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 #include "iwl-calib.h"
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
57 struct iwl4965_tx_queue
*txq
);
59 /******************************************************************************
63 ******************************************************************************/
66 * module name, copyright, version, etc.
67 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
72 #ifdef CONFIG_IWLWIFI_DEBUG
78 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
84 #define DRV_VERSION IWLWIFI_VERSION VD VS
87 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
88 MODULE_VERSION(DRV_VERSION
);
89 MODULE_AUTHOR(DRV_COPYRIGHT
);
90 MODULE_LICENSE("GPL");
92 __le16
*ieee80211_get_qos_ctrl(struct ieee80211_hdr
*hdr
)
94 u16 fc
= le16_to_cpu(hdr
->frame_control
);
95 int hdr_len
= ieee80211_get_hdrlen(fc
);
97 if ((fc
& 0x00cc) == (IEEE80211_STYPE_QOS_DATA
| IEEE80211_FTYPE_DATA
))
98 return (__le16
*) ((u8
*) hdr
+ hdr_len
- QOS_CONTROL_LEN
);
102 static const struct ieee80211_supported_band
*iwl_get_hw_mode(
103 struct iwl_priv
*priv
, enum ieee80211_band band
)
105 return priv
->hw
->wiphy
->bands
[band
];
108 static int iwl4965_is_empty_essid(const char *essid
, int essid_len
)
110 /* Single white space is for Linksys APs */
111 if (essid_len
== 1 && essid
[0] == ' ')
114 /* Otherwise, if the entire essid is 0, we assume it is hidden */
117 if (essid
[essid_len
] != '\0')
124 static const char *iwl4965_escape_essid(const char *essid
, u8 essid_len
)
126 static char escaped
[IW_ESSID_MAX_SIZE
* 2 + 1];
127 const char *s
= essid
;
130 if (iwl4965_is_empty_essid(essid
, essid_len
)) {
131 memcpy(escaped
, "<hidden>", sizeof("<hidden>"));
135 essid_len
= min(essid_len
, (u8
) IW_ESSID_MAX_SIZE
);
136 while (essid_len
--) {
148 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
151 * Theory of operation
153 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
154 * of buffer descriptors, each of which points to one or more data buffers for
155 * the device to read from or fill. Driver and device exchange status of each
156 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
157 * entries in each circular buffer, to protect against confusing empty and full
160 * The device reads or writes the data in the queues via the device's several
161 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
163 * For Tx queue, there are low mark and high mark limits. If, after queuing
164 * the packet for Tx, free space become < low mark, Tx queue stopped. When
165 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
168 * The 4965 operates with up to 17 queues: One receive queue, one transmit
169 * queue (#4) for sending commands to the device firmware, and 15 other
170 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
172 * See more detailed info in iwl-4965-hw.h.
173 ***************************************************/
175 int iwl4965_queue_space(const struct iwl4965_queue
*q
)
177 int s
= q
->read_ptr
- q
->write_ptr
;
179 if (q
->read_ptr
> q
->write_ptr
)
184 /* keep some reserve to not confuse empty and full situations */
192 static inline int x2_queue_used(const struct iwl4965_queue
*q
, int i
)
194 return q
->write_ptr
> q
->read_ptr
?
195 (i
>= q
->read_ptr
&& i
< q
->write_ptr
) :
196 !(i
< q
->read_ptr
&& i
>= q
->write_ptr
);
199 static inline u8
get_cmd_index(struct iwl4965_queue
*q
, u32 index
, int is_huge
)
201 /* This is for scan command, the big buffer at end of command array */
203 return q
->n_window
; /* must be power of 2 */
205 /* Otherwise, use normal size buffers */
206 return index
& (q
->n_window
- 1);
210 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
212 static int iwl4965_queue_init(struct iwl_priv
*priv
, struct iwl4965_queue
*q
,
213 int count
, int slots_num
, u32 id
)
216 q
->n_window
= slots_num
;
219 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
220 * and iwl_queue_dec_wrap are broken. */
221 BUG_ON(!is_power_of_2(count
));
223 /* slots_num must be power-of-two size, otherwise
224 * get_cmd_index is broken. */
225 BUG_ON(!is_power_of_2(slots_num
));
227 q
->low_mark
= q
->n_window
/ 4;
231 q
->high_mark
= q
->n_window
/ 8;
232 if (q
->high_mark
< 2)
235 q
->write_ptr
= q
->read_ptr
= 0;
241 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
243 static int iwl4965_tx_queue_alloc(struct iwl_priv
*priv
,
244 struct iwl4965_tx_queue
*txq
, u32 id
)
246 struct pci_dev
*dev
= priv
->pci_dev
;
248 /* Driver private data, only for Tx (not command) queues,
249 * not shared with device. */
250 if (id
!= IWL_CMD_QUEUE_NUM
) {
251 txq
->txb
= kmalloc(sizeof(txq
->txb
[0]) *
252 TFD_QUEUE_SIZE_MAX
, GFP_KERNEL
);
254 IWL_ERROR("kmalloc for auxiliary BD "
255 "structures failed\n");
261 /* Circular buffer of transmit frame descriptors (TFDs),
262 * shared with device */
263 txq
->bd
= pci_alloc_consistent(dev
,
264 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
,
268 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
269 sizeof(txq
->bd
[0]) * TFD_QUEUE_SIZE_MAX
);
286 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
288 int iwl4965_tx_queue_init(struct iwl_priv
*priv
,
289 struct iwl4965_tx_queue
*txq
, int slots_num
, u32 txq_id
)
291 struct pci_dev
*dev
= priv
->pci_dev
;
296 * Alloc buffer array for commands (Tx or other types of commands).
297 * For the command queue (#4), allocate command space + one big
298 * command for scan, since scan command is very huge; the system will
299 * not have two scans at the same time, so only one is needed.
300 * For normal Tx queues (all other queues), no super-size command
303 len
= sizeof(struct iwl_cmd
) * slots_num
;
304 if (txq_id
== IWL_CMD_QUEUE_NUM
)
305 len
+= IWL_MAX_SCAN_SIZE
;
306 txq
->cmd
= pci_alloc_consistent(dev
, len
, &txq
->dma_addr_cmd
);
310 /* Alloc driver data array and TFD circular buffer */
311 rc
= iwl4965_tx_queue_alloc(priv
, txq
, txq_id
);
313 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
317 txq
->need_update
= 0;
319 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
320 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
321 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX
& (TFD_QUEUE_SIZE_MAX
- 1));
323 /* Initialize queue's high/low-water marks, and head/tail indexes */
324 iwl4965_queue_init(priv
, &txq
->q
, TFD_QUEUE_SIZE_MAX
, slots_num
, txq_id
);
326 /* Tell device where to find queue */
327 iwl4965_hw_tx_queue_init(priv
, txq
);
333 * iwl4965_tx_queue_free - Deallocate DMA queue.
334 * @txq: Transmit queue to deallocate.
336 * Empty queue by removing and destroying all BD's.
338 * 0-fill, but do not free "txq" descriptor structure.
340 void iwl4965_tx_queue_free(struct iwl_priv
*priv
, struct iwl4965_tx_queue
*txq
)
342 struct iwl4965_queue
*q
= &txq
->q
;
343 struct pci_dev
*dev
= priv
->pci_dev
;
349 /* first, empty all BD's */
350 for (; q
->write_ptr
!= q
->read_ptr
;
351 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
))
352 iwl4965_hw_txq_free_tfd(priv
, txq
);
354 len
= sizeof(struct iwl_cmd
) * q
->n_window
;
355 if (q
->id
== IWL_CMD_QUEUE_NUM
)
356 len
+= IWL_MAX_SCAN_SIZE
;
358 /* De-alloc array of command/tx buffers */
359 pci_free_consistent(dev
, len
, txq
->cmd
, txq
->dma_addr_cmd
);
361 /* De-alloc circular buffer of TFDs */
363 pci_free_consistent(dev
, sizeof(struct iwl4965_tfd_frame
) *
364 txq
->q
.n_bd
, txq
->bd
, txq
->q
.dma_addr
);
366 /* De-alloc array of per-TFD driver data */
372 /* 0-fill queue descriptor structure */
373 memset(txq
, 0, sizeof(*txq
));
376 const u8 iwl4965_broadcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
378 /*************** STATION TABLE MANAGEMENT ****
379 * mac80211 should be examined to determine if sta_info is duplicating
380 * the functionality provided here
383 /**************************************************************/
385 #if 0 /* temporary disable till we add real remove station */
387 * iwl4965_remove_station - Remove driver's knowledge of station.
389 * NOTE: This does not remove station from device's station table.
391 static u8
iwl4965_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
393 int index
= IWL_INVALID_STATION
;
397 spin_lock_irqsave(&priv
->sta_lock
, flags
);
401 else if (is_broadcast_ether_addr(addr
))
402 index
= priv
->hw_params
.bcast_sta_id
;
404 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++)
405 if (priv
->stations
[i
].used
&&
406 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
412 if (unlikely(index
== IWL_INVALID_STATION
))
415 if (priv
->stations
[index
].used
) {
416 priv
->stations
[index
].used
= 0;
417 priv
->num_stations
--;
420 BUG_ON(priv
->num_stations
< 0);
423 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
429 * iwl4965_add_station_flags - Add station to tables in driver and device
431 u8
iwl4965_add_station_flags(struct iwl_priv
*priv
, const u8
*addr
,
432 int is_ap
, u8 flags
, void *ht_data
)
435 int index
= IWL_INVALID_STATION
;
436 struct iwl4965_station_entry
*station
;
437 unsigned long flags_spin
;
438 DECLARE_MAC_BUF(mac
);
440 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
443 else if (is_broadcast_ether_addr(addr
))
444 index
= priv
->hw_params
.bcast_sta_id
;
446 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++) {
447 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
453 if (!priv
->stations
[i
].used
&&
454 index
== IWL_INVALID_STATION
)
459 /* These two conditions have the same outcome, but keep them separate
460 since they have different meanings */
461 if (unlikely(index
== IWL_INVALID_STATION
)) {
462 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
466 if (priv
->stations
[index
].used
&&
467 !compare_ether_addr(priv
->stations
[index
].sta
.sta
.addr
, addr
)) {
468 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
473 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index
, print_mac(mac
, addr
));
474 station
= &priv
->stations
[index
];
476 priv
->num_stations
++;
478 /* Set up the REPLY_ADD_STA command to send to device */
479 memset(&station
->sta
, 0, sizeof(struct iwl4965_addsta_cmd
));
480 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
481 station
->sta
.mode
= 0;
482 station
->sta
.sta
.sta_id
= index
;
483 station
->sta
.station_flags
= 0;
485 #ifdef CONFIG_IWL4965_HT
486 /* BCAST station and IBSS stations do not work in HT mode */
487 if (index
!= priv
->hw_params
.bcast_sta_id
&&
488 priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
)
489 iwl4965_set_ht_add_station(priv
, index
,
490 (struct ieee80211_ht_info
*) ht_data
);
491 #endif /*CONFIG_IWL4965_HT*/
493 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
495 /* Add station to device's station table */
496 iwl4965_send_add_station(priv
, &station
->sta
, flags
);
503 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
506 * iwl4965_enqueue_hcmd - enqueue a uCode command
507 * @priv: device private data point
508 * @cmd: a point to the ucode command structure
510 * The function returns < 0 values to indicate the operation is
511 * failed. On success, it turns the index (> 0) of command in the
514 int iwl4965_enqueue_hcmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
516 struct iwl4965_tx_queue
*txq
= &priv
->txq
[IWL_CMD_QUEUE_NUM
];
517 struct iwl4965_queue
*q
= &txq
->q
;
518 struct iwl4965_tfd_frame
*tfd
;
520 struct iwl_cmd
*out_cmd
;
522 u16 fix_size
= (u16
)(cmd
->len
+ sizeof(out_cmd
->hdr
));
523 dma_addr_t phys_addr
;
527 /* If any of the command structures end up being larger than
528 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
529 * we will need to increase the size of the TFD entries */
530 BUG_ON((fix_size
> TFD_MAX_PAYLOAD_SIZE
) &&
531 !(cmd
->meta
.flags
& CMD_SIZE_HUGE
));
533 if (iwl_is_rfkill(priv
)) {
534 IWL_DEBUG_INFO("Not sending command - RF KILL");
538 if (iwl4965_queue_space(q
) < ((cmd
->meta
.flags
& CMD_ASYNC
) ? 2 : 1)) {
539 IWL_ERROR("No space for Tx\n");
543 spin_lock_irqsave(&priv
->hcmd_lock
, flags
);
545 tfd
= &txq
->bd
[q
->write_ptr
];
546 memset(tfd
, 0, sizeof(*tfd
));
548 control_flags
= (u32
*) tfd
;
550 idx
= get_cmd_index(q
, q
->write_ptr
, cmd
->meta
.flags
& CMD_SIZE_HUGE
);
551 out_cmd
= &txq
->cmd
[idx
];
553 out_cmd
->hdr
.cmd
= cmd
->id
;
554 memcpy(&out_cmd
->meta
, &cmd
->meta
, sizeof(cmd
->meta
));
555 memcpy(&out_cmd
->cmd
.payload
, cmd
->data
, cmd
->len
);
557 /* At this point, the out_cmd now has all of the incoming cmd
560 out_cmd
->hdr
.flags
= 0;
561 out_cmd
->hdr
.sequence
= cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM
) |
562 INDEX_TO_SEQ(q
->write_ptr
));
563 if (out_cmd
->meta
.flags
& CMD_SIZE_HUGE
)
564 out_cmd
->hdr
.sequence
|= cpu_to_le16(SEQ_HUGE_FRAME
);
566 phys_addr
= txq
->dma_addr_cmd
+ sizeof(txq
->cmd
[0]) * idx
+
567 offsetof(struct iwl_cmd
, hdr
);
568 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, fix_size
);
570 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
571 "%d bytes at %d[%d]:%d\n",
572 get_cmd_string(out_cmd
->hdr
.cmd
),
573 out_cmd
->hdr
.cmd
, le16_to_cpu(out_cmd
->hdr
.sequence
),
574 fix_size
, q
->write_ptr
, idx
, IWL_CMD_QUEUE_NUM
);
576 txq
->need_update
= 1;
578 /* Set up entry in queue's byte count circular buffer */
579 priv
->cfg
->ops
->lib
->txq_update_byte_cnt_tbl(priv
, txq
, 0);
581 /* Increment and update queue's write index */
582 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
583 ret
= iwl4965_tx_queue_update_write_ptr(priv
, txq
);
585 spin_unlock_irqrestore(&priv
->hcmd_lock
, flags
);
586 return ret
? ret
: idx
;
589 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv
*priv
, int hw_decrypt
)
591 struct iwl4965_rxon_cmd
*rxon
= &priv
->staging_rxon
;
594 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
596 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
601 * iwl4965_rxon_add_station - add station into station table.
603 * there is only one AP station with id= IWL_AP_ID
604 * NOTE: mutex must be held before calling this fnction
606 static int iwl4965_rxon_add_station(struct iwl_priv
*priv
,
607 const u8
*addr
, int is_ap
)
611 /* Add station to device's station table */
612 #ifdef CONFIG_IWL4965_HT
613 struct ieee80211_conf
*conf
= &priv
->hw
->conf
;
614 struct ieee80211_ht_info
*cur_ht_config
= &conf
->ht_conf
;
617 (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) &&
618 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
619 sta_id
= iwl4965_add_station_flags(priv
, addr
, is_ap
,
622 #endif /* CONFIG_IWL4965_HT */
623 sta_id
= iwl4965_add_station_flags(priv
, addr
, is_ap
,
626 /* Set up default rate scaling table in device's station table */
627 iwl4965_add_station(priv
, addr
, is_ap
);
633 * iwl4965_check_rxon_cmd - validate RXON structure is valid
635 * NOTE: This is really only useful during development and can eventually
636 * be #ifdef'd out once the driver is stable and folks aren't actively
639 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd
*rxon
)
644 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
645 error
|= le32_to_cpu(rxon
->flags
&
646 (RXON_FLG_TGJ_NARROW_BAND_MSK
|
647 RXON_FLG_RADAR_DETECT_MSK
));
649 IWL_WARNING("check 24G fields %d | %d\n",
652 error
|= (rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
) ?
653 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK
);
655 IWL_WARNING("check 52 fields %d | %d\n",
657 error
|= le32_to_cpu(rxon
->flags
& RXON_FLG_CCK_MSK
);
659 IWL_WARNING("check 52 CCK %d | %d\n",
662 error
|= (rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1;
664 IWL_WARNING("check mac addr %d | %d\n", counter
++, error
);
666 /* make sure basic rates 6Mbps and 1Mbps are supported */
667 error
|= (((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0) &&
668 ((rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0));
670 IWL_WARNING("check basic rate %d | %d\n", counter
++, error
);
672 error
|= (le16_to_cpu(rxon
->assoc_id
) > 2007);
674 IWL_WARNING("check assoc id %d | %d\n", counter
++, error
);
676 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
677 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
));
679 IWL_WARNING("check CCK and short slot %d | %d\n",
682 error
|= ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
683 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
));
685 IWL_WARNING("check CCK & auto detect %d | %d\n",
688 error
|= ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
689 RXON_FLG_TGG_PROTECT_MSK
)) == RXON_FLG_TGG_PROTECT_MSK
);
691 IWL_WARNING("check TGG and auto detect %d | %d\n",
695 IWL_WARNING("Tuning to channel %d\n",
696 le16_to_cpu(rxon
->channel
));
699 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
706 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
707 * @priv: staging_rxon is compared to active_rxon
709 * If the RXON structure is changing enough to require a new tune,
710 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
711 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
713 static int iwl4965_full_rxon_required(struct iwl_priv
*priv
)
716 /* These items are only settable from the full RXON command */
717 if (!(priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) ||
718 compare_ether_addr(priv
->staging_rxon
.bssid_addr
,
719 priv
->active_rxon
.bssid_addr
) ||
720 compare_ether_addr(priv
->staging_rxon
.node_addr
,
721 priv
->active_rxon
.node_addr
) ||
722 compare_ether_addr(priv
->staging_rxon
.wlap_bssid_addr
,
723 priv
->active_rxon
.wlap_bssid_addr
) ||
724 (priv
->staging_rxon
.dev_type
!= priv
->active_rxon
.dev_type
) ||
725 (priv
->staging_rxon
.channel
!= priv
->active_rxon
.channel
) ||
726 (priv
->staging_rxon
.air_propagation
!=
727 priv
->active_rxon
.air_propagation
) ||
728 (priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
!=
729 priv
->active_rxon
.ofdm_ht_single_stream_basic_rates
) ||
730 (priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
!=
731 priv
->active_rxon
.ofdm_ht_dual_stream_basic_rates
) ||
732 (priv
->staging_rxon
.rx_chain
!= priv
->active_rxon
.rx_chain
) ||
733 (priv
->staging_rxon
.assoc_id
!= priv
->active_rxon
.assoc_id
))
736 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
737 * be updated with the RXON_ASSOC command -- however only some
738 * flag transitions are allowed using RXON_ASSOC */
740 /* Check if we are not switching bands */
741 if ((priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) !=
742 (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
))
745 /* Check if we are switching association toggle */
746 if ((priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) !=
747 (priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
))
754 * iwl4965_commit_rxon - commit staging_rxon to hardware
756 * The RXON command in staging_rxon is committed to the hardware and
757 * the active_rxon structure is updated with the new data. This
758 * function correctly transitions out of the RXON_ASSOC_MSK state if
759 * a HW tune is required based on the RXON structure changes.
761 static int iwl4965_commit_rxon(struct iwl_priv
*priv
)
763 /* cast away the const for active_rxon in this function */
764 struct iwl4965_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
765 DECLARE_MAC_BUF(mac
);
768 if (!iwl_is_alive(priv
))
771 /* always get timestamp with Rx frame */
772 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
774 rc
= iwl4965_check_rxon_cmd(&priv
->staging_rxon
);
776 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
780 /* If we don't need to send a full RXON, we can use
781 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
782 * and other flags for the current radio configuration. */
783 if (!iwl4965_full_rxon_required(priv
)) {
784 rc
= iwl_send_rxon_assoc(priv
);
786 IWL_ERROR("Error setting RXON_ASSOC "
787 "configuration (%d).\n", rc
);
791 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
796 /* station table will be cleared */
797 priv
->assoc_station_added
= 0;
799 /* If we are currently associated and the new config requires
800 * an RXON_ASSOC and the new config wants the associated mask enabled,
801 * we must clear the associated from the active configuration
802 * before we apply the new config */
803 if (iwl_is_associated(priv
) &&
804 (priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
)) {
805 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
806 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
808 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
809 sizeof(struct iwl4965_rxon_cmd
),
812 /* If the mask clearing failed then we set
813 * active_rxon back to what it was previously */
815 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
816 IWL_ERROR("Error clearing ASSOC_MSK on current "
817 "configuration (%d).\n", rc
);
822 IWL_DEBUG_INFO("Sending RXON\n"
823 "* with%s RXON_FILTER_ASSOC_MSK\n"
826 ((priv
->staging_rxon
.filter_flags
&
827 RXON_FILTER_ASSOC_MSK
) ? "" : "out"),
828 le16_to_cpu(priv
->staging_rxon
.channel
),
829 print_mac(mac
, priv
->staging_rxon
.bssid_addr
));
831 iwl4965_set_rxon_hwcrypto(priv
, !priv
->hw_params
.sw_crypto
);
832 /* Apply the new configuration */
833 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
834 sizeof(struct iwl4965_rxon_cmd
), &priv
->staging_rxon
);
836 IWL_ERROR("Error setting new configuration (%d).\n", rc
);
840 iwlcore_clear_stations_table(priv
);
842 if (!priv
->error_recovering
)
843 priv
->start_calib
= 0;
845 iwl_init_sensitivity(priv
);
847 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
849 /* If we issue a new RXON command which required a tune then we must
850 * send a new TXPOWER command or we won't be able to Tx any frames */
851 rc
= iwl4965_hw_reg_send_txpower(priv
);
853 IWL_ERROR("Error setting Tx power (%d).\n", rc
);
857 /* Add the broadcast address so we can send broadcast frames */
858 if (iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0) ==
859 IWL_INVALID_STATION
) {
860 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
864 /* If we have set the ASSOC_MSK and we are in BSS mode then
865 * add the IWL_AP_ID to the station rate table */
866 if (iwl_is_associated(priv
) &&
867 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
868 if (iwl4965_rxon_add_station(priv
, priv
->active_rxon
.bssid_addr
, 1)
869 == IWL_INVALID_STATION
) {
870 IWL_ERROR("Error adding AP address for transmit.\n");
873 priv
->assoc_station_added
= 1;
874 if (priv
->default_wep_key
&&
875 iwl_send_static_wepkey_cmd(priv
, 0))
876 IWL_ERROR("Could not send WEP static key.\n");
882 void iwl4965_update_chain_flags(struct iwl_priv
*priv
)
885 iwl4965_set_rxon_chain(priv
);
886 iwl4965_commit_rxon(priv
);
889 static int iwl4965_send_bt_config(struct iwl_priv
*priv
)
891 struct iwl4965_bt_cmd bt_cmd
= {
899 return iwl_send_cmd_pdu(priv
, REPLY_BT_CONFIG
,
900 sizeof(struct iwl4965_bt_cmd
), &bt_cmd
);
903 static int iwl4965_send_scan_abort(struct iwl_priv
*priv
)
906 struct iwl4965_rx_packet
*res
;
907 struct iwl_host_cmd cmd
= {
908 .id
= REPLY_SCAN_ABORT_CMD
,
909 .meta
.flags
= CMD_WANT_SKB
,
912 /* If there isn't a scan actively going on in the hardware
913 * then we are in between scan bands and not actually
914 * actively scanning, so don't send the abort command */
915 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
916 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
920 rc
= iwl_send_cmd_sync(priv
, &cmd
);
922 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
926 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
927 if (res
->u
.status
!= CAN_ABORT_STATUS
) {
928 /* The scan abort will return 1 for success or
929 * 2 for "failure". A failure condition can be
930 * due to simply not being in an active scan which
931 * can occur if we send the scan abort before we
932 * the microcode has notified us that a scan is
934 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res
->u
.status
);
935 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
936 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
939 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
947 * Use: Sets the device's internal card state to enable, disable, or halt
949 * When in the 'enable' state the card operates as normal.
950 * When in the 'disable' state, the card enters into a low power mode.
951 * When in the 'halt' state, the card is shut down and must be fully
952 * restarted to come back on.
