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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / intel / iwlwifi / dvm / main.c
blob598ee73155588aeccfd945f5191880e6ec522055
1 // SPDX-License-Identifier: GPL-2.0-only
2 /******************************************************************************
3 *
4 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2015 Intel Deutschland GmbH
6 * Copyright (C) 2018 - 2019 Intel Corporation
7 *
8 * Portions of this file are derived from the ipw3945 project, as well
9 * as portions of the ieee80211 subsystem header files.
10 *
11 * Contact Information:
12 * Intel Linux Wireless <linuxwifi@intel.com>
13 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
14 *
15 *****************************************************************************/
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/delay.h>
24 #include <linux/sched.h>
25 #include <linux/skbuff.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/if_arp.h>
29
30 #include <net/mac80211.h>
31
32 #include <asm/div64.h>
33
34 #include "iwl-eeprom-read.h"
35 #include "iwl-eeprom-parse.h"
36 #include "iwl-io.h"
37 #include "iwl-trans.h"
38 #include "iwl-op-mode.h"
39 #include "iwl-drv.h"
40 #include "iwl-modparams.h"
41 #include "iwl-prph.h"
42
43 #include "dev.h"
44 #include "calib.h"
45 #include "agn.h"
46
47
48 /******************************************************************************
49 *
50 * module boiler plate
51 *
52 ******************************************************************************/
53
54 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
55 MODULE_DESCRIPTION(DRV_DESCRIPTION);
56 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
57 MODULE_LICENSE("GPL");
58
59 /* Please keep this array *SORTED* by hex value.
60 * Access is done through binary search.
61 * A warning will be triggered on violation.
62 */
63 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = {
64 HCMD_NAME(REPLY_ALIVE),
65 HCMD_NAME(REPLY_ERROR),
66 HCMD_NAME(REPLY_ECHO),
67 HCMD_NAME(REPLY_RXON),
68 HCMD_NAME(REPLY_RXON_ASSOC),
69 HCMD_NAME(REPLY_QOS_PARAM),
70 HCMD_NAME(REPLY_RXON_TIMING),
71 HCMD_NAME(REPLY_ADD_STA),
72 HCMD_NAME(REPLY_REMOVE_STA),
73 HCMD_NAME(REPLY_REMOVE_ALL_STA),
74 HCMD_NAME(REPLY_TX),
75 HCMD_NAME(REPLY_TXFIFO_FLUSH),
76 HCMD_NAME(REPLY_WEPKEY),
77 HCMD_NAME(REPLY_LEDS_CMD),
78 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD),
79 HCMD_NAME(COEX_PRIORITY_TABLE_CMD),
80 HCMD_NAME(COEX_MEDIUM_NOTIFICATION),
81 HCMD_NAME(COEX_EVENT_CMD),
82 HCMD_NAME(TEMPERATURE_NOTIFICATION),
83 HCMD_NAME(CALIBRATION_CFG_CMD),
84 HCMD_NAME(CALIBRATION_RES_NOTIFICATION),
85 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION),
86 HCMD_NAME(REPLY_QUIET_CMD),
87 HCMD_NAME(REPLY_CHANNEL_SWITCH),
88 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION),
89 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD),
90 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION),
91 HCMD_NAME(POWER_TABLE_CMD),
92 HCMD_NAME(PM_SLEEP_NOTIFICATION),
93 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC),
94 HCMD_NAME(REPLY_SCAN_CMD),
95 HCMD_NAME(REPLY_SCAN_ABORT_CMD),
96 HCMD_NAME(SCAN_START_NOTIFICATION),
97 HCMD_NAME(SCAN_RESULTS_NOTIFICATION),
98 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION),
99 HCMD_NAME(BEACON_NOTIFICATION),
100 HCMD_NAME(REPLY_TX_BEACON),
101 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION),
102 HCMD_NAME(REPLY_TX_POWER_DBM_CMD),
103 HCMD_NAME(QUIET_NOTIFICATION),
104 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD),
105 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1),
106 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
107 HCMD_NAME(MEASURE_ABORT_NOTIFICATION),
108 HCMD_NAME(REPLY_BT_CONFIG),
109 HCMD_NAME(REPLY_STATISTICS_CMD),
110 HCMD_NAME(STATISTICS_NOTIFICATION),
111 HCMD_NAME(REPLY_CARD_STATE_CMD),
112 HCMD_NAME(CARD_STATE_NOTIFICATION),
113 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
114 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD),
115 HCMD_NAME(SENSITIVITY_CMD),
116 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD),
117 HCMD_NAME(REPLY_WIPAN_PARAMS),
118 HCMD_NAME(REPLY_WIPAN_RXON),
119 HCMD_NAME(REPLY_WIPAN_RXON_TIMING),
120 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC),
121 HCMD_NAME(REPLY_WIPAN_QOS_PARAM),
122 HCMD_NAME(REPLY_WIPAN_WEPKEY),
123 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH),
124 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION),
125 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE),
126 HCMD_NAME(REPLY_RX_PHY_CMD),
127 HCMD_NAME(REPLY_RX_MPDU_CMD),
128 HCMD_NAME(REPLY_RX),
129 HCMD_NAME(REPLY_COMPRESSED_BA),
130 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE),
131 HCMD_NAME(REPLY_BT_COEX_PROT_ENV),
132 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF),
133 HCMD_NAME(REPLY_D3_CONFIG),
134 HCMD_NAME(REPLY_WOWLAN_PATTERNS),
135 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER),
136 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS),
137 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS),
138 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL),
139 HCMD_NAME(REPLY_WOWLAN_GET_STATUS),
140 };
141
142 static const struct iwl_hcmd_arr iwl_dvm_groups[] = {
143 [0x0] = HCMD_ARR(iwl_dvm_cmd_names),
144 };
145
146 static const struct iwl_op_mode_ops iwl_dvm_ops;
147
148 void iwl_update_chain_flags(struct iwl_priv *priv)
149 {
150 struct iwl_rxon_context *ctx;
151
152 for_each_context(priv, ctx) {
153 iwlagn_set_rxon_chain(priv, ctx);
154 if (ctx->active.rx_chain != ctx->staging.rx_chain)
155 iwlagn_commit_rxon(priv, ctx);
156 }
157 }
158
159 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
160 static void iwl_set_beacon_tim(struct iwl_priv *priv,
161 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
162 u8 *beacon, u32 frame_size)
163 {
164 u16 tim_idx;
165 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
166
167 /*
168 * The index is relative to frame start but we start looking at the
169 * variable-length part of the beacon.
170 */
171 tim_idx = mgmt->u.beacon.variable - beacon;
172
173 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
174 while ((tim_idx < (frame_size - 2)) &&
175 (beacon[tim_idx] != WLAN_EID_TIM))
176 tim_idx += beacon[tim_idx+1] + 2;
177
178 /* If TIM field was found, set variables */
179 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
180 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
181 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
182 } else
183 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
184 }
185
186 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
187 {
188 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
189 struct iwl_host_cmd cmd = {
190 .id = REPLY_TX_BEACON,
191 };
192 struct ieee80211_tx_info *info;
193 u32 frame_size;
194 u32 rate_flags;
195 u32 rate;
196
197 /*
198 * We have to set up the TX command, the TX Beacon command, and the
199 * beacon contents.
200 */
201
202 lockdep_assert_held(&priv->mutex);
203
204 if (!priv->beacon_ctx) {
205 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
206 return 0;
207 }
208
209 if (WARN_ON(!priv->beacon_skb))
210 return -EINVAL;
211
212 /* Allocate beacon command */
213 if (!priv->beacon_cmd)
214 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
215 tx_beacon_cmd = priv->beacon_cmd;
216 if (!tx_beacon_cmd)
217 return -ENOMEM;
218
219 frame_size = priv->beacon_skb->len;
220
221 /* Set up TX command fields */
222 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
223 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
224 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
225 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
226 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
227
228 /* Set up TX beacon command fields */
229 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
230 frame_size);
231
232 /* Set up packet rate and flags */
233 info = IEEE80211_SKB_CB(priv->beacon_skb);
234
235 /*
236 * Let's set up the rate at least somewhat correctly;
237 * it will currently not actually be used by the uCode,
238 * it uses the broadcast station's rate instead.
