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
->last_used
- q
->first_empty
;
213 if (q
->last_used
> q
->first_empty
)
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
->first_empty
> q
->last_used
?
240 (i
>= q
->last_used
&& i
< q
->first_empty
) :
241 !(i
< q
->last_used
&& i
>= q
->first_empty
);
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
->first_empty
= q
->last_used
= 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 auxilary 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 /* alocate 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
->first_empty
!= q
->last_used
;
372 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, 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 /* temparary 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 twh 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
->first_empty
];
656 memset(tfd
, 0, sizeof(*tfd
));
658 control_flags
= (u32
*) tfd
;
660 idx
= get_cmd_index(q
, q
->first_empty
, 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
->first_empty
));
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
->first_empty
, idx
, IWL_CMD_QUEUE_NUM
);
686 txq
->need_update
= 1;
687 ret
= iwl4965_tx_queue_update_wr_ptr(priv
, txq
, 0);
688 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, 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 /* A command can not be asynchronous AND expect an SKB to be set. */
810 BUG_ON((cmd
->meta
.flags
& CMD_ASYNC
) &&
811 (cmd
->meta
.flags
& CMD_WANT_SKB
));
813 if (cmd
->meta
.flags
& CMD_ASYNC
)
814 return iwl_send_cmd_async(priv
, cmd
);
816 return iwl_send_cmd_sync(priv
, cmd
);
819 int iwl_send_cmd_pdu(struct iwl_priv
*priv
, u8 id
, u16 len
, const void *data
)
821 struct iwl_host_cmd cmd
= {
827 return iwl_send_cmd_sync(priv
, &cmd
);
830 static int __must_check
iwl_send_cmd_u32(struct iwl_priv
*priv
, u8 id
, u32 val
)
832 struct iwl_host_cmd cmd
= {
838 return iwl_send_cmd_sync(priv
, &cmd
);
841 int iwl_send_statistics_request(struct iwl_priv
*priv
)
843 return iwl_send_cmd_u32(priv
, REPLY_STATISTICS_CMD
, 0);
847 * iwl_rxon_add_station - add station into station table.
849 * there is only one AP station with id= IWL_AP_ID
850 * NOTE: mutex must be held before calling the this fnction
852 static int iwl_rxon_add_station(struct iwl_priv
*priv
,
853 const u8
*addr
, int is_ap
)
857 sta_id
= iwl_add_station(priv
, addr
, is_ap
, 0);
858 iwl4965_add_station(priv
, addr
, is_ap
);
864 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
865 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
866 * @channel: Any channel valid for the requested phymode
868 * In addition to setting the staging RXON, priv->phymode is also set.
870 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
871 * in the staging RXON flag structure based on the phymode
873 static int iwl_set_rxon_channel(struct iwl_priv
*priv
, u8 phymode
, u16 channel
)
875 if (!iwl_get_channel_info(priv
, phymode
, channel
)) {
876 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
881 if ((le16_to_cpu(priv
->staging_rxon
.channel
) == channel
) &&
882 (priv
->phymode
== phymode
))
885 priv
->staging_rxon
.channel
= cpu_to_le16(channel
);
886 if (phymode
== MODE_IEEE80211A
)
887 priv
->staging_rxon
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
889 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
891 priv
->phymode
= phymode
;
893 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel
, phymode
);
899 * iwl_check_rxon_cmd - validate RXON structure is valid
901 * NOTE: This is really only useful during development and can eventually
902 * be #ifdef'd out once the driver is stable and folks aren't actively
905 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd
*rxon
)
910 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
911 error
|= le32_to_cpu(rxon
->flags
&
912 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
913 RXON_FLG_RADAR_DETECT_MSK
));
915 IWL_WARNING("check 24G fields %d | %d\n",
918 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
919 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
921 IWL_WARNING("check 52 fields %d | %d\n",
923 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
925 IWL_WARNING("check 52 CCK %d | %d\n",
928 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
930 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
932 /* make sure basic rates 6Mbps and 1Mbps are supported */
933 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
934 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
936 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
938 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
940 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
942 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
943 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
945 IWL_WARNING("check CCK and short slot %d | %d\n",
948 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
949 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
951 IWL_WARNING("check CCK & auto detect %d | %d\n",
954 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
955 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
957 IWL_WARNING("check TGG and auto detect %d | %d\n",
961 IWL_WARNING("Tuning to channel %d\n",
962 le16_to_cpu(rxon
->channel
));
965 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
972 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
973 * @priv: staging_rxon is comapred to active_rxon
975 * If the RXON structure is changing sufficient to require a new
976 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
977 * to indicate a new tune is required.
979 static int iwl_full_rxon_required(struct iwl_priv
*priv
)
982 /* These items are only settable from the full RXON command */
983 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
984 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
985 priv
->active_rxon
.bssid_addr
) ||
986 compare_ether_addr(priv
->staging_rxon
.node_addr
,
987 priv
->active_rxon
.node_addr
) ||
988 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
989 priv
->active_rxon
.wlap_bssid_addr
) ||
990 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
991 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
992 (priv
->staging_rxon
.air_propagation
!=
993 priv
->active_rxon
.air_propagation
) ||
994 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
995 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
996 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
997 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
998 (priv
->staging_rxon
.rx_chain
!= priv
->active_rxon
.rx_chain
) ||
999 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
1002 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1003 * be updated with the RXON_ASSOC command -- however only some
1004 * flag transitions are allowed using RXON_ASSOC */
1006 /* Check if we are not switching bands */
1007 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
1008 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
1011 /* Check if we are switching association toggle */
1012 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
1013 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
1019 static int iwl_send_rxon_assoc(struct iwl_priv
*priv
)
1022 struct iwl_rx_packet
*res
= NULL
;
1023 struct iwl_rxon_assoc_cmd rxon_assoc
;
1024 struct iwl_host_cmd cmd
= {
1025 .id
= REPLY_RXON_ASSOC
,
1026 .len
= sizeof(rxon_assoc
),
1027 .meta
.flags
= CMD_WANT_SKB
,
1028 .data
= &rxon_assoc
,
1030 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1031 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1033 if ((rxon1
->flags
== rxon2
->flags
) &&
1034 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1035 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1036 (rxon1
->ofdm_ht_single_stream_basic_rates
==
1037 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
1038 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
1039 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
1040 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
1041 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1042 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1046 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1047 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1048 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1049 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1050 rxon_assoc
.reserved
= 0;
1051 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
1052 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
1053 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
1054 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
1055 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
1057 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1061 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1062 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1063 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1067 priv
->alloc_rxb_skb
--;
1068 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1074 * iwl_commit_rxon - commit staging_rxon to hardware
1076 * The RXON command in staging_rxon is commited to the hardware and
1077 * the active_rxon structure is updated with the new data. This
1078 * function correctly transitions out of the RXON_ASSOC_MSK state if
1079 * a HW tune is required based on the RXON structure changes.
1081 static int iwl_commit_rxon(struct iwl_priv
*priv
)
1083 /* cast away the const for active_rxon in this function */
1084 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1085 DECLARE_MAC_BUF(mac
);
1088 if (!iwl_is_alive(priv
))
1091 /* always get timestamp with Rx frame */
1092 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
1094 rc
= iwl_check_rxon_cmd(&priv
->staging_rxon
);
1096 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1100 /* If we don't need to send a full RXON, we can use
1101 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1102 * and other flags for the current radio configuration. */
1103 if (!iwl_full_rxon_required(priv
)) {
1104 rc
= iwl_send_rxon_assoc(priv
);
1106 IWL_ERROR("Error setting RXON_ASSOC "
1107 "configuration (%d).\n", rc
);
1111 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1116 /* station table will be cleared */
1117 priv
->assoc_station_added
= 0;
1119 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1120 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1121 if (!priv
->error_recovering
)
1122 priv
->start_calib
= 0;
1124 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1125 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1127 /* If we are currently associated and the new config requires
1128 * an RXON_ASSOC and the new config wants the associated mask enabled,
1129 * we must clear the associated from the active configuration
1130 * before we apply the new config */
1131 if (iwl_is_associated(priv
) &&
1132 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
1133 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1134 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1136 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1137 sizeof(struct iwl_rxon_cmd
),
1138 &priv
->active_rxon
);
1140 /* If the mask clearing failed then we set
1141 * active_rxon back to what it was previously */
1143 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1144 IWL_ERROR("Error clearing ASSOC_MSK on current "
1145 "configuration (%d).\n", rc
);
1150 IWL_DEBUG_INFO("Sending RXON\n"
1151 "* with%s RXON_FILTER_ASSOC_MSK\n"
1154 ((priv
->staging_rxon
.filter_flags
&
1155 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
1156 le16_to_cpu(priv
->staging_rxon
.channel
),
1157 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
1159 /* Apply the new configuration */
1160 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1161 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
1163 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
1167 iwl_clear_stations_table(priv
);
1169 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1170 if (!priv
->error_recovering
)
1171 priv
->start_calib
= 0;
1173 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1174 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1175 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1177 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1179 /* If we issue a new RXON command which required a tune then we must
1180 * send a new TXPOWER command or we won't be able to Tx any frames */
1181 rc
= iwl_hw_reg_send_txpower(priv
);
1183 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
1187 /* Add the broadcast address so we can send broadcast frames */
1188 if (iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0) ==
1189 IWL_INVALID_STATION
) {
1190 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1194 /* If we have set the ASSOC_MSK and we are in BSS mode then
1195 * add the IWL_AP_ID to the station rate table */
1196 if (iwl_is_associated(priv
) &&
1197 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
1198 if (iwl_rxon_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1)
1199 == IWL_INVALID_STATION
) {
1200 IWL_ERROR("Error adding AP address for transmit.\n");
1203 priv
->assoc_station_added
= 1;
1209 static int iwl_send_bt_config(struct iwl_priv
*priv
)
1211 struct iwl_bt_cmd bt_cmd
= {
1219 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1220 sizeof(struct iwl_bt_cmd
), &bt_cmd
);
1223 static int iwl_send_scan_abort(struct iwl_priv
*priv
)
1226 struct iwl_rx_packet
*res
;
1227 struct iwl_host_cmd cmd
= {
1228 .id
= REPLY_SCAN_ABORT_CMD
,
1229 .meta
.flags
= CMD_WANT_SKB
,
1232 /* If there isn't a scan actively going on in the hardware
1233 * then we are in between scan bands and not actually
1234 * actively scanning, so don't send the abort command */
1235 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1236 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1240 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1242 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1246 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1247 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
1248 /* The scan abort will return 1 for success or
1249 * 2 for "failure". A failure condition can be
1250 * due to simply not being in an active scan which
1251 * can occur if we send the scan abort before we
1252 * the microcode has notified us that a scan is
1254 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
1255 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1256 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
1259 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1264 static int iwl_card_state_sync_callback(struct iwl_priv
*priv
,
1265 struct iwl_cmd
*cmd
,
1266 struct sk_buff
*skb
)
1274 * Use: Sets the internal card state to enable, disable, or halt
1276 * When in the 'enable' state the card operates as normal.
1277 * When in the 'disable' state, the card enters into a low power mode.
1278 * When in the 'halt' state, the card is shut down and must be fully
1279 * restarted to come back on.
1281 static int iwl_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1283 struct iwl_host_cmd cmd
= {
1284 .id
= REPLY_CARD_STATE_CMD
,
1287 .meta
.flags
= meta_flag
,
1290 if (meta_flag
& CMD_ASYNC
)
1291 cmd
.meta
.u
.callback
= iwl_card_state_sync_callback
;
1293 return iwl_send_cmd(priv
, &cmd
);
1296 static int iwl_add_sta_sync_callback(struct iwl_priv
*priv
,
1297 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1299 struct iwl_rx_packet
*res
= NULL
;
1302 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1306 res
= (struct iwl_rx_packet
*)skb
->data
;
1307 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1308 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1313 switch (res
->u
.add_sta
.status
) {
1314 case ADD_STA_SUCCESS_MSK
:
1320 /* We didn't cache the SKB; let the caller free it */
1324 int iwl_send_add_station(struct iwl_priv
*priv
,
1325 struct iwl_addsta_cmd
*sta
, u8 flags
)
1327 struct iwl_rx_packet
*res
= NULL
;
1329 struct iwl_host_cmd cmd
= {
1330 .id
= REPLY_ADD_STA
,
1331 .len
= sizeof(struct iwl_addsta_cmd
),
1332 .meta
.flags
= flags
,
1336 if (flags
& CMD_ASYNC
)
1337 cmd
.meta
.u
.callback
= iwl_add_sta_sync_callback
;
1339 cmd
.meta
.flags
|= CMD_WANT_SKB
;
1341 rc
= iwl_send_cmd(priv
, &cmd
);
1343 if (rc
|| (flags
& CMD_ASYNC
))
1346 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1347 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1348 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1354 switch (res
->u
.add_sta
.status
) {
1355 case ADD_STA_SUCCESS_MSK
:
1356 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1360 IWL_WARNING("REPLY_ADD_STA failed\n");
1365 priv
->alloc_rxb_skb
--;
1366 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1371 static int iwl_update_sta_key_info(struct iwl_priv
*priv
,
1372 struct ieee80211_key_conf
*keyconf
,
1375 unsigned long flags
;
1376 __le16 key_flags
= 0;
1378 switch (keyconf
->alg
) {
1380 key_flags
|= STA_KEY_FLG_CCMP
;
1381 key_flags
|= cpu_to_le16(
1382 keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1383 key_flags
&= ~STA_KEY_FLG_INVALID
;
1391 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1392 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1393 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
1394 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
1397 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
1399 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
1400 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1401 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1403 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1405 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1406 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1410 static int iwl_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
1412 unsigned long flags
;
1414 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1415 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
1416 memset(&priv
->stations
[sta_id
].sta
.key
, 0, sizeof(struct iwl_keyinfo
));
1417 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
1418 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1419 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1420 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1422 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1423 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1427 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
1429 struct list_head
*element
;
1431 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1432 priv
->frames_count
);
1434 while (!list_empty(&priv
->free_frames
)) {
1435 element
= priv
->free_frames
.next
;
1437 kfree(list_entry(element
, struct iwl_frame
, list
));
1438 priv
->frames_count
--;
1441 if (priv
->frames_count
) {
1442 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1443 priv
->frames_count
);
1444 priv
->frames_count
= 0;
1448 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
1450 struct iwl_frame
*frame
;
1451 struct list_head
*element
;
1452 if (list_empty(&priv
->free_frames
)) {
1453 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1455 IWL_ERROR("Could not allocate frame!\n");
1459 priv
->frames_count
++;
1463 element
= priv
->free_frames
.next
;
1465 return list_entry(element
, struct iwl_frame
, list
);
1468 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
1470 memset(frame
, 0, sizeof(*frame
));
1471 list_add(&frame
->list
, &priv
->free_frames
);
1474 unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
1475 struct ieee80211_hdr
*hdr
,
1476 const u8
*dest
, int left
)
1479 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1480 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1481 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1484 if (priv
->ibss_beacon
->len
> left
)
1487 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1489 return priv
->ibss_beacon
->len
;
1492 int iwl_rate_index_from_plcp(int plcp
)
1496 if (plcp
& RATE_MCS_HT_MSK
) {
1499 if (i
>= IWL_RATE_MIMO_6M_PLCP
)
1500 i
= i
- IWL_RATE_MIMO_6M_PLCP
;
1502 i
+= IWL_FIRST_OFDM_RATE
;
1503 /* skip 9M not supported in ht*/
1504 if (i
>= IWL_RATE_9M_INDEX
)
1506 if ((i
>= IWL_FIRST_OFDM_RATE
) &&
1507 (i
<= IWL_LAST_OFDM_RATE
))
1510 for (i
= 0; i
< ARRAY_SIZE(iwl_rates
); i
++)
1511 if (iwl_rates
[i
].plcp
== (plcp
&0xFF))
1517 static u8
iwl_rate_get_lowest_plcp(int rate_mask
)
1521 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1522 i
= iwl_rates
[i
].next_ieee
) {
1523 if (rate_mask
& (1 << i
))
1524 return iwl_rates
[i
].plcp
;
1527 return IWL_RATE_INVALID
;
1530 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
1532 struct iwl_frame
*frame
;
1533 unsigned int frame_size
;
1537 frame
= iwl_get_free_frame(priv
);
1540 IWL_ERROR("Could not obtain free frame buffer for beacon "
1545 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1546 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
&
1548 if (rate
== IWL_INVALID_RATE
)
1549 rate
= IWL_RATE_6M_PLCP
;
1551 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1552 if (rate
== IWL_INVALID_RATE
)
1553 rate
= IWL_RATE_1M_PLCP
;
1556 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
1558 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1561 iwl_free_frame(priv
, frame
);
1566 /******************************************************************************
1568 * EEPROM related functions
1570 ******************************************************************************/
1572 static void get_eeprom_mac(struct iwl_priv
*priv
, u8
*mac
)
1574 memcpy(mac
, priv
->eeprom
.mac_address
, 6);
1578 * iwl_eeprom_init - read EEPROM contents
1580 * Load the EEPROM from adapter into priv->eeprom
1582 * NOTE: This routine uses the non-debug IO access functions.
1584 int iwl_eeprom_init(struct iwl_priv
*priv
)
1586 u16
*e
= (u16
*)&priv
->eeprom
;
1587 u32 gp
= iwl_read32(priv
, CSR_EEPROM_GP
);
1589 int sz
= sizeof(priv
->eeprom
);
1594 /* The EEPROM structure has several padding buffers within it
1595 * and when adding new EEPROM maps is subject to programmer errors
1596 * which may be very difficult to identify without explicitly
1597 * checking the resulting size of the eeprom map. */
1598 BUILD_BUG_ON(sizeof(priv
->eeprom
) != IWL_EEPROM_IMAGE_SIZE
);
1600 if ((gp
& CSR_EEPROM_GP_VALID_MSK
) == CSR_EEPROM_GP_BAD_SIGNATURE
) {
1601 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp
);
1605 rc
= iwl_eeprom_aqcuire_semaphore(priv
);
1607 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1611 /* eeprom is an array of 16bit values */
1612 for (addr
= 0; addr
< sz
; addr
+= sizeof(u16
)) {
1613 _iwl_write32(priv
, CSR_EEPROM_REG
, addr
<< 1);
1614 _iwl_clear_bit(priv
, CSR_EEPROM_REG
, CSR_EEPROM_REG_BIT_CMD
);
1616 for (i
= 0; i
< IWL_EEPROM_ACCESS_TIMEOUT
;
1617 i
+= IWL_EEPROM_ACCESS_DELAY
) {
1618 r
= _iwl_read_restricted(priv
, CSR_EEPROM_REG
);
1619 if (r
& CSR_EEPROM_REG_READ_VALID_MSK
)
1621 udelay(IWL_EEPROM_ACCESS_DELAY
);
1624 if (!(r
& CSR_EEPROM_REG_READ_VALID_MSK
)) {
1625 IWL_ERROR("Time out reading EEPROM[%d]", addr
);
1629 e
[addr
/ 2] = le16_to_cpu(r
>> 16);
1634 iwl_eeprom_release_semaphore(priv
);
1638 /******************************************************************************
1640 * Misc. internal state and helper functions
1642 ******************************************************************************/
1643 #ifdef CONFIG_IWLWIFI_DEBUG
1646 * iwl_report_frame - dump frame to syslog during debug sessions
1648 * hack this function to show different aspects of received frames,
1649 * including selective frame dumps.
1650 * group100 parameter selects whether to show 1 out of 100 good frames.
1652 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1653 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1654 * is 3945-specific and gives bad output for 4965. Need to split the
1655 * functionality, keep common stuff here.
1657 void iwl_report_frame(struct iwl_priv
*priv
,
1658 struct iwl_rx_packet
*pkt
,
1659 struct ieee80211_hdr
*header
, int group100
)
1662 u32 print_summary
= 0;
1663 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
1680 struct iwl_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
1681 struct iwl_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
1682 struct iwl_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
1683 u8
*data
= IWL_RX_DATA(pkt
);
1686 fc
= le16_to_cpu(header
->frame_control
);
1687 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
1690 channel
= le16_to_cpu(rx_hdr
->channel
);
1691 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
1692 rate_sym
= rx_hdr
->rate
;
1693 length
= le16_to_cpu(rx_hdr
->len
);
1695 /* end-of-frame status and timestamp */
1696 status
= le32_to_cpu(rx_end
->status
);
1697 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
1698 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
1699 tsf
= le64_to_cpu(rx_end
->timestamp
);
1701 /* signal statistics */
1702 rssi
= rx_stats
->rssi
;
1703 agc
= rx_stats
->agc
;
1704 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
1705 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
1707 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1709 /* if data frame is to us and all is good,
1710 * (optionally) print summary for only 1 out of every 100 */
1711 if (to_us
&& (fc
& ~IEEE80211_FCTL_PROTECTED
) ==
1712 (IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
1715 print_summary
= 1; /* print each frame */
1716 else if (priv
->framecnt_to_us
< 100) {
1717 priv
->framecnt_to_us
++;
1720 priv
->framecnt_to_us
= 0;
1725 /* print summary for all other frames */
1729 if (print_summary
) {
1734 title
= "100Frames";
1735 else if (fc
& IEEE80211_FCTL_RETRY
)
1737 else if (ieee80211_is_assoc_response(fc
))
1739 else if (ieee80211_is_reassoc_response(fc
))
1741 else if (ieee80211_is_probe_response(fc
)) {
1743 print_dump
= 1; /* dump frame contents */
1744 } else if (ieee80211_is_beacon(fc
)) {
1746 print_dump
= 1; /* dump frame contents */
1747 } else if (ieee80211_is_atim(fc
))
1749 else if (ieee80211_is_auth(fc
))
1751 else if (ieee80211_is_deauth(fc
))
1753 else if (ieee80211_is_disassoc(fc
))
1758 rate
= iwl_rate_index_from_plcp(rate_sym
);
1762 rate
= iwl_rates
[rate
].ieee
/ 2;
1764 /* print frame summary.
