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/skbuff.h>
52 #include <linux/netdevice.h>
53 #include <linux/etherdevice.h>
54 #include <linux/if_arp.h>
56 #include <net/ieee80211_radiotap.h>
57 #include <net/mac80211.h>
59 #include <asm/div64.h>
65 #include "iwl-helpers.h"
67 #ifdef CONFIG_IWLWIFI_DEBUG
71 /******************************************************************************
75 ******************************************************************************/
77 /* module parameters */
78 int iwl_param_disable_hw_scan
;
80 int iwl_param_disable
; /* def: enable radio */
81 int iwl_param_antenna
; /* def: 0 = both antennas (use diversity) */
82 int iwl_param_hwcrypto
; /* def: using software encryption */
83 int iwl_param_qos_enable
= 1;
84 int iwl_param_queues_num
= IWL_MAX_NUM_QUEUES
;
87 * module name, copyright, version, etc.
88 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
91 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
93 #ifdef CONFIG_IWLWIFI_DEBUG
99 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
105 #define IWLWIFI_VERSION "0.1.15k" VD VS
106 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
107 #define DRV_VERSION IWLWIFI_VERSION
109 /* Change firmware file name, using "-" and incrementing number,
110 * *only* when uCode interface or architecture changes so that it
111 * is not compatible with earlier drivers.
112 * This number will also appear in << 8 position of 1st dword of uCode file */
113 #define IWL4965_UCODE_API "-1"
115 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
116 MODULE_VERSION(DRV_VERSION
);
117 MODULE_AUTHOR(DRV_COPYRIGHT
);
118 MODULE_LICENSE("GPL");
120 __le16
*ieee80211_get_qos_ctrl(struct ieee80211_hdr
*hdr
)
122 u16 fc
= le16_to_cpu(hdr
->frame_control
);
123 int hdr_len
= ieee80211_get_hdrlen(fc
);
125 if ((fc
& 0x00cc) == (IEEE80211_STYPE_QOS_DATA
| IEEE80211_FTYPE_DATA
))
126 return (__le16
*) ((u8
*) hdr
+ hdr_len
- QOS_CONTROL_LEN
);
130 static const struct ieee80211_hw_mode
*iwl_get_hw_mode(
131 struct iwl_priv
*priv
, int mode
)
135 for (i
= 0; i
< 3; i
++)
136 if (priv
->modes
[i
].mode
== mode
)
137 return &priv
->modes
[i
];
142 static int iwl_is_empty_essid(const char *essid
, int essid_len
)
144 /* Single white space is for Linksys APs */
145 if (essid_len
== 1 && essid
[0] == ' ')
148 /* Otherwise, if the entire essid is 0, we assume it is hidden */
151 if (essid
[essid_len
] != '\0')
158 static const char *iwl_escape_essid(const char *essid
, u8 essid_len
)
160 static char escaped
[IW_ESSID_MAX_SIZE
* 2 + 1];
161 const char *s
= essid
;
164 if (iwl_is_empty_essid(essid
, essid_len
)) {
165 memcpy(escaped
, "<hidden>", sizeof("<hidden>"));
169 essid_len
= min(essid_len
, (u8
) IW_ESSID_MAX_SIZE
);
170 while (essid_len
--) {
182 static void iwl_print_hex_dump(int level
, void *p
, u32 len
)
184 #ifdef CONFIG_IWLWIFI_DEBUG
185 if (!(iwl_debug_level
& level
))
188 print_hex_dump(KERN_DEBUG
, "iwl data: ", DUMP_PREFIX_OFFSET
, 16, 1,
193 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
196 * Theory of operation
198 * A queue is a circular buffers with 'Read' and 'Write' pointers.
199 * 2 empty entries always kept in the buffer to protect from overflow.
201 * For Tx queue, there are low mark and high mark limits. If, after queuing
202 * the packet for Tx, free space become < low mark, Tx queue stopped. When
203 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
206 * The IWL operates with six queues, one receive queue in the device's
207 * sram, one transmit queue for sending commands to the device firmware,
208 * and four transmit queues for data.
209 ***************************************************/
211 static int iwl_queue_space(const struct iwl_queue
*q
)
213 int s
= q
->last_used
- q
->first_empty
;
215 if (q
->last_used
> q
->first_empty
)
220 /* keep some reserve to not confuse empty and full situations */
227 /* XXX: n_bd must be power-of-two size */
228 static inline int iwl_queue_inc_wrap(int index
, int n_bd
)
230 return ++index
& (n_bd
- 1);
233 /* XXX: n_bd must be power-of-two size */
234 static inline int iwl_queue_dec_wrap(int index
, int n_bd
)
236 return --index
& (n_bd
- 1);
239 static inline int x2_queue_used(const struct iwl_queue
*q
, int i
)
241 return q
->first_empty
> q
->last_used
?
242 (i
>= q
->last_used
&& i
< q
->first_empty
) :
243 !(i
< q
->last_used
&& i
>= q
->first_empty
);
246 static inline u8
get_cmd_index(struct iwl_queue
*q
, u32 index
, int is_huge
)
251 return index
& (q
->n_window
- 1);
254 static int iwl_queue_init(struct iwl_priv
*priv
, struct iwl_queue
*q
,
255 int count
, int slots_num
, u32 id
)
258 q
->n_window
= slots_num
;
261 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
262 * and iwl_queue_dec_wrap are broken. */
263 BUG_ON(!is_power_of_2(count
));
265 /* slots_num must be power-of-two size, otherwise
266 * get_cmd_index is broken. */
267 BUG_ON(!is_power_of_2(slots_num
));
269 q
->low_mark
= q
->n_window
/ 4;
273 q
->high_mark
= q
->n_window
/ 8;
274 if (q
->high_mark
< 2)
277 q
->first_empty
= q
->last_used
= 0;
282 static int iwl_tx_queue_alloc(struct iwl_priv
*priv
,
283 struct iwl_tx_queue
*txq
, u32 id
)
285 struct pci_dev
*dev
= priv
->pci_dev
;
287 if (id
!= IWL_CMD_QUEUE_NUM
) {
288 txq
->txb
= kmalloc(sizeof(txq
->txb
[0]) *
289 TFD_QUEUE_SIZE_MAX
, GFP_KERNEL
);
291 IWL_ERROR("kmalloc for auxilary BD "
292 "structures failed\n");
298 txq
->bd
= pci_alloc_consistent(dev
,
299 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
,
303 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
304 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
);
320 int iwl_tx_queue_init(struct iwl_priv
*priv
,
321 struct iwl_tx_queue
*txq
, int slots_num
, u32 txq_id
)
323 struct pci_dev
*dev
= priv
->pci_dev
;
327 /* alocate command space + one big command for scan since scan
328 * command is very huge the system will not have two scan at the
330 len
= sizeof(struct iwl_cmd
) * slots_num
;
331 if (txq_id
== IWL_CMD_QUEUE_NUM
)
332 len
+= IWL_MAX_SCAN_SIZE
;
333 txq
->cmd
= pci_alloc_consistent(dev
, len
, &txq
->dma_addr_cmd
);
337 rc
= iwl_tx_queue_alloc(priv
, txq
, txq_id
);
339 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
343 txq
->need_update
= 0;
345 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
346 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
347 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX
& (TFD_QUEUE_SIZE_MAX
- 1));
348 iwl_queue_init(priv
, &txq
->q
, TFD_QUEUE_SIZE_MAX
, slots_num
, txq_id
);
350 iwl_hw_tx_queue_init(priv
, txq
);
356 * iwl_tx_queue_free - Deallocate DMA queue.
357 * @txq: Transmit queue to deallocate.
359 * Empty queue by removing and destroying all BD's.
360 * Free all buffers. txq itself is not freed.
363 void iwl_tx_queue_free(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
365 struct iwl_queue
*q
= &txq
->q
;
366 struct pci_dev
*dev
= priv
->pci_dev
;
372 /* first, empty all BD's */
373 for (; q
->first_empty
!= q
->last_used
;
374 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
))
375 iwl_hw_txq_free_tfd(priv
, txq
);
377 len
= sizeof(struct iwl_cmd
) * q
->n_window
;
378 if (q
->id
== IWL_CMD_QUEUE_NUM
)
379 len
+= IWL_MAX_SCAN_SIZE
;
381 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
383 /* free buffers belonging to queue itself */
385 pci_free_consistent(dev
, sizeof(struct iwl_tfd_frame
) *
386 txq
->q
.n_bd
, txq
->bd
, txq
->q
.dma_addr
);
393 /* 0 fill whole structure */
394 memset(txq
, 0, sizeof(*txq
));
397 const u8 BROADCAST_ADDR
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
399 /*************** STATION TABLE MANAGEMENT ****
401 * NOTE: This needs to be overhauled to better synchronize between
402 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
404 * mac80211 should also be examined to determine if sta_info is duplicating
405 * the functionality provided here
408 /**************************************************************/
410 static u8
iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
412 int index
= IWL_INVALID_STATION
;
416 spin_lock_irqsave(&priv
->sta_lock
, flags
);
420 else if (is_broadcast_ether_addr(addr
))
421 index
= priv
->hw_setting
.bcast_sta_id
;
423 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++)
424 if (priv
->stations
[i
].used
&&
425 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
431 if (unlikely(index
== IWL_INVALID_STATION
))
434 if (priv
->stations
[index
].used
) {
435 priv
->stations
[index
].used
= 0;
436 priv
->num_stations
--;
439 BUG_ON(priv
->num_stations
< 0);
442 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 /* Remove this station if it happens to already exist */
858 iwl_remove_station(priv
, addr
, is_ap
);
860 rc
= iwl_add_station(priv
, addr
, is_ap
, 0);
862 iwl4965_add_station(priv
, addr
, is_ap
);
868 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
869 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
870 * @channel: Any channel valid for the requested phymode
872 * In addition to setting the staging RXON, priv->phymode is also set.
874 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
875 * in the staging RXON flag structure based on the phymode
877 static int iwl_set_rxon_channel(struct iwl_priv
*priv
, u8 phymode
, u16 channel
)
879 if (!iwl_get_channel_info(priv
, phymode
, channel
)) {
880 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
885 if ((le16_to_cpu(priv
->staging_rxon
.channel
) == channel
) &&
886 (priv
->phymode
== phymode
))
889 priv
->staging_rxon
.channel
= cpu_to_le16(channel
);
890 if (phymode
== MODE_IEEE80211A
)
891 priv
->staging_rxon
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
893 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
895 priv
->phymode
= phymode
;
897 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel
, phymode
);
903 * iwl_check_rxon_cmd - validate RXON structure is valid
905 * NOTE: This is really only useful during development and can eventually
906 * be #ifdef'd out once the driver is stable and folks aren't actively
909 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd
*rxon
)
914 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
915 error
|= le32_to_cpu(rxon
->flags
&
916 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
917 RXON_FLG_RADAR_DETECT_MSK
));
919 IWL_WARNING("check 24G fields %d | %d\n",
922 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
923 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
925 IWL_WARNING("check 52 fields %d | %d\n",
927 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
929 IWL_WARNING("check 52 CCK %d | %d\n",
932 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
934 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
936 /* make sure basic rates 6Mbps and 1Mbps are supported */
937 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
938 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
940 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
942 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
944 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
946 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
947 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
949 IWL_WARNING("check CCK and short slot %d | %d\n",
952 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
953 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
955 IWL_WARNING("check CCK & auto detect %d | %d\n",
958 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
959 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
961 IWL_WARNING("check TGG and auto detect %d | %d\n",
965 IWL_WARNING("Tuning to channel %d\n",
966 le16_to_cpu(rxon
->channel
));
969 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
976 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
977 * @priv: staging_rxon is comapred to active_rxon
979 * If the RXON structure is changing sufficient to require a new
980 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
981 * to indicate a new tune is required.
983 static int iwl_full_rxon_required(struct iwl_priv
*priv
)
986 /* These items are only settable from the full RXON command */
987 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
988 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
989 priv
->active_rxon
.bssid_addr
) ||
990 compare_ether_addr(priv
->staging_rxon
.node_addr
,
991 priv
->active_rxon
.node_addr
) ||
992 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
993 priv
->active_rxon
.wlap_bssid_addr
) ||
994 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
995 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
996 (priv
->staging_rxon
.air_propagation
!=
997 priv
->active_rxon
.air_propagation
) ||
998 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
999 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
1000 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
1001 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
1002 (priv
->staging_rxon
.rx_chain
!= priv
->active_rxon
.rx_chain
) ||
1003 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
1006 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1007 * be updated with the RXON_ASSOC command -- however only some
1008 * flag transitions are allowed using RXON_ASSOC */
1010 /* Check if we are not switching bands */
1011 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
1012 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
1015 /* Check if we are switching association toggle */
1016 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
1017 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
1023 static int iwl_send_rxon_assoc(struct iwl_priv
*priv
)
1026 struct iwl_rx_packet
*res
= NULL
;
1027 struct iwl_rxon_assoc_cmd rxon_assoc
;
1028 struct iwl_host_cmd cmd
= {
1029 .id
= REPLY_RXON_ASSOC
,
1030 .len
= sizeof(rxon_assoc
),
1031 .meta
.flags
= CMD_WANT_SKB
,
1032 .data
= &rxon_assoc
,
1034 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1035 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1037 if ((rxon1
->flags
== rxon2
->flags
) &&
1038 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1039 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1040 (rxon1
->ofdm_ht_single_stream_basic_rates
==
1041 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
1042 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
1043 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
1044 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
1045 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1046 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1050 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1051 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1052 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1053 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1054 rxon_assoc
.reserved
= 0;
1055 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
1056 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
1057 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
1058 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
1059 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
1061 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1065 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1066 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1067 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1071 priv
->alloc_rxb_skb
--;
1072 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1078 * iwl_commit_rxon - commit staging_rxon to hardware
1080 * The RXON command in staging_rxon is commited to the hardware and
1081 * the active_rxon structure is updated with the new data. This
1082 * function correctly transitions out of the RXON_ASSOC_MSK state if
1083 * a HW tune is required based on the RXON structure changes.
1085 static int iwl_commit_rxon(struct iwl_priv
*priv
)
1087 /* cast away the const for active_rxon in this function */
1088 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1089 DECLARE_MAC_BUF(mac
);
1092 if (!iwl_is_alive(priv
))
1095 /* always get timestamp with Rx frame */
1096 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
1098 rc
= iwl_check_rxon_cmd(&priv
->staging_rxon
);
1100 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1104 /* If we don't need to send a full RXON, we can use
1105 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1106 * and other flags for the current radio configuration. */
1107 if (!iwl_full_rxon_required(priv
)) {
1108 rc
= iwl_send_rxon_assoc(priv
);
1110 IWL_ERROR("Error setting RXON_ASSOC "
1111 "configuration (%d).\n", rc
);
1115 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1120 /* station table will be cleared */
1121 priv
->assoc_station_added
= 0;
1123 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1124 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1125 if (!priv
->error_recovering
)
1126 priv
->start_calib
= 0;
1128 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1129 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1131 /* If we are currently associated and the new config requires
1132 * an RXON_ASSOC and the new config wants the associated mask enabled,
1133 * we must clear the associated from the active configuration
1134 * before we apply the new config */
1135 if (iwl_is_associated(priv
) &&
1136 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
1137 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1138 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1140 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1141 sizeof(struct iwl_rxon_cmd
),
1142 &priv
->active_rxon
);
1144 /* If the mask clearing failed then we set
1145 * active_rxon back to what it was previously */
1147 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1148 IWL_ERROR("Error clearing ASSOC_MSK on current "
1149 "configuration (%d).\n", rc
);
1153 /* The RXON bit toggling will have cleared out the
1154 * station table in the uCode, so blank it in the driver
1156 iwl_clear_stations_table(priv
);
1157 } else if (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) {
1158 /* When switching from non-associated to associated, the
1159 * uCode clears out the station table; so clear it in the
1161 iwl_clear_stations_table(priv
);
1164 IWL_DEBUG_INFO("Sending RXON\n"
1165 "* with%s RXON_FILTER_ASSOC_MSK\n"
1168 ((priv
->staging_rxon
.filter_flags
&
1169 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
1170 le16_to_cpu(priv
->staging_rxon
.channel
),
1171 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
1173 /* Apply the new configuration */
1174 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1175 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
1177 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
1181 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1182 if (!priv
->error_recovering
)
1183 priv
->start_calib
= 0;
1185 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
1186 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
1187 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1189 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1191 /* If we issue a new RXON command which required a tune then we must
1192 * send a new TXPOWER command or we won't be able to Tx any frames */
1193 rc
= iwl_hw_reg_send_txpower(priv
);
1195 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
1199 /* Add the broadcast address so we can send broadcast frames */
1200 if (iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0) ==
1201 IWL_INVALID_STATION
) {
1202 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1206 /* If we have set the ASSOC_MSK and we are in BSS mode then
1207 * add the IWL_AP_ID to the station rate table */
1208 if (iwl_is_associated(priv
) &&
1209 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
1210 if (iwl_rxon_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1)
1211 == IWL_INVALID_STATION
) {
1212 IWL_ERROR("Error adding AP address for transmit.\n");
1215 priv
->assoc_station_added
= 1;
1221 static int iwl_send_bt_config(struct iwl_priv
*priv
)
1223 struct iwl_bt_cmd bt_cmd
= {
1231 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1232 sizeof(struct iwl_bt_cmd
), &bt_cmd
);
1235 static int iwl_send_scan_abort(struct iwl_priv
*priv
)
1238 struct iwl_rx_packet
*res
;
1239 struct iwl_host_cmd cmd
= {
1240 .id
= REPLY_SCAN_ABORT_CMD
,
1241 .meta
.flags
= CMD_WANT_SKB
,
1244 /* If there isn't a scan actively going on in the hardware
1245 * then we are in between scan bands and not actually
1246 * actively scanning, so don't send the abort command */
1247 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1248 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1252 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1254 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1258 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1259 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
1260 /* The scan abort will return 1 for success or
1261 * 2 for "failure". A failure condition can be
1262 * due to simply not being in an active scan which
1263 * can occur if we send the scan abort before we
1264 * the microcode has notified us that a scan is
1266 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
1267 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1268 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
1271 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1276 static int iwl_card_state_sync_callback(struct iwl_priv
*priv
,
1277 struct iwl_cmd
*cmd
,
1278 struct sk_buff
*skb
)
1286 * Use: Sets the internal card state to enable, disable, or halt
1288 * When in the 'enable' state the card operates as normal.
1289 * When in the 'disable' state, the card enters into a low power mode.
1290 * When in the 'halt' state, the card is shut down and must be fully
1291 * restarted to come back on.
1293 static int iwl_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1295 struct iwl_host_cmd cmd
= {
1296 .id
= REPLY_CARD_STATE_CMD
,
1299 .meta
.flags
= meta_flag
,
1302 if (meta_flag
& CMD_ASYNC
)
1303 cmd
.meta
.u
.callback
= iwl_card_state_sync_callback
;
1305 return iwl_send_cmd(priv
, &cmd
);
1308 static int iwl_add_sta_sync_callback(struct iwl_priv
*priv
,
1309 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1311 struct iwl_rx_packet
*res
= NULL
;
1314 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1318 res
= (struct iwl_rx_packet
*)skb
->data
;
1319 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1320 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1325 switch (res
->u
.add_sta
.status
) {
1326 case ADD_STA_SUCCESS_MSK
:
1332 /* We didn't cache the SKB; let the caller free it */
1336 int iwl_send_add_station(struct iwl_priv
*priv
,
1337 struct iwl_addsta_cmd
*sta
, u8 flags
)
1339 struct iwl_rx_packet
*res
= NULL
;
1341 struct iwl_host_cmd cmd
= {
1342 .id
= REPLY_ADD_STA
,
1343 .len
= sizeof(struct iwl_addsta_cmd
),
1344 .meta
.flags
= flags
,
1348 if (flags
& CMD_ASYNC
)
1349 cmd
.meta
.u
.callback
= iwl_add_sta_sync_callback
;
1351 cmd
.meta
.flags
|= CMD_WANT_SKB
;
1353 rc
= iwl_send_cmd(priv
, &cmd
);
1355 if (rc
|| (flags
& CMD_ASYNC
))
1358 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1359 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1360 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1366 switch (res
->u
.add_sta
.status
) {
1367 case ADD_STA_SUCCESS_MSK
:
1368 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1372 IWL_WARNING("REPLY_ADD_STA failed\n");
1377 priv
->alloc_rxb_skb
--;
1378 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1383 static int iwl_update_sta_key_info(struct iwl_priv
*priv
,
1384 struct ieee80211_key_conf
*keyconf
,
1387 unsigned long flags
;
1388 __le16 key_flags
= 0;
1390 switch (keyconf
->alg
) {
1392 key_flags
|= STA_KEY_FLG_CCMP
;
1393 key_flags
|= cpu_to_le16(
1394 keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1395 key_flags
&= ~STA_KEY_FLG_INVALID
;
1403 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1404 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1405 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
1406 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
1409 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
1411 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
1412 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1413 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1415 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1417 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1418 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1422 static int iwl_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
1424 unsigned long flags
;
1426 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1427 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
1428 memset(&priv
->stations
[sta_id
].sta
.key
, 0, sizeof(struct iwl_keyinfo
));
1429 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
1430 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1431 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1432 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1434 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1435 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1439 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
1441 struct list_head
*element
;
1443 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1444 priv
->frames_count
);
1446 while (!list_empty(&priv
->free_frames
)) {
1447 element
= priv
->free_frames
.next
;
1449 kfree(list_entry(element
, struct iwl_frame
, list
));
1450 priv
->frames_count
--;
1453 if (priv
->frames_count
) {
1454 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1455 priv
->frames_count
);
1456 priv
->frames_count
= 0;
1460 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
1462 struct iwl_frame
*frame
;
1463 struct list_head
*element
;
1464 if (list_empty(&priv
->free_frames
)) {
1465 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1467 IWL_ERROR("Could not allocate frame!\n");
1471 priv
->frames_count
++;
1475 element
= priv
->free_frames
.next
;
1477 return list_entry(element
, struct iwl_frame
, list
);
1480 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
1482 memset(frame
, 0, sizeof(*frame
));
1483 list_add(&frame
->list
, &priv
->free_frames
);
1486 unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
1487 struct ieee80211_hdr
*hdr
,
1488 const u8
*dest
, int left
)
1491 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1492 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1493 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1496 if (priv
->ibss_beacon
->len
> left
)
1499 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1501 return priv
->ibss_beacon
->len
;
1504 int iwl_rate_index_from_plcp(int plcp
)
1508 if (plcp
& RATE_MCS_HT_MSK
) {
1511 if (i
>= IWL_RATE_MIMO_6M_PLCP
)
1512 i
= i
- IWL_RATE_MIMO_6M_PLCP
;
1514 i
+= IWL_FIRST_OFDM_RATE
;
1515 /* skip 9M not supported in ht*/
1516 if (i
>= IWL_RATE_9M_INDEX
)
1518 if ((i
>= IWL_FIRST_OFDM_RATE
) &&
1519 (i
<= IWL_LAST_OFDM_RATE
))
1522 for (i
= 0; i
< ARRAY_SIZE(iwl_rates
); i
++)
1523 if (iwl_rates
[i
].plcp
== (plcp
&0xFF))
1529 static u8
iwl_rate_get_lowest_plcp(int rate_mask
)
1533 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1534 i
= iwl_rates
[i
].next_ieee
) {
1535 if (rate_mask
& (1 << i
))
1536 return iwl_rates
[i
].plcp
;
1539 return IWL_RATE_INVALID
;
1542 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
1544 struct iwl_frame
*frame
;
1545 unsigned int frame_size
;
1549 frame
= iwl_get_free_frame(priv
);
1552 IWL_ERROR("Could not obtain free frame buffer for beacon "
1557 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1558 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
&
1560 if (rate
== IWL_INVALID_RATE
)
1561 rate
= IWL_RATE_6M_PLCP
;
1563 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1564 if (rate
== IWL_INVALID_RATE
)
1565 rate
= IWL_RATE_1M_PLCP
;
1568 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
1570 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1573 iwl_free_frame(priv
, frame
);
1578 /******************************************************************************
1580 * EEPROM related functions
1582 ******************************************************************************/
1584 static void get_eeprom_mac(struct iwl_priv
*priv
, u8
*mac
)
1586 memcpy(mac
, priv
->eeprom
.mac_address
, 6);
1590 * iwl_eeprom_init - read EEPROM contents
1592 * Load the EEPROM from adapter into priv->eeprom
1594 * NOTE: This routine uses the non-debug IO access functions.
1596 int iwl_eeprom_init(struct iwl_priv
*priv
)
1598 u16
*e
= (u16
*)&priv
->eeprom
;
1599 u32 gp
= iwl_read32(priv
, CSR_EEPROM_GP
);
1601 int sz
= sizeof(priv
->eeprom
);
1606 /* The EEPROM structure has several padding buffers within it
1607 * and when adding new EEPROM maps is subject to programmer errors
1608 * which may be very difficult to identify without explicitly
1609 * checking the resulting size of the eeprom map. */
1610 BUILD_BUG_ON(sizeof(priv
->eeprom
) != IWL_EEPROM_IMAGE_SIZE
);
1612 if ((gp
& CSR_EEPROM_GP_VALID_MSK
) == CSR_EEPROM_GP_BAD_SIGNATURE
) {
1613 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp
);
1617 rc
= iwl_eeprom_aqcuire_semaphore(priv
);
1619 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1623 /* eeprom is an array of 16bit values */
1624 for (addr
= 0; addr
< sz
; addr
+= sizeof(u16
)) {
1625 _iwl_write32(priv
, CSR_EEPROM_REG
, addr
<< 1);
1626 _iwl_clear_bit(priv
, CSR_EEPROM_REG
, CSR_EEPROM_REG_BIT_CMD
);
1628 for (i
= 0; i
< IWL_EEPROM_ACCESS_TIMEOUT
;
1629 i
+= IWL_EEPROM_ACCESS_DELAY
) {
1630 r
= _iwl_read_restricted(priv
, CSR_EEPROM_REG
);
1631 if (r
& CSR_EEPROM_REG_READ_VALID_MSK
)
1633 udelay(IWL_EEPROM_ACCESS_DELAY
);
1636 if (!(r
& CSR_EEPROM_REG_READ_VALID_MSK
)) {
1637 IWL_ERROR("Time out reading EEPROM[%d]", addr
);
1641 e
[addr
/ 2] = le16_to_cpu(r
>> 16);
1646 iwl_eeprom_release_semaphore(priv
);
1650 /******************************************************************************
1652 * Misc. internal state and helper functions
1654 ******************************************************************************/
1655 #ifdef CONFIG_IWLWIFI_DEBUG
1658 * iwl_report_frame - dump frame to syslog during debug sessions
1660 * hack this function to show different aspects of received frames,
1661 * including selective frame dumps.
1662 * group100 parameter selects whether to show 1 out of 100 good frames.
1664 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1665 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1666 * is 3945-specific and gives bad output for 4965. Need to split the
1667 * functionality, keep common stuff here.
