1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/if_arp.h>
39
40 #include <net/mac80211.h>
41
42 #include <asm/div64.h>
43
44 #include "iwl-eeprom.h"
45 #include "iwl-dev.h"
46 #include "iwl-core.h"
47 #include "iwl-io.h"
48 #include "iwl-agn-calib.h"
49 #include "iwl-agn.h"
50 #include "iwl-shared.h"
51 #include "iwl-trans.h"
52 #include "iwl-op-mode.h"
53
54 /******************************************************************************
55 *
56 * module boiler plate
57 *
58 ******************************************************************************/
59
60 /*
61 * module name, copyright, version, etc.
62 */
63 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
64
65 #ifdef CONFIG_IWLWIFI_DEBUG
66 #define VD "d"
67 #else
68 #define VD
69 #endif
70
71 #define DRV_VERSION IWLWIFI_VERSION VD
72
73
74 MODULE_DESCRIPTION(DRV_DESCRIPTION);
75 MODULE_VERSION(DRV_VERSION);
76 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
77 MODULE_LICENSE("GPL");
78 MODULE_ALIAS("iwlagn");
79
iwl_update_chain_flags(struct iwl_priv * priv)80 void iwl_update_chain_flags(struct iwl_priv *priv)
81 {
82 struct iwl_rxon_context *ctx;
83
84 for_each_context(priv, ctx) {
85 iwlagn_set_rxon_chain(priv, ctx);
86 if (ctx->active.rx_chain != ctx->staging.rx_chain)
87 iwlagn_commit_rxon(priv, ctx);
88 }
89 }
90
91 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
iwl_set_beacon_tim(struct iwl_priv * priv,struct iwl_tx_beacon_cmd * tx_beacon_cmd,u8 * beacon,u32 frame_size)92 static void iwl_set_beacon_tim(struct iwl_priv *priv,
93 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
94 u8 *beacon, u32 frame_size)
95 {
96 u16 tim_idx;
97 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
98
99 /*
100 * The index is relative to frame start but we start looking at the
101 * variable-length part of the beacon.
102 */
103 tim_idx = mgmt->u.beacon.variable - beacon;
104
105 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
106 while ((tim_idx < (frame_size - 2)) &&
107 (beacon[tim_idx] != WLAN_EID_TIM))
108 tim_idx += beacon[tim_idx+1] + 2;
109
110 /* If TIM field was found, set variables */
111 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
112 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
113 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
114 } else
115 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
116 }
117
iwlagn_send_beacon_cmd(struct iwl_priv * priv)118 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
119 {
120 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
121 struct iwl_host_cmd cmd = {
122 .id = REPLY_TX_BEACON,
123 .flags = CMD_SYNC,
124 };
125 struct ieee80211_tx_info *info;
126 u32 frame_size;
127 u32 rate_flags;
128 u32 rate;
129
130 /*
131 * We have to set up the TX command, the TX Beacon command, and the
132 * beacon contents.
133 */
134
135 lockdep_assert_held(&priv->mutex);
136
137 if (!priv->beacon_ctx) {
138 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
139 return 0;
140 }
141
142 if (WARN_ON(!priv->beacon_skb))
143 return -EINVAL;
144
145 /* Allocate beacon command */
146 if (!priv->beacon_cmd)
147 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
148 tx_beacon_cmd = priv->beacon_cmd;
149 if (!tx_beacon_cmd)
150 return -ENOMEM;
151
152 frame_size = priv->beacon_skb->len;
153
154 /* Set up TX command fields */
155 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
156 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
157 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
158 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
159 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
160
161 /* Set up TX beacon command fields */
162 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
163 frame_size);
164
165 /* Set up packet rate and flags */
166 info = IEEE80211_SKB_CB(priv->beacon_skb);
167
168 /*
169 * Let's set up the rate at least somewhat correctly;
170 * it will currently not actually be used by the uCode,
171 * it uses the broadcast station's rate instead.
172 */
173 if (info->control.rates[0].idx < 0 ||
174 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
175 rate = 0;
176 else
177 rate = info->control.rates[0].idx;
178
179 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
180 hw_params(priv).valid_tx_ant);
181 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
182
183 /* In mac80211, rates for 5 GHz start at 0 */
184 if (info->band == IEEE80211_BAND_5GHZ)
185 rate += IWL_FIRST_OFDM_RATE;
186 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
187 rate_flags |= RATE_MCS_CCK_MSK;
188
189 tx_beacon_cmd->tx.rate_n_flags =
190 iwl_hw_set_rate_n_flags(rate, rate_flags);
191
192 /* Submit command */
193 cmd.len[0] = sizeof(*tx_beacon_cmd);
194 cmd.data[0] = tx_beacon_cmd;
195 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
196 cmd.len[1] = frame_size;
197 cmd.data[1] = priv->beacon_skb->data;
198 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
199
200 return iwl_dvm_send_cmd(priv, &cmd);
201 }
202
iwl_bg_beacon_update(struct work_struct * work)203 static void iwl_bg_beacon_update(struct work_struct *work)
204 {
205 struct iwl_priv *priv =
206 container_of(work, struct iwl_priv, beacon_update);
207 struct sk_buff *beacon;
208
209 mutex_lock(&priv->mutex);
210 if (!priv->beacon_ctx) {
211 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
212 goto out;
213 }
214
215 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
216 /*
217 * The ucode will send beacon notifications even in
218 * IBSS mode, but we don't want to process them. But
219 * we need to defer the type check to here due to
220 * requiring locking around the beacon_ctx access.