1765 * MAC addresses show just the last byte (for brevity),
1766 * but you can hack it to show more, if you'd like to. */
1768 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1769 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1770 title
, fc
, header
->addr1
[5],
1771 length
, rssi
, channel
, rate
);
1773 /* src/dst addresses assume managed mode */
1774 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1775 "src=0x%02x, rssi=%u, tim=%lu usec, "
1776 "phy=0x%02x, chnl=%d\n",
1777 title
, fc
, header
->addr1
[5],
1778 header
->addr3
[5], rssi
,
1779 tsf_low
- priv
->scan_start_tsf
,
1780 phy_flags
, channel
);
1784 iwl_print_hex_dump(IWL_DL_RX
, data
, length
);
1788 static void iwl_unset_hw_setting(struct iwl_priv
*priv
)
1790 if (priv
->hw_setting
.shared_virt
)
1791 pci_free_consistent(priv
->pci_dev
,
1792 sizeof(struct iwl_shared
),
1793 priv
->hw_setting
.shared_virt
,
1794 priv
->hw_setting
.shared_phys
);
1798 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1800 * return : set the bit for each supported rate insert in ie
1802 static u16
iwl_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1803 u16 basic_rate
, int max_count
)
1805 u16 ret_rates
= 0, bit
;
1811 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1812 if (bit
& supported_rate
) {
1814 rates
[*ie
] = iwl_rates
[i
].ieee
|
1815 ((bit
& basic_rate
) ? 0x80 : 0x00);
1817 if (*ie
>= max_count
)
1825 #ifdef CONFIG_IWLWIFI_HT
1826 void static iwl_set_ht_capab(struct ieee80211_hw
*hw
,
1827 struct ieee80211_ht_capability
*ht_cap
,
1832 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1834 static u16
iwl_fill_probe_req(struct iwl_priv
*priv
,
1835 struct ieee80211_mgmt
*frame
,
1836 int left
, int is_direct
)
1842 /* Make sure there is enough space for the probe request,
1843 * two mandatory IEs and the data */
1849 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1850 memcpy(frame
->da
, BROADCAST_ADDR
, ETH_ALEN
);
1851 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1852 memcpy(frame
->bssid
, BROADCAST_ADDR
, ETH_ALEN
);
1853 frame
->seq_ctrl
= 0;
1855 /* fill in our indirect SSID IE */
1862 pos
= &(frame
->u
.probe_req
.variable
[0]);
1863 *pos
++ = WLAN_EID_SSID
;
1866 /* fill in our direct SSID IE... */
1869 left
-= 2 + priv
->essid_len
;
1872 /* ... fill it in... */
1873 *pos
++ = WLAN_EID_SSID
;
1874 *pos
++ = priv
->essid_len
;
1875 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1876 pos
+= priv
->essid_len
;
1877 len
+= 2 + priv
->essid_len
;
1880 /* fill in supported rate */
1885 /* ... fill it in... */
1886 *pos
++ = WLAN_EID_SUPP_RATES
;
1888 ret_rates
= priv
->active_rate
= priv
->rates_mask
;
1889 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1891 iwl_supported_rate_to_ie(pos
, priv
->active_rate
,
1892 priv
->active_rate_basic
, left
);
1895 ret_rates
= ~ret_rates
& priv
->active_rate
;
1900 /* fill in supported extended rate */
1905 /* ... fill it in... */
1906 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1908 iwl_supported_rate_to_ie(pos
, ret_rates
, priv
->active_rate_basic
, left
);
1912 #ifdef CONFIG_IWLWIFI_HT
1913 if (is_direct
&& priv
->is_ht_enabled
) {
1914 u8 use_wide_chan
= 1;
1916 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
1919 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1920 *pos
++ = sizeof(struct ieee80211_ht_capability
);
1921 iwl_set_ht_capab(NULL
, (struct ieee80211_ht_capability
*)pos
,
1923 len
+= 2 + sizeof(struct ieee80211_ht_capability
);
1925 #endif /*CONFIG_IWLWIFI_HT */
1934 #ifdef CONFIG_IWLWIFI_QOS
1935 static int iwl_send_qos_params_command(struct iwl_priv
*priv
,
1936 struct iwl_qosparam_cmd
*qos
)
1939 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1940 sizeof(struct iwl_qosparam_cmd
), qos
);
1943 static void iwl_reset_qos(struct iwl_priv
*priv
)
1949 unsigned long flags
;
1952 spin_lock_irqsave(&priv
->lock
, flags
);
1953 priv
->qos_data
.qos_active
= 0;
1955 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) {
1956 if (priv
->qos_data
.qos_enable
)
1957 priv
->qos_data
.qos_active
= 1;
1958 if (!(priv
->active_rate
& 0xfff0)) {
1962 } else if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1963 if (priv
->qos_data
.qos_enable
)
1964 priv
->qos_data
.qos_active
= 1;
1965 } else if (!(priv
->staging_rxon
.flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
1970 if (priv
->qos_data
.qos_active
)
1973 priv
->qos_data
.def_qos_parm
.ac
[0].cw_min
= cpu_to_le16(cw_min
);
1974 priv
->qos_data
.def_qos_parm
.ac
[0].cw_max
= cpu_to_le16(cw_max
);
1975 priv
->qos_data
.def_qos_parm
.ac
[0].aifsn
= aifs
;
1976 priv
->qos_data
.def_qos_parm
.ac
[0].edca_txop
= 0;
1977 priv
->qos_data
.def_qos_parm
.ac
[0].reserved1
= 0;
1979 if (priv
->qos_data
.qos_active
) {
1981 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
= cpu_to_le16(cw_min
);
1982 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
= cpu_to_le16(cw_max
);
1983 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 7;
1984 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1985 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1988 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1989 cpu_to_le16((cw_min
+ 1) / 2 - 1);
1990 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
1991 cpu_to_le16(cw_max
);
1992 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
1994 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1997 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1999 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2002 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2003 cpu_to_le16((cw_min
+ 1) / 4 - 1);
2004 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2005 cpu_to_le16((cw_max
+ 1) / 2 - 1);
2006 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2007 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2009 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2012 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2015 for (i
= 1; i
< 4; i
++) {
2016 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2017 cpu_to_le16(cw_min
);
2018 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2019 cpu_to_le16(cw_max
);
2020 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= aifs
;
2021 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
2022 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2025 IWL_DEBUG_QOS("set QoS to default \n");
2027 spin_unlock_irqrestore(&priv
->lock
, flags
);
2030 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
2032 unsigned long flags
;
2037 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2040 if (!priv
->qos_data
.qos_enable
)
2043 spin_lock_irqsave(&priv
->lock
, flags
);
2044 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
2046 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
2047 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
2048 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2049 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
2051 if (priv
->qos_data
.qos_active
)
2052 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2053 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
2055 spin_unlock_irqrestore(&priv
->lock
, flags
);
2057 if (force
|| iwl_is_associated(priv
)) {
2058 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2059 priv
->qos_data
.qos_active
);
2061 iwl_send_qos_params_command(priv
,
2062 &(priv
->qos_data
.def_qos_parm
));
2066 #endif /* CONFIG_IWLWIFI_QOS */
2068 * Power management (not Tx power!) functions
2070 #define MSEC_TO_USEC 1024
2072 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2073 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2074 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2075 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2076 __constant_cpu_to_le32(X1), \
2077 __constant_cpu_to_le32(X2), \
2078 __constant_cpu_to_le32(X3), \
2079 __constant_cpu_to_le32(X4)}
2082 /* default power management (not Tx power) table values */
2084 static struct iwl_power_vec_entry range_0
[IWL_POWER_AC
] = {
2085 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2086 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2087 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2088 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2089 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2090 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2094 static struct iwl_power_vec_entry range_1
[IWL_POWER_AC
] = {
2095 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2096 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2097 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2098 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2099 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2100 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2101 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2102 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2103 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2104 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2107 int iwl_power_init_handle(struct iwl_priv
*priv
)
2110 struct iwl_power_mgr
*pow_data
;
2111 int size
= sizeof(struct iwl_power_vec_entry
) * IWL_POWER_AC
;
2114 IWL_DEBUG_POWER("Initialize power \n");
2116 pow_data
= &(priv
->power_data
);
2118 memset(pow_data
, 0, sizeof(*pow_data
));
2120 pow_data
->active_index
= IWL_POWER_RANGE_0
;
2121 pow_data
->dtim_val
= 0xffff;
2123 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
2124 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
2126 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
2130 struct iwl_powertable_cmd
*cmd
;
2132 IWL_DEBUG_POWER("adjust power command flags\n");
2134 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
2135 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
2138 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
2140 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
2146 static int iwl_update_power_cmd(struct iwl_priv
*priv
,
2147 struct iwl_powertable_cmd
*cmd
, u32 mode
)
2152 struct iwl_power_vec_entry
*range
;
2154 struct iwl_power_mgr
*pow_data
;
2156 if (mode
> IWL_POWER_INDEX_5
) {
2157 IWL_DEBUG_POWER("Error invalid power mode \n");
2160 pow_data
= &(priv
->power_data
);
2162 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
2163 range
= &pow_data
->pwr_range_0
[0];
2165 range
= &pow_data
->pwr_range_1
[1];
2167 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl_powertable_cmd
));
2169 #ifdef IWL_MAC80211_DISABLE
2170 if (priv
->assoc_network
!= NULL
) {
2171 unsigned long flags
;
2173 period
= priv
->assoc_network
->tim
.tim_period
;
2175 #endif /*IWL_MAC80211_DISABLE */
2176 skip
= range
[mode
].no_dtim
;
2185 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2187 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
2188 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
2189 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2192 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
2193 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
2194 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
2197 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
2198 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
2199 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
2200 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2201 le32_to_cpu(cmd
->sleep_interval
[0]),
2202 le32_to_cpu(cmd
->sleep_interval
[1]),
2203 le32_to_cpu(cmd
->sleep_interval
[2]),
2204 le32_to_cpu(cmd
->sleep_interval
[3]),
2205 le32_to_cpu(cmd
->sleep_interval
[4]));
2210 static int iwl_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
2212 u32 final_mode
= mode
;
2214 struct iwl_powertable_cmd cmd
;
2216 /* If on battery, set to 3,
2217 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2218 * else user level */
2220 case IWL_POWER_BATTERY
:
2221 final_mode
= IWL_POWER_INDEX_3
;
2224 final_mode
= IWL_POWER_MODE_CAM
;
2231 cmd
.keep_alive_beacons
= 0;
2233 iwl_update_power_cmd(priv
, &cmd
, final_mode
);
2235 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
2237 if (final_mode
== IWL_POWER_MODE_CAM
)
2238 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
2240 set_bit(STATUS_POWER_PMI
, &priv
->status
);
2245 int iwl_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2247 /* Filter incoming packets to determine if they are targeted toward
2248 * this network, discarding packets coming from ourselves */
2249 switch (priv
->iw_mode
) {
2250 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
2251 /* packets from our adapter are dropped (echo) */
2252 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
2254 /* {broad,multi}cast packets to our IBSS go through */
2255 if (is_multicast_ether_addr(header
->addr1
))
2256 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
2257 /* packets to our adapter go through */
2258 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2259 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
2260 /* packets from our adapter are dropped (echo) */
2261 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
2263 /* {broad,multi}cast packets to our BSS go through */
2264 if (is_multicast_ether_addr(header
->addr1
))
2265 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
2266 /* packets to our adapter go through */
2267 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2273 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2275 const char *iwl_get_tx_fail_reason(u32 status
)
2277 switch (status
& TX_STATUS_MSK
) {
2278 case TX_STATUS_SUCCESS
:
2280 TX_STATUS_ENTRY(SHORT_LIMIT
);
2281 TX_STATUS_ENTRY(LONG_LIMIT
);
2282 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
2283 TX_STATUS_ENTRY(MGMNT_ABORT
);
2284 TX_STATUS_ENTRY(NEXT_FRAG
);
2285 TX_STATUS_ENTRY(LIFE_EXPIRE
);
2286 TX_STATUS_ENTRY(DEST_PS
);
2287 TX_STATUS_ENTRY(ABORTED
);
2288 TX_STATUS_ENTRY(BT_RETRY
);
2289 TX_STATUS_ENTRY(STA_INVALID
);
2290 TX_STATUS_ENTRY(FRAG_DROPPED
);
2291 TX_STATUS_ENTRY(TID_DISABLE
);
2292 TX_STATUS_ENTRY(FRAME_FLUSHED
);
2293 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
2294 TX_STATUS_ENTRY(TX_LOCKED
);
2295 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
2302 * iwl_scan_cancel - Cancel any currently executing HW scan
2304 * NOTE: priv->mutex is not required before calling this function
2306 static int iwl_scan_cancel(struct iwl_priv
*priv
)
2308 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2309 clear_bit(STATUS_SCANNING
, &priv
->status
);
2313 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2314 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2315 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2316 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
2317 queue_work(priv
->workqueue
, &priv
->abort_scan
);
2320 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2322 return test_bit(STATUS_SCANNING
, &priv
->status
);
2329 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2330 * @ms: amount of time to wait (in milliseconds) for scan to abort
2332 * NOTE: priv->mutex must be held before calling this function
2334 static int iwl_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
2336 unsigned long now
= jiffies
;
2339 ret
= iwl_scan_cancel(priv
);
2341 mutex_unlock(&priv
->mutex
);
2342 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
2343 test_bit(STATUS_SCANNING
, &priv
->status
))
2345 mutex_lock(&priv
->mutex
);
2347 return test_bit(STATUS_SCANNING
, &priv
->status
);
2353 static void iwl_sequence_reset(struct iwl_priv
*priv
)
2355 /* Reset ieee stats */
2357 /* We don't reset the net_device_stats (ieee->stats) on
2360 priv
->last_seq_num
= -1;
2361 priv
->last_frag_num
= -1;
2362 priv
->last_packet_time
= 0;
2364 iwl_scan_cancel(priv
);
2367 #define MAX_UCODE_BEACON_INTERVAL 4096
2368 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2370 static __le16
iwl_adjust_beacon_interval(u16 beacon_val
)
2373 u16 beacon_factor
= 0;
2376 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
2377 / MAX_UCODE_BEACON_INTERVAL
;
2378 new_val
= beacon_val
/ beacon_factor
;
2380 return cpu_to_le16(new_val
);
2383 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
2385 u64 interval_tm_unit
;
2387 unsigned long flags
;
2388 struct ieee80211_conf
*conf
= NULL
;
2391 conf
= ieee80211_get_hw_conf(priv
->hw
);
2393 spin_lock_irqsave(&priv
->lock
, flags
);
2394 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp1
);
2395 priv
->rxon_timing
.timestamp
.dw
[0] = cpu_to_le32(priv
->timestamp0
);
2397 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
2399 tsf
= priv
->timestamp1
;
2400 tsf
= ((tsf
<< 32) | priv
->timestamp0
);
2402 beacon_int
= priv
->beacon_int
;
2403 spin_unlock_irqrestore(&priv
->lock
, flags
);
2405 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
2406 if (beacon_int
== 0) {
2407 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
2408 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
2410 priv
->rxon_timing
.beacon_interval
=
2411 cpu_to_le16(beacon_int
);
2412 priv
->rxon_timing
.beacon_interval
=
2413 iwl_adjust_beacon_interval(
2414 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2417 priv
->rxon_timing
.atim_window
= 0;
2419 priv
->rxon_timing
.beacon_interval
=
2420 iwl_adjust_beacon_interval(conf
->beacon_int
);
2421 /* TODO: we need to get atim_window from upper stack
2422 * for now we set to 0 */
2423 priv
->rxon_timing
.atim_window
= 0;
2427 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
2428 result
= do_div(tsf
, interval_tm_unit
);
2429 priv
->rxon_timing
.beacon_init_val
=
2430 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
2433 ("beacon interval %d beacon timer %d beacon tim %d\n",
2434 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
2435 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
2436 le16_to_cpu(priv
->rxon_timing
.atim_window
));
2439 static int iwl_scan_initiate(struct iwl_priv
*priv
)
2441 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
2442 IWL_ERROR("APs don't scan.\n");
2446 if (!iwl_is_ready_rf(priv
)) {
2447 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2451 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2452 IWL_DEBUG_SCAN("Scan already in progress.\n");
2456 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2457 IWL_DEBUG_SCAN("Scan request while abort pending. "
2462 IWL_DEBUG_INFO("Starting scan...\n");
2463 priv
->scan_bands
= 2;
2464 set_bit(STATUS_SCANNING
, &priv
->status
);
2465 priv
->scan_start
= jiffies
;
2466 priv
->scan_pass_start
= priv
->scan_start
;
2468 queue_work(priv
->workqueue
, &priv
->request_scan
);
2473 static int iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
2475 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
2478 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
2480 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
2485 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
)
2487 if (phymode
== MODE_IEEE80211A
) {
2488 priv
->staging_rxon
.flags
&=
2489 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
2490 | RXON_FLG_CCK_MSK
);
2491 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2493 /* Copied from iwl_bg_post_associate() */
2494 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2495 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2497 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2499 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
2500 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2502 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
2503 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
2504 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
2509 * initilize rxon structure with default values fromm eeprom
2511 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
)
2513 const struct iwl_channel_info
*ch_info
;
2515 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2517 switch (priv
->iw_mode
) {
2518 case IEEE80211_IF_TYPE_AP
:
2519 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2522 case IEEE80211_IF_TYPE_STA
:
2523 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2524 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2527 case IEEE80211_IF_TYPE_IBSS
:
2528 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2529 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2530 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2531 RXON_FILTER_ACCEPT_GRP_MSK
;
2534 case IEEE80211_IF_TYPE_MNTR
:
2535 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2536 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2537 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2542 /* TODO: Figure out when short_preamble would be set and cache from
2544 if (!hw_to_local(priv
->hw
)->short_preamble
)
2545 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2547 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2550 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
,
2551 le16_to_cpu(priv
->staging_rxon
.channel
));
2554 ch_info
= &priv
->channel_info
[0];
2557 * in some case A channels are all non IBSS
2558 * in this case force B/G channel
2560 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2561 !(is_channel_ibss(ch_info
)))
2562 ch_info
= &priv
->channel_info
[0];
2564 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2565 if (is_channel_a_band(ch_info
))
2566 priv
->phymode
= MODE_IEEE80211A
;
2568 priv
->phymode
= MODE_IEEE80211G
;
2570 iwl_set_flags_for_phymode(priv
, priv
->phymode
);
2572 priv
->staging_rxon
.ofdm_basic_rates
=
2573 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2574 priv
->staging_rxon
.cck_basic_rates
=
2575 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2577 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
2578 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
2579 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2580 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
2581 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
2582 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
2583 iwl4965_set_rxon_chain(priv
);
2586 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
2588 if (!iwl_is_ready_rf(priv
))
2591 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2592 const struct iwl_channel_info
*ch_info
;
2594 ch_info
= iwl_get_channel_info(priv
,
2596 le16_to_cpu(priv
->staging_rxon
.channel
));
2598 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2599 IWL_ERROR("channel %d not IBSS channel\n",
2600 le16_to_cpu(priv
->staging_rxon
.channel
));
2605 cancel_delayed_work(&priv
->scan_check
);
2606 if (iwl_scan_cancel_timeout(priv
, 100)) {
2607 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2608 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2612 priv
->iw_mode
= mode
;
2614 iwl_connection_init_rx_config(priv
);
2615 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2617 iwl_clear_stations_table(priv
);
2619 iwl_commit_rxon(priv
);
2624 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2625 struct ieee80211_tx_control
*ctl
,
2626 struct iwl_cmd
*cmd
,
2627 struct sk_buff
*skb_frag
,
2630 struct iwl_hw_key
*keyinfo
= &priv
->stations
[ctl
->key_idx
].keyinfo
;
2632 switch (keyinfo
->alg
) {
2634 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2635 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2636 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2641 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2644 memcpy(cmd
->cmd
.tx
.tkip_mic
.byte
, skb_frag
->tail
- 8,
2647 memset(cmd
->cmd
.tx
.tkip_mic
.byte
, 0, 8);
2652 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2653 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2655 if (keyinfo
->keylen
== 13)
2656 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2658 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2660 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2661 "with key %d\n", ctl
->key_idx
);
2665 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2671 * handle build REPLY_TX command notification.
2673 static void iwl_build_tx_cmd_basic(struct iwl_priv
*priv
,
2674 struct iwl_cmd
*cmd
,
2675 struct ieee80211_tx_control
*ctrl
,
2676 struct ieee80211_hdr
*hdr
,
2677 int is_unicast
, u8 std_id
)
2680 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2681 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2683 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2684 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2685 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2686 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2687 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2688 if (ieee80211_is_probe_response(fc
) &&
2689 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2690 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2692 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2693 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2696 cmd
->cmd
.tx
.sta_id
= std_id
;
2697 if (ieee80211_get_morefrag(hdr
))
2698 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2700 qc
= ieee80211_get_qos_ctrl(hdr
);
2702 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2703 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2705 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2707 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2708 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2709 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2710 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2711 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2712 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2715 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2716 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2718 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2719 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2720 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2721 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2722 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2725 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2728 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2730 cmd
->cmd
.tx
.driver_txop
= 0;
2731 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2732 cmd
->cmd
.tx
.next_frame_len
= 0;
2735 static int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2738 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2739 DECLARE_MAC_BUF(mac
);
2741 /* If this frame is broadcast or not data then use the broadcast
2743 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2744 is_multicast_ether_addr(hdr
->addr1
))
2745 return priv
->hw_setting
.bcast_sta_id
;
2747 switch (priv
->iw_mode
) {
2749 /* If this frame is part of a BSS network (we're a station), then
2750 * we use the AP's station id */
2751 case IEEE80211_IF_TYPE_STA
:
2754 /* If we are an AP, then find the station, or use BCAST */
2755 case IEEE80211_IF_TYPE_AP
:
2756 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2757 if (sta_id
!= IWL_INVALID_STATION
)
2759 return priv
->hw_setting
.bcast_sta_id
;
2761 /* If this frame is part of a IBSS network, then we use the
2762 * target specific station id */
2763 case IEEE80211_IF_TYPE_IBSS
:
2764 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2765 if (sta_id
!= IWL_INVALID_STATION
)
2768 sta_id
= iwl_add_station(priv
, hdr
->addr1
, 0, CMD_ASYNC
);
2770 if (sta_id
!= IWL_INVALID_STATION
)
2773 IWL_DEBUG_DROP("Station %s not in station map. "
2774 "Defaulting to broadcast...\n",
2775 print_mac(mac
, hdr
->addr1
));
2776 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2777 return priv
->hw_setting
.bcast_sta_id
;
2780 IWL_WARNING("Unkown mode of operation: %d", priv
->iw_mode
);
2781 return priv
->hw_setting
.bcast_sta_id
;
2786 * start REPLY_TX command process
2788 static int iwl_tx_skb(struct iwl_priv
*priv
,
2789 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2791 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2792 struct iwl_tfd_frame
*tfd
;
2794 int txq_id
= ctl
->queue
;
2795 struct iwl_tx_queue
*txq
= NULL
;
2796 struct iwl_queue
*q
= NULL
;
2797 dma_addr_t phys_addr
;
2798 dma_addr_t txcmd_phys
;
2799 struct iwl_cmd
*out_cmd
= NULL
;
2800 u16 len
, idx
, len_org
;
2801 u8 id
, hdr_len
, unicast
;
2806 u8 wait_write_ptr
= 0;
2807 unsigned long flags
;
2810 spin_lock_irqsave(&priv
->lock
, flags
);
2811 if (iwl_is_rfkill(priv
)) {
2812 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2816 if (!priv
->interface_id
) {
2817 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2821 if ((ctl
->tx_rate
& 0xFF) == IWL_INVALID_RATE
) {
2822 IWL_ERROR("ERROR: No TX rate available.\n");
2826 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2829 fc
= le16_to_cpu(hdr
->frame_control
);
2831 #ifdef CONFIG_IWLWIFI_DEBUG
2832 if (ieee80211_is_auth(fc
))
2833 IWL_DEBUG_TX("Sending AUTH frame\n");
2834 else if (ieee80211_is_assoc_request(fc
))
2835 IWL_DEBUG_TX("Sending ASSOC frame\n");
2836 else if (ieee80211_is_reassoc_request(fc
))
2837 IWL_DEBUG_TX("Sending REASSOC frame\n");
2840 if (!iwl_is_associated(priv
) &&
2841 ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
)) {
2842 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2846 spin_unlock_irqrestore(&priv
->lock
, flags
);
2848 hdr_len
= ieee80211_get_hdrlen(fc
);
2849 sta_id
= iwl_get_sta_id(priv
, hdr
);
2850 if (sta_id
== IWL_INVALID_STATION
) {
2851 DECLARE_MAC_BUF(mac
);
2853 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2854 print_mac(mac
, hdr
->addr1
));
2858 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2860 qc
= ieee80211_get_qos_ctrl(hdr
);
2862 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2863 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2865 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2867 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2869 #ifdef CONFIG_IWLWIFI_HT
2870 #ifdef CONFIG_IWLWIFI_HT_AGG
2871 /* aggregation is on for this <sta,tid> */
2872 if (ctl
->flags
& IEEE80211_TXCTL_HT_MPDU_AGG
)
2873 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2874 #endif /* CONFIG_IWLWIFI_HT_AGG */
2875 #endif /* CONFIG_IWLWIFI_HT */
2877 txq
= &priv
->txq
[txq_id
];
2880 spin_lock_irqsave(&priv
->lock
, flags
);
2882 tfd
= &txq
->bd
[q
->first_empty
];
2883 memset(tfd
, 0, sizeof(*tfd
));
2884 control_flags
= (u32
*) tfd
;
2885 idx
= get_cmd_index(q
, q
->first_empty
, 0);
2887 memset(&(txq
->txb
[q
->first_empty
]), 0, sizeof(struct iwl_tx_info
));
2888 txq
->txb
[q
->first_empty
].skb
[0] = skb
;
2889 memcpy(&(txq
->txb
[q
->first_empty
].status
.control
),
2890 ctl
, sizeof(struct ieee80211_tx_control
));
2891 out_cmd
= &txq
->cmd
[idx
];
2892 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2893 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2894 out_cmd
->hdr
.cmd
= REPLY_TX
;
2895 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2896 INDEX_TO_SEQ(q
->first_empty
)));
2897 /* copy frags header */
2898 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2900 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2901 len
= priv
->hw_setting
.tx_cmd_len
+
2902 sizeof(struct iwl_cmd_header
) + hdr_len
;
2905 len
= (len
+ 3) & ~3;
2912 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2913 offsetof(struct iwl_cmd
, hdr
);
2915 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2917 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2918 iwl_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, 0);
2920 /* 802.11 null functions have no payload... */
2921 len
= skb
->len
- hdr_len
;
2923 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2924 len
, PCI_DMA_TODEVICE
);
2925 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2929 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2931 len
= (u16
)skb
->len
;
2932 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2934 /* TODO need this for burst mode later on */
2935 iwl_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2937 /* set is_hcca to 0; it probably will never be implemented */
2938 iwl_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2940 iwl4965_tx_cmd(priv
, out_cmd
, sta_id
, txcmd_phys
,
2941 hdr
, hdr_len
, ctl
, NULL
);
2943 if (!ieee80211_get_morefrag(hdr
)) {
2944 txq
->need_update
= 1;
2946 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2947 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2951 txq
->need_update
= 0;
2954 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2955 sizeof(out_cmd
->cmd
.tx
));
2957 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2958 ieee80211_get_hdrlen(fc
));
2960 iwl4965_tx_queue_update_wr_ptr(priv
, txq
, len
);
2962 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, q
->n_bd
);
2963 rc
= iwl_tx_queue_update_write_ptr(priv
, txq
);
2964 spin_unlock_irqrestore(&priv
->lock
, flags
);
2969 if ((iwl_queue_space(q
) < q
->high_mark
)
2970 && priv
->mac80211_registered
) {
2971 if (wait_write_ptr
) {
2972 spin_lock_irqsave(&priv
->lock
, flags
);
2973 txq
->need_update
= 1;
2974 iwl_tx_queue_update_write_ptr(priv
, txq
);
2975 spin_unlock_irqrestore(&priv
->lock
, flags
);
2978 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2984 spin_unlock_irqrestore(&priv
->lock
, flags
);
2989 static void iwl_set_rate(struct iwl_priv
*priv
)
2991 const struct ieee80211_hw_mode
*hw
= NULL
;
2992 struct ieee80211_rate
*rate
;
2995 hw
= iwl_get_hw_mode(priv
, priv
->phymode
);
2997 priv
->active_rate
= 0;
2998 priv
->active_rate_basic
= 0;
3000 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3001 hw
->mode
== MODE_IEEE80211A
?
3002 'a' : ((hw
->mode
== MODE_IEEE80211B
) ? 'b' : 'g'));
3004 for (i
= 0; i
< hw
->num_rates
; i
++) {
3005 rate
= &(hw
->rates
[i
]);
3006 if ((rate
->val
< IWL_RATE_COUNT
) &&
3007 (rate
->flags
& IEEE80211_RATE_SUPPORTED
)) {
3008 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3009 rate
->val
, iwl_rates
[rate
->val
].plcp
,
3010 (rate
->flags
& IEEE80211_RATE_BASIC
) ?
