1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 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/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/mac80211.h>
46 #include <asm/div64.h>
48 #define DRV_NAME "iwlagn"
50 #include "iwl-eeprom.h"
54 #include "iwl-helpers.h"
56 #include "iwl-calib.h"
60 /******************************************************************************
64 ******************************************************************************/
67 * module name, copyright, version, etc.
69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71 #ifdef CONFIG_IWLWIFI_DEBUG
77 #define DRV_VERSION IWLWIFI_VERSION VD
80 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
81 MODULE_VERSION(DRV_VERSION
);
82 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
83 MODULE_LICENSE("GPL");
84 MODULE_ALIAS("iwl4965");
87 * iwl_commit_rxon - commit staging_rxon to hardware
89 * The RXON command in staging_rxon is committed to the hardware and
90 * the active_rxon structure is updated with the new data. This
91 * function correctly transitions out of the RXON_ASSOC_MSK state if
92 * a HW tune is required based on the RXON structure changes.
94 int iwl_commit_rxon(struct iwl_priv
*priv
)
96 /* cast away the const for active_rxon in this function */
97 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
100 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
102 if (!iwl_is_alive(priv
))
105 /* always get timestamp with Rx frame */
106 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
108 ret
= iwl_check_rxon_cmd(priv
);
110 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
115 * receive commit_rxon request
116 * abort any previous channel switch if still in process
118 if (priv
->switch_rxon
.switch_in_progress
&&
119 (priv
->switch_rxon
.channel
!= priv
->staging_rxon
.channel
)) {
120 IWL_DEBUG_11H(priv
, "abort channel switch on %d\n",
121 le16_to_cpu(priv
->switch_rxon
.channel
));
122 priv
->switch_rxon
.switch_in_progress
= false;
125 /* If we don't need to send a full RXON, we can use
126 * iwl_rxon_assoc_cmd which is used to reconfigure filter
127 * and other flags for the current radio configuration. */
128 if (!iwl_full_rxon_required(priv
)) {
129 ret
= iwl_send_rxon_assoc(priv
);
131 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
135 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
136 iwl_print_rx_config_cmd(priv
);
140 /* If we are currently associated and the new config requires
141 * an RXON_ASSOC and the new config wants the associated mask enabled,
142 * we must clear the associated from the active configuration
143 * before we apply the new config */
144 if (iwl_is_associated(priv
) && new_assoc
) {
145 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
146 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
148 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
149 sizeof(struct iwl_rxon_cmd
),
152 /* If the mask clearing failed then we set
153 * active_rxon back to what it was previously */
155 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
156 IWL_ERR(priv
, "Error clearing ASSOC_MSK (%d)\n", ret
);
159 iwl_clear_ucode_stations(priv
);
160 iwl_restore_stations(priv
);
161 ret
= iwl_restore_default_wep_keys(priv
);
163 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
168 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
169 "* with%s RXON_FILTER_ASSOC_MSK\n"
172 (new_assoc
? "" : "out"),
173 le16_to_cpu(priv
->staging_rxon
.channel
),
174 priv
->staging_rxon
.bssid_addr
);
176 iwl_set_rxon_hwcrypto(priv
, !priv
->cfg
->mod_params
->sw_crypto
);
178 /* Apply the new configuration
179 * RXON unassoc clears the station table in uCode so restoration of
180 * stations is needed after it (the RXON command) completes
183 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
184 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
186 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
189 IWL_DEBUG_INFO(priv
, "Return from !new_assoc RXON.\n");
190 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
191 iwl_clear_ucode_stations(priv
);
192 iwl_restore_stations(priv
);
193 ret
= iwl_restore_default_wep_keys(priv
);
195 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
200 priv
->start_calib
= 0;
203 * allow CTS-to-self if possible for new association.
204 * this is relevant only for 5000 series and up,
205 * but will not damage 4965
207 priv
->staging_rxon
.flags
|= RXON_FLG_SELF_CTS_EN
;
209 /* Apply the new configuration
210 * RXON assoc doesn't clear the station table in uCode,
212 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
213 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
215 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
218 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
220 iwl_print_rx_config_cmd(priv
);
222 iwl_init_sensitivity(priv
);
224 /* If we issue a new RXON command which required a tune then we must
225 * send a new TXPOWER command or we won't be able to Tx any frames */
226 ret
= iwl_set_tx_power(priv
, priv
->tx_power_user_lmt
, true);
228 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
235 void iwl_update_chain_flags(struct iwl_priv
*priv
)
238 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
239 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
240 iwlcore_commit_rxon(priv
);
243 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
245 struct list_head
*element
;
247 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
250 while (!list_empty(&priv
->free_frames
)) {
251 element
= priv
->free_frames
.next
;
253 kfree(list_entry(element
, struct iwl_frame
, list
));
254 priv
->frames_count
--;
257 if (priv
->frames_count
) {
258 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
260 priv
->frames_count
= 0;
264 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
266 struct iwl_frame
*frame
;
267 struct list_head
*element
;
268 if (list_empty(&priv
->free_frames
)) {
269 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
271 IWL_ERR(priv
, "Could not allocate frame!\n");
275 priv
->frames_count
++;
279 element
= priv
->free_frames
.next
;
281 return list_entry(element
, struct iwl_frame
, list
);
284 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
286 memset(frame
, 0, sizeof(*frame
));
287 list_add(&frame
->list
, &priv
->free_frames
);
290 static u32
iwl_fill_beacon_frame(struct iwl_priv
*priv
,
291 struct ieee80211_hdr
*hdr
,
294 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
295 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
296 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
299 if (priv
->ibss_beacon
->len
> left
)
302 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
304 return priv
->ibss_beacon
->len
;
307 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
308 static void iwl_set_beacon_tim(struct iwl_priv
*priv
,
309 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
,
310 u8
*beacon
, u32 frame_size
)
313 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
316 * The index is relative to frame start but we start looking at the
317 * variable-length part of the beacon.
319 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
321 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
322 while ((tim_idx
< (frame_size
- 2)) &&
323 (beacon
[tim_idx
] != WLAN_EID_TIM
))
324 tim_idx
+= beacon
[tim_idx
+1] + 2;
326 /* If TIM field was found, set variables */
327 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
328 tx_beacon_cmd
->tim_idx
= cpu_to_le16(tim_idx
);
329 tx_beacon_cmd
->tim_size
= beacon
[tim_idx
+1];
331 IWL_WARN(priv
, "Unable to find TIM Element in beacon\n");
334 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
335 struct iwl_frame
*frame
)
337 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
342 * We have to set up the TX command, the TX Beacon command, and the
346 /* Initialize memory */
347 tx_beacon_cmd
= &frame
->u
.beacon
;
348 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
350 /* Set up TX beacon contents */
351 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
352 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
353 if (WARN_ON_ONCE(frame_size
> MAX_MPDU_SIZE
))
356 /* Set up TX command fields */
357 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
358 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
359 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
360 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
361 TX_CMD_FLG_TSF_MSK
| TX_CMD_FLG_STA_RATE_MSK
;
363 /* Set up TX beacon command fields */
364 iwl_set_beacon_tim(priv
, tx_beacon_cmd
, (u8
*)tx_beacon_cmd
->frame
,
367 /* Set up packet rate and flags */
368 rate
= iwl_rate_get_lowest_plcp(priv
);
369 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
);
370 rate_flags
= iwl_ant_idx_to_flags(priv
->mgmt_tx_ant
);
371 if ((rate
>= IWL_FIRST_CCK_RATE
) && (rate
<= IWL_LAST_CCK_RATE
))
372 rate_flags
|= RATE_MCS_CCK_MSK
;
373 tx_beacon_cmd
->tx
.rate_n_flags
= iwl_hw_set_rate_n_flags(rate
,
376 return sizeof(*tx_beacon_cmd
) + frame_size
;
378 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
380 struct iwl_frame
*frame
;
381 unsigned int frame_size
;
384 frame
= iwl_get_free_frame(priv
);
386 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
391 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
);
393 IWL_ERR(priv
, "Error configuring the beacon command\n");
394 iwl_free_frame(priv
, frame
);
398 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
401 iwl_free_frame(priv
, frame
);
406 static inline dma_addr_t
iwl_tfd_tb_get_addr(struct iwl_tfd
*tfd
, u8 idx
)
408 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
410 dma_addr_t addr
= get_unaligned_le32(&tb
->lo
);
411 if (sizeof(dma_addr_t
) > sizeof(u32
))
413 ((dma_addr_t
)(le16_to_cpu(tb
->hi_n_len
) & 0xF) << 16) << 16;
418 static inline u16
iwl_tfd_tb_get_len(struct iwl_tfd
*tfd
, u8 idx
)
420 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
422 return le16_to_cpu(tb
->hi_n_len
) >> 4;
425 static inline void iwl_tfd_set_tb(struct iwl_tfd
*tfd
, u8 idx
,
426 dma_addr_t addr
, u16 len
)
428 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
429 u16 hi_n_len
= len
<< 4;
431 put_unaligned_le32(addr
, &tb
->lo
);
432 if (sizeof(dma_addr_t
) > sizeof(u32
))
433 hi_n_len
|= ((addr
>> 16) >> 16) & 0xF;
435 tb
->hi_n_len
= cpu_to_le16(hi_n_len
);
437 tfd
->num_tbs
= idx
+ 1;
440 static inline u8
iwl_tfd_get_num_tbs(struct iwl_tfd
*tfd
)
442 return tfd
->num_tbs
& 0x1f;
446 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
447 * @priv - driver private data
450 * Does NOT advance any TFD circular buffer read/write indexes
451 * Does NOT free the TFD itself (which is within circular buffer)
453 void iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
455 struct iwl_tfd
*tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
457 struct pci_dev
*dev
= priv
->pci_dev
;
458 int index
= txq
->q
.read_ptr
;
462 tfd
= &tfd_tmp
[index
];
464 /* Sanity check on number of chunks */
465 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
467 if (num_tbs
>= IWL_NUM_OF_TBS
) {
468 IWL_ERR(priv
, "Too many chunks: %i\n", num_tbs
);
469 /* @todo issue fatal error, it is quite serious situation */
475 pci_unmap_single(dev
,
476 pci_unmap_addr(&txq
->meta
[index
], mapping
),
477 pci_unmap_len(&txq
->meta
[index
], len
),
478 PCI_DMA_BIDIRECTIONAL
);
480 /* Unmap chunks, if any. */
481 for (i
= 1; i
< num_tbs
; i
++) {
482 pci_unmap_single(dev
, iwl_tfd_tb_get_addr(tfd
, i
),
483 iwl_tfd_tb_get_len(tfd
, i
), PCI_DMA_TODEVICE
);
486 dev_kfree_skb(txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1]);
487 txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1] = NULL
;
492 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
493 struct iwl_tx_queue
*txq
,
494 dma_addr_t addr
, u16 len
,
498 struct iwl_tfd
*tfd
, *tfd_tmp
;
502 tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
503 tfd
= &tfd_tmp
[q
->write_ptr
];
506 memset(tfd
, 0, sizeof(*tfd
));
508 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
510 /* Each TFD can point to a maximum 20 Tx buffers */
511 if (num_tbs
>= IWL_NUM_OF_TBS
) {
512 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
517 BUG_ON(addr
& ~DMA_BIT_MASK(36));
518 if (unlikely(addr
& ~IWL_TX_DMA_MASK
))
519 IWL_ERR(priv
, "Unaligned address = %llx\n",
520 (unsigned long long)addr
);
522 iwl_tfd_set_tb(tfd
, num_tbs
, addr
, len
);
528 * Tell nic where to find circular buffer of Tx Frame Descriptors for
529 * given Tx queue, and enable the DMA channel used for that queue.
531 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
532 * channels supported in hardware.
534 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
,
535 struct iwl_tx_queue
*txq
)
537 int txq_id
= txq
->q
.id
;
539 /* Circular buffer (TFD queue in DRAM) physical base address */
540 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
541 txq
->q
.dma_addr
>> 8);
546 /******************************************************************************
548 * Generic RX handler implementations
550 ******************************************************************************/
551 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
552 struct iwl_rx_mem_buffer
*rxb
)
554 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
555 struct iwl_alive_resp
*palive
;
556 struct delayed_work
*pwork
;
558 palive
= &pkt
->u
.alive_frame
;
560 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
562 palive
->is_valid
, palive
->ver_type
,
563 palive
->ver_subtype
);
565 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
566 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
567 memcpy(&priv
->card_alive_init
,
569 sizeof(struct iwl_init_alive_resp
));
570 pwork
= &priv
->init_alive_start
;
572 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
573 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
574 sizeof(struct iwl_alive_resp
));
575 pwork
= &priv
->alive_start
;
578 /* We delay the ALIVE response by 5ms to
579 * give the HW RF Kill time to activate... */
580 if (palive
->is_valid
== UCODE_VALID_OK
)
581 queue_delayed_work(priv
->workqueue
, pwork
,
582 msecs_to_jiffies(5));
584 IWL_WARN(priv
, "uCode did not respond OK.\n");
587 static void iwl_bg_beacon_update(struct work_struct
*work
)
589 struct iwl_priv
*priv
=
590 container_of(work
, struct iwl_priv
, beacon_update
);
591 struct sk_buff
*beacon
;
593 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
594 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
597 IWL_ERR(priv
, "update beacon failed\n");
601 mutex_lock(&priv
->mutex
);
602 /* new beacon skb is allocated every time; dispose previous.*/
603 if (priv
->ibss_beacon
)
604 dev_kfree_skb(priv
->ibss_beacon
);
606 priv
->ibss_beacon
= beacon
;
607 mutex_unlock(&priv
->mutex
);
609 iwl_send_beacon_cmd(priv
);
613 * iwl_bg_statistics_periodic - Timer callback to queue statistics
615 * This callback is provided in order to send a statistics request.
