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/slab.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/wireless.h>
41 #include <linux/firmware.h>
42 #include <linux/etherdevice.h>
43 #include <linux/if_arp.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwlagn"
51 #include "iwl-eeprom.h"
55 #include "iwl-helpers.h"
57 #include "iwl-calib.h"
61 /******************************************************************************
65 ******************************************************************************/
68 * module name, copyright, version, etc.
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
72 #ifdef CONFIG_IWLWIFI_DEBUG
78 #define DRV_VERSION IWLWIFI_VERSION VD
81 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
82 MODULE_VERSION(DRV_VERSION
);
83 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
84 MODULE_LICENSE("GPL");
85 MODULE_ALIAS("iwl4965");
88 * iwl_commit_rxon - commit staging_rxon to hardware
90 * The RXON command in staging_rxon is committed to the hardware and
91 * the active_rxon structure is updated with the new data. This
92 * function correctly transitions out of the RXON_ASSOC_MSK state if
93 * a HW tune is required based on the RXON structure changes.
95 int iwl_commit_rxon(struct iwl_priv
*priv
)
97 /* cast away the const for active_rxon in this function */
98 struct iwl_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
101 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
103 if (!iwl_is_alive(priv
))
106 /* always get timestamp with Rx frame */
107 priv
->staging_rxon
.flags
|= RXON_FLG_TSF2HOST_MSK
;
109 ret
= iwl_check_rxon_cmd(priv
);
111 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
116 * receive commit_rxon request
117 * abort any previous channel switch if still in process
119 if (priv
->switch_rxon
.switch_in_progress
&&
120 (priv
->switch_rxon
.channel
!= priv
->staging_rxon
.channel
)) {
121 IWL_DEBUG_11H(priv
, "abort channel switch on %d\n",
122 le16_to_cpu(priv
->switch_rxon
.channel
));
123 priv
->switch_rxon
.switch_in_progress
= false;
126 /* If we don't need to send a full RXON, we can use
127 * iwl_rxon_assoc_cmd which is used to reconfigure filter
128 * and other flags for the current radio configuration. */
129 if (!iwl_full_rxon_required(priv
)) {
130 ret
= iwl_send_rxon_assoc(priv
);
132 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
136 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
137 iwl_print_rx_config_cmd(priv
);
141 /* If we are currently associated and the new config requires
142 * an RXON_ASSOC and the new config wants the associated mask enabled,
143 * we must clear the associated from the active configuration
144 * before we apply the new config */
145 if (iwl_is_associated(priv
) && new_assoc
) {
146 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
147 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
149 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
150 sizeof(struct iwl_rxon_cmd
),
153 /* If the mask clearing failed then we set
154 * active_rxon back to what it was previously */
156 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
157 IWL_ERR(priv
, "Error clearing ASSOC_MSK (%d)\n", ret
);
160 iwl_clear_ucode_stations(priv
);
161 iwl_restore_stations(priv
);
162 ret
= iwl_restore_default_wep_keys(priv
);
164 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
169 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
170 "* with%s RXON_FILTER_ASSOC_MSK\n"
173 (new_assoc
? "" : "out"),
174 le16_to_cpu(priv
->staging_rxon
.channel
),
175 priv
->staging_rxon
.bssid_addr
);
177 iwl_set_rxon_hwcrypto(priv
, !priv
->cfg
->mod_params
->sw_crypto
);
179 /* Apply the new configuration
180 * RXON unassoc clears the station table in uCode so restoration of
181 * stations is needed after it (the RXON command) completes
184 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
185 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
187 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
190 IWL_DEBUG_INFO(priv
, "Return from !new_assoc RXON.\n");
191 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
192 iwl_clear_ucode_stations(priv
);
193 iwl_restore_stations(priv
);
194 ret
= iwl_restore_default_wep_keys(priv
);
196 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
201 priv
->start_calib
= 0;
204 * allow CTS-to-self if possible for new association.
205 * this is relevant only for 5000 series and up,
206 * but will not damage 4965
208 priv
->staging_rxon
.flags
|= RXON_FLG_SELF_CTS_EN
;
210 /* Apply the new configuration
211 * RXON assoc doesn't clear the station table in uCode,
213 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
214 sizeof(struct iwl_rxon_cmd
), &priv
->staging_rxon
);
216 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
219 memcpy(active_rxon
, &priv
->staging_rxon
, sizeof(*active_rxon
));
221 iwl_print_rx_config_cmd(priv
);
223 iwl_init_sensitivity(priv
);
225 /* If we issue a new RXON command which required a tune then we must
226 * send a new TXPOWER command or we won't be able to Tx any frames */
227 ret
= iwl_set_tx_power(priv
, priv
->tx_power_user_lmt
, true);
229 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
236 void iwl_update_chain_flags(struct iwl_priv
*priv
)
239 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
240 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
241 iwlcore_commit_rxon(priv
);
244 static void iwl_clear_free_frames(struct iwl_priv
*priv
)
246 struct list_head
*element
;
248 IWL_DEBUG_INFO(priv
, "%d frames on pre-allocated heap on clear.\n",
251 while (!list_empty(&priv
->free_frames
)) {
252 element
= priv
->free_frames
.next
;
254 kfree(list_entry(element
, struct iwl_frame
, list
));
255 priv
->frames_count
--;
258 if (priv
->frames_count
) {
259 IWL_WARN(priv
, "%d frames still in use. Did we lose one?\n",
261 priv
->frames_count
= 0;
265 static struct iwl_frame
*iwl_get_free_frame(struct iwl_priv
*priv
)
267 struct iwl_frame
*frame
;
268 struct list_head
*element
;
269 if (list_empty(&priv
->free_frames
)) {
270 frame
= kzalloc(sizeof(*frame
), GFP_KERNEL
);
272 IWL_ERR(priv
, "Could not allocate frame!\n");
276 priv
->frames_count
++;
280 element
= priv
->free_frames
.next
;
282 return list_entry(element
, struct iwl_frame
, list
);
285 static void iwl_free_frame(struct iwl_priv
*priv
, struct iwl_frame
*frame
)
287 memset(frame
, 0, sizeof(*frame
));
288 list_add(&frame
->list
, &priv
->free_frames
);
291 static u32
iwl_fill_beacon_frame(struct iwl_priv
*priv
,
292 struct ieee80211_hdr
*hdr
,
295 if (!iwl_is_associated(priv
) || !priv
->ibss_beacon
||
296 ((priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
) &&
297 (priv
->iw_mode
!= NL80211_IFTYPE_AP
)))
300 if (priv
->ibss_beacon
->len
> left
)
303 memcpy(hdr
, priv
->ibss_beacon
->data
, priv
->ibss_beacon
->len
);
305 return priv
->ibss_beacon
->len
;
308 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
309 static void iwl_set_beacon_tim(struct iwl_priv
*priv
,
310 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
,
311 u8
*beacon
, u32 frame_size
)
314 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
317 * The index is relative to frame start but we start looking at the
318 * variable-length part of the beacon.
320 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
322 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
323 while ((tim_idx
< (frame_size
- 2)) &&
324 (beacon
[tim_idx
] != WLAN_EID_TIM
))
325 tim_idx
+= beacon
[tim_idx
+1] + 2;
327 /* If TIM field was found, set variables */
328 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
329 tx_beacon_cmd
->tim_idx
= cpu_to_le16(tim_idx
);
330 tx_beacon_cmd
->tim_size
= beacon
[tim_idx
+1];
332 IWL_WARN(priv
, "Unable to find TIM Element in beacon\n");
335 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
336 struct iwl_frame
*frame
)
338 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
343 * We have to set up the TX command, the TX Beacon command, and the
347 /* Initialize memory */
348 tx_beacon_cmd
= &frame
->u
.beacon
;
349 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
351 /* Set up TX beacon contents */
352 frame_size
= iwl_fill_beacon_frame(priv
, tx_beacon_cmd
->frame
,
353 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
354 if (WARN_ON_ONCE(frame_size
> MAX_MPDU_SIZE
))
357 /* Set up TX command fields */
358 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
359 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
360 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
361 tx_beacon_cmd
->tx
.tx_flags
= TX_CMD_FLG_SEQ_CTL_MSK
|
362 TX_CMD_FLG_TSF_MSK
| TX_CMD_FLG_STA_RATE_MSK
;
364 /* Set up TX beacon command fields */
365 iwl_set_beacon_tim(priv
, tx_beacon_cmd
, (u8
*)tx_beacon_cmd
->frame
,
368 /* Set up packet rate and flags */
369 rate
= iwl_rate_get_lowest_plcp(priv
);
370 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
);
371 rate_flags
= iwl_ant_idx_to_flags(priv
->mgmt_tx_ant
);
372 if ((rate
>= IWL_FIRST_CCK_RATE
) && (rate
<= IWL_LAST_CCK_RATE
))
373 rate_flags
|= RATE_MCS_CCK_MSK
;
374 tx_beacon_cmd
->tx
.rate_n_flags
= iwl_hw_set_rate_n_flags(rate
,
377 return sizeof(*tx_beacon_cmd
) + frame_size
;
379 static int iwl_send_beacon_cmd(struct iwl_priv
*priv
)
381 struct iwl_frame
*frame
;
382 unsigned int frame_size
;
385 frame
= iwl_get_free_frame(priv
);
387 IWL_ERR(priv
, "Could not obtain free frame buffer for beacon "
392 frame_size
= iwl_hw_get_beacon_cmd(priv
, frame
);
394 IWL_ERR(priv
, "Error configuring the beacon command\n");
395 iwl_free_frame(priv
, frame
);
399 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_BEACON
, frame_size
,
402 iwl_free_frame(priv
, frame
);
407 static inline dma_addr_t
iwl_tfd_tb_get_addr(struct iwl_tfd
*tfd
, u8 idx
)
409 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
411 dma_addr_t addr
= get_unaligned_le32(&tb
->lo
);
412 if (sizeof(dma_addr_t
) > sizeof(u32
))
414 ((dma_addr_t
)(le16_to_cpu(tb
->hi_n_len
) & 0xF) << 16) << 16;
419 static inline u16
iwl_tfd_tb_get_len(struct iwl_tfd
*tfd
, u8 idx
)
421 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
423 return le16_to_cpu(tb
->hi_n_len
) >> 4;
426 static inline void iwl_tfd_set_tb(struct iwl_tfd
*tfd
, u8 idx
,
427 dma_addr_t addr
, u16 len
)
429 struct iwl_tfd_tb
*tb
= &tfd
->tbs
[idx
];
430 u16 hi_n_len
= len
<< 4;
432 put_unaligned_le32(addr
, &tb
->lo
);
433 if (sizeof(dma_addr_t
) > sizeof(u32
))
434 hi_n_len
|= ((addr
>> 16) >> 16) & 0xF;
436 tb
->hi_n_len
= cpu_to_le16(hi_n_len
);
438 tfd
->num_tbs
= idx
+ 1;
441 static inline u8
iwl_tfd_get_num_tbs(struct iwl_tfd
*tfd
)
443 return tfd
->num_tbs
& 0x1f;
447 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
448 * @priv - driver private data
451 * Does NOT advance any TFD circular buffer read/write indexes
452 * Does NOT free the TFD itself (which is within circular buffer)
454 void iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
456 struct iwl_tfd
*tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
458 struct pci_dev
*dev
= priv
->pci_dev
;
459 int index
= txq
->q
.read_ptr
;
463 tfd
= &tfd_tmp
[index
];
465 /* Sanity check on number of chunks */
466 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
468 if (num_tbs
>= IWL_NUM_OF_TBS
) {
469 IWL_ERR(priv
, "Too many chunks: %i\n", num_tbs
);
470 /* @todo issue fatal error, it is quite serious situation */
476 pci_unmap_single(dev
,
477 dma_unmap_addr(&txq
->meta
[index
], mapping
),
478 dma_unmap_len(&txq
->meta
[index
], len
),
479 PCI_DMA_BIDIRECTIONAL
);
481 /* Unmap chunks, if any. */
482 for (i
= 1; i
< num_tbs
; i
++) {
483 pci_unmap_single(dev
, iwl_tfd_tb_get_addr(tfd
, i
),
484 iwl_tfd_tb_get_len(tfd
, i
), PCI_DMA_TODEVICE
);
487 dev_kfree_skb(txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1]);
488 txq
->txb
[txq
->q
.read_ptr
].skb
[i
- 1] = NULL
;
493 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
494 struct iwl_tx_queue
*txq
,
495 dma_addr_t addr
, u16 len
,
499 struct iwl_tfd
*tfd
, *tfd_tmp
;
503 tfd_tmp
= (struct iwl_tfd
*)txq
->tfds
;
504 tfd
= &tfd_tmp
[q
->write_ptr
];
507 memset(tfd
, 0, sizeof(*tfd
));
509 num_tbs
= iwl_tfd_get_num_tbs(tfd
);
511 /* Each TFD can point to a maximum 20 Tx buffers */
512 if (num_tbs
>= IWL_NUM_OF_TBS
) {
513 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
518 BUG_ON(addr
& ~DMA_BIT_MASK(36));
519 if (unlikely(addr
& ~IWL_TX_DMA_MASK
))
520 IWL_ERR(priv
, "Unaligned address = %llx\n",
521 (unsigned long long)addr
);
523 iwl_tfd_set_tb(tfd
, num_tbs
, addr
, len
);
529 * Tell nic where to find circular buffer of Tx Frame Descriptors for
530 * given Tx queue, and enable the DMA channel used for that queue.
532 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
533 * channels supported in hardware.
535 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
,
536 struct iwl_tx_queue
*txq
)
538 int txq_id
= txq
->q
.id
;
540 /* Circular buffer (TFD queue in DRAM) physical base address */
541 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
542 txq
->q
.dma_addr
>> 8);
547 /******************************************************************************
549 * Generic RX handler implementations
551 ******************************************************************************/
552 static void iwl_rx_reply_alive(struct iwl_priv
*priv
,
553 struct iwl_rx_mem_buffer
*rxb
)
555 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
556 struct iwl_alive_resp
*palive
;
557 struct delayed_work
*pwork
;
559 palive
= &pkt
->u
.alive_frame
;
561 IWL_DEBUG_INFO(priv
, "Alive ucode status 0x%08X revision "
563 palive
->is_valid
, palive
->ver_type
,
564 palive
->ver_subtype
);
566 if (palive
->ver_subtype
== INITIALIZE_SUBTYPE
) {
567 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
568 memcpy(&priv
->card_alive_init
,
570 sizeof(struct iwl_init_alive_resp
));
571 pwork
= &priv
->init_alive_start
;
573 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
574 memcpy(&priv
->card_alive
, &pkt
->u
.alive_frame
,
575 sizeof(struct iwl_alive_resp
));
576 pwork
= &priv
->alive_start
;
579 /* We delay the ALIVE response by 5ms to
580 * give the HW RF Kill time to activate... */
581 if (palive
->is_valid
== UCODE_VALID_OK
)
582 queue_delayed_work(priv
->workqueue
, pwork
,
583 msecs_to_jiffies(5));
585 IWL_WARN(priv
, "uCode did not respond OK.\n");
588 static void iwl_bg_beacon_update(struct work_struct
*work
)
590 struct iwl_priv
*priv
=
591 container_of(work
, struct iwl_priv
, beacon_update
);
592 struct sk_buff
*beacon
;
594 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
595 beacon
= ieee80211_beacon_get(priv
->hw
, priv
->vif
);
598 IWL_ERR(priv
, "update beacon failed\n");
602 mutex_lock(&priv
->mutex
);
603 /* new beacon skb is allocated every time; dispose previous.*/
604 if (priv
->ibss_beacon
)
605 dev_kfree_skb(priv
->ibss_beacon
);
607 priv
->ibss_beacon
= beacon
;
608 mutex_unlock(&priv
->mutex
);
610 iwl_send_beacon_cmd(priv
);
614 * iwl_bg_statistics_periodic - Timer callback to queue statistics
616 * This callback is provided in order to send a statistics request.
618 * This timer function is continually reset to execute within
619 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
620 * was received. We need to ensure we receive the statistics in order
621 * to update the temperature used for calibrating the TXPOWER.
623 static void iwl_bg_statistics_periodic(unsigned long data
)
625 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
627 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
630 /* dont send host command if rf-kill is on */
631 if (!iwl_is_ready_rf(priv
))
634 iwl_send_statistics_request(priv
, CMD_ASYNC
, false);
638 static void iwl_print_cont_event_trace(struct iwl_priv
*priv
, u32 base
,
639 u32 start_idx
, u32 num_events
,
643 u32 ptr
; /* SRAM byte address of log data */
644 u32 ev
, time
, data
; /* event log data */
645 unsigned long reg_flags
;
648 ptr
= base
+ (4 * sizeof(u32
)) + (start_idx
* 2 * sizeof(u32
));
650 ptr
= base
+ (4 * sizeof(u32
)) + (start_idx
* 3 * sizeof(u32
));
652 /* Make sure device is powered up for SRAM reads */
653 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
654 if (iwl_grab_nic_access(priv
)) {
655 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
659 /* Set starting address; reads will auto-increment */
660 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
664 * "time" is actually "data" for mode 0 (no timestamp).