221 */
222 goto out;
223 }
224
225 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
226 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
227 if (!beacon) {
228 IWL_ERR(priv, "update beacon failed -- keeping old\n");
229 goto out;
230 }
231
232 /* new beacon skb is allocated every time; dispose previous.*/
233 dev_kfree_skb(priv->beacon_skb);
234
235 priv->beacon_skb = beacon;
236
237 iwlagn_send_beacon_cmd(priv);
238 out:
239 mutex_unlock(&priv->mutex);
240 }
241
iwl_bg_bt_runtime_config(struct work_struct * work)242 static void iwl_bg_bt_runtime_config(struct work_struct *work)
243 {
244 struct iwl_priv *priv =
245 container_of(work, struct iwl_priv, bt_runtime_config);
246
247 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
248 return;
249
250 /* dont send host command if rf-kill is on */
251 if (!iwl_is_ready_rf(priv))
252 return;
253 iwlagn_send_advance_bt_config(priv);
254 }
255
iwl_bg_bt_full_concurrency(struct work_struct * work)256 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
257 {
258 struct iwl_priv *priv =
259 container_of(work, struct iwl_priv, bt_full_concurrency);
260 struct iwl_rxon_context *ctx;
261
262 mutex_lock(&priv->mutex);
263
264 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
265 goto out;
266
267 /* dont send host command if rf-kill is on */
268 if (!iwl_is_ready_rf(priv))
269 goto out;
270
271 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
272 priv->bt_full_concurrent ?
273 "full concurrency" : "3-wire");
274
275 /*
276 * LQ & RXON updated cmds must be sent before BT Config cmd
277 * to avoid 3-wire collisions
278 */
279 for_each_context(priv, ctx) {
280 iwlagn_set_rxon_chain(priv, ctx);
281 iwlagn_commit_rxon(priv, ctx);
282 }
283
284 iwlagn_send_advance_bt_config(priv);
285 out:
286 mutex_unlock(&priv->mutex);
287 }
288
289 /**
290 * iwl_bg_statistics_periodic - Timer callback to queue statistics
291 *
292 * This callback is provided in order to send a statistics request.
293 *
294 * This timer function is continually reset to execute within
295 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
296 * was received. We need to ensure we receive the statistics in order
297 * to update the temperature used for calibrating the TXPOWER.
298 */
iwl_bg_statistics_periodic(unsigned long data)299 static void iwl_bg_statistics_periodic(unsigned long data)
300 {
301 struct iwl_priv *priv = (struct iwl_priv *)data;
302
303 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
304 return;
305
306 /* dont send host command if rf-kill is on */
307 if (!iwl_is_ready_rf(priv))
308 return;
309
310 iwl_send_statistics_request(priv, CMD_ASYNC, false);
311 }
312
313
iwl_print_cont_event_trace(struct iwl_priv * priv,u32 base,u32 start_idx,u32 num_events,u32 capacity,u32 mode)314 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
315 u32 start_idx, u32 num_events,
316 u32 capacity, u32 mode)
317 {
318 u32 i;
319 u32 ptr; /* SRAM byte address of log data */
320 u32 ev, time, data; /* event log data */
321 unsigned long reg_flags;
322
323 if (mode == 0)
324 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
325 else
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
327
328 /* Make sure device is powered up for SRAM reads */
329 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
330 if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
331 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
332 return;
333 }
334
335 /* Set starting address; reads will auto-increment */
336 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
337
338 /*
339 * Refuse to read more than would have fit into the log from
340 * the current start_idx. This used to happen due to the race
341 * described below, but now WARN because the code below should
342 * prevent it from happening here.
343 */
344 if (WARN_ON(num_events > capacity - start_idx))
345 num_events = capacity - start_idx;
346
347 /*
348 * "time" is actually "data" for mode 0 (no timestamp).
349 * place event id # at far right for easier visual parsing.
350 */
351 for (i = 0; i < num_events; i++) {
352 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
353 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
354 if (mode == 0) {
355 trace_iwlwifi_dev_ucode_cont_event(
356 trans(priv)->dev, 0, time, ev);
357 } else {
358 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
359 trace_iwlwifi_dev_ucode_cont_event(
360 trans(priv)->dev, time, data, ev);
361 }
362 }
363 /* Allow device to power down */
364 iwl_release_nic_access(trans(priv));
365 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
366 }
367
iwl_continuous_event_trace(struct iwl_priv * priv)368 static void iwl_continuous_event_trace(struct iwl_priv *priv)
369 {
370 u32 capacity; /* event log capacity in # entries */
371 struct {
372 u32 capacity;
373 u32 mode;
374 u32 wrap_counter;
375 u32 write_counter;
376 } __packed read;
377 u32 base; /* SRAM byte address of event log header */
378 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
379 u32 num_wraps; /* # times uCode wrapped to top of log */
380 u32 next_entry; /* index of next entry to be written by uCode */
381
382 base = priv->shrd->device_pointers.log_event_table;
383 if (iwlagn_hw_valid_rtc_data_addr(base)) {
384 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
385
386 capacity = read.capacity;
387 mode = read.mode;
388 num_wraps = read.wrap_counter;
389 next_entry = read.write_counter;
390 } else
391 return;
392
393 /*
394 * Unfortunately, the uCode doesn't use temporary variables.
395 * Therefore, it can happen that we read next_entry == capacity,
396 * which really means next_entry == 0.
397 */
398 if (unlikely(next_entry == capacity))
399 next_entry = 0;
400 /*
401 * Additionally, the uCode increases the write pointer before
402 * the wraps counter, so if the write pointer is smaller than
403 * the old write pointer (wrap occurred) but we read that no
404 * wrap occurred, we actually read between the next_entry and
405 * num_wraps update (this does happen in practice!!) -- take
406 * that into account by increasing num_wraps.
