560 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4562 * Uses the priv->rx_handlers callback function array to invoke
4563 * the appropriate handlers, including command responses,
4564 * frame-received notifications, and other notifications.
4566 static void iwl_rx_handle(struct iwl_priv
*priv
)
4568 struct iwl_rx_mem_buffer
*rxb
;
4569 struct iwl_rx_packet
*pkt
;
4570 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4573 unsigned long flags
;
4575 r
= iwl_hw_get_rx_read(priv
);
4578 /* Rx interrupt, but nothing sent from uCode */
4580 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4583 rxb
= rxq
->queue
[i
];
4585 /* If an RXB doesn't have a queue slot associated with it
4586 * then a bug has been introduced in the queue refilling
4587 * routines -- catch it here */
4588 BUG_ON(rxb
== NULL
);
4590 rxq
->queue
[i
] = NULL
;
4592 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4594 PCI_DMA_FROMDEVICE
);
4595 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4597 /* Reclaim a command buffer only if this packet is a response
4598 * to a (driver-originated) command.
4599 * If the packet (e.g. Rx frame) originated from uCode,
4600 * there is no command buffer to reclaim.
4601 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4602 * but apparently a few don't get set; catch them here. */
4603 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4604 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
4605 (pkt
->hdr
.cmd
!= REPLY_4965_RX
) &&
4606 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
4607 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4608 (pkt
->hdr
.cmd
!= REPLY_TX
);
4610 /* Based on type of command response or notification,
4611 * handle those that need handling via function in
4612 * rx_handlers table. See iwl_setup_rx_handlers() */
4613 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4614 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4615 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4616 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4617 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4619 /* No handling needed */
4620 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4621 "r %d i %d No handler needed for %s, 0x%02x\n",
4622 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4627 /* Invoke any callbacks, transfer the skb to caller,
4628 * and fire off the (possibly) blocking iwl_send_cmd()
4629 * as we reclaim the driver command queue */
4630 if (rxb
&& rxb
->skb
)
4631 iwl_tx_cmd_complete(priv
, rxb
);
4633 IWL_WARNING("Claim null rxb?\n");
4636 /* For now we just don't re-use anything. We can tweak this
4637 * later to try and re-use notification packets and SKBs that
4638 * fail to Rx correctly */
4639 if (rxb
->skb
!= NULL
) {
4640 priv
->alloc_rxb_skb
--;
4641 dev_kfree_skb_any(rxb
->skb
);
4645 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4646 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4647 spin_lock_irqsave(&rxq
->lock
, flags
);
4648 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4649 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4650 i
= (i
+ 1) & RX_QUEUE_MASK
;
4653 /* Backtrack one entry */
4655 iwl_rx_queue_restock(priv
);
4658 int iwl_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4659 struct iwl_tx_queue
*txq
)
4663 int txq_id
= txq
->q
.id
;
4665 if (txq
->need_update
== 0)
4668 /* if we're trying to save power */
4669 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4670 /* wake up nic if it's powered down ...
4671 * uCode will wake up, and interrupt us again, so next
4672 * time we'll skip this part. */
4673 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4675 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4676 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4677 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4678 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4682 /* restore this queue's parameters in nic hardware. */
4683 rc
= iwl_grab_restricted_access(priv
);
4686 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
4687 txq
->q
.write_ptr
| (txq_id
<< 8));
4688 iwl_release_restricted_access(priv
);
4690 /* else not in power-save mode, uCode will never sleep when we're
4691 * trying to tx (during RFKILL, we're not trying to tx). */
4693 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4694 txq
->q
.write_ptr
| (txq_id
<< 8));
4696 txq
->need_update
= 0;
4701 #ifdef CONFIG_IWLWIFI_DEBUG
4702 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd
*rxon
)
4704 DECLARE_MAC_BUF(mac
);
4706 IWL_DEBUG_RADIO("RX CONFIG:\n");
4707 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4708 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4709 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4710 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4711 le32_to_cpu(rxon
->filter_flags
));
4712 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4713 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4714 rxon
->ofdm_basic_rates
);
4715 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4716 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4717 print_mac(mac
, rxon
->node_addr
));
4718 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4719 print_mac(mac
, rxon
->bssid_addr
));
4720 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4724 static void iwl_enable_interrupts(struct iwl_priv
*priv
)
4726 IWL_DEBUG_ISR("Enabling interrupts\n");
4727 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4728 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4731 static inline void iwl_disable_interrupts(struct iwl_priv
*priv
)
4733 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4735 /* disable interrupts from uCode/NIC to host */
4736 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4738 /* acknowledge/clear/reset any interrupts still pending
4739 * from uCode or flow handler (Rx/Tx DMA) */
4740 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4741 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4742 IWL_DEBUG_ISR("Disabled interrupts\n");
4745 static const char *desc_lookup(int i
)
4753 return "BAD_CHECKSUM";
4755 return "NMI_INTERRUPT";
4759 return "FATAL_ERROR";
4765 #define ERROR_START_OFFSET (1 * sizeof(u32))
4766 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4768 static void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
4771 u32 desc
, time
, count
, base
, data1
;
4772 u32 blink1
, blink2
, ilink1
, ilink2
;
4775 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4777 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4778 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4782 rc
= iwl_grab_restricted_access(priv
);
4784 IWL_WARNING("Can not read from adapter at this time.\n");
4788 count
= iwl_read_restricted_mem(priv
, base
);
4790 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4791 IWL_ERROR("Start IWL Error Log Dump:\n");
4792 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4793 priv
->status
, priv
->config
, count
);
4796 desc
= iwl_read_restricted_mem(priv
, base
+ 1 * sizeof(u32
));
4797 blink1
= iwl_read_restricted_mem(priv
, base
+ 3 * sizeof(u32
));
4798 blink2
= iwl_read_restricted_mem(priv
, base
+ 4 * sizeof(u32
));
4799 ilink1
= iwl_read_restricted_mem(priv
, base
+ 5 * sizeof(u32
));
4800 ilink2
= iwl_read_restricted_mem(priv
, base
+ 6 * sizeof(u32
));
4801 data1
= iwl_read_restricted_mem(priv
, base
+ 7 * sizeof(u32
));
4802 data2
= iwl_read_restricted_mem(priv
, base
+ 8 * sizeof(u32
));
4803 line
= iwl_read_restricted_mem(priv
, base
+ 9 * sizeof(u32
));
4804 time
= iwl_read_restricted_mem(priv
, base
+ 11 * sizeof(u32
));
4806 IWL_ERROR("Desc Time "
4807 "data1 data2 line\n");
4808 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4809 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
4810 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4811 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
4814 iwl_release_restricted_access(priv
);
4817 #define EVENT_START_OFFSET (4 * sizeof(u32))
4820 * iwl_print_event_log - Dump error event log to syslog
4822 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4824 static void iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4825 u32 num_events
, u32 mode
)
4828 u32 base
; /* SRAM byte address of event log header */
4829 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4830 u32 ptr
; /* SRAM byte address of log data */
4831 u32 ev
, time
, data
; /* event log data */
4833 if (num_events
== 0)
4836 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4839 event_size
= 2 * sizeof(u32
);
4841 event_size
= 3 * sizeof(u32
);
4843 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4845 /* "time" is actually "data" for mode 0 (no timestamp).
4846 * place event id # at far right for easier visual parsing. */
4847 for (i
= 0; i
< num_events
; i
++) {
4848 ev
= iwl_read_restricted_mem(priv
, ptr
);
4850 time
= iwl_read_restricted_mem(priv
, ptr
);
4853 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4855 data
= iwl_read_restricted_mem(priv
, ptr
);
4857 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4862 static void iwl_dump_nic_event_log(struct iwl_priv
*priv
)
4865 u32 base
; /* SRAM byte address of event log header */
4866 u32 capacity
; /* event log capacity in # entries */
4867 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4868 u32 num_wraps
; /* # times uCode wrapped to top of log */
4869 u32 next_entry
; /* index of next entry to be written by uCode */
4870 u32 size
; /* # entries that we'll print */
4872 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4873 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4874 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4878 rc
= iwl_grab_restricted_access(priv
);
4880 IWL_WARNING("Can not read from adapter at this time.\n");
4884 /* event log header */
4885 capacity
= iwl_read_restricted_mem(priv
, base
);
4886 mode
= iwl_read_restricted_mem(priv
, base
+ (1 * sizeof(u32
)));
4887 num_wraps
= iwl_read_restricted_mem(priv
, base
+ (2 * sizeof(u32
)));
4888 next_entry
= iwl_read_restricted_mem(priv
, base
+ (3 * sizeof(u32
)));
4890 size
= num_wraps
? capacity
: next_entry
;
4892 /* bail out if nothing in log */
4894 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4895 iwl_release_restricted_access(priv
);
4899 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4902 /* if uCode has wrapped back to top of log, start at the oldest entry,
4903 * i.e the next one that uCode would fill. */
4905 iwl_print_event_log(priv
, next_entry
,
4906 capacity
- next_entry
, mode
);
4908 /* (then/else) start at top of log */
4909 iwl_print_event_log(priv
, 0, next_entry
, mode
);
4911 iwl_release_restricted_access(priv
);
4915 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4917 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
4919 /* Set the FW error flag -- cleared on iwl_down */
4920 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4922 /* Cancel currently queued command. */
4923 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4925 #ifdef CONFIG_IWLWIFI_DEBUG
4926 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4927 iwl_dump_nic_error_log(priv
);
4928 iwl_dump_nic_event_log(priv
);
4929 iwl_print_rx_config_cmd(&priv
->staging_rxon
);
4933 wake_up_interruptible(&priv
->wait_command_queue
);
4935 /* Keep the restart process from trying to send host
4936 * commands by clearing the INIT status bit */
4937 clear_bit(STATUS_READY
, &priv
->status
);
4939 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4940 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4941 "Restarting adapter due to uCode error.\n");
4943 if (iwl_is_associated(priv
)) {
4944 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4945 sizeof(priv
->recovery_rxon
));
4946 priv
->error_recovering
= 1;
4948 queue_work(priv
->workqueue
, &priv
->restart
);
4952 static void iwl_error_recovery(struct iwl_priv
*priv
)
4954 unsigned long flags
;
4956 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4957 sizeof(priv
->staging_rxon
));
4958 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4959 iwl_commit_rxon(priv
);
4961 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
4963 spin_lock_irqsave(&priv
->lock
, flags
);
4964 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4965 priv
->error_recovering
= 0;
4966 spin_unlock_irqrestore(&priv
->lock
, flags
);
4969 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
4971 u32 inta
, handled
= 0;
4973 unsigned long flags
;
4974 #ifdef CONFIG_IWLWIFI_DEBUG
4978 spin_lock_irqsave(&priv
->lock
, flags
);
4980 /* Ack/clear/reset pending uCode interrupts.
4981 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4982 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4983 inta
= iwl_read32(priv
, CSR_INT
);
4984 iwl_write32(priv
, CSR_INT
, inta
);
4986 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4987 * Any new interrupts that happen after this, either while we're
4988 * in this tasklet, or later, will show up in next ISR/tasklet. */
4989 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4990 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4992 #ifdef CONFIG_IWLWIFI_DEBUG
4993 if (iwl_debug_level
& IWL_DL_ISR
) {
4994 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4995 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4996 inta
, inta_mask
, inta_fh
);
5000 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5001 * atomic, make sure that inta covers all the interrupts that
5002 * we've discovered, even if FH interrupt came in just after
5003 * reading CSR_INT. */
5004 if (inta_fh
& CSR_FH_INT_RX_MASK
)
5005 inta
|= CSR_INT_BIT_FH_RX
;
5006 if (inta_fh
& CSR_FH_INT_TX_MASK
)
5007 inta
|= CSR_INT_BIT_FH_TX
;
5009 /* Now service all interrupt bits discovered above. */
5010 if (inta
& CSR_INT_BIT_HW_ERR
) {
5011 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5013 /* Tell the device to stop sending interrupts */
5014 iwl_disable_interrupts(priv
);
5016 iwl_irq_handle_error(priv
);
5018 handled
|= CSR_INT_BIT_HW_ERR
;
5020 spin_unlock_irqrestore(&priv
->lock
, flags
);
5025 #ifdef CONFIG_IWLWIFI_DEBUG
5026 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5027 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5028 if (inta
& CSR_INT_BIT_MAC_CLK_ACTV
)
5029 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5031 /* Alive notification via Rx interrupt will do the real work */
5032 if (inta
& CSR_INT_BIT_ALIVE
)
5033 IWL_DEBUG_ISR("Alive interrupt\n");
5036 /* Safely ignore these bits for debug checks below */
5037 inta
&= ~(CSR_INT_BIT_MAC_CLK_ACTV
| CSR_INT_BIT_ALIVE
);
5039 /* HW RF KILL switch toggled (4965 only) */
5040 if (inta
& CSR_INT_BIT_RF_KILL
) {
5042 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
5043 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
5046 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
5047 "RF_KILL bit toggled to %s.\n",
5048 hw_rf_kill
? "disable radio":"enable radio");
5050 /* Queue restart only if RF_KILL switch was set to "kill"
5051 * when we loaded driver, and is now set to "enable".
5052 * After we're Alive, RF_KILL gets handled by
5053 * iwl_rx_card_state_notif() */
5054 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
)) {
5055 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
5056 queue_work(priv
->workqueue
, &priv
->restart
);
5059 handled
|= CSR_INT_BIT_RF_KILL
;
5062 /* Chip got too hot and stopped itself (4965 only) */
5063 if (inta
& CSR_INT_BIT_CT_KILL
) {
5064 IWL_ERROR("Microcode CT kill error detected.\n");
5065 handled
|= CSR_INT_BIT_CT_KILL
;
5068 /* Error detected by uCode */
5069 if (inta
& CSR_INT_BIT_SW_ERR
) {
5070 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5072 iwl_irq_handle_error(priv
);
5073 handled
|= CSR_INT_BIT_SW_ERR
;
5076 /* uCode wakes up after power-down sleep */
5077 if (inta
& CSR_INT_BIT_WAKEUP
) {
5078 IWL_DEBUG_ISR("Wakeup interrupt\n");
5079 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
5080 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
5081 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
5082 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
5083 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
5084 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
5085 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
5087 handled
|= CSR_INT_BIT_WAKEUP
;
5090 /* All uCode command responses, including Tx command responses,
5091 * Rx "responses" (frame-received notification), and other
5092 * notifications from uCode come through here*/
5093 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
5094 iwl_rx_handle(priv
);
5095 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
5098 if (inta
& CSR_INT_BIT_FH_TX
) {
5099 IWL_DEBUG_ISR("Tx interrupt\n");
5100 handled
|= CSR_INT_BIT_FH_TX
;
5103 if (inta
& ~handled
)
5104 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
5106 if (inta
& ~CSR_INI_SET_MASK
) {
5107 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5108 inta
& ~CSR_INI_SET_MASK
);
5109 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
5112 /* Re-enable all interrupts */
5113 iwl_enable_interrupts(priv
);
5115 #ifdef CONFIG_IWLWIFI_DEBUG
5116 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5117 inta
= iwl_read32(priv
, CSR_INT
);
5118 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
5119 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5120 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5121 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
5124 spin_unlock_irqrestore(&priv
->lock
, flags
);
5127 static irqreturn_t
iwl_isr(int irq
, void *data
)
5129 struct iwl_priv
*priv
= data
;
5130 u32 inta
, inta_mask
;
5135 spin_lock(&priv
->lock
);
5137 /* Disable (but don't clear!) interrupts here to avoid
5138 * back-to-back ISRs and sporadic interrupts from our NIC.
5139 * If we have something to service, the tasklet will re-enable ints.
5140 * If we *don't* have something, we'll re-enable before leaving here. */
5141 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
5142 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
5144 /* Discover which interrupts are active/pending */
5145 inta
= iwl_read32(priv
, CSR_INT
);
5146 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5148 /* Ignore interrupt if there's nothing in NIC to service.