665 * place event id # at far right for easier visual parsing.
667 for (i
= 0; i
< num_events
; i
++) {
668 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
669 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
671 trace_iwlwifi_dev_ucode_cont_event(priv
,
674 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
675 trace_iwlwifi_dev_ucode_cont_event(priv
,
679 /* Allow device to power down */
680 iwl_release_nic_access(priv
);
681 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
684 static void iwl_continuous_event_trace(struct iwl_priv
*priv
)
686 u32 capacity
; /* event log capacity in # entries */
687 u32 base
; /* SRAM byte address of event log header */
688 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
689 u32 num_wraps
; /* # times uCode wrapped to top of log */
690 u32 next_entry
; /* index of next entry to be written by uCode */
692 if (priv
->ucode_type
== UCODE_INIT
)
693 base
= le32_to_cpu(priv
->card_alive_init
.error_event_table_ptr
);
695 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
696 if (priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
697 capacity
= iwl_read_targ_mem(priv
, base
);
698 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
699 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
700 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
704 if (num_wraps
== priv
->event_log
.num_wraps
) {
705 iwl_print_cont_event_trace(priv
,
706 base
, priv
->event_log
.next_entry
,
707 next_entry
- priv
->event_log
.next_entry
,
709 priv
->event_log
.non_wraps_count
++;
711 if ((num_wraps
- priv
->event_log
.num_wraps
) > 1)
712 priv
->event_log
.wraps_more_count
++;
714 priv
->event_log
.wraps_once_count
++;
715 trace_iwlwifi_dev_ucode_wrap_event(priv
,
716 num_wraps
- priv
->event_log
.num_wraps
,
717 next_entry
, priv
->event_log
.next_entry
);
718 if (next_entry
< priv
->event_log
.next_entry
) {
719 iwl_print_cont_event_trace(priv
, base
,
720 priv
->event_log
.next_entry
,
721 capacity
- priv
->event_log
.next_entry
,
724 iwl_print_cont_event_trace(priv
, base
, 0,
727 iwl_print_cont_event_trace(priv
, base
,
728 next_entry
, capacity
- next_entry
,
731 iwl_print_cont_event_trace(priv
, base
, 0,
735 priv
->event_log
.num_wraps
= num_wraps
;
736 priv
->event_log
.next_entry
= next_entry
;
740 * iwl_bg_ucode_trace - Timer callback to log ucode event
742 * The timer is continually set to execute every
743 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
744 * this function is to perform continuous uCode event logging operation
747 static void iwl_bg_ucode_trace(unsigned long data
)
749 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
751 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
754 if (priv
->event_log
.ucode_trace
) {
755 iwl_continuous_event_trace(priv
);
756 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
757 mod_timer(&priv
->ucode_trace
,
758 jiffies
+ msecs_to_jiffies(UCODE_TRACE_PERIOD
));
762 static void iwl_rx_beacon_notif(struct iwl_priv
*priv
,
763 struct iwl_rx_mem_buffer
*rxb
)
765 #ifdef CONFIG_IWLWIFI_DEBUG
766 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
767 struct iwl4965_beacon_notif
*beacon
=
768 (struct iwl4965_beacon_notif
*)pkt
->u
.raw
;
769 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
771 IWL_DEBUG_RX(priv
, "beacon status %x retries %d iss %d "
772 "tsf %d %d rate %d\n",
773 le32_to_cpu(beacon
->beacon_notify_hdr
.u
.status
) & TX_STATUS_MSK
,
774 beacon
->beacon_notify_hdr
.failure_frame
,
775 le32_to_cpu(beacon
->ibss_mgr_status
),
776 le32_to_cpu(beacon
->high_tsf
),
777 le32_to_cpu(beacon
->low_tsf
), rate
);
780 if ((priv
->iw_mode
== NL80211_IFTYPE_AP
) &&
781 (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
)))
782 queue_work(priv
->workqueue
, &priv
->beacon_update
);
785 /* Handle notification from uCode that card's power state is changing
786 * due to software, hardware, or critical temperature RFKILL */
787 static void iwl_rx_card_state_notif(struct iwl_priv
*priv
,
788 struct iwl_rx_mem_buffer
*rxb
)
790 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
791 u32 flags
= le32_to_cpu(pkt
->u
.card_state_notif
.flags
);
792 unsigned long status
= priv
->status
;
794 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s CT:%s\n",
795 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
796 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On",
797 (flags
& CT_CARD_DISABLED
) ?
798 "Reached" : "Not reached");
800 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
803 iwl_write32(priv
, CSR_UCODE_DRV_GP1_SET
,
804 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
806 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
807 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
809 if (!(flags
& RXON_CARD_DISABLED
)) {
810 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
811 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
812 iwl_write_direct32(priv
, HBUS_TARG_MBX_C
,
813 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
815 if (flags
& CT_CARD_DISABLED
)
816 iwl_tt_enter_ct_kill(priv
);
818 if (!(flags
& CT_CARD_DISABLED
))
819 iwl_tt_exit_ct_kill(priv
);
821 if (flags
& HW_CARD_DISABLED
)
822 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
824 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
827 if (!(flags
& RXON_CARD_DISABLED
))
828 iwl_scan_cancel(priv
);
830 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
831 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
832 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
833 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
835 wake_up_interruptible(&priv
->wait_command_queue
);
838 int iwl_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
840 if (src
== IWL_PWR_SRC_VAUX
) {
841 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
))
842 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
843 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
844 ~APMG_PS_CTRL_MSK_PWR_SRC
);
846 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
847 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
848 ~APMG_PS_CTRL_MSK_PWR_SRC
);
855 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
857 * Setup the RX handlers for each of the reply types sent from the uCode
860 * This function chains into the hardware specific files for them to setup
861 * any hardware specific handlers as well.
863 static void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
865 priv
->rx_handlers
[REPLY_ALIVE
] = iwl_rx_reply_alive
;
866 priv
->rx_handlers
[REPLY_ERROR
] = iwl_rx_reply_error
;
867 priv
->rx_handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwl_rx_csa
;
868 priv
->rx_handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
869 iwl_rx_spectrum_measure_notif
;
870 priv
->rx_handlers
[PM_SLEEP_NOTIFICATION
] = iwl_rx_pm_sleep_notif
;
871 priv
->rx_handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
872 iwl_rx_pm_debug_statistics_notif
;
873 priv
->rx_handlers
[BEACON_NOTIFICATION
] = iwl_rx_beacon_notif
;
876 * The same handler is used for both the REPLY to a discrete
877 * statistics request from the host as well as for the periodic
878 * statistics notifications (after received beacons) from the uCode.
880 priv
->rx_handlers
[REPLY_STATISTICS_CMD
] = iwl_reply_statistics
;
881 priv
->rx_handlers
[STATISTICS_NOTIFICATION
] = iwl_rx_statistics
;
883 iwl_setup_rx_scan_handlers(priv
);
885 /* status change handler */
886 priv
->rx_handlers
[CARD_STATE_NOTIFICATION
] = iwl_rx_card_state_notif
;
888 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
889 iwl_rx_missed_beacon_notif
;
891 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwlagn_rx_reply_rx_phy
;
892 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwlagn_rx_reply_rx
;
894 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwlagn_rx_reply_compressed_ba
;
895 /* Set up hardware specific Rx handlers */
896 priv
->cfg
->ops
->lib
->rx_handler_setup(priv
);
900 * iwl_rx_handle - Main entry function for receiving responses from uCode
902 * Uses the priv->rx_handlers callback function array to invoke
903 * the appropriate handlers, including command responses,
904 * frame-received notifications, and other notifications.
906 void iwl_rx_handle(struct iwl_priv
*priv
)
908 struct iwl_rx_mem_buffer
*rxb
;
909 struct iwl_rx_packet
*pkt
;
910 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
918 /* uCode's read index (stored in shared DRAM) indicates the last Rx
919 * buffer that the driver may process (last buffer filled by ucode). */
920 r
= le16_to_cpu(rxq
->rb_stts
->closed_rb_num
) & 0x0FFF;
923 /* Rx interrupt, but nothing sent from uCode */
925 IWL_DEBUG_RX(priv
, "r = %d, i = %d\n", r
, i
);
927 /* calculate total frames need to be restock after handling RX */
928 total_empty
= r
- rxq
->write_actual
;
930 total_empty
+= RX_QUEUE_SIZE
;
932 if (total_empty
> (RX_QUEUE_SIZE
/ 2))
938 /* If an RXB doesn't have a Rx queue slot associated with it,
939 * then a bug has been introduced in the queue refilling
940 * routines -- catch it here */
943 rxq
->queue
[i
] = NULL
;
945 pci_unmap_page(priv
->pci_dev
, rxb
->page_dma
,
946 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
950 trace_iwlwifi_dev_rx(priv
, pkt
,
951 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
953 /* Reclaim a command buffer only if this packet is a response
954 * to a (driver-originated) command.
955 * If the packet (e.g. Rx frame) originated from uCode,
956 * there is no command buffer to reclaim.
957 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
958 * but apparently a few don't get set; catch them here. */
959 reclaim
= !(pkt
->hdr
.sequence
& SEQ_RX_FRAME
) &&
960 (pkt
->hdr
.cmd
!= REPLY_RX_PHY_CMD
) &&
961 (pkt
->hdr
.cmd
!= REPLY_RX
) &&
962 (pkt
->hdr
.cmd
!= REPLY_RX_MPDU_CMD
) &&
963 (pkt
->hdr
.cmd
!= REPLY_COMPRESSED_BA
) &&
964 (pkt
->hdr
.cmd
!= STATISTICS_NOTIFICATION
) &&
965 (pkt
->hdr
.cmd
!= REPLY_TX
);
967 /* Based on type of command response or notification,
968 * handle those that need handling via function in
969 * rx_handlers table. See iwl_setup_rx_handlers() */
970 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
971 IWL_DEBUG_RX(priv
, "r = %d, i = %d, %s, 0x%02x\n", r
,
972 i
, get_cmd_string(pkt
->hdr
.cmd
), pkt
->hdr
.cmd
);
973 priv
->isr_stats
.rx_handlers
[pkt
->hdr
.cmd
]++;
974 priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
);
976 /* No handling needed */
978 "r %d i %d No handler needed for %s, 0x%02x\n",
979 r
, i
, get_cmd_string(pkt
->hdr
.cmd
),
984 * XXX: After here, we should always check rxb->page
985 * against NULL before touching it or its virtual
986 * memory (pkt). Because some rx_handler might have
987 * already taken or freed the pages.
991 /* Invoke any callbacks, transfer the buffer to caller,
992 * and fire off the (possibly) blocking iwl_send_cmd()
993 * as we reclaim the driver command queue */
995 iwl_tx_cmd_complete(priv
, rxb
);
997 IWL_WARN(priv
, "Claim null rxb?\n");
1000 /* Reuse the page if possible. For notification packets and
1001 * SKBs that fail to Rx correctly, add them back into the
1002 * rx_free list for reuse later. */
1003 spin_lock_irqsave(&rxq
->lock
, flags
);
1004 if (rxb
->page
!= NULL
) {
1005 rxb
->page_dma
= pci_map_page(priv
->pci_dev
, rxb
->page
,
1006 0, PAGE_SIZE
<< priv
->hw_params
.rx_page_order
,
1007 PCI_DMA_FROMDEVICE
);
1008 list_add_tail(&rxb
->list
, &rxq
->rx_free
);
1011 list_add_tail(&rxb
->list
, &rxq
->rx_used
);
1013 spin_unlock_irqrestore(&rxq
->lock
, flags
);
1015 i
= (i
+ 1) & RX_QUEUE_MASK
;
1016 /* If there are a lot of unused frames,
1017 * restock the Rx queue so ucode wont assert. */
1022 iwlagn_rx_replenish_now(priv
);
1028 /* Backtrack one entry */
1031 iwlagn_rx_replenish_now(priv
);
1033 iwlagn_rx_queue_restock(priv
);
1036 /* call this function to flush any scheduled tasklet */
1037 static inline void iwl_synchronize_irq(struct iwl_priv
*priv
)
1039 /* wait to make sure we flush pending tasklet*/
1040 synchronize_irq(priv
->pci_dev
->irq
);
1041 tasklet_kill(&priv
->irq_tasklet
);
1044 static void iwl_irq_tasklet_legacy(struct iwl_priv
*priv
)
1046 u32 inta
, handled
= 0;
1048 unsigned long flags
;
1050 #ifdef CONFIG_IWLWIFI_DEBUG
1054 spin_lock_irqsave(&priv
->lock
, flags
);
1056 /* Ack/clear/reset pending uCode interrupts.
1057 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1058 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1059 inta
= iwl_read32(priv
, CSR_INT
);
1060 iwl_write32(priv
, CSR_INT
, inta
);
1062 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1063 * Any new interrupts that happen after this, either while we're
1064 * in this tasklet, or later, will show up in next ISR/tasklet. */
1065 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1066 iwl_write32(priv
, CSR_FH_INT_STATUS
, inta_fh
);
1068 #ifdef CONFIG_IWLWIFI_DEBUG
1069 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1070 /* just for debug */
1071 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1072 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1073 inta
, inta_mask
, inta_fh
);
1077 spin_unlock_irqrestore(&priv
->lock
, flags
);
1079 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1080 * atomic, make sure that inta covers all the interrupts that
1081 * we've discovered, even if FH interrupt came in just after
1082 * reading CSR_INT. */
1083 if (inta_fh
& CSR49_FH_INT_RX_MASK
)
1084 inta
|= CSR_INT_BIT_FH_RX
;
1085 if (inta_fh
& CSR49_FH_INT_TX_MASK
)
1086 inta
|= CSR_INT_BIT_FH_TX
;
1088 /* Now service all interrupt bits discovered above. */
1089 if (inta
& CSR_INT_BIT_HW_ERR
) {
1090 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1092 /* Tell the device to stop sending interrupts */
1093 iwl_disable_interrupts(priv
);
1095 priv
->isr_stats
.hw
++;
1096 iwl_irq_handle_error(priv
);
1098 handled
|= CSR_INT_BIT_HW_ERR
;
1103 #ifdef CONFIG_IWLWIFI_DEBUG
1104 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1105 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1106 if (inta
& CSR_INT_BIT_SCD
) {
1107 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1108 "the frame/frames.\n");
1109 priv
->isr_stats
.sch
++;
1112 /* Alive notification via Rx interrupt will do the real work */
1113 if (inta
& CSR_INT_BIT_ALIVE
) {
1114 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1115 priv
->isr_stats
.alive
++;
1119 /* Safely ignore these bits for debug checks below */
1120 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1122 /* HW RF KILL switch toggled */
1123 if (inta
& CSR_INT_BIT_RF_KILL
) {
1125 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1126 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1129 IWL_WARN(priv
, "RF_KILL bit toggled to %s.\n",
1130 hw_rf_kill
? "disable radio" : "enable radio");
1132 priv
->isr_stats
.rfkill
++;
1134 /* driver only loads ucode once setting the interface up.
1135 * the driver allows loading the ucode even if the radio
1136 * is killed. Hence update the killswitch state here. The
1137 * rfkill handler will care about restarting if needed.
1139 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1141 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1143 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1144 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1147 handled
|= CSR_INT_BIT_RF_KILL
;
1150 /* Chip got too hot and stopped itself */
1151 if (inta
& CSR_INT_BIT_CT_KILL
) {
1152 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1153 priv
->isr_stats
.ctkill
++;
1154 handled
|= CSR_INT_BIT_CT_KILL
;
1157 /* Error detected by uCode */
1158 if (inta
& CSR_INT_BIT_SW_ERR
) {
1159 IWL_ERR(priv
, "Microcode SW error detected. "
1160 " Restarting 0x%X.\n", inta
);
1161 priv
->isr_stats
.sw
++;
1162 priv
->isr_stats
.sw_err
= inta
;
1163 iwl_irq_handle_error(priv
);
1164 handled
|= CSR_INT_BIT_SW_ERR
;
1168 * uCode wakes up after power-down sleep.
1169 * Tell device about any new tx or host commands enqueued,
1170 * and about any Rx buffers made available while asleep.
