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Linux 3.11-rc3
[cris-mirror.git] / drivers / net / wireless / iwlwifi / dvm / main.c
blob3952ddf2ddb2bb596ffca3d0ff951238774bdb98
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2013 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 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 if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
357 return;
358
359 /* Set starting address; reads will auto-increment */
360 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
361
362 /*
363 * Refuse to read more than would have fit into the log from
364 * the current start_idx. This used to happen due to the race
365 * described below, but now WARN because the code below should
366 * prevent it from happening here.
367 */
368 if (WARN_ON(num_events > capacity - start_idx))
369 num_events = capacity - start_idx;
370
371 /*
372 * "time" is actually "data" for mode 0 (no timestamp).
373 * place event id # at far right for easier visual parsing.
374 */
375 for (i = 0; i < num_events; i++) {
376 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
377 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
378 if (mode == 0) {
379 trace_iwlwifi_dev_ucode_cont_event(
380 priv->trans->dev, 0, time, ev);
381 } else {
382 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
383 trace_iwlwifi_dev_ucode_cont_event(
384 priv->trans->dev, time, data, ev);
385 }
386 }
387 /* Allow device to power down */
388 iwl_trans_release_nic_access(priv->trans, &reg_flags);
389 }
390
391 static void iwl_continuous_event_trace(struct iwl_priv *priv)
392 {
393 u32 capacity; /* event log capacity in # entries */
394 struct {
395 u32 capacity;
396 u32 mode;
397 u32 wrap_counter;
398 u32 write_counter;
399 } __packed read;
400 u32 base; /* SRAM byte address of event log header */
401 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
402 u32 num_wraps; /* # times uCode wrapped to top of log */
403 u32 next_entry; /* index of next entry to be written by uCode */
404
405 base = priv->device_pointers.log_event_table;
406 if (iwlagn_hw_valid_rtc_data_addr(base)) {
407 iwl_trans_read_mem_bytes(priv->trans, base,
408 &read, sizeof(read));
409 capacity = read.capacity;
410 mode = read.mode;
411 num_wraps = read.wrap_counter;
412 next_entry = read.write_counter;
413 } else
414 return;
415
416 /*
417 * Unfortunately, the uCode doesn't use temporary variables.
418 * Therefore, it can happen that we read next_entry == capacity,
419 * which really means next_entry == 0.
420 */
421 if (unlikely(next_entry == capacity))
422 next_entry = 0;
423 /*
424 * Additionally, the uCode increases the write pointer before
425 * the wraps counter, so if the write pointer is smaller than
426 * the old write pointer (wrap occurred) but we read that no
427 * wrap occurred, we actually read between the next_entry and
428 * num_wraps update (this does happen in practice!!) -- take
429 * that into account by increasing num_wraps.
430 */
431 if (unlikely(next_entry < priv->event_log.next_entry &&
432 num_wraps == priv->event_log.num_wraps))
433 num_wraps++;
434
435 if (num_wraps == priv->event_log.num_wraps) {
436 iwl_print_cont_event_trace(
437 priv, base, priv->event_log.next_entry,
438 next_entry - priv->event_log.next_entry,
439 capacity, mode);
440
441 priv->event_log.non_wraps_count++;
442 } else {
443 if (num_wraps - priv->event_log.num_wraps > 1)
444 priv->event_log.wraps_more_count++;
445 else
446 priv->event_log.wraps_once_count++;
447
448 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
449 num_wraps - priv->event_log.num_wraps,
450 next_entry, priv->event_log.next_entry);
451
452 if (next_entry < priv->event_log.next_entry) {
453 iwl_print_cont_event_trace(
454 priv, base, priv->event_log.next_entry,
455 capacity - priv->event_log.next_entry,
456 capacity, mode);
457
458 iwl_print_cont_event_trace(
459 priv, base, 0, next_entry, capacity, mode);
460 } else {
461 iwl_print_cont_event_trace(
462 priv, base, next_entry,
463 capacity - next_entry,
464 capacity, mode);
465
466 iwl_print_cont_event_trace(
467 priv, base, 0, next_entry, capacity, mode);
468 }
469 }
470
471 priv->event_log.num_wraps = num_wraps;
472 priv->event_log.next_entry = next_entry;
473 }
474
475 /**
476 * iwl_bg_ucode_trace - Timer callback to log ucode event
477 *
478 * The timer is continually set to execute every
479 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
480 * this function is to perform continuous uCode event logging operation
481 * if enabled
482 */
483 static void iwl_bg_ucode_trace(unsigned long data)
484 {
485 struct iwl_priv *priv = (struct iwl_priv *)data;
486
487 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
488 return;
489
490 if (priv->event_log.ucode_trace) {
491 iwl_continuous_event_trace(priv);
492 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
493 mod_timer(&priv->ucode_trace,
494 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
495 }
496 }
497
498 static void iwl_bg_tx_flush(struct work_struct *work)
499 {
500 struct iwl_priv *priv =
501 container_of(work, struct iwl_priv, tx_flush);
502
503 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
504 return;
505
506 /* do nothing if rf-kill is on */
507 if (!iwl_is_ready_rf(priv))
508 return;
509
510 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
511 iwlagn_dev_txfifo_flush(priv);
512 }
513
514 /*
515 * queue/FIFO/AC mapping definitions
516 */
517
518 static const u8 iwlagn_bss_ac_to_fifo[] = {
519 IWL_TX_FIFO_VO,
520 IWL_TX_FIFO_VI,
521 IWL_TX_FIFO_BE,
522 IWL_TX_FIFO_BK,
523 };
524
525 static const u8 iwlagn_bss_ac_to_queue[] = {
526 0, 1, 2, 3,
527 };
528
529 static const u8 iwlagn_pan_ac_to_fifo[] = {
530 IWL_TX_FIFO_VO_IPAN,
531 IWL_TX_FIFO_VI_IPAN,
532 IWL_TX_FIFO_BE_IPAN,
533 IWL_TX_FIFO_BK_IPAN,
534 };
535
536 static const u8 iwlagn_pan_ac_to_queue[] = {
537 7, 6, 5, 4,
538 };
539
540 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
541 {
542 int i;
543
544 /*
545 * The default context is always valid,
546 * the PAN context depends on uCode.
