projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
iwlwifi: give PCIe its own lock
[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 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/if_arp.h>
39
40 #include <net/mac80211.h>
41
42 #include <asm/div64.h>
43
44 #include "iwl-ucode.h"
45 #include "iwl-eeprom.h"
46 #include "iwl-wifi.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-agn-calib.h"
51 #include "iwl-agn.h"
52 #include "iwl-shared.h"
53 #include "iwl-bus.h"
54 #include "iwl-trans.h"
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 */
65 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #define DRV_VERSION IWLWIFI_VERSION VD
74
75
76 MODULE_DESCRIPTION(DRV_DESCRIPTION);
77 MODULE_VERSION(DRV_VERSION);
78 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
79 MODULE_LICENSE("GPL");
80 MODULE_ALIAS("iwlagn");
81
82 void iwl_update_chain_flags(struct iwl_priv *priv)
83 {
84 struct iwl_rxon_context *ctx;
85
86 for_each_context(priv, ctx) {
87 iwlagn_set_rxon_chain(priv, ctx);
88 if (ctx->active.rx_chain != ctx->staging.rx_chain)
89 iwlagn_commit_rxon(priv, ctx);
90 }
91 }
92
93 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
94 static void iwl_set_beacon_tim(struct iwl_priv *priv,
95 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
96 u8 *beacon, u32 frame_size)
97 {
98 u16 tim_idx;
99 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
100
101 /*
102 * The index is relative to frame start but we start looking at the
103 * variable-length part of the beacon.
104 */
105 tim_idx = mgmt->u.beacon.variable - beacon;
106
107 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
108 while ((tim_idx < (frame_size - 2)) &&
109 (beacon[tim_idx] != WLAN_EID_TIM))
110 tim_idx += beacon[tim_idx+1] + 2;
111
112 /* If TIM field was found, set variables */
113 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
114 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
115 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
116 } else
117 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
118 }
119
120 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
121 {
122 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
123 struct iwl_host_cmd cmd = {
124 .id = REPLY_TX_BEACON,
125 .flags = CMD_SYNC,
126 };
127 struct ieee80211_tx_info *info;
128 u32 frame_size;
129 u32 rate_flags;
130 u32 rate;
131
132 /*
133 * We have to set up the TX command, the TX Beacon command, and the
134 * beacon contents.
135 */
136
137 lockdep_assert_held(&priv->shrd->mutex);
138
139 if (!priv->beacon_ctx) {
140 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
141 return 0;
142 }
143
144 if (WARN_ON(!priv->beacon_skb))
145 return -EINVAL;
146
147 /* Allocate beacon command */
148 if (!priv->beacon_cmd)
149 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
150 tx_beacon_cmd = priv->beacon_cmd;
151 if (!tx_beacon_cmd)
152 return -ENOMEM;
153
154 frame_size = priv->beacon_skb->len;
155
156 /* Set up TX command fields */
157 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
158 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
159 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
160 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
161 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
162
163 /* Set up TX beacon command fields */
164 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
165 frame_size);
166
167 /* Set up packet rate and flags */
168 info = IEEE80211_SKB_CB(priv->beacon_skb);
169
170 /*
171 * Let's set up the rate at least somewhat correctly;
172 * it will currently not actually be used by the uCode,
173 * it uses the broadcast station's rate instead.
174 */
175 if (info->control.rates[0].idx < 0 ||
176 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
177 rate = 0;
178 else
179 rate = info->control.rates[0].idx;
180
181 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
182 hw_params(priv).valid_tx_ant);
183 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
184
185 /* In mac80211, rates for 5 GHz start at 0 */
186 if (info->band == IEEE80211_BAND_5GHZ)
187 rate += IWL_FIRST_OFDM_RATE;
188 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
189 rate_flags |= RATE_MCS_CCK_MSK;
190
191 tx_beacon_cmd->tx.rate_n_flags =
192 iwl_hw_set_rate_n_flags(rate, rate_flags);
193
194 /* Submit command */
195 cmd.len[0] = sizeof(*tx_beacon_cmd);
196 cmd.data[0] = tx_beacon_cmd;
197 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
198 cmd.len[1] = frame_size;
199 cmd.data[1] = priv->beacon_skb->data;
200 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
201
202 return iwl_trans_send_cmd(trans(priv), &cmd);
203 }
204
205 static void iwl_bg_beacon_update(struct work_struct *work)
206 {
207 struct iwl_priv *priv =
208 container_of(work, struct iwl_priv, beacon_update);
209 struct sk_buff *beacon;
210
211 mutex_lock(&priv->shrd->mutex);
212 if (!priv->beacon_ctx) {
213 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
214 goto out;
215 }
216
217 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
218 /*
219 * The ucode will send beacon notifications even in
220 * IBSS mode, but we don't want to process them. But
221 * we need to defer the type check to here due to
222 * requiring locking around the beacon_ctx access.