3012 priv
->active_rate
|= (1 << rate
->val
);
3013 if (rate
->flags
& IEEE80211_RATE_BASIC
)
3014 priv
->active_rate_basic
|= (1 << rate
->val
);
3016 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3017 rate
->val
, iwl_rates
[rate
->val
].plcp
);
3020 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3021 priv
->active_rate
, priv
->active_rate_basic
);
3024 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3025 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3028 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
3029 priv
->staging_rxon
.cck_basic_rates
=
3030 ((priv
->active_rate_basic
&
3031 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
3033 priv
->staging_rxon
.cck_basic_rates
=
3034 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
3036 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
3037 priv
->staging_rxon
.ofdm_basic_rates
=
3038 ((priv
->active_rate_basic
&
3039 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
3040 IWL_FIRST_OFDM_RATE
) & 0xFF;
3042 priv
->staging_rxon
.ofdm_basic_rates
=
3043 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
3046 static void iwl_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
3048 unsigned long flags
;
3050 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
3053 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3054 disable_radio
? "OFF" : "ON");
3056 if (disable_radio
) {
3057 iwl_scan_cancel(priv
);
3058 /* FIXME: This is a workaround for AP */
3059 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
3060 spin_lock_irqsave(&priv
->lock
, flags
);
3061 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3062 CSR_UCODE_SW_BIT_RFKILL
);
3063 spin_unlock_irqrestore(&priv
->lock
, flags
);
3064 iwl_send_card_state(priv
, CARD_STATE_CMD_DISABLE
, 0);
3065 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3070 spin_lock_irqsave(&priv
->lock
, flags
);
3071 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
3073 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3074 spin_unlock_irqrestore(&priv
->lock
, flags
);
3079 spin_lock_irqsave(&priv
->lock
, flags
);
3080 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3081 if (!iwl_grab_restricted_access(priv
))
3082 iwl_release_restricted_access(priv
);
3083 spin_unlock_irqrestore(&priv
->lock
, flags
);
3085 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
3086 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3087 "disabled by HW switch\n");
3091 queue_work(priv
->workqueue
, &priv
->restart
);
3095 void iwl_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
3096 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
3099 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
3101 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
3104 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
3107 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
3108 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3109 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3110 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3111 RX_RES_STATUS_BAD_ICV_MIC
)
3112 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
3113 case RX_RES_STATUS_SEC_TYPE_WEP
:
3114 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3115 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3116 RX_RES_STATUS_DECRYPT_OK
) {
3117 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3118 stats
->flag
|= RX_FLAG_DECRYPTED
;
3127 void iwl_handle_data_packet_monitor(struct iwl_priv
*priv
,
3128 struct iwl_rx_mem_buffer
*rxb
,
3129 void *data
, short len
,
3130 struct ieee80211_rx_status
*stats
,
3133 struct iwl_rt_rx_hdr
*iwl_rt
;
3135 /* First cache any information we need before we overwrite
3136 * the information provided in the skb from the hardware */
3137 s8 signal
= stats
->ssi
;
3139 int rate
= stats
->rate
;
3140 u64 tsf
= stats
->mactime
;
3141 __le16 phy_flags_hw
= cpu_to_le16(phy_flags
);
3143 /* We received data from the HW, so stop the watchdog */
3144 if (len
> IWL_RX_BUF_SIZE
- sizeof(*iwl_rt
)) {
3145 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3149 /* copy the frame data to write after where the radiotap header goes */
3150 iwl_rt
= (void *)rxb
->skb
->data
;
3151 memmove(iwl_rt
->payload
, data
, len
);
3153 iwl_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3154 iwl_rt
->rt_hdr
.it_pad
= 0; /* always good to zero */
3156 /* total header + data */
3157 iwl_rt
->rt_hdr
.it_len
= cpu_to_le16(sizeof(*iwl_rt
));
3159 /* Set the size of the skb to the size of the frame */
3160 skb_put(rxb
->skb
, sizeof(*iwl_rt
) + len
);
3162 /* Big bitfield of all the fields we provide in radiotap */
3163 iwl_rt
->rt_hdr
.it_present
=
3164 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3165 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3166 (1 << IEEE80211_RADIOTAP_RATE
) |
3167 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3168 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3169 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3170 (1 << IEEE80211_RADIOTAP_ANTENNA
));
3172 /* Zero the flags, we'll add to them as we go */
3173 iwl_rt
->rt_flags
= 0;
3175 iwl_rt
->rt_tsf
= cpu_to_le64(tsf
);
3177 /* Convert to dBm */
3178 iwl_rt
->rt_dbmsignal
= signal
;
3179 iwl_rt
->rt_dbmnoise
= noise
;
3181 /* Convert the channel frequency and set the flags */
3182 iwl_rt
->rt_channelMHz
= cpu_to_le16(stats
->freq
);
3183 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3184 iwl_rt
->rt_chbitmask
=
3185 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_5GHZ
));
3186 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3187 iwl_rt
->rt_chbitmask
=
3188 cpu_to_le16((IEEE80211_CHAN_CCK
| IEEE80211_CHAN_2GHZ
));
3190 iwl_rt
->rt_chbitmask
=
3191 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_2GHZ
));
3193 rate
= iwl_rate_index_from_plcp(rate
);
3195 iwl_rt
->rt_rate
= 0;
3197 iwl_rt
->rt_rate
= iwl_rates
[rate
].ieee
;
3199 /* antenna number */
3200 iwl_rt
->rt_antenna
=
3201 le16_to_cpu(phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
3203 /* set the preamble flag if we have it */
3204 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3205 iwl_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3207 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb
->skb
->len
);
3209 stats
->flag
|= RX_FLAG_RADIOTAP
;
3210 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3215 #define IWL_PACKET_RETRY_TIME HZ
3217 int is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
3219 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
3220 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
3221 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
3222 u16
*last_seq
, *last_frag
;
3223 unsigned long *last_time
;
3225 switch (priv
->iw_mode
) {
3226 case IEEE80211_IF_TYPE_IBSS
:{
3227 struct list_head
*p
;
3228 struct iwl_ibss_seq
*entry
= NULL
;
3229 u8
*mac
= header
->addr2
;
3230 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
3232 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
3234 list_entry(p
, struct iwl_ibss_seq
, list
);
3235 if (!compare_ether_addr(entry
->mac
, mac
))
3238 if (p
== &priv
->ibss_mac_hash
[index
]) {
3239 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
3242 ("Cannot malloc new mac entry\n");
3245 memcpy(entry
->mac
, mac
, ETH_ALEN
);
3246 entry
->seq_num
= seq
;
3247 entry
->frag_num
= frag
;
3248 entry
->packet_time
= jiffies
;
3249 list_add(&entry
->list
,
3250 &priv
->ibss_mac_hash
[index
]);
3253 last_seq
= &entry
->seq_num
;
3254 last_frag
= &entry
->frag_num
;
3255 last_time
= &entry
->packet_time
;
3258 case IEEE80211_IF_TYPE_STA
:
3259 last_seq
= &priv
->last_seq_num
;
3260 last_frag
= &priv
->last_frag_num
;
3261 last_time
= &priv
->last_packet_time
;
3266 if ((*last_seq
== seq
) &&
3267 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
3268 if (*last_frag
== frag
)
3270 if (*last_frag
+ 1 != frag
)
3271 /* out-of-order fragment */
3277 *last_time
= jiffies
;
3284 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3286 #include "iwl-spectrum.h"
3288 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3289 #define BEACON_TIME_MASK_HIGH 0xFF000000
3290 #define TIME_UNIT 1024
3293 * extended beacon time format
3294 * time in usec will be changed into a 32-bit value in 8:24 format
3295 * the high 1 byte is the beacon counts
3296 * the lower 3 bytes is the time in usec within one beacon interval
3299 static u32
iwl_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
3303 u32 interval
= beacon_interval
* 1024;
3305 if (!interval
|| !usec
)
3308 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
3309 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
3311 return (quot
<< 24) + rem
;
3314 /* base is usually what we get from ucode with each received frame,
3315 * the same as HW timer counter counting down
3318 static __le32
iwl_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
3320 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
3321 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
3322 u32 interval
= beacon_interval
* TIME_UNIT
;
3323 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
3324 (addon
& BEACON_TIME_MASK_HIGH
);
3326 if (base_low
> addon_low
)
3327 res
+= base_low
- addon_low
;
3328 else if (base_low
< addon_low
) {
3329 res
+= interval
+ base_low
- addon_low
;
3334 return cpu_to_le32(res
);
3337 static int iwl_get_measurement(struct iwl_priv
*priv
,
3338 struct ieee80211_measurement_params
*params
,
3341 struct iwl_spectrum_cmd spectrum
;
3342 struct iwl_rx_packet
*res
;
3343 struct iwl_host_cmd cmd
= {
3344 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
3345 .data
= (void *)&spectrum
,
3346 .meta
.flags
= CMD_WANT_SKB
,
3348 u32 add_time
= le64_to_cpu(params
->start_time
);
3350 int spectrum_resp_status
;
3351 int duration
= le16_to_cpu(params
->duration
);
3353 if (iwl_is_associated(priv
))
3355 iwl_usecs_to_beacons(
3356 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
3357 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3359 memset(&spectrum
, 0, sizeof(spectrum
));
3361 spectrum
.channel_count
= cpu_to_le16(1);
3363 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
3364 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
3365 cmd
.len
= sizeof(spectrum
);
3366 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
3368 if (iwl_is_associated(priv
))
3369 spectrum
.start_time
=
3370 iwl_add_beacon_time(priv
->last_beacon_time
,
3372 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3374 spectrum
.start_time
= 0;
3376 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
3377 spectrum
.channels
[0].channel
= params
->channel
;
3378 spectrum
.channels
[0].type
= type
;
3379 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
3380 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
3381 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
3383 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3387 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
3388 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
3389 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3393 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
3394 switch (spectrum_resp_status
) {
3395 case 0: /* Command will be handled */
3396 if (res
->u
.spectrum
.id
!= 0xff) {
3398 ("Replaced existing measurement: %d\n",
3399 res
->u
.spectrum
.id
);
3400 priv
->measurement_status
&= ~MEASUREMENT_READY
;
3402 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
3406 case 1: /* Command will not be handled */
3411 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
3417 static void iwl_txstatus_to_ieee(struct iwl_priv
*priv
,
3418 struct iwl_tx_info
*tx_sta
)
3421 tx_sta
->status
.ack_signal
= 0;
3422 tx_sta
->status
.excessive_retries
= 0;
3423 tx_sta
->status
.queue_length
= 0;
3424 tx_sta
->status
.queue_number
= 0;
3427 ieee80211_tx_status_irqsafe(priv
->hw
,
3428 tx_sta
->skb
[0], &(tx_sta
->status
));
3430 ieee80211_tx_status(priv
->hw
,
3431 tx_sta
->skb
[0], &(tx_sta
->status
));
3433 tx_sta
->skb
[0] = NULL
;
3437 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3439 * When FW advances 'R' index, all entries between old and
3440 * new 'R' index need to be reclaimed. As result, some free space
3441 * forms. If there is enough free space (> low mark), wake Tx queue.
3443 int iwl_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
3445 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3446 struct iwl_queue
*q
= &txq
->q
;
3449 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
3450 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3451 "is out of range [0-%d] %d %d.\n", txq_id
,
3452 index
, q
->n_bd
, q
->first_empty
, q
->last_used
);
3456 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
3457 q
->last_used
!= index
;
3458 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
)) {
3459 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
3460 iwl_txstatus_to_ieee(priv
,
3461 &(txq
->txb
[txq
->q
.last_used
]));
3462 iwl_hw_txq_free_tfd(priv
, txq
);
3463 } else if (nfreed
> 1) {
3464 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
3465 q
->first_empty
, q
->last_used
);
3466 queue_work(priv
->workqueue
, &priv
->restart
);
3471 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
3472 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
3473 priv
->mac80211_registered
)
3474 ieee80211_wake_queue(priv
->hw
, txq_id
);
3480 static int iwl_is_tx_success(u32 status
)
3482 status
&= TX_STATUS_MSK
;
3483 return (status
== TX_STATUS_SUCCESS
)
3484 || (status
== TX_STATUS_DIRECT_DONE
);
3487 /******************************************************************************
3489 * Generic RX handler implementations
3491 ******************************************************************************/
3492 #ifdef CONFIG_IWLWIFI_HT
3493 #ifdef CONFIG_IWLWIFI_HT_AGG
3495 static inline int iwl_get_ra_sta_id(struct iwl_priv
*priv
,
3496 struct ieee80211_hdr
*hdr
)
3498 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
3501 u8
*da
= ieee80211_get_DA(hdr
);
3502 return iwl_hw_find_station(priv
, da
);
3506 static struct ieee80211_hdr
*iwl_tx_queue_get_hdr(
3507 struct iwl_priv
*priv
, int txq_id
, int idx
)
3509 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
3510 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
3511 txb
[idx
].skb
[0]->data
;
3515 static inline u32
iwl_get_scd_ssn(struct iwl_tx_resp
*tx_resp
)
3517 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
3518 tx_resp
->frame_count
);
3519 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
3522 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
3523 struct iwl_ht_agg
*agg
,
3524 struct iwl_tx_resp
*tx_resp
,
3528 __le32
*frame_status
= &tx_resp
->status
;
3529 struct ieee80211_tx_status
*tx_status
= NULL
;
3530 struct ieee80211_hdr
*hdr
= NULL
;
3535 if (agg
->wait_for_ba
)
3536 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3538 agg
->frame_count
= tx_resp
->frame_count
;
3539 agg
->start_idx
= start_idx
;
3540 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3541 agg
->bitmap0
= agg
->bitmap1
= 0;
3543 if (agg
->frame_count
== 1) {
3544 struct iwl_tx_queue
*txq
;
3545 status
= le32_to_cpu(frame_status
[0]);
3547 txq_id
= agg
->txq_id
;
3548 txq
= &priv
->txq
[txq_id
];
3549 /* FIXME: code repetition */
3550 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3551 agg
->frame_count
, agg
->start_idx
);
3553 tx_status
= &(priv
->txq
[txq_id
].txb
[txq
->q
.last_used
].status
);
3554 tx_status
->retry_count
= tx_resp
->failure_frame
;
3555 tx_status
->queue_number
= status
& 0xff;
3556 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3557 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3559 tx_status
->flags
= iwl_is_tx_success(status
)?
3560 IEEE80211_TX_STATUS_ACK
: 0;
3561 tx_status
->control
.tx_rate
=
3562 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3563 /* FIXME: code repetition end */
3565 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3566 status
& 0xff, tx_resp
->failure_frame
);
3567 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3568 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
3570 agg
->wait_for_ba
= 0;
3573 int start
= agg
->start_idx
;
3575 for (i
= 0; i
< agg
->frame_count
; i
++) {
3577 status
= le32_to_cpu(frame_status
[i
]);
3579 idx
= SEQ_TO_INDEX(seq
);
3580 txq_id
= SEQ_TO_QUEUE(seq
);
3582 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
3583 AGG_TX_STATE_ABORT_MSK
))
3586 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3587 agg
->frame_count
, txq_id
, idx
);
3589 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
3591 sc
= le16_to_cpu(hdr
->seq_ctrl
);
3592 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
3593 IWL_ERROR("BUG_ON idx doesn't match seq control"
3594 " idx=%d, seq_idx=%d, seq=%d\n",
3600 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3601 i
, idx
, SEQ_TO_SN(sc
));
3605 sh
= (start
- idx
) + 0xff;
3606 bitmap
= bitmap
<< sh
;
3609 } else if (sh
< -64)
3610 sh
= 0xff - (start
- idx
);
3614 bitmap
= bitmap
<< sh
;
3617 bitmap
|= (1 << sh
);
3618 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3619 start
, (u32
)(bitmap
& 0xFFFFFFFF));
3622 agg
->bitmap0
= bitmap
& 0xFFFFFFFF;
3623 agg
->bitmap1
= bitmap
>> 32;
3624 agg
->start_idx
= start
;
3625 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3626 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3627 agg
->frame_count
, agg
->start_idx
,
3631 agg
->wait_for_ba
= 1;
3638 static void iwl_rx_reply_tx(struct iwl_priv
*priv
,
3639 struct iwl_rx_mem_buffer
*rxb
)
3641 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3642 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3643 int txq_id
= SEQ_TO_QUEUE(sequence
);
3644 int index
= SEQ_TO_INDEX(sequence
);
3645 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3646 struct ieee80211_tx_status
*tx_status
;
3647 struct iwl_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3648 u32 status
= le32_to_cpu(tx_resp
->status
);
3649 #ifdef CONFIG_IWLWIFI_HT
3650 #ifdef CONFIG_IWLWIFI_HT_AGG
3655 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3656 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3657 "is out of range [0-%d] %d %d\n", txq_id
,
3658 index
, txq
->q
.n_bd
, txq
->q
.first_empty
,
3663 #ifdef CONFIG_IWLWIFI_HT
3664 #ifdef CONFIG_IWLWIFI_HT_AGG
3665 if (txq
->sched_retry
) {
3666 const u32 scd_ssn
= iwl_get_scd_ssn(tx_resp
);
3667 struct ieee80211_hdr
*hdr
=
3668 iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
3669 struct iwl_ht_agg
*agg
= NULL
;
3670 __le16
*qc
= ieee80211_get_qos_ctrl(hdr
);
3673 IWL_ERROR("BUG_ON qc is null!!!!\n");
3677 tid
= le16_to_cpu(*qc
) & 0xf;
3679 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
3680 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
3681 IWL_ERROR("Station not known for\n");
3685 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
3687 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, index
);
3689 if ((tx_resp
->frame_count
== 1) &&
3690 !iwl_is_tx_success(status
)) {
3691 /* TODO: send BAR */
3694 if ((txq
->q
.last_used
!= (scd_ssn
& 0xff))) {
3695 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
3696 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3697 "%d index %d\n", scd_ssn
, index
);
3698 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3701 #endif /* CONFIG_IWLWIFI_HT_AGG */
3702 #endif /* CONFIG_IWLWIFI_HT */
3703 tx_status
= &(txq
->txb
[txq
->q
.last_used
].status
);
3705 tx_status
->retry_count
= tx_resp
->failure_frame
;
3706 tx_status
->queue_number
= status
;
3707 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3708 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3711 iwl_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3713 tx_status
->control
.tx_rate
=
3714 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3716 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3717 "retries %d\n", txq_id
, iwl_get_tx_fail_reason(status
),
3718 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
3719 tx_resp
->failure_frame
);
3721 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3723 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3724 #ifdef CONFIG_IWLWIFI_HT
3725 #ifdef CONFIG_IWLWIFI_HT_AGG
3727 #endif /* CONFIG_IWLWIFI_HT_AGG */
3728 #endif /* CONFIG_IWLWIFI_HT */
3730 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3731 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3735 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
3736 struct iwl_rx_mem_buffer
*rxb
)
3738 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3739 struct iwl_alive_resp
*palive
;
3740 struct delayed_work
*pwork
;
3742 palive
= &pkt
->u
.alive_frame
;
3744 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3746 palive
->is_valid
, palive
->ver_type
,
3747 palive
->ver_subtype
);
3749 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3750 IWL_DEBUG_INFO("Initialization Alive received.\n");
3751 memcpy(&priv
->card_alive_init
,
3752 &pkt
->u
.alive_frame
,
3753 sizeof(struct iwl_init_alive_resp
));
3754 pwork
= &priv
->init_alive_start
;
3756 IWL_DEBUG_INFO("Runtime Alive received.\n");
3757 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3758 sizeof(struct iwl_alive_resp
));
3759 pwork
= &priv
->alive_start
;
3762 /* We delay the ALIVE response by 5ms to
3763 * give the HW RF Kill time to activate... */
3764 if (palive
->is_valid
== UCODE_VALID_OK
)
3765 queue_delayed_work(priv
->workqueue
, pwork
,
3766 msecs_to_jiffies(5));
3768 IWL_WARNING("uCode did not respond OK.\n");
3771 static void iwl_rx_reply_add_sta(struct iwl_priv
*priv
,
3772 struct iwl_rx_mem_buffer
*rxb
)
3774 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3776 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3780 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
3781 struct iwl_rx_mem_buffer
*rxb
)
3783 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3785 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3786 "seq 0x%04X ser 0x%08X\n",
3787 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3788 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3789 pkt
->u
.err_resp
.cmd_id
,
3790 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3791 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3794 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3796 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3798 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3799 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3800 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3801 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3802 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3803 rxon
->channel
= csa
->channel
;
3804 priv
->staging_rxon
.channel
= csa
->channel
;
3807 static void iwl_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3808 struct iwl_rx_mem_buffer
*rxb
)
3810 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3811 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3812 struct iwl_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3814 if (!report
->state
) {
3815 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3816 "Spectrum Measure Notification: Start\n");
3820 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3821 priv
->measurement_status
|= MEASUREMENT_READY
;
3825 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3826 struct iwl_rx_mem_buffer
*rxb
)
3828 #ifdef CONFIG_IWLWIFI_DEBUG
3829 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3830 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3831 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3832 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3836 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3837 struct iwl_rx_mem_buffer
*rxb
)
3839 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3840 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3841 "notification for %s:\n",
3842 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3843 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3846 static void iwl_bg_beacon_update(struct work_struct
*work
)
3848 struct iwl_priv
*priv
=
3849 container_of(work
, struct iwl_priv
, beacon_update
);
3850 struct sk_buff
*beacon
;
3852 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3853 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->interface_id
, NULL
);
3856 IWL_ERROR("update beacon failed\n");
3860 mutex_lock(&priv
->mutex
);
3861 /* new beacon skb is allocated every time; dispose previous.*/
3862 if (priv
->ibss_beacon
)
3863 dev_kfree_skb(priv
->ibss_beacon
);
3865 priv
->ibss_beacon
= beacon
;
3866 mutex_unlock(&priv
->mutex
);
3868 iwl_send_beacon_cmd(priv
);
3871 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
3872 struct iwl_rx_mem_buffer
*rxb
)
3874 #ifdef CONFIG_IWLWIFI_DEBUG
3875 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3876 struct iwl_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3877 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3879 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3880 "tsf %d %d rate %d\n",
3881 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3882 beacon
->beacon_notify_hdr
.failure_frame
,
3883 le32_to_cpu(beacon
->ibss_mgr_status
),
3884 le32_to_cpu(beacon
->high_tsf
),
3885 le32_to_cpu(beacon
->low_tsf
), rate
);
3888 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3889 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3890 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3893 /* Service response to REPLY_SCAN_CMD (0x80) */
3894 static void iwl_rx_reply_scan(struct iwl_priv
*priv
,
3895 struct iwl_rx_mem_buffer
*rxb
)
3897 #ifdef CONFIG_IWLWIFI_DEBUG
3898 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3899 struct iwl_scanreq_notification
*notif
=
3900 (struct iwl_scanreq_notification
*)pkt
->u
.raw
;
3902 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3906 /* Service SCAN_START_NOTIFICATION (0x82) */
3907 static void iwl_rx_scan_start_notif(struct iwl_priv
*priv
,
3908 struct iwl_rx_mem_buffer
*rxb
)
3910 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3911 struct iwl_scanstart_notification
*notif
=
3912 (struct iwl_scanstart_notification
*)pkt
->u
.raw
;
3913 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3914 IWL_DEBUG_SCAN("Scan start: "
3916 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3918 notif
->band
? "bg" : "a",
3920 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3923 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3924 static void iwl_rx_scan_results_notif(struct iwl_priv
*priv
,
3925 struct iwl_rx_mem_buffer
*rxb
)
3927 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3928 struct iwl_scanresults_notification
*notif
=
3929 (struct iwl_scanresults_notification
*)pkt
->u
.raw
;
3931 IWL_DEBUG_SCAN("Scan ch.res: "
3933 "(TSF: 0x%08X:%08X) - %d "
3934 "elapsed=%lu usec (%dms since last)\n",
3936 notif
->band
? "bg" : "a",
3937 le32_to_cpu(notif
->tsf_high
),
3938 le32_to_cpu(notif
->tsf_low
),
3939 le32_to_cpu(notif
->statistics
[0]),
3940 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3941 jiffies_to_msecs(elapsed_jiffies
3942 (priv
->last_scan_jiffies
, jiffies
)));
3944 priv
->last_scan_jiffies
= jiffies
;
3947 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3948 static void iwl_rx_scan_complete_notif(struct iwl_priv
*priv
,
3949 struct iwl_rx_mem_buffer
*rxb
)
3951 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3952 struct iwl_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3954 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3955 scan_notif
->scanned_channels
,
3956 scan_notif
->tsf_low
,
3957 scan_notif
->tsf_high
, scan_notif
->status
);
3959 /* The HW is no longer scanning */
3960 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3962 /* The scan completion notification came in, so kill that timer... */
3963 cancel_delayed_work(&priv
->scan_check
);
3965 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3966 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3967 jiffies_to_msecs(elapsed_jiffies
3968 (priv
->scan_pass_start
, jiffies
)));
3970 /* Remove this scanned band from the list
3971 * of pending bands to scan */
3974 /* If a request to abort was given, or the scan did not succeed
3975 * then we reset the scan state machine and terminate,
3976 * re-queuing another scan if one has been requested */
3977 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3978 IWL_DEBUG_INFO("Aborted scan completed.\n");
3979 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3981 /* If there are more bands on this scan pass reschedule */
3982 if (priv
->scan_bands
> 0)
3986 priv
->last_scan_jiffies
= jiffies
;
3987 IWL_DEBUG_INFO("Setting scan to off\n");
3989 clear_bit(STATUS_SCANNING
, &priv
->status
);
3991 IWL_DEBUG_INFO("Scan took %dms\n",
3992 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
3994 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3999 priv
->scan_pass_start
= jiffies
;
4000 queue_work(priv
->workqueue
, &priv
->request_scan
);
4003 /* Handle notification from uCode that card's power state is changing
4004 * due to software, hardware, or critical temperature RFKILL */
4005 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
4006 struct iwl_rx_mem_buffer
*rxb
)
4008 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4009 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
4010 unsigned long status
= priv
->status
;
4012 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4013 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
4014 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
4016 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
4017 RF_CARD_DISABLED
)) {
4019 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4020 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4022 if (!iwl_grab_restricted_access(priv
)) {
4023 iwl_write_restricted(
4024 priv
, HBUS_TARG_MBX_C
,
4025 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4027 iwl_release_restricted_access(priv
);
4030 if (!(flags
& RXON_CARD_DISABLED
)) {
4031 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
4032 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4033 if (!iwl_grab_restricted_access(priv
)) {
4034 iwl_write_restricted(
4035 priv
, HBUS_TARG_MBX_C
,
4036 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4038 iwl_release_restricted_access(priv
);
4042 if (flags
& RF_CARD_DISABLED
) {
4043 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4044 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
4045 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4046 if (!iwl_grab_restricted_access(priv
))
4047 iwl_release_restricted_access(priv
);
4051 if (flags
& HW_CARD_DISABLED
)
4052 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4054 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4057 if (flags
& SW_CARD_DISABLED
)
4058 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4060 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4062 if (!(flags
& RXON_CARD_DISABLED
))
4063 iwl_scan_cancel(priv
);
4065 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
4066 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
4067 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
4068 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
4069 queue_work(priv
->workqueue
, &priv
->rf_kill
);
4071 wake_up_interruptible(&priv
->wait_command_queue
);
4075 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4077 * Setup the RX handlers for each of the reply types sent from the uCode
4080 * This function chains into the hardware specific files for them to setup
4081 * any hardware specific handlers as well.
4083 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
4085 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
4086 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl_rx_reply_add_sta
;
4087 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
4088 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
4089 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
4090 iwl_rx_spectrum_measure_notif
;
4091 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
4092 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
4093 iwl_rx_pm_debug_statistics_notif
;
4094 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
4096 /* NOTE: iwl_rx_statistics is different based on whether
4097 * the build is for the 3945 or the 4965. See the
4098 * corresponding implementation in iwl-XXXX.c
4100 * The same handler is used for both the REPLY to a
4101 * discrete statistics request from the host as well as
4102 * for the periodic statistics notification from the uCode
4104 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_hw_rx_statistics
;
4105 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_hw_rx_statistics
;
4107 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl_rx_reply_scan
;
4108 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl_rx_scan_start_notif
;
4109 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
4110 iwl_rx_scan_results_notif
;
4111 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
4112 iwl_rx_scan_complete_notif
;
4113 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
4114 priv
->rx_handlers
[REPLY_TX
] = iwl_rx_reply_tx
;
4116 /* Setup hardware specific Rx handlers */
4117 iwl_hw_rx_handler_setup(priv
);
4121 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4122 * @rxb: Rx buffer to reclaim
4124 * If an Rx buffer has an async callback associated with it the callback
4125 * will be executed. The attached skb (if present) will only be freed
4126 * if the callback returns 1
4128 static void iwl_tx_cmd_complete(struct iwl_priv
*priv
,
4129 struct iwl_rx_mem_buffer
*rxb
)
4131 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4132 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
4133 int txq_id
= SEQ_TO_QUEUE(sequence
);
4134 int index
= SEQ_TO_INDEX(sequence
);
4135 int huge
= sequence
& SEQ_HUGE_FRAME
;
4137 struct iwl_cmd
*cmd
;
4139 /* If a Tx command is being handled and it isn't in the actual
4140 * command queue then there a command routing bug has been introduced
4141 * in the queue management code. */
4142 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
4143 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4144 txq_id
, pkt
->hdr
.cmd
);
4145 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
4147 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
4148 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
4150 /* Input error checking is done when commands are added to queue. */
4151 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
4152 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
4154 } else if (cmd
->meta
.u
.callback
&&
4155 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
4158 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
4160 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
4161 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4162 wake_up_interruptible(&priv
->wait_command_queue
);
4166 /************************** RX-FUNCTIONS ****************************/
4168 * Rx theory of operation
4170 * The host allocates 32 DMA target addresses and passes the host address
4171 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4175 * The host/firmware share two index registers for managing the Rx buffers.
4177 * The READ index maps to the first position that the firmware may be writing
4178 * to -- the driver can read up to (but not including) this position and get
4180 * The READ index is managed by the firmware once the card is enabled.
