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 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 priv
->cfg
->ops
->smgmt
->clear_station_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 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
250 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
251 iwlcore_commit_rxon(priv
);
254 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
256 struct list_head
*element
;
258 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
261 while (!list_empty(&priv
->free_frames
)) {
262 element
= priv
->free_frames
.next
;
264 kfree(list_entry(element
, struct iwl_frame
, list
));
265 priv
->frames_count
--;
268 if (priv
->frames_count
) {
269 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
271 priv
->frames_count
= 0;
275 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
277 struct iwl_frame
*frame
;
278 struct list_head
*element
;
279 if (list_empty(&priv
->free_frames
)) {
280 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
282 IWL_ERR(priv
, "Could not allocate frame!\n");
286 priv
->frames_count
++;
290 element
= priv
->free_frames
.next
;
292 return list_entry(element
, struct iwl_frame
, list
);
295 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
297 memset(frame
, 0, sizeof(*frame
));
298 list_add(&frame
->list
, &priv
->free_frames
);
301 static unsigned int iwl_fill_beacon_frame(struct iwl_priv
*priv
,
302 struct ieee80211_hdr
*hdr
,
305 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
306 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
307 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
310 if (priv
->ibss_beacon
->len
> left
)
313 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
315 return priv
->ibss_beacon
->len
;
318 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
319 struct iwl_frame
*frame
, u8 rate
)
321 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
322 unsigned int frame_size
;
324 tx_beacon_cmd
= &frame
->u
.beacon
;
325 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
327 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
328 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
330 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
331 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
333 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
334 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
336 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
337 tx_beacon_cmd
->tx
.rate_n_flags
=
338 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
340 tx_beacon_cmd
->tx
.rate_n_flags
=
341 iwl_hw_set_rate_n_flags(rate
, 0);
343 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
345 TX_CMD_FLG_STA_RATE_MSK
;
347 return sizeof(*tx_beacon_cmd
) + frame_size
;
349 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
351 struct iwl_frame
*frame
;
352 unsigned int frame_size
;
356 frame
= iwl_get_free_frame(priv
);
359 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
364 rate
= iwl_rate_get_lowest_plcp(priv
);
366 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
, rate
);
368 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
371 iwl_free_frame(priv
, frame
);
376 static inline dma_addr_t
iwl_tfd_tb_get_addr(struct iwl_tfd
*tfd
, u8 idx
)
378 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
380 dma_addr_t addr
= get_unaligned_le32(&tb
->lo
);
381 if (sizeof(dma_addr_t
) > sizeof(u32
))
383 ((dma_addr_t
)(le16_to_cpu(tb
->hi_n_len
) & 0xF) << 16) << 16;
388 static inline u16
iwl_tfd_tb_get_len(struct iwl_tfd
*tfd
, u8 idx
)
390 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
392 return le16_to_cpu(tb
->hi_n_len
) >> 4;
395 static inline void iwl_tfd_set_tb(struct iwl_tfd
*tfd
, u8 idx
,
396 dma_addr_t addr
, u16 len
)
398 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
399 u16 hi_n_len
= len
<< 4;
401 put_unaligned_le32(addr
, &tb
->lo
);
402 if (sizeof(dma_addr_t
) > sizeof(u32
))
403 hi_n_len
|= ((addr
>> 16) >> 16) & 0xF;
405 tb
->hi_n_len
= cpu_to_le16(hi_n_len
);
407 tfd
->num_tbs
= idx
+ 1;
410 static inline u8
iwl_tfd_get_num_tbs(struct iwl_tfd
*tfd
)
412 return tfd
->num_tbs
& 0x1f;
416 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
417 * @priv - driver private data
420 * Does NOT advance any TFD circular buffer read/write indexes
421 * Does NOT free the TFD itself (which is within circular buffer)
423 void iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
425 struct iwl_tfd
*tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
427 struct pci_dev
*dev
= priv
->pci_dev
;
428 int index
= txq
->q
.read_ptr
;
432 tfd
= &tfd_tmp
[index
];
434 /* Sanity check on number of chunks */
435 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
437 if (num_tbs
>= IWL_NUM_OF_TBS
) {
438 IWL_ERR(priv
, "Too many chunks: %i\n", num_tbs
);
439 /* @todo issue fatal error, it is quite serious situation */
445 pci_unmap_single(dev
,
446 pci_unmap_addr(&txq
->cmd
[index
]->meta
, mapping
),
447 pci_unmap_len(&txq
->cmd
[index
]->meta
, len
),
448 PCI_DMA_BIDIRECTIONAL
);
450 /* Unmap chunks, if any. */
451 for (i
= 1; i
< num_tbs
; i
++) {
452 pci_unmap_single(dev
, iwl_tfd_tb_get_addr(tfd
, i
),
453 iwl_tfd_tb_get_len(tfd
, i
), PCI_DMA_TODEVICE
);
456 dev_kfree_skb(txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1]);
457 txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1] = NULL
;
462 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
463 struct iwl_tx_queue
*txq
,
464 dma_addr_t addr
, u16 len
,
468 struct iwl_tfd
*tfd
, *tfd_tmp
;
472 tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
473 tfd
= &tfd_tmp
[q
->write_ptr
];
476 memset(tfd
, 0, sizeof(*tfd
));
478 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
480 /* Each TFD can point to a maximum 20 Tx buffers */
481 if (num_tbs
>= IWL_NUM_OF_TBS
) {
482 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
487 BUG_ON(addr
& ~DMA_BIT_MASK(36));
488 if (unlikely(addr
& ~IWL_TX_DMA_MASK
))
489 IWL_ERR(priv
, "Unaligned address = %llx\n",
490 (unsigned long long)addr
);
492 iwl_tfd_set_tb(tfd
, num_tbs
, addr
, len
);
498 * Tell nic where to find circular buffer of Tx Frame Descriptors for
499 * given Tx queue, and enable the DMA channel used for that queue.
501 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
502 * channels supported in hardware.
504 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
,
505 struct iwl_tx_queue
*txq
)
509 int txq_id
= txq
->q
.id
;
511 spin_lock_irqsave(&priv
->lock
, flags
);
512 ret
= iwl_grab_nic_access(priv
);
514 spin_unlock_irqrestore(&priv
->lock
, flags
);
518 /* Circular buffer (TFD queue in DRAM) physical base address */
519 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
520 txq
->q
.dma_addr
>> 8);
522 iwl_release_nic_access(priv
);
523 spin_unlock_irqrestore(&priv
->lock
, flags
);
529 /******************************************************************************
531 * Misc. internal state and helper functions
533 ******************************************************************************/
535 #define MAX_UCODE_BEACON_INTERVAL 4096
537 static u16
iwl_adjust_beacon_interval(u16 beacon_val
)
540 u16 beacon_factor
= 0;
542 beacon_factor
= (beacon_val
+ MAX_UCODE_BEACON_INTERVAL
)
543 / MAX_UCODE_BEACON_INTERVAL
;
544 new_val
= beacon_val
/ beacon_factor
;
547 new_val
= MAX_UCODE_BEACON_INTERVAL
;
552 static void iwl_setup_rxon_timing(struct iwl_priv
*priv
)
555 s32 interval_tm
, rem
;
557 struct ieee80211_conf
*conf
= NULL
;
560 conf
= ieee80211_get_hw_conf(priv
->hw
);
562 spin_lock_irqsave(&priv
->lock
, flags
);
563 priv
->rxon_timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
564 priv
->rxon_timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
566 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
567 beacon_int
= iwl_adjust_beacon_interval(priv
->beacon_int
);
568 priv
->rxon_timing
.atim_window
= 0;
570 beacon_int
= iwl_adjust_beacon_interval(
571 priv
->vif
->bss_conf
.beacon_int
);
573 /* TODO: we need to get atim_window from upper stack
574 * for now we set to 0 */
575 priv
->rxon_timing
.atim_window
= 0;
578 priv
->rxon_timing
.beacon_interval
= cpu_to_le16(beacon_int
);
580 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
581 interval_tm
= beacon_int
* 1024;
582 rem
= do_div(tsf
, interval_tm
);
583 priv
->rxon_timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
585 spin_unlock_irqrestore(&priv
->lock
, flags
);
586 IWL_DEBUG_ASSOC(priv
, "beacon interval %d beacon timer %d beacon tim %d\n",
587 le16_to_cpu(priv
->rxon_timing
.beacon_interval
),
588 le32_to_cpu(priv
->rxon_timing
.beacon_init_val
),
589 le16_to_cpu(priv
->rxon_timing
.atim_window
));
592 /******************************************************************************
594 * Generic RX handler implementations
596 ******************************************************************************/
597 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
598 struct iwl_rx_mem_buffer
*rxb
)
600 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
601 struct iwl_alive_resp
*palive
;
602 struct delayed_work
*pwork
;
604 palive
= &pkt
->u
.alive_frame
;
606 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
608 palive
->is_valid
, palive
->ver_type
,
609 palive
->ver_subtype
);
611 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
612 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
613 memcpy(&priv
->card_alive_init
,
615 sizeof(struct iwl_init_alive_resp
));
616 pwork
= &priv
->init_alive_start
;
618 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
619 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
620 sizeof(struct iwl_alive_resp
));
621 pwork
= &priv
->alive_start
;
624 /* We delay the ALIVE response by 5ms to
625 * give the HW RF Kill time to activate... */
626 if (palive
->is_valid
== UCODE_VALID_OK
)
627 queue_delayed_work(priv
->workqueue
, pwork
,
628 msecs_to_jiffies(5));
630 IWL_WARN(priv
, "uCode did not respond OK.\n");
633 static void iwl_bg_beacon_update(struct work_struct
*work
)
635 struct iwl_priv
*priv
=
636 container_of(work
, struct iwl_priv
, beacon_update
);
637 struct sk_buff
*beacon
;
639 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
640 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
643 IWL_ERR(priv
, "update beacon failed\n");
647 mutex_lock(&priv
->mutex
);
648 /* new beacon skb is allocated every time; dispose previous.*/
649 if (priv
->ibss_beacon
)
650 dev_kfree_skb(priv
->ibss_beacon
);
652 priv
->ibss_beacon
= beacon
;
653 mutex_unlock(&priv
->mutex
);
655 iwl_send_beacon_cmd(priv
);
659 * iwl_bg_statistics_periodic - Timer callback to queue statistics
661 * This callback is provided in order to send a statistics request.