954 static int iwl4965_send_card_state(struct iwl_priv
*priv
, u32 flags
, u8 meta_flag
)
956 struct iwl_host_cmd cmd
= {
957 .id
= REPLY_CARD_STATE_CMD
,
960 .meta
.flags
= meta_flag
,
963 return iwl_send_cmd(priv
, &cmd
);
966 int iwl4965_send_add_station(struct iwl_priv
*priv
,
967 struct iwl4965_addsta_cmd
*sta
, u8 flags
)
969 struct iwl4965_rx_packet
*res
= NULL
;
971 struct iwl_host_cmd cmd
= {
973 .len
= sizeof(struct iwl4965_addsta_cmd
),
978 if (!(flags
& CMD_ASYNC
))
979 cmd
.meta
.flags
|= CMD_WANT_SKB
;
981 rc
= iwl_send_cmd(priv
, &cmd
);
983 if (rc
|| (flags
& CMD_ASYNC
))
986 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
987 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
988 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
994 switch (res
->u
.add_sta
.status
) {
995 case ADD_STA_SUCCESS_MSK
:
996 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1000 IWL_WARNING("REPLY_ADD_STA failed\n");
1005 priv
->alloc_rxb_skb
--;
1006 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1011 static void iwl4965_clear_free_frames(struct iwl_priv
*priv
)
1013 struct list_head
*element
;
1015 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1016 priv
->frames_count
);
1018 while (!list_empty(&priv
->free_frames
)) {
1019 element
= priv
->free_frames
.next
;
1021 kfree(list_entry(element
, struct iwl4965_frame
, list
));
1022 priv
->frames_count
--;
1025 if (priv
->frames_count
) {
1026 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1027 priv
->frames_count
);
1028 priv
->frames_count
= 0;
1032 static struct iwl4965_frame
*iwl4965_get_free_frame(struct iwl_priv
*priv
)
1034 struct iwl4965_frame
*frame
;
1035 struct list_head
*element
;
1036 if (list_empty(&priv
->free_frames
)) {
1037 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
1039 IWL_ERROR("Could not allocate frame!\n");
1043 priv
->frames_count
++;
1047 element
= priv
->free_frames
.next
;
1049 return list_entry(element
, struct iwl4965_frame
, list
);
1052 static void iwl4965_free_frame(struct iwl_priv
*priv
, struct iwl4965_frame
*frame
)
1054 memset(frame
, 0, sizeof(*frame
));
1055 list_add(&frame
->list
, &priv
->free_frames
);
1058 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv
*priv
,
1059 struct ieee80211_hdr
*hdr
,
1060 const u8
*dest
, int left
)
1063 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
1064 ((priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) &&
1065 (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
)))
1068 if (priv
->ibss_beacon
->len
> left
)
1071 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
1073 return priv
->ibss_beacon
->len
;
1076 static u8
iwl4965_rate_get_lowest_plcp(int rate_mask
)
1080 for (i
= IWL_RATE_1M_INDEX
; i
!= IWL_RATE_INVALID
;
1081 i
= iwl4965_rates
[i
].next_ieee
) {
1082 if (rate_mask
& (1 << i
))
1083 return iwl4965_rates
[i
].plcp
;
1086 return IWL_RATE_INVALID
;
1089 static int iwl4965_send_beacon_cmd(struct iwl_priv
*priv
)
1091 struct iwl4965_frame
*frame
;
1092 unsigned int frame_size
;
1096 frame
= iwl4965_get_free_frame(priv
);
1099 IWL_ERROR("Could not obtain free frame buffer for beacon "
1104 if (!(priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)) {
1105 rate
= iwl4965_rate_get_lowest_plcp(priv
->active_rate_basic
&
1107 if (rate
== IWL_INVALID_RATE
)
1108 rate
= IWL_RATE_6M_PLCP
;
1110 rate
= iwl4965_rate_get_lowest_plcp(priv
->active_rate_basic
& 0xF);
1111 if (rate
== IWL_INVALID_RATE
)
1112 rate
= IWL_RATE_1M_PLCP
;
1115 frame_size
= iwl4965_hw_get_beacon_cmd(priv
, frame
, rate
);
1117 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
1120 iwl4965_free_frame(priv
, frame
);
1125 /******************************************************************************
1127 * Misc. internal state and helper functions
1129 ******************************************************************************/
1132 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1134 * return : set the bit for each supported rate insert in ie
1136 static u16
iwl4965_supported_rate_to_ie(u8
*ie
, u16 supported_rate
,
1137 u16 basic_rate
, int *left
)
1139 u16 ret_rates
= 0, bit
;
1144 for (bit
= 1, i
= 0; i
< IWL_RATE_COUNT
; i
++, bit
<<= 1) {
1145 if (bit
& supported_rate
) {
1147 rates
[*cnt
] = iwl4965_rates
[i
].ieee
|
1148 ((bit
& basic_rate
) ? 0x80 : 0x00);
1152 (*cnt
>= IWL_SUPPORTED_RATES_IE_LEN
))
1160 #ifdef CONFIG_IWL4965_HT
1161 static void iwl4965_ht_conf(struct iwl_priv
*priv
,
1162 struct ieee80211_bss_conf
*bss_conf
)
1164 struct ieee80211_ht_info
*ht_conf
= bss_conf
->ht_conf
;
1165 struct ieee80211_ht_bss_info
*ht_bss_conf
= bss_conf
->ht_bss_conf
;
1166 struct iwl_ht_info
*iwl_conf
= &priv
->current_ht_config
;
1168 IWL_DEBUG_MAC80211("enter: \n");
1170 iwl_conf
->is_ht
= bss_conf
->assoc_ht
;
1172 if (!iwl_conf
->is_ht
)
1175 priv
->ps_mode
= (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_MIMO_PS
) >> 2);
1177 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_20
)
1178 iwl_conf
->sgf
|= 0x1;
1179 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_40
)
1180 iwl_conf
->sgf
|= 0x2;
1182 iwl_conf
->is_green_field
= !!(ht_conf
->cap
& IEEE80211_HT_CAP_GRN_FLD
);
1183 iwl_conf
->max_amsdu_size
=
1184 !!(ht_conf
->cap
& IEEE80211_HT_CAP_MAX_AMSDU
);
1186 iwl_conf
->supported_chan_width
=
1187 !!(ht_conf
->cap
& IEEE80211_HT_CAP_SUP_WIDTH
);
1188 iwl_conf
->extension_chan_offset
=
1189 ht_bss_conf
->bss_cap
& IEEE80211_HT_IE_CHA_SEC_OFFSET
;
1190 /* If no above or below channel supplied disable FAT channel */
1191 if (iwl_conf
->extension_chan_offset
!= IWL_EXT_CHANNEL_OFFSET_ABOVE
&&
1192 iwl_conf
->extension_chan_offset
!= IWL_EXT_CHANNEL_OFFSET_BELOW
)
1193 iwl_conf
->supported_chan_width
= 0;
1195 iwl_conf
->tx_mimo_ps_mode
=
1196 (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_MIMO_PS
) >> 2);
1197 memcpy(iwl_conf
->supp_mcs_set
, ht_conf
->supp_mcs_set
, 16);
1199 iwl_conf
->control_channel
= ht_bss_conf
->primary_channel
;
1200 iwl_conf
->tx_chan_width
=
1201 !!(ht_bss_conf
->bss_cap
& IEEE80211_HT_IE_CHA_WIDTH
);
1202 iwl_conf
->ht_protection
=
1203 ht_bss_conf
->bss_op_mode
& IEEE80211_HT_IE_HT_PROTECTION
;
1204 iwl_conf
->non_GF_STA_present
=
1205 !!(ht_bss_conf
->bss_op_mode
& IEEE80211_HT_IE_NON_GF_STA_PRSNT
);
1207 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf
->control_channel
);
1208 IWL_DEBUG_MAC80211("leave\n");
1211 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band
*sband
,
1214 struct ieee80211_ht_cap
*ht_cap
;
1216 if (!sband
|| !sband
->ht_info
.ht_supported
)
1219 if (*left
< sizeof(struct ieee80211_ht_cap
))
1222 *pos
++ = sizeof(struct ieee80211_ht_cap
);
1223 ht_cap
= (struct ieee80211_ht_cap
*) pos
;
1225 ht_cap
->cap_info
= cpu_to_le16(sband
->ht_info
.cap
);
1226 memcpy(ht_cap
->supp_mcs_set
, sband
->ht_info
.supp_mcs_set
, 16);
1227 ht_cap
->ampdu_params_info
=
1228 (sband
->ht_info
.ampdu_factor
& IEEE80211_HT_CAP_AMPDU_FACTOR
) |
1229 ((sband
->ht_info
.ampdu_density
<< 2) &
1230 IEEE80211_HT_CAP_AMPDU_DENSITY
);
1231 *left
-= sizeof(struct ieee80211_ht_cap
);
1234 static inline void iwl4965_ht_conf(struct iwl_priv
*priv
,
1235 struct ieee80211_bss_conf
*bss_conf
)
1238 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band
*sband
,
1246 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1248 static u16
iwl4965_fill_probe_req(struct iwl_priv
*priv
,
1249 enum ieee80211_band band
,
1250 struct ieee80211_mgmt
*frame
,
1251 int left
, int is_direct
)
1255 u16 active_rates
, ret_rates
, cck_rates
, active_rate_basic
;
1256 const struct ieee80211_supported_band
*sband
=
1257 iwl_get_hw_mode(priv
, band
);
1259 /* Make sure there is enough space for the probe request,
1260 * two mandatory IEs and the data */
1266 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
1267 memcpy(frame
->da
, iwl4965_broadcast_addr
, ETH_ALEN
);
1268 memcpy(frame
->sa
, priv
->mac_addr
, ETH_ALEN
);
1269 memcpy(frame
->bssid
, iwl4965_broadcast_addr
, ETH_ALEN
);
1270 frame
->seq_ctrl
= 0;
1272 /* fill in our indirect SSID IE */
1279 pos
= &(frame
->u
.probe_req
.variable
[0]);
1280 *pos
++ = WLAN_EID_SSID
;
1283 /* fill in our direct SSID IE... */
1286 left
-= 2 + priv
->essid_len
;
1289 /* ... fill it in... */
1290 *pos
++ = WLAN_EID_SSID
;
1291 *pos
++ = priv
->essid_len
;
1292 memcpy(pos
, priv
->essid
, priv
->essid_len
);
1293 pos
+= priv
->essid_len
;
1294 len
+= 2 + priv
->essid_len
;
1297 /* fill in supported rate */
1303 /* ... fill it in... */
1304 *pos
++ = WLAN_EID_SUPP_RATES
;
1307 /* exclude 60M rate */
1308 active_rates
= priv
->rates_mask
;
1309 active_rates
&= ~IWL_RATE_60M_MASK
;
1311 active_rate_basic
= active_rates
& IWL_BASIC_RATES_MASK
;
1313 cck_rates
= IWL_CCK_RATES_MASK
& active_rates
;
1314 ret_rates
= iwl4965_supported_rate_to_ie(pos
, cck_rates
,
1315 active_rate_basic
, &left
);
1316 active_rates
&= ~ret_rates
;
1318 ret_rates
= iwl4965_supported_rate_to_ie(pos
, active_rates
,
1319 active_rate_basic
, &left
);
1320 active_rates
&= ~ret_rates
;
1324 if (active_rates
== 0)
1327 /* fill in supported extended rate */
1332 /* ... fill it in... */
1333 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1335 iwl4965_supported_rate_to_ie(pos
, active_rates
,
1336 active_rate_basic
, &left
);
1346 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1349 iwl_ht_cap_to_ie(sband
, pos
, &left
);
1359 static int iwl4965_send_qos_params_command(struct iwl_priv
*priv
,
1360 struct iwl4965_qosparam_cmd
*qos
)
1363 return iwl_send_cmd_pdu(priv
, REPLY_QOS_PARAM
,
1364 sizeof(struct iwl4965_qosparam_cmd
), qos
);
1367 static void iwl4965_activate_qos(struct iwl_priv
*priv
, u8 force
)
1369 unsigned long flags
;
1371 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1374 if (!priv
->qos_data
.qos_enable
)
1377 spin_lock_irqsave(&priv
->lock
, flags
);
1378 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
1380 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
1381 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
1382 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1383 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
1384 if (priv
->qos_data
.qos_active
)
1385 priv
->qos_data
.def_qos_parm
.qos_flags
|=
1386 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
1388 #ifdef CONFIG_IWL4965_HT
1389 if (priv
->current_ht_config
.is_ht
)
1390 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
1391 #endif /* CONFIG_IWL4965_HT */
1393 spin_unlock_irqrestore(&priv
->lock
, flags
);
1395 if (force
|| iwl_is_associated(priv
)) {
1396 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1397 priv
->qos_data
.qos_active
,
1398 priv
->qos_data
.def_qos_parm
.qos_flags
);
1400 iwl4965_send_qos_params_command(priv
,
1401 &(priv
->qos_data
.def_qos_parm
));
1405 int iwl4965_is_network_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
1407 /* Filter incoming packets to determine if they are targeted toward
1408 * this network, discarding packets coming from ourselves */
1409 switch (priv
->iw_mode
) {
1410 case IEEE80211_IF_TYPE_IBSS
: /* Header: Dest. | Source | BSSID */
1411 /* packets from our adapter are dropped (echo) */
1412 if (!compare_ether_addr(header
->addr2
, priv
->mac_addr
))
1414 /* {broad,multi}cast packets to our IBSS go through */
1415 if (is_multicast_ether_addr(header
->addr1
))
1416 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
1417 /* packets to our adapter go through */
1418 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1419 case IEEE80211_IF_TYPE_STA
: /* Header: Dest. | AP{BSSID} | Source */
1420 /* packets from our adapter are dropped (echo) */
1421 if (!compare_ether_addr(header
->addr3
, priv
->mac_addr
))
1423 /* {broad,multi}cast packets to our BSS go through */
1424 if (is_multicast_ether_addr(header
->addr1
))
1425 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
1426 /* packets to our adapter go through */
1427 return !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
1435 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1437 static const char *iwl4965_get_tx_fail_reason(u32 status
)
1439 switch (status
& TX_STATUS_MSK
) {
1440 case TX_STATUS_SUCCESS
:
1442 TX_STATUS_ENTRY(SHORT_LIMIT
);
1443 TX_STATUS_ENTRY(LONG_LIMIT
);
1444 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
1445 TX_STATUS_ENTRY(MGMNT_ABORT
);
1446 TX_STATUS_ENTRY(NEXT_FRAG
);
1447 TX_STATUS_ENTRY(LIFE_EXPIRE
);
1448 TX_STATUS_ENTRY(DEST_PS
);
1449 TX_STATUS_ENTRY(ABORTED
);
1450 TX_STATUS_ENTRY(BT_RETRY
);
1451 TX_STATUS_ENTRY(STA_INVALID
);
1452 TX_STATUS_ENTRY(FRAG_DROPPED
);
1453 TX_STATUS_ENTRY(TID_DISABLE
);
1454 TX_STATUS_ENTRY(FRAME_FLUSHED
);
1455 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
1456 TX_STATUS_ENTRY(TX_LOCKED
);
1457 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
1464 * iwl4965_scan_cancel - Cancel any currently executing HW scan
1466 * NOTE: priv->mutex is not required before calling this function
1468 static int iwl4965_scan_cancel(struct iwl_priv
*priv
)
1470 if (!test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1471 clear_bit(STATUS_SCANNING
, &priv
->status
);
1475 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1476 if (!test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
1477 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1478 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
1479 queue_work(priv
->workqueue
, &priv
->abort_scan
);
1482 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1484 return test_bit(STATUS_SCANNING
, &priv
->status
);
1491 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1492 * @ms: amount of time to wait (in milliseconds) for scan to abort
1494 * NOTE: priv->mutex must be held before calling this function
1496 static int iwl4965_scan_cancel_timeout(struct iwl_priv
*priv
, unsigned long ms
)
1498 unsigned long now
= jiffies
;
1501 ret
= iwl4965_scan_cancel(priv
);
1503 mutex_unlock(&priv
->mutex
);
1504 while (!time_after(jiffies
, now
+ msecs_to_jiffies(ms
)) &&
1505 test_bit(STATUS_SCANNING
, &priv
->status
))
1507 mutex_lock(&priv
->mutex
);
1509 return test_bit(STATUS_SCANNING
, &priv
->status
);
1515 static void iwl4965_sequence_reset(struct iwl_priv
*priv
)
1517 /* Reset ieee stats */
1519 /* We don't reset the net_device_stats (ieee->stats) on
1522 priv
->last_seq_num
= -1;
1523 priv
->last_frag_num
= -1;
1524 priv
->last_packet_time
= 0;
1526 iwl4965_scan_cancel(priv
);
1529 #define MAX_UCODE_BEACON_INTERVAL 4096
1530 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1532 static __le16
iwl4965_adjust_beacon_interval(u16 beacon_val
)
1535 u16 beacon_factor
= 0;
1538 (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
1539 / MAX_UCODE_BEACON_INTERVAL
;
1540 new_val
= beacon_val
/ beacon_factor
;
1542 return cpu_to_le16(new_val
);
1545 static void iwl4965_setup_rxon_timing(struct iwl_priv
*priv
)
1547 u64 interval_tm_unit
;
1549 unsigned long flags
;
1550 struct ieee80211_conf
*conf
= NULL
;
1553 conf
= ieee80211_get_hw_conf(priv
->hw
);
1555 spin_lock_irqsave(&priv
->lock
, flags
);
1556 priv
->rxon_timing
.timestamp
.dw
[1] = cpu_to_le32(priv
->timestamp
>> 32);
1557 priv
->rxon_timing
.timestamp
.dw
[0] =
1558 cpu_to_le32(priv
->timestamp
& 0xFFFFFFFF);
1560 priv
->rxon_timing
.listen_interval
= INTEL_CONN_LISTEN_INTERVAL
;
1562 tsf
= priv
->timestamp
;
1564 beacon_int
= priv
->beacon_int
;
1565 spin_unlock_irqrestore(&priv
->lock
, flags
);
1567 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) {
1568 if (beacon_int
== 0) {
1569 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(100);
1570 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(102400);
1572 priv
->rxon_timing
.beacon_interval
=
1573 cpu_to_le16(beacon_int
);
1574 priv
->rxon_timing
.beacon_interval
=
1575 iwl4965_adjust_beacon_interval(
1576 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
1579 priv
->rxon_timing
.atim_window
= 0;
1581 priv
->rxon_timing
.beacon_interval
=
1582 iwl4965_adjust_beacon_interval(conf
->beacon_int
);
1583 /* TODO: we need to get atim_window from upper stack
1584 * for now we set to 0 */
1585 priv
->rxon_timing
.atim_window
= 0;
1589 (le16_to_cpu(priv
->rxon_timing
.beacon_interval
) * 1024);
1590 result
= do_div(tsf
, interval_tm_unit
);
1591 priv
->rxon_timing
.beacon_init_val
=
1592 cpu_to_le32((u32
) ((u64
) interval_tm_unit
- result
));
1595 ("beacon interval %d beacon timer %d beacon tim %d\n",
1596 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
1597 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
1598 le16_to_cpu(priv
->rxon_timing
.atim_window
));
1601 static int iwl4965_scan_initiate(struct iwl_priv
*priv
)
1603 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
1604 IWL_ERROR("APs don't scan.\n");
1608 if (!iwl_is_ready_rf(priv
)) {
1609 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1613 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1614 IWL_DEBUG_SCAN("Scan already in progress.\n");
1618 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
1619 IWL_DEBUG_SCAN("Scan request while abort pending. "
1624 IWL_DEBUG_INFO("Starting scan...\n");
1625 priv
->scan_bands
= 2;
1626 set_bit(STATUS_SCANNING
, &priv
->status
);
1627 priv
->scan_start
= jiffies
;
1628 priv
->scan_pass_start
= priv
->scan_start
;
1630 queue_work(priv
->workqueue
, &priv
->request_scan
);
1636 static void iwl4965_set_flags_for_phymode(struct iwl_priv
*priv
,
1637 enum ieee80211_band band
)
1639 if (band
== IEEE80211_BAND_5GHZ
) {
1640 priv
->staging_rxon
.flags
&=
1641 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
1642 | RXON_FLG_CCK_MSK
);
1643 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1645 /* Copied from iwl4965_post_associate() */
1646 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1647 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1649 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1651 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
1652 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1654 priv
->staging_rxon
.flags
|= RXON_FLG_BAND_24G_MSK
;
1655 priv
->staging_rxon
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
1656 priv
->staging_rxon
.flags
&= ~RXON_FLG_CCK_MSK
;
1661 * initialize rxon structure with default values from eeprom
1663 static void iwl4965_connection_init_rx_config(struct iwl_priv
*priv
)
1665 const struct iwl_channel_info
*ch_info
;
1667 memset(&priv
->staging_rxon
, 0, sizeof(priv
->staging_rxon
));
1669 switch (priv
->iw_mode
) {
1670 case IEEE80211_IF_TYPE_AP
:
1671 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_AP
;
1674 case IEEE80211_IF_TYPE_STA
:
1675 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_ESS
;
1676 priv
->staging_rxon
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
1679 case IEEE80211_IF_TYPE_IBSS
:
1680 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_IBSS
;
1681 priv
->staging_rxon
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
1682 priv
->staging_rxon
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
1683 RXON_FILTER_ACCEPT_GRP_MSK
;
1686 case IEEE80211_IF_TYPE_MNTR
:
1687 priv
->staging_rxon
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
1688 priv
->staging_rxon
.filter_flags
= RXON_FILTER_PROMISC_MSK
|
1689 RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_ACCEPT_GRP_MSK
;
1692 IWL_ERROR("Unsupported interface type %d\n", priv
->iw_mode
);
1697 /* TODO: Figure out when short_preamble would be set and cache from
1699 if (!hw_to_local(priv
->hw
)->short_preamble
)
1700 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1702 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1705 ch_info
= iwl_get_channel_info(priv
, priv
->band
,
1706 le16_to_cpu(priv
->staging_rxon
.channel
));
1709 ch_info
= &priv
->channel_info
[0];
1712 * in some case A channels are all non IBSS
1713 * in this case force B/G channel
1715 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
1716 !(is_channel_ibss(ch_info
)))
1717 ch_info
= &priv
->channel_info
[0];
1719 priv
->staging_rxon
.channel
= cpu_to_le16(ch_info
->channel
);
1720 priv
->band
= ch_info
->band
;
1722 iwl4965_set_flags_for_phymode(priv
, priv
->band
);
1724 priv
->staging_rxon
.ofdm_basic_rates
=
1725 (IWL_OFDM_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
1726 priv
->staging_rxon
.cck_basic_rates
=
1727 (IWL_CCK_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
1729 priv
->staging_rxon
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
1730 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
1731 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1732 memcpy(priv
->staging_rxon
.wlap_bssid_addr
, priv
->mac_addr
, ETH_ALEN
);
1733 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
= 0xff;
1734 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
= 0xff;
1735 iwl4965_set_rxon_chain(priv
);
1738 static int iwl4965_set_mode(struct iwl_priv
*priv
, int mode
)
1740 if (mode
== IEEE80211_IF_TYPE_IBSS
) {
1741 const struct iwl_channel_info
*ch_info
;
1743 ch_info
= iwl_get_channel_info(priv
,
1745 le16_to_cpu(priv
->staging_rxon
.channel
));
1747 if (!ch_info
|| !is_channel_ibss(ch_info
)) {
1748 IWL_ERROR("channel %d not IBSS channel\n",
1749 le16_to_cpu(priv
->staging_rxon
.channel
));
1754 priv
->iw_mode
= mode
;
1756 iwl4965_connection_init_rx_config(priv
);
1757 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1759 iwlcore_clear_stations_table(priv
);
1761 /* dont commit rxon if rf-kill is on*/
1762 if (!iwl_is_ready_rf(priv
))
1765 cancel_delayed_work(&priv
->scan_check
);
1766 if (iwl4965_scan_cancel_timeout(priv
, 100)) {
1767 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1768 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1772 iwl4965_commit_rxon(priv
);
1777 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv
*priv
,
1778 struct ieee80211_tx_control
*ctl
,
1779 struct iwl_cmd
*cmd
,
1780 struct sk_buff
*skb_frag
,
1783 struct iwl4965_hw_key
*keyinfo
= &priv
->stations
[sta_id
].keyinfo
;
1784 struct iwl_wep_key
*wepkey
;
1787 BUG_ON(ctl
->hw_key
->hw_key_idx
> 3);
1789 switch (keyinfo
->alg
) {
1791 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_CCM
;
1792 memcpy(cmd
->cmd
.tx
.key
, keyinfo
->key
, keyinfo
->keylen
);
1793 if (ctl
->flags
& IEEE80211_TXCTL_AMPDU
)
1794 cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_AGG_CCMP_MSK
;
1795 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1799 cmd
->cmd
.tx
.sec_ctl
= TX_CMD_SEC_TKIP
;
1800 ieee80211_get_tkip_key(keyinfo
->conf
, skb_frag
,
1801 IEEE80211_TKIP_P2_KEY
, cmd
->cmd
.tx
.key
);
1802 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
1806 wepkey
= &priv
->wep_keys
[ctl
->hw_key
->hw_key_idx
];
1807 cmd
->cmd
.tx
.sec_ctl
= 0;
1808 if (priv
->default_wep_key
) {
1809 /* the WEP key was sent as static */
1810 keyidx
= ctl
->hw_key
->hw_key_idx
;
1811 memcpy(&cmd
->cmd
.tx
.key
[3], wepkey
->key
,
1813 if (wepkey
->key_size
== WEP_KEY_LEN_128
)
1814 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
1816 /* the WEP key was sent as dynamic */
1817 keyidx
= keyinfo
->keyidx
;
1818 memcpy(&cmd
->cmd
.tx
.key
[3], keyinfo
->key
,
1820 if (keyinfo
->keylen
== WEP_KEY_LEN_128
)
1821 cmd
->cmd
.tx
.sec_ctl
|= TX_CMD_SEC_KEY128
;
1824 cmd
->cmd
.tx
.sec_ctl
|= (TX_CMD_SEC_WEP
|
1825 (keyidx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
);
1827 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1828 "with key %d\n", keyidx
);
1832 printk(KERN_ERR
"Unknown encode alg %d\n", keyinfo
->alg
);
1838 * handle build REPLY_TX command notification.
1840 static void iwl4965_build_tx_cmd_basic(struct iwl_priv
*priv
,
1841 struct iwl_cmd
*cmd
,
1842 struct ieee80211_tx_control
*ctrl
,
1843 struct ieee80211_hdr
*hdr
,
1844 int is_unicast
, u8 std_id
)
1847 u16 fc
= le16_to_cpu(hdr
->frame_control
);
1848 __le32 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
1850 cmd
->cmd
.tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
1851 if (!(ctrl
->flags
& IEEE80211_TXCTL_NO_ACK
)) {
1852 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
1853 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
)
1854 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
1855 if (ieee80211_is_probe_response(fc
) &&
1856 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
1857 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
1859 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
1860 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
1863 if (ieee80211_is_back_request(fc
))
1864 tx_flags
|= TX_CMD_FLG_ACK_MSK
| TX_CMD_FLG_IMM_BA_RSP_MASK
;
1867 cmd
->cmd
.tx
.sta_id
= std_id
;
1868 if (ieee80211_get_morefrag(hdr
))
1869 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
1871 qc
= ieee80211_get_qos_ctrl(hdr
);
1873 cmd
->cmd
.tx
.tid_tspec
= (u8
) (le16_to_cpu(*qc
) & 0xf);
1874 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
1876 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
1878 if (ctrl
->flags
& IEEE80211_TXCTL_USE_RTS_CTS
) {
1879 tx_flags
|= TX_CMD_FLG_RTS_MSK
;
1880 tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
1881 } else if (ctrl
->flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
) {
1882 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
1883 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
1886 if ((tx_flags
& TX_CMD_FLG_RTS_MSK
) || (tx_flags
& TX_CMD_FLG_CTS_MSK
))
1887 tx_flags
|= TX_CMD_FLG_FULL_TXOP_PROT_MSK
;
1889 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
1890 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
1891 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_ASSOC_REQ
||
1892 (fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_REASSOC_REQ
)
1893 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(3);
1895 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= cpu_to_le16(2);
1897 cmd
->cmd
.tx
.timeout
.pm_frame_timeout
= 0;
1900 cmd
->cmd
.tx
.driver_txop
= 0;
1901 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
1902 cmd
->cmd
.tx
.next_frame_len
= 0;
1904 static void iwl_update_tx_stats(struct iwl_priv
*priv
, u16 fc
, u16 len
)
1906 /* 0 - mgmt, 1 - cnt, 2 - data */
1907 int idx
= (fc
& IEEE80211_FCTL_FTYPE
) >> 2;
1908 priv
->tx_stats
[idx
].cnt
++;
1909 priv
->tx_stats
[idx
].bytes
+= len
;
1912 * iwl4965_get_sta_id - Find station's index within station table
1914 * If new IBSS station, create new entry in station table
1916 static int iwl4965_get_sta_id(struct iwl_priv
*priv
,
1917 struct ieee80211_hdr
*hdr
)
1920 u16 fc
= le16_to_cpu(hdr
->frame_control
);
1921 DECLARE_MAC_BUF(mac
);
1923 /* If this frame is broadcast or management, use broadcast station id */
1924 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
1925 is_multicast_ether_addr(hdr
->addr1
))
1926 return priv
->hw_params
.bcast_sta_id
;
1928 switch (priv
->iw_mode
) {
1930 /* If we are a client station in a BSS network, use the special
1931 * AP station entry (that's the only station we communicate with) */
1932 case IEEE80211_IF_TYPE_STA
:
1935 /* If we are an AP, then find the station, or use BCAST */
1936 case IEEE80211_IF_TYPE_AP
:
1937 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1938 if (sta_id
!= IWL_INVALID_STATION
)
1940 return priv
->hw_params
.bcast_sta_id
;
1942 /* If this frame is going out to an IBSS network, find the station,
1943 * or create a new station table entry */
1944 case IEEE80211_IF_TYPE_IBSS
:
1945 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1946 if (sta_id
!= IWL_INVALID_STATION
)
1949 /* Create new station table entry */
1950 sta_id
= iwl4965_add_station_flags(priv
, hdr
->addr1
,
1951 0, CMD_ASYNC
, NULL
);
1953 if (sta_id
!= IWL_INVALID_STATION
)
1956 IWL_DEBUG_DROP("Station %s not in station map. "
1957 "Defaulting to broadcast...\n",
1958 print_mac(mac
, hdr
->addr1
));
1959 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
1960 return priv
->hw_params
.bcast_sta_id
;
1963 IWL_WARNING("Unknown mode of operation: %d", priv
->iw_mode
);
1964 return priv
->hw_params
.bcast_sta_id
;
1969 * start REPLY_TX command process
1971 static int iwl4965_tx_skb(struct iwl_priv
*priv
,
1972 struct sk_buff
*skb
, struct ieee80211_tx_control
*ctl
)
1974 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
1975 struct iwl4965_tfd_frame
*tfd
;
1977 int txq_id
= ctl
->queue
;
1978 struct iwl4965_tx_queue
*txq
= NULL
;
1979 struct iwl4965_queue
*q
= NULL
;
1980 dma_addr_t phys_addr
;
1981 dma_addr_t txcmd_phys
;
1982 dma_addr_t scratch_phys
;
1983 struct iwl_cmd
*out_cmd
= NULL
;
1984 u16 len
, idx
, len_org
;
1985 u8 id
, hdr_len
, unicast
;
1990 u8 wait_write_ptr
= 0;
1991 unsigned long flags
;
1994 spin_lock_irqsave(&priv
->lock
, flags
);
1995 if (iwl_is_rfkill(priv
)) {
1996 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2001 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2005 if ((ctl
->tx_rate
->hw_value
& 0xFF) == IWL_INVALID_RATE
) {
2006 IWL_ERROR("ERROR: No TX rate available.\n");
2010 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
2013 fc
= le16_to_cpu(hdr
->frame_control
);
2015 #ifdef CONFIG_IWLWIFI_DEBUG
2016 if (ieee80211_is_auth(fc
))
2017 IWL_DEBUG_TX("Sending AUTH frame\n");
2018 else if (ieee80211_is_assoc_request(fc
))
2019 IWL_DEBUG_TX("Sending ASSOC frame\n");
2020 else if (ieee80211_is_reassoc_request(fc
))
2021 IWL_DEBUG_TX("Sending REASSOC frame\n");
2024 /* drop all data frame if we are not associated */
2025 if (((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_DATA
) &&
2026 (!iwl_is_associated(priv
) ||
2027 ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && !priv
->assoc_id
) ||
2028 !priv
->assoc_station_added
)) {
2029 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2033 spin_unlock_irqrestore(&priv
->lock
, flags
);
2035 hdr_len
= ieee80211_get_hdrlen(fc
);
2037 /* Find (or create) index into station table for destination station */
2038 sta_id
= iwl4965_get_sta_id(priv
, hdr
);
2039 if (sta_id
== IWL_INVALID_STATION
) {
2040 DECLARE_MAC_BUF(mac
);
2042 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2043 print_mac(mac
, hdr
->addr1
));
2047 IWL_DEBUG_RATE("station Id %d\n", sta_id
);
2049 qc
= ieee80211_get_qos_ctrl(hdr
);
2051 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2052 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
&
2054 hdr
->seq_ctrl
= cpu_to_le16(seq_number
) |
2056 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG
));
2058 #ifdef CONFIG_IWL4965_HT
2059 /* aggregation is on for this <sta,tid> */
2060 if (ctl
->flags
& IEEE80211_TXCTL_AMPDU
)
2061 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
2062 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
++;
2063 #endif /* CONFIG_IWL4965_HT */
2066 /* Descriptor for chosen Tx queue */
2067 txq
= &priv
->txq
[txq_id
];
2070 spin_lock_irqsave(&priv
->lock
, flags
);
2072 /* Set up first empty TFD within this queue's circular TFD buffer */
2073 tfd
= &txq
->bd
[q
->write_ptr
];
2074 memset(tfd
, 0, sizeof(*tfd
));
2075 control_flags
= (u32
*) tfd
;
2076 idx
= get_cmd_index(q
, q
->write_ptr
, 0);
2078 /* Set up driver data for this TFD */
2079 memset(&(txq
->txb
[q
->write_ptr
]), 0, sizeof(struct iwl4965_tx_info
));
2080 txq
->txb
[q
->write_ptr
].skb
[0] = skb
;
2081 memcpy(&(txq
->txb
[q
->write_ptr
].status
.control
),
2082 ctl
, sizeof(struct ieee80211_tx_control
));
2084 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2085 out_cmd
= &txq
->cmd
[idx
];
2086 memset(&out_cmd
->hdr
, 0, sizeof(out_cmd
->hdr
));
2087 memset(&out_cmd
->cmd
.tx
, 0, sizeof(out_cmd
->cmd
.tx
));
2090 * Set up the Tx-command (not MAC!) header.
