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iwlwifi: handle RFKILL logic in the transport layer
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / dvm / main.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom-read.h"
48 #include "iwl-eeprom-parse.h"
49 #include "iwl-io.h"
50 #include "iwl-trans.h"
51 #include "iwl-op-mode.h"
52 #include "iwl-drv.h"
53 #include "iwl-modparams.h"
54 #include "iwl-prph.h"
55
56 #include "dev.h"
57 #include "calib.h"
58 #include "agn.h"
59
60
61 /******************************************************************************
62 *
63 * module boiler plate
64 *
65 ******************************************************************************/
66
67 /*
68 * module name, copyright, version, etc.
69 */
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #define DRV_VERSION IWLWIFI_VERSION VD
79
80
81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
82 MODULE_VERSION(DRV_VERSION);
83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
84 MODULE_LICENSE("GPL");
85
86 static const struct iwl_op_mode_ops iwl_dvm_ops;
87
88 void iwl_update_chain_flags(struct iwl_priv *priv)
89 {
90 struct iwl_rxon_context *ctx;
91
92 for_each_context(priv, ctx) {
93 iwlagn_set_rxon_chain(priv, ctx);
94 if (ctx->active.rx_chain != ctx->staging.rx_chain)
95 iwlagn_commit_rxon(priv, ctx);
96 }
97 }
98
99 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
100 static void iwl_set_beacon_tim(struct iwl_priv *priv,
101 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
102 u8 *beacon, u32 frame_size)
103 {
104 u16 tim_idx;
105 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
106
107 /*
108 * The index is relative to frame start but we start looking at the
109 * variable-length part of the beacon.
110 */
111 tim_idx = mgmt->u.beacon.variable - beacon;
112
113 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
114 while ((tim_idx < (frame_size - 2)) &&
115 (beacon[tim_idx] != WLAN_EID_TIM))
116 tim_idx += beacon[tim_idx+1] + 2;
117
118 /* If TIM field was found, set variables */
119 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
120 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
121 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
122 } else
123 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
124 }
125
126 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
127 {
128 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
129 struct iwl_host_cmd cmd = {
130 .id = REPLY_TX_BEACON,
131 .flags = CMD_SYNC,
132 };
133 struct ieee80211_tx_info *info;
134 u32 frame_size;
135 u32 rate_flags;
136 u32 rate;
137
138 /*
139 * We have to set up the TX command, the TX Beacon command, and the
140 * beacon contents.
141 */
142
143 lockdep_assert_held(&priv->mutex);
144
145 if (!priv->beacon_ctx) {
146 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
147 return 0;
148 }
149
150 if (WARN_ON(!priv->beacon_skb))
151 return -EINVAL;
152
153 /* Allocate beacon command */
154 if (!priv->beacon_cmd)
155 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
156 tx_beacon_cmd = priv->beacon_cmd;
157 if (!tx_beacon_cmd)
158 return -ENOMEM;
159
160 frame_size = priv->beacon_skb->len;
161
162 /* Set up TX command fields */
163 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
164 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
165 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
166 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
167 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
168
169 /* Set up TX beacon command fields */
170 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
171 frame_size);
172
173 /* Set up packet rate and flags */
174 info = IEEE80211_SKB_CB(priv->beacon_skb);
175
176 /*
177 * Let's set up the rate at least somewhat correctly;
178 * it will currently not actually be used by the uCode,
179 * it uses the broadcast station's rate instead.
180 */
181 if (info->control.rates[0].idx < 0 ||
182 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
183 rate = 0;
184 else
185 rate = info->control.rates[0].idx;
186
187 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
188 priv->eeprom_data->valid_tx_ant);
189 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
190
191 /* In mac80211, rates for 5 GHz start at 0 */
192 if (info->band == IEEE80211_BAND_5GHZ)
193 rate += IWL_FIRST_OFDM_RATE;
194 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
195 rate_flags |= RATE_MCS_CCK_MSK;
196
197 tx_beacon_cmd->tx.rate_n_flags =
198 iwl_hw_set_rate_n_flags(rate, rate_flags);
199
200 /* Submit command */
201 cmd.len[0] = sizeof(*tx_beacon_cmd);
202 cmd.data[0] = tx_beacon_cmd;
203 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
204 cmd.len[1] = frame_size;
205 cmd.data[1] = priv->beacon_skb->data;
206 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
207
208 return iwl_dvm_send_cmd(priv, &cmd);
209 }
210
211 static void iwl_bg_beacon_update(struct work_struct *work)
212 {
213 struct iwl_priv *priv =
214 container_of(work, struct iwl_priv, beacon_update);
215 struct sk_buff *beacon;
216
217 mutex_lock(&priv->mutex);
218 if (!priv->beacon_ctx) {
219 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
220 goto out;
221 }
222
223 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
224 /*
225 * The ucode will send beacon notifications even in
226 * IBSS mode, but we don't want to process them. But
227 * we need to defer the type check to here due to
228 * requiring locking around the beacon_ctx access.
229 */
230 goto out;
231 }
232
233 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
234 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
235 if (!beacon) {
236 IWL_ERR(priv, "update beacon failed -- keeping old\n");
237 goto out;
238 }
239
240 /* new beacon skb is allocated every time; dispose previous.*/
241 dev_kfree_skb(priv->beacon_skb);
242
243 priv->beacon_skb = beacon;
244
245 iwlagn_send_beacon_cmd(priv);
246 out:
247 mutex_unlock(&priv->mutex);
248 }
249
250 static void iwl_bg_bt_runtime_config(struct work_struct *work)
251 {
252 struct iwl_priv *priv =
253 container_of(work, struct iwl_priv, bt_runtime_config);
254
255 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
256 return;
257
258 /* dont send host command if rf-kill is on */
259 if (!iwl_is_ready_rf(priv))
260 return;
261 iwlagn_send_advance_bt_config(priv);
262 }
263
264 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
265 {
266 struct iwl_priv *priv =
267 container_of(work, struct iwl_priv, bt_full_concurrency);
268 struct iwl_rxon_context *ctx;
269
270 mutex_lock(&priv->mutex);
271
272 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
273 goto out;
274
275 /* dont send host command if rf-kill is on */
276 if (!iwl_is_ready_rf(priv))
277 goto out;
278
279 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
280 priv->bt_full_concurrent ?
281 "full concurrency" : "3-wire");
282
283 /*
284 * LQ & RXON updated cmds must be sent before BT Config cmd
285 * to avoid 3-wire collisions
286 */
287 for_each_context(priv, ctx) {
288 iwlagn_set_rxon_chain(priv, ctx);
289 iwlagn_commit_rxon(priv, ctx);
290 }
291
292 iwlagn_send_advance_bt_config(priv);
293 out:
294 mutex_unlock(&priv->mutex);
295 }
296
297 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
298 {
299 struct iwl_statistics_cmd statistics_cmd = {
300 .configuration_flags =
301 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
302 };
303
304 if (flags & CMD_ASYNC)
305 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
306 CMD_ASYNC,
307 sizeof(struct iwl_statistics_cmd),
308 &statistics_cmd);
309 else
310 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
311 CMD_SYNC,
312 sizeof(struct iwl_statistics_cmd),
313 &statistics_cmd);
314 }
315
316 /**
317 * iwl_bg_statistics_periodic - Timer callback to queue statistics
318 *
319 * This callback is provided in order to send a statistics request.
320 *
321 * This timer function is continually reset to execute within
322 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
323 * was received. We need to ensure we receive the statistics in order
324 * to update the temperature used for calibrating the TXPOWER.
