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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec...
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / dvm / main.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2014 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->nvm_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 mutex_lock(&priv->mutex);
256 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
257 goto out;
258
259 /* dont send host command if rf-kill is on */
260 if (!iwl_is_ready_rf(priv))
261 goto out;
262
263 iwlagn_send_advance_bt_config(priv);
264 out:
265 mutex_unlock(&priv->mutex);
266 }
267
268 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
269 {
270 struct iwl_priv *priv =
271 container_of(work, struct iwl_priv, bt_full_concurrency);
272 struct iwl_rxon_context *ctx;
273
274 mutex_lock(&priv->mutex);
275
276 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
277 goto out;
278
279 /* dont send host command if rf-kill is on */
280 if (!iwl_is_ready_rf(priv))
281 goto out;
282
283 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
284 priv->bt_full_concurrent ?
285 "full concurrency" : "3-wire");
286
287 /*
288 * LQ & RXON updated cmds must be sent before BT Config cmd
289 * to avoid 3-wire collisions
290 */
291 for_each_context(priv, ctx) {
292 iwlagn_set_rxon_chain(priv, ctx);
293 iwlagn_commit_rxon(priv, ctx);
294 }
295
296 iwlagn_send_advance_bt_config(priv);
297 out:
298 mutex_unlock(&priv->mutex);
299 }
300
301 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
302 {
303 struct iwl_statistics_cmd statistics_cmd = {
304 .configuration_flags =
305 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
306 };
307
308 if (flags & CMD_ASYNC)
309 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
310 CMD_ASYNC,
311 sizeof(struct iwl_statistics_cmd),
312 &statistics_cmd);
313 else
314 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
315 CMD_SYNC,
316 sizeof(struct iwl_statistics_cmd),
317 &statistics_cmd);
318 }
319
320 /**
321 * iwl_bg_statistics_periodic - Timer callback to queue statistics
322 *
323 * This callback is provided in order to send a statistics request.
324 *
325 * This timer function is continually reset to execute within
326 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
327 * was received. We need to ensure we receive the statistics in order
328 * to update the temperature used for calibrating the TXPOWER.
329 */
330 static void iwl_bg_statistics_periodic(unsigned long data)
331 {
332 struct iwl_priv *priv = (struct iwl_priv *)data;
333
334 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
335 return;
336
337 /* dont send host command if rf-kill is on */
338 if (!iwl_is_ready_rf(priv))
339 return;
340
341 iwl_send_statistics_request(priv, CMD_ASYNC, false);
342 }
343
344
345 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
346 u32 start_idx, u32 num_events,
347 u32 capacity, u32 mode)
348 {
349 u32 i;
350 u32 ptr; /* SRAM byte address of log data */
351 u32 ev, time, data; /* event log data */
352 unsigned long reg_flags;
353
354 if (mode == 0)
355 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
356 else
357 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
358
359 /* Make sure device is powered up for SRAM reads */
360 if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
361 return;
362
363 /* Set starting address; reads will auto-increment */
364 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
365
366 /*
367 * Refuse to read more than would have fit into the log from
368 * the current start_idx. This used to happen due to the race
369 * described below, but now WARN because the code below should
370 * prevent it from happening here.
371 */
372 if (WARN_ON(num_events > capacity - start_idx))
373 num_events = capacity - start_idx;
374
375 /*
376 * "time" is actually "data" for mode 0 (no timestamp).
377 * place event id # at far right for easier visual parsing.
378 */
379 for (i = 0; i < num_events; i++) {
380 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
381 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
382 if (mode == 0) {
383 trace_iwlwifi_dev_ucode_cont_event(
384 priv->trans->dev, 0, time, ev);
385 } else {
386 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
387 trace_iwlwifi_dev_ucode_cont_event(
388 priv->trans->dev, time, data, ev);
389 }
390 }
391 /* Allow device to power down */
392 iwl_trans_release_nic_access(priv->trans, &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_trans_read_mem_bytes(priv->trans, base,
412 &read, sizeof(read));
413 capacity = read.capacity;
414 mode = read.mode;
415 num_wraps = read.wrap_counter;
416 next_entry = read.write_counter;
417 } else
418 return;
419
420 /*
421 * Unfortunately, the uCode doesn't use temporary variables.
422 * Therefore, it can happen that we read next_entry == capacity,
423 * which really means next_entry == 0.
424 */
425 if (unlikely(next_entry == capacity))
426 next_entry = 0;
427 /*
428 * Additionally, the uCode increases the write pointer before
429 * the wraps counter, so if the write pointer is smaller than
430 * the old write pointer (wrap occurred) but we read that no
431 * wrap occurred, we actually read between the next_entry and
432 * num_wraps update (this does happen in practice!!) -- take
433 * that into account by increasing num_wraps.
434 */
435 if (unlikely(next_entry < priv->event_log.next_entry &&
436 num_wraps == priv->event_log.num_wraps))
437 num_wraps++;
438
439 if (num_wraps == priv->event_log.num_wraps) {
440 iwl_print_cont_event_trace(
441 priv, base, priv->event_log.next_entry,
442 next_entry - priv->event_log.next_entry,
443 capacity, mode);
444
445 priv->event_log.non_wraps_count++;
446 } else {
447 if (num_wraps - priv->event_log.num_wraps > 1)
448 priv->event_log.wraps_more_count++;
449 else
450 priv->event_log.wraps_once_count++;
451
452 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
453 num_wraps - priv->event_log.num_wraps,
454 next_entry, priv->event_log.next_entry);
455
456 if (next_entry < priv->event_log.next_entry) {
457 iwl_print_cont_event_trace(
458 priv, base, priv->event_log.next_entry,
459 capacity - priv->event_log.next_entry,
460 capacity, mode);
461
462 iwl_print_cont_event_trace(
463 priv, base, 0, next_entry, capacity, mode);
464 } else {
465 iwl_print_cont_event_trace(
466 priv, base, next_entry,
467 capacity - next_entry,
468 capacity, mode);
469
470 iwl_print_cont_event_trace(
471 priv, base, 0, next_entry, capacity, mode);
472 }
473 }
474
475 priv->event_log.num_wraps = num_wraps;
476 priv->event_log.next_entry = next_entry;
477 }
478
479 /**
480 * iwl_bg_ucode_trace - Timer callback to log ucode event
481 *
482 * The timer is continually set to execute every
483 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
484 * this function is to perform continuous uCode event logging operation
485 * if enabled
486 */
487 static void iwl_bg_ucode_trace(unsigned long data)
488 {
489 struct iwl_priv *priv = (struct iwl_priv *)data;
490
491 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
492 return;
493
494 if (priv->event_log.ucode_trace) {
495 iwl_continuous_event_trace(priv);
496 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
497 mod_timer(&priv->ucode_trace,
498 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
499 }
500 }
501
502 static void iwl_bg_tx_flush(struct work_struct *work)
503 {
504 struct iwl_priv *priv =
505 container_of(work, struct iwl_priv, tx_flush);
506
507 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
508 return;
509
510 /* do nothing if rf-kill is on */
511 if (!iwl_is_ready_rf(priv))
512 return;
513
514 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
515 iwlagn_dev_txfifo_flush(priv);
516 }
517
518 /*
519 * queue/FIFO/AC mapping definitions
520 */
521
522 static const u8 iwlagn_bss_ac_to_fifo[] = {
523 IWL_TX_FIFO_VO,
524 IWL_TX_FIFO_VI,
525 IWL_TX_FIFO_BE,
526 IWL_TX_FIFO_BK,
527 };
528
529 static const u8 iwlagn_bss_ac_to_queue[] = {
530 0, 1, 2, 3,
531 };
532
533 static const u8 iwlagn_pan_ac_to_fifo[] = {
534 IWL_TX_FIFO_VO_IPAN,
535 IWL_TX_FIFO_VI_IPAN,
536 IWL_TX_FIFO_BE_IPAN,
537 IWL_TX_FIFO_BK_IPAN,
538 };
539
540 static const u8 iwlagn_pan_ac_to_queue[] = {
541 7, 6, 5, 4,
542 };
543
544 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
545 {
546 int i;
547
548 /*
549 * The default context is always valid,
550 * the PAN context depends on uCode.