2091 * Store the chosen Tx queue and TFD index within the sequence field;
2092 * after Tx, uCode's Tx response will return this value so driver can
2093 * locate the frame within the tx queue and do post-tx processing.
2095 out_cmd
->hdr
.cmd
= REPLY_TX
;
2096 out_cmd
->hdr
.sequence
= cpu_to_le16((u16
)(QUEUE_TO_SEQ(txq_id
) |
2097 INDEX_TO_SEQ(q
->write_ptr
)));
2099 /* Copy MAC header from skb into command buffer */
2100 memcpy(out_cmd
->cmd
.tx
.hdr
, hdr
, hdr_len
);
2103 * Use the first empty entry in this queue's command buffer array
2104 * to contain the Tx command and MAC header concatenated together
2105 * (payload data will be in another buffer).
2106 * Size of this varies, due to varying MAC header length.
2107 * If end is not dword aligned, we'll have 2 extra bytes at the end
2108 * of the MAC header (device reads on dword boundaries).
2109 * We'll tell device about this padding later.
2111 len
= priv
->hw_params
.tx_cmd_len
+
2112 sizeof(struct iwl_cmd_header
) + hdr_len
;
2115 len
= (len
+ 3) & ~3;
2122 /* Physical address of this Tx command's header (not MAC header!),
2123 * within command buffer array. */
2124 txcmd_phys
= txq
->dma_addr_cmd
+ sizeof(struct iwl_cmd
) * idx
+
2125 offsetof(struct iwl_cmd
, hdr
);
2127 /* Add buffer containing Tx command and MAC(!) header to TFD's
2129 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, txcmd_phys
, len
);
2131 if (!(ctl
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
))
2132 iwl4965_build_tx_cmd_hwcrypto(priv
, ctl
, out_cmd
, skb
, sta_id
);
2134 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2135 * if any (802.11 null frames have no payload). */
2136 len
= skb
->len
- hdr_len
;
2138 phys_addr
= pci_map_single(priv
->pci_dev
, skb
->data
+ hdr_len
,
2139 len
, PCI_DMA_TODEVICE
);
2140 iwl4965_hw_txq_attach_buf_to_tfd(priv
, tfd
, phys_addr
, len
);
2143 /* Tell 4965 about any 2-byte padding after MAC header */
2145 out_cmd
->cmd
.tx
.tx_flags
|= TX_CMD_FLG_MH_PAD_MSK
;
2147 /* Total # bytes to be transmitted */
2148 len
= (u16
)skb
->len
;
2149 out_cmd
->cmd
.tx
.len
= cpu_to_le16(len
);
2151 /* TODO need this for burst mode later on */
2152 iwl4965_build_tx_cmd_basic(priv
, out_cmd
, ctl
, hdr
, unicast
, sta_id
);
2154 /* set is_hcca to 0; it probably will never be implemented */
2155 iwl4965_hw_build_tx_cmd_rate(priv
, out_cmd
, ctl
, hdr
, sta_id
, 0);
2157 iwl_update_tx_stats(priv
, fc
, len
);
2159 scratch_phys
= txcmd_phys
+ sizeof(struct iwl_cmd_header
) +
2160 offsetof(struct iwl4965_tx_cmd
, scratch
);
2161 out_cmd
->cmd
.tx
.dram_lsb_ptr
= cpu_to_le32(scratch_phys
);
2162 out_cmd
->cmd
.tx
.dram_msb_ptr
= iwl_get_dma_hi_address(scratch_phys
);
2164 if (!ieee80211_get_morefrag(hdr
)) {
2165 txq
->need_update
= 1;
2167 u8 tid
= (u8
)(le16_to_cpu(*qc
) & 0xf);
2168 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
2172 txq
->need_update
= 0;
2175 iwl_print_hex_dump(IWL_DL_TX
, out_cmd
->cmd
.payload
,
2176 sizeof(out_cmd
->cmd
.tx
));
2178 iwl_print_hex_dump(IWL_DL_TX
, (u8
*)out_cmd
->cmd
.tx
.hdr
,
2179 ieee80211_get_hdrlen(fc
));
2181 /* Set up entry for this TFD in Tx byte-count array */
2182 priv
->cfg
->ops
->lib
->txq_update_byte_cnt_tbl(priv
, txq
, len
);
2184 /* Tell device the write index *just past* this latest filled TFD */
2185 q
->write_ptr
= iwl_queue_inc_wrap(q
->write_ptr
, q
->n_bd
);
2186 rc
= iwl4965_tx_queue_update_write_ptr(priv
, txq
);
2187 spin_unlock_irqrestore(&priv
->lock
, flags
);
2192 if ((iwl4965_queue_space(q
) < q
->high_mark
)
2193 && priv
->mac80211_registered
) {
2194 if (wait_write_ptr
) {
2195 spin_lock_irqsave(&priv
->lock
, flags
);
2196 txq
->need_update
= 1;
2197 iwl4965_tx_queue_update_write_ptr(priv
, txq
);
2198 spin_unlock_irqrestore(&priv
->lock
, flags
);
2201 ieee80211_stop_queue(priv
->hw
, ctl
->queue
);
2207 spin_unlock_irqrestore(&priv
->lock
, flags
);
2212 static void iwl4965_set_rate(struct iwl_priv
*priv
)
2214 const struct ieee80211_supported_band
*hw
= NULL
;
2215 struct ieee80211_rate
*rate
;
2218 hw
= iwl_get_hw_mode(priv
, priv
->band
);
2220 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2224 priv
->active_rate
= 0;
2225 priv
->active_rate_basic
= 0;
2227 for (i
= 0; i
< hw
->n_bitrates
; i
++) {
2228 rate
= &(hw
->bitrates
[i
]);
2229 if (rate
->hw_value
< IWL_RATE_COUNT
)
2230 priv
->active_rate
|= (1 << rate
->hw_value
);
2233 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2234 priv
->active_rate
, priv
->active_rate_basic
);
2237 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2238 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2241 if (priv
->active_rate_basic
& IWL_CCK_BASIC_RATES_MASK
)
2242 priv
->staging_rxon
.cck_basic_rates
=
2243 ((priv
->active_rate_basic
&
2244 IWL_CCK_RATES_MASK
) >> IWL_FIRST_CCK_RATE
) & 0xF;
2246 priv
->staging_rxon
.cck_basic_rates
=
2247 (IWL_CCK_BASIC_RATES_MASK
>> IWL_FIRST_CCK_RATE
) & 0xF;
2249 if (priv
->active_rate_basic
& IWL_OFDM_BASIC_RATES_MASK
)
2250 priv
->staging_rxon
.ofdm_basic_rates
=
2251 ((priv
->active_rate_basic
&
2252 (IWL_OFDM_BASIC_RATES_MASK
| IWL_RATE_6M_MASK
)) >>
2253 IWL_FIRST_OFDM_RATE
) & 0xFF;
2255 priv
->staging_rxon
.ofdm_basic_rates
=
2256 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2259 void iwl4965_radio_kill_sw(struct iwl_priv
*priv
, int disable_radio
)
2261 unsigned long flags
;
2263 if (!!disable_radio
== test_bit(STATUS_RF_KILL_SW
, &priv
->status
))
2266 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2267 disable_radio
? "OFF" : "ON");
2269 if (disable_radio
) {
2270 iwl4965_scan_cancel(priv
);
2271 /* FIXME: This is a workaround for AP */
2272 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
2273 spin_lock_irqsave(&priv
->lock
, flags
);
2274 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
2275 CSR_UCODE_SW_BIT_RFKILL
);
2276 spin_unlock_irqrestore(&priv
->lock
, flags
);
2277 /* call the host command only if no hw rf-kill set */
2278 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
) &&
2280 iwl4965_send_card_state(priv
,
2281 CARD_STATE_CMD_DISABLE
,
2283 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
2285 /* make sure mac80211 stop sending Tx frame */
2286 if (priv
->mac80211_registered
)
2287 ieee80211_stop_queues(priv
->hw
);
2292 spin_lock_irqsave(&priv
->lock
, flags
);
2293 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2295 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
2296 spin_unlock_irqrestore(&priv
->lock
, flags
);
2301 spin_lock_irqsave(&priv
->lock
, flags
);
2302 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
2303 if (!iwl_grab_nic_access(priv
))
2304 iwl_release_nic_access(priv
);
2305 spin_unlock_irqrestore(&priv
->lock
, flags
);
2307 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
2308 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2309 "disabled by HW switch\n");
2313 queue_work(priv
->workqueue
, &priv
->restart
);
2317 #define IWL_PACKET_RETRY_TIME HZ
2319 int iwl4965_is_duplicate_packet(struct iwl_priv
*priv
, struct ieee80211_hdr
*header
)
2321 u16 sc
= le16_to_cpu(header
->seq_ctrl
);
2322 u16 seq
= (sc
& IEEE80211_SCTL_SEQ
) >> 4;
2323 u16 frag
= sc
& IEEE80211_SCTL_FRAG
;
2324 u16
*last_seq
, *last_frag
;
2325 unsigned long *last_time
;
2327 switch (priv
->iw_mode
) {
2328 case IEEE80211_IF_TYPE_IBSS
:{
2329 struct list_head
*p
;
2330 struct iwl4965_ibss_seq
*entry
= NULL
;
2331 u8
*mac
= header
->addr2
;
2332 int index
= mac
[5] & (IWL_IBSS_MAC_HASH_SIZE
- 1);
2334 __list_for_each(p
, &priv
->ibss_mac_hash
[index
]) {
2335 entry
= list_entry(p
, struct iwl4965_ibss_seq
, list
);
2336 if (!compare_ether_addr(entry
->mac
, mac
))
2339 if (p
== &priv
->ibss_mac_hash
[index
]) {
2340 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
2342 IWL_ERROR("Cannot malloc new mac entry\n");
2345 memcpy(entry
->mac
, mac
, ETH_ALEN
);
2346 entry
->seq_num
= seq
;
2347 entry
->frag_num
= frag
;
2348 entry
->packet_time
= jiffies
;
2349 list_add(&entry
->list
, &priv
->ibss_mac_hash
[index
]);
2352 last_seq
= &entry
->seq_num
;
2353 last_frag
= &entry
->frag_num
;
2354 last_time
= &entry
->packet_time
;
2357 case IEEE80211_IF_TYPE_STA
:
2358 last_seq
= &priv
->last_seq_num
;
2359 last_frag
= &priv
->last_frag_num
;
2360 last_time
= &priv
->last_packet_time
;
2365 if ((*last_seq
== seq
) &&
2366 time_after(*last_time
+ IWL_PACKET_RETRY_TIME
, jiffies
)) {
2367 if (*last_frag
== frag
)
2369 if (*last_frag
+ 1 != frag
)
2370 /* out-of-order fragment */
2376 *last_time
= jiffies
;
2383 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2385 #include "iwl-spectrum.h"
2387 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2388 #define BEACON_TIME_MASK_HIGH 0xFF000000
2389 #define TIME_UNIT 1024
2392 * extended beacon time format
2393 * time in usec will be changed into a 32-bit value in 8:24 format
2394 * the high 1 byte is the beacon counts
2395 * the lower 3 bytes is the time in usec within one beacon interval
2398 static u32
iwl4965_usecs_to_beacons(u32 usec
, u32 beacon_interval
)
2402 u32 interval
= beacon_interval
* 1024;
2404 if (!interval
|| !usec
)
2407 quot
= (usec
/ interval
) & (BEACON_TIME_MASK_HIGH
>> 24);
2408 rem
= (usec
% interval
) & BEACON_TIME_MASK_LOW
;
2410 return (quot
<< 24) + rem
;
2413 /* base is usually what we get from ucode with each received frame,
2414 * the same as HW timer counter counting down
2417 static __le32
iwl4965_add_beacon_time(u32 base
, u32 addon
, u32 beacon_interval
)
2419 u32 base_low
= base
& BEACON_TIME_MASK_LOW
;
2420 u32 addon_low
= addon
& BEACON_TIME_MASK_LOW
;
2421 u32 interval
= beacon_interval
* TIME_UNIT
;
2422 u32 res
= (base
& BEACON_TIME_MASK_HIGH
) +
2423 (addon
& BEACON_TIME_MASK_HIGH
);
2425 if (base_low
> addon_low
)
2426 res
+= base_low
- addon_low
;
2427 else if (base_low
< addon_low
) {
2428 res
+= interval
+ base_low
- addon_low
;
2433 return cpu_to_le32(res
);
2436 static int iwl4965_get_measurement(struct iwl_priv
*priv
,
2437 struct ieee80211_measurement_params
*params
,
2440 struct iwl4965_spectrum_cmd spectrum
;
2441 struct iwl4965_rx_packet
*res
;
2442 struct iwl_host_cmd cmd
= {
2443 .id
= REPLY_SPECTRUM_MEASUREMENT_CMD
,
2444 .data
= (void *)&spectrum
,
2445 .meta
.flags
= CMD_WANT_SKB
,
2447 u32 add_time
= le64_to_cpu(params
->start_time
);
2449 int spectrum_resp_status
;
2450 int duration
= le16_to_cpu(params
->duration
);
2452 if (iwl_is_associated(priv
))
2454 iwl4965_usecs_to_beacons(
2455 le64_to_cpu(params
->start_time
) - priv
->last_tsf
,
2456 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2458 memset(&spectrum
, 0, sizeof(spectrum
));
2460 spectrum
.channel_count
= cpu_to_le16(1);
2462 RXON_FLG_TSF2HOST_MSK
| RXON_FLG_ANT_A_MSK
| RXON_FLG_DIS_DIV_MSK
;
2463 spectrum
.filter_flags
= MEASUREMENT_FILTER_FLAG
;
2464 cmd
.len
= sizeof(spectrum
);
2465 spectrum
.len
= cpu_to_le16(cmd
.len
- sizeof(spectrum
.len
));
2467 if (iwl_is_associated(priv
))
2468 spectrum
.start_time
=
2469 iwl4965_add_beacon_time(priv
->last_beacon_time
,
2471 le16_to_cpu(priv
->rxon_timing
.beacon_interval
));
2473 spectrum
.start_time
= 0;
2475 spectrum
.channels
[0].duration
= cpu_to_le32(duration
* TIME_UNIT
);
2476 spectrum
.channels
[0].channel
= params
->channel
;
2477 spectrum
.channels
[0].type
= type
;
2478 if (priv
->active_rxon
.flags
& RXON_FLG_BAND_24G_MSK
)
2479 spectrum
.flags
|= RXON_FLG_BAND_24G_MSK
|
2480 RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_TGG_PROTECT_MSK
;
2482 rc
= iwl_send_cmd_sync(priv
, &cmd
);
2486 res
= (struct iwl4965_rx_packet
*)cmd
.meta
.u
.skb
->data
;
2487 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
2488 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2492 spectrum_resp_status
= le16_to_cpu(res
->u
.spectrum
.status
);
2493 switch (spectrum_resp_status
) {
2494 case 0: /* Command will be handled */
2495 if (res
->u
.spectrum
.id
!= 0xff) {
2497 ("Replaced existing measurement: %d\n",
2498 res
->u
.spectrum
.id
);
2499 priv
->measurement_status
&= ~MEASUREMENT_READY
;
2501 priv
->measurement_status
|= MEASUREMENT_ACTIVE
;
2505 case 1: /* Command will not be handled */
2510 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
2516 static void iwl4965_txstatus_to_ieee(struct iwl_priv
*priv
,
2517 struct iwl4965_tx_info
*tx_sta
)
2520 tx_sta
->status
.ack_signal
= 0;
2521 tx_sta
->status
.excessive_retries
= 0;
2522 tx_sta
->status
.queue_length
= 0;
2523 tx_sta
->status
.queue_number
= 0;
2526 ieee80211_tx_status_irqsafe(priv
->hw
,
2527 tx_sta
->skb
[0], &(tx_sta
->status
));
2529 ieee80211_tx_status(priv
->hw
,
2530 tx_sta
->skb
[0], &(tx_sta
->status
));
2532 tx_sta
->skb
[0] = NULL
;
2536 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2538 * When FW advances 'R' index, all entries between old and new 'R' index
2539 * need to be reclaimed. As result, some free space forms. If there is
2540 * enough free space (> low mark), wake the stack that feeds us.
2542 int iwl4965_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
2544 struct iwl4965_tx_queue
*txq
= &priv
->txq
[txq_id
];
2545 struct iwl4965_queue
*q
= &txq
->q
;
2548 if ((index
>= q
->n_bd
) || (x2_queue_used(q
, index
) == 0)) {
2549 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2550 "is out of range [0-%d] %d %d.\n", txq_id
,
2551 index
, q
->n_bd
, q
->write_ptr
, q
->read_ptr
);
2555 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
2556 q
->read_ptr
!= index
;
2557 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
2558 if (txq_id
!= IWL_CMD_QUEUE_NUM
) {
2559 iwl4965_txstatus_to_ieee(priv
,
2560 &(txq
->txb
[txq
->q
.read_ptr
]));
2561 iwl4965_hw_txq_free_tfd(priv
, txq
);
2562 } else if (nfreed
> 1) {
2563 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index
,
2564 q
->write_ptr
, q
->read_ptr
);
2565 queue_work(priv
->workqueue
, &priv
->restart
);
2570 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2571 (txq_id != IWL_CMD_QUEUE_NUM) &&
2572 priv->mac80211_registered)
2573 ieee80211_wake_queue(priv->hw, txq_id); */
2579 static int iwl4965_is_tx_success(u32 status
)
2581 status
&= TX_STATUS_MSK
;
2582 return (status
== TX_STATUS_SUCCESS
)
2583 || (status
== TX_STATUS_DIRECT_DONE
);
2586 /******************************************************************************
2588 * Generic RX handler implementations
2590 ******************************************************************************/
2591 #ifdef CONFIG_IWL4965_HT
2593 static inline int iwl4965_get_ra_sta_id(struct iwl_priv
*priv
,
2594 struct ieee80211_hdr
*hdr
)
2596 if (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)
2599 u8
*da
= ieee80211_get_DA(hdr
);
2600 return iwl_find_station(priv
, da
);
2604 static struct ieee80211_hdr
*iwl4965_tx_queue_get_hdr(
2605 struct iwl_priv
*priv
, int txq_id
, int idx
)
2607 if (priv
->txq
[txq_id
].txb
[idx
].skb
[0])
2608 return (struct ieee80211_hdr
*)priv
->txq
[txq_id
].
2609 txb
[idx
].skb
[0]->data
;
2613 static inline u32
iwl4965_get_scd_ssn(struct iwl4965_tx_resp
*tx_resp
)
2615 __le32
*scd_ssn
= (__le32
*)((u32
*)&tx_resp
->status
+
2616 tx_resp
->frame_count
);
2617 return le32_to_cpu(*scd_ssn
) & MAX_SN
;
2622 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2624 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
2625 struct iwl4965_ht_agg
*agg
,
2626 struct iwl4965_tx_resp_agg
*tx_resp
,
2630 struct agg_tx_status
*frame_status
= &tx_resp
->status
;
2631 struct ieee80211_tx_status
*tx_status
= NULL
;
2632 struct ieee80211_hdr
*hdr
= NULL
;
2637 if (agg
->wait_for_ba
)
2638 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2640 agg
->frame_count
= tx_resp
->frame_count
;
2641 agg
->start_idx
= start_idx
;
2642 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
2645 /* # frames attempted by Tx command */
2646 if (agg
->frame_count
== 1) {
2647 /* Only one frame was attempted; no block-ack will arrive */
2648 status
= le16_to_cpu(frame_status
[0].status
);
2649 seq
= le16_to_cpu(frame_status
[0].sequence
);
2650 idx
= SEQ_TO_INDEX(seq
);
2651 txq_id
= SEQ_TO_QUEUE(seq
);
2653 /* FIXME: code repetition */
2654 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2655 agg
->frame_count
, agg
->start_idx
, idx
);
2657 tx_status
= &(priv
->txq
[txq_id
].txb
[idx
].status
);
2658 tx_status
->retry_count
= tx_resp
->failure_frame
;
2659 tx_status
->queue_number
= status
& 0xff;
2660 tx_status
->queue_length
= tx_resp
->failure_rts
;
2661 tx_status
->control
.flags
&= ~IEEE80211_TXCTL_AMPDU
;
2662 tx_status
->flags
= iwl4965_is_tx_success(status
)?