1669 void iwl_report_frame(struct iwl_priv
*priv
,
1670 struct iwl_rx_packet
*pkt
,
1671 struct ieee80211_hdr
*header
, int group100
)
1674 u32 print_summary
= 0;
1675 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
1692 struct iwl_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
1693 struct iwl_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
1694 struct iwl_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
1695 u8
*data
= IWL_RX_DATA(pkt
);
1698 fc
= le16_to_cpu(header
->frame_control
);
1699 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
1702 channel
= le16_to_cpu(rx_hdr
->channel
);
1703 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
1704 rate_sym
= rx_hdr
->rate
;
1705 length
= le16_to_cpu(rx_hdr
->len
);
1707 /* end-of-frame status and timestamp */
1708 status
= le32_to_cpu(rx_end
->status
);
1709 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
1710 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
1711 tsf
= le64_to_cpu(rx_end
->timestamp
);
1713 /* signal statistics */
1714 rssi
= rx_stats
->rssi
;
1715 agc
= rx_stats
->agc
;
1716 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
1717 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
1719 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1721 /* if data frame is to us and all is good,
1722 * (optionally) print summary for only 1 out of every 100 */
1723 if (to_us
&& (fc
& ~IEEE80211_FCTL_PROTECTED
) ==
1724 (IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
1727 print_summary
= 1; /* print each frame */
1728 else if (priv
->framecnt_to_us
< 100) {
1729 priv
->framecnt_to_us
++;
1732 priv
->framecnt_to_us
= 0;
1737 /* print summary for all other frames */
1741 if (print_summary
) {
1746 title
= "100Frames";
1747 else if (fc
& IEEE80211_FCTL_RETRY
)
1749 else if (ieee80211_is_assoc_response(fc
))
1751 else if (ieee80211_is_reassoc_response(fc
))
1753 else if (ieee80211_is_probe_response(fc
)) {
1755 print_dump
= 1; /* dump frame contents */
1756 } else if (ieee80211_is_beacon(fc
)) {
1758 print_dump
= 1; /* dump frame contents */
1759 } else if (ieee80211_is_atim(fc
))
1761 else if (ieee80211_is_auth(fc
))
1763 else if (ieee80211_is_deauth(fc
))
1765 else if (ieee80211_is_disassoc(fc
))
1770 rate
= iwl_rate_index_from_plcp(rate_sym
);
1774 rate
= iwl_rates
[rate
].ieee
/ 2;
1776 /* print frame summary.
1777 * MAC addresses show just the last byte (for brevity),
1778 * but you can hack it to show more, if you'd like to. */
1780 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1781 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1782 title
, fc
, header
->addr1
[5],
1783 length
, rssi
, channel
, rate
);
1785 /* src/dst addresses assume managed mode */
1786 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1787 "src=0x%02x, rssi=%u, tim=%lu usec, "
1788 "phy=0x%02x, chnl=%d\n",
1789 title
, fc
, header
->addr1
[5],
1790 header
->addr3
[5], rssi
,
1791 tsf_low
- priv
->scan_start_tsf
,
1792 phy_flags
, channel
);
1796 iwl_print_hex_dump(IWL_DL_RX
, data
, length
);
1800 static void iwl_unset_hw_setting(struct iwl_priv
*priv
)
1802 if (priv
->hw_setting
.shared_virt
)
1803 pci_free_consistent(priv
->pci_dev
,
1804 sizeof(struct iwl_shared
),
1805 priv
->hw_setting
.shared_virt
,
1806 priv
->hw_setting
.shared_phys
);
1810 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1812 * return : set the bit for each supported rate insert in ie
1814 static u16
iwl_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1815 u16 basic_rate
, int max_count
)
1817 u16 ret_rates
= 0, bit
;
1823 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1824 if (bit
& supported_rate
) {
1826 rates
[*ie
] = iwl_rates
[i
].ieee
|
1827 ((bit
& basic_rate
) ? 0x80 : 0x00);
1829 if (*ie
>= max_count
)
1837 #ifdef CONFIG_IWLWIFI_HT
1838 void static iwl_set_ht_capab(struct ieee80211_hw
*hw
,
1839 struct ieee80211_ht_capability
*ht_cap
,
1844 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1846 static u16
iwl_fill_probe_req(struct iwl_priv
*priv
,
1847 struct ieee80211_mgmt
*frame
,
1848 int left
, int is_direct
)
1854 /* Make sure there is enough space for the probe request,
1855 * two mandatory IEs and the data */
1861 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1862 memcpy(frame
->da
, BROADCAST_ADDR
, ETH_ALEN
);
1863 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1864 memcpy(frame
->bssid
, BROADCAST_ADDR
, ETH_ALEN
);
1865 frame
->seq_ctrl
= 0;
1867 /* fill in our indirect SSID IE */
1874 pos
= &(frame
->u
.probe_req
.variable
[0]);
1875 *pos
++ = WLAN_EID_SSID
;
1878 /* fill in our direct SSID IE... */
1881 left
-= 2 + priv
->essid_len
;
1884 /* ... fill it in... */
1885 *pos
++ = WLAN_EID_SSID
;
1886 *pos
++ = priv
->essid_len
;
1887 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1888 pos
+= priv
->essid_len
;
1889 len
+= 2 + priv
->essid_len
;
1892 /* fill in supported rate */
1897 /* ... fill it in... */
1898 *pos
++ = WLAN_EID_SUPP_RATES
;
1900 ret_rates
= priv
->active_rate
= priv
->rates_mask
;
1901 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1903 iwl_supported_rate_to_ie(pos
, priv
->active_rate
,
1904 priv
->active_rate_basic
, left
);
1907 ret_rates
= ~ret_rates
& priv
->active_rate
;
1912 /* fill in supported extended rate */
1917 /* ... fill it in... */
1918 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1920 iwl_supported_rate_to_ie(pos
, ret_rates
, priv
->active_rate_basic
, left
);
1924 #ifdef CONFIG_IWLWIFI_HT
1925 if (is_direct
&& priv
->is_ht_enabled
) {
1926 u8 use_wide_chan
= 1;
1928 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
1931 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1932 *pos
++ = sizeof(struct ieee80211_ht_capability
);
1933 iwl_set_ht_capab(NULL
, (struct ieee80211_ht_capability
*)pos
,
1935 len
+= 2 + sizeof(struct ieee80211_ht_capability
);
1937 #endif /*CONFIG_IWLWIFI_HT */
1946 #ifdef CONFIG_IWLWIFI_QOS
1947 static int iwl_send_qos_params_command(struct iwl_priv
*priv
,
1948 struct iwl_qosparam_cmd
*qos
)
1951 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1952 sizeof(struct iwl_qosparam_cmd
), qos
);
1955 static void iwl_reset_qos(struct iwl_priv
*priv
)
1961 unsigned long flags
;
1964 spin_lock_irqsave(&priv
->lock
, flags
);
1965 priv
->qos_data
.qos_active
= 0;
1967 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) {
1968 if (priv
->qos_data
.qos_enable
)
1969 priv
->qos_data
.qos_active
= 1;
1970 if (!(priv
->active_rate
& 0xfff0)) {
1974 } else if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1975 if (priv
->qos_data
.qos_enable
)
1976 priv
->qos_data
.qos_active
= 1;
1977 } else if (!(priv
->staging_rxon
.flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
1982 if (priv
->qos_data
.qos_active
)
1985 priv
->qos_data
.def_qos_parm
.ac
[0].cw_min
= cpu_to_le16(cw_min
);
1986 priv
->qos_data
.def_qos_parm
.ac
[0].cw_max
= cpu_to_le16(cw_max
);
1987 priv
->qos_data
.def_qos_parm
.ac
[0].aifsn
= aifs
;
1988 priv
->qos_data
.def_qos_parm
.ac
[0].edca_txop
= 0;
1989 priv
->qos_data
.def_qos_parm
.ac
[0].reserved1
= 0;
1991 if (priv
->qos_data
.qos_active
) {
1993 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
= cpu_to_le16(cw_min
);
1994 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
= cpu_to_le16(cw_max
);
1995 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 7;
1996 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1997 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2000 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2001 cpu_to_le16((cw_min
+ 1) / 2 - 1);
2002 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2003 cpu_to_le16(cw_max
);
2004 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2006 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2009 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2011 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2014 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2015 cpu_to_le16((cw_min
+ 1) / 4 - 1);
2016 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2017 cpu_to_le16((cw_max
+ 1) / 2 - 1);
2018 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
2019 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2021 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2024 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
2027 for (i
= 1; i
< 4; i
++) {
2028 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
2029 cpu_to_le16(cw_min
);
2030 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
2031 cpu_to_le16(cw_max
);
2032 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= aifs
;
2033 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
2034 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
2037 IWL_DEBUG_QOS("set QoS to default \n");
2039 spin_unlock_irqrestore(&priv
->lock
, flags
);
2042 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
2044 unsigned long flags
;
2049 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2052 if (!priv
->qos_data
.qos_enable
)
2055 spin_lock_irqsave(&priv
->lock
, flags
);
2056 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
2058 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
2059 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
2060 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2061 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
2063 if (priv
->qos_data
.qos_active
)
2064 priv
->qos_data
.def_qos_parm
.qos_flags
|=
2065 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
2067 spin_unlock_irqrestore(&priv
->lock
, flags
);
2069 if (force
|| iwl_is_associated(priv
)) {
2070 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2071 priv
->qos_data
.qos_active
);
2073 iwl_send_qos_params_command(priv
,
2074 &(priv
->qos_data
.def_qos_parm
));
2078 #endif /* CONFIG_IWLWIFI_QOS */
2080 * Power management (not Tx power!) functions
2082 #define MSEC_TO_USEC 1024
2084 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2085 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2086 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2087 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2088 __constant_cpu_to_le32(X1), \
2089 __constant_cpu_to_le32(X2), \
2090 __constant_cpu_to_le32(X3), \
2091 __constant_cpu_to_le32(X4)}
2094 /* default power management (not Tx power) table values */
2096 static struct iwl_power_vec_entry range_0
[IWL_POWER_AC
] = {
2097 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2098 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2099 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2100 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2101 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2102 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2106 static struct iwl_power_vec_entry range_1
[IWL_POWER_AC
] = {
2107 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2108 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2109 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2110 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2111 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2112 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2113 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2114 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2115 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2116 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2119 int iwl_power_init_handle(struct iwl_priv
*priv
)
2122 struct iwl_power_mgr
*pow_data
;
2123 int size
= sizeof(struct iwl_power_vec_entry
) * IWL_POWER_AC
;
2126 IWL_DEBUG_POWER("Initialize power \n");
2128 pow_data
= &(priv
->power_data
);
2130 memset(pow_data
, 0, sizeof(*pow_data
));
2132 pow_data
->active_index
= IWL_POWER_RANGE_0
;
2133 pow_data
->dtim_val
= 0xffff;
2135 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
2136 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
2138 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
2142 struct iwl_powertable_cmd
*cmd
;
2144 IWL_DEBUG_POWER("adjust power command flags\n");
2146 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
2147 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
2150 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
2152 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
2158 static int iwl_update_power_cmd(struct iwl_priv
*priv
,
2159 struct iwl_powertable_cmd
*cmd
, u32 mode
)
2164 struct iwl_power_vec_entry
*range
;
2166 struct iwl_power_mgr
*pow_data
;
2168 if (mode
> IWL_POWER_INDEX_5
) {
2169 IWL_DEBUG_POWER("Error invalid power mode \n");
2172 pow_data
= &(priv
->power_data
);
2174 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
2175 range
= &pow_data
->pwr_range_0
[0];
2177 range
= &pow_data
->pwr_range_1
[1];
2179 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl_powertable_cmd
));
2181 #ifdef IWL_MAC80211_DISABLE
2182 if (priv
->assoc_network
!= NULL
) {
2183 unsigned long flags
;
2185 period
= priv
->assoc_network
->tim
.tim_period
;
2187 #endif /*IWL_MAC80211_DISABLE */
2188 skip
= range
[mode
].no_dtim
;
2197 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2199 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
2200 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
2201 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2204 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
2205 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
2206 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
2209 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
2210 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
2211 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
2212 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2213 le32_to_cpu(cmd
->sleep_interval
[0]),
2214 le32_to_cpu(cmd
->sleep_interval
[1]),
2215 le32_to_cpu(cmd
->sleep_interval
[2]),
2216 le32_to_cpu(cmd
->sleep_interval
[3]),
2217 le32_to_cpu(cmd
->sleep_interval
[4]));
2222 static int iwl_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
2224 u32 final_mode
= mode
;
2226 struct iwl_powertable_cmd cmd
;
2228 /* If on battery, set to 3,
2229 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2230 * else user level */
2232 case IWL_POWER_BATTERY
:
2233 final_mode
= IWL_POWER_INDEX_3
;
2236 final_mode
= IWL_POWER_MODE_CAM
;
2243 cmd
.keep_alive_beacons
= 0;
2245 iwl_update_power_cmd(priv
, &cmd
, final_mode
);
2247 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
2249 if (final_mode
== IWL_POWER_MODE_CAM
)
2250 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
2252 set_bit(STATUS_POWER_PMI
, &priv
->status
);
2257 int iwl_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2259 /* Filter incoming packets to determine if they are targeted toward
2260 * this network, discarding packets coming from ourselves */
2261 switch (priv
->iw_mode
) {
2262 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
2263 /* packets from our adapter are dropped (echo) */
2264 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
2266 /* {broad,multi}cast packets to our IBSS go through */
2267 if (is_multicast_ether_addr(header
->addr1
))
2268 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
2269 /* packets to our adapter go through */
2270 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2271 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
2272 /* packets from our adapter are dropped (echo) */
2273 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
2275 /* {broad,multi}cast packets to our BSS go through */
2276 if (is_multicast_ether_addr(header
->addr1
))
2277 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
2278 /* packets to our adapter go through */
2279 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2285 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2287 const char *iwl_get_tx_fail_reason(u32 status
)
2289 switch (status
& TX_STATUS_MSK
) {
2290 case TX_STATUS_SUCCESS
:
2292 TX_STATUS_ENTRY(SHORT_LIMIT
);
2293 TX_STATUS_ENTRY(LONG_LIMIT
);
2294 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
2295 TX_STATUS_ENTRY(MGMNT_ABORT
);
2296 TX_STATUS_ENTRY(NEXT_FRAG
);
2297 TX_STATUS_ENTRY(LIFE_EXPIRE
);
2298 TX_STATUS_ENTRY(DEST_PS
);
2299 TX_STATUS_ENTRY(ABORTED
);
2300 TX_STATUS_ENTRY(BT_RETRY
);
2301 TX_STATUS_ENTRY(STA_INVALID
);
2302 TX_STATUS_ENTRY(FRAG_DROPPED
);
2303 TX_STATUS_ENTRY(TID_DISABLE
);
2304 TX_STATUS_ENTRY(FRAME_FLUSHED
);
2305 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
2306 TX_STATUS_ENTRY(TX_LOCKED
);
2307 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
2314 * iwl_scan_cancel - Cancel any currently executing HW scan
2316 * NOTE: priv->mutex is not required before calling this function
2318 static int iwl_scan_cancel(struct iwl_priv
*priv
)
2320 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2321 clear_bit(STATUS_SCANNING
, &priv
->status
);
2325 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2326 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2327 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2328 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
2329 queue_work(priv
->workqueue
, &priv
->abort_scan
);
2332 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2334 return test_bit(STATUS_SCANNING
, &priv
->status
);
2341 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2342 * @ms: amount of time to wait (in milliseconds) for scan to abort
2344 * NOTE: priv->mutex must be held before calling this function
2346 static int iwl_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
2348 unsigned long now
= jiffies
;
2351 ret
= iwl_scan_cancel(priv
);
2353 mutex_unlock(&priv
->mutex
);
2354 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
2355 test_bit(STATUS_SCANNING
, &priv
->status
))
2357 mutex_lock(&priv
->mutex
);
2359 return test_bit(STATUS_SCANNING
, &priv
->status
);
2365 static void iwl_sequence_reset(struct iwl_priv
*priv
)
2367 /* Reset ieee stats */
2369 /* We don't reset the net_device_stats (ieee->stats) on
2372 priv
->last_seq_num
= -1;
2373 priv
->last_frag_num
= -1;
2374 priv
->last_packet_time
= 0;
2376 iwl_scan_cancel(priv
);
2379 #define MAX_UCODE_BEACON_INTERVAL 4096
2380 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2382 static __le16
iwl_adjust_beacon_interval(u16 beacon_val
)
2385 u16 beacon_factor
= 0;
2388 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
2389 / MAX_UCODE_BEACON_INTERVAL
;
2390 new_val
= beacon_val
/ beacon_factor
;
2392 return cpu_to_le16(new_val
);
2395 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
2397 u64 interval_tm_unit
;
2399 unsigned long flags
;
2400 struct ieee80211_conf
*conf
= NULL
;
2403 conf
= ieee80211_get_hw_conf(priv
->hw
);
2405 spin_lock_irqsave(&priv
->lock
, flags
);
2406 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp1
);
2407 priv
->rxon_timing
.timestamp
.dw
[0] = cpu_to_le32(priv
->timestamp0
);
2409 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
2411 tsf
= priv
->timestamp1
;
2412 tsf
= ((tsf
<< 32) | priv
->timestamp0
);
2414 beacon_int
= priv
->beacon_int
;
2415 spin_unlock_irqrestore(&priv
->lock
, flags
);
2417 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
2418 if (beacon_int
== 0) {
2419 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
2420 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
2422 priv
->rxon_timing
.beacon_interval
=
2423 cpu_to_le16(beacon_int
);
2424 priv
->rxon_timing
.beacon_interval
=
2425 iwl_adjust_beacon_interval(
2426 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2429 priv
->rxon_timing
.atim_window
= 0;
2431 priv
->rxon_timing
.beacon_interval
=
2432 iwl_adjust_beacon_interval(conf
->beacon_int
);
2433 /* TODO: we need to get atim_window from upper stack
2434 * for now we set to 0 */
2435 priv
->rxon_timing
.atim_window
= 0;
2439 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
2440 result
= do_div(tsf
, interval_tm_unit
);
2441 priv
->rxon_timing
.beacon_init_val
=
2442 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
2445 ("beacon interval %d beacon timer %d beacon tim %d\n",
2446 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
2447 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
2448 le16_to_cpu(priv
->rxon_timing
.atim_window
));
2451 static int iwl_scan_initiate(struct iwl_priv
*priv
)
2453 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
2454 IWL_ERROR("APs don't scan.\n");
2458 if (!iwl_is_ready_rf(priv
)) {
2459 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2463 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2464 IWL_DEBUG_SCAN("Scan already in progress.\n");
2468 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2469 IWL_DEBUG_SCAN("Scan request while abort pending. "
2474 IWL_DEBUG_INFO("Starting scan...\n");
2475 priv
->scan_bands
= 2;
2476 set_bit(STATUS_SCANNING
, &priv
->status
);
2477 priv
->scan_start
= jiffies
;
2478 priv
->scan_pass_start
= priv
->scan_start
;
2480 queue_work(priv
->workqueue
, &priv
->request_scan
);
2485 static int iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
2487 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
2490 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
2492 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
2497 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
)
2499 if (phymode
== MODE_IEEE80211A
) {
2500 priv
->staging_rxon
.flags
&=
2501 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
2502 | RXON_FLG_CCK_MSK
);
2503 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2505 /* Copied from iwl_bg_post_associate() */
2506 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2507 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2509 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2511 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
2512 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2514 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
2515 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
2516 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
2521 * initilize rxon structure with default values fromm eeprom
2523 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
)
2525 const struct iwl_channel_info
*ch_info
;
2527 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2529 switch (priv
->iw_mode
) {
2530 case IEEE80211_IF_TYPE_AP
:
2531 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2534 case IEEE80211_IF_TYPE_STA
:
2535 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2536 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2539 case IEEE80211_IF_TYPE_IBSS
:
2540 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2541 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2542 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2543 RXON_FILTER_ACCEPT_GRP_MSK
;
2546 case IEEE80211_IF_TYPE_MNTR
:
2547 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2548 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2549 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2554 /* TODO: Figure out when short_preamble would be set and cache from
2556 if (!hw_to_local(priv
->hw
)->short_preamble
)
2557 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2559 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2562 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
,
2563 le16_to_cpu(priv
->staging_rxon
.channel
));
2566 ch_info
= &priv
->channel_info
[0];
2569 * in some case A channels are all non IBSS
2570 * in this case force B/G channel
2572 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2573 !(is_channel_ibss(ch_info
)))
2574 ch_info
= &priv
->channel_info
[0];
2576 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2577 if (is_channel_a_band(ch_info
))
2578 priv
->phymode
= MODE_IEEE80211A
;
2580 priv
->phymode
= MODE_IEEE80211G
;
2582 iwl_set_flags_for_phymode(priv
, priv
->phymode
);
2584 priv
->staging_rxon
.ofdm_basic_rates
=
2585 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2586 priv
->staging_rxon
.cck_basic_rates
=
2587 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2589 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
2590 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
2591 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2592 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
2593 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
2594 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
2595 iwl4965_set_rxon_chain(priv
);
2598 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
2600 if (!iwl_is_ready_rf(priv
))
2603 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2604 const struct iwl_channel_info
*ch_info
;
2606 ch_info
= iwl_get_channel_info(priv
,
2608 le16_to_cpu(priv
->staging_rxon
.channel
));
2610 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2611 IWL_ERROR("channel %d not IBSS channel\n",
2612 le16_to_cpu(priv
->staging_rxon
.channel
));
2617 cancel_delayed_work(&priv
->scan_check
);
2618 if (iwl_scan_cancel_timeout(priv
, 100)) {
2619 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2620 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2624 priv
->iw_mode
= mode
;
2626 iwl_connection_init_rx_config(priv
);
2627 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2629 iwl_clear_stations_table(priv
);
2631 iwl_commit_rxon(priv
);
2636 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2637 struct ieee80211_tx_control
*ctl
,
2638 struct iwl_cmd
*cmd
,
2639 struct sk_buff
*skb_frag
,
2642 struct iwl_hw_key
*keyinfo
= &priv
->stations
[ctl
->key_idx
].keyinfo
;
2644 switch (keyinfo
->alg
) {
2646 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2647 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2648 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2653 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2656 memcpy(cmd
->cmd
.tx
.tkip_mic
.byte
, skb_frag
->tail
- 8,
2659 memset(cmd
->cmd
.tx
.tkip_mic
.byte
, 0, 8);
2664 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2665 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2667 if (keyinfo
->keylen
== 13)
2668 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2670 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2672 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2673 "with key %d\n", ctl
->key_idx
);
2677 IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2681 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2687 * handle build REPLY_TX command notification.
2689 static void iwl_build_tx_cmd_basic(struct iwl_priv
*priv
,
2690 struct iwl_cmd
*cmd
,
2691 struct ieee80211_tx_control
*ctrl
,
2692 struct ieee80211_hdr
*hdr
,
2693 int is_unicast
, u8 std_id
)
2696 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2697 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2699 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2700 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2701 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2702 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2703 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2704 if (ieee80211_is_probe_response(fc
) &&
2705 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2706 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2708 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2709 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2712 cmd
->cmd
.tx
.sta_id
= std_id
;
2713 if (ieee80211_get_morefrag(hdr
))
2714 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2716 qc
= ieee80211_get_qos_ctrl(hdr
);
2718 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2719 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2721 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2723 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2724 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2725 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2726 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2727 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2728 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2731 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2732 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2734 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2735 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2736 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2737 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2738 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2741 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2744 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2746 cmd
->cmd
.tx
.driver_txop
= 0;
2747 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2748 cmd
->cmd
.tx
.next_frame_len
= 0;
2751 static int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2754 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2755 DECLARE_MAC_BUF(mac
);
2757 /* If this frame is broadcast or not data then use the broadcast
2759 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2760 is_multicast_ether_addr(hdr
->addr1
))
2761 return priv
->hw_setting
.bcast_sta_id
;
2763 switch (priv
->iw_mode
) {
2765 /* If this frame is part of a BSS network (we're a station), then
2766 * we use the AP's station id */
2767 case IEEE80211_IF_TYPE_STA
:
2770 /* If we are an AP, then find the station, or use BCAST */
2771 case IEEE80211_IF_TYPE_AP
:
2772 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2773 if (sta_id
!= IWL_INVALID_STATION
)
2775 return priv
->hw_setting
.bcast_sta_id
;
2777 /* If this frame is part of a IBSS network, then we use the
2778 * target specific station id */
2779 case IEEE80211_IF_TYPE_IBSS
:
2780 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2781 if (sta_id
!= IWL_INVALID_STATION
)
2784 sta_id
= iwl_add_station(priv
, hdr
->addr1
, 0, CMD_ASYNC
);
2786 if (sta_id
!= IWL_INVALID_STATION
)
2789 IWL_DEBUG_DROP("Station %s not in station map. "
2790 "Defaulting to broadcast...\n",
2791 print_mac(mac
, hdr
->addr1
));
2792 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2793 return priv
->hw_setting
.bcast_sta_id
;
2796 IWL_WARNING("Unkown mode of operation: %d", priv
->iw_mode
);
2797 return priv
->hw_setting
.bcast_sta_id
;
2802 * start REPLY_TX command process
2804 static int iwl_tx_skb(struct iwl_priv
*priv
,
2805 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2807 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2808 struct iwl_tfd_frame
*tfd
;
2810 int txq_id
= ctl
->queue
;
2811 struct iwl_tx_queue
*txq
= NULL
;
2812 struct iwl_queue
*q
= NULL
;
2813 dma_addr_t phys_addr
;
2814 dma_addr_t txcmd_phys
;
2815 struct iwl_cmd
*out_cmd
= NULL
;
2816 u16 len
, idx
, len_org
;
2817 u8 id
, hdr_len
, unicast
;
2822 u8 wait_write_ptr
= 0;
2823 unsigned long flags
;
2826 spin_lock_irqsave(&priv
->lock
, flags
);
2827 if (iwl_is_rfkill(priv
)) {
2828 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2832 if (!priv
->interface_id
) {
2833 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2837 if ((ctl
->tx_rate
& 0xFF) == IWL_INVALID_RATE
) {
2838 IWL_ERROR("ERROR: No TX rate available.\n");
2842 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2845 fc
= le16_to_cpu(hdr
->frame_control
);
2847 #ifdef CONFIG_IWLWIFI_DEBUG
2848 if (ieee80211_is_auth(fc
))
2849 IWL_DEBUG_TX("Sending AUTH frame\n");
2850 else if (ieee80211_is_assoc_request(fc
))
2851 IWL_DEBUG_TX("Sending ASSOC frame\n");
2852 else if (ieee80211_is_reassoc_request(fc
))
2853 IWL_DEBUG_TX("Sending REASSOC frame\n");
2856 if (!iwl_is_associated(priv
) &&
2857 ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
)) {
2858 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2862 spin_unlock_irqrestore(&priv
->lock
, flags
);
2864 hdr_len
= ieee80211_get_hdrlen(fc
);
2865 sta_id
= iwl_get_sta_id(priv
, hdr
);
2866 if (sta_id
== IWL_INVALID_STATION
) {
2867 DECLARE_MAC_BUF(mac
);
2869 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2870 print_mac(mac
, hdr
->addr1
));
2874 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2876 qc
= ieee80211_get_qos_ctrl(hdr
);
2878 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2879 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2881 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2883 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2885 #ifdef CONFIG_IWLWIFI_HT
2886 #ifdef CONFIG_IWLWIFI_HT_AGG
2887 /* aggregation is on for this <sta,tid> */
2888 if (ctl
->flags
& IEEE80211_TXCTL_HT_MPDU_AGG
)
2889 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2890 #endif /* CONFIG_IWLWIFI_HT_AGG */
2891 #endif /* CONFIG_IWLWIFI_HT */
2893 txq
= &priv
->txq
[txq_id
];
2896 spin_lock_irqsave(&priv
->lock
, flags
);
2898 tfd
= &txq
->bd
[q
->first_empty
];
2899 memset(tfd
, 0, sizeof(*tfd
));
2900 control_flags
= (u32
*) tfd
;
2901 idx
= get_cmd_index(q
, q
->first_empty
, 0);
2903 memset(&(txq
->txb
[q
->first_empty
]), 0, sizeof(struct iwl_tx_info
));
2904 txq
->txb
[q
->first_empty
].skb
[0] = skb
;
2905 memcpy(&(txq
->txb
[q
->first_empty
].status
.control
),
2906 ctl
, sizeof(struct ieee80211_tx_control
));
2907 out_cmd
= &txq
->cmd
[idx
];
2908 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2909 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2910 out_cmd
->hdr
.cmd
= REPLY_TX
;
2911 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2912 INDEX_TO_SEQ(q
->first_empty
)));
2913 /* copy frags header */
2914 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2916 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2917 len
= priv
->hw_setting
.tx_cmd_len
+
2918 sizeof(struct iwl_cmd_header
) + hdr_len
;
2921 len
= (len
+ 3) & ~3;
2928 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2929 offsetof(struct iwl_cmd
, hdr
);
2931 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2933 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2934 iwl_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, 0);
2936 /* 802.11 null functions have no payload... */
2937 len
= skb
->len
- hdr_len
;
2939 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2940 len
, PCI_DMA_TODEVICE
);
2941 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2945 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2947 len
= (u16
)skb
->len
;
2948 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2950 /* TODO need this for burst mode later on */
2951 iwl_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2953 /* set is_hcca to 0; it probably will never be implemented */
2954 iwl_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2956 iwl4965_tx_cmd(priv
, out_cmd
, sta_id
, txcmd_phys
,
2957 hdr
, hdr_len
, ctl
, NULL
);
2959 if (!ieee80211_get_morefrag(hdr
)) {
2960 txq
->need_update
= 1;
2962 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2963 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2967 txq
->need_update
= 0;
2970 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2971 sizeof(out_cmd
->cmd
.tx
));
2973 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2974 ieee80211_get_hdrlen(fc
));
2976 iwl4965_tx_queue_update_wr_ptr(priv
, txq
, len
);
2978 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, q
->n_bd
);
2979 rc
= iwl_tx_queue_update_write_ptr(priv
, txq
);
2980 spin_unlock_irqrestore(&priv
->lock
, flags
);
2985 if ((iwl_queue_space(q
) < q
->high_mark
)
2986 && priv
->mac80211_registered
) {
2987 if (wait_write_ptr
) {
2988 spin_lock_irqsave(&priv
->lock
, flags
);
2989 txq
->need_update
= 1;
2990 iwl_tx_queue_update_write_ptr(priv
, txq
);
2991 spin_unlock_irqrestore(&priv
->lock
, flags
);
2994 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
3000 spin_unlock_irqrestore(&priv
->lock
, flags
);
3005 static void iwl_set_rate(struct iwl_priv
*priv
)
3007 const struct ieee80211_hw_mode
*hw
= NULL
;
3008 struct ieee80211_rate
*rate
;
3011 hw
= iwl_get_hw_mode(priv
, priv
->phymode
);
3013 priv
->active_rate
= 0;
3014 priv
->active_rate_basic
= 0;
3016 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3017 hw
->mode
== MODE_IEEE80211A
?