407 */
408 if (unlikely(next_entry < priv->event_log.next_entry &&
409 num_wraps == priv->event_log.num_wraps))
410 num_wraps++;
411
412 if (num_wraps == priv->event_log.num_wraps) {
413 iwl_print_cont_event_trace(
414 priv, base, priv->event_log.next_entry,
415 next_entry - priv->event_log.next_entry,
416 capacity, mode);
417
418 priv->event_log.non_wraps_count++;
419 } else {
420 if (num_wraps - priv->event_log.num_wraps > 1)
421 priv->event_log.wraps_more_count++;
422 else
423 priv->event_log.wraps_once_count++;
424
425 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
426 num_wraps - priv->event_log.num_wraps,
427 next_entry, priv->event_log.next_entry);
428
429 if (next_entry < priv->event_log.next_entry) {
430 iwl_print_cont_event_trace(
431 priv, base, priv->event_log.next_entry,
432 capacity - priv->event_log.next_entry,
433 capacity, mode);
434
435 iwl_print_cont_event_trace(
436 priv, base, 0, next_entry, capacity, mode);
437 } else {
438 iwl_print_cont_event_trace(
439 priv, base, next_entry,
440 capacity - next_entry,
441 capacity, mode);
442
443 iwl_print_cont_event_trace(
444 priv, base, 0, next_entry, capacity, mode);
445 }
446 }
447
448 priv->event_log.num_wraps = num_wraps;
449 priv->event_log.next_entry = next_entry;
450 }
451
452 /**
453 * iwl_bg_ucode_trace - Timer callback to log ucode event
454 *
455 * The timer is continually set to execute every
456 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
457 * this function is to perform continuous uCode event logging operation
458 * if enabled
459 */
iwl_bg_ucode_trace(unsigned long data)460 static void iwl_bg_ucode_trace(unsigned long data)
461 {
462 struct iwl_priv *priv = (struct iwl_priv *)data;
463
464 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
465 return;
466
467 if (priv->event_log.ucode_trace) {
468 iwl_continuous_event_trace(priv);
469 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
470 mod_timer(&priv->ucode_trace,
471 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
472 }
473 }
474
iwl_bg_tx_flush(struct work_struct * work)475 static void iwl_bg_tx_flush(struct work_struct *work)
476 {
477 struct iwl_priv *priv =
478 container_of(work, struct iwl_priv, tx_flush);
479
480 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
481 return;
482
483 /* do nothing if rf-kill is on */
484 if (!iwl_is_ready_rf(priv))
485 return;
486
487 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
488 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
489 }
490
iwl_init_context(struct iwl_priv * priv,u32 ucode_flags)491 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
492 {
493 int i;
494
495 /*
496 * The default context is always valid,
497 * the PAN context depends on uCode.
498 */
499 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
500 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
501 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
502
503 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
504 priv->contexts[i].ctxid = i;
505
506 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
507 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
508 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
509 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
510 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
511 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
512 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
513 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
514 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
515 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
516 BIT(NL80211_IFTYPE_ADHOC);
517 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
518 BIT(NL80211_IFTYPE_STATION);
519 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
520 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
521 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
522 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
523
524 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
525 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
526 REPLY_WIPAN_RXON_TIMING;
527 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
528 REPLY_WIPAN_RXON_ASSOC;
529 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
530 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
531 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
532 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
533 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
534 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
535 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
536
537 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
538 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
539 BIT(NL80211_IFTYPE_P2P_CLIENT) |
540 BIT(NL80211_IFTYPE_P2P_GO);
541
542 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
543 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
544 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
545
546 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
547 }
548
iwl_rf_kill_ct_config(struct iwl_priv * priv)549 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
550 {
551 struct iwl_ct_kill_config cmd;
552 struct iwl_ct_kill_throttling_config adv_cmd;
553 int ret = 0;
554
555 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
556 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
557
558 priv->thermal_throttle.ct_kill_toggle = false;
559
560 if (cfg(priv)->base_params->support_ct_kill_exit) {
561 adv_cmd.critical_temperature_enter =
562 cpu_to_le32(hw_params(priv).ct_kill_threshold);
563 adv_cmd.critical_temperature_exit =
564 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
565
566 ret = iwl_dvm_send_cmd_pdu(priv,
567 REPLY_CT_KILL_CONFIG_CMD,
568 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
569 if (ret)
570 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
571 else
572 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
573 "succeeded, critical temperature enter is %d,"
574 "exit is %d\n",
575 hw_params(priv).ct_kill_threshold,
576 hw_params(priv).ct_kill_exit_threshold);
577 } else {
578 cmd.critical_temperature_R =
579 cpu_to_le32(hw_params(priv).ct_kill_threshold);
580
581 ret = iwl_dvm_send_cmd_pdu(priv,
582 REPLY_CT_KILL_CONFIG_CMD,
583 CMD_SYNC, sizeof(cmd), &cmd);
584 if (ret)
585 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
586 else
587 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
588 "succeeded, "
589 "critical temperature is %d\n",
590 hw_params(priv).ct_kill_threshold);
591 }
592 }
593
iwlagn_send_calib_cfg_rt(struct iwl_priv * priv,u32 cfg)594 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
595 {
596 struct iwl_calib_cfg_cmd calib_cfg_cmd;
597 struct iwl_host_cmd cmd = {
598 .id = CALIBRATION_CFG_CMD,
599 .len = { sizeof(struct iwl_calib_cfg_cmd), },
600 .data = { &calib_cfg_cmd, },
601 };
602
603 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
604 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
605 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
606
607 return iwl_dvm_send_cmd(priv, &cmd);
608 }
609
610
iwlagn_send_tx_ant_config(struct iwl_priv * priv,u8 valid_tx_ant)611 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
612 {
613 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
614 .valid = cpu_to_le32(valid_tx_ant),
615 };
616
617 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
618 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
619 return iwl_dvm_send_cmd_pdu(priv,
620 TX_ANT_CONFIGURATION_CMD,
621 CMD_SYNC,
622 sizeof(struct iwl_tx_ant_config_cmd),
623 &tx_ant_cmd);
624 } else {
625 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
626 return -EOPNOTSUPP;
627 }
628 }
629
630 /**
631 * iwl_alive_start - called after REPLY_ALIVE notification received
632 * from protocol/runtime uCode (initialization uCode's
633 * Alive gets handled by iwl_init_alive_start()).
