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iwlwifi: add option to disable 5GHz band
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
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.
11 *
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
15 * more details.
16 *
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
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-io.h"
50 #include "iwl-agn-calib.h"
51 #include "iwl-agn.h"
52 #include "iwl-trans.h"
53 #include "iwl-op-mode.h"
54 #include "iwl-drv.h"
55 #include "iwl-modparams.h"
56
57 /******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
63 /*
64 * module name, copyright, version, etc.
65 */
66 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
67
68 #ifdef CONFIG_IWLWIFI_DEBUG
69 #define VD "d"
70 #else
71 #define VD
72 #endif
73
74 #define DRV_VERSION IWLWIFI_VERSION VD
75
76
77 MODULE_DESCRIPTION(DRV_DESCRIPTION);
78 MODULE_VERSION(DRV_VERSION);
79 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
80 MODULE_LICENSE("GPL");
81 MODULE_ALIAS("iwlagn");
82
83 void iwl_update_chain_flags(struct iwl_priv *priv)
84 {
85 struct iwl_rxon_context *ctx;
86
87 for_each_context(priv, ctx) {
88 iwlagn_set_rxon_chain(priv, ctx);
89 if (ctx->active.rx_chain != ctx->staging.rx_chain)
90 iwlagn_commit_rxon(priv, ctx);
91 }
92 }
93
94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
96 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
98 {
99 u16 tim_idx;
100 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
101
102 /*
103 * The index is relative to frame start but we start looking at the
104 * variable-length part of the beacon.
105 */
106 tim_idx = mgmt->u.beacon.variable - beacon;
107
108 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
109 while ((tim_idx < (frame_size - 2)) &&
110 (beacon[tim_idx] != WLAN_EID_TIM))
111 tim_idx += beacon[tim_idx+1] + 2;
112
113 /* If TIM field was found, set variables */
114 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
115 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
116 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
117 } else
118 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
119 }
120
121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
122 {
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
126 .flags = CMD_SYNC,
127 };
128 struct ieee80211_tx_info *info;
129 u32 frame_size;
130 u32 rate_flags;
131 u32 rate;
132
133 /*
134 * We have to set up the TX command, the TX Beacon command, and the
135 * beacon contents.
136 */
137
138 lockdep_assert_held(&priv->mutex);
139
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
142 return 0;
143 }
144
145 if (WARN_ON(!priv->beacon_skb))
146 return -EINVAL;
147
148 /* Allocate beacon command */
149 if (!priv->beacon_cmd)
150 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
151 tx_beacon_cmd = priv->beacon_cmd;
152 if (!tx_beacon_cmd)
153 return -ENOMEM;
154
155 frame_size = priv->beacon_skb->len;
156
157 /* Set up TX command fields */
158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
160 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
161 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
162 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
163
164 /* Set up TX beacon command fields */
165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
166 frame_size);
167
168 /* Set up packet rate and flags */
169 info = IEEE80211_SKB_CB(priv->beacon_skb);
170
171 /*
172 * Let's set up the rate at least somewhat correctly;
173 * it will currently not actually be used by the uCode,
174 * it uses the broadcast station's rate instead.
175 */
176 if (info->control.rates[0].idx < 0 ||
177 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
178 rate = 0;
179 else
180 rate = info->control.rates[0].idx;
181
182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
183 priv->hw_params.valid_tx_ant);
184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
185
186 /* In mac80211, rates for 5 GHz start at 0 */
187 if (info->band == IEEE80211_BAND_5GHZ)
188 rate += IWL_FIRST_OFDM_RATE;
189 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
190 rate_flags |= RATE_MCS_CCK_MSK;
191
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
194
195 /* Submit command */
196 cmd.len[0] = sizeof(*tx_beacon_cmd);
197 cmd.data[0] = tx_beacon_cmd;
198 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
199 cmd.len[1] = frame_size;
200 cmd.data[1] = priv->beacon_skb->data;
201 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
202
203 return iwl_dvm_send_cmd(priv, &cmd);
204 }
205
206 static void iwl_bg_beacon_update(struct work_struct *work)
207 {
208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
210 struct sk_buff *beacon;
211
212 mutex_lock(&priv->mutex);
213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
215 goto out;
216 }
217
218 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
219 /*
220 * The ucode will send beacon notifications even in
221 * IBSS mode, but we don't want to process them. But
222 * we need to defer the type check to here due to
223 * requiring locking around the beacon_ctx access.
224 */
225 goto out;
226 }
227
228 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
229 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
230 if (!beacon) {
231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
232 goto out;
233 }
234
235 /* new beacon skb is allocated every time; dispose previous.*/
236 dev_kfree_skb(priv->beacon_skb);
237
238 priv->beacon_skb = beacon;
239
240 iwlagn_send_beacon_cmd(priv);
241 out:
242 mutex_unlock(&priv->mutex);
243 }
244
245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
246 {
247 struct iwl_priv *priv =
248 container_of(work, struct iwl_priv, bt_runtime_config);
249
250 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
251 return;
252
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv))
255 return;
256 iwlagn_send_advance_bt_config(priv);
257 }
258
259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
260 {
261 struct iwl_priv *priv =
262 container_of(work, struct iwl_priv, bt_full_concurrency);
263 struct iwl_rxon_context *ctx;
264
265 mutex_lock(&priv->mutex);
266
267 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
268 goto out;
269
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv))
272 goto out;
273
274 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
275 priv->bt_full_concurrent ?
276 "full concurrency" : "3-wire");
277
278 /*
279 * LQ & RXON updated cmds must be sent before BT Config cmd
280 * to avoid 3-wire collisions
281 */
282 for_each_context(priv, ctx) {
283 iwlagn_set_rxon_chain(priv, ctx);
284 iwlagn_commit_rxon(priv, ctx);
285 }
286
287 iwlagn_send_advance_bt_config(priv);
288 out:
289 mutex_unlock(&priv->mutex);
290 }
291
292 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
293 {
294 struct iwl_statistics_cmd statistics_cmd = {
295 .configuration_flags =
296 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
297 };
298
299 if (flags & CMD_ASYNC)
300 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
301 CMD_ASYNC,
302 sizeof(struct iwl_statistics_cmd),
303 &statistics_cmd);
304 else
305 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
306 CMD_SYNC,
307 sizeof(struct iwl_statistics_cmd),
308 &statistics_cmd);
309 }
310
311 /**
312 * iwl_bg_statistics_periodic - Timer callback to queue statistics
313 *
314 * This callback is provided in order to send a statistics request.
315 *
316 * This timer function is continually reset to execute within
317 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
318 * was received. We need to ensure we receive the statistics in order
319 * to update the temperature used for calibrating the TXPOWER.
320 */
321 static void iwl_bg_statistics_periodic(unsigned long data)
322 {
323 struct iwl_priv *priv = (struct iwl_priv *)data;
324
325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
326 return;
327
328 /* dont send host command if rf-kill is on */
329 if (!iwl_is_ready_rf(priv))
330 return;
331
332 iwl_send_statistics_request(priv, CMD_ASYNC, false);
333 }
334
335
336 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
337 u32 start_idx, u32 num_events,
338 u32 capacity, u32 mode)
339 {
340 u32 i;
341 u32 ptr; /* SRAM byte address of log data */
342 u32 ev, time, data; /* event log data */
343 unsigned long reg_flags;
344
345 if (mode == 0)
346 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
347 else
348 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
349
350 /* Make sure device is powered up for SRAM reads */
351 spin_lock_irqsave(&priv->trans->reg_lock, reg_flags);
352 if (unlikely(!iwl_grab_nic_access(priv->trans))) {
353 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
354 return;
355 }
356
357 /* Set starting address; reads will auto-increment */
358 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
359
360 /*
361 * Refuse to read more than would have fit into the log from
362 * the current start_idx. This used to happen due to the race
363 * described below, but now WARN because the code below should
364 * prevent it from happening here.
365 */
366 if (WARN_ON(num_events > capacity - start_idx))
367 num_events = capacity - start_idx;
368
369 /*
370 * "time" is actually "data" for mode 0 (no timestamp).
371 * place event id # at far right for easier visual parsing.
