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 iwl_commit_rxon(priv
);
677 /******************************************************************************
679 * Generic RX handler implementations
681 ******************************************************************************/
682 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
683 struct iwl_rx_mem_buffer
*rxb
)
685 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
686 struct iwl_alive_resp
*palive
;
687 struct delayed_work
*pwork
;
689 palive
= &pkt
->u
.alive_frame
;
691 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
693 palive
->is_valid
, palive
->ver_type
,
694 palive
->ver_subtype
);
696 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
697 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
698 memcpy(&priv
->card_alive_init
,
700 sizeof(struct iwl_init_alive_resp
));
701 pwork
= &priv
->init_alive_start
;
703 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
704 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
705 sizeof(struct iwl_alive_resp
));
706 pwork
= &priv
->alive_start
;
709 /* We delay the ALIVE response by 5ms to
710 * give the HW RF Kill time to activate... */
711 if (palive
->is_valid
== UCODE_VALID_OK
)
712 queue_delayed_work(priv
->workqueue
, pwork
,
713 msecs_to_jiffies(5));
715 IWL_WARN(priv
, "uCode did not respond OK.\n");
718 static void iwl_bg_beacon_update(struct work_struct
*work
)
720 struct iwl_priv
*priv
=
721 container_of(work
, struct iwl_priv
, beacon_update
);
722 struct sk_buff
*beacon
;
724 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
725 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
728 IWL_ERR(priv
, "update beacon failed\n");
732 mutex_lock(&priv
->mutex
);
733 /* new beacon skb is allocated every time; dispose previous.*/
734 if (priv
->ibss_beacon
)
735 dev_kfree_skb(priv
->ibss_beacon
);
737 priv
->ibss_beacon
= beacon
;
738 mutex_unlock(&priv
->mutex
);
740 iwl_send_beacon_cmd(priv
);
744 * iwl_bg_statistics_periodic - Timer callback to queue statistics
746 * This callback is provided in order to send a statistics request.
748 * This timer function is continually reset to execute within
749 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
750 * was received. We need to ensure we receive the statistics in order
751 * to update the temperature used for calibrating the TXPOWER.
753 static void iwl_bg_statistics_periodic(unsigned long data
)
755 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
757 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
760 /* dont send host command if rf-kill is on */
761 if (!iwl_is_ready_rf(priv
))
764 iwl_send_statistics_request(priv
, CMD_ASYNC
);
767 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
768 struct iwl_rx_mem_buffer
*rxb
)
770 #ifdef CONFIG_IWLWIFI_DEBUG
771 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
772 struct iwl4965_beacon_notif
*beacon
=
773 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
774 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
776 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
777 "tsf %d %d rate %d\n",
778 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
779 beacon
->beacon_notify_hdr
.failure_frame
,
780 le32_to_cpu(beacon
->ibss_mgr_status
),
781 le32_to_cpu(beacon
->high_tsf
),
782 le32_to_cpu(beacon
->low_tsf
), rate
);
785 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
786 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
787 queue_work(priv
->workqueue
, &priv
->beacon_update
);
790 /* Handle notification from uCode that card's power state is changing
791 * due to software, hardware, or critical temperature RFKILL */
792 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
793 struct iwl_rx_mem_buffer
*rxb
)
795 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
796 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
797 unsigned long status
= priv
->status
;
799 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
800 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
801 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
803 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
806 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
807 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
809 if (!iwl_grab_nic_access(priv
)) {
811 priv
, HBUS_TARG_MBX_C
,
812 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
814 iwl_release_nic_access(priv
);
817 if (!(flags
& RXON_CARD_DISABLED
)) {
818 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
819 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
820 if (!iwl_grab_nic_access(priv
)) {
822 priv
, HBUS_TARG_MBX_C
,
823 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
825 iwl_release_nic_access(priv
);
829 if (flags
& RF_CARD_DISABLED
) {
830 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
831 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
832 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
833 if (!iwl_grab_nic_access(priv
))
834 iwl_release_nic_access(priv
);
838 if (flags
& HW_CARD_DISABLED
)
839 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
841 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
844 if (flags
& SW_CARD_DISABLED
)
845 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
847 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
849 if (!(flags
& RXON_CARD_DISABLED
))
850 iwl_scan_cancel(priv
);
852 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
853 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
854 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
855 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
856 queue_work(priv
->workqueue
, &priv
->rf_kill
);
858 wake_up_interruptible(&priv
->wait_command_queue
);
861 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
866 spin_lock_irqsave(&priv
->lock
, flags
);
867 ret
= iwl_grab_nic_access(priv
);
871 if (src
== IWL_PWR_SRC_VAUX
) {
872 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
873 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
874 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
875 ~APMG_PS_CTRL_MSK_PWR_SRC
);
877 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
878 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
879 ~APMG_PS_CTRL_MSK_PWR_SRC
);
882 iwl_release_nic_access(priv
);
884 spin_unlock_irqrestore(&priv
->lock
, flags
);
889 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
891 * Setup the RX handlers for each of the reply types sent from the uCode
894 * This function chains into the hardware specific files for them to setup
895 * any hardware specific handlers as well.
897 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
899 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
900 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
901 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
902 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
903 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
904 iwl_rx_pm_debug_statistics_notif
;
905 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
908 * The same handler is used for both the REPLY to a discrete
909 * statistics request from the host as well as for the periodic
910 * statistics notifications (after received beacons) from the uCode.
912 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
913 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
915 iwl_setup_spectrum_handlers(priv
);
916 iwl_setup_rx_scan_handlers(priv
);
918 /* status change handler */
919 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
921 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
922 iwl_rx_missed_beacon_notif
;
924 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
925 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
927 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
928 /* Set up hardware specific Rx handlers */
929 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
933 * iwl_rx_handle - Main entry function for receiving responses from uCode
935 * Uses the priv->rx_handlers callback function array to invoke
936 * the appropriate handlers, including command responses,
937 * frame-received notifications, and other notifications.
939 void iwl_rx_handle(struct iwl_priv
*priv
)
941 struct iwl_rx_mem_buffer
*rxb
;
942 struct iwl_rx_packet
*pkt
;
943 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
950 /* uCode's read index (stored in shared DRAM) indicates the last Rx
951 * buffer that the driver may process (last buffer filled by ucode). */
952 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
955 /* Rx interrupt, but nothing sent from uCode */
957 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
959 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
965 /* If an RXB doesn't have a Rx queue slot associated with it,
966 * then a bug has been introduced in the queue refilling
967 * routines -- catch it here */
970 rxq
->queue
[i
] = NULL
;
972 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
973 priv
->hw_params
.rx_buf_size
+ 256,
975 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
977 /* Reclaim a command buffer only if this packet is a response
978 * to a (driver-originated) command.
979 * If the packet (e.g. Rx frame) originated from uCode,
980 * there is no command buffer to reclaim.
981 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
982 * but apparently a few don't get set; catch them here. */
983 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
984 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
985 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
986 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
987 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
988 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
989 (pkt
->hdr
.cmd
!= REPLY_TX
);
991 /* Based on type of command response or notification,
992 * handle those that need handling via function in
993 * rx_handlers table. See iwl_setup_rx_handlers() */
994 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
995 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
996 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
997 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
999 /* No handling needed */
1001 "r %d i %d No handler needed for %s, 0x%02x\n",
1002 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
1007 /* Invoke any callbacks, transfer the skb to caller, and
1008 * fire off the (possibly) blocking iwl_send_cmd()
1009 * as we reclaim the driver command queue */
1010 if (rxb
&& rxb
->skb
)
1011 iwl_tx_cmd_complete(priv
, rxb
);
1013 IWL_WARN(priv
, "Claim null rxb?\n");
1016 /* For now we just don't re-use anything. We can tweak this
1017 * later to try and re-use notification packets and SKBs that
1018 * fail to Rx correctly */
1019 if (rxb
->skb
!= NULL
) {
1020 priv
->alloc_rxb_skb
--;
1021 dev_kfree_skb_any(rxb
->skb
);
1025 spin_lock_irqsave(&rxq
->lock
, flags
);
1026 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
1027 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1028 i
= (i
+ 1) & RX_QUEUE_MASK
;
1029 /* If there are a lot of unused frames,
1030 * restock the Rx queue so ucode wont assert. */
1035 iwl_rx_queue_restock(priv
);
1041 /* Backtrack one entry */
1043 iwl_rx_queue_restock(priv
);
1046 /* call this function to flush any scheduled tasklet */
1047 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1049 /* wait to make sure we flush pending tasklet*/
1050 synchronize_irq(priv
->pci_dev
->irq
);
1051 tasklet_kill(&priv
->irq_tasklet
);
1054 static void iwl_error_recovery(struct iwl_priv
*priv
)
1056 unsigned long flags
;
1058 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
1059 sizeof(priv
->staging_rxon
));
1060 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1061 iwl_commit_rxon(priv
);
1063 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
1065 spin_lock_irqsave(&priv
->lock
, flags
);
1066 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
1067 priv
->error_recovering
= 0;
1068 spin_unlock_irqrestore(&priv
->lock
, flags
);
1071 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1073 u32 inta
, handled
= 0;
1075 unsigned long flags
;
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1080 spin_lock_irqsave(&priv
->lock
, flags
);
1082 /* Ack/clear/reset pending uCode interrupts.
