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347613049141f67338d9f97833a0684d7783d95e
[GitHub/mt8127/android_kernel_alcatel_ttab.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-eeprom.h"
45 #include "iwl-dev.h"
46 #include "iwl-core.h"
47 #include "iwl-io.h"
48 #include "iwl-agn-calib.h"
49 #include "iwl-agn.h"
50 #include "iwl-shared.h"
51 #include "iwl-trans.h"
52 #include "iwl-op-mode.h"
53
54 /******************************************************************************
55 *
56 * module boiler plate
57 *
58 ******************************************************************************/
59
60 /*
61 * module name, copyright, version, etc.
62 */
63 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
64
65 #ifdef CONFIG_IWLWIFI_DEBUG
66 #define VD "d"
67 #else
68 #define VD
69 #endif
70
71 #define DRV_VERSION IWLWIFI_VERSION VD
72
73
74 MODULE_DESCRIPTION(DRV_DESCRIPTION);
75 MODULE_VERSION(DRV_VERSION);
76 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
77 MODULE_LICENSE("GPL");
78 MODULE_ALIAS("iwlagn");
79
80 void iwl_update_chain_flags(struct iwl_priv *priv)
81 {
82 struct iwl_rxon_context *ctx;
83
84 for_each_context(priv, ctx) {
85 iwlagn_set_rxon_chain(priv, ctx);
86 if (ctx->active.rx_chain != ctx->staging.rx_chain)
87 iwlagn_commit_rxon(priv, ctx);
88 }
89 }
90
91 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
92 static void iwl_set_beacon_tim(struct iwl_priv *priv,
93 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
94 u8 *beacon, u32 frame_size)
95 {
96 u16 tim_idx;
97 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
98
99 /*
100 * The index is relative to frame start but we start looking at the
101 * variable-length part of the beacon.
102 */
103 tim_idx = mgmt->u.beacon.variable - beacon;
104
105 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
106 while ((tim_idx < (frame_size - 2)) &&
107 (beacon[tim_idx] != WLAN_EID_TIM))
108 tim_idx += beacon[tim_idx+1] + 2;
109
110 /* If TIM field was found, set variables */
111 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
112 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
113 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
114 } else
115 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
116 }
117
118 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
119 {
120 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
121 struct iwl_host_cmd cmd = {
122 .id = REPLY_TX_BEACON,
123 .flags = CMD_SYNC,
124 };
125 struct ieee80211_tx_info *info;
126 u32 frame_size;
127 u32 rate_flags;
128 u32 rate;
129
130 /*
131 * We have to set up the TX command, the TX Beacon command, and the
132 * beacon contents.
133 */
134
135 lockdep_assert_held(&priv->mutex);
136
137 if (!priv->beacon_ctx) {
138 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
139 return 0;
140 }
141
142 if (WARN_ON(!priv->beacon_skb))
143 return -EINVAL;
144
145 /* Allocate beacon command */
146 if (!priv->beacon_cmd)
147 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
148 tx_beacon_cmd = priv->beacon_cmd;
149 if (!tx_beacon_cmd)
150 return -ENOMEM;
151
152 frame_size = priv->beacon_skb->len;
153
154 /* Set up TX command fields */
155 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
156 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
157 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
158 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
159 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
160
161 /* Set up TX beacon command fields */
162 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
163 frame_size);
164
165 /* Set up packet rate and flags */
166 info = IEEE80211_SKB_CB(priv->beacon_skb);
167
168 /*
169 * Let's set up the rate at least somewhat correctly;
170 * it will currently not actually be used by the uCode,
171 * it uses the broadcast station's rate instead.
172 */
173 if (info->control.rates[0].idx < 0 ||
174 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
175 rate = 0;
176 else
177 rate = info->control.rates[0].idx;
178
179 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
180 hw_params(priv).valid_tx_ant);
181 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
182
183 /* In mac80211, rates for 5 GHz start at 0 */
184 if (info->band == IEEE80211_BAND_5GHZ)
185 rate += IWL_FIRST_OFDM_RATE;
186 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
187 rate_flags |= RATE_MCS_CCK_MSK;
188
189 tx_beacon_cmd->tx.rate_n_flags =
190 iwl_hw_set_rate_n_flags(rate, rate_flags);
191
192 /* Submit command */
193 cmd.len[0] = sizeof(*tx_beacon_cmd);
194 cmd.data[0] = tx_beacon_cmd;
195 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
196 cmd.len[1] = frame_size;
197 cmd.data[1] = priv->beacon_skb->data;
198 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
199
200 return iwl_dvm_send_cmd(priv, &cmd);
201 }
202
203 static void iwl_bg_beacon_update(struct work_struct *work)
204 {
205 struct iwl_priv *priv =
206 container_of(work, struct iwl_priv, beacon_update);
207 struct sk_buff *beacon;
208
209 mutex_lock(&priv->mutex);
210 if (!priv->beacon_ctx) {
211 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
212 goto out;
213 }
214
215 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
216 /*
217 * The ucode will send beacon notifications even in
218 * IBSS mode, but we don't want to process them. But
219 * we need to defer the type check to here due to
220 * requiring locking around the beacon_ctx access.
221 */
222 goto out;
223 }
224
225 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
226 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
227 if (!beacon) {
228 IWL_ERR(priv, "update beacon failed -- keeping old\n");
229 goto out;
230 }
231
232 /* new beacon skb is allocated every time; dispose previous.*/
233 dev_kfree_skb(priv->beacon_skb);
234
235 priv->beacon_skb = beacon;
236
237 iwlagn_send_beacon_cmd(priv);
238 out:
239 mutex_unlock(&priv->mutex);
240 }
241
242 static void iwl_bg_bt_runtime_config(struct work_struct *work)
243 {
244 struct iwl_priv *priv =
245 container_of(work, struct iwl_priv, bt_runtime_config);
246
247 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
248 return;
249
250 /* dont send host command if rf-kill is on */
251 if (!iwl_is_ready_rf(priv))
252 return;
253 iwlagn_send_advance_bt_config(priv);
254 }
255
256 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
257 {
258 struct iwl_priv *priv =
259 container_of(work, struct iwl_priv, bt_full_concurrency);
260 struct iwl_rxon_context *ctx;
261
262 mutex_lock(&priv->mutex);
263
264 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
265 goto out;
266
267 /* dont send host command if rf-kill is on */
268 if (!iwl_is_ready_rf(priv))
269 goto out;
270
271 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
272 priv->bt_full_concurrent ?
273 "full concurrency" : "3-wire");
274
275 /*
276 * LQ & RXON updated cmds must be sent before BT Config cmd
277 * to avoid 3-wire collisions
278 */
279 for_each_context(priv, ctx) {
280 iwlagn_set_rxon_chain(priv, ctx);
281 iwlagn_commit_rxon(priv, ctx);
282 }
283
284 iwlagn_send_advance_bt_config(priv);
285 out:
286 mutex_unlock(&priv->mutex);
287 }
288
289 /**
290 * iwl_bg_statistics_periodic - Timer callback to queue statistics
291 *
292 * This callback is provided in order to send a statistics request.
293 *
294 * This timer function is continually reset to execute within
295 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
296 * was received. We need to ensure we receive the statistics in order
297 * to update the temperature used for calibrating the TXPOWER.
298 */
299 static void iwl_bg_statistics_periodic(unsigned long data)
300 {
301 struct iwl_priv *priv = (struct iwl_priv *)data;
302
303 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
304 return;
305
306 /* dont send host command if rf-kill is on */
307 if (!iwl_is_ready_rf(priv))
308 return;
309
310 iwl_send_statistics_request(priv, CMD_ASYNC, false);
311 }
312
313
314 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
315 u32 start_idx, u32 num_events,
316 u32 capacity, u32 mode)
317 {
318 u32 i;
319 u32 ptr; /* SRAM byte address of log data */
320 u32 ev, time, data; /* event log data */
321 unsigned long reg_flags;
322
323 if (mode == 0)
324 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
325 else
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
327
328 /* Make sure device is powered up for SRAM reads */
329 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
330 if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
331 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
332 return;
333 }
334
335 /* Set starting address; reads will auto-increment */
336 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
337
338 /*
339 * Refuse to read more than would have fit into the log from
340 * the current start_idx. This used to happen due to the race
341 * described below, but now WARN because the code below should
342 * prevent it from happening here.