663 * This timer function is continually reset to execute within
664 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
665 * was received. We need to ensure we receive the statistics in order
666 * to update the temperature used for calibrating the TXPOWER.
668 static void iwl_bg_statistics_periodic(unsigned long data
)
670 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
672 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
675 /* dont send host command if rf-kill is on */
676 if (!iwl_is_ready_rf(priv
))
679 iwl_send_statistics_request(priv
, CMD_ASYNC
);
682 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
683 struct iwl_rx_mem_buffer
*rxb
)
685 #ifdef CONFIG_IWLWIFI_DEBUG
686 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
687 struct iwl4965_beacon_notif
*beacon
=
688 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
689 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
691 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
692 "tsf %d %d rate %d\n",
693 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
694 beacon
->beacon_notify_hdr
.failure_frame
,
695 le32_to_cpu(beacon
->ibss_mgr_status
),
696 le32_to_cpu(beacon
->high_tsf
),
697 le32_to_cpu(beacon
->low_tsf
), rate
);
700 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
701 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
702 queue_work(priv
->workqueue
, &priv
->beacon_update
);
705 /* Handle notification from uCode that card's power state is changing
706 * due to software, hardware, or critical temperature RFKILL */
707 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
708 struct iwl_rx_mem_buffer
*rxb
)
710 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
711 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
712 unsigned long status
= priv
->status
;
714 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s\n",
715 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
716 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On");
718 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
721 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
722 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
724 if (!iwl_grab_nic_access(priv
)) {
726 priv
, HBUS_TARG_MBX_C
,
727 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
729 iwl_release_nic_access(priv
);
732 if (!(flags
& RXON_CARD_DISABLED
)) {
733 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
734 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
735 if (!iwl_grab_nic_access(priv
)) {
737 priv
, HBUS_TARG_MBX_C
,
738 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
740 iwl_release_nic_access(priv
);
744 if (flags
& RF_CARD_DISABLED
) {
745 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
746 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
747 iwl_read32(priv
, CSR_UCODE_DRV_GP1
);
748 if (!iwl_grab_nic_access(priv
))
749 iwl_release_nic_access(priv
);
753 if (flags
& HW_CARD_DISABLED
)
754 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
756 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
759 if (flags
& SW_CARD_DISABLED
)
760 set_bit(STATUS_RF_KILL_SW
, &priv
->status
);
762 clear_bit(STATUS_RF_KILL_SW
, &priv
->status
);
764 if (!(flags
& RXON_CARD_DISABLED
))
765 iwl_scan_cancel(priv
);
767 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
768 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) ||
769 (test_bit(STATUS_RF_KILL_SW
, &status
) !=
770 test_bit(STATUS_RF_KILL_SW
, &priv
->status
)))
771 queue_work(priv
->workqueue
, &priv
->rf_kill
);
773 wake_up_interruptible(&priv
->wait_command_queue
);
776 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
781 spin_lock_irqsave(&priv
->lock
, flags
);
782 ret
= iwl_grab_nic_access(priv
);
786 if (src
== IWL_PWR_SRC_VAUX
) {
787 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
788 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
789 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
790 ~APMG_PS_CTRL_MSK_PWR_SRC
);
792 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
793 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
794 ~APMG_PS_CTRL_MSK_PWR_SRC
);
797 iwl_release_nic_access(priv
);
799 spin_unlock_irqrestore(&priv
->lock
, flags
);
804 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
806 * Setup the RX handlers for each of the reply types sent from the uCode
809 * This function chains into the hardware specific files for them to setup
810 * any hardware specific handlers as well.
812 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
814 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
815 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
816 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
817 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
818 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
819 iwl_rx_pm_debug_statistics_notif
;
820 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
823 * The same handler is used for both the REPLY to a discrete
824 * statistics request from the host as well as for the periodic
825 * statistics notifications (after received beacons) from the uCode.
827 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_rx_statistics
;
828 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
830 iwl_setup_spectrum_handlers(priv
);
831 iwl_setup_rx_scan_handlers(priv
);
833 /* status change handler */
834 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
836 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
837 iwl_rx_missed_beacon_notif
;
839 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl_rx_reply_rx_phy
;
840 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl_rx_reply_rx
;
842 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl_rx_reply_compressed_ba
;
843 /* Set up hardware specific Rx handlers */
844 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
848 * iwl_rx_handle - Main entry function for receiving responses from uCode
850 * Uses the priv->rx_handlers callback function array to invoke
851 * the appropriate handlers, including command responses,
852 * frame-received notifications, and other notifications.
854 void iwl_rx_handle(struct iwl_priv
*priv
)
856 struct iwl_rx_mem_buffer
*rxb
;
857 struct iwl_rx_packet
*pkt
;
858 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
865 /* uCode's read index (stored in shared DRAM) indicates the last Rx
866 * buffer that the driver may process (last buffer filled by ucode). */
867 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
870 /* Rx interrupt, but nothing sent from uCode */
872 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
874 if (iwl_rx_queue_space(rxq
) > (RX_QUEUE_SIZE
/ 2))
880 /* If an RXB doesn't have a Rx queue slot associated with it,
881 * then a bug has been introduced in the queue refilling
882 * routines -- catch it here */
885 rxq
->queue
[i
] = NULL
;
887 pci_unmap_single(priv
->pci_dev
, rxb
->real_dma_addr
,
888 priv
->hw_params
.rx_buf_size
+ 256,
890 pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
892 /* Reclaim a command buffer only if this packet is a response
893 * to a (driver-originated) command.
894 * If the packet (e.g. Rx frame) originated from uCode,
895 * there is no command buffer to reclaim.
896 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
897 * but apparently a few don't get set; catch them here. */
898 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
899 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
900 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
901 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
902 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
903 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
904 (pkt
->hdr
.cmd
!= REPLY_TX
);
906 /* Based on type of command response or notification,
907 * handle those that need handling via function in
908 * rx_handlers table. See iwl_setup_rx_handlers() */
909 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
910 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
911 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
912 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
913 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
915 /* No handling needed */
917 "r %d i %d No handler needed for %s, 0x%02x\n",
918 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
923 /* Invoke any callbacks, transfer the skb to caller, and
924 * fire off the (possibly) blocking iwl_send_cmd()
925 * as we reclaim the driver command queue */
927 iwl_tx_cmd_complete(priv
, rxb
);
929 IWL_WARN(priv
, "Claim null rxb?\n");
932 /* For now we just don't re-use anything. We can tweak this
933 * later to try and re-use notification packets and SKBs that
934 * fail to Rx correctly */
935 if (rxb
->skb
!= NULL
) {
936 priv
->alloc_rxb_skb
--;
937 dev_kfree_skb_any(rxb
->skb
);
941 spin_lock_irqsave(&rxq
->lock
, flags
);
942 list_add_tail(&rxb
->list
, &priv
->rxq
.rx_used
);
943 spin_unlock_irqrestore(&rxq
->lock
, flags
);
944 i
= (i
+ 1) & RX_QUEUE_MASK
;
945 /* If there are a lot of unused frames,
946 * restock the Rx queue so ucode wont assert. */
951 iwl_rx_queue_restock(priv
);
957 /* Backtrack one entry */
959 iwl_rx_queue_restock(priv
);
962 /* call this function to flush any scheduled tasklet */
963 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
965 /* wait to make sure we flush pending tasklet*/
966 synchronize_irq(priv
->pci_dev
->irq
);
967 tasklet_kill(&priv
->irq_tasklet
);
970 static void iwl_error_recovery(struct iwl_priv
*priv
)
974 memcpy(&priv
->staging_rxon
, &priv
->recovery_rxon
,
975 sizeof(priv
->staging_rxon
));
976 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
977 iwlcore_commit_rxon(priv
);
979 iwl_rxon_add_station(priv
, priv
->bssid
, 1);
981 spin_lock_irqsave(&priv
->lock
, flags
);
982 priv
->assoc_id
= le16_to_cpu(priv
->staging_rxon
.assoc_id
);
983 priv
->error_recovering
= 0;
984 spin_unlock_irqrestore(&priv
->lock
, flags
);
987 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
989 u32 inta
, handled
= 0;
992 #ifdef CONFIG_IWLWIFI_DEBUG
996 spin_lock_irqsave(&priv
->lock
, flags
);
998 /* Ack/clear/reset pending uCode interrupts.
