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
),
447 PCI_DMA_BIDIRECTIONAL
);
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");
604 #define MAX_UCODE_BEACON_INTERVAL 4096
606 static u16
iwl_adjust_beacon_interval(u16 beacon_val
)
609 u16 beacon_factor
= 0;
611 beacon_factor
= (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
612 / MAX_UCODE_BEACON_INTERVAL
;
613 new_val
= beacon_val
/ beacon_factor
;
616 new_val
= MAX_UCODE_BEACON_INTERVAL
;
621 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
624 s32 interval_tm
, rem
;
626 struct ieee80211_conf
*conf
= NULL
;
629 conf
= ieee80211_get_hw_conf(priv
->hw
);
631 spin_lock_irqsave(&priv
->lock
, flags
);
632 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
633 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
635 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
636 beacon_int
= iwl_adjust_beacon_interval(priv
->beacon_int
);
637 priv
->rxon_timing
.atim_window
= 0;
639 beacon_int
= iwl_adjust_beacon_interval(conf
->beacon_int
);
641 /* TODO: we need to get atim_window from upper stack
642 * for now we set to 0 */
643 priv
->rxon_timing
.atim_window
= 0;
646 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
648 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
649 interval_tm
= beacon_int
* 1024;
650 rem
= do_div(tsf
, interval_tm
);
651 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
653 spin_unlock_irqrestore(&priv
->lock
, flags
);
654 IWL_DEBUG_ASSOC(priv
, "beacon interval %d beacon timer %d beacon tim %d\n",
655 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
656 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
657 le16_to_cpu(priv
->rxon_timing
.atim_window
));
660 static int iwl_set_mode(struct iwl_priv
*priv
, int mode
)
662 iwl_connection_init_rx_config(priv
, mode
);
663 iwl_set_rxon_chain(priv
);
664 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
666 iwl_clear_stations_table(priv
);
668 /* dont commit rxon if rf-kill is on*/
669 if (!iwl_is_ready_rf(priv
))
672 cancel_delayed_work(&priv
->scan_check
);
673 if (iwl_scan_cancel_timeout(priv
, 100)) {
674 IWL_WARN(priv
, "Aborted scan still in progress after 100ms\n");
675 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
679 iwl_commit_rxon(priv
);
684 /******************************************************************************
686 * Generic RX handler implementations
688 ******************************************************************************/
689 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
690 struct iwl_rx_mem_buffer
*rxb
)
692 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
693 struct iwl_alive_resp
*palive
;
694 struct delayed_work
*pwork
;
696 palive
= &pkt
->u
.alive_frame
;
698 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
700 palive
->is_valid
, palive
->ver_type
,
701 palive
->ver_subtype
);
703 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
704 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
705 memcpy(&priv
->card_alive_init
,
707 sizeof(struct iwl_init_alive_resp
));
708 pwork
= &priv
->init_alive_start
;
710 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
711 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
712 sizeof(struct iwl_alive_resp
));
713 pwork
= &priv
->alive_start
;
716 /* We delay the ALIVE response by 5ms to
717 * give the HW RF Kill time to activate... */
718 if (palive
->is_valid
== UCODE_VALID_OK
)
719 queue_delayed_work(priv
->workqueue
, pwork
,
720 msecs_to_jiffies(5));
722 IWL_WARN(priv
, "uCode did not respond OK.\n");
725 static void iwl_bg_beacon_update(struct work_struct
*work
)
727 struct iwl_priv
*priv
=
728 container_of(work
, struct iwl_priv
, beacon_update
);
729 struct sk_buff
*beacon
;
731 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
732 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
735 IWL_ERR(priv
, "update beacon failed\n");
739 mutex_lock(&priv
->mutex
);
740 /* new beacon skb is allocated every time; dispose previous.*/
741 if (priv
->ibss_beacon
)
742 dev_kfree_skb(priv
->ibss_beacon
);
744 priv
->ibss_beacon
= beacon
;
745 mutex_unlock(&priv
->mutex
);
747 iwl_send_beacon_cmd(priv
);
751 * iwl_bg_statistics_periodic - Timer callback to queue statistics
753 * This callback is provided in order to send a statistics request.
755 * This timer function is continually reset to execute within
756 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
757 * was received. We need to ensure we receive the statistics in order
758 * to update the temperature used for calibrating the TXPOWER.
760 static void iwl_bg_statistics_periodic(unsigned long data
)
762 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
764 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
767 /* dont send host command if rf-kill is on */
768 if (!iwl_is_ready_rf(priv
))
771 iwl_send_statistics_request(priv
, CMD_ASYNC
);
774 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
775 struct iwl_rx_mem_buffer
*rxb
)
777 #ifdef CONFIG_IWLWIFI_DEBUG
778 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
779 struct iwl4965_beacon_notif
*beacon
=
780 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
781 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
783 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
784 "tsf %d %d rate %d\n",
785 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
786 beacon
->beacon_notify_hdr
.failure_frame
,
787 le32_to_cpu(beacon
->ibss_mgr_status
),
788 le32_to_cpu(beacon
->high_tsf
),
789 le32_to_cpu(beacon
->low_tsf
), rate
);
792 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
793 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
794 queue_work(priv
->workqueue
, &priv
->beacon_update
);
797 /* Handle notification from uCode that card's power state is changing
798 * due to software, hardware, or critical temperature RFKILL */
799 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
800 struct iwl_rx_mem_buffer
*rxb
)
802 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
803 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
804 unsigned long status
= priv
->status
;
806 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
807 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
808 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
810 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
813 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
814 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
816 if (!iwl_grab_nic_access(priv
)) {
818 priv
, HBUS_TARG_MBX_C
,
819 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
821 iwl_release_nic_access(priv
);
824 if (!(flags
& RXON_CARD_DISABLED
)) {
825 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
826 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
827 if (!iwl_grab_nic_access(priv
)) {
829 priv
, HBUS_TARG_MBX_C
,
830 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
832 iwl_release_nic_access(priv
);
836 if (flags
& RF_CARD_DISABLED
) {
837 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
838 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
839 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
840 if (!iwl_grab_nic_access(priv
))
841 iwl_release_nic_access(priv
);
845 if (flags
& HW_CARD_DISABLED
)
846 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
848 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
851 if (flags
& SW_CARD_DISABLED
)
852 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
854 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
856 if (!(flags
& RXON_CARD_DISABLED
))
857 iwl_scan_cancel(priv
);
859 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
860 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
861 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
862 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
863 queue_work(priv
->workqueue
, &priv
->rf_kill
);
865 wake_up_interruptible(&priv
->wait_command_queue
);
868 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
873 spin_lock_irqsave(&priv
->lock
, flags
);
874 ret
= iwl_grab_nic_access(priv
);
878 if (src
== IWL_PWR_SRC_VAUX
) {
879 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
880 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
881 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
882 ~APMG_PS_CTRL_MSK_PWR_SRC
);
884 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
885 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
886 ~APMG_PS_CTRL_MSK_PWR_SRC
);
889 iwl_release_nic_access(priv
);
891 spin_unlock_irqrestore(&priv
->lock
, flags
);
896 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
898 * Setup the RX handlers for each of the reply types sent from the uCode
901 * This function chains into the hardware specific files for them to setup
902 * any hardware specific handlers as well.
904 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
906 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
907 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
908 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
909 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
910 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
911 iwl_rx_pm_debug_statistics_notif
;
912 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
915 * The same handler is used for both the REPLY to a discrete
916 * statistics request from the host as well as for the periodic
917 * statistics notifications (after received beacons) from the uCode.
919 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
920 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
922 iwl_setup_spectrum_handlers(priv
);
923 iwl_setup_rx_scan_handlers(priv
);
925 /* status change handler */
926 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
928 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
929 iwl_rx_missed_beacon_notif
;
931 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
932 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
934 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
935 /* Set up hardware specific Rx handlers */
936 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
940 * iwl_rx_handle - Main entry function for receiving responses from uCode
942 * Uses the priv->rx_handlers callback function array to invoke
943 * the appropriate handlers, including command responses,
944 * frame-received notifications, and other notifications.
946 void iwl_rx_handle(struct iwl_priv
*priv
)
948 struct iwl_rx_mem_buffer
*rxb
;
949 struct iwl_rx_packet
*pkt
;
950 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
957 /* uCode's read index (stored in shared DRAM) indicates the last Rx
958 * buffer that the driver may process (last buffer filled by ucode). */
959 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
962 /* Rx interrupt, but nothing sent from uCode */
964 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
966 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
972 /* If an RXB doesn't have a Rx queue slot associated with it,
973 * then a bug has been introduced in the queue refilling
974 * routines -- catch it here */
977 rxq
->queue
[i
] = NULL
;
979 dma_sync_single_range_for_cpu(
980 &priv
->pci_dev
->dev
, rxb
->real_dma_addr
,
981 rxb
->aligned_dma_addr
- rxb
->real_dma_addr
,
982 priv
->hw_params
.rx_buf_size
,
984 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
986 /* Reclaim a command buffer only if this packet is a response
987 * to a (driver-originated) command.
988 * If the packet (e.g. Rx frame) originated from uCode,
989 * there is no command buffer to reclaim.