223 */
224 goto out;
225 }
226
227 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
228 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
229 if (!beacon) {
230 IWL_ERR(priv, "update beacon failed -- keeping old\n");
231 goto out;
232 }
233
234 /* new beacon skb is allocated every time; dispose previous.*/
235 dev_kfree_skb(priv->beacon_skb);
236
237 priv->beacon_skb = beacon;
238
239 iwlagn_send_beacon_cmd(priv);
240 out:
241 mutex_unlock(&priv->shrd->mutex);
242 }
243
244 static void iwl_bg_bt_runtime_config(struct work_struct *work)
245 {
246 struct iwl_priv *priv =
247 container_of(work, struct iwl_priv, bt_runtime_config);
248
249 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
250 return;
251
252 /* dont send host command if rf-kill is on */
253 if (!iwl_is_ready_rf(priv->shrd))
254 return;
255 iwlagn_send_advance_bt_config(priv);
256 }
257
258 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
259 {
260 struct iwl_priv *priv =
261 container_of(work, struct iwl_priv, bt_full_concurrency);
262 struct iwl_rxon_context *ctx;
263
264 mutex_lock(&priv->shrd->mutex);
265
266 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
267 goto out;
268
269 /* dont send host command if rf-kill is on */
270 if (!iwl_is_ready_rf(priv->shrd))
271 goto out;
272
273 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
274 priv->bt_full_concurrent ?
275 "full concurrency" : "3-wire");
276
277 /*
278 * LQ & RXON updated cmds must be sent before BT Config cmd
279 * to avoid 3-wire collisions
280 */
281 for_each_context(priv, ctx) {
282 iwlagn_set_rxon_chain(priv, ctx);
283 iwlagn_commit_rxon(priv, ctx);
284 }
285
286 iwlagn_send_advance_bt_config(priv);
287 out:
288 mutex_unlock(&priv->shrd->mutex);
289 }
290
291 /**
292 * iwl_bg_statistics_periodic - Timer callback to queue statistics
293 *
294 * This callback is provided in order to send a statistics request.
295 *
296 * This timer function is continually reset to execute within
297 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
298 * was received. We need to ensure we receive the statistics in order
299 * to update the temperature used for calibrating the TXPOWER.
300 */
301 static void iwl_bg_statistics_periodic(unsigned long data)
302 {
303 struct iwl_priv *priv = (struct iwl_priv *)data;
304
305 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
306 return;
307
308 /* dont send host command if rf-kill is on */
309 if (!iwl_is_ready_rf(priv->shrd))
310 return;
311
312 iwl_send_statistics_request(priv, CMD_ASYNC, false);
313 }
314
315
316 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
317 u32 start_idx, u32 num_events,
318 u32 capacity, u32 mode)
319 {
320 u32 i;
321 u32 ptr; /* SRAM byte address of log data */
322 u32 ev, time, data; /* event log data */
323 unsigned long reg_flags;
324
325 if (mode == 0)
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
327 else
328 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
329
330 /* Make sure device is powered up for SRAM reads */
331 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
332 if (iwl_grab_nic_access(trans(priv))) {
333 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
334 return;
335 }
336
337 /* Set starting address; reads will auto-increment */
338 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
339 rmb();
340
341 /*
342 * Refuse to read more than would have fit into the log from
343 * the current start_idx. This used to happen due to the race
344 * described below, but now WARN because the code below should
345 * prevent it from happening here.
346 */
347 if (WARN_ON(num_events > capacity - start_idx))
348 num_events = capacity - start_idx;
349
350 /*
351 * "time" is actually "data" for mode 0 (no timestamp).
352 * place event id # at far right for easier visual parsing.
353 */
354 for (i = 0; i < num_events; i++) {
355 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
356 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
357 if (mode == 0) {
358 trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev);
359 } else {
360 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
361 trace_iwlwifi_dev_ucode_cont_event(priv, time,
362 data, ev);
363 }
364 }
365 /* Allow device to power down */
366 iwl_release_nic_access(trans(priv));
367 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
368 }
369
370 static void iwl_continuous_event_trace(struct iwl_priv *priv)
371 {
372 u32 capacity; /* event log capacity in # entries */
373 struct {
374 u32 capacity;
375 u32 mode;
376 u32 wrap_counter;
377 u32 write_counter;
378 } __packed read;
379 u32 base; /* SRAM byte address of event log header */
380 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
381 u32 num_wraps; /* # times uCode wrapped to top of log */
382 u32 next_entry; /* index of next entry to be written by uCode */
383
384 base = priv->shrd->device_pointers.log_event_table;
385 if (iwlagn_hw_valid_rtc_data_addr(base)) {
386 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
387
388 capacity = read.capacity;
389 mode = read.mode;
390 num_wraps = read.wrap_counter;
391 next_entry = read.write_counter;
392 } else
393 return;
394
395 /*
396 * Unfortunately, the uCode doesn't use temporary variables.
397 * Therefore, it can happen that we read next_entry == capacity,
398 * which really means next_entry == 0.
399 */
400 if (unlikely(next_entry == capacity))
401 next_entry = 0;
402 /*
403 * Additionally, the uCode increases the write pointer before
404 * the wraps counter, so if the write pointer is smaller than
405 * the old write pointer (wrap occurred) but we read that no
406 * wrap occurred, we actually read between the next_entry and
407 * num_wraps update (this does happen in practice!!) -- take
408 * that into account by increasing num_wraps.
