1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 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 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/mac80211.h>
46 #include <asm/div64.h>
48 #include "iwl-eeprom.h"
52 #include "iwl-helpers.h"
54 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
55 struct iwl4965_tx_queue
*txq
);
57 /******************************************************************************
61 ******************************************************************************/
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
70 #ifdef CONFIG_IWLWIFI_DEBUG
76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
85 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
86 MODULE_VERSION(DRV_VERSION
);
87 MODULE_AUTHOR(DRV_COPYRIGHT
);
88 MODULE_LICENSE("GPL");
90 __le16
*ieee80211_get_qos_ctrl(struct ieee80211_hdr
*hdr
)
92 u16 fc
= le16_to_cpu(hdr
->frame_control
);
93 int hdr_len
= ieee80211_get_hdrlen(fc
);
95 if ((fc
& 0x00cc) == (IEEE80211_STYPE_QOS_DATA
| IEEE80211_FTYPE_DATA
))
96 return (__le16
*) ((u8
*) hdr
+ hdr_len
- QOS_CONTROL_LEN
);
100 static const struct ieee80211_supported_band
*iwl4965_get_hw_mode(
101 struct iwl_priv
*priv
, enum ieee80211_band band
)
103 return priv
->hw
->wiphy
->bands
[band
];
106 static int iwl4965_is_empty_essid(const char *essid
, int essid_len
)
108 /* Single white space is for Linksys APs */
109 if (essid_len
== 1 && essid
[0] == ' ')
112 /* Otherwise, if the entire essid is 0, we assume it is hidden */
115 if (essid
[essid_len
] != '\0')
122 static const char *iwl4965_escape_essid(const char *essid
, u8 essid_len
)
124 static char escaped
[IW_ESSID_MAX_SIZE
* 2 + 1];
125 const char *s
= essid
;
128 if (iwl4965_is_empty_essid(essid
, essid_len
)) {
129 memcpy(escaped
, "<hidden>", sizeof("<hidden>"));
133 essid_len
= min(essid_len
, (u8
) IW_ESSID_MAX_SIZE
);
134 while (essid_len
--) {
146 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
149 * Theory of operation
151 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
152 * of buffer descriptors, each of which points to one or more data buffers for
153 * the device to read from or fill. Driver and device exchange status of each
154 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
155 * entries in each circular buffer, to protect against confusing empty and full
158 * The device reads or writes the data in the queues via the device's several
159 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
161 * For Tx queue, there are low mark and high mark limits. If, after queuing
162 * the packet for Tx, free space become < low mark, Tx queue stopped. When
163 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
166 * The 4965 operates with up to 17 queues: One receive queue, one transmit
167 * queue (#4) for sending commands to the device firmware, and 15 other
168 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
170 * See more detailed info in iwl-4965-hw.h.
171 ***************************************************/
173 int iwl4965_queue_space(const struct iwl4965_queue
*q
)
175 int s
= q
->read_ptr
- q
->write_ptr
;
177 if (q
->read_ptr
> q
->write_ptr
)
182 /* keep some reserve to not confuse empty and full situations */
190 static inline int x2_queue_used(const struct iwl4965_queue
*q
, int i
)
192 return q
->write_ptr
> q
->read_ptr
?
193 (i
>= q
->read_ptr
&& i
< q
->write_ptr
) :
194 !(i
< q
->read_ptr
&& i
>= q
->write_ptr
);
197 static inline u8
get_cmd_index(struct iwl4965_queue
*q
, u32 index
, int is_huge
)
199 /* This is for scan command, the big buffer at end of command array */
201 return q
->n_window
; /* must be power of 2 */
203 /* Otherwise, use normal size buffers */
204 return index
& (q
->n_window
- 1);
208 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
210 static int iwl4965_queue_init(struct iwl_priv
*priv
, struct iwl4965_queue
*q
,
211 int count
, int slots_num
, u32 id
)
214 q
->n_window
= slots_num
;
217 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
218 * and iwl_queue_dec_wrap are broken. */
219 BUG_ON(!is_power_of_2(count
));
221 /* slots_num must be power-of-two size, otherwise
222 * get_cmd_index is broken. */
223 BUG_ON(!is_power_of_2(slots_num
));
225 q
->low_mark
= q
->n_window
/ 4;
229 q
->high_mark
= q
->n_window
/ 8;
230 if (q
->high_mark
< 2)
233 q
->write_ptr
= q
->read_ptr
= 0;
239 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
241 static int iwl4965_tx_queue_alloc(struct iwl_priv
*priv
,
242 struct iwl4965_tx_queue
*txq
, u32 id
)
244 struct pci_dev
*dev
= priv
->pci_dev
;
246 /* Driver private data, only for Tx (not command) queues,
247 * not shared with device. */
248 if (id
!= IWL_CMD_QUEUE_NUM
) {
249 txq
->txb
= kmalloc(sizeof(txq
->txb
[0]) *
250 TFD_QUEUE_SIZE_MAX
, GFP_KERNEL
);
252 IWL_ERROR("kmalloc for auxiliary BD "
253 "structures failed\n");
259 /* Circular buffer of transmit frame descriptors (TFDs),
260 * shared with device */
261 txq
->bd
= pci_alloc_consistent(dev
,
262 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
,
266 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
267 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
);
284 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
286 int iwl4965_tx_queue_init(struct iwl_priv
*priv
,
287 struct iwl4965_tx_queue
*txq
, int slots_num
, u32 txq_id
)
289 struct pci_dev
*dev
= priv
->pci_dev
;
294 * Alloc buffer array for commands (Tx or other types of commands).
295 * For the command queue (#4), allocate command space + one big
296 * command for scan, since scan command is very huge; the system will
297 * not have two scans at the same time, so only one is needed.
298 * For normal Tx queues (all other queues), no super-size command
301 len
= sizeof(struct iwl_cmd
) * slots_num
;
302 if (txq_id
== IWL_CMD_QUEUE_NUM
)
303 len
+= IWL_MAX_SCAN_SIZE
;
304 txq
->cmd
= pci_alloc_consistent(dev
, len
, &txq
->dma_addr_cmd
);
308 /* Alloc driver data array and TFD circular buffer */
309 rc
= iwl4965_tx_queue_alloc(priv
, txq
, txq_id
);
311 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
315 txq
->need_update
= 0;
317 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
318 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
319 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX
& (TFD_QUEUE_SIZE_MAX
- 1));
321 /* Initialize queue's high/low-water marks, and head/tail indexes */
322 iwl4965_queue_init(priv
, &txq
->q
, TFD_QUEUE_SIZE_MAX
, slots_num
, txq_id
);
324 /* Tell device where to find queue */
325 iwl4965_hw_tx_queue_init(priv
, txq
);
331 * iwl4965_tx_queue_free - Deallocate DMA queue.
332 * @txq: Transmit queue to deallocate.
334 * Empty queue by removing and destroying all BD's.
336 * 0-fill, but do not free "txq" descriptor structure.
338 void iwl4965_tx_queue_free(struct iwl_priv
*priv
, struct iwl4965_tx_queue
*txq
)
340 struct iwl4965_queue
*q
= &txq
->q
;
341 struct pci_dev
*dev
= priv
->pci_dev
;
347 /* first, empty all BD's */
348 for (; q
->write_ptr
!= q
->read_ptr
;
349 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
))
350 iwl4965_hw_txq_free_tfd(priv
, txq
);
352 len
= sizeof(struct iwl_cmd
) * q
->n_window
;
353 if (q
->id
== IWL_CMD_QUEUE_NUM
)
354 len
+= IWL_MAX_SCAN_SIZE
;
356 /* De-alloc array of command/tx buffers */
357 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
359 /* De-alloc circular buffer of TFDs */
361 pci_free_consistent(dev
, sizeof(struct iwl4965_tfd_frame
) *
362 txq
->q
.n_bd
, txq
->bd
, txq
->q
.dma_addr
);
364 /* De-alloc array of per-TFD driver data */
370 /* 0-fill queue descriptor structure */
371 memset(txq
, 0, sizeof(*txq
));
374 const u8 iwl4965_broadcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
376 /*************** STATION TABLE MANAGEMENT ****
377 * mac80211 should be examined to determine if sta_info is duplicating
378 * the functionality provided here
381 /**************************************************************/
383 #if 0 /* temporary disable till we add real remove station */
385 * iwl4965_remove_station - Remove driver's knowledge of station.
387 * NOTE: This does not remove station from device's station table.
389 static u8
iwl4965_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
391 int index
= IWL_INVALID_STATION
;
395 spin_lock_irqsave(&priv
->sta_lock
, flags
);
399 else if (is_broadcast_ether_addr(addr
))
400 index
= priv
->hw_setting
.bcast_sta_id
;
402 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++)
403 if (priv
->stations
[i
].used
&&
404 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
410 if (unlikely(index
== IWL_INVALID_STATION
))
413 if (priv
->stations
[index
].used
) {
414 priv
->stations
[index
].used
= 0;
415 priv
->num_stations
--;
418 BUG_ON(priv
->num_stations
< 0);
421 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
427 * iwl4965_add_station_flags - Add station to tables in driver and device
429 u8
iwl4965_add_station_flags(struct iwl_priv
*priv
, const u8
*addr
,
430 int is_ap
, u8 flags
, void *ht_data
)
433 int index
= IWL_INVALID_STATION
;
434 struct iwl4965_station_entry
*station
;
435 unsigned long flags_spin
;
436 DECLARE_MAC_BUF(mac
);
438 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
441 else if (is_broadcast_ether_addr(addr
))
442 index
= priv
->hw_setting
.bcast_sta_id
;
444 for (i
= IWL_STA_ID
; i
< priv
->hw_setting
.max_stations
; i
++) {
445 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
451 if (!priv
->stations
[i
].used
&&
452 index
== IWL_INVALID_STATION
)
457 /* These two conditions have the same outcome, but keep them separate
458 since they have different meanings */
459 if (unlikely(index
== IWL_INVALID_STATION
)) {
460 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
464 if (priv
->stations
[index
].used
&&
465 !compare_ether_addr(priv
->stations
[index
].sta
.sta
.addr
, addr
)) {
466 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
471 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index
, print_mac(mac
, addr
));
472 station
= &priv
->stations
[index
];
474 priv
->num_stations
++;
476 /* Set up the REPLY_ADD_STA command to send to device */
477 memset(&station
->sta
, 0, sizeof(struct iwl4965_addsta_cmd
));
478 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
479 station
->sta
.mode
= 0;
480 station
->sta
.sta
.sta_id
= index
;
481 station
->sta
.station_flags
= 0;
483 #ifdef CONFIG_IWL4965_HT
484 /* BCAST station and IBSS stations do not work in HT mode */
485 if (index
!= priv
->hw_setting
.bcast_sta_id
&&
486 priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
)
487 iwl4965_set_ht_add_station(priv
, index
,
488 (struct ieee80211_ht_info
*) ht_data
);
489 #endif /*CONFIG_IWL4965_HT*/
491 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
493 /* Add station to device's station table */
494 iwl4965_send_add_station(priv
, &station
->sta
, flags
);
501 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
504 * iwl4965_enqueue_hcmd - enqueue a uCode command
505 * @priv: device private data point
506 * @cmd: a point to the ucode command structure
508 * The function returns < 0 values to indicate the operation is
509 * failed. On success, it turns the index (> 0) of command in the
512 int iwl4965_enqueue_hcmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
514 struct iwl4965_tx_queue
*txq
= &priv
->txq
[IWL_CMD_QUEUE_NUM
];
515 struct iwl4965_queue
*q
= &txq
->q
;
516 struct iwl4965_tfd_frame
*tfd
;
518 struct iwl_cmd
*out_cmd
;
520 u16 fix_size
= (u16
)(cmd
->len
+ sizeof(out_cmd
->hdr
));
521 dma_addr_t phys_addr
;
525 /* If any of the command structures end up being larger than
526 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
527 * we will need to increase the size of the TFD entries */
528 BUG_ON((fix_size
> TFD_MAX_PAYLOAD_SIZE
) &&
529 !(cmd
->meta
.flags
& CMD_SIZE_HUGE
));
531 if (iwl_is_rfkill(priv
)) {
532 IWL_DEBUG_INFO("Not sending command - RF KILL");
536 if (iwl4965_queue_space(q
) < ((cmd
->meta
.flags
& CMD_ASYNC
) ? 2 : 1)) {
537 IWL_ERROR("No space for Tx\n");
541 spin_lock_irqsave(&priv
->hcmd_lock
, flags
);
543 tfd
= &txq
->bd
[q
->write_ptr
];
544 memset(tfd
, 0, sizeof(*tfd
));
546 control_flags
= (u32
*) tfd
;
548 idx
= get_cmd_index(q
, q
->write_ptr
, cmd
->meta
.flags
& CMD_SIZE_HUGE
);
549 out_cmd
= &txq
->cmd
[idx
];
551 out_cmd
->hdr
.cmd
= cmd
->id
;
552 memcpy(&out_cmd
->meta
, &cmd
->meta
, sizeof(cmd
->meta
));
553 memcpy(&out_cmd
->cmd
.payload
, cmd
->data
, cmd
->len
);
555 /* At this point, the out_cmd now has all of the incoming cmd
558 out_cmd
->hdr
.flags
= 0;
559 out_cmd
->hdr
.sequence
= cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM
) |
560 INDEX_TO_SEQ(q
->write_ptr
));
561 if (out_cmd
->meta
.flags
& CMD_SIZE_HUGE
)
562 out_cmd
->hdr
.sequence
|= cpu_to_le16(SEQ_HUGE_FRAME
);
564 phys_addr
= txq
->dma_addr_cmd
+ sizeof(txq
->cmd
[0]) * idx
+
565 offsetof(struct iwl_cmd
, hdr
);
566 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, fix_size
);
568 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
569 "%d bytes at %d[%d]:%d\n",
570 get_cmd_string(out_cmd
->hdr
.cmd
),
571 out_cmd
->hdr
.cmd
, le16_to_cpu(out_cmd
->hdr
.sequence
),
572 fix_size
, q
->write_ptr
, idx
, IWL_CMD_QUEUE_NUM
);
574 txq
->need_update
= 1;
576 /* Set up entry in queue's byte count circular buffer */
577 ret
= iwl4965_tx_queue_update_wr_ptr(priv
, txq
, 0);
579 /* Increment and update queue's write index */
580 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
581 iwl4965_tx_queue_update_write_ptr(priv
, txq
);
583 spin_unlock_irqrestore(&priv
->hcmd_lock
, flags
);
584 return ret
? ret
: idx
;
587 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
589 struct iwl4965_rxon_cmd
*rxon
= &priv
->staging_rxon
;
592 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
594 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
598 int iwl4965_send_statistics_request(struct iwl_priv
*priv
)
601 return iwl_send_cmd_pdu(priv
, REPLY_STATISTICS_CMD
,
602 sizeof(flags
), &flags
);
606 * iwl4965_rxon_add_station - add station into station table.
608 * there is only one AP station with id= IWL_AP_ID
609 * NOTE: mutex must be held before calling this fnction
611 static int iwl4965_rxon_add_station(struct iwl_priv
*priv
,
612 const u8
*addr
, int is_ap
)
616 /* Add station to device's station table */
617 #ifdef CONFIG_IWL4965_HT
618 struct ieee80211_conf
*conf
= &priv
->hw
->conf
;
619 struct ieee80211_ht_info
*cur_ht_config
= &conf
->ht_conf
;
622 (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) &&
623 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
624 sta_id
= iwl4965_add_station_flags(priv
, addr
, is_ap
,
627 #endif /* CONFIG_IWL4965_HT */
628 sta_id
= iwl4965_add_station_flags(priv
, addr
, is_ap
,
631 /* Set up default rate scaling table in device's station table */
632 iwl4965_add_station(priv
, addr
, is_ap
);
638 * iwl4965_check_rxon_cmd - validate RXON structure is valid
640 * NOTE: This is really only useful during development and can eventually
641 * be #ifdef'd out once the driver is stable and folks aren't actively
644 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd
*rxon
)
649 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
650 error
|= le32_to_cpu(rxon
->flags
&
651 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
652 RXON_FLG_RADAR_DETECT_MSK
));
654 IWL_WARNING("check 24G fields %d | %d\n",
657 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
658 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
660 IWL_WARNING("check 52 fields %d | %d\n",
662 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
664 IWL_WARNING("check 52 CCK %d | %d\n",
667 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
669 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
671 /* make sure basic rates 6Mbps and 1Mbps are supported */
672 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
673 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
675 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
677 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
679 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
681 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
682 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
684 IWL_WARNING("check CCK and short slot %d | %d\n",
687 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
688 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
690 IWL_WARNING("check CCK & auto detect %d | %d\n",
693 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
694 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
696 IWL_WARNING("check TGG and auto detect %d | %d\n",
700 IWL_WARNING("Tuning to channel %d\n",
701 le16_to_cpu(rxon
->channel
));
704 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
711 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
712 * @priv: staging_rxon is compared to active_rxon
714 * If the RXON structure is changing enough to require a new tune,
715 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
716 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
718 static int iwl4965_full_rxon_required(struct iwl_priv
*priv
)
721 /* These items are only settable from the full RXON command */
722 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
723 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
724 priv
->active_rxon
.bssid_addr
) ||
725 compare_ether_addr(priv
->staging_rxon
.node_addr
,
726 priv
->active_rxon
.node_addr
) ||
727 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
728 priv
->active_rxon
.wlap_bssid_addr
) ||
729 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
730 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
731 (priv
->staging_rxon
.air_propagation
!=
732 priv
->active_rxon
.air_propagation
) ||
733 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
734 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
735 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
736 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
737 (priv
->staging_rxon
.rx_chain
!= priv
->active_rxon
.rx_chain
) ||
738 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
741 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
742 * be updated with the RXON_ASSOC command -- however only some
743 * flag transitions are allowed using RXON_ASSOC */
745 /* Check if we are not switching bands */
746 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
747 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
750 /* Check if we are switching association toggle */
751 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
752 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
758 static int iwl4965_send_rxon_assoc(struct iwl_priv
*priv
)
761 struct iwl4965_rx_packet
*res
= NULL
;
762 struct iwl4965_rxon_assoc_cmd rxon_assoc
;
763 struct iwl_host_cmd cmd
= {
764 .id
= REPLY_RXON_ASSOC
,
765 .len
= sizeof(rxon_assoc
),
766 .meta
.flags
= CMD_WANT_SKB
,
769 const struct iwl4965_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
770 const struct iwl4965_rxon_cmd
*rxon2
= &priv
->active_rxon
;
772 if ((rxon1
->flags
== rxon2
->flags
) &&
773 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
774 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
775 (rxon1
->ofdm_ht_single_stream_basic_rates
==
776 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
777 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
778 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
779 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
780 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
781 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
785 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
786 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
787 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
788 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
789 rxon_assoc
.reserved
= 0;
790 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
791 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
792 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
793 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
794 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
796 rc
= iwl_send_cmd_sync(priv
, &cmd
);
800 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
801 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
802 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
806 priv
->alloc_rxb_skb
--;
807 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
813 * iwl4965_commit_rxon - commit staging_rxon to hardware
815 * The RXON command in staging_rxon is committed to the hardware and
816 * the active_rxon structure is updated with the new data. This
817 * function correctly transitions out of the RXON_ASSOC_MSK state if
818 * a HW tune is required based on the RXON structure changes.
820 static int iwl4965_commit_rxon(struct iwl_priv
*priv
)
822 /* cast away the const for active_rxon in this function */
823 struct iwl4965_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
824 DECLARE_MAC_BUF(mac
);
827 if (!iwl_is_alive(priv
))
830 /* always get timestamp with Rx frame */
831 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
833 rc
= iwl4965_check_rxon_cmd(&priv
->staging_rxon
);
835 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
839 /* If we don't need to send a full RXON, we can use
840 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
841 * and other flags for the current radio configuration. */
842 if (!iwl4965_full_rxon_required(priv
)) {
843 rc
= iwl4965_send_rxon_assoc(priv
);
845 IWL_ERROR("Error setting RXON_ASSOC "
846 "configuration (%d).\n", rc
);
850 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
855 /* station table will be cleared */
856 priv
->assoc_station_added
= 0;
858 #ifdef CONFIG_IWL4965_SENSITIVITY
859 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
860 if (!priv
->error_recovering
)
861 priv
->start_calib
= 0;
863 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
864 #endif /* CONFIG_IWL4965_SENSITIVITY */
866 /* If we are currently associated and the new config requires
867 * an RXON_ASSOC and the new config wants the associated mask enabled,
868 * we must clear the associated from the active configuration
869 * before we apply the new config */
870 if (iwl_is_associated(priv
) &&
871 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
872 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
873 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
875 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
876 sizeof(struct iwl4965_rxon_cmd
),
879 /* If the mask clearing failed then we set
880 * active_rxon back to what it was previously */
882 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
883 IWL_ERROR("Error clearing ASSOC_MSK on current "
884 "configuration (%d).\n", rc
);
889 IWL_DEBUG_INFO("Sending RXON\n"
890 "* with%s RXON_FILTER_ASSOC_MSK\n"
893 ((priv
->staging_rxon
.filter_flags
&
894 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
895 le16_to_cpu(priv
->staging_rxon
.channel
),
896 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
898 iwl4965_set_rxon_hwcrypto(priv
, priv
->cfg
->mod_params
->hw_crypto
);
899 /* Apply the new configuration */
900 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
901 sizeof(struct iwl4965_rxon_cmd
), &priv
->staging_rxon
);
903 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
907 iwlcore_clear_stations_table(priv
);
909 #ifdef CONFIG_IWL4965_SENSITIVITY
910 if (!priv
->error_recovering
)
911 priv
->start_calib
= 0;
913 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
914 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 1);
915 #endif /* CONFIG_IWL4965_SENSITIVITY */
917 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
919 /* If we issue a new RXON command which required a tune then we must
920 * send a new TXPOWER command or we won't be able to Tx any frames */
921 rc
= iwl4965_hw_reg_send_txpower(priv
);
923 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
927 /* Add the broadcast address so we can send broadcast frames */
928 if (iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0) ==
929 IWL_INVALID_STATION
) {
930 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
934 /* If we have set the ASSOC_MSK and we are in BSS mode then
935 * add the IWL_AP_ID to the station rate table */
936 if (iwl_is_associated(priv
) &&
937 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
938 if (iwl4965_rxon_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1)
939 == IWL_INVALID_STATION
) {
940 IWL_ERROR("Error adding AP address for transmit.\n");
943 priv
->assoc_station_added
= 1;
949 static int iwl4965_send_bt_config(struct iwl_priv
*priv
)
951 struct iwl4965_bt_cmd bt_cmd
= {
959 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
960 sizeof(struct iwl4965_bt_cmd
), &bt_cmd
);
963 static int iwl4965_send_scan_abort(struct iwl_priv
*priv
)
966 struct iwl4965_rx_packet
*res
;
967 struct iwl_host_cmd cmd
= {
968 .id
= REPLY_SCAN_ABORT_CMD
,
969 .meta
.flags
= CMD_WANT_SKB
,
972 /* If there isn't a scan actively going on in the hardware
973 * then we are in between scan bands and not actually
974 * actively scanning, so don't send the abort command */
975 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
976 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
980 rc
= iwl_send_cmd_sync(priv
, &cmd
);
982 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
986 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
987 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
988 /* The scan abort will return 1 for success or
989 * 2 for "failure". A failure condition can be
990 * due to simply not being in an active scan which
991 * can occur if we send the scan abort before we
992 * the microcode has notified us that a scan is
994 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
995 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
996 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
999 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1004 static int iwl4965_card_state_sync_callback(struct iwl_priv
*priv
,
1005 struct iwl_cmd
*cmd
,
1006 struct sk_buff
*skb
)
1014 * Use: Sets the device's internal card state to enable, disable, or halt
1016 * When in the 'enable' state the card operates as normal.
1017 * When in the 'disable' state, the card enters into a low power mode.
1018 * When in the 'halt' state, the card is shut down and must be fully
1019 * restarted to come back on.