999 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1000 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1001 inta
= iwl_read32(priv
, CSR_INT
);
1002 iwl_write32(priv
, CSR_INT
, inta
);
1004 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1005 * Any new interrupts that happen after this, either while we're
1006 * in this tasklet, or later, will show up in next ISR/tasklet. */
1007 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1008 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1010 #ifdef CONFIG_IWLWIFI_DEBUG
1011 if (priv
->debug_level
& IWL_DL_ISR
) {
1012 /* just for debug */
1013 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1014 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1015 inta
, inta_mask
, inta_fh
);
1019 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1020 * atomic, make sure that inta covers all the interrupts that
1021 * we've discovered, even if FH interrupt came in just after
1022 * reading CSR_INT. */
1023 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1024 inta
|= CSR_INT_BIT_FH_RX
;
1025 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1026 inta
|= CSR_INT_BIT_FH_TX
;
1028 /* Now service all interrupt bits discovered above. */
1029 if (inta
& CSR_INT_BIT_HW_ERR
) {
1030 IWL_ERR(priv
, "Microcode HW error detected. Restarting.\n");
1032 /* Tell the device to stop sending interrupts */
1033 iwl_disable_interrupts(priv
);
1035 priv
->isr_stats
.hw
++;
1036 iwl_irq_handle_error(priv
);
1038 handled
|= CSR_INT_BIT_HW_ERR
;
1040 spin_unlock_irqrestore(&priv
->lock
, flags
);
1045 #ifdef CONFIG_IWLWIFI_DEBUG
1046 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1047 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1048 if (inta
& CSR_INT_BIT_SCD
) {
1049 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1050 "the frame/frames.\n");
1051 priv
->isr_stats
.sch
++;
1054 /* Alive notification via Rx interrupt will do the real work */
1055 if (inta
& CSR_INT_BIT_ALIVE
) {
1056 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1057 priv
->isr_stats
.alive
++;
1061 /* Safely ignore these bits for debug checks below */
1062 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1064 /* HW RF KILL switch toggled */
1065 if (inta
& CSR_INT_BIT_RF_KILL
) {
1067 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1068 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1071 IWL_DEBUG_RF_KILL(priv
, "RF_KILL bit toggled to %s.\n",
1072 hw_rf_kill
? "disable radio" : "enable radio");
1074 priv
->isr_stats
.rfkill
++;
1076 /* driver only loads ucode once setting the interface up.
1077 * the driver allows loading the ucode even if the radio
1078 * is killed. Hence update the killswitch state here. The
1079 * rfkill handler will care about restarting if needed.
1081 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1083 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1085 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1086 queue_work(priv
->workqueue
, &priv
->rf_kill
);
1089 handled
|= CSR_INT_BIT_RF_KILL
;
1092 /* Chip got too hot and stopped itself */
1093 if (inta
& CSR_INT_BIT_CT_KILL
) {
1094 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1095 priv
->isr_stats
.ctkill
++;
1096 handled
|= CSR_INT_BIT_CT_KILL
;
1099 /* Error detected by uCode */
1100 if (inta
& CSR_INT_BIT_SW_ERR
) {
1101 IWL_ERR(priv
, "Microcode SW error detected. "
1102 " Restarting 0x%X.\n", inta
);
1103 priv
->isr_stats
.sw
++;
1104 priv
->isr_stats
.sw_err
= inta
;
1105 iwl_irq_handle_error(priv
);
1106 handled
|= CSR_INT_BIT_SW_ERR
;
1109 /* uCode wakes up after power-down sleep */
1110 if (inta
& CSR_INT_BIT_WAKEUP
) {
1111 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1112 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1113 iwl_txq_update_write_ptr(priv
, &priv
->txq
[0]);
1114 iwl_txq_update_write_ptr(priv
, &priv
->txq
[1]);
1115 iwl_txq_update_write_ptr(priv
, &priv
->txq
[2]);
1116 iwl_txq_update_write_ptr(priv
, &priv
->txq
[3]);
1117 iwl_txq_update_write_ptr(priv
, &priv
->txq
[4]);
1118 iwl_txq_update_write_ptr(priv
, &priv
->txq
[5]);
1120 priv
->isr_stats
.wakeup
++;
1122 handled
|= CSR_INT_BIT_WAKEUP
;
1125 /* All uCode command responses, including Tx command responses,
1126 * Rx "responses" (frame-received notification), and other
1127 * notifications from uCode come through here*/
1128 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1129 iwl_rx_handle(priv
);
1130 priv
->isr_stats
.rx
++;
1131 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1134 if (inta
& CSR_INT_BIT_FH_TX
) {
1135 IWL_DEBUG_ISR(priv
, "Tx interrupt\n");
1136 priv
->isr_stats
.tx
++;
1137 handled
|= CSR_INT_BIT_FH_TX
;
1138 /* FH finished to write, send event */
1139 priv
->ucode_write_complete
= 1;
1140 wake_up_interruptible(&priv
->wait_command_queue
);
1143 if (inta
& ~handled
) {
1144 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1145 priv
->isr_stats
.unhandled
++;
1148 if (inta
& ~CSR_INI_SET_MASK
) {
1149 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1150 inta
& ~CSR_INI_SET_MASK
);
1151 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1154 /* Re-enable all interrupts */
1155 /* only Re-enable if diabled by irq */
1156 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1157 iwl_enable_interrupts(priv
);
1159 #ifdef CONFIG_IWLWIFI_DEBUG
1160 if (priv
->debug_level
& (IWL_DL_ISR
)) {
1161 inta
= iwl_read32(priv
, CSR_INT
);
1162 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1163 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1164 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1165 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1168 spin_unlock_irqrestore(&priv
->lock
, flags
);
1172 /******************************************************************************
1174 * uCode download functions
1176 ******************************************************************************/
1178 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1180 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1181 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1182 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1183 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1184 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1185 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1188 static void iwl_nic_start(struct iwl_priv
*priv
)
1190 /* Remove all resets to allow NIC to operate */
1191 iwl_write32(priv
, CSR_RESET
, 0);
1196 * iwl_read_ucode - Read uCode images from disk file.
1198 * Copy into buffers for card to fetch via bus-mastering
1200 static int iwl_read_ucode(struct iwl_priv
*priv
)
1202 struct iwl_ucode
*ucode
;
1203 int ret
= -EINVAL
, index
;
1204 const struct firmware
*ucode_raw
;
1205 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1206 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1207 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1211 u32 api_ver
, inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1213 /* Ask kernel firmware_class module to get the boot firmware off disk.