3018 'a' : ((hw
->mode
== MODE_IEEE80211B
) ? 'b' : 'g'));
3020 for (i
= 0; i
< hw
->num_rates
; i
++) {
3021 rate
= &(hw
->rates
[i
]);
3022 if ((rate
->val
< IWL_RATE_COUNT
) &&
3023 (rate
->flags
& IEEE80211_RATE_SUPPORTED
)) {
3024 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3025 rate
->val
, iwl_rates
[rate
->val
].plcp
,
3026 (rate
->flags
& IEEE80211_RATE_BASIC
) ?
3028 priv
->active_rate
|= (1 << rate
->val
);
3029 if (rate
->flags
& IEEE80211_RATE_BASIC
)
3030 priv
->active_rate_basic
|= (1 << rate
->val
);
3032 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3033 rate
->val
, iwl_rates
[rate
->val
].plcp
);
3036 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3037 priv
->active_rate
, priv
->active_rate_basic
);
3040 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3041 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3044 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
3045 priv
->staging_rxon
.cck_basic_rates
=
3046 ((priv
->active_rate_basic
&
3047 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
3049 priv
->staging_rxon
.cck_basic_rates
=
3050 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
3052 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
3053 priv
->staging_rxon
.ofdm_basic_rates
=
3054 ((priv
->active_rate_basic
&
3055 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
3056 IWL_FIRST_OFDM_RATE
) & 0xFF;
3058 priv
->staging_rxon
.ofdm_basic_rates
=
3059 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
3062 static void iwl_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
3064 unsigned long flags
;
3066 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
3069 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3070 disable_radio
? "OFF" : "ON");
3072 if (disable_radio
) {
3073 iwl_scan_cancel(priv
);
3074 /* FIXME: This is a workaround for AP */
3075 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
3076 spin_lock_irqsave(&priv
->lock
, flags
);
3077 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3078 CSR_UCODE_SW_BIT_RFKILL
);
3079 spin_unlock_irqrestore(&priv
->lock
, flags
);
3080 iwl_send_card_state(priv
, CARD_STATE_CMD_DISABLE
, 0);
3081 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3086 spin_lock_irqsave(&priv
->lock
, flags
);
3087 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
3089 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3090 spin_unlock_irqrestore(&priv
->lock
, flags
);
3095 spin_lock_irqsave(&priv
->lock
, flags
);
3096 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3097 if (!iwl_grab_restricted_access(priv
))
3098 iwl_release_restricted_access(priv
);
3099 spin_unlock_irqrestore(&priv
->lock
, flags
);
3101 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
3102 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3103 "disabled by HW switch\n");
3107 queue_work(priv
->workqueue
, &priv
->restart
);
3111 void iwl_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
3112 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
3115 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
3117 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
3120 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
3123 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
3124 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3125 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3126 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3127 RX_RES_STATUS_BAD_ICV_MIC
)
3128 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
3129 case RX_RES_STATUS_SEC_TYPE_WEP
:
3130 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3131 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3132 RX_RES_STATUS_DECRYPT_OK
) {
3133 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3134 stats
->flag
|= RX_FLAG_DECRYPTED
;
3143 void iwl_handle_data_packet_monitor(struct iwl_priv
*priv
,
3144 struct iwl_rx_mem_buffer
*rxb
,
3145 void *data
, short len
,
3146 struct ieee80211_rx_status
*stats
,
3149 struct iwl_rt_rx_hdr
*iwl_rt
;
3151 /* First cache any information we need before we overwrite
3152 * the information provided in the skb from the hardware */
3153 s8 signal
= stats
->ssi
;
3155 int rate
= stats
->rate
;
3156 u64 tsf
= stats
->mactime
;
3157 __le16 phy_flags_hw
= cpu_to_le16(phy_flags
);
3159 /* We received data from the HW, so stop the watchdog */
3160 if (len
> IWL_RX_BUF_SIZE
- sizeof(*iwl_rt
)) {
3161 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3165 /* copy the frame data to write after where the radiotap header goes */
3166 iwl_rt
= (void *)rxb
->skb
->data
;
3167 memmove(iwl_rt
->payload
, data
, len
);
3169 iwl_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3170 iwl_rt
->rt_hdr
.it_pad
= 0; /* always good to zero */
3172 /* total header + data */
3173 iwl_rt
->rt_hdr
.it_len
= cpu_to_le16(sizeof(*iwl_rt
));
3175 /* Set the size of the skb to the size of the frame */
3176 skb_put(rxb
->skb
, sizeof(*iwl_rt
) + len
);
3178 /* Big bitfield of all the fields we provide in radiotap */
3179 iwl_rt
->rt_hdr
.it_present
=
3180 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3181 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3182 (1 << IEEE80211_RADIOTAP_RATE
) |
3183 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3184 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3185 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3186 (1 << IEEE80211_RADIOTAP_ANTENNA
));
3188 /* Zero the flags, we'll add to them as we go */
3189 iwl_rt
->rt_flags
= 0;
3191 iwl_rt
->rt_tsf
= cpu_to_le64(tsf
);
3193 /* Convert to dBm */
3194 iwl_rt
->rt_dbmsignal
= signal
;
3195 iwl_rt
->rt_dbmnoise
= noise
;
3197 /* Convert the channel frequency and set the flags */
3198 iwl_rt
->rt_channelMHz
= cpu_to_le16(stats
->freq
);
3199 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3200 iwl_rt
->rt_chbitmask
=
3201 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_5GHZ
));
3202 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3203 iwl_rt
->rt_chbitmask
=
3204 cpu_to_le16((IEEE80211_CHAN_CCK
| IEEE80211_CHAN_2GHZ
));
3206 iwl_rt
->rt_chbitmask
=
3207 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_2GHZ
));
3209 rate
= iwl_rate_index_from_plcp(rate
);
3211 iwl_rt
->rt_rate
= 0;
3213 iwl_rt
->rt_rate
= iwl_rates
[rate
].ieee
;
3215 /* antenna number */
3216 iwl_rt
->rt_antenna
=
3217 le16_to_cpu(phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
3219 /* set the preamble flag if we have it */
3220 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3221 iwl_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3223 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb
->skb
->len
);
3225 stats
->flag
|= RX_FLAG_RADIOTAP
;
3226 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3231 #define IWL_PACKET_RETRY_TIME HZ
3233 int is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
3235 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
3236 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
3237 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
3238 u16
*last_seq
, *last_frag
;
3239 unsigned long *last_time
;
3241 switch (priv
->iw_mode
) {
3242 case IEEE80211_IF_TYPE_IBSS
:{
3243 struct list_head
*p
;
3244 struct iwl_ibss_seq
*entry
= NULL
;
3245 u8
*mac
= header
->addr2
;
3246 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
3248 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
3250 list_entry(p
, struct iwl_ibss_seq
, list
);
3251 if (!compare_ether_addr(entry
->mac
, mac
))
3254 if (p
== &priv
->ibss_mac_hash
[index
]) {
3255 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
3258 ("Cannot malloc new mac entry\n");
3261 memcpy(entry
->mac
, mac
, ETH_ALEN
);
3262 entry
->seq_num
= seq
;
3263 entry
->frag_num
= frag
;
3264 entry
->packet_time
= jiffies
;
3265 list_add(&entry
->list
,
3266 &priv
->ibss_mac_hash
[index
]);
3269 last_seq
= &entry
->seq_num
;
3270 last_frag
= &entry
->frag_num
;
3271 last_time
= &entry
->packet_time
;
3274 case IEEE80211_IF_TYPE_STA
:
3275 last_seq
= &priv
->last_seq_num
;
3276 last_frag
= &priv
->last_frag_num
;
3277 last_time
= &priv
->last_packet_time
;
3282 if ((*last_seq
== seq
) &&
3283 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
3284 if (*last_frag
== frag
)
3286 if (*last_frag
+ 1 != frag
)
3287 /* out-of-order fragment */
3293 *last_time
= jiffies
;
3300 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3302 #include "iwl-spectrum.h"
3304 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3305 #define BEACON_TIME_MASK_HIGH 0xFF000000
3306 #define TIME_UNIT 1024
3309 * extended beacon time format
3310 * time in usec will be changed into a 32-bit value in 8:24 format
3311 * the high 1 byte is the beacon counts
3312 * the lower 3 bytes is the time in usec within one beacon interval
3315 static u32
iwl_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
3319 u32 interval
= beacon_interval
* 1024;
3321 if (!interval
|| !usec
)
3324 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
3325 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
3327 return (quot
<< 24) + rem
;
3330 /* base is usually what we get from ucode with each received frame,
3331 * the same as HW timer counter counting down
3334 static __le32
iwl_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
3336 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
3337 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
3338 u32 interval
= beacon_interval
* TIME_UNIT
;
3339 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
3340 (addon
& BEACON_TIME_MASK_HIGH
);
3342 if (base_low
> addon_low
)
3343 res
+= base_low
- addon_low
;
3344 else if (base_low
< addon_low
) {
3345 res
+= interval
+ base_low
- addon_low
;
3350 return cpu_to_le32(res
);
3353 static int iwl_get_measurement(struct iwl_priv
*priv
,
3354 struct ieee80211_measurement_params
*params
,
3357 struct iwl_spectrum_cmd spectrum
;
3358 struct iwl_rx_packet
*res
;
3359 struct iwl_host_cmd cmd
= {
3360 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
3361 .data
= (void *)&spectrum
,
3362 .meta
.flags
= CMD_WANT_SKB
,
3364 u32 add_time
= le64_to_cpu(params
->start_time
);
3366 int spectrum_resp_status
;
3367 int duration
= le16_to_cpu(params
->duration
);
3369 if (iwl_is_associated(priv
))
3371 iwl_usecs_to_beacons(
3372 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
3373 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3375 memset(&spectrum
, 0, sizeof(spectrum
));
3377 spectrum
.channel_count
= cpu_to_le16(1);
3379 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
3380 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
3381 cmd
.len
= sizeof(spectrum
);
3382 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
3384 if (iwl_is_associated(priv
))
3385 spectrum
.start_time
=
3386 iwl_add_beacon_time(priv
->last_beacon_time
,
3388 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3390 spectrum
.start_time
= 0;
3392 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
3393 spectrum
.channels
[0].channel
= params
->channel
;
3394 spectrum
.channels
[0].type
= type
;
3395 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
3396 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
3397 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
3399 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3403 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
3404 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
3405 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3409 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
3410 switch (spectrum_resp_status
) {
3411 case 0: /* Command will be handled */
3412 if (res
->u
.spectrum
.id
!= 0xff) {
3414 ("Replaced existing measurement: %d\n",
3415 res
->u
.spectrum
.id
);
3416 priv
->measurement_status
&= ~MEASUREMENT_READY
;
3418 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
3422 case 1: /* Command will not be handled */
3427 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
3433 static void iwl_txstatus_to_ieee(struct iwl_priv
*priv
,
3434 struct iwl_tx_info
*tx_sta
)
3437 tx_sta
->status
.ack_signal
= 0;
3438 tx_sta
->status
.excessive_retries
= 0;
3439 tx_sta
->status
.queue_length
= 0;
3440 tx_sta
->status
.queue_number
= 0;
3443 ieee80211_tx_status_irqsafe(priv
->hw
,
3444 tx_sta
->skb
[0], &(tx_sta
->status
));
3446 ieee80211_tx_status(priv
->hw
,
3447 tx_sta
->skb
[0], &(tx_sta
->status
));
3449 tx_sta
->skb
[0] = NULL
;
3453 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3455 * When FW advances 'R' index, all entries between old and
3456 * new 'R' index need to be reclaimed. As result, some free space
3457 * forms. If there is enough free space (> low mark), wake Tx queue.
3459 int iwl_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
3461 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3462 struct iwl_queue
*q
= &txq
->q
;
3465 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
3466 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3467 "is out of range [0-%d] %d %d.\n", txq_id
,
3468 index
, q
->n_bd
, q
->first_empty
, q
->last_used
);
3472 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
3473 q
->last_used
!= index
;
3474 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
)) {
3475 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
3476 iwl_txstatus_to_ieee(priv
,
3477 &(txq
->txb
[txq
->q
.last_used
]));
3478 iwl_hw_txq_free_tfd(priv
, txq
);
3479 } else if (nfreed
> 1) {
3480 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
3481 q
->first_empty
, q
->last_used
);
3482 queue_work(priv
->workqueue
, &priv
->restart
);
3487 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
3488 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
3489 priv
->mac80211_registered
)
3490 ieee80211_wake_queue(priv
->hw
, txq_id
);
3496 static int iwl_is_tx_success(u32 status
)
3498 status
&= TX_STATUS_MSK
;
3499 return (status
== TX_STATUS_SUCCESS
)
3500 || (status
== TX_STATUS_DIRECT_DONE
);
3503 /******************************************************************************
3505 * Generic RX handler implementations
3507 ******************************************************************************/
3508 #ifdef CONFIG_IWLWIFI_HT
3509 #ifdef CONFIG_IWLWIFI_HT_AGG
3511 static inline int iwl_get_ra_sta_id(struct iwl_priv
*priv
,
3512 struct ieee80211_hdr
*hdr
)
3514 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
3517 u8
*da
= ieee80211_get_DA(hdr
);
3518 return iwl_hw_find_station(priv
, da
);
3522 static struct ieee80211_hdr
*iwl_tx_queue_get_hdr(
3523 struct iwl_priv
*priv
, int txq_id
, int idx
)
3525 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
3526 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
3527 txb
[idx
].skb
[0]->data
;
3531 static inline u32
iwl_get_scd_ssn(struct iwl_tx_resp
*tx_resp
)
3533 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
3534 tx_resp
->frame_count
);
3535 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
3538 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
3539 struct iwl_ht_agg
*agg
,
3540 struct iwl_tx_resp
*tx_resp
,
3544 __le32
*frame_status
= &tx_resp
->status
;
3545 struct ieee80211_tx_status
*tx_status
= NULL
;
3546 struct ieee80211_hdr
*hdr
= NULL
;
3551 if (agg
->wait_for_ba
)
3552 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3554 agg
->frame_count
= tx_resp
->frame_count
;
3555 agg
->start_idx
= start_idx
;
3556 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3557 agg
->bitmap0
= agg
->bitmap1
= 0;
3559 if (agg
->frame_count
== 1) {
3560 struct iwl_tx_queue
*txq
;
3561 status
= le32_to_cpu(frame_status
[0]);
3563 txq_id
= agg
->txq_id
;
3564 txq
= &priv
->txq
[txq_id
];
3565 /* FIXME: code repetition */
3566 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3567 agg
->frame_count
, agg
->start_idx
);
3569 tx_status
= &(priv
->txq
[txq_id
].txb
[txq
->q
.last_used
].status
);
3570 tx_status
->retry_count
= tx_resp
->failure_frame
;
3571 tx_status
->queue_number
= status
& 0xff;
3572 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3573 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3575 tx_status
->flags
= iwl_is_tx_success(status
)?
3576 IEEE80211_TX_STATUS_ACK
: 0;
3577 tx_status
->control
.tx_rate
=
3578 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3579 /* FIXME: code repetition end */
3581 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3582 status
& 0xff, tx_resp
->failure_frame
);
3583 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3584 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
3586 agg
->wait_for_ba
= 0;
3589 int start
= agg
->start_idx
;
3591 for (i
= 0; i
< agg
->frame_count
; i
++) {
3593 status
= le32_to_cpu(frame_status
[i
]);
3595 idx
= SEQ_TO_INDEX(seq
);
3596 txq_id
= SEQ_TO_QUEUE(seq
);
3598 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
3599 AGG_TX_STATE_ABORT_MSK
))
3602 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3603 agg
->frame_count
, txq_id
, idx
);
3605 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
3607 sc
= le16_to_cpu(hdr
->seq_ctrl
);
3608 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
3609 IWL_ERROR("BUG_ON idx doesn't match seq control"
3610 " idx=%d, seq_idx=%d, seq=%d\n",
3616 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3617 i
, idx
, SEQ_TO_SN(sc
));
3621 sh
= (start
- idx
) + 0xff;
3622 bitmap
= bitmap
<< sh
;
3625 } else if (sh
< -64)
3626 sh
= 0xff - (start
- idx
);
3630 bitmap
= bitmap
<< sh
;
3633 bitmap
|= (1 << sh
);
3634 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3635 start
, (u32
)(bitmap
& 0xFFFFFFFF));
3638 agg
->bitmap0
= bitmap
& 0xFFFFFFFF;
3639 agg
->bitmap1
= bitmap
>> 32;
3640 agg
->start_idx
= start
;
3641 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3642 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3643 agg
->frame_count
, agg
->start_idx
,
3647 agg
->wait_for_ba
= 1;
3654 static void iwl_rx_reply_tx(struct iwl_priv
*priv
,
3655 struct iwl_rx_mem_buffer
*rxb
)
3657 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3658 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3659 int txq_id
= SEQ_TO_QUEUE(sequence
);
3660 int index
= SEQ_TO_INDEX(sequence
);
3661 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3662 struct ieee80211_tx_status
*tx_status
;
3663 struct iwl_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3664 u32 status
= le32_to_cpu(tx_resp
->status
);
3665 #ifdef CONFIG_IWLWIFI_HT
3666 #ifdef CONFIG_IWLWIFI_HT_AGG
3671 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3672 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3673 "is out of range [0-%d] %d %d\n", txq_id
,
3674 index
, txq
->q
.n_bd
, txq
->q
.first_empty
,
3679 #ifdef CONFIG_IWLWIFI_HT
3680 #ifdef CONFIG_IWLWIFI_HT_AGG
3681 if (txq
->sched_retry
) {
3682 const u32 scd_ssn
= iwl_get_scd_ssn(tx_resp
);
3683 struct ieee80211_hdr
*hdr
=
3684 iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
3685 struct iwl_ht_agg
*agg
= NULL
;
3686 __le16
*qc
= ieee80211_get_qos_ctrl(hdr
);
3689 IWL_ERROR("BUG_ON qc is null!!!!\n");
3693 tid
= le16_to_cpu(*qc
) & 0xf;
3695 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
3696 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
3697 IWL_ERROR("Station not known for\n");
3701 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
3703 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, index
);
3705 if ((tx_resp
->frame_count
== 1) &&
3706 !iwl_is_tx_success(status
)) {
3707 /* TODO: send BAR */
3710 if ((txq
->q
.last_used
!= (scd_ssn
& 0xff))) {
3711 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
3712 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3713 "%d index %d\n", scd_ssn
, index
);
3714 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3717 #endif /* CONFIG_IWLWIFI_HT_AGG */
3718 #endif /* CONFIG_IWLWIFI_HT */
3719 tx_status
= &(txq
->txb
[txq
->q
.last_used
].status
);
3721 tx_status
->retry_count
= tx_resp
->failure_frame
;
3722 tx_status
->queue_number
= status
;
3723 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3724 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3727 iwl_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3729 tx_status
->control
.tx_rate
=
3730 iwl_hw_get_rate_n_flags(tx_resp
->rate_n_flags
);
3732 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3733 "retries %d\n", txq_id
, iwl_get_tx_fail_reason(status
),
3734 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
3735 tx_resp
->failure_frame
);
3737 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3739 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3740 #ifdef CONFIG_IWLWIFI_HT
3741 #ifdef CONFIG_IWLWIFI_HT_AGG
3743 #endif /* CONFIG_IWLWIFI_HT_AGG */
3744 #endif /* CONFIG_IWLWIFI_HT */
3746 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3747 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3751 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
3752 struct iwl_rx_mem_buffer
*rxb
)
3754 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3755 struct iwl_alive_resp
*palive
;
3756 struct delayed_work
*pwork
;
3758 palive
= &pkt
->u
.alive_frame
;
3760 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3762 palive
->is_valid
, palive
->ver_type
,
3763 palive
->ver_subtype
);
3765 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3766 IWL_DEBUG_INFO("Initialization Alive received.\n");
3767 memcpy(&priv
->card_alive_init
,
3768 &pkt
->u
.alive_frame
,
3769 sizeof(struct iwl_init_alive_resp
));
3770 pwork
= &priv
->init_alive_start
;
3772 IWL_DEBUG_INFO("Runtime Alive received.\n");
3773 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3774 sizeof(struct iwl_alive_resp
));
3775 pwork
= &priv
->alive_start
;
3778 /* We delay the ALIVE response by 5ms to
3779 * give the HW RF Kill time to activate... */
3780 if (palive
->is_valid
== UCODE_VALID_OK
)
3781 queue_delayed_work(priv
->workqueue
, pwork
,
3782 msecs_to_jiffies(5));
3784 IWL_WARNING("uCode did not respond OK.\n");
3787 static void iwl_rx_reply_add_sta(struct iwl_priv
*priv
,
3788 struct iwl_rx_mem_buffer
*rxb
)
3790 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3792 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3796 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
3797 struct iwl_rx_mem_buffer
*rxb
)
3799 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3801 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3802 "seq 0x%04X ser 0x%08X\n",
3803 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3804 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3805 pkt
->u
.err_resp
.cmd_id
,
3806 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3807 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3810 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3812 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3814 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3815 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3816 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3817 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3818 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3819 rxon
->channel
= csa
->channel
;
3820 priv
->staging_rxon
.channel
= csa
->channel
;
3823 static void iwl_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3824 struct iwl_rx_mem_buffer
*rxb
)
3826 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3827 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3828 struct iwl_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3830 if (!report
->state
) {
3831 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3832 "Spectrum Measure Notification: Start\n");
3836 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3837 priv
->measurement_status
|= MEASUREMENT_READY
;
3841 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3842 struct iwl_rx_mem_buffer
*rxb
)
3844 #ifdef CONFIG_IWLWIFI_DEBUG
3845 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3846 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3847 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3848 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3852 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3853 struct iwl_rx_mem_buffer
*rxb
)
3855 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3856 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3857 "notification for %s:\n",
3858 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3859 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3862 static void iwl_bg_beacon_update(struct work_struct
*work
)
3864 struct iwl_priv
*priv
=
3865 container_of(work
, struct iwl_priv
, beacon_update
);
3866 struct sk_buff
*beacon
;
3868 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3869 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->interface_id
, NULL
);
3872 IWL_ERROR("update beacon failed\n");
3876 mutex_lock(&priv
->mutex
);
3877 /* new beacon skb is allocated every time; dispose previous.*/
3878 if (priv
->ibss_beacon
)
3879 dev_kfree_skb(priv
->ibss_beacon
);
3881 priv
->ibss_beacon
= beacon
;
3882 mutex_unlock(&priv
->mutex
);
3884 iwl_send_beacon_cmd(priv
);
3887 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
3888 struct iwl_rx_mem_buffer
*rxb
)
3890 #ifdef CONFIG_IWLWIFI_DEBUG
3891 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3892 struct iwl_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3893 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3895 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3896 "tsf %d %d rate %d\n",
3897 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3898 beacon
->beacon_notify_hdr
.failure_frame
,
3899 le32_to_cpu(beacon
->ibss_mgr_status
),
3900 le32_to_cpu(beacon
->high_tsf
),
3901 le32_to_cpu(beacon
->low_tsf
), rate
);
3904 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3905 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3906 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3909 /* Service response to REPLY_SCAN_CMD (0x80) */
3910 static void iwl_rx_reply_scan(struct iwl_priv
*priv
,
3911 struct iwl_rx_mem_buffer
*rxb
)
3913 #ifdef CONFIG_IWLWIFI_DEBUG
3914 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3915 struct iwl_scanreq_notification
*notif
=
3916 (struct iwl_scanreq_notification
*)pkt
->u
.raw
;
3918 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3922 /* Service SCAN_START_NOTIFICATION (0x82) */
3923 static void iwl_rx_scan_start_notif(struct iwl_priv
*priv
,
3924 struct iwl_rx_mem_buffer
*rxb
)
3926 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3927 struct iwl_scanstart_notification
*notif
=
3928 (struct iwl_scanstart_notification
*)pkt
->u
.raw
;
3929 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3930 IWL_DEBUG_SCAN("Scan start: "
3932 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3934 notif
->band
? "bg" : "a",
3936 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3939 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3940 static void iwl_rx_scan_results_notif(struct iwl_priv
*priv
,
3941 struct iwl_rx_mem_buffer
*rxb
)
3943 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3944 struct iwl_scanresults_notification
*notif
=
3945 (struct iwl_scanresults_notification
*)pkt
->u
.raw
;
3947 IWL_DEBUG_SCAN("Scan ch.res: "
3949 "(TSF: 0x%08X:%08X) - %d "
3950 "elapsed=%lu usec (%dms since last)\n",
3952 notif
->band
? "bg" : "a",
3953 le32_to_cpu(notif
->tsf_high
),
3954 le32_to_cpu(notif
->tsf_low
),
3955 le32_to_cpu(notif
->statistics
[0]),
3956 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3957 jiffies_to_msecs(elapsed_jiffies
3958 (priv
->last_scan_jiffies
, jiffies
)));
3960 priv
->last_scan_jiffies
= jiffies
;
3963 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3964 static void iwl_rx_scan_complete_notif(struct iwl_priv
*priv
,
3965 struct iwl_rx_mem_buffer
*rxb
)
3967 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3968 struct iwl_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3970 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3971 scan_notif
->scanned_channels
,
3972 scan_notif
->tsf_low
,
3973 scan_notif
->tsf_high
, scan_notif
->status
);
3975 /* The HW is no longer scanning */
3976 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3978 /* The scan completion notification came in, so kill that timer... */
3979 cancel_delayed_work(&priv
->scan_check
);
3981 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3982 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3983 jiffies_to_msecs(elapsed_jiffies
3984 (priv
->scan_pass_start
, jiffies
)));
3986 /* Remove this scanned band from the list
3987 * of pending bands to scan */
3990 /* If a request to abort was given, or the scan did not succeed
3991 * then we reset the scan state machine and terminate,
3992 * re-queuing another scan if one has been requested */
3993 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3994 IWL_DEBUG_INFO("Aborted scan completed.\n");
3995 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3997 /* If there are more bands on this scan pass reschedule */
3998 if (priv
->scan_bands
> 0)
4002 priv
->last_scan_jiffies
= jiffies
;
4003 IWL_DEBUG_INFO("Setting scan to off\n");
4005 clear_bit(STATUS_SCANNING
, &priv
->status
);
4007 IWL_DEBUG_INFO("Scan took %dms\n",
4008 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
4010 queue_work(priv
->workqueue
, &priv
->scan_completed
);
4015 priv
->scan_pass_start
= jiffies
;
4016 queue_work(priv
->workqueue
, &priv
->request_scan
);
4019 /* Handle notification from uCode that card's power state is changing
4020 * due to software, hardware, or critical temperature RFKILL */
4021 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
4022 struct iwl_rx_mem_buffer
*rxb
)
4024 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4025 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
4026 unsigned long status
= priv
->status
;
4028 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4029 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
4030 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
4032 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
4033 RF_CARD_DISABLED
)) {
4035 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4036 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4038 if (!iwl_grab_restricted_access(priv
)) {
4039 iwl_write_restricted(
4040 priv
, HBUS_TARG_MBX_C
,
4041 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4043 iwl_release_restricted_access(priv
);
4046 if (!(flags
& RXON_CARD_DISABLED
)) {
4047 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
4048 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
4049 if (!iwl_grab_restricted_access(priv
)) {
4050 iwl_write_restricted(
4051 priv
, HBUS_TARG_MBX_C
,
4052 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
4054 iwl_release_restricted_access(priv
);
4058 if (flags
& RF_CARD_DISABLED
) {
4059 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
4060 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
4061 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4062 if (!iwl_grab_restricted_access(priv
))
4063 iwl_release_restricted_access(priv
);
4067 if (flags
& HW_CARD_DISABLED
)
4068 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4070 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4073 if (flags
& SW_CARD_DISABLED
)
4074 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4076 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
4078 if (!(flags
& RXON_CARD_DISABLED
))
4079 iwl_scan_cancel(priv
);
4081 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
4082 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
4083 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
4084 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
4085 queue_work(priv
->workqueue
, &priv
->rf_kill
);
4087 wake_up_interruptible(&priv
->wait_command_queue
);
4091 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4093 * Setup the RX handlers for each of the reply types sent from the uCode
4096 * This function chains into the hardware specific files for them to setup
4097 * any hardware specific handlers as well.