1021 static int iwl4965_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
1023 struct iwl_host_cmd cmd
= {
1024 .id
= REPLY_CARD_STATE_CMD
,
1027 .meta
.flags
= meta_flag
,
1030 if (meta_flag
& CMD_ASYNC
)
1031 cmd
.meta
.u
.callback
= iwl4965_card_state_sync_callback
;
1033 return iwl_send_cmd(priv
, &cmd
);
1036 static int iwl4965_add_sta_sync_callback(struct iwl_priv
*priv
,
1037 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1039 struct iwl4965_rx_packet
*res
= NULL
;
1042 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1046 res
= (struct iwl4965_rx_packet
*)skb
->data
;
1047 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1048 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1053 switch (res
->u
.add_sta
.status
) {
1054 case ADD_STA_SUCCESS_MSK
:
1060 /* We didn't cache the SKB; let the caller free it */
1064 int iwl4965_send_add_station(struct iwl_priv
*priv
,
1065 struct iwl4965_addsta_cmd
*sta
, u8 flags
)
1067 struct iwl4965_rx_packet
*res
= NULL
;
1069 struct iwl_host_cmd cmd
= {
1070 .id
= REPLY_ADD_STA
,
1071 .len
= sizeof(struct iwl4965_addsta_cmd
),
1072 .meta
.flags
= flags
,
1076 if (flags
& CMD_ASYNC
)
1077 cmd
.meta
.u
.callback
= iwl4965_add_sta_sync_callback
;
1079 cmd
.meta
.flags
|= CMD_WANT_SKB
;
1081 rc
= iwl_send_cmd(priv
, &cmd
);
1083 if (rc
|| (flags
& CMD_ASYNC
))
1086 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1087 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1088 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1094 switch (res
->u
.add_sta
.status
) {
1095 case ADD_STA_SUCCESS_MSK
:
1096 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1100 IWL_WARNING("REPLY_ADD_STA failed\n");
1105 priv
->alloc_rxb_skb
--;
1106 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1111 static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
1112 struct ieee80211_key_conf
*keyconf
,
1115 unsigned long flags
;
1116 __le16 key_flags
= 0;
1118 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
1119 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1121 if (sta_id
== priv
->hw_setting
.bcast_sta_id
)
1122 key_flags
|= STA_KEY_MULTICAST_MSK
;
1124 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1125 keyconf
->hw_key_idx
= keyconf
->keyidx
;
1127 key_flags
&= ~STA_KEY_FLG_INVALID
;
1129 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1130 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1131 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
1133 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
1136 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
1139 priv
->stations
[sta_id
].sta
.key
.key_offset
1140 = (sta_id
% STA_KEY_MAX_NUM
);/*FIXME*/
1141 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
1142 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1143 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1145 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1147 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1148 return iwl4965_send_add_station(priv
,
1149 &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1152 static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
1153 struct ieee80211_key_conf
*keyconf
,
1156 unsigned long flags
;
1159 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1160 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1161 keyconf
->hw_key_idx
= keyconf
->keyidx
;
1163 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1165 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
1166 priv
->stations
[sta_id
].keyinfo
.conf
= keyconf
;
1167 priv
->stations
[sta_id
].keyinfo
.keylen
= 16;
1169 /* This copy is acutally not needed: we get the key with each TX */
1170 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
, 16);
1172 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
, 16);
1174 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1179 static int iwl4965_clear_sta_key_info(struct iwl_priv
*priv
, u8 sta_id
)
1181 unsigned long flags
;
1183 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1184 memset(&priv
->stations
[sta_id
].keyinfo
, 0, sizeof(struct iwl4965_hw_key
));
1185 memset(&priv
->stations
[sta_id
].sta
.key
, 0, sizeof(struct iwl4965_keyinfo
));
1186 priv
->stations
[sta_id
].sta
.key
.key_flags
= STA_KEY_FLG_NO_ENC
;
1187 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1188 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1189 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1191 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1192 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, 0);
1196 static int iwl4965_set_dynamic_key(struct iwl_priv
*priv
,
1197 struct ieee80211_key_conf
*key
, u8 sta_id
)
1203 ret
= iwl4965_set_ccmp_dynamic_key_info(priv
, key
, sta_id
);
1206 ret
= iwl4965_set_tkip_dynamic_key_info(priv
, key
, sta_id
);
1212 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__
, key
->alg
);
1219 static int iwl4965_remove_static_key(struct iwl_priv
*priv
)
1221 int ret
= -EOPNOTSUPP
;
1226 static int iwl4965_set_static_key(struct iwl_priv
*priv
,
1227 struct ieee80211_key_conf
*key
)
1229 if (key
->alg
== ALG_WEP
)
1232 IWL_ERROR("Static key invalid: alg %d\n", key
->alg
);
1236 static void iwl4965_clear_free_frames(struct iwl_priv
*priv
)
1238 struct list_head
*element
;
1240 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1241 priv
->frames_count
);
1243 while (!list_empty(&priv
->free_frames
)) {
1244 element
= priv
->free_frames
.next
;
1246 kfree(list_entry(element
, struct iwl4965_frame
, list
));
1247 priv
->frames_count
--;
1250 if (priv
->frames_count
) {
1251 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1252 priv
->frames_count
);
1253 priv
->frames_count
= 0;
1257 static struct iwl4965_frame
*iwl4965_get_free_frame(struct iwl_priv
*priv
)
1259 struct iwl4965_frame
*frame
;
1260 struct list_head
*element
;
1261 if (list_empty(&priv
->free_frames
)) {
1262 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1264 IWL_ERROR("Could not allocate frame!\n");
1268 priv
->frames_count
++;
1272 element
= priv
->free_frames
.next
;
1274 return list_entry(element
, struct iwl4965_frame
, list
);
1277 static void iwl4965_free_frame(struct iwl_priv
*priv
, struct iwl4965_frame
*frame
)
1279 memset(frame
, 0, sizeof(*frame
));
1280 list_add(&frame
->list
, &priv
->free_frames
);
1283 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv
*priv
,
1284 struct ieee80211_hdr
*hdr
,
1285 const u8
*dest
, int left
)
1288 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1289 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1290 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1293 if (priv
->ibss_beacon
->len
> left
)
1296 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1298 return priv
->ibss_beacon
->len
;
1301 static u8
iwl4965_rate_get_lowest_plcp(int rate_mask
)
1305 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1306 i
= iwl4965_rates
[i
].next_ieee
) {
1307 if (rate_mask
& (1 << i
))
1308 return iwl4965_rates
[i
].plcp
;
1311 return IWL_RATE_INVALID
;
1314 static int iwl4965_send_beacon_cmd(struct iwl_priv
*priv
)
1316 struct iwl4965_frame
*frame
;
1317 unsigned int frame_size
;
1321 frame
= iwl4965_get_free_frame(priv
);
1324 IWL_ERROR("Could not obtain free frame buffer for beacon "
1329 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1330 rate
= iwl4965_rate_get_lowest_plcp(priv
->active_rate_basic
&
1332 if (rate
== IWL_INVALID_RATE
)
1333 rate
= IWL_RATE_6M_PLCP
;
1335 rate
= iwl4965_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1336 if (rate
== IWL_INVALID_RATE
)
1337 rate
= IWL_RATE_1M_PLCP
;
1340 frame_size
= iwl4965_hw_get_beacon_cmd(priv
, frame
, rate
);
1342 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1345 iwl4965_free_frame(priv
, frame
);
1350 /******************************************************************************
1352 * Misc. internal state and helper functions
1354 ******************************************************************************/
1356 static void iwl4965_unset_hw_setting(struct iwl_priv
*priv
)
1358 if (priv
->hw_setting
.shared_virt
)
1359 pci_free_consistent(priv
->pci_dev
,
1360 sizeof(struct iwl4965_shared
),
1361 priv
->hw_setting
.shared_virt
,
1362 priv
->hw_setting
.shared_phys
);
1366 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1368 * return : set the bit for each supported rate insert in ie
1370 static u16
iwl4965_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1371 u16 basic_rate
, int *left
)
1373 u16 ret_rates
= 0, bit
;
1378 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1379 if (bit
& supported_rate
) {
1381 rates
[*cnt
] = iwl4965_rates
[i
].ieee
|
1382 ((bit
& basic_rate
) ? 0x80 : 0x00);
1386 (*cnt
>= IWL_SUPPORTED_RATES_IE_LEN
))
1395 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1397 static u16
iwl4965_fill_probe_req(struct iwl_priv
*priv
,
1398 enum ieee80211_band band
,
1399 struct ieee80211_mgmt
*frame
,
1400 int left
, int is_direct
)
1404 u16 active_rates
, ret_rates
, cck_rates
, active_rate_basic
;
1405 #ifdef CONFIG_IWL4965_HT
1406 const struct ieee80211_supported_band
*sband
=
1407 iwl4965_get_hw_mode(priv
, band
);
1408 #endif /* CONFIG_IWL4965_HT */
1410 /* Make sure there is enough space for the probe request,
1411 * two mandatory IEs and the data */
1417 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1418 memcpy(frame
->da
, iwl4965_broadcast_addr
, ETH_ALEN
);
1419 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1420 memcpy(frame
->bssid
, iwl4965_broadcast_addr
, ETH_ALEN
);
1421 frame
->seq_ctrl
= 0;
1423 /* fill in our indirect SSID IE */
1430 pos
= &(frame
->u
.probe_req
.variable
[0]);
1431 *pos
++ = WLAN_EID_SSID
;
1434 /* fill in our direct SSID IE... */
1437 left
-= 2 + priv
->essid_len
;
1440 /* ... fill it in... */
1441 *pos
++ = WLAN_EID_SSID
;
1442 *pos
++ = priv
->essid_len
;
1443 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1444 pos
+= priv
->essid_len
;
1445 len
+= 2 + priv
->essid_len
;
1448 /* fill in supported rate */
1454 /* ... fill it in... */
1455 *pos
++ = WLAN_EID_SUPP_RATES
;
1458 /* exclude 60M rate */
1459 active_rates
= priv
->rates_mask
;
1460 active_rates
&= ~IWL_RATE_60M_MASK
;
1462 active_rate_basic
= active_rates
& IWL_BASIC_RATES_MASK
;
1464 cck_rates
= IWL_CCK_RATES_MASK
& active_rates
;
1465 ret_rates
= iwl4965_supported_rate_to_ie(pos
, cck_rates
,
1466 active_rate_basic
, &left
);
1467 active_rates
&= ~ret_rates
;
1469 ret_rates
= iwl4965_supported_rate_to_ie(pos
, active_rates
,
1470 active_rate_basic
, &left
);
1471 active_rates
&= ~ret_rates
;
1475 if (active_rates
== 0)
1478 /* fill in supported extended rate */
1483 /* ... fill it in... */
1484 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1486 iwl4965_supported_rate_to_ie(pos
, active_rates
,
1487 active_rate_basic
, &left
);
1491 #ifdef CONFIG_IWL4965_HT
1492 if (sband
&& sband
->ht_info
.ht_supported
) {
1493 struct ieee80211_ht_cap
*ht_cap
;
1495 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1496 *pos
++ = sizeof(struct ieee80211_ht_cap
);
1497 ht_cap
= (struct ieee80211_ht_cap
*)pos
;
1498 ht_cap
->cap_info
= cpu_to_le16(sband
->ht_info
.cap
);
1499 memcpy(ht_cap
->supp_mcs_set
, sband
->ht_info
.supp_mcs_set
, 16);
1500 ht_cap
->ampdu_params_info
=(sband
->ht_info
.ampdu_factor
&
1501 IEEE80211_HT_CAP_AMPDU_FACTOR
) |
1502 ((sband
->ht_info
.ampdu_density
<< 2) &
1503 IEEE80211_HT_CAP_AMPDU_DENSITY
);
1504 len
+= 2 + sizeof(struct ieee80211_ht_cap
);
1506 #endif /*CONFIG_IWL4965_HT */
1515 static int iwl4965_send_qos_params_command(struct iwl_priv
*priv
,
1516 struct iwl4965_qosparam_cmd
*qos
)
1519 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1520 sizeof(struct iwl4965_qosparam_cmd
), qos
);
1523 static void iwl4965_activate_qos(struct iwl_priv
*priv
, u8 force
)
1525 unsigned long flags
;
1527 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1530 if (!priv
->qos_data
.qos_enable
)
1533 spin_lock_irqsave(&priv
->lock
, flags
);
1534 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
1536 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
1537 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
1538 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1539 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
1540 if (priv
->qos_data
.qos_active
)
1541 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1542 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
1544 #ifdef CONFIG_IWL4965_HT
1545 if (priv
->current_ht_config
.is_ht
)
1546 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
1547 #endif /* CONFIG_IWL4965_HT */
1549 spin_unlock_irqrestore(&priv
->lock
, flags
);
1551 if (force
|| iwl_is_associated(priv
)) {
1552 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1553 priv
->qos_data
.qos_active
,
1554 priv
->qos_data
.def_qos_parm
.qos_flags
);
1556 iwl4965_send_qos_params_command(priv
,
1557 &(priv
->qos_data
.def_qos_parm
));
1562 * Power management (not Tx power!) functions
1564 #define MSEC_TO_USEC 1024
1566 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1567 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1568 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1569 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1570 __constant_cpu_to_le32(X1), \
1571 __constant_cpu_to_le32(X2), \
1572 __constant_cpu_to_le32(X3), \
1573 __constant_cpu_to_le32(X4)}
1576 /* default power management (not Tx power) table values */
1578 static struct iwl4965_power_vec_entry range_0
[IWL_POWER_AC
] = {
1579 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1580 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1581 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1582 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1583 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1584 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1588 static struct iwl4965_power_vec_entry range_1
[IWL_POWER_AC
] = {
1589 {{NOSLP
, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1590 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1591 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1592 {{SLP
, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1593 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1594 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1595 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1596 {{SLP
, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1597 {{SLP
, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1598 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1601 int iwl4965_power_init_handle(struct iwl_priv
*priv
)
1604 struct iwl4965_power_mgr
*pow_data
;
1605 int size
= sizeof(struct iwl4965_power_vec_entry
) * IWL_POWER_AC
;
1608 IWL_DEBUG_POWER("Initialize power \n");
1610 pow_data
= &(priv
->power_data
);
1612 memset(pow_data
, 0, sizeof(*pow_data
));
1614 pow_data
->active_index
= IWL_POWER_RANGE_0
;
1615 pow_data
->dtim_val
= 0xffff;
1617 memcpy(&pow_data
->pwr_range_0
[0], &range_0
[0], size
);
1618 memcpy(&pow_data
->pwr_range_1
[0], &range_1
[0], size
);
1620 rc
= pci_read_config_word(priv
->pci_dev
, PCI_LINK_CTRL
, &pci_pm
);
1624 struct iwl4965_powertable_cmd
*cmd
;
1626 IWL_DEBUG_POWER("adjust power command flags\n");
1628 for (i
= 0; i
< IWL_POWER_AC
; i
++) {
1629 cmd
= &pow_data
->pwr_range_0
[i
].cmd
;
1632 cmd
->flags
&= ~IWL_POWER_PCI_PM_MSK
;
1634 cmd
->flags
|= IWL_POWER_PCI_PM_MSK
;
1640 static int iwl4965_update_power_cmd(struct iwl_priv
*priv
,
1641 struct iwl4965_powertable_cmd
*cmd
, u32 mode
)
1646 struct iwl4965_power_vec_entry
*range
;
1648 struct iwl4965_power_mgr
*pow_data
;
1650 if (mode
> IWL_POWER_INDEX_5
) {
1651 IWL_DEBUG_POWER("Error invalid power mode \n");
1654 pow_data
= &(priv
->power_data
);
1656 if (pow_data
->active_index
== IWL_POWER_RANGE_0
)
1657 range
= &pow_data
->pwr_range_0
[0];
1659 range
= &pow_data
->pwr_range_1
[1];
1661 memcpy(cmd
, &range
[mode
].cmd
, sizeof(struct iwl4965_powertable_cmd
));
1663 #ifdef IWL_MAC80211_DISABLE
1664 if (priv
->assoc_network
!= NULL
) {
1665 unsigned long flags
;
1667 period
= priv
->assoc_network
->tim
.tim_period
;
1669 #endif /*IWL_MAC80211_DISABLE */
1670 skip
= range
[mode
].no_dtim
;
1679 cmd
->flags
&= ~IWL_POWER_SLEEP_OVER_DTIM_MSK
;
1681 __le32 slp_itrvl
= cmd
->sleep_interval
[IWL_POWER_VEC_SIZE
- 1];
1682 max_sleep
= (le32_to_cpu(slp_itrvl
) / period
) * period
;
1683 cmd
->flags
|= IWL_POWER_SLEEP_OVER_DTIM_MSK
;
1686 for (i
= 0; i
< IWL_POWER_VEC_SIZE
; i
++) {
1687 if (le32_to_cpu(cmd
->sleep_interval
[i
]) > max_sleep
)
1688 cmd
->sleep_interval
[i
] = cpu_to_le32(max_sleep
);
1691 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd
->flags
);
1692 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd
->tx_data_timeout
));
1693 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd
->rx_data_timeout
));
1694 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1695 le32_to_cpu(cmd
->sleep_interval
[0]),
1696 le32_to_cpu(cmd
->sleep_interval
[1]),
1697 le32_to_cpu(cmd
->sleep_interval
[2]),
1698 le32_to_cpu(cmd
->sleep_interval
[3]),
1699 le32_to_cpu(cmd
->sleep_interval
[4]));
1704 static int iwl4965_send_power_mode(struct iwl_priv
*priv
, u32 mode
)
1706 u32
uninitialized_var(final_mode
);
1708 struct iwl4965_powertable_cmd cmd
;
1710 /* If on battery, set to 3,
1711 * if plugged into AC power, set to CAM ("continuously aware mode"),
1712 * else user level */
1714 case IWL_POWER_BATTERY
:
1715 final_mode
= IWL_POWER_INDEX_3
;
1718 final_mode
= IWL_POWER_MODE_CAM
;
1725 cmd
.keep_alive_beacons
= 0;
1727 iwl4965_update_power_cmd(priv
, &cmd
, final_mode
);
1729 rc
= iwl_send_cmd_pdu(priv
, POWER_TABLE_CMD
, sizeof(cmd
), &cmd
);
1731 if (final_mode
== IWL_POWER_MODE_CAM
)
1732 clear_bit(STATUS_POWER_PMI
, &priv
->status
);
1734 set_bit(STATUS_POWER_PMI
, &priv
->status
);
1739 int iwl4965_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
1741 /* Filter incoming packets to determine if they are targeted toward
1742 * this network, discarding packets coming from ourselves */
1743 switch (priv
->iw_mode
) {
1744 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
1745 /* packets from our adapter are dropped (echo) */
1746 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
1748 /* {broad,multi}cast packets to our IBSS go through */
1749 if (is_multicast_ether_addr(header
->addr1
))
1750 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
1751 /* packets to our adapter go through */
1752 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1753 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
1754 /* packets from our adapter are dropped (echo) */
1755 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
1757 /* {broad,multi}cast packets to our BSS go through */
1758 if (is_multicast_ether_addr(header
->addr1
))
1759 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
1760 /* packets to our adapter go through */
1761 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1769 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1771 static const char *iwl4965_get_tx_fail_reason(u32 status
)
1773 switch (status
& TX_STATUS_MSK
) {
1774 case TX_STATUS_SUCCESS
:
1776 TX_STATUS_ENTRY(SHORT_LIMIT
);
1777 TX_STATUS_ENTRY(LONG_LIMIT
);
1778 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
1779 TX_STATUS_ENTRY(MGMNT_ABORT
);
1780 TX_STATUS_ENTRY(NEXT_FRAG
);
1781 TX_STATUS_ENTRY(LIFE_EXPIRE
);
1782 TX_STATUS_ENTRY(DEST_PS
);
1783 TX_STATUS_ENTRY(ABORTED
);
1784 TX_STATUS_ENTRY(BT_RETRY
);
1785 TX_STATUS_ENTRY(STA_INVALID
);
1786 TX_STATUS_ENTRY(FRAG_DROPPED
);
1787 TX_STATUS_ENTRY(TID_DISABLE
);
1788 TX_STATUS_ENTRY(FRAME_FLUSHED
);
1789 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
1790 TX_STATUS_ENTRY(TX_LOCKED
);
1791 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
1798 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1800 * NOTE: priv->mutex is not required before calling this function
1802 static int iwl4965_scan_cancel(struct iwl_priv
*priv
)
1804 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1805 clear_bit(STATUS_SCANNING
, &priv
->status
);
1809 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1810 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
1811 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1812 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1813 queue_work(priv
->workqueue
, &priv
->abort_scan
);
1816 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1818 return test_bit(STATUS_SCANNING
, &priv
->status
);
1825 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1826 * @ms: amount of time to wait (in milliseconds) for scan to abort
1828 * NOTE: priv->mutex must be held before calling this function
1830 static int iwl4965_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
1832 unsigned long now
= jiffies
;
1835 ret
= iwl4965_scan_cancel(priv
);
1837 mutex_unlock(&priv
->mutex
);
1838 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
1839 test_bit(STATUS_SCANNING
, &priv
->status
))
1841 mutex_lock(&priv
->mutex
);
1843 return test_bit(STATUS_SCANNING
, &priv
->status
);
1849 static void iwl4965_sequence_reset(struct iwl_priv
*priv
)
1851 /* Reset ieee stats */
1853 /* We don't reset the net_device_stats (ieee->stats) on
1856 priv
->last_seq_num
= -1;
1857 priv
->last_frag_num
= -1;
1858 priv
->last_packet_time
= 0;
1860 iwl4965_scan_cancel(priv
);
1863 #define MAX_UCODE_BEACON_INTERVAL 4096
1864 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1866 static __le16
iwl4965_adjust_beacon_interval(u16 beacon_val
)
1869 u16 beacon_factor
= 0;
1872 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
1873 / MAX_UCODE_BEACON_INTERVAL
;
1874 new_val
= beacon_val
/ beacon_factor
;
1876 return cpu_to_le16(new_val
);
1879 static void iwl4965_setup_rxon_timing(struct iwl_priv
*priv
)
1881 u64 interval_tm_unit
;
1883 unsigned long flags
;
1884 struct ieee80211_conf
*conf
= NULL
;
1887 conf
= ieee80211_get_hw_conf(priv
->hw
);
1889 spin_lock_irqsave(&priv
->lock
, flags
);
1890 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp
>> 32);
1891 priv
->rxon_timing
.timestamp
.dw
[0] =
1892 cpu_to_le32(priv
->timestamp
& 0xFFFFFFFF);
1894 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
1896 tsf
= priv
->timestamp
;
1898 beacon_int
= priv
->beacon_int
;
1899 spin_unlock_irqrestore(&priv
->lock
, flags
);
1901 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
1902 if (beacon_int
== 0) {
1903 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
1904 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
1906 priv
->rxon_timing
.beacon_interval
=
1907 cpu_to_le16(beacon_int
);
1908 priv
->rxon_timing
.beacon_interval
=
1909 iwl4965_adjust_beacon_interval(
1910 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
1913 priv
->rxon_timing
.atim_window
= 0;
1915 priv
->rxon_timing
.beacon_interval
=
1916 iwl4965_adjust_beacon_interval(conf
->beacon_int
);
1917 /* TODO: we need to get atim_window from upper stack
1918 * for now we set to 0 */
1919 priv
->rxon_timing
.atim_window
= 0;
1923 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
1924 result
= do_div(tsf
, interval_tm_unit
);
1925 priv
->rxon_timing
.beacon_init_val
=
1926 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
1929 ("beacon interval %d beacon timer %d beacon tim %d\n",
1930 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
1931 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
1932 le16_to_cpu(priv
->rxon_timing
.atim_window
));
1935 static int iwl4965_scan_initiate(struct iwl_priv
*priv
)
1937 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1938 IWL_ERROR("APs don't scan.\n");
1942 if (!iwl_is_ready_rf(priv
)) {
1943 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1947 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1948 IWL_DEBUG_SCAN("Scan already in progress.\n");
1952 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
1953 IWL_DEBUG_SCAN("Scan request while abort pending. "
1958 IWL_DEBUG_INFO("Starting scan...\n");
1959 priv
->scan_bands
= 2;
1960 set_bit(STATUS_SCANNING
, &priv
->status
);
1961 priv
->scan_start
= jiffies
;
1962 priv
->scan_pass_start
= priv
->scan_start
;
1964 queue_work(priv
->workqueue
, &priv
->request_scan
);
1970 static void iwl4965_set_flags_for_phymode(struct iwl_priv
*priv
,
1971 enum ieee80211_band band
)
1973 if (band
== IEEE80211_BAND_5GHZ
) {
1974 priv
->staging_rxon
.flags
&=
1975 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
1976 | RXON_FLG_CCK_MSK
);
1977 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1979 /* Copied from iwl4965_bg_post_associate() */
1980 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1981 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1983 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1985 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
1986 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1988 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
1989 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
1990 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
1995 * initialize rxon structure with default values from eeprom
1997 static void iwl4965_connection_init_rx_config(struct iwl_priv
*priv
)
1999 const struct iwl_channel_info
*ch_info
;
2001 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
2003 switch (priv
->iw_mode
) {
2004 case IEEE80211_IF_TYPE_AP
:
2005 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
2008 case IEEE80211_IF_TYPE_STA
:
2009 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
2010 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
2013 case IEEE80211_IF_TYPE_IBSS
:
2014 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
2015 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
2016 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
2017 RXON_FILTER_ACCEPT_GRP_MSK
;
2020 case IEEE80211_IF_TYPE_MNTR
:
2021 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
2022 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
2023 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
2026 IWL_ERROR("Unsupported interface type %d\n", priv
->iw_mode
);
2031 /* TODO: Figure out when short_preamble would be set and cache from
2033 if (!hw_to_local(priv
->hw
)->short_preamble
)
2034 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2036 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2039 ch_info
= iwl_get_channel_info(priv
, priv
->band
,
2040 le16_to_cpu(priv
->staging_rxon
.channel
));
2043 ch_info
= &priv
->channel_info
[0];
2046 * in some case A channels are all non IBSS
2047 * in this case force B/G channel
2049 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
2050 !(is_channel_ibss(ch_info
)))
2051 ch_info
= &priv
->channel_info
[0];
2053 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
2054 priv
->band
= ch_info
->band
;
2056 iwl4965_set_flags_for_phymode(priv
, priv
->band
);
2058 priv
->staging_rxon
.ofdm_basic_rates
=
2059 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2060 priv
->staging_rxon
.cck_basic_rates
=
2061 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2063 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
2064 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
2065 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2066 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
2067 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
2068 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
2069 iwl4965_set_rxon_chain(priv
);
2072 static int iwl4965_set_mode(struct iwl_priv
*priv
, int mode
)
2074 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
2075 const struct iwl_channel_info
*ch_info
;
2077 ch_info
= iwl_get_channel_info(priv
,
2079 le16_to_cpu(priv
->staging_rxon
.channel
));
2081 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
2082 IWL_ERROR("channel %d not IBSS channel\n",
2083 le16_to_cpu(priv
->staging_rxon
.channel
));
2088 priv
->iw_mode
= mode
;
2090 iwl4965_connection_init_rx_config(priv
);
2091 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2093 iwlcore_clear_stations_table(priv
);
2095 /* dont commit rxon if rf-kill is on*/
2096 if (!iwl_is_ready_rf(priv
))
2099 cancel_delayed_work(&priv
->scan_check
);
2100 if (iwl4965_scan_cancel_timeout(priv
, 100)) {
2101 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2102 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2106 iwl4965_commit_rxon(priv
);
2111 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
2112 struct ieee80211_tx_control
*ctl
,
2113 struct iwl_cmd
*cmd
,
2114 struct sk_buff
*skb_frag
,
2117 struct iwl4965_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
2119 switch (keyinfo
->alg
) {
2121 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
2122 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
2123 if (ctl
->flags
& IEEE80211_TXCTL_AMPDU
)
2124 cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_AGG_CCMP_MSK
;
2125 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2129 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
2130 ieee80211_get_tkip_key(keyinfo
->conf
, skb_frag
,
2131 IEEE80211_TKIP_P2_KEY
, cmd
->cmd
.tx
.key
);
2132 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2136 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_WEP
|
2137 (ctl
->key_idx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
;
2139 if (keyinfo
->keylen
== 13)
2140 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
2142 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
, keyinfo
->keylen
);
2144 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2145 "with key %d\n", ctl
->key_idx
);
2149 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
2155 * handle build REPLY_TX command notification.