4182 * The WRITE index maps to the last position the driver has read from -- the
4183 * position preceding WRITE is the last slot the firmware can place a packet.
4185 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4188 * During initialization the host sets up the READ queue position to the first
4189 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4191 * When the firmware places a packet in a buffer it will advance the READ index
4192 * and fire the RX interrupt. The driver can then query the READ index and
4193 * process as many packets as possible, moving the WRITE index forward as it
4194 * resets the Rx queue buffers with new memory.
4196 * The management in the driver is as follows:
4197 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4198 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4199 * to replensish the iwl->rxq->rx_free.
4200 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4201 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4202 * 'processed' and 'read' driver indexes as well)
4203 * + A received packet is processed and handed to the kernel network stack,
4204 * detached from the iwl->rxq. The driver 'processed' index is updated.
4205 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4206 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4207 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4208 * were enough free buffers and RX_STALLED is set it is cleared.
4213 * iwl_rx_queue_alloc() Allocates rx_free
4214 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4215 * iwl_rx_queue_restock
4216 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4217 * queue, updates firmware pointers, and updates
4218 * the WRITE index. If insufficient rx_free buffers
4219 * are available, schedules iwl_rx_replenish
4221 * -- enable interrupts --
4222 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4223 * READ INDEX, detaching the SKB from the pool.
4224 * Moves the packet buffer from queue to rx_used.
4225 * Calls iwl_rx_queue_restock to refill any empty
4232 * iwl_rx_queue_space - Return number of free slots available in queue.
4234 static int iwl_rx_queue_space(const struct iwl_rx_queue
*q
)
4236 int s
= q
->read
- q
->write
;
4239 /* keep some buffer to not confuse full and empty queue */
4247 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4249 * NOTE: This function has 3945 and 4965 specific code sections
4250 * but is declared in base due to the majority of the
4251 * implementation being the same (only a numeric constant is
4255 int iwl_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl_rx_queue
*q
)
4259 unsigned long flags
;
4261 spin_lock_irqsave(&q
->lock
, flags
);
4263 if (q
->need_update
== 0)
4266 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4267 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4269 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4270 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4271 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4275 rc
= iwl_grab_restricted_access(priv
);
4279 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_WPTR
,
4281 iwl_release_restricted_access(priv
);
4283 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
4289 spin_unlock_irqrestore(&q
->lock
, flags
);
4294 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4296 * NOTE: This function has 3945 and 4965 specific code paths in it.
4298 static inline __le32
iwl_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
4299 dma_addr_t dma_addr
)
4301 return cpu_to_le32((u32
)(dma_addr
>> 8));
4306 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4308 * If there are slots in the RX queue that need to be restocked,
4309 * and we have free pre-allocated buffers, fill the ranks as much
4310 * as we can pulling from rx_free.
4312 * This moves the 'write' index forward to catch up with 'processed', and
4313 * also updates the memory address in the firmware to reference the new
4316 int iwl_rx_queue_restock(struct iwl_priv
*priv
)
4318 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4319 struct list_head
*element
;
4320 struct iwl_rx_mem_buffer
*rxb
;
4321 unsigned long flags
;
4324 spin_lock_irqsave(&rxq
->lock
, flags
);
4325 write
= rxq
->write
& ~0x7;
4326 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
4327 element
= rxq
->rx_free
.next
;
4328 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4330 rxq
->bd
[rxq
->write
] = iwl_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
4331 rxq
->queue
[rxq
->write
] = rxb
;
4332 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
4335 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4336 /* If the pre-allocated buffer pool is dropping low, schedule to
4338 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
4339 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
4342 /* If we've added more space for the firmware to place data, tell it */
4343 if ((write
!= (rxq
->write
& ~0x7))
4344 || (abs(rxq
->write
- rxq
->read
) > 7)) {
4345 spin_lock_irqsave(&rxq
->lock
, flags
);
4346 rxq
->need_update
= 1;
4347 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4348 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
4357 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4359 * When moving to rx_free an SKB is allocated for the slot.
4361 * Also restock the Rx queue via iwl_rx_queue_restock.
4362 * This is called as a scheduled work item (except for during intialization)
4364 void iwl_rx_replenish(void *data
)
4366 struct iwl_priv
*priv
= data
;
4367 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4368 struct list_head
*element
;
4369 struct iwl_rx_mem_buffer
*rxb
;
4370 unsigned long flags
;
4371 spin_lock_irqsave(&rxq
->lock
, flags
);
4372 while (!list_empty(&rxq
->rx_used
)) {
4373 element
= rxq
->rx_used
.next
;
4374 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4376 alloc_skb(IWL_RX_BUF_SIZE
, __GFP_NOWARN
| GFP_ATOMIC
);
4378 if (net_ratelimit())
4379 printk(KERN_CRIT DRV_NAME
4380 ": Can not allocate SKB buffers\n");
4381 /* We don't reschedule replenish work here -- we will
4382 * call the restock method and if it still needs
4383 * more buffers it will schedule replenish */
4386 priv
->alloc_rxb_skb
++;
4389 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
4390 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4391 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
4394 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4396 spin_lock_irqsave(&priv
->lock
, flags
);
4397 iwl_rx_queue_restock(priv
);
4398 spin_unlock_irqrestore(&priv
->lock
, flags
);
4401 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4402 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4403 * This free routine walks the list of POOL entries and if SKB is set to
4404 * non NULL it is unmapped and freed
4406 void iwl_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4409 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
4410 if (rxq
->pool
[i
].skb
!= NULL
) {
4411 pci_unmap_single(priv
->pci_dev
,
4412 rxq
->pool
[i
].dma_addr
,
4413 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4414 dev_kfree_skb(rxq
->pool
[i
].skb
);
4418 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
4423 int iwl_rx_queue_alloc(struct iwl_priv
*priv
)
4425 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4426 struct pci_dev
*dev
= priv
->pci_dev
;
4429 spin_lock_init(&rxq
->lock
);
4430 INIT_LIST_HEAD(&rxq
->rx_free
);
4431 INIT_LIST_HEAD(&rxq
->rx_used
);
4432 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
4435 /* Fill the rx_used queue with _all_ of the Rx buffers */
4436 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
4437 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4438 /* Set us so that we have processed and used all buffers, but have
4439 * not restocked the Rx queue with fresh buffers */
4440 rxq
->read
= rxq
->write
= 0;
4441 rxq
->free_count
= 0;
4442 rxq
->need_update
= 0;
4446 void iwl_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4448 unsigned long flags
;
4450 spin_lock_irqsave(&rxq
->lock
, flags
);
4451 INIT_LIST_HEAD(&rxq
->rx_free
);
4452 INIT_LIST_HEAD(&rxq
->rx_used
);
4453 /* Fill the rx_used queue with _all_ of the Rx buffers */
4454 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
4455 /* In the reset function, these buffers may have been allocated
4456 * to an SKB, so we need to unmap and free potential storage */
4457 if (rxq
->pool
[i
].skb
!= NULL
) {
4458 pci_unmap_single(priv
->pci_dev
,
4459 rxq
->pool
[i
].dma_addr
,
4460 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4461 priv
->alloc_rxb_skb
--;
4462 dev_kfree_skb(rxq
->pool
[i
].skb
);
4463 rxq
->pool
[i
].skb
= NULL
;
4465 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4468 /* Set us so that we have processed and used all buffers, but have
4469 * not restocked the Rx queue with fresh buffers */
4470 rxq
->read
= rxq
->write
= 0;
4471 rxq
->free_count
= 0;
4472 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4475 /* Convert linear signal-to-noise ratio into dB */
4476 static u8 ratio2dB
[100] = {
4477 /* 0 1 2 3 4 5 6 7 8 9 */
4478 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4479 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4480 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4481 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4482 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4483 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4484 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4485 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4486 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4487 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4490 /* Calculates a relative dB value from a ratio of linear
4491 * (i.e. not dB) signal levels.
4492 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4493 int iwl_calc_db_from_ratio(int sig_ratio
)
4495 /* Anything above 1000:1 just report as 60 dB */
4496 if (sig_ratio
> 1000)
4499 /* Above 100:1, divide by 10 and use table,
4500 * add 20 dB to make up for divide by 10 */
4501 if (sig_ratio
> 100)
4502 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4504 /* We shouldn't see this */
4508 /* Use table for ratios 1:1 - 99:1 */
4509 return (int)ratio2dB
[sig_ratio
];
4512 #define PERFECT_RSSI (-20) /* dBm */
4513 #define WORST_RSSI (-95) /* dBm */
4514 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4516 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4517 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4518 * about formulas used below. */
4519 int iwl_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4522 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4524 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4525 * as indicator; formula is (signal dbm - noise dbm).
4526 * SNR at or above 40 is a great signal (100%).
4527 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4528 * Weakest usable signal is usually 10 - 15 dB SNR. */
4530 if (rssi_dbm
- noise_dbm
>= 40)
4532 else if (rssi_dbm
< noise_dbm
)
4534 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4536 /* Else use just the signal level.
4537 * This formula is a least squares fit of data points collected and
4538 * compared with a reference system that had a percentage (%) display
4539 * for signal quality. */
4541 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4542 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4543 (RSSI_RANGE
* RSSI_RANGE
);
4547 else if (sig_qual
< 1)
4554 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4556 * Uses the priv->rx_handlers callback function array to invoke
4557 * the appropriate handlers, including command responses,
4558 * frame-received notifications, and other notifications.
4560 static void iwl_rx_handle(struct iwl_priv
*priv
)
4562 struct iwl_rx_mem_buffer
*rxb
;
4563 struct iwl_rx_packet
*pkt
;
4564 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4567 unsigned long flags
;
4569 r
= iwl_hw_get_rx_read(priv
);
4572 /* Rx interrupt, but nothing sent from uCode */
4574 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4577 rxb
= rxq
->queue
[i
];
4579 /* If an RXB doesn't have a queue slot associated with it
4580 * then a bug has been introduced in the queue refilling
4581 * routines -- catch it here */
4582 BUG_ON(rxb
== NULL
);
4584 rxq
->queue
[i
] = NULL
;
4586 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4588 PCI_DMA_FROMDEVICE
);
4589 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4591 /* Reclaim a command buffer only if this packet is a response
4592 * to a (driver-originated) command.
4593 * If the packet (e.g. Rx frame) originated from uCode,
4594 * there is no command buffer to reclaim.
4595 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4596 * but apparently a few don't get set; catch them here. */
4597 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4598 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
4599 (pkt
->hdr
.cmd
!= REPLY_4965_RX
) &&
4600 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
4601 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4602 (pkt
->hdr
.cmd
!= REPLY_TX
);
4604 /* Based on type of command response or notification,
4605 * handle those that need handling via function in
4606 * rx_handlers table. See iwl_setup_rx_handlers() */
4607 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4608 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4609 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4610 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4611 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4613 /* No handling needed */
4614 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4615 "r %d i %d No handler needed for %s, 0x%02x\n",
4616 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4621 /* Invoke any callbacks, transfer the skb to caller,
4622 * and fire off the (possibly) blocking iwl_send_cmd()
4623 * as we reclaim the driver command queue */
4624 if (rxb
&& rxb
->skb
)
4625 iwl_tx_cmd_complete(priv
, rxb
);
4627 IWL_WARNING("Claim null rxb?\n");
4630 /* For now we just don't re-use anything. We can tweak this
4631 * later to try and re-use notification packets and SKBs that
4632 * fail to Rx correctly */
4633 if (rxb
->skb
!= NULL
) {
4634 priv
->alloc_rxb_skb
--;
4635 dev_kfree_skb_any(rxb
->skb
);
4639 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4640 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4641 spin_lock_irqsave(&rxq
->lock
, flags
);
4642 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4643 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4644 i
= (i
+ 1) & RX_QUEUE_MASK
;
4647 /* Backtrack one entry */
4649 iwl_rx_queue_restock(priv
);
4652 int iwl_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4653 struct iwl_tx_queue
*txq
)
4657 int txq_id
= txq
->q
.id
;
4659 if (txq
->need_update
== 0)
4662 /* if we're trying to save power */
4663 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4664 /* wake up nic if it's powered down ...
4665 * uCode will wake up, and interrupt us again, so next
4666 * time we'll skip this part. */
4667 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4669 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4670 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4671 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4672 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4676 /* restore this queue's parameters in nic hardware. */
4677 rc
= iwl_grab_restricted_access(priv
);
4680 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
4681 txq
->q
.first_empty
| (txq_id
<< 8));
4682 iwl_release_restricted_access(priv
);
4684 /* else not in power-save mode, uCode will never sleep when we're
4685 * trying to tx (during RFKILL, we're not trying to tx). */
4687 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4688 txq
->q
.first_empty
| (txq_id
<< 8));
4690 txq
->need_update
= 0;
4695 #ifdef CONFIG_IWLWIFI_DEBUG
4696 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd
*rxon
)
4698 DECLARE_MAC_BUF(mac
);
4700 IWL_DEBUG_RADIO("RX CONFIG:\n");
4701 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4702 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4703 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4704 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4705 le32_to_cpu(rxon
->filter_flags
));
4706 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4707 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4708 rxon
->ofdm_basic_rates
);
4709 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4710 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4711 print_mac(mac
, rxon
->node_addr
));
4712 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4713 print_mac(mac
, rxon
->bssid_addr
));
4714 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4718 static void iwl_enable_interrupts(struct iwl_priv
*priv
)
4720 IWL_DEBUG_ISR("Enabling interrupts\n");
4721 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4722 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4725 static inline void iwl_disable_interrupts(struct iwl_priv
*priv
)
4727 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4729 /* disable interrupts from uCode/NIC to host */
4730 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4732 /* acknowledge/clear/reset any interrupts still pending
4733 * from uCode or flow handler (Rx/Tx DMA) */
4734 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4735 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4736 IWL_DEBUG_ISR("Disabled interrupts\n");
4739 static const char *desc_lookup(int i
)
4747 return "BAD_CHECKSUM";
4749 return "NMI_INTERRUPT";
4753 return "FATAL_ERROR";
4759 #define ERROR_START_OFFSET (1 * sizeof(u32))
4760 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4762 static void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
4765 u32 desc
, time
, count
, base
, data1
;
4766 u32 blink1
, blink2
, ilink1
, ilink2
;
4769 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4771 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4772 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4776 rc
= iwl_grab_restricted_access(priv
);
4778 IWL_WARNING("Can not read from adapter at this time.\n");
4782 count
= iwl_read_restricted_mem(priv
, base
);
4784 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4785 IWL_ERROR("Start IWL Error Log Dump:\n");
4786 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4787 priv
->status
, priv
->config
, count
);
4790 desc
= iwl_read_restricted_mem(priv
, base
+ 1 * sizeof(u32
));
4791 blink1
= iwl_read_restricted_mem(priv
, base
+ 3 * sizeof(u32
));
4792 blink2
= iwl_read_restricted_mem(priv
, base
+ 4 * sizeof(u32
));
4793 ilink1
= iwl_read_restricted_mem(priv
, base
+ 5 * sizeof(u32
));
4794 ilink2
= iwl_read_restricted_mem(priv
, base
+ 6 * sizeof(u32
));
4795 data1
= iwl_read_restricted_mem(priv
, base
+ 7 * sizeof(u32
));
4796 data2
= iwl_read_restricted_mem(priv
, base
+ 8 * sizeof(u32
));
4797 line
= iwl_read_restricted_mem(priv
, base
+ 9 * sizeof(u32
));
4798 time
= iwl_read_restricted_mem(priv
, base
+ 11 * sizeof(u32
));
4800 IWL_ERROR("Desc Time "
4801 "data1 data2 line\n");
4802 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4803 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
4804 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4805 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
4808 iwl_release_restricted_access(priv
);
4811 #define EVENT_START_OFFSET (4 * sizeof(u32))
4814 * iwl_print_event_log - Dump error event log to syslog
4816 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4818 static void iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4819 u32 num_events
, u32 mode
)
4822 u32 base
; /* SRAM byte address of event log header */
4823 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4824 u32 ptr
; /* SRAM byte address of log data */
4825 u32 ev
, time
, data
; /* event log data */
4827 if (num_events
== 0)
4830 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4833 event_size
= 2 * sizeof(u32
);
4835 event_size
= 3 * sizeof(u32
);
4837 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4839 /* "time" is actually "data" for mode 0 (no timestamp).
4840 * place event id # at far right for easier visual parsing. */
4841 for (i
= 0; i
< num_events
; i
++) {
4842 ev
= iwl_read_restricted_mem(priv
, ptr
);
4844 time
= iwl_read_restricted_mem(priv
, ptr
);
4847 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4849 data
= iwl_read_restricted_mem(priv
, ptr
);
4851 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4856 static void iwl_dump_nic_event_log(struct iwl_priv
*priv
)
4859 u32 base
; /* SRAM byte address of event log header */
4860 u32 capacity
; /* event log capacity in # entries */
4861 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4862 u32 num_wraps
; /* # times uCode wrapped to top of log */
4863 u32 next_entry
; /* index of next entry to be written by uCode */
4864 u32 size
; /* # entries that we'll print */
4866 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4867 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4868 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4872 rc
= iwl_grab_restricted_access(priv
);
4874 IWL_WARNING("Can not read from adapter at this time.\n");
4878 /* event log header */
4879 capacity
= iwl_read_restricted_mem(priv
, base
);
4880 mode
= iwl_read_restricted_mem(priv
, base
+ (1 * sizeof(u32
)));
4881 num_wraps
= iwl_read_restricted_mem(priv
, base
+ (2 * sizeof(u32
)));
4882 next_entry
= iwl_read_restricted_mem(priv
, base
+ (3 * sizeof(u32
)));
4884 size
= num_wraps
? capacity
: next_entry
;
4886 /* bail out if nothing in log */
4888 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4889 iwl_release_restricted_access(priv
);
4893 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4896 /* if uCode has wrapped back to top of log, start at the oldest entry,
4897 * i.e the next one that uCode would fill. */
4899 iwl_print_event_log(priv
, next_entry
,
4900 capacity
- next_entry
, mode
);
4902 /* (then/else) start at top of log */
4903 iwl_print_event_log(priv
, 0, next_entry
, mode
);
4905 iwl_release_restricted_access(priv
);
4909 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4911 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
4913 /* Set the FW error flag -- cleared on iwl_down */
4914 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4916 /* Cancel currently queued command. */
4917 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4919 #ifdef CONFIG_IWLWIFI_DEBUG
4920 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4921 iwl_dump_nic_error_log(priv
);
4922 iwl_dump_nic_event_log(priv
);
4923 iwl_print_rx_config_cmd(&priv
->staging_rxon
);
4927 wake_up_interruptible(&priv
->wait_command_queue
);
4929 /* Keep the restart process from trying to send host
4930 * commands by clearing the INIT status bit */
4931 clear_bit(STATUS_READY
, &priv
->status
);
4933 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4934 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4935 "Restarting adapter due to uCode error.\n");
4937 if (iwl_is_associated(priv
)) {
4938 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4939 sizeof(priv
->recovery_rxon
));
4940 priv
->error_recovering
= 1;
4942 queue_work(priv
->workqueue
, &priv
->restart
);
4946 static void iwl_error_recovery(struct iwl_priv
*priv
)
4948 unsigned long flags
;
4950 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4951 sizeof(priv
->staging_rxon
));
4952 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4953 iwl_commit_rxon(priv
);
4955 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
4957 spin_lock_irqsave(&priv
->lock
, flags
);
4958 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4959 priv
->error_recovering
= 0;
4960 spin_unlock_irqrestore(&priv
->lock
, flags
);
4963 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
4965 u32 inta
, handled
= 0;
4967 unsigned long flags
;
4968 #ifdef CONFIG_IWLWIFI_DEBUG
4972 spin_lock_irqsave(&priv
->lock
, flags
);
4974 /* Ack/clear/reset pending uCode interrupts.
4975 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4976 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4977 inta
= iwl_read32(priv
, CSR_INT
);
4978 iwl_write32(priv
, CSR_INT
, inta
);
4980 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4981 * Any new interrupts that happen after this, either while we're
4982 * in this tasklet, or later, will show up in next ISR/tasklet. */
4983 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4984 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4986 #ifdef CONFIG_IWLWIFI_DEBUG
4987 if (iwl_debug_level
& IWL_DL_ISR
) {
4988 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4989 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4990 inta
, inta_mask
, inta_fh
);
4994 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4995 * atomic, make sure that inta covers all the interrupts that
4996 * we've discovered, even if FH interrupt came in just after
4997 * reading CSR_INT. */
4998 if (inta_fh
& CSR_FH_INT_RX_MASK
)
4999 inta
|= CSR_INT_BIT_FH_RX
;
5000 if (inta_fh
& CSR_FH_INT_TX_MASK
)
5001 inta
|= CSR_INT_BIT_FH_TX
;
5003 /* Now service all interrupt bits discovered above. */
5004 if (inta
& CSR_INT_BIT_HW_ERR
) {
5005 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5007 /* Tell the device to stop sending interrupts */
5008 iwl_disable_interrupts(priv
);
5010 iwl_irq_handle_error(priv
);
5012 handled
|= CSR_INT_BIT_HW_ERR
;
5014 spin_unlock_irqrestore(&priv
->lock
, flags
);
5019 #ifdef CONFIG_IWLWIFI_DEBUG
5020 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5021 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5022 if (inta
& CSR_INT_BIT_MAC_CLK_ACTV
)
5023 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5025 /* Alive notification via Rx interrupt will do the real work */
5026 if (inta
& CSR_INT_BIT_ALIVE
)
5027 IWL_DEBUG_ISR("Alive interrupt\n");
5030 /* Safely ignore these bits for debug checks below */
5031 inta
&= ~(CSR_INT_BIT_MAC_CLK_ACTV
| CSR_INT_BIT_ALIVE
);
5033 /* HW RF KILL switch toggled (4965 only) */
5034 if (inta
& CSR_INT_BIT_RF_KILL
) {
5036 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
5037 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
5040 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
5041 "RF_KILL bit toggled to %s.\n",
5042 hw_rf_kill
? "disable radio":"enable radio");
5044 /* Queue restart only if RF_KILL switch was set to "kill"
5045 * when we loaded driver, and is now set to "enable".
5046 * After we're Alive, RF_KILL gets handled by
5047 * iwl_rx_card_state_notif() */
5048 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
))
5049 queue_work(priv
->workqueue
, &priv
->restart
);
5051 handled
|= CSR_INT_BIT_RF_KILL
;
5054 /* Chip got too hot and stopped itself (4965 only) */
5055 if (inta
& CSR_INT_BIT_CT_KILL
) {
5056 IWL_ERROR("Microcode CT kill error detected.\n");
5057 handled
|= CSR_INT_BIT_CT_KILL
;
5060 /* Error detected by uCode */
5061 if (inta
& CSR_INT_BIT_SW_ERR
) {
5062 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5064 iwl_irq_handle_error(priv
);
5065 handled
|= CSR_INT_BIT_SW_ERR
;
5068 /* uCode wakes up after power-down sleep */
5069 if (inta
& CSR_INT_BIT_WAKEUP
) {
5070 IWL_DEBUG_ISR("Wakeup interrupt\n");
5071 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
5072 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
5073 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
5074 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
5075 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
5076 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
5077 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
5079 handled
|= CSR_INT_BIT_WAKEUP
;
5082 /* All uCode command responses, including Tx command responses,
5083 * Rx "responses" (frame-received notification), and other
5084 * notifications from uCode come through here*/
5085 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
5086 iwl_rx_handle(priv
);
5087 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
5090 if (inta
& CSR_INT_BIT_FH_TX
) {
5091 IWL_DEBUG_ISR("Tx interrupt\n");
5092 handled
|= CSR_INT_BIT_FH_TX
;
5095 if (inta
& ~handled
)
5096 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
5098 if (inta
& ~CSR_INI_SET_MASK
) {
5099 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5100 inta
& ~CSR_INI_SET_MASK
);
5101 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
5104 /* Re-enable all interrupts */
5105 iwl_enable_interrupts(priv
);
5107 #ifdef CONFIG_IWLWIFI_DEBUG
5108 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5109 inta
= iwl_read32(priv
, CSR_INT
);
5110 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
5111 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5112 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5113 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
5116 spin_unlock_irqrestore(&priv
->lock
, flags
);
5119 static irqreturn_t
iwl_isr(int irq
, void *data
)
5121 struct iwl_priv
*priv
= data
;
5122 u32 inta
, inta_mask
;
5127 spin_lock(&priv
->lock
);
5129 /* Disable (but don't clear!) interrupts here to avoid
5130 * back-to-back ISRs and sporadic interrupts from our NIC.
5131 * If we have something to service, the tasklet will re-enable ints.
5132 * If we *don't* have something, we'll re-enable before leaving here. */
5133 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
5134 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
5136 /* Discover which interrupts are active/pending */
5137 inta
= iwl_read32(priv
, CSR_INT
);
5138 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5140 /* Ignore interrupt if there's nothing in NIC to service.
5141 * This may be due to IRQ shared with another device,
5142 * or due to sporadic interrupts thrown from our NIC. */
5143 if (!inta
&& !inta_fh
) {
5144 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5148 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
5149 /* Hardware disappeared */
5150 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
5154 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5155 inta
, inta_mask
, inta_fh
);
5157 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5158 tasklet_schedule(&priv
->irq_tasklet
);
5159 spin_unlock(&priv
->lock
);
5164 /* re-enable interrupts here since we don't have anything to service. */
5165 iwl_enable_interrupts(priv
);
5166 spin_unlock(&priv
->lock
);
5170 /************************** EEPROM BANDS ****************************
5172 * The iwl_eeprom_band definitions below provide the mapping from the
5173 * EEPROM contents to the specific channel number supported for each
5176 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5177 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5178 * The specific geography and calibration information for that channel
5179 * is contained in the eeprom map itself.
5181 * During init, we copy the eeprom information and channel map
5182 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5184 * channel_map_24/52 provides the index in the channel_info array for a
5185 * given channel. We have to have two separate maps as there is channel
5186 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5189 * A value of 0xff stored in the channel_map indicates that the channel
5190 * is not supported by the hardware at all.