4099 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
4101 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
4102 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl_rx_reply_add_sta
;
4103 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
4104 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
4105 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
4106 iwl_rx_spectrum_measure_notif
;
4107 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
4108 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
4109 iwl_rx_pm_debug_statistics_notif
;
4110 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
4112 /* NOTE: iwl_rx_statistics is different based on whether
4113 * the build is for the 3945 or the 4965. See the
4114 * corresponding implementation in iwl-XXXX.c
4116 * The same handler is used for both the REPLY to a
4117 * discrete statistics request from the host as well as
4118 * for the periodic statistics notification from the uCode
4120 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_hw_rx_statistics
;
4121 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_hw_rx_statistics
;
4123 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl_rx_reply_scan
;
4124 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl_rx_scan_start_notif
;
4125 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
4126 iwl_rx_scan_results_notif
;
4127 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
4128 iwl_rx_scan_complete_notif
;
4129 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
4130 priv
->rx_handlers
[REPLY_TX
] = iwl_rx_reply_tx
;
4132 /* Setup hardware specific Rx handlers */
4133 iwl_hw_rx_handler_setup(priv
);
4137 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4138 * @rxb: Rx buffer to reclaim
4140 * If an Rx buffer has an async callback associated with it the callback
4141 * will be executed. The attached skb (if present) will only be freed
4142 * if the callback returns 1
4144 static void iwl_tx_cmd_complete(struct iwl_priv
*priv
,
4145 struct iwl_rx_mem_buffer
*rxb
)
4147 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4148 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
4149 int txq_id
= SEQ_TO_QUEUE(sequence
);
4150 int index
= SEQ_TO_INDEX(sequence
);
4151 int huge
= sequence
& SEQ_HUGE_FRAME
;
4153 struct iwl_cmd
*cmd
;
4155 /* If a Tx command is being handled and it isn't in the actual
4156 * command queue then there a command routing bug has been introduced
4157 * in the queue management code. */
4158 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
4159 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4160 txq_id
, pkt
->hdr
.cmd
);
4161 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
4163 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
4164 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
4166 /* Input error checking is done when commands are added to queue. */
4167 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
4168 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
4170 } else if (cmd
->meta
.u
.callback
&&
4171 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
4174 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
4176 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
4177 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4178 wake_up_interruptible(&priv
->wait_command_queue
);
4182 /************************** RX-FUNCTIONS ****************************/
4184 * Rx theory of operation
4186 * The host allocates 32 DMA target addresses and passes the host address
4187 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4191 * The host/firmware share two index registers for managing the Rx buffers.
4193 * The READ index maps to the first position that the firmware may be writing
4194 * to -- the driver can read up to (but not including) this position and get
4196 * The READ index is managed by the firmware once the card is enabled.
4198 * The WRITE index maps to the last position the driver has read from -- the
4199 * position preceding WRITE is the last slot the firmware can place a packet.
4201 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4204 * During initialization the host sets up the READ queue position to the first
4205 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4207 * When the firmware places a packet in a buffer it will advance the READ index
4208 * and fire the RX interrupt. The driver can then query the READ index and
4209 * process as many packets as possible, moving the WRITE index forward as it
4210 * resets the Rx queue buffers with new memory.
4212 * The management in the driver is as follows:
4213 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4214 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4215 * to replensish the iwl->rxq->rx_free.
4216 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4217 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4218 * 'processed' and 'read' driver indexes as well)
4219 * + A received packet is processed and handed to the kernel network stack,
4220 * detached from the iwl->rxq. The driver 'processed' index is updated.
4221 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4222 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4223 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4224 * were enough free buffers and RX_STALLED is set it is cleared.
4229 * iwl_rx_queue_alloc() Allocates rx_free
4230 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4231 * iwl_rx_queue_restock
4232 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4233 * queue, updates firmware pointers, and updates
4234 * the WRITE index. If insufficient rx_free buffers
4235 * are available, schedules iwl_rx_replenish
4237 * -- enable interrupts --
4238 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4239 * READ INDEX, detaching the SKB from the pool.
4240 * Moves the packet buffer from queue to rx_used.
4241 * Calls iwl_rx_queue_restock to refill any empty
4248 * iwl_rx_queue_space - Return number of free slots available in queue.
4250 static int iwl_rx_queue_space(const struct iwl_rx_queue
*q
)
4252 int s
= q
->read
- q
->write
;
4255 /* keep some buffer to not confuse full and empty queue */
4263 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4265 * NOTE: This function has 3945 and 4965 specific code sections
4266 * but is declared in base due to the majority of the
4267 * implementation being the same (only a numeric constant is
4271 int iwl_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl_rx_queue
*q
)
4275 unsigned long flags
;
4277 spin_lock_irqsave(&q
->lock
, flags
);
4279 if (q
->need_update
== 0)
4282 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4283 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4285 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4286 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4287 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4291 rc
= iwl_grab_restricted_access(priv
);
4295 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_WPTR
,
4297 iwl_release_restricted_access(priv
);
4299 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
4305 spin_unlock_irqrestore(&q
->lock
, flags
);
4310 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4312 * NOTE: This function has 3945 and 4965 specific code paths in it.
4314 static inline __le32
iwl_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
4315 dma_addr_t dma_addr
)
4317 return cpu_to_le32((u32
)(dma_addr
>> 8));
4322 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4324 * If there are slots in the RX queue that need to be restocked,
4325 * and we have free pre-allocated buffers, fill the ranks as much
4326 * as we can pulling from rx_free.
4328 * This moves the 'write' index forward to catch up with 'processed', and
4329 * also updates the memory address in the firmware to reference the new
4332 int iwl_rx_queue_restock(struct iwl_priv
*priv
)
4334 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4335 struct list_head
*element
;
4336 struct iwl_rx_mem_buffer
*rxb
;
4337 unsigned long flags
;
4340 spin_lock_irqsave(&rxq
->lock
, flags
);
4341 write
= rxq
->write
& ~0x7;
4342 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
4343 element
= rxq
->rx_free
.next
;
4344 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4346 rxq
->bd
[rxq
->write
] = iwl_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
4347 rxq
->queue
[rxq
->write
] = rxb
;
4348 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
4351 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4352 /* If the pre-allocated buffer pool is dropping low, schedule to
4354 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
4355 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
4358 /* If we've added more space for the firmware to place data, tell it */
4359 if ((write
!= (rxq
->write
& ~0x7))
4360 || (abs(rxq
->write
- rxq
->read
) > 7)) {
4361 spin_lock_irqsave(&rxq
->lock
, flags
);
4362 rxq
->need_update
= 1;
4363 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4364 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
4373 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4375 * When moving to rx_free an SKB is allocated for the slot.
4377 * Also restock the Rx queue via iwl_rx_queue_restock.
4378 * This is called as a scheduled work item (except for during intialization)
4380 void iwl_rx_replenish(void *data
)
4382 struct iwl_priv
*priv
= data
;
4383 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4384 struct list_head
*element
;
4385 struct iwl_rx_mem_buffer
*rxb
;
4386 unsigned long flags
;
4387 spin_lock_irqsave(&rxq
->lock
, flags
);
4388 while (!list_empty(&rxq
->rx_used
)) {
4389 element
= rxq
->rx_used
.next
;
4390 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4392 alloc_skb(IWL_RX_BUF_SIZE
, __GFP_NOWARN
| GFP_ATOMIC
);
4394 if (net_ratelimit())
4395 printk(KERN_CRIT DRV_NAME
4396 ": Can not allocate SKB buffers\n");
4397 /* We don't reschedule replenish work here -- we will
4398 * call the restock method and if it still needs
4399 * more buffers it will schedule replenish */
4402 priv
->alloc_rxb_skb
++;
4405 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
4406 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4407 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
4410 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4412 spin_lock_irqsave(&priv
->lock
, flags
);
4413 iwl_rx_queue_restock(priv
);
4414 spin_unlock_irqrestore(&priv
->lock
, flags
);
4417 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4418 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4419 * This free routine walks the list of POOL entries and if SKB is set to
4420 * non NULL it is unmapped and freed
4422 void iwl_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4425 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
4426 if (rxq
->pool
[i
].skb
!= NULL
) {
4427 pci_unmap_single(priv
->pci_dev
,
4428 rxq
->pool
[i
].dma_addr
,
4429 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4430 dev_kfree_skb(rxq
->pool
[i
].skb
);
4434 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
4439 int iwl_rx_queue_alloc(struct iwl_priv
*priv
)
4441 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4442 struct pci_dev
*dev
= priv
->pci_dev
;
4445 spin_lock_init(&rxq
->lock
);
4446 INIT_LIST_HEAD(&rxq
->rx_free
);
4447 INIT_LIST_HEAD(&rxq
->rx_used
);
4448 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
4451 /* Fill the rx_used queue with _all_ of the Rx buffers */
4452 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
4453 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4454 /* Set us so that we have processed and used all buffers, but have
4455 * not restocked the Rx queue with fresh buffers */
4456 rxq
->read
= rxq
->write
= 0;
4457 rxq
->free_count
= 0;
4458 rxq
->need_update
= 0;
4462 void iwl_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4464 unsigned long flags
;
4466 spin_lock_irqsave(&rxq
->lock
, flags
);
4467 INIT_LIST_HEAD(&rxq
->rx_free
);
4468 INIT_LIST_HEAD(&rxq
->rx_used
);
4469 /* Fill the rx_used queue with _all_ of the Rx buffers */
4470 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
4471 /* In the reset function, these buffers may have been allocated
4472 * to an SKB, so we need to unmap and free potential storage */
4473 if (rxq
->pool
[i
].skb
!= NULL
) {
4474 pci_unmap_single(priv
->pci_dev
,
4475 rxq
->pool
[i
].dma_addr
,
4476 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4477 priv
->alloc_rxb_skb
--;
4478 dev_kfree_skb(rxq
->pool
[i
].skb
);
4479 rxq
->pool
[i
].skb
= NULL
;
4481 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4484 /* Set us so that we have processed and used all buffers, but have
4485 * not restocked the Rx queue with fresh buffers */
4486 rxq
->read
= rxq
->write
= 0;
4487 rxq
->free_count
= 0;
4488 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4491 /* Convert linear signal-to-noise ratio into dB */
4492 static u8 ratio2dB
[100] = {
4493 /* 0 1 2 3 4 5 6 7 8 9 */
4494 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4495 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4496 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4497 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4498 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4499 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4500 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4501 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4502 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4503 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4506 /* Calculates a relative dB value from a ratio of linear
4507 * (i.e. not dB) signal levels.
4508 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4509 int iwl_calc_db_from_ratio(int sig_ratio
)
4511 /* Anything above 1000:1 just report as 60 dB */
4512 if (sig_ratio
> 1000)
4515 /* Above 100:1, divide by 10 and use table,
4516 * add 20 dB to make up for divide by 10 */
4517 if (sig_ratio
> 100)
4518 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4520 /* We shouldn't see this */
4524 /* Use table for ratios 1:1 - 99:1 */
4525 return (int)ratio2dB
[sig_ratio
];
4528 #define PERFECT_RSSI (-20) /* dBm */
4529 #define WORST_RSSI (-95) /* dBm */
4530 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4532 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4533 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4534 * about formulas used below. */
4535 int iwl_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4538 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4540 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4541 * as indicator; formula is (signal dbm - noise dbm).
4542 * SNR at or above 40 is a great signal (100%).
4543 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4544 * Weakest usable signal is usually 10 - 15 dB SNR. */
4546 if (rssi_dbm
- noise_dbm
>= 40)
4548 else if (rssi_dbm
< noise_dbm
)
4550 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4552 /* Else use just the signal level.
4553 * This formula is a least squares fit of data points collected and
4554 * compared with a reference system that had a percentage (%) display
4555 * for signal quality. */
4557 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4558 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4559 (RSSI_RANGE
* RSSI_RANGE
);
4563 else if (sig_qual
< 1)
4570 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4572 * Uses the priv->rx_handlers callback function array to invoke
4573 * the appropriate handlers, including command responses,
4574 * frame-received notifications, and other notifications.
4576 static void iwl_rx_handle(struct iwl_priv
*priv
)
4578 struct iwl_rx_mem_buffer
*rxb
;
4579 struct iwl_rx_packet
*pkt
;
4580 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4583 unsigned long flags
;
4585 r
= iwl_hw_get_rx_read(priv
);
4588 /* Rx interrupt, but nothing sent from uCode */
4590 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4593 rxb
= rxq
->queue
[i
];
4595 /* If an RXB doesn't have a queue slot associated with it
4596 * then a bug has been introduced in the queue refilling
4597 * routines -- catch it here */
4598 BUG_ON(rxb
== NULL
);
4600 rxq
->queue
[i
] = NULL
;
4602 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4604 PCI_DMA_FROMDEVICE
);
4605 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4607 /* Reclaim a command buffer only if this packet is a response
4608 * to a (driver-originated) command.
4609 * If the packet (e.g. Rx frame) originated from uCode,
4610 * there is no command buffer to reclaim.
4611 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4612 * but apparently a few don't get set; catch them here. */
4613 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4614 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
4615 (pkt
->hdr
.cmd
!= REPLY_4965_RX
) &&
4616 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
4617 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4618 (pkt
->hdr
.cmd
!= REPLY_TX
);
4620 /* Based on type of command response or notification,
4621 * handle those that need handling via function in
4622 * rx_handlers table. See iwl_setup_rx_handlers() */
4623 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4624 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4625 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4626 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4627 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4629 /* No handling needed */
4630 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4631 "r %d i %d No handler needed for %s, 0x%02x\n",
4632 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4637 /* Invoke any callbacks, transfer the skb to caller,
4638 * and fire off the (possibly) blocking iwl_send_cmd()
4639 * as we reclaim the driver command queue */
4640 if (rxb
&& rxb
->skb
)
4641 iwl_tx_cmd_complete(priv
, rxb
);
4643 IWL_WARNING("Claim null rxb?\n");
4646 /* For now we just don't re-use anything. We can tweak this
4647 * later to try and re-use notification packets and SKBs that
4648 * fail to Rx correctly */
4649 if (rxb
->skb
!= NULL
) {
4650 priv
->alloc_rxb_skb
--;
4651 dev_kfree_skb_any(rxb
->skb
);
4655 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4656 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4657 spin_lock_irqsave(&rxq
->lock
, flags
);
4658 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4659 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4660 i
= (i
+ 1) & RX_QUEUE_MASK
;
4663 /* Backtrack one entry */
4665 iwl_rx_queue_restock(priv
);
4668 int iwl_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4669 struct iwl_tx_queue
*txq
)
4673 int txq_id
= txq
->q
.id
;
4675 if (txq
->need_update
== 0)
4678 /* if we're trying to save power */
4679 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4680 /* wake up nic if it's powered down ...
4681 * uCode will wake up, and interrupt us again, so next
4682 * time we'll skip this part. */
4683 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4685 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4686 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4687 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4688 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4692 /* restore this queue's parameters in nic hardware. */
4693 rc
= iwl_grab_restricted_access(priv
);
4696 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
4697 txq
->q
.first_empty
| (txq_id
<< 8));
4698 iwl_release_restricted_access(priv
);
4700 /* else not in power-save mode, uCode will never sleep when we're
4701 * trying to tx (during RFKILL, we're not trying to tx). */
4703 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4704 txq
->q
.first_empty
| (txq_id
<< 8));
4706 txq
->need_update
= 0;
4711 #ifdef CONFIG_IWLWIFI_DEBUG
4712 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd
*rxon
)
4714 DECLARE_MAC_BUF(mac
);
4716 IWL_DEBUG_RADIO("RX CONFIG:\n");
4717 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4718 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4719 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4720 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4721 le32_to_cpu(rxon
->filter_flags
));
4722 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4723 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4724 rxon
->ofdm_basic_rates
);
4725 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4726 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4727 print_mac(mac
, rxon
->node_addr
));
4728 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4729 print_mac(mac
, rxon
->bssid_addr
));
4730 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4734 static void iwl_enable_interrupts(struct iwl_priv
*priv
)
4736 IWL_DEBUG_ISR("Enabling interrupts\n");
4737 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4738 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4741 static inline void iwl_disable_interrupts(struct iwl_priv
*priv
)
4743 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4745 /* disable interrupts from uCode/NIC to host */
4746 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4748 /* acknowledge/clear/reset any interrupts still pending
4749 * from uCode or flow handler (Rx/Tx DMA) */
4750 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4751 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4752 IWL_DEBUG_ISR("Disabled interrupts\n");
4755 static const char *desc_lookup(int i
)
4763 return "BAD_CHECKSUM";
4765 return "NMI_INTERRUPT";
4769 return "FATAL_ERROR";
4775 #define ERROR_START_OFFSET (1 * sizeof(u32))
4776 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4778 static void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
4781 u32 desc
, time
, count
, base
, data1
;
4782 u32 blink1
, blink2
, ilink1
, ilink2
;
4785 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4787 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4788 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4792 rc
= iwl_grab_restricted_access(priv
);
4794 IWL_WARNING("Can not read from adapter at this time.\n");
4798 count
= iwl_read_restricted_mem(priv
, base
);
4800 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4801 IWL_ERROR("Start IWL Error Log Dump:\n");
4802 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4803 priv
->status
, priv
->config
, count
);
4806 desc
= iwl_read_restricted_mem(priv
, base
+ 1 * sizeof(u32
));
4807 blink1
= iwl_read_restricted_mem(priv
, base
+ 3 * sizeof(u32
));
4808 blink2
= iwl_read_restricted_mem(priv
, base
+ 4 * sizeof(u32
));
4809 ilink1
= iwl_read_restricted_mem(priv
, base
+ 5 * sizeof(u32
));
4810 ilink2
= iwl_read_restricted_mem(priv
, base
+ 6 * sizeof(u32
));
4811 data1
= iwl_read_restricted_mem(priv
, base
+ 7 * sizeof(u32
));
4812 data2
= iwl_read_restricted_mem(priv
, base
+ 8 * sizeof(u32
));
4813 line
= iwl_read_restricted_mem(priv
, base
+ 9 * sizeof(u32
));
4814 time
= iwl_read_restricted_mem(priv
, base
+ 11 * sizeof(u32
));
4816 IWL_ERROR("Desc Time "
4817 "data1 data2 line\n");
4818 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4819 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
4820 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4821 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
4824 iwl_release_restricted_access(priv
);
4827 #define EVENT_START_OFFSET (4 * sizeof(u32))
4830 * iwl_print_event_log - Dump error event log to syslog
4832 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4834 static void iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4835 u32 num_events
, u32 mode
)
4838 u32 base
; /* SRAM byte address of event log header */
4839 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4840 u32 ptr
; /* SRAM byte address of log data */
4841 u32 ev
, time
, data
; /* event log data */
4843 if (num_events
== 0)
4846 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4849 event_size
= 2 * sizeof(u32
);
4851 event_size
= 3 * sizeof(u32
);
4853 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4855 /* "time" is actually "data" for mode 0 (no timestamp).
4856 * place event id # at far right for easier visual parsing. */
4857 for (i
= 0; i
< num_events
; i
++) {
4858 ev
= iwl_read_restricted_mem(priv
, ptr
);
4860 time
= iwl_read_restricted_mem(priv
, ptr
);
4863 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4865 data
= iwl_read_restricted_mem(priv
, ptr
);
4867 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4872 static void iwl_dump_nic_event_log(struct iwl_priv
*priv
)
4875 u32 base
; /* SRAM byte address of event log header */
4876 u32 capacity
; /* event log capacity in # entries */
4877 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4878 u32 num_wraps
; /* # times uCode wrapped to top of log */
4879 u32 next_entry
; /* index of next entry to be written by uCode */
4880 u32 size
; /* # entries that we'll print */
4882 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4883 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4884 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4888 rc
= iwl_grab_restricted_access(priv
);
4890 IWL_WARNING("Can not read from adapter at this time.\n");
4894 /* event log header */
4895 capacity
= iwl_read_restricted_mem(priv
, base
);
4896 mode
= iwl_read_restricted_mem(priv
, base
+ (1 * sizeof(u32
)));
4897 num_wraps
= iwl_read_restricted_mem(priv
, base
+ (2 * sizeof(u32
)));
4898 next_entry
= iwl_read_restricted_mem(priv
, base
+ (3 * sizeof(u32
)));
4900 size
= num_wraps
? capacity
: next_entry
;
4902 /* bail out if nothing in log */
4904 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4905 iwl_release_restricted_access(priv
);
4909 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4912 /* if uCode has wrapped back to top of log, start at the oldest entry,
4913 * i.e the next one that uCode would fill. */
4915 iwl_print_event_log(priv
, next_entry
,
4916 capacity
- next_entry
, mode
);
4918 /* (then/else) start at top of log */
4919 iwl_print_event_log(priv
, 0, next_entry
, mode
);
4921 iwl_release_restricted_access(priv
);
4925 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4927 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
4929 /* Set the FW error flag -- cleared on iwl_down */
4930 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4932 /* Cancel currently queued command. */
4933 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4935 #ifdef CONFIG_IWLWIFI_DEBUG
4936 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4937 iwl_dump_nic_error_log(priv
);
4938 iwl_dump_nic_event_log(priv
);
4939 iwl_print_rx_config_cmd(&priv
->staging_rxon
);
4943 wake_up_interruptible(&priv
->wait_command_queue
);
4945 /* Keep the restart process from trying to send host
4946 * commands by clearing the INIT status bit */
4947 clear_bit(STATUS_READY
, &priv
->status
);
4949 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4950 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4951 "Restarting adapter due to uCode error.\n");
4953 if (iwl_is_associated(priv
)) {
4954 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4955 sizeof(priv
->recovery_rxon
));
4956 priv
->error_recovering
= 1;
4958 queue_work(priv
->workqueue
, &priv
->restart
);
4962 static void iwl_error_recovery(struct iwl_priv
*priv
)
4964 unsigned long flags
;
4966 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4967 sizeof(priv
->staging_rxon
));
4968 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4969 iwl_commit_rxon(priv
);
4971 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
4973 spin_lock_irqsave(&priv
->lock
, flags
);
4974 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4975 priv
->error_recovering
= 0;
4976 spin_unlock_irqrestore(&priv
->lock
, flags
);
4979 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
4981 u32 inta
, handled
= 0;
4983 unsigned long flags
;
4984 #ifdef CONFIG_IWLWIFI_DEBUG
4988 spin_lock_irqsave(&priv
->lock
, flags
);
4990 /* Ack/clear/reset pending uCode interrupts.
4991 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4992 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4993 inta
= iwl_read32(priv
, CSR_INT
);
4994 iwl_write32(priv
, CSR_INT
, inta
);
4996 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4997 * Any new interrupts that happen after this, either while we're
4998 * in this tasklet, or later, will show up in next ISR/tasklet. */
4999 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5000 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
5002 #ifdef CONFIG_IWLWIFI_DEBUG
5003 if (iwl_debug_level
& IWL_DL_ISR
) {
5004 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
5005 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5006 inta
, inta_mask
, inta_fh
);
5010 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5011 * atomic, make sure that inta covers all the interrupts that
5012 * we've discovered, even if FH interrupt came in just after
5013 * reading CSR_INT. */
5014 if (inta_fh
& CSR_FH_INT_RX_MASK
)
5015 inta
|= CSR_INT_BIT_FH_RX
;
5016 if (inta_fh
& CSR_FH_INT_TX_MASK
)
5017 inta
|= CSR_INT_BIT_FH_TX
;
5019 /* Now service all interrupt bits discovered above. */
5020 if (inta
& CSR_INT_BIT_HW_ERR
) {
5021 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5023 /* Tell the device to stop sending interrupts */
5024 iwl_disable_interrupts(priv
);
5026 iwl_irq_handle_error(priv
);
5028 handled
|= CSR_INT_BIT_HW_ERR
;
5030 spin_unlock_irqrestore(&priv
->lock
, flags
);
5035 #ifdef CONFIG_IWLWIFI_DEBUG
5036 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5037 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5038 if (inta
& CSR_INT_BIT_MAC_CLK_ACTV
)
5039 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5041 /* Alive notification via Rx interrupt will do the real work */
5042 if (inta
& CSR_INT_BIT_ALIVE
)
5043 IWL_DEBUG_ISR("Alive interrupt\n");
5046 /* Safely ignore these bits for debug checks below */
5047 inta
&= ~(CSR_INT_BIT_MAC_CLK_ACTV
| CSR_INT_BIT_ALIVE
);
5049 /* HW RF KILL switch toggled (4965 only) */
5050 if (inta
& CSR_INT_BIT_RF_KILL
) {
5052 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
5053 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
5056 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
5057 "RF_KILL bit toggled to %s.\n",
5058 hw_rf_kill
? "disable radio":"enable radio");
5060 /* Queue restart only if RF_KILL switch was set to "kill"
5061 * when we loaded driver, and is now set to "enable".
5062 * After we're Alive, RF_KILL gets handled by
5063 * iwl_rx_card_state_notif() */
5064 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
))
5065 queue_work(priv
->workqueue
, &priv
->restart
);
5067 handled
|= CSR_INT_BIT_RF_KILL
;
5070 /* Chip got too hot and stopped itself (4965 only) */
5071 if (inta
& CSR_INT_BIT_CT_KILL
) {
5072 IWL_ERROR("Microcode CT kill error detected.\n");
5073 handled
|= CSR_INT_BIT_CT_KILL
;
5076 /* Error detected by uCode */
5077 if (inta
& CSR_INT_BIT_SW_ERR
) {
5078 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5080 iwl_irq_handle_error(priv
);
5081 handled
|= CSR_INT_BIT_SW_ERR
;
5084 /* uCode wakes up after power-down sleep */
5085 if (inta
& CSR_INT_BIT_WAKEUP
) {
5086 IWL_DEBUG_ISR("Wakeup interrupt\n");
5087 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
5088 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
5089 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
5090 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
5091 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
5092 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
5093 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
5095 handled
|= CSR_INT_BIT_WAKEUP
;
5098 /* All uCode command responses, including Tx command responses,
5099 * Rx "responses" (frame-received notification), and other
5100 * notifications from uCode come through here*/
5101 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
5102 iwl_rx_handle(priv
);
5103 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
5106 if (inta
& CSR_INT_BIT_FH_TX
) {
5107 IWL_DEBUG_ISR("Tx interrupt\n");
5108 handled
|= CSR_INT_BIT_FH_TX
;
5111 if (inta
& ~handled
)
5112 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
5114 if (inta
& ~CSR_INI_SET_MASK
) {
5115 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5116 inta
& ~CSR_INI_SET_MASK
);
5117 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
5120 /* Re-enable all interrupts */
5121 iwl_enable_interrupts(priv
);
5123 #ifdef CONFIG_IWLWIFI_DEBUG
5124 if (iwl_debug_level
& (IWL_DL_ISR
)) {
5125 inta
= iwl_read32(priv
, CSR_INT
);
5126 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
5127 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5128 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5129 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
5132 spin_unlock_irqrestore(&priv
->lock
, flags
);
5135 static irqreturn_t
iwl_isr(int irq
, void *data
)
5137 struct iwl_priv
*priv
= data
;
5138 u32 inta
, inta_mask
;
5143 spin_lock(&priv
->lock
);
5145 /* Disable (but don't clear!) interrupts here to avoid
5146 * back-to-back ISRs and sporadic interrupts from our NIC.