2157 static void iwl4965_build_tx_cmd_basic(struct iwl_priv
*priv
,
2158 struct iwl_cmd
*cmd
,
2159 struct ieee80211_tx_control
*ctrl
,
2160 struct ieee80211_hdr
*hdr
,
2161 int is_unicast
, u8 std_id
)
2164 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2165 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2167 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2168 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
2169 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
2170 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
2171 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2172 if (ieee80211_is_probe_response(fc
) &&
2173 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
2174 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
2176 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
2177 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2180 if (ieee80211_is_back_request(fc
))
2181 tx_flags
|= TX_CMD_FLG_ACK_MSK
| TX_CMD_FLG_IMM_BA_RSP_MASK
;
2184 cmd
->cmd
.tx
.sta_id
= std_id
;
2185 if (ieee80211_get_morefrag(hdr
))
2186 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
2188 qc
= ieee80211_get_qos_ctrl(hdr
);
2190 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
2191 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
2193 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
2195 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
2196 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
2197 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
2198 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
2199 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2200 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2203 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
2204 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
2206 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
2207 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2208 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
2209 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
2210 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(3);
2212 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(2);
2214 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
2217 cmd
->cmd
.tx
.driver_txop
= 0;
2218 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2219 cmd
->cmd
.tx
.next_frame_len
= 0;
2221 static void iwl_update_tx_stats(struct iwl_priv
*priv
, u16 fc
, u16 len
)
2223 /* 0 - mgmt, 1 - cnt, 2 - data */
2224 int idx
= (fc
& IEEE80211_FCTL_FTYPE
) >> 2;
2225 priv
->tx_stats
[idx
].cnt
++;
2226 priv
->tx_stats
[idx
].bytes
+= len
;
2229 * iwl4965_get_sta_id - Find station's index within station table
2231 * If new IBSS station, create new entry in station table
2233 static int iwl4965_get_sta_id(struct iwl_priv
*priv
,
2234 struct ieee80211_hdr
*hdr
)
2237 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2238 DECLARE_MAC_BUF(mac
);
2240 /* If this frame is broadcast or management, use broadcast station id */
2241 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
2242 is_multicast_ether_addr(hdr
->addr1
))
2243 return priv
->hw_setting
.bcast_sta_id
;
2245 switch (priv
->iw_mode
) {
2247 /* If we are a client station in a BSS network, use the special
2248 * AP station entry (that's the only station we communicate with) */
2249 case IEEE80211_IF_TYPE_STA
:
2252 /* If we are an AP, then find the station, or use BCAST */
2253 case IEEE80211_IF_TYPE_AP
:
2254 sta_id
= iwl4965_hw_find_station(priv
, hdr
->addr1
);
2255 if (sta_id
!= IWL_INVALID_STATION
)
2257 return priv
->hw_setting
.bcast_sta_id
;
2259 /* If this frame is going out to an IBSS network, find the station,
2260 * or create a new station table entry */
2261 case IEEE80211_IF_TYPE_IBSS
:
2262 sta_id
= iwl4965_hw_find_station(priv
, hdr
->addr1
);
2263 if (sta_id
!= IWL_INVALID_STATION
)
2266 /* Create new station table entry */
2267 sta_id
= iwl4965_add_station_flags(priv
, hdr
->addr1
,
2268 0, CMD_ASYNC
, NULL
);
2270 if (sta_id
!= IWL_INVALID_STATION
)
2273 IWL_DEBUG_DROP("Station %s not in station map. "
2274 "Defaulting to broadcast...\n",
2275 print_mac(mac
, hdr
->addr1
));
2276 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
2277 return priv
->hw_setting
.bcast_sta_id
;
2280 IWL_WARNING("Unknown mode of operation: %d", priv
->iw_mode
);
2281 return priv
->hw_setting
.bcast_sta_id
;
2286 * start REPLY_TX command process
2288 static int iwl4965_tx_skb(struct iwl_priv
*priv
,
2289 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
2291 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2292 struct iwl4965_tfd_frame
*tfd
;
2294 int txq_id
= ctl
->queue
;
2295 struct iwl4965_tx_queue
*txq
= NULL
;
2296 struct iwl4965_queue
*q
= NULL
;
2297 dma_addr_t phys_addr
;
2298 dma_addr_t txcmd_phys
;
2299 dma_addr_t scratch_phys
;
2300 struct iwl_cmd
*out_cmd
= NULL
;
2301 u16 len
, idx
, len_org
;
2302 u8 id
, hdr_len
, unicast
;
2307 u8 wait_write_ptr
= 0;
2308 unsigned long flags
;
2311 spin_lock_irqsave(&priv
->lock
, flags
);
2312 if (iwl_is_rfkill(priv
)) {
2313 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2318 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2322 if ((ctl
->tx_rate
->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
2323 IWL_ERROR("ERROR: No TX rate available.\n");
2327 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2330 fc
= le16_to_cpu(hdr
->frame_control
);
2332 #ifdef CONFIG_IWLWIFI_DEBUG
2333 if (ieee80211_is_auth(fc
))
2334 IWL_DEBUG_TX("Sending AUTH frame\n");
2335 else if (ieee80211_is_assoc_request(fc
))
2336 IWL_DEBUG_TX("Sending ASSOC frame\n");
2337 else if (ieee80211_is_reassoc_request(fc
))
2338 IWL_DEBUG_TX("Sending REASSOC frame\n");
2341 /* drop all data frame if we are not associated */
2342 if (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
) &&
2343 (!iwl_is_associated(priv
) ||
2344 ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && !priv
->assoc_id
) ||
2345 !priv
->assoc_station_added
)) {
2346 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2350 spin_unlock_irqrestore(&priv
->lock
, flags
);
2352 hdr_len
= ieee80211_get_hdrlen(fc
);
2354 /* Find (or create) index into station table for destination station */
2355 sta_id
= iwl4965_get_sta_id(priv
, hdr
);
2356 if (sta_id
== IWL_INVALID_STATION
) {
2357 DECLARE_MAC_BUF(mac
);
2359 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2360 print_mac(mac
, hdr
->addr1
));
2364 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2366 qc
= ieee80211_get_qos_ctrl(hdr
);
2368 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2369 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2371 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2373 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2375 #ifdef CONFIG_IWL4965_HT
2376 /* aggregation is on for this <sta,tid> */
2377 if (ctl
->flags
& IEEE80211_TXCTL_AMPDU
)
2378 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2379 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
++;
2380 #endif /* CONFIG_IWL4965_HT */
2383 /* Descriptor for chosen Tx queue */
2384 txq
= &priv
->txq
[txq_id
];
2387 spin_lock_irqsave(&priv
->lock
, flags
);
2389 /* Set up first empty TFD within this queue's circular TFD buffer */
2390 tfd
= &txq
->bd
[q
->write_ptr
];
2391 memset(tfd
, 0, sizeof(*tfd
));
2392 control_flags
= (u32
*) tfd
;
2393 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
2395 /* Set up driver data for this TFD */
2396 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl4965_tx_info
));
2397 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
2398 memcpy(&(txq
->txb
[q
->write_ptr
].status
.control
),
2399 ctl
, sizeof(struct ieee80211_tx_control
));
2401 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2402 out_cmd
= &txq
->cmd
[idx
];
2403 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2404 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2407 * Set up the Tx-command (not MAC!) header.
2408 * Store the chosen Tx queue and TFD index within the sequence field;
2409 * after Tx, uCode's Tx response will return this value so driver can
2410 * locate the frame within the tx queue and do post-tx processing.
2412 out_cmd
->hdr
.cmd
= REPLY_TX
;
2413 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2414 INDEX_TO_SEQ(q
->write_ptr
)));
2416 /* Copy MAC header from skb into command buffer */
2417 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2420 * Use the first empty entry in this queue's command buffer array
2421 * to contain the Tx command and MAC header concatenated together
2422 * (payload data will be in another buffer).
2423 * Size of this varies, due to varying MAC header length.
2424 * If end is not dword aligned, we'll have 2 extra bytes at the end
2425 * of the MAC header (device reads on dword boundaries).
2426 * We'll tell device about this padding later.
2428 len
= priv
->hw_setting
.tx_cmd_len
+
2429 sizeof(struct iwl_cmd_header
) + hdr_len
;
2432 len
= (len
+ 3) & ~3;
2439 /* Physical address of this Tx command's header (not MAC header!),
2440 * within command buffer array. */
2441 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2442 offsetof(struct iwl_cmd
, hdr
);
2444 /* Add buffer containing Tx command and MAC(!) header to TFD's
2446 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2448 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2449 iwl4965_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, sta_id
);
2451 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2452 * if any (802.11 null frames have no payload). */
2453 len
= skb
->len
- hdr_len
;
2455 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2456 len
, PCI_DMA_TODEVICE
);
2457 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2460 /* Tell 4965 about any 2-byte padding after MAC header */
2462 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2464 /* Total # bytes to be transmitted */
2465 len
= (u16
)skb
->len
;
2466 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2468 /* TODO need this for burst mode later on */
2469 iwl4965_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2471 /* set is_hcca to 0; it probably will never be implemented */
2472 iwl4965_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2474 iwl_update_tx_stats(priv
, fc
, len
);
2476 scratch_phys
= txcmd_phys
+ sizeof(struct iwl_cmd_header
) +
2477 offsetof(struct iwl4965_tx_cmd
, scratch
);
2478 out_cmd
->cmd
.tx
.dram_lsb_ptr
= cpu_to_le32(scratch_phys
);
2479 out_cmd
->cmd
.tx
.dram_msb_ptr
= iwl_get_dma_hi_address(scratch_phys
);
2481 if (!ieee80211_get_morefrag(hdr
)) {
2482 txq
->need_update
= 1;
2484 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2485 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2489 txq
->need_update
= 0;
2492 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2493 sizeof(out_cmd
->cmd
.tx
));
2495 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2496 ieee80211_get_hdrlen(fc
));
2498 /* Set up entry for this TFD in Tx byte-count array */
2499 iwl4965_tx_queue_update_wr_ptr(priv
, txq
, len
);
2501 /* Tell device the write index *just past* this latest filled TFD */
2502 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
2503 rc
= iwl4965_tx_queue_update_write_ptr(priv
, txq
);
2504 spin_unlock_irqrestore(&priv
->lock
, flags
);
2509 if ((iwl4965_queue_space(q
) < q
->high_mark
)
2510 && priv
->mac80211_registered
) {
2511 if (wait_write_ptr
) {
2512 spin_lock_irqsave(&priv
->lock
, flags
);
2513 txq
->need_update
= 1;
2514 iwl4965_tx_queue_update_write_ptr(priv
, txq
);
2515 spin_unlock_irqrestore(&priv
->lock
, flags
);
2518 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2524 spin_unlock_irqrestore(&priv
->lock
, flags
);
2529 static void iwl4965_set_rate(struct iwl_priv
*priv
)
2531 const struct ieee80211_supported_band
*hw
= NULL
;
2532 struct ieee80211_rate
*rate
;
2535 hw
= iwl4965_get_hw_mode(priv
, priv
->band
);
2537 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2541 priv
->active_rate
= 0;
2542 priv
->active_rate_basic
= 0;
2544 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
2545 rate
= &(hw
->bitrates
[i
]);
2546 if (rate
->hw_value
< IWL_RATE_COUNT
)
2547 priv
->active_rate
|= (1 << rate
->hw_value
);
2550 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2551 priv
->active_rate
, priv
->active_rate_basic
);
2554 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2555 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2558 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
2559 priv
->staging_rxon
.cck_basic_rates
=
2560 ((priv
->active_rate_basic
&
2561 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
2563 priv
->staging_rxon
.cck_basic_rates
=
2564 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2566 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
2567 priv
->staging_rxon
.ofdm_basic_rates
=
2568 ((priv
->active_rate_basic
&
2569 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
2570 IWL_FIRST_OFDM_RATE
) & 0xFF;
2572 priv
->staging_rxon
.ofdm_basic_rates
=
2573 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2576 void iwl4965_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
2578 unsigned long flags
;
2580 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
2583 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2584 disable_radio
? "OFF" : "ON");
2586 if (disable_radio
) {
2587 iwl4965_scan_cancel(priv
);
2588 /* FIXME: This is a workaround for AP */
2589 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
2590 spin_lock_irqsave(&priv
->lock
, flags
);
2591 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
2592 CSR_UCODE_SW_BIT_RFKILL
);
2593 spin_unlock_irqrestore(&priv
->lock
, flags
);
2594 /* call the host command only if no hw rf-kill set */
2595 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
2596 iwl4965_send_card_state(priv
,
2597 CARD_STATE_CMD_DISABLE
,
2599 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
2601 /* make sure mac80211 stop sending Tx frame */
2602 if (priv
->mac80211_registered
)
2603 ieee80211_stop_queues(priv
->hw
);
2608 spin_lock_irqsave(&priv
->lock
, flags
);
2609 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2611 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
2612 spin_unlock_irqrestore(&priv
->lock
, flags
);
2617 spin_lock_irqsave(&priv
->lock
, flags
);
2618 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
2619 if (!iwl_grab_nic_access(priv
))
2620 iwl_release_nic_access(priv
);
2621 spin_unlock_irqrestore(&priv
->lock
, flags
);
2623 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
2624 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2625 "disabled by HW switch\n");
2629 queue_work(priv
->workqueue
, &priv
->restart
);
2633 void iwl4965_set_decrypted_flag(struct iwl_priv
*priv
, struct sk_buff
*skb
,
2634 u32 decrypt_res
, struct ieee80211_rx_status
*stats
)
2637 le16_to_cpu(((struct ieee80211_hdr
*)skb
->data
)->frame_control
);
2639 if (priv
->active_rxon
.filter_flags
& RXON_FILTER_DIS_DECRYPT_MSK
)
2642 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
2645 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res
);
2646 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
2647 case RX_RES_STATUS_SEC_TYPE_TKIP
:
2648 /* The uCode has got a bad phase 1 Key, pushes the packet.
2649 * Decryption will be done in SW. */
2650 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
2651 RX_RES_STATUS_BAD_KEY_TTAK
)
2654 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
2655 RX_RES_STATUS_BAD_ICV_MIC
)
2656 stats
->flag
|= RX_FLAG_MMIC_ERROR
;
2657 case RX_RES_STATUS_SEC_TYPE_WEP
:
2658 case RX_RES_STATUS_SEC_TYPE_CCMP
:
2659 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
2660 RX_RES_STATUS_DECRYPT_OK
) {
2661 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2662 stats
->flag
|= RX_FLAG_DECRYPTED
;
2672 #define IWL_PACKET_RETRY_TIME HZ
2674 int iwl4965_is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2676 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
2677 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
2678 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
2679 u16
*last_seq
, *last_frag
;
2680 unsigned long *last_time
;
2682 switch (priv
->iw_mode
) {
2683 case IEEE80211_IF_TYPE_IBSS
:{
2684 struct list_head
*p
;
2685 struct iwl4965_ibss_seq
*entry
= NULL
;
2686 u8
*mac
= header
->addr2
;
2687 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
2689 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
2690 entry
= list_entry(p
, struct iwl4965_ibss_seq
, list
);
2691 if (!compare_ether_addr(entry
->mac
, mac
))
2694 if (p
== &priv
->ibss_mac_hash
[index
]) {
2695 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
2697 IWL_ERROR("Cannot malloc new mac entry\n");
2700 memcpy(entry
->mac
, mac
, ETH_ALEN
);
2701 entry
->seq_num
= seq
;
2702 entry
->frag_num
= frag
;
2703 entry
->packet_time
= jiffies
;
2704 list_add(&entry
->list
, &priv
->ibss_mac_hash
[index
]);
2707 last_seq
= &entry
->seq_num
;
2708 last_frag
= &entry
->frag_num
;
2709 last_time
= &entry
->packet_time
;
2712 case IEEE80211_IF_TYPE_STA
:
2713 last_seq
= &priv
->last_seq_num
;
2714 last_frag
= &priv
->last_frag_num
;
2715 last_time
= &priv
->last_packet_time
;
2720 if ((*last_seq
== seq
) &&
2721 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
2722 if (*last_frag
== frag
)
2724 if (*last_frag
+ 1 != frag
)
2725 /* out-of-order fragment */
2731 *last_time
= jiffies
;
2738 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2740 #include "iwl-spectrum.h"
2742 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2743 #define BEACON_TIME_MASK_HIGH 0xFF000000
2744 #define TIME_UNIT 1024
2747 * extended beacon time format
2748 * time in usec will be changed into a 32-bit value in 8:24 format
2749 * the high 1 byte is the beacon counts
2750 * the lower 3 bytes is the time in usec within one beacon interval
2753 static u32
iwl4965_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
2757 u32 interval
= beacon_interval
* 1024;
2759 if (!interval
|| !usec
)
2762 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
2763 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
2765 return (quot
<< 24) + rem
;
2768 /* base is usually what we get from ucode with each received frame,
2769 * the same as HW timer counter counting down
2772 static __le32
iwl4965_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
2774 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
2775 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
2776 u32 interval
= beacon_interval
* TIME_UNIT
;
2777 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
2778 (addon
& BEACON_TIME_MASK_HIGH
);
2780 if (base_low
> addon_low
)
2781 res
+= base_low
- addon_low
;
2782 else if (base_low
< addon_low
) {
2783 res
+= interval
+ base_low
- addon_low
;
2788 return cpu_to_le32(res
);
2791 static int iwl4965_get_measurement(struct iwl_priv
*priv
,
2792 struct ieee80211_measurement_params
*params
,
2795 struct iwl4965_spectrum_cmd spectrum
;
2796 struct iwl4965_rx_packet
*res
;
2797 struct iwl_host_cmd cmd
= {
2798 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
2799 .data
= (void *)&spectrum
,
2800 .meta
.flags
= CMD_WANT_SKB
,
2802 u32 add_time
= le64_to_cpu(params
->start_time
);
2804 int spectrum_resp_status
;
2805 int duration
= le16_to_cpu(params
->duration
);
2807 if (iwl_is_associated(priv
))
2809 iwl4965_usecs_to_beacons(
2810 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
2811 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2813 memset(&spectrum
, 0, sizeof(spectrum
));
2815 spectrum
.channel_count
= cpu_to_le16(1);
2817 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
2818 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
2819 cmd
.len
= sizeof(spectrum
);
2820 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
2822 if (iwl_is_associated(priv
))
2823 spectrum
.start_time
=
2824 iwl4965_add_beacon_time(priv
->last_beacon_time
,
2826 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2828 spectrum
.start_time
= 0;
2830 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
2831 spectrum
.channels
[0].channel
= params
->channel
;
2832 spectrum
.channels
[0].type
= type
;
2833 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
2834 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
2835 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
2837 rc
= iwl_send_cmd_sync(priv
, &cmd
);
2841 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
2842 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
2843 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2847 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
2848 switch (spectrum_resp_status
) {
2849 case 0: /* Command will be handled */
2850 if (res
->u
.spectrum
.id
!= 0xff) {
2852 ("Replaced existing measurement: %d\n",
2853 res
->u
.spectrum
.id
);
2854 priv
->measurement_status
&= ~MEASUREMENT_READY
;
2856 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
2860 case 1: /* Command will not be handled */
2865 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
2871 static void iwl4965_txstatus_to_ieee(struct iwl_priv
*priv
,
2872 struct iwl4965_tx_info
*tx_sta
)
2875 tx_sta
->status
.ack_signal
= 0;
2876 tx_sta
->status
.excessive_retries
= 0;
2877 tx_sta
->status
.queue_length
= 0;
2878 tx_sta
->status
.queue_number
= 0;
2881 ieee80211_tx_status_irqsafe(priv
->hw
,
2882 tx_sta
->skb
[0], &(tx_sta
->status
));
2884 ieee80211_tx_status(priv
->hw
,
2885 tx_sta
->skb
[0], &(tx_sta
->status
));
2887 tx_sta
->skb
[0] = NULL
;
2891 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2893 * When FW advances 'R' index, all entries between old and new 'R' index
2894 * need to be reclaimed. As result, some free space forms. If there is
2895 * enough free space (> low mark), wake the stack that feeds us.
2897 int iwl4965_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
2899 struct iwl4965_tx_queue
*txq
= &priv
->txq
[txq_id
];
2900 struct iwl4965_queue
*q
= &txq
->q
;
2903 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
2904 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2905 "is out of range [0-%d] %d %d.\n", txq_id
,
2906 index
, q
->n_bd
, q
->write_ptr
, q
->read_ptr
);
2910 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
2911 q
->read_ptr
!= index
;
2912 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
2913 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
2914 iwl4965_txstatus_to_ieee(priv
,
2915 &(txq
->txb
[txq
->q
.read_ptr
]));
2916 iwl4965_hw_txq_free_tfd(priv
, txq
);
2917 } else if (nfreed
> 1) {
2918 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
2919 q
->write_ptr
, q
->read_ptr
);
2920 queue_work(priv
->workqueue
, &priv
->restart
);
2925 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2926 (txq_id != IWL_CMD_QUEUE_NUM) &&
2927 priv->mac80211_registered)
2928 ieee80211_wake_queue(priv->hw, txq_id); */
2934 static int iwl4965_is_tx_success(u32 status
)
2936 status
&= TX_STATUS_MSK
;
2937 return (status
== TX_STATUS_SUCCESS
)
2938 || (status
== TX_STATUS_DIRECT_DONE
);
2941 /******************************************************************************
2943 * Generic RX handler implementations
2945 ******************************************************************************/
2946 #ifdef CONFIG_IWL4965_HT
2948 static inline int iwl4965_get_ra_sta_id(struct iwl_priv
*priv
,
2949 struct ieee80211_hdr
*hdr
)
2951 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
2954 u8
*da
= ieee80211_get_DA(hdr
);
2955 return iwl4965_hw_find_station(priv
, da
);
2959 static struct ieee80211_hdr
*iwl4965_tx_queue_get_hdr(
2960 struct iwl_priv
*priv
, int txq_id
, int idx
)
2962 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
2963 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
2964 txb
[idx
].skb
[0]->data
;
2968 static inline u32
iwl4965_get_scd_ssn(struct iwl4965_tx_resp
*tx_resp
)
2970 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
2971 tx_resp
->frame_count
);
2972 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
2977 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2979 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
2980 struct iwl4965_ht_agg
*agg
,
2981 struct iwl4965_tx_resp_agg
*tx_resp
,
2985 struct agg_tx_status
*frame_status
= &tx_resp
->status
;
2986 struct ieee80211_tx_status
*tx_status
= NULL
;
2987 struct ieee80211_hdr
*hdr
= NULL
;
2992 if (agg
->wait_for_ba
)
2993 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2995 agg
->frame_count
= tx_resp
->frame_count
;
2996 agg
->start_idx
= start_idx
;
2997 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3000 /* # frames attempted by Tx command */
3001 if (agg
->frame_count
== 1) {
3002 /* Only one frame was attempted; no block-ack will arrive */
3003 status
= le16_to_cpu(frame_status
[0].status
);
3004 seq
= le16_to_cpu(frame_status
[0].sequence
);
3005 idx
= SEQ_TO_INDEX(seq
);
3006 txq_id
= SEQ_TO_QUEUE(seq
);
3008 /* FIXME: code repetition */
3009 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3010 agg
->frame_count
, agg
->start_idx
, idx
);
3012 tx_status
= &(priv
->txq
[txq_id
].txb
[idx
].status
);
3013 tx_status
->retry_count
= tx_resp
->failure_frame
;
3014 tx_status
->queue_number
= status
& 0xff;
3015 tx_status
->queue_length
= tx_resp
->failure_rts
;
3016 tx_status
->control
.flags
&= ~IEEE80211_TXCTL_AMPDU
;
3017 tx_status
->flags
= iwl4965_is_tx_success(status
)?