634 */
iwl_alive_start(struct iwl_priv * priv)635 int iwl_alive_start(struct iwl_priv *priv)
636 {
637 int ret = 0;
638 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
639
640 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
641
642 /* After the ALIVE response, we can send host commands to the uCode */
643 set_bit(STATUS_ALIVE, &priv->status);
644
645 /* Enable watchdog to monitor the driver tx queues */
646 iwl_setup_watchdog(priv);
647
648 if (iwl_is_rfkill(priv))
649 return -ERFKILL;
650
651 if (priv->event_log.ucode_trace) {
652 /* start collecting data now */
653 mod_timer(&priv->ucode_trace, jiffies);
654 }
655
656 /* download priority table before any calibration request */
657 if (cfg(priv)->bt_params &&
658 cfg(priv)->bt_params->advanced_bt_coexist) {
659 /* Configure Bluetooth device coexistence support */
660 if (cfg(priv)->bt_params->bt_sco_disable)
661 priv->bt_enable_pspoll = false;
662 else
663 priv->bt_enable_pspoll = true;
664
665 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
666 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
667 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
668 iwlagn_send_advance_bt_config(priv);
669 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
670 priv->cur_rssi_ctx = NULL;
671
672 iwl_send_prio_tbl(priv);
673
674 /* FIXME: w/a to force change uCode BT state machine */
675 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
676 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
677 if (ret)
678 return ret;
679 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
680 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
681 if (ret)
682 return ret;
683 } else if (priv->shrd->cfg->bt_params) {
684 /*
685 * default is 2-wire BT coexexistence support
686 */
687 iwl_send_bt_config(priv);
688 }
689
690 /*
691 * Perform runtime calibrations, including DC calibration.
692 */
693 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
694
695 ieee80211_wake_queues(priv->hw);
696
697 priv->active_rate = IWL_RATES_MASK;
698
699 /* Configure Tx antenna selection based on H/W config */
700 iwlagn_send_tx_ant_config(priv, hw_params(priv).valid_tx_ant);
701
702 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
703 struct iwl_rxon_cmd *active_rxon =
704 (struct iwl_rxon_cmd *)&ctx->active;
705 /* apply any changes in staging */
706 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
707 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
708 } else {
709 struct iwl_rxon_context *tmp;
710 /* Initialize our rx_config data */
711 for_each_context(priv, tmp)
712 iwl_connection_init_rx_config(priv, tmp);
713
714 iwlagn_set_rxon_chain(priv, ctx);
715 }
716
717 if (!priv->wowlan) {
718 /* WoWLAN ucode will not reply in the same way, skip it */
719 iwl_reset_run_time_calib(priv);
720 }
721
722 set_bit(STATUS_READY, &priv->status);
723
724 /* Configure the adapter for unassociated operation */
725 ret = iwlagn_commit_rxon(priv, ctx);
726 if (ret)
727 return ret;
728
729 /* At this point, the NIC is initialized and operational */
730 iwl_rf_kill_ct_config(priv);
731
732 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
733
734 return iwl_power_update_mode(priv, true);
735 }
736
737 /**
738 * iwl_clear_driver_stations - clear knowledge of all stations from driver
739 * @priv: iwl priv struct
740 *
741 * This is called during iwl_down() to make sure that in the case
742 * we're coming there from a hardware restart mac80211 will be
743 * able to reconfigure stations -- if we're getting there in the
744 * normal down flow then the stations will already be cleared.
745 */
iwl_clear_driver_stations(struct iwl_priv * priv)746 static void iwl_clear_driver_stations(struct iwl_priv *priv)
747 {
748 struct iwl_rxon_context *ctx;
749
750 spin_lock_bh(&priv->sta_lock);
751 memset(priv->stations, 0, sizeof(priv->stations));
752 priv->num_stations = 0;
753
754 priv->ucode_key_table = 0;
755
756 for_each_context(priv, ctx) {
757 /*
758 * Remove all key information that is not stored as part
759 * of station information since mac80211 may not have had
760 * a chance to remove all the keys. When device is
761 * reconfigured by mac80211 after an error all keys will
762 * be reconfigured.
763 */
764 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
765 ctx->key_mapping_keys = 0;
766 }
767
768 spin_unlock_bh(&priv->sta_lock);
769 }
770
iwl_down(struct iwl_priv * priv)771 void iwl_down(struct iwl_priv *priv)
772 {
773 int exit_pending;
774
775 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
776
777 lockdep_assert_held(&priv->mutex);
778
779 iwl_scan_cancel_timeout(priv, 200);
780
781 /*
782 * If active, scanning won't cancel it, so say it expired.
783 * No race since we hold the mutex here and a new one
784 * can't come in at this time.
785 */
786 ieee80211_remain_on_channel_expired(priv->hw);
787
788 exit_pending =
789 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
790
791 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
792 * to prevent rearm timer */
793 del_timer_sync(&priv->watchdog);
794
795 iwl_clear_ucode_stations(priv, NULL);
796 iwl_dealloc_bcast_stations(priv);
797 iwl_clear_driver_stations(priv);
798
799 /* reset BT coex data */
800 priv->bt_status = 0;
801 priv->cur_rssi_ctx = NULL;
802 priv->bt_is_sco = 0;
803 if (cfg(priv)->bt_params)
804 priv->bt_traffic_load =
805 cfg(priv)->bt_params->bt_init_traffic_load;
806 else
807 priv->bt_traffic_load = 0;
808 priv->bt_full_concurrent = false;
809 priv->bt_ci_compliance = 0;
810
811 /* Wipe out the EXIT_PENDING status bit if we are not actually
812 * exiting the module */
813 if (!exit_pending)
814 clear_bit(STATUS_EXIT_PENDING, &priv->status);
815
816 if (priv->mac80211_registered)
817 ieee80211_stop_queues(priv->hw);
818
819 priv->ucode_loaded = false;
820 iwl_trans_stop_device(trans(priv));
821
822 /* Clear out all status bits but a few that are stable across reset */
823 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
824 STATUS_RF_KILL_HW |
825 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
826 STATUS_GEO_CONFIGURED |
827 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
828 STATUS_EXIT_PENDING;
829 priv->shrd->status &=
830 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
831 STATUS_FW_ERROR;
832
833 dev_kfree_skb(priv->beacon_skb);
834 priv->beacon_skb = NULL;
835 }
836
837 /*****************************************************************************
838 *
839 * Workqueue callbacks
840 *
841 *****************************************************************************/
842
iwl_bg_run_time_calib_work(struct work_struct * work)843 static void iwl_bg_run_time_calib_work(struct work_struct *work)
844 {
845 struct iwl_priv *priv = container_of(work, struct iwl_priv,
846 run_time_calib_work);
847
848 mutex_lock(&priv->mutex);
849
850 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
851 test_bit(STATUS_SCANNING, &priv->status)) {
852 mutex_unlock(&priv->mutex);
853 return;
854 }
855
856 if (priv->start_calib) {
857 iwl_chain_noise_calibration(priv);
858 iwl_sensitivity_calibration(priv);
859 }
860
861 mutex_unlock(&priv->mutex);
862 }
863
iwlagn_prepare_restart(struct iwl_priv * priv)864 void iwlagn_prepare_restart(struct iwl_priv *priv)
865 {
866 bool bt_full_concurrent;
867 u8 bt_ci_compliance;
868 u8 bt_load;
869 u8 bt_status;
870 bool bt_is_sco;
871
872 lockdep_assert_held(&priv->mutex);
873
874 priv->is_open = 0;
875
876 /*
877 * __iwl_down() will clear the BT status variables,
878 * which is correct, but when we restart we really
879 * want to keep them so restore them afterwards.