1172 if (inta
& CSR_INT_BIT_WAKEUP
) {
1173 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1174 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1175 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++)
1176 iwl_txq_update_write_ptr(priv
, &priv
->txq
[i
]);
1177 priv
->isr_stats
.wakeup
++;
1178 handled
|= CSR_INT_BIT_WAKEUP
;
1181 /* All uCode command responses, including Tx command responses,
1182 * Rx "responses" (frame-received notification), and other
1183 * notifications from uCode come through here*/
1184 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1185 iwl_rx_handle(priv
);
1186 priv
->isr_stats
.rx
++;
1187 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1190 /* This "Tx" DMA channel is used only for loading uCode */
1191 if (inta
& CSR_INT_BIT_FH_TX
) {
1192 IWL_DEBUG_ISR(priv
, "uCode load interrupt\n");
1193 priv
->isr_stats
.tx
++;
1194 handled
|= CSR_INT_BIT_FH_TX
;
1195 /* Wake up uCode load routine, now that load is complete */
1196 priv
->ucode_write_complete
= 1;
1197 wake_up_interruptible(&priv
->wait_command_queue
);
1200 if (inta
& ~handled
) {
1201 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1202 priv
->isr_stats
.unhandled
++;
1205 if (inta
& ~(priv
->inta_mask
)) {
1206 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1207 inta
& ~priv
->inta_mask
);
1208 IWL_WARN(priv
, " with FH_INT = 0x%08x\n", inta_fh
);
1211 /* Re-enable all interrupts */
1212 /* only Re-enable if diabled by irq */
1213 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1214 iwl_enable_interrupts(priv
);
1216 #ifdef CONFIG_IWLWIFI_DEBUG
1217 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1218 inta
= iwl_read32(priv
, CSR_INT
);
1219 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1220 inta_fh
= iwl_read32(priv
, CSR_FH_INT_STATUS
);
1221 IWL_DEBUG_ISR(priv
, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1222 "flags 0x%08lx\n", inta
, inta_mask
, inta_fh
, flags
);
1227 /* tasklet for iwlagn interrupt */
1228 static void iwl_irq_tasklet(struct iwl_priv
*priv
)
1232 unsigned long flags
;
1234 #ifdef CONFIG_IWLWIFI_DEBUG
1238 spin_lock_irqsave(&priv
->lock
, flags
);
1240 /* Ack/clear/reset pending uCode interrupts.
1241 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1243 /* There is a hardware bug in the interrupt mask function that some
1244 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1245 * they are disabled in the CSR_INT_MASK register. Furthermore the
1246 * ICT interrupt handling mechanism has another bug that might cause
1247 * these unmasked interrupts fail to be detected. We workaround the
1248 * hardware bugs here by ACKing all the possible interrupts so that
1249 * interrupt coalescing can still be achieved.
1251 iwl_write32(priv
, CSR_INT
, priv
->_agn
.inta
| ~priv
->inta_mask
);
1253 inta
= priv
->_agn
.inta
;
1255 #ifdef CONFIG_IWLWIFI_DEBUG
1256 if (iwl_get_debug_level(priv
) & IWL_DL_ISR
) {
1257 /* just for debug */
1258 inta_mask
= iwl_read32(priv
, CSR_INT_MASK
);
1259 IWL_DEBUG_ISR(priv
, "inta 0x%08x, enabled 0x%08x\n ",
1264 spin_unlock_irqrestore(&priv
->lock
, flags
);
1266 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1267 priv
->_agn
.inta
= 0;
1269 /* Now service all interrupt bits discovered above. */
1270 if (inta
& CSR_INT_BIT_HW_ERR
) {
1271 IWL_ERR(priv
, "Hardware error detected. Restarting.\n");
1273 /* Tell the device to stop sending interrupts */
1274 iwl_disable_interrupts(priv
);
1276 priv
->isr_stats
.hw
++;
1277 iwl_irq_handle_error(priv
);
1279 handled
|= CSR_INT_BIT_HW_ERR
;
1284 #ifdef CONFIG_IWLWIFI_DEBUG
1285 if (iwl_get_debug_level(priv
) & (IWL_DL_ISR
)) {
1286 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1287 if (inta
& CSR_INT_BIT_SCD
) {
1288 IWL_DEBUG_ISR(priv
, "Scheduler finished to transmit "
1289 "the frame/frames.\n");
1290 priv
->isr_stats
.sch
++;
1293 /* Alive notification via Rx interrupt will do the real work */
1294 if (inta
& CSR_INT_BIT_ALIVE
) {
1295 IWL_DEBUG_ISR(priv
, "Alive interrupt\n");
1296 priv
->isr_stats
.alive
++;
1300 /* Safely ignore these bits for debug checks below */
1301 inta
&= ~(CSR_INT_BIT_SCD
| CSR_INT_BIT_ALIVE
);
1303 /* HW RF KILL switch toggled */
1304 if (inta
& CSR_INT_BIT_RF_KILL
) {
1306 if (!(iwl_read32(priv
, CSR_GP_CNTRL
) &
1307 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
))
1310 IWL_WARN(priv
, "RF_KILL bit toggled to %s.\n",
1311 hw_rf_kill
? "disable radio" : "enable radio");
1313 priv
->isr_stats
.rfkill
++;
1315 /* driver only loads ucode once setting the interface up.
1316 * the driver allows loading the ucode even if the radio
1317 * is killed. Hence update the killswitch state here. The
1318 * rfkill handler will care about restarting if needed.
1320 if (!test_bit(STATUS_ALIVE
, &priv
->status
)) {
1322 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1324 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
1325 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, hw_rf_kill
);
1328 handled
|= CSR_INT_BIT_RF_KILL
;
1331 /* Chip got too hot and stopped itself */
1332 if (inta
& CSR_INT_BIT_CT_KILL
) {
1333 IWL_ERR(priv
, "Microcode CT kill error detected.\n");
1334 priv
->isr_stats
.ctkill
++;
1335 handled
|= CSR_INT_BIT_CT_KILL
;
1338 /* Error detected by uCode */
1339 if (inta
& CSR_INT_BIT_SW_ERR
) {
1340 IWL_ERR(priv
, "Microcode SW error detected. "
1341 " Restarting 0x%X.\n", inta
);
1342 priv
->isr_stats
.sw
++;
1343 priv
->isr_stats
.sw_err
= inta
;
1344 iwl_irq_handle_error(priv
);
1345 handled
|= CSR_INT_BIT_SW_ERR
;
1348 /* uCode wakes up after power-down sleep */
1349 if (inta
& CSR_INT_BIT_WAKEUP
) {
1350 IWL_DEBUG_ISR(priv
, "Wakeup interrupt\n");
1351 iwl_rx_queue_update_write_ptr(priv
, &priv
->rxq
);
1352 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++)
1353 iwl_txq_update_write_ptr(priv
, &priv
->txq
[i
]);
1355 priv
->isr_stats
.wakeup
++;
1357 handled
|= CSR_INT_BIT_WAKEUP
;
1360 /* All uCode command responses, including Tx command responses,
1361 * Rx "responses" (frame-received notification), and other
1362 * notifications from uCode come through here*/
1363 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
|
1364 CSR_INT_BIT_RX_PERIODIC
)) {
1365 IWL_DEBUG_ISR(priv
, "Rx interrupt\n");
1366 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
)) {
1367 handled
|= (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
);
1368 iwl_write32(priv
, CSR_FH_INT_STATUS
,
1369 CSR49_FH_INT_RX_MASK
);
1371 if (inta
& CSR_INT_BIT_RX_PERIODIC
) {
1372 handled
|= CSR_INT_BIT_RX_PERIODIC
;
1373 iwl_write32(priv
, CSR_INT
, CSR_INT_BIT_RX_PERIODIC
);
1375 /* Sending RX interrupt require many steps to be done in the
1377 * 1- write interrupt to current index in ICT table.
1379 * 3- update RX shared data to indicate last write index.
1380 * 4- send interrupt.
1381 * This could lead to RX race, driver could receive RX interrupt
1382 * but the shared data changes does not reflect this;
1383 * periodic interrupt will detect any dangling Rx activity.
1386 /* Disable periodic interrupt; we use it as just a one-shot. */
1387 iwl_write8(priv
, CSR_INT_PERIODIC_REG
,
1388 CSR_INT_PERIODIC_DIS
);
1389 iwl_rx_handle(priv
);
1392 * Enable periodic interrupt in 8 msec only if we received
1393 * real RX interrupt (instead of just periodic int), to catch
1394 * any dangling Rx interrupt. If it was just the periodic
1395 * interrupt, there was no dangling Rx activity, and no need
1396 * to extend the periodic interrupt; one-shot is enough.
1398 if (inta
& (CSR_INT_BIT_FH_RX
| CSR_INT_BIT_SW_RX
))
1399 iwl_write8(priv
, CSR_INT_PERIODIC_REG
,
1400 CSR_INT_PERIODIC_ENA
);
1402 priv
->isr_stats
.rx
++;
1405 /* This "Tx" DMA channel is used only for loading uCode */
1406 if (inta
& CSR_INT_BIT_FH_TX
) {
1407 iwl_write32(priv
, CSR_FH_INT_STATUS
, CSR49_FH_INT_TX_MASK
);
1408 IWL_DEBUG_ISR(priv
, "uCode load interrupt\n");
1409 priv
->isr_stats
.tx
++;
1410 handled
|= CSR_INT_BIT_FH_TX
;
1411 /* Wake up uCode load routine, now that load is complete */
1412 priv
->ucode_write_complete
= 1;
1413 wake_up_interruptible(&priv
->wait_command_queue
);
1416 if (inta
& ~handled
) {
1417 IWL_ERR(priv
, "Unhandled INTA bits 0x%08x\n", inta
& ~handled
);
1418 priv
->isr_stats
.unhandled
++;
1421 if (inta
& ~(priv
->inta_mask
)) {
1422 IWL_WARN(priv
, "Disabled INTA bits 0x%08x were pending\n",
1423 inta
& ~priv
->inta_mask
);
1426 /* Re-enable all interrupts */
1427 /* only Re-enable if diabled by irq */
1428 if (test_bit(STATUS_INT_ENABLED
, &priv
->status
))
1429 iwl_enable_interrupts(priv
);
1432 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1433 #define ACK_CNT_RATIO (50)
1434 #define BA_TIMEOUT_CNT (5)
1435 #define BA_TIMEOUT_MAX (16)
1438 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1440 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1441 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1444 bool iwl_good_ack_health(struct iwl_priv
*priv
,
1445 struct iwl_rx_packet
*pkt
)
1448 int actual_ack_cnt_delta
, expected_ack_cnt_delta
;
1449 int ba_timeout_delta
;
1451 actual_ack_cnt_delta
=
1452 le32_to_cpu(pkt
->u
.stats
.tx
.actual_ack_cnt
) -
1453 le32_to_cpu(priv
->statistics
.tx
.actual_ack_cnt
);
1454 expected_ack_cnt_delta
=
1455 le32_to_cpu(pkt
->u
.stats
.tx
.expected_ack_cnt
) -
1456 le32_to_cpu(priv
->statistics
.tx
.expected_ack_cnt
);
1458 le32_to_cpu(pkt
->u
.stats
.tx
.agg
.ba_timeout
) -
1459 le32_to_cpu(priv
->statistics
.tx
.agg
.ba_timeout
);
1460 if ((priv
->_agn
.agg_tids_count
> 0) &&
1461 (expected_ack_cnt_delta
> 0) &&
1462 (((actual_ack_cnt_delta
* 100) / expected_ack_cnt_delta
)
1464 (ba_timeout_delta
> BA_TIMEOUT_CNT
)) {
1465 IWL_DEBUG_RADIO(priv
, "actual_ack_cnt delta = %d,"
1466 " expected_ack_cnt = %d\n",
1467 actual_ack_cnt_delta
, expected_ack_cnt_delta
);
1469 #ifdef CONFIG_IWLWIFI_DEBUGFS
1471 * This is ifdef'ed on DEBUGFS because otherwise the
1472 * statistics aren't available. If DEBUGFS is set but
1473 * DEBUG is not, these will just compile out.
1475 IWL_DEBUG_RADIO(priv
, "rx_detected_cnt delta = %d\n",
1476 priv
->delta_statistics
.tx
.rx_detected_cnt
);
1477 IWL_DEBUG_RADIO(priv
,
1478 "ack_or_ba_timeout_collision delta = %d\n",
1479 priv
->delta_statistics
.tx
.
1480 ack_or_ba_timeout_collision
);
1482 IWL_DEBUG_RADIO(priv
, "agg ba_timeout delta = %d\n",
1484 if (!actual_ack_cnt_delta
&&
1485 (ba_timeout_delta
>= BA_TIMEOUT_MAX
))
1492 /******************************************************************************
1494 * uCode download functions
1496 ******************************************************************************/
1498 static void iwl_dealloc_ucode_pci(struct iwl_priv
*priv
)
1500 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1501 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1502 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1503 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1504 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1505 iwl_free_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1508 static void iwl_nic_start(struct iwl_priv
*priv
)
1510 /* Remove all resets to allow NIC to operate */
1511 iwl_write32(priv
, CSR_RESET
, 0);
1514 struct iwlagn_ucode_capabilities
{
1515 u32 max_probe_length
;
1518 static void iwl_ucode_callback(const struct firmware
*ucode_raw
, void *context
);
1519 static int iwl_mac_setup_register(struct iwl_priv
*priv
,
1520 struct iwlagn_ucode_capabilities
*capa
);
1522 static int __must_check
iwl_request_firmware(struct iwl_priv
*priv
, bool first
)
1524 const char *name_pre
= priv
->cfg
->fw_name_pre
;
1527 priv
->fw_index
= priv
->cfg
->ucode_api_max
;
1531 if (priv
->fw_index
< priv
->cfg
->ucode_api_min
) {
1532 IWL_ERR(priv
, "no suitable firmware found!\n");
1536 sprintf(priv
->firmware_name
, "%s%d%s",
1537 name_pre
, priv
->fw_index
, ".ucode");
1539 IWL_DEBUG_INFO(priv
, "attempting to load firmware '%s'\n",
1540 priv
->firmware_name
);
1542 return request_firmware_nowait(THIS_MODULE
, 1, priv
->firmware_name
,
1543 &priv
->pci_dev
->dev
, GFP_KERNEL
, priv
,
1544 iwl_ucode_callback
);
1547 struct iwlagn_firmware_pieces
{
1548 const void *inst
, *data
, *init
, *init_data
, *boot
;
1549 size_t inst_size
, data_size
, init_size
, init_data_size
, boot_size
;
1553 u32 init_evtlog_ptr
, init_evtlog_size
, init_errlog_ptr
;
1554 u32 inst_evtlog_ptr
, inst_evtlog_size
, inst_errlog_ptr
;
1557 static int iwlagn_load_legacy_firmware(struct iwl_priv
*priv
,
1558 const struct firmware
*ucode_raw
,
1559 struct iwlagn_firmware_pieces
*pieces
)
1561 struct iwl_ucode_header
*ucode
= (void *)ucode_raw
->data
;
1562 u32 api_ver
, hdr_size
;
1565 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1566 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1571 * 4965 doesn't revision the firmware file format
1572 * along with the API version, it always uses v1
1575 if ((priv
->hw_rev
& CSR_HW_REV_TYPE_MSK
) !=
1576 CSR_HW_REV_TYPE_4965
) {
1578 if (ucode_raw
->size
< hdr_size
) {
1579 IWL_ERR(priv
, "File size too small!\n");
1582 pieces
->build
= le32_to_cpu(ucode
->u
.v2
.build
);
1583 pieces
->inst_size
= le32_to_cpu(ucode
->u
.v2
.inst_size
);
1584 pieces
->data_size
= le32_to_cpu(ucode
->u
.v2
.data_size
);
1585 pieces
->init_size
= le32_to_cpu(ucode
->u
.v2
.init_size
);
1586 pieces
->init_data_size
= le32_to_cpu(ucode
->u
.v2
.init_data_size
);
1587 pieces
->boot_size
= le32_to_cpu(ucode
->u
.v2
.boot_size
);
1588 src
= ucode
->u
.v2
.data
;
1591 /* fall through for 4965 */
1596 if (ucode_raw
->size
< hdr_size
) {
1597 IWL_ERR(priv
, "File size too small!\n");
1601 pieces
->inst_size
= le32_to_cpu(ucode
->u
.v1
.inst_size
);
1602 pieces
->data_size
= le32_to_cpu(ucode
->u
.v1
.data_size
);
1603 pieces
->init_size
= le32_to_cpu(ucode
->u
.v1
.init_size
);
1604 pieces
->init_data_size
= le32_to_cpu(ucode
->u
.v1
.init_data_size
);
1605 pieces
->boot_size
= le32_to_cpu(ucode
->u
.v1
.boot_size
);
1606 src
= ucode
->u
.v1
.data
;
1610 /* Verify size of file vs. image size info in file's header */
1611 if (ucode_raw
->size
!= hdr_size
+ pieces
->inst_size
+
1612 pieces
->data_size
+ pieces
->init_size
+
1613 pieces
->init_data_size
+ pieces
->boot_size
) {
1616 "uCode file size %d does not match expected size\n",
1617 (int)ucode_raw
->size
);
1622 src
+= pieces
->inst_size
;
1624 src
+= pieces
->data_size
;
1626 src
+= pieces
->init_size
;
1627 pieces
->init_data
= src
;
1628 src
+= pieces
->init_data_size
;
1630 src
+= pieces
->boot_size
;
1635 static int iwlagn_wanted_ucode_alternative
= 1;
1637 static int iwlagn_load_firmware(struct iwl_priv
*priv
,
1638 const struct firmware
*ucode_raw
,
1639 struct iwlagn_firmware_pieces
*pieces
,
1640 struct iwlagn_ucode_capabilities
*capa
)
1642 struct iwl_tlv_ucode_header
*ucode
= (void *)ucode_raw
->data
;
1643 struct iwl_ucode_tlv
*tlv
;
1644 size_t len
= ucode_raw
->size
;
1646 int wanted_alternative
= iwlagn_wanted_ucode_alternative
, tmp
;
1649 if (len
< sizeof(*ucode
))
1652 if (ucode
->magic
!= cpu_to_le32(IWL_TLV_UCODE_MAGIC
))
1656 * Check which alternatives are present, and "downgrade"
1657 * when the chosen alternative is not present, warning
1658 * the user when that happens. Some files may not have
1659 * any alternatives, so don't warn in that case.