547 */
548 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
549 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
550 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
551
552 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
553 priv->contexts[i].ctxid = i;
554
555 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
556 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
557 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
558 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
559 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
560 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
561 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
562 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
563 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
564 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
565 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
566 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
567 BIT(NL80211_IFTYPE_STATION);
568 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
569 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
570 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
571 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
572 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
573 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
574 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
575 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
576
577 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
578 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
579 REPLY_WIPAN_RXON_TIMING;
580 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
581 REPLY_WIPAN_RXON_ASSOC;
582 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
583 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
584 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
585 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
586 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
587 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
588 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
589
590 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
591 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
592 BIT(NL80211_IFTYPE_P2P_CLIENT) |
593 BIT(NL80211_IFTYPE_P2P_GO);
594
595 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
596 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
597 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
598 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
599 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
600 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
601 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
602 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
603
604 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
605 }
606
607 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
608 {
609 struct iwl_ct_kill_config cmd;
610 struct iwl_ct_kill_throttling_config adv_cmd;
611 int ret = 0;
612
613 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
614 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
615
616 priv->thermal_throttle.ct_kill_toggle = false;
617
618 if (priv->lib->support_ct_kill_exit) {
619 adv_cmd.critical_temperature_enter =
620 cpu_to_le32(priv->hw_params.ct_kill_threshold);
621 adv_cmd.critical_temperature_exit =
622 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
623
624 ret = iwl_dvm_send_cmd_pdu(priv,
625 REPLY_CT_KILL_CONFIG_CMD,
626 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
627 if (ret)
628 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
629 else
630 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
631 "succeeded, critical temperature enter is %d,"
632 "exit is %d\n",
633 priv->hw_params.ct_kill_threshold,
634 priv->hw_params.ct_kill_exit_threshold);
635 } else {
636 cmd.critical_temperature_R =
637 cpu_to_le32(priv->hw_params.ct_kill_threshold);
638
639 ret = iwl_dvm_send_cmd_pdu(priv,
640 REPLY_CT_KILL_CONFIG_CMD,
641 CMD_SYNC, sizeof(cmd), &cmd);
642 if (ret)
643 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
644 else
645 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
646 "succeeded, "
647 "critical temperature is %d\n",
648 priv->hw_params.ct_kill_threshold);
649 }
650 }
651
652 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
653 {
654 struct iwl_calib_cfg_cmd calib_cfg_cmd;
655 struct iwl_host_cmd cmd = {
656 .id = CALIBRATION_CFG_CMD,
657 .len = { sizeof(struct iwl_calib_cfg_cmd), },
658 .data = { &calib_cfg_cmd, },
659 };
660
661 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
662 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
663 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
664
665 return iwl_dvm_send_cmd(priv, &cmd);
666 }
667
668
669 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
670 {
671 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
672 .valid = cpu_to_le32(valid_tx_ant),
673 };
674
675 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
676 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
677 return iwl_dvm_send_cmd_pdu(priv,
678 TX_ANT_CONFIGURATION_CMD,
679 CMD_SYNC,
680 sizeof(struct iwl_tx_ant_config_cmd),
681 &tx_ant_cmd);
682 } else {
683 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
684 return -EOPNOTSUPP;
685 }
686 }
687
688 static void iwl_send_bt_config(struct iwl_priv *priv)
689 {
690 struct iwl_bt_cmd bt_cmd = {
691 .lead_time = BT_LEAD_TIME_DEF,
692 .max_kill = BT_MAX_KILL_DEF,
693 .kill_ack_mask = 0,
694 .kill_cts_mask = 0,
695 };
696
697 if (!iwlwifi_mod_params.bt_coex_active)
698 bt_cmd.flags = BT_COEX_DISABLE;
699 else
700 bt_cmd.flags = BT_COEX_ENABLE;
701
702 priv->bt_enable_flag = bt_cmd.flags;
703 IWL_DEBUG_INFO(priv, "BT coex %s\n",
704 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
705
706 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
707 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
708 IWL_ERR(priv, "failed to send BT Coex Config\n");
709 }
710
711 /**
712 * iwl_alive_start - called after REPLY_ALIVE notification received
713 * from protocol/runtime uCode (initialization uCode's
714 * Alive gets handled by iwl_init_alive_start()).
715 */
716 int iwl_alive_start(struct iwl_priv *priv)
717 {
718 int ret = 0;
719 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
720
721 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
722
723 /* After the ALIVE response, we can send host commands to the uCode */
724 set_bit(STATUS_ALIVE, &priv->status);
725
726 if (iwl_is_rfkill(priv))
727 return -ERFKILL;
728
729 if (priv->event_log.ucode_trace) {
730 /* start collecting data now */
731 mod_timer(&priv->ucode_trace, jiffies);
732 }
733
734 /* download priority table before any calibration request */
735 if (priv->lib->bt_params &&
736 priv->lib->bt_params->advanced_bt_coexist) {
737 /* Configure Bluetooth device coexistence support */
738 if (priv->lib->bt_params->bt_sco_disable)
739 priv->bt_enable_pspoll = false;
740 else
741 priv->bt_enable_pspoll = true;
742
743 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
744 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
745 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
746 iwlagn_send_advance_bt_config(priv);
747 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
748 priv->cur_rssi_ctx = NULL;
749
750 iwl_send_prio_tbl(priv);
751
752 /* FIXME: w/a to force change uCode BT state machine */
753 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
754 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
755 if (ret)
756 return ret;
757 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
758 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
759 if (ret)
760 return ret;
761 } else {
762 /*
763 * default is 2-wire BT coexexistence support
764 */
765 iwl_send_bt_config(priv);
766 }
767
768 /*
769 * Perform runtime calibrations, including DC calibration.