325 */
326 static void iwl_bg_statistics_periodic(unsigned long data)
327 {
328 struct iwl_priv *priv = (struct iwl_priv *)data;
329
330 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
331 return;
332
333 /* dont send host command if rf-kill is on */
334 if (!iwl_is_ready_rf(priv))
335 return;
336
337 iwl_send_statistics_request(priv, CMD_ASYNC, false);
338 }
339
340
341 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
342 u32 start_idx, u32 num_events,
343 u32 capacity, u32 mode)
344 {
345 u32 i;
346 u32 ptr; /* SRAM byte address of log data */
347 u32 ev, time, data; /* event log data */
348 unsigned long reg_flags;
349
350 if (mode == 0)
351 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
352 else
353 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
354
355 /* Make sure device is powered up for SRAM reads */
356 spin_lock_irqsave(&priv->trans->reg_lock, reg_flags);
357 if (unlikely(!iwl_grab_nic_access(priv->trans))) {
358 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
359 return;
360 }
361
362 /* Set starting address; reads will auto-increment */
363 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
364
365 /*
366 * Refuse to read more than would have fit into the log from
367 * the current start_idx. This used to happen due to the race
368 * described below, but now WARN because the code below should
369 * prevent it from happening here.
370 */
371 if (WARN_ON(num_events > capacity - start_idx))
372 num_events = capacity - start_idx;
373
374 /*
375 * "time" is actually "data" for mode 0 (no timestamp).
376 * place event id # at far right for easier visual parsing.
377 */
378 for (i = 0; i < num_events; i++) {
379 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
380 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
381 if (mode == 0) {
382 trace_iwlwifi_dev_ucode_cont_event(
383 priv->trans->dev, 0, time, ev);
384 } else {
385 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
386 trace_iwlwifi_dev_ucode_cont_event(
387 priv->trans->dev, time, data, ev);
388 }
389 }
390 /* Allow device to power down */
391 iwl_release_nic_access(priv->trans);
392 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
393 }
394
395 static void iwl_continuous_event_trace(struct iwl_priv *priv)
396 {
397 u32 capacity; /* event log capacity in # entries */
398 struct {
399 u32 capacity;
400 u32 mode;
401 u32 wrap_counter;
402 u32 write_counter;
403 } __packed read;
404 u32 base; /* SRAM byte address of event log header */
405 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
406 u32 num_wraps; /* # times uCode wrapped to top of log */
407 u32 next_entry; /* index of next entry to be written by uCode */
408
409 base = priv->device_pointers.log_event_table;
410 if (iwlagn_hw_valid_rtc_data_addr(base)) {
411 iwl_read_targ_mem_bytes(priv->trans, base, &read, sizeof(read));
412 capacity = read.capacity;
413 mode = read.mode;
414 num_wraps = read.wrap_counter;
415 next_entry = read.write_counter;
416 } else
417 return;
418
419 /*
420 * Unfortunately, the uCode doesn't use temporary variables.
421 * Therefore, it can happen that we read next_entry == capacity,
422 * which really means next_entry == 0.
423 */
424 if (unlikely(next_entry == capacity))
425 next_entry = 0;
426 /*
427 * Additionally, the uCode increases the write pointer before
428 * the wraps counter, so if the write pointer is smaller than
429 * the old write pointer (wrap occurred) but we read that no
430 * wrap occurred, we actually read between the next_entry and
431 * num_wraps update (this does happen in practice!!) -- take
432 * that into account by increasing num_wraps.
433 */
434 if (unlikely(next_entry < priv->event_log.next_entry &&
435 num_wraps == priv->event_log.num_wraps))
436 num_wraps++;
437
438 if (num_wraps == priv->event_log.num_wraps) {
439 iwl_print_cont_event_trace(
440 priv, base, priv->event_log.next_entry,
441 next_entry - priv->event_log.next_entry,
442 capacity, mode);
443
444 priv->event_log.non_wraps_count++;
445 } else {
446 if (num_wraps - priv->event_log.num_wraps > 1)
447 priv->event_log.wraps_more_count++;
448 else
449 priv->event_log.wraps_once_count++;
450
451 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
452 num_wraps - priv->event_log.num_wraps,
453 next_entry, priv->event_log.next_entry);
454
455 if (next_entry < priv->event_log.next_entry) {
456 iwl_print_cont_event_trace(
457 priv, base, priv->event_log.next_entry,
458 capacity - priv->event_log.next_entry,
459 capacity, mode);
460
461 iwl_print_cont_event_trace(
462 priv, base, 0, next_entry, capacity, mode);
463 } else {
464 iwl_print_cont_event_trace(
465 priv, base, next_entry,
466 capacity - next_entry,
467 capacity, mode);
468
469 iwl_print_cont_event_trace(
470 priv, base, 0, next_entry, capacity, mode);
471 }
472 }
473
474 priv->event_log.num_wraps = num_wraps;
475 priv->event_log.next_entry = next_entry;
476 }
477
478 /**
479 * iwl_bg_ucode_trace - Timer callback to log ucode event
480 *
481 * The timer is continually set to execute every
482 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
483 * this function is to perform continuous uCode event logging operation
484 * if enabled
485 */
486 static void iwl_bg_ucode_trace(unsigned long data)
487 {
488 struct iwl_priv *priv = (struct iwl_priv *)data;
489
490 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
491 return;
492
493 if (priv->event_log.ucode_trace) {
494 iwl_continuous_event_trace(priv);
495 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
496 mod_timer(&priv->ucode_trace,
497 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
498 }
499 }
500
501 static void iwl_bg_tx_flush(struct work_struct *work)
502 {
503 struct iwl_priv *priv =
504 container_of(work, struct iwl_priv, tx_flush);
505
506 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
507 return;
508
509 /* do nothing if rf-kill is on */
510 if (!iwl_is_ready_rf(priv))
511 return;
512
513 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
514 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
515 }
516
517 /*
518 * queue/FIFO/AC mapping definitions
519 */
520
521 static const u8 iwlagn_bss_ac_to_fifo[] = {
522 IWL_TX_FIFO_VO,
523 IWL_TX_FIFO_VI,
524 IWL_TX_FIFO_BE,
525 IWL_TX_FIFO_BK,
526 };
527
528 static const u8 iwlagn_bss_ac_to_queue[] = {
529 0, 1, 2, 3,
530 };
531
532 static const u8 iwlagn_pan_ac_to_fifo[] = {
533 IWL_TX_FIFO_VO_IPAN,
534 IWL_TX_FIFO_VI_IPAN,
535 IWL_TX_FIFO_BE_IPAN,
536 IWL_TX_FIFO_BK_IPAN,
537 };
538
539 static const u8 iwlagn_pan_ac_to_queue[] = {
540 7, 6, 5, 4,
541 };
542
543 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
544 {
545 int i;
546
547 /*
548 * The default context is always valid,
549 * the PAN context depends on uCode.