551 */
552 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
553 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
554 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
555
556 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
557 priv->contexts[i].ctxid = i;
558
559 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
560 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
561 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
562 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
563 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
564 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
565 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
566 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
567 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
568 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
569 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
570 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
571 BIT(NL80211_IFTYPE_STATION);
572 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
573 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
574 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
575 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
576 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
577 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
578 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
579 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
580
581 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
582 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
583 REPLY_WIPAN_RXON_TIMING;
584 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
585 REPLY_WIPAN_RXON_ASSOC;
586 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
587 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
588 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
589 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
590 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
591 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
592 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
593
594 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
595 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
596 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
597 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
598 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
599 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
600 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
601 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
602
603 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
604 }
605
606 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
607 {
608 struct iwl_ct_kill_config cmd;
609 struct iwl_ct_kill_throttling_config adv_cmd;
610 int ret = 0;
611
612 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
613 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
614
615 priv->thermal_throttle.ct_kill_toggle = false;
616
617 if (priv->lib->support_ct_kill_exit) {
618 adv_cmd.critical_temperature_enter =
619 cpu_to_le32(priv->hw_params.ct_kill_threshold);
620 adv_cmd.critical_temperature_exit =
621 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
622
623 ret = iwl_dvm_send_cmd_pdu(priv,
624 REPLY_CT_KILL_CONFIG_CMD,
625 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
626 if (ret)
627 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
628 else
629 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
630 "succeeded, critical temperature enter is %d,"
631 "exit is %d\n",
632 priv->hw_params.ct_kill_threshold,
633 priv->hw_params.ct_kill_exit_threshold);
634 } else {
635 cmd.critical_temperature_R =
636 cpu_to_le32(priv->hw_params.ct_kill_threshold);
637
638 ret = iwl_dvm_send_cmd_pdu(priv,
639 REPLY_CT_KILL_CONFIG_CMD,
640 CMD_SYNC, sizeof(cmd), &cmd);
641 if (ret)
642 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
643 else
644 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
645 "succeeded, "
646 "critical temperature is %d\n",
647 priv->hw_params.ct_kill_threshold);
648 }
649 }
650
651 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
652 {
653 struct iwl_calib_cfg_cmd calib_cfg_cmd;
654 struct iwl_host_cmd cmd = {
655 .id = CALIBRATION_CFG_CMD,
656 .len = { sizeof(struct iwl_calib_cfg_cmd), },
657 .data = { &calib_cfg_cmd, },
658 };
659
660 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
661 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
662 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
663
664 return iwl_dvm_send_cmd(priv, &cmd);
665 }
666
667
668 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
669 {
670 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
671 .valid = cpu_to_le32(valid_tx_ant),
672 };
673
674 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
675 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
676 return iwl_dvm_send_cmd_pdu(priv,
677 TX_ANT_CONFIGURATION_CMD,
678 CMD_SYNC,
679 sizeof(struct iwl_tx_ant_config_cmd),
680 &tx_ant_cmd);
681 } else {
682 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
683 return -EOPNOTSUPP;
684 }
685 }
686
687 static void iwl_send_bt_config(struct iwl_priv *priv)
688 {
689 struct iwl_bt_cmd bt_cmd = {
690 .lead_time = BT_LEAD_TIME_DEF,
691 .max_kill = BT_MAX_KILL_DEF,
692 .kill_ack_mask = 0,
693 .kill_cts_mask = 0,
694 };
695
696 if (!iwlwifi_mod_params.bt_coex_active)
697 bt_cmd.flags = BT_COEX_DISABLE;
698 else
699 bt_cmd.flags = BT_COEX_ENABLE;
700
701 priv->bt_enable_flag = bt_cmd.flags;
702 IWL_DEBUG_INFO(priv, "BT coex %s\n",
703 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
704
705 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
706 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
707 IWL_ERR(priv, "failed to send BT Coex Config\n");
708 }
709
710 /**
711 * iwl_alive_start - called after REPLY_ALIVE notification received
712 * from protocol/runtime uCode (initialization uCode's
713 * Alive gets handled by iwl_init_alive_start()).
714 */
715 int iwl_alive_start(struct iwl_priv *priv)
716 {
717 int ret = 0;
718 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
719
720 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
721
722 /* After the ALIVE response, we can send host commands to the uCode */
723 set_bit(STATUS_ALIVE, &priv->status);
724
725 if (iwl_is_rfkill(priv))
726 return -ERFKILL;
727
728 if (priv->event_log.ucode_trace) {
729 /* start collecting data now */
730 mod_timer(&priv->ucode_trace, jiffies);
731 }
732
733 /* download priority table before any calibration request */
734 if (priv->lib->bt_params &&
735 priv->lib->bt_params->advanced_bt_coexist) {
736 /* Configure Bluetooth device coexistence support */
737 if (priv->lib->bt_params->bt_sco_disable)
738 priv->bt_enable_pspoll = false;
739 else
740 priv->bt_enable_pspoll = true;
741
742 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
743 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
744 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
745 iwlagn_send_advance_bt_config(priv);
746 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
747 priv->cur_rssi_ctx = NULL;
748
749 iwl_send_prio_tbl(priv);
750
751 /* FIXME: w/a to force change uCode BT state machine */
752 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
753 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
754 if (ret)
755 return ret;
756 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
757 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
758 if (ret)
759 return ret;
760 } else if (priv->lib->bt_params) {
761 /*
762 * default is 2-wire BT coexexistence support
763 */
764 iwl_send_bt_config(priv);
765 }
766
767 /*
768 * Perform runtime calibrations, including DC calibration.