1083 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1084 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1085 inta
= iwl_read32(priv
, CSR_INT
);
1086 iwl_write32(priv
, CSR_INT
, inta
);
1088 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1089 * Any new interrupts that happen after this, either while we're
1090 * in this tasklet, or later, will show up in next ISR/tasklet. */
1091 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1092 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1094 #ifdef CONFIG_IWLWIFI_DEBUG
1095 if (priv
->debug_level
& IWL_DL_ISR
) {
1096 /* just for debug */
1097 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1098 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1099 inta
, inta_mask
, inta_fh
);
1103 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1104 * atomic, make sure that inta covers all the interrupts that
1105 * we've discovered, even if FH interrupt came in just after
1106 * reading CSR_INT. */
1107 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1108 inta
|= CSR_INT_BIT_FH_RX
;
1109 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1110 inta
|= CSR_INT_BIT_FH_TX
;
1112 /* Now service all interrupt bits discovered above. */
1113 if (inta
& CSR_INT_BIT_HW_ERR
) {
1114 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1116 /* Tell the device to stop sending interrupts */
1117 iwl_disable_interrupts(priv
);
1119 iwl_irq_handle_error(priv
);
1121 handled
|= CSR_INT_BIT_HW_ERR
;
1123 spin_unlock_irqrestore(&priv
->lock
, flags
);
1128 #ifdef CONFIG_IWLWIFI_DEBUG
1129 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1130 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1131 if (inta
& CSR_INT_BIT_SCD
)
1132 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1133 "the frame/frames.\n");
1135 /* Alive notification via Rx interrupt will do the real work */
1136 if (inta
& CSR_INT_BIT_ALIVE
)
1137 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1140 /* Safely ignore these bits for debug checks below */
1141 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1143 /* HW RF KILL switch toggled */
1144 if (inta
& CSR_INT_BIT_RF_KILL
) {
1146 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1147 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1150 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1151 hw_rf_kill
? "disable radio" : "enable radio");
1153 /* driver only loads ucode once setting the interface up.
1154 * the driver allows loading the ucode even if the radio
1155 * is killed. Hence update the killswitch state here. The
1156 * rfkill handler will care about restarting if needed.
1158 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1160 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1162 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1163 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1166 handled
|= CSR_INT_BIT_RF_KILL
;
1169 /* Chip got too hot and stopped itself */
1170 if (inta
& CSR_INT_BIT_CT_KILL
) {
1171 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1172 handled
|= CSR_INT_BIT_CT_KILL
;
1175 /* Error detected by uCode */
1176 if (inta
& CSR_INT_BIT_SW_ERR
) {
1177 IWL_ERR(priv
, "Microcode SW error detected. "
1178 " Restarting 0x%X.\n", inta
);
1179 iwl_irq_handle_error(priv
);
1180 handled
|= CSR_INT_BIT_SW_ERR
;
1183 /* uCode wakes up after power-down sleep */
1184 if (inta
& CSR_INT_BIT_WAKEUP
) {
1185 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1186 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1187 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1188 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1189 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1190 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1191 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1192 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1194 handled
|= CSR_INT_BIT_WAKEUP
;
1197 /* All uCode command responses, including Tx command responses,
1198 * Rx "responses" (frame-received notification), and other
1199 * notifications from uCode come through here*/
1200 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1201 iwl_rx_handle(priv
);
1202 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1205 if (inta
& CSR_INT_BIT_FH_TX
) {
1206 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1207 handled
|= CSR_INT_BIT_FH_TX
;
1208 /* FH finished to write, send event */
1209 priv
->ucode_write_complete
= 1;
1210 wake_up_interruptible(&priv
->wait_command_queue
);
1213 if (inta
& ~handled
)
1214 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1216 if (inta
& ~CSR_INI_SET_MASK
) {
1217 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1218 inta
& ~CSR_INI_SET_MASK
);
1219 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1222 /* Re-enable all interrupts */
1223 /* only Re-enable if diabled by irq */
1224 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1225 iwl_enable_interrupts(priv
);
1227 #ifdef CONFIG_IWLWIFI_DEBUG
1228 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1229 inta
= iwl_read32(priv
, CSR_INT
);
1230 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1231 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1232 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1233 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1236 spin_unlock_irqrestore(&priv
->lock
, flags
);
1239 /******************************************************************************
1241 * uCode download functions
1243 ******************************************************************************/
1245 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1247 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1248 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1249 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1250 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1251 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1252 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1255 static void iwl_nic_start(struct iwl_priv
*priv
)
1257 /* Remove all resets to allow NIC to operate */
1258 iwl_write32(priv
, CSR_RESET
, 0);
1263 * iwl_read_ucode - Read uCode images from disk file.
1265 * Copy into buffers for card to fetch via bus-mastering
1267 static int iwl_read_ucode(struct iwl_priv
*priv
)
1269 struct iwl_ucode
*ucode
;
1270 int ret
= -EINVAL
, index
;
1271 const struct firmware
*ucode_raw
;
1272 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1273 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1274 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1278 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1280 /* Ask kernel firmware_class module to get the boot firmware off disk.
1281 * request_firmware() is synchronous, file is in memory on return. */
1282 for (index
= api_max
; index
>= api_min
; index
--) {
1283 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1284 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1286 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
1293 if (index
< api_max
)
1294 IWL_ERR(priv
, "Loaded firmware %s, "
1295 "which is deprecated. "
1296 "Please use API v%u instead.\n",
1299 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file (%zd bytes) from disk\n",
1300 buf
, ucode_raw
->size
);
1308 /* Make sure that we got at least our header! */
1309 if (ucode_raw
->size
< sizeof(*ucode
)) {
1310 IWL_ERR(priv
, "File size way too small!\n");
1315 /* Data from ucode file: header followed by uCode images */
1316 ucode
= (void *)ucode_raw
->data
;
1318 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1319 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1320 inst_size
= le32_to_cpu(ucode
->inst_size
);
1321 data_size
= le32_to_cpu(ucode
->data_size
);
1322 init_size
= le32_to_cpu(ucode
->init_size
);
1323 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1324 boot_size
= le32_to_cpu(ucode
->boot_size
);
1326 /* api_ver should match the api version forming part of the
1327 * firmware filename ... but we don't check for that and only rely
1328 * on the API version read from firmware header from here on forward */
1330 if (api_ver
< api_min
|| api_ver
> api_max
) {
1331 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1332 "Driver supports v%u, firmware is v%u.\n",
1334 priv
->ucode_ver
= 0;
1338 if (api_ver
!= api_max
)
1339 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1340 "got v%u. New firmware can be obtained "
1341 "from http://www.intellinuxwireless.org.\n",
1344 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
1345 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1346 IWL_UCODE_MINOR(priv
->ucode_ver
),
1347 IWL_UCODE_API(priv
->ucode_ver
),
1348 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1350 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1352 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
1354 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
1356 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
1358 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
1360 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
1363 /* Verify size of file vs. image size info in file's header */
1364 if (ucode_raw
->size
< sizeof(*ucode
) +
1365 inst_size
+ data_size
+ init_size
+
1366 init_data_size
+ boot_size
) {
1368 IWL_DEBUG_INFO(priv
, "uCode file size %d too small\n",
1369 (int)ucode_raw
->size
);
1374 /* Verify that uCode images will fit in card's SRAM */
1375 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1376 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
1382 if (data_size
> priv
->hw_params
.max_data_size
) {
1383 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
1388 if (init_size
> priv
->hw_params
.max_inst_size
) {
1389 IWL_INFO(priv
, "uCode init instr len %d too large to fit in\n",
1394 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1395 IWL_INFO(priv
, "uCode init data len %d too large to fit in\n",
1400 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1401 IWL_INFO(priv
, "uCode boot instr len %d too large to fit in\n",
1407 /* Allocate ucode buffers for card's bus-master loading ... */
1409 /* Runtime instructions and 2 copies of data:
1410 * 1) unmodified from disk
1411 * 2) backup cache for save/restore during power-downs */
1412 priv
->ucode_code
.len
= inst_size
;
1413 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1415 priv
->ucode_data
.len
= data_size
;
1416 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1418 priv
->ucode_data_backup
.len
= data_size
;
1419 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1421 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1422 !priv
->ucode_data_backup
.v_addr
)
1425 /* Initialization instructions and data */
1426 if (init_size
&& init_data_size
) {
1427 priv
->ucode_init
.len
= init_size
;
1428 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1430 priv
->ucode_init_data
.len
= init_data_size
;
1431 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1433 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1437 /* Bootstrap (instructions only, no data) */
1439 priv
->ucode_boot
.len
= boot_size
;
1440 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1442 if (!priv
->ucode_boot
.v_addr
)
1446 /* Copy images into buffers for card's bus-master reads ... */
1448 /* Runtime instructions (first block of data in file) */
1449 src
= &ucode
->data
[0];
1450 len
= priv
->ucode_code
.len
;
1451 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n", len
);
1452 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1453 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1454 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1456 /* Runtime data (2nd block)
1457 * NOTE: Copy into backup buffer will be done in iwl_up() */
1458 src
= &ucode
->data
[inst_size
];
1459 len
= priv
->ucode_data
.len
;
1460 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n", len
);
1461 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1462 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1464 /* Initialization instructions (3rd block) */
1466 src
= &ucode
->data
[inst_size
+ data_size
];
1467 len
= priv
->ucode_init
.len
;
1468 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1470 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1473 /* Initialization data (4th block) */
1474 if (init_data_size
) {
1475 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1476 len
= priv
->ucode_init_data
.len
;
1477 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1479 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1482 /* Bootstrap instructions (5th block) */
1483 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1484 len
= priv
->ucode_boot
.len
;
1485 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n", len
);
1486 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1488 /* We have our copies now, allow OS release its copies */
1489 release_firmware(ucode_raw
);
1493 IWL_ERR(priv
, "failed to allocate pci memory\n");
1495 iwl_dealloc_ucode_pci(priv
);
1498 release_firmware(ucode_raw
);
1505 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
,
1506 struct sk_buff
*skb
);
1509 * iwl_alive_start - called after REPLY_ALIVE notification received
1510 * from protocol/runtime uCode (initialization uCode's
1511 * Alive gets handled by iwl_init_alive_start()).