550 */
551 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
552 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
553 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
554
555 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
556 priv->contexts[i].ctxid = i;
557
558 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
559 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
560 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
561 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
562 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
563 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
564 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
565 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
566 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
567 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
568 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
569 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
570 BIT(NL80211_IFTYPE_STATION);
571 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
572 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
573 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
574 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
575 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
576 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
577 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
578 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
579
580 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
581 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
582 REPLY_WIPAN_RXON_TIMING;
583 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
584 REPLY_WIPAN_RXON_ASSOC;
585 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
586 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
587 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
588 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
589 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
590 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
591 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
592
593 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
594 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
595 BIT(NL80211_IFTYPE_P2P_CLIENT) |
596 BIT(NL80211_IFTYPE_P2P_GO);
597
598 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
599 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
600 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
601 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
602 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
603 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
604 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
605 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
606
607 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
608 }
609
610 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
611 {
612 struct iwl_ct_kill_config cmd;
613 struct iwl_ct_kill_throttling_config adv_cmd;
614 int ret = 0;
615
616 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
617 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
618
619 priv->thermal_throttle.ct_kill_toggle = false;
620
621 if (priv->cfg->base_params->support_ct_kill_exit) {
622 adv_cmd.critical_temperature_enter =
623 cpu_to_le32(priv->hw_params.ct_kill_threshold);
624 adv_cmd.critical_temperature_exit =
625 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
626
627 ret = iwl_dvm_send_cmd_pdu(priv,
628 REPLY_CT_KILL_CONFIG_CMD,
629 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
630 if (ret)
631 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
632 else
633 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
634 "succeeded, critical temperature enter is %d,"
635 "exit is %d\n",
636 priv->hw_params.ct_kill_threshold,
637 priv->hw_params.ct_kill_exit_threshold);
638 } else {
639 cmd.critical_temperature_R =
640 cpu_to_le32(priv->hw_params.ct_kill_threshold);
641
642 ret = iwl_dvm_send_cmd_pdu(priv,
643 REPLY_CT_KILL_CONFIG_CMD,
644 CMD_SYNC, sizeof(cmd), &cmd);
645 if (ret)
646 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
647 else
648 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
649 "succeeded, "
650 "critical temperature is %d\n",
651 priv->hw_params.ct_kill_threshold);
652 }
653 }
654
655 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
656 {
657 struct iwl_calib_cfg_cmd calib_cfg_cmd;
658 struct iwl_host_cmd cmd = {
659 .id = CALIBRATION_CFG_CMD,
660 .len = { sizeof(struct iwl_calib_cfg_cmd), },
661 .data = { &calib_cfg_cmd, },
662 };
663
664 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
665 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
666 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
667
668 return iwl_dvm_send_cmd(priv, &cmd);
669 }
670
671
672 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
673 {
674 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
675 .valid = cpu_to_le32(valid_tx_ant),
676 };
677
678 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
679 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
680 return iwl_dvm_send_cmd_pdu(priv,
681 TX_ANT_CONFIGURATION_CMD,
682 CMD_SYNC,
683 sizeof(struct iwl_tx_ant_config_cmd),
684 &tx_ant_cmd);
685 } else {
686 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
687 return -EOPNOTSUPP;
688 }
689 }
690
691 static void iwl_send_bt_config(struct iwl_priv *priv)
692 {
693 struct iwl_bt_cmd bt_cmd = {
694 .lead_time = BT_LEAD_TIME_DEF,
695 .max_kill = BT_MAX_KILL_DEF,
696 .kill_ack_mask = 0,
697 .kill_cts_mask = 0,
698 };
699
700 if (!iwlwifi_mod_params.bt_coex_active)
701 bt_cmd.flags = BT_COEX_DISABLE;
702 else
703 bt_cmd.flags = BT_COEX_ENABLE;
704
705 priv->bt_enable_flag = bt_cmd.flags;
706 IWL_DEBUG_INFO(priv, "BT coex %s\n",
707 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
708
709 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
710 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
711 IWL_ERR(priv, "failed to send BT Coex Config\n");
712 }
713
714 /**
715 * iwl_alive_start - called after REPLY_ALIVE notification received
716 * from protocol/runtime uCode (initialization uCode's
717 * Alive gets handled by iwl_init_alive_start()).
718 */
719 int iwl_alive_start(struct iwl_priv *priv)
720 {
721 int ret = 0;
722 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
723
724 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
725
726 /* After the ALIVE response, we can send host commands to the uCode */
727 set_bit(STATUS_ALIVE, &priv->status);
728
729 if (iwl_is_rfkill(priv))
730 return -ERFKILL;
731
732 if (priv->event_log.ucode_trace) {
733 /* start collecting data now */
734 mod_timer(&priv->ucode_trace, jiffies);
735 }
736
737 /* download priority table before any calibration request */
738 if (priv->cfg->bt_params &&
739 priv->cfg->bt_params->advanced_bt_coexist) {
740 /* Configure Bluetooth device coexistence support */
741 if (priv->cfg->bt_params->bt_sco_disable)
742 priv->bt_enable_pspoll = false;
743 else
744 priv->bt_enable_pspoll = true;
745
746 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
747 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
748 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
749 iwlagn_send_advance_bt_config(priv);
750 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
751 priv->cur_rssi_ctx = NULL;
752
753 iwl_send_prio_tbl(priv);
754
755 /* FIXME: w/a to force change uCode BT state machine */
756 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
757 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
758 if (ret)
759 return ret;
760 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
761 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
762 if (ret)
763 return ret;
764 } else {
765 /*
766 * default is 2-wire BT coexexistence support
767 */
768 iwl_send_bt_config(priv);
769 }
770
771 /*
772 * Perform runtime calibrations, including DC calibration.
773 */
774 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
775
776 ieee80211_wake_queues(priv->hw);
777
778 /* Configure Tx antenna selection based on H/W config */
779 iwlagn_send_tx_ant_config(priv, priv->eeprom_data->valid_tx_ant);
780
781 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
782 struct iwl_rxon_cmd *active_rxon =
783 (struct iwl_rxon_cmd *)&ctx->active;
784 /* apply any changes in staging */
785 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
786 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
787 } else {
788 struct iwl_rxon_context *tmp;
789 /* Initialize our rx_config data */
790 for_each_context(priv, tmp)
791 iwl_connection_init_rx_config(priv, tmp);
792
793 iwlagn_set_rxon_chain(priv, ctx);
794 }
795
796 if (!priv->wowlan) {
797 /* WoWLAN ucode will not reply in the same way, skip it */
798 iwl_reset_run_time_calib(priv);
799 }
800
801 set_bit(STATUS_READY, &priv->status);
802
803 /* Configure the adapter for unassociated operation */
804 ret = iwlagn_commit_rxon(priv, ctx);
805 if (ret)
806 return ret;
807
808 /* At this point, the NIC is initialized and operational */
809 iwl_rf_kill_ct_config(priv);
810
811 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
812
813 return iwl_power_update_mode(priv, true);
814 }
815
816 /**
817 * iwl_clear_driver_stations - clear knowledge of all stations from driver
818 * @priv: iwl priv struct
819 *
820 * This is called during iwl_down() to make sure that in the case
821 * we're coming there from a hardware restart mac80211 will be
822 * able to reconfigure stations -- if we're getting there in the
823 * normal down flow then the stations will already be cleared.
824 */
825 static void iwl_clear_driver_stations(struct iwl_priv *priv)
826 {
827 struct iwl_rxon_context *ctx;
828
829 spin_lock_bh(&priv->sta_lock);
830 memset(priv->stations, 0, sizeof(priv->stations));
831 priv->num_stations = 0;
832
833 priv->ucode_key_table = 0;
834
835 for_each_context(priv, ctx) {
836 /*
837 * Remove all key information that is not stored as part
838 * of station information since mac80211 may not have had
839 * a chance to remove all the keys. When device is
840 * reconfigured by mac80211 after an error all keys will
841 * be reconfigured.
842 */
843 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
844 ctx->key_mapping_keys = 0;
845 }
846
847 spin_unlock_bh(&priv->sta_lock);
848 }
849
850 void iwl_down(struct iwl_priv *priv)
851 {
852 int exit_pending;
853
854 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
855
856 lockdep_assert_held(&priv->mutex);
857
858 iwl_scan_cancel_timeout(priv, 200);
859
860 /*
861 * If active, scanning won't cancel it, so say it expired.
862 * No race since we hold the mutex here and a new one
863 * can't come in at this time.
