1 // SPDX-License-Identifier: GPL-2.0-only
2 /******************************************************************************
3 *
4 * Copyright(c) 2003 - 2014, 2018 - 2021 Intel Corporation. All rights reserved.
5 * Copyright(c) 2015 Intel Deutschland GmbH
6 *
7 * Portions of this file are derived from the ipw3945 project, as well
8 * as portions of the ieee80211 subsystem header files.
9 *****************************************************************************/
10
11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
12
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/slab.h>
17 #include <linux/delay.h>
18 #include <linux/sched.h>
19 #include <linux/skbuff.h>
20 #include <linux/netdevice.h>
21 #include <linux/etherdevice.h>
22 #include <linux/if_arp.h>
23
24 #include <net/mac80211.h>
25
26 #include <asm/div64.h>
27
28 #include "iwl-eeprom-read.h"
29 #include "iwl-eeprom-parse.h"
30 #include "iwl-io.h"
31 #include "iwl-trans.h"
32 #include "iwl-op-mode.h"
33 #include "iwl-drv.h"
34 #include "iwl-modparams.h"
35 #include "iwl-prph.h"
36
37 #include "dev.h"
38 #include "calib.h"
39 #include "agn.h"
40
41
42 /******************************************************************************
43 *
44 * module boiler plate
45 *
46 ******************************************************************************/
47
48 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
49 MODULE_DESCRIPTION(DRV_DESCRIPTION);
50 MODULE_LICENSE("GPL");
51
52 /* Please keep this array *SORTED* by hex value.
53 * Access is done through binary search.
54 * A warning will be triggered on violation.
55 */
56 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = {
57 HCMD_NAME(REPLY_ALIVE),
58 HCMD_NAME(REPLY_ERROR),
59 HCMD_NAME(REPLY_ECHO),
60 HCMD_NAME(REPLY_RXON),
61 HCMD_NAME(REPLY_RXON_ASSOC),
62 HCMD_NAME(REPLY_QOS_PARAM),
63 HCMD_NAME(REPLY_RXON_TIMING),
64 HCMD_NAME(REPLY_ADD_STA),
65 HCMD_NAME(REPLY_REMOVE_STA),
66 HCMD_NAME(REPLY_REMOVE_ALL_STA),
67 HCMD_NAME(REPLY_TX),
68 HCMD_NAME(REPLY_TXFIFO_FLUSH),
69 HCMD_NAME(REPLY_WEPKEY),
70 HCMD_NAME(REPLY_LEDS_CMD),
71 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD),
72 HCMD_NAME(COEX_PRIORITY_TABLE_CMD),
73 HCMD_NAME(COEX_MEDIUM_NOTIFICATION),
74 HCMD_NAME(COEX_EVENT_CMD),
75 HCMD_NAME(TEMPERATURE_NOTIFICATION),
76 HCMD_NAME(CALIBRATION_CFG_CMD),
77 HCMD_NAME(CALIBRATION_RES_NOTIFICATION),
78 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION),
79 HCMD_NAME(REPLY_QUIET_CMD),
80 HCMD_NAME(REPLY_CHANNEL_SWITCH),
81 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION),
82 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD),
83 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION),
84 HCMD_NAME(POWER_TABLE_CMD),
85 HCMD_NAME(PM_SLEEP_NOTIFICATION),
86 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC),
87 HCMD_NAME(REPLY_SCAN_CMD),
88 HCMD_NAME(REPLY_SCAN_ABORT_CMD),
89 HCMD_NAME(SCAN_START_NOTIFICATION),
90 HCMD_NAME(SCAN_RESULTS_NOTIFICATION),
91 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION),
92 HCMD_NAME(BEACON_NOTIFICATION),
93 HCMD_NAME(REPLY_TX_BEACON),
94 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION),
95 HCMD_NAME(REPLY_TX_POWER_DBM_CMD),
96 HCMD_NAME(QUIET_NOTIFICATION),
97 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD),
98 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1),
99 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
100 HCMD_NAME(MEASURE_ABORT_NOTIFICATION),
101 HCMD_NAME(REPLY_BT_CONFIG),
102 HCMD_NAME(REPLY_STATISTICS_CMD),
103 HCMD_NAME(STATISTICS_NOTIFICATION),
104 HCMD_NAME(REPLY_CARD_STATE_CMD),
105 HCMD_NAME(CARD_STATE_NOTIFICATION),
106 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
107 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD),
108 HCMD_NAME(SENSITIVITY_CMD),
109 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD),
110 HCMD_NAME(REPLY_WIPAN_PARAMS),
111 HCMD_NAME(REPLY_WIPAN_RXON),
112 HCMD_NAME(REPLY_WIPAN_RXON_TIMING),
113 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC),
114 HCMD_NAME(REPLY_WIPAN_QOS_PARAM),
115 HCMD_NAME(REPLY_WIPAN_WEPKEY),
116 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH),
117 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION),
118 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE),
119 HCMD_NAME(REPLY_RX_PHY_CMD),
120 HCMD_NAME(REPLY_RX_MPDU_CMD),
121 HCMD_NAME(REPLY_RX),
122 HCMD_NAME(REPLY_COMPRESSED_BA),
123 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE),
124 HCMD_NAME(REPLY_BT_COEX_PROT_ENV),
125 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF),
126 HCMD_NAME(REPLY_D3_CONFIG),
127 HCMD_NAME(REPLY_WOWLAN_PATTERNS),
128 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER),
129 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS),
130 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS),
131 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL),
132 HCMD_NAME(REPLY_WOWLAN_GET_STATUS),
133 };
134
135 static const struct iwl_hcmd_arr iwl_dvm_groups[] = {
136 [0x0] = HCMD_ARR(iwl_dvm_cmd_names),
137 };
138
139 static const struct iwl_op_mode_ops iwl_dvm_ops;
140
iwl_update_chain_flags(struct iwl_priv * priv)141 void iwl_update_chain_flags(struct iwl_priv *priv)
142 {
143 struct iwl_rxon_context *ctx;
144
145 for_each_context(priv, ctx) {
146 iwlagn_set_rxon_chain(priv, ctx);
147 if (ctx->active.rx_chain != ctx->staging.rx_chain)
148 iwlagn_commit_rxon(priv, ctx);
149 }
150 }
151
152 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
iwl_set_beacon_tim(struct iwl_priv * priv,struct iwl_tx_beacon_cmd * tx_beacon_cmd,u8 * beacon,u32 frame_size)153 static void iwl_set_beacon_tim(struct iwl_priv *priv,
154 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
155 u8 *beacon, u32 frame_size)
156 {
157 u16 tim_idx;
158 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
159
160 /*
161 * The index is relative to frame start but we start looking at the
162 * variable-length part of the beacon.
163 */
164 tim_idx = mgmt->u.beacon.variable - beacon;
165
166 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
167 while ((tim_idx < (frame_size - 2)) &&
168 (beacon[tim_idx] != WLAN_EID_TIM))
169 tim_idx += beacon[tim_idx+1] + 2;
170
171 /* If TIM field was found, set variables */
172 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
173 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
174 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
175 } else
176 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
177 }
178
iwlagn_send_beacon_cmd(struct iwl_priv * priv)179 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
180 {
181 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
182 struct iwl_host_cmd cmd = {
183 .id = REPLY_TX_BEACON,
184 };
185 struct ieee80211_tx_info *info;
186 u32 frame_size;
187 u32 rate_flags;
188 u32 rate;
189
190 /*
191 * We have to set up the TX command, the TX Beacon command, and the
192 * beacon contents.
193 */
194
195 lockdep_assert_held(&priv->mutex);
196
197 if (!priv->beacon_ctx) {
198 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
199 return 0;
200 }
201
202 if (WARN_ON(!priv->beacon_skb))
203 return -EINVAL;
204
205 /* Allocate beacon command */
206 if (!priv->beacon_cmd)
207 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
208 tx_beacon_cmd = priv->beacon_cmd;
209 if (!tx_beacon_cmd)
210 return -ENOMEM;
211
212 frame_size = priv->beacon_skb->len;
213
214 /* Set up TX command fields */
215 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
216 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
217 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
218 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
219 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
220
221 /* Set up TX beacon command fields */
222 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
223 frame_size);
224
225 /* Set up packet rate and flags */
226 info = IEEE80211_SKB_CB(priv->beacon_skb);
227
228 /*
229 * Let's set up the rate at least somewhat correctly;
230 * it will currently not actually be used by the uCode,
231 * it uses the broadcast station's rate instead.
