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 *left
)
1805 u16 ret_rates
= 0, bit
;
1810 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1811 if (bit
& supported_rate
) {
1813 rates
[*cnt
] = iwl_rates
[i
].ieee
|
1814 ((bit
& basic_rate
) ? 0x80 : 0x00);
1818 (*cnt
>= IWL_SUPPORTED_RATES_IE_LEN
))
1826 #ifdef CONFIG_IWLWIFI_HT
1827 void static iwl_set_ht_capab(struct ieee80211_hw
*hw
,
1828 struct ieee80211_ht_capability
*ht_cap
,
1833 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1835 static u16
iwl_fill_probe_req(struct iwl_priv
*priv
,
1836 struct ieee80211_mgmt
*frame
,
1837 int left
, int is_direct
)
1841 u16 active_rates
, ret_rates
, cck_rates
;
1843 /* Make sure there is enough space for the probe request,
1844 * two mandatory IEs and the data */
1850 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1851 memcpy(frame
->da
, BROADCAST_ADDR
, ETH_ALEN
);
1852 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1853 memcpy(frame
->bssid
, BROADCAST_ADDR
, ETH_ALEN
);
1854 frame
->seq_ctrl
= 0;
1856 /* fill in our indirect SSID IE */
1863 pos
= &(frame
->u
.probe_req
.variable
[0]);
1864 *pos
++ = WLAN_EID_SSID
;
1867 /* fill in our direct SSID IE... */
1870 left
-= 2 + priv
->essid_len
;
1873 /* ... fill it in... */
1874 *pos
++ = WLAN_EID_SSID
;
1875 *pos
++ = priv
->essid_len
;
1876 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1877 pos
+= priv
->essid_len
;
1878 len
+= 2 + priv
->essid_len
;
1881 /* fill in supported rate */
1887 /* ... fill it in... */
1888 *pos
++ = WLAN_EID_SUPP_RATES
;
1891 priv
->active_rate
= priv
->rates_mask
;
1892 active_rates
= priv
->active_rate
;
1893 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1895 cck_rates
= IWL_CCK_RATES_MASK
& active_rates
;
1896 ret_rates
= iwl_supported_rate_to_ie(pos
, cck_rates
,
1897 priv
->active_rate_basic
, &left
);
1898 active_rates
&= ~ret_rates
;
1900 ret_rates
= iwl_supported_rate_to_ie(pos
, active_rates
,
1901 priv
->active_rate_basic
, &left
);
1902 active_rates
&= ~ret_rates
;
1906 if (active_rates
== 0)
1909 /* fill in supported extended rate */
1914 /* ... fill it in... */
1915 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1917 iwl_supported_rate_to_ie(pos
, active_rates
,
1918 priv
->active_rate_basic
, &left
);
1922 #ifdef CONFIG_IWLWIFI_HT
1923 if (is_direct
&& priv
->is_ht_enabled
) {
1924 u8 use_wide_chan
= 1;
1926 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
1929 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1930 *pos
++ = sizeof(struct ieee80211_ht_capability
);
1931 iwl_set_ht_capab(NULL
, (struct ieee80211_ht_capability
*)pos
,
1933 len
+= 2 + sizeof(struct ieee80211_ht_capability
);
1935 #endif /*CONFIG_IWLWIFI_HT */
1944 #ifdef CONFIG_IWLWIFI_QOS
1945 static int iwl_send_qos_params_command(struct iwl_priv
*priv
,
1946 struct iwl_qosparam_cmd
*qos
)
1949 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1950 sizeof(struct iwl_qosparam_cmd
), qos
);
1953 static void iwl_reset_qos(struct iwl_priv
*priv
)
1959 unsigned long flags
;
1962 spin_lock_irqsave(&priv
->lock
, flags
);
1963 priv
->qos_data
.qos_active
= 0;
1965 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) {
1966 if (priv
->qos_data
.qos_enable
)
1967 priv
->qos_data
.qos_active
= 1;
1968 if (!(priv
->active_rate
& 0xfff0)) {
1972 } else if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1973 if (priv
->qos_data
.qos_enable
)
1974 priv
->qos_data
.qos_active
= 1;
1975 } else if (!(priv
->staging_rxon
.flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
1980 if (priv
->qos_data
.qos_active
)
1983 priv
->qos_data
.def_qos_parm
.ac
[0].cw_min
= cpu_to_le16(cw_min
);
1984 priv
->qos_data
.def_qos_parm
.ac
[0].cw_max
= cpu_to_le16(cw_max
);
1985 priv
->qos_data
.def_qos_parm
.ac
[0].aifsn
= aifs
;
1986 priv
->qos_data
.def_qos_parm
.ac
[0].edca_txop
= 0;
1987 priv
->qos_data
.def_qos_parm
.ac
[0].reserved1
= 0;
1989 if (priv
->qos_data
.qos_active
) {
1991 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
= cpu_to_le16(cw_min
);
1992 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
= cpu_to_le16(cw_max
);
1993 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 7;
1994 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1995 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1998 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1999 cpu_to_le16((cw_min
+ 1) / 2 - 1);
2000 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2001 cpu_to_le16(cw_max
);
2002 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2004 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2007 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2009 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2012 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2013 cpu_to_le16((cw_min
+ 1) / 4 - 1);
2014 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2015 cpu_to_le16((cw_max
+ 1) / 2 - 1);
2016 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2017 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2019 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2022 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2025 for (i
= 1; i
< 4; i
++) {
2026 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2027 cpu_to_le16(cw_min
);
2028 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2029 cpu_to_le16(cw_max
);
2030 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= aifs
;
2031 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
2032 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2035 IWL_DEBUG_QOS("set QoS to default \n");
2037 spin_unlock_irqrestore(&priv
->lock
, flags
);
2040 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
2042 unsigned long flags
;
2047 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2050 if (!priv
->qos_data
.qos_enable
)
2053 spin_lock_irqsave(&priv
->lock
, flags
);
2054 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
2056 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
2057 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
2058 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2059 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
2061 if (priv
->qos_data
.qos_active
)
2062 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2063 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
2065 spin_unlock_irqrestore(&priv
->lock
, flags
);
2067 if (force
|| iwl_is_associated(priv
)) {
2068 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2069 priv
->qos_data
.qos_active
);
2071 iwl_send_qos_params_command(priv
,
2072 &(priv
->qos_data
.def_qos_parm
));
2076 #endif /* CONFIG_IWLWIFI_QOS */
2078 * Power management (not Tx power!) functions
2080 #define MSEC_TO_USEC 1024
2082 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2083 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2084 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2085 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2086 __constant_cpu_to_le32(X1), \
2087 __constant_cpu_to_le32(X2), \
2088 __constant_cpu_to_le32(X3), \
2089 __constant_cpu_to_le32(X4)}
2092 /* default power management (not Tx power) table values */
2094 static struct iwl_power_vec_entry range_0
[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), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2097 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2098 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2099 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2100 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2104 static struct iwl_power_vec_entry range_1
[IWL_POWER_AC
] = {
2105 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2106 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2107 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2108 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2109 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2110 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2111 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2112 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2113 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2114 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2117 int iwl_power_init_handle(struct iwl_priv
*priv
)
2120 struct iwl_power_mgr
*pow_data
;
2121 int size
= sizeof(struct iwl_power_vec_entry
) * IWL_POWER_AC
;
2124 IWL_DEBUG_POWER("Initialize power \n");
2126 pow_data
= &(priv
->power_data
);
2128 memset(pow_data
, 0, sizeof(*pow_data
));
2130 pow_data
->active_index
= IWL_POWER_RANGE_0
;
2131 pow_data
->dtim_val
= 0xffff;
2133 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
2134 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
2136 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
2140 struct iwl_powertable_cmd
*cmd
;
2142 IWL_DEBUG_POWER("adjust power command flags\n");
2144 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
2145 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
2148 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
2150 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
2156 static int iwl_update_power_cmd(struct iwl_priv
*priv
,
2157 struct iwl_powertable_cmd
*cmd
, u32 mode
)
2162 struct iwl_power_vec_entry
*range
;
2164 struct iwl_power_mgr
*pow_data
;
2166 if (mode
> IWL_POWER_INDEX_5
) {
2167 IWL_DEBUG_POWER("Error invalid power mode \n");
2170 pow_data
= &(priv
->power_data
);
2172 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
2173 range
= &pow_data
->pwr_range_0
[0];
2175 range
= &pow_data
->pwr_range_1
[1];
2177 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl_powertable_cmd
));
2179 #ifdef IWL_MAC80211_DISABLE
2180 if (priv
->assoc_network
!= NULL
) {
2181 unsigned long flags
;
2183 period
= priv
->assoc_network
->tim
.tim_period
;
2185 #endif /*IWL_MAC80211_DISABLE */
2186 skip
= range
[mode
].no_dtim
;
2195 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2197 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
2198 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
2199 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2202 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
2203 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
2204 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
2207 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
2208 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
2209 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
2210 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2211 le32_to_cpu(cmd
->sleep_interval
[0]),
2212 le32_to_cpu(cmd
->sleep_interval
[1]),
2213 le32_to_cpu(cmd
->sleep_interval
[2]),
2214 le32_to_cpu(cmd
->sleep_interval
[3]),
2215 le32_to_cpu(cmd
->sleep_interval
[4]));
2220 static int iwl_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
2222 u32 final_mode
= mode
;
2224 struct iwl_powertable_cmd cmd
;
2226 /* If on battery, set to 3,
2227 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2228 * else user level */
2230 case IWL_POWER_BATTERY
:
2231 final_mode
= IWL_POWER_INDEX_3
;
2234 final_mode
= IWL_POWER_MODE_CAM
;
2241 cmd
.keep_alive_beacons
= 0;
2243 iwl_update_power_cmd(priv
, &cmd
, final_mode
);
2245 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
2247 if (final_mode
== IWL_POWER_MODE_CAM
)
2248 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
2250 set_bit(STATUS_POWER_PMI
, &priv
->status
);
2255 int iwl_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2257 /* Filter incoming packets to determine if they are targeted toward
2258 * this network, discarding packets coming from ourselves */
2259 switch (priv
->iw_mode
) {
2260 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
2261 /* packets from our adapter are dropped (echo) */
2262 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
2264 /* {broad,multi}cast packets to our IBSS go through */
2265 if (is_multicast_ether_addr(header
->addr1
))
2266 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
2267 /* packets to our adapter go through */
2268 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2269 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
2270 /* packets from our adapter are dropped (echo) */
2271 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
2273 /* {broad,multi}cast packets to our BSS go through */
2274 if (is_multicast_ether_addr(header
->addr1
))
2275 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
2276 /* packets to our adapter go through */
2277 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2283 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2285 const char *iwl_get_tx_fail_reason(u32 status
)
2287 switch (status
& TX_STATUS_MSK
) {
2288 case TX_STATUS_SUCCESS
:
2290 TX_STATUS_ENTRY(SHORT_LIMIT
);
2291 TX_STATUS_ENTRY(LONG_LIMIT
);
2292 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
2293 TX_STATUS_ENTRY(MGMNT_ABORT
);
2294 TX_STATUS_ENTRY(NEXT_FRAG
);
2295 TX_STATUS_ENTRY(LIFE_EXPIRE
);
2296 TX_STATUS_ENTRY(DEST_PS
);
2297 TX_STATUS_ENTRY(ABORTED
);
2298 TX_STATUS_ENTRY(BT_RETRY
);
2299 TX_STATUS_ENTRY(STA_INVALID
);
2300 TX_STATUS_ENTRY(FRAG_DROPPED
);
2301 TX_STATUS_ENTRY(TID_DISABLE
);
2302 TX_STATUS_ENTRY(FRAME_FLUSHED
);
2303 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
2304 TX_STATUS_ENTRY(TX_LOCKED
);
2305 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
2312 * iwl_scan_cancel - Cancel any currently executing HW scan
2314 * NOTE: priv->mutex is not required before calling this function
2316 static int iwl_scan_cancel(struct iwl_priv
*priv
)
2318 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2319 clear_bit(STATUS_SCANNING
, &priv
->status
);
2323 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2324 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2325 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2326 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
2327 queue_work(priv
->workqueue
, &priv
->abort_scan
);
2330 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2332 return test_bit(STATUS_SCANNING
, &priv
->status
);
2339 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2340 * @ms: amount of time to wait (in milliseconds) for scan to abort
2342 * NOTE: priv->mutex must be held before calling this function
2344 static int iwl_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
2346 unsigned long now
= jiffies
;
2349 ret
= iwl_scan_cancel(priv
);
2351 mutex_unlock(&priv
->mutex
);
2352 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
2353 test_bit(STATUS_SCANNING
, &priv
->status
))
2355 mutex_lock(&priv
->mutex
);
2357 return test_bit(STATUS_SCANNING
, &priv
->status
);
2363 static void iwl_sequence_reset(struct iwl_priv
*priv
)
2365 /* Reset ieee stats */
2367 /* We don't reset the net_device_stats (ieee->stats) on
2370 priv
->last_seq_num
= -1;
2371 priv
->last_frag_num
= -1;
2372 priv
->last_packet_time
= 0;
2374 iwl_scan_cancel(priv
);
2377 #define MAX_UCODE_BEACON_INTERVAL 4096
2378 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2380 static __le16
iwl_adjust_beacon_interval(u16 beacon_val
)
2383 u16 beacon_factor
= 0;
2386 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
2387 / MAX_UCODE_BEACON_INTERVAL
;
2388 new_val
= beacon_val
/ beacon_factor
;
2390 return cpu_to_le16(new_val
);
2393 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
2395 u64 interval_tm_unit
;
2397 unsigned long flags
;
2398 struct ieee80211_conf
*conf
= NULL
;
2401 conf
= ieee80211_get_hw_conf(priv
->hw
);
2403 spin_lock_irqsave(&priv
->lock
, flags
);
2404 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp1
);
2405 priv
->rxon_timing
.timestamp
.dw
[0] = cpu_to_le32(priv
->timestamp0
);
2407 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
2409 tsf
= priv
->timestamp1
;
2410 tsf
= ((tsf
<< 32) | priv
->timestamp0
);
2412 beacon_int
= priv
->beacon_int
;
2413 spin_unlock_irqrestore(&priv
->lock
, flags
);
2415 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
2416 if (beacon_int
== 0) {
2417 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
2418 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
2420 priv
->rxon_timing
.beacon_interval
=
2421 cpu_to_le16(beacon_int
);
2422 priv
->rxon_timing
.beacon_interval
=
2423 iwl_adjust_beacon_interval(
2424 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2427 priv
->rxon_timing
.atim_window
= 0;
2429 priv
->rxon_timing
.beacon_interval
=
2430 iwl_adjust_beacon_interval(conf
->beacon_int
);
2431 /* TODO: we need to get atim_window from upper stack
2432 * for now we set to 0 */
2433 priv
->rxon_timing
.atim_window
= 0;
2437 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
2438 result
= do_div(tsf
, interval_tm_unit
);
2439 priv
->rxon_timing
.beacon_init_val
=
2440 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
2443 ("beacon interval %d beacon timer %d beacon tim %d\n",
2444 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
2445 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
2446 le16_to_cpu(priv
->rxon_timing
.atim_window
));
2449 static int iwl_scan_initiate(struct iwl_priv
*priv
)
2451 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
2452 IWL_ERROR("APs don't scan.\n");
2456 if (!iwl_is_ready_rf(priv
)) {
2457 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2461 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2462 IWL_DEBUG_SCAN("Scan already in progress.\n");
2466 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2467 IWL_DEBUG_SCAN("Scan request while abort pending. "
2472 IWL_DEBUG_INFO("Starting scan...\n");
2473 priv
->scan_bands
= 2;
2474 set_bit(STATUS_SCANNING
, &priv
->status
);
2475 priv
->scan_start
= jiffies
;
2476 priv
->scan_pass_start
= priv
->scan_start
;
2478 queue_work(priv
->workqueue
, &priv
->request_scan
);
2483 static int iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
2485 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
2488 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
2490 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
2495 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
)
2497 if (phymode
== MODE_IEEE80211A
) {
2498 priv
->staging_rxon
.flags
&=
2499 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
2500 | RXON_FLG_CCK_MSK
);
2501 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2503 /* Copied from iwl_bg_post_associate() */
2504 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2505 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2507 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2509 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
2510 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2512 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
2513 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
2514 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
2519 * initilize rxon structure with default values fromm eeprom
2521 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
)
2523 const struct iwl_channel_info
*ch_info
;
2525 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2527 switch (priv
->iw_mode
) {
2528 case IEEE80211_IF_TYPE_AP
:
2529 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2532 case IEEE80211_IF_TYPE_STA
:
2533 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2534 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2537 case IEEE80211_IF_TYPE_IBSS
:
2538 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2539 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2540 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2541 RXON_FILTER_ACCEPT_GRP_MSK
;
2544 case IEEE80211_IF_TYPE_MNTR
:
2545 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2546 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2547 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2552 /* TODO: Figure out when short_preamble would be set and cache from
2554 if (!hw_to_local(priv
->hw
)->short_preamble
)
2555 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2557 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2560 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
,
2561 le16_to_cpu(priv
->staging_rxon
.channel
));
2564 ch_info
= &priv
->channel_info
[0];
2567 * in some case A channels are all non IBSS
2568 * in this case force B/G channel
2570 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2571 !(is_channel_ibss(ch_info
)))
2572 ch_info
= &priv
->channel_info
[0];
2574 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2575 if (is_channel_a_band(ch_info
))
2576 priv
->phymode
= MODE_IEEE80211A
;
2578 priv
->phymode
= MODE_IEEE80211G
;
2580 iwl_set_flags_for_phymode(priv
, priv
->phymode
);
2582 priv
->staging_rxon
.ofdm_basic_rates
=
2583 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2584 priv
->staging_rxon
.cck_basic_rates
=
2585 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2587 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
2588 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
2589 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2590 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
2591 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
2592 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
2593 iwl4965_set_rxon_chain(priv
);
2596 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
2598 if (!iwl_is_ready_rf(priv
))
2601 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2602 const struct iwl_channel_info
*ch_info
;
2604 ch_info
= iwl_get_channel_info(priv
,
2606 le16_to_cpu(priv
->staging_rxon
.channel
));
2608 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2609 IWL_ERROR("channel %d not IBSS channel\n",
2610 le16_to_cpu(priv
->staging_rxon
.channel
));
2615 cancel_delayed_work(&priv
->scan_check
);
2616 if (iwl_scan_cancel_timeout(priv
, 100)) {
2617 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2618 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2622 priv
->iw_mode
= mode
;
2624 iwl_connection_init_rx_config(priv
);
2625 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2627 iwl_clear_stations_table(priv
);
2629 iwl_commit_rxon(priv
);
2634 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2635 struct ieee80211_tx_control
*ctl
,
2636 struct iwl_cmd
*cmd
,
2637 struct sk_buff
*skb_frag
,
2640 struct iwl_hw_key
*keyinfo
= &priv
->stations
[ctl
->key_idx
].keyinfo
;
2642 switch (keyinfo
->alg
) {
2644 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2645 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2646 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2651 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2654 memcpy(cmd
->cmd
.tx
.tkip_mic
.byte
, skb_frag
->tail
- 8,
2657 memset(cmd
->cmd
.tx
.tkip_mic
.byte
, 0, 8);
2662 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2663 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2665 if (keyinfo
->keylen
== 13)
2666 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2668 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2670 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2671 "with key %d\n", ctl
->key_idx
);
2675 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2681 * handle build REPLY_TX command notification.
2683 static void iwl_build_tx_cmd_basic(struct iwl_priv
*priv
,
2684 struct iwl_cmd
*cmd
,
2685 struct ieee80211_tx_control
*ctrl
,
2686 struct ieee80211_hdr
*hdr
,
2687 int is_unicast
, u8 std_id
)
2690 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2691 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2693 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2694 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2695 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2696 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2697 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2698 if (ieee80211_is_probe_response(fc
) &&
2699 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2700 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2702 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2703 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2706 cmd
->cmd
.tx
.sta_id
= std_id
;
2707 if (ieee80211_get_morefrag(hdr
))
2708 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2710 qc
= ieee80211_get_qos_ctrl(hdr
);
2712 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2713 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2715 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2717 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2718 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2719 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2720 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2721 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2722 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2725 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2726 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2728 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2729 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2730 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2731 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2732 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2735 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2738 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2740 cmd
->cmd
.tx
.driver_txop
= 0;
2741 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2742 cmd
->cmd
.tx
.next_frame_len
= 0;
2745 static int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2748 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2749 DECLARE_MAC_BUF(mac
);
2751 /* If this frame is broadcast or not data then use the broadcast
2753 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2754 is_multicast_ether_addr(hdr
->addr1
))
2755 return priv
->hw_setting
.bcast_sta_id
;
2757 switch (priv
->iw_mode
) {
2759 /* If this frame is part of a BSS network (we're a station), then
2760 * we use the AP's station id */
2761 case IEEE80211_IF_TYPE_STA
:
2764 /* If we are an AP, then find the station, or use BCAST */
2765 case IEEE80211_IF_TYPE_AP
:
2766 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2767 if (sta_id
!= IWL_INVALID_STATION
)
2769 return priv
->hw_setting
.bcast_sta_id
;
2771 /* If this frame is part of a IBSS network, then we use the
2772 * target specific station id */
2773 case IEEE80211_IF_TYPE_IBSS
:
2774 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2775 if (sta_id
!= IWL_INVALID_STATION
)
2778 sta_id
= iwl_add_station(priv
, hdr
->addr1
, 0, CMD_ASYNC
);
2780 if (sta_id
!= IWL_INVALID_STATION
)
2783 IWL_DEBUG_DROP("Station %s not in station map. "
2784 "Defaulting to broadcast...\n",
2785 print_mac(mac
, hdr
->addr1
));
2786 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2787 return priv
->hw_setting
.bcast_sta_id
;
2790 IWL_WARNING("Unkown mode of operation: %d", priv
->iw_mode
);
2791 return priv
->hw_setting
.bcast_sta_id
;
2796 * start REPLY_TX command process
2798 static int iwl_tx_skb(struct iwl_priv
*priv
,
2799 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2801 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2802 struct iwl_tfd_frame
*tfd
;
2804 int txq_id
= ctl
->queue
;
2805 struct iwl_tx_queue
*txq
= NULL
;
2806 struct iwl_queue
*q
= NULL
;
2807 dma_addr_t phys_addr
;
2808 dma_addr_t txcmd_phys
;
2809 struct iwl_cmd
*out_cmd
= NULL
;
2810 u16 len
, idx
, len_org
;
2811 u8 id
, hdr_len
, unicast
;
2816 u8 wait_write_ptr
= 0;
2817 unsigned long flags
;
2820 spin_lock_irqsave(&priv
->lock
, flags
);
2821 if (iwl_is_rfkill(priv
)) {
2822 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2826 if (!priv
->interface_id
) {
2827 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2831 if ((ctl
->tx_rate
& 0xFF) == IWL_INVALID_RATE
) {
2832 IWL_ERROR("ERROR: No TX rate available.\n");
2836 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2839 fc
= le16_to_cpu(hdr
->frame_control
);
2841 #ifdef CONFIG_IWLWIFI_DEBUG
2842 if (ieee80211_is_auth(fc
))
2843 IWL_DEBUG_TX("Sending AUTH frame\n");
2844 else if (ieee80211_is_assoc_request(fc
))
2845 IWL_DEBUG_TX("Sending ASSOC frame\n");
2846 else if (ieee80211_is_reassoc_request(fc
))
2847 IWL_DEBUG_TX("Sending REASSOC frame\n");
2850 if (!iwl_is_associated(priv
) &&
2851 ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
)) {
2852 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2856 spin_unlock_irqrestore(&priv
->lock
, flags
);
2858 hdr_len
= ieee80211_get_hdrlen(fc
);
2859 sta_id
= iwl_get_sta_id(priv
, hdr
);
2860 if (sta_id
== IWL_INVALID_STATION
) {
2861 DECLARE_MAC_BUF(mac
);
2863 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2864 print_mac(mac
, hdr
->addr1
));
2868 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2870 qc
= ieee80211_get_qos_ctrl(hdr
);
2872 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2873 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2875 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2877 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2879 #ifdef CONFIG_IWLWIFI_HT
2880 #ifdef CONFIG_IWLWIFI_HT_AGG
2881 /* aggregation is on for this <sta,tid> */
2882 if (ctl
->flags
& IEEE80211_TXCTL_HT_MPDU_AGG
)
2883 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2884 #endif /* CONFIG_IWLWIFI_HT_AGG */
2885 #endif /* CONFIG_IWLWIFI_HT */
2887 txq
= &priv
->txq
[txq_id
];
2890 spin_lock_irqsave(&priv
->lock
, flags
);
2892 tfd
= &txq
->bd
[q
->first_empty
];
2893 memset(tfd
, 0, sizeof(*tfd
));
2894 control_flags
= (u32
*) tfd
;
2895 idx
= get_cmd_index(q
, q
->first_empty
, 0);
2897 memset(&(txq
->txb
[q
->first_empty
]), 0, sizeof(struct iwl_tx_info
));
2898 txq
->txb
[q
->first_empty
].skb
[0] = skb
;
2899 memcpy(&(txq
->txb
[q
->first_empty
].status
.control
),
2900 ctl
, sizeof(struct ieee80211_tx_control
));
2901 out_cmd
= &txq
->cmd
[idx
];
2902 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2903 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2904 out_cmd
->hdr
.cmd
= REPLY_TX
;
2905 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2906 INDEX_TO_SEQ(q
->first_empty
)));
2907 /* copy frags header */
2908 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2910 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2911 len
= priv
->hw_setting
.tx_cmd_len
+
2912 sizeof(struct iwl_cmd_header
) + hdr_len
;
2915 len
= (len
+ 3) & ~3;
2922 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2923 offsetof(struct iwl_cmd
, hdr
);
2925 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2927 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2928 iwl_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, 0);
2930 /* 802.11 null functions have no payload... */
2931 len
= skb
->len
- hdr_len
;
2933 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2934 len
, PCI_DMA_TODEVICE
);
2935 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2939 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2941 len
= (u16
)skb
->len
;
2942 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2944 /* TODO need this for burst mode later on */
2945 iwl_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2947 /* set is_hcca to 0; it probably will never be implemented */
2948 iwl_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2950 iwl4965_tx_cmd(priv
, out_cmd
, sta_id
, txcmd_phys
,
2951 hdr
, hdr_len
, ctl
, NULL
);
2953 if (!ieee80211_get_morefrag(hdr
)) {
2954 txq
->need_update
= 1;
2956 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2957 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2961 txq
->need_update
= 0;
2964 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2965 sizeof(out_cmd
->cmd
.tx
));
2967 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2968 ieee80211_get_hdrlen(fc
));
2970 iwl4965_tx_queue_update_wr_ptr(priv
, txq
, len
);
2972 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, q
->n_bd
);
2973 rc
= iwl_tx_queue_update_write_ptr(priv
, txq
);
2974 spin_unlock_irqrestore(&priv
->lock
, flags
);
2979 if ((iwl_queue_space(q
) < q
->high_mark
)
2980 && priv
->mac80211_registered
) {
2981 if (wait_write_ptr
) {
2982 spin_lock_irqsave(&priv
->lock
, flags
);
2983 txq
->need_update
= 1;
2984 iwl_tx_queue_update_write_ptr(priv
, txq
);
2985 spin_unlock_irqrestore(&priv
->lock
, flags
);
2988 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2994 spin_unlock_irqrestore(&priv
->lock
, flags
);
2999 static void iwl_set_rate(struct iwl_priv
*priv
)
3001 const struct ieee80211_hw_mode
*hw
= NULL
;
3002 struct ieee80211_rate
*rate
;
3005 hw
= iwl_get_hw_mode(priv
, priv
->phymode
);
3007 priv
->active_rate
= 0;
3008 priv
->active_rate_basic
= 0;
3010 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3011 hw
->mode
== MODE_IEEE80211A
?