5147 * If we have something to service, the tasklet will re-enable ints.
5148 * If we *don't* have something, we'll re-enable before leaving here. */
5149 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
5150 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
5152 /* Discover which interrupts are active/pending */
5153 inta
= iwl_read32(priv
, CSR_INT
);
5154 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
5156 /* Ignore interrupt if there's nothing in NIC to service.
5157 * This may be due to IRQ shared with another device,
5158 * or due to sporadic interrupts thrown from our NIC. */
5159 if (!inta
&& !inta_fh
) {
5160 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5164 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
5165 /* Hardware disappeared */
5166 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
5170 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5171 inta
, inta_mask
, inta_fh
);
5173 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5174 tasklet_schedule(&priv
->irq_tasklet
);
5175 spin_unlock(&priv
->lock
);
5180 /* re-enable interrupts here since we don't have anything to service. */
5181 iwl_enable_interrupts(priv
);
5182 spin_unlock(&priv
->lock
);
5186 /************************** EEPROM BANDS ****************************
5188 * The iwl_eeprom_band definitions below provide the mapping from the
5189 * EEPROM contents to the specific channel number supported for each
5192 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5193 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5194 * The specific geography and calibration information for that channel
5195 * is contained in the eeprom map itself.
5197 * During init, we copy the eeprom information and channel map
5198 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5200 * channel_map_24/52 provides the index in the channel_info array for a
5201 * given channel. We have to have two separate maps as there is channel
5202 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5205 * A value of 0xff stored in the channel_map indicates that the channel
5206 * is not supported by the hardware at all.
5208 * A value of 0xfe in the channel_map indicates that the channel is not
5209 * valid for Tx with the current hardware. This means that
5210 * while the system can tune and receive on a given channel, it may not
5211 * be able to associate or transmit any frames on that
5212 * channel. There is no corresponding channel information for that
5215 *********************************************************************/
5218 static const u8 iwl_eeprom_band_1
[14] = {
5219 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5223 static const u8 iwl_eeprom_band_2
[] = {
5224 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5227 static const u8 iwl_eeprom_band_3
[] = { /* 5205-5320MHz */
5228 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5231 static const u8 iwl_eeprom_band_4
[] = { /* 5500-5700MHz */
5232 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5235 static const u8 iwl_eeprom_band_5
[] = { /* 5725-5825MHz */
5236 145, 149, 153, 157, 161, 165
5239 static u8 iwl_eeprom_band_6
[] = { /* 2.4 FAT channel */
5243 static u8 iwl_eeprom_band_7
[] = { /* 5.2 FAT channel */
5244 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5247 static void iwl_init_band_reference(const struct iwl_priv
*priv
, int band
,
5248 int *eeprom_ch_count
,
5249 const struct iwl_eeprom_channel
5251 const u8
**eeprom_ch_index
)
5254 case 1: /* 2.4GHz band */
5255 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_1
);
5256 *eeprom_ch_info
= priv
->eeprom
.band_1_channels
;
5257 *eeprom_ch_index
= iwl_eeprom_band_1
;
5259 case 2: /* 5.2GHz band */
5260 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_2
);
5261 *eeprom_ch_info
= priv
->eeprom
.band_2_channels
;
5262 *eeprom_ch_index
= iwl_eeprom_band_2
;
5264 case 3: /* 5.2GHz band */
5265 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_3
);
5266 *eeprom_ch_info
= priv
->eeprom
.band_3_channels
;
5267 *eeprom_ch_index
= iwl_eeprom_band_3
;
5269 case 4: /* 5.2GHz band */
5270 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_4
);
5271 *eeprom_ch_info
= priv
->eeprom
.band_4_channels
;
5272 *eeprom_ch_index
= iwl_eeprom_band_4
;
5274 case 5: /* 5.2GHz band */
5275 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_5
);
5276 *eeprom_ch_info
= priv
->eeprom
.band_5_channels
;
5277 *eeprom_ch_index
= iwl_eeprom_band_5
;
5280 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_6
);
5281 *eeprom_ch_info
= priv
->eeprom
.band_24_channels
;
5282 *eeprom_ch_index
= iwl_eeprom_band_6
;
5285 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_7
);
5286 *eeprom_ch_info
= priv
->eeprom
.band_52_channels
;
5287 *eeprom_ch_index
= iwl_eeprom_band_7
;
5295 const struct iwl_channel_info
*iwl_get_channel_info(const struct iwl_priv
*priv
,
5296 int phymode
, u16 channel
)
5301 case MODE_IEEE80211A
:
5302 for (i
= 14; i
< priv
->channel_count
; i
++) {
5303 if (priv
->channel_info
[i
].channel
== channel
)
5304 return &priv
->channel_info
[i
];
5308 case MODE_IEEE80211B
:
5309 case MODE_IEEE80211G
:
5310 if (channel
>= 1 && channel
<= 14)
5311 return &priv
->channel_info
[channel
- 1];
5319 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5322 static int iwl_init_channel_map(struct iwl_priv
*priv
)
5324 int eeprom_ch_count
= 0;
5325 const u8
*eeprom_ch_index
= NULL
;
5326 const struct iwl_eeprom_channel
*eeprom_ch_info
= NULL
;
5328 struct iwl_channel_info
*ch_info
;
5330 if (priv
->channel_count
) {
5331 IWL_DEBUG_INFO("Channel map already initialized.\n");
5335 if (priv
->eeprom
.version
< 0x2f) {
5336 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5337 priv
->eeprom
.version
);
5341 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5343 priv
->channel_count
=
5344 ARRAY_SIZE(iwl_eeprom_band_1
) +
5345 ARRAY_SIZE(iwl_eeprom_band_2
) +
5346 ARRAY_SIZE(iwl_eeprom_band_3
) +
5347 ARRAY_SIZE(iwl_eeprom_band_4
) +
5348 ARRAY_SIZE(iwl_eeprom_band_5
);
5350 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv
->channel_count
);
5352 priv
->channel_info
= kzalloc(sizeof(struct iwl_channel_info
) *
5353 priv
->channel_count
, GFP_KERNEL
);
5354 if (!priv
->channel_info
) {
5355 IWL_ERROR("Could not allocate channel_info\n");
5356 priv
->channel_count
= 0;
5360 ch_info
= priv
->channel_info
;
5362 /* Loop through the 5 EEPROM bands adding them in order to the
5363 * channel map we maintain (that contains additional information than
5364 * what just in the EEPROM) */
5365 for (band
= 1; band
<= 5; band
++) {
5367 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5368 &eeprom_ch_info
, &eeprom_ch_index
);
5370 /* Loop through each band adding each of the channels */
5371 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5372 ch_info
->channel
= eeprom_ch_index
[ch
];
5373 ch_info
->phymode
= (band
== 1) ? MODE_IEEE80211B
:
5376 /* permanently store EEPROM's channel regulatory flags
5377 * and max power in channel info database. */
5378 ch_info
->eeprom
= eeprom_ch_info
[ch
];
5380 /* Copy the run-time flags so they are there even on
5381 * invalid channels */
5382 ch_info
->flags
= eeprom_ch_info
[ch
].flags
;
5384 if (!(is_channel_valid(ch_info
))) {
5385 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5389 is_channel_a_band(ch_info
) ?
5395 /* Initialize regulatory-based run-time data */
5396 ch_info
->max_power_avg
= ch_info
->curr_txpow
=
5397 eeprom_ch_info
[ch
].max_power_avg
;
5398 ch_info
->scan_power
= eeprom_ch_info
[ch
].max_power_avg
;
5399 ch_info
->min_power
= 0;
5401 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5402 " %ddBm): Ad-Hoc %ssupported\n",
5404 is_channel_a_band(ch_info
) ?
5406 CHECK_AND_PRINT(IBSS
),
5407 CHECK_AND_PRINT(ACTIVE
),
5408 CHECK_AND_PRINT(RADAR
),
5409 CHECK_AND_PRINT(WIDE
),
5410 CHECK_AND_PRINT(NARROW
),
5411 CHECK_AND_PRINT(DFS
),
5412 eeprom_ch_info
[ch
].flags
,
5413 eeprom_ch_info
[ch
].max_power_avg
,
5414 ((eeprom_ch_info
[ch
].
5415 flags
& EEPROM_CHANNEL_IBSS
)
5416 && !(eeprom_ch_info
[ch
].
5417 flags
& EEPROM_CHANNEL_RADAR
))
5420 /* Set the user_txpower_limit to the highest power
5421 * supported by any channel */
5422 if (eeprom_ch_info
[ch
].max_power_avg
>
5423 priv
->user_txpower_limit
)
5424 priv
->user_txpower_limit
=
5425 eeprom_ch_info
[ch
].max_power_avg
;
5431 for (band
= 6; band
<= 7; band
++) {
5433 u8 fat_extension_chan
;
5435 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5436 &eeprom_ch_info
, &eeprom_ch_index
);
5438 phymode
= (band
== 6) ? MODE_IEEE80211B
: MODE_IEEE80211A
;
5439 /* Loop through each band adding each of the channels */
5440 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5443 ((eeprom_ch_index
[ch
] == 5) ||
5444 (eeprom_ch_index
[ch
] == 6) ||
5445 (eeprom_ch_index
[ch
] == 7)))
5446 fat_extension_chan
= HT_IE_EXT_CHANNEL_MAX
;
5448 fat_extension_chan
= HT_IE_EXT_CHANNEL_ABOVE
;
5450 iwl4965_set_fat_chan_info(priv
, phymode
,
5451 eeprom_ch_index
[ch
],
5452 &(eeprom_ch_info
[ch
]),
5453 fat_extension_chan
);
5455 iwl4965_set_fat_chan_info(priv
, phymode
,
5456 (eeprom_ch_index
[ch
] + 4),
5457 &(eeprom_ch_info
[ch
]),
5458 HT_IE_EXT_CHANNEL_BELOW
);
5465 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5466 * sending probe req. This should be set long enough to hear probe responses
5467 * from more than one AP. */
5468 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5469 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5471 /* For faster active scanning, scan will move to the next channel if fewer than
5472 * PLCP_QUIET_THRESH packets are heard on this channel within
5473 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5474 * time if it's a quiet channel (nothing responded to our probe, and there's
5475 * no other traffic).
5476 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5477 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5478 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5480 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5481 * Must be set longer than active dwell time.
5482 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5483 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5484 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5485 #define IWL_PASSIVE_DWELL_BASE (100)
5486 #define IWL_CHANNEL_TUNE_TIME 5
5488 static inline u16
iwl_get_active_dwell_time(struct iwl_priv
*priv
, int phymode
)
5490 if (phymode
== MODE_IEEE80211A
)
5491 return IWL_ACTIVE_DWELL_TIME_52
;
5493 return IWL_ACTIVE_DWELL_TIME_24
;
5496 static u16
iwl_get_passive_dwell_time(struct iwl_priv
*priv
, int phymode
)
5498 u16 active
= iwl_get_active_dwell_time(priv
, phymode
);
5499 u16 passive
= (phymode
!= MODE_IEEE80211A
) ?
5500 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
5501 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
5503 if (iwl_is_associated(priv
)) {
5504 /* If we're associated, we clamp the maximum passive
5505 * dwell time to be 98% of the beacon interval (minus
5506 * 2 * channel tune time) */
5507 passive
= priv
->beacon_int
;
5508 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
5509 passive
= IWL_PASSIVE_DWELL_BASE
;
5510 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
5513 if (passive
<= active
)
5514 passive
= active
+ 1;
5519 static int iwl_get_channels_for_scan(struct iwl_priv
*priv
, int phymode
,
5520 u8 is_active
, u8 direct_mask
,
5521 struct iwl_scan_channel
*scan_ch
)
5523 const struct ieee80211_channel
*channels
= NULL
;
5524 const struct ieee80211_hw_mode
*hw_mode
;
5525 const struct iwl_channel_info
*ch_info
;
5526 u16 passive_dwell
= 0;
5527 u16 active_dwell
= 0;
5530 hw_mode
= iwl_get_hw_mode(priv
, phymode
);
5534 channels
= hw_mode
->channels
;
5536 active_dwell
= iwl_get_active_dwell_time(priv
, phymode
);
5537 passive_dwell
= iwl_get_passive_dwell_time(priv
, phymode
);
5539 for (i
= 0, added
= 0; i
< hw_mode
->num_channels
; i
++) {
5540 if (channels
[i
].chan
==
5541 le16_to_cpu(priv
->active_rxon
.channel
)) {
5542 if (iwl_is_associated(priv
)) {
5544 ("Skipping current channel %d\n",
5545 le16_to_cpu(priv
->active_rxon
.channel
));
5548 } else if (priv
->only_active_channel
)
5551 scan_ch
->channel
= channels
[i
].chan
;
5553 ch_info
= iwl_get_channel_info(priv
, phymode
, scan_ch
->channel
);
5554 if (!is_channel_valid(ch_info
)) {
5555 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5560 if (!is_active
|| is_channel_passive(ch_info
) ||
5561 !(channels
[i
].flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
))
5562 scan_ch
->type
= 0; /* passive */
5564 scan_ch
->type
= 1; /* active */
5566 if (scan_ch
->type
& 1)
5567 scan_ch
->type
|= (direct_mask
<< 1);
5569 if (is_channel_narrow(ch_info
))
5570 scan_ch
->type
|= (1 << 7);
5572 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
5573 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
5575 /* Set power levels to defaults */
5576 scan_ch
->tpc
.dsp_atten
= 110;
5577 /* scan_pwr_info->tpc.dsp_atten; */
5579 /*scan_pwr_info->tpc.tx_gain; */
5580 if (phymode
== MODE_IEEE80211A
)
5581 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
5583 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
5584 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5586 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5590 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5592 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
5593 (scan_ch
->type
& 1) ?
5594 active_dwell
: passive_dwell
);
5600 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
5604 static void iwl_reset_channel_flag(struct iwl_priv
*priv
)
5607 for (i
= 0; i
< 3; i
++) {
5608 struct ieee80211_hw_mode
*hw_mode
= (void *)&priv
->modes
[i
];
5609 for (j
= 0; j
< hw_mode
->num_channels
; j
++)
5610 hw_mode
->channels
[j
].flag
= hw_mode
->channels
[j
].val
;
5614 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
5615 struct ieee80211_rate
*rates
)
5619 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
5620 rates
[i
].rate
= iwl_rates
[i
].ieee
* 5;
5621 rates
[i
].val
= i
; /* Rate scaling will work on indexes */
5623 rates
[i
].flags
= IEEE80211_RATE_SUPPORTED
;
5624 /* Only OFDM have the bits-per-symbol set */
5625 if ((i
<= IWL_LAST_OFDM_RATE
) && (i
>= IWL_FIRST_OFDM_RATE
))
5626 rates
[i
].flags
|= IEEE80211_RATE_OFDM
;
5629 * If CCK 1M then set rate flag to CCK else CCK_2
5630 * which is CCK | PREAMBLE2
5632 rates
[i
].flags
|= (iwl_rates
[i
].plcp
== 10) ?
5633 IEEE80211_RATE_CCK
: IEEE80211_RATE_CCK_2
;
5636 /* Set up which ones are basic rates... */
5637 if (IWL_BASIC_RATES_MASK
& (1 << i
))
5638 rates
[i
].flags
|= IEEE80211_RATE_BASIC
;
5641 iwl4965_init_hw_rates(priv
, rates
);
5645 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5647 static int iwl_init_geos(struct iwl_priv
*priv
)
5649 struct iwl_channel_info
*ch
;
5650 struct ieee80211_hw_mode
*modes
;
5651 struct ieee80211_channel
*channels
;
5652 struct ieee80211_channel
*geo_ch
;
5653 struct ieee80211_rate
*rates
;
5665 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5666 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5670 modes
= kzalloc(sizeof(struct ieee80211_hw_mode
) * mode_count
,
5675 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
5676 priv
->channel_count
, GFP_KERNEL
);
5682 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_MAX_RATES
+ 1)),
5695 /* 5.2GHz channels start after the 2.4GHz channels */
5696 modes
[A
].mode
= MODE_IEEE80211A
;
5697 modes
[A
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5698 modes
[A
].rates
= rates
;
5699 modes
[A
].num_rates
= 8; /* just OFDM */
5700 modes
[A
].rates
= &rates
[4];
5701 modes
[A
].num_channels
= 0;
5703 modes
[B
].mode
= MODE_IEEE80211B
;
5704 modes
[B
].channels
= channels
;
5705 modes
[B
].rates
= rates
;
5706 modes
[B
].num_rates
= 4; /* just CCK */
5707 modes
[B
].num_channels
= 0;
5709 modes
[G
].mode
= MODE_IEEE80211G
;
5710 modes
[G
].channels
= channels
;
5711 modes
[G
].rates
= rates
;
5712 modes
[G
].num_rates
= 12; /* OFDM & CCK */
5713 modes
[G
].num_channels
= 0;
5715 modes
[G_11N
].mode
= MODE_IEEE80211G
;
5716 modes
[G_11N
].channels
= channels
;
5717 modes
[G_11N
].num_rates
= 13; /* OFDM & CCK */
5718 modes
[G_11N
].rates
= rates
;
5719 modes
[G_11N
].num_channels
= 0;
5721 modes
[A_11N
].mode
= MODE_IEEE80211A
;
5722 modes
[A_11N
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5723 modes
[A_11N
].rates
= &rates
[4];
5724 modes
[A_11N
].num_rates
= 9; /* just OFDM */
5725 modes
[A_11N
].num_channels
= 0;
5727 priv
->ieee_channels
= channels
;
5728 priv
->ieee_rates
= rates
;
5730 iwl_init_hw_rates(priv
, rates
);
5732 for (i
= 0, geo_ch
= channels
; i
< priv
->channel_count
; i
++) {
5733 ch
= &priv
->channel_info
[i
];
5735 if (!is_channel_valid(ch
)) {
5736 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5738 ch
->channel
, is_channel_a_band(ch
) ?
5743 if (is_channel_a_band(ch
)) {
5744 geo_ch
= &modes
[A
].channels
[modes
[A
].num_channels
++];
5745 modes
[A_11N
].num_channels
++;
5747 geo_ch
= &modes
[B
].channels
[modes
[B
].num_channels
++];
5748 modes
[G
].num_channels
++;
5749 modes
[G_11N
].num_channels
++;
5752 geo_ch
->freq
= ieee80211chan2mhz(ch
->channel
);
5753 geo_ch
->chan
= ch
->channel
;
5754 geo_ch
->power_level
= ch
->max_power_avg
;
5755 geo_ch
->antenna_max
= 0xff;
5757 if (is_channel_valid(ch
)) {
5758 geo_ch
->flag
= IEEE80211_CHAN_W_SCAN
;
5759 if (ch
->flags
& EEPROM_CHANNEL_IBSS
)
5760 geo_ch
->flag
|= IEEE80211_CHAN_W_IBSS
;
5762 if (ch
->flags
& EEPROM_CHANNEL_ACTIVE
)
5763 geo_ch
->flag
|= IEEE80211_CHAN_W_ACTIVE_SCAN
;
5765 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
5766 geo_ch
->flag
|= IEEE80211_CHAN_W_RADAR_DETECT
;
5768 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
5769 priv
->max_channel_txpower_limit
=
5773 geo_ch
->val
= geo_ch
->flag
;
5776 if ((modes
[A
].num_channels
== 0) && priv
->is_abg
) {
5777 printk(KERN_INFO DRV_NAME
5778 ": Incorrectly detected BG card as ABG. Please send "
5779 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5780 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
5784 printk(KERN_INFO DRV_NAME
5785 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5786 modes
[G
].num_channels
, modes
[A
].num_channels
);
5789 * NOTE: We register these in preference of order -- the
5790 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5791 * a phymode based on rates or AP capabilities but seems to
5792 * configure it purely on if the channel being configured
5793 * is supported by a mode -- and the first match is taken
5796 if (modes
[G
].num_channels
)
5797 ieee80211_register_hwmode(priv
->hw
, &modes
[G
]);
5798 if (modes
[B
].num_channels
)
5799 ieee80211_register_hwmode(priv
->hw
, &modes
[B
]);
5800 if (modes
[A
].num_channels
)
5801 ieee80211_register_hwmode(priv
->hw
, &modes
[A
]);
5803 priv
->modes
= modes
;
5804 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5809 /******************************************************************************
5811 * uCode download functions
5813 ******************************************************************************/
5815 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
5817 if (priv
->ucode_code
.v_addr
!= NULL
) {
5818 pci_free_consistent(priv
->pci_dev
,
5819 priv
->ucode_code
.len
,
5820 priv
->ucode_code
.v_addr
,
5821 priv
->ucode_code
.p_addr
);
5822 priv
->ucode_code
.v_addr
= NULL
;
5824 if (priv
->ucode_data
.v_addr
!= NULL
) {
5825 pci_free_consistent(priv
->pci_dev
,
5826 priv
->ucode_data
.len
,
5827 priv
->ucode_data
.v_addr
,
5828 priv
->ucode_data
.p_addr
);
5829 priv
->ucode_data
.v_addr
= NULL
;
5831 if (priv
->ucode_data_backup
.v_addr
!= NULL
) {
5832 pci_free_consistent(priv
->pci_dev
,
5833 priv
->ucode_data_backup
.len
,
5834 priv
->ucode_data_backup
.v_addr
,
5835 priv
->ucode_data_backup
.p_addr
);
5836 priv
->ucode_data_backup
.v_addr
= NULL
;
5838 if (priv
->ucode_init
.v_addr
!= NULL
) {
5839 pci_free_consistent(priv
->pci_dev
,
5840 priv
->ucode_init
.len
,
5841 priv
->ucode_init
.v_addr
,
5842 priv
->ucode_init
.p_addr
);
5843 priv
->ucode_init
.v_addr
= NULL
;
5845 if (priv
->ucode_init_data
.v_addr
!= NULL
) {
5846 pci_free_consistent(priv
->pci_dev
,
5847 priv
->ucode_init_data
.len
,
5848 priv
->ucode_init_data
.v_addr
,
5849 priv
->ucode_init_data
.p_addr
);
5850 priv
->ucode_init_data
.v_addr
= NULL
;
5852 if (priv
->ucode_boot
.v_addr
!= NULL
) {
5853 pci_free_consistent(priv
->pci_dev
,
5854 priv
->ucode_boot
.len
,
5855 priv
->ucode_boot
.v_addr
,
5856 priv
->ucode_boot
.p_addr
);
5857 priv
->ucode_boot
.v_addr
= NULL
;
5862 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5863 * looking at all data.
5865 static int iwl_verify_inst_full(struct iwl_priv
*priv
, __le32
* image
, u32 len
)
5872 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5874 rc
= iwl_grab_restricted_access(priv
);
5878 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5881 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5882 /* read data comes through single port, auto-incr addr */
5883 /* NOTE: Use the debugless read so we don't flood kernel log
5884 * if IWL_DL_IO is set */
5885 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5886 if (val
!= le32_to_cpu(*image
)) {
5887 IWL_ERROR("uCode INST section is invalid at "
5888 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5889 save_len
- len
, val
, le32_to_cpu(*image
));
5897 iwl_release_restricted_access(priv
);
5901 ("ucode image in INSTRUCTION memory is good\n");
5908 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5909 * using sample data 100 bytes apart. If these sample points are good,
5910 * it's a pretty good bet that everything between them is good, too.
5912 static int iwl_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5919 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5921 rc
= iwl_grab_restricted_access(priv
);
5925 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5926 /* read data comes through single port, auto-incr addr */
5927 /* NOTE: Use the debugless read so we don't flood kernel log
5928 * if IWL_DL_IO is set */
5929 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
,
5930 i
+ RTC_INST_LOWER_BOUND
);
5931 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5932 if (val
!= le32_to_cpu(*image
)) {
5933 #if 0 /* Enable this if you want to see details */
5934 IWL_ERROR("uCode INST section is invalid at "
5935 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5945 iwl_release_restricted_access(priv
);
5952 * iwl_verify_ucode - determine which instruction image is in SRAM,
5953 * and verify its contents
5955 static int iwl_verify_ucode(struct iwl_priv
*priv
)
5962 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5963 len
= priv
->ucode_boot
.len
;
5964 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5966 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5970 /* Try initialize */
5971 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5972 len
= priv
->ucode_init
.len
;
5973 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5975 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5979 /* Try runtime/protocol */
5980 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5981 len
= priv
->ucode_code
.len
;
5982 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5984 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5988 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5990 /* Show first several data entries in instruction SRAM.
5991 * Selection of bootstrap image is arbitrary. */
5992 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5993 len
= priv
->ucode_boot
.len
;
5994 rc
= iwl_verify_inst_full(priv
, image
, len
);
6000 /* check contents of special bootstrap uCode SRAM */
6001 static int iwl_verify_bsm(struct iwl_priv
*priv
)
6003 __le32
*image
= priv
->ucode_boot
.v_addr
;
6004 u32 len
= priv
->ucode_boot
.len
;
6008 IWL_DEBUG_INFO("Begin verify bsm\n");
6010 /* verify BSM SRAM contents */
6011 val
= iwl_read_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
);
6012 for (reg
= BSM_SRAM_LOWER_BOUND
;
6013 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
6014 reg
+= sizeof(u32
), image
++) {
6015 val
= iwl_read_restricted_reg(priv
, reg
);
6016 if (val
!= le32_to_cpu(*image
)) {
6017 IWL_ERROR("BSM uCode verification failed at "
6018 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6019 BSM_SRAM_LOWER_BOUND
,
6020 reg
- BSM_SRAM_LOWER_BOUND
, len
,
6021 val
, le32_to_cpu(*image
));
6026 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6032 * iwl_load_bsm - Load bootstrap instructions
6036 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6037 * in special SRAM that does not power down during RFKILL. When powering back
6038 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6039 * the bootstrap program into the on-board processor, and starts it.
6041 * The bootstrap program loads (via DMA) instructions and data for a new
6042 * program from host DRAM locations indicated by the host driver in the
6043 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6046 * When initializing the NIC, the host driver points the BSM to the
6047 * "initialize" uCode image. This uCode sets up some internal data, then
6048 * notifies host via "initialize alive" that it is complete.
6050 * The host then replaces the BSM_DRAM_* pointer values to point to the
6051 * normal runtime uCode instructions and a backup uCode data cache buffer
6052 * (filled initially with starting data values for the on-board processor),
6053 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6054 * which begins normal operation.
6056 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6057 * the backup data cache in DRAM before SRAM is powered down.
6059 * When powering back up, the BSM loads the bootstrap program. This reloads
6060 * the runtime uCode instructions and the backup data cache into SRAM,
6061 * and re-launches the runtime uCode from where it left off.