5192 * A value of 0xfe in the channel_map indicates that the channel is not
5193 * valid for Tx with the current hardware. This means that
5194 * while the system can tune and receive on a given channel, it may not
5195 * be able to associate or transmit any frames on that
5196 * channel. There is no corresponding channel information for that
5199 *********************************************************************/
5202 static const u8 iwl_eeprom_band_1
[14] = {
5203 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5207 static const u8 iwl_eeprom_band_2
[] = {
5208 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5211 static const u8 iwl_eeprom_band_3
[] = { /* 5205-5320MHz */
5212 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5215 static const u8 iwl_eeprom_band_4
[] = { /* 5500-5700MHz */
5216 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5219 static const u8 iwl_eeprom_band_5
[] = { /* 5725-5825MHz */
5220 145, 149, 153, 157, 161, 165
5223 static u8 iwl_eeprom_band_6
[] = { /* 2.4 FAT channel */
5227 static u8 iwl_eeprom_band_7
[] = { /* 5.2 FAT channel */
5228 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5231 static void iwl_init_band_reference(const struct iwl_priv
*priv
, int band
,
5232 int *eeprom_ch_count
,
5233 const struct iwl_eeprom_channel
5235 const u8
**eeprom_ch_index
)
5238 case 1: /* 2.4GHz band */
5239 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_1
);
5240 *eeprom_ch_info
= priv
->eeprom
.band_1_channels
;
5241 *eeprom_ch_index
= iwl_eeprom_band_1
;
5243 case 2: /* 5.2GHz band */
5244 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_2
);
5245 *eeprom_ch_info
= priv
->eeprom
.band_2_channels
;
5246 *eeprom_ch_index
= iwl_eeprom_band_2
;
5248 case 3: /* 5.2GHz band */
5249 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_3
);
5250 *eeprom_ch_info
= priv
->eeprom
.band_3_channels
;
5251 *eeprom_ch_index
= iwl_eeprom_band_3
;
5253 case 4: /* 5.2GHz band */
5254 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_4
);
5255 *eeprom_ch_info
= priv
->eeprom
.band_4_channels
;
5256 *eeprom_ch_index
= iwl_eeprom_band_4
;
5258 case 5: /* 5.2GHz band */
5259 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_5
);
5260 *eeprom_ch_info
= priv
->eeprom
.band_5_channels
;
5261 *eeprom_ch_index
= iwl_eeprom_band_5
;
5264 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_6
);
5265 *eeprom_ch_info
= priv
->eeprom
.band_24_channels
;
5266 *eeprom_ch_index
= iwl_eeprom_band_6
;
5269 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_7
);
5270 *eeprom_ch_info
= priv
->eeprom
.band_52_channels
;
5271 *eeprom_ch_index
= iwl_eeprom_band_7
;
5279 const struct iwl_channel_info
*iwl_get_channel_info(const struct iwl_priv
*priv
,
5280 int phymode
, u16 channel
)
5285 case MODE_IEEE80211A
:
5286 for (i
= 14; i
< priv
->channel_count
; i
++) {
5287 if (priv
->channel_info
[i
].channel
== channel
)
5288 return &priv
->channel_info
[i
];
5292 case MODE_IEEE80211B
:
5293 case MODE_IEEE80211G
:
5294 if (channel
>= 1 && channel
<= 14)
5295 return &priv
->channel_info
[channel
- 1];
5303 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5306 static int iwl_init_channel_map(struct iwl_priv
*priv
)
5308 int eeprom_ch_count
= 0;
5309 const u8
*eeprom_ch_index
= NULL
;
5310 const struct iwl_eeprom_channel
*eeprom_ch_info
= NULL
;
5312 struct iwl_channel_info
*ch_info
;
5314 if (priv
->channel_count
) {
5315 IWL_DEBUG_INFO("Channel map already initialized.\n");
5319 if (priv
->eeprom
.version
< 0x2f) {
5320 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5321 priv
->eeprom
.version
);
5325 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5327 priv
->channel_count
=
5328 ARRAY_SIZE(iwl_eeprom_band_1
) +
5329 ARRAY_SIZE(iwl_eeprom_band_2
) +
5330 ARRAY_SIZE(iwl_eeprom_band_3
) +
5331 ARRAY_SIZE(iwl_eeprom_band_4
) +
5332 ARRAY_SIZE(iwl_eeprom_band_5
);
5334 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv
->channel_count
);
5336 priv
->channel_info
= kzalloc(sizeof(struct iwl_channel_info
) *
5337 priv
->channel_count
, GFP_KERNEL
);
5338 if (!priv
->channel_info
) {
5339 IWL_ERROR("Could not allocate channel_info\n");
5340 priv
->channel_count
= 0;
5344 ch_info
= priv
->channel_info
;
5346 /* Loop through the 5 EEPROM bands adding them in order to the
5347 * channel map we maintain (that contains additional information than
5348 * what just in the EEPROM) */
5349 for (band
= 1; band
<= 5; band
++) {
5351 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5352 &eeprom_ch_info
, &eeprom_ch_index
);
5354 /* Loop through each band adding each of the channels */
5355 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5356 ch_info
->channel
= eeprom_ch_index
[ch
];
5357 ch_info
->phymode
= (band
== 1) ? MODE_IEEE80211B
:
5360 /* permanently store EEPROM's channel regulatory flags
5361 * and max power in channel info database. */
5362 ch_info
->eeprom
= eeprom_ch_info
[ch
];
5364 /* Copy the run-time flags so they are there even on
5365 * invalid channels */
5366 ch_info
->flags
= eeprom_ch_info
[ch
].flags
;
5368 if (!(is_channel_valid(ch_info
))) {
5369 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5373 is_channel_a_band(ch_info
) ?
5379 /* Initialize regulatory-based run-time data */
5380 ch_info
->max_power_avg
= ch_info
->curr_txpow
=
5381 eeprom_ch_info
[ch
].max_power_avg
;
5382 ch_info
->scan_power
= eeprom_ch_info
[ch
].max_power_avg
;
5383 ch_info
->min_power
= 0;
5385 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5386 " %ddBm): Ad-Hoc %ssupported\n",
5388 is_channel_a_band(ch_info
) ?
5390 CHECK_AND_PRINT(IBSS
),
5391 CHECK_AND_PRINT(ACTIVE
),
5392 CHECK_AND_PRINT(RADAR
),
5393 CHECK_AND_PRINT(WIDE
),
5394 CHECK_AND_PRINT(NARROW
),
5395 CHECK_AND_PRINT(DFS
),
5396 eeprom_ch_info
[ch
].flags
,
5397 eeprom_ch_info
[ch
].max_power_avg
,
5398 ((eeprom_ch_info
[ch
].
5399 flags
& EEPROM_CHANNEL_IBSS
)
5400 && !(eeprom_ch_info
[ch
].
5401 flags
& EEPROM_CHANNEL_RADAR
))
5404 /* Set the user_txpower_limit to the highest power
5405 * supported by any channel */
5406 if (eeprom_ch_info
[ch
].max_power_avg
>
5407 priv
->user_txpower_limit
)
5408 priv
->user_txpower_limit
=
5409 eeprom_ch_info
[ch
].max_power_avg
;
5415 for (band
= 6; band
<= 7; band
++) {
5417 u8 fat_extension_chan
;
5419 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5420 &eeprom_ch_info
, &eeprom_ch_index
);
5422 phymode
= (band
== 6) ? MODE_IEEE80211B
: MODE_IEEE80211A
;
5423 /* Loop through each band adding each of the channels */
5424 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5427 ((eeprom_ch_index
[ch
] == 5) ||
5428 (eeprom_ch_index
[ch
] == 6) ||
5429 (eeprom_ch_index
[ch
] == 7)))
5430 fat_extension_chan
= HT_IE_EXT_CHANNEL_MAX
;
5432 fat_extension_chan
= HT_IE_EXT_CHANNEL_ABOVE
;
5434 iwl4965_set_fat_chan_info(priv
, phymode
,
5435 eeprom_ch_index
[ch
],
5436 &(eeprom_ch_info
[ch
]),
5437 fat_extension_chan
);
5439 iwl4965_set_fat_chan_info(priv
, phymode
,
5440 (eeprom_ch_index
[ch
] + 4),
5441 &(eeprom_ch_info
[ch
]),
5442 HT_IE_EXT_CHANNEL_BELOW
);
5449 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5450 * sending probe req. This should be set long enough to hear probe responses
5451 * from more than one AP. */
5452 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5453 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5455 /* For faster active scanning, scan will move to the next channel if fewer than
5456 * PLCP_QUIET_THRESH packets are heard on this channel within
5457 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5458 * time if it's a quiet channel (nothing responded to our probe, and there's
5459 * no other traffic).
5460 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5461 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5462 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5464 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5465 * Must be set longer than active dwell time.
5466 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5467 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5468 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5469 #define IWL_PASSIVE_DWELL_BASE (100)
5470 #define IWL_CHANNEL_TUNE_TIME 5
5472 static inline u16
iwl_get_active_dwell_time(struct iwl_priv
*priv
, int phymode
)
5474 if (phymode
== MODE_IEEE80211A
)
5475 return IWL_ACTIVE_DWELL_TIME_52
;
5477 return IWL_ACTIVE_DWELL_TIME_24
;
5480 static u16
iwl_get_passive_dwell_time(struct iwl_priv
*priv
, int phymode
)
5482 u16 active
= iwl_get_active_dwell_time(priv
, phymode
);
5483 u16 passive
= (phymode
!= MODE_IEEE80211A
) ?
5484 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
5485 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
5487 if (iwl_is_associated(priv
)) {
5488 /* If we're associated, we clamp the maximum passive
5489 * dwell time to be 98% of the beacon interval (minus
5490 * 2 * channel tune time) */
5491 passive
= priv
->beacon_int
;
5492 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
5493 passive
= IWL_PASSIVE_DWELL_BASE
;
5494 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
5497 if (passive
<= active
)
5498 passive
= active
+ 1;
5503 static int iwl_get_channels_for_scan(struct iwl_priv
*priv
, int phymode
,
5504 u8 is_active
, u8 direct_mask
,
5505 struct iwl_scan_channel
*scan_ch
)
5507 const struct ieee80211_channel
*channels
= NULL
;
5508 const struct ieee80211_hw_mode
*hw_mode
;
5509 const struct iwl_channel_info
*ch_info
;
5510 u16 passive_dwell
= 0;
5511 u16 active_dwell
= 0;
5514 hw_mode
= iwl_get_hw_mode(priv
, phymode
);
5518 channels
= hw_mode
->channels
;
5520 active_dwell
= iwl_get_active_dwell_time(priv
, phymode
);
5521 passive_dwell
= iwl_get_passive_dwell_time(priv
, phymode
);
5523 for (i
= 0, added
= 0; i
< hw_mode
->num_channels
; i
++) {
5524 if (channels
[i
].chan
==
5525 le16_to_cpu(priv
->active_rxon
.channel
)) {
5526 if (iwl_is_associated(priv
)) {
5528 ("Skipping current channel %d\n",
5529 le16_to_cpu(priv
->active_rxon
.channel
));
5532 } else if (priv
->only_active_channel
)
5535 scan_ch
->channel
= channels
[i
].chan
;
5537 ch_info
= iwl_get_channel_info(priv
, phymode
, scan_ch
->channel
);
5538 if (!is_channel_valid(ch_info
)) {
5539 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5544 if (!is_active
|| is_channel_passive(ch_info
) ||
5545 !(channels
[i
].flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
))
5546 scan_ch
->type
= 0; /* passive */
5548 scan_ch
->type
= 1; /* active */
5550 if (scan_ch
->type
& 1)
5551 scan_ch
->type
|= (direct_mask
<< 1);
5553 if (is_channel_narrow(ch_info
))
5554 scan_ch
->type
|= (1 << 7);
5556 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
5557 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
5559 /* Set power levels to defaults */
5560 scan_ch
->tpc
.dsp_atten
= 110;
5561 /* scan_pwr_info->tpc.dsp_atten; */
5563 /*scan_pwr_info->tpc.tx_gain; */
5564 if (phymode
== MODE_IEEE80211A
)
5565 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
5567 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
5568 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5570 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5574 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5576 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
5577 (scan_ch
->type
& 1) ?
5578 active_dwell
: passive_dwell
);
5584 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
5588 static void iwl_reset_channel_flag(struct iwl_priv
*priv
)
5591 for (i
= 0; i
< 3; i
++) {
5592 struct ieee80211_hw_mode
*hw_mode
= (void *)&priv
->modes
[i
];
5593 for (j
= 0; j
< hw_mode
->num_channels
; j
++)
5594 hw_mode
->channels
[j
].flag
= hw_mode
->channels
[j
].val
;
5598 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
5599 struct ieee80211_rate
*rates
)
5603 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
5604 rates
[i
].rate
= iwl_rates
[i
].ieee
* 5;
5605 rates
[i
].val
= i
; /* Rate scaling will work on indexes */
5607 rates
[i
].flags
= IEEE80211_RATE_SUPPORTED
;
5608 /* Only OFDM have the bits-per-symbol set */
5609 if ((i
<= IWL_LAST_OFDM_RATE
) && (i
>= IWL_FIRST_OFDM_RATE
))
5610 rates
[i
].flags
|= IEEE80211_RATE_OFDM
;
5613 * If CCK 1M then set rate flag to CCK else CCK_2
5614 * which is CCK | PREAMBLE2
5616 rates
[i
].flags
|= (iwl_rates
[i
].plcp
== 10) ?
5617 IEEE80211_RATE_CCK
: IEEE80211_RATE_CCK_2
;
5620 /* Set up which ones are basic rates... */
5621 if (IWL_BASIC_RATES_MASK
& (1 << i
))
5622 rates
[i
].flags
|= IEEE80211_RATE_BASIC
;
5625 iwl4965_init_hw_rates(priv
, rates
);
5629 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5631 static int iwl_init_geos(struct iwl_priv
*priv
)
5633 struct iwl_channel_info
*ch
;
5634 struct ieee80211_hw_mode
*modes
;
5635 struct ieee80211_channel
*channels
;
5636 struct ieee80211_channel
*geo_ch
;
5637 struct ieee80211_rate
*rates
;
5649 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5650 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5654 modes
= kzalloc(sizeof(struct ieee80211_hw_mode
) * mode_count
,
5659 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
5660 priv
->channel_count
, GFP_KERNEL
);
5666 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_MAX_RATES
+ 1)),
5679 /* 5.2GHz channels start after the 2.4GHz channels */
5680 modes
[A
].mode
= MODE_IEEE80211A
;
5681 modes
[A
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5682 modes
[A
].rates
= rates
;
5683 modes
[A
].num_rates
= 8; /* just OFDM */
5684 modes
[A
].rates
= &rates
[4];
5685 modes
[A
].num_channels
= 0;
5687 modes
[B
].mode
= MODE_IEEE80211B
;
5688 modes
[B
].channels
= channels
;
5689 modes
[B
].rates
= rates
;
5690 modes
[B
].num_rates
= 4; /* just CCK */
5691 modes
[B
].num_channels
= 0;
5693 modes
[G
].mode
= MODE_IEEE80211G
;
5694 modes
[G
].channels
= channels
;
5695 modes
[G
].rates
= rates
;
5696 modes
[G
].num_rates
= 12; /* OFDM & CCK */
5697 modes
[G
].num_channels
= 0;
5699 modes
[G_11N
].mode
= MODE_IEEE80211G
;
5700 modes
[G_11N
].channels
= channels
;
5701 modes
[G_11N
].num_rates
= 13; /* OFDM & CCK */
5702 modes
[G_11N
].rates
= rates
;
5703 modes
[G_11N
].num_channels
= 0;
5705 modes
[A_11N
].mode
= MODE_IEEE80211A
;
5706 modes
[A_11N
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5707 modes
[A_11N
].rates
= &rates
[4];
5708 modes
[A_11N
].num_rates
= 9; /* just OFDM */
5709 modes
[A_11N
].num_channels
= 0;
5711 priv
->ieee_channels
= channels
;
5712 priv
->ieee_rates
= rates
;
5714 iwl_init_hw_rates(priv
, rates
);
5716 for (i
= 0, geo_ch
= channels
; i
< priv
->channel_count
; i
++) {
5717 ch
= &priv
->channel_info
[i
];
5719 if (!is_channel_valid(ch
)) {
5720 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5722 ch
->channel
, is_channel_a_band(ch
) ?
5727 if (is_channel_a_band(ch
)) {
5728 geo_ch
= &modes
[A
].channels
[modes
[A
].num_channels
++];
5729 modes
[A_11N
].num_channels
++;
5731 geo_ch
= &modes
[B
].channels
[modes
[B
].num_channels
++];
5732 modes
[G
].num_channels
++;
5733 modes
[G_11N
].num_channels
++;
5736 geo_ch
->freq
= ieee80211chan2mhz(ch
->channel
);
5737 geo_ch
->chan
= ch
->channel
;
5738 geo_ch
->power_level
= ch
->max_power_avg
;
5739 geo_ch
->antenna_max
= 0xff;
5741 if (is_channel_valid(ch
)) {
5742 geo_ch
->flag
= IEEE80211_CHAN_W_SCAN
;
5743 if (ch
->flags
& EEPROM_CHANNEL_IBSS
)
5744 geo_ch
->flag
|= IEEE80211_CHAN_W_IBSS
;
5746 if (ch
->flags
& EEPROM_CHANNEL_ACTIVE
)
5747 geo_ch
->flag
|= IEEE80211_CHAN_W_ACTIVE_SCAN
;
5749 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
5750 geo_ch
->flag
|= IEEE80211_CHAN_W_RADAR_DETECT
;
5752 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
5753 priv
->max_channel_txpower_limit
=
5757 geo_ch
->val
= geo_ch
->flag
;
5760 if ((modes
[A
].num_channels
== 0) && priv
->is_abg
) {
5761 printk(KERN_INFO DRV_NAME
5762 ": Incorrectly detected BG card as ABG. Please send "
5763 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5764 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
5768 printk(KERN_INFO DRV_NAME
5769 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5770 modes
[G
].num_channels
, modes
[A
].num_channels
);
5773 * NOTE: We register these in preference of order -- the
5774 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5775 * a phymode based on rates or AP capabilities but seems to
5776 * configure it purely on if the channel being configured
5777 * is supported by a mode -- and the first match is taken
5780 if (modes
[G
].num_channels
)
5781 ieee80211_register_hwmode(priv
->hw
, &modes
[G
]);
5782 if (modes
[B
].num_channels
)
5783 ieee80211_register_hwmode(priv
->hw
, &modes
[B
]);
5784 if (modes
[A
].num_channels
)
5785 ieee80211_register_hwmode(priv
->hw
, &modes
[A
]);
5787 priv
->modes
= modes
;
5788 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5793 /******************************************************************************
5795 * uCode download functions
5797 ******************************************************************************/
5799 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
5801 if (priv
->ucode_code
.v_addr
!= NULL
) {
5802 pci_free_consistent(priv
->pci_dev
,
5803 priv
->ucode_code
.len
,
5804 priv
->ucode_code
.v_addr
,
5805 priv
->ucode_code
.p_addr
);
5806 priv
->ucode_code
.v_addr
= NULL
;
5808 if (priv
->ucode_data
.v_addr
!= NULL
) {
5809 pci_free_consistent(priv
->pci_dev
,
5810 priv
->ucode_data
.len
,
5811 priv
->ucode_data
.v_addr
,
5812 priv
->ucode_data
.p_addr
);
5813 priv
->ucode_data
.v_addr
= NULL
;
5815 if (priv
->ucode_data_backup
.v_addr
!= NULL
) {
5816 pci_free_consistent(priv
->pci_dev
,
5817 priv
->ucode_data_backup
.len
,
5818 priv
->ucode_data_backup
.v_addr
,
5819 priv
->ucode_data_backup
.p_addr
);
5820 priv
->ucode_data_backup
.v_addr
= NULL
;
5822 if (priv
->ucode_init
.v_addr
!= NULL
) {
5823 pci_free_consistent(priv
->pci_dev
,
5824 priv
->ucode_init
.len
,
5825 priv
->ucode_init
.v_addr
,
5826 priv
->ucode_init
.p_addr
);
5827 priv
->ucode_init
.v_addr
= NULL
;
5829 if (priv
->ucode_init_data
.v_addr
!= NULL
) {
5830 pci_free_consistent(priv
->pci_dev
,
5831 priv
->ucode_init_data
.len
,
5832 priv
->ucode_init_data
.v_addr
,
5833 priv
->ucode_init_data
.p_addr
);
5834 priv
->ucode_init_data
.v_addr
= NULL
;
5836 if (priv
->ucode_boot
.v_addr
!= NULL
) {
5837 pci_free_consistent(priv
->pci_dev
,
5838 priv
->ucode_boot
.len
,
5839 priv
->ucode_boot
.v_addr
,
5840 priv
->ucode_boot
.p_addr
);
5841 priv
->ucode_boot
.v_addr
= NULL
;
5846 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5847 * looking at all data.
5849 static int iwl_verify_inst_full(struct iwl_priv
*priv
, __le32
* image
, u32 len
)
5856 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5858 rc
= iwl_grab_restricted_access(priv
);
5862 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5865 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5866 /* read data comes through single port, auto-incr addr */
5867 /* NOTE: Use the debugless read so we don't flood kernel log
5868 * if IWL_DL_IO is set */
5869 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5870 if (val
!= le32_to_cpu(*image
)) {
5871 IWL_ERROR("uCode INST section is invalid at "
5872 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5873 save_len
- len
, val
, le32_to_cpu(*image
));
5881 iwl_release_restricted_access(priv
);
5885 ("ucode image in INSTRUCTION memory is good\n");
5892 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5893 * using sample data 100 bytes apart. If these sample points are good,
5894 * it's a pretty good bet that everything between them is good, too.
5896 static int iwl_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5903 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5905 rc
= iwl_grab_restricted_access(priv
);
5909 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5910 /* read data comes through single port, auto-incr addr */
5911 /* NOTE: Use the debugless read so we don't flood kernel log
5912 * if IWL_DL_IO is set */
5913 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
,
5914 i
+ RTC_INST_LOWER_BOUND
);
5915 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5916 if (val
!= le32_to_cpu(*image
)) {
5917 #if 0 /* Enable this if you want to see details */
5918 IWL_ERROR("uCode INST section is invalid at "
5919 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5929 iwl_release_restricted_access(priv
);
5936 * iwl_verify_ucode - determine which instruction image is in SRAM,
5937 * and verify its contents
5939 static int iwl_verify_ucode(struct iwl_priv
*priv
)
5946 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5947 len
= priv
->ucode_boot
.len
;
5948 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5950 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5954 /* Try initialize */
5955 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5956 len
= priv
->ucode_init
.len
;
5957 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5959 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5963 /* Try runtime/protocol */
5964 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5965 len
= priv
->ucode_code
.len
;
5966 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5968 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5972 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5974 /* Show first several data entries in instruction SRAM.
5975 * Selection of bootstrap image is arbitrary. */
5976 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5977 len
= priv
->ucode_boot
.len
;
5978 rc
= iwl_verify_inst_full(priv
, image
, len
);
5984 /* check contents of special bootstrap uCode SRAM */
5985 static int iwl_verify_bsm(struct iwl_priv
*priv
)
5987 __le32
*image
= priv
->ucode_boot
.v_addr
;
5988 u32 len
= priv
->ucode_boot
.len
;
5992 IWL_DEBUG_INFO("Begin verify bsm\n");
5994 /* verify BSM SRAM contents */
5995 val
= iwl_read_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
);
5996 for (reg
= BSM_SRAM_LOWER_BOUND
;
5997 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
5998 reg
+= sizeof(u32
), image
++) {
5999 val
= iwl_read_restricted_reg(priv
, reg
);
6000 if (val
!= le32_to_cpu(*image
)) {
6001 IWL_ERROR("BSM uCode verification failed at "
6002 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6003 BSM_SRAM_LOWER_BOUND
,
6004 reg
- BSM_SRAM_LOWER_BOUND
, len
,
6005 val
, le32_to_cpu(*image
));
6010 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6016 * iwl_load_bsm - Load bootstrap instructions
6020 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6021 * in special SRAM that does not power down during RFKILL. When powering back
6022 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6023 * the bootstrap program into the on-board processor, and starts it.
6025 * The bootstrap program loads (via DMA) instructions and data for a new
6026 * program from host DRAM locations indicated by the host driver in the
6027 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6030 * When initializing the NIC, the host driver points the BSM to the
6031 * "initialize" uCode image. This uCode sets up some internal data, then
6032 * notifies host via "initialize alive" that it is complete.
6034 * The host then replaces the BSM_DRAM_* pointer values to point to the
6035 * normal runtime uCode instructions and a backup uCode data cache buffer
6036 * (filled initially with starting data values for the on-board processor),
6037 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6038 * which begins normal operation.
6040 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6041 * the backup data cache in DRAM before SRAM is powered down.
6043 * When powering back up, the BSM loads the bootstrap program. This reloads
6044 * the runtime uCode instructions and the backup data cache into SRAM,
6045 * and re-launches the runtime uCode from where it left off.
6047 static int iwl_load_bsm(struct iwl_priv
*priv
)
6049 __le32
*image
= priv
->ucode_boot
.v_addr
;
6050 u32 len
= priv
->ucode_boot
.len
;
6060 IWL_DEBUG_INFO("Begin load bsm\n");
6062 /* make sure bootstrap program is no larger than BSM's SRAM size */
6063 if (len
> IWL_MAX_BSM_SIZE
)
6066 /* Tell bootstrap uCode where to find the "Initialize" uCode
6067 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6068 * NOTE: iwl_initialize_alive_start() will replace these values,
6069 * after the "initialize" uCode has run, to point to
6070 * runtime/protocol instructions and backup data cache. */
6071 pinst
= priv
->ucode_init
.p_addr
>> 4;
6072 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
6073 inst_len
= priv
->ucode_init
.len
;
6074 data_len
= priv
->ucode_init_data
.len
;
6076 rc
= iwl_grab_restricted_access(priv
);
6080 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6081 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6082 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
6083 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
6085 /* Fill BSM memory with bootstrap instructions */
6086 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
6087 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
6088 reg_offset
+= sizeof(u32
), image
++)
6089 _iwl_write_restricted_reg(priv
, reg_offset
,
6090 le32_to_cpu(*image
));
6092 rc
= iwl_verify_bsm(priv
);
6094 iwl_release_restricted_access(priv
);
6098 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6099 iwl_write_restricted_reg(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
6100 iwl_write_restricted_reg(priv
, BSM_WR_MEM_DST_REG
,
6101 RTC_INST_LOWER_BOUND
);
6102 iwl_write_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
6104 /* Load bootstrap code into instruction SRAM now,
6105 * to prepare to load "initialize" uCode */
6106 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6107 BSM_WR_CTRL_REG_BIT_START
);
6109 /* Wait for load of bootstrap uCode to finish */
6110 for (i
= 0; i
< 100; i
++) {
6111 done
= iwl_read_restricted_reg(priv
, BSM_WR_CTRL_REG
);
6112 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
6117 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
6119 IWL_ERROR("BSM write did not complete!\n");
6123 /* Enable future boot loads whenever power management unit triggers it
6124 * (e.g. when powering back up after power-save shutdown) */
6125 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6126 BSM_WR_CTRL_REG_BIT_START_EN
);
6128 iwl_release_restricted_access(priv
);
6133 static void iwl_nic_start(struct iwl_priv
*priv
)
6135 /* Remove all resets to allow NIC to operate */
6136 iwl_write32(priv
, CSR_RESET
, 0);
6140 * iwl_read_ucode - Read uCode images from disk file.
6142 * Copy into buffers for card to fetch via bus-mastering
6144 static int iwl_read_ucode(struct iwl_priv
*priv
)
6146 struct iwl_ucode
*ucode
;
6148 const struct firmware
*ucode_raw
;
6149 const char *name
= "iwlwifi-4965" IWL4965_UCODE_API
".ucode";
6152 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
6154 /* Ask kernel firmware_class module to get the boot firmware off disk.