990 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
991 * but apparently a few don't get set; catch them here. */
992 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
993 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
994 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
995 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
996 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
997 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
998 (pkt
->hdr
.cmd
!= REPLY_TX
);
1000 /* Based on type of command response or notification,
1001 * handle those that need handling via function in
1002 * rx_handlers table. See iwl_setup_rx_handlers() */
1003 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1004 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
1005 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
1006 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
1008 /* No handling needed */
1010 "r %d i %d No handler needed for %s, 0x%02x\n",
1011 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1016 /* Invoke any callbacks, transfer the skb to caller, and
1017 * fire off the (possibly) blocking iwl_send_cmd()
1018 * as we reclaim the driver command queue */
1019 if (rxb
&& rxb
->skb
)
1020 iwl_tx_cmd_complete(priv
, rxb
);
1022 IWL_WARN(priv
, "Claim null rxb?\n");
1025 /* For now we just don't re-use anything. We can tweak this
1026 * later to try and re-use notification packets and SKBs that
1027 * fail to Rx correctly */
1028 if (rxb
->skb
!= NULL
) {
1029 priv
->alloc_rxb_skb
--;
1030 dev_kfree_skb_any(rxb
->skb
);
1034 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
1035 priv
->hw_params
.rx_buf_size
+ 256,
1036 PCI_DMA_FROMDEVICE
);
1037 spin_lock_irqsave(&rxq
->lock
, flags
);
1038 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1039 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1040 i
= (i
+ 1) & RX_QUEUE_MASK
;
1041 /* If there are a lot of unused frames,
1042 * restock the Rx queue so ucode wont assert. */
1047 iwl_rx_queue_restock(priv
);
1053 /* Backtrack one entry */
1055 iwl_rx_queue_restock(priv
);
1058 /* call this function to flush any scheduled tasklet */
1059 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1061 /* wait to make sure we flush pending tasklet*/
1062 synchronize_irq(priv
->pci_dev
->irq
);
1063 tasklet_kill(&priv
->irq_tasklet
);
1066 static void iwl_error_recovery(struct iwl_priv
*priv
)
1068 unsigned long flags
;
1070 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
1071 sizeof(priv
->staging_rxon
));
1072 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1073 iwl_commit_rxon(priv
);
1075 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
1077 spin_lock_irqsave(&priv
->lock
, flags
);
1078 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
1079 priv
->error_recovering
= 0;
1080 spin_unlock_irqrestore(&priv
->lock
, flags
);
1083 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1085 u32 inta
, handled
= 0;
1087 unsigned long flags
;
1088 #ifdef CONFIG_IWLWIFI_DEBUG
1092 spin_lock_irqsave(&priv
->lock
, flags
);
1094 /* Ack/clear/reset pending uCode interrupts.
1095 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1096 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1097 inta
= iwl_read32(priv
, CSR_INT
);
1098 iwl_write32(priv
, CSR_INT
, inta
);
1100 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1101 * Any new interrupts that happen after this, either while we're
1102 * in this tasklet, or later, will show up in next ISR/tasklet. */
1103 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1104 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1106 #ifdef CONFIG_IWLWIFI_DEBUG
1107 if (priv
->debug_level
& IWL_DL_ISR
) {
1108 /* just for debug */
1109 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1110 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1111 inta
, inta_mask
, inta_fh
);
1115 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1116 * atomic, make sure that inta covers all the interrupts that
1117 * we've discovered, even if FH interrupt came in just after
1118 * reading CSR_INT. */
1119 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1120 inta
|= CSR_INT_BIT_FH_RX
;
1121 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1122 inta
|= CSR_INT_BIT_FH_TX
;
1124 /* Now service all interrupt bits discovered above. */
1125 if (inta
& CSR_INT_BIT_HW_ERR
) {
1126 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1128 /* Tell the device to stop sending interrupts */
1129 iwl_disable_interrupts(priv
);
1131 iwl_irq_handle_error(priv
);
1133 handled
|= CSR_INT_BIT_HW_ERR
;
1135 spin_unlock_irqrestore(&priv
->lock
, flags
);
1140 #ifdef CONFIG_IWLWIFI_DEBUG
1141 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1142 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1143 if (inta
& CSR_INT_BIT_SCD
)
1144 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1145 "the frame/frames.\n");
1147 /* Alive notification via Rx interrupt will do the real work */
1148 if (inta
& CSR_INT_BIT_ALIVE
)
1149 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1152 /* Safely ignore these bits for debug checks below */
1153 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1155 /* HW RF KILL switch toggled */
1156 if (inta
& CSR_INT_BIT_RF_KILL
) {
1158 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1159 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1162 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1163 hw_rf_kill
? "disable radio" : "enable radio");
1165 /* driver only loads ucode once setting the interface up.
1166 * the driver allows loading the ucode even if the radio
1167 * is killed. Hence update the killswitch state here. The
1168 * rfkill handler will care about restarting if needed.
1170 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1172 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1174 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1175 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1178 handled
|= CSR_INT_BIT_RF_KILL
;
1181 /* Chip got too hot and stopped itself */
1182 if (inta
& CSR_INT_BIT_CT_KILL
) {
1183 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1184 handled
|= CSR_INT_BIT_CT_KILL
;
1187 /* Error detected by uCode */
1188 if (inta
& CSR_INT_BIT_SW_ERR
) {
1189 IWL_ERR(priv
, "Microcode SW error detected. "
1190 " Restarting 0x%X.\n", inta
);
1191 iwl_irq_handle_error(priv
);
1192 handled
|= CSR_INT_BIT_SW_ERR
;
1195 /* uCode wakes up after power-down sleep */
1196 if (inta
& CSR_INT_BIT_WAKEUP
) {
1197 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1198 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1199 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1200 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1201 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1202 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1203 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1204 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1206 handled
|= CSR_INT_BIT_WAKEUP
;
1209 /* All uCode command responses, including Tx command responses,
1210 * Rx "responses" (frame-received notification), and other
1211 * notifications from uCode come through here*/
1212 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1213 iwl_rx_handle(priv
);
1214 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1217 if (inta
& CSR_INT_BIT_FH_TX
) {
1218 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1219 handled
|= CSR_INT_BIT_FH_TX
;
1220 /* FH finished to write, send event */
1221 priv
->ucode_write_complete
= 1;
1222 wake_up_interruptible(&priv
->wait_command_queue
);
1225 if (inta
& ~handled
)
1226 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1228 if (inta
& ~CSR_INI_SET_MASK
) {
1229 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1230 inta
& ~CSR_INI_SET_MASK
);
1231 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1234 /* Re-enable all interrupts */
1235 /* only Re-enable if diabled by irq */
1236 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1237 iwl_enable_interrupts(priv
);
1239 #ifdef CONFIG_IWLWIFI_DEBUG
1240 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1241 inta
= iwl_read32(priv
, CSR_INT
);
1242 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1243 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1244 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1245 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1248 spin_unlock_irqrestore(&priv
->lock
, flags
);
1251 /******************************************************************************
1253 * uCode download functions
1255 ******************************************************************************/
1257 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1259 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1260 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1261 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1262 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1263 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1264 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1267 static void iwl_nic_start(struct iwl_priv
*priv
)
1269 /* Remove all resets to allow NIC to operate */
1270 iwl_write32(priv
, CSR_RESET
, 0);
1275 * iwl_read_ucode - Read uCode images from disk file.
1277 * Copy into buffers for card to fetch via bus-mastering
1279 static int iwl_read_ucode(struct iwl_priv
*priv
)
1281 struct iwl_ucode
*ucode
;
1282 int ret
= -EINVAL
, index
;
1283 const struct firmware
*ucode_raw
;
1284 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1285 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1286 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1290 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1292 /* Ask kernel firmware_class module to get the boot firmware off disk.