372 */
373 for (i = 0; i < num_events; i++) {
374 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
375 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
376 if (mode == 0) {
377 trace_iwlwifi_dev_ucode_cont_event(
378 priv->trans->dev, 0, time, ev);
379 } else {
380 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
381 trace_iwlwifi_dev_ucode_cont_event(
382 priv->trans->dev, time, data, ev);
383 }
384 }
385 /* Allow device to power down */
386 iwl_release_nic_access(priv->trans);
387 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
388 }
389
390 static void iwl_continuous_event_trace(struct iwl_priv *priv)
391 {
392 u32 capacity; /* event log capacity in # entries */
393 struct {
394 u32 capacity;
395 u32 mode;
396 u32 wrap_counter;
397 u32 write_counter;
398 } __packed read;
399 u32 base; /* SRAM byte address of event log header */
400 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
401 u32 num_wraps; /* # times uCode wrapped to top of log */
402 u32 next_entry; /* index of next entry to be written by uCode */
403
404 base = priv->device_pointers.log_event_table;
405 if (iwlagn_hw_valid_rtc_data_addr(base)) {
406 iwl_read_targ_mem_words(priv->trans, base, &read, sizeof(read));
407 capacity = read.capacity;
408 mode = read.mode;
409 num_wraps = read.wrap_counter;
410 next_entry = read.write_counter;
411 } else
412 return;
413
414 /*
415 * Unfortunately, the uCode doesn't use temporary variables.
416 * Therefore, it can happen that we read next_entry == capacity,
417 * which really means next_entry == 0.
418 */
419 if (unlikely(next_entry == capacity))
420 next_entry = 0;
421 /*
422 * Additionally, the uCode increases the write pointer before
423 * the wraps counter, so if the write pointer is smaller than
424 * the old write pointer (wrap occurred) but we read that no
425 * wrap occurred, we actually read between the next_entry and
426 * num_wraps update (this does happen in practice!!) -- take
427 * that into account by increasing num_wraps.
428 */
429 if (unlikely(next_entry < priv->event_log.next_entry &&
430 num_wraps == priv->event_log.num_wraps))
431 num_wraps++;
432
433 if (num_wraps == priv->event_log.num_wraps) {
434 iwl_print_cont_event_trace(
435 priv, base, priv->event_log.next_entry,
436 next_entry - priv->event_log.next_entry,
437 capacity, mode);
438
439 priv->event_log.non_wraps_count++;
440 } else {
441 if (num_wraps - priv->event_log.num_wraps > 1)
442 priv->event_log.wraps_more_count++;
443 else
444 priv->event_log.wraps_once_count++;
445
446 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
447 num_wraps - priv->event_log.num_wraps,
448 next_entry, priv->event_log.next_entry);
449
450 if (next_entry < priv->event_log.next_entry) {
451 iwl_print_cont_event_trace(
452 priv, base, priv->event_log.next_entry,
453 capacity - priv->event_log.next_entry,
454 capacity, mode);
455
456 iwl_print_cont_event_trace(
457 priv, base, 0, next_entry, capacity, mode);
458 } else {
459 iwl_print_cont_event_trace(
460 priv, base, next_entry,
461 capacity - next_entry,
462 capacity, mode);
463
464 iwl_print_cont_event_trace(
465 priv, base, 0, next_entry, capacity, mode);
466 }
467 }
468
469 priv->event_log.num_wraps = num_wraps;
470 priv->event_log.next_entry = next_entry;
471 }
472
473 /**
474 * iwl_bg_ucode_trace - Timer callback to log ucode event
475 *
476 * The timer is continually set to execute every
477 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
478 * this function is to perform continuous uCode event logging operation
479 * if enabled
480 */
481 static void iwl_bg_ucode_trace(unsigned long data)
482 {
483 struct iwl_priv *priv = (struct iwl_priv *)data;
484
485 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
486 return;
487
488 if (priv->event_log.ucode_trace) {
489 iwl_continuous_event_trace(priv);
490 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
491 mod_timer(&priv->ucode_trace,
492 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
493 }
494 }
495
496 static void iwl_bg_tx_flush(struct work_struct *work)
497 {
498 struct iwl_priv *priv =
499 container_of(work, struct iwl_priv, tx_flush);
500
501 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
502 return;
503
504 /* do nothing if rf-kill is on */
505 if (!iwl_is_ready_rf(priv))
506 return;
507
508 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
509 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
510 }
511
512 /*
513 * queue/FIFO/AC mapping definitions
514 */
515
516 #define IWL_TX_FIFO_BK 0 /* shared */
517 #define IWL_TX_FIFO_BE 1
518 #define IWL_TX_FIFO_VI 2 /* shared */
519 #define IWL_TX_FIFO_VO 3
520 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
521 #define IWL_TX_FIFO_BE_IPAN 4
522 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
523 #define IWL_TX_FIFO_VO_IPAN 5
524 /* re-uses the VO FIFO, uCode will properly flush/schedule */
525 #define IWL_TX_FIFO_AUX 5
526 #define IWL_TX_FIFO_UNUSED -1
527
528 #define IWLAGN_CMD_FIFO_NUM 7
529
530 /*
531 * This queue number is required for proper operation
532 * because the ucode will stop/start the scheduler as
533 * required.
534 */
535 #define IWL_IPAN_MCAST_QUEUE 8
536
537 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
538 IWL_TX_FIFO_VO,
539 IWL_TX_FIFO_VI,
540 IWL_TX_FIFO_BE,
541 IWL_TX_FIFO_BK,
542 IWLAGN_CMD_FIFO_NUM,
543 };
544
545 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
546 IWL_TX_FIFO_VO,
547 IWL_TX_FIFO_VI,
548 IWL_TX_FIFO_BE,
549 IWL_TX_FIFO_BK,
550 IWL_TX_FIFO_BK_IPAN,
551 IWL_TX_FIFO_BE_IPAN,
552 IWL_TX_FIFO_VI_IPAN,
553 IWL_TX_FIFO_VO_IPAN,
554 IWL_TX_FIFO_BE_IPAN,
555 IWLAGN_CMD_FIFO_NUM,
556 IWL_TX_FIFO_AUX,
557 };
558
559 static const u8 iwlagn_bss_ac_to_fifo[] = {
560 IWL_TX_FIFO_VO,
561 IWL_TX_FIFO_VI,
562 IWL_TX_FIFO_BE,
563 IWL_TX_FIFO_BK,
564 };
565
566 static const u8 iwlagn_bss_ac_to_queue[] = {
567 0, 1, 2, 3,
568 };
569
570 static const u8 iwlagn_pan_ac_to_fifo[] = {
571 IWL_TX_FIFO_VO_IPAN,
572 IWL_TX_FIFO_VI_IPAN,
573 IWL_TX_FIFO_BE_IPAN,
574 IWL_TX_FIFO_BK_IPAN,
575 };
576
577 static const u8 iwlagn_pan_ac_to_queue[] = {
578 7, 6, 5, 4,
579 };
580
581 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
582 {
583 int i;
584
585 /*
586 * The default context is always valid,
587 * the PAN context depends on uCode.