770 */
771 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
772
773 ieee80211_wake_queues(priv->hw);
774
775 /* Configure Tx antenna selection based on H/W config */
776 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
777
778 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
779 struct iwl_rxon_cmd *active_rxon =
780 (struct iwl_rxon_cmd *)&ctx->active;
781 /* apply any changes in staging */
782 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
783 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
784 } else {
785 struct iwl_rxon_context *tmp;
786 /* Initialize our rx_config data */
787 for_each_context(priv, tmp)
788 iwl_connection_init_rx_config(priv, tmp);
789
790 iwlagn_set_rxon_chain(priv, ctx);
791 }
792
793 if (!priv->wowlan) {
794 /* WoWLAN ucode will not reply in the same way, skip it */
795 iwl_reset_run_time_calib(priv);
796 }
797
798 set_bit(STATUS_READY, &priv->status);
799
800 /* Configure the adapter for unassociated operation */
801 ret = iwlagn_commit_rxon(priv, ctx);
802 if (ret)
803 return ret;
804
805 /* At this point, the NIC is initialized and operational */
806 iwl_rf_kill_ct_config(priv);
807
808 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
809
810 return iwl_power_update_mode(priv, true);
811 }
812
813 /**
814 * iwl_clear_driver_stations - clear knowledge of all stations from driver
815 * @priv: iwl priv struct
816 *
817 * This is called during iwl_down() to make sure that in the case
818 * we're coming there from a hardware restart mac80211 will be
819 * able to reconfigure stations -- if we're getting there in the
820 * normal down flow then the stations will already be cleared.
821 */
822 static void iwl_clear_driver_stations(struct iwl_priv *priv)
823 {
824 struct iwl_rxon_context *ctx;
825
826 spin_lock_bh(&priv->sta_lock);
827 memset(priv->stations, 0, sizeof(priv->stations));
828 priv->num_stations = 0;
829
830 priv->ucode_key_table = 0;
831
832 for_each_context(priv, ctx) {
833 /*
834 * Remove all key information that is not stored as part
835 * of station information since mac80211 may not have had
836 * a chance to remove all the keys. When device is
837 * reconfigured by mac80211 after an error all keys will
838 * be reconfigured.
839 */
840 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
841 ctx->key_mapping_keys = 0;
842 }
843
844 spin_unlock_bh(&priv->sta_lock);
845 }
846
847 void iwl_down(struct iwl_priv *priv)
848 {
849 int exit_pending;
850
851 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
852
853 lockdep_assert_held(&priv->mutex);
854
855 iwl_scan_cancel_timeout(priv, 200);
856
857 /*
858 * If active, scanning won't cancel it, so say it expired.
859 * No race since we hold the mutex here and a new one
860 * can't come in at this time.
861 */
862 if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT)
863 ieee80211_remain_on_channel_expired(priv->hw);
864
865 exit_pending =
866 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
867
868 iwl_clear_ucode_stations(priv, NULL);
869 iwl_dealloc_bcast_stations(priv);
870 iwl_clear_driver_stations(priv);
871
872 /* reset BT coex data */
873 priv->bt_status = 0;
874 priv->cur_rssi_ctx = NULL;
875 priv->bt_is_sco = 0;
876 if (priv->lib->bt_params)
877 priv->bt_traffic_load =
878 priv->lib->bt_params->bt_init_traffic_load;
879 else
880 priv->bt_traffic_load = 0;
881 priv->bt_full_concurrent = false;
882 priv->bt_ci_compliance = 0;
883
884 /* Wipe out the EXIT_PENDING status bit if we are not actually
885 * exiting the module */
886 if (!exit_pending)
887 clear_bit(STATUS_EXIT_PENDING, &priv->status);
888
889 if (priv->mac80211_registered)
890 ieee80211_stop_queues(priv->hw);
891
892 priv->ucode_loaded = false;
893 iwl_trans_stop_device(priv->trans);
894
895 /* Set num_aux_in_flight must be done after the transport is stopped */
896 atomic_set(&priv->num_aux_in_flight, 0);
897
898 /* Clear out all status bits but a few that are stable across reset */
899 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
900 STATUS_RF_KILL_HW |
901 test_bit(STATUS_FW_ERROR, &priv->status) <<
902 STATUS_FW_ERROR |
903 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
904 STATUS_EXIT_PENDING;
905
906 dev_kfree_skb(priv->beacon_skb);
907 priv->beacon_skb = NULL;
908 }
909
910 /*****************************************************************************
911 *
912 * Workqueue callbacks
913 *
914 *****************************************************************************/
915
916 static void iwl_bg_run_time_calib_work(struct work_struct *work)
917 {
918 struct iwl_priv *priv = container_of(work, struct iwl_priv,
919 run_time_calib_work);
920
921 mutex_lock(&priv->mutex);
922
923 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
924 test_bit(STATUS_SCANNING, &priv->status)) {
925 mutex_unlock(&priv->mutex);
926 return;
927 }
928
929 if (priv->start_calib) {
930 iwl_chain_noise_calibration(priv);
931 iwl_sensitivity_calibration(priv);
932 }
933
934 mutex_unlock(&priv->mutex);
935 }
936
937 void iwlagn_prepare_restart(struct iwl_priv *priv)
938 {
939 bool bt_full_concurrent;
940 u8 bt_ci_compliance;
941 u8 bt_load;
942 u8 bt_status;
943 bool bt_is_sco;
944 int i;
945
946 lockdep_assert_held(&priv->mutex);
947
948 priv->is_open = 0;
949
950 /*
951 * __iwl_down() will clear the BT status variables,
952 * which is correct, but when we restart we really
953 * want to keep them so restore them afterwards.
954 *
955 * The restart process will later pick them up and
956 * re-configure the hw when we reconfigure the BT
957 * command.