239 */
240 if (info->control.rates[0].idx < 0 ||
241 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
242 rate = 0;
243 else
244 rate = info->control.rates[0].idx;
245
246 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
247 priv->nvm_data->valid_tx_ant);
248 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
249
250 /* In mac80211, rates for 5 GHz start at 0 */
251 if (info->band == NL80211_BAND_5GHZ)
252 rate += IWL_FIRST_OFDM_RATE;
253 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
254 rate_flags |= RATE_MCS_CCK_MSK;
255
256 tx_beacon_cmd->tx.rate_n_flags =
257 iwl_hw_set_rate_n_flags(rate, rate_flags);
258
259 /* Submit command */
260 cmd.len[0] = sizeof(*tx_beacon_cmd);
261 cmd.data[0] = tx_beacon_cmd;
262 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
263 cmd.len[1] = frame_size;
264 cmd.data[1] = priv->beacon_skb->data;
265 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
266
267 return iwl_dvm_send_cmd(priv, &cmd);
268 }
269
270 static void iwl_bg_beacon_update(struct work_struct *work)
271 {
272 struct iwl_priv *priv =
273 container_of(work, struct iwl_priv, beacon_update);
274 struct sk_buff *beacon;
275
276 mutex_lock(&priv->mutex);
277 if (!priv->beacon_ctx) {
278 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
279 goto out;
280 }
281
282 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
283 /*
284 * The ucode will send beacon notifications even in
285 * IBSS mode, but we don't want to process them. But
286 * we need to defer the type check to here due to
287 * requiring locking around the beacon_ctx access.
288 */
289 goto out;
290 }
291
292 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
293 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
294 if (!beacon) {
295 IWL_ERR(priv, "update beacon failed -- keeping old\n");
296 goto out;
297 }
298
299 /* new beacon skb is allocated every time; dispose previous.*/
300 dev_kfree_skb(priv->beacon_skb);
301
302 priv->beacon_skb = beacon;
303
304 iwlagn_send_beacon_cmd(priv);
305 out:
306 mutex_unlock(&priv->mutex);
307 }
308
309 static void iwl_bg_bt_runtime_config(struct work_struct *work)
310 {
311 struct iwl_priv *priv =
312 container_of(work, struct iwl_priv, bt_runtime_config);
313
314 mutex_lock(&priv->mutex);
315 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
316 goto out;
317
318 /* dont send host command if rf-kill is on */
319 if (!iwl_is_ready_rf(priv))
320 goto out;
321
322 iwlagn_send_advance_bt_config(priv);
323 out:
324 mutex_unlock(&priv->mutex);
325 }
326
327 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
328 {
329 struct iwl_priv *priv =
330 container_of(work, struct iwl_priv, bt_full_concurrency);
331 struct iwl_rxon_context *ctx;
332
333 mutex_lock(&priv->mutex);
334
335 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
336 goto out;
337
338 /* dont send host command if rf-kill is on */
339 if (!iwl_is_ready_rf(priv))
340 goto out;
341
342 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
343 priv->bt_full_concurrent ?
344 "full concurrency" : "3-wire");
345
346 /*
347 * LQ & RXON updated cmds must be sent before BT Config cmd
348 * to avoid 3-wire collisions
349 */
350 for_each_context(priv, ctx) {
351 iwlagn_set_rxon_chain(priv, ctx);
352 iwlagn_commit_rxon(priv, ctx);
353 }
354
355 iwlagn_send_advance_bt_config(priv);
356 out:
357 mutex_unlock(&priv->mutex);
358 }
359
360 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
361 {
362 struct iwl_statistics_cmd statistics_cmd = {
363 .configuration_flags =
364 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
365 };
366
367 if (flags & CMD_ASYNC)
368 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
369 CMD_ASYNC,
370 sizeof(struct iwl_statistics_cmd),
371 &statistics_cmd);
372 else
373 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
374 sizeof(struct iwl_statistics_cmd),
375 &statistics_cmd);
376 }
377
378 /**
379 * iwl_bg_statistics_periodic - Timer callback to queue statistics
380 *
381 * This callback is provided in order to send a statistics request.
382 *
383 * This timer function is continually reset to execute within
384 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
385 * was received. We need to ensure we receive the statistics in order
386 * to update the temperature used for calibrating the TXPOWER.
387 */
388 static void iwl_bg_statistics_periodic(struct timer_list *t)
389 {
390 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic);
391
392 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
393 return;
394
395 /* dont send host command if rf-kill is on */
396 if (!iwl_is_ready_rf(priv))
397 return;
398
399 iwl_send_statistics_request(priv, CMD_ASYNC, false);
400 }
401
402
403 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
404 u32 start_idx, u32 num_events,
405 u32 capacity, u32 mode)
406 {
407 u32 i;
408 u32 ptr; /* SRAM byte address of log data */
409 u32 ev, time, data; /* event log data */
410 unsigned long reg_flags;
411
412 if (mode == 0)
413 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
414 else
415 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
416
417 /* Make sure device is powered up for SRAM reads */
418 if (!iwl_trans_grab_nic_access(priv->trans, &reg_flags))
419 return;
420
421 /* Set starting address; reads will auto-increment */
422 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
423
424 /*
425 * Refuse to read more than would have fit into the log from
426 * the current start_idx. This used to happen due to the race
427 * described below, but now WARN because the code below should
428 * prevent it from happening here.
429 */
430 if (WARN_ON(num_events > capacity - start_idx))
431 num_events = capacity - start_idx;
432
433 /*
434 * "time" is actually "data" for mode 0 (no timestamp).
435 * place event id # at far right for easier visual parsing.
436 */
437 for (i = 0; i < num_events; i++) {
438 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
439 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
440 if (mode == 0) {
441 trace_iwlwifi_dev_ucode_cont_event(
442 priv->trans->dev, 0, time, ev);
443 } else {
444 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
445 trace_iwlwifi_dev_ucode_cont_event(
446 priv->trans->dev, time, data, ev);
447 }
448 }
449 /* Allow device to power down */
450 iwl_trans_release_nic_access(priv->trans, &reg_flags);
451 }
452
453 static void iwl_continuous_event_trace(struct iwl_priv *priv)
454 {
455 u32 capacity; /* event log capacity in # entries */
456 struct {
457 u32 capacity;
458 u32 mode;
459 u32 wrap_counter;
460 u32 write_counter;
461 } __packed read;
462 u32 base; /* SRAM byte address of event log header */
463 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
464 u32 num_wraps; /* # times uCode wrapped to top of log */
465 u32 next_entry; /* index of next entry to be written by uCode */
466
467 base = priv->device_pointers.log_event_table;
468 if (iwlagn_hw_valid_rtc_data_addr(base)) {
469 iwl_trans_read_mem_bytes(priv->trans, base,
470 &read, sizeof(read));
471 capacity = read.capacity;
472 mode = read.mode;
473 num_wraps = read.wrap_counter;
474 next_entry = read.write_counter;
475 } else
476 return;
477
478 /*
479 * Unfortunately, the uCode doesn't use temporary variables.
480 * Therefore, it can happen that we read next_entry == capacity,
481 * which really means next_entry == 0.
482 */
483 if (unlikely(next_entry == capacity))
484 next_entry = 0;
485 /*
486 * Additionally, the uCode increases the write pointer before
487 * the wraps counter, so if the write pointer is smaller than
488 * the old write pointer (wrap occurred) but we read that no
489 * wrap occurred, we actually read between the next_entry and
490 * num_wraps update (this does happen in practice!!) -- take
491 * that into account by increasing num_wraps.
