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iwlwifi: move ucode_owner to priv
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobafded2947edd20babee400ff310eb87d63d9fb75
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
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 */
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
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
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
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->shrd->status))
248 return;
249
250 /* dont send host command if rf-kill is on */
251 if (!iwl_is_ready_rf(priv->shrd))
252 return;
253 iwlagn_send_advance_bt_config(priv);
254 }
255
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->shrd->status))
265 goto out;
266
267 /* dont send host command if rf-kill is on */
268 if (!iwl_is_ready_rf(priv->shrd))
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 */
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->shrd->status))
304 return;
305
306 /* dont send host command if rf-kill is on */
307 if (!iwl_is_ready_rf(priv->shrd))
308 return;
309
310 iwl_send_statistics_request(priv, CMD_ASYNC, false);
311 }
312
313
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 (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 rmb();
338
339 /*
340 * Refuse to read more than would have fit into the log from
341 * the current start_idx. This used to happen due to the race
342 * described below, but now WARN because the code below should
343 * prevent it from happening here.
344 */
345 if (WARN_ON(num_events > capacity - start_idx))
346 num_events = capacity - start_idx;
347
348 /*
349 * "time" is actually "data" for mode 0 (no timestamp).
350 * place event id # at far right for easier visual parsing.
351 */
352 for (i = 0; i < num_events; i++) {
353 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
354 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
355 if (mode == 0) {
356 trace_iwlwifi_dev_ucode_cont_event(
357 trans(priv)->dev, 0, time, ev);
358 } else {
359 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
360 trace_iwlwifi_dev_ucode_cont_event(
361 trans(priv)->dev, time, data, ev);
362 }
363 }
364 /* Allow device to power down */
365 iwl_release_nic_access(trans(priv));
366 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
367 }
368
369 static void iwl_continuous_event_trace(struct iwl_priv *priv)
370 {
371 u32 capacity; /* event log capacity in # entries */
372 struct {
373 u32 capacity;
374 u32 mode;
375 u32 wrap_counter;
376 u32 write_counter;
377 } __packed read;
378 u32 base; /* SRAM byte address of event log header */
379 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
380 u32 num_wraps; /* # times uCode wrapped to top of log */
381 u32 next_entry; /* index of next entry to be written by uCode */
382
383 base = priv->shrd->device_pointers.log_event_table;
384 if (iwlagn_hw_valid_rtc_data_addr(base)) {
385 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
386
387 capacity = read.capacity;
388 mode = read.mode;
389 num_wraps = read.wrap_counter;
390 next_entry = read.write_counter;
391 } else
392 return;
393
394 /*
395 * Unfortunately, the uCode doesn't use temporary variables.
396 * Therefore, it can happen that we read next_entry == capacity,
397 * which really means next_entry == 0.
398 */
399 if (unlikely(next_entry == capacity))
400 next_entry = 0;
401 /*
402 * Additionally, the uCode increases the write pointer before
403 * the wraps counter, so if the write pointer is smaller than
404 * the old write pointer (wrap occurred) but we read that no
405 * wrap occurred, we actually read between the next_entry and
406 * num_wraps update (this does happen in practice!!) -- take
407 * that into account by increasing num_wraps.
408 */
409 if (unlikely(next_entry < priv->event_log.next_entry &&
410 num_wraps == priv->event_log.num_wraps))
411 num_wraps++;
412
413 if (num_wraps == priv->event_log.num_wraps) {
414 iwl_print_cont_event_trace(
415 priv, base, priv->event_log.next_entry,
416 next_entry - priv->event_log.next_entry,
417 capacity, mode);
418
419 priv->event_log.non_wraps_count++;
420 } else {
421 if (num_wraps - priv->event_log.num_wraps > 1)
422 priv->event_log.wraps_more_count++;
423 else
424 priv->event_log.wraps_once_count++;
425
426 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
427 num_wraps - priv->event_log.num_wraps,
428 next_entry, priv->event_log.next_entry);
429
430 if (next_entry < priv->event_log.next_entry) {
431 iwl_print_cont_event_trace(
432 priv, base, priv->event_log.next_entry,
433 capacity - priv->event_log.next_entry,
434 capacity, mode);
435
436 iwl_print_cont_event_trace(
437 priv, base, 0, next_entry, capacity, mode);
438 } else {
439 iwl_print_cont_event_trace(
440 priv, base, next_entry,
441 capacity - next_entry,
442 capacity, mode);
443
444 iwl_print_cont_event_trace(
445 priv, base, 0, next_entry, capacity, mode);
446 }
447 }
448
449 priv->event_log.num_wraps = num_wraps;
450 priv->event_log.next_entry = next_entry;
451 }
452
453 /**
454 * iwl_bg_ucode_trace - Timer callback to log ucode event
455 *
456 * The timer is continually set to execute every
457 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
458 * this function is to perform continuous uCode event logging operation
459 * if enabled
460 */
461 static void iwl_bg_ucode_trace(unsigned long data)
462 {
463 struct iwl_priv *priv = (struct iwl_priv *)data;
464
465 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
466 return;
467
468 if (priv->event_log.ucode_trace) {
469 iwl_continuous_event_trace(priv);
470 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
471 mod_timer(&priv->ucode_trace,
472 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
473 }
474 }
475
476 static void iwl_bg_tx_flush(struct work_struct *work)
477 {
478 struct iwl_priv *priv =
479 container_of(work, struct iwl_priv, tx_flush);
480
481 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
482 return;
483
484 /* do nothing if rf-kill is on */
485 if (!iwl_is_ready_rf(priv->shrd))
486 return;
487
488 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
489 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
490 }
491
492 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
493 {
494 int i;
495
496 /*
497 * The default context is always valid,
498 * the PAN context depends on uCode.