1214 * request_firmware() is synchronous, file is in memory on return. */
1215 for (index
= api_max
; index
>= api_min
; index
--) {
1216 sprintf(buf
, "%s%d%s", name_pre
, index
, ".ucode");
1217 ret
= request_firmware(&ucode_raw
, buf
, &priv
->pci_dev
->dev
);
1219 IWL_ERR(priv
, "%s firmware file req failed: %d\n",
1226 if (index
< api_max
)
1227 IWL_ERR(priv
, "Loaded firmware %s, "
1228 "which is deprecated. "
1229 "Please use API v%u instead.\n",
1232 IWL_DEBUG_INFO(priv
, "Got firmware '%s' file (%zd bytes) from disk\n",
1233 buf
, ucode_raw
->size
);
1241 /* Make sure that we got at least our header! */
1242 if (ucode_raw
->size
< sizeof(*ucode
)) {
1243 IWL_ERR(priv
, "File size way too small!\n");
1248 /* Data from ucode file: header followed by uCode images */
1249 ucode
= (void *)ucode_raw
->data
;
1251 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1252 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1253 inst_size
= le32_to_cpu(ucode
->inst_size
);
1254 data_size
= le32_to_cpu(ucode
->data_size
);
1255 init_size
= le32_to_cpu(ucode
->init_size
);
1256 init_data_size
= le32_to_cpu(ucode
->init_data_size
);
1257 boot_size
= le32_to_cpu(ucode
->boot_size
);
1259 /* api_ver should match the api version forming part of the
1260 * firmware filename ... but we don't check for that and only rely
1261 * on the API version read from firmware header from here on forward */
1263 if (api_ver
< api_min
|| api_ver
> api_max
) {
1264 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1265 "Driver supports v%u, firmware is v%u.\n",
1267 priv
->ucode_ver
= 0;
1271 if (api_ver
!= api_max
)
1272 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1273 "got v%u. New firmware can be obtained "
1274 "from http://www.intellinuxwireless.org.\n",
1277 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u\n",
1278 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1279 IWL_UCODE_MINOR(priv
->ucode_ver
),
1280 IWL_UCODE_API(priv
->ucode_ver
),
1281 IWL_UCODE_SERIAL(priv
->ucode_ver
));
1283 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1285 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %u\n",
1287 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %u\n",
1289 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %u\n",
1291 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %u\n",
1293 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %u\n",
1296 /* Verify size of file vs. image size info in file's header */
1297 if (ucode_raw
->size
< sizeof(*ucode
) +
1298 inst_size
+ data_size
+ init_size
+
1299 init_data_size
+ boot_size
) {
1301 IWL_DEBUG_INFO(priv
, "uCode file size %d too small\n",
1302 (int)ucode_raw
->size
);
1307 /* Verify that uCode images will fit in card's SRAM */
1308 if (inst_size
> priv
->hw_params
.max_inst_size
) {
1309 IWL_DEBUG_INFO(priv
, "uCode instr len %d too large to fit in\n",
1315 if (data_size
> priv
->hw_params
.max_data_size
) {
1316 IWL_DEBUG_INFO(priv
, "uCode data len %d too large to fit in\n",
1321 if (init_size
> priv
->hw_params
.max_inst_size
) {
1322 IWL_INFO(priv
, "uCode init instr len %d too large to fit in\n",
1327 if (init_data_size
> priv
->hw_params
.max_data_size
) {
1328 IWL_INFO(priv
, "uCode init data len %d too large to fit in\n",
1333 if (boot_size
> priv
->hw_params
.max_bsm_size
) {
1334 IWL_INFO(priv
, "uCode boot instr len %d too large to fit in\n",
1340 /* Allocate ucode buffers for card's bus-master loading ... */
1342 /* Runtime instructions and 2 copies of data:
1343 * 1) unmodified from disk
1344 * 2) backup cache for save/restore during power-downs */
1345 priv
->ucode_code
.len
= inst_size
;
1346 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1348 priv
->ucode_data
.len
= data_size
;
1349 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1351 priv
->ucode_data_backup
.len
= data_size
;
1352 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1354 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1355 !priv
->ucode_data_backup
.v_addr
)
1358 /* Initialization instructions and data */
1359 if (init_size
&& init_data_size
) {
1360 priv
->ucode_init
.len
= init_size
;
1361 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1363 priv
->ucode_init_data
.len
= init_data_size
;
1364 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1366 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1370 /* Bootstrap (instructions only, no data) */
1372 priv
->ucode_boot
.len
= boot_size
;
1373 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1375 if (!priv
->ucode_boot
.v_addr
)
1379 /* Copy images into buffers for card's bus-master reads ... */
1381 /* Runtime instructions (first block of data in file) */
1382 src
= &ucode
->data
[0];
1383 len
= priv
->ucode_code
.len
;
1384 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n", len
);
1385 memcpy(priv
->ucode_code
.v_addr
, src
, len
);
1386 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1387 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1389 /* Runtime data (2nd block)
1390 * NOTE: Copy into backup buffer will be done in iwl_up() */
1391 src
= &ucode
->data
[inst_size
];
1392 len
= priv
->ucode_data
.len
;
1393 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n", len
);
1394 memcpy(priv
->ucode_data
.v_addr
, src
, len
);
1395 memcpy(priv
->ucode_data_backup
.v_addr
, src
, len
);
1397 /* Initialization instructions (3rd block) */
1399 src
= &ucode
->data
[inst_size
+ data_size
];
1400 len
= priv
->ucode_init
.len
;
1401 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1403 memcpy(priv
->ucode_init
.v_addr
, src
, len
);
1406 /* Initialization data (4th block) */
1407 if (init_data_size
) {
1408 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
];
1409 len
= priv
->ucode_init_data
.len
;
1410 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1412 memcpy(priv
->ucode_init_data
.v_addr
, src
, len
);
1415 /* Bootstrap instructions (5th block) */
1416 src
= &ucode
->data
[inst_size
+ data_size
+ init_size
+ init_data_size
];
1417 len
= priv
->ucode_boot
.len
;
1418 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n", len
);
1419 memcpy(priv
->ucode_boot
.v_addr
, src
, len
);
1421 /* We have our copies now, allow OS release its copies */
1422 release_firmware(ucode_raw
);
1426 IWL_ERR(priv
, "failed to allocate pci memory\n");
1428 iwl_dealloc_ucode_pci(priv
);
1431 release_firmware(ucode_raw
);
1438 * iwl_alive_start - called after REPLY_ALIVE notification received
1439 * from protocol/runtime uCode (initialization uCode's
1440 * Alive gets handled by iwl_init_alive_start()).
1442 static void iwl_alive_start(struct iwl_priv
*priv
)
1446 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
1448 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
1449 /* We had an error bringing up the hardware, so take it
1450 * all the way back down so we can try again */
1451 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
1455 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1456 * This is a paranoid check, because we would not have gotten the
1457 * "runtime" alive if code weren't properly loaded. */
1458 if (iwl_verify_ucode(priv
)) {
1459 /* Runtime instruction load was bad;
1460 * take it all the way back down so we can try again */
1461 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
1465 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
1466 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
1469 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
1473 /* After the ALIVE response, we can send host commands to the uCode */
1474 set_bit(STATUS_ALIVE
, &priv
->status
);
1476 if (iwl_is_rfkill(priv
))
1479 ieee80211_wake_queues(priv
->hw
);
1481 priv
->active_rate
= priv
->rates_mask
;
1482 priv
->active_rate_basic
= priv
->rates_mask
& IWL_BASIC_RATES_MASK
;
1484 if (iwl_is_associated(priv
)) {
1485 struct iwl_rxon_cmd
*active_rxon
=
1486 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
1487 /* apply any changes in staging */
1488 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1489 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1491 /* Initialize our rx_config data */
1492 iwl_connection_init_rx_config(priv
, priv
->iw_mode
);
1494 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1495 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
1497 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
1500 /* Configure Bluetooth device coexistence support */
1501 iwl_send_bt_config(priv
);
1503 iwl_reset_run_time_calib(priv
);
1505 /* Configure the adapter for unassociated operation */
1506 iwlcore_commit_rxon(priv
);
1508 /* At this point, the NIC is initialized and operational */
1509 iwl_rf_kill_ct_config(priv
);
1511 iwl_leds_register(priv
);
1513 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
1514 set_bit(STATUS_READY
, &priv
->status
);
1515 wake_up_interruptible(&priv
->wait_command_queue
);
1517 if (priv
->error_recovering
)
1518 iwl_error_recovery(priv
);
1520 iwl_power_update_mode(priv
, 1);
1522 /* reassociate for ADHOC mode */
1523 if (priv
->vif
&& (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)) {
1524 struct sk_buff
*beacon
= ieee80211_beacon_get(priv
->hw
,
1527 iwl_mac_beacon_update(priv
->hw
, beacon
);
1531 if (test_and_clear_bit(STATUS_MODE_PENDING
, &priv
->status
))
1532 iwl_set_mode(priv
, priv
->iw_mode
);
1537 queue_work(priv
->workqueue
, &priv
->restart
);
1540 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
1542 static void __iwl_down(struct iwl_priv
*priv
)
1544 unsigned long flags
;
1545 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1547 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
1550 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1552 iwl_leds_unregister(priv
);
1554 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
1556 /* Unblock any waiting calls */
1557 wake_up_interruptible_all(&priv
->wait_command_queue
);
1559 /* Wipe out the EXIT_PENDING status bit if we are not actually
1560 * exiting the module */
1562 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1564 /* stop and reset the on-board processor */
1565 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
1567 /* tell the device to stop sending interrupts */
1568 spin_lock_irqsave(&priv
->lock
, flags
);
1569 iwl_disable_interrupts(priv
);
1570 spin_unlock_irqrestore(&priv
->lock
, flags
);
1571 iwl_synchronize_irq(priv
);
1573 if (priv
->mac80211_registered
)
1574 ieee80211_stop_queues(priv
->hw
);
1576 /* If we have not previously called iwl_init() then
1577 * clear all bits but the RF Kill bits and return */
1578 if (!iwl_is_init(priv
)) {
1579 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1581 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1583 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1584 STATUS_GEO_CONFIGURED
|
1585 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1586 STATUS_EXIT_PENDING
;
1590 /* ...otherwise clear out all the status bits but the RF Kill
1591 * bits and continue taking the NIC down. */
1592 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
1594 test_bit(STATUS_RF_KILL_SW
, &priv
->status
) <<
1596 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
1597 STATUS_GEO_CONFIGURED
|
1598 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
1600 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
1601 STATUS_EXIT_PENDING
;
1603 spin_lock_irqsave(&priv
->lock
, flags
);
1604 iwl_clear_bit(priv
, CSR_GP_CNTRL
,
1605 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
1606 spin_unlock_irqrestore(&priv
->lock
, flags
);
1608 iwl_txq_ctx_stop(priv
);
1611 spin_lock_irqsave(&priv
->lock
, flags
);
1612 if (!iwl_grab_nic_access(priv
)) {
1613 iwl_write_prph(priv
, APMG_CLK_DIS_REG
,
1614 APMG_CLK_VAL_DMA_CLK_RQT
);
1615 iwl_release_nic_access(priv
);
1617 spin_unlock_irqrestore(&priv
->lock
, flags
);
1621 /* FIXME: apm_ops.suspend(priv) */
1623 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
1625 priv
->cfg
->ops
->lib
->apm_ops
.reset(priv
);
1627 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
1629 if (priv
->ibss_beacon
)
1630 dev_kfree_skb(priv
->ibss_beacon
);
1631 priv
->ibss_beacon
= NULL
;
1633 /* clear out any free frames */
1634 iwl_clear_free_frames(priv
);
1637 static void iwl_down(struct iwl_priv
*priv
)
1639 mutex_lock(&priv
->mutex
);
1641 mutex_unlock(&priv
->mutex
);
1643 iwl_cancel_deferred_work(priv
);
1646 #define MAX_HW_RESTARTS 5
1648 static int __iwl_up(struct iwl_priv
*priv
)
1653 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1654 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
1658 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
1659 IWL_ERR(priv
, "ucode not available for device bringup\n");
1663 /* If platform's RF_KILL switch is NOT set to KILL */
1664 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
1665 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1667 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1669 if (iwl_is_rfkill(priv
)) {
1670 iwl_enable_interrupts(priv
);
1671 IWL_WARN(priv
, "Radio disabled by %s RF Kill switch\n",
1672 test_bit(STATUS_RF_KILL_HW
, &priv
->status
) ? "HW" : "SW");
1676 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1678 ret
= iwl_hw_nic_init(priv
);
1680 IWL_ERR(priv
, "Unable to init nic\n");
1684 /* make sure rfkill handshake bits are cleared */
1685 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1686 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1687 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
1689 /* clear (again), then enable host interrupts */
1690 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
1691 iwl_enable_interrupts(priv
);
1693 /* really make sure rfkill handshake bits are cleared */
1694 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1695 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
1697 /* Copy original ucode data image from disk into backup cache.
