1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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 * Intel Linux Wireless <ilw@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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/mac80211.h>
45 #include <asm/div64.h>
47 #define DRV_NAME "iwlagn"
49 #include "iwl-eeprom.h"
53 #include "iwl-helpers.h"
55 #include "iwl-calib.h"
58 /******************************************************************************
62 ******************************************************************************/
65 * module name, copyright, version, etc.
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
84 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
85 MODULE_VERSION(DRV_VERSION
);
86 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
95 /**************************************************************/
98 * iwl_commit_rxon - commit staging_rxon to hardware
100 * The RXON command in staging_rxon is committed to the hardware and
101 * the active_rxon structure is updated with the new data. This
102 * function correctly transitions out of the RXON_ASSOC_MSK state if
103 * a HW tune is required based on the RXON structure changes.
105 static int iwl_commit_rxon(struct iwl_priv
*priv
)
107 /* cast away the const for active_rxon in this function */
108 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
111 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
113 if (!iwl_is_alive(priv
))
116 /* always get timestamp with Rx frame */
117 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
118 /* allow CTS-to-self if possible. this is relevant only for
119 * 5000, but will not damage 4965 */
120 priv
->staging_rxon
.flags
|= RXON_FLG_SELF_CTS_EN
;
122 ret
= iwl_check_rxon_cmd(priv
);
124 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
128 /* If we don't need to send a full RXON, we can use
129 * iwl_rxon_assoc_cmd which is used to reconfigure filter
130 * and other flags for the current radio configuration. */
131 if (!iwl_full_rxon_required(priv
)) {
132 ret
= iwl_send_rxon_assoc(priv
);
134 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
138 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
142 /* station table will be cleared */
143 priv
->assoc_station_added
= 0;
145 /* If we are currently associated and the new config requires
146 * an RXON_ASSOC and the new config wants the associated mask enabled,
147 * we must clear the associated from the active configuration
148 * before we apply the new config */
149 if (iwl_is_associated(priv
) && new_assoc
) {
150 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
151 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
153 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
154 sizeof(struct iwl_rxon_cmd
),
157 /* If the mask clearing failed then we set
158 * active_rxon back to what it was previously */
160 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
161 IWL_ERR(priv
, "Error clearing ASSOC_MSK (%d)\n", ret
);
166 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
167 "* with%s RXON_FILTER_ASSOC_MSK\n"
170 (new_assoc
? "" : "out"),
171 le16_to_cpu(priv
->staging_rxon
.channel
),
172 priv
->staging_rxon
.bssid_addr
);
174 iwl_set_rxon_hwcrypto(priv
, !priv
->hw_params
.sw_crypto
);
176 /* Apply the new configuration
177 * RXON unassoc clears the station table in uCode, send it before
178 * we add the bcast station. If assoc bit is set, we will send RXON
179 * after having added the bcast and bssid station.
182 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
183 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
185 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
188 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
191 iwl_clear_stations_table(priv
);
193 if (!priv
->error_recovering
)
194 priv
->start_calib
= 0;
196 /* Add the broadcast address so we can send broadcast frames */
197 if (iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0) ==
198 IWL_INVALID_STATION
) {
199 IWL_ERR(priv
, "Error adding BROADCAST address for transmit.\n");
203 /* If we have set the ASSOC_MSK and we are in BSS mode then
204 * add the IWL_AP_ID to the station rate table */
206 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
207 ret
= iwl_rxon_add_station(priv
,
208 priv
->active_rxon
.bssid_addr
, 1);
209 if (ret
== IWL_INVALID_STATION
) {
211 "Error adding AP address for TX.\n");
214 priv
->assoc_station_added
= 1;
215 if (priv
->default_wep_key
&&
216 iwl_send_static_wepkey_cmd(priv
, 0))
218 "Could not send WEP static key.\n");
221 /* Apply the new configuration
222 * RXON assoc doesn't clear the station table in uCode,
224 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
225 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
227 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
230 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
233 iwl_init_sensitivity(priv
);
235 /* If we issue a new RXON command which required a tune then we must
236 * send a new TXPOWER command or we won't be able to Tx any frames */
237 ret
= iwl_set_tx_power(priv
, priv
->tx_power_user_lmt
, true);
239 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
246 void iwl_update_chain_flags(struct iwl_priv
*priv
)
249 iwl_set_rxon_chain(priv
);
250 iwl_commit_rxon(priv
);
253 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
255 struct list_head
*element
;
257 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
260 while (!list_empty(&priv
->free_frames
)) {
261 element
= priv
->free_frames
.next
;
263 kfree(list_entry(element
, struct iwl_frame
, list
));
264 priv
->frames_count
--;
267 if (priv
->frames_count
) {
268 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
270 priv
->frames_count
= 0;
274 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
276 struct iwl_frame
*frame
;
277 struct list_head
*element
;
278 if (list_empty(&priv
->free_frames
)) {
279 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
281 IWL_ERR(priv
, "Could not allocate frame!\n");
285 priv
->frames_count
++;
289 element
= priv
->free_frames
.next
;
291 return list_entry(element
, struct iwl_frame
, list
);
294 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
296 memset(frame
, 0, sizeof(*frame
));
297 list_add(&frame
->list
, &priv
->free_frames
);
300 static unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
301 struct ieee80211_hdr
*hdr
,
304 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
305 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
306 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
309 if (priv
->ibss_beacon
->len
> left
)
312 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
314 return priv
->ibss_beacon
->len
;
317 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
318 struct iwl_frame
*frame
, u8 rate
)
320 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
321 unsigned int frame_size
;
323 tx_beacon_cmd
= &frame
->u
.beacon
;
324 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
326 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
327 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
329 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
330 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
332 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
333 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
335 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
336 tx_beacon_cmd
->tx
.rate_n_flags
=
337 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
339 tx_beacon_cmd
->tx
.rate_n_flags
=
340 iwl_hw_set_rate_n_flags(rate
, 0);
342 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
344 TX_CMD_FLG_STA_RATE_MSK
;
346 return sizeof(*tx_beacon_cmd
) + frame_size
;
348 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
350 struct iwl_frame
*frame
;
351 unsigned int frame_size
;
355 frame
= iwl_get_free_frame(priv
);
358 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
363 rate
= iwl_rate_get_lowest_plcp(priv
);
365 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
367 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
370 iwl_free_frame(priv
, frame
);
375 static inline dma_addr_t
iwl_tfd_tb_get_addr(struct iwl_tfd
*tfd
, u8 idx
)
377 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
379 dma_addr_t addr
= get_unaligned_le32(&tb
->lo
);
380 if (sizeof(dma_addr_t
) > sizeof(u32
))
382 ((dma_addr_t
)(le16_to_cpu(tb
->hi_n_len
) & 0xF) << 16) << 16;
387 static inline u16
iwl_tfd_tb_get_len(struct iwl_tfd
*tfd
, u8 idx
)
389 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
391 return le16_to_cpu(tb
->hi_n_len
) >> 4;
394 static inline void iwl_tfd_set_tb(struct iwl_tfd
*tfd
, u8 idx
,
395 dma_addr_t addr
, u16 len
)
397 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
398 u16 hi_n_len
= len
<< 4;
400 put_unaligned_le32(addr
, &tb
->lo
);
401 if (sizeof(dma_addr_t
) > sizeof(u32
))
402 hi_n_len
|= ((addr
>> 16) >> 16) & 0xF;
404 tb
->hi_n_len
= cpu_to_le16(hi_n_len
);
406 tfd
->num_tbs
= idx
+ 1;
409 static inline u8
iwl_tfd_get_num_tbs(struct iwl_tfd
*tfd
)
411 return tfd
->num_tbs
& 0x1f;
415 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
416 * @priv - driver private data
419 * Does NOT advance any TFD circular buffer read/write indexes
420 * Does NOT free the TFD itself (which is within circular buffer)
422 void iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
424 struct iwl_tfd
*tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
426 struct pci_dev
*dev
= priv
->pci_dev
;
427 int index
= txq
->q
.read_ptr
;
431 tfd
= &tfd_tmp
[index
];
433 /* Sanity check on number of chunks */
434 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
436 if (num_tbs
>= IWL_NUM_OF_TBS
) {
437 IWL_ERR(priv
, "Too many chunks: %i\n", num_tbs
);
438 /* @todo issue fatal error, it is quite serious situation */
444 pci_unmap_single(dev
,
445 pci_unmap_addr(&txq
->cmd
[index
]->meta
, mapping
),
446 pci_unmap_len(&txq
->cmd
[index
]->meta
, len
),
449 /* Unmap chunks, if any. */
450 for (i
= 1; i
< num_tbs
; i
++) {
451 pci_unmap_single(dev
, iwl_tfd_tb_get_addr(tfd
, i
),
452 iwl_tfd_tb_get_len(tfd
, i
), PCI_DMA_TODEVICE
);
455 dev_kfree_skb(txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1]);
456 txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1] = NULL
;
461 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
462 struct iwl_tx_queue
*txq
,
463 dma_addr_t addr
, u16 len
,
467 struct iwl_tfd
*tfd
, *tfd_tmp
;
471 tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
472 tfd
= &tfd_tmp
[q
->write_ptr
];
475 memset(tfd
, 0, sizeof(*tfd
));
477 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
479 /* Each TFD can point to a maximum 20 Tx buffers */
480 if (num_tbs
>= IWL_NUM_OF_TBS
) {
481 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
486 BUG_ON(addr
& ~DMA_BIT_MASK(36));
487 if (unlikely(addr
& ~IWL_TX_DMA_MASK
))
488 IWL_ERR(priv
, "Unaligned address = %llx\n",
489 (unsigned long long)addr
);
491 iwl_tfd_set_tb(tfd
, num_tbs
, addr
, len
);
497 * Tell nic where to find circular buffer of Tx Frame Descriptors for
498 * given Tx queue, and enable the DMA channel used for that queue.
500 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
501 * channels supported in hardware.
503 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
,
504 struct iwl_tx_queue
*txq
)
508 int txq_id
= txq
->q
.id
;
510 spin_lock_irqsave(&priv
->lock
, flags
);
511 ret
= iwl_grab_nic_access(priv
);
513 spin_unlock_irqrestore(&priv
->lock
, flags
);
517 /* Circular buffer (TFD queue in DRAM) physical base address */
518 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
519 txq
->q
.dma_addr
>> 8);
521 iwl_release_nic_access(priv
);
522 spin_unlock_irqrestore(&priv
->lock
, flags
);
528 /******************************************************************************
530 * Misc. internal state and helper functions
532 ******************************************************************************/
534 static void iwl_ht_conf(struct iwl_priv
*priv
,
535 struct ieee80211_bss_conf
*bss_conf
)
537 struct ieee80211_sta_ht_cap
*ht_conf
;
538 struct iwl_ht_info
*iwl_conf
= &priv
->current_ht_config
;
539 struct ieee80211_sta
*sta
;
541 IWL_DEBUG_MAC80211(priv
, "enter: \n");
543 if (!iwl_conf
->is_ht
)
548 * It is totally wrong to base global information on something
549 * that is valid only when associated, alas, this driver works
550 * that way and I don't know how to fix it.