3018 IEEE80211_TX_STATUS_ACK
: 0;
3019 iwl4965_hwrate_to_tx_control(priv
,
3020 le32_to_cpu(tx_resp
->rate_n_flags
),
3021 &tx_status
->control
);
3022 /* FIXME: code repetition end */
3024 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3025 status
& 0xff, tx_resp
->failure_frame
);
3026 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3027 iwl4965_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
3029 agg
->wait_for_ba
= 0;
3031 /* Two or more frames were attempted; expect block-ack */
3033 int start
= agg
->start_idx
;
3035 /* Construct bit-map of pending frames within Tx window */
3036 for (i
= 0; i
< agg
->frame_count
; i
++) {
3038 status
= le16_to_cpu(frame_status
[i
].status
);
3039 seq
= le16_to_cpu(frame_status
[i
].sequence
);
3040 idx
= SEQ_TO_INDEX(seq
);
3041 txq_id
= SEQ_TO_QUEUE(seq
);
3043 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
3044 AGG_TX_STATE_ABORT_MSK
))
3047 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3048 agg
->frame_count
, txq_id
, idx
);
3050 hdr
= iwl4965_tx_queue_get_hdr(priv
, txq_id
, idx
);
3052 sc
= le16_to_cpu(hdr
->seq_ctrl
);
3053 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
3054 IWL_ERROR("BUG_ON idx doesn't match seq control"
3055 " idx=%d, seq_idx=%d, seq=%d\n",
3061 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3062 i
, idx
, SEQ_TO_SN(sc
));
3066 sh
= (start
- idx
) + 0xff;
3067 bitmap
= bitmap
<< sh
;
3070 } else if (sh
< -64)
3071 sh
= 0xff - (start
- idx
);
3075 bitmap
= bitmap
<< sh
;
3078 bitmap
|= (1 << sh
);
3079 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3080 start
, (u32
)(bitmap
& 0xFFFFFFFF));
3083 agg
->bitmap
= bitmap
;
3084 agg
->start_idx
= start
;
3085 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
3086 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3087 agg
->frame_count
, agg
->start_idx
,
3088 (unsigned long long)agg
->bitmap
);
3091 agg
->wait_for_ba
= 1;
3098 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3100 static void iwl4965_rx_reply_tx(struct iwl_priv
*priv
,
3101 struct iwl4965_rx_mem_buffer
*rxb
)
3103 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3104 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3105 int txq_id
= SEQ_TO_QUEUE(sequence
);
3106 int index
= SEQ_TO_INDEX(sequence
);
3107 struct iwl4965_tx_queue
*txq
= &priv
->txq
[txq_id
];
3108 struct ieee80211_tx_status
*tx_status
;
3109 struct iwl4965_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
3110 u32 status
= le32_to_cpu(tx_resp
->status
);
3111 #ifdef CONFIG_IWL4965_HT
3112 int tid
= MAX_TID_COUNT
, sta_id
= IWL_INVALID_STATION
;
3113 struct ieee80211_hdr
*hdr
;
3117 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
3118 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3119 "is out of range [0-%d] %d %d\n", txq_id
,
3120 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
3125 #ifdef CONFIG_IWL4965_HT
3126 hdr
= iwl4965_tx_queue_get_hdr(priv
, txq_id
, index
);
3127 qc
= ieee80211_get_qos_ctrl(hdr
);
3130 tid
= le16_to_cpu(*qc
) & 0xf;
3132 sta_id
= iwl4965_get_ra_sta_id(priv
, hdr
);
3133 if (txq
->sched_retry
&& unlikely(sta_id
== IWL_INVALID_STATION
)) {
3134 IWL_ERROR("Station not known\n");
3138 if (txq
->sched_retry
) {
3139 const u32 scd_ssn
= iwl4965_get_scd_ssn(tx_resp
);
3140 struct iwl4965_ht_agg
*agg
= NULL
;
3145 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
3147 iwl4965_tx_status_reply_tx(priv
, agg
,
3148 (struct iwl4965_tx_resp_agg
*)tx_resp
, index
);
3150 if ((tx_resp
->frame_count
== 1) &&
3151 !iwl4965_is_tx_success(status
)) {
3152 /* TODO: send BAR */
3155 if (txq
->q
.read_ptr
!= (scd_ssn
& 0xff)) {
3157 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
3158 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3159 "%d index %d\n", scd_ssn
, index
);
3160 freed
= iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
3161 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
3163 if (iwl4965_queue_space(&txq
->q
) > txq
->q
.low_mark
&&
3164 txq_id
>= 0 && priv
->mac80211_registered
&&
3165 agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
)
3166 ieee80211_wake_queue(priv
->hw
, txq_id
);
3168 iwl4965_check_empty_hw_queue(priv
, sta_id
, tid
, txq_id
);
3171 #endif /* CONFIG_IWL4965_HT */
3172 tx_status
= &(txq
->txb
[txq
->q
.read_ptr
].status
);
3174 tx_status
->retry_count
= tx_resp
->failure_frame
;
3175 tx_status
->queue_number
= status
;
3176 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
3177 tx_status
->queue_length
|= tx_resp
->failure_rts
;
3179 iwl4965_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
3180 iwl4965_hwrate_to_tx_control(priv
, le32_to_cpu(tx_resp
->rate_n_flags
),
3181 &tx_status
->control
);
3183 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3184 "retries %d\n", txq_id
, iwl4965_get_tx_fail_reason(status
),
3185 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
3186 tx_resp
->failure_frame
);
3188 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
3190 int freed
= iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
3191 #ifdef CONFIG_IWL4965_HT
3192 if (tid
!= MAX_TID_COUNT
)
3193 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
3194 if (iwl4965_queue_space(&txq
->q
) > txq
->q
.low_mark
&&
3196 priv
->mac80211_registered
)
3197 ieee80211_wake_queue(priv
->hw
, txq_id
);
3198 if (tid
!= MAX_TID_COUNT
)
3199 iwl4965_check_empty_hw_queue(priv
, sta_id
, tid
, txq_id
);
3202 #ifdef CONFIG_IWL4965_HT
3204 #endif /* CONFIG_IWL4965_HT */
3206 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
3207 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3211 static void iwl4965_rx_reply_alive(struct iwl_priv
*priv
,
3212 struct iwl4965_rx_mem_buffer
*rxb
)
3214 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3215 struct iwl4965_alive_resp
*palive
;
3216 struct delayed_work
*pwork
;
3218 palive
= &pkt
->u
.alive_frame
;
3220 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3222 palive
->is_valid
, palive
->ver_type
,
3223 palive
->ver_subtype
);
3225 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
3226 IWL_DEBUG_INFO("Initialization Alive received.\n");
3227 memcpy(&priv
->card_alive_init
,
3228 &pkt
->u
.alive_frame
,
3229 sizeof(struct iwl4965_init_alive_resp
));
3230 pwork
= &priv
->init_alive_start
;
3232 IWL_DEBUG_INFO("Runtime Alive received.\n");
3233 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
3234 sizeof(struct iwl4965_alive_resp
));
3235 pwork
= &priv
->alive_start
;
3238 /* We delay the ALIVE response by 5ms to
3239 * give the HW RF Kill time to activate... */
3240 if (palive
->is_valid
== UCODE_VALID_OK
)
3241 queue_delayed_work(priv
->workqueue
, pwork
,
3242 msecs_to_jiffies(5));
3244 IWL_WARNING("uCode did not respond OK.\n");
3247 static void iwl4965_rx_reply_add_sta(struct iwl_priv
*priv
,
3248 struct iwl4965_rx_mem_buffer
*rxb
)
3250 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3252 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
3256 static void iwl4965_rx_reply_error(struct iwl_priv
*priv
,
3257 struct iwl4965_rx_mem_buffer
*rxb
)
3259 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3261 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3262 "seq 0x%04X ser 0x%08X\n",
3263 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
3264 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
3265 pkt
->u
.err_resp
.cmd_id
,
3266 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
3267 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
3270 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3272 static void iwl4965_rx_csa(struct iwl_priv
*priv
, struct iwl4965_rx_mem_buffer
*rxb
)
3274 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3275 struct iwl4965_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
3276 struct iwl4965_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
3277 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3278 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
3279 rxon
->channel
= csa
->channel
;
3280 priv
->staging_rxon
.channel
= csa
->channel
;
3283 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
3284 struct iwl4965_rx_mem_buffer
*rxb
)
3286 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3287 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3288 struct iwl4965_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
3290 if (!report
->state
) {
3291 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
3292 "Spectrum Measure Notification: Start\n");
3296 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
3297 priv
->measurement_status
|= MEASUREMENT_READY
;
3301 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv
*priv
,
3302 struct iwl4965_rx_mem_buffer
*rxb
)
3304 #ifdef CONFIG_IWLWIFI_DEBUG
3305 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3306 struct iwl4965_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
3307 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3308 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
3312 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
3313 struct iwl4965_rx_mem_buffer
*rxb
)
3315 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3316 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3317 "notification for %s:\n",
3318 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
3319 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
3322 static void iwl4965_bg_beacon_update(struct work_struct
*work
)
3324 struct iwl_priv
*priv
=
3325 container_of(work
, struct iwl_priv
, beacon_update
);
3326 struct sk_buff
*beacon
;
3328 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3329 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
, NULL
);
3332 IWL_ERROR("update beacon failed\n");
3336 mutex_lock(&priv
->mutex
);
3337 /* new beacon skb is allocated every time; dispose previous.*/
3338 if (priv
->ibss_beacon
)
3339 dev_kfree_skb(priv
->ibss_beacon
);
3341 priv
->ibss_beacon
= beacon
;
3342 mutex_unlock(&priv
->mutex
);
3344 iwl4965_send_beacon_cmd(priv
);
3347 static void iwl4965_rx_beacon_notif(struct iwl_priv
*priv
,
3348 struct iwl4965_rx_mem_buffer
*rxb
)
3350 #ifdef CONFIG_IWLWIFI_DEBUG
3351 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3352 struct iwl4965_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
3353 u8 rate
= iwl4965_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3355 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3356 "tsf %d %d rate %d\n",
3357 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3358 beacon
->beacon_notify_hdr
.failure_frame
,
3359 le32_to_cpu(beacon
->ibss_mgr_status
),
3360 le32_to_cpu(beacon
->high_tsf
),
3361 le32_to_cpu(beacon
->low_tsf
), rate
);
3364 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3365 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3366 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3369 /* Service response to REPLY_SCAN_CMD (0x80) */
3370 static void iwl4965_rx_reply_scan(struct iwl_priv
*priv
,
3371 struct iwl4965_rx_mem_buffer
*rxb
)
3373 #ifdef CONFIG_IWLWIFI_DEBUG
3374 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3375 struct iwl4965_scanreq_notification
*notif
=
3376 (struct iwl4965_scanreq_notification
*)pkt
->u
.raw
;
3378 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3382 /* Service SCAN_START_NOTIFICATION (0x82) */
3383 static void iwl4965_rx_scan_start_notif(struct iwl_priv
*priv
,
3384 struct iwl4965_rx_mem_buffer
*rxb
)
3386 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3387 struct iwl4965_scanstart_notification
*notif
=
3388 (struct iwl4965_scanstart_notification
*)pkt
->u
.raw
;
3389 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3390 IWL_DEBUG_SCAN("Scan start: "
3392 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3394 notif
->band
? "bg" : "a",
3396 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3399 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3400 static void iwl4965_rx_scan_results_notif(struct iwl_priv
*priv
,
3401 struct iwl4965_rx_mem_buffer
*rxb
)
3403 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3404 struct iwl4965_scanresults_notification
*notif
=
3405 (struct iwl4965_scanresults_notification
*)pkt
->u
.raw
;
3407 IWL_DEBUG_SCAN("Scan ch.res: "
3409 "(TSF: 0x%08X:%08X) - %d "
3410 "elapsed=%lu usec (%dms since last)\n",
3412 notif
->band
? "bg" : "a",
3413 le32_to_cpu(notif
->tsf_high
),
3414 le32_to_cpu(notif
->tsf_low
),
3415 le32_to_cpu(notif
->statistics
[0]),
3416 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3417 jiffies_to_msecs(elapsed_jiffies
3418 (priv
->last_scan_jiffies
, jiffies
)));
3420 priv
->last_scan_jiffies
= jiffies
;
3421 priv
->next_scan_jiffies
= 0;
3424 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3425 static void iwl4965_rx_scan_complete_notif(struct iwl_priv
*priv
,
3426 struct iwl4965_rx_mem_buffer
*rxb
)
3428 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3429 struct iwl4965_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3431 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3432 scan_notif
->scanned_channels
,
3433 scan_notif
->tsf_low
,
3434 scan_notif
->tsf_high
, scan_notif
->status
);
3436 /* The HW is no longer scanning */
3437 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3439 /* The scan completion notification came in, so kill that timer... */
3440 cancel_delayed_work(&priv
->scan_check
);
3442 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3443 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3444 jiffies_to_msecs(elapsed_jiffies
3445 (priv
->scan_pass_start
, jiffies
)));
3447 /* Remove this scanned band from the list
3448 * of pending bands to scan */
3451 /* If a request to abort was given, or the scan did not succeed
3452 * then we reset the scan state machine and terminate,
3453 * re-queuing another scan if one has been requested */
3454 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3455 IWL_DEBUG_INFO("Aborted scan completed.\n");
3456 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3458 /* If there are more bands on this scan pass reschedule */
3459 if (priv
->scan_bands
> 0)
3463 priv
->last_scan_jiffies
= jiffies
;
3464 priv
->next_scan_jiffies
= 0;
3465 IWL_DEBUG_INFO("Setting scan to off\n");
3467 clear_bit(STATUS_SCANNING
, &priv
->status
);
3469 IWL_DEBUG_INFO("Scan took %dms\n",
3470 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
3472 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3477 priv
->scan_pass_start
= jiffies
;
3478 queue_work(priv
->workqueue
, &priv
->request_scan
);
3481 /* Handle notification from uCode that card's power state is changing
3482 * due to software, hardware, or critical temperature RFKILL */
3483 static void iwl4965_rx_card_state_notif(struct iwl_priv
*priv
,
3484 struct iwl4965_rx_mem_buffer
*rxb
)
3486 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3487 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
3488 unsigned long status
= priv
->status
;
3490 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3491 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
3492 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
3494 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
3495 RF_CARD_DISABLED
)) {
3497 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3498 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
3500 if (!iwl_grab_nic_access(priv
)) {
3502 priv
, HBUS_TARG_MBX_C
,
3503 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
3505 iwl_release_nic_access(priv
);
3508 if (!(flags
& RXON_CARD_DISABLED
)) {
3509 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
3510 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
3511 if (!iwl_grab_nic_access(priv
)) {
3513 priv
, HBUS_TARG_MBX_C
,
3514 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
3516 iwl_release_nic_access(priv
);
3520 if (flags
& RF_CARD_DISABLED
) {
3521 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3522 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
3523 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3524 if (!iwl_grab_nic_access(priv
))
3525 iwl_release_nic_access(priv
);
3529 if (flags
& HW_CARD_DISABLED
)
3530 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3532 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3535 if (flags
& SW_CARD_DISABLED
)
3536 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3538 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3540 if (!(flags
& RXON_CARD_DISABLED
))
3541 iwl4965_scan_cancel(priv
);
3543 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
3544 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
3545 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
3546 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
3547 queue_work(priv
->workqueue
, &priv
->rf_kill
);
3549 wake_up_interruptible(&priv
->wait_command_queue
);
3553 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3555 * Setup the RX handlers for each of the reply types sent from the uCode
3558 * This function chains into the hardware specific files for them to setup
3559 * any hardware specific handlers as well.
3561 static void iwl4965_setup_rx_handlers(struct iwl_priv
*priv
)
3563 priv
->rx_handlers
[REPLY_ALIVE
] = iwl4965_rx_reply_alive
;
3564 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl4965_rx_reply_add_sta
;
3565 priv
->rx_handlers
[REPLY_ERROR
] = iwl4965_rx_reply_error
;
3566 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl4965_rx_csa
;
3567 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
3568 iwl4965_rx_spectrum_measure_notif
;
3569 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl4965_rx_pm_sleep_notif
;
3570 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
3571 iwl4965_rx_pm_debug_statistics_notif
;
3572 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl4965_rx_beacon_notif
;
3575 * The same handler is used for both the REPLY to a discrete
3576 * statistics request from the host as well as for the periodic
3577 * statistics notifications (after received beacons) from the uCode.
3579 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl4965_hw_rx_statistics
;
3580 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl4965_hw_rx_statistics
;
3582 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl4965_rx_reply_scan
;
3583 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl4965_rx_scan_start_notif
;
3584 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
3585 iwl4965_rx_scan_results_notif
;
3586 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
3587 iwl4965_rx_scan_complete_notif
;
3588 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl4965_rx_card_state_notif
;
3589 priv
->rx_handlers
[REPLY_TX
] = iwl4965_rx_reply_tx
;
3591 /* Set up hardware specific Rx handlers */
3592 iwl4965_hw_rx_handler_setup(priv
);
3596 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3597 * @rxb: Rx buffer to reclaim
3599 * If an Rx buffer has an async callback associated with it the callback
3600 * will be executed. The attached skb (if present) will only be freed
3601 * if the callback returns 1
3603 static void iwl4965_tx_cmd_complete(struct iwl_priv
*priv
,
3604 struct iwl4965_rx_mem_buffer
*rxb
)
3606 struct iwl4965_rx_packet
*pkt
= (struct iwl4965_rx_packet
*)rxb
->skb
->data
;
3607 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3608 int txq_id
= SEQ_TO_QUEUE(sequence
);
3609 int index
= SEQ_TO_INDEX(sequence
);
3610 int huge
= sequence
& SEQ_HUGE_FRAME
;
3612 struct iwl_cmd
*cmd
;
3614 /* If a Tx command is being handled and it isn't in the actual
3615 * command queue then there a command routing bug has been introduced
3616 * in the queue management code. */
3617 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
3618 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3619 txq_id
, pkt
->hdr
.cmd
);
3620 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
3622 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
3623 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
3625 /* Input error checking is done when commands are added to queue. */
3626 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
3627 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
3629 } else if (cmd
->meta
.u
.callback
&&
3630 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
3633 iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
3635 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
3636 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
3637 wake_up_interruptible(&priv
->wait_command_queue
);
3641 /************************** RX-FUNCTIONS ****************************/
3643 * Rx theory of operation
3645 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3646 * each of which point to Receive Buffers to be filled by 4965. These get
3647 * used not only for Rx frames, but for any command response or notification
3648 * from the 4965. The driver and 4965 manage the Rx buffers by means
3649 * of indexes into the circular buffer.
3652 * The host/firmware share two index registers for managing the Rx buffers.
3654 * The READ index maps to the first position that the firmware may be writing
3655 * to -- the driver can read up to (but not including) this position and get
3657 * The READ index is managed by the firmware once the card is enabled.
3659 * The WRITE index maps to the last position the driver has read from -- the
3660 * position preceding WRITE is the last slot the firmware can place a packet.
3662 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3665 * During initialization, the host sets up the READ queue position to the first
3666 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3668 * When the firmware places a packet in a buffer, it will advance the READ index
3669 * and fire the RX interrupt. The driver can then query the READ index and
3670 * process as many packets as possible, moving the WRITE index forward as it
3671 * resets the Rx queue buffers with new memory.
3673 * The management in the driver is as follows:
3674 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3675 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3676 * to replenish the iwl->rxq->rx_free.
3677 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3678 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3679 * 'processed' and 'read' driver indexes as well)
3680 * + A received packet is processed and handed to the kernel network stack,
3681 * detached from the iwl->rxq. The driver 'processed' index is updated.
3682 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3683 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3684 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3685 * were enough free buffers and RX_STALLED is set it is cleared.
3690 * iwl4965_rx_queue_alloc() Allocates rx_free
3691 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3692 * iwl4965_rx_queue_restock
3693 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3694 * queue, updates firmware pointers, and updates
3695 * the WRITE index. If insufficient rx_free buffers
3696 * are available, schedules iwl4965_rx_replenish
3698 * -- enable interrupts --
3699 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3700 * READ INDEX, detaching the SKB from the pool.
3701 * Moves the packet buffer from queue to rx_used.
3702 * Calls iwl4965_rx_queue_restock to refill any empty
3709 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3711 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue
*q
)
3713 int s
= q
->read
- q
->write
;
3716 /* keep some buffer to not confuse full and empty queue */
3724 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3726 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*q
)
3730 unsigned long flags
;
3732 spin_lock_irqsave(&q
->lock
, flags
);
3734 if (q
->need_update
== 0)
3737 /* If power-saving is in use, make sure device is awake */
3738 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
3739 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3741 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
3742 iwl_set_bit(priv
, CSR_GP_CNTRL
,
3743 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
3747 rc
= iwl_grab_nic_access(priv
);
3751 /* Device expects a multiple of 8 */
3752 iwl_write_direct32(priv
, FH_RSCSR_CHNL0_WPTR
,
3754 iwl_release_nic_access(priv
);
3756 /* Else device is assumed to be awake */
3758 /* Device expects a multiple of 8 */
3759 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
3765 spin_unlock_irqrestore(&q
->lock
, flags
);
3770 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3772 static inline __le32
iwl4965_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
3773 dma_addr_t dma_addr
)
3775 return cpu_to_le32((u32
)(dma_addr
>> 8));
3780 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3782 * If there are slots in the RX queue that need to be restocked,
3783 * and we have free pre-allocated buffers, fill the ranks as much
3784 * as we can, pulling from rx_free.
3786 * This moves the 'write' index forward to catch up with 'processed', and
3787 * also updates the memory address in the firmware to reference the new
3790 static int iwl4965_rx_queue_restock(struct iwl_priv
*priv
)
3792 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3793 struct list_head
*element
;
3794 struct iwl4965_rx_mem_buffer
*rxb
;
3795 unsigned long flags
;
3798 spin_lock_irqsave(&rxq
->lock
, flags
);
3799 write
= rxq
->write
& ~0x7;
3800 while ((iwl4965_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
3801 /* Get next free Rx buffer, remove from free list */
3802 element
= rxq
->rx_free
.next
;
3803 rxb
= list_entry(element
, struct iwl4965_rx_mem_buffer
, list
);
3806 /* Point to Rx buffer via next RBD in circular buffer */
3807 rxq
->bd
[rxq
->write
] = iwl4965_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
3808 rxq
->queue
[rxq
->write
] = rxb
;
3809 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
3812 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3813 /* If the pre-allocated buffer pool is dropping low, schedule to
3815 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
3816 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
3819 /* If we've added more space for the firmware to place data, tell it.
3820 * Increment device's write pointer in multiples of 8. */
3821 if ((write
!= (rxq
->write
& ~0x7))
3822 || (abs(rxq
->write
- rxq
->read
) > 7)) {
3823 spin_lock_irqsave(&rxq
->lock
, flags
);
3824 rxq
->need_update
= 1;
3825 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3826 rc
= iwl4965_rx_queue_update_write_ptr(priv
, rxq
);
3835 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3837 * When moving to rx_free an SKB is allocated for the slot.
3839 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3840 * This is called as a scheduled work item (except for during initialization)
3842 static void iwl4965_rx_allocate(struct iwl_priv
*priv
)
3844 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3845 struct list_head
*element
;
3846 struct iwl4965_rx_mem_buffer
*rxb
;
3847 unsigned long flags
;
3848 spin_lock_irqsave(&rxq
->lock
, flags
);
3849 while (!list_empty(&rxq
->rx_used
)) {
3850 element
= rxq
->rx_used
.next
;
3851 rxb
= list_entry(element
, struct iwl4965_rx_mem_buffer
, list
);
3853 /* Alloc a new receive buffer */
3855 alloc_skb(priv
->hw_setting
.rx_buf_size
,
3856 __GFP_NOWARN
| GFP_ATOMIC
);
3858 if (net_ratelimit())
3859 printk(KERN_CRIT DRV_NAME
3860 ": Can not allocate SKB buffers\n");
3861 /* We don't reschedule replenish work here -- we will
3862 * call the restock method and if it still needs
3863 * more buffers it will schedule replenish */
3866 priv
->alloc_rxb_skb
++;
3869 /* Get physical address of RB/SKB */
3871 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
3872 priv
->hw_setting
.rx_buf_size
, PCI_DMA_FROMDEVICE
);
3873 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
3876 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3880 * this should be called while priv->lock is locked
3882 static void __iwl4965_rx_replenish(void *data
)
3884 struct iwl_priv
*priv
= data
;
3886 iwl4965_rx_allocate(priv
);
3887 iwl4965_rx_queue_restock(priv
);
3891 void iwl4965_rx_replenish(void *data
)
3893 struct iwl_priv
*priv
= data
;
3894 unsigned long flags
;
3896 iwl4965_rx_allocate(priv
);
3898 spin_lock_irqsave(&priv
->lock
, flags
);
3899 iwl4965_rx_queue_restock(priv
);
3900 spin_unlock_irqrestore(&priv
->lock
, flags
);
3903 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3904 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3905 * This free routine walks the list of POOL entries and if SKB is set to
3906 * non NULL it is unmapped and freed
3908 static void iwl4965_rx_queue_free(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*rxq
)
3911 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
3912 if (rxq
->pool
[i
].skb
!= NULL
) {
3913 pci_unmap_single(priv
->pci_dev
,
3914 rxq
->pool
[i
].dma_addr
,
3915 priv
->hw_setting
.rx_buf_size
,
3916 PCI_DMA_FROMDEVICE
);
3917 dev_kfree_skb(rxq
->pool
[i
].skb
);
3921 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
3926 int iwl4965_rx_queue_alloc(struct iwl_priv
*priv
)
3928 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3929 struct pci_dev
*dev
= priv
->pci_dev
;
3932 spin_lock_init(&rxq
->lock
);
3933 INIT_LIST_HEAD(&rxq
->rx_free
);
3934 INIT_LIST_HEAD(&rxq
->rx_used
);
3936 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3937 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
3941 /* Fill the rx_used queue with _all_ of the Rx buffers */
3942 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
3943 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
3945 /* Set us so that we have processed and used all buffers, but have
3946 * not restocked the Rx queue with fresh buffers */
3947 rxq
->read
= rxq
->write
= 0;
3948 rxq
->free_count
= 0;
3949 rxq
->need_update
= 0;
3953 void iwl4965_rx_queue_reset(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*rxq
)
3955 unsigned long flags
;
3957 spin_lock_irqsave(&rxq
->lock
, flags
);
3958 INIT_LIST_HEAD(&rxq
->rx_free
);
3959 INIT_LIST_HEAD(&rxq
->rx_used
);
3960 /* Fill the rx_used queue with _all_ of the Rx buffers */
3961 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
3962 /* In the reset function, these buffers may have been allocated
3963 * to an SKB, so we need to unmap and free potential storage */
3964 if (rxq
->pool
[i
].skb
!= NULL
) {
3965 pci_unmap_single(priv
->pci_dev
,
3966 rxq
->pool
[i
].dma_addr
,
3967 priv
->hw_setting
.rx_buf_size
,
3968 PCI_DMA_FROMDEVICE
);
3969 priv
->alloc_rxb_skb
--;
3970 dev_kfree_skb(rxq
->pool
[i
].skb
);
3971 rxq
->pool
[i
].skb
= NULL
;
3973 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
3976 /* Set us so that we have processed and used all buffers, but have
3977 * not restocked the Rx queue with fresh buffers */
3978 rxq
->read
= rxq
->write
= 0;
3979 rxq
->free_count
= 0;
3980 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3983 /* Convert linear signal-to-noise ratio into dB */
3984 static u8 ratio2dB
[100] = {
3985 /* 0 1 2 3 4 5 6 7 8 9 */
3986 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3987 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3988 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3989 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3990 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3991 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3992 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3993 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3994 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3995 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3998 /* Calculates a relative dB value from a ratio of linear
3999 * (i.e. not dB) signal levels.
4000 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4001 int iwl4965_calc_db_from_ratio(int sig_ratio
)
4003 /* 1000:1 or higher just report as 60 dB */
4004 if (sig_ratio
>= 1000)
4007 /* 100:1 or higher, divide by 10 and use table,
4008 * add 20 dB to make up for divide by 10 */
4009 if (sig_ratio
>= 100)
4010 return (20 + (int)ratio2dB
[sig_ratio
/10]);
4012 /* We shouldn't see this */
4016 /* Use table for ratios 1:1 - 99:1 */
4017 return (int)ratio2dB
[sig_ratio
];
4020 #define PERFECT_RSSI (-20) /* dBm */
4021 #define WORST_RSSI (-95) /* dBm */
4022 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4024 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4025 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4026 * about formulas used below. */
4027 int iwl4965_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
4030 int degradation
= PERFECT_RSSI
- rssi_dbm
;
4032 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4033 * as indicator; formula is (signal dbm - noise dbm).
4034 * SNR at or above 40 is a great signal (100%).
4035 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4036 * Weakest usable signal is usually 10 - 15 dB SNR. */
4038 if (rssi_dbm
- noise_dbm
>= 40)
4040 else if (rssi_dbm
< noise_dbm
)
4042 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
4044 /* Else use just the signal level.
4045 * This formula is a least squares fit of data points collected and
4046 * compared with a reference system that had a percentage (%) display
4047 * for signal quality. */
4049 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
4050 (15 * RSSI_RANGE
+ 62 * degradation
)) /
4051 (RSSI_RANGE
* RSSI_RANGE
);
4055 else if (sig_qual
< 1)
4062 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4064 * Uses the priv->rx_handlers callback function array to invoke
4065 * the appropriate handlers, including command responses,
4066 * frame-received notifications, and other notifications.