617 * This timer function is continually reset to execute within
618 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
619 * was received. We need to ensure we receive the statistics in order
620 * to update the temperature used for calibrating the TXPOWER.
622 static void iwl_bg_statistics_periodic(unsigned long data
)
624 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
626 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
629 /* dont send host command if rf-kill is on */
630 if (!iwl_is_ready_rf(priv
))
633 iwl_send_statistics_request(priv
, CMD_ASYNC
, false);
637 static void iwl_print_cont_event_trace(struct iwl_priv
*priv
, u32 base
,
638 u32 start_idx
, u32 num_events
,
642 u32 ptr
; /* SRAM byte address of log data */
643 u32 ev
, time
, data
; /* event log data */
644 unsigned long reg_flags
;
647 ptr
= base
+ (4 * sizeof(u32
)) + (start_idx
* 2 * sizeof(u32
));
649 ptr
= base
+ (4 * sizeof(u32
)) + (start_idx
* 3 * sizeof(u32
));
651 /* Make sure device is powered up for SRAM reads */
652 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
653 if (iwl_grab_nic_access(priv
)) {
654 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
658 /* Set starting address; reads will auto-increment */
659 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
663 * "time" is actually "data" for mode 0 (no timestamp).
664 * place event id # at far right for easier visual parsing.
666 for (i
= 0; i
< num_events
; i
++) {
667 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
668 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
670 trace_iwlwifi_dev_ucode_cont_event(priv
,
673 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
674 trace_iwlwifi_dev_ucode_cont_event(priv
,
678 /* Allow device to power down */
679 iwl_release_nic_access(priv
);
680 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
683 static void iwl_continuous_event_trace(struct iwl_priv
*priv
)
685 u32 capacity
; /* event log capacity in # entries */
686 u32 base
; /* SRAM byte address of event log header */
687 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
688 u32 num_wraps
; /* # times uCode wrapped to top of log */
689 u32 next_entry
; /* index of next entry to be written by uCode */
691 if (priv
->ucode_type
== UCODE_INIT
)
692 base
= le32_to_cpu(priv
->card_alive_init
.error_event_table_ptr
);
694 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
695 if (priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
696 capacity
= iwl_read_targ_mem(priv
, base
);
697 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
698 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
699 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
703 if (num_wraps
== priv
->event_log
.num_wraps
) {
704 iwl_print_cont_event_trace(priv
,
705 base
, priv
->event_log
.next_entry
,
706 next_entry
- priv
->event_log
.next_entry
,
708 priv
->event_log
.non_wraps_count
++;
710 if ((num_wraps
- priv
->event_log
.num_wraps
) > 1)
711 priv
->event_log
.wraps_more_count
++;
713 priv
->event_log
.wraps_once_count
++;
714 trace_iwlwifi_dev_ucode_wrap_event(priv
,
715 num_wraps
- priv
->event_log
.num_wraps
,
716 next_entry
, priv
->event_log
.next_entry
);
717 if (next_entry
< priv
->event_log
.next_entry
) {
718 iwl_print_cont_event_trace(priv
, base
,
719 priv
->event_log
.next_entry
,
720 capacity
- priv
->event_log
.next_entry
,
723 iwl_print_cont_event_trace(priv
, base
, 0,
726 iwl_print_cont_event_trace(priv
, base
,
727 next_entry
, capacity
- next_entry
,
730 iwl_print_cont_event_trace(priv
, base
, 0,
734 priv
->event_log
.num_wraps
= num_wraps
;
735 priv
->event_log
.next_entry
= next_entry
;
739 * iwl_bg_ucode_trace - Timer callback to log ucode event
741 * The timer is continually set to execute every
742 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
743 * this function is to perform continuous uCode event logging operation
746 static void iwl_bg_ucode_trace(unsigned long data
)
748 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
750 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
753 if (priv
->event_log
.ucode_trace
) {
754 iwl_continuous_event_trace(priv
);
755 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
756 mod_timer(&priv
->ucode_trace
,
757 jiffies
+ msecs_to_jiffies(UCODE_TRACE_PERIOD
));
761 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
762 struct iwl_rx_mem_buffer
*rxb
)
764 #ifdef CONFIG_IWLWIFI_DEBUG
765 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
766 struct iwl4965_beacon_notif
*beacon
=
767 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
768 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
770 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
771 "tsf %d %d rate %d\n",
772 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
773 beacon
->beacon_notify_hdr
.failure_frame
,
774 le32_to_cpu(beacon
->ibss_mgr_status
),
775 le32_to_cpu(beacon
->high_tsf
),
776 le32_to_cpu(beacon
->low_tsf
), rate
);
779 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
780 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
781 queue_work(priv
->workqueue
, &priv
->beacon_update
);
784 /* Handle notification from uCode that card's power state is changing
785 * due to software, hardware, or critical temperature RFKILL */
786 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
787 struct iwl_rx_mem_buffer
*rxb
)
789 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
790 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
791 unsigned long status
= priv
->status
;
793 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s CT:%s\n",
794 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
795 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On",
796 (flags
& CT_CARD_DISABLED
) ?
797 "Reached" : "Not reached");
799 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
802 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
803 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
805 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
806 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
808 if (!(flags
& RXON_CARD_DISABLED
)) {
809 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
810 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
811 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
812 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
814 if (flags
& CT_CARD_DISABLED
)
815 iwl_tt_enter_ct_kill(priv
);
817 if (!(flags
& CT_CARD_DISABLED
))
818 iwl_tt_exit_ct_kill(priv
);
820 if (flags
& HW_CARD_DISABLED
)
821 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
823 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
826 if (!(flags
& RXON_CARD_DISABLED
))
827 iwl_scan_cancel(priv
);
829 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
830 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
831 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
832 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
834 wake_up_interruptible(&priv
->wait_command_queue
);
837 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
839 if (src
== IWL_PWR_SRC_VAUX
) {
840 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
841 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
842 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
843 ~APMG_PS_CTRL_MSK_PWR_SRC
);
845 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
846 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
847 ~APMG_PS_CTRL_MSK_PWR_SRC
);
854 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
856 * Setup the RX handlers for each of the reply types sent from the uCode
859 * This function chains into the hardware specific files for them to setup
860 * any hardware specific handlers as well.
862 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
864 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
865 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
866 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
867 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
868 iwl_rx_spectrum_measure_notif
;
869 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
870 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
871 iwl_rx_pm_debug_statistics_notif
;
872 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
875 * The same handler is used for both the REPLY to a discrete
876 * statistics request from the host as well as for the periodic
877 * statistics notifications (after received beacons) from the uCode.
879 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_reply_statistics
;
880 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
882 iwl_setup_rx_scan_handlers(priv
);
884 /* status change handler */
885 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
887 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
888 iwl_rx_missed_beacon_notif
;
890 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwlagn_rx_reply_rx_phy
;
891 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwlagn_rx_reply_rx
;
893 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwlagn_rx_reply_compressed_ba
;
894 /* Set up hardware specific Rx handlers */
895 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
899 * iwl_rx_handle - Main entry function for receiving responses from uCode
901 * Uses the priv->rx_handlers callback function array to invoke
902 * the appropriate handlers, including command responses,
903 * frame-received notifications, and other notifications.
905 void iwl_rx_handle(struct iwl_priv
*priv
)
907 struct iwl_rx_mem_buffer
*rxb
;
908 struct iwl_rx_packet
*pkt
;
909 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
917 /* uCode's read index (stored in shared DRAM) indicates the last Rx
918 * buffer that the driver may process (last buffer filled by ucode). */
919 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
922 /* Rx interrupt, but nothing sent from uCode */
924 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
926 /* calculate total frames need to be restock after handling RX */
927 total_empty
= r
- rxq
->write_actual
;
929 total_empty
+= RX_QUEUE_SIZE
;
931 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
937 /* If an RXB doesn't have a Rx queue slot associated with it,
938 * then a bug has been introduced in the queue refilling
939 * routines -- catch it here */
942 rxq
->queue
[i
] = NULL
;
944 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
945 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
949 trace_iwlwifi_dev_rx(priv
, pkt
,
950 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
952 /* Reclaim a command buffer only if this packet is a response
953 * to a (driver-originated) command.
954 * If the packet (e.g. Rx frame) originated from uCode,
955 * there is no command buffer to reclaim.
956 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
957 * but apparently a few don't get set; catch them here. */
958 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
959 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
960 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
961 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
962 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
963 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
964 (pkt
->hdr
.cmd
!= REPLY_TX
);
966 /* Based on type of command response or notification,
967 * handle those that need handling via function in
968 * rx_handlers table. See iwl_setup_rx_handlers() */
969 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
970 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
971 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
972 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
973 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
975 /* No handling needed */
977 "r %d i %d No handler needed for %s, 0x%02x\n",
978 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
983 * XXX: After here, we should always check rxb->page
984 * against NULL before touching it or its virtual
985 * memory (pkt). Because some rx_handler might have
986 * already taken or freed the pages.
990 /* Invoke any callbacks, transfer the buffer to caller,
991 * and fire off the (possibly) blocking iwl_send_cmd()
992 * as we reclaim the driver command queue */
994 iwl_tx_cmd_complete(priv
, rxb
);
996 IWL_WARN(priv
, "Claim null rxb?\n");
999 /* Reuse the page if possible. For notification packets and
1000 * SKBs that fail to Rx correctly, add them back into the
1001 * rx_free list for reuse later. */
1002 spin_lock_irqsave(&rxq
->lock
, flags
);
1003 if (rxb
->page
!= NULL
) {
1004 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1005 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1006 PCI_DMA_FROMDEVICE
);
1007 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1010 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1012 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1014 i
= (i
+ 1) & RX_QUEUE_MASK
;
1015 /* If there are a lot of unused frames,
1016 * restock the Rx queue so ucode wont assert. */
1021 iwlagn_rx_replenish_now(priv
);
1027 /* Backtrack one entry */
1030 iwlagn_rx_replenish_now(priv
);
1032 iwlagn_rx_queue_restock(priv
);
1035 /* call this function to flush any scheduled tasklet */
1036 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1038 /* wait to make sure we flush pending tasklet*/
1039 synchronize_irq(priv
->pci_dev
->irq
);
1040 tasklet_kill(&priv
->irq_tasklet
);
1043 static void iwl_irq_tasklet_legacy(struct iwl_priv
*priv
)
1045 u32 inta
, handled
= 0;
1047 unsigned long flags
;
1049 #ifdef CONFIG_IWLWIFI_DEBUG
1053 spin_lock_irqsave(&priv
->lock
, flags
);
1055 /* Ack/clear/reset pending uCode interrupts.
1056 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1057 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1058 inta
= iwl_read32(priv
, CSR_INT
);
1059 iwl_write32(priv
, CSR_INT
, inta
);
1061 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1062 * Any new interrupts that happen after this, either while we're
1063 * in this tasklet, or later, will show up in next ISR/tasklet. */
1064 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1065 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1067 #ifdef CONFIG_IWLWIFI_DEBUG
1068 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1069 /* just for debug */
1070 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1071 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1072 inta
, inta_mask
, inta_fh
);
1076 spin_unlock_irqrestore(&priv
->lock
, flags
);
1078 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1079 * atomic, make sure that inta covers all the interrupts that
1080 * we've discovered, even if FH interrupt came in just after
1081 * reading CSR_INT. */
1082 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1083 inta
|= CSR_INT_BIT_FH_RX
;
1084 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1085 inta
|= CSR_INT_BIT_FH_TX
;
1087 /* Now service all interrupt bits discovered above. */
1088 if (inta
& CSR_INT_BIT_HW_ERR
) {
1089 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1091 /* Tell the device to stop sending interrupts */
1092 iwl_disable_interrupts(priv
);
1094 priv
->isr_stats
.hw
++;
1095 iwl_irq_handle_error(priv
);
1097 handled
|= CSR_INT_BIT_HW_ERR
;
1102 #ifdef CONFIG_IWLWIFI_DEBUG
1103 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1104 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1105 if (inta
& CSR_INT_BIT_SCD
) {
1106 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1107 "the frame/frames.\n");
1108 priv
->isr_stats
.sch
++;
1111 /* Alive notification via Rx interrupt will do the real work */
1112 if (inta
& CSR_INT_BIT_ALIVE
) {
1113 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1114 priv
->isr_stats
.alive
++;
1118 /* Safely ignore these bits for debug checks below */
1119 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1121 /* HW RF KILL switch toggled */
1122 if (inta
& CSR_INT_BIT_RF_KILL
) {
1124 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1125 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1128 IWL_WARN(priv
, "RF_KILL bit toggled to %s.\n",
1129 hw_rf_kill
? "disable radio" : "enable radio");
1131 priv
->isr_stats
.rfkill
++;
1133 /* driver only loads ucode once setting the interface up.
1134 * the driver allows loading the ucode even if the radio
1135 * is killed. Hence update the killswitch state here. The
1136 * rfkill handler will care about restarting if needed.
1138 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1140 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1142 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1143 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1146 handled
|= CSR_INT_BIT_RF_KILL
;
1149 /* Chip got too hot and stopped itself */
1150 if (inta
& CSR_INT_BIT_CT_KILL
) {
1151 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1152 priv
->isr_stats
.ctkill
++;
1153 handled
|= CSR_INT_BIT_CT_KILL
;
1156 /* Error detected by uCode */
1157 if (inta
& CSR_INT_BIT_SW_ERR
) {
1158 IWL_ERR(priv
, "Microcode SW error detected. "
1159 " Restarting 0x%X.\n", inta
);
1160 priv
->isr_stats
.sw
++;
1161 priv
->isr_stats
.sw_err
= inta
;
1162 iwl_irq_handle_error(priv
);
1163 handled
|= CSR_INT_BIT_SW_ERR
;
1167 * uCode wakes up after power-down sleep.