5149 * This may be due to IRQ shared with another device,
5150 * or due to sporadic interrupts thrown from our NIC. */
5151 if (!inta
&& !inta_fh
) {
5152 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5156 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
5157 /* Hardware disappeared. It might have already raised
5159 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
5163 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5164 inta
, inta_mask
, inta_fh
);
5166 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5167 tasklet_schedule(&priv
->irq_tasklet
);
5170 spin_unlock(&priv
->lock
);
5174 /* re-enable interrupts here since we don't have anything to service. */
5175 iwl_enable_interrupts(priv
);
5176 spin_unlock(&priv
->lock
);
5180 /************************** EEPROM BANDS ****************************
5182 * The iwl_eeprom_band definitions below provide the mapping from the
5183 * EEPROM contents to the specific channel number supported for each
5186 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5187 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5188 * The specific geography and calibration information for that channel
5189 * is contained in the eeprom map itself.
5191 * During init, we copy the eeprom information and channel map
5192 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5194 * channel_map_24/52 provides the index in the channel_info array for a
5195 * given channel. We have to have two separate maps as there is channel
5196 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5199 * A value of 0xff stored in the channel_map indicates that the channel
5200 * is not supported by the hardware at all.
5202 * A value of 0xfe in the channel_map indicates that the channel is not
5203 * valid for Tx with the current hardware. This means that
5204 * while the system can tune and receive on a given channel, it may not
5205 * be able to associate or transmit any frames on that
5206 * channel. There is no corresponding channel information for that
5209 *********************************************************************/
5212 static const u8 iwl_eeprom_band_1
[14] = {
5213 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5217 static const u8 iwl_eeprom_band_2
[] = {
5218 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5221 static const u8 iwl_eeprom_band_3
[] = { /* 5205-5320MHz */
5222 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5225 static const u8 iwl_eeprom_band_4
[] = { /* 5500-5700MHz */
5226 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5229 static const u8 iwl_eeprom_band_5
[] = { /* 5725-5825MHz */
5230 145, 149, 153, 157, 161, 165
5233 static u8 iwl_eeprom_band_6
[] = { /* 2.4 FAT channel */
5237 static u8 iwl_eeprom_band_7
[] = { /* 5.2 FAT channel */
5238 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5241 static void iwl_init_band_reference(const struct iwl_priv
*priv
, int band
,
5242 int *eeprom_ch_count
,
5243 const struct iwl_eeprom_channel
5245 const u8
**eeprom_ch_index
)
5248 case 1: /* 2.4GHz band */
5249 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_1
);
5250 *eeprom_ch_info
= priv
->eeprom
.band_1_channels
;
5251 *eeprom_ch_index
= iwl_eeprom_band_1
;
5253 case 2: /* 5.2GHz band */
5254 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_2
);
5255 *eeprom_ch_info
= priv
->eeprom
.band_2_channels
;
5256 *eeprom_ch_index
= iwl_eeprom_band_2
;
5258 case 3: /* 5.2GHz band */
5259 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_3
);
5260 *eeprom_ch_info
= priv
->eeprom
.band_3_channels
;
5261 *eeprom_ch_index
= iwl_eeprom_band_3
;
5263 case 4: /* 5.2GHz band */
5264 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_4
);
5265 *eeprom_ch_info
= priv
->eeprom
.band_4_channels
;
5266 *eeprom_ch_index
= iwl_eeprom_band_4
;
5268 case 5: /* 5.2GHz band */
5269 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_5
);
5270 *eeprom_ch_info
= priv
->eeprom
.band_5_channels
;
5271 *eeprom_ch_index
= iwl_eeprom_band_5
;
5274 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_6
);
5275 *eeprom_ch_info
= priv
->eeprom
.band_24_channels
;
5276 *eeprom_ch_index
= iwl_eeprom_band_6
;
5279 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_7
);
5280 *eeprom_ch_info
= priv
->eeprom
.band_52_channels
;
5281 *eeprom_ch_index
= iwl_eeprom_band_7
;
5289 const struct iwl_channel_info
*iwl_get_channel_info(const struct iwl_priv
*priv
,
5290 int phymode
, u16 channel
)
5295 case MODE_IEEE80211A
:
5296 for (i
= 14; i
< priv
->channel_count
; i
++) {
5297 if (priv
->channel_info
[i
].channel
== channel
)
5298 return &priv
->channel_info
[i
];
5302 case MODE_IEEE80211B
:
5303 case MODE_IEEE80211G
:
5304 if (channel
>= 1 && channel
<= 14)
5305 return &priv
->channel_info
[channel
- 1];
5313 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5316 static int iwl_init_channel_map(struct iwl_priv
*priv
)
5318 int eeprom_ch_count
= 0;
5319 const u8
*eeprom_ch_index
= NULL
;
5320 const struct iwl_eeprom_channel
*eeprom_ch_info
= NULL
;
5322 struct iwl_channel_info
*ch_info
;
5324 if (priv
->channel_count
) {
5325 IWL_DEBUG_INFO("Channel map already initialized.\n");
5329 if (priv
->eeprom
.version
< 0x2f) {
5330 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5331 priv
->eeprom
.version
);
5335 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5337 priv
->channel_count
=
5338 ARRAY_SIZE(iwl_eeprom_band_1
) +
5339 ARRAY_SIZE(iwl_eeprom_band_2
) +
5340 ARRAY_SIZE(iwl_eeprom_band_3
) +
5341 ARRAY_SIZE(iwl_eeprom_band_4
) +
5342 ARRAY_SIZE(iwl_eeprom_band_5
);
5344 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv
->channel_count
);
5346 priv
->channel_info
= kzalloc(sizeof(struct iwl_channel_info
) *
5347 priv
->channel_count
, GFP_KERNEL
);
5348 if (!priv
->channel_info
) {
5349 IWL_ERROR("Could not allocate channel_info\n");
5350 priv
->channel_count
= 0;
5354 ch_info
= priv
->channel_info
;
5356 /* Loop through the 5 EEPROM bands adding them in order to the
5357 * channel map we maintain (that contains additional information than
5358 * what just in the EEPROM) */
5359 for (band
= 1; band
<= 5; band
++) {
5361 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5362 &eeprom_ch_info
, &eeprom_ch_index
);
5364 /* Loop through each band adding each of the channels */
5365 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5366 ch_info
->channel
= eeprom_ch_index
[ch
];
5367 ch_info
->phymode
= (band
== 1) ? MODE_IEEE80211B
:
5370 /* permanently store EEPROM's channel regulatory flags
5371 * and max power in channel info database. */
5372 ch_info
->eeprom
= eeprom_ch_info
[ch
];
5374 /* Copy the run-time flags so they are there even on
5375 * invalid channels */
5376 ch_info
->flags
= eeprom_ch_info
[ch
].flags
;
5378 if (!(is_channel_valid(ch_info
))) {
5379 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5383 is_channel_a_band(ch_info
) ?
5389 /* Initialize regulatory-based run-time data */
5390 ch_info
->max_power_avg
= ch_info
->curr_txpow
=
5391 eeprom_ch_info
[ch
].max_power_avg
;
5392 ch_info
->scan_power
= eeprom_ch_info
[ch
].max_power_avg
;
5393 ch_info
->min_power
= 0;
5395 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5396 " %ddBm): Ad-Hoc %ssupported\n",
5398 is_channel_a_band(ch_info
) ?
5400 CHECK_AND_PRINT(IBSS
),
5401 CHECK_AND_PRINT(ACTIVE
),
5402 CHECK_AND_PRINT(RADAR
),
5403 CHECK_AND_PRINT(WIDE
),
5404 CHECK_AND_PRINT(NARROW
),
5405 CHECK_AND_PRINT(DFS
),
5406 eeprom_ch_info
[ch
].flags
,
5407 eeprom_ch_info
[ch
].max_power_avg
,
5408 ((eeprom_ch_info
[ch
].
5409 flags
& EEPROM_CHANNEL_IBSS
)
5410 && !(eeprom_ch_info
[ch
].
5411 flags
& EEPROM_CHANNEL_RADAR
))
5414 /* Set the user_txpower_limit to the highest power
5415 * supported by any channel */
5416 if (eeprom_ch_info
[ch
].max_power_avg
>
5417 priv
->user_txpower_limit
)
5418 priv
->user_txpower_limit
=
5419 eeprom_ch_info
[ch
].max_power_avg
;
5425 for (band
= 6; band
<= 7; band
++) {
5427 u8 fat_extension_chan
;
5429 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5430 &eeprom_ch_info
, &eeprom_ch_index
);
5432 phymode
= (band
== 6) ? MODE_IEEE80211B
: MODE_IEEE80211A
;
5433 /* Loop through each band adding each of the channels */
5434 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5437 ((eeprom_ch_index
[ch
] == 5) ||
5438 (eeprom_ch_index
[ch
] == 6) ||
5439 (eeprom_ch_index
[ch
] == 7)))
5440 fat_extension_chan
= HT_IE_EXT_CHANNEL_MAX
;
5442 fat_extension_chan
= HT_IE_EXT_CHANNEL_ABOVE
;
5444 iwl4965_set_fat_chan_info(priv
, phymode
,
5445 eeprom_ch_index
[ch
],
5446 &(eeprom_ch_info
[ch
]),
5447 fat_extension_chan
);
5449 iwl4965_set_fat_chan_info(priv
, phymode
,
5450 (eeprom_ch_index
[ch
] + 4),
5451 &(eeprom_ch_info
[ch
]),
5452 HT_IE_EXT_CHANNEL_BELOW
);
5459 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5460 * sending probe req. This should be set long enough to hear probe responses
5461 * from more than one AP. */
5462 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5463 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5465 /* For faster active scanning, scan will move to the next channel if fewer than
5466 * PLCP_QUIET_THRESH packets are heard on this channel within
5467 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5468 * time if it's a quiet channel (nothing responded to our probe, and there's
5469 * no other traffic).
5470 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5471 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5472 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5474 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5475 * Must be set longer than active dwell time.
5476 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5477 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5478 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5479 #define IWL_PASSIVE_DWELL_BASE (100)
5480 #define IWL_CHANNEL_TUNE_TIME 5
5482 static inline u16
iwl_get_active_dwell_time(struct iwl_priv
*priv
, int phymode
)
5484 if (phymode
== MODE_IEEE80211A
)
5485 return IWL_ACTIVE_DWELL_TIME_52
;
5487 return IWL_ACTIVE_DWELL_TIME_24
;
5490 static u16
iwl_get_passive_dwell_time(struct iwl_priv
*priv
, int phymode
)
5492 u16 active
= iwl_get_active_dwell_time(priv
, phymode
);
5493 u16 passive
= (phymode
!= MODE_IEEE80211A
) ?
5494 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
5495 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
5497 if (iwl_is_associated(priv
)) {
5498 /* If we're associated, we clamp the maximum passive
5499 * dwell time to be 98% of the beacon interval (minus
5500 * 2 * channel tune time) */
5501 passive
= priv
->beacon_int
;
5502 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
5503 passive
= IWL_PASSIVE_DWELL_BASE
;
5504 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
5507 if (passive
<= active
)
5508 passive
= active
+ 1;
5513 static int iwl_get_channels_for_scan(struct iwl_priv
*priv
, int phymode
,
5514 u8 is_active
, u8 direct_mask
,
5515 struct iwl_scan_channel
*scan_ch
)
5517 const struct ieee80211_channel
*channels
= NULL
;
5518 const struct ieee80211_hw_mode
*hw_mode
;
5519 const struct iwl_channel_info
*ch_info
;
5520 u16 passive_dwell
= 0;
5521 u16 active_dwell
= 0;
5524 hw_mode
= iwl_get_hw_mode(priv
, phymode
);
5528 channels
= hw_mode
->channels
;
5530 active_dwell
= iwl_get_active_dwell_time(priv
, phymode
);
5531 passive_dwell
= iwl_get_passive_dwell_time(priv
, phymode
);
5533 for (i
= 0, added
= 0; i
< hw_mode
->num_channels
; i
++) {
5534 if (channels
[i
].chan
==
5535 le16_to_cpu(priv
->active_rxon
.channel
)) {
5536 if (iwl_is_associated(priv
)) {
5538 ("Skipping current channel %d\n",
5539 le16_to_cpu(priv
->active_rxon
.channel
));
5542 } else if (priv
->only_active_channel
)
5545 scan_ch
->channel
= channels
[i
].chan
;
5547 ch_info
= iwl_get_channel_info(priv
, phymode
, scan_ch
->channel
);
5548 if (!is_channel_valid(ch_info
)) {
5549 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5554 if (!is_active
|| is_channel_passive(ch_info
) ||
5555 !(channels
[i
].flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
))
5556 scan_ch
->type
= 0; /* passive */
5558 scan_ch
->type
= 1; /* active */
5560 if (scan_ch
->type
& 1)
5561 scan_ch
->type
|= (direct_mask
<< 1);
5563 if (is_channel_narrow(ch_info
))
5564 scan_ch
->type
|= (1 << 7);
5566 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
5567 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
5569 /* Set power levels to defaults */
5570 scan_ch
->tpc
.dsp_atten
= 110;
5571 /* scan_pwr_info->tpc.dsp_atten; */
5573 /*scan_pwr_info->tpc.tx_gain; */
5574 if (phymode
== MODE_IEEE80211A
)
5575 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
5577 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
5578 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5580 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5584 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5586 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
5587 (scan_ch
->type
& 1) ?
5588 active_dwell
: passive_dwell
);
5594 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
5598 static void iwl_reset_channel_flag(struct iwl_priv
*priv
)
5601 for (i
= 0; i
< 3; i
++) {
5602 struct ieee80211_hw_mode
*hw_mode
= (void *)&priv
->modes
[i
];
5603 for (j
= 0; j
< hw_mode
->num_channels
; j
++)
5604 hw_mode
->channels
[j
].flag
= hw_mode
->channels
[j
].val
;
5608 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
5609 struct ieee80211_rate
*rates
)
5613 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
5614 rates
[i
].rate
= iwl_rates
[i
].ieee
* 5;
5615 rates
[i
].val
= i
; /* Rate scaling will work on indexes */
5617 rates
[i
].flags
= IEEE80211_RATE_SUPPORTED
;
5618 /* Only OFDM have the bits-per-symbol set */
5619 if ((i
<= IWL_LAST_OFDM_RATE
) && (i
>= IWL_FIRST_OFDM_RATE
))
5620 rates
[i
].flags
|= IEEE80211_RATE_OFDM
;
5623 * If CCK 1M then set rate flag to CCK else CCK_2
5624 * which is CCK | PREAMBLE2
5626 rates
[i
].flags
|= (iwl_rates
[i
].plcp
== 10) ?
5627 IEEE80211_RATE_CCK
: IEEE80211_RATE_CCK_2
;
5630 /* Set up which ones are basic rates... */
5631 if (IWL_BASIC_RATES_MASK
& (1 << i
))
5632 rates
[i
].flags
|= IEEE80211_RATE_BASIC
;
5635 iwl4965_init_hw_rates(priv
, rates
);
5639 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5641 static int iwl_init_geos(struct iwl_priv
*priv
)
5643 struct iwl_channel_info
*ch
;
5644 struct ieee80211_hw_mode
*modes
;
5645 struct ieee80211_channel
*channels
;
5646 struct ieee80211_channel
*geo_ch
;
5647 struct ieee80211_rate
*rates
;
5659 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5660 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5664 modes
= kzalloc(sizeof(struct ieee80211_hw_mode
) * mode_count
,
5669 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
5670 priv
->channel_count
, GFP_KERNEL
);
5676 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_MAX_RATES
+ 1)),
5689 /* 5.2GHz channels start after the 2.4GHz channels */
5690 modes
[A
].mode
= MODE_IEEE80211A
;
5691 modes
[A
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5692 modes
[A
].rates
= rates
;
5693 modes
[A
].num_rates
= 8; /* just OFDM */
5694 modes
[A
].rates
= &rates
[4];
5695 modes
[A
].num_channels
= 0;
5697 modes
[B
].mode
= MODE_IEEE80211B
;
5698 modes
[B
].channels
= channels
;
5699 modes
[B
].rates
= rates
;
5700 modes
[B
].num_rates
= 4; /* just CCK */
5701 modes
[B
].num_channels
= 0;
5703 modes
[G
].mode
= MODE_IEEE80211G
;
5704 modes
[G
].channels
= channels
;
5705 modes
[G
].rates
= rates
;
5706 modes
[G
].num_rates
= 12; /* OFDM & CCK */
5707 modes
[G
].num_channels
= 0;
5709 modes
[G_11N
].mode
= MODE_IEEE80211G
;
5710 modes
[G_11N
].channels
= channels
;
5711 modes
[G_11N
].num_rates
= 13; /* OFDM & CCK */
5712 modes
[G_11N
].rates
= rates
;
5713 modes
[G_11N
].num_channels
= 0;
5715 modes
[A_11N
].mode
= MODE_IEEE80211A
;
5716 modes
[A_11N
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5717 modes
[A_11N
].rates
= &rates
[4];
5718 modes
[A_11N
].num_rates
= 9; /* just OFDM */
5719 modes
[A_11N
].num_channels
= 0;
5721 priv
->ieee_channels
= channels
;
5722 priv
->ieee_rates
= rates
;
5724 iwl_init_hw_rates(priv
, rates
);
5726 for (i
= 0, geo_ch
= channels
; i
< priv
->channel_count
; i
++) {
5727 ch
= &priv
->channel_info
[i
];
5729 if (!is_channel_valid(ch
)) {
5730 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5732 ch
->channel
, is_channel_a_band(ch
) ?