1293 * request_firmware() is synchronous, file is in memory on return. */
1294 for (index
= api_max
; index
>= api_min
; index
--) {
1295 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1296 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1298 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
1305 if (index
< api_max
)
1306 IWL_ERR(priv
, "Loaded firmware %s, "
1307 "which is deprecated. "
1308 "Please use API v%u instead.\n",
1311 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file (%zd bytes) from disk\n",
1312 buf
, ucode_raw
->size
);
1320 /* Make sure that we got at least our header! */
1321 if (ucode_raw
->size
< sizeof(*ucode
)) {
1322 IWL_ERR(priv
, "File size way too small!\n");
1327 /* Data from ucode file: header followed by uCode images */
1328 ucode
= (void *)ucode_raw
->data
;
1330 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1331 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1332 inst_size
= le32_to_cpu(ucode
->inst_size
);
1333 data_size
= le32_to_cpu(ucode
->data_size
);
1334 init_size
= le32_to_cpu(ucode
->init_size
);
1335 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1336 boot_size
= le32_to_cpu(ucode
->boot_size
);
1338 /* api_ver should match the api version forming part of the
1339 * firmware filename ... but we don't check for that and only rely
1340 * on the API version read from firware header from here on forward */
1342 if (api_ver
< api_min
|| api_ver
> api_max
) {
1343 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1344 "Driver supports v%u, firmware is v%u.\n",
1346 priv
->ucode_ver
= 0;
1350 if (api_ver
!= api_max
)
1351 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1352 "got v%u. New firmware can be obtained "
1353 "from http://www.intellinuxwireless.org.\n",
1356 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
1357 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1358 IWL_UCODE_MINOR(priv
->ucode_ver
),
1359 IWL_UCODE_API(priv
->ucode_ver
),
1360 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1362 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1364 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
1366 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
1368 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
1370 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
1372 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
1375 /* Verify size of file vs. image size info in file's header */
1376 if (ucode_raw
->size
< sizeof(*ucode
) +
1377 inst_size
+ data_size
+ init_size
+
1378 init_data_size
+ boot_size
) {
1380 IWL_DEBUG_INFO(priv
, "uCode file size %d too small\n",
1381 (int)ucode_raw
->size
);
1386 /* Verify that uCode images will fit in card's SRAM */
1387 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1388 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
1394 if (data_size
> priv
->hw_params
.max_data_size
) {
1395 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
1400 if (init_size
> priv
->hw_params
.max_inst_size
) {
1401 IWL_INFO(priv
, "uCode init instr len %d too large to fit in\n",
1406 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1407 IWL_INFO(priv
, "uCode init data len %d too large to fit in\n",
1412 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1413 IWL_INFO(priv
, "uCode boot instr len %d too large to fit in\n",
1419 /* Allocate ucode buffers for card's bus-master loading ... */
1421 /* Runtime instructions and 2 copies of data:
1422 * 1) unmodified from disk
1423 * 2) backup cache for save/restore during power-downs */
1424 priv
->ucode_code
.len
= inst_size
;
1425 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1427 priv
->ucode_data
.len
= data_size
;
1428 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1430 priv
->ucode_data_backup
.len
= data_size
;
1431 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1433 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1434 !priv
->ucode_data_backup
.v_addr
)
1437 /* Initialization instructions and data */
1438 if (init_size
&& init_data_size
) {
1439 priv
->ucode_init
.len
= init_size
;
1440 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1442 priv
->ucode_init_data
.len
= init_data_size
;
1443 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1445 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1449 /* Bootstrap (instructions only, no data) */
1451 priv
->ucode_boot
.len
= boot_size
;
1452 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1454 if (!priv
->ucode_boot
.v_addr
)
1458 /* Copy images into buffers for card's bus-master reads ... */
1460 /* Runtime instructions (first block of data in file) */
1461 src
= &ucode
->data
[0];
1462 len
= priv
->ucode_code
.len
;
1463 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n", len
);
1464 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1465 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1466 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1468 /* Runtime data (2nd block)
1469 * NOTE: Copy into backup buffer will be done in iwl_up() */
1470 src
= &ucode
->data
[inst_size
];
1471 len
= priv
->ucode_data
.len
;
1472 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n", len
);
1473 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1474 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1476 /* Initialization instructions (3rd block) */
1478 src
= &ucode
->data
[inst_size
+ data_size
];
1479 len
= priv
->ucode_init
.len
;
1480 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1482 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1485 /* Initialization data (4th block) */
1486 if (init_data_size
) {
1487 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1488 len
= priv
->ucode_init_data
.len
;
1489 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1491 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1494 /* Bootstrap instructions (5th block) */
1495 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1496 len
= priv
->ucode_boot
.len
;
1497 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n", len
);
1498 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1500 /* We have our copies now, allow OS release its copies */
1501 release_firmware(ucode_raw
);
1505 IWL_ERR(priv
, "failed to allocate pci memory\n");
1507 iwl_dealloc_ucode_pci(priv
);
1510 release_firmware(ucode_raw
);
1517 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
,
1518 struct sk_buff
*skb
);
1521 * iwl_alive_start - called after REPLY_ALIVE notification received
1522 * from protocol/runtime uCode (initialization uCode's
1523 * Alive gets handled by iwl_init_alive_start()).
1525 static void iwl_alive_start(struct iwl_priv
*priv
)
1529 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1531 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1532 /* We had an error bringing up the hardware, so take it
1533 * all the way back down so we can try again */
1534 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
1538 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1539 * This is a paranoid check, because we would not have gotten the
1540 * "runtime" alive if code weren't properly loaded. */
1541 if (iwl_verify_ucode(priv
)) {
1542 /* Runtime instruction load was bad;
1543 * take it all the way back down so we can try again */
1544 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
1548 iwl_clear_stations_table(priv
);
1549 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1552 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
1556 /* After the ALIVE response, we can send host commands to the uCode */
1557 set_bit(STATUS_ALIVE
, &priv
->status
);
1559 if (iwl_is_rfkill(priv
))
1562 ieee80211_wake_queues(priv
->hw
);
1564 priv
->active_rate
= priv
->rates_mask
;
1565 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1567 if (iwl_is_associated(priv
)) {
1568 struct iwl_rxon_cmd
*active_rxon
=
1569 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1571 memcpy(&priv
->staging_rxon
, &priv
->active_rxon
,
1572 sizeof(priv
->staging_rxon
));
1573 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1575 /* Initialize our rx_config data */
1576 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1577 iwl_set_rxon_chain(priv
);
1578 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1581 /* Configure Bluetooth device coexistence support */
1582 iwl_send_bt_config(priv
);
1584 iwl_reset_run_time_calib(priv
);
1586 /* Configure the adapter for unassociated operation */
1587 iwl_commit_rxon(priv
);
1589 /* At this point, the NIC is initialized and operational */
1590 iwl_rf_kill_ct_config(priv
);
1592 iwl_leds_register(priv
);
1594 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
1595 set_bit(STATUS_READY
, &priv
->status
);
1596 wake_up_interruptible(&priv
->wait_command_queue
);
1598 if (priv
->error_recovering
)
1599 iwl_error_recovery(priv
);
1601 iwl_power_update_mode(priv
, 1);
1603 /* reassociate for ADHOC mode */
1604 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1605 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1608 iwl_mac_beacon_update(priv
->hw
, beacon
);
1612 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1613 iwl_set_mode(priv
, priv
->iw_mode
);
1618 queue_work(priv
->workqueue
, &priv
->restart
);
1621 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1623 static void __iwl_down(struct iwl_priv
*priv
)
1625 unsigned long flags
;
1626 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1628 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
1631 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1633 iwl_leds_unregister(priv
);
1635 iwl_clear_stations_table(priv
);
1637 /* Unblock any waiting calls */
1638 wake_up_interruptible_all(&priv
->wait_command_queue
);
1640 /* Wipe out the EXIT_PENDING status bit if we are not actually
1641 * exiting the module */
1643 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1645 /* stop and reset the on-board processor */
1646 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1648 /* tell the device to stop sending interrupts */
1649 spin_lock_irqsave(&priv
->lock
, flags
);
1650 iwl_disable_interrupts(priv
);
1651 spin_unlock_irqrestore(&priv
->lock
, flags
);
1652 iwl_synchronize_irq(priv
);
1654 if (priv
->mac80211_registered
)
1655 ieee80211_stop_queues(priv
->hw
);
1657 /* If we have not previously called iwl_init() then
1658 * clear all bits but the RF Kill and SUSPEND bits and return */
1659 if (!iwl_is_init(priv
)) {
1660 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1662 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1664 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1665 STATUS_GEO_CONFIGURED
|
1666 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1668 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1669 STATUS_EXIT_PENDING
;
1673 /* ...otherwise clear out all the status bits but the RF Kill and
1674 * SUSPEND bits and continue taking the NIC down. */
1675 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1677 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1679 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1680 STATUS_GEO_CONFIGURED
|
1681 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1683 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1685 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1686 STATUS_EXIT_PENDING
;
1688 spin_lock_irqsave(&priv
->lock
, flags
);
1689 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1690 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1691 spin_unlock_irqrestore(&priv
->lock
, flags
);
1693 iwl_txq_ctx_stop(priv
);
1696 spin_lock_irqsave(&priv
->lock
, flags
);
1697 if (!iwl_grab_nic_access(priv
)) {
1698 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1699 APMG_CLK_VAL_DMA_CLK_RQT
);
1700 iwl_release_nic_access(priv
);
1702 spin_unlock_irqrestore(&priv
->lock
, flags
);
1706 /* FIXME: apm_ops.suspend(priv) */
1707 if (exit_pending
|| test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
1708 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1710 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
1712 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
1714 if (priv
->ibss_beacon
)
1715 dev_kfree_skb(priv
->ibss_beacon
);
1716 priv
->ibss_beacon
= NULL
;
1718 /* clear out any free frames */
1719 iwl_clear_free_frames(priv
);
1722 static void iwl_down(struct iwl_priv
*priv
)
1724 mutex_lock(&priv
->mutex
);
1726 mutex_unlock(&priv
->mutex
);
1728 iwl_cancel_deferred_work(priv
);
1731 #define MAX_HW_RESTARTS 5
1733 static int __iwl_up(struct iwl_priv
*priv
)
1738 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1739 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
1743 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
1744 IWL_ERR(priv
, "ucode not available for device bringup\n");
1748 /* If platform's RF_KILL switch is NOT set to KILL */
1749 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
1750 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1752 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1754 if (iwl_is_rfkill(priv
)) {
1755 iwl_enable_interrupts(priv
);
1756 IWL_WARN(priv
, "Radio disabled by %s RF Kill switch\n",
1757 test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? "HW" : "SW");
1761 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1763 ret
= iwl_hw_nic_init(priv
);
1765 IWL_ERR(priv
, "Unable to init nic\n");
1769 /* make sure rfkill handshake bits are cleared */
1770 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1771 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1772 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1774 /* clear (again), then enable host interrupts */
1775 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1776 iwl_enable_interrupts(priv
);
1778 /* really make sure rfkill handshake bits are cleared */
1779 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1780 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1782 /* Copy original ucode data image from disk into backup cache.