499 */
500 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
501 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
502 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
503
504 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
505 priv->contexts[i].ctxid = i;
506
507 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
508 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
509 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
510 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
511 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
512 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
513 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
514 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
515 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
516 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
517 BIT(NL80211_IFTYPE_ADHOC);
518 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
519 BIT(NL80211_IFTYPE_STATION);
520 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
521 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
522 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
523 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
524
525 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
526 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
527 REPLY_WIPAN_RXON_TIMING;
528 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
529 REPLY_WIPAN_RXON_ASSOC;
530 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
531 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
532 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
533 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
534 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
535 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
536 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
537
538 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
539 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
540 BIT(NL80211_IFTYPE_P2P_CLIENT) |
541 BIT(NL80211_IFTYPE_P2P_GO);
542
543 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
544 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
545 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
546
547 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
548 }
549
550 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
551 {
552 struct iwl_ct_kill_config cmd;
553 struct iwl_ct_kill_throttling_config adv_cmd;
554 int ret = 0;
555
556 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
557 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
558
559 priv->thermal_throttle.ct_kill_toggle = false;
560
561 if (cfg(priv)->base_params->support_ct_kill_exit) {
562 adv_cmd.critical_temperature_enter =
563 cpu_to_le32(hw_params(priv).ct_kill_threshold);
564 adv_cmd.critical_temperature_exit =
565 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
566
567 ret = iwl_dvm_send_cmd_pdu(priv,
568 REPLY_CT_KILL_CONFIG_CMD,
569 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
570 if (ret)
571 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
572 else
573 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
574 "succeeded, critical temperature enter is %d,"
575 "exit is %d\n",
576 hw_params(priv).ct_kill_threshold,
577 hw_params(priv).ct_kill_exit_threshold);
578 } else {
579 cmd.critical_temperature_R =
580 cpu_to_le32(hw_params(priv).ct_kill_threshold);
581
582 ret = iwl_dvm_send_cmd_pdu(priv,
583 REPLY_CT_KILL_CONFIG_CMD,
584 CMD_SYNC, sizeof(cmd), &cmd);
585 if (ret)
586 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
587 else
588 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
589 "succeeded, "
590 "critical temperature is %d\n",
591 hw_params(priv).ct_kill_threshold);
592 }
593 }
594
595 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
596 {
597 struct iwl_calib_cfg_cmd calib_cfg_cmd;
598 struct iwl_host_cmd cmd = {
599 .id = CALIBRATION_CFG_CMD,
600 .len = { sizeof(struct iwl_calib_cfg_cmd), },
601 .data = { &calib_cfg_cmd, },
602 };
603
604 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
605 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
606 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
607
608 return iwl_dvm_send_cmd(priv, &cmd);
609 }
610
611
612 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
613 {
614 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
615 .valid = cpu_to_le32(valid_tx_ant),
616 };
617
618 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
619 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
620 return iwl_dvm_send_cmd_pdu(priv,
621 TX_ANT_CONFIGURATION_CMD,
622 CMD_SYNC,
623 sizeof(struct iwl_tx_ant_config_cmd),
624 &tx_ant_cmd);
625 } else {
626 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
627 return -EOPNOTSUPP;
628 }
629 }
630
631 /**
632 * iwl_alive_start - called after REPLY_ALIVE notification received
633 * from protocol/runtime uCode (initialization uCode's
634 * Alive gets handled by iwl_init_alive_start()).