3012 'a' : ((hw
->mode
== MODE_IEEE80211B
) ? 'b' : 'g'));
3014 for (i
= 0; i
< hw
->num_rates
; i
++) {
3015 rate
= &(hw
->rates
[i
]);
3016 if ((rate
->val
< IWL_RATE_COUNT
) &&
3017 (rate
->flags
& IEEE80211_RATE_SUPPORTED
)) {
3018 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3019 rate
->val
, iwl_rates
[rate
->val
].plcp
,
3020 (rate
->flags
& IEEE80211_RATE_BASIC
) ?
3022 priv
->active_rate
|= (1 << rate
->val
);
3023 if (rate
->flags
& IEEE80211_RATE_BASIC
)
3024 priv
->active_rate_basic
|= (1 << rate
->val
);
3026 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3027 rate
->val
, iwl_rates
[rate
->val
].plcp
);
3030 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3031 priv
->active_rate
, priv
->active_rate_basic
);
3034 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3035 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3038 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
3039 priv
->staging_rxon
.cck_basic_rates
=
3040 ((priv
->active_rate_basic
&
3041 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
3043 priv
->staging_rxon
.cck_basic_rates
=
3044 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
3046 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
3047 priv
->staging_rxon
.ofdm_basic_rates
=
3048 ((priv
->active_rate_basic
&
3049 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
3050 IWL_FIRST_OFDM_RATE
) & 0xFF;
3052 priv
->staging_rxon
.ofdm_basic_rates
=
3053 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
3056 static void iwl_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
3058 unsigned long flags
;
3060 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
3063 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3064 disable_radio
? "OFF" : "ON");
3066 if (disable_radio
) {
3067 iwl_scan_cancel(priv
);
3068 /* FIXME: This is a workaround for AP */
3069 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
3070 spin_lock_irqsave(&priv
->lock
, flags
);
3071 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3072 CSR_UCODE_SW_BIT_RFKILL
);
3073 spin_unlock_irqrestore(&priv
->lock
, flags
);
3074 iwl_send_card_state(priv
, CARD_STATE_CMD_DISABLE
, 0);
3075 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3080 spin_lock_irqsave(&priv
->lock
, flags
);
3081 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
3083 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3084 spin_unlock_irqrestore(&priv
->lock
, flags
);
3089 spin_lock_irqsave(&priv
->lock
, flags
);
3090 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3091 if (!iwl_grab_restricted_access(priv
))
3092 iwl_release_restricted_access(priv
);
3093 spin_unlock_irqrestore(&priv
->lock
, flags
);
3095 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
3096 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3097 "disabled by HW switch\n");
3101 queue_work(priv
->workqueue
, &priv
->restart
);
3105 void iwl_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
3106 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
3109 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
3111 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
3114 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
3117 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
3118 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3119 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3120 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3121 RX_RES_STATUS_BAD_ICV_MIC
)
3122 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
3123 case RX_RES_STATUS_SEC_TYPE_WEP
:
3124 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3125 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3126 RX_RES_STATUS_DECRYPT_OK
) {
3127 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3128 stats
->flag
|= RX_FLAG_DECRYPTED
;
3137 void iwl_handle_data_packet_monitor(struct iwl_priv
*priv
,
3138 struct iwl_rx_mem_buffer
*rxb
,
3139 void *data
, short len
,
3140 struct ieee80211_rx_status
*stats
,
3143 struct iwl_rt_rx_hdr
*iwl_rt
;
3145 /* First cache any information we need before we overwrite
3146 * the information provided in the skb from the hardware */
3147 s8 signal
= stats
->ssi
;
3149 int rate
= stats
->rate
;
3150 u64 tsf
= stats
->mactime
;
3151 __le16 phy_flags_hw
= cpu_to_le16(phy_flags
);
3153 /* We received data from the HW, so stop the watchdog */
3154 if (len
> IWL_RX_BUF_SIZE
- sizeof(*iwl_rt
)) {
3155 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3159 /* copy the frame data to write after where the radiotap header goes */
3160 iwl_rt
= (void *)rxb
->skb
->data
;
3161 memmove(iwl_rt
->payload
, data
, len
);
3163 iwl_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3164 iwl_rt
->rt_hdr
.it_pad
= 0; /* always good to zero */
3166 /* total header + data */
3167 iwl_rt
->rt_hdr
.it_len
= cpu_to_le16(sizeof(*iwl_rt
));
3169 /* Set the size of the skb to the size of the frame */
3170 skb_put(rxb
->skb
, sizeof(*iwl_rt
) + len
);
3172 /* Big bitfield of all the fields we provide in radiotap */
3173 iwl_rt
->rt_hdr
.it_present
=
3174 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3175 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3176 (1 << IEEE80211_RADIOTAP_RATE
) |
3177 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3178 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3179 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3180 (1 << IEEE80211_RADIOTAP_ANTENNA
));
3182 /* Zero the flags, we'll add to them as we go */
3183 iwl_rt
->rt_flags
= 0;
3185 iwl_rt
->rt_tsf
= cpu_to_le64(tsf
);
3187 /* Convert to dBm */
3188 iwl_rt
->rt_dbmsignal
= signal
;
3189 iwl_rt
->rt_dbmnoise
= noise
;
3191 /* Convert the channel frequency and set the flags */
3192 iwl_rt
->rt_channelMHz
= cpu_to_le16(stats
->freq
);
3193 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3194 iwl_rt
->rt_chbitmask
=
3195 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_5GHZ
));
3196 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3197 iwl_rt
->rt_chbitmask
=
3198 cpu_to_le16((IEEE80211_CHAN_CCK
| IEEE80211_CHAN_2GHZ
));
3200 iwl_rt
->rt_chbitmask
=
3201 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_2GHZ
));
3203 rate
= iwl_rate_index_from_plcp(rate
);
3205 iwl_rt
->rt_rate
= 0;
3207 iwl_rt
->rt_rate
= iwl_rates
[rate
].ieee
;
3209 /* antenna number */
3210 iwl_rt
->rt_antenna
=
3211 le16_to_cpu(phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
3213 /* set the preamble flag if we have it */
3214 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3215 iwl_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3217 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb
->skb
->len
);
3219 stats
->flag
|= RX_FLAG_RADIOTAP
;
3220 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3225 #define IWL_PACKET_RETRY_TIME HZ
3227 int is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
3229 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
3230 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
3231 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
3232 u16
*last_seq
, *last_frag
;
3233 unsigned long *last_time
;
3235 switch (priv
->iw_mode
) {
3236 case IEEE80211_IF_TYPE_IBSS
:{
3237 struct list_head
*p
;
3238 struct iwl_ibss_seq
*entry
= NULL
;
3239 u8
*mac
= header
->addr2
;
3240 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
3242 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
3244 list_entry(p
, struct iwl_ibss_seq
, list
);
3245 if (!compare_ether_addr(entry
->mac
, mac
))
3248 if (p
== &priv
->ibss_mac_hash
[index
]) {
3249 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
3252 ("Cannot malloc new mac entry\n");
3255 memcpy(entry
->mac
, mac
, ETH_ALEN
);
3256 entry
->seq_num
= seq
;
3257 entry
->frag_num
= frag
;
3258 entry
->packet_time
= jiffies
;
3259 list_add(&entry
->list
,
3260 &priv
->ibss_mac_hash
[index
]);
3263 last_seq
= &entry
->seq_num
;
3264 last_frag
= &entry
->frag_num
;
3265 last_time
= &entry
->packet_time
;
3268 case IEEE80211_IF_TYPE_STA
:
3269 last_seq
= &priv
->last_seq_num
;
3270 last_frag
= &priv
->last_frag_num
;
3271 last_time
= &priv
->last_packet_time
;
3276 if ((*last_seq
== seq
) &&
3277 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
3278 if (*last_frag
== frag
)
3280 if (*last_frag
+ 1 != frag
)
3281 /* out-of-order fragment */
3287 *last_time
= jiffies
;
3294 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3296 #include "iwl-spectrum.h"
3298 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3299 #define BEACON_TIME_MASK_HIGH 0xFF000000
3300 #define TIME_UNIT 1024
3303 * extended beacon time format
3304 * time in usec will be changed into a 32-bit value in 8:24 format
3305 * the high 1 byte is the beacon counts
3306 * the lower 3 bytes is the time in usec within one beacon interval
3309 static u32
iwl_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
3313 u32 interval
= beacon_interval
* 1024;
3315 if (!interval
|| !usec
)
3318 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
3319 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
3321 return (quot
<< 24) + rem
;
3324 /* base is usually what we get from ucode with each received frame,
3325 * the same as HW timer counter counting down
3328 static __le32
iwl_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
3330 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
3331 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
3332 u32 interval
= beacon_interval
* TIME_UNIT
;
3333 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
3334 (addon
& BEACON_TIME_MASK_HIGH
);
3336 if (base_low
> addon_low
)
3337 res
+= base_low
- addon_low
;
3338 else if (base_low
< addon_low
) {
3339 res
+= interval
+ base_low
- addon_low
;
3344 return cpu_to_le32(res
);
3347 static int iwl_get_measurement(struct iwl_priv
*priv
,
3348 struct ieee80211_measurement_params
*params
,
3351 struct iwl_spectrum_cmd spectrum
;
3352 struct iwl_rx_packet
*res
;
3353 struct iwl_host_cmd cmd
= {
3354 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
3355 .data
= (void *)&spectrum
,
3356 .meta
.flags
= CMD_WANT_SKB
,
3358 u32 add_time
= le64_to_cpu(params
->start_time
);
3360 int spectrum_resp_status
;
3361 int duration
= le16_to_cpu(params
->duration
);
3363 if (iwl_is_associated(priv
))
3365 iwl_usecs_to_beacons(
3366 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
3367 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3369 memset(&spectrum
, 0, sizeof(spectrum
));
3371 spectrum
.channel_count
= cpu_to_le16(1);
3373 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
3374 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
3375 cmd
.len
= sizeof(spectrum
);
3376 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
3378 if (iwl_is_associated(priv
))
3379 spectrum
.start_time
=
3380 iwl_add_beacon_time(priv
->last_beacon_time
,
3382 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3384 spectrum
.start_time
= 0;
3386 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
3387 spectrum
.channels
[0].channel
= params
->channel
;
3388 spectrum
.channels
[0].type
= type
;
3389 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
3390 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
3391 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
3393 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3397 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
3398 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
3399 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3403 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
3404 switch (spectrum_resp_status
) {
3405 case 0: /* Command will be handled */
3406 if (res
->u
.spectrum
.id
!= 0xff) {
3408 ("Replaced existing measurement: %d\n",
3409 res
->u
.spectrum
.id
);
3410 priv
->measurement_status
&= ~MEASUREMENT_READY
;
3412 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
3416 case 1: /* Command will not be handled */
3421 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
3427 static void iwl_txstatus_to_ieee(struct iwl_priv
*priv
,
3428 struct iwl_tx_info
*tx_sta
)
3431 tx_sta
->status
.ack_signal
= 0;
3432 tx_sta
->status
.excessive_retries
= 0;
3433 tx_sta
->status
.queue_length
= 0;
3434 tx_sta
->status
.queue_number
= 0;
3437 ieee80211_tx_status_irqsafe(priv
->hw
,
3438 tx_sta
->skb
[0], &(tx_sta
->status
));
3440 ieee80211_tx_status(priv
->hw
,
3441 tx_sta
->skb
[0], &(tx_sta
->status
));
3443 tx_sta
->skb
[0] = NULL
;
3447 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3449 * When FW advances 'R' index, all entries between old and
3450 * new 'R' index need to be reclaimed. As result, some free space
3451 * forms. If there is enough free space (> low mark), wake Tx queue.
3453 int iwl_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
3455 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3456 struct iwl_queue
*q
= &txq
->q
;
3459 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
3460 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3461 "is out of range [0-%d] %d %d.\n", txq_id
,
3462 index
, q
->n_bd
, q
->first_empty
, q
->last_used
);
3466 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
3467 q
->last_used
!= index
;
3468 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
)) {
3469 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
3470 iwl_txstatus_to_ieee(priv
,
3471 &(txq
->txb
[txq
->q
.last_used
]));
3472 iwl_hw_txq_free_tfd(priv
, txq
);
3473 } else if (nfreed
> 1) {
3474 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
3475 q
->first_empty
, q
->last_used
);
3476 queue_work(priv
->workqueue
, &priv
->restart
);
3481 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
3482 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
3483 priv
->mac80211_registered
)
3484 ieee80211_wake_queue(priv
->hw
, txq_id
);
3490 static int iwl_is_tx_success(u32 status
)
3492 status
&= TX_STATUS_MSK
;
3493 return (status
== TX_STATUS_SUCCESS
)
3494 || (status
== TX_STATUS_DIRECT_DONE
);
3497 /******************************************************************************
3499 * Generic RX handler implementations
3501 ******************************************************************************/
3502 #ifdef CONFIG_IWLWIFI_HT
3503 #ifdef CONFIG_IWLWIFI_HT_AGG
3505 static inline int iwl_get_ra_sta_id(struct iwl_priv
*priv
,
3506 struct ieee80211_hdr
*hdr
)
3508 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
3511 u8
*da
= ieee80211_get_DA(hdr
);
3512 return iwl_hw_find_station(priv
, da
);
3516 static struct ieee80211_hdr
*iwl_tx_queue_get_hdr(
3517 struct iwl_priv
*priv
, int txq_id
, int idx
)
3519 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
3520 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
3521 txb
[idx
].skb
[0]->data
;
3525 static inline u32
iwl_get_scd_ssn(struct iwl_tx_resp
*tx_resp
)
3527 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
3528 tx_resp
->frame_count
);
3529 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
3532 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
3533 struct iwl_ht_agg
*agg
,
3534 struct iwl_tx_resp
*tx_resp
,
3538 __le32
*frame_status
= &tx_resp
->status
;
3539 struct ieee80211_tx_status
*tx_status
= NULL
;
3540 struct ieee80211_hdr
*hdr
= NULL
;
3545 if (agg
->wait_for_ba
)
3546 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3548 agg
->frame_count
= tx_resp
->frame_count
;
3549 agg
->start_idx
= start_idx
;
3550 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3551 agg
->bitmap0
= agg
->bitmap1
= 0;
3553 if (agg
->frame_count
== 1) {
3554 struct iwl_tx_queue
*txq
;
3555 status
= le32_to_cpu(frame_status
[0]);
3557 txq_id
= agg
->txq_id
;
3558 txq
= &priv
->txq
[txq_id
];
3559 /* FIXME: code repetition */
3560 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3561 agg
->frame_count
, agg
->start_idx
);
3563 tx_status
= &(priv
->txq
[txq_id
].txb
[txq
->q
.last_used
].status
);
3564 tx_status
->retry_count
= tx_resp
->failure_frame
;
3565 tx_status
->queue_number
= status
& 0xff;
3566 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3567 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3569 tx_status
->flags
= iwl_is_tx_success(status
)?