409 */
410 if (unlikely(next_entry < priv->event_log.next_entry &&
411 num_wraps == priv->event_log.num_wraps))
412 num_wraps++;
413
414 if (num_wraps == priv->event_log.num_wraps) {
415 iwl_print_cont_event_trace(
416 priv, base, priv->event_log.next_entry,
417 next_entry - priv->event_log.next_entry,
418 capacity, mode);
419
420 priv->event_log.non_wraps_count++;
421 } else {
422 if (num_wraps - priv->event_log.num_wraps > 1)
423 priv->event_log.wraps_more_count++;
424 else
425 priv->event_log.wraps_once_count++;
426
427 trace_iwlwifi_dev_ucode_wrap_event(priv,
428 num_wraps - priv->event_log.num_wraps,
429 next_entry, priv->event_log.next_entry);
430
431 if (next_entry < priv->event_log.next_entry) {
432 iwl_print_cont_event_trace(
433 priv, base, priv->event_log.next_entry,
434 capacity - priv->event_log.next_entry,
435 capacity, mode);
436
437 iwl_print_cont_event_trace(
438 priv, base, 0, next_entry, capacity, mode);
439 } else {
440 iwl_print_cont_event_trace(
441 priv, base, next_entry,
442 capacity - next_entry,
443 capacity, mode);
444
445 iwl_print_cont_event_trace(
446 priv, base, 0, next_entry, capacity, mode);
447 }
448 }
449
450 priv->event_log.num_wraps = num_wraps;
451 priv->event_log.next_entry = next_entry;
452 }
453
454 /**
455 * iwl_bg_ucode_trace - Timer callback to log ucode event
456 *
457 * The timer is continually set to execute every
458 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
459 * this function is to perform continuous uCode event logging operation
460 * if enabled
461 */
462 static void iwl_bg_ucode_trace(unsigned long data)
463 {
464 struct iwl_priv *priv = (struct iwl_priv *)data;
465
466 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
467 return;
468
469 if (priv->event_log.ucode_trace) {
470 iwl_continuous_event_trace(priv);
471 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
472 mod_timer(&priv->ucode_trace,
473 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
474 }
475 }
476
477 static void iwl_bg_tx_flush(struct work_struct *work)
478 {
479 struct iwl_priv *priv =
480 container_of(work, struct iwl_priv, tx_flush);
481
482 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
483 return;
484
485 /* do nothing if rf-kill is on */
486 if (!iwl_is_ready_rf(priv->shrd))
487 return;
488
489 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
490 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
491 }
492
493 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
494 {
495 int i;
496
497 /*
498 * The default context is always valid,
499 * the PAN context depends on uCode.
500 */
501 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
502 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
503 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
504
505 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
506 priv->contexts[i].ctxid = i;
507
508 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
509 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
510 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
511 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
512 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
513 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
514 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
515 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
516 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
517 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
518 BIT(NL80211_IFTYPE_ADHOC);
519 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
520 BIT(NL80211_IFTYPE_STATION);
521 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
522 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
523 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
524 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
525
526 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
527 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
528 REPLY_WIPAN_RXON_TIMING;
529 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
530 REPLY_WIPAN_RXON_ASSOC;
531 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
532 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
533 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
534 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
535 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
536 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
537 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
538
539 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
540 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
541 BIT(NL80211_IFTYPE_P2P_CLIENT) |
542 BIT(NL80211_IFTYPE_P2P_GO);
543
544 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
545 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
546 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
547
548 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
549 }
550
551 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
552 {
553 struct iwl_ct_kill_config cmd;
554 struct iwl_ct_kill_throttling_config adv_cmd;
555 unsigned long flags;
556 int ret = 0;
557
558 spin_lock_irqsave(&priv->shrd->lock, flags);
559 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
560 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
561 spin_unlock_irqrestore(&priv->shrd->lock, flags);
562 priv->thermal_throttle.ct_kill_toggle = false;
563
564 if (cfg(priv)->base_params->support_ct_kill_exit) {
565 adv_cmd.critical_temperature_enter =
566 cpu_to_le32(hw_params(priv).ct_kill_threshold);
567 adv_cmd.critical_temperature_exit =
568 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
569
570 ret = iwl_trans_send_cmd_pdu(trans(priv),
571 REPLY_CT_KILL_CONFIG_CMD,
572 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
573 if (ret)
574 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
575 else
576 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
577 "succeeded, critical temperature enter is %d,"
578 "exit is %d\n",
579 hw_params(priv).ct_kill_threshold,
580 hw_params(priv).ct_kill_exit_threshold);
581 } else {
582 cmd.critical_temperature_R =
583 cpu_to_le32(hw_params(priv).ct_kill_threshold);
584
585 ret = iwl_trans_send_cmd_pdu(trans(priv),
586 REPLY_CT_KILL_CONFIG_CMD,
587 CMD_SYNC, sizeof(cmd), &cmd);
588 if (ret)
589 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
590 else
591 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
592 "succeeded, "
593 "critical temperature is %d\n",
594 hw_params(priv).ct_kill_threshold);
595 }
596 }
597
598 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
599 {
600 struct iwl_calib_cfg_cmd calib_cfg_cmd;
601 struct iwl_host_cmd cmd = {
602 .id = CALIBRATION_CFG_CMD,
603 .len = { sizeof(struct iwl_calib_cfg_cmd), },
604 .data = { &calib_cfg_cmd, },
605 };
606
607 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
608 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
609 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
610
611 return iwl_trans_send_cmd(trans(priv), &cmd);
612 }
613
614
615 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
616 {
617 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
618 .valid = cpu_to_le32(valid_tx_ant),
619 };
620
621 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
622 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
623 return iwl_trans_send_cmd_pdu(trans(priv),
624 TX_ANT_CONFIGURATION_CMD,
625 CMD_SYNC,
626 sizeof(struct iwl_tx_ant_config_cmd),
627 &tx_ant_cmd);
628 } else {
629 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
630 return -EOPNOTSUPP;
631 }
632 }
633
634 /**
635 * iwl_alive_start - called after REPLY_ALIVE notification received
636 * from protocol/runtime uCode (initialization uCode's
637 * Alive gets handled by iwl_init_alive_start()).