958 */
959 bt_full_concurrent = priv->bt_full_concurrent;
960 bt_ci_compliance = priv->bt_ci_compliance;
961 bt_load = priv->bt_traffic_load;
962 bt_status = priv->bt_status;
963 bt_is_sco = priv->bt_is_sco;
964
965 iwl_down(priv);
966
967 priv->bt_full_concurrent = bt_full_concurrent;
968 priv->bt_ci_compliance = bt_ci_compliance;
969 priv->bt_traffic_load = bt_load;
970 priv->bt_status = bt_status;
971 priv->bt_is_sco = bt_is_sco;
972
973 /* reset aggregation queues */
974 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
975 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
976 /* and stop counts */
977 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
978 atomic_set(&priv->queue_stop_count[i], 0);
979
980 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
981 }
982
983 static void iwl_bg_restart(struct work_struct *data)
984 {
985 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
986
987 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
988 return;
989
990 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
991 mutex_lock(&priv->mutex);
992 iwlagn_prepare_restart(priv);
993 mutex_unlock(&priv->mutex);
994 iwl_cancel_deferred_work(priv);
995 if (priv->mac80211_registered)
996 ieee80211_restart_hw(priv->hw);
997 else
998 IWL_ERR(priv,
999 "Cannot request restart before registrating with mac80211");
1000 } else {
1001 WARN_ON(1);
1002 }
1003 }
1004
1005
1006
1007
1008 void iwlagn_disable_roc(struct iwl_priv *priv)
1009 {
1010 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1011
1012 lockdep_assert_held(&priv->mutex);
1013
1014 if (!priv->hw_roc_setup)
1015 return;
1016
1017 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1018 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1019
1020 priv->hw_roc_channel = NULL;
1021
1022 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1023
1024 iwlagn_commit_rxon(priv, ctx);
1025
1026 ctx->is_active = false;
1027 priv->hw_roc_setup = false;
1028 }
1029
1030 static void iwlagn_disable_roc_work(struct work_struct *work)
1031 {
1032 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1033 hw_roc_disable_work.work);
1034
1035 mutex_lock(&priv->mutex);
1036 iwlagn_disable_roc(priv);
1037 mutex_unlock(&priv->mutex);
1038 }
1039
1040 /*****************************************************************************
1041 *
1042 * driver setup and teardown
1043 *
1044 *****************************************************************************/
1045
1046 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1047 {
1048 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1049
1050 INIT_WORK(&priv->restart, iwl_bg_restart);
1051 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1052 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1053 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1054 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1055 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1056 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1057 iwlagn_disable_roc_work);
1058
1059 iwl_setup_scan_deferred_work(priv);
1060
1061 if (priv->lib->bt_params)
1062 iwlagn_bt_setup_deferred_work(priv);
1063
1064 init_timer(&priv->statistics_periodic);
1065 priv->statistics_periodic.data = (unsigned long)priv;
1066 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1067
1068 init_timer(&priv->ucode_trace);
1069 priv->ucode_trace.data = (unsigned long)priv;
1070 priv->ucode_trace.function = iwl_bg_ucode_trace;
1071 }
1072
1073 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1074 {
1075 if (priv->lib->bt_params)
1076 iwlagn_bt_cancel_deferred_work(priv);
1077
1078 cancel_work_sync(&priv->run_time_calib_work);
1079 cancel_work_sync(&priv->beacon_update);
1080
1081 iwl_cancel_scan_deferred_work(priv);
1082
1083 cancel_work_sync(&priv->bt_full_concurrency);
1084 cancel_work_sync(&priv->bt_runtime_config);
1085 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1086
1087 del_timer_sync(&priv->statistics_periodic);
1088 del_timer_sync(&priv->ucode_trace);
1089 }
1090
1091 static int iwl_init_drv(struct iwl_priv *priv)
1092 {
1093 spin_lock_init(&priv->sta_lock);
1094
1095 mutex_init(&priv->mutex);
1096
1097 INIT_LIST_HEAD(&priv->calib_results);
1098
1099 priv->band = IEEE80211_BAND_2GHZ;
1100
1101 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1102
1103 priv->iw_mode = NL80211_IFTYPE_STATION;
1104 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1105 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1106 priv->agg_tids_count = 0;
1107
1108 priv->rx_statistics_jiffies = jiffies;
1109
1110 /* Choose which receivers/antennas to use */
1111 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1112
1113 iwl_init_scan_params(priv);
1114
1115 /* init bt coex */
1116 if (priv->lib->bt_params &&
1117 priv->lib->bt_params->advanced_bt_coexist) {
1118 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1119 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1120 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1121 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1122 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1123 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1124 }
1125
1126 return 0;
1127 }
1128
1129 static void iwl_uninit_drv(struct iwl_priv *priv)
1130 {
1131 kfree(priv->scan_cmd);
1132 kfree(priv->beacon_cmd);
1133 kfree(rcu_dereference_raw(priv->noa_data));
1134 iwl_calib_free_results(priv);
1135 #ifdef CONFIG_IWLWIFI_DEBUGFS
1136 kfree(priv->wowlan_sram);
1137 #endif
1138 }
1139