6063 static int iwl_load_bsm(struct iwl_priv
*priv
)
6065 __le32
*image
= priv
->ucode_boot
.v_addr
;
6066 u32 len
= priv
->ucode_boot
.len
;
6076 IWL_DEBUG_INFO("Begin load bsm\n");
6078 /* make sure bootstrap program is no larger than BSM's SRAM size */
6079 if (len
> IWL_MAX_BSM_SIZE
)
6082 /* Tell bootstrap uCode where to find the "Initialize" uCode
6083 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6084 * NOTE: iwl_initialize_alive_start() will replace these values,
6085 * after the "initialize" uCode has run, to point to
6086 * runtime/protocol instructions and backup data cache. */
6087 pinst
= priv
->ucode_init
.p_addr
>> 4;
6088 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
6089 inst_len
= priv
->ucode_init
.len
;
6090 data_len
= priv
->ucode_init_data
.len
;
6092 rc
= iwl_grab_restricted_access(priv
);
6096 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6097 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6098 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
6099 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
6101 /* Fill BSM memory with bootstrap instructions */
6102 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
6103 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
6104 reg_offset
+= sizeof(u32
), image
++)
6105 _iwl_write_restricted_reg(priv
, reg_offset
,
6106 le32_to_cpu(*image
));
6108 rc
= iwl_verify_bsm(priv
);
6110 iwl_release_restricted_access(priv
);
6114 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6115 iwl_write_restricted_reg(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
6116 iwl_write_restricted_reg(priv
, BSM_WR_MEM_DST_REG
,
6117 RTC_INST_LOWER_BOUND
);
6118 iwl_write_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
6120 /* Load bootstrap code into instruction SRAM now,
6121 * to prepare to load "initialize" uCode */
6122 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6123 BSM_WR_CTRL_REG_BIT_START
);
6125 /* Wait for load of bootstrap uCode to finish */
6126 for (i
= 0; i
< 100; i
++) {
6127 done
= iwl_read_restricted_reg(priv
, BSM_WR_CTRL_REG
);
6128 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
6133 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
6135 IWL_ERROR("BSM write did not complete!\n");
6139 /* Enable future boot loads whenever power management unit triggers it
6140 * (e.g. when powering back up after power-save shutdown) */
6141 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
6142 BSM_WR_CTRL_REG_BIT_START_EN
);
6144 iwl_release_restricted_access(priv
);
6149 static void iwl_nic_start(struct iwl_priv
*priv
)
6151 /* Remove all resets to allow NIC to operate */
6152 iwl_write32(priv
, CSR_RESET
, 0);
6156 * iwl_read_ucode - Read uCode images from disk file.
6158 * Copy into buffers for card to fetch via bus-mastering
6160 static int iwl_read_ucode(struct iwl_priv
*priv
)
6162 struct iwl_ucode
*ucode
;
6164 const struct firmware
*ucode_raw
;
6165 const char *name
= "iwlwifi-4965" IWL4965_UCODE_API
".ucode";
6168 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
6170 /* Ask kernel firmware_class module to get the boot firmware off disk.
6171 * request_firmware() is synchronous, file is in memory on return. */
6172 rc
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
6174 IWL_ERROR("%s firmware file req failed: Reason %d\n", name
, rc
);
6178 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6179 name
, ucode_raw
->size
);
6181 /* Make sure that we got at least our header! */
6182 if (ucode_raw
->size
< sizeof(*ucode
)) {
6183 IWL_ERROR("File size way too small!\n");
6188 /* Data from ucode file: header followed by uCode images */
6189 ucode
= (void *)ucode_raw
->data
;
6191 ver
= le32_to_cpu(ucode
->ver
);
6192 inst_size
= le32_to_cpu(ucode
->inst_size
);
6193 data_size
= le32_to_cpu(ucode
->data_size
);
6194 init_size
= le32_to_cpu(ucode
->init_size
);
6195 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
6196 boot_size
= le32_to_cpu(ucode
->boot_size
);
6198 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
6199 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6201 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6203 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6205 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6207 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6210 /* Verify size of file vs. image size info in file's header */
6211 if (ucode_raw
->size
< sizeof(*ucode
) +
6212 inst_size
+ data_size
+ init_size
+
6213 init_data_size
+ boot_size
) {
6215 IWL_DEBUG_INFO("uCode file size %d too small\n",
6216 (int)ucode_raw
->size
);
6221 /* Verify that uCode images will fit in card's SRAM */
6222 if (inst_size
> IWL_MAX_INST_SIZE
) {
6223 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6229 if (data_size
> IWL_MAX_DATA_SIZE
) {
6230 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6235 if (init_size
> IWL_MAX_INST_SIZE
) {
6237 ("uCode init instr len %d too large to fit in card\n",
6242 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
6244 ("uCode init data len %d too large to fit in card\n",
6245 (int)init_data_size
);
6249 if (boot_size
> IWL_MAX_BSM_SIZE
) {
6251 ("uCode boot instr len %d too large to fit in bsm\n",
6257 /* Allocate ucode buffers for card's bus-master loading ... */
6259 /* Runtime instructions and 2 copies of data:
6260 * 1) unmodified from disk
6261 * 2) backup cache for save/restore during power-downs */
6262 priv
->ucode_code
.len
= inst_size
;
6263 priv
->ucode_code
.v_addr
=
6264 pci_alloc_consistent(priv
->pci_dev
,
6265 priv
->ucode_code
.len
,
6266 &(priv
->ucode_code
.p_addr
));
6268 priv
->ucode_data
.len
= data_size
;
6269 priv
->ucode_data
.v_addr
=
6270 pci_alloc_consistent(priv
->pci_dev
,
6271 priv
->ucode_data
.len
,
6272 &(priv
->ucode_data
.p_addr
));
6274 priv
->ucode_data_backup
.len
= data_size
;
6275 priv
->ucode_data_backup
.v_addr
=
6276 pci_alloc_consistent(priv
->pci_dev
,
6277 priv
->ucode_data_backup
.len
,
6278 &(priv
->ucode_data_backup
.p_addr
));
6281 /* Initialization instructions and data */
6282 priv
->ucode_init
.len
= init_size
;
6283 priv
->ucode_init
.v_addr
=
6284 pci_alloc_consistent(priv
->pci_dev
,
6285 priv
->ucode_init
.len
,
6286 &(priv
->ucode_init
.p_addr
));
6288 priv
->ucode_init_data
.len
= init_data_size
;
6289 priv
->ucode_init_data
.v_addr
=
6290 pci_alloc_consistent(priv
->pci_dev
,
6291 priv
->ucode_init_data
.len
,
6292 &(priv
->ucode_init_data
.p_addr
));
6294 /* Bootstrap (instructions only, no data) */
6295 priv
->ucode_boot
.len
= boot_size
;
6296 priv
->ucode_boot
.v_addr
=
6297 pci_alloc_consistent(priv
->pci_dev
,
6298 priv
->ucode_boot
.len
,
6299 &(priv
->ucode_boot
.p_addr
));
6301 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
6302 !priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
||
6303 !priv
->ucode_boot
.v_addr
|| !priv
->ucode_data_backup
.v_addr
)
6306 /* Copy images into buffers for card's bus-master reads ... */
6308 /* Runtime instructions (first block of data in file) */
6309 src
= &ucode
->data
[0];
6310 len
= priv
->ucode_code
.len
;
6311 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6313 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
6314 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6315 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
6317 /* Runtime data (2nd block)
6318 * NOTE: Copy into backup buffer will be done in iwl_up() */
6319 src
= &ucode
->data
[inst_size
];
6320 len
= priv
->ucode_data
.len
;
6321 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6323 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
6324 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
6326 /* Initialization instructions (3rd block) */
6328 src
= &ucode
->data
[inst_size
+ data_size
];
6329 len
= priv
->ucode_init
.len
;
6330 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6332 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
6335 /* Initialization data (4th block) */
6336 if (init_data_size
) {
6337 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
6338 len
= priv
->ucode_init_data
.len
;
6339 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6341 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
6344 /* Bootstrap instructions (5th block) */
6345 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
6346 len
= priv
->ucode_boot
.len
;
6347 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6349 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
6351 /* We have our copies now, allow OS release its copies */
6352 release_firmware(ucode_raw
);
6356 IWL_ERROR("failed to allocate pci memory\n");
6358 iwl_dealloc_ucode_pci(priv
);
6361 release_firmware(ucode_raw
);
6369 * iwl_set_ucode_ptrs - Set uCode address location
6371 * Tell initialization uCode where to find runtime uCode.
6373 * BSM registers initially contain pointers to initialization uCode.
6374 * We need to replace them to load runtime uCode inst and data,
6375 * and to save runtime data when powering down.
6377 static int iwl_set_ucode_ptrs(struct iwl_priv
*priv
)
6382 unsigned long flags
;
6384 /* bits 35:4 for 4965 */
6385 pinst
= priv
->ucode_code
.p_addr
>> 4;
6386 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
6388 spin_lock_irqsave(&priv
->lock
, flags
);
6389 rc
= iwl_grab_restricted_access(priv
);
6391 spin_unlock_irqrestore(&priv
->lock
, flags
);
6395 /* Tell bootstrap uCode where to find image to load */
6396 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6397 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6398 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
6399 priv
->ucode_data
.len
);
6401 /* Inst bytecount must be last to set up, bit 31 signals uCode
6402 * that all new ptr/size info is in place */
6403 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
6404 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
6406 iwl_release_restricted_access(priv
);
6408 spin_unlock_irqrestore(&priv
->lock
, flags
);
6410 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6416 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6418 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6420 * The 4965 "initialize" ALIVE reply contains calibration data for:
6421 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6422 * (3945 does not contain this data).
6424 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6426 static void iwl_init_alive_start(struct iwl_priv
*priv
)
6428 /* Check alive response for "valid" sign from uCode */
6429 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
6430 /* We had an error bringing up the hardware, so take it
6431 * all the way back down so we can try again */
6432 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6436 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6437 * This is a paranoid check, because we would not have gotten the
6438 * "initialize" alive if code weren't properly loaded. */
6439 if (iwl_verify_ucode(priv
)) {
6440 /* Runtime instruction load was bad;
6441 * take it all the way back down so we can try again */
6442 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6446 /* Calculate temperature */
6447 priv
->temperature
= iwl4965_get_temperature(priv
);
6449 /* Send pointers to protocol/runtime uCode image ... init code will
6450 * load and launch runtime uCode, which will send us another "Alive"
6452 IWL_DEBUG_INFO("Initialization Alive received.\n");
6453 if (iwl_set_ucode_ptrs(priv
)) {
6454 /* Runtime instruction load won't happen;
6455 * take it all the way back down so we can try again */
6456 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6462 queue_work(priv
->workqueue
, &priv
->restart
);
6467 * iwl_alive_start - called after REPLY_ALIVE notification received
6468 * from protocol/runtime uCode (initialization uCode's
6469 * Alive gets handled by iwl_init_alive_start()).
6471 static void iwl_alive_start(struct iwl_priv
*priv
)
6475 IWL_DEBUG_INFO("Runtime Alive received.\n");
6477 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
6478 /* We had an error bringing up the hardware, so take it
6479 * all the way back down so we can try again */
6480 IWL_DEBUG_INFO("Alive failed.\n");
6484 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6485 * This is a paranoid check, because we would not have gotten the
6486 * "runtime" alive if code weren't properly loaded. */
6487 if (iwl_verify_ucode(priv
)) {
6488 /* Runtime instruction load was bad;
6489 * take it all the way back down so we can try again */
6490 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6494 iwl_clear_stations_table(priv
);
6496 rc
= iwl4965_alive_notify(priv
);
6498 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6503 /* After the ALIVE response, we can process host commands */
6504 set_bit(STATUS_ALIVE
, &priv
->status
);
6506 /* Clear out the uCode error bit if it is set */
6507 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
6509 rc
= iwl_init_channel_map(priv
);
6511 IWL_ERROR("initializing regulatory failed: %d\n", rc
);
6515 iwl_init_geos(priv
);
6517 if (iwl_is_rfkill(priv
))
6520 if (!priv
->mac80211_registered
) {
6521 /* Unlock so any user space entry points can call back into
6522 * the driver without a deadlock... */
6523 mutex_unlock(&priv
->mutex
);
6524 iwl_rate_control_register(priv
->hw
);
6525 rc
= ieee80211_register_hw(priv
->hw
);
6526 priv
->hw
->conf
.beacon_int
= 100;
6527 mutex_lock(&priv
->mutex
);
6530 IWL_ERROR("Failed to register network "
6531 "device (error %d)\n", rc
);
6535 priv
->mac80211_registered
= 1;
6537 iwl_reset_channel_flag(priv
);
6539 ieee80211_start_queues(priv
->hw
);
6541 priv
->active_rate
= priv
->rates_mask
;
6542 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
6544 iwl_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
6546 if (iwl_is_associated(priv
)) {
6547 struct iwl_rxon_cmd
*active_rxon
=
6548 (struct iwl_rxon_cmd
*)(&priv
->active_rxon
);
6550 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
6551 sizeof(priv
->staging_rxon
));
6552 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6554 /* Initialize our rx_config data */
6555 iwl_connection_init_rx_config(priv
);
6556 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
6559 /* Configure BT coexistence */
6560 iwl_send_bt_config(priv
);
6562 /* Configure the adapter for unassociated operation */
6563 iwl_commit_rxon(priv
);
6565 /* At this point, the NIC is initialized and operational */
6566 priv
->notif_missed_beacons
= 0;
6567 set_bit(STATUS_READY
, &priv
->status
);
6569 iwl4965_rf_kill_ct_config(priv
);
6570 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6572 if (priv
->error_recovering
)
6573 iwl_error_recovery(priv
);
6578 queue_work(priv
->workqueue
, &priv
->restart
);
6581 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
6583 static void __iwl_down(struct iwl_priv
*priv
)
6585 unsigned long flags
;
6586 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6587 struct ieee80211_conf
*conf
= NULL
;
6589 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
6591 conf
= ieee80211_get_hw_conf(priv
->hw
);
6594 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6596 iwl_clear_stations_table(priv
);
6598 /* Unblock any waiting calls */
6599 wake_up_interruptible_all(&priv
->wait_command_queue
);
6601 iwl_cancel_deferred_work(priv
);
6603 /* Wipe out the EXIT_PENDING status bit if we are not actually
6604 * exiting the module */
6606 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6608 /* stop and reset the on-board processor */
6609 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
6611 /* tell the device to stop sending interrupts */
6612 iwl_disable_interrupts(priv
);
6614 if (priv
->mac80211_registered
)
6615 ieee80211_stop_queues(priv
->hw
);
6617 /* If we have not previously called iwl_init() then
6618 * clear all bits but the RF Kill and SUSPEND bits and return */
6619 if (!iwl_is_init(priv
)) {
6620 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6622 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6624 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6629 /* ...otherwise clear out all the status bits but the RF Kill and
6630 * SUSPEND bits and continue taking the NIC down. */
6631 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6633 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6635 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6637 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
6640 spin_lock_irqsave(&priv
->lock
, flags
);
6641 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
6642 spin_unlock_irqrestore(&priv
->lock
, flags
);
6644 iwl_hw_txq_ctx_stop(priv
);
6645 iwl_hw_rxq_stop(priv
);
6647 spin_lock_irqsave(&priv
->lock
, flags
);
6648 if (!iwl_grab_restricted_access(priv
)) {
6649 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
6650 APMG_CLK_VAL_DMA_CLK_RQT
);
6651 iwl_release_restricted_access(priv
);
6653 spin_unlock_irqrestore(&priv
->lock
, flags
);
6657 iwl_hw_nic_stop_master(priv
);
6658 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
6659 iwl_hw_nic_reset(priv
);
6662 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
6664 if (priv
->ibss_beacon
)
6665 dev_kfree_skb(priv
->ibss_beacon
);
6666 priv
->ibss_beacon
= NULL
;
6668 /* clear out any free frames */
6669 iwl_clear_free_frames(priv
);
6672 static void iwl_down(struct iwl_priv
*priv
)
6674 mutex_lock(&priv
->mutex
);
6676 mutex_unlock(&priv
->mutex
);
6679 #define MAX_HW_RESTARTS 5
6681 static int __iwl_up(struct iwl_priv
*priv
)
6683 DECLARE_MAC_BUF(mac
);
6687 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6688 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6692 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
6693 IWL_WARNING("Radio disabled by SW RF kill (module "
6698 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6700 rc
= iwl_hw_nic_init(priv
);
6702 IWL_ERROR("Unable to int nic\n");
6706 /* make sure rfkill handshake bits are cleared */
6707 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6708 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
6709 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
6711 /* clear (again), then enable host interrupts */
6712 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6713 iwl_enable_interrupts(priv
);
6715 /* really make sure rfkill handshake bits are cleared */
6716 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6717 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6719 /* Copy original ucode data image from disk into backup cache.
6720 * This will be used to initialize the on-board processor's
6721 * data SRAM for a clean start when the runtime program first loads. */
6722 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
6723 priv
->ucode_data
.len
);
6725 /* If platform's RF_KILL switch is set to KILL,
6726 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6727 * and getting things started */
6728 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
6729 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
6732 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) || hw_rf_kill
) {
6733 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6737 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
6739 iwl_clear_stations_table(priv
);
6741 /* load bootstrap state machine,
6742 * load bootstrap program into processor's memory,
6743 * prepare to load the "initialize" uCode */
6744 rc
= iwl_load_bsm(priv
);
6747 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc
);
6751 /* start card; "initialize" will load runtime ucode */
6752 iwl_nic_start(priv
);
6754 /* MAC Address location in EEPROM same for 3945/4965 */
6755 get_eeprom_mac(priv
, priv
->mac_addr
);
6756 IWL_DEBUG_INFO("MAC address: %s\n",
6757 print_mac(mac
, priv
->mac_addr
));
6759 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
6761 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
6766 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6769 /* tried to restart and config the device for as long as our
6770 * patience could withstand */
6771 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
6776 /*****************************************************************************
6778 * Workqueue callbacks
6780 *****************************************************************************/
6782 static void iwl_bg_init_alive_start(struct work_struct
*data
)
6784 struct iwl_priv
*priv
=
6785 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
6787 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6790 mutex_lock(&priv
->mutex
);
6791 iwl_init_alive_start(priv
);
6792 mutex_unlock(&priv
->mutex
);
6795 static void iwl_bg_alive_start(struct work_struct
*data
)
6797 struct iwl_priv
*priv
=
6798 container_of(data
, struct iwl_priv
, alive_start
.work
);
6800 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6803 mutex_lock(&priv
->mutex
);
6804 iwl_alive_start(priv
);
6805 mutex_unlock(&priv
->mutex
);
6808 static void iwl_bg_rf_kill(struct work_struct
*work
)
6810 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
6812 wake_up_interruptible(&priv
->wait_command_queue
);
6814 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6817 mutex_lock(&priv
->mutex
);
6819 if (!iwl_is_rfkill(priv
)) {
6820 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
6821 "HW and/or SW RF Kill no longer active, restarting "
6823 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6824 queue_work(priv
->workqueue
, &priv
->restart
);
6827 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
6828 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6829 "disabled by SW switch\n");
6831 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6832 "Kill switch must be turned off for "
6833 "wireless networking to work.\n");
6835 mutex_unlock(&priv
->mutex
);
6838 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6840 static void iwl_bg_scan_check(struct work_struct
*data
)
6842 struct iwl_priv
*priv
=
6843 container_of(data
, struct iwl_priv
, scan_check
.work
);
6845 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6848 mutex_lock(&priv
->mutex
);
6849 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
6850 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6851 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
6852 "Scan completion watchdog resetting adapter (%dms)\n",
6853 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
6854 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6855 queue_work(priv
->workqueue
, &priv
->restart
);
6857 mutex_unlock(&priv
->mutex
);
6860 static void iwl_bg_request_scan(struct work_struct
*data
)
6862 struct iwl_priv
*priv
=
6863 container_of(data
, struct iwl_priv
, request_scan
);
6864 struct iwl_host_cmd cmd
= {
6865 .id
= REPLY_SCAN_CMD
,
6866 .len
= sizeof(struct iwl_scan_cmd
),
6867 .meta
.flags
= CMD_SIZE_HUGE
,
6870 struct iwl_scan_cmd
*scan
;
6871 struct ieee80211_conf
*conf
= NULL
;
6875 conf
= ieee80211_get_hw_conf(priv
->hw
);
6877 mutex_lock(&priv
->mutex
);
6879 if (!iwl_is_ready(priv
)) {
6880 IWL_WARNING("request scan called when driver not ready.\n");
6884 /* Make sure the scan wasn't cancelled before this queued work
6885 * was given the chance to run... */
6886 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
6889 /* This should never be called or scheduled if there is currently
6890 * a scan active in the hardware. */
6891 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
6892 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6893 "Ignoring second request.\n");
6898 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6899 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6903 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6904 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6908 if (iwl_is_rfkill(priv
)) {
6909 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6913 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6914 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6918 if (!priv
->scan_bands
) {
6919 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6924 priv
->scan
= kmalloc(sizeof(struct iwl_scan_cmd
) +
6925 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
6932 memset(scan
, 0, sizeof(struct iwl_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
6934 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
6935 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
6937 if (iwl_is_associated(priv
)) {
6940 u32 suspend_time
= 100;
6941 u32 scan_suspend_time
= 100;
6942 unsigned long flags
;
6944 IWL_DEBUG_INFO("Scanning while associated...\n");
6946 spin_lock_irqsave(&priv
->lock
, flags
);
6947 interval
= priv
->beacon_int
;
6948 spin_unlock_irqrestore(&priv
->lock
, flags
);
6950 scan
->suspend_time
= 0;
6951 scan
->max_out_time
= cpu_to_le32(600 * 1024);
6953 interval
= suspend_time
;
6955 extra
= (suspend_time
/ interval
) << 22;
6956 scan_suspend_time
= (extra
|
6957 ((suspend_time
% interval
) * 1024));
6958 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
6959 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6960 scan_suspend_time
, interval
);
6963 /* We should add the ability for user to lock to PASSIVE ONLY */
6964 if (priv
->one_direct_scan
) {
6966 ("Kicking off one direct scan for '%s'\n",
6967 iwl_escape_essid(priv
->direct_ssid
,
6968 priv
->direct_ssid_len
));
6969 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6970 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
6971 memcpy(scan
->direct_scan
[0].ssid
,
6972 priv
->direct_ssid
, priv
->direct_ssid_len
);
6974 } else if (!iwl_is_associated(priv
)) {
6975 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6976 scan
->direct_scan
[0].len
= priv
->essid_len
;
6977 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
6982 /* We don't build a direct scan probe request; the uCode will do
6983 * that based on the direct_mask added to each channel entry */
6984 scan
->tx_cmd
.len
= cpu_to_le16(
6985 iwl_fill_probe_req(priv
, (struct ieee80211_mgmt
*)scan
->data
,
6986 IWL_MAX_SCAN_SIZE
- sizeof(scan
), 0));
6987 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6988 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6989 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6991 /* flags + rate selection */
6993 scan
->tx_cmd
.tx_flags
|= cpu_to_le32(0x200);
6995 switch (priv
->scan_bands
) {
6997 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6998 scan
->tx_cmd
.rate_n_flags
=
6999 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
7000 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
7002 scan
->good_CRC_th
= 0;
7003 phymode
= MODE_IEEE80211G
;
7007 scan
->tx_cmd
.rate_n_flags
=
7008 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
7009 RATE_MCS_ANT_B_MSK
);
7010 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
7011 phymode
= MODE_IEEE80211A
;
7015 IWL_WARNING("Invalid scan band count\n");
7019 /* select Rx chains */
7021 /* Force use of chains B and C (0x6) for scan Rx.
7022 * Avoid A (0x1) because of its off-channel reception on A-band.
7023 * MIMO is not used here, but value is required to make uCode happy. */
7024 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
7025 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
7026 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
7027 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
7029 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
7030 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
7034 ("Initiating direct scan for %s.\n",
7035 iwl_escape_essid(priv
->essid
, priv
->essid_len
));
7037 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7039 scan
->channel_count
=
7040 iwl_get_channels_for_scan(
7041 priv
, phymode
, 1, /* active */
7043 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
7045 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
7046 scan
->channel_count
* sizeof(struct iwl_scan_channel
);
7048 scan
->len
= cpu_to_le16(cmd
.len
);
7050 set_bit(STATUS_SCAN_HW
, &priv
->status
);
7051 rc
= iwl_send_cmd_sync(priv
, &cmd
);
7055 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
7056 IWL_SCAN_CHECK_WATCHDOG
);
7058 mutex_unlock(&priv
->mutex
);
7062 /* inform mac80211 sacn aborted */
7063 queue_work(priv
->workqueue
, &priv
->scan_completed
);
7064 mutex_unlock(&priv
->mutex
);
7067 static void iwl_bg_up(struct work_struct
*data
)
7069 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
7071 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7074 mutex_lock(&priv
->mutex
);
7076 mutex_unlock(&priv
->mutex
);
7079 static void iwl_bg_restart(struct work_struct
*data
)
7081 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
7083 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7087 queue_work(priv
->workqueue
, &priv
->up
);
7090 static void iwl_bg_rx_replenish(struct work_struct
*data
)
7092 struct iwl_priv
*priv
=
7093 container_of(data
, struct iwl_priv
, rx_replenish
);
7095 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7098 mutex_lock(&priv
->mutex
);
7099 iwl_rx_replenish(priv
);
7100 mutex_unlock(&priv
->mutex
);
7103 static void iwl_bg_post_associate(struct work_struct
*data
)
7105 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
7106 post_associate
.work
);
7109 struct ieee80211_conf
*conf
= NULL
;
7110 DECLARE_MAC_BUF(mac
);
7112 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7113 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
7117 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7119 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
7122 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7125 mutex_lock(&priv
->mutex
);
7127 conf
= ieee80211_get_hw_conf(priv
->hw
);
7129 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7130 iwl_commit_rxon(priv
);
7132 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7133 iwl_setup_rxon_timing(priv
);
7134 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7135 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7137 IWL_WARNING("REPLY_RXON_TIMING failed - "
7138 "Attempting to continue.\n");
7140 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7142 #ifdef CONFIG_IWLWIFI_HT
7143 if (priv
->is_ht_enabled
&& priv
->current_assoc_ht
.is_ht
)
7144 iwl4965_set_rxon_ht(priv
, &priv
->current_assoc_ht
);
7146 priv
->active_rate_ht
[0] = 0;
7147 priv
->active_rate_ht
[1] = 0;
7148 priv
->current_channel_width
= IWL_CHANNEL_WIDTH_20MHZ
;
7150 #endif /* CONFIG_IWLWIFI_HT*/
7151 iwl4965_set_rxon_chain(priv
);
7152 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7154 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7155 priv
->assoc_id
, priv
->beacon_int
);
7157 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7158 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
7160 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7162 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7163 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7164 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
7166 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7168 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7169 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
7173 iwl_commit_rxon(priv
);
7175 switch (priv
->iw_mode
) {
7176 case IEEE80211_IF_TYPE_STA
:
7177 iwl_rate_scale_init(priv
->hw
, IWL_AP_ID
);
7180 case IEEE80211_IF_TYPE_IBSS
:
7182 /* clear out the station table */
7183 iwl_clear_stations_table(priv
);
7185 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7186 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
7187 iwl_rate_scale_init(priv
->hw
, IWL_STA_ID
);
7188 iwl_send_beacon_cmd(priv
);
7193 IWL_ERROR("%s Should not be called in %d mode\n",
7194 __FUNCTION__
, priv
->iw_mode
);
7198 iwl_sequence_reset(priv
);
7200 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7201 /* Enable Rx differential gain and sensitivity calibrations */
7202 iwl4965_chain_noise_reset(priv
);
7203 priv
->start_calib
= 1;
7204 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7206 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7207 priv
->assoc_station_added
= 1;
7209 #ifdef CONFIG_IWLWIFI_QOS
7210 iwl_activate_qos(priv
, 0);
7211 #endif /* CONFIG_IWLWIFI_QOS */
7212 mutex_unlock(&priv
->mutex
);
7215 static void iwl_bg_abort_scan(struct work_struct
*work
)
7217 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
7220 if (!iwl_is_ready(priv
))
7223 mutex_lock(&priv
->mutex
);
7225 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
7226 iwl_send_scan_abort(priv
);
7228 mutex_unlock(&priv
->mutex
);
7231 static void iwl_bg_scan_completed(struct work_struct
*work
)
7233 struct iwl_priv
*priv
=
7234 container_of(work
, struct iwl_priv
, scan_completed
);
7236 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
7238 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
7241 ieee80211_scan_completed(priv
->hw
);
7243 /* Since setting the TXPOWER may have been deferred while
7244 * performing the scan, fire one off */
7245 mutex_lock(&priv
->mutex
);
7246 iwl_hw_reg_send_txpower(priv
);
7247 mutex_unlock(&priv
->mutex
);
7250 /*****************************************************************************
7252 * mac80211 entry point functions
7254 *****************************************************************************/
7256 static int iwl_mac_start(struct ieee80211_hw
*hw
)
7258 struct iwl_priv
*priv
= hw
->priv
;
7260 IWL_DEBUG_MAC80211("enter\n");
7262 /* we should be verifying the device is ready to be opened */
7263 mutex_lock(&priv
->mutex
);
7267 if (!iwl_is_rfkill(priv
))
7268 ieee80211_start_queues(priv
->hw
);
7270 mutex_unlock(&priv
->mutex
);
7271 IWL_DEBUG_MAC80211("leave\n");
7275 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
7277 struct iwl_priv
*priv
= hw
->priv
;
7279 IWL_DEBUG_MAC80211("enter\n");
7281 /*netif_stop_queue(dev); */
7282 flush_workqueue(priv
->workqueue
);
7283 IWL_DEBUG_MAC80211("leave\n");
7286 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7287 struct ieee80211_tx_control
*ctl
)
7289 struct iwl_priv
*priv
= hw
->priv
;
7291 IWL_DEBUG_MAC80211("enter\n");
7293 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
7294 IWL_DEBUG_MAC80211("leave - monitor\n");
7298 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
7301 if (iwl_tx_skb(priv
, skb
, ctl
))
7302 dev_kfree_skb_any(skb
);
7304 IWL_DEBUG_MAC80211("leave\n");
7308 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
7309 struct ieee80211_if_init_conf
*conf
)
7311 struct iwl_priv
*priv
= hw
->priv
;
7312 unsigned long flags
;
7313 DECLARE_MAC_BUF(mac
);
7315 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf
->if_id
, conf
->type
);
7317 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7318 print_mac(mac
, conf
->mac_addr
));
7320 if (priv
->interface_id
) {
7321 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7325 spin_lock_irqsave(&priv
->lock
, flags
);
7326 priv
->interface_id
= conf
->if_id
;
7328 spin_unlock_irqrestore(&priv
->lock
, flags
);
7330 mutex_lock(&priv
->mutex
);
7331 iwl_set_mode(priv
, conf
->type
);
7333 IWL_DEBUG_MAC80211("leave\n");
7334 mutex_unlock(&priv
->mutex
);
7340 * iwl_mac_config - mac80211 config callback
7342 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7343 * be set inappropriately and the driver currently sets the hardware up to
7344 * use it whenever needed.