635 */
636 int iwl_alive_start(struct iwl_priv *priv)
637 {
638 int ret = 0;
639 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
640
641 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
642
643 /* After the ALIVE response, we can send host commands to the uCode */
644 set_bit(STATUS_ALIVE, &priv->shrd->status);
645
646 /* Enable watchdog to monitor the driver tx queues */
647 iwl_setup_watchdog(priv);
648
649 if (iwl_is_rfkill(priv->shrd))
650 return -ERFKILL;
651
652 if (priv->event_log.ucode_trace) {
653 /* start collecting data now */
654 mod_timer(&priv->ucode_trace, jiffies);
655 }
656
657 /* download priority table before any calibration request */
658 if (cfg(priv)->bt_params &&
659 cfg(priv)->bt_params->advanced_bt_coexist) {
660 /* Configure Bluetooth device coexistence support */
661 if (cfg(priv)->bt_params->bt_sco_disable)
662 priv->bt_enable_pspoll = false;
663 else
664 priv->bt_enable_pspoll = true;
665
666 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
667 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
668 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
669 iwlagn_send_advance_bt_config(priv);
670 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
671 priv->cur_rssi_ctx = NULL;
672
673 iwl_send_prio_tbl(priv);
674
675 /* FIXME: w/a to force change uCode BT state machine */
676 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
677 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
678 if (ret)
679 return ret;
680 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
681 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
682 if (ret)
683 return ret;
684 } else {
685 /*
686 * default is 2-wire BT coexexistence support
687 */
688 iwl_send_bt_config(priv);
689 }
690
691 /*
692 * Perform runtime calibrations, including DC calibration.
693 */
694 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
695
696 ieee80211_wake_queues(priv->hw);
697
698 priv->active_rate = IWL_RATES_MASK;
699
700 /* Configure Tx antenna selection based on H/W config */
701 iwlagn_send_tx_ant_config(priv, hw_params(priv).valid_tx_ant);
702
703 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
704 struct iwl_rxon_cmd *active_rxon =
705 (struct iwl_rxon_cmd *)&ctx->active;
706 /* apply any changes in staging */
707 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
708 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
709 } else {
710 struct iwl_rxon_context *tmp;
711 /* Initialize our rx_config data */
712 for_each_context(priv, tmp)
713 iwl_connection_init_rx_config(priv, tmp);
714
715 iwlagn_set_rxon_chain(priv, ctx);
716 }
717
718 if (!priv->wowlan) {
719 /* WoWLAN ucode will not reply in the same way, skip it */
720 iwl_reset_run_time_calib(priv);
721 }
722
723 set_bit(STATUS_READY, &priv->shrd->status);
724
725 /* Configure the adapter for unassociated operation */
726 ret = iwlagn_commit_rxon(priv, ctx);
727 if (ret)
728 return ret;
729
730 /* At this point, the NIC is initialized and operational */
731 iwl_rf_kill_ct_config(priv);
732
733 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
734
735 return iwl_power_update_mode(priv, true);
736 }
737
738 /**
739 * iwl_clear_driver_stations - clear knowledge of all stations from driver
740 * @priv: iwl priv struct
741 *
742 * This is called during iwl_down() to make sure that in the case
743 * we're coming there from a hardware restart mac80211 will be
744 * able to reconfigure stations -- if we're getting there in the
745 * normal down flow then the stations will already be cleared.
746 */
747 static void iwl_clear_driver_stations(struct iwl_priv *priv)
748 {
749 struct iwl_rxon_context *ctx;
750
751 spin_lock_bh(&priv->sta_lock);
752 memset(priv->stations, 0, sizeof(priv->stations));
753 priv->num_stations = 0;
754
755 priv->ucode_key_table = 0;
756
757 for_each_context(priv, ctx) {
758 /*
759 * Remove all key information that is not stored as part
760 * of station information since mac80211 may not have had
761 * a chance to remove all the keys. When device is
762 * reconfigured by mac80211 after an error all keys will
763 * be reconfigured.
764 */
765 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
766 ctx->key_mapping_keys = 0;
767 }
768
769 spin_unlock_bh(&priv->sta_lock);
770 }
771
772 void iwl_down(struct iwl_priv *priv)
773 {
774 int exit_pending;
775
776 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
777
778 lockdep_assert_held(&priv->mutex);
779
780 iwl_scan_cancel_timeout(priv, 200);
781
782 /*
783 * If active, scanning won't cancel it, so say it expired.
784 * No race since we hold the mutex here and a new one
785 * can't come in at this time.