232 */
233 if (info->control.rates[0].idx < 0 ||
234 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
235 rate = 0;
236 else
237 rate = info->control.rates[0].idx;
238
239 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
240 priv->nvm_data->valid_tx_ant);
241 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
242
243 /* In mac80211, rates for 5 GHz start at 0 */
244 if (info->band == NL80211_BAND_5GHZ)
245 rate += IWL_FIRST_OFDM_RATE;
246 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
247 rate_flags |= RATE_MCS_CCK_MSK;
248
249 tx_beacon_cmd->tx.rate_n_flags =
250 iwl_hw_set_rate_n_flags(rate, rate_flags);
251
252 /* Submit command */
253 cmd.len[0] = sizeof(*tx_beacon_cmd);
254 cmd.data[0] = tx_beacon_cmd;
255 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
256 cmd.len[1] = frame_size;
257 cmd.data[1] = priv->beacon_skb->data;
258 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
259
260 return iwl_dvm_send_cmd(priv, &cmd);
261 }
262
iwl_bg_beacon_update(struct work_struct * work)263 static void iwl_bg_beacon_update(struct work_struct *work)
264 {
265 struct iwl_priv *priv =
266 container_of(work, struct iwl_priv, beacon_update);
267 struct sk_buff *beacon;
268
269 mutex_lock(&priv->mutex);
270 if (!priv->beacon_ctx) {
271 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
272 goto out;
273 }
274
275 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
276 /*
277 * The ucode will send beacon notifications even in
278 * IBSS mode, but we don't want to process them. But
279 * we need to defer the type check to here due to
280 * requiring locking around the beacon_ctx access.
281 */
282 goto out;
283 }
284
285 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
286 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
287 if (!beacon) {
288 IWL_ERR(priv, "update beacon failed -- keeping old\n");
289 goto out;
290 }
291
292 /* new beacon skb is allocated every time; dispose previous.*/
293 dev_kfree_skb(priv->beacon_skb);
294
295 priv->beacon_skb = beacon;
296
297 iwlagn_send_beacon_cmd(priv);
298 out:
299 mutex_unlock(&priv->mutex);
300 }
301
iwl_bg_bt_runtime_config(struct work_struct * work)302 static void iwl_bg_bt_runtime_config(struct work_struct *work)
303 {
304 struct iwl_priv *priv =
305 container_of(work, struct iwl_priv, bt_runtime_config);
306
307 mutex_lock(&priv->mutex);
308 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
309 goto out;
310
311 /* dont send host command if rf-kill is on */
312 if (!iwl_is_ready_rf(priv))
313 goto out;
314
315 iwlagn_send_advance_bt_config(priv);
316 out:
317 mutex_unlock(&priv->mutex);
318 }
319
iwl_bg_bt_full_concurrency(struct work_struct * work)320 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
321 {
322 struct iwl_priv *priv =
323 container_of(work, struct iwl_priv, bt_full_concurrency);
324 struct iwl_rxon_context *ctx;
325
326 mutex_lock(&priv->mutex);
327
328 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
329 goto out;
330
331 /* dont send host command if rf-kill is on */
332 if (!iwl_is_ready_rf(priv))
333 goto out;
334
335 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
336 priv->bt_full_concurrent ?
337 "full concurrency" : "3-wire");
338
339 /*
340 * LQ & RXON updated cmds must be sent before BT Config cmd
341 * to avoid 3-wire collisions
342 */
343 for_each_context(priv, ctx) {
344 iwlagn_set_rxon_chain(priv, ctx);
345 iwlagn_commit_rxon(priv, ctx);
346 }
347
348 iwlagn_send_advance_bt_config(priv);
349 out:
350 mutex_unlock(&priv->mutex);
351 }
352
iwl_send_statistics_request(struct iwl_priv * priv,u8 flags,bool clear)353 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
354 {
355 struct iwl_statistics_cmd statistics_cmd = {
356 .configuration_flags =
357 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
358 };
359
360 if (flags & CMD_ASYNC)
361 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
362 CMD_ASYNC,
363 sizeof(struct iwl_statistics_cmd),
364 &statistics_cmd);
365 else
366 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
367 sizeof(struct iwl_statistics_cmd),
368 &statistics_cmd);
369 }
370
371 /*
372 * iwl_bg_statistics_periodic - Timer callback to queue statistics
373 *
374 * This callback is provided in order to send a statistics request.
375 *
376 * This timer function is continually reset to execute within
377 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
378 * was received. We need to ensure we receive the statistics in order
379 * to update the temperature used for calibrating the TXPOWER.
380 */
iwl_bg_statistics_periodic(struct timer_list * t)381 static void iwl_bg_statistics_periodic(struct timer_list *t)
382 {
383 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic);
384
385 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
386 return;
387
388 /* dont send host command if rf-kill is on */
389 if (!iwl_is_ready_rf(priv))
390 return;
391
392 iwl_send_statistics_request(priv, CMD_ASYNC, false);
393 }
394
395
iwl_print_cont_event_trace(struct iwl_priv * priv,u32 base,u32 start_idx,u32 num_events,u32 capacity,u32 mode)396 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
397 u32 start_idx, u32 num_events,
398 u32 capacity, u32 mode)
399 {
400 u32 i;
401 u32 ptr; /* SRAM byte address of log data */
402 u32 ev, time, data; /* event log data */
403
404 if (mode == 0)
405 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
406 else
407 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
408
409 /* Make sure device is powered up for SRAM reads */
410 if (!iwl_trans_grab_nic_access(priv->trans))
411 return;
412
413 /* Set starting address; reads will auto-increment */
414 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
415
416 /*
417 * Refuse to read more than would have fit into the log from
418 * the current start_idx. This used to happen due to the race
419 * described below, but now WARN because the code below should
420 * prevent it from happening here.
421 */
422 if (WARN_ON(num_events > capacity - start_idx))
423 num_events = capacity - start_idx;
424
425 /*
426 * "time" is actually "data" for mode 0 (no timestamp).
427 * place event id # at far right for easier visual parsing.
428 */
429 for (i = 0; i < num_events; i++) {
430 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
431 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
432 if (mode == 0) {
433 trace_iwlwifi_dev_ucode_cont_event(
434 priv->trans->dev, 0, time, ev);
435 } else {
436 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
437 trace_iwlwifi_dev_ucode_cont_event(
438 priv->trans->dev, time, data, ev);
439 }
440 }
441 /* Allow device to power down */
442 iwl_trans_release_nic_access(priv->trans);
443 }
444
iwl_continuous_event_trace(struct iwl_priv * priv)445 static void iwl_continuous_event_trace(struct iwl_priv *priv)
446 {
447 u32 capacity; /* event log capacity in # entries */
448 struct {
449 u32 capacity;
450 u32 mode;
451 u32 wrap_counter;
452 u32 write_counter;
453 } __packed read;
454 u32 base; /* SRAM byte address of event log header */
455 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
456 u32 num_wraps; /* # times uCode wrapped to top of log */
457 u32 next_entry; /* index of next entry to be written by uCode */
458
459 base = priv->device_pointers.log_event_table;
460 if (iwlagn_hw_valid_rtc_data_addr(base)) {
461 iwl_trans_read_mem_bytes(priv->trans, base,
462 &read, sizeof(read));
463 capacity = read.capacity;
464 mode = read.mode;
465 num_wraps = read.wrap_counter;
466 next_entry = read.write_counter;
467 } else
468 return;
469
470 /*
471 * Unfortunately, the uCode doesn't use temporary variables.
472 * Therefore, it can happen that we read next_entry == capacity,
473 * which really means next_entry == 0.
474 */
475 if (unlikely(next_entry == capacity))
476 next_entry = 0;
477 /*
478 * Additionally, the uCode increases the write pointer before
479 * the wraps counter, so if the write pointer is smaller than
480 * the old write pointer (wrap occurred) but we read that no
481 * wrap occurred, we actually read between the next_entry and
482 * num_wraps update (this does happen in practice!!) -- take
483 * that into account by increasing num_wraps.