864 */
865 if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT)
866 ieee80211_remain_on_channel_expired(priv->hw);
867
868 exit_pending =
869 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
870
871 iwl_clear_ucode_stations(priv, NULL);
872 iwl_dealloc_bcast_stations(priv);
873 iwl_clear_driver_stations(priv);
874
875 /* reset BT coex data */
876 priv->bt_status = 0;
877 priv->cur_rssi_ctx = NULL;
878 priv->bt_is_sco = 0;
879 if (priv->cfg->bt_params)
880 priv->bt_traffic_load =
881 priv->cfg->bt_params->bt_init_traffic_load;
882 else
883 priv->bt_traffic_load = 0;
884 priv->bt_full_concurrent = false;
885 priv->bt_ci_compliance = 0;
886
887 /* Wipe out the EXIT_PENDING status bit if we are not actually
888 * exiting the module */
889 if (!exit_pending)
890 clear_bit(STATUS_EXIT_PENDING, &priv->status);
891
892 if (priv->mac80211_registered)
893 ieee80211_stop_queues(priv->hw);
894
895 priv->ucode_loaded = false;
896 iwl_trans_stop_device(priv->trans);
897
898 /* Set num_aux_in_flight must be done after the transport is stopped */
899 atomic_set(&priv->num_aux_in_flight, 0);
900
901 /* Clear out all status bits but a few that are stable across reset */
902 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
903 STATUS_RF_KILL_HW |
904 test_bit(STATUS_FW_ERROR, &priv->status) <<
905 STATUS_FW_ERROR |
906 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
907 STATUS_EXIT_PENDING;
908
909 dev_kfree_skb(priv->beacon_skb);
910 priv->beacon_skb = NULL;
911 }
912
913 /*****************************************************************************
914 *
915 * Workqueue callbacks
916 *
917 *****************************************************************************/
918
919 static void iwl_bg_run_time_calib_work(struct work_struct *work)
920 {
921 struct iwl_priv *priv = container_of(work, struct iwl_priv,
922 run_time_calib_work);
923
924 mutex_lock(&priv->mutex);
925
926 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
927 test_bit(STATUS_SCANNING, &priv->status)) {
928 mutex_unlock(&priv->mutex);
929 return;
930 }
931
932 if (priv->start_calib) {
933 iwl_chain_noise_calibration(priv);
934 iwl_sensitivity_calibration(priv);
935 }
936
937 mutex_unlock(&priv->mutex);
938 }
939
940 void iwlagn_prepare_restart(struct iwl_priv *priv)
941 {
942 bool bt_full_concurrent;
943 u8 bt_ci_compliance;
944 u8 bt_load;
945 u8 bt_status;
946 bool bt_is_sco;
947 int i;
948
949 lockdep_assert_held(&priv->mutex);
950
951 priv->is_open = 0;
952
953 /*
954 * __iwl_down() will clear the BT status variables,
955 * which is correct, but when we restart we really
956 * want to keep them so restore them afterwards.
957 *
958 * The restart process will later pick them up and
959 * re-configure the hw when we reconfigure the BT
960 * command.
961 */
962 bt_full_concurrent = priv->bt_full_concurrent;
963 bt_ci_compliance = priv->bt_ci_compliance;
964 bt_load = priv->bt_traffic_load;
965 bt_status = priv->bt_status;
966 bt_is_sco = priv->bt_is_sco;
967
968 iwl_down(priv);
969
970 priv->bt_full_concurrent = bt_full_concurrent;
971 priv->bt_ci_compliance = bt_ci_compliance;
972 priv->bt_traffic_load = bt_load;
973 priv->bt_status = bt_status;
974 priv->bt_is_sco = bt_is_sco;
975
976 /* reset aggregation queues */
977 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
978 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
979 /* and stop counts */
980 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
981 atomic_set(&priv->queue_stop_count[i], 0);
982
983 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
984 }
985
986 static void iwl_bg_restart(struct work_struct *data)
987 {
988 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
989
990 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
991 return;
992
993 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
994 mutex_lock(&priv->mutex);
995 iwlagn_prepare_restart(priv);
996 mutex_unlock(&priv->mutex);
997 iwl_cancel_deferred_work(priv);
998 if (priv->mac80211_registered)
999 ieee80211_restart_hw(priv->hw);
1000 else
1001 IWL_ERR(priv,
1002 "Cannot request restart before registrating with mac80211");
1003 } else {
1004 WARN_ON(1);
1005 }
1006 }
1007
1008
1009
1010
1011 void iwlagn_disable_roc(struct iwl_priv *priv)
1012 {
1013 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1014
1015 lockdep_assert_held(&priv->mutex);
1016
1017 if (!priv->hw_roc_setup)
1018 return;
1019
1020 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1021 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1022
1023 priv->hw_roc_channel = NULL;
1024
1025 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1026
1027 iwlagn_commit_rxon(priv, ctx);
1028
1029 ctx->is_active = false;
1030 priv->hw_roc_setup = false;
1031 }
1032
1033 static void iwlagn_disable_roc_work(struct work_struct *work)
1034 {
1035 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1036 hw_roc_disable_work.work);
1037
1038 mutex_lock(&priv->mutex);
1039 iwlagn_disable_roc(priv);
1040 mutex_unlock(&priv->mutex);
1041 }
1042
1043 /*****************************************************************************
1044 *
1045 * driver setup and teardown
1046 *
1047 *****************************************************************************/
1048
1049 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1050 {
1051 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1052
1053 INIT_WORK(&priv->restart, iwl_bg_restart);
1054 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1055 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1056 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1057 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1058 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1059 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1060 iwlagn_disable_roc_work);
1061
1062 iwl_setup_scan_deferred_work(priv);
1063
1064 if (priv->cfg->bt_params)
1065 iwlagn_bt_setup_deferred_work(priv);
1066
1067 init_timer(&priv->statistics_periodic);
1068 priv->statistics_periodic.data = (unsigned long)priv;
1069 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1070
1071 init_timer(&priv->ucode_trace);
1072 priv->ucode_trace.data = (unsigned long)priv;
1073 priv->ucode_trace.function = iwl_bg_ucode_trace;
1074 }
1075
1076 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1077 {
1078 if (priv->cfg->bt_params)
1079 iwlagn_bt_cancel_deferred_work(priv);
1080
1081 cancel_work_sync(&priv->run_time_calib_work);
1082 cancel_work_sync(&priv->beacon_update);
1083
1084 iwl_cancel_scan_deferred_work(priv);
1085
1086 cancel_work_sync(&priv->bt_full_concurrency);
1087 cancel_work_sync(&priv->bt_runtime_config);
1088 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1089
1090 del_timer_sync(&priv->statistics_periodic);
1091 del_timer_sync(&priv->ucode_trace);
1092 }
1093
1094 static int iwl_init_drv(struct iwl_priv *priv)
1095 {
1096 spin_lock_init(&priv->sta_lock);
1097
1098 mutex_init(&priv->mutex);
1099
1100 INIT_LIST_HEAD(&priv->calib_results);
1101
1102 priv->band = IEEE80211_BAND_2GHZ;
1103
1104 priv->plcp_delta_threshold =
1105 priv->cfg->base_params->plcp_delta_threshold;
1106
1107 priv->iw_mode = NL80211_IFTYPE_STATION;
1108 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1109 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1110 priv->agg_tids_count = 0;
1111
1112 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1113
1114 priv->rx_statistics_jiffies = jiffies;
1115
1116 /* Choose which receivers/antennas to use */
1117 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1118
1119 iwl_init_scan_params(priv);
1120
1121 /* init bt coex */
1122 if (priv->cfg->bt_params &&
1123 priv->cfg->bt_params->advanced_bt_coexist) {
1124 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1125 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1126 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1127 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1128 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1129 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1130 }