2663 IEEE80211_TX_STATUS_ACK
: 0;
2664 iwl4965_hwrate_to_tx_control(priv
,
2665 le32_to_cpu(tx_resp
->rate_n_flags
),
2666 &tx_status
->control
);
2667 /* FIXME: code repetition end */
2669 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2670 status
& 0xff, tx_resp
->failure_frame
);
2671 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2672 iwl4965_hw_get_rate_n_flags(tx_resp
->rate_n_flags
));
2674 agg
->wait_for_ba
= 0;
2676 /* Two or more frames were attempted; expect block-ack */
2678 int start
= agg
->start_idx
;
2680 /* Construct bit-map of pending frames within Tx window */
2681 for (i
= 0; i
< agg
->frame_count
; i
++) {
2683 status
= le16_to_cpu(frame_status
[i
].status
);
2684 seq
= le16_to_cpu(frame_status
[i
].sequence
);
2685 idx
= SEQ_TO_INDEX(seq
);
2686 txq_id
= SEQ_TO_QUEUE(seq
);
2688 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
2689 AGG_TX_STATE_ABORT_MSK
))
2692 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2693 agg
->frame_count
, txq_id
, idx
);
2695 hdr
= iwl4965_tx_queue_get_hdr(priv
, txq_id
, idx
);
2697 sc
= le16_to_cpu(hdr
->seq_ctrl
);
2698 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
2699 IWL_ERROR("BUG_ON idx doesn't match seq control"
2700 " idx=%d, seq_idx=%d, seq=%d\n",
2706 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2707 i
, idx
, SEQ_TO_SN(sc
));
2711 sh
= (start
- idx
) + 0xff;
2712 bitmap
= bitmap
<< sh
;
2715 } else if (sh
< -64)
2716 sh
= 0xff - (start
- idx
);
2720 bitmap
= bitmap
<< sh
;
2723 bitmap
|= (1 << sh
);
2724 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2725 start
, (u32
)(bitmap
& 0xFFFFFFFF));
2728 agg
->bitmap
= bitmap
;
2729 agg
->start_idx
= start
;
2730 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
2731 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2732 agg
->frame_count
, agg
->start_idx
,
2733 (unsigned long long)agg
->bitmap
);
2736 agg
->wait_for_ba
= 1;
2743 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2745 static void iwl4965_rx_reply_tx(struct iwl_priv
*priv
,
2746 struct iwl4965_rx_mem_buffer
*rxb
)
2748 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2749 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
2750 int txq_id
= SEQ_TO_QUEUE(sequence
);
2751 int index
= SEQ_TO_INDEX(sequence
);
2752 struct iwl4965_tx_queue
*txq
= &priv
->txq
[txq_id
];
2753 struct ieee80211_tx_status
*tx_status
;
2754 struct iwl4965_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
2755 u32 status
= le32_to_cpu(tx_resp
->status
);
2756 #ifdef CONFIG_IWL4965_HT
2757 int tid
= MAX_TID_COUNT
, sta_id
= IWL_INVALID_STATION
;
2758 struct ieee80211_hdr
*hdr
;
2762 if ((index
>= txq
->q
.n_bd
) || (x2_queue_used(&txq
->q
, index
) == 0)) {
2763 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
2764 "is out of range [0-%d] %d %d\n", txq_id
,
2765 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
2770 #ifdef CONFIG_IWL4965_HT
2771 hdr
= iwl4965_tx_queue_get_hdr(priv
, txq_id
, index
);
2772 qc
= ieee80211_get_qos_ctrl(hdr
);
2775 tid
= le16_to_cpu(*qc
) & 0xf;
2777 sta_id
= iwl4965_get_ra_sta_id(priv
, hdr
);
2778 if (txq
->sched_retry
&& unlikely(sta_id
== IWL_INVALID_STATION
)) {
2779 IWL_ERROR("Station not known\n");
2783 if (txq
->sched_retry
) {
2784 const u32 scd_ssn
= iwl4965_get_scd_ssn(tx_resp
);
2785 struct iwl4965_ht_agg
*agg
= NULL
;
2790 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
2792 iwl4965_tx_status_reply_tx(priv
, agg
,
2793 (struct iwl4965_tx_resp_agg
*)tx_resp
, index
);
2795 if ((tx_resp
->frame_count
== 1) &&
2796 !iwl4965_is_tx_success(status
)) {
2797 /* TODO: send BAR */
2800 if (txq
->q
.read_ptr
!= (scd_ssn
& 0xff)) {
2802 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
2803 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
2804 "%d index %d\n", scd_ssn
, index
);
2805 freed
= iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
2806 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
2808 if (iwl4965_queue_space(&txq
->q
) > txq
->q
.low_mark
&&
2809 txq_id
>= 0 && priv
->mac80211_registered
&&
2810 agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
)
2811 ieee80211_wake_queue(priv
->hw
, txq_id
);
2813 iwl4965_check_empty_hw_queue(priv
, sta_id
, tid
, txq_id
);
2816 #endif /* CONFIG_IWL4965_HT */
2817 tx_status
= &(txq
->txb
[txq
->q
.read_ptr
].status
);
2819 tx_status
->retry_count
= tx_resp
->failure_frame
;
2820 tx_status
->queue_number
= status
;
2821 tx_status
->queue_length
= tx_resp
->bt_kill_count
;
2822 tx_status
->queue_length
|= tx_resp
->failure_rts
;
2824 iwl4965_is_tx_success(status
) ? IEEE80211_TX_STATUS_ACK
: 0;
2825 iwl4965_hwrate_to_tx_control(priv
, le32_to_cpu(tx_resp
->rate_n_flags
),
2826 &tx_status
->control
);
2828 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
2829 "retries %d\n", txq_id
, iwl4965_get_tx_fail_reason(status
),
2830 status
, le32_to_cpu(tx_resp
->rate_n_flags
),
2831 tx_resp
->failure_frame
);
2833 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index
);
2835 int freed
= iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
2836 #ifdef CONFIG_IWL4965_HT
2837 if (tid
!= MAX_TID_COUNT
)
2838 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
2839 if (iwl4965_queue_space(&txq
->q
) > txq
->q
.low_mark
&&
2841 priv
->mac80211_registered
)
2842 ieee80211_wake_queue(priv
->hw
, txq_id
);
2843 if (tid
!= MAX_TID_COUNT
)
2844 iwl4965_check_empty_hw_queue(priv
, sta_id
, tid
, txq_id
);
2847 #ifdef CONFIG_IWL4965_HT
2849 #endif /* CONFIG_IWL4965_HT */
2851 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
2852 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
2856 static void iwl4965_rx_reply_alive(struct iwl_priv
*priv
,
2857 struct iwl4965_rx_mem_buffer
*rxb
)
2859 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2860 struct iwl4965_alive_resp
*palive
;
2861 struct delayed_work
*pwork
;
2863 palive
= &pkt
->u
.alive_frame
;
2865 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2867 palive
->is_valid
, palive
->ver_type
,
2868 palive
->ver_subtype
);
2870 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
2871 IWL_DEBUG_INFO("Initialization Alive received.\n");
2872 memcpy(&priv
->card_alive_init
,
2873 &pkt
->u
.alive_frame
,
2874 sizeof(struct iwl4965_init_alive_resp
));
2875 pwork
= &priv
->init_alive_start
;
2877 IWL_DEBUG_INFO("Runtime Alive received.\n");
2878 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
2879 sizeof(struct iwl4965_alive_resp
));
2880 pwork
= &priv
->alive_start
;
2883 /* We delay the ALIVE response by 5ms to
2884 * give the HW RF Kill time to activate... */
2885 if (palive
->is_valid
== UCODE_VALID_OK
)
2886 queue_delayed_work(priv
->workqueue
, pwork
,
2887 msecs_to_jiffies(5));
2889 IWL_WARNING("uCode did not respond OK.\n");
2892 static void iwl4965_rx_reply_add_sta(struct iwl_priv
*priv
,
2893 struct iwl4965_rx_mem_buffer
*rxb
)
2895 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2897 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt
->u
.status
);
2901 static void iwl4965_rx_reply_error(struct iwl_priv
*priv
,
2902 struct iwl4965_rx_mem_buffer
*rxb
)
2904 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2906 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2907 "seq 0x%04X ser 0x%08X\n",
2908 le32_to_cpu(pkt
->u
.err_resp
.error_type
),
2909 get_cmd_string(pkt
->u
.err_resp
.cmd_id
),
2910 pkt
->u
.err_resp
.cmd_id
,
2911 le16_to_cpu(pkt
->u
.err_resp
.bad_cmd_seq_num
),
2912 le32_to_cpu(pkt
->u
.err_resp
.error_info
));
2915 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2917 static void iwl4965_rx_csa(struct iwl_priv
*priv
, struct iwl4965_rx_mem_buffer
*rxb
)
2919 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2920 struct iwl4965_rxon_cmd
*rxon
= (void *)&priv
->active_rxon
;
2921 struct iwl4965_csa_notification
*csa
= &(pkt
->u
.csa_notif
);
2922 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2923 le16_to_cpu(csa
->channel
), le32_to_cpu(csa
->status
));
2924 rxon
->channel
= csa
->channel
;
2925 priv
->staging_rxon
.channel
= csa
->channel
;
2928 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
2929 struct iwl4965_rx_mem_buffer
*rxb
)
2931 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2932 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2933 struct iwl4965_spectrum_notification
*report
= &(pkt
->u
.spectrum_notif
);
2935 if (!report
->state
) {
2936 IWL_DEBUG(IWL_DL_11H
| IWL_DL_INFO
,
2937 "Spectrum Measure Notification: Start\n");
2941 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
2942 priv
->measurement_status
|= MEASUREMENT_READY
;
2946 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv
*priv
,
2947 struct iwl4965_rx_mem_buffer
*rxb
)
2949 #ifdef CONFIG_IWLWIFI_DEBUG
2950 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2951 struct iwl4965_sleep_notification
*sleep
= &(pkt
->u
.sleep_notif
);
2952 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2953 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
2957 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
2958 struct iwl4965_rx_mem_buffer
*rxb
)
2960 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2961 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2962 "notification for %s:\n",
2963 le32_to_cpu(pkt
->len
), get_cmd_string(pkt
->hdr
.cmd
));
2964 iwl_print_hex_dump(IWL_DL_RADIO
, pkt
->u
.raw
, le32_to_cpu(pkt
->len
));
2967 static void iwl4965_bg_beacon_update(struct work_struct
*work
)
2969 struct iwl_priv
*priv
=
2970 container_of(work
, struct iwl_priv
, beacon_update
);
2971 struct sk_buff
*beacon
;
2973 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2974 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
, NULL
);
2977 IWL_ERROR("update beacon failed\n");
2981 mutex_lock(&priv
->mutex
);
2982 /* new beacon skb is allocated every time; dispose previous.*/
2983 if (priv
->ibss_beacon
)
2984 dev_kfree_skb(priv
->ibss_beacon
);
2986 priv
->ibss_beacon
= beacon
;
2987 mutex_unlock(&priv
->mutex
);
2989 iwl4965_send_beacon_cmd(priv
);
2992 static void iwl4965_rx_beacon_notif(struct iwl_priv
*priv
,
2993 struct iwl4965_rx_mem_buffer
*rxb
)
2995 #ifdef CONFIG_IWLWIFI_DEBUG
2996 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
2997 struct iwl4965_beacon_notif
*beacon
= &(pkt
->u
.beacon_status
);
2998 u8 rate
= iwl4965_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
3000 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3001 "tsf %d %d rate %d\n",
3002 le32_to_cpu(beacon
->beacon_notify_hdr
.status
) & TX_STATUS_MSK
,
3003 beacon
->beacon_notify_hdr
.failure_frame
,
3004 le32_to_cpu(beacon
->ibss_mgr_status
),
3005 le32_to_cpu(beacon
->high_tsf
),
3006 le32_to_cpu(beacon
->low_tsf
), rate
);
3009 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
3010 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
3011 queue_work(priv
->workqueue
, &priv
->beacon_update
);
3014 /* Service response to REPLY_SCAN_CMD (0x80) */
3015 static void iwl4965_rx_reply_scan(struct iwl_priv
*priv
,
3016 struct iwl4965_rx_mem_buffer
*rxb
)
3018 #ifdef CONFIG_IWLWIFI_DEBUG
3019 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3020 struct iwl4965_scanreq_notification
*notif
=
3021 (struct iwl4965_scanreq_notification
*)pkt
->u
.raw
;
3023 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif
->status
);
3027 /* Service SCAN_START_NOTIFICATION (0x82) */
3028 static void iwl4965_rx_scan_start_notif(struct iwl_priv
*priv
,
3029 struct iwl4965_rx_mem_buffer
*rxb
)
3031 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3032 struct iwl4965_scanstart_notification
*notif
=
3033 (struct iwl4965_scanstart_notification
*)pkt
->u
.raw
;
3034 priv
->scan_start_tsf
= le32_to_cpu(notif
->tsf_low
);
3035 IWL_DEBUG_SCAN("Scan start: "
3037 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3039 notif
->band
? "bg" : "a",
3041 notif
->tsf_low
, notif
->status
, notif
->beacon_timer
);
3044 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3045 static void iwl4965_rx_scan_results_notif(struct iwl_priv
*priv
,
3046 struct iwl4965_rx_mem_buffer
*rxb
)
3048 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3049 struct iwl4965_scanresults_notification
*notif
=
3050 (struct iwl4965_scanresults_notification
*)pkt
->u
.raw
;
3052 IWL_DEBUG_SCAN("Scan ch.res: "
3054 "(TSF: 0x%08X:%08X) - %d "
3055 "elapsed=%lu usec (%dms since last)\n",
3057 notif
->band
? "bg" : "a",
3058 le32_to_cpu(notif
->tsf_high
),
3059 le32_to_cpu(notif
->tsf_low
),
3060 le32_to_cpu(notif
->statistics
[0]),
3061 le32_to_cpu(notif
->tsf_low
) - priv
->scan_start_tsf
,
3062 jiffies_to_msecs(elapsed_jiffies
3063 (priv
->last_scan_jiffies
, jiffies
)));
3065 priv
->last_scan_jiffies
= jiffies
;
3066 priv
->next_scan_jiffies
= 0;
3069 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3070 static void iwl4965_rx_scan_complete_notif(struct iwl_priv
*priv
,
3071 struct iwl4965_rx_mem_buffer
*rxb
)
3073 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3074 struct iwl4965_scancomplete_notification
*scan_notif
= (void *)pkt
->u
.raw
;
3076 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3077 scan_notif
->scanned_channels
,
3078 scan_notif
->tsf_low
,
3079 scan_notif
->tsf_high
, scan_notif
->status
);
3081 /* The HW is no longer scanning */
3082 clear_bit(STATUS_SCAN_HW
, &priv
->status
);
3084 /* The scan completion notification came in, so kill that timer... */
3085 cancel_delayed_work(&priv
->scan_check
);
3087 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3088 (priv
->scan_bands
== 2) ? "2.4" : "5.2",
3089 jiffies_to_msecs(elapsed_jiffies
3090 (priv
->scan_pass_start
, jiffies
)));
3092 /* Remove this scanned band from the list
3093 * of pending bands to scan */
3096 /* If a request to abort was given, or the scan did not succeed
3097 * then we reset the scan state machine and terminate,
3098 * re-queuing another scan if one has been requested */
3099 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
3100 IWL_DEBUG_INFO("Aborted scan completed.\n");
3101 clear_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
3103 /* If there are more bands on this scan pass reschedule */
3104 if (priv
->scan_bands
> 0)
3108 priv
->last_scan_jiffies
= jiffies
;
3109 priv
->next_scan_jiffies
= 0;
3110 IWL_DEBUG_INFO("Setting scan to off\n");
3112 clear_bit(STATUS_SCANNING
, &priv
->status
);
3114 IWL_DEBUG_INFO("Scan took %dms\n",
3115 jiffies_to_msecs(elapsed_jiffies(priv
->scan_start
, jiffies
)));
3117 queue_work(priv
->workqueue
, &priv
->scan_completed
);
3122 priv
->scan_pass_start
= jiffies
;
3123 queue_work(priv
->workqueue
, &priv
->request_scan
);
3126 /* Handle notification from uCode that card's power state is changing
3127 * due to software, hardware, or critical temperature RFKILL */
3128 static void iwl4965_rx_card_state_notif(struct iwl_priv
*priv
,
3129 struct iwl4965_rx_mem_buffer
*rxb
)
3131 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3132 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
3133 unsigned long status
= priv
->status
;
3135 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3136 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
3137 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
3139 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
3140 RF_CARD_DISABLED
)) {
3142 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3143 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
3145 if (!iwl_grab_nic_access(priv
)) {
3147 priv
, HBUS_TARG_MBX_C
,
3148 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
3150 iwl_release_nic_access(priv
);
3153 if (!(flags
& RXON_CARD_DISABLED
)) {
3154 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
3155 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
3156 if (!iwl_grab_nic_access(priv
)) {
3158 priv
, HBUS_TARG_MBX_C
,
3159 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
3161 iwl_release_nic_access(priv
);
3165 if (flags
& RF_CARD_DISABLED
) {
3166 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
3167 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
3168 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3169 if (!iwl_grab_nic_access(priv
))
3170 iwl_release_nic_access(priv
);
3174 if (flags
& HW_CARD_DISABLED
)
3175 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3177 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3180 if (flags
& SW_CARD_DISABLED
)
3181 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3183 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3185 if (!(flags
& RXON_CARD_DISABLED
))
3186 iwl4965_scan_cancel(priv
);
3188 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
3189 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
3190 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
3191 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
3192 queue_work(priv
->workqueue
, &priv
->rf_kill
);
3194 wake_up_interruptible(&priv
->wait_command_queue
);
3198 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3200 * Setup the RX handlers for each of the reply types sent from the uCode
3203 * This function chains into the hardware specific files for them to setup
3204 * any hardware specific handlers as well.
3206 static void iwl4965_setup_rx_handlers(struct iwl_priv
*priv
)
3208 priv
->rx_handlers
[REPLY_ALIVE
] = iwl4965_rx_reply_alive
;
3209 priv
->rx_handlers
[REPLY_ADD_STA
] = iwl4965_rx_reply_add_sta
;
3210 priv
->rx_handlers
[REPLY_ERROR
] = iwl4965_rx_reply_error
;
3211 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl4965_rx_csa
;
3212 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
3213 iwl4965_rx_spectrum_measure_notif
;
3214 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl4965_rx_pm_sleep_notif
;
3215 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
3216 iwl4965_rx_pm_debug_statistics_notif
;
3217 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl4965_rx_beacon_notif
;
3220 * The same handler is used for both the REPLY to a discrete
3221 * statistics request from the host as well as for the periodic
3222 * statistics notifications (after received beacons) from the uCode.
3224 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl4965_hw_rx_statistics
;
3225 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl4965_hw_rx_statistics
;
3227 priv
->rx_handlers
[REPLY_SCAN_CMD
] = iwl4965_rx_reply_scan
;
3228 priv
->rx_handlers
[SCAN_START_NOTIFICATION
] = iwl4965_rx_scan_start_notif
;
3229 priv
->rx_handlers
[SCAN_RESULTS_NOTIFICATION
] =
3230 iwl4965_rx_scan_results_notif
;
3231 priv
->rx_handlers
[SCAN_COMPLETE_NOTIFICATION
] =
3232 iwl4965_rx_scan_complete_notif
;
3233 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl4965_rx_card_state_notif
;
3234 priv
->rx_handlers
[REPLY_TX
] = iwl4965_rx_reply_tx
;
3236 /* Set up hardware specific Rx handlers */
3237 iwl4965_hw_rx_handler_setup(priv
);
3241 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3242 * @rxb: Rx buffer to reclaim
3244 * If an Rx buffer has an async callback associated with it the callback
3245 * will be executed. The attached skb (if present) will only be freed
3246 * if the callback returns 1
3248 static void iwl4965_tx_cmd_complete(struct iwl_priv
*priv
,
3249 struct iwl4965_rx_mem_buffer
*rxb
)
3251 struct iwl4965_rx_packet
*pkt
= (struct iwl4965_rx_packet
*)rxb
->skb
->data
;
3252 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
3253 int txq_id
= SEQ_TO_QUEUE(sequence
);
3254 int index
= SEQ_TO_INDEX(sequence
);
3255 int huge
= sequence
& SEQ_HUGE_FRAME
;
3257 struct iwl_cmd
*cmd
;
3259 /* If a Tx command is being handled and it isn't in the actual
3260 * command queue then there a command routing bug has been introduced
3261 * in the queue management code. */
3262 if (txq_id
!= IWL_CMD_QUEUE_NUM
)
3263 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3264 txq_id
, pkt
->hdr
.cmd
);
3265 BUG_ON(txq_id
!= IWL_CMD_QUEUE_NUM
);
3267 cmd_index
= get_cmd_index(&priv
->txq
[IWL_CMD_QUEUE_NUM
].q
, index
, huge
);
3268 cmd
= &priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_index
];
3270 /* Input error checking is done when commands are added to queue. */
3271 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
3272 cmd
->meta
.source
->u
.skb
= rxb
->skb
;
3274 } else if (cmd
->meta
.u
.callback
&&
3275 !cmd
->meta
.u
.callback(priv
, cmd
, rxb
->skb
))
3278 iwl4965_tx_queue_reclaim(priv
, txq_id
, index
);
3280 if (!(cmd
->meta
.flags
& CMD_ASYNC
)) {
3281 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
3282 wake_up_interruptible(&priv
->wait_command_queue
);
3286 /************************** RX-FUNCTIONS ****************************/
3288 * Rx theory of operation
3290 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3291 * each of which point to Receive Buffers to be filled by 4965. These get
3292 * used not only for Rx frames, but for any command response or notification
3293 * from the 4965. The driver and 4965 manage the Rx buffers by means
3294 * of indexes into the circular buffer.
3297 * The host/firmware share two index registers for managing the Rx buffers.
3299 * The READ index maps to the first position that the firmware may be writing
3300 * to -- the driver can read up to (but not including) this position and get
3302 * The READ index is managed by the firmware once the card is enabled.
3304 * The WRITE index maps to the last position the driver has read from -- the
3305 * position preceding WRITE is the last slot the firmware can place a packet.
3307 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3310 * During initialization, the host sets up the READ queue position to the first
3311 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3313 * When the firmware places a packet in a buffer, it will advance the READ index
3314 * and fire the RX interrupt. The driver can then query the READ index and
3315 * process as many packets as possible, moving the WRITE index forward as it
3316 * resets the Rx queue buffers with new memory.
3318 * The management in the driver is as follows:
3319 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3320 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3321 * to replenish the iwl->rxq->rx_free.
3322 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3323 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3324 * 'processed' and 'read' driver indexes as well)
3325 * + A received packet is processed and handed to the kernel network stack,
3326 * detached from the iwl->rxq. The driver 'processed' index is updated.
3327 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3328 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3329 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3330 * were enough free buffers and RX_STALLED is set it is cleared.
3335 * iwl4965_rx_queue_alloc() Allocates rx_free
3336 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
3337 * iwl4965_rx_queue_restock
3338 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3339 * queue, updates firmware pointers, and updates
3340 * the WRITE index. If insufficient rx_free buffers
3341 * are available, schedules iwl4965_rx_replenish
3343 * -- enable interrupts --
3344 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
3345 * READ INDEX, detaching the SKB from the pool.
3346 * Moves the packet buffer from queue to rx_used.
3347 * Calls iwl4965_rx_queue_restock to refill any empty
3354 * iwl4965_rx_queue_space - Return number of free slots available in queue.
3356 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue
*q
)
3358 int s
= q
->read
- q
->write
;
3361 /* keep some buffer to not confuse full and empty queue */
3369 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3371 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*q
)
3375 unsigned long flags
;
3377 spin_lock_irqsave(&q
->lock
, flags
);
3379 if (q
->need_update
== 0)
3382 /* If power-saving is in use, make sure device is awake */
3383 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
3384 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3386 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
3387 iwl_set_bit(priv
, CSR_GP_CNTRL
,
3388 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
3392 rc
= iwl_grab_nic_access(priv
);
3396 /* Device expects a multiple of 8 */
3397 iwl_write_direct32(priv
, FH_RSCSR_CHNL0_WPTR
,
3399 iwl_release_nic_access(priv
);
3401 /* Else device is assumed to be awake */
3403 /* Device expects a multiple of 8 */
3404 iwl_write32(priv
, FH_RSCSR_CHNL0_WPTR
, q
->write
& ~0x7);
3410 spin_unlock_irqrestore(&q
->lock
, flags
);
3415 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3417 static inline __le32
iwl4965_dma_addr2rbd_ptr(struct iwl_priv
*priv
,
3418 dma_addr_t dma_addr
)
3420 return cpu_to_le32((u32
)(dma_addr
>> 8));
3425 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3427 * If there are slots in the RX queue that need to be restocked,
3428 * and we have free pre-allocated buffers, fill the ranks as much
3429 * as we can, pulling from rx_free.
3431 * This moves the 'write' index forward to catch up with 'processed', and
3432 * also updates the memory address in the firmware to reference the new
3435 static int iwl4965_rx_queue_restock(struct iwl_priv
*priv
)
3437 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3438 struct list_head
*element
;
3439 struct iwl4965_rx_mem_buffer
*rxb
;
3440 unsigned long flags
;
3443 spin_lock_irqsave(&rxq
->lock
, flags
);
3444 write
= rxq
->write
& ~0x7;
3445 while ((iwl4965_rx_queue_space(rxq
) > 0) && (rxq
->free_count
)) {
3446 /* Get next free Rx buffer, remove from free list */
3447 element
= rxq
->rx_free
.next
;
3448 rxb
= list_entry(element
, struct iwl4965_rx_mem_buffer
, list
);
3451 /* Point to Rx buffer via next RBD in circular buffer */
3452 rxq
->bd
[rxq
->write
] = iwl4965_dma_addr2rbd_ptr(priv
, rxb
->dma_addr
);
3453 rxq
->queue
[rxq
->write
] = rxb
;
3454 rxq
->write
= (rxq
->write
+ 1) & RX_QUEUE_MASK
;
3457 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3458 /* If the pre-allocated buffer pool is dropping low, schedule to
3460 if (rxq
->free_count
<= RX_LOW_WATERMARK
)
3461 queue_work(priv
->workqueue
, &priv
->rx_replenish
);
3464 /* If we've added more space for the firmware to place data, tell it.
3465 * Increment device's write pointer in multiples of 8. */
3466 if ((write
!= (rxq
->write
& ~0x7))
3467 || (abs(rxq
->write
- rxq
->read
) > 7)) {
3468 spin_lock_irqsave(&rxq
->lock
, flags
);
3469 rxq
->need_update
= 1;
3470 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3471 rc
= iwl4965_rx_queue_update_write_ptr(priv
, rxq
);
3480 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3482 * When moving to rx_free an SKB is allocated for the slot.
3484 * Also restock the Rx queue via iwl4965_rx_queue_restock.
3485 * This is called as a scheduled work item (except for during initialization)
3487 static void iwl4965_rx_allocate(struct iwl_priv
*priv
)
3489 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3490 struct list_head
*element
;
3491 struct iwl4965_rx_mem_buffer
*rxb
;
3492 unsigned long flags
;
3493 spin_lock_irqsave(&rxq
->lock
, flags
);
3494 while (!list_empty(&rxq
->rx_used
)) {
3495 element
= rxq
->rx_used
.next
;
3496 rxb
= list_entry(element
, struct iwl4965_rx_mem_buffer
, list
);
3498 /* Alloc a new receive buffer */
3500 alloc_skb(priv
->hw_params
.rx_buf_size
,
3501 __GFP_NOWARN
| GFP_ATOMIC
);
3503 if (net_ratelimit())
3504 printk(KERN_CRIT DRV_NAME
3505 ": Can not allocate SKB buffers\n");
3506 /* We don't reschedule replenish work here -- we will
3507 * call the restock method and if it still needs
3508 * more buffers it will schedule replenish */
3511 priv
->alloc_rxb_skb
++;
3514 /* Get physical address of RB/SKB */
3516 pci_map_single(priv
->pci_dev
, rxb
->skb
->data
,
3517 priv
->hw_params
.rx_buf_size
, PCI_DMA_FROMDEVICE
);
3518 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
3521 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3525 * this should be called while priv->lock is locked
3527 static void __iwl4965_rx_replenish(void *data
)
3529 struct iwl_priv
*priv
= data
;
3531 iwl4965_rx_allocate(priv
);
3532 iwl4965_rx_queue_restock(priv
);
3536 void iwl4965_rx_replenish(void *data
)
3538 struct iwl_priv
*priv
= data
;
3539 unsigned long flags
;
3541 iwl4965_rx_allocate(priv
);
3543 spin_lock_irqsave(&priv
->lock
, flags
);
3544 iwl4965_rx_queue_restock(priv
);
3545 spin_unlock_irqrestore(&priv
->lock
, flags
);
3548 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3549 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3550 * This free routine walks the list of POOL entries and if SKB is set to
3551 * non NULL it is unmapped and freed
3553 static void iwl4965_rx_queue_free(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*rxq
)
3556 for (i
= 0; i
< RX_QUEUE_SIZE
+ RX_FREE_BUFFERS
; i
++) {
3557 if (rxq
->pool
[i
].skb
!= NULL
) {
3558 pci_unmap_single(priv
->pci_dev
,
3559 rxq
->pool
[i
].dma_addr
,
3560 priv
->hw_params
.rx_buf_size
,
3561 PCI_DMA_FROMDEVICE
);
3562 dev_kfree_skb(rxq
->pool
[i
].skb
);
3566 pci_free_consistent(priv
->pci_dev
, 4 * RX_QUEUE_SIZE
, rxq
->bd
,
3571 int iwl4965_rx_queue_alloc(struct iwl_priv
*priv
)
3573 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3574 struct pci_dev
*dev
= priv
->pci_dev
;
3577 spin_lock_init(&rxq
->lock
);
3578 INIT_LIST_HEAD(&rxq
->rx_free
);
3579 INIT_LIST_HEAD(&rxq
->rx_used
);
3581 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3582 rxq
->bd
= pci_alloc_consistent(dev
, 4 * RX_QUEUE_SIZE
, &rxq
->dma_addr
);
3586 /* Fill the rx_used queue with _all_ of the Rx buffers */
3587 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++)
3588 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
3590 /* Set us so that we have processed and used all buffers, but have
3591 * not restocked the Rx queue with fresh buffers */
3592 rxq
->read
= rxq
->write
= 0;
3593 rxq
->free_count
= 0;
3594 rxq
->need_update
= 0;
3598 void iwl4965_rx_queue_reset(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*rxq
)
3600 unsigned long flags
;
3602 spin_lock_irqsave(&rxq
->lock
, flags
);
3603 INIT_LIST_HEAD(&rxq
->rx_free
);
3604 INIT_LIST_HEAD(&rxq
->rx_used
);
3605 /* Fill the rx_used queue with _all_ of the Rx buffers */
3606 for (i
= 0; i
< RX_FREE_BUFFERS
+ RX_QUEUE_SIZE
; i
++) {
3607 /* In the reset function, these buffers may have been allocated
3608 * to an SKB, so we need to unmap and free potential storage */
3609 if (rxq
->pool
[i
].skb
!= NULL
) {
3610 pci_unmap_single(priv
->pci_dev
,
3611 rxq
->pool
[i
].dma_addr
,
3612 priv
->hw_params
.rx_buf_size
,
3613 PCI_DMA_FROMDEVICE
);
3614 priv
->alloc_rxb_skb
--;
3615 dev_kfree_skb(rxq
->pool
[i
].skb
);
3616 rxq
->pool
[i
].skb
= NULL
;
3618 list_add_tail(&rxq
->pool
[i
].list
, &rxq
->rx_used
);
3621 /* Set us so that we have processed and used all buffers, but have
3622 * not restocked the Rx queue with fresh buffers */
3623 rxq
->read
= rxq
->write
= 0;
3624 rxq
->free_count
= 0;
3625 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3628 /* Convert linear signal-to-noise ratio into dB */
3629 static u8 ratio2dB
[100] = {
3630 /* 0 1 2 3 4 5 6 7 8 9 */
3631 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3632 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3633 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3634 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3635 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3636 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3637 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3638 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3639 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3640 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3643 /* Calculates a relative dB value from a ratio of linear
3644 * (i.e. not dB) signal levels.
3645 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3646 int iwl4965_calc_db_from_ratio(int sig_ratio
)
3648 /* 1000:1 or higher just report as 60 dB */
3649 if (sig_ratio
>= 1000)
3652 /* 100:1 or higher, divide by 10 and use table,
3653 * add 20 dB to make up for divide by 10 */
3654 if (sig_ratio
>= 100)
3655 return (20 + (int)ratio2dB
[sig_ratio
/10]);
3657 /* We shouldn't see this */
3661 /* Use table for ratios 1:1 - 99:1 */
3662 return (int)ratio2dB
[sig_ratio
];
3665 #define PERFECT_RSSI (-20) /* dBm */
3666 #define WORST_RSSI (-95) /* dBm */
3667 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3669 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3670 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3671 * about formulas used below. */
3672 int iwl4965_calc_sig_qual(int rssi_dbm
, int noise_dbm
)
3675 int degradation
= PERFECT_RSSI
- rssi_dbm
;
3677 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3678 * as indicator; formula is (signal dbm - noise dbm).
3679 * SNR at or above 40 is a great signal (100%).