588 */
589 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
590 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
591 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
592
593 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
594 priv->contexts[i].ctxid = i;
595
596 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
597 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
598 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
599 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
600 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
601 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
602 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
603 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
604 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
605 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
606 BIT(NL80211_IFTYPE_ADHOC);
607 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
608 BIT(NL80211_IFTYPE_STATION);
609 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
610 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
611 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
612 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
613 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
614 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
615 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
616 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
617
618 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
619 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
620 REPLY_WIPAN_RXON_TIMING;
621 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
622 REPLY_WIPAN_RXON_ASSOC;
623 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
624 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
625 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
626 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
627 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
628 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
629 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
630
631 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
632 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
633 BIT(NL80211_IFTYPE_P2P_CLIENT) |
634 BIT(NL80211_IFTYPE_P2P_GO);
635
636 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
637 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
638 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
639 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
640 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
641 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
642 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
643 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
644
645 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
646 }
647
648 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
649 {
650 struct iwl_ct_kill_config cmd;
651 struct iwl_ct_kill_throttling_config adv_cmd;
652 int ret = 0;
653
654 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
655 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
656
657 priv->thermal_throttle.ct_kill_toggle = false;
658
659 if (priv->cfg->base_params->support_ct_kill_exit) {
660 adv_cmd.critical_temperature_enter =
661 cpu_to_le32(priv->hw_params.ct_kill_threshold);
662 adv_cmd.critical_temperature_exit =
663 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
664
665 ret = iwl_dvm_send_cmd_pdu(priv,
666 REPLY_CT_KILL_CONFIG_CMD,
667 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
668 if (ret)
669 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
670 else
671 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
672 "succeeded, critical temperature enter is %d,"
673 "exit is %d\n",
674 priv->hw_params.ct_kill_threshold,
675 priv->hw_params.ct_kill_exit_threshold);
676 } else {
677 cmd.critical_temperature_R =
678 cpu_to_le32(priv->hw_params.ct_kill_threshold);
679
680 ret = iwl_dvm_send_cmd_pdu(priv,
681 REPLY_CT_KILL_CONFIG_CMD,
682 CMD_SYNC, sizeof(cmd), &cmd);
683 if (ret)
684 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
685 else
686 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
687 "succeeded, "
688 "critical temperature is %d\n",
689 priv->hw_params.ct_kill_threshold);
690 }
691 }
692
693 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
694 {
695 struct iwl_calib_cfg_cmd calib_cfg_cmd;
696 struct iwl_host_cmd cmd = {
697 .id = CALIBRATION_CFG_CMD,
698 .len = { sizeof(struct iwl_calib_cfg_cmd), },
699 .data = { &calib_cfg_cmd, },
700 };
701
702 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
703 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
704 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
705
706 return iwl_dvm_send_cmd(priv, &cmd);
707 }
708
709
710 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
711 {
712 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
713 .valid = cpu_to_le32(valid_tx_ant),
714 };
715
716 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
717 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
718 return iwl_dvm_send_cmd_pdu(priv,
719 TX_ANT_CONFIGURATION_CMD,
720 CMD_SYNC,
721 sizeof(struct iwl_tx_ant_config_cmd),
722 &tx_ant_cmd);
723 } else {
724 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
725 return -EOPNOTSUPP;
726 }
727 }
728
729 void iwl_send_bt_config(struct iwl_priv *priv)
730 {
731 struct iwl_bt_cmd bt_cmd = {
732 .lead_time = BT_LEAD_TIME_DEF,
733 .max_kill = BT_MAX_KILL_DEF,
734 .kill_ack_mask = 0,
735 .kill_cts_mask = 0,
736 };
737
738 if (!iwlwifi_mod_params.bt_coex_active)
739 bt_cmd.flags = BT_COEX_DISABLE;
740 else
741 bt_cmd.flags = BT_COEX_ENABLE;
742
743 priv->bt_enable_flag = bt_cmd.flags;
744 IWL_DEBUG_INFO(priv, "BT coex %s\n",
745 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
746
747 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
748 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
749 IWL_ERR(priv, "failed to send BT Coex Config\n");
750 }
751
752 /**
753 * iwl_alive_start - called after REPLY_ALIVE notification received
754 * from protocol/runtime uCode (initialization uCode's
755 * Alive gets handled by iwl_init_alive_start()).
756 */
757 int iwl_alive_start(struct iwl_priv *priv)
758 {
759 int ret = 0;
760 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
761
762 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
763
764 /* After the ALIVE response, we can send host commands to the uCode */
765 set_bit(STATUS_ALIVE, &priv->status);
766
767 if (iwl_is_rfkill(priv))
768 return -ERFKILL;
769
770 if (priv->event_log.ucode_trace) {
771 /* start collecting data now */
772 mod_timer(&priv->ucode_trace, jiffies);
773 }
774
775 /* download priority table before any calibration request */
776 if (priv->cfg->bt_params &&
777 priv->cfg->bt_params->advanced_bt_coexist) {
778 /* Configure Bluetooth device coexistence support */
779 if (priv->cfg->bt_params->bt_sco_disable)
780 priv->bt_enable_pspoll = false;
781 else
782 priv->bt_enable_pspoll = true;
783
784 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
785 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
786 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
787 iwlagn_send_advance_bt_config(priv);
788 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
789 priv->cur_rssi_ctx = NULL;
790
791 iwl_send_prio_tbl(priv);
792
793 /* FIXME: w/a to force change uCode BT state machine */
794 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
795 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
796 if (ret)
797 return ret;
798 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
799 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
800 if (ret)
801 return ret;
802 } else {
803 /*
804 * default is 2-wire BT coexexistence support
805 */
806 iwl_send_bt_config(priv);
807 }
808
809 /*
810 * Perform runtime calibrations, including DC calibration.
811 */
812 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
813
814 ieee80211_wake_queues(priv->hw);
815
816 /* Configure Tx antenna selection based on H/W config */
817 iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant);
818
819 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
820 struct iwl_rxon_cmd *active_rxon =
821 (struct iwl_rxon_cmd *)&ctx->active;
822 /* apply any changes in staging */
823 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
824 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
825 } else {
826 struct iwl_rxon_context *tmp;
827 /* Initialize our rx_config data */
828 for_each_context(priv, tmp)
829 iwl_connection_init_rx_config(priv, tmp);
830
831 iwlagn_set_rxon_chain(priv, ctx);
832 }
833
834 if (!priv->wowlan) {
835 /* WoWLAN ucode will not reply in the same way, skip it */
836 iwl_reset_run_time_calib(priv);
837 }
838
839 set_bit(STATUS_READY, &priv->status);
840
841 /* Configure the adapter for unassociated operation */
842 ret = iwlagn_commit_rxon(priv, ctx);
843 if (ret)
844 return ret;
845
846 /* At this point, the NIC is initialized and operational */
847 iwl_rf_kill_ct_config(priv);
848
849 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
850
851 return iwl_power_update_mode(priv, true);
852 }
853
854 /**
855 * iwl_clear_driver_stations - clear knowledge of all stations from driver
856 * @priv: iwl priv struct
857 *
858 * This is called during iwl_down() to make sure that in the case
859 * we're coming there from a hardware restart mac80211 will be
860 * able to reconfigure stations -- if we're getting there in the
861 * normal down flow then the stations will already be cleared.
862 */
863 static void iwl_clear_driver_stations(struct iwl_priv *priv)
864 {
865 struct iwl_rxon_context *ctx;
866
867 spin_lock_bh(&priv->sta_lock);
868 memset(priv->stations, 0, sizeof(priv->stations));
869 priv->num_stations = 0;
870
871 priv->ucode_key_table = 0;
872
873 for_each_context(priv, ctx) {
874 /*
875 * Remove all key information that is not stored as part
876 * of station information since mac80211 may not have had
877 * a chance to remove all the keys. When device is
878 * reconfigured by mac80211 after an error all keys will
879 * be reconfigured.
880 */
881 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
882 ctx->key_mapping_keys = 0;
883 }
884
885 spin_unlock_bh(&priv->sta_lock);
886 }
887
888 void iwl_down(struct iwl_priv *priv)
889 {
890 int exit_pending;
891
892 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
893
894 lockdep_assert_held(&priv->mutex);
895
896 iwl_scan_cancel_timeout(priv, 200);
897
898 /*
899 * If active, scanning won't cancel it, so say it expired.
900 * No race since we hold the mutex here and a new one
901 * can't come in at this time.
902 */
903 ieee80211_remain_on_channel_expired(priv->hw);
904
905 exit_pending =
906 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
907
908 iwl_clear_ucode_stations(priv, NULL);
909 iwl_dealloc_bcast_stations(priv);
910 iwl_clear_driver_stations(priv);
911
912 /* reset BT coex data */
913 priv->bt_status = 0;
914 priv->cur_rssi_ctx = NULL;
915 priv->bt_is_sco = 0;
916 if (priv->cfg->bt_params)
917 priv->bt_traffic_load =
918 priv->cfg->bt_params->bt_init_traffic_load;
919 else
920 priv->bt_traffic_load = 0;
921 priv->bt_full_concurrent = false;
922 priv->bt_ci_compliance = 0;
923
924 /* Wipe out the EXIT_PENDING status bit if we are not actually
925 * exiting the module */
926 if (!exit_pending)
927 clear_bit(STATUS_EXIT_PENDING, &priv->status);
928
929 if (priv->mac80211_registered)
930 ieee80211_stop_queues(priv->hw);
931
932 priv->ucode_loaded = false;
933 iwl_trans_stop_device(priv->trans);
934
935 /* Clear out all status bits but a few that are stable across reset */
936 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
937 STATUS_RF_KILL_HW |
938 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
939 STATUS_GEO_CONFIGURED |
940 test_bit(STATUS_FW_ERROR, &priv->status) <<
941 STATUS_FW_ERROR |
942 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
943 STATUS_EXIT_PENDING;
944
945 dev_kfree_skb(priv->beacon_skb);
946 priv->beacon_skb = NULL;
947 }
948
949 /*****************************************************************************
950 *
951 * Workqueue callbacks
952 *
953 *****************************************************************************/
954
955 static void iwl_bg_run_time_calib_work(struct work_struct *work)
956 {
957 struct iwl_priv *priv = container_of(work, struct iwl_priv,
958 run_time_calib_work);
959
960 mutex_lock(&priv->mutex);
961
962 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
963 test_bit(STATUS_SCANNING, &priv->status)) {
964 mutex_unlock(&priv->mutex);
965 return;
966 }
967
968 if (priv->start_calib) {
969 iwl_chain_noise_calibration(priv);
970 iwl_sensitivity_calibration(priv);
971 }
972
973 mutex_unlock(&priv->mutex);
974 }
975
976 void iwlagn_prepare_restart(struct iwl_priv *priv)
977 {
978 bool bt_full_concurrent;
979 u8 bt_ci_compliance;
980 u8 bt_load;
981 u8 bt_status;
982 bool bt_is_sco;
983 int i;
984
985 lockdep_assert_held(&priv->mutex);
986
987 priv->is_open = 0;
988
989 /*
990 * __iwl_down() will clear the BT status variables,
991 * which is correct, but when we restart we really
992 * want to keep them so restore them afterwards.