1131
1132 return 0;
1133 }
1134
1135 static void iwl_uninit_drv(struct iwl_priv *priv)
1136 {
1137 kfree(priv->scan_cmd);
1138 kfree(priv->beacon_cmd);
1139 kfree(rcu_dereference_raw(priv->noa_data));
1140 iwl_calib_free_results(priv);
1141 #ifdef CONFIG_IWLWIFI_DEBUGFS
1142 kfree(priv->wowlan_sram);
1143 #endif
1144 }
1145
1146 static void iwl_set_hw_params(struct iwl_priv *priv)
1147 {
1148 if (priv->cfg->ht_params)
1149 priv->hw_params.use_rts_for_aggregation =
1150 priv->cfg->ht_params->use_rts_for_aggregation;
1151
1152 /* Device-specific setup */
1153 priv->lib->set_hw_params(priv);
1154 }
1155
1156
1157
1158 /* show what optional capabilities we have */
1159 static void iwl_option_config(struct iwl_priv *priv)
1160 {
1161 #ifdef CONFIG_IWLWIFI_DEBUG
1162 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1163 #else
1164 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1165 #endif
1166
1167 #ifdef CONFIG_IWLWIFI_DEBUGFS
1168 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1169 #else
1170 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1171 #endif
1172
1173 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1174 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1175 #else
1176 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1177 #endif
1178
1179 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1180 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n");
1181 #else
1182 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n");
1183 #endif
1184
1185 #ifdef CONFIG_IWLWIFI_P2P
1186 IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1187 #else
1188 IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1189 #endif
1190 }
1191
1192 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1193 {
1194 priv->eeprom_data->sku = priv->eeprom_data->sku;
1195
1196 if (priv->eeprom_data->sku & EEPROM_SKU_CAP_11N_ENABLE &&
1197 !priv->cfg->ht_params) {
1198 IWL_ERR(priv, "Invalid 11n configuration\n");
1199 return -EINVAL;
1200 }
1201
1202 if (!priv->eeprom_data->sku) {
1203 IWL_ERR(priv, "Invalid device sku\n");
1204 return -EINVAL;
1205 }
1206
1207 IWL_INFO(priv, "Device SKU: 0x%X\n", priv->eeprom_data->sku);
1208
1209 priv->hw_params.tx_chains_num =
1210 num_of_ant(priv->eeprom_data->valid_tx_ant);
1211 if (priv->cfg->rx_with_siso_diversity)
1212 priv->hw_params.rx_chains_num = 1;
1213 else
1214 priv->hw_params.rx_chains_num =
1215 num_of_ant(priv->eeprom_data->valid_rx_ant);
1216
1217 IWL_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1218 priv->eeprom_data->valid_tx_ant,
1219 priv->eeprom_data->valid_rx_ant);
1220
1221 return 0;
1222 }
1223
1224 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1225 const struct iwl_cfg *cfg,
1226 const struct iwl_fw *fw,
1227 struct dentry *dbgfs_dir)
1228 {
1229 struct iwl_priv *priv;
1230 struct ieee80211_hw *hw;
1231 struct iwl_op_mode *op_mode;
1232 u16 num_mac;
1233 u32 ucode_flags;
1234 struct iwl_trans_config trans_cfg;
1235 static const u8 no_reclaim_cmds[] = {
1236 REPLY_RX_PHY_CMD,
1237 REPLY_RX_MPDU_CMD,
1238 REPLY_COMPRESSED_BA,
1239 STATISTICS_NOTIFICATION,
1240 REPLY_TX,
1241 };
1242 int i;
1243
1244 /************************
1245 * 1. Allocating HW data
1246 ************************/
1247 hw = iwl_alloc_all();
1248 if (!hw) {
1249 pr_err("%s: Cannot allocate network device\n", cfg->name);
1250 goto out;
1251 }
1252
1253 op_mode = hw->priv;
1254 op_mode->ops = &iwl_dvm_ops;
1255 priv = IWL_OP_MODE_GET_DVM(op_mode);
1256 priv->trans = trans;
1257 priv->dev = trans->dev;
1258 priv->cfg = cfg;
1259 priv->fw = fw;
1260
1261 switch (priv->cfg->device_family) {
1262 case IWL_DEVICE_FAMILY_1000:
1263 case IWL_DEVICE_FAMILY_100:
1264 priv->lib = &iwl1000_lib;
1265 break;
1266 case IWL_DEVICE_FAMILY_2000:
1267 case IWL_DEVICE_FAMILY_105:
1268 priv->lib = &iwl2000_lib;
1269 break;
1270 case IWL_DEVICE_FAMILY_2030:
1271 case IWL_DEVICE_FAMILY_135:
1272 priv->lib = &iwl2030_lib;
1273 break;
1274 case IWL_DEVICE_FAMILY_5000:
1275 priv->lib = &iwl5000_lib;
1276 break;
1277 case IWL_DEVICE_FAMILY_5150:
1278 priv->lib = &iwl5150_lib;
1279 break;
1280 case IWL_DEVICE_FAMILY_6000:
1281 case IWL_DEVICE_FAMILY_6005:
1282 case IWL_DEVICE_FAMILY_6000i:
1283 case IWL_DEVICE_FAMILY_6050:
1284 case IWL_DEVICE_FAMILY_6150:
1285 priv->lib = &iwl6000_lib;
1286 break;
1287 case IWL_DEVICE_FAMILY_6030:
1288 priv->lib = &iwl6030_lib;
1289 break;
1290 default:
1291 break;
1292 }
1293
1294 if (WARN_ON(!priv->lib))
1295 goto out_free_hw;
1296
1297 /*
1298 * Populate the state variables that the transport layer needs
1299 * to know about.
1300 */
1301 trans_cfg.op_mode = op_mode;
1302 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1303 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1304 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1305 if (!iwlwifi_mod_params.wd_disable)
1306 trans_cfg.queue_watchdog_timeout =
1307 priv->cfg->base_params->wd_timeout;
1308 else
1309 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1310 trans_cfg.command_names = iwl_dvm_cmd_strings;
1311 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1312
1313 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1314 priv->cfg->base_params->num_of_queues);
1315
1316 ucode_flags = fw->ucode_capa.flags;
1317
1318 #ifndef CONFIG_IWLWIFI_P2P
1319 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1320 #endif
1321
1322 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1323 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1324 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1325 } else {
1326 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1327 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1328 }
1329
1330 /* Configure transport layer */
1331 iwl_trans_configure(priv->trans, &trans_cfg);
1332
1333 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1334 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1335
1336 /* At this point both hw and priv are allocated. */
1337
1338 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1339
1340 iwl_option_config(priv);
1341
1342 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1343
1344 /* is antenna coupling more than 35dB ? */
1345 priv->bt_ant_couple_ok =
1346 (iwlwifi_mod_params.ant_coupling >
1347 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1348 true : false;
1349
1350 /* enable/disable bt channel inhibition */
1351 priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1352 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1353 (priv->bt_ch_announce) ? "On" : "Off");
1354
1355 /* these spin locks will be used in apm_ops.init and EEPROM access
1356 * we should init now
1357 */
1358 spin_lock_init(&priv->statistics.lock);
1359
1360 /***********************
1361 * 2. Read REV register
1362 ***********************/
1363 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1364 priv->cfg->name, priv->trans->hw_rev);
1365
1366 if (iwl_trans_start_hw(priv->trans))
1367 goto out_free_hw;
1368
1369 /* Read the EEPROM */
1370 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1371 &priv->eeprom_blob_size)) {
1372 IWL_ERR(priv, "Unable to init EEPROM\n");
1373 goto out_free_hw;
1374 }
1375
1376 /* Reset chip to save power until we load uCode during "up". */
1377 iwl_trans_stop_hw(priv->trans, false);
1378
1379 priv->eeprom_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1380 priv->eeprom_blob,
1381 priv->eeprom_blob_size);
1382 if (!priv->eeprom_data)
1383 goto out_free_eeprom_blob;
1384
1385 if (iwl_eeprom_check_version(priv->eeprom_data, priv->trans))
1386 goto out_free_eeprom;
1387
1388 if (iwl_eeprom_init_hw_params(priv))
1389 goto out_free_eeprom;
1390
1391 /* extract MAC Address */
1392 memcpy(priv->addresses[0].addr, priv->eeprom_data->hw_addr, ETH_ALEN);
1393 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1394 priv->hw->wiphy->addresses = priv->addresses;