492 */
493 if (unlikely(next_entry < priv->event_log.next_entry &&
494 num_wraps == priv->event_log.num_wraps))
495 num_wraps++;
496
497 if (num_wraps == priv->event_log.num_wraps) {
498 iwl_print_cont_event_trace(
499 priv, base, priv->event_log.next_entry,
500 next_entry - priv->event_log.next_entry,
501 capacity, mode);
502
503 priv->event_log.non_wraps_count++;
504 } else {
505 if (num_wraps - priv->event_log.num_wraps > 1)
506 priv->event_log.wraps_more_count++;
507 else
508 priv->event_log.wraps_once_count++;
509
510 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
511 num_wraps - priv->event_log.num_wraps,
512 next_entry, priv->event_log.next_entry);
513
514 if (next_entry < priv->event_log.next_entry) {
515 iwl_print_cont_event_trace(
516 priv, base, priv->event_log.next_entry,
517 capacity - priv->event_log.next_entry,
518 capacity, mode);
519
520 iwl_print_cont_event_trace(
521 priv, base, 0, next_entry, capacity, mode);
522 } else {
523 iwl_print_cont_event_trace(
524 priv, base, next_entry,
525 capacity - next_entry,
526 capacity, mode);
527
528 iwl_print_cont_event_trace(
529 priv, base, 0, next_entry, capacity, mode);
530 }
531 }
532
533 priv->event_log.num_wraps = num_wraps;
534 priv->event_log.next_entry = next_entry;
535 }
536
537 /**
538 * iwl_bg_ucode_trace - Timer callback to log ucode event
539 *
540 * The timer is continually set to execute every
541 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
542 * this function is to perform continuous uCode event logging operation
543 * if enabled
544 */
545 static void iwl_bg_ucode_trace(struct timer_list *t)
546 {
547 struct iwl_priv *priv = from_timer(priv, t, ucode_trace);
548
549 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
550 return;
551
552 if (priv->event_log.ucode_trace) {
553 iwl_continuous_event_trace(priv);
554 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
555 mod_timer(&priv->ucode_trace,
556 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
557 }
558 }
559
560 static void iwl_bg_tx_flush(struct work_struct *work)
561 {
562 struct iwl_priv *priv =
563 container_of(work, struct iwl_priv, tx_flush);
564
565 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
566 return;
567
568 /* do nothing if rf-kill is on */
569 if (!iwl_is_ready_rf(priv))
570 return;
571
572 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
573 iwlagn_dev_txfifo_flush(priv);
574 }
575
576 /*
577 * queue/FIFO/AC mapping definitions
578 */
579
580 static const u8 iwlagn_bss_ac_to_fifo[] = {
581 IWL_TX_FIFO_VO,
582 IWL_TX_FIFO_VI,
583 IWL_TX_FIFO_BE,
584 IWL_TX_FIFO_BK,
585 };
586
587 static const u8 iwlagn_bss_ac_to_queue[] = {
588 0, 1, 2, 3,
589 };
590
591 static const u8 iwlagn_pan_ac_to_fifo[] = {
592 IWL_TX_FIFO_VO_IPAN,
593 IWL_TX_FIFO_VI_IPAN,
594 IWL_TX_FIFO_BE_IPAN,
595 IWL_TX_FIFO_BK_IPAN,
596 };
597
598 static const u8 iwlagn_pan_ac_to_queue[] = {
599 7, 6, 5, 4,
600 };
601
602 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
603 {
604 int i;
605
606 /*
607 * The default context is always valid,
608 * the PAN context depends on uCode.
609 */
610 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
611 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
612 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
613
614 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
615 priv->contexts[i].ctxid = i;
616
617 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
618 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
619 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
620 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
621 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
622 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
623 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
624 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
625 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
626 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
627 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
628 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
629 BIT(NL80211_IFTYPE_STATION);
630 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
631 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
632 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
633 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
634 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
635 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
636 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
637 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
638
639 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
640 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
641 REPLY_WIPAN_RXON_TIMING;
642 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
643 REPLY_WIPAN_RXON_ASSOC;
644 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
645 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
646 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
647 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
648 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
649 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
650 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
651
652 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
653 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
654 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
655 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
656 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
657 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
658 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
659 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
660
661 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
662 }
663
664 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
665 {
666 struct iwl_ct_kill_config cmd;
667 struct iwl_ct_kill_throttling_config adv_cmd;
668 int ret = 0;
669
670 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
671 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
672
673 priv->thermal_throttle.ct_kill_toggle = false;
674
675 if (priv->lib->support_ct_kill_exit) {
676 adv_cmd.critical_temperature_enter =
677 cpu_to_le32(priv->hw_params.ct_kill_threshold);
678 adv_cmd.critical_temperature_exit =
679 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
680
681 ret = iwl_dvm_send_cmd_pdu(priv,
682 REPLY_CT_KILL_CONFIG_CMD,
683 0, sizeof(adv_cmd), &adv_cmd);
684 if (ret)
685 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
686 else
687 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
688 "succeeded, critical temperature enter is %d,"
689 "exit is %d\n",
690 priv->hw_params.ct_kill_threshold,
691 priv->hw_params.ct_kill_exit_threshold);
692 } else {
693 cmd.critical_temperature_R =
694 cpu_to_le32(priv->hw_params.ct_kill_threshold);
695
696 ret = iwl_dvm_send_cmd_pdu(priv,
697 REPLY_CT_KILL_CONFIG_CMD,
698 0, sizeof(cmd), &cmd);
699 if (ret)
700 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
701 else
702 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
703 "succeeded, "
704 "critical temperature is %d\n",
705 priv->hw_params.ct_kill_threshold);
706 }
707 }
708
709 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
710 {
711 struct iwl_calib_cfg_cmd calib_cfg_cmd;
712 struct iwl_host_cmd cmd = {
713 .id = CALIBRATION_CFG_CMD,
714 .len = { sizeof(struct iwl_calib_cfg_cmd), },
715 .data = { &calib_cfg_cmd, },
716 };
717
718 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
719 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
720 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
721
722 return iwl_dvm_send_cmd(priv, &cmd);
723 }
724
725
726 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
727 {
728 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
729 .valid = cpu_to_le32(valid_tx_ant),
730 };
731
732 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
733 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
734 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
735 sizeof(struct iwl_tx_ant_config_cmd),
736 &tx_ant_cmd);
737 } else {
738 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
739 return -EOPNOTSUPP;
740 }
741 }
742
743 static void iwl_send_bt_config(struct iwl_priv *priv)
744 {
745 struct iwl_bt_cmd bt_cmd = {
746 .lead_time = BT_LEAD_TIME_DEF,
747 .max_kill = BT_MAX_KILL_DEF,
748 .kill_ack_mask = 0,
749 .kill_cts_mask = 0,
750 };
751
752 if (!iwlwifi_mod_params.bt_coex_active)
753 bt_cmd.flags = BT_COEX_DISABLE;
754 else
755 bt_cmd.flags = BT_COEX_ENABLE;
756
757 priv->bt_enable_flag = bt_cmd.flags;
758 IWL_DEBUG_INFO(priv, "BT coex %s\n",
759 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
760
761 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
762 0, sizeof(struct iwl_bt_cmd), &bt_cmd))
763 IWL_ERR(priv, "failed to send BT Coex Config\n");
764 }
765
766 /**
767 * iwl_alive_start - called after REPLY_ALIVE notification received
768 * from protocol/runtime uCode (initialization uCode's
769 * Alive gets handled by iwl_init_alive_start()).
770 */
771 int iwl_alive_start(struct iwl_priv *priv)
772 {
773 int ret = 0;
774 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
775
776 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
777
778 /* After the ALIVE response, we can send host commands to the uCode */
779 set_bit(STATUS_ALIVE, &priv->status);
780
781 if (iwl_is_rfkill(priv))
782 return -ERFKILL;
783
784 if (priv->event_log.ucode_trace) {
785 /* start collecting data now */
786 mod_timer(&priv->ucode_trace, jiffies);
787 }
788
789 /* download priority table before any calibration request */
790 if (priv->lib->bt_params &&
791 priv->lib->bt_params->advanced_bt_coexist) {
792 /* Configure Bluetooth device coexistence support */
793 if (priv->lib->bt_params->bt_sco_disable)
794 priv->bt_enable_pspoll = false;
795 else
796 priv->bt_enable_pspoll = true;
797
798 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
799 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
800 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
801 iwlagn_send_advance_bt_config(priv);
802 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
803 priv->cur_rssi_ctx = NULL;
804
805 iwl_send_prio_tbl(priv);
806
807 /* FIXME: w/a to force change uCode BT state machine */
808 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
809 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
810 if (ret)
811 return ret;
812 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
813 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
814 if (ret)
815 return ret;
816 } else if (priv->lib->bt_params) {
817 /*
818 * default is 2-wire BT coexexistence support
819 */
820 iwl_send_bt_config(priv);
821 }
822
823 /*
824 * Perform runtime calibrations, including DC calibration.