3570 IEEE80211_TX_STATUS_ACK
: 0;
3571 tx_status
->control
.tx_rate
=
3572 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3573 /* FIXME: code repetition end */
3575 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3576 status
& 0xff, tx_resp
->failure_frame
);
3577 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3578 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
3580 agg
->wait_for_ba
= 0;
3583 int start
= agg
->start_idx
;
3585 for (i
= 0; i
< agg
->frame_count
; i
++) {
3587 status
= le32_to_cpu(frame_status
[i
]);
3589 idx
= SEQ_TO_INDEX(seq
);
3590 txq_id
= SEQ_TO_QUEUE(seq
);
3592 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
3593 AGG_TX_STATE_ABORT_MSK
))
3596 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3597 agg
->frame_count
, txq_id
, idx
);
3599 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
3601 sc
= le16_to_cpu(hdr
->seq_ctrl
);
3602 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
3603 IWL_ERROR("BUG_ON idx doesn't match seq control"
3604 " idx=%d, seq_idx=%d, seq=%d\n",
3610 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3611 i
, idx
, SEQ_TO_SN(sc
));
3615 sh
= (start
- idx
) + 0xff;
3616 bitmap
= bitmap
<< sh
;
3619 } else if (sh
< -64)
3620 sh
= 0xff - (start
- idx
);
3624 bitmap
= bitmap
<< sh
;
3627 bitmap
|= (1 << sh
);
3628 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3629 start
, (u32
)(bitmap
& 0xFFFFFFFF));
3632 agg
->bitmap0
= bitmap
& 0xFFFFFFFF;
3633 agg
->bitmap1
= bitmap
>> 32;
3634 agg
->start_idx
= start
;
3635 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3636 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3637 agg
->frame_count
, agg
->start_idx
,
3641 agg
->wait_for_ba
= 1;
3648 static void iwl_rx_reply_tx(struct iwl_priv
*priv
,
3649 struct iwl_rx_mem_buffer
*rxb
)
3651 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3652 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3653 int txq_id
= SEQ_TO_QUEUE(sequence
);
3654 int index
= SEQ_TO_INDEX(sequence
);
3655 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3656 struct ieee80211_tx_status
*tx_status
;
3657 struct iwl_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3658 u32 status
= le32_to_cpu(tx_resp
->status
);
3659 #ifdef CONFIG_IWLWIFI_HT
3660 #ifdef CONFIG_IWLWIFI_HT_AGG
3665 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3666 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3667 "is out of range [0-%d] %d %d\n", txq_id
,
3668 index
, txq
->q
.n_bd
, txq
->q
.first_empty
,
3673 #ifdef CONFIG_IWLWIFI_HT
3674 #ifdef CONFIG_IWLWIFI_HT_AGG
3675 if (txq
->sched_retry
) {
3676 const u32 scd_ssn
= iwl_get_scd_ssn(tx_resp
);
3677 struct ieee80211_hdr
*hdr
=
3678 iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
3679 struct iwl_ht_agg
*agg
= NULL
;
3680 __le16
*qc
= ieee80211_get_qos_ctrl(hdr
);
3683 IWL_ERROR("BUG_ON qc is null!!!!\n");
3687 tid
= le16_to_cpu(*qc
) & 0xf;
3689 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
3690 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
3691 IWL_ERROR("Station not known for\n");
3695 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
3697 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, index
);
3699 if ((tx_resp
->frame_count
== 1) &&
3700 !iwl_is_tx_success(status
)) {
3701 /* TODO: send BAR */
3704 if ((txq
->q
.last_used
!= (scd_ssn
& 0xff))) {
3705 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
3706 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3707 "%d index %d\n", scd_ssn
, index
);
3708 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3711 #endif /* CONFIG_IWLWIFI_HT_AGG */
3712 #endif /* CONFIG_IWLWIFI_HT */
3713 tx_status
= &(txq
->txb
[txq
->q
.last_used
].status
);
3715 tx_status
->retry_count
= tx_resp
->failure_frame
;
3716 tx_status
->queue_number
= status
;
3717 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3718 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3721 iwl_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3723 tx_status
->control
.tx_rate
=
3724 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3726 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3727 "retries %d\n", txq_id
, iwl_get_tx_fail_reason(status
),
3728 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
3729 tx_resp
->failure_frame
);
3731 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3733 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3734 #ifdef CONFIG_IWLWIFI_HT
3735 #ifdef CONFIG_IWLWIFI_HT_AGG
3737 #endif /* CONFIG_IWLWIFI_HT_AGG */
3738 #endif /* CONFIG_IWLWIFI_HT */
3740 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3741 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3745 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
3746 struct iwl_rx_mem_buffer
*rxb
)
3748 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3749 struct iwl_alive_resp
*palive
;
3750 struct delayed_work
*pwork
;
3752 palive
= &pkt
->u
.alive_frame
;
3754 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3756 palive
->is_valid
, palive
->ver_type
,
3757 palive
->ver_subtype
);
3759 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3760 IWL_DEBUG_INFO("Initialization Alive received.\n");
3761 memcpy(&priv
->card_alive_init
,
3762 &pkt
->u
.alive_frame
,
3763 sizeof(struct iwl_init_alive_resp
));
3764 pwork
= &priv
->init_alive_start
;
3766 IWL_DEBUG_INFO("Runtime Alive received.\n");
3767 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3768 sizeof(struct iwl_alive_resp
));
3769 pwork
= &priv
->alive_start
;
3772 /* We delay the ALIVE response by 5ms to
3773 * give the HW RF Kill time to activate... */
3774 if (palive
->is_valid
== UCODE_VALID_OK
)
3775 queue_delayed_work(priv
->workqueue
, pwork
,
3776 msecs_to_jiffies(5));
3778 IWL_WARNING("uCode did not respond OK.\n");
3781 static void iwl_rx_reply_add_sta(struct iwl_priv
*priv
,
3782 struct iwl_rx_mem_buffer
*rxb
)
3784 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3786 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3790 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
3791 struct iwl_rx_mem_buffer
*rxb
)
3793 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3795 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3796 "seq 0x%04X ser 0x%08X\n",
3797 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3798 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3799 pkt
->u
.err_resp
.cmd_id
,
3800 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3801 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3804 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3806 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3808 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3809 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3810 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3811 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3812 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3813 rxon
->channel
= csa
->channel
;
3814 priv
->staging_rxon
.channel
= csa
->channel
;
3817 static void iwl_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3818 struct iwl_rx_mem_buffer
*rxb
)
3820 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3821 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3822 struct iwl_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3824 if (!report
->state
) {
3825 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3826 "Spectrum Measure Notification: Start\n");
3830 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3831 priv
->measurement_status
|= MEASUREMENT_READY
;
3835 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3836 struct iwl_rx_mem_buffer
*rxb
)
3838 #ifdef CONFIG_IWLWIFI_DEBUG
3839 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3840 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3841 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3842 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3846 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3847 struct iwl_rx_mem_buffer
*rxb
)
3849 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3850 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3851 "notification for %s:\n",
3852 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3853 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3856 static void iwl_bg_beacon_update(struct work_struct
*work
)
3858 struct iwl_priv
*priv
=
3859 container_of(work
, struct iwl_priv
, beacon_update
);
3860 struct sk_buff
*beacon
;
3862 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3863 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->interface_id
, NULL
);
3866 IWL_ERROR("update beacon failed\n");
3870 mutex_lock(&priv
->mutex
);
3871 /* new beacon skb is allocated every time; dispose previous.*/
3872 if (priv
->ibss_beacon
)
3873 dev_kfree_skb(priv
->ibss_beacon
);
3875 priv
->ibss_beacon
= beacon
;
3876 mutex_unlock(&priv
->mutex
);
3878 iwl_send_beacon_cmd(priv
);
3881 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
3882 struct iwl_rx_mem_buffer
*rxb
)
3884 #ifdef CONFIG_IWLWIFI_DEBUG
3885 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3886 struct iwl_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3887 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3889 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3890 "tsf %d %d rate %d\n",
3891 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3892 beacon
->beacon_notify_hdr
.failure_frame
,
3893 le32_to_cpu(beacon
->ibss_mgr_status
),
3894 le32_to_cpu(beacon
->high_tsf
),
3895 le32_to_cpu(beacon
->low_tsf
), rate
);
3898 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3899 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3900 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3903 /* Service response to REPLY_SCAN_CMD (0x80) */
3904 static void iwl_rx_reply_scan(struct iwl_priv
*priv
,
3905 struct iwl_rx_mem_buffer
*rxb
)
3907 #ifdef CONFIG_IWLWIFI_DEBUG
3908 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3909 struct iwl_scanreq_notification
*notif
=
3910 (struct iwl_scanreq_notification
*)pkt
->u
.raw
;
3912 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3916 /* Service SCAN_START_NOTIFICATION (0x82) */
3917 static void iwl_rx_scan_start_notif(struct iwl_priv
*priv
,
3918 struct iwl_rx_mem_buffer
*rxb
)
3920 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3921 struct iwl_scanstart_notification
*notif
=
3922 (struct iwl_scanstart_notification
*)pkt
->u
.raw
;
3923 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3924 IWL_DEBUG_SCAN("Scan start: "
3926 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3928 notif
->band
? "bg" : "a",
3930 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3933 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3934 static void iwl_rx_scan_results_notif(struct iwl_priv
*priv
,
3935 struct iwl_rx_mem_buffer
*rxb
)
3937 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3938 struct iwl_scanresults_notification
*notif
=
3939 (struct iwl_scanresults_notification
*)pkt
->u
.raw
;
3941 IWL_DEBUG_SCAN("Scan ch.res: "
3943 "(TSF: 0x%08X:%08X) - %d "
3944 "elapsed=%lu usec (%dms since last)\n",
3946 notif
->band
? "bg" : "a",
3947 le32_to_cpu(notif
->tsf_high
),
3948 le32_to_cpu(notif
->tsf_low
),
3949 le32_to_cpu(notif
->statistics
[0]),
3950 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3951 jiffies_to_msecs(elapsed_jiffies
3952 (priv
->last_scan_jiffies
, jiffies
)));
3954 priv
->last_scan_jiffies
= jiffies
;
3957 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3958 static void iwl_rx_scan_complete_notif(struct iwl_priv
*priv
,
3959 struct iwl_rx_mem_buffer
*rxb
)
3961 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3962 struct iwl_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3964 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3965 scan_notif
->scanned_channels
,
3966 scan_notif
->tsf_low
,
3967 scan_notif
->tsf_high
, scan_notif
->status
);
3969 /* The HW is no longer scanning */
3970 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3972 /* The scan completion notification came in, so kill that timer... */
3973 cancel_delayed_work(&priv
->scan_check
);
3975 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3976 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3977 jiffies_to_msecs(elapsed_jiffies
3978 (priv
->scan_pass_start
, jiffies
)));
3980 /* Remove this scanned band from the list
3981 * of pending bands to scan */
3984 /* If a request to abort was given, or the scan did not succeed
3985 * then we reset the scan state machine and terminate,
3986 * re-queuing another scan if one has been requested */
3987 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3988 IWL_DEBUG_INFO("Aborted scan completed.\n");
3989 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3991 /* If there are more bands on this scan pass reschedule */
3992 if (priv
->scan_bands
> 0)
3996 priv
->last_scan_jiffies
= jiffies
;
3997 IWL_DEBUG_INFO("Setting scan to off\n");
3999 clear_bit(STATUS_SCANNING
, &priv
->status
);
4001 IWL_DEBUG_INFO("Scan took %dms\n",
4002 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
4004 queue_work(priv
->workqueue
, &priv
->scan_completed
);
4009 priv
->scan_pass_start
= jiffies
;
4010 queue_work(priv
->workqueue
, &priv
->request_scan
);
4013 /* Handle notification from uCode that card's power state is changing
4014 * due to software, hardware, or critical temperature RFKILL */
4015 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
4016 struct iwl_rx_mem_buffer
*rxb
)
4018 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4019 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
4020 unsigned long status
= priv
->status
;
4022 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4023 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
4024 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
4026 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
4027 RF_CARD_DISABLED
)) {
4029 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4030 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4032 if (!iwl_grab_restricted_access(priv
)) {
4033 iwl_write_restricted(
4034 priv
, HBUS_TARG_MBX_C
,
4035 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4037 iwl_release_restricted_access(priv
);
4040 if (!(flags
& RXON_CARD_DISABLED
)) {
4041 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
4042 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4043 if (!iwl_grab_restricted_access(priv
)) {
4044 iwl_write_restricted(
4045 priv
, HBUS_TARG_MBX_C
,
4046 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4048 iwl_release_restricted_access(priv
);
4052 if (flags
& RF_CARD_DISABLED
) {
4053 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4054 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
4055 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4056 if (!iwl_grab_restricted_access(priv
))
4057 iwl_release_restricted_access(priv
);
4061 if (flags
& HW_CARD_DISABLED
)
4062 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4064 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4067 if (flags
& SW_CARD_DISABLED
)
4068 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4070 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4072 if (!(flags
& RXON_CARD_DISABLED
))
4073 iwl_scan_cancel(priv
);
4075 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
4076 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
4077 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
4078 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
4079 queue_work(priv
->workqueue
, &priv
->rf_kill
);
4081 wake_up_interruptible(&priv
->wait_command_queue
);
4085 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4087 * Setup the RX handlers for each of the reply types sent from the uCode
4090 * This function chains into the hardware specific files for them to setup
4091 * any hardware specific handlers as well.
4093 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
4095 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
4096 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl_rx_reply_add_sta
;
4097 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
4098 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
4099 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
4100 iwl_rx_spectrum_measure_notif
;
4101 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
4102 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
4103 iwl_rx_pm_debug_statistics_notif
;
4104 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
4106 /* NOTE: iwl_rx_statistics is different based on whether
4107 * the build is for the 3945 or the 4965. See the
4108 * corresponding implementation in iwl-XXXX.c
4110 * The same handler is used for both the REPLY to a
4111 * discrete statistics request from the host as well as
4112 * for the periodic statistics notification from the uCode
4114 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_hw_rx_statistics
;
4115 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_hw_rx_statistics
;
4117 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl_rx_reply_scan
;
4118 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl_rx_scan_start_notif
;
4119 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
4120 iwl_rx_scan_results_notif
;
4121 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
4122 iwl_rx_scan_complete_notif
;
4123 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
4124 priv
->rx_handlers
[REPLY_TX
] = iwl_rx_reply_tx
;
4126 /* Setup hardware specific Rx handlers */
4127 iwl_hw_rx_handler_setup(priv
);
4131 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4132 * @rxb: Rx buffer to reclaim
4134 * If an Rx buffer has an async callback associated with it the callback
4135 * will be executed. The attached skb (if present) will only be freed
4136 * if the callback returns 1
4138 static void iwl_tx_cmd_complete(struct iwl_priv
*priv
,
4139 struct iwl_rx_mem_buffer
*rxb
)
4141 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4142 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
4143 int txq_id
= SEQ_TO_QUEUE(sequence
);
4144 int index
= SEQ_TO_INDEX(sequence
);
4145 int huge
= sequence
& SEQ_HUGE_FRAME
;
4147 struct iwl_cmd
*cmd
;
4149 /* If a Tx command is being handled and it isn't in the actual
4150 * command queue then there a command routing bug has been introduced
4151 * in the queue management code. */
4152 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
4153 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4154 txq_id
, pkt
->hdr
.cmd
);
4155 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
4157 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
4158 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
4160 /* Input error checking is done when commands are added to queue. */
4161 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
4162 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
4164 } else if (cmd
->meta
.u
.callback
&&
4165 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
4168 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
4170 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
4171 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4172 wake_up_interruptible(&priv
->wait_command_queue
);
4176 /************************** RX-FUNCTIONS ****************************/
4178 * Rx theory of operation
4180 * The host allocates 32 DMA target addresses and passes the host address
4181 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4185 * The host/firmware share two index registers for managing the Rx buffers.
4187 * The READ index maps to the first position that the firmware may be writing
4188 * to -- the driver can read up to (but not including) this position and get
4190 * The READ index is managed by the firmware once the card is enabled.
4192 * The WRITE index maps to the last position the driver has read from -- the
4193 * position preceding WRITE is the last slot the firmware can place a packet.
4195 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4198 * During initialization the host sets up the READ queue position to the first
4199 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4201 * When the firmware places a packet in a buffer it will advance the READ index
4202 * and fire the RX interrupt. The driver can then query the READ index and
4203 * process as many packets as possible, moving the WRITE index forward as it
4204 * resets the Rx queue buffers with new memory.
4206 * The management in the driver is as follows:
4207 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4208 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4209 * to replensish the iwl->rxq->rx_free.
4210 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4211 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4212 * 'processed' and 'read' driver indexes as well)
4213 * + A received packet is processed and handed to the kernel network stack,
4214 * detached from the iwl->rxq. The driver 'processed' index is updated.
4215 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4216 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4217 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4218 * were enough free buffers and RX_STALLED is set it is cleared.
4223 * iwl_rx_queue_alloc() Allocates rx_free
4224 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4225 * iwl_rx_queue_restock
4226 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4227 * queue, updates firmware pointers, and updates
4228 * the WRITE index. If insufficient rx_free buffers
4229 * are available, schedules iwl_rx_replenish
4231 * -- enable interrupts --
4232 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4233 * READ INDEX, detaching the SKB from the pool.
4234 * Moves the packet buffer from queue to rx_used.
4235 * Calls iwl_rx_queue_restock to refill any empty
4242 * iwl_rx_queue_space - Return number of free slots available in queue.
4244 static int iwl_rx_queue_space(const struct iwl_rx_queue
*q
)
4246 int s
= q
->read
- q
->write
;
4249 /* keep some buffer to not confuse full and empty queue */
4257 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4259 * NOTE: This function has 3945 and 4965 specific code sections
4260 * but is declared in base due to the majority of the
4261 * implementation being the same (only a numeric constant is
4265 int iwl_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl_rx_queue
*q
)
4269 unsigned long flags
;
4271 spin_lock_irqsave(&q
->lock
, flags
);
4273 if (q
->need_update
== 0)
4276 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4277 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4279 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4280 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4281 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4285 rc
= iwl_grab_restricted_access(priv
);
4289 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_WPTR
,
4291 iwl_release_restricted_access(priv
);
4293 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
4299 spin_unlock_irqrestore(&q
->lock
, flags
);
4304 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4306 * NOTE: This function has 3945 and 4965 specific code paths in it.
4308 static inline __le32
iwl_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
4309 dma_addr_t dma_addr
)
4311 return cpu_to_le32((u32
)(dma_addr
>> 8));
4316 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4318 * If there are slots in the RX queue that need to be restocked,
4319 * and we have free pre-allocated buffers, fill the ranks as much
4320 * as we can pulling from rx_free.
4322 * This moves the 'write' index forward to catch up with 'processed', and
4323 * also updates the memory address in the firmware to reference the new
4326 int iwl_rx_queue_restock(struct iwl_priv
*priv
)
4328 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4329 struct list_head
*element
;
4330 struct iwl_rx_mem_buffer
*rxb
;
4331 unsigned long flags
;
4334 spin_lock_irqsave(&rxq
->lock
, flags
);
4335 write
= rxq
->write
& ~0x7;
4336 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
4337 element
= rxq
->rx_free
.next
;
4338 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4340 rxq
->bd
[rxq
->write
] = iwl_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
4341 rxq
->queue
[rxq
->write
] = rxb
;
4342 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
4345 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4346 /* If the pre-allocated buffer pool is dropping low, schedule to
4348 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
4349 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
4352 /* If we've added more space for the firmware to place data, tell it */
4353 if ((write
!= (rxq
->write
& ~0x7))
4354 || (abs(rxq
->write
- rxq
->read
) > 7)) {
4355 spin_lock_irqsave(&rxq
->lock
, flags
);
4356 rxq
->need_update
= 1;
4357 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4358 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
4367 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4369 * When moving to rx_free an SKB is allocated for the slot.
4371 * Also restock the Rx queue via iwl_rx_queue_restock.
4372 * This is called as a scheduled work item (except for during intialization)
4374 void iwl_rx_replenish(void *data
)
4376 struct iwl_priv
*priv
= data
;
4377 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4378 struct list_head
*element
;
4379 struct iwl_rx_mem_buffer
*rxb
;
4380 unsigned long flags
;
4381 spin_lock_irqsave(&rxq
->lock
, flags
);
4382 while (!list_empty(&rxq
->rx_used
)) {
4383 element
= rxq
->rx_used
.next
;
4384 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4386 alloc_skb(IWL_RX_BUF_SIZE
, __GFP_NOWARN
| GFP_ATOMIC
);
4388 if (net_ratelimit())
4389 printk(KERN_CRIT DRV_NAME
4390 ": Can not allocate SKB buffers\n");
4391 /* We don't reschedule replenish work here -- we will
4392 * call the restock method and if it still needs
4393 * more buffers it will schedule replenish */
4396 priv
->alloc_rxb_skb
++;
4399 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
4400 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4401 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
4404 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4406 spin_lock_irqsave(&priv
->lock
, flags
);
4407 iwl_rx_queue_restock(priv
);
4408 spin_unlock_irqrestore(&priv
->lock
, flags
);
4411 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4412 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4413 * This free routine walks the list of POOL entries and if SKB is set to
4414 * non NULL it is unmapped and freed
4416 void iwl_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4419 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
4420 if (rxq
->pool
[i
].skb
!= NULL
) {
4421 pci_unmap_single(priv
->pci_dev
,
4422 rxq
->pool
[i
].dma_addr
,
4423 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4424 dev_kfree_skb(rxq
->pool
[i
].skb
);
4428 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
4433 int iwl_rx_queue_alloc(struct iwl_priv
*priv
)
4435 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4436 struct pci_dev
*dev
= priv
->pci_dev
;
4439 spin_lock_init(&rxq
->lock
);
4440 INIT_LIST_HEAD(&rxq
->rx_free
);
4441 INIT_LIST_HEAD(&rxq
->rx_used
);
4442 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
4445 /* Fill the rx_used queue with _all_ of the Rx buffers */
4446 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
4447 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4448 /* Set us so that we have processed and used all buffers, but have
4449 * not restocked the Rx queue with fresh buffers */
4450 rxq
->read
= rxq
->write
= 0;
4451 rxq
->free_count
= 0;
4452 rxq
->need_update
= 0;
4456 void iwl_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4458 unsigned long flags
;
4460 spin_lock_irqsave(&rxq
->lock
, flags
);
4461 INIT_LIST_HEAD(&rxq
->rx_free
);
4462 INIT_LIST_HEAD(&rxq
->rx_used
);
4463 /* Fill the rx_used queue with _all_ of the Rx buffers */
4464 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
4465 /* In the reset function, these buffers may have been allocated
4466 * to an SKB, so we need to unmap and free potential storage */
4467 if (rxq
->pool
[i
].skb
!= NULL
) {
4468 pci_unmap_single(priv
->pci_dev
,
4469 rxq
->pool
[i
].dma_addr
,
4470 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4471 priv
->alloc_rxb_skb
--;
4472 dev_kfree_skb(rxq
->pool
[i
].skb
);
4473 rxq
->pool
[i
].skb
= NULL
;
4475 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4478 /* Set us so that we have processed and used all buffers, but have
4479 * not restocked the Rx queue with fresh buffers */
4480 rxq
->read
= rxq
->write
= 0;
4481 rxq
->free_count
= 0;
4482 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4485 /* Convert linear signal-to-noise ratio into dB */
4486 static u8 ratio2dB
[100] = {
4487 /* 0 1 2 3 4 5 6 7 8 9 */
4488 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4489 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4490 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4491 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4492 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4493 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4494 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4495 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4496 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4497 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4500 /* Calculates a relative dB value from a ratio of linear
4501 * (i.e. not dB) signal levels.
4502 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4503 int iwl_calc_db_from_ratio(int sig_ratio
)
4505 /* 1000:1 or higher just report as 60 dB */
4506 if (sig_ratio
>= 1000)
4509 /* 100:1 or higher, divide by 10 and use table,
4510 * add 20 dB to make up for divide by 10 */
4511 if (sig_ratio
>= 100)
4512 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4514 /* We shouldn't see this */
4518 /* Use table for ratios 1:1 - 99:1 */
4519 return (int)ratio2dB
[sig_ratio
];
4522 #define PERFECT_RSSI (-20) /* dBm */
4523 #define WORST_RSSI (-95) /* dBm */
4524 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4526 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4527 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4528 * about formulas used below. */
4529 int iwl_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4532 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4534 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4535 * as indicator; formula is (signal dbm - noise dbm).
4536 * SNR at or above 40 is a great signal (100%).
4537 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4538 * Weakest usable signal is usually 10 - 15 dB SNR. */
4540 if (rssi_dbm
- noise_dbm
>= 40)
4542 else if (rssi_dbm
< noise_dbm
)
4544 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4546 /* Else use just the signal level.
4547 * This formula is a least squares fit of data points collected and
4548 * compared with a reference system that had a percentage (%) display
4549 * for signal quality. */
4551 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4552 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4553 (RSSI_RANGE
* RSSI_RANGE
);
4557 else if (sig_qual
< 1)
4564 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4566 * Uses the priv->rx_handlers callback function array to invoke
4567 * the appropriate handlers, including command responses,
4568 * frame-received notifications, and other notifications.
4570 static void iwl_rx_handle(struct iwl_priv
*priv
)
4572 struct iwl_rx_mem_buffer
*rxb
;
4573 struct iwl_rx_packet
*pkt
;
4574 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4577 unsigned long flags
;
4579 r
= iwl_hw_get_rx_read(priv
);
4582 /* Rx interrupt, but nothing sent from uCode */
4584 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4587 rxb
= rxq
->queue
[i
];
4589 /* If an RXB doesn't have a queue slot associated with it
4590 * then a bug has been introduced in the queue refilling
4591 * routines -- catch it here */
4592 BUG_ON(rxb
== NULL
);
4594 rxq
->queue
[i
] = NULL
;
4596 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4598 PCI_DMA_FROMDEVICE
);
4599 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4601 /* Reclaim a command buffer only if this packet is a response
4602 * to a (driver-originated) command.
4603 * If the packet (e.g. Rx frame) originated from uCode,
4604 * there is no command buffer to reclaim.
4605 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4606 * but apparently a few don't get set; catch them here. */
4607 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4608 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
4609 (pkt
->hdr
.cmd
!= REPLY_4965_RX
) &&
4610 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
4611 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4612 (pkt
->hdr
.cmd
!= REPLY_TX
);
4614 /* Based on type of command response or notification,
4615 * handle those that need handling via function in
4616 * rx_handlers table. See iwl_setup_rx_handlers() */
4617 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4618 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4619 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4620 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4621 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4623 /* No handling needed */
4624 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4625 "r %d i %d No handler needed for %s, 0x%02x\n",
4626 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4631 /* Invoke any callbacks, transfer the skb to caller,
4632 * and fire off the (possibly) blocking iwl_send_cmd()
4633 * as we reclaim the driver command queue */
4634 if (rxb
&& rxb
->skb
)
4635 iwl_tx_cmd_complete(priv
, rxb
);
4637 IWL_WARNING("Claim null rxb?\n");
4640 /* For now we just don't re-use anything. We can tweak this
4641 * later to try and re-use notification packets and SKBs that
4642 * fail to Rx correctly */
4643 if (rxb
->skb
!= NULL
) {
4644 priv
->alloc_rxb_skb
--;
4645 dev_kfree_skb_any(rxb
->skb
);
4649 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4650 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4651 spin_lock_irqsave(&rxq
->lock
, flags
);
4652 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4653 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4654 i
= (i
+ 1) & RX_QUEUE_MASK
;
4657 /* Backtrack one entry */
4659 iwl_rx_queue_restock(priv
);
4662 int iwl_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4663 struct iwl_tx_queue
*txq
)
4667 int txq_id
= txq
->q
.id
;
4669 if (txq
->need_update
== 0)
4672 /* if we're trying to save power */
4673 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4674 /* wake up nic if it's powered down ...
4675 * uCode will wake up, and interrupt us again, so next
4676 * time we'll skip this part. */
4677 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4679 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4680 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4681 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4682 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4686 /* restore this queue's parameters in nic hardware. */
4687 rc
= iwl_grab_restricted_access(priv
);
4690 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
4691 txq
->q
.first_empty
| (txq_id
<< 8));
4692 iwl_release_restricted_access(priv
);
4694 /* else not in power-save mode, uCode will never sleep when we're
4695 * trying to tx (during RFKILL, we're not trying to tx). */
4697 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4698 txq
->q
.first_empty
| (txq_id
<< 8));
4700 txq
->need_update
= 0;
4705 #ifdef CONFIG_IWLWIFI_DEBUG
4706 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd
*rxon
)
4708 DECLARE_MAC_BUF(mac
);
4710 IWL_DEBUG_RADIO("RX CONFIG:\n");
4711 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4712 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4713 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4714 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4715 le32_to_cpu(rxon
->filter_flags
));
4716 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4717 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4718 rxon
->ofdm_basic_rates
);
4719 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4720 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4721 print_mac(mac
, rxon
->node_addr
));
4722 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4723 print_mac(mac
, rxon
->bssid_addr
));
4724 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4728 static void iwl_enable_interrupts(struct iwl_priv
*priv
)
4730 IWL_DEBUG_ISR("Enabling interrupts\n");
4731 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4732 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4735 static inline void iwl_disable_interrupts(struct iwl_priv
*priv
)
4737 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4739 /* disable interrupts from uCode/NIC to host */
4740 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4742 /* acknowledge/clear/reset any interrupts still pending
4743 * from uCode or flow handler (Rx/Tx DMA) */
4744 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4745 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4746 IWL_DEBUG_ISR("Disabled interrupts\n");
4749 static const char *desc_lookup(int i
)
4757 return "BAD_CHECKSUM";
4759 return "NMI_INTERRUPT";
4763 return "FATAL_ERROR";
4769 #define ERROR_START_OFFSET (1 * sizeof(u32))
4770 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4772 static void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
4775 u32 desc
, time
, count
, base
, data1
;
4776 u32 blink1
, blink2
, ilink1
, ilink2
;
4779 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4781 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4782 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4786 rc
= iwl_grab_restricted_access(priv
);
4788 IWL_WARNING("Can not read from adapter at this time.\n");
4792 count
= iwl_read_restricted_mem(priv
, base
);
4794 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4795 IWL_ERROR("Start IWL Error Log Dump:\n");
4796 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4797 priv
->status
, priv
->config
, count
);
4800 desc
= iwl_read_restricted_mem(priv
, base
+ 1 * sizeof(u32
));
4801 blink1
= iwl_read_restricted_mem(priv
, base
+ 3 * sizeof(u32
));
4802 blink2
= iwl_read_restricted_mem(priv
, base
+ 4 * sizeof(u32
));
4803 ilink1
= iwl_read_restricted_mem(priv
, base
+ 5 * sizeof(u32
));
4804 ilink2
= iwl_read_restricted_mem(priv
, base
+ 6 * sizeof(u32
));
4805 data1
= iwl_read_restricted_mem(priv
, base
+ 7 * sizeof(u32
));
4806 data2
= iwl_read_restricted_mem(priv
, base
+ 8 * sizeof(u32
));
4807 line
= iwl_read_restricted_mem(priv
, base
+ 9 * sizeof(u32
));
4808 time
= iwl_read_restricted_mem(priv
, base
+ 11 * sizeof(u32
));
4810 IWL_ERROR("Desc Time "
4811 "data1 data2 line\n");
4812 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4813 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
4814 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4815 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
4818 iwl_release_restricted_access(priv
);
4821 #define EVENT_START_OFFSET (4 * sizeof(u32))
4824 * iwl_print_event_log - Dump error event log to syslog
4826 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4828 static void iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4829 u32 num_events
, u32 mode
)
4832 u32 base
; /* SRAM byte address of event log header */
4833 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4834 u32 ptr
; /* SRAM byte address of log data */
4835 u32 ev
, time
, data
; /* event log data */
4837 if (num_events
== 0)
4840 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4843 event_size
= 2 * sizeof(u32
);
4845 event_size
= 3 * sizeof(u32
);
4847 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4849 /* "time" is actually "data" for mode 0 (no timestamp).