1395 priv->hw->wiphy->n_addresses = 1;
1396 num_mac = priv->eeprom_data->n_hw_addrs;
1397 if (num_mac > 1) {
1398 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1399 ETH_ALEN);
1400 priv->addresses[1].addr[5]++;
1401 priv->hw->wiphy->n_addresses++;
1402 }
1403
1404 /************************
1405 * 4. Setup HW constants
1406 ************************/
1407 iwl_set_hw_params(priv);
1408
1409 if (!(priv->eeprom_data->sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1410 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1411 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1412 /*
1413 * if not PAN, then don't support P2P -- might be a uCode
1414 * packaging bug or due to the eeprom check above
1415 */
1416 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1417 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1418 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1419
1420 /* Configure transport layer again*/
1421 iwl_trans_configure(priv->trans, &trans_cfg);
1422 }
1423
1424 /*******************
1425 * 5. Setup priv
1426 *******************/
1427 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1428 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1429 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1430 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1431 i != IWL_IPAN_CMD_QUEUE_NUM)
1432 priv->queue_to_mac80211[i] = i;
1433 atomic_set(&priv->queue_stop_count[i], 0);
1434 }
1435
1436 if (iwl_init_drv(priv))
1437 goto out_free_eeprom;
1438
1439 /* At this point both hw and priv are initialized. */
1440
1441 /********************
1442 * 6. Setup services
1443 ********************/
1444 iwl_setup_deferred_work(priv);
1445 iwl_setup_rx_handlers(priv);
1446 iwl_testmode_init(priv);
1447
1448 iwl_power_initialize(priv);
1449 iwl_tt_initialize(priv);
1450
1451 snprintf(priv->hw->wiphy->fw_version,
1452 sizeof(priv->hw->wiphy->fw_version),
1453 "%s", fw->fw_version);
1454
1455 priv->new_scan_threshold_behaviour =
1456 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1457
1458 priv->phy_calib_chain_noise_reset_cmd =
1459 fw->ucode_capa.standard_phy_calibration_size;
1460 priv->phy_calib_chain_noise_gain_cmd =
1461 fw->ucode_capa.standard_phy_calibration_size + 1;
1462
1463 /* initialize all valid contexts */
1464 iwl_init_context(priv, ucode_flags);
1465
1466 /**************************************************
1467 * This is still part of probe() in a sense...
1468 *
1469 * 7. Setup and register with mac80211 and debugfs
1470 **************************************************/
1471 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1472 goto out_destroy_workqueue;
1473
1474 if (iwl_dbgfs_register(priv, dbgfs_dir))
1475 goto out_mac80211_unregister;
1476
1477 return op_mode;
1478
1479 out_mac80211_unregister:
1480 iwlagn_mac_unregister(priv);
1481 out_destroy_workqueue:
1482 iwl_tt_exit(priv);
1483 iwl_testmode_free(priv);
1484 iwl_cancel_deferred_work(priv);
1485 destroy_workqueue(priv->workqueue);
1486 priv->workqueue = NULL;
1487 iwl_uninit_drv(priv);
1488 out_free_eeprom_blob:
1489 kfree(priv->eeprom_blob);
1490 out_free_eeprom:
1491 iwl_free_eeprom_data(priv->eeprom_data);
1492 out_free_hw:
1493 ieee80211_free_hw(priv->hw);
1494 out:
1495 op_mode = NULL;
1496 return op_mode;
1497 }
1498
1499 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1500 {
1501 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1502
1503 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1504
1505 iwl_testmode_free(priv);
1506 iwlagn_mac_unregister(priv);
1507
1508 iwl_tt_exit(priv);
1509
1510 /*This will stop the queues, move the device to low power state */
1511 priv->ucode_loaded = false;
1512 iwl_trans_stop_device(priv->trans);
1513
1514 kfree(priv->eeprom_blob);
1515 iwl_free_eeprom_data(priv->eeprom_data);
1516
1517 /*netif_stop_queue(dev); */
1518 flush_workqueue(priv->workqueue);
1519
1520 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1521 * priv->workqueue... so we can't take down the workqueue
1522 * until now... */
1523 destroy_workqueue(priv->workqueue);
1524 priv->workqueue = NULL;
1525
1526 iwl_uninit_drv(priv);
1527
1528 dev_kfree_skb(priv->beacon_skb);
1529
1530 iwl_trans_stop_hw(priv->trans, true);
1531 ieee80211_free_hw(priv->hw);
1532 }
1533
1534 static const char * const desc_lookup_text[] = {
1535 "OK",
1536 "FAIL",
1537 "BAD_PARAM",
1538 "BAD_CHECKSUM",
1539 "NMI_INTERRUPT_WDG",
1540 "SYSASSERT",
1541 "FATAL_ERROR",
1542 "BAD_COMMAND",
1543 "HW_ERROR_TUNE_LOCK",
1544 "HW_ERROR_TEMPERATURE",
1545 "ILLEGAL_CHAN_FREQ",
1546 "VCC_NOT_STABLE",
1547 "FH_ERROR",
1548 "NMI_INTERRUPT_HOST",
1549 "NMI_INTERRUPT_ACTION_PT",
1550 "NMI_INTERRUPT_UNKNOWN",
1551 "UCODE_VERSION_MISMATCH",
1552 "HW_ERROR_ABS_LOCK",
1553 "HW_ERROR_CAL_LOCK_FAIL",
1554 "NMI_INTERRUPT_INST_ACTION_PT",
1555 "NMI_INTERRUPT_DATA_ACTION_PT",
1556 "NMI_TRM_HW_ER",
1557 "NMI_INTERRUPT_TRM",
1558 "NMI_INTERRUPT_BREAK_POINT",
1559 "DEBUG_0",
1560 "DEBUG_1",
1561 "DEBUG_2",
1562 "DEBUG_3",
1563 };
1564
1565 static struct { char *name; u8 num; } advanced_lookup[] = {
1566 { "NMI_INTERRUPT_WDG", 0x34 },
1567 { "SYSASSERT", 0x35 },
1568 { "UCODE_VERSION_MISMATCH", 0x37 },
1569 { "BAD_COMMAND", 0x38 },
1570 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1571 { "FATAL_ERROR", 0x3D },
1572 { "NMI_TRM_HW_ERR", 0x46 },
1573 { "NMI_INTERRUPT_TRM", 0x4C },
1574 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1575 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1576 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1577 { "NMI_INTERRUPT_HOST", 0x66 },
1578 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1579 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1580 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1581 { "ADVANCED_SYSASSERT", 0 },
1582 };
1583
1584 static const char *desc_lookup(u32 num)
1585 {
1586 int i;
1587 int max = ARRAY_SIZE(desc_lookup_text);
1588
1589 if (num < max)
1590 return desc_lookup_text[num];
1591
1592 max = ARRAY_SIZE(advanced_lookup) - 1;
1593 for (i = 0; i < max; i++) {
1594 if (advanced_lookup[i].num == num)
1595 break;
1596 }
1597 return advanced_lookup[i].name;
1598 }
1599
1600 #define ERROR_START_OFFSET (1 * sizeof(u32))
1601 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1602
1603 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1604 {
1605 struct iwl_trans *trans = priv->trans;
1606 u32 base;
1607 struct iwl_error_event_table table;
1608
1609 base = priv->device_pointers.error_event_table;
1610 if (priv->cur_ucode == IWL_UCODE_INIT) {
1611 if (!base)
1612 base = priv->fw->init_errlog_ptr;
1613 } else {
1614 if (!base)
1615 base = priv->fw->inst_errlog_ptr;
1616 }
1617
1618 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1619 IWL_ERR(priv,
1620 "Not valid error log pointer 0x%08X for %s uCode\n",
1621 base,
1622 (priv->cur_ucode == IWL_UCODE_INIT)
1623 ? "Init" : "RT");
1624 return;
1625 }
1626
1627 /*TODO: Update dbgfs with ISR error stats obtained below */
1628 iwl_read_targ_mem_bytes(trans, base, &table, sizeof(table));
1629
1630 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1631 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1632 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1633 priv->status, table.valid);
1634 }
1635
1636 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1637 table.data1, table.data2, table.line,
1638 table.blink1, table.blink2, table.ilink1,
1639 table.ilink2, table.bcon_time, table.gp1,
1640 table.gp2, table.gp3, table.ucode_ver,
1641 table.hw_ver, table.brd_ver);
1642 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1643 desc_lookup(table.error_id));
1644 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1645 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1646 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1647 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1648 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1649 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1650 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1651 IWL_ERR(priv, "0x%08X | line\n", table.line);