1783 * This will be used to initialize the on-board processor's
1784 * data SRAM for a clean start when the runtime program first loads. */
1785 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
1786 priv
->ucode_data
.len
);
1788 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
1790 iwl_clear_stations_table(priv
);
1792 /* load bootstrap state machine,
1793 * load bootstrap program into processor's memory,
1794 * prepare to load the "initialize" uCode */
1795 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
1798 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
1803 /* Clear out the uCode error bit if it is set */
1804 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
1806 /* start card; "initialize" will load runtime ucode */
1807 iwl_nic_start(priv
);
1809 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
1814 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1816 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1818 /* tried to restart and config the device for as long as our
1819 * patience could withstand */
1820 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
1825 /*****************************************************************************
1827 * Workqueue callbacks
1829 *****************************************************************************/
1831 static void iwl_bg_init_alive_start(struct work_struct
*data
)
1833 struct iwl_priv
*priv
=
1834 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
1836 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1839 mutex_lock(&priv
->mutex
);
1840 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
1841 mutex_unlock(&priv
->mutex
);
1844 static void iwl_bg_alive_start(struct work_struct
*data
)
1846 struct iwl_priv
*priv
=
1847 container_of(data
, struct iwl_priv
, alive_start
.work
);
1849 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1852 mutex_lock(&priv
->mutex
);
1853 iwl_alive_start(priv
);
1854 mutex_unlock(&priv
->mutex
);
1857 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
1859 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1860 run_time_calib_work
);
1862 mutex_lock(&priv
->mutex
);
1864 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1865 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1866 mutex_unlock(&priv
->mutex
);
1870 if (priv
->start_calib
) {
1871 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
1873 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
1876 mutex_unlock(&priv
->mutex
);
1880 static void iwl_bg_up(struct work_struct
*data
)
1882 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
1884 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1887 mutex_lock(&priv
->mutex
);
1889 mutex_unlock(&priv
->mutex
);
1890 iwl_rfkill_set_hw_state(priv
);
1893 static void iwl_bg_restart(struct work_struct
*data
)
1895 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
1897 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1901 queue_work(priv
->workqueue
, &priv
->up
);
1904 static void iwl_bg_rx_replenish(struct work_struct
*data
)
1906 struct iwl_priv
*priv
=
1907 container_of(data
, struct iwl_priv
, rx_replenish
);
1909 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1912 mutex_lock(&priv
->mutex
);
1913 iwl_rx_replenish(priv
);
1914 mutex_unlock(&priv
->mutex
);
1917 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1919 static void iwl_post_associate(struct iwl_priv
*priv
)
1921 struct ieee80211_conf
*conf
= NULL
;
1923 unsigned long flags
;
1925 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
1926 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
1930 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
1931 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
1934 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1938 if (!priv
->vif
|| !priv
->is_open
)
1941 iwl_power_cancel_timeout(priv
);
1942 iwl_scan_cancel_timeout(priv
, 200);
1944 conf
= ieee80211_get_hw_conf(priv
->hw
);
1946 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1947 iwl_commit_rxon(priv
);
1949 iwl_setup_rxon_timing(priv
);
1950 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
1951 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
1953 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
1954 "Attempting to continue.\n");
1956 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1958 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1960 iwl_set_rxon_chain(priv
);
1961 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
1963 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
1964 priv
->assoc_id
, priv
->beacon_int
);
1966 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1967 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1969 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1971 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
1972 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1973 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1975 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1977 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
1978 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1982 iwl_commit_rxon(priv
);
1984 switch (priv
->iw_mode
) {
1985 case NL80211_IFTYPE_STATION
:
1988 case NL80211_IFTYPE_ADHOC
:
1990 /* assume default assoc id */
1993 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
1994 iwl_send_beacon_cmd(priv
);
1999 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
2000 __func__
, priv
->iw_mode
);
2004 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2005 priv
->assoc_station_added
= 1;
2007 spin_lock_irqsave(&priv
->lock
, flags
);
2008 iwl_activate_qos(priv
, 0);
2009 spin_unlock_irqrestore(&priv
->lock
, flags
);
2011 /* the chain noise calibration will enabled PM upon completion
2012 * If chain noise has already been run, then we need to enable
2013 * power management here */
2014 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2015 iwl_power_enable_management(priv
);
2017 /* Enable Rx differential gain and sensitivity calibrations */
2018 iwl_chain_noise_reset(priv
);
2019 priv
->start_calib
= 1;
2023 /*****************************************************************************
2025 * mac80211 entry point functions
2027 *****************************************************************************/
2029 #define UCODE_READY_TIMEOUT (4 * HZ)
2031 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2033 struct iwl_priv
*priv
= hw
->priv
;
2036 IWL_DEBUG_MAC80211(priv
, "enter\n");
2038 /* we should be verifying the device is ready to be opened */
2039 mutex_lock(&priv
->mutex
);
2041 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
2042 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2043 * ucode filename and max sizes are card-specific. */
2045 if (!priv
->ucode_code
.len
) {
2046 ret
= iwl_read_ucode(priv
);
2048 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
2049 mutex_unlock(&priv
->mutex
);
2054 ret
= __iwl_up(priv
);
2056 mutex_unlock(&priv
->mutex
);
2058 iwl_rfkill_set_hw_state(priv
);
2063 if (iwl_is_rfkill(priv
))
2066 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2068 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
2071 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2072 * mac80211 will not be run successfully. */
2073 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2074 test_bit(STATUS_READY
, &priv
->status
),
2075 UCODE_READY_TIMEOUT
);
2077 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2078 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
2079 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2086 IWL_DEBUG_MAC80211(priv
, "leave\n");
2090 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2092 struct iwl_priv
*priv
= hw
->priv
;
2094 IWL_DEBUG_MAC80211(priv
, "enter\n");
2096 if (!priv
->is_open
) {
2097 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
2103 if (iwl_is_ready_rf(priv
)) {
2104 /* stop mac, cancel any scan request and clear
2105 * RXON_FILTER_ASSOC_MSK BIT
2107 mutex_lock(&priv
->mutex
);
2108 iwl_scan_cancel_timeout(priv
, 100);
2109 mutex_unlock(&priv
->mutex
);
2114 flush_workqueue(priv
->workqueue
);
2116 /* enable interrupts again in order to receive rfkill changes */
2117 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2118 iwl_enable_interrupts(priv
);
2120 IWL_DEBUG_MAC80211(priv
, "leave\n");
2123 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2125 struct iwl_priv
*priv
= hw
->priv
;
2127 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2129 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2130 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2132 if (iwl_tx_skb(priv
, skb
))
2133 dev_kfree_skb_any(skb
);
2135 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2136 return NETDEV_TX_OK
;
2139 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
2140 struct ieee80211_if_init_conf
*conf
)
2142 struct iwl_priv
*priv
= hw
->priv
;
2143 unsigned long flags
;
2145 IWL_DEBUG_MAC80211(priv
, "enter: type %d\n", conf
->type
);
2148 IWL_DEBUG_MAC80211(priv
, "leave - vif != NULL\n");
2152 spin_lock_irqsave(&priv
->lock
, flags
);
2153 priv
->vif
= conf
->vif
;
2154 priv
->iw_mode
= conf
->type
;
2156 spin_unlock_irqrestore(&priv
->lock
, flags
);
2158 mutex_lock(&priv
->mutex
);
2160 if (conf
->mac_addr
) {
2161 IWL_DEBUG_MAC80211(priv
, "Set %pM\n", conf
->mac_addr
);
2162 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2165 if (iwl_set_mode(priv
, conf
->type
) == -EAGAIN
)
2166 /* we are not ready, will run again when ready */
2167 set_bit(STATUS_MODE_PENDING
, &priv
->status
);
2169 mutex_unlock(&priv
->mutex
);
2171 IWL_DEBUG_MAC80211(priv
, "leave\n");
2176 * iwl_mac_config - mac80211 config callback
2178 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2179 * be set inappropriately and the driver currently sets the hardware up to
2180 * use it whenever needed.
