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