343 */
344 if (WARN_ON(num_events > capacity - start_idx))
345 num_events = capacity - start_idx;
346
347 /*
348 * "time" is actually "data" for mode 0 (no timestamp).
349 * place event id # at far right for easier visual parsing.
350 */
351 for (i = 0; i < num_events; i++) {
352 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
353 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
354 if (mode == 0) {
355 trace_iwlwifi_dev_ucode_cont_event(
356 trans(priv)->dev, 0, time, ev);
357 } else {
358 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
359 trace_iwlwifi_dev_ucode_cont_event(
360 trans(priv)->dev, time, data, ev);
361 }
362 }
363 /* Allow device to power down */
364 iwl_release_nic_access(trans(priv));
365 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
366 }
367
368 static void iwl_continuous_event_trace(struct iwl_priv *priv)
369 {
370 u32 capacity; /* event log capacity in # entries */
371 struct {
372 u32 capacity;
373 u32 mode;
374 u32 wrap_counter;
375 u32 write_counter;
376 } __packed read;
377 u32 base; /* SRAM byte address of event log header */
378 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
379 u32 num_wraps; /* # times uCode wrapped to top of log */
380 u32 next_entry; /* index of next entry to be written by uCode */
381
382 base = priv->device_pointers.log_event_table;
383 if (iwlagn_hw_valid_rtc_data_addr(base)) {
384 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
385
386 capacity = read.capacity;
387 mode = read.mode;
388 num_wraps = read.wrap_counter;
389 next_entry = read.write_counter;
390 } else
391 return;
392
393 /*
394 * Unfortunately, the uCode doesn't use temporary variables.
395 * Therefore, it can happen that we read next_entry == capacity,
396 * which really means next_entry == 0.
397 */
398 if (unlikely(next_entry == capacity))
399 next_entry = 0;
400 /*
401 * Additionally, the uCode increases the write pointer before
402 * the wraps counter, so if the write pointer is smaller than
403 * the old write pointer (wrap occurred) but we read that no
404 * wrap occurred, we actually read between the next_entry and
405 * num_wraps update (this does happen in practice!!) -- take
406 * that into account by increasing num_wraps.
407 */
408 if (unlikely(next_entry < priv->event_log.next_entry &&
409 num_wraps == priv->event_log.num_wraps))
410 num_wraps++;
411
412 if (num_wraps == priv->event_log.num_wraps) {
413 iwl_print_cont_event_trace(
414 priv, base, priv->event_log.next_entry,
415 next_entry - priv->event_log.next_entry,
416 capacity, mode);
417
418 priv->event_log.non_wraps_count++;
419 } else {
420 if (num_wraps - priv->event_log.num_wraps > 1)
421 priv->event_log.wraps_more_count++;
422 else
423 priv->event_log.wraps_once_count++;
424
425 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
426 num_wraps - priv->event_log.num_wraps,
427 next_entry, priv->event_log.next_entry);
428
429 if (next_entry < priv->event_log.next_entry) {
430 iwl_print_cont_event_trace(
431 priv, base, priv->event_log.next_entry,
432 capacity - priv->event_log.next_entry,
433 capacity, mode);
434
435 iwl_print_cont_event_trace(
436 priv, base, 0, next_entry, capacity, mode);
437 } else {
438 iwl_print_cont_event_trace(
439 priv, base, next_entry,
440 capacity - next_entry,
441 capacity, mode);
442
443 iwl_print_cont_event_trace(
444 priv, base, 0, next_entry, capacity, mode);
445 }
446 }
447
448 priv->event_log.num_wraps = num_wraps;
449 priv->event_log.next_entry = next_entry;
450 }
451
452 /**
453 * iwl_bg_ucode_trace - Timer callback to log ucode event
454 *
455 * The timer is continually set to execute every
456 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
457 * this function is to perform continuous uCode event logging operation
458 * if enabled
459 */
460 static void iwl_bg_ucode_trace(unsigned long data)
461 {
462 struct iwl_priv *priv = (struct iwl_priv *)data;
463
464 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
465 return;
466
467 if (priv->event_log.ucode_trace) {
468 iwl_continuous_event_trace(priv);
469 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
470 mod_timer(&priv->ucode_trace,
471 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
472 }
473 }
474
475 static void iwl_bg_tx_flush(struct work_struct *work)
476 {
477 struct iwl_priv *priv =
478 container_of(work, struct iwl_priv, tx_flush);
479
480 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
481 return;
482
483 /* do nothing if rf-kill is on */
484 if (!iwl_is_ready_rf(priv))
485 return;
486
487 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
488 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
489 }
490
491 /*
492 * queue/FIFO/AC mapping definitions
493 */
494
495 #define IWL_TX_FIFO_BK 0 /* shared */
496 #define IWL_TX_FIFO_BE 1
497 #define IWL_TX_FIFO_VI 2 /* shared */
498 #define IWL_TX_FIFO_VO 3
499 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
500 #define IWL_TX_FIFO_BE_IPAN 4
501 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
502 #define IWL_TX_FIFO_VO_IPAN 5
503 /* re-uses the VO FIFO, uCode will properly flush/schedule */
504 #define IWL_TX_FIFO_AUX 5
505 #define IWL_TX_FIFO_UNUSED -1
506
507 #define IWLAGN_CMD_FIFO_NUM 7
508
509 /*
510 * This queue number is required for proper operation
511 * because the ucode will stop/start the scheduler as
512 * required.
513 */
514 #define IWL_IPAN_MCAST_QUEUE 8
515
516 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
517 IWL_TX_FIFO_VO,
518 IWL_TX_FIFO_VI,
519 IWL_TX_FIFO_BE,
520 IWL_TX_FIFO_BK,
521 IWLAGN_CMD_FIFO_NUM,
522 };
523
524 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
525 IWL_TX_FIFO_VO,
526 IWL_TX_FIFO_VI,
527 IWL_TX_FIFO_BE,
528 IWL_TX_FIFO_BK,
529 IWL_TX_FIFO_BK_IPAN,
530 IWL_TX_FIFO_BE_IPAN,
531 IWL_TX_FIFO_VI_IPAN,
532 IWL_TX_FIFO_VO_IPAN,
533 IWL_TX_FIFO_BE_IPAN,
534 IWLAGN_CMD_FIFO_NUM,
535 IWL_TX_FIFO_AUX,
536 };
537
538 static const u8 iwlagn_bss_ac_to_fifo[] = {
539 IWL_TX_FIFO_VO,
540 IWL_TX_FIFO_VI,
541 IWL_TX_FIFO_BE,
542 IWL_TX_FIFO_BK,
543 };
544
545 static const u8 iwlagn_bss_ac_to_queue[] = {
546 0, 1, 2, 3,
547 };
548
549 static const u8 iwlagn_pan_ac_to_fifo[] = {
550 IWL_TX_FIFO_VO_IPAN,
551 IWL_TX_FIFO_VI_IPAN,
552 IWL_TX_FIFO_BE_IPAN,
553 IWL_TX_FIFO_BK_IPAN,
554 };
555
556 static const u8 iwlagn_pan_ac_to_queue[] = {
557 7, 6, 5, 4,
558 };
559
560 static const u8 iwlagn_bss_queue_to_ac[] = {
561 IEEE80211_AC_VO,
562 IEEE80211_AC_VI,
563 IEEE80211_AC_BE,
564 IEEE80211_AC_BK,
565 };
566
567 static const u8 iwlagn_pan_queue_to_ac[] = {
568 IEEE80211_AC_VO,
569 IEEE80211_AC_VI,
570 IEEE80211_AC_BE,
571 IEEE80211_AC_BK,
572 IEEE80211_AC_BK,
573 IEEE80211_AC_BE,
574 IEEE80211_AC_VI,
575 IEEE80211_AC_VO,
576 };
577
578 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
579 {
580 int i;
581
582 /*
583 * The default context is always valid,
584 * the PAN context depends on uCode.