554 sta
= ieee80211_find_sta(priv
->hw
, priv
->bssid
);
559 ht_conf
= &sta
->ht_cap
;
561 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_20
)
562 iwl_conf
->sgf
|= HT_SHORT_GI_20MHZ
;
563 if (ht_conf
->cap
& IEEE80211_HT_CAP_SGI_40
)
564 iwl_conf
->sgf
|= HT_SHORT_GI_40MHZ
;
566 iwl_conf
->is_green_field
= !!(ht_conf
->cap
& IEEE80211_HT_CAP_GRN_FLD
);
567 iwl_conf
->max_amsdu_size
=
568 !!(ht_conf
->cap
& IEEE80211_HT_CAP_MAX_AMSDU
);
570 iwl_conf
->supported_chan_width
=
571 !!(ht_conf
->cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
);
574 * XXX: The HT configuration needs to be moved into iwl_mac_config()
575 * to be done there correctly.
578 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
579 if (conf_is_ht40_minus(&priv
->hw
->conf
))
580 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
581 else if (conf_is_ht40_plus(&priv
->hw
->conf
))
582 iwl_conf
->extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
584 /* If no above or below channel supplied disable FAT channel */
585 if (iwl_conf
->extension_chan_offset
!= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
&&
586 iwl_conf
->extension_chan_offset
!= IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
587 iwl_conf
->supported_chan_width
= 0;
589 iwl_conf
->sm_ps
= (u8
)((ht_conf
->cap
& IEEE80211_HT_CAP_SM_PS
) >> 2);
591 memcpy(&iwl_conf
->mcs
, &ht_conf
->mcs
, 16);
593 iwl_conf
->tx_chan_width
= iwl_conf
->supported_chan_width
!= 0;
594 iwl_conf
->ht_protection
=
595 bss_conf
->ht
.operation_mode
& IEEE80211_HT_OP_MODE_PROTECTION
;
596 iwl_conf
->non_GF_STA_present
=
597 !!(bss_conf
->ht
.operation_mode
& IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
601 IWL_DEBUG_MAC80211(priv
, "leave\n");
607 static void iwl_activate_qos(struct iwl_priv
*priv
, u8 force
)
609 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
612 priv
->qos_data
.def_qos_parm
.qos_flags
= 0;
614 if (priv
->qos_data
.qos_cap
.q_AP
.queue_request
&&
615 !priv
->qos_data
.qos_cap
.q_AP
.txop_request
)
616 priv
->qos_data
.def_qos_parm
.qos_flags
|=
617 QOS_PARAM_FLG_TXOP_TYPE_MSK
;
618 if (priv
->qos_data
.qos_active
)
619 priv
->qos_data
.def_qos_parm
.qos_flags
|=
620 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
622 if (priv
->current_ht_config
.is_ht
)
623 priv
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
625 if (force
|| iwl_is_associated(priv
)) {
626 IWL_DEBUG_QOS(priv
, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
627 priv
->qos_data
.qos_active
,
628 priv
->qos_data
.def_qos_parm
.qos_flags
);
630 iwl_send_cmd_pdu_async(priv
, REPLY_QOS_PARAM
,
631 sizeof(struct iwl_qosparam_cmd
),
632 &priv
->qos_data
.def_qos_parm
, NULL
);
636 #define MAX_UCODE_BEACON_INTERVAL 4096
638 static u16
iwl_adjust_beacon_interval(u16 beacon_val
)
641 u16 beacon_factor
= 0;
643 beacon_factor
= (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
644 / MAX_UCODE_BEACON_INTERVAL
;
645 new_val
= beacon_val
/ beacon_factor
;
648 new_val
= MAX_UCODE_BEACON_INTERVAL
;
653 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
656 s32 interval_tm
, rem
;
658 struct ieee80211_conf
*conf
= NULL
;
661 conf
= ieee80211_get_hw_conf(priv
->hw
);
663 spin_lock_irqsave(&priv
->lock
, flags
);
664 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
665 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
667 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
668 beacon_int
= iwl_adjust_beacon_interval(priv
->beacon_int
);
669 priv
->rxon_timing
.atim_window
= 0;
671 beacon_int
= iwl_adjust_beacon_interval(conf
->beacon_int
);
673 /* TODO: we need to get atim_window from upper stack
674 * for now we set to 0 */
675 priv
->rxon_timing
.atim_window
= 0;
678 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
680 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
681 interval_tm
= beacon_int
* 1024;
682 rem
= do_div(tsf
, interval_tm
);
683 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
685 spin_unlock_irqrestore(&priv
->lock
, flags
);
686 IWL_DEBUG_ASSOC(priv
, "beacon interval %d beacon timer %d beacon tim %d\n",
687 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
688 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
689 le16_to_cpu(priv
->rxon_timing
.atim_window
));
692 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
694 iwl_connection_init_rx_config(priv
, mode
);
695 iwl_set_rxon_chain(priv
);
696 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
698 iwl_clear_stations_table(priv
);
700 /* dont commit rxon if rf-kill is on*/
701 if (!iwl_is_ready_rf(priv
))
704 cancel_delayed_work(&priv
->scan_check
);
705 if (iwl_scan_cancel_timeout(priv
, 100)) {
706 IWL_WARN(priv
, "Aborted scan still in progress after 100ms\n");
707 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
711 iwl_commit_rxon(priv
);
716 /******************************************************************************
718 * Generic RX handler implementations
720 ******************************************************************************/
721 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
722 struct iwl_rx_mem_buffer
*rxb
)
724 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
725 struct iwl_alive_resp
*palive
;
726 struct delayed_work
*pwork
;
728 palive
= &pkt
->u
.alive_frame
;
730 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
732 palive
->is_valid
, palive
->ver_type
,
733 palive
->ver_subtype
);
735 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
736 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
737 memcpy(&priv
->card_alive_init
,
739 sizeof(struct iwl_init_alive_resp
));
740 pwork
= &priv
->init_alive_start
;
742 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
743 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
744 sizeof(struct iwl_alive_resp
));
745 pwork
= &priv
->alive_start
;
748 /* We delay the ALIVE response by 5ms to
749 * give the HW RF Kill time to activate... */
750 if (palive
->is_valid
== UCODE_VALID_OK
)
751 queue_delayed_work(priv
->workqueue
, pwork
,
752 msecs_to_jiffies(5));
754 IWL_WARN(priv
, "uCode did not respond OK.\n");
757 static void iwl_bg_beacon_update(struct work_struct
*work
)
759 struct iwl_priv
*priv
=
760 container_of(work
, struct iwl_priv
, beacon_update
);
761 struct sk_buff
*beacon
;
763 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
764 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
767 IWL_ERR(priv
, "update beacon failed\n");
771 mutex_lock(&priv
->mutex
);
772 /* new beacon skb is allocated every time; dispose previous.*/
773 if (priv
->ibss_beacon
)
774 dev_kfree_skb(priv
->ibss_beacon
);
776 priv
->ibss_beacon
= beacon
;
777 mutex_unlock(&priv
->mutex
);
779 iwl_send_beacon_cmd(priv
);
783 * iwl_bg_statistics_periodic - Timer callback to queue statistics
785 * This callback is provided in order to send a statistics request.
787 * This timer function is continually reset to execute within
788 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
789 * was received. We need to ensure we receive the statistics in order
790 * to update the temperature used for calibrating the TXPOWER.
792 static void iwl_bg_statistics_periodic(unsigned long data
)
794 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
796 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
799 /* dont send host command if rf-kill is on */
800 if (!iwl_is_ready_rf(priv
))
803 iwl_send_statistics_request(priv
, CMD_ASYNC
);
806 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
807 struct iwl_rx_mem_buffer
*rxb
)
809 #ifdef CONFIG_IWLWIFI_DEBUG
810 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
811 struct iwl4965_beacon_notif
*beacon
=
812 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
813 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
815 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
816 "tsf %d %d rate %d\n",
817 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
818 beacon
->beacon_notify_hdr
.failure_frame
,
819 le32_to_cpu(beacon
->ibss_mgr_status
),
820 le32_to_cpu(beacon
->high_tsf
),
821 le32_to_cpu(beacon
->low_tsf
), rate
);
824 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
825 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
826 queue_work(priv
->workqueue
, &priv
->beacon_update
);
829 /* Handle notification from uCode that card's power state is changing
830 * due to software, hardware, or critical temperature RFKILL */
831 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
832 struct iwl_rx_mem_buffer
*rxb
)
834 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
835 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
836 unsigned long status
= priv
->status
;
838 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
839 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
840 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
842 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
845 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
846 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
848 if (!iwl_grab_nic_access(priv
)) {
850 priv
, HBUS_TARG_MBX_C
,
851 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
853 iwl_release_nic_access(priv
);
856 if (!(flags
& RXON_CARD_DISABLED
)) {
857 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
858 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
859 if (!iwl_grab_nic_access(priv
)) {
861 priv
, HBUS_TARG_MBX_C
,
862 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
864 iwl_release_nic_access(priv
);
868 if (flags
& RF_CARD_DISABLED
) {
869 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
870 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
871 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
872 if (!iwl_grab_nic_access(priv
))
873 iwl_release_nic_access(priv
);
877 if (flags
& HW_CARD_DISABLED
)
878 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
880 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
883 if (flags
& SW_CARD_DISABLED
)
884 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
886 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
888 if (!(flags
& RXON_CARD_DISABLED
))
889 iwl_scan_cancel(priv
);
891 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
892 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
893 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
894 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
895 queue_work(priv
->workqueue
, &priv
->rf_kill
);
897 wake_up_interruptible(&priv
->wait_command_queue
);
900 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
905 spin_lock_irqsave(&priv
->lock
, flags
);
906 ret
= iwl_grab_nic_access(priv
);
910 if (src
== IWL_PWR_SRC_VAUX
) {
911 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
912 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
913 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
914 ~APMG_PS_CTRL_MSK_PWR_SRC
);
916 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
917 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
918 ~APMG_PS_CTRL_MSK_PWR_SRC
);
921 iwl_release_nic_access(priv
);
923 spin_unlock_irqrestore(&priv
->lock
, flags
);
928 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
930 * Setup the RX handlers for each of the reply types sent from the uCode
933 * This function chains into the hardware specific files for them to setup
934 * any hardware specific handlers as well.
936 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
938 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
939 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
940 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
941 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
942 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
943 iwl_rx_pm_debug_statistics_notif
;
944 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
947 * The same handler is used for both the REPLY to a discrete
948 * statistics request from the host as well as for the periodic
949 * statistics notifications (after received beacons) from the uCode.