993 *
994 * The restart process will later pick them up and
995 * re-configure the hw when we reconfigure the BT
996 * command.
997 */
998 bt_full_concurrent = priv->bt_full_concurrent;
999 bt_ci_compliance = priv->bt_ci_compliance;
1000 bt_load = priv->bt_traffic_load;
1001 bt_status = priv->bt_status;
1002 bt_is_sco = priv->bt_is_sco;
1003
1004 iwl_down(priv);
1005
1006 priv->bt_full_concurrent = bt_full_concurrent;
1007 priv->bt_ci_compliance = bt_ci_compliance;
1008 priv->bt_traffic_load = bt_load;
1009 priv->bt_status = bt_status;
1010 priv->bt_is_sco = bt_is_sco;
1011
1012 /* reset aggregation queues */
1013 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1014 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1015 /* and stop counts */
1016 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1017 atomic_set(&priv->queue_stop_count[i], 0);
1018
1019 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1020 }
1021
1022 static void iwl_bg_restart(struct work_struct *data)
1023 {
1024 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1025
1026 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1027 return;
1028
1029 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1030 mutex_lock(&priv->mutex);
1031 iwlagn_prepare_restart(priv);
1032 mutex_unlock(&priv->mutex);
1033 iwl_cancel_deferred_work(priv);
1034 ieee80211_restart_hw(priv->hw);
1035 } else {
1036 WARN_ON(1);
1037 }
1038 }
1039
1040
1041
1042
1043 void iwlagn_disable_roc(struct iwl_priv *priv)
1044 {
1045 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1046
1047 lockdep_assert_held(&priv->mutex);
1048
1049 if (!priv->hw_roc_setup)
1050 return;
1051
1052 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1053 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1054
1055 priv->hw_roc_channel = NULL;
1056
1057 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1058
1059 iwlagn_commit_rxon(priv, ctx);
1060
1061 ctx->is_active = false;
1062 priv->hw_roc_setup = false;
1063 }
1064
1065 static void iwlagn_disable_roc_work(struct work_struct *work)
1066 {
1067 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1068 hw_roc_disable_work.work);
1069
1070 mutex_lock(&priv->mutex);
1071 iwlagn_disable_roc(priv);
1072 mutex_unlock(&priv->mutex);
1073 }
1074
1075 /*****************************************************************************
1076 *
1077 * driver setup and teardown
1078 *
1079 *****************************************************************************/
1080
1081 void iwl_setup_deferred_work(struct iwl_priv *priv)
1082 {
1083 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1084
1085 INIT_WORK(&priv->restart, iwl_bg_restart);
1086 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1087 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1088 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1089 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1090 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1091 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1092 iwlagn_disable_roc_work);
1093
1094 iwl_setup_scan_deferred_work(priv);
1095
1096 if (priv->cfg->bt_params)
1097 iwlagn_bt_setup_deferred_work(priv);
1098
1099 init_timer(&priv->statistics_periodic);
1100 priv->statistics_periodic.data = (unsigned long)priv;
1101 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1102
1103 init_timer(&priv->ucode_trace);
1104 priv->ucode_trace.data = (unsigned long)priv;
1105 priv->ucode_trace.function = iwl_bg_ucode_trace;
1106 }
1107
1108 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1109 {
1110 if (priv->cfg->bt_params)
1111 iwlagn_bt_cancel_deferred_work(priv);
1112
1113 cancel_work_sync(&priv->run_time_calib_work);
1114 cancel_work_sync(&priv->beacon_update);
1115
1116 iwl_cancel_scan_deferred_work(priv);
1117
1118 cancel_work_sync(&priv->bt_full_concurrency);
1119 cancel_work_sync(&priv->bt_runtime_config);
1120 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1121
1122 del_timer_sync(&priv->statistics_periodic);
1123 del_timer_sync(&priv->ucode_trace);
1124 }
1125
1126 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1127 {
1128 int i;
1129
1130 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1131 rates[i].bitrate = iwl_rates[i].ieee * 5;
1132 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1133 rates[i].hw_value_short = i;
1134 rates[i].flags = 0;
1135 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1136 /*
1137 * If CCK != 1M then set short preamble rate flag.
1138 */
1139 rates[i].flags |=
1140 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1141 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1142 }
1143 }
1144 }
1145
1146 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1147 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1148 static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1149 struct ieee80211_sta_ht_cap *ht_info,
1150 enum ieee80211_band band)
1151 {
1152 u16 max_bit_rate = 0;
1153 u8 rx_chains_num = priv->hw_params.rx_chains_num;
1154 u8 tx_chains_num = priv->hw_params.tx_chains_num;
1155
1156 ht_info->cap = 0;
1157 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1158
1159 ht_info->ht_supported = true;
1160
1161 if (priv->cfg->ht_params &&
1162 priv->cfg->ht_params->ht_greenfield_support)
1163 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1164 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1165 max_bit_rate = MAX_BIT_RATE_20_MHZ;
1166 if (priv->hw_params.ht40_channel & BIT(band)) {
1167 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1168 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1169 ht_info->mcs.rx_mask[4] = 0x01;
1170 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1171 }
1172
1173 if (iwlwifi_mod_params.amsdu_size_8K)
1174 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1175
1176 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1177 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1178
1179 ht_info->mcs.rx_mask[0] = 0xFF;
1180 if (rx_chains_num >= 2)
1181 ht_info->mcs.rx_mask[1] = 0xFF;
1182 if (rx_chains_num >= 3)
1183 ht_info->mcs.rx_mask[2] = 0xFF;
1184
1185 /* Highest supported Rx data rate */
1186 max_bit_rate *= rx_chains_num;
1187 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1188 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1189
1190 /* Tx MCS capabilities */
1191 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1192 if (tx_chains_num != rx_chains_num) {
1193 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1194 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1195 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1196 }
1197 }
1198
1199 /**
1200 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1201 */
1202 static int iwl_init_geos(struct iwl_priv *priv)
1203 {
1204 struct iwl_channel_info *ch;
1205 struct ieee80211_supported_band *sband;
1206 struct ieee80211_channel *channels;
1207 struct ieee80211_channel *geo_ch;
1208 struct ieee80211_rate *rates;
1209 int i = 0;
1210 s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1211
1212 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1213 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1214 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1215 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1216 return 0;
1217 }
1218
1219 channels = kcalloc(priv->channel_count,
1220 sizeof(struct ieee80211_channel), GFP_KERNEL);
1221 if (!channels)
1222 return -ENOMEM;
1223
1224 rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1225 GFP_KERNEL);
1226 if (!rates) {
1227 kfree(channels);
1228 return -ENOMEM;
1229 }
1230
1231 /* 5.2GHz channels start after the 2.4GHz channels */
1232 sband = &priv->bands[IEEE80211_BAND_5GHZ];
1233 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1234 /* just OFDM */
1235 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1236 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1237
1238 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1239 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1240 IEEE80211_BAND_5GHZ);
1241
1242 sband = &priv->bands[IEEE80211_BAND_2GHZ];
1243 sband->channels = channels;
1244 /* OFDM & CCK */