1698 * This will be used to initialize the on-board processor's
1699 * data SRAM for a clean start when the runtime program first loads. */
1700 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
1701 priv
->ucode_data
.len
);
1703 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
1705 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
1707 /* load bootstrap state machine,
1708 * load bootstrap program into processor's memory,
1709 * prepare to load the "initialize" uCode */
1710 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
1713 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
1718 /* Clear out the uCode error bit if it is set */
1719 clear_bit(STATUS_FW_ERROR
, &priv
->status
);
1721 /* start card; "initialize" will load runtime ucode */
1722 iwl_nic_start(priv
);
1724 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
1729 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1731 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
1733 /* tried to restart and config the device for as long as our
1734 * patience could withstand */
1735 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
1740 /*****************************************************************************
1742 * Workqueue callbacks
1744 *****************************************************************************/
1746 static void iwl_bg_init_alive_start(struct work_struct
*data
)
1748 struct iwl_priv
*priv
=
1749 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
1751 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1754 mutex_lock(&priv
->mutex
);
1755 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
1756 mutex_unlock(&priv
->mutex
);
1759 static void iwl_bg_alive_start(struct work_struct
*data
)
1761 struct iwl_priv
*priv
=
1762 container_of(data
, struct iwl_priv
, alive_start
.work
);
1764 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1767 mutex_lock(&priv
->mutex
);
1768 iwl_alive_start(priv
);
1769 mutex_unlock(&priv
->mutex
);
1772 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
1774 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1775 run_time_calib_work
);
1777 mutex_lock(&priv
->mutex
);
1779 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1780 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1781 mutex_unlock(&priv
->mutex
);
1785 if (priv
->start_calib
) {
1786 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
1788 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
1791 mutex_unlock(&priv
->mutex
);
1795 static void iwl_bg_up(struct work_struct
*data
)
1797 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, up
);
1799 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1802 mutex_lock(&priv
->mutex
);
1804 mutex_unlock(&priv
->mutex
);
1805 iwl_rfkill_set_hw_state(priv
);
1808 static void iwl_bg_restart(struct work_struct
*data
)
1810 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
1812 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1816 queue_work(priv
->workqueue
, &priv
->up
);
1819 static void iwl_bg_rx_replenish(struct work_struct
*data
)
1821 struct iwl_priv
*priv
=
1822 container_of(data
, struct iwl_priv
, rx_replenish
);
1824 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1827 mutex_lock(&priv
->mutex
);
1828 iwl_rx_replenish(priv
);
1829 mutex_unlock(&priv
->mutex
);
1832 #define IWL_DELAY_NEXT_SCAN (HZ*2)
1834 void iwl_post_associate(struct iwl_priv
*priv
)
1836 struct ieee80211_conf
*conf
= NULL
;
1838 unsigned long flags
;
1840 if (priv
->iw_mode
== NL80211_IFTYPE_AP
) {
1841 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
1845 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
1846 priv
->assoc_id
, priv
->active_rxon
.bssid_addr
);
1849 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1853 if (!priv
->vif
|| !priv
->is_open
)
1856 iwl_power_cancel_timeout(priv
);
1857 iwl_scan_cancel_timeout(priv
, 200);
1859 conf
= ieee80211_get_hw_conf(priv
->hw
);
1861 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1862 iwlcore_commit_rxon(priv
);
1864 iwl_setup_rxon_timing(priv
);
1865 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
1866 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
1868 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
1869 "Attempting to continue.\n");
1871 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1873 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1875 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
1876 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
1878 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
1880 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
1881 priv
->assoc_id
, priv
->beacon_int
);
1883 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1884 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1886 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1888 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
1889 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1890 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1892 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1894 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
1895 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1899 iwlcore_commit_rxon(priv
);
1901 switch (priv
->iw_mode
) {
1902 case NL80211_IFTYPE_STATION
:
1905 case NL80211_IFTYPE_ADHOC
:
1907 /* assume default assoc id */
1910 iwl_rxon_add_station(priv
, priv
->bssid
, 0);
1911 iwl_send_beacon_cmd(priv
);
1916 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
1917 __func__
, priv
->iw_mode
);
1921 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
1922 priv
->assoc_station_added
= 1;
1924 spin_lock_irqsave(&priv
->lock
, flags
);
1925 iwl_activate_qos(priv
, 0);
1926 spin_unlock_irqrestore(&priv
->lock
, flags
);
1928 /* the chain noise calibration will enabled PM upon completion
1929 * If chain noise has already been run, then we need to enable
1930 * power management here */
1931 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
1932 iwl_power_enable_management(priv
);
1934 /* Enable Rx differential gain and sensitivity calibrations */
1935 iwl_chain_noise_reset(priv
);
1936 priv
->start_calib
= 1;
1940 /*****************************************************************************
1942 * mac80211 entry point functions
1944 *****************************************************************************/
1946 #define UCODE_READY_TIMEOUT (4 * HZ)
1948 static int iwl_mac_start(struct ieee80211_hw
*hw
)
1950 struct iwl_priv
*priv
= hw
->priv
;
1953 IWL_DEBUG_MAC80211(priv
, "enter\n");
1955 /* we should be verifying the device is ready to be opened */
1956 mutex_lock(&priv
->mutex
);
1958 memset(&priv
->staging_rxon
, 0, sizeof(struct iwl_rxon_cmd
));
1959 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
1960 * ucode filename and max sizes are card-specific. */
1962 if (!priv
->ucode_code
.len
) {
1963 ret
= iwl_read_ucode(priv
);
1965 IWL_ERR(priv
, "Could not read microcode: %d\n", ret
);
1966 mutex_unlock(&priv
->mutex
);
1971 ret
= __iwl_up(priv
);
1973 mutex_unlock(&priv
->mutex
);
1975 iwl_rfkill_set_hw_state(priv
);
1980 if (iwl_is_rfkill(priv
))
1983 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
1985 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