786 */
787 ieee80211_remain_on_channel_expired(priv->hw);
788
789 exit_pending =
790 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
791
792 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
793 * to prevent rearm timer */
794 del_timer_sync(&priv->watchdog);
795
796 iwl_clear_ucode_stations(priv, NULL);
797 iwl_dealloc_bcast_stations(priv);
798 iwl_clear_driver_stations(priv);
799
800 /* reset BT coex data */
801 priv->bt_status = 0;
802 priv->cur_rssi_ctx = NULL;
803 priv->bt_is_sco = 0;
804 if (cfg(priv)->bt_params)
805 priv->bt_traffic_load =
806 cfg(priv)->bt_params->bt_init_traffic_load;
807 else
808 priv->bt_traffic_load = 0;
809 priv->bt_full_concurrent = false;
810 priv->bt_ci_compliance = 0;
811
812 /* Wipe out the EXIT_PENDING status bit if we are not actually
813 * exiting the module */
814 if (!exit_pending)
815 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
816
817 if (priv->mac80211_registered)
818 ieee80211_stop_queues(priv->hw);
819
820 iwl_trans_stop_device(trans(priv));
821
822 /* Clear out all status bits but a few that are stable across reset */
823 priv->shrd->status &=
824 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
825 STATUS_RF_KILL_HW |
826 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
827 STATUS_GEO_CONFIGURED |
828 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
829 STATUS_FW_ERROR |
830 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
831 STATUS_EXIT_PENDING;
832
833 dev_kfree_skb(priv->beacon_skb);
834 priv->beacon_skb = NULL;
835 }
836
837 /*****************************************************************************
838 *
839 * Workqueue callbacks
840 *
841 *****************************************************************************/
842
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->shrd->status) ||
851 test_bit(STATUS_SCANNING, &priv->shrd->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
864 void iwlagn_prepare_restart(struct iwl_priv *priv)
865 {
866 struct iwl_rxon_context *ctx;
867 bool bt_full_concurrent;
868 u8 bt_ci_compliance;
869 u8 bt_load;
870 u8 bt_status;
871 bool bt_is_sco;
872
873 lockdep_assert_held(&priv->mutex);
874
875 for_each_context(priv, ctx)
876 ctx->vif = NULL;
877 priv->is_open = 0;
878
879 /*
880 * __iwl_down() will clear the BT status variables,
881 * which is correct, but when we restart we really
882 * want to keep them so restore them afterwards.
883 *
884 * The restart process will later pick them up and
885 * re-configure the hw when we reconfigure the BT
886 * command.
887 */
888 bt_full_concurrent = priv->bt_full_concurrent;
889 bt_ci_compliance = priv->bt_ci_compliance;
890 bt_load = priv->bt_traffic_load;
891 bt_status = priv->bt_status;
892 bt_is_sco = priv->bt_is_sco;
893
894 iwl_down(priv);
895
896 priv->bt_full_concurrent = bt_full_concurrent;
897 priv->bt_ci_compliance = bt_ci_compliance;
898 priv->bt_traffic_load = bt_load;
899 priv->bt_status = bt_status;
900 priv->bt_is_sco = bt_is_sco;
901 }
902
903 static void iwl_bg_restart(struct work_struct *data)
904 {
905 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
906
907 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
908 return;
909
910 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
911 mutex_lock(&priv->mutex);
912 iwlagn_prepare_restart(priv);
913 mutex_unlock(&priv->mutex);
914 iwl_cancel_deferred_work(priv);
915 ieee80211_restart_hw(priv->hw);
916 } else {
917 WARN_ON(1);
918 }
919 }
920
921
922
923
924 void iwlagn_disable_roc(struct iwl_priv *priv)
925 {
926 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
927
928 lockdep_assert_held(&priv->mutex);
929
930 if (!priv->hw_roc_setup)
931 return;
932
933 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
934 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
935
936 priv->hw_roc_channel = NULL;
937
938 memset(ctx->staging.node_addr, 0, ETH_ALEN);
939
940 iwlagn_commit_rxon(priv, ctx);
941
942 ctx->is_active = false;
943 priv->hw_roc_setup = false;
944 }
945
946 static void iwlagn_disable_roc_work(struct work_struct *work)
947 {
948 struct iwl_priv *priv = container_of(work, struct iwl_priv,
949 hw_roc_disable_work.work);
950
951 mutex_lock(&priv->mutex);
952 iwlagn_disable_roc(priv);
953 mutex_unlock(&priv->mutex);
954 }
955
956 /*****************************************************************************
957 *
958 * driver setup and teardown
959 *
960 *****************************************************************************/
961
962 static void iwl_setup_deferred_work(struct iwl_priv *priv)
963 {
964 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
965
966 init_waitqueue_head(&priv->shrd->wait_command_queue);