638 */
639 int iwl_alive_start(struct iwl_priv *priv)
640 {
641 int ret = 0;
642 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
643
644 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
645
646 /* After the ALIVE response, we can send host commands to the uCode */
647 set_bit(STATUS_ALIVE, &priv->shrd->status);
648
649 /* Enable watchdog to monitor the driver tx queues */
650 iwl_setup_watchdog(priv);
651
652 if (iwl_is_rfkill(priv->shrd))
653 return -ERFKILL;
654
655 if (priv->event_log.ucode_trace) {
656 /* start collecting data now */
657 mod_timer(&priv->ucode_trace, jiffies);
658 }
659
660 /* download priority table before any calibration request */
661 if (cfg(priv)->bt_params &&
662 cfg(priv)->bt_params->advanced_bt_coexist) {
663 /* Configure Bluetooth device coexistence support */
664 if (cfg(priv)->bt_params->bt_sco_disable)
665 priv->bt_enable_pspoll = false;
666 else
667 priv->bt_enable_pspoll = true;
668
669 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
670 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
671 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
672 iwlagn_send_advance_bt_config(priv);
673 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
674 priv->cur_rssi_ctx = NULL;
675
676 iwl_send_prio_tbl(trans(priv));
677
678 /* FIXME: w/a to force change uCode BT state machine */
679 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
680 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
681 if (ret)
682 return ret;
683 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
684 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
685 if (ret)
686 return ret;
687 } else {
688 /*
689 * default is 2-wire BT coexexistence support
690 */
691 iwl_send_bt_config(priv);
692 }
693
694 /*
695 * Perform runtime calibrations, including DC calibration.
696 */
697 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
698
699 ieee80211_wake_queues(priv->hw);
700
701 priv->active_rate = IWL_RATES_MASK;
702
703 /* Configure Tx antenna selection based on H/W config */
704 iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
705
706 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
707 struct iwl_rxon_cmd *active_rxon =
708 (struct iwl_rxon_cmd *)&ctx->active;
709 /* apply any changes in staging */
710 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
711 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
712 } else {
713 struct iwl_rxon_context *tmp;
714 /* Initialize our rx_config data */
715 for_each_context(priv, tmp)
716 iwl_connection_init_rx_config(priv, tmp);
717
718 iwlagn_set_rxon_chain(priv, ctx);
719 }
720
721 if (!priv->shrd->wowlan) {
722 /* WoWLAN ucode will not reply in the same way, skip it */
723 iwl_reset_run_time_calib(priv);
724 }
725
726 set_bit(STATUS_READY, &priv->shrd->status);
727
728 /* Configure the adapter for unassociated operation */
729 ret = iwlagn_commit_rxon(priv, ctx);
730 if (ret)
731 return ret;
732
733 /* At this point, the NIC is initialized and operational */
734 iwl_rf_kill_ct_config(priv);
735
736 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
737
738 return iwl_power_update_mode(priv, true);
739 }
740
741 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
742
743 void __iwl_down(struct iwl_priv *priv)
744 {
745 int exit_pending;
746
747 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
748
749 iwl_scan_cancel_timeout(priv, 200);
750
751 /*
752 * If active, scanning won't cancel it, so say it expired.
753 * No race since we hold the mutex here and a new one
754 * can't come in at this time.