5737 if (is_channel_a_band(ch
)) {
5738 geo_ch
= &modes
[A
].channels
[modes
[A
].num_channels
++];
5739 modes
[A_11N
].num_channels
++;
5741 geo_ch
= &modes
[B
].channels
[modes
[B
].num_channels
++];
5742 modes
[G
].num_channels
++;
5743 modes
[G_11N
].num_channels
++;
5746 geo_ch
->freq
= ieee80211chan2mhz(ch
->channel
);
5747 geo_ch
->chan
= ch
->channel
;
5748 geo_ch
->power_level
= ch
->max_power_avg
;
5749 geo_ch
->antenna_max
= 0xff;
5751 if (is_channel_valid(ch
)) {
5752 geo_ch
->flag
= IEEE80211_CHAN_W_SCAN
;
5753 if (ch
->flags
& EEPROM_CHANNEL_IBSS
)
5754 geo_ch
->flag
|= IEEE80211_CHAN_W_IBSS
;
5756 if (ch
->flags
& EEPROM_CHANNEL_ACTIVE
)
5757 geo_ch
->flag
|= IEEE80211_CHAN_W_ACTIVE_SCAN
;
5759 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
5760 geo_ch
->flag
|= IEEE80211_CHAN_W_RADAR_DETECT
;
5762 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
5763 priv
->max_channel_txpower_limit
=
5767 geo_ch
->val
= geo_ch
->flag
;
5770 if ((modes
[A
].num_channels
== 0) && priv
->is_abg
) {
5771 printk(KERN_INFO DRV_NAME
5772 ": Incorrectly detected BG card as ABG. Please send "
5773 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5774 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
5778 printk(KERN_INFO DRV_NAME
5779 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5780 modes
[G
].num_channels
, modes
[A
].num_channels
);
5783 * NOTE: We register these in preference of order -- the
5784 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5785 * a phymode based on rates or AP capabilities but seems to
5786 * configure it purely on if the channel being configured
5787 * is supported by a mode -- and the first match is taken
5790 if (modes
[G
].num_channels
)
5791 ieee80211_register_hwmode(priv
->hw
, &modes
[G
]);
5792 if (modes
[B
].num_channels
)
5793 ieee80211_register_hwmode(priv
->hw
, &modes
[B
]);
5794 if (modes
[A
].num_channels
)
5795 ieee80211_register_hwmode(priv
->hw
, &modes
[A
]);
5797 priv
->modes
= modes
;
5798 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5803 /******************************************************************************
5805 * uCode download functions
5807 ******************************************************************************/
5809 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
5811 if (priv
->ucode_code
.v_addr
!= NULL
) {
5812 pci_free_consistent(priv
->pci_dev
,
5813 priv
->ucode_code
.len
,
5814 priv
->ucode_code
.v_addr
,
5815 priv
->ucode_code
.p_addr
);
5816 priv
->ucode_code
.v_addr
= NULL
;
5818 if (priv
->ucode_data
.v_addr
!= NULL
) {
5819 pci_free_consistent(priv
->pci_dev
,
5820 priv
->ucode_data
.len
,
5821 priv
->ucode_data
.v_addr
,
5822 priv
->ucode_data
.p_addr
);
5823 priv
->ucode_data
.v_addr
= NULL
;
5825 if (priv
->ucode_data_backup
.v_addr
!= NULL
) {
5826 pci_free_consistent(priv
->pci_dev
,
5827 priv
->ucode_data_backup
.len
,
5828 priv
->ucode_data_backup
.v_addr
,
5829 priv
->ucode_data_backup
.p_addr
);
5830 priv
->ucode_data_backup
.v_addr
= NULL
;
5832 if (priv
->ucode_init
.v_addr
!= NULL
) {
5833 pci_free_consistent(priv
->pci_dev
,
5834 priv
->ucode_init
.len
,
5835 priv
->ucode_init
.v_addr
,
5836 priv
->ucode_init
.p_addr
);
5837 priv
->ucode_init
.v_addr
= NULL
;
5839 if (priv
->ucode_init_data
.v_addr
!= NULL
) {
5840 pci_free_consistent(priv
->pci_dev
,
5841 priv
->ucode_init_data
.len
,
5842 priv
->ucode_init_data
.v_addr
,
5843 priv
->ucode_init_data
.p_addr
);
5844 priv
->ucode_init_data
.v_addr
= NULL
;
5846 if (priv
->ucode_boot
.v_addr
!= NULL
) {
5847 pci_free_consistent(priv
->pci_dev
,
5848 priv
->ucode_boot
.len
,
5849 priv
->ucode_boot
.v_addr
,
5850 priv
->ucode_boot
.p_addr
);
5851 priv
->ucode_boot
.v_addr
= NULL
;
5856 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5857 * looking at all data.
5859 static int iwl_verify_inst_full(struct iwl_priv
*priv
, __le32
* image
, u32 len
)
5866 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5868 rc
= iwl_grab_restricted_access(priv
);
5872 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5875 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5876 /* read data comes through single port, auto-incr addr */
5877 /* NOTE: Use the debugless read so we don't flood kernel log
5878 * if IWL_DL_IO is set */
5879 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5880 if (val
!= le32_to_cpu(*image
)) {
5881 IWL_ERROR("uCode INST section is invalid at "
5882 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5883 save_len
- len
, val
, le32_to_cpu(*image
));
5891 iwl_release_restricted_access(priv
);
5895 ("ucode image in INSTRUCTION memory is good\n");
5902 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5903 * using sample data 100 bytes apart. If these sample points are good,
5904 * it's a pretty good bet that everything between them is good, too.
5906 static int iwl_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5913 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5915 rc
= iwl_grab_restricted_access(priv
);
5919 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5920 /* read data comes through single port, auto-incr addr */
5921 /* NOTE: Use the debugless read so we don't flood kernel log
5922 * if IWL_DL_IO is set */
5923 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
,
5924 i
+ RTC_INST_LOWER_BOUND
);
5925 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5926 if (val
!= le32_to_cpu(*image
)) {
5927 #if 0 /* Enable this if you want to see details */
5928 IWL_ERROR("uCode INST section is invalid at "
5929 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5939 iwl_release_restricted_access(priv
);
5946 * iwl_verify_ucode - determine which instruction image is in SRAM,
5947 * and verify its contents
5949 static int iwl_verify_ucode(struct iwl_priv
*priv
)
5956 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5957 len
= priv
->ucode_boot
.len
;
5958 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5960 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5964 /* Try initialize */
5965 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5966 len
= priv
->ucode_init
.len
;
5967 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5969 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5973 /* Try runtime/protocol */
5974 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5975 len
= priv
->ucode_code
.len
;
5976 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5978 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5982 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5984 /* Show first several data entries in instruction SRAM.
5985 * Selection of bootstrap image is arbitrary. */
5986 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5987 len
= priv
->ucode_boot
.len
;
5988 rc
= iwl_verify_inst_full(priv
, image
, len
);
5994 /* check contents of special bootstrap uCode SRAM */
5995 static int iwl_verify_bsm(struct iwl_priv
*priv
)
5997 __le32
*image
= priv
->ucode_boot
.v_addr
;
5998 u32 len
= priv
->ucode_boot
.len
;
6002 IWL_DEBUG_INFO("Begin verify bsm\n");
6004 /* verify BSM SRAM contents */
6005 val
= iwl_read_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
);
6006 for (reg
= BSM_SRAM_LOWER_BOUND
;
6007 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
6008 reg
+= sizeof(u32
), image
++) {
6009 val
= iwl_read_restricted_reg(priv
, reg
);
6010 if (val
!= le32_to_cpu(*image
)) {
6011 IWL_ERROR("BSM uCode verification failed at "
6012 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6013 BSM_SRAM_LOWER_BOUND
,
6014 reg
- BSM_SRAM_LOWER_BOUND
, len
,
6015 val
, le32_to_cpu(*image
));
6020 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6026 * iwl_load_bsm - Load bootstrap instructions
6030 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6031 * in special SRAM that does not power down during RFKILL. When powering back
6032 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6033 * the bootstrap program into the on-board processor, and starts it.
6035 * The bootstrap program loads (via DMA) instructions and data for a new
6036 * program from host DRAM locations indicated by the host driver in the
6037 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6040 * When initializing the NIC, the host driver points the BSM to the
6041 * "initialize" uCode image. This uCode sets up some internal data, then
6042 * notifies host via "initialize alive" that it is complete.
6044 * The host then replaces the BSM_DRAM_* pointer values to point to the
6045 * normal runtime uCode instructions and a backup uCode data cache buffer
6046 * (filled initially with starting data values for the on-board processor),
6047 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6048 * which begins normal operation.
6050 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6051 * the backup data cache in DRAM before SRAM is powered down.
6053 * When powering back up, the BSM loads the bootstrap program. This reloads
6054 * the runtime uCode instructions and the backup data cache into SRAM,
6055 * and re-launches the runtime uCode from where it left off.
6057 static int iwl_load_bsm(struct iwl_priv
*priv
)
6059 __le32
*image
= priv
->ucode_boot
.v_addr
;
6060 u32 len
= priv
->ucode_boot
.len
;
6070 IWL_DEBUG_INFO("Begin load bsm\n");
6072 /* make sure bootstrap program is no larger than BSM's SRAM size */
6073 if (len
> IWL_MAX_BSM_SIZE
)
6076 /* Tell bootstrap uCode where to find the "Initialize" uCode
6077 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6078 * NOTE: iwl_initialize_alive_start() will replace these values,
6079 * after the "initialize" uCode has run, to point to
6080 * runtime/protocol instructions and backup data cache. */
6081 pinst
= priv
->ucode_init
.p_addr
>> 4;
6082 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
6083 inst_len
= priv
->ucode_init
.len
;
6084 data_len
= priv
->ucode_init_data
.len
;
6086 rc
= iwl_grab_restricted_access(priv
);
6090 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6091 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6092 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
6093 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
6095 /* Fill BSM memory with bootstrap instructions */
6096 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
6097 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
6098 reg_offset
+= sizeof(u32
), image
++)
6099 _iwl_write_restricted_reg(priv
, reg_offset
,
6100 le32_to_cpu(*image
));
6102 rc
= iwl_verify_bsm(priv
);
6104 iwl_release_restricted_access(priv
);
6108 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6109 iwl_write_restricted_reg(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
6110 iwl_write_restricted_reg(priv
, BSM_WR_MEM_DST_REG
,
6111 RTC_INST_LOWER_BOUND
);
6112 iwl_write_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
6114 /* Load bootstrap code into instruction SRAM now,
6115 * to prepare to load "initialize" uCode */
6116 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6117 BSM_WR_CTRL_REG_BIT_START
);
6119 /* Wait for load of bootstrap uCode to finish */
6120 for (i
= 0; i
< 100; i
++) {
6121 done
= iwl_read_restricted_reg(priv
, BSM_WR_CTRL_REG
);
6122 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
6127 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
6129 IWL_ERROR("BSM write did not complete!\n");
6133 /* Enable future boot loads whenever power management unit triggers it
6134 * (e.g. when powering back up after power-save shutdown) */
6135 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6136 BSM_WR_CTRL_REG_BIT_START_EN
);
6138 iwl_release_restricted_access(priv
);
6143 static void iwl_nic_start(struct iwl_priv
*priv
)
6145 /* Remove all resets to allow NIC to operate */
6146 iwl_write32(priv
, CSR_RESET
, 0);
6150 * iwl_read_ucode - Read uCode images from disk file.
6152 * Copy into buffers for card to fetch via bus-mastering
6154 static int iwl_read_ucode(struct iwl_priv
*priv
)
6156 struct iwl_ucode
*ucode
;
6158 const struct firmware
*ucode_raw
;
6159 const char *name
= "iwlwifi-4965" IWL4965_UCODE_API
".ucode";
6162 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
6164 /* Ask kernel firmware_class module to get the boot firmware off disk.
6165 * request_firmware() is synchronous, file is in memory on return. */
6166 rc
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
6168 IWL_ERROR("%s firmware file req failed: Reason %d\n", name
, rc
);
6172 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6173 name
, ucode_raw
->size
);
6175 /* Make sure that we got at least our header! */
6176 if (ucode_raw
->size
< sizeof(*ucode
)) {
6177 IWL_ERROR("File size way too small!\n");
6182 /* Data from ucode file: header followed by uCode images */
6183 ucode
= (void *)ucode_raw
->data
;
6185 ver
= le32_to_cpu(ucode
->ver
);
6186 inst_size
= le32_to_cpu(ucode
->inst_size
);
6187 data_size
= le32_to_cpu(ucode
->data_size
);
6188 init_size
= le32_to_cpu(ucode
->init_size
);
6189 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
6190 boot_size
= le32_to_cpu(ucode
->boot_size
);
6192 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
6193 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6195 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6197 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6199 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6201 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6204 /* Verify size of file vs. image size info in file's header */
6205 if (ucode_raw
->size
< sizeof(*ucode
) +
6206 inst_size
+ data_size
+ init_size
+
6207 init_data_size
+ boot_size
) {
6209 IWL_DEBUG_INFO("uCode file size %d too small\n",
6210 (int)ucode_raw
->size
);
6215 /* Verify that uCode images will fit in card's SRAM */
6216 if (inst_size
> IWL_MAX_INST_SIZE
) {
6217 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6223 if (data_size
> IWL_MAX_DATA_SIZE
) {
6224 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6229 if (init_size
> IWL_MAX_INST_SIZE
) {
6231 ("uCode init instr len %d too large to fit in card\n",
6236 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
6238 ("uCode init data len %d too large to fit in card\n",
6239 (int)init_data_size
);
6243 if (boot_size
> IWL_MAX_BSM_SIZE
) {
6245 ("uCode boot instr len %d too large to fit in bsm\n",
6251 /* Allocate ucode buffers for card's bus-master loading ... */
6253 /* Runtime instructions and 2 copies of data:
6254 * 1) unmodified from disk
6255 * 2) backup cache for save/restore during power-downs */
6256 priv
->ucode_code
.len
= inst_size
;
6257 priv
->ucode_code
.v_addr
=
6258 pci_alloc_consistent(priv
->pci_dev
,
6259 priv
->ucode_code
.len
,
6260 &(priv
->ucode_code
.p_addr
));
6262 priv
->ucode_data
.len
= data_size
;
6263 priv
->ucode_data
.v_addr
=
6264 pci_alloc_consistent(priv
->pci_dev
,
6265 priv
->ucode_data
.len
,
6266 &(priv
->ucode_data
.p_addr
));
6268 priv
->ucode_data_backup
.len
= data_size
;
6269 priv
->ucode_data_backup
.v_addr
=
6270 pci_alloc_consistent(priv
->pci_dev
,
6271 priv
->ucode_data_backup
.len
,
6272 &(priv
->ucode_data_backup
.p_addr
));
6275 /* Initialization instructions and data */
6276 priv
->ucode_init
.len
= init_size
;
6277 priv
->ucode_init
.v_addr
=
6278 pci_alloc_consistent(priv
->pci_dev
,
6279 priv
->ucode_init
.len
,
6280 &(priv
->ucode_init
.p_addr
));
6282 priv
->ucode_init_data
.len
= init_data_size
;
6283 priv
->ucode_init_data
.v_addr
=
6284 pci_alloc_consistent(priv
->pci_dev
,
6285 priv
->ucode_init_data
.len
,
6286 &(priv
->ucode_init_data
.p_addr
));
6288 /* Bootstrap (instructions only, no data) */
6289 priv
->ucode_boot
.len
= boot_size
;
6290 priv
->ucode_boot
.v_addr
=
6291 pci_alloc_consistent(priv
->pci_dev
,
6292 priv
->ucode_boot
.len
,
6293 &(priv
->ucode_boot
.p_addr
));
6295 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
6296 !priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
||
6297 !priv
->ucode_boot
.v_addr
|| !priv
->ucode_data_backup
.v_addr
)
6300 /* Copy images into buffers for card's bus-master reads ... */
6302 /* Runtime instructions (first block of data in file) */
6303 src
= &ucode
->data
[0];
6304 len
= priv
->ucode_code
.len
;
6305 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6307 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
6308 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6309 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
6311 /* Runtime data (2nd block)
6312 * NOTE: Copy into backup buffer will be done in iwl_up() */
6313 src
= &ucode
->data
[inst_size
];
6314 len
= priv
->ucode_data
.len
;
6315 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6317 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
6318 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
6320 /* Initialization instructions (3rd block) */
6322 src
= &ucode
->data
[inst_size
+ data_size
];
6323 len
= priv
->ucode_init
.len
;
6324 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6326 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
6329 /* Initialization data (4th block) */
6330 if (init_data_size
) {
6331 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
6332 len
= priv
->ucode_init_data
.len
;
6333 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6335 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
6338 /* Bootstrap instructions (5th block) */
6339 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
6340 len
= priv
->ucode_boot
.len
;
6341 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6343 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
6345 /* We have our copies now, allow OS release its copies */
6346 release_firmware(ucode_raw
);
6350 IWL_ERROR("failed to allocate pci memory\n");
6352 iwl_dealloc_ucode_pci(priv
);
6355 release_firmware(ucode_raw
);
6363 * iwl_set_ucode_ptrs - Set uCode address location
6365 * Tell initialization uCode where to find runtime uCode.
