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iwlwifi: virtualize the op_mode
[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 #include "iwl-op-mode.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->shrd->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 hw_params(priv).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_trans_send_cmd(trans(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->shrd->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->shrd->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->shrd->status))
251 return;
252
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv->shrd))
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->shrd->mutex);
266
267 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
268 goto out;
269
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv->shrd))
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->shrd->mutex);
290 }
291
292 /**
293 * iwl_bg_statistics_periodic - Timer callback to queue statistics
294 *
295 * This callback is provided in order to send a statistics request.
296 *
297 * This timer function is continually reset to execute within
298 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
299 * was received. We need to ensure we receive the statistics in order
300 * to update the temperature used for calibrating the TXPOWER.
301 */
302 static void iwl_bg_statistics_periodic(unsigned long data)
303 {
304 struct iwl_priv *priv = (struct iwl_priv *)data;
305
306 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
307 return;
308
309 /* dont send host command if rf-kill is on */
310 if (!iwl_is_ready_rf(priv->shrd))
311 return;
312
313 iwl_send_statistics_request(priv, CMD_ASYNC, false);
314 }
315
316
317 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
318 u32 start_idx, u32 num_events,
319 u32 capacity, u32 mode)
320 {
321 u32 i;
322 u32 ptr; /* SRAM byte address of log data */
323 u32 ev, time, data; /* event log data */
324 unsigned long reg_flags;
325
326 if (mode == 0)
327 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
328 else
329 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
330
331 /* Make sure device is powered up for SRAM reads */
332 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
333 if (iwl_grab_nic_access(trans(priv))) {
334 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
335 return;
336 }
337
338 /* Set starting address; reads will auto-increment */
339 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
340 rmb();
341
342 /*
343 * Refuse to read more than would have fit into the log from
344 * the current start_idx. This used to happen due to the race
345 * described below, but now WARN because the code below should
346 * prevent it from happening here.
347 */
348 if (WARN_ON(num_events > capacity - start_idx))
349 num_events = capacity - start_idx;
350
351 /*
352 * "time" is actually "data" for mode 0 (no timestamp).
353 * place event id # at far right for easier visual parsing.
354 */
355 for (i = 0; i < num_events; i++) {
356 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
357 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
358 if (mode == 0) {
359 trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev);
360 } else {
361 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
362 trace_iwlwifi_dev_ucode_cont_event(priv, time,
363 data, ev);
364 }
365 }
366 /* Allow device to power down */
367 iwl_release_nic_access(trans(priv));
368 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
369 }
370
371 static void iwl_continuous_event_trace(struct iwl_priv *priv)
372 {
373 u32 capacity; /* event log capacity in # entries */
374 struct {
375 u32 capacity;
376 u32 mode;
377 u32 wrap_counter;
378 u32 write_counter;
379 } __packed read;
380 u32 base; /* SRAM byte address of event log header */
381 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
382 u32 num_wraps; /* # times uCode wrapped to top of log */
383 u32 next_entry; /* index of next entry to be written by uCode */
384
385 base = priv->shrd->device_pointers.log_event_table;
386 if (iwlagn_hw_valid_rtc_data_addr(base)) {
387 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
388
389 capacity = read.capacity;
390 mode = read.mode;
391 num_wraps = read.wrap_counter;
392 next_entry = read.write_counter;
393 } else
394 return;
395
396 /*
397 * Unfortunately, the uCode doesn't use temporary variables.
398 * Therefore, it can happen that we read next_entry == capacity,
399 * which really means next_entry == 0.
400 */
401 if (unlikely(next_entry == capacity))
402 next_entry = 0;
403 /*
404 * Additionally, the uCode increases the write pointer before
405 * the wraps counter, so if the write pointer is smaller than
406 * the old write pointer (wrap occurred) but we read that no
407 * wrap occurred, we actually read between the next_entry and
408 * num_wraps update (this does happen in practice!!) -- take
409 * that into account by increasing num_wraps.