1513 static void iwl_alive_start(struct iwl_priv
*priv
)
1517 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1519 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1520 /* We had an error bringing up the hardware, so take it
1521 * all the way back down so we can try again */
1522 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
1526 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1527 * This is a paranoid check, because we would not have gotten the
1528 * "runtime" alive if code weren't properly loaded. */
1529 if (iwl_verify_ucode(priv
)) {
1530 /* Runtime instruction load was bad;
1531 * take it all the way back down so we can try again */
1532 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
1536 iwl_clear_stations_table(priv
);
1537 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1540 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
1544 /* After the ALIVE response, we can send host commands to the uCode */
1545 set_bit(STATUS_ALIVE
, &priv
->status
);
1547 if (iwl_is_rfkill(priv
))
1550 ieee80211_wake_queues(priv
->hw
);
1552 priv
->active_rate
= priv
->rates_mask
;
1553 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1555 if (iwl_is_associated(priv
)) {
1556 struct iwl_rxon_cmd
*active_rxon
=
1557 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1558 /* apply any changes in staging */
1559 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1560 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1562 /* Initialize our rx_config data */
1563 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1564 iwl_set_rxon_chain(priv
);
1565 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1568 /* Configure Bluetooth device coexistence support */
1569 iwl_send_bt_config(priv
);
1571 iwl_reset_run_time_calib(priv
);
1573 /* Configure the adapter for unassociated operation */
1574 iwl_commit_rxon(priv
);
1576 /* At this point, the NIC is initialized and operational */
1577 iwl_rf_kill_ct_config(priv
);
1579 iwl_leds_register(priv
);
1581 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
1582 set_bit(STATUS_READY
, &priv
->status
);
1583 wake_up_interruptible(&priv
->wait_command_queue
);
1585 if (priv
->error_recovering
)
1586 iwl_error_recovery(priv
);
1588 iwl_power_update_mode(priv
, 1);
1590 /* reassociate for ADHOC mode */
1591 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1592 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1595 iwl_mac_beacon_update(priv
->hw
, beacon
);
1599 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1600 iwl_set_mode(priv
, priv
->iw_mode
);
1605 queue_work(priv
->workqueue
, &priv
->restart
);
1608 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1610 static void __iwl_down(struct iwl_priv
*priv
)
1612 unsigned long flags
;
1613 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1615 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
1618 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1620 iwl_leds_unregister(priv
);
1622 iwl_clear_stations_table(priv
);
1624 /* Unblock any waiting calls */
1625 wake_up_interruptible_all(&priv
->wait_command_queue
);
1627 /* Wipe out the EXIT_PENDING status bit if we are not actually
1628 * exiting the module */
1630 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1632 /* stop and reset the on-board processor */
1633 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1635 /* tell the device to stop sending interrupts */
1636 spin_lock_irqsave(&priv
->lock
, flags
);
1637 iwl_disable_interrupts(priv
);
1638 spin_unlock_irqrestore(&priv
->lock
, flags
);
1639 iwl_synchronize_irq(priv
);
1641 if (priv
->mac80211_registered
)
1642 ieee80211_stop_queues(priv
->hw
);
1644 /* If we have not previously called iwl_init() then
1645 * clear all bits but the RF Kill and SUSPEND bits and return */
1646 if (!iwl_is_init(priv
)) {
1647 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1649 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1651 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1652 STATUS_GEO_CONFIGURED
|
1653 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1655 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1656 STATUS_EXIT_PENDING
;
1660 /* ...otherwise clear out all the status bits but the RF Kill and
1661 * SUSPEND bits and continue taking the NIC down. */
1662 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1664 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1666 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1667 STATUS_GEO_CONFIGURED
|
1668 test_bit(STATUS_IN_SUSPEND
, &priv
->status
) <<
1670 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1672 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1673 STATUS_EXIT_PENDING
;
1675 spin_lock_irqsave(&priv
->lock
, flags
);
1676 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1677 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1678 spin_unlock_irqrestore(&priv
->lock
, flags
);
1680 iwl_txq_ctx_stop(priv
);
1683 spin_lock_irqsave(&priv
->lock
, flags
);
1684 if (!iwl_grab_nic_access(priv
)) {
1685 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1686 APMG_CLK_VAL_DMA_CLK_RQT
);
1687 iwl_release_nic_access(priv
);
1689 spin_unlock_irqrestore(&priv
->lock
, flags
);
1693 /* FIXME: apm_ops.suspend(priv) */
1694 if (exit_pending
|| test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
1695 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1697 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
1699 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
1701 if (priv
->ibss_beacon
)
1702 dev_kfree_skb(priv
->ibss_beacon
);
1703 priv
->ibss_beacon
= NULL
;
1705 /* clear out any free frames */
1706 iwl_clear_free_frames(priv
);
1709 static void iwl_down(struct iwl_priv
*priv
)
1711 mutex_lock(&priv
->mutex
);
1713 mutex_unlock(&priv
->mutex
);
1715 iwl_cancel_deferred_work(priv
);
1718 #define MAX_HW_RESTARTS 5
1720 static int __iwl_up(struct iwl_priv
*priv
)
1725 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1726 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
1730 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
1731 IWL_ERR(priv
, "ucode not available for device bringup\n");
1735 /* If platform's RF_KILL switch is NOT set to KILL */
1736 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
1737 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1739 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1741 if (iwl_is_rfkill(priv
)) {
1742 iwl_enable_interrupts(priv
);
1743 IWL_WARN(priv
, "Radio disabled by %s RF Kill switch\n",
1744 test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? "HW" : "SW");
1748 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1750 ret
= iwl_hw_nic_init(priv
);
1752 IWL_ERR(priv
, "Unable to init nic\n");
1756 /* make sure rfkill handshake bits are cleared */
1757 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1758 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1759 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1761 /* clear (again), then enable host interrupts */
1762 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1763 iwl_enable_interrupts(priv
);
1765 /* really make sure rfkill handshake bits are cleared */
1766 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1767 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1769 /* Copy original ucode data image from disk into backup cache.