585 */
586 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
587 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
588 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
589
590 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
591 priv->contexts[i].ctxid = i;
592
593 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
594 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
595 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
596 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
597 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
598 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
599 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
600 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
601 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
602 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
603 BIT(NL80211_IFTYPE_ADHOC);
604 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
605 BIT(NL80211_IFTYPE_STATION);
606 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
607 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
608 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
609 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
610 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
611 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
612 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
613 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
614
615 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
616 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
617 REPLY_WIPAN_RXON_TIMING;
618 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
619 REPLY_WIPAN_RXON_ASSOC;
620 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
621 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
622 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
623 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
624 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
625 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
626 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
627
628 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
629 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
630 BIT(NL80211_IFTYPE_P2P_CLIENT) |
631 BIT(NL80211_IFTYPE_P2P_GO);
632
633 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
634 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
635 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
636 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
637 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
638 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
639 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
640 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
641
642 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
643 }
644
645 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
646 {
647 struct iwl_ct_kill_config cmd;
648 struct iwl_ct_kill_throttling_config adv_cmd;
649 int ret = 0;
650
651 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
652 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
653
654 priv->thermal_throttle.ct_kill_toggle = false;
655
656 if (cfg(priv)->base_params->support_ct_kill_exit) {
657 adv_cmd.critical_temperature_enter =
658 cpu_to_le32(hw_params(priv).ct_kill_threshold);
659 adv_cmd.critical_temperature_exit =
660 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
661
662 ret = iwl_dvm_send_cmd_pdu(priv,
663 REPLY_CT_KILL_CONFIG_CMD,
664 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
665 if (ret)
666 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
667 else
668 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
669 "succeeded, critical temperature enter is %d,"
670 "exit is %d\n",
671 hw_params(priv).ct_kill_threshold,
672 hw_params(priv).ct_kill_exit_threshold);
673 } else {
674 cmd.critical_temperature_R =
675 cpu_to_le32(hw_params(priv).ct_kill_threshold);
676
677 ret = iwl_dvm_send_cmd_pdu(priv,
678 REPLY_CT_KILL_CONFIG_CMD,
679 CMD_SYNC, sizeof(cmd), &cmd);
680 if (ret)
681 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
682 else
683 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
684 "succeeded, "
685 "critical temperature is %d\n",
686 hw_params(priv).ct_kill_threshold);
687 }
688 }
689
690 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
691 {
692 struct iwl_calib_cfg_cmd calib_cfg_cmd;
693 struct iwl_host_cmd cmd = {
694 .id = CALIBRATION_CFG_CMD,
695 .len = { sizeof(struct iwl_calib_cfg_cmd), },
696 .data = { &calib_cfg_cmd, },
697 };
698
699 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
700 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
701 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
702
703 return iwl_dvm_send_cmd(priv, &cmd);
704 }
705
706
707 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
708 {
709 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
710 .valid = cpu_to_le32(valid_tx_ant),
711 };
712
713 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
714 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
715 return iwl_dvm_send_cmd_pdu(priv,
716 TX_ANT_CONFIGURATION_CMD,
717 CMD_SYNC,
718 sizeof(struct iwl_tx_ant_config_cmd),
719 &tx_ant_cmd);
720 } else {
721 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
722 return -EOPNOTSUPP;
723 }
724 }
725
726 /**
727 * iwl_alive_start - called after REPLY_ALIVE notification received
728 * from protocol/runtime uCode (initialization uCode's
729 * Alive gets handled by iwl_init_alive_start()).
730 */
731 int iwl_alive_start(struct iwl_priv *priv)
732 {
733 int ret = 0;
734 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
735
736 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
737
738 /* After the ALIVE response, we can send host commands to the uCode */
739 set_bit(STATUS_ALIVE, &priv->status);
740
741 /* Enable watchdog to monitor the driver tx queues */
742 iwl_setup_watchdog(priv);
743
744 if (iwl_is_rfkill(priv))
745 return -ERFKILL;
746
747 if (priv->event_log.ucode_trace) {
748 /* start collecting data now */
749 mod_timer(&priv->ucode_trace, jiffies);
750 }
751
752 /* download priority table before any calibration request */
753 if (cfg(priv)->bt_params &&
754 cfg(priv)->bt_params->advanced_bt_coexist) {
755 /* Configure Bluetooth device coexistence support */
756 if (cfg(priv)->bt_params->bt_sco_disable)
757 priv->bt_enable_pspoll = false;
758 else
759 priv->bt_enable_pspoll = true;
760
761 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
762 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
763 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
764 iwlagn_send_advance_bt_config(priv);
765 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
766 priv->cur_rssi_ctx = NULL;
767
768 iwl_send_prio_tbl(priv);
769
770 /* FIXME: w/a to force change uCode BT state machine */
771 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
772 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
773 if (ret)
774 return ret;
775 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
776 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
777 if (ret)
778 return ret;
779 } else {
780 /*
781 * default is 2-wire BT coexexistence support
782 */
783 iwl_send_bt_config(priv);
784 }
785
786 /*
787 * Perform runtime calibrations, including DC calibration.
788 */
789 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
790
791 ieee80211_wake_queues(priv->hw);
792
793 priv->active_rate = IWL_RATES_MASK;
794
795 /* Configure Tx antenna selection based on H/W config */
796 iwlagn_send_tx_ant_config(priv, hw_params(priv).valid_tx_ant);
797
798 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
799 struct iwl_rxon_cmd *active_rxon =
800 (struct iwl_rxon_cmd *)&ctx->active;
801 /* apply any changes in staging */
802 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
803 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
804 } else {
805 struct iwl_rxon_context *tmp;
806 /* Initialize our rx_config data */
807 for_each_context(priv, tmp)
808 iwl_connection_init_rx_config(priv, tmp);
809
810 iwlagn_set_rxon_chain(priv, ctx);
811 }
812
813 if (!priv->wowlan) {
814 /* WoWLAN ucode will not reply in the same way, skip it */
815 iwl_reset_run_time_calib(priv);
816 }
817
818 set_bit(STATUS_READY, &priv->status);
819
820 /* Configure the adapter for unassociated operation */
821 ret = iwlagn_commit_rxon(priv, ctx);
822 if (ret)
823 return ret;
824
825 /* At this point, the NIC is initialized and operational */
826 iwl_rf_kill_ct_config(priv);
827
828 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
829
830 return iwl_power_update_mode(priv, true);
831 }
832
833 /**
834 * iwl_clear_driver_stations - clear knowledge of all stations from driver
835 * @priv: iwl priv struct
836 *
837 * This is called during iwl_down() to make sure that in the case
838 * we're coming there from a hardware restart mac80211 will be
839 * able to reconfigure stations -- if we're getting there in the
840 * normal down flow then the stations will already be cleared.
841 */
842 static void iwl_clear_driver_stations(struct iwl_priv *priv)
843 {
844 struct iwl_rxon_context *ctx;
845
846 spin_lock_bh(&priv->sta_lock);
847 memset(priv->stations, 0, sizeof(priv->stations));
848 priv->num_stations = 0;
849
850 priv->ucode_key_table = 0;
851
852 for_each_context(priv, ctx) {
853 /*
854 * Remove all key information that is not stored as part
855 * of station information since mac80211 may not have had
856 * a chance to remove all the keys. When device is
857 * reconfigured by mac80211 after an error all keys will
858 * be reconfigured.