1245 sband->bitrates = rates;
1246 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1247
1248 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1249 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1250 IEEE80211_BAND_2GHZ);
1251
1252 priv->ieee_channels = channels;
1253 priv->ieee_rates = rates;
1254
1255 for (i = 0; i < priv->channel_count; i++) {
1256 ch = &priv->channel_info[i];
1257
1258 /* FIXME: might be removed if scan is OK */
1259 if (!is_channel_valid(ch))
1260 continue;
1261
1262 sband = &priv->bands[ch->band];
1263
1264 geo_ch = &sband->channels[sband->n_channels++];
1265
1266 geo_ch->center_freq =
1267 ieee80211_channel_to_frequency(ch->channel, ch->band);
1268 geo_ch->max_power = ch->max_power_avg;
1269 geo_ch->max_antenna_gain = 0xff;
1270 geo_ch->hw_value = ch->channel;
1271
1272 if (is_channel_valid(ch)) {
1273 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1274 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1275
1276 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1277 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1278
1279 if (ch->flags & EEPROM_CHANNEL_RADAR)
1280 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1281
1282 geo_ch->flags |= ch->ht40_extension_channel;
1283
1284 if (ch->max_power_avg > max_tx_power)
1285 max_tx_power = ch->max_power_avg;
1286 } else {
1287 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1288 }
1289
1290 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1291 ch->channel, geo_ch->center_freq,
1292 is_channel_a_band(ch) ? "5.2" : "2.4",
1293 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1294 "restricted" : "valid",
1295 geo_ch->flags);
1296 }
1297
1298 priv->tx_power_device_lmt = max_tx_power;
1299 priv->tx_power_user_lmt = max_tx_power;
1300 priv->tx_power_next = max_tx_power;
1301
1302 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
1303 priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) {
1304 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1305 "Please send your %s to maintainer.\n",
1306 priv->trans->hw_id_str);
1307 priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
1308 }
1309
1310 if (iwlwifi_mod_params.disable_5ghz)
1311 priv->bands[IEEE80211_BAND_5GHZ].n_channels = 0;
1312
1313 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1314 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1315 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1316
1317 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1318
1319 return 0;
1320 }
1321
1322 /*
1323 * iwl_free_geos - undo allocations in iwl_init_geos
1324 */
1325 static void iwl_free_geos(struct iwl_priv *priv)
1326 {
1327 kfree(priv->ieee_channels);
1328 kfree(priv->ieee_rates);
1329 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1330 }
1331
1332 int iwl_init_drv(struct iwl_priv *priv)
1333 {
1334 int ret;
1335
1336 spin_lock_init(&priv->sta_lock);
1337
1338 mutex_init(&priv->mutex);
1339
1340 INIT_LIST_HEAD(&priv->calib_results);
1341
1342 priv->ieee_channels = NULL;
1343 priv->ieee_rates = NULL;
1344 priv->band = IEEE80211_BAND_2GHZ;
1345
1346 priv->plcp_delta_threshold =
1347 priv->cfg->base_params->plcp_delta_threshold;
1348
1349 priv->iw_mode = NL80211_IFTYPE_STATION;
1350 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1351 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1352 priv->agg_tids_count = 0;
1353
1354 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1355
1356 priv->rx_statistics_jiffies = jiffies;
1357
1358 /* Choose which receivers/antennas to use */
1359 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1360
1361 iwl_init_scan_params(priv);
1362
1363 /* init bt coex */
1364 if (priv->cfg->bt_params &&
1365 priv->cfg->bt_params->advanced_bt_coexist) {
1366 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1367 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1368 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1369 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1370 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1371 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1372 }
1373
1374 ret = iwl_init_channel_map(priv);
1375 if (ret) {
1376 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1377 goto err;
1378 }
1379
1380 ret = iwl_init_geos(priv);
1381 if (ret) {
1382 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1383 goto err_free_channel_map;
1384 }
1385 iwl_init_hw_rates(priv->ieee_rates);
1386
1387 return 0;
1388
1389 err_free_channel_map:
1390 iwl_free_channel_map(priv);
1391 err:
1392 return ret;
1393 }
1394
1395 void iwl_uninit_drv(struct iwl_priv *priv)
1396 {
1397 iwl_free_geos(priv);
1398 iwl_free_channel_map(priv);
1399 kfree(priv->scan_cmd);
1400 kfree(priv->beacon_cmd);
1401 kfree(rcu_dereference_raw(priv->noa_data));
1402 iwl_calib_free_results(priv);
1403 #ifdef CONFIG_IWLWIFI_DEBUGFS
1404 kfree(priv->wowlan_sram);
1405 #endif
1406 }
1407
1408 void iwl_set_hw_params(struct iwl_priv *priv)
1409 {
1410 if (priv->cfg->ht_params)
1411 priv->hw_params.use_rts_for_aggregation =
1412 priv->cfg->ht_params->use_rts_for_aggregation;
1413
1414 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1415 priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1416
1417 /* Device-specific setup */
1418 priv->lib->set_hw_params(priv);
1419 }
1420
1421
1422
1423 void iwl_debug_config(struct iwl_priv *priv)
1424 {
1425 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG "
1426 #ifdef CONFIG_IWLWIFI_DEBUG
1427 "enabled\n");
1428 #else
1429 "disabled\n");
1430 #endif
1431 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS "
1432 #ifdef CONFIG_IWLWIFI_DEBUGFS
1433 "enabled\n");
1434 #else
1435 "disabled\n");
1436 #endif
1437 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING "
1438 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1439 "enabled\n");
1440 #else
1441 "disabled\n");
1442 #endif
1443 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1444 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1445 "enabled\n");
1446 #else
1447 "disabled\n");
1448 #endif
1449 IWL_INFO(priv, "CONFIG_IWLWIFI_P2P "
1450 #ifdef CONFIG_IWLWIFI_P2P
1451 "enabled\n");
1452 #else
1453 "disabled\n");
1454 #endif
1455 }
1456
1457 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1458 const struct iwl_cfg *cfg,
1459 const struct iwl_fw *fw)
1460 {
1461 struct iwl_priv *priv;
1462 struct ieee80211_hw *hw;
1463 struct iwl_op_mode *op_mode;
1464 u16 num_mac;
1465 u32 ucode_flags;
1466 struct iwl_trans_config trans_cfg;
1467 static const u8 no_reclaim_cmds[] = {
1468 REPLY_RX_PHY_CMD,
1469 REPLY_RX,
1470 REPLY_RX_MPDU_CMD,
1471 REPLY_COMPRESSED_BA,
1472 STATISTICS_NOTIFICATION,
1473 REPLY_TX,
1474 };
1475 int i;
1476
1477 /************************
1478 * 1. Allocating HW data
1479 ************************/
1480 hw = iwl_alloc_all();
1481 if (!hw) {
1482 pr_err("%s: Cannot allocate network device\n", cfg->name);
1483 goto out;
1484 }
1485
1486 op_mode = hw->priv;
1487 op_mode->ops = &iwl_dvm_ops;
1488 priv = IWL_OP_MODE_GET_DVM(op_mode);
1489 priv->trans = trans;
1490 priv->dev = trans->dev;
1491 priv->cfg = cfg;
1492 priv->fw = fw;
1493
1494 switch (priv->cfg->device_family) {
1495 case IWL_DEVICE_FAMILY_1000:
1496 case IWL_DEVICE_FAMILY_100:
1497 priv->lib = &iwl1000_lib;
1498 break;
1499 case IWL_DEVICE_FAMILY_2000:
1500 case IWL_DEVICE_FAMILY_105:
1501 priv->lib = &iwl2000_lib;
1502 break;
1503 case IWL_DEVICE_FAMILY_2030:
1504 case IWL_DEVICE_FAMILY_135:
1505 priv->lib = &iwl2030_lib;
1506 break;
1507 case IWL_DEVICE_FAMILY_5000:
1508 priv->lib = &iwl5000_lib;
1509 break;
1510 case IWL_DEVICE_FAMILY_5150:
1511 priv->lib = &iwl5150_lib;
1512 break;
1513 case IWL_DEVICE_FAMILY_6000:
1514 case IWL_DEVICE_FAMILY_6005:
1515 case IWL_DEVICE_FAMILY_6000i:
1516 case IWL_DEVICE_FAMILY_6050:
1517 case IWL_DEVICE_FAMILY_6150:
1518 priv->lib = &iwl6000_lib;
1519 break;
1520 case IWL_DEVICE_FAMILY_6030:
1521 priv->lib = &iwl6030_lib;
1522 break;
1523 default:
1524 break;
1525 }
1526
1527 if (WARN_ON(!priv->lib))
1528 goto out_free_hw;
1529
1530 /*
1531 * Populate the state variables that the transport layer needs
1532 * to know about.