1168 * Tell device about any new tx or host commands enqueued,
1169 * and about any Rx buffers made available while asleep.
1171 if (inta
& CSR_INT_BIT_WAKEUP
) {
1172 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1173 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1174 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++)
1175 iwl_txq_update_write_ptr(priv
, &priv
->txq
[i
]);
1176 priv
->isr_stats
.wakeup
++;
1177 handled
|= CSR_INT_BIT_WAKEUP
;
1180 /* All uCode command responses, including Tx command responses,
1181 * Rx "responses" (frame-received notification), and other
1182 * notifications from uCode come through here*/
1183 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1184 iwl_rx_handle(priv
);
1185 priv
->isr_stats
.rx
++;
1186 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1189 /* This "Tx" DMA channel is used only for loading uCode */
1190 if (inta
& CSR_INT_BIT_FH_TX
) {
1191 IWL_DEBUG_ISR(priv
, "uCode load interrupt\n");
1192 priv
->isr_stats
.tx
++;
1193 handled
|= CSR_INT_BIT_FH_TX
;
1194 /* Wake up uCode load routine, now that load is complete */
1195 priv
->ucode_write_complete
= 1;
1196 wake_up_interruptible(&priv
->wait_command_queue
);
1199 if (inta
& ~handled
) {
1200 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1201 priv
->isr_stats
.unhandled
++;
1204 if (inta
& ~(priv
->inta_mask
)) {
1205 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1206 inta
& ~priv
->inta_mask
);
1207 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1210 /* Re-enable all interrupts */
1211 /* only Re-enable if diabled by irq */
1212 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1213 iwl_enable_interrupts(priv
);
1215 #ifdef CONFIG_IWLWIFI_DEBUG
1216 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1217 inta
= iwl_read32(priv
, CSR_INT
);
1218 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1219 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1220 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1221 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1226 /* tasklet for iwlagn interrupt */
1227 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1231 unsigned long flags
;
1233 #ifdef CONFIG_IWLWIFI_DEBUG
1237 spin_lock_irqsave(&priv
->lock
, flags
);
1239 /* Ack/clear/reset pending uCode interrupts.
1240 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1242 /* There is a hardware bug in the interrupt mask function that some
1243 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1244 * they are disabled in the CSR_INT_MASK register. Furthermore the
1245 * ICT interrupt handling mechanism has another bug that might cause
1246 * these unmasked interrupts fail to be detected. We workaround the
1247 * hardware bugs here by ACKing all the possible interrupts so that
1248 * interrupt coalescing can still be achieved.
1250 iwl_write32(priv
, CSR_INT
, priv
->_agn
.inta
| ~priv
->inta_mask
);
1252 inta
= priv
->_agn
.inta
;
1254 #ifdef CONFIG_IWLWIFI_DEBUG
1255 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1256 /* just for debug */
1257 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1258 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x\n ",
1263 spin_unlock_irqrestore(&priv
->lock
, flags
);
1265 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1266 priv
->_agn
.inta
= 0;
1268 /* Now service all interrupt bits discovered above. */
1269 if (inta
& CSR_INT_BIT_HW_ERR
) {
1270 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1272 /* Tell the device to stop sending interrupts */
1273 iwl_disable_interrupts(priv
);
1275 priv
->isr_stats
.hw
++;
1276 iwl_irq_handle_error(priv
);
1278 handled
|= CSR_INT_BIT_HW_ERR
;
1283 #ifdef CONFIG_IWLWIFI_DEBUG
1284 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1285 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1286 if (inta
& CSR_INT_BIT_SCD
) {
1287 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1288 "the frame/frames.\n");
1289 priv
->isr_stats
.sch
++;
1292 /* Alive notification via Rx interrupt will do the real work */
1293 if (inta
& CSR_INT_BIT_ALIVE
) {
1294 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1295 priv
->isr_stats
.alive
++;
1299 /* Safely ignore these bits for debug checks below */
1300 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1302 /* HW RF KILL switch toggled */
1303 if (inta
& CSR_INT_BIT_RF_KILL
) {
1305 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1306 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1309 IWL_WARN(priv
, "RF_KILL bit toggled to %s.\n",
1310 hw_rf_kill
? "disable radio" : "enable radio");
1312 priv
->isr_stats
.rfkill
++;
1314 /* driver only loads ucode once setting the interface up.
1315 * the driver allows loading the ucode even if the radio
1316 * is killed. Hence update the killswitch state here. The
1317 * rfkill handler will care about restarting if needed.
1319 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1321 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1323 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1324 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1327 handled
|= CSR_INT_BIT_RF_KILL
;
1330 /* Chip got too hot and stopped itself */
1331 if (inta
& CSR_INT_BIT_CT_KILL
) {
1332 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1333 priv
->isr_stats
.ctkill
++;
1334 handled
|= CSR_INT_BIT_CT_KILL
;
1337 /* Error detected by uCode */
1338 if (inta
& CSR_INT_BIT_SW_ERR
) {
1339 IWL_ERR(priv
, "Microcode SW error detected. "
1340 " Restarting 0x%X.\n", inta
);
1341 priv
->isr_stats
.sw
++;
1342 priv
->isr_stats
.sw_err
= inta
;
1343 iwl_irq_handle_error(priv
);
1344 handled
|= CSR_INT_BIT_SW_ERR
;
1347 /* uCode wakes up after power-down sleep */
1348 if (inta
& CSR_INT_BIT_WAKEUP
) {
1349 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1350 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1351 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++)
1352 iwl_txq_update_write_ptr(priv
, &priv
->txq
[i
]);
1354 priv
->isr_stats
.wakeup
++;
1356 handled
|= CSR_INT_BIT_WAKEUP
;
1359 /* All uCode command responses, including Tx command responses,
1360 * Rx "responses" (frame-received notification), and other
1361 * notifications from uCode come through here*/
1362 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
|
1363 CSR_INT_BIT_RX_PERIODIC
)) {
1364 IWL_DEBUG_ISR(priv
, "Rx interrupt\n");
1365 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1366 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1367 iwl_write32(priv
, CSR_FH_INT_STATUS
,
1368 CSR49_FH_INT_RX_MASK
);
1370 if (inta
& CSR_INT_BIT_RX_PERIODIC
) {
1371 handled
|= CSR_INT_BIT_RX_PERIODIC
;
1372 iwl_write32(priv
, CSR_INT
, CSR_INT_BIT_RX_PERIODIC
);
1374 /* Sending RX interrupt require many steps to be done in the
1376 * 1- write interrupt to current index in ICT table.
1378 * 3- update RX shared data to indicate last write index.
1379 * 4- send interrupt.
1380 * This could lead to RX race, driver could receive RX interrupt
1381 * but the shared data changes does not reflect this;
1382 * periodic interrupt will detect any dangling Rx activity.
1385 /* Disable periodic interrupt; we use it as just a one-shot. */
1386 iwl_write8(priv
, CSR_INT_PERIODIC_REG
,
1387 CSR_INT_PERIODIC_DIS
);
1388 iwl_rx_handle(priv
);
1391 * Enable periodic interrupt in 8 msec only if we received
1392 * real RX interrupt (instead of just periodic int), to catch
1393 * any dangling Rx interrupt. If it was just the periodic
1394 * interrupt, there was no dangling Rx activity, and no need
1395 * to extend the periodic interrupt; one-shot is enough.
1397 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
))
1398 iwl_write8(priv
, CSR_INT_PERIODIC_REG
,
1399 CSR_INT_PERIODIC_ENA
);
1401 priv
->isr_stats
.rx
++;
1404 /* This "Tx" DMA channel is used only for loading uCode */
1405 if (inta
& CSR_INT_BIT_FH_TX
) {
1406 iwl_write32(priv
, CSR_FH_INT_STATUS
, CSR49_FH_INT_TX_MASK
);
1407 IWL_DEBUG_ISR(priv
, "uCode load interrupt\n");
1408 priv
->isr_stats
.tx
++;
1409 handled
|= CSR_INT_BIT_FH_TX
;
1410 /* Wake up uCode load routine, now that load is complete */
1411 priv
->ucode_write_complete
= 1;
1412 wake_up_interruptible(&priv
->wait_command_queue
);
1415 if (inta
& ~handled
) {
1416 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1417 priv
->isr_stats
.unhandled
++;
1420 if (inta
& ~(priv
->inta_mask
)) {
1421 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1422 inta
& ~priv
->inta_mask
);
1425 /* Re-enable all interrupts */
1426 /* only Re-enable if diabled by irq */
1427 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1428 iwl_enable_interrupts(priv
);
1431 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1432 #define ACK_CNT_RATIO (50)
1433 #define BA_TIMEOUT_CNT (5)
1434 #define BA_TIMEOUT_MAX (16)
1437 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1439 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1440 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1443 bool iwl_good_ack_health(struct iwl_priv
*priv
,
1444 struct iwl_rx_packet
*pkt
)
1447 int actual_ack_cnt_delta
, expected_ack_cnt_delta
;
1448 int ba_timeout_delta
;
1450 actual_ack_cnt_delta
=
1451 le32_to_cpu(pkt
->u
.stats
.tx
.actual_ack_cnt
) -
1452 le32_to_cpu(priv
->_agn
.statistics
.tx
.actual_ack_cnt
);
1453 expected_ack_cnt_delta
=
1454 le32_to_cpu(pkt
->u
.stats
.tx
.expected_ack_cnt
) -
1455 le32_to_cpu(priv
->_agn
.statistics
.tx
.expected_ack_cnt
);
1457 le32_to_cpu(pkt
->u
.stats
.tx
.agg
.ba_timeout
) -
1458 le32_to_cpu(priv
->_agn
.statistics
.tx
.agg
.ba_timeout
);
1459 if ((priv
->_agn
.agg_tids_count
> 0) &&
1460 (expected_ack_cnt_delta
> 0) &&
1461 (((actual_ack_cnt_delta
* 100) / expected_ack_cnt_delta
)
1463 (ba_timeout_delta
> BA_TIMEOUT_CNT
)) {
1464 IWL_DEBUG_RADIO(priv
, "actual_ack_cnt delta = %d,"
1465 " expected_ack_cnt = %d\n",
1466 actual_ack_cnt_delta
, expected_ack_cnt_delta
);
1468 #ifdef CONFIG_IWLWIFI_DEBUG
1469 IWL_DEBUG_RADIO(priv
, "rx_detected_cnt delta = %d\n",
1470 priv
->_agn
.delta_statistics
.tx
.rx_detected_cnt
);
1471 IWL_DEBUG_RADIO(priv
,
1472 "ack_or_ba_timeout_collision delta = %d\n",
1473 priv
->_agn
.delta_statistics
.tx
.