769 */
770 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
771
772 ieee80211_wake_queues(priv->hw);
773
774 /* Configure Tx antenna selection based on H/W config */
775 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
776
777 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
778 struct iwl_rxon_cmd *active_rxon =
779 (struct iwl_rxon_cmd *)&ctx->active;
780 /* apply any changes in staging */
781 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
782 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
783 } else {
784 struct iwl_rxon_context *tmp;
785 /* Initialize our rx_config data */
786 for_each_context(priv, tmp)
787 iwl_connection_init_rx_config(priv, tmp);
788
789 iwlagn_set_rxon_chain(priv, ctx);
790 }
791
792 if (!priv->wowlan) {
793 /* WoWLAN ucode will not reply in the same way, skip it */
794 iwl_reset_run_time_calib(priv);
795 }
796
797 set_bit(STATUS_READY, &priv->status);
798
799 /* Configure the adapter for unassociated operation */
800 ret = iwlagn_commit_rxon(priv, ctx);
801 if (ret)
802 return ret;
803
804 /* At this point, the NIC is initialized and operational */
805 iwl_rf_kill_ct_config(priv);
806
807 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
808
809 return iwl_power_update_mode(priv, true);
810 }
811
812 /**
813 * iwl_clear_driver_stations - clear knowledge of all stations from driver
814 * @priv: iwl priv struct
815 *
816 * This is called during iwl_down() to make sure that in the case
817 * we're coming there from a hardware restart mac80211 will be
818 * able to reconfigure stations -- if we're getting there in the
819 * normal down flow then the stations will already be cleared.
820 */
821 static void iwl_clear_driver_stations(struct iwl_priv *priv)
822 {
823 struct iwl_rxon_context *ctx;
824
825 spin_lock_bh(&priv->sta_lock);
826 memset(priv->stations, 0, sizeof(priv->stations));
827 priv->num_stations = 0;
828
829 priv->ucode_key_table = 0;
830
831 for_each_context(priv, ctx) {
832 /*
833 * Remove all key information that is not stored as part
834 * of station information since mac80211 may not have had
835 * a chance to remove all the keys. When device is
836 * reconfigured by mac80211 after an error all keys will
837 * be reconfigured.
838 */
839 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
840 ctx->key_mapping_keys = 0;
841 }
842
843 spin_unlock_bh(&priv->sta_lock);
844 }
845
846 void iwl_down(struct iwl_priv *priv)
847 {
848 int exit_pending;
849
850 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
851
852 lockdep_assert_held(&priv->mutex);
853
854 iwl_scan_cancel_timeout(priv, 200);
855
856 exit_pending =
857 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
858
859 iwl_clear_ucode_stations(priv, NULL);
860 iwl_dealloc_bcast_stations(priv);
861 iwl_clear_driver_stations(priv);
862
863 /* reset BT coex data */
864 priv->bt_status = 0;
865 priv->cur_rssi_ctx = NULL;
866 priv->bt_is_sco = 0;
867 if (priv->lib->bt_params)
868 priv->bt_traffic_load =
869 priv->lib->bt_params->bt_init_traffic_load;
870 else
871 priv->bt_traffic_load = 0;
872 priv->bt_full_concurrent = false;
873 priv->bt_ci_compliance = 0;
874
875 /* Wipe out the EXIT_PENDING status bit if we are not actually
876 * exiting the module */
877 if (!exit_pending)
878 clear_bit(STATUS_EXIT_PENDING, &priv->status);
879
880 if (priv->mac80211_registered)
881 ieee80211_stop_queues(priv->hw);
882
883 priv->ucode_loaded = false;
884 iwl_trans_stop_device(priv->trans);
885
886 /* Set num_aux_in_flight must be done after the transport is stopped */
887 atomic_set(&priv->num_aux_in_flight, 0);
888
889 /* Clear out all status bits but a few that are stable across reset */
890 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
891 STATUS_RF_KILL_HW |
892 test_bit(STATUS_FW_ERROR, &priv->status) <<
893 STATUS_FW_ERROR |
894 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
895 STATUS_EXIT_PENDING;
896
897 dev_kfree_skb(priv->beacon_skb);
898 priv->beacon_skb = NULL;
899 }
900
901 /*****************************************************************************
902 *
903 * Workqueue callbacks
904 *
905 *****************************************************************************/
906
907 static void iwl_bg_run_time_calib_work(struct work_struct *work)
908 {
909 struct iwl_priv *priv = container_of(work, struct iwl_priv,
910 run_time_calib_work);
911
912 mutex_lock(&priv->mutex);
913
914 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
915 test_bit(STATUS_SCANNING, &priv->status)) {
916 mutex_unlock(&priv->mutex);
917 return;
918 }
919
920 if (priv->start_calib) {
921 iwl_chain_noise_calibration(priv);
922 iwl_sensitivity_calibration(priv);
923 }
924
925 mutex_unlock(&priv->mutex);
926 }
927
928 void iwlagn_prepare_restart(struct iwl_priv *priv)
929 {
930 bool bt_full_concurrent;
931 u8 bt_ci_compliance;
932 u8 bt_load;
933 u8 bt_status;
934 bool bt_is_sco;
935 int i;
936
937 lockdep_assert_held(&priv->mutex);
938
939 priv->is_open = 0;
940
941 /*
942 * __iwl_down() will clear the BT status variables,
943 * which is correct, but when we restart we really
944 * want to keep them so restore them afterwards.
945 *
946 * The restart process will later pick them up and
947 * re-configure the hw when we reconfigure the BT
948 * command.