1661 alternatives
= le64_to_cpu(ucode
->alternatives
);
1662 tmp
= wanted_alternative
;
1663 if (wanted_alternative
> 63)
1664 wanted_alternative
= 63;
1665 while (wanted_alternative
&& !(alternatives
& BIT(wanted_alternative
)))
1666 wanted_alternative
--;
1667 if (wanted_alternative
&& wanted_alternative
!= tmp
)
1669 "uCode alternative %d not available, choosing %d\n",
1670 tmp
, wanted_alternative
);
1672 priv
->ucode_ver
= le32_to_cpu(ucode
->ver
);
1673 pieces
->build
= le32_to_cpu(ucode
->build
);
1676 len
-= sizeof(*ucode
);
1678 while (len
>= sizeof(*tlv
)) {
1680 enum iwl_ucode_tlv_type tlv_type
;
1684 len
-= sizeof(*tlv
);
1687 tlv_len
= le32_to_cpu(tlv
->length
);
1688 tlv_type
= le16_to_cpu(tlv
->type
);
1689 tlv_alt
= le16_to_cpu(tlv
->alternative
);
1690 tlv_data
= tlv
->data
;
1694 len
-= ALIGN(tlv_len
, 4);
1695 data
+= sizeof(*tlv
) + ALIGN(tlv_len
, 4);
1698 * Alternative 0 is always valid.
1700 * Skip alternative TLVs that are not selected.
1702 if (tlv_alt
!= 0 && tlv_alt
!= wanted_alternative
)
1706 case IWL_UCODE_TLV_INST
:
1707 pieces
->inst
= tlv_data
;
1708 pieces
->inst_size
= tlv_len
;
1710 case IWL_UCODE_TLV_DATA
:
1711 pieces
->data
= tlv_data
;
1712 pieces
->data_size
= tlv_len
;
1714 case IWL_UCODE_TLV_INIT
:
1715 pieces
->init
= tlv_data
;
1716 pieces
->init_size
= tlv_len
;
1718 case IWL_UCODE_TLV_INIT_DATA
:
1719 pieces
->init_data
= tlv_data
;
1720 pieces
->init_data_size
= tlv_len
;
1722 case IWL_UCODE_TLV_BOOT
:
1723 pieces
->boot
= tlv_data
;
1724 pieces
->boot_size
= tlv_len
;
1726 case IWL_UCODE_TLV_PROBE_MAX_LEN
:
1729 capa
->max_probe_length
=
1730 le32_to_cpup((__le32
*)tlv_data
);
1732 case IWL_UCODE_TLV_INIT_EVTLOG_PTR
:
1735 pieces
->init_evtlog_ptr
=
1736 le32_to_cpup((__le32
*)tlv_data
);
1738 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE
:
1741 pieces
->init_evtlog_size
=
1742 le32_to_cpup((__le32
*)tlv_data
);
1744 case IWL_UCODE_TLV_INIT_ERRLOG_PTR
:
1747 pieces
->init_errlog_ptr
=
1748 le32_to_cpup((__le32
*)tlv_data
);
1750 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR
:
1753 pieces
->inst_evtlog_ptr
=
1754 le32_to_cpup((__le32
*)tlv_data
);
1756 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE
:
1759 pieces
->inst_evtlog_size
=
1760 le32_to_cpup((__le32
*)tlv_data
);
1762 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR
:
1765 pieces
->inst_errlog_ptr
=
1766 le32_to_cpup((__le32
*)tlv_data
);
1780 * iwl_ucode_callback - callback when firmware was loaded
1782 * If loaded successfully, copies the firmware into buffers
1783 * for the card to fetch (via DMA).
1785 static void iwl_ucode_callback(const struct firmware
*ucode_raw
, void *context
)
1787 struct iwl_priv
*priv
= context
;
1788 struct iwl_ucode_header
*ucode
;
1790 struct iwlagn_firmware_pieces pieces
;
1791 const unsigned int api_max
= priv
->cfg
->ucode_api_max
;
1792 const unsigned int api_min
= priv
->cfg
->ucode_api_min
;
1796 struct iwlagn_ucode_capabilities ucode_capa
= {
1797 .max_probe_length
= 200,
1800 memset(&pieces
, 0, sizeof(pieces
));
1803 IWL_ERR(priv
, "request for firmware file '%s' failed.\n",
1804 priv
->firmware_name
);
1808 IWL_DEBUG_INFO(priv
, "Loaded firmware file '%s' (%zd bytes).\n",
1809 priv
->firmware_name
, ucode_raw
->size
);
1811 /* Make sure that we got at least the API version number */
1812 if (ucode_raw
->size
< 4) {
1813 IWL_ERR(priv
, "File size way too small!\n");
1817 /* Data from ucode file: header followed by uCode images */
1818 ucode
= (struct iwl_ucode_header
*)ucode_raw
->data
;
1821 err
= iwlagn_load_legacy_firmware(priv
, ucode_raw
, &pieces
);
1823 err
= iwlagn_load_firmware(priv
, ucode_raw
, &pieces
,
1829 api_ver
= IWL_UCODE_API(priv
->ucode_ver
);
1830 build
= pieces
.build
;
1833 * api_ver should match the api version forming part of the
1834 * firmware filename ... but we don't check for that and only rely
1835 * on the API version read from firmware header from here on forward
1837 if (api_ver
< api_min
|| api_ver
> api_max
) {
1838 IWL_ERR(priv
, "Driver unable to support your firmware API. "
1839 "Driver supports v%u, firmware is v%u.\n",
1844 if (api_ver
!= api_max
)
1845 IWL_ERR(priv
, "Firmware has old API version. Expected v%u, "
1846 "got v%u. New firmware can be obtained "
1847 "from http://www.intellinuxwireless.org.\n",
1851 sprintf(buildstr
, " build %u", build
);
1855 IWL_INFO(priv
, "loaded firmware version %u.%u.%u.%u%s\n",
1856 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1857 IWL_UCODE_MINOR(priv
->ucode_ver
),
1858 IWL_UCODE_API(priv
->ucode_ver
),
1859 IWL_UCODE_SERIAL(priv
->ucode_ver
),
1862 snprintf(priv
->hw
->wiphy
->fw_version
,
1863 sizeof(priv
->hw
->wiphy
->fw_version
),
1865 IWL_UCODE_MAJOR(priv
->ucode_ver
),
1866 IWL_UCODE_MINOR(priv
->ucode_ver
),
1867 IWL_UCODE_API(priv
->ucode_ver
),
1868 IWL_UCODE_SERIAL(priv
->ucode_ver
),
1872 * For any of the failures below (before allocating pci memory)
1873 * we will try to load a version with a smaller API -- maybe the
1874 * user just got a corrupted version of the latest API.
1877 IWL_DEBUG_INFO(priv
, "f/w package hdr ucode version raw = 0x%x\n",
1879 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime inst size = %Zd\n",
1881 IWL_DEBUG_INFO(priv
, "f/w package hdr runtime data size = %Zd\n",
1883 IWL_DEBUG_INFO(priv
, "f/w package hdr init inst size = %Zd\n",
1885 IWL_DEBUG_INFO(priv
, "f/w package hdr init data size = %Zd\n",
1886 pieces
.init_data_size
);
1887 IWL_DEBUG_INFO(priv
, "f/w package hdr boot inst size = %Zd\n",
1890 /* Verify that uCode images will fit in card's SRAM */
1891 if (pieces
.inst_size
> priv
->hw_params
.max_inst_size
) {
1892 IWL_ERR(priv
, "uCode instr len %Zd too large to fit in\n",
1897 if (pieces
.data_size
> priv
->hw_params
.max_data_size
) {
1898 IWL_ERR(priv
, "uCode data len %Zd too large to fit in\n",
1903 if (pieces
.init_size
> priv
->hw_params
.max_inst_size
) {
1904 IWL_ERR(priv
, "uCode init instr len %Zd too large to fit in\n",
1909 if (pieces
.init_data_size
> priv
->hw_params
.max_data_size
) {
1910 IWL_ERR(priv
, "uCode init data len %Zd too large to fit in\n",
1911 pieces
.init_data_size
);
1915 if (pieces
.boot_size
> priv
->hw_params
.max_bsm_size
) {
1916 IWL_ERR(priv
, "uCode boot instr len %Zd too large to fit in\n",
1921 /* Allocate ucode buffers for card's bus-master loading ... */
1923 /* Runtime instructions and 2 copies of data:
1924 * 1) unmodified from disk
1925 * 2) backup cache for save/restore during power-downs */
1926 priv
->ucode_code
.len
= pieces
.inst_size
;
1927 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_code
);
1929 priv
->ucode_data
.len
= pieces
.data_size
;
1930 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data
);
1932 priv
->ucode_data_backup
.len
= pieces
.data_size
;
1933 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_data_backup
);
1935 if (!priv
->ucode_code
.v_addr
|| !priv
->ucode_data
.v_addr
||
1936 !priv
->ucode_data_backup
.v_addr
)
1939 /* Initialization instructions and data */
1940 if (pieces
.init_size
&& pieces
.init_data_size
) {
1941 priv
->ucode_init
.len
= pieces
.init_size
;
1942 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init
);
1944 priv
->ucode_init_data
.len
= pieces
.init_data_size
;
1945 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_init_data
);
1947 if (!priv
->ucode_init
.v_addr
|| !priv
->ucode_init_data
.v_addr
)
1951 /* Bootstrap (instructions only, no data) */
1952 if (pieces
.boot_size
) {
1953 priv
->ucode_boot
.len
= pieces
.boot_size
;
1954 iwl_alloc_fw_desc(priv
->pci_dev
, &priv
->ucode_boot
);
1956 if (!priv
->ucode_boot
.v_addr
)
1960 /* Now that we can no longer fail, copy information */
1963 * The (size - 16) / 12 formula is based on the information recorded
1964 * for each event, which is of mode 1 (including timestamp) for all
1965 * new microcodes that include this information.
1967 priv
->_agn
.init_evtlog_ptr
= pieces
.init_evtlog_ptr
;
1968 if (pieces
.init_evtlog_size
)
1969 priv
->_agn
.init_evtlog_size
= (pieces
.init_evtlog_size
- 16)/12;
1971 priv
->_agn
.init_evtlog_size
= priv
->cfg
->max_event_log_size
;
1972 priv
->_agn
.init_errlog_ptr
= pieces
.init_errlog_ptr
;
1973 priv
->_agn
.inst_evtlog_ptr
= pieces
.inst_evtlog_ptr
;
1974 if (pieces
.inst_evtlog_size
)
1975 priv
->_agn
.inst_evtlog_size
= (pieces
.inst_evtlog_size
- 16)/12;
1977 priv
->_agn
.inst_evtlog_size
= priv
->cfg
->max_event_log_size
;
1978 priv
->_agn
.inst_errlog_ptr
= pieces
.inst_errlog_ptr
;
1980 /* Copy images into buffers for card's bus-master reads ... */
1982 /* Runtime instructions (first block of data in file) */
1983 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode instr len %Zd\n",
1985 memcpy(priv
->ucode_code
.v_addr
, pieces
.inst
, pieces
.inst_size
);
1987 IWL_DEBUG_INFO(priv
, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1988 priv
->ucode_code
.v_addr
, (u32
)priv
->ucode_code
.p_addr
);
1992 * NOTE: Copy into backup buffer will be done in iwl_up()
1994 IWL_DEBUG_INFO(priv
, "Copying (but not loading) uCode data len %Zd\n",
1996 memcpy(priv
->ucode_data
.v_addr
, pieces
.data
, pieces
.data_size
);
1997 memcpy(priv
->ucode_data_backup
.v_addr
, pieces
.data
, pieces
.data_size
);
1999 /* Initialization instructions */
2000 if (pieces
.init_size
) {
2001 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init instr len %Zd\n",
2003 memcpy(priv
->ucode_init
.v_addr
, pieces
.init
, pieces
.init_size
);
2006 /* Initialization data */
2007 if (pieces
.init_data_size
) {
2008 IWL_DEBUG_INFO(priv
, "Copying (but not loading) init data len %Zd\n",
2009 pieces
.init_data_size
);
2010 memcpy(priv
->ucode_init_data
.v_addr
, pieces
.init_data
,
2011 pieces
.init_data_size
);
2014 /* Bootstrap instructions */
2015 IWL_DEBUG_INFO(priv
, "Copying (but not loading) boot instr len %Zd\n",
2017 memcpy(priv
->ucode_boot
.v_addr
, pieces
.boot
, pieces
.boot_size
);
2019 /**************************************************
2020 * This is still part of probe() in a sense...