825 */
826 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
827
828 ieee80211_wake_queues(priv->hw);
829
830 /* Configure Tx antenna selection based on H/W config */
831 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
832
833 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
834 struct iwl_rxon_cmd *active_rxon =
835 (struct iwl_rxon_cmd *)&ctx->active;
836 /* apply any changes in staging */
837 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
838 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
839 } else {
840 struct iwl_rxon_context *tmp;
841 /* Initialize our rx_config data */
842 for_each_context(priv, tmp)
843 iwl_connection_init_rx_config(priv, tmp);
844
845 iwlagn_set_rxon_chain(priv, ctx);
846 }
847
848 if (!priv->wowlan) {
849 /* WoWLAN ucode will not reply in the same way, skip it */
850 iwl_reset_run_time_calib(priv);
851 }
852
853 set_bit(STATUS_READY, &priv->status);
854
855 /* Configure the adapter for unassociated operation */
856 ret = iwlagn_commit_rxon(priv, ctx);
857 if (ret)
858 return ret;
859
860 /* At this point, the NIC is initialized and operational */
861 iwl_rf_kill_ct_config(priv);
862
863 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
864
865 return iwl_power_update_mode(priv, true);
866 }
867
868 /**
869 * iwl_clear_driver_stations - clear knowledge of all stations from driver
870 * @priv: iwl priv struct
871 *
872 * This is called during iwl_down() to make sure that in the case
873 * we're coming there from a hardware restart mac80211 will be
874 * able to reconfigure stations -- if we're getting there in the
875 * normal down flow then the stations will already be cleared.
876 */
877 static void iwl_clear_driver_stations(struct iwl_priv *priv)
878 {
879 struct iwl_rxon_context *ctx;
880
881 spin_lock_bh(&priv->sta_lock);
882 memset(priv->stations, 0, sizeof(priv->stations));
883 priv->num_stations = 0;
884
885 priv->ucode_key_table = 0;
886
887 for_each_context(priv, ctx) {
888 /*
889 * Remove all key information that is not stored as part
890 * of station information since mac80211 may not have had
891 * a chance to remove all the keys. When device is
892 * reconfigured by mac80211 after an error all keys will
893 * be reconfigured.
894 */
895 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
896 ctx->key_mapping_keys = 0;
897 }
898
899 spin_unlock_bh(&priv->sta_lock);
900 }
901
902 void iwl_down(struct iwl_priv *priv)
903 {
904 int exit_pending;
905
906 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
907
908 lockdep_assert_held(&priv->mutex);
909
910 iwl_scan_cancel_timeout(priv, 200);
911
912 exit_pending =
913 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
914
915 iwl_clear_ucode_stations(priv, NULL);
916 iwl_dealloc_bcast_stations(priv);
917 iwl_clear_driver_stations(priv);
918
919 /* reset BT coex data */
920 priv->bt_status = 0;
921 priv->cur_rssi_ctx = NULL;
922 priv->bt_is_sco = 0;
923 if (priv->lib->bt_params)
924 priv->bt_traffic_load =
925 priv->lib->bt_params->bt_init_traffic_load;
926 else
927 priv->bt_traffic_load = 0;
928 priv->bt_full_concurrent = false;
929 priv->bt_ci_compliance = 0;
930
931 /* Wipe out the EXIT_PENDING status bit if we are not actually
932 * exiting the module */
933 if (!exit_pending)
934 clear_bit(STATUS_EXIT_PENDING, &priv->status);
935
936 if (priv->mac80211_registered)
937 ieee80211_stop_queues(priv->hw);
938
939 priv->ucode_loaded = false;
940 iwl_trans_stop_device(priv->trans);
941
942 /* Set num_aux_in_flight must be done after the transport is stopped */
943 atomic_set(&priv->num_aux_in_flight, 0);
944
945 /* Clear out all status bits but a few that are stable across reset */
946 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
947 STATUS_RF_KILL_HW |
948 test_bit(STATUS_FW_ERROR, &priv->status) <<
949 STATUS_FW_ERROR |
950 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
951 STATUS_EXIT_PENDING;
952
953 dev_kfree_skb(priv->beacon_skb);
954 priv->beacon_skb = NULL;
955 }
956
957 /*****************************************************************************
958 *
959 * Workqueue callbacks
960 *
961 *****************************************************************************/
962
963 static void iwl_bg_run_time_calib_work(struct work_struct *work)
964 {
965 struct iwl_priv *priv = container_of(work, struct iwl_priv,
966 run_time_calib_work);
967
968 mutex_lock(&priv->mutex);
969
970 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
971 test_bit(STATUS_SCANNING, &priv->status)) {
972 mutex_unlock(&priv->mutex);
973 return;
974 }
975
976 if (priv->start_calib) {
977 iwl_chain_noise_calibration(priv);
978 iwl_sensitivity_calibration(priv);
979 }
980
981 mutex_unlock(&priv->mutex);
982 }
983
984 void iwlagn_prepare_restart(struct iwl_priv *priv)
985 {
986 bool bt_full_concurrent;
987 u8 bt_ci_compliance;
988 u8 bt_load;
989 u8 bt_status;
990 bool bt_is_sco;
991 int i;
992
993 lockdep_assert_held(&priv->mutex);
994
995 priv->is_open = 0;
996
997 /*
998 * __iwl_down() will clear the BT status variables,
999 * which is correct, but when we restart we really
1000 * want to keep them so restore them afterwards.
1001 *
1002 * The restart process will later pick them up and
1003 * re-configure the hw when we reconfigure the BT
1004 * command.