4068 static void iwl4965_rx_handle(struct iwl_priv
*priv
)
4070 struct iwl4965_rx_mem_buffer
*rxb
;
4071 struct iwl4965_rx_packet
*pkt
;
4072 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
4075 unsigned long flags
;
4079 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4080 * buffer that the driver may process (last buffer filled by ucode). */
4081 r
= iwl4965_hw_get_rx_read(priv
);
4084 /* Rx interrupt, but nothing sent from uCode */
4086 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
4088 if (iwl4965_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
4092 rxb
= rxq
->queue
[i
];
4094 /* If an RXB doesn't have a Rx queue slot associated with it,
4095 * then a bug has been introduced in the queue refilling
4096 * routines -- catch it here */
4097 BUG_ON(rxb
== NULL
);
4099 rxq
->queue
[i
] = NULL
;
4101 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
4102 priv
->hw_setting
.rx_buf_size
,
4103 PCI_DMA_FROMDEVICE
);
4104 pkt
= (struct iwl4965_rx_packet
*)rxb
->skb
->data
;
4106 /* Reclaim a command buffer only if this packet is a response
4107 * to a (driver-originated) command.
4108 * If the packet (e.g. Rx frame) originated from uCode,
4109 * there is no command buffer to reclaim.
4110 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4111 * but apparently a few don't get set; catch them here. */
4112 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
4113 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
4114 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
4115 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
4116 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
4117 (pkt
->hdr
.cmd
!= REPLY_TX
);
4119 /* Based on type of command response or notification,
4120 * handle those that need handling via function in
4121 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4122 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
4123 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4124 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
4125 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
4126 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
4128 /* No handling needed */
4129 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
4130 "r %d i %d No handler needed for %s, 0x%02x\n",
4131 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
4136 /* Invoke any callbacks, transfer the skb to caller, and
4137 * fire off the (possibly) blocking iwl_send_cmd()
4138 * as we reclaim the driver command queue */
4139 if (rxb
&& rxb
->skb
)
4140 iwl4965_tx_cmd_complete(priv
, rxb
);
4142 IWL_WARNING("Claim null rxb?\n");
4145 /* For now we just don't re-use anything. We can tweak this
4146 * later to try and re-use notification packets and SKBs that
4147 * fail to Rx correctly */
4148 if (rxb
->skb
!= NULL
) {
4149 priv
->alloc_rxb_skb
--;
4150 dev_kfree_skb_any(rxb
->skb
);
4154 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
4155 priv
->hw_setting
.rx_buf_size
,
4156 PCI_DMA_FROMDEVICE
);
4157 spin_lock_irqsave(&rxq
->lock
, flags
);
4158 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
4159 spin_unlock_irqrestore(&rxq
->lock
, flags
);
4160 i
= (i
+ 1) & RX_QUEUE_MASK
;
4161 /* If there are a lot of unused frames,
4162 * restock the Rx queue so ucode wont assert. */
4167 __iwl4965_rx_replenish(priv
);
4173 /* Backtrack one entry */
4175 iwl4965_rx_queue_restock(priv
);
4179 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4181 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
4182 struct iwl4965_tx_queue
*txq
)
4186 int txq_id
= txq
->q
.id
;
4188 if (txq
->need_update
== 0)
4191 /* if we're trying to save power */
4192 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
4193 /* wake up nic if it's powered down ...
4194 * uCode will wake up, and interrupt us again, so next
4195 * time we'll skip this part. */
4196 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
4198 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
4199 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
4200 iwl_set_bit(priv
, CSR_GP_CNTRL
,
4201 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
4205 /* restore this queue's parameters in nic hardware. */
4206 rc
= iwl_grab_nic_access(priv
);
4209 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
4210 txq
->q
.write_ptr
| (txq_id
<< 8));
4211 iwl_release_nic_access(priv
);
4213 /* else not in power-save mode, uCode will never sleep when we're
4214 * trying to tx (during RFKILL, we're not trying to tx). */
4216 iwl_write32(priv
, HBUS_TARG_WRPTR
,
4217 txq
->q
.write_ptr
| (txq_id
<< 8));
4219 txq
->need_update
= 0;
4224 #ifdef CONFIG_IWLWIFI_DEBUG
4225 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd
*rxon
)
4227 DECLARE_MAC_BUF(mac
);
4229 IWL_DEBUG_RADIO("RX CONFIG:\n");
4230 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
4231 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
4232 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
4233 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4234 le32_to_cpu(rxon
->filter_flags
));
4235 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
4236 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4237 rxon
->ofdm_basic_rates
);
4238 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
4239 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4240 print_mac(mac
, rxon
->node_addr
));
4241 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4242 print_mac(mac
, rxon
->bssid_addr
));
4243 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
4247 static void iwl4965_enable_interrupts(struct iwl_priv
*priv
)
4249 IWL_DEBUG_ISR("Enabling interrupts\n");
4250 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
4251 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
4254 /* call this function to flush any scheduled tasklet */
4255 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
4257 /* wait to make sure we flush pedding tasklet*/
4258 synchronize_irq(priv
->pci_dev
->irq
);
4259 tasklet_kill(&priv
->irq_tasklet
);
4262 static inline void iwl4965_disable_interrupts(struct iwl_priv
*priv
)
4264 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
4266 /* disable interrupts from uCode/NIC to host */
4267 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4269 /* acknowledge/clear/reset any interrupts still pending
4270 * from uCode or flow handler (Rx/Tx DMA) */
4271 iwl_write32(priv
, CSR_INT
, 0xffffffff);
4272 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
4273 IWL_DEBUG_ISR("Disabled interrupts\n");
4276 static const char *desc_lookup(int i
)
4284 return "BAD_CHECKSUM";
4286 return "NMI_INTERRUPT";
4290 return "FATAL_ERROR";
4296 #define ERROR_START_OFFSET (1 * sizeof(u32))
4297 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4299 static void iwl4965_dump_nic_error_log(struct iwl_priv
*priv
)
4302 u32 desc
, time
, count
, base
, data1
;
4303 u32 blink1
, blink2
, ilink1
, ilink2
;
4306 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
4308 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
4309 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
4313 rc
= iwl_grab_nic_access(priv
);
4315 IWL_WARNING("Can not read from adapter at this time.\n");
4319 count
= iwl_read_targ_mem(priv
, base
);
4321 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
4322 IWL_ERROR("Start IWL Error Log Dump:\n");
4323 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv
->status
, count
);
4326 desc
= iwl_read_targ_mem(priv
, base
+ 1 * sizeof(u32
));
4327 blink1
= iwl_read_targ_mem(priv
, base
+ 3 * sizeof(u32
));
4328 blink2
= iwl_read_targ_mem(priv
, base
+ 4 * sizeof(u32
));
4329 ilink1
= iwl_read_targ_mem(priv
, base
+ 5 * sizeof(u32
));
4330 ilink2
= iwl_read_targ_mem(priv
, base
+ 6 * sizeof(u32
));
4331 data1
= iwl_read_targ_mem(priv
, base
+ 7 * sizeof(u32
));
4332 data2
= iwl_read_targ_mem(priv
, base
+ 8 * sizeof(u32
));
4333 line
= iwl_read_targ_mem(priv
, base
+ 9 * sizeof(u32
));
4334 time
= iwl_read_targ_mem(priv
, base
+ 11 * sizeof(u32
));
4336 IWL_ERROR("Desc Time "
4337 "data1 data2 line\n");
4338 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4339 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
4340 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4341 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
4344 iwl_release_nic_access(priv
);
4347 #define EVENT_START_OFFSET (4 * sizeof(u32))
4350 * iwl4965_print_event_log - Dump error event log to syslog
4352 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4354 static void iwl4965_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4355 u32 num_events
, u32 mode
)
4358 u32 base
; /* SRAM byte address of event log header */
4359 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4360 u32 ptr
; /* SRAM byte address of log data */
4361 u32 ev
, time
, data
; /* event log data */
4363 if (num_events
== 0)
4366 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4369 event_size
= 2 * sizeof(u32
);
4371 event_size
= 3 * sizeof(u32
);
4373 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4375 /* "time" is actually "data" for mode 0 (no timestamp).
4376 * place event id # at far right for easier visual parsing. */
4377 for (i
= 0; i
< num_events
; i
++) {
4378 ev
= iwl_read_targ_mem(priv
, ptr
);
4380 time
= iwl_read_targ_mem(priv
, ptr
);
4383 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4385 data
= iwl_read_targ_mem(priv
, ptr
);
4387 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4392 static void iwl4965_dump_nic_event_log(struct iwl_priv
*priv
)
4395 u32 base
; /* SRAM byte address of event log header */
4396 u32 capacity
; /* event log capacity in # entries */
4397 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4398 u32 num_wraps
; /* # times uCode wrapped to top of log */
4399 u32 next_entry
; /* index of next entry to be written by uCode */
4400 u32 size
; /* # entries that we'll print */
4402 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4403 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
4404 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4408 rc
= iwl_grab_nic_access(priv
);
4410 IWL_WARNING("Can not read from adapter at this time.\n");
4414 /* event log header */
4415 capacity
= iwl_read_targ_mem(priv
, base
);
4416 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
4417 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
4418 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
4420 size
= num_wraps
? capacity
: next_entry
;
4422 /* bail out if nothing in log */
4424 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4425 iwl_release_nic_access(priv
);
4429 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4432 /* if uCode has wrapped back to top of log, start at the oldest entry,
4433 * i.e the next one that uCode would fill. */
4435 iwl4965_print_event_log(priv
, next_entry
,
4436 capacity
- next_entry
, mode
);
4438 /* (then/else) start at top of log */
4439 iwl4965_print_event_log(priv
, 0, next_entry
, mode
);
4441 iwl_release_nic_access(priv
);
4445 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4447 static void iwl4965_irq_handle_error(struct iwl_priv
*priv
)
4449 /* Set the FW error flag -- cleared on iwl4965_down */
4450 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4452 /* Cancel currently queued command. */
4453 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4455 #ifdef CONFIG_IWLWIFI_DEBUG
4456 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4457 iwl4965_dump_nic_error_log(priv
);
4458 iwl4965_dump_nic_event_log(priv
);
4459 iwl4965_print_rx_config_cmd(&priv
->staging_rxon
);
4463 wake_up_interruptible(&priv
->wait_command_queue
);
4465 /* Keep the restart process from trying to send host
4466 * commands by clearing the INIT status bit */
4467 clear_bit(STATUS_READY
, &priv
->status
);
4469 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4470 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4471 "Restarting adapter due to uCode error.\n");
4473 if (iwl_is_associated(priv
)) {
4474 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4475 sizeof(priv
->recovery_rxon
));
4476 priv
->error_recovering
= 1;
4478 queue_work(priv
->workqueue
, &priv
->restart
);
4482 static void iwl4965_error_recovery(struct iwl_priv
*priv
)
4484 unsigned long flags
;
4486 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4487 sizeof(priv
->staging_rxon
));
4488 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4489 iwl4965_commit_rxon(priv
);
4491 iwl4965_rxon_add_station(priv
, priv
->bssid
, 1);
4493 spin_lock_irqsave(&priv
->lock
, flags
);
4494 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4495 priv
->error_recovering
= 0;
4496 spin_unlock_irqrestore(&priv
->lock
, flags
);
4499 static void iwl4965_irq_tasklet(struct iwl_priv
*priv
)
4501 u32 inta
, handled
= 0;
4503 unsigned long flags
;
4504 #ifdef CONFIG_IWLWIFI_DEBUG
4508 spin_lock_irqsave(&priv
->lock
, flags
);
4510 /* Ack/clear/reset pending uCode interrupts.
4511 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4512 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4513 inta
= iwl_read32(priv
, CSR_INT
);
4514 iwl_write32(priv
, CSR_INT
, inta
);
4516 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4517 * Any new interrupts that happen after this, either while we're
4518 * in this tasklet, or later, will show up in next ISR/tasklet. */
4519 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4520 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4522 #ifdef CONFIG_IWLWIFI_DEBUG
4523 if (iwl_debug_level
& IWL_DL_ISR
) {
4524 /* just for debug */
4525 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
4526 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4527 inta
, inta_mask
, inta_fh
);
4531 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4532 * atomic, make sure that inta covers all the interrupts that
4533 * we've discovered, even if FH interrupt came in just after
4534 * reading CSR_INT. */
4535 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
4536 inta
|= CSR_INT_BIT_FH_RX
;
4537 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
4538 inta
|= CSR_INT_BIT_FH_TX
;
4540 /* Now service all interrupt bits discovered above. */
4541 if (inta
& CSR_INT_BIT_HW_ERR
) {
4542 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4544 /* Tell the device to stop sending interrupts */
4545 iwl4965_disable_interrupts(priv
);
4547 iwl4965_irq_handle_error(priv
);
4549 handled
|= CSR_INT_BIT_HW_ERR
;
4551 spin_unlock_irqrestore(&priv
->lock
, flags
);
4556 #ifdef CONFIG_IWLWIFI_DEBUG
4557 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4558 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4559 if (inta
& CSR_INT_BIT_SCD
)
4560 IWL_DEBUG_ISR("Scheduler finished to transmit "
4561 "the frame/frames.\n");
4563 /* Alive notification via Rx interrupt will do the real work */
4564 if (inta
& CSR_INT_BIT_ALIVE
)
4565 IWL_DEBUG_ISR("Alive interrupt\n");
4568 /* Safely ignore these bits for debug checks below */
4569 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
4571 /* HW RF KILL switch toggled */
4572 if (inta
& CSR_INT_BIT_RF_KILL
) {
4574 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
4575 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
4578 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
4579 "RF_KILL bit toggled to %s.\n",
4580 hw_rf_kill
? "disable radio":"enable radio");
4582 /* Queue restart only if RF_KILL switch was set to "kill"
4583 * when we loaded driver, and is now set to "enable".
4584 * After we're Alive, RF_KILL gets handled by
4585 * iwl4965_rx_card_state_notif() */
4586 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
)) {
4587 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4588 queue_work(priv
->workqueue
, &priv
->restart
);
4591 handled
|= CSR_INT_BIT_RF_KILL
;
4594 /* Chip got too hot and stopped itself */
4595 if (inta
& CSR_INT_BIT_CT_KILL
) {
4596 IWL_ERROR("Microcode CT kill error detected.\n");
4597 handled
|= CSR_INT_BIT_CT_KILL
;
4600 /* Error detected by uCode */
4601 if (inta
& CSR_INT_BIT_SW_ERR
) {
4602 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4604 iwl4965_irq_handle_error(priv
);
4605 handled
|= CSR_INT_BIT_SW_ERR
;
4608 /* uCode wakes up after power-down sleep */
4609 if (inta
& CSR_INT_BIT_WAKEUP
) {
4610 IWL_DEBUG_ISR("Wakeup interrupt\n");
4611 iwl4965_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
4612 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
4613 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
4614 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
4615 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
4616 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
4617 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
4619 handled
|= CSR_INT_BIT_WAKEUP
;
4622 /* All uCode command responses, including Tx command responses,
4623 * Rx "responses" (frame-received notification), and other
4624 * notifications from uCode come through here*/
4625 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
4626 iwl4965_rx_handle(priv
);
4627 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
4630 if (inta
& CSR_INT_BIT_FH_TX
) {
4631 IWL_DEBUG_ISR("Tx interrupt\n");
4632 handled
|= CSR_INT_BIT_FH_TX
;
4635 if (inta
& ~handled
)
4636 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
4638 if (inta
& ~CSR_INI_SET_MASK
) {
4639 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4640 inta
& ~CSR_INI_SET_MASK
);
4641 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
4644 /* Re-enable all interrupts */
4645 /* only Re-enable if diabled by irq */
4646 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
4647 iwl4965_enable_interrupts(priv
);
4649 #ifdef CONFIG_IWLWIFI_DEBUG
4650 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4651 inta
= iwl_read32(priv
, CSR_INT
);
4652 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
4653 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4654 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4655 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
4658 spin_unlock_irqrestore(&priv
->lock
, flags
);
4661 static irqreturn_t
iwl4965_isr(int irq
, void *data
)
4663 struct iwl_priv
*priv
= data
;
4664 u32 inta
, inta_mask
;
4669 spin_lock(&priv
->lock
);
4671 /* Disable (but don't clear!) interrupts here to avoid
4672 * back-to-back ISRs and sporadic interrupts from our NIC.
4673 * If we have something to service, the tasklet will re-enable ints.
4674 * If we *don't* have something, we'll re-enable before leaving here. */
4675 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4676 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4678 /* Discover which interrupts are active/pending */
4679 inta
= iwl_read32(priv
, CSR_INT
);
4680 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4682 /* Ignore interrupt if there's nothing in NIC to service.
4683 * This may be due to IRQ shared with another device,
4684 * or due to sporadic interrupts thrown from our NIC. */
4685 if (!inta
&& !inta_fh
) {
4686 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4690 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
4691 /* Hardware disappeared. It might have already raised
4693 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
4697 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4698 inta
, inta_mask
, inta_fh
);
4700 inta
&= ~CSR_INT_BIT_SCD
;
4702 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4703 if (likely(inta
|| inta_fh
))
4704 tasklet_schedule(&priv
->irq_tasklet
);
4707 spin_unlock(&priv
->lock
);
4711 /* re-enable interrupts here since we don't have anything to service. */
4712 /* only Re-enable if diabled by irq */
4713 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
4714 iwl4965_enable_interrupts(priv
);
4715 spin_unlock(&priv
->lock
);
4719 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4720 * sending probe req. This should be set long enough to hear probe responses
4721 * from more than one AP. */
4722 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4723 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4725 /* For faster active scanning, scan will move to the next channel if fewer than
4726 * PLCP_QUIET_THRESH packets are heard on this channel within
4727 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4728 * time if it's a quiet channel (nothing responded to our probe, and there's
4729 * no other traffic).
4730 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4731 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4732 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4734 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4735 * Must be set longer than active dwell time.
4736 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4737 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4738 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4739 #define IWL_PASSIVE_DWELL_BASE (100)
4740 #define IWL_CHANNEL_TUNE_TIME 5
4742 static inline u16
iwl4965_get_active_dwell_time(struct iwl_priv
*priv
,
4743 enum ieee80211_band band
)
4745 if (band
== IEEE80211_BAND_5GHZ
)
4746 return IWL_ACTIVE_DWELL_TIME_52
;
4748 return IWL_ACTIVE_DWELL_TIME_24
;
4751 static u16
iwl4965_get_passive_dwell_time(struct iwl_priv
*priv
,
4752 enum ieee80211_band band
)
4754 u16 active
= iwl4965_get_active_dwell_time(priv
, band
);
4755 u16 passive
= (band
!= IEEE80211_BAND_5GHZ
) ?
4756 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
4757 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
4759 if (iwl_is_associated(priv
)) {
4760 /* If we're associated, we clamp the maximum passive
4761 * dwell time to be 98% of the beacon interval (minus
4762 * 2 * channel tune time) */
4763 passive
= priv
->beacon_int
;
4764 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
4765 passive
= IWL_PASSIVE_DWELL_BASE
;
4766 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
4769 if (passive
<= active
)
4770 passive
= active
+ 1;
4775 static int iwl4965_get_channels_for_scan(struct iwl_priv
*priv
,
4776 enum ieee80211_band band
,
4777 u8 is_active
, u8 direct_mask
,
4778 struct iwl4965_scan_channel
*scan_ch
)
4780 const struct ieee80211_channel
*channels
= NULL
;
4781 const struct ieee80211_supported_band
*sband
;
4782 const struct iwl_channel_info
*ch_info
;
4783 u16 passive_dwell
= 0;
4784 u16 active_dwell
= 0;
4787 sband
= iwl4965_get_hw_mode(priv
, band
);
4791 channels
= sband
->channels
;
4793 active_dwell
= iwl4965_get_active_dwell_time(priv
, band
);
4794 passive_dwell
= iwl4965_get_passive_dwell_time(priv
, band
);
4796 for (i
= 0, added
= 0; i
< sband
->n_channels
; i
++) {
4797 if (channels
[i
].flags
& IEEE80211_CHAN_DISABLED
)
4800 if (ieee80211_frequency_to_channel(channels
[i
].center_freq
) ==
4801 le16_to_cpu(priv
->active_rxon
.channel
)) {
4802 if (iwl_is_associated(priv
)) {
4804 ("Skipping current channel %d\n",
4805 le16_to_cpu(priv
->active_rxon
.channel
));
4808 } else if (priv
->only_active_channel
)
4811 scan_ch
->channel
= ieee80211_frequency_to_channel(channels
[i
].center_freq
);
4813 ch_info
= iwl_get_channel_info(priv
, band
,
4815 if (!is_channel_valid(ch_info
)) {
4816 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4821 if (!is_active
|| is_channel_passive(ch_info
) ||
4822 (channels
[i
].flags
& IEEE80211_CHAN_PASSIVE_SCAN
))
4823 scan_ch
->type
= 0; /* passive */
4825 scan_ch
->type
= 1; /* active */
4827 if (scan_ch
->type
& 1)
4828 scan_ch
->type
|= (direct_mask
<< 1);
4830 if (is_channel_narrow(ch_info
))
4831 scan_ch
->type
|= (1 << 7);
4833 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
4834 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
4836 /* Set txpower levels to defaults */
4837 scan_ch
->tpc
.dsp_atten
= 110;
4838 /* scan_pwr_info->tpc.dsp_atten; */
4840 /*scan_pwr_info->tpc.tx_gain; */
4841 if (band
== IEEE80211_BAND_5GHZ
)
4842 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
4844 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
4845 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4847 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4851 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4853 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
4854 (scan_ch
->type
& 1) ?
4855 active_dwell
: passive_dwell
);
4861 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
4865 static void iwl4965_init_hw_rates(struct iwl_priv
*priv
,
4866 struct ieee80211_rate
*rates
)
4870 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
4871 rates
[i
].bitrate
= iwl4965_rates
[i
].ieee
* 5;
4872 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
4873 rates
[i
].hw_value_short
= i
;
4875 if ((i
> IWL_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
4877 * If CCK != 1M then set short preamble rate flag.
4880 (iwl4965_rates
[i
].plcp
== IWL_RATE_1M_PLCP
) ?
4881 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
4887 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4889 int iwl4965_init_geos(struct iwl_priv
*priv
)
4891 struct iwl_channel_info
*ch
;
4892 struct ieee80211_supported_band
*sband
;
4893 struct ieee80211_channel
*channels
;
4894 struct ieee80211_channel
*geo_ch
;
4895 struct ieee80211_rate
*rates
;
4898 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
||
4899 priv
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
) {
4900 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4901 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
4905 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
4906 priv
->channel_count
, GFP_KERNEL
);
4910 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_RATE_COUNT
+ 1)),
4917 /* 5.2GHz channels start after the 2.4GHz channels */
4918 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
4919 sband
->channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
4921 sband
->bitrates
= &rates
[IWL_FIRST_OFDM_RATE
];
4922 sband
->n_bitrates
= IWL_RATE_COUNT
- IWL_FIRST_OFDM_RATE
;
4924 iwl4965_init_ht_hw_capab(priv
, &sband
->ht_info
, IEEE80211_BAND_5GHZ
);
4926 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
4927 sband
->channels
= channels
;
4929 sband
->bitrates
= rates
;
4930 sband
->n_bitrates
= IWL_RATE_COUNT
;
4932 iwl4965_init_ht_hw_capab(priv
, &sband
->ht_info
, IEEE80211_BAND_2GHZ
);
4934 priv
->ieee_channels
= channels
;
4935 priv
->ieee_rates
= rates
;
4937 iwl4965_init_hw_rates(priv
, rates
);
4939 for (i
= 0; i
< priv
->channel_count
; i
++) {
4940 ch
= &priv
->channel_info
[i
];
4942 /* FIXME: might be removed if scan is OK */
4943 if (!is_channel_valid(ch
))
4946 if (is_channel_a_band(ch
))
4947 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
4949 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
4951 geo_ch
= &sband
->channels
[sband
->n_channels
++];
4953 geo_ch
->center_freq
= ieee80211_channel_to_frequency(ch
->channel
);
4954 geo_ch
->max_power
= ch
->max_power_avg
;
4955 geo_ch
->max_antenna_gain
= 0xff;
4956 geo_ch
->hw_value
= ch
->channel
;
4958 if (is_channel_valid(ch
)) {
4959 if (!(ch
->flags
& EEPROM_CHANNEL_IBSS
))
4960 geo_ch
->flags
|= IEEE80211_CHAN_NO_IBSS
;
4962 if (!(ch
->flags
& EEPROM_CHANNEL_ACTIVE
))
4963 geo_ch
->flags
|= IEEE80211_CHAN_PASSIVE_SCAN
;
4965 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
4966 geo_ch
->flags
|= IEEE80211_CHAN_RADAR
;
4968 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
4969 priv
->max_channel_txpower_limit
=
4972 geo_ch
->flags
|= IEEE80211_CHAN_DISABLED
;
4975 /* Save flags for reg domain usage */
4976 geo_ch
->orig_flags
= geo_ch
->flags
;
4978 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4979 ch
->channel
, geo_ch
->center_freq
,
4980 is_channel_a_band(ch
) ? "5.2" : "2.4",
4981 geo_ch
->flags
& IEEE80211_CHAN_DISABLED
?
4982 "restricted" : "valid",
4986 if ((priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
== 0) &&
4987 priv
->cfg
->sku
& IWL_SKU_A
) {
4988 printk(KERN_INFO DRV_NAME
4989 ": Incorrectly detected BG card as ABG. Please send "
4990 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4991 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
4992 priv
->cfg
->sku
&= ~IWL_SKU_A
;
4995 printk(KERN_INFO DRV_NAME
4996 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4997 priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
,
4998 priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
);
5000 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
5001 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
5002 &priv
->bands
[IEEE80211_BAND_2GHZ
];
5003 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
5004 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
5005 &priv
->bands
[IEEE80211_BAND_5GHZ
];
5007 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5013 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5015 void iwl4965_free_geos(struct iwl_priv
*priv
)
5017 kfree(priv
->ieee_channels
);
5018 kfree(priv
->ieee_rates
);
5019 clear_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
5022 /******************************************************************************
5024 * uCode download functions
5026 ******************************************************************************/
5028 static void iwl4965_dealloc_ucode_pci(struct iwl_priv
*priv
)
5030 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
5031 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
5032 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
5033 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
5034 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
5035 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
5039 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5040 * looking at all data.
5042 static int iwl4965_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
,
5050 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5052 rc
= iwl_grab_nic_access(priv
);
5056 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
5059 for (; len
> 0; len
-= sizeof(u32
), image
++) {
5060 /* read data comes through single port, auto-incr addr */
5061 /* NOTE: Use the debugless read so we don't flood kernel log
5062 * if IWL_DL_IO is set */
5063 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
5064 if (val
!= le32_to_cpu(*image
)) {
5065 IWL_ERROR("uCode INST section is invalid at "
5066 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5067 save_len
- len
, val
, le32_to_cpu(*image
));
5075 iwl_release_nic_access(priv
);
5079 ("ucode image in INSTRUCTION memory is good\n");
5086 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5087 * using sample data 100 bytes apart. If these sample points are good,
5088 * it's a pretty good bet that everything between them is good, too.