484 */
485 if (unlikely(next_entry < priv->event_log.next_entry &&
486 num_wraps == priv->event_log.num_wraps))
487 num_wraps++;
488
489 if (num_wraps == priv->event_log.num_wraps) {
490 iwl_print_cont_event_trace(
491 priv, base, priv->event_log.next_entry,
492 next_entry - priv->event_log.next_entry,
493 capacity, mode);
494
495 priv->event_log.non_wraps_count++;
496 } else {
497 if (num_wraps - priv->event_log.num_wraps > 1)
498 priv->event_log.wraps_more_count++;
499 else
500 priv->event_log.wraps_once_count++;
501
502 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
503 num_wraps - priv->event_log.num_wraps,
504 next_entry, priv->event_log.next_entry);
505
506 if (next_entry < priv->event_log.next_entry) {
507 iwl_print_cont_event_trace(
508 priv, base, priv->event_log.next_entry,
509 capacity - priv->event_log.next_entry,
510 capacity, mode);
511
512 iwl_print_cont_event_trace(
513 priv, base, 0, next_entry, capacity, mode);
514 } else {
515 iwl_print_cont_event_trace(
516 priv, base, next_entry,
517 capacity - next_entry,
518 capacity, mode);
519
520 iwl_print_cont_event_trace(
521 priv, base, 0, next_entry, capacity, mode);
522 }
523 }
524
525 priv->event_log.num_wraps = num_wraps;
526 priv->event_log.next_entry = next_entry;
527 }
528
529 /*
530 * iwl_bg_ucode_trace - Timer callback to log ucode event
531 *
532 * The timer is continually set to execute every
533 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
534 * this function is to perform continuous uCode event logging operation
535 * if enabled
536 */
iwl_bg_ucode_trace(struct timer_list * t)537 static void iwl_bg_ucode_trace(struct timer_list *t)
538 {
539 struct iwl_priv *priv = from_timer(priv, t, ucode_trace);
540
541 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
542 return;
543
544 if (priv->event_log.ucode_trace) {
545 iwl_continuous_event_trace(priv);
546 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
547 mod_timer(&priv->ucode_trace,
548 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
549 }
550 }
551
iwl_bg_tx_flush(struct work_struct * work)552 static void iwl_bg_tx_flush(struct work_struct *work)
553 {
554 struct iwl_priv *priv =
555 container_of(work, struct iwl_priv, tx_flush);
556
557 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
558 return;
559
560 /* do nothing if rf-kill is on */
561 if (!iwl_is_ready_rf(priv))
562 return;
563
564 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
565 iwlagn_dev_txfifo_flush(priv);
566 }
567
568 /*
569 * queue/FIFO/AC mapping definitions
570 */
571
572 static const u8 iwlagn_bss_ac_to_fifo[] = {
573 IWL_TX_FIFO_VO,
574 IWL_TX_FIFO_VI,
575 IWL_TX_FIFO_BE,
576 IWL_TX_FIFO_BK,
577 };
578
579 static const u8 iwlagn_bss_ac_to_queue[] = {
580 0, 1, 2, 3,
581 };
582
583 static const u8 iwlagn_pan_ac_to_fifo[] = {
584 IWL_TX_FIFO_VO_IPAN,
585 IWL_TX_FIFO_VI_IPAN,
586 IWL_TX_FIFO_BE_IPAN,
587 IWL_TX_FIFO_BK_IPAN,
588 };
589
590 static const u8 iwlagn_pan_ac_to_queue[] = {
591 7, 6, 5, 4,
592 };
593
iwl_init_context(struct iwl_priv * priv,u32 ucode_flags)594 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
595 {
596 int i;
597
598 /*
599 * The default context is always valid,
600 * the PAN context depends on uCode.
601 */
602 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
603 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
604 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
605
606 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
607 priv->contexts[i].ctxid = i;
608
609 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
610 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
611 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
612 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
613 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
614 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
615 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
616 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
617 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
618 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
619 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
620 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
621 BIT(NL80211_IFTYPE_STATION);
622 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
623 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
624 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
625 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
626 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
627 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
628 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
629 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
630
631 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
632 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
633 REPLY_WIPAN_RXON_TIMING;
634 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
635 REPLY_WIPAN_RXON_ASSOC;
636 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
637 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
638 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
639 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
640 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
641 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
642 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
643
644 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
645 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
646 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
647 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
648 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
649 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
650 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
651 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
652
653 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
654 }
655
iwl_rf_kill_ct_config(struct iwl_priv * priv)656 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
657 {
658 struct iwl_ct_kill_config cmd;
659 struct iwl_ct_kill_throttling_config adv_cmd;
660 int ret = 0;
661
662 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
663 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
664
665 priv->thermal_throttle.ct_kill_toggle = false;
666
667 if (priv->lib->support_ct_kill_exit) {
668 adv_cmd.critical_temperature_enter =
669 cpu_to_le32(priv->hw_params.ct_kill_threshold);
670 adv_cmd.critical_temperature_exit =
671 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
672
673 ret = iwl_dvm_send_cmd_pdu(priv,
674 REPLY_CT_KILL_CONFIG_CMD,
675 0, sizeof(adv_cmd), &adv_cmd);
676 if (ret)
677 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
678 else
679 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
680 "succeeded, critical temperature enter is %d,"
681 "exit is %d\n",
682 priv->hw_params.ct_kill_threshold,
683 priv->hw_params.ct_kill_exit_threshold);
684 } else {
685 cmd.critical_temperature_R =
686 cpu_to_le32(priv->hw_params.ct_kill_threshold);
687
688 ret = iwl_dvm_send_cmd_pdu(priv,
689 REPLY_CT_KILL_CONFIG_CMD,
690 0, sizeof(cmd), &cmd);
691 if (ret)
692 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
693 else
694 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
695 "succeeded, "
696 "critical temperature is %d\n",
697 priv->hw_params.ct_kill_threshold);
698 }
699 }
700
iwlagn_send_calib_cfg_rt(struct iwl_priv * priv,u32 cfg)701 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
702 {
703 struct iwl_calib_cfg_cmd calib_cfg_cmd;
704 struct iwl_host_cmd cmd = {
705 .id = CALIBRATION_CFG_CMD,
706 .len = { sizeof(struct iwl_calib_cfg_cmd), },
707 .data = { &calib_cfg_cmd, },
708 };
709
710 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
711 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
712 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
713
714 return iwl_dvm_send_cmd(priv, &cmd);
715 }
716
717
iwlagn_send_tx_ant_config(struct iwl_priv * priv,u8 valid_tx_ant)718 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
719 {
720 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
721 .valid = cpu_to_le32(valid_tx_ant),
722 };
723
724 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
725 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
726 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
727 sizeof(struct iwl_tx_ant_config_cmd),
728 &tx_ant_cmd);
729 } else {
730 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
731 return -EOPNOTSUPP;
732 }
733 }
734
iwl_send_bt_config(struct iwl_priv * priv)735 static void iwl_send_bt_config(struct iwl_priv *priv)
736 {
737 struct iwl_bt_cmd bt_cmd = {
738 .lead_time = BT_LEAD_TIME_DEF,
739 .max_kill = BT_MAX_KILL_DEF,
740 .kill_ack_mask = 0,
741 .kill_cts_mask = 0,
742 };
743
744 if (!iwlwifi_mod_params.bt_coex_active)
745 bt_cmd.flags = BT_COEX_DISABLE;
746 else
747 bt_cmd.flags = BT_COEX_ENABLE;
748
749 priv->bt_enable_flag = bt_cmd.flags;
750 IWL_DEBUG_INFO(priv, "BT coex %s\n",
751 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
752
753 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
754 0, sizeof(struct iwl_bt_cmd), &bt_cmd))
755 IWL_ERR(priv, "failed to send BT Coex Config\n");
756 }
757
758 /*
759 * iwl_alive_start - called after REPLY_ALIVE notification received
760 * from protocol/runtime uCode (initialization uCode's
761 * Alive gets handled by iwl_init_alive_start()).
762 */
iwl_alive_start(struct iwl_priv * priv)763 int iwl_alive_start(struct iwl_priv *priv)
764 {
765 int ret = 0;
766 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
767
768 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
769
770 /* After the ALIVE response, we can send host commands to the uCode */
771 set_bit(STATUS_ALIVE, &priv->status);
772
773 if (iwl_is_rfkill(priv))
774 return -ERFKILL;
775
776 if (priv->event_log.ucode_trace) {
777 /* start collecting data now */
778 mod_timer(&priv->ucode_trace, jiffies);
779 }
780
781 /* download priority table before any calibration request */
782 if (priv->lib->bt_params &&
783 priv->lib->bt_params->advanced_bt_coexist) {
784 /* Configure Bluetooth device coexistence support */
785 if (priv->lib->bt_params->bt_sco_disable)
786 priv->bt_enable_pspoll = false;
787 else
788 priv->bt_enable_pspoll = true;
789
790 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
791 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
792 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
793 iwlagn_send_advance_bt_config(priv);
794 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
795 priv->cur_rssi_ctx = NULL;
796
797 iwl_send_prio_tbl(priv);
798
799 /* FIXME: w/a to force change uCode BT state machine */
800 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
801 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
802 if (ret)
803 return ret;
804 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
805 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
806 if (ret)
807 return ret;
808 } else if (priv->lib->bt_params) {
809 /*
810 * default is 2-wire BT coexexistence support
811 */
812 iwl_send_bt_config(priv);
813 }
814
815 /*
816 * Perform runtime calibrations, including DC calibration.