755 */
756 ieee80211_remain_on_channel_expired(priv->hw);
757
758 exit_pending =
759 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
760
761 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
762 * to prevent rearm timer */
763 del_timer_sync(&priv->watchdog);
764
765 iwl_clear_ucode_stations(priv, NULL);
766 iwl_dealloc_bcast_stations(priv);
767 iwl_clear_driver_stations(priv);
768
769 /* reset BT coex data */
770 priv->bt_status = 0;
771 priv->cur_rssi_ctx = NULL;
772 priv->bt_is_sco = 0;
773 if (cfg(priv)->bt_params)
774 priv->bt_traffic_load =
775 cfg(priv)->bt_params->bt_init_traffic_load;
776 else
777 priv->bt_traffic_load = 0;
778 priv->bt_full_concurrent = false;
779 priv->bt_ci_compliance = 0;
780
781 /* Wipe out the EXIT_PENDING status bit if we are not actually
782 * exiting the module */
783 if (!exit_pending)
784 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
785
786 if (priv->mac80211_registered)
787 ieee80211_stop_queues(priv->hw);
788
789 iwl_trans_stop_device(trans(priv));
790
791 /* Clear out all status bits but a few that are stable across reset */
792 priv->shrd->status &=
793 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
794 STATUS_RF_KILL_HW |
795 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
796 STATUS_GEO_CONFIGURED |
797 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
798 STATUS_FW_ERROR |
799 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
800 STATUS_EXIT_PENDING;
801
802 dev_kfree_skb(priv->beacon_skb);
803 priv->beacon_skb = NULL;
804 }
805
806 void iwl_down(struct iwl_priv *priv)
807 {
808 mutex_lock(&priv->shrd->mutex);
809 __iwl_down(priv);
810 mutex_unlock(&priv->shrd->mutex);
811
812 iwl_cancel_deferred_work(priv);
813 }
814
815 /*****************************************************************************
816 *
817 * Workqueue callbacks
818 *
819 *****************************************************************************/
820
821 static void iwl_bg_run_time_calib_work(struct work_struct *work)
822 {
823 struct iwl_priv *priv = container_of(work, struct iwl_priv,
824 run_time_calib_work);
825
826 mutex_lock(&priv->shrd->mutex);
827
828 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
829 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
830 mutex_unlock(&priv->shrd->mutex);
831 return;
832 }
833
834 if (priv->start_calib) {
835 iwl_chain_noise_calibration(priv);
836 iwl_sensitivity_calibration(priv);
837 }
838
839 mutex_unlock(&priv->shrd->mutex);
840 }
841
842 void iwlagn_prepare_restart(struct iwl_priv *priv)
843 {
844 struct iwl_rxon_context *ctx;
845 bool bt_full_concurrent;
846 u8 bt_ci_compliance;
847 u8 bt_load;
848 u8 bt_status;
849 bool bt_is_sco;
850
851 lockdep_assert_held(&priv->shrd->mutex);
852
853 for_each_context(priv, ctx)
854 ctx->vif = NULL;
855 priv->is_open = 0;
856
857 /*
858 * __iwl_down() will clear the BT status variables,
859 * which is correct, but when we restart we really
860 * want to keep them so restore them afterwards.
861 *
862 * The restart process will later pick them up and
863 * re-configure the hw when we reconfigure the BT
864 * command.
865 */
866 bt_full_concurrent = priv->bt_full_concurrent;
867 bt_ci_compliance = priv->bt_ci_compliance;
868 bt_load = priv->bt_traffic_load;
869 bt_status = priv->bt_status;
870 bt_is_sco = priv->bt_is_sco;
871
872 __iwl_down(priv);
873
874 priv->bt_full_concurrent = bt_full_concurrent;
875 priv->bt_ci_compliance = bt_ci_compliance;
876 priv->bt_traffic_load = bt_load;
877 priv->bt_status = bt_status;
878 priv->bt_is_sco = bt_is_sco;
879 }
880
881 static void iwl_bg_restart(struct work_struct *data)
882 {
883 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
884
885 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
886 return;
887
888 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
889 mutex_lock(&priv->shrd->mutex);
890 iwlagn_prepare_restart(priv);
891 mutex_unlock(&priv->shrd->mutex);
892 iwl_cancel_deferred_work(priv);
893 ieee80211_restart_hw(priv->hw);
894 } else {
895 WARN_ON(1);
896 }
897 }
898
899
900
901
902 void iwlagn_disable_roc(struct iwl_priv *priv)
903 {
904 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
905
906 lockdep_assert_held(&priv->shrd->mutex);
907
908 if (!priv->hw_roc_setup)
909 return;
910
911 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
912 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
913
914 priv->hw_roc_channel = NULL;
915
916 memset(ctx->staging.node_addr, 0, ETH_ALEN);
917
918 iwlagn_commit_rxon(priv, ctx);
919
920 ctx->is_active = false;
921 priv->hw_roc_setup = false;
922 }
923
924 static void iwlagn_disable_roc_work(struct work_struct *work)
925 {
926 struct iwl_priv *priv = container_of(work, struct iwl_priv,
927 hw_roc_disable_work.work);
928
929 mutex_lock(&priv->shrd->mutex);
930 iwlagn_disable_roc(priv);
931 mutex_unlock(&priv->shrd->mutex);
932 }
933
934 /*****************************************************************************
935 *
936 * driver setup and teardown
937 *
938 *****************************************************************************/
939
940 static void iwl_setup_deferred_work(struct iwl_priv *priv)
941 {
942 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
943
944 init_waitqueue_head(&priv->shrd->wait_command_queue);
945
946 INIT_WORK(&priv->restart, iwl_bg_restart);
947 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
948 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
949 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
950 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
951 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
952 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
953 iwlagn_disable_roc_work);
954
955 iwl_setup_scan_deferred_work(priv);
956
957 if (cfg(priv)->lib->bt_setup_deferred_work)
958 cfg(priv)->lib->bt_setup_deferred_work(priv);
959
960 init_timer(&priv->statistics_periodic);
961 priv->statistics_periodic.data = (unsigned long)priv;
962 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
963
964 init_timer(&priv->ucode_trace);
965 priv->ucode_trace.data = (unsigned long)priv;
966 priv->ucode_trace.function = iwl_bg_ucode_trace;
967
968 init_timer(&priv->watchdog);
969 priv->watchdog.data = (unsigned long)priv;
970 priv->watchdog.function = iwl_bg_watchdog;
971 }
972
973 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
974 {
975 if (cfg(priv)->lib->cancel_deferred_work)
976 cfg(priv)->lib->cancel_deferred_work(priv);
977
978 cancel_work_sync(&priv->run_time_calib_work);
979 cancel_work_sync(&priv->beacon_update);
980
981 iwl_cancel_scan_deferred_work(priv);
982
983 cancel_work_sync(&priv->bt_full_concurrency);
984 cancel_work_sync(&priv->bt_runtime_config);
985 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
986
987 del_timer_sync(&priv->statistics_periodic);
988 del_timer_sync(&priv->ucode_trace);
989 }
990
991 static void iwl_init_hw_rates(struct iwl_priv *priv,
992 struct ieee80211_rate *rates)
993 {
994 int i;
995
996 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
997 rates[i].bitrate = iwl_rates[i].ieee * 5;
998 rates[i].hw_value = i; /* Rate scaling will work on indexes */
999 rates[i].hw_value_short = i;
1000 rates[i].flags = 0;
1001 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1002 /*
1003 * If CCK != 1M then set short preamble rate flag.