4850 * place event id # at far right for easier visual parsing. */
4851 for (i
= 0; i
< num_events
; i
++) {
4852 ev
= iwl_read_restricted_mem(priv
, ptr
);
4854 time
= iwl_read_restricted_mem(priv
, ptr
);
4857 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4859 data
= iwl_read_restricted_mem(priv
, ptr
);
4861 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4866 static void iwl_dump_nic_event_log(struct iwl_priv
*priv
)
4869 u32 base
; /* SRAM byte address of event log header */
4870 u32 capacity
; /* event log capacity in # entries */
4871 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4872 u32 num_wraps
; /* # times uCode wrapped to top of log */
4873 u32 next_entry
; /* index of next entry to be written by uCode */
4874 u32 size
; /* # entries that we'll print */
4876 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4877 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4878 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4882 rc
= iwl_grab_restricted_access(priv
);
4884 IWL_WARNING("Can not read from adapter at this time.\n");
4888 /* event log header */
4889 capacity
= iwl_read_restricted_mem(priv
, base
);
4890 mode
= iwl_read_restricted_mem(priv
, base
+ (1 * sizeof(u32
)));
4891 num_wraps
= iwl_read_restricted_mem(priv
, base
+ (2 * sizeof(u32
)));
4892 next_entry
= iwl_read_restricted_mem(priv
, base
+ (3 * sizeof(u32
)));
4894 size
= num_wraps
? capacity
: next_entry
;
4896 /* bail out if nothing in log */
4898 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4899 iwl_release_restricted_access(priv
);
4903 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4906 /* if uCode has wrapped back to top of log, start at the oldest entry,
4907 * i.e the next one that uCode would fill. */
4909 iwl_print_event_log(priv
, next_entry
,
4910 capacity
- next_entry
, mode
);
4912 /* (then/else) start at top of log */
4913 iwl_print_event_log(priv
, 0, next_entry
, mode
);
4915 iwl_release_restricted_access(priv
);
4919 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4921 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
4923 /* Set the FW error flag -- cleared on iwl_down */
4924 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4926 /* Cancel currently queued command. */
4927 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4929 #ifdef CONFIG_IWLWIFI_DEBUG
4930 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4931 iwl_dump_nic_error_log(priv
);
4932 iwl_dump_nic_event_log(priv
);
4933 iwl_print_rx_config_cmd(&priv
->staging_rxon
);
4937 wake_up_interruptible(&priv
->wait_command_queue
);
4939 /* Keep the restart process from trying to send host
4940 * commands by clearing the INIT status bit */
4941 clear_bit(STATUS_READY
, &priv
->status
);
4943 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4944 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4945 "Restarting adapter due to uCode error.\n");
4947 if (iwl_is_associated(priv
)) {
4948 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4949 sizeof(priv
->recovery_rxon
));
4950 priv
->error_recovering
= 1;
4952 queue_work(priv
->workqueue
, &priv
->restart
);
4956 static void iwl_error_recovery(struct iwl_priv
*priv
)
4958 unsigned long flags
;
4960 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4961 sizeof(priv
->staging_rxon
));
4962 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4963 iwl_commit_rxon(priv
);
4965 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
4967 spin_lock_irqsave(&priv
->lock
, flags
);
4968 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4969 priv
->error_recovering
= 0;
4970 spin_unlock_irqrestore(&priv
->lock
, flags
);
4973 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
4975 u32 inta
, handled
= 0;
4977 unsigned long flags
;
4978 #ifdef CONFIG_IWLWIFI_DEBUG
4982 spin_lock_irqsave(&priv
->lock
, flags
);
4984 /* Ack/clear/reset pending uCode interrupts.
4985 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4986 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4987 inta
= iwl_read32(priv
, CSR_INT
);
4988 iwl_write32(priv
, CSR_INT
, inta
);
4990 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4991 * Any new interrupts that happen after this, either while we're
4992 * in this tasklet, or later, will show up in next ISR/tasklet. */
4993 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4994 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4996 #ifdef CONFIG_IWLWIFI_DEBUG
4997 if (iwl_debug_level
& IWL_DL_ISR
) {
4998 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4999 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5000 inta
, inta_mask
, inta_fh
);
5004 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5005 * atomic, make sure that inta covers all the interrupts that
5006 * we've discovered, even if FH interrupt came in just after
5007 * reading CSR_INT. */
5008 if (inta_fh
& CSR_FH_INT_RX_MASK
)
5009 inta
|= CSR_INT_BIT_FH_RX
;
5010 if (inta_fh
& CSR_FH_INT_TX_MASK
)
5011 inta
|= CSR_INT_BIT_FH_TX
;
5013 /* Now service all interrupt bits discovered above. */
5014 if (inta
& CSR_INT_BIT_HW_ERR
) {
5015 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5017 /* Tell the device to stop sending interrupts */
5018 iwl_disable_interrupts(priv
);
5020 iwl_irq_handle_error(priv
);
5022 handled
|= CSR_INT_BIT_HW_ERR
;
5024 spin_unlock_irqrestore(&priv
->lock
, flags
);
5029 #ifdef CONFIG_IWLWIFI_DEBUG
5030 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5031 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5032 if (inta
& CSR_INT_BIT_MAC_CLK_ACTV
)
5033 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5035 /* Alive notification via Rx interrupt will do the real work */
5036 if (inta
& CSR_INT_BIT_ALIVE
)
5037 IWL_DEBUG_ISR("Alive interrupt\n");
5040 /* Safely ignore these bits for debug checks below */
5041 inta
&= ~(CSR_INT_BIT_MAC_CLK_ACTV
| CSR_INT_BIT_ALIVE
);
5043 /* HW RF KILL switch toggled (4965 only) */
5044 if (inta
& CSR_INT_BIT_RF_KILL
) {
5046 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
5047 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
5050 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
5051 "RF_KILL bit toggled to %s.\n",
5052 hw_rf_kill
? "disable radio":"enable radio");
5054 /* Queue restart only if RF_KILL switch was set to "kill"
5055 * when we loaded driver, and is now set to "enable".
5056 * After we're Alive, RF_KILL gets handled by
5057 * iwl_rx_card_state_notif() */
5058 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
))
5059 queue_work(priv
->workqueue
, &priv
->restart
);
5061 handled
|= CSR_INT_BIT_RF_KILL
;
5064 /* Chip got too hot and stopped itself (4965 only) */
5065 if (inta
& CSR_INT_BIT_CT_KILL
) {
5066 IWL_ERROR("Microcode CT kill error detected.\n");
5067 handled
|= CSR_INT_BIT_CT_KILL
;
5070 /* Error detected by uCode */
5071 if (inta
& CSR_INT_BIT_SW_ERR
) {
5072 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5074 iwl_irq_handle_error(priv
);
5075 handled
|= CSR_INT_BIT_SW_ERR
;
5078 /* uCode wakes up after power-down sleep */
5079 if (inta
& CSR_INT_BIT_WAKEUP
) {
5080 IWL_DEBUG_ISR("Wakeup interrupt\n");
5081 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
5082 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
5083 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
5084 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
5085 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
5086 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
5087 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
5089 handled
|= CSR_INT_BIT_WAKEUP
;
5092 /* All uCode command responses, including Tx command responses,
5093 * Rx "responses" (frame-received notification), and other
5094 * notifications from uCode come through here*/
5095 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
5096 iwl_rx_handle(priv
);
5097 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
5100 if (inta
& CSR_INT_BIT_FH_TX
) {
5101 IWL_DEBUG_ISR("Tx interrupt\n");
5102 handled
|= CSR_INT_BIT_FH_TX
;
5105 if (inta
& ~handled
)
5106 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
5108 if (inta
& ~CSR_INI_SET_MASK
) {
5109 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5110 inta
& ~CSR_INI_SET_MASK
);
5111 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
5114 /* Re-enable all interrupts */
5115 iwl_enable_interrupts(priv
);
5117 #ifdef CONFIG_IWLWIFI_DEBUG
5118 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5119 inta
= iwl_read32(priv
, CSR_INT
);
5120 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
5121 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5122 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5123 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
5126 spin_unlock_irqrestore(&priv
->lock
, flags
);
5129 static irqreturn_t
iwl_isr(int irq
, void *data
)
5131 struct iwl_priv
*priv
= data
;
5132 u32 inta
, inta_mask
;
5137 spin_lock(&priv
->lock
);
5139 /* Disable (but don't clear!) interrupts here to avoid
5140 * back-to-back ISRs and sporadic interrupts from our NIC.
5141 * If we have something to service, the tasklet will re-enable ints.
5142 * If we *don't* have something, we'll re-enable before leaving here. */
5143 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
5144 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
5146 /* Discover which interrupts are active/pending */
5147 inta
= iwl_read32(priv
, CSR_INT
);
5148 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5150 /* Ignore interrupt if there's nothing in NIC to service.
5151 * This may be due to IRQ shared with another device,
5152 * or due to sporadic interrupts thrown from our NIC. */
5153 if (!inta
&& !inta_fh
) {
5154 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5158 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
5159 /* Hardware disappeared */
5160 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
5164 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5165 inta
, inta_mask
, inta_fh
);
5167 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5168 tasklet_schedule(&priv
->irq_tasklet
);
5169 spin_unlock(&priv
->lock
);
5174 /* re-enable interrupts here since we don't have anything to service. */
5175 iwl_enable_interrupts(priv
);
5176 spin_unlock(&priv
->lock
);
5180 /************************** EEPROM BANDS ****************************
5182 * The iwl_eeprom_band definitions below provide the mapping from the
5183 * EEPROM contents to the specific channel number supported for each
5186 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5187 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5188 * The specific geography and calibration information for that channel
5189 * is contained in the eeprom map itself.
5191 * During init, we copy the eeprom information and channel map
5192 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5194 * channel_map_24/52 provides the index in the channel_info array for a
5195 * given channel. We have to have two separate maps as there is channel
5196 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5199 * A value of 0xff stored in the channel_map indicates that the channel
5200 * is not supported by the hardware at all.
5202 * A value of 0xfe in the channel_map indicates that the channel is not
5203 * valid for Tx with the current hardware. This means that
5204 * while the system can tune and receive on a given channel, it may not
5205 * be able to associate or transmit any frames on that
5206 * channel. There is no corresponding channel information for that
5209 *********************************************************************/
5212 static const u8 iwl_eeprom_band_1
[14] = {
5213 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5217 static const u8 iwl_eeprom_band_2
[] = {
5218 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5221 static const u8 iwl_eeprom_band_3
[] = { /* 5205-5320MHz */
5222 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5225 static const u8 iwl_eeprom_band_4
[] = { /* 5500-5700MHz */
5226 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5229 static const u8 iwl_eeprom_band_5
[] = { /* 5725-5825MHz */
5230 145, 149, 153, 157, 161, 165
5233 static u8 iwl_eeprom_band_6
[] = { /* 2.4 FAT channel */
5237 static u8 iwl_eeprom_band_7
[] = { /* 5.2 FAT channel */
5238 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5241 static void iwl_init_band_reference(const struct iwl_priv
*priv
, int band
,
5242 int *eeprom_ch_count
,
5243 const struct iwl_eeprom_channel
5245 const u8
**eeprom_ch_index
)
5248 case 1: /* 2.4GHz band */
5249 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_1
);
5250 *eeprom_ch_info
= priv
->eeprom
.band_1_channels
;
5251 *eeprom_ch_index
= iwl_eeprom_band_1
;
5253 case 2: /* 5.2GHz band */
5254 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_2
);
5255 *eeprom_ch_info
= priv
->eeprom
.band_2_channels
;
5256 *eeprom_ch_index
= iwl_eeprom_band_2
;
5258 case 3: /* 5.2GHz band */
5259 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_3
);
5260 *eeprom_ch_info
= priv
->eeprom
.band_3_channels
;
5261 *eeprom_ch_index
= iwl_eeprom_band_3
;
5263 case 4: /* 5.2GHz band */
5264 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_4
);
5265 *eeprom_ch_info
= priv
->eeprom
.band_4_channels
;
5266 *eeprom_ch_index
= iwl_eeprom_band_4
;
5268 case 5: /* 5.2GHz band */
5269 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_5
);
5270 *eeprom_ch_info
= priv
->eeprom
.band_5_channels
;
5271 *eeprom_ch_index
= iwl_eeprom_band_5
;
5274 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_6
);
5275 *eeprom_ch_info
= priv
->eeprom
.band_24_channels
;
5276 *eeprom_ch_index
= iwl_eeprom_band_6
;
5279 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_7
);
5280 *eeprom_ch_info
= priv
->eeprom
.band_52_channels
;
5281 *eeprom_ch_index
= iwl_eeprom_band_7
;
5289 const struct iwl_channel_info
*iwl_get_channel_info(const struct iwl_priv
*priv
,
5290 int phymode
, u16 channel
)
5295 case MODE_IEEE80211A
:
5296 for (i
= 14; i
< priv
->channel_count
; i
++) {
5297 if (priv
->channel_info
[i
].channel
== channel
)
5298 return &priv
->channel_info
[i
];
5302 case MODE_IEEE80211B
:
5303 case MODE_IEEE80211G
:
5304 if (channel
>= 1 && channel
<= 14)
5305 return &priv
->channel_info
[channel
- 1];
5313 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5316 static int iwl_init_channel_map(struct iwl_priv
*priv
)
5318 int eeprom_ch_count
= 0;
5319 const u8
*eeprom_ch_index
= NULL
;
5320 const struct iwl_eeprom_channel
*eeprom_ch_info
= NULL
;
5322 struct iwl_channel_info
*ch_info
;
5324 if (priv
->channel_count
) {
5325 IWL_DEBUG_INFO("Channel map already initialized.\n");
5329 if (priv
->eeprom
.version
< 0x2f) {
5330 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5331 priv
->eeprom
.version
);
5335 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5337 priv
->channel_count
=
5338 ARRAY_SIZE(iwl_eeprom_band_1
) +
5339 ARRAY_SIZE(iwl_eeprom_band_2
) +
5340 ARRAY_SIZE(iwl_eeprom_band_3
) +
5341 ARRAY_SIZE(iwl_eeprom_band_4
) +
5342 ARRAY_SIZE(iwl_eeprom_band_5
);
5344 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv
->channel_count
);
5346 priv
->channel_info
= kzalloc(sizeof(struct iwl_channel_info
) *
5347 priv
->channel_count
, GFP_KERNEL
);
5348 if (!priv
->channel_info
) {
5349 IWL_ERROR("Could not allocate channel_info\n");
5350 priv
->channel_count
= 0;
5354 ch_info
= priv
->channel_info
;
5356 /* Loop through the 5 EEPROM bands adding them in order to the
5357 * channel map we maintain (that contains additional information than
5358 * what just in the EEPROM) */
5359 for (band
= 1; band
<= 5; band
++) {
5361 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5362 &eeprom_ch_info
, &eeprom_ch_index
);
5364 /* Loop through each band adding each of the channels */
5365 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5366 ch_info
->channel
= eeprom_ch_index
[ch
];
5367 ch_info
->phymode
= (band
== 1) ? MODE_IEEE80211B
:
5370 /* permanently store EEPROM's channel regulatory flags
5371 * and max power in channel info database. */
5372 ch_info
->eeprom
= eeprom_ch_info
[ch
];
5374 /* Copy the run-time flags so they are there even on
5375 * invalid channels */
5376 ch_info
->flags
= eeprom_ch_info
[ch
].flags
;
5378 if (!(is_channel_valid(ch_info
))) {
5379 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5383 is_channel_a_band(ch_info
) ?
5389 /* Initialize regulatory-based run-time data */
5390 ch_info
->max_power_avg
= ch_info
->curr_txpow
=
5391 eeprom_ch_info
[ch
].max_power_avg
;
5392 ch_info
->scan_power
= eeprom_ch_info
[ch
].max_power_avg
;
5393 ch_info
->min_power
= 0;
5395 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5396 " %ddBm): Ad-Hoc %ssupported\n",
5398 is_channel_a_band(ch_info
) ?
5400 CHECK_AND_PRINT(IBSS
),
5401 CHECK_AND_PRINT(ACTIVE
),
5402 CHECK_AND_PRINT(RADAR
),
5403 CHECK_AND_PRINT(WIDE
),
5404 CHECK_AND_PRINT(NARROW
),
5405 CHECK_AND_PRINT(DFS
),
5406 eeprom_ch_info
[ch
].flags
,
5407 eeprom_ch_info
[ch
].max_power_avg
,
5408 ((eeprom_ch_info
[ch
].
5409 flags
& EEPROM_CHANNEL_IBSS
)
5410 && !(eeprom_ch_info
[ch
].
5411 flags
& EEPROM_CHANNEL_RADAR
))
5414 /* Set the user_txpower_limit to the highest power
5415 * supported by any channel */
5416 if (eeprom_ch_info
[ch
].max_power_avg
>
5417 priv
->user_txpower_limit
)
5418 priv
->user_txpower_limit
=
5419 eeprom_ch_info
[ch
].max_power_avg
;
5425 for (band
= 6; band
<= 7; band
++) {
5427 u8 fat_extension_chan
;
5429 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5430 &eeprom_ch_info
, &eeprom_ch_index
);
5432 phymode
= (band
== 6) ? MODE_IEEE80211B
: MODE_IEEE80211A
;
5433 /* Loop through each band adding each of the channels */
5434 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5437 ((eeprom_ch_index
[ch
] == 5) ||
5438 (eeprom_ch_index
[ch
] == 6) ||
5439 (eeprom_ch_index
[ch
] == 7)))
5440 fat_extension_chan
= HT_IE_EXT_CHANNEL_MAX
;
5442 fat_extension_chan
= HT_IE_EXT_CHANNEL_ABOVE
;
5444 iwl4965_set_fat_chan_info(priv
, phymode
,
5445 eeprom_ch_index
[ch
],
5446 &(eeprom_ch_info
[ch
]),
5447 fat_extension_chan
);
5449 iwl4965_set_fat_chan_info(priv
, phymode
,
5450 (eeprom_ch_index
[ch
] + 4),
5451 &(eeprom_ch_info
[ch
]),
5452 HT_IE_EXT_CHANNEL_BELOW
);
5459 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5460 * sending probe req. This should be set long enough to hear probe responses
5461 * from more than one AP. */
5462 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5463 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5465 /* For faster active scanning, scan will move to the next channel if fewer than
5466 * PLCP_QUIET_THRESH packets are heard on this channel within
5467 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5468 * time if it's a quiet channel (nothing responded to our probe, and there's
5469 * no other traffic).
5470 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5471 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5472 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5474 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5475 * Must be set longer than active dwell time.
5476 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5477 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5478 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5479 #define IWL_PASSIVE_DWELL_BASE (100)
5480 #define IWL_CHANNEL_TUNE_TIME 5
5482 static inline u16
iwl_get_active_dwell_time(struct iwl_priv
*priv
, int phymode
)
5484 if (phymode
== MODE_IEEE80211A
)
5485 return IWL_ACTIVE_DWELL_TIME_52
;
5487 return IWL_ACTIVE_DWELL_TIME_24
;
5490 static u16
iwl_get_passive_dwell_time(struct iwl_priv
*priv
, int phymode
)
5492 u16 active
= iwl_get_active_dwell_time(priv
, phymode
);
5493 u16 passive
= (phymode
!= MODE_IEEE80211A
) ?
5494 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
5495 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
5497 if (iwl_is_associated(priv
)) {
5498 /* If we're associated, we clamp the maximum passive
5499 * dwell time to be 98% of the beacon interval (minus
5500 * 2 * channel tune time) */
5501 passive
= priv
->beacon_int
;
5502 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
5503 passive
= IWL_PASSIVE_DWELL_BASE
;
5504 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
5507 if (passive
<= active
)
5508 passive
= active
+ 1;
5513 static int iwl_get_channels_for_scan(struct iwl_priv
*priv
, int phymode
,
5514 u8 is_active
, u8 direct_mask
,
5515 struct iwl_scan_channel
*scan_ch
)
5517 const struct ieee80211_channel
*channels
= NULL
;
5518 const struct ieee80211_hw_mode
*hw_mode
;
5519 const struct iwl_channel_info
*ch_info
;
5520 u16 passive_dwell
= 0;
5521 u16 active_dwell
= 0;
5524 hw_mode
= iwl_get_hw_mode(priv
, phymode
);
5528 channels
= hw_mode
->channels
;
5530 active_dwell
= iwl_get_active_dwell_time(priv
, phymode
);
5531 passive_dwell
= iwl_get_passive_dwell_time(priv
, phymode
);
5533 for (i
= 0, added
= 0; i
< hw_mode
->num_channels
; i
++) {
5534 if (channels
[i
].chan
==
5535 le16_to_cpu(priv
->active_rxon
.channel
)) {
5536 if (iwl_is_associated(priv
)) {
5538 ("Skipping current channel %d\n",
5539 le16_to_cpu(priv
->active_rxon
.channel
));
5542 } else if (priv
->only_active_channel
)
5545 scan_ch
->channel
= channels
[i
].chan
;
5547 ch_info
= iwl_get_channel_info(priv
, phymode
, scan_ch
->channel
);
5548 if (!is_channel_valid(ch_info
)) {
5549 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5554 if (!is_active
|| is_channel_passive(ch_info
) ||
5555 !(channels
[i
].flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
))
5556 scan_ch
->type
= 0; /* passive */
5558 scan_ch
->type
= 1; /* active */
5560 if (scan_ch
->type
& 1)
5561 scan_ch
->type
|= (direct_mask
<< 1);
5563 if (is_channel_narrow(ch_info
))
5564 scan_ch
->type
|= (1 << 7);
5566 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
5567 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
5569 /* Set power levels to defaults */
5570 scan_ch
->tpc
.dsp_atten
= 110;
5571 /* scan_pwr_info->tpc.dsp_atten; */
5573 /*scan_pwr_info->tpc.tx_gain; */
5574 if (phymode
== MODE_IEEE80211A
)
5575 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
5577 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
5578 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5580 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5584 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5586 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
5587 (scan_ch
->type
& 1) ?
5588 active_dwell
: passive_dwell
);
5594 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
5598 static void iwl_reset_channel_flag(struct iwl_priv
*priv
)
5601 for (i
= 0; i
< 3; i
++) {
5602 struct ieee80211_hw_mode
*hw_mode
= (void *)&priv
->modes
[i
];
5603 for (j
= 0; j
< hw_mode
->num_channels
; j
++)
5604 hw_mode
->channels
[j
].flag
= hw_mode
->channels
[j
].val
;
5608 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
5609 struct ieee80211_rate
*rates
)
5613 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
5614 rates
[i
].rate
= iwl_rates
[i
].ieee
* 5;
5615 rates
[i
].val
= i
; /* Rate scaling will work on indexes */
5617 rates
[i
].flags
= IEEE80211_RATE_SUPPORTED
;
5618 /* Only OFDM have the bits-per-symbol set */
5619 if ((i
<= IWL_LAST_OFDM_RATE
) && (i
>= IWL_FIRST_OFDM_RATE
))
5620 rates
[i
].flags
|= IEEE80211_RATE_OFDM
;
5623 * If CCK 1M then set rate flag to CCK else CCK_2
5624 * which is CCK | PREAMBLE2
5626 rates
[i
].flags
|= (iwl_rates
[i
].plcp
== 10) ?