1005 */
1006 bt_full_concurrent = priv->bt_full_concurrent;
1007 bt_ci_compliance = priv->bt_ci_compliance;
1008 bt_load = priv->bt_traffic_load;
1009 bt_status = priv->bt_status;
1010 bt_is_sco = priv->bt_is_sco;
1011
1012 iwl_down(priv);
1013
1014 priv->bt_full_concurrent = bt_full_concurrent;
1015 priv->bt_ci_compliance = bt_ci_compliance;
1016 priv->bt_traffic_load = bt_load;
1017 priv->bt_status = bt_status;
1018 priv->bt_is_sco = bt_is_sco;
1019
1020 /* reset aggregation queues */
1021 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1022 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1023 /* and stop counts */
1024 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1025 atomic_set(&priv->queue_stop_count[i], 0);
1026
1027 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1028 }
1029
1030 static void iwl_bg_restart(struct work_struct *data)
1031 {
1032 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1033
1034 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1035 return;
1036
1037 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1038 mutex_lock(&priv->mutex);
1039 iwlagn_prepare_restart(priv);
1040 mutex_unlock(&priv->mutex);
1041 iwl_cancel_deferred_work(priv);
1042 if (priv->mac80211_registered)
1043 ieee80211_restart_hw(priv->hw);
1044 else
1045 IWL_ERR(priv,
1046 "Cannot request restart before registering with mac80211\n");
1047 } else {
1048 WARN_ON(1);
1049 }
1050 }
1051
1052 /*****************************************************************************
1053 *
1054 * driver setup and teardown
1055 *
1056 *****************************************************************************/
1057
1058 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1059 {
1060 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0);
1061
1062 INIT_WORK(&priv->restart, iwl_bg_restart);
1063 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1064 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1065 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1066 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1067 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1068
1069 iwl_setup_scan_deferred_work(priv);
1070
1071 if (priv->lib->bt_params)
1072 iwlagn_bt_setup_deferred_work(priv);
1073
1074 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0);
1075
1076 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0);
1077 }
1078
1079 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1080 {
1081 if (priv->lib->bt_params)
1082 iwlagn_bt_cancel_deferred_work(priv);
1083
1084 cancel_work_sync(&priv->run_time_calib_work);
1085 cancel_work_sync(&priv->beacon_update);
1086
1087 iwl_cancel_scan_deferred_work(priv);
1088
1089 cancel_work_sync(&priv->bt_full_concurrency);
1090 cancel_work_sync(&priv->bt_runtime_config);
1091
1092 del_timer_sync(&priv->statistics_periodic);
1093 del_timer_sync(&priv->ucode_trace);
1094 }
1095
1096 static int iwl_init_drv(struct iwl_priv *priv)
1097 {
1098 spin_lock_init(&priv->sta_lock);
1099
1100 mutex_init(&priv->mutex);
1101
1102 INIT_LIST_HEAD(&priv->calib_results);
1103
1104 priv->band = NL80211_BAND_2GHZ;
1105
1106 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1107
1108 priv->iw_mode = NL80211_IFTYPE_STATION;
1109 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1110 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1111 priv->agg_tids_count = 0;
1112
1113 priv->rx_statistics_jiffies = jiffies;
1114
1115 /* Choose which receivers/antennas to use */
1116 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1117
1118 iwl_init_scan_params(priv);
1119
1120 /* init bt coex */
1121 if (priv->lib->bt_params &&
1122 priv->lib->bt_params->advanced_bt_coexist) {
1123 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1124 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1125 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1126 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1127 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1128 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1129 }
1130
1131 return 0;
1132 }
1133
1134 static void iwl_uninit_drv(struct iwl_priv *priv)
1135 {
1136 kfree(priv->scan_cmd);
1137 kfree(priv->beacon_cmd);
1138 kfree(rcu_dereference_raw(priv->noa_data));
1139 iwl_calib_free_results(priv);
1140 #ifdef CONFIG_IWLWIFI_DEBUGFS
1141 kfree(priv->wowlan_sram);
1142 #endif
1143 }
1144
1145 static void iwl_set_hw_params(struct iwl_priv *priv)
1146 {
1147 if (priv->cfg->ht_params)
1148 priv->hw_params.use_rts_for_aggregation =
1149 priv->cfg->ht_params->use_rts_for_aggregation;
1150
1151 /* Device-specific setup */
1152 priv->lib->set_hw_params(priv);
1153 }
1154
1155
1156
1157 /* show what optional capabilities we have */
1158 static void iwl_option_config(struct iwl_priv *priv)
1159 {
1160 #ifdef CONFIG_IWLWIFI_DEBUG
1161 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1162 #else
1163 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1164 #endif
1165
1166 #ifdef CONFIG_IWLWIFI_DEBUGFS
1167 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1168 #else
1169 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1170 #endif
1171
1172 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1173 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1174 #else
1175 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1176 #endif
1177 }
1178
1179 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1180 {
1181 struct iwl_nvm_data *data = priv->nvm_data;
1182
1183 if (data->sku_cap_11n_enable &&
1184 !priv->cfg->ht_params) {
1185 IWL_ERR(priv, "Invalid 11n configuration\n");
1186 return -EINVAL;
1187 }
1188
1189 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable &&
1190 !data->sku_cap_band_52ghz_enable) {
1191 IWL_ERR(priv, "Invalid device sku\n");
1192 return -EINVAL;
1193 }
1194
1195 IWL_DEBUG_INFO(priv,
1196 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1197 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled",
1198 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled",
1199 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1200
1201 priv->hw_params.tx_chains_num =
1202 num_of_ant(data->valid_tx_ant);
1203 if (priv->cfg->rx_with_siso_diversity)
1204 priv->hw_params.rx_chains_num = 1;
1205 else
1206 priv->hw_params.rx_chains_num =
1207 num_of_ant(data->valid_rx_ant);
1208
1209 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1210 data->valid_tx_ant,
1211 data->valid_rx_ant);
1212
1213 return 0;
1214 }
1215
1216 static int iwl_nvm_check_version(struct iwl_nvm_data *data,
1217 struct iwl_trans *trans)
1218 {
1219 if (data->nvm_version >= trans->cfg->nvm_ver ||
1220 data->calib_version >= trans->cfg->nvm_calib_ver) {
1221 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
1222 data->nvm_version, data->calib_version);
1223 return 0;
1224 }
1225
1226 IWL_ERR(trans,
1227 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
1228 data->nvm_version, trans->cfg->nvm_ver,
1229 data->calib_version, trans->cfg->nvm_calib_ver);
1230 return -EINVAL;
1231 }
1232
1233 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1234 const struct iwl_cfg *cfg,
1235 const struct iwl_fw *fw,
1236 struct dentry *dbgfs_dir)
1237 {
1238 struct iwl_priv *priv;
1239 struct ieee80211_hw *hw;
1240 struct iwl_op_mode *op_mode;
1241 u16 num_mac;
1242 u32 ucode_flags;
1243 struct iwl_trans_config trans_cfg = {};
1244 static const u8 no_reclaim_cmds[] = {
1245 REPLY_RX_PHY_CMD,
1246 REPLY_RX_MPDU_CMD,
1247 REPLY_COMPRESSED_BA,
1248 STATISTICS_NOTIFICATION,
1249 REPLY_TX,
1250 };
1251 int i;
1252
1253 /************************
1254 * 1. Allocating HW data
1255 ************************/
1256 hw = iwl_alloc_all();
1257 if (!hw) {
1258 pr_err("%s: Cannot allocate network device\n", trans->name);
1259 goto out;
1260 }
1261
1262 op_mode = hw->priv;
1263 op_mode->ops = &iwl_dvm_ops;
1264 priv = IWL_OP_MODE_GET_DVM(op_mode);
1265 priv->trans = trans;
1266 priv->dev = trans->dev;
1267 priv->cfg = cfg;
1268 priv->fw = fw;
1269
1270 switch (priv->trans->trans_cfg->device_family) {
1271 case IWL_DEVICE_FAMILY_1000:
1272 case IWL_DEVICE_FAMILY_100:
1273 priv->lib = &iwl_dvm_1000_cfg;
1274 break;
1275 case IWL_DEVICE_FAMILY_2000:
1276 priv->lib = &iwl_dvm_2000_cfg;
1277 break;
1278 case IWL_DEVICE_FAMILY_105:
1279 priv->lib = &iwl_dvm_105_cfg;
1280 break;
1281 case IWL_DEVICE_FAMILY_2030:
1282 case IWL_DEVICE_FAMILY_135:
1283 priv->lib = &iwl_dvm_2030_cfg;
1284 break;
1285 case IWL_DEVICE_FAMILY_5000:
1286 priv->lib = &iwl_dvm_5000_cfg;
1287 break;
1288 case IWL_DEVICE_FAMILY_5150:
1289 priv->lib = &iwl_dvm_5150_cfg;
1290 break;
1291 case IWL_DEVICE_FAMILY_6000:
1292 case IWL_DEVICE_FAMILY_6000i:
1293 priv->lib = &iwl_dvm_6000_cfg;
1294 break;
1295 case IWL_DEVICE_FAMILY_6005:
1296 priv->lib = &iwl_dvm_6005_cfg;
1297 break;
1298 case IWL_DEVICE_FAMILY_6050:
1299 case IWL_DEVICE_FAMILY_6150:
1300 priv->lib = &iwl_dvm_6050_cfg;
1301 break;
1302 case IWL_DEVICE_FAMILY_6030:
1303 priv->lib = &iwl_dvm_6030_cfg;
1304 break;
1305 default:
1306 break;
1307 }
1308
1309 if (WARN_ON(!priv->lib))
1310 goto out_free_hw;
1311
1312 /*
1313 * Populate the state variables that the transport layer needs
1314 * to know about.