5090 static int iwl4965_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
5097 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
5099 rc
= iwl_grab_nic_access(priv
);
5103 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
5104 /* read data comes through single port, auto-incr addr */
5105 /* NOTE: Use the debugless read so we don't flood kernel log
5106 * if IWL_DL_IO is set */
5107 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
5108 i
+ RTC_INST_LOWER_BOUND
);
5109 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
5110 if (val
!= le32_to_cpu(*image
)) {
5111 #if 0 /* Enable this if you want to see details */
5112 IWL_ERROR("uCode INST section is invalid at "
5113 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5123 iwl_release_nic_access(priv
);
5130 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5131 * and verify its contents
5133 static int iwl4965_verify_ucode(struct iwl_priv
*priv
)
5140 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5141 len
= priv
->ucode_boot
.len
;
5142 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
5144 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5148 /* Try initialize */
5149 image
= (__le32
*)priv
->ucode_init
.v_addr
;
5150 len
= priv
->ucode_init
.len
;
5151 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
5153 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5157 /* Try runtime/protocol */
5158 image
= (__le32
*)priv
->ucode_code
.v_addr
;
5159 len
= priv
->ucode_code
.len
;
5160 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
5162 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5166 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5168 /* Since nothing seems to match, show first several data entries in
5169 * instruction SRAM, so maybe visual inspection will give a clue.
5170 * Selection of bootstrap image (vs. other images) is arbitrary. */
5171 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
5172 len
= priv
->ucode_boot
.len
;
5173 rc
= iwl4965_verify_inst_full(priv
, image
, len
);
5178 static void iwl4965_nic_start(struct iwl_priv
*priv
)
5180 /* Remove all resets to allow NIC to operate */
5181 iwl_write32(priv
, CSR_RESET
, 0);
5186 * iwl4965_read_ucode - Read uCode images from disk file.
5188 * Copy into buffers for card to fetch via bus-mastering
5190 static int iwl4965_read_ucode(struct iwl_priv
*priv
)
5192 struct iwl4965_ucode
*ucode
;
5194 const struct firmware
*ucode_raw
;
5195 const char *name
= priv
->cfg
->fw_name
;
5198 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
5200 /* Ask kernel firmware_class module to get the boot firmware off disk.
5201 * request_firmware() is synchronous, file is in memory on return. */
5202 ret
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
5204 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5209 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5210 name
, ucode_raw
->size
);
5212 /* Make sure that we got at least our header! */
5213 if (ucode_raw
->size
< sizeof(*ucode
)) {
5214 IWL_ERROR("File size way too small!\n");
5219 /* Data from ucode file: header followed by uCode images */
5220 ucode
= (void *)ucode_raw
->data
;
5222 ver
= le32_to_cpu(ucode
->ver
);
5223 inst_size
= le32_to_cpu(ucode
->inst_size
);
5224 data_size
= le32_to_cpu(ucode
->data_size
);
5225 init_size
= le32_to_cpu(ucode
->init_size
);
5226 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
5227 boot_size
= le32_to_cpu(ucode
->boot_size
);
5229 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
5230 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5232 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5234 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5236 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5238 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5241 /* Verify size of file vs. image size info in file's header */
5242 if (ucode_raw
->size
< sizeof(*ucode
) +
5243 inst_size
+ data_size
+ init_size
+
5244 init_data_size
+ boot_size
) {
5246 IWL_DEBUG_INFO("uCode file size %d too small\n",
5247 (int)ucode_raw
->size
);
5252 /* Verify that uCode images will fit in card's SRAM */
5253 if (inst_size
> IWL_MAX_INST_SIZE
) {
5254 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5260 if (data_size
> IWL_MAX_DATA_SIZE
) {
5261 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5266 if (init_size
> IWL_MAX_INST_SIZE
) {
5268 ("uCode init instr len %d too large to fit in\n",
5273 if (init_data_size
> IWL_MAX_DATA_SIZE
) {
5275 ("uCode init data len %d too large to fit in\n",
5280 if (boot_size
> IWL_MAX_BSM_SIZE
) {
5282 ("uCode boot instr len %d too large to fit in\n",
5288 /* Allocate ucode buffers for card's bus-master loading ... */
5290 /* Runtime instructions and 2 copies of data:
5291 * 1) unmodified from disk
5292 * 2) backup cache for save/restore during power-downs */
5293 priv
->ucode_code
.len
= inst_size
;
5294 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
5296 priv
->ucode_data
.len
= data_size
;
5297 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
5299 priv
->ucode_data_backup
.len
= data_size
;
5300 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
5302 /* Initialization instructions and data */
5303 if (init_size
&& init_data_size
) {
5304 priv
->ucode_init
.len
= init_size
;
5305 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
5307 priv
->ucode_init_data
.len
= init_data_size
;
5308 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
5310 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
5314 /* Bootstrap (instructions only, no data) */
5316 priv
->ucode_boot
.len
= boot_size
;
5317 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
5319 if (!priv
->ucode_boot
.v_addr
)
5323 /* Copy images into buffers for card's bus-master reads ... */
5325 /* Runtime instructions (first block of data in file) */
5326 src
= &ucode
->data
[0];
5327 len
= priv
->ucode_code
.len
;
5328 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len
);
5329 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
5330 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5331 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
5333 /* Runtime data (2nd block)
5334 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
5335 src
= &ucode
->data
[inst_size
];
5336 len
= priv
->ucode_data
.len
;
5337 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len
);
5338 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
5339 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
5341 /* Initialization instructions (3rd block) */
5343 src
= &ucode
->data
[inst_size
+ data_size
];
5344 len
= priv
->ucode_init
.len
;
5345 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5347 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
5350 /* Initialization data (4th block) */
5351 if (init_data_size
) {
5352 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
5353 len
= priv
->ucode_init_data
.len
;
5354 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5356 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
5359 /* Bootstrap instructions (5th block) */
5360 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
5361 len
= priv
->ucode_boot
.len
;
5362 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len
);
5363 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
5365 /* We have our copies now, allow OS release its copies */
5366 release_firmware(ucode_raw
);
5370 IWL_ERROR("failed to allocate pci memory\n");
5372 iwl4965_dealloc_ucode_pci(priv
);
5375 release_firmware(ucode_raw
);
5383 * iwl4965_set_ucode_ptrs - Set uCode address location
5385 * Tell initialization uCode where to find runtime uCode.
5387 * BSM registers initially contain pointers to initialization uCode.
5388 * We need to replace them to load runtime uCode inst and data,
5389 * and to save runtime data when powering down.
5391 static int iwl4965_set_ucode_ptrs(struct iwl_priv
*priv
)
5396 unsigned long flags
;
5398 /* bits 35:4 for 4965 */
5399 pinst
= priv
->ucode_code
.p_addr
>> 4;
5400 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
5402 spin_lock_irqsave(&priv
->lock
, flags
);
5403 rc
= iwl_grab_nic_access(priv
);
5405 spin_unlock_irqrestore(&priv
->lock
, flags
);
5409 /* Tell bootstrap uCode where to find image to load */
5410 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
5411 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
5412 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
5413 priv
->ucode_data
.len
);
5415 /* Inst bytecount must be last to set up, bit 31 signals uCode
5416 * that all new ptr/size info is in place */
5417 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
5418 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
5420 iwl_release_nic_access(priv
);
5422 spin_unlock_irqrestore(&priv
->lock
, flags
);
5424 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5430 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5432 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5434 * The 4965 "initialize" ALIVE reply contains calibration data for:
5435 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5436 * (3945 does not contain this data).
5438 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5440 static void iwl4965_init_alive_start(struct iwl_priv
*priv
)
5442 /* Check alive response for "valid" sign from uCode */
5443 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
5444 /* We had an error bringing up the hardware, so take it
5445 * all the way back down so we can try again */
5446 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5450 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5451 * This is a paranoid check, because we would not have gotten the
5452 * "initialize" alive if code weren't properly loaded. */
5453 if (iwl4965_verify_ucode(priv
)) {
5454 /* Runtime instruction load was bad;
5455 * take it all the way back down so we can try again */
5456 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5460 /* Calculate temperature */
5461 priv
->temperature
= iwl4965_get_temperature(priv
);
5463 /* Send pointers to protocol/runtime uCode image ... init code will
5464 * load and launch runtime uCode, which will send us another "Alive"
5466 IWL_DEBUG_INFO("Initialization Alive received.\n");
5467 if (iwl4965_set_ucode_ptrs(priv
)) {
5468 /* Runtime instruction load won't happen;
5469 * take it all the way back down so we can try again */
5470 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5476 queue_work(priv
->workqueue
, &priv
->restart
);
5481 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5482 * from protocol/runtime uCode (initialization uCode's
5483 * Alive gets handled by iwl4965_init_alive_start()).
5485 static void iwl4965_alive_start(struct iwl_priv
*priv
)
5489 IWL_DEBUG_INFO("Runtime Alive received.\n");
5491 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
5492 /* We had an error bringing up the hardware, so take it
5493 * all the way back down so we can try again */
5494 IWL_DEBUG_INFO("Alive failed.\n");
5498 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5499 * This is a paranoid check, because we would not have gotten the
5500 * "runtime" alive if code weren't properly loaded. */
5501 if (iwl4965_verify_ucode(priv
)) {
5502 /* Runtime instruction load was bad;
5503 * take it all the way back down so we can try again */
5504 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5508 iwlcore_clear_stations_table(priv
);
5510 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
5512 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5517 /* After the ALIVE response, we can send host commands to 4965 uCode */
5518 set_bit(STATUS_ALIVE
, &priv
->status
);
5520 /* Clear out the uCode error bit if it is set */
5521 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
5523 if (iwl_is_rfkill(priv
))
5526 ieee80211_start_queues(priv
->hw
);
5528 priv
->active_rate
= priv
->rates_mask
;
5529 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
5531 iwl4965_send_power_mode(priv
, IWL_POWER_LEVEL(priv
->power_mode
));
5533 if (iwl_is_associated(priv
)) {
5534 struct iwl4965_rxon_cmd
*active_rxon
=
5535 (struct iwl4965_rxon_cmd
*)(&priv
->active_rxon
);
5537 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
5538 sizeof(priv
->staging_rxon
));
5539 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
5541 /* Initialize our rx_config data */
5542 iwl4965_connection_init_rx_config(priv
);
5543 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
5546 /* Configure Bluetooth device coexistence support */
5547 iwl4965_send_bt_config(priv
);
5549 /* Configure the adapter for unassociated operation */
5550 iwl4965_commit_rxon(priv
);
5552 /* At this point, the NIC is initialized and operational */
5553 priv
->notif_missed_beacons
= 0;
5555 iwl4965_rf_kill_ct_config(priv
);
5557 iwl_leds_register(priv
);
5559 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5560 set_bit(STATUS_READY
, &priv
->status
);
5561 wake_up_interruptible(&priv
->wait_command_queue
);
5563 if (priv
->error_recovering
)
5564 iwl4965_error_recovery(priv
);
5566 iwlcore_low_level_notify(priv
, IWLCORE_START_EVT
);
5567 ieee80211_notify_mac(priv
->hw
, IEEE80211_NOTIFY_RE_ASSOC
);
5571 queue_work(priv
->workqueue
, &priv
->restart
);
5574 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
);
5576 static void __iwl4965_down(struct iwl_priv
*priv
)
5578 unsigned long flags
;
5579 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5580 struct ieee80211_conf
*conf
= NULL
;
5582 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
5584 conf
= ieee80211_get_hw_conf(priv
->hw
);
5587 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5589 iwl_leds_unregister(priv
);
5591 iwlcore_low_level_notify(priv
, IWLCORE_STOP_EVT
);
5593 iwlcore_clear_stations_table(priv
);
5595 /* Unblock any waiting calls */
5596 wake_up_interruptible_all(&priv
->wait_command_queue
);
5598 /* Wipe out the EXIT_PENDING status bit if we are not actually
5599 * exiting the module */
5601 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5603 /* stop and reset the on-board processor */
5604 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
5606 /* tell the device to stop sending interrupts */
5607 spin_lock_irqsave(&priv
->lock
, flags
);
5608 iwl4965_disable_interrupts(priv
);
5609 spin_unlock_irqrestore(&priv
->lock
, flags
);
5610 iwl_synchronize_irq(priv
);
5612 if (priv
->mac80211_registered
)
5613 ieee80211_stop_queues(priv
->hw
);
5615 /* If we have not previously called iwl4965_init() then
5616 * clear all bits but the RF Kill and SUSPEND bits and return */
5617 if (!iwl_is_init(priv
)) {
5618 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
5620 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
5622 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
5623 STATUS_GEO_CONFIGURED
|
5624 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
5629 /* ...otherwise clear out all the status bits but the RF Kill and
5630 * SUSPEND bits and continue taking the NIC down. */
5631 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
5633 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
5635 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
5636 STATUS_GEO_CONFIGURED
|
5637 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
5639 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
5642 spin_lock_irqsave(&priv
->lock
, flags
);
5643 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
5644 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
5645 spin_unlock_irqrestore(&priv
->lock
, flags
);
5647 iwl4965_hw_txq_ctx_stop(priv
);
5648 iwl4965_hw_rxq_stop(priv
);
5650 spin_lock_irqsave(&priv
->lock
, flags
);
5651 if (!iwl_grab_nic_access(priv
)) {
5652 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
5653 APMG_CLK_VAL_DMA_CLK_RQT
);
5654 iwl_release_nic_access(priv
);
5656 spin_unlock_irqrestore(&priv
->lock
, flags
);
5660 iwl4965_hw_nic_stop_master(priv
);
5661 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
5662 iwl4965_hw_nic_reset(priv
);
5665 memset(&priv
->card_alive
, 0, sizeof(struct iwl4965_alive_resp
));
5667 if (priv
->ibss_beacon
)
5668 dev_kfree_skb(priv
->ibss_beacon
);
5669 priv
->ibss_beacon
= NULL
;
5671 /* clear out any free frames */
5672 iwl4965_clear_free_frames(priv
);
5675 static void iwl4965_down(struct iwl_priv
*priv
)
5677 mutex_lock(&priv
->mutex
);
5678 __iwl4965_down(priv
);
5679 mutex_unlock(&priv
->mutex
);
5681 iwl4965_cancel_deferred_work(priv
);
5684 #define MAX_HW_RESTARTS 5
5686 static int __iwl4965_up(struct iwl_priv
*priv
)
5691 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
5692 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5696 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
5697 IWL_WARNING("Radio disabled by SW RF kill (module "
5699 iwl_rfkill_set_hw_state(priv
);
5703 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
5704 IWL_ERROR("ucode not available for device bringup\n");
5708 /* If platform's RF_KILL switch is NOT set to KILL */
5709 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
5710 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
5711 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
5713 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
5714 if (!test_bit(STATUS_IN_SUSPEND
, &priv
->status
)) {
5715 iwl_rfkill_set_hw_state(priv
);
5716 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5721 iwl_rfkill_set_hw_state(priv
);
5722 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
5724 ret
= priv
->cfg
->ops
->lib
->hw_nic_init(priv
);
5726 IWL_ERROR("Unable to init nic\n");
5730 /* make sure rfkill handshake bits are cleared */
5731 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5732 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
5733 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
5735 /* clear (again), then enable host interrupts */
5736 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
5737 iwl4965_enable_interrupts(priv
);
5739 /* really make sure rfkill handshake bits are cleared */
5740 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5741 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5743 /* Copy original ucode data image from disk into backup cache.
5744 * This will be used to initialize the on-board processor's
5745 * data SRAM for a clean start when the runtime program first loads. */
5746 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
5747 priv
->ucode_data
.len
);
5749 /* We return success when we resume from suspend and rf_kill is on. */
5750 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
5753 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
5755 iwlcore_clear_stations_table(priv
);
5757 /* load bootstrap state machine,
5758 * load bootstrap program into processor's memory,
5759 * prepare to load the "initialize" uCode */
5760 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
5763 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret
);
5767 /* start card; "initialize" will load runtime ucode */
5768 iwl4965_nic_start(priv
);
5770 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
5775 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5776 __iwl4965_down(priv
);
5778 /* tried to restart and config the device for as long as our
5779 * patience could withstand */
5780 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
5785 /*****************************************************************************
5787 * Workqueue callbacks
5789 *****************************************************************************/
5791 static void iwl4965_bg_init_alive_start(struct work_struct
*data
)
5793 struct iwl_priv
*priv
=
5794 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
5796 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5799 mutex_lock(&priv
->mutex
);
5800 iwl4965_init_alive_start(priv
);
5801 mutex_unlock(&priv
->mutex
);
5804 static void iwl4965_bg_alive_start(struct work_struct
*data
)
5806 struct iwl_priv
*priv
=
5807 container_of(data
, struct iwl_priv
, alive_start
.work
);
5809 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5812 mutex_lock(&priv
->mutex
);
5813 iwl4965_alive_start(priv
);
5814 mutex_unlock(&priv
->mutex
);
5817 static void iwl4965_bg_rf_kill(struct work_struct
*work
)
5819 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
5821 wake_up_interruptible(&priv
->wait_command_queue
);
5823 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5826 mutex_lock(&priv
->mutex
);
5828 if (!iwl_is_rfkill(priv
)) {
5829 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
5830 "HW and/or SW RF Kill no longer active, restarting "
5832 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5833 queue_work(priv
->workqueue
, &priv
->restart
);
5835 /* make sure mac80211 stop sending Tx frame */
5836 if (priv
->mac80211_registered
)
5837 ieee80211_stop_queues(priv
->hw
);
5839 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
5840 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5841 "disabled by SW switch\n");
5843 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5844 "Kill switch must be turned off for "
5845 "wireless networking to work.\n");
5847 iwl_rfkill_set_hw_state(priv
);
5849 mutex_unlock(&priv
->mutex
);
5852 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5854 static void iwl4965_bg_scan_check(struct work_struct
*data
)
5856 struct iwl_priv
*priv
=
5857 container_of(data
, struct iwl_priv
, scan_check
.work
);
5859 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5862 mutex_lock(&priv
->mutex
);
5863 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
5864 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
5865 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
5866 "Scan completion watchdog resetting adapter (%dms)\n",
5867 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
5869 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5870 iwl4965_send_scan_abort(priv
);
5872 mutex_unlock(&priv
->mutex
);
5875 static void iwl4965_bg_request_scan(struct work_struct
*data
)
5877 struct iwl_priv
*priv
=
5878 container_of(data
, struct iwl_priv
, request_scan
);
5879 struct iwl_host_cmd cmd
= {
5880 .id
= REPLY_SCAN_CMD
,
5881 .len
= sizeof(struct iwl4965_scan_cmd
),
5882 .meta
.flags
= CMD_SIZE_HUGE
,
5884 struct iwl4965_scan_cmd
*scan
;
5885 struct ieee80211_conf
*conf
= NULL
;
5887 enum ieee80211_band band
;
5891 conf
= ieee80211_get_hw_conf(priv
->hw
);
5893 mutex_lock(&priv
->mutex
);
5895 if (!iwl_is_ready(priv
)) {
5896 IWL_WARNING("request scan called when driver not ready.\n");
5900 /* Make sure the scan wasn't cancelled before this queued work
5901 * was given the chance to run... */
5902 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
5905 /* This should never be called or scheduled if there is currently
5906 * a scan active in the hardware. */
5907 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
5908 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5909 "Ignoring second request.\n");
5914 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
5915 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5919 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
5920 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5924 if (iwl_is_rfkill(priv
)) {
5925 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5929 if (!test_bit(STATUS_READY
, &priv
->status
)) {
5930 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5934 if (!priv
->scan_bands
) {
5935 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5940 priv
->scan
= kmalloc(sizeof(struct iwl4965_scan_cmd
) +
5941 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
5948 memset(scan
, 0, sizeof(struct iwl4965_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
5950 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
5951 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
5953 if (iwl_is_associated(priv
)) {
5956 u32 suspend_time
= 100;
5957 u32 scan_suspend_time
= 100;
5958 unsigned long flags
;
5960 IWL_DEBUG_INFO("Scanning while associated...\n");
5962 spin_lock_irqsave(&priv
->lock
, flags
);
5963 interval
= priv
->beacon_int
;
5964 spin_unlock_irqrestore(&priv
->lock
, flags
);
5966 scan
->suspend_time
= 0;
5967 scan
->max_out_time
= cpu_to_le32(200 * 1024);
5969 interval
= suspend_time
;
5971 extra
= (suspend_time
/ interval
) << 22;
5972 scan_suspend_time
= (extra
|
5973 ((suspend_time
% interval
) * 1024));
5974 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
5975 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5976 scan_suspend_time
, interval
);
5979 /* We should add the ability for user to lock to PASSIVE ONLY */
5980 if (priv
->one_direct_scan
) {
5982 ("Kicking off one direct scan for '%s'\n",
5983 iwl4965_escape_essid(priv
->direct_ssid
,
5984 priv
->direct_ssid_len
));
5985 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
5986 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
5987 memcpy(scan
->direct_scan
[0].ssid
,
5988 priv
->direct_ssid
, priv
->direct_ssid_len
);
5990 } else if (!iwl_is_associated(priv
) && priv
->essid_len
) {
5991 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
5992 scan
->direct_scan
[0].len
= priv
->essid_len
;
5993 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
5999 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
6000 scan
->tx_cmd
.sta_id
= priv
->hw_setting
.bcast_sta_id
;
6001 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
6004 switch (priv
->scan_bands
) {
6006 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
6007 scan
->tx_cmd
.rate_n_flags
=
6008 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
6009 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
6011 scan
->good_CRC_th
= 0;
6012 band
= IEEE80211_BAND_2GHZ
;
6016 scan
->tx_cmd
.rate_n_flags
=
6017 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
6018 RATE_MCS_ANT_B_MSK
);
6019 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
6020 band
= IEEE80211_BAND_5GHZ
;
6024 IWL_WARNING("Invalid scan band count\n");
6028 /* We don't build a direct scan probe request; the uCode will do
6029 * that based on the direct_mask added to each channel entry */
6030 cmd_len
= iwl4965_fill_probe_req(priv
, band
,
6031 (struct ieee80211_mgmt
*)scan
->data
,
6032 IWL_MAX_SCAN_SIZE
- sizeof(*scan
), 0);
6034 scan
->tx_cmd
.len
= cpu_to_le16(cmd_len
);
6035 /* select Rx chains */
6037 /* Force use of chains B and C (0x6) for scan Rx.
6038 * Avoid A (0x1) because of its off-channel reception on A-band.