1140 static void iwl_set_hw_params(struct iwl_priv *priv)
1141 {
1142 if (priv->cfg->ht_params)
1143 priv->hw_params.use_rts_for_aggregation =
1144 priv->cfg->ht_params->use_rts_for_aggregation;
1145
1146 /* Device-specific setup */
1147 priv->lib->set_hw_params(priv);
1148 }
1149
1150
1151
1152 /* show what optional capabilities we have */
1153 static void iwl_option_config(struct iwl_priv *priv)
1154 {
1155 #ifdef CONFIG_IWLWIFI_DEBUG
1156 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1157 #else
1158 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1159 #endif
1160
1161 #ifdef CONFIG_IWLWIFI_DEBUGFS
1162 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1163 #else
1164 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1165 #endif
1166
1167 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1168 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1169 #else
1170 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1171 #endif
1172
1173 #ifdef CONFIG_IWLWIFI_P2P
1174 IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1175 #else
1176 IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1177 #endif
1178 }
1179
1180 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1181 {
1182 struct iwl_nvm_data *data = priv->nvm_data;
1183 char *debug_msg;
1184
1185 if (data->sku_cap_11n_enable &&
1186 !priv->cfg->ht_params) {
1187 IWL_ERR(priv, "Invalid 11n configuration\n");
1188 return -EINVAL;
1189 }
1190
1191 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1192 !data->sku_cap_band_52GHz_enable) {
1193 IWL_ERR(priv, "Invalid device sku\n");
1194 return -EINVAL;
1195 }
1196
1197 debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
1198 IWL_DEBUG_INFO(priv, debug_msg,
1199 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1200 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1201 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1202
1203 priv->hw_params.tx_chains_num =
1204 num_of_ant(data->valid_tx_ant);
1205 if (priv->cfg->rx_with_siso_diversity)
1206 priv->hw_params.rx_chains_num = 1;
1207 else
1208 priv->hw_params.rx_chains_num =
1209 num_of_ant(data->valid_rx_ant);
1210
1211 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1212 data->valid_tx_ant,
1213 data->valid_rx_ant);
1214
1215 return 0;
1216 }
1217
1218 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1219 const struct iwl_cfg *cfg,
1220 const struct iwl_fw *fw,
1221 struct dentry *dbgfs_dir)
1222 {
1223 struct iwl_priv *priv;
1224 struct ieee80211_hw *hw;
1225 struct iwl_op_mode *op_mode;
1226 u16 num_mac;
1227 u32 ucode_flags;
1228 struct iwl_trans_config trans_cfg = {};
1229 static const u8 no_reclaim_cmds[] = {
1230 REPLY_RX_PHY_CMD,
1231 REPLY_RX_MPDU_CMD,
1232 REPLY_COMPRESSED_BA,
1233 STATISTICS_NOTIFICATION,
1234 REPLY_TX,
1235 };
1236 int i;
1237
1238 /************************
1239 * 1. Allocating HW data
1240 ************************/
1241 hw = iwl_alloc_all();
1242 if (!hw) {
1243 pr_err("%s: Cannot allocate network device\n", cfg->name);
1244 goto out;
1245 }
1246
1247 op_mode = hw->priv;
1248 op_mode->ops = &iwl_dvm_ops;
1249 priv = IWL_OP_MODE_GET_DVM(op_mode);
1250 priv->trans = trans;
1251 priv->dev = trans->dev;
1252 priv->cfg = cfg;
1253 priv->fw = fw;
1254
1255 switch (priv->cfg->device_family) {
1256 case IWL_DEVICE_FAMILY_1000:
1257 case IWL_DEVICE_FAMILY_100:
1258 priv->lib = &iwl_dvm_1000_cfg;
1259 break;
1260 case IWL_DEVICE_FAMILY_2000:
1261 priv->lib = &iwl_dvm_2000_cfg;
1262 break;
1263 case IWL_DEVICE_FAMILY_105:
1264 priv->lib = &iwl_dvm_105_cfg;
1265 break;
1266 case IWL_DEVICE_FAMILY_2030:
1267 case IWL_DEVICE_FAMILY_135:
1268 priv->lib = &iwl_dvm_2030_cfg;
1269 break;
1270 case IWL_DEVICE_FAMILY_5000:
1271 priv->lib = &iwl_dvm_5000_cfg;
1272 break;
1273 case IWL_DEVICE_FAMILY_5150:
1274 priv->lib = &iwl_dvm_5150_cfg;
1275 break;
1276 case IWL_DEVICE_FAMILY_6000:
1277 case IWL_DEVICE_FAMILY_6000i:
1278 priv->lib = &iwl_dvm_6000_cfg;
1279 break;
1280 case IWL_DEVICE_FAMILY_6005:
1281 priv->lib = &iwl_dvm_6005_cfg;
1282 break;
1283 case IWL_DEVICE_FAMILY_6050:
1284 case IWL_DEVICE_FAMILY_6150:
1285 priv->lib = &iwl_dvm_6050_cfg;
1286 break;
1287 case IWL_DEVICE_FAMILY_6030:
1288 priv->lib = &iwl_dvm_6030_cfg;
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 /* bt channel inhibition enabled*/
1351 priv->bt_ch_announce = true;
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->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1380 priv->eeprom_blob,
1381 priv->eeprom_blob_size);
1382 if (!priv->nvm_data)
1383 goto out_free_eeprom_blob;
1384
1385 if (iwl_nvm_check_version(priv->nvm_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->nvm_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->nvm_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->nvm_data->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
1447 iwl_power_initialize(priv);
1448 iwl_tt_initialize(priv);
1449
1450 snprintf(priv->hw->wiphy->fw_version,
1451 sizeof(priv->hw->wiphy->fw_version),
1452 "%s", fw->fw_version);
1453
1454 priv->new_scan_threshold_behaviour =
1455 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1456
1457 priv->phy_calib_chain_noise_reset_cmd =
1458 fw->ucode_capa.standard_phy_calibration_size;
1459 priv->phy_calib_chain_noise_gain_cmd =
1460 fw->ucode_capa.standard_phy_calibration_size + 1;
1461
1462 /* initialize all valid contexts */
1463 iwl_init_context(priv, ucode_flags);
1464
1465 /**************************************************
1466 * This is still part of probe() in a sense...