949 */
950 bt_full_concurrent = priv->bt_full_concurrent;
951 bt_ci_compliance = priv->bt_ci_compliance;
952 bt_load = priv->bt_traffic_load;
953 bt_status = priv->bt_status;
954 bt_is_sco = priv->bt_is_sco;
955
956 iwl_down(priv);
957
958 priv->bt_full_concurrent = bt_full_concurrent;
959 priv->bt_ci_compliance = bt_ci_compliance;
960 priv->bt_traffic_load = bt_load;
961 priv->bt_status = bt_status;
962 priv->bt_is_sco = bt_is_sco;
963
964 /* reset aggregation queues */
965 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
966 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
967 /* and stop counts */
968 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
969 atomic_set(&priv->queue_stop_count[i], 0);
970
971 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
972 }
973
974 static void iwl_bg_restart(struct work_struct *data)
975 {
976 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
977
978 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
979 return;
980
981 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
982 mutex_lock(&priv->mutex);
983 iwlagn_prepare_restart(priv);
984 mutex_unlock(&priv->mutex);
985 iwl_cancel_deferred_work(priv);
986 if (priv->mac80211_registered)
987 ieee80211_restart_hw(priv->hw);
988 else
989 IWL_ERR(priv,
990 "Cannot request restart before registrating with mac80211");
991 } else {
992 WARN_ON(1);
993 }
994 }
995
996 /*****************************************************************************
997 *
998 * driver setup and teardown
999 *
1000 *****************************************************************************/
1001
1002 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1003 {
1004 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1005
1006 INIT_WORK(&priv->restart, iwl_bg_restart);
1007 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1008 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1009 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1010 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1011 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1012
1013 iwl_setup_scan_deferred_work(priv);
1014
1015 if (priv->lib->bt_params)
1016 iwlagn_bt_setup_deferred_work(priv);
1017
1018 init_timer(&priv->statistics_periodic);
1019 priv->statistics_periodic.data = (unsigned long)priv;
1020 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1021
1022 init_timer(&priv->ucode_trace);
1023 priv->ucode_trace.data = (unsigned long)priv;
1024 priv->ucode_trace.function = iwl_bg_ucode_trace;
1025 }
1026
1027 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1028 {
1029 if (priv->lib->bt_params)
1030 iwlagn_bt_cancel_deferred_work(priv);
1031
1032 cancel_work_sync(&priv->run_time_calib_work);
1033 cancel_work_sync(&priv->beacon_update);
1034
1035 iwl_cancel_scan_deferred_work(priv);
1036
1037 cancel_work_sync(&priv->bt_full_concurrency);
1038 cancel_work_sync(&priv->bt_runtime_config);
1039
1040 del_timer_sync(&priv->statistics_periodic);
1041 del_timer_sync(&priv->ucode_trace);
1042 }
1043
1044 static int iwl_init_drv(struct iwl_priv *priv)
1045 {
1046 spin_lock_init(&priv->sta_lock);
1047
1048 mutex_init(&priv->mutex);
1049
1050 INIT_LIST_HEAD(&priv->calib_results);
1051
1052 priv->band = IEEE80211_BAND_2GHZ;
1053
1054 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1055
1056 priv->iw_mode = NL80211_IFTYPE_STATION;
1057 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1058 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1059 priv->agg_tids_count = 0;
1060
1061 priv->rx_statistics_jiffies = jiffies;
1062
1063 /* Choose which receivers/antennas to use */
1064 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1065
1066 iwl_init_scan_params(priv);
1067
1068 /* init bt coex */
1069 if (priv->lib->bt_params &&
1070 priv->lib->bt_params->advanced_bt_coexist) {
1071 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1072 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1073 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1074 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1075 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1076 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1077 }
1078
1079 return 0;
1080 }
1081
1082 static void iwl_uninit_drv(struct iwl_priv *priv)
1083 {
1084 kfree(priv->scan_cmd);
1085 kfree(priv->beacon_cmd);
1086 kfree(rcu_dereference_raw(priv->noa_data));
1087 iwl_calib_free_results(priv);
1088 #ifdef CONFIG_IWLWIFI_DEBUGFS
1089 kfree(priv->wowlan_sram);
1090 #endif
1091 }
1092
1093 static void iwl_set_hw_params(struct iwl_priv *priv)
1094 {
1095 if (priv->cfg->ht_params)
1096 priv->hw_params.use_rts_for_aggregation =
1097 priv->cfg->ht_params->use_rts_for_aggregation;
1098
1099 /* Device-specific setup */
1100 priv->lib->set_hw_params(priv);
1101 }
1102
1103
1104
1105 /* show what optional capabilities we have */
1106 static void iwl_option_config(struct iwl_priv *priv)
1107 {
1108 #ifdef CONFIG_IWLWIFI_DEBUG
1109 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1110 #else
1111 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1112 #endif
1113
1114 #ifdef CONFIG_IWLWIFI_DEBUGFS
1115 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1116 #else
1117 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1118 #endif
1119
1120 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1121 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1122 #else
1123 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1124 #endif
1125 }
1126
1127 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1128 {
1129 struct iwl_nvm_data *data = priv->nvm_data;
1130 char *debug_msg;
1131
1132 if (data->sku_cap_11n_enable &&
1133 !priv->cfg->ht_params) {
1134 IWL_ERR(priv, "Invalid 11n configuration\n");
1135 return -EINVAL;
1136 }
1137
1138 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1139 !data->sku_cap_band_52GHz_enable) {
1140 IWL_ERR(priv, "Invalid device sku\n");
1141 return -EINVAL;
1142 }
1143
1144 debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
1145 IWL_DEBUG_INFO(priv, debug_msg,
1146 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1147 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1148 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1149
1150 priv->hw_params.tx_chains_num =
1151 num_of_ant(data->valid_tx_ant);
1152 if (priv->cfg->rx_with_siso_diversity)
1153 priv->hw_params.rx_chains_num = 1;
1154 else
1155 priv->hw_params.rx_chains_num =
1156 num_of_ant(data->valid_rx_ant);
1157
1158 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1159 data->valid_tx_ant,
1160 data->valid_rx_ant);
1161
1162 return 0;
1163 }
1164
1165 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1166 const struct iwl_cfg *cfg,
1167 const struct iwl_fw *fw,
1168 struct dentry *dbgfs_dir)
1169 {
1170 struct iwl_priv *priv;
1171 struct ieee80211_hw *hw;
1172 struct iwl_op_mode *op_mode;
1173 u16 num_mac;
1174 u32 ucode_flags;
1175 struct iwl_trans_config trans_cfg = {};
1176 static const u8 no_reclaim_cmds[] = {
1177 REPLY_RX_PHY_CMD,
1178 REPLY_RX_MPDU_CMD,
1179 REPLY_COMPRESSED_BA,
1180 STATISTICS_NOTIFICATION,
1181 REPLY_TX,
1182 };
1183 int i;
1184
1185 /************************
1186 * 1. Allocating HW data
1187 ************************/
1188 hw = iwl_alloc_all();
1189 if (!hw) {
1190 pr_err("%s: Cannot allocate network device\n", cfg->name);
1191 goto out;
1192 }
1193
1194 op_mode = hw->priv;
1195 op_mode->ops = &iwl_dvm_ops;
1196 priv = IWL_OP_MODE_GET_DVM(op_mode);
1197 priv->trans = trans;
1198 priv->dev = trans->dev;
1199 priv->cfg = cfg;
1200 priv->fw = fw;
1201
1202 switch (priv->cfg->device_family) {
1203 case IWL_DEVICE_FAMILY_1000:
1204 case IWL_DEVICE_FAMILY_100:
1205 priv->lib = &iwl_dvm_1000_cfg;
1206 break;
1207 case IWL_DEVICE_FAMILY_2000:
1208 priv->lib = &iwl_dvm_2000_cfg;
1209 break;
1210 case IWL_DEVICE_FAMILY_105:
1211 priv->lib = &iwl_dvm_105_cfg;
1212 break;
1213 case IWL_DEVICE_FAMILY_2030:
1214 case IWL_DEVICE_FAMILY_135:
1215 priv->lib = &iwl_dvm_2030_cfg;
1216 break;
1217 case IWL_DEVICE_FAMILY_5000:
1218 priv->lib = &iwl_dvm_5000_cfg;
1219 break;
1220 case IWL_DEVICE_FAMILY_5150:
1221 priv->lib = &iwl_dvm_5150_cfg;
1222 break;
1223 case IWL_DEVICE_FAMILY_6000:
1224 case IWL_DEVICE_FAMILY_6000i:
1225 priv->lib = &iwl_dvm_6000_cfg;
1226 break;
1227 case IWL_DEVICE_FAMILY_6005:
1228 priv->lib = &iwl_dvm_6005_cfg;
1229 break;
1230 case IWL_DEVICE_FAMILY_6050:
1231 case IWL_DEVICE_FAMILY_6150:
1232 priv->lib = &iwl_dvm_6050_cfg;
1233 break;
1234 case IWL_DEVICE_FAMILY_6030:
1235 priv->lib = &iwl_dvm_6030_cfg;
1236 break;
1237 default:
1238 break;
1239 }
1240
1241 if (WARN_ON(!priv->lib))
1242 goto out_free_hw;
1243
1244 /*
1245 * Populate the state variables that the transport layer needs
1246 * to know about.