6367 * BSM registers initially contain pointers to initialization uCode.
6368 * We need to replace them to load runtime uCode inst and data,
6369 * and to save runtime data when powering down.
6371 static int iwl_set_ucode_ptrs(struct iwl_priv
*priv
)
6376 unsigned long flags
;
6378 /* bits 35:4 for 4965 */
6379 pinst
= priv
->ucode_code
.p_addr
>> 4;
6380 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
6382 spin_lock_irqsave(&priv
->lock
, flags
);
6383 rc
= iwl_grab_restricted_access(priv
);
6385 spin_unlock_irqrestore(&priv
->lock
, flags
);
6389 /* Tell bootstrap uCode where to find image to load */
6390 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6391 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6392 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
6393 priv
->ucode_data
.len
);
6395 /* Inst bytecount must be last to set up, bit 31 signals uCode
6396 * that all new ptr/size info is in place */
6397 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
6398 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
6400 iwl_release_restricted_access(priv
);
6402 spin_unlock_irqrestore(&priv
->lock
, flags
);
6404 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6410 * iwl_init_alive_start - Called after REPLY_ALIVE notification received
6412 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6414 * The 4965 "initialize" ALIVE reply contains calibration data for:
6415 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6416 * (3945 does not contain this data).
6418 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6420 static void iwl_init_alive_start(struct iwl_priv
*priv
)
6422 /* Check alive response for "valid" sign from uCode */
6423 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
6424 /* We had an error bringing up the hardware, so take it
6425 * all the way back down so we can try again */
6426 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6430 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6431 * This is a paranoid check, because we would not have gotten the
6432 * "initialize" alive if code weren't properly loaded. */
6433 if (iwl_verify_ucode(priv
)) {
6434 /* Runtime instruction load was bad;
6435 * take it all the way back down so we can try again */
6436 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6440 /* Calculate temperature */
6441 priv
->temperature
= iwl4965_get_temperature(priv
);
6443 /* Send pointers to protocol/runtime uCode image ... init code will
6444 * load and launch runtime uCode, which will send us another "Alive"
6446 IWL_DEBUG_INFO("Initialization Alive received.\n");
6447 if (iwl_set_ucode_ptrs(priv
)) {
6448 /* Runtime instruction load won't happen;
6449 * take it all the way back down so we can try again */
6450 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6456 queue_work(priv
->workqueue
, &priv
->restart
);
6461 * iwl_alive_start - called after REPLY_ALIVE notification received
6462 * from protocol/runtime uCode (initialization uCode's
6463 * Alive gets handled by iwl_init_alive_start()).
6465 static void iwl_alive_start(struct iwl_priv
*priv
)
6469 IWL_DEBUG_INFO("Runtime Alive received.\n");
6471 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
6472 /* We had an error bringing up the hardware, so take it
6473 * all the way back down so we can try again */
6474 IWL_DEBUG_INFO("Alive failed.\n");
6478 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6479 * This is a paranoid check, because we would not have gotten the
6480 * "runtime" alive if code weren't properly loaded. */
6481 if (iwl_verify_ucode(priv
)) {
6482 /* Runtime instruction load was bad;
6483 * take it all the way back down so we can try again */
6484 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6488 iwl_clear_stations_table(priv
);
6490 rc
= iwl4965_alive_notify(priv
);
6492 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6497 /* After the ALIVE response, we can process host commands */
6498 set_bit(STATUS_ALIVE
, &priv
->status
);
6500 /* Clear out the uCode error bit if it is set */
6501 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
6503 rc
= iwl_init_channel_map(priv
);
6505 IWL_ERROR("initializing regulatory failed: %d\n", rc
);
6509 iwl_init_geos(priv
);
6511 if (iwl_is_rfkill(priv
))
6514 if (!priv
->mac80211_registered
) {
6515 /* Unlock so any user space entry points can call back into
6516 * the driver without a deadlock... */
6517 mutex_unlock(&priv
->mutex
);
6518 iwl_rate_control_register(priv
->hw
);
6519 rc
= ieee80211_register_hw(priv
->hw
);
6520 priv
->hw
->conf
.beacon_int
= 100;
6521 mutex_lock(&priv
->mutex
);
6524 iwl_rate_control_unregister(priv
->hw
);
6525 IWL_ERROR("Failed to register network "
6526 "device (error %d)\n", rc
);
6530 priv
->mac80211_registered
= 1;
6532 iwl_reset_channel_flag(priv
);
6534 ieee80211_start_queues(priv
->hw
);
6536 priv
->active_rate
= priv
->rates_mask
;
6537 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
6539 iwl_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
6541 if (iwl_is_associated(priv
)) {
6542 struct iwl_rxon_cmd
*active_rxon
=
6543 (struct iwl_rxon_cmd
*)(&priv
->active_rxon
);
6545 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
6546 sizeof(priv
->staging_rxon
));
6547 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6549 /* Initialize our rx_config data */
6550 iwl_connection_init_rx_config(priv
);
6551 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
6554 /* Configure BT coexistence */
6555 iwl_send_bt_config(priv
);
6557 /* Configure the adapter for unassociated operation */
6558 iwl_commit_rxon(priv
);
6560 /* At this point, the NIC is initialized and operational */
6561 priv
->notif_missed_beacons
= 0;
6562 set_bit(STATUS_READY
, &priv
->status
);
6564 iwl4965_rf_kill_ct_config(priv
);
6565 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6567 if (priv
->error_recovering
)
6568 iwl_error_recovery(priv
);
6573 queue_work(priv
->workqueue
, &priv
->restart
);
6576 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
6578 static void __iwl_down(struct iwl_priv
*priv
)
6580 unsigned long flags
;
6581 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6582 struct ieee80211_conf
*conf
= NULL
;
6584 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
6586 conf
= ieee80211_get_hw_conf(priv
->hw
);
6589 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6591 iwl_clear_stations_table(priv
);
6593 /* Unblock any waiting calls */
6594 wake_up_interruptible_all(&priv
->wait_command_queue
);
6596 /* Wipe out the EXIT_PENDING status bit if we are not actually
6597 * exiting the module */
6599 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6601 /* stop and reset the on-board processor */
6602 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
6604 /* tell the device to stop sending interrupts */
6605 iwl_disable_interrupts(priv
);
6607 if (priv
->mac80211_registered
)
6608 ieee80211_stop_queues(priv
->hw
);
6610 /* If we have not previously called iwl_init() then
6611 * clear all bits but the RF Kill and SUSPEND bits and return */
6612 if (!iwl_is_init(priv
)) {
6613 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6615 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6617 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6622 /* ...otherwise clear out all the status bits but the RF Kill and
6623 * SUSPEND bits and continue taking the NIC down. */
6624 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6626 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6628 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6630 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
6633 spin_lock_irqsave(&priv
->lock
, flags
);
6634 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
6635 spin_unlock_irqrestore(&priv
->lock
, flags
);
6637 iwl_hw_txq_ctx_stop(priv
);
6638 iwl_hw_rxq_stop(priv
);
6640 spin_lock_irqsave(&priv
->lock
, flags
);
6641 if (!iwl_grab_restricted_access(priv
)) {
6642 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
6643 APMG_CLK_VAL_DMA_CLK_RQT
);
6644 iwl_release_restricted_access(priv
);
6646 spin_unlock_irqrestore(&priv
->lock
, flags
);
6650 iwl_hw_nic_stop_master(priv
);
6651 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
6652 iwl_hw_nic_reset(priv
);
6655 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
6657 if (priv
->ibss_beacon
)
6658 dev_kfree_skb(priv
->ibss_beacon
);
6659 priv
->ibss_beacon
= NULL
;
6661 /* clear out any free frames */
6662 iwl_clear_free_frames(priv
);
6665 static void iwl_down(struct iwl_priv
*priv
)
6667 mutex_lock(&priv
->mutex
);
6669 mutex_unlock(&priv
->mutex
);
6671 iwl_cancel_deferred_work(priv
);
6674 #define MAX_HW_RESTARTS 5
6676 static int __iwl_up(struct iwl_priv
*priv
)
6678 DECLARE_MAC_BUF(mac
);
6682 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6683 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6687 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
6688 IWL_WARNING("Radio disabled by SW RF kill (module "
6693 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
6694 IWL_ERROR("ucode not available for device bringup\n");
6698 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6700 rc
= iwl_hw_nic_init(priv
);
6702 IWL_ERROR("Unable to int nic\n");
6706 /* make sure rfkill handshake bits are cleared */
6707 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6708 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
6709 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
6711 /* clear (again), then enable host interrupts */
6712 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6713 iwl_enable_interrupts(priv
);
6715 /* really make sure rfkill handshake bits are cleared */
6716 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6717 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6719 /* Copy original ucode data image from disk into backup cache.
6720 * This will be used to initialize the on-board processor's
6721 * data SRAM for a clean start when the runtime program first loads. */
6722 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
6723 priv
->ucode_data
.len
);
6725 /* If platform's RF_KILL switch is set to KILL,
6726 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6727 * and getting things started */
6728 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
6729 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
6732 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) || hw_rf_kill
) {
6733 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6737 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
6739 iwl_clear_stations_table(priv
);
6741 /* load bootstrap state machine,
6742 * load bootstrap program into processor's memory,
6743 * prepare to load the "initialize" uCode */
6744 rc
= iwl_load_bsm(priv
);
6747 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc
);
6751 /* start card; "initialize" will load runtime ucode */
6752 iwl_nic_start(priv
);
6754 /* MAC Address location in EEPROM same for 3945/4965 */
6755 get_eeprom_mac(priv
, priv
->mac_addr
);
6756 IWL_DEBUG_INFO("MAC address: %s\n",
6757 print_mac(mac
, priv
->mac_addr
));
6759 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
6761 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
6766 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6769 /* tried to restart and config the device for as long as our
6770 * patience could withstand */
6771 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
6776 /*****************************************************************************
6778 * Workqueue callbacks
6780 *****************************************************************************/
6782 static void iwl_bg_init_alive_start(struct work_struct
*data
)
6784 struct iwl_priv
*priv
=
6785 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
6787 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6790 mutex_lock(&priv
->mutex
);
6791 iwl_init_alive_start(priv
);
6792 mutex_unlock(&priv
->mutex
);
6795 static void iwl_bg_alive_start(struct work_struct
*data
)
6797 struct iwl_priv
*priv
=
6798 container_of(data
, struct iwl_priv
, alive_start
.work
);
6800 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6803 mutex_lock(&priv
->mutex
);
6804 iwl_alive_start(priv
);
6805 mutex_unlock(&priv
->mutex
);
6808 static void iwl_bg_rf_kill(struct work_struct
*work
)
6810 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
6812 wake_up_interruptible(&priv
->wait_command_queue
);
6814 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6817 mutex_lock(&priv
->mutex
);
6819 if (!iwl_is_rfkill(priv
)) {
6820 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
6821 "HW and/or SW RF Kill no longer active, restarting "
6823 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6824 queue_work(priv
->workqueue
, &priv
->restart
);
6827 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
6828 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6829 "disabled by SW switch\n");
6831 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6832 "Kill switch must be turned off for "
6833 "wireless networking to work.\n");
6835 mutex_unlock(&priv
->mutex
);
6838 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6840 static void iwl_bg_scan_check(struct work_struct
*data
)
6842 struct iwl_priv
*priv
=
6843 container_of(data
, struct iwl_priv
, scan_check
.work
);
6845 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6848 mutex_lock(&priv
->mutex
);
6849 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
6850 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6851 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
6852 "Scan completion watchdog resetting adapter (%dms)\n",
6853 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
6855 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6856 iwl_send_scan_abort(priv
);
6858 mutex_unlock(&priv
->mutex
);
6861 static void iwl_bg_request_scan(struct work_struct
*data
)
6863 struct iwl_priv
*priv
=
6864 container_of(data
, struct iwl_priv
, request_scan
);
6865 struct iwl_host_cmd cmd
= {
6866 .id
= REPLY_SCAN_CMD
,
6867 .len
= sizeof(struct iwl_scan_cmd
),
6868 .meta
.flags
= CMD_SIZE_HUGE
,
6871 struct iwl_scan_cmd
*scan
;
6872 struct ieee80211_conf
*conf
= NULL
;
6876 conf
= ieee80211_get_hw_conf(priv
->hw
);
6878 mutex_lock(&priv
->mutex
);
6880 if (!iwl_is_ready(priv
)) {
6881 IWL_WARNING("request scan called when driver not ready.\n");
6885 /* Make sure the scan wasn't cancelled before this queued work
6886 * was given the chance to run... */
6887 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
6890 /* This should never be called or scheduled if there is currently
6891 * a scan active in the hardware. */
6892 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
6893 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6894 "Ignoring second request.\n");
6899 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6900 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6904 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6905 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6909 if (iwl_is_rfkill(priv
)) {
6910 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6914 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6915 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6919 if (!priv
->scan_bands
) {
6920 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6925 priv
->scan
= kmalloc(sizeof(struct iwl_scan_cmd
) +
6926 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
6933 memset(scan
, 0, sizeof(struct iwl_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
6935 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
6936 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
6938 if (iwl_is_associated(priv
)) {
6941 u32 suspend_time
= 100;
6942 u32 scan_suspend_time
= 100;
6943 unsigned long flags
;
6945 IWL_DEBUG_INFO("Scanning while associated...\n");
6947 spin_lock_irqsave(&priv
->lock
, flags
);
6948 interval
= priv
->beacon_int
;
6949 spin_unlock_irqrestore(&priv
->lock
, flags
);
6951 scan
->suspend_time
= 0;
6952 scan
->max_out_time
= cpu_to_le32(200 * 1024);
6954 interval
= suspend_time
;
6956 extra
= (suspend_time
/ interval
) << 22;
6957 scan_suspend_time
= (extra
|
6958 ((suspend_time
% interval
) * 1024));
6959 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
6960 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6961 scan_suspend_time
, interval
);
6964 /* We should add the ability for user to lock to PASSIVE ONLY */
6965 if (priv
->one_direct_scan
) {
6967 ("Kicking off one direct scan for '%s'\n",
6968 iwl_escape_essid(priv
->direct_ssid
,
6969 priv
->direct_ssid_len
));
6970 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6971 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
6972 memcpy(scan
->direct_scan
[0].ssid
,
6973 priv
->direct_ssid
, priv
->direct_ssid_len
);
6975 } else if (!iwl_is_associated(priv
) && priv
->essid_len
) {
6976 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6977 scan
->direct_scan
[0].len
= priv
->essid_len
;
6978 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
6983 /* We don't build a direct scan probe request; the uCode will do
6984 * that based on the direct_mask added to each channel entry */
6985 scan
->tx_cmd
.len
= cpu_to_le16(
6986 iwl_fill_probe_req(priv
, (struct ieee80211_mgmt
*)scan
->data
,
6987 IWL_MAX_SCAN_SIZE
- sizeof(scan
), 0));
6988 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6989 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6990 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6992 /* flags + rate selection */
6994 scan
->tx_cmd
.tx_flags
|= cpu_to_le32(0x200);
6996 switch (priv
->scan_bands
) {
6998 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6999 scan
->tx_cmd
.rate_n_flags
=
7000 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
7001 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
7003 scan
->good_CRC_th
= 0;
7004 phymode
= MODE_IEEE80211G
;
7008 scan
->tx_cmd
.rate_n_flags
=
7009 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
7010 RATE_MCS_ANT_B_MSK
);
7011 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
7012 phymode
= MODE_IEEE80211A
;
7016 IWL_WARNING("Invalid scan band count\n");
7020 /* select Rx chains */
7022 /* Force use of chains B and C (0x6) for scan Rx.
