1 /******************************************************************************
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/etherdevice.h>
52 #include <linux/if_arp.h>
54 #include <net/ieee80211_radiotap.h>
55 #include <net/mac80211.h>
57 #include <asm/div64.h>
63 #include "iwl-helpers.h"
65 #ifdef CONFIG_IWLWIFI_DEBUG
69 /******************************************************************************
73 ******************************************************************************/
75 /* module parameters */
76 int iwl_param_disable_hw_scan
;
78 int iwl_param_disable
; /* def: enable radio */
79 int iwl_param_antenna
; /* def: 0 = both antennas (use diversity) */
80 int iwl_param_hwcrypto
; /* def: using software encryption */
81 int iwl_param_qos_enable
= 1;
82 int iwl_param_queues_num
= IWL_MAX_NUM_QUEUES
;
85 * module name, copyright, version, etc.
86 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
89 #define DRV_DESCRIPTION \
90 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
92 #ifdef CONFIG_IWLWIFI_DEBUG
98 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
104 #define IWLWIFI_VERSION "1.1.17k" VD VS
105 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
106 #define DRV_VERSION IWLWIFI_VERSION
108 /* Change firmware file name, using "-" and incrementing number,
109 * *only* when uCode interface or architecture changes so that it
110 * is not compatible with earlier drivers.
111 * This number will also appear in << 8 position of 1st dword of uCode file */
112 #define IWL3945_UCODE_API "-1"
114 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
115 MODULE_VERSION(DRV_VERSION
);
116 MODULE_AUTHOR(DRV_COPYRIGHT
);
117 MODULE_LICENSE("GPL");
119 __le16
*ieee80211_get_qos_ctrl(struct ieee80211_hdr
*hdr
)
121 u16 fc
= le16_to_cpu(hdr
->frame_control
);
122 int hdr_len
= ieee80211_get_hdrlen(fc
);
124 if ((fc
& 0x00cc) == (IEEE80211_STYPE_QOS_DATA
| IEEE80211_FTYPE_DATA
))
125 return (__le16
*) ((u8
*) hdr
+ hdr_len
- QOS_CONTROL_LEN
);
129 static const struct ieee80211_hw_mode
*iwl_get_hw_mode(
130 struct iwl_priv
*priv
, int mode
)
134 for (i
= 0; i
< 3; i
++)
135 if (priv
->modes
[i
].mode
== mode
)
136 return &priv
->modes
[i
];
141 static int iwl_is_empty_essid(const char *essid
, int essid_len
)
143 /* Single white space is for Linksys APs */
144 if (essid_len
== 1 && essid
[0] == ' ')
147 /* Otherwise, if the entire essid is 0, we assume it is hidden */
150 if (essid
[essid_len
] != '\0')
157 static const char *iwl_escape_essid(const char *essid
, u8 essid_len
)
159 static char escaped
[IW_ESSID_MAX_SIZE
* 2 + 1];
160 const char *s
= essid
;
163 if (iwl_is_empty_essid(essid
, essid_len
)) {
164 memcpy(escaped
, "<hidden>", sizeof("<hidden>"));
168 essid_len
= min(essid_len
, (u8
) IW_ESSID_MAX_SIZE
);
169 while (essid_len
--) {
181 static void iwl_print_hex_dump(int level
, void *p
, u32 len
)
183 #ifdef CONFIG_IWLWIFI_DEBUG
184 if (!(iwl_debug_level
& level
))
187 print_hex_dump(KERN_DEBUG
, "iwl data: ", DUMP_PREFIX_OFFSET
, 16, 1,
192 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
195 * Theory of operation
197 * A queue is a circular buffers with 'Read' and 'Write' pointers.
198 * 2 empty entries always kept in the buffer to protect from overflow.
200 * For Tx queue, there are low mark and high mark limits. If, after queuing
201 * the packet for Tx, free space become < low mark, Tx queue stopped. When
202 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
205 * The IWL operates with six queues, one receive queue in the device's
206 * sram, one transmit queue for sending commands to the device firmware,
207 * and four transmit queues for data.
208 ***************************************************/
210 static int iwl_queue_space(const struct iwl_queue
*q
)
212 int s
= q
->last_used
- q
->first_empty
;
214 if (q
->last_used
> q
->first_empty
)
219 /* keep some reserve to not confuse empty and full situations */
226 /* XXX: n_bd must be power-of-two size */
227 static inline int iwl_queue_inc_wrap(int index
, int n_bd
)
229 return ++index
& (n_bd
- 1);
232 /* XXX: n_bd must be power-of-two size */
233 static inline int iwl_queue_dec_wrap(int index
, int n_bd
)
235 return --index
& (n_bd
- 1);
238 static inline int x2_queue_used(const struct iwl_queue
*q
, int i
)
240 return q
->first_empty
> q
->last_used
?
241 (i
>= q
->last_used
&& i
< q
->first_empty
) :
242 !(i
< q
->last_used
&& i
>= q
->first_empty
);
245 static inline u8
get_cmd_index(struct iwl_queue
*q
, u32 index
, int is_huge
)
250 return index
& (q
->n_window
- 1);
253 static int iwl_queue_init(struct iwl_priv
*priv
, struct iwl_queue
*q
,
254 int count
, int slots_num
, u32 id
)
257 q
->n_window
= slots_num
;
260 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
261 * and iwl_queue_dec_wrap are broken. */
262 BUG_ON(!is_power_of_2(count
));
264 /* slots_num must be power-of-two size, otherwise
265 * get_cmd_index is broken. */
266 BUG_ON(!is_power_of_2(slots_num
));
268 q
->low_mark
= q
->n_window
/ 4;
272 q
->high_mark
= q
->n_window
/ 8;
273 if (q
->high_mark
< 2)
276 q
->first_empty
= q
->last_used
= 0;
281 static int iwl_tx_queue_alloc(struct iwl_priv
*priv
,
282 struct iwl_tx_queue
*txq
, u32 id
)
284 struct pci_dev
*dev
= priv
->pci_dev
;
286 if (id
!= IWL_CMD_QUEUE_NUM
) {
287 txq
->txb
= kmalloc(sizeof(txq
->txb
[0]) *
288 TFD_QUEUE_SIZE_MAX
, GFP_KERNEL
);
290 IWL_ERROR("kmalloc for auxilary BD "
291 "structures failed\n");
297 txq
->bd
= pci_alloc_consistent(dev
,
298 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
,
302 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
303 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
);
319 int iwl_tx_queue_init(struct iwl_priv
*priv
,
320 struct iwl_tx_queue
*txq
, int slots_num
, u32 txq_id
)
322 struct pci_dev
*dev
= priv
->pci_dev
;
326 /* alocate command space + one big command for scan since scan
327 * command is very huge the system will not have two scan at the
329 len
= sizeof(struct iwl_cmd
) * slots_num
;
330 if (txq_id
== IWL_CMD_QUEUE_NUM
)
331 len
+= IWL_MAX_SCAN_SIZE
;
332 txq
->cmd
= pci_alloc_consistent(dev
, len
, &txq
->dma_addr_cmd
);
336 rc
= iwl_tx_queue_alloc(priv
, txq
, txq_id
);
338 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
342 txq
->need_update
= 0;
344 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
345 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
346 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX
& (TFD_QUEUE_SIZE_MAX
- 1));
347 iwl_queue_init(priv
, &txq
->q
, TFD_QUEUE_SIZE_MAX
, slots_num
, txq_id
);
349 iwl_hw_tx_queue_init(priv
, txq
);
355 * iwl_tx_queue_free - Deallocate DMA queue.
356 * @txq: Transmit queue to deallocate.
358 * Empty queue by removing and destroying all BD's.
359 * Free all buffers. txq itself is not freed.
362 void iwl_tx_queue_free(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
364 struct iwl_queue
*q
= &txq
->q
;
365 struct pci_dev
*dev
= priv
->pci_dev
;
371 /* first, empty all BD's */
372 for (; q
->first_empty
!= q
->last_used
;
373 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
))
374 iwl_hw_txq_free_tfd(priv
, txq
);
376 len
= sizeof(struct iwl_cmd
) * q
->n_window
;
377 if (q
->id
== IWL_CMD_QUEUE_NUM
)
378 len
+= IWL_MAX_SCAN_SIZE
;
380 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
382 /* free buffers belonging to queue itself */
384 pci_free_consistent(dev
, sizeof(struct iwl_tfd_frame
) *
385 txq
->q
.n_bd
, txq
->bd
, txq
->q
.dma_addr
);
392 /* 0 fill whole structure */
393 memset(txq
, 0, sizeof(*txq
));
396 const u8 BROADCAST_ADDR
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
398 /*************** STATION TABLE MANAGEMENT ****
400 * NOTE: This needs to be overhauled to better synchronize between
401 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
403 * mac80211 should also be examined to determine if sta_info is duplicating
404 * the functionality provided here
407 /**************************************************************/
408 #if 0 /* temparary disable till we add real remove station */
409 static u8
iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
411 int index
= IWL_INVALID_STATION
;
415 spin_lock_irqsave(&priv
->sta_lock
, flags
);
419 else if (is_broadcast_ether_addr(addr
))
420 index
= priv
->hw_setting
.bcast_sta_id
;
422 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++)
423 if (priv
->stations
[i
].used
&&
424 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
430 if (unlikely(index
== IWL_INVALID_STATION
))
433 if (priv
->stations
[index
].used
) {
434 priv
->stations
[index
].used
= 0;
435 priv
->num_stations
--;
438 BUG_ON(priv
->num_stations
< 0);
441 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
445 static void iwl_clear_stations_table(struct iwl_priv
*priv
)
449 spin_lock_irqsave(&priv
->sta_lock
, flags
);
451 priv
->num_stations
= 0;
452 memset(priv
->stations
, 0, sizeof(priv
->stations
));
454 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
);
467 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
470 else if (is_broadcast_ether_addr(addr
))
471 index
= priv
->hw_setting
.bcast_sta_id
;
473 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++) {
474 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
480 if (!priv
->stations
[i
].used
&&
481 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
);
498 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index
, print_mac(mac
, addr
));
499 station
= &priv
->stations
[index
];
501 priv
->num_stations
++;
503 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
504 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
505 station
->sta
.mode
= 0;
506 station
->sta
.sta
.sta_id
= index
;
507 station
->sta
.station_flags
= 0;
509 rate
= (priv
->phymode
== MODE_IEEE80211A
) ? IWL_RATE_6M_PLCP
:
510 IWL_RATE_1M_PLCP
| priv
->hw_setting
.cck_flag
;
512 /* Turn on both antennas for the station... */
513 station
->sta
.rate_n_flags
=
514 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_ANT_AB_MSK
);
515 station
->current_rate
.rate_n_flags
=
516 le16_to_cpu(station
->sta
.rate_n_flags
);
518 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
519 iwl_send_add_station(priv
, &station
->sta
, flags
);
524 /*************** DRIVER STATUS FUNCTIONS *****/
526 static inline int iwl_is_ready(struct iwl_priv
*priv
)
528 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
529 * set but EXIT_PENDING is not */
530 return test_bit(STATUS_READY
, &priv
->status
) &&
531 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) &&
532 !test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
535 static inline int iwl_is_alive(struct iwl_priv
*priv
)
537 return test_bit(STATUS_ALIVE
, &priv
->status
);
540 static inline int iwl_is_init(struct iwl_priv
*priv
)
542 return test_bit(STATUS_INIT
, &priv
->status
);
545 static inline int iwl_is_rfkill(struct iwl_priv
*priv
)
547 return test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ||
548 test_bit(STATUS_RF_KILL_SW
, &priv
->status
);
551 static inline int iwl_is_ready_rf(struct iwl_priv
*priv
)
554 if (iwl_is_rfkill(priv
))
557 return iwl_is_ready(priv
);
560 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
562 #define IWL_CMD(x) case x : return #x
564 static const char *get_cmd_string(u8 cmd
)
567 IWL_CMD(REPLY_ALIVE
);
568 IWL_CMD(REPLY_ERROR
);
570 IWL_CMD(REPLY_RXON_ASSOC
);
571 IWL_CMD(REPLY_QOS_PARAM
);
572 IWL_CMD(REPLY_RXON_TIMING
);
573 IWL_CMD(REPLY_ADD_STA
);
574 IWL_CMD(REPLY_REMOVE_STA
);
575 IWL_CMD(REPLY_REMOVE_ALL_STA
);
576 IWL_CMD(REPLY_3945_RX
);
578 IWL_CMD(REPLY_RATE_SCALE
);
579 IWL_CMD(REPLY_LEDS_CMD
);
580 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD
);
581 IWL_CMD(RADAR_NOTIFICATION
);
582 IWL_CMD(REPLY_QUIET_CMD
);
583 IWL_CMD(REPLY_CHANNEL_SWITCH
);
584 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION
);
585 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD
);
586 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION
);
587 IWL_CMD(POWER_TABLE_CMD
);
588 IWL_CMD(PM_SLEEP_NOTIFICATION
);
589 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC
);
590 IWL_CMD(REPLY_SCAN_CMD
);
591 IWL_CMD(REPLY_SCAN_ABORT_CMD
);
592 IWL_CMD(SCAN_START_NOTIFICATION
);
593 IWL_CMD(SCAN_RESULTS_NOTIFICATION
);
594 IWL_CMD(SCAN_COMPLETE_NOTIFICATION
);
595 IWL_CMD(BEACON_NOTIFICATION
);
596 IWL_CMD(REPLY_TX_BEACON
);
597 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION
);
598 IWL_CMD(QUIET_NOTIFICATION
);
599 IWL_CMD(REPLY_TX_PWR_TABLE_CMD
);
600 IWL_CMD(MEASURE_ABORT_NOTIFICATION
);
601 IWL_CMD(REPLY_BT_CONFIG
);
602 IWL_CMD(REPLY_STATISTICS_CMD
);
603 IWL_CMD(STATISTICS_NOTIFICATION
);
604 IWL_CMD(REPLY_CARD_STATE_CMD
);
605 IWL_CMD(CARD_STATE_NOTIFICATION
);
606 IWL_CMD(MISSED_BEACONS_NOTIFICATION
);
613 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
616 * iwl_enqueue_hcmd - enqueue a uCode command
617 * @priv: device private data point
618 * @cmd: a point to the ucode command structure
620 * The function returns < 0 values to indicate the operation is
621 * failed. On success, it turns the index (> 0) of command in the
624 static int iwl_enqueue_hcmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
626 struct iwl_tx_queue
*txq
= &priv
->txq
[IWL_CMD_QUEUE_NUM
];
627 struct iwl_queue
*q
= &txq
->q
;
628 struct iwl_tfd_frame
*tfd
;
630 struct iwl_cmd
*out_cmd
;
632 u16 fix_size
= (u16
)(cmd
->len
+ sizeof(out_cmd
->hdr
));
633 dma_addr_t phys_addr
;
639 /* If any of the command structures end up being larger than
640 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
641 * we will need to increase the size of the TFD entries */
642 BUG_ON((fix_size
> TFD_MAX_PAYLOAD_SIZE
) &&
643 !(cmd
->meta
.flags
& CMD_SIZE_HUGE
));
645 if (iwl_queue_space(q
) < ((cmd
->meta
.flags
& CMD_ASYNC
) ? 2 : 1)) {
646 IWL_ERROR("No space for Tx\n");
650 spin_lock_irqsave(&priv
->hcmd_lock
, flags
);
652 tfd
= &txq
->bd
[q
->first_empty
];
653 memset(tfd
, 0, sizeof(*tfd
));
655 control_flags
= (u32
*) tfd
;
657 idx
= get_cmd_index(q
, q
->first_empty
, cmd
->meta
.flags
& CMD_SIZE_HUGE
);
658 out_cmd
= &txq
->cmd
[idx
];
660 out_cmd
->hdr
.cmd
= cmd
->id
;
661 memcpy(&out_cmd
->meta
, &cmd
->meta
, sizeof(cmd
->meta
));
662 memcpy(&out_cmd
->cmd
.payload
, cmd
->data
, cmd
->len
);
664 /* At this point, the out_cmd now has all of the incoming cmd
667 out_cmd
->hdr
.flags
= 0;
668 out_cmd
->hdr
.sequence
= cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM
) |
669 INDEX_TO_SEQ(q
->first_empty
));
670 if (out_cmd
->meta
.flags
& CMD_SIZE_HUGE
)
671 out_cmd
->hdr
.sequence
|= cpu_to_le16(SEQ_HUGE_FRAME
);
673 phys_addr
= txq
->dma_addr_cmd
+ sizeof(txq
->cmd
[0]) * idx
+
674 offsetof(struct iwl_cmd
, hdr
);
675 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, fix_size
);
677 pad
= U32_PAD(cmd
->len
);
678 count
= TFD_CTL_COUNT_GET(*control_flags
);
679 *control_flags
= TFD_CTL_COUNT_SET(count
) | TFD_CTL_PAD_SET(pad
);
681 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
682 "%d bytes at %d[%d]:%d\n",
683 get_cmd_string(out_cmd
->hdr
.cmd
),
684 out_cmd
->hdr
.cmd
, le16_to_cpu(out_cmd
->hdr
.sequence
),
685 fix_size
, q
->first_empty
, idx
, IWL_CMD_QUEUE_NUM
);
687 txq
->need_update
= 1;
688 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, q
->n_bd
);
689 ret
= 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_set_rxon_channel - Set the phymode and channel values in staging RXON
848 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
849 * @channel: Any channel valid for the requested phymode
851 * In addition to setting the staging RXON, priv->phymode is also set.
853 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
854 * in the staging RXON flag structure based on the phymode
856 static int iwl_set_rxon_channel(struct iwl_priv
*priv
, u8 phymode
, u16 channel
)
858 if (!iwl_get_channel_info(priv
, phymode
, channel
)) {
859 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
864 if ((le16_to_cpu(priv
->staging_rxon
.channel
) == channel
) &&
865 (priv
->phymode
== phymode
))
868 priv
->staging_rxon
.channel
= cpu_to_le16(channel
);
869 if (phymode
== MODE_IEEE80211A
)
870 priv
->staging_rxon
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
872 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
874 priv
->phymode
= phymode
;
876 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel
, phymode
);
882 * iwl_check_rxon_cmd - validate RXON structure is valid
884 * NOTE: This is really only useful during development and can eventually
885 * be #ifdef'd out once the driver is stable and folks aren't actively
888 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd
*rxon
)
893 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
894 error
|= le32_to_cpu(rxon
->flags
&
895 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
896 RXON_FLG_RADAR_DETECT_MSK
));
898 IWL_WARNING("check 24G fields %d | %d\n",
901 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
902 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
904 IWL_WARNING("check 52 fields %d | %d\n",
906 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
908 IWL_WARNING("check 52 CCK %d | %d\n",
911 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
913 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
915 /* make sure basic rates 6Mbps and 1Mbps are supported */
916 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
917 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
919 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
921 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
923 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
925 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
926 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
928 IWL_WARNING("check CCK and short slot %d | %d\n",
931 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
932 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
934 IWL_WARNING("check CCK & auto detect %d | %d\n",
937 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
938 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
940 IWL_WARNING("check TGG and auto detect %d | %d\n",
943 if ((rxon
->flags
& RXON_FLG_DIS_DIV_MSK
))
944 error
|= ((rxon
->flags
& (RXON_FLG_ANT_B_MSK
|
945 RXON_FLG_ANT_A_MSK
)) == 0);
947 IWL_WARNING("check antenna %d %d\n", counter
++, error
);
950 IWL_WARNING("Tuning to channel %d\n",
951 le16_to_cpu(rxon
->channel
));
954 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
961 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
962 * @priv: staging_rxon is comapred to active_rxon
964 * If the RXON structure is changing sufficient to require a new
965 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
966 * to indicate a new tune is required.
968 static int iwl_full_rxon_required(struct iwl_priv
*priv
)
971 /* These items are only settable from the full RXON command */
972 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
973 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
974 priv
->active_rxon
.bssid_addr
) ||
975 compare_ether_addr(priv
->staging_rxon
.node_addr
,
976 priv
->active_rxon
.node_addr
) ||
977 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
978 priv
->active_rxon
.wlap_bssid_addr
) ||
979 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
980 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
981 (priv
->staging_rxon
.air_propagation
!=
982 priv
->active_rxon
.air_propagation
) ||
983 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
986 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
987 * be updated with the RXON_ASSOC command -- however only some
988 * flag transitions are allowed using RXON_ASSOC */
990 /* Check if we are not switching bands */
991 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
992 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
995 /* Check if we are switching association toggle */
996 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
997 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
1003 static int iwl_send_rxon_assoc(struct iwl_priv
*priv
)
1006 struct iwl_rx_packet
*res
= NULL
;
1007 struct iwl_rxon_assoc_cmd rxon_assoc
;
1008 struct iwl_host_cmd cmd
= {
1009 .id
= REPLY_RXON_ASSOC
,
1010 .len
= sizeof(rxon_assoc
),
1011 .meta
.flags
= CMD_WANT_SKB
,
1012 .data
= &rxon_assoc
,
1014 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1015 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1017 if ((rxon1
->flags
== rxon2
->flags
) &&
1018 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1019 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1020 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1021 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1025 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1026 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1027 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1028 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1029 rxon_assoc
.reserved
= 0;
1031 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1035 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1036 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1037 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1041 priv
->alloc_rxb_skb
--;
1042 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1048 * iwl_commit_rxon - commit staging_rxon to hardware
1050 * The RXON command in staging_rxon is commited to the hardware and
1051 * the active_rxon structure is updated with the new data. This
1052 * function correctly transitions out of the RXON_ASSOC_MSK state if
1053 * a HW tune is required based on the RXON structure changes.
1055 static int iwl_commit_rxon(struct iwl_priv
*priv
)
1057 /* cast away the const for active_rxon in this function */
1058 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1060 DECLARE_MAC_BUF(mac
);
1062 if (!iwl_is_alive(priv
))
1065 /* always get timestamp with Rx frame */
1066 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
1068 /* select antenna */
1069 priv
->staging_rxon
.flags
&=
1070 ~(RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_SEL_MSK
);
1071 priv
->staging_rxon
.flags
|= iwl3945_get_antenna_flags(priv
);
1073 rc
= iwl_check_rxon_cmd(&priv
->staging_rxon
);
1075 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1079 /* If we don't need to send a full RXON, we can use
1080 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1081 * and other flags for the current radio configuration. */
1082 if (!iwl_full_rxon_required(priv
)) {
1083 rc
= iwl_send_rxon_assoc(priv
);
1085 IWL_ERROR("Error setting RXON_ASSOC "
1086 "configuration (%d).\n", rc
);
1090 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1095 /* If we are currently associated and the new config requires
1096 * an RXON_ASSOC and the new config wants the associated mask enabled,
1097 * we must clear the associated from the active configuration
1098 * before we apply the new config */
1099 if (iwl_is_associated(priv
) &&
1100 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
1101 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1102 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1104 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1105 sizeof(struct iwl_rxon_cmd
),
1106 &priv
->active_rxon
);
1108 /* If the mask clearing failed then we set
1109 * active_rxon back to what it was previously */
1111 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1112 IWL_ERROR("Error clearing ASSOC_MSK on current "
1113 "configuration (%d).\n", rc
);
1118 IWL_DEBUG_INFO("Sending RXON\n"
1119 "* with%s RXON_FILTER_ASSOC_MSK\n"
1122 ((priv
->staging_rxon
.filter_flags
&
1123 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
1124 le16_to_cpu(priv
->staging_rxon
.channel
),
1125 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
1127 /* Apply the new configuration */
1128 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1129 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
1131 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
1135 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
1137 iwl_clear_stations_table(priv
);
1139 /* If we issue a new RXON command which required a tune then we must
1140 * send a new TXPOWER command or we won't be able to Tx any frames */
1141 rc
= iwl_hw_reg_send_txpower(priv
);
1143 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
1147 /* Add the broadcast address so we can send broadcast frames */
1148 if (iwl_add_station(priv
, BROADCAST_ADDR
, 0, 0) ==
1149 IWL_INVALID_STATION
) {
1150 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1154 /* If we have set the ASSOC_MSK and we are in BSS mode then
1155 * add the IWL_AP_ID to the station rate table */
1156 if (iwl_is_associated(priv
) &&
1157 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
1158 if (iwl_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1, 0)
1159 == IWL_INVALID_STATION
) {
1160 IWL_ERROR("Error adding AP address for transmit.\n");
1164 /* Init the hardware's rate fallback order based on the
1166 rc
= iwl3945_init_hw_rate_table(priv
);
1168 IWL_ERROR("Error setting HW rate table: %02X\n", rc
);
1175 static int iwl_send_bt_config(struct iwl_priv
*priv
)
1177 struct iwl_bt_cmd bt_cmd
= {
1185 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
1186 sizeof(struct iwl_bt_cmd
), &bt_cmd
);
1189 static int iwl_send_scan_abort(struct iwl_priv
*priv
)
1192 struct iwl_rx_packet
*res
;
1193 struct iwl_host_cmd cmd
= {
1194 .id
= REPLY_SCAN_ABORT_CMD
,
1195 .meta
.flags
= CMD_WANT_SKB
,
1198 /* If there isn't a scan actively going on in the hardware
1199 * then we are in between scan bands and not actually
1200 * actively scanning, so don't send the abort command */
1201 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1202 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1206 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1208 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1212 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1213 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
1214 /* The scan abort will return 1 for success or
1215 * 2 for "failure". A failure condition can be
1216 * due to simply not being in an active scan which
1217 * can occur if we send the scan abort before we
1218 * the microcode has notified us that a scan is
1220 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
1221 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1222 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
1225 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1230 static int iwl_card_state_sync_callback(struct iwl_priv
*priv
,
1231 struct iwl_cmd
*cmd
,
1232 struct sk_buff
*skb
)
1240 * Use: Sets the internal card state to enable, disable, or halt
1242 * When in the 'enable' state the card operates as normal.
1243 * When in the 'disable' state, the card enters into a low power mode.
1244 * When in the 'halt' state, the card is shut down and must be fully
1245 * restarted to come back on.