951 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
952 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
954 iwl_setup_spectrum_handlers(priv
);
955 iwl_setup_rx_scan_handlers(priv
);
957 /* status change handler */
958 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
960 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
961 iwl_rx_missed_beacon_notif
;
963 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
964 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
966 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
967 /* Set up hardware specific Rx handlers */
968 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
972 * iwl_rx_handle - Main entry function for receiving responses from uCode
974 * Uses the priv->rx_handlers callback function array to invoke
975 * the appropriate handlers, including command responses,
976 * frame-received notifications, and other notifications.
978 void iwl_rx_handle(struct iwl_priv
*priv
)
980 struct iwl_rx_mem_buffer
*rxb
;
981 struct iwl_rx_packet
*pkt
;
982 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
989 /* uCode's read index (stored in shared DRAM) indicates the last Rx
990 * buffer that the driver may process (last buffer filled by ucode). */
991 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
994 /* Rx interrupt, but nothing sent from uCode */
996 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
998 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
1002 rxb
= rxq
->queue
[i
];
1004 /* If an RXB doesn't have a Rx queue slot associated with it,
1005 * then a bug has been introduced in the queue refilling
1006 * routines -- catch it here */
1007 BUG_ON(rxb
== NULL
);
1009 rxq
->queue
[i
] = NULL
;
1011 dma_sync_single_range_for_cpu(
1012 &priv
->pci_dev
->dev
, rxb
->real_dma_addr
,
1013 rxb
->aligned_dma_addr
- rxb
->real_dma_addr
,
1014 priv
->hw_params
.rx_buf_size
,
1015 PCI_DMA_FROMDEVICE
);
1016 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
1018 /* Reclaim a command buffer only if this packet is a response
1019 * to a (driver-originated) command.
1020 * If the packet (e.g. Rx frame) originated from uCode,
1021 * there is no command buffer to reclaim.
1022 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1023 * but apparently a few don't get set; catch them here. */
1024 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
1025 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
1026 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
1027 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
1028 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
1029 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
1030 (pkt
->hdr
.cmd
!= REPLY_TX
);
1032 /* Based on type of command response or notification,
1033 * handle those that need handling via function in
1034 * rx_handlers table. See iwl_setup_rx_handlers() */
1035 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1036 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
1037 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1038 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1040 /* No handling needed */
1042 "r %d i %d No handler needed for %s, 0x%02x\n",
1043 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1048 /* Invoke any callbacks, transfer the skb to caller, and
1049 * fire off the (possibly) blocking iwl_send_cmd()
1050 * as we reclaim the driver command queue */
1051 if (rxb
&& rxb
->skb
)
1052 iwl_tx_cmd_complete(priv
, rxb
);
1054 IWL_WARN(priv
, "Claim null rxb?\n");
1057 /* For now we just don't re-use anything. We can tweak this
1058 * later to try and re-use notification packets and SKBs that
1059 * fail to Rx correctly */
1060 if (rxb
->skb
!= NULL
) {
1061 priv
->alloc_rxb_skb
--;
1062 dev_kfree_skb_any(rxb
->skb
);
1066 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1067 priv
->hw_params
.rx_buf_size
+ 256,
1068 PCI_DMA_FROMDEVICE
);
1069 spin_lock_irqsave(&rxq
->lock
, flags
);
1070 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1071 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1072 i
= (i
+ 1) & RX_QUEUE_MASK
;
1073 /* If there are a lot of unused frames,
1074 * restock the Rx queue so ucode wont assert. */
1079 iwl_rx_queue_restock(priv
);
1085 /* Backtrack one entry */
1087 iwl_rx_queue_restock(priv
);
1090 /* call this function to flush any scheduled tasklet */
1091 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1093 /* wait to make sure we flush pending tasklet*/
1094 synchronize_irq(priv
->pci_dev
->irq
);
1095 tasklet_kill(&priv
->irq_tasklet
);
1098 static void iwl_error_recovery(struct iwl_priv
*priv
)
1100 unsigned long flags
;
1102 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
1103 sizeof(priv
->staging_rxon
));
1104 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1105 iwl_commit_rxon(priv
);
1107 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
1109 spin_lock_irqsave(&priv
->lock
, flags
);
1110 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
1111 priv
->error_recovering
= 0;
1112 spin_unlock_irqrestore(&priv
->lock
, flags
);
1115 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1117 u32 inta
, handled
= 0;
1119 unsigned long flags
;
1120 #ifdef CONFIG_IWLWIFI_DEBUG
1124 spin_lock_irqsave(&priv
->lock
, flags
);
1126 /* Ack/clear/reset pending uCode interrupts.
1127 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1128 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1129 inta
= iwl_read32(priv
, CSR_INT
);
1130 iwl_write32(priv
, CSR_INT
, inta
);
1132 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1133 * Any new interrupts that happen after this, either while we're
1134 * in this tasklet, or later, will show up in next ISR/tasklet. */
1135 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1136 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1138 #ifdef CONFIG_IWLWIFI_DEBUG
1139 if (priv
->debug_level
& IWL_DL_ISR
) {
1140 /* just for debug */
1141 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1142 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1143 inta
, inta_mask
, inta_fh
);
1147 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1148 * atomic, make sure that inta covers all the interrupts that
1149 * we've discovered, even if FH interrupt came in just after
1150 * reading CSR_INT. */
1151 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1152 inta
|= CSR_INT_BIT_FH_RX
;
1153 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1154 inta
|= CSR_INT_BIT_FH_TX
;
1156 /* Now service all interrupt bits discovered above. */
1157 if (inta
& CSR_INT_BIT_HW_ERR
) {
1158 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1160 /* Tell the device to stop sending interrupts */
1161 iwl_disable_interrupts(priv
);
1163 iwl_irq_handle_error(priv
);
1165 handled
|= CSR_INT_BIT_HW_ERR
;
1167 spin_unlock_irqrestore(&priv
->lock
, flags
);
1172 #ifdef CONFIG_IWLWIFI_DEBUG
1173 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1174 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1175 if (inta
& CSR_INT_BIT_SCD
)
1176 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1177 "the frame/frames.\n");
1179 /* Alive notification via Rx interrupt will do the real work */
1180 if (inta
& CSR_INT_BIT_ALIVE
)
1181 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1184 /* Safely ignore these bits for debug checks below */
1185 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1187 /* HW RF KILL switch toggled */
1188 if (inta
& CSR_INT_BIT_RF_KILL
) {
1190 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1191 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1194 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1195 hw_rf_kill
? "disable radio" : "enable radio");
1197 /* driver only loads ucode once setting the interface up.
1198 * the driver allows loading the ucode even if the radio
1199 * is killed. Hence update the killswitch state here. The
1200 * rfkill handler will care about restarting if needed.
1202 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1204 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1206 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1207 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1210 handled
|= CSR_INT_BIT_RF_KILL
;
1213 /* Chip got too hot and stopped itself */
1214 if (inta
& CSR_INT_BIT_CT_KILL
) {
1215 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1216 handled
|= CSR_INT_BIT_CT_KILL
;
1219 /* Error detected by uCode */
1220 if (inta
& CSR_INT_BIT_SW_ERR
) {
1221 IWL_ERR(priv
, "Microcode SW error detected. "
1222 " Restarting 0x%X.\n", inta
);
1223 iwl_irq_handle_error(priv
);
1224 handled
|= CSR_INT_BIT_SW_ERR
;
1227 /* uCode wakes up after power-down sleep */
1228 if (inta
& CSR_INT_BIT_WAKEUP
) {
1229 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1230 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1231 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1232 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1233 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1234 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1235 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1236 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1238 handled
|= CSR_INT_BIT_WAKEUP
;
1241 /* All uCode command responses, including Tx command responses,
1242 * Rx "responses" (frame-received notification), and other
1243 * notifications from uCode come through here*/
1244 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1245 iwl_rx_handle(priv
);
1246 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1249 if (inta
& CSR_INT_BIT_FH_TX
) {
1250 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1251 handled
|= CSR_INT_BIT_FH_TX
;
1252 /* FH finished to write, send event */
1253 priv
->ucode_write_complete
= 1;
1254 wake_up_interruptible(&priv
->wait_command_queue
);
1257 if (inta
& ~handled
)
1258 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1260 if (inta
& ~CSR_INI_SET_MASK
) {
1261 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1262 inta
& ~CSR_INI_SET_MASK
);
1263 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1266 /* Re-enable all interrupts */
1267 /* only Re-enable if diabled by irq */
1268 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1269 iwl_enable_interrupts(priv
);
1271 #ifdef CONFIG_IWLWIFI_DEBUG
1272 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1273 inta
= iwl_read32(priv
, CSR_INT
);
1274 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1275 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1276 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1277 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1280 spin_unlock_irqrestore(&priv
->lock
, flags
);
1283 /******************************************************************************
1285 * uCode download functions
1287 ******************************************************************************/
1289 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1291 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1292 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1293 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1294 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1295 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1296 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1299 static void iwl_nic_start(struct iwl_priv
*priv
)
1301 /* Remove all resets to allow NIC to operate */
1302 iwl_write32(priv
, CSR_RESET
, 0);
1307 * iwl_read_ucode - Read uCode images from disk file.
1309 * Copy into buffers for card to fetch via bus-mastering
1311 static int iwl_read_ucode(struct iwl_priv
*priv
)
1313 struct iwl_ucode
*ucode
;
1314 int ret
= -EINVAL
, index
;
1315 const struct firmware
*ucode_raw
;
1316 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1317 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1318 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1322 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1324 /* Ask kernel firmware_class module to get the boot firmware off disk.