1770 * This will be used to initialize the on-board processor's
1771 * data SRAM for a clean start when the runtime program first loads. */
1772 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
1773 priv
->ucode_data
.len
);
1775 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
1777 iwl_clear_stations_table(priv
);
1779 /* load bootstrap state machine,
1780 * load bootstrap program into processor's memory,
1781 * prepare to load the "initialize" uCode */
1782 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
1785 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
1790 /* Clear out the uCode error bit if it is set */
1791 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
1793 /* start card; "initialize" will load runtime ucode */
1794 iwl_nic_start(priv
);
1796 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
1801 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1803 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1805 /* tried to restart and config the device for as long as our
1806 * patience could withstand */
1807 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
1812 /*****************************************************************************
1814 * Workqueue callbacks
1816 *****************************************************************************/
1818 static void iwl_bg_init_alive_start(struct work_struct
*data
)
1820 struct iwl_priv
*priv
=
1821 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
1823 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1826 mutex_lock(&priv
->mutex
);
1827 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
1828 mutex_unlock(&priv
->mutex
);
1831 static void iwl_bg_alive_start(struct work_struct
*data
)
1833 struct iwl_priv
*priv
=
1834 container_of(data
, struct iwl_priv
, alive_start
.work
);
1836 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1839 mutex_lock(&priv
->mutex
);
1840 iwl_alive_start(priv
);
1841 mutex_unlock(&priv
->mutex
);
1844 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
1846 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1847 run_time_calib_work
);
1849 mutex_lock(&priv
->mutex
);
1851 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1852 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1853 mutex_unlock(&priv
->mutex
);
1857 if (priv
->start_calib
) {
1858 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
1860 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
1863 mutex_unlock(&priv
->mutex
);
1867 static void iwl_bg_up(struct work_struct
*data
)
1869 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
1871 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1874 mutex_lock(&priv
->mutex
);
1876 mutex_unlock(&priv
->mutex
);
1877 iwl_rfkill_set_hw_state(priv
);
1880 static void iwl_bg_restart(struct work_struct
*data
)
1882 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
1884 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1888 queue_work(priv
->workqueue
, &priv
->up
);
1891 static void iwl_bg_rx_replenish(struct work_struct
*data
)
1893 struct iwl_priv
*priv
=
1894 container_of(data
, struct iwl_priv
, rx_replenish
);
1896 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1899 mutex_lock(&priv
->mutex
);
1900 iwl_rx_replenish(priv
);
1901 mutex_unlock(&priv
->mutex
);
1904 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1906 static void iwl_post_associate(struct iwl_priv
*priv
)
1908 struct ieee80211_conf
*conf
= NULL
;
1910 unsigned long flags
;
1912 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
1913 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
1917 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
1918 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
1921 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1925 if (!priv
->vif
|| !priv
->is_open
)
1928 iwl_power_cancel_timeout(priv
);
1929 iwl_scan_cancel_timeout(priv
, 200);
1931 conf
= ieee80211_get_hw_conf(priv
->hw
);
1933 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1934 iwl_commit_rxon(priv
);
1936 iwl_setup_rxon_timing(priv
);
1937 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
1938 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
1940 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
1941 "Attempting to continue.\n");
1943 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1945 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1947 iwl_set_rxon_chain(priv
);
1948 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
1950 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
1951 priv
->assoc_id
, priv
->beacon_int
);
1953 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1954 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1956 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1958 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
1959 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1960 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1962 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1964 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
1965 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1969 iwl_commit_rxon(priv
);
1971 switch (priv
->iw_mode
) {
1972 case NL80211_IFTYPE_STATION
:
1975 case NL80211_IFTYPE_ADHOC
:
1977 /* assume default assoc id */
1980 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
1981 iwl_send_beacon_cmd(priv
);
1986 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
1987 __func__
, priv
->iw_mode
);
1991 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
1992 priv
->assoc_station_added
= 1;
1994 spin_lock_irqsave(&priv
->lock
, flags
);
1995 iwl_activate_qos(priv
, 0);
1996 spin_unlock_irqrestore(&priv
->lock
, flags
);
1998 /* the chain noise calibration will enabled PM upon completion
1999 * If chain noise has already been run, then we need to enable
2000 * power management here */
2001 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2002 iwl_power_enable_management(priv
);
2004 /* Enable Rx differential gain and sensitivity calibrations */
2005 iwl_chain_noise_reset(priv
);
2006 priv
->start_calib
= 1;
2010 /*****************************************************************************
2012 * mac80211 entry point functions
2014 *****************************************************************************/
2016 #define UCODE_READY_TIMEOUT (4 * HZ)
2018 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2020 struct iwl_priv
*priv
= hw
->priv
;
2023 IWL_DEBUG_MAC80211(priv
, "enter\n");
2025 /* we should be verifying the device is ready to be opened */
2026 mutex_lock(&priv
->mutex
);
2028 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
2029 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2030 * ucode filename and max sizes are card-specific. */
2032 if (!priv
->ucode_code
.len
) {
2033 ret
= iwl_read_ucode(priv
);
2035 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
2036 mutex_unlock(&priv
->mutex
);
2041 ret
= __iwl_up(priv
);
2043 mutex_unlock(&priv
->mutex
);
2045 iwl_rfkill_set_hw_state(priv
);
2050 if (iwl_is_rfkill(priv
))
2053 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2055 if (test_bit(STATUS_IN_SUSPEND
, &priv
->status
))
2058 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2059 * mac80211 will not be run successfully. */
2060 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2061 test_bit(STATUS_READY
, &priv
->status
),
2062 UCODE_READY_TIMEOUT
);
2064 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2065 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
2066 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2073 IWL_DEBUG_MAC80211(priv
, "leave\n");
2077 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2079 struct iwl_priv
*priv
= hw
->priv
;
2081 IWL_DEBUG_MAC80211(priv
, "enter\n");
2083 if (!priv
->is_open
) {
2084 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
2090 if (iwl_is_ready_rf(priv
)) {
2091 /* stop mac, cancel any scan request and clear
2092 * RXON_FILTER_ASSOC_MSK BIT
2094 mutex_lock(&priv
->mutex
);
2095 iwl_scan_cancel_timeout(priv
, 100);
2096 mutex_unlock(&priv
->mutex
);
2101 flush_workqueue(priv
->workqueue
);
2103 /* enable interrupts again in order to receive rfkill changes */
2104 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2105 iwl_enable_interrupts(priv
);
2107 IWL_DEBUG_MAC80211(priv
, "leave\n");
2110 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2112 struct iwl_priv
*priv
= hw
->priv
;
2114 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2116 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2117 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2119 if (iwl_tx_skb(priv
, skb
))
2120 dev_kfree_skb_any(skb
);
2122 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2123 return NETDEV_TX_OK
;
2126 static int iwl_mac_add_interface(struct ieee80211_hw
*hw
,
2127 struct ieee80211_if_init_conf
*conf
)
2129 struct iwl_priv
*priv
= hw
->priv
;
2130 unsigned long flags
;
2132 IWL_DEBUG_MAC80211(priv
, "enter: type %d\n", conf
->type
);
2135 IWL_DEBUG_MAC80211(priv
, "leave - vif != NULL\n");
2139 spin_lock_irqsave(&priv
->lock
, flags
);
2140 priv
->vif
= conf
->vif
;
2141 priv
->iw_mode
= conf
->type
;
2143 spin_unlock_irqrestore(&priv
->lock
, flags
);
2145 mutex_lock(&priv
->mutex
);
2147 if (conf
->mac_addr
) {
2148 IWL_DEBUG_MAC80211(priv
, "Set %pM\n", conf
->mac_addr
);
2149 memcpy(priv
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2152 if (iwl_set_mode(priv
, conf
->type
) == -EAGAIN
)
2153 /* we are not ready, will run again when ready */
2154 set_bit(STATUS_MODE_PENDING
, &priv
->status
);