1986 * mac80211 will not be run successfully. */
1987 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
1988 test_bit(STATUS_READY
, &priv
->status
),
1989 UCODE_READY_TIMEOUT
);
1991 if (!test_bit(STATUS_READY
, &priv
->status
)) {
1992 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
1993 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2000 IWL_DEBUG_MAC80211(priv
, "leave\n");
2004 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2006 struct iwl_priv
*priv
= hw
->priv
;
2008 IWL_DEBUG_MAC80211(priv
, "enter\n");
2010 if (!priv
->is_open
) {
2011 IWL_DEBUG_MAC80211(priv
, "leave - skip\n");
2017 if (iwl_is_ready_rf(priv
)) {
2018 /* stop mac, cancel any scan request and clear
2019 * RXON_FILTER_ASSOC_MSK BIT
2021 mutex_lock(&priv
->mutex
);
2022 iwl_scan_cancel_timeout(priv
, 100);
2023 mutex_unlock(&priv
->mutex
);
2028 flush_workqueue(priv
->workqueue
);
2030 /* enable interrupts again in order to receive rfkill changes */
2031 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2032 iwl_enable_interrupts(priv
);
2034 IWL_DEBUG_MAC80211(priv
, "leave\n");
2037 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2039 struct iwl_priv
*priv
= hw
->priv
;
2041 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2043 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2044 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2046 if (iwl_tx_skb(priv
, skb
))
2047 dev_kfree_skb_any(skb
);
2049 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2050 return NETDEV_TX_OK
;
2053 void iwl_config_ap(struct iwl_priv
*priv
)
2056 unsigned long flags
;
2058 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2061 /* The following should be done only at AP bring up */
2062 if (!iwl_is_associated(priv
)) {
2064 /* RXON - unassoc (to set timing command) */
2065 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2066 iwlcore_commit_rxon(priv
);
2069 iwl_setup_rxon_timing(priv
);
2070 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2071 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2073 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2074 "Attempting to continue.\n");
2076 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2077 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2079 /* FIXME: what should be the assoc_id for AP? */
2080 priv
->staging_rxon
.assoc_id
= cpu_to_le16(priv
->assoc_id
);
2081 if (priv
->assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2082 priv
->staging_rxon
.flags
|=
2083 RXON_FLG_SHORT_PREAMBLE_MSK
;
2085 priv
->staging_rxon
.flags
&=
2086 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2088 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2089 if (priv
->assoc_capability
&
2090 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2091 priv
->staging_rxon
.flags
|=
2092 RXON_FLG_SHORT_SLOT_MSK
;
2094 priv
->staging_rxon
.flags
&=
2095 ~RXON_FLG_SHORT_SLOT_MSK
;
2097 if (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
)
2098 priv
->staging_rxon
.flags
&=
2099 ~RXON_FLG_SHORT_SLOT_MSK
;
2101 /* restore RXON assoc */
2102 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2103 iwlcore_commit_rxon(priv
);
2104 spin_lock_irqsave(&priv
->lock
, flags
);
2105 iwl_activate_qos(priv
, 1);
2106 spin_unlock_irqrestore(&priv
->lock
, flags
);
2107 iwl_rxon_add_station(priv
, iwl_bcast_addr
, 0);
2109 iwl_send_beacon_cmd(priv
);
2111 /* FIXME - we need to add code here to detect a totally new
2112 * configuration, reset the AP, unassoc, rxon timing, assoc,
2113 * clear sta table, add BCAST sta... */
2116 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
2117 struct ieee80211_key_conf
*keyconf
, const u8
*addr
,
2118 u32 iv32
, u16
*phase1key
)
2121 struct iwl_priv
*priv
= hw
->priv
;
2122 IWL_DEBUG_MAC80211(priv
, "enter\n");
2124 iwl_update_tkip_key(priv
, keyconf
, addr
, iv32
, phase1key
);
2126 IWL_DEBUG_MAC80211(priv
, "leave\n");
2129 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2130 struct ieee80211_vif
*vif
,
2131 struct ieee80211_sta
*sta
,
2132 struct ieee80211_key_conf
*key
)
2134 struct iwl_priv
*priv
= hw
->priv
;
2138 bool is_default_wep_key
= false;
2140 IWL_DEBUG_MAC80211(priv
, "enter\n");
2142 if (priv
->hw_params
.sw_crypto
) {
2143 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
2146 addr
= sta
? sta
->addr
: iwl_bcast_addr
;
2147 sta_id
= priv
->cfg
->ops
->smgmt
->find_station(priv
, addr
);
2148 if (sta_id
== IWL_INVALID_STATION
) {
2149 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
2155 mutex_lock(&priv
->mutex
);
2156 iwl_scan_cancel_timeout(priv
, 100);
2157 mutex_unlock(&priv
->mutex
);
2159 /* If we are getting WEP group key and we didn't receive any key mapping
2160 * so far, we are in legacy wep mode (group key only), otherwise we are
2162 * In legacy wep mode, we use another host command to the uCode */
2163 if (key
->alg
== ALG_WEP
&& sta_id
== priv
->hw_params
.bcast_sta_id
&&
2164 priv
->iw_mode
!= NL80211_IFTYPE_AP
) {
2166 is_default_wep_key
= !priv
->key_mapping_key
;
2168 is_default_wep_key
=
2169 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
2174 if (is_default_wep_key
)
2175 ret
= iwl_set_default_wep_key(priv
, key
);
2177 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
2179 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
2182 if (is_default_wep_key
)
2183 ret
= iwl_remove_default_wep_key(priv
, key
);
2185 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
2187 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
2193 IWL_DEBUG_MAC80211(priv
, "leave\n");
2198 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
2199 enum ieee80211_ampdu_mlme_action action
,
2200 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
2202 struct iwl_priv
*priv
= hw
->priv
;
2205 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
2208 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
2212 case IEEE80211_AMPDU_RX_START
:
2213 IWL_DEBUG_HT(priv
, "start Rx\n");
2214 return iwl_sta_rx_agg_start(priv
, sta
->addr
, tid
, *ssn
);
2215 case IEEE80211_AMPDU_RX_STOP
:
2216 IWL_DEBUG_HT(priv
, "stop Rx\n");
2217 ret
= iwl_sta_rx_agg_stop(priv
, sta
->addr
, tid
);
2218 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2222 case IEEE80211_AMPDU_TX_START
:
2223 IWL_DEBUG_HT(priv
, "start Tx\n");
2224 return iwl_tx_agg_start(priv
, sta
->addr
, tid
, ssn
);
2225 case IEEE80211_AMPDU_TX_STOP
:
2226 IWL_DEBUG_HT(priv
, "stop Tx\n");
2227 ret
= iwl_tx_agg_stop(priv
, sta
->addr
, tid
);
2228 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2233 IWL_DEBUG_HT(priv
, "unknown\n");
2240 static int iwl_mac_get_stats(struct ieee80211_hw
*hw
,
2241 struct ieee80211_low_level_stats
*stats
)
2243 struct iwl_priv
*priv
= hw
->priv
;
2246 IWL_DEBUG_MAC80211(priv
, "enter\n");
2247 IWL_DEBUG_MAC80211(priv
, "leave\n");
2252 /*****************************************************************************
2256 *****************************************************************************/
2258 #ifdef CONFIG_IWLWIFI_DEBUG
2261 * The following adds a new attribute to the sysfs representation
2262 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2263 * used for controlling the debug level.
2265 * See the level definitions in iwl for details.