5627 IEEE80211_RATE_CCK
: IEEE80211_RATE_CCK_2
;
5630 /* Set up which ones are basic rates... */
5631 if (IWL_BASIC_RATES_MASK
& (1 << i
))
5632 rates
[i
].flags
|= IEEE80211_RATE_BASIC
;
5635 iwl4965_init_hw_rates(priv
, rates
);
5639 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5641 static int iwl_init_geos(struct iwl_priv
*priv
)
5643 struct iwl_channel_info
*ch
;
5644 struct ieee80211_hw_mode
*modes
;
5645 struct ieee80211_channel
*channels
;
5646 struct ieee80211_channel
*geo_ch
;
5647 struct ieee80211_rate
*rates
;
5659 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5660 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5664 modes
= kzalloc(sizeof(struct ieee80211_hw_mode
) * mode_count
,
5669 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
5670 priv
->channel_count
, GFP_KERNEL
);
5676 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_MAX_RATES
+ 1)),
5689 /* 5.2GHz channels start after the 2.4GHz channels */
5690 modes
[A
].mode
= MODE_IEEE80211A
;
5691 modes
[A
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5692 modes
[A
].rates
= rates
;
5693 modes
[A
].num_rates
= 8; /* just OFDM */
5694 modes
[A
].rates
= &rates
[4];
5695 modes
[A
].num_channels
= 0;
5697 modes
[B
].mode
= MODE_IEEE80211B
;
5698 modes
[B
].channels
= channels
;
5699 modes
[B
].rates
= rates
;
5700 modes
[B
].num_rates
= 4; /* just CCK */
5701 modes
[B
].num_channels
= 0;
5703 modes
[G
].mode
= MODE_IEEE80211G
;
5704 modes
[G
].channels
= channels
;
5705 modes
[G
].rates
= rates
;
5706 modes
[G
].num_rates
= 12; /* OFDM & CCK */
5707 modes
[G
].num_channels
= 0;
5709 modes
[G_11N
].mode
= MODE_IEEE80211G
;
5710 modes
[G_11N
].channels
= channels
;
5711 modes
[G_11N
].num_rates
= 13; /* OFDM & CCK */
5712 modes
[G_11N
].rates
= rates
;
5713 modes
[G_11N
].num_channels
= 0;
5715 modes
[A_11N
].mode
= MODE_IEEE80211A
;
5716 modes
[A_11N
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5717 modes
[A_11N
].rates
= &rates
[4];
5718 modes
[A_11N
].num_rates
= 9; /* just OFDM */
5719 modes
[A_11N
].num_channels
= 0;
5721 priv
->ieee_channels
= channels
;
5722 priv
->ieee_rates
= rates
;
5724 iwl_init_hw_rates(priv
, rates
);
5726 for (i
= 0, geo_ch
= channels
; i
< priv
->channel_count
; i
++) {
5727 ch
= &priv
->channel_info
[i
];
5729 if (!is_channel_valid(ch
)) {
5730 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5732 ch
->channel
, is_channel_a_band(ch
) ?
5737 if (is_channel_a_band(ch
)) {
5738 geo_ch
= &modes
[A
].channels
[modes
[A
].num_channels
++];
5739 modes
[A_11N
].num_channels
++;
5741 geo_ch
= &modes
[B
].channels
[modes
[B
].num_channels
++];
5742 modes
[G
].num_channels
++;
5743 modes
[G_11N
].num_channels
++;
5746 geo_ch
->freq
= ieee80211chan2mhz(ch
->channel
);
5747 geo_ch
->chan
= ch
->channel
;
5748 geo_ch
->power_level
= ch
->max_power_avg
;
5749 geo_ch
->antenna_max
= 0xff;
5751 if (is_channel_valid(ch
)) {
5752 geo_ch
->flag
= IEEE80211_CHAN_W_SCAN
;
5753 if (ch
->flags
& EEPROM_CHANNEL_IBSS
)
5754 geo_ch
->flag
|= IEEE80211_CHAN_W_IBSS
;
5756 if (ch
->flags
& EEPROM_CHANNEL_ACTIVE
)
5757 geo_ch
->flag
|= IEEE80211_CHAN_W_ACTIVE_SCAN
;
5759 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
5760 geo_ch
->flag
|= IEEE80211_CHAN_W_RADAR_DETECT
;
5762 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
5763 priv
->max_channel_txpower_limit
=
5767 geo_ch
->val
= geo_ch
->flag
;
5770 if ((modes
[A
].num_channels
== 0) && priv
->is_abg
) {
5771 printk(KERN_INFO DRV_NAME
5772 ": Incorrectly detected BG card as ABG. Please send "
5773 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5774 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
5778 printk(KERN_INFO DRV_NAME
5779 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5780 modes
[G
].num_channels
, modes
[A
].num_channels
);
5783 * NOTE: We register these in preference of order -- the
5784 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5785 * a phymode based on rates or AP capabilities but seems to
5786 * configure it purely on if the channel being configured
5787 * is supported by a mode -- and the first match is taken
5790 if (modes
[G
].num_channels
)
5791 ieee80211_register_hwmode(priv
->hw
, &modes
[G
]);
5792 if (modes
[B
].num_channels
)
5793 ieee80211_register_hwmode(priv
->hw
, &modes
[B
]);
5794 if (modes
[A
].num_channels
)
5795 ieee80211_register_hwmode(priv
->hw
, &modes
[A
]);
5797 priv
->modes
= modes
;
5798 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5803 /******************************************************************************
5805 * uCode download functions
5807 ******************************************************************************/
5809 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
5811 if (priv
->ucode_code
.v_addr
!= NULL
) {
5812 pci_free_consistent(priv
->pci_dev
,
5813 priv
->ucode_code
.len
,
5814 priv
->ucode_code
.v_addr
,
5815 priv
->ucode_code
.p_addr
);
5816 priv
->ucode_code
.v_addr
= NULL
;
5818 if (priv
->ucode_data
.v_addr
!= NULL
) {
5819 pci_free_consistent(priv
->pci_dev
,
5820 priv
->ucode_data
.len
,
5821 priv
->ucode_data
.v_addr
,
5822 priv
->ucode_data
.p_addr
);
5823 priv
->ucode_data
.v_addr
= NULL
;
5825 if (priv
->ucode_data_backup
.v_addr
!= NULL
) {
5826 pci_free_consistent(priv
->pci_dev
,
5827 priv
->ucode_data_backup
.len
,
5828 priv
->ucode_data_backup
.v_addr
,
5829 priv
->ucode_data_backup
.p_addr
);
5830 priv
->ucode_data_backup
.v_addr
= NULL
;
5832 if (priv
->ucode_init
.v_addr
!= NULL
) {
5833 pci_free_consistent(priv
->pci_dev
,
5834 priv
->ucode_init
.len
,
5835 priv
->ucode_init
.v_addr
,
5836 priv
->ucode_init
.p_addr
);
5837 priv
->ucode_init
.v_addr
= NULL
;
5839 if (priv
->ucode_init_data
.v_addr
!= NULL
) {
5840 pci_free_consistent(priv
->pci_dev
,
5841 priv
->ucode_init_data
.len
,
5842 priv
->ucode_init_data
.v_addr
,
5843 priv
->ucode_init_data
.p_addr
);
5844 priv
->ucode_init_data
.v_addr
= NULL
;
5846 if (priv
->ucode_boot
.v_addr
!= NULL
) {
5847 pci_free_consistent(priv
->pci_dev
,
5848 priv
->ucode_boot
.len
,
5849 priv
->ucode_boot
.v_addr
,
5850 priv
->ucode_boot
.p_addr
);
5851 priv
->ucode_boot
.v_addr
= NULL
;
5856 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5857 * looking at all data.
5859 static int iwl_verify_inst_full(struct iwl_priv
*priv
, __le32
* image
, u32 len
)
5866 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5868 rc
= iwl_grab_restricted_access(priv
);
5872 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5875 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5876 /* read data comes through single port, auto-incr addr */
5877 /* NOTE: Use the debugless read so we don't flood kernel log
5878 * if IWL_DL_IO is set */
5879 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5880 if (val
!= le32_to_cpu(*image
)) {
5881 IWL_ERROR("uCode INST section is invalid at "
5882 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5883 save_len
- len
, val
, le32_to_cpu(*image
));
5891 iwl_release_restricted_access(priv
);
5895 ("ucode image in INSTRUCTION memory is good\n");
5902 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5903 * using sample data 100 bytes apart. If these sample points are good,
5904 * it's a pretty good bet that everything between them is good, too.
5906 static int iwl_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5913 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5915 rc
= iwl_grab_restricted_access(priv
);
5919 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5920 /* read data comes through single port, auto-incr addr */
5921 /* NOTE: Use the debugless read so we don't flood kernel log
5922 * if IWL_DL_IO is set */
5923 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
,
5924 i
+ RTC_INST_LOWER_BOUND
);
5925 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5926 if (val
!= le32_to_cpu(*image
)) {
5927 #if 0 /* Enable this if you want to see details */
5928 IWL_ERROR("uCode INST section is invalid at "
5929 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5939 iwl_release_restricted_access(priv
);
5946 * iwl_verify_ucode - determine which instruction image is in SRAM,
5947 * and verify its contents
5949 static int iwl_verify_ucode(struct iwl_priv
*priv
)
5956 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5957 len
= priv
->ucode_boot
.len
;
5958 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5960 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5964 /* Try initialize */
5965 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5966 len
= priv
->ucode_init
.len
;
5967 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5969 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5973 /* Try runtime/protocol */
5974 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5975 len
= priv
->ucode_code
.len
;
5976 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5978 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5982 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5984 /* Show first several data entries in instruction SRAM.
5985 * Selection of bootstrap image is arbitrary. */
5986 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5987 len
= priv
->ucode_boot
.len
;
5988 rc
= iwl_verify_inst_full(priv
, image
, len
);
5994 /* check contents of special bootstrap uCode SRAM */
5995 static int iwl_verify_bsm(struct iwl_priv
*priv
)
5997 __le32
*image
= priv
->ucode_boot
.v_addr
;
5998 u32 len
= priv
->ucode_boot
.len
;
6002 IWL_DEBUG_INFO("Begin verify bsm\n");
6004 /* verify BSM SRAM contents */
6005 val
= iwl_read_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
);
6006 for (reg
= BSM_SRAM_LOWER_BOUND
;
6007 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
6008 reg
+= sizeof(u32
), image
++) {
6009 val
= iwl_read_restricted_reg(priv
, reg
);
6010 if (val
!= le32_to_cpu(*image
)) {
6011 IWL_ERROR("BSM uCode verification failed at "
6012 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6013 BSM_SRAM_LOWER_BOUND
,
6014 reg
- BSM_SRAM_LOWER_BOUND
, len
,
6015 val
, le32_to_cpu(*image
));
6020 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6026 * iwl_load_bsm - Load bootstrap instructions
6030 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6031 * in special SRAM that does not power down during RFKILL. When powering back
6032 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6033 * the bootstrap program into the on-board processor, and starts it.
6035 * The bootstrap program loads (via DMA) instructions and data for a new
6036 * program from host DRAM locations indicated by the host driver in the
6037 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6040 * When initializing the NIC, the host driver points the BSM to the
6041 * "initialize" uCode image. This uCode sets up some internal data, then
6042 * notifies host via "initialize alive" that it is complete.
6044 * The host then replaces the BSM_DRAM_* pointer values to point to the
6045 * normal runtime uCode instructions and a backup uCode data cache buffer
6046 * (filled initially with starting data values for the on-board processor),
6047 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6048 * which begins normal operation.
6050 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6051 * the backup data cache in DRAM before SRAM is powered down.
6053 * When powering back up, the BSM loads the bootstrap program. This reloads
6054 * the runtime uCode instructions and the backup data cache into SRAM,
6055 * and re-launches the runtime uCode from where it left off.
6057 static int iwl_load_bsm(struct iwl_priv
*priv
)
6059 __le32
*image
= priv
->ucode_boot
.v_addr
;
6060 u32 len
= priv
->ucode_boot
.len
;
6070 IWL_DEBUG_INFO("Begin load bsm\n");
6072 /* make sure bootstrap program is no larger than BSM's SRAM size */
6073 if (len
> IWL_MAX_BSM_SIZE
)
6076 /* Tell bootstrap uCode where to find the "Initialize" uCode
6077 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6078 * NOTE: iwl_initialize_alive_start() will replace these values,
6079 * after the "initialize" uCode has run, to point to
6080 * runtime/protocol instructions and backup data cache. */
6081 pinst
= priv
->ucode_init
.p_addr
>> 4;
6082 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
6083 inst_len
= priv
->ucode_init
.len
;
6084 data_len
= priv
->ucode_init_data
.len
;
6086 rc
= iwl_grab_restricted_access(priv
);
6090 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6091 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6092 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
6093 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
6095 /* Fill BSM memory with bootstrap instructions */
6096 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
6097 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
6098 reg_offset
+= sizeof(u32
), image
++)
6099 _iwl_write_restricted_reg(priv
, reg_offset
,
6100 le32_to_cpu(*image
));
6102 rc
= iwl_verify_bsm(priv
);
6104 iwl_release_restricted_access(priv
);
6108 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6109 iwl_write_restricted_reg(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
6110 iwl_write_restricted_reg(priv
, BSM_WR_MEM_DST_REG
,
6111 RTC_INST_LOWER_BOUND
);
6112 iwl_write_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
6114 /* Load bootstrap code into instruction SRAM now,
6115 * to prepare to load "initialize" uCode */
6116 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6117 BSM_WR_CTRL_REG_BIT_START
);
6119 /* Wait for load of bootstrap uCode to finish */
6120 for (i
= 0; i
< 100; i
++) {
6121 done
= iwl_read_restricted_reg(priv
, BSM_WR_CTRL_REG
);
6122 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
6127 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
6129 IWL_ERROR("BSM write did not complete!\n");
6133 /* Enable future boot loads whenever power management unit triggers it
6134 * (e.g. when powering back up after power-save shutdown) */
6135 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6136 BSM_WR_CTRL_REG_BIT_START_EN
);
6138 iwl_release_restricted_access(priv
);
6143 static void iwl_nic_start(struct iwl_priv
*priv
)
6145 /* Remove all resets to allow NIC to operate */
6146 iwl_write32(priv
, CSR_RESET
, 0);
6150 * iwl_read_ucode - Read uCode images from disk file.
6152 * Copy into buffers for card to fetch via bus-mastering
6154 static int iwl_read_ucode(struct iwl_priv
*priv
)
6156 struct iwl_ucode
*ucode
;
6158 const struct firmware
*ucode_raw
;
6159 const char *name
= "iwlwifi-4965" IWL4965_UCODE_API
".ucode";
6162 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
6164 /* Ask kernel firmware_class module to get the boot firmware off disk.
6165 * request_firmware() is synchronous, file is in memory on return. */
6166 rc
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
6168 IWL_ERROR("%s firmware file req failed: Reason %d\n", name
, rc
);
6172 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6173 name
, ucode_raw
->size
);
6175 /* Make sure that we got at least our header! */
6176 if (ucode_raw
->size
< sizeof(*ucode
)) {
6177 IWL_ERROR("File size way too small!\n");
6182 /* Data from ucode file: header followed by uCode images */
6183 ucode
= (void *)ucode_raw
->data
;
6185 ver
= le32_to_cpu(ucode
->ver
);
6186 inst_size
= le32_to_cpu(ucode
->inst_size
);
6187 data_size
= le32_to_cpu(ucode
->data_size
);
6188 init_size
= le32_to_cpu(ucode
->init_size
);
6189 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
6190 boot_size
= le32_to_cpu(ucode
->boot_size
);
6192 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
6193 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6195 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6197 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6199 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6201 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6204 /* Verify size of file vs. image size info in file's header */
6205 if (ucode_raw
->size
< sizeof(*ucode
) +
6206 inst_size
+ data_size
+ init_size
+
6207 init_data_size
+ boot_size
) {
6209 IWL_DEBUG_INFO("uCode file size %d too small\n",
6210 (int)ucode_raw
->size
);
6215 /* Verify that uCode images will fit in card's SRAM */
6216 if (inst_size
> IWL_MAX_INST_SIZE
) {
6217 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6223 if (data_size
> IWL_MAX_DATA_SIZE
) {
6224 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6229 if (init_size
> IWL_MAX_INST_SIZE
) {
6231 ("uCode init instr len %d too large to fit in card\n",
6236 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
6238 ("uCode init data len %d too large to fit in card\n",
6239 (int)init_data_size
);
6243 if (boot_size
> IWL_MAX_BSM_SIZE
) {
6245 ("uCode boot instr len %d too large to fit in bsm\n",
6251 /* Allocate ucode buffers for card's bus-master loading ... */
6253 /* Runtime instructions and 2 copies of data:
6254 * 1) unmodified from disk
6255 * 2) backup cache for save/restore during power-downs */
6256 priv
->ucode_code
.len
= inst_size
;
6257 priv
->ucode_code
.v_addr
=
6258 pci_alloc_consistent(priv
->pci_dev
,
6259 priv
->ucode_code
.len
,
6260 &(priv
->ucode_code
.p_addr
));
6262 priv
->ucode_data
.len
= data_size
;
6263 priv
->ucode_data
.v_addr
=
6264 pci_alloc_consistent(priv
->pci_dev
,
6265 priv
->ucode_data
.len
,
6266 &(priv
->ucode_data
.p_addr
));
6268 priv
->ucode_data_backup
.len
= data_size
;
6269 priv
->ucode_data_backup
.v_addr
=
6270 pci_alloc_consistent(priv
->pci_dev
,
6271 priv
->ucode_data_backup
.len
,
6272 &(priv
->ucode_data_backup
.p_addr
));
6275 /* Initialization instructions and data */
6276 priv
->ucode_init
.len
= init_size
;
6277 priv
->ucode_init
.v_addr
=
6278 pci_alloc_consistent(priv
->pci_dev
,
6279 priv
->ucode_init
.len
,
6280 &(priv
->ucode_init
.p_addr
));
6282 priv
->ucode_init_data
.len
= init_data_size
;
6283 priv
->ucode_init_data
.v_addr
=
6284 pci_alloc_consistent(priv
->pci_dev
,
6285 priv
->ucode_init_data
.len
,
6286 &(priv
->ucode_init_data
.p_addr
));
6288 /* Bootstrap (instructions only, no data) */
6289 priv
->ucode_boot
.len
= boot_size
;
6290 priv
->ucode_boot
.v_addr
=
6291 pci_alloc_consistent(priv
->pci_dev
,
6292 priv
->ucode_boot
.len
,
6293 &(priv
->ucode_boot
.p_addr
));
6295 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
6296 !priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
||
6297 !priv
->ucode_boot
.v_addr
|| !priv
->ucode_data_backup
.v_addr
)
6300 /* Copy images into buffers for card's bus-master reads ... */
6302 /* Runtime instructions (first block of data in file) */
6303 src
= &ucode
->data
[0];
6304 len
= priv
->ucode_code
.len
;
6305 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6307 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
6308 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6309 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
6311 /* Runtime data (2nd block)
6312 * NOTE: Copy into backup buffer will be done in iwl_up() */
6313 src
= &ucode
->data
[inst_size
];
6314 len
= priv
->ucode_data
.len
;
6315 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6317 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
6318 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
6320 /* Initialization instructions (3rd block) */
6322 src
= &ucode
->data
[inst_size
+ data_size
];
6323 len
= priv
->ucode_init
.len
;
6324 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6326 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
6329 /* Initialization data (4th block) */
6330 if (init_data_size
) {
6331 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
6332 len
= priv
->ucode_init_data
.len
;
6333 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6335 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
6338 /* Bootstrap instructions (5th block) */
6339 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
6340 len
= priv
->ucode_boot
.len
;
6341 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6343 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
6345 /* We have our copies now, allow OS release its copies */
6346 release_firmware(ucode_raw
);
6350 IWL_ERROR("failed to allocate pci memory\n");
6352 iwl_dealloc_ucode_pci(priv
);
6355 release_firmware(ucode_raw
);
6363 * iwl_set_ucode_ptrs - Set uCode address location
6365 * Tell initialization uCode where to find runtime uCode.
6367 * BSM registers initially contain pointers to initialization uCode.
6368 * We need to replace them to load runtime uCode inst and data,
6369 * and to save runtime data when powering down.
6371 static int iwl_set_ucode_ptrs(struct iwl_priv
*priv
)
6376 unsigned long flags
;
6378 /* bits 35:4 for 4965 */
6379 pinst
= priv
->ucode_code
.p_addr
>> 4;
6380 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
6382 spin_lock_irqsave(&priv
->lock
, flags
);
6383 rc
= iwl_grab_restricted_access(priv
);
6385 spin_unlock_irqrestore(&priv
->lock
, flags
);
6389 /* Tell bootstrap uCode where to find image to load */
6390 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6391 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6392 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
6393 priv
->ucode_data
.len
);
6395 /* Inst bytecount must be last to set up, bit 31 signals uCode
6396 * that all new ptr/size info is in place */
6397 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
6398 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
6400 iwl_release_restricted_access(priv
);
6402 spin_unlock_irqrestore(&priv
->lock
, flags
);
6404 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6410 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6412 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6414 * The 4965 "initialize" ALIVE reply contains calibration data for:
6415 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6416 * (3945 does not contain this data).
6418 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6420 static void iwl_init_alive_start(struct iwl_priv
*priv
)
6422 /* Check alive response for "valid" sign from uCode */
6423 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
6424 /* We had an error bringing up the hardware, so take it
6425 * all the way back down so we can try again */
6426 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6430 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6431 * This is a paranoid check, because we would not have gotten the
6432 * "initialize" alive if code weren't properly loaded. */
6433 if (iwl_verify_ucode(priv
)) {
6434 /* Runtime instruction load was bad;
6435 * take it all the way back down so we can try again */
6436 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6440 /* Calculate temperature */
6441 priv
->temperature
= iwl4965_get_temperature(priv
);
6443 /* Send pointers to protocol/runtime uCode image ... init code will
6444 * load and launch runtime uCode, which will send us another "Alive"
6446 IWL_DEBUG_INFO("Initialization Alive received.\n");
6447 if (iwl_set_ucode_ptrs(priv
)) {
6448 /* Runtime instruction load won't happen;
6449 * take it all the way back down so we can try again */
6450 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6456 queue_work(priv
->workqueue
, &priv
->restart
);
6461 * iwl_alive_start - called after REPLY_ALIVE notification received
6462 * from protocol/runtime uCode (initialization uCode's
6463 * Alive gets handled by iwl_init_alive_start()).