1315 */
1316 trans_cfg.op_mode = op_mode;
1317 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1318 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1319
1320 switch (iwlwifi_mod_params.amsdu_size) {
1321 case IWL_AMSDU_DEF:
1322 case IWL_AMSDU_4K:
1323 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1324 break;
1325 case IWL_AMSDU_8K:
1326 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
1327 break;
1328 case IWL_AMSDU_12K:
1329 default:
1330 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1331 pr_err("Unsupported amsdu_size: %d\n",
1332 iwlwifi_mod_params.amsdu_size);
1333 }
1334
1335 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
1336
1337 trans_cfg.command_groups = iwl_dvm_groups;
1338 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups);
1339
1340 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1341 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
1342 driver_data[2]);
1343
1344 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1345 priv->trans->trans_cfg->base_params->num_of_queues);
1346
1347 ucode_flags = fw->ucode_capa.flags;
1348
1349 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1350 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1351 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1352 } else {
1353 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1354 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1355 }
1356
1357 /* Configure transport layer */
1358 iwl_trans_configure(priv->trans, &trans_cfg);
1359
1360 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1361 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1362 trans->command_groups = trans_cfg.command_groups;
1363 trans->command_groups_size = trans_cfg.command_groups_size;
1364
1365 /* At this point both hw and priv are allocated. */
1366
1367 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1368
1369 iwl_option_config(priv);
1370
1371 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1372
1373 /* is antenna coupling more than 35dB ? */
1374 priv->bt_ant_couple_ok =
1375 (iwlwifi_mod_params.antenna_coupling >
1376 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1377 true : false;
1378
1379 /* bt channel inhibition enabled*/
1380 priv->bt_ch_announce = true;
1381 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1382 (priv->bt_ch_announce) ? "On" : "Off");
1383
1384 /* these spin locks will be used in apm_ops.init and EEPROM access
1385 * we should init now
1386 */
1387 spin_lock_init(&priv->statistics.lock);
1388
1389 /***********************
1390 * 2. Read REV register
1391 ***********************/
1392 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1393 priv->trans->name, priv->trans->hw_rev);
1394
1395 if (iwl_trans_start_hw(priv->trans))
1396 goto out_free_hw;
1397
1398 /* Read the EEPROM */
1399 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1400 &priv->eeprom_blob_size)) {
1401 IWL_ERR(priv, "Unable to init EEPROM\n");
1402 goto out_free_hw;
1403 }
1404
1405 /* Reset chip to save power until we load uCode during "up". */
1406 iwl_trans_stop_device(priv->trans);
1407
1408 priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg,
1409 priv->eeprom_blob,
1410 priv->eeprom_blob_size);
1411 if (!priv->nvm_data)
1412 goto out_free_eeprom_blob;
1413
1414 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1415 goto out_free_eeprom;
1416
1417 if (iwl_eeprom_init_hw_params(priv))
1418 goto out_free_eeprom;
1419
1420 /* extract MAC Address */
1421 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1422 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1423 priv->hw->wiphy->addresses = priv->addresses;
1424 priv->hw->wiphy->n_addresses = 1;
1425 num_mac = priv->nvm_data->n_hw_addrs;
1426 if (num_mac > 1) {
1427 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1428 ETH_ALEN);
1429 priv->addresses[1].addr[5]++;
1430 priv->hw->wiphy->n_addresses++;
1431 }
1432
1433 /************************
1434 * 4. Setup HW constants
1435 ************************/
1436 iwl_set_hw_params(priv);
1437
1438 if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1439 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1440 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1441 /*
1442 * if not PAN, then don't support P2P -- might be a uCode
1443 * packaging bug or due to the eeprom check above
1444 */
1445 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1446 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1447
1448 /* Configure transport layer again*/
1449 iwl_trans_configure(priv->trans, &trans_cfg);
1450 }
1451
1452 /*******************
1453 * 5. Setup priv
1454 *******************/
1455 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1456 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1457 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1458 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1459 i != IWL_IPAN_CMD_QUEUE_NUM)
1460 priv->queue_to_mac80211[i] = i;
1461 atomic_set(&priv->queue_stop_count[i], 0);
1462 }
1463
1464 if (iwl_init_drv(priv))
1465 goto out_free_eeprom;
1466
1467 /* At this point both hw and priv are initialized. */
1468
1469 /********************
1470 * 6. Setup services
1471 ********************/
1472 iwl_setup_deferred_work(priv);
1473 iwl_setup_rx_handlers(priv);
1474
1475 iwl_power_initialize(priv);
1476 iwl_tt_initialize(priv);
1477
1478 snprintf(priv->hw->wiphy->fw_version,
1479 sizeof(priv->hw->wiphy->fw_version),
1480 "%s", fw->fw_version);
1481
1482 priv->new_scan_threshold_behaviour =
1483 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1484
1485 priv->phy_calib_chain_noise_reset_cmd =
1486 fw->ucode_capa.standard_phy_calibration_size;
1487 priv->phy_calib_chain_noise_gain_cmd =
1488 fw->ucode_capa.standard_phy_calibration_size + 1;
1489
1490 /* initialize all valid contexts */
1491 iwl_init_context(priv, ucode_flags);
1492
1493 /**************************************************
1494 * This is still part of probe() in a sense...
1495 *
1496 * 7. Setup and register with mac80211 and debugfs
1497 **************************************************/
1498 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1499 goto out_destroy_workqueue;
1500
1501 iwl_dbgfs_register(priv, dbgfs_dir);
1502
1503 return op_mode;
1504
1505 out_destroy_workqueue:
1506 iwl_tt_exit(priv);
1507 iwl_cancel_deferred_work(priv);
1508 destroy_workqueue(priv->workqueue);
1509 priv->workqueue = NULL;
1510 iwl_uninit_drv(priv);
1511 out_free_eeprom_blob:
1512 kfree(priv->eeprom_blob);
1513 out_free_eeprom:
1514 kfree(priv->nvm_data);
1515 out_free_hw:
1516 ieee80211_free_hw(priv->hw);
1517 out:
1518 op_mode = NULL;
1519 return op_mode;
1520 }
1521
1522 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1523 {
1524 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1525
1526 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1527
1528 iwlagn_mac_unregister(priv);
1529
1530 iwl_tt_exit(priv);
1531
1532 kfree(priv->eeprom_blob);
1533 kfree(priv->nvm_data);
1534
1535 /*netif_stop_queue(dev); */
1536 flush_workqueue(priv->workqueue);
1537
1538 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1539 * priv->workqueue... so we can't take down the workqueue
1540 * until now... */
1541 destroy_workqueue(priv->workqueue);
1542 priv->workqueue = NULL;
1543
1544 iwl_uninit_drv(priv);
1545
1546 dev_kfree_skb(priv->beacon_skb);
1547
1548 iwl_trans_op_mode_leave(priv->trans);
1549 ieee80211_free_hw(priv->hw);
1550 }
1551
1552 static const char * const desc_lookup_text[] = {
1553 "OK",
1554 "FAIL",
1555 "BAD_PARAM",
1556 "BAD_CHECKSUM",
1557 "NMI_INTERRUPT_WDG",
1558 "SYSASSERT",
1559 "FATAL_ERROR",
1560 "BAD_COMMAND",
1561 "HW_ERROR_TUNE_LOCK",
1562 "HW_ERROR_TEMPERATURE",
1563 "ILLEGAL_CHAN_FREQ",
1564 "VCC_NOT_STABLE",
1565 "FH_ERROR",
1566 "NMI_INTERRUPT_HOST",
1567 "NMI_INTERRUPT_ACTION_PT",
1568 "NMI_INTERRUPT_UNKNOWN",
1569 "UCODE_VERSION_MISMATCH",
1570 "HW_ERROR_ABS_LOCK",
1571 "HW_ERROR_CAL_LOCK_FAIL",
1572 "NMI_INTERRUPT_INST_ACTION_PT",
1573 "NMI_INTERRUPT_DATA_ACTION_PT",
1574 "NMI_TRM_HW_ER",
1575 "NMI_INTERRUPT_TRM",
1576 "NMI_INTERRUPT_BREAK_POINT",
1577 "DEBUG_0",
1578 "DEBUG_1",
1579 "DEBUG_2",
1580 "DEBUG_3",
1581 };
1582
1583 static struct { char *name; u8 num; } advanced_lookup[] = {
1584 { "NMI_INTERRUPT_WDG", 0x34 },
1585 { "SYSASSERT", 0x35 },
1586 { "UCODE_VERSION_MISMATCH", 0x37 },
1587 { "BAD_COMMAND", 0x38 },
1588 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1589 { "FATAL_ERROR", 0x3D },
1590 { "NMI_TRM_HW_ERR", 0x46 },
1591 { "NMI_INTERRUPT_TRM", 0x4C },
1592 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1593 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1594 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1595 { "NMI_INTERRUPT_HOST", 0x66 },
1596 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1597 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1598 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1599 { "ADVANCED_SYSASSERT", 0 },
1600 };
1601
1602 static const char *desc_lookup(u32 num)
1603 {
1604 int i;
1605 int max = ARRAY_SIZE(desc_lookup_text);
1606
1607 if (num < max)
1608 return desc_lookup_text[num];
1609
1610 max = ARRAY_SIZE(advanced_lookup) - 1;
1611 for (i = 0; i < max; i++) {