1247 */
1248 trans_cfg.op_mode = op_mode;
1249 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1250 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1251 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1252 if (!iwlwifi_mod_params.wd_disable)
1253 trans_cfg.queue_watchdog_timeout =
1254 priv->cfg->base_params->wd_timeout;
1255 else
1256 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1257 trans_cfg.command_names = iwl_dvm_cmd_strings;
1258 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1259
1260 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1261 priv->cfg->base_params->num_of_queues);
1262
1263 ucode_flags = fw->ucode_capa.flags;
1264
1265 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1266 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1267 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1268 } else {
1269 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1270 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1271 }
1272
1273 /* Configure transport layer */
1274 iwl_trans_configure(priv->trans, &trans_cfg);
1275
1276 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1277 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1278
1279 /* At this point both hw and priv are allocated. */
1280
1281 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1282
1283 iwl_option_config(priv);
1284
1285 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1286
1287 /* is antenna coupling more than 35dB ? */
1288 priv->bt_ant_couple_ok =
1289 (iwlwifi_mod_params.ant_coupling >
1290 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1291 true : false;
1292
1293 /* bt channel inhibition enabled*/
1294 priv->bt_ch_announce = true;
1295 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1296 (priv->bt_ch_announce) ? "On" : "Off");
1297
1298 /* these spin locks will be used in apm_ops.init and EEPROM access
1299 * we should init now
1300 */
1301 spin_lock_init(&priv->statistics.lock);
1302
1303 /***********************
1304 * 2. Read REV register
1305 ***********************/
1306 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1307 priv->cfg->name, priv->trans->hw_rev);
1308
1309 if (iwl_trans_start_hw(priv->trans))
1310 goto out_free_hw;
1311
1312 /* Read the EEPROM */
1313 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1314 &priv->eeprom_blob_size)) {
1315 IWL_ERR(priv, "Unable to init EEPROM\n");
1316 goto out_free_hw;
1317 }
1318
1319 /* Reset chip to save power until we load uCode during "up". */
1320 iwl_trans_stop_device(priv->trans);
1321
1322 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1323 priv->eeprom_blob,
1324 priv->eeprom_blob_size);
1325 if (!priv->nvm_data)
1326 goto out_free_eeprom_blob;
1327
1328 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1329 goto out_free_eeprom;
1330
1331 if (iwl_eeprom_init_hw_params(priv))
1332 goto out_free_eeprom;
1333
1334 /* extract MAC Address */
1335 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1336 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1337 priv->hw->wiphy->addresses = priv->addresses;
1338 priv->hw->wiphy->n_addresses = 1;
1339 num_mac = priv->nvm_data->n_hw_addrs;
1340 if (num_mac > 1) {
1341 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1342 ETH_ALEN);
1343 priv->addresses[1].addr[5]++;
1344 priv->hw->wiphy->n_addresses++;
1345 }
1346
1347 /************************
1348 * 4. Setup HW constants
1349 ************************/
1350 iwl_set_hw_params(priv);
1351
1352 if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1353 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1354 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1355 /*
1356 * if not PAN, then don't support P2P -- might be a uCode
1357 * packaging bug or due to the eeprom check above
1358 */
1359 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1360 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1361
1362 /* Configure transport layer again*/
1363 iwl_trans_configure(priv->trans, &trans_cfg);
1364 }
1365
1366 /*******************
1367 * 5. Setup priv
1368 *******************/
1369 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1370 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1371 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1372 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1373 i != IWL_IPAN_CMD_QUEUE_NUM)
1374 priv->queue_to_mac80211[i] = i;
1375 atomic_set(&priv->queue_stop_count[i], 0);
1376 }
1377
1378 if (iwl_init_drv(priv))
1379 goto out_free_eeprom;
1380
1381 /* At this point both hw and priv are initialized. */
1382
1383 /********************
1384 * 6. Setup services
1385 ********************/
1386 iwl_setup_deferred_work(priv);
1387 iwl_setup_rx_handlers(priv);
1388
1389 iwl_power_initialize(priv);
1390 iwl_tt_initialize(priv);
1391
1392 snprintf(priv->hw->wiphy->fw_version,
1393 sizeof(priv->hw->wiphy->fw_version),
1394 "%s", fw->fw_version);
1395
1396 priv->new_scan_threshold_behaviour =
1397 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1398
1399 priv->phy_calib_chain_noise_reset_cmd =
1400 fw->ucode_capa.standard_phy_calibration_size;
1401 priv->phy_calib_chain_noise_gain_cmd =
1402 fw->ucode_capa.standard_phy_calibration_size + 1;
1403
1404 /* initialize all valid contexts */
1405 iwl_init_context(priv, ucode_flags);
1406
1407 /**************************************************
1408 * This is still part of probe() in a sense...