410 */
411 if (unlikely(next_entry < priv->event_log.next_entry &&
412 num_wraps == priv->event_log.num_wraps))
413 num_wraps++;
414
415 if (num_wraps == priv->event_log.num_wraps) {
416 iwl_print_cont_event_trace(
417 priv, base, priv->event_log.next_entry,
418 next_entry - priv->event_log.next_entry,
419 capacity, mode);
420
421 priv->event_log.non_wraps_count++;
422 } else {
423 if (num_wraps - priv->event_log.num_wraps > 1)
424 priv->event_log.wraps_more_count++;
425 else
426 priv->event_log.wraps_once_count++;
427
428 trace_iwlwifi_dev_ucode_wrap_event(priv,
429 num_wraps - priv->event_log.num_wraps,
430 next_entry, priv->event_log.next_entry);
431
432 if (next_entry < priv->event_log.next_entry) {
433 iwl_print_cont_event_trace(
434 priv, base, priv->event_log.next_entry,
435 capacity - priv->event_log.next_entry,
436 capacity, mode);
437
438 iwl_print_cont_event_trace(
439 priv, base, 0, next_entry, capacity, mode);
440 } else {
441 iwl_print_cont_event_trace(
442 priv, base, next_entry,
443 capacity - next_entry,
444 capacity, mode);
445
446 iwl_print_cont_event_trace(
447 priv, base, 0, next_entry, capacity, mode);
448 }
449 }
450
451 priv->event_log.num_wraps = num_wraps;
452 priv->event_log.next_entry = next_entry;
453 }
454
455 /**
456 * iwl_bg_ucode_trace - Timer callback to log ucode event
457 *
458 * The timer is continually set to execute every
459 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
460 * this function is to perform continuous uCode event logging operation
461 * if enabled
462 */
463 static void iwl_bg_ucode_trace(unsigned long data)
464 {
465 struct iwl_priv *priv = (struct iwl_priv *)data;
466
467 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
468 return;
469
470 if (priv->event_log.ucode_trace) {
471 iwl_continuous_event_trace(priv);
472 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
473 mod_timer(&priv->ucode_trace,
474 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
475 }
476 }
477
478 static void iwl_bg_tx_flush(struct work_struct *work)
479 {
480 struct iwl_priv *priv =
481 container_of(work, struct iwl_priv, tx_flush);
482
483 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
484 return;
485
486 /* do nothing if rf-kill is on */
487 if (!iwl_is_ready_rf(priv->shrd))
488 return;
489
490 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
491 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
492 }
493
494 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
495 {
496 int i;
497
498 /*
499 * The default context is always valid,
500 * the PAN context depends on uCode.
501 */
502 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
503 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
504 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
505
506 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
507 priv->contexts[i].ctxid = i;
508
509 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
510 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
511 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
512 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
513 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
514 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
515 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
516 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
517 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
518 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
519 BIT(NL80211_IFTYPE_ADHOC);
520 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
521 BIT(NL80211_IFTYPE_STATION);
522 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
523 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
524 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
525 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
526
527 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
528 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
529 REPLY_WIPAN_RXON_TIMING;
530 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
531 REPLY_WIPAN_RXON_ASSOC;
532 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
533 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
534 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
535 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
536 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
537 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
538 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
539
540 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
541 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
542 BIT(NL80211_IFTYPE_P2P_CLIENT) |
543 BIT(NL80211_IFTYPE_P2P_GO);
544
545 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
546 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
547 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
548
549 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
550 }
551
552 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
553 {
554 struct iwl_ct_kill_config cmd;
555 struct iwl_ct_kill_throttling_config adv_cmd;
556 unsigned long flags;
557 int ret = 0;
558
559 spin_lock_irqsave(&priv->shrd->lock, flags);
560 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
561 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
562 spin_unlock_irqrestore(&priv->shrd->lock, flags);
563 priv->thermal_throttle.ct_kill_toggle = false;
564
565 if (cfg(priv)->base_params->support_ct_kill_exit) {
566 adv_cmd.critical_temperature_enter =
567 cpu_to_le32(hw_params(priv).ct_kill_threshold);
568 adv_cmd.critical_temperature_exit =
569 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
570
571 ret = iwl_trans_send_cmd_pdu(trans(priv),
572 REPLY_CT_KILL_CONFIG_CMD,
573 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
574 if (ret)
575 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
576 else
577 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
578 "succeeded, critical temperature enter is %d,"
579 "exit is %d\n",
580 hw_params(priv).ct_kill_threshold,
581 hw_params(priv).ct_kill_exit_threshold);
582 } else {
583 cmd.critical_temperature_R =
584 cpu_to_le32(hw_params(priv).ct_kill_threshold);
585
586 ret = iwl_trans_send_cmd_pdu(trans(priv),
587 REPLY_CT_KILL_CONFIG_CMD,
588 CMD_SYNC, sizeof(cmd), &cmd);
589 if (ret)
590 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
591 else
592 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
593 "succeeded, "
594 "critical temperature is %d\n",
595 hw_params(priv).ct_kill_threshold);
596 }
597 }
598
599 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
600 {
601 struct iwl_calib_cfg_cmd calib_cfg_cmd;
602 struct iwl_host_cmd cmd = {
603 .id = CALIBRATION_CFG_CMD,
604 .len = { sizeof(struct iwl_calib_cfg_cmd), },
605 .data = { &calib_cfg_cmd, },
606 };
607
608 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
609 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
610 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
611
612 return iwl_trans_send_cmd(trans(priv), &cmd);
613 }
614
615
616 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
617 {
618 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
619 .valid = cpu_to_le32(valid_tx_ant),
620 };
621
622 if (IWL_UCODE_API(nic(priv)->fw.ucode_ver) > 1) {
623 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
624 return iwl_trans_send_cmd_pdu(trans(priv),
625 TX_ANT_CONFIGURATION_CMD,
626 CMD_SYNC,
627 sizeof(struct iwl_tx_ant_config_cmd),
628 &tx_ant_cmd);
629 } else {
630 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
631 return -EOPNOTSUPP;
632 }
633 }
634
635 /**
636 * iwl_alive_start - called after REPLY_ALIVE notification received
637 * from protocol/runtime uCode (initialization uCode's
638 * Alive gets handled by iwl_init_alive_start()).