6155 * request_firmware() is synchronous, file is in memory on return. */
6156 rc
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
6158 IWL_ERROR("%s firmware file req failed: Reason %d\n", name
, rc
);
6162 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6163 name
, ucode_raw
->size
);
6165 /* Make sure that we got at least our header! */
6166 if (ucode_raw
->size
< sizeof(*ucode
)) {
6167 IWL_ERROR("File size way too small!\n");
6172 /* Data from ucode file: header followed by uCode images */
6173 ucode
= (void *)ucode_raw
->data
;
6175 ver
= le32_to_cpu(ucode
->ver
);
6176 inst_size
= le32_to_cpu(ucode
->inst_size
);
6177 data_size
= le32_to_cpu(ucode
->data_size
);
6178 init_size
= le32_to_cpu(ucode
->init_size
);
6179 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
6180 boot_size
= le32_to_cpu(ucode
->boot_size
);
6182 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
6183 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6185 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6187 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6189 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6191 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6194 /* Verify size of file vs. image size info in file's header */
6195 if (ucode_raw
->size
< sizeof(*ucode
) +
6196 inst_size
+ data_size
+ init_size
+
6197 init_data_size
+ boot_size
) {
6199 IWL_DEBUG_INFO("uCode file size %d too small\n",
6200 (int)ucode_raw
->size
);
6205 /* Verify that uCode images will fit in card's SRAM */
6206 if (inst_size
> IWL_MAX_INST_SIZE
) {
6207 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6213 if (data_size
> IWL_MAX_DATA_SIZE
) {
6214 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6219 if (init_size
> IWL_MAX_INST_SIZE
) {
6221 ("uCode init instr len %d too large to fit in card\n",
6226 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
6228 ("uCode init data len %d too large to fit in card\n",
6229 (int)init_data_size
);
6233 if (boot_size
> IWL_MAX_BSM_SIZE
) {
6235 ("uCode boot instr len %d too large to fit in bsm\n",
6241 /* Allocate ucode buffers for card's bus-master loading ... */
6243 /* Runtime instructions and 2 copies of data:
6244 * 1) unmodified from disk
6245 * 2) backup cache for save/restore during power-downs */
6246 priv
->ucode_code
.len
= inst_size
;
6247 priv
->ucode_code
.v_addr
=
6248 pci_alloc_consistent(priv
->pci_dev
,
6249 priv
->ucode_code
.len
,
6250 &(priv
->ucode_code
.p_addr
));
6252 priv
->ucode_data
.len
= data_size
;
6253 priv
->ucode_data
.v_addr
=
6254 pci_alloc_consistent(priv
->pci_dev
,
6255 priv
->ucode_data
.len
,
6256 &(priv
->ucode_data
.p_addr
));
6258 priv
->ucode_data_backup
.len
= data_size
;
6259 priv
->ucode_data_backup
.v_addr
=
6260 pci_alloc_consistent(priv
->pci_dev
,
6261 priv
->ucode_data_backup
.len
,
6262 &(priv
->ucode_data_backup
.p_addr
));
6265 /* Initialization instructions and data */
6266 priv
->ucode_init
.len
= init_size
;
6267 priv
->ucode_init
.v_addr
=
6268 pci_alloc_consistent(priv
->pci_dev
,
6269 priv
->ucode_init
.len
,
6270 &(priv
->ucode_init
.p_addr
));
6272 priv
->ucode_init_data
.len
= init_data_size
;
6273 priv
->ucode_init_data
.v_addr
=
6274 pci_alloc_consistent(priv
->pci_dev
,
6275 priv
->ucode_init_data
.len
,
6276 &(priv
->ucode_init_data
.p_addr
));
6278 /* Bootstrap (instructions only, no data) */
6279 priv
->ucode_boot
.len
= boot_size
;
6280 priv
->ucode_boot
.v_addr
=
6281 pci_alloc_consistent(priv
->pci_dev
,
6282 priv
->ucode_boot
.len
,
6283 &(priv
->ucode_boot
.p_addr
));
6285 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
6286 !priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
||
6287 !priv
->ucode_boot
.v_addr
|| !priv
->ucode_data_backup
.v_addr
)
6290 /* Copy images into buffers for card's bus-master reads ... */
6292 /* Runtime instructions (first block of data in file) */
6293 src
= &ucode
->data
[0];
6294 len
= priv
->ucode_code
.len
;
6295 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6297 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
6298 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6299 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
6301 /* Runtime data (2nd block)
6302 * NOTE: Copy into backup buffer will be done in iwl_up() */
6303 src
= &ucode
->data
[inst_size
];
6304 len
= priv
->ucode_data
.len
;
6305 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6307 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
6308 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
6310 /* Initialization instructions (3rd block) */
6312 src
= &ucode
->data
[inst_size
+ data_size
];
6313 len
= priv
->ucode_init
.len
;
6314 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6316 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
6319 /* Initialization data (4th block) */
6320 if (init_data_size
) {
6321 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
6322 len
= priv
->ucode_init_data
.len
;
6323 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6325 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
6328 /* Bootstrap instructions (5th block) */
6329 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
6330 len
= priv
->ucode_boot
.len
;
6331 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6333 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
6335 /* We have our copies now, allow OS release its copies */
6336 release_firmware(ucode_raw
);
6340 IWL_ERROR("failed to allocate pci memory\n");
6342 iwl_dealloc_ucode_pci(priv
);
6345 release_firmware(ucode_raw
);
6353 * iwl_set_ucode_ptrs - Set uCode address location
6355 * Tell initialization uCode where to find runtime uCode.
6357 * BSM registers initially contain pointers to initialization uCode.
6358 * We need to replace them to load runtime uCode inst and data,
6359 * and to save runtime data when powering down.
6361 static int iwl_set_ucode_ptrs(struct iwl_priv
*priv
)
6366 unsigned long flags
;
6368 /* bits 35:4 for 4965 */
6369 pinst
= priv
->ucode_code
.p_addr
>> 4;
6370 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
6372 spin_lock_irqsave(&priv
->lock
, flags
);
6373 rc
= iwl_grab_restricted_access(priv
);
6375 spin_unlock_irqrestore(&priv
->lock
, flags
);
6379 /* Tell bootstrap uCode where to find image to load */
6380 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6381 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6382 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
6383 priv
->ucode_data
.len
);
6385 /* Inst bytecount must be last to set up, bit 31 signals uCode
6386 * that all new ptr/size info is in place */
6387 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
6388 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
6390 iwl_release_restricted_access(priv
);
6392 spin_unlock_irqrestore(&priv
->lock
, flags
);
6394 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6400 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6402 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6404 * The 4965 "initialize" ALIVE reply contains calibration data for:
6405 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6406 * (3945 does not contain this data).
6408 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6410 static void iwl_init_alive_start(struct iwl_priv
*priv
)
6412 /* Check alive response for "valid" sign from uCode */
6413 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
6414 /* We had an error bringing up the hardware, so take it
6415 * all the way back down so we can try again */
6416 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6420 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6421 * This is a paranoid check, because we would not have gotten the
6422 * "initialize" alive if code weren't properly loaded. */
6423 if (iwl_verify_ucode(priv
)) {
6424 /* Runtime instruction load was bad;
6425 * take it all the way back down so we can try again */
6426 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6430 /* Calculate temperature */
6431 priv
->temperature
= iwl4965_get_temperature(priv
);
6433 /* Send pointers to protocol/runtime uCode image ... init code will
6434 * load and launch runtime uCode, which will send us another "Alive"
6436 IWL_DEBUG_INFO("Initialization Alive received.\n");
6437 if (iwl_set_ucode_ptrs(priv
)) {
6438 /* Runtime instruction load won't happen;
6439 * take it all the way back down so we can try again */
6440 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6446 queue_work(priv
->workqueue
, &priv
->restart
);
6451 * iwl_alive_start - called after REPLY_ALIVE notification received
6452 * from protocol/runtime uCode (initialization uCode's
6453 * Alive gets handled by iwl_init_alive_start()).
6455 static void iwl_alive_start(struct iwl_priv
*priv
)
6459 IWL_DEBUG_INFO("Runtime Alive received.\n");
6461 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
6462 /* We had an error bringing up the hardware, so take it
6463 * all the way back down so we can try again */
6464 IWL_DEBUG_INFO("Alive failed.\n");
6468 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6469 * This is a paranoid check, because we would not have gotten the
6470 * "runtime" alive if code weren't properly loaded. */
6471 if (iwl_verify_ucode(priv
)) {
6472 /* Runtime instruction load was bad;
6473 * take it all the way back down so we can try again */
6474 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6478 iwl_clear_stations_table(priv
);
6480 rc
= iwl4965_alive_notify(priv
);
6482 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6487 /* After the ALIVE response, we can process host commands */
6488 set_bit(STATUS_ALIVE
, &priv
->status
);
6490 /* Clear out the uCode error bit if it is set */
6491 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
6493 rc
= iwl_init_channel_map(priv
);
6495 IWL_ERROR("initializing regulatory failed: %d\n", rc
);
6499 iwl_init_geos(priv
);
6501 if (iwl_is_rfkill(priv
))
6504 if (!priv
->mac80211_registered
) {
6505 /* Unlock so any user space entry points can call back into
6506 * the driver without a deadlock... */
6507 mutex_unlock(&priv
->mutex
);
6508 iwl_rate_control_register(priv
->hw
);
6509 rc
= ieee80211_register_hw(priv
->hw
);
6510 priv
->hw
->conf
.beacon_int
= 100;
6511 mutex_lock(&priv
->mutex
);
6514 IWL_ERROR("Failed to register network "
6515 "device (error %d)\n", rc
);
6519 priv
->mac80211_registered
= 1;
6521 iwl_reset_channel_flag(priv
);
6523 ieee80211_start_queues(priv
->hw
);
6525 priv
->active_rate
= priv
->rates_mask
;
6526 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
6528 iwl_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
6530 if (iwl_is_associated(priv
)) {
6531 struct iwl_rxon_cmd
*active_rxon
=
6532 (struct iwl_rxon_cmd
*)(&priv
->active_rxon
);
6534 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
6535 sizeof(priv
->staging_rxon
));
6536 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6538 /* Initialize our rx_config data */
6539 iwl_connection_init_rx_config(priv
);
6540 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
6543 /* Configure BT coexistence */
6544 iwl_send_bt_config(priv
);
6546 /* Configure the adapter for unassociated operation */
6547 iwl_commit_rxon(priv
);
6549 /* At this point, the NIC is initialized and operational */
6550 priv
->notif_missed_beacons
= 0;
6551 set_bit(STATUS_READY
, &priv
->status
);
6553 iwl4965_rf_kill_ct_config(priv
);
6554 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6556 if (priv
->error_recovering
)
6557 iwl_error_recovery(priv
);
6562 queue_work(priv
->workqueue
, &priv
->restart
);
6565 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
6567 static void __iwl_down(struct iwl_priv
*priv
)
6569 unsigned long flags
;
6570 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6571 struct ieee80211_conf
*conf
= NULL
;
6573 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
6575 conf
= ieee80211_get_hw_conf(priv
->hw
);
6578 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6580 iwl_clear_stations_table(priv
);
6582 /* Unblock any waiting calls */
6583 wake_up_interruptible_all(&priv
->wait_command_queue
);
6585 iwl_cancel_deferred_work(priv
);
6587 /* Wipe out the EXIT_PENDING status bit if we are not actually
6588 * exiting the module */
6590 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6592 /* stop and reset the on-board processor */
6593 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
6595 /* tell the device to stop sending interrupts */
6596 iwl_disable_interrupts(priv
);
6598 if (priv
->mac80211_registered
)
6599 ieee80211_stop_queues(priv
->hw
);
6601 /* If we have not previously called iwl_init() then
6602 * clear all bits but the RF Kill and SUSPEND bits and return */
6603 if (!iwl_is_init(priv
)) {
6604 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6606 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6608 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6613 /* ...otherwise clear out all the status bits but the RF Kill and
6614 * SUSPEND bits and continue taking the NIC down. */
6615 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6617 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6619 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6621 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
6624 spin_lock_irqsave(&priv
->lock
, flags
);
6625 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
6626 spin_unlock_irqrestore(&priv
->lock
, flags
);
6628 iwl_hw_txq_ctx_stop(priv
);
6629 iwl_hw_rxq_stop(priv
);
6631 spin_lock_irqsave(&priv
->lock
, flags
);
6632 if (!iwl_grab_restricted_access(priv
)) {
6633 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
6634 APMG_CLK_VAL_DMA_CLK_RQT
);
6635 iwl_release_restricted_access(priv
);
6637 spin_unlock_irqrestore(&priv
->lock
, flags
);
6641 iwl_hw_nic_stop_master(priv
);
6642 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
6643 iwl_hw_nic_reset(priv
);
6646 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
6648 if (priv
->ibss_beacon
)
6649 dev_kfree_skb(priv
->ibss_beacon
);
6650 priv
->ibss_beacon
= NULL
;
6652 /* clear out any free frames */
6653 iwl_clear_free_frames(priv
);
6656 static void iwl_down(struct iwl_priv
*priv
)
6658 mutex_lock(&priv
->mutex
);
6660 mutex_unlock(&priv
->mutex
);
6663 #define MAX_HW_RESTARTS 5
6665 static int __iwl_up(struct iwl_priv
*priv
)
6667 DECLARE_MAC_BUF(mac
);
6671 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6672 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6676 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
6677 IWL_WARNING("Radio disabled by SW RF kill (module "
6682 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6684 rc
= iwl_hw_nic_init(priv
);
6686 IWL_ERROR("Unable to int nic\n");
6690 /* make sure rfkill handshake bits are cleared */
6691 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6692 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
6693 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
6695 /* clear (again), then enable host interrupts */
6696 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6697 iwl_enable_interrupts(priv
);
6699 /* really make sure rfkill handshake bits are cleared */
6700 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6701 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6703 /* Copy original ucode data image from disk into backup cache.
6704 * This will be used to initialize the on-board processor's
6705 * data SRAM for a clean start when the runtime program first loads. */
6706 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
6707 priv
->ucode_data
.len
);
6709 /* If platform's RF_KILL switch is set to KILL,
6710 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6711 * and getting things started */
6712 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
6713 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
6716 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) || hw_rf_kill
) {
6717 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6721 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
6723 iwl_clear_stations_table(priv
);
6725 /* load bootstrap state machine,
6726 * load bootstrap program into processor's memory,
6727 * prepare to load the "initialize" uCode */
6728 rc
= iwl_load_bsm(priv
);
6731 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc
);
6735 /* start card; "initialize" will load runtime ucode */
6736 iwl_nic_start(priv
);
6738 /* MAC Address location in EEPROM same for 3945/4965 */
6739 get_eeprom_mac(priv
, priv
->mac_addr
);
6740 IWL_DEBUG_INFO("MAC address: %s\n",
6741 print_mac(mac
, priv
->mac_addr
));
6743 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
6745 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
6750 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6753 /* tried to restart and config the device for as long as our
6754 * patience could withstand */
6755 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
6760 /*****************************************************************************
6762 * Workqueue callbacks
6764 *****************************************************************************/
6766 static void iwl_bg_init_alive_start(struct work_struct
*data
)
6768 struct iwl_priv
*priv
=
6769 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
6771 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6774 mutex_lock(&priv
->mutex
);
6775 iwl_init_alive_start(priv
);
6776 mutex_unlock(&priv
->mutex
);
6779 static void iwl_bg_alive_start(struct work_struct
*data
)
6781 struct iwl_priv
*priv
=
6782 container_of(data
, struct iwl_priv
, alive_start
.work
);
6784 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6787 mutex_lock(&priv
->mutex
);
6788 iwl_alive_start(priv
);
6789 mutex_unlock(&priv
->mutex
);
6792 static void iwl_bg_rf_kill(struct work_struct
*work
)
6794 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
6796 wake_up_interruptible(&priv
->wait_command_queue
);
6798 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6801 mutex_lock(&priv
->mutex
);
6803 if (!iwl_is_rfkill(priv
)) {
6804 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
6805 "HW and/or SW RF Kill no longer active, restarting "
6807 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6808 queue_work(priv
->workqueue
, &priv
->restart
);
6811 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
6812 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6813 "disabled by SW switch\n");
6815 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6816 "Kill switch must be turned off for "
6817 "wireless networking to work.\n");
6819 mutex_unlock(&priv
->mutex
);
6822 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6824 static void iwl_bg_scan_check(struct work_struct
*data
)
6826 struct iwl_priv
*priv
=
6827 container_of(data
, struct iwl_priv
, scan_check
.work
);
6829 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6832 mutex_lock(&priv
->mutex
);
6833 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
6834 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6835 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
6836 "Scan completion watchdog resetting adapter (%dms)\n",
6837 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
6838 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6839 queue_work(priv
->workqueue
, &priv
->restart
);
6841 mutex_unlock(&priv
->mutex
);
6844 static void iwl_bg_request_scan(struct work_struct
*data
)
6846 struct iwl_priv
*priv
=
6847 container_of(data
, struct iwl_priv
, request_scan
);
6848 struct iwl_host_cmd cmd
= {
6849 .id
= REPLY_SCAN_CMD
,
6850 .len
= sizeof(struct iwl_scan_cmd
),
6851 .meta
.flags
= CMD_SIZE_HUGE
,
6854 struct iwl_scan_cmd
*scan
;
6855 struct ieee80211_conf
*conf
= NULL
;
6859 conf
= ieee80211_get_hw_conf(priv
->hw
);
6861 mutex_lock(&priv
->mutex
);
6863 if (!iwl_is_ready(priv
)) {
6864 IWL_WARNING("request scan called when driver not ready.\n");
6868 /* Make sure the scan wasn't cancelled before this queued work
6869 * was given the chance to run... */
6870 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
6873 /* This should never be called or scheduled if there is currently
6874 * a scan active in the hardware. */
6875 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
6876 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6877 "Ignoring second request.\n");
6882 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6883 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6887 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6888 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6892 if (iwl_is_rfkill(priv
)) {
6893 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6897 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6898 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6902 if (!priv
->scan_bands
) {
6903 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6908 priv
->scan
= kmalloc(sizeof(struct iwl_scan_cmd
) +
6909 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
6916 memset(scan
, 0, sizeof(struct iwl_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
6918 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
6919 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
6921 if (iwl_is_associated(priv
)) {
6924 u32 suspend_time
= 100;
6925 u32 scan_suspend_time
= 100;
6926 unsigned long flags
;
6928 IWL_DEBUG_INFO("Scanning while associated...\n");
6930 spin_lock_irqsave(&priv
->lock
, flags
);
6931 interval
= priv
->beacon_int
;
6932 spin_unlock_irqrestore(&priv
->lock
, flags
);
6934 scan
->suspend_time
= 0;
6935 scan
->max_out_time
= cpu_to_le32(600 * 1024);
6937 interval
= suspend_time
;
6939 extra
= (suspend_time
/ interval
) << 22;
6940 scan_suspend_time
= (extra
|
6941 ((suspend_time
% interval
) * 1024));
6942 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
6943 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6944 scan_suspend_time
, interval
);
6947 /* We should add the ability for user to lock to PASSIVE ONLY */
6948 if (priv
->one_direct_scan
) {
6950 ("Kicking off one direct scan for '%s'\n",
6951 iwl_escape_essid(priv
->direct_ssid
,
6952 priv
->direct_ssid_len
));
6953 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6954 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
6955 memcpy(scan
->direct_scan
[0].ssid
,
6956 priv
->direct_ssid
, priv
->direct_ssid_len
);
6958 } else if (!iwl_is_associated(priv
)) {
6959 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6960 scan
->direct_scan
[0].len
= priv
->essid_len
;
6961 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
6966 /* We don't build a direct scan probe request; the uCode will do
6967 * that based on the direct_mask added to each channel entry */
6968 scan
->tx_cmd
.len
= cpu_to_le16(
6969 iwl_fill_probe_req(priv
, (struct ieee80211_mgmt
*)scan
->data
,
6970 IWL_MAX_SCAN_SIZE
- sizeof(scan
), 0));
6971 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6972 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6973 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6975 /* flags + rate selection */
6977 scan
->tx_cmd
.tx_flags
|= cpu_to_le32(0x200);
6979 switch (priv
->scan_bands
) {
6981 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6982 scan
->tx_cmd
.rate_n_flags
=
6983 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
6984 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
6986 scan
->good_CRC_th
= 0;
6987 phymode
= MODE_IEEE80211G
;
6991 scan
->tx_cmd
.rate_n_flags
=
6992 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
6993 RATE_MCS_ANT_B_MSK
);
6994 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
6995 phymode
= MODE_IEEE80211A
;
6999 IWL_WARNING("Invalid scan band count\n");
7003 /* select Rx chains */
7005 /* Force use of chains B and C (0x6) for scan Rx.
7006 * Avoid A (0x1) because of its off-channel reception on A-band.
7007 * MIMO is not used here, but value is required to make uCode happy. */
7008 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
7009 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
7010 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
7011 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
7013 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
7014 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
7018 ("Initiating direct scan for %s.\n",
7019 iwl_escape_essid(priv
->essid
, priv
->essid_len
));
7021 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7023 scan
->channel_count
=
7024 iwl_get_channels_for_scan(
7025 priv
, phymode
, 1, /* active */
7027 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
7029 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
7030 scan
->channel_count
* sizeof(struct iwl_scan_channel
);
7032 scan
->len
= cpu_to_le16(cmd
.len
);
7034 set_bit(STATUS_SCAN_HW
, &priv
->status
);
7035 rc
= iwl_send_cmd_sync(priv
, &cmd
);
7039 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
7040 IWL_SCAN_CHECK_WATCHDOG
);
7042 mutex_unlock(&priv
->mutex
);
7046 /* inform mac80211 sacn aborted */
7047 queue_work(priv
->workqueue
, &priv
->scan_completed
);
7048 mutex_unlock(&priv
->mutex
);
7051 static void iwl_bg_up(struct work_struct
*data
)
7053 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
7055 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7058 mutex_lock(&priv
->mutex
);
7060 mutex_unlock(&priv
->mutex
);
7063 static void iwl_bg_restart(struct work_struct
*data
)
7065 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
7067 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7071 queue_work(priv
->workqueue
, &priv
->up
);
7074 static void iwl_bg_rx_replenish(struct work_struct
*data
)
7076 struct iwl_priv
*priv
=
7077 container_of(data
, struct iwl_priv
, rx_replenish
);
7079 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7082 mutex_lock(&priv
->mutex
);
7083 iwl_rx_replenish(priv
);
7084 mutex_unlock(&priv
->mutex
);
7087 static void iwl_bg_post_associate(struct work_struct
*data
)
7089 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
7090 post_associate
.work
);
7093 struct ieee80211_conf
*conf
= NULL
;
7094 DECLARE_MAC_BUF(mac
);
7096 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7097 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
7101 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7103 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
7106 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7109 mutex_lock(&priv
->mutex
);
7111 conf
= ieee80211_get_hw_conf(priv
->hw
);
7113 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7114 iwl_commit_rxon(priv
);
7116 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7117 iwl_setup_rxon_timing(priv
);
7118 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7119 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7121 IWL_WARNING("REPLY_RXON_TIMING failed - "
7122 "Attempting to continue.\n");
7124 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7126 #ifdef CONFIG_IWLWIFI_HT
7127 if (priv
->is_ht_enabled
&& priv
->current_assoc_ht
.is_ht
)
7128 iwl4965_set_rxon_ht(priv
, &priv
->current_assoc_ht
);
7130 priv
->active_rate_ht
[0] = 0;
7131 priv
->active_rate_ht
[1] = 0;
7132 priv
->current_channel_width
= IWL_CHANNEL_WIDTH_20MHZ
;
7134 #endif /* CONFIG_IWLWIFI_HT*/
7135 iwl4965_set_rxon_chain(priv
);
7136 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7138 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7139 priv
->assoc_id
, priv
->beacon_int
);
7141 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7142 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
7144 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7146 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7147 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7148 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
7150 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7152 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7153 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7157 iwl_commit_rxon(priv
);
7159 switch (priv
->iw_mode
) {
7160 case IEEE80211_IF_TYPE_STA
:
7161 iwl_rate_scale_init(priv
->hw
, IWL_AP_ID
);
7164 case IEEE80211_IF_TYPE_IBSS
:
7166 /* clear out the station table */
7167 iwl_clear_stations_table(priv
);
7169 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7170 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
7171 iwl_rate_scale_init(priv
->hw
, IWL_STA_ID
);
7172 iwl_send_beacon_cmd(priv
);
7177 IWL_ERROR("%s Should not be called in %d mode\n",
7178 __FUNCTION__
, priv
->iw_mode
);
7182 iwl_sequence_reset(priv
);
7184 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7185 /* Enable Rx differential gain and sensitivity calibrations */
7186 iwl4965_chain_noise_reset(priv
);
7187 priv
->start_calib
= 1;
7188 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7190 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7191 priv
->assoc_station_added
= 1;
7193 #ifdef CONFIG_IWLWIFI_QOS
7194 iwl_activate_qos(priv
, 0);
7195 #endif /* CONFIG_IWLWIFI_QOS */
7196 mutex_unlock(&priv
->mutex
);
7199 static void iwl_bg_abort_scan(struct work_struct
*work
)
7201 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
7204 if (!iwl_is_ready(priv
))
7207 mutex_lock(&priv
->mutex
);
7209 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
7210 iwl_send_scan_abort(priv
);
7212 mutex_unlock(&priv
->mutex
);
7215 static void iwl_bg_scan_completed(struct work_struct
*work
)
7217 struct iwl_priv
*priv
=
7218 container_of(work
, struct iwl_priv
, scan_completed
);
7220 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
7222 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7225 ieee80211_scan_completed(priv
->hw
);
7227 /* Since setting the TXPOWER may have been deferred while
7228 * performing the scan, fire one off */
7229 mutex_lock(&priv
->mutex
);
7230 iwl_hw_reg_send_txpower(priv
);
7231 mutex_unlock(&priv
->mutex
);
7234 /*****************************************************************************
7236 * mac80211 entry point functions
7238 *****************************************************************************/
7240 static int iwl_mac_start(struct ieee80211_hw
*hw
)
7242 struct iwl_priv
*priv
= hw
->priv
;
7244 IWL_DEBUG_MAC80211("enter\n");
7246 /* we should be verifying the device is ready to be opened */
7247 mutex_lock(&priv
->mutex
);
7251 if (!iwl_is_rfkill(priv
))
7252 ieee80211_start_queues(priv
->hw
);
7254 mutex_unlock(&priv
->mutex
);
7255 IWL_DEBUG_MAC80211("leave\n");
7259 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
7261 struct iwl_priv
*priv
= hw
->priv
;
7263 IWL_DEBUG_MAC80211("enter\n");
7265 /*netif_stop_queue(dev); */
7266 flush_workqueue(priv
->workqueue
);
7267 IWL_DEBUG_MAC80211("leave\n");
7270 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7271 struct ieee80211_tx_control
*ctl
)
7273 struct iwl_priv
*priv
= hw
->priv
;
7275 IWL_DEBUG_MAC80211("enter\n");
7277 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
7278 IWL_DEBUG_MAC80211("leave - monitor\n");
7282 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
7285 if (iwl_tx_skb(priv
, skb
, ctl
))
7286 dev_kfree_skb_any(skb
);
7288 IWL_DEBUG_MAC80211("leave\n");
7292 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
7293 struct ieee80211_if_init_conf
*conf
)
7295 struct iwl_priv
*priv
= hw
->priv
;
7296 unsigned long flags
;
7297 DECLARE_MAC_BUF(mac
);
7299 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf
->if_id
, conf
->type
);
7301 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7302 print_mac(mac
, conf
->mac_addr
));
7304 if (priv
->interface_id
) {
7305 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7309 spin_lock_irqsave(&priv
->lock
, flags
);
7310 priv
->interface_id
= conf
->if_id
;
7312 spin_unlock_irqrestore(&priv
->lock
, flags
);
7314 mutex_lock(&priv
->mutex
);
7315 iwl_set_mode(priv
, conf
->type
);
7317 IWL_DEBUG_MAC80211("leave\n");
7318 mutex_unlock(&priv
->mutex
);
7324 * iwl_mac_config - mac80211 config callback
7326 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7327 * be set inappropriately and the driver currently sets the hardware up to
7328 * use it whenever needed.