6039 * MIMO is not used here, but value is required to make uCode happy. */
6040 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
6041 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
6042 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
6043 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
6045 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
6046 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
6050 ("Initiating direct scan for %s.\n",
6051 iwl4965_escape_essid(priv
->essid
, priv
->essid_len
));
6052 scan
->channel_count
=
6053 iwl4965_get_channels_for_scan(
6054 priv
, band
, 1, /* active */
6056 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
6058 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6059 scan
->channel_count
=
6060 iwl4965_get_channels_for_scan(
6061 priv
, band
, 0, /* passive */
6063 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
6066 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
6067 scan
->channel_count
* sizeof(struct iwl4965_scan_channel
);
6069 scan
->len
= cpu_to_le16(cmd
.len
);
6071 set_bit(STATUS_SCAN_HW
, &priv
->status
);
6072 ret
= iwl_send_cmd_sync(priv
, &cmd
);
6076 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
6077 IWL_SCAN_CHECK_WATCHDOG
);
6079 mutex_unlock(&priv
->mutex
);
6083 /* inform mac80211 scan aborted */
6084 queue_work(priv
->workqueue
, &priv
->scan_completed
);
6085 mutex_unlock(&priv
->mutex
);
6088 static void iwl4965_bg_up(struct work_struct
*data
)
6090 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
6092 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6095 mutex_lock(&priv
->mutex
);
6097 mutex_unlock(&priv
->mutex
);
6100 static void iwl4965_bg_restart(struct work_struct
*data
)
6102 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
6104 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6108 queue_work(priv
->workqueue
, &priv
->up
);
6111 static void iwl4965_bg_rx_replenish(struct work_struct
*data
)
6113 struct iwl_priv
*priv
=
6114 container_of(data
, struct iwl_priv
, rx_replenish
);
6116 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6119 mutex_lock(&priv
->mutex
);
6120 iwl4965_rx_replenish(priv
);
6121 mutex_unlock(&priv
->mutex
);
6124 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6126 static void iwl4965_bg_post_associate(struct work_struct
*data
)
6128 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
6129 post_associate
.work
);
6130 struct ieee80211_conf
*conf
= NULL
;
6132 DECLARE_MAC_BUF(mac
);
6134 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
6135 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
6139 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6141 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
6144 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6147 mutex_lock(&priv
->mutex
);
6149 if (!priv
->vif
|| !priv
->is_open
) {
6150 mutex_unlock(&priv
->mutex
);
6153 iwl4965_scan_cancel_timeout(priv
, 200);
6155 conf
= ieee80211_get_hw_conf(priv
->hw
);
6157 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6158 iwl4965_commit_rxon(priv
);
6160 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl4965_rxon_time_cmd
));
6161 iwl4965_setup_rxon_timing(priv
);
6162 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
6163 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
6165 IWL_WARNING("REPLY_RXON_TIMING failed - "
6166 "Attempting to continue.\n");
6168 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
6170 #ifdef CONFIG_IWL4965_HT
6171 if (priv
->current_ht_config
.is_ht
)
6172 iwl4965_set_rxon_ht(priv
, &priv
->current_ht_config
);
6173 #endif /* CONFIG_IWL4965_HT*/
6174 iwl4965_set_rxon_chain(priv
);
6175 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
6177 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6178 priv
->assoc_id
, priv
->beacon_int
);
6180 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
6181 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
6183 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6185 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
6186 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
6187 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
6189 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
6191 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
6192 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
6196 iwl4965_commit_rxon(priv
);
6198 switch (priv
->iw_mode
) {
6199 case IEEE80211_IF_TYPE_STA
:
6200 iwl4965_rate_scale_init(priv
->hw
, IWL_AP_ID
);
6203 case IEEE80211_IF_TYPE_IBSS
:
6205 /* clear out the station table */
6206 iwlcore_clear_stations_table(priv
);
6208 iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0);
6209 iwl4965_rxon_add_station(priv
, priv
->bssid
, 0);
6210 iwl4965_rate_scale_init(priv
->hw
, IWL_STA_ID
);
6211 iwl4965_send_beacon_cmd(priv
);
6216 IWL_ERROR("%s Should not be called in %d mode\n",
6217 __FUNCTION__
, priv
->iw_mode
);
6221 iwl4965_sequence_reset(priv
);
6223 #ifdef CONFIG_IWL4965_SENSITIVITY
6224 /* Enable Rx differential gain and sensitivity calibrations */
6225 iwl4965_chain_noise_reset(priv
);
6226 priv
->start_calib
= 1;
6227 #endif /* CONFIG_IWL4965_SENSITIVITY */
6229 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
6230 priv
->assoc_station_added
= 1;
6232 iwl4965_activate_qos(priv
, 0);
6234 /* we have just associated, don't start scan too early */
6235 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
6236 mutex_unlock(&priv
->mutex
);
6239 static void iwl4965_bg_abort_scan(struct work_struct
*work
)
6241 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, abort_scan
);
6243 if (!iwl_is_ready(priv
))
6246 mutex_lock(&priv
->mutex
);
6248 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
6249 iwl4965_send_scan_abort(priv
);
6251 mutex_unlock(&priv
->mutex
);
6254 static int iwl4965_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
);
6256 static void iwl4965_bg_scan_completed(struct work_struct
*work
)
6258 struct iwl_priv
*priv
=
6259 container_of(work
, struct iwl_priv
, scan_completed
);
6261 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
6263 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6266 if (test_bit(STATUS_CONF_PENDING
, &priv
->status
))
6267 iwl4965_mac_config(priv
->hw
, ieee80211_get_hw_conf(priv
->hw
));
6269 ieee80211_scan_completed(priv
->hw
);
6271 /* Since setting the TXPOWER may have been deferred while
6272 * performing the scan, fire one off */
6273 mutex_lock(&priv
->mutex
);
6274 iwl4965_hw_reg_send_txpower(priv
);
6275 mutex_unlock(&priv
->mutex
);
6278 /*****************************************************************************
6280 * mac80211 entry point functions
6282 *****************************************************************************/
6284 #define UCODE_READY_TIMEOUT (2 * HZ)
6286 static int iwl4965_mac_start(struct ieee80211_hw
*hw
)
6288 struct iwl_priv
*priv
= hw
->priv
;
6291 IWL_DEBUG_MAC80211("enter\n");
6293 if (pci_enable_device(priv
->pci_dev
)) {
6294 IWL_ERROR("Fail to pci_enable_device\n");
6297 pci_restore_state(priv
->pci_dev
);
6298 pci_enable_msi(priv
->pci_dev
);
6300 ret
= request_irq(priv
->pci_dev
->irq
, iwl4965_isr
, IRQF_SHARED
,
6303 IWL_ERROR("Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
6304 goto out_disable_msi
;
6307 /* we should be verifying the device is ready to be opened */
6308 mutex_lock(&priv
->mutex
);
6310 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl4965_rxon_cmd
));
6311 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6312 * ucode filename and max sizes are card-specific. */
6314 if (!priv
->ucode_code
.len
) {
6315 ret
= iwl4965_read_ucode(priv
);
6317 IWL_ERROR("Could not read microcode: %d\n", ret
);
6318 mutex_unlock(&priv
->mutex
);
6319 goto out_release_irq
;
6323 ret
= __iwl4965_up(priv
);
6325 mutex_unlock(&priv
->mutex
);
6328 goto out_release_irq
;
6330 IWL_DEBUG_INFO("Start UP work done.\n");
6332 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
6335 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6336 * mac80211 will not be run successfully. */
6337 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
6338 test_bit(STATUS_READY
, &priv
->status
),
6339 UCODE_READY_TIMEOUT
);
6341 if (!test_bit(STATUS_READY
, &priv
->status
)) {
6342 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6343 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
6345 goto out_release_irq
;
6350 IWL_DEBUG_MAC80211("leave\n");
6354 free_irq(priv
->pci_dev
->irq
, priv
);
6356 pci_disable_msi(priv
->pci_dev
);
6357 pci_disable_device(priv
->pci_dev
);
6359 IWL_DEBUG_MAC80211("leave - failed\n");
6363 static void iwl4965_mac_stop(struct ieee80211_hw
*hw
)
6365 struct iwl_priv
*priv
= hw
->priv
;
6367 IWL_DEBUG_MAC80211("enter\n");
6369 if (!priv
->is_open
) {
6370 IWL_DEBUG_MAC80211("leave - skip\n");
6376 if (iwl_is_ready_rf(priv
)) {
6377 /* stop mac, cancel any scan request and clear
6378 * RXON_FILTER_ASSOC_MSK BIT
6380 mutex_lock(&priv
->mutex
);
6381 iwl4965_scan_cancel_timeout(priv
, 100);
6382 cancel_delayed_work(&priv
->post_associate
);
6383 mutex_unlock(&priv
->mutex
);
6388 flush_workqueue(priv
->workqueue
);
6389 free_irq(priv
->pci_dev
->irq
, priv
);
6390 pci_disable_msi(priv
->pci_dev
);
6391 pci_save_state(priv
->pci_dev
);
6392 pci_disable_device(priv
->pci_dev
);
6394 IWL_DEBUG_MAC80211("leave\n");
6397 static int iwl4965_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
6398 struct ieee80211_tx_control
*ctl
)
6400 struct iwl_priv
*priv
= hw
->priv
;
6402 IWL_DEBUG_MAC80211("enter\n");
6404 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
6405 IWL_DEBUG_MAC80211("leave - monitor\n");
6409 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
6410 ctl
->tx_rate
->bitrate
);
6412 if (iwl4965_tx_skb(priv
, skb
, ctl
))
6413 dev_kfree_skb_any(skb
);
6415 IWL_DEBUG_MAC80211("leave\n");
6419 static int iwl4965_mac_add_interface(struct ieee80211_hw
*hw
,
6420 struct ieee80211_if_init_conf
*conf
)
6422 struct iwl_priv
*priv
= hw
->priv
;
6423 unsigned long flags
;
6424 DECLARE_MAC_BUF(mac
);
6426 IWL_DEBUG_MAC80211("enter: type %d\n", conf
->type
);
6429 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6433 spin_lock_irqsave(&priv
->lock
, flags
);
6434 priv
->vif
= conf
->vif
;
6436 spin_unlock_irqrestore(&priv
->lock
, flags
);
6438 mutex_lock(&priv
->mutex
);
6440 if (conf
->mac_addr
) {
6441 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac
, conf
->mac_addr
));
6442 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
6445 if (iwl_is_ready(priv
))
6446 iwl4965_set_mode(priv
, conf
->type
);
6448 mutex_unlock(&priv
->mutex
);
6450 IWL_DEBUG_MAC80211("leave\n");
6455 * iwl4965_mac_config - mac80211 config callback
6457 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6458 * be set inappropriately and the driver currently sets the hardware up to
6459 * use it whenever needed.
6461 static int iwl4965_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
6463 struct iwl_priv
*priv
= hw
->priv
;
6464 const struct iwl_channel_info
*ch_info
;
6465 unsigned long flags
;
6468 mutex_lock(&priv
->mutex
);
6469 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
->hw_value
);
6471 priv
->add_radiotap
= !!(conf
->flags
& IEEE80211_CONF_RADIOTAP
);
6473 if (!iwl_is_ready(priv
)) {
6474 IWL_DEBUG_MAC80211("leave - not ready\n");
6479 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
6480 test_bit(STATUS_SCANNING
, &priv
->status
))) {
6481 IWL_DEBUG_MAC80211("leave - scanning\n");
6482 set_bit(STATUS_CONF_PENDING
, &priv
->status
);
6483 mutex_unlock(&priv
->mutex
);
6487 spin_lock_irqsave(&priv
->lock
, flags
);
6489 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
,
6490 ieee80211_frequency_to_channel(conf
->channel
->center_freq
));
6491 if (!is_channel_valid(ch_info
)) {
6492 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6493 spin_unlock_irqrestore(&priv
->lock
, flags
);
6498 #ifdef CONFIG_IWL4965_HT
6499 /* if we are switching from ht to 2.4 clear flags
6500 * from any ht related info since 2.4 does not
6502 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
->hw_value
)
6503 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6504 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
6507 priv
->staging_rxon
.flags
= 0;
6508 #endif /* CONFIG_IWL4965_HT */
6510 iwlcore_set_rxon_channel(priv
, conf
->channel
->band
,
6511 ieee80211_frequency_to_channel(conf
->channel
->center_freq
));
6513 iwl4965_set_flags_for_phymode(priv
, conf
->channel
->band
);
6515 /* The list of supported rates and rate mask can be different
6516 * for each band; since the band may have changed, reset
6517 * the rate mask to what mac80211 lists */
6518 iwl4965_set_rate(priv
);
6520 spin_unlock_irqrestore(&priv
->lock
, flags
);
6522 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6523 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
6524 iwl4965_hw_channel_switch(priv
, conf
->channel
);
6529 if (priv
->cfg
->ops
->lib
->radio_kill_sw
)
6530 priv
->cfg
->ops
->lib
->radio_kill_sw(priv
, !conf
->radio_enabled
);
6532 if (!conf
->radio_enabled
) {
6533 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6537 if (iwl_is_rfkill(priv
)) {
6538 IWL_DEBUG_MAC80211("leave - RF kill\n");
6543 iwl4965_set_rate(priv
);
6545 if (memcmp(&priv
->active_rxon
,
6546 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
6547 iwl4965_commit_rxon(priv
);
6549 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6551 IWL_DEBUG_MAC80211("leave\n");
6554 clear_bit(STATUS_CONF_PENDING
, &priv
->status
);
6555 mutex_unlock(&priv
->mutex
);
6559 static void iwl4965_config_ap(struct iwl_priv
*priv
)
6563 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6566 /* The following should be done only at AP bring up */
6567 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
6569 /* RXON - unassoc (to set timing command) */
6570 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6571 iwl4965_commit_rxon(priv
);
6574 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl4965_rxon_time_cmd
));
6575 iwl4965_setup_rxon_timing(priv
);
6576 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
6577 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
6579 IWL_WARNING("REPLY_RXON_TIMING failed - "
6580 "Attempting to continue.\n");
6582 iwl4965_set_rxon_chain(priv
);
6584 /* FIXME: what should be the assoc_id for AP? */
6585 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
6586 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
6587 priv
->staging_rxon
.flags
|=
6588 RXON_FLG_SHORT_PREAMBLE_MSK
;
6590 priv
->staging_rxon
.flags
&=
6591 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6593 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
6594 if (priv
->assoc_capability
&
6595 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
6596 priv
->staging_rxon
.flags
|=
6597 RXON_FLG_SHORT_SLOT_MSK
;
6599 priv
->staging_rxon
.flags
&=
6600 ~RXON_FLG_SHORT_SLOT_MSK
;
6602 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
6603 priv
->staging_rxon
.flags
&=
6604 ~RXON_FLG_SHORT_SLOT_MSK
;
6606 /* restore RXON assoc */
6607 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
6608 iwl4965_commit_rxon(priv
);
6609 iwl4965_activate_qos(priv
, 1);
6610 iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0);
6612 iwl4965_send_beacon_cmd(priv
);
6614 /* FIXME - we need to add code here to detect a totally new
6615 * configuration, reset the AP, unassoc, rxon timing, assoc,
6616 * clear sta table, add BCAST sta... */
6619 static int iwl4965_mac_config_interface(struct ieee80211_hw
*hw
,
6620 struct ieee80211_vif
*vif
,
6621 struct ieee80211_if_conf
*conf
)
6623 struct iwl_priv
*priv
= hw
->priv
;
6624 DECLARE_MAC_BUF(mac
);
6625 unsigned long flags
;
6631 if (priv
->vif
!= vif
) {
6632 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6633 mutex_unlock(&priv
->mutex
);
6637 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
6638 (!conf
->beacon
|| !conf
->ssid_len
)) {
6640 ("Leaving in AP mode because HostAPD is not ready.\n");
6644 if (!iwl_is_alive(priv
))
6647 mutex_lock(&priv
->mutex
);
6650 IWL_DEBUG_MAC80211("bssid: %s\n",
6651 print_mac(mac
, conf
->bssid
));
6654 * very dubious code was here; the probe filtering flag is never set:
6656 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6657 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6660 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
6662 conf
->bssid
= priv
->mac_addr
;
6663 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
6664 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6665 print_mac(mac
, conf
->bssid
));
6667 if (priv
->ibss_beacon
)
6668 dev_kfree_skb(priv
->ibss_beacon
);
6670 priv
->ibss_beacon
= conf
->beacon
;
6673 if (iwl_is_rfkill(priv
))
6676 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
6677 !is_multicast_ether_addr(conf
->bssid
)) {
6678 /* If there is currently a HW scan going on in the background
6679 * then we need to cancel it else the RXON below will fail. */
6680 if (iwl4965_scan_cancel_timeout(priv
, 100)) {
6681 IWL_WARNING("Aborted scan still in progress "
6683 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6684 mutex_unlock(&priv
->mutex
);
6687 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
6689 /* TODO: Audit driver for usage of these members and see
6690 * if mac80211 deprecates them (priv->bssid looks like it
6691 * shouldn't be there, but I haven't scanned the IBSS code
6692 * to verify) - jpk */
6693 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
6695 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
6696 iwl4965_config_ap(priv
);
6698 rc
= iwl4965_commit_rxon(priv
);
6699 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
6700 iwl4965_rxon_add_station(
6701 priv
, priv
->active_rxon
.bssid_addr
, 1);
6705 iwl4965_scan_cancel_timeout(priv
, 100);
6706 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6707 iwl4965_commit_rxon(priv
);
6711 spin_lock_irqsave(&priv
->lock
, flags
);
6712 if (!conf
->ssid_len
)
6713 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
6715 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
6717 priv
->essid_len
= conf
->ssid_len
;
6718 spin_unlock_irqrestore(&priv
->lock
, flags
);
6720 IWL_DEBUG_MAC80211("leave\n");
6721 mutex_unlock(&priv
->mutex
);
6726 static void iwl4965_configure_filter(struct ieee80211_hw
*hw
,
6727 unsigned int changed_flags
,
6728 unsigned int *total_flags
,
6729 int mc_count
, struct dev_addr_list
*mc_list
)
6733 * see also iwl4965_connection_init_rx_config
6738 static void iwl4965_mac_remove_interface(struct ieee80211_hw
*hw
,
6739 struct ieee80211_if_init_conf
*conf
)
6741 struct iwl_priv
*priv
= hw
->priv
;
6743 IWL_DEBUG_MAC80211("enter\n");
6745 mutex_lock(&priv
->mutex
);
6747 if (iwl_is_ready_rf(priv
)) {
6748 iwl4965_scan_cancel_timeout(priv
, 100);
6749 cancel_delayed_work(&priv
->post_associate
);
6750 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6751 iwl4965_commit_rxon(priv
);
6753 if (priv
->vif
== conf
->vif
) {
6755 memset(priv
->bssid
, 0, ETH_ALEN
);
6756 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
6757 priv
->essid_len
= 0;
6759 mutex_unlock(&priv
->mutex
);
6761 IWL_DEBUG_MAC80211("leave\n");
6766 #ifdef CONFIG_IWL4965_HT
6767 static void iwl4965_ht_conf(struct iwl_priv
*priv
,
6768 struct ieee80211_bss_conf
*bss_conf
)
6770 struct ieee80211_ht_info
*ht_conf
= bss_conf
->ht_conf
;
6771 struct ieee80211_ht_bss_info
*ht_bss_conf
= bss_conf
->ht_bss_conf
;
6772 struct iwl_ht_info
*iwl_conf
= &priv
->current_ht_config
;
6774 IWL_DEBUG_MAC80211("enter: \n");
6776 iwl_conf
->is_ht
= bss_conf
->assoc_ht
;
6778 if (!iwl_conf
->is_ht
)
6781 priv
->ps_mode
= (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_MIMO_PS
) >> 2);
6783 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_20
)
6784 iwl_conf
->sgf
|= 0x1;
6785 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_40
)
6786 iwl_conf
->sgf
|= 0x2;
6788 iwl_conf
->is_green_field
= !!(ht_conf
->cap
& IEEE80211_HT_CAP_GRN_FLD
);
6789 iwl_conf
->max_amsdu_size
=
6790 !!(ht_conf
->cap
& IEEE80211_HT_CAP_MAX_AMSDU
);
6792 iwl_conf
->supported_chan_width
=
6793 !!(ht_conf
->cap
& IEEE80211_HT_CAP_SUP_WIDTH
);
6794 iwl_conf
->extension_chan_offset
=
6795 ht_bss_conf
->bss_cap
& IEEE80211_HT_IE_CHA_SEC_OFFSET
;
6796 /* If no above or below channel supplied disable FAT channel */
6797 if (iwl_conf
->extension_chan_offset
!= IWL_EXT_CHANNEL_OFFSET_ABOVE
&&
6798 iwl_conf
->extension_chan_offset
!= IWL_EXT_CHANNEL_OFFSET_BELOW
)
6799 iwl_conf
->supported_chan_width
= 0;
6801 iwl_conf
->tx_mimo_ps_mode
=
6802 (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_MIMO_PS
) >> 2);
6803 memcpy(iwl_conf
->supp_mcs_set
, ht_conf
->supp_mcs_set
, 16);
6805 iwl_conf
->control_channel
= ht_bss_conf
->primary_channel
;
6806 iwl_conf
->tx_chan_width
=
6807 !!(ht_bss_conf
->bss_cap
& IEEE80211_HT_IE_CHA_WIDTH
);
6808 iwl_conf
->ht_protection
=
6809 ht_bss_conf
->bss_op_mode
& IEEE80211_HT_IE_HT_PROTECTION
;
6810 iwl_conf
->non_GF_STA_present
=
6811 !!(ht_bss_conf
->bss_op_mode
& IEEE80211_HT_IE_NON_GF_STA_PRSNT
);
6813 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf
->control_channel
);
6814 IWL_DEBUG_MAC80211("leave\n");
6817 static inline void iwl4965_ht_conf(struct iwl_priv
*priv
,
6818 struct ieee80211_bss_conf
*bss_conf
)
6823 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6824 static void iwl4965_bss_info_changed(struct ieee80211_hw
*hw
,
6825 struct ieee80211_vif
*vif
,
6826 struct ieee80211_bss_conf
*bss_conf
,
6829 struct iwl_priv
*priv
= hw
->priv
;
6831 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes
);
6833 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
6834 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6835 bss_conf
->use_short_preamble
);
6836 if (bss_conf
->use_short_preamble
)
6837 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
6839 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6842 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
6843 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf
->use_cts_prot
);
6844 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
6845 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
6847 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
6850 if (changes
& BSS_CHANGED_HT
) {
6851 IWL_DEBUG_MAC80211("HT %d\n", bss_conf
->assoc_ht
);
6852 iwl4965_ht_conf(priv
, bss_conf
);
6853 iwl4965_set_rxon_chain(priv
);
6856 if (changes
& BSS_CHANGED_ASSOC
) {
6857 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf
->assoc
);
6858 if (bss_conf
->assoc
) {
6859 priv
->assoc_id
= bss_conf
->aid
;
6860 priv
->beacon_int
= bss_conf
->beacon_int
;
6861 priv
->timestamp
= bss_conf
->timestamp
;
6862 priv
->assoc_capability
= bss_conf
->assoc_capability
;
6863 priv
->next_scan_jiffies
= jiffies
+
6864 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
6865 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
6868 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf
->assoc
);
6870 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
6871 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes
);
6872 iwl4965_send_rxon_assoc(priv
);
6877 static int iwl4965_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
6880 unsigned long flags
;
6881 struct iwl_priv
*priv
= hw
->priv
;
6883 IWL_DEBUG_MAC80211("enter\n");
6885 mutex_lock(&priv
->mutex
);
6886 spin_lock_irqsave(&priv
->lock
, flags
);
6888 if (!iwl_is_ready_rf(priv
)) {
6890 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6894 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
6896 IWL_ERROR("ERROR: APs don't scan\n");
6900 /* we don't schedule scan within next_scan_jiffies period */
6901 if (priv
->next_scan_jiffies
&&
6902 time_after(priv
->next_scan_jiffies
, jiffies
)) {
6906 /* if we just finished scan ask for delay */
6907 if (priv
->last_scan_jiffies
&& time_after(priv
->last_scan_jiffies
+
6908 IWL_DELAY_NEXT_SCAN
, jiffies
)) {
6913 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6914 iwl4965_escape_essid(ssid
, len
), (int)len
);
6916 priv
->one_direct_scan
= 1;
6917 priv
->direct_ssid_len
= (u8
)
6918 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
6919 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
6921 priv
->one_direct_scan
= 0;
6923 rc
= iwl4965_scan_initiate(priv
);
6925 IWL_DEBUG_MAC80211("leave\n");
6928 spin_unlock_irqrestore(&priv
->lock
, flags
);
6929 mutex_unlock(&priv
->mutex
);
6934 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw
*hw
,
6935 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
6936 u32 iv32
, u16
*phase1key
)
6938 struct iwl_priv
*priv
= hw
->priv
;
6939 u8 sta_id
= IWL_INVALID_STATION
;
6940 unsigned long flags
;
6941 __le16 key_flags
= 0;
6943 DECLARE_MAC_BUF(mac
);
6945 IWL_DEBUG_MAC80211("enter\n");
6947 sta_id
= iwl4965_hw_find_station(priv
, addr
);
6948 if (sta_id
== IWL_INVALID_STATION
) {
6949 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6950 print_mac(mac
, addr
));
6954 iwl4965_scan_cancel_timeout(priv
, 100);
6956 key_flags
|= (STA_KEY_FLG_TKIP
| STA_KEY_FLG_MAP_KEY_MSK
);
6957 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
6958 key_flags
&= ~STA_KEY_FLG_INVALID
;
6960 if (sta_id
== priv
->hw_setting
.bcast_sta_id
)
6961 key_flags
|= STA_KEY_MULTICAST_MSK
;
6963 spin_lock_irqsave(&priv
->sta_lock
, flags
);
6965 priv
->stations
[sta_id
].sta
.key
.key_offset
=
6966 (sta_id
% STA_KEY_MAX_NUM
);/* FIXME */
6967 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
6968 priv
->stations
[sta_id
].sta
.key
.tkip_rx_tsc_byte2
= (u8
) iv32
;
6970 for (i
= 0; i
< 5; i
++)
6971 priv
->stations
[sta_id
].sta
.key
.tkip_rx_ttak
[i
] =
6972 cpu_to_le16(phase1key
[i
]);
6974 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
6975 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
6977 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
6979 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
6981 IWL_DEBUG_MAC80211("leave\n");
6984 static int iwl4965_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
6985 const u8
*local_addr
, const u8
*addr
,
6986 struct ieee80211_key_conf
*key
)
6988 struct iwl_priv
*priv
= hw
->priv
;
6989 DECLARE_MAC_BUF(mac
);
6991 u8 sta_id
= IWL_INVALID_STATION
;
6994 IWL_DEBUG_MAC80211("enter\n");
6996 if (!priv
->cfg
->mod_params
->hw_crypto
) {
6997 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7001 if (is_zero_ether_addr(addr
))
7002 /* only support pairwise keys */
7005 /* FIXME: need to differenciate between static and dynamic key
7006 * in the level of mac80211 */
7007 static_key
= !iwl_is_associated(priv
);
7010 sta_id
= iwl4965_hw_find_station(priv
, addr
);
7011 if (sta_id
== IWL_INVALID_STATION
) {
7012 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7013 print_mac(mac
, addr
));
7018 iwl4965_scan_cancel_timeout(priv
, 100);
7023 ret
= iwl4965_set_static_key(priv
, key
);
7025 ret
= iwl4965_set_dynamic_key(priv
, key
, sta_id
);
7027 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7031 ret
= iwl4965_remove_static_key(priv
);
7033 ret
= iwl4965_clear_sta_key_info(priv
, sta_id
);
7035 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7041 IWL_DEBUG_MAC80211("leave\n");
7046 static int iwl4965_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
7047 const struct ieee80211_tx_queue_params
*params
)
7049 struct iwl_priv
*priv
= hw
->priv
;
7050 unsigned long flags
;
7053 IWL_DEBUG_MAC80211("enter\n");
7055 if (!iwl_is_ready_rf(priv
)) {
7056 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7060 if (queue
>= AC_NUM
) {
7061 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
7065 if (!priv
->qos_data
.qos_enable
) {
7066 priv
->qos_data
.qos_active
= 0;
7067 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7070 q
= AC_NUM
- 1 - queue
;
7072 spin_lock_irqsave(&priv
->lock
, flags
);
7074 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
7075 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
7076 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
7077 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
7078 cpu_to_le16((params
->txop
* 32));
7080 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
7081 priv
->qos_data
.qos_active
= 1;
7083 spin_unlock_irqrestore(&priv
->lock
, flags
);
7085 mutex_lock(&priv
->mutex
);
7086 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
7087 iwl4965_activate_qos(priv
, 1);
7088 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
7089 iwl4965_activate_qos(priv
, 0);
7091 mutex_unlock(&priv
->mutex
);
7093 IWL_DEBUG_MAC80211("leave\n");
7097 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw
*hw
,
7098 struct ieee80211_tx_queue_stats
*stats
)
7100 struct iwl_priv
*priv
= hw
->priv
;
7102 struct iwl4965_tx_queue
*txq
;
7103 struct iwl4965_queue
*q
;
7104 unsigned long flags
;
7106 IWL_DEBUG_MAC80211("enter\n");
7108 if (!iwl_is_ready_rf(priv
)) {
7109 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7113 spin_lock_irqsave(&priv
->lock
, flags
);
7115 for (i
= 0; i
< AC_NUM
; i
++) {
7116 txq
= &priv
->txq
[i
];
7118 avail
= iwl4965_queue_space(q
);
7120 stats
->data
[i
].len
= q
->n_window
- avail
;
7121 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
7122 stats
->data
[i
].count
= q
->n_window
;
7125 spin_unlock_irqrestore(&priv
->lock
, flags
);
7127 IWL_DEBUG_MAC80211("leave\n");
7132 static int iwl4965_mac_get_stats(struct ieee80211_hw
*hw
,
7133 struct ieee80211_low_level_stats
*stats
)
7135 IWL_DEBUG_MAC80211("enter\n");
7136 IWL_DEBUG_MAC80211("leave\n");
7141 static u64
iwl4965_mac_get_tsf(struct ieee80211_hw
*hw
)
7143 IWL_DEBUG_MAC80211("enter\n");
7144 IWL_DEBUG_MAC80211("leave\n");
7149 static void iwl4965_mac_reset_tsf(struct ieee80211_hw
*hw
)
7151 struct iwl_priv
*priv
= hw
->priv
;
7152 unsigned long flags
;
7154 mutex_lock(&priv
->mutex
);
7155 IWL_DEBUG_MAC80211("enter\n");
7157 priv
->lq_mngr
.lq_ready
= 0;
7158 #ifdef CONFIG_IWL4965_HT
7159 spin_lock_irqsave(&priv
->lock
, flags
);
7160 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
7161 spin_unlock_irqrestore(&priv
->lock
, flags
);
7162 #endif /* CONFIG_IWL4965_HT */
7164 iwlcore_reset_qos(priv
);
7166 cancel_delayed_work(&priv
->post_associate
);
7168 spin_lock_irqsave(&priv
->lock
, flags
);
7170 priv
->assoc_capability
= 0;
7171 priv
->assoc_station_added
= 0;
7173 /* new association get rid of ibss beacon skb */
7174 if (priv
->ibss_beacon
)
7175 dev_kfree_skb(priv
->ibss_beacon
);
7177 priv
->ibss_beacon
= NULL
;
7179 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
7180 priv
->timestamp
= 0;
7181 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
7182 priv
->beacon_int
= 0;
7184 spin_unlock_irqrestore(&priv
->lock
, flags
);
7186 if (!iwl_is_ready_rf(priv
)) {
7187 IWL_DEBUG_MAC80211("leave - not ready\n");
7188 mutex_unlock(&priv
->mutex
);
7192 /* we are restarting association process
7193 * clear RXON_FILTER_ASSOC_MSK bit
7195 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
7196 iwl4965_scan_cancel_timeout(priv
, 100);
7197 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
7198 iwl4965_commit_rxon(priv
);
7201 /* Per mac80211.h: This is only used in IBSS mode... */
7202 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7204 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7205 mutex_unlock(&priv
->mutex
);
7209 priv
->only_active_channel
= 0;
7211 iwl4965_set_rate(priv
);
7213 mutex_unlock(&priv
->mutex
);
7215 IWL_DEBUG_MAC80211("leave\n");
7218 static int iwl4965_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
7219 struct ieee80211_tx_control
*control
)
7221 struct iwl_priv
*priv
= hw
->priv
;
7222 unsigned long flags
;
7224 mutex_lock(&priv
->mutex
);
7225 IWL_DEBUG_MAC80211("enter\n");
7227 if (!iwl_is_ready_rf(priv
)) {
7228 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7229 mutex_unlock(&priv
->mutex
);
7233 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
7234 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7235 mutex_unlock(&priv
->mutex
);
7239 spin_lock_irqsave(&priv
->lock
, flags
);
7241 if (priv
->ibss_beacon
)
7242 dev_kfree_skb(priv
->ibss_beacon
);
7244 priv
->ibss_beacon
= skb
;
7248 IWL_DEBUG_MAC80211("leave\n");
7249 spin_unlock_irqrestore(&priv
->lock
, flags
);
7251 iwlcore_reset_qos(priv
);
7253 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
7255 mutex_unlock(&priv
->mutex
);
7260 /*****************************************************************************
7264 *****************************************************************************/
7266 #ifdef CONFIG_IWLWIFI_DEBUG
7269 * The following adds a new attribute to the sysfs representation
7270 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7271 * used for controlling the debug level.