1467 *
1468 * 7. Setup and register with mac80211 and debugfs
1469 **************************************************/
1470 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1471 goto out_destroy_workqueue;
1472
1473 if (iwl_dbgfs_register(priv, dbgfs_dir))
1474 goto out_mac80211_unregister;
1475
1476 return op_mode;
1477
1478 out_mac80211_unregister:
1479 iwlagn_mac_unregister(priv);
1480 out_destroy_workqueue:
1481 iwl_tt_exit(priv);
1482 iwl_cancel_deferred_work(priv);
1483 destroy_workqueue(priv->workqueue);
1484 priv->workqueue = NULL;
1485 iwl_uninit_drv(priv);
1486 out_free_eeprom_blob:
1487 kfree(priv->eeprom_blob);
1488 out_free_eeprom:
1489 iwl_free_nvm_data(priv->nvm_data);
1490 out_free_hw:
1491 ieee80211_free_hw(priv->hw);
1492 out:
1493 op_mode = NULL;
1494 return op_mode;
1495 }
1496
1497 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1498 {
1499 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1500
1501 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1502
1503 iwlagn_mac_unregister(priv);
1504
1505 iwl_tt_exit(priv);
1506
1507 kfree(priv->eeprom_blob);
1508 iwl_free_nvm_data(priv->nvm_data);
1509
1510 /*netif_stop_queue(dev); */
1511 flush_workqueue(priv->workqueue);
1512
1513 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1514 * priv->workqueue... so we can't take down the workqueue
1515 * until now... */
1516 destroy_workqueue(priv->workqueue);
1517 priv->workqueue = NULL;
1518
1519 iwl_uninit_drv(priv);
1520
1521 dev_kfree_skb(priv->beacon_skb);
1522
1523 iwl_trans_stop_hw(priv->trans, true);
1524 ieee80211_free_hw(priv->hw);
1525 }
1526
1527 static const char * const desc_lookup_text[] = {
1528 "OK",
1529 "FAIL",
1530 "BAD_PARAM",
1531 "BAD_CHECKSUM",
1532 "NMI_INTERRUPT_WDG",
1533 "SYSASSERT",
1534 "FATAL_ERROR",
1535 "BAD_COMMAND",
1536 "HW_ERROR_TUNE_LOCK",
1537 "HW_ERROR_TEMPERATURE",
1538 "ILLEGAL_CHAN_FREQ",
1539 "VCC_NOT_STABLE",
1540 "FH_ERROR",
1541 "NMI_INTERRUPT_HOST",
1542 "NMI_INTERRUPT_ACTION_PT",
1543 "NMI_INTERRUPT_UNKNOWN",
1544 "UCODE_VERSION_MISMATCH",
1545 "HW_ERROR_ABS_LOCK",
1546 "HW_ERROR_CAL_LOCK_FAIL",
1547 "NMI_INTERRUPT_INST_ACTION_PT",
1548 "NMI_INTERRUPT_DATA_ACTION_PT",
1549 "NMI_TRM_HW_ER",
1550 "NMI_INTERRUPT_TRM",
1551 "NMI_INTERRUPT_BREAK_POINT",
1552 "DEBUG_0",
1553 "DEBUG_1",
1554 "DEBUG_2",
1555 "DEBUG_3",
1556 };
1557
1558 static struct { char *name; u8 num; } advanced_lookup[] = {
1559 { "NMI_INTERRUPT_WDG", 0x34 },
1560 { "SYSASSERT", 0x35 },
1561 { "UCODE_VERSION_MISMATCH", 0x37 },
1562 { "BAD_COMMAND", 0x38 },
1563 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1564 { "FATAL_ERROR", 0x3D },
1565 { "NMI_TRM_HW_ERR", 0x46 },
1566 { "NMI_INTERRUPT_TRM", 0x4C },
1567 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1568 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1569 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1570 { "NMI_INTERRUPT_HOST", 0x66 },
1571 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1572 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1573 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1574 { "ADVANCED_SYSASSERT", 0 },
1575 };
1576
1577 static const char *desc_lookup(u32 num)
1578 {
1579 int i;
1580 int max = ARRAY_SIZE(desc_lookup_text);
1581
1582 if (num < max)
1583 return desc_lookup_text[num];
1584
1585 max = ARRAY_SIZE(advanced_lookup) - 1;
1586 for (i = 0; i < max; i++) {
1587 if (advanced_lookup[i].num == num)
1588 break;
1589 }
1590 return advanced_lookup[i].name;
1591 }
1592
1593 #define ERROR_START_OFFSET (1 * sizeof(u32))
1594 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1595
1596 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1597 {
1598 struct iwl_trans *trans = priv->trans;
1599 u32 base;
1600 struct iwl_error_event_table table;
1601
1602 base = priv->device_pointers.error_event_table;
1603 if (priv->cur_ucode == IWL_UCODE_INIT) {
1604 if (!base)
1605 base = priv->fw->init_errlog_ptr;
1606 } else {
1607 if (!base)
1608 base = priv->fw->inst_errlog_ptr;
1609 }
1610
1611 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1612 IWL_ERR(priv,
1613 "Not valid error log pointer 0x%08X for %s uCode\n",
1614 base,
1615 (priv->cur_ucode == IWL_UCODE_INIT)
1616 ? "Init" : "RT");
1617 return;
1618 }
1619
1620 /*TODO: Update dbgfs with ISR error stats obtained below */
1621 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1622
1623 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1624 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1625 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1626 priv->status, table.valid);
1627 }
1628
1629 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1630 table.data1, table.data2, table.line,
1631 table.blink1, table.blink2, table.ilink1,
1632 table.ilink2, table.bcon_time, table.gp1,
1633 table.gp2, table.gp3, table.ucode_ver,
1634 table.hw_ver, table.brd_ver);
1635 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1636 desc_lookup(table.error_id));
1637 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1638 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1639 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1640 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1641 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1642 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1643 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1644 IWL_ERR(priv, "0x%08X | line\n", table.line);
1645 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1646 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1647 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1648 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1649 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1650 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1651 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1652 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1653 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1654 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1655 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1656 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1657 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1658 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1659 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1660 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1661 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1662 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1663 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1664 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1665 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1666 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1667 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1668 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1669 }
1670
1671 #define EVENT_START_OFFSET (4 * sizeof(u32))
1672
1673 /**
1674 * iwl_print_event_log - Dump error event log to syslog
1675 *
1676 */
1677 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1678 u32 num_events, u32 mode,
1679 int pos, char **buf, size_t bufsz)
1680 {
1681 u32 i;
1682 u32 base; /* SRAM byte address of event log header */
1683 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1684 u32 ptr; /* SRAM byte address of log data */
1685 u32 ev, time, data; /* event log data */
1686 unsigned long reg_flags;
1687
1688 struct iwl_trans *trans = priv->trans;
1689
1690 if (num_events == 0)
1691 return pos;
1692
1693 base = priv->device_pointers.log_event_table;
1694 if (priv->cur_ucode == IWL_UCODE_INIT) {
1695 if (!base)
1696 base = priv->fw->init_evtlog_ptr;
1697 } else {
1698 if (!base)
1699 base = priv->fw->inst_evtlog_ptr;
1700 }
1701
1702 if (mode == 0)
1703 event_size = 2 * sizeof(u32);
1704 else
1705 event_size = 3 * sizeof(u32);
1706
1707 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1708
1709 /* Make sure device is powered up for SRAM reads */
1710 if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1711 return pos;
1712
1713 /* Set starting address; reads will auto-increment */
1714 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1715
1716 /* "time" is actually "data" for mode 0 (no timestamp).