7330 static int iwl_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
7332 struct iwl_priv
*priv
= hw
->priv
;
7333 const struct iwl_channel_info
*ch_info
;
7334 unsigned long flags
;
7336 mutex_lock(&priv
->mutex
);
7337 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
);
7339 if (!iwl_is_ready(priv
)) {
7340 IWL_DEBUG_MAC80211("leave - not ready\n");
7341 mutex_unlock(&priv
->mutex
);
7345 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7346 * what is exposed through include/ declrations */
7347 if (unlikely(!iwl_param_disable_hw_scan
&&
7348 test_bit(STATUS_SCANNING
, &priv
->status
))) {
7349 IWL_DEBUG_MAC80211("leave - scanning\n");
7350 mutex_unlock(&priv
->mutex
);
7354 spin_lock_irqsave(&priv
->lock
, flags
);
7356 ch_info
= iwl_get_channel_info(priv
, conf
->phymode
, conf
->channel
);
7357 if (!is_channel_valid(ch_info
)) {
7358 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7359 conf
->channel
, conf
->phymode
);
7360 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7361 spin_unlock_irqrestore(&priv
->lock
, flags
);
7362 mutex_unlock(&priv
->mutex
);
7366 #ifdef CONFIG_IWLWIFI_HT
7367 /* if we are switching fron ht to 2.4 clear flags
7368 * from any ht related info since 2.4 does not
7370 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
)
7371 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7372 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
7375 priv
->staging_rxon
.flags
= 0;
7376 #endif /* CONFIG_IWLWIFI_HT */
7378 iwl_set_rxon_channel(priv
, conf
->phymode
, conf
->channel
);
7380 iwl_set_flags_for_phymode(priv
, conf
->phymode
);
7382 /* The list of supported rates and rate mask can be different
7383 * for each phymode; since the phymode may have changed, reset
7384 * the rate mask to what mac80211 lists */
7387 spin_unlock_irqrestore(&priv
->lock
, flags
);
7389 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7390 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
7391 iwl_hw_channel_switch(priv
, conf
->channel
);
7392 mutex_unlock(&priv
->mutex
);
7397 iwl_radio_kill_sw(priv
, !conf
->radio_enabled
);
7399 if (!conf
->radio_enabled
) {
7400 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7401 mutex_unlock(&priv
->mutex
);
7405 if (iwl_is_rfkill(priv
)) {
7406 IWL_DEBUG_MAC80211("leave - RF kill\n");
7407 mutex_unlock(&priv
->mutex
);
7413 if (memcmp(&priv
->active_rxon
,
7414 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
7415 iwl_commit_rxon(priv
);
7417 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7419 IWL_DEBUG_MAC80211("leave\n");
7421 mutex_unlock(&priv
->mutex
);
7426 static void iwl_config_ap(struct iwl_priv
*priv
)
7430 if (priv
->status
& STATUS_EXIT_PENDING
)
7433 /* The following should be done only at AP bring up */
7434 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
7436 /* RXON - unassoc (to set timing command) */
7437 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7438 iwl_commit_rxon(priv
);
7441 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7442 iwl_setup_rxon_timing(priv
);
7443 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7444 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7446 IWL_WARNING("REPLY_RXON_TIMING failed - "
7447 "Attempting to continue.\n");
7449 iwl4965_set_rxon_chain(priv
);
7451 /* FIXME: what should be the assoc_id for AP? */
7452 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7453 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7454 priv
->staging_rxon
.flags
|=
7455 RXON_FLG_SHORT_PREAMBLE_MSK
;
7457 priv
->staging_rxon
.flags
&=
7458 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7460 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7461 if (priv
->assoc_capability
&
7462 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7463 priv
->staging_rxon
.flags
|=
7464 RXON_FLG_SHORT_SLOT_MSK
;
7466 priv
->staging_rxon
.flags
&=
7467 ~RXON_FLG_SHORT_SLOT_MSK
;
7469 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7470 priv
->staging_rxon
.flags
&=
7471 ~RXON_FLG_SHORT_SLOT_MSK
;
7473 /* restore RXON assoc */
7474 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7475 iwl_commit_rxon(priv
);
7476 #ifdef CONFIG_IWLWIFI_QOS
7477 iwl_activate_qos(priv
, 1);
7479 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7481 iwl_send_beacon_cmd(priv
);
7483 /* FIXME - we need to add code here to detect a totally new
7484 * configuration, reset the AP, unassoc, rxon timing, assoc,
7485 * clear sta table, add BCAST sta... */
7488 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
, int if_id
,
7489 struct ieee80211_if_conf
*conf
)
7491 struct iwl_priv
*priv
= hw
->priv
;
7492 DECLARE_MAC_BUF(mac
);
7493 unsigned long flags
;
7499 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
7500 (!conf
->beacon
|| !conf
->ssid_len
)) {
7502 ("Leaving in AP mode because HostAPD is not ready.\n");
7506 mutex_lock(&priv
->mutex
);
7508 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id
);
7510 IWL_DEBUG_MAC80211("bssid: %s\n",
7511 print_mac(mac
, conf
->bssid
));
7514 * very dubious code was here; the probe filtering flag is never set:
7516 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7517 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7519 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
7520 IWL_DEBUG_MAC80211("leave - scanning\n");
7521 mutex_unlock(&priv
->mutex
);
7525 if (priv
->interface_id
!= if_id
) {
7526 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7527 mutex_unlock(&priv
->mutex
);
7531 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7533 conf
->bssid
= priv
->mac_addr
;
7534 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
7535 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7536 print_mac(mac
, conf
->bssid
));
7538 if (priv
->ibss_beacon
)
7539 dev_kfree_skb(priv
->ibss_beacon
);
7541 priv
->ibss_beacon
= conf
->beacon
;
7544 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
7545 !is_multicast_ether_addr(conf
->bssid
)) {
7546 /* If there is currently a HW scan going on in the background
7547 * then we need to cancel it else the RXON below will fail. */
7548 if (iwl_scan_cancel_timeout(priv
, 100)) {
7549 IWL_WARNING("Aborted scan still in progress "
7551 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7552 mutex_unlock(&priv
->mutex
);
7555 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
7557 /* TODO: Audit driver for usage of these members and see
7558 * if mac80211 deprecates them (priv->bssid looks like it
7559 * shouldn't be there, but I haven't scanned the IBSS code
7560 * to verify) - jpk */
7561 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
7563 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7564 iwl_config_ap(priv
);
7566 priv
->staging_rxon
.filter_flags
|=
7567 RXON_FILTER_ASSOC_MSK
;
7568 rc
= iwl_commit_rxon(priv
);
7569 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
7570 iwl_rxon_add_station(
7571 priv
, priv
->active_rxon
.bssid_addr
, 1);
7575 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7576 iwl_commit_rxon(priv
);
7579 spin_lock_irqsave(&priv
->lock
, flags
);
7580 if (!conf
->ssid_len
)
7581 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7583 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
7585 priv
->essid_len
= conf
->ssid_len
;
7586 spin_unlock_irqrestore(&priv
->lock
, flags
);
7588 IWL_DEBUG_MAC80211("leave\n");
7589 mutex_unlock(&priv
->mutex
);
7594 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
7595 unsigned int changed_flags
,
7596 unsigned int *total_flags
,
7597 int mc_count
, struct dev_addr_list
*mc_list
)
7601 * see also iwl_connection_init_rx_config
7606 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
7607 struct ieee80211_if_init_conf
*conf
)
7609 struct iwl_priv
*priv
= hw
->priv
;
7611 IWL_DEBUG_MAC80211("enter\n");
7613 mutex_lock(&priv
->mutex
);
7614 if (priv
->interface_id
== conf
->if_id
) {
7615 priv
->interface_id
= 0;
7616 memset(priv
->bssid
, 0, ETH_ALEN
);
7617 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7618 priv
->essid_len
= 0;
7620 mutex_unlock(&priv
->mutex
);
7622 IWL_DEBUG_MAC80211("leave\n");
7626 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7627 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
7630 unsigned long flags
;
7631 struct iwl_priv
*priv
= hw
->priv
;
7633 IWL_DEBUG_MAC80211("enter\n");
7635 spin_lock_irqsave(&priv
->lock
, flags
);
7637 if (!iwl_is_ready_rf(priv
)) {
7639 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7643 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
7645 IWL_ERROR("ERROR: APs don't scan\n");
7649 /* if we just finished scan ask for delay */
7650 if (priv
->last_scan_jiffies
&&
7651 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
,
7657 IWL_DEBUG_SCAN("direct scan for "
7659 iwl_escape_essid(ssid
, len
), (int)len
);
7661 priv
->one_direct_scan
= 1;
7662 priv
->direct_ssid_len
= (u8
)
7663 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
7664 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
7667 rc
= iwl_scan_initiate(priv
);
7669 IWL_DEBUG_MAC80211("leave\n");
7672 spin_unlock_irqrestore(&priv
->lock
, flags
);
7677 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
7678 const u8
*local_addr
, const u8
*addr
,
7679 struct ieee80211_key_conf
*key
)
7681 struct iwl_priv
*priv
= hw
->priv
;
7682 DECLARE_MAC_BUF(mac
);
7686 IWL_DEBUG_MAC80211("enter\n");
7688 if (!iwl_param_hwcrypto
) {
7689 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7693 if (is_zero_ether_addr(addr
))
7694 /* only support pairwise keys */
7697 sta_id
= iwl_hw_find_station(priv
, addr
);
7698 if (sta_id
== IWL_INVALID_STATION
) {
7699 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7700 print_mac(mac
, addr
));
7704 mutex_lock(&priv
->mutex
);
7708 rc
= iwl_update_sta_key_info(priv
, key
, sta_id
);
7710 iwl_set_rxon_hwcrypto(priv
, 1);
7711 iwl_commit_rxon(priv
);
7712 key
->hw_key_idx
= sta_id
;
7713 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7714 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
7718 rc
= iwl_clear_sta_key_info(priv
, sta_id
);
7720 iwl_set_rxon_hwcrypto(priv
, 0);
7721 iwl_commit_rxon(priv
);
7722 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7729 IWL_DEBUG_MAC80211("leave\n");
7730 mutex_unlock(&priv
->mutex
);
7735 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7736 const struct ieee80211_tx_queue_params
*params
)
7738 struct iwl_priv
*priv
= hw
->priv
;
7739 #ifdef CONFIG_IWLWIFI_QOS
7740 unsigned long flags
;
7742 #endif /* CONFIG_IWL_QOS */
7744 IWL_DEBUG_MAC80211("enter\n");
7746 if (!iwl_is_ready_rf(priv
)) {
7747 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7751 if (queue
>= AC_NUM
) {
7752 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7756 #ifdef CONFIG_IWLWIFI_QOS
7757 if (!priv
->qos_data
.qos_enable
) {
7758 priv
->qos_data
.qos_active
= 0;
7759 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7762 q
= AC_NUM
- 1 - queue
;
7764 spin_lock_irqsave(&priv
->lock
, flags
);
7766 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7767 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7768 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7769 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7770 cpu_to_le16((params
->burst_time
* 100));
7772 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7773 priv
->qos_data
.qos_active
= 1;
7775 spin_unlock_irqrestore(&priv
->lock
, flags
);
7777 mutex_lock(&priv
->mutex
);
7778 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7779 iwl_activate_qos(priv
, 1);
7780 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7781 iwl_activate_qos(priv
, 0);
7783 mutex_unlock(&priv
->mutex
);
7785 #endif /*CONFIG_IWLWIFI_QOS */
7787 IWL_DEBUG_MAC80211("leave\n");
7791 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7792 struct ieee80211_tx_queue_stats
*stats
)
7794 struct iwl_priv
*priv
= hw
->priv
;
7796 struct iwl_tx_queue
*txq
;
7797 struct iwl_queue
*q
;
7798 unsigned long flags
;
7800 IWL_DEBUG_MAC80211("enter\n");
7802 if (!iwl_is_ready_rf(priv
)) {
7803 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7807 spin_lock_irqsave(&priv
->lock
, flags
);
7809 for (i
= 0; i
< AC_NUM
; i
++) {
7810 txq
= &priv
->txq
[i
];
7812 avail
= iwl_queue_space(q
);
7814 stats
->data
[i
].len
= q
->n_window
- avail
;
7815 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7816 stats
->data
[i
].count
= q
->n_window
;
7819 spin_unlock_irqrestore(&priv
->lock
, flags
);
7821 IWL_DEBUG_MAC80211("leave\n");
7826 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
7827 struct ieee80211_low_level_stats
*stats
)
7829 IWL_DEBUG_MAC80211("enter\n");
7830 IWL_DEBUG_MAC80211("leave\n");
7835 static u64
iwl_mac_get_tsf(struct ieee80211_hw
*hw
)
7837 IWL_DEBUG_MAC80211("enter\n");
7838 IWL_DEBUG_MAC80211("leave\n");
7843 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
7845 struct iwl_priv
*priv
= hw
->priv
;
7846 unsigned long flags
;
7848 mutex_lock(&priv
->mutex
);
7849 IWL_DEBUG_MAC80211("enter\n");
7851 priv
->lq_mngr
.lq_ready
= 0;
7852 #ifdef CONFIG_IWLWIFI_HT
7853 spin_lock_irqsave(&priv
->lock
, flags
);
7854 memset(&priv
->current_assoc_ht
, 0, sizeof(struct sta_ht_info
));
7855 spin_unlock_irqrestore(&priv
->lock
, flags
);
7856 #ifdef CONFIG_IWLWIFI_HT_AGG
7857 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7858 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7860 memset(&(priv
->lq_mngr
.agg_ctrl
), 0, sizeof(struct iwl_agg_control
));
7861 priv
->lq_mngr
.agg_ctrl
.tid_traffic_load_threshold
= 10;
7862 priv
->lq_mngr
.agg_ctrl
.ba_timeout
= 5000;
7863 priv
->lq_mngr
.agg_ctrl
.auto_agg
= 1;
7865 if (priv
->lq_mngr
.agg_ctrl
.auto_agg
)
7866 priv
->lq_mngr
.agg_ctrl
.requested_ba
= TID_ALL_ENABLED
;
7867 #endif /*CONFIG_IWLWIFI_HT_AGG */
7868 #endif /* CONFIG_IWLWIFI_HT */
7870 #ifdef CONFIG_IWLWIFI_QOS
7871 iwl_reset_qos(priv
);
7874 cancel_delayed_work(&priv
->post_associate
);
7876 spin_lock_irqsave(&priv
->lock
, flags
);
7878 priv
->assoc_capability
= 0;
7879 priv
->call_post_assoc_from_beacon
= 0;
7880 priv
->assoc_station_added
= 0;
7882 /* new association get rid of ibss beacon skb */
7883 if (priv
->ibss_beacon
)
7884 dev_kfree_skb(priv
->ibss_beacon
);
7886 priv
->ibss_beacon
= NULL
;
7888 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7889 priv
->timestamp1
= 0;
7890 priv
->timestamp0
= 0;
7891 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7892 priv
->beacon_int
= 0;
7894 spin_unlock_irqrestore(&priv
->lock
, flags
);
7896 /* Per mac80211.h: This is only used in IBSS mode... */
7897 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7898 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7899 mutex_unlock(&priv
->mutex
);
7903 if (!iwl_is_ready_rf(priv
)) {
7904 IWL_DEBUG_MAC80211("leave - not ready\n");
7905 mutex_unlock(&priv
->mutex
);
7909 priv
->only_active_channel
= 0;
7913 mutex_unlock(&priv
->mutex
);
7915 IWL_DEBUG_MAC80211("leave\n");
7919 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7920 struct ieee80211_tx_control
*control
)
7922 struct iwl_priv
*priv
= hw
->priv
;
7923 unsigned long flags
;
7925 mutex_lock(&priv
->mutex
);
7926 IWL_DEBUG_MAC80211("enter\n");
7928 if (!iwl_is_ready_rf(priv
)) {
7929 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7930 mutex_unlock(&priv
->mutex
);
7934 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7935 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7936 mutex_unlock(&priv
->mutex
);
7940 spin_lock_irqsave(&priv
->lock
, flags
);
7942 if (priv
->ibss_beacon
)
7943 dev_kfree_skb(priv
->ibss_beacon
);
7945 priv
->ibss_beacon
= skb
;
7949 IWL_DEBUG_MAC80211("leave\n");
7950 spin_unlock_irqrestore(&priv
->lock
, flags
);
7952 #ifdef CONFIG_IWLWIFI_QOS
7953 iwl_reset_qos(priv
);
7956 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
7958 mutex_unlock(&priv
->mutex
);
7963 #ifdef CONFIG_IWLWIFI_HT
7966 u16 advanced_coding_cap
:1;
7967 u16 supported_chan_width_set
:1;
7968 u16 mimo_power_save_mode
:2;
7974 u16 beam_forming
:1;
7976 u16 maximal_amsdu_size
:1;
7977 u16 cck_mode_at_40MHz
:1;
7978 u16 psmp_support
:1;
7979 u16 stbc_ctrl_frame_support
:1;
7980 u16 sig_txop_protection_support
:1;
7983 } __attribute__ ((packed
));
7985 union ht_param_info
{
7987 u8 max_rx_ampdu_factor
:2;
7992 } __attribute__ ((packed
));
7994 union ht_exra_param_info
{
7996 u8 ext_chan_offset
:2;
7997 u8 tx_chan_width
:1;
7999 u8 controlled_access_only
:1;
8000 u8 service_interval_granularity
:3;
8003 } __attribute__ ((packed
));
8005 union ht_operation_mode
{
8012 } __attribute__ ((packed
));
8015 static int sta_ht_info_init(struct ieee80211_ht_capability
*ht_cap
,
8016 struct ieee80211_ht_additional_info
*ht_extra
,
8017 struct sta_ht_info
*ht_info_ap
,
8018 struct sta_ht_info
*ht_info
)
8020 union ht_cap_info cap
;
8021 union ht_operation_mode op_mode
;
8022 union ht_param_info param_info
;
8023 union ht_exra_param_info extra_param_info
;
8025 IWL_DEBUG_MAC80211("enter: \n");
8028 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8033 cap
.val
= (u16
) le16_to_cpu(ht_cap
->capabilities_info
);
8034 param_info
.val
= ht_cap
->mac_ht_params_info
;
8037 ht_info
->sgf
|= 0x1;
8039 ht_info
->sgf
|= 0x2;
8040 ht_info
->is_green_field
= cap
.green_field
;
8041 ht_info
->max_amsdu_size
= cap
.maximal_amsdu_size
;
8042 ht_info
->supported_chan_width
= cap
.supported_chan_width_set
;
8043 ht_info
->tx_mimo_ps_mode
= cap
.mimo_power_save_mode
;
8044 memcpy(ht_info
->supp_rates
, ht_cap
->supported_mcs_set
, 16);
8046 ht_info
->ampdu_factor
= param_info
.max_rx_ampdu_factor
;
8047 ht_info
->mpdu_density
= param_info
.mpdu_density
;
8049 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8050 ht_cap
->supported_mcs_set
[0],
8051 ht_cap
->supported_mcs_set
[1]);
8054 ht_info
->control_channel
= ht_info_ap
->control_channel
;
8055 ht_info
->extension_chan_offset
=
8056 ht_info_ap
->extension_chan_offset
;
8057 ht_info
->tx_chan_width
= ht_info_ap
->tx_chan_width
;
8058 ht_info
->operating_mode
= ht_info_ap
->operating_mode
;
8062 extra_param_info
.val
= ht_extra
->ht_param
;
8063 ht_info
->control_channel
= ht_extra
->control_chan
;
8064 ht_info
->extension_chan_offset
=
8065 extra_param_info
.ext_chan_offset
;
8066 ht_info
->tx_chan_width
= extra_param_info
.tx_chan_width
;
8068 le16_to_cpu(ht_extra
->operation_mode
);
8069 ht_info
->operating_mode
= op_mode
.op_mode
;
8070 IWL_DEBUG_MAC80211("control channel %d\n",
8071 ht_extra
->control_chan
);
8076 IWL_DEBUG_MAC80211("leave\n");
8080 static int iwl_mac_conf_ht(struct ieee80211_hw
*hw
,
8081 struct ieee80211_ht_capability
*ht_cap
,
8082 struct ieee80211_ht_additional_info
*ht_extra
)
8084 struct iwl_priv
*priv
= hw
->priv
;
8087 IWL_DEBUG_MAC80211("enter: \n");
8089 rs
= sta_ht_info_init(ht_cap
, ht_extra
, NULL
, &priv
->current_assoc_ht
);
8090 iwl4965_set_rxon_chain(priv
);
8092 if (priv
&& priv
->assoc_id
&&
8093 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
8094 unsigned long flags
;
8096 spin_lock_irqsave(&priv
->lock
, flags
);
8097 if (priv
->beacon_int
)
8098 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8100 priv
->call_post_assoc_from_beacon
= 1;
8101 spin_unlock_irqrestore(&priv
->lock
, flags
);
8104 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8105 ht_extra
->control_chan
);
8110 static void iwl_set_ht_capab(struct ieee80211_hw
*hw
,
8111 struct ieee80211_ht_capability
*ht_cap
,
8114 union ht_cap_info cap
;
8115 union ht_param_info param_info
;
8117 memset(&cap
, 0, sizeof(union ht_cap_info
));
8118 memset(¶m_info
, 0, sizeof(union ht_param_info
));
8120 cap
.maximal_amsdu_size
= HT_IE_MAX_AMSDU_SIZE_4K
;
8121 cap
.green_field
= 1;
8124 cap
.supported_chan_width_set
= use_wide_chan
;
8125 cap
.mimo_power_save_mode
= 0x3;
8127 param_info
.max_rx_ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
8128 param_info
.mpdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
8129 ht_cap
->capabilities_info
= (__le16
) cpu_to_le16(cap
.val
);
8130 ht_cap
->mac_ht_params_info
= (u8
) param_info
.val
;
8132 ht_cap
->supported_mcs_set
[0] = 0xff;
8133 ht_cap
->supported_mcs_set
[1] = 0xff;
8134 ht_cap
->supported_mcs_set
[4] =
8135 (cap
.supported_chan_width_set
) ? 0x1: 0x0;
8138 static void iwl_mac_get_ht_capab(struct ieee80211_hw
*hw
,
8139 struct ieee80211_ht_capability
*ht_cap
)
8141 u8 use_wide_channel
= 1;
8142 struct iwl_priv
*priv
= hw
->priv
;
8144 IWL_DEBUG_MAC80211("enter: \n");
8145 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
8146 use_wide_channel
= 0;
8148 /* no fat tx allowed on 2.4GHZ */
8149 if (priv
->phymode
!= MODE_IEEE80211A
)
8150 use_wide_channel
= 0;
8152 iwl_set_ht_capab(hw
, ht_cap
, use_wide_channel
);
8153 IWL_DEBUG_MAC80211("leave: \n");
8155 #endif /*CONFIG_IWLWIFI_HT*/
8157 /*****************************************************************************
8161 *****************************************************************************/
8163 #ifdef CONFIG_IWLWIFI_DEBUG
8166 * The following adds a new attribute to the sysfs representation
8167 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8168 * used for controlling the debug level.
8170 * See the level definitions in iwl for details.