7346 static int iwl_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
7348 struct iwl_priv
*priv
= hw
->priv
;
7349 const struct iwl_channel_info
*ch_info
;
7350 unsigned long flags
;
7352 mutex_lock(&priv
->mutex
);
7353 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
);
7355 if (!iwl_is_ready(priv
)) {
7356 IWL_DEBUG_MAC80211("leave - not ready\n");
7357 mutex_unlock(&priv
->mutex
);
7361 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7362 * what is exposed through include/ declrations */
7363 if (unlikely(!iwl_param_disable_hw_scan
&&
7364 test_bit(STATUS_SCANNING
, &priv
->status
))) {
7365 IWL_DEBUG_MAC80211("leave - scanning\n");
7366 mutex_unlock(&priv
->mutex
);
7370 spin_lock_irqsave(&priv
->lock
, flags
);
7372 ch_info
= iwl_get_channel_info(priv
, conf
->phymode
, conf
->channel
);
7373 if (!is_channel_valid(ch_info
)) {
7374 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7375 conf
->channel
, conf
->phymode
);
7376 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7377 spin_unlock_irqrestore(&priv
->lock
, flags
);
7378 mutex_unlock(&priv
->mutex
);
7382 #ifdef CONFIG_IWLWIFI_HT
7383 /* if we are switching fron ht to 2.4 clear flags
7384 * from any ht related info since 2.4 does not
7386 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
)
7387 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7388 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
7391 priv
->staging_rxon
.flags
= 0;
7392 #endif /* CONFIG_IWLWIFI_HT */
7394 iwl_set_rxon_channel(priv
, conf
->phymode
, conf
->channel
);
7396 iwl_set_flags_for_phymode(priv
, conf
->phymode
);
7398 /* The list of supported rates and rate mask can be different
7399 * for each phymode; since the phymode may have changed, reset
7400 * the rate mask to what mac80211 lists */
7403 spin_unlock_irqrestore(&priv
->lock
, flags
);
7405 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7406 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
7407 iwl_hw_channel_switch(priv
, conf
->channel
);
7408 mutex_unlock(&priv
->mutex
);
7413 iwl_radio_kill_sw(priv
, !conf
->radio_enabled
);
7415 if (!conf
->radio_enabled
) {
7416 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7417 mutex_unlock(&priv
->mutex
);
7421 if (iwl_is_rfkill(priv
)) {
7422 IWL_DEBUG_MAC80211("leave - RF kill\n");
7423 mutex_unlock(&priv
->mutex
);
7429 if (memcmp(&priv
->active_rxon
,
7430 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
7431 iwl_commit_rxon(priv
);
7433 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7435 IWL_DEBUG_MAC80211("leave\n");
7437 mutex_unlock(&priv
->mutex
);
7442 static void iwl_config_ap(struct iwl_priv
*priv
)
7446 if (priv
->status
& STATUS_EXIT_PENDING
)
7449 /* The following should be done only at AP bring up */
7450 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
7452 /* RXON - unassoc (to set timing command) */
7453 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7454 iwl_commit_rxon(priv
);
7457 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7458 iwl_setup_rxon_timing(priv
);
7459 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7460 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7462 IWL_WARNING("REPLY_RXON_TIMING failed - "
7463 "Attempting to continue.\n");
7465 iwl4965_set_rxon_chain(priv
);
7467 /* FIXME: what should be the assoc_id for AP? */
7468 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7469 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7470 priv
->staging_rxon
.flags
|=
7471 RXON_FLG_SHORT_PREAMBLE_MSK
;
7473 priv
->staging_rxon
.flags
&=
7474 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7476 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7477 if (priv
->assoc_capability
&
7478 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7479 priv
->staging_rxon
.flags
|=
7480 RXON_FLG_SHORT_SLOT_MSK
;
7482 priv
->staging_rxon
.flags
&=
7483 ~RXON_FLG_SHORT_SLOT_MSK
;
7485 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7486 priv
->staging_rxon
.flags
&=
7487 ~RXON_FLG_SHORT_SLOT_MSK
;
7489 /* restore RXON assoc */
7490 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7491 iwl_commit_rxon(priv
);
7492 #ifdef CONFIG_IWLWIFI_QOS
7493 iwl_activate_qos(priv
, 1);
7495 iwl_rxon_add_station(priv
, BROADCAST_ADDR
, 0);
7496 iwl_send_beacon_cmd(priv
);
7498 iwl_send_beacon_cmd(priv
);
7500 /* FIXME - we need to add code here to detect a totally new
7501 * configuration, reset the AP, unassoc, rxon timing, assoc,
7502 * clear sta table, add BCAST sta... */
7505 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
, int if_id
,
7506 struct ieee80211_if_conf
*conf
)
7508 struct iwl_priv
*priv
= hw
->priv
;
7509 DECLARE_MAC_BUF(mac
);
7510 unsigned long flags
;
7516 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
7517 (!conf
->beacon
|| !conf
->ssid_len
)) {
7519 ("Leaving in AP mode because HostAPD is not ready.\n");
7523 mutex_lock(&priv
->mutex
);
7525 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id
);
7527 IWL_DEBUG_MAC80211("bssid: %s\n",
7528 print_mac(mac
, conf
->bssid
));
7531 * very dubious code was here; the probe filtering flag is never set:
7533 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7534 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7536 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
7537 IWL_DEBUG_MAC80211("leave - scanning\n");
7538 mutex_unlock(&priv
->mutex
);
7542 if (priv
->interface_id
!= if_id
) {
7543 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7544 mutex_unlock(&priv
->mutex
);
7548 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7550 conf
->bssid
= priv
->mac_addr
;
7551 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
7552 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7553 print_mac(mac
, conf
->bssid
));
7555 if (priv
->ibss_beacon
)
7556 dev_kfree_skb(priv
->ibss_beacon
);
7558 priv
->ibss_beacon
= conf
->beacon
;
7561 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
7562 !is_multicast_ether_addr(conf
->bssid
)) {
7563 /* If there is currently a HW scan going on in the background
7564 * then we need to cancel it else the RXON below will fail. */
7565 if (iwl_scan_cancel_timeout(priv
, 100)) {
7566 IWL_WARNING("Aborted scan still in progress "
7568 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7569 mutex_unlock(&priv
->mutex
);
7572 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
7574 /* TODO: Audit driver for usage of these members and see
7575 * if mac80211 deprecates them (priv->bssid looks like it
7576 * shouldn't be there, but I haven't scanned the IBSS code
7577 * to verify) - jpk */
7578 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
7580 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7581 iwl_config_ap(priv
);
7583 priv
->staging_rxon
.filter_flags
|=
7584 RXON_FILTER_ASSOC_MSK
;
7585 rc
= iwl_commit_rxon(priv
);
7586 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
7587 iwl_rxon_add_station(
7588 priv
, priv
->active_rxon
.bssid_addr
, 1);
7592 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7593 iwl_commit_rxon(priv
);
7596 spin_lock_irqsave(&priv
->lock
, flags
);
7597 if (!conf
->ssid_len
)
7598 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7600 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
7602 priv
->essid_len
= conf
->ssid_len
;
7603 spin_unlock_irqrestore(&priv
->lock
, flags
);
7605 IWL_DEBUG_MAC80211("leave\n");
7606 mutex_unlock(&priv
->mutex
);
7611 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
7612 unsigned int changed_flags
,
7613 unsigned int *total_flags
,
7614 int mc_count
, struct dev_addr_list
*mc_list
)
7618 * see also iwl_connection_init_rx_config
7623 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
7624 struct ieee80211_if_init_conf
*conf
)
7626 struct iwl_priv
*priv
= hw
->priv
;
7628 IWL_DEBUG_MAC80211("enter\n");
7630 mutex_lock(&priv
->mutex
);
7631 if (priv
->interface_id
== conf
->if_id
) {
7632 priv
->interface_id
= 0;
7633 memset(priv
->bssid
, 0, ETH_ALEN
);
7634 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7635 priv
->essid_len
= 0;
7637 mutex_unlock(&priv
->mutex
);
7639 IWL_DEBUG_MAC80211("leave\n");
7643 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7644 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
7647 unsigned long flags
;
7648 struct iwl_priv
*priv
= hw
->priv
;
7650 IWL_DEBUG_MAC80211("enter\n");
7652 spin_lock_irqsave(&priv
->lock
, flags
);
7654 if (!iwl_is_ready_rf(priv
)) {
7656 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7660 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
7662 IWL_ERROR("ERROR: APs don't scan\n");
7666 /* if we just finished scan ask for delay */
7667 if (priv
->last_scan_jiffies
&&
7668 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
,
7674 IWL_DEBUG_SCAN("direct scan for "
7676 iwl_escape_essid(ssid
, len
), (int)len
);
7678 priv
->one_direct_scan
= 1;
7679 priv
->direct_ssid_len
= (u8
)
7680 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
7681 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
7684 rc
= iwl_scan_initiate(priv
);
7686 IWL_DEBUG_MAC80211("leave\n");
7689 spin_unlock_irqrestore(&priv
->lock
, flags
);
7694 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
7695 const u8
*local_addr
, const u8
*addr
,
7696 struct ieee80211_key_conf
*key
)
7698 struct iwl_priv
*priv
= hw
->priv
;
7699 DECLARE_MAC_BUF(mac
);
7703 IWL_DEBUG_MAC80211("enter\n");
7705 if (!iwl_param_hwcrypto
) {
7706 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7710 if (is_zero_ether_addr(addr
))
7711 /* only support pairwise keys */
7714 sta_id
= iwl_hw_find_station(priv
, addr
);
7715 if (sta_id
== IWL_INVALID_STATION
) {
7716 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7717 print_mac(mac
, addr
));
7721 mutex_lock(&priv
->mutex
);
7725 rc
= iwl_update_sta_key_info(priv
, key
, sta_id
);
7727 iwl_set_rxon_hwcrypto(priv
, 1);
7728 iwl_commit_rxon(priv
);
7729 key
->hw_key_idx
= sta_id
;
7730 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7731 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
7735 rc
= iwl_clear_sta_key_info(priv
, sta_id
);
7737 iwl_set_rxon_hwcrypto(priv
, 0);
7738 iwl_commit_rxon(priv
);
7739 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7746 IWL_DEBUG_MAC80211("leave\n");
7747 mutex_unlock(&priv
->mutex
);
7752 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7753 const struct ieee80211_tx_queue_params
*params
)
7755 struct iwl_priv
*priv
= hw
->priv
;
7756 #ifdef CONFIG_IWLWIFI_QOS
7757 unsigned long flags
;
7759 #endif /* CONFIG_IWL_QOS */
7761 IWL_DEBUG_MAC80211("enter\n");
7763 if (!iwl_is_ready_rf(priv
)) {
7764 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7768 if (queue
>= AC_NUM
) {
7769 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7773 #ifdef CONFIG_IWLWIFI_QOS
7774 if (!priv
->qos_data
.qos_enable
) {
7775 priv
->qos_data
.qos_active
= 0;
7776 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7779 q
= AC_NUM
- 1 - queue
;
7781 spin_lock_irqsave(&priv
->lock
, flags
);
7783 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7784 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7785 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7786 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7787 cpu_to_le16((params
->burst_time
* 100));
7789 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7790 priv
->qos_data
.qos_active
= 1;
7792 spin_unlock_irqrestore(&priv
->lock
, flags
);
7794 mutex_lock(&priv
->mutex
);
7795 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7796 iwl_activate_qos(priv
, 1);
7797 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7798 iwl_activate_qos(priv
, 0);
7800 mutex_unlock(&priv
->mutex
);
7802 #endif /*CONFIG_IWLWIFI_QOS */
7804 IWL_DEBUG_MAC80211("leave\n");
7808 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7809 struct ieee80211_tx_queue_stats
*stats
)
7811 struct iwl_priv
*priv
= hw
->priv
;
7813 struct iwl_tx_queue
*txq
;
7814 struct iwl_queue
*q
;
7815 unsigned long flags
;
7817 IWL_DEBUG_MAC80211("enter\n");
7819 if (!iwl_is_ready_rf(priv
)) {
7820 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7824 spin_lock_irqsave(&priv
->lock
, flags
);
7826 for (i
= 0; i
< AC_NUM
; i
++) {
7827 txq
= &priv
->txq
[i
];
7829 avail
= iwl_queue_space(q
);
7831 stats
->data
[i
].len
= q
->n_window
- avail
;
7832 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7833 stats
->data
[i
].count
= q
->n_window
;
7836 spin_unlock_irqrestore(&priv
->lock
, flags
);
7838 IWL_DEBUG_MAC80211("leave\n");
7843 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
7844 struct ieee80211_low_level_stats
*stats
)
7846 IWL_DEBUG_MAC80211("enter\n");
7847 IWL_DEBUG_MAC80211("leave\n");
7852 static u64
iwl_mac_get_tsf(struct ieee80211_hw
*hw
)
7854 IWL_DEBUG_MAC80211("enter\n");
7855 IWL_DEBUG_MAC80211("leave\n");
7860 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
7862 struct iwl_priv
*priv
= hw
->priv
;
7863 unsigned long flags
;
7865 mutex_lock(&priv
->mutex
);
7866 IWL_DEBUG_MAC80211("enter\n");
7868 priv
->lq_mngr
.lq_ready
= 0;
7869 #ifdef CONFIG_IWLWIFI_HT
7870 spin_lock_irqsave(&priv
->lock
, flags
);
7871 memset(&priv
->current_assoc_ht
, 0, sizeof(struct sta_ht_info
));
7872 spin_unlock_irqrestore(&priv
->lock
, flags
);
7873 #ifdef CONFIG_IWLWIFI_HT_AGG
7874 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7875 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7877 memset(&(priv
->lq_mngr
.agg_ctrl
), 0, sizeof(struct iwl_agg_control
));
7878 priv
->lq_mngr
.agg_ctrl
.tid_traffic_load_threshold
= 10;
7879 priv
->lq_mngr
.agg_ctrl
.ba_timeout
= 5000;
7880 priv
->lq_mngr
.agg_ctrl
.auto_agg
= 1;
7882 if (priv
->lq_mngr
.agg_ctrl
.auto_agg
)
7883 priv
->lq_mngr
.agg_ctrl
.requested_ba
= TID_ALL_ENABLED
;
7884 #endif /*CONFIG_IWLWIFI_HT_AGG */
7885 #endif /* CONFIG_IWLWIFI_HT */
7887 #ifdef CONFIG_IWLWIFI_QOS
7888 iwl_reset_qos(priv
);
7891 cancel_delayed_work(&priv
->post_associate
);
7893 spin_lock_irqsave(&priv
->lock
, flags
);
7895 priv
->assoc_capability
= 0;
7896 priv
->call_post_assoc_from_beacon
= 0;
7897 priv
->assoc_station_added
= 0;
7899 /* new association get rid of ibss beacon skb */
7900 if (priv
->ibss_beacon
)
7901 dev_kfree_skb(priv
->ibss_beacon
);
7903 priv
->ibss_beacon
= NULL
;
7905 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7906 priv
->timestamp1
= 0;
7907 priv
->timestamp0
= 0;
7908 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7909 priv
->beacon_int
= 0;
7911 spin_unlock_irqrestore(&priv
->lock
, flags
);
7913 /* Per mac80211.h: This is only used in IBSS mode... */
7914 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7915 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7916 mutex_unlock(&priv
->mutex
);
7920 if (!iwl_is_ready_rf(priv
)) {
7921 IWL_DEBUG_MAC80211("leave - not ready\n");
7922 mutex_unlock(&priv
->mutex
);
7926 priv
->only_active_channel
= 0;
7930 mutex_unlock(&priv
->mutex
);
7932 IWL_DEBUG_MAC80211("leave\n");
7936 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7937 struct ieee80211_tx_control
*control
)
7939 struct iwl_priv
*priv
= hw
->priv
;
7940 unsigned long flags
;
7942 mutex_lock(&priv
->mutex
);
7943 IWL_DEBUG_MAC80211("enter\n");
7945 if (!iwl_is_ready_rf(priv
)) {
7946 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7947 mutex_unlock(&priv
->mutex
);
7951 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7952 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7953 mutex_unlock(&priv
->mutex
);
7957 spin_lock_irqsave(&priv
->lock
, flags
);
7959 if (priv
->ibss_beacon
)
7960 dev_kfree_skb(priv
->ibss_beacon
);
7962 priv
->ibss_beacon
= skb
;
7966 IWL_DEBUG_MAC80211("leave\n");
7967 spin_unlock_irqrestore(&priv
->lock
, flags
);
7969 #ifdef CONFIG_IWLWIFI_QOS
7970 iwl_reset_qos(priv
);
7973 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
7975 mutex_unlock(&priv
->mutex
);
7980 #ifdef CONFIG_IWLWIFI_HT
7983 u16 advanced_coding_cap
:1;
7984 u16 supported_chan_width_set
:1;
7985 u16 mimo_power_save_mode
:2;
7991 u16 beam_forming
:1;
7993 u16 maximal_amsdu_size
:1;
7994 u16 cck_mode_at_40MHz
:1;
7995 u16 psmp_support
:1;
7996 u16 stbc_ctrl_frame_support
:1;
7997 u16 sig_txop_protection_support
:1;
8000 } __attribute__ ((packed
));
8002 union ht_param_info
{
8004 u8 max_rx_ampdu_factor
:2;
8009 } __attribute__ ((packed
));
8011 union ht_exra_param_info
{
8013 u8 ext_chan_offset
:2;
8014 u8 tx_chan_width
:1;
8016 u8 controlled_access_only
:1;
8017 u8 service_interval_granularity
:3;
8020 } __attribute__ ((packed
));
8022 union ht_operation_mode
{
8029 } __attribute__ ((packed
));
8032 static int sta_ht_info_init(struct ieee80211_ht_capability
*ht_cap
,
8033 struct ieee80211_ht_additional_info
*ht_extra
,
8034 struct sta_ht_info
*ht_info_ap
,
8035 struct sta_ht_info
*ht_info
)
8037 union ht_cap_info cap
;
8038 union ht_operation_mode op_mode
;
8039 union ht_param_info param_info
;
8040 union ht_exra_param_info extra_param_info
;
8042 IWL_DEBUG_MAC80211("enter: \n");
8045 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8050 cap
.val
= (u16
) le16_to_cpu(ht_cap
->capabilities_info
);
8051 param_info
.val
= ht_cap
->mac_ht_params_info
;
8054 ht_info
->sgf
|= 0x1;
8056 ht_info
->sgf
|= 0x2;
8057 ht_info
->is_green_field
= cap
.green_field
;
8058 ht_info
->max_amsdu_size
= cap
.maximal_amsdu_size
;
8059 ht_info
->supported_chan_width
= cap
.supported_chan_width_set
;
8060 ht_info
->tx_mimo_ps_mode
= cap
.mimo_power_save_mode
;
8061 memcpy(ht_info
->supp_rates
, ht_cap
->supported_mcs_set
, 16);
8063 ht_info
->ampdu_factor
= param_info
.max_rx_ampdu_factor
;
8064 ht_info
->mpdu_density
= param_info
.mpdu_density
;
8066 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8067 ht_cap
->supported_mcs_set
[0],
8068 ht_cap
->supported_mcs_set
[1]);
8071 ht_info
->control_channel
= ht_info_ap
->control_channel
;
8072 ht_info
->extension_chan_offset
=
8073 ht_info_ap
->extension_chan_offset
;
8074 ht_info
->tx_chan_width
= ht_info_ap
->tx_chan_width
;
8075 ht_info
->operating_mode
= ht_info_ap
->operating_mode
;
8079 extra_param_info
.val
= ht_extra
->ht_param
;
8080 ht_info
->control_channel
= ht_extra
->control_chan
;
8081 ht_info
->extension_chan_offset
=
8082 extra_param_info
.ext_chan_offset
;
8083 ht_info
->tx_chan_width
= extra_param_info
.tx_chan_width
;
8085 le16_to_cpu(ht_extra
->operation_mode
);
8086 ht_info
->operating_mode
= op_mode
.op_mode
;
8087 IWL_DEBUG_MAC80211("control channel %d\n",
8088 ht_extra
->control_chan
);
8093 IWL_DEBUG_MAC80211("leave\n");
8097 static int iwl_mac_conf_ht(struct ieee80211_hw
*hw
,
8098 struct ieee80211_ht_capability
*ht_cap
,
8099 struct ieee80211_ht_additional_info
*ht_extra
)
8101 struct iwl_priv
*priv
= hw
->priv
;
8104 IWL_DEBUG_MAC80211("enter: \n");
8106 rs
= sta_ht_info_init(ht_cap
, ht_extra
, NULL
, &priv
->current_assoc_ht
);
8107 iwl4965_set_rxon_chain(priv
);
8109 if (priv
&& priv
->assoc_id
&&
8110 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
8111 unsigned long flags
;
8113 spin_lock_irqsave(&priv
->lock
, flags
);
8114 if (priv
->beacon_int
)
8115 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
8117 priv
->call_post_assoc_from_beacon
= 1;
8118 spin_unlock_irqrestore(&priv
->lock
, flags
);
8121 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8122 ht_extra
->control_chan
);
8127 static void iwl_set_ht_capab(struct ieee80211_hw
*hw
,
8128 struct ieee80211_ht_capability
*ht_cap
,
8131 union ht_cap_info cap
;
8132 union ht_param_info param_info
;
8134 memset(&cap
, 0, sizeof(union ht_cap_info
));
8135 memset(¶m_info
, 0, sizeof(union ht_param_info
));
8137 cap
.maximal_amsdu_size
= HT_IE_MAX_AMSDU_SIZE_4K
;
8138 cap
.green_field
= 1;
8141 cap
.supported_chan_width_set
= use_wide_chan
;
8142 cap
.mimo_power_save_mode
= 0x3;
8144 param_info
.max_rx_ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
8145 param_info
.mpdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
8146 ht_cap
->capabilities_info
= (__le16
) cpu_to_le16(cap
.val
);
8147 ht_cap
->mac_ht_params_info
= (u8
) param_info
.val
;
8149 ht_cap
->supported_mcs_set
[0] = 0xff;
8150 ht_cap
->supported_mcs_set
[1] = 0xff;
8151 ht_cap
->supported_mcs_set
[4] =
8152 (cap
.supported_chan_width_set
) ? 0x1: 0x0;
8155 static void iwl_mac_get_ht_capab(struct ieee80211_hw
*hw
,
8156 struct ieee80211_ht_capability
*ht_cap
)
8158 u8 use_wide_channel
= 1;
8159 struct iwl_priv
*priv
= hw
->priv
;
8161 IWL_DEBUG_MAC80211("enter: \n");
8162 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
8163 use_wide_channel
= 0;
8165 /* no fat tx allowed on 2.4GHZ */
8166 if (priv
->phymode
!= MODE_IEEE80211A
)
8167 use_wide_channel
= 0;
8169 iwl_set_ht_capab(hw
, ht_cap
, use_wide_channel
);
8170 IWL_DEBUG_MAC80211("leave: \n");
8172 #endif /*CONFIG_IWLWIFI_HT*/
8174 /*****************************************************************************
8178 *****************************************************************************/
8180 #ifdef CONFIG_IWLWIFI_DEBUG
8183 * The following adds a new attribute to the sysfs representation
8184 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8185 * used for controlling the debug level.
8187 * See the level definitions in iwl for details.