1612 if (advanced_lookup[i].num == num)
1613 break;
1614 }
1615 return advanced_lookup[i].name;
1616 }
1617
1618 #define ERROR_START_OFFSET (1 * sizeof(u32))
1619 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1620
1621 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1622 {
1623 struct iwl_trans *trans = priv->trans;
1624 u32 base;
1625 struct iwl_error_event_table table;
1626
1627 base = priv->device_pointers.error_event_table;
1628 if (priv->cur_ucode == IWL_UCODE_INIT) {
1629 if (!base)
1630 base = priv->fw->init_errlog_ptr;
1631 } else {
1632 if (!base)
1633 base = priv->fw->inst_errlog_ptr;
1634 }
1635
1636 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1637 IWL_ERR(priv,
1638 "Not valid error log pointer 0x%08X for %s uCode\n",
1639 base,
1640 (priv->cur_ucode == IWL_UCODE_INIT)
1641 ? "Init" : "RT");
1642 return;
1643 }
1644
1645 /*TODO: Update dbgfs with ISR error stats obtained below */
1646 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1647
1648 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1649 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1650 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1651 priv->status, table.valid);
1652 }
1653
1654 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1655 desc_lookup(table.error_id));
1656 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1657 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1658 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1659 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1660 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1661 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1662 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1663 IWL_ERR(priv, "0x%08X | line\n", table.line);
1664 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1665 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1666 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1667 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1668 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1669 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1670 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1671 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1672 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1673 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1674 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1675 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1676 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1677 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1678 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1679 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1680 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1681 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1682 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1683 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1684 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1685 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1686 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1687 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1688 }
1689
1690 #define EVENT_START_OFFSET (4 * sizeof(u32))
1691
1692 /**
1693 * iwl_print_event_log - Dump error event log to syslog
1694 *
1695 */
1696 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1697 u32 num_events, u32 mode,
1698 int pos, char **buf, size_t bufsz)
1699 {
1700 u32 i;
1701 u32 base; /* SRAM byte address of event log header */
1702 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1703 u32 ptr; /* SRAM byte address of log data */
1704 u32 ev, time, data; /* event log data */
1705 unsigned long reg_flags;
1706
1707 struct iwl_trans *trans = priv->trans;
1708
1709 if (num_events == 0)
1710 return pos;
1711
1712 base = priv->device_pointers.log_event_table;
1713 if (priv->cur_ucode == IWL_UCODE_INIT) {
1714 if (!base)
1715 base = priv->fw->init_evtlog_ptr;
1716 } else {
1717 if (!base)
1718 base = priv->fw->inst_evtlog_ptr;
1719 }
1720
1721 if (mode == 0)
1722 event_size = 2 * sizeof(u32);
1723 else
1724 event_size = 3 * sizeof(u32);
1725
1726 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1727
1728 /* Make sure device is powered up for SRAM reads */
1729 if (!iwl_trans_grab_nic_access(trans, &reg_flags))
1730 return pos;
1731
1732 /* Set starting address; reads will auto-increment */
1733 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1734
1735 /* "time" is actually "data" for mode 0 (no timestamp).
1736 * place event id # at far right for easier visual parsing. */
1737 for (i = 0; i < num_events; i++) {
1738 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1739 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1740 if (mode == 0) {
1741 /* data, ev */
1742 if (bufsz) {
1743 pos += scnprintf(*buf + pos, bufsz - pos,
1744 "EVT_LOG:0x%08x:%04u\n",
1745 time, ev);
1746 } else {
1747 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1748 time, ev);
1749 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1750 time, ev);
1751 }
1752 } else {
1753 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1754 if (bufsz) {
1755 pos += scnprintf(*buf + pos, bufsz - pos,
1756 "EVT_LOGT:%010u:0x%08x:%04u\n",
1757 time, data, ev);
1758 } else {
1759 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1760 time, data, ev);
1761 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1762 data, ev);
1763 }
1764 }
1765 }
1766
1767 /* Allow device to power down */
1768 iwl_trans_release_nic_access(trans, &reg_flags);
1769 return pos;
1770 }
1771
1772 /**
1773 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1774 */
1775 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1776 u32 num_wraps, u32 next_entry,
1777 u32 size, u32 mode,
1778 int pos, char **buf, size_t bufsz)
1779 {
1780 /*
1781 * display the newest DEFAULT_LOG_ENTRIES entries
1782 * i.e the entries just before the next ont that uCode would fill.
1783 */
1784 if (num_wraps) {
1785 if (next_entry < size) {
1786 pos = iwl_print_event_log(priv,
1787 capacity - (size - next_entry),
1788 size - next_entry, mode,
1789 pos, buf, bufsz);
1790 pos = iwl_print_event_log(priv, 0,
1791 next_entry, mode,
1792 pos, buf, bufsz);
1793 } else
1794 pos = iwl_print_event_log(priv, next_entry - size,
1795 size, mode, pos, buf, bufsz);
1796 } else {
1797 if (next_entry < size) {
1798 pos = iwl_print_event_log(priv, 0, next_entry,
1799 mode, pos, buf, bufsz);
1800 } else {
1801 pos = iwl_print_event_log(priv, next_entry - size,
1802 size, mode, pos, buf, bufsz);
1803 }
1804 }
1805 return pos;
1806 }
1807
1808 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1809
1810 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1811 char **buf)
1812 {
1813 u32 base; /* SRAM byte address of event log header */
1814 u32 capacity; /* event log capacity in # entries */
1815 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1816 u32 num_wraps; /* # times uCode wrapped to top of log */
1817 u32 next_entry; /* index of next entry to be written by uCode */
1818 u32 size; /* # entries that we'll print */
1819 u32 logsize;
1820 int pos = 0;
1821 size_t bufsz = 0;
1822 struct iwl_trans *trans = priv->trans;
1823
1824 base = priv->device_pointers.log_event_table;
1825 if (priv->cur_ucode == IWL_UCODE_INIT) {
1826 logsize = priv->fw->init_evtlog_size;
1827 if (!base)
1828 base = priv->fw->init_evtlog_ptr;
1829 } else {
1830 logsize = priv->fw->inst_evtlog_size;
1831 if (!base)
1832 base = priv->fw->inst_evtlog_ptr;
1833 }
1834
1835 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1836 IWL_ERR(priv,
1837 "Invalid event log pointer 0x%08X for %s uCode\n",
1838 base,
1839 (priv->cur_ucode == IWL_UCODE_INIT)
1840 ? "Init" : "RT");
1841 return -EINVAL;
1842 }
1843
1844 /* event log header */
1845 capacity = iwl_trans_read_mem32(trans, base);
1846 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1847 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1848 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1849
1850 if (capacity > logsize) {
1851 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1852 "entries\n", capacity, logsize);
1853 capacity = logsize;
1854 }
1855
1856 if (next_entry > logsize) {
1857 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1858 next_entry, logsize);
1859 next_entry = logsize;
1860 }
1861
1862 size = num_wraps ? capacity : next_entry;
1863
1864 /* bail out if nothing in log */
1865 if (size == 0) {
1866 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1867 return pos;
1868 }
1869
1870 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log)
1871 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1872 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1873 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1874 size);
1875
1876 #ifdef CONFIG_IWLWIFI_DEBUG
1877 if (buf) {
1878 if (full_log)
1879 bufsz = capacity * 48;
1880 else
1881 bufsz = size * 48;
1882 *buf = kmalloc(bufsz, GFP_KERNEL);
1883 if (!*buf)
1884 return -ENOMEM;
1885 }
1886 if (iwl_have_debug_level(IWL_DL_FW) || full_log) {
1887 /*
1888 * if uCode has wrapped back to top of log,
1889 * start at the oldest entry,
1890 * i.e the next one that uCode would fill.