817 */
818 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
819
820 ieee80211_wake_queues(priv->hw);
821
822 /* Configure Tx antenna selection based on H/W config */
823 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
824
825 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
826 struct iwl_rxon_cmd *active_rxon =
827 (struct iwl_rxon_cmd *)&ctx->active;
828 /* apply any changes in staging */
829 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
830 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
831 } else {
832 struct iwl_rxon_context *tmp;
833 /* Initialize our rx_config data */
834 for_each_context(priv, tmp)
835 iwl_connection_init_rx_config(priv, tmp);
836
837 iwlagn_set_rxon_chain(priv, ctx);
838 }
839
840 if (!priv->wowlan) {
841 /* WoWLAN ucode will not reply in the same way, skip it */
842 iwl_reset_run_time_calib(priv);
843 }
844
845 set_bit(STATUS_READY, &priv->status);
846
847 /* Configure the adapter for unassociated operation */
848 ret = iwlagn_commit_rxon(priv, ctx);
849 if (ret)
850 return ret;
851
852 /* At this point, the NIC is initialized and operational */
853 iwl_rf_kill_ct_config(priv);
854
855 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
856
857 return iwl_power_update_mode(priv, true);
858 }
859
860 /**
861 * iwl_clear_driver_stations - clear knowledge of all stations from driver
862 * @priv: iwl priv struct
863 *
864 * This is called during iwl_down() to make sure that in the case
865 * we're coming there from a hardware restart mac80211 will be
866 * able to reconfigure stations -- if we're getting there in the
867 * normal down flow then the stations will already be cleared.
868 */
iwl_clear_driver_stations(struct iwl_priv * priv)869 static void iwl_clear_driver_stations(struct iwl_priv *priv)
870 {
871 struct iwl_rxon_context *ctx;
872
873 spin_lock_bh(&priv->sta_lock);
874 memset(priv->stations, 0, sizeof(priv->stations));
875 priv->num_stations = 0;
876
877 priv->ucode_key_table = 0;
878
879 for_each_context(priv, ctx) {
880 /*
881 * Remove all key information that is not stored as part
882 * of station information since mac80211 may not have had
883 * a chance to remove all the keys. When device is
884 * reconfigured by mac80211 after an error all keys will
885 * be reconfigured.
886 */
887 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
888 ctx->key_mapping_keys = 0;
889 }
890
891 spin_unlock_bh(&priv->sta_lock);
892 }
893
iwl_down(struct iwl_priv * priv)894 void iwl_down(struct iwl_priv *priv)
895 {
896 int exit_pending;
897
898 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
899
900 lockdep_assert_held(&priv->mutex);
901
902 iwl_scan_cancel_timeout(priv, 200);
903
904 exit_pending =
905 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
906
907 iwl_clear_ucode_stations(priv, NULL);
908 iwl_dealloc_bcast_stations(priv);
909 iwl_clear_driver_stations(priv);
910
911 /* reset BT coex data */
912 priv->bt_status = 0;
913 priv->cur_rssi_ctx = NULL;
914 priv->bt_is_sco = 0;
915 if (priv->lib->bt_params)
916 priv->bt_traffic_load =
917 priv->lib->bt_params->bt_init_traffic_load;
918 else
919 priv->bt_traffic_load = 0;
920 priv->bt_full_concurrent = false;
921 priv->bt_ci_compliance = 0;
922
923 /* Wipe out the EXIT_PENDING status bit if we are not actually
924 * exiting the module */
925 if (!exit_pending)
926 clear_bit(STATUS_EXIT_PENDING, &priv->status);
927
928 if (priv->mac80211_registered)
929 ieee80211_stop_queues(priv->hw);
930
931 priv->ucode_loaded = false;
932 iwl_trans_stop_device(priv->trans);
933
934 /* Set num_aux_in_flight must be done after the transport is stopped */
935 atomic_set(&priv->num_aux_in_flight, 0);
936
937 /* Clear out all status bits but a few that are stable across reset */
938 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
939 STATUS_RF_KILL_HW |
940 test_bit(STATUS_FW_ERROR, &priv->status) <<
941 STATUS_FW_ERROR |
942 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
943 STATUS_EXIT_PENDING;
944
945 dev_kfree_skb(priv->beacon_skb);
946 priv->beacon_skb = NULL;
947 }
948
949 /*****************************************************************************
950 *
951 * Workqueue callbacks
952 *
953 *****************************************************************************/
954
iwl_bg_run_time_calib_work(struct work_struct * work)955 static void iwl_bg_run_time_calib_work(struct work_struct *work)
956 {
957 struct iwl_priv *priv = container_of(work, struct iwl_priv,
958 run_time_calib_work);
959
960 mutex_lock(&priv->mutex);
961
962 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
963 test_bit(STATUS_SCANNING, &priv->status)) {
964 mutex_unlock(&priv->mutex);
965 return;
966 }
967
968 if (priv->start_calib) {
969 iwl_chain_noise_calibration(priv);
970 iwl_sensitivity_calibration(priv);
971 }
972
973 mutex_unlock(&priv->mutex);
974 }
975
iwlagn_prepare_restart(struct iwl_priv * priv)976 void iwlagn_prepare_restart(struct iwl_priv *priv)
977 {
978 bool bt_full_concurrent;
979 u8 bt_ci_compliance;
980 u8 bt_load;
981 u8 bt_status;
982 bool bt_is_sco;
983 int i;
984
985 lockdep_assert_held(&priv->mutex);
986
987 priv->is_open = 0;
988
989 /*
990 * __iwl_down() will clear the BT status variables,
991 * which is correct, but when we restart we really
992 * want to keep them so restore them afterwards.
993 *
994 * The restart process will later pick them up and
995 * re-configure the hw when we reconfigure the BT
996 * command.