1004 */
1005 rates[i].flags |=
1006 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1007 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1008 }
1009 }
1010 }
1011
1012 static int iwl_init_drv(struct iwl_priv *priv)
1013 {
1014 int ret;
1015
1016 spin_lock_init(&priv->shrd->sta_lock);
1017
1018 mutex_init(&priv->shrd->mutex);
1019
1020 INIT_LIST_HEAD(&trans(priv)->calib_results);
1021
1022 priv->ieee_channels = NULL;
1023 priv->ieee_rates = NULL;
1024 priv->band = IEEE80211_BAND_2GHZ;
1025
1026 priv->iw_mode = NL80211_IFTYPE_STATION;
1027 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1028 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1029 priv->agg_tids_count = 0;
1030
1031 /* initialize force reset */
1032 priv->force_reset[IWL_RF_RESET].reset_duration =
1033 IWL_DELAY_NEXT_FORCE_RF_RESET;
1034 priv->force_reset[IWL_FW_RESET].reset_duration =
1035 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1036
1037 priv->rx_statistics_jiffies = jiffies;
1038
1039 /* Choose which receivers/antennas to use */
1040 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1041
1042 iwl_init_scan_params(priv);
1043
1044 /* init bt coex */
1045 if (cfg(priv)->bt_params &&
1046 cfg(priv)->bt_params->advanced_bt_coexist) {
1047 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1048 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1049 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1050 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1051 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1052 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1053 }
1054
1055 ret = iwl_init_channel_map(priv);
1056 if (ret) {
1057 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1058 goto err;
1059 }
1060
1061 ret = iwl_init_geos(priv);
1062 if (ret) {
1063 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1064 goto err_free_channel_map;
1065 }
1066 iwl_init_hw_rates(priv, priv->ieee_rates);
1067
1068 return 0;
1069
1070 err_free_channel_map:
1071 iwl_free_channel_map(priv);
1072 err:
1073 return ret;
1074 }
1075
1076 static void iwl_uninit_drv(struct iwl_priv *priv)
1077 {
1078 iwl_free_geos(priv);
1079 iwl_free_channel_map(priv);
1080 if (priv->tx_cmd_pool)
1081 kmem_cache_destroy(priv->tx_cmd_pool);
1082 kfree(priv->scan_cmd);
1083 kfree(priv->beacon_cmd);
1084 kfree(rcu_dereference_raw(priv->noa_data));
1085 #ifdef CONFIG_IWLWIFI_DEBUGFS
1086 kfree(priv->wowlan_sram);
1087 #endif
1088 }
1089
1090 /* Size of one Rx buffer in host DRAM */
1091 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1092 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1093
1094 static int iwl_set_hw_params(struct iwl_priv *priv)
1095 {
1096 if (iwlagn_mod_params.amsdu_size_8K)
1097 hw_params(priv).rx_page_order =
1098 get_order(IWL_RX_BUF_SIZE_8K);
1099 else
1100 hw_params(priv).rx_page_order =
1101 get_order(IWL_RX_BUF_SIZE_4K);
1102
1103 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1104 cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1105
1106 hw_params(priv).num_ampdu_queues =
1107 cfg(priv)->base_params->num_of_ampdu_queues;
1108 hw_params(priv).shadow_reg_enable =
1109 cfg(priv)->base_params->shadow_reg_enable;
1110 hw_params(priv).sku = cfg(priv)->sku;
1111 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1112
1113 /* Device-specific setup */
1114 return cfg(priv)->lib->set_hw_params(priv);
1115 }
1116
1117
1118
1119 static void iwl_debug_config(struct iwl_priv *priv)
1120 {
1121 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1122 #ifdef CONFIG_IWLWIFI_DEBUG
1123 "enabled\n");
1124 #else
1125 "disabled\n");
1126 #endif
1127 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1128 #ifdef CONFIG_IWLWIFI_DEBUGFS
1129 "enabled\n");
1130 #else
1131 "disabled\n");
1132 #endif
1133 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1134 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1135 "enabled\n");
1136 #else
1137 "disabled\n");
1138 #endif
1139
1140 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1141 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1142 "enabled\n");
1143 #else
1144 "disabled\n");
1145 #endif
1146 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1147 #ifdef CONFIG_IWLWIFI_P2P
1148 "enabled\n");
1149 #else
1150 "disabled\n");
1151 #endif
1152 }
1153
1154 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