2182 static int iwl_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2184 struct iwl_priv
*priv
= hw
->priv
;
2185 const struct iwl_channel_info
*ch_info
;
2186 struct ieee80211_conf
*conf
= &hw
->conf
;
2187 unsigned long flags
;
2191 mutex_lock(&priv
->mutex
);
2192 IWL_DEBUG_MAC80211(priv
, "enter to channel %d\n", conf
->channel
->hw_value
);
2194 priv
->current_ht_config
.is_ht
= conf_is_ht(conf
);
2196 if (conf
->radio_enabled
&& iwl_radio_kill_sw_enable_radio(priv
)) {
2197 IWL_DEBUG_MAC80211(priv
, "leave - RF-KILL - waiting for uCode\n");
2201 if (!conf
->radio_enabled
)
2202 iwl_radio_kill_sw_disable_radio(priv
);
2204 if (!iwl_is_ready(priv
)) {
2205 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2210 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2211 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2212 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
2213 mutex_unlock(&priv
->mutex
);
2217 channel
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
2218 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
, channel
);
2219 if (!is_channel_valid(ch_info
)) {
2220 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
2225 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2226 !is_channel_ibss(ch_info
)) {
2227 IWL_ERR(priv
, "channel %d in band %d not IBSS channel\n",
2228 conf
->channel
->hw_value
, conf
->channel
->band
);
2233 spin_lock_irqsave(&priv
->lock
, flags
);
2236 /* if we are switching from ht to 2.4 clear flags
2237 * from any ht related info since 2.4 does not
2239 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != channel
)
2240 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2241 && !(conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
)
2244 priv
->staging_rxon
.flags
= 0;
2246 iwl_set_rxon_channel(priv
, conf
->channel
);
2248 iwl_set_flags_for_band(priv
, conf
->channel
->band
);
2250 /* The list of supported rates and rate mask can be different
2251 * for each band; since the band may have changed, reset
2252 * the rate mask to what mac80211 lists */
2255 spin_unlock_irqrestore(&priv
->lock
, flags
);
2257 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2258 if (conf
->flags
& IEEE80211_CONF_CHANNEL_SWITCH
) {
2259 iwl_hw_channel_switch(priv
, conf
->channel
);
2264 if (!conf
->radio_enabled
) {
2265 IWL_DEBUG_MAC80211(priv
, "leave - radio disabled\n");
2269 if (iwl_is_rfkill(priv
)) {
2270 IWL_DEBUG_MAC80211(priv
, "leave - RF kill\n");
2275 if (conf
->flags
& IEEE80211_CONF_PS
)
2276 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_INDEX_3
);
2278 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_MODE_CAM
);
2280 IWL_DEBUG_MAC80211(priv
, "Error setting power level\n");
2282 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
2283 priv
->tx_power_user_lmt
, conf
->power_level
);
2285 iwl_set_tx_power(priv
, conf
->power_level
, false);
2289 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2290 iwl_set_rxon_chain(priv
);
2292 if (memcmp(&priv
->active_rxon
,
2293 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
2294 iwl_commit_rxon(priv
);
2296 IWL_DEBUG_INFO(priv
, "No re-sending same RXON configuration.\n");
2298 IWL_DEBUG_MAC80211(priv
, "leave\n");
2301 mutex_unlock(&priv
->mutex
);
2305 static void iwl_config_ap(struct iwl_priv
*priv
)
2308 unsigned long flags
;
2310 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2313 /* The following should be done only at AP bring up */
2314 if (!iwl_is_associated(priv
)) {
2316 /* RXON - unassoc (to set timing command) */
2317 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2318 iwl_commit_rxon(priv
);
2321 iwl_setup_rxon_timing(priv
);
2322 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2323 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2325 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2326 "Attempting to continue.\n");
2328 iwl_set_rxon_chain(priv
);
2330 /* FIXME: what should be the assoc_id for AP? */
2331 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2332 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2333 priv
->staging_rxon
.flags
|=
2334 RXON_FLG_SHORT_PREAMBLE_MSK
;
2336 priv
->staging_rxon
.flags
&=
2337 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2339 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2340 if (priv
->assoc_capability
&
2341 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2342 priv
->staging_rxon
.flags
|=
2343 RXON_FLG_SHORT_SLOT_MSK
;
2345 priv
->staging_rxon
.flags
&=
2346 ~RXON_FLG_SHORT_SLOT_MSK
;
2348 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2349 priv
->staging_rxon
.flags
&=
2350 ~RXON_FLG_SHORT_SLOT_MSK
;
2352 /* restore RXON assoc */
2353 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2354 iwl_commit_rxon(priv
);
2355 spin_lock_irqsave(&priv
->lock
, flags
);
2356 iwl_activate_qos(priv
, 1);
2357 spin_unlock_irqrestore(&priv
->lock
, flags
);
2358 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2360 iwl_send_beacon_cmd(priv
);
2362 /* FIXME - we need to add code here to detect a totally new
2363 * configuration, reset the AP, unassoc, rxon timing, assoc,
2364 * clear sta table, add BCAST sta... */
2368 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
,
2369 struct ieee80211_vif
*vif
,
2370 struct ieee80211_if_conf
*conf
)
2372 struct iwl_priv
*priv
= hw
->priv
;
2378 if (priv
->vif
!= vif
) {
2379 IWL_DEBUG_MAC80211(priv
, "leave - priv->vif != vif\n");
2383 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2384 conf
->changed
& IEEE80211_IFCC_BEACON
) {
2385 struct sk_buff
*beacon
= ieee80211_beacon_get(hw
, vif
);
2388 mutex_lock(&priv
->mutex
);
2389 rc
= iwl_mac_beacon_update(hw
, beacon
);
2390 mutex_unlock(&priv
->mutex
);
2395 if (!iwl_is_alive(priv
))
2398 mutex_lock(&priv
->mutex
);
2401 IWL_DEBUG_MAC80211(priv
, "bssid: %pM\n", conf
->bssid
);
2404 * very dubious code was here; the probe filtering flag is never set:
2406 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2407 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2410 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2412 conf
->bssid
= priv
->mac_addr
;
2413 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
2414 IWL_DEBUG_MAC80211(priv
, "bssid was set to: %pM\n",
2417 if (priv
->ibss_beacon
)
2418 dev_kfree_skb(priv
->ibss_beacon
);
2420 priv
->ibss_beacon
= ieee80211_beacon_get(hw
, vif
);
2423 if (iwl_is_rfkill(priv
))
2426 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
2427 !is_multicast_ether_addr(conf
->bssid
)) {
2428 /* If there is currently a HW scan going on in the background
2429 * then we need to cancel it else the RXON below will fail. */
2430 if (iwl_scan_cancel_timeout(priv
, 100)) {
2431 IWL_WARN(priv
, "Aborted scan still in progress "
2433 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
2434 mutex_unlock(&priv
->mutex
);
2437 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
2439 /* TODO: Audit driver for usage of these members and see
2440 * if mac80211 deprecates them (priv->bssid looks like it
2441 * shouldn't be there, but I haven't scanned the IBSS code
2442 * to verify) - jpk */
2443 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
2445 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2446 iwl_config_ap(priv
);
2448 rc
= iwl_commit_rxon(priv
);
2449 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && rc
)
2450 iwl_rxon_add_station(
2451 priv
, priv
->active_rxon
.bssid_addr
, 1);
2455 iwl_scan_cancel_timeout(priv
, 100);
2456 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2457 iwl_commit_rxon(priv
);
2461 IWL_DEBUG_MAC80211(priv
, "leave\n");
2462 mutex_unlock(&priv
->mutex
);
2467 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
2468 struct ieee80211_if_init_conf
*conf
)
2470 struct iwl_priv
*priv
= hw
->priv
;
2472 IWL_DEBUG_MAC80211(priv
, "enter\n");
2474 mutex_lock(&priv
->mutex
);
2476 if (iwl_is_ready_rf(priv
)) {
2477 iwl_scan_cancel_timeout(priv
, 100);
2478 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2479 iwl_commit_rxon(priv
);
2481 if (priv
->vif
== conf
->vif
) {
2483 memset(priv
->bssid
, 0, ETH_ALEN
);
2485 mutex_unlock(&priv
->mutex
);
2487 IWL_DEBUG_MAC80211(priv
, "leave\n");
2491 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2492 static void iwl_bss_info_changed(struct ieee80211_hw
*hw
,
2493 struct ieee80211_vif
*vif
,
2494 struct ieee80211_bss_conf
*bss_conf
,
2497 struct iwl_priv
*priv
= hw
->priv
;
2499 IWL_DEBUG_MAC80211(priv
, "changes = 0x%X\n", changes
);
2501 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
2502 IWL_DEBUG_MAC80211(priv
, "ERP_PREAMBLE %d\n",
2503 bss_conf
->use_short_preamble
);
2504 if (bss_conf
->use_short_preamble
)
2505 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2507 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2510 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
2511 IWL_DEBUG_MAC80211(priv
, "ERP_CTS %d\n", bss_conf
->use_cts_prot
);
2512 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
2513 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
2515 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
2518 if (changes
& BSS_CHANGED_HT
) {
2519 iwl_ht_conf(priv
, bss_conf
);
2520 iwl_set_rxon_chain(priv
);
2523 if (changes
& BSS_CHANGED_ASSOC
) {
2524 IWL_DEBUG_MAC80211(priv