880 *
881 * The restart process will later pick them up and
882 * re-configure the hw when we reconfigure the BT
883 * command.
884 */
885 bt_full_concurrent = priv->bt_full_concurrent;
886 bt_ci_compliance = priv->bt_ci_compliance;
887 bt_load = priv->bt_traffic_load;
888 bt_status = priv->bt_status;
889 bt_is_sco = priv->bt_is_sco;
890
891 iwl_down(priv);
892
893 priv->bt_full_concurrent = bt_full_concurrent;
894 priv->bt_ci_compliance = bt_ci_compliance;
895 priv->bt_traffic_load = bt_load;
896 priv->bt_status = bt_status;
897 priv->bt_is_sco = bt_is_sco;
898 }
899
iwl_bg_restart(struct work_struct * data)900 static void iwl_bg_restart(struct work_struct *data)
901 {
902 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
903
904 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
905 return;
906
907 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
908 mutex_lock(&priv->mutex);
909 iwlagn_prepare_restart(priv);
910 mutex_unlock(&priv->mutex);
911 iwl_cancel_deferred_work(priv);
912 ieee80211_restart_hw(priv->hw);
913 } else {
914 WARN_ON(1);
915 }
916 }
917
918
919
920
iwlagn_disable_roc(struct iwl_priv * priv)921 void iwlagn_disable_roc(struct iwl_priv *priv)
922 {
923 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
924
925 lockdep_assert_held(&priv->mutex);
926
927 if (!priv->hw_roc_setup)
928 return;
929
930 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
931 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
932
933 priv->hw_roc_channel = NULL;
934
935 memset(ctx->staging.node_addr, 0, ETH_ALEN);
936
937 iwlagn_commit_rxon(priv, ctx);
938
939 ctx->is_active = false;
940 priv->hw_roc_setup = false;
941 }
942
iwlagn_disable_roc_work(struct work_struct * work)943 static void iwlagn_disable_roc_work(struct work_struct *work)
944 {
945 struct iwl_priv *priv = container_of(work, struct iwl_priv,
946 hw_roc_disable_work.work);
947
948 mutex_lock(&priv->mutex);
949 iwlagn_disable_roc(priv);
950 mutex_unlock(&priv->mutex);
951 }
952
953 /*****************************************************************************
954 *
955 * driver setup and teardown
956 *
957 *****************************************************************************/
958
iwl_setup_deferred_work(struct iwl_priv * priv)959 static void iwl_setup_deferred_work(struct iwl_priv *priv)
960 {
961 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
962
963 INIT_WORK(&priv->restart, iwl_bg_restart);
964 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
965 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
966 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
967 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
968 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
969 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
970 iwlagn_disable_roc_work);
971
972 iwl_setup_scan_deferred_work(priv);
973
974 if (cfg(priv)->bt_params)
975 iwlagn_bt_setup_deferred_work(priv);
976
977 init_timer(&priv->statistics_periodic);
978 priv->statistics_periodic.data = (unsigned long)priv;
979 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
980
981 init_timer(&priv->ucode_trace);
982 priv->ucode_trace.data = (unsigned long)priv;
983 priv->ucode_trace.function = iwl_bg_ucode_trace;
984
985 init_timer(&priv->watchdog);
986 priv->watchdog.data = (unsigned long)priv;
987 priv->watchdog.function = iwl_bg_watchdog;
988 }
989
iwl_cancel_deferred_work(struct iwl_priv * priv)990 void iwl_cancel_deferred_work(struct iwl_priv *priv)
991 {
992 if (cfg(priv)->bt_params)
993 iwlagn_bt_cancel_deferred_work(priv);
994
995 cancel_work_sync(&priv->run_time_calib_work);
996 cancel_work_sync(&priv->beacon_update);
997
998 iwl_cancel_scan_deferred_work(priv);
999
1000 cancel_work_sync(&priv->bt_full_concurrency);
1001 cancel_work_sync(&priv->bt_runtime_config);
1002 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1003
1004 del_timer_sync(&priv->statistics_periodic);
1005 del_timer_sync(&priv->ucode_trace);
1006 }
1007
iwl_init_hw_rates(struct ieee80211_rate * rates)1008 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1009 {
1010 int i;
1011
1012 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1013 rates[i].bitrate = iwl_rates[i].ieee * 5;
1014 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1015 rates[i].hw_value_short = i;
1016 rates[i].flags = 0;
1017 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1018 /*
1019 * If CCK != 1M then set short preamble rate flag.