2156 mutex_unlock(&priv
->mutex
);
2158 IWL_DEBUG_MAC80211(priv
, "leave\n");
2163 * iwl_mac_config - mac80211 config callback
2165 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2166 * be set inappropriately and the driver currently sets the hardware up to
2167 * use it whenever needed.
2169 static int iwl_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
2171 struct iwl_priv
*priv
= hw
->priv
;
2172 const struct iwl_channel_info
*ch_info
;
2173 struct ieee80211_conf
*conf
= &hw
->conf
;
2174 unsigned long flags
= 0;
2177 int scan_active
= 0;
2179 mutex_lock(&priv
->mutex
);
2180 IWL_DEBUG_MAC80211(priv
, "enter to channel %d changed 0x%X\n",
2181 conf
->channel
->hw_value
, changed
);
2183 if (unlikely(!priv
->cfg
->mod_params
->disable_hw_scan
&&
2184 test_bit(STATUS_SCANNING
, &priv
->status
))) {
2186 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
2190 /* during scanning mac80211 will delay channel setting until
2191 * scan finish with changed = 0
2193 if (!changed
|| (changed
& IEEE80211_CONF_CHANGE_CHANNEL
)) {
2197 ch
= ieee80211_frequency_to_channel(conf
->channel
->center_freq
);
2198 ch_info
= iwl_get_channel_info(priv
, conf
->channel
->band
, ch
);
2199 if (!is_channel_valid(ch_info
)) {
2200 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
2205 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2206 !is_channel_ibss(ch_info
)) {
2207 IWL_ERR(priv
, "channel %d in band %d not "
2209 conf
->channel
->hw_value
, conf
->channel
->band
);
2214 priv
->current_ht_config
.is_ht
= conf_is_ht(conf
);
2216 spin_lock_irqsave(&priv
->lock
, flags
);
2219 /* if we are switching from ht to 2.4 clear flags
2220 * from any ht related info since 2.4 does not
2222 if ((le16_to_cpu(priv
->staging_rxon
.channel
) != ch
))
2223 priv
->staging_rxon
.flags
= 0;
2225 iwl_set_rxon_channel(priv
, conf
->channel
);
2227 iwl_set_flags_for_band(priv
, conf
->channel
->band
);
2228 spin_unlock_irqrestore(&priv
->lock
, flags
);
2230 /* The list of supported rates and rate mask can be different
2231 * for each band; since the band may have changed, reset
2232 * the rate mask to what mac80211 lists */
2236 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
2237 if (conf
->flags
& IEEE80211_CONF_PS
)
2238 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_INDEX_3
);
2240 ret
= iwl_power_set_user_mode(priv
, IWL_POWER_MODE_CAM
);
2242 IWL_DEBUG_MAC80211(priv
, "Error setting power level\n");
2246 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
2247 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
2248 priv
->tx_power_user_lmt
, conf
->power_level
);
2250 iwl_set_tx_power(priv
, conf
->power_level
, false);
2253 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2254 iwl_set_rxon_chain(priv
);
2256 if (changed
& IEEE80211_CONF_CHANGE_RADIO_ENABLED
) {
2257 if (conf
->radio_enabled
&&
2258 iwl_radio_kill_sw_enable_radio(priv
)) {
2259 IWL_DEBUG_MAC80211(priv
, "leave - RF-KILL - "
2260 "waiting for uCode\n");
2264 if (!conf
->radio_enabled
)
2265 iwl_radio_kill_sw_disable_radio(priv
);
2268 if (!conf
->radio_enabled
) {
2269 IWL_DEBUG_MAC80211(priv
, "leave - radio disabled\n");
2273 if (!iwl_is_ready(priv
)) {
2274 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2281 if (memcmp(&priv
->active_rxon
,
2282 &priv
->staging_rxon
, sizeof(priv
->staging_rxon
)))
2283 iwl_commit_rxon(priv
);
2285 IWL_DEBUG_INFO(priv
, "No re-sending same RXON configuration.\n");
2289 IWL_DEBUG_MAC80211(priv
, "leave\n");
2290 mutex_unlock(&priv
->mutex
);
2294 static void iwl_config_ap(struct iwl_priv
*priv
)
2297 unsigned long flags
;
2299 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2302 /* The following should be done only at AP bring up */
2303 if (!iwl_is_associated(priv
)) {
2305 /* RXON - unassoc (to set timing command) */
2306 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2307 iwl_commit_rxon(priv
);
2310 iwl_setup_rxon_timing(priv
);
2311 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2312 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2314 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2315 "Attempting to continue.\n");
2317 iwl_set_rxon_chain(priv
);
2319 /* FIXME: what should be the assoc_id for AP? */
2320 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2321 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2322 priv
->staging_rxon
.flags
|=
2323 RXON_FLG_SHORT_PREAMBLE_MSK
;
2325 priv
->staging_rxon
.flags
&=
2326 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2328 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2329 if (priv
->assoc_capability
&
2330 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2331 priv
->staging_rxon
.flags
|=
2332 RXON_FLG_SHORT_SLOT_MSK
;
2334 priv
->staging_rxon
.flags
&=
2335 ~RXON_FLG_SHORT_SLOT_MSK
;
2337 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2338 priv
->staging_rxon
.flags
&=
2339 ~RXON_FLG_SHORT_SLOT_MSK
;
2341 /* restore RXON assoc */
2342 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2343 iwl_commit_rxon(priv
);
2344 spin_lock_irqsave(&priv
->lock
, flags
);
2345 iwl_activate_qos(priv
, 1);
2346 spin_unlock_irqrestore(&priv
->lock
, flags
);
2347 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2349 iwl_send_beacon_cmd(priv
);
2351 /* FIXME - we need to add code here to detect a totally new
2352 * configuration, reset the AP, unassoc, rxon timing, assoc,
2353 * clear sta table, add BCAST sta... */
2357 static int iwl_mac_config_interface(struct ieee80211_hw
*hw
,
2358 struct ieee80211_vif
*vif
,
2359 struct ieee80211_if_conf
*conf
)
2361 struct iwl_priv
*priv
= hw
->priv
;
2367 if (priv
->vif
!= vif
) {
2368 IWL_DEBUG_MAC80211(priv
, "leave - priv->vif != vif\n");
2372 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
&&
2373 conf
->changed
& IEEE80211_IFCC_BEACON
) {
2374 struct sk_buff
*beacon
= ieee80211_beacon_get(hw
, vif
);
2377 mutex_lock(&priv
->mutex
);
2378 rc
= iwl_mac_beacon_update(hw
, beacon
);
2379 mutex_unlock(&priv
->mutex
);
2384 if (!iwl_is_alive(priv
))
2387 mutex_lock(&priv
->mutex
);
2390 IWL_DEBUG_MAC80211(priv
, "bssid: %pM\n", conf
->bssid
);
2393 * very dubious code was here; the probe filtering flag is never set:
2395 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2396 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2399 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
2401 conf
->bssid
= priv
->mac_addr
;
2402 memcpy(priv
->bssid
, priv
->mac_addr
, ETH_ALEN
);
2403 IWL_DEBUG_MAC80211(priv
, "bssid was set to: %pM\n",
2406 if (priv
->ibss_beacon
)
2407 dev_kfree_skb(priv
->ibss_beacon
);
2409 priv
->ibss_beacon
= ieee80211_beacon_get(hw
, vif
);
2412 if (iwl_is_rfkill(priv
))
2415 if (conf
->bssid
&& !is_zero_ether_addr(conf
->bssid
) &&
2416 !is_multicast_ether_addr(conf
->bssid
)) {
2417 /* If there is currently a HW scan going on in the background
2418 * then we need to cancel it else the RXON below will fail. */
2419 if (iwl_scan_cancel_timeout(priv
, 100)) {
2420 IWL_WARN(priv
, "Aborted scan still in progress "
2422 IWL_DEBUG_MAC80211(priv
, "leaving - scan abort failed.\n");
2423 mutex_unlock(&priv
->mutex
);
2426 memcpy(priv
->staging_rxon
.bssid_addr
, conf
->bssid
, ETH_ALEN
);
2428 /* TODO: Audit driver for usage of these members and see
2429 * if mac80211 deprecates them (priv->bssid looks like it
2430 * shouldn't be there, but I haven't scanned the IBSS code
2431 * to verify) - jpk */
2432 memcpy(priv
->bssid
, conf
->bssid
, ETH_ALEN
);
2434 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2435 iwl_config_ap(priv
);
2437 rc
= iwl_commit_rxon(priv
);
2438 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
) && rc
)
2439 iwl_rxon_add_station(
2440 priv
, priv
->active_rxon
.bssid_addr
, 1);
2444 iwl_scan_cancel_timeout(priv
, 100);
2445 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2446 iwl_commit_rxon(priv
);
2450 IWL_DEBUG_MAC80211(priv
, "leave\n");
2451 mutex_unlock(&priv
->mutex
);
2456 static void iwl_mac_remove_interface(struct ieee80211_hw
*hw
,
2457 struct ieee80211_if_init_conf
*conf
)
2459 struct iwl_priv
*priv
= hw
->priv
;
2461 IWL_DEBUG_MAC80211(priv
, "enter\n");
2463 mutex_lock(&priv
->mutex
);
2465 if (iwl_is_ready_rf(priv
)) {
2466 iwl_scan_cancel_timeout(priv
, 100);
2467 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2468 iwl_commit_rxon(priv
);
2470 if (priv
->vif
== conf
->vif
) {
2472 memset(priv
->bssid
, 0, ETH_ALEN
);
2474 mutex_unlock(&priv
->mutex
);
2476 IWL_DEBUG_MAC80211(priv
, "leave\n");
2480 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2481 static void iwl_bss_info_changed(struct ieee80211_hw
*hw
,
2482 struct ieee80211_vif
*vif
,
2483 struct ieee80211_bss_conf
*bss_conf
,
2486 struct iwl_priv
*priv
= hw
->priv
;
2488 IWL_DEBUG_MAC80211(priv
, "changes = 0x%X\n", changes
);
2490 if (changes
& BSS_CHANGED_ERP_PREAMBLE
) {
2491 IWL_DEBUG_MAC80211(priv
, "ERP_PREAMBLE %d\n",
2492 bss_conf
->use_short_preamble
);
2493 if (bss_conf
->use_short_preamble
)
2494 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2496 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2499 if (changes
& BSS_CHANGED_ERP_CTS_PROT
) {
2500 IWL_DEBUG_MAC80211(priv
, "ERP_CTS %d\n", bss_conf
->use_cts_prot
);
2501 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
2502 priv
->staging_rxon
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
2504 priv
->staging_rxon
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
2507 if (changes
& BSS_CHANGED_HT
) {
2508 iwl_ht_conf(priv
, bss_conf
);
2509 iwl_set_rxon_chain(priv
);
2512 if (changes
& BSS_CHANGED_ASSOC
) {