1474 ack_or_ba_timeout_collision
);
1476 IWL_DEBUG_RADIO(priv
, "agg ba_timeout delta = %d\n",
1478 if (!actual_ack_cnt_delta
&&
1479 (ba_timeout_delta
>= BA_TIMEOUT_MAX
))
1486 /******************************************************************************
1488 * uCode download functions
1490 ******************************************************************************/
1492 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1494 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1495 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1496 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1497 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1498 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1499 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1502 static void iwl_nic_start(struct iwl_priv
*priv
)
1504 /* Remove all resets to allow NIC to operate */
1505 iwl_write32(priv
, CSR_RESET
, 0);
1508 struct iwlagn_ucode_capabilities
{
1509 u32 max_probe_length
;
1512 static void iwl_ucode_callback(const struct firmware
*ucode_raw
, void *context
);
1513 static int iwl_mac_setup_register(struct iwl_priv
*priv
,
1514 struct iwlagn_ucode_capabilities
*capa
);
1516 static int __must_check
iwl_request_firmware(struct iwl_priv
*priv
, bool first
)
1518 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1521 priv
->fw_index
= priv
->cfg
->ucode_api_max
;
1525 if (priv
->fw_index
< priv
->cfg
->ucode_api_min
) {
1526 IWL_ERR(priv
, "no suitable firmware found!\n");
1530 sprintf(priv
->firmware_name
, "%s%d%s",
1531 name_pre
, priv
->fw_index
, ".ucode");
1533 IWL_DEBUG_INFO(priv
, "attempting to load firmware '%s'\n",
1534 priv
->firmware_name
);
1536 return request_firmware_nowait(THIS_MODULE
, 1, priv
->firmware_name
,
1537 &priv
->pci_dev
->dev
, GFP_KERNEL
, priv
,
1538 iwl_ucode_callback
);
1541 struct iwlagn_firmware_pieces
{
1542 const void *inst
, *data
, *init
, *init_data
, *boot
;
1543 size_t inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1548 static int iwlagn_load_legacy_firmware(struct iwl_priv
*priv
,
1549 const struct firmware
*ucode_raw
,
1550 struct iwlagn_firmware_pieces
*pieces
)
1552 struct iwl_ucode_header
*ucode
= (void *)ucode_raw
->data
;
1553 u32 api_ver
, hdr_size
;
1556 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1557 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1562 * 4965 doesn't revision the firmware file format
1563 * along with the API version, it always uses v1
1566 if ((priv
->hw_rev
& CSR_HW_REV_TYPE_MSK
) !=
1567 CSR_HW_REV_TYPE_4965
) {
1569 if (ucode_raw
->size
< hdr_size
) {
1570 IWL_ERR(priv
, "File size too small!\n");
1573 pieces
->build
= le32_to_cpu(ucode
->u
.v2
.build
);
1574 pieces
->inst_size
= le32_to_cpu(ucode
->u
.v2
.inst_size
);
1575 pieces
->data_size
= le32_to_cpu(ucode
->u
.v2
.data_size
);
1576 pieces
->init_size
= le32_to_cpu(ucode
->u
.v2
.init_size
);
1577 pieces
->init_data_size
= le32_to_cpu(ucode
->u
.v2
.init_data_size
);
1578 pieces
->boot_size
= le32_to_cpu(ucode
->u
.v2
.boot_size
);
1579 src
= ucode
->u
.v2
.data
;
1582 /* fall through for 4965 */
1587 if (ucode_raw
->size
< hdr_size
) {
1588 IWL_ERR(priv
, "File size too small!\n");
1592 pieces
->inst_size
= le32_to_cpu(ucode
->u
.v1
.inst_size
);
1593 pieces
->data_size
= le32_to_cpu(ucode
->u
.v1
.data_size
);
1594 pieces
->init_size
= le32_to_cpu(ucode
->u
.v1
.init_size
);
1595 pieces
->init_data_size
= le32_to_cpu(ucode
->u
.v1
.init_data_size
);
1596 pieces
->boot_size
= le32_to_cpu(ucode
->u
.v1
.boot_size
);
1597 src
= ucode
->u
.v1
.data
;
1601 /* Verify size of file vs. image size info in file's header */
1602 if (ucode_raw
->size
!= hdr_size
+ pieces
->inst_size
+
1603 pieces
->data_size
+ pieces
->init_size
+
1604 pieces
->init_data_size
+ pieces
->boot_size
) {
1607 "uCode file size %d does not match expected size\n",
1608 (int)ucode_raw
->size
);
1613 src
+= pieces
->inst_size
;
1615 src
+= pieces
->data_size
;
1617 src
+= pieces
->init_size
;
1618 pieces
->init_data
= src
;
1619 src
+= pieces
->init_data_size
;
1621 src
+= pieces
->boot_size
;
1626 static int iwlagn_wanted_ucode_alternative
= 1;
1628 static int iwlagn_load_firmware(struct iwl_priv
*priv
,
1629 const struct firmware
*ucode_raw
,
1630 struct iwlagn_firmware_pieces
*pieces
,
1631 struct iwlagn_ucode_capabilities
*capa
)
1633 struct iwl_tlv_ucode_header
*ucode
= (void *)ucode_raw
->data
;
1634 struct iwl_ucode_tlv
*tlv
;
1635 size_t len
= ucode_raw
->size
;
1637 int wanted_alternative
= iwlagn_wanted_ucode_alternative
, tmp
;
1640 if (len
< sizeof(*ucode
))
1643 if (ucode
->magic
!= cpu_to_le32(IWL_TLV_UCODE_MAGIC
))
1647 * Check which alternatives are present, and "downgrade"
1648 * when the chosen alternative is not present, warning
1649 * the user when that happens. Some files may not have
1650 * any alternatives, so don't warn in that case.
1652 alternatives
= le64_to_cpu(ucode
->alternatives
);
1653 tmp
= wanted_alternative
;
1654 if (wanted_alternative
> 63)
1655 wanted_alternative
= 63;
1656 while (wanted_alternative
&& !(alternatives
& BIT(wanted_alternative
)))
1657 wanted_alternative
--;
1658 if (wanted_alternative
&& wanted_alternative
!= tmp
)
1660 "uCode alternative %d not available, choosing %d\n",
1661 tmp
, wanted_alternative
);
1663 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1664 pieces
->build
= le32_to_cpu(ucode
->build
);
1667 len
-= sizeof(*ucode
);
1669 while (len
>= sizeof(*tlv
)) {
1671 enum iwl_ucode_tlv_type tlv_type
;
1675 len
-= sizeof(*tlv
);
1678 tlv_len
= le32_to_cpu(tlv
->length
);
1679 tlv_type
= le16_to_cpu(tlv
->type
);
1680 tlv_alt
= le16_to_cpu(tlv
->alternative
);
1681 tlv_data
= tlv
->data
;
1685 len
-= ALIGN(tlv_len
, 4);
1686 data
+= sizeof(*tlv
) + ALIGN(tlv_len
, 4);
1689 * Alternative 0 is always valid.
1691 * Skip alternative TLVs that are not selected.
1693 if (tlv_alt
!= 0 && tlv_alt
!= wanted_alternative
)
1697 case IWL_UCODE_TLV_INST
:
1698 pieces
->inst
= tlv_data
;
1699 pieces
->inst_size
= tlv_len
;
1701 case IWL_UCODE_TLV_DATA
:
1702 pieces
->data
= tlv_data
;
1703 pieces
->data_size
= tlv_len
;
1705 case IWL_UCODE_TLV_INIT
:
1706 pieces
->init
= tlv_data
;
1707 pieces
->init_size
= tlv_len
;
1709 case IWL_UCODE_TLV_INIT_DATA
:
1710 pieces
->init_data
= tlv_data
;
1711 pieces
->init_data_size
= tlv_len
;
1713 case IWL_UCODE_TLV_BOOT
:
1714 pieces
->boot
= tlv_data
;
1715 pieces
->boot_size
= tlv_len
;
1717 case IWL_UCODE_TLV_PROBE_MAX_LEN
:
1720 capa
->max_probe_length
=
1721 le32_to_cpup((__le32
*)tlv_data
);
1735 * iwl_ucode_callback - callback when firmware was loaded
1737 * If loaded successfully, copies the firmware into buffers
1738 * for the card to fetch (via DMA).
1740 static void iwl_ucode_callback(const struct firmware
*ucode_raw
, void *context
)
1742 struct iwl_priv
*priv
= context
;
1743 struct iwl_ucode_header
*ucode
;
1745 struct iwlagn_firmware_pieces pieces
;
1746 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1747 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1751 struct iwlagn_ucode_capabilities ucode_capa
= {
1752 .max_probe_length
= 200,
1755 memset(&pieces
, 0, sizeof(pieces
));
1758 IWL_ERR(priv
, "request for firmware file '%s' failed.\n",
1759 priv
->firmware_name
);
1763 IWL_DEBUG_INFO(priv
, "Loaded firmware file '%s' (%zd bytes).\n",
1764 priv
->firmware_name
, ucode_raw
->size
);
1766 /* Make sure that we got at least the API version number */
1767 if (ucode_raw
->size
< 4) {
1768 IWL_ERR(priv
, "File size way too small!\n");
1772 /* Data from ucode file: header followed by uCode images */
1773 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
1776 err
= iwlagn_load_legacy_firmware(priv
, ucode_raw
, &pieces
);
1778 err
= iwlagn_load_firmware(priv
, ucode_raw
, &pieces
,
1784 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1785 build
= pieces
.build
;
1788 * api_ver should match the api version forming part of the
1789 * firmware filename ... but we don't check for that and only rely
1790 * on the API version read from firmware header from here on forward
1792 if (api_ver
< api_min
|| api_ver
> api_max
) {
1793 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1794 "Driver supports v%u, firmware is v%u.\n",
1799 if (api_ver
!= api_max
)
1800 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1801 "got v%u. New firmware can be obtained "
1802 "from http://www.intellinuxwireless.org.\n",
1806 sprintf(buildstr
, " build %u", build
);
1810 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u%s\n",
1811 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1812 IWL_UCODE_MINOR(priv
->ucode_ver
),
1813 IWL_UCODE_API(priv
->ucode_ver
),
1814 IWL_UCODE_SERIAL(priv
->ucode_ver
),
1817 snprintf(priv
->hw
->wiphy
->fw_version
,
1818 sizeof(priv
->hw
->wiphy
->fw_version
),
1820 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1821 IWL_UCODE_MINOR(priv
->ucode_ver
),
1822 IWL_UCODE_API(priv
->ucode_ver
),
1823 IWL_UCODE_SERIAL(priv
->ucode_ver
),
1827 * For any of the failures below (before allocating pci memory)
1828 * we will try to load a version with a smaller API -- maybe the
1829 * user just got a corrupted version of the latest API.
1832 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1834 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %Zd\n",
1836 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %Zd\n",
1838 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %Zd\n",
1840 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %Zd\n",
1841 pieces
.init_data_size
);
1842 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %Zd\n",
1845 /* Verify that uCode images will fit in card's SRAM */
1846 if (pieces
.inst_size
> priv
->hw_params
.max_inst_size
) {
1847 IWL_ERR(priv
, "uCode instr len %Zd too large to fit in\n",
1852 if (pieces
.data_size
> priv
->hw_params
.max_data_size
) {
1853 IWL_ERR(priv
, "uCode data len %Zd too large to fit in\n",
1858 if (pieces
.init_size
> priv
->hw_params
.max_inst_size
) {
1859 IWL_ERR(priv
, "uCode init instr len %Zd too large to fit in\n",
1864 if (pieces
.init_data_size
> priv
->hw_params
.max_data_size
) {
1865 IWL_ERR(priv
, "uCode init data len %Zd too large to fit in\n",
1866 pieces
.init_data_size
);
1870 if (pieces
.boot_size
> priv
->hw_params
.max_bsm_size
) {
1871 IWL_ERR(priv
, "uCode boot instr len %Zd too large to fit in\n",
1876 /* Allocate ucode buffers for card's bus-master loading ... */
1878 /* Runtime instructions and 2 copies of data:
1879 * 1) unmodified from disk
1880 * 2) backup cache for save/restore during power-downs */
1881 priv
->ucode_code
.len
= pieces
.inst_size
;
1882 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1884 priv
->ucode_data
.len
= pieces
.data_size
;
1885 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1887 priv
->ucode_data_backup
.len
= pieces
.data_size
;
1888 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1890 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1891 !priv
->ucode_data_backup
.v_addr
)
1894 /* Initialization instructions and data */
1895 if (pieces
.init_size
&& pieces
.init_data_size
) {
1896 priv
->ucode_init
.len
= pieces
.init_size
;
1897 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1899 priv
->ucode_init_data
.len
= pieces
.init_data_size
;
1900 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1902 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1906 /* Bootstrap (instructions only, no data) */
1907 if (pieces
.boot_size
) {
1908 priv
->ucode_boot
.len
= pieces
.boot_size
;
1909 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1911 if (!priv
->ucode_boot
.v_addr
)
1915 /* Copy images into buffers for card's bus-master reads ... */
1917 /* Runtime instructions (first block of data in file) */
1918 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n",
1920 memcpy(priv
->ucode_code
.v_addr
, pieces
.inst
, pieces
.inst_size
);
1922 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1923 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1927 * NOTE: Copy into backup buffer will be done in iwl_up()
1929 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n",
1931 memcpy(priv
->ucode_data
.v_addr
, pieces
.data
, pieces
.data_size
);
1932 memcpy(priv
->ucode_data_backup
.v_addr
, pieces
.data
, pieces
.data_size
);
1934 /* Initialization instructions */
1935 if (pieces
.init_size
) {
1936 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
1938 memcpy(priv
->ucode_init
.v_addr
, pieces
.init
, pieces
.init_size
);
1941 /* Initialization data */
1942 if (pieces
.init_data_size
) {
1943 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
1944 pieces
.init_data_size
);
1945 memcpy(priv
->ucode_init_data
.v_addr
, pieces
.init_data
,
1946 pieces
.init_data_size
);
1949 /* Bootstrap instructions */
1950 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n",
1952 memcpy(priv
->ucode_boot
.v_addr
, pieces
.boot
, pieces
.boot_size
);
1954 /**************************************************
1955 * This is still part of probe() in a sense...