3680 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3681 * Weakest usable signal is usually 10 - 15 dB SNR. */
3683 if (rssi_dbm
- noise_dbm
>= 40)
3685 else if (rssi_dbm
< noise_dbm
)
3687 sig_qual
= ((rssi_dbm
- noise_dbm
) * 5) / 2;
3689 /* Else use just the signal level.
3690 * This formula is a least squares fit of data points collected and
3691 * compared with a reference system that had a percentage (%) display
3692 * for signal quality. */
3694 sig_qual
= (100 * (RSSI_RANGE
* RSSI_RANGE
) - degradation
*
3695 (15 * RSSI_RANGE
+ 62 * degradation
)) /
3696 (RSSI_RANGE
* RSSI_RANGE
);
3700 else if (sig_qual
< 1)
3707 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3709 * Uses the priv->rx_handlers callback function array to invoke
3710 * the appropriate handlers, including command responses,
3711 * frame-received notifications, and other notifications.
3713 static void iwl4965_rx_handle(struct iwl_priv
*priv
)
3715 struct iwl4965_rx_mem_buffer
*rxb
;
3716 struct iwl4965_rx_packet
*pkt
;
3717 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
3720 unsigned long flags
;
3724 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3725 * buffer that the driver may process (last buffer filled by ucode). */
3726 r
= iwl4965_hw_get_rx_read(priv
);
3729 /* Rx interrupt, but nothing sent from uCode */
3731 IWL_DEBUG(IWL_DL_RX
| IWL_DL_ISR
, "r = %d, i = %d\n", r
, i
);
3733 if (iwl4965_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
3737 rxb
= rxq
->queue
[i
];
3739 /* If an RXB doesn't have a Rx queue slot associated with it,
3740 * then a bug has been introduced in the queue refilling
3741 * routines -- catch it here */
3742 BUG_ON(rxb
== NULL
);
3744 rxq
->queue
[i
] = NULL
;
3746 pci_dma_sync_single_for_cpu(priv
->pci_dev
, rxb
->dma_addr
,
3747 priv
->hw_params
.rx_buf_size
,
3748 PCI_DMA_FROMDEVICE
);
3749 pkt
= (struct iwl4965_rx_packet
*)rxb
->skb
->data
;
3751 /* Reclaim a command buffer only if this packet is a response
3752 * to a (driver-originated) command.
3753 * If the packet (e.g. Rx frame) originated from uCode,
3754 * there is no command buffer to reclaim.
3755 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3756 * but apparently a few don't get set; catch them here. */
3757 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
3758 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
3759 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
3760 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
3761 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
3762 (pkt
->hdr
.cmd
!= REPLY_TX
);
3764 /* Based on type of command response or notification,
3765 * handle those that need handling via function in
3766 * rx_handlers table. See iwl4965_setup_rx_handlers() */
3767 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
3768 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
3769 "r = %d, i = %d, %s, 0x%02x\n", r
, i
,
3770 get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
3771 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
3773 /* No handling needed */
3774 IWL_DEBUG(IWL_DL_HOST_COMMAND
| IWL_DL_RX
| IWL_DL_ISR
,
3775 "r %d i %d No handler needed for %s, 0x%02x\n",
3776 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
3781 /* Invoke any callbacks, transfer the skb to caller, and
3782 * fire off the (possibly) blocking iwl_send_cmd()
3783 * as we reclaim the driver command queue */
3784 if (rxb
&& rxb
->skb
)
3785 iwl4965_tx_cmd_complete(priv
, rxb
);
3787 IWL_WARNING("Claim null rxb?\n");
3790 /* For now we just don't re-use anything. We can tweak this
3791 * later to try and re-use notification packets and SKBs that
3792 * fail to Rx correctly */
3793 if (rxb
->skb
!= NULL
) {
3794 priv
->alloc_rxb_skb
--;
3795 dev_kfree_skb_any(rxb
->skb
);
3799 pci_unmap_single(priv
->pci_dev
, rxb
->dma_addr
,
3800 priv
->hw_params
.rx_buf_size
,
3801 PCI_DMA_FROMDEVICE
);
3802 spin_lock_irqsave(&rxq
->lock
, flags
);
3803 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
3804 spin_unlock_irqrestore(&rxq
->lock
, flags
);
3805 i
= (i
+ 1) & RX_QUEUE_MASK
;
3806 /* If there are a lot of unused frames,
3807 * restock the Rx queue so ucode wont assert. */
3812 __iwl4965_rx_replenish(priv
);
3818 /* Backtrack one entry */
3820 iwl4965_rx_queue_restock(priv
);
3824 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
3826 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv
*priv
,
3827 struct iwl4965_tx_queue
*txq
)
3831 int txq_id
= txq
->q
.id
;
3833 if (txq
->need_update
== 0)
3836 /* if we're trying to save power */
3837 if (test_bit(STATUS_POWER_PMI
, &priv
->status
)) {
3838 /* wake up nic if it's powered down ...
3839 * uCode will wake up, and interrupt us again, so next
3840 * time we'll skip this part. */
3841 reg
= iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
3843 if (reg
& CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP
) {
3844 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg
);
3845 iwl_set_bit(priv
, CSR_GP_CNTRL
,
3846 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
3850 /* restore this queue's parameters in nic hardware. */
3851 rc
= iwl_grab_nic_access(priv
);
3854 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
3855 txq
->q
.write_ptr
| (txq_id
<< 8));
3856 iwl_release_nic_access(priv
);
3858 /* else not in power-save mode, uCode will never sleep when we're
3859 * trying to tx (during RFKILL, we're not trying to tx). */
3861 iwl_write32(priv
, HBUS_TARG_WRPTR
,
3862 txq
->q
.write_ptr
| (txq_id
<< 8));
3864 txq
->need_update
= 0;
3869 #ifdef CONFIG_IWLWIFI_DEBUG
3870 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd
*rxon
)
3872 DECLARE_MAC_BUF(mac
);
3874 IWL_DEBUG_RADIO("RX CONFIG:\n");
3875 iwl_print_hex_dump(IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
3876 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon
->channel
));
3877 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon
->flags
));
3878 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3879 le32_to_cpu(rxon
->filter_flags
));
3880 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon
->dev_type
);
3881 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3882 rxon
->ofdm_basic_rates
);
3883 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon
->cck_basic_rates
);
3884 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
3885 print_mac(mac
, rxon
->node_addr
));
3886 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
3887 print_mac(mac
, rxon
->bssid_addr
));
3888 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon
->assoc_id
));
3892 static void iwl4965_enable_interrupts(struct iwl_priv
*priv
)
3894 IWL_DEBUG_ISR("Enabling interrupts\n");
3895 set_bit(STATUS_INT_ENABLED
, &priv
->status
);
3896 iwl_write32(priv
, CSR_INT_MASK
, CSR_INI_SET_MASK
);
3899 /* call this function to flush any scheduled tasklet */
3900 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
3902 /* wait to make sure we flush pedding tasklet*/
3903 synchronize_irq(priv
->pci_dev
->irq
);
3904 tasklet_kill(&priv
->irq_tasklet
);
3907 static inline void iwl4965_disable_interrupts(struct iwl_priv
*priv
)
3909 clear_bit(STATUS_INT_ENABLED
, &priv
->status
);
3911 /* disable interrupts from uCode/NIC to host */
3912 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
3914 /* acknowledge/clear/reset any interrupts still pending
3915 * from uCode or flow handler (Rx/Tx DMA) */
3916 iwl_write32(priv
, CSR_INT
, 0xffffffff);
3917 iwl_write32(priv
, CSR_FH_INT_STATUS
, 0xffffffff);
3918 IWL_DEBUG_ISR("Disabled interrupts\n");
3921 static const char *desc_lookup(int i
)
3929 return "BAD_CHECKSUM";
3931 return "NMI_INTERRUPT";
3935 return "FATAL_ERROR";
3941 #define ERROR_START_OFFSET (1 * sizeof(u32))
3942 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3944 static void iwl4965_dump_nic_error_log(struct iwl_priv
*priv
)
3947 u32 desc
, time
, count
, base
, data1
;
3948 u32 blink1
, blink2
, ilink1
, ilink2
;
3951 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
3953 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
3954 IWL_ERROR("Not valid error log pointer 0x%08X\n", base
);
3958 rc
= iwl_grab_nic_access(priv
);
3960 IWL_WARNING("Can not read from adapter at this time.\n");
3964 count
= iwl_read_targ_mem(priv
, base
);
3966 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
3967 IWL_ERROR("Start IWL Error Log Dump:\n");
3968 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv
->status
, count
);
3971 desc
= iwl_read_targ_mem(priv
, base
+ 1 * sizeof(u32
));
3972 blink1
= iwl_read_targ_mem(priv
, base
+ 3 * sizeof(u32
));
3973 blink2
= iwl_read_targ_mem(priv
, base
+ 4 * sizeof(u32
));
3974 ilink1
= iwl_read_targ_mem(priv
, base
+ 5 * sizeof(u32
));
3975 ilink2
= iwl_read_targ_mem(priv
, base
+ 6 * sizeof(u32
));
3976 data1
= iwl_read_targ_mem(priv
, base
+ 7 * sizeof(u32
));
3977 data2
= iwl_read_targ_mem(priv
, base
+ 8 * sizeof(u32
));
3978 line
= iwl_read_targ_mem(priv
, base
+ 9 * sizeof(u32
));
3979 time
= iwl_read_targ_mem(priv
, base
+ 11 * sizeof(u32
));
3981 IWL_ERROR("Desc Time "
3982 "data1 data2 line\n");
3983 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
3984 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
3985 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
3986 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1
, blink2
,
3989 iwl_release_nic_access(priv
);
3992 #define EVENT_START_OFFSET (4 * sizeof(u32))
3995 * iwl4965_print_event_log - Dump error event log to syslog
3997 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3999 static void iwl4965_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
4000 u32 num_events
, u32 mode
)
4003 u32 base
; /* SRAM byte address of event log header */
4004 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
4005 u32 ptr
; /* SRAM byte address of log data */
4006 u32 ev
, time
, data
; /* event log data */
4008 if (num_events
== 0)
4011 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4014 event_size
= 2 * sizeof(u32
);
4016 event_size
= 3 * sizeof(u32
);
4018 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
4020 /* "time" is actually "data" for mode 0 (no timestamp).
4021 * place event id # at far right for easier visual parsing. */
4022 for (i
= 0; i
< num_events
; i
++) {
4023 ev
= iwl_read_targ_mem(priv
, ptr
);
4025 time
= iwl_read_targ_mem(priv
, ptr
);
4028 IWL_ERROR("0x%08x\t%04u\n", time
, ev
); /* data, ev */
4030 data
= iwl_read_targ_mem(priv
, ptr
);
4032 IWL_ERROR("%010u\t0x%08x\t%04u\n", time
, data
, ev
);
4037 static void iwl4965_dump_nic_event_log(struct iwl_priv
*priv
)
4040 u32 base
; /* SRAM byte address of event log header */
4041 u32 capacity
; /* event log capacity in # entries */
4042 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
4043 u32 num_wraps
; /* # times uCode wrapped to top of log */
4044 u32 next_entry
; /* index of next entry to be written by uCode */
4045 u32 size
; /* # entries that we'll print */
4047 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
4048 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
4049 IWL_ERROR("Invalid event log pointer 0x%08X\n", base
);
4053 rc
= iwl_grab_nic_access(priv
);
4055 IWL_WARNING("Can not read from adapter at this time.\n");
4059 /* event log header */
4060 capacity
= iwl_read_targ_mem(priv
, base
);
4061 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
4062 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
4063 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
4065 size
= num_wraps
? capacity
: next_entry
;
4067 /* bail out if nothing in log */
4069 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4070 iwl_release_nic_access(priv
);
4074 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4077 /* if uCode has wrapped back to top of log, start at the oldest entry,
4078 * i.e the next one that uCode would fill. */
4080 iwl4965_print_event_log(priv
, next_entry
,
4081 capacity
- next_entry
, mode
);
4083 /* (then/else) start at top of log */
4084 iwl4965_print_event_log(priv
, 0, next_entry
, mode
);
4086 iwl_release_nic_access(priv
);
4090 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4092 static void iwl4965_irq_handle_error(struct iwl_priv
*priv
)
4094 /* Set the FW error flag -- cleared on iwl4965_down */
4095 set_bit(STATUS_FW_ERROR
, &priv
->status
);
4097 /* Cancel currently queued command. */
4098 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
4100 #ifdef CONFIG_IWLWIFI_DEBUG
4101 if (iwl_debug_level
& IWL_DL_FW_ERRORS
) {
4102 iwl4965_dump_nic_error_log(priv
);
4103 iwl4965_dump_nic_event_log(priv
);
4104 iwl4965_print_rx_config_cmd(&priv
->staging_rxon
);
4108 wake_up_interruptible(&priv
->wait_command_queue
);
4110 /* Keep the restart process from trying to send host
4111 * commands by clearing the INIT status bit */
4112 clear_bit(STATUS_READY
, &priv
->status
);
4114 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
4115 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_FW_ERRORS
,
4116 "Restarting adapter due to uCode error.\n");
4118 if (iwl_is_associated(priv
)) {
4119 memcpy(&priv
->recovery_rxon
, &priv
->active_rxon
,
4120 sizeof(priv
->recovery_rxon
));
4121 priv
->error_recovering
= 1;
4123 queue_work(priv
->workqueue
, &priv
->restart
);
4127 static void iwl4965_error_recovery(struct iwl_priv
*priv
)
4129 unsigned long flags
;
4131 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
4132 sizeof(priv
->staging_rxon
));
4133 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
4134 iwl4965_commit_rxon(priv
);
4136 iwl4965_rxon_add_station(priv
, priv
->bssid
, 1);
4138 spin_lock_irqsave(&priv
->lock
, flags
);
4139 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
4140 priv
->error_recovering
= 0;
4141 spin_unlock_irqrestore(&priv
->lock
, flags
);
4144 static void iwl4965_irq_tasklet(struct iwl_priv
*priv
)
4146 u32 inta
, handled
= 0;
4148 unsigned long flags
;
4149 #ifdef CONFIG_IWLWIFI_DEBUG
4153 spin_lock_irqsave(&priv
->lock
, flags
);
4155 /* Ack/clear/reset pending uCode interrupts.
4156 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4157 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4158 inta
= iwl_read32(priv
, CSR_INT
);
4159 iwl_write32(priv
, CSR_INT
, inta
);
4161 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4162 * Any new interrupts that happen after this, either while we're
4163 * in this tasklet, or later, will show up in next ISR/tasklet. */
4164 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4165 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
4167 #ifdef CONFIG_IWLWIFI_DEBUG
4168 if (iwl_debug_level
& IWL_DL_ISR
) {
4169 /* just for debug */
4170 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
4171 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4172 inta
, inta_mask
, inta_fh
);
4176 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4177 * atomic, make sure that inta covers all the interrupts that
4178 * we've discovered, even if FH interrupt came in just after
4179 * reading CSR_INT. */
4180 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
4181 inta
|= CSR_INT_BIT_FH_RX
;
4182 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
4183 inta
|= CSR_INT_BIT_FH_TX
;
4185 /* Now service all interrupt bits discovered above. */
4186 if (inta
& CSR_INT_BIT_HW_ERR
) {
4187 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4189 /* Tell the device to stop sending interrupts */
4190 iwl4965_disable_interrupts(priv
);
4192 iwl4965_irq_handle_error(priv
);
4194 handled
|= CSR_INT_BIT_HW_ERR
;
4196 spin_unlock_irqrestore(&priv
->lock
, flags
);
4201 #ifdef CONFIG_IWLWIFI_DEBUG
4202 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4203 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4204 if (inta
& CSR_INT_BIT_SCD
)
4205 IWL_DEBUG_ISR("Scheduler finished to transmit "
4206 "the frame/frames.\n");
4208 /* Alive notification via Rx interrupt will do the real work */
4209 if (inta
& CSR_INT_BIT_ALIVE
)
4210 IWL_DEBUG_ISR("Alive interrupt\n");
4213 /* Safely ignore these bits for debug checks below */
4214 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
4216 /* HW RF KILL switch toggled */
4217 if (inta
& CSR_INT_BIT_RF_KILL
) {
4219 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
4220 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
4223 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
| IWL_DL_ISR
,
4224 "RF_KILL bit toggled to %s.\n",
4225 hw_rf_kill
? "disable radio":"enable radio");
4227 /* Queue restart only if RF_KILL switch was set to "kill"
4228 * when we loaded driver, and is now set to "enable".
4229 * After we're Alive, RF_KILL gets handled by
4230 * iwl4965_rx_card_state_notif() */
4231 if (!hw_rf_kill
&& !test_bit(STATUS_ALIVE
, &priv
->status
)) {
4232 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
4233 queue_work(priv
->workqueue
, &priv
->restart
);
4236 handled
|= CSR_INT_BIT_RF_KILL
;
4239 /* Chip got too hot and stopped itself */
4240 if (inta
& CSR_INT_BIT_CT_KILL
) {
4241 IWL_ERROR("Microcode CT kill error detected.\n");
4242 handled
|= CSR_INT_BIT_CT_KILL
;
4245 /* Error detected by uCode */
4246 if (inta
& CSR_INT_BIT_SW_ERR
) {
4247 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4249 iwl4965_irq_handle_error(priv
);
4250 handled
|= CSR_INT_BIT_SW_ERR
;
4253 /* uCode wakes up after power-down sleep */
4254 if (inta
& CSR_INT_BIT_WAKEUP
) {
4255 IWL_DEBUG_ISR("Wakeup interrupt\n");
4256 iwl4965_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
4257 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[0]);
4258 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[1]);
4259 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[2]);
4260 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[3]);
4261 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[4]);
4262 iwl4965_tx_queue_update_write_ptr(priv
, &priv
->txq
[5]);
4264 handled
|= CSR_INT_BIT_WAKEUP
;
4267 /* All uCode command responses, including Tx command responses,
4268 * Rx "responses" (frame-received notification), and other
4269 * notifications from uCode come through here*/
4270 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
4271 iwl4965_rx_handle(priv
);
4272 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
4275 if (inta
& CSR_INT_BIT_FH_TX
) {
4276 IWL_DEBUG_ISR("Tx interrupt\n");
4277 handled
|= CSR_INT_BIT_FH_TX
;
4280 if (inta
& ~handled
)
4281 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
4283 if (inta
& ~CSR_INI_SET_MASK
) {
4284 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4285 inta
& ~CSR_INI_SET_MASK
);
4286 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh
);
4289 /* Re-enable all interrupts */
4290 /* only Re-enable if diabled by irq */
4291 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
4292 iwl4965_enable_interrupts(priv
);
4294 #ifdef CONFIG_IWLWIFI_DEBUG
4295 if (iwl_debug_level
& (IWL_DL_ISR
)) {
4296 inta
= iwl_read32(priv
, CSR_INT
);
4297 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
4298 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4299 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4300 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
4303 spin_unlock_irqrestore(&priv
->lock
, flags
);
4306 static irqreturn_t
iwl4965_isr(int irq
, void *data
)
4308 struct iwl_priv
*priv
= data
;
4309 u32 inta
, inta_mask
;
4314 spin_lock(&priv
->lock
);
4316 /* Disable (but don't clear!) interrupts here to avoid
4317 * back-to-back ISRs and sporadic interrupts from our NIC.
4318 * If we have something to service, the tasklet will re-enable ints.
4319 * If we *don't* have something, we'll re-enable before leaving here. */
4320 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
); /* just for debug */
4321 iwl_write32(priv
, CSR_INT_MASK
, 0x00000000);
4323 /* Discover which interrupts are active/pending */
4324 inta
= iwl_read32(priv
, CSR_INT
);
4325 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
4327 /* Ignore interrupt if there's nothing in NIC to service.
4328 * This may be due to IRQ shared with another device,
4329 * or due to sporadic interrupts thrown from our NIC. */
4330 if (!inta
&& !inta_fh
) {
4331 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4335 if ((inta
== 0xFFFFFFFF) || ((inta
& 0xFFFFFFF0) == 0xa5a5a5a0)) {
4336 /* Hardware disappeared. It might have already raised
4338 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta
);
4342 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4343 inta
, inta_mask
, inta_fh
);
4345 inta
&= ~CSR_INT_BIT_SCD
;
4347 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4348 if (likely(inta
|| inta_fh
))
4349 tasklet_schedule(&priv
->irq_tasklet
);
4352 spin_unlock(&priv
->lock
);
4356 /* re-enable interrupts here since we don't have anything to service. */
4357 /* only Re-enable if diabled by irq */
4358 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
4359 iwl4965_enable_interrupts(priv
);
4360 spin_unlock(&priv
->lock
);
4364 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4365 * sending probe req. This should be set long enough to hear probe responses
4366 * from more than one AP. */
4367 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
4368 #define IWL_ACTIVE_DWELL_TIME_52 (10)
4370 /* For faster active scanning, scan will move to the next channel if fewer than
4371 * PLCP_QUIET_THRESH packets are heard on this channel within
4372 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4373 * time if it's a quiet channel (nothing responded to our probe, and there's
4374 * no other traffic).
4375 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4376 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
4377 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
4379 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4380 * Must be set longer than active dwell time.
4381 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4382 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4383 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4384 #define IWL_PASSIVE_DWELL_BASE (100)
4385 #define IWL_CHANNEL_TUNE_TIME 5
4387 static inline u16
iwl4965_get_active_dwell_time(struct iwl_priv
*priv
,
4388 enum ieee80211_band band
)
4390 if (band
== IEEE80211_BAND_5GHZ
)
4391 return IWL_ACTIVE_DWELL_TIME_52
;
4393 return IWL_ACTIVE_DWELL_TIME_24
;
4396 static u16
iwl4965_get_passive_dwell_time(struct iwl_priv
*priv
,
4397 enum ieee80211_band band
)
4399 u16 active
= iwl4965_get_active_dwell_time(priv
, band
);
4400 u16 passive
= (band
!= IEEE80211_BAND_5GHZ
) ?
4401 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_24
:
4402 IWL_PASSIVE_DWELL_BASE
+ IWL_PASSIVE_DWELL_TIME_52
;
4404 if (iwl_is_associated(priv
)) {
4405 /* If we're associated, we clamp the maximum passive
4406 * dwell time to be 98% of the beacon interval (minus
4407 * 2 * channel tune time) */
4408 passive
= priv
->beacon_int
;
4409 if ((passive
> IWL_PASSIVE_DWELL_BASE
) || !passive
)
4410 passive
= IWL_PASSIVE_DWELL_BASE
;
4411 passive
= (passive
* 98) / 100 - IWL_CHANNEL_TUNE_TIME
* 2;
4414 if (passive
<= active
)
4415 passive
= active
+ 1;
4420 static int iwl4965_get_channels_for_scan(struct iwl_priv
*priv
,
4421 enum ieee80211_band band
,
4422 u8 is_active
, u8 direct_mask
,
4423 struct iwl4965_scan_channel
*scan_ch
)
4425 const struct ieee80211_channel
*channels
= NULL
;
4426 const struct ieee80211_supported_band
*sband
;
4427 const struct iwl_channel_info
*ch_info
;
4428 u16 passive_dwell
= 0;
4429 u16 active_dwell
= 0;
4432 sband
= iwl_get_hw_mode(priv
, band
);
4436 channels
= sband
->channels
;
4438 active_dwell
= iwl4965_get_active_dwell_time(priv
, band
);
4439 passive_dwell
= iwl4965_get_passive_dwell_time(priv
, band
);
4441 for (i
= 0, added
= 0; i
< sband
->n_channels
; i
++) {
4442 if (channels
[i
].flags
& IEEE80211_CHAN_DISABLED
)
4445 scan_ch
->channel
= ieee80211_frequency_to_channel(channels
[i
].center_freq
);
4447 ch_info
= iwl_get_channel_info(priv
, band
,
4449 if (!is_channel_valid(ch_info
)) {
4450 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4455 if (!is_active
|| is_channel_passive(ch_info
) ||
4456 (channels
[i
].flags
& IEEE80211_CHAN_PASSIVE_SCAN
))
4457 scan_ch
->type
= 0; /* passive */
4459 scan_ch
->type
= 1; /* active */
4461 if (scan_ch
->type
& 1)
4462 scan_ch
->type
|= (direct_mask
<< 1);
4464 scan_ch
->active_dwell
= cpu_to_le16(active_dwell
);
4465 scan_ch
->passive_dwell
= cpu_to_le16(passive_dwell
);
4467 /* Set txpower levels to defaults */
4468 scan_ch
->tpc
.dsp_atten
= 110;
4469 /* scan_pwr_info->tpc.dsp_atten; */
4471 /*scan_pwr_info->tpc.tx_gain; */
4472 if (band
== IEEE80211_BAND_5GHZ
)
4473 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (3 << 3)) | 3;
4475 scan_ch
->tpc
.tx_gain
= ((1 << 5) | (5 << 3));
4476 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4478 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4482 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4484 (scan_ch
->type
& 1) ? "ACTIVE" : "PASSIVE",
4485 (scan_ch
->type
& 1) ?
4486 active_dwell
: passive_dwell
);
4492 IWL_DEBUG_SCAN("total channels to scan %d \n", added
);
4496 static void iwl4965_init_hw_rates(struct iwl_priv
*priv
,
4497 struct ieee80211_rate
*rates
)
4501 for (i
= 0; i
< IWL_RATE_COUNT
; i
++) {
4502 rates
[i
].bitrate
= iwl4965_rates
[i
].ieee
* 5;
4503 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
4504 rates
[i
].hw_value_short
= i
;
4506 if ((i
> IWL_LAST_OFDM_RATE
) || (i
< IWL_FIRST_OFDM_RATE
)) {
4508 * If CCK != 1M then set short preamble rate flag.
4511 (iwl4965_rates
[i
].plcp
== IWL_RATE_1M_PLCP
) ?
4512 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
4518 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4520 int iwl4965_init_geos(struct iwl_priv
*priv
)
4522 struct iwl_channel_info
*ch
;
4523 struct ieee80211_supported_band
*sband
;
4524 struct ieee80211_channel
*channels
;
4525 struct ieee80211_channel
*geo_ch
;
4526 struct ieee80211_rate
*rates
;
4529 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
||
4530 priv
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
) {
4531 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4532 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
4536 channels
= kzalloc(sizeof(struct ieee80211_channel
) *
4537 priv
->channel_count
, GFP_KERNEL
);
4541 rates
= kzalloc((sizeof(struct ieee80211_rate
) * (IWL_RATE_COUNT
+ 1)),
4548 /* 5.2GHz channels start after the 2.4GHz channels */
4549 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
4550 sband
->channels
= &channels
[ARRAY_SIZE(iwl_eeprom_band_1
)];
4552 sband
->bitrates
= &rates
[IWL_FIRST_OFDM_RATE
];
4553 sband
->n_bitrates
= IWL_RATE_COUNT
- IWL_FIRST_OFDM_RATE
;
4555 iwl4965_init_ht_hw_capab(priv
, &sband
->ht_info
, IEEE80211_BAND_5GHZ
);
4557 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
4558 sband
->channels
= channels
;
4560 sband
->bitrates
= rates
;
4561 sband
->n_bitrates
= IWL_RATE_COUNT
;
4563 iwl4965_init_ht_hw_capab(priv
, &sband
->ht_info
, IEEE80211_BAND_2GHZ
);
4565 priv
->ieee_channels
= channels
;
4566 priv
->ieee_rates
= rates
;
4568 iwl4965_init_hw_rates(priv
, rates
);
4570 for (i
= 0; i
< priv
->channel_count
; i
++) {
4571 ch
= &priv
->channel_info
[i
];
4573 /* FIXME: might be removed if scan is OK */
4574 if (!is_channel_valid(ch
))
4577 if (is_channel_a_band(ch
))
4578 sband
= &priv
->bands
[IEEE80211_BAND_5GHZ
];
4580 sband
= &priv
->bands
[IEEE80211_BAND_2GHZ
];
4582 geo_ch
= &sband
->channels
[sband
->n_channels
++];
4584 geo_ch
->center_freq
= ieee80211_channel_to_frequency(ch
->channel
);
4585 geo_ch
->max_power
= ch
->max_power_avg
;
4586 geo_ch
->max_antenna_gain
= 0xff;
4587 geo_ch
->hw_value
= ch
->channel
;
4589 if (is_channel_valid(ch
)) {
4590 if (!(ch
->flags
& EEPROM_CHANNEL_IBSS
))
4591 geo_ch
->flags
|= IEEE80211_CHAN_NO_IBSS
;
4593 if (!(ch
->flags
& EEPROM_CHANNEL_ACTIVE
))
4594 geo_ch
->flags
|= IEEE80211_CHAN_PASSIVE_SCAN
;
4596 if (ch
->flags
& EEPROM_CHANNEL_RADAR
)
4597 geo_ch
->flags
|= IEEE80211_CHAN_RADAR
;
4599 if (ch
->max_power_avg
> priv
->max_channel_txpower_limit
)
4600 priv
->max_channel_txpower_limit
=
4603 geo_ch
->flags
|= IEEE80211_CHAN_DISABLED
;
4606 /* Save flags for reg domain usage */
4607 geo_ch
->orig_flags
= geo_ch
->flags
;
4609 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4610 ch
->channel
, geo_ch
->center_freq
,
4611 is_channel_a_band(ch
) ? "5.2" : "2.4",
4612 geo_ch
->flags
& IEEE80211_CHAN_DISABLED
?