1409 *
1410 * 7. Setup and register with mac80211 and debugfs
1411 **************************************************/
1412 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1413 goto out_destroy_workqueue;
1414
1415 if (iwl_dbgfs_register(priv, dbgfs_dir))
1416 goto out_mac80211_unregister;
1417
1418 return op_mode;
1419
1420 out_mac80211_unregister:
1421 iwlagn_mac_unregister(priv);
1422 out_destroy_workqueue:
1423 iwl_tt_exit(priv);
1424 iwl_cancel_deferred_work(priv);
1425 destroy_workqueue(priv->workqueue);
1426 priv->workqueue = NULL;
1427 iwl_uninit_drv(priv);
1428 out_free_eeprom_blob:
1429 kfree(priv->eeprom_blob);
1430 out_free_eeprom:
1431 iwl_free_nvm_data(priv->nvm_data);
1432 out_free_hw:
1433 ieee80211_free_hw(priv->hw);
1434 out:
1435 op_mode = NULL;
1436 return op_mode;
1437 }
1438
1439 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1440 {
1441 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1442
1443 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1444
1445 iwlagn_mac_unregister(priv);
1446
1447 iwl_tt_exit(priv);
1448
1449 kfree(priv->eeprom_blob);
1450 iwl_free_nvm_data(priv->nvm_data);
1451
1452 /*netif_stop_queue(dev); */
1453 flush_workqueue(priv->workqueue);
1454
1455 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1456 * priv->workqueue... so we can't take down the workqueue
1457 * until now... */
1458 destroy_workqueue(priv->workqueue);
1459 priv->workqueue = NULL;
1460
1461 iwl_uninit_drv(priv);
1462
1463 dev_kfree_skb(priv->beacon_skb);
1464
1465 iwl_trans_op_mode_leave(priv->trans);
1466 ieee80211_free_hw(priv->hw);
1467 }
1468
1469 static const char * const desc_lookup_text[] = {
1470 "OK",
1471 "FAIL",
1472 "BAD_PARAM",
1473 "BAD_CHECKSUM",
1474 "NMI_INTERRUPT_WDG",
1475 "SYSASSERT",
1476 "FATAL_ERROR",
1477 "BAD_COMMAND",
1478 "HW_ERROR_TUNE_LOCK",
1479 "HW_ERROR_TEMPERATURE",
1480 "ILLEGAL_CHAN_FREQ",
1481 "VCC_NOT_STABLE",
1482 "FH_ERROR",
1483 "NMI_INTERRUPT_HOST",
1484 "NMI_INTERRUPT_ACTION_PT",
1485 "NMI_INTERRUPT_UNKNOWN",
1486 "UCODE_VERSION_MISMATCH",
1487 "HW_ERROR_ABS_LOCK",
1488 "HW_ERROR_CAL_LOCK_FAIL",
1489 "NMI_INTERRUPT_INST_ACTION_PT",
1490 "NMI_INTERRUPT_DATA_ACTION_PT",
1491 "NMI_TRM_HW_ER",
1492 "NMI_INTERRUPT_TRM",
1493 "NMI_INTERRUPT_BREAK_POINT",
1494 "DEBUG_0",
1495 "DEBUG_1",
1496 "DEBUG_2",
1497 "DEBUG_3",
1498 };
1499
1500 static struct { char *name; u8 num; } advanced_lookup[] = {
1501 { "NMI_INTERRUPT_WDG", 0x34 },
1502 { "SYSASSERT", 0x35 },
1503 { "UCODE_VERSION_MISMATCH", 0x37 },
1504 { "BAD_COMMAND", 0x38 },
1505 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1506 { "FATAL_ERROR", 0x3D },
1507 { "NMI_TRM_HW_ERR", 0x46 },
1508 { "NMI_INTERRUPT_TRM", 0x4C },
1509 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1510 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1511 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1512 { "NMI_INTERRUPT_HOST", 0x66 },
1513 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1514 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1515 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1516 { "ADVANCED_SYSASSERT", 0 },
1517 };
1518
1519 static const char *desc_lookup(u32 num)
1520 {
1521 int i;
1522 int max = ARRAY_SIZE(desc_lookup_text);
1523
1524 if (num < max)
1525 return desc_lookup_text[num];
1526
1527 max = ARRAY_SIZE(advanced_lookup) - 1;
1528 for (i = 0; i < max; i++) {
1529 if (advanced_lookup[i].num == num)
1530 break;
1531 }
1532 return advanced_lookup[i].name;
1533 }
1534
1535 #define ERROR_START_OFFSET (1 * sizeof(u32))
1536 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1537
1538 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1539 {
1540 struct iwl_trans *trans = priv->trans;
1541 u32 base;
1542 struct iwl_error_event_table table;
1543
1544 base = priv->device_pointers.error_event_table;
1545 if (priv->cur_ucode == IWL_UCODE_INIT) {
1546 if (!base)
1547 base = priv->fw->init_errlog_ptr;
1548 } else {
1549 if (!base)
1550 base = priv->fw->inst_errlog_ptr;
1551 }
1552
1553 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1554 IWL_ERR(priv,
1555 "Not valid error log pointer 0x%08X for %s uCode\n",
1556 base,
1557 (priv->cur_ucode == IWL_UCODE_INIT)
1558 ? "Init" : "RT");
1559 return;
1560 }
1561
1562 /*TODO: Update dbgfs with ISR error stats obtained below */
1563 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1564
1565 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1566 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1567 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1568 priv->status, table.valid);
1569 }
1570
1571 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1572 table.data1, table.data2, table.line,
1573 table.blink1, table.blink2, table.ilink1,
1574 table.ilink2, table.bcon_time, table.gp1,
1575 table.gp2, table.gp3, table.ucode_ver,
1576 table.hw_ver, table.brd_ver);
1577 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1578 desc_lookup(table.error_id));
1579 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1580 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1581 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1582 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1583 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1584 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1585 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1586 IWL_ERR(priv, "0x%08X | line\n", table.line);
1587 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1588 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1589 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1590 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1591 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1592 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1593 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1594 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1595 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1596 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1597 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1598 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1599 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1600 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1601 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1602 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1603 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1604 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1605 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1606 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1607 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1608 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1609 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1610 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1611 }
1612
1613 #define EVENT_START_OFFSET (4 * sizeof(u32))
1614
1615 /**
1616 * iwl_print_event_log - Dump error event log to syslog
1617 *
1618 */
1619 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1620 u32 num_events, u32 mode,
1621 int pos, char **buf, size_t bufsz)
1622 {
1623 u32 i;
1624 u32 base; /* SRAM byte address of event log header */
1625 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1626 u32 ptr; /* SRAM byte address of log data */
1627 u32 ev, time, data; /* event log data */
1628 unsigned long reg_flags;
1629
1630 struct iwl_trans *trans = priv->trans;
1631
1632 if (num_events == 0)
1633 return pos;
1634
1635 base = priv->device_pointers.log_event_table;
1636 if (priv->cur_ucode == IWL_UCODE_INIT) {
1637 if (!base)
1638 base = priv->fw->init_evtlog_ptr;
1639 } else {
1640 if (!base)
1641 base = priv->fw->inst_evtlog_ptr;
1642 }
1643
1644 if (mode == 0)
1645 event_size = 2 * sizeof(u32);
1646 else
1647 event_size = 3 * sizeof(u32);
1648
1649 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1650
1651 /* Make sure device is powered up for SRAM reads */
1652 if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1653 return pos;
1654
1655 /* Set starting address; reads will auto-increment */
1656 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1657
1658 /* "time" is actually "data" for mode 0 (no timestamp).