1247 static int iwl_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1249 struct iwl_host_cmd cmd
= {
1250 .id
= REPLY_CARD_STATE_CMD
,
1253 .meta
.flags
= meta_flag
,
1256 if (meta_flag
& CMD_ASYNC
)
1257 cmd
.meta
.u
.callback
= iwl_card_state_sync_callback
;
1259 return iwl_send_cmd(priv
, &cmd
);
1262 static int iwl_add_sta_sync_callback(struct iwl_priv
*priv
,
1263 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1265 struct iwl_rx_packet
*res
= NULL
;
1268 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1272 res
= (struct iwl_rx_packet
*)skb
->data
;
1273 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1274 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1279 switch (res
->u
.add_sta
.status
) {
1280 case ADD_STA_SUCCESS_MSK
:
1286 /* We didn't cache the SKB; let the caller free it */
1290 int iwl_send_add_station(struct iwl_priv
*priv
,
1291 struct iwl_addsta_cmd
*sta
, u8 flags
)
1293 struct iwl_rx_packet
*res
= NULL
;
1295 struct iwl_host_cmd cmd
= {
1296 .id
= REPLY_ADD_STA
,
1297 .len
= sizeof(struct iwl_addsta_cmd
),
1298 .meta
.flags
= flags
,
1302 if (flags
& CMD_ASYNC
)
1303 cmd
.meta
.u
.callback
= iwl_add_sta_sync_callback
;
1305 cmd
.meta
.flags
|= CMD_WANT_SKB
;
1307 rc
= iwl_send_cmd(priv
, &cmd
);
1309 if (rc
|| (flags
& CMD_ASYNC
))
1312 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1313 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1314 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1320 switch (res
->u
.add_sta
.status
) {
1321 case ADD_STA_SUCCESS_MSK
:
1322 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1326 IWL_WARNING("REPLY_ADD_STA failed\n");
1331 priv
->alloc_rxb_skb
--;
1332 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1337 static int iwl_update_sta_key_info(struct iwl_priv
*priv
,
1338 struct ieee80211_key_conf
*keyconf
,
1341 unsigned long flags
;
1342 __le16 key_flags
= 0;
1344 switch (keyconf
->alg
) {
1346 key_flags
|= STA_KEY_FLG_CCMP
;
1347 key_flags
|= cpu_to_le16(
1348 keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1349 key_flags
&= ~STA_KEY_FLG_INVALID
;
1357 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1358 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1359 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
1360 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
1363 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
1365 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
1366 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1367 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1369 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1371 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1372 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1376 static int iwl_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
1378 unsigned long flags
;
1380 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1381 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl_hw_key
));
1382 memset(&priv
->stations
[sta_id
].sta
.key
, 0, sizeof(struct iwl_keyinfo
));
1383 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
1384 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1385 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1386 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1388 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1389 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1393 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
1395 struct list_head
*element
;
1397 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1398 priv
->frames_count
);
1400 while (!list_empty(&priv
->free_frames
)) {
1401 element
= priv
->free_frames
.next
;
1403 kfree(list_entry(element
, struct iwl_frame
, list
));
1404 priv
->frames_count
--;
1407 if (priv
->frames_count
) {
1408 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1409 priv
->frames_count
);
1410 priv
->frames_count
= 0;
1414 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
1416 struct iwl_frame
*frame
;
1417 struct list_head
*element
;
1418 if (list_empty(&priv
->free_frames
)) {
1419 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1421 IWL_ERROR("Could not allocate frame!\n");
1425 priv
->frames_count
++;
1429 element
= priv
->free_frames
.next
;
1431 return list_entry(element
, struct iwl_frame
, list
);
1434 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
1436 memset(frame
, 0, sizeof(*frame
));
1437 list_add(&frame
->list
, &priv
->free_frames
);
1440 unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
1441 struct ieee80211_hdr
*hdr
,
1442 const u8
*dest
, int left
)
1445 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1446 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1447 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1450 if (priv
->ibss_beacon
->len
> left
)
1453 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1455 return priv
->ibss_beacon
->len
;
1458 static int iwl_rate_index_from_plcp(int plcp
)
1462 for (i
= 0; i
< IWL_RATE_COUNT
; i
++)
1463 if (iwl_rates
[i
].plcp
== plcp
)
1468 static u8
iwl_rate_get_lowest_plcp(int rate_mask
)
1472 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1473 i
= iwl_rates
[i
].next_ieee
) {
1474 if (rate_mask
& (1 << i
))
1475 return iwl_rates
[i
].plcp
;
1478 return IWL_RATE_INVALID
;
1481 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
1483 struct iwl_frame
*frame
;
1484 unsigned int frame_size
;
1488 frame
= iwl_get_free_frame(priv
);
1491 IWL_ERROR("Could not obtain free frame buffer for beacon "
1496 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1497 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
&
1499 if (rate
== IWL_INVALID_RATE
)
1500 rate
= IWL_RATE_6M_PLCP
;
1502 rate
= iwl_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1503 if (rate
== IWL_INVALID_RATE
)
1504 rate
= IWL_RATE_1M_PLCP
;
1507 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
1509 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1512 iwl_free_frame(priv
, frame
);
1517 /******************************************************************************
1519 * EEPROM related functions
1521 ******************************************************************************/
1523 static void get_eeprom_mac(struct iwl_priv
*priv
, u8
*mac
)
1525 memcpy(mac
, priv
->eeprom
.mac_address
, 6);
1529 * iwl_eeprom_init - read EEPROM contents
1531 * Load the EEPROM from adapter into priv->eeprom
1533 * NOTE: This routine uses the non-debug IO access functions.
1535 int iwl_eeprom_init(struct iwl_priv
*priv
)
1537 u16
*e
= (u16
*)&priv
->eeprom
;
1538 u32 gp
= iwl_read32(priv
, CSR_EEPROM_GP
);
1540 int sz
= sizeof(priv
->eeprom
);
1545 /* The EEPROM structure has several padding buffers within it
1546 * and when adding new EEPROM maps is subject to programmer errors
1547 * which may be very difficult to identify without explicitly
1548 * checking the resulting size of the eeprom map. */
1549 BUILD_BUG_ON(sizeof(priv
->eeprom
) != IWL_EEPROM_IMAGE_SIZE
);
1551 if ((gp
& CSR_EEPROM_GP_VALID_MSK
) == CSR_EEPROM_GP_BAD_SIGNATURE
) {
1552 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp
);
1556 rc
= iwl_eeprom_aqcuire_semaphore(priv
);
1558 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1562 /* eeprom is an array of 16bit values */
1563 for (addr
= 0; addr
< sz
; addr
+= sizeof(u16
)) {
1564 _iwl_write32(priv
, CSR_EEPROM_REG
, addr
<< 1);
1565 _iwl_clear_bit(priv
, CSR_EEPROM_REG
, CSR_EEPROM_REG_BIT_CMD
);
1567 for (i
= 0; i
< IWL_EEPROM_ACCESS_TIMEOUT
;
1568 i
+= IWL_EEPROM_ACCESS_DELAY
) {
1569 r
= _iwl_read_restricted(priv
, CSR_EEPROM_REG
);
1570 if (r
& CSR_EEPROM_REG_READ_VALID_MSK
)
1572 udelay(IWL_EEPROM_ACCESS_DELAY
);
1575 if (!(r
& CSR_EEPROM_REG_READ_VALID_MSK
)) {
1576 IWL_ERROR("Time out reading EEPROM[%d]", addr
);
1579 e
[addr
/ 2] = le16_to_cpu(r
>> 16);
1585 /******************************************************************************
1587 * Misc. internal state and helper functions
1589 ******************************************************************************/
1590 #ifdef CONFIG_IWLWIFI_DEBUG
1593 * iwl_report_frame - dump frame to syslog during debug sessions
1595 * hack this function to show different aspects of received frames,
1596 * including selective frame dumps.
1597 * group100 parameter selects whether to show 1 out of 100 good frames.
1599 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1600 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1601 * is 3945-specific and gives bad output for 4965. Need to split the
1602 * functionality, keep common stuff here.
1604 void iwl_report_frame(struct iwl_priv
*priv
,
1605 struct iwl_rx_packet
*pkt
,
1606 struct ieee80211_hdr
*header
, int group100
)
1609 u32 print_summary
= 0;
1610 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
1627 struct iwl_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
1628 struct iwl_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
1629 struct iwl_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
1630 u8
*data
= IWL_RX_DATA(pkt
);
1633 fc
= le16_to_cpu(header
->frame_control
);
1634 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
1637 channel
= le16_to_cpu(rx_hdr
->channel
);
1638 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
1639 rate_sym
= rx_hdr
->rate
;
1640 length
= le16_to_cpu(rx_hdr
->len
);
1642 /* end-of-frame status and timestamp */
1643 status
= le32_to_cpu(rx_end
->status
);
1644 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
1645 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
1646 tsf
= le64_to_cpu(rx_end
->timestamp
);
1648 /* signal statistics */
1649 rssi
= rx_stats
->rssi
;
1650 agc
= rx_stats
->agc
;
1651 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
1652 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
1654 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1656 /* if data frame is to us and all is good,
1657 * (optionally) print summary for only 1 out of every 100 */
1658 if (to_us
&& (fc
& ~IEEE80211_FCTL_PROTECTED
) ==
1659 (IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
1662 print_summary
= 1; /* print each frame */
1663 else if (priv
->framecnt_to_us
< 100) {
1664 priv
->framecnt_to_us
++;
1667 priv
->framecnt_to_us
= 0;
1672 /* print summary for all other frames */
1676 if (print_summary
) {
1681 title
= "100Frames";
1682 else if (fc
& IEEE80211_FCTL_RETRY
)
1684 else if (ieee80211_is_assoc_response(fc
))
1686 else if (ieee80211_is_reassoc_response(fc
))
1688 else if (ieee80211_is_probe_response(fc
)) {
1690 print_dump
= 1; /* dump frame contents */
1691 } else if (ieee80211_is_beacon(fc
)) {
1693 print_dump
= 1; /* dump frame contents */
1694 } else if (ieee80211_is_atim(fc
))
1696 else if (ieee80211_is_auth(fc
))
1698 else if (ieee80211_is_deauth(fc
))
1700 else if (ieee80211_is_disassoc(fc
))
1705 rate
= iwl_rate_index_from_plcp(rate_sym
);
1709 rate
= iwl_rates
[rate
].ieee
/ 2;
1711 /* print frame summary.
1712 * MAC addresses show just the last byte (for brevity),
1713 * but you can hack it to show more, if you'd like to. */
1715 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1716 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1717 title
, fc
, header
->addr1
[5],
1718 length
, rssi
, channel
, rate
);
1720 /* src/dst addresses assume managed mode */
1721 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1722 "src=0x%02x, rssi=%u, tim=%lu usec, "
1723 "phy=0x%02x, chnl=%d\n",
1724 title
, fc
, header
->addr1
[5],
1725 header
->addr3
[5], rssi
,
1726 tsf_low
- priv
->scan_start_tsf
,
1727 phy_flags
, channel
);
1731 iwl_print_hex_dump(IWL_DL_RX
, data
, length
);
1735 static void iwl_unset_hw_setting(struct iwl_priv
*priv
)
1737 if (priv
->hw_setting
.shared_virt
)
1738 pci_free_consistent(priv
->pci_dev
,
1739 sizeof(struct iwl_shared
),
1740 priv
->hw_setting
.shared_virt
,
1741 priv
->hw_setting
.shared_phys
);
1745 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1747 * return : set the bit for each supported rate insert in ie
1749 static u16
iwl_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1750 u16 basic_rate
, int *left
)
1752 u16 ret_rates
= 0, bit
;
1757 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1758 if (bit
& supported_rate
) {
1760 rates
[*cnt
] = iwl_rates
[i
].ieee
|
1761 ((bit
& basic_rate
) ? 0x80 : 0x00);
1765 (*cnt
>= IWL_SUPPORTED_RATES_IE_LEN
))
1774 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1776 static u16
iwl_fill_probe_req(struct iwl_priv
*priv
,
1777 struct ieee80211_mgmt
*frame
,
1778 int left
, int is_direct
)
1782 u16 active_rates
, ret_rates
, cck_rates
;
1784 /* Make sure there is enough space for the probe request,
1785 * two mandatory IEs and the data */
1791 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1792 memcpy(frame
->da
, BROADCAST_ADDR
, ETH_ALEN
);
1793 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1794 memcpy(frame
->bssid
, BROADCAST_ADDR
, ETH_ALEN
);
1795 frame
->seq_ctrl
= 0;
1797 /* fill in our indirect SSID IE */
1804 pos
= &(frame
->u
.probe_req
.variable
[0]);
1805 *pos
++ = WLAN_EID_SSID
;
1808 /* fill in our direct SSID IE... */
1811 left
-= 2 + priv
->essid_len
;
1814 /* ... fill it in... */
1815 *pos
++ = WLAN_EID_SSID
;
1816 *pos
++ = priv
->essid_len
;
1817 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1818 pos
+= priv
->essid_len
;
1819 len
+= 2 + priv
->essid_len
;
1822 /* fill in supported rate */
1828 /* ... fill it in... */
1829 *pos
++ = WLAN_EID_SUPP_RATES
;
1832 priv
->active_rate
= priv
->rates_mask
;
1833 active_rates
= priv
->active_rate
;
1834 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1836 cck_rates
= IWL_CCK_RATES_MASK
& active_rates
;
1837 ret_rates
= iwl_supported_rate_to_ie(pos
, cck_rates
,
1838 priv
->active_rate_basic
, &left
);
1839 active_rates
&= ~ret_rates
;
1841 ret_rates
= iwl_supported_rate_to_ie(pos
, active_rates
,
1842 priv
->active_rate_basic
, &left
);
1843 active_rates
&= ~ret_rates
;
1847 if (active_rates
== 0)
1850 /* fill in supported extended rate */
1855 /* ... fill it in... */
1856 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1858 iwl_supported_rate_to_ie(pos
, active_rates
,
1859 priv
->active_rate_basic
, &left
);
1870 #ifdef CONFIG_IWLWIFI_QOS
1871 static int iwl_send_qos_params_command(struct iwl_priv
*priv
,
1872 struct iwl_qosparam_cmd
*qos
)
1875 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1876 sizeof(struct iwl_qosparam_cmd
), qos
);
1879 static void iwl_reset_qos(struct iwl_priv
*priv
)
1885 unsigned long flags
;
1888 spin_lock_irqsave(&priv
->lock
, flags
);
1889 priv
->qos_data
.qos_active
= 0;
1891 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) {
1892 if (priv
->qos_data
.qos_enable
)
1893 priv
->qos_data
.qos_active
= 1;
1894 if (!(priv
->active_rate
& 0xfff0)) {
1898 } else if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1899 if (priv
->qos_data
.qos_enable
)
1900 priv
->qos_data
.qos_active
= 1;
1901 } else if (!(priv
->staging_rxon
.flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
1906 if (priv
->qos_data
.qos_active
)
1909 priv
->qos_data
.def_qos_parm
.ac
[0].cw_min
= cpu_to_le16(cw_min
);
1910 priv
->qos_data
.def_qos_parm
.ac
[0].cw_max
= cpu_to_le16(cw_max
);
1911 priv
->qos_data
.def_qos_parm
.ac
[0].aifsn
= aifs
;
1912 priv
->qos_data
.def_qos_parm
.ac
[0].edca_txop
= 0;
1913 priv
->qos_data
.def_qos_parm
.ac
[0].reserved1
= 0;
1915 if (priv
->qos_data
.qos_active
) {
1917 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
= cpu_to_le16(cw_min
);
1918 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
= cpu_to_le16(cw_max
);
1919 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 7;
1920 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1921 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1924 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1925 cpu_to_le16((cw_min
+ 1) / 2 - 1);
1926 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
1927 cpu_to_le16(cw_max
);
1928 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
1930 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1933 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1935 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1938 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1939 cpu_to_le16((cw_min
+ 1) / 4 - 1);
1940 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
1941 cpu_to_le16((cw_max
+ 1) / 2 - 1);
1942 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= 2;
1943 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1945 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1948 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
=
1951 for (i
= 1; i
< 4; i
++) {
1952 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_min
=
1953 cpu_to_le16(cw_min
);
1954 priv
->qos_data
.def_qos_parm
.ac
[i
].cw_max
=
1955 cpu_to_le16(cw_max
);
1956 priv
->qos_data
.def_qos_parm
.ac
[i
].aifsn
= aifs
;
1957 priv
->qos_data
.def_qos_parm
.ac
[i
].edca_txop
= 0;
1958 priv
->qos_data
.def_qos_parm
.ac
[i
].reserved1
= 0;
1961 IWL_DEBUG_QOS("set QoS to default \n");
1963 spin_unlock_irqrestore(&priv
->lock
, flags
);
1966 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
1968 unsigned long flags
;
1973 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1976 if (!priv
->qos_data
.qos_enable
)
1979 spin_lock_irqsave(&priv
->lock
, flags
);
1980 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
1982 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
1983 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
1984 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1985 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
1987 if (priv
->qos_data
.qos_active
)
1988 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1989 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
1991 spin_unlock_irqrestore(&priv
->lock
, flags
);
1993 if (force
|| iwl_is_associated(priv
)) {
1994 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1995 priv
->qos_data
.qos_active
);
1997 iwl_send_qos_params_command(priv
,
1998 &(priv
->qos_data
.def_qos_parm
));
2002 #endif /* CONFIG_IWLWIFI_QOS */
2004 * Power management (not Tx power!) functions
2006 #define MSEC_TO_USEC 1024
2008 #define NOSLP __constant_cpu_to_le32(0)
2009 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2010 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2011 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2012 __constant_cpu_to_le32(X1), \
2013 __constant_cpu_to_le32(X2), \
2014 __constant_cpu_to_le32(X3), \
2015 __constant_cpu_to_le32(X4)}
2018 /* default power management (not Tx power) table values */
2020 static struct iwl_power_vec_entry range_0
[IWL_POWER_AC
] = {
2021 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2022 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2023 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2024 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2025 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2026 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2030 static struct iwl_power_vec_entry range_1
[IWL_POWER_AC
] = {
2031 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2032 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2033 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2034 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2035 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2036 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2037 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2038 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2039 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2040 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2043 int iwl_power_init_handle(struct iwl_priv
*priv
)
2046 struct iwl_power_mgr
*pow_data
;
2047 int size
= sizeof(struct iwl_power_vec_entry
) * IWL_POWER_AC
;
2050 IWL_DEBUG_POWER("Initialize power \n");
2052 pow_data
= &(priv
->power_data
);
2054 memset(pow_data
, 0, sizeof(*pow_data
));
2056 pow_data
->active_index
= IWL_POWER_RANGE_0
;
2057 pow_data
->dtim_val
= 0xffff;
2059 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
2060 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
2062 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
2066 struct iwl_powertable_cmd
*cmd
;
2068 IWL_DEBUG_POWER("adjust power command flags\n");
2070 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
2071 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
2074 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
2076 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
2082 static int iwl_update_power_cmd(struct iwl_priv
*priv
,
2083 struct iwl_powertable_cmd
*cmd
, u32 mode
)
2088 struct iwl_power_vec_entry
*range
;
2090 struct iwl_power_mgr
*pow_data
;
2092 if (mode
> IWL_POWER_INDEX_5
) {
2093 IWL_DEBUG_POWER("Error invalid power mode \n");
2096 pow_data
= &(priv
->power_data
);
2098 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
2099 range
= &pow_data
->pwr_range_0
[0];
2101 range
= &pow_data
->pwr_range_1
[1];
2103 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl_powertable_cmd
));
2105 #ifdef IWL_MAC80211_DISABLE
2106 if (priv
->assoc_network
!= NULL
) {
2107 unsigned long flags
;
2109 period
= priv
->assoc_network
->tim
.tim_period
;
2111 #endif /*IWL_MAC80211_DISABLE */
2112 skip
= range
[mode
].no_dtim
;
2121 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2123 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
2124 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
2125 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
2128 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
2129 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
2130 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
2133 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
2134 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
2135 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
2136 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2137 le32_to_cpu(cmd
->sleep_interval
[0]),
2138 le32_to_cpu(cmd
->sleep_interval
[1]),
2139 le32_to_cpu(cmd
->sleep_interval
[2]),
2140 le32_to_cpu(cmd
->sleep_interval
[3]),
2141 le32_to_cpu(cmd
->sleep_interval
[4]));
2146 static int iwl_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
2148 u32 final_mode
= mode
;
2150 struct iwl_powertable_cmd cmd
;
2152 /* If on battery, set to 3,
2153 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2154 * else user level */
2156 case IWL_POWER_BATTERY
:
2157 final_mode
= IWL_POWER_INDEX_3
;
2160 final_mode
= IWL_POWER_MODE_CAM
;
2167 iwl_update_power_cmd(priv
, &cmd
, final_mode
);
2169 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
2171 if (final_mode
== IWL_POWER_MODE_CAM
)
2172 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
2174 set_bit(STATUS_POWER_PMI
, &priv
->status
);
2179 int iwl_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2181 /* Filter incoming packets to determine if they are targeted toward
2182 * this network, discarding packets coming from ourselves */
2183 switch (priv
->iw_mode
) {
2184 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
2185 /* packets from our adapter are dropped (echo) */
2186 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
2188 /* {broad,multi}cast packets to our IBSS go through */
2189 if (is_multicast_ether_addr(header
->addr1
))
2190 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
2191 /* packets to our adapter go through */
2192 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2193 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
2194 /* packets from our adapter are dropped (echo) */
2195 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
2197 /* {broad,multi}cast packets to our BSS go through */
2198 if (is_multicast_ether_addr(header
->addr1
))
2199 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
2200 /* packets to our adapter go through */
2201 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
2207 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2209 const char *iwl_get_tx_fail_reason(u32 status
)
2211 switch (status
& TX_STATUS_MSK
) {
2212 case TX_STATUS_SUCCESS
:
2214 TX_STATUS_ENTRY(SHORT_LIMIT
);
2215 TX_STATUS_ENTRY(LONG_LIMIT
);
2216 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
2217 TX_STATUS_ENTRY(MGMNT_ABORT
);
2218 TX_STATUS_ENTRY(NEXT_FRAG
);
2219 TX_STATUS_ENTRY(LIFE_EXPIRE
);
2220 TX_STATUS_ENTRY(DEST_PS
);
2221 TX_STATUS_ENTRY(ABORTED
);
2222 TX_STATUS_ENTRY(BT_RETRY
);
2223 TX_STATUS_ENTRY(STA_INVALID
);
2224 TX_STATUS_ENTRY(FRAG_DROPPED
);
2225 TX_STATUS_ENTRY(TID_DISABLE
);
2226 TX_STATUS_ENTRY(FRAME_FLUSHED
);
2227 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
2228 TX_STATUS_ENTRY(TX_LOCKED
);
2229 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
2236 * iwl_scan_cancel - Cancel any currently executing HW scan
2238 * NOTE: priv->mutex is not required before calling this function
2240 static int iwl_scan_cancel(struct iwl_priv
*priv
)
2242 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2243 clear_bit(STATUS_SCANNING
, &priv
->status
);
2247 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2248 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2249 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2250 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
2251 queue_work(priv
->workqueue
, &priv
->abort_scan
);
2254 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2256 return test_bit(STATUS_SCANNING
, &priv
->status
);
2263 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2264 * @ms: amount of time to wait (in milliseconds) for scan to abort
2266 * NOTE: priv->mutex must be held before calling this function
2268 static int iwl_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
2270 unsigned long now
= jiffies
;
2273 ret
= iwl_scan_cancel(priv
);
2275 mutex_unlock(&priv
->mutex
);
2276 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
2277 test_bit(STATUS_SCANNING
, &priv
->status
))
2279 mutex_lock(&priv
->mutex
);
2281 return test_bit(STATUS_SCANNING
, &priv
->status
);
2287 static void iwl_sequence_reset(struct iwl_priv
*priv
)
2289 /* Reset ieee stats */
2291 /* We don't reset the net_device_stats (ieee->stats) on
2294 priv
->last_seq_num
= -1;
2295 priv
->last_frag_num
= -1;
2296 priv
->last_packet_time
= 0;
2298 iwl_scan_cancel(priv
);
2301 #define MAX_UCODE_BEACON_INTERVAL 1024
2302 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2304 static __le16
iwl_adjust_beacon_interval(u16 beacon_val
)
2307 u16 beacon_factor
= 0;
2310 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
2311 / MAX_UCODE_BEACON_INTERVAL
;
2312 new_val
= beacon_val
/ beacon_factor
;
2314 return cpu_to_le16(new_val
);
2317 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
2319 u64 interval_tm_unit
;
2321 unsigned long flags
;
2322 struct ieee80211_conf
*conf
= NULL
;
2325 conf
= ieee80211_get_hw_conf(priv
->hw
);
2327 spin_lock_irqsave(&priv
->lock
, flags
);
2328 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp1
);
2329 priv
->rxon_timing
.timestamp
.dw
[0] = cpu_to_le32(priv
->timestamp0
);
2331 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
2333 tsf
= priv
->timestamp1
;
2334 tsf
= ((tsf
<< 32) | priv
->timestamp0
);
2336 beacon_int
= priv
->beacon_int
;
2337 spin_unlock_irqrestore(&priv
->lock
, flags
);
2339 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
2340 if (beacon_int
== 0) {
2341 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
2342 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
2344 priv
->rxon_timing
.beacon_interval
=
2345 cpu_to_le16(beacon_int
);
2346 priv
->rxon_timing
.beacon_interval
=
2347 iwl_adjust_beacon_interval(
2348 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2351 priv
->rxon_timing
.atim_window
= 0;
2353 priv
->rxon_timing
.beacon_interval
=
2354 iwl_adjust_beacon_interval(conf
->beacon_int
);
2355 /* TODO: we need to get atim_window from upper stack
2356 * for now we set to 0 */
2357 priv
->rxon_timing
.atim_window
= 0;
2361 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
2362 result
= do_div(tsf
, interval_tm_unit
);
2363 priv
->rxon_timing
.beacon_init_val
=
2364 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
2367 ("beacon interval %d beacon timer %d beacon tim %d\n",
2368 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
2369 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
2370 le16_to_cpu(priv
->rxon_timing
.atim_window
));
2373 static int iwl_scan_initiate(struct iwl_priv
*priv
)
2375 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
2376 IWL_ERROR("APs don't scan.\n");
2380 if (!iwl_is_ready_rf(priv
)) {
2381 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2385 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2386 IWL_DEBUG_SCAN("Scan already in progress.\n");
2390 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
2391 IWL_DEBUG_SCAN("Scan request while abort pending. "
2396 IWL_DEBUG_INFO("Starting scan...\n");
2397 priv
->scan_bands
= 2;
2398 set_bit(STATUS_SCANNING
, &priv
->status
);
2399 priv
->scan_start
= jiffies
;
2400 priv
->scan_pass_start
= priv
->scan_start
;
2402 queue_work(priv
->workqueue
, &priv
->request_scan
);
2407 static int iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
2409 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
2412 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
2414 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
2419 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
)
2421 if (phymode
== MODE_IEEE80211A
) {
2422 priv
->staging_rxon
.flags
&=
2423 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
2424 | RXON_FLG_CCK_MSK
);
2425 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2427 /* Copied from iwl_bg_post_associate() */
2428 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2429 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2431 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2433 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
2434 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2436 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
2437 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
2438 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
2443 * initilize rxon structure with default values fromm eeprom
2445 static void iwl_connection_init_rx_config(struct iwl_priv
*priv
)
2447 const struct iwl_channel_info
*ch_info
;
2449 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2451 switch (priv
->iw_mode
) {
2452 case IEEE80211_IF_TYPE_AP
:
2453 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2456 case IEEE80211_IF_TYPE_STA
:
2457 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2458 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2461 case IEEE80211_IF_TYPE_IBSS
:
2462 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2463 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2464 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2465 RXON_FILTER_ACCEPT_GRP_MSK
;
2468 case IEEE80211_IF_TYPE_MNTR
:
2469 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2470 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2471 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2476 /* TODO: Figure out when short_preamble would be set and cache from
2478 if (!hw_to_local(priv
->hw
)->short_preamble
)
2479 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2481 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2484 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
,
2485 le16_to_cpu(priv
->staging_rxon
.channel
));
2488 ch_info
= &priv
->channel_info
[0];
2491 * in some case A channels are all non IBSS
2492 * in this case force B/G channel
2494 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2495 !(is_channel_ibss(ch_info
)))
2496 ch_info
= &priv
->channel_info
[0];
2498 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2499 if (is_channel_a_band(ch_info
))
2500 priv
->phymode
= MODE_IEEE80211A
;
2502 priv
->phymode
= MODE_IEEE80211G
;
2504 iwl_set_flags_for_phymode(priv
, priv
->phymode
);
2506 priv
->staging_rxon
.ofdm_basic_rates
=
2507 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2508 priv
->staging_rxon
.cck_basic_rates
=
2509 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2512 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
2514 if (!iwl_is_ready_rf(priv
))
2517 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2518 const struct iwl_channel_info
*ch_info
;
2520 ch_info
= iwl_get_channel_info(priv
,
2522 le16_to_cpu(priv
->staging_rxon
.channel
));
2524 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2525 IWL_ERROR("channel %d not IBSS channel\n",
2526 le16_to_cpu(priv
->staging_rxon
.channel
));
2531 cancel_delayed_work(&priv
->scan_check
);
2532 if (iwl_scan_cancel_timeout(priv
, 100)) {
2533 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2534 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2538 priv
->iw_mode
= mode
;
2540 iwl_connection_init_rx_config(priv
);
2541 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2543 iwl_clear_stations_table(priv
);
2545 iwl_commit_rxon(priv
);
2550 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2551 struct ieee80211_tx_control
*ctl
,
2552 struct iwl_cmd
*cmd
,
2553 struct sk_buff
*skb_frag
,
2556 struct iwl_hw_key
*keyinfo
= &priv
->stations
[ctl
->key_idx
].keyinfo
;
2558 switch (keyinfo
->alg
) {
2560 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2561 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2562 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2567 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2570 memcpy(cmd
->cmd
.tx
.tkip_mic
.byte
, skb_frag
->tail
- 8,
2573 memset(cmd
->cmd
.tx
.tkip_mic
.byte
, 0, 8);
2578 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2579 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2581 if (keyinfo
->keylen
== 13)
2582 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2584 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2586 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2587 "with key %d\n", ctl
->key_idx
);
2591 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2597 * handle build REPLY_TX command notification.