639 */
640 int iwl_alive_start(struct iwl_priv *priv)
641 {
642 int ret = 0;
643 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
644
645 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
646
647 /* After the ALIVE response, we can send host commands to the uCode */
648 set_bit(STATUS_ALIVE, &priv->shrd->status);
649
650 /* Enable watchdog to monitor the driver tx queues */
651 iwl_setup_watchdog(priv);
652
653 if (iwl_is_rfkill(priv->shrd))
654 return -ERFKILL;
655
656 if (priv->event_log.ucode_trace) {
657 /* start collecting data now */
658 mod_timer(&priv->ucode_trace, jiffies);
659 }
660
661 /* download priority table before any calibration request */
662 if (cfg(priv)->bt_params &&
663 cfg(priv)->bt_params->advanced_bt_coexist) {
664 /* Configure Bluetooth device coexistence support */
665 if (cfg(priv)->bt_params->bt_sco_disable)
666 priv->bt_enable_pspoll = false;
667 else
668 priv->bt_enable_pspoll = true;
669
670 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
671 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
672 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
673 iwlagn_send_advance_bt_config(priv);
674 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
675 priv->cur_rssi_ctx = NULL;
676
677 iwl_send_prio_tbl(trans(priv));
678
679 /* FIXME: w/a to force change uCode BT state machine */
680 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
681 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
682 if (ret)
683 return ret;
684 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
685 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
686 if (ret)
687 return ret;
688 } else {
689 /*
690 * default is 2-wire BT coexexistence support
691 */
692 iwl_send_bt_config(priv);
693 }
694
695 /*
696 * Perform runtime calibrations, including DC calibration.
697 */
698 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
699
700 ieee80211_wake_queues(priv->hw);
701
702 priv->active_rate = IWL_RATES_MASK;
703
704 /* Configure Tx antenna selection based on H/W config */
705 iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
706
707 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
708 struct iwl_rxon_cmd *active_rxon =
709 (struct iwl_rxon_cmd *)&ctx->active;
710 /* apply any changes in staging */
711 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
712 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
713 } else {
714 struct iwl_rxon_context *tmp;
715 /* Initialize our rx_config data */
716 for_each_context(priv, tmp)
717 iwl_connection_init_rx_config(priv, tmp);
718
719 iwlagn_set_rxon_chain(priv, ctx);
720 }
721
722 if (!priv->shrd->wowlan) {
723 /* WoWLAN ucode will not reply in the same way, skip it */
724 iwl_reset_run_time_calib(priv);
725 }
726
727 set_bit(STATUS_READY, &priv->shrd->status);
728
729 /* Configure the adapter for unassociated operation */
730 ret = iwlagn_commit_rxon(priv, ctx);
731 if (ret)
732 return ret;
733
734 /* At this point, the NIC is initialized and operational */
735 iwl_rf_kill_ct_config(priv);
736
737 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
738
739 return iwl_power_update_mode(priv, true);
740 }
741
742 void iwl_down(struct iwl_priv *priv)
743 {
744 int exit_pending;
745
746 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
747
748 lockdep_assert_held(&priv->shrd->mutex);
749
750 iwl_scan_cancel_timeout(priv, 200);
751
752 /*
753 * If active, scanning won't cancel it, so say it expired.
754 * No race since we hold the mutex here and a new one
755 * can't come in at this time.