967
968 INIT_WORK(&priv->restart, iwl_bg_restart);
969 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
970 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
971 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
972 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
973 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
974 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
975 iwlagn_disable_roc_work);
976
977 iwl_setup_scan_deferred_work(priv);
978
979 if (cfg(priv)->lib->bt_setup_deferred_work)
980 cfg(priv)->lib->bt_setup_deferred_work(priv);
981
982 init_timer(&priv->statistics_periodic);
983 priv->statistics_periodic.data = (unsigned long)priv;
984 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
985
986 init_timer(&priv->ucode_trace);
987 priv->ucode_trace.data = (unsigned long)priv;
988 priv->ucode_trace.function = iwl_bg_ucode_trace;
989
990 init_timer(&priv->watchdog);
991 priv->watchdog.data = (unsigned long)priv;
992 priv->watchdog.function = iwl_bg_watchdog;
993 }
994
995 void iwl_cancel_deferred_work(struct iwl_priv *priv)
996 {
997 if (cfg(priv)->lib->cancel_deferred_work)
998 cfg(priv)->lib->cancel_deferred_work(priv);
999
1000 cancel_work_sync(&priv->run_time_calib_work);
1001 cancel_work_sync(&priv->beacon_update);
1002
1003 iwl_cancel_scan_deferred_work(priv);
1004
1005 cancel_work_sync(&priv->bt_full_concurrency);
1006 cancel_work_sync(&priv->bt_runtime_config);
1007 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1008
1009 del_timer_sync(&priv->statistics_periodic);
1010 del_timer_sync(&priv->ucode_trace);
1011 }
1012
1013 static void iwl_init_hw_rates(struct iwl_priv *priv,
1014 struct ieee80211_rate *rates)
1015 {
1016 int i;
1017
1018 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1019 rates[i].bitrate = iwl_rates[i].ieee * 5;
1020 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1021 rates[i].hw_value_short = i;
1022 rates[i].flags = 0;
1023 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1024 /*
1025 * If CCK != 1M then set short preamble rate flag.
1026 */
1027 rates[i].flags |=
1028 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1029 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1030 }
1031 }
1032 }
1033
1034 static int iwl_init_drv(struct iwl_priv *priv)
1035 {
1036 int ret;
1037
1038 spin_lock_init(&priv->sta_lock);
1039
1040 mutex_init(&priv->mutex);
1041
1042 INIT_LIST_HEAD(&priv->calib_results);
1043
1044 priv->ieee_channels = NULL;
1045 priv->ieee_rates = NULL;
1046 priv->band = IEEE80211_BAND_2GHZ;
1047
1048 priv->plcp_delta_threshold =
1049 cfg(priv)->base_params->plcp_delta_threshold;
1050
1051 priv->iw_mode = NL80211_IFTYPE_STATION;
1052 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1053 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1054 priv->agg_tids_count = 0;
1055
1056 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1057
1058 /* initialize force reset */
1059 priv->force_reset[IWL_RF_RESET].reset_duration =
1060 IWL_DELAY_NEXT_FORCE_RF_RESET;
1061 priv->force_reset[IWL_FW_RESET].reset_duration =
1062 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1063
1064 priv->rx_statistics_jiffies = jiffies;
1065
1066 /* Choose which receivers/antennas to use */
1067 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1068
1069 iwl_init_scan_params(priv);
1070
1071 /* init bt coex */
1072 if (cfg(priv)->bt_params &&
1073 cfg(priv)->bt_params->advanced_bt_coexist) {
1074 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1075 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1076 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1077 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1078 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1079 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1080 }
1081
1082 ret = iwl_init_channel_map(priv);
1083 if (ret) {
1084 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1085 goto err;
1086 }
1087
1088 ret = iwl_init_geos(priv);
1089 if (ret) {
1090 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1091 goto err_free_channel_map;
1092 }
1093 iwl_init_hw_rates(priv, priv->ieee_rates);
1094
1095 return 0;
1096
1097 err_free_channel_map:
1098 iwl_free_channel_map(priv);
1099 err:
1100 return ret;
1101 }
1102
1103 static void iwl_uninit_drv(struct iwl_priv *priv)
1104 {
1105 iwl_free_geos(priv);
1106 iwl_free_channel_map(priv);
1107 if (priv->tx_cmd_pool)
1108 kmem_cache_destroy(priv->tx_cmd_pool);
1109 kfree(priv->scan_cmd);
1110 kfree(priv->beacon_cmd);
1111 kfree(rcu_dereference_raw(priv->noa_data));
1112 iwl_calib_free_results(priv);
1113 #ifdef CONFIG_IWLWIFI_DEBUGFS
1114 kfree(priv->wowlan_sram);