7023 * Avoid A (0x1) because of its off-channel reception on A-band.
7024 * MIMO is not used here, but value is required to make uCode happy. */
7025 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
7026 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
7027 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
7028 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
7030 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
7031 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
7035 ("Initiating direct scan for %s.\n",
7036 iwl_escape_essid(priv
->essid
, priv
->essid_len
));
7038 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7040 scan
->channel_count
=
7041 iwl_get_channels_for_scan(
7042 priv
, phymode
, 1, /* active */
7044 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
7046 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
7047 scan
->channel_count
* sizeof(struct iwl_scan_channel
);
7049 scan
->len
= cpu_to_le16(cmd
.len
);
7051 set_bit(STATUS_SCAN_HW
, &priv
->status
);
7052 rc
= iwl_send_cmd_sync(priv
, &cmd
);
7056 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
7057 IWL_SCAN_CHECK_WATCHDOG
);
7059 mutex_unlock(&priv
->mutex
);
7063 /* inform mac80211 scan aborted */
7064 queue_work(priv
->workqueue
, &priv
->scan_completed
);
7065 mutex_unlock(&priv
->mutex
);
7068 static void iwl_bg_up(struct work_struct
*data
)
7070 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
7072 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7075 mutex_lock(&priv
->mutex
);
7077 mutex_unlock(&priv
->mutex
);
7080 static void iwl_bg_restart(struct work_struct
*data
)
7082 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
7084 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7088 queue_work(priv
->workqueue
, &priv
->up
);
7091 static void iwl_bg_rx_replenish(struct work_struct
*data
)
7093 struct iwl_priv
*priv
=
7094 container_of(data
, struct iwl_priv
, rx_replenish
);
7096 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7099 mutex_lock(&priv
->mutex
);
7100 iwl_rx_replenish(priv
);
7101 mutex_unlock(&priv
->mutex
);
7104 static void iwl_bg_post_associate(struct work_struct
*data
)
7106 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
7107 post_associate
.work
);
7110 struct ieee80211_conf
*conf
= NULL
;
7111 DECLARE_MAC_BUF(mac
);
7113 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7114 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
7118 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7120 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
7123 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7126 mutex_lock(&priv
->mutex
);
7128 if (!priv
->interface_id
|| !priv
->is_open
) {
7129 mutex_unlock(&priv
->mutex
);
7132 iwl_scan_cancel_timeout(priv
, 200);
7134 conf
= ieee80211_get_hw_conf(priv
->hw
);
7136 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7137 iwl_commit_rxon(priv
);
7139 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7140 iwl_setup_rxon_timing(priv
);
7141 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7142 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7144 IWL_WARNING("REPLY_RXON_TIMING failed - "
7145 "Attempting to continue.\n");
7147 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7149 #ifdef CONFIG_IWLWIFI_HT
7150 if (priv
->is_ht_enabled
&& priv
->current_assoc_ht
.is_ht
)
7151 iwl4965_set_rxon_ht(priv
, &priv
->current_assoc_ht
);
7153 priv
->active_rate_ht
[0] = 0;
7154 priv
->active_rate_ht
[1] = 0;
7155 priv
->current_channel_width
= IWL_CHANNEL_WIDTH_20MHZ
;
7157 #endif /* CONFIG_IWLWIFI_HT*/
7158 iwl4965_set_rxon_chain(priv
);
7159 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7161 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7162 priv
->assoc_id
, priv
->beacon_int
);
7164 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7165 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
7167 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7169 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7170 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7171 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
7173 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7175 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7176 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7180 iwl_commit_rxon(priv
);
7182 switch (priv
->iw_mode
) {
7183 case IEEE80211_IF_TYPE_STA
:
7184 iwl_rate_scale_init(priv
->hw
, IWL_AP_ID
);
7187 case IEEE80211_IF_TYPE_IBSS
:
7189 /* clear out the station table */
7190 iwl_clear_stations_table(priv
);
7192 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7193 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
7194 iwl_rate_scale_init(priv
->hw
, IWL_STA_ID
);
7195 iwl_send_beacon_cmd(priv
);
7200 IWL_ERROR("%s Should not be called in %d mode\n",
7201 __FUNCTION__
, priv
->iw_mode
);
7205 iwl_sequence_reset(priv
);
7207 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7208 /* Enable Rx differential gain and sensitivity calibrations */
7209 iwl4965_chain_noise_reset(priv
);
7210 priv
->start_calib
= 1;
7211 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7213 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7214 priv
->assoc_station_added
= 1;
7216 #ifdef CONFIG_IWLWIFI_QOS
7217 iwl_activate_qos(priv
, 0);
7218 #endif /* CONFIG_IWLWIFI_QOS */
7219 mutex_unlock(&priv
->mutex
);
7222 static void iwl_bg_abort_scan(struct work_struct
*work
)
7224 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, abort_scan
);
7226 if (!iwl_is_ready(priv
))
7229 mutex_lock(&priv
->mutex
);
7231 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
7232 iwl_send_scan_abort(priv
);
7234 mutex_unlock(&priv
->mutex
);
7237 static void iwl_bg_scan_completed(struct work_struct
*work
)
7239 struct iwl_priv
*priv
=
7240 container_of(work
, struct iwl_priv
, scan_completed
);
7242 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
7244 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7247 ieee80211_scan_completed(priv
->hw
);
7249 /* Since setting the TXPOWER may have been deferred while
7250 * performing the scan, fire one off */
7251 mutex_lock(&priv
->mutex
);
7252 iwl_hw_reg_send_txpower(priv
);
7253 mutex_unlock(&priv
->mutex
);
7256 /*****************************************************************************
7258 * mac80211 entry point functions
7260 *****************************************************************************/
7262 static int iwl_mac_start(struct ieee80211_hw
*hw
)
7264 struct iwl_priv
*priv
= hw
->priv
;
7266 IWL_DEBUG_MAC80211("enter\n");
7268 /* we should be verifying the device is ready to be opened */
7269 mutex_lock(&priv
->mutex
);
7273 if (!iwl_is_rfkill(priv
))
7274 ieee80211_start_queues(priv
->hw
);
7276 mutex_unlock(&priv
->mutex
);
7277 IWL_DEBUG_MAC80211("leave\n");
7281 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
7283 struct iwl_priv
*priv
= hw
->priv
;
7285 IWL_DEBUG_MAC80211("enter\n");
7288 mutex_lock(&priv
->mutex
);
7289 /* stop mac, cancel any scan request and clear
7290 * RXON_FILTER_ASSOC_MSK BIT
7293 iwl_scan_cancel_timeout(priv
, 100);
7294 cancel_delayed_work(&priv
->post_associate
);
7295 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7296 iwl_commit_rxon(priv
);
7297 mutex_unlock(&priv
->mutex
);
7299 IWL_DEBUG_MAC80211("leave\n");
7302 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7303 struct ieee80211_tx_control
*ctl
)
7305 struct iwl_priv
*priv
= hw
->priv
;
7307 IWL_DEBUG_MAC80211("enter\n");
7309 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
7310 IWL_DEBUG_MAC80211("leave - monitor\n");
7314 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
7317 if (iwl_tx_skb(priv
, skb
, ctl
))
7318 dev_kfree_skb_any(skb
);
7320 IWL_DEBUG_MAC80211("leave\n");
7324 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
7325 struct ieee80211_if_init_conf
*conf
)
7327 struct iwl_priv
*priv
= hw
->priv
;
7328 unsigned long flags
;
7329 DECLARE_MAC_BUF(mac
);
7331 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf
->if_id
, conf
->type
);
7333 if (priv
->interface_id
) {
7334 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7338 spin_lock_irqsave(&priv
->lock
, flags
);
7339 priv
->interface_id
= conf
->if_id
;
7341 spin_unlock_irqrestore(&priv
->lock
, flags
);
7343 mutex_lock(&priv
->mutex
);
7345 if (conf
->mac_addr
) {
7346 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac
, conf
->mac_addr
));
7347 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
7349 iwl_set_mode(priv
, conf
->type
);
7351 IWL_DEBUG_MAC80211("leave\n");
7352 mutex_unlock(&priv
->mutex
);
7358 * iwl_mac_config - mac80211 config callback
7360 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7361 * be set inappropriately and the driver currently sets the hardware up to
7362 * use it whenever needed.
7364 static int iwl_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
7366 struct iwl_priv
*priv
= hw
->priv
;
7367 const struct iwl_channel_info
*ch_info
;
7368 unsigned long flags
;
7370 mutex_lock(&priv
->mutex
);
7371 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
);
7373 if (!iwl_is_ready(priv
)) {
7374 IWL_DEBUG_MAC80211("leave - not ready\n");
7375 mutex_unlock(&priv
->mutex
);
7379 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7380 * what is exposed through include/ declarations */
7381 if (unlikely(!iwl_param_disable_hw_scan
&&
7382 test_bit(STATUS_SCANNING
, &priv
->status
))) {
7383 IWL_DEBUG_MAC80211("leave - scanning\n");
7384 mutex_unlock(&priv
->mutex
);
7388 spin_lock_irqsave(&priv
->lock
, flags
);
7390 ch_info
= iwl_get_channel_info(priv
, conf
->phymode
, conf
->channel
);
7391 if (!is_channel_valid(ch_info
)) {
7392 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7393 conf
->channel
, conf
->phymode
);
7394 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7395 spin_unlock_irqrestore(&priv
->lock
, flags
);
7396 mutex_unlock(&priv
->mutex
);
7400 #ifdef CONFIG_IWLWIFI_HT
7401 /* if we are switching fron ht to 2.4 clear flags
7402 * from any ht related info since 2.4 does not
7404 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
)
7405 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7406 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
7409 priv
->staging_rxon
.flags
= 0;
7410 #endif /* CONFIG_IWLWIFI_HT */
7412 iwl_set_rxon_channel(priv
, conf
->phymode
, conf
->channel
);
7414 iwl_set_flags_for_phymode(priv
, conf
->phymode
);
7416 /* The list of supported rates and rate mask can be different
7417 * for each phymode; since the phymode may have changed, reset
7418 * the rate mask to what mac80211 lists */
7421 spin_unlock_irqrestore(&priv
->lock
, flags
);
7423 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7424 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
7425 iwl_hw_channel_switch(priv
, conf
->channel
);
7426 mutex_unlock(&priv
->mutex
);
7431 iwl_radio_kill_sw(priv
, !conf
->radio_enabled
);
7433 if (!conf
->radio_enabled
) {
7434 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7435 mutex_unlock(&priv
->mutex
);
7439 if (iwl_is_rfkill(priv
)) {
7440 IWL_DEBUG_MAC80211("leave - RF kill\n");
7441 mutex_unlock(&priv
->mutex
);
7447 if (memcmp(&priv
->active_rxon
,
7448 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
7449 iwl_commit_rxon(priv
);
7451 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7453 IWL_DEBUG_MAC80211("leave\n");
7455 mutex_unlock(&priv
->mutex
);
7460 static void iwl_config_ap(struct iwl_priv
*priv
)
7464 if (priv
->status
& STATUS_EXIT_PENDING
)
7467 /* The following should be done only at AP bring up */
7468 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
7470 /* RXON - unassoc (to set timing command) */
7471 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7472 iwl_commit_rxon(priv
);
7475 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7476 iwl_setup_rxon_timing(priv
);
7477 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7478 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7480 IWL_WARNING("REPLY_RXON_TIMING failed - "
7481 "Attempting to continue.\n");
7483 iwl4965_set_rxon_chain(priv
);
7485 /* FIXME: what should be the assoc_id for AP? */
7486 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7487 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7488 priv
->staging_rxon
.flags
|=
7489 RXON_FLG_SHORT_PREAMBLE_MSK
;
7491 priv
->staging_rxon
.flags
&=
7492 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7494 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7495 if (priv
->assoc_capability
&
7496 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7497 priv
->staging_rxon
.flags
|=
7498 RXON_FLG_SHORT_SLOT_MSK
;
7500 priv
->staging_rxon
.flags
&=
7501 ~RXON_FLG_SHORT_SLOT_MSK
;
7503 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7504 priv
->staging_rxon
.flags
&=
7505 ~RXON_FLG_SHORT_SLOT_MSK
;
7507 /* restore RXON assoc */
7508 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7509 iwl_commit_rxon(priv
);
7510 #ifdef CONFIG_IWLWIFI_QOS
7511 iwl_activate_qos(priv
, 1);
7513 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7515 iwl_send_beacon_cmd(priv
);
7517 /* FIXME - we need to add code here to detect a totally new
7518 * configuration, reset the AP, unassoc, rxon timing, assoc,
7519 * clear sta table, add BCAST sta... */
7522 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
, int if_id
,
7523 struct ieee80211_if_conf
*conf
)
7525 struct iwl_priv
*priv
= hw
->priv
;
7526 DECLARE_MAC_BUF(mac
);
7527 unsigned long flags
;
7533 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
7534 (!conf
->beacon
|| !conf
->ssid_len
)) {
7536 ("Leaving in AP mode because HostAPD is not ready.\n");
7540 mutex_lock(&priv
->mutex
);
7542 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id
);
7544 IWL_DEBUG_MAC80211("bssid: %s\n",
7545 print_mac(mac
, conf
->bssid
));
7548 * very dubious code was here; the probe filtering flag is never set:
7550 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7551 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7553 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
7554 IWL_DEBUG_MAC80211("leave - scanning\n");
7555 mutex_unlock(&priv
->mutex
);
7559 if (priv
->interface_id
!= if_id
) {
7560 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7561 mutex_unlock(&priv
->mutex
);
7565 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7567 conf
->bssid
= priv
->mac_addr
;
7568 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
7569 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7570 print_mac(mac
, conf
->bssid
));
7572 if (priv
->ibss_beacon
)
7573 dev_kfree_skb(priv
->ibss_beacon
);
7575 priv
->ibss_beacon
= conf
->beacon
;
7578 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
7579 !is_multicast_ether_addr(conf
->bssid
)) {
7580 /* If there is currently a HW scan going on in the background
7581 * then we need to cancel it else the RXON below will fail. */
7582 if (iwl_scan_cancel_timeout(priv
, 100)) {
7583 IWL_WARNING("Aborted scan still in progress "
7585 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7586 mutex_unlock(&priv
->mutex
);
7589 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
7591 /* TODO: Audit driver for usage of these members and see
7592 * if mac80211 deprecates them (priv->bssid looks like it
7593 * shouldn't be there, but I haven't scanned the IBSS code
7594 * to verify) - jpk */
7595 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
7597 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7598 iwl_config_ap(priv
);
7600 rc