1957 * 9. Setup and register with mac80211 and debugfs
1958 **************************************************/
1959 err
= iwl_mac_setup_register(priv
, &ucode_capa
);
1963 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
1965 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
1967 /* We have our copies now, allow OS release its copies */
1968 release_firmware(ucode_raw
);
1969 complete(&priv
->_agn
.firmware_loading_complete
);
1973 /* try next, if any */
1974 if (iwl_request_firmware(priv
, false))
1976 release_firmware(ucode_raw
);
1980 IWL_ERR(priv
, "failed to allocate pci memory\n");
1981 iwl_dealloc_ucode_pci(priv
);
1983 complete(&priv
->_agn
.firmware_loading_complete
);
1984 device_release_driver(&priv
->pci_dev
->dev
);
1985 release_firmware(ucode_raw
);
1988 static const char *desc_lookup_text
[] = {
1993 "NMI_INTERRUPT_WDG",
1997 "HW_ERROR_TUNE_LOCK",
1998 "HW_ERROR_TEMPERATURE",
1999 "ILLEGAL_CHAN_FREQ",
2002 "NMI_INTERRUPT_HOST",
2003 "NMI_INTERRUPT_ACTION_PT",
2004 "NMI_INTERRUPT_UNKNOWN",
2005 "UCODE_VERSION_MISMATCH",
2006 "HW_ERROR_ABS_LOCK",
2007 "HW_ERROR_CAL_LOCK_FAIL",
2008 "NMI_INTERRUPT_INST_ACTION_PT",
2009 "NMI_INTERRUPT_DATA_ACTION_PT",
2011 "NMI_INTERRUPT_TRM",
2012 "NMI_INTERRUPT_BREAK_POINT"
2017 "ADVANCED SYSASSERT"
2020 static const char *desc_lookup(int i
)
2022 int max
= ARRAY_SIZE(desc_lookup_text
) - 1;
2024 if (i
< 0 || i
> max
)
2027 return desc_lookup_text
[i
];
2030 #define ERROR_START_OFFSET (1 * sizeof(u32))
2031 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2033 void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
2036 u32 desc
, time
, count
, base
, data1
;
2037 u32 blink1
, blink2
, ilink1
, ilink2
;
2040 if (priv
->ucode_type
== UCODE_INIT
)
2041 base
= le32_to_cpu(priv
->card_alive_init
.error_event_table_ptr
);
2043 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
2045 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
2047 "Not valid error log pointer 0x%08X for %s uCode\n",
2048 base
, (priv
->ucode_type
== UCODE_INIT
) ? "Init" : "RT");
2052 count
= iwl_read_targ_mem(priv
, base
);
2054 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
2055 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
2056 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
2057 priv
->status
, count
);
2060 desc
= iwl_read_targ_mem(priv
, base
+ 1 * sizeof(u32
));
2061 pc
= iwl_read_targ_mem(priv
, base
+ 2 * sizeof(u32
));
2062 blink1
= iwl_read_targ_mem(priv
, base
+ 3 * sizeof(u32
));
2063 blink2
= iwl_read_targ_mem(priv
, base
+ 4 * sizeof(u32
));
2064 ilink1
= iwl_read_targ_mem(priv
, base
+ 5 * sizeof(u32
));
2065 ilink2
= iwl_read_targ_mem(priv
, base
+ 6 * sizeof(u32
));
2066 data1
= iwl_read_targ_mem(priv
, base
+ 7 * sizeof(u32
));
2067 data2
= iwl_read_targ_mem(priv
, base
+ 8 * sizeof(u32
));
2068 line
= iwl_read_targ_mem(priv
, base
+ 9 * sizeof(u32
));
2069 time
= iwl_read_targ_mem(priv
, base
+ 11 * sizeof(u32
));
2070 hcmd
= iwl_read_targ_mem(priv
, base
+ 22 * sizeof(u32
));
2072 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, data2
, line
,
2073 blink1
, blink2
, ilink1
, ilink2
);
2075 IWL_ERR(priv
, "Desc Time "
2076 "data1 data2 line\n");
2077 IWL_ERR(priv
, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
2078 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
2079 IWL_ERR(priv
, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2080 IWL_ERR(priv
, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2081 pc
, blink1
, blink2
, ilink1
, ilink2
, hcmd
);
2084 #define EVENT_START_OFFSET (4 * sizeof(u32))
2087 * iwl_print_event_log - Dump error event log to syslog
2090 static int iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
2091 u32 num_events
, u32 mode
,
2092 int pos
, char **buf
, size_t bufsz
)
2095 u32 base
; /* SRAM byte address of event log header */
2096 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
2097 u32 ptr
; /* SRAM byte address of log data */
2098 u32 ev
, time
, data
; /* event log data */
2099 unsigned long reg_flags
;
2101 if (num_events
== 0)
2103 if (priv
->ucode_type
== UCODE_INIT
)
2104 base
= le32_to_cpu(priv
->card_alive_init
.log_event_table_ptr
);
2106 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
2109 event_size
= 2 * sizeof(u32
);
2111 event_size
= 3 * sizeof(u32
);
2113 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
2115 /* Make sure device is powered up for SRAM reads */
2116 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
2117 iwl_grab_nic_access(priv
);
2119 /* Set starting address; reads will auto-increment */
2120 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
2123 /* "time" is actually "data" for mode 0 (no timestamp).
2124 * place event id # at far right for easier visual parsing. */
2125 for (i
= 0; i
< num_events
; i
++) {
2126 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2127 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2131 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2132 "EVT_LOG:0x%08x:%04u\n",
2135 trace_iwlwifi_dev_ucode_event(priv
, 0,
2137 IWL_ERR(priv
, "EVT_LOG:0x%08x:%04u\n",
2141 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2143 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2144 "EVT_LOGT:%010u:0x%08x:%04u\n",
2147 IWL_ERR(priv
, "EVT_LOGT:%010u:0x%08x:%04u\n",
2149 trace_iwlwifi_dev_ucode_event(priv
, time
,
2155 /* Allow device to power down */
2156 iwl_release_nic_access(priv
);
2157 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
2162 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2164 static int iwl_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
2165 u32 num_wraps
, u32 next_entry
,
2167 int pos
, char **buf
, size_t bufsz
)
2170 * display the newest DEFAULT_LOG_ENTRIES entries
2171 * i.e the entries just before the next ont that uCode would fill.
2174 if (next_entry
< size
) {
2175 pos
= iwl_print_event_log(priv
,
2176 capacity
- (size
- next_entry
),
2177 size
- next_entry
, mode
,
2179 pos
= iwl_print_event_log(priv
, 0,
2183 pos
= iwl_print_event_log(priv
, next_entry
- size
,
2184 size
, mode
, pos
, buf
, bufsz
);
2186 if (next_entry
< size
) {
2187 pos
= iwl_print_event_log(priv
, 0, next_entry
,
2188 mode
, pos
, buf
, bufsz
);
2190 pos
= iwl_print_event_log(priv
, next_entry
- size
,
2191 size
, mode
, pos
, buf
, bufsz
);
2197 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2199 int iwl_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
2200 char **buf
, bool display
)
2202 u32 base
; /* SRAM byte address of event log header */
2203 u32 capacity
; /* event log capacity in # entries */
2204 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
2205 u32 num_wraps
; /* # times uCode wrapped to top of log */
2206 u32 next_entry
; /* index of next entry to be written by uCode */
2207 u32 size
; /* # entries that we'll print */
2211 if (priv
->ucode_type
== UCODE_INIT
)
2212 base
= le32_to_cpu(priv
->card_alive_init
.log_event_table_ptr
);
2214 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
2216 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
2218 "Invalid event log pointer 0x%08X for %s uCode\n",
2219 base
, (priv
->ucode_type
== UCODE_INIT
) ? "Init" : "RT");
2223 /* event log header */
2224 capacity
= iwl_read_targ_mem(priv
, base
);
2225 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
2226 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
2227 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
2229 if (capacity
> priv
->cfg
->max_event_log_size
) {
2230 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
2231 capacity
, priv
->cfg
->max_event_log_size
);
2232 capacity
= priv
->cfg
->max_event_log_size
;
2235 if (next_entry
> priv
->cfg
->max_event_log_size
) {
2236 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
2237 next_entry
, priv
->cfg
->max_event_log_size
);
2238 next_entry
= priv
->cfg
->max_event_log_size
;
2241 size
= num_wraps
? capacity
: next_entry
;
2243 /* bail out if nothing in log */
2245 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
2249 #ifdef CONFIG_IWLWIFI_DEBUG
2250 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
2251 size
= (size
> DEFAULT_DUMP_EVENT_LOG_ENTRIES
)
2252 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES
: size
;
2254 size
= (size
> DEFAULT_DUMP_EVENT_LOG_ENTRIES
)
2255 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES
: size
;
2257 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %u entries\n",
2260 #ifdef CONFIG_IWLWIFI_DEBUG
2263 bufsz
= capacity
* 48;
2266 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
2270 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
2272 * if uCode has wrapped back to top of log,
2273 * start at the oldest entry,
2274 * i.e the next one that uCode would fill.
2277 pos
= iwl_print_event_log(priv
, next_entry
,
2278 capacity
- next_entry
, mode
,
2280 /* (then/else) start at top of log */
2281 pos
= iwl_print_event_log(priv
, 0,
2282 next_entry
, mode
, pos
, buf
, bufsz
);
2284 pos
= iwl_print_last_event_logs(priv
, capacity
, num_wraps
,
2285 next_entry
, size
, mode
,
2288 pos
= iwl_print_last_event_logs(priv
, capacity
, num_wraps
,
2289 next_entry
, size
, mode
,
2296 * iwl_alive_start - called after REPLY_ALIVE notification received
2297 * from protocol/runtime uCode (initialization uCode's
2298 * Alive gets handled by iwl_init_alive_start()).
2300 static void iwl_alive_start(struct iwl_priv
*priv
)
2304 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2306 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2307 /* We had an error bringing up the hardware, so take it
2308 * all the way back down so we can try again */
2309 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2313 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2314 * This is a paranoid check, because we would not have gotten the
2315 * "runtime" alive if code weren't properly loaded. */
2316 if (iwl_verify_ucode(priv
)) {
2317 /* Runtime instruction load was bad;
2318 * take it all the way back down so we can try again */
2319 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2323 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
2326 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
2330 /* After the ALIVE response, we can send host commands to the uCode */
2331 set_bit(STATUS_ALIVE
, &priv
->status
);
2333 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
2334 /* Enable timer to monitor the driver queues */
2335 mod_timer(&priv
->monitor_recover
,
2337 msecs_to_jiffies(priv
->cfg
->monitor_recover_period
));
2340 if (iwl_is_rfkill(priv
))
2343 ieee80211_wake_queues(priv
->hw
);
2345 priv
->active_rate
= IWL_RATES_MASK
;
2347 /* Configure Tx antenna selection based on H/W config */
2348 if (priv
->cfg
->ops
->hcmd
->set_tx_ant
)
2349 priv
->cfg
->ops
->hcmd
->set_tx_ant(priv
, priv
->cfg
->valid_tx_ant
);
2351 if (iwl_is_associated(priv
)) {
2352 struct iwl_rxon_cmd
*active_rxon
=
2353 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
2354 /* apply any changes in staging */
2355 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2356 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2358 /* Initialize our rx_config data */
2359 iwl_connection_init_rx_config(priv
, NULL
);
2361 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2362 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2364 memcpy(priv
->staging_rxon
.node_addr
, priv
->mac_addr
, ETH_ALEN
);
2367 /* Configure Bluetooth device coexistence support */
2368 priv
->cfg
->ops
->hcmd
->send_bt_config(priv
);
2370 iwl_reset_run_time_calib(priv
);
2372 /* Configure the adapter for unassociated operation */
2373 iwlcore_commit_rxon(priv
);
2375 /* At this point, the NIC is initialized and operational */
2376 iwl_rf_kill_ct_config(priv
);
2378 iwl_leds_init(priv
);
2380 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2381 set_bit(STATUS_READY
, &priv
->status
);
2382 wake_up_interruptible(&priv
->wait_command_queue
);
2384 iwl_power_update_mode(priv
, true);
2385 IWL_DEBUG_INFO(priv
, "Updated power mode\n");
2391 queue_work(priv
->workqueue
, &priv
->restart
);
2394 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
2396 static void __iwl_down(struct iwl_priv
*priv
)
2398 unsigned long flags
;
2399 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2401 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2404 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2406 iwl_clear_ucode_stations(priv
);
2407 iwl_dealloc_bcast_station(priv
);
2408 iwl_clear_driver_stations(priv
);
2410 /* Unblock any waiting calls */
2411 wake_up_interruptible_all(&priv
->wait_command_queue
);
2413 /* Wipe out the EXIT_PENDING status bit if we are not actually
2414 * exiting the module */
2416 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2418 /* stop and reset the on-board processor */
2419 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2421 /* tell the device to stop sending interrupts */
2422 spin_lock_irqsave(&priv
->lock
, flags
);
2423 iwl_disable_interrupts(priv
);
2424 spin_unlock_irqrestore(&priv
->lock
, flags
);
2425 iwl_synchronize_irq(priv
);
2427 if (priv
->mac80211_registered
)
2428 ieee80211_stop_queues(priv
->hw
);
2430 /* If we have not previously called iwl_init() then
2431 * clear all bits but the RF Kill bit and return */
2432 if (!iwl_is_init(priv
)) {
2433 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2435 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2436 STATUS_GEO_CONFIGURED
|
2437 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2438 STATUS_EXIT_PENDING
;
2442 /* ...otherwise clear out all the status bits but the RF Kill
2443 * bit and continue taking the NIC down. */
2444 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2446 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2447 STATUS_GEO_CONFIGURED
|
2448 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2450 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2451 STATUS_EXIT_PENDING
;
2453 /* device going down, Stop using ICT table */
2454 iwl_disable_ict(priv
);
2456 iwlagn_txq_ctx_stop(priv
);
2457 iwlagn_rxq_stop(priv
);
2459 /* Power-down device's busmaster DMA clocks */
2460 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2463 /* Make sure (redundant) we've released our request to stay awake */
2464 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2466 /* Stop the device, and put it in low power state */
2467 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2470 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2472 if (priv
->ibss_beacon
)
2473 dev_kfree_skb(priv
->ibss_beacon
);
2474 priv
->ibss_beacon
= NULL
;
2476 /* clear out any free frames */
2477 iwl_clear_free_frames(priv
);
2480 static void iwl_down(struct iwl_priv
*priv
)
2482 mutex_lock(&priv
->mutex
);
2484 mutex_unlock(&priv
->mutex
);
2486 iwl_cancel_deferred_work(priv
);
2489 #define HW_READY_TIMEOUT (50)
2491 static int iwl_set_hw_ready(struct iwl_priv
*priv
)
2495 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2496 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
);
2498 /* See if we got it */
2499 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2500 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
2501 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
2503 if (ret
!= -ETIMEDOUT
)
2504 priv
->hw_ready
= true;
2506 priv
->hw_ready
= false;
2508 IWL_DEBUG_INFO(priv
, "hardware %s\n",
2509 (priv
->hw_ready
== 1) ? "ready" : "not ready");
2513 static int iwl_prepare_card_hw(struct iwl_priv
*priv
)
2517 IWL_DEBUG_INFO(priv
, "iwl_prepare_card_hw enter\n");
2519 ret
= iwl_set_hw_ready(priv
);
2523 /* If HW is not ready, prepare the conditions to check again */
2524 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2525 CSR_HW_IF_CONFIG_REG_PREPARE
);
2527 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2528 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
,
2529 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
, 150000);
2531 /* HW should be ready by now, check again. */
2532 if (ret
!= -ETIMEDOUT
)
2533 iwl_set_hw_ready(priv
);
2538 #define MAX_HW_RESTARTS 5
2540 static int __iwl_up(struct iwl_priv
*priv
)
2545 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2546 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2550 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2551 IWL_ERR(priv
, "ucode not available for device bringup\n");
2555 ret
= iwl_alloc_bcast_station(priv
, true);
2559 iwl_prepare_card_hw(priv
);
2561 if (!priv
->hw_ready
) {
2562 IWL_WARN(priv
, "Exit HW not ready\n");
2566 /* If platform's RF_KILL switch is NOT set to KILL */
2567 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2568 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2570 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2572 if (iwl_is_rfkill(priv
)) {
2573 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, true);
2575 iwl_enable_interrupts(priv
);
2576 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2580 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2582 ret
= iwlagn_hw_nic_init(priv
);
2584 IWL_ERR(priv
, "Unable to init nic\n");
2588 /* make sure rfkill handshake bits are cleared */
2589 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2590 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2591 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2593 /* clear (again), then enable host interrupts */
2594 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2595 iwl_enable_interrupts(priv
);
2597 /* really make sure rfkill handshake bits are cleared */
2598 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2599 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2601 /* Copy original ucode data image from disk into backup cache.