1020 */
1021 rates[i].flags |=
1022 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1023 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1024 }
1025 }
1026 }
1027
iwl_init_drv(struct iwl_priv * priv)1028 static int iwl_init_drv(struct iwl_priv *priv)
1029 {
1030 int ret;
1031
1032 spin_lock_init(&priv->sta_lock);
1033
1034 mutex_init(&priv->mutex);
1035
1036 INIT_LIST_HEAD(&priv->calib_results);
1037
1038 priv->ieee_channels = NULL;
1039 priv->ieee_rates = NULL;
1040 priv->band = IEEE80211_BAND_2GHZ;
1041
1042 priv->plcp_delta_threshold =
1043 cfg(priv)->base_params->plcp_delta_threshold;
1044
1045 priv->iw_mode = NL80211_IFTYPE_STATION;
1046 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1047 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1048 priv->agg_tids_count = 0;
1049
1050 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1051
1052 /* initialize force reset */
1053 priv->force_reset[IWL_RF_RESET].reset_duration =
1054 IWL_DELAY_NEXT_FORCE_RF_RESET;
1055 priv->force_reset[IWL_FW_RESET].reset_duration =
1056 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1057
1058 priv->rx_statistics_jiffies = jiffies;
1059
1060 /* Choose which receivers/antennas to use */
1061 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1062
1063 iwl_init_scan_params(priv);
1064
1065 /* init bt coex */
1066 if (cfg(priv)->bt_params &&
1067 cfg(priv)->bt_params->advanced_bt_coexist) {
1068 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1069 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1070 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1071 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1072 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1073 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1074 }
1075
1076 ret = iwl_init_channel_map(priv);
1077 if (ret) {
1078 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1079 goto err;
1080 }
1081
1082 ret = iwl_init_geos(priv);
1083 if (ret) {
1084 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1085 goto err_free_channel_map;
1086 }
1087 iwl_init_hw_rates(priv->ieee_rates);
1088
1089 return 0;
1090
1091 err_free_channel_map:
1092 iwl_free_channel_map(priv);
1093 err:
1094 return ret;
1095 }
1096
iwl_uninit_drv(struct iwl_priv * priv)1097 static void iwl_uninit_drv(struct iwl_priv *priv)
1098 {
1099 iwl_free_geos(priv);
1100 iwl_free_channel_map(priv);
1101 kfree(priv->scan_cmd);
1102 kfree(priv->beacon_cmd);
1103 kfree(rcu_dereference_raw(priv->noa_data));
1104 iwl_calib_free_results(priv);
1105 #ifdef CONFIG_IWLWIFI_DEBUGFS
1106 kfree(priv->wowlan_sram);
1107 #endif
1108 }
1109
1110 /* Size of one Rx buffer in host DRAM */
1111 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1112 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1113
iwl_set_hw_params(struct iwl_priv * priv)1114 static void iwl_set_hw_params(struct iwl_priv *priv)
1115 {
1116 if (cfg(priv)->ht_params)
1117 hw_params(priv).use_rts_for_aggregation =
1118 cfg(priv)->ht_params->use_rts_for_aggregation;
1119
1120 if (iwlagn_mod_params.amsdu_size_8K)
1121 hw_params(priv).rx_page_order =
1122 get_order(IWL_RX_BUF_SIZE_8K);
1123 else
1124 hw_params(priv).rx_page_order =
1125 get_order(IWL_RX_BUF_SIZE_4K);
1126
1127 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1128 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1129
1130 hw_params(priv).num_ampdu_queues =
1131 cfg(priv)->base_params->num_of_ampdu_queues;
1132 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1133
1134 /* Device-specific setup */
1135 cfg(priv)->lib->set_hw_params(priv);
1136 }
1137
1138
1139
iwl_debug_config(struct iwl_priv * priv)1140 static void iwl_debug_config(struct iwl_priv *priv)
1141 {
1142 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1143 #ifdef CONFIG_IWLWIFI_DEBUG
1144 "enabled\n");
1145 #else
1146 "disabled\n");
1147 #endif
1148 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1149 #ifdef CONFIG_IWLWIFI_DEBUGFS
1150 "enabled\n");
1151 #else
1152 "disabled\n");
1153 #endif
1154 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1155 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1156 "enabled\n");
1157 #else
1158 "disabled\n");
1159 #endif
1160
1161 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1162 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1163 "enabled\n");
1164 #else
1165 "disabled\n");
1166 #endif
1167 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1168 #ifdef CONFIG_IWLWIFI_P2P
1169 "enabled\n");
1170 #else
1171 "disabled\n");
1172 #endif
1173 }
1174
iwl_op_mode_dvm_start(struct iwl_trans * trans,const struct iwl_fw * fw)1175 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1176 const struct iwl_fw *fw)
1177 {
1178 int err = 0;
1179 struct iwl_priv *priv;
1180 struct ieee80211_hw *hw;
1181 struct iwl_op_mode *op_mode;
1182 u16 num_mac;
1183 u32 ucode_flags;
1184 struct iwl_trans_config trans_cfg;
1185 static const u8 no_reclaim_cmds[] = {
1186 REPLY_RX_PHY_CMD,
1187 REPLY_RX,
1188 REPLY_RX_MPDU_CMD,
1189 REPLY_COMPRESSED_BA,
1190 STATISTICS_NOTIFICATION,
1191 REPLY_TX,
1192 };
1193
1194 /************************
1195 * 1. Allocating HW data
1196 ************************/
1197 hw = iwl_alloc_all();
1198 if (!hw) {
1199 pr_err("%s: Cannot allocate network device\n",
1200 cfg(trans)->name);
1201 err = -ENOMEM;
1202 goto out;
1203 }
1204
1205 op_mode = hw->priv;
1206 op_mode->ops = &iwl_dvm_ops;
1207 priv = IWL_OP_MODE_GET_DVM(op_mode);
1208 priv->shrd = trans->shrd;
1209 priv->fw = fw;
1210 /* TODO: remove fw from shared data later */
1211 priv->shrd->fw = fw;
1212
1213 /*
1214 * Populate the state variables that the transport layer needs
1215 * to know about.