859 */
860 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
861 ctx->key_mapping_keys = 0;
862 }
863
864 spin_unlock_bh(&priv->sta_lock);
865 }
866
867 void iwl_down(struct iwl_priv *priv)
868 {
869 int exit_pending;
870
871 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
872
873 lockdep_assert_held(&priv->mutex);
874
875 iwl_scan_cancel_timeout(priv, 200);
876
877 /*
878 * If active, scanning won't cancel it, so say it expired.
879 * No race since we hold the mutex here and a new one
880 * can't come in at this time.
881 */
882 ieee80211_remain_on_channel_expired(priv->hw);
883
884 exit_pending =
885 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
886
887 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
888 * to prevent rearm timer */
889 del_timer_sync(&priv->watchdog);
890
891 iwl_clear_ucode_stations(priv, NULL);
892 iwl_dealloc_bcast_stations(priv);
893 iwl_clear_driver_stations(priv);
894
895 /* reset BT coex data */
896 priv->bt_status = 0;
897 priv->cur_rssi_ctx = NULL;
898 priv->bt_is_sco = 0;
899 if (cfg(priv)->bt_params)
900 priv->bt_traffic_load =
901 cfg(priv)->bt_params->bt_init_traffic_load;
902 else
903 priv->bt_traffic_load = 0;
904 priv->bt_full_concurrent = false;
905 priv->bt_ci_compliance = 0;
906
907 /* Wipe out the EXIT_PENDING status bit if we are not actually
908 * exiting the module */
909 if (!exit_pending)
910 clear_bit(STATUS_EXIT_PENDING, &priv->status);
911
912 if (priv->mac80211_registered)
913 ieee80211_stop_queues(priv->hw);
914
915 priv->ucode_loaded = false;
916 iwl_trans_stop_device(trans(priv));
917
918 /* Clear out all status bits but a few that are stable across reset */
919 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
920 STATUS_RF_KILL_HW |
921 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
922 STATUS_GEO_CONFIGURED |
923 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
924 STATUS_EXIT_PENDING;
925 priv->shrd->status &=
926 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
927 STATUS_FW_ERROR;
928
929 dev_kfree_skb(priv->beacon_skb);
930 priv->beacon_skb = NULL;
931 }
932
933 /*****************************************************************************
934 *
935 * Workqueue callbacks
936 *
937 *****************************************************************************/
938
939 static void iwl_bg_run_time_calib_work(struct work_struct *work)
940 {
941 struct iwl_priv *priv = container_of(work, struct iwl_priv,
942 run_time_calib_work);
943
944 mutex_lock(&priv->mutex);
945
946 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
947 test_bit(STATUS_SCANNING, &priv->status)) {
948 mutex_unlock(&priv->mutex);
949 return;
950 }
951
952 if (priv->start_calib) {
953 iwl_chain_noise_calibration(priv);
954 iwl_sensitivity_calibration(priv);
955 }
956
957 mutex_unlock(&priv->mutex);
958 }
959
960 void iwlagn_prepare_restart(struct iwl_priv *priv)
961 {
962 struct iwl_rxon_context *ctx;
963 bool bt_full_concurrent;
964 u8 bt_ci_compliance;
965 u8 bt_load;
966 u8 bt_status;
967 bool bt_is_sco;
968 int i;
969
970 lockdep_assert_held(&priv->mutex);
971
972 for_each_context(priv, ctx)
973 ctx->vif = NULL;
974 priv->is_open = 0;
975
976 /*
977 * __iwl_down() will clear the BT status variables,
978 * which is correct, but when we restart we really
979 * want to keep them so restore them afterwards.
980 *
981 * The restart process will later pick them up and
982 * re-configure the hw when we reconfigure the BT
983 * command.
984 */
985 bt_full_concurrent = priv->bt_full_concurrent;
986 bt_ci_compliance = priv->bt_ci_compliance;
987 bt_load = priv->bt_traffic_load;
988 bt_status = priv->bt_status;
989 bt_is_sco = priv->bt_is_sco;
990
991 iwl_down(priv);
992
993 priv->bt_full_concurrent = bt_full_concurrent;
994 priv->bt_ci_compliance = bt_ci_compliance;
995 priv->bt_traffic_load = bt_load;
996 priv->bt_status = bt_status;
997 priv->bt_is_sco = bt_is_sco;
998
999 /* reset all queues */
1000 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1001 atomic_set(&priv->ac_stop_count[i], 0);
1002
1003 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1004 priv->queue_to_ac[i] = IWL_INVALID_AC;
1005
1006 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1007 }
1008
1009 static void iwl_bg_restart(struct work_struct *data)
1010 {
1011 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1012
1013 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1014 return;
1015
1016 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1017 mutex_lock(&priv->mutex);
1018 iwlagn_prepare_restart(priv);
1019 mutex_unlock(&priv->mutex);
1020 iwl_cancel_deferred_work(priv);
1021 ieee80211_restart_hw(priv->hw);
1022 } else {
1023 WARN_ON(1);
1024 }
1025 }
1026
1027
1028
1029
1030 void iwlagn_disable_roc(struct iwl_priv *priv)
1031 {
1032 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1033
1034 lockdep_assert_held(&priv->mutex);
1035
1036 if (!priv->hw_roc_setup)
1037 return;
1038
1039 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1040 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1041
1042 priv->hw_roc_channel = NULL;
1043
1044 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1045
1046 iwlagn_commit_rxon(priv, ctx);
1047
1048 ctx->is_active = false;
1049 priv->hw_roc_setup = false;
1050 }
1051
1052 static void iwlagn_disable_roc_work(struct work_struct *work)
1053 {
1054 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1055 hw_roc_disable_work.work);
1056
1057 mutex_lock(&priv->mutex);
1058 iwlagn_disable_roc(priv);
1059 mutex_unlock(&priv->mutex);
1060 }
1061
1062 /*****************************************************************************
1063 *
1064 * driver setup and teardown
1065 *
1066 *****************************************************************************/
1067
1068 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1069 {
1070 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1071
1072 INIT_WORK(&priv->restart, iwl_bg_restart);
1073 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1074 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1075 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1076 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1077 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1078 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1079 iwlagn_disable_roc_work);
1080
1081 iwl_setup_scan_deferred_work(priv);
1082
1083 if (cfg(priv)->bt_params)
1084 iwlagn_bt_setup_deferred_work(priv);
1085
1086 init_timer(&priv->statistics_periodic);
1087 priv->statistics_periodic.data = (unsigned long)priv;
1088 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1089
1090 init_timer(&priv->ucode_trace);
1091 priv->ucode_trace.data = (unsigned long)priv;
1092 priv->ucode_trace.function = iwl_bg_ucode_trace;
1093
1094 init_timer(&priv->watchdog);
1095 priv->watchdog.data = (unsigned long)priv;
1096 priv->watchdog.function = iwl_bg_watchdog;
1097 }
1098
1099 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1100 {
1101 if (cfg(priv)->bt_params)
1102 iwlagn_bt_cancel_deferred_work(priv);
1103
1104 cancel_work_sync(&priv->run_time_calib_work);
1105 cancel_work_sync(&priv->beacon_update);
1106
1107 iwl_cancel_scan_deferred_work(priv);
1108
1109 cancel_work_sync(&priv->bt_full_concurrency);
1110 cancel_work_sync(&priv->bt_runtime_config);
1111 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1112
1113 del_timer_sync(&priv->statistics_periodic);
1114 del_timer_sync(&priv->ucode_trace);
1115 }
1116
1117 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1118 {
1119 int i;
1120
1121 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1122 rates[i].bitrate = iwl_rates[i].ieee * 5;
1123 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1124 rates[i].hw_value_short = i;
1125 rates[i].flags = 0;
1126 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1127 /*
1128 * If CCK != 1M then set short preamble rate flag.