756 */
757 ieee80211_remain_on_channel_expired(priv->hw);
758
759 exit_pending =
760 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
761
762 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
763 * to prevent rearm timer */
764 del_timer_sync(&priv->watchdog);
765
766 iwl_clear_ucode_stations(priv, NULL);
767 iwl_dealloc_bcast_stations(priv);
768 iwl_clear_driver_stations(priv);
769
770 /* reset BT coex data */
771 priv->bt_status = 0;
772 priv->cur_rssi_ctx = NULL;
773 priv->bt_is_sco = 0;
774 if (cfg(priv)->bt_params)
775 priv->bt_traffic_load =
776 cfg(priv)->bt_params->bt_init_traffic_load;
777 else
778 priv->bt_traffic_load = 0;
779 priv->bt_full_concurrent = false;
780 priv->bt_ci_compliance = 0;
781
782 /* Wipe out the EXIT_PENDING status bit if we are not actually
783 * exiting the module */
784 if (!exit_pending)
785 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
786
787 if (priv->mac80211_registered)
788 ieee80211_stop_queues(priv->hw);
789
790 iwl_trans_stop_device(trans(priv));
791
792 /* Clear out all status bits but a few that are stable across reset */
793 priv->shrd->status &=
794 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
795 STATUS_RF_KILL_HW |
796 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
797 STATUS_GEO_CONFIGURED |
798 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
799 STATUS_FW_ERROR |
800 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
801 STATUS_EXIT_PENDING;
802
803 dev_kfree_skb(priv->beacon_skb);
804 priv->beacon_skb = NULL;
805 }
806
807 /*****************************************************************************
808 *
809 * Workqueue callbacks
810 *
811 *****************************************************************************/
812
813 static void iwl_bg_run_time_calib_work(struct work_struct *work)
814 {
815 struct iwl_priv *priv = container_of(work, struct iwl_priv,
816 run_time_calib_work);
817
818 mutex_lock(&priv->shrd->mutex);
819
820 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
821 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
822 mutex_unlock(&priv->shrd->mutex);
823 return;
824 }
825
826 if (priv->start_calib) {
827 iwl_chain_noise_calibration(priv);
828 iwl_sensitivity_calibration(priv);
829 }
830
831 mutex_unlock(&priv->shrd->mutex);
832 }
833
834 void iwlagn_prepare_restart(struct iwl_priv *priv)
835 {
836 struct iwl_rxon_context *ctx;
837 bool bt_full_concurrent;
838 u8 bt_ci_compliance;
839 u8 bt_load;
840 u8 bt_status;
841 bool bt_is_sco;
842
843 lockdep_assert_held(&priv->shrd->mutex);
844
845 for_each_context(priv, ctx)
846 ctx->vif = NULL;
847 priv->is_open = 0;
848
849 /*
850 * __iwl_down() will clear the BT status variables,
851 * which is correct, but when we restart we really
852 * want to keep them so restore them afterwards.
853 *
854 * The restart process will later pick them up and
855 * re-configure the hw when we reconfigure the BT
856 * command.
857 */
858 bt_full_concurrent = priv->bt_full_concurrent;
859 bt_ci_compliance = priv->bt_ci_compliance;
860 bt_load = priv->bt_traffic_load;
861 bt_status = priv->bt_status;
862 bt_is_sco = priv->bt_is_sco;
863
864 iwl_down(priv);
865
866 priv->bt_full_concurrent = bt_full_concurrent;
867 priv->bt_ci_compliance = bt_ci_compliance;
868 priv->bt_traffic_load = bt_load;
869 priv->bt_status = bt_status;
870 priv->bt_is_sco = bt_is_sco;
871 }
872
873 static void iwl_bg_restart(struct work_struct *data)
874 {
875 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
876
877 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
878 return;
879
880 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
881 mutex_lock(&priv->shrd->mutex);
882 iwlagn_prepare_restart(priv);
883 mutex_unlock(&priv->shrd->mutex);
884 iwl_cancel_deferred_work(priv);
885 ieee80211_restart_hw(priv->hw);
886 } else {
887 WARN_ON(1);
888 }
889 }
890
891
892
893
894 void iwlagn_disable_roc(struct iwl_priv *priv)
895 {
896 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
897
898 lockdep_assert_held(&priv->shrd->mutex);
899
900 if (!priv->hw_roc_setup)
901 return;
902
903 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
904 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
905
906 priv->hw_roc_channel = NULL;
907
908 memset(ctx->staging.node_addr, 0, ETH_ALEN);
909
910 iwlagn_commit_rxon(priv, ctx);
911
912 ctx->is_active = false;
913 priv->hw_roc_setup = false;
914 }
915