2599 static void iwl_build_tx_cmd_basic(struct iwl_priv
*priv
,
2600 struct iwl_cmd
*cmd
,
2601 struct ieee80211_tx_control
*ctrl
,
2602 struct ieee80211_hdr
*hdr
,
2603 int is_unicast
, u8 std_id
)
2606 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2607 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2609 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2610 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2611 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2612 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2613 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2614 if (ieee80211_is_probe_response(fc
) &&
2615 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2616 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2618 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2619 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2622 cmd
->cmd
.tx
.sta_id
= std_id
;
2623 if (ieee80211_get_morefrag(hdr
))
2624 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2626 qc
= ieee80211_get_qos_ctrl(hdr
);
2628 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2629 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2631 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2633 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2634 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2635 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2636 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2637 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2638 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2641 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2642 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2644 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2645 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2646 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2647 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2648 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2651 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
=
2654 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2656 cmd
->cmd
.tx
.driver_txop
= 0;
2657 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2658 cmd
->cmd
.tx
.next_frame_len
= 0;
2661 static int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2664 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2666 /* If this frame is broadcast or not data then use the broadcast
2668 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2669 is_multicast_ether_addr(hdr
->addr1
))
2670 return priv
->hw_setting
.bcast_sta_id
;
2672 switch (priv
->iw_mode
) {
2674 /* If this frame is part of a BSS network (we're a station), then
2675 * we use the AP's station id */
2676 case IEEE80211_IF_TYPE_STA
:
2679 /* If we are an AP, then find the station, or use BCAST */
2680 case IEEE80211_IF_TYPE_AP
:
2681 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2682 if (sta_id
!= IWL_INVALID_STATION
)
2684 return priv
->hw_setting
.bcast_sta_id
;
2686 /* If this frame is part of a IBSS network, then we use the
2687 * target specific station id */
2688 case IEEE80211_IF_TYPE_IBSS
: {
2689 DECLARE_MAC_BUF(mac
);
2691 sta_id
= iwl_hw_find_station(priv
, hdr
->addr1
);
2692 if (sta_id
!= IWL_INVALID_STATION
)
2695 sta_id
= iwl_add_station(priv
, hdr
->addr1
, 0, CMD_ASYNC
);
2697 if (sta_id
!= IWL_INVALID_STATION
)
2700 IWL_DEBUG_DROP("Station %s not in station map. "
2701 "Defaulting to broadcast...\n",
2702 print_mac(mac
, hdr
->addr1
));
2703 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2704 return priv
->hw_setting
.bcast_sta_id
;
2707 IWL_WARNING("Unkown mode of operation: %d", priv
->iw_mode
);
2708 return priv
->hw_setting
.bcast_sta_id
;
2713 * start REPLY_TX command process
2715 static int iwl_tx_skb(struct iwl_priv
*priv
,
2716 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2718 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2719 struct iwl_tfd_frame
*tfd
;
2721 int txq_id
= ctl
->queue
;
2722 struct iwl_tx_queue
*txq
= NULL
;
2723 struct iwl_queue
*q
= NULL
;
2724 dma_addr_t phys_addr
;
2725 dma_addr_t txcmd_phys
;
2726 struct iwl_cmd
*out_cmd
= NULL
;
2727 u16 len
, idx
, len_org
;
2728 u8 id
, hdr_len
, unicast
;
2733 u8 wait_write_ptr
= 0;
2734 unsigned long flags
;
2737 spin_lock_irqsave(&priv
->lock
, flags
);
2738 if (iwl_is_rfkill(priv
)) {
2739 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2743 if (!priv
->interface_id
) {
2744 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2748 if ((ctl
->tx_rate
& 0xFF) == IWL_INVALID_RATE
) {
2749 IWL_ERROR("ERROR: No TX rate available.\n");
2753 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2756 fc
= le16_to_cpu(hdr
->frame_control
);
2758 #ifdef CONFIG_IWLWIFI_DEBUG
2759 if (ieee80211_is_auth(fc
))
2760 IWL_DEBUG_TX("Sending AUTH frame\n");
2761 else if (ieee80211_is_assoc_request(fc
))
2762 IWL_DEBUG_TX("Sending ASSOC frame\n");
2763 else if (ieee80211_is_reassoc_request(fc
))
2764 IWL_DEBUG_TX("Sending REASSOC frame\n");
2767 if (!iwl_is_associated(priv
) &&
2768 ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
)) {
2769 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2773 spin_unlock_irqrestore(&priv
->lock
, flags
);
2775 hdr_len
= ieee80211_get_hdrlen(fc
);
2776 sta_id
= iwl_get_sta_id(priv
, hdr
);
2777 if (sta_id
== IWL_INVALID_STATION
) {
2778 DECLARE_MAC_BUF(mac
);
2780 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2781 print_mac(mac
, hdr
->addr1
));
2785 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2787 qc
= ieee80211_get_qos_ctrl(hdr
);
2789 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2790 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2792 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2794 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2797 txq
= &priv
->txq
[txq_id
];
2800 spin_lock_irqsave(&priv
->lock
, flags
);
2802 tfd
= &txq
->bd
[q
->first_empty
];
2803 memset(tfd
, 0, sizeof(*tfd
));
2804 control_flags
= (u32
*) tfd
;
2805 idx
= get_cmd_index(q
, q
->first_empty
, 0);
2807 memset(&(txq
->txb
[q
->first_empty
]), 0, sizeof(struct iwl_tx_info
));
2808 txq
->txb
[q
->first_empty
].skb
[0] = skb
;
2809 memcpy(&(txq
->txb
[q
->first_empty
].status
.control
),
2810 ctl
, sizeof(struct ieee80211_tx_control
));
2811 out_cmd
= &txq
->cmd
[idx
];
2812 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2813 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2814 out_cmd
->hdr
.cmd
= REPLY_TX
;
2815 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2816 INDEX_TO_SEQ(q
->first_empty
)));
2817 /* copy frags header */
2818 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2820 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2821 len
= priv
->hw_setting
.tx_cmd_len
+
2822 sizeof(struct iwl_cmd_header
) + hdr_len
;
2825 len
= (len
+ 3) & ~3;
2832 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2833 offsetof(struct iwl_cmd
, hdr
);
2835 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2837 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2838 iwl_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, 0);
2840 /* 802.11 null functions have no payload... */
2841 len
= skb
->len
- hdr_len
;
2843 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2844 len
, PCI_DMA_TODEVICE
);
2845 iwl_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2848 /* If there is no payload, then only one TFD is used */
2850 *control_flags
= TFD_CTL_COUNT_SET(1);
2852 *control_flags
= TFD_CTL_COUNT_SET(2) |
2853 TFD_CTL_PAD_SET(U32_PAD(len
));
2855 len
= (u16
)skb
->len
;
2856 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2858 /* TODO need this for burst mode later on */
2859 iwl_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2861 /* set is_hcca to 0; it probably will never be implemented */
2862 iwl_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2864 out_cmd
->cmd
.tx
.tx_flags
&= ~TX_CMD_FLG_ANT_A_MSK
;
2865 out_cmd
->cmd
.tx
.tx_flags
&= ~TX_CMD_FLG_ANT_B_MSK
;
2867 if (!ieee80211_get_morefrag(hdr
)) {
2868 txq
->need_update
= 1;
2870 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2871 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2875 txq
->need_update
= 0;
2878 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2879 sizeof(out_cmd
->cmd
.tx
));
2881 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2882 ieee80211_get_hdrlen(fc
));
2884 q
->first_empty
= iwl_queue_inc_wrap(q
->first_empty
, q
->n_bd
);
2885 rc
= iwl_tx_queue_update_write_ptr(priv
, txq
);
2886 spin_unlock_irqrestore(&priv
->lock
, flags
);
2891 if ((iwl_queue_space(q
) < q
->high_mark
)
2892 && priv
->mac80211_registered
) {
2893 if (wait_write_ptr
) {
2894 spin_lock_irqsave(&priv
->lock
, flags
);
2895 txq
->need_update
= 1;
2896 iwl_tx_queue_update_write_ptr(priv
, txq
);
2897 spin_unlock_irqrestore(&priv
->lock
, flags
);
2900 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2906 spin_unlock_irqrestore(&priv
->lock
, flags
);
2911 static void iwl_set_rate(struct iwl_priv
*priv
)
2913 const struct ieee80211_hw_mode
*hw
= NULL
;
2914 struct ieee80211_rate
*rate
;
2917 hw
= iwl_get_hw_mode(priv
, priv
->phymode
);
2919 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2923 priv
->active_rate
= 0;
2924 priv
->active_rate_basic
= 0;
2926 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2927 hw
->mode
== MODE_IEEE80211A
?
2928 'a' : ((hw
->mode
== MODE_IEEE80211B
) ? 'b' : 'g'));
2930 for (i
= 0; i
< hw
->num_rates
; i
++) {
2931 rate
= &(hw
->rates
[i
]);
2932 if ((rate
->val
< IWL_RATE_COUNT
) &&
2933 (rate
->flags
& IEEE80211_RATE_SUPPORTED
)) {
2934 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
2935 rate
->val
, iwl_rates
[rate
->val
].plcp
,
2936 (rate
->flags
& IEEE80211_RATE_BASIC
) ?
2938 priv
->active_rate
|= (1 << rate
->val
);
2939 if (rate
->flags
& IEEE80211_RATE_BASIC
)
2940 priv
->active_rate_basic
|= (1 << rate
->val
);
2942 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
2943 rate
->val
, iwl_rates
[rate
->val
].plcp
);
2946 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2947 priv
->active_rate
, priv
->active_rate_basic
);
2950 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2951 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2954 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
2955 priv
->staging_rxon
.cck_basic_rates
=
2956 ((priv
->active_rate_basic
&
2957 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
2959 priv
->staging_rxon
.cck_basic_rates
=
2960 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2962 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
2963 priv
->staging_rxon
.ofdm_basic_rates
=
2964 ((priv
->active_rate_basic
&
2965 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
2966 IWL_FIRST_OFDM_RATE
) & 0xFF;
2968 priv
->staging_rxon
.ofdm_basic_rates
=
2969 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2972 static void iwl_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
2974 unsigned long flags
;
2976 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
2979 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2980 disable_radio
? "OFF" : "ON");
2982 if (disable_radio
) {
2983 iwl_scan_cancel(priv
);
2984 /* FIXME: This is a workaround for AP */
2985 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
2986 spin_lock_irqsave(&priv
->lock
, flags
);
2987 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
2988 CSR_UCODE_SW_BIT_RFKILL
);
2989 spin_unlock_irqrestore(&priv
->lock
, flags
);
2990 iwl_send_card_state(priv
, CARD_STATE_CMD_DISABLE
, 0);
2991 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
2996 spin_lock_irqsave(&priv
->lock
, flags
);
2997 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2999 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3000 spin_unlock_irqrestore(&priv
->lock
, flags
);
3005 spin_lock_irqsave(&priv
->lock
, flags
);
3006 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3007 if (!iwl_grab_restricted_access(priv
))
3008 iwl_release_restricted_access(priv
);
3009 spin_unlock_irqrestore(&priv
->lock
, flags
);
3011 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
3012 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3013 "disabled by HW switch\n");
3017 queue_work(priv
->workqueue
, &priv
->restart
);
3021 void iwl_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
3022 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
3025 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
3027 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
3030 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
3033 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
3034 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3035 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3036 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3037 RX_RES_STATUS_BAD_ICV_MIC
)
3038 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
3039 case RX_RES_STATUS_SEC_TYPE_WEP
:
3040 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3041 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
3042 RX_RES_STATUS_DECRYPT_OK
) {
3043 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3044 stats
->flag
|= RX_FLAG_DECRYPTED
;
3053 void iwl_handle_data_packet_monitor(struct iwl_priv
*priv
,
3054 struct iwl_rx_mem_buffer
*rxb
,
3055 void *data
, short len
,
3056 struct ieee80211_rx_status
*stats
,
3059 struct iwl_rt_rx_hdr
*iwl_rt
;
3061 /* First cache any information we need before we overwrite
3062 * the information provided in the skb from the hardware */
3063 s8 signal
= stats
->ssi
;
3065 int rate
= stats
->rate
;
3066 u64 tsf
= stats
->mactime
;
3067 __le16 phy_flags_hw
= cpu_to_le16(phy_flags
);
3069 /* We received data from the HW, so stop the watchdog */
3070 if (len
> IWL_RX_BUF_SIZE
- sizeof(*iwl_rt
)) {
3071 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3075 /* copy the frame data to write after where the radiotap header goes */
3076 iwl_rt
= (void *)rxb
->skb
->data
;
3077 memmove(iwl_rt
->payload
, data
, len
);
3079 iwl_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3080 iwl_rt
->rt_hdr
.it_pad
= 0; /* always good to zero */
3082 /* total header + data */
3083 iwl_rt
->rt_hdr
.it_len
= cpu_to_le16(sizeof(*iwl_rt
));
3085 /* Set the size of the skb to the size of the frame */
3086 skb_put(rxb
->skb
, sizeof(*iwl_rt
) + len
);
3088 /* Big bitfield of all the fields we provide in radiotap */
3089 iwl_rt
->rt_hdr
.it_present
=
3090 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3091 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3092 (1 << IEEE80211_RADIOTAP_RATE
) |
3093 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3094 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3095 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3096 (1 << IEEE80211_RADIOTAP_ANTENNA
));
3098 /* Zero the flags, we'll add to them as we go */
3099 iwl_rt
->rt_flags
= 0;
3101 iwl_rt
->rt_tsf
= cpu_to_le64(tsf
);
3103 /* Convert to dBm */
3104 iwl_rt
->rt_dbmsignal
= signal
;
3105 iwl_rt
->rt_dbmnoise
= noise
;
3107 /* Convert the channel frequency and set the flags */
3108 iwl_rt
->rt_channelMHz
= cpu_to_le16(stats
->freq
);
3109 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3110 iwl_rt
->rt_chbitmask
=
3111 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_5GHZ
));
3112 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3113 iwl_rt
->rt_chbitmask
=
3114 cpu_to_le16((IEEE80211_CHAN_CCK
| IEEE80211_CHAN_2GHZ
));
3116 iwl_rt
->rt_chbitmask
=
3117 cpu_to_le16((IEEE80211_CHAN_OFDM
| IEEE80211_CHAN_2GHZ
));
3119 rate
= iwl_rate_index_from_plcp(rate
);
3121 iwl_rt
->rt_rate
= 0;
3123 iwl_rt
->rt_rate
= iwl_rates
[rate
].ieee
;
3125 /* antenna number */
3126 iwl_rt
->rt_antenna
=
3127 le16_to_cpu(phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
3129 /* set the preamble flag if we have it */
3130 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3131 iwl_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3133 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb
->skb
->len
);
3135 stats
->flag
|= RX_FLAG_RADIOTAP
;
3136 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3141 #define IWL_PACKET_RETRY_TIME HZ
3143 int is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
3145 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
3146 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
3147 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
3148 u16
*last_seq
, *last_frag
;
3149 unsigned long *last_time
;
3151 switch (priv
->iw_mode
) {
3152 case IEEE80211_IF_TYPE_IBSS
:{
3153 struct list_head
*p
;
3154 struct iwl_ibss_seq
*entry
= NULL
;
3155 u8
*mac
= header
->addr2
;
3156 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
3158 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
3160 list_entry(p
, struct iwl_ibss_seq
, list
);
3161 if (!compare_ether_addr(entry
->mac
, mac
))
3164 if (p
== &priv
->ibss_mac_hash
[index
]) {
3165 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
3168 ("Cannot malloc new mac entry\n");
3171 memcpy(entry
->mac
, mac
, ETH_ALEN
);
3172 entry
->seq_num
= seq
;
3173 entry
->frag_num
= frag
;
3174 entry
->packet_time
= jiffies
;
3175 list_add(&entry
->list
,
3176 &priv
->ibss_mac_hash
[index
]);
3179 last_seq
= &entry
->seq_num
;
3180 last_frag
= &entry
->frag_num
;
3181 last_time
= &entry
->packet_time
;
3184 case IEEE80211_IF_TYPE_STA
:
3185 last_seq
= &priv
->last_seq_num
;
3186 last_frag
= &priv
->last_frag_num
;
3187 last_time
= &priv
->last_packet_time
;
3192 if ((*last_seq
== seq
) &&
3193 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
3194 if (*last_frag
== frag
)
3196 if (*last_frag
+ 1 != frag
)
3197 /* out-of-order fragment */
3203 *last_time
= jiffies
;
3210 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3212 #include "iwl-spectrum.h"
3214 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3215 #define BEACON_TIME_MASK_HIGH 0xFF000000
3216 #define TIME_UNIT 1024
3219 * extended beacon time format
3220 * time in usec will be changed into a 32-bit value in 8:24 format
3221 * the high 1 byte is the beacon counts
3222 * the lower 3 bytes is the time in usec within one beacon interval
3225 static u32
iwl_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
3229 u32 interval
= beacon_interval
* 1024;
3231 if (!interval
|| !usec
)
3234 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
3235 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
3237 return (quot
<< 24) + rem
;
3240 /* base is usually what we get from ucode with each received frame,
3241 * the same as HW timer counter counting down
3244 static __le32
iwl_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
3246 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
3247 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
3248 u32 interval
= beacon_interval
* TIME_UNIT
;
3249 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
3250 (addon
& BEACON_TIME_MASK_HIGH
);
3252 if (base_low
> addon_low
)
3253 res
+= base_low
- addon_low
;
3254 else if (base_low
< addon_low
) {
3255 res
+= interval
+ base_low
- addon_low
;
3260 return cpu_to_le32(res
);
3263 static int iwl_get_measurement(struct iwl_priv
*priv
,
3264 struct ieee80211_measurement_params
*params
,
3267 struct iwl_spectrum_cmd spectrum
;
3268 struct iwl_rx_packet
*res
;
3269 struct iwl_host_cmd cmd
= {
3270 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
3271 .data
= (void *)&spectrum
,
3272 .meta
.flags
= CMD_WANT_SKB
,
3274 u32 add_time
= le64_to_cpu(params
->start_time
);
3276 int spectrum_resp_status
;
3277 int duration
= le16_to_cpu(params
->duration
);
3279 if (iwl_is_associated(priv
))
3281 iwl_usecs_to_beacons(
3282 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
3283 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3285 memset(&spectrum
, 0, sizeof(spectrum
));
3287 spectrum
.channel_count
= cpu_to_le16(1);
3289 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
3290 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
3291 cmd
.len
= sizeof(spectrum
);
3292 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
3294 if (iwl_is_associated(priv
))
3295 spectrum
.start_time
=
3296 iwl_add_beacon_time(priv
->last_beacon_time
,
3298 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
3300 spectrum
.start_time
= 0;
3302 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
3303 spectrum
.channels
[0].channel
= params
->channel
;
3304 spectrum
.channels
[0].type
= type
;
3305 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
3306 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
3307 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
3309 rc
= iwl_send_cmd_sync(priv
, &cmd
);
3313 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
3314 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
3315 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3319 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
3320 switch (spectrum_resp_status
) {
3321 case 0: /* Command will be handled */
3322 if (res
->u
.spectrum
.id
!= 0xff) {
3324 ("Replaced existing measurement: %d\n",
3325 res
->u
.spectrum
.id
);
3326 priv
->measurement_status
&= ~MEASUREMENT_READY
;
3328 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
3332 case 1: /* Command will not be handled */
3337 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
3343 static void iwl_txstatus_to_ieee(struct iwl_priv
*priv
,
3344 struct iwl_tx_info
*tx_sta
)
3347 tx_sta
->status
.ack_signal
= 0;
3348 tx_sta
->status
.excessive_retries
= 0;
3349 tx_sta
->status
.queue_length
= 0;
3350 tx_sta
->status
.queue_number
= 0;
3353 ieee80211_tx_status_irqsafe(priv
->hw
,
3354 tx_sta
->skb
[0], &(tx_sta
->status
));
3356 ieee80211_tx_status(priv
->hw
,
3357 tx_sta
->skb
[0], &(tx_sta
->status
));
3359 tx_sta
->skb
[0] = NULL
;
3363 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3365 * When FW advances 'R' index, all entries between old and
3366 * new 'R' index need to be reclaimed. As result, some free space
3367 * forms. If there is enough free space (> low mark), wake Tx queue.