997 */
998 bt_full_concurrent = priv->bt_full_concurrent;
999 bt_ci_compliance = priv->bt_ci_compliance;
1000 bt_load = priv->bt_traffic_load;
1001 bt_status = priv->bt_status;
1002 bt_is_sco = priv->bt_is_sco;
1003
1004 iwl_down(priv);
1005
1006 priv->bt_full_concurrent = bt_full_concurrent;
1007 priv->bt_ci_compliance = bt_ci_compliance;
1008 priv->bt_traffic_load = bt_load;
1009 priv->bt_status = bt_status;
1010 priv->bt_is_sco = bt_is_sco;
1011
1012 /* reset aggregation queues */
1013 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1014 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1015 /* and stop counts */
1016 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1017 atomic_set(&priv->queue_stop_count[i], 0);
1018
1019 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1020 }
1021
iwl_bg_restart(struct work_struct * data)1022 static void iwl_bg_restart(struct work_struct *data)
1023 {
1024 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1025
1026 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1027 return;
1028
1029 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1030 mutex_lock(&priv->mutex);
1031 iwlagn_prepare_restart(priv);
1032 mutex_unlock(&priv->mutex);
1033 iwl_cancel_deferred_work(priv);
1034 if (priv->mac80211_registered)
1035 ieee80211_restart_hw(priv->hw);
1036 else
1037 IWL_ERR(priv,
1038 "Cannot request restart before registering with mac80211\n");
1039 } else {
1040 WARN_ON(1);
1041 }
1042 }
1043
1044 /*****************************************************************************
1045 *
1046 * driver setup and teardown
1047 *
1048 *****************************************************************************/
1049
iwl_setup_deferred_work(struct iwl_priv * priv)1050 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1051 {
1052 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0);
1053
1054 INIT_WORK(&priv->restart, iwl_bg_restart);
1055 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1056 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1057 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1058 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1059 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1060
1061 iwl_setup_scan_deferred_work(priv);
1062
1063 if (priv->lib->bt_params)
1064 iwlagn_bt_setup_deferred_work(priv);
1065
1066 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0);
1067
1068 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0);
1069 }
1070
iwl_cancel_deferred_work(struct iwl_priv * priv)1071 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1072 {
1073 if (priv->lib->bt_params)
1074 iwlagn_bt_cancel_deferred_work(priv);
1075
1076 cancel_work_sync(&priv->run_time_calib_work);
1077 cancel_work_sync(&priv->beacon_update);
1078
1079 iwl_cancel_scan_deferred_work(priv);
1080
1081 cancel_work_sync(&priv->bt_full_concurrency);
1082 cancel_work_sync(&priv->bt_runtime_config);
1083
1084 del_timer_sync(&priv->statistics_periodic);
1085 del_timer_sync(&priv->ucode_trace);
1086 }
1087
iwl_init_drv(struct iwl_priv * priv)1088 static int iwl_init_drv(struct iwl_priv *priv)
1089 {
1090 spin_lock_init(&priv->sta_lock);
1091
1092 mutex_init(&priv->mutex);
1093
1094 INIT_LIST_HEAD(&priv->calib_results);
1095
1096 priv->band = NL80211_BAND_2GHZ;
1097
1098 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1099
1100 priv->iw_mode = NL80211_IFTYPE_STATION;
1101 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1102 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1103 priv->agg_tids_count = 0;
1104
1105 priv->rx_statistics_jiffies = jiffies;
1106
1107 /* Choose which receivers/antennas to use */
1108 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1109
1110 iwl_init_scan_params(priv);
1111
1112 /* init bt coex */
1113 if (priv->lib->bt_params &&
1114 priv->lib->bt_params->advanced_bt_coexist) {
1115 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1116 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1117 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1118 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1119 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1120 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1121 }
1122
1123 return 0;
1124 }
1125
iwl_uninit_drv(struct iwl_priv * priv)1126 static void iwl_uninit_drv(struct iwl_priv *priv)
1127 {
1128 kfree(priv->scan_cmd);
1129 kfree(priv->beacon_cmd);
1130 kfree(rcu_dereference_raw(priv->noa_data));
1131 iwl_calib_free_results(priv);
1132 #ifdef CONFIG_IWLWIFI_DEBUGFS
1133 kfree(priv->wowlan_sram);
1134 #endif
1135 }
1136
iwl_set_hw_params(struct iwl_priv * priv)1137 static void iwl_set_hw_params(struct iwl_priv *priv)
1138 {
1139 if (priv->cfg->ht_params)
1140 priv->hw_params.use_rts_for_aggregation =
1141 priv->cfg->ht_params->use_rts_for_aggregation;
1142
1143 /* Device-specific setup */
1144 priv->lib->set_hw_params(priv);
1145 }
1146
1147
1148
1149 /* show what optional capabilities we have */
iwl_option_config(struct iwl_priv * priv)1150 static void iwl_option_config(struct iwl_priv *priv)
1151 {
1152 #ifdef CONFIG_IWLWIFI_DEBUG
1153 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1154 #else
1155 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1156 #endif
1157
1158 #ifdef CONFIG_IWLWIFI_DEBUGFS
1159 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1160 #else
1161 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1162 #endif
1163
1164 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1165 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1166 #else
1167 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1168 #endif
1169 }
1170
iwl_eeprom_init_hw_params(struct iwl_priv * priv)1171 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1172 {
1173 struct iwl_nvm_data *data = priv->nvm_data;
1174
1175 if (data->sku_cap_11n_enable &&
1176 !priv->cfg->ht_params) {
1177 IWL_ERR(priv, "Invalid 11n configuration\n");
1178 return -EINVAL;
1179 }
1180
1181 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable &&
1182 !data->sku_cap_band_52ghz_enable) {
1183 IWL_ERR(priv, "Invalid device sku\n");
1184 return -EINVAL;
1185 }
1186
1187 IWL_DEBUG_INFO(priv,
1188 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1189 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled",
1190 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled",
1191 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1192
1193 priv->hw_params.tx_chains_num =
1194 num_of_ant(data->valid_tx_ant);
1195 if (priv->cfg->rx_with_siso_diversity)
1196 priv->hw_params.rx_chains_num = 1;
1197 else
1198 priv->hw_params.rx_chains_num =
1199 num_of_ant(data->valid_rx_ant);
1200
1201 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1202 data->valid_tx_ant,
1203 data->valid_rx_ant);
1204
1205 return 0;
1206 }
1207
iwl_nvm_check_version(struct iwl_nvm_data * data,struct iwl_trans * trans)1208 static int iwl_nvm_check_version(struct iwl_nvm_data *data,
1209 struct iwl_trans *trans)
1210 {
1211 if (data->nvm_version >= trans->cfg->nvm_ver ||
1212 data->calib_version >= trans->cfg->nvm_calib_ver) {
1213 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
1214 data->nvm_version, data->calib_version);
1215 return 0;
1216 }
1217
1218 IWL_ERR(trans,
1219 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
1220 data->nvm_version, trans->cfg->nvm_ver,
1221 data->calib_version, trans->cfg->nvm_calib_ver);
1222 return -EINVAL;
1223 }
1224
iwl_op_mode_dvm_start(struct iwl_trans * trans,const struct iwl_cfg * cfg,const struct iwl_fw * fw,struct dentry * dbgfs_dir)1225 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1226 const struct iwl_cfg *cfg,
1227 const struct iwl_fw *fw,
1228 struct dentry *dbgfs_dir)
1229 {
1230 struct iwl_priv *priv;
1231 struct ieee80211_hw *hw;
1232 struct iwl_op_mode *op_mode;
1233 u16 num_mac;
1234 u32 ucode_flags;
1235 struct iwl_trans_config trans_cfg = {};
1236 static const u8 no_reclaim_cmds[] = {
1237 REPLY_RX_PHY_CMD,
1238 REPLY_RX_MPDU_CMD,
1239 REPLY_COMPRESSED_BA,
1240 STATISTICS_NOTIFICATION,
1241 REPLY_TX,
1242 };
1243 int i;
1244
1245 /************************
1246 * 1. Allocating HW data
1247 ************************/
1248 hw = iwl_alloc_all();
1249 if (!hw) {
1250 pr_err("%s: Cannot allocate network device\n", trans->name);
1251 goto out;
1252 }
1253
1254 op_mode = hw->priv;
1255 op_mode->ops = &iwl_dvm_ops;
1256 priv = IWL_OP_MODE_GET_DVM(op_mode);
1257 priv->trans = trans;
1258 priv->dev = trans->dev;
1259 priv->cfg = cfg;
1260 priv->fw = fw;
1261
1262 switch (priv->trans->trans_cfg->device_family) {
1263 case IWL_DEVICE_FAMILY_1000:
1264 case IWL_DEVICE_FAMILY_100:
1265 priv->lib = &iwl_dvm_1000_cfg;
1266 break;
1267 case IWL_DEVICE_FAMILY_2000:
1268 priv->lib = &iwl_dvm_2000_cfg;
1269 break;
1270 case IWL_DEVICE_FAMILY_105:
1271 priv->lib = &iwl_dvm_105_cfg;
1272 break;
1273 case IWL_DEVICE_FAMILY_2030:
1274 case IWL_DEVICE_FAMILY_135:
1275 priv->lib = &iwl_dvm_2030_cfg;
1276 break;
1277 case IWL_DEVICE_FAMILY_5000:
1278 priv->lib = &iwl_dvm_5000_cfg;
1279 break;
1280 case IWL_DEVICE_FAMILY_5150:
1281 priv->lib = &iwl_dvm_5150_cfg;
1282 break;
1283 case IWL_DEVICE_FAMILY_6000:
1284 case IWL_DEVICE_FAMILY_6000i:
1285 priv->lib = &iwl_dvm_6000_cfg;
1286 break;
1287 case IWL_DEVICE_FAMILY_6005:
1288 priv->lib = &iwl_dvm_6005_cfg;
1289 break;
1290 case IWL_DEVICE_FAMILY_6050:
1291 case IWL_DEVICE_FAMILY_6150:
1292 priv->lib = &iwl_dvm_6050_cfg;
1293 break;
1294 case IWL_DEVICE_FAMILY_6030:
1295 priv->lib = &iwl_dvm_6030_cfg;
1296 break;
1297 default:
1298 break;
1299 }
1300
1301 if (WARN_ON(!priv->lib))
1302 goto out_free_hw;
1303
1304 /*
1305 * Populate the state variables that the transport layer needs
1306 * to know about.