, "ASSOC %d\n", bss_conf
->assoc
);
2525 /* This should never happen as this function should
2526 * never be called from interrupt context. */
2527 if (WARN_ON_ONCE(in_interrupt()))
2529 if (bss_conf
->assoc
) {
2530 priv
->assoc_id
= bss_conf
->aid
;
2531 priv
->beacon_int
= bss_conf
->beacon_int
;
2532 priv
->power_data
.dtim_period
= bss_conf
->dtim_period
;
2533 priv
->timestamp
= bss_conf
->timestamp
;
2534 priv
->assoc_capability
= bss_conf
->assoc_capability
;
2536 /* we have just associated, don't start scan too early
2537 * leave time for EAPOL exchange to complete
2539 priv
->next_scan_jiffies
= jiffies
+
2540 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
2541 mutex_lock(&priv
->mutex
);
2542 iwl_post_associate(priv
);
2543 mutex_unlock(&priv
->mutex
);
2546 IWL_DEBUG_MAC80211(priv
, "DISASSOC %d\n", bss_conf
->assoc
);
2548 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
2549 IWL_DEBUG_MAC80211(priv
, "Associated Changes %d\n", changes
);
2550 iwl_send_rxon_assoc(priv
);
2555 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
2556 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
2557 u32 iv32
, u16
*phase1key
)
2560 struct iwl_priv
*priv
= hw
->priv
;
2561 IWL_DEBUG_MAC80211(priv
, "enter\n");
2563 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
2565 IWL_DEBUG_MAC80211(priv
, "leave\n");
2568 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2569 struct ieee80211_vif
*vif
,
2570 struct ieee80211_sta
*sta
,
2571 struct ieee80211_key_conf
*key
)
2573 struct iwl_priv
*priv
= hw
->priv
;
2577 bool is_default_wep_key
= false;
2579 IWL_DEBUG_MAC80211(priv
, "enter\n");
2581 if (priv
->hw_params
.sw_crypto
) {
2582 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
2585 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
2586 sta_id
= iwl_find_station(priv
, addr
);
2587 if (sta_id
== IWL_INVALID_STATION
) {
2588 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
2594 mutex_lock(&priv
->mutex
);
2595 iwl_scan_cancel_timeout(priv
, 100);
2596 mutex_unlock(&priv
->mutex
);
2598 /* If we are getting WEP group key and we didn't receive any key mapping
2599 * so far, we are in legacy wep mode (group key only), otherwise we are
2601 * In legacy wep mode, we use another host command to the uCode */
2602 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
2603 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2605 is_default_wep_key
= !priv
->key_mapping_key
;
2607 is_default_wep_key
=
2608 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
2613 if (is_default_wep_key
)
2614 ret
= iwl_set_default_wep_key(priv
, key
);
2616 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
2618 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
2621 if (is_default_wep_key
)
2622 ret
= iwl_remove_default_wep_key(priv
, key
);
2624 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
2626 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
2632 IWL_DEBUG_MAC80211(priv
, "leave\n");
2637 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
2638 const struct ieee80211_tx_queue_params
*params
)
2640 struct iwl_priv
*priv
= hw
->priv
;
2641 unsigned long flags
;
2644 IWL_DEBUG_MAC80211(priv
, "enter\n");
2646 if (!iwl_is_ready_rf(priv
)) {
2647 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2651 if (queue
>= AC_NUM
) {
2652 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
2656 q
= AC_NUM
- 1 - queue
;
2658 spin_lock_irqsave(&priv
->lock
, flags
);
2660 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
2661 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
2662 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
2663 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
2664 cpu_to_le16((params
->txop
* 32));
2666 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
2667 priv
->qos_data
.qos_active
= 1;
2669 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2670 iwl_activate_qos(priv
, 1);
2671 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
2672 iwl_activate_qos(priv
, 0);
2674 spin_unlock_irqrestore(&priv
->lock
, flags
);
2676 IWL_DEBUG_MAC80211(priv
, "leave\n");
2680 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
2681 enum ieee80211_ampdu_mlme_action action
,
2682 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
2684 struct iwl_priv
*priv
= hw
->priv
;
2686 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
2689 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
2693 case IEEE80211_AMPDU_RX_START
:
2694 IWL_DEBUG_HT(priv
, "start Rx\n");
2695 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
2696 case IEEE80211_AMPDU_RX_STOP
:
2697 IWL_DEBUG_HT(priv
, "stop Rx\n");
2698 return iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
2699 case IEEE80211_AMPDU_TX_START
:
2700 IWL_DEBUG_HT(priv
, "start Tx\n");
2701 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
2702 case IEEE80211_AMPDU_TX_STOP
:
2703 IWL_DEBUG_HT(priv
, "stop Tx\n");
2704 return iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
2706 IWL_DEBUG_HT(priv
, "unknown\n");
2713 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
2714 struct ieee80211_tx_queue_stats
*stats
)
2716 struct iwl_priv
*priv
= hw
->priv
;
2718 struct iwl_tx_queue
*txq
;
2719 struct iwl_queue
*q
;
2720 unsigned long flags
;
2722 IWL_DEBUG_MAC80211(priv
, "enter\n");
2724 if (!iwl_is_ready_rf(priv
)) {
2725 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2729 spin_lock_irqsave(&priv
->lock
, flags
);
2731 for (i
= 0; i
< AC_NUM
; i
++) {
2732 txq
= &priv
->txq
[i
];
2734 avail
= iwl_queue_space(q
);
2736 stats
[i
].len
= q
->n_window
- avail
;
2737 stats
[i
].limit
= q
->n_window
- q
->high_mark
;
2738 stats
[i
].count
= q
->n_window
;
2741 spin_unlock_irqrestore(&priv
->lock
, flags
);
2743 IWL_DEBUG_MAC80211(priv
, "leave\n");
2748 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
2749 struct ieee80211_low_level_stats
*stats
)
2751 struct iwl_priv
*priv
= hw
->priv
;
2754 IWL_DEBUG_MAC80211(priv
, "enter\n");
2755 IWL_DEBUG_MAC80211(priv
, "leave\n");
2760 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
2762 struct iwl_priv
*priv
= hw
->priv
;
2763 unsigned long flags
;
2765 mutex_lock(&priv
->mutex
);
2766 IWL_DEBUG_MAC80211(priv
, "enter\n");
2768 spin_lock_irqsave(&priv
->lock
, flags
);
2769 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
2770 spin_unlock_irqrestore(&priv
->lock
, flags
);
2772 iwl_reset_qos(priv
);
2774 spin_lock_irqsave(&priv
->lock
, flags
);
2776 priv
->assoc_capability
= 0;
2777 priv
->assoc_station_added
= 0;
2779 /* new association get rid of ibss beacon skb */
2780 if (priv
->ibss_beacon
)
2781 dev_kfree_skb(priv
->ibss_beacon
);
2783 priv
->ibss_beacon
= NULL
;
2785 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
2786 priv
->timestamp
= 0;
2787 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
))
2788 priv
->beacon_int
= 0;
2790 spin_unlock_irqrestore(&priv
->lock
, flags
);
2792 if (!iwl_is_ready_rf(priv
)) {
2793 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2794 mutex_unlock(&priv
->mutex
);
2798 /* we are restarting association process
2799 * clear RXON_FILTER_ASSOC_MSK bit
2801 if (priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2802 iwl_scan_cancel_timeout(priv
, 100);
2803 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2804 iwl_commit_rxon(priv
);
2807 iwl_power_update_mode(priv
, 0);
2809 /* Per mac80211.h: This is only used in IBSS mode... */
2810 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2812 /* switch to CAM during association period.
2813 * the ucode will block any association/authentication
2814 * frome during assiciation period if it can not hear
2815 * the AP because of PM. the timer enable PM back is
2816 * association do not complete
2818 if (priv
->hw
->conf
.channel
->flags
& (IEEE80211_CHAN_PASSIVE_SCAN
|
2819 IEEE80211_CHAN_RADAR
))
2820 iwl_power_disable_management(priv
, 3000);
2822 IWL_DEBUG_MAC80211(priv
, "leave - not in IBSS\n");
2823 mutex_unlock(&priv
->mutex
);
2829 mutex_unlock(&priv
->mutex
);
2831 IWL_DEBUG_MAC80211(priv
, "leave\n");
2834 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2836 struct iwl_priv
*priv
= hw
->priv
;
2837 unsigned long flags
;
2840 IWL_DEBUG_MAC80211(priv
, "enter\n");
2842 if (!iwl_is_ready_rf(priv
)) {
2843 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2847 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2848 IWL_DEBUG_MAC80211(priv
, "leave - not IBSS\n");
2852 spin_lock_irqsave(&priv
->lock
, flags
);
2854 if (priv
->ibss_beacon
)
2855 dev_kfree_skb(priv
->ibss_beacon
);
2857 priv
->ibss_beacon
= skb
;
2860 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
2861 priv
->timestamp
= le64_to_cpu(timestamp
);
2863 IWL_DEBUG_MAC80211(priv
, "leave\n");
2864 spin_unlock_irqrestore(&priv
->lock
, flags
);
2866 iwl_reset_qos(priv
);
2868 iwl_post_associate(priv
);
2874 /*****************************************************************************
2878 *****************************************************************************/
2880 #ifdef CONFIG_IWLWIFI_DEBUG
2883 * The following adds a new attribute to the sysfs representation
2884 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2885 * used for controlling the debug level.
2887 * See the level definitions in iwl for details.