3369 int iwl_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
3371 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3372 struct iwl_queue
*q
= &txq
->q
;
3375 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
3376 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3377 "is out of range [0-%d] %d %d.\n", txq_id
,
3378 index
, q
->n_bd
, q
->first_empty
, q
->last_used
);
3382 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
3383 q
->last_used
!= index
;
3384 q
->last_used
= iwl_queue_inc_wrap(q
->last_used
, q
->n_bd
)) {
3385 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
3386 iwl_txstatus_to_ieee(priv
,
3387 &(txq
->txb
[txq
->q
.last_used
]));
3388 iwl_hw_txq_free_tfd(priv
, txq
);
3389 } else if (nfreed
> 1) {
3390 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
3391 q
->first_empty
, q
->last_used
);
3392 queue_work(priv
->workqueue
, &priv
->restart
);
3397 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
3398 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
3399 priv
->mac80211_registered
)
3400 ieee80211_wake_queue(priv
->hw
, txq_id
);
3406 static int iwl_is_tx_success(u32 status
)
3408 return (status
& 0xFF) == 0x1;
3411 /******************************************************************************
3413 * Generic RX handler implementations
3415 ******************************************************************************/
3416 static void iwl_rx_reply_tx(struct iwl_priv
*priv
,
3417 struct iwl_rx_mem_buffer
*rxb
)
3419 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3420 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3421 int txq_id
= SEQ_TO_QUEUE(sequence
);
3422 int index
= SEQ_TO_INDEX(sequence
);
3423 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
3424 struct ieee80211_tx_status
*tx_status
;
3425 struct iwl_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3426 u32 status
= le32_to_cpu(tx_resp
->status
);
3428 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3429 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3430 "is out of range [0-%d] %d %d\n", txq_id
,
3431 index
, txq
->q
.n_bd
, txq
->q
.first_empty
,
3436 tx_status
= &(txq
->txb
[txq
->q
.last_used
].status
);
3438 tx_status
->retry_count
= tx_resp
->failure_frame
;
3439 tx_status
->queue_number
= status
;
3440 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3441 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3444 iwl_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3446 tx_status
->control
.tx_rate
= iwl_rate_index_from_plcp(tx_resp
->rate
);
3448 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3449 txq_id
, iwl_get_tx_fail_reason(status
), status
,
3450 tx_resp
->rate
, tx_resp
->failure_frame
);
3452 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3454 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3456 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3457 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3461 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
3462 struct iwl_rx_mem_buffer
*rxb
)
3464 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3465 struct iwl_alive_resp
*palive
;
3466 struct delayed_work
*pwork
;
3468 palive
= &pkt
->u
.alive_frame
;
3470 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3472 palive
->is_valid
, palive
->ver_type
,
3473 palive
->ver_subtype
);
3475 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3476 IWL_DEBUG_INFO("Initialization Alive received.\n");
3477 memcpy(&priv
->card_alive_init
,
3478 &pkt
->u
.alive_frame
,
3479 sizeof(struct iwl_init_alive_resp
));
3480 pwork
= &priv
->init_alive_start
;
3482 IWL_DEBUG_INFO("Runtime Alive received.\n");
3483 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3484 sizeof(struct iwl_alive_resp
));
3485 pwork
= &priv
->alive_start
;
3486 iwl_disable_events(priv
);
3489 /* We delay the ALIVE response by 5ms to
3490 * give the HW RF Kill time to activate... */
3491 if (palive
->is_valid
== UCODE_VALID_OK
)
3492 queue_delayed_work(priv
->workqueue
, pwork
,
3493 msecs_to_jiffies(5));
3495 IWL_WARNING("uCode did not respond OK.\n");
3498 static void iwl_rx_reply_add_sta(struct iwl_priv
*priv
,
3499 struct iwl_rx_mem_buffer
*rxb
)
3501 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3503 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3507 static void iwl_rx_reply_error(struct iwl_priv
*priv
,
3508 struct iwl_rx_mem_buffer
*rxb
)
3510 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3512 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3513 "seq 0x%04X ser 0x%08X\n",
3514 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3515 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3516 pkt
->u
.err_resp
.cmd_id
,
3517 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3518 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3521 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3523 static void iwl_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3525 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3526 struct iwl_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3527 struct iwl_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3528 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3529 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3530 rxon
->channel
= csa
->channel
;
3531 priv
->staging_rxon
.channel
= csa
->channel
;
3534 static void iwl_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3535 struct iwl_rx_mem_buffer
*rxb
)
3537 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3538 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3539 struct iwl_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3541 if (!report
->state
) {
3542 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3543 "Spectrum Measure Notification: Start\n");
3547 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3548 priv
->measurement_status
|= MEASUREMENT_READY
;
3552 static void iwl_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3553 struct iwl_rx_mem_buffer
*rxb
)
3555 #ifdef CONFIG_IWLWIFI_DEBUG
3556 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3557 struct iwl_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3558 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3559 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3563 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3564 struct iwl_rx_mem_buffer
*rxb
)
3566 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3567 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3568 "notification for %s:\n",
3569 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3570 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3573 static void iwl_bg_beacon_update(struct work_struct
*work
)
3575 struct iwl_priv
*priv
=
3576 container_of(work
, struct iwl_priv
, beacon_update
);
3577 struct sk_buff
*beacon
;
3579 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3580 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->interface_id
, NULL
);
3583 IWL_ERROR("update beacon failed\n");
3587 mutex_lock(&priv
->mutex
);
3588 /* new beacon skb is allocated every time; dispose previous.*/
3589 if (priv
->ibss_beacon
)
3590 dev_kfree_skb(priv
->ibss_beacon
);
3592 priv
->ibss_beacon
= beacon
;
3593 mutex_unlock(&priv
->mutex
);
3595 iwl_send_beacon_cmd(priv
);
3598 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
3599 struct iwl_rx_mem_buffer
*rxb
)
3601 #ifdef CONFIG_IWLWIFI_DEBUG
3602 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3603 struct iwl_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3604 u8 rate
= beacon
->beacon_notify_hdr
.rate
;
3606 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3607 "tsf %d %d rate %d\n",
3608 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3609 beacon
->beacon_notify_hdr
.failure_frame
,
3610 le32_to_cpu(beacon
->ibss_mgr_status
),
3611 le32_to_cpu(beacon
->high_tsf
),
3612 le32_to_cpu(beacon
->low_tsf
), rate
);
3615 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3616 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3617 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3620 /* Service response to REPLY_SCAN_CMD (0x80) */
3621 static void iwl_rx_reply_scan(struct iwl_priv
*priv
,
3622 struct iwl_rx_mem_buffer
*rxb
)
3624 #ifdef CONFIG_IWLWIFI_DEBUG
3625 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3626 struct iwl_scanreq_notification
*notif
=
3627 (struct iwl_scanreq_notification
*)pkt
->u
.raw
;
3629 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3633 /* Service SCAN_START_NOTIFICATION (0x82) */
3634 static void iwl_rx_scan_start_notif(struct iwl_priv
*priv
,
3635 struct iwl_rx_mem_buffer
*rxb
)
3637 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3638 struct iwl_scanstart_notification
*notif
=
3639 (struct iwl_scanstart_notification
*)pkt
->u
.raw
;
3640 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3641 IWL_DEBUG_SCAN("Scan start: "
3643 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3645 notif
->band
? "bg" : "a",
3647 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3650 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3651 static void iwl_rx_scan_results_notif(struct iwl_priv
*priv
,
3652 struct iwl_rx_mem_buffer
*rxb
)
3654 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3655 struct iwl_scanresults_notification
*notif
=
3656 (struct iwl_scanresults_notification
*)pkt
->u
.raw
;
3658 IWL_DEBUG_SCAN("Scan ch.res: "
3660 "(TSF: 0x%08X:%08X) - %d "
3661 "elapsed=%lu usec (%dms since last)\n",
3663 notif
->band
? "bg" : "a",
3664 le32_to_cpu(notif
->tsf_high
),
3665 le32_to_cpu(notif
->tsf_low
),
3666 le32_to_cpu(notif
->statistics
[0]),
3667 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3668 jiffies_to_msecs(elapsed_jiffies
3669 (priv
->last_scan_jiffies
, jiffies
)));
3671 priv
->last_scan_jiffies
= jiffies
;
3674 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3675 static void iwl_rx_scan_complete_notif(struct iwl_priv
*priv
,
3676 struct iwl_rx_mem_buffer
*rxb
)
3678 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3679 struct iwl_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3681 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3682 scan_notif
->scanned_channels
,
3683 scan_notif
->tsf_low
,
3684 scan_notif
->tsf_high
, scan_notif
->status
);
3686 /* The HW is no longer scanning */
3687 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3689 /* The scan completion notification came in, so kill that timer... */
3690 cancel_delayed_work(&priv
->scan_check
);
3692 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3693 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3694 jiffies_to_msecs(elapsed_jiffies
3695 (priv
->scan_pass_start
, jiffies
)));
3697 /* Remove this scanned band from the list
3698 * of pending bands to scan */
3701 /* If a request to abort was given, or the scan did not succeed
3702 * then we reset the scan state machine and terminate,
3703 * re-queuing another scan if one has been requested */
3704 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3705 IWL_DEBUG_INFO("Aborted scan completed.\n");
3706 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3708 /* If there are more bands on this scan pass reschedule */
3709 if (priv
->scan_bands
> 0)
3713 priv
->last_scan_jiffies
= jiffies
;
3714 IWL_DEBUG_INFO("Setting scan to off\n");
3716 clear_bit(STATUS_SCANNING
, &priv
->status
);
3718 IWL_DEBUG_INFO("Scan took %dms\n",
3719 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
3721 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3726 priv
->scan_pass_start
= jiffies
;
3727 queue_work(priv
->workqueue
, &priv
->request_scan
);
3730 /* Handle notification from uCode that card's power state is changing
3731 * due to software, hardware, or critical temperature RFKILL */
3732 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
3733 struct iwl_rx_mem_buffer
*rxb
)
3735 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3736 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
3737 unsigned long status
= priv
->status
;
3739 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3740 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
3741 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
3743 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3744 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
3746 if (flags
& HW_CARD_DISABLED
)
3747 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3749 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3752 if (flags
& SW_CARD_DISABLED
)
3753 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3755 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3757 iwl_scan_cancel(priv
);
3759 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
3760 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
3761 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
3762 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
3763 queue_work(priv
->workqueue
, &priv
->rf_kill
);
3765 wake_up_interruptible(&priv
->wait_command_queue
);
3769 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
3771 * Setup the RX handlers for each of the reply types sent from the uCode
3774 * This function chains into the hardware specific files for them to setup
3775 * any hardware specific handlers as well.
3777 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
3779 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
3780 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl_rx_reply_add_sta
;
3781 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
3782 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
3783 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
3784 iwl_rx_spectrum_measure_notif
;
3785 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
3786 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
3787 iwl_rx_pm_debug_statistics_notif
;
3788 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
3790 /* NOTE: iwl_rx_statistics is different based on whether
3791 * the build is for the 3945 or the 4965. See the
3792 * corresponding implementation in iwl-XXXX.c
3794 * The same handler is used for both the REPLY to a
3795 * discrete statistics request from the host as well as
3796 * for the periodic statistics notification from the uCode
3798 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_hw_rx_statistics
;
3799 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_hw_rx_statistics
;
3801 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl_rx_reply_scan
;
3802 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl_rx_scan_start_notif
;
3803 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
3804 iwl_rx_scan_results_notif
;
3805 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
3806 iwl_rx_scan_complete_notif
;
3807 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
3808 priv
->rx_handlers
[REPLY_TX
] = iwl_rx_reply_tx
;
3810 /* Setup hardware specific Rx handlers */
3811 iwl_hw_rx_handler_setup(priv
);
3815 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3816 * @rxb: Rx buffer to reclaim
3818 * If an Rx buffer has an async callback associated with it the callback
3819 * will be executed. The attached skb (if present) will only be freed
3820 * if the callback returns 1
3822 static void iwl_tx_cmd_complete(struct iwl_priv
*priv
,
3823 struct iwl_rx_mem_buffer
*rxb
)
3825 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
3826 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3827 int txq_id
= SEQ_TO_QUEUE(sequence
);
3828 int index
= SEQ_TO_INDEX(sequence
);
3829 int huge
= sequence
& SEQ_HUGE_FRAME
;
3831 struct iwl_cmd
*cmd
;
3833 /* If a Tx command is being handled and it isn't in the actual
3834 * command queue then there a command routing bug has been introduced
3835 * in the queue management code. */
3836 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
3837 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3838 txq_id
, pkt
->hdr
.cmd
);
3839 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
3841 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
3842 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
3844 /* Input error checking is done when commands are added to queue. */
3845 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
3846 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
3848 } else if (cmd
->meta
.u
.callback
&&
3849 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
3852 iwl_tx_queue_reclaim(priv
, txq_id
, index
);
3854 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
3855 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
3856 wake_up_interruptible(&priv
->wait_command_queue
);
3860 /************************** RX-FUNCTIONS ****************************/
3862 * Rx theory of operation
3864 * The host allocates 32 DMA target addresses and passes the host address
3865 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3869 * The host/firmware share two index registers for managing the Rx buffers.
3871 * The READ index maps to the first position that the firmware may be writing
3872 * to -- the driver can read up to (but not including) this position and get
3874 * The READ index is managed by the firmware once the card is enabled.
3876 * The WRITE index maps to the last position the driver has read from -- the
3877 * position preceding WRITE is the last slot the firmware can place a packet.
3879 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3882 * During initialization the host sets up the READ queue position to the first
3883 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3885 * When the firmware places a packet in a buffer it will advance the READ index
3886 * and fire the RX interrupt. The driver can then query the READ index and
3887 * process as many packets as possible, moving the WRITE index forward as it
3888 * resets the Rx queue buffers with new memory.
3890 * The management in the driver is as follows:
3891 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3892 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3893 * to replensish the iwl->rxq->rx_free.
3894 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
3895 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3896 * 'processed' and 'read' driver indexes as well)
3897 * + A received packet is processed and handed to the kernel network stack,
3898 * detached from the iwl->rxq. The driver 'processed' index is updated.
3899 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3900 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3901 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3902 * were enough free buffers and RX_STALLED is set it is cleared.
3907 * iwl_rx_queue_alloc() Allocates rx_free
3908 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
3909 * iwl_rx_queue_restock
3910 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
3911 * queue, updates firmware pointers, and updates
3912 * the WRITE index. If insufficient rx_free buffers
3913 * are available, schedules iwl_rx_replenish
3915 * -- enable interrupts --
3916 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
3917 * READ INDEX, detaching the SKB from the pool.
3918 * Moves the packet buffer from queue to rx_used.
3919 * Calls iwl_rx_queue_restock to refill any empty
3926 * iwl_rx_queue_space - Return number of free slots available in queue.
3928 static int iwl_rx_queue_space(const struct iwl_rx_queue
*q
)
3930 int s
= q
->read
- q
->write
;
3933 /* keep some buffer to not confuse full and empty queue */
3941 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3943 * NOTE: This function has 3945 and 4965 specific code sections
3944 * but is declared in base due to the majority of the
3945 * implementation being the same (only a numeric constant is
3949 int iwl_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl_rx_queue
*q
)
3953 unsigned long flags
;
3955 spin_lock_irqsave(&q
->lock
, flags
);
3957 if (q
->need_update
== 0)
3960 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
3961 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3963 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
3964 iwl_set_bit(priv
, CSR_GP_CNTRL
,
3965 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
3969 rc
= iwl_grab_restricted_access(priv
);
3973 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_WPTR
,
3975 iwl_release_restricted_access(priv
);
3977 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
3983 spin_unlock_irqrestore(&q
->lock
, flags
);
3988 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
3990 * NOTE: This function has 3945 and 4965 specific code paths in it.
3992 static inline __le32
iwl_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
3993 dma_addr_t dma_addr
)
3995 return cpu_to_le32((u32
)dma_addr
);
3999 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4001 * If there are slots in the RX queue that need to be restocked,
4002 * and we have free pre-allocated buffers, fill the ranks as much
4003 * as we can pulling from rx_free.
4005 * This moves the 'write' index forward to catch up with 'processed', and
4006 * also updates the memory address in the firmware to reference the new
4009 int iwl_rx_queue_restock(struct iwl_priv
*priv
)
4011 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4012 struct list_head
*element
;
4013 struct iwl_rx_mem_buffer
*rxb
;
4014 unsigned long flags
;
4017 spin_lock_irqsave(&rxq
->lock
, flags
);
4018 write
= rxq
->write
& ~0x7;
4019 while ((iwl_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
4020 element
= rxq
->rx_free
.next
;
4021 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4023 rxq
->bd
[rxq
->write
] = iwl_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
4024 rxq
->queue
[rxq
->write
] = rxb
;
4025 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
4028 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4029 /* If the pre-allocated buffer pool is dropping low, schedule to
4031 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
4032 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
4035 /* If we've added more space for the firmware to place data, tell it */
4036 if ((write
!= (rxq
->write
& ~0x7))
4037 || (abs(rxq
->write
- rxq
->read
) > 7)) {
4038 spin_lock_irqsave(&rxq
->lock
, flags
);
4039 rxq
->need_update
= 1;
4040 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4041 rc
= iwl_rx_queue_update_write_ptr(priv
, rxq
);
4050 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4052 * When moving to rx_free an SKB is allocated for the slot.
4054 * Also restock the Rx queue via iwl_rx_queue_restock.
4055 * This is called as a scheduled work item (except for during intialization)
4057 void iwl_rx_replenish(void *data
)
4059 struct iwl_priv
*priv
= data
;
4060 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4061 struct list_head
*element
;
4062 struct iwl_rx_mem_buffer
*rxb
;
4063 unsigned long flags
;
4064 spin_lock_irqsave(&rxq
->lock
, flags
);
4065 while (!list_empty(&rxq
->rx_used
)) {
4066 element
= rxq
->rx_used
.next
;
4067 rxb
= list_entry(element
, struct iwl_rx_mem_buffer
, list
);
4069 alloc_skb(IWL_RX_BUF_SIZE
, __GFP_NOWARN
| GFP_ATOMIC
);
4071 if (net_ratelimit())
4072 printk(KERN_CRIT DRV_NAME
4073 ": Can not allocate SKB buffers\n");
4074 /* We don't reschedule replenish work here -- we will
4075 * call the restock method and if it still needs
4076 * more buffers it will schedule replenish */
4079 priv
->alloc_rxb_skb
++;
4082 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
4083 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4084 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
4087 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4089 spin_lock_irqsave(&priv
->lock
, flags
);
4090 iwl_rx_queue_restock(priv
);
4091 spin_unlock_irqrestore(&priv
->lock
, flags
);
4094 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4095 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4096 * This free routine walks the list of POOL entries and if SKB is set to
4097 * non NULL it is unmapped and freed
4099 void iwl_rx_queue_free(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4102 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
4103 if (rxq
->pool
[i
].skb
!= NULL
) {
4104 pci_unmap_single(priv
->pci_dev
,
4105 rxq
->pool
[i
].dma_addr
,
4106 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4107 dev_kfree_skb(rxq
->pool
[i
].skb
);
4111 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
4116 int iwl_rx_queue_alloc(struct iwl_priv
*priv
)
4118 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4119 struct pci_dev
*dev
= priv
->pci_dev
;
4122 spin_lock_init(&rxq
->lock
);
4123 INIT_LIST_HEAD(&rxq
->rx_free
);
4124 INIT_LIST_HEAD(&rxq
->rx_used
);
4125 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
4128 /* Fill the rx_used queue with _all_ of the Rx buffers */
4129 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
4130 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4131 /* Set us so that we have processed and used all buffers, but have
4132 * not restocked the Rx queue with fresh buffers */
4133 rxq
->read
= rxq
->write
= 0;
4134 rxq
->free_count
= 0;
4135 rxq
->need_update
= 0;
4139 void iwl_rx_queue_reset(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
4141 unsigned long flags
;
4143 spin_lock_irqsave(&rxq
->lock
, flags
);
4144 INIT_LIST_HEAD(&rxq
->rx_free
);
4145 INIT_LIST_HEAD(&rxq
->rx_used
);
4146 /* Fill the rx_used queue with _all_ of the Rx buffers */
4147 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
4148 /* In the reset function, these buffers may have been allocated
4149 * to an SKB, so we need to unmap and free potential storage */
4150 if (rxq
->pool
[i
].skb
!= NULL
) {
4151 pci_unmap_single(priv
->pci_dev
,
4152 rxq
->pool
[i
].dma_addr
,
4153 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4154 priv
->alloc_rxb_skb
--;
4155 dev_kfree_skb(rxq
->pool
[i
].skb
);
4156 rxq
->pool
[i
].skb
= NULL
;
4158 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
4161 /* Set us so that we have processed and used all buffers, but have
4162 * not restocked the Rx queue with fresh buffers */
4163 rxq
->read
= rxq
->write
= 0;
4164 rxq
->free_count
= 0;
4165 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4168 /* Convert linear signal-to-noise ratio into dB */
4169 static u8 ratio2dB
[100] = {
4170 /* 0 1 2 3 4 5 6 7 8 9 */
4171 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4172 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4173 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4174 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4175 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4176 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4177 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4178 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4179 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4180 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4183 /* Calculates a relative dB value from a ratio of linear
4184 * (i.e. not dB) signal levels.
4185 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4186 int iwl_calc_db_from_ratio(int sig_ratio
)
4188 /* Anything above 1000:1 just report as 60 dB */
4189 if (sig_ratio
> 1000)
4192 /* Above 100:1, divide by 10 and use table,
4193 * add 20 dB to make up for divide by 10 */
4194 if (sig_ratio
> 100)
4195 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4197 /* We shouldn't see this */
4201 /* Use table for ratios 1:1 - 99:1 */
4202 return (int)ratio2dB
[sig_ratio
];
4205 #define PERFECT_RSSI (-20) /* dBm */
4206 #define WORST_RSSI (-95) /* dBm */
4207 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4209 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4210 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4211 * about formulas used below. */
4212 int iwl_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4215 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4217 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4218 * as indicator; formula is (signal dbm - noise dbm).
4219 * SNR at or above 40 is a great signal (100%).
4220 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4221 * Weakest usable signal is usually 10 - 15 dB SNR. */
4223 if (rssi_dbm
- noise_dbm
>= 40)
4225 else if (rssi_dbm
< noise_dbm
)
4227 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4229 /* Else use just the signal level.
4230 * This formula is a least squares fit of data points collected and
4231 * compared with a reference system that had a percentage (%) display
4232 * for signal quality. */
4234 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4235 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4236 (RSSI_RANGE
* RSSI_RANGE
);
4240 else if (sig_qual
< 1)
4247 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4249 * Uses the priv->rx_handlers callback function array to invoke
4250 * the appropriate handlers, including command responses,
4251 * frame-received notifications, and other notifications.
4253 static void iwl_rx_handle(struct iwl_priv
*priv
)
4255 struct iwl_rx_mem_buffer
*rxb
;
4256 struct iwl_rx_packet
*pkt
;
4257 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
4260 unsigned long flags
;
4262 r
= iwl_hw_get_rx_read(priv
);
4265 /* Rx interrupt, but nothing sent from uCode */
4267 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4270 rxb
= rxq
->queue
[i
];
4272 /* If an RXB doesn't have a queue slot associated with it
4273 * then a bug has been introduced in the queue refilling
4274 * routines -- catch it here */
4275 BUG_ON(rxb
== NULL
);
4277 rxq
->queue
[i
] = NULL
;
4279 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4281 PCI_DMA_FROMDEVICE
);
4282 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
4284 /* Reclaim a command buffer only if this packet is a response
4285 * to a (driver-originated) command.
4286 * If the packet (e.g. Rx frame) originated from uCode,
4287 * there is no command buffer to reclaim.
4288 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4289 * but apparently a few don't get set; catch them here. */
4290 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4291 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4292 (pkt
->hdr
.cmd
!= REPLY_TX
);
4294 /* Based on type of command response or notification,
4295 * handle those that need handling via function in
4296 * rx_handlers table. See iwl_setup_rx_handlers() */
4297 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4298 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4299 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4300 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4301 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4303 /* No handling needed */
4304 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4305 "r %d i %d No handler needed for %s, 0x%02x\n",
4306 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4311 /* Invoke any callbacks, transfer the skb to caller,
4312 * and fire off the (possibly) blocking iwl_send_cmd()
4313 * as we reclaim the driver command queue */
4314 if (rxb
&& rxb
->skb
)
4315 iwl_tx_cmd_complete(priv
, rxb
);
4317 IWL_WARNING("Claim null rxb?\n");
4320 /* For now we just don't re-use anything. We can tweak this
4321 * later to try and re-use notification packets and SKBs that
4322 * fail to Rx correctly */
4323 if (rxb
->skb
!= NULL
) {
4324 priv
->alloc_rxb_skb
--;
4325 dev_kfree_skb_any(rxb
->skb
);
4329 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4330 IWL_RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
4331 spin_lock_irqsave(&rxq
->lock
, flags
);
4332 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4333 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4334 i
= (i
+ 1) & RX_QUEUE_MASK
;
4337 /* Backtrack one entry */
4339 iwl_rx_queue_restock(priv
);
4342 int iwl_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4343 struct iwl_tx_queue
*txq
)
4347 int txq_id
= txq
->q
.id
;
4349 if (txq
->need_update
== 0)
4352 /* if we're trying to save power */
4353 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4354 /* wake up nic if it's powered down ...
4355 * uCode will wake up, and interrupt us again, so next
4356 * time we'll skip this part. */
4357 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4359 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4360 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4361 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4362 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4366 /* restore this queue's parameters in nic hardware. */
4367 rc
= iwl_grab_restricted_access(priv
);
4370 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
4371 txq
->q
.first_empty
| (txq_id
<< 8));
4372 iwl_release_restricted_access(priv
);
4374 /* else not in power-save mode, uCode will never sleep when we're
4375 * trying to tx (during RFKILL, we're not trying to tx). */
4377 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4378 txq
->q
.first_empty
| (txq_id
<< 8));
4380 txq
->need_update
= 0;
4385 #ifdef CONFIG_IWLWIFI_DEBUG
4386 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd
*rxon
)
4388 DECLARE_MAC_BUF(mac
);
4390 IWL_DEBUG_RADIO("RX CONFIG:\n");
4391 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4392 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4393 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4394 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4395 le32_to_cpu(rxon
->filter_flags
));
4396 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4397 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4398 rxon
->ofdm_basic_rates
);
4399 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4400 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4401 print_mac(mac
, rxon
->node_addr
));
4402 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4403 print_mac(mac
, rxon
->bssid_addr
));
4404 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4408 static void iwl_enable_interrupts(struct iwl_priv
*priv
)
4410 IWL_DEBUG_ISR("Enabling interrupts\n");
4411 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4412 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4415 static inline void iwl_disable_interrupts(struct iwl_priv
*priv
)
4417 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4419 /* disable interrupts from uCode/NIC to host */
4420 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4422 /* acknowledge/clear/reset any interrupts still pending
4423 * from uCode or flow handler (Rx/Tx DMA) */
4424 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4425 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4426 IWL_DEBUG_ISR("Disabled interrupts\n");
4429 static const char *desc_lookup(int i
)
4437 return "BAD_CHECKSUM";
4439 return "NMI_INTERRUPT";
4443 return "FATAL_ERROR";
4449 #define ERROR_START_OFFSET (1 * sizeof(u32))
4450 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4452 static void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
4455 u32 desc
, time
, count
, base
, data1
;
4456 u32 blink1
, blink2
, ilink1
, ilink2
;
4459 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4461 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4462 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4466 rc
= iwl_grab_restricted_access(priv
);
4468 IWL_WARNING("Can not read from adapter at this time.\n");
4472 count
= iwl_read_restricted_mem(priv
, base
);
4474 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4475 IWL_ERROR("Start IWL Error Log Dump:\n");
4476 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4477 priv
->status
, priv
->config
, count
);
4480 IWL_ERROR("Desc Time asrtPC blink2 "
4481 "ilink1 nmiPC Line\n");
4482 for (i
= ERROR_START_OFFSET
;
4483 i
< (count
* ERROR_ELEM_SIZE
) + ERROR_START_OFFSET
;
4484 i
+= ERROR_ELEM_SIZE
) {
4485 desc
= iwl_read_restricted_mem(priv
, base
+ i
);
4487 iwl_read_restricted_mem(priv
, base
+ i
+ 1 * sizeof(u32
));
4489 iwl_read_restricted_mem(priv
, base
+ i
+ 2 * sizeof(u32
));
4491 iwl_read_restricted_mem(priv
, base
+ i
+ 3 * sizeof(u32
));
4493 iwl_read_restricted_mem(priv
, base
+ i
+ 4 * sizeof(u32
));
4495 iwl_read_restricted_mem(priv
, base
+ i
+ 5 * sizeof(u32
));
4497 iwl_read_restricted_mem(priv
, base
+ i
+ 6 * sizeof(u32
));
4500 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4501 desc_lookup(desc
), desc
, time
, blink1
, blink2
,
4502 ilink1
, ilink2
, data1
);
4505 iwl_release_restricted_access(priv
);
4509 #define EVENT_START_OFFSET (4 * sizeof(u32))
4512 * iwl_print_event_log - Dump error event log to syslog
4514 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4516 static void iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4517 u32 num_events
, u32 mode
)
4520 u32 base
; /* SRAM byte address of event log header */
4521 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4522 u32 ptr
; /* SRAM byte address of log data */
4523 u32 ev
, time
, data
; /* event log data */
4525 if (num_events
== 0)
4528 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4531 event_size
= 2 * sizeof(u32
);
4533 event_size
= 3 * sizeof(u32
);
4535 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4537 /* "time" is actually "data" for mode 0 (no timestamp).
4538 * place event id # at far right for easier visual parsing. */
4539 for (i
= 0; i
< num_events
; i
++) {
4540 ev
= iwl_read_restricted_mem(priv
, ptr
);
4542 time
= iwl_read_restricted_mem(priv
, ptr
);
4545 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4547 data
= iwl_read_restricted_mem(priv
, ptr
);
4549 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4554 static void iwl_dump_nic_event_log(struct iwl_priv
*priv
)
4557 u32 base
; /* SRAM byte address of event log header */
4558 u32 capacity
; /* event log capacity in # entries */
4559 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4560 u32 num_wraps
; /* # times uCode wrapped to top of log */
4561 u32 next_entry
; /* index of next entry to be written by uCode */
4562 u32 size
; /* # entries that we'll print */
4564 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4565 if (!iwl_hw_valid_rtc_data_addr(base
)) {
4566 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4570 rc
= iwl_grab_restricted_access(priv
);
4572 IWL_WARNING("Can not read from adapter at this time.\n");
4576 /* event log header */
4577 capacity
= iwl_read_restricted_mem(priv
, base
);
4578 mode
= iwl_read_restricted_mem(priv
, base
+ (1 * sizeof(u32
)));
4579 num_wraps
= iwl_read_restricted_mem(priv
, base
+ (2 * sizeof(u32
)));
4580 next_entry
= iwl_read_restricted_mem(priv
, base
+ (3 * sizeof(u32
)));
4582 size
= num_wraps
? capacity
: next_entry
;
4584 /* bail out if nothing in log */
4586 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4587 iwl_release_restricted_access(priv
);
4591 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4594 /* if uCode has wrapped back to top of log, start at the oldest entry,
4595 * i.e the next one that uCode would fill. */
4597 iwl_print_event_log(priv
, next_entry
,
4598 capacity
- next_entry
, mode
);
4600 /* (then/else) start at top of log */
4601 iwl_print_event_log(priv
, 0, next_entry
, mode
);
4603 iwl_release_restricted_access(priv
);
4607 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4609 static void iwl_irq_handle_error(struct iwl_priv
*priv
)
4611 /* Set the FW error flag -- cleared on iwl_down */
4612 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4614 /* Cancel currently queued command. */
4615 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4617 #ifdef CONFIG_IWLWIFI_DEBUG
4618 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4619 iwl_dump_nic_error_log(priv
);
4620 iwl_dump_nic_event_log(priv
);
4621 iwl_print_rx_config_cmd(&priv
->staging_rxon
);
4625 wake_up_interruptible(&priv
->wait_command_queue
);
4627 /* Keep the restart process from trying to send host
4628 * commands by clearing the INIT status bit */
4629 clear_bit(STATUS_READY
, &priv
->status
);
4631 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4632 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4633 "Restarting adapter due to uCode error.\n");
4635 if (iwl_is_associated(priv
)) {
4636 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4637 sizeof(priv
->recovery_rxon
));
4638 priv
->error_recovering
= 1;
4640 queue_work(priv
->workqueue
, &priv
->restart
);
4644 static void iwl_error_recovery(struct iwl_priv
*priv
)
4646 unsigned long flags
;
4648 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4649 sizeof(priv
->staging_rxon
));
4650 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4651 iwl_commit_rxon(priv
);
4653 iwl_add_station(priv
, priv
->bssid
, 1, 0);
4655 spin_lock_irqsave(&priv
->lock
, flags
);
4656 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4657 priv
->error_recovering
= 0;
4658 spin_unlock_irqrestore(&priv
->lock
, flags
);
4661 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
4663 u32 inta
, handled
= 0;
4665 unsigned long flags
;
4666 #ifdef CONFIG_IWLWIFI_DEBUG
4670 spin_lock_irqsave(&priv
->lock
, flags
);
4672 /* Ack/clear/reset pending uCode interrupts.