1325 * request_firmware() is synchronous, file is in memory on return. */
1326 for (index
= api_max
; index
>= api_min
; index
--) {
1327 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1328 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1330 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
1337 if (index
< api_max
)
1338 IWL_ERR(priv
, "Loaded firmware %s, "
1339 "which is deprecated. "
1340 "Please use API v%u instead.\n",
1343 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file (%zd bytes) from disk\n",
1344 buf
, ucode_raw
->size
);
1352 /* Make sure that we got at least our header! */
1353 if (ucode_raw
->size
< sizeof(*ucode
)) {
1354 IWL_ERR(priv
, "File size way too small!\n");
1359 /* Data from ucode file: header followed by uCode images */
1360 ucode
= (void *)ucode_raw
->data
;
1362 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1363 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1364 inst_size
= le32_to_cpu(ucode
->inst_size
);
1365 data_size
= le32_to_cpu(ucode
->data_size
);
1366 init_size
= le32_to_cpu(ucode
->init_size
);
1367 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1368 boot_size
= le32_to_cpu(ucode
->boot_size
);
1370 /* api_ver should match the api version forming part of the
1371 * firmware filename ... but we don't check for that and only rely
1372 * on the API version read from firware header from here on forward */
1374 if (api_ver
< api_min
|| api_ver
> api_max
) {
1375 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1376 "Driver supports v%u, firmware is v%u.\n",
1378 priv
->ucode_ver
= 0;
1382 if (api_ver
!= api_max
)
1383 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1384 "got v%u. New firmware can be obtained "
1385 "from http://www.intellinuxwireless.org.\n",
1388 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
1389 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1390 IWL_UCODE_MINOR(priv
->ucode_ver
),
1391 IWL_UCODE_API(priv
->ucode_ver
),
1392 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1394 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1396 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
1398 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
1400 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
1402 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
1404 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
1407 /* Verify size of file vs. image size info in file's header */
1408 if (ucode_raw
->size
< sizeof(*ucode
) +
1409 inst_size
+ data_size
+ init_size
+
1410 init_data_size
+ boot_size
) {
1412 IWL_DEBUG_INFO(priv
, "uCode file size %d too small\n",
1413 (int)ucode_raw
->size
);
1418 /* Verify that uCode images will fit in card's SRAM */
1419 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1420 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
1426 if (data_size
> priv
->hw_params
.max_data_size
) {
1427 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
1432 if (init_size
> priv
->hw_params
.max_inst_size
) {
1433 IWL_INFO(priv
, "uCode init instr len %d too large to fit in\n",
1438 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1439 IWL_INFO(priv
, "uCode init data len %d too large to fit in\n",
1444 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1445 IWL_INFO(priv
, "uCode boot instr len %d too large to fit in\n",
1451 /* Allocate ucode buffers for card's bus-master loading ... */
1453 /* Runtime instructions and 2 copies of data:
1454 * 1) unmodified from disk
1455 * 2) backup cache for save/restore during power-downs */
1456 priv
->ucode_code
.len
= inst_size
;
1457 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1459 priv
->ucode_data
.len
= data_size
;
1460 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1462 priv
->ucode_data_backup
.len
= data_size
;
1463 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1465 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1466 !priv
->ucode_data_backup
.v_addr
)
1469 /* Initialization instructions and data */
1470 if (init_size
&& init_data_size
) {
1471 priv
->ucode_init
.len
= init_size
;
1472 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1474 priv
->ucode_init_data
.len
= init_data_size
;
1475 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1477 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1481 /* Bootstrap (instructions only, no data) */
1483 priv
->ucode_boot
.len
= boot_size
;
1484 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1486 if (!priv
->ucode_boot
.v_addr
)
1490 /* Copy images into buffers for card's bus-master reads ... */
1492 /* Runtime instructions (first block of data in file) */
1493 src
= &ucode
->data
[0];
1494 len
= priv
->ucode_code
.len
;
1495 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n", len
);
1496 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1497 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1498 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1500 /* Runtime data (2nd block)
1501 * NOTE: Copy into backup buffer will be done in iwl_up() */
1502 src
= &ucode
->data
[inst_size
];
1503 len
= priv
->ucode_data
.len
;
1504 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n", len
);
1505 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1506 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1508 /* Initialization instructions (3rd block) */
1510 src
= &ucode
->data
[inst_size
+ data_size
];
1511 len
= priv
->ucode_init
.len
;
1512 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1514 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1517 /* Initialization data (4th block) */
1518 if (init_data_size
) {
1519 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1520 len
= priv
->ucode_init_data
.len
;
1521 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1523 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1526 /* Bootstrap instructions (5th block) */
1527 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1528 len
= priv
->ucode_boot
.len
;
1529 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n", len
);
1530 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1532 /* We have our copies now, allow OS release its copies */
1533 release_firmware(ucode_raw
);
1537 IWL_ERR(priv
, "failed to allocate pci memory\n");
1539 iwl_dealloc_ucode_pci(priv
);
1542 release_firmware(ucode_raw
);
1549 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
,
1550 struct sk_buff
*skb
);
1553 * iwl_alive_start - called after REPLY_ALIVE notification received
1554 * from protocol/runtime uCode (initialization uCode's
1555 * Alive gets handled by iwl_init_alive_start()).
1557 static void iwl_alive_start(struct iwl_priv
*priv
)
1561 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1563 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1564 /* We had an error bringing up the hardware, so take it
1565 * all the way back down so we can try again */
1566 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
1570 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1571 * This is a paranoid check, because we would not have gotten the
1572 * "runtime" alive if code weren't properly loaded. */
1573 if (iwl_verify_ucode(priv
)) {
1574 /* Runtime instruction load was bad;
1575 * take it all the way back down so we can try again */
1576 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
1580 iwl_clear_stations_table(priv
);
1581 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1584 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
1588 /* After the ALIVE response, we can send host commands to the uCode */
1589 set_bit(STATUS_ALIVE
, &priv
->status
);
1591 if (iwl_is_rfkill(priv
))
1594 ieee80211_wake_queues(priv
->hw
);
1596 priv
->active_rate
= priv
->rates_mask
;
1597 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1599 if (iwl_is_associated(priv
)) {
1600 struct iwl_rxon_cmd
*active_rxon
=
1601 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1603 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
1604 sizeof(priv
->staging_rxon
));
1605 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1607 /* Initialize our rx_config data */
1608 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1609 iwl_set_rxon_chain(priv
);
1610 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1613 /* Configure Bluetooth device coexistence support */
1614 iwl_send_bt_config(priv
);
1616 iwl_reset_run_time_calib(priv
);
1618 /* Configure the adapter for unassociated operation */
1619 iwl_commit_rxon(priv
);
1621 /* At this point, the NIC is initialized and operational */
1622 iwl_rf_kill_ct_config(priv
);
1624 iwl_leds_register(priv
);
1626 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
1627 set_bit(STATUS_READY
, &priv
->status
);
1628 wake_up_interruptible(&priv
->wait_command_queue
);
1630 if (priv
->error_recovering
)
1631 iwl_error_recovery(priv
);
1633 iwl_power_update_mode(priv
, 1);
1635 /* reassociate for ADHOC mode */
1636 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1637 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1640 iwl_mac_beacon_update(priv
->hw
, beacon
);
1644 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1645 iwl_set_mode(priv
, priv
->iw_mode
);
1650 queue_work(priv
->workqueue
, &priv
->restart
);
1653 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1655 static void __iwl_down(struct iwl_priv
*priv
)
1657 unsigned long flags
;
1658 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1660 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
1663 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1665 iwl_leds_unregister(priv
);
1667 iwl_clear_stations_table(priv
);
1669 /* Unblock any waiting calls */
1670 wake_up_interruptible_all(&priv
->wait_command_queue
);
1672 /* Wipe out the EXIT_PENDING status bit if we are not actually
1673 * exiting the module */
1675 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1677 /* stop and reset the on-board processor */
1678 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1680 /* tell the device to stop sending interrupts */
1681 spin_lock_irqsave(&priv
->lock
, flags
);
1682 iwl_disable_interrupts(priv
);
1683 spin_unlock_irqrestore(&priv
->lock
, flags
);
1684 iwl_synchronize_irq(priv
);
1686 if (priv
->mac80211_registered
)
1687 ieee80211_stop_queues(priv
->hw
);
1689 /* If we have not previously called iwl_init() then
1690 * clear all bits but the RF Kill and SUSPEND bits and return */
1691 if (!iwl_is_init(priv
)) {
1692 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1694 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1696 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1697 STATUS_GEO_CONFIGURED
|
1698 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1700 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1701 STATUS_EXIT_PENDING
;
1705 /* ...otherwise clear out all the status bits but the RF Kill and
1706 * SUSPEND bits and continue taking the NIC down. */
1707 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1709 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1711 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1712 STATUS_GEO_CONFIGURED
|
1713 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1715 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1717 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1718 STATUS_EXIT_PENDING
;
1720 spin_lock_irqsave(&priv
->lock
, flags
);
1721 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1722 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1723 spin_unlock_irqrestore(&priv
->lock
, flags
);
1725 iwl_txq_ctx_stop(priv
);
1728 spin_lock_irqsave(&priv
->lock
, flags
);
1729 if (!iwl_grab_nic_access(priv
)) {
1730 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1731 APMG_CLK_VAL_DMA_CLK_RQT
);
1732 iwl_release_nic_access(priv
);
1734 spin_unlock_irqrestore(&priv
->lock
, flags
);
1738 /* FIXME: apm_ops.suspend(priv) */
1739 if (exit_pending
|| test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
1740 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1742 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
1744 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
1746 if (priv
->ibss_beacon
)
1747 dev_kfree_skb(priv
->ibss_beacon
);
1748 priv
->ibss_beacon
= NULL
;
1750 /* clear out any free frames */
1751 iwl_clear_free_frames(priv
);
1754 static void iwl_down(struct iwl_priv
*priv
)
1756 mutex_lock(&priv
->mutex
);
1758 mutex_unlock(&priv
->mutex
);
1760 iwl_cancel_deferred_work(priv
);
1763 #define MAX_HW_RESTARTS 5
1765 static int __iwl_up(struct iwl_priv
*priv
)
1770 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1771 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
1775 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
1776 IWL_ERR(priv
, "ucode not available for device bringup\n");
1780 /* If platform's RF_KILL switch is NOT set to KILL */
1781 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
1782 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1784 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1786 if (iwl_is_rfkill(priv
)) {
1787 iwl_enable_interrupts(priv
);
1788 IWL_WARN(priv
, "Radio disabled by %s RF Kill switch\n",
1789 test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? "HW" : "SW");
1793 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1795 ret
= iwl_hw_nic_init(priv
);
1797 IWL_ERR(priv
, "Unable to init nic\n");
1801 /* make sure rfkill handshake bits are cleared */
1802 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1803 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1804 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1806 /* clear (again), then enable host interrupts */
1807 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1808 iwl_enable_interrupts(priv
);
1810 /* really make sure rfkill handshake bits are cleared */
1811 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1812 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1814 /* Copy original ucode data image from disk into backup cache.