2890 static ssize_t
show_debug_level(struct device
*d
,
2891 struct device_attribute
*attr
, char *buf
)
2893 struct iwl_priv
*priv
= d
->driver_data
;
2895 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
2897 static ssize_t
store_debug_level(struct device
*d
,
2898 struct device_attribute
*attr
,
2899 const char *buf
, size_t count
)
2901 struct iwl_priv
*priv
= d
->driver_data
;
2905 ret
= strict_strtoul(buf
, 0, &val
);
2907 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
2909 priv
->debug_level
= val
;
2911 return strnlen(buf
, count
);
2914 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
2915 show_debug_level
, store_debug_level
);
2918 #endif /* CONFIG_IWLWIFI_DEBUG */
2921 static ssize_t
show_version(struct device
*d
,
2922 struct device_attribute
*attr
, char *buf
)
2924 struct iwl_priv
*priv
= d
->driver_data
;
2925 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
2929 if (palive
->is_valid
)
2930 pos
+= sprintf(buf
+ pos
,
2931 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2932 "fw type: 0x%01X 0x%01X\n",
2933 palive
->ucode_major
, palive
->ucode_minor
,
2934 palive
->sw_rev
[0], palive
->sw_rev
[1],
2935 palive
->ver_type
, palive
->ver_subtype
);
2937 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
2940 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
2941 pos
+= sprintf(buf
+ pos
, "EEPROM version: 0x%x\n",
2944 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
2950 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
2952 static ssize_t
show_temperature(struct device
*d
,
2953 struct device_attribute
*attr
, char *buf
)
2955 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2957 if (!iwl_is_alive(priv
))
2960 return sprintf(buf
, "%d\n", priv
->temperature
);
2963 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
2965 static ssize_t
show_tx_power(struct device
*d
,
2966 struct device_attribute
*attr
, char *buf
)
2968 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2970 if (!iwl_is_ready_rf(priv
))
2971 return sprintf(buf
, "off\n");
2973 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
2976 static ssize_t
store_tx_power(struct device
*d
,
2977 struct device_attribute
*attr
,
2978 const char *buf
, size_t count
)
2980 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2984 ret
= strict_strtoul(buf
, 10, &val
);
2986 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
2988 iwl_set_tx_power(priv
, val
, false);
2993 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
2995 static ssize_t
show_flags(struct device
*d
,
2996 struct device_attribute
*attr
, char *buf
)
2998 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3000 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3003 static ssize_t
store_flags(struct device
*d
,
3004 struct device_attribute
*attr
,
3005 const char *buf
, size_t count
)
3007 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3010 int ret
= strict_strtoul(buf
, 0, &val
);
3015 mutex_lock(&priv
->mutex
);
3016 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3017 /* Cancel any currently running scans... */
3018 if (iwl_scan_cancel_timeout(priv
, 100))
3019 IWL_WARN(priv
, "Could not cancel scan.\n");
3021 IWL_DEBUG_INFO(priv
, "Commit rxon.flags = 0x%04X\n", flags
);
3022 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3023 iwl_commit_rxon(priv
);
3026 mutex_unlock(&priv
->mutex
);
3031 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3033 static ssize_t
show_filter_flags(struct device
*d
,
3034 struct device_attribute
*attr
, char *buf
)
3036 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3038 return sprintf(buf
, "0x%04X\n",
3039 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3042 static ssize_t
store_filter_flags(struct device
*d
,
3043 struct device_attribute
*attr
,
3044 const char *buf
, size_t count
)
3046 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3049 int ret
= strict_strtoul(buf
, 0, &val
);
3052 filter_flags
= (u32
)val
;
3054 mutex_lock(&priv
->mutex
);
3055 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3056 /* Cancel any currently running scans... */
3057 if (iwl_scan_cancel_timeout(priv
, 100))
3058 IWL_WARN(priv
, "Could not cancel scan.\n");
3060 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3061 "0x%04X\n", filter_flags
);
3062 priv
->staging_rxon
.filter_flags
=
3063 cpu_to_le32(filter_flags
);
3064 iwl_commit_rxon(priv
);
3067 mutex_unlock(&priv
->mutex
);
3072 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3073 store_filter_flags
);
3075 static ssize_t
store_power_level(struct device
*d
,
3076 struct device_attribute
*attr
,
3077 const char *buf
, size_t count
)
3079 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3084 mutex_lock(&priv
->mutex
);
3086 if (!iwl_is_ready(priv
)) {
3091 ret
= strict_strtoul(buf
, 10, &mode
);
3095 ret
= iwl_power_set_user_mode(priv
, mode
);
3097 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3103 mutex_unlock(&priv
->mutex
);
3107 static ssize_t
show_power_level(struct device
*d
,
3108 struct device_attribute
*attr
, char *buf
)
3110 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3111 int mode
= priv
->power_data
.user_power_setting
;
3112 int system
= priv
->power_data
.system_power_setting
;
3113 int level
= priv
->power_data
.power_mode
;
3117 case IWL_POWER_SYS_AUTO
:
3118 p
+= sprintf(p
, "SYSTEM:auto");
3120 case IWL_POWER_SYS_AC
:
3121 p
+= sprintf(p
, "SYSTEM:ac");
3123 case IWL_POWER_SYS_BATTERY
:
3124 p
+= sprintf(p
, "SYSTEM:battery");
3128 p
+= sprintf(p
, "\tMODE:%s", (mode
< IWL_POWER_AUTO
) ?
3130 p
+= sprintf(p
, "\tINDEX:%d", level
);
3131 p
+= sprintf(p
, "\n");
3135 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
3139 static ssize_t
show_statistics(struct device
*d
,
3140 struct device_attribute
*attr
, char *buf
)
3142 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3143 u32 size
= sizeof(struct iwl_notif_statistics
);
3144 u32 len
= 0, ofs
= 0;
3145 u8
*data
= (u8
*)&priv
->statistics
;
3148 if (!iwl_is_alive(priv
))
3151 mutex_lock(&priv
->mutex
);
3152 rc
= iwl_send_statistics_request(priv
, 0);
3153 mutex_unlock(&priv
->mutex
);
3157 "Error sending statistics request: 0x%08X\n", rc
);
3161 while (size
&& (PAGE_SIZE
- len
)) {
3162 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3163 PAGE_SIZE
- len
, 1);
3165 if (PAGE_SIZE
- len
)
3169 size
-= min(size
, 16U);
3175 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3178 /*****************************************************************************
3180 * driver setup and teardown
3182 *****************************************************************************/
3184 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3186 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3188 init_waitqueue_head(&priv
->wait_command_queue
);
3190 INIT_WORK(&priv
->up
, iwl_bg_up
);
3191 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3192 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3193 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
3194 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3195 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3196 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3197 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3199 iwl_setup_scan_deferred_work(priv
);
3200 iwl_setup_power_deferred_work(priv
);
3202 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3203 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3205 init_timer(&priv
->statistics_periodic
);
3206 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3207 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3209 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3210 iwl_irq_tasklet
, (unsigned long)priv
);
3213 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3215 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3216 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3218 cancel_delayed_work_sync(&priv
->init_alive_start
);
3219 cancel_delayed_work(&priv
->scan_check
);
3220 cancel_delayed_work_sync(&priv
->set_power_save
);
3221 cancel_delayed_work(&priv
->alive_start
);
3222 cancel_work_sync(&priv
->beacon_update
);
3223 del_timer_sync(&priv
->statistics_periodic
);
3226 static struct attribute
*iwl_sysfs_entries
[] = {
3227 &dev_attr_flags
.attr
,
3228 &dev_attr_filter_flags
.attr
,
3229 &dev_attr_power_level
.attr
,
3230 &dev_attr_statistics
.attr
,
3231 &dev_attr_temperature
.attr
,
3232 &dev_attr_tx_power
.attr
,
3233 #ifdef CONFIG_IWLWIFI_DEBUG
3234 &dev_attr_debug_level
.attr
,
3236 &dev_attr_version
.attr
,
3241 static struct attribute_group iwl_attribute_group
= {
3242 .name
= NULL
, /* put in device directory */
3243 .attrs
= iwl_sysfs_entries
,
3246 static struct ieee80211_ops iwl_hw_ops
= {
3248 .start
= iwl_mac_start
,
3249 .stop
= iwl_mac_stop
,
3250 .add_interface
= iwl_mac_add_interface
,
3251 .remove_interface
= iwl_mac_remove_interface
,
3252 .config
= iwl_mac_config
,
3253 .config_interface
= iwl_mac_config_interface
,
3254 .configure_filter
= iwl_configure_filter
,
3255 .set_key
= iwl_mac_set_key
,
3256 .update_tkip_key
= iwl_mac_update_tkip_key
,
3257 .get_stats
= iwl_mac_get_stats
,
3258 .get_tx_stats
= iwl_mac_get_tx_stats
,
3259 .conf_tx
= iwl_mac_conf_tx
,
3260 .reset_tsf
= iwl_mac_reset_tsf
,
3261 .bss_info_changed
= iwl_bss_info_changed
,
3262 .ampdu_action
= iwl_mac_ampdu_action
,
3263 .hw_scan
= iwl_mac_hw_scan
3266 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3269 struct iwl_priv
*priv
;
3270 struct ieee80211_hw
*hw
;
3271 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3272 unsigned long flags
;
3275 /************************
3276 * 1. Allocating HW data
3277 ************************/
3279 /* Disabling hardware scan means that mac80211 will perform scans
3280 * "the hard way", rather than using device's scan. */
3281 if (cfg
->mod_params
->disable_hw_scan
) {
3282 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
3283 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3284 "Disabling hw_scan\n");
3285 iwl_hw_ops
.hw_scan
= NULL
;
3288 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3294 /* At this point both hw and priv are allocated. */
3296 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3298 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3300 priv
->pci_dev
= pdev
;
3302 #ifdef CONFIG_IWLWIFI_DEBUG
3303 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
3304 atomic_set(&priv
->restrict_refcnt
, 0);
3307 /**************************