4673 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4674 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4675 inta
= iwl_read32(priv
, CSR_INT
);
4676 iwl_write32(priv
, CSR_INT
, inta
);
4678 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4679 * Any new interrupts that happen after this, either while we're
4680 * in this tasklet, or later, will show up in next ISR/tasklet. */
4681 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4682 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4684 #ifdef CONFIG_IWLWIFI_DEBUG
4685 if (iwl_debug_level
& IWL_DL_ISR
) {
4686 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4687 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4688 inta
, inta_mask
, inta_fh
);
4692 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4693 * atomic, make sure that inta covers all the interrupts that
4694 * we've discovered, even if FH interrupt came in just after
4695 * reading CSR_INT. */
4696 if (inta_fh
& CSR_FH_INT_RX_MASK
)
4697 inta
|= CSR_INT_BIT_FH_RX
;
4698 if (inta_fh
& CSR_FH_INT_TX_MASK
)
4699 inta
|= CSR_INT_BIT_FH_TX
;
4701 /* Now service all interrupt bits discovered above. */
4702 if (inta
& CSR_INT_BIT_HW_ERR
) {
4703 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4705 /* Tell the device to stop sending interrupts */
4706 iwl_disable_interrupts(priv
);
4708 iwl_irq_handle_error(priv
);
4710 handled
|= CSR_INT_BIT_HW_ERR
;
4712 spin_unlock_irqrestore(&priv
->lock
, flags
);
4717 #ifdef CONFIG_IWLWIFI_DEBUG
4718 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4719 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4720 if (inta
& CSR_INT_BIT_MAC_CLK_ACTV
)
4721 IWL_DEBUG_ISR("Microcode started or stopped.\n");
4723 /* Alive notification via Rx interrupt will do the real work */
4724 if (inta
& CSR_INT_BIT_ALIVE
)
4725 IWL_DEBUG_ISR("Alive interrupt\n");
4728 /* Safely ignore these bits for debug checks below */
4729 inta
&= ~(CSR_INT_BIT_MAC_CLK_ACTV
| CSR_INT_BIT_ALIVE
);
4731 /* HW RF KILL switch toggled (4965 only) */
4732 if (inta
& CSR_INT_BIT_RF_KILL
) {
4734 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
4735 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
4738 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
4739 "RF_KILL bit toggled to %s.\n",
4740 hw_rf_kill
? "disable radio":"enable radio");
4742 /* Queue restart only if RF_KILL switch was set to "kill"
4743 * when we loaded driver, and is now set to "enable".
4744 * After we're Alive, RF_KILL gets handled by
4745 * iwl_rx_card_state_notif() */
4746 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
)) {
4747 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4748 queue_work(priv
->workqueue
, &priv
->restart
);
4751 handled
|= CSR_INT_BIT_RF_KILL
;
4754 /* Chip got too hot and stopped itself (4965 only) */
4755 if (inta
& CSR_INT_BIT_CT_KILL
) {
4756 IWL_ERROR("Microcode CT kill error detected.\n");
4757 handled
|= CSR_INT_BIT_CT_KILL
;
4760 /* Error detected by uCode */
4761 if (inta
& CSR_INT_BIT_SW_ERR
) {
4762 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4764 iwl_irq_handle_error(priv
);
4765 handled
|= CSR_INT_BIT_SW_ERR
;
4768 /* uCode wakes up after power-down sleep */
4769 if (inta
& CSR_INT_BIT_WAKEUP
) {
4770 IWL_DEBUG_ISR("Wakeup interrupt\n");
4771 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
4772 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
4773 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
4774 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
4775 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
4776 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
4777 iwl_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
4779 handled
|= CSR_INT_BIT_WAKEUP
;
4782 /* All uCode command responses, including Tx command responses,
4783 * Rx "responses" (frame-received notification), and other
4784 * notifications from uCode come through here*/
4785 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
4786 iwl_rx_handle(priv
);
4787 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
4790 if (inta
& CSR_INT_BIT_FH_TX
) {
4791 IWL_DEBUG_ISR("Tx interrupt\n");
4793 iwl_write32(priv
, CSR_FH_INT_STATUS
, (1 << 6));
4794 if (!iwl_grab_restricted_access(priv
)) {
4795 iwl_write_restricted(priv
,
4797 (ALM_FH_SRVC_CHNL
), 0x0);
4798 iwl_release_restricted_access(priv
);
4800 handled
|= CSR_INT_BIT_FH_TX
;
4803 if (inta
& ~handled
)
4804 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
4806 if (inta
& ~CSR_INI_SET_MASK
) {
4807 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4808 inta
& ~CSR_INI_SET_MASK
);
4809 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
4812 /* Re-enable all interrupts */
4813 iwl_enable_interrupts(priv
);
4815 #ifdef CONFIG_IWLWIFI_DEBUG
4816 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4817 inta
= iwl_read32(priv
, CSR_INT
);
4818 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
4819 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4820 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4821 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
4824 spin_unlock_irqrestore(&priv
->lock
, flags
);
4827 static irqreturn_t
iwl_isr(int irq
, void *data
)
4829 struct iwl_priv
*priv
= data
;
4830 u32 inta
, inta_mask
;
4835 spin_lock(&priv
->lock
);
4837 /* Disable (but don't clear!) interrupts here to avoid
4838 * back-to-back ISRs and sporadic interrupts from our NIC.
4839 * If we have something to service, the tasklet will re-enable ints.
4840 * If we *don't* have something, we'll re-enable before leaving here. */
4841 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4842 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4844 /* Discover which interrupts are active/pending */
4845 inta
= iwl_read32(priv
, CSR_INT
);
4846 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4848 /* Ignore interrupt if there's nothing in NIC to service.
4849 * This may be due to IRQ shared with another device,
4850 * or due to sporadic interrupts thrown from our NIC. */
4851 if (!inta
&& !inta_fh
) {
4852 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4856 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
4857 /* Hardware disappeared */
4858 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
4862 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4863 inta
, inta_mask
, inta_fh
);
4865 /* iwl_irq_tasklet() will service interrupts and re-enable them */
4866 tasklet_schedule(&priv
->irq_tasklet
);
4868 spin_unlock(&priv
->lock
);
4873 /* re-enable interrupts here since we don't have anything to service. */
4874 iwl_enable_interrupts(priv
);
4875 spin_unlock(&priv
->lock
);
4879 /************************** EEPROM BANDS ****************************
4881 * The iwl_eeprom_band definitions below provide the mapping from the
4882 * EEPROM contents to the specific channel number supported for each
4885 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
4886 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4887 * The specific geography and calibration information for that channel
4888 * is contained in the eeprom map itself.
4890 * During init, we copy the eeprom information and channel map
4891 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4893 * channel_map_24/52 provides the index in the channel_info array for a
4894 * given channel. We have to have two separate maps as there is channel
4895 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4898 * A value of 0xff stored in the channel_map indicates that the channel
4899 * is not supported by the hardware at all.
4901 * A value of 0xfe in the channel_map indicates that the channel is not
4902 * valid for Tx with the current hardware. This means that
4903 * while the system can tune and receive on a given channel, it may not
4904 * be able to associate or transmit any frames on that
4905 * channel. There is no corresponding channel information for that
4908 *********************************************************************/
4911 static const u8 iwl_eeprom_band_1
[14] = {
4912 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4916 static const u8 iwl_eeprom_band_2
[] = {
4917 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4920 static const u8 iwl_eeprom_band_3
[] = { /* 5205-5320MHz */
4921 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4924 static const u8 iwl_eeprom_band_4
[] = { /* 5500-5700MHz */
4925 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4928 static const u8 iwl_eeprom_band_5
[] = { /* 5725-5825MHz */
4929 145, 149, 153, 157, 161, 165
4932 static void iwl_init_band_reference(const struct iwl_priv
*priv
, int band
,
4933 int *eeprom_ch_count
,
4934 const struct iwl_eeprom_channel
4936 const u8
**eeprom_ch_index
)
4939 case 1: /* 2.4GHz band */
4940 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_1
);
4941 *eeprom_ch_info
= priv
->eeprom
.band_1_channels
;
4942 *eeprom_ch_index
= iwl_eeprom_band_1
;
4944 case 2: /* 5.2GHz band */
4945 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_2
);
4946 *eeprom_ch_info
= priv
->eeprom
.band_2_channels
;
4947 *eeprom_ch_index
= iwl_eeprom_band_2
;
4949 case 3: /* 5.2GHz band */
4950 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_3
);
4951 *eeprom_ch_info
= priv
->eeprom
.band_3_channels
;
4952 *eeprom_ch_index
= iwl_eeprom_band_3
;
4954 case 4: /* 5.2GHz band */
4955 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_4
);
4956 *eeprom_ch_info
= priv
->eeprom
.band_4_channels
;
4957 *eeprom_ch_index
= iwl_eeprom_band_4
;
4959 case 5: /* 5.2GHz band */
4960 *eeprom_ch_count
= ARRAY_SIZE(iwl_eeprom_band_5
);
4961 *eeprom_ch_info
= priv
->eeprom
.band_5_channels
;
4962 *eeprom_ch_index
= iwl_eeprom_band_5
;
4970 const struct iwl_channel_info
*iwl_get_channel_info(const struct iwl_priv
*priv
,
4971 int phymode
, u16 channel
)
4976 case MODE_IEEE80211A
:
4977 for (i
= 14; i
< priv
->channel_count
; i
++) {
4978 if (priv
->channel_info
[i
].channel
== channel
)
4979 return &priv
->channel_info
[i
];
4983 case MODE_IEEE80211B
:
4984 case MODE_IEEE80211G
:
4985 if (channel
>= 1 && channel
<= 14)
4986 return &priv
->channel_info
[channel
- 1];
4994 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4997 static int iwl_init_channel_map(struct iwl_priv
*priv
)
4999 int eeprom_ch_count
= 0;
5000 const u8
*eeprom_ch_index
= NULL
;
5001 const struct iwl_eeprom_channel
*eeprom_ch_info
= NULL
;
5003 struct iwl_channel_info
*ch_info
;
5005 if (priv
->channel_count
) {
5006 IWL_DEBUG_INFO("Channel map already initialized.\n");
5010 if (priv
->eeprom
.version
< 0x2f) {
5011 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5012 priv
->eeprom
.version
);
5016 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5018 priv
->channel_count
=
5019 ARRAY_SIZE(iwl_eeprom_band_1
) +
5020 ARRAY_SIZE(iwl_eeprom_band_2
) +
5021 ARRAY_SIZE(iwl_eeprom_band_3
) +
5022 ARRAY_SIZE(iwl_eeprom_band_4
) +
5023 ARRAY_SIZE(iwl_eeprom_band_5
);
5025 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv
->channel_count
);
5027 priv
->channel_info
= kzalloc(sizeof(struct iwl_channel_info
) *
5028 priv
->channel_count
, GFP_KERNEL
);
5029 if (!priv
->channel_info
) {
5030 IWL_ERROR("Could not allocate channel_info\n");
5031 priv
->channel_count
= 0;
5035 ch_info
= priv
->channel_info
;
5037 /* Loop through the 5 EEPROM bands adding them in order to the
5038 * channel map we maintain (that contains additional information than
5039 * what just in the EEPROM) */
5040 for (band
= 1; band
<= 5; band
++) {
5042 iwl_init_band_reference(priv
, band
, &eeprom_ch_count
,
5043 &eeprom_ch_info
, &eeprom_ch_index
);
5045 /* Loop through each band adding each of the channels */
5046 for (ch
= 0; ch
< eeprom_ch_count
; ch
++) {
5047 ch_info
->channel
= eeprom_ch_index
[ch
];
5048 ch_info
->phymode
= (band
== 1) ? MODE_IEEE80211B
:
5051 /* permanently store EEPROM's channel regulatory flags
5052 * and max power in channel info database. */
5053 ch_info
->eeprom
= eeprom_ch_info
[ch
];
5055 /* Copy the run-time flags so they are there even on
5056 * invalid channels */
5057 ch_info
->flags
= eeprom_ch_info
[ch
].flags
;
5059 if (!(is_channel_valid(ch_info
))) {
5060 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5064 is_channel_a_band(ch_info
) ?
5070 /* Initialize regulatory-based run-time data */
5071 ch_info
->max_power_avg
= ch_info
->curr_txpow
=
5072 eeprom_ch_info
[ch
].max_power_avg
;
5073 ch_info
->scan_power
= eeprom_ch_info
[ch
].max_power_avg
;
5074 ch_info
->min_power
= 0;
5076 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5077 " %ddBm): Ad-Hoc %ssupported\n",
5079 is_channel_a_band(ch_info
) ?
5081 CHECK_AND_PRINT(IBSS
),
5082 CHECK_AND_PRINT(ACTIVE
),
5083 CHECK_AND_PRINT(RADAR
),
5084 CHECK_AND_PRINT(WIDE
),
5085 CHECK_AND_PRINT(NARROW
),
5086 CHECK_AND_PRINT(DFS
),
5087 eeprom_ch_info
[ch
].flags
,
5088 eeprom_ch_info
[ch
].max_power_avg
,
5089 ((eeprom_ch_info
[ch
].
5090 flags
& EEPROM_CHANNEL_IBSS
)
5091 && !(eeprom_ch_info
[ch
].
5092 flags
& EEPROM_CHANNEL_RADAR
))
5095 /* Set the user_txpower_limit to the highest power
5096 * supported by any channel */
5097 if (eeprom_ch_info
[ch
].max_power_avg
>
5098 priv
->user_txpower_limit
)
5099 priv
->user_txpower_limit
=
5100 eeprom_ch_info
[ch
].max_power_avg
;
5106 if (iwl3945_txpower_set_from_eeprom(priv
))
5112 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5113 * sending probe req. This should be set long enough to hear probe responses
5114 * from more than one AP. */
5115 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5116 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5118 /* For faster active scanning, scan will move to the next channel if fewer than
5119 * PLCP_QUIET_THRESH packets are heard on this channel within
5120 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5121 * time if it's a quiet channel (nothing responded to our probe, and there's
5122 * no other traffic).
5123 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5124 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5125 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5127 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5128 * Must be set longer than active dwell time.
5129 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5130 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5131 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5132 #define IWL_PASSIVE_DWELL_BASE (100)
5133 #define IWL_CHANNEL_TUNE_TIME 5
5135 static inline u16
iwl_get_active_dwell_time(struct iwl_priv
*priv
, int phymode
)
5137 if (phymode
== MODE_IEEE80211A
)
5138 return IWL_ACTIVE_DWELL_TIME_52
;
5140 return IWL_ACTIVE_DWELL_TIME_24
;
5143 static u16
iwl_get_passive_dwell_time(struct iwl_priv
*priv
, int phymode
)
5145 u16 active
= iwl_get_active_dwell_time(priv
, phymode
);
5146 u16 passive
= (phymode
!= MODE_IEEE80211A
) ?
5147 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
5148 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
5150 if (iwl_is_associated(priv
)) {
5151 /* If we're associated, we clamp the maximum passive
5152 * dwell time to be 98% of the beacon interval (minus
5153 * 2 * channel tune time) */
5154 passive
= priv
->beacon_int
;
5155 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
5156 passive
= IWL_PASSIVE_DWELL_BASE
;
5157 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
5160 if (passive
<= active
)
5161 passive
= active
+ 1;
5166 static int iwl_get_channels_for_scan(struct iwl_priv
*priv
, int phymode
,
5167 u8 is_active
, u8 direct_mask
,
5168 struct iwl_scan_channel
*scan_ch
)
5170 const struct ieee80211_channel
*channels
= NULL
;
5171 const struct ieee80211_hw_mode
*hw_mode
;
5172 const struct iwl_channel_info
*ch_info
;
5173 u16 passive_dwell
= 0;
5174 u16 active_dwell
= 0;
5177 hw_mode
= iwl_get_hw_mode(priv
, phymode
);
5181 channels
= hw_mode
->channels
;
5183 active_dwell
= iwl_get_active_dwell_time(priv
, phymode
);
5184 passive_dwell
= iwl_get_passive_dwell_time(priv
, phymode
);
5186 for (i
= 0, added
= 0; i
< hw_mode
->num_channels
; i
++) {
5187 if (channels
[i
].chan
==
5188 le16_to_cpu(priv
->active_rxon
.channel
)) {
5189 if (iwl_is_associated(priv
)) {
5191 ("Skipping current channel %d\n",
5192 le16_to_cpu(priv
->active_rxon
.channel
));
5195 } else if (priv
->only_active_channel
)
5198 scan_ch
->channel
= channels
[i
].chan
;
5200 ch_info
= iwl_get_channel_info(priv
, phymode
, scan_ch
->channel
);
5201 if (!is_channel_valid(ch_info
)) {
5202 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5207 if (!is_active
|| is_channel_passive(ch_info
) ||
5208 !(channels
[i
].flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
))
5209 scan_ch
->type
= 0; /* passive */
5211 scan_ch
->type
= 1; /* active */
5213 if (scan_ch
->type
& 1)
5214 scan_ch
->type
|= (direct_mask
<< 1);
5216 if (is_channel_narrow(ch_info
))
5217 scan_ch
->type
|= (1 << 7);
5219 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
5220 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
5222 /* Set power levels to defaults */
5223 scan_ch
->tpc
.dsp_atten
= 110;
5224 /* scan_pwr_info->tpc.dsp_atten; */
5226 /*scan_pwr_info->tpc.tx_gain; */
5227 if (phymode
== MODE_IEEE80211A
)
5228 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
5230 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
5231 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5233 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5237 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5239 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
5240 (scan_ch
->type
& 1) ?
5241 active_dwell
: passive_dwell
);
5247 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
5251 static void iwl_reset_channel_flag(struct iwl_priv
*priv
)
5254 for (i
= 0; i
< 3; i
++) {
5255 struct ieee80211_hw_mode
*hw_mode
= (void *)&priv
->modes
[i
];
5256 for (j
= 0; j
< hw_mode
->num_channels
; j
++)
5257 hw_mode
->channels
[j
].flag
= hw_mode
->channels
[j
].val
;
5261 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
5262 struct ieee80211_rate
*rates
)
5266 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
5267 rates
[i
].rate
= iwl_rates
[i
].ieee
* 5;
5268 rates
[i
].val
= i
; /* Rate scaling will work on indexes */
5270 rates
[i
].flags
= IEEE80211_RATE_SUPPORTED
;
5271 /* Only OFDM have the bits-per-symbol set */
5272 if ((i
<= IWL_LAST_OFDM_RATE
) && (i
>= IWL_FIRST_OFDM_RATE
))
5273 rates
[i
].flags
|= IEEE80211_RATE_OFDM
;
5276 * If CCK 1M then set rate flag to CCK else CCK_2
5277 * which is CCK | PREAMBLE2
5279 rates
[i
].flags
|= (iwl_rates
[i
].plcp
== 10) ?
5280 IEEE80211_RATE_CCK
: IEEE80211_RATE_CCK_2
;
5283 /* Set up which ones are basic rates... */
5284 if (IWL_BASIC_RATES_MASK
& (1 << i
))
5285 rates
[i
].flags
|= IEEE80211_RATE_BASIC
;
5290 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5292 static int iwl_init_geos(struct iwl_priv
*priv
)
5294 struct iwl_channel_info
*ch
;
5295 struct ieee80211_hw_mode
*modes
;
5296 struct ieee80211_channel
*channels
;
5297 struct ieee80211_channel
*geo_ch
;
5298 struct ieee80211_rate
*rates
;
5308 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5309 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5313 modes
= kzalloc(sizeof(struct ieee80211_hw_mode
) * mode_count
,
5318 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
5319 priv
->channel_count
, GFP_KERNEL
);
5325 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_MAX_RATES
+ 1)),
5338 /* 5.2GHz channels start after the 2.4GHz channels */
5339 modes
[A
].mode
= MODE_IEEE80211A
;
5340 modes
[A
].channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
5341 modes
[A
].rates
= &rates
[4];
5342 modes
[A
].num_rates
= 8; /* just OFDM */
5343 modes
[A
].num_channels
= 0;
5345 modes
[B
].mode
= MODE_IEEE80211B
;
5346 modes
[B
].channels
= channels
;
5347 modes
[B
].rates
= rates
;
5348 modes
[B
].num_rates
= 4; /* just CCK */
5349 modes
[B
].num_channels
= 0;
5351 modes
[G
].mode
= MODE_IEEE80211G
;
5352 modes
[G
].channels
= channels
;
5353 modes
[G
].rates
= rates
;
5354 modes
[G
].num_rates
= 12; /* OFDM & CCK */
5355 modes
[G
].num_channels
= 0;
5357 priv
->ieee_channels
= channels
;
5358 priv
->ieee_rates
= rates
;
5360 iwl_init_hw_rates(priv
, rates
);
5362 for (i
= 0, geo_ch
= channels
; i
< priv
->channel_count
; i
++) {
5363 ch
= &priv
->channel_info
[i
];
5365 if (!is_channel_valid(ch
)) {
5366 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5368 ch
->channel
, is_channel_a_band(ch
) ?
5373 if (is_channel_a_band(ch
))
5374 geo_ch
= &modes
[A
].channels
[modes
[A
].num_channels
++];
5376 geo_ch
= &modes
[B
].channels
[modes
[B
].num_channels
++];
5377 modes
[G
].num_channels
++;
5380 geo_ch
->freq
= ieee80211chan2mhz(ch
->channel
);
5381 geo_ch
->chan
= ch
->channel
;
5382 geo_ch
->power_level
= ch
->max_power_avg
;
5383 geo_ch
->antenna_max
= 0xff;
5385 if (is_channel_valid(ch
)) {
5386 geo_ch
->flag
= IEEE80211_CHAN_W_SCAN
;
5387 if (ch
->flags
& EEPROM_CHANNEL_IBSS
)
5388 geo_ch
->flag
|= IEEE80211_CHAN_W_IBSS
;
5390 if (ch
->flags
& EEPROM_CHANNEL_ACTIVE
)
5391 geo_ch
->flag
|= IEEE80211_CHAN_W_ACTIVE_SCAN
;
5393 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
5394 geo_ch
->flag
|= IEEE80211_CHAN_W_RADAR_DETECT
;
5396 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
5397 priv
->max_channel_txpower_limit
=
5401 geo_ch
->val
= geo_ch
->flag
;
5404 if ((modes
[A
].num_channels
== 0) && priv
->is_abg
) {
5405 printk(KERN_INFO DRV_NAME
5406 ": Incorrectly detected BG card as ABG. Please send "
5407 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5408 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
5412 printk(KERN_INFO DRV_NAME
5413 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5414 modes
[G
].num_channels
, modes
[A
].num_channels
);
5417 * NOTE: We register these in preference of order -- the
5418 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5419 * a phymode based on rates or AP capabilities but seems to
5420 * configure it purely on if the channel being configured
5421 * is supported by a mode -- and the first match is taken
5424 if (modes
[G
].num_channels
)
5425 ieee80211_register_hwmode(priv
->hw
, &modes
[G
]);
5426 if (modes
[B
].num_channels
)
5427 ieee80211_register_hwmode(priv
->hw
, &modes
[B
]);
5428 if (modes
[A
].num_channels
)
5429 ieee80211_register_hwmode(priv
->hw
, &modes
[A
]);
5431 priv
->modes
= modes
;
5432 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5437 /******************************************************************************
5439 * uCode download functions
5441 ******************************************************************************/
5443 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
5445 if (priv
->ucode_code
.v_addr
!= NULL
) {
5446 pci_free_consistent(priv
->pci_dev
,
5447 priv
->ucode_code
.len
,
5448 priv
->ucode_code
.v_addr
,
5449 priv
->ucode_code
.p_addr
);
5450 priv
->ucode_code
.v_addr
= NULL
;
5452 if (priv
->ucode_data
.v_addr
!= NULL
) {
5453 pci_free_consistent(priv
->pci_dev
,
5454 priv
->ucode_data
.len
,
5455 priv
->ucode_data
.v_addr
,
5456 priv
->ucode_data
.p_addr
);
5457 priv
->ucode_data
.v_addr
= NULL
;
5459 if (priv
->ucode_data_backup
.v_addr
!= NULL
) {
5460 pci_free_consistent(priv
->pci_dev
,
5461 priv
->ucode_data_backup
.len
,
5462 priv
->ucode_data_backup
.v_addr
,
5463 priv
->ucode_data_backup
.p_addr
);
5464 priv
->ucode_data_backup
.v_addr
= NULL
;
5466 if (priv
->ucode_init
.v_addr
!= NULL
) {
5467 pci_free_consistent(priv
->pci_dev
,
5468 priv
->ucode_init
.len
,
5469 priv
->ucode_init
.v_addr
,
5470 priv
->ucode_init
.p_addr
);
5471 priv
->ucode_init
.v_addr
= NULL
;
5473 if (priv
->ucode_init_data
.v_addr
!= NULL
) {
5474 pci_free_consistent(priv
->pci_dev
,
5475 priv
->ucode_init_data
.len
,
5476 priv
->ucode_init_data
.v_addr
,
5477 priv
->ucode_init_data
.p_addr
);
5478 priv
->ucode_init_data
.v_addr
= NULL
;
5480 if (priv
->ucode_boot
.v_addr
!= NULL
) {
5481 pci_free_consistent(priv
->pci_dev
,
5482 priv
->ucode_boot
.len
,
5483 priv
->ucode_boot
.v_addr
,
5484 priv
->ucode_boot
.p_addr
);
5485 priv
->ucode_boot
.v_addr
= NULL
;
5490 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5491 * looking at all data.
5493 static int iwl_verify_inst_full(struct iwl_priv
*priv
, __le32
* image
, u32 len
)
5500 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5502 rc
= iwl_grab_restricted_access(priv
);
5506 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5509 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5510 /* read data comes through single port, auto-incr addr */
5511 /* NOTE: Use the debugless read so we don't flood kernel log
5512 * if IWL_DL_IO is set */
5513 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5514 if (val
!= le32_to_cpu(*image
)) {
5515 IWL_ERROR("uCode INST section is invalid at "
5516 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5517 save_len
- len
, val
, le32_to_cpu(*image
));
5525 iwl_release_restricted_access(priv
);
5529 ("ucode image in INSTRUCTION memory is good\n");
5536 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5537 * using sample data 100 bytes apart. If these sample points are good,
5538 * it's a pretty good bet that everything between them is good, too.