1216 */
1217 trans_cfg.op_mode = op_mode;
1218 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1219 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1220
1221 ucode_flags = fw->ucode_capa.flags;
1222
1223 #ifndef CONFIG_IWLWIFI_P2P
1224 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1225 #endif
1226
1227 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1228 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1229 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1230 } else {
1231 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1232 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1233 }
1234
1235 /* Configure transport layer */
1236 iwl_trans_configure(trans(priv), &trans_cfg);
1237
1238 /* At this point both hw and priv are allocated. */
1239
1240 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1241
1242 /* show what debugging capabilities we have */
1243 iwl_debug_config(priv);
1244
1245 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1246
1247 /* is antenna coupling more than 35dB ? */
1248 priv->bt_ant_couple_ok =
1249 (iwlagn_mod_params.ant_coupling >
1250 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1251 true : false;
1252
1253 /* enable/disable bt channel inhibition */
1254 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1255 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1256 (priv->bt_ch_announce) ? "On" : "Off");
1257
1258 if (iwl_alloc_traffic_mem(priv))
1259 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1260
1261 /* these spin locks will be used in apm_ops.init and EEPROM access
1262 * we should init now
1263 */
1264 spin_lock_init(&trans(priv)->reg_lock);
1265 spin_lock_init(&priv->statistics.lock);
1266
1267 /***********************
1268 * 2. Read REV register
1269 ***********************/
1270 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1271 cfg(priv)->name, trans(priv)->hw_rev);
1272
1273 err = iwl_trans_start_hw(trans(priv));
1274 if (err)
1275 goto out_free_traffic_mem;
1276
1277 /*****************
1278 * 3. Read EEPROM
1279 *****************/
1280 err = iwl_eeprom_init(trans(priv), trans(priv)->hw_rev);
1281 /* Reset chip to save power until we load uCode during "up". */
1282 iwl_trans_stop_hw(trans(priv));
1283 if (err) {
1284 IWL_ERR(priv, "Unable to init EEPROM\n");
1285 goto out_free_traffic_mem;
1286 }
1287 err = iwl_eeprom_check_version(priv);
1288 if (err)
1289 goto out_free_eeprom;
1290
1291 err = iwl_eeprom_init_hw_params(priv);
1292 if (err)
1293 goto out_free_eeprom;
1294
1295 /* extract MAC Address */
1296 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1297 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1298 priv->hw->wiphy->addresses = priv->addresses;
1299 priv->hw->wiphy->n_addresses = 1;
1300 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1301 if (num_mac > 1) {
1302 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1303 ETH_ALEN);
1304 priv->addresses[1].addr[5]++;
1305 priv->hw->wiphy->n_addresses++;
1306 }
1307
1308 /************************
1309 * 4. Setup HW constants
1310 ************************/
1311 iwl_set_hw_params(priv);
1312
1313 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1314 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1315 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1316 /*
1317 * if not PAN, then don't support P2P -- might be a uCode
1318 * packaging bug or due to the eeprom check above
1319 */
1320 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1321 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1322 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1323
1324 /* Configure transport layer again*/
1325 iwl_trans_configure(trans(priv), &trans_cfg);
1326 }
1327
1328 /*******************
1329 * 5. Setup priv
1330 *******************/
1331
1332 err = iwl_init_drv(priv);
1333 if (err)
1334 goto out_free_eeprom;
1335 /* At this point both hw and priv are initialized. */
1336
1337 /********************
1338 * 6. Setup services
1339 ********************/
1340 iwl_setup_deferred_work(priv);
1341 iwl_setup_rx_handlers(priv);
1342 iwl_testmode_init(priv);
1343
1344 iwl_power_initialize(priv);
1345 iwl_tt_initialize(priv);
1346
1347 snprintf(priv->hw->wiphy->fw_version,
1348 sizeof(priv->hw->wiphy->fw_version),
1349 "%s", fw->fw_version);
1350
1351 priv->new_scan_threshold_behaviour =
1352 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1353
1354 priv->phy_calib_chain_noise_reset_cmd =
1355 fw->ucode_capa.standard_phy_calibration_size;
1356 priv->phy_calib_chain_noise_gain_cmd =
1357 fw->ucode_capa.standard_phy_calibration_size + 1;
1358
1359 /* initialize all valid contexts */
1360 iwl_init_context(priv, ucode_flags);
1361
1362 /**************************************************
1363 * This is still part of probe() in a sense...
1364 *
1365 * 7. Setup and register with mac80211 and debugfs
1366 **************************************************/
1367 err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
1368 if (err)
1369 goto out_destroy_workqueue;
1370
1371 err = iwl_dbgfs_register(priv, DRV_NAME);
1372 if (err)
1373 IWL_ERR(priv,
1374 "failed to create debugfs files. Ignoring error: %d\n",
1375 err);
1376
1377 return op_mode;
1378
1379 out_destroy_workqueue:
1380 destroy_workqueue(priv->workqueue);
1381 priv->workqueue = NULL;
1382 iwl_uninit_drv(priv);
1383 out_free_eeprom:
1384 iwl_eeprom_free(priv->shrd);
1385 out_free_traffic_mem:
1386 iwl_free_traffic_mem(priv);
1387 ieee80211_free_hw(priv->hw);
1388 out:
1389 op_mode = NULL;
1390 return op_mode;
1391 }
1392
iwl_op_mode_dvm_stop(struct iwl_op_mode * op_mode)1393 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1394 {
1395 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1396
1397 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1398
1399 iwl_dbgfs_unregister(priv);
1400
1401 iwl_testmode_cleanup(priv);
1402 iwlagn_mac_unregister(priv);
1403
1404 iwl_tt_exit(priv);
1405
1406 /*This will stop the queues, move the device to low power state */
1407 priv->ucode_loaded = false;
1408 iwl_trans_stop_device(trans(priv));
1409
1410 iwl_eeprom_free(priv->shrd);
1411
1412 /*netif_stop_queue(dev); */
1413 flush_workqueue(priv->workqueue);
1414
1415 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1416 * priv->workqueue... so we can't take down the workqueue
1417 * until now... */
1418 destroy_workqueue(priv->workqueue);
1419 priv->workqueue = NULL;
1420 iwl_free_traffic_mem(priv);
1421
1422 iwl_uninit_drv(priv);
1423
1424 dev_kfree_skb(priv->beacon_skb);
1425
1426 ieee80211_free_hw(priv->hw);
1427 }
1428
iwl_cmd_queue_full(struct iwl_op_mode * op_mode)1429 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1430 {
1431 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1432
1433 if (!iwl_check_for_ct_kill(priv)) {
1434 IWL_ERR(priv, "Restarting adapter queue is full\n");