1129 */
1130 rates[i].flags |=
1131 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1132 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1133 }
1134 }
1135 }
1136
1137 static int iwl_init_drv(struct iwl_priv *priv)
1138 {
1139 int ret;
1140
1141 spin_lock_init(&priv->sta_lock);
1142
1143 mutex_init(&priv->mutex);
1144
1145 INIT_LIST_HEAD(&priv->calib_results);
1146
1147 priv->ieee_channels = NULL;
1148 priv->ieee_rates = NULL;
1149 priv->band = IEEE80211_BAND_2GHZ;
1150
1151 priv->plcp_delta_threshold =
1152 cfg(priv)->base_params->plcp_delta_threshold;
1153
1154 priv->iw_mode = NL80211_IFTYPE_STATION;
1155 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1156 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1157 priv->agg_tids_count = 0;
1158
1159 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1160
1161 /* initialize force reset */
1162 priv->force_reset[IWL_RF_RESET].reset_duration =
1163 IWL_DELAY_NEXT_FORCE_RF_RESET;
1164 priv->force_reset[IWL_FW_RESET].reset_duration =
1165 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1166
1167 priv->rx_statistics_jiffies = jiffies;
1168
1169 /* Choose which receivers/antennas to use */
1170 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1171
1172 iwl_init_scan_params(priv);
1173
1174 /* init bt coex */
1175 if (cfg(priv)->bt_params &&
1176 cfg(priv)->bt_params->advanced_bt_coexist) {
1177 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1178 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1179 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1180 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1181 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1182 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1183 }
1184
1185 ret = iwl_init_channel_map(priv);
1186 if (ret) {
1187 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1188 goto err;
1189 }
1190
1191 ret = iwl_init_geos(priv);
1192 if (ret) {
1193 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1194 goto err_free_channel_map;
1195 }
1196 iwl_init_hw_rates(priv->ieee_rates);
1197
1198 return 0;
1199
1200 err_free_channel_map:
1201 iwl_free_channel_map(priv);
1202 err:
1203 return ret;
1204 }
1205
1206 static void iwl_uninit_drv(struct iwl_priv *priv)
1207 {
1208 iwl_free_geos(priv);
1209 iwl_free_channel_map(priv);
1210 kfree(priv->scan_cmd);
1211 kfree(priv->beacon_cmd);
1212 kfree(rcu_dereference_raw(priv->noa_data));
1213 iwl_calib_free_results(priv);
1214 #ifdef CONFIG_IWLWIFI_DEBUGFS
1215 kfree(priv->wowlan_sram);
1216 #endif
1217 }
1218
1219 /* Size of one Rx buffer in host DRAM */
1220 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1221 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1222
1223 static void iwl_set_hw_params(struct iwl_priv *priv)
1224 {
1225 if (cfg(priv)->ht_params)
1226 hw_params(priv).use_rts_for_aggregation =
1227 cfg(priv)->ht_params->use_rts_for_aggregation;
1228
1229 if (iwlagn_mod_params.amsdu_size_8K)
1230 hw_params(priv).rx_page_order =
1231 get_order(IWL_RX_BUF_SIZE_8K);
1232 else
1233 hw_params(priv).rx_page_order =
1234 get_order(IWL_RX_BUF_SIZE_4K);
1235
1236 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1237 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1238
1239 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1240
1241 /* Device-specific setup */
1242 cfg(priv)->lib->set_hw_params(priv);
1243 }
1244
1245
1246
1247 static void iwl_debug_config(struct iwl_priv *priv)
1248 {
1249 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1250 #ifdef CONFIG_IWLWIFI_DEBUG
1251 "enabled\n");
1252 #else
1253 "disabled\n");
1254 #endif
1255 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1256 #ifdef CONFIG_IWLWIFI_DEBUGFS
1257 "enabled\n");
1258 #else
1259 "disabled\n");
1260 #endif
1261 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1262 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1263 "enabled\n");
1264 #else
1265 "disabled\n");
1266 #endif
1267
1268 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1269 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1270 "enabled\n");
1271 #else
1272 "disabled\n");
1273 #endif
1274 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1275 #ifdef CONFIG_IWLWIFI_P2P
1276 "enabled\n");
1277 #else
1278 "disabled\n");
1279 #endif
1280 }
1281
1282 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1283 const struct iwl_fw *fw)
1284 {
1285 struct iwl_priv *priv;
1286 struct ieee80211_hw *hw;
1287 struct iwl_op_mode *op_mode;
1288 u16 num_mac;
1289 u32 ucode_flags;
1290 struct iwl_trans_config trans_cfg;
1291 static const u8 no_reclaim_cmds[] = {
1292 REPLY_RX_PHY_CMD,
1293 REPLY_RX,
1294 REPLY_RX_MPDU_CMD,
1295 REPLY_COMPRESSED_BA,
1296 STATISTICS_NOTIFICATION,
1297 REPLY_TX,
1298 };
1299 const u8 *q_to_ac;
1300 int n_q_to_ac;
1301 int i;
1302
1303 /************************
1304 * 1. Allocating HW data
1305 ************************/
1306 hw = iwl_alloc_all();
1307 if (!hw) {
1308 pr_err("%s: Cannot allocate network device\n",
1309 cfg(trans)->name);
1310 goto out;
1311 }
1312
1313 op_mode = hw->priv;
1314 op_mode->ops = &iwl_dvm_ops;
1315 priv = IWL_OP_MODE_GET_DVM(op_mode);
1316 priv->shrd = trans->shrd;
1317 priv->fw = fw;
1318 /* TODO: remove fw from shared data later */
1319 priv->shrd->fw = fw;
1320
1321 /*
1322 * Populate the state variables that the transport layer needs
1323 * to know about.