5540 static int iwl_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5547 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5549 rc
= iwl_grab_restricted_access(priv
);
5553 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5554 /* read data comes through single port, auto-incr addr */
5555 /* NOTE: Use the debugless read so we don't flood kernel log
5556 * if IWL_DL_IO is set */
5557 iwl_write_restricted(priv
, HBUS_TARG_MEM_RADDR
,
5558 i
+ RTC_INST_LOWER_BOUND
);
5559 val
= _iwl_read_restricted(priv
, HBUS_TARG_MEM_RDAT
);
5560 if (val
!= le32_to_cpu(*image
)) {
5561 #if 0 /* Enable this if you want to see details */
5562 IWL_ERROR("uCode INST section is invalid at "
5563 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5573 iwl_release_restricted_access(priv
);
5580 * iwl_verify_ucode - determine which instruction image is in SRAM,
5581 * and verify its contents
5583 static int iwl_verify_ucode(struct iwl_priv
*priv
)
5590 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5591 len
= priv
->ucode_boot
.len
;
5592 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5594 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5598 /* Try initialize */
5599 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5600 len
= priv
->ucode_init
.len
;
5601 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5603 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5607 /* Try runtime/protocol */
5608 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5609 len
= priv
->ucode_code
.len
;
5610 rc
= iwl_verify_inst_sparse(priv
, image
, len
);
5612 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5616 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5618 /* Show first several data entries in instruction SRAM.
5619 * Selection of bootstrap image is arbitrary. */
5620 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5621 len
= priv
->ucode_boot
.len
;
5622 rc
= iwl_verify_inst_full(priv
, image
, len
);
5628 /* check contents of special bootstrap uCode SRAM */
5629 static int iwl_verify_bsm(struct iwl_priv
*priv
)
5631 __le32
*image
= priv
->ucode_boot
.v_addr
;
5632 u32 len
= priv
->ucode_boot
.len
;
5636 IWL_DEBUG_INFO("Begin verify bsm\n");
5638 /* verify BSM SRAM contents */
5639 val
= iwl_read_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
);
5640 for (reg
= BSM_SRAM_LOWER_BOUND
;
5641 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
5642 reg
+= sizeof(u32
), image
++) {
5643 val
= iwl_read_restricted_reg(priv
, reg
);
5644 if (val
!= le32_to_cpu(*image
)) {
5645 IWL_ERROR("BSM uCode verification failed at "
5646 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5647 BSM_SRAM_LOWER_BOUND
,
5648 reg
- BSM_SRAM_LOWER_BOUND
, len
,
5649 val
, le32_to_cpu(*image
));
5654 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5660 * iwl_load_bsm - Load bootstrap instructions
5664 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5665 * in special SRAM that does not power down during RFKILL. When powering back
5666 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5667 * the bootstrap program into the on-board processor, and starts it.
5669 * The bootstrap program loads (via DMA) instructions and data for a new
5670 * program from host DRAM locations indicated by the host driver in the
5671 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5674 * When initializing the NIC, the host driver points the BSM to the
5675 * "initialize" uCode image. This uCode sets up some internal data, then
5676 * notifies host via "initialize alive" that it is complete.
5678 * The host then replaces the BSM_DRAM_* pointer values to point to the
5679 * normal runtime uCode instructions and a backup uCode data cache buffer
5680 * (filled initially with starting data values for the on-board processor),
5681 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5682 * which begins normal operation.
5684 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5685 * the backup data cache in DRAM before SRAM is powered down.
5687 * When powering back up, the BSM loads the bootstrap program. This reloads
5688 * the runtime uCode instructions and the backup data cache into SRAM,
5689 * and re-launches the runtime uCode from where it left off.
5691 static int iwl_load_bsm(struct iwl_priv
*priv
)
5693 __le32
*image
= priv
->ucode_boot
.v_addr
;
5694 u32 len
= priv
->ucode_boot
.len
;
5704 IWL_DEBUG_INFO("Begin load bsm\n");
5706 /* make sure bootstrap program is no larger than BSM's SRAM size */
5707 if (len
> IWL_MAX_BSM_SIZE
)
5710 /* Tell bootstrap uCode where to find the "Initialize" uCode
5711 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
5712 * NOTE: iwl_initialize_alive_start() will replace these values,
5713 * after the "initialize" uCode has run, to point to
5714 * runtime/protocol instructions and backup data cache. */
5715 pinst
= priv
->ucode_init
.p_addr
;
5716 pdata
= priv
->ucode_init_data
.p_addr
;
5717 inst_len
= priv
->ucode_init
.len
;
5718 data_len
= priv
->ucode_init_data
.len
;
5720 rc
= iwl_grab_restricted_access(priv
);
5724 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
5725 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
5726 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
5727 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
5729 /* Fill BSM memory with bootstrap instructions */
5730 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
5731 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
5732 reg_offset
+= sizeof(u32
), image
++)
5733 _iwl_write_restricted_reg(priv
, reg_offset
,
5734 le32_to_cpu(*image
));
5736 rc
= iwl_verify_bsm(priv
);
5738 iwl_release_restricted_access(priv
);
5742 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5743 iwl_write_restricted_reg(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
5744 iwl_write_restricted_reg(priv
, BSM_WR_MEM_DST_REG
,
5745 RTC_INST_LOWER_BOUND
);
5746 iwl_write_restricted_reg(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
5748 /* Load bootstrap code into instruction SRAM now,
5749 * to prepare to load "initialize" uCode */
5750 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
5751 BSM_WR_CTRL_REG_BIT_START
);
5753 /* Wait for load of bootstrap uCode to finish */
5754 for (i
= 0; i
< 100; i
++) {
5755 done
= iwl_read_restricted_reg(priv
, BSM_WR_CTRL_REG
);
5756 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
5761 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
5763 IWL_ERROR("BSM write did not complete!\n");
5767 /* Enable future boot loads whenever power management unit triggers it
5768 * (e.g. when powering back up after power-save shutdown) */
5769 iwl_write_restricted_reg(priv
, BSM_WR_CTRL_REG
,
5770 BSM_WR_CTRL_REG_BIT_START_EN
);
5772 iwl_release_restricted_access(priv
);
5777 static void iwl_nic_start(struct iwl_priv
*priv
)
5779 /* Remove all resets to allow NIC to operate */
5780 iwl_write32(priv
, CSR_RESET
, 0);
5784 * iwl_read_ucode - Read uCode images from disk file.
5786 * Copy into buffers for card to fetch via bus-mastering
5788 static int iwl_read_ucode(struct iwl_priv
*priv
)
5790 struct iwl_ucode
*ucode
;
5792 const struct firmware
*ucode_raw
;
5793 /* firmware file name contains uCode/driver compatibility version */
5794 const char *name
= "iwlwifi-3945" IWL3945_UCODE_API
".ucode";
5797 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
5799 /* Ask kernel firmware_class module to get the boot firmware off disk.
5800 * request_firmware() is synchronous, file is in memory on return. */
5801 rc
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
5803 IWL_ERROR("%s firmware file req failed: Reason %d\n", name
, rc
);
5807 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5808 name
, ucode_raw
->size
);
5810 /* Make sure that we got at least our header! */
5811 if (ucode_raw
->size
< sizeof(*ucode
)) {
5812 IWL_ERROR("File size way too small!\n");
5817 /* Data from ucode file: header followed by uCode images */
5818 ucode
= (void *)ucode_raw
->data
;
5820 ver
= le32_to_cpu(ucode
->ver
);
5821 inst_size
= le32_to_cpu(ucode
->inst_size
);
5822 data_size
= le32_to_cpu(ucode
->data_size
);
5823 init_size
= le32_to_cpu(ucode
->init_size
);
5824 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
5825 boot_size
= le32_to_cpu(ucode
->boot_size
);
5827 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
5828 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5830 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5832 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5834 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5836 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5839 /* Verify size of file vs. image size info in file's header */
5840 if (ucode_raw
->size
< sizeof(*ucode
) +
5841 inst_size
+ data_size
+ init_size
+
5842 init_data_size
+ boot_size
) {
5844 IWL_DEBUG_INFO("uCode file size %d too small\n",
5845 (int)ucode_raw
->size
);
5850 /* Verify that uCode images will fit in card's SRAM */
5851 if (inst_size
> IWL_MAX_INST_SIZE
) {
5852 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
5858 if (data_size
> IWL_MAX_DATA_SIZE
) {
5859 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
5864 if (init_size
> IWL_MAX_INST_SIZE
) {
5866 ("uCode init instr len %d too large to fit in card\n",
5871 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
5873 ("uCode init data len %d too large to fit in card\n",
5874 (int)init_data_size
);
5878 if (boot_size
> IWL_MAX_BSM_SIZE
) {
5880 ("uCode boot instr len %d too large to fit in bsm\n",
5886 /* Allocate ucode buffers for card's bus-master loading ... */
5888 /* Runtime instructions and 2 copies of data:
5889 * 1) unmodified from disk
5890 * 2) backup cache for save/restore during power-downs */
5891 priv
->ucode_code
.len
= inst_size
;
5892 priv
->ucode_code
.v_addr
=
5893 pci_alloc_consistent(priv
->pci_dev
,
5894 priv
->ucode_code
.len
,
5895 &(priv
->ucode_code
.p_addr
));
5897 priv
->ucode_data
.len
= data_size
;
5898 priv
->ucode_data
.v_addr
=
5899 pci_alloc_consistent(priv
->pci_dev
,
5900 priv
->ucode_data
.len
,
5901 &(priv
->ucode_data
.p_addr
));
5903 priv
->ucode_data_backup
.len
= data_size
;
5904 priv
->ucode_data_backup
.v_addr
=
5905 pci_alloc_consistent(priv
->pci_dev
,
5906 priv
->ucode_data_backup
.len
,
5907 &(priv
->ucode_data_backup
.p_addr
));
5910 /* Initialization instructions and data */
5911 priv
->ucode_init
.len
= init_size
;
5912 priv
->ucode_init
.v_addr
=
5913 pci_alloc_consistent(priv
->pci_dev
,
5914 priv
->ucode_init
.len
,
5915 &(priv
->ucode_init
.p_addr
));
5917 priv
->ucode_init_data
.len
= init_data_size
;
5918 priv
->ucode_init_data
.v_addr
=
5919 pci_alloc_consistent(priv
->pci_dev
,
5920 priv
->ucode_init_data
.len
,
5921 &(priv
->ucode_init_data
.p_addr
));
5923 /* Bootstrap (instructions only, no data) */
5924 priv
->ucode_boot
.len
= boot_size
;
5925 priv
->ucode_boot
.v_addr
=
5926 pci_alloc_consistent(priv
->pci_dev
,
5927 priv
->ucode_boot
.len
,
5928 &(priv
->ucode_boot
.p_addr
));
5930 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
5931 !priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
||
5932 !priv
->ucode_boot
.v_addr
|| !priv
->ucode_data_backup
.v_addr
)
5935 /* Copy images into buffers for card's bus-master reads ... */
5937 /* Runtime instructions (first block of data in file) */
5938 src
= &ucode
->data
[0];
5939 len
= priv
->ucode_code
.len
;
5940 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
5942 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
5943 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5944 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
5946 /* Runtime data (2nd block)
5947 * NOTE: Copy into backup buffer will be done in iwl_up() */
5948 src
= &ucode
->data
[inst_size
];
5949 len
= priv
->ucode_data
.len
;
5950 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
5952 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
5953 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
5955 /* Initialization instructions (3rd block) */
5957 src
= &ucode
->data
[inst_size
+ data_size
];
5958 len
= priv
->ucode_init
.len
;
5959 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
5961 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
5964 /* Initialization data (4th block) */
5965 if (init_data_size
) {
5966 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
5967 len
= priv
->ucode_init_data
.len
;
5968 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5970 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
5973 /* Bootstrap instructions (5th block) */
5974 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
5975 len
= priv
->ucode_boot
.len
;
5976 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5978 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
5980 /* We have our copies now, allow OS release its copies */
5981 release_firmware(ucode_raw
);
5985 IWL_ERROR("failed to allocate pci memory\n");
5987 iwl_dealloc_ucode_pci(priv
);
5990 release_firmware(ucode_raw
);
5998 * iwl_set_ucode_ptrs - Set uCode address location
6000 * Tell initialization uCode where to find runtime uCode.
6002 * BSM registers initially contain pointers to initialization uCode.
6003 * We need to replace them to load runtime uCode inst and data,
6004 * and to save runtime data when powering down.
6006 static int iwl_set_ucode_ptrs(struct iwl_priv
*priv
)
6011 unsigned long flags
;
6013 /* bits 31:0 for 3945 */
6014 pinst
= priv
->ucode_code
.p_addr
;
6015 pdata
= priv
->ucode_data_backup
.p_addr
;
6017 spin_lock_irqsave(&priv
->lock
, flags
);
6018 rc
= iwl_grab_restricted_access(priv
);
6020 spin_unlock_irqrestore(&priv
->lock
, flags
);
6024 /* Tell bootstrap uCode where to find image to load */
6025 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
6026 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
6027 iwl_write_restricted_reg(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
6028 priv
->ucode_data
.len
);
6030 /* Inst bytecount must be last to set up, bit 31 signals uCode
6031 * that all new ptr/size info is in place */
6032 iwl_write_restricted_reg(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
6033 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
6035 iwl_release_restricted_access(priv
);
6037 spin_unlock_irqrestore(&priv
->lock
, flags
);
6039 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6045 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6047 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6049 * The 4965 "initialize" ALIVE reply contains calibration data for:
6050 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6051 * (3945 does not contain this data).
6053 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6055 static void iwl_init_alive_start(struct iwl_priv
*priv
)
6057 /* Check alive response for "valid" sign from uCode */
6058 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
6059 /* We had an error bringing up the hardware, so take it
6060 * all the way back down so we can try again */
6061 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6065 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6066 * This is a paranoid check, because we would not have gotten the
6067 * "initialize" alive if code weren't properly loaded. */
6068 if (iwl_verify_ucode(priv
)) {
6069 /* Runtime instruction load was bad;
6070 * take it all the way back down so we can try again */
6071 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6075 /* Send pointers to protocol/runtime uCode image ... init code will
6076 * load and launch runtime uCode, which will send us another "Alive"
6078 IWL_DEBUG_INFO("Initialization Alive received.\n");
6079 if (iwl_set_ucode_ptrs(priv
)) {
6080 /* Runtime instruction load won't happen;
6081 * take it all the way back down so we can try again */
6082 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6088 queue_work(priv
->workqueue
, &priv
->restart
);
6093 * iwl_alive_start - called after REPLY_ALIVE notification received
6094 * from protocol/runtime uCode (initialization uCode's
6095 * Alive gets handled by iwl_init_alive_start()).
6097 static void iwl_alive_start(struct iwl_priv
*priv
)
6100 int thermal_spin
= 0;
6103 IWL_DEBUG_INFO("Runtime Alive received.\n");
6105 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
6106 /* We had an error bringing up the hardware, so take it
6107 * all the way back down so we can try again */
6108 IWL_DEBUG_INFO("Alive failed.\n");
6112 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6113 * This is a paranoid check, because we would not have gotten the
6114 * "runtime" alive if code weren't properly loaded. */
6115 if (iwl_verify_ucode(priv
)) {
6116 /* Runtime instruction load was bad;
6117 * take it all the way back down so we can try again */
6118 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6122 iwl_clear_stations_table(priv
);
6124 rc
= iwl_grab_restricted_access(priv
);
6126 IWL_WARNING("Can not read rfkill status from adapter\n");
6130 rfkill
= iwl_read_restricted_reg(priv
, APMG_RFKILL_REG
);
6131 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill
);
6132 iwl_release_restricted_access(priv
);
6135 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
6136 /* if rfkill is not on, then wait for thermal
6137 * sensor in adapter to kick in */
6138 while (iwl_hw_get_temperature(priv
) == 0) {
6144 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6147 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
6149 /* After the ALIVE response, we can process host commands */
6150 set_bit(STATUS_ALIVE
, &priv
->status
);
6152 /* Clear out the uCode error bit if it is set */
6153 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
6155 rc
= iwl_init_channel_map(priv
);
6157 IWL_ERROR("initializing regulatory failed: %d\n", rc
);
6161 iwl_init_geos(priv
);
6163 if (iwl_is_rfkill(priv
))
6166 if (!priv
->mac80211_registered
) {
6167 /* Unlock so any user space entry points can call back into
6168 * the driver without a deadlock... */
6169 mutex_unlock(&priv
->mutex
);
6170 iwl_rate_control_register(priv
->hw
);
6171 rc
= ieee80211_register_hw(priv
->hw
);
6172 priv
->hw
->conf
.beacon_int
= 100;
6173 mutex_lock(&priv
->mutex
);
6176 iwl_rate_control_unregister(priv
->hw
);
6177 IWL_ERROR("Failed to register network "
6178 "device (error %d)\n", rc
);
6182 priv
->mac80211_registered
= 1;
6184 iwl_reset_channel_flag(priv
);
6186 ieee80211_start_queues(priv
->hw
);
6188 priv
->active_rate
= priv
->rates_mask
;
6189 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
6191 iwl_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
6193 if (iwl_is_associated(priv
)) {
6194 struct iwl_rxon_cmd
*active_rxon
=
6195 (struct iwl_rxon_cmd
*)(&priv
->active_rxon
);
6197 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
6198 sizeof(priv
->staging_rxon
));
6199 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6201 /* Initialize our rx_config data */
6202 iwl_connection_init_rx_config(priv
);
6203 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
6206 /* Configure BT coexistence */
6207 iwl_send_bt_config(priv
);
6209 /* Configure the adapter for unassociated operation */
6210 iwl_commit_rxon(priv
);
6212 /* At this point, the NIC is initialized and operational */
6213 priv
->notif_missed_beacons
= 0;
6214 set_bit(STATUS_READY
, &priv
->status
);
6216 iwl3945_reg_txpower_periodic(priv
);
6218 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6220 if (priv
->error_recovering
)
6221 iwl_error_recovery(priv
);
6226 queue_work(priv
->workqueue
, &priv
->restart
);
6229 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
6231 static void __iwl_down(struct iwl_priv
*priv
)
6233 unsigned long flags
;
6234 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6235 struct ieee80211_conf
*conf
= NULL
;
6237 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
6239 conf
= ieee80211_get_hw_conf(priv
->hw
);
6242 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6244 iwl_clear_stations_table(priv
);
6246 /* Unblock any waiting calls */
6247 wake_up_interruptible_all(&priv
->wait_command_queue
);
6249 /* Wipe out the EXIT_PENDING status bit if we are not actually
6250 * exiting the module */
6252 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6254 /* stop and reset the on-board processor */
6255 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
6257 /* tell the device to stop sending interrupts */
6258 iwl_disable_interrupts(priv
);
6260 if (priv
->mac80211_registered
)
6261 ieee80211_stop_queues(priv
->hw
);
6263 /* If we have not previously called iwl_init() then
6264 * clear all bits but the RF Kill and SUSPEND bits and return */
6265 if (!iwl_is_init(priv
)) {
6266 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6268 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6270 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6275 /* ...otherwise clear out all the status bits but the RF Kill and
6276 * SUSPEND bits and continue taking the NIC down. */
6277 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
6279 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
6281 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
6283 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
6286 spin_lock_irqsave(&priv
->lock
, flags
);
6287 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
6288 spin_unlock_irqrestore(&priv
->lock
, flags
);
6290 iwl_hw_txq_ctx_stop(priv
);
6291 iwl_hw_rxq_stop(priv
);
6293 spin_lock_irqsave(&priv
->lock
, flags
);
6294 if (!iwl_grab_restricted_access(priv
)) {
6295 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
6296 APMG_CLK_VAL_DMA_CLK_RQT
);
6297 iwl_release_restricted_access(priv
);
6299 spin_unlock_irqrestore(&priv
->lock
, flags
);
6303 iwl_hw_nic_stop_master(priv
);
6304 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
6305 iwl_hw_nic_reset(priv
);
6308 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
6310 if (priv
->ibss_beacon
)
6311 dev_kfree_skb(priv
->ibss_beacon
);
6312 priv
->ibss_beacon
= NULL
;
6314 /* clear out any free frames */
6315 iwl_clear_free_frames(priv
);
6318 static void iwl_down(struct iwl_priv
*priv
)
6320 mutex_lock(&priv
->mutex
);
6322 mutex_unlock(&priv
->mutex
);
6324 iwl_cancel_deferred_work(priv
);
6327 #define MAX_HW_RESTARTS 5
6329 static int __iwl_up(struct iwl_priv
*priv
)
6331 DECLARE_MAC_BUF(mac
);
6334 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6335 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6339 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
6340 IWL_WARNING("Radio disabled by SW RF kill (module "
6345 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
6346 IWL_ERROR("ucode not available for device bringup\n");
6350 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6352 rc
= iwl_hw_nic_init(priv
);
6354 IWL_ERROR("Unable to int nic\n");
6358 /* make sure rfkill handshake bits are cleared */
6359 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6360 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
6361 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
6363 /* clear (again), then enable host interrupts */
6364 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
6365 iwl_enable_interrupts(priv
);
6367 /* really make sure rfkill handshake bits are cleared */
6368 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6369 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
6371 /* Copy original ucode data image from disk into backup cache.
6372 * This will be used to initialize the on-board processor's
6373 * data SRAM for a clean start when the runtime program first loads. */
6374 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
6375 priv
->ucode_data
.len
);
6377 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
6379 iwl_clear_stations_table(priv
);
6381 /* load bootstrap state machine,
6382 * load bootstrap program into processor's memory,
6383 * prepare to load the "initialize" uCode */
6384 rc
= iwl_load_bsm(priv
);
6387 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc
);
6391 /* start card; "initialize" will load runtime ucode */
6392 iwl_nic_start(priv
);
6394 /* MAC Address location in EEPROM same for 3945/4965 */
6395 get_eeprom_mac(priv
, priv
->mac_addr
);
6396 IWL_DEBUG_INFO("MAC address: %s\n",
6397 print_mac(mac
, priv
->mac_addr
));
6399 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
6401 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
6406 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
6409 /* tried to restart and config the device for as long as our
6410 * patience could withstand */
6411 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
6416 /*****************************************************************************
6418 * Workqueue callbacks
6420 *****************************************************************************/
6422 static void iwl_bg_init_alive_start(struct work_struct
*data
)
6424 struct iwl_priv
*priv
=
6425 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
6427 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6430 mutex_lock(&priv
->mutex
);
6431 iwl_init_alive_start(priv
);
6432 mutex_unlock(&priv
->mutex
);
6435 static void iwl_bg_alive_start(struct work_struct
*data
)
6437 struct iwl_priv
*priv
=
6438 container_of(data
, struct iwl_priv
, alive_start
.work
);
6440 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6443 mutex_lock(&priv
->mutex
);
6444 iwl_alive_start(priv
);
6445 mutex_unlock(&priv
->mutex
);
6448 static void iwl_bg_rf_kill(struct work_struct
*work
)
6450 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
6452 wake_up_interruptible(&priv
->wait_command_queue
);
6454 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6457 mutex_lock(&priv
->mutex
);
6459 if (!iwl_is_rfkill(priv
)) {
6460 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
6461 "HW and/or SW RF Kill no longer active, restarting "
6463 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6464 queue_work(priv
->workqueue
, &priv
->restart
);
6467 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
6468 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6469 "disabled by SW switch\n");
6471 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6472 "Kill switch must be turned off for "
6473 "wireless networking to work.\n");
6475 mutex_unlock(&priv
->mutex
);
6478 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6480 static void iwl_bg_scan_check(struct work_struct
*data
)
6482 struct iwl_priv
*priv
=
6483 container_of(data
, struct iwl_priv
, scan_check
.work
);
6485 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6488 mutex_lock(&priv
->mutex
);
6489 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
6490 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6491 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
6492 "Scan completion watchdog resetting adapter (%dms)\n",
6493 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
6495 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6496 iwl_send_scan_abort(priv
);
6498 mutex_unlock(&priv
->mutex
);
6501 static void iwl_bg_request_scan(struct work_struct
*data
)
6503 struct iwl_priv
*priv
=
6504 container_of(data
, struct iwl_priv
, request_scan
);
6505 struct iwl_host_cmd cmd
= {
6506 .id
= REPLY_SCAN_CMD
,
6507 .len
= sizeof(struct iwl_scan_cmd
),
6508 .meta
.flags
= CMD_SIZE_HUGE
,
6511 struct iwl_scan_cmd
*scan
;
6512 struct ieee80211_conf
*conf
= NULL
;
6516 conf
= ieee80211_get_hw_conf(priv
->hw
);
6518 mutex_lock(&priv
->mutex
);
6520 if (!iwl_is_ready(priv
)) {
6521 IWL_WARNING("request scan called when driver not ready.\n");
6525 /* Make sure the scan wasn't cancelled before this queued work
6526 * was given the chance to run... */
6527 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
6530 /* This should never be called or scheduled if there is currently
6531 * a scan active in the hardware. */
6532 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
6533 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6534 "Ignoring second request.\n");
6539 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
6540 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6544 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
6545 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6549 if (iwl_is_rfkill(priv
)) {
6550 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6554 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6555 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6559 if (!priv
->scan_bands
) {
6560 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6565 priv
->scan
= kmalloc(sizeof(struct iwl_scan_cmd
) +
6566 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
6573 memset(scan
, 0, sizeof(struct iwl_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
6575 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
6576 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
6578 if (iwl_is_associated(priv
)) {
6581 u32 suspend_time
= 100;
6582 u32 scan_suspend_time
= 100;
6583 unsigned long flags
;
6585 IWL_DEBUG_INFO("Scanning while associated...\n");
6587 spin_lock_irqsave(&priv
->lock
, flags
);
6588 interval
= priv
->beacon_int
;
6589 spin_unlock_irqrestore(&priv
->lock
, flags
);
6591 scan
->suspend_time
= 0;
6592 scan
->max_out_time
= cpu_to_le32(200 * 1024);
6594 interval
= suspend_time
;
6596 * suspend time format:
6597 * 0-19: beacon interval in usec (time before exec.)