916 static void iwlagn_disable_roc_work(struct work_struct *work)
917 {
918 struct iwl_priv *priv = container_of(work, struct iwl_priv,
919 hw_roc_disable_work.work);
920
921 mutex_lock(&priv->shrd->mutex);
922 iwlagn_disable_roc(priv);
923 mutex_unlock(&priv->shrd->mutex);
924 }
925
926 /*****************************************************************************
927 *
928 * driver setup and teardown
929 *
930 *****************************************************************************/
931
932 static void iwl_setup_deferred_work(struct iwl_priv *priv)
933 {
934 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
935
936 init_waitqueue_head(&priv->shrd->wait_command_queue);
937
938 INIT_WORK(&priv->restart, iwl_bg_restart);
939 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
940 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
941 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
942 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
943 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
944 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
945 iwlagn_disable_roc_work);
946
947 iwl_setup_scan_deferred_work(priv);
948
949 if (cfg(priv)->lib->bt_setup_deferred_work)
950 cfg(priv)->lib->bt_setup_deferred_work(priv);
951
952 init_timer(&priv->statistics_periodic);
953 priv->statistics_periodic.data = (unsigned long)priv;
954 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
955
956 init_timer(&priv->ucode_trace);
957 priv->ucode_trace.data = (unsigned long)priv;
958 priv->ucode_trace.function = iwl_bg_ucode_trace;
959
960 init_timer(&priv->watchdog);
961 priv->watchdog.data = (unsigned long)priv;
962 priv->watchdog.function = iwl_bg_watchdog;
963 }
964
965 void iwl_cancel_deferred_work(struct iwl_priv *priv)
966 {
967 if (cfg(priv)->lib->cancel_deferred_work)
968 cfg(priv)->lib->cancel_deferred_work(priv);
969
970 cancel_work_sync(&priv->run_time_calib_work);
971 cancel_work_sync(&priv->beacon_update);
972
973 iwl_cancel_scan_deferred_work(priv);
974
975 cancel_work_sync(&priv->bt_full_concurrency);
976 cancel_work_sync(&priv->bt_runtime_config);
977 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
978
979 del_timer_sync(&priv->statistics_periodic);
980 del_timer_sync(&priv->ucode_trace);
981 }
982
983 static void iwl_init_hw_rates(struct iwl_priv *priv,
984 struct ieee80211_rate *rates)
985 {
986 int i;
987
988 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
989 rates[i].bitrate = iwl_rates[i].ieee * 5;
990 rates[i].hw_value = i; /* Rate scaling will work on indexes */
991 rates[i].hw_value_short = i;
992 rates[i].flags = 0;
993 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
994 /*
995 * If CCK != 1M then set short preamble rate flag.
996 */
997 rates[i].flags |=
998 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
999 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1000 }
1001 }
1002 }
1003
1004 static int iwl_init_drv(struct iwl_priv *priv)
1005 {
1006 int ret;
1007
1008 spin_lock_init(&priv->shrd->sta_lock);
1009
1010 mutex_init(&priv->shrd->mutex);
1011
1012 INIT_LIST_HEAD(&trans(priv)->calib_results);
1013
1014 priv->ieee_channels = NULL;
1015 priv->ieee_rates = NULL;
1016 priv->band = IEEE80211_BAND_2GHZ;
1017
1018 priv->iw_mode = NL80211_IFTYPE_STATION;
1019 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1020 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1021 priv->agg_tids_count = 0;
1022
1023 /* initialize force reset */
1024 priv->force_reset[IWL_RF_RESET].reset_duration =
1025 IWL_DELAY_NEXT_FORCE_RF_RESET;
1026 priv->force_reset[IWL_FW_RESET].reset_duration =
1027 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1028
1029 priv->rx_statistics_jiffies = jiffies;
1030
1031 /* Choose which receivers/antennas to use */
1032 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1033
1034 iwl_init_scan_params(priv);
1035
1036 /* init bt coex */
1037 if (cfg(priv)->bt_params &&
1038 cfg(priv)->bt_params->advanced_bt_coexist) {
1039 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1040 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1041 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1042 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1043 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1044 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1045 }
1046
1047 ret = iwl_init_channel_map(priv);
1048 if (ret) {
1049 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1050 goto err;