6465 static void iwl_alive_start(struct iwl_priv
*priv
)
6469 IWL_DEBUG_INFO("Runtime Alive received.\n");
6471 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
6472 /* We had an error bringing up the hardware, so take it
6473 * all the way back down so we can try again */
6474 IWL_DEBUG_INFO("Alive failed.\n");
6478 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6479 * This is a paranoid check, because we would not have gotten the
6480 * "runtime" alive if code weren't properly loaded. */
6481 if (iwl_verify_ucode(priv
)) {
6482 /* Runtime instruction load was bad;
6483 * take it all the way back down so we can try again */
6484 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6488 iwl_clear_stations_table(priv
);
6490 rc
= iwl4965_alive_notify(priv
);
6492 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6497 /* After the ALIVE response, we can process host commands */
6498 set_bit(STATUS_ALIVE
, &priv
->status
);
6500 /* Clear out the uCode error bit if it is set */
6501 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
6503 rc
= iwl_init_channel_map(priv
);
6505 IWL_ERROR("initializing regulatory failed: %d\n", rc
);
6509 iwl_init_geos(priv
);
6511 if (iwl_is_rfkill(priv
))
6514 if (!priv
->mac80211_registered
) {
6515 /* Unlock so any user space entry points can call back into
6516 * the driver without a deadlock... */
6517 mutex_unlock(&priv
->mutex
);
6518 iwl_rate_control_register(priv
->hw
);
6519 rc
= ieee80211_register_hw(priv
->hw
);
6520 priv
->hw
->conf
.beacon_int
= 100;
6521 mutex_lock(&priv
->mutex
);
6524 IWL_ERROR("Failed to register network "
6525 "device (error %d)\n", rc
);
6529 priv
->mac80211_registered
= 1;
6531 iwl_reset_channel_flag(priv
);
6533 ieee80211_start_queues(priv
->hw
);
6535 priv
->active_rate
= priv
->rates_mask
;
6536 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
6538 iwl_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
6540 if (iwl_is_associated(priv
)) {
6541 struct iwl_rxon_cmd
*active_rxon
=
6542 (struct iwl_rxon_cmd
*)(&priv
->active_rxon
);
6544 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
6545 sizeof(priv
->staging_rxon
));
6546 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6548 /* Initialize our rx_config data */
6549 iwl_connection_init_rx_config(priv
);
6550 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
6553 /* Configure BT coexistence */
6554 iwl_send_bt_config(priv
);
6556 /* Configure the adapter for unassociated operation */
6557 iwl_commit_rxon(priv
);
6559 /* At this point, the NIC is initialized and operational */
6560 priv
->notif_missed_beacons
= 0;
6561 set_bit(STATUS_READY
, &priv
->status
);
6563 iwl4965_rf_kill_ct_config(priv
);
6564 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6566 if (priv
->error_recovering
)
6567 iwl_error_recovery(priv
);
6572 queue_work(priv
->workqueue
, &priv
->restart
);
6575 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
6577 static void __iwl_down(struct iwl_priv
*priv
)
6579 unsigned long flags
;
6580 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6581 struct ieee80211_conf
*conf
= NULL
;
6583 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
6585 conf
= ieee80211_get_hw_conf(priv
->hw
);
6588 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6590 iwl_clear_stations_table(priv
);
6592 /* Unblock any waiting calls */
6593 wake_up_interruptible_all(&priv
->wait_command_queue
);
6595 iwl_cancel_deferred_work(priv
);
6597 /* Wipe out the EXIT_PENDING status bit if we are not actually
6598 * exiting the module */
6600 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6602 /* stop and reset the on-board processor */
6603 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
6605 /* tell the device to stop sending interrupts */
6606 iwl_disable_interrupts(priv
);
6608 if (priv
->mac80211_registered
)
6609 ieee80211_stop_queues(priv
->hw
);
6611 /* If we have not previously called iwl_init() then
6612 * clear all bits but the RF Kill and SUSPEND bits and return */
6613 if (!iwl_is_init(priv
)) {
6614 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6616 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6618 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6623 /* ...otherwise clear out all the status bits but the RF Kill and
6624 * SUSPEND bits and continue taking the NIC down. */
6625 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6627 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6629 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6631 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
6634 spin_lock_irqsave(&priv
->lock
, flags
);
6635 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
6636 spin_unlock_irqrestore(&priv
->lock
, flags
);
6638 iwl_hw_txq_ctx_stop(priv
);
6639 iwl_hw_rxq_stop(priv
);
6641 spin_lock_irqsave(&priv
->lock
, flags
);
6642 if (!iwl_grab_restricted_access(priv
)) {
6643 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
6644 APMG_CLK_VAL_DMA_CLK_RQT
);
6645 iwl_release_restricted_access(priv
);
6647 spin_unlock_irqrestore(&priv
->lock
, flags
);
6651 iwl_hw_nic_stop_master(priv
);
6652 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
6653 iwl_hw_nic_reset(priv
);
6656 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
6658 if (priv
->ibss_beacon
)
6659 dev_kfree_skb(priv
->ibss_beacon
);
6660 priv
->ibss_beacon
= NULL
;
6662 /* clear out any free frames */
6663 iwl_clear_free_frames(priv
);
6666 static void iwl_down(struct iwl_priv
*priv
)
6668 mutex_lock(&priv
->mutex
);
6670 mutex_unlock(&priv
->mutex
);
6673 #define MAX_HW_RESTARTS 5
6675 static int __iwl_up(struct iwl_priv
*priv
)
6677 DECLARE_MAC_BUF(mac
);
6681 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6682 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6686 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
6687 IWL_WARNING("Radio disabled by SW RF kill (module "
6692 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6694 rc
= iwl_hw_nic_init(priv
);
6696 IWL_ERROR("Unable to int nic\n");
6700 /* make sure rfkill handshake bits are cleared */
6701 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6702 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
6703 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
6705 /* clear (again), then enable host interrupts */
6706 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6707 iwl_enable_interrupts(priv
);
6709 /* really make sure rfkill handshake bits are cleared */
6710 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6711 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6713 /* Copy original ucode data image from disk into backup cache.
6714 * This will be used to initialize the on-board processor's
6715 * data SRAM for a clean start when the runtime program first loads. */
6716 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
6717 priv
->ucode_data
.len
);
6719 /* If platform's RF_KILL switch is set to KILL,
6720 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6721 * and getting things started */
6722 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
6723 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
6726 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) || hw_rf_kill
) {
6727 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6731 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
6733 iwl_clear_stations_table(priv
);
6735 /* load bootstrap state machine,
6736 * load bootstrap program into processor's memory,
6737 * prepare to load the "initialize" uCode */
6738 rc
= iwl_load_bsm(priv
);
6741 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc
);
6745 /* start card; "initialize" will load runtime ucode */
6746 iwl_nic_start(priv
);
6748 /* MAC Address location in EEPROM same for 3945/4965 */
6749 get_eeprom_mac(priv
, priv
->mac_addr
);
6750 IWL_DEBUG_INFO("MAC address: %s\n",
6751 print_mac(mac
, priv
->mac_addr
));
6753 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
6755 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
6760 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6763 /* tried to restart and config the device for as long as our
6764 * patience could withstand */
6765 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
6770 /*****************************************************************************
6772 * Workqueue callbacks
6774 *****************************************************************************/
6776 static void iwl_bg_init_alive_start(struct work_struct
*data
)
6778 struct iwl_priv
*priv
=
6779 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
6781 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6784 mutex_lock(&priv
->mutex
);
6785 iwl_init_alive_start(priv
);
6786 mutex_unlock(&priv
->mutex
);
6789 static void iwl_bg_alive_start(struct work_struct
*data
)
6791 struct iwl_priv
*priv
=
6792 container_of(data
, struct iwl_priv
, alive_start
.work
);
6794 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6797 mutex_lock(&priv
->mutex
);
6798 iwl_alive_start(priv
);
6799 mutex_unlock(&priv
->mutex
);
6802 static void iwl_bg_rf_kill(struct work_struct
*work
)
6804 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
6806 wake_up_interruptible(&priv
->wait_command_queue
);
6808 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6811 mutex_lock(&priv
->mutex
);
6813 if (!iwl_is_rfkill(priv
)) {
6814 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
6815 "HW and/or SW RF Kill no longer active, restarting "
6817 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6818 queue_work(priv
->workqueue
, &priv
->restart
);
6821 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
6822 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6823 "disabled by SW switch\n");
6825 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6826 "Kill switch must be turned off for "
6827 "wireless networking to work.\n");
6829 mutex_unlock(&priv
->mutex
);
6832 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6834 static void iwl_bg_scan_check(struct work_struct
*data
)
6836 struct iwl_priv
*priv
=
6837 container_of(data
, struct iwl_priv
, scan_check
.work
);
6839 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6842 mutex_lock(&priv
->mutex
);
6843 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
6844 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6845 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
6846 "Scan completion watchdog resetting adapter (%dms)\n",
6847 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
6849 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6850 iwl_send_scan_abort(priv
);
6852 mutex_unlock(&priv
->mutex
);
6855 static void iwl_bg_request_scan(struct work_struct
*data
)
6857 struct iwl_priv
*priv
=
6858 container_of(data
, struct iwl_priv
, request_scan
);
6859 struct iwl_host_cmd cmd
= {
6860 .id
= REPLY_SCAN_CMD
,
6861 .len
= sizeof(struct iwl_scan_cmd
),
6862 .meta
.flags
= CMD_SIZE_HUGE
,
6865 struct iwl_scan_cmd
*scan
;
6866 struct ieee80211_conf
*conf
= NULL
;
6870 conf
= ieee80211_get_hw_conf(priv
->hw
);
6872 mutex_lock(&priv
->mutex
);
6874 if (!iwl_is_ready(priv
)) {
6875 IWL_WARNING("request scan called when driver not ready.\n");
6879 /* Make sure the scan wasn't cancelled before this queued work
6880 * was given the chance to run... */
6881 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
6884 /* This should never be called or scheduled if there is currently
6885 * a scan active in the hardware. */
6886 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
6887 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6888 "Ignoring second request.\n");
6893 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6894 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6898 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6899 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6903 if (iwl_is_rfkill(priv
)) {
6904 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6908 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6909 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6913 if (!priv
->scan_bands
) {
6914 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6919 priv
->scan
= kmalloc(sizeof(struct iwl_scan_cmd
) +
6920 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
6927 memset(scan
, 0, sizeof(struct iwl_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
6929 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
6930 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
6932 if (iwl_is_associated(priv
)) {
6935 u32 suspend_time
= 100;
6936 u32 scan_suspend_time
= 100;
6937 unsigned long flags
;
6939 IWL_DEBUG_INFO("Scanning while associated...\n");
6941 spin_lock_irqsave(&priv
->lock
, flags
);
6942 interval
= priv
->beacon_int
;
6943 spin_unlock_irqrestore(&priv
->lock
, flags
);
6945 scan
->suspend_time
= 0;
6946 scan
->max_out_time
= cpu_to_le32(200 * 1024);
6948 interval
= suspend_time
;
6950 extra
= (suspend_time
/ interval
) << 22;
6951 scan_suspend_time
= (extra
|
6952 ((suspend_time
% interval
) * 1024));
6953 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
6954 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6955 scan_suspend_time
, interval
);
6958 /* We should add the ability for user to lock to PASSIVE ONLY */
6959 if (priv
->one_direct_scan
) {
6961 ("Kicking off one direct scan for '%s'\n",
6962 iwl_escape_essid(priv
->direct_ssid
,
6963 priv
->direct_ssid_len
));
6964 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6965 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
6966 memcpy(scan
->direct_scan
[0].ssid
,
6967 priv
->direct_ssid
, priv
->direct_ssid_len
);
6969 } else if (!iwl_is_associated(priv
) && priv
->essid_len
) {
6970 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6971 scan
->direct_scan
[0].len
= priv
->essid_len
;
6972 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
6977 /* We don't build a direct scan probe request; the uCode will do
6978 * that based on the direct_mask added to each channel entry */
6979 scan
->tx_cmd
.len
= cpu_to_le16(
6980 iwl_fill_probe_req(priv
, (struct ieee80211_mgmt
*)scan
->data
,
6981 IWL_MAX_SCAN_SIZE
- sizeof(scan
), 0));
6982 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6983 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6984 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6986 /* flags + rate selection */
6988 scan
->tx_cmd
.tx_flags
|= cpu_to_le32(0x200);
6990 switch (priv
->scan_bands
) {
6992 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6993 scan
->tx_cmd
.rate_n_flags
=
6994 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
6995 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
6997 scan
->good_CRC_th
= 0;
6998 phymode
= MODE_IEEE80211G
;
7002 scan
->tx_cmd
.rate_n_flags
=
7003 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
7004 RATE_MCS_ANT_B_MSK
);
7005 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
7006 phymode
= MODE_IEEE80211A
;
7010 IWL_WARNING("Invalid scan band count\n");
7014 /* select Rx chains */
7016 /* Force use of chains B and C (0x6) for scan Rx.
7017 * Avoid A (0x1) because of its off-channel reception on A-band.
7018 * MIMO is not used here, but value is required to make uCode happy. */
7019 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
7020 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
7021 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
7022 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
7024 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
7025 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
7029 ("Initiating direct scan for %s.\n",
7030 iwl_escape_essid(priv
->essid
, priv
->essid_len
));
7032 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7034 scan
->channel_count
=
7035 iwl_get_channels_for_scan(
7036 priv
, phymode
, 1, /* active */
7038 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
7040 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
7041 scan
->channel_count
* sizeof(struct iwl_scan_channel
);
7043 scan
->len
= cpu_to_le16(cmd
.len
);
7045 set_bit(STATUS_SCAN_HW
, &priv
->status
);
7046 rc
= iwl_send_cmd_sync(priv
, &cmd
);
7050 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
7051 IWL_SCAN_CHECK_WATCHDOG
);
7053 mutex_unlock(&priv
->mutex
);
7057 /* inform mac80211 sacn aborted */
7058 queue_work(priv
->workqueue
, &priv
->scan_completed
);
7059 mutex_unlock(&priv
->mutex
);
7062 static void iwl_bg_up(struct work_struct
*data
)
7064 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
7066 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7069 mutex_lock(&priv
->mutex
);
7071 mutex_unlock(&priv
->mutex
);
7074 static void iwl_bg_restart(struct work_struct
*data
)
7076 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
7078 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7082 queue_work(priv
->workqueue
, &priv
->up
);
7085 static void iwl_bg_rx_replenish(struct work_struct
*data
)
7087 struct iwl_priv
*priv
=
7088 container_of(data
, struct iwl_priv
, rx_replenish
);
7090 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7093 mutex_lock(&priv
->mutex
);
7094 iwl_rx_replenish(priv
);
7095 mutex_unlock(&priv
->mutex
);
7098 static void iwl_bg_post_associate(struct work_struct
*data
)
7100 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
7101 post_associate
.work
);
7104 struct ieee80211_conf
*conf
= NULL
;
7105 DECLARE_MAC_BUF(mac
);
7107 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7108 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
7112 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7114 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
7117 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7120 mutex_lock(&priv
->mutex
);
7122 if (!priv
->interface_id
|| !priv
->is_open
) {
7123 mutex_unlock(&priv
->mutex
);
7126 iwl_scan_cancel_timeout(priv
, 200);
7128 conf
= ieee80211_get_hw_conf(priv
->hw
);
7130 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7131 iwl_commit_rxon(priv
);
7133 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7134 iwl_setup_rxon_timing(priv
);
7135 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7136 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7138 IWL_WARNING("REPLY_RXON_TIMING failed - "
7139 "Attempting to continue.\n");
7141 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7143 #ifdef CONFIG_IWLWIFI_HT
7144 if (priv
->is_ht_enabled
&& priv
->current_assoc_ht
.is_ht
)
7145 iwl4965_set_rxon_ht(priv
, &priv
->current_assoc_ht
);
7147 priv
->active_rate_ht
[0] = 0;
7148 priv
->active_rate_ht
[1] = 0;
7149 priv
->current_channel_width
= IWL_CHANNEL_WIDTH_20MHZ
;
7151 #endif /* CONFIG_IWLWIFI_HT*/
7152 iwl4965_set_rxon_chain(priv
);
7153 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7155 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7156 priv
->assoc_id
, priv
->beacon_int
);
7158 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7159 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
7161 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7163 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7164 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7165 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
7167 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7169 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7170 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7174 iwl_commit_rxon(priv
);
7176 switch (priv
->iw_mode
) {
7177 case IEEE80211_IF_TYPE_STA
:
7178 iwl_rate_scale_init(priv
->hw
, IWL_AP_ID
);
7181 case IEEE80211_IF_TYPE_IBSS
:
7183 /* clear out the station table */
7184 iwl_clear_stations_table(priv
);
7186 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7187 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
7188 iwl_rate_scale_init(priv
->hw
, IWL_STA_ID
);
7189 iwl_send_beacon_cmd(priv
);
7194 IWL_ERROR("%s Should not be called in %d mode\n",
7195 __FUNCTION__
, priv
->iw_mode
);
7199 iwl_sequence_reset(priv
);
7201 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7202 /* Enable Rx differential gain and sensitivity calibrations */
7203 iwl4965_chain_noise_reset(priv
);
7204 priv
->start_calib
= 1;
7205 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7207 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7208 priv
->assoc_station_added
= 1;
7210 #ifdef CONFIG_IWLWIFI_QOS
7211 iwl_activate_qos(priv
, 0);
7212 #endif /* CONFIG_IWLWIFI_QOS */
7213 mutex_unlock(&priv
->mutex
);
7216 static void iwl_bg_abort_scan(struct work_struct
*work
)
7218 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
7221 if (!iwl_is_ready(priv
))
7224 mutex_lock(&priv
->mutex
);
7226 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
7227 iwl_send_scan_abort(priv
);
7229 mutex_unlock(&priv
->mutex
);
7232 static void iwl_bg_scan_completed(struct work_struct
*work
)
7234 struct iwl_priv
*priv
=
7235 container_of(work
, struct iwl_priv
, scan_completed
);
7237 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
7239 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7242 ieee80211_scan_completed(priv
->hw
);
7244 /* Since setting the TXPOWER may have been deferred while
7245 * performing the scan, fire one off */
7246 mutex_lock(&priv
->mutex
);
7247 iwl_hw_reg_send_txpower(priv
);
7248 mutex_unlock(&priv
->mutex
);
7251 /*****************************************************************************
7253 * mac80211 entry point functions
7255 *****************************************************************************/
7257 static int iwl_mac_start(struct ieee80211_hw
*hw
)
7259 struct iwl_priv
*priv
= hw
->priv
;
7261 IWL_DEBUG_MAC80211("enter\n");
7263 /* we should be verifying the device is ready to be opened */
7264 mutex_lock(&priv
->mutex
);
7268 if (!iwl_is_rfkill(priv
))
7269 ieee80211_start_queues(priv
->hw
);
7271 mutex_unlock(&priv
->mutex
);
7272 IWL_DEBUG_MAC80211("leave\n");
7276 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
7278 struct iwl_priv
*priv
= hw
->priv
;
7280 IWL_DEBUG_MAC80211("enter\n");
7283 mutex_lock(&priv
->mutex
);
7284 /* stop mac, cancel any scan request and clear
7285 * RXON_FILTER_ASSOC_MSK BIT
7288 iwl_scan_cancel_timeout(priv
, 100);
7289 cancel_delayed_work(&priv
->post_associate
);
7290 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7291 iwl_commit_rxon(priv
);
7292 mutex_unlock(&priv
->mutex
);
7294 IWL_DEBUG_MAC80211("leave\n");
7297 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7298 struct ieee80211_tx_control
*ctl
)
7300 struct iwl_priv
*priv
= hw
->priv
;
7302 IWL_DEBUG_MAC80211("enter\n");
7304 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
7305 IWL_DEBUG_MAC80211("leave - monitor\n");
7309 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
7312 if (iwl_tx_skb(priv
, skb
, ctl
))
7313 dev_kfree_skb_any(skb
);
7315 IWL_DEBUG_MAC80211("leave\n");
7319 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
7320 struct ieee80211_if_init_conf
*conf
)
7322 struct iwl_priv
*priv
= hw
->priv
;
7323 unsigned long flags
;
7324 DECLARE_MAC_BUF(mac
);
7326 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf
->if_id
, conf
->type
);
7328 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7329 print_mac(mac
, conf
->mac_addr
));
7331 if (priv
->interface_id
) {
7332 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7336 spin_lock_irqsave(&priv
->lock
, flags
);
7337 priv
->interface_id
= conf
->if_id
;
7339 spin_unlock_irqrestore(&priv
->lock
, flags
);
7341 mutex_lock(&priv
->mutex
);
7342 iwl_set_mode(priv
, conf
->type
);
7344 IWL_DEBUG_MAC80211("leave\n");
7345 mutex_unlock(&priv
->mutex
);
7351 * iwl_mac_config - mac80211 config callback
7353 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7354 * be set inappropriately and the driver currently sets the hardware up to
7355 * use it whenever needed.