1435 iwl_nic_error(op_mode);
1436 }
1437 }
1438
iwl_nic_config(struct iwl_op_mode * op_mode)1439 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1440 {
1441 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1442
1443 cfg(priv)->lib->nic_config(priv);
1444 }
1445
iwl_stop_sw_queue(struct iwl_op_mode * op_mode,u8 ac)1446 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, u8 ac)
1447 {
1448 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1449
1450 set_bit(ac, &priv->transport_queue_stop);
1451 ieee80211_stop_queue(priv->hw, ac);
1452 }
1453
iwl_wake_sw_queue(struct iwl_op_mode * op_mode,u8 ac)1454 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, u8 ac)
1455 {
1456 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1457
1458 clear_bit(ac, &priv->transport_queue_stop);
1459
1460 if (!priv->passive_no_rx)
1461 ieee80211_wake_queue(priv->hw, ac);
1462 }
1463
iwlagn_lift_passive_no_rx(struct iwl_priv * priv)1464 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
1465 {
1466 int ac;
1467
1468 if (!priv->passive_no_rx)
1469 return;
1470
1471 for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
1472 if (!test_bit(ac, &priv->transport_queue_stop)) {
1473 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
1474 ieee80211_wake_queue(priv->hw, ac);
1475 } else {
1476 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
1477 }
1478 }
1479
1480 priv->passive_no_rx = false;
1481 }
1482
1483 const struct iwl_op_mode_ops iwl_dvm_ops = {
1484 .start = iwl_op_mode_dvm_start,
1485 .stop = iwl_op_mode_dvm_stop,
1486 .rx = iwl_rx_dispatch,
1487 .queue_full = iwl_stop_sw_queue,
1488 .queue_not_full = iwl_wake_sw_queue,
1489 .hw_rf_kill = iwl_set_hw_rfkill_state,
1490 .free_skb = iwl_free_skb,
1491 .nic_error = iwl_nic_error,
1492 .cmd_queue_full = iwl_cmd_queue_full,
1493 .nic_config = iwl_nic_config,
1494 };
1495
1496 /*****************************************************************************
1497 *
1498 * driver and module entry point
1499 *
1500 *****************************************************************************/
1501
1502 struct kmem_cache *iwl_tx_cmd_pool;
1503
iwl_init(void)1504 static int __init iwl_init(void)
1505 {
1506
1507 int ret;
1508 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1509 pr_info(DRV_COPYRIGHT "\n");
1510
1511 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
1512 sizeof(struct iwl_device_cmd),
1513 sizeof(void *), 0, NULL);
1514 if (!iwl_tx_cmd_pool)
1515 return -ENOMEM;
1516
1517 ret = iwlagn_rate_control_register();
1518 if (ret) {
1519 pr_err("Unable to register rate control algorithm: %d\n", ret);
1520 goto error_rc_register;
1521 }
1522
1523 ret = iwl_pci_register_driver();
1524 if (ret)
1525 goto error_pci_register;
1526 return ret;
1527
1528 error_pci_register:
1529 iwlagn_rate_control_unregister();
1530 error_rc_register:
1531 kmem_cache_destroy(iwl_tx_cmd_pool);
1532 return ret;
1533 }
1534
iwl_exit(void)1535 static void __exit iwl_exit(void)
1536 {
1537 iwl_pci_unregister_driver();
1538 iwlagn_rate_control_unregister();
1539 kmem_cache_destroy(iwl_tx_cmd_pool);
1540 }
1541
1542 module_exit(iwl_exit);
1543 module_init(iwl_init);
1544
1545 #ifdef CONFIG_IWLWIFI_DEBUG
1546 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1547 S_IRUGO | S_IWUSR);
1548 MODULE_PARM_DESC(debug, "debug output mask");
1549 #endif
1550
1551 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1552 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1553 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1554 MODULE_PARM_DESC(11n_disable,
1555 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1556 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1557 int, S_IRUGO);
1558 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1559 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
1560 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1561
1562 module_param_named(ucode_alternative,
1563 iwlagn_mod_params.wanted_ucode_alternative,
1564 int, S_IRUGO);
1565 MODULE_PARM_DESC(ucode_alternative,
1566 "specify ucode alternative to use from ucode file");
1567
1568 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
1569 int, S_IRUGO);
1570 MODULE_PARM_DESC(antenna_coupling,
1571 "specify antenna coupling in dB (defualt: 0 dB)");
1572
1573 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
1574 bool, S_IRUGO);
1575 MODULE_PARM_DESC(bt_ch_inhibition,
1576 "Enable BT channel inhibition (default: enable)");
1577
1578 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
1579 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1580
1581 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
1582 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1583
1584 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1585 MODULE_PARM_DESC(wd_disable,
1586 "Disable stuck queue watchdog timer 0=system default, "
1587 "1=disable, 2=enable (default: 0)");
1588
1589 /*
1590 * set bt_coex_active to true, uCode will do kill/defer
1591 * every time the priority line is asserted (BT is sending signals on the
1592 * priority line in the PCIx).
1593 * set bt_coex_active to false, uCode will ignore the BT activity and
1594 * perform the normal operation
1595 *
1596 * User might experience transmit issue on some platform due to WiFi/BT
1597 * co-exist problem. The possible behaviors are:
1598 * Able to scan and finding all the available AP
1599 * Not able to associate with any AP
1600 * On those platforms, WiFi communication can be restored by set
1601 * "bt_coex_active" module parameter to "false"
1602 *
1603 * default: bt_coex_active = true (BT_COEX_ENABLE)
1604 */
1605 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
1606 bool, S_IRUGO);
1607 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1608
1609 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
1610 MODULE_PARM_DESC(led_mode, "0=system default, "
1611 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1612
1613 module_param_named(power_save, iwlagn_mod_params.power_save,
1614 bool, S_IRUGO);
1615 MODULE_PARM_DESC(power_save,
1616 "enable WiFi power management (default: disable)");
1617
1618 module_param_named(power_level, iwlagn_mod_params.power_level,
1619 int, S_IRUGO);
1620 MODULE_PARM_DESC(power_level,
1621 "default power save level (range from 1 - 5, default: 1)");
1622
1623 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
1624 bool, S_IRUGO);
1625 MODULE_PARM_DESC(auto_agg,
1626 "enable agg w/o check traffic load (default: enable)");
1627
1628 /*
1629 * For now, keep using power level 1 instead of automatically
1630 * adjusting ...
1631 */
1632 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
1633 bool, S_IRUGO);
1634 MODULE_PARM_DESC(no_sleep_autoadjust,
1635 "don't automatically adjust sleep level "
1636 "according to maximum network latency (default: true)");
1637