1051 }
1052
1053 ret = iwl_init_geos(priv);
1054 if (ret) {
1055 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1056 goto err_free_channel_map;
1057 }
1058 iwl_init_hw_rates(priv, priv->ieee_rates);
1059
1060 return 0;
1061
1062 err_free_channel_map:
1063 iwl_free_channel_map(priv);
1064 err:
1065 return ret;
1066 }
1067
1068 static void iwl_uninit_drv(struct iwl_priv *priv)
1069 {
1070 iwl_free_geos(priv);
1071 iwl_free_channel_map(priv);
1072 if (priv->tx_cmd_pool)
1073 kmem_cache_destroy(priv->tx_cmd_pool);
1074 kfree(priv->scan_cmd);
1075 kfree(priv->beacon_cmd);
1076 kfree(rcu_dereference_raw(priv->noa_data));
1077 #ifdef CONFIG_IWLWIFI_DEBUGFS
1078 kfree(priv->wowlan_sram);
1079 #endif
1080 }
1081
1082 /* Size of one Rx buffer in host DRAM */
1083 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1084 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1085
1086 static void iwl_set_hw_params(struct iwl_priv *priv)
1087 {
1088 if (iwlagn_mod_params.amsdu_size_8K)
1089 hw_params(priv).rx_page_order =
1090 get_order(IWL_RX_BUF_SIZE_8K);
1091 else
1092 hw_params(priv).rx_page_order =
1093 get_order(IWL_RX_BUF_SIZE_4K);
1094
1095 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1096 cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1097
1098 hw_params(priv).num_ampdu_queues =
1099 cfg(priv)->base_params->num_of_ampdu_queues;
1100 hw_params(priv).shadow_reg_enable =
1101 cfg(priv)->base_params->shadow_reg_enable;
1102 hw_params(priv).sku = cfg(priv)->sku;
1103 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1104
1105 /* Device-specific setup */
1106 cfg(priv)->lib->set_hw_params(priv);
1107 }
1108
1109
1110
1111 static void iwl_debug_config(struct iwl_priv *priv)
1112 {
1113 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1114 #ifdef CONFIG_IWLWIFI_DEBUG
1115 "enabled\n");
1116 #else
1117 "disabled\n");
1118 #endif
1119 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1120 #ifdef CONFIG_IWLWIFI_DEBUGFS
1121 "enabled\n");
1122 #else
1123 "disabled\n");
1124 #endif
1125 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1126 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1127 "enabled\n");
1128 #else
1129 "disabled\n");
1130 #endif
1131
1132 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1133 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1134 "enabled\n");
1135 #else
1136 "disabled\n");
1137 #endif
1138 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1139 #ifdef CONFIG_IWLWIFI_P2P
1140 "enabled\n");
1141 #else
1142 "disabled\n");
1143 #endif
1144 }
1145
1146 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans)
1147 {
1148 struct iwl_fw *fw = &nic(trans)->fw;
1149 int err = 0;
1150 struct iwl_priv *priv;
1151 struct ieee80211_hw *hw;
1152 struct iwl_op_mode *op_mode;
1153 u16 num_mac;
1154 u32 ucode_flags;
1155
1156 /************************
1157 * 1. Allocating HW data
1158 ************************/
1159 hw = iwl_alloc_all();
1160 if (!hw) {
1161 pr_err("%s: Cannot allocate network device\n",
1162 cfg(trans)->name);
1163 err = -ENOMEM;
1164 goto out;
1165 }
1166
1167 op_mode = hw->priv;
1168 op_mode->ops = &iwl_dvm_ops;
1169 priv = IWL_OP_MODE_GET_DVM(op_mode);
1170 priv->shrd = trans->shrd;
1171 priv->shrd->priv = priv;
1172
1173 /* At this point both hw and priv are allocated. */
1174
1175 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1176
1177 /* show what debugging capabilities we have */
1178 iwl_debug_config(priv);
1179
1180 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1181
1182 /* is antenna coupling more than 35dB ? */
1183 priv->bt_ant_couple_ok =
1184 (iwlagn_mod_params.ant_coupling >
1185 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1186 true : false;
1187
1188 /* enable/disable bt channel inhibition */
1189 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1190 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1191 (priv->bt_ch_announce) ? "On" : "Off");
1192
1193 if (iwl_alloc_traffic_mem(priv))
1194 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1195
1196 /* these spin locks will be used in apm_ops.init and EEPROM access
1197 * we should init now
1198 */
1199 spin_lock_init(&trans(priv)->reg_lock);
1200 spin_lock_init(&priv->shrd->lock);
1201
1202 /***********************
1203 * 3. Read REV register
1204 ***********************/
1205 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1206 cfg(priv)->name, trans(priv)->hw_rev);