2268 static ssize_t
show_debug_level(struct device
*d
,
2269 struct device_attribute
*attr
, char *buf
)
2271 struct iwl_priv
*priv
= d
->driver_data
;
2273 return sprintf(buf
, "0x%08X\n", priv
->debug_level
);
2275 static ssize_t
store_debug_level(struct device
*d
,
2276 struct device_attribute
*attr
,
2277 const char *buf
, size_t count
)
2279 struct iwl_priv
*priv
= d
->driver_data
;
2283 ret
= strict_strtoul(buf
, 0, &val
);
2285 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
2287 priv
->debug_level
= val
;
2289 return strnlen(buf
, count
);
2292 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
2293 show_debug_level
, store_debug_level
);
2296 #endif /* CONFIG_IWLWIFI_DEBUG */
2299 static ssize_t
show_version(struct device
*d
,
2300 struct device_attribute
*attr
, char *buf
)
2302 struct iwl_priv
*priv
= d
->driver_data
;
2303 struct iwl_alive_resp
*palive
= &priv
->card_alive
;
2307 if (palive
->is_valid
)
2308 pos
+= sprintf(buf
+ pos
,
2309 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
2310 "fw type: 0x%01X 0x%01X\n",
2311 palive
->ucode_major
, palive
->ucode_minor
,
2312 palive
->sw_rev
[0], palive
->sw_rev
[1],
2313 palive
->ver_type
, palive
->ver_subtype
);
2315 pos
+= sprintf(buf
+ pos
, "fw not loaded\n");
2318 eeprom_ver
= iwl_eeprom_query16(priv
, EEPROM_VERSION
);
2319 pos
+= sprintf(buf
+ pos
, "EEPROM version: 0x%x\n",
2322 pos
+= sprintf(buf
+ pos
, "EEPROM not initialzed\n");
2328 static DEVICE_ATTR(version
, S_IWUSR
| S_IRUGO
, show_version
, NULL
);
2330 static ssize_t
show_temperature(struct device
*d
,
2331 struct device_attribute
*attr
, char *buf
)
2333 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2335 if (!iwl_is_alive(priv
))
2338 return sprintf(buf
, "%d\n", priv
->temperature
);
2341 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
2343 static ssize_t
show_tx_power(struct device
*d
,
2344 struct device_attribute
*attr
, char *buf
)
2346 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2348 if (!iwl_is_ready_rf(priv
))
2349 return sprintf(buf
, "off\n");
2351 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
2354 static ssize_t
store_tx_power(struct device
*d
,
2355 struct device_attribute
*attr
,
2356 const char *buf
, size_t count
)
2358 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2362 ret
= strict_strtoul(buf
, 10, &val
);
2364 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
2366 iwl_set_tx_power(priv
, val
, false);
2371 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
2373 static ssize_t
show_flags(struct device
*d
,
2374 struct device_attribute
*attr
, char *buf
)
2376 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2378 return sprintf(buf
, "0x%04X\n", priv
->active_rxon
.flags
);
2381 static ssize_t
store_flags(struct device
*d
,
2382 struct device_attribute
*attr
,
2383 const char *buf
, size_t count
)
2385 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2388 int ret
= strict_strtoul(buf
, 0, &val
);
2393 mutex_lock(&priv
->mutex
);
2394 if (le32_to_cpu(priv
->staging_rxon
.flags
) != flags
) {
2395 /* Cancel any currently running scans... */
2396 if (iwl_scan_cancel_timeout(priv
, 100))
2397 IWL_WARN(priv
, "Could not cancel scan.\n");
2399 IWL_DEBUG_INFO(priv
, "Commit rxon.flags = 0x%04X\n", flags
);
2400 priv
->staging_rxon
.flags
= cpu_to_le32(flags
);
2401 iwlcore_commit_rxon(priv
);
2404 mutex_unlock(&priv
->mutex
);
2409 static DEVICE_ATTR(flags
, S_IWUSR
| S_IRUGO
, show_flags
, store_flags
);
2411 static ssize_t
show_filter_flags(struct device
*d
,
2412 struct device_attribute
*attr
, char *buf
)
2414 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2416 return sprintf(buf
, "0x%04X\n",
2417 le32_to_cpu(priv
->active_rxon
.filter_flags
));
2420 static ssize_t
store_filter_flags(struct device
*d
,
2421 struct device_attribute
*attr
,
2422 const char *buf
, size_t count
)
2424 struct iwl_priv
*priv
= (struct iwl_priv
*)d
->driver_data
;
2427 int ret
= strict_strtoul(buf
, 0, &val
);
2430 filter_flags
= (u32
)val
;
2432 mutex_lock(&priv
->mutex
);
2433 if (le32_to_cpu(priv
->staging_rxon
.filter_flags
) != filter_flags
) {
2434 /* Cancel any currently running scans... */
2435 if (iwl_scan_cancel_timeout(priv
, 100))
2436 IWL_WARN(priv
, "Could not cancel scan.\n");
2438 IWL_DEBUG_INFO(priv
, "Committing rxon.filter_flags = "
2439 "0x%04X\n", filter_flags
);
2440 priv
->staging_rxon
.filter_flags
=
2441 cpu_to_le32(filter_flags
);
2442 iwlcore_commit_rxon(priv
);
2445 mutex_unlock(&priv
->mutex
);
2450 static DEVICE_ATTR(filter_flags
, S_IWUSR
| S_IRUGO
, show_filter_flags
,
2451 store_filter_flags
);
2453 static ssize_t
store_power_level(struct device
*d
,
2454 struct device_attribute
*attr
,
2455 const char *buf
, size_t count
)
2457 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2462 mutex_lock(&priv
->mutex
);
2464 ret
= strict_strtoul(buf
, 10, &mode
);
2468 ret
= iwl_power_set_user_mode(priv
, mode
);
2470 IWL_DEBUG_MAC80211(priv
, "failed setting power mode.\n");
2476 mutex_unlock(&priv
->mutex
);
2480 static ssize_t
show_power_level(struct device
*d
,
2481 struct device_attribute
*attr
, char *buf
)
2483 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2484 int mode
= priv
->power_data
.user_power_setting
;
2485 int system
= priv
->power_data
.system_power_setting
;
2486 int level
= priv
->power_data
.power_mode
;
2490 case IWL_POWER_SYS_AUTO
:
2491 p
+= sprintf(p
, "SYSTEM:auto");
2493 case IWL_POWER_SYS_AC
:
2494 p
+= sprintf(p
, "SYSTEM:ac");
2496 case IWL_POWER_SYS_BATTERY
:
2497 p
+= sprintf(p
, "SYSTEM:battery");
2501 p
+= sprintf(p
, "\tMODE:%s", (mode
< IWL_POWER_AUTO
) ?
2503 p
+= sprintf(p
, "\tINDEX:%d", level
);
2504 p
+= sprintf(p
, "\n");
2508 static DEVICE_ATTR(power_level
, S_IWUSR
| S_IRUSR
, show_power_level
,
2512 static ssize_t
show_statistics(struct device
*d
,
2513 struct device_attribute
*attr
, char *buf
)
2515 struct iwl_priv
*priv
= dev_get_drvdata(d
);
2516 u32 size
= sizeof(struct iwl_notif_statistics
);
2517 u32 len
= 0, ofs
= 0;
2518 u8
*data
= (u8
*)&priv
->statistics
;
2521 if (!iwl_is_alive(priv
))
2524 mutex_lock(&priv
->mutex
);
2525 rc
= iwl_send_statistics_request(priv
, 0);
2526 mutex_unlock(&priv
->mutex
);
2530 "Error sending statistics request: 0x%08X\n", rc
);
2534 while (size
&& (PAGE_SIZE
- len
)) {
2535 hex_dump_to_buffer(data
+ ofs
, size
, 16, 1, buf
+ len
,
2536 PAGE_SIZE
- len
, 1);
2538 if (PAGE_SIZE
- len
)
2542 size
-= min(size
, 16U);
2548 static DEVICE_ATTR(statistics
, S_IRUGO
, show_statistics
, NULL
);
2551 /*****************************************************************************
2553 * driver setup and teardown
2555 *****************************************************************************/
2557 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
2559 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
2561 init_waitqueue_head(&priv
->wait_command_queue
);
2563 INIT_WORK(&priv
->up
, iwl_bg_up
);
2564 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
2565 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
2566 INIT_WORK(&priv
->rf_kill
, iwl_bg_rf_kill
);
2567 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
2568 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
2569 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
2570 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
2572 iwl_setup_scan_deferred_work(priv
);
2573 iwl_setup_power_deferred_work(priv
);
2575 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
2576 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
2578 init_timer(&priv
->statistics_periodic
);
2579 priv
->statistics_periodic
.data
= (unsigned long)priv
;
2580 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
2582 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
2583 iwl_irq_tasklet
, (unsigned long)priv
);
2586 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
2588 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
2589 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
2591 cancel_delayed_work_sync(&priv
->init_alive_start
);
2592 cancel_delayed_work(&priv
->scan_check
);
2593 cancel_delayed_work_sync(&priv
->set_power_save
);
2594 cancel_delayed_work(&priv
->alive_start
);
2595 cancel_work_sync(&priv
->beacon_update
);
2596 del_timer_sync(&priv
->statistics_periodic
);
2599 static struct attribute
*iwl_sysfs_entries
[] = {
2600 &dev_attr_flags
.attr
,
2601 &dev_attr_filter_flags
.attr
,
2602 &dev_attr_power_level
.attr
,
2603 &dev_attr_statistics
.attr
,
2604 &dev_attr_temperature
.attr
,
2605 &dev_attr_tx_power
.attr
,
2606 #ifdef CONFIG_IWLWIFI_DEBUG
2607 &dev_attr_debug_level
.attr
,
2609 &dev_attr_version
.attr
,
2614 static struct attribute_group iwl_attribute_group
= {
2615 .name
= NULL
, /* put in device directory */
2616 .attrs
= iwl_sysfs_entries
,
2619 static struct ieee80211_ops iwl_hw_ops
= {
2621 .start
= iwl_mac_start
,
2622 .stop
= iwl_mac_stop
,
2623 .add_interface
= iwl_mac_add_interface
,
2624 .remove_interface
= iwl_mac_remove_interface
,
2625 .config
= iwl_mac_config
,
2626 .configure_filter
= iwl_configure_filter
,
2627 .set_key
= iwl_mac_set_key
,
2628 .update_tkip_key
= iwl_mac_update_tkip_key
,
2629 .get_stats
= iwl_mac_get_stats
,
2630 .get_tx_stats
= iwl_mac_get_tx_stats
,
2631 .conf_tx
= iwl_mac_conf_tx
,
2632 .reset_tsf
= iwl_mac_reset_tsf
,
2633 .bss_info_changed
= iwl_bss_info_changed
,
2634 .ampdu_action
= iwl_mac_ampdu_action
,
2635 .hw_scan
= iwl_mac_hw_scan
2638 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2641 struct iwl_priv
*priv
;
2642 struct ieee80211_hw
*hw
;
2643 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
2644 unsigned long flags
;
2647 /************************
2648 * 1. Allocating HW data
2649 ************************/
2651 /* Disabling hardware scan means that mac80211 will perform scans
2652 * "the hard way", rather than using device's scan. */
2653 if (cfg
->mod_params
->disable_hw_scan
) {
2654 if (cfg
->mod_params
->debug
& IWL_DL_INFO
)
2655 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
2656 "Disabling hw_scan\n");
2657 iwl_hw_ops
.hw_scan
= NULL
;
2660 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