= iwl_commit_rxon(priv
);
7601 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
7602 iwl_rxon_add_station(
7603 priv
, priv
->active_rxon
.bssid_addr
, 1);
7607 iwl_scan_cancel_timeout(priv
, 100);
7608 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7609 iwl_commit_rxon(priv
);
7612 spin_lock_irqsave(&priv
->lock
, flags
);
7613 if (!conf
->ssid_len
)
7614 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7616 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
7618 priv
->essid_len
= conf
->ssid_len
;
7619 spin_unlock_irqrestore(&priv
->lock
, flags
);
7621 IWL_DEBUG_MAC80211("leave\n");
7622 mutex_unlock(&priv
->mutex
);
7627 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
7628 unsigned int changed_flags
,
7629 unsigned int *total_flags
,
7630 int mc_count
, struct dev_addr_list
*mc_list
)
7634 * see also iwl_connection_init_rx_config
7639 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
7640 struct ieee80211_if_init_conf
*conf
)
7642 struct iwl_priv
*priv
= hw
->priv
;
7644 IWL_DEBUG_MAC80211("enter\n");
7646 mutex_lock(&priv
->mutex
);
7648 iwl_scan_cancel_timeout(priv
, 100);
7649 cancel_delayed_work(&priv
->post_associate
);
7650 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7651 iwl_commit_rxon(priv
);
7653 if (priv
->interface_id
== conf
->if_id
) {
7654 priv
->interface_id
= 0;
7655 memset(priv
->bssid
, 0, ETH_ALEN
);
7656 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7657 priv
->essid_len
= 0;
7659 mutex_unlock(&priv
->mutex
);
7661 IWL_DEBUG_MAC80211("leave\n");
7664 static void iwl_mac_erp_ie_changed(struct ieee80211_hw
*hw
,
7665 u8 changes
, int cts_protection
, int preamble
)
7668 struct iwl_priv
*priv
= hw
->priv
;
7670 if (changes
& IEEE80211_ERP_CHANGE_PREAMBLE
) {
7671 if (preamble
== WLAN_ERP_PREAMBLE_SHORT
)
7672 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
7674 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7677 if (changes
& IEEE80211_ERP_CHANGE_PROTECTION
) {
7679 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
7681 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
7684 if (iwl_is_associated(priv
))
7685 iwl_send_rxon_assoc(priv
);
7688 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7689 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
7692 unsigned long flags
;
7693 struct iwl_priv
*priv
= hw
->priv
;
7695 IWL_DEBUG_MAC80211("enter\n");
7697 mutex_lock(&priv
->mutex
);
7698 spin_lock_irqsave(&priv
->lock
, flags
);
7700 if (!iwl_is_ready_rf(priv
)) {
7702 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7706 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
7708 IWL_ERROR("ERROR: APs don't scan\n");
7712 /* if we just finished scan ask for delay */
7713 if (priv
->last_scan_jiffies
&&
7714 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
,
7720 IWL_DEBUG_SCAN("direct scan for "
7722 iwl_escape_essid(ssid
, len
), (int)len
);
7724 priv
->one_direct_scan
= 1;
7725 priv
->direct_ssid_len
= (u8
)
7726 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
7727 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
7729 priv
->one_direct_scan
= 0;
7731 rc
= iwl_scan_initiate(priv
);
7733 IWL_DEBUG_MAC80211("leave\n");
7736 spin_unlock_irqrestore(&priv
->lock
, flags
);
7737 mutex_unlock(&priv
->mutex
);
7742 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
7743 const u8
*local_addr
, const u8
*addr
,
7744 struct ieee80211_key_conf
*key
)
7746 struct iwl_priv
*priv
= hw
->priv
;
7747 DECLARE_MAC_BUF(mac
);
7751 IWL_DEBUG_MAC80211("enter\n");
7753 if (!iwl_param_hwcrypto
) {
7754 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7758 if (is_zero_ether_addr(addr
))
7759 /* only support pairwise keys */
7762 sta_id
= iwl_hw_find_station(priv
, addr
);
7763 if (sta_id
== IWL_INVALID_STATION
) {
7764 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7765 print_mac(mac
, addr
));
7769 mutex_lock(&priv
->mutex
);
7771 iwl_scan_cancel_timeout(priv
, 100);
7775 rc
= iwl_update_sta_key_info(priv
, key
, sta_id
);
7777 iwl_set_rxon_hwcrypto(priv
, 1);
7778 iwl_commit_rxon(priv
);
7779 key
->hw_key_idx
= sta_id
;
7780 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7781 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
7785 rc
= iwl_clear_sta_key_info(priv
, sta_id
);
7787 iwl_set_rxon_hwcrypto(priv
, 0);
7788 iwl_commit_rxon(priv
);
7789 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7796 IWL_DEBUG_MAC80211("leave\n");
7797 mutex_unlock(&priv
->mutex
);
7802 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7803 const struct ieee80211_tx_queue_params
*params
)
7805 struct iwl_priv
*priv
= hw
->priv
;
7806 #ifdef CONFIG_IWLWIFI_QOS
7807 unsigned long flags
;
7809 #endif /* CONFIG_IWL_QOS */
7811 IWL_DEBUG_MAC80211("enter\n");
7813 if (!iwl_is_ready_rf(priv
)) {
7814 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7818 if (queue
>= AC_NUM
) {
7819 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7823 #ifdef CONFIG_IWLWIFI_QOS
7824 if (!priv
->qos_data
.qos_enable
) {
7825 priv
->qos_data
.qos_active
= 0;
7826 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7829 q
= AC_NUM
- 1 - queue
;
7831 spin_lock_irqsave(&priv
->lock
, flags
);
7833 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7834 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7835 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7836 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7837 cpu_to_le16((params
->burst_time
* 100));
7839 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7840 priv
->qos_data
.qos_active
= 1;
7842 spin_unlock_irqrestore(&priv
->lock
, flags
);
7844 mutex_lock(&priv
->mutex
);
7845 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7846 iwl_activate_qos(priv
, 1);
7847 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7848 iwl_activate_qos(priv
, 0);
7850 mutex_unlock(&priv
->mutex
);
7852 #endif /*CONFIG_IWLWIFI_QOS */
7854 IWL_DEBUG_MAC80211("leave\n");
7858 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7859 struct ieee80211_tx_queue_stats
*stats
)
7861 struct iwl_priv
*priv
= hw
->priv
;
7863 struct iwl_tx_queue
*txq
;
7864 struct iwl_queue
*q
;
7865 unsigned long flags
;
7867 IWL_DEBUG_MAC80211("enter\n");
7869 if (!iwl_is_ready_rf(priv
)) {
7870 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7874 spin_lock_irqsave(&priv
->lock
, flags
);
7876 for (i
= 0; i
< AC_NUM
; i
++) {
7877 txq
= &priv
->txq
[i
];
7879 avail
= iwl_queue_space(q
);
7881 stats
->data
[i
].len
= q
->n_window
- avail
;
7882 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7883 stats
->data
[i
].count
= q
->n_window
;
7886 spin_unlock_irqrestore(&priv
->lock
, flags
);
7888 IWL_DEBUG_MAC80211("leave\n");
7893 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
7894 struct ieee80211_low_level_stats
*stats
)
7896 IWL_DEBUG_MAC80211("enter\n");
7897 IWL_DEBUG_MAC80211("leave\n");
7902 static u64
iwl_mac_get_tsf(struct ieee80211_hw
*hw
)
7904 IWL_DEBUG_MAC80211("enter\n");
7905 IWL_DEBUG_MAC80211("leave\n");
7910 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
7912 struct iwl_priv
*priv
= hw
->priv
;
7913 unsigned long flags
;
7915 mutex_lock(&priv
->mutex
);
7916 IWL_DEBUG_MAC80211("enter\n");
7918 priv
->lq_mngr
.lq_ready
= 0;
7919 #ifdef CONFIG_IWLWIFI_HT
7920 spin_lock_irqsave(&priv
->lock
, flags
);
7921 memset(&priv
->current_assoc_ht
, 0, sizeof(struct sta_ht_info
));
7922 spin_unlock_irqrestore(&priv
->lock
, flags
);
7923 #ifdef CONFIG_IWLWIFI_HT_AGG
7924 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7925 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7927 memset(&(priv
->lq_mngr
.agg_ctrl
), 0, sizeof(struct iwl_agg_control
));
7928 priv
->lq_mngr
.agg_ctrl
.tid_traffic_load_threshold
= 10;
7929 priv
->lq_mngr
.agg_ctrl
.ba_timeout
= 5000;
7930 priv
->lq_mngr
.agg_ctrl
.auto_agg
= 1;
7932 if (priv
->lq_mngr
.agg_ctrl
.auto_agg
)
7933 priv
->lq_mngr
.agg_ctrl
.requested_ba
= TID_ALL_ENABLED
;
7934 #endif /*CONFIG_IWLWIFI_HT_AGG */
7935 #endif /* CONFIG_IWLWIFI_HT */
7937 #ifdef CONFIG_IWLWIFI_QOS
7938 iwl_reset_qos(priv
);
7941 cancel_delayed_work(&priv
->post_associate
);
7943 spin_lock_irqsave(&priv
->lock
, flags
);
7945 priv
->assoc_capability
= 0;
7946 priv
->call_post_assoc_from_beacon
= 0;
7947 priv
->assoc_station_added
= 0;
7949 /* new association get rid of ibss beacon skb */
7950 if (priv
->ibss_beacon
)
7951 dev_kfree_skb(priv
->ibss_beacon
);
7953 priv
->ibss_beacon
= NULL
;
7955 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7956 priv
->timestamp1
= 0;
7957 priv
->timestamp0
= 0;
7958 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7959 priv
->beacon_int
= 0;
7961 spin_unlock_irqrestore(&priv
->lock
, flags
);
7963 /* we are restarting association process
7964 * clear RXON_FILTER_ASSOC_MSK bit
7966 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
7967 iwl_scan_cancel_timeout(priv
, 100);
7968 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7969 iwl_commit_rxon(priv
);
7972 /* Per mac80211.h: This is only used in IBSS mode... */
7973 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7975 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7976 mutex_unlock(&priv
->mutex
);
7980 if (!iwl_is_ready_rf(priv
)) {
7981 IWL_DEBUG_MAC80211("leave - not ready\n");
7982 mutex_unlock(&priv
->mutex
);
7986 priv
->only_active_channel
= 0;
7990 mutex_unlock(&priv
->mutex
);
7992 IWL_DEBUG_MAC80211("leave\n");
7996 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7997 struct ieee80211_tx_control
*control
)
7999 struct iwl_priv
*priv
= hw
->priv
;
8000 unsigned long flags
;
8002 mutex_lock(&priv
->mutex
);
8003 IWL_DEBUG_MAC80211("enter\n");
8005 if (!iwl_is_ready_rf(priv
)) {
8006 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8007 mutex_unlock(&priv
->mutex
);
8011 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
8012 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8013 mutex_unlock(&priv
->mutex
);
8017 spin_lock_irqsave(&priv
->lock
, flags
);
8019 if (priv
->ibss_beacon
)
8020 dev_kfree_skb(priv
->ibss_beacon
);
8022 priv
->ibss_beacon
= skb
;
8026 IWL_DEBUG_MAC80211("leave\n");
8027 spin_unlock_irqrestore(&priv
->lock
, flags
);
8029 #ifdef CONFIG_IWLWIFI_QOS
8030 iwl_reset_qos(priv
);
8033 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8035 mutex_unlock(&priv
->mutex
);
8040 #ifdef CONFIG_IWLWIFI_HT
8043 u16 advanced_coding_cap
:1;
8044 u16 supported_chan_width_set
:1;
8045 u16 mimo_power_save_mode
:2;
8051 u16 beam_forming
:1;
8053 u16 maximal_amsdu_size
:1;
8054 u16 cck_mode_at_40MHz
:1;
8055 u16 psmp_support
:1;
8056 u16 stbc_ctrl_frame_support
:1;
8057 u16 sig_txop_protection_support
:1;
8060 } __attribute__ ((packed
));
8062 union ht_param_info
{
8064 u8 max_rx_ampdu_factor
:2;
8069 } __attribute__ ((packed
));
8071 union ht_exra_param_info
{
8073 u8 ext_chan_offset
:2;
8074 u8 tx_chan_width
:1;
8076 u8 controlled_access_only
:1;
8077 u8 service_interval_granularity
:3;
8080 } __attribute__ ((packed
));
8082 union ht_operation_mode
{
8089 } __attribute__ ((packed
));
8092 static int sta_ht_info_init(struct ieee80211_ht_capability
*ht_cap
,
8093 struct ieee80211_ht_additional_info
*ht_extra
,
8094 struct sta_ht_info
*ht_info_ap
,
8095 struct sta_ht_info
*ht_info
)
8097 union ht_cap_info cap
;
8098 union ht_operation_mode op_mode
;
8099 union ht_param_info param_info
;
8100 union ht_exra_param_info extra_param_info
;
8102 IWL_DEBUG_MAC80211("enter: \n");
8105 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8110 cap
.val
= (u16
) le16_to_cpu(ht_cap
->capabilities_info
);
8111 param_info
.val
= ht_cap
->mac_ht_params_info
;
8114 ht_info
->sgf
|= 0x1;
8116 ht_info
->sgf
|= 0x2;
8117 ht_info
->is_green_field
= cap
.green_field
;
8118 ht_info
->max_amsdu_size
= cap
.maximal_amsdu_size
;
8119 ht_info
->supported_chan_width
= cap
.supported_chan_width_set
;
8120 ht_info
->tx_mimo_ps_mode
= cap
.mimo_power_save_mode
;
8121 memcpy(ht_info
->supp_rates
, ht_cap
->supported_mcs_set
, 16);
8123 ht_info
->ampdu_factor
= param_info
.max_rx_ampdu_factor
;
8124 ht_info
->mpdu_density
= param_info
.mpdu_density
;
8126 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8127 ht_cap
->supported_mcs_set
[0],
8128 ht_cap
->supported_mcs_set
[1]);
8131 ht_info
->control_channel
= ht_info_ap
->control_channel
;
8132 ht_info
->extension_chan_offset
=
8133 ht_info_ap
->extension_chan_offset
;
8134 ht_info
->tx_chan_width
= ht_info_ap
->tx_chan_width
;
8135 ht_info
->operating_mode
= ht_info_ap
->operating_mode
;
8139 extra_param_info
.val
= ht_extra
->ht_param
;
8140 ht_info
->control_channel
= ht_extra
->control_chan
;
8141 ht_info
->extension_chan_offset
=
8142 extra_param_info
.ext_chan_offset
;
8143 ht_info
->tx_chan_width
= extra_param_info
.tx_chan_width
;
8145 le16_to_cpu(ht_extra
->operation_mode
);
8146 ht_info
->operating_mode
= op_mode
.op_mode
;
8147 IWL_DEBUG_MAC80211("control channel %d\n",
8148 ht_extra
->control_chan
);
8153 IWL_DEBUG_MAC80211("leave\n");
8157 static int iwl_mac_conf_ht(struct ieee80211_hw
*hw
,
8158 struct ieee80211_ht_capability
*ht_cap
,
8159 struct ieee80211_ht_additional_info
*ht_extra
)
8161 struct iwl_priv
*priv
= hw
->priv
;
8164 IWL_DEBUG_MAC80211("enter: \n");
8166 rs
= sta_ht_info_init(ht_cap
, ht_extra
, NULL
, &priv
->current_assoc_ht
);
8167 iwl4965_set_rxon_chain(priv
);
8169 if (priv
&& priv
->assoc_id
&&
8170 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
8171 unsigned long flags
;
8173 spin_lock_irqsave(&priv
->lock
, flags
);
8174 if (priv
->beacon_int
)
8175 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8177 priv
->call_post_assoc_from_beacon
= 1;
8178 spin_unlock_irqrestore(&priv
->lock
, flags
);
8181 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8182 ht_extra
->control_chan
);
8187 static void iwl_set_ht_capab(struct ieee80211_hw
*hw
,
8188 struct ieee80211_ht_capability
*ht_cap
,
8191 union ht_cap_info cap
;
8192 union ht_param_info param_info
;
8194 memset(&cap
, 0, sizeof(union ht_cap_info
));
8195 memset(¶m_info
, 0, sizeof(union ht_param_info
));
8197 cap
.maximal_amsdu_size
= HT_IE_MAX_AMSDU_SIZE_4K
;
8198 cap
.green_field
= 1;
8201 cap
.supported_chan_width_set
= use_wide_chan
;
8202 cap
.mimo_power_save_mode
= 0x3;
8204 param_info
.max_rx_ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
8205 param_info
.mpdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
8206 ht_cap
->capabilities_info
= (__le16
) cpu_to_le16(cap
.val
);
8207 ht_cap
->mac_ht_params_info
= (u8
) param_info
.val
;
8209 ht_cap
->supported_mcs_set
[0] = 0xff;
8210 ht_cap
->supported_mcs_set
[1] = 0xff;
8211 ht_cap
->supported_mcs_set
[4] =
8212 (cap
.supported_chan_width_set
) ? 0x1: 0x0;
8215 static void iwl_mac_get_ht_capab(struct ieee80211_hw
*hw
,
8216 struct ieee80211_ht_capability
*ht_cap
)
8218 u8 use_wide_channel
= 1;
8219 struct iwl_priv
*priv
= hw
->priv
;
8221 IWL_DEBUG_MAC80211("enter: \n");
8222 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
8223 use_wide_channel
= 0;
8225 /* no fat tx allowed on 2.4GHZ */
8226 if (priv
->phymode
!= MODE_IEEE80211A
)
8227 use_wide_channel
= 0;
8229 iwl_set_ht_capab(hw
, ht_cap
, use_wide_channel
);
8230 IWL_DEBUG_MAC80211("leave: \n");
8232 #endif /*CONFIG_IWLWIFI_HT*/
8234 /*****************************************************************************
8238 *****************************************************************************/
8240 #ifdef CONFIG_IWLWIFI_DEBUG
8243 * The following adds a new attribute to the sysfs representation
8244 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8245 * used for controlling the debug level.