1207
1208 err = iwl_trans_start_hw(trans(priv));
1209 if (err)
1210 goto out_free_traffic_mem;
1211
1212 /*****************
1213 * 4. Read EEPROM
1214 *****************/
1215 /* Read the EEPROM */
1216 err = iwl_eeprom_init(priv, trans(priv)->hw_rev);
1217 /* Reset chip to save power until we load uCode during "up". */
1218 iwl_trans_stop_hw(trans(priv));
1219 if (err) {
1220 IWL_ERR(priv, "Unable to init EEPROM\n");
1221 goto out_free_traffic_mem;
1222 }
1223 err = iwl_eeprom_check_version(priv);
1224 if (err)
1225 goto out_free_eeprom;
1226
1227 err = iwl_eeprom_check_sku(priv);
1228 if (err)
1229 goto out_free_eeprom;
1230
1231 /* extract MAC Address */
1232 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1233 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1234 priv->hw->wiphy->addresses = priv->addresses;
1235 priv->hw->wiphy->n_addresses = 1;
1236 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1237 if (num_mac > 1) {
1238 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1239 ETH_ALEN);
1240 priv->addresses[1].addr[5]++;
1241 priv->hw->wiphy->n_addresses++;
1242 }
1243
1244 /************************
1245 * 5. Setup HW constants
1246 ************************/
1247 iwl_set_hw_params(priv);
1248
1249 ucode_flags = fw->ucode_capa.flags;
1250
1251 #ifndef CONFIG_IWLWIFI_P2P
1252 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1253 #endif
1254 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1255 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1256
1257 /*
1258 * if not PAN, then don't support P2P -- might be a uCode
1259 * packaging bug or due to the eeprom check above
1260 */
1261 if (!(ucode_flags & IWL_UCODE_TLV_FLAGS_PAN))
1262 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1263
1264
1265 /*******************
1266 * 6. Setup priv
1267 *******************/
1268
1269 err = iwl_init_drv(priv);
1270 if (err)
1271 goto out_free_eeprom;
1272 /* At this point both hw and priv are initialized. */
1273
1274 /********************
1275 * 7. Setup services
1276 ********************/
1277 iwl_setup_deferred_work(priv);
1278 iwl_setup_rx_handlers(priv);
1279 iwl_testmode_init(priv);
1280
1281 iwl_power_initialize(priv);
1282 iwl_tt_initialize(priv);
1283
1284 snprintf(priv->hw->wiphy->fw_version,
1285 sizeof(priv->hw->wiphy->fw_version),
1286 "%s", fw->fw_version);
1287
1288 priv->new_scan_threshold_behaviour =
1289 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1290
1291 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1292 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1293 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1294 } else {
1295 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1296 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1297 }
1298
1299 priv->phy_calib_chain_noise_reset_cmd =
1300 fw->ucode_capa.standard_phy_calibration_size;
1301 priv->phy_calib_chain_noise_gain_cmd =
1302 fw->ucode_capa.standard_phy_calibration_size + 1;
1303
1304 /* initialize all valid contexts */
1305 iwl_init_context(priv, ucode_flags);
1306
1307 /**************************************************
1308 * This is still part of probe() in a sense...
1309 *
1310 * 9. Setup and register with mac80211 and debugfs
1311 **************************************************/
1312 err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
1313 if (err)
1314 goto out_destroy_workqueue;
1315
1316 err = iwl_dbgfs_register(priv, DRV_NAME);
1317 if (err)
1318 IWL_ERR(priv,
1319 "failed to create debugfs files. Ignoring error: %d\n",
1320 err);
1321
1322 return op_mode;
1323
1324 out_destroy_workqueue:
1325 destroy_workqueue(priv->workqueue);
1326 priv->workqueue = NULL;
1327 iwl_uninit_drv(priv);
1328 out_free_eeprom:
1329 iwl_eeprom_free(priv->shrd);
1330 out_free_traffic_mem:
1331 iwl_free_traffic_mem(priv);
1332 ieee80211_free_hw(priv->hw);
1333 out:
1334 op_mode = NULL;
1335 return op_mode;
1336 }
1337
1338 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1339 {
1340 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1341
1342 wait_for_completion(&nic(priv)->request_firmware_complete);
1343
1344 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1345
1346 iwl_dbgfs_unregister(priv);
1347
1348 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1349 * to be called and iwl_down since we are removing the device
1350 * we need to set STATUS_EXIT_PENDING bit.