1652 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1653 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1654 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1655 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1656 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1657 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1658 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1659 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1660 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1661 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1662 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1663 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1664 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1665 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1666 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1667 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1668 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1669 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1670 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1671 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1672 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1673 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1674 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1675 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1676 }
1677
1678 #define EVENT_START_OFFSET (4 * sizeof(u32))
1679
1680 /**
1681 * iwl_print_event_log - Dump error event log to syslog
1682 *
1683 */
1684 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1685 u32 num_events, u32 mode,
1686 int pos, char **buf, size_t bufsz)
1687 {
1688 u32 i;
1689 u32 base; /* SRAM byte address of event log header */
1690 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1691 u32 ptr; /* SRAM byte address of log data */
1692 u32 ev, time, data; /* event log data */
1693 unsigned long reg_flags;
1694
1695 struct iwl_trans *trans = priv->trans;
1696
1697 if (num_events == 0)
1698 return pos;
1699
1700 base = priv->device_pointers.log_event_table;
1701 if (priv->cur_ucode == IWL_UCODE_INIT) {
1702 if (!base)
1703 base = priv->fw->init_evtlog_ptr;
1704 } else {
1705 if (!base)
1706 base = priv->fw->inst_evtlog_ptr;
1707 }
1708
1709 if (mode == 0)
1710 event_size = 2 * sizeof(u32);
1711 else
1712 event_size = 3 * sizeof(u32);
1713
1714 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1715
1716 /* Make sure device is powered up for SRAM reads */
1717 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1718 if (unlikely(!iwl_grab_nic_access(trans)))
1719 goto out_unlock;
1720
1721 /* Set starting address; reads will auto-increment */
1722 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1723
1724 /* "time" is actually "data" for mode 0 (no timestamp).
1725 * place event id # at far right for easier visual parsing. */
1726 for (i = 0; i < num_events; i++) {
1727 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1728 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1729 if (mode == 0) {
1730 /* data, ev */
1731 if (bufsz) {
1732 pos += scnprintf(*buf + pos, bufsz - pos,
1733 "EVT_LOG:0x%08x:%04u\n",
1734 time, ev);
1735 } else {
1736 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1737 time, ev);
1738 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1739 time, ev);
1740 }
1741 } else {
1742 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1743 if (bufsz) {
1744 pos += scnprintf(*buf + pos, bufsz - pos,
1745 "EVT_LOGT:%010u:0x%08x:%04u\n",
1746 time, data, ev);
1747 } else {
1748 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1749 time, data, ev);
1750 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1751 data, ev);
1752 }
1753 }
1754 }
1755
1756 /* Allow device to power down */
1757 iwl_release_nic_access(trans);
1758 out_unlock:
1759 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1760 return pos;
1761 }
1762
1763 /**
1764 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1765 */
1766 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1767 u32 num_wraps, u32 next_entry,
1768 u32 size, u32 mode,
1769 int pos, char **buf, size_t bufsz)
1770 {
1771 /*
1772 * display the newest DEFAULT_LOG_ENTRIES entries
1773 * i.e the entries just before the next ont that uCode would fill.
1774 */
1775 if (num_wraps) {
1776 if (next_entry < size) {
1777 pos = iwl_print_event_log(priv,
1778 capacity - (size - next_entry),
1779 size - next_entry, mode,
1780 pos, buf, bufsz);
1781 pos = iwl_print_event_log(priv, 0,
1782 next_entry, mode,
1783 pos, buf, bufsz);
1784 } else
1785 pos = iwl_print_event_log(priv, next_entry - size,
1786 size, mode, pos, buf, bufsz);
1787 } else {
1788 if (next_entry < size) {
1789 pos = iwl_print_event_log(priv, 0, next_entry,
1790 mode, pos, buf, bufsz);
1791 } else {
1792 pos = iwl_print_event_log(priv, next_entry - size,
1793 size, mode, pos, buf, bufsz);
1794 }
1795 }
1796 return pos;
1797 }
1798
1799 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1800
1801 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1802 char **buf, bool display)
1803 {
1804 u32 base; /* SRAM byte address of event log header */
1805 u32 capacity; /* event log capacity in # entries */
1806 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1807 u32 num_wraps; /* # times uCode wrapped to top of log */
1808 u32 next_entry; /* index of next entry to be written by uCode */
1809 u32 size; /* # entries that we'll print */
1810 u32 logsize;
1811 int pos = 0;
1812 size_t bufsz = 0;
1813 struct iwl_trans *trans = priv->trans;
1814
1815 base = priv->device_pointers.log_event_table;
1816 if (priv->cur_ucode == IWL_UCODE_INIT) {
1817 logsize = priv->fw->init_evtlog_size;
1818 if (!base)
1819 base = priv->fw->init_evtlog_ptr;
1820 } else {
1821 logsize = priv->fw->inst_evtlog_size;
1822 if (!base)
1823 base = priv->fw->inst_evtlog_ptr;
1824 }
1825
1826 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1827 IWL_ERR(priv,
1828 "Invalid event log pointer 0x%08X for %s uCode\n",
1829 base,
1830 (priv->cur_ucode == IWL_UCODE_INIT)
1831 ? "Init" : "RT");
1832 return -EINVAL;
1833 }
1834
1835 /* event log header */
1836 capacity = iwl_read_targ_mem(trans, base);
1837 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
1838 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
1839 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
1840
1841 if (capacity > logsize) {
1842 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1843 "entries\n", capacity, logsize);
1844 capacity = logsize;
1845 }
1846
1847 if (next_entry > logsize) {
1848 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1849 next_entry, logsize);
1850 next_entry = logsize;
1851 }
1852
1853 size = num_wraps ? capacity : next_entry;
1854
1855 /* bail out if nothing in log */
1856 if (size == 0) {
1857 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1858 return pos;
1859 }
1860
1861 #ifdef CONFIG_IWLWIFI_DEBUG
1862 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1863 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1864 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1865 #else
1866 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1867 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1868 #endif
1869 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1870 size);
1871
1872 #ifdef CONFIG_IWLWIFI_DEBUG
1873 if (display) {
1874 if (full_log)
1875 bufsz = capacity * 48;
1876 else
1877 bufsz = size * 48;
1878 *buf = kmalloc(bufsz, GFP_KERNEL);
1879 if (!*buf)
1880 return -ENOMEM;
1881 }
1882 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1883 /*
1884 * if uCode has wrapped back to top of log,
1885 * start at the oldest entry,
1886 * i.e the next one that uCode would fill.