1155 struct iwl_cfg *cfg)
1156 {
1157 int err = 0;
1158 struct iwl_priv *priv;
1159 struct ieee80211_hw *hw;
1160 u16 num_mac;
1161
1162 /************************
1163 * 1. Allocating HW data
1164 ************************/
1165 hw = iwl_alloc_all();
1166 if (!hw) {
1167 pr_err("%s: Cannot allocate network device\n", cfg->name);
1168 err = -ENOMEM;
1169 goto out;
1170 }
1171
1172 priv = hw->priv;
1173 priv->shrd = bus->shrd;
1174 priv->shrd->priv = priv;
1175
1176 /* At this point both hw and priv are allocated. */
1177
1178 SET_IEEE80211_DEV(hw, trans(priv)->dev);
1179
1180 /* show what debugging capabilities we have */
1181 iwl_debug_config(priv);
1182
1183 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1184 cfg(priv) = cfg;
1185
1186 /* is antenna coupling more than 35dB ? */
1187 priv->bt_ant_couple_ok =
1188 (iwlagn_mod_params.ant_coupling >
1189 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1190 true : false;
1191
1192 /* enable/disable bt channel inhibition */
1193 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1194 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1195 (priv->bt_ch_announce) ? "On" : "Off");
1196
1197 if (iwl_alloc_traffic_mem(priv))
1198 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1199
1200 /* these spin locks will be used in apm_ops.init and EEPROM access
1201 * we should init now
1202 */
1203 spin_lock_init(&trans(priv)->reg_lock);
1204 spin_lock_init(&priv->shrd->lock);
1205
1206 /***********************
1207 * 3. Read REV register
1208 ***********************/
1209 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1210 cfg(priv)->name, trans(priv)->hw_rev);
1211
1212 err = iwl_trans_start_hw(trans(priv));
1213 if (err)
1214 goto out_free_traffic_mem;
1215
1216 /*****************
1217 * 4. Read EEPROM
1218 *****************/
1219 /* Read the EEPROM */
1220 err = iwl_eeprom_init(priv, trans(priv)->hw_rev);
1221 /* Reset chip to save power until we load uCode during "up". */
1222 iwl_trans_stop_hw(trans(priv));
1223 if (err) {
1224 IWL_ERR(priv, "Unable to init EEPROM\n");
1225 goto out_free_traffic_mem;
1226 }
1227 err = iwl_eeprom_check_version(priv);
1228 if (err)
1229 goto out_free_eeprom;
1230
1231 err = iwl_eeprom_check_sku(priv);
1232 if (err)
1233 goto out_free_eeprom;
1234
1235 /* extract MAC Address */
1236 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1237 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1238 priv->hw->wiphy->addresses = priv->addresses;
1239 priv->hw->wiphy->n_addresses = 1;
1240 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1241 if (num_mac > 1) {
1242 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1243 ETH_ALEN);
1244 priv->addresses[1].addr[5]++;
1245 priv->hw->wiphy->n_addresses++;
1246 }
1247
1248 /************************
1249 * 5. Setup HW constants
1250 ************************/
1251 if (iwl_set_hw_params(priv)) {
1252 err = -ENOENT;
1253 IWL_ERR(priv, "failed to set hw parameters\n");
1254 goto out_free_eeprom;
1255 }
1256
1257 /*******************
1258 * 6. Setup priv
1259 *******************/
1260
1261 err = iwl_init_drv(priv);
1262 if (err)
1263 goto out_free_eeprom;
1264 /* At this point both hw and priv are initialized. */
1265
1266 /********************
1267 * 7. Setup services
1268 ********************/
1269 iwl_setup_deferred_work(priv);
1270 iwl_setup_rx_handlers(priv);
1271 iwl_testmode_init(priv);
1272
1273 iwl_power_initialize(priv);
1274 iwl_tt_initialize(priv);
1275
1276 init_completion(&priv->firmware_loading_complete);
1277
1278 err = iwl_request_firmware(priv, true);
1279 if (err)
1280 goto out_destroy_workqueue;
1281
1282 return 0;
1283
1284 out_destroy_workqueue:
1285 destroy_workqueue(priv->workqueue);
1286 priv->workqueue = NULL;
1287 iwl_uninit_drv(priv);
1288 out_free_eeprom:
1289 iwl_eeprom_free(priv->shrd);
1290 out_free_traffic_mem:
1291 iwl_free_traffic_mem(priv);
1292 ieee80211_free_hw(priv->hw);
1293 out:
1294 return err;
1295 }
1296
1297 void __devexit iwl_remove(struct iwl_priv * priv)
1298 {
1299 wait_for_completion(&priv->firmware_loading_complete);
1300
1301 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1302
1303 iwl_dbgfs_unregister(priv);
1304
1305 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1306 * to be called and iwl_down since we are removing the device
1307 * we need to set STATUS_EXIT_PENDING bit.