1891 */
1892 if (num_wraps)
1893 pos = iwl_print_event_log(priv, next_entry,
1894 capacity - next_entry, mode,
1895 pos, buf, bufsz);
1896 /* (then/else) start at top of log */
1897 pos = iwl_print_event_log(priv, 0,
1898 next_entry, mode, pos, buf, bufsz);
1899 } else
1900 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1901 next_entry, size, mode,
1902 pos, buf, bufsz);
1903 #else
1904 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1905 next_entry, size, mode,
1906 pos, buf, bufsz);
1907 #endif
1908 return pos;
1909 }
1910
1911 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1912 {
1913 unsigned int reload_msec;
1914 unsigned long reload_jiffies;
1915
1916 if (iwl_have_debug_level(IWL_DL_FW))
1917 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1918
1919 /* uCode is no longer loaded. */
1920 priv->ucode_loaded = false;
1921
1922 /* Set the FW error flag -- cleared on iwl_down */
1923 set_bit(STATUS_FW_ERROR, &priv->status);
1924
1925 iwl_abort_notification_waits(&priv->notif_wait);
1926
1927 /* Keep the restart process from trying to send host
1928 * commands by clearing the ready bit */
1929 clear_bit(STATUS_READY, &priv->status);
1930
1931 if (!ondemand) {
1932 /*
1933 * If firmware keep reloading, then it indicate something
1934 * serious wrong and firmware having problem to recover
1935 * from it. Instead of keep trying which will fill the syslog
1936 * and hang the system, let's just stop it
1937 */
1938 reload_jiffies = jiffies;
1939 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1940 (long) priv->reload_jiffies);
1941 priv->reload_jiffies = reload_jiffies;
1942 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1943 priv->reload_count++;
1944 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1945 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1946 return;
1947 }
1948 } else
1949 priv->reload_count = 0;
1950 }
1951
1952 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1953 if (iwlwifi_mod_params.fw_restart) {
1954 IWL_DEBUG_FW(priv,
1955 "Restarting adapter due to uCode error.\n");
1956 queue_work(priv->workqueue, &priv->restart);
1957 } else
1958 IWL_DEBUG_FW(priv,
1959 "Detected FW error, but not restarting\n");
1960 }
1961 }
1962
1963 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1964 {
1965 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1966
1967 IWL_ERR(priv, "Loaded firmware version: %s\n",
1968 priv->fw->fw_version);
1969
1970 iwl_dump_nic_error_log(priv);
1971 iwl_dump_nic_event_log(priv, false, NULL);
1972
1973 iwlagn_fw_error(priv, false);
1974 }
1975
1976 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1977 {
1978 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1979
1980 if (!iwl_check_for_ct_kill(priv)) {
1981 IWL_ERR(priv, "Restarting adapter queue is full\n");
1982 iwlagn_fw_error(priv, false);
1983 }
1984 }
1985
1986 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1987
1988 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1989 {
1990 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1991
1992 /* SKU Control */
1993 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1994 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1995 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1996 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1997 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1998 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1999 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
2000
2001 /* write radio config values to register */
2002 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
2003 u32 reg_val =
2004 priv->nvm_data->radio_cfg_type <<
2005 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2006 priv->nvm_data->radio_cfg_step <<
2007 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2008 priv->nvm_data->radio_cfg_dash <<
2009 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2010
2011 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2012 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2013 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2014 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
2015 reg_val);
2016
2017 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2018 priv->nvm_data->radio_cfg_type,
2019 priv->nvm_data->radio_cfg_step,
2020 priv->nvm_data->radio_cfg_dash);
2021 } else {
2022 WARN_ON(1);
2023 }
2024
2025 /* set CSR_HW_CONFIG_REG for uCode use */
2026 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2027 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2028 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2029
2030 /* W/A : NIC is stuck in a reset state after Early PCIe power off
2031 * (PCIe power is lost before PERST# is asserted),
2032 * causing ME FW to lose ownership and not being able to obtain it back.
2033 */
2034 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2035 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2036 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2037
2038 if (priv->lib->nic_config)
2039 priv->lib->nic_config(priv);
2040 }
2041
2042 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2043 {
2044 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2045
2046 clear_bit(STATUS_READY, &priv->status);
2047 IWL_ERR(priv, "RF is used by WiMAX\n");
2048 }
2049
2050 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2051 {
2052 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2053 int mq = priv->queue_to_mac80211[queue];
2054
2055 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2056 return;
2057
2058 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2059 IWL_DEBUG_TX_QUEUES(priv,
2060 "queue %d (mac80211 %d) already stopped\n",
2061 queue, mq);
2062 return;
2063 }
2064
2065 set_bit(mq, &priv->transport_queue_stop);
2066 ieee80211_stop_queue(priv->hw, mq);
2067 }
2068
2069 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2070 {
2071 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2072 int mq = priv->queue_to_mac80211[queue];
2073
2074 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2075 return;
2076
2077 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2078 IWL_DEBUG_TX_QUEUES(priv,
2079 "queue %d (mac80211 %d) already awake\n",
2080 queue, mq);
2081 return;
2082 }
2083
2084 clear_bit(mq, &priv->transport_queue_stop);
2085
2086 if (!priv->passive_no_rx)
2087 ieee80211_wake_queue(priv->hw, mq);
2088 }
2089
2090 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2091 {
2092 int mq;
2093
2094 if (!priv->passive_no_rx)
2095 return;
2096
2097 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2098 if (!test_bit(mq, &priv->transport_queue_stop)) {
2099 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
2100 ieee80211_wake_queue(priv->hw, mq);
2101 } else {
2102 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2103 }
2104 }
2105
2106 priv->passive_no_rx = false;
2107 }
2108
2109 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2110 {
2111 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2112 struct ieee80211_tx_info *info;
2113
2114 info = IEEE80211_SKB_CB(skb);
2115 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2116 ieee80211_free_txskb(priv->hw, skb);
2117 }
2118
2119 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2120 {
2121 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2122
2123 if (state)
2124 set_bit(STATUS_RF_KILL_HW, &priv->status);
2125 else
2126 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2127
2128 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2129
2130 return false;
2131 }
2132
2133 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2134 .start = iwl_op_mode_dvm_start,
2135 .stop = iwl_op_mode_dvm_stop,
2136 .rx = iwl_rx_dispatch,
2137 .queue_full = iwl_stop_sw_queue,
2138 .queue_not_full = iwl_wake_sw_queue,
2139 .hw_rf_kill = iwl_set_hw_rfkill_state,
2140 .free_skb = iwl_free_skb,
2141 .nic_error = iwl_nic_error,
2142 .cmd_queue_full = iwl_cmd_queue_full,
2143 .nic_config = iwl_nic_config,
2144 .wimax_active = iwl_wimax_active,
2145 };
2146
2147 /*****************************************************************************
2148 *
2149 * driver and module entry point
2150 *
2151 *****************************************************************************/
2152 static int __init iwl_init(void)
2153 {
2154
2155 int ret;
2156
2157 ret = iwlagn_rate_control_register();
2158 if (ret) {
2159 pr_err("Unable to register rate control algorithm: %d\n", ret);
2160 return ret;
2161 }
2162
2163 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2164 if (ret) {
2165 pr_err("Unable to register op_mode: %d\n", ret);
2166 iwlagn_rate_control_unregister();
2167 }
2168
2169 return ret;
2170 }
2171 module_init(iwl_init);
2172
2173 static void __exit iwl_exit(void)
2174 {
2175 iwl_opmode_deregister("iwldvm");
2176 iwlagn_rate_control_unregister();
2177 }
2178 module_exit(iwl_exit);
Linux with added FPC-III support