1351 */
1352 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1353
1354 iwl_testmode_cleanup(priv);
1355 iwlagn_mac_unregister(priv);
1356
1357 iwl_tt_exit(priv);
1358
1359 /*This will stop the queues, move the device to low power state */
1360 iwl_trans_stop_device(trans(priv));
1361
1362 iwl_dealloc_ucode(nic(priv));
1363
1364 iwl_eeprom_free(priv->shrd);
1365
1366 /*netif_stop_queue(dev); */
1367 flush_workqueue(priv->workqueue);
1368
1369 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1370 * priv->workqueue... so we can't take down the workqueue
1371 * until now... */
1372 destroy_workqueue(priv->workqueue);
1373 priv->workqueue = NULL;
1374 iwl_free_traffic_mem(priv);
1375
1376 iwl_uninit_drv(priv);
1377
1378 dev_kfree_skb(priv->beacon_skb);
1379
1380 ieee80211_free_hw(priv->hw);
1381 }
1382
1383 const struct iwl_op_mode_ops iwl_dvm_ops = {
1384 .start = iwl_op_mode_dvm_start,
1385 .stop = iwl_op_mode_dvm_stop,
1386 };
1387
1388 /*****************************************************************************
1389 *
1390 * driver and module entry point
1391 *
1392 *****************************************************************************/
1393 static int __init iwl_init(void)
1394 {
1395
1396 int ret;
1397 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1398 pr_info(DRV_COPYRIGHT "\n");
1399
1400 ret = iwlagn_rate_control_register();
1401 if (ret) {
1402 pr_err("Unable to register rate control algorithm: %d\n", ret);
1403 return ret;
1404 }
1405
1406 ret = iwl_pci_register_driver();
1407
1408 if (ret)
1409 goto error_register;
1410 return ret;
1411
1412 error_register:
1413 iwlagn_rate_control_unregister();
1414 return ret;
1415 }
1416
1417 static void __exit iwl_exit(void)
1418 {
1419 iwl_pci_unregister_driver();
1420 iwlagn_rate_control_unregister();
1421 }
1422
1423 module_exit(iwl_exit);
1424 module_init(iwl_init);
1425
1426 #ifdef CONFIG_IWLWIFI_DEBUG
1427 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1428 S_IRUGO | S_IWUSR);
1429 MODULE_PARM_DESC(debug, "debug output mask");
1430 #endif
1431
1432 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1433 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1434 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1435 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1436 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1437 MODULE_PARM_DESC(11n_disable,
1438 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1439 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1440 int, S_IRUGO);
1441 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1442 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
1443 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1444
1445 module_param_named(ucode_alternative,
1446 iwlagn_mod_params.wanted_ucode_alternative,
1447 int, S_IRUGO);
1448 MODULE_PARM_DESC(ucode_alternative,
1449 "specify ucode alternative to use from ucode file");
1450
1451 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
1452 int, S_IRUGO);
1453 MODULE_PARM_DESC(antenna_coupling,
1454 "specify antenna coupling in dB (defualt: 0 dB)");
1455
1456 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
1457 bool, S_IRUGO);
1458 MODULE_PARM_DESC(bt_ch_inhibition,
1459 "Enable BT channel inhibition (default: enable)");
1460
1461 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
1462 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1463
1464 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
1465 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1466
1467 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1468 MODULE_PARM_DESC(wd_disable,
1469 "Disable stuck queue watchdog timer 0=system default, "
1470 "1=disable, 2=enable (default: 0)");
1471
1472 /*
1473 * set bt_coex_active to true, uCode will do kill/defer
1474 * every time the priority line is asserted (BT is sending signals on the
1475 * priority line in the PCIx).
1476 * set bt_coex_active to false, uCode will ignore the BT activity and
1477 * perform the normal operation
1478 *
1479 * User might experience transmit issue on some platform due to WiFi/BT
1480 * co-exist problem. The possible behaviors are:
1481 * Able to scan and finding all the available AP
1482 * Not able to associate with any AP
1483 * On those platforms, WiFi communication can be restored by set
1484 * "bt_coex_active" module parameter to "false"
1485 *
1486 * default: bt_coex_active = true (BT_COEX_ENABLE)
1487 */
1488 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
1489 bool, S_IRUGO);
1490 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1491
1492 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
1493 MODULE_PARM_DESC(led_mode, "0=system default, "
1494 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1495
1496 module_param_named(power_save, iwlagn_mod_params.power_save,
1497 bool, S_IRUGO);
1498 MODULE_PARM_DESC(power_save,
1499 "enable WiFi power management (default: disable)");
1500
1501 module_param_named(power_level, iwlagn_mod_params.power_level,
1502 int, S_IRUGO);
1503 MODULE_PARM_DESC(power_level,
1504 "default power save level (range from 1 - 5, default: 1)");
1505
1506 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
1507 bool, S_IRUGO);
1508 MODULE_PARM_DESC(auto_agg,
1509 "enable agg w/o check traffic load (default: enable)");
1510
1511 /*
1512 * For now, keep using power level 1 instead of automatically
1513 * adjusting ...
1514 */
1515 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
1516 bool, S_IRUGO);
1517 MODULE_PARM_DESC(no_sleep_autoadjust,
1518 "don't automatically adjust sleep level "
1519 "according to maximum network latency (default: true)");
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