1887 */
1888 if (num_wraps)
1889 pos = iwl_print_event_log(priv, next_entry,
1890 capacity - next_entry, mode,
1891 pos, buf, bufsz);
1892 /* (then/else) start at top of log */
1893 pos = iwl_print_event_log(priv, 0,
1894 next_entry, mode, pos, buf, bufsz);
1895 } else
1896 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1897 next_entry, size, mode,
1898 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 #endif
1904 return pos;
1905 }
1906
1907 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1908 {
1909 unsigned int reload_msec;
1910 unsigned long reload_jiffies;
1911
1912 #ifdef CONFIG_IWLWIFI_DEBUG
1913 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1914 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1915 #endif
1916
1917 /* uCode is no longer loaded. */
1918 priv->ucode_loaded = false;
1919
1920 /* Set the FW error flag -- cleared on iwl_down */
1921 set_bit(STATUS_FW_ERROR, &priv->status);
1922
1923 iwl_abort_notification_waits(&priv->notif_wait);
1924
1925 /* Keep the restart process from trying to send host
1926 * commands by clearing the ready bit */
1927 clear_bit(STATUS_READY, &priv->status);
1928
1929 if (!ondemand) {
1930 /*
1931 * If firmware keep reloading, then it indicate something
1932 * serious wrong and firmware having problem to recover
1933 * from it. Instead of keep trying which will fill the syslog
1934 * and hang the system, let's just stop it
1935 */
1936 reload_jiffies = jiffies;
1937 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1938 (long) priv->reload_jiffies);
1939 priv->reload_jiffies = reload_jiffies;
1940 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1941 priv->reload_count++;
1942 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1943 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1944 return;
1945 }
1946 } else
1947 priv->reload_count = 0;
1948 }
1949
1950 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1951 if (iwlwifi_mod_params.restart_fw) {
1952 IWL_DEBUG_FW_ERRORS(priv,
1953 "Restarting adapter due to uCode error.\n");
1954 queue_work(priv->workqueue, &priv->restart);
1955 } else
1956 IWL_DEBUG_FW_ERRORS(priv,
1957 "Detected FW error, but not restarting\n");
1958 }
1959 }
1960
1961 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1962 {
1963 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1964
1965 IWL_ERR(priv, "Loaded firmware version: %s\n",
1966 priv->fw->fw_version);
1967
1968 iwl_dump_nic_error_log(priv);
1969 iwl_dump_nic_event_log(priv, false, NULL, false);
1970
1971 iwlagn_fw_error(priv, false);
1972 }
1973
1974 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1975 {
1976 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1977
1978 if (!iwl_check_for_ct_kill(priv)) {
1979 IWL_ERR(priv, "Restarting adapter queue is full\n");
1980 iwlagn_fw_error(priv, false);
1981 }
1982 }
1983
1984 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1985
1986 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1987 {
1988 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1989 u16 radio_cfg = priv->eeprom_data->radio_cfg;
1990
1991 /* SKU Control */
1992 iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1993 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1994 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1995 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1996 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1997 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1998 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1999
2000 /* write radio config values to register */
2001 if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) {
2002 u32 reg_val =
2003 EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <<
2004 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2005 EEPROM_RF_CFG_STEP_MSK(radio_cfg) <<
2006 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2007 EEPROM_RF_CFG_DASH_MSK(radio_cfg) <<
2008 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2009
2010 iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2011 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2012 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2013 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, reg_val);
2014
2015 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2016 EEPROM_RF_CFG_TYPE_MSK(radio_cfg),
2017 EEPROM_RF_CFG_STEP_MSK(radio_cfg),
2018 EEPROM_RF_CFG_DASH_MSK(radio_cfg));
2019 } else {
2020 WARN_ON(1);
2021 }
2022
2023 /* set CSR_HW_CONFIG_REG for uCode use */
2024 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2025 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2026 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2027
2028 /* W/A : NIC is stuck in a reset state after Early PCIe power off
2029 * (PCIe power is lost before PERST# is asserted),
2030 * causing ME FW to lose ownership and not being able to obtain it back.
2031 */
2032 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2033 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2034 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2035
2036 if (priv->lib->nic_config)
2037 priv->lib->nic_config(priv);
2038 }
2039
2040 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2041 {
2042 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2043
2044 clear_bit(STATUS_READY, &priv->status);
2045 IWL_ERR(priv, "RF is used by WiMAX\n");
2046 }
2047
2048 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2049 {
2050 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2051 int mq = priv->queue_to_mac80211[queue];
2052
2053 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2054 return;
2055
2056 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2057 IWL_DEBUG_TX_QUEUES(priv,
2058 "queue %d (mac80211 %d) already stopped\n",
2059 queue, mq);
2060 return;
2061 }
2062
2063 set_bit(mq, &priv->transport_queue_stop);
2064 ieee80211_stop_queue(priv->hw, mq);
2065 }
2066
2067 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2068 {
2069 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2070 int mq = priv->queue_to_mac80211[queue];
2071
2072 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2073 return;
2074
2075 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2076 IWL_DEBUG_TX_QUEUES(priv,
2077 "queue %d (mac80211 %d) already awake\n",
2078 queue, mq);
2079 return;
2080 }
2081
2082 clear_bit(mq, &priv->transport_queue_stop);
2083
2084 if (!priv->passive_no_rx)
2085 ieee80211_wake_queue(priv->hw, mq);
2086 }
2087
2088 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2089 {
2090 int mq;
2091
2092 if (!priv->passive_no_rx)
2093 return;
2094
2095 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2096 if (!test_bit(mq, &priv->transport_queue_stop)) {
2097 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2098 ieee80211_wake_queue(priv->hw, mq);
2099 } else {
2100 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2101 }
2102 }
2103
2104 priv->passive_no_rx = false;
2105 }
2106
2107 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2108 {
2109 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2110 struct ieee80211_tx_info *info;
2111
2112 info = IEEE80211_SKB_CB(skb);
2113 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2114 dev_kfree_skb_any(skb);
2115 }
2116
2117 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2118 {
2119 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2120
2121 if (state)
2122 set_bit(STATUS_RF_KILL_HW, &priv->status);
2123 else
2124 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2125
2126 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2127 }
2128
2129 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2130 .start = iwl_op_mode_dvm_start,
2131 .stop = iwl_op_mode_dvm_stop,
2132 .rx = iwl_rx_dispatch,
2133 .queue_full = iwl_stop_sw_queue,
2134 .queue_not_full = iwl_wake_sw_queue,
2135 .hw_rf_kill = iwl_set_hw_rfkill_state,
2136 .free_skb = iwl_free_skb,
2137 .nic_error = iwl_nic_error,
2138 .cmd_queue_full = iwl_cmd_queue_full,
2139 .nic_config = iwl_nic_config,
2140 .wimax_active = iwl_wimax_active,
2141 };
2142
2143 /*****************************************************************************
2144 *
2145 * driver and module entry point
2146 *
2147 *****************************************************************************/
2148 static int __init iwl_init(void)
2149 {
2150
2151 int ret;
2152
2153 ret = iwlagn_rate_control_register();
2154 if (ret) {
2155 pr_err("Unable to register rate control algorithm: %d\n", ret);
2156 return ret;
2157 }
2158
2159 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2160 if (ret) {
2161 pr_err("Unable to register op_mode: %d\n", ret);
2162 iwlagn_rate_control_unregister();
2163 }
2164
2165 return ret;
2166 }
2167 module_init(iwl_init);
2168
2169 static void __exit iwl_exit(void)
2170 {
2171 iwl_opmode_deregister("iwldvm");
2172 iwlagn_rate_control_unregister();
2173 }
2174 module_exit(iwl_exit);
Linux kernel - Deliverables
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