1307 */
1308 trans_cfg.op_mode = op_mode;
1309 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1310 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1311
1312 switch (iwlwifi_mod_params.amsdu_size) {
1313 case IWL_AMSDU_DEF:
1314 case IWL_AMSDU_4K:
1315 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1316 break;
1317 case IWL_AMSDU_8K:
1318 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
1319 break;
1320 case IWL_AMSDU_12K:
1321 default:
1322 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1323 pr_err("Unsupported amsdu_size: %d\n",
1324 iwlwifi_mod_params.amsdu_size);
1325 }
1326
1327 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
1328
1329 trans_cfg.command_groups = iwl_dvm_groups;
1330 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups);
1331
1332 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1333 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
1334 driver_data[2]);
1335
1336 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1337 priv->trans->trans_cfg->base_params->num_of_queues);
1338
1339 ucode_flags = fw->ucode_capa.flags;
1340
1341 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1342 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1343 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1344 } else {
1345 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1346 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1347 }
1348
1349 /* Configure transport layer */
1350 iwl_trans_configure(priv->trans, &trans_cfg);
1351
1352 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1353 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1354 trans->command_groups = trans_cfg.command_groups;
1355 trans->command_groups_size = trans_cfg.command_groups_size;
1356
1357 /* At this point both hw and priv are allocated. */
1358
1359 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1360
1361 iwl_option_config(priv);
1362
1363 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1364
1365 /* bt channel inhibition enabled*/
1366 priv->bt_ch_announce = true;
1367 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1368 (priv->bt_ch_announce) ? "On" : "Off");
1369
1370 /* these spin locks will be used in apm_ops.init and EEPROM access
1371 * we should init now
1372 */
1373 spin_lock_init(&priv->statistics.lock);
1374
1375 /***********************
1376 * 2. Read REV register
1377 ***********************/
1378 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1379 priv->trans->name, priv->trans->hw_rev);
1380
1381 if (iwl_trans_start_hw(priv->trans))
1382 goto out_free_hw;
1383
1384 /* Read the EEPROM */
1385 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1386 &priv->eeprom_blob_size)) {
1387 IWL_ERR(priv, "Unable to init EEPROM\n");
1388 goto out_free_hw;
1389 }
1390
1391 /* Reset chip to save power until we load uCode during "up". */
1392 iwl_trans_stop_device(priv->trans);
1393
1394 priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg,
1395 priv->eeprom_blob,
1396 priv->eeprom_blob_size);
1397 if (!priv->nvm_data)
1398 goto out_free_eeprom_blob;
1399
1400 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1401 goto out_free_eeprom;
1402
1403 if (iwl_eeprom_init_hw_params(priv))
1404 goto out_free_eeprom;
1405
1406 /* extract MAC Address */
1407 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1408 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1409 priv->hw->wiphy->addresses = priv->addresses;
1410 priv->hw->wiphy->n_addresses = 1;
1411 num_mac = priv->nvm_data->n_hw_addrs;
1412 if (num_mac > 1) {
1413 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1414 ETH_ALEN);
1415 priv->addresses[1].addr[5]++;
1416 priv->hw->wiphy->n_addresses++;
1417 }
1418
1419 /************************
1420 * 4. Setup HW constants
1421 ************************/
1422 iwl_set_hw_params(priv);
1423
1424 if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1425 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1426 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1427 /*
1428 * if not PAN, then don't support P2P -- might be a uCode
1429 * packaging bug or due to the eeprom check above
1430 */
1431 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1432 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1433
1434 /* Configure transport layer again*/
1435 iwl_trans_configure(priv->trans, &trans_cfg);
1436 }
1437
1438 /*******************
1439 * 5. Setup priv
1440 *******************/
1441 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1442 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1443 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1444 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1445 i != IWL_IPAN_CMD_QUEUE_NUM)
1446 priv->queue_to_mac80211[i] = i;
1447 atomic_set(&priv->queue_stop_count[i], 0);
1448 }
1449
1450 if (iwl_init_drv(priv))
1451 goto out_free_eeprom;
1452
1453 /* At this point both hw and priv are initialized. */
1454
1455 /********************
1456 * 6. Setup services
1457 ********************/
1458 iwl_setup_deferred_work(priv);
1459 iwl_setup_rx_handlers(priv);
1460
1461 iwl_power_initialize(priv);
1462 iwl_tt_initialize(priv);
1463
1464 snprintf(priv->hw->wiphy->fw_version,
1465 sizeof(priv->hw->wiphy->fw_version),
1466 "%s", fw->fw_version);
1467
1468 priv->new_scan_threshold_behaviour =
1469 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1470
1471 priv->phy_calib_chain_noise_reset_cmd =
1472 fw->ucode_capa.standard_phy_calibration_size;
1473 priv->phy_calib_chain_noise_gain_cmd =
1474 fw->ucode_capa.standard_phy_calibration_size + 1;
1475
1476 /* initialize all valid contexts */
1477 iwl_init_context(priv, ucode_flags);
1478
1479 /**************************************************
1480 * This is still part of probe() in a sense...
1481 *
1482 * 7. Setup and register with mac80211 and debugfs
1483 **************************************************/
1484 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1485 goto out_destroy_workqueue;
1486
1487 iwl_dbgfs_register(priv, dbgfs_dir);
1488
1489 return op_mode;
1490
1491 out_destroy_workqueue:
1492 iwl_tt_exit(priv);
1493 iwl_cancel_deferred_work(priv);
1494 destroy_workqueue(priv->workqueue);
1495 priv->workqueue = NULL;
1496 iwl_uninit_drv(priv);
1497 out_free_eeprom_blob:
1498 kfree(priv->eeprom_blob);
1499 out_free_eeprom:
1500 kfree(priv->nvm_data);
1501 out_free_hw:
1502 ieee80211_free_hw(priv->hw);
1503 out:
1504 op_mode = NULL;
1505 return op_mode;
1506 }
1507
iwl_op_mode_dvm_stop(struct iwl_op_mode * op_mode)1508 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1509 {
1510 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1511
1512 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1513
1514 iwlagn_mac_unregister(priv);
1515
1516 iwl_tt_exit(priv);
1517
1518 kfree(priv->eeprom_blob);
1519 kfree(priv->nvm_data);
1520
1521 /*netif_stop_queue(dev); */
1522
1523 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1524 * priv->workqueue... so we can't take down the workqueue
1525 * until now... */
1526 destroy_workqueue(priv->workqueue);
1527 priv->workqueue = NULL;
1528
1529 iwl_uninit_drv(priv);
1530
1531 dev_kfree_skb(priv->beacon_skb);
1532
1533 iwl_trans_op_mode_leave(priv->trans);
1534 ieee80211_free_hw(priv->hw);
1535 }
1536
1537 static const char * const desc_lookup_text[] = {
1538 "OK",
1539 "FAIL",
1540 "BAD_PARAM",
1541 "BAD_CHECKSUM",
1542 "NMI_INTERRUPT_WDG",
1543 "SYSASSERT",
1544 "FATAL_ERROR",
1545 "BAD_COMMAND",
1546 "HW_ERROR_TUNE_LOCK",
1547 "HW_ERROR_TEMPERATURE",
1548 "ILLEGAL_CHAN_FREQ",
1549 "VCC_NOT_STABLE",
1550 "FH_ERROR",
1551 "NMI_INTERRUPT_HOST",
1552 "NMI_INTERRUPT_ACTION_PT",
1553 "NMI_INTERRUPT_UNKNOWN",
1554 "UCODE_VERSION_MISMATCH",
1555 "HW_ERROR_ABS_LOCK",
1556 "HW_ERROR_CAL_LOCK_FAIL",
1557 "NMI_INTERRUPT_INST_ACTION_PT",
1558 "NMI_INTERRUPT_DATA_ACTION_PT",
1559 "NMI_TRM_HW_ER",
1560 "NMI_INTERRUPT_TRM",
1561 "NMI_INTERRUPT_BREAK_POINT",
1562 "DEBUG_0",
1563 "DEBUG_1",
1564 "DEBUG_2",
1565 "DEBUG_3",
1566 };
1567
1568 static struct { char *name; u8 num; } advanced_lookup[] = {
1569 { "NMI_INTERRUPT_WDG", 0x34 },
1570 { "SYSASSERT", 0x35 },
1571 { "UCODE_VERSION_MISMATCH", 0x37 },
1572 { "BAD_COMMAND", 0x38 },
1573 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1574 { "FATAL_ERROR", 0x3D },
1575 { "NMI_TRM_HW_ERR", 0x46 },
1576 { "NMI_INTERRUPT_TRM", 0x4C },
1577 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1578 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1579 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1580 { "NMI_INTERRUPT_HOST", 0x66 },
1581 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1582 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1583 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1584 { "ADVANCED_SYSASSERT", 0 },
1585 };
1586
desc_lookup(u32 num)1587 static const char *desc_lookup(u32 num)
1588 {
1589 int i;
1590 int max = ARRAY_SIZE(desc_lookup_text);
1591
1592 if (num < max)
1593 return desc_lookup_text[num];
1594
1595 max = ARRAY_SIZE(advanced_lookup) - 1;
1596 for (i = 0; i < max; i++) {
1597 if (advanced_lookup[i].num == num)
1598 break;
1599 }
1600 return advanced_lookup[i].name;
1601 }
1602
1603 #define ERROR_START_OFFSET (1 * sizeof(u32))
1604 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1605