4613 "restricted" : "valid",
4617 if ((priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
== 0) &&
4618 priv
->cfg
->sku
& IWL_SKU_A
) {
4619 printk(KERN_INFO DRV_NAME
4620 ": Incorrectly detected BG card as ABG. Please send "
4621 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4622 priv
->pci_dev
->device
, priv
->pci_dev
->subsystem_device
);
4623 priv
->cfg
->sku
&= ~IWL_SKU_A
;
4626 printk(KERN_INFO DRV_NAME
4627 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4628 priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
,
4629 priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
);
4631 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
4632 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
4633 &priv
->bands
[IEEE80211_BAND_2GHZ
];
4634 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
4635 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
4636 &priv
->bands
[IEEE80211_BAND_5GHZ
];
4638 set_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
4644 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4646 void iwl4965_free_geos(struct iwl_priv
*priv
)
4648 kfree(priv
->ieee_channels
);
4649 kfree(priv
->ieee_rates
);
4650 clear_bit(STATUS_GEO_CONFIGURED
, &priv
->status
);
4653 /******************************************************************************
4655 * uCode download functions
4657 ******************************************************************************/
4659 static void iwl4965_dealloc_ucode_pci(struct iwl_priv
*priv
)
4661 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
4662 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
4663 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
4664 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
4665 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
4666 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
4670 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4671 * looking at all data.
4673 static int iwl4965_verify_inst_full(struct iwl_priv
*priv
, __le32
*image
,
4681 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
4683 rc
= iwl_grab_nic_access(priv
);
4687 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, RTC_INST_LOWER_BOUND
);
4690 for (; len
> 0; len
-= sizeof(u32
), image
++) {
4691 /* read data comes through single port, auto-incr addr */
4692 /* NOTE: Use the debugless read so we don't flood kernel log
4693 * if IWL_DL_IO is set */
4694 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
4695 if (val
!= le32_to_cpu(*image
)) {
4696 IWL_ERROR("uCode INST section is invalid at "
4697 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4698 save_len
- len
, val
, le32_to_cpu(*image
));
4706 iwl_release_nic_access(priv
);
4710 ("ucode image in INSTRUCTION memory is good\n");
4717 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4718 * using sample data 100 bytes apart. If these sample points are good,
4719 * it's a pretty good bet that everything between them is good, too.
4721 static int iwl4965_verify_inst_sparse(struct iwl_priv
*priv
, __le32
*image
, u32 len
)
4728 IWL_DEBUG_INFO("ucode inst image size is %u\n", len
);
4730 rc
= iwl_grab_nic_access(priv
);
4734 for (i
= 0; i
< len
; i
+= 100, image
+= 100/sizeof(u32
)) {
4735 /* read data comes through single port, auto-incr addr */
4736 /* NOTE: Use the debugless read so we don't flood kernel log
4737 * if IWL_DL_IO is set */
4738 iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
,
4739 i
+ RTC_INST_LOWER_BOUND
);
4740 val
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
4741 if (val
!= le32_to_cpu(*image
)) {
4742 #if 0 /* Enable this if you want to see details */
4743 IWL_ERROR("uCode INST section is invalid at "
4744 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4754 iwl_release_nic_access(priv
);
4761 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
4762 * and verify its contents
4764 static int iwl4965_verify_ucode(struct iwl_priv
*priv
)
4771 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
4772 len
= priv
->ucode_boot
.len
;
4773 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
4775 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4779 /* Try initialize */
4780 image
= (__le32
*)priv
->ucode_init
.v_addr
;
4781 len
= priv
->ucode_init
.len
;
4782 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
4784 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4788 /* Try runtime/protocol */
4789 image
= (__le32
*)priv
->ucode_code
.v_addr
;
4790 len
= priv
->ucode_code
.len
;
4791 rc
= iwl4965_verify_inst_sparse(priv
, image
, len
);
4793 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4797 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4799 /* Since nothing seems to match, show first several data entries in
4800 * instruction SRAM, so maybe visual inspection will give a clue.
4801 * Selection of bootstrap image (vs. other images) is arbitrary. */
4802 image
= (__le32
*)priv
->ucode_boot
.v_addr
;
4803 len
= priv
->ucode_boot
.len
;
4804 rc
= iwl4965_verify_inst_full(priv
, image
, len
);
4809 static void iwl4965_nic_start(struct iwl_priv
*priv
)
4811 /* Remove all resets to allow NIC to operate */
4812 iwl_write32(priv
, CSR_RESET
, 0);
4817 * iwl4965_read_ucode - Read uCode images from disk file.
4819 * Copy into buffers for card to fetch via bus-mastering
4821 static int iwl4965_read_ucode(struct iwl_priv
*priv
)
4823 struct iwl4965_ucode
*ucode
;
4825 const struct firmware
*ucode_raw
;
4826 const char *name
= priv
->cfg
->fw_name
;
4829 u32 ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
4831 /* Ask kernel firmware_class module to get the boot firmware off disk.
4832 * request_firmware() is synchronous, file is in memory on return. */
4833 ret
= request_firmware(&ucode_raw
, name
, &priv
->pci_dev
->dev
);
4835 IWL_ERROR("%s firmware file req failed: Reason %d\n",
4840 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4841 name
, ucode_raw
->size
);
4843 /* Make sure that we got at least our header! */
4844 if (ucode_raw
->size
< sizeof(*ucode
)) {
4845 IWL_ERROR("File size way too small!\n");
4850 /* Data from ucode file: header followed by uCode images */
4851 ucode
= (void *)ucode_raw
->data
;
4853 ver
= le32_to_cpu(ucode
->ver
);
4854 inst_size
= le32_to_cpu(ucode
->inst_size
);
4855 data_size
= le32_to_cpu(ucode
->data_size
);
4856 init_size
= le32_to_cpu(ucode
->init_size
);
4857 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
4858 boot_size
= le32_to_cpu(ucode
->boot_size
);
4860 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver
);
4861 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
4863 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
4865 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
4867 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
4869 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
4872 /* Verify size of file vs. image size info in file's header */
4873 if (ucode_raw
->size
< sizeof(*ucode
) +
4874 inst_size
+ data_size
+ init_size
+
4875 init_data_size
+ boot_size
) {
4877 IWL_DEBUG_INFO("uCode file size %d too small\n",
4878 (int)ucode_raw
->size
);
4883 /* Verify that uCode images will fit in card's SRAM */
4884 if (inst_size
> priv
->hw_params
.max_inst_size
) {
4885 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4891 if (data_size
> priv
->hw_params
.max_data_size
) {
4892 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4897 if (init_size
> priv
->hw_params
.max_inst_size
) {
4899 ("uCode init instr len %d too large to fit in\n",
4904 if (init_data_size
> priv
->hw_params
.max_data_size
) {
4906 ("uCode init data len %d too large to fit in\n",
4911 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
4913 ("uCode boot instr len %d too large to fit in\n",
4919 /* Allocate ucode buffers for card's bus-master loading ... */
4921 /* Runtime instructions and 2 copies of data:
4922 * 1) unmodified from disk
4923 * 2) backup cache for save/restore during power-downs */
4924 priv
->ucode_code
.len
= inst_size
;
4925 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
4927 priv
->ucode_data
.len
= data_size
;
4928 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
4930 priv
->ucode_data_backup
.len
= data_size
;
4931 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
4933 /* Initialization instructions and data */
4934 if (init_size
&& init_data_size
) {
4935 priv
->ucode_init
.len
= init_size
;
4936 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
4938 priv
->ucode_init_data
.len
= init_data_size
;
4939 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
4941 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
4945 /* Bootstrap (instructions only, no data) */
4947 priv
->ucode_boot
.len
= boot_size
;
4948 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
4950 if (!priv
->ucode_boot
.v_addr
)
4954 /* Copy images into buffers for card's bus-master reads ... */
4956 /* Runtime instructions (first block of data in file) */
4957 src
= &ucode
->data
[0];
4958 len
= priv
->ucode_code
.len
;
4959 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len
);
4960 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
4961 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4962 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
4964 /* Runtime data (2nd block)
4965 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
4966 src
= &ucode
->data
[inst_size
];
4967 len
= priv
->ucode_data
.len
;
4968 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len
);
4969 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
4970 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
4972 /* Initialization instructions (3rd block) */
4974 src
= &ucode
->data
[inst_size
+ data_size
];
4975 len
= priv
->ucode_init
.len
;
4976 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4978 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
4981 /* Initialization data (4th block) */
4982 if (init_data_size
) {
4983 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
4984 len
= priv
->ucode_init_data
.len
;
4985 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
4987 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
4990 /* Bootstrap instructions (5th block) */
4991 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
4992 len
= priv
->ucode_boot
.len
;
4993 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len
);
4994 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
4996 /* We have our copies now, allow OS release its copies */
4997 release_firmware(ucode_raw
);
5001 IWL_ERROR("failed to allocate pci memory\n");
5003 iwl4965_dealloc_ucode_pci(priv
);
5006 release_firmware(ucode_raw
);
5014 * iwl4965_set_ucode_ptrs - Set uCode address location
5016 * Tell initialization uCode where to find runtime uCode.
5018 * BSM registers initially contain pointers to initialization uCode.
5019 * We need to replace them to load runtime uCode inst and data,
5020 * and to save runtime data when powering down.
5022 static int iwl4965_set_ucode_ptrs(struct iwl_priv
*priv
)
5027 unsigned long flags
;
5029 /* bits 35:4 for 4965 */
5030 pinst
= priv
->ucode_code
.p_addr
>> 4;
5031 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
5033 spin_lock_irqsave(&priv
->lock
, flags
);
5034 rc
= iwl_grab_nic_access(priv
);
5036 spin_unlock_irqrestore(&priv
->lock
, flags
);
5040 /* Tell bootstrap uCode where to find image to load */
5041 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
5042 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
5043 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
5044 priv
->ucode_data
.len
);
5046 /* Inst bytecount must be last to set up, bit 31 signals uCode
5047 * that all new ptr/size info is in place */
5048 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
5049 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
5051 iwl_release_nic_access(priv
);
5053 spin_unlock_irqrestore(&priv
->lock
, flags
);
5055 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5061 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5063 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5065 * The 4965 "initialize" ALIVE reply contains calibration data for:
5066 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
5067 * (3945 does not contain this data).
5069 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5071 static void iwl4965_init_alive_start(struct iwl_priv
*priv
)
5073 /* Check alive response for "valid" sign from uCode */
5074 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
5075 /* We had an error bringing up the hardware, so take it
5076 * all the way back down so we can try again */
5077 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5081 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5082 * This is a paranoid check, because we would not have gotten the
5083 * "initialize" alive if code weren't properly loaded. */
5084 if (iwl4965_verify_ucode(priv
)) {
5085 /* Runtime instruction load was bad;
5086 * take it all the way back down so we can try again */
5087 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5091 /* Calculate temperature */
5092 priv
->temperature
= iwl4965_get_temperature(priv
);
5094 /* Send pointers to protocol/runtime uCode image ... init code will
5095 * load and launch runtime uCode, which will send us another "Alive"
5097 IWL_DEBUG_INFO("Initialization Alive received.\n");
5098 if (iwl4965_set_ucode_ptrs(priv
)) {
5099 /* Runtime instruction load won't happen;
5100 * take it all the way back down so we can try again */
5101 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5107 queue_work(priv
->workqueue
, &priv
->restart
);
5112 * iwl4965_alive_start - called after REPLY_ALIVE notification received
5113 * from protocol/runtime uCode (initialization uCode's
5114 * Alive gets handled by iwl4965_init_alive_start()).
5116 static void iwl4965_alive_start(struct iwl_priv
*priv
)
5120 IWL_DEBUG_INFO("Runtime Alive received.\n");
5122 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
5123 /* We had an error bringing up the hardware, so take it
5124 * all the way back down so we can try again */
5125 IWL_DEBUG_INFO("Alive failed.\n");
5129 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5130 * This is a paranoid check, because we would not have gotten the
5131 * "runtime" alive if code weren't properly loaded. */
5132 if (iwl4965_verify_ucode(priv
)) {
5133 /* Runtime instruction load was bad;
5134 * take it all the way back down so we can try again */
5135 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5139 iwlcore_clear_stations_table(priv
);
5141 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
5143 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5148 /* After the ALIVE response, we can send host commands to 4965 uCode */
5149 set_bit(STATUS_ALIVE
, &priv
->status
);
5151 /* Clear out the uCode error bit if it is set */
5152 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
5154 if (iwl_is_rfkill(priv
))
5157 ieee80211_start_queues(priv
->hw
);
5159 priv
->active_rate
= priv
->rates_mask
;
5160 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
5162 if (iwl_is_associated(priv
)) {
5163 struct iwl4965_rxon_cmd
*active_rxon
=
5164 (struct iwl4965_rxon_cmd
*)(&priv
->active_rxon
);
5166 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
5167 sizeof(priv
->staging_rxon
));
5168 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
5170 /* Initialize our rx_config data */
5171 iwl4965_connection_init_rx_config(priv
);
5172 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
5175 /* Configure Bluetooth device coexistence support */
5176 iwl4965_send_bt_config(priv
);
5178 /* Configure the adapter for unassociated operation */
5179 iwl4965_commit_rxon(priv
);
5181 /* At this point, the NIC is initialized and operational */
5182 priv
->notif_missed_beacons
= 0;
5184 iwl4965_rf_kill_ct_config(priv
);
5186 iwl_leds_register(priv
);
5188 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5189 set_bit(STATUS_READY
, &priv
->status
);
5190 wake_up_interruptible(&priv
->wait_command_queue
);
5192 if (priv
->error_recovering
)
5193 iwl4965_error_recovery(priv
);
5195 iwlcore_low_level_notify(priv
, IWLCORE_START_EVT
);
5196 ieee80211_notify_mac(priv
->hw
, IEEE80211_NOTIFY_RE_ASSOC
);
5200 queue_work(priv
->workqueue
, &priv
->restart
);
5203 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
);
5205 static void __iwl4965_down(struct iwl_priv
*priv
)
5207 unsigned long flags
;
5208 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5209 struct ieee80211_conf
*conf
= NULL
;
5211 IWL_DEBUG_INFO(DRV_NAME
" is going down\n");
5213 conf
= ieee80211_get_hw_conf(priv
->hw
);
5216 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5218 iwl_leds_unregister(priv
);
5220 iwlcore_low_level_notify(priv
, IWLCORE_STOP_EVT
);
5222 iwlcore_clear_stations_table(priv
);
5224 /* Unblock any waiting calls */
5225 wake_up_interruptible_all(&priv
->wait_command_queue
);
5227 /* Wipe out the EXIT_PENDING status bit if we are not actually
5228 * exiting the module */
5230 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5232 /* stop and reset the on-board processor */
5233 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
5235 /* tell the device to stop sending interrupts */
5236 spin_lock_irqsave(&priv
->lock
, flags
);
5237 iwl4965_disable_interrupts(priv
);
5238 spin_unlock_irqrestore(&priv
->lock
, flags
);
5239 iwl_synchronize_irq(priv
);
5241 if (priv
->mac80211_registered
)
5242 ieee80211_stop_queues(priv
->hw
);
5244 /* If we have not previously called iwl4965_init() then
5245 * clear all bits but the RF Kill and SUSPEND bits and return */
5246 if (!iwl_is_init(priv
)) {
5247 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
5249 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
5251 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
5252 STATUS_GEO_CONFIGURED
|
5253 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
5258 /* ...otherwise clear out all the status bits but the RF Kill and
5259 * SUSPEND bits and continue taking the NIC down. */
5260 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
5262 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
5264 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
5265 STATUS_GEO_CONFIGURED
|
5266 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
5268 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
5271 spin_lock_irqsave(&priv
->lock
, flags
);
5272 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
5273 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
5274 spin_unlock_irqrestore(&priv
->lock
, flags
);
5276 iwl4965_hw_txq_ctx_stop(priv
);
5277 iwl4965_hw_rxq_stop(priv
);
5279 spin_lock_irqsave(&priv
->lock
, flags
);
5280 if (!iwl_grab_nic_access(priv
)) {
5281 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
5282 APMG_CLK_VAL_DMA_CLK_RQT
);
5283 iwl_release_nic_access(priv
);
5285 spin_unlock_irqrestore(&priv
->lock
, flags
);
5289 iwl4965_hw_nic_stop_master(priv
);
5290 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
5291 iwl4965_hw_nic_reset(priv
);
5292 priv
->cfg
->ops
->lib
->free_shared_mem(priv
);
5295 memset(&priv
->card_alive
, 0, sizeof(struct iwl4965_alive_resp
));
5297 if (priv
->ibss_beacon
)
5298 dev_kfree_skb(priv
->ibss_beacon
);
5299 priv
->ibss_beacon
= NULL
;
5301 /* clear out any free frames */
5302 iwl4965_clear_free_frames(priv
);
5305 static void iwl4965_down(struct iwl_priv
*priv
)
5307 mutex_lock(&priv
->mutex
);
5308 __iwl4965_down(priv
);
5309 mutex_unlock(&priv
->mutex
);
5311 iwl4965_cancel_deferred_work(priv
);
5314 #define MAX_HW_RESTARTS 5
5316 static int __iwl4965_up(struct iwl_priv
*priv
)
5321 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
5322 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5326 if (test_bit(STATUS_RF_KILL_SW
, &priv
->status
)) {
5327 IWL_WARNING("Radio disabled by SW RF kill (module "
5329 iwl_rfkill_set_hw_state(priv
);
5333 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
5334 IWL_ERROR("ucode not available for device bringup\n");
5338 /* If platform's RF_KILL switch is NOT set to KILL */
5339 if (iwl_read32(priv
, CSR_GP_CNTRL
) &
5340 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
5341 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
5343 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
5344 if (!test_bit(STATUS_IN_SUSPEND
, &priv
->status
)) {
5345 iwl_rfkill_set_hw_state(priv
);
5346 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5351 iwl_rfkill_set_hw_state(priv
);
5352 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
5354 ret
= priv
->cfg
->ops
->lib
->alloc_shared_mem(priv
);
5356 IWL_ERROR("Unable to allocate shared memory\n");
5360 ret
= priv
->cfg
->ops
->lib
->hw_nic_init(priv
);
5362 IWL_ERROR("Unable to init nic\n");
5366 /* make sure rfkill handshake bits are cleared */
5367 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5368 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
5369 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
5371 /* clear (again), then enable host interrupts */
5372 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
5373 iwl4965_enable_interrupts(priv
);
5375 /* really make sure rfkill handshake bits are cleared */
5376 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5377 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
5379 /* Copy original ucode data image from disk into backup cache.
5380 * This will be used to initialize the on-board processor's
5381 * data SRAM for a clean start when the runtime program first loads. */
5382 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
5383 priv
->ucode_data
.len
);
5385 /* We return success when we resume from suspend and rf_kill is on. */
5386 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
5389 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
5391 iwlcore_clear_stations_table(priv
);
5393 /* load bootstrap state machine,
5394 * load bootstrap program into processor's memory,
5395 * prepare to load the "initialize" uCode */
5396 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
5399 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret
);
5403 /* start card; "initialize" will load runtime ucode */
5404 iwl4965_nic_start(priv
);
5406 IWL_DEBUG_INFO(DRV_NAME
" is coming up\n");
5411 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
5412 __iwl4965_down(priv
);
5414 /* tried to restart and config the device for as long as our
5415 * patience could withstand */
5416 IWL_ERROR("Unable to initialize device after %d attempts.\n", i
);
5421 /*****************************************************************************
5423 * Workqueue callbacks
5425 *****************************************************************************/
5427 static void iwl4965_bg_init_alive_start(struct work_struct
*data
)
5429 struct iwl_priv
*priv
=
5430 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
5432 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5435 mutex_lock(&priv
->mutex
);
5436 iwl4965_init_alive_start(priv
);
5437 mutex_unlock(&priv
->mutex
);
5440 static void iwl4965_bg_alive_start(struct work_struct
*data
)
5442 struct iwl_priv
*priv
=
5443 container_of(data
, struct iwl_priv
, alive_start
.work
);
5445 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5448 mutex_lock(&priv
->mutex
);
5449 iwl4965_alive_start(priv
);
5450 mutex_unlock(&priv
->mutex
);
5453 static void iwl4965_bg_rf_kill(struct work_struct
*work
)
5455 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, rf_kill
);
5457 wake_up_interruptible(&priv
->wait_command_queue
);
5459 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5462 mutex_lock(&priv
->mutex
);
5464 if (!iwl_is_rfkill(priv
)) {
5465 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_RF_KILL
,
5466 "HW and/or SW RF Kill no longer active, restarting "
5468 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5469 queue_work(priv
->workqueue
, &priv
->restart
);
5471 /* make sure mac80211 stop sending Tx frame */
5472 if (priv
->mac80211_registered
)
5473 ieee80211_stop_queues(priv
->hw
);
5475 if (!test_bit(STATUS_RF_KILL_HW
, &priv
->status
))
5476 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5477 "disabled by SW switch\n");
5479 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5480 "Kill switch must be turned off for "
5481 "wireless networking to work.\n");
5483 iwl_rfkill_set_hw_state(priv
);
5485 mutex_unlock(&priv
->mutex
);
5488 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5490 static void iwl4965_bg_scan_check(struct work_struct
*data
)
5492 struct iwl_priv
*priv
=
5493 container_of(data
, struct iwl_priv
, scan_check
.work
);
5495 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5498 mutex_lock(&priv
->mutex
);
5499 if (test_bit(STATUS_SCANNING
, &priv
->status
) ||
5500 test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
5501 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
,
5502 "Scan completion watchdog resetting adapter (%dms)\n",
5503 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG
));
5505 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5506 iwl4965_send_scan_abort(priv
);
5508 mutex_unlock(&priv
->mutex
);
5511 static void iwl4965_bg_request_scan(struct work_struct
*data
)
5513 struct iwl_priv
*priv
=
5514 container_of(data
, struct iwl_priv
, request_scan
);
5515 struct iwl_host_cmd cmd
= {
5516 .id
= REPLY_SCAN_CMD
,
5517 .len
= sizeof(struct iwl4965_scan_cmd
),
5518 .meta
.flags
= CMD_SIZE_HUGE
,
5520 struct iwl4965_scan_cmd
*scan
;
5521 struct ieee80211_conf
*conf
= NULL
;
5523 enum ieee80211_band band
;
5527 conf
= ieee80211_get_hw_conf(priv
->hw
);
5529 mutex_lock(&priv
->mutex
);
5531 if (!iwl_is_ready(priv
)) {
5532 IWL_WARNING("request scan called when driver not ready.\n");
5536 /* Make sure the scan wasn't cancelled before this queued work
5537 * was given the chance to run... */
5538 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
5541 /* This should never be called or scheduled if there is currently
5542 * a scan active in the hardware. */
5543 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
5544 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5545 "Ignoring second request.\n");
5550 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
5551 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5555 if (test_bit(STATUS_SCAN_ABORTING
, &priv
->status
)) {
5556 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5560 if (iwl_is_rfkill(priv
)) {
5561 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5565 if (!test_bit(STATUS_READY
, &priv
->status
)) {
5566 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5570 if (!priv
->scan_bands
) {
5571 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5576 priv
->scan
= kmalloc(sizeof(struct iwl4965_scan_cmd
) +
5577 IWL_MAX_SCAN_SIZE
, GFP_KERNEL
);
5584 memset(scan
, 0, sizeof(struct iwl4965_scan_cmd
) + IWL_MAX_SCAN_SIZE
);
5586 scan
->quiet_plcp_th
= IWL_PLCP_QUIET_THRESH
;
5587 scan
->quiet_time
= IWL_ACTIVE_QUIET_TIME
;
5589 if (iwl_is_associated(priv
)) {
5592 u32 suspend_time
= 100;
5593 u32 scan_suspend_time
= 100;
5594 unsigned long flags
;
5596 IWL_DEBUG_INFO("Scanning while associated...\n");
5598 spin_lock_irqsave(&priv
->lock
, flags
);
5599 interval
= priv
->beacon_int
;
5600 spin_unlock_irqrestore(&priv
->lock
, flags
);
5602 scan
->suspend_time
= 0;
5603 scan
->max_out_time
= cpu_to_le32(200 * 1024);
5605 interval
= suspend_time
;
5607 extra
= (suspend_time
/ interval
) << 22;
5608 scan_suspend_time
= (extra
|
5609 ((suspend_time
% interval
) * 1024));
5610 scan
->suspend_time
= cpu_to_le32(scan_suspend_time
);
5611 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5612 scan_suspend_time
, interval
);
5615 /* We should add the ability for user to lock to PASSIVE ONLY */
5616 if (priv
->one_direct_scan
) {
5618 ("Kicking off one direct scan for '%s'\n",
5619 iwl4965_escape_essid(priv
->direct_ssid
,
5620 priv
->direct_ssid_len
));
5621 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
5622 scan
->direct_scan
[0].len
= priv
->direct_ssid_len
;
5623 memcpy(scan
->direct_scan
[0].ssid
,
5624 priv
->direct_ssid
, priv
->direct_ssid_len
);
5626 } else if (!iwl_is_associated(priv
) && priv
->essid_len
) {
5628 ("Kicking off one direct scan for '%s' when not associated\n",
5629 iwl4965_escape_essid(priv
->essid
, priv
->essid_len
));
5630 scan
->direct_scan
[0].id
= WLAN_EID_SSID
;
5631 scan
->direct_scan
[0].len
= priv
->essid_len
;
5632 memcpy(scan
->direct_scan
[0].ssid
, priv
->essid
, priv
->essid_len
);
5635 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5639 scan
->tx_cmd
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
;
5640 scan
->tx_cmd
.sta_id
= priv
->hw_params
.bcast_sta_id
;
5641 scan
->tx_cmd
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
5644 switch (priv
->scan_bands
) {
5646 scan
->flags
= RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
;
5647 scan
->tx_cmd
.rate_n_flags
=
5648 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP
,
5649 RATE_MCS_ANT_B_MSK
|RATE_MCS_CCK_MSK
);
5651 scan
->good_CRC_th
= 0;
5652 band
= IEEE80211_BAND_2GHZ
;
5656 scan
->tx_cmd
.rate_n_flags
=
5657 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP
,
5658 RATE_MCS_ANT_B_MSK
);
5659 scan
->good_CRC_th
= IWL_GOOD_CRC_TH
;
5660 band
= IEEE80211_BAND_5GHZ
;
5664 IWL_WARNING("Invalid scan band count\n");
5668 /* We don't build a direct scan probe request; the uCode will do
5669 * that based on the direct_mask added to each channel entry */
5670 cmd_len
= iwl4965_fill_probe_req(priv
, band
,
5671 (struct ieee80211_mgmt
*)scan
->data
,
5672 IWL_MAX_SCAN_SIZE
- sizeof(*scan
), 0);
5674 scan
->tx_cmd
.len
= cpu_to_le16(cmd_len
);
5675 /* select Rx chains */
5677 /* Force use of chains B and C (0x6) for scan Rx.
5678 * Avoid A (0x1) because of its off-channel reception on A-band.