2666 /* At this point both hw and priv are allocated. */
2668 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
2670 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
2672 priv
->pci_dev
= pdev
;
2674 #ifdef CONFIG_IWLWIFI_DEBUG
2675 priv
->debug_level
= priv
->cfg
->mod_params
->debug
;
2676 atomic_set(&priv
->restrict_refcnt
, 0);
2679 /**************************
2680 * 2. Initializing PCI bus
2681 **************************/
2682 if (pci_enable_device(pdev
)) {
2684 goto out_ieee80211_free_hw
;
2687 pci_set_master(pdev
);
2689 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
2691 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
2693 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
2695 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
2696 /* both attempts failed: */
2698 IWL_WARN(priv
, "No suitable DMA available.\n");
2699 goto out_pci_disable_device
;
2703 err
= pci_request_regions(pdev
, DRV_NAME
);
2705 goto out_pci_disable_device
;
2707 pci_set_drvdata(pdev
, priv
);
2710 /***********************
2711 * 3. Read REV register
2712 ***********************/
2713 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
2714 if (!priv
->hw_base
) {
2716 goto out_pci_release_regions
;
2719 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
2720 (unsigned long long) pci_resource_len(pdev
, 0));
2721 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
2723 iwl_hw_detect(priv
);
2724 IWL_INFO(priv
, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
2725 priv
->cfg
->name
, priv
->hw_rev
);
2727 /* We disable the RETRY_TIMEOUT register (0x41) to keep
2728 * PCI Tx retries from interfering with C3 CPU state */
2729 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
2732 err
= priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
2734 IWL_ERR(priv
, "Failed to init APMG\n");
2740 /* Read the EEPROM */
2741 err
= iwl_eeprom_init(priv
);
2743 IWL_ERR(priv
, "Unable to init EEPROM\n");
2746 err
= iwl_eeprom_check_version(priv
);
2748 goto out_free_eeprom
;
2750 /* extract MAC Address */
2751 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
2752 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
2753 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
2755 /************************
2756 * 5. Setup HW constants
2757 ************************/
2758 if (iwl_set_hw_params(priv
)) {
2759 IWL_ERR(priv
, "failed to set hw parameters\n");
2760 goto out_free_eeprom
;
2763 /*******************
2765 *******************/
2767 err
= iwl_init_drv(priv
);
2769 goto out_free_eeprom
;
2770 /* At this point both hw and priv are initialized. */
2772 /********************
2774 ********************/
2775 spin_lock_irqsave(&priv
->lock
, flags
);
2776 iwl_disable_interrupts(priv
);
2777 spin_unlock_irqrestore(&priv
->lock
, flags
);
2779 pci_enable_msi(priv
->pci_dev
);
2781 err
= request_irq(priv
->pci_dev
->irq
, iwl_isr
, IRQF_SHARED
,
2784 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
2785 goto out_disable_msi
;
2787 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
2789 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
2793 iwl_setup_deferred_work(priv
);
2794 iwl_setup_rx_handlers(priv
);
2796 /**********************************
2797 * 8. Setup and register mac80211
2798 **********************************/
2800 /* enable interrupts if needed: hw bug w/a */
2801 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
2802 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
2803 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
2804 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
2807 iwl_enable_interrupts(priv
);
2809 err
= iwl_setup_mac(priv
);
2811 goto out_remove_sysfs
;
2813 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
2815 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
2817 /* If platform's RF_KILL switch is NOT set to KILL */
2818 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2819 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2821 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2823 err
= iwl_rfkill_init(priv
);
2825 IWL_ERR(priv
, "Unable to initialize RFKILL system. "
2826 "Ignoring error: %d\n", err
);
2828 iwl_rfkill_set_hw_state(priv
);
2830 iwl_power_initialize(priv
);
2834 destroy_workqueue(priv
->workqueue
);
2835 priv
->workqueue
= NULL
;
2836 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
2838 free_irq(priv
->pci_dev
->irq
, priv
);
2840 pci_disable_msi(priv
->pci_dev
);
2841 iwl_uninit_drv(priv
);
2843 iwl_eeprom_free(priv
);
2845 pci_iounmap(pdev
, priv
->hw_base
);
2846 out_pci_release_regions
:
2847 pci_set_drvdata(pdev
, NULL
);
2848 pci_release_regions(pdev
);
2849 out_pci_disable_device
:
2850 pci_disable_device(pdev
);
2851 out_ieee80211_free_hw
:
2852 ieee80211_free_hw(priv
->hw
);
2857 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
2859 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
2860 unsigned long flags
;
2865 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
2867 iwl_dbgfs_unregister(priv
);
2868 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
2870 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
2871 * to be called and iwl_down since we are removing the device
2872 * we need to set STATUS_EXIT_PENDING bit.
2874 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2875 if (priv
->mac80211_registered
) {
2876 ieee80211_unregister_hw(priv
->hw
);
2877 priv
->mac80211_registered
= 0;
2882 /* make sure we flush any pending irq or
2883 * tasklet for the driver
2885 spin_lock_irqsave(&priv
->lock
, flags
);
2886 iwl_disable_interrupts(priv
);
2887 spin_unlock_irqrestore(&priv
->lock
, flags
);
2889 iwl_synchronize_irq(priv
);
2891 iwl_rfkill_unregister(priv
);
2892 iwl_dealloc_ucode_pci(priv
);
2895 iwl_rx_queue_free(priv
, &priv
->rxq
);
2896 iwl_hw_txq_ctx_free(priv
);
2898 priv
->cfg
->ops
->smgmt
->clear_station_table(priv
);
2899 iwl_eeprom_free(priv
);
2902 /*netif_stop_queue(dev); */
2903 flush_workqueue(priv
->workqueue
);
2905 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
2906 * priv->workqueue... so we can't take down the workqueue
2908 destroy_workqueue(priv
->workqueue
);
2909 priv
->workqueue
= NULL
;
2911 free_irq(priv
->pci_dev
->irq
, priv
);
2912 pci_disable_msi(priv
->pci_dev
);
2913 pci_iounmap(pdev
, priv
->hw_base
);
2914 pci_release_regions(pdev
);
2915 pci_disable_device(pdev
);
2916 pci_set_drvdata(pdev
, NULL
);
2918 iwl_uninit_drv(priv
);
2920 if (priv
->ibss_beacon
)
2921 dev_kfree_skb(priv
->ibss_beacon
);
2923 ieee80211_free_hw(priv
->hw
);
2927 /*****************************************************************************
2929 * driver and module entry point
2931 *****************************************************************************/
2933 /* Hardware specific file defines the PCI IDs table for that hardware module */
2934 static struct pci_device_id iwl_hw_card_ids
[] = {
2935 #ifdef CONFIG_IWL4965
2936 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
2937 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
2938 #endif /* CONFIG_IWL4965 */
2939 #ifdef CONFIG_IWL5000
2940 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg
)},
2941 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg
)},
2942 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)},
2943 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)},
2944 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)},
2945 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)},
2946 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID
, iwl5100_agn_cfg
)},
2947 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID
, iwl5300_agn_cfg
)},
2948 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID
, iwl5300_agn_cfg
)},
2949 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID
, iwl5100_agn_cfg
)},
2950 /* 5350 WiFi/WiMax */
2951 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)},
2952 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)},
2953 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)},
2954 /* 5150 Wifi/WiMax */
2955 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID
, iwl5150_agn_cfg
)},
2956 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID
, iwl5150_agn_cfg
)},
2957 /* 6000/6050 Series */
2958 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg
)},
2959 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg
)},
2960 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg
)},
2961 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
2962 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
2963 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID
, iwl6000_2agn_cfg
)},
2964 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID
, iwl6000_3agn_cfg
)},
2965 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
2966 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
2967 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID
, iwl6050_3agn_cfg
)},
2968 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID
, iwl6050_2agn_cfg
)},
2969 /* 1000 Series WiFi */
2970 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
2971 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID
, iwl1000_bgn_cfg
)},
2972 #endif /* CONFIG_IWL5000 */
2976 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
2978 static struct pci_driver iwl_driver
= {
2980 .id_table
= iwl_hw_card_ids
,
2981 .probe
= iwl_pci_probe
,
2982 .remove
= __devexit_p(iwl_pci_remove
),
2984 .suspend
= iwl_pci_suspend
,
2985 .resume
= iwl_pci_resume
,
2989 static int __init
iwl_init(void)
2993 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
2994 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
2996 ret
= iwlagn_rate_control_register();
2998 printk(KERN_ERR DRV_NAME
2999 "Unable to register rate control algorithm: %d\n", ret
);
3003 ret
= pci_register_driver(&iwl_driver
);
3005 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
3006 goto error_register
;
3012 iwlagn_rate_control_unregister();
3016 static void __exit
iwl_exit(void)
3018 pci_unregister_driver(&iwl_driver
);
3019 iwlagn_rate_control_unregister();
3022 module_exit(iwl_exit
);
3023 module_init(iwl_init
);