8247 * See the level definitions in iwl for details.
8250 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
8252 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
8254 static ssize_t
store_debug_level(struct device_driver
*d
,
8255 const char *buf
, size_t count
)
8257 char *p
= (char *)buf
;
8260 val
= simple_strtoul(p
, &p
, 0);
8262 printk(KERN_INFO DRV_NAME
8263 ": %s is not in hex or decimal form.\n", buf
);
8265 iwl_debug_level
= val
;
8267 return strnlen(buf
, count
);
8270 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
8271 show_debug_level
, store_debug_level
);
8273 #endif /* CONFIG_IWLWIFI_DEBUG */
8275 static ssize_t
show_rf_kill(struct device
*d
,
8276 struct device_attribute
*attr
, char *buf
)
8279 * 0 - RF kill not enabled
8280 * 1 - SW based RF kill active (sysfs)
8281 * 2 - HW based RF kill active
8282 * 3 - Both HW and SW based RF kill active
8284 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8285 int val
= (test_bit(STATUS_RF_KILL_SW
, &priv
->status
) ? 0x1 : 0x0) |
8286 (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? 0x2 : 0x0);
8288 return sprintf(buf
, "%i\n", val
);
8291 static ssize_t
store_rf_kill(struct device
*d
,
8292 struct device_attribute
*attr
,
8293 const char *buf
, size_t count
)
8295 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8297 mutex_lock(&priv
->mutex
);
8298 iwl_radio_kill_sw(priv
, buf
[0] == '1');
8299 mutex_unlock(&priv
->mutex
);
8304 static DEVICE_ATTR(rf_kill
, S_IWUSR
| S_IRUGO
, show_rf_kill
, store_rf_kill
);
8306 static ssize_t
show_temperature(struct device
*d
,
8307 struct device_attribute
*attr
, char *buf
)
8309 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8311 if (!iwl_is_alive(priv
))
8314 return sprintf(buf
, "%d\n", iwl_hw_get_temperature(priv
));
8317 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
8319 static ssize_t
show_rs_window(struct device
*d
,
8320 struct device_attribute
*attr
,
8323 struct iwl_priv
*priv
= d
->driver_data
;
8324 return iwl_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
8326 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
8328 static ssize_t
show_tx_power(struct device
*d
,
8329 struct device_attribute
*attr
, char *buf
)
8331 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8332 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
8335 static ssize_t
store_tx_power(struct device
*d
,
8336 struct device_attribute
*attr
,
8337 const char *buf
, size_t count
)
8339 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8340 char *p
= (char *)buf
;
8343 val
= simple_strtoul(p
, &p
, 10);
8345 printk(KERN_INFO DRV_NAME
8346 ": %s is not in decimal form.\n", buf
);
8348 iwl_hw_reg_set_txpower(priv
, val
);
8353 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
8355 static ssize_t
show_flags(struct device
*d
,
8356 struct device_attribute
*attr
, char *buf
)
8358 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8360 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
8363 static ssize_t
store_flags(struct device
*d
,
8364 struct device_attribute
*attr
,
8365 const char *buf
, size_t count
)
8367 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8368 u32 flags
= simple_strtoul(buf
, NULL
, 0);
8370 mutex_lock(&priv
->mutex
);
8371 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
8372 /* Cancel any currently running scans... */
8373 if (iwl_scan_cancel_timeout(priv
, 100))
8374 IWL_WARNING("Could not cancel scan.\n");
8376 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8378 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
8379 iwl_commit_rxon(priv
);
8382 mutex_unlock(&priv
->mutex
);
8387 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
8389 static ssize_t
show_filter_flags(struct device
*d
,
8390 struct device_attribute
*attr
, char *buf
)
8392 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8394 return sprintf(buf
, "0x%04X\n",
8395 le32_to_cpu(priv
->active_rxon
.filter_flags
));
8398 static ssize_t
store_filter_flags(struct device
*d
,
8399 struct device_attribute
*attr
,
8400 const char *buf
, size_t count
)
8402 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8403 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
8405 mutex_lock(&priv
->mutex
);
8406 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
8407 /* Cancel any currently running scans... */
8408 if (iwl_scan_cancel_timeout(priv
, 100))
8409 IWL_WARNING("Could not cancel scan.\n");
8411 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8412 "0x%04X\n", filter_flags
);
8413 priv
->staging_rxon
.filter_flags
=
8414 cpu_to_le32(filter_flags
);
8415 iwl_commit_rxon(priv
);
8418 mutex_unlock(&priv
->mutex
);
8423 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
8424 store_filter_flags
);
8426 static ssize_t
show_tune(struct device
*d
,
8427 struct device_attribute
*attr
, char *buf
)
8429 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8431 return sprintf(buf
, "0x%04X\n",
8432 (priv
->phymode
<< 8) |
8433 le16_to_cpu(priv
->active_rxon
.channel
));
8436 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
);
8438 static ssize_t
store_tune(struct device
*d
,
8439 struct device_attribute
*attr
,
8440 const char *buf
, size_t count
)
8442 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8443 char *p
= (char *)buf
;
8444 u16 tune
= simple_strtoul(p
, &p
, 0);
8445 u8 phymode
= (tune
>> 8) & 0xff;
8446 u16 channel
= tune
& 0xff;
8448 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode
, channel
);
8450 mutex_lock(&priv
->mutex
);
8451 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
) ||
8452 (priv
->phymode
!= phymode
)) {
8453 const struct iwl_channel_info
*ch_info
;
8455 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
8457 IWL_WARNING("Requested invalid phymode/channel "
8458 "combination: %d %d\n", phymode
, channel
);
8459 mutex_unlock(&priv
->mutex
);
8463 /* Cancel any currently running scans... */
8464 if (iwl_scan_cancel_timeout(priv
, 100))
8465 IWL_WARNING("Could not cancel scan.\n");
8467 IWL_DEBUG_INFO("Committing phymode and "
8468 "rxon.channel = %d %d\n",
8471 iwl_set_rxon_channel(priv
, phymode
, channel
);
8472 iwl_set_flags_for_phymode(priv
, phymode
);
8475 iwl_commit_rxon(priv
);
8478 mutex_unlock(&priv
->mutex
);
8483 static DEVICE_ATTR(tune
, S_IWUSR
| S_IRUGO
, show_tune
, store_tune
);
8485 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8487 static ssize_t
show_measurement(struct device
*d
,
8488 struct device_attribute
*attr
, char *buf
)
8490 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8491 struct iwl_spectrum_notification measure_report
;
8492 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
8493 u8
*data
= (u8
*) & measure_report
;
8494 unsigned long flags
;
8496 spin_lock_irqsave(&priv
->lock
, flags
);
8497 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
8498 spin_unlock_irqrestore(&priv
->lock
, flags
);
8501 memcpy(&measure_report
, &priv
->measure_report
, size
);
8502 priv
->measurement_status
= 0;
8503 spin_unlock_irqrestore(&priv
->lock
, flags
);
8505 while (size
&& (PAGE_SIZE
- len
)) {
8506 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8507 PAGE_SIZE
- len
, 1);
8509 if (PAGE_SIZE
- len
)
8513 size
-= min(size
, 16U);
8519 static ssize_t
store_measurement(struct device
*d
,
8520 struct device_attribute
*attr
,
8521 const char *buf
, size_t count
)
8523 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8524 struct ieee80211_measurement_params params
= {
8525 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
8526 .start_time
= cpu_to_le64(priv
->last_tsf
),
8527 .duration
= cpu_to_le16(1),
8529 u8 type
= IWL_MEASURE_BASIC
;
8535 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
8536 channel
= simple_strtoul(p
, NULL
, 0);
8538 params
.channel
= channel
;
8541 while (*p
&& *p
!= ' ')
8544 type
= simple_strtoul(p
+ 1, NULL
, 0);
8547 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8548 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
8549 iwl_get_measurement(priv
, ¶ms
, type
);
8554 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
8555 show_measurement
, store_measurement
);
8556 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8558 static ssize_t
store_retry_rate(struct device
*d
,
8559 struct device_attribute
*attr
,
8560 const char *buf
, size_t count
)
8562 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8564 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
8565 if (priv
->retry_rate
<= 0)
8566 priv
->retry_rate
= 1;
8571 static ssize_t
show_retry_rate(struct device
*d
,
8572 struct device_attribute
*attr
, char *buf
)
8574 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8575 return sprintf(buf
, "%d", priv
->retry_rate
);
8578 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
8581 static ssize_t
store_power_level(struct device
*d
,
8582 struct device_attribute
*attr
,
8583 const char *buf
, size_t count
)
8585 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8589 mode
= simple_strtoul(buf
, NULL
, 0);
8590 mutex_lock(&priv
->mutex
);
8592 if (!iwl_is_ready(priv
)) {
8597 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
8598 mode
= IWL_POWER_AC
;
8600 mode
|= IWL_POWER_ENABLED
;
8602 if (mode
!= priv
->power_mode
) {
8603 rc
= iwl_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
8605 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8608 priv
->power_mode
= mode
;
8614 mutex_unlock(&priv
->mutex
);
8618 #define MAX_WX_STRING 80
8620 /* Values are in microsecond */
8621 static const s32 timeout_duration
[] = {
8628 static const s32 period_duration
[] = {
8636 static ssize_t
show_power_level(struct device
*d
,
8637 struct device_attribute
*attr
, char *buf
)
8639 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8640 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
8643 p
+= sprintf(p
, "%d ", level
);
8645 case IWL_POWER_MODE_CAM
:
8647 p
+= sprintf(p
, "(AC)");
8649 case IWL_POWER_BATTERY
:
8650 p
+= sprintf(p
, "(BATTERY)");
8654 "(Timeout %dms, Period %dms)",
8655 timeout_duration
[level
- 1] / 1000,
8656 period_duration
[level
- 1] / 1000);
8659 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
8660 p
+= sprintf(p
, " OFF\n");
8662 p
+= sprintf(p
, " \n");
8664 return (p
- buf
+ 1);
8668 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
8671 static ssize_t
show_channels(struct device
*d
,
8672 struct device_attribute
*attr
, char *buf
)
8674 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8676 struct ieee80211_channel
*channels
= NULL
;
8677 const struct ieee80211_hw_mode
*hw_mode
= NULL
;
8680 if (!iwl_is_ready(priv
))
8683 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211G
);
8685 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211B
);
8687 channels
= hw_mode
->channels
;
8688 count
= hw_mode
->num_channels
;
8693 "Displaying %d channels in 2.4GHz band "
8694 "(802.11bg):\n", count
);
8696 for (i
= 0; i
< count
; i
++)
8697 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8699 channels
[i
].power_level
,
8701 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8702 " (IEEE 802.11h required)" : "",
8703 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8706 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8709 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8710 "active/passive" : "passive only");
8712 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211A
);
8714 channels
= hw_mode
->channels
;
8715 count
= hw_mode
->num_channels
;
8721 len
+= sprintf(&buf
[len
], "Displaying %d channels in 5.2GHz band "
8722 "(802.11a):\n", count
);
8724 for (i
= 0; i
< count
; i
++)
8725 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8727 channels
[i
].power_level
,
8729 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8730 " (IEEE 802.11h required)" : "",
8731 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8734 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8737 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8738 "active/passive" : "passive only");
8743 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
8745 static ssize_t
show_statistics(struct device
*d
,
8746 struct device_attribute
*attr
, char *buf
)
8748 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8749 u32 size
= sizeof(struct iwl_notif_statistics
);
8750 u32 len
= 0, ofs
= 0;
8751 u8
*data
= (u8
*) & priv
->statistics
;
8754 if (!iwl_is_alive(priv
))
8757 mutex_lock(&priv
->mutex
);
8758 rc
= iwl_send_statistics_request(priv
);
8759 mutex_unlock(&priv
->mutex
);
8763 "Error sending statistics request: 0x%08X\n", rc
);
8767 while (size
&& (PAGE_SIZE
- len
)) {
8768 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8769 PAGE_SIZE
- len
, 1);
8771 if (PAGE_SIZE
- len
)
8775 size
-= min(size
, 16U);
8781 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
8783 static ssize_t
show_antenna(struct device
*d
,
8784 struct device_attribute
*attr
, char *buf
)
8786 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8788 if (!iwl_is_alive(priv
))
8791 return sprintf(buf
, "%d\n", priv
->antenna
);
8794 static ssize_t
store_antenna(struct device
*d
,
8795 struct device_attribute
*attr
,
8796 const char *buf
, size_t count
)
8799 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8804 if (sscanf(buf
, "%1i", &ant
) != 1) {
8805 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8809 if ((ant
>= 0) && (ant
<= 2)) {
8810 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
8811 priv
->antenna
= (enum iwl_antenna
)ant
;
8813 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
8819 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
8821 static ssize_t
show_status(struct device
*d
,
8822 struct device_attribute
*attr
, char *buf
)
8824 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8825 if (!iwl_is_alive(priv
))
8827 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
8830 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
8832 static ssize_t
dump_error_log(struct device
*d
,
8833 struct device_attribute
*attr
,
8834 const char *buf
, size_t count
)
8836 char *p
= (char *)buf
;
8839 iwl_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
8841 return strnlen(buf
, count
);
8844 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
8846 static ssize_t
dump_event_log(struct device
*d
,
8847 struct device_attribute
*attr
,
8848 const char *buf
, size_t count
)
8850 char *p
= (char *)buf
;
8853 iwl_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
8855 return strnlen(buf
, count
);
8858 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
8860 /*****************************************************************************
8862 * driver setup and teardown
8864 *****************************************************************************/
8866 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
8868 priv
->workqueue
= create_workqueue(DRV_NAME
);
8870 init_waitqueue_head(&priv
->wait_command_queue
);
8872 INIT_WORK(&priv
->up
, iwl_bg_up
);
8873 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
8874 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
8875 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
8876 INIT_WORK(&priv
->request_scan
, iwl_bg_request_scan
);
8877 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
8878 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
8879 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
8880 INIT_DELAYED_WORK(&priv
->post_associate
, iwl_bg_post_associate
);
8881 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
8882 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
8883 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
8885 iwl_hw_setup_deferred_work(priv
);
8887 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
8888 iwl_irq_tasklet
, (unsigned long)priv
);
8891 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
8893 iwl_hw_cancel_deferred_work(priv
);
8895 cancel_delayed_work_sync(&priv
->init_alive_start
);
8896 cancel_delayed_work(&priv
->scan_check
);
8897 cancel_delayed_work(&priv
->alive_start
);
8898 cancel_delayed_work(&priv
->post_associate
);
8899 cancel_work_sync(&priv
->beacon_update
);
8902 static struct attribute
*iwl_sysfs_entries
[] = {
8903 &dev_attr_antenna
.attr
,
8904 &dev_attr_channels
.attr
,
8905 &dev_attr_dump_errors
.attr
,
8906 &dev_attr_dump_events
.attr
,
8907 &dev_attr_flags
.attr
,
8908 &dev_attr_filter_flags
.attr
,
8909 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8910 &dev_attr_measurement
.attr
,
8912 &dev_attr_power_level
.attr
,
8913 &dev_attr_retry_rate
.attr
,
8914 &dev_attr_rf_kill
.attr
,
8915 &dev_attr_rs_window
.attr
,
8916 &dev_attr_statistics
.attr
,
8917 &dev_attr_status
.attr
,
8918 &dev_attr_temperature
.attr
,
8919 &dev_attr_tune
.attr
,
8920 &dev_attr_tx_power
.attr
,
8925 static struct attribute_group iwl_attribute_group
= {
8926 .name
= NULL
, /* put in device directory */
8927 .attrs
= iwl_sysfs_entries
,
8930 static struct ieee80211_ops iwl_hw_ops
= {
8932 .start
= iwl_mac_start
,
8933 .stop
= iwl_mac_stop
,
8934 .add_interface
= iwl_mac_add_interface
,
8935 .remove_interface
= iwl_mac_remove_interface
,
8936 .config
= iwl_mac_config
,
8937 .config_interface
= iwl_mac_config_interface
,
8938 .configure_filter
= iwl_configure_filter
,
8939 .set_key
= iwl_mac_set_key
,
8940 .get_stats
= iwl_mac_get_stats
,
8941 .get_tx_stats
= iwl_mac_get_tx_stats
,
8942 .conf_tx
= iwl_mac_conf_tx
,
8943 .get_tsf
= iwl_mac_get_tsf
,
8944 .reset_tsf
= iwl_mac_reset_tsf
,
8945 .beacon_update
= iwl_mac_beacon_update
,
8946 .erp_ie_changed
= iwl_mac_erp_ie_changed
,
8947 #ifdef CONFIG_IWLWIFI_HT
8948 .conf_ht
= iwl_mac_conf_ht
,
8949 .get_ht_capab
= iwl_mac_get_ht_capab
,
8950 #ifdef CONFIG_IWLWIFI_HT_AGG
8951 .ht_tx_agg_start
= iwl_mac_ht_tx_agg_start
,
8952 .ht_tx_agg_stop
= iwl_mac_ht_tx_agg_stop
,
8953 .ht_rx_agg_start
= iwl_mac_ht_rx_agg_start
,
8954 .ht_rx_agg_stop
= iwl_mac_ht_rx_agg_stop
,
8955 #endif /* CONFIG_IWLWIFI_HT_AGG */
8956 #endif /* CONFIG_IWLWIFI_HT */
8957 .hw_scan
= iwl_mac_hw_scan
8960 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
8963 struct iwl_priv
*priv
;
8964 struct ieee80211_hw
*hw
;
8967 if (iwl_param_disable_hw_scan
) {
8968 IWL_DEBUG_INFO("Disabling hw_scan\n");
8969 iwl_hw_ops
.hw_scan
= NULL
;
8972 if ((iwl_param_queues_num
> IWL_MAX_NUM_QUEUES
) ||
8973 (iwl_param_queues_num
< IWL_MIN_NUM_QUEUES
)) {
8974 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8975 IWL_MIN_NUM_QUEUES
, IWL_MAX_NUM_QUEUES
);
8980 /* mac80211 allocates memory for this device instance, including
8981 * space for this driver's private structure */
8982 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwl_hw_ops
);
8984 IWL_ERROR("Can not allocate network device\n");
8988 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
8990 hw
->rate_control_algorithm
= "iwl-4965-rs";
8992 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8996 priv
->pci_dev
= pdev
;
8997 priv
->antenna
= (enum iwl_antenna
)iwl_param_antenna
;
8998 #ifdef CONFIG_IWLWIFI_DEBUG
8999 iwl_debug_level
= iwl_param_debug
;
9000 atomic_set(&priv
->restrict_refcnt
, 0);
9002 priv
->retry_rate
= 1;
9004 priv
->ibss_beacon
= NULL
;
9006 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9007 * the range of signal quality values that we'll provide.