iwl_dump_nic_error_log(struct iwl_priv * priv)1606 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1607 {
1608 struct iwl_trans *trans = priv->trans;
1609 u32 base;
1610 struct iwl_error_event_table table;
1611
1612 base = priv->device_pointers.error_event_table;
1613 if (priv->cur_ucode == IWL_UCODE_INIT) {
1614 if (!base)
1615 base = priv->fw->init_errlog_ptr;
1616 } else {
1617 if (!base)
1618 base = priv->fw->inst_errlog_ptr;
1619 }
1620
1621 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1622 IWL_ERR(priv,
1623 "Not valid error log pointer 0x%08X for %s uCode\n",
1624 base,
1625 (priv->cur_ucode == IWL_UCODE_INIT)
1626 ? "Init" : "RT");
1627 return;
1628 }
1629
1630 /*TODO: Update dbgfs with ISR error stats obtained below */
1631 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1632
1633 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1634 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1635 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1636 priv->status, table.valid);
1637 }
1638
1639 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1640 desc_lookup(table.error_id));
1641 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1642 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1643 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1644 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1645 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1646 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1647 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1648 IWL_ERR(priv, "0x%08X | line\n", table.line);
1649 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1650 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1651 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1652 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1653 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1654 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1655 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1656 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1657 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1658 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1659 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1660 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1661 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1662 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1663 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1664 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1665 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1666 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1667 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1668 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1669 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1670 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1671 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1672 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1673 }
1674
1675 #define EVENT_START_OFFSET (4 * sizeof(u32))
1676
1677 /*
1678 * iwl_print_event_log - Dump error event log to syslog
1679 */
iwl_print_event_log(struct iwl_priv * priv,u32 start_idx,u32 num_events,u32 mode,int pos,char ** buf,size_t bufsz)1680 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1681 u32 num_events, u32 mode,
1682 int pos, char **buf, size_t bufsz)
1683 {
1684 u32 i;
1685 u32 base; /* SRAM byte address of event log header */
1686 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1687 u32 ptr; /* SRAM byte address of log data */
1688 u32 ev, time, data; /* event log data */
1689
1690 struct iwl_trans *trans = priv->trans;
1691
1692 if (num_events == 0)
1693 return pos;
1694
1695 base = priv->device_pointers.log_event_table;
1696 if (priv->cur_ucode == IWL_UCODE_INIT) {
1697 if (!base)
1698 base = priv->fw->init_evtlog_ptr;
1699 } else {
1700 if (!base)
1701 base = priv->fw->inst_evtlog_ptr;
1702 }
1703
1704 if (mode == 0)
1705 event_size = 2 * sizeof(u32);
1706 else
1707 event_size = 3 * sizeof(u32);
1708
1709 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1710
1711 /* Make sure device is powered up for SRAM reads */
1712 if (!iwl_trans_grab_nic_access(trans))
1713 return pos;
1714
1715 /* Set starting address; reads will auto-increment */
1716 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1717
1718 /* "time" is actually "data" for mode 0 (no timestamp).
1719 * place event id # at far right for easier visual parsing. */
1720 for (i = 0; i < num_events; i++) {
1721 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1722 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1723 if (mode == 0) {
1724 /* data, ev */
1725 if (bufsz) {
1726 pos += scnprintf(*buf + pos, bufsz - pos,
1727 "EVT_LOG:0x%08x:%04u\n",
1728 time, ev);
1729 } else {
1730 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1731 time, ev);
1732 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1733 time, ev);
1734 }
1735 } else {
1736 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1737 if (bufsz) {
1738 pos += scnprintf(*buf + pos, bufsz - pos,
1739 "EVT_LOGT:%010u:0x%08x:%04u\n",
1740 time, data, ev);
1741 } else {
1742 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1743 time, data, ev);
1744 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1745 data, ev);
1746 }
1747 }
1748 }
1749
1750 /* Allow device to power down */
1751 iwl_trans_release_nic_access(trans);
1752 return pos;
1753 }
1754
1755 /*
1756 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1757 */
iwl_print_last_event_logs(struct iwl_priv * priv,u32 capacity,u32 num_wraps,u32 next_entry,u32 size,u32 mode,int pos,char ** buf,size_t bufsz)1758 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1759 u32 num_wraps, u32 next_entry,
1760 u32 size, u32 mode,
1761 int pos, char **buf, size_t bufsz)
1762 {
1763 /*
1764 * display the newest DEFAULT_LOG_ENTRIES entries
1765 * i.e the entries just before the next ont that uCode would fill.
1766 */
1767 if (num_wraps) {
1768 if (next_entry < size) {
1769 pos = iwl_print_event_log(priv,
1770 capacity - (size - next_entry),
1771 size - next_entry, mode,
1772 pos, buf, bufsz);
1773 pos = iwl_print_event_log(priv, 0,
1774 next_entry, mode,
1775 pos, buf, bufsz);
1776 } else
1777 pos = iwl_print_event_log(priv, next_entry - size,
1778 size, mode, pos, buf, bufsz);
1779 } else {
1780 if (next_entry < size) {
1781 pos = iwl_print_event_log(priv, 0, next_entry,
1782 mode, pos, buf, bufsz);
1783 } else {
1784 pos = iwl_print_event_log(priv, next_entry - size,
1785 size, mode, pos, buf, bufsz);
1786 }
1787 }
1788 return pos;
1789 }
1790
1791 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1792
iwl_dump_nic_event_log(struct iwl_priv * priv,bool full_log,char ** buf)1793 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1794 char **buf)
1795 {
1796 u32 base; /* SRAM byte address of event log header */
1797 u32 capacity; /* event log capacity in # entries */
1798 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1799 u32 num_wraps; /* # times uCode wrapped to top of log */
1800 u32 next_entry; /* index of next entry to be written by uCode */
1801 u32 size; /* # entries that we'll print */
1802 u32 logsize;
1803 int pos = 0;
1804 size_t bufsz = 0;
1805 struct iwl_trans *trans = priv->trans;
1806
1807 base = priv->device_pointers.log_event_table;
1808 if (priv->cur_ucode == IWL_UCODE_INIT) {
1809 logsize = priv->fw->init_evtlog_size;
1810 if (!base)
1811 base = priv->fw->init_evtlog_ptr;
1812 } else {
1813 logsize = priv->fw->inst_evtlog_size;
1814 if (!base)
1815 base = priv->fw->inst_evtlog_ptr;
1816 }
1817
1818 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1819 IWL_ERR(priv,
1820 "Invalid event log pointer 0x%08X for %s uCode\n",
1821 base,
1822 (priv->cur_ucode == IWL_UCODE_INIT)
1823 ? "Init" : "RT");
1824 return -EINVAL;
1825 }
1826
1827 /* event log header */
1828 capacity = iwl_trans_read_mem32(trans, base);
1829 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1830 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1831 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1832
1833 if (capacity > logsize) {
1834 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1835 "entries\n", capacity, logsize);
1836 capacity = logsize;
1837 }
1838
1839 if (next_entry > logsize) {
1840 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1841 next_entry, logsize);
1842 next_entry = logsize;
1843 }
1844
1845 size = num_wraps ? capacity : next_entry;
1846
1847 /* bail out if nothing in log */
1848 if (size == 0) {
1849 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1850 return pos;
1851 }
1852
1853 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log)
1854 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1855 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1856 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1857 size);
1858
1859 #ifdef CONFIG_IWLWIFI_DEBUG
1860 if (buf) {
1861 if (full_log)
1862 bufsz = capacity * 48;
1863 else
1864 bufsz = size * 48;
1865 *buf = kmalloc(bufsz, GFP_KERNEL);
1866 if (!*buf)
1867 return -ENOMEM;
1868 }
1869 if (iwl_have_debug_level(IWL_DL_FW) || full_log) {
1870 /*
1871 * if uCode has wrapped back to top of log,
1872 * start at the oldest entry,
1873 * i.e the next one that uCode would fill.