2022 * 9. Setup and register with mac80211 and debugfs
2023 **************************************************/
2024 err
= iwl_mac_setup_register(priv
, &ucode_capa
);
2028 err
= iwl_dbgfs_register(priv
, DRV_NAME
);
2030 IWL_ERR(priv
, "failed to create debugfs files. Ignoring error: %d\n", err
);
2032 /* We have our copies now, allow OS release its copies */
2033 release_firmware(ucode_raw
);
2034 complete(&priv
->_agn
.firmware_loading_complete
);
2038 /* try next, if any */
2039 if (iwl_request_firmware(priv
, false))
2041 release_firmware(ucode_raw
);
2045 IWL_ERR(priv
, "failed to allocate pci memory\n");
2046 iwl_dealloc_ucode_pci(priv
);
2048 complete(&priv
->_agn
.firmware_loading_complete
);
2049 device_release_driver(&priv
->pci_dev
->dev
);
2050 release_firmware(ucode_raw
);
2053 static const char *desc_lookup_text
[] = {
2058 "NMI_INTERRUPT_WDG",
2062 "HW_ERROR_TUNE_LOCK",
2063 "HW_ERROR_TEMPERATURE",
2064 "ILLEGAL_CHAN_FREQ",
2067 "NMI_INTERRUPT_HOST",
2068 "NMI_INTERRUPT_ACTION_PT",
2069 "NMI_INTERRUPT_UNKNOWN",
2070 "UCODE_VERSION_MISMATCH",
2071 "HW_ERROR_ABS_LOCK",
2072 "HW_ERROR_CAL_LOCK_FAIL",
2073 "NMI_INTERRUPT_INST_ACTION_PT",
2074 "NMI_INTERRUPT_DATA_ACTION_PT",
2076 "NMI_INTERRUPT_TRM",
2077 "NMI_INTERRUPT_BREAK_POINT"
2082 "ADVANCED SYSASSERT"
2085 static const char *desc_lookup(int i
)
2087 int max
= ARRAY_SIZE(desc_lookup_text
) - 1;
2089 if (i
< 0 || i
> max
)
2092 return desc_lookup_text
[i
];
2095 #define ERROR_START_OFFSET (1 * sizeof(u32))
2096 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2098 void iwl_dump_nic_error_log(struct iwl_priv
*priv
)
2101 u32 desc
, time
, count
, base
, data1
;
2102 u32 blink1
, blink2
, ilink1
, ilink2
;
2105 if (priv
->ucode_type
== UCODE_INIT
) {
2106 base
= le32_to_cpu(priv
->card_alive_init
.error_event_table_ptr
);
2108 base
= priv
->_agn
.init_errlog_ptr
;
2110 base
= le32_to_cpu(priv
->card_alive
.error_event_table_ptr
);
2112 base
= priv
->_agn
.inst_errlog_ptr
;
2115 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
2117 "Not valid error log pointer 0x%08X for %s uCode\n",
2118 base
, (priv
->ucode_type
== UCODE_INIT
) ? "Init" : "RT");
2122 count
= iwl_read_targ_mem(priv
, base
);
2124 if (ERROR_START_OFFSET
<= count
* ERROR_ELEM_SIZE
) {
2125 IWL_ERR(priv
, "Start IWL Error Log Dump:\n");
2126 IWL_ERR(priv
, "Status: 0x%08lX, count: %d\n",
2127 priv
->status
, count
);
2130 desc
= iwl_read_targ_mem(priv
, base
+ 1 * sizeof(u32
));
2131 pc
= iwl_read_targ_mem(priv
, base
+ 2 * sizeof(u32
));
2132 blink1
= iwl_read_targ_mem(priv
, base
+ 3 * sizeof(u32
));
2133 blink2
= iwl_read_targ_mem(priv
, base
+ 4 * sizeof(u32
));
2134 ilink1
= iwl_read_targ_mem(priv
, base
+ 5 * sizeof(u32
));
2135 ilink2
= iwl_read_targ_mem(priv
, base
+ 6 * sizeof(u32
));
2136 data1
= iwl_read_targ_mem(priv
, base
+ 7 * sizeof(u32
));
2137 data2
= iwl_read_targ_mem(priv
, base
+ 8 * sizeof(u32
));
2138 line
= iwl_read_targ_mem(priv
, base
+ 9 * sizeof(u32
));
2139 time
= iwl_read_targ_mem(priv
, base
+ 11 * sizeof(u32
));
2140 hcmd
= iwl_read_targ_mem(priv
, base
+ 22 * sizeof(u32
));
2142 trace_iwlwifi_dev_ucode_error(priv
, desc
, time
, data1
, data2
, line
,
2143 blink1
, blink2
, ilink1
, ilink2
);
2145 IWL_ERR(priv
, "Desc Time "
2146 "data1 data2 line\n");
2147 IWL_ERR(priv
, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
2148 desc_lookup(desc
), desc
, time
, data1
, data2
, line
);
2149 IWL_ERR(priv
, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2150 IWL_ERR(priv
, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2151 pc
, blink1
, blink2
, ilink1
, ilink2
, hcmd
);
2154 #define EVENT_START_OFFSET (4 * sizeof(u32))
2157 * iwl_print_event_log - Dump error event log to syslog
2160 static int iwl_print_event_log(struct iwl_priv
*priv
, u32 start_idx
,
2161 u32 num_events
, u32 mode
,
2162 int pos
, char **buf
, size_t bufsz
)
2165 u32 base
; /* SRAM byte address of event log header */
2166 u32 event_size
; /* 2 u32s, or 3 u32s if timestamp recorded */
2167 u32 ptr
; /* SRAM byte address of log data */
2168 u32 ev
, time
, data
; /* event log data */
2169 unsigned long reg_flags
;
2171 if (num_events
== 0)
2174 if (priv
->ucode_type
== UCODE_INIT
) {
2175 base
= le32_to_cpu(priv
->card_alive_init
.log_event_table_ptr
);
2177 base
= priv
->_agn
.init_evtlog_ptr
;
2179 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
2181 base
= priv
->_agn
.inst_evtlog_ptr
;
2185 event_size
= 2 * sizeof(u32
);
2187 event_size
= 3 * sizeof(u32
);
2189 ptr
= base
+ EVENT_START_OFFSET
+ (start_idx
* event_size
);
2191 /* Make sure device is powered up for SRAM reads */
2192 spin_lock_irqsave(&priv
->reg_lock
, reg_flags
);
2193 iwl_grab_nic_access(priv
);
2195 /* Set starting address; reads will auto-increment */
2196 _iwl_write_direct32(priv
, HBUS_TARG_MEM_RADDR
, ptr
);
2199 /* "time" is actually "data" for mode 0 (no timestamp).
2200 * place event id # at far right for easier visual parsing. */
2201 for (i
= 0; i
< num_events
; i
++) {
2202 ev
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2203 time
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2207 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2208 "EVT_LOG:0x%08x:%04u\n",
2211 trace_iwlwifi_dev_ucode_event(priv
, 0,
2213 IWL_ERR(priv
, "EVT_LOG:0x%08x:%04u\n",
2217 data
= _iwl_read_direct32(priv
, HBUS_TARG_MEM_RDAT
);
2219 pos
+= scnprintf(*buf
+ pos
, bufsz
- pos
,
2220 "EVT_LOGT:%010u:0x%08x:%04u\n",
2223 IWL_ERR(priv
, "EVT_LOGT:%010u:0x%08x:%04u\n",
2225 trace_iwlwifi_dev_ucode_event(priv
, time
,
2231 /* Allow device to power down */
2232 iwl_release_nic_access(priv
);
2233 spin_unlock_irqrestore(&priv
->reg_lock
, reg_flags
);
2238 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2240 static int iwl_print_last_event_logs(struct iwl_priv
*priv
, u32 capacity
,
2241 u32 num_wraps
, u32 next_entry
,
2243 int pos
, char **buf
, size_t bufsz
)
2246 * display the newest DEFAULT_LOG_ENTRIES entries
2247 * i.e the entries just before the next ont that uCode would fill.
2250 if (next_entry
< size
) {
2251 pos
= iwl_print_event_log(priv
,
2252 capacity
- (size
- next_entry
),
2253 size
- next_entry
, mode
,
2255 pos
= iwl_print_event_log(priv
, 0,
2259 pos
= iwl_print_event_log(priv
, next_entry
- size
,
2260 size
, mode
, pos
, buf
, bufsz
);
2262 if (next_entry
< size
) {
2263 pos
= iwl_print_event_log(priv
, 0, next_entry
,
2264 mode
, pos
, buf
, bufsz
);
2266 pos
= iwl_print_event_log(priv
, next_entry
- size
,
2267 size
, mode
, pos
, buf
, bufsz
);
2273 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2275 int iwl_dump_nic_event_log(struct iwl_priv
*priv
, bool full_log
,
2276 char **buf
, bool display
)
2278 u32 base
; /* SRAM byte address of event log header */
2279 u32 capacity
; /* event log capacity in # entries */
2280 u32 mode
; /* 0 - no timestamp, 1 - timestamp recorded */
2281 u32 num_wraps
; /* # times uCode wrapped to top of log */
2282 u32 next_entry
; /* index of next entry to be written by uCode */
2283 u32 size
; /* # entries that we'll print */
2288 if (priv
->ucode_type
== UCODE_INIT
) {
2289 base
= le32_to_cpu(priv
->card_alive_init
.log_event_table_ptr
);
2290 logsize
= priv
->_agn
.init_evtlog_size
;
2292 base
= priv
->_agn
.init_evtlog_ptr
;
2294 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
2295 logsize
= priv
->_agn
.inst_evtlog_size
;
2297 base
= priv
->_agn
.inst_evtlog_ptr
;
2300 if (!priv
->cfg
->ops
->lib
->is_valid_rtc_data_addr(base
)) {
2302 "Invalid event log pointer 0x%08X for %s uCode\n",
2303 base
, (priv
->ucode_type
== UCODE_INIT
) ? "Init" : "RT");
2307 /* event log header */
2308 capacity
= iwl_read_targ_mem(priv
, base
);
2309 mode
= iwl_read_targ_mem(priv
, base
+ (1 * sizeof(u32
)));
2310 num_wraps
= iwl_read_targ_mem(priv
, base
+ (2 * sizeof(u32
)));
2311 next_entry
= iwl_read_targ_mem(priv
, base
+ (3 * sizeof(u32
)));
2313 if (capacity
> logsize
) {
2314 IWL_ERR(priv
, "Log capacity %d is bogus, limit to %d entries\n",
2319 if (next_entry
> logsize
) {
2320 IWL_ERR(priv
, "Log write index %d is bogus, limit to %d\n",
2321 next_entry
, logsize
);
2322 next_entry
= logsize
;
2325 size
= num_wraps
? capacity
: next_entry
;
2327 /* bail out if nothing in log */
2329 IWL_ERR(priv
, "Start IWL Event Log Dump: nothing in log\n");
2333 #ifdef CONFIG_IWLWIFI_DEBUG
2334 if (!(iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) && !full_log
)
2335 size
= (size
> DEFAULT_DUMP_EVENT_LOG_ENTRIES
)
2336 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES
: size
;
2338 size
= (size
> DEFAULT_DUMP_EVENT_LOG_ENTRIES
)
2339 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES
: size
;
2341 IWL_ERR(priv
, "Start IWL Event Log Dump: display last %u entries\n",
2344 #ifdef CONFIG_IWLWIFI_DEBUG
2347 bufsz
= capacity
* 48;
2350 *buf
= kmalloc(bufsz
, GFP_KERNEL
);
2354 if ((iwl_get_debug_level(priv
) & IWL_DL_FW_ERRORS
) || full_log
) {
2356 * if uCode has wrapped back to top of log,
2357 * start at the oldest entry,
2358 * i.e the next one that uCode would fill.
2361 pos
= iwl_print_event_log(priv
, next_entry
,
2362 capacity
- next_entry
, mode
,
2364 /* (then/else) start at top of log */
2365 pos
= iwl_print_event_log(priv
, 0,
2366 next_entry
, mode
, pos
, buf
, bufsz
);
2368 pos
= iwl_print_last_event_logs(priv
, capacity
, num_wraps
,
2369 next_entry
, size
, mode
,
2372 pos
= iwl_print_last_event_logs(priv
, capacity
, num_wraps
,
2373 next_entry
, size
, mode
,
2380 * iwl_alive_start - called after REPLY_ALIVE notification received
2381 * from protocol/runtime uCode (initialization uCode's
2382 * Alive gets handled by iwl_init_alive_start()).
2384 static void iwl_alive_start(struct iwl_priv
*priv
)
2388 IWL_DEBUG_INFO(priv
, "Runtime Alive received.\n");
2390 if (priv
->card_alive
.is_valid
!= UCODE_VALID_OK
) {
2391 /* We had an error bringing up the hardware, so take it
2392 * all the way back down so we can try again */
2393 IWL_DEBUG_INFO(priv
, "Alive failed.\n");
2397 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2398 * This is a paranoid check, because we would not have gotten the
2399 * "runtime" alive if code weren't properly loaded. */
2400 if (iwl_verify_ucode(priv
)) {
2401 /* Runtime instruction load was bad;
2402 * take it all the way back down so we can try again */
2403 IWL_DEBUG_INFO(priv
, "Bad runtime uCode load.\n");
2407 ret
= priv
->cfg
->ops
->lib
->alive_notify(priv
);
2410 "Could not complete ALIVE transition [ntf]: %d\n", ret
);
2414 /* After the ALIVE response, we can send host commands to the uCode */
2415 set_bit(STATUS_ALIVE
, &priv
->status
);
2417 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
2418 /* Enable timer to monitor the driver queues */
2419 mod_timer(&priv
->monitor_recover
,
2421 msecs_to_jiffies(priv
->cfg
->monitor_recover_period
));
2424 if (iwl_is_rfkill(priv
))
2427 ieee80211_wake_queues(priv
->hw
);
2429 priv
->active_rate
= IWL_RATES_MASK
;
2431 /* Configure Tx antenna selection based on H/W config */
2432 if (priv
->cfg
->ops
->hcmd
->set_tx_ant
)
2433 priv
->cfg
->ops
->hcmd
->set_tx_ant(priv
, priv
->cfg
->valid_tx_ant
);
2435 if (iwl_is_associated(priv
)) {
2436 struct iwl_rxon_cmd
*active_rxon
=
2437 (struct iwl_rxon_cmd
*)&priv
->active_rxon
;
2438 /* apply any changes in staging */
2439 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2440 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2442 /* Initialize our rx_config data */
2443 iwl_connection_init_rx_config(priv
, NULL
);
2445 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2446 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2449 /* Configure Bluetooth device coexistence support */
2450 priv
->cfg
->ops
->hcmd
->send_bt_config(priv
);
2452 iwl_reset_run_time_calib(priv
);
2454 /* Configure the adapter for unassociated operation */
2455 iwlcore_commit_rxon(priv
);
2457 /* At this point, the NIC is initialized and operational */
2458 iwl_rf_kill_ct_config(priv
);
2460 iwl_leds_init(priv
);
2462 IWL_DEBUG_INFO(priv
, "ALIVE processing complete.\n");
2463 set_bit(STATUS_READY
, &priv
->status
);
2464 wake_up_interruptible(&priv
->wait_command_queue
);
2466 iwl_power_update_mode(priv
, true);
2467 IWL_DEBUG_INFO(priv
, "Updated power mode\n");
2473 queue_work(priv
->workqueue
, &priv
->restart
);
2476 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
);
2478 static void __iwl_down(struct iwl_priv
*priv
)
2480 unsigned long flags
;
2481 int exit_pending
= test_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2483 IWL_DEBUG_INFO(priv
, DRV_NAME
" is going down\n");
2486 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2488 iwl_clear_ucode_stations(priv
);
2489 iwl_dealloc_bcast_station(priv
);
2490 iwl_clear_driver_stations(priv
);
2492 /* Unblock any waiting calls */
2493 wake_up_interruptible_all(&priv
->wait_command_queue
);
2495 /* Wipe out the EXIT_PENDING status bit if we are not actually
2496 * exiting the module */
2498 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2500 /* stop and reset the on-board processor */
2501 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
2503 /* tell the device to stop sending interrupts */
2504 spin_lock_irqsave(&priv
->lock
, flags
);
2505 iwl_disable_interrupts(priv
);
2506 spin_unlock_irqrestore(&priv
->lock
, flags
);
2507 iwl_synchronize_irq(priv
);
2509 if (priv
->mac80211_registered
)
2510 ieee80211_stop_queues(priv
->hw
);
2512 /* If we have not previously called iwl_init() then
2513 * clear all bits but the RF Kill bit and return */
2514 if (!iwl_is_init(priv
)) {
2515 priv
->status
= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2517 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2518 STATUS_GEO_CONFIGURED
|
2519 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2520 STATUS_EXIT_PENDING
;
2524 /* ...otherwise clear out all the status bits but the RF Kill
2525 * bit and continue taking the NIC down. */
2526 priv
->status
&= test_bit(STATUS_RF_KILL_HW
, &priv
->status
) <<
2528 test_bit(STATUS_GEO_CONFIGURED
, &priv
->status
) <<
2529 STATUS_GEO_CONFIGURED
|
2530 test_bit(STATUS_FW_ERROR
, &priv
->status
) <<
2532 test_bit(STATUS_EXIT_PENDING
, &priv
->status
) <<
2533 STATUS_EXIT_PENDING
;
2535 /* device going down, Stop using ICT table */
2536 iwl_disable_ict(priv
);
2538 iwlagn_txq_ctx_stop(priv
);
2539 iwlagn_rxq_stop(priv
);
2541 /* Power-down device's busmaster DMA clocks */
2542 iwl_write_prph(priv
, APMG_CLK_DIS_REG
, APMG_CLK_VAL_DMA_CLK_RQT
);
2545 /* Make sure (redundant) we've released our request to stay awake */
2546 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ
);
2548 /* Stop the device, and put it in low power state */
2549 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
2552 memset(&priv
->card_alive
, 0, sizeof(struct iwl_alive_resp
));
2554 if (priv
->ibss_beacon
)
2555 dev_kfree_skb(priv
->ibss_beacon
);
2556 priv
->ibss_beacon
= NULL
;
2558 /* clear out any free frames */
2559 iwl_clear_free_frames(priv
);
2562 static void iwl_down(struct iwl_priv
*priv
)
2564 mutex_lock(&priv
->mutex
);
2566 mutex_unlock(&priv
->mutex
);
2568 iwl_cancel_deferred_work(priv
);
2571 #define HW_READY_TIMEOUT (50)
2573 static int iwl_set_hw_ready(struct iwl_priv
*priv
)
2577 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2578 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
);
2580 /* See if we got it */
2581 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2582 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
2583 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY
,
2585 if (ret
!= -ETIMEDOUT
)
2586 priv
->hw_ready
= true;
2588 priv
->hw_ready
= false;
2590 IWL_DEBUG_INFO(priv
, "hardware %s\n",
2591 (priv
->hw_ready
== 1) ? "ready" : "not ready");
2595 static int iwl_prepare_card_hw(struct iwl_priv
*priv
)
2599 IWL_DEBUG_INFO(priv
, "iwl_prepare_card_hw enter\n");
2601 ret
= iwl_set_hw_ready(priv
);
2605 /* If HW is not ready, prepare the conditions to check again */
2606 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2607 CSR_HW_IF_CONFIG_REG_PREPARE
);
2609 ret
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
2610 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
,
2611 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE
, 150000);
2613 /* HW should be ready by now, check again. */
2614 if (ret
!= -ETIMEDOUT
)
2615 iwl_set_hw_ready(priv
);
2620 #define MAX_HW_RESTARTS 5
2622 static int __iwl_up(struct iwl_priv
*priv
)
2627 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
2628 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
2632 if (!priv
->ucode_data_backup
.v_addr
|| !priv
->ucode_data
.v_addr
) {
2633 IWL_ERR(priv
, "ucode not available for device bringup\n");
2637 ret
= iwl_alloc_bcast_station(priv
, true);
2641 iwl_prepare_card_hw(priv
);
2643 if (!priv
->hw_ready
) {
2644 IWL_WARN(priv
, "Exit HW not ready\n");
2648 /* If platform's RF_KILL switch is NOT set to KILL */
2649 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
2650 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2652 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
2654 if (iwl_is_rfkill(priv
)) {
2655 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
, true);
2657 iwl_enable_interrupts(priv
);
2658 IWL_WARN(priv
, "Radio disabled by HW RF Kill switch\n");
2662 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2664 ret
= iwlagn_hw_nic_init(priv
);
2666 IWL_ERR(priv
, "Unable to init nic\n");
2670 /* make sure rfkill handshake bits are cleared */
2671 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2672 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
2673 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
2675 /* clear (again), then enable host interrupts */
2676 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
2677 iwl_enable_interrupts(priv
);
2679 /* really make sure rfkill handshake bits are cleared */
2680 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2681 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
, CSR_UCODE_SW_BIT_RFKILL
);
2683 /* Copy original ucode data image from disk into backup cache.