9008 * Negative values for level/noise indicate that we'll provide dBm.
9009 * For WE, at least, non-0 values here *enable* display of values
9010 * in app (iwconfig). */
9011 hw
->max_rssi
= -20; /* signal level, negative indicates dBm */
9012 hw
->max_noise
= -20; /* noise level, negative indicates dBm */
9013 hw
->max_signal
= 100; /* link quality indication (%) */
9015 /* Tell mac80211 our Tx characteristics */
9016 hw
->flags
= IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
;
9019 #ifdef CONFIG_IWLWIFI_HT
9020 #ifdef CONFIG_IWLWIFI_HT_AGG
9022 #endif /* CONFIG_IWLWIFI_HT_AGG */
9023 #endif /* CONFIG_IWLWIFI_HT */
9025 spin_lock_init(&priv
->lock
);
9026 spin_lock_init(&priv
->power_data
.lock
);
9027 spin_lock_init(&priv
->sta_lock
);
9028 spin_lock_init(&priv
->hcmd_lock
);
9029 spin_lock_init(&priv
->lq_mngr
.lock
);
9031 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
9032 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
9034 INIT_LIST_HEAD(&priv
->free_frames
);
9036 mutex_init(&priv
->mutex
);
9037 if (pci_enable_device(pdev
)) {
9039 goto out_ieee80211_free_hw
;
9042 pci_set_master(pdev
);
9044 iwl_clear_stations_table(priv
);
9046 priv
->data_retry_limit
= -1;
9047 priv
->ieee_channels
= NULL
;
9048 priv
->ieee_rates
= NULL
;
9051 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
9053 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
9055 printk(KERN_WARNING DRV_NAME
": No suitable DMA available.\n");
9056 goto out_pci_disable_device
;
9059 pci_set_drvdata(pdev
, priv
);
9060 err
= pci_request_regions(pdev
, DRV_NAME
);
9062 goto out_pci_disable_device
;
9063 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9064 * PCI Tx retries from interfering with C3 CPU state */
9065 pci_write_config_byte(pdev
, 0x41, 0x00);
9066 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
9067 if (!priv
->hw_base
) {
9069 goto out_pci_release_regions
;
9072 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9073 (unsigned long long) pci_resource_len(pdev
, 0));
9074 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
9076 /* Initialize module parameter values here */
9078 if (iwl_param_disable
) {
9079 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
9080 IWL_DEBUG_INFO("Radio disabled.\n");
9083 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
9086 priv
->use_ant_b_for_management_frame
= 1; /* start with ant B */
9087 priv
->is_ht_enabled
= 1;
9088 priv
->channel_width
= IWL_CHANNEL_WIDTH_40MHZ
;
9089 priv
->valid_antenna
= 0x7; /* assume all 3 connected */
9090 priv
->ps_mode
= IWL_MIMO_PS_NONE
;
9092 iwl4965_set_rxon_chain(priv
);
9094 printk(KERN_INFO DRV_NAME
9095 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9097 /* Device-specific setup */
9098 if (iwl_hw_set_hw_setting(priv
)) {
9099 IWL_ERROR("failed to set hw settings\n");
9100 mutex_unlock(&priv
->mutex
);
9104 #ifdef CONFIG_IWLWIFI_QOS
9105 if (iwl_param_qos_enable
)
9106 priv
->qos_data
.qos_enable
= 1;
9108 iwl_reset_qos(priv
);
9110 priv
->qos_data
.qos_active
= 0;
9111 priv
->qos_data
.qos_cap
.val
= 0;
9112 #endif /* CONFIG_IWLWIFI_QOS */
9114 iwl_set_rxon_channel(priv
, MODE_IEEE80211G
, 6);
9115 iwl_setup_deferred_work(priv
);
9116 iwl_setup_rx_handlers(priv
);
9118 priv
->rates_mask
= IWL_RATES_MASK
;
9119 /* If power management is turned on, default to AC mode */
9120 priv
->power_mode
= IWL_POWER_AC
;
9121 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
9123 pci_enable_msi(pdev
);
9125 err
= request_irq(pdev
->irq
, iwl_isr
, IRQF_SHARED
, DRV_NAME
, priv
);
9127 IWL_ERROR("Error allocating IRQ %d\n", pdev
->irq
);
9128 goto out_disable_msi
;
9131 mutex_lock(&priv
->mutex
);
9133 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9135 IWL_ERROR("failed to create sysfs device attributes\n");
9136 mutex_unlock(&priv
->mutex
);
9137 goto out_release_irq
;
9140 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9141 * ucode filename and max sizes are card-specific. */
9142 err
= iwl_read_ucode(priv
);
9144 IWL_ERROR("Could not read microcode: %d\n", err
);
9145 mutex_unlock(&priv
->mutex
);
9149 mutex_unlock(&priv
->mutex
);
9151 IWL_DEBUG_INFO("Queueing UP work.\n");
9153 queue_work(priv
->workqueue
, &priv
->up
);
9158 iwl_dealloc_ucode_pci(priv
);
9160 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9163 free_irq(pdev
->irq
, priv
);
9166 pci_disable_msi(pdev
);
9167 destroy_workqueue(priv
->workqueue
);
9168 priv
->workqueue
= NULL
;
9169 iwl_unset_hw_setting(priv
);
9172 pci_iounmap(pdev
, priv
->hw_base
);
9173 out_pci_release_regions
:
9174 pci_release_regions(pdev
);
9175 out_pci_disable_device
:
9176 pci_disable_device(pdev
);
9177 pci_set_drvdata(pdev
, NULL
);
9178 out_ieee80211_free_hw
:
9179 ieee80211_free_hw(priv
->hw
);
9184 static void iwl_pci_remove(struct pci_dev
*pdev
)
9186 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9187 struct list_head
*p
, *q
;
9193 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9195 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
9199 /* Free MAC hash list for ADHOC */
9200 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
9201 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
9203 kfree(list_entry(p
, struct iwl_ibss_seq
, list
));
9207 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9209 iwl_dealloc_ucode_pci(priv
);
9212 iwl_rx_queue_free(priv
, &priv
->rxq
);
9213 iwl_hw_txq_ctx_free(priv
);
9215 iwl_unset_hw_setting(priv
);
9216 iwl_clear_stations_table(priv
);
9218 if (priv
->mac80211_registered
) {
9219 ieee80211_unregister_hw(priv
->hw
);
9220 iwl_rate_control_unregister(priv
->hw
);
9223 /*netif_stop_queue(dev); */
9224 flush_workqueue(priv
->workqueue
);
9226 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9227 * priv->workqueue... so we can't take down the workqueue
9229 destroy_workqueue(priv
->workqueue
);
9230 priv
->workqueue
= NULL
;
9232 free_irq(pdev
->irq
, priv
);
9233 pci_disable_msi(pdev
);
9234 pci_iounmap(pdev
, priv
->hw_base
);
9235 pci_release_regions(pdev
);
9236 pci_disable_device(pdev
);
9237 pci_set_drvdata(pdev
, NULL
);
9239 kfree(priv
->channel_info
);
9241 kfree(priv
->ieee_channels
);
9242 kfree(priv
->ieee_rates
);
9244 if (priv
->ibss_beacon
)
9245 dev_kfree_skb(priv
->ibss_beacon
);
9247 ieee80211_free_hw(priv
->hw
);
9252 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
9254 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9256 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9258 /* Take down the device; powers it off, etc. */
9261 if (priv
->mac80211_registered
)
9262 ieee80211_stop_queues(priv
->hw
);
9264 pci_save_state(pdev
);
9265 pci_disable_device(pdev
);
9266 pci_set_power_state(pdev
, PCI_D3hot
);
9271 static void iwl_resume(struct iwl_priv
*priv
)
9273 unsigned long flags
;
9275 /* The following it a temporary work around due to the
9276 * suspend / resume not fully initializing the NIC correctly.
9277 * Without all of the following, resume will not attempt to take
9278 * down the NIC (it shouldn't really need to) and will just try
9279 * and bring the NIC back up. However that fails during the
9280 * ucode verification process. This then causes iwl_down to be
9281 * called *after* iwl_hw_nic_init() has succeeded -- which
9282 * then lets the next init sequence succeed. So, we've
9283 * replicated all of that NIC init code here... */
9285 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9287 iwl_hw_nic_init(priv
);
9289 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9290 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
9291 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
9292 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9293 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9294 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9296 /* tell the device to stop sending interrupts */
9297 iwl_disable_interrupts(priv
);
9299 spin_lock_irqsave(&priv
->lock
, flags
);
9300 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
9302 if (!iwl_grab_restricted_access(priv
)) {
9303 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
9304 APMG_CLK_VAL_DMA_CLK_RQT
);
9305 iwl_release_restricted_access(priv
);
9307 spin_unlock_irqrestore(&priv
->lock
, flags
);
9311 iwl_hw_nic_reset(priv
);
9313 /* Bring the device back up */
9314 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9315 queue_work(priv
->workqueue
, &priv
->up
);
9318 static int iwl_pci_resume(struct pci_dev
*pdev
)
9320 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9323 printk(KERN_INFO
"Coming out of suspend...\n");
9325 pci_set_power_state(pdev
, PCI_D0
);
9326 err
= pci_enable_device(pdev
);
9327 pci_restore_state(pdev
);
9330 * Suspend/Resume resets the PCI configuration space, so we have to
9331 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9332 * from interfering with C3 CPU state. pci_restore_state won't help
9333 * here since it only restores the first 64 bytes pci config header.
9335 pci_write_config_byte(pdev
, 0x41, 0x00);
9342 #endif /* CONFIG_PM */
9344 /*****************************************************************************
9346 * driver and module entry point
9348 *****************************************************************************/
9350 static struct pci_driver iwl_driver
= {
9352 .id_table
= iwl_hw_card_ids
,
9353 .probe
= iwl_pci_probe
,
9354 .remove
= __devexit_p(iwl_pci_remove
),
9356 .suspend
= iwl_pci_suspend
,
9357 .resume
= iwl_pci_resume
,
9361 static int __init
iwl_init(void)
9365 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
9366 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
9367 ret
= pci_register_driver(&iwl_driver
);
9369 IWL_ERROR("Unable to initialize PCI module\n");
9372 #ifdef CONFIG_IWLWIFI_DEBUG
9373 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9375 IWL_ERROR("Unable to create driver sysfs file\n");
9376 pci_unregister_driver(&iwl_driver
);
9384 static void __exit
iwl_exit(void)
9386 #ifdef CONFIG_IWLWIFI_DEBUG
9387 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9389 pci_unregister_driver(&iwl_driver
);
9392 module_param_named(antenna
, iwl_param_antenna
, int, 0444);
9393 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
9394 module_param_named(disable
, iwl_param_disable
, int, 0444);
9395 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
9396 module_param_named(hwcrypto
, iwl_param_hwcrypto
, int, 0444);
9397 MODULE_PARM_DESC(hwcrypto
,
9398 "using hardware crypto engine (default 0 [software])\n");
9399 module_param_named(debug
, iwl_param_debug
, int, 0444);
9400 MODULE_PARM_DESC(debug
, "debug output mask");
9401 module_param_named(disable_hw_scan
, iwl_param_disable_hw_scan
, int, 0444);
9402 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
9404 module_param_named(queues_num
, iwl_param_queues_num
, int, 0444);
9405 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
9408 module_param_named(qos_enable
, iwl_param_qos_enable
, int, 0444);
9409 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
9411 module_exit(iwl_exit
);
9412 module_init(iwl_init
);