1874 */
1875 if (num_wraps)
1876 pos = iwl_print_event_log(priv, next_entry,
1877 capacity - next_entry, mode,
1878 pos, buf, bufsz);
1879 /* (then/else) start at top of log */
1880 pos = iwl_print_event_log(priv, 0,
1881 next_entry, mode, pos, buf, bufsz);
1882 } else
1883 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1884 next_entry, size, mode,
1885 pos, buf, bufsz);
1886 #else
1887 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1888 next_entry, size, mode,
1889 pos, buf, bufsz);
1890 #endif
1891 return pos;
1892 }
1893
iwlagn_fw_error(struct iwl_priv * priv,bool ondemand)1894 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1895 {
1896 unsigned int reload_msec;
1897 unsigned long reload_jiffies;
1898
1899 if (iwl_have_debug_level(IWL_DL_FW))
1900 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1901
1902 /* uCode is no longer loaded. */
1903 priv->ucode_loaded = false;
1904
1905 /* Set the FW error flag -- cleared on iwl_down */
1906 set_bit(STATUS_FW_ERROR, &priv->status);
1907
1908 iwl_abort_notification_waits(&priv->notif_wait);
1909
1910 /* Keep the restart process from trying to send host
1911 * commands by clearing the ready bit */
1912 clear_bit(STATUS_READY, &priv->status);
1913
1914 if (!ondemand) {
1915 /*
1916 * If firmware keep reloading, then it indicate something
1917 * serious wrong and firmware having problem to recover
1918 * from it. Instead of keep trying which will fill the syslog
1919 * and hang the system, let's just stop it
1920 */
1921 reload_jiffies = jiffies;
1922 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1923 (long) priv->reload_jiffies);
1924 priv->reload_jiffies = reload_jiffies;
1925 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1926 priv->reload_count++;
1927 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1928 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1929 return;
1930 }
1931 } else
1932 priv->reload_count = 0;
1933 }
1934
1935 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1936 if (iwlwifi_mod_params.fw_restart) {
1937 IWL_DEBUG_FW(priv,
1938 "Restarting adapter due to uCode error.\n");
1939 queue_work(priv->workqueue, &priv->restart);
1940 } else
1941 IWL_DEBUG_FW(priv,
1942 "Detected FW error, but not restarting\n");
1943 }
1944 }
1945
iwl_nic_error(struct iwl_op_mode * op_mode,bool sync)1946 static void iwl_nic_error(struct iwl_op_mode *op_mode, bool sync)
1947 {
1948 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1949
1950 IWL_ERR(priv, "Loaded firmware version: %s\n",
1951 priv->fw->fw_version);
1952
1953 iwl_dump_nic_error_log(priv);
1954 iwl_dump_nic_event_log(priv, false, NULL);
1955
1956 iwlagn_fw_error(priv, false);
1957 }
1958
iwl_cmd_queue_full(struct iwl_op_mode * op_mode)1959 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1960 {
1961 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1962
1963 if (!iwl_check_for_ct_kill(priv)) {
1964 IWL_ERR(priv, "Restarting adapter queue is full\n");
1965 iwlagn_fw_error(priv, false);
1966 }
1967 }
1968
1969 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1970
iwl_nic_config(struct iwl_op_mode * op_mode)1971 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1972 {
1973 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1974
1975 /* SKU Control */
1976 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1977 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1978 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1979 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1980 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1981 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1982 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1983
1984 /* write radio config values to register */
1985 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1986 u32 reg_val =
1987 priv->nvm_data->radio_cfg_type <<
1988 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1989 priv->nvm_data->radio_cfg_step <<
1990 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1991 priv->nvm_data->radio_cfg_dash <<
1992 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1993
1994 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1995 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1996 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1997 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1998 reg_val);
1999
2000 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2001 priv->nvm_data->radio_cfg_type,
2002 priv->nvm_data->radio_cfg_step,
2003 priv->nvm_data->radio_cfg_dash);
2004 } else {
2005 WARN_ON(1);
2006 }
2007
2008 /* set CSR_HW_CONFIG_REG for uCode use */
2009 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2010 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2011 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2012
2013 /* W/A : NIC is stuck in a reset state after Early PCIe power off
2014 * (PCIe power is lost before PERST# is asserted),
2015 * causing ME FW to lose ownership and not being able to obtain it back.
2016 */
2017 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2018 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2019 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2020
2021 if (priv->lib->nic_config)
2022 priv->lib->nic_config(priv);
2023 }
2024
iwl_wimax_active(struct iwl_op_mode * op_mode)2025 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2026 {
2027 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2028
2029 clear_bit(STATUS_READY, &priv->status);
2030 IWL_ERR(priv, "RF is used by WiMAX\n");
2031 }
2032
iwl_stop_sw_queue(struct iwl_op_mode * op_mode,int queue)2033 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2034 {
2035 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2036 int mq = priv->queue_to_mac80211[queue];
2037
2038 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2039 return;
2040
2041 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2042 IWL_DEBUG_TX_QUEUES(priv,
2043 "queue %d (mac80211 %d) already stopped\n",
2044 queue, mq);
2045 return;
2046 }
2047
2048 set_bit(mq, &priv->transport_queue_stop);
2049 ieee80211_stop_queue(priv->hw, mq);
2050 }
2051
iwl_wake_sw_queue(struct iwl_op_mode * op_mode,int queue)2052 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2053 {
2054 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2055 int mq = priv->queue_to_mac80211[queue];
2056
2057 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2058 return;
2059
2060 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2061 IWL_DEBUG_TX_QUEUES(priv,
2062 "queue %d (mac80211 %d) already awake\n",
2063 queue, mq);
2064 return;
2065 }
2066
2067 clear_bit(mq, &priv->transport_queue_stop);
2068
2069 if (!priv->passive_no_rx)
2070 ieee80211_wake_queue(priv->hw, mq);
2071 }
2072
iwlagn_lift_passive_no_rx(struct iwl_priv * priv)2073 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2074 {
2075 int mq;
2076
2077 if (!priv->passive_no_rx)
2078 return;
2079
2080 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2081 if (!test_bit(mq, &priv->transport_queue_stop)) {
2082 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
2083 ieee80211_wake_queue(priv->hw, mq);
2084 } else {
2085 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2086 }
2087 }
2088
2089 priv->passive_no_rx = false;
2090 }
2091
iwl_free_skb(struct iwl_op_mode * op_mode,struct sk_buff * skb)2092 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2093 {
2094 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2095 struct ieee80211_tx_info *info;
2096
2097 info = IEEE80211_SKB_CB(skb);
2098 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2099 ieee80211_free_txskb(priv->hw, skb);
2100 }
2101
iwl_set_hw_rfkill_state(struct iwl_op_mode * op_mode,bool state)2102 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2103 {
2104 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2105
2106 if (state)
2107 set_bit(STATUS_RF_KILL_HW, &priv->status);
2108 else
2109 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2110
2111 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2112
2113 return false;
2114 }
2115
2116 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2117 .start = iwl_op_mode_dvm_start,
2118 .stop = iwl_op_mode_dvm_stop,
2119 .rx = iwl_rx_dispatch,
2120 .queue_full = iwl_stop_sw_queue,
2121 .queue_not_full = iwl_wake_sw_queue,
2122 .hw_rf_kill = iwl_set_hw_rfkill_state,
2123 .free_skb = iwl_free_skb,
2124 .nic_error = iwl_nic_error,
2125 .cmd_queue_full = iwl_cmd_queue_full,
2126 .nic_config = iwl_nic_config,
2127 .wimax_active = iwl_wimax_active,
2128 };
2129
2130 /*****************************************************************************
2131 *
2132 * driver and module entry point
2133 *
2134 *****************************************************************************/
iwl_init(void)2135 static int __init iwl_init(void)
2136 {
2137
2138 int ret;
2139
2140 ret = iwlagn_rate_control_register();
2141 if (ret) {
2142 pr_err("Unable to register rate control algorithm: %d\n", ret);
2143 return ret;
2144 }
2145
2146 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2147 if (ret) {
2148 pr_err("Unable to register op_mode: %d\n", ret);
2149 iwlagn_rate_control_unregister();
2150 }
2151
2152 return ret;
2153 }
2154 module_init(iwl_init);
2155
iwl_exit(void)2156 static void __exit iwl_exit(void)
2157 {
2158 iwl_opmode_deregister("iwldvm");
2159 iwlagn_rate_control_unregister();
2160 }
2161 module_exit(iwl_exit);
2162