6599 * 24-31: number of beacons (suspend between channels)
6602 extra
= (suspend_time
/ interval
) << 24;
6603 scan_suspend_time
= 0xFF0FFFFF &
6604 (extra
| ((suspend_time
% interval
) * 1024));
6606 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
6607 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6608 scan_suspend_time
, interval
);
6611 /* We should add the ability for user to lock to PASSIVE ONLY */
6612 if (priv
->one_direct_scan
) {
6614 ("Kicking off one direct scan for '%s'\n",
6615 iwl_escape_essid(priv
->direct_ssid
,
6616 priv
->direct_ssid_len
));
6617 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6618 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
6619 memcpy(scan
->direct_scan
[0].ssid
,
6620 priv
->direct_ssid
, priv
->direct_ssid_len
);
6622 } else if (!iwl_is_associated(priv
) && priv
->essid_len
) {
6623 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
6624 scan
->direct_scan
[0].len
= priv
->essid_len
;
6625 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
6630 /* We don't build a direct scan probe request; the uCode will do
6631 * that based on the direct_mask added to each channel entry */
6632 scan
->tx_cmd
.len
= cpu_to_le16(
6633 iwl_fill_probe_req(priv
, (struct ieee80211_mgmt
*)scan
->data
,
6634 IWL_MAX_SCAN_SIZE
- sizeof(scan
), 0));
6635 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6636 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6637 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6639 /* flags + rate selection */
6641 switch (priv
->scan_bands
) {
6643 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6644 scan
->tx_cmd
.rate
= IWL_RATE_1M_PLCP
;
6645 scan
->good_CRC_th
= 0;
6646 phymode
= MODE_IEEE80211G
;
6650 scan
->tx_cmd
.rate
= IWL_RATE_6M_PLCP
;
6651 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
6652 phymode
= MODE_IEEE80211A
;
6656 IWL_WARNING("Invalid scan band count\n");
6660 /* select Rx antennas */
6661 scan
->flags
|= iwl3945_get_antenna_flags(priv
);
6663 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
6664 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
6668 ("Initiating direct scan for %s.\n",
6669 iwl_escape_essid(priv
->essid
, priv
->essid_len
));
6671 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6673 scan
->channel_count
=
6674 iwl_get_channels_for_scan(
6675 priv
, phymode
, 1, /* active */
6677 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
6679 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
6680 scan
->channel_count
* sizeof(struct iwl_scan_channel
);
6682 scan
->len
= cpu_to_le16(cmd
.len
);
6684 set_bit(STATUS_SCAN_HW
, &priv
->status
);
6685 rc
= iwl_send_cmd_sync(priv
, &cmd
);
6689 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
6690 IWL_SCAN_CHECK_WATCHDOG
);
6692 mutex_unlock(&priv
->mutex
);
6696 /* inform mac80211 sacn aborted */
6697 queue_work(priv
->workqueue
, &priv
->scan_completed
);
6698 mutex_unlock(&priv
->mutex
);
6701 static void iwl_bg_up(struct work_struct
*data
)
6703 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
6705 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6708 mutex_lock(&priv
->mutex
);
6710 mutex_unlock(&priv
->mutex
);
6713 static void iwl_bg_restart(struct work_struct
*data
)
6715 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
6717 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6721 queue_work(priv
->workqueue
, &priv
->up
);
6724 static void iwl_bg_rx_replenish(struct work_struct
*data
)
6726 struct iwl_priv
*priv
=
6727 container_of(data
, struct iwl_priv
, rx_replenish
);
6729 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6732 mutex_lock(&priv
->mutex
);
6733 iwl_rx_replenish(priv
);
6734 mutex_unlock(&priv
->mutex
);
6737 static void iwl_bg_post_associate(struct work_struct
*data
)
6739 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
6740 post_associate
.work
);
6743 struct ieee80211_conf
*conf
= NULL
;
6744 DECLARE_MAC_BUF(mac
);
6746 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
6747 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
6752 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6754 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
6756 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6759 mutex_lock(&priv
->mutex
);
6761 if (!priv
->interface_id
|| !priv
->is_open
) {
6762 mutex_unlock(&priv
->mutex
);
6765 iwl_scan_cancel_timeout(priv
, 200);
6767 conf
= ieee80211_get_hw_conf(priv
->hw
);
6769 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6770 iwl_commit_rxon(priv
);
6772 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
6773 iwl_setup_rxon_timing(priv
);
6774 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
6775 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
6777 IWL_WARNING("REPLY_RXON_TIMING failed - "
6778 "Attempting to continue.\n");
6780 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
6782 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
6784 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6785 priv
->assoc_id
, priv
->beacon_int
);
6787 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
6788 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
6790 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6792 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
6793 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
6794 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
6796 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
6798 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
6799 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
6803 iwl_commit_rxon(priv
);
6805 switch (priv
->iw_mode
) {
6806 case IEEE80211_IF_TYPE_STA
:
6807 iwl_rate_scale_init(priv
->hw
, IWL_AP_ID
);
6810 case IEEE80211_IF_TYPE_IBSS
:
6812 /* clear out the station table */
6813 iwl_clear_stations_table(priv
);
6815 iwl_add_station(priv
, BROADCAST_ADDR
, 0, 0);
6816 iwl_add_station(priv
, priv
->bssid
, 0, 0);
6817 iwl3945_sync_sta(priv
, IWL_STA_ID
,
6818 (priv
->phymode
== MODE_IEEE80211A
)?
6819 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
,
6821 iwl_rate_scale_init(priv
->hw
, IWL_STA_ID
);
6822 iwl_send_beacon_cmd(priv
);
6827 IWL_ERROR("%s Should not be called in %d mode\n",
6828 __FUNCTION__
, priv
->iw_mode
);
6832 iwl_sequence_reset(priv
);
6834 #ifdef CONFIG_IWLWIFI_QOS
6835 iwl_activate_qos(priv
, 0);
6836 #endif /* CONFIG_IWLWIFI_QOS */
6837 mutex_unlock(&priv
->mutex
);
6840 static void iwl_bg_abort_scan(struct work_struct
*work
)
6842 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
6845 if (!iwl_is_ready(priv
))
6848 mutex_lock(&priv
->mutex
);
6850 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
6851 iwl_send_scan_abort(priv
);
6853 mutex_unlock(&priv
->mutex
);
6856 static void iwl_bg_scan_completed(struct work_struct
*work
)
6858 struct iwl_priv
*priv
=
6859 container_of(work
, struct iwl_priv
, scan_completed
);
6861 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
6863 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6866 ieee80211_scan_completed(priv
->hw
);
6868 /* Since setting the TXPOWER may have been deferred while
6869 * performing the scan, fire one off */
6870 mutex_lock(&priv
->mutex
);
6871 iwl_hw_reg_send_txpower(priv
);
6872 mutex_unlock(&priv
->mutex
);
6875 /*****************************************************************************
6877 * mac80211 entry point functions
6879 *****************************************************************************/
6881 static int iwl_mac_start(struct ieee80211_hw
*hw
)
6883 struct iwl_priv
*priv
= hw
->priv
;
6885 IWL_DEBUG_MAC80211("enter\n");
6887 /* we should be verifying the device is ready to be opened */
6888 mutex_lock(&priv
->mutex
);
6892 if (!iwl_is_rfkill(priv
))
6893 ieee80211_start_queues(priv
->hw
);
6895 mutex_unlock(&priv
->mutex
);
6896 IWL_DEBUG_MAC80211("leave\n");
6900 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
6902 struct iwl_priv
*priv
= hw
->priv
;
6904 IWL_DEBUG_MAC80211("enter\n");
6907 mutex_lock(&priv
->mutex
);
6908 /* stop mac, cancel any scan request and clear
6909 * RXON_FILTER_ASSOC_MSK BIT
6912 iwl_scan_cancel_timeout(priv
, 100);
6913 cancel_delayed_work(&priv
->post_associate
);
6914 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6915 iwl_commit_rxon(priv
);
6916 mutex_unlock(&priv
->mutex
);
6918 IWL_DEBUG_MAC80211("leave\n");
6921 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
6922 struct ieee80211_tx_control
*ctl
)
6924 struct iwl_priv
*priv
= hw
->priv
;
6926 IWL_DEBUG_MAC80211("enter\n");
6928 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
6929 IWL_DEBUG_MAC80211("leave - monitor\n");
6933 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
6936 if (iwl_tx_skb(priv
, skb
, ctl
))
6937 dev_kfree_skb_any(skb
);
6939 IWL_DEBUG_MAC80211("leave\n");
6943 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
6944 struct ieee80211_if_init_conf
*conf
)
6946 struct iwl_priv
*priv
= hw
->priv
;
6947 unsigned long flags
;
6948 DECLARE_MAC_BUF(mac
);
6950 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf
->if_id
, conf
->type
);
6952 if (priv
->interface_id
) {
6953 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
6957 spin_lock_irqsave(&priv
->lock
, flags
);
6958 priv
->interface_id
= conf
->if_id
;
6960 spin_unlock_irqrestore(&priv
->lock
, flags
);
6962 mutex_lock(&priv
->mutex
);
6964 if (conf
->mac_addr
) {
6965 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac
, conf
->mac_addr
));
6966 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
6969 iwl_set_mode(priv
, conf
->type
);
6971 IWL_DEBUG_MAC80211("leave\n");
6972 mutex_unlock(&priv
->mutex
);
6978 * iwl_mac_config - mac80211 config callback
6980 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6981 * be set inappropriately and the driver currently sets the hardware up to
6982 * use it whenever needed.
6984 static int iwl_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
6986 struct iwl_priv
*priv
= hw
->priv
;
6987 const struct iwl_channel_info
*ch_info
;
6988 unsigned long flags
;
6990 mutex_lock(&priv
->mutex
);
6991 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
);
6993 if (!iwl_is_ready(priv
)) {
6994 IWL_DEBUG_MAC80211("leave - not ready\n");
6995 mutex_unlock(&priv
->mutex
);
6999 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7000 * what is exposed through include/ declrations */
7001 if (unlikely(!iwl_param_disable_hw_scan
&&
7002 test_bit(STATUS_SCANNING
, &priv
->status
))) {
7003 IWL_DEBUG_MAC80211("leave - scanning\n");
7004 mutex_unlock(&priv
->mutex
);
7008 spin_lock_irqsave(&priv
->lock
, flags
);
7010 ch_info
= iwl_get_channel_info(priv
, conf
->phymode
, conf
->channel
);
7011 if (!is_channel_valid(ch_info
)) {
7012 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7013 conf
->channel
, conf
->phymode
);
7014 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7015 spin_unlock_irqrestore(&priv
->lock
, flags
);
7016 mutex_unlock(&priv
->mutex
);
7020 iwl_set_rxon_channel(priv
, conf
->phymode
, conf
->channel
);
7022 iwl_set_flags_for_phymode(priv
, conf
->phymode
);
7024 /* The list of supported rates and rate mask can be different
7025 * for each phymode; since the phymode may have changed, reset
7026 * the rate mask to what mac80211 lists */
7029 spin_unlock_irqrestore(&priv
->lock
, flags
);
7031 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7032 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
7033 iwl_hw_channel_switch(priv
, conf
->channel
);
7034 mutex_unlock(&priv
->mutex
);
7039 iwl_radio_kill_sw(priv
, !conf
->radio_enabled
);
7041 if (!conf
->radio_enabled
) {
7042 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7043 mutex_unlock(&priv
->mutex
);
7047 if (iwl_is_rfkill(priv
)) {
7048 IWL_DEBUG_MAC80211("leave - RF kill\n");
7049 mutex_unlock(&priv
->mutex
);
7055 if (memcmp(&priv
->active_rxon
,
7056 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
7057 iwl_commit_rxon(priv
);
7059 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7061 IWL_DEBUG_MAC80211("leave\n");
7063 mutex_unlock(&priv
->mutex
);
7068 static void iwl_config_ap(struct iwl_priv
*priv
)
7072 if (priv
->status
& STATUS_EXIT_PENDING
)
7075 /* The following should be done only at AP bring up */
7076 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
7078 /* RXON - unassoc (to set timing command) */
7079 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7080 iwl_commit_rxon(priv
);
7083 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
7084 iwl_setup_rxon_timing(priv
);
7085 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
7086 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
7088 IWL_WARNING("REPLY_RXON_TIMING failed - "
7089 "Attempting to continue.\n");
7091 /* FIXME: what should be the assoc_id for AP? */
7092 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
7093 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
7094 priv
->staging_rxon
.flags
|=
7095 RXON_FLG_SHORT_PREAMBLE_MSK
;
7097 priv
->staging_rxon
.flags
&=
7098 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
7100 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
7101 if (priv
->assoc_capability
&
7102 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
7103 priv
->staging_rxon
.flags
|=
7104 RXON_FLG_SHORT_SLOT_MSK
;
7106 priv
->staging_rxon
.flags
&=
7107 ~RXON_FLG_SHORT_SLOT_MSK
;
7109 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
7110 priv
->staging_rxon
.flags
&=
7111 ~RXON_FLG_SHORT_SLOT_MSK
;
7113 /* restore RXON assoc */
7114 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
7115 iwl_commit_rxon(priv
);
7116 iwl_add_station(priv
, BROADCAST_ADDR
, 0, 0);
7118 iwl_send_beacon_cmd(priv
);
7120 /* FIXME - we need to add code here to detect a totally new
7121 * configuration, reset the AP, unassoc, rxon timing, assoc,
7122 * clear sta table, add BCAST sta... */
7125 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
, int if_id
,
7126 struct ieee80211_if_conf
*conf
)
7128 struct iwl_priv
*priv
= hw
->priv
;
7129 DECLARE_MAC_BUF(mac
);
7130 unsigned long flags
;
7136 /* XXX: this MUST use conf->mac_addr */
7138 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
7139 (!conf
->beacon
|| !conf
->ssid_len
)) {
7141 ("Leaving in AP mode because HostAPD is not ready.\n");
7145 mutex_lock(&priv
->mutex
);
7147 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id
);
7149 IWL_DEBUG_MAC80211("bssid: %s\n",
7150 print_mac(mac
, conf
->bssid
));
7153 * very dubious code was here; the probe filtering flag is never set:
7155 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7156 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7158 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
7159 IWL_DEBUG_MAC80211("leave - scanning\n");
7160 mutex_unlock(&priv
->mutex
);
7164 if (priv
->interface_id
!= if_id
) {
7165 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7166 mutex_unlock(&priv
->mutex
);
7170 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
7172 conf
->bssid
= priv
->mac_addr
;
7173 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
7174 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7175 print_mac(mac
, conf
->bssid
));
7177 if (priv
->ibss_beacon
)
7178 dev_kfree_skb(priv
->ibss_beacon
);
7180 priv
->ibss_beacon
= conf
->beacon
;
7183 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
7184 !is_multicast_ether_addr(conf
->bssid
)) {
7185 /* If there is currently a HW scan going on in the background
7186 * then we need to cancel it else the RXON below will fail. */
7187 if (iwl_scan_cancel_timeout(priv
, 100)) {
7188 IWL_WARNING("Aborted scan still in progress "
7190 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7191 mutex_unlock(&priv
->mutex
);
7194 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
7196 /* TODO: Audit driver for usage of these members and see
7197 * if mac80211 deprecates them (priv->bssid looks like it
7198 * shouldn't be there, but I haven't scanned the IBSS code
7199 * to verify) - jpk */
7200 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
7202 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7203 iwl_config_ap(priv
);
7205 rc
= iwl_commit_rxon(priv
);
7206 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
7207 iwl_add_station(priv
,
7208 priv
->active_rxon
.bssid_addr
, 1, 0);
7212 iwl_scan_cancel_timeout(priv
, 100);
7213 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7214 iwl_commit_rxon(priv
);
7217 spin_lock_irqsave(&priv
->lock
, flags
);
7218 if (!conf
->ssid_len
)
7219 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7221 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
7223 priv
->essid_len
= conf
->ssid_len
;
7224 spin_unlock_irqrestore(&priv
->lock
, flags
);
7226 IWL_DEBUG_MAC80211("leave\n");
7227 mutex_unlock(&priv
->mutex
);
7232 static void iwl_configure_filter(struct ieee80211_hw
*hw
,
7233 unsigned int changed_flags
,
7234 unsigned int *total_flags
,
7235 int mc_count
, struct dev_addr_list
*mc_list
)
7239 * see also iwl_connection_init_rx_config
7244 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
7245 struct ieee80211_if_init_conf
*conf
)
7247 struct iwl_priv
*priv
= hw
->priv
;
7249 IWL_DEBUG_MAC80211("enter\n");
7251 mutex_lock(&priv
->mutex
);
7253 iwl_scan_cancel_timeout(priv
, 100);
7254 cancel_delayed_work(&priv
->post_associate
);
7255 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7256 iwl_commit_rxon(priv
);
7258 if (priv
->interface_id
== conf
->if_id
) {
7259 priv
->interface_id
= 0;
7260 memset(priv
->bssid
, 0, ETH_ALEN
);
7261 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
7262 priv
->essid_len
= 0;
7264 mutex_unlock(&priv
->mutex
);
7266 IWL_DEBUG_MAC80211("leave\n");
7270 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7271 static int iwl_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
7274 unsigned long flags
;
7275 struct iwl_priv
*priv
= hw
->priv
;
7277 IWL_DEBUG_MAC80211("enter\n");
7279 mutex_lock(&priv
->mutex
);
7280 spin_lock_irqsave(&priv
->lock
, flags
);
7282 if (!iwl_is_ready_rf(priv
)) {
7284 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7288 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
7290 IWL_ERROR("ERROR: APs don't scan\n");
7294 /* if we just finished scan ask for delay */
7295 if (priv
->last_scan_jiffies
&&
7296 time_after(priv
->last_scan_jiffies
+ IWL_DELAY_NEXT_SCAN
,
7302 IWL_DEBUG_SCAN("direct scan for "
7304 iwl_escape_essid(ssid
, len
), (int)len
);
7306 priv
->one_direct_scan
= 1;
7307 priv
->direct_ssid_len
= (u8
)
7308 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
7309 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
7311 priv
->one_direct_scan
= 0;
7313 rc
= iwl_scan_initiate(priv
);
7315 IWL_DEBUG_MAC80211("leave\n");
7318 spin_unlock_irqrestore(&priv
->lock
, flags
);
7319 mutex_unlock(&priv
->mutex
);
7324 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
7325 const u8
*local_addr
, const u8
*addr
,
7326 struct ieee80211_key_conf
*key
)
7328 struct iwl_priv
*priv
= hw
->priv
;
7332 IWL_DEBUG_MAC80211("enter\n");
7334 if (!iwl_param_hwcrypto
) {
7335 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7339 if (is_zero_ether_addr(addr
))
7340 /* only support pairwise keys */
7343 sta_id
= iwl_hw_find_station(priv
, addr
);
7344 if (sta_id
== IWL_INVALID_STATION
) {
7345 DECLARE_MAC_BUF(mac
);
7347 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7348 print_mac(mac
, addr
));
7352 mutex_lock(&priv
->mutex
);
7354 iwl_scan_cancel_timeout(priv
, 100);
7358 rc
= iwl_update_sta_key_info(priv
, key
, sta_id
);
7360 iwl_set_rxon_hwcrypto(priv
, 1);
7361 iwl_commit_rxon(priv
);
7362 key
->hw_key_idx
= sta_id
;
7363 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7364 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
7368 rc
= iwl_clear_sta_key_info(priv
, sta_id
);
7370 iwl_set_rxon_hwcrypto(priv
, 0);
7371 iwl_commit_rxon(priv
);
7372 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7379 IWL_DEBUG_MAC80211("leave\n");
7380 mutex_unlock(&priv
->mutex
);
7385 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7386 const struct ieee80211_tx_queue_params
*params
)
7388 struct iwl_priv
*priv
= hw
->priv
;
7389 #ifdef CONFIG_IWLWIFI_QOS
7390 unsigned long flags
;
7392 #endif /* CONFIG_IWL_QOS */
7394 IWL_DEBUG_MAC80211("enter\n");
7396 if (!iwl_is_ready_rf(priv
)) {
7397 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7401 if (queue
>= AC_NUM
) {
7402 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7406 #ifdef CONFIG_IWLWIFI_QOS
7407 if (!priv
->qos_data
.qos_enable
) {
7408 priv
->qos_data
.qos_active
= 0;
7409 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7412 q
= AC_NUM
- 1 - queue
;
7414 spin_lock_irqsave(&priv
->lock
, flags
);
7416 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7417 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7418 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7419 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7420 cpu_to_le16((params
->burst_time
* 100));
7422 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7423 priv
->qos_data
.qos_active
= 1;
7425 spin_unlock_irqrestore(&priv
->lock
, flags
);
7427 mutex_lock(&priv
->mutex
);
7428 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7429 iwl_activate_qos(priv
, 1);
7430 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7431 iwl_activate_qos(priv
, 0);
7433 mutex_unlock(&priv
->mutex
);
7435 #endif /*CONFIG_IWLWIFI_QOS */
7437 IWL_DEBUG_MAC80211("leave\n");
7441 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7442 struct ieee80211_tx_queue_stats
*stats
)
7444 struct iwl_priv
*priv
= hw
->priv
;
7446 struct iwl_tx_queue
*txq
;
7447 struct iwl_queue
*q
;
7448 unsigned long flags
;
7450 IWL_DEBUG_MAC80211("enter\n");
7452 if (!iwl_is_ready_rf(priv
)) {
7453 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7457 spin_lock_irqsave(&priv
->lock
, flags
);
7459 for (i
= 0; i
< AC_NUM
; i
++) {
7460 txq
= &priv
->txq
[i
];
7462 avail
= iwl_queue_space(q
);
7464 stats
->data
[i
].len
= q
->n_window
- avail
;
7465 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7466 stats
->data
[i
].count
= q
->n_window
;
7469 spin_unlock_irqrestore(&priv
->lock
, flags
);
7471 IWL_DEBUG_MAC80211("leave\n");
7476 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
7477 struct ieee80211_low_level_stats
*stats
)
7479 IWL_DEBUG_MAC80211("enter\n");
7480 IWL_DEBUG_MAC80211("leave\n");
7485 static u64
iwl_mac_get_tsf(struct ieee80211_hw
*hw
)
7487 IWL_DEBUG_MAC80211("enter\n");
7488 IWL_DEBUG_MAC80211("leave\n");
7493 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
7495 struct iwl_priv
*priv
= hw
->priv
;
7496 unsigned long flags
;
7498 mutex_lock(&priv
->mutex
);
7499 IWL_DEBUG_MAC80211("enter\n");
7501 #ifdef CONFIG_IWLWIFI_QOS
7502 iwl_reset_qos(priv
);
7504 cancel_delayed_work(&priv
->post_associate
);
7506 spin_lock_irqsave(&priv
->lock
, flags
);
7508 priv
->assoc_capability
= 0;
7509 priv
->call_post_assoc_from_beacon
= 0;
7511 /* new association get rid of ibss beacon skb */
7512 if (priv
->ibss_beacon
)
7513 dev_kfree_skb(priv
->ibss_beacon
);
7515 priv
->ibss_beacon
= NULL
;
7517 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7518 priv
->timestamp1
= 0;
7519 priv
->timestamp0
= 0;
7520 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7521 priv
->beacon_int
= 0;
7523 spin_unlock_irqrestore(&priv
->lock
, flags
);
7525 /* we are restarting association process
7526 * clear RXON_FILTER_ASSOC_MSK bit
7528 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
7529 iwl_scan_cancel_timeout(priv
, 100);
7530 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7531 iwl_commit_rxon(priv
);
7534 /* Per mac80211.h: This is only used in IBSS mode... */
7535 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7537 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7538 mutex_unlock(&priv
->mutex
);
7542 if (!iwl_is_ready_rf(priv
)) {
7543 IWL_DEBUG_MAC80211("leave - not ready\n");
7544 mutex_unlock(&priv
->mutex
);
7548 priv
->only_active_channel
= 0;
7552 mutex_unlock(&priv
->mutex
);
7554 IWL_DEBUG_MAC80211("leave\n");
7558 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7559 struct ieee80211_tx_control
*control
)
7561 struct iwl_priv
*priv
= hw
->priv
;
7562 unsigned long flags
;
7564 mutex_lock(&priv
->mutex
);
7565 IWL_DEBUG_MAC80211("enter\n");
7567 if (!iwl_is_ready_rf(priv
)) {
7568 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7569 mutex_unlock(&priv
->mutex
);
7573 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7574 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7575 mutex_unlock(&priv
->mutex
);
7579 spin_lock_irqsave(&priv
->lock
, flags
);
7581 if (priv
->ibss_beacon
)
7582 dev_kfree_skb(priv
->ibss_beacon
);
7584 priv
->ibss_beacon
= skb
;
7588 IWL_DEBUG_MAC80211("leave\n");
7589 spin_unlock_irqrestore(&priv
->lock
, flags
);
7591 #ifdef CONFIG_IWLWIFI_QOS
7592 iwl_reset_qos(priv
);
7595 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
7597 mutex_unlock(&priv
->mutex
);
7602 /*****************************************************************************
7606 *****************************************************************************/
7608 #ifdef CONFIG_IWLWIFI_DEBUG
7611 * The following adds a new attribute to the sysfs representation
7612 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7613 * used for controlling the debug level.
7615 * See the level definitions in iwl for details.