1308 */
1309 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1310
1311 iwl_testmode_cleanup(priv);
1312 iwlagn_mac_unregister(priv);
1313
1314 iwl_tt_exit(priv);
1315
1316 /*This will stop the queues, move the device to low power state */
1317 iwl_trans_stop_device(trans(priv));
1318
1319 iwl_dealloc_ucode(trans(priv));
1320
1321 iwl_eeprom_free(priv->shrd);
1322
1323 /*netif_stop_queue(dev); */
1324 flush_workqueue(priv->workqueue);
1325
1326 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1327 * priv->workqueue... so we can't take down the workqueue
1328 * until now... */
1329 destroy_workqueue(priv->workqueue);
1330 priv->workqueue = NULL;
1331 iwl_free_traffic_mem(priv);
1332
1333 iwl_uninit_drv(priv);
1334
1335 dev_kfree_skb(priv->beacon_skb);
1336
1337 ieee80211_free_hw(priv->hw);
1338 }
1339
1340
1341 /*****************************************************************************
1342 *
1343 * driver and module entry point
1344 *
1345 *****************************************************************************/
1346 static int __init iwl_init(void)
1347 {
1348
1349 int ret;
1350 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1351 pr_info(DRV_COPYRIGHT "\n");
1352
1353 ret = iwlagn_rate_control_register();
1354 if (ret) {
1355 pr_err("Unable to register rate control algorithm: %d\n", ret);
1356 return ret;
1357 }
1358
1359 ret = iwl_pci_register_driver();
1360
1361 if (ret)
1362 goto error_register;
1363 return ret;
1364
1365 error_register:
1366 iwlagn_rate_control_unregister();
1367 return ret;
1368 }
1369
1370 static void __exit iwl_exit(void)
1371 {
1372 iwl_pci_unregister_driver();
1373 iwlagn_rate_control_unregister();
1374 }
1375
1376 module_exit(iwl_exit);
1377 module_init(iwl_init);
1378
1379 #ifdef CONFIG_IWLWIFI_DEBUG
1380 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1381 S_IRUGO | S_IWUSR);
1382 MODULE_PARM_DESC(debug, "debug output mask");
1383 #endif
1384
1385 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1386 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1387 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1388 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1389 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1390 MODULE_PARM_DESC(11n_disable,
1391 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1392 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1393 int, S_IRUGO);
1394 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1395 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
1396 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1397
1398 module_param_named(ucode_alternative,
1399 iwlagn_mod_params.wanted_ucode_alternative,
1400 int, S_IRUGO);
1401 MODULE_PARM_DESC(ucode_alternative,
1402 "specify ucode alternative to use from ucode file");
1403
1404 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
1405 int, S_IRUGO);
1406 MODULE_PARM_DESC(antenna_coupling,
1407 "specify antenna coupling in dB (defualt: 0 dB)");
1408
1409 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
1410 bool, S_IRUGO);
1411 MODULE_PARM_DESC(bt_ch_inhibition,
1412 "Enable BT channel inhibition (default: enable)");
1413
1414 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
1415 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1416
1417 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
1418 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1419
1420 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1421 MODULE_PARM_DESC(wd_disable,
1422 "Disable stuck queue watchdog timer 0=system default, "
1423 "1=disable, 2=enable (default: 0)");
1424
1425 /*
1426 * set bt_coex_active to true, uCode will do kill/defer
1427 * every time the priority line is asserted (BT is sending signals on the
1428 * priority line in the PCIx).
1429 * set bt_coex_active to false, uCode will ignore the BT activity and
1430 * perform the normal operation
1431 *
1432 * User might experience transmit issue on some platform due to WiFi/BT
1433 * co-exist problem. The possible behaviors are:
1434 * Able to scan and finding all the available AP
1435 * Not able to associate with any AP
1436 * On those platforms, WiFi communication can be restored by set
1437 * "bt_coex_active" module parameter to "false"
1438 *
1439 * default: bt_coex_active = true (BT_COEX_ENABLE)
1440 */
1441 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
1442 bool, S_IRUGO);
1443 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1444
1445 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
1446 MODULE_PARM_DESC(led_mode, "0=system default, "
1447 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1448
1449 module_param_named(power_save, iwlagn_mod_params.power_save,
1450 bool, S_IRUGO);
1451 MODULE_PARM_DESC(power_save,
1452 "enable WiFi power management (default: disable)");
1453
1454 module_param_named(power_level, iwlagn_mod_params.power_level,
1455 int, S_IRUGO);
1456 MODULE_PARM_DESC(power_level,
1457 "default power save level (range from 1 - 5, default: 1)");
1458
1459 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
1460 bool, S_IRUGO);
1461 MODULE_PARM_DESC(auto_agg,
1462 "enable agg w/o check traffic load (default: enable)");
1463
1464 /*
1465 * For now, keep using power level 1 instead of automatically
1466 * adjusting ...
1467 */
1468 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
1469 bool, S_IRUGO);
1470 MODULE_PARM_DESC(no_sleep_autoadjust,
1471 "don't automatically adjust sleep level "
1472 "according to maximum network latency (default: true)");
Linux kernel - Deliverables
This page took 0.069605 seconds and 5 git commands to generate.