1815 * This will be used to initialize the on-board processor's
1816 * data SRAM for a clean start when the runtime program first loads. */
1817 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
1818 priv
->ucode_data
.len
);
1820 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
1822 iwl_clear_stations_table(priv
);
1824 /* load bootstrap state machine,
1825 * load bootstrap program into processor's memory,
1826 * prepare to load the "initialize" uCode */
1827 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
1830 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
1835 /* Clear out the uCode error bit if it is set */
1836 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
1838 /* start card; "initialize" will load runtime ucode */
1839 iwl_nic_start(priv
);
1841 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
1846 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1848 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1850 /* tried to restart and config the device for as long as our
1851 * patience could withstand */
1852 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
1857 /*****************************************************************************
1859 * Workqueue callbacks
1861 *****************************************************************************/
1863 static void iwl_bg_init_alive_start(struct work_struct
*data
)
1865 struct iwl_priv
*priv
=
1866 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
1868 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1871 mutex_lock(&priv
->mutex
);
1872 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
1873 mutex_unlock(&priv
->mutex
);
1876 static void iwl_bg_alive_start(struct work_struct
*data
)
1878 struct iwl_priv
*priv
=
1879 container_of(data
, struct iwl_priv
, alive_start
.work
);
1881 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1884 mutex_lock(&priv
->mutex
);
1885 iwl_alive_start(priv
);
1886 mutex_unlock(&priv
->mutex
);
1889 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
1891 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1892 run_time_calib_work
);
1894 mutex_lock(&priv
->mutex
);
1896 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1897 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1898 mutex_unlock(&priv
->mutex
);
1902 if (priv
->start_calib
) {
1903 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
1905 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
1908 mutex_unlock(&priv
->mutex
);
1912 static void iwl_bg_up(struct work_struct
*data
)
1914 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
1916 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1919 mutex_lock(&priv
->mutex
);
1921 mutex_unlock(&priv
->mutex
);
1922 iwl_rfkill_set_hw_state(priv
);
1925 static void iwl_bg_restart(struct work_struct
*data
)
1927 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
1929 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1933 queue_work(priv
->workqueue
, &priv
->up
);
1936 static void iwl_bg_rx_replenish(struct work_struct
*data
)
1938 struct iwl_priv
*priv
=
1939 container_of(data
, struct iwl_priv
, rx_replenish
);
1941 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1944 mutex_lock(&priv
->mutex
);
1945 iwl_rx_replenish(priv
);
1946 mutex_unlock(&priv
->mutex
);
1949 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1951 static void iwl_post_associate(struct iwl_priv
*priv
)
1953 struct ieee80211_conf
*conf
= NULL
;
1955 unsigned long flags
;
1957 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
1958 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
1962 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
1963 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
1966 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1970 if (!priv
->vif
|| !priv
->is_open
)
1973 iwl_power_cancel_timeout(priv
);
1974 iwl_scan_cancel_timeout(priv
, 200);
1976 conf
= ieee80211_get_hw_conf(priv
->hw
);
1978 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1979 iwl_commit_rxon(priv
);
1981 iwl_setup_rxon_timing(priv
);
1982 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
1983 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
1985 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
1986 "Attempting to continue.\n");
1988 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1990 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1992 iwl_set_rxon_chain(priv
);
1993 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
1995 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
1996 priv
->assoc_id
, priv
->beacon_int
);
1998 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1999 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2001 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2003 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2004 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2005 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2007 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2009 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2010 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2014 iwl_commit_rxon(priv
);
2016 switch (priv
->iw_mode
) {
2017 case NL80211_IFTYPE_STATION
:
2020 case NL80211_IFTYPE_ADHOC
:
2022 /* assume default assoc id */
2025 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
2026 iwl_send_beacon_cmd(priv
);
2031 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
2032 __func__
, priv
->iw_mode
);
2036 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2037 priv
->assoc_station_added
= 1;
2039 spin_lock_irqsave(&priv
->lock
, flags
);
2040 iwl_activate_qos(priv
, 0);
2041 spin_unlock_irqrestore(&priv
->lock
, flags
);
2043 /* the chain noise calibration will enabled PM upon completion
2044 * If chain noise has already been run, then we need to enable
2045 * power management here */
2046 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2047 iwl_power_enable_management(priv
);
2049 /* Enable Rx differential gain and sensitivity calibrations */
2050 iwl_chain_noise_reset(priv
);
2051 priv
->start_calib
= 1;
2055 /*****************************************************************************
2057 * mac80211 entry point functions
2059 *****************************************************************************/
2061 #define UCODE_READY_TIMEOUT (4 * HZ)
2063 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2065 struct iwl_priv
*priv
= hw
->priv
;
2068 IWL_DEBUG_MAC80211(priv
, "enter\n");
2070 /* we should be verifying the device is ready to be opened */
2071 mutex_lock(&priv
->mutex
);
2073 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
2074 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2075 * ucode filename and max sizes are card-specific. */
2077 if (!priv
->ucode_code
.len
) {
2078 ret
= iwl_read_ucode(priv
);
2080 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
2081 mutex_unlock(&priv
->mutex
);
2086 ret
= __iwl_up(priv
);
2088 mutex_unlock(&priv
->mutex
);
2090 iwl_rfkill_set_hw_state(priv
);
2095 if (iwl_is_rfkill(priv
))
2098 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2100 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
2103 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2104 * mac80211 will not be run successfully. */
2105 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2106 test_bit(STATUS_READY
, &priv
->status
),
2107 UCODE_READY_TIMEOUT
);
2109 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2110 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
2111 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2118 IWL_DEBUG_MAC80211(priv
, "leave\n");
2122 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2124 struct iwl_priv
*priv
= hw
->priv
;
2126 IWL_DEBUG_MAC80211(priv
, "enter\n");
2128 if (!priv
->is_open
) {
2129 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
2135 if (iwl_is_ready_rf(priv
)) {
2136 /* stop mac, cancel any scan request and clear
2137 * RXON_FILTER_ASSOC_MSK BIT
2139 mutex_lock(&priv
->mutex
);
2140 iwl_scan_cancel_timeout(priv
, 100);
2141 mutex_unlock(&priv
->mutex
);
2146 flush_workqueue(priv
->workqueue
);
2148 /* enable interrupts again in order to receive rfkill changes */
2149 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2150 iwl_enable_interrupts(priv
);
2152 IWL_DEBUG_MAC80211(priv
, "leave\n");
2155 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2157 struct iwl_priv
*priv
= hw
->priv
;
2159 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2161 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2162 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2164 if (iwl_tx_skb(priv
, skb
))
2165 dev_kfree_skb_any(skb
);
2167 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2168 return NETDEV_TX_OK
;
2171 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
2172 struct ieee80211_if_init_conf
*conf
)
2174 struct iwl_priv
*priv
= hw
->priv
;
2175 unsigned long flags
;
2177 IWL_DEBUG_MAC80211(priv
, "enter: type %d\n", conf
->type
);
2180 IWL_DEBUG_MAC80211(priv
, "leave - vif != NULL\n");
2184 spin_lock_irqsave(&priv
->lock
, flags
);
2185 priv
->vif
= conf
->vif
;
2186 priv
->iw_mode
= conf
->type
;
2188 spin_unlock_irqrestore(&priv
->lock
, flags
);
2190 mutex_lock(&priv
->mutex
);
2192 if (conf
->mac_addr
) {
2193 IWL_DEBUG_MAC80211(priv
, "Set %pM\n", conf
->mac_addr
);
2194 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2197 if (iwl_set_mode(priv
, conf
->type
) == -EAGAIN
)
2198 /* we are not ready, will run again when ready */
2199 set_bit(STATUS_MODE_PENDING
, &priv
->status
);
2201 mutex_unlock(&priv
->mutex
);
2203 IWL_DEBUG_MAC80211(priv
, "leave\n");
2208 * iwl_mac_config - mac80211 config callback
2210 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2211 * be set inappropriately and the driver currently sets the hardware up to
2212 * use it whenever needed.
2214 static int iwl_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2216 struct iwl_priv
*priv
= hw
->priv
;
2217 const struct iwl_channel_info
*ch_info
;
2218 struct ieee80211_conf
*conf
= &hw
->conf
;
2219 unsigned long flags
;
2223 mutex_lock(&priv
->mutex
);
2224 IWL_DEBUG_MAC80211(priv
, "enter to channel %d\n", conf
->channel
->hw_value
);
2226 priv
->current_ht_config
.is_ht
= conf_is_ht(conf
);
2228 if (conf
->radio_enabled
&& iwl_radio_kill_sw_enable_radio(priv
)) {
2229 IWL_DEBUG_MAC80211(priv
, "leave - RF-KILL - waiting for uCode\n");
2233 if (!conf
->radio_enabled
)
2234 iwl_radio_kill_sw_disable_radio(priv
);
2236 if (!iwl_is_ready(priv
)) {
2237 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2242 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2243 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2244 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
2245 mutex_unlock(&priv
->mutex
);
2249 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
2250 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
, channel
);
2251 if (!is_channel_valid(ch_info
)) {
2252 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
2257 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2258 !is_channel_ibss(ch_info
)) {
2259 IWL_ERR(priv
, "channel %d in band %d not IBSS channel\n",
2260 conf
->channel
->hw_value
, conf
->channel
->band
);
2265 spin_lock_irqsave(&priv
->lock
, flags
);
2268 /* if we are switching from ht to 2.4 clear flags
2269 * from any ht related info since 2.4 does not
2271 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
)
2272 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2273 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
2276 priv
->staging_rxon
.flags
= 0;
2278 iwl_set_rxon_channel(priv
, conf
->channel
);
2280 iwl_set_flags_for_band(priv
, conf
->channel
->band
);
2282 /* The list of supported rates and rate mask can be different
2283 * for each band; since the band may have changed, reset
2284 * the rate mask to what mac80211 lists */
2287 spin_unlock_irqrestore(&priv
->lock
, flags
);
2289 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2290 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
2291 iwl_hw_channel_switch(priv
, conf
->channel
);
2296 if (!conf
->radio_enabled
) {
2297 IWL_DEBUG_MAC80211(priv
, "leave - radio disabled\n");
2301 if (iwl_is_rfkill(priv
)) {
2302 IWL_DEBUG_MAC80211(priv
, "leave - RF kill\n");
2307 if (conf
->flags
& IEEE80211_CONF_PS
)
2308 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_INDEX_3
);
2310 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_MODE_CAM
);
2312 IWL_DEBUG_MAC80211(priv
, "Error setting power level\n");
2314 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
2315 priv
->tx_power_user_lmt
, conf
->power_level
);
2317 iwl_set_tx_power(priv
, conf
->power_level
, false);
2321 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2322 iwl_set_rxon_chain(priv
);
2324 if (memcmp(&priv
->active_rxon
,
2325 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
2326 iwl_commit_rxon(priv
);
2328 IWL_DEBUG_INFO(priv
, "No re-sending same RXON configuration.\n");
2330 IWL_DEBUG_MAC80211(priv
, "leave\n");
2333 mutex_unlock(&priv
->mutex
);
2337 static void iwl_config_ap(struct iwl_priv
*priv
)
2340 unsigned long flags
;
2342 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2345 /* The following should be done only at AP bring up */
2346 if (!iwl_is_associated(priv