1115 #endif
1116 }
1117
1118 /* Size of one Rx buffer in host DRAM */
1119 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1120 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1121
1122 static void iwl_set_hw_params(struct iwl_priv *priv)
1123 {
1124 if (cfg(priv)->ht_params)
1125 hw_params(priv).use_rts_for_aggregation =
1126 cfg(priv)->ht_params->use_rts_for_aggregation;
1127
1128 if (iwlagn_mod_params.amsdu_size_8K)
1129 hw_params(priv).rx_page_order =
1130 get_order(IWL_RX_BUF_SIZE_8K);
1131 else
1132 hw_params(priv).rx_page_order =
1133 get_order(IWL_RX_BUF_SIZE_4K);
1134
1135 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1136 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1137
1138 hw_params(priv).num_ampdu_queues =
1139 cfg(priv)->base_params->num_of_ampdu_queues;
1140 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1141
1142 /* Device-specific setup */
1143 cfg(priv)->lib->set_hw_params(priv);
1144 }
1145
1146
1147
1148 static void iwl_debug_config(struct iwl_priv *priv)
1149 {
1150 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1151 #ifdef CONFIG_IWLWIFI_DEBUG
1152 "enabled\n");
1153 #else
1154 "disabled\n");
1155 #endif
1156 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1157 #ifdef CONFIG_IWLWIFI_DEBUGFS
1158 "enabled\n");
1159 #else
1160 "disabled\n");
1161 #endif
1162 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1163 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1164 "enabled\n");
1165 #else
1166 "disabled\n");
1167 #endif
1168
1169 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1170 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1171 "enabled\n");
1172 #else
1173 "disabled\n");
1174 #endif
1175 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1176 #ifdef CONFIG_IWLWIFI_P2P
1177 "enabled\n");
1178 #else
1179 "disabled\n");
1180 #endif
1181 }
1182
1183 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1184 const struct iwl_fw *fw)
1185 {
1186 int err = 0;
1187 struct iwl_priv *priv;
1188 struct ieee80211_hw *hw;
1189 struct iwl_op_mode *op_mode;
1190 u16 num_mac;
1191 u32 ucode_flags;
1192
1193 /************************
1194 * 1. Allocating HW data
1195 ************************/
1196 hw = iwl_alloc_all();
1197 if (!hw) {
1198 pr_err("%s: Cannot allocate network device\n",
1199 cfg(trans)->name);
1200 err = -ENOMEM;
1201 goto out;
1202 }
1203
1204 op_mode = hw->priv;
1205 op_mode->ops = &iwl_dvm_ops;
1206 priv = IWL_OP_MODE_GET_DVM(op_mode);
1207 priv->shrd = trans->shrd;
1208 priv->shrd->priv = priv;
1209 priv->fw = fw;
1210 /* TODO: remove fw from shared data later */
1211 priv->shrd->fw = fw;
1212
1213 iwl_trans_configure(trans(priv), op_mode);
1214
1215 /* At this point both hw and priv are allocated. */
1216
1217 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1218
1219 /* show what debugging capabilities we have */
1220 iwl_debug_config(priv);
1221
1222 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1223
1224 /* is antenna coupling more than 35dB ? */
1225 priv->bt_ant_couple_ok =
1226 (iwlagn_mod_params.ant_coupling >
1227 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1228 true : false;
1229
1230 /* enable/disable bt channel inhibition */
1231 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1232 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1233 (priv->bt_ch_announce) ? "On" : "Off");
1234
1235 if (iwl_alloc_traffic_mem(priv))
1236 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1237
1238 /* these spin locks will be used in apm_ops.init and EEPROM access
1239 * we should init now
1240 */
1241 spin_lock_init(&trans(priv)->reg_lock);
1242 spin_lock_init(&priv->statistics.lock);
1243
1244 /***********************
1245 * 3. Read REV register
1246 ***********************/
1247 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1248 cfg(priv)->name, trans(priv)->hw_rev);
1249
1250 err = iwl_trans_start_hw(trans(priv));
1251 if (err)
1252 goto out_free_traffic_mem;
1253
1254 /*****************
1255 * 4. Read EEPROM
1256 *****************/
1257 /* Read the EEPROM */
1258 err = iwl_eeprom_init(trans(priv), trans(priv)->hw_rev);
1259 /* Reset chip to save power until we load uCode during "up". */
1260 iwl_trans_stop_hw(trans(priv));
1261 if (err) {
1262 IWL_ERR(priv, "Unable to init EEPROM\n");
1263 goto out_free_traffic_mem;
1264 }
1265 err = iwl_eeprom_check_version(priv);
1266 if (err)
1267 goto out_free_eeprom;
1268
1269 err = iwl_eeprom_init_hw_params(priv);
1270 if (err)
1271 goto out_free_eeprom;
1272
1273 /* extract MAC Address */
1274 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1275 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1276 priv->hw->wiphy->addresses = priv->addresses;