5679 * MIMO is not used here, but value is required to make uCode happy. */
5680 scan
->rx_chain
= RXON_RX_CHAIN_DRIVER_FORCE_MSK
|
5681 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS
) |
5682 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS
) |
5683 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS
));
5685 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
)
5686 scan
->filter_flags
= RXON_FILTER_PROMISC_MSK
;
5689 scan
->channel_count
=
5690 iwl4965_get_channels_for_scan(
5691 priv
, band
, 1, /* active */
5693 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
5695 scan
->channel_count
=
5696 iwl4965_get_channels_for_scan(
5697 priv
, band
, 0, /* passive */
5699 (void *)&scan
->data
[le16_to_cpu(scan
->tx_cmd
.len
)]);
5701 scan
->filter_flags
|= (RXON_FILTER_ACCEPT_GRP_MSK
|
5702 RXON_FILTER_BCON_AWARE_MSK
);
5703 cmd
.len
+= le16_to_cpu(scan
->tx_cmd
.len
) +
5704 scan
->channel_count
* sizeof(struct iwl4965_scan_channel
);
5706 scan
->len
= cpu_to_le16(cmd
.len
);
5708 set_bit(STATUS_SCAN_HW
, &priv
->status
);
5709 ret
= iwl_send_cmd_sync(priv
, &cmd
);
5713 queue_delayed_work(priv
->workqueue
, &priv
->scan_check
,
5714 IWL_SCAN_CHECK_WATCHDOG
);
5716 mutex_unlock(&priv
->mutex
);
5720 /* inform mac80211 scan aborted */
5721 queue_work(priv
->workqueue
, &priv
->scan_completed
);
5722 mutex_unlock(&priv
->mutex
);
5725 static void iwl4965_bg_up(struct work_struct
*data
)
5727 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
5729 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5732 mutex_lock(&priv
->mutex
);
5734 mutex_unlock(&priv
->mutex
);
5737 static void iwl4965_bg_restart(struct work_struct
*data
)
5739 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
5741 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5745 queue_work(priv
->workqueue
, &priv
->up
);
5748 static void iwl4965_bg_rx_replenish(struct work_struct
*data
)
5750 struct iwl_priv
*priv
=
5751 container_of(data
, struct iwl_priv
, rx_replenish
);
5753 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5756 mutex_lock(&priv
->mutex
);
5757 iwl4965_rx_replenish(priv
);
5758 mutex_unlock(&priv
->mutex
);
5761 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5763 static void iwl4965_post_associate(struct iwl_priv
*priv
)
5765 struct ieee80211_conf
*conf
= NULL
;
5767 DECLARE_MAC_BUF(mac
);
5769 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
5770 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__
);
5774 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
5776 print_mac(mac
, priv
->active_rxon
.bssid_addr
));
5779 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5783 if (!priv
->vif
|| !priv
->is_open
)
5786 iwl4965_scan_cancel_timeout(priv
, 200);
5788 conf
= ieee80211_get_hw_conf(priv
->hw
);
5790 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
5791 iwl4965_commit_rxon(priv
);
5793 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl4965_rxon_time_cmd
));
5794 iwl4965_setup_rxon_timing(priv
);
5795 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
5796 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
5798 IWL_WARNING("REPLY_RXON_TIMING failed - "
5799 "Attempting to continue.\n");
5801 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
5803 #ifdef CONFIG_IWL4965_HT
5804 if (priv
->current_ht_config
.is_ht
)
5805 iwl4965_set_rxon_ht(priv
, &priv
->current_ht_config
);
5806 #endif /* CONFIG_IWL4965_HT*/
5807 iwl4965_set_rxon_chain(priv
);
5808 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
5810 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5811 priv
->assoc_id
, priv
->beacon_int
);
5813 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
5814 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
5816 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
5818 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
5819 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
5820 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
5822 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
5824 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
5825 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
5829 iwl4965_commit_rxon(priv
);
5831 switch (priv
->iw_mode
) {
5832 case IEEE80211_IF_TYPE_STA
:
5833 iwl4965_rate_scale_init(priv
->hw
, IWL_AP_ID
);
5836 case IEEE80211_IF_TYPE_IBSS
:
5838 /* clear out the station table */
5839 iwlcore_clear_stations_table(priv
);
5841 iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0);
5842 iwl4965_rxon_add_station(priv
, priv
->bssid
, 0);
5843 iwl4965_rate_scale_init(priv
->hw
, IWL_STA_ID
);
5844 iwl4965_send_beacon_cmd(priv
);
5849 IWL_ERROR("%s Should not be called in %d mode\n",
5850 __FUNCTION__
, priv
->iw_mode
);
5854 iwl4965_sequence_reset(priv
);
5856 /* Enable Rx differential gain and sensitivity calibrations */
5857 iwl_chain_noise_reset(priv
);
5858 priv
->start_calib
= 1;
5860 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
5861 priv
->assoc_station_added
= 1;
5863 iwl4965_activate_qos(priv
, 0);
5865 iwl_power_update_mode(priv
, 0);
5866 /* we have just associated, don't start scan too early */
5867 priv
->next_scan_jiffies
= jiffies
+ IWL_DELAY_NEXT_SCAN
;
5871 static void iwl4965_bg_post_associate(struct work_struct
*data
)
5873 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
,
5874 post_associate
.work
);
5876 mutex_lock(&priv
->mutex
);
5877 iwl4965_post_associate(priv
);
5878 mutex_unlock(&priv
->mutex
);
5882 static void iwl4965_bg_abort_scan(struct work_struct
*work
)
5884 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
, abort_scan
);
5886 if (!iwl_is_ready(priv
))
5889 mutex_lock(&priv
->mutex
);
5891 set_bit(STATUS_SCAN_ABORTING
, &priv
->status
);
5892 iwl4965_send_scan_abort(priv
);
5894 mutex_unlock(&priv
->mutex
);
5897 static int iwl4965_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
);
5899 static void iwl4965_bg_scan_completed(struct work_struct
*work
)
5901 struct iwl_priv
*priv
=
5902 container_of(work
, struct iwl_priv
, scan_completed
);
5904 IWL_DEBUG(IWL_DL_INFO
| IWL_DL_SCAN
, "SCAN complete scan\n");
5906 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
5909 if (test_bit(STATUS_CONF_PENDING
, &priv
->status
))
5910 iwl4965_mac_config(priv
->hw
, ieee80211_get_hw_conf(priv
->hw
));
5912 ieee80211_scan_completed(priv
->hw
);
5914 /* Since setting the TXPOWER may have been deferred while
5915 * performing the scan, fire one off */
5916 mutex_lock(&priv
->mutex
);
5917 iwl4965_hw_reg_send_txpower(priv
);
5918 mutex_unlock(&priv
->mutex
);
5921 /*****************************************************************************
5923 * mac80211 entry point functions
5925 *****************************************************************************/
5927 #define UCODE_READY_TIMEOUT (2 * HZ)
5929 static int iwl4965_mac_start(struct ieee80211_hw
*hw
)
5931 struct iwl_priv
*priv
= hw
->priv
;
5934 IWL_DEBUG_MAC80211("enter\n");
5936 if (pci_enable_device(priv
->pci_dev
)) {
5937 IWL_ERROR("Fail to pci_enable_device\n");
5940 pci_restore_state(priv
->pci_dev
);
5941 pci_enable_msi(priv
->pci_dev
);
5943 ret
= request_irq(priv
->pci_dev
->irq
, iwl4965_isr
, IRQF_SHARED
,
5946 IWL_ERROR("Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
5947 goto out_disable_msi
;
5950 /* we should be verifying the device is ready to be opened */
5951 mutex_lock(&priv
->mutex
);
5953 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl4965_rxon_cmd
));
5954 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5955 * ucode filename and max sizes are card-specific. */
5957 if (!priv
->ucode_code
.len
) {
5958 ret
= iwl4965_read_ucode(priv
);
5960 IWL_ERROR("Could not read microcode: %d\n", ret
);
5961 mutex_unlock(&priv
->mutex
);
5962 goto out_release_irq
;
5966 ret
= __iwl4965_up(priv
);
5968 mutex_unlock(&priv
->mutex
);
5971 goto out_release_irq
;
5973 IWL_DEBUG_INFO("Start UP work done.\n");
5975 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
5978 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5979 * mac80211 will not be run successfully. */
5980 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
5981 test_bit(STATUS_READY
, &priv
->status
),
5982 UCODE_READY_TIMEOUT
);
5984 if (!test_bit(STATUS_READY
, &priv
->status
)) {
5985 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
5986 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
5988 goto out_release_irq
;
5993 IWL_DEBUG_MAC80211("leave\n");
5997 free_irq(priv
->pci_dev
->irq
, priv
);
5999 pci_disable_msi(priv
->pci_dev
);
6000 pci_disable_device(priv
->pci_dev
);
6002 IWL_DEBUG_MAC80211("leave - failed\n");
6006 static void iwl4965_mac_stop(struct ieee80211_hw
*hw
)
6008 struct iwl_priv
*priv
= hw
->priv
;
6010 IWL_DEBUG_MAC80211("enter\n");
6012 if (!priv
->is_open
) {
6013 IWL_DEBUG_MAC80211("leave - skip\n");
6019 if (iwl_is_ready_rf(priv
)) {
6020 /* stop mac, cancel any scan request and clear
6021 * RXON_FILTER_ASSOC_MSK BIT
6023 mutex_lock(&priv
->mutex
);
6024 iwl4965_scan_cancel_timeout(priv
, 100);
6025 cancel_delayed_work(&priv
->post_associate
);
6026 mutex_unlock(&priv
->mutex
);
6031 flush_workqueue(priv
->workqueue
);
6032 free_irq(priv
->pci_dev
->irq
, priv
);
6033 pci_disable_msi(priv
->pci_dev
);
6034 pci_save_state(priv
->pci_dev
);
6035 pci_disable_device(priv
->pci_dev
);
6037 IWL_DEBUG_MAC80211("leave\n");
6040 static int iwl4965_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
6041 struct ieee80211_tx_control
*ctl
)
6043 struct iwl_priv
*priv
= hw
->priv
;
6045 IWL_DEBUG_MAC80211("enter\n");
6047 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
6048 IWL_DEBUG_MAC80211("leave - monitor\n");
6052 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
6053 ctl
->tx_rate
->bitrate
);
6055 if (iwl4965_tx_skb(priv
, skb
, ctl
))
6056 dev_kfree_skb_any(skb
);
6058 IWL_DEBUG_MAC80211("leave\n");
6062 static int iwl4965_mac_add_interface(struct ieee80211_hw
*hw
,
6063 struct ieee80211_if_init_conf
*conf
)
6065 struct iwl_priv
*priv
= hw
->priv
;
6066 unsigned long flags
;
6067 DECLARE_MAC_BUF(mac
);
6069 IWL_DEBUG_MAC80211("enter: type %d\n", conf
->type
);
6072 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6076 spin_lock_irqsave(&priv
->lock
, flags
);
6077 priv
->vif
= conf
->vif
;
6079 spin_unlock_irqrestore(&priv
->lock
, flags
);
6081 mutex_lock(&priv
->mutex
);
6083 if (conf
->mac_addr
) {
6084 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac
, conf
->mac_addr
));
6085 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
6088 if (iwl_is_ready(priv
))
6089 iwl4965_set_mode(priv
, conf
->type
);
6091 mutex_unlock(&priv
->mutex
);
6093 IWL_DEBUG_MAC80211("leave\n");
6098 * iwl4965_mac_config - mac80211 config callback
6100 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6101 * be set inappropriately and the driver currently sets the hardware up to
6102 * use it whenever needed.
6104 static int iwl4965_mac_config(struct ieee80211_hw
*hw
, struct ieee80211_conf
*conf
)
6106 struct iwl_priv
*priv
= hw
->priv
;
6107 const struct iwl_channel_info
*ch_info
;
6108 unsigned long flags
;
6111 mutex_lock(&priv
->mutex
);
6112 IWL_DEBUG_MAC80211("enter to channel %d\n", conf
->channel
->hw_value
);
6114 priv
->add_radiotap
= !!(conf
->flags
& IEEE80211_CONF_RADIOTAP
);
6116 if (!iwl_is_ready(priv
)) {
6117 IWL_DEBUG_MAC80211("leave - not ready\n");
6122 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
6123 test_bit(STATUS_SCANNING
, &priv
->status
))) {
6124 IWL_DEBUG_MAC80211("leave - scanning\n");
6125 set_bit(STATUS_CONF_PENDING
, &priv
->status
);
6126 mutex_unlock(&priv
->mutex
);
6130 spin_lock_irqsave(&priv
->lock
, flags
);
6132 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
,
6133 ieee80211_frequency_to_channel(conf
->channel
->center_freq
));
6134 if (!is_channel_valid(ch_info
)) {
6135 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6136 spin_unlock_irqrestore(&priv
->lock
, flags
);
6141 #ifdef CONFIG_IWL4965_HT
6142 /* if we are switching from ht to 2.4 clear flags
6143 * from any ht related info since 2.4 does not
6145 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != conf
->channel
->hw_value
)
6146 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6147 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
6150 priv
->staging_rxon
.flags
= 0;
6151 #endif /* CONFIG_IWL4965_HT */
6153 iwlcore_set_rxon_channel(priv
, conf
->channel
->band
,
6154 ieee80211_frequency_to_channel(conf
->channel
->center_freq
));
6156 iwl4965_set_flags_for_phymode(priv
, conf
->channel
->band
);
6158 /* The list of supported rates and rate mask can be different
6159 * for each band; since the band may have changed, reset
6160 * the rate mask to what mac80211 lists */
6161 iwl4965_set_rate(priv
);
6163 spin_unlock_irqrestore(&priv
->lock
, flags
);
6165 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6166 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
6167 iwl4965_hw_channel_switch(priv
, conf
->channel
);
6172 if (priv
->cfg
->ops
->lib
->radio_kill_sw
)
6173 priv
->cfg
->ops
->lib
->radio_kill_sw(priv
, !conf
->radio_enabled
);
6175 if (!conf
->radio_enabled
) {
6176 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6180 if (iwl_is_rfkill(priv
)) {
6181 IWL_DEBUG_MAC80211("leave - RF kill\n");
6186 iwl4965_set_rate(priv
);
6188 if (memcmp(&priv
->active_rxon
,
6189 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
6190 iwl4965_commit_rxon(priv
);
6192 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6194 IWL_DEBUG_MAC80211("leave\n");
6197 clear_bit(STATUS_CONF_PENDING
, &priv
->status
);
6198 mutex_unlock(&priv
->mutex
);
6202 static void iwl4965_config_ap(struct iwl_priv
*priv
)
6206 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
6209 /* The following should be done only at AP bring up */
6210 if ((priv
->active_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
) == 0) {
6212 /* RXON - unassoc (to set timing command) */
6213 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6214 iwl4965_commit_rxon(priv
);
6217 memset(&priv
->rxon_timing
, 0, sizeof(struct iwl4965_rxon_time_cmd
));
6218 iwl4965_setup_rxon_timing(priv
);
6219 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
6220 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
6222 IWL_WARNING("REPLY_RXON_TIMING failed - "
6223 "Attempting to continue.\n");
6225 iwl4965_set_rxon_chain(priv
);
6227 /* FIXME: what should be the assoc_id for AP? */
6228 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
6229 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
6230 priv
->staging_rxon
.flags
|=
6231 RXON_FLG_SHORT_PREAMBLE_MSK
;
6233 priv
->staging_rxon
.flags
&=
6234 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6236 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
6237 if (priv
->assoc_capability
&
6238 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
6239 priv
->staging_rxon
.flags
|=
6240 RXON_FLG_SHORT_SLOT_MSK
;
6242 priv
->staging_rxon
.flags
&=
6243 ~RXON_FLG_SHORT_SLOT_MSK
;
6245 if (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
)
6246 priv
->staging_rxon
.flags
&=
6247 ~RXON_FLG_SHORT_SLOT_MSK
;
6249 /* restore RXON assoc */
6250 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
6251 iwl4965_commit_rxon(priv
);
6252 iwl4965_activate_qos(priv
, 1);
6253 iwl4965_rxon_add_station(priv
, iwl4965_broadcast_addr
, 0);
6255 iwl4965_send_beacon_cmd(priv
);
6257 /* FIXME - we need to add code here to detect a totally new
6258 * configuration, reset the AP, unassoc, rxon timing, assoc,
6259 * clear sta table, add BCAST sta... */
6262 static int iwl4965_mac_config_interface(struct ieee80211_hw
*hw
,
6263 struct ieee80211_vif
*vif
,
6264 struct ieee80211_if_conf
*conf
)
6266 struct iwl_priv
*priv
= hw
->priv
;
6267 DECLARE_MAC_BUF(mac
);
6268 unsigned long flags
;
6274 if (priv
->vif
!= vif
) {
6275 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6279 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) &&
6280 (!conf
->beacon
|| !conf
->ssid_len
)) {
6282 ("Leaving in AP mode because HostAPD is not ready.\n");
6286 if (!iwl_is_alive(priv
))
6289 mutex_lock(&priv
->mutex
);
6292 IWL_DEBUG_MAC80211("bssid: %s\n",
6293 print_mac(mac
, conf
->bssid
));
6296 * very dubious code was here; the probe filtering flag is never set:
6298 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6299 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6302 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) {
6304 conf
->bssid
= priv
->mac_addr
;
6305 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
6306 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6307 print_mac(mac
, conf
->bssid
));
6309 if (priv
->ibss_beacon
)
6310 dev_kfree_skb(priv
->ibss_beacon
);
6312 priv
->ibss_beacon
= conf
->beacon
;
6315 if (iwl_is_rfkill(priv
))
6318 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
6319 !is_multicast_ether_addr(conf
->bssid
)) {
6320 /* If there is currently a HW scan going on in the background
6321 * then we need to cancel it else the RXON below will fail. */
6322 if (iwl4965_scan_cancel_timeout(priv
, 100)) {
6323 IWL_WARNING("Aborted scan still in progress "
6325 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6326 mutex_unlock(&priv
->mutex
);
6329 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
6331 /* TODO: Audit driver for usage of these members and see
6332 * if mac80211 deprecates them (priv->bssid looks like it
6333 * shouldn't be there, but I haven't scanned the IBSS code
6334 * to verify) - jpk */
6335 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
6337 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
6338 iwl4965_config_ap(priv
);
6340 rc
= iwl4965_commit_rxon(priv
);
6341 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
) && rc
)
6342 iwl4965_rxon_add_station(
6343 priv
, priv
->active_rxon
.bssid_addr
, 1);
6347 iwl4965_scan_cancel_timeout(priv
, 100);
6348 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6349 iwl4965_commit_rxon(priv
);
6353 spin_lock_irqsave(&priv
->lock
, flags
);
6354 if (!conf
->ssid_len
)
6355 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
6357 memcpy(priv
->essid
, conf
->ssid
, conf
->ssid_len
);
6359 priv
->essid_len
= conf
->ssid_len
;
6360 spin_unlock_irqrestore(&priv
->lock
, flags
);
6362 IWL_DEBUG_MAC80211("leave\n");
6363 mutex_unlock(&priv
->mutex
);
6368 static void iwl4965_configure_filter(struct ieee80211_hw
*hw
,
6369 unsigned int changed_flags
,
6370 unsigned int *total_flags
,
6371 int mc_count
, struct dev_addr_list
*mc_list
)
6375 * see also iwl4965_connection_init_rx_config
6380 static void iwl4965_mac_remove_interface(struct ieee80211_hw
*hw
,
6381 struct ieee80211_if_init_conf
*conf
)
6383 struct iwl_priv
*priv
= hw
->priv
;
6385 IWL_DEBUG_MAC80211("enter\n");
6387 mutex_lock(&priv
->mutex
);
6389 if (iwl_is_ready_rf(priv
)) {
6390 iwl4965_scan_cancel_timeout(priv
, 100);
6391 cancel_delayed_work(&priv
->post_associate
);
6392 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6393 iwl4965_commit_rxon(priv
);
6395 if (priv
->vif
== conf
->vif
) {
6397 memset(priv
->bssid
, 0, ETH_ALEN
);
6398 memset(priv
->essid
, 0, IW_ESSID_MAX_SIZE
);
6399 priv
->essid_len
= 0;
6401 mutex_unlock(&priv
->mutex
);
6403 IWL_DEBUG_MAC80211("leave\n");
6407 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6408 static void iwl4965_bss_info_changed(struct ieee80211_hw
*hw
,
6409 struct ieee80211_vif
*vif
,
6410 struct ieee80211_bss_conf
*bss_conf
,
6413 struct iwl_priv
*priv
= hw
->priv
;
6415 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes
);
6417 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
6418 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6419 bss_conf
->use_short_preamble
);
6420 if (bss_conf
->use_short_preamble
)
6421 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
6423 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
6426 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
6427 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf
->use_cts_prot
);
6428 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
6429 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
6431 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
6434 if (changes
& BSS_CHANGED_HT
) {
6435 IWL_DEBUG_MAC80211("HT %d\n", bss_conf
->assoc_ht
);
6436 iwl4965_ht_conf(priv
, bss_conf
);
6437 iwl4965_set_rxon_chain(priv
);
6440 if (changes
& BSS_CHANGED_ASSOC
) {
6441 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf
->assoc
);
6442 /* This should never happen as this function should
6443 * never be called from interrupt context. */
6444 if (WARN_ON_ONCE(in_interrupt()))
6446 if (bss_conf
->assoc
) {
6447 priv
->assoc_id
= bss_conf
->aid
;
6448 priv
->beacon_int
= bss_conf
->beacon_int
;
6449 priv
->timestamp
= bss_conf
->timestamp
;
6450 priv
->assoc_capability
= bss_conf
->assoc_capability
;
6451 priv
->next_scan_jiffies
= jiffies
+
6452 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
6453 mutex_lock(&priv
->mutex
);
6454 iwl4965_post_associate(priv
);
6455 mutex_unlock(&priv
->mutex
);
6458 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf
->assoc
);
6460 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
6461 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes
);
6462 iwl_send_rxon_assoc(priv
);
6467 static int iwl4965_mac_hw_scan(struct ieee80211_hw
*hw
, u8
*ssid
, size_t len
)
6470 unsigned long flags
;
6471 struct iwl_priv
*priv
= hw
->priv
;
6473 IWL_DEBUG_MAC80211("enter\n");
6475 mutex_lock(&priv
->mutex
);
6476 spin_lock_irqsave(&priv
->lock
, flags
);
6478 if (!iwl_is_ready_rf(priv
)) {
6480 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6484 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
) { /* APs don't scan */
6486 IWL_ERROR("ERROR: APs don't scan\n");
6490 /* we don't schedule scan within next_scan_jiffies period */
6491 if (priv
->next_scan_jiffies
&&
6492 time_after(priv
->next_scan_jiffies
, jiffies
)) {
6496 /* if we just finished scan ask for delay */
6497 if (priv
->last_scan_jiffies
&& time_after(priv
->last_scan_jiffies
+
6498 IWL_DELAY_NEXT_SCAN
, jiffies
)) {
6503 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6504 iwl4965_escape_essid(ssid
, len
), (int)len
);
6506 priv
->one_direct_scan
= 1;
6507 priv
->direct_ssid_len
= (u8
)
6508 min((u8
) len
, (u8
) IW_ESSID_MAX_SIZE
);
6509 memcpy(priv
->direct_ssid
, ssid
, priv
->direct_ssid_len
);
6511 priv
->one_direct_scan
= 0;
6513 rc
= iwl4965_scan_initiate(priv
);
6515 IWL_DEBUG_MAC80211("leave\n");
6518 spin_unlock_irqrestore(&priv
->lock
, flags
);
6519 mutex_unlock(&priv
->mutex
);
6524 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw
*hw
,
6525 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
6526 u32 iv32
, u16
*phase1key
)
6528 struct iwl_priv
*priv
= hw
->priv
;
6529 u8 sta_id
= IWL_INVALID_STATION
;
6530 unsigned long flags
;
6531 __le16 key_flags
= 0;
6533 DECLARE_MAC_BUF(mac
);
6535 IWL_DEBUG_MAC80211("enter\n");
6537 sta_id
= iwl_find_station(priv
, addr
);
6538 if (sta_id
== IWL_INVALID_STATION
) {
6539 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6540 print_mac(mac
, addr
));
6544 iwl4965_scan_cancel_timeout(priv
, 100);
6546 key_flags
|= (STA_KEY_FLG_TKIP
| STA_KEY_FLG_MAP_KEY_MSK
);
6547 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
6548 key_flags
&= ~STA_KEY_FLG_INVALID
;
6550 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
6551 key_flags
|= STA_KEY_MULTICAST_MSK
;
6553 spin_lock_irqsave(&priv
->sta_lock
, flags
);
6555 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
6556 priv
->stations
[sta_id
].sta
.key
.tkip_rx_tsc_byte2
= (u8
) iv32
;
6558 for (i
= 0; i
< 5; i
++)
6559 priv
->stations
[sta_id
].sta
.key
.tkip_rx_ttak
[i
] =
6560 cpu_to_le16(phase1key
[i
]);
6562 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
6563 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
6565 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
6567 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
6569 IWL_DEBUG_MAC80211("leave\n");
6572 static int iwl4965_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
6573 const u8
*local_addr
, const u8
*addr
,
6574 struct ieee80211_key_conf
*key
)
6576 struct iwl_priv
*priv
= hw
->priv
;
6577 DECLARE_MAC_BUF(mac
);
6579 u8 sta_id
= IWL_INVALID_STATION
;
6580 u8 is_default_wep_key
= 0;
6582 IWL_DEBUG_MAC80211("enter\n");
6584 if (priv
->hw_params
.sw_crypto
) {
6585 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6589 if (is_zero_ether_addr(addr
))
6590 /* only support pairwise keys */
6593 sta_id
= iwl_find_station(priv
, addr
);
6594 if (sta_id
== IWL_INVALID_STATION
) {
6595 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6596 print_mac(mac
, addr
));
6601 mutex_lock(&priv
->mutex
);
6602 iwl4965_scan_cancel_timeout(priv
, 100);
6603 mutex_unlock(&priv
->mutex
);
6605 /* If we are getting WEP group key and we didn't receive any key mapping
6606 * so far, we are in legacy wep mode (group key only), otherwise we are
6608 * In legacy wep mode, we use another host command to the uCode */
6609 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
6610 priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
6612 is_default_wep_key
= !priv
->key_mapping_key
;
6614 is_default_wep_key
= priv
->default_wep_key
;
6619 if (is_default_wep_key
)
6620 ret
= iwl_set_default_wep_key(priv
, key
);
6622 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
6624 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6627 if (is_default_wep_key
)
6628 ret
= iwl_remove_default_wep_key(priv
, key
);
6630 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
6632 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6638 IWL_DEBUG_MAC80211("leave\n");
6643 static int iwl4965_mac_conf_tx(struct ieee80211_hw
*hw
, int queue
,
6644 const struct ieee80211_tx_queue_params
*params
)
6646 struct iwl_priv
*priv
= hw
->priv
;
6647 unsigned long flags
;
6650 IWL_DEBUG_MAC80211("enter\n");
6652 if (!iwl_is_ready_rf(priv
)) {
6653 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6657 if (queue
>= AC_NUM
) {
6658 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue
);
6662 if (!priv
->qos_data
.qos_enable
) {
6663 priv
->qos_data
.qos_active
= 0;
6664 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6667 q
= AC_NUM
- 1 - queue
;
6669 spin_lock_irqsave(&priv
->lock
, flags
);
6671 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
6672 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
6673 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
6674 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
6675 cpu_to_le16((params
->txop
* 32));
6677 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
6678 priv
->qos_data
.qos_active
= 1;
6680 spin_unlock_irqrestore(&priv
->lock
, flags
);
6682 mutex_lock(&priv
->mutex
);
6683 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
6684 iwl4965_activate_qos(priv
, 1);
6685 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
6686 iwl4965_activate_qos(priv
, 0);
6688 mutex_unlock(&priv
->mutex
);
6690 IWL_DEBUG_MAC80211("leave\n");
6694 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw
*hw
,
6695 struct ieee80211_tx_queue_stats
*stats
)
6697 struct iwl_priv
*priv
= hw
->priv
;
6699 struct iwl4965_tx_queue
*txq
;
6700 struct iwl4965_queue
*q
;
6701 unsigned long flags
;
6703 IWL_DEBUG_MAC80211("enter\n");
6705 if (!iwl_is_ready_rf(priv
)) {
6706 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6710 spin_lock_irqsave(&priv
->lock
, flags
);
6712 for (i
= 0; i
< AC_NUM
; i
++) {
6713 txq
= &priv
->txq
[i
];
6715 avail
= iwl4965_queue_space(q
);
6717 stats
->data
[i
].len
= q
->n_window
- avail
;
6718 stats
->data
[i
].limit
= q
->n_window
- q
->high_mark
;
6719 stats
->data
[i
].count
= q
->n_window
;
6722 spin_unlock_irqrestore(&priv
->lock
, flags
);
6724 IWL_DEBUG_MAC80211("leave\n");
6729 static int iwl4965_mac_get_stats(struct ieee80211_hw
*hw
,
6730 struct ieee80211_low_level_stats
*stats
)
6732 IWL_DEBUG_MAC80211("enter\n");
6733 IWL_DEBUG_MAC80211("leave\n");
6738 static u64
iwl4965_mac_get_tsf(struct ieee80211_hw
*hw
)
6740 IWL_DEBUG_MAC80211("enter\n");
6741 IWL_DEBUG_MAC80211("leave\n");
6746 static void iwl4965_mac_reset_tsf(struct ieee80211_hw
*hw
)
6748 struct iwl_priv
*priv
= hw
->priv
;
6749 unsigned long flags
;
6751 mutex_lock(&priv
->mutex
);
6752 IWL_DEBUG_MAC80211("enter\n");
6754 priv
->lq_mngr
.lq_ready
= 0;
6755 #ifdef CONFIG_IWL4965_HT
6756 spin_lock_irqsave(&priv
->lock
, flags
);
6757 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
6758 spin_unlock_irqrestore(&priv
->lock
, flags
);
6759 #endif /* CONFIG_IWL4965_HT */
6761 iwlcore_reset_qos(priv
);
6763 cancel_delayed_work(&priv
->post_associate
);
6765 spin_lock_irqsave(&priv
->lock
, flags
);
6767 priv
->assoc_capability
= 0;
6768 priv
->assoc_station_added
= 0;
6770 /* new association get rid of ibss beacon skb */
6771 if (priv
->ibss_beacon
)
6772 dev_kfree_skb(priv
->ibss_beacon
);
6774 priv
->ibss_beacon
= NULL
;
6776 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
6777 priv
->timestamp
= 0;
6778 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
))
6779 priv
->beacon_int
= 0;
6781 spin_unlock_irqrestore(&priv
->lock
, flags
);
6783 if (!iwl_is_ready_rf(priv
)) {
6784 IWL_DEBUG_MAC80211("leave - not ready\n");
6785 mutex_unlock(&priv
->mutex
);
6789 /* we are restarting association process
6790 * clear RXON_FILTER_ASSOC_MSK bit
6792 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_AP
) {
6793 iwl4965_scan_cancel_timeout(priv
, 100);
6794 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
6795 iwl4965_commit_rxon(priv
);
6798 iwl_power_update_mode(priv
, 0);
6800 /* Per mac80211.h: This is only used in IBSS mode... */
6801 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
6803 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6804 mutex_unlock(&priv
->mutex
);
6808 iwl4965_set_rate(priv
);
6810 mutex_unlock(&priv
->mutex
);
6812 IWL_DEBUG_MAC80211("leave\n");
6815 static int iwl4965_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
6816 struct ieee80211_tx_control
*control
)
6818 struct iwl_priv
*priv
= hw
->priv
;
6819 unsigned long flags
;
6821 mutex_lock(&priv
->mutex
);
6822 IWL_DEBUG_MAC80211("enter\n");
6824 if (!iwl_is_ready_rf(priv
)) {
6825 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6826 mutex_unlock(&priv
->mutex
);
6830 if (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
) {
6831 IWL_DEBUG_MAC80211("leave - not IBSS\n");
6832 mutex_unlock(&priv
->mutex
);
6836 spin_lock_irqsave(&priv
->lock
, flags
);
6838 if (priv
->ibss_beacon
)
6839 dev_kfree_skb(priv
->ibss_beacon
);
6841 priv
->ibss_beacon
= skb
;
6845 IWL_DEBUG_MAC80211("leave\n");
6846 spin_unlock_irqrestore(&priv
->lock
, flags
);
6848 iwlcore_reset_qos(priv
);
6850 queue_work(priv
->workqueue
, &priv
->post_associate
.work
);
6852 mutex_unlock(&priv
->mutex
);
6857 /*****************************************************************************
6861 *****************************************************************************/
6863 #ifdef CONFIG_IWLWIFI_DEBUG
6866 * The following adds a new attribute to the sysfs representation
6867 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6868 * used for controlling the debug level.