1533 */
1534 trans_cfg.op_mode = op_mode;
1535 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1536 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1537 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1538 if (!iwlwifi_mod_params.wd_disable)
1539 trans_cfg.queue_watchdog_timeout =
1540 priv->cfg->base_params->wd_timeout;
1541 else
1542 trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED;
1543 trans_cfg.command_names = iwl_dvm_cmd_strings;
1544
1545 ucode_flags = fw->ucode_capa.flags;
1546
1547 #ifndef CONFIG_IWLWIFI_P2P
1548 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1549 #endif
1550
1551 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1552 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1553 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1554 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1555 trans_cfg.n_queue_to_fifo =
1556 ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1557 } else {
1558 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1559 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1560 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1561 trans_cfg.n_queue_to_fifo =
1562 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1563 }
1564
1565 /* Configure transport layer */
1566 iwl_trans_configure(priv->trans, &trans_cfg);
1567
1568 /* At this point both hw and priv are allocated. */
1569
1570 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1571
1572 /* show what debugging capabilities we have */
1573 iwl_debug_config(priv);
1574
1575 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1576
1577 /* is antenna coupling more than 35dB ? */
1578 priv->bt_ant_couple_ok =
1579 (iwlwifi_mod_params.ant_coupling >
1580 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1581 true : false;
1582
1583 /* enable/disable bt channel inhibition */
1584 priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1585 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1586 (priv->bt_ch_announce) ? "On" : "Off");
1587
1588 /* these spin locks will be used in apm_ops.init and EEPROM access
1589 * we should init now
1590 */
1591 spin_lock_init(&priv->trans->reg_lock);
1592 spin_lock_init(&priv->statistics.lock);
1593
1594 /***********************
1595 * 2. Read REV register
1596 ***********************/
1597 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1598 priv->cfg->name, priv->trans->hw_rev);
1599
1600 if (iwl_trans_start_hw(priv->trans))
1601 goto out_free_hw;
1602
1603 /* Read the EEPROM */
1604 if (iwl_eeprom_init(priv, priv->trans->hw_rev)) {
1605 IWL_ERR(priv, "Unable to init EEPROM\n");
1606 goto out_free_hw;
1607 }
1608 /* Reset chip to save power until we load uCode during "up". */
1609 iwl_trans_stop_hw(priv->trans, false);
1610
1611 if (iwl_eeprom_check_version(priv))
1612 goto out_free_eeprom;
1613
1614 if (iwl_eeprom_init_hw_params(priv))
1615 goto out_free_eeprom;
1616
1617 /* extract MAC Address */
1618 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
1619 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1620 priv->hw->wiphy->addresses = priv->addresses;
1621 priv->hw->wiphy->n_addresses = 1;
1622 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
1623 if (num_mac > 1) {
1624 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1625 ETH_ALEN);
1626 priv->addresses[1].addr[5]++;
1627 priv->hw->wiphy->n_addresses++;
1628 }
1629
1630 /************************
1631 * 4. Setup HW constants
1632 ************************/
1633 iwl_set_hw_params(priv);
1634
1635 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1636 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1637 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1638 /*
1639 * if not PAN, then don't support P2P -- might be a uCode
1640 * packaging bug or due to the eeprom check above
1641 */
1642 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1643 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1644 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1645 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1646 trans_cfg.n_queue_to_fifo =
1647 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1648
1649 /* Configure transport layer again*/
1650 iwl_trans_configure(priv->trans, &trans_cfg);
1651 }
1652
1653 /*******************
1654 * 5. Setup priv
1655 *******************/
1656 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1657 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1658 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1659 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1660 i != IWL_IPAN_CMD_QUEUE_NUM)
1661 priv->queue_to_mac80211[i] = i;
1662 atomic_set(&priv->queue_stop_count[i], 0);
1663 }
1664
1665 WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1666 IWLAGN_CMD_FIFO_NUM);
1667
1668 if (iwl_init_drv(priv))
1669 goto out_free_eeprom;
1670
1671 /* At this point both hw and priv are initialized. */
1672
1673 /********************
1674 * 6. Setup services
1675 ********************/
1676 iwl_setup_deferred_work(priv);
1677 iwl_setup_rx_handlers(priv);
1678 iwl_testmode_init(priv);
1679
1680 iwl_power_initialize(priv);
1681 iwl_tt_initialize(priv);
1682
1683 snprintf(priv->hw->wiphy->fw_version,
1684 sizeof(priv->hw->wiphy->fw_version),
1685 "%s", fw->fw_version);
1686
1687 priv->new_scan_threshold_behaviour =
1688 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1689
1690 priv->phy_calib_chain_noise_reset_cmd =
1691 fw->ucode_capa.standard_phy_calibration_size;
1692 priv->phy_calib_chain_noise_gain_cmd =
1693 fw->ucode_capa.standard_phy_calibration_size + 1;
1694
1695 /* initialize all valid contexts */
1696 iwl_init_context(priv, ucode_flags);
1697
1698 /**************************************************
1699 * This is still part of probe() in a sense...
1700 *
1701 * 7. Setup and register with mac80211 and debugfs
1702 **************************************************/
1703 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1704 goto out_destroy_workqueue;
1705
1706 if (iwl_dbgfs_register(priv, DRV_NAME))
1707 IWL_ERR(priv,
1708 "failed to create debugfs files. Ignoring error\n");
1709
1710 return op_mode;
1711
1712 out_destroy_workqueue:
1713 destroy_workqueue(priv->workqueue);
1714 priv->workqueue = NULL;
1715 iwl_uninit_drv(priv);
1716 out_free_eeprom:
1717 iwl_eeprom_free(priv);
1718 out_free_hw:
1719 ieee80211_free_hw(priv->hw);
1720 out:
1721 op_mode = NULL;
1722 return op_mode;
1723 }
1724
1725 void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1726 {
1727 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1728
1729 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1730
1731 iwl_dbgfs_unregister(priv);
1732
1733 iwl_testmode_cleanup(priv);
1734 iwlagn_mac_unregister(priv);
1735
1736 iwl_tt_exit(priv);
1737
1738 /*This will stop the queues, move the device to low power state */
1739 priv->ucode_loaded = false;
1740 iwl_trans_stop_device(priv->trans);
1741
1742 iwl_eeprom_free(priv);
1743
1744 /*netif_stop_queue(dev); */
1745 flush_workqueue(priv->workqueue);
1746
1747 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1748 * priv->workqueue... so we can't take down the workqueue
1749 * until now... */
1750 destroy_workqueue(priv->workqueue);
1751 priv->workqueue = NULL;
1752
1753 iwl_uninit_drv(priv);
1754
1755 dev_kfree_skb(priv->beacon_skb);
1756
1757 iwl_trans_stop_hw(priv->trans, true);
1758 ieee80211_free_hw(priv->hw);
1759 }
1760
1761 static const char * const desc_lookup_text[] = {
1762 "OK",
1763 "FAIL",
1764 "BAD_PARAM",
1765 "BAD_CHECKSUM",
1766 "NMI_INTERRUPT_WDG",
1767 "SYSASSERT",
1768 "FATAL_ERROR",
1769 "BAD_COMMAND",
1770 "HW_ERROR_TUNE_LOCK",
1771 "HW_ERROR_TEMPERATURE",
1772 "ILLEGAL_CHAN_FREQ",
1773 "VCC_NOT_STABLE",
1774 "FH_ERROR",
1775 "NMI_INTERRUPT_HOST",
1776 "NMI_INTERRUPT_ACTION_PT",
1777 "NMI_INTERRUPT_UNKNOWN",
1778 "UCODE_VERSION_MISMATCH",
1779 "HW_ERROR_ABS_LOCK",
1780 "HW_ERROR_CAL_LOCK_FAIL",
1781 "NMI_INTERRUPT_INST_ACTION_PT",
1782 "NMI_INTERRUPT_DATA_ACTION_PT",
1783 "NMI_TRM_HW_ER",
1784 "NMI_INTERRUPT_TRM",
1785 "NMI_INTERRUPT_BREAK_POINT",
1786 "DEBUG_0",
1787 "DEBUG_1",
1788 "DEBUG_2",
1789 "DEBUG_3",
1790 };
1791
1792 static struct { char *name; u8 num; } advanced_lookup[] = {
1793 { "NMI_INTERRUPT_WDG", 0x34 },
1794 { "SYSASSERT", 0x35 },
1795 { "UCODE_VERSION_MISMATCH", 0x37 },
1796 { "BAD_COMMAND", 0x38 },
1797 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1798 { "FATAL_ERROR", 0x3D },
1799 { "NMI_TRM_HW_ERR", 0x46 },
1800 { "NMI_INTERRUPT_TRM", 0x4C },
1801 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1802 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1803 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1804 { "NMI_INTERRUPT_HOST", 0x66 },
1805 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1806 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1807 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1808 { "ADVANCED_SYSASSERT", 0 },
1809 };
1810
1811 static const char *desc_lookup(u32 num)
1812 {
1813 int i;
1814 int max = ARRAY_SIZE(desc_lookup_text);
1815
1816 if (num < max)
1817 return desc_lookup_text[num];
1818
1819 max = ARRAY_SIZE(advanced_lookup) - 1;
1820 for (i = 0; i < max; i++) {
1821 if (advanced_lookup[i].num == num)
1822 break;
1823 }
1824 return advanced_lookup[i].name;
1825 }
1826
1827 #define ERROR_START_OFFSET (1 * sizeof(u32))
1828 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1829
1830 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1831 {