)) {
2348 /* RXON - unassoc (to set timing command) */
2349 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2350 iwl_commit_rxon(priv
);
2353 iwl_setup_rxon_timing(priv
);
2354 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2355 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2357 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2358 "Attempting to continue.\n");
2360 iwl_set_rxon_chain(priv
);
2362 /* FIXME: what should be the assoc_id for AP? */
2363 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2364 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2365 priv
->staging_rxon
.flags
|=
2366 RXON_FLG_SHORT_PREAMBLE_MSK
;
2368 priv
->staging_rxon
.flags
&=
2369 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2371 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2372 if (priv
->assoc_capability
&
2373 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2374 priv
->staging_rxon
.flags
|=
2375 RXON_FLG_SHORT_SLOT_MSK
;
2377 priv
->staging_rxon
.flags
&=
2378 ~RXON_FLG_SHORT_SLOT_MSK
;
2380 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2381 priv
->staging_rxon
.flags
&=
2382 ~RXON_FLG_SHORT_SLOT_MSK
;
2384 /* restore RXON assoc */
2385 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2386 iwl_commit_rxon(priv
);
2387 spin_lock_irqsave(&priv
->lock
, flags
);
2388 iwl_activate_qos(priv
, 1);
2389 spin_unlock_irqrestore(&priv
->lock
, flags
);
2390 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2392 iwl_send_beacon_cmd(priv
);
2394 /* FIXME - we need to add code here to detect a totally new
2395 * configuration, reset the AP, unassoc, rxon timing, assoc,
2396 * clear sta table, add BCAST sta... */
2400 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
,
2401 struct ieee80211_vif
*vif
,
2402 struct ieee80211_if_conf
*conf
)
2404 struct iwl_priv
*priv
= hw
->priv
;
2410 if (priv
->vif
!= vif
) {
2411 IWL_DEBUG_MAC80211(priv
, "leave - priv->vif != vif\n");
2415 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2416 conf
->changed
& IEEE80211_IFCC_BEACON
) {
2417 struct sk_buff
*beacon
= ieee80211_beacon_get(hw
, vif
);
2420 mutex_lock(&priv
->mutex
);
2421 rc
= iwl_mac_beacon_update(hw
, beacon
);
2422 mutex_unlock(&priv
->mutex
);
2427 if (!iwl_is_alive(priv
))
2430 mutex_lock(&priv
->mutex
);
2433 IWL_DEBUG_MAC80211(priv
, "bssid: %pM\n", conf
->bssid
);
2436 * very dubious code was here; the probe filtering flag is never set:
2438 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2439 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2442 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2444 conf
->bssid
= priv
->mac_addr
;
2445 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
2446 IWL_DEBUG_MAC80211(priv
, "bssid was set to: %pM\n",
2449 if (priv
->ibss_beacon
)
2450 dev_kfree_skb(priv
->ibss_beacon
);
2452 priv
->ibss_beacon
= ieee80211_beacon_get(hw
, vif
);
2455 if (iwl_is_rfkill(priv
))
2458 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
2459 !is_multicast_ether_addr(conf
->bssid
)) {
2460 /* If there is currently a HW scan going on in the background
2461 * then we need to cancel it else the RXON below will fail. */
2462 if (iwl_scan_cancel_timeout(priv
, 100)) {
2463 IWL_WARN(priv
, "Aborted scan still in progress "
2465 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
2466 mutex_unlock(&priv
->mutex
);
2469 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
2471 /* TODO: Audit driver for usage of these members and see
2472 * if mac80211 deprecates them (priv->bssid looks like it
2473 * shouldn't be there, but I haven't scanned the IBSS code
2474 * to verify) - jpk */
2475 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
2477 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2478 iwl_config_ap(priv
);
2480 rc
= iwl_commit_rxon(priv
);
2481 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && rc
)
2482 iwl_rxon_add_station(
2483 priv
, priv
->active_rxon
.bssid_addr
, 1);
2487 iwl_scan_cancel_timeout(priv
, 100);
2488 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2489 iwl_commit_rxon(priv
);
2493 IWL_DEBUG_MAC80211(priv
, "leave\n");
2494 mutex_unlock(&priv
->mutex
);
2499 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
2500 struct ieee80211_if_init_conf
*conf
)
2502 struct iwl_priv
*priv
= hw
->priv
;
2504 IWL_DEBUG_MAC80211(priv
, "enter\n");
2506 mutex_lock(&priv
->mutex
);
2508 if (iwl_is_ready_rf(priv
)) {
2509 iwl_scan_cancel_timeout(priv
, 100);
2510 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2511 iwl_commit_rxon(priv
);
2513 if (priv
->vif
== conf
->vif
) {
2515 memset(priv
->bssid
, 0, ETH_ALEN
);
2517 mutex_unlock(&priv
->mutex
);
2519 IWL_DEBUG_MAC80211(priv
, "leave\n");
2523 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2524 static void iwl_bss_info_changed(struct ieee80211_hw
*hw
,
2525 struct ieee80211_vif
*vif
,
2526 struct ieee80211_bss_conf
*bss_conf
,
2529 struct iwl_priv
*priv
= hw
->priv
;
2531 IWL_DEBUG_MAC80211(priv
, "changes = 0x%X\n", changes
);
2533 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
2534 IWL_DEBUG_MAC80211(priv
, "ERP_PREAMBLE %d\n",
2535 bss_conf
->use_short_preamble
);
2536 if (bss_conf
->use_short_preamble
)
2537 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2539 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2542 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
2543 IWL_DEBUG_MAC80211(priv
, "ERP_CTS %d\n", bss_conf
->use_cts_prot
);
2544 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
2545 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
2547 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
2550 if (changes
& BSS_CHANGED_HT
) {
2551 iwl_ht_conf(priv
, bss_conf
);
2552 iwl_set_rxon_chain(priv
);
2555 if (changes
& BSS_CHANGED_ASSOC
) {
2556 IWL_DEBUG_MAC80211(priv
, "ASSOC %d\n", bss_conf
->assoc
);
2557 /* This should never happen as this function should
2558 * never be called from interrupt context. */
2559 if (WARN_ON_ONCE(in_interrupt()))
2561 if (bss_conf
->assoc
) {
2562 priv
->assoc_id
= bss_conf
->aid
;
2563 priv
->beacon_int
= bss_conf
->beacon_int
;
2564 priv
->power_data
.dtim_period
= bss_conf
->dtim_period
;
2565 priv
->timestamp
= bss_conf
->timestamp
;
2566 priv
->assoc_capability
= bss_conf
->assoc_capability
;
2568 /* we have just associated, don't start scan too early
2569 * leave time for EAPOL exchange to complete
2571 priv
->next_scan_jiffies
= jiffies
+
2572 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
2573 mutex_lock(&priv
->mutex
);
2574 iwl_post_associate(priv
);
2575 mutex_unlock(&priv
->mutex
);
2578 IWL_DEBUG_MAC80211(priv
, "DISASSOC %d\n", bss_conf
->assoc
);
2580 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
2581 IWL_DEBUG_MAC80211(priv
, "Associated Changes %d\n", changes
);
2582 iwl_send_rxon_assoc(priv
);
2587 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
2588 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
2589 u32 iv32
, u16
*phase1key
)
2592 struct iwl_priv
*priv
= hw
->priv
;
2593 IWL_DEBUG_MAC80211(priv
, "enter\n");
2595 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
2597 IWL_DEBUG_MAC80211(priv
, "leave\n");
2600 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2601 struct ieee80211_vif
*vif
,
2602 struct ieee80211_sta
*sta
,
2603 struct ieee80211_key_conf
*key
)
2605 struct iwl_priv
*priv
= hw
->priv
;
2609 bool is_default_wep_key
= false;
2611 IWL_DEBUG_MAC80211(priv
, "enter\n");
2613 if (priv
->hw_params
.sw_crypto
) {
2614 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
2617 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
2618 sta_id
= iwl_find_station(priv
, addr
);
2619 if (sta_id
== IWL_INVALID_STATION
) {
2620 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
2626 mutex_lock(&priv
->mutex
);
2627 iwl_scan_cancel_timeout(priv
, 100);
2628 mutex_unlock(&priv
->mutex
);
2630 /* If we are getting WEP group key and we didn't receive any key mapping
2631 * so far, we are in legacy wep mode (group key only), otherwise we are
2633 * In legacy wep mode, we use another host command to the uCode */
2634 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
2635 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2637 is_default_wep_key
= !priv
->key_mapping_key
;
2639 is_default_wep_key
=
2640 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
2645 if (is_default_wep_key
)
2646 ret
= iwl_set_default_wep_key(priv
, key
);
2648 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
2650 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
2653 if (is_default_wep_key
)
2654 ret
= iwl_remove_default_wep_key(priv
, key
);
2656 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
2658 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
2664 IWL_DEBUG_MAC80211(priv
, "leave\n");
2669 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
2670 const struct ieee80211_tx_queue_params
*params
)
2672 struct iwl_priv
*priv
= hw
->priv
;
2673 unsigned long flags
;
2676 IWL_DEBUG_MAC80211(priv
, "enter\n");
2678 if (!iwl_is_ready_rf(priv
)) {
2679 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2683 if (queue
>= AC_NUM
) {
2684 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
2688 q
= AC_NUM
- 1 - queue
;
2690 spin_lock_irqsave(&priv
->lock
, flags
);
2692 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
2693 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
2694 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
2695 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
2696 cpu_to_le16((params
->txop
* 32));
2698 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
2699 priv
->qos_data
.qos_active
= 1;
2701 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2702 iwl_activate_qos(priv
, 1);
2703 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
2704 iwl_activate_qos(priv
, 0);
2706 spin_unlock_irqrestore(&priv
->lock
, flags
);
2708 IWL_DEBUG_MAC80211(priv
, "leave\n");
2712 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
2713 enum ieee80211_ampdu_mlme_action action
,
2714 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
2716 struct iwl_priv
*priv
= hw
->priv
;
2718 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
2721 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
2725 case IEEE80211_AMPDU_RX_START
:
2726 IWL_DEBUG_HT(priv
, "start Rx\n");
2727 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
2728 case IEEE80211_AMPDU_RX_STOP
:
2729 IWL_DEBUG_HT(priv
, "stop Rx\n");
2730 return iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
2731 case IEEE80211_AMPDU_TX_START
:
2732 IWL_DEBUG_HT(priv
, "start Tx\n");
2733 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
2734 case IEEE80211_AMPDU_TX_STOP
:
2735 IWL_DEBUG_HT(priv
, "stop Tx\n");
2736 return iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
2738 IWL_DEBUG_HT(priv
, "unknown\n");
2745 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
2746 struct ieee80211_tx_queue_stats
*stats
)
2748 struct iwl_priv
*priv
= hw
->priv
;
2750 struct iwl_tx_queue
*txq
;
2751 struct iwl_queue
*q
;
2752 unsigned long flags
;
2754 IWL_DEBUG_MAC80211(priv
, "enter\n");
2756 if (!iwl_is_ready_rf(priv
)) {
2757 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2761 spin_lock_irqsave(&priv
->lock
, flags
);
2763 for (i
= 0; i
< AC_NUM
; i
++) {
2764 txq
= &priv
->txq
[i
];
2766 avail
= iwl_queue_space(q
);
2768 stats
[i
].len
= q
->n_window
- avail
;
2769 stats
[i
].limit
= q
->n_window
- q
->high_mark
;
2770 stats
[i
].count
= q
->n_window
;
2773 spin_unlock_irqrestore(&priv
->lock
, flags
);
2775 IWL_DEBUG_MAC80211(priv
, "leave\n");
2780 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
2781 struct ieee80211_low_level_stats
*stats
)
2783 struct iwl_priv
*priv
= hw
->priv
;
2786 IWL_DEBUG_MAC80211(priv
, "enter\n");
2787 IWL_DEBUG_MAC80211(priv
, "leave\n");
2792 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
2794 struct iwl_priv
*priv
= hw
->priv
;
2795 unsigned long flags
;
2797 mutex_lock(&priv
->mutex
);
2798 IWL_DEBUG_MAC80211(priv
, "enter\n");
2800 spin_lock_irqsave(&priv
->lock
, flags
);
2801 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
2802 spin_unlock_irqrestore(&priv
->lock
, flags
);
2804 iwl_reset_qos(priv
);
2806 spin_lock_irqsave(&priv
->lock
, flags
);
2808 priv
->assoc_capability
= 0;
2809 priv
->assoc_station_added
= 0;
2811 /* new association get rid of ibss beacon skb */
2812 if (priv
->ibss_beacon
)
2813 dev_kfree_skb(priv
->ibss_beacon
);
2815 priv
->ibss_beacon
= NULL
;
2817 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
2818 priv
->timestamp
= 0;
2819 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
))
2820 priv
->beacon_int
= 0;
2822 spin_unlock_irqrestore(&priv
->lock
, flags
);
2824 if (!iwl_is_ready_rf(priv
)) {
2825 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2826 mutex_unlock(&priv
->mutex
);
2830 /* we are restarting association process
2831 * clear RXON_FILTER_ASSOC_MSK bit
2833 if (priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2834 iwl_scan_cancel_timeout(priv
, 100);
2835 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2836 iwl_commit_rxon(priv
);
2839 iwl_power_update_mode(priv
, 0);
2841 /* Per mac80211.h: This is only used in IBSS mode... */
2842 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2844 /* switch to CAM during association period.