7357 static int iwl_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
7359 struct iwl_priv
*priv
= hw
->priv
;
7360 const struct iwl_channel_info
*ch_info
;
7361 unsigned long flags
;
7363 mutex_lock(&priv
->mutex
);
7364 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
);
7366 if (!iwl_is_ready(priv
)) {
7367 IWL_DEBUG_MAC80211("leave - not ready\n");
7368 mutex_unlock(&priv
->mutex
);
7372 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7373 * what is exposed through include/ declrations */
7374 if (unlikely(!iwl_param_disable_hw_scan
&&
7375 test_bit(STATUS_SCANNING
, &priv
->status
))) {
7376 IWL_DEBUG_MAC80211("leave - scanning\n");
7377 mutex_unlock(&priv
->mutex
);
7381 spin_lock_irqsave(&priv
->lock
, flags
);
7383 ch_info
= iwl_get_channel_info(priv
, conf
->phymode
, conf
->channel
);
7384 if (!is_channel_valid(ch_info
)) {
7385 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7386 conf
->channel
, conf
->phymode
);
7387 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7388 spin_unlock_irqrestore(&priv
->lock
, flags
);
7389 mutex_unlock(&priv
->mutex
);
7393 #ifdef CONFIG_IWLWIFI_HT
7394 /* if we are switching fron ht to 2.4 clear flags
7395 * from any ht related info since 2.4 does not
7397 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
)
7398 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7399 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
7402 priv
->staging_rxon
.flags
= 0;
7403 #endif /* CONFIG_IWLWIFI_HT */
7405 iwl_set_rxon_channel(priv
, conf
->phymode
, conf
->channel
);
7407 iwl_set_flags_for_phymode(priv
, conf
->phymode
);
7409 /* The list of supported rates and rate mask can be different
7410 * for each phymode; since the phymode may have changed, reset
7411 * the rate mask to what mac80211 lists */
7414 spin_unlock_irqrestore(&priv
->lock
, flags
);
7416 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7417 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
7418 iwl_hw_channel_switch(priv
, conf
->channel
);
7419 mutex_unlock(&priv
->mutex
);
7424 iwl_radio_kill_sw(priv
, !conf
->radio_enabled
);
7426 if (!conf
->radio_enabled
) {
7427 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7428 mutex_unlock(&priv
->mutex
);
7432 if (iwl_is_rfkill(priv
)) {
7433 IWL_DEBUG_MAC80211("leave - RF kill\n");
7434 mutex_unlock(&priv
->mutex
);
7440 if (memcmp(&priv
->active_rxon
,
7441 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
7442 iwl_commit_rxon(priv
);
7444 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7446 IWL_DEBUG_MAC80211("leave\n");
7448 mutex_unlock(&priv
->mutex
);
7453 static void iwl_config_ap(struct iwl_priv
*priv
)
7457 if (priv
->status
& STATUS_EXIT_PENDING
)
7460 /* The following should be done only at AP bring up */
7461 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
7463 /* RXON - unassoc (to set timing command) */
7464 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7465 iwl_commit_rxon(priv
);
7468 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7469 iwl_setup_rxon_timing(priv
);
7470 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7471 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7473 IWL_WARNING("REPLY_RXON_TIMING failed - "
7474 "Attempting to continue.\n");
7476 iwl4965_set_rxon_chain(priv
);
7478 /* FIXME: what should be the assoc_id for AP? */
7479 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7480 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7481 priv
->staging_rxon
.flags
|=
7482 RXON_FLG_SHORT_PREAMBLE_MSK
;
7484 priv
->staging_rxon
.flags
&=
7485 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7487 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7488 if (priv
->assoc_capability
&
7489 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7490 priv
->staging_rxon
.flags
|=
7491 RXON_FLG_SHORT_SLOT_MSK
;
7493 priv
->staging_rxon
.flags
&=
7494 ~RXON_FLG_SHORT_SLOT_MSK
;
7496 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7497 priv
->staging_rxon
.flags
&=
7498 ~RXON_FLG_SHORT_SLOT_MSK
;
7500 /* restore RXON assoc */
7501 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7502 iwl_commit_rxon(priv
);
7503 #ifdef CONFIG_IWLWIFI_QOS
7504 iwl_activate_qos(priv
, 1);
7506 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7508 iwl_send_beacon_cmd(priv
);
7510 /* FIXME - we need to add code here to detect a totally new
7511 * configuration, reset the AP, unassoc, rxon timing, assoc,
7512 * clear sta table, add BCAST sta... */
7515 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
, int if_id
,
7516 struct ieee80211_if_conf
*conf
)
7518 struct iwl_priv
*priv
= hw
->priv
;
7519 DECLARE_MAC_BUF(mac
);
7520 unsigned long flags
;
7526 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
7527 (!conf
->beacon
|| !conf
->ssid_len
)) {
7529 ("Leaving in AP mode because HostAPD is not ready.\n");
7533 mutex_lock(&priv
->mutex
);
7535 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id
);
7537 IWL_DEBUG_MAC80211("bssid: %s\n",
7538 print_mac(mac
, conf
->bssid
));
7541 * very dubious code was here; the probe filtering flag is never set:
7543 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7544 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7546 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
7547 IWL_DEBUG_MAC80211("leave - scanning\n");
7548 mutex_unlock(&priv
->mutex
);
7552 if (priv
->interface_id
!= if_id
) {
7553 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7554 mutex_unlock(&priv
->mutex
);
7558 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7560 conf
->bssid
= priv
->mac_addr
;
7561 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
7562 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7563 print_mac(mac
, conf
->bssid
));
7565 if (priv
->ibss_beacon
)
7566 dev_kfree_skb(priv
->ibss_beacon
);
7568 priv
->ibss_beacon
= conf
->beacon
;
7571 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
7572 !is_multicast_ether_addr(conf
->bssid
)) {
7573 /* If there is currently a HW scan going on in the background
7574 * then we need to cancel it else the RXON below will fail. */
7575 if (iwl_scan_cancel_timeout(priv
, 100)) {
7576 IWL_WARNING("Aborted scan still in progress "
7578 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7579 mutex_unlock(&priv
->mutex
);
7582 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
7584 /* TODO: Audit driver for usage of these members and see
7585 * if mac80211 deprecates them (priv->bssid looks like it
7586 * shouldn't be there, but I haven't scanned the IBSS code
7587 * to verify) - jpk */
7588 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
7590 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7591 iwl_config_ap(priv
);
7593 rc
= iwl_commit_rxon(priv
);
7594 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
7595 iwl_rxon_add_station(
7596 priv
, priv
->active_rxon
.bssid_addr
, 1);
7600 iwl_scan_cancel_timeout(priv
, 100);
7601 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7602 iwl_commit_rxon(priv
);
7605 spin_lock_irqsave(&priv
->lock
, flags
);
7606 if (!conf
->ssid_len
)
7607 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7609 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
7611 priv
->essid_len
= conf
->ssid_len
;
7612 spin_unlock_irqrestore(&priv
->lock
, flags
);
7614 IWL_DEBUG_MAC80211("leave\n");
7615 mutex_unlock(&priv
->mutex
);
7620 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
7621 unsigned int changed_flags
,
7622 unsigned int *total_flags
,
7623 int mc_count
, struct dev_addr_list
*mc_list
)
7627 * see also iwl_connection_init_rx_config
7632 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
7633 struct ieee80211_if_init_conf
*conf
)
7635 struct iwl_priv
*priv
= hw
->priv
;
7637 IWL_DEBUG_MAC80211("enter\n");
7639 mutex_lock(&priv
->mutex
);
7641 iwl_scan_cancel_timeout(priv
, 100);
7642 cancel_delayed_work(&priv
->post_associate
);
7643 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7644 iwl_commit_rxon(priv
);
7646 if (priv
->interface_id
== conf
->if_id
) {
7647 priv
->interface_id
= 0;
7648 memset(priv
->bssid
, 0, ETH_ALEN
);
7649 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7650 priv
->essid_len
= 0;
7652 mutex_unlock(&priv
->mutex
);
7654 IWL_DEBUG_MAC80211("leave\n");
7658 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7659 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
7662 unsigned long flags
;
7663 struct iwl_priv
*priv
= hw
->priv
;
7665 IWL_DEBUG_MAC80211("enter\n");
7667 mutex_lock(&priv
->mutex
);
7668 spin_lock_irqsave(&priv
->lock
, flags
);
7670 if (!iwl_is_ready_rf(priv
)) {
7672 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7676 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
7678 IWL_ERROR("ERROR: APs don't scan\n");
7682 /* if we just finished scan ask for delay */
7683 if (priv
->last_scan_jiffies
&&
7684 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
,
7690 IWL_DEBUG_SCAN("direct scan for "
7692 iwl_escape_essid(ssid
, len
), (int)len
);
7694 priv
->one_direct_scan
= 1;
7695 priv
->direct_ssid_len
= (u8
)
7696 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
7697 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
7699 priv
->one_direct_scan
= 0;
7701 rc
= iwl_scan_initiate(priv
);
7703 IWL_DEBUG_MAC80211("leave\n");
7706 spin_unlock_irqrestore(&priv
->lock
, flags
);
7707 mutex_unlock(&priv
->mutex
);
7712 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
7713 const u8
*local_addr
, const u8
*addr
,
7714 struct ieee80211_key_conf
*key
)
7716 struct iwl_priv
*priv
= hw
->priv
;
7717 DECLARE_MAC_BUF(mac
);
7721 IWL_DEBUG_MAC80211("enter\n");
7723 if (!iwl_param_hwcrypto
) {
7724 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7728 if (is_zero_ether_addr(addr
))
7729 /* only support pairwise keys */
7732 sta_id
= iwl_hw_find_station(priv
, addr
);
7733 if (sta_id
== IWL_INVALID_STATION
) {
7734 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7735 print_mac(mac
, addr
));
7739 mutex_lock(&priv
->mutex
);
7741 iwl_scan_cancel_timeout(priv
, 100);
7745 rc
= iwl_update_sta_key_info(priv
, key
, sta_id
);
7747 iwl_set_rxon_hwcrypto(priv
, 1);
7748 iwl_commit_rxon(priv
);
7749 key
->hw_key_idx
= sta_id
;
7750 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7751 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
7755 rc
= iwl_clear_sta_key_info(priv
, sta_id
);
7757 iwl_set_rxon_hwcrypto(priv
, 0);
7758 iwl_commit_rxon(priv
);
7759 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7766 IWL_DEBUG_MAC80211("leave\n");
7767 mutex_unlock(&priv
->mutex
);
7772 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7773 const struct ieee80211_tx_queue_params
*params
)
7775 struct iwl_priv
*priv
= hw
->priv
;
7776 #ifdef CONFIG_IWLWIFI_QOS
7777 unsigned long flags
;
7779 #endif /* CONFIG_IWL_QOS */
7781 IWL_DEBUG_MAC80211("enter\n");
7783 if (!iwl_is_ready_rf(priv
)) {
7784 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7788 if (queue
>= AC_NUM
) {
7789 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7793 #ifdef CONFIG_IWLWIFI_QOS
7794 if (!priv
->qos_data
.qos_enable
) {
7795 priv
->qos_data
.qos_active
= 0;
7796 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7799 q
= AC_NUM
- 1 - queue
;
7801 spin_lock_irqsave(&priv
->lock
, flags
);
7803 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7804 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7805 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7806 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7807 cpu_to_le16((params
->burst_time
* 100));
7809 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7810 priv
->qos_data
.qos_active
= 1;
7812 spin_unlock_irqrestore(&priv
->lock
, flags
);
7814 mutex_lock(&priv
->mutex
);
7815 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7816 iwl_activate_qos(priv
, 1);
7817 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7818 iwl_activate_qos(priv
, 0);
7820 mutex_unlock(&priv
->mutex
);
7822 #endif /*CONFIG_IWLWIFI_QOS */
7824 IWL_DEBUG_MAC80211("leave\n");
7828 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7829 struct ieee80211_tx_queue_stats
*stats
)
7831 struct iwl_priv
*priv
= hw
->priv
;
7833 struct iwl_tx_queue
*txq
;
7834 struct iwl_queue
*q
;
7835 unsigned long flags
;
7837 IWL_DEBUG_MAC80211("enter\n");
7839 if (!iwl_is_ready_rf(priv
)) {
7840 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7844 spin_lock_irqsave(&priv
->lock
, flags
);
7846 for (i
= 0; i
< AC_NUM
; i
++) {
7847 txq
= &priv
->txq
[i
];
7849 avail
= iwl_queue_space(q
);
7851 stats
->data
[i
].len
= q
->n_window
- avail
;
7852 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7853 stats
->data
[i
].count
= q
->n_window
;
7856 spin_unlock_irqrestore(&priv
->lock
, flags
);
7858 IWL_DEBUG_MAC80211("leave\n");
7863 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
7864 struct ieee80211_low_level_stats
*stats
)
7866 IWL_DEBUG_MAC80211("enter\n");
7867 IWL_DEBUG_MAC80211("leave\n");
7872 static u64
iwl_mac_get_tsf(struct ieee80211_hw
*hw
)
7874 IWL_DEBUG_MAC80211("enter\n");
7875 IWL_DEBUG_MAC80211("leave\n");
7880 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
7882 struct iwl_priv
*priv
= hw
->priv
;
7883 unsigned long flags
;
7885 mutex_lock(&priv
->mutex
);
7886 IWL_DEBUG_MAC80211("enter\n");
7888 priv
->lq_mngr
.lq_ready
= 0;
7889 #ifdef CONFIG_IWLWIFI_HT
7890 spin_lock_irqsave(&priv
->lock
, flags
);
7891 memset(&priv
->current_assoc_ht
, 0, sizeof(struct sta_ht_info
));
7892 spin_unlock_irqrestore(&priv
->lock
, flags
);
7893 #ifdef CONFIG_IWLWIFI_HT_AGG
7894 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7895 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7897 memset(&(priv
->lq_mngr
.agg_ctrl
), 0, sizeof(struct iwl_agg_control
));
7898 priv
->lq_mngr
.agg_ctrl
.tid_traffic_load_threshold
= 10;
7899 priv
->lq_mngr
.agg_ctrl
.ba_timeout
= 5000;
7900 priv
->lq_mngr
.agg_ctrl
.auto_agg
= 1;
7902 if (priv
->lq_mngr
.agg_ctrl
.auto_agg
)
7903 priv
->lq_mngr
.agg_ctrl
.requested_ba
= TID_ALL_ENABLED
;
7904 #endif /*CONFIG_IWLWIFI_HT_AGG */
7905 #endif /* CONFIG_IWLWIFI_HT */
7907 #ifdef CONFIG_IWLWIFI_QOS
7908 iwl_reset_qos(priv
);
7911 cancel_delayed_work(&priv
->post_associate
);
7913 spin_lock_irqsave(&priv
->lock
, flags
);
7915 priv
->assoc_capability
= 0;
7916 priv
->call_post_assoc_from_beacon
= 0;
7917 priv
->assoc_station_added
= 0;
7919 /* new association get rid of ibss beacon skb */
7920 if (priv
->ibss_beacon
)
7921 dev_kfree_skb(priv
->ibss_beacon
);
7923 priv
->ibss_beacon
= NULL
;
7925 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7926 priv
->timestamp1
= 0;
7927 priv
->timestamp0
= 0;
7928 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7929 priv
->beacon_int
= 0;
7931 spin_unlock_irqrestore(&priv
->lock
, flags
);
7933 /* we are restarting association process
7934 * clear RXON_FILTER_ASSOC_MSK bit
7936 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
7937 iwl_scan_cancel_timeout(priv
, 100);
7938 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7939 iwl_commit_rxon(priv
);
7942 /* Per mac80211.h: This is only used in IBSS mode... */
7943 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7945 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7946 mutex_unlock(&priv
->mutex
);
7950 if (!iwl_is_ready_rf(priv
)) {
7951 IWL_DEBUG_MAC80211("leave - not ready\n");
7952 mutex_unlock(&priv
->mutex
);
7956 priv
->only_active_channel
= 0;
7960 mutex_unlock(&priv
->mutex
);
7962 IWL_DEBUG_MAC80211("leave\n");
7966 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7967 struct ieee80211_tx_control
*control
)
7969 struct iwl_priv
*priv
= hw
->priv
;
7970 unsigned long flags
;
7972 mutex_lock(&priv
->mutex
);
7973 IWL_DEBUG_MAC80211("enter\n");
7975 if (!iwl_is_ready_rf(priv
)) {
7976 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7977 mutex_unlock(&priv
->mutex
);
7981 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7982 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7983 mutex_unlock(&priv
->mutex
);
7987 spin_lock_irqsave(&priv
->lock
, flags
);
7989 if (priv
->ibss_beacon
)
7990 dev_kfree_skb(priv
->ibss_beacon
);
7992 priv
->ibss_beacon
= skb
;
7996 IWL_DEBUG_MAC80211("leave\n");
7997 spin_unlock_irqrestore(&priv
->lock
, flags
);
7999 #ifdef CONFIG_IWLWIFI_QOS
8000 iwl_reset_qos(priv
);
8003 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8005 mutex_unlock(&priv
->mutex
);
8010 #ifdef CONFIG_IWLWIFI_HT
8013 u16 advanced_coding_cap
:1;
8014 u16 supported_chan_width_set
:1;
8015 u16 mimo_power_save_mode
:2;
8021 u16 beam_forming
:1;
8023 u16 maximal_amsdu_size
:1;
8024 u16 cck_mode_at_40MHz
:1;
8025 u16 psmp_support
:1;
8026 u16 stbc_ctrl_frame_support
:1;
8027 u16 sig_txop_protection_support
:1;
8030 } __attribute__ ((packed
));
8032 union ht_param_info
{
8034 u8 max_rx_ampdu_factor
:2;
8039 } __attribute__ ((packed
));
8041 union ht_exra_param_info
{
8043 u8 ext_chan_offset
:2;
8044 u8 tx_chan_width
:1;
8046 u8 controlled_access_only
:1;
8047 u8 service_interval_granularity
:3;
8050 } __attribute__ ((packed
));
8052 union ht_operation_mode
{
8059 } __attribute__ ((packed
));
8062 static int sta_ht_info_init(struct ieee80211_ht_capability
*ht_cap
,
8063 struct ieee80211_ht_additional_info
*ht_extra
,
8064 struct sta_ht_info
*ht_info_ap
,
8065 struct sta_ht_info
*ht_info
)
8067 union ht_cap_info cap
;
8068 union ht_operation_mode op_mode
;
8069 union ht_param_info param_info
;
8070 union ht_exra_param_info extra_param_info
;
8072 IWL_DEBUG_MAC80211("enter: \n");
8075 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8080 cap
.val
= (u16
) le16_to_cpu(ht_cap
->capabilities_info
);
8081 param_info
.val
= ht_cap
->mac_ht_params_info
;
8084 ht_info
->sgf
|= 0x1;
8086 ht_info
->sgf
|= 0x2;
8087 ht_info
->is_green_field
= cap
.green_field
;
8088 ht_info
->max_amsdu_size
= cap
.maximal_amsdu_size
;
8089 ht_info
->supported_chan_width
= cap
.supported_chan_width_set
;
8090 ht_info
->tx_mimo_ps_mode
= cap
.mimo_power_save_mode
;
8091 memcpy(ht_info
->supp_rates
, ht_cap
->supported_mcs_set
, 16);
8093 ht_info
->ampdu_factor
= param_info
.max_rx_ampdu_factor
;
8094 ht_info
->mpdu_density
= param_info
.mpdu_density
;
8096 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8097 ht_cap
->supported_mcs_set
[0],
8098 ht_cap
->supported_mcs_set
[1]);
8101 ht_info
->control_channel
= ht_info_ap
->control_channel
;
8102 ht_info
->extension_chan_offset
=
8103 ht_info_ap
->extension_chan_offset
;
8104 ht_info
->tx_chan_width
= ht_info_ap
->tx_chan_width
;
8105 ht_info
->operating_mode
= ht_info_ap
->operating_mode
;
8109 extra_param_info
.val
= ht_extra
->ht_param
;
8110 ht_info
->control_channel
= ht_extra
->control_chan
;
8111 ht_info
->extension_chan_offset
=
8112 extra_param_info
.ext_chan_offset
;
8113 ht_info
->tx_chan_width
= extra_param_info
.tx_chan_width
;
8115 le16_to_cpu(ht_extra
->operation_mode
);
8116 ht_info
->operating_mode
= op_mode
.op_mode
;
8117 IWL_DEBUG_MAC80211("control channel %d\n",
8118 ht_extra
->control_chan
);
8123 IWL_DEBUG_MAC80211("leave\n");
8127 static int iwl_mac_conf_ht(struct ieee80211_hw
*hw
,
8128 struct ieee80211_ht_capability
*ht_cap
,
8129 struct ieee80211_ht_additional_info
*ht_extra
)
8131 struct iwl_priv
*priv
= hw
->priv
;
8134 IWL_DEBUG_MAC80211("enter: \n");
8136 rs
= sta_ht_info_init(ht_cap
, ht_extra
, NULL
, &priv
->current_assoc_ht
);
8137 iwl4965_set_rxon_chain(priv
);
8139 if (priv
&& priv
->assoc_id
&&
8140 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
8141 unsigned long flags
;
8143 spin_lock_irqsave(&priv
->lock
, flags
);
8144 if (priv
->beacon_int
)
8145 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8147 priv
->call_post_assoc_from_beacon
= 1;
8148 spin_unlock_irqrestore(&priv
->lock
, flags
);
8151 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8152 ht_extra
->control_chan
);
8157 static void iwl_set_ht_capab(struct ieee80211_hw
*hw
,
8158 struct ieee80211_ht_capability
*ht_cap
,
8161 union ht_cap_info cap
;
8162 union ht_param_info param_info
;
8164 memset(&cap
, 0, sizeof(union ht_cap_info
));
8165 memset(¶m_info
, 0, sizeof(union ht_param_info
));
8167 cap
.maximal_amsdu_size
= HT_IE_MAX_AMSDU_SIZE_4K
;
8168 cap
.green_field
= 1;
8171 cap
.supported_chan_width_set
= use_wide_chan
;
8172 cap
.mimo_power_save_mode
= 0x3;
8174 param_info
.max_rx_ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
8175 param_info
.mpdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
8176 ht_cap
->capabilities_info
= (__le16
) cpu_to_le16(cap
.val
);
8177 ht_cap
->mac_ht_params_info
= (u8
) param_info
.val
;
8179 ht_cap
->supported_mcs_set
[0] = 0xff;
8180 ht_cap
->supported_mcs_set
[1] = 0xff;
8181 ht_cap
->supported_mcs_set
[4] =
8182 (cap
.supported_chan_width_set
) ? 0x1: 0x0;
8185 static void iwl_mac_get_ht_capab(struct ieee80211_hw
*hw
,
8186 struct ieee80211_ht_capability
*ht_cap
)
8188 u8 use_wide_channel
= 1;
8189 struct iwl_priv
*priv
= hw
->priv
;
8191 IWL_DEBUG_MAC80211("enter: \n");
8192 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
8193 use_wide_channel
= 0;
8195 /* no fat tx allowed on 2.4GHZ */
8196 if (priv
->phymode
!= MODE_IEEE80211A
)
8197 use_wide_channel
= 0;
8199 iwl_set_ht_capab(hw
, ht_cap
, use_wide_channel
);
8200 IWL_DEBUG_MAC80211("leave: \n");
8202 #endif /*CONFIG_IWLWIFI_HT*/
8204 /*****************************************************************************
8208 *****************************************************************************/
8210 #ifdef CONFIG_IWLWIFI_DEBUG
8213 * The following adds a new attribute to the sysfs representation
8214 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8215 * used for controlling the debug level.
8217 * See the level definitions in iwl for details.