1659 * place event id # at far right for easier visual parsing. */
1660 for (i = 0; i < num_events; i++) {
1661 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1662 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1663 if (mode == 0) {
1664 /* data, ev */
1665 if (bufsz) {
1666 pos += scnprintf(*buf + pos, bufsz - pos,
1667 "EVT_LOG:0x%08x:%04u\n",
1668 time, ev);
1669 } else {
1670 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1671 time, ev);
1672 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1673 time, ev);
1674 }
1675 } else {
1676 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1677 if (bufsz) {
1678 pos += scnprintf(*buf + pos, bufsz - pos,
1679 "EVT_LOGT:%010u:0x%08x:%04u\n",
1680 time, data, ev);
1681 } else {
1682 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1683 time, data, ev);
1684 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1685 data, ev);
1686 }
1687 }
1688 }
1689
1690 /* Allow device to power down */
1691 iwl_trans_release_nic_access(trans, &reg_flags);
1692 return pos;
1693 }
1694
1695 /**
1696 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1697 */
1698 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1699 u32 num_wraps, u32 next_entry,
1700 u32 size, u32 mode,
1701 int pos, char **buf, size_t bufsz)
1702 {
1703 /*
1704 * display the newest DEFAULT_LOG_ENTRIES entries
1705 * i.e the entries just before the next ont that uCode would fill.
1706 */
1707 if (num_wraps) {
1708 if (next_entry < size) {
1709 pos = iwl_print_event_log(priv,
1710 capacity - (size - next_entry),
1711 size - next_entry, mode,
1712 pos, buf, bufsz);
1713 pos = iwl_print_event_log(priv, 0,
1714 next_entry, mode,
1715 pos, buf, bufsz);
1716 } else
1717 pos = iwl_print_event_log(priv, next_entry - size,
1718 size, mode, pos, buf, bufsz);
1719 } else {
1720 if (next_entry < size) {
1721 pos = iwl_print_event_log(priv, 0, next_entry,
1722 mode, pos, buf, bufsz);
1723 } else {
1724 pos = iwl_print_event_log(priv, next_entry - size,
1725 size, mode, pos, buf, bufsz);
1726 }
1727 }
1728 return pos;
1729 }
1730
1731 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1732
1733 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1734 char **buf)
1735 {
1736 u32 base; /* SRAM byte address of event log header */
1737 u32 capacity; /* event log capacity in # entries */
1738 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1739 u32 num_wraps; /* # times uCode wrapped to top of log */
1740 u32 next_entry; /* index of next entry to be written by uCode */
1741 u32 size; /* # entries that we'll print */
1742 u32 logsize;
1743 int pos = 0;
1744 size_t bufsz = 0;
1745 struct iwl_trans *trans = priv->trans;
1746
1747 base = priv->device_pointers.log_event_table;
1748 if (priv->cur_ucode == IWL_UCODE_INIT) {
1749 logsize = priv->fw->init_evtlog_size;
1750 if (!base)
1751 base = priv->fw->init_evtlog_ptr;
1752 } else {
1753 logsize = priv->fw->inst_evtlog_size;
1754 if (!base)
1755 base = priv->fw->inst_evtlog_ptr;
1756 }
1757
1758 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1759 IWL_ERR(priv,
1760 "Invalid event log pointer 0x%08X for %s uCode\n",
1761 base,
1762 (priv->cur_ucode == IWL_UCODE_INIT)
1763 ? "Init" : "RT");
1764 return -EINVAL;
1765 }
1766
1767 /* event log header */
1768 capacity = iwl_trans_read_mem32(trans, base);
1769 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1770 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1771 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1772
1773 if (capacity > logsize) {
1774 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1775 "entries\n", capacity, logsize);
1776 capacity = logsize;
1777 }
1778
1779 if (next_entry > logsize) {
1780 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1781 next_entry, logsize);
1782 next_entry = logsize;
1783 }
1784
1785 size = num_wraps ? capacity : next_entry;
1786
1787 /* bail out if nothing in log */
1788 if (size == 0) {
1789 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1790 return pos;
1791 }
1792
1793 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1794 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1795 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1796 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1797 size);
1798
1799 #ifdef CONFIG_IWLWIFI_DEBUG
1800 if (buf) {
1801 if (full_log)
1802 bufsz = capacity * 48;
1803 else
1804 bufsz = size * 48;
1805 *buf = kmalloc(bufsz, GFP_KERNEL);
1806 if (!*buf)
1807 return -ENOMEM;
1808 }
1809 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1810 /*
1811 * if uCode has wrapped back to top of log,
1812 * start at the oldest entry,
1813 * i.e the next one that uCode would fill.