2684 * This will be used to initialize the on-board processor's
2685 * data SRAM for a clean start when the runtime program first loads. */
2686 memcpy(priv
->ucode_data_backup
.v_addr
, priv
->ucode_data
.v_addr
,
2687 priv
->ucode_data
.len
);
2689 for (i
= 0; i
< MAX_HW_RESTARTS
; i
++) {
2691 /* load bootstrap state machine,
2692 * load bootstrap program into processor's memory,
2693 * prepare to load the "initialize" uCode */
2694 ret
= priv
->cfg
->ops
->lib
->load_ucode(priv
);
2697 IWL_ERR(priv
, "Unable to set up bootstrap uCode: %d\n",
2702 /* start card; "initialize" will load runtime ucode */
2703 iwl_nic_start(priv
);
2705 IWL_DEBUG_INFO(priv
, DRV_NAME
" is coming up\n");
2710 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2712 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
2714 /* tried to restart and config the device for as long as our
2715 * patience could withstand */
2716 IWL_ERR(priv
, "Unable to initialize device after %d attempts.\n", i
);
2721 /*****************************************************************************
2723 * Workqueue callbacks
2725 *****************************************************************************/
2727 static void iwl_bg_init_alive_start(struct work_struct
*data
)
2729 struct iwl_priv
*priv
=
2730 container_of(data
, struct iwl_priv
, init_alive_start
.work
);
2732 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2735 mutex_lock(&priv
->mutex
);
2736 priv
->cfg
->ops
->lib
->init_alive_start(priv
);
2737 mutex_unlock(&priv
->mutex
);
2740 static void iwl_bg_alive_start(struct work_struct
*data
)
2742 struct iwl_priv
*priv
=
2743 container_of(data
, struct iwl_priv
, alive_start
.work
);
2745 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2748 /* enable dram interrupt */
2749 iwl_reset_ict(priv
);
2751 mutex_lock(&priv
->mutex
);
2752 iwl_alive_start(priv
);
2753 mutex_unlock(&priv
->mutex
);
2756 static void iwl_bg_run_time_calib_work(struct work_struct
*work
)
2758 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
2759 run_time_calib_work
);
2761 mutex_lock(&priv
->mutex
);
2763 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
2764 test_bit(STATUS_SCANNING
, &priv
->status
)) {
2765 mutex_unlock(&priv
->mutex
);
2769 if (priv
->start_calib
) {
2770 iwl_chain_noise_calibration(priv
, &priv
->statistics
);
2772 iwl_sensitivity_calibration(priv
, &priv
->statistics
);
2775 mutex_unlock(&priv
->mutex
);
2778 static void iwl_bg_restart(struct work_struct
*data
)
2780 struct iwl_priv
*priv
= container_of(data
, struct iwl_priv
, restart
);
2782 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2785 if (test_and_clear_bit(STATUS_FW_ERROR
, &priv
->status
)) {
2786 mutex_lock(&priv
->mutex
);
2789 mutex_unlock(&priv
->mutex
);
2791 ieee80211_restart_hw(priv
->hw
);
2795 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2798 mutex_lock(&priv
->mutex
);
2800 mutex_unlock(&priv
->mutex
);
2804 static void iwl_bg_rx_replenish(struct work_struct
*data
)
2806 struct iwl_priv
*priv
=
2807 container_of(data
, struct iwl_priv
, rx_replenish
);
2809 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2812 mutex_lock(&priv
->mutex
);
2813 iwlagn_rx_replenish(priv
);
2814 mutex_unlock(&priv
->mutex
);
2817 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2819 void iwl_post_associate(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
2821 struct ieee80211_conf
*conf
= NULL
;
2824 if (!vif
|| !priv
->is_open
)
2827 if (vif
->type
== NL80211_IFTYPE_AP
) {
2828 IWL_ERR(priv
, "%s Should not be called in AP mode\n", __func__
);
2832 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2835 iwl_scan_cancel_timeout(priv
, 200);
2837 conf
= ieee80211_get_hw_conf(priv
->hw
);
2839 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
2840 iwlcore_commit_rxon(priv
);
2842 iwl_setup_rxon_timing(priv
, vif
);
2843 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
2844 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
2846 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
2847 "Attempting to continue.\n");
2849 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
2851 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
2853 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
2854 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
2856 priv
->staging_rxon
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
2858 IWL_DEBUG_ASSOC(priv
, "assoc id %d beacon interval %d\n",
2859 vif
->bss_conf
.aid
, vif
->bss_conf
.beacon_int
);
2861 if (vif
->bss_conf
.use_short_preamble
)
2862 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
2864 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
2866 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
2867 if (vif
->bss_conf
.use_short_slot
)
2868 priv
->staging_rxon
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
2870 priv
->staging_rxon
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
2873 iwlcore_commit_rxon(priv
);
2875 IWL_DEBUG_ASSOC(priv
, "Associated as %d to: %pM\n",
2876 vif
->bss_conf
.aid
, priv
->active_rxon
.bssid_addr
);
2878 switch (vif
->type
) {
2879 case NL80211_IFTYPE_STATION
:
2881 case NL80211_IFTYPE_ADHOC
:
2882 iwl_send_beacon_cmd(priv
);
2885 IWL_ERR(priv
, "%s Should not be called in %d mode\n",
2886 __func__
, vif
->type
);
2890 /* the chain noise calibration will enabled PM upon completion
2891 * If chain noise has already been run, then we need to enable
2892 * power management here */
2893 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
2894 iwl_power_update_mode(priv
, false);
2896 /* Enable Rx differential gain and sensitivity calibrations */
2897 iwl_chain_noise_reset(priv
);
2898 priv
->start_calib
= 1;
2902 /*****************************************************************************
2904 * mac80211 entry point functions
2906 *****************************************************************************/
2908 #define UCODE_READY_TIMEOUT (4 * HZ)
2911 * Not a mac80211 entry point function, but it fits in with all the
2912 * other mac80211 functions grouped here.
2914 static int iwl_mac_setup_register(struct iwl_priv
*priv
,
2915 struct iwlagn_ucode_capabilities
*capa
)
2918 struct ieee80211_hw
*hw
= priv
->hw
;
2919 hw
->rate_control_algorithm
= "iwl-agn-rs";
2921 /* Tell mac80211 our characteristics */
2922 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
2923 IEEE80211_HW_AMPDU_AGGREGATION
|
2924 IEEE80211_HW_SPECTRUM_MGMT
;
2926 if (!priv
->cfg
->broken_powersave
)
2927 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
2928 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
2930 if (priv
->cfg
->sku
& IWL_SKU_N
)
2931 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
2932 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
2934 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
2935 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
2937 hw
->wiphy
->interface_modes
=
2938 BIT(NL80211_IFTYPE_STATION
) |
2939 BIT(NL80211_IFTYPE_ADHOC
);
2941 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
2942 WIPHY_FLAG_DISABLE_BEACON_HINTS
;
2945 * For now, disable PS by default because it affects
2946 * RX performance significantly.
2948 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
2950 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
2951 /* we create the 802.11 header and a zero-length SSID element */
2952 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 2;
2954 /* Default value; 4 EDCA QOS priorities */
2957 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
2959 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
2960 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
2961 &priv
->bands
[IEEE80211_BAND_2GHZ
];
2962 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
2963 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
2964 &priv
->bands
[IEEE80211_BAND_5GHZ
];
2966 ret
= ieee80211_register_hw(priv
->hw
);
2968 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
2971 priv
->mac80211_registered
= 1;
2977 static int iwl_mac_start(struct ieee80211_hw
*hw
)
2979 struct iwl_priv
*priv
= hw
->priv
;
2982 IWL_DEBUG_MAC80211(priv
, "enter\n");
2984 /* we should be verifying the device is ready to be opened */
2985 mutex_lock(&priv
->mutex
);
2986 ret
= __iwl_up(priv
);
2987 mutex_unlock(&priv
->mutex
);
2992 if (iwl_is_rfkill(priv
))
2995 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
2997 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2998 * mac80211 will not be run successfully. */
2999 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
3000 test_bit(STATUS_READY
, &priv
->status
),
3001 UCODE_READY_TIMEOUT
);
3003 if (!test_bit(STATUS_READY
, &priv
->status
)) {
3004 IWL_ERR(priv
, "START_ALIVE timeout after %dms.\n",
3005 jiffies_to_msecs(UCODE_READY_TIMEOUT
));
3010 iwl_led_start(priv
);
3014 IWL_DEBUG_MAC80211(priv
, "leave\n");
3018 static void iwl_mac_stop(struct ieee80211_hw
*hw
)
3020 struct iwl_priv
*priv
= hw
->priv
;
3022 IWL_DEBUG_MAC80211(priv
, "enter\n");
3029 if (iwl_is_ready_rf(priv
) || test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
3030 /* stop mac, cancel any scan request and clear
3031 * RXON_FILTER_ASSOC_MSK BIT
3033 mutex_lock(&priv
->mutex
);
3034 iwl_scan_cancel_timeout(priv
, 100);
3035 mutex_unlock(&priv
->mutex
);
3040 flush_workqueue(priv
->workqueue
);
3042 /* enable interrupts again in order to receive rfkill changes */
3043 iwl_write32(priv
, CSR_INT
, 0xFFFFFFFF);
3044 iwl_enable_interrupts(priv
);
3046 IWL_DEBUG_MAC80211(priv
, "leave\n");
3049 static int iwl_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
3051 struct iwl_priv
*priv
= hw
->priv
;
3053 IWL_DEBUG_MACDUMP(priv
, "enter\n");
3055 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
3056 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
3058 if (iwlagn_tx_skb(priv
, skb
))
3059 dev_kfree_skb_any(skb
);
3061 IWL_DEBUG_MACDUMP(priv
, "leave\n");
3062 return NETDEV_TX_OK
;
3065 void iwl_config_ap(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
)
3069 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3072 /* The following should be done only at AP bring up */
3073 if (!iwl_is_associated(priv
)) {
3075 /* RXON - unassoc (to set timing command) */
3076 priv
->staging_rxon
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
3077 iwlcore_commit_rxon(priv
);
3080 iwl_setup_rxon_timing(priv
, vif
);
3081 ret
= iwl_send_cmd_pdu(priv
, REPLY_RXON_TIMING
,
3082 sizeof(priv
->rxon_timing
), &priv
->rxon_timing
);
3084 IWL_WARN(priv
, "REPLY_RXON_TIMING failed - "
3085 "Attempting to continue.\n");
3087 /* AP has all antennas */
3088 priv
->chain_noise_data
.active_chains
=
3089 priv
->hw_params
.valid_rx_ant
;
3090 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
3091 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
3092 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
3094 priv
->staging_rxon
.assoc_id
= 0;
3096 if (vif
->bss_conf
.use_short_preamble
)
3097 priv
->staging_rxon
.flags
|=
3098 RXON_FLG_SHORT_PREAMBLE_MSK
;
3100 priv
->staging_rxon
.flags
&=
3101 ~RXON_FLG_SHORT_PREAMBLE_MSK
;
3103 if (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) {
3104 if (vif
->bss_conf
.use_short_slot
)
3105 priv
->staging_rxon
.flags
|=
3106 RXON_FLG_SHORT_SLOT_MSK
;
3108 priv
->staging_rxon
.flags
&=
3109 ~RXON_FLG_SHORT_SLOT_MSK
;
3111 /* restore RXON assoc */
3112 priv
->staging_rxon
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
3113 iwlcore_commit_rxon(priv
);
3115 iwl_send_beacon_cmd(priv
);
3117 /* FIXME - we need to add code here to detect a totally new
3118 * configuration, reset the AP, unassoc, rxon timing, assoc,
3119 * clear sta table, add BCAST sta... */
3122 static void iwl_mac_update_tkip_key(struct ieee80211_hw
*hw
,
3123 struct ieee80211_vif
*vif
,
3124 struct ieee80211_key_conf
*keyconf
,
3125 struct ieee80211_sta
*sta
,
3126 u32 iv32
, u16
*phase1key
)
3129 struct iwl_priv
*priv
= hw
->priv
;
3130 IWL_DEBUG_MAC80211(priv
, "enter\n");
3132 iwl_update_tkip_key(priv
, keyconf
, sta
,
3135 IWL_DEBUG_MAC80211(priv
, "leave\n");
3138 static int iwl_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
3139 struct ieee80211_vif
*vif
,
3140 struct ieee80211_sta
*sta
,
3141 struct ieee80211_key_conf
*key
)
3143 struct iwl_priv
*priv
= hw
->priv
;
3146 bool is_default_wep_key
= false;
3148 IWL_DEBUG_MAC80211(priv
, "enter\n");
3150 if (priv
->cfg
->mod_params
->sw_crypto
) {
3151 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
3155 sta_id
= iwl_sta_id_or_broadcast(priv
, sta
);
3156 if (sta_id
== IWL_INVALID_STATION
)
3159 mutex_lock(&priv
->mutex
);
3160 iwl_scan_cancel_timeout(priv
, 100);
3163 * If we are getting WEP group key and we didn't receive any key mapping
3164 * so far, we are in legacy wep mode (group key only), otherwise we are
3166 * In legacy wep mode, we use another host command to the uCode.