2602 * This will be used to initialize the on-board processor's
2603 * data SRAM for a clean start when the runtime program first loads. */
2604 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2605 priv
->ucode_data
.len
);
2607 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2609 /* load bootstrap state machine,
2610 * load bootstrap program into processor's memory,
2611 * prepare to load the "initialize" uCode */
2612 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
2615 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
2620 /* start card; "initialize" will load runtime ucode */
2621 iwl_nic_start(priv
);
2623 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2628 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2630 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2632 /* tried to restart and config the device for as long as our
2633 * patience could withstand */
2634 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2639 /*****************************************************************************
2641 * Workqueue callbacks
2643 *****************************************************************************/
2645 static void iwl_bg_init_alive_start(struct work_struct
*data
)
2647 struct iwl_priv
*priv
=
2648 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2650 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2653 mutex_lock(&priv
->mutex
);
2654 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
2655 mutex_unlock(&priv
->mutex
);
2658 static void iwl_bg_alive_start(struct work_struct
*data
)
2660 struct iwl_priv
*priv
=
2661 container_of(data
, struct iwl_priv
, alive_start
.work
);
2663 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2666 /* enable dram interrupt */
2667 iwl_reset_ict(priv
);
2669 mutex_lock(&priv
->mutex
);
2670 iwl_alive_start(priv
);
2671 mutex_unlock(&priv
->mutex
);
2674 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
2676 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
2677 run_time_calib_work
);
2679 mutex_lock(&priv
->mutex
);
2681 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
2682 test_bit(STATUS_SCANNING
, &priv
->status
)) {
2683 mutex_unlock(&priv
->mutex
);
2687 if (priv
->start_calib
) {
2688 iwl_chain_noise_calibration(priv
, &priv
->_agn
.statistics
);
2690 iwl_sensitivity_calibration(priv
, &priv
->_agn
.statistics
);
2693 mutex_unlock(&priv
->mutex
);
2697 static void iwl_bg_restart(struct work_struct
*data
)
2699 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
2701 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2704 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
2705 mutex_lock(&priv
->mutex
);
2708 mutex_unlock(&priv
->mutex
);
2710 ieee80211_restart_hw(priv
->hw
);
2714 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2717 mutex_lock(&priv
->mutex
);
2719 mutex_unlock(&priv
->mutex
);
2723 static void iwl_bg_rx_replenish(struct work_struct
*data
)
2725 struct iwl_priv
*priv
=
2726 container_of(data
, struct iwl_priv
, rx_replenish
);
2728 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2731 mutex_lock(&priv
->mutex
);
2732 iwlagn_rx_replenish(priv
);
2733 mutex_unlock(&priv
->mutex
);
2736 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2738 void iwl_post_associate(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
2740 struct ieee80211_conf
*conf
= NULL
;
2743 if (!vif
|| !priv
->is_open
)
2746 if (vif
->type
== NL80211_IFTYPE_AP
) {
2747 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
2751 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2754 iwl_scan_cancel_timeout(priv
, 200);
2756 conf
= ieee80211_get_hw_conf(priv
->hw
);
2758 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2759 iwlcore_commit_rxon(priv
);
2761 iwl_setup_rxon_timing(priv
, vif
);
2762 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2763 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2765 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2766 "Attempting to continue.\n");
2768 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2770 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
2772 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2773 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2775 priv
->staging_rxon
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
2777 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
2778 vif
->bss_conf
.aid
, vif
->bss_conf
.beacon_int
);
2780 if (vif
->bss_conf
.assoc_capability
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
2781 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2783 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2785 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2786 if (vif
->bss_conf
.assoc_capability
&
2787 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
2788 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2790 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2792 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
2793 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2796 iwlcore_commit_rxon(priv
);
2798 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
2799 vif
->bss_conf
.aid
, priv
->active_rxon
.bssid_addr
);
2801 switch (vif
->type
) {
2802 case NL80211_IFTYPE_STATION
:
2804 case NL80211_IFTYPE_ADHOC
:
2805 iwl_send_beacon_cmd(priv
);
2808 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
2809 __func__
, vif
->type
);
2813 /* the chain noise calibration will enabled PM upon completion
2814 * If chain noise has already been run, then we need to enable
2815 * power management here */
2816 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2817 iwl_power_update_mode(priv
, false);
2819 /* Enable Rx differential gain and sensitivity calibrations */
2820 iwl_chain_noise_reset(priv
);
2821 priv
->start_calib
= 1;
2825 /*****************************************************************************
2827 * mac80211 entry point functions
2829 *****************************************************************************/
2831 #define UCODE_READY_TIMEOUT (4 * HZ)
2834 * Not a mac80211 entry point function, but it fits in with all the
2835 * other mac80211 functions grouped here.
2837 static int iwl_mac_setup_register(struct iwl_priv
*priv
,
2838 struct iwlagn_ucode_capabilities
*capa
)
2841 struct ieee80211_hw
*hw
= priv
->hw
;
2842 hw
->rate_control_algorithm
= "iwl-agn-rs";
2844 /* Tell mac80211 our characteristics */
2845 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
2846 IEEE80211_HW_AMPDU_AGGREGATION
|
2847 IEEE80211_HW_SPECTRUM_MGMT
;
2849 if (!priv
->cfg
->broken_powersave
)
2850 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
2851 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
2853 if (priv
->cfg
->sku
& IWL_SKU_N
)
2854 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
2855 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
2857 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
2858 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
2860 hw
->wiphy
->interface_modes
=
2861 BIT(NL80211_IFTYPE_STATION
) |
2862 BIT(NL80211_IFTYPE_ADHOC
);
2864 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
2865 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
2868 * For now, disable PS by default because it affects
2869 * RX performance significantly.
2871 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
2873 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
2874 /* we create the 802.11 header and a zero-length SSID element */
2875 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 2;
2877 /* Default value; 4 EDCA QOS priorities */
2880 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
2882 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
2883 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
2884 &priv
->bands
[IEEE80211_BAND_2GHZ
];
2885 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
2886 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
2887 &priv
->bands
[IEEE80211_BAND_5GHZ
];
2889 ret
= ieee80211_register_hw(priv
->hw
);
2891 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
2894 priv
->mac80211_registered
= 1;
2900 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2902 struct iwl_priv
*priv
= hw
->priv
;
2905 IWL_DEBUG_MAC80211(priv
, "enter\n");
2907 /* we should be verifying the device is ready to be opened */
2908 mutex_lock(&priv
->mutex
);
2909 ret
= __iwl_up(priv
);
2910 mutex_unlock(&priv
->mutex
);
2915 if (iwl_is_rfkill(priv
))
2918 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2920 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2921 * mac80211 will not be run successfully. */
2922 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
2923 test_bit(STATUS_READY
, &priv
->status
),
2924 UCODE_READY_TIMEOUT
);
2926 if (!test_bit(STATUS_READY
, &priv
->status
)) {
2927 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
2928 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
2933 iwl_led_start(priv
);
2937 IWL_DEBUG_MAC80211(priv
, "leave\n");
2941 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
2943 struct iwl_priv
*priv
= hw
->priv
;
2945 IWL_DEBUG_MAC80211(priv
, "enter\n");
2952 if (iwl_is_ready_rf(priv
) || test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
2953 /* stop mac, cancel any scan request and clear
2954 * RXON_FILTER_ASSOC_MSK BIT
2956 mutex_lock(&priv
->mutex
);
2957 iwl_scan_cancel_timeout(priv
, 100);
2958 mutex_unlock(&priv
->mutex
);
2963 flush_workqueue(priv
->workqueue
);
2965 /* enable interrupts again in order to receive rfkill changes */
2966 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2967 iwl_enable_interrupts(priv
);
2969 IWL_DEBUG_MAC80211(priv
, "leave\n");
2972 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2974 struct iwl_priv
*priv
= hw
->priv
;
2976 IWL_DEBUG_MACDUMP(priv
, "enter\n");
2978 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
2979 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
2981 if (iwlagn_tx_skb(priv
, skb
))
2982 dev_kfree_skb_any(skb
);
2984 IWL_DEBUG_MACDUMP(priv
, "leave\n");
2985 return NETDEV_TX_OK
;
2988 void iwl_config_ap(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
2992 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2995 /* The following should be done only at AP bring up */
2996 if (!iwl_is_associated(priv
)) {
2998 /* RXON - unassoc (to set timing command) */
2999 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3000 iwlcore_commit_rxon(priv
);
3003 iwl_setup_rxon_timing(priv
, vif
);
3004 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3005 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3007 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3008 "Attempting to continue.\n");
3010 /* AP has all antennas */
3011 priv
->chain_noise_data
.active_chains
=
3012 priv
->hw_params
.valid_rx_ant
;
3013 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
3014 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
3015 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
3017 priv
->staging_rxon
.assoc_id
= 0;
3019 if (vif
->bss_conf
.assoc_capability
&
3020 WLAN_CAPABILITY_SHORT_PREAMBLE
)
3021 priv
->staging_rxon
.flags
|=
3022 RXON_FLG_SHORT_PREAMBLE_MSK
;
3024 priv
->staging_rxon
.flags
&=
3025 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3027 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3028 if (vif
->bss_conf
.assoc_capability
&
3029 WLAN_CAPABILITY_SHORT_SLOT_TIME
)
3030 priv
->staging_rxon
.flags
|=
3031 RXON_FLG_SHORT_SLOT_MSK
;
3033 priv
->staging_rxon
.flags
&=
3034 ~RXON_FLG_SHORT_SLOT_MSK
;
3036 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
3037 priv
->staging_rxon
.flags
&=
3038 ~RXON_FLG_SHORT_SLOT_MSK
;
3040 /* restore RXON assoc */
3041 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3042 iwlcore_commit_rxon(priv
);
3044 iwl_send_beacon_cmd(priv
);
3046 /* FIXME - we need to add code here to detect a totally new
3047 * configuration, reset the AP, unassoc, rxon timing, assoc,
3048 * clear sta table, add BCAST sta... */
3051 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
3052 struct ieee80211_vif
*vif
,
3053 struct ieee80211_key_conf
*keyconf
,
3054 struct ieee80211_sta
*sta
,
3055 u32 iv32
, u16
*phase1key
)
3058 struct iwl_priv
*priv
= hw
->priv
;
3059 IWL_DEBUG_MAC80211(priv
, "enter\n");
3061 iwl_update_tkip_key(priv
, keyconf
, sta
,
3064 IWL_DEBUG_MAC80211(priv
, "leave\n");
3067 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3068 struct ieee80211_vif
*vif
,
3069 struct ieee80211_sta
*sta
,
3070 struct ieee80211_key_conf
*key
)
3072 struct iwl_priv
*priv
= hw
->priv
;
3075 bool is_default_wep_key
= false;
3077 IWL_DEBUG_MAC80211(priv
, "enter\n");
3079 if (priv
->cfg
->mod_params
->sw_crypto
) {
3080 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3084 sta_id
= iwl_sta_id_or_broadcast(priv
, sta
);
3085 if (sta_id
== IWL_INVALID_STATION
)
3088 mutex_lock(&priv
->mutex
);
3089 iwl_scan_cancel_timeout(priv
, 100);
3092 * If we are getting WEP group key and we didn't receive any key mapping
3093 * so far, we are in legacy wep mode (group key only), otherwise we are
3095 * In legacy wep mode, we use another host command to the uCode.