1324 */
1325 trans_cfg.op_mode = op_mode;
1326 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1327 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1328
1329 ucode_flags = fw->ucode_capa.flags;
1330
1331 #ifndef CONFIG_IWLWIFI_P2P
1332 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1333 #endif
1334
1335 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1336 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1337 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1338 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1339 trans_cfg.n_queue_to_fifo =
1340 ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1341 q_to_ac = iwlagn_pan_queue_to_ac;
1342 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
1343 } else {
1344 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1345 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1346 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1347 trans_cfg.n_queue_to_fifo =
1348 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1349 q_to_ac = iwlagn_bss_queue_to_ac;
1350 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1351 }
1352
1353 /* Configure transport layer */
1354 iwl_trans_configure(trans(priv), &trans_cfg);
1355
1356 /* At this point both hw and priv are allocated. */
1357
1358 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1359
1360 /* show what debugging capabilities we have */
1361 iwl_debug_config(priv);
1362
1363 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1364
1365 /* is antenna coupling more than 35dB ? */
1366 priv->bt_ant_couple_ok =
1367 (iwlagn_mod_params.ant_coupling >
1368 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1369 true : false;
1370
1371 /* enable/disable bt channel inhibition */
1372 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1373 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1374 (priv->bt_ch_announce) ? "On" : "Off");
1375
1376 if (iwl_alloc_traffic_mem(priv))
1377 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1378
1379 /* these spin locks will be used in apm_ops.init and EEPROM access
1380 * we should init now
1381 */
1382 spin_lock_init(&trans(priv)->reg_lock);
1383 spin_lock_init(&priv->statistics.lock);
1384
1385 /***********************
1386 * 2. Read REV register
1387 ***********************/
1388 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1389 cfg(priv)->name, trans(priv)->hw_rev);
1390
1391 if (iwl_trans_start_hw(trans(priv)))
1392 goto out_free_traffic_mem;
1393
1394 /*****************
1395 * 3. Read EEPROM
1396 *****************/
1397 /* Read the EEPROM */
1398 if (iwl_eeprom_init(trans(priv), trans(priv)->hw_rev)) {
1399 IWL_ERR(priv, "Unable to init EEPROM\n");
1400 goto out_free_traffic_mem;
1401 }
1402 /* Reset chip to save power until we load uCode during "up". */
1403 iwl_trans_stop_hw(trans(priv));
1404
1405 if (iwl_eeprom_check_version(priv))
1406 goto out_free_eeprom;
1407
1408 if (iwl_eeprom_init_hw_params(priv))
1409 goto out_free_eeprom;
1410
1411 /* extract MAC Address */
1412 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1413 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1414 priv->hw->wiphy->addresses = priv->addresses;
1415 priv->hw->wiphy->n_addresses = 1;
1416 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1417 if (num_mac > 1) {
1418 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1419 ETH_ALEN);
1420 priv->addresses[1].addr[5]++;
1421 priv->hw->wiphy->n_addresses++;
1422 }
1423
1424 /************************
1425 * 4. Setup HW constants
1426 ************************/
1427 iwl_set_hw_params(priv);
1428
1429 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1430 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1431 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1432 /*
1433 * if not PAN, then don't support P2P -- might be a uCode
1434 * packaging bug or due to the eeprom check above
1435 */
1436 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1437 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1438 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1439 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1440 trans_cfg.n_queue_to_fifo =
1441 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1442 q_to_ac = iwlagn_bss_queue_to_ac;
1443 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1444
1445 /* Configure transport layer again*/
1446 iwl_trans_configure(trans(priv), &trans_cfg);
1447 }
1448
1449 /*******************
1450 * 5. Setup priv
1451 *******************/
1452 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1453 atomic_set(&priv->ac_stop_count[i], 0);
1454
1455 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1456 if (i < n_q_to_ac)
1457 priv->queue_to_ac[i] = q_to_ac[i];
1458 else
1459 priv->queue_to_ac[i] = IWL_INVALID_AC;
1460 }
1461
1462 WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1463 IWLAGN_CMD_FIFO_NUM);
1464
1465 if (iwl_init_drv(priv))
1466 goto out_free_eeprom;
1467
1468 /* At this point both hw and priv are initialized. */
1469
1470 /********************
1471 * 6. Setup services
1472 ********************/
1473 iwl_setup_deferred_work(priv);
1474 iwl_setup_rx_handlers(priv);
1475 iwl_testmode_init(priv);
1476
1477 iwl_power_initialize(priv);
1478 iwl_tt_initialize(priv);
1479
1480 snprintf(priv->hw->wiphy->fw_version,
1481 sizeof(priv->hw->wiphy->fw_version),
1482 "%s", fw->fw_version);
1483
1484 priv->new_scan_threshold_behaviour =
1485 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1486
1487 priv->phy_calib_chain_noise_reset_cmd =
1488 fw->ucode_capa.standard_phy_calibration_size;
1489 priv->phy_calib_chain_noise_gain_cmd =
1490 fw->ucode_capa.standard_phy_calibration_size + 1;
1491
1492 /* initialize all valid contexts */
1493 iwl_init_context(priv, ucode_flags);
1494
1495 /**************************************************
1496 * This is still part of probe() in a sense...
1497 *
1498 * 7. Setup and register with mac80211 and debugfs
1499 **************************************************/
1500 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1501 goto out_destroy_workqueue;
1502
1503 if (iwl_dbgfs_register(priv, DRV_NAME))
1504 IWL_ERR(priv,
1505 "failed to create debugfs files. Ignoring error\n");
1506
1507 return op_mode;
1508
1509 out_destroy_workqueue:
1510 destroy_workqueue(priv->workqueue);
1511 priv->workqueue = NULL;
1512 iwl_uninit_drv(priv);
1513 out_free_eeprom:
1514 iwl_eeprom_free(priv->shrd);
1515 out_free_traffic_mem:
1516 iwl_free_traffic_mem(priv);
1517 ieee80211_free_hw(priv->hw);
1518 out:
1519 op_mode = NULL;
1520 return op_mode;
1521 }
1522
1523 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1524 {
1525 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1526
1527 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1528
1529 iwl_dbgfs_unregister(priv);
1530
1531 iwl_testmode_cleanup(priv);
1532 iwlagn_mac_unregister(priv);
1533
1534 iwl_tt_exit(priv);
1535
1536 /*This will stop the queues, move the device to low power state */
1537 priv->ucode_loaded = false;
1538 iwl_trans_stop_device(trans(priv));
1539
1540 iwl_eeprom_free(priv->shrd);
1541
1542 /*netif_stop_queue(dev); */
1543 flush_workqueue(priv->workqueue);
1544
1545 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1546 * priv->workqueue... so we can't take down the workqueue
1547 * until now... */
1548 destroy_workqueue(priv->workqueue);
1549 priv->workqueue = NULL;
1550 iwl_free_traffic_mem(priv);
1551
1552 iwl_uninit_drv(priv);
1553
1554 dev_kfree_skb(priv->beacon_skb);
1555
1556 ieee80211_free_hw(priv->hw);
1557 }
1558
1559 static const char * const desc_lookup_text[] = {
1560 "OK",
1561 "FAIL",
1562 "BAD_PARAM",
1563 "BAD_CHECKSUM",
1564 "NMI_INTERRUPT_WDG",
1565 "SYSASSERT",
1566 "FATAL_ERROR",
1567 "BAD_COMMAND",
1568 "HW_ERROR_TUNE_LOCK",
1569 "HW_ERROR_TEMPERATURE",
1570 "ILLEGAL_CHAN_FREQ",
1571 "VCC_NOT_STABLE",
1572 "FH_ERROR",
1573 "NMI_INTERRUPT_HOST",
1574 "NMI_INTERRUPT_ACTION_PT",
1575 "NMI_INTERRUPT_UNKNOWN",
1576 "UCODE_VERSION_MISMATCH",
1577 "HW_ERROR_ABS_LOCK",
1578 "HW_ERROR_CAL_LOCK_FAIL",
1579 "NMI_INTERRUPT_INST_ACTION_PT",
1580 "NMI_INTERRUPT_DATA_ACTION_PT",
1581 "NMI_TRM_HW_ER",
1582 "NMI_INTERRUPT_TRM",
1583 "NMI_INTERRUPT_BREAK_POINT",
1584 "DEBUG_0",
1585 "DEBUG_1",
1586 "DEBUG_2",
1587 "DEBUG_3",
1588 };
1589
1590 static struct { char *name; u8 num; } advanced_lookup[] = {
1591 { "NMI_INTERRUPT_WDG", 0x34 },
1592 { "SYSASSERT", 0x35 },
1593 { "UCODE_VERSION_MISMATCH", 0x37 },
1594 { "BAD_COMMAND", 0x38 },
1595 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1596 { "FATAL_ERROR", 0x3D },
1597 { "NMI_TRM_HW_ERR", 0x46 },
1598 { "NMI_INTERRUPT_TRM", 0x4C },
1599 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1600 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1601 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1602 { "NMI_INTERRUPT_HOST", 0x66 },
1603 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1604 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1605 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1606 { "ADVANCED_SYSASSERT", 0 },
1607 };
1608
1609 static const char *desc_lookup(u32 num)
1610 {
1611 int i;
1612 int max = ARRAY_SIZE(desc_lookup_text);
1613
1614 if (num < max)
1615 return desc_lookup_text[num];
1616
1617 max = ARRAY_SIZE(advanced_lookup) - 1;
1618 for (i = 0; i < max; i++) {
1619 if (advanced_lookup[i].num == num)
1620 break;
1621 }
1622 return advanced_lookup[i].name;
1623 }
1624
1625 #define ERROR_START_OFFSET (1 * sizeof(u32))
1626 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1627