2845 * the ucode will block any association/authentication
2846 * frome during assiciation period if it can not hear
2847 * the AP because of PM. the timer enable PM back is
2848 * association do not complete
2850 if (priv
->hw
->conf
.channel
->flags
& (IEEE80211_CHAN_PASSIVE_SCAN
|
2851 IEEE80211_CHAN_RADAR
))
2852 iwl_power_disable_management(priv
, 3000);
2854 IWL_DEBUG_MAC80211(priv
, "leave - not in IBSS\n");
2855 mutex_unlock(&priv
->mutex
);
2861 mutex_unlock(&priv
->mutex
);
2863 IWL_DEBUG_MAC80211(priv
, "leave\n");
2866 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2868 struct iwl_priv
*priv
= hw
->priv
;
2869 unsigned long flags
;
2872 IWL_DEBUG_MAC80211(priv
, "enter\n");
2874 if (!iwl_is_ready_rf(priv
)) {
2875 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2879 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2880 IWL_DEBUG_MAC80211(priv
, "leave - not IBSS\n");
2884 spin_lock_irqsave(&priv
->lock
, flags
);
2886 if (priv
->ibss_beacon
)
2887 dev_kfree_skb(priv
->ibss_beacon
);
2889 priv
->ibss_beacon
= skb
;
2892 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
2893 priv
->timestamp
= le64_to_cpu(timestamp
);
2895 IWL_DEBUG_MAC80211(priv
, "leave\n");
2896 spin_unlock_irqrestore(&priv
->lock
, flags
);
2898 iwl_reset_qos(priv
);
2900 iwl_post_associate(priv
);
2906 /*****************************************************************************
2910 *****************************************************************************/
2912 #ifdef CONFIG_IWLWIFI_DEBUG
2915 * The following adds a new attribute to the sysfs representation
2916 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2917 * used for controlling the debug level.
2919 * See the level definitions in iwl for details.
2922 static ssize_t
show_debug_level(struct device
*d
,
2923 struct device_attribute
*attr
, char *buf
)
2925 struct iwl_priv
*priv
= d
->driver_data
;
2927 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
2929 static ssize_t
store_debug_level(struct device
*d
,
2930 struct device_attribute
*attr
,
2931 const char *buf
, size_t count
)
2933 struct iwl_priv
*priv
= d
->driver_data
;
2937 ret
= strict_strtoul(buf
, 0, &val
);
2939 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
2941 priv
->debug_level
= val
;
2943 return strnlen(buf
, count
);
2946 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
2947 show_debug_level
, store_debug_level
);
2950 #endif /* CONFIG_IWLWIFI_DEBUG */
2953 static ssize_t
show_version(struct device
*d
,
2954 struct device_attribute
*attr
, char *buf
)
2956 struct iwl_priv
*priv
= d
->driver_data
;
2957 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
2961 if (palive
->is_valid
)
2962 pos
+= sprintf(buf
+ pos
,
2963 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2964 "fw type: 0x%01X 0x%01X\n",
2965 palive
->ucode_major
, palive
->ucode_minor
,
2966 palive
->sw_rev
[0], palive
->sw_rev
[1],
2967 palive
->ver_type
, palive
->ver_subtype
);
2969 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
2972 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
2973 pos
+= sprintf(buf
+ pos
, "EEPROM version: 0x%x\n",
2976 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
2982 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
2984 static ssize_t
show_temperature(struct device
*d
,
2985 struct device_attribute
*attr
, char *buf
)
2987 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2989 if (!iwl_is_alive(priv
))
2992 return sprintf(buf
, "%d\n", priv
->temperature
);
2995 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
2997 static ssize_t
show_tx_power(struct device
*d
,
2998 struct device_attribute
*attr
, char *buf
)
3000 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3002 if (!iwl_is_ready_rf(priv
))
3003 return sprintf(buf
, "off\n");
3005 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3008 static ssize_t
store_tx_power(struct device
*d
,
3009 struct device_attribute
*attr
,
3010 const char *buf
, size_t count
)
3012 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3016 ret
= strict_strtoul(buf
, 10, &val
);
3018 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
3020 iwl_set_tx_power(priv
, val
, false);
3025 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3027 static ssize_t
show_flags(struct device
*d
,
3028 struct device_attribute
*attr
, char *buf
)
3030 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3032 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3035 static ssize_t
store_flags(struct device
*d
,
3036 struct device_attribute
*attr
,
3037 const char *buf
, size_t count
)
3039 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3042 int ret
= strict_strtoul(buf
, 0, &val
);
3047 mutex_lock(&priv
->mutex
);
3048 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3049 /* Cancel any currently running scans... */
3050 if (iwl_scan_cancel_timeout(priv
, 100))
3051 IWL_WARN(priv
, "Could not cancel scan.\n");
3053 IWL_DEBUG_INFO(priv
, "Commit rxon.flags = 0x%04X\n", flags
);
3054 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3055 iwl_commit_rxon(priv
);
3058 mutex_unlock(&priv
->mutex
);
3063 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3065 static ssize_t
show_filter_flags(struct device
*d
,
3066 struct device_attribute
*attr
, char *buf
)
3068 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3070 return sprintf(buf
, "0x%04X\n",
3071 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3074 static ssize_t
store_filter_flags(struct device
*d
,
3075 struct device_attribute
*attr
,
3076 const char *buf
, size_t count
)
3078 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3081 int ret
= strict_strtoul(buf
, 0, &val
);
3084 filter_flags
= (u32
)val
;
3086 mutex_lock(&priv
->mutex
);
3087 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3088 /* Cancel any currently running scans... */
3089 if (iwl_scan_cancel_timeout(priv
, 100))
3090 IWL_WARN(priv
, "Could not cancel scan.\n");
3092 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3093 "0x%04X\n", filter_flags
);
3094 priv
->staging_rxon
.filter_flags
=
3095 cpu_to_le32(filter_flags
);
3096 iwl_commit_rxon(priv
);
3099 mutex_unlock(&priv
->mutex
);
3104 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3105 store_filter_flags
);
3107 static ssize_t
store_power_level(struct device
*d
,
3108 struct device_attribute
*attr
,
3109 const char *buf
, size_t count
)
3111 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3116 mutex_lock(&priv
->mutex
);
3118 if (!iwl_is_ready(priv
)) {
3123 ret
= strict_strtoul(buf
, 10, &mode
);
3127 ret
= iwl_power_set_user_mode(priv
, mode
);
3129 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3135 mutex_unlock(&priv
->mutex
);
3139 static ssize_t
show_power_level(struct device
*d
,
3140 struct device_attribute
*attr
, char *buf
)
3142 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3143 int mode
= priv
->power_data
.user_power_setting
;
3144 int system
= priv
->power_data
.system_power_setting
;
3145 int level
= priv
->power_data
.power_mode
;
3149 case IWL_POWER_SYS_AUTO
:
3150 p
+= sprintf(p
, "SYSTEM:auto");
3152 case IWL_POWER_SYS_AC
:
3153 p
+= sprintf(p
, "SYSTEM:ac");
3155 case IWL_POWER_SYS_BATTERY
:
3156 p
+= sprintf(p
, "SYSTEM:battery");
3160 p
+= sprintf(p
, "\tMODE:%s", (mode
< IWL_POWER_AUTO
) ?