1277 priv->hw->wiphy->n_addresses = 1;
1278 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1279 if (num_mac > 1) {
1280 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1281 ETH_ALEN);
1282 priv->addresses[1].addr[5]++;
1283 priv->hw->wiphy->n_addresses++;
1284 }
1285
1286 /************************
1287 * 5. Setup HW constants
1288 ************************/
1289 iwl_set_hw_params(priv);
1290
1291 ucode_flags = fw->ucode_capa.flags;
1292
1293 #ifndef CONFIG_IWLWIFI_P2P
1294 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1295 #endif
1296 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1297 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1298
1299 /*
1300 * if not PAN, then don't support P2P -- might be a uCode
1301 * packaging bug or due to the eeprom check above
1302 */
1303 if (!(ucode_flags & IWL_UCODE_TLV_FLAGS_PAN))
1304 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1305
1306
1307 /*******************
1308 * 6. Setup priv
1309 *******************/
1310
1311 err = iwl_init_drv(priv);
1312 if (err)
1313 goto out_free_eeprom;
1314 /* At this point both hw and priv are initialized. */
1315
1316 /********************
1317 * 7. Setup services
1318 ********************/
1319 iwl_setup_deferred_work(priv);
1320 iwl_setup_rx_handlers(priv);
1321 iwl_testmode_init(priv);
1322
1323 iwl_power_initialize(priv);
1324 iwl_tt_initialize(priv);
1325
1326 snprintf(priv->hw->wiphy->fw_version,
1327 sizeof(priv->hw->wiphy->fw_version),
1328 "%s", fw->fw_version);
1329
1330 priv->new_scan_threshold_behaviour =
1331 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1332
1333 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1334 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1335 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1336 } else {
1337 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1338 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1339 }
1340
1341 priv->phy_calib_chain_noise_reset_cmd =
1342 fw->ucode_capa.standard_phy_calibration_size;
1343 priv->phy_calib_chain_noise_gain_cmd =
1344 fw->ucode_capa.standard_phy_calibration_size + 1;
1345
1346 /* initialize all valid contexts */
1347 iwl_init_context(priv, ucode_flags);
1348
1349 /**************************************************
1350 * This is still part of probe() in a sense...
1351 *
1352 * 9. Setup and register with mac80211 and debugfs
1353 **************************************************/
1354 err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
1355 if (err)
1356 goto out_destroy_workqueue;
1357
1358 err = iwl_dbgfs_register(priv, DRV_NAME);
1359 if (err)
1360 IWL_ERR(priv,
1361 "failed to create debugfs files. Ignoring error: %d\n",
1362 err);
1363
1364 return op_mode;
1365
1366 out_destroy_workqueue:
1367 destroy_workqueue(priv->workqueue);
1368 priv->workqueue = NULL;
1369 iwl_uninit_drv(priv);
1370 out_free_eeprom:
1371 iwl_eeprom_free(priv->shrd);
1372 out_free_traffic_mem:
1373 iwl_free_traffic_mem(priv);
1374 ieee80211_free_hw(priv->hw);
1375 out:
1376 op_mode = NULL;
1377 return op_mode;
1378 }
1379
1380 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1381 {
1382 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1383
1384 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1385
1386 iwl_dbgfs_unregister(priv);
1387
1388 iwl_testmode_cleanup(priv);
1389 iwlagn_mac_unregister(priv);
1390
1391 iwl_tt_exit(priv);
1392
1393 /*This will stop the queues, move the device to low power state */
1394 iwl_trans_stop_device(trans(priv));
1395
1396 iwl_eeprom_free(priv->shrd);
1397
1398 /*netif_stop_queue(dev); */
1399 flush_workqueue(priv->workqueue);
1400
1401 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1402 * priv->workqueue... so we can't take down the workqueue
1403 * until now... */
1404 destroy_workqueue(priv->workqueue);
1405 priv->workqueue = NULL;
1406 iwl_free_traffic_mem(priv);
1407
1408 iwl_uninit_drv(priv);
1409
1410 dev_kfree_skb(priv->beacon_skb);
1411
1412 ieee80211_free_hw(priv->hw);
1413 }
1414
1415 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1416 {
1417 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1418
1419 if (!iwl_check_for_ct_kill(priv)) {
1420 IWL_ERR(priv, "Restarting adapter queue is full\n");
1421 iwl_nic_error(op_mode);
1422 }
1423 }
1424
1425 const struct iwl_op_mode_ops iwl_dvm_ops = {
1426 .start = iwl_op_mode_dvm_start,
1427 .stop = iwl_op_mode_dvm_stop,
1428 .rx = iwl_rx_dispatch,
1429 .queue_full = iwl_stop_sw_queue,
1430 .queue_not_full = iwl_wake_sw_queue,
1431 .hw_rf_kill = iwl_set_hw_rfkill_state,
1432 .free_skb = iwl_free_skb,
1433 .nic_error = iwl_nic_error,