1814 */
1815 if (num_wraps)
1816 pos = iwl_print_event_log(priv, next_entry,
1817 capacity - next_entry, mode,
1818 pos, buf, bufsz);
1819 /* (then/else) start at top of log */
1820 pos = iwl_print_event_log(priv, 0,
1821 next_entry, mode, pos, buf, bufsz);
1822 } else
1823 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1824 next_entry, size, mode,
1825 pos, buf, bufsz);
1826 #else
1827 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1828 next_entry, size, mode,
1829 pos, buf, bufsz);
1830 #endif
1831 return pos;
1832 }
1833
1834 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1835 {
1836 unsigned int reload_msec;
1837 unsigned long reload_jiffies;
1838
1839 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1840 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1841
1842 /* uCode is no longer loaded. */
1843 priv->ucode_loaded = false;
1844
1845 /* Set the FW error flag -- cleared on iwl_down */
1846 set_bit(STATUS_FW_ERROR, &priv->status);
1847
1848 iwl_abort_notification_waits(&priv->notif_wait);
1849
1850 /* Keep the restart process from trying to send host
1851 * commands by clearing the ready bit */
1852 clear_bit(STATUS_READY, &priv->status);
1853
1854 if (!ondemand) {
1855 /*
1856 * If firmware keep reloading, then it indicate something
1857 * serious wrong and firmware having problem to recover
1858 * from it. Instead of keep trying which will fill the syslog
1859 * and hang the system, let's just stop it
1860 */
1861 reload_jiffies = jiffies;
1862 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1863 (long) priv->reload_jiffies);
1864 priv->reload_jiffies = reload_jiffies;
1865 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1866 priv->reload_count++;
1867 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1868 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1869 return;
1870 }
1871 } else
1872 priv->reload_count = 0;
1873 }
1874
1875 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1876 if (iwlwifi_mod_params.restart_fw) {
1877 IWL_DEBUG_FW_ERRORS(priv,
1878 "Restarting adapter due to uCode error.\n");
1879 queue_work(priv->workqueue, &priv->restart);
1880 } else
1881 IWL_DEBUG_FW_ERRORS(priv,
1882 "Detected FW error, but not restarting\n");
1883 }
1884 }
1885
1886 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1887 {
1888 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1889
1890 IWL_ERR(priv, "Loaded firmware version: %s\n",
1891 priv->fw->fw_version);
1892
1893 iwl_dump_nic_error_log(priv);
1894 iwl_dump_nic_event_log(priv, false, NULL);
1895
1896 iwlagn_fw_error(priv, false);
1897 }
1898
1899 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1900 {
1901 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1902
1903 if (!iwl_check_for_ct_kill(priv)) {
1904 IWL_ERR(priv, "Restarting adapter queue is full\n");
1905 iwlagn_fw_error(priv, false);
1906 }
1907 }
1908
1909 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1910
1911 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1912 {
1913 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1914
1915 /* SKU Control */
1916 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1917 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1918 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1919 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1920 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1921 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1922 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1923
1924 /* write radio config values to register */
1925 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1926 u32 reg_val =
1927 priv->nvm_data->radio_cfg_type <<
1928 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1929 priv->nvm_data->radio_cfg_step <<
1930 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1931 priv->nvm_data->radio_cfg_dash <<
1932 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1933
1934 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1935 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1936 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1937 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1938 reg_val);
1939
1940 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
1941 priv->nvm_data->radio_cfg_type,
1942 priv->nvm_data->radio_cfg_step,
1943 priv->nvm_data->radio_cfg_dash);
1944 } else {
1945 WARN_ON(1);
1946 }
1947
1948 /* set CSR_HW_CONFIG_REG for uCode use */
1949 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
1950 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
1951 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
1952
1953 /* W/A : NIC is stuck in a reset state after Early PCIe power off
1954 * (PCIe power is lost before PERST# is asserted),
1955 * causing ME FW to lose ownership and not being able to obtain it back.
1956 */
1957 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
1958 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
1959 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
1960
1961 if (priv->lib->nic_config)
1962 priv->lib->nic_config(priv);
1963 }
1964
1965 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
1966 {
1967 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1968
1969 clear_bit(STATUS_READY, &priv->status);
1970 IWL_ERR(priv, "RF is used by WiMAX\n");
1971 }
1972
1973 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
1974 {
1975 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1976 int mq = priv->queue_to_mac80211[queue];
1977
1978 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1979 return;
1980
1981 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
1982 IWL_DEBUG_TX_QUEUES(priv,
1983 "queue %d (mac80211 %d) already stopped\n",
1984 queue, mq);
1985 return;
1986 }
1987
1988 set_bit(mq, &priv->transport_queue_stop);
1989 ieee80211_stop_queue(priv->hw, mq);
1990 }
1991
1992 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
1993 {
1994 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1995 int mq = priv->queue_to_mac80211[queue];
1996
1997 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1998 return;
1999
2000 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2001 IWL_DEBUG_TX_QUEUES(priv,
2002 "queue %d (mac80211 %d) already awake\n",
2003 queue, mq);
2004 return;
2005 }
2006
2007 clear_bit(mq, &priv->transport_queue_stop);
2008
2009 if (!priv->passive_no_rx)
2010 ieee80211_wake_queue(priv->hw, mq);
2011 }
2012
2013 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2014 {
2015 int mq;
2016
2017 if (!priv->passive_no_rx)
2018 return;
2019
2020 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2021 if (!test_bit(mq, &priv->transport_queue_stop)) {
2022 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2023 ieee80211_wake_queue(priv->hw, mq);
2024 } else {
2025 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2026 }
2027 }
2028
2029 priv->passive_no_rx = false;
2030 }
2031
2032 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2033 {
2034 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2035 struct ieee80211_tx_info *info;
2036
2037 info = IEEE80211_SKB_CB(skb);
2038 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2039 ieee80211_free_txskb(priv->hw, skb);
2040 }
2041
2042 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2043 {
2044 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2045
2046 if (state)
2047 set_bit(STATUS_RF_KILL_HW, &priv->status);
2048 else
2049 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2050
2051 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2052
2053 return false;
2054 }
2055
2056 static void iwl_napi_add(struct iwl_op_mode *op_mode,
2057 struct napi_struct *napi,
2058 struct net_device *napi_dev,
2059 int (*poll)(struct napi_struct *, int),
2060 int weight)
2061 {
2062 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2063
2064 ieee80211_napi_add(priv->hw, napi, napi_dev, poll, weight);
2065 }
2066
2067 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2068 .start = iwl_op_mode_dvm_start,
2069 .stop = iwl_op_mode_dvm_stop,
2070 .rx = iwl_rx_dispatch,
2071 .queue_full = iwl_stop_sw_queue,
2072 .queue_not_full = iwl_wake_sw_queue,
2073 .hw_rf_kill = iwl_set_hw_rfkill_state,
2074 .free_skb = iwl_free_skb,
2075 .nic_error = iwl_nic_error,
2076 .cmd_queue_full = iwl_cmd_queue_full,
2077 .nic_config = iwl_nic_config,
2078 .wimax_active = iwl_wimax_active,
2079 .napi_add = iwl_napi_add,
2080 };
2081
2082 /*****************************************************************************
2083 *
2084 * driver and module entry point
2085 *
2086 *****************************************************************************/
2087 static int __init iwl_init(void)
2088 {
2089
2090 int ret;
2091
2092 ret = iwlagn_rate_control_register();
2093 if (ret) {
2094 pr_err("Unable to register rate control algorithm: %d\n", ret);
2095 return ret;
2096 }
2097
2098 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2099 if (ret) {
2100 pr_err("Unable to register op_mode: %d\n", ret);
2101 iwlagn_rate_control_unregister();
2102 }
2103
2104 return ret;
2105 }
2106 module_init(iwl_init);
2107
2108 static void __exit iwl_exit(void)
2109 {
2110 iwl_opmode_deregister("iwldvm");
2111 iwlagn_rate_control_unregister();
2112 }
2113 module_exit(iwl_exit);
Linux kernel - Deliverables
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