8190 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
8192 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
8194 static ssize_t
store_debug_level(struct device_driver
*d
,
8195 const char *buf
, size_t count
)
8197 char *p
= (char *)buf
;
8200 val
= simple_strtoul(p
, &p
, 0);
8202 printk(KERN_INFO DRV_NAME
8203 ": %s is not in hex or decimal form.\n", buf
);
8205 iwl_debug_level
= val
;
8207 return strnlen(buf
, count
);
8210 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
8211 show_debug_level
, store_debug_level
);
8213 #endif /* CONFIG_IWLWIFI_DEBUG */
8215 static ssize_t
show_rf_kill(struct device
*d
,
8216 struct device_attribute
*attr
, char *buf
)
8219 * 0 - RF kill not enabled
8220 * 1 - SW based RF kill active (sysfs)
8221 * 2 - HW based RF kill active
8222 * 3 - Both HW and SW based RF kill active
8224 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8225 int val
= (test_bit(STATUS_RF_KILL_SW
, &priv
->status
) ? 0x1 : 0x0) |
8226 (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? 0x2 : 0x0);
8228 return sprintf(buf
, "%i\n", val
);
8231 static ssize_t
store_rf_kill(struct device
*d
,
8232 struct device_attribute
*attr
,
8233 const char *buf
, size_t count
)
8235 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8237 mutex_lock(&priv
->mutex
);
8238 iwl_radio_kill_sw(priv
, buf
[0] == '1');
8239 mutex_unlock(&priv
->mutex
);
8244 static DEVICE_ATTR(rf_kill
, S_IWUSR
| S_IRUGO
, show_rf_kill
, store_rf_kill
);
8246 static ssize_t
show_temperature(struct device
*d
,
8247 struct device_attribute
*attr
, char *buf
)
8249 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8251 if (!iwl_is_alive(priv
))
8254 return sprintf(buf
, "%d\n", iwl_hw_get_temperature(priv
));
8257 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
8259 static ssize_t
show_rs_window(struct device
*d
,
8260 struct device_attribute
*attr
,
8263 struct iwl_priv
*priv
= d
->driver_data
;
8264 return iwl_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
8266 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
8268 static ssize_t
show_tx_power(struct device
*d
,
8269 struct device_attribute
*attr
, char *buf
)
8271 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8272 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
8275 static ssize_t
store_tx_power(struct device
*d
,
8276 struct device_attribute
*attr
,
8277 const char *buf
, size_t count
)
8279 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8280 char *p
= (char *)buf
;
8283 val
= simple_strtoul(p
, &p
, 10);
8285 printk(KERN_INFO DRV_NAME
8286 ": %s is not in decimal form.\n", buf
);
8288 iwl_hw_reg_set_txpower(priv
, val
);
8293 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
8295 static ssize_t
show_flags(struct device
*d
,
8296 struct device_attribute
*attr
, char *buf
)
8298 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8300 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
8303 static ssize_t
store_flags(struct device
*d
,
8304 struct device_attribute
*attr
,
8305 const char *buf
, size_t count
)
8307 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8308 u32 flags
= simple_strtoul(buf
, NULL
, 0);
8310 mutex_lock(&priv
->mutex
);
8311 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
8312 /* Cancel any currently running scans... */
8313 if (iwl_scan_cancel_timeout(priv
, 100))
8314 IWL_WARNING("Could not cancel scan.\n");
8316 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8318 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
8319 iwl_commit_rxon(priv
);
8322 mutex_unlock(&priv
->mutex
);
8327 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
8329 static ssize_t
show_filter_flags(struct device
*d
,
8330 struct device_attribute
*attr
, char *buf
)
8332 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8334 return sprintf(buf
, "0x%04X\n",
8335 le32_to_cpu(priv
->active_rxon
.filter_flags
));
8338 static ssize_t
store_filter_flags(struct device
*d
,
8339 struct device_attribute
*attr
,
8340 const char *buf
, size_t count
)
8342 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8343 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
8345 mutex_lock(&priv
->mutex
);
8346 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
8347 /* Cancel any currently running scans... */
8348 if (iwl_scan_cancel_timeout(priv
, 100))
8349 IWL_WARNING("Could not cancel scan.\n");
8351 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8352 "0x%04X\n", filter_flags
);
8353 priv
->staging_rxon
.filter_flags
=
8354 cpu_to_le32(filter_flags
);
8355 iwl_commit_rxon(priv
);
8358 mutex_unlock(&priv
->mutex
);
8363 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
8364 store_filter_flags
);
8366 static ssize_t
show_tune(struct device
*d
,
8367 struct device_attribute
*attr
, char *buf
)
8369 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8371 return sprintf(buf
, "0x%04X\n",
8372 (priv
->phymode
<< 8) |
8373 le16_to_cpu(priv
->active_rxon
.channel
));
8376 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
);
8378 static ssize_t
store_tune(struct device
*d
,
8379 struct device_attribute
*attr
,
8380 const char *buf
, size_t count
)
8382 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8383 char *p
= (char *)buf
;
8384 u16 tune
= simple_strtoul(p
, &p
, 0);
8385 u8 phymode
= (tune
>> 8) & 0xff;
8386 u16 channel
= tune
& 0xff;
8388 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode
, channel
);
8390 mutex_lock(&priv
->mutex
);
8391 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
) ||
8392 (priv
->phymode
!= phymode
)) {
8393 const struct iwl_channel_info
*ch_info
;
8395 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
8397 IWL_WARNING("Requested invalid phymode/channel "
8398 "combination: %d %d\n", phymode
, channel
);
8399 mutex_unlock(&priv
->mutex
);
8403 /* Cancel any currently running scans... */
8404 if (iwl_scan_cancel_timeout(priv
, 100))
8405 IWL_WARNING("Could not cancel scan.\n");
8407 IWL_DEBUG_INFO("Committing phymode and "
8408 "rxon.channel = %d %d\n",
8411 iwl_set_rxon_channel(priv
, phymode
, channel
);
8412 iwl_set_flags_for_phymode(priv
, phymode
);
8415 iwl_commit_rxon(priv
);
8418 mutex_unlock(&priv
->mutex
);
8423 static DEVICE_ATTR(tune
, S_IWUSR
| S_IRUGO
, show_tune
, store_tune
);
8425 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8427 static ssize_t
show_measurement(struct device
*d
,
8428 struct device_attribute
*attr
, char *buf
)
8430 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8431 struct iwl_spectrum_notification measure_report
;
8432 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
8433 u8
*data
= (u8
*) & measure_report
;
8434 unsigned long flags
;
8436 spin_lock_irqsave(&priv
->lock
, flags
);
8437 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
8438 spin_unlock_irqrestore(&priv
->lock
, flags
);
8441 memcpy(&measure_report
, &priv
->measure_report
, size
);
8442 priv
->measurement_status
= 0;
8443 spin_unlock_irqrestore(&priv
->lock
, flags
);
8445 while (size
&& (PAGE_SIZE
- len
)) {
8446 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8447 PAGE_SIZE
- len
, 1);
8449 if (PAGE_SIZE
- len
)
8453 size
-= min(size
, 16U);
8459 static ssize_t
store_measurement(struct device
*d
,
8460 struct device_attribute
*attr
,
8461 const char *buf
, size_t count
)
8463 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8464 struct ieee80211_measurement_params params
= {
8465 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
8466 .start_time
= cpu_to_le64(priv
->last_tsf
),
8467 .duration
= cpu_to_le16(1),
8469 u8 type
= IWL_MEASURE_BASIC
;
8475 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
8476 channel
= simple_strtoul(p
, NULL
, 0);
8478 params
.channel
= channel
;
8481 while (*p
&& *p
!= ' ')
8484 type
= simple_strtoul(p
+ 1, NULL
, 0);
8487 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8488 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
8489 iwl_get_measurement(priv
, ¶ms
, type
);
8494 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
8495 show_measurement
, store_measurement
);
8496 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8498 static ssize_t
store_retry_rate(struct device
*d
,
8499 struct device_attribute
*attr
,
8500 const char *buf
, size_t count
)
8502 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8504 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
8505 if (priv
->retry_rate
<= 0)
8506 priv
->retry_rate
= 1;
8511 static ssize_t
show_retry_rate(struct device
*d
,
8512 struct device_attribute
*attr
, char *buf
)
8514 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8515 return sprintf(buf
, "%d", priv
->retry_rate
);
8518 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
8521 static ssize_t
store_power_level(struct device
*d
,
8522 struct device_attribute
*attr
,
8523 const char *buf
, size_t count
)
8525 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8529 mode
= simple_strtoul(buf
, NULL
, 0);
8530 mutex_lock(&priv
->mutex
);
8532 if (!iwl_is_ready(priv
)) {
8537 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
8538 mode
= IWL_POWER_AC
;
8540 mode
|= IWL_POWER_ENABLED
;
8542 if (mode
!= priv
->power_mode
) {
8543 rc
= iwl_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
8545 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8548 priv
->power_mode
= mode
;
8554 mutex_unlock(&priv
->mutex
);
8558 #define MAX_WX_STRING 80
8560 /* Values are in microsecond */
8561 static const s32 timeout_duration
[] = {
8568 static const s32 period_duration
[] = {
8576 static ssize_t
show_power_level(struct device
*d
,
8577 struct device_attribute
*attr
, char *buf
)
8579 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8580 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
8583 p
+= sprintf(p
, "%d ", level
);
8585 case IWL_POWER_MODE_CAM
:
8587 p
+= sprintf(p
, "(AC)");
8589 case IWL_POWER_BATTERY
:
8590 p
+= sprintf(p
, "(BATTERY)");
8594 "(Timeout %dms, Period %dms)",
8595 timeout_duration
[level
- 1] / 1000,
8596 period_duration
[level
- 1] / 1000);
8599 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
8600 p
+= sprintf(p
, " OFF\n");
8602 p
+= sprintf(p
, " \n");
8604 return (p
- buf
+ 1);
8608 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
8611 static ssize_t
show_channels(struct device
*d
,
8612 struct device_attribute
*attr
, char *buf
)
8614 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8616 struct ieee80211_channel
*channels
= NULL
;
8617 const struct ieee80211_hw_mode
*hw_mode
= NULL
;
8620 if (!iwl_is_ready(priv
))
8623 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211G
);
8625 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211B
);
8627 channels
= hw_mode
->channels
;
8628 count
= hw_mode
->num_channels
;
8633 "Displaying %d channels in 2.4GHz band "
8634 "(802.11bg):\n", count
);
8636 for (i
= 0; i
< count
; i
++)
8637 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8639 channels
[i
].power_level
,
8641 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8642 " (IEEE 802.11h required)" : "",
8643 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8646 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8649 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8650 "active/passive" : "passive only");
8652 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211A
);
8654 channels
= hw_mode
->channels
;
8655 count
= hw_mode
->num_channels
;
8661 len
+= sprintf(&buf
[len
], "Displaying %d channels in 5.2GHz band "
8662 "(802.11a):\n", count
);
8664 for (i
= 0; i
< count
; i
++)
8665 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8667 channels
[i
].power_level
,
8669 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8670 " (IEEE 802.11h required)" : "",
8671 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8674 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8677 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8678 "active/passive" : "passive only");
8683 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
8685 static ssize_t
show_statistics(struct device
*d
,
8686 struct device_attribute
*attr
, char *buf
)
8688 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8689 u32 size
= sizeof(struct iwl_notif_statistics
);
8690 u32 len
= 0, ofs
= 0;
8691 u8
*data
= (u8
*) & priv
->statistics
;
8694 if (!iwl_is_alive(priv
))
8697 mutex_lock(&priv
->mutex
);
8698 rc
= iwl_send_statistics_request(priv
);
8699 mutex_unlock(&priv
->mutex
);
8703 "Error sending statistics request: 0x%08X\n", rc
);
8707 while (size
&& (PAGE_SIZE
- len
)) {
8708 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8709 PAGE_SIZE
- len
, 1);
8711 if (PAGE_SIZE
- len
)
8715 size
-= min(size
, 16U);
8721 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
8723 static ssize_t
show_antenna(struct device
*d
,
8724 struct device_attribute
*attr
, char *buf
)
8726 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8728 if (!iwl_is_alive(priv
))
8731 return sprintf(buf
, "%d\n", priv
->antenna
);
8734 static ssize_t
store_antenna(struct device
*d
,
8735 struct device_attribute
*attr
,
8736 const char *buf
, size_t count
)
8739 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8744 if (sscanf(buf
, "%1i", &ant
) != 1) {
8745 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8749 if ((ant
>= 0) && (ant
<= 2)) {
8750 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
8751 priv
->antenna
= (enum iwl_antenna
)ant
;
8753 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
8759 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
8761 static ssize_t
show_status(struct device
*d
,
8762 struct device_attribute
*attr
, char *buf
)
8764 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8765 if (!iwl_is_alive(priv
))
8767 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
8770 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
8772 static ssize_t
dump_error_log(struct device
*d
,
8773 struct device_attribute
*attr
,
8774 const char *buf
, size_t count
)
8776 char *p
= (char *)buf
;
8779 iwl_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
8781 return strnlen(buf
, count
);
8784 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
8786 static ssize_t
dump_event_log(struct device
*d
,
8787 struct device_attribute
*attr
,
8788 const char *buf
, size_t count
)
8790 char *p
= (char *)buf
;
8793 iwl_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
8795 return strnlen(buf
, count
);
8798 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
8800 /*****************************************************************************
8802 * driver setup and teardown
8804 *****************************************************************************/
8806 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
8808 priv
->workqueue
= create_workqueue(DRV_NAME
);
8810 init_waitqueue_head(&priv
->wait_command_queue
);
8812 INIT_WORK(&priv
->up
, iwl_bg_up
);
8813 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
8814 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
8815 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
8816 INIT_WORK(&priv
->request_scan
, iwl_bg_request_scan
);
8817 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
8818 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
8819 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
8820 INIT_DELAYED_WORK(&priv
->post_associate
, iwl_bg_post_associate
);
8821 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
8822 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
8823 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
8825 iwl_hw_setup_deferred_work(priv
);
8827 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
8828 iwl_irq_tasklet
, (unsigned long)priv
);
8831 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
8833 iwl_hw_cancel_deferred_work(priv
);
8835 cancel_delayed_work(&priv
->scan_check
);
8836 cancel_delayed_work(&priv
->alive_start
);
8837 cancel_delayed_work(&priv
->post_associate
);
8838 cancel_work_sync(&priv
->beacon_update
);
8841 static struct attribute
*iwl_sysfs_entries
[] = {
8842 &dev_attr_antenna
.attr
,
8843 &dev_attr_channels
.attr
,
8844 &dev_attr_dump_errors
.attr
,
8845 &dev_attr_dump_events
.attr
,
8846 &dev_attr_flags
.attr
,
8847 &dev_attr_filter_flags
.attr
,
8848 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8849 &dev_attr_measurement
.attr
,
8851 &dev_attr_power_level
.attr
,
8852 &dev_attr_retry_rate
.attr
,
8853 &dev_attr_rf_kill
.attr
,
8854 &dev_attr_rs_window
.attr
,
8855 &dev_attr_statistics
.attr
,
8856 &dev_attr_status
.attr
,
8857 &dev_attr_temperature
.attr
,
8858 &dev_attr_tune
.attr
,
8859 &dev_attr_tx_power
.attr
,
8864 static struct attribute_group iwl_attribute_group
= {
8865 .name
= NULL
, /* put in device directory */
8866 .attrs
= iwl_sysfs_entries
,
8869 static struct ieee80211_ops iwl_hw_ops
= {
8871 .start
= iwl_mac_start
,
8872 .stop
= iwl_mac_stop
,
8873 .add_interface
= iwl_mac_add_interface
,
8874 .remove_interface
= iwl_mac_remove_interface
,
8875 .config
= iwl_mac_config
,
8876 .config_interface
= iwl_mac_config_interface
,
8877 .configure_filter
= iwl_configure_filter
,
8878 .set_key
= iwl_mac_set_key
,
8879 .get_stats
= iwl_mac_get_stats
,
8880 .get_tx_stats
= iwl_mac_get_tx_stats
,
8881 .conf_tx
= iwl_mac_conf_tx
,
8882 .get_tsf
= iwl_mac_get_tsf
,
8883 .reset_tsf
= iwl_mac_reset_tsf
,
8884 .beacon_update
= iwl_mac_beacon_update
,
8885 #ifdef CONFIG_IWLWIFI_HT
8886 .conf_ht
= iwl_mac_conf_ht
,
8887 .get_ht_capab
= iwl_mac_get_ht_capab
,
8888 #ifdef CONFIG_IWLWIFI_HT_AGG
8889 .ht_tx_agg_start
= iwl_mac_ht_tx_agg_start
,
8890 .ht_tx_agg_stop
= iwl_mac_ht_tx_agg_stop
,
8891 .ht_rx_agg_start
= iwl_mac_ht_rx_agg_start
,
8892 .ht_rx_agg_stop
= iwl_mac_ht_rx_agg_stop
,
8893 #endif /* CONFIG_IWLWIFI_HT_AGG */
8894 #endif /* CONFIG_IWLWIFI_HT */
8895 .hw_scan
= iwl_mac_hw_scan
8898 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
8901 struct iwl_priv
*priv
;
8902 struct ieee80211_hw
*hw
;
8905 if (iwl_param_disable_hw_scan
) {
8906 IWL_DEBUG_INFO("Disabling hw_scan\n");
8907 iwl_hw_ops
.hw_scan
= NULL
;
8910 if ((iwl_param_queues_num
> IWL_MAX_NUM_QUEUES
) ||
8911 (iwl_param_queues_num
< IWL_MIN_NUM_QUEUES
)) {
8912 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8913 IWL_MIN_NUM_QUEUES
, IWL_MAX_NUM_QUEUES
);
8918 /* mac80211 allocates memory for this device instance, including
8919 * space for this driver's private structure */
8920 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwl_hw_ops
);
8922 IWL_ERROR("Can not allocate network device\n");
8926 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
8928 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8932 priv
->pci_dev
= pdev
;
8933 priv
->antenna
= (enum iwl_antenna
)iwl_param_antenna
;
8934 #ifdef CONFIG_IWLWIFI_DEBUG
8935 iwl_debug_level
= iwl_param_debug
;
8936 atomic_set(&priv
->restrict_refcnt
, 0);
8938 priv
->retry_rate
= 1;
8940 priv
->ibss_beacon
= NULL
;
8942 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8943 * the range of signal quality values that we'll provide.
8944 * Negative values for level/noise indicate that we'll provide dBm.
8945 * For WE, at least, non-0 values here *enable* display of values
8946 * in app (iwconfig). */
8947 hw
->max_rssi
= -20; /* signal level, negative indicates dBm */
8948 hw
->max_noise
= -20; /* noise level, negative indicates dBm */
8949 hw
->max_signal
= 100; /* link quality indication (%) */
8951 /* Tell mac80211 our Tx characteristics */
8952 hw
->flags
= IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
;
8955 #ifdef CONFIG_IWLWIFI_HT
8956 #ifdef CONFIG_IWLWIFI_HT_AGG
8958 #endif /* CONFIG_IWLWIFI_HT_AGG */
8959 #endif /* CONFIG_IWLWIFI_HT */
8961 spin_lock_init(&priv
->lock
);
8962 spin_lock_init(&priv
->power_data
.lock
);
8963 spin_lock_init(&priv
->sta_lock
);
8964 spin_lock_init(&priv
->hcmd_lock
);
8965 spin_lock_init(&priv
->lq_mngr
.lock
);
8967 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
8968 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
8970 INIT_LIST_HEAD(&priv
->free_frames
);
8972 mutex_init(&priv
->mutex
);
8973 if (pci_enable_device(pdev
)) {
8975 goto out_ieee80211_free_hw
;
8978 pci_set_master(pdev
);
8980 iwl_clear_stations_table(priv
);
8982 priv
->data_retry_limit
= -1;
8983 priv
->ieee_channels
= NULL
;
8984 priv
->ieee_rates
= NULL
;
8987 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
8989 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
8991 printk(KERN_WARNING DRV_NAME
": No suitable DMA available.\n");
8992 goto out_pci_disable_device
;
8995 pci_set_drvdata(pdev
, priv
);
8996 err
= pci_request_regions(pdev
, DRV_NAME
);
8998 goto out_pci_disable_device
;
8999 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9000 * PCI Tx retries from interfering with C3 CPU state */
9001 pci_write_config_byte(pdev
, 0x41, 0x00);
9002 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
9003 if (!priv
->hw_base
) {
9005 goto out_pci_release_regions
;
9008 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9009 (unsigned long long) pci_resource_len(pdev
, 0));
9010 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
9012 /* Initialize module parameter values here */
9014 if (iwl_param_disable
) {
9015 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
9016 IWL_DEBUG_INFO("Radio disabled.\n");
9019 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
9022 priv
->use_ant_b_for_management_frame
= 1; /* start with ant B */
9023 priv
->is_ht_enabled
= 1;
9024 priv
->channel_width
= IWL_CHANNEL_WIDTH_40MHZ
;
9025 priv
->valid_antenna
= 0x7; /* assume all 3 connected */
9026 priv
->ps_mode
= IWL_MIMO_PS_NONE
;
9027 priv
->cck_power_index_compensation
= iwl_read32(
9028 priv
, CSR_HW_REV_WA_REG
);
9030 iwl4965_set_rxon_chain(priv
);
9032 printk(KERN_INFO DRV_NAME
9033 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9035 /* Device-specific setup */
9036 if (iwl_hw_set_hw_setting(priv
)) {
9037 IWL_ERROR("failed to set hw settings\n");
9038 mutex_unlock(&priv
->mutex
);
9042 #ifdef CONFIG_IWLWIFI_QOS
9043 if (iwl_param_qos_enable
)
9044 priv
->qos_data
.qos_enable
= 1;
9046 iwl_reset_qos(priv
);
9048 priv
->qos_data
.qos_active
= 0;
9049 priv
->qos_data
.qos_cap
.val
= 0;
9050 #endif /* CONFIG_IWLWIFI_QOS */
9052 iwl_set_rxon_channel(priv
, MODE_IEEE80211G
, 6);
9053 iwl_setup_deferred_work(priv
);
9054 iwl_setup_rx_handlers(priv
);
9056 priv
->rates_mask
= IWL_RATES_MASK
;
9057 /* If power management is turned on, default to AC mode */
9058 priv
->power_mode
= IWL_POWER_AC
;
9059 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
9061 pci_enable_msi(pdev
);
9063 err
= request_irq(pdev
->irq
, iwl_isr
, IRQF_SHARED
, DRV_NAME
, priv
);
9065 IWL_ERROR("Error allocating IRQ %d\n", pdev
->irq
);
9066 goto out_disable_msi
;
9069 mutex_lock(&priv
->mutex
);
9071 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9073 IWL_ERROR("failed to create sysfs device attributes\n");
9074 mutex_unlock(&priv
->mutex
);
9075 goto out_release_irq
;
9078 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9079 * ucode filename and max sizes are card-specific. */
9080 err
= iwl_read_ucode(priv
);
9082 IWL_ERROR("Could not read microcode: %d\n", err
);
9083 mutex_unlock(&priv
->mutex
);
9087 mutex_unlock(&priv
->mutex
);
9089 IWL_DEBUG_INFO("Queing UP work.\n");
9091 queue_work(priv
->workqueue
, &priv
->up
);
9096 iwl_dealloc_ucode_pci(priv
);
9098 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9101 free_irq(pdev
->irq
, priv
);
9104 pci_disable_msi(pdev
);
9105 destroy_workqueue(priv
->workqueue
);
9106 priv
->workqueue
= NULL
;
9107 iwl_unset_hw_setting(priv
);
9110 pci_iounmap(pdev
, priv
->hw_base
);
9111 out_pci_release_regions
:
9112 pci_release_regions(pdev
);
9113 out_pci_disable_device
:
9114 pci_disable_device(pdev
);
9115 pci_set_drvdata(pdev
, NULL
);
9116 out_ieee80211_free_hw
:
9117 ieee80211_free_hw(priv
->hw
);
9122 static void iwl_pci_remove(struct pci_dev
*pdev
)
9124 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9125 struct list_head
*p
, *q
;
9131 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9133 mutex_lock(&priv
->mutex
);
9134 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
9136 mutex_unlock(&priv
->mutex
);
9138 /* Free MAC hash list for ADHOC */
9139 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
9140 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
9142 kfree(list_entry(p
, struct iwl_ibss_seq
, list
));
9146 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
9148 iwl_dealloc_ucode_pci(priv
);
9151 iwl_rx_queue_free(priv
, &priv
->rxq
);
9152 iwl_hw_txq_ctx_free(priv
);
9154 iwl_unset_hw_setting(priv
);
9155 iwl_clear_stations_table(priv
);
9157 if (priv
->mac80211_registered
) {
9158 ieee80211_unregister_hw(priv
->hw
);
9159 iwl_rate_control_unregister(priv
->hw
);
9162 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9163 * priv->workqueue... so we can't take down the workqueue
9165 destroy_workqueue(priv
->workqueue
);
9166 priv
->workqueue
= NULL
;
9168 free_irq(pdev
->irq
, priv
);
9169 pci_disable_msi(pdev
);
9170 pci_iounmap(pdev
, priv
->hw_base
);
9171 pci_release_regions(pdev
);
9172 pci_disable_device(pdev
);
9173 pci_set_drvdata(pdev
, NULL
);
9175 kfree(priv
->channel_info
);
9177 kfree(priv
->ieee_channels
);
9178 kfree(priv
->ieee_rates
);
9180 if (priv
->ibss_beacon
)
9181 dev_kfree_skb(priv
->ibss_beacon
);
9183 ieee80211_free_hw(priv
->hw
);
9188 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
9190 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9192 mutex_lock(&priv
->mutex
);
9194 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9196 /* Take down the device; powers it off, etc. */
9199 if (priv
->mac80211_registered
)
9200 ieee80211_stop_queues(priv
->hw
);
9202 pci_save_state(pdev
);
9203 pci_disable_device(pdev
);
9204 pci_set_power_state(pdev
, PCI_D3hot
);
9206 mutex_unlock(&priv
->mutex
);
9211 static void iwl_resume(struct iwl_priv
*priv
)
9213 unsigned long flags
;
9215 /* The following it a temporary work around due to the
9216 * suspend / resume not fully initializing the NIC correctly.
9217 * Without all of the following, resume will not attempt to take
9218 * down the NIC (it shouldn't really need to) and will just try
9219 * and bring the NIC back up. However that fails during the
9220 * ucode verification process. This then causes iwl_down to be
9221 * called *after* iwl_hw_nic_init() has succeeded -- which
9222 * then lets the next init sequence succeed. So, we've
9223 * replicated all of that NIC init code here... */
9225 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9227 iwl_hw_nic_init(priv
);
9229 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9230 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
9231 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
9232 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
9233 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9234 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
9236 /* tell the device to stop sending interrupts */
9237 iwl_disable_interrupts(priv
);
9239 spin_lock_irqsave(&priv
->lock
, flags
);
9240 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
9242 if (!iwl_grab_restricted_access(priv
)) {
9243 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
9244 APMG_CLK_VAL_DMA_CLK_RQT
);
9245 iwl_release_restricted_access(priv
);
9247 spin_unlock_irqrestore(&priv
->lock
, flags
);
9251 iwl_hw_nic_reset(priv
);
9253 /* Bring the device back up */
9254 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
9255 queue_work(priv
->workqueue
, &priv
->up
);
9258 static int iwl_pci_resume(struct pci_dev
*pdev
)
9260 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
9263 printk(KERN_INFO
"Coming out of suspend...\n");
9265 mutex_lock(&priv
->mutex
);
9267 pci_set_power_state(pdev
, PCI_D0
);
9268 err
= pci_enable_device(pdev
);
9269 pci_restore_state(pdev
);
9272 * Suspend/Resume resets the PCI configuration space, so we have to
9273 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9274 * from interfering with C3 CPU state. pci_restore_state won't help
9275 * here since it only restores the first 64 bytes pci config header.
9277 pci_write_config_byte(pdev
, 0x41, 0x00);
9280 mutex_unlock(&priv
->mutex
);
9285 #endif /* CONFIG_PM */
9287 /*****************************************************************************
9289 * driver and module entry point
9291 *****************************************************************************/
9293 static struct pci_driver iwl_driver
= {
9295 .id_table
= iwl_hw_card_ids
,
9296 .probe
= iwl_pci_probe
,
9297 .remove
= __devexit_p(iwl_pci_remove
),
9299 .suspend
= iwl_pci_suspend
,
9300 .resume
= iwl_pci_resume
,
9304 static int __init
iwl_init(void)
9308 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
9309 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
9310 ret
= pci_register_driver(&iwl_driver
);
9312 IWL_ERROR("Unable to initialize PCI module\n");
9315 #ifdef CONFIG_IWLWIFI_DEBUG
9316 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9318 IWL_ERROR("Unable to create driver sysfs file\n");
9319 pci_unregister_driver(&iwl_driver
);
9327 static void __exit
iwl_exit(void)
9329 #ifdef CONFIG_IWLWIFI_DEBUG
9330 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
9332 pci_unregister_driver(&iwl_driver
);
9335 module_param_named(antenna
, iwl_param_antenna
, int, 0444);
9336 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
9337 module_param_named(disable
, iwl_param_disable
, int, 0444);
9338 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
9339 module_param_named(hwcrypto
, iwl_param_hwcrypto
, int, 0444);
9340 MODULE_PARM_DESC(hwcrypto
,
9341 "using hardware crypto engine (default 0 [software])\n");
9342 module_param_named(debug
, iwl_param_debug
, int, 0444);
9343 MODULE_PARM_DESC(debug
, "debug output mask");
9344 module_param_named(disable_hw_scan
, iwl_param_disable_hw_scan
, int, 0444);
9345 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
9347 module_param_named(queues_num
, iwl_param_queues_num
, int, 0444);
9348 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
9351 module_param_named(qos_enable
, iwl_param_qos_enable
, int, 0444);
9352 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
9354 module_exit(iwl_exit
);
9355 module_init(iwl_init
);