7618 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
7620 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
7622 static ssize_t
store_debug_level(struct device_driver
*d
,
7623 const char *buf
, size_t count
)
7625 char *p
= (char *)buf
;
7628 val
= simple_strtoul(p
, &p
, 0);
7630 printk(KERN_INFO DRV_NAME
7631 ": %s is not in hex or decimal form.\n", buf
);
7633 iwl_debug_level
= val
;
7635 return strnlen(buf
, count
);
7638 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
7639 show_debug_level
, store_debug_level
);
7641 #endif /* CONFIG_IWLWIFI_DEBUG */
7643 static ssize_t
show_rf_kill(struct device
*d
,
7644 struct device_attribute
*attr
, char *buf
)
7647 * 0 - RF kill not enabled
7648 * 1 - SW based RF kill active (sysfs)
7649 * 2 - HW based RF kill active
7650 * 3 - Both HW and SW based RF kill active
7652 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7653 int val
= (test_bit(STATUS_RF_KILL_SW
, &priv
->status
) ? 0x1 : 0x0) |
7654 (test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? 0x2 : 0x0);
7656 return sprintf(buf
, "%i\n", val
);
7659 static ssize_t
store_rf_kill(struct device
*d
,
7660 struct device_attribute
*attr
,
7661 const char *buf
, size_t count
)
7663 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7665 mutex_lock(&priv
->mutex
);
7666 iwl_radio_kill_sw(priv
, buf
[0] == '1');
7667 mutex_unlock(&priv
->mutex
);
7672 static DEVICE_ATTR(rf_kill
, S_IWUSR
| S_IRUGO
, show_rf_kill
, store_rf_kill
);
7674 static ssize_t
show_temperature(struct device
*d
,
7675 struct device_attribute
*attr
, char *buf
)
7677 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7679 if (!iwl_is_alive(priv
))
7682 return sprintf(buf
, "%d\n", iwl_hw_get_temperature(priv
));
7685 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
7687 static ssize_t
show_rs_window(struct device
*d
,
7688 struct device_attribute
*attr
,
7691 struct iwl_priv
*priv
= d
->driver_data
;
7692 return iwl_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
7694 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
7696 static ssize_t
show_tx_power(struct device
*d
,
7697 struct device_attribute
*attr
, char *buf
)
7699 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7700 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
7703 static ssize_t
store_tx_power(struct device
*d
,
7704 struct device_attribute
*attr
,
7705 const char *buf
, size_t count
)
7707 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7708 char *p
= (char *)buf
;
7711 val
= simple_strtoul(p
, &p
, 10);
7713 printk(KERN_INFO DRV_NAME
7714 ": %s is not in decimal form.\n", buf
);
7716 iwl_hw_reg_set_txpower(priv
, val
);
7721 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
7723 static ssize_t
show_flags(struct device
*d
,
7724 struct device_attribute
*attr
, char *buf
)
7726 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7728 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
7731 static ssize_t
store_flags(struct device
*d
,
7732 struct device_attribute
*attr
,
7733 const char *buf
, size_t count
)
7735 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7736 u32 flags
= simple_strtoul(buf
, NULL
, 0);
7738 mutex_lock(&priv
->mutex
);
7739 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
7740 /* Cancel any currently running scans... */
7741 if (iwl_scan_cancel_timeout(priv
, 100))
7742 IWL_WARNING("Could not cancel scan.\n");
7744 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7746 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
7747 iwl_commit_rxon(priv
);
7750 mutex_unlock(&priv
->mutex
);
7755 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
7757 static ssize_t
show_filter_flags(struct device
*d
,
7758 struct device_attribute
*attr
, char *buf
)
7760 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7762 return sprintf(buf
, "0x%04X\n",
7763 le32_to_cpu(priv
->active_rxon
.filter_flags
));
7766 static ssize_t
store_filter_flags(struct device
*d
,
7767 struct device_attribute
*attr
,
7768 const char *buf
, size_t count
)
7770 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7771 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
7773 mutex_lock(&priv
->mutex
);
7774 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
7775 /* Cancel any currently running scans... */
7776 if (iwl_scan_cancel_timeout(priv
, 100))
7777 IWL_WARNING("Could not cancel scan.\n");
7779 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7780 "0x%04X\n", filter_flags
);
7781 priv
->staging_rxon
.filter_flags
=
7782 cpu_to_le32(filter_flags
);
7783 iwl_commit_rxon(priv
);
7786 mutex_unlock(&priv
->mutex
);
7791 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
7792 store_filter_flags
);
7794 static ssize_t
show_tune(struct device
*d
,
7795 struct device_attribute
*attr
, char *buf
)
7797 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7799 return sprintf(buf
, "0x%04X\n",
7800 (priv
->phymode
<< 8) |
7801 le16_to_cpu(priv
->active_rxon
.channel
));
7804 static void iwl_set_flags_for_phymode(struct iwl_priv
*priv
, u8 phymode
);
7806 static ssize_t
store_tune(struct device
*d
,
7807 struct device_attribute
*attr
,
7808 const char *buf
, size_t count
)
7810 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7811 char *p
= (char *)buf
;
7812 u16 tune
= simple_strtoul(p
, &p
, 0);
7813 u8 phymode
= (tune
>> 8) & 0xff;
7814 u16 channel
= tune
& 0xff;
7816 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode
, channel
);
7818 mutex_lock(&priv
->mutex
);
7819 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
) ||
7820 (priv
->phymode
!= phymode
)) {
7821 const struct iwl_channel_info
*ch_info
;
7823 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
7825 IWL_WARNING("Requested invalid phymode/channel "
7826 "combination: %d %d\n", phymode
, channel
);
7827 mutex_unlock(&priv
->mutex
);
7831 /* Cancel any currently running scans... */
7832 if (iwl_scan_cancel_timeout(priv
, 100))
7833 IWL_WARNING("Could not cancel scan.\n");
7835 IWL_DEBUG_INFO("Committing phymode and "
7836 "rxon.channel = %d %d\n",
7839 iwl_set_rxon_channel(priv
, phymode
, channel
);
7840 iwl_set_flags_for_phymode(priv
, phymode
);
7843 iwl_commit_rxon(priv
);
7846 mutex_unlock(&priv
->mutex
);
7851 static DEVICE_ATTR(tune
, S_IWUSR
| S_IRUGO
, show_tune
, store_tune
);
7853 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
7855 static ssize_t
show_measurement(struct device
*d
,
7856 struct device_attribute
*attr
, char *buf
)
7858 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7859 struct iwl_spectrum_notification measure_report
;
7860 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
7861 u8
*data
= (u8
*) & measure_report
;
7862 unsigned long flags
;
7864 spin_lock_irqsave(&priv
->lock
, flags
);
7865 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
7866 spin_unlock_irqrestore(&priv
->lock
, flags
);
7869 memcpy(&measure_report
, &priv
->measure_report
, size
);
7870 priv
->measurement_status
= 0;
7871 spin_unlock_irqrestore(&priv
->lock
, flags
);
7873 while (size
&& (PAGE_SIZE
- len
)) {
7874 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
7875 PAGE_SIZE
- len
, 1);
7877 if (PAGE_SIZE
- len
)
7881 size
-= min(size
, 16U);
7887 static ssize_t
store_measurement(struct device
*d
,
7888 struct device_attribute
*attr
,
7889 const char *buf
, size_t count
)
7891 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7892 struct ieee80211_measurement_params params
= {
7893 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
7894 .start_time
= cpu_to_le64(priv
->last_tsf
),
7895 .duration
= cpu_to_le16(1),
7897 u8 type
= IWL_MEASURE_BASIC
;
7903 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
7904 channel
= simple_strtoul(p
, NULL
, 0);
7906 params
.channel
= channel
;
7909 while (*p
&& *p
!= ' ')
7912 type
= simple_strtoul(p
+ 1, NULL
, 0);
7915 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7916 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
7917 iwl_get_measurement(priv
, ¶ms
, type
);
7922 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
7923 show_measurement
, store_measurement
);
7924 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
7926 static ssize_t
show_rate(struct device
*d
,
7927 struct device_attribute
*attr
, char *buf
)
7929 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7930 unsigned long flags
;
7933 spin_lock_irqsave(&priv
->sta_lock
, flags
);
7934 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
7935 i
= priv
->stations
[IWL_AP_ID
].current_rate
.s
.rate
;
7937 i
= priv
->stations
[IWL_STA_ID
].current_rate
.s
.rate
;
7938 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
7940 i
= iwl_rate_index_from_plcp(i
);
7942 return sprintf(buf
, "0\n");
7944 return sprintf(buf
, "%d%s\n",
7945 (iwl_rates
[i
].ieee
>> 1),
7946 (iwl_rates
[i
].ieee
& 0x1) ? ".5" : "");
7949 static DEVICE_ATTR(rate
, S_IRUSR
, show_rate
, NULL
);
7951 static ssize_t
store_retry_rate(struct device
*d
,
7952 struct device_attribute
*attr
,
7953 const char *buf
, size_t count
)
7955 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7957 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
7958 if (priv
->retry_rate
<= 0)
7959 priv
->retry_rate
= 1;
7964 static ssize_t
show_retry_rate(struct device
*d
,
7965 struct device_attribute
*attr
, char *buf
)
7967 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7968 return sprintf(buf
, "%d", priv
->retry_rate
);
7971 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
7974 static ssize_t
store_power_level(struct device
*d
,
7975 struct device_attribute
*attr
,
7976 const char *buf
, size_t count
)
7978 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7982 mode
= simple_strtoul(buf
, NULL
, 0);
7983 mutex_lock(&priv
->mutex
);
7985 if (!iwl_is_ready(priv
)) {
7990 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
7991 mode
= IWL_POWER_AC
;
7993 mode
|= IWL_POWER_ENABLED
;
7995 if (mode
!= priv
->power_mode
) {
7996 rc
= iwl_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
7998 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8001 priv
->power_mode
= mode
;
8007 mutex_unlock(&priv
->mutex
);
8011 #define MAX_WX_STRING 80
8013 /* Values are in microsecond */
8014 static const s32 timeout_duration
[] = {
8021 static const s32 period_duration
[] = {
8029 static ssize_t
show_power_level(struct device
*d
,
8030 struct device_attribute
*attr
, char *buf
)
8032 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8033 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
8036 p
+= sprintf(p
, "%d ", level
);
8038 case IWL_POWER_MODE_CAM
:
8040 p
+= sprintf(p
, "(AC)");
8042 case IWL_POWER_BATTERY
:
8043 p
+= sprintf(p
, "(BATTERY)");
8047 "(Timeout %dms, Period %dms)",
8048 timeout_duration
[level
- 1] / 1000,
8049 period_duration
[level
- 1] / 1000);
8052 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
8053 p
+= sprintf(p
, " OFF\n");
8055 p
+= sprintf(p
, " \n");
8057 return (p
- buf
+ 1);
8061 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
8064 static ssize_t
show_channels(struct device
*d
,
8065 struct device_attribute
*attr
, char *buf
)
8067 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8069 struct ieee80211_channel
*channels
= NULL
;
8070 const struct ieee80211_hw_mode
*hw_mode
= NULL
;
8073 if (!iwl_is_ready(priv
))
8076 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211G
);
8078 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211B
);
8080 channels
= hw_mode
->channels
;
8081 count
= hw_mode
->num_channels
;
8086 "Displaying %d channels in 2.4GHz band "
8087 "(802.11bg):\n", count
);
8089 for (i
= 0; i
< count
; i
++)
8090 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8092 channels
[i
].power_level
,
8094 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8095 " (IEEE 802.11h required)" : "",
8096 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8099 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8102 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8103 "active/passive" : "passive only");
8105 hw_mode
= iwl_get_hw_mode(priv
, MODE_IEEE80211A
);
8107 channels
= hw_mode
->channels
;
8108 count
= hw_mode
->num_channels
;
8114 len
+= sprintf(&buf
[len
], "Displaying %d channels in 5.2GHz band "
8115 "(802.11a):\n", count
);
8117 for (i
= 0; i
< count
; i
++)
8118 len
+= sprintf(&buf
[len
], "%d: %ddBm: BSS%s%s, %s.\n",
8120 channels
[i
].power_level
,
8122 flag
& IEEE80211_CHAN_W_RADAR_DETECT
?
8123 " (IEEE 802.11h required)" : "",
8124 (!(channels
[i
].flag
& IEEE80211_CHAN_W_IBSS
)
8127 IEEE80211_CHAN_W_RADAR_DETECT
)) ? "" :
8130 flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
?
8131 "active/passive" : "passive only");
8136 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
8138 static ssize_t
show_statistics(struct device
*d
,
8139 struct device_attribute
*attr
, char *buf
)
8141 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8142 u32 size
= sizeof(struct iwl_notif_statistics
);
8143 u32 len
= 0, ofs
= 0;
8144 u8
*data
= (u8
*) & priv
->statistics
;
8147 if (!iwl_is_alive(priv
))
8150 mutex_lock(&priv
->mutex
);
8151 rc
= iwl_send_statistics_request(priv
);
8152 mutex_unlock(&priv
->mutex
);
8156 "Error sending statistics request: 0x%08X\n", rc
);
8160 while (size
&& (PAGE_SIZE
- len
)) {
8161 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
8162 PAGE_SIZE
- len
, 1);
8164 if (PAGE_SIZE
- len
)
8168 size
-= min(size
, 16U);
8174 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
8176 static ssize_t
show_antenna(struct device
*d
,
8177 struct device_attribute
*attr
, char *buf
)
8179 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8181 if (!iwl_is_alive(priv
))
8184 return sprintf(buf
, "%d\n", priv
->antenna
);
8187 static ssize_t
store_antenna(struct device
*d
,
8188 struct device_attribute
*attr
,
8189 const char *buf
, size_t count
)
8192 struct iwl_priv
*priv
= dev_get_drvdata(d
);
8197 if (sscanf(buf
, "%1i", &ant
) != 1) {
8198 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8202 if ((ant
>= 0) && (ant
<= 2)) {
8203 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
8204 priv
->antenna
= (enum iwl_antenna
)ant
;
8206 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
8212 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
8214 static ssize_t
show_status(struct device
*d
,
8215 struct device_attribute
*attr
, char *buf
)
8217 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
8218 if (!iwl_is_alive(priv
))
8220 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
8223 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
8225 static ssize_t
dump_error_log(struct device
*d
,
8226 struct device_attribute
*attr
,
8227 const char *buf
, size_t count
)
8229 char *p
= (char *)buf
;
8232 iwl_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
8234 return strnlen(buf
, count
);
8237 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
8239 static ssize_t
dump_event_log(struct device
*d
,
8240 struct device_attribute
*attr
,
8241 const char *buf
, size_t count
)
8243 char *p
= (char *)buf
;
8246 iwl_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
8248 return strnlen(buf
, count
);
8251 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
8253 /*****************************************************************************
8255 * driver setup and teardown
8257 *****************************************************************************/
8259 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
8261 priv
->workqueue
= create_workqueue(DRV_NAME
);
8263 init_waitqueue_head(&priv
->wait_command_queue
);
8265 INIT_WORK(&priv
->up
, iwl_bg_up
);
8266 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
8267 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
8268 INIT_WORK(&priv
->scan_completed
, iwl_bg_scan_completed
);
8269 INIT_WORK(&priv
->request_scan
, iwl_bg_request_scan
);
8270 INIT_WORK(&priv
->abort_scan
, iwl_bg_abort_scan
);
8271 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
8272 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
8273 INIT_DELAYED_WORK(&priv
->post_associate
, iwl_bg_post_associate
);
8274 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
8275 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
8276 INIT_DELAYED_WORK(&priv
->scan_check
, iwl_bg_scan_check
);
8278 iwl_hw_setup_deferred_work(priv
);
8280 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
8281 iwl_irq_tasklet
, (unsigned long)priv
);
8284 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
8286 iwl_hw_cancel_deferred_work(priv
);
8288 cancel_delayed_work_sync(&priv
->init_alive_start
);
8289 cancel_delayed_work(&priv
->scan_check
);
8290 cancel_delayed_work(&priv
->alive_start
);
8291 cancel_delayed_work(&priv
->post_associate
);
8292 cancel_work_sync(&priv
->beacon_update
);
8295 static struct attribute
*iwl_sysfs_entries
[] = {
8296 &dev_attr_antenna
.attr
,
8297 &dev_attr_channels
.attr
,
8298 &dev_attr_dump_errors
.attr
,
8299 &dev_attr_dump_events
.attr
,
8300 &dev_attr_flags
.attr
,
8301 &dev_attr_filter_flags
.attr
,
8302 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8303 &dev_attr_measurement
.attr
,
8305 &dev_attr_power_level
.attr
,
8306 &dev_attr_rate
.attr
,
8307 &dev_attr_retry_rate
.attr
,
8308 &dev_attr_rf_kill
.attr
,
8309 &dev_attr_rs_window
.attr
,
8310 &dev_attr_statistics
.attr
,
8311 &dev_attr_status
.attr
,
8312 &dev_attr_temperature
.attr
,
8313 &dev_attr_tune
.attr
,
8314 &dev_attr_tx_power
.attr
,
8319 static struct attribute_group iwl_attribute_group
= {
8320 .name
= NULL
, /* put in device directory */
8321 .attrs
= iwl_sysfs_entries
,
8324 static struct ieee80211_ops iwl_hw_ops
= {
8326 .start
= iwl_mac_start
,
8327 .stop
= iwl_mac_stop
,
8328 .add_interface
= iwl_mac_add_interface
,
8329 .remove_interface
= iwl_mac_remove_interface
,
8330 .config
= iwl_mac_config
,
8331 .config_interface
= iwl_mac_config_interface
,
8332 .configure_filter
= iwl_configure_filter
,
8333 .set_key
= iwl_mac_set_key
,
8334 .get_stats
= iwl_mac_get_stats
,
8335 .get_tx_stats
= iwl_mac_get_tx_stats
,
8336 .conf_tx
= iwl_mac_conf_tx
,
8337 .get_tsf
= iwl_mac_get_tsf
,
8338 .reset_tsf
= iwl_mac_reset_tsf
,
8339 .beacon_update
= iwl_mac_beacon_update
,
8340 .hw_scan
= iwl_mac_hw_scan
8343 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
8347 struct iwl_priv
*priv
;
8348 struct ieee80211_hw
*hw
;
8351 if (iwl_param_disable_hw_scan
) {
8352 IWL_DEBUG_INFO("Disabling hw_scan\n");
8353 iwl_hw_ops
.hw_scan
= NULL
;
8356 if ((iwl_param_queues_num
> IWL_MAX_NUM_QUEUES
) ||
8357 (iwl_param_queues_num
< IWL_MIN_NUM_QUEUES
)) {
8358 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8359 IWL_MIN_NUM_QUEUES
, IWL_MAX_NUM_QUEUES
);
8364 /* mac80211 allocates memory for this device instance, including
8365 * space for this driver's private structure */
8366 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwl_hw_ops
);
8368 IWL_ERROR("Can not allocate network device\n");
8372 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
8374 hw
->rate_control_algorithm
= "iwl-3945-rs";
8376 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8380 priv
->pci_dev
= pdev
;
8381 priv
->antenna
= (enum iwl_antenna
)iwl_param_antenna
;
8382 #ifdef CONFIG_IWLWIFI_DEBUG
8383 iwl_debug_level
= iwl_param_debug
;
8384 atomic_set(&priv
->restrict_refcnt
, 0);
8386 priv
->retry_rate
= 1;
8388 priv
->ibss_beacon
= NULL
;
8390 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8391 * the range of signal quality values that we'll provide.
8392 * Negative values for level/noise indicate that we'll provide dBm.
8393 * For WE, at least, non-0 values here *enable* display of values
8394 * in app (iwconfig). */
8395 hw
->max_rssi
= -20; /* signal level, negative indicates dBm */
8396 hw
->max_noise
= -20; /* noise level, negative indicates dBm */
8397 hw
->max_signal
= 100; /* link quality indication (%) */
8399 /* Tell mac80211 our Tx characteristics */
8400 hw
->flags
= IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
;
8404 spin_lock_init(&priv
->lock
);
8405 spin_lock_init(&priv
->power_data
.lock
);
8406 spin_lock_init(&priv
->sta_lock
);
8407 spin_lock_init(&priv
->hcmd_lock
);
8409 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
8410 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
8412 INIT_LIST_HEAD(&priv
->free_frames
);
8414 mutex_init(&priv
->mutex
);
8415 if (pci_enable_device(pdev
)) {
8417 goto out_ieee80211_free_hw
;
8420 pci_set_master(pdev
);
8422 iwl_clear_stations_table(priv
);
8424 priv
->data_retry_limit
= -1;
8425 priv
->ieee_channels
= NULL
;
8426 priv
->ieee_rates
= NULL
;
8429 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
8431 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
8433 printk(KERN_WARNING DRV_NAME
": No suitable DMA available.\n");
8434 goto out_pci_disable_device
;
8437 pci_set_drvdata(pdev
, priv
);
8438 err
= pci_request_regions(pdev
, DRV_NAME
);
8440 goto out_pci_disable_device
;
8441 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8442 * PCI Tx retries from interfering with C3 CPU state */
8443 pci_write_config_byte(pdev
, 0x41, 0x00);
8444 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
8445 if (!priv
->hw_base
) {
8447 goto out_pci_release_regions
;
8450 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8451 (unsigned long long) pci_resource_len(pdev
, 0));
8452 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
8454 /* Initialize module parameter values here */
8456 if (iwl_param_disable
) {
8457 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
8458 IWL_DEBUG_INFO("Radio disabled.\n");
8461 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
8464 (priv
->pci_dev
->device
<< 16) | priv
->pci_dev
->subsystem_device
;
8467 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8468 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8469 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8470 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8475 * Rest are assumed ABG SKU -- if this is not the
8476 * case then the card will get the wrong 'Detected'
8477 * line in the kernel log however the code that
8478 * initializes the GEO table will detect no A-band
8479 * channels and remove the is_abg mask.
8486 printk(KERN_INFO DRV_NAME
8487 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8488 priv
->is_abg
? "A" : "");
8490 /* Device-specific setup */
8491 if (iwl_hw_set_hw_setting(priv
)) {
8492 IWL_ERROR("failed to set hw settings\n");
8493 mutex_unlock(&priv
->mutex
);
8497 #ifdef CONFIG_IWLWIFI_QOS
8498 if (iwl_param_qos_enable
)
8499 priv
->qos_data
.qos_enable
= 1;
8501 iwl_reset_qos(priv
);
8503 priv
->qos_data
.qos_active
= 0;
8504 priv
->qos_data
.qos_cap
.val
= 0;
8505 #endif /* CONFIG_IWLWIFI_QOS */
8507 iwl_set_rxon_channel(priv
, MODE_IEEE80211G
, 6);
8508 iwl_setup_deferred_work(priv
);
8509 iwl_setup_rx_handlers(priv
);
8511 priv
->rates_mask
= IWL_RATES_MASK
;
8512 /* If power management is turned on, default to AC mode */
8513 priv
->power_mode
= IWL_POWER_AC
;
8514 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
8516 pci_enable_msi(pdev
);
8518 err
= request_irq(pdev
->irq
, iwl_isr
, IRQF_SHARED
, DRV_NAME
, priv
);
8520 IWL_ERROR("Error allocating IRQ %d\n", pdev
->irq
);
8521 goto out_disable_msi
;
8524 mutex_lock(&priv
->mutex
);
8526 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
8528 IWL_ERROR("failed to create sysfs device attributes\n");
8529 mutex_unlock(&priv
->mutex
);
8530 goto out_release_irq
;
8533 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8534 * ucode filename and max sizes are card-specific. */
8535 err
= iwl_read_ucode(priv
);
8537 IWL_ERROR("Could not read microcode: %d\n", err
);
8538 mutex_unlock(&priv
->mutex
);
8542 mutex_unlock(&priv
->mutex
);
8544 IWL_DEBUG_INFO("Queing UP work.\n");
8546 queue_work(priv
->workqueue
, &priv
->up
);
8551 iwl_dealloc_ucode_pci(priv
);
8553 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
8556 free_irq(pdev
->irq
, priv
);
8559 pci_disable_msi(pdev
);
8560 destroy_workqueue(priv
->workqueue
);
8561 priv
->workqueue
= NULL
;
8562 iwl_unset_hw_setting(priv
);
8565 pci_iounmap(pdev
, priv
->hw_base
);
8566 out_pci_release_regions
:
8567 pci_release_regions(pdev
);
8568 out_pci_disable_device
:
8569 pci_disable_device(pdev
);
8570 pci_set_drvdata(pdev
, NULL
);
8571 out_ieee80211_free_hw
:
8572 ieee80211_free_hw(priv
->hw
);
8577 static void iwl_pci_remove(struct pci_dev
*pdev
)
8579 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8580 struct list_head
*p
, *q
;
8586 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8588 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
8592 /* Free MAC hash list for ADHOC */
8593 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
8594 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
8596 kfree(list_entry(p
, struct iwl_ibss_seq
, list
));
8600 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
8602 iwl_dealloc_ucode_pci(priv
);
8605 iwl_rx_queue_free(priv
, &priv
->rxq
);
8606 iwl_hw_txq_ctx_free(priv
);
8608 iwl_unset_hw_setting(priv
);
8609 iwl_clear_stations_table(priv
);
8611 if (priv
->mac80211_registered
) {
8612 ieee80211_unregister_hw(priv
->hw
);
8613 iwl_rate_control_unregister(priv
->hw
);
8616 /*netif_stop_queue(dev); */
8617 flush_workqueue(priv
->workqueue
);
8619 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
8620 * priv->workqueue... so we can't take down the workqueue
8622 destroy_workqueue(priv
->workqueue
);
8623 priv
->workqueue
= NULL
;
8625 free_irq(pdev
->irq
, priv
);
8626 pci_disable_msi(pdev
);
8627 pci_iounmap(pdev
, priv
->hw_base
);
8628 pci_release_regions(pdev
);
8629 pci_disable_device(pdev
);
8630 pci_set_drvdata(pdev
, NULL
);
8632 kfree(priv
->channel_info
);
8634 kfree(priv
->ieee_channels
);
8635 kfree(priv
->ieee_rates
);
8637 if (priv
->ibss_beacon
)
8638 dev_kfree_skb(priv
->ibss_beacon
);
8640 ieee80211_free_hw(priv
->hw
);
8645 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
8647 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8649 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
8651 /* Take down the device; powers it off, etc. */
8654 if (priv
->mac80211_registered
)
8655 ieee80211_stop_queues(priv
->hw
);
8657 pci_save_state(pdev
);
8658 pci_disable_device(pdev
);
8659 pci_set_power_state(pdev
, PCI_D3hot
);
8664 static void iwl_resume(struct iwl_priv
*priv
)
8666 unsigned long flags
;
8668 /* The following it a temporary work around due to the
8669 * suspend / resume not fully initializing the NIC correctly.
8670 * Without all of the following, resume will not attempt to take
8671 * down the NIC (it shouldn't really need to) and will just try
8672 * and bring the NIC back up. However that fails during the
8673 * ucode verification process. This then causes iwl_down to be
8674 * called *after* iwl_hw_nic_init() has succeeded -- which
8675 * then lets the next init sequence succeed. So, we've
8676 * replicated all of that NIC init code here... */
8678 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
8680 iwl_hw_nic_init(priv
);
8682 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
8683 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
8684 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
8685 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
8686 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
8687 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
8689 /* tell the device to stop sending interrupts */
8690 iwl_disable_interrupts(priv
);
8692 spin_lock_irqsave(&priv
->lock
, flags
);
8693 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
8695 if (!iwl_grab_restricted_access(priv
)) {
8696 iwl_write_restricted_reg(priv
, APMG_CLK_DIS_REG
,
8697 APMG_CLK_VAL_DMA_CLK_RQT
);
8698 iwl_release_restricted_access(priv
);
8700 spin_unlock_irqrestore(&priv
->lock
, flags
);
8704 iwl_hw_nic_reset(priv
);
8706 /* Bring the device back up */
8707 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
8708 queue_work(priv
->workqueue
, &priv
->up
);
8711 static int iwl_pci_resume(struct pci_dev
*pdev
)
8713 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8716 printk(KERN_INFO
"Coming out of suspend...\n");
8718 pci_set_power_state(pdev
, PCI_D0
);
8719 err
= pci_enable_device(pdev
);
8720 pci_restore_state(pdev
);
8723 * Suspend/Resume resets the PCI configuration space, so we have to
8724 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8725 * from interfering with C3 CPU state. pci_restore_state won't help
8726 * here since it only restores the first 64 bytes pci config header.
8728 pci_write_config_byte(pdev
, 0x41, 0x00);
8735 #endif /* CONFIG_PM */
8737 /*****************************************************************************
8739 * driver and module entry point
8741 *****************************************************************************/
8743 static struct pci_driver iwl_driver
= {
8745 .id_table
= iwl_hw_card_ids
,
8746 .probe
= iwl_pci_probe
,
8747 .remove
= __devexit_p(iwl_pci_remove
),
8749 .suspend
= iwl_pci_suspend
,
8750 .resume
= iwl_pci_resume
,
8754 static int __init
iwl_init(void)
8758 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
8759 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
8760 ret
= pci_register_driver(&iwl_driver
);
8762 IWL_ERROR("Unable to initialize PCI module\n");
8765 #ifdef CONFIG_IWLWIFI_DEBUG
8766 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
8768 IWL_ERROR("Unable to create driver sysfs file\n");
8769 pci_unregister_driver(&iwl_driver
);
8777 static void __exit
iwl_exit(void)
8779 #ifdef CONFIG_IWLWIFI_DEBUG
8780 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
8782 pci_unregister_driver(&iwl_driver
);
8785 module_param_named(antenna
, iwl_param_antenna
, int, 0444);
8786 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
8787 module_param_named(disable
, iwl_param_disable
, int, 0444);
8788 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
8789 module_param_named(hwcrypto
, iwl_param_hwcrypto
, int, 0444);
8790 MODULE_PARM_DESC(hwcrypto
,
8791 "using hardware crypto engine (default 0 [software])\n");
8792 module_param_named(debug
, iwl_param_debug
, int, 0444);
8793 MODULE_PARM_DESC(debug
, "debug output mask");
8794 module_param_named(disable_hw_scan
, iwl_param_disable_hw_scan
, int, 0444);
8795 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
8797 module_param_named(queues_num
, iwl_param_queues_num
, int, 0444);
8798 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
8801 module_param_named(qos_enable
, iwl_param_qos_enable
, int, 0444);
8802 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
8804 module_exit(iwl_exit
);
8805 module_init(iwl_init
);