2513 IWL_DEBUG_MAC80211(priv
, "ASSOC %d\n", bss_conf
->assoc
);
2514 /* This should never happen as this function should
2515 * never be called from interrupt context. */
2516 if (WARN_ON_ONCE(in_interrupt()))
2518 if (bss_conf
->assoc
) {
2519 priv
->assoc_id
= bss_conf
->aid
;
2520 priv
->beacon_int
= bss_conf
->beacon_int
;
2521 priv
->power_data
.dtim_period
= bss_conf
->dtim_period
;
2522 priv
->timestamp
= bss_conf
->timestamp
;
2523 priv
->assoc_capability
= bss_conf
->assoc_capability
;
2525 /* we have just associated, don't start scan too early
2526 * leave time for EAPOL exchange to complete
2528 priv
->next_scan_jiffies
= jiffies
+
2529 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC
;
2530 mutex_lock(&priv
->mutex
);
2531 iwl_post_associate(priv
);
2532 mutex_unlock(&priv
->mutex
);
2535 IWL_DEBUG_MAC80211(priv
, "DISASSOC %d\n", bss_conf
->assoc
);
2537 } else if (changes
&& iwl_is_associated(priv
) && priv
->assoc_id
) {
2538 IWL_DEBUG_MAC80211(priv
, "Associated Changes %d\n", changes
);
2539 iwl_send_rxon_assoc(priv
);
2544 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
2545 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
2546 u32 iv32
, u16
*phase1key
)
2549 struct iwl_priv
*priv
= hw
->priv
;
2550 IWL_DEBUG_MAC80211(priv
, "enter\n");
2552 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
2554 IWL_DEBUG_MAC80211(priv
, "leave\n");
2557 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2558 struct ieee80211_vif
*vif
,
2559 struct ieee80211_sta
*sta
,
2560 struct ieee80211_key_conf
*key
)
2562 struct iwl_priv
*priv
= hw
->priv
;
2566 bool is_default_wep_key
= false;
2568 IWL_DEBUG_MAC80211(priv
, "enter\n");
2570 if (priv
->hw_params
.sw_crypto
) {
2571 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
2574 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
2575 sta_id
= iwl_find_station(priv
, addr
);
2576 if (sta_id
== IWL_INVALID_STATION
) {
2577 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
2583 mutex_lock(&priv
->mutex
);
2584 iwl_scan_cancel_timeout(priv
, 100);
2585 mutex_unlock(&priv
->mutex
);
2587 /* If we are getting WEP group key and we didn't receive any key mapping
2588 * so far, we are in legacy wep mode (group key only), otherwise we are
2590 * In legacy wep mode, we use another host command to the uCode */
2591 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
2592 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2594 is_default_wep_key
= !priv
->key_mapping_key
;
2596 is_default_wep_key
=
2597 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
2602 if (is_default_wep_key
)
2603 ret
= iwl_set_default_wep_key(priv
, key
);
2605 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
2607 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
2610 if (is_default_wep_key
)
2611 ret
= iwl_remove_default_wep_key(priv
, key
);
2613 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
2615 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
2621 IWL_DEBUG_MAC80211(priv
, "leave\n");
2626 static int iwl_mac_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
2627 const struct ieee80211_tx_queue_params
*params
)
2629 struct iwl_priv
*priv
= hw
->priv
;
2630 unsigned long flags
;
2633 IWL_DEBUG_MAC80211(priv
, "enter\n");
2635 if (!iwl_is_ready_rf(priv
)) {
2636 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2640 if (queue
>= AC_NUM
) {
2641 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
2645 q
= AC_NUM
- 1 - queue
;
2647 spin_lock_irqsave(&priv
->lock
, flags
);
2649 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_min
= cpu_to_le16(params
->cw_min
);
2650 priv
->qos_data
.def_qos_parm
.ac
[q
].cw_max
= cpu_to_le16(params
->cw_max
);
2651 priv
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
2652 priv
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
2653 cpu_to_le16((params
->txop
* 32));
2655 priv
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
2656 priv
->qos_data
.qos_active
= 1;
2658 if (priv
->iw_mode
== NL80211_IFTYPE_AP
)
2659 iwl_activate_qos(priv
, 1);
2660 else if (priv
->assoc_id
&& iwl_is_associated(priv
))
2661 iwl_activate_qos(priv
, 0);
2663 spin_unlock_irqrestore(&priv
->lock
, flags
);
2665 IWL_DEBUG_MAC80211(priv
, "leave\n");
2669 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
2670 enum ieee80211_ampdu_mlme_action action
,
2671 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
2673 struct iwl_priv
*priv
= hw
->priv
;
2676 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
2679 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
2683 case IEEE80211_AMPDU_RX_START
:
2684 IWL_DEBUG_HT(priv
, "start Rx\n");
2685 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
2686 case IEEE80211_AMPDU_RX_STOP
:
2687 IWL_DEBUG_HT(priv
, "stop Rx\n");
2688 ret
= iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
2689 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2693 case IEEE80211_AMPDU_TX_START
:
2694 IWL_DEBUG_HT(priv
, "start Tx\n");
2695 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
2696 case IEEE80211_AMPDU_TX_STOP
:
2697 IWL_DEBUG_HT(priv
, "stop Tx\n");
2698 ret
= iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
2699 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2704 IWL_DEBUG_HT(priv
, "unknown\n");
2711 static int iwl_mac_get_tx_stats(struct ieee80211_hw
*hw
,
2712 struct ieee80211_tx_queue_stats
*stats
)
2714 struct iwl_priv
*priv
= hw
->priv
;
2716 struct iwl_tx_queue
*txq
;
2717 struct iwl_queue
*q
;
2718 unsigned long flags
;
2720 IWL_DEBUG_MAC80211(priv
, "enter\n");
2722 if (!iwl_is_ready_rf(priv
)) {
2723 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2727 spin_lock_irqsave(&priv
->lock
, flags
);
2729 for (i
= 0; i
< AC_NUM
; i
++) {
2730 txq
= &priv
->txq
[i
];
2732 avail
= iwl_queue_space(q
);
2734 stats
[i
].len
= q
->n_window
- avail
;
2735 stats
[i
].limit
= q
->n_window
- q
->high_mark
;
2736 stats
[i
].count
= q
->n_window
;
2739 spin_unlock_irqrestore(&priv
->lock
, flags
);
2741 IWL_DEBUG_MAC80211(priv
, "leave\n");
2746 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
2747 struct ieee80211_low_level_stats
*stats
)
2749 struct iwl_priv
*priv
= hw
->priv
;
2752 IWL_DEBUG_MAC80211(priv
, "enter\n");
2753 IWL_DEBUG_MAC80211(priv
, "leave\n");
2758 static void iwl_mac_reset_tsf(struct ieee80211_hw
*hw
)
2760 struct iwl_priv
*priv
= hw
->priv
;
2761 unsigned long flags
;
2763 mutex_lock(&priv
->mutex
);
2764 IWL_DEBUG_MAC80211(priv
, "enter\n");
2766 spin_lock_irqsave(&priv
->lock
, flags
);
2767 memset(&priv
->current_ht_config
, 0, sizeof(struct iwl_ht_info
));
2768 spin_unlock_irqrestore(&priv
->lock
, flags
);
2770 iwl_reset_qos(priv
);
2772 spin_lock_irqsave(&priv
->lock
, flags
);
2774 priv
->assoc_capability
= 0;
2775 priv
->assoc_station_added
= 0;
2777 /* new association get rid of ibss beacon skb */
2778 if (priv
->ibss_beacon
)
2779 dev_kfree_skb(priv
->ibss_beacon
);
2781 priv
->ibss_beacon
= NULL
;
2783 priv
->beacon_int
= priv
->hw
->conf
.beacon_int
;
2784 priv
->timestamp
= 0;
2785 if ((priv
->iw_mode
== NL80211_IFTYPE_STATION
))
2786 priv
->beacon_int
= 0;
2788 spin_unlock_irqrestore(&priv
->lock
, flags
);
2790 if (!iwl_is_ready_rf(priv
)) {
2791 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
2792 mutex_unlock(&priv
->mutex
);
2796 /* we are restarting association process
2797 * clear RXON_FILTER_ASSOC_MSK bit
2799 if (priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2800 iwl_scan_cancel_timeout(priv
, 100);
2801 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2802 iwl_commit_rxon(priv
);
2805 iwl_power_update_mode(priv
, 0);
2807 /* Per mac80211.h: This is only used in IBSS mode... */
2808 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2810 /* switch to CAM during association period.
2811 * the ucode will block any association/authentication
2812 * frome during assiciation period if it can not hear
2813 * the AP because of PM. the timer enable PM back is
2814 * association do not complete
2816 if (priv
->hw
->conf
.channel
->flags
& (IEEE80211_CHAN_PASSIVE_SCAN
|
2817 IEEE80211_CHAN_RADAR
))
2818 iwl_power_disable_management(priv
, 3000);
2820 IWL_DEBUG_MAC80211(priv
, "leave - not in IBSS\n");
2821 mutex_unlock(&priv
->mutex
);
2827 mutex_unlock(&priv
->mutex
);
2829 IWL_DEBUG_MAC80211(priv
, "leave\n");
2832 static int iwl_mac_beacon_update(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2834 struct iwl_priv
*priv
= hw
->priv
;
2835 unsigned long flags
;
2838 IWL_DEBUG_MAC80211(priv
, "enter\n");
2840 if (!iwl_is_ready_rf(priv
)) {
2841 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
2845 if (priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) {
2846 IWL_DEBUG_MAC80211(priv
, "leave - not IBSS\n");
2850 spin_lock_irqsave(&priv
->lock
, flags
);
2852 if (priv
->ibss_beacon
)
2853 dev_kfree_skb(priv
->ibss_beacon
);
2855 priv
->ibss_beacon
= skb
;
2858 timestamp
= ((struct ieee80211_mgmt
*)skb
->data
)->u
.beacon
.timestamp
;
2859 priv
->timestamp
= le64_to_cpu(timestamp
);
2861 IWL_DEBUG_MAC80211(priv
, "leave\n");
2862 spin_unlock_irqrestore(&priv
->lock
, flags
);
2864 iwl_reset_qos(priv
);
2866 iwl_post_associate(priv
);
2872 /*****************************************************************************
2876 *****************************************************************************/
2878 #ifdef CONFIG_IWLWIFI_DEBUG
2881 * The following adds a new attribute to the sysfs representation
2882 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2883 * used for controlling the debug level.
2885 * See the level definitions in iwl for details.