7273 * See the level definitions in iwl for details.
7276 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
7278 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
7280 static ssize_t
store_debug_level(struct device_driver
*d
,
7281 const char *buf
, size_t count
)
7283 char *p
= (char *)buf
;
7286 val
= simple_strtoul(p
, &p
, 0);
7288 printk(KERN_INFO DRV_NAME
7289 ": %s is not in hex or decimal form.\n", buf
);
7291 iwl_debug_level
= val
;
7293 return strnlen(buf
, count
);
7296 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
7297 show_debug_level
, store_debug_level
);
7299 #endif /* CONFIG_IWLWIFI_DEBUG */
7302 static ssize_t
show_temperature(struct device
*d
,
7303 struct device_attribute
*attr
, char *buf
)
7305 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7307 if (!iwl_is_alive(priv
))
7310 return sprintf(buf
, "%d\n", iwl4965_hw_get_temperature(priv
));
7313 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
7315 static ssize_t
show_rs_window(struct device
*d
,
7316 struct device_attribute
*attr
,
7319 struct iwl_priv
*priv
= d
->driver_data
;
7320 return iwl4965_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
7322 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
7324 static ssize_t
show_tx_power(struct device
*d
,
7325 struct device_attribute
*attr
, char *buf
)
7327 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7328 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
7331 static ssize_t
store_tx_power(struct device
*d
,
7332 struct device_attribute
*attr
,
7333 const char *buf
, size_t count
)
7335 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7336 char *p
= (char *)buf
;
7339 val
= simple_strtoul(p
, &p
, 10);
7341 printk(KERN_INFO DRV_NAME
7342 ": %s is not in decimal form.\n", buf
);
7344 iwl4965_hw_reg_set_txpower(priv
, val
);
7349 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
7351 static ssize_t
show_flags(struct device
*d
,
7352 struct device_attribute
*attr
, char *buf
)
7354 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7356 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
7359 static ssize_t
store_flags(struct device
*d
,
7360 struct device_attribute
*attr
,
7361 const char *buf
, size_t count
)
7363 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7364 u32 flags
= simple_strtoul(buf
, NULL
, 0);
7366 mutex_lock(&priv
->mutex
);
7367 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
7368 /* Cancel any currently running scans... */
7369 if (iwl4965_scan_cancel_timeout(priv
, 100))
7370 IWL_WARNING("Could not cancel scan.\n");
7372 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7374 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
7375 iwl4965_commit_rxon(priv
);
7378 mutex_unlock(&priv
->mutex
);
7383 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
7385 static ssize_t
show_filter_flags(struct device
*d
,
7386 struct device_attribute
*attr
, char *buf
)
7388 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7390 return sprintf(buf
, "0x%04X\n",
7391 le32_to_cpu(priv
->active_rxon
.filter_flags
));
7394 static ssize_t
store_filter_flags(struct device
*d
,
7395 struct device_attribute
*attr
,
7396 const char *buf
, size_t count
)
7398 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7399 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
7401 mutex_lock(&priv
->mutex
);
7402 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
7403 /* Cancel any currently running scans... */
7404 if (iwl4965_scan_cancel_timeout(priv
, 100))
7405 IWL_WARNING("Could not cancel scan.\n");
7407 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7408 "0x%04X\n", filter_flags
);
7409 priv
->staging_rxon
.filter_flags
=
7410 cpu_to_le32(filter_flags
);
7411 iwl4965_commit_rxon(priv
);
7414 mutex_unlock(&priv
->mutex
);
7419 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
7420 store_filter_flags
);
7422 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7424 static ssize_t
show_measurement(struct device
*d
,
7425 struct device_attribute
*attr
, char *buf
)
7427 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7428 struct iwl4965_spectrum_notification measure_report
;
7429 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
7430 u8
*data
= (u8
*) & measure_report
;
7431 unsigned long flags
;
7433 spin_lock_irqsave(&priv
->lock
, flags
);
7434 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
7435 spin_unlock_irqrestore(&priv
->lock
, flags
);
7438 memcpy(&measure_report
, &priv
->measure_report
, size
);
7439 priv
->measurement_status
= 0;
7440 spin_unlock_irqrestore(&priv
->lock
, flags
);
7442 while (size
&& (PAGE_SIZE
- len
)) {
7443 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
7444 PAGE_SIZE
- len
, 1);
7446 if (PAGE_SIZE
- len
)
7450 size
-= min(size
, 16U);
7456 static ssize_t
store_measurement(struct device
*d
,
7457 struct device_attribute
*attr
,
7458 const char *buf
, size_t count
)
7460 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7461 struct ieee80211_measurement_params params
= {
7462 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
7463 .start_time
= cpu_to_le64(priv
->last_tsf
),
7464 .duration
= cpu_to_le16(1),
7466 u8 type
= IWL_MEASURE_BASIC
;
7472 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
7473 channel
= simple_strtoul(p
, NULL
, 0);
7475 params
.channel
= channel
;
7478 while (*p
&& *p
!= ' ')
7481 type
= simple_strtoul(p
+ 1, NULL
, 0);
7484 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7485 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
7486 iwl4965_get_measurement(priv
, ¶ms
, type
);
7491 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
7492 show_measurement
, store_measurement
);
7493 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7495 static ssize_t
store_retry_rate(struct device
*d
,
7496 struct device_attribute
*attr
,
7497 const char *buf
, size_t count
)
7499 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7501 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
7502 if (priv
->retry_rate
<= 0)
7503 priv
->retry_rate
= 1;
7508 static ssize_t
show_retry_rate(struct device
*d
,
7509 struct device_attribute
*attr
, char *buf
)
7511 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7512 return sprintf(buf
, "%d", priv
->retry_rate
);
7515 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
7518 static ssize_t
store_power_level(struct device
*d
,
7519 struct device_attribute
*attr
,
7520 const char *buf
, size_t count
)
7522 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7526 mode
= simple_strtoul(buf
, NULL
, 0);
7527 mutex_lock(&priv
->mutex
);
7529 if (!iwl_is_ready(priv
)) {
7534 if ((mode
< 1) || (mode
> IWL_POWER_LIMIT
) || (mode
== IWL_POWER_AC
))
7535 mode
= IWL_POWER_AC
;
7537 mode
|= IWL_POWER_ENABLED
;
7539 if (mode
!= priv
->power_mode
) {
7540 rc
= iwl4965_send_power_mode(priv
, IWL_POWER_LEVEL(mode
));
7542 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7545 priv
->power_mode
= mode
;
7551 mutex_unlock(&priv
->mutex
);
7555 #define MAX_WX_STRING 80
7557 /* Values are in microsecond */
7558 static const s32 timeout_duration
[] = {
7565 static const s32 period_duration
[] = {
7573 static ssize_t
show_power_level(struct device
*d
,
7574 struct device_attribute
*attr
, char *buf
)
7576 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7577 int level
= IWL_POWER_LEVEL(priv
->power_mode
);
7580 p
+= sprintf(p
, "%d ", level
);
7582 case IWL_POWER_MODE_CAM
:
7584 p
+= sprintf(p
, "(AC)");
7586 case IWL_POWER_BATTERY
:
7587 p
+= sprintf(p
, "(BATTERY)");
7591 "(Timeout %dms, Period %dms)",
7592 timeout_duration
[level
- 1] / 1000,
7593 period_duration
[level
- 1] / 1000);
7596 if (!(priv
->power_mode
& IWL_POWER_ENABLED
))
7597 p
+= sprintf(p
, " OFF\n");
7599 p
+= sprintf(p
, " \n");
7601 return (p
- buf
+ 1);
7605 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
7608 static ssize_t
show_channels(struct device
*d
,
7609 struct device_attribute
*attr
, char *buf
)
7611 /* all this shit doesn't belong into sysfs anyway */
7615 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
7617 static ssize_t
show_statistics(struct device
*d
,
7618 struct device_attribute
*attr
, char *buf
)
7620 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7621 u32 size
= sizeof(struct iwl4965_notif_statistics
);
7622 u32 len
= 0, ofs
= 0;
7623 u8
*data
= (u8
*) & priv
->statistics
;
7626 if (!iwl_is_alive(priv
))
7629 mutex_lock(&priv
->mutex
);
7630 rc
= iwl4965_send_statistics_request(priv
);
7631 mutex_unlock(&priv
->mutex
);
7635 "Error sending statistics request: 0x%08X\n", rc
);
7639 while (size
&& (PAGE_SIZE
- len
)) {
7640 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
7641 PAGE_SIZE
- len
, 1);
7643 if (PAGE_SIZE
- len
)
7647 size
-= min(size
, 16U);
7653 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
7655 static ssize_t
show_antenna(struct device
*d
,
7656 struct device_attribute
*attr
, char *buf
)
7658 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7660 if (!iwl_is_alive(priv
))
7663 return sprintf(buf
, "%d\n", priv
->antenna
);
7666 static ssize_t
store_antenna(struct device
*d
,
7667 struct device_attribute
*attr
,
7668 const char *buf
, size_t count
)
7671 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7676 if (sscanf(buf
, "%1i", &ant
) != 1) {
7677 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7681 if ((ant
>= 0) && (ant
<= 2)) {
7682 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant
);
7683 priv
->antenna
= (enum iwl4965_antenna
)ant
;
7685 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant
);
7691 static DEVICE_ATTR(antenna
, S_IWUSR
| S_IRUGO
, show_antenna
, store_antenna
);
7693 static ssize_t
show_status(struct device
*d
,
7694 struct device_attribute
*attr
, char *buf
)
7696 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7697 if (!iwl_is_alive(priv
))
7699 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
7702 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
7704 static ssize_t
dump_error_log(struct device
*d
,
7705 struct device_attribute
*attr
,
7706 const char *buf
, size_t count
)
7708 char *p
= (char *)buf
;
7711 iwl4965_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
7713 return strnlen(buf
, count
);
7716 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
7718 static ssize_t
dump_event_log(struct device
*d
,
7719 struct device_attribute
*attr
,
7720 const char *buf
, size_t count
)
7722 char *p
= (char *)buf
;
7725 iwl4965_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
7727 return strnlen(buf
, count
);
7730 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
7732 /*****************************************************************************
7734 * driver setup and teardown
7736 *****************************************************************************/
7738 static void iwl4965_setup_deferred_work(struct iwl_priv
*priv
)
7740 priv
->workqueue
= create_workqueue(DRV_NAME
);
7742 init_waitqueue_head(&priv
->wait_command_queue
);
7744 INIT_WORK(&priv
->up
, iwl4965_bg_up
);
7745 INIT_WORK(&priv
->restart
, iwl4965_bg_restart
);
7746 INIT_WORK(&priv
->rx_replenish
, iwl4965_bg_rx_replenish
);
7747 INIT_WORK(&priv
->scan_completed
, iwl4965_bg_scan_completed
);
7748 INIT_WORK(&priv
->request_scan
, iwl4965_bg_request_scan
);
7749 INIT_WORK(&priv
->abort_scan
, iwl4965_bg_abort_scan
);
7750 INIT_WORK(&priv
->rf_kill
, iwl4965_bg_rf_kill
);
7751 INIT_WORK(&priv
->beacon_update
, iwl4965_bg_beacon_update
);
7752 INIT_DELAYED_WORK(&priv
->post_associate
, iwl4965_bg_post_associate
);
7753 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl4965_bg_init_alive_start
);
7754 INIT_DELAYED_WORK(&priv
->alive_start
, iwl4965_bg_alive_start
);
7755 INIT_DELAYED_WORK(&priv
->scan_check
, iwl4965_bg_scan_check
);
7757 iwl4965_hw_setup_deferred_work(priv
);
7759 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
7760 iwl4965_irq_tasklet
, (unsigned long)priv
);
7763 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
)
7765 iwl4965_hw_cancel_deferred_work(priv
);
7767 cancel_delayed_work_sync(&priv
->init_alive_start
);
7768 cancel_delayed_work(&priv
->scan_check
);
7769 cancel_delayed_work(&priv
->alive_start
);
7770 cancel_delayed_work(&priv
->post_associate
);
7771 cancel_work_sync(&priv
->beacon_update
);
7774 static struct attribute
*iwl4965_sysfs_entries
[] = {
7775 &dev_attr_antenna
.attr
,
7776 &dev_attr_channels
.attr
,
7777 &dev_attr_dump_errors
.attr
,
7778 &dev_attr_dump_events
.attr
,
7779 &dev_attr_flags
.attr
,
7780 &dev_attr_filter_flags
.attr
,
7781 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7782 &dev_attr_measurement
.attr
,
7784 &dev_attr_power_level
.attr
,
7785 &dev_attr_retry_rate
.attr
,
7786 &dev_attr_rs_window
.attr
,
7787 &dev_attr_statistics
.attr
,
7788 &dev_attr_status
.attr
,
7789 &dev_attr_temperature
.attr
,
7790 &dev_attr_tx_power
.attr
,
7795 static struct attribute_group iwl4965_attribute_group
= {
7796 .name
= NULL
, /* put in device directory */
7797 .attrs
= iwl4965_sysfs_entries
,
7800 static struct ieee80211_ops iwl4965_hw_ops
= {
7801 .tx
= iwl4965_mac_tx
,
7802 .start
= iwl4965_mac_start
,
7803 .stop
= iwl4965_mac_stop
,
7804 .add_interface
= iwl4965_mac_add_interface
,
7805 .remove_interface
= iwl4965_mac_remove_interface
,
7806 .config
= iwl4965_mac_config
,
7807 .config_interface
= iwl4965_mac_config_interface
,
7808 .configure_filter
= iwl4965_configure_filter
,
7809 .set_key
= iwl4965_mac_set_key
,
7810 .update_tkip_key
= iwl4965_mac_update_tkip_key
,
7811 .get_stats
= iwl4965_mac_get_stats
,
7812 .get_tx_stats
= iwl4965_mac_get_tx_stats
,
7813 .conf_tx
= iwl4965_mac_conf_tx
,
7814 .get_tsf
= iwl4965_mac_get_tsf
,
7815 .reset_tsf
= iwl4965_mac_reset_tsf
,
7816 .beacon_update
= iwl4965_mac_beacon_update
,
7817 .bss_info_changed
= iwl4965_bss_info_changed
,
7818 #ifdef CONFIG_IWL4965_HT
7819 .ampdu_action
= iwl4965_mac_ampdu_action
,
7820 #endif /* CONFIG_IWL4965_HT */
7821 .hw_scan
= iwl4965_mac_hw_scan
7824 static int iwl4965_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
7827 struct iwl_priv
*priv
;
7828 struct ieee80211_hw
*hw
;
7829 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
7830 unsigned long flags
;
7831 DECLARE_MAC_BUF(mac
);
7833 /************************
7834 * 1. Allocating HW data
7835 ************************/
7837 /* Disabling hardware scan means that mac80211 will perform scans
7838 * "the hard way", rather than using device's scan. */
7839 if (cfg
->mod_params
->disable_hw_scan
) {
7840 IWL_DEBUG_INFO("Disabling hw_scan\n");
7841 iwl4965_hw_ops
.hw_scan
= NULL
;
7844 hw
= iwl_alloc_all(cfg
, &iwl4965_hw_ops
);
7850 /* At this point both hw and priv are allocated. */
7852 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
7854 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7856 priv
->pci_dev
= pdev
;
7858 #ifdef CONFIG_IWLWIFI_DEBUG
7859 iwl_debug_level
= priv
->cfg
->mod_params
->debug
;
7860 atomic_set(&priv
->restrict_refcnt
, 0);
7863 /**************************
7864 * 2. Initializing PCI bus
7865 **************************/
7866 if (pci_enable_device(pdev
)) {
7868 goto out_ieee80211_free_hw
;
7871 pci_set_master(pdev
);
7873 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
7875 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
7877 printk(KERN_WARNING DRV_NAME
7878 ": No suitable DMA available.\n");
7879 goto out_pci_disable_device
;
7882 err
= pci_request_regions(pdev
, DRV_NAME
);
7884 goto out_pci_disable_device
;
7886 pci_set_drvdata(pdev
, priv
);
7888 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7889 * PCI Tx retries from interfering with C3 CPU state */
7890 pci_write_config_byte(pdev
, 0x41, 0x00);
7892 /***********************
7893 * 3. Read REV register
7894 ***********************/
7895 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
7896 if (!priv
->hw_base
) {
7898 goto out_pci_release_regions
;
7901 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7902 (unsigned long long) pci_resource_len(pdev
, 0));
7903 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
7905 printk(KERN_INFO DRV_NAME
7906 ": Detected Intel Wireless WiFi Link %s\n", priv
->cfg
->name
);
7912 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
7913 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
7915 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
7916 err
= iwl_poll_bit(priv
, CSR_GP_CNTRL
,
7917 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
7918 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
7920 IWL_DEBUG_INFO("Failed to init the card\n");
7923 /* Read the EEPROM */
7924 err
= iwl_eeprom_init(priv
);
7926 IWL_ERROR("Unable to init EEPROM\n");
7929 /* MAC Address location in EEPROM same for 3945/4965 */
7930 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
7931 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac
, priv
->mac_addr
));
7932 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
7934 /************************
7935 * 5. Setup HW constants
7936 ************************/
7937 /* Device-specific setup */
7938 if (iwl4965_hw_set_hw_setting(priv
)) {
7939 IWL_ERROR("failed to set hw settings\n");
7943 /*******************
7945 *******************/
7947 err
= iwl_setup(priv
);
7949 goto out_unset_hw_settings
;
7950 /* At this point both hw and priv are initialized. */
7952 /**********************************
7953 * 7. Initialize module parameters
7954 **********************************/
7956 /* Disable radio (SW RF KILL) via parameter when loading driver */
7957 if (priv
->cfg
->mod_params
->disable
) {
7958 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
7959 IWL_DEBUG_INFO("Radio disabled.\n");
7962 if (priv
->cfg
->mod_params
->enable_qos
)
7963 priv
->qos_data
.qos_enable
= 1;
7965 /********************
7967 ********************/
7968 spin_lock_irqsave(&priv
->lock
, flags
);
7969 iwl4965_disable_interrupts(priv
);
7970 spin_unlock_irqrestore(&priv
->lock
, flags
);
7972 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
7974 IWL_ERROR("failed to create sysfs device attributes\n");
7975 goto out_unset_hw_settings
;
7978 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
7980 IWL_ERROR("failed to create debugfs files\n");
7981 goto out_remove_sysfs
;
7984 iwl4965_setup_deferred_work(priv
);
7985 iwl4965_setup_rx_handlers(priv
);
7987 /********************
7989 ********************/
7990 pci_save_state(pdev
);
7991 pci_disable_device(pdev
);
7993 /* notify iwlcore to init */
7994 iwlcore_low_level_notify(priv
, IWLCORE_INIT_EVT
);
7998 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
7999 out_unset_hw_settings
:
8000 iwl4965_unset_hw_setting(priv
);
8002 pci_iounmap(pdev
, priv
->hw_base
);
8003 out_pci_release_regions
:
8004 pci_release_regions(pdev
);
8005 pci_set_drvdata(pdev
, NULL
);
8006 out_pci_disable_device
:
8007 pci_disable_device(pdev
);
8008 out_ieee80211_free_hw
:
8009 ieee80211_free_hw(priv
->hw
);
8014 static void __devexit
iwl4965_pci_remove(struct pci_dev
*pdev
)
8016 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8017 struct list_head
*p
, *q
;
8019 unsigned long flags
;
8024 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8026 if (priv
->mac80211_registered
) {
8027 ieee80211_unregister_hw(priv
->hw
);
8028 priv
->mac80211_registered
= 0;
8031 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
8035 /* make sure we flush any pending irq or
8036 * tasklet for the driver
8038 spin_lock_irqsave(&priv
->lock
, flags
);
8039 iwl4965_disable_interrupts(priv
);
8040 spin_unlock_irqrestore(&priv
->lock
, flags
);
8042 iwl_synchronize_irq(priv
);
8044 /* Free MAC hash list for ADHOC */
8045 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
8046 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
8048 kfree(list_entry(p
, struct iwl4965_ibss_seq
, list
));
8052 iwlcore_low_level_notify(priv
, IWLCORE_REMOVE_EVT
);
8053 iwl_dbgfs_unregister(priv
);
8054 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
8056 iwl4965_dealloc_ucode_pci(priv
);
8059 iwl4965_rx_queue_free(priv
, &priv
->rxq
);
8060 iwl4965_hw_txq_ctx_free(priv
);
8062 iwl4965_unset_hw_setting(priv
);
8063 iwlcore_clear_stations_table(priv
);
8066 /*netif_stop_queue(dev); */
8067 flush_workqueue(priv
->workqueue
);
8069 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8070 * priv->workqueue... so we can't take down the workqueue
8072 destroy_workqueue(priv
->workqueue
);
8073 priv
->workqueue
= NULL
;
8075 pci_iounmap(pdev
, priv
->hw_base
);
8076 pci_release_regions(pdev
);
8077 pci_disable_device(pdev
);
8078 pci_set_drvdata(pdev
, NULL
);
8080 iwl_free_channel_map(priv
);
8081 iwl4965_free_geos(priv
);
8083 if (priv
->ibss_beacon
)
8084 dev_kfree_skb(priv
->ibss_beacon
);
8086 ieee80211_free_hw(priv
->hw
);
8091 static int iwl4965_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
8093 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8095 if (priv
->is_open
) {
8096 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
8097 iwl4965_mac_stop(priv
->hw
);
8101 pci_set_power_state(pdev
, PCI_D3hot
);
8106 static int iwl4965_pci_resume(struct pci_dev
*pdev
)
8108 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
8110 pci_set_power_state(pdev
, PCI_D0
);
8113 iwl4965_mac_start(priv
->hw
);
8115 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
8119 #endif /* CONFIG_PM */
8121 /*****************************************************************************
8123 * driver and module entry point
8125 *****************************************************************************/
8127 static struct pci_driver iwl4965_driver
= {
8129 .id_table
= iwl4965_hw_card_ids
,
8130 .probe
= iwl4965_pci_probe
,
8131 .remove
= __devexit_p(iwl4965_pci_remove
),
8133 .suspend
= iwl4965_pci_suspend
,
8134 .resume
= iwl4965_pci_resume
,
8138 static int __init
iwl4965_init(void)
8142 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
8143 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
8145 ret
= iwl4965_rate_control_register();
8147 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret
);
8151 ret
= pci_register_driver(&iwl4965_driver
);
8153 IWL_ERROR("Unable to initialize PCI module\n");
8154 goto error_register
;
8156 #ifdef CONFIG_IWLWIFI_DEBUG
8157 ret
= driver_create_file(&iwl4965_driver
.driver
, &driver_attr_debug_level
);
8159 IWL_ERROR("Unable to create driver sysfs file\n");
8166 #ifdef CONFIG_IWLWIFI_DEBUG
8168 pci_unregister_driver(&iwl4965_driver
);
8171 iwl4965_rate_control_unregister();
8175 static void __exit
iwl4965_exit(void)
8177 #ifdef CONFIG_IWLWIFI_DEBUG
8178 driver_remove_file(&iwl4965_driver
.driver
, &driver_attr_debug_level
);
8180 pci_unregister_driver(&iwl4965_driver
);
8181 iwl4965_rate_control_unregister();
8184 module_exit(iwl4965_exit
);
8185 module_init(iwl4965_init
);