3097 if (key
->alg
== ALG_WEP
&& !sta
&& vif
->type
!= NL80211_IFTYPE_AP
) {
3099 is_default_wep_key
= !priv
->key_mapping_key
;
3101 is_default_wep_key
=
3102 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
3107 if (is_default_wep_key
)
3108 ret
= iwl_set_default_wep_key(priv
, key
);
3110 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
3112 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3115 if (is_default_wep_key
)
3116 ret
= iwl_remove_default_wep_key(priv
, key
);
3118 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
3120 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3126 mutex_unlock(&priv
->mutex
);
3127 IWL_DEBUG_MAC80211(priv
, "leave\n");
3132 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
3133 struct ieee80211_vif
*vif
,
3134 enum ieee80211_ampdu_mlme_action action
,
3135 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
3137 struct iwl_priv
*priv
= hw
->priv
;
3140 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
3143 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
3147 case IEEE80211_AMPDU_RX_START
:
3148 IWL_DEBUG_HT(priv
, "start Rx\n");
3149 return iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
3150 case IEEE80211_AMPDU_RX_STOP
:
3151 IWL_DEBUG_HT(priv
, "stop Rx\n");
3152 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
3153 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3157 case IEEE80211_AMPDU_TX_START
:
3158 IWL_DEBUG_HT(priv
, "start Tx\n");
3159 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
3161 priv
->_agn
.agg_tids_count
++;
3162 IWL_DEBUG_HT(priv
, "priv->_agn.agg_tids_count = %u\n",
3163 priv
->_agn
.agg_tids_count
);
3166 case IEEE80211_AMPDU_TX_STOP
:
3167 IWL_DEBUG_HT(priv
, "stop Tx\n");
3168 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
3169 if ((ret
== 0) && (priv
->_agn
.agg_tids_count
> 0)) {
3170 priv
->_agn
.agg_tids_count
--;
3171 IWL_DEBUG_HT(priv
, "priv->_agn.agg_tids_count = %u\n",
3172 priv
->_agn
.agg_tids_count
);
3174 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3178 case IEEE80211_AMPDU_TX_OPERATIONAL
:
3182 IWL_DEBUG_HT(priv
, "unknown\n");
3189 static void iwl_mac_sta_notify(struct ieee80211_hw
*hw
,
3190 struct ieee80211_vif
*vif
,
3191 enum sta_notify_cmd cmd
,
3192 struct ieee80211_sta
*sta
)
3194 struct iwl_priv
*priv
= hw
->priv
;
3195 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
3199 case STA_NOTIFY_SLEEP
:
3200 WARN_ON(!sta_priv
->client
);
3201 sta_priv
->asleep
= true;
3202 if (atomic_read(&sta_priv
->pending_frames
) > 0)
3203 ieee80211_sta_block_awake(hw
, sta
, true);
3205 case STA_NOTIFY_AWAKE
:
3206 WARN_ON(!sta_priv
->client
);
3207 if (!sta_priv
->asleep
)
3209 sta_priv
->asleep
= false;
3210 sta_id
= iwl_sta_id(sta
);
3211 if (sta_id
!= IWL_INVALID_STATION
)
3212 iwl_sta_modify_ps_wake(priv
, sta_id
);
3219 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
3220 struct ieee80211_vif
*vif
,
3221 struct ieee80211_sta
*sta
)
3223 struct iwl_priv
*priv
= hw
->priv
;
3224 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
3225 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
3229 sta_priv
->common
.sta_id
= IWL_INVALID_STATION
;
3231 IWL_DEBUG_INFO(priv
, "received request to add station %pM\n",
3234 atomic_set(&sta_priv
->pending_frames
, 0);
3235 if (vif
->type
== NL80211_IFTYPE_AP
)
3236 sta_priv
->client
= true;
3238 ret
= iwl_add_station_common(priv
, sta
->addr
, is_ap
, &sta
->ht_cap
,
3241 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
3243 /* Should we return success if return code is EEXIST ? */
3247 sta_priv
->common
.sta_id
= sta_id
;
3249 /* Initialize rate scaling */
3250 IWL_DEBUG_INFO(priv
, "Initializing rate scaling for station %pM\n",
3252 iwl_rs_rate_init(priv
, sta
, sta_id
);
3257 /*****************************************************************************
3261 *****************************************************************************/
3263 #ifdef CONFIG_IWLWIFI_DEBUG
3266 * The following adds a new attribute to the sysfs representation
3267 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3268 * used for controlling the debug level.
3270 * See the level definitions in iwl for details.
3272 * The debug_level being managed using sysfs below is a per device debug
3273 * level that is used instead of the global debug level if it (the per
3274 * device debug level) is set.
3276 static ssize_t
show_debug_level(struct device
*d
,
3277 struct device_attribute
*attr
, char *buf
)
3279 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3280 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3282 static ssize_t
store_debug_level(struct device
*d
,
3283 struct device_attribute
*attr
,
3284 const char *buf
, size_t count
)
3286 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3290 ret
= strict_strtoul(buf
, 0, &val
);
3292 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
3294 priv
->debug_level
= val
;
3295 if (iwl_alloc_traffic_mem(priv
))
3297 "Not enough memory to generate traffic log\n");
3299 return strnlen(buf
, count
);
3302 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3303 show_debug_level
, store_debug_level
);
3306 #endif /* CONFIG_IWLWIFI_DEBUG */
3309 static ssize_t
show_temperature(struct device
*d
,
3310 struct device_attribute
*attr
, char *buf
)
3312 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3314 if (!iwl_is_alive(priv
))
3317 return sprintf(buf
, "%d\n", priv
->temperature
);
3320 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3322 static ssize_t
show_tx_power(struct device
*d
,
3323 struct device_attribute
*attr
, char *buf
)
3325 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3327 if (!iwl_is_ready_rf(priv
))
3328 return sprintf(buf
, "off\n");
3330 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3333 static ssize_t
store_tx_power(struct device
*d
,
3334 struct device_attribute
*attr
,
3335 const char *buf
, size_t count
)
3337 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3341 ret
= strict_strtoul(buf
, 10, &val
);
3343 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
3345 ret
= iwl_set_tx_power(priv
, val
, false);
3347 IWL_ERR(priv
, "failed setting tx power (0x%d).\n",
3355 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3357 static ssize_t
show_rts_ht_protection(struct device
*d
,
3358 struct device_attribute
*attr
, char *buf
)
3360 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3362 return sprintf(buf
, "%s\n",
3363 priv
->cfg
->use_rts_for_ht
? "RTS/CTS" : "CTS-to-self");
3366 static ssize_t
store_rts_ht_protection(struct device
*d
,
3367 struct device_attribute
*attr
,
3368 const char *buf
, size_t count
)
3370 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3374 ret
= strict_strtoul(buf
, 10, &val
);
3376 IWL_INFO(priv
, "Input is not in decimal form.\n");
3378 if (!iwl_is_associated(priv
))
3379 priv
->cfg
->use_rts_for_ht
= val
? true : false;
3381 IWL_ERR(priv
, "Sta associated with AP - "
3382 "Change protection mechanism is not allowed\n");
3388 static DEVICE_ATTR(rts_ht_protection
, S_IWUSR
| S_IRUGO
,
3389 show_rts_ht_protection
, store_rts_ht_protection
);
3392 /*****************************************************************************
3394 * driver setup and teardown
3396 *****************************************************************************/
3398 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3400 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3402 init_waitqueue_head(&priv
->wait_command_queue
);
3404 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3405 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3406 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3407 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3408 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3409 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3411 iwl_setup_scan_deferred_work(priv
);
3413 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3414 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3416 init_timer(&priv
->statistics_periodic
);
3417 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3418 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3420 init_timer(&priv
->ucode_trace
);
3421 priv
->ucode_trace
.data
= (unsigned long)priv
;
3422 priv
->ucode_trace
.function
= iwl_bg_ucode_trace
;
3424 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
3425 init_timer(&priv
->monitor_recover
);
3426 priv
->monitor_recover
.data
= (unsigned long)priv
;
3427 priv
->monitor_recover
.function
=
3428 priv
->cfg
->ops
->lib
->recover_from_tx_stall
;
3431 if (!priv
->cfg
->use_isr_legacy
)
3432 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3433 iwl_irq_tasklet
, (unsigned long)priv
);
3435 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3436 iwl_irq_tasklet_legacy
, (unsigned long)priv
);
3439 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3441 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3442 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3444 cancel_delayed_work_sync(&priv
->init_alive_start
);
3445 cancel_delayed_work(&priv
->scan_check
);
3446 cancel_work_sync(&priv
->start_internal_scan
);
3447 cancel_delayed_work(&priv
->alive_start
);
3448 cancel_work_sync(&priv
->beacon_update
);
3449 del_timer_sync(&priv
->statistics_periodic
);
3450 del_timer_sync(&priv
->ucode_trace
);
3451 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
)
3452 del_timer_sync(&priv
->monitor_recover
);
3455 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
3456 struct ieee80211_rate
*rates
)
3460 for (i
= 0; i
< IWL_RATE_COUNT_LEGACY
; i
++) {
3461 rates
[i
].bitrate
= iwl_rates
[i
].ieee
* 5;
3462 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
3463 rates
[i
].hw_value_short
= i
;
3465 if ((i
>= IWL_FIRST_CCK_RATE
) && (i
<= IWL_LAST_CCK_RATE
)) {
3467 * If CCK != 1M then set short preamble rate flag.
3470 (iwl_rates
[i
].plcp
== IWL_RATE_1M_PLCP
) ?
3471 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
3476 static int iwl_init_drv(struct iwl_priv
*priv
)
3480 priv
->ibss_beacon
= NULL
;
3482 spin_lock_init(&priv
->sta_lock
);
3483 spin_lock_init(&priv
->hcmd_lock
);
3485 INIT_LIST_HEAD(&priv
->free_frames
);
3487 mutex_init(&priv
->mutex
);
3488 mutex_init(&priv
->sync_cmd_mutex
);
3490 priv
->ieee_channels
= NULL
;
3491 priv
->ieee_rates
= NULL
;
3492 priv
->band
= IEEE80211_BAND_2GHZ
;
3494 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3495 priv
->current_ht_config
.smps
= IEEE80211_SMPS_STATIC
;
3496 priv
->missed_beacon_threshold
= IWL_MISSED_BEACON_THRESHOLD_DEF
;
3497 priv
->_agn
.agg_tids_count
= 0;
3499 /* initialize force reset */
3500 priv
->force_reset
[IWL_RF_RESET
].reset_duration
=
3501 IWL_DELAY_NEXT_FORCE_RF_RESET
;
3502 priv
->force_reset
[IWL_FW_RESET
].reset_duration
=
3503 IWL_DELAY_NEXT_FORCE_FW_RELOAD
;
3505 /* Choose which receivers/antennas to use */
3506 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
3507 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
3509 iwl_init_scan_params(priv
);
3511 /* Set the tx_power_user_lmt to the lowest power level
3512 * this value will get overwritten by channel max power avg
3514 priv
->tx_power_user_lmt
= IWLAGN_TX_POWER_TARGET_POWER_MIN
;
3516 ret
= iwl_init_channel_map(priv
);
3518 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3522 ret
= iwlcore_init_geos(priv
);
3524 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3525 goto err_free_channel_map
;
3527 iwl_init_hw_rates(priv
, priv
->ieee_rates
);
3531 err_free_channel_map
:
3532 iwl_free_channel_map(priv
);
3537 static void iwl_uninit_drv(struct iwl_priv
*priv
)
3539 iwl_calib_free_results(priv
);
3540 iwlcore_free_geos(priv
);
3541 iwl_free_channel_map(priv
);
3542 kfree(priv
->scan_cmd
);
3545 static struct attribute
*iwl_sysfs_entries
[] = {
3546 &dev_attr_temperature
.attr
,
3547 &dev_attr_tx_power
.attr
,
3548 &dev_attr_rts_ht_protection
.attr
,
3549 #ifdef CONFIG_IWLWIFI_DEBUG
3550 &dev_attr_debug_level
.attr
,
3555 static struct attribute_group iwl_attribute_group
= {
3556 .name
= NULL
, /* put in device directory */
3557 .attrs
= iwl_sysfs_entries
,
3560 static struct ieee80211_ops iwl_hw_ops
= {
3562 .start
= iwl_mac_start
,
3563 .stop
= iwl_mac_stop
,
3564 .add_interface
= iwl_mac_add_interface
,
3565 .remove_interface
= iwl_mac_remove_interface
,
3566 .config
= iwl_mac_config
,
3567 .configure_filter
= iwl_configure_filter
,
3568 .set_key
= iwl_mac_set_key
,
3569 .update_tkip_key
= iwl_mac_update_tkip_key
,
3570 .conf_tx
= iwl_mac_conf_tx
,
3571 .reset_tsf
= iwl_mac_reset_tsf
,
3572 .bss_info_changed
= iwl_bss_info_changed
,
3573 .ampdu_action
= iwl_mac_ampdu_action
,
3574 .hw_scan
= iwl_mac_hw_scan
,
3575 .sta_notify
= iwl_mac_sta_notify
,
3576 .sta_add
= iwlagn_mac_sta_add
,
3577 .sta_remove
= iwl_mac_sta_remove
,
3580 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3583 struct iwl_priv
*priv
;
3584 struct ieee80211_hw
*hw
;
3585 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3586 unsigned long flags
;
3589 /************************
3590 * 1. Allocating HW data
3591 ************************/
3593 /* Disabling hardware scan means that mac80211 will perform scans
3594 * "the hard way", rather than using device's scan. */
3595 if (cfg
->mod_params
->disable_hw_scan
) {
3596 if (iwl_debug_level
& IWL_DL_INFO
)
3597 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3598 "Disabling hw_scan\n");
3599 iwl_hw_ops
.hw_scan
= NULL
;
3602 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3608 /* At this point both hw and priv are allocated. */
3610 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3612 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3614 priv
->pci_dev
= pdev
;
3615 priv
->inta_mask
= CSR_INI_SET_MASK
;
3617 #ifdef CONFIG_IWLWIFI_DEBUG
3618 atomic_set(&priv
->restrict_refcnt
, 0);
3620 if (iwl_alloc_traffic_mem(priv
))
3621 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3623 /**************************
3624 * 2. Initializing PCI bus
3625 **************************/
3626 if (pci_enable_device(pdev
)) {
3628 goto out_ieee80211_free_hw
;
3631 pci_set_master(pdev
);
3633 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3635 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3637 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3639 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3640 /* both attempts failed: */
3642 IWL_WARN(priv
, "No suitable DMA available.\n");
3643 goto out_pci_disable_device
;
3647 err
= pci_request_regions(pdev
, DRV_NAME
);
3649 goto out_pci_disable_device
;
3651 pci_set_drvdata(pdev
, priv
);
3654 /***********************
3655 * 3. Read REV register
3656 ***********************/
3657 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3658 if (!priv
->hw_base
) {
3660 goto out_pci_release_regions
;
3663 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3664 (unsigned long long) pci_resource_len(pdev
, 0));
3665 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3667 /* these spin locks will be used in apm_ops.init and EEPROM access
3668 * we should init now
3670 spin_lock_init(&priv
->reg_lock
);
3671 spin_lock_init(&priv
->lock
);
3674 * stop and reset the on-board processor just in case it is in a
3675 * strange state ... like being left stranded by a primary kernel
3676 * and this is now the kdump kernel trying to start up
3678 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
3680 iwl_hw_detect(priv
);
3681 IWL_INFO(priv
, "Detected %s, REV=0x%X\n",
3682 priv
->cfg
->name
, priv
->hw_rev
);