8173 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
8175 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
8177 static ssize_t
store_debug_level(struct device_driver
*d
,
8178 const char *buf
, size_t count
)
8180 char *p
= (char *)buf
;
8183 val
= simple_strtoul(p
, &p
, 0);
8185 printk(KERN_INFO DRV_NAME
8186 ": %s is not in hex or decimal form.\n", buf
);
8188 iwl_debug_level
= val
;
8190 return strnlen(buf
, count
);
8193 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
8194 show_debug_level
, store_debug_level
);
8196 #endif /* CONFIG_IWLWIFI_DEBUG */
8198 static ssize_t
show_rf_kill(struct device
*d
,
8199 struct device_attribute
*attr
, char *buf
)
8202 * 0 - RF kill not enabled
8203 * 1 - SW based RF kill active (sysfs)
8204 * 2 - HW based RF kill active
8205 * 3 - Both HW and SW based RF kill active
8207 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8208 int val
= (test_bit(STATUS_RF_KILL_SW
, &priv
->status
) ? 0x1 : 0x0) |
8209 (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? 0x2 : 0x0);
8211 return sprintf(buf
, "%i\n", val
);
8214 static ssize_t
store_rf_kill(struct device
*d
,
8215 struct device_attribute
*attr
,
8216 const char *buf
, size_t count
)
8218 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8220 mutex_lock(&priv
->mutex
);
8221 iwl_radio_kill_sw(priv
, buf
[0] == '1');
8222 mutex_unlock(&priv
->mutex
);
8227 static DEVICE_ATTR(rf_kill
, S_IWUSR
| S_IRUGO
, show_rf_kill
, store_rf_kill
);
8229 static ssize_t
show_temperature(struct device
*d
,
8230 struct device_attribute
*attr
, char *buf
)
8232 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8234 if (!iwl_is_alive(priv
))
8237 return sprintf(buf
, "%d\n", iwl_hw_get_temperature(priv
));
8240 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
8242 static ssize_t
show_rs_window(struct device
*d
,
8243 struct device_attribute
*attr
,
8246 struct iwl_priv
*priv
= d
->driver_data
;
8247 return iwl_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
8249 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
8251 static ssize_t
show_tx_power(struct device
*d
,
8252 struct device_attribute
*attr
, char *buf
)
8254 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8255 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
8258 static ssize_t
store_tx_power(struct device
*d
,
8259 struct device_attribute
*attr
,
8260 const char *buf
, size_t count
)
8262 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8263 char *p
= (char *)buf
;
8266 val
= simple_strtoul(p
, &p
, 10);
8268 printk(KERN_INFO DRV_NAME
8269 ": %s is not in decimal form.\n", buf
);
8271 iwl_hw_reg_set_txpower(priv
, val
);
8276 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
8278 static ssize_t
show_flags(struct device
*d
,
8279 struct device_attribute
*attr
, char *buf
)
8281 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8283 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
8286 static ssize_t
store_flags(struct device
*d
,
8287 struct device_attribute
*attr
,
8288 const char *buf
, size_t count
)
8290 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8291 u32 flags
= simple_strtoul(buf
, NULL
, 0);
8293 mutex_lock(&priv
->mutex
);
8294 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
8295 /* Cancel any currently running scans... */
8296 if (iwl_scan_cancel_timeout(priv
, 100))
8297 IWL_WARNING("Could not cancel scan.\n");
8299 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8301 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
8302 iwl_commit_rxon(priv
);
8305 mutex_unlock(&priv
->mutex
);
8310 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
8312 static ssize_t
show_filter_flags(struct device
*d
,
8313 struct device_attribute
*attr
, char *buf
)
8315 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8317 return sprintf(buf
, "0x%04X\n",
8318 le32_to_cpu(priv
->active_rxon
.filter_flags
));
8321 static ssize_t
store_filter_flags(struct device
*d
,
8322 struct device_attribute
*attr
,
8323 const char *buf
, size_t count
)
8325 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8326 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
8328 mutex_lock(&priv
->mutex
);
8329 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
8330 /* Cancel any currently running scans... */
8331 if (iwl_scan_cancel_timeout(priv
, 100))
8332 IWL_WARNING("Could not cancel scan.\n");
8334 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8335 "0x%04X\n", filter_flags
);
8336 priv
->staging_rxon
.filter_flags
=
8337 cpu_to_le32(filter_flags
);
8338 iwl_commit_rxon(priv
);
8341 mutex_unlock(&priv
->mutex
);
8346 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
8347 store_filter_flags
);
8349 static ssize_t
show_tune(struct device
*d
,
8350 struct device_attribute
*attr
, char *buf
)
8352 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8354 return sprintf(buf
, "0x%04X\n",
8355 (priv
->phymode
<< 8) |
8356 le16_to_cpu(priv
->active_rxon
.channel
));
8359 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
);
8361 static ssize_t
store_tune(struct device
*d
,
8362 struct device_attribute
*attr
,
8363 const char *buf
, size_t count
)
8365 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8366 char *p
= (char *)buf
;
8367 u16 tune
= simple_strtoul(p
, &p
, 0);
8368 u8 phymode
= (tune
>> 8) & 0xff;
8369 u16 channel
= tune
& 0xff;
8371 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode
, channel
);
8373 mutex_lock(&priv
->mutex
);
8374 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
) ||
8375 (priv
->phymode
!= phymode
)) {
8376 const struct iwl_channel_info
*ch_info
;
8378 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
8380 IWL_WARNING("Requested invalid phymode/channel "
8381 "combination: %d %d\n", phymode
, channel
);
8382 mutex_unlock(&priv
->mutex
);
8386 /* Cancel any currently running scans... */
8387 if (iwl_scan_cancel_timeout(priv
, 100))
8388 IWL_WARNING("Could not cancel scan.\n");
8390 IWL_DEBUG_INFO("Committing phymode and "
8391 "rxon.channel = %d %d\n",
8394 iwl_set_rxon_channel(priv
, phymode
, channel
);
8395 iwl_set_flags_for_phymode(priv
, phymode
);
8398 iwl_commit_rxon(priv
);
8401 mutex_unlock(&priv
->mutex
);
8406 static DEVICE_ATTR(tune
, S_IWUSR
| S_IRUGO
, show_tune
, store_tune
);
8408 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8410 static ssize_t
show_measurement(struct device
*d
,
8411 struct device_attribute
*attr
, char *buf
)
8413 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8414 struct iwl_spectrum_notification measure_report
;
8415 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
8416 u8
*data
= (u8
*) & measure_report
;
8417 unsigned long flags
;
8419 spin_lock_irqsave(&priv
->lock
, flags
);
8420 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
8421 spin_unlock_irqrestore(&priv
->lock
, flags
);
8424 memcpy(&measure_report
, &priv
->measure_report
, size
);
8425 priv
->measurement_status
= 0;
8426 spin_unlock_irqrestore(&priv
->lock
, flags
);
8428 while (size
&& (PAGE_SIZE
- len
)) {
8429 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8430 PAGE_SIZE
- len
, 1);
8432 if (PAGE_SIZE
- len
)
8436 size
-= min(size
, 16U);
8442 static ssize_t
store_measurement(struct device
*d
,
8443 struct device_attribute
*attr
,
8444 const char *buf
, size_t count
)
8446 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8447 struct ieee80211_measurement_params params
= {
8448 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
8449 .start_time
= cpu_to_le64(priv
->last_tsf
),
8450 .duration
= cpu_to_le16(1),
8452 u8 type
= IWL_MEASURE_BASIC
;
8458 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
8459 channel
= simple_strtoul(p
, NULL
, 0);
8461 params
.channel
= channel
;
8464 while (*p
&& *p
!= ' ')
8467 type
= simple_strtoul(p
+ 1, NULL
, 0);
8470 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8471 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
8472 iwl_get_measurement(priv
, ¶ms
, type
);
8477 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
8478 show_measurement
, store_measurement
);
8479 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8481 static ssize_t
store_retry_rate(struct device
*d
,
8482 struct device_attribute
*attr
,
8483 const char *buf
, size_t count
)
8485 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8487 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
8488 if (priv
->retry_rate
<= 0)
8489 priv
->retry_rate
= 1;
8494 static ssize_t
show_retry_rate(struct device
*d
,
8495 struct device_attribute
*attr
, char *buf
)
8497 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8498 return sprintf(buf
, "%d", priv
->retry_rate
);
8501 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
8504 static ssize_t
store_power_level(struct device
*d
,
8505 struct device_attribute
*attr
,
8506 const char *buf
, size_t count
)
8508 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8512 mode
= simple_strtoul(buf
, NULL
, 0);
8513 mutex_lock(&priv
->mutex
);
8515 if (!iwl_is_ready(priv
)) {
8520 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
8521 mode
= IWL_POWER_AC
;
8523 mode
|= IWL_POWER_ENABLED
;
8525 if (mode
!= priv
->power_mode
) {
8526 rc
= iwl_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
8528 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8531 priv
->power_mode
= mode
;
8537 mutex_unlock(&priv
->mutex
);
8541 #define MAX_WX_STRING 80
8543 /* Values are in microsecond */
8544 static const s32 timeout_duration
[] = {
8551 static const s32 period_duration
[] = {
8559 static ssize_t
show_power_level(struct device
*d
,
8560 struct device_attribute
*attr
, char *buf
)
8562 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8563 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
8566 p
+= sprintf(p
, "%d ", level
);
8568 case IWL_POWER_MODE_CAM
:
8570 p
+= sprintf(p
, "(AC)");
8572 case IWL_POWER_BATTERY
:
8573 p
+= sprintf(p
, "(BATTERY)");
8577 "(Timeout %dms, Period %dms)",
8578 timeout_duration
[level
- 1] / 1000,
8579 period_duration
[level
- 1] / 1000);
8582 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
8583 p
+= sprintf(p
, " OFF\n");
8585 p
+= sprintf(p
, " \n");
8587 return (p
- buf
+ 1);
8591 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
8594 static ssize_t
show_channels(struct device
*d
,
8595 struct device_attribute
*attr
, char *buf
)
8597 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8599 struct ieee80211_channel
*channels
= NULL
;
8600 const struct ieee80211_hw_mode
*hw_mode
= NULL
;
8603 if (!iwl_is_ready(priv
))
8606 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211G
);
8608 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211B
);
8610 channels
= hw_mode
->channels
;
8611 count
= hw_mode
->num_channels
;
8616 "Displaying %d channels in 2.4GHz band "
8617 "(802.11bg):\n", count
);
8619 for (i
= 0; i
< count
; i
++)
8620 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8622 channels
[i
].power_level
,
8624 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8625 " (IEEE 802.11h required)" : "",
8626 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8629 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8632 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8633 "active/passive" : "passive only");
8635 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211A
);
8637 channels
= hw_mode
->channels
;
8638 count
= hw_mode
->num_channels
;
8644 len
+= sprintf(&buf
[len
], "Displaying %d channels in 5.2GHz band "
8645 "(802.11a):\n", count
);
8647 for (i
= 0; i
< count
; i
++)
8648 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8650 channels
[i
].power_level
,
8652 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8653 " (IEEE 802.11h required)" : "",
8654 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8657 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8660 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8661 "active/passive" : "passive only");
8666 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
8668 static ssize_t
show_statistics(struct device
*d
,
8669 struct device_attribute
*attr
, char *buf
)
8671 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8672 u32 size
= sizeof(struct iwl_notif_statistics
);
8673 u32 len
= 0, ofs
= 0;
8674 u8
*data
= (u8
*) & priv
->statistics
;
8677 if (!iwl_is_alive(priv
))
8680 mutex_lock(&priv
->mutex
);
8681 rc
= iwl_send_statistics_request(priv
);
8682 mutex_unlock(&priv
->mutex
);
8686 "Error sending statistics request: 0x%08X\n", rc
);
8690 while (size
&& (PAGE_SIZE
- len
)) {
8691 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8692 PAGE_SIZE
- len
, 1);
8694 if (PAGE_SIZE
- len
)
8698 size
-= min(size
, 16U);
8704 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
8706 static ssize_t
show_antenna(struct device
*d
,
8707 struct device_attribute
*attr
, char *buf
)
8709 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8711 if (!iwl_is_alive(priv
))
8714 return sprintf(buf
, "%d\n", priv
->antenna
);
8717 static ssize_t
store_antenna(struct device
*d
,
8718 struct device_attribute
*attr
,
8719 const char *buf
, size_t count
)
8722 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8727 if (sscanf(buf
, "%1i", &ant
) != 1) {
8728 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8732 if ((ant
>= 0) && (ant
<= 2)) {
8733 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
8734 priv
->antenna
= (enum iwl_antenna
)ant
;
8736 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
8742 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
8744 static ssize_t
show_status(struct device
*d
,
8745 struct device_attribute
*attr
, char *buf
)
8747 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8748 if (!iwl_is_alive(priv
))
8750 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
8753 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
8755 static ssize_t
dump_error_log(struct device
*d
,
8756 struct device_attribute
*attr
,
8757 const char *buf
, size_t count
)
8759 char *p
= (char *)buf
;
8762 iwl_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
8764 return strnlen(buf
, count
);
8767 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
8769 static ssize_t
dump_event_log(struct device
*d
,
8770 struct device_attribute
*attr
,
8771 const char *buf
, size_t count
)
8773 char *p
= (char *)buf
;
8776 iwl_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
8778 return strnlen(buf
, count
);
8781 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
8783 /*****************************************************************************
8785 * driver setup and teardown
8787 *****************************************************************************/
8789 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
8791 priv
->workqueue
= create_workqueue(DRV_NAME
);
8793 init_waitqueue_head(&priv
->wait_command_queue
);
8795 INIT_WORK(&priv
->up
, iwl_bg_up
);
8796 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
8797 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
8798 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
8799 INIT_WORK(&priv
->request_scan
, iwl_bg_request_scan
);
8800 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
8801 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
8802 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
8803 INIT_DELAYED_WORK(&priv
->post_associate
, iwl_bg_post_associate
);
8804 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
8805 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
8806 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
8808 iwl_hw_setup_deferred_work(priv
);
8810 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
8811 iwl_irq_tasklet
, (unsigned long)priv
);
8814 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
8816 iwl_hw_cancel_deferred_work(priv
);
8818 cancel_delayed_work(&priv
->scan_check
);
8819 cancel_delayed_work(&priv
->alive_start
);
8820 cancel_delayed_work(&priv
->post_associate
);
8821 cancel_work_sync(&priv
->beacon_update
);
8824 static struct attribute
*iwl_sysfs_entries
[] = {
8825 &dev_attr_antenna
.attr
,
8826 &dev_attr_channels
.attr
,
8827 &dev_attr_dump_errors
.attr
,
8828 &dev_attr_dump_events
.attr
,
8829 &dev_attr_flags
.attr
,
8830 &dev_attr_filter_flags
.attr
,
8831 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8832 &dev_attr_measurement
.attr
,
8834 &dev_attr_power_level
.attr
,
8835 &dev_attr_retry_rate
.attr
,
8836 &dev_attr_rf_kill
.attr
,
8837 &dev_attr_rs_window
.attr
,
8838 &dev_attr_statistics
.attr
,
8839 &dev_attr_status
.attr
,
8840 &dev_attr_temperature
.attr
,
8841 &dev_attr_tune
.attr
,
8842 &dev_attr_tx_power
.attr
,
8847 static struct attribute_group iwl_attribute_group
= {
8848 .name
= NULL
, /* put in device directory */
8849 .attrs
= iwl_sysfs_entries
,
8852 static struct ieee80211_ops iwl_hw_ops
= {
8854 .start
= iwl_mac_start
,
8855 .stop
= iwl_mac_stop
,
8856 .add_interface
= iwl_mac_add_interface
,
8857 .remove_interface
= iwl_mac_remove_interface
,
8858 .config
= iwl_mac_config
,
8859 .config_interface
= iwl_mac_config_interface
,
8860 .configure_filter
= iwl_configure_filter
,
8861 .set_key
= iwl_mac_set_key
,
8862 .get_stats
= iwl_mac_get_stats
,
8863 .get_tx_stats
= iwl_mac_get_tx_stats
,
8864 .conf_tx
= iwl_mac_conf_tx
,
8865 .get_tsf
= iwl_mac_get_tsf
,
8866 .reset_tsf
= iwl_mac_reset_tsf
,
8867 .beacon_update
= iwl_mac_beacon_update
,
8868 #ifdef CONFIG_IWLWIFI_HT
8869 .conf_ht
= iwl_mac_conf_ht
,
8870 .get_ht_capab
= iwl_mac_get_ht_capab
,
8871 #ifdef CONFIG_IWLWIFI_HT_AGG
8872 .ht_tx_agg_start
= iwl_mac_ht_tx_agg_start
,
8873 .ht_tx_agg_stop
= iwl_mac_ht_tx_agg_stop
,
8874 .ht_rx_agg_start
= iwl_mac_ht_rx_agg_start
,
8875 .ht_rx_agg_stop
= iwl_mac_ht_rx_agg_stop
,
8876 #endif /* CONFIG_IWLWIFI_HT_AGG */
8877 #endif /* CONFIG_IWLWIFI_HT */
8878 .hw_scan
= iwl_mac_hw_scan
8881 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
8884 struct iwl_priv
*priv
;
8885 struct ieee80211_hw
*hw
;
8888 if (iwl_param_disable_hw_scan
) {
8889 IWL_DEBUG_INFO("Disabling hw_scan\n");
8890 iwl_hw_ops
.hw_scan
= NULL
;
8893 if ((iwl_param_queues_num
> IWL_MAX_NUM_QUEUES
) ||
8894 (iwl_param_queues_num
< IWL_MIN_NUM_QUEUES
)) {
8895 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8896 IWL_MIN_NUM_QUEUES
, IWL_MAX_NUM_QUEUES
);
8901 /* mac80211 allocates memory for this device instance, including
8902 * space for this driver's private structure */
8903 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwl_hw_ops
);
8905 IWL_ERROR("Can not allocate network device\n");
8909 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
8911 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8915 priv
->pci_dev
= pdev
;
8916 priv
->antenna
= (enum iwl_antenna
)iwl_param_antenna
;
8917 #ifdef CONFIG_IWLWIFI_DEBUG
8918 iwl_debug_level
= iwl_param_debug
;
8919 atomic_set(&priv
->restrict_refcnt
, 0);
8921 priv
->retry_rate
= 1;
8923 priv
->ibss_beacon
= NULL
;
8925 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8926 * the range of signal quality values that we'll provide.
8927 * Negative values for level/noise indicate that we'll provide dBm.
8928 * For WE, at least, non-0 values here *enable* display of values
8929 * in app (iwconfig). */
8930 hw
->max_rssi
= -20; /* signal level, negative indicates dBm */
8931 hw
->max_noise
= -20; /* noise level, negative indicates dBm */
8932 hw
->max_signal
= 100; /* link quality indication (%) */
8934 /* Tell mac80211 our Tx characteristics */
8935 hw
->flags
= IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
;
8938 #ifdef CONFIG_IWLWIFI_HT
8939 #ifdef CONFIG_IWLWIFI_HT_AGG
8941 #endif /* CONFIG_IWLWIFI_HT_AGG */
8942 #endif /* CONFIG_IWLWIFI_HT */
8944 spin_lock_init(&priv
->lock
);
8945 spin_lock_init(&priv
->power_data
.lock
);
8946 spin_lock_init(&priv
->sta_lock
);
8947 spin_lock_init(&priv
->hcmd_lock
);
8948 spin_lock_init(&priv
->lq_mngr
.lock
);
8950 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
8951 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
8953 INIT_LIST_HEAD(&priv
->free_frames
);
8955 mutex_init(&priv
->mutex
);
8956 if (pci_enable_device(pdev
)) {
8958 goto out_ieee80211_free_hw
;
8961 pci_set_master(pdev
);
8963 iwl_clear_stations_table(priv
);
8965 priv
->data_retry_limit
= -1;
8966 priv
->ieee_channels
= NULL
;
8967 priv
->ieee_rates
= NULL
;
8970 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
8972 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
8974 printk(KERN_WARNING DRV_NAME
": No suitable DMA available.\n");
8975 goto out_pci_disable_device
;
8978 pci_set_drvdata(pdev
, priv
);
8979 err
= pci_request_regions(pdev
, DRV_NAME
);
8981 goto out_pci_disable_device
;
8982 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8983 * PCI Tx retries from interfering with C3 CPU state */
8984 pci_write_config_byte(pdev
, 0x41, 0x00);
8985 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
8986 if (!priv
->hw_base
) {
8988 goto out_pci_release_regions
;
8991 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8992 (unsigned long long) pci_resource_len(pdev
, 0));
8993 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
8995 /* Initialize module parameter values here */
8997 if (iwl_param_disable
) {
8998 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
8999 IWL_DEBUG_INFO("Radio disabled.\n");
9002 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
9005 priv
->use_ant_b_for_management_frame
= 1; /* start with ant B */
9006 priv
->is_ht_enabled
= 1;
9007 priv
->channel_width
= IWL_CHANNEL_WIDTH_40MHZ
;
9008 priv
->valid_antenna
= 0x7; /* assume all 3 connected */
9009 priv
->ps_mode
= IWL_MIMO_PS_NONE
;
9010 priv
->cck_power_index_compensation
= iwl_read32(
9011 priv
, CSR_HW_REV_WA_REG
);
9013 iwl4965_set_rxon_chain(priv
);
9015 printk(KERN_INFO DRV_NAME
9016 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9018 /* Device-specific setup */
9019 if (iwl_hw_set_hw_setting(priv
)) {
9020 IWL_ERROR("failed to set hw settings\n");
9021 mutex_unlock(&priv
->mutex
);
9025 #ifdef CONFIG_IWLWIFI_QOS
9026 if (iwl_param_qos_enable
)
9027 priv
->qos_data
.qos_enable
= 1;
9029 iwl_reset_qos(priv
);
9031 priv
->qos_data
.qos_active
= 0;
9032 priv
->qos_data
.qos_cap
.val
= 0;
9033 #endif /* CONFIG_IWLWIFI_QOS */
9035 iwl_set_rxon_channel(priv
, MODE_IEEE80211G
, 6);
9036 iwl_setup_deferred_work(priv
);
9037 iwl_setup_rx_handlers(priv
);
9039 priv
->rates_mask
= IWL_RATES_MASK
;
9040 /* If power management is turned on, default to AC mode */
9041 priv
->power_mode
= IWL_POWER_AC
;
9042 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
9044 pci_enable_msi(pdev
);
9046 err
= request_irq(pdev
->irq
, iwl_isr
, IRQF_SHARED
, DRV_NAME
, priv
);
9048 IWL_ERROR("Error allocating IRQ %d\n", pdev
->irq
);
9049 goto out_disable_msi
;
9052 mutex_lock(&priv
->mutex
);
9054 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9056 IWL_ERROR("failed to create sysfs device attributes\n");
9057 mutex_unlock(&priv
->mutex
);
9058 goto out_release_irq
;
9061 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9062 * ucode filename and max sizes are card-specific. */
9063 err
= iwl_read_ucode(priv
);
9065 IWL_ERROR("Could not read microcode: %d\n", err
);
9066 mutex_unlock(&priv
->mutex
);
9070 mutex_unlock(&priv
->mutex
);
9072 IWL_DEBUG_INFO("Queing UP work.\n");
9074 queue_work(priv
->workqueue
, &priv
->up
);
9079 iwl_dealloc_ucode_pci(priv
);
9081 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9084 free_irq(pdev
->irq
, priv
);
9087 pci_disable_msi(pdev
);
9088 destroy_workqueue(priv
->workqueue
);
9089 priv
->workqueue
= NULL
;
9090 iwl_unset_hw_setting(priv
);
9093 pci_iounmap(pdev
, priv
->hw_base
);
9094 out_pci_release_regions
:
9095 pci_release_regions(pdev
);
9096 out_pci_disable_device
:
9097 pci_disable_device(pdev
);
9098 pci_set_drvdata(pdev
, NULL
);
9099 out_ieee80211_free_hw
:
9100 ieee80211_free_hw(priv
->hw
);
9105 static void iwl_pci_remove(struct pci_dev
*pdev
)
9107 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9108 struct list_head
*p
, *q
;
9114 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9116 mutex_lock(&priv
->mutex
);
9117 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
9119 mutex_unlock(&priv
->mutex
);
9121 /* Free MAC hash list for ADHOC */
9122 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
9123 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
9125 kfree(list_entry(p
, struct iwl_ibss_seq
, list
));
9129 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9131 iwl_dealloc_ucode_pci(priv
);
9134 iwl_rx_queue_free(priv
, &priv
->rxq
);
9135 iwl_hw_txq_ctx_free(priv
);
9137 iwl_unset_hw_setting(priv
);
9138 iwl_clear_stations_table(priv
);
9140 if (priv
->mac80211_registered
) {
9141 ieee80211_unregister_hw(priv
->hw
);
9142 iwl_rate_control_unregister(priv
->hw
);
9145 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9146 * priv->workqueue... so we can't take down the workqueue
9148 destroy_workqueue(priv
->workqueue
);
9149 priv
->workqueue
= NULL
;
9151 free_irq(pdev
->irq
, priv
);
9152 pci_disable_msi(pdev
);
9153 pci_iounmap(pdev
, priv
->hw_base
);
9154 pci_release_regions(pdev
);
9155 pci_disable_device(pdev
);
9156 pci_set_drvdata(pdev
, NULL
);
9158 kfree(priv
->channel_info
);
9160 kfree(priv
->ieee_channels
);
9161 kfree(priv
->ieee_rates
);
9163 if (priv
->ibss_beacon
)
9164 dev_kfree_skb(priv
->ibss_beacon
);
9166 ieee80211_free_hw(priv
->hw
);
9171 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
9173 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9175 mutex_lock(&priv
->mutex
);
9177 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9179 /* Take down the device; powers it off, etc. */
9182 if (priv
->mac80211_registered
)
9183 ieee80211_stop_queues(priv
->hw
);
9185 pci_save_state(pdev
);
9186 pci_disable_device(pdev
);
9187 pci_set_power_state(pdev
, PCI_D3hot
);
9189 mutex_unlock(&priv
->mutex
);
9194 static void iwl_resume(struct iwl_priv
*priv
)
9196 unsigned long flags
;
9198 /* The following it a temporary work around due to the
9199 * suspend / resume not fully initializing the NIC correctly.
9200 * Without all of the following, resume will not attempt to take
9201 * down the NIC (it shouldn't really need to) and will just try
9202 * and bring the NIC back up. However that fails during the
9203 * ucode verification process. This then causes iwl_down to be
9204 * called *after* iwl_hw_nic_init() has succeeded -- which
9205 * then lets the next init sequence succeed. So, we've
9206 * replicated all of that NIC init code here... */
9208 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9210 iwl_hw_nic_init(priv
);
9212 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9213 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
9214 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
9215 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9216 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9217 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9219 /* tell the device to stop sending interrupts */
9220 iwl_disable_interrupts(priv
);
9222 spin_lock_irqsave(&priv
->lock
, flags
);
9223 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
9225 if (!iwl_grab_restricted_access(priv
)) {
9226 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
9227 APMG_CLK_VAL_DMA_CLK_RQT
);
9228 iwl_release_restricted_access(priv
);
9230 spin_unlock_irqrestore(&priv
->lock
, flags
);
9234 iwl_hw_nic_reset(priv
);
9236 /* Bring the device back up */
9237 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9238 queue_work(priv
->workqueue
, &priv
->up
);
9241 static int iwl_pci_resume(struct pci_dev
*pdev
)
9243 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9246 printk(KERN_INFO
"Coming out of suspend...\n");
9248 mutex_lock(&priv
->mutex
);
9250 pci_set_power_state(pdev
, PCI_D0
);
9251 err
= pci_enable_device(pdev
);
9252 pci_restore_state(pdev
);
9255 * Suspend/Resume resets the PCI configuration space, so we have to
9256 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9257 * from interfering with C3 CPU state. pci_restore_state won't help
9258 * here since it only restores the first 64 bytes pci config header.
9260 pci_write_config_byte(pdev
, 0x41, 0x00);
9263 mutex_unlock(&priv
->mutex
);
9268 #endif /* CONFIG_PM */
9270 /*****************************************************************************
9272 * driver and module entry point
9274 *****************************************************************************/
9276 static struct pci_driver iwl_driver
= {
9278 .id_table
= iwl_hw_card_ids
,
9279 .probe
= iwl_pci_probe
,
9280 .remove
= __devexit_p(iwl_pci_remove
),
9282 .suspend
= iwl_pci_suspend
,
9283 .resume
= iwl_pci_resume
,
9287 static int __init
iwl_init(void)
9291 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
9292 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
9293 ret
= pci_register_driver(&iwl_driver
);
9295 IWL_ERROR("Unable to initialize PCI module\n");
9298 #ifdef CONFIG_IWLWIFI_DEBUG
9299 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9301 IWL_ERROR("Unable to create driver sysfs file\n");
9302 pci_unregister_driver(&iwl_driver
);
9310 static void __exit
iwl_exit(void)
9312 #ifdef CONFIG_IWLWIFI_DEBUG
9313 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9315 pci_unregister_driver(&iwl_driver
);
9318 module_param_named(antenna
, iwl_param_antenna
, int, 0444);
9319 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
9320 module_param_named(disable
, iwl_param_disable
, int, 0444);
9321 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
9322 module_param_named(hwcrypto
, iwl_param_hwcrypto
, int, 0444);
9323 MODULE_PARM_DESC(hwcrypto
,
9324 "using hardware crypto engine (default 0 [software])\n");
9325 module_param_named(debug
, iwl_param_debug
, int, 0444);
9326 MODULE_PARM_DESC(debug
, "debug output mask");
9327 module_param_named(disable_hw_scan
, iwl_param_disable_hw_scan
, int, 0444);
9328 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
9330 module_param_named(queues_num
, iwl_param_queues_num
, int, 0444);
9331 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
9334 module_param_named(qos_enable
, iwl_param_qos_enable
, int, 0444);
9335 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
9337 module_exit(iwl_exit
);
9338 module_init(iwl_init
);