1628 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1629 {
1630 struct iwl_trans *trans = trans(priv);
1631 u32 base;
1632 struct iwl_error_event_table table;
1633
1634 base = priv->device_pointers.error_event_table;
1635 if (priv->cur_ucode == IWL_UCODE_INIT) {
1636 if (!base)
1637 base = priv->shrd->fw->init_errlog_ptr;
1638 } else {
1639 if (!base)
1640 base = priv->shrd->fw->inst_errlog_ptr;
1641 }
1642
1643 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1644 IWL_ERR(priv,
1645 "Not valid error log pointer 0x%08X for %s uCode\n",
1646 base,
1647 (priv->cur_ucode == IWL_UCODE_INIT)
1648 ? "Init" : "RT");
1649 return;
1650 }
1651
1652 /*TODO: Update dbgfs with ISR error stats obtained below */
1653 iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1654
1655 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1656 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1657 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1658 priv->shrd->status, table.valid);
1659 }
1660
1661 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1662 table.data1, table.data2, table.line,
1663 table.blink1, table.blink2, table.ilink1,
1664 table.ilink2, table.bcon_time, table.gp1,
1665 table.gp2, table.gp3, table.ucode_ver,
1666 table.hw_ver, table.brd_ver);
1667 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1668 desc_lookup(table.error_id));
1669 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1670 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1671 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1672 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1673 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1674 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1675 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1676 IWL_ERR(priv, "0x%08X | line\n", table.line);
1677 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1678 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1679 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1680 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1681 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1682 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1683 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1684 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1685 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1686 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1687 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1688 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1689 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1690 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1691 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1692 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1693 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1694 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1695 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1696 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1697 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1698 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1699 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1700 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1701 }
1702
1703 #define EVENT_START_OFFSET (4 * sizeof(u32))
1704
1705 /**
1706 * iwl_print_event_log - Dump error event log to syslog
1707 *
1708 */
1709 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1710 u32 num_events, u32 mode,
1711 int pos, char **buf, size_t bufsz)
1712 {
1713 u32 i;
1714 u32 base; /* SRAM byte address of event log header */
1715 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1716 u32 ptr; /* SRAM byte address of log data */
1717 u32 ev, time, data; /* event log data */
1718 unsigned long reg_flags;
1719
1720 struct iwl_trans *trans = trans(priv);
1721
1722 if (num_events == 0)
1723 return pos;
1724
1725 base = priv->device_pointers.log_event_table;
1726 if (priv->cur_ucode == IWL_UCODE_INIT) {
1727 if (!base)
1728 base = priv->shrd->fw->init_evtlog_ptr;
1729 } else {
1730 if (!base)
1731 base = priv->shrd->fw->inst_evtlog_ptr;
1732 }
1733
1734 if (mode == 0)
1735 event_size = 2 * sizeof(u32);
1736 else
1737 event_size = 3 * sizeof(u32);
1738
1739 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1740
1741 /* Make sure device is powered up for SRAM reads */
1742 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1743 if (unlikely(!iwl_grab_nic_access(trans)))
1744 goto out_unlock;
1745
1746 /* Set starting address; reads will auto-increment */
1747 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1748
1749 /* "time" is actually "data" for mode 0 (no timestamp).
1750 * place event id # at far right for easier visual parsing. */
1751 for (i = 0; i < num_events; i++) {
1752 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1753 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1754 if (mode == 0) {
1755 /* data, ev */
1756 if (bufsz) {
1757 pos += scnprintf(*buf + pos, bufsz - pos,
1758 "EVT_LOG:0x%08x:%04u\n",
1759 time, ev);
1760 } else {
1761 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1762 time, ev);
1763 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1764 time, ev);
1765 }
1766 } else {
1767 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1768 if (bufsz) {
1769 pos += scnprintf(*buf + pos, bufsz - pos,
1770 "EVT_LOGT:%010u:0x%08x:%04u\n",
1771 time, data, ev);
1772 } else {
1773 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1774 time, data, ev);
1775 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1776 data, ev);
1777 }
1778 }
1779 }
1780
1781 /* Allow device to power down */
1782 iwl_release_nic_access(trans);
1783 out_unlock:
1784 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1785 return pos;
1786 }
1787
1788 /**
1789 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1790 */
1791 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1792 u32 num_wraps, u32 next_entry,
1793 u32 size, u32 mode,
1794 int pos, char **buf, size_t bufsz)
1795 {
1796 /*
1797 * display the newest DEFAULT_LOG_ENTRIES entries
1798 * i.e the entries just before the next ont that uCode would fill.
1799 */
1800 if (num_wraps) {
1801 if (next_entry < size) {
1802 pos = iwl_print_event_log(priv,
1803 capacity - (size - next_entry),
1804 size - next_entry, mode,
1805 pos, buf, bufsz);
1806 pos = iwl_print_event_log(priv, 0,
1807 next_entry, mode,
1808 pos, buf, bufsz);
1809 } else
1810 pos = iwl_print_event_log(priv, next_entry - size,
1811 size, mode, pos, buf, bufsz);
1812 } else {
1813 if (next_entry < size) {
1814 pos = iwl_print_event_log(priv, 0, next_entry,
1815 mode, pos, buf, bufsz);
1816 } else {
1817 pos = iwl_print_event_log(priv, next_entry - size,
1818 size, mode, pos, buf, bufsz);
1819 }
1820 }
1821 return pos;
1822 }
1823
1824 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1825
1826 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1827 char **buf, bool display)
1828 {
1829 u32 base; /* SRAM byte address of event log header */
1830 u32 capacity; /* event log capacity in # entries */
1831 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1832 u32 num_wraps; /* # times uCode wrapped to top of log */
1833 u32 next_entry; /* index of next entry to be written by uCode */
1834 u32 size; /* # entries that we'll print */
1835 u32 logsize;
1836 int pos = 0;
1837 size_t bufsz = 0;
1838 struct iwl_trans *trans = trans(priv);
1839
1840 base = priv->device_pointers.log_event_table;
1841 if (priv->cur_ucode == IWL_UCODE_INIT) {
1842 logsize = priv->shrd->fw->init_evtlog_size;
1843 if (!base)
1844 base = priv->shrd->fw->init_evtlog_ptr;
1845 } else {
1846 logsize = priv->shrd->fw->inst_evtlog_size;
1847 if (!base)
1848 base = priv->shrd->fw->inst_evtlog_ptr;
1849 }
1850
1851 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1852 IWL_ERR(priv,
1853 "Invalid event log pointer 0x%08X for %s uCode\n",
1854 base,
1855 (priv->cur_ucode == IWL_UCODE_INIT)
1856 ? "Init" : "RT");
1857 return -EINVAL;
1858 }
1859
1860 /* event log header */
1861 capacity = iwl_read_targ_mem(trans, base);
1862 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
1863 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
1864 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
1865
1866 if (capacity > logsize) {
1867 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1868 "entries\n", capacity, logsize);
1869 capacity = logsize;
1870 }
1871
1872 if (next_entry > logsize) {
1873 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1874 next_entry, logsize);
1875 next_entry = logsize;
1876 }
1877
1878 size = num_wraps ? capacity : next_entry;
1879
1880 /* bail out if nothing in log */
1881 if (size == 0) {
1882 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1883 return pos;
1884 }
1885
1886 #ifdef CONFIG_IWLWIFI_DEBUG
1887 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1888 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1889 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1890 #else
1891 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1892 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1893 #endif
1894 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1895 size);
1896
1897 #ifdef CONFIG_IWLWIFI_DEBUG
1898 if (display) {
1899 if (full_log)
1900 bufsz = capacity * 48;
1901 else
1902 bufsz = size * 48;
1903 *buf = kmalloc(bufsz, GFP_KERNEL);
1904 if (!*buf)
1905 return -ENOMEM;
1906 }
1907 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1908 /*
1909 * if uCode has wrapped back to top of log,
1910 * start at the oldest entry,
1911 * i.e the next one that uCode would fill.