1832 struct iwl_trans *trans = priv->trans;
1833 u32 base;
1834 struct iwl_error_event_table table;
1835
1836 base = priv->device_pointers.error_event_table;
1837 if (priv->cur_ucode == IWL_UCODE_INIT) {
1838 if (!base)
1839 base = priv->fw->init_errlog_ptr;
1840 } else {
1841 if (!base)
1842 base = priv->fw->inst_errlog_ptr;
1843 }
1844
1845 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1846 IWL_ERR(priv,
1847 "Not valid error log pointer 0x%08X for %s uCode\n",
1848 base,
1849 (priv->cur_ucode == IWL_UCODE_INIT)
1850 ? "Init" : "RT");
1851 return;
1852 }
1853
1854 /*TODO: Update dbgfs with ISR error stats obtained below */
1855 iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1856
1857 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1858 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1859 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1860 priv->status, table.valid);
1861 }
1862
1863 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1864 table.data1, table.data2, table.line,
1865 table.blink1, table.blink2, table.ilink1,
1866 table.ilink2, table.bcon_time, table.gp1,
1867 table.gp2, table.gp3, table.ucode_ver,
1868 table.hw_ver, table.brd_ver);
1869 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1870 desc_lookup(table.error_id));
1871 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1872 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1873 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1874 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1875 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1876 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1877 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1878 IWL_ERR(priv, "0x%08X | line\n", table.line);
1879 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1880 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1881 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1882 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1883 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1884 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1885 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1886 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1887 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1888 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1889 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1890 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1891 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1892 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1893 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1894 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1895 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1896 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1897 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1898 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1899 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1900 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1901 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1902 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1903 }
1904
1905 #define EVENT_START_OFFSET (4 * sizeof(u32))
1906
1907 /**
1908 * iwl_print_event_log - Dump error event log to syslog
1909 *
1910 */
1911 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1912 u32 num_events, u32 mode,
1913 int pos, char **buf, size_t bufsz)
1914 {
1915 u32 i;
1916 u32 base; /* SRAM byte address of event log header */
1917 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1918 u32 ptr; /* SRAM byte address of log data */
1919 u32 ev, time, data; /* event log data */
1920 unsigned long reg_flags;
1921
1922 struct iwl_trans *trans = priv->trans;
1923
1924 if (num_events == 0)
1925 return pos;
1926
1927 base = priv->device_pointers.log_event_table;
1928 if (priv->cur_ucode == IWL_UCODE_INIT) {
1929 if (!base)
1930 base = priv->fw->init_evtlog_ptr;
1931 } else {
1932 if (!base)
1933 base = priv->fw->inst_evtlog_ptr;
1934 }
1935
1936 if (mode == 0)
1937 event_size = 2 * sizeof(u32);
1938 else
1939 event_size = 3 * sizeof(u32);
1940
1941 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1942
1943 /* Make sure device is powered up for SRAM reads */
1944 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1945 if (unlikely(!iwl_grab_nic_access(trans)))
1946 goto out_unlock;
1947
1948 /* Set starting address; reads will auto-increment */
1949 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1950
1951 /* "time" is actually "data" for mode 0 (no timestamp).
1952 * place event id # at far right for easier visual parsing. */
1953 for (i = 0; i < num_events; i++) {
1954 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1955 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1956 if (mode == 0) {
1957 /* data, ev */
1958 if (bufsz) {
1959 pos += scnprintf(*buf + pos, bufsz - pos,
1960 "EVT_LOG:0x%08x:%04u\n",
1961 time, ev);
1962 } else {
1963 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1964 time, ev);
1965 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1966 time, ev);
1967 }
1968 } else {
1969 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1970 if (bufsz) {
1971 pos += scnprintf(*buf + pos, bufsz - pos,
1972 "EVT_LOGT:%010u:0x%08x:%04u\n",
1973 time, data, ev);
1974 } else {
1975 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1976 time, data, ev);
1977 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1978 data, ev);
1979 }
1980 }
1981 }
1982
1983 /* Allow device to power down */
1984 iwl_release_nic_access(trans);
1985 out_unlock:
1986 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1987 return pos;
1988 }
1989
1990 /**
1991 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1992 */
1993 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1994 u32 num_wraps, u32 next_entry,
1995 u32 size, u32 mode,
1996 int pos, char **buf, size_t bufsz)
1997 {
1998 /*
1999 * display the newest DEFAULT_LOG_ENTRIES entries
2000 * i.e the entries just before the next ont that uCode would fill.
2001 */
2002 if (num_wraps) {
2003 if (next_entry < size) {
2004 pos = iwl_print_event_log(priv,
2005 capacity - (size - next_entry),
2006 size - next_entry, mode,
2007 pos, buf, bufsz);
2008 pos = iwl_print_event_log(priv, 0,
2009 next_entry, mode,
2010 pos, buf, bufsz);
2011 } else
2012 pos = iwl_print_event_log(priv, next_entry - size,
2013 size, mode, pos, buf, bufsz);
2014 } else {
2015 if (next_entry < size) {
2016 pos = iwl_print_event_log(priv, 0, next_entry,
2017 mode, pos, buf, bufsz);
2018 } else {
2019 pos = iwl_print_event_log(priv, next_entry - size,
2020 size, mode, pos, buf, bufsz);
2021 }
2022 }
2023 return pos;
2024 }
2025
2026 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2027
2028 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2029 char **buf, bool display)
2030 {
2031 u32 base; /* SRAM byte address of event log header */
2032 u32 capacity; /* event log capacity in # entries */
2033 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2034 u32 num_wraps; /* # times uCode wrapped to top of log */
2035 u32 next_entry; /* index of next entry to be written by uCode */
2036 u32 size; /* # entries that we'll print */
2037 u32 logsize;
2038 int pos = 0;
2039 size_t bufsz = 0;
2040 struct iwl_trans *trans = priv->trans;
2041
2042 base = priv->device_pointers.log_event_table;
2043 if (priv->cur_ucode == IWL_UCODE_INIT) {
2044 logsize = priv->fw->init_evtlog_size;
2045 if (!base)
2046 base = priv->fw->init_evtlog_ptr;
2047 } else {
2048 logsize = priv->fw->inst_evtlog_size;
2049 if (!base)
2050 base = priv->fw->inst_evtlog_ptr;
2051 }
2052
2053 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2054 IWL_ERR(priv,
2055 "Invalid event log pointer 0x%08X for %s uCode\n",
2056 base,
2057 (priv->cur_ucode == IWL_UCODE_INIT)
2058 ? "Init" : "RT");
2059 return -EINVAL;
2060 }
2061
2062 /* event log header */
2063 capacity = iwl_read_targ_mem(trans, base);
2064 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2065 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2066 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2067
2068 if (capacity > logsize) {
2069 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2070 "entries\n", capacity, logsize);
2071 capacity = logsize;
2072 }
2073
2074 if (next_entry > logsize) {
2075 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2076 next_entry, logsize);
2077 next_entry = logsize;
2078 }
2079
2080 size = num_wraps ? capacity : next_entry;
2081
2082 /* bail out if nothing in log */
2083 if (size == 0) {
2084 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2085 return pos;
2086 }
2087
2088 #ifdef CONFIG_IWLWIFI_DEBUG
2089 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2090 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2091 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2092 #else
2093 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2094 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2095 #endif
2096 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2097 size);
2098
2099 #ifdef CONFIG_IWLWIFI_DEBUG
2100 if (display) {
2101 if (full_log)
2102 bufsz = capacity * 48;
2103 else
2104 bufsz = size * 48;
2105 *buf = kmalloc(bufsz, GFP_KERNEL);
2106 if (!*buf)
2107 return -ENOMEM;
2108 }
2109 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2110 /*
2111 * if uCode has wrapped back to top of log,
2112 * start at the oldest entry,
2113 * i.e the next one that uCode would fill.