6870 * See the level definitions in iwl for details.
6873 static ssize_t
show_debug_level(struct device_driver
*d
, char *buf
)
6875 return sprintf(buf
, "0x%08X\n", iwl_debug_level
);
6877 static ssize_t
store_debug_level(struct device_driver
*d
,
6878 const char *buf
, size_t count
)
6880 char *p
= (char *)buf
;
6883 val
= simple_strtoul(p
, &p
, 0);
6885 printk(KERN_INFO DRV_NAME
6886 ": %s is not in hex or decimal form.\n", buf
);
6888 iwl_debug_level
= val
;
6890 return strnlen(buf
, count
);
6893 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
6894 show_debug_level
, store_debug_level
);
6896 #endif /* CONFIG_IWLWIFI_DEBUG */
6899 static ssize_t
show_temperature(struct device
*d
,
6900 struct device_attribute
*attr
, char *buf
)
6902 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6904 if (!iwl_is_alive(priv
))
6907 return sprintf(buf
, "%d\n", iwl4965_hw_get_temperature(priv
));
6910 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
6912 static ssize_t
show_rs_window(struct device
*d
,
6913 struct device_attribute
*attr
,
6916 struct iwl_priv
*priv
= d
->driver_data
;
6917 return iwl4965_fill_rs_info(priv
->hw
, buf
, IWL_AP_ID
);
6919 static DEVICE_ATTR(rs_window
, S_IRUGO
, show_rs_window
, NULL
);
6921 static ssize_t
show_tx_power(struct device
*d
,
6922 struct device_attribute
*attr
, char *buf
)
6924 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6925 return sprintf(buf
, "%d\n", priv
->user_txpower_limit
);
6928 static ssize_t
store_tx_power(struct device
*d
,
6929 struct device_attribute
*attr
,
6930 const char *buf
, size_t count
)
6932 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6933 char *p
= (char *)buf
;
6936 val
= simple_strtoul(p
, &p
, 10);
6938 printk(KERN_INFO DRV_NAME
6939 ": %s is not in decimal form.\n", buf
);
6941 iwl4965_hw_reg_set_txpower(priv
, val
);
6946 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
6948 static ssize_t
show_flags(struct device
*d
,
6949 struct device_attribute
*attr
, char *buf
)
6951 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6953 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
6956 static ssize_t
store_flags(struct device
*d
,
6957 struct device_attribute
*attr
,
6958 const char *buf
, size_t count
)
6960 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6961 u32 flags
= simple_strtoul(buf
, NULL
, 0);
6963 mutex_lock(&priv
->mutex
);
6964 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
6965 /* Cancel any currently running scans... */
6966 if (iwl4965_scan_cancel_timeout(priv
, 100))
6967 IWL_WARNING("Could not cancel scan.\n");
6969 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6971 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
6972 iwl4965_commit_rxon(priv
);
6975 mutex_unlock(&priv
->mutex
);
6980 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
6982 static ssize_t
show_filter_flags(struct device
*d
,
6983 struct device_attribute
*attr
, char *buf
)
6985 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6987 return sprintf(buf
, "0x%04X\n",
6988 le32_to_cpu(priv
->active_rxon
.filter_flags
));
6991 static ssize_t
store_filter_flags(struct device
*d
,
6992 struct device_attribute
*attr
,
6993 const char *buf
, size_t count
)
6995 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
6996 u32 filter_flags
= simple_strtoul(buf
, NULL
, 0);
6998 mutex_lock(&priv
->mutex
);
6999 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
7000 /* Cancel any currently running scans... */
7001 if (iwl4965_scan_cancel_timeout(priv
, 100))
7002 IWL_WARNING("Could not cancel scan.\n");
7004 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7005 "0x%04X\n", filter_flags
);
7006 priv
->staging_rxon
.filter_flags
=
7007 cpu_to_le32(filter_flags
);
7008 iwl4965_commit_rxon(priv
);
7011 mutex_unlock(&priv
->mutex
);
7016 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
7017 store_filter_flags
);
7019 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7021 static ssize_t
show_measurement(struct device
*d
,
7022 struct device_attribute
*attr
, char *buf
)
7024 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7025 struct iwl4965_spectrum_notification measure_report
;
7026 u32 size
= sizeof(measure_report
), len
= 0, ofs
= 0;
7027 u8
*data
= (u8
*) & measure_report
;
7028 unsigned long flags
;
7030 spin_lock_irqsave(&priv
->lock
, flags
);
7031 if (!(priv
->measurement_status
& MEASUREMENT_READY
)) {
7032 spin_unlock_irqrestore(&priv
->lock
, flags
);
7035 memcpy(&measure_report
, &priv
->measure_report
, size
);
7036 priv
->measurement_status
= 0;
7037 spin_unlock_irqrestore(&priv
->lock
, flags
);
7039 while (size
&& (PAGE_SIZE
- len
)) {
7040 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
7041 PAGE_SIZE
- len
, 1);
7043 if (PAGE_SIZE
- len
)
7047 size
-= min(size
, 16U);
7053 static ssize_t
store_measurement(struct device
*d
,
7054 struct device_attribute
*attr
,
7055 const char *buf
, size_t count
)
7057 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7058 struct ieee80211_measurement_params params
= {
7059 .channel
= le16_to_cpu(priv
->active_rxon
.channel
),
7060 .start_time
= cpu_to_le64(priv
->last_tsf
),
7061 .duration
= cpu_to_le16(1),
7063 u8 type
= IWL_MEASURE_BASIC
;
7069 strncpy(buffer
, buf
, min(sizeof(buffer
), count
));
7070 channel
= simple_strtoul(p
, NULL
, 0);
7072 params
.channel
= channel
;
7075 while (*p
&& *p
!= ' ')
7078 type
= simple_strtoul(p
+ 1, NULL
, 0);
7081 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7082 "channel %d (for '%s')\n", type
, params
.channel
, buf
);
7083 iwl4965_get_measurement(priv
, ¶ms
, type
);
7088 static DEVICE_ATTR(measurement
, S_IRUSR
| S_IWUSR
,
7089 show_measurement
, store_measurement
);
7090 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7092 static ssize_t
store_retry_rate(struct device
*d
,
7093 struct device_attribute
*attr
,
7094 const char *buf
, size_t count
)
7096 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7098 priv
->retry_rate
= simple_strtoul(buf
, NULL
, 0);
7099 if (priv
->retry_rate
<= 0)
7100 priv
->retry_rate
= 1;
7105 static ssize_t
show_retry_rate(struct device
*d
,
7106 struct device_attribute
*attr
, char *buf
)
7108 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7109 return sprintf(buf
, "%d", priv
->retry_rate
);
7112 static DEVICE_ATTR(retry_rate
, S_IWUSR
| S_IRUSR
, show_retry_rate
,
7115 static ssize_t
store_power_level(struct device
*d
,
7116 struct device_attribute
*attr
,
7117 const char *buf
, size_t count
)
7119 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7123 mode
= simple_strtoul(buf
, NULL
, 0);
7124 mutex_lock(&priv
->mutex
);
7126 if (!iwl_is_ready(priv
)) {
7131 rc
= iwl_power_set_user_mode(priv
, mode
);
7133 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7139 mutex_unlock(&priv
->mutex
);
7143 #define MAX_WX_STRING 80
7145 /* Values are in microsecond */
7146 static const s32 timeout_duration
[] = {
7153 static const s32 period_duration
[] = {
7161 static ssize_t
show_power_level(struct device
*d
,
7162 struct device_attribute
*attr
, char *buf
)
7164 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7165 int level
= priv
->power_data
.power_mode
;
7168 p
+= sprintf(p
, "%d ", level
);
7170 case IWL_POWER_MODE_CAM
:
7172 p
+= sprintf(p
, "(AC)");
7174 case IWL_POWER_BATTERY
:
7175 p
+= sprintf(p
, "(BATTERY)");
7179 "(Timeout %dms, Period %dms)",
7180 timeout_duration
[level
- 1] / 1000,
7181 period_duration
[level
- 1] / 1000);
7184 if (!(priv->power_mode & IWL_POWER_ENABLED))
7185 p += sprintf(p, " OFF\n");
7187 p += sprintf(p, " \n");
7189 p
+= sprintf(p
, " \n");
7190 return (p
- buf
+ 1);
7193 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
7196 static ssize_t
show_channels(struct device
*d
,
7197 struct device_attribute
*attr
, char *buf
)
7199 /* all this shit doesn't belong into sysfs anyway */
7203 static DEVICE_ATTR(channels
, S_IRUSR
, show_channels
, NULL
);
7205 static ssize_t
show_statistics(struct device
*d
,
7206 struct device_attribute
*attr
, char *buf
)
7208 struct iwl_priv
*priv
= dev_get_drvdata(d
);
7209 u32 size
= sizeof(struct iwl4965_notif_statistics
);
7210 u32 len
= 0, ofs
= 0;
7211 u8
*data
= (u8
*) & priv
->statistics
;
7214 if (!iwl_is_alive(priv
))
7217 mutex_lock(&priv
->mutex
);
7218 rc
= iwl_send_statistics_request(priv
, 0);
7219 mutex_unlock(&priv
->mutex
);
7223 "Error sending statistics request: 0x%08X\n", rc
);
7227 while (size
&& (PAGE_SIZE
- len
)) {
7228 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
7229 PAGE_SIZE
- len
, 1);
7231 if (PAGE_SIZE
- len
)
7235 size
-= min(size
, 16U);
7241 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
7243 static ssize_t
show_status(struct device
*d
,
7244 struct device_attribute
*attr
, char *buf
)
7246 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
7247 if (!iwl_is_alive(priv
))
7249 return sprintf(buf
, "0x%08x\n", (int)priv
->status
);
7252 static DEVICE_ATTR(status
, S_IRUGO
, show_status
, NULL
);
7254 static ssize_t
dump_error_log(struct device
*d
,
7255 struct device_attribute
*attr
,
7256 const char *buf
, size_t count
)
7258 char *p
= (char *)buf
;
7261 iwl4965_dump_nic_error_log((struct iwl_priv
*)d
->driver_data
);
7263 return strnlen(buf
, count
);
7266 static DEVICE_ATTR(dump_errors
, S_IWUSR
, NULL
, dump_error_log
);
7268 static ssize_t
dump_event_log(struct device
*d
,
7269 struct device_attribute
*attr
,
7270 const char *buf
, size_t count
)
7272 char *p
= (char *)buf
;
7275 iwl4965_dump_nic_event_log((struct iwl_priv
*)d
->driver_data
);
7277 return strnlen(buf
, count
);
7280 static DEVICE_ATTR(dump_events
, S_IWUSR
, NULL
, dump_event_log
);
7282 /*****************************************************************************
7284 * driver setup and teardown
7286 *****************************************************************************/
7288 static void iwl4965_setup_deferred_work(struct iwl_priv
*priv
)
7290 priv
->workqueue
= create_workqueue(DRV_NAME
);
7292 init_waitqueue_head(&priv
->wait_command_queue
);
7294 INIT_WORK(&priv
->up
, iwl4965_bg_up
);
7295 INIT_WORK(&priv
->restart
, iwl4965_bg_restart
);
7296 INIT_WORK(&priv
->rx_replenish
, iwl4965_bg_rx_replenish
);
7297 INIT_WORK(&priv
->scan_completed
, iwl4965_bg_scan_completed
);
7298 INIT_WORK(&priv
->request_scan
, iwl4965_bg_request_scan
);
7299 INIT_WORK(&priv
->abort_scan
, iwl4965_bg_abort_scan
);
7300 INIT_WORK(&priv
->rf_kill
, iwl4965_bg_rf_kill
);
7301 INIT_WORK(&priv
->beacon_update
, iwl4965_bg_beacon_update
);
7302 INIT_DELAYED_WORK(&priv
->post_associate
, iwl4965_bg_post_associate
);
7303 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl4965_bg_init_alive_start
);
7304 INIT_DELAYED_WORK(&priv
->alive_start
, iwl4965_bg_alive_start
);
7305 INIT_DELAYED_WORK(&priv
->scan_check
, iwl4965_bg_scan_check
);
7307 iwl4965_hw_setup_deferred_work(priv
);
7309 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
7310 iwl4965_irq_tasklet
, (unsigned long)priv
);
7313 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
)
7315 iwl4965_hw_cancel_deferred_work(priv
);
7317 cancel_delayed_work_sync(&priv
->init_alive_start
);
7318 cancel_delayed_work(&priv
->scan_check
);
7319 cancel_delayed_work(&priv
->alive_start
);
7320 cancel_delayed_work(&priv
->post_associate
);
7321 cancel_work_sync(&priv
->beacon_update
);
7324 static struct attribute
*iwl4965_sysfs_entries
[] = {
7325 &dev_attr_channels
.attr
,
7326 &dev_attr_dump_errors
.attr
,
7327 &dev_attr_dump_events
.attr
,
7328 &dev_attr_flags
.attr
,
7329 &dev_attr_filter_flags
.attr
,
7330 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7331 &dev_attr_measurement
.attr
,
7333 &dev_attr_power_level
.attr
,
7334 &dev_attr_retry_rate
.attr
,
7335 &dev_attr_rs_window
.attr
,
7336 &dev_attr_statistics
.attr
,
7337 &dev_attr_status
.attr
,
7338 &dev_attr_temperature
.attr
,
7339 &dev_attr_tx_power
.attr
,
7344 static struct attribute_group iwl4965_attribute_group
= {
7345 .name
= NULL
, /* put in device directory */
7346 .attrs
= iwl4965_sysfs_entries
,
7349 static struct ieee80211_ops iwl4965_hw_ops
= {
7350 .tx
= iwl4965_mac_tx
,
7351 .start
= iwl4965_mac_start
,
7352 .stop
= iwl4965_mac_stop
,
7353 .add_interface
= iwl4965_mac_add_interface
,
7354 .remove_interface
= iwl4965_mac_remove_interface
,
7355 .config
= iwl4965_mac_config
,
7356 .config_interface
= iwl4965_mac_config_interface
,
7357 .configure_filter
= iwl4965_configure_filter
,
7358 .set_key
= iwl4965_mac_set_key
,
7359 .update_tkip_key
= iwl4965_mac_update_tkip_key
,
7360 .get_stats
= iwl4965_mac_get_stats
,
7361 .get_tx_stats
= iwl4965_mac_get_tx_stats
,
7362 .conf_tx
= iwl4965_mac_conf_tx
,
7363 .get_tsf
= iwl4965_mac_get_tsf
,
7364 .reset_tsf
= iwl4965_mac_reset_tsf
,
7365 .beacon_update
= iwl4965_mac_beacon_update
,
7366 .bss_info_changed
= iwl4965_bss_info_changed
,
7367 #ifdef CONFIG_IWL4965_HT
7368 .ampdu_action
= iwl4965_mac_ampdu_action
,
7369 #endif /* CONFIG_IWL4965_HT */
7370 .hw_scan
= iwl4965_mac_hw_scan
7373 static int iwl4965_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
7376 struct iwl_priv
*priv
;
7377 struct ieee80211_hw
*hw
;
7378 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
7379 unsigned long flags
;
7380 DECLARE_MAC_BUF(mac
);
7382 /************************
7383 * 1. Allocating HW data
7384 ************************/
7386 /* Disabling hardware scan means that mac80211 will perform scans
7387 * "the hard way", rather than using device's scan. */
7388 if (cfg
->mod_params
->disable_hw_scan
) {
7389 IWL_DEBUG_INFO("Disabling hw_scan\n");
7390 iwl4965_hw_ops
.hw_scan
= NULL
;
7393 hw
= iwl_alloc_all(cfg
, &iwl4965_hw_ops
);
7399 /* At this point both hw and priv are allocated. */
7401 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
7403 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7405 priv
->pci_dev
= pdev
;
7407 #ifdef CONFIG_IWLWIFI_DEBUG
7408 iwl_debug_level
= priv
->cfg
->mod_params
->debug
;
7409 atomic_set(&priv
->restrict_refcnt
, 0);
7412 /**************************
7413 * 2. Initializing PCI bus
7414 **************************/
7415 if (pci_enable_device(pdev
)) {
7417 goto out_ieee80211_free_hw
;
7420 pci_set_master(pdev
);
7422 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
7424 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
7426 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
7428 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
7429 /* both attempts failed: */
7431 printk(KERN_WARNING
"%s: No suitable DMA available.\n",
7433 goto out_pci_disable_device
;
7437 err
= pci_request_regions(pdev
, DRV_NAME
);
7439 goto out_pci_disable_device
;
7441 pci_set_drvdata(pdev
, priv
);
7443 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7444 * PCI Tx retries from interfering with C3 CPU state */
7445 pci_write_config_byte(pdev
, 0x41, 0x00);
7447 /***********************
7448 * 3. Read REV register
7449 ***********************/
7450 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
7451 if (!priv
->hw_base
) {
7453 goto out_pci_release_regions
;
7456 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7457 (unsigned long long) pci_resource_len(pdev
, 0));
7458 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv
->hw_base
);
7460 iwl_hw_detect(priv
);
7461 printk(KERN_INFO DRV_NAME
7462 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
7463 priv
->cfg
->name
, priv
->hw_rev
);
7466 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
7468 IWL_DEBUG_INFO("Failed to init APMG\n");
7474 /* Read the EEPROM */
7475 err
= iwl_eeprom_init(priv
);
7477 IWL_ERROR("Unable to init EEPROM\n");
7480 err
= iwl_eeprom_check_version(priv
);
7484 /* MAC Address location in EEPROM same for 3945/4965 */
7485 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
7486 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac
, priv
->mac_addr
));
7487 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
7489 /************************
7490 * 5. Setup HW constants
7491 ************************/
7492 /* Device-specific setup */
7493 if (priv
->cfg
->ops
->lib
->set_hw_params(priv
)) {
7494 IWL_ERROR("failed to set hw parameters\n");
7495 goto out_free_eeprom
;
7498 /*******************
7500 *******************/
7502 err
= iwl_setup(priv
);
7504 goto out_free_eeprom
;
7505 /* At this point both hw and priv are initialized. */
7507 /**********************************
7508 * 7. Initialize module parameters
7509 **********************************/
7511 /* Disable radio (SW RF KILL) via parameter when loading driver */
7512 if (priv
->cfg
->mod_params
->disable
) {
7513 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
7514 IWL_DEBUG_INFO("Radio disabled.\n");
7517 if (priv
->cfg
->mod_params
->enable_qos
)
7518 priv
->qos_data
.qos_enable
= 1;
7520 /********************
7522 ********************/
7523 spin_lock_irqsave(&priv
->lock
, flags
);
7524 iwl4965_disable_interrupts(priv
);
7525 spin_unlock_irqrestore(&priv
->lock
, flags
);
7527 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
7529 IWL_ERROR("failed to create sysfs device attributes\n");
7530 goto out_free_eeprom
;
7533 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
7535 IWL_ERROR("failed to create debugfs files\n");
7536 goto out_remove_sysfs
;
7539 iwl4965_setup_deferred_work(priv
);
7540 iwl4965_setup_rx_handlers(priv
);
7542 /********************
7544 ********************/
7545 pci_save_state(pdev
);
7546 pci_disable_device(pdev
);
7548 /* notify iwlcore to init */
7549 iwlcore_low_level_notify(priv
, IWLCORE_INIT_EVT
);
7553 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
7555 iwl_eeprom_free(priv
);
7557 pci_iounmap(pdev
, priv
->hw_base
);
7558 out_pci_release_regions
:
7559 pci_release_regions(pdev
);
7560 pci_set_drvdata(pdev
, NULL
);
7561 out_pci_disable_device
:
7562 pci_disable_device(pdev
);
7563 out_ieee80211_free_hw
:
7564 ieee80211_free_hw(priv
->hw
);
7569 static void __devexit
iwl4965_pci_remove(struct pci_dev
*pdev
)
7571 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
7572 struct list_head
*p
, *q
;
7574 unsigned long flags
;
7579 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7581 if (priv
->mac80211_registered
) {
7582 ieee80211_unregister_hw(priv
->hw
);
7583 priv
->mac80211_registered
= 0;
7586 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
7590 /* make sure we flush any pending irq or
7591 * tasklet for the driver
7593 spin_lock_irqsave(&priv
->lock
, flags
);
7594 iwl4965_disable_interrupts(priv
);
7595 spin_unlock_irqrestore(&priv
->lock
, flags
);
7597 iwl_synchronize_irq(priv
);
7599 /* Free MAC hash list for ADHOC */
7600 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++) {
7601 list_for_each_safe(p
, q
, &priv
->ibss_mac_hash
[i
]) {
7603 kfree(list_entry(p
, struct iwl4965_ibss_seq
, list
));
7607 iwlcore_low_level_notify(priv
, IWLCORE_REMOVE_EVT
);
7608 iwl_dbgfs_unregister(priv
);
7609 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl4965_attribute_group
);
7611 iwl4965_dealloc_ucode_pci(priv
);
7614 iwl4965_rx_queue_free(priv
, &priv
->rxq
);
7615 iwl4965_hw_txq_ctx_free(priv
);
7617 iwlcore_clear_stations_table(priv
);
7618 iwl_eeprom_free(priv
);
7621 /*netif_stop_queue(dev); */
7622 flush_workqueue(priv
->workqueue
);
7624 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7625 * priv->workqueue... so we can't take down the workqueue
7627 destroy_workqueue(priv
->workqueue
);
7628 priv
->workqueue
= NULL
;
7630 pci_iounmap(pdev
, priv
->hw_base
);
7631 pci_release_regions(pdev
);
7632 pci_disable_device(pdev
);
7633 pci_set_drvdata(pdev
, NULL
);
7635 iwl_free_channel_map(priv
);
7636 iwl4965_free_geos(priv
);
7638 if (priv
->ibss_beacon
)
7639 dev_kfree_skb(priv
->ibss_beacon
);
7641 ieee80211_free_hw(priv
->hw
);
7646 static int iwl4965_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
7648 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
7650 if (priv
->is_open
) {
7651 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
7652 iwl4965_mac_stop(priv
->hw
);
7656 pci_set_power_state(pdev
, PCI_D3hot
);
7661 static int iwl4965_pci_resume(struct pci_dev
*pdev
)
7663 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
7665 pci_set_power_state(pdev
, PCI_D0
);
7668 iwl4965_mac_start(priv
->hw
);
7670 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
7674 #endif /* CONFIG_PM */
7676 /*****************************************************************************
7678 * driver and module entry point
7680 *****************************************************************************/
7682 /* Hardware specific file defines the PCI IDs table for that hardware module */
7683 static struct pci_device_id iwl_hw_card_ids
[] = {
7684 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
7685 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
7688 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
7690 static struct pci_driver iwl_driver
= {
7692 .id_table
= iwl_hw_card_ids
,
7693 .probe
= iwl4965_pci_probe
,
7694 .remove
= __devexit_p(iwl4965_pci_remove
),
7696 .suspend
= iwl4965_pci_suspend
,
7697 .resume
= iwl4965_pci_resume
,
7701 static int __init
iwl4965_init(void)
7705 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
7706 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
7708 ret
= iwl4965_rate_control_register();
7710 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret
);
7714 ret
= pci_register_driver(&iwl_driver
);
7716 IWL_ERROR("Unable to initialize PCI module\n");
7717 goto error_register
;
7719 #ifdef CONFIG_IWLWIFI_DEBUG
7720 ret
= driver_create_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
7722 IWL_ERROR("Unable to create driver sysfs file\n");
7729 #ifdef CONFIG_IWLWIFI_DEBUG
7731 pci_unregister_driver(&iwl_driver
);
7734 iwl4965_rate_control_unregister();
7738 static void __exit
iwl4965_exit(void)
7740 #ifdef CONFIG_IWLWIFI_DEBUG
7741 driver_remove_file(&iwl_driver
.driver
, &driver_attr_debug_level
);
7743 pci_unregister_driver(&iwl_driver
);
7744 iwl4965_rate_control_unregister();
7747 module_exit(iwl4965_exit
);
7748 module_init(iwl4965_init
);