3162 p
+= sprintf(p
, "\tINDEX:%d", level
);
3163 p
+= sprintf(p
, "\n");
3167 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
3171 static ssize_t
show_statistics(struct device
*d
,
3172 struct device_attribute
*attr
, char *buf
)
3174 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3175 u32 size
= sizeof(struct iwl_notif_statistics
);
3176 u32 len
= 0, ofs
= 0;
3177 u8
*data
= (u8
*)&priv
->statistics
;
3180 if (!iwl_is_alive(priv
))
3183 mutex_lock(&priv
->mutex
);
3184 rc
= iwl_send_statistics_request(priv
, 0);
3185 mutex_unlock(&priv
->mutex
);
3189 "Error sending statistics request: 0x%08X\n", rc
);
3193 while (size
&& (PAGE_SIZE
- len
)) {
3194 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3195 PAGE_SIZE
- len
, 1);
3197 if (PAGE_SIZE
- len
)
3201 size
-= min(size
, 16U);
3207 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3210 /*****************************************************************************
3212 * driver setup and teardown
3214 *****************************************************************************/
3216 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3218 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3220 init_waitqueue_head(&priv
->wait_command_queue
);
3222 INIT_WORK(&priv
->up
, iwl_bg_up
);
3223 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3224 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3225 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
3226 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3227 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3228 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3229 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3231 iwl_setup_scan_deferred_work(priv
);
3232 iwl_setup_power_deferred_work(priv
);
3234 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3235 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3237 init_timer(&priv
->statistics_periodic
);
3238 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3239 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3241 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3242 iwl_irq_tasklet
, (unsigned long)priv
);
3245 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3247 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3248 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3250 cancel_delayed_work_sync(&priv
->init_alive_start
);
3251 cancel_delayed_work(&priv
->scan_check
);
3252 cancel_delayed_work_sync(&priv
->set_power_save
);
3253 cancel_delayed_work(&priv
->alive_start
);
3254 cancel_work_sync(&priv
->beacon_update
);
3255 del_timer_sync(&priv
->statistics_periodic
);
3258 static struct attribute
*iwl_sysfs_entries
[] = {
3259 &dev_attr_flags
.attr
,
3260 &dev_attr_filter_flags
.attr
,
3261 &dev_attr_power_level
.attr
,
3262 &dev_attr_statistics
.attr
,
3263 &dev_attr_temperature
.attr
,
3264 &dev_attr_tx_power
.attr
,
3265 #ifdef CONFIG_IWLWIFI_DEBUG
3266 &dev_attr_debug_level
.attr
,
3268 &dev_attr_version
.attr
,
3273 static struct attribute_group iwl_attribute_group
= {
3274 .name
= NULL
, /* put in device directory */
3275 .attrs
= iwl_sysfs_entries
,
3278 static struct ieee80211_ops iwl_hw_ops
= {
3280 .start
= iwl_mac_start
,
3281 .stop
= iwl_mac_stop
,
3282 .add_interface
= iwl_mac_add_interface
,
3283 .remove_interface
= iwl_mac_remove_interface
,
3284 .config
= iwl_mac_config
,
3285 .config_interface
= iwl_mac_config_interface
,
3286 .configure_filter
= iwl_configure_filter
,
3287 .set_key
= iwl_mac_set_key
,
3288 .update_tkip_key
= iwl_mac_update_tkip_key
,
3289 .get_stats
= iwl_mac_get_stats
,
3290 .get_tx_stats
= iwl_mac_get_tx_stats
,
3291 .conf_tx
= iwl_mac_conf_tx
,
3292 .reset_tsf
= iwl_mac_reset_tsf
,
3293 .bss_info_changed
= iwl_bss_info_changed
,
3294 .ampdu_action
= iwl_mac_ampdu_action
,
3295 .hw_scan
= iwl_mac_hw_scan
3298 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3301 struct iwl_priv
*priv
;
3302 struct ieee80211_hw
*hw
;
3303 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3304 unsigned long flags
;
3307 /************************
3308 * 1. Allocating HW data
3309 ************************/
3311 /* Disabling hardware scan means that mac80211 will perform scans
3312 * "the hard way", rather than using device's scan. */
3313 if (cfg
->mod_params
->disable_hw_scan
) {
3314 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
3315 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3316 "Disabling hw_scan\n");
3317 iwl_hw_ops
.hw_scan
= NULL
;
3320 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3326 /* At this point both hw and priv are allocated. */
3328 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3330 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3332 priv
->pci_dev
= pdev
;
3334 #ifdef CONFIG_IWLWIFI_DEBUG
3335 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
3336 atomic_set(&priv
->restrict_refcnt
, 0);
3339 /**************************
3340 * 2. Initializing PCI bus
3341 **************************/
3342 if (pci_enable_device(pdev
)) {
3344 goto out_ieee80211_free_hw
;
3347 pci_set_master(pdev
);
3349 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3351 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3353 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3355 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3356 /* both attempts failed: */
3358 IWL_WARN(priv
, "No suitable DMA available.\n");
3359 goto out_pci_disable_device
;
3363 err
= pci_request_regions(pdev
, DRV_NAME
);
3365 goto out_pci_disable_device
;
3367 pci_set_drvdata(pdev
, priv
);
3370 /***********************
3371 * 3. Read REV register
3372 ***********************/
3373 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3374 if (!priv
->hw_base
) {
3376 goto out_pci_release_regions
;
3379 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3380 (unsigned long long) pci_resource_len(pdev
, 0));
3381 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3383 iwl_hw_detect(priv
);
3384 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3385 priv
->cfg
->name
, priv
->hw_rev
);
3387 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3388 * PCI Tx retries from interfering with C3 CPU state */
3389 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3392 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
3394 IWL_DEBUG_INFO(priv
, "Failed to init APMG\n");
3400 /* Read the EEPROM */
3401 err
= iwl_eeprom_init(priv
);
3403 IWL_ERR(priv
, "Unable to init EEPROM\n");
3406 err
= iwl_eeprom_check_version(priv
);
3410 /* extract MAC Address */
3411 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
3412 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
3413 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
3415 /************************
3416 * 5. Setup HW constants
3417 ************************/
3418 if (iwl_set_hw_params(priv
)) {
3419 IWL_ERR(priv
, "failed to set hw parameters\n");
3420 goto out_free_eeprom
;
3423 /*******************
3425 *******************/
3427 err
= iwl_init_drv(priv
);
3429 goto out_free_eeprom
;
3430 /* At this point both hw and priv are initialized. */
3432 /**********************************
3433 * 7. Initialize module parameters
3434 **********************************/
3436 /* Disable radio (SW RF KILL) via parameter when loading driver */
3437 if (priv
->cfg
->mod_params
->disable
) {
3438 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3439 IWL_DEBUG_INFO(priv
, "Radio disabled.\n");
3442 /********************
3444 ********************/
3445 spin_lock_irqsave(&priv
->lock
, flags
);
3446 iwl_disable_interrupts(priv
);
3447 spin_unlock_irqrestore(&priv
->lock
, flags
);
3449 pci_enable_msi(priv
->pci_dev
);
3451 err
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
3454 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
3455 goto out_disable_msi
;
3457 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3459 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3463 iwl_setup_deferred_work(priv
);
3464 iwl_setup_rx_handlers(priv
);
3466 /**********************************
3467 * 9. Setup and register mac80211
3468 **********************************/
3470 /* enable interrupts if needed: hw bug w/a */
3471 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3472 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3473 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3474 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3477 iwl_enable_interrupts(priv
);
3479 err
= iwl_setup_mac(priv
);
3481 goto out_remove_sysfs
;
3483 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
3485 IWL_ERR(priv
, "failed to create debugfs files\n");
3487 /* If platform's RF_KILL switch is NOT set to KILL */
3488 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3489 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3491 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3493 err
= iwl_rfkill_init(priv
);
3495 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
3496 "Ignoring error: %d\n", err
);
3498 iwl_rfkill_set_hw_state(priv
);
3500 iwl_power_initialize(priv
);
3504 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3506 free_irq(priv
->pci_dev
->irq
, priv
);
3508 pci_disable_msi(priv
->pci_dev
);
3509 iwl_uninit_drv(priv
);
3511 iwl_eeprom_free(priv
);
3513 pci_iounmap(pdev
, priv
->hw_base
);
3514 out_pci_release_regions
:
3515 pci_release_regions(pdev
);
3516 pci_set_drvdata(pdev
, NULL
);
3517 out_pci_disable_device
:
3518 pci_disable_device(pdev
);
3519 out_ieee80211_free_hw
:
3520 ieee80211_free_hw(priv
->hw
);
3525 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3527 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3528 unsigned long flags
;
3533 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3535 iwl_dbgfs_unregister(priv
);
3536 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3538 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3539 * to be called and iwl_down since we are removing the device
3540 * we need to set STATUS_EXIT_PENDING bit.
3542 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3543 if (priv
->mac80211_registered
) {
3544 ieee80211_unregister_hw(priv
->hw
);
3545 priv
->mac80211_registered
= 0;
3550 /* make sure we flush any pending irq or
3551 * tasklet for the driver
3553 spin_lock_irqsave(&priv
->lock
, flags
);
3554 iwl_disable_interrupts(priv
);
3555 spin_unlock_irqrestore(&priv
->lock
, flags
);
3557 iwl_synchronize_irq(priv
);
3559 iwl_rfkill_unregister(priv
);
3560 iwl_dealloc_ucode_pci(priv
);
3563 iwl_rx_queue_free(priv
, &priv
->rxq
);
3564 iwl_hw_txq_ctx_free(priv
);
3566 iwl_clear_stations_table(priv
);
3567 iwl_eeprom_free(priv
);
3570 /*netif_stop_queue(dev); */
3571 flush_workqueue(priv
->workqueue
);
3573 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3574 * priv->workqueue... so we can't take down the workqueue
3576 destroy_workqueue(priv
->workqueue
);
3577 priv
->workqueue
= NULL
;
3579 free_irq(priv
->pci_dev
->irq
, priv
);
3580 pci_disable_msi(priv
->pci_dev
);
3581 pci_iounmap(pdev
, priv
->hw_base
);
3582 pci_release_regions(pdev
);
3583 pci_disable_device(pdev
);
3584 pci_set_drvdata(pdev
, NULL
);
3586 iwl_uninit_drv(priv
);
3588 if (priv
->ibss_beacon
)
3589 dev_kfree_skb(priv
->ibss_beacon
);
3591 ieee80211_free_hw(priv
->hw
);
3596 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3598 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3600 if (priv
->is_open
) {
3601 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3602 iwl_mac_stop(priv
->hw
);
3606 pci_save_state(pdev
);
3607 pci_disable_device(pdev
);
3608 pci_set_power_state(pdev
, PCI_D3hot
);
3613 static int iwl_pci_resume(struct pci_dev
*pdev
)
3615 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3618 pci_set_power_state(pdev
, PCI_D0
);
3619 ret
= pci_enable_device(pdev
);
3622 pci_restore_state(pdev
);
3623 iwl_enable_interrupts(priv
);
3626 iwl_mac_start(priv
->hw
);
3628 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3632 #endif /* CONFIG_PM */
3634 /*****************************************************************************
3636 * driver and module entry point
3638 *****************************************************************************/
3640 /* Hardware specific file defines the PCI IDs table for that hardware module */
3641 static struct pci_device_id iwl_hw_card_ids
[] = {
3642 #ifdef CONFIG_IWL4965
3643 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3644 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3645 #endif /* CONFIG_IWL4965 */
3646 #ifdef CONFIG_IWL5000
3647 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
3648 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
3649 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
3650 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
3651 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
3652 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
3653 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3654 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3655 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3656 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3657 /* 5350 WiFi/WiMax */
3658 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
3659 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
3660 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
3661 /* 5150 Wifi/WiMax */
3662 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3663 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3664 /* 6000/6050 Series */
3665 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg
)},
3666 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg
)},
3667 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg
)},
3668 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3669 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3670 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3671 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3672 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3673 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3674 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3675 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3676 /* 100 Series WiFi */
3677 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID
, iwl100_bgn_cfg
)},
3678 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID
, iwl100_bgn_cfg
)},
3679 #endif /* CONFIG_IWL5000 */
3683 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
3685 static struct pci_driver iwl_driver
= {
3687 .id_table
= iwl_hw_card_ids
,
3688 .probe
= iwl_pci_probe
,
3689 .remove
= __devexit_p(iwl_pci_remove
),
3691 .suspend
= iwl_pci_suspend
,
3692 .resume
= iwl_pci_resume
,
3696 static int __init
iwl_init(void)
3700 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3701 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
3703 ret
= iwlagn_rate_control_register();
3705 printk(KERN_ERR DRV_NAME
3706 "Unable to register rate control algorithm: %d\n", ret
);
3710 ret
= pci_register_driver(&iwl_driver
);
3712 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
3713 goto error_register
;
3719 iwlagn_rate_control_unregister();
3723 static void __exit
iwl_exit(void)
3725 pci_unregister_driver(&iwl_driver
);
3726 iwlagn_rate_control_unregister();
3729 module_exit(iwl_exit
);
3730 module_init(iwl_init
);