1717 * place event id # at far right for easier visual parsing. */
1718 for (i = 0; i < num_events; i++) {
1719 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1720 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1721 if (mode == 0) {
1722 /* data, ev */
1723 if (bufsz) {
1724 pos += scnprintf(*buf + pos, bufsz - pos,
1725 "EVT_LOG:0x%08x:%04u\n",
1726 time, ev);
1727 } else {
1728 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1729 time, ev);
1730 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1731 time, ev);
1732 }
1733 } else {
1734 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1735 if (bufsz) {
1736 pos += scnprintf(*buf + pos, bufsz - pos,
1737 "EVT_LOGT:%010u:0x%08x:%04u\n",
1738 time, data, ev);
1739 } else {
1740 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1741 time, data, ev);
1742 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1743 data, ev);
1744 }
1745 }
1746 }
1747
1748 /* Allow device to power down */
1749 iwl_trans_release_nic_access(trans, &reg_flags);
1750 return pos;
1751 }
1752
1753 /**
1754 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1755 */
1756 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1757 u32 num_wraps, u32 next_entry,
1758 u32 size, u32 mode,
1759 int pos, char **buf, size_t bufsz)
1760 {
1761 /*
1762 * display the newest DEFAULT_LOG_ENTRIES entries
1763 * i.e the entries just before the next ont that uCode would fill.
1764 */
1765 if (num_wraps) {
1766 if (next_entry < size) {
1767 pos = iwl_print_event_log(priv,
1768 capacity - (size - next_entry),
1769 size - next_entry, mode,
1770 pos, buf, bufsz);
1771 pos = iwl_print_event_log(priv, 0,
1772 next_entry, mode,
1773 pos, buf, bufsz);
1774 } else
1775 pos = iwl_print_event_log(priv, next_entry - size,
1776 size, mode, pos, buf, bufsz);
1777 } else {
1778 if (next_entry < size) {
1779 pos = iwl_print_event_log(priv, 0, next_entry,
1780 mode, pos, buf, bufsz);
1781 } else {
1782 pos = iwl_print_event_log(priv, next_entry - size,
1783 size, mode, pos, buf, bufsz);
1784 }
1785 }
1786 return pos;
1787 }
1788
1789 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1790
1791 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1792 char **buf)
1793 {
1794 u32 base; /* SRAM byte address of event log header */
1795 u32 capacity; /* event log capacity in # entries */
1796 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1797 u32 num_wraps; /* # times uCode wrapped to top of log */
1798 u32 next_entry; /* index of next entry to be written by uCode */
1799 u32 size; /* # entries that we'll print */
1800 u32 logsize;
1801 int pos = 0;
1802 size_t bufsz = 0;
1803 struct iwl_trans *trans = priv->trans;
1804
1805 base = priv->device_pointers.log_event_table;
1806 if (priv->cur_ucode == IWL_UCODE_INIT) {
1807 logsize = priv->fw->init_evtlog_size;
1808 if (!base)
1809 base = priv->fw->init_evtlog_ptr;
1810 } else {
1811 logsize = priv->fw->inst_evtlog_size;
1812 if (!base)
1813 base = priv->fw->inst_evtlog_ptr;
1814 }
1815
1816 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1817 IWL_ERR(priv,
1818 "Invalid event log pointer 0x%08X for %s uCode\n",
1819 base,
1820 (priv->cur_ucode == IWL_UCODE_INIT)
1821 ? "Init" : "RT");
1822 return -EINVAL;
1823 }
1824
1825 /* event log header */
1826 capacity = iwl_trans_read_mem32(trans, base);
1827 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1828 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1829 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1830
1831 if (capacity > logsize) {
1832 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1833 "entries\n", capacity, logsize);
1834 capacity = logsize;
1835 }
1836
1837 if (next_entry > logsize) {
1838 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1839 next_entry, logsize);
1840 next_entry = logsize;
1841 }
1842
1843 size = num_wraps ? capacity : next_entry;
1844
1845 /* bail out if nothing in log */
1846 if (size == 0) {
1847 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1848 return pos;
1849 }
1850
1851 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1852 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1853 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1854 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1855 size);
1856
1857 #ifdef CONFIG_IWLWIFI_DEBUG
1858 if (buf) {
1859 if (full_log)
1860 bufsz = capacity * 48;
1861 else
1862 bufsz = size * 48;
1863 *buf = kmalloc(bufsz, GFP_KERNEL);
1864 if (!*buf)
1865 return -ENOMEM;
1866 }
1867 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1868 /*
1869 * if uCode has wrapped back to top of log,
1870 * start at the oldest entry,
1871 * i.e the next one that uCode would fill.