3308 * 2. Initializing PCI bus
3309 **************************/
3310 if (pci_enable_device(pdev
)) {
3312 goto out_ieee80211_free_hw
;
3315 pci_set_master(pdev
);
3317 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3319 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3321 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3323 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3324 /* both attempts failed: */
3326 IWL_WARN(priv
, "No suitable DMA available.\n");
3327 goto out_pci_disable_device
;
3331 err
= pci_request_regions(pdev
, DRV_NAME
);
3333 goto out_pci_disable_device
;
3335 pci_set_drvdata(pdev
, priv
);
3338 /***********************
3339 * 3. Read REV register
3340 ***********************/
3341 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3342 if (!priv
->hw_base
) {
3344 goto out_pci_release_regions
;
3347 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3348 (unsigned long long) pci_resource_len(pdev
, 0));
3349 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3351 iwl_hw_detect(priv
);
3352 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3353 priv
->cfg
->name
, priv
->hw_rev
);
3355 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3356 * PCI Tx retries from interfering with C3 CPU state */
3357 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3360 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
3362 IWL_DEBUG_INFO(priv
, "Failed to init APMG\n");
3368 /* Read the EEPROM */
3369 err
= iwl_eeprom_init(priv
);
3371 IWL_ERR(priv
, "Unable to init EEPROM\n");
3374 err
= iwl_eeprom_check_version(priv
);
3376 goto out_free_eeprom
;
3378 /* extract MAC Address */
3379 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
3380 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
3381 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
3383 /************************
3384 * 5. Setup HW constants
3385 ************************/
3386 if (iwl_set_hw_params(priv
)) {
3387 IWL_ERR(priv
, "failed to set hw parameters\n");
3388 goto out_free_eeprom
;
3391 /*******************
3393 *******************/
3395 err
= iwl_init_drv(priv
);
3397 goto out_free_eeprom
;
3398 /* At this point both hw and priv are initialized. */
3400 /**********************************
3401 * 7. Initialize module parameters
3402 **********************************/
3404 /* Disable radio (SW RF KILL) via parameter when loading driver */
3405 if (priv
->cfg
->mod_params
->disable
) {
3406 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3407 IWL_DEBUG_INFO(priv
, "Radio disabled.\n");
3410 /********************
3412 ********************/
3413 spin_lock_irqsave(&priv
->lock
, flags
);
3414 iwl_disable_interrupts(priv
);
3415 spin_unlock_irqrestore(&priv
->lock
, flags
);
3417 pci_enable_msi(priv
->pci_dev
);
3419 err
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
3422 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
3423 goto out_disable_msi
;
3425 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3427 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3431 iwl_setup_deferred_work(priv
);
3432 iwl_setup_rx_handlers(priv
);
3434 /**********************************
3435 * 9. Setup and register mac80211
3436 **********************************/
3438 /* enable interrupts if needed: hw bug w/a */
3439 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3440 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3441 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3442 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3445 iwl_enable_interrupts(priv
);
3447 err
= iwl_setup_mac(priv
);
3449 goto out_remove_sysfs
;
3451 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
3453 IWL_ERR(priv
, "failed to create debugfs files\n");
3455 /* If platform's RF_KILL switch is NOT set to KILL */
3456 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3457 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3459 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3461 err
= iwl_rfkill_init(priv
);
3463 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
3464 "Ignoring error: %d\n", err
);
3466 iwl_rfkill_set_hw_state(priv
);
3468 iwl_power_initialize(priv
);
3472 destroy_workqueue(priv
->workqueue
);
3473 priv
->workqueue
= NULL
;
3474 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3476 free_irq(priv
->pci_dev
->irq
, priv
);
3478 pci_disable_msi(priv
->pci_dev
);
3479 iwl_uninit_drv(priv
);
3481 iwl_eeprom_free(priv
);
3483 pci_iounmap(pdev
, priv
->hw_base
);
3484 out_pci_release_regions
:
3485 pci_release_regions(pdev
);
3486 pci_set_drvdata(pdev
, NULL
);
3487 out_pci_disable_device
:
3488 pci_disable_device(pdev
);
3489 out_ieee80211_free_hw
:
3490 ieee80211_free_hw(priv
->hw
);
3495 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3497 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3498 unsigned long flags
;
3503 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3505 iwl_dbgfs_unregister(priv
);
3506 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3508 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3509 * to be called and iwl_down since we are removing the device
3510 * we need to set STATUS_EXIT_PENDING bit.
3512 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3513 if (priv
->mac80211_registered
) {
3514 ieee80211_unregister_hw(priv
->hw
);
3515 priv
->mac80211_registered
= 0;
3520 /* make sure we flush any pending irq or
3521 * tasklet for the driver
3523 spin_lock_irqsave(&priv
->lock
, flags
);
3524 iwl_disable_interrupts(priv
);
3525 spin_unlock_irqrestore(&priv
->lock
, flags
);
3527 iwl_synchronize_irq(priv
);
3529 iwl_rfkill_unregister(priv
);
3530 iwl_dealloc_ucode_pci(priv
);
3533 iwl_rx_queue_free(priv
, &priv
->rxq
);
3534 iwl_hw_txq_ctx_free(priv
);
3536 iwl_clear_stations_table(priv
);
3537 iwl_eeprom_free(priv
);
3540 /*netif_stop_queue(dev); */
3541 flush_workqueue(priv
->workqueue
);
3543 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3544 * priv->workqueue... so we can't take down the workqueue
3546 destroy_workqueue(priv
->workqueue
);
3547 priv
->workqueue
= NULL
;
3549 free_irq(priv
->pci_dev
->irq
, priv
);
3550 pci_disable_msi(priv
->pci_dev
);
3551 pci_iounmap(pdev
, priv
->hw_base
);
3552 pci_release_regions(pdev
);
3553 pci_disable_device(pdev
);
3554 pci_set_drvdata(pdev
, NULL
);
3556 iwl_uninit_drv(priv
);
3558 if (priv
->ibss_beacon
)
3559 dev_kfree_skb(priv
->ibss_beacon
);
3561 ieee80211_free_hw(priv
->hw
);
3566 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3568 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3570 if (priv
->is_open
) {
3571 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3572 iwl_mac_stop(priv
->hw
);
3576 pci_save_state(pdev
);
3577 pci_disable_device(pdev
);
3578 pci_set_power_state(pdev
, PCI_D3hot
);
3583 static int iwl_pci_resume(struct pci_dev
*pdev
)
3585 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3588 pci_set_power_state(pdev
, PCI_D0
);
3589 ret
= pci_enable_device(pdev
);
3592 pci_restore_state(pdev
);
3593 iwl_enable_interrupts(priv
);
3596 iwl_mac_start(priv
->hw
);
3598 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3602 #endif /* CONFIG_PM */
3604 /*****************************************************************************
3606 * driver and module entry point
3608 *****************************************************************************/
3610 /* Hardware specific file defines the PCI IDs table for that hardware module */
3611 static struct pci_device_id iwl_hw_card_ids
[] = {
3612 #ifdef CONFIG_IWL4965
3613 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3614 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3615 #endif /* CONFIG_IWL4965 */
3616 #ifdef CONFIG_IWL5000
3617 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
3618 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
3619 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
3620 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
3621 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
3622 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
3623 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3624 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3625 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3626 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3627 /* 5350 WiFi/WiMax */
3628 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
3629 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
3630 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
3631 /* 5150 Wifi/WiMax */
3632 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3633 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3634 /* 6000/6050 Series */
3635 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg
)},
3636 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg
)},
3637 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg
)},
3638 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3639 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3640 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3641 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3642 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3643 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3644 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3645 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3646 /* 100 Series WiFi */
3647 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID
, iwl100_bgn_cfg
)},
3648 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID
, iwl100_bgn_cfg
)},
3649 #endif /* CONFIG_IWL5000 */
3653 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
3655 static struct pci_driver iwl_driver
= {
3657 .id_table
= iwl_hw_card_ids
,
3658 .probe
= iwl_pci_probe
,
3659 .remove
= __devexit_p(iwl_pci_remove
),
3661 .suspend
= iwl_pci_suspend
,
3662 .resume
= iwl_pci_resume
,
3666 static int __init
iwl_init(void)
3670 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3671 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
3673 ret
= iwlagn_rate_control_register();
3675 printk(KERN_ERR DRV_NAME
3676 "Unable to register rate control algorithm: %d\n", ret
);
3680 ret
= pci_register_driver(&iwl_driver
);
3682 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
3683 goto error_register
;
3689 iwlagn_rate_control_unregister();
3693 static void __exit
iwl_exit(void)
3695 pci_unregister_driver(&iwl_driver
);
3696 iwlagn_rate_control_unregister();
3699 module_exit(iwl_exit
);
3700 module_init(iwl_init
);