3684 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3685 * PCI Tx retries from interfering with C3 CPU state */
3686 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3688 iwl_prepare_card_hw(priv
);
3689 if (!priv
->hw_ready
) {
3690 IWL_WARN(priv
, "Failed, HW not ready\n");
3697 /* Read the EEPROM */
3698 err
= iwl_eeprom_init(priv
);
3700 IWL_ERR(priv
, "Unable to init EEPROM\n");
3703 err
= iwl_eeprom_check_version(priv
);
3705 goto out_free_eeprom
;
3707 /* extract MAC Address */
3708 iwl_eeprom_get_mac(priv
, priv
->mac_addr
);
3709 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", priv
->mac_addr
);
3710 SET_IEEE80211_PERM_ADDR(priv
->hw
, priv
->mac_addr
);
3712 /************************
3713 * 5. Setup HW constants
3714 ************************/
3715 if (iwl_set_hw_params(priv
)) {
3716 IWL_ERR(priv
, "failed to set hw parameters\n");
3717 goto out_free_eeprom
;
3720 /*******************
3722 *******************/
3724 err
= iwl_init_drv(priv
);
3726 goto out_free_eeprom
;
3727 /* At this point both hw and priv are initialized. */
3729 /********************
3731 ********************/
3732 spin_lock_irqsave(&priv
->lock
, flags
);
3733 iwl_disable_interrupts(priv
);
3734 spin_unlock_irqrestore(&priv
->lock
, flags
);
3736 pci_enable_msi(priv
->pci_dev
);
3738 iwl_alloc_isr_ict(priv
);
3739 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
3740 IRQF_SHARED
, DRV_NAME
, priv
);
3742 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
3743 goto out_disable_msi
;
3745 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3747 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3751 iwl_setup_deferred_work(priv
);
3752 iwl_setup_rx_handlers(priv
);
3754 /*********************************************
3755 * 8. Enable interrupts and read RFKILL state
3756 *********************************************/
3758 /* enable interrupts if needed: hw bug w/a */
3759 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3760 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3761 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3762 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3765 iwl_enable_interrupts(priv
);
3767 /* If platform's RF_KILL switch is NOT set to KILL */
3768 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3769 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3771 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3773 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
3774 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
3776 iwl_power_initialize(priv
);
3777 iwl_tt_initialize(priv
);
3779 init_completion(&priv
->_agn
.firmware_loading_complete
);
3781 err
= iwl_request_firmware(priv
, true);
3783 goto out_remove_sysfs
;
3788 destroy_workqueue(priv
->workqueue
);
3789 priv
->workqueue
= NULL
;
3790 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3792 free_irq(priv
->pci_dev
->irq
, priv
);
3793 iwl_free_isr_ict(priv
);
3795 pci_disable_msi(priv
->pci_dev
);
3796 iwl_uninit_drv(priv
);
3798 iwl_eeprom_free(priv
);
3800 pci_iounmap(pdev
, priv
->hw_base
);
3801 out_pci_release_regions
:
3802 pci_set_drvdata(pdev
, NULL
);
3803 pci_release_regions(pdev
);
3804 out_pci_disable_device
:
3805 pci_disable_device(pdev
);
3806 out_ieee80211_free_hw
:
3807 iwl_free_traffic_mem(priv
);
3808 ieee80211_free_hw(priv
->hw
);
3813 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3815 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3816 unsigned long flags
;
3821 wait_for_completion(&priv
->_agn
.firmware_loading_complete
);
3823 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3825 iwl_dbgfs_unregister(priv
);
3826 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3828 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3829 * to be called and iwl_down since we are removing the device
3830 * we need to set STATUS_EXIT_PENDING bit.
3832 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3833 if (priv
->mac80211_registered
) {
3834 ieee80211_unregister_hw(priv
->hw
);
3835 priv
->mac80211_registered
= 0;
3841 * Make sure device is reset to low power before unloading driver.
3842 * This may be redundant with iwl_down(), but there are paths to
3843 * run iwl_down() without calling apm_ops.stop(), and there are
3844 * paths to avoid running iwl_down() at all before leaving driver.
3845 * This (inexpensive) call *makes sure* device is reset.
3847 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
3851 /* make sure we flush any pending irq or
3852 * tasklet for the driver
3854 spin_lock_irqsave(&priv
->lock
, flags
);
3855 iwl_disable_interrupts(priv
);
3856 spin_unlock_irqrestore(&priv
->lock
, flags
);
3858 iwl_synchronize_irq(priv
);
3860 iwl_dealloc_ucode_pci(priv
);
3863 iwlagn_rx_queue_free(priv
, &priv
->rxq
);
3864 iwlagn_hw_txq_ctx_free(priv
);
3866 iwl_eeprom_free(priv
);
3869 /*netif_stop_queue(dev); */
3870 flush_workqueue(priv
->workqueue
);
3872 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3873 * priv->workqueue... so we can't take down the workqueue
3875 destroy_workqueue(priv
->workqueue
);
3876 priv
->workqueue
= NULL
;
3877 iwl_free_traffic_mem(priv
);
3879 free_irq(priv
->pci_dev
->irq
, priv
);
3880 pci_disable_msi(priv
->pci_dev
);
3881 pci_iounmap(pdev
, priv
->hw_base
);
3882 pci_release_regions(pdev
);
3883 pci_disable_device(pdev
);
3884 pci_set_drvdata(pdev
, NULL
);
3886 iwl_uninit_drv(priv
);
3888 iwl_free_isr_ict(priv
);
3890 if (priv
->ibss_beacon
)
3891 dev_kfree_skb(priv
->ibss_beacon
);
3893 ieee80211_free_hw(priv
->hw
);
3897 /*****************************************************************************
3899 * driver and module entry point
3901 *****************************************************************************/
3903 /* Hardware specific file defines the PCI IDs table for that hardware module */
3904 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids
) = {
3905 #ifdef CONFIG_IWL4965
3906 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3907 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3908 #endif /* CONFIG_IWL4965 */
3909 #ifdef CONFIG_IWL5000
3910 /* 5100 Series WiFi */
3911 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg
)}, /* Mini Card */
3912 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg
)}, /* Half Mini Card */
3913 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg
)}, /* Mini Card */
3914 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg
)}, /* Half Mini Card */
3915 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg
)}, /* Mini Card */
3916 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg
)}, /* Half Mini Card */
3917 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)}, /* Mini Card */
3918 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)}, /* Half Mini Card */
3919 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg
)}, /* Mini Card */
3920 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg
)}, /* Half Mini Card */
3921 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg
)}, /* Mini Card */
3922 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg
)}, /* Half Mini Card */
3923 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg
)}, /* Mini Card */
3924 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg
)}, /* Half Mini Card */
3925 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg
)}, /* Mini Card */
3926 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)}, /* Half Mini Card */
3927 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg
)}, /* Mini Card */
3928 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg
)}, /* Half Mini Card */
3929 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg
)}, /* Mini Card */
3930 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg
)}, /* Half Mini Card */
3931 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg
)}, /* Mini Card */
3932 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg
)}, /* Half Mini Card */
3933 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)}, /* Mini Card */
3934 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg
)}, /* Half Mini Card */
3936 /* 5300 Series WiFi */
3937 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg
)}, /* Mini Card */
3938 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg
)}, /* Half Mini Card */
3939 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg
)}, /* Mini Card */
3940 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg
)}, /* Half Mini Card */
3941 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg
)}, /* Mini Card */
3942 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg
)}, /* Half Mini Card */
3943 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg
)}, /* Mini Card */
3944 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg
)}, /* Half Mini Card */
3945 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg
)}, /* Mini Card */
3946 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg
)}, /* Half Mini Card */
3947 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg
)}, /* Mini Card */
3948 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg
)}, /* Half Mini Card */
3950 /* 5350 Series WiFi/WiMax */
3951 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)}, /* Mini Card */
3952 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)}, /* Mini Card */
3953 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)}, /* Mini Card */
3955 /* 5150 Series Wifi/WiMax */
3956 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg
)}, /* Mini Card */
3957 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg
)}, /* Half Mini Card */
3958 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg
)}, /* Mini Card */
3959 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg
)}, /* Half Mini Card */
3960 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg
)}, /* Mini Card */
3961 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg
)}, /* Half Mini Card */
3963 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg
)}, /* Mini Card */
3964 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg
)}, /* Half Mini Card */
3965 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg
)}, /* Mini Card */
3966 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg
)}, /* Half Mini Card */
3969 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg
)},
3970 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg
)},
3971 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg
)},
3972 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg
)},
3973 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg
)},
3974 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg
)},
3975 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg
)},
3976 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg
)},
3977 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg
)},
3978 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg
)},
3980 /* 6x00 Series Gen2a */
3981 {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg
)},
3982 {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg
)},
3983 {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg
)},
3985 /* 6x50 WiFi/WiMax Series */
3986 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg
)},
3987 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg
)},
3988 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg
)},
3989 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg
)},
3990 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg
)},
3991 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg
)},
3993 /* 1000 Series WiFi */
3994 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg
)},
3995 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg
)},
3996 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg
)},
3997 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg
)},
3998 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg
)},
3999 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg
)},
4000 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg
)},
4001 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg
)},
4002 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg
)},
4003 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg
)},
4004 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg
)},
4005 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg
)},
4006 #endif /* CONFIG_IWL5000 */
4010 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
4012 static struct pci_driver iwl_driver
= {
4014 .id_table
= iwl_hw_card_ids
,
4015 .probe
= iwl_pci_probe
,
4016 .remove
= __devexit_p(iwl_pci_remove
),
4018 .suspend
= iwl_pci_suspend
,
4019 .resume
= iwl_pci_resume
,
4023 static int __init
iwl_init(void)
4027 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4028 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4030 ret
= iwlagn_rate_control_register();
4032 printk(KERN_ERR DRV_NAME
4033 "Unable to register rate control algorithm: %d\n", ret
);
4037 ret
= pci_register_driver(&iwl_driver
);
4039 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4040 goto error_register
;
4046 iwlagn_rate_control_unregister();
4050 static void __exit
iwl_exit(void)
4052 pci_unregister_driver(&iwl_driver
);
4053 iwlagn_rate_control_unregister();
4056 module_exit(iwl_exit
);
4057 module_init(iwl_init
);
4059 #ifdef CONFIG_IWLWIFI_DEBUG
4060 module_param_named(debug50
, iwl_debug_level
, uint
, S_IRUGO
);
4061 MODULE_PARM_DESC(debug50
, "50XX debug output mask (deprecated)");
4062 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4063 MODULE_PARM_DESC(debug
, "debug output mask");
4066 module_param_named(swcrypto50
, iwlagn_mod_params
.sw_crypto
, bool, S_IRUGO
);
4067 MODULE_PARM_DESC(swcrypto50
,
4068 "using crypto in software (default 0 [hardware]) (deprecated)");
4069 module_param_named(swcrypto
, iwlagn_mod_params
.sw_crypto
, int, S_IRUGO
);
4070 MODULE_PARM_DESC(swcrypto
, "using crypto in software (default 0 [hardware])");
4071 module_param_named(queues_num50
,
4072 iwlagn_mod_params
.num_of_queues
, int, S_IRUGO
);
4073 MODULE_PARM_DESC(queues_num50
,
4074 "number of hw queues in 50xx series (deprecated)");
4075 module_param_named(queues_num
, iwlagn_mod_params
.num_of_queues
, int, S_IRUGO
);
4076 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
4077 module_param_named(11n_disable50
, iwlagn_mod_params
.disable_11n
, int, S_IRUGO
);
4078 MODULE_PARM_DESC(11n_disable50
, "disable 50XX 11n functionality (deprecated)");
4079 module_param_named(11n_disable
, iwlagn_mod_params
.disable_11n
, int, S_IRUGO
);
4080 MODULE_PARM_DESC(11n_disable
, "disable 11n functionality");
4081 module_param_named(amsdu_size_8K50
, iwlagn_mod_params
.amsdu_size_8K
,
4083 MODULE_PARM_DESC(amsdu_size_8K50
,
4084 "enable 8K amsdu size in 50XX series (deprecated)");
4085 module_param_named(amsdu_size_8K
, iwlagn_mod_params
.amsdu_size_8K
,
4087 MODULE_PARM_DESC(amsdu_size_8K
, "enable 8K amsdu size");
4088 module_param_named(fw_restart50
, iwlagn_mod_params
.restart_fw
, int, S_IRUGO
);
4089 MODULE_PARM_DESC(fw_restart50
,
4090 "restart firmware in case of error (deprecated)");
4091 module_param_named(fw_restart
, iwlagn_mod_params
.restart_fw
, int, S_IRUGO
);
4092 MODULE_PARM_DESC(fw_restart
, "restart firmware in case of error");
4094 disable_hw_scan
, iwlagn_mod_params
.disable_hw_scan
, int, S_IRUGO
);
4095 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4097 module_param_named(ucode_alternative
, iwlagn_wanted_ucode_alternative
, int,
4099 MODULE_PARM_DESC(ucode_alternative
,
4100 "specify ucode alternative to use from ucode file");