1912 */
1913 if (num_wraps)
1914 pos = iwl_print_event_log(priv, next_entry,
1915 capacity - next_entry, mode,
1916 pos, buf, bufsz);
1917 /* (then/else) start at top of log */
1918 pos = iwl_print_event_log(priv, 0,
1919 next_entry, mode, pos, buf, bufsz);
1920 } else
1921 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1922 next_entry, size, mode,
1923 pos, buf, bufsz);
1924 #else
1925 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1926 next_entry, size, mode,
1927 pos, buf, bufsz);
1928 #endif
1929 return pos;
1930 }
1931
1932 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1933 {
1934 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1935
1936 IWL_ERR(priv, "Loaded firmware version: %s\n",
1937 priv->shrd->fw->fw_version);
1938
1939 iwl_dump_nic_error_log(priv);
1940 iwl_dump_nic_event_log(priv, false, NULL, false);
1941
1942 iwlagn_fw_error(priv, false);
1943 }
1944
1945 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1946 {
1947 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1948
1949 if (!iwl_check_for_ct_kill(priv)) {
1950 IWL_ERR(priv, "Restarting adapter queue is full\n");
1951 iwlagn_fw_error(priv, false);
1952 }
1953 }
1954
1955 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1956 {
1957 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1958
1959 cfg(priv)->lib->nic_config(priv);
1960 }
1961
1962 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
1963 {
1964 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1965 int ac = priv->queue_to_ac[queue];
1966
1967 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
1968 return;
1969
1970 if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
1971 IWL_DEBUG_TX_QUEUES(priv,
1972 "queue %d (AC %d) already stopped\n",
1973 queue, ac);
1974 return;
1975 }
1976
1977 set_bit(ac, &priv->transport_queue_stop);
1978 ieee80211_stop_queue(priv->hw, ac);
1979 }
1980
1981 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
1982 {
1983 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1984 int ac = priv->queue_to_ac[queue];
1985
1986 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
1987 return;
1988
1989 if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
1990 IWL_DEBUG_TX_QUEUES(priv,
1991 "queue %d (AC %d) already awake\n",
1992 queue, ac);
1993 return;
1994 }
1995
1996 clear_bit(ac, &priv->transport_queue_stop);
1997
1998 if (!priv->passive_no_rx)
1999 ieee80211_wake_queue(priv->hw, ac);
2000 }
2001
2002 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2003 {
2004 int ac;
2005
2006 if (!priv->passive_no_rx)
2007 return;
2008
2009 for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
2010 if (!test_bit(ac, &priv->transport_queue_stop)) {
2011 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
2012 ieee80211_wake_queue(priv->hw, ac);
2013 } else {
2014 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2015 }
2016 }
2017
2018 priv->passive_no_rx = false;
2019 }
2020
2021 const struct iwl_op_mode_ops iwl_dvm_ops = {
2022 .start = iwl_op_mode_dvm_start,
2023 .stop = iwl_op_mode_dvm_stop,
2024 .rx = iwl_rx_dispatch,
2025 .queue_full = iwl_stop_sw_queue,
2026 .queue_not_full = iwl_wake_sw_queue,
2027 .hw_rf_kill = iwl_set_hw_rfkill_state,
2028 .free_skb = iwl_free_skb,
2029 .nic_error = iwl_nic_error,
2030 .cmd_queue_full = iwl_cmd_queue_full,
2031 .nic_config = iwl_nic_config,
2032 };
2033
2034 /*****************************************************************************
2035 *
2036 * driver and module entry point
2037 *
2038 *****************************************************************************/
2039
2040 struct kmem_cache *iwl_tx_cmd_pool;
2041
2042 static int __init iwl_init(void)
2043 {
2044
2045 int ret;
2046 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2047 pr_info(DRV_COPYRIGHT "\n");
2048
2049 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2050 sizeof(struct iwl_device_cmd),
2051 sizeof(void *), 0, NULL);
2052 if (!iwl_tx_cmd_pool)
2053 return -ENOMEM;
2054
2055 ret = iwlagn_rate_control_register();
2056 if (ret) {
2057 pr_err("Unable to register rate control algorithm: %d\n", ret);
2058 goto error_rc_register;
2059 }
2060
2061 ret = iwl_pci_register_driver();
2062 if (ret)
2063 goto error_pci_register;
2064 return ret;
2065
2066 error_pci_register:
2067 iwlagn_rate_control_unregister();
2068 error_rc_register:
2069 kmem_cache_destroy(iwl_tx_cmd_pool);
2070 return ret;
2071 }
2072
2073 static void __exit iwl_exit(void)
2074 {
2075 iwl_pci_unregister_driver();
2076 iwlagn_rate_control_unregister();
2077 kmem_cache_destroy(iwl_tx_cmd_pool);
2078 }
2079
2080 module_exit(iwl_exit);
2081 module_init(iwl_init);
2082
2083 #ifdef CONFIG_IWLWIFI_DEBUG
2084 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2085 S_IRUGO | S_IWUSR);
2086 MODULE_PARM_DESC(debug, "debug output mask");
2087 #endif
2088
2089 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2090 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2091 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2092 MODULE_PARM_DESC(11n_disable,
2093 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
2094 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2095 int, S_IRUGO);
2096 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2097 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2098 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2099
2100 module_param_named(ucode_alternative,
2101 iwlagn_mod_params.wanted_ucode_alternative,
2102 int, S_IRUGO);
2103 MODULE_PARM_DESC(ucode_alternative,
2104 "specify ucode alternative to use from ucode file");
2105
2106 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2107 int, S_IRUGO);
2108 MODULE_PARM_DESC(antenna_coupling,
2109 "specify antenna coupling in dB (defualt: 0 dB)");
2110
2111 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2112 bool, S_IRUGO);
2113 MODULE_PARM_DESC(bt_ch_inhibition,
2114 "Enable BT channel inhibition (default: enable)");
2115
2116 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2117 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2118
2119 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2120 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2121
2122 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2123 MODULE_PARM_DESC(wd_disable,
2124 "Disable stuck queue watchdog timer 0=system default, "
2125 "1=disable, 2=enable (default: 0)");
2126
2127 /*
2128 * set bt_coex_active to true, uCode will do kill/defer
2129 * every time the priority line is asserted (BT is sending signals on the
2130 * priority line in the PCIx).
2131 * set bt_coex_active to false, uCode will ignore the BT activity and
2132 * perform the normal operation
2133 *
2134 * User might experience transmit issue on some platform due to WiFi/BT
2135 * co-exist problem. The possible behaviors are:
2136 * Able to scan and finding all the available AP
2137 * Not able to associate with any AP
2138 * On those platforms, WiFi communication can be restored by set
2139 * "bt_coex_active" module parameter to "false"
2140 *
2141 * default: bt_coex_active = true (BT_COEX_ENABLE)
2142 */
2143 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2144 bool, S_IRUGO);
2145 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2146
2147 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2148 MODULE_PARM_DESC(led_mode, "0=system default, "
2149 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
2150
2151 module_param_named(power_save, iwlagn_mod_params.power_save,
2152 bool, S_IRUGO);
2153 MODULE_PARM_DESC(power_save,
2154 "enable WiFi power management (default: disable)");
2155
2156 module_param_named(power_level, iwlagn_mod_params.power_level,
2157 int, S_IRUGO);
2158 MODULE_PARM_DESC(power_level,
2159 "default power save level (range from 1 - 5, default: 1)");
2160
2161 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2162 bool, S_IRUGO);
2163 MODULE_PARM_DESC(auto_agg,
2164 "enable agg w/o check traffic load (default: enable)");
2165
2166 /*
2167 * For now, keep using power level 1 instead of automatically
2168 * adjusting ...
2169 */
2170 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2171 bool, S_IRUGO);
2172 MODULE_PARM_DESC(no_sleep_autoadjust,
2173 "don't automatically adjust sleep level "
2174 "according to maximum network latency (default: true)");
kernel source for telekom puls (alcatel/mediatek)