2114 */
2115 if (num_wraps)
2116 pos = iwl_print_event_log(priv, next_entry,
2117 capacity - next_entry, mode,
2118 pos, buf, bufsz);
2119 /* (then/else) start at top of log */
2120 pos = iwl_print_event_log(priv, 0,
2121 next_entry, mode, pos, buf, bufsz);
2122 } else
2123 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2124 next_entry, size, mode,
2125 pos, buf, bufsz);
2126 #else
2127 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2128 next_entry, size, mode,
2129 pos, buf, bufsz);
2130 #endif
2131 return pos;
2132 }
2133
2134 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
2135 {
2136 unsigned int reload_msec;
2137 unsigned long reload_jiffies;
2138
2139 #ifdef CONFIG_IWLWIFI_DEBUG
2140 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
2141 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
2142 #endif
2143
2144 /* uCode is no longer loaded. */
2145 priv->ucode_loaded = false;
2146
2147 /* Set the FW error flag -- cleared on iwl_down */
2148 set_bit(STATUS_FW_ERROR, &priv->status);
2149
2150 iwl_abort_notification_waits(&priv->notif_wait);
2151
2152 /* Keep the restart process from trying to send host
2153 * commands by clearing the ready bit */
2154 clear_bit(STATUS_READY, &priv->status);
2155
2156 wake_up(&priv->trans->wait_command_queue);
2157
2158 if (!ondemand) {
2159 /*
2160 * If firmware keep reloading, then it indicate something
2161 * serious wrong and firmware having problem to recover
2162 * from it. Instead of keep trying which will fill the syslog
2163 * and hang the system, let's just stop it
2164 */
2165 reload_jiffies = jiffies;
2166 reload_msec = jiffies_to_msecs((long) reload_jiffies -
2167 (long) priv->reload_jiffies);
2168 priv->reload_jiffies = reload_jiffies;
2169 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
2170 priv->reload_count++;
2171 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
2172 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
2173 return;
2174 }
2175 } else
2176 priv->reload_count = 0;
2177 }
2178
2179 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2180 if (iwlwifi_mod_params.restart_fw) {
2181 IWL_DEBUG_FW_ERRORS(priv,
2182 "Restarting adapter due to uCode error.\n");
2183 queue_work(priv->workqueue, &priv->restart);
2184 } else
2185 IWL_DEBUG_FW_ERRORS(priv,
2186 "Detected FW error, but not restarting\n");
2187 }
2188 }
2189
2190 void iwl_nic_error(struct iwl_op_mode *op_mode)
2191 {
2192 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2193
2194 IWL_ERR(priv, "Loaded firmware version: %s\n",
2195 priv->fw->fw_version);
2196
2197 iwl_dump_nic_error_log(priv);
2198 iwl_dump_nic_event_log(priv, false, NULL, false);
2199
2200 iwlagn_fw_error(priv, false);
2201 }
2202
2203 void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2204 {
2205 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2206
2207 if (!iwl_check_for_ct_kill(priv)) {
2208 IWL_ERR(priv, "Restarting adapter queue is full\n");
2209 iwlagn_fw_error(priv, false);
2210 }
2211 }
2212
2213 void iwl_nic_config(struct iwl_op_mode *op_mode)
2214 {
2215 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2216
2217 priv->lib->nic_config(priv);
2218 }
2219
2220 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2221 {
2222 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2223
2224 clear_bit(STATUS_READY, &priv->status);
2225 IWL_ERR(priv, "RF is used by WiMAX\n");
2226 }
2227
2228 void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2229 {
2230 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2231 int mq = priv->queue_to_mac80211[queue];
2232
2233 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2234 return;
2235
2236 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2237 IWL_DEBUG_TX_QUEUES(priv,
2238 "queue %d (mac80211 %d) already stopped\n",
2239 queue, mq);
2240 return;
2241 }
2242
2243 set_bit(mq, &priv->transport_queue_stop);
2244 ieee80211_stop_queue(priv->hw, mq);
2245 }
2246
2247 void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2248 {
2249 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2250 int mq = priv->queue_to_mac80211[queue];
2251
2252 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2253 return;
2254
2255 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2256 IWL_DEBUG_TX_QUEUES(priv,
2257 "queue %d (mac80211 %d) already awake\n",
2258 queue, mq);
2259 return;
2260 }
2261
2262 clear_bit(mq, &priv->transport_queue_stop);
2263
2264 if (!priv->passive_no_rx)
2265 ieee80211_wake_queue(priv->hw, mq);
2266 }
2267
2268 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2269 {
2270 int mq;
2271
2272 if (!priv->passive_no_rx)
2273 return;
2274
2275 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2276 if (!test_bit(mq, &priv->transport_queue_stop)) {
2277 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2278 ieee80211_wake_queue(priv->hw, mq);
2279 } else {
2280 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2281 }
2282 }
2283
2284 priv->passive_no_rx = false;
2285 }
2286
2287 void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2288 {
2289 struct ieee80211_tx_info *info;
2290
2291 info = IEEE80211_SKB_CB(skb);
2292 kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
2293 dev_kfree_skb_any(skb);
2294 }
2295
2296 void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2297 {
2298 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2299
2300 if (state)
2301 set_bit(STATUS_RF_KILL_HW, &priv->status);
2302 else
2303 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2304
2305 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2306 }
2307
2308 const struct iwl_op_mode_ops iwl_dvm_ops = {
2309 .start = iwl_op_mode_dvm_start,
2310 .stop = iwl_op_mode_dvm_stop,
2311 .rx = iwl_rx_dispatch,
2312 .queue_full = iwl_stop_sw_queue,
2313 .queue_not_full = iwl_wake_sw_queue,
2314 .hw_rf_kill = iwl_set_hw_rfkill_state,
2315 .free_skb = iwl_free_skb,
2316 .nic_error = iwl_nic_error,
2317 .cmd_queue_full = iwl_cmd_queue_full,
2318 .nic_config = iwl_nic_config,
2319 .wimax_active = iwl_wimax_active,
2320 };
2321
2322 /*****************************************************************************
2323 *
2324 * driver and module entry point
2325 *
2326 *****************************************************************************/
2327
2328 struct kmem_cache *iwl_tx_cmd_pool;
2329
2330 static int __init iwl_init(void)
2331 {
2332
2333 int ret;
2334 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2335 pr_info(DRV_COPYRIGHT "\n");
2336
2337 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2338 sizeof(struct iwl_device_cmd),
2339 sizeof(void *), 0, NULL);
2340 if (!iwl_tx_cmd_pool)
2341 return -ENOMEM;
2342
2343 ret = iwlagn_rate_control_register();
2344 if (ret) {
2345 pr_err("Unable to register rate control algorithm: %d\n", ret);
2346 goto error_rc_register;
2347 }
2348
2349 ret = iwl_pci_register_driver();
2350 if (ret)
2351 goto error_pci_register;
2352 return ret;
2353
2354 error_pci_register:
2355 iwlagn_rate_control_unregister();
2356 error_rc_register:
2357 kmem_cache_destroy(iwl_tx_cmd_pool);
2358 return ret;
2359 }
2360
2361 static void __exit iwl_exit(void)
2362 {
2363 iwl_pci_unregister_driver();
2364 iwlagn_rate_control_unregister();
2365 kmem_cache_destroy(iwl_tx_cmd_pool);
2366 }
2367
2368 module_exit(iwl_exit);
2369 module_init(iwl_init);
Linux kernel - Deliverables
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