2888 static ssize_t
show_debug_level(struct device
*d
,
2889 struct device_attribute
*attr
, char *buf
)
2891 struct iwl_priv
*priv
= d
->driver_data
;
2893 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
2895 static ssize_t
store_debug_level(struct device
*d
,
2896 struct device_attribute
*attr
,
2897 const char *buf
, size_t count
)
2899 struct iwl_priv
*priv
= d
->driver_data
;
2903 ret
= strict_strtoul(buf
, 0, &val
);
2905 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
2907 priv
->debug_level
= val
;
2909 return strnlen(buf
, count
);
2912 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
2913 show_debug_level
, store_debug_level
);
2916 #endif /* CONFIG_IWLWIFI_DEBUG */
2919 static ssize_t
show_version(struct device
*d
,
2920 struct device_attribute
*attr
, char *buf
)
2922 struct iwl_priv
*priv
= d
->driver_data
;
2923 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
2927 if (palive
->is_valid
)
2928 pos
+= sprintf(buf
+ pos
,
2929 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2930 "fw type: 0x%01X 0x%01X\n",
2931 palive
->ucode_major
, palive
->ucode_minor
,
2932 palive
->sw_rev
[0], palive
->sw_rev
[1],
2933 palive
->ver_type
, palive
->ver_subtype
);
2935 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
2938 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
2939 pos
+= sprintf(buf
+ pos
, "EEPROM version: 0x%x\n",
2942 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
2948 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
2950 static ssize_t
show_temperature(struct device
*d
,
2951 struct device_attribute
*attr
, char *buf
)
2953 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2955 if (!iwl_is_alive(priv
))
2958 return sprintf(buf
, "%d\n", priv
->temperature
);
2961 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
2963 static ssize_t
show_tx_power(struct device
*d
,
2964 struct device_attribute
*attr
, char *buf
)
2966 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2968 if (!iwl_is_ready_rf(priv
))
2969 return sprintf(buf
, "off\n");
2971 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
2974 static ssize_t
store_tx_power(struct device
*d
,
2975 struct device_attribute
*attr
,
2976 const char *buf
, size_t count
)
2978 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2982 ret
= strict_strtoul(buf
, 10, &val
);
2984 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
2986 iwl_set_tx_power(priv
, val
, false);
2991 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
2993 static ssize_t
show_flags(struct device
*d
,
2994 struct device_attribute
*attr
, char *buf
)
2996 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2998 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
3001 static ssize_t
store_flags(struct device
*d
,
3002 struct device_attribute
*attr
,
3003 const char *buf
, size_t count
)
3005 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3008 int ret
= strict_strtoul(buf
, 0, &val
);
3013 mutex_lock(&priv
->mutex
);
3014 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
3015 /* Cancel any currently running scans... */
3016 if (iwl_scan_cancel_timeout(priv
, 100))
3017 IWL_WARN(priv
, "Could not cancel scan.\n");
3019 IWL_DEBUG_INFO(priv
, "Commit rxon.flags = 0x%04X\n", flags
);
3020 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
3021 iwl_commit_rxon(priv
);
3024 mutex_unlock(&priv
->mutex
);
3029 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
3031 static ssize_t
show_filter_flags(struct device
*d
,
3032 struct device_attribute
*attr
, char *buf
)
3034 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3036 return sprintf(buf
, "0x%04X\n",
3037 le32_to_cpu(priv
->active_rxon
.filter_flags
));
3040 static ssize_t
store_filter_flags(struct device
*d
,
3041 struct device_attribute
*attr
,
3042 const char *buf
, size_t count
)
3044 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
3047 int ret
= strict_strtoul(buf
, 0, &val
);
3050 filter_flags
= (u32
)val
;
3052 mutex_lock(&priv
->mutex
);
3053 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
3054 /* Cancel any currently running scans... */
3055 if (iwl_scan_cancel_timeout(priv
, 100))
3056 IWL_WARN(priv
, "Could not cancel scan.\n");
3058 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
3059 "0x%04X\n", filter_flags
);
3060 priv
->staging_rxon
.filter_flags
=
3061 cpu_to_le32(filter_flags
);
3062 iwl_commit_rxon(priv
);
3065 mutex_unlock(&priv
->mutex
);
3070 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
3071 store_filter_flags
);
3073 static ssize_t
store_power_level(struct device
*d
,
3074 struct device_attribute
*attr
,
3075 const char *buf
, size_t count
)
3077 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3082 mutex_lock(&priv
->mutex
);
3084 ret
= strict_strtoul(buf
, 10, &mode
);
3088 ret
= iwl_power_set_user_mode(priv
, mode
);
3090 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
3096 mutex_unlock(&priv
->mutex
);
3100 static ssize_t
show_power_level(struct device
*d
,
3101 struct device_attribute
*attr
, char *buf
)
3103 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3104 int mode
= priv
->power_data
.user_power_setting
;
3105 int system
= priv
->power_data
.system_power_setting
;
3106 int level
= priv
->power_data
.power_mode
;
3110 case IWL_POWER_SYS_AUTO
:
3111 p
+= sprintf(p
, "SYSTEM:auto");
3113 case IWL_POWER_SYS_AC
:
3114 p
+= sprintf(p
, "SYSTEM:ac");
3116 case IWL_POWER_SYS_BATTERY
:
3117 p
+= sprintf(p
, "SYSTEM:battery");
3121 p
+= sprintf(p
, "\tMODE:%s", (mode
< IWL_POWER_AUTO
) ?
3123 p
+= sprintf(p
, "\tINDEX:%d", level
);
3124 p
+= sprintf(p
, "\n");
3128 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
3132 static ssize_t
show_statistics(struct device
*d
,
3133 struct device_attribute
*attr
, char *buf
)
3135 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3136 u32 size
= sizeof(struct iwl_notif_statistics
);
3137 u32 len
= 0, ofs
= 0;
3138 u8
*data
= (u8
*)&priv
->statistics
;
3141 if (!iwl_is_alive(priv
))
3144 mutex_lock(&priv
->mutex
);
3145 rc
= iwl_send_statistics_request(priv
, 0);
3146 mutex_unlock(&priv
->mutex
);
3150 "Error sending statistics request: 0x%08X\n", rc
);
3154 while (size
&& (PAGE_SIZE
- len
)) {
3155 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
3156 PAGE_SIZE
- len
, 1);
3158 if (PAGE_SIZE
- len
)
3162 size
-= min(size
, 16U);
3168 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
3171 /*****************************************************************************
3173 * driver setup and teardown
3175 *****************************************************************************/
3177 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3179 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3181 init_waitqueue_head(&priv
->wait_command_queue
);
3183 INIT_WORK(&priv
->up
, iwl_bg_up
);
3184 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3185 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3186 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
3187 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3188 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3189 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3190 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3192 iwl_setup_scan_deferred_work(priv
);
3193 iwl_setup_power_deferred_work(priv
);
3195 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3196 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3198 init_timer(&priv
->statistics_periodic
);
3199 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3200 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3202 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3203 iwl_irq_tasklet
, (unsigned long)priv
);
3206 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3208 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3209 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3211 cancel_delayed_work_sync(&priv
->init_alive_start
);
3212 cancel_delayed_work(&priv
->scan_check
);
3213 cancel_delayed_work_sync(&priv
->set_power_save
);
3214 cancel_delayed_work(&priv
->alive_start
);
3215 cancel_work_sync(&priv
->beacon_update
);
3216 del_timer_sync(&priv
->statistics_periodic
);
3219 static struct attribute
*iwl_sysfs_entries
[] = {
3220 &dev_attr_flags
.attr
,
3221 &dev_attr_filter_flags
.attr
,
3222 &dev_attr_power_level
.attr
,
3223 &dev_attr_statistics
.attr
,
3224 &dev_attr_temperature
.attr
,
3225 &dev_attr_tx_power
.attr
,
3226 #ifdef CONFIG_IWLWIFI_DEBUG
3227 &dev_attr_debug_level
.attr
,
3229 &dev_attr_version
.attr
,
3234 static struct attribute_group iwl_attribute_group
= {
3235 .name
= NULL
, /* put in device directory */
3236 .attrs
= iwl_sysfs_entries
,
3239 static struct ieee80211_ops iwl_hw_ops
= {
3241 .start
= iwl_mac_start
,
3242 .stop
= iwl_mac_stop
,
3243 .add_interface
= iwl_mac_add_interface
,
3244 .remove_interface
= iwl_mac_remove_interface
,
3245 .config
= iwl_mac_config
,
3246 .config_interface
= iwl_mac_config_interface
,
3247 .configure_filter
= iwl_configure_filter
,
3248 .set_key
= iwl_mac_set_key
,
3249 .update_tkip_key
= iwl_mac_update_tkip_key
,
3250 .get_stats
= iwl_mac_get_stats
,
3251 .get_tx_stats
= iwl_mac_get_tx_stats
,
3252 .conf_tx
= iwl_mac_conf_tx
,
3253 .reset_tsf
= iwl_mac_reset_tsf
,
3254 .bss_info_changed
= iwl_bss_info_changed
,
3255 .ampdu_action
= iwl_mac_ampdu_action
,
3256 .hw_scan
= iwl_mac_hw_scan
3259 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3262 struct iwl_priv
*priv
;
3263 struct ieee80211_hw
*hw
;
3264 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3265 unsigned long flags
;
3268 /************************
3269 * 1. Allocating HW data
3270 ************************/
3272 /* Disabling hardware scan means that mac80211 will perform scans
3273 * "the hard way", rather than using device's scan. */
3274 if (cfg
->mod_params
->disable_hw_scan
) {
3275 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
3276 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3277 "Disabling hw_scan\n");
3278 iwl_hw_ops
.hw_scan
= NULL
;
3281 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3287 /* At this point both hw and priv are allocated. */
3289 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3291 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3293 priv
->pci_dev
= pdev
;
3295 #ifdef CONFIG_IWLWIFI_DEBUG
3296 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
3297 atomic_set(&priv
->restrict_refcnt
, 0);
3300 /**************************
3301 * 2. Initializing PCI bus
3302 **************************/
3303 if (pci_enable_device(pdev