1434 .cmd_queue_full = iwl_cmd_queue_full,
1435 };
1436
1437 /*****************************************************************************
1438 *
1439 * driver and module entry point
1440 *
1441 *****************************************************************************/
1442 static int __init iwl_init(void)
1443 {
1444
1445 int ret;
1446 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1447 pr_info(DRV_COPYRIGHT "\n");
1448
1449 ret = iwlagn_rate_control_register();
1450 if (ret) {
1451 pr_err("Unable to register rate control algorithm: %d\n", ret);
1452 return ret;
1453 }
1454
1455 ret = iwl_pci_register_driver();
1456
1457 if (ret)
1458 goto error_register;
1459 return ret;
1460
1461 error_register:
1462 iwlagn_rate_control_unregister();
1463 return ret;
1464 }
1465
1466 static void __exit iwl_exit(void)
1467 {
1468 iwl_pci_unregister_driver();
1469 iwlagn_rate_control_unregister();
1470 }
1471
1472 module_exit(iwl_exit);
1473 module_init(iwl_init);
1474
1475 #ifdef CONFIG_IWLWIFI_DEBUG
1476 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1477 S_IRUGO | S_IWUSR);
1478 MODULE_PARM_DESC(debug, "debug output mask");
1479 #endif
1480
1481 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1482 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1483 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1484 MODULE_PARM_DESC(11n_disable,
1485 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1486 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1487 int, S_IRUGO);
1488 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1489 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
1490 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1491
1492 module_param_named(ucode_alternative,
1493 iwlagn_mod_params.wanted_ucode_alternative,
1494 int, S_IRUGO);
1495 MODULE_PARM_DESC(ucode_alternative,
1496 "specify ucode alternative to use from ucode file");
1497
1498 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
1499 int, S_IRUGO);
1500 MODULE_PARM_DESC(antenna_coupling,
1501 "specify antenna coupling in dB (defualt: 0 dB)");
1502
1503 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
1504 bool, S_IRUGO);
1505 MODULE_PARM_DESC(bt_ch_inhibition,
1506 "Enable BT channel inhibition (default: enable)");
1507
1508 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
1509 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1510
1511 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
1512 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1513
1514 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1515 MODULE_PARM_DESC(wd_disable,
1516 "Disable stuck queue watchdog timer 0=system default, "
1517 "1=disable, 2=enable (default: 0)");
1518
1519 /*
1520 * set bt_coex_active to true, uCode will do kill/defer
1521 * every time the priority line is asserted (BT is sending signals on the
1522 * priority line in the PCIx).
1523 * set bt_coex_active to false, uCode will ignore the BT activity and
1524 * perform the normal operation
1525 *
1526 * User might experience transmit issue on some platform due to WiFi/BT
1527 * co-exist problem. The possible behaviors are:
1528 * Able to scan and finding all the available AP
1529 * Not able to associate with any AP
1530 * On those platforms, WiFi communication can be restored by set
1531 * "bt_coex_active" module parameter to "false"
1532 *
1533 * default: bt_coex_active = true (BT_COEX_ENABLE)
1534 */
1535 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
1536 bool, S_IRUGO);
1537 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1538
1539 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
1540 MODULE_PARM_DESC(led_mode, "0=system default, "
1541 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1542
1543 module_param_named(power_save, iwlagn_mod_params.power_save,
1544 bool, S_IRUGO);
1545 MODULE_PARM_DESC(power_save,
1546 "enable WiFi power management (default: disable)");
1547
1548 module_param_named(power_level, iwlagn_mod_params.power_level,
1549 int, S_IRUGO);
1550 MODULE_PARM_DESC(power_level,
1551 "default power save level (range from 1 - 5, default: 1)");
1552
1553 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
1554 bool, S_IRUGO);
1555 MODULE_PARM_DESC(auto_agg,
1556 "enable agg w/o check traffic load (default: enable)");
1557
1558 /*
1559 * For now, keep using power level 1 instead of automatically
1560 * adjusting ...
1561 */
1562 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
1563 bool, S_IRUGO);
1564 MODULE_PARM_DESC(no_sleep_autoadjust,
1565 "don't automatically adjust sleep level "
1566 "according to maximum network latency (default: true)");
Linus' kernel tree