3168 if (key
->alg
== ALG_WEP
&& !sta
&& vif
->type
!= NL80211_IFTYPE_AP
) {
3170 is_default_wep_key
= !priv
->key_mapping_key
;
3172 is_default_wep_key
=
3173 (key
->hw_key_idx
== HW_KEY_DEFAULT
);
3178 if (is_default_wep_key
)
3179 ret
= iwl_set_default_wep_key(priv
, key
);
3181 ret
= iwl_set_dynamic_key(priv
, key
, sta_id
);
3183 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
3186 if (is_default_wep_key
)
3187 ret
= iwl_remove_default_wep_key(priv
, key
);
3189 ret
= iwl_remove_dynamic_key(priv
, key
, sta_id
);
3191 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
3197 mutex_unlock(&priv
->mutex
);
3198 IWL_DEBUG_MAC80211(priv
, "leave\n");
3203 static int iwl_mac_ampdu_action(struct ieee80211_hw
*hw
,
3204 struct ieee80211_vif
*vif
,
3205 enum ieee80211_ampdu_mlme_action action
,
3206 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
3208 struct iwl_priv
*priv
= hw
->priv
;
3211 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
3214 if (!(priv
->cfg
->sku
& IWL_SKU_N
))
3218 case IEEE80211_AMPDU_RX_START
:
3219 IWL_DEBUG_HT(priv
, "start Rx\n");
3220 return iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
3221 case IEEE80211_AMPDU_RX_STOP
:
3222 IWL_DEBUG_HT(priv
, "stop Rx\n");
3223 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
3224 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3228 case IEEE80211_AMPDU_TX_START
:
3229 IWL_DEBUG_HT(priv
, "start Tx\n");
3230 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
3232 priv
->_agn
.agg_tids_count
++;
3233 IWL_DEBUG_HT(priv
, "priv->_agn.agg_tids_count = %u\n",
3234 priv
->_agn
.agg_tids_count
);
3237 case IEEE80211_AMPDU_TX_STOP
:
3238 IWL_DEBUG_HT(priv
, "stop Tx\n");
3239 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
3240 if ((ret
== 0) && (priv
->_agn
.agg_tids_count
> 0)) {
3241 priv
->_agn
.agg_tids_count
--;
3242 IWL_DEBUG_HT(priv
, "priv->_agn.agg_tids_count = %u\n",
3243 priv
->_agn
.agg_tids_count
);
3245 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
3249 case IEEE80211_AMPDU_TX_OPERATIONAL
:
3253 IWL_DEBUG_HT(priv
, "unknown\n");
3260 static void iwl_mac_sta_notify(struct ieee80211_hw
*hw
,
3261 struct ieee80211_vif
*vif
,
3262 enum sta_notify_cmd cmd
,
3263 struct ieee80211_sta
*sta
)
3265 struct iwl_priv
*priv
= hw
->priv
;
3266 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
3270 case STA_NOTIFY_SLEEP
:
3271 WARN_ON(!sta_priv
->client
);
3272 sta_priv
->asleep
= true;
3273 if (atomic_read(&sta_priv
->pending_frames
) > 0)
3274 ieee80211_sta_block_awake(hw
, sta
, true);
3276 case STA_NOTIFY_AWAKE
:
3277 WARN_ON(!sta_priv
->client
);
3278 if (!sta_priv
->asleep
)
3280 sta_priv
->asleep
= false;
3281 sta_id
= iwl_sta_id(sta
);
3282 if (sta_id
!= IWL_INVALID_STATION
)
3283 iwl_sta_modify_ps_wake(priv
, sta_id
);
3290 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
3291 struct ieee80211_vif
*vif
,
3292 struct ieee80211_sta
*sta
)
3294 struct iwl_priv
*priv
= hw
->priv
;
3295 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
3296 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
3300 sta_priv
->common
.sta_id
= IWL_INVALID_STATION
;
3302 IWL_DEBUG_INFO(priv
, "received request to add station %pM\n",
3305 atomic_set(&sta_priv
->pending_frames
, 0);
3306 if (vif
->type
== NL80211_IFTYPE_AP
)
3307 sta_priv
->client
= true;
3309 ret
= iwl_add_station_common(priv
, sta
->addr
, is_ap
, &sta
->ht_cap
,
3312 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
3314 /* Should we return success if return code is EEXIST ? */
3318 sta_priv
->common
.sta_id
= sta_id
;
3320 /* Initialize rate scaling */
3321 IWL_DEBUG_INFO(priv
, "Initializing rate scaling for station %pM\n",
3323 iwl_rs_rate_init(priv
, sta
, sta_id
);
3328 /*****************************************************************************
3332 *****************************************************************************/
3334 #ifdef CONFIG_IWLWIFI_DEBUG
3337 * The following adds a new attribute to the sysfs representation
3338 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3339 * used for controlling the debug level.
3341 * See the level definitions in iwl for details.
3343 * The debug_level being managed using sysfs below is a per device debug
3344 * level that is used instead of the global debug level if it (the per
3345 * device debug level) is set.
3347 static ssize_t
show_debug_level(struct device
*d
,
3348 struct device_attribute
*attr
, char *buf
)
3350 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3351 return sprintf(buf
, "0x%08X\n", iwl_get_debug_level(priv
));
3353 static ssize_t
store_debug_level(struct device
*d
,
3354 struct device_attribute
*attr
,
3355 const char *buf
, size_t count
)
3357 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3361 ret
= strict_strtoul(buf
, 0, &val
);
3363 IWL_ERR(priv
, "%s is not in hex or decimal form.\n", buf
);
3365 priv
->debug_level
= val
;
3366 if (iwl_alloc_traffic_mem(priv
))
3368 "Not enough memory to generate traffic log\n");
3370 return strnlen(buf
, count
);
3373 static DEVICE_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
3374 show_debug_level
, store_debug_level
);
3377 #endif /* CONFIG_IWLWIFI_DEBUG */
3380 static ssize_t
show_temperature(struct device
*d
,
3381 struct device_attribute
*attr
, char *buf
)
3383 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3385 if (!iwl_is_alive(priv
))
3388 return sprintf(buf
, "%d\n", priv
->temperature
);
3391 static DEVICE_ATTR(temperature
, S_IRUGO
, show_temperature
, NULL
);
3393 static ssize_t
show_tx_power(struct device
*d
,
3394 struct device_attribute
*attr
, char *buf
)
3396 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3398 if (!iwl_is_ready_rf(priv
))
3399 return sprintf(buf
, "off\n");
3401 return sprintf(buf
, "%d\n", priv
->tx_power_user_lmt
);
3404 static ssize_t
store_tx_power(struct device
*d
,
3405 struct device_attribute
*attr
,
3406 const char *buf
, size_t count
)
3408 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3412 ret
= strict_strtoul(buf
, 10, &val
);
3414 IWL_INFO(priv
, "%s is not in decimal form.\n", buf
);
3416 ret
= iwl_set_tx_power(priv
, val
, false);
3418 IWL_ERR(priv
, "failed setting tx power (0x%d).\n",
3426 static DEVICE_ATTR(tx_power
, S_IWUSR
| S_IRUGO
, show_tx_power
, store_tx_power
);
3428 static ssize_t
show_rts_ht_protection(struct device
*d
,
3429 struct device_attribute
*attr
, char *buf
)
3431 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3433 return sprintf(buf
, "%s\n",
3434 priv
->cfg
->use_rts_for_ht
? "RTS/CTS" : "CTS-to-self");
3437 static ssize_t
store_rts_ht_protection(struct device
*d
,
3438 struct device_attribute
*attr
,
3439 const char *buf
, size_t count
)
3441 struct iwl_priv
*priv
= dev_get_drvdata(d
);
3445 ret
= strict_strtoul(buf
, 10, &val
);
3447 IWL_INFO(priv
, "Input is not in decimal form.\n");
3449 if (!iwl_is_associated(priv
))
3450 priv
->cfg
->use_rts_for_ht
= val
? true : false;
3452 IWL_ERR(priv
, "Sta associated with AP - "
3453 "Change protection mechanism is not allowed\n");
3459 static DEVICE_ATTR(rts_ht_protection
, S_IWUSR
| S_IRUGO
,
3460 show_rts_ht_protection
, store_rts_ht_protection
);
3463 /*****************************************************************************
3465 * driver setup and teardown
3467 *****************************************************************************/
3469 static void iwl_setup_deferred_work(struct iwl_priv
*priv
)
3471 priv
->workqueue
= create_singlethread_workqueue(DRV_NAME
);
3473 init_waitqueue_head(&priv
->wait_command_queue
);
3475 INIT_WORK(&priv
->restart
, iwl_bg_restart
);
3476 INIT_WORK(&priv
->rx_replenish
, iwl_bg_rx_replenish
);
3477 INIT_WORK(&priv
->beacon_update
, iwl_bg_beacon_update
);
3478 INIT_WORK(&priv
->run_time_calib_work
, iwl_bg_run_time_calib_work
);
3479 INIT_DELAYED_WORK(&priv
->init_alive_start
, iwl_bg_init_alive_start
);
3480 INIT_DELAYED_WORK(&priv
->alive_start
, iwl_bg_alive_start
);
3482 iwl_setup_scan_deferred_work(priv
);
3484 if (priv
->cfg
->ops
->lib
->setup_deferred_work
)
3485 priv
->cfg
->ops
->lib
->setup_deferred_work(priv
);
3487 init_timer(&priv
->statistics_periodic
);
3488 priv
->statistics_periodic
.data
= (unsigned long)priv
;
3489 priv
->statistics_periodic
.function
= iwl_bg_statistics_periodic
;
3491 init_timer(&priv
->ucode_trace
);
3492 priv
->ucode_trace
.data
= (unsigned long)priv
;
3493 priv
->ucode_trace
.function
= iwl_bg_ucode_trace
;
3495 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
) {
3496 init_timer(&priv
->monitor_recover
);
3497 priv
->monitor_recover
.data
= (unsigned long)priv
;
3498 priv
->monitor_recover
.function
=
3499 priv
->cfg
->ops
->lib
->recover_from_tx_stall
;
3502 if (!priv
->cfg
->use_isr_legacy
)
3503 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3504 iwl_irq_tasklet
, (unsigned long)priv
);
3506 tasklet_init(&priv
->irq_tasklet
, (void (*)(unsigned long))
3507 iwl_irq_tasklet_legacy
, (unsigned long)priv
);
3510 static void iwl_cancel_deferred_work(struct iwl_priv
*priv
)
3512 if (priv
->cfg
->ops
->lib
->cancel_deferred_work
)
3513 priv
->cfg
->ops
->lib
->cancel_deferred_work(priv
);
3515 cancel_delayed_work_sync(&priv
->init_alive_start
);
3516 cancel_delayed_work(&priv
->scan_check
);
3517 cancel_work_sync(&priv
->start_internal_scan
);
3518 cancel_delayed_work(&priv
->alive_start
);
3519 cancel_work_sync(&priv
->beacon_update
);
3520 del_timer_sync(&priv
->statistics_periodic
);
3521 del_timer_sync(&priv
->ucode_trace
);
3522 if (priv
->cfg
->ops
->lib
->recover_from_tx_stall
)
3523 del_timer_sync(&priv
->monitor_recover
);
3526 static void iwl_init_hw_rates(struct iwl_priv
*priv
,
3527 struct ieee80211_rate
*rates
)
3531 for (i
= 0; i
< IWL_RATE_COUNT_LEGACY
; i
++) {
3532 rates
[i
].bitrate
= iwl_rates
[i
].ieee
* 5;
3533 rates
[i
].hw_value
= i
; /* Rate scaling will work on indexes */
3534 rates
[i
].hw_value_short
= i
;
3536 if ((i
>= IWL_FIRST_CCK_RATE
) && (i
<= IWL_LAST_CCK_RATE
)) {
3538 * If CCK != 1M then set short preamble rate flag.
3541 (iwl_rates
[i
].plcp
== IWL_RATE_1M_PLCP
) ?
3542 0 : IEEE80211_RATE_SHORT_PREAMBLE
;
3547 static int iwl_init_drv(struct iwl_priv
*priv
)
3551 priv
->ibss_beacon
= NULL
;
3553 spin_lock_init(&priv
->sta_lock
);
3554 spin_lock_init(&priv
->hcmd_lock
);
3556 INIT_LIST_HEAD(&priv
->free_frames
);
3558 mutex_init(&priv
->mutex
);
3559 mutex_init(&priv
->sync_cmd_mutex
);
3561 priv
->ieee_channels
= NULL
;
3562 priv
->ieee_rates
= NULL
;
3563 priv
->band
= IEEE80211_BAND_2GHZ
;
3565 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
3566 priv
->current_ht_config
.smps
= IEEE80211_SMPS_STATIC
;
3567 priv
->missed_beacon_threshold
= IWL_MISSED_BEACON_THRESHOLD_DEF
;
3568 priv
->_agn
.agg_tids_count
= 0;
3570 /* initialize force reset */
3571 priv
->force_reset
[IWL_RF_RESET
].reset_duration
=
3572 IWL_DELAY_NEXT_FORCE_RF_RESET
;
3573 priv
->force_reset
[IWL_FW_RESET
].reset_duration
=
3574 IWL_DELAY_NEXT_FORCE_FW_RELOAD
;
3576 /* Choose which receivers/antennas to use */
3577 if (priv
->cfg
->ops
->hcmd
->set_rxon_chain
)
3578 priv
->cfg
->ops
->hcmd
->set_rxon_chain(priv
);
3580 iwl_init_scan_params(priv
);
3582 /* Set the tx_power_user_lmt to the lowest power level
3583 * this value will get overwritten by channel max power avg
3585 priv
->tx_power_user_lmt
= IWLAGN_TX_POWER_TARGET_POWER_MIN
;
3587 ret
= iwl_init_channel_map(priv
);
3589 IWL_ERR(priv
, "initializing regulatory failed: %d\n", ret
);
3593 ret
= iwlcore_init_geos(priv
);
3595 IWL_ERR(priv
, "initializing geos failed: %d\n", ret
);
3596 goto err_free_channel_map
;
3598 iwl_init_hw_rates(priv
, priv
->ieee_rates
);
3602 err_free_channel_map
:
3603 iwl_free_channel_map(priv
);
3608 static void iwl_uninit_drv(struct iwl_priv
*priv
)
3610 iwl_calib_free_results(priv
);
3611 iwlcore_free_geos(priv
);
3612 iwl_free_channel_map(priv
);
3613 kfree(priv
->scan_cmd
);
3616 static struct attribute
*iwl_sysfs_entries
[] = {
3617 &dev_attr_temperature
.attr
,
3618 &dev_attr_tx_power
.attr
,
3619 &dev_attr_rts_ht_protection
.attr
,
3620 #ifdef CONFIG_IWLWIFI_DEBUG
3621 &dev_attr_debug_level
.attr
,
3626 static struct attribute_group iwl_attribute_group
= {
3627 .name
= NULL
, /* put in device directory */
3628 .attrs
= iwl_sysfs_entries
,
3631 static struct ieee80211_ops iwl_hw_ops
= {
3633 .start
= iwl_mac_start
,
3634 .stop
= iwl_mac_stop
,
3635 .add_interface
= iwl_mac_add_interface
,
3636 .remove_interface
= iwl_mac_remove_interface
,
3637 .config
= iwl_mac_config
,
3638 .configure_filter
= iwl_configure_filter
,
3639 .set_key
= iwl_mac_set_key
,
3640 .update_tkip_key
= iwl_mac_update_tkip_key
,
3641 .conf_tx
= iwl_mac_conf_tx
,
3642 .reset_tsf
= iwl_mac_reset_tsf
,
3643 .bss_info_changed
= iwl_bss_info_changed
,
3644 .ampdu_action
= iwl_mac_ampdu_action
,
3645 .hw_scan
= iwl_mac_hw_scan
,
3646 .sta_notify
= iwl_mac_sta_notify
,
3647 .sta_add
= iwlagn_mac_sta_add
,
3648 .sta_remove
= iwl_mac_sta_remove
,
3651 static int iwl_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3654 struct iwl_priv
*priv
;
3655 struct ieee80211_hw
*hw
;
3656 struct iwl_cfg
*cfg
= (struct iwl_cfg
*)(ent
->driver_data
);
3657 unsigned long flags
;
3659 u8 perm_addr
[ETH_ALEN
];
3661 /************************
3662 * 1. Allocating HW data
3663 ************************/
3665 /* Disabling hardware scan means that mac80211 will perform scans
3666 * "the hard way", rather than using device's scan. */
3667 if (cfg
->mod_params
->disable_hw_scan
) {
3668 if (iwl_debug_level
& IWL_DL_INFO
)
3669 dev_printk(KERN_DEBUG
, &(pdev
->dev
),
3670 "Disabling hw_scan\n");
3671 iwl_hw_ops
.hw_scan
= NULL
;
3674 hw
= iwl_alloc_all(cfg
, &iwl_hw_ops
);
3680 /* At this point both hw and priv are allocated. */
3682 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3684 IWL_DEBUG_INFO(priv
, "*** LOAD DRIVER ***\n");
3686 priv
->pci_dev
= pdev
;
3687 priv
->inta_mask
= CSR_INI_SET_MASK
;
3689 #ifdef CONFIG_IWLWIFI_DEBUG
3690 atomic_set(&priv
->restrict_refcnt
, 0);
3692 if (iwl_alloc_traffic_mem(priv
))
3693 IWL_ERR(priv
, "Not enough memory to generate traffic log\n");
3695 /**************************
3696 * 2. Initializing PCI bus
3697 **************************/
3698 if (pci_enable_device(pdev
)) {
3700 goto out_ieee80211_free_hw
;
3703 pci_set_master(pdev
);
3705 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(36));
3707 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(36));
3709 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3711 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3712 /* both attempts failed: */
3714 IWL_WARN(priv
, "No suitable DMA available.\n");
3715 goto out_pci_disable_device
;
3719 err
= pci_request_regions(pdev
, DRV_NAME
);
3721 goto out_pci_disable_device
;
3723 pci_set_drvdata(pdev
, priv
);
3726 /***********************
3727 * 3. Read REV register
3728 ***********************/
3729 priv
->hw_base
= pci_iomap(pdev
, 0, 0);
3730 if (!priv
->hw_base
) {
3732 goto out_pci_release_regions
;
3735 IWL_DEBUG_INFO(priv
, "pci_resource_len = 0x%08llx\n",
3736 (unsigned long long) pci_resource_len(pdev
, 0));
3737 IWL_DEBUG_INFO(priv
, "pci_resource_base = %p\n", priv
->hw_base
);
3739 /* these spin locks will be used in apm_ops.init and EEPROM access
3740 * we should init now
3742 spin_lock_init(&priv
->reg_lock
);
3743 spin_lock_init(&priv
->lock
);
3746 * stop and reset the on-board processor just in case it is in a
3747 * strange state ... like being left stranded by a primary kernel
3748 * and this is now the kdump kernel trying to start up
3750 iwl_write32(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_NEVO_RESET
);
3752 iwl_hw_detect(priv
);
3753 IWL_INFO(priv
, "Detected %s, REV=0x%X\n",
3754 priv
->cfg
->name
, priv
->hw_rev
);
3756 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3757 * PCI Tx retries from interfering with C3 CPU state */
3758 pci_write_config_byte(pdev
, PCI_CFG_RETRY_TIMEOUT
, 0x00);
3760 iwl_prepare_card_hw(priv
);
3761 if (!priv
->hw_ready
) {
3762 IWL_WARN(priv
, "Failed, HW not ready\n");
3769 /* Read the EEPROM */
3770 err
= iwl_eeprom_init(priv
);
3772 IWL_ERR(priv
, "Unable to init EEPROM\n");
3775 err
= iwl_eeprom_check_version(priv
);
3777 goto out_free_eeprom
;
3779 /* extract MAC Address */
3780 iwl_eeprom_get_mac(priv
, perm_addr
);
3781 IWL_DEBUG_INFO(priv
, "MAC address: %pM\n", perm_addr
);
3782 SET_IEEE80211_PERM_ADDR(priv
->hw
, perm_addr
);
3784 /************************
3785 * 5. Setup HW constants
3786 ************************/
3787 if (iwl_set_hw_params(priv
)) {
3788 IWL_ERR(priv
, "failed to set hw parameters\n");
3789 goto out_free_eeprom
;
3792 /*******************
3794 *******************/
3796 err
= iwl_init_drv(priv
);
3798 goto out_free_eeprom
;
3799 /* At this point both hw and priv are initialized. */
3801 /********************
3803 ********************/
3804 spin_lock_irqsave(&priv
->lock
, flags
);
3805 iwl_disable_interrupts(priv
);
3806 spin_unlock_irqrestore(&priv
->lock
, flags
);
3808 pci_enable_msi(priv
->pci_dev
);