)) {
3305 goto out_ieee80211_free_hw
;
3308 pci_set_master(pdev
);
3310 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3312 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3314 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3316 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3317 /* both attempts failed: */
3319 IWL_WARN(priv
, "No suitable DMA available.\n");
3320 goto out_pci_disable_device
;
3324 err
= pci_request_regions(pdev
, DRV_NAME
);
3326 goto out_pci_disable_device
;
3328 pci_set_drvdata(pdev
, priv
);
3331 /***********************
3332 * 3. Read REV register
3333 ***********************/
3334 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3335 if (!priv
->hw_base
) {
3337 goto out_pci_release_regions
;
3340 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3341 (unsigned long long) pci_resource_len(pdev
, 0));
3342 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3344 iwl_hw_detect(priv
);
3345 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3346 priv
->cfg
->name
, priv
->hw_rev
);
3348 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3349 * PCI Tx retries from interfering with C3 CPU state */
3350 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3353 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
3355 IWL_ERR(priv
, "Failed to init APMG\n");
3361 /* Read the EEPROM */
3362 err
= iwl_eeprom_init(priv
);
3364 IWL_ERR(priv
, "Unable to init EEPROM\n");
3367 err
= iwl_eeprom_check_version(priv
);
3369 goto out_free_eeprom
;
3371 /* extract MAC Address */
3372 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
3373 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
3374 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
3376 /************************
3377 * 5. Setup HW constants
3378 ************************/
3379 if (iwl_set_hw_params(priv
)) {
3380 IWL_ERR(priv
, "failed to set hw parameters\n");
3381 goto out_free_eeprom
;
3384 /*******************
3386 *******************/
3388 err
= iwl_init_drv(priv
);
3390 goto out_free_eeprom
;
3391 /* At this point both hw and priv are initialized. */
3393 /**********************************
3394 * 7. Initialize module parameters
3395 **********************************/
3397 /* Disable radio (SW RF KILL) via parameter when loading driver */
3398 if (priv
->cfg
->mod_params
->disable
) {
3399 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
3400 IWL_DEBUG_INFO(priv
, "Radio disabled.\n");
3403 /********************
3405 ********************/
3406 spin_lock_irqsave(&priv
->lock
, flags
);
3407 iwl_disable_interrupts(priv
);
3408 spin_unlock_irqrestore(&priv
->lock
, flags
);
3410 pci_enable_msi(priv
->pci_dev
);
3412 err
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
3415 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
3416 goto out_disable_msi
;
3418 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3420 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3424 iwl_setup_deferred_work(priv
);
3425 iwl_setup_rx_handlers(priv
);
3427 /**********************************
3428 * 9. Setup and register mac80211
3429 **********************************/
3431 /* enable interrupts if needed: hw bug w/a */
3432 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3433 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3434 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3435 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3438 iwl_enable_interrupts(priv
);
3440 err
= iwl_setup_mac(priv
);
3442 goto out_remove_sysfs
;
3444 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
3446 IWL_ERR(priv
, "failed to create debugfs files\n");
3448 /* If platform's RF_KILL switch is NOT set to KILL */
3449 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3450 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3452 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3454 err
= iwl_rfkill_init(priv
);
3456 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
3457 "Ignoring error: %d\n", err
);
3459 iwl_rfkill_set_hw_state(priv
);
3461 iwl_power_initialize(priv
);
3465 destroy_workqueue(priv
->workqueue
);
3466 priv
->workqueue
= NULL
;
3467 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3469 free_irq(priv
->pci_dev
->irq
, priv
);
3471 pci_disable_msi(priv
->pci_dev
);
3472 iwl_uninit_drv(priv
);
3474 iwl_eeprom_free(priv
);
3476 pci_iounmap(pdev
, priv
->hw_base
);
3477 out_pci_release_regions
:
3478 pci_set_drvdata(pdev
, NULL
);
3479 pci_release_regions(pdev
);
3480 out_pci_disable_device
:
3481 pci_disable_device(pdev
);
3482 out_ieee80211_free_hw
:
3483 ieee80211_free_hw(priv
->hw
);
3488 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3490 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3491 unsigned long flags
;
3496 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3498 iwl_dbgfs_unregister(priv
);
3499 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3501 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3502 * to be called and iwl_down since we are removing the device
3503 * we need to set STATUS_EXIT_PENDING bit.
3505 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3506 if (priv
->mac80211_registered
) {
3507 ieee80211_unregister_hw(priv
->hw
);
3508 priv
->mac80211_registered
= 0;
3513 /* make sure we flush any pending irq or
3514 * tasklet for the driver
3516 spin_lock_irqsave(&priv
->lock
, flags
);
3517 iwl_disable_interrupts(priv
);
3518 spin_unlock_irqrestore(&priv
->lock
, flags
);
3520 iwl_synchronize_irq(priv
);
3522 iwl_rfkill_unregister(priv
);
3523 iwl_dealloc_ucode_pci(priv
);
3526 iwl_rx_queue_free(priv
, &priv
->rxq
);
3527 iwl_hw_txq_ctx_free(priv
);
3529 iwl_clear_stations_table(priv
);
3530 iwl_eeprom_free(priv
);
3533 /*netif_stop_queue(dev); */
3534 flush_workqueue(priv
->workqueue
);
3536 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3537 * priv->workqueue... so we can't take down the workqueue
3539 destroy_workqueue(priv
->workqueue
);
3540 priv
->workqueue
= NULL
;
3542 free_irq(priv
->pci_dev
->irq
, priv
);
3543 pci_disable_msi(priv
->pci_dev
);
3544 pci_iounmap(pdev
, priv
->hw_base
);
3545 pci_release_regions(pdev
);
3546 pci_disable_device(pdev
);
3547 pci_set_drvdata(pdev
, NULL
);
3549 iwl_uninit_drv(priv
);
3551 if (priv
->ibss_beacon
)
3552 dev_kfree_skb(priv
->ibss_beacon
);
3554 ieee80211_free_hw(priv
->hw
);
3559 static int iwl_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3561 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3563 if (priv
->is_open
) {
3564 set_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3565 iwl_mac_stop(priv
->hw
);
3569 pci_save_state(pdev
);
3570 pci_disable_device(pdev
);
3571 pci_set_power_state(pdev
, PCI_D3hot
);
3576 static int iwl_pci_resume(struct pci_dev
*pdev
)
3578 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3581 pci_set_power_state(pdev
, PCI_D0
);
3582 ret
= pci_enable_device(pdev
);
3585 pci_restore_state(pdev
);
3586 iwl_enable_interrupts(priv
);
3589 iwl_mac_start(priv
->hw
);
3591 clear_bit(STATUS_IN_SUSPEND
, &priv
->status
);
3595 #endif /* CONFIG_PM */
3597 /*****************************************************************************
3599 * driver and module entry point
3601 *****************************************************************************/
3603 /* Hardware specific file defines the PCI IDs table for that hardware module */
3604 static struct pci_device_id iwl_hw_card_ids
[] = {
3605 #ifdef CONFIG_IWL4965
3606 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3607 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3608 #endif /* CONFIG_IWL4965 */
3609 #ifdef CONFIG_IWL5000
3610 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
3611 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
3612 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
3613 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
3614 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
3615 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
3616 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3617 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3618 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
3619 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
3620 /* 5350 WiFi/WiMax */
3621 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
3622 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
3623 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
3624 /* 5150 Wifi/WiMax */
3625 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3626 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
3627 /* 6000/6050 Series */
3628 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg
)},
3629 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg
)},
3630 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg
)},
3631 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3632 {IWL_PCI_DEVICE(0x422C, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3633 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3634 {IWL_PCI_DEVICE(0x4239, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3635 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
3636 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
3637 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3638 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3639 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
3640 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
3641 /* 1000 Series WiFi */
3642 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
3643 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
3644 #endif /* CONFIG_IWL5000 */
3648 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
3650 static struct pci_driver iwl_driver
= {
3652 .id_table
= iwl_hw_card_ids
,
3653 .probe
= iwl_pci_probe
,
3654 .remove
= __devexit_p(iwl_pci_remove
),
3656 .suspend
= iwl_pci_suspend
,
3657 .resume
= iwl_pci_resume
,
3661 static int __init
iwl_init(void)
3665 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
3666 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
3668 ret
= iwlagn_rate_control_register();
3670 printk(KERN_ERR DRV_NAME
3671 "Unable to register rate control algorithm: %d\n", ret
);
3675 ret
= pci_register_driver(&iwl_driver
);
3677 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
3678 goto error_register
;
3684 iwlagn_rate_control_unregister();
3688 static void __exit
iwl_exit(void)
3690 pci_unregister_driver(&iwl_driver
);
3691 iwlagn_rate_control_unregister();
3694 module_exit(iwl_exit
);
3695 module_init(iwl_init
);