1872 */
1873 if (num_wraps)
1874 pos = iwl_print_event_log(priv, next_entry,
1875 capacity - next_entry, mode,
1876 pos, buf, bufsz);
1877 /* (then/else) start at top of log */
1878 pos = iwl_print_event_log(priv, 0,
1879 next_entry, mode, pos, buf, bufsz);
1880 } else
1881 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1882 next_entry, size, mode,
1883 pos, buf, bufsz);
1884 #else
1885 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1886 next_entry, size, mode,
1887 pos, buf, bufsz);
1888 #endif
1889 return pos;
1890 }
1891
1892 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1893 {
1894 unsigned int reload_msec;
1895 unsigned long reload_jiffies;
1896
1897 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1898 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1899
1900 /* uCode is no longer loaded. */
1901 priv->ucode_loaded = false;
1902
1903 /* Set the FW error flag -- cleared on iwl_down */
1904 set_bit(STATUS_FW_ERROR, &priv->status);
1905
1906 iwl_abort_notification_waits(&priv->notif_wait);
1907
1908 /* Keep the restart process from trying to send host
1909 * commands by clearing the ready bit */
1910 clear_bit(STATUS_READY, &priv->status);
1911
1912 if (!ondemand) {
1913 /*
1914 * If firmware keep reloading, then it indicate something
1915 * serious wrong and firmware having problem to recover
1916 * from it. Instead of keep trying which will fill the syslog
1917 * and hang the system, let's just stop it
1918 */
1919 reload_jiffies = jiffies;
1920 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1921 (long) priv->reload_jiffies);
1922 priv->reload_jiffies = reload_jiffies;
1923 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1924 priv->reload_count++;
1925 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1926 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1927 return;
1928 }
1929 } else
1930 priv->reload_count = 0;
1931 }
1932
1933 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1934 if (iwlwifi_mod_params.restart_fw) {
1935 IWL_DEBUG_FW_ERRORS(priv,
1936 "Restarting adapter due to uCode error.\n");
1937 queue_work(priv->workqueue, &priv->restart);
1938 } else
1939 IWL_DEBUG_FW_ERRORS(priv,
1940 "Detected FW error, but not restarting\n");
1941 }
1942 }
1943
1944 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1945 {
1946 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1947
1948 IWL_ERR(priv, "Loaded firmware version: %s\n",
1949 priv->fw->fw_version);
1950
1951 iwl_dump_nic_error_log(priv);
1952 iwl_dump_nic_event_log(priv, false, NULL);
1953
1954 iwlagn_fw_error(priv, false);
1955 }
1956
1957 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1958 {
1959 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1960
1961 if (!iwl_check_for_ct_kill(priv)) {
1962 IWL_ERR(priv, "Restarting adapter queue is full\n");
1963 iwlagn_fw_error(priv, false);
1964 }
1965 }
1966
1967 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1968
1969 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1970 {
1971 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1972
1973 /* SKU Control */
1974 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1975 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1976 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1977 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1978 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1979 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1980 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1981
1982 /* write radio config values to register */
1983 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1984 u32 reg_val =
1985 priv->nvm_data->radio_cfg_type <<
1986 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1987 priv->nvm_data->radio_cfg_step <<
1988 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1989 priv->nvm_data->radio_cfg_dash <<
1990 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1991
1992 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1993 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1994 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1995 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1996 reg_val);
1997
1998 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
1999 priv->nvm_data->radio_cfg_type,
2000 priv->nvm_data->radio_cfg_step,
2001 priv->nvm_data->radio_cfg_dash);
2002 } else {
2003 WARN_ON(1);
2004 }
2005
2006 /* set CSR_HW_CONFIG_REG for uCode use */
2007 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2008 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2009 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2010
2011 /* W/A : NIC is stuck in a reset state after Early PCIe power off
2012 * (PCIe power is lost before PERST# is asserted),
2013 * causing ME FW to lose ownership and not being able to obtain it back.
2014 */
2015 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2016 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2017 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2018
2019 if (priv->lib->nic_config)
2020 priv->lib->nic_config(priv);
2021 }
2022
2023 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2024 {
2025 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2026
2027 clear_bit(STATUS_READY, &priv->status);
2028 IWL_ERR(priv, "RF is used by WiMAX\n");
2029 }
2030
2031 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2032 {
2033 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2034 int mq = priv->queue_to_mac80211[queue];
2035
2036 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2037 return;
2038
2039 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2040 IWL_DEBUG_TX_QUEUES(priv,
2041 "queue %d (mac80211 %d) already stopped\n",
2042 queue, mq);
2043 return;
2044 }
2045
2046 set_bit(mq, &priv->transport_queue_stop);
2047 ieee80211_stop_queue(priv->hw, mq);
2048 }
2049
2050 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2051 {
2052 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2053 int mq = priv->queue_to_mac80211[queue];
2054
2055 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2056 return;
2057
2058 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2059 IWL_DEBUG_TX_QUEUES(priv,
2060 "queue %d (mac80211 %d) already awake\n",
2061 queue, mq);
2062 return;
2063 }
2064
2065 clear_bit(mq, &priv->transport_queue_stop);
2066
2067 if (!priv->passive_no_rx)
2068 ieee80211_wake_queue(priv->hw, mq);
2069 }
2070
2071 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2072 {
2073 int mq;
2074
2075 if (!priv->passive_no_rx)
2076 return;
2077
2078 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2079 if (!test_bit(mq, &priv->transport_queue_stop)) {
2080 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2081 ieee80211_wake_queue(priv->hw, mq);
2082 } else {
2083 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2084 }
2085 }
2086
2087 priv->passive_no_rx = false;
2088 }
2089
2090 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2091 {
2092 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2093 struct ieee80211_tx_info *info;
2094
2095 info = IEEE80211_SKB_CB(skb);
2096 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2097 ieee80211_free_txskb(priv->hw, skb);
2098 }
2099
2100 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2101 {
2102 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2103
2104 if (state)
2105 set_bit(STATUS_RF_KILL_HW, &priv->status);
2106 else
2107 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2108
2109 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2110 }
2111
2112 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2113 .start = iwl_op_mode_dvm_start,
2114 .stop = iwl_op_mode_dvm_stop,
2115 .rx = iwl_rx_dispatch,
2116 .queue_full = iwl_stop_sw_queue,
2117 .queue_not_full = iwl_wake_sw_queue,
2118 .hw_rf_kill = iwl_set_hw_rfkill_state,
2119 .free_skb = iwl_free_skb,
2120 .nic_error = iwl_nic_error,
2121 .cmd_queue_full = iwl_cmd_queue_full,
2122 .nic_config = iwl_nic_config,
2123 .wimax_active = iwl_wimax_active,
2124 };
2125
2126 /*****************************************************************************
2127 *
2128 * driver and module entry point
2129 *
2130 *****************************************************************************/
2131 static int __init iwl_init(void)
2132 {
2133
2134 int ret;
2135
2136 ret = iwlagn_rate_control_register();
2137 if (ret) {
2138 pr_err("Unable to register rate control algorithm: %d\n", ret);
2139 return ret;
2140 }
2141
2142 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2143 if (ret) {
2144 pr_err("Unable to register op_mode: %d\n", ret);
2145 iwlagn_rate_control_unregister();
2146 }
2147
2148 return ret;
2149 }
2150 module_init(iwl_init);
2151
2152 static void __exit iwl_exit(void)
2153 {
2154 iwl_opmode_deregister("iwldvm");
2155 iwlagn_rate_control_unregister();
2156 }
2157 module_exit(iwl_exit);
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