8220 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
8222 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
8224 static ssize_t
store_debug_level(struct device_driver
*d
,
8225 const char *buf
, size_t count
)
8227 char *p
= (char *)buf
;
8230 val
= simple_strtoul(p
, &p
, 0);
8232 printk(KERN_INFO DRV_NAME
8233 ": %s is not in hex or decimal form.\n", buf
);
8235 iwl_debug_level
= val
;
8237 return strnlen(buf
, count
);
8240 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
8241 show_debug_level
, store_debug_level
);
8243 #endif /* CONFIG_IWLWIFI_DEBUG */
8245 static ssize_t
show_rf_kill(struct device
*d
,
8246 struct device_attribute
*attr
, char *buf
)
8249 * 0 - RF kill not enabled
8250 * 1 - SW based RF kill active (sysfs)
8251 * 2 - HW based RF kill active
8252 * 3 - Both HW and SW based RF kill active
8254 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8255 int val
= (test_bit(STATUS_RF_KILL_SW
, &priv
->status
) ? 0x1 : 0x0) |
8256 (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? 0x2 : 0x0);
8258 return sprintf(buf
, "%i\n", val
);
8261 static ssize_t
store_rf_kill(struct device
*d
,
8262 struct device_attribute
*attr
,
8263 const char *buf
, size_t count
)
8265 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8267 mutex_lock(&priv
->mutex
);
8268 iwl_radio_kill_sw(priv
, buf
[0] == '1');
8269 mutex_unlock(&priv
->mutex
);
8274 static DEVICE_ATTR(rf_kill
, S_IWUSR
| S_IRUGO
, show_rf_kill
, store_rf_kill
);
8276 static ssize_t
show_temperature(struct device
*d
,
8277 struct device_attribute
*attr
, char *buf
)
8279 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8281 if (!iwl_is_alive(priv
))
8284 return sprintf(buf
, "%d\n", iwl_hw_get_temperature(priv
));
8287 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
8289 static ssize_t
show_rs_window(struct device
*d
,
8290 struct device_attribute
*attr
,
8293 struct iwl_priv
*priv
= d
->driver_data
;
8294 return iwl_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
8296 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
8298 static ssize_t
show_tx_power(struct device
*d
,
8299 struct device_attribute
*attr
, char *buf
)
8301 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8302 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
8305 static ssize_t
store_tx_power(struct device
*d
,
8306 struct device_attribute
*attr
,
8307 const char *buf
, size_t count
)
8309 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8310 char *p
= (char *)buf
;
8313 val
= simple_strtoul(p
, &p
, 10);
8315 printk(KERN_INFO DRV_NAME
8316 ": %s is not in decimal form.\n", buf
);
8318 iwl_hw_reg_set_txpower(priv
, val
);
8323 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
8325 static ssize_t
show_flags(struct device
*d
,
8326 struct device_attribute
*attr
, char *buf
)
8328 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8330 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
8333 static ssize_t
store_flags(struct device
*d
,
8334 struct device_attribute
*attr
,
8335 const char *buf
, size_t count
)
8337 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8338 u32 flags
= simple_strtoul(buf
, NULL
, 0);
8340 mutex_lock(&priv
->mutex
);
8341 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
8342 /* Cancel any currently running scans... */
8343 if (iwl_scan_cancel_timeout(priv
, 100))
8344 IWL_WARNING("Could not cancel scan.\n");
8346 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8348 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
8349 iwl_commit_rxon(priv
);
8352 mutex_unlock(&priv
->mutex
);
8357 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
8359 static ssize_t
show_filter_flags(struct device
*d
,
8360 struct device_attribute
*attr
, char *buf
)
8362 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8364 return sprintf(buf
, "0x%04X\n",
8365 le32_to_cpu(priv
->active_rxon
.filter_flags
));
8368 static ssize_t
store_filter_flags(struct device
*d
,
8369 struct device_attribute
*attr
,
8370 const char *buf
, size_t count
)
8372 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8373 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
8375 mutex_lock(&priv
->mutex
);
8376 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
8377 /* Cancel any currently running scans... */
8378 if (iwl_scan_cancel_timeout(priv
, 100))
8379 IWL_WARNING("Could not cancel scan.\n");
8381 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8382 "0x%04X\n", filter_flags
);
8383 priv
->staging_rxon
.filter_flags
=
8384 cpu_to_le32(filter_flags
);
8385 iwl_commit_rxon(priv
);
8388 mutex_unlock(&priv
->mutex
);
8393 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
8394 store_filter_flags
);
8396 static ssize_t
show_tune(struct device
*d
,
8397 struct device_attribute
*attr
, char *buf
)
8399 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8401 return sprintf(buf
, "0x%04X\n",
8402 (priv
->phymode
<< 8) |
8403 le16_to_cpu(priv
->active_rxon
.channel
));
8406 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
);
8408 static ssize_t
store_tune(struct device
*d
,
8409 struct device_attribute
*attr
,
8410 const char *buf
, size_t count
)
8412 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8413 char *p
= (char *)buf
;
8414 u16 tune
= simple_strtoul(p
, &p
, 0);
8415 u8 phymode
= (tune
>> 8) & 0xff;
8416 u16 channel
= tune
& 0xff;
8418 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode
, channel
);
8420 mutex_lock(&priv
->mutex
);
8421 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
) ||
8422 (priv
->phymode
!= phymode
)) {
8423 const struct iwl_channel_info
*ch_info
;
8425 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
8427 IWL_WARNING("Requested invalid phymode/channel "
8428 "combination: %d %d\n", phymode
, channel
);
8429 mutex_unlock(&priv
->mutex
);
8433 /* Cancel any currently running scans... */
8434 if (iwl_scan_cancel_timeout(priv
, 100))
8435 IWL_WARNING("Could not cancel scan.\n");
8437 IWL_DEBUG_INFO("Committing phymode and "
8438 "rxon.channel = %d %d\n",
8441 iwl_set_rxon_channel(priv
, phymode
, channel
);
8442 iwl_set_flags_for_phymode(priv
, phymode
);
8445 iwl_commit_rxon(priv
);
8448 mutex_unlock(&priv
->mutex
);
8453 static DEVICE_ATTR(tune
, S_IWUSR
| S_IRUGO
, show_tune
, store_tune
);
8455 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8457 static ssize_t
show_measurement(struct device
*d
,
8458 struct device_attribute
*attr
, char *buf
)
8460 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8461 struct iwl_spectrum_notification measure_report
;
8462 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
8463 u8
*data
= (u8
*) & measure_report
;
8464 unsigned long flags
;
8466 spin_lock_irqsave(&priv
->lock
, flags
);
8467 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
8468 spin_unlock_irqrestore(&priv
->lock
, flags
);
8471 memcpy(&measure_report
, &priv
->measure_report
, size
);
8472 priv
->measurement_status
= 0;
8473 spin_unlock_irqrestore(&priv
->lock
, flags
);
8475 while (size
&& (PAGE_SIZE
- len
)) {
8476 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8477 PAGE_SIZE
- len
, 1);
8479 if (PAGE_SIZE
- len
)
8483 size
-= min(size
, 16U);
8489 static ssize_t
store_measurement(struct device
*d
,
8490 struct device_attribute
*attr
,
8491 const char *buf
, size_t count
)
8493 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8494 struct ieee80211_measurement_params params
= {
8495 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
8496 .start_time
= cpu_to_le64(priv
->last_tsf
),
8497 .duration
= cpu_to_le16(1),
8499 u8 type
= IWL_MEASURE_BASIC
;
8505 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
8506 channel
= simple_strtoul(p
, NULL
, 0);
8508 params
.channel
= channel
;
8511 while (*p
&& *p
!= ' ')
8514 type
= simple_strtoul(p
+ 1, NULL
, 0);
8517 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8518 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
8519 iwl_get_measurement(priv
, ¶ms
, type
);
8524 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
8525 show_measurement
, store_measurement
);
8526 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8528 static ssize_t
store_retry_rate(struct device
*d
,
8529 struct device_attribute
*attr
,
8530 const char *buf
, size_t count
)
8532 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8534 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
8535 if (priv
->retry_rate
<= 0)
8536 priv
->retry_rate
= 1;
8541 static ssize_t
show_retry_rate(struct device
*d
,
8542 struct device_attribute
*attr
, char *buf
)
8544 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8545 return sprintf(buf
, "%d", priv
->retry_rate
);
8548 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
8551 static ssize_t
store_power_level(struct device
*d
,
8552 struct device_attribute
*attr
,
8553 const char *buf
, size_t count
)
8555 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8559 mode
= simple_strtoul(buf
, NULL
, 0);
8560 mutex_lock(&priv
->mutex
);
8562 if (!iwl_is_ready(priv
)) {
8567 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
8568 mode
= IWL_POWER_AC
;
8570 mode
|= IWL_POWER_ENABLED
;
8572 if (mode
!= priv
->power_mode
) {
8573 rc
= iwl_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
8575 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8578 priv
->power_mode
= mode
;
8584 mutex_unlock(&priv
->mutex
);
8588 #define MAX_WX_STRING 80
8590 /* Values are in microsecond */
8591 static const s32 timeout_duration
[] = {
8598 static const s32 period_duration
[] = {
8606 static ssize_t
show_power_level(struct device
*d
,
8607 struct device_attribute
*attr
, char *buf
)
8609 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8610 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
8613 p
+= sprintf(p
, "%d ", level
);
8615 case IWL_POWER_MODE_CAM
:
8617 p
+= sprintf(p
, "(AC)");
8619 case IWL_POWER_BATTERY
:
8620 p
+= sprintf(p
, "(BATTERY)");
8624 "(Timeout %dms, Period %dms)",
8625 timeout_duration
[level
- 1] / 1000,
8626 period_duration
[level
- 1] / 1000);
8629 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
8630 p
+= sprintf(p
, " OFF\n");
8632 p
+= sprintf(p
, " \n");
8634 return (p
- buf
+ 1);
8638 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
8641 static ssize_t
show_channels(struct device
*d
,
8642 struct device_attribute
*attr
, char *buf
)
8644 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8646 struct ieee80211_channel
*channels
= NULL
;
8647 const struct ieee80211_hw_mode
*hw_mode
= NULL
;
8650 if (!iwl_is_ready(priv
))
8653 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211G
);
8655 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211B
);
8657 channels
= hw_mode
->channels
;
8658 count
= hw_mode
->num_channels
;
8663 "Displaying %d channels in 2.4GHz band "
8664 "(802.11bg):\n", count
);
8666 for (i
= 0; i
< count
; i
++)
8667 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8669 channels
[i
].power_level
,
8671 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8672 " (IEEE 802.11h required)" : "",
8673 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8676 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8679 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8680 "active/passive" : "passive only");
8682 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211A
);
8684 channels
= hw_mode
->channels
;
8685 count
= hw_mode
->num_channels
;
8691 len
+= sprintf(&buf
[len
], "Displaying %d channels in 5.2GHz band "
8692 "(802.11a):\n", count
);
8694 for (i
= 0; i
< count
; i
++)
8695 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8697 channels
[i
].power_level
,
8699 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8700 " (IEEE 802.11h required)" : "",
8701 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8704 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8707 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8708 "active/passive" : "passive only");
8713 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
8715 static ssize_t
show_statistics(struct device
*d
,
8716 struct device_attribute
*attr
, char *buf
)
8718 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8719 u32 size
= sizeof(struct iwl_notif_statistics
);
8720 u32 len
= 0, ofs
= 0;
8721 u8
*data
= (u8
*) & priv
->statistics
;
8724 if (!iwl_is_alive(priv
))
8727 mutex_lock(&priv
->mutex
);
8728 rc
= iwl_send_statistics_request(priv
);
8729 mutex_unlock(&priv
->mutex
);
8733 "Error sending statistics request: 0x%08X\n", rc
);
8737 while (size
&& (PAGE_SIZE
- len
)) {
8738 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8739 PAGE_SIZE
- len
, 1);
8741 if (PAGE_SIZE
- len
)
8745 size
-= min(size
, 16U);
8751 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
8753 static ssize_t
show_antenna(struct device
*d
,
8754 struct device_attribute
*attr
, char *buf
)
8756 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8758 if (!iwl_is_alive(priv
))
8761 return sprintf(buf
, "%d\n", priv
->antenna
);
8764 static ssize_t
store_antenna(struct device
*d
,
8765 struct device_attribute
*attr
,
8766 const char *buf
, size_t count
)
8769 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8774 if (sscanf(buf
, "%1i", &ant
) != 1) {
8775 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8779 if ((ant
>= 0) && (ant
<= 2)) {
8780 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
8781 priv
->antenna
= (enum iwl_antenna
)ant
;
8783 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
8789 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
8791 static ssize_t
show_status(struct device
*d
,
8792 struct device_attribute
*attr
, char *buf
)
8794 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8795 if (!iwl_is_alive(priv
))
8797 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
8800 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
8802 static ssize_t
dump_error_log(struct device
*d
,
8803 struct device_attribute
*attr
,
8804 const char *buf
, size_t count
)
8806 char *p
= (char *)buf
;
8809 iwl_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
8811 return strnlen(buf
, count
);
8814 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
8816 static ssize_t
dump_event_log(struct device
*d
,
8817 struct device_attribute
*attr
,
8818 const char *buf
, size_t count
)
8820 char *p
= (char *)buf
;
8823 iwl_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
8825 return strnlen(buf
, count
);
8828 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
8830 /*****************************************************************************
8832 * driver setup and teardown
8834 *****************************************************************************/
8836 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
8838 priv
->workqueue
= create_workqueue(DRV_NAME
);
8840 init_waitqueue_head(&priv
->wait_command_queue
);
8842 INIT_WORK(&priv
->up
, iwl_bg_up
);
8843 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
8844 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
8845 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
8846 INIT_WORK(&priv
->request_scan
, iwl_bg_request_scan
);
8847 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
8848 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
8849 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
8850 INIT_DELAYED_WORK(&priv
->post_associate
, iwl_bg_post_associate
);
8851 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
8852 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
8853 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
8855 iwl_hw_setup_deferred_work(priv
);
8857 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
8858 iwl_irq_tasklet
, (unsigned long)priv
);
8861 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
8863 iwl_hw_cancel_deferred_work(priv
);
8865 cancel_delayed_work(&priv
->scan_check
);
8866 cancel_delayed_work(&priv
->alive_start
);
8867 cancel_delayed_work(&priv
->post_associate
);
8868 cancel_work_sync(&priv
->beacon_update
);
8871 static struct attribute
*iwl_sysfs_entries
[] = {
8872 &dev_attr_antenna
.attr
,
8873 &dev_attr_channels
.attr
,
8874 &dev_attr_dump_errors
.attr
,
8875 &dev_attr_dump_events
.attr
,
8876 &dev_attr_flags
.attr
,
8877 &dev_attr_filter_flags
.attr
,
8878 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8879 &dev_attr_measurement
.attr
,
8881 &dev_attr_power_level
.attr
,
8882 &dev_attr_retry_rate
.attr
,
8883 &dev_attr_rf_kill
.attr
,
8884 &dev_attr_rs_window
.attr
,
8885 &dev_attr_statistics
.attr
,
8886 &dev_attr_status
.attr
,
8887 &dev_attr_temperature
.attr
,
8888 &dev_attr_tune
.attr
,
8889 &dev_attr_tx_power
.attr
,
8894 static struct attribute_group iwl_attribute_group
= {
8895 .name
= NULL
, /* put in device directory */
8896 .attrs
= iwl_sysfs_entries
,
8899 static struct ieee80211_ops iwl_hw_ops
= {
8901 .start
= iwl_mac_start
,
8902 .stop
= iwl_mac_stop
,
8903 .add_interface
= iwl_mac_add_interface
,
8904 .remove_interface
= iwl_mac_remove_interface
,
8905 .config
= iwl_mac_config
,
8906 .config_interface
= iwl_mac_config_interface
,
8907 .configure_filter
= iwl_configure_filter
,
8908 .set_key
= iwl_mac_set_key
,
8909 .get_stats
= iwl_mac_get_stats
,
8910 .get_tx_stats
= iwl_mac_get_tx_stats
,
8911 .conf_tx
= iwl_mac_conf_tx
,
8912 .get_tsf
= iwl_mac_get_tsf
,
8913 .reset_tsf
= iwl_mac_reset_tsf
,
8914 .beacon_update
= iwl_mac_beacon_update
,
8915 #ifdef CONFIG_IWLWIFI_HT
8916 .conf_ht
= iwl_mac_conf_ht
,
8917 .get_ht_capab
= iwl_mac_get_ht_capab
,
8918 #ifdef CONFIG_IWLWIFI_HT_AGG
8919 .ht_tx_agg_start
= iwl_mac_ht_tx_agg_start
,
8920 .ht_tx_agg_stop
= iwl_mac_ht_tx_agg_stop
,
8921 .ht_rx_agg_start
= iwl_mac_ht_rx_agg_start
,
8922 .ht_rx_agg_stop
= iwl_mac_ht_rx_agg_stop
,
8923 #endif /* CONFIG_IWLWIFI_HT_AGG */
8924 #endif /* CONFIG_IWLWIFI_HT */
8925 .hw_scan
= iwl_mac_hw_scan
8928 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
8931 struct iwl_priv
*priv
;
8932 struct ieee80211_hw
*hw
;
8935 if (iwl_param_disable_hw_scan
) {
8936 IWL_DEBUG_INFO("Disabling hw_scan\n");
8937 iwl_hw_ops
.hw_scan
= NULL
;
8940 if ((iwl_param_queues_num
> IWL_MAX_NUM_QUEUES
) ||
8941 (iwl_param_queues_num
< IWL_MIN_NUM_QUEUES
)) {
8942 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8943 IWL_MIN_NUM_QUEUES
, IWL_MAX_NUM_QUEUES
);
8948 /* mac80211 allocates memory for this device instance, including
8949 * space for this driver's private structure */
8950 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwl_hw_ops
);
8952 IWL_ERROR("Can not allocate network device\n");
8956 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
8958 hw
->rate_control_algorithm
= "iwl-4965-rs";
8960 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8964 priv
->pci_dev
= pdev
;
8965 priv
->antenna
= (enum iwl_antenna
)iwl_param_antenna
;
8966 #ifdef CONFIG_IWLWIFI_DEBUG
8967 iwl_debug_level
= iwl_param_debug
;
8968 atomic_set(&priv
->restrict_refcnt
, 0);
8970 priv
->retry_rate
= 1;
8972 priv
->ibss_beacon
= NULL
;
8974 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8975 * the range of signal quality values that we'll provide.
8976 * Negative values for level/noise indicate that we'll provide dBm.
8977 * For WE, at least, non-0 values here *enable* display of values
8978 * in app (iwconfig). */
8979 hw
->max_rssi
= -20; /* signal level, negative indicates dBm */
8980 hw
->max_noise
= -20; /* noise level, negative indicates dBm */
8981 hw
->max_signal
= 100; /* link quality indication (%) */
8983 /* Tell mac80211 our Tx characteristics */
8984 hw
->flags
= IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
;
8987 #ifdef CONFIG_IWLWIFI_HT
8988 #ifdef CONFIG_IWLWIFI_HT_AGG
8990 #endif /* CONFIG_IWLWIFI_HT_AGG */
8991 #endif /* CONFIG_IWLWIFI_HT */
8993 spin_lock_init(&priv
->lock
);
8994 spin_lock_init(&priv
->power_data
.lock
);
8995 spin_lock_init(&priv
->sta_lock
);
8996 spin_lock_init(&priv
->hcmd_lock
);
8997 spin_lock_init(&priv
->lq_mngr
.lock
);
8999 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
9000 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
9002 INIT_LIST_HEAD(&priv
->free_frames
);
9004 mutex_init(&priv
->mutex
);
9005 if (pci_enable_device(pdev
)) {
9007 goto out_ieee80211_free_hw
;
9010 pci_set_master(pdev
);
9012 iwl_clear_stations_table(priv
);
9014 priv
->data_retry_limit
= -1;
9015 priv
->ieee_channels
= NULL
;
9016 priv
->ieee_rates
= NULL
;
9019 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
9021 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
9023 printk(KERN_WARNING DRV_NAME
": No suitable DMA available.\n");
9024 goto out_pci_disable_device
;
9027 pci_set_drvdata(pdev
, priv
);
9028 err
= pci_request_regions(pdev
, DRV_NAME
);
9030 goto out_pci_disable_device
;
9031 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9032 * PCI Tx retries from interfering with C3 CPU state */
9033 pci_write_config_byte(pdev
, 0x41, 0x00);
9034 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
9035 if (!priv
->hw_base
) {
9037 goto out_pci_release_regions
;
9040 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9041 (unsigned long long) pci_resource_len(pdev
, 0));
9042 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
9044 /* Initialize module parameter values here */
9046 if (iwl_param_disable
) {
9047 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
9048 IWL_DEBUG_INFO("Radio disabled.\n");
9051 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
9054 priv
->use_ant_b_for_management_frame
= 1; /* start with ant B */
9055 priv
->is_ht_enabled
= 1;
9056 priv
->channel_width
= IWL_CHANNEL_WIDTH_40MHZ
;
9057 priv
->valid_antenna
= 0x7; /* assume all 3 connected */
9058 priv
->ps_mode
= IWL_MIMO_PS_NONE
;
9059 priv
->cck_power_index_compensation
= iwl_read32(
9060 priv
, CSR_HW_REV_WA_REG
);
9062 iwl4965_set_rxon_chain(priv
);
9064 printk(KERN_INFO DRV_NAME
9065 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9067 /* Device-specific setup */
9068 if (iwl_hw_set_hw_setting(priv
)) {
9069 IWL_ERROR("failed to set hw settings\n");
9070 mutex_unlock(&priv
->mutex
);
9074 #ifdef CONFIG_IWLWIFI_QOS
9075 if (iwl_param_qos_enable
)
9076 priv
->qos_data
.qos_enable
= 1;
9078 iwl_reset_qos(priv
);
9080 priv
->qos_data
.qos_active
= 0;
9081 priv
->qos_data
.qos_cap
.val
= 0;
9082 #endif /* CONFIG_IWLWIFI_QOS */
9084 iwl_set_rxon_channel(priv
, MODE_IEEE80211G
, 6);
9085 iwl_setup_deferred_work(priv
);
9086 iwl_setup_rx_handlers(priv
);
9088 priv
->rates_mask
= IWL_RATES_MASK
;
9089 /* If power management is turned on, default to AC mode */
9090 priv
->power_mode
= IWL_POWER_AC
;
9091 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
9093 pci_enable_msi(pdev
);
9095 err
= request_irq(pdev
->irq
, iwl_isr
, IRQF_SHARED
, DRV_NAME
, priv
);
9097 IWL_ERROR("Error allocating IRQ %d\n", pdev
->irq
);
9098 goto out_disable_msi
;
9101 mutex_lock(&priv
->mutex
);
9103 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9105 IWL_ERROR("failed to create sysfs device attributes\n");
9106 mutex_unlock(&priv
->mutex
);
9107 goto out_release_irq
;
9110 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9111 * ucode filename and max sizes are card-specific. */
9112 err
= iwl_read_ucode(priv
);
9114 IWL_ERROR("Could not read microcode: %d\n", err
);
9115 mutex_unlock(&priv
->mutex
);
9119 mutex_unlock(&priv
->mutex
);
9121 IWL_DEBUG_INFO("Queing UP work.\n");
9123 queue_work(priv
->workqueue
, &priv
->up
);
9128 iwl_dealloc_ucode_pci(priv
);
9130 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9133 free_irq(pdev
->irq
, priv
);
9136 pci_disable_msi(pdev
);
9137 destroy_workqueue(priv
->workqueue
);
9138 priv
->workqueue
= NULL
;
9139 iwl_unset_hw_setting(priv
);
9142 pci_iounmap(pdev
, priv
->hw_base
);
9143 out_pci_release_regions
:
9144 pci_release_regions(pdev
);
9145 out_pci_disable_device
:
9146 pci_disable_device(pdev
);
9147 pci_set_drvdata(pdev
, NULL
);
9148 out_ieee80211_free_hw
:
9149 ieee80211_free_hw(priv
->hw
);
9154 static void iwl_pci_remove(struct pci_dev
*pdev
)
9156 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9157 struct list_head
*p
, *q
;
9163 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9165 mutex_lock(&priv
->mutex
);
9166 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
9168 mutex_unlock(&priv
->mutex
);
9170 /* Free MAC hash list for ADHOC */
9171 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
9172 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
9174 kfree(list_entry(p
, struct iwl_ibss_seq
, list
));
9178 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9180 iwl_dealloc_ucode_pci(priv
);
9183 iwl_rx_queue_free(priv
, &priv
->rxq
);
9184 iwl_hw_txq_ctx_free(priv
);
9186 iwl_unset_hw_setting(priv
);
9187 iwl_clear_stations_table(priv
);
9189 if (priv
->mac80211_registered
) {
9190 ieee80211_unregister_hw(priv
->hw
);
9191 iwl_rate_control_unregister(priv
->hw
);
9194 /*netif_stop_queue(dev); */
9195 flush_workqueue(priv
->workqueue
);
9197 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9198 * priv->workqueue... so we can't take down the workqueue
9200 destroy_workqueue(priv
->workqueue
);
9201 priv
->workqueue
= NULL
;
9203 free_irq(pdev
->irq
, priv
);
9204 pci_disable_msi(pdev
);
9205 pci_iounmap(pdev
, priv
->hw_base
);
9206 pci_release_regions(pdev
);
9207 pci_disable_device(pdev
);
9208 pci_set_drvdata(pdev
, NULL
);
9210 kfree(priv
->channel_info
);
9212 kfree(priv
->ieee_channels
);
9213 kfree(priv
->ieee_rates
);
9215 if (priv
->ibss_beacon
)
9216 dev_kfree_skb(priv
->ibss_beacon
);
9218 ieee80211_free_hw(priv
->hw
);
9223 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
9225 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9227 mutex_lock(&priv
->mutex
);
9229 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9231 /* Take down the device; powers it off, etc. */
9234 if (priv
->mac80211_registered
)
9235 ieee80211_stop_queues(priv
->hw
);
9237 pci_save_state(pdev
);
9238 pci_disable_device(pdev
);
9239 pci_set_power_state(pdev
, PCI_D3hot
);
9241 mutex_unlock(&priv
->mutex
);
9246 static void iwl_resume(struct iwl_priv
*priv
)
9248 unsigned long flags
;
9250 /* The following it a temporary work around due to the
9251 * suspend / resume not fully initializing the NIC correctly.
9252 * Without all of the following, resume will not attempt to take
9253 * down the NIC (it shouldn't really need to) and will just try
9254 * and bring the NIC back up. However that fails during the
9255 * ucode verification process. This then causes iwl_down to be
9256 * called *after* iwl_hw_nic_init() has succeeded -- which
9257 * then lets the next init sequence succeed. So, we've
9258 * replicated all of that NIC init code here... */
9260 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9262 iwl_hw_nic_init(priv
);
9264 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9265 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
9266 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
9267 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9268 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9269 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9271 /* tell the device to stop sending interrupts */
9272 iwl_disable_interrupts(priv
);
9274 spin_lock_irqsave(&priv
->lock
, flags
);
9275 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
9277 if (!iwl_grab_restricted_access(priv
)) {
9278 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
9279 APMG_CLK_VAL_DMA_CLK_RQT
);
9280 iwl_release_restricted_access(priv
);
9282 spin_unlock_irqrestore(&priv
->lock
, flags
);
9286 iwl_hw_nic_reset(priv
);
9288 /* Bring the device back up */
9289 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9290 queue_work(priv
->workqueue
, &priv
->up
);
9293 static int iwl_pci_resume(struct pci_dev
*pdev
)
9295 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9298 printk(KERN_INFO
"Coming out of suspend...\n");
9300 mutex_lock(&priv
->mutex
);
9302 pci_set_power_state(pdev
, PCI_D0
);
9303 err
= pci_enable_device(pdev
);
9304 pci_restore_state(pdev
);
9307 * Suspend/Resume resets the PCI configuration space, so we have to
9308 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9309 * from interfering with C3 CPU state. pci_restore_state won't help
9310 * here since it only restores the first 64 bytes pci config header.
9312 pci_write_config_byte(pdev
, 0x41, 0x00);
9315 mutex_unlock(&priv
->mutex
);
9320 #endif /* CONFIG_PM */
9322 /*****************************************************************************
9324 * driver and module entry point
9326 *****************************************************************************/
9328 static struct pci_driver iwl_driver
= {
9330 .id_table
= iwl_hw_card_ids
,
9331 .probe
= iwl_pci_probe
,
9332 .remove
= __devexit_p(iwl_pci_remove
),
9334 .suspend
= iwl_pci_suspend
,
9335 .resume
= iwl_pci_resume
,
9339 static int __init
iwl_init(void)
9343 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
9344 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
9345 ret
= pci_register_driver(&iwl_driver
);
9347 IWL_ERROR("Unable to initialize PCI module\n");
9350 #ifdef CONFIG_IWLWIFI_DEBUG
9351 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9353 IWL_ERROR("Unable to create driver sysfs file\n");
9354 pci_unregister_driver(&iwl_driver
);
9362 static void __exit
iwl_exit(void)
9364 #ifdef CONFIG_IWLWIFI_DEBUG
9365 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9367 pci_unregister_driver(&iwl_driver
);
9370 module_param_named(antenna
, iwl_param_antenna
, int, 0444);
9371 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
9372 module_param_named(disable
, iwl_param_disable
, int, 0444);
9373 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
9374 module_param_named(hwcrypto
, iwl_param_hwcrypto
, int, 0444);
9375 MODULE_PARM_DESC(hwcrypto
,
9376 "using hardware crypto engine (default 0 [software])\n");
9377 module_param_named(debug
, iwl_param_debug
, int, 0444);
9378 MODULE_PARM_DESC(debug
, "debug output mask");
9379 module_param_named(disable_hw_scan
, iwl_param_disable_hw_scan
, int, 0444);
9380 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
9382 module_param_named(queues_num
, iwl_param_queues_num
, int, 0444);
9383 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
9386 module_param_named(qos_enable
, iwl_param_qos_enable
, int, 0444);
9387 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
9389 module_exit(iwl_exit
);
9390 module_init(iwl_init
);