3810 iwl_alloc_isr_ict(priv
);
3811 err
= request_irq(priv
->pci_dev
->irq
, priv
->cfg
->ops
->lib
->isr
,
3812 IRQF_SHARED
, DRV_NAME
, priv
);
3814 IWL_ERR(priv
, "Error allocating IRQ %d\n", priv
->pci_dev
->irq
);
3815 goto out_disable_msi
;
3817 err
= sysfs_create_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3819 IWL_ERR(priv
, "failed to create sysfs device attributes\n");
3823 iwl_setup_deferred_work(priv
);
3824 iwl_setup_rx_handlers(priv
);
3826 /*********************************************
3827 * 8. Enable interrupts and read RFKILL state
3828 *********************************************/
3830 /* enable interrupts if needed: hw bug w/a */
3831 pci_read_config_word(priv
->pci_dev
, PCI_COMMAND
, &pci_cmd
);
3832 if (pci_cmd
& PCI_COMMAND_INTX_DISABLE
) {
3833 pci_cmd
&= ~PCI_COMMAND_INTX_DISABLE
;
3834 pci_write_config_word(priv
->pci_dev
, PCI_COMMAND
, pci_cmd
);
3837 iwl_enable_interrupts(priv
);
3839 /* If platform's RF_KILL switch is NOT set to KILL */
3840 if (iwl_read32(priv
, CSR_GP_CNTRL
) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW
)
3841 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3843 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
3845 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
3846 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
3848 iwl_power_initialize(priv
);
3849 iwl_tt_initialize(priv
);
3851 init_completion(&priv
->_agn
.firmware_loading_complete
);
3853 err
= iwl_request_firmware(priv
, true);
3855 goto out_remove_sysfs
;
3860 destroy_workqueue(priv
->workqueue
);
3861 priv
->workqueue
= NULL
;
3862 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3864 free_irq(priv
->pci_dev
->irq
, priv
);
3865 iwl_free_isr_ict(priv
);
3867 pci_disable_msi(priv
->pci_dev
);
3868 iwl_uninit_drv(priv
);
3870 iwl_eeprom_free(priv
);
3872 pci_iounmap(pdev
, priv
->hw_base
);
3873 out_pci_release_regions
:
3874 pci_set_drvdata(pdev
, NULL
);
3875 pci_release_regions(pdev
);
3876 out_pci_disable_device
:
3877 pci_disable_device(pdev
);
3878 out_ieee80211_free_hw
:
3879 iwl_free_traffic_mem(priv
);
3880 ieee80211_free_hw(priv
->hw
);
3885 static void __devexit
iwl_pci_remove(struct pci_dev
*pdev
)
3887 struct iwl_priv
*priv
= pci_get_drvdata(pdev
);
3888 unsigned long flags
;
3893 wait_for_completion(&priv
->_agn
.firmware_loading_complete
);
3895 IWL_DEBUG_INFO(priv
, "*** UNLOAD DRIVER ***\n");
3897 iwl_dbgfs_unregister(priv
);
3898 sysfs_remove_group(&pdev
->dev
.kobj
, &iwl_attribute_group
);
3900 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3901 * to be called and iwl_down since we are removing the device
3902 * we need to set STATUS_EXIT_PENDING bit.
3904 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
3905 if (priv
->mac80211_registered
) {
3906 ieee80211_unregister_hw(priv
->hw
);
3907 priv
->mac80211_registered
= 0;
3913 * Make sure device is reset to low power before unloading driver.
3914 * This may be redundant with iwl_down(), but there are paths to
3915 * run iwl_down() without calling apm_ops.stop(), and there are
3916 * paths to avoid running iwl_down() at all before leaving driver.
3917 * This (inexpensive) call *makes sure* device is reset.
3919 priv
->cfg
->ops
->lib
->apm_ops
.stop(priv
);
3923 /* make sure we flush any pending irq or
3924 * tasklet for the driver
3926 spin_lock_irqsave(&priv
->lock
, flags
);
3927 iwl_disable_interrupts(priv
);
3928 spin_unlock_irqrestore(&priv
->lock
, flags
);
3930 iwl_synchronize_irq(priv
);
3932 iwl_dealloc_ucode_pci(priv
);
3935 iwlagn_rx_queue_free(priv
, &priv
->rxq
);
3936 iwlagn_hw_txq_ctx_free(priv
);
3938 iwl_eeprom_free(priv
);
3941 /*netif_stop_queue(dev); */
3942 flush_workqueue(priv
->workqueue
);
3944 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3945 * priv->workqueue... so we can't take down the workqueue
3947 destroy_workqueue(priv
->workqueue
);
3948 priv
->workqueue
= NULL
;
3949 iwl_free_traffic_mem(priv
);
3951 free_irq(priv
->pci_dev
->irq
, priv
);
3952 pci_disable_msi(priv
->pci_dev
);
3953 pci_iounmap(pdev
, priv
->hw_base
);
3954 pci_release_regions(pdev
);
3955 pci_disable_device(pdev
);
3956 pci_set_drvdata(pdev
, NULL
);
3958 iwl_uninit_drv(priv
);
3960 iwl_free_isr_ict(priv
);
3962 if (priv
->ibss_beacon
)
3963 dev_kfree_skb(priv
->ibss_beacon
);
3965 ieee80211_free_hw(priv
->hw
);
3969 /*****************************************************************************
3971 * driver and module entry point
3973 *****************************************************************************/
3975 /* Hardware specific file defines the PCI IDs table for that hardware module */
3976 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids
) = {
3977 #ifdef CONFIG_IWL4965
3978 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3979 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID
, iwl4965_agn_cfg
)},
3980 #endif /* CONFIG_IWL4965 */
3981 #ifdef CONFIG_IWL5000
3982 /* 5100 Series WiFi */
3983 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg
)}, /* Mini Card */
3984 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg
)}, /* Half Mini Card */
3985 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg
)}, /* Mini Card */
3986 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg
)}, /* Half Mini Card */
3987 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg
)}, /* Mini Card */
3988 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg
)}, /* Half Mini Card */
3989 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg
)}, /* Mini Card */
3990 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg
)}, /* Half Mini Card */
3991 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg
)}, /* Mini Card */
3992 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg
)}, /* Half Mini Card */
3993 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg
)}, /* Mini Card */
3994 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg
)}, /* Half Mini Card */
3995 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg
)}, /* Mini Card */
3996 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg
)}, /* Half Mini Card */
3997 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg
)}, /* Mini Card */
3998 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg
)}, /* Half Mini Card */
3999 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg
)}, /* Mini Card */
4000 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg
)}, /* Half Mini Card */
4001 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg
)}, /* Mini Card */
4002 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg
)}, /* Half Mini Card */
4003 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg
)}, /* Mini Card */
4004 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg
)}, /* Half Mini Card */
4005 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg
)}, /* Mini Card */
4006 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg
)}, /* Half Mini Card */
4008 /* 5300 Series WiFi */
4009 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg
)}, /* Mini Card */
4010 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg
)}, /* Half Mini Card */
4011 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg
)}, /* Mini Card */
4012 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg
)}, /* Half Mini Card */
4013 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg
)}, /* Mini Card */
4014 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg
)}, /* Half Mini Card */
4015 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg
)}, /* Mini Card */
4016 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg
)}, /* Half Mini Card */
4017 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg
)}, /* Mini Card */
4018 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg
)}, /* Half Mini Card */
4019 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg
)}, /* Mini Card */
4020 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg
)}, /* Half Mini Card */
4022 /* 5350 Series WiFi/WiMax */
4023 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg
)}, /* Mini Card */
4024 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg
)}, /* Mini Card */
4025 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg
)}, /* Mini Card */
4027 /* 5150 Series Wifi/WiMax */
4028 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg
)}, /* Mini Card */
4029 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg
)}, /* Half Mini Card */
4030 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg
)}, /* Mini Card */
4031 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg
)}, /* Half Mini Card */
4032 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg
)}, /* Mini Card */
4033 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg
)}, /* Half Mini Card */
4035 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg
)}, /* Mini Card */
4036 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg
)}, /* Half Mini Card */
4037 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg
)}, /* Mini Card */
4038 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg
)}, /* Half Mini Card */
4041 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg
)},
4042 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg
)},
4043 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg
)},
4044 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg
)},
4045 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg
)},
4046 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg
)},
4047 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg
)},
4048 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg
)},
4049 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg
)},
4050 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg
)},
4052 /* 6x00 Series Gen2a */
4053 {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg
)},
4054 {IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg
)},
4055 {IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg
)},
4056 {IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg
)},
4057 {IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg
)},
4058 {IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg
)},
4059 {IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg
)},
4060 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg
)},
4061 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg
)},
4062 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg
)},
4063 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg
)},
4064 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg
)},
4065 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg
)},
4066 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg
)},
4068 /* 6x00 Series Gen2b */
4069 {IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg
)},
4070 {IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg
)},
4071 {IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg
)},
4072 {IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg
)},
4073 {IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg
)},
4074 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg
)},
4075 {IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg
)},
4076 {IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg
)},
4077 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg
)},
4078 {IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg
)},
4079 {IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg
)},
4080 {IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg
)},
4081 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg
)},
4082 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg
)},
4083 {IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg
)},
4084 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg
)},
4085 {IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg
)},
4086 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg
)},
4087 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg
)},
4088 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg
)},
4089 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg
)},
4090 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg
)},
4091 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg
)},
4092 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg
)},
4093 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg
)},
4094 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg
)},
4095 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg
)},
4096 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg
)},
4098 /* 6x50 WiFi/WiMax Series */
4099 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg
)},
4100 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg
)},
4101 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg
)},
4102 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg
)},
4103 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg
)},
4104 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg
)},
4106 /* 1000 Series WiFi */
4107 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg
)},
4108 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg
)},
4109 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg
)},
4110 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg
)},
4111 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg
)},
4112 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg
)},
4113 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg
)},
4114 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg
)},
4115 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg
)},
4116 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg
)},
4117 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg
)},
4118 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg
)},
4119 #endif /* CONFIG_IWL5000 */
4123 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);
4125 static struct pci_driver iwl_driver
= {
4127 .id_table
= iwl_hw_card_ids
,
4128 .probe
= iwl_pci_probe
,
4129 .remove
= __devexit_p(iwl_pci_remove
),
4131 .suspend
= iwl_pci_suspend
,
4132 .resume
= iwl_pci_resume
,
4136 static int __init
iwl_init(void)
4140 printk(KERN_INFO DRV_NAME
": " DRV_DESCRIPTION
", " DRV_VERSION
"\n");
4141 printk(KERN_INFO DRV_NAME
": " DRV_COPYRIGHT
"\n");
4143 ret
= iwlagn_rate_control_register();
4145 printk(KERN_ERR DRV_NAME
4146 "Unable to register rate control algorithm: %d\n", ret
);
4150 ret
= pci_register_driver(&iwl_driver
);
4152 printk(KERN_ERR DRV_NAME
"Unable to initialize PCI module\n");
4153 goto error_register
;
4159 iwlagn_rate_control_unregister();
4163 static void __exit
iwl_exit(void)
4165 pci_unregister_driver(&iwl_driver
);
4166 iwlagn_rate_control_unregister();
4169 module_exit(iwl_exit
);
4170 module_init(iwl_init
);
4172 #ifdef CONFIG_IWLWIFI_DEBUG
4173 module_param_named(debug50
, iwl_debug_level
, uint
, S_IRUGO
);
4174 MODULE_PARM_DESC(debug50
, "50XX debug output mask (deprecated)");
4175 module_param_named(debug
, iwl_debug_level
, uint
, S_IRUGO
| S_IWUSR
);
4176 MODULE_PARM_DESC(debug
, "debug output mask");
4179 module_param_named(swcrypto50
, iwlagn_mod_params
.sw_crypto
, bool, S_IRUGO
);
4180 MODULE_PARM_DESC(swcrypto50
,
4181 "using crypto in software (default 0 [hardware]) (deprecated)");
4182 module_param_named(swcrypto
, iwlagn_mod_params
.sw_crypto
, int, S_IRUGO
);
4183 MODULE_PARM_DESC(swcrypto
, "using crypto in software (default 0 [hardware])");
4184 module_param_named(queues_num50
,
4185 iwlagn_mod_params
.num_of_queues
, int, S_IRUGO
);
4186 MODULE_PARM_DESC(queues_num50
,
4187 "number of hw queues in 50xx series (deprecated)");
4188 module_param_named(queues_num
, iwlagn_mod_params
.num_of_queues
, int, S_IRUGO
);
4189 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
4190 module_param_named(11n_disable50
, iwlagn_mod_params
.disable_11n
, int, S_IRUGO
);
4191 MODULE_PARM_DESC(11n_disable50
, "disable 50XX 11n functionality (deprecated)");
4192 module_param_named(11n_disable
, iwlagn_mod_params
.disable_11n
, int, S_IRUGO
);
4193 MODULE_PARM_DESC(11n_disable
, "disable 11n functionality");
4194 module_param_named(amsdu_size_8K50
, iwlagn_mod_params
.amsdu_size_8K
,
4196 MODULE_PARM_DESC(amsdu_size_8K50
,
4197 "enable 8K amsdu size in 50XX series (deprecated)");
4198 module_param_named(amsdu_size_8K
, iwlagn_mod_params
.amsdu_size_8K
,
4200 MODULE_PARM_DESC(amsdu_size_8K
, "enable 8K amsdu size");
4201 module_param_named(fw_restart50
, iwlagn_mod_params
.restart_fw
, int, S_IRUGO
);
4202 MODULE_PARM_DESC(fw_restart50
,
4203 "restart firmware in case of error (deprecated)");
4204 module_param_named(fw_restart
, iwlagn_mod_params
.restart_fw
, int, S_IRUGO
);
4205 MODULE_PARM_DESC(fw_restart
, "restart firmware in case of error");
4207 disable_hw_scan
, iwlagn_mod_params
.disable_hw_scan
, int, S_IRUGO
);
4208 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4210 module_param_named(ucode_alternative
, iwlagn_wanted_ucode_alternative
, int,
4212 MODULE_PARM_DESC(ucode_alternative
,
4213 "specify ucode alternative to use from ucode file");