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iwlagn: more comments for bt channel inhibition
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
bloba79ee7a451d14bc120b17138e286f5801c6568ef
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 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/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <linux/if_arp.h>
41
42 #include <net/mac80211.h>
43
44 #include <asm/div64.h>
45
46 #include "iwl-eeprom.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-helpers.h"
51 #include "iwl-sta.h"
52 #include "iwl-agn-calib.h"
53 #include "iwl-agn.h"
54 #include "iwl-shared.h"
55 #include "iwl-bus.h"
56 #include "iwl-trans.h"
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 */
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #define DRV_VERSION IWLWIFI_VERSION VD
76
77
78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
79 MODULE_VERSION(DRV_VERSION);
80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
81 MODULE_LICENSE("GPL");
82
83 void iwl_update_chain_flags(struct iwl_priv *priv)
84 {
85 struct iwl_rxon_context *ctx;
86
87 for_each_context(priv, ctx) {
88 iwlagn_set_rxon_chain(priv, ctx);
89 if (ctx->active.rx_chain != ctx->staging.rx_chain)
90 iwlagn_commit_rxon(priv, ctx);
91 }
92 }
93
94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
96 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
98 {
99 u16 tim_idx;
100 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
101
102 /*
103 * The index is relative to frame start but we start looking at the
104 * variable-length part of the beacon.
105 */
106 tim_idx = mgmt->u.beacon.variable - beacon;
107
108 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
109 while ((tim_idx < (frame_size - 2)) &&
110 (beacon[tim_idx] != WLAN_EID_TIM))
111 tim_idx += beacon[tim_idx+1] + 2;
112
113 /* If TIM field was found, set variables */
114 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
115 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
116 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
117 } else
118 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
119 }
120
121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
122 {
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
126 .flags = CMD_SYNC,
127 };
128 struct ieee80211_tx_info *info;
129 u32 frame_size;
130 u32 rate_flags;
131 u32 rate;
132
133 /*
134 * We have to set up the TX command, the TX Beacon command, and the
135 * beacon contents.
136 */
137
138 lockdep_assert_held(&priv->shrd->mutex);
139
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
142 return 0;
143 }
144
145 if (WARN_ON(!priv->beacon_skb))
146 return -EINVAL;
147
148 /* Allocate beacon command */
149 if (!priv->beacon_cmd)
150 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
151 tx_beacon_cmd = priv->beacon_cmd;
152 if (!tx_beacon_cmd)
153 return -ENOMEM;
154
155 frame_size = priv->beacon_skb->len;
156
157 /* Set up TX command fields */
158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
160 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
161 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
162 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
163
164 /* Set up TX beacon command fields */
165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
166 frame_size);
167
168 /* Set up packet rate and flags */
169 info = IEEE80211_SKB_CB(priv->beacon_skb);
170
171 /*
172 * Let's set up the rate at least somewhat correctly;
173 * it will currently not actually be used by the uCode,
174 * it uses the broadcast station's rate instead.
175 */
176 if (info->control.rates[0].idx < 0 ||
177 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
178 rate = 0;
179 else
180 rate = info->control.rates[0].idx;
181
182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
183 hw_params(priv).valid_tx_ant);
184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
185
186 /* In mac80211, rates for 5 GHz start at 0 */
187 if (info->band == IEEE80211_BAND_5GHZ)
188 rate += IWL_FIRST_OFDM_RATE;
189 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
190 rate_flags |= RATE_MCS_CCK_MSK;
191
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
194
195 /* Submit command */
196 cmd.len[0] = sizeof(*tx_beacon_cmd);
197 cmd.data[0] = tx_beacon_cmd;
198 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
199 cmd.len[1] = frame_size;
200 cmd.data[1] = priv->beacon_skb->data;
201 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
202
203 return iwl_trans_send_cmd(trans(priv), &cmd);
204 }
205
206 static void iwl_bg_beacon_update(struct work_struct *work)
207 {
208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
210 struct sk_buff *beacon;
211
212 mutex_lock(&priv->shrd->mutex);
213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
215 goto out;
216 }
217
218 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
219 /*
220 * The ucode will send beacon notifications even in
221 * IBSS mode, but we don't want to process them. But
222 * we need to defer the type check to here due to
223 * requiring locking around the beacon_ctx access.
224 */
225 goto out;
226 }
227
228 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
229 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
230 if (!beacon) {
231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
232 goto out;
233 }
234
235 /* new beacon skb is allocated every time; dispose previous.*/
236 dev_kfree_skb(priv->beacon_skb);
237
238 priv->beacon_skb = beacon;
239
240 iwlagn_send_beacon_cmd(priv);
241 out:
242 mutex_unlock(&priv->shrd->mutex);
243 }
244
245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
246 {
247 struct iwl_priv *priv =
248 container_of(work, struct iwl_priv, bt_runtime_config);
249
250 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
251 return;
252
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv))
255 return;
256 iwlagn_send_advance_bt_config(priv);
257 }
258
259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
260 {
261 struct iwl_priv *priv =
262 container_of(work, struct iwl_priv, bt_full_concurrency);
263 struct iwl_rxon_context *ctx;
264
265 mutex_lock(&priv->shrd->mutex);
266
267 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
268 goto out;
269
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv))
272 goto out;
273
274 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
275 priv->bt_full_concurrent ?
276 "full concurrency" : "3-wire");
277
278 /*
279 * LQ & RXON updated cmds must be sent before BT Config cmd
280 * to avoid 3-wire collisions
281 */
282 for_each_context(priv, ctx) {
283 iwlagn_set_rxon_chain(priv, ctx);
284 iwlagn_commit_rxon(priv, ctx);
285 }
286
287 iwlagn_send_advance_bt_config(priv);
288 out:
289 mutex_unlock(&priv->shrd->mutex);
290 }
291
292 /**
293 * iwl_bg_statistics_periodic - Timer callback to queue statistics
294 *
295 * This callback is provided in order to send a statistics request.
296 *
297 * This timer function is continually reset to execute within
298 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
299 * was received. We need to ensure we receive the statistics in order
300 * to update the temperature used for calibrating the TXPOWER.
301 */
302 static void iwl_bg_statistics_periodic(unsigned long data)
303 {
304 struct iwl_priv *priv = (struct iwl_priv *)data;
305
306 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
307 return;
308
309 /* dont send host command if rf-kill is on */
310 if (!iwl_is_ready_rf(priv))
311 return;
312
313 iwl_send_statistics_request(priv, CMD_ASYNC, false);
314 }
315
316
317 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
318 u32 start_idx, u32 num_events,
319 u32 mode)
320 {
321 u32 i;
322 u32 ptr; /* SRAM byte address of log data */
323 u32 ev, time, data; /* event log data */
324 unsigned long reg_flags;
325
326 if (mode == 0)
327 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
328 else
329 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
330
331 /* Make sure device is powered up for SRAM reads */
332 spin_lock_irqsave(&priv->reg_lock, reg_flags);
333 if (iwl_grab_nic_access(priv)) {
334 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
335 return;
336 }
337
338 /* Set starting address; reads will auto-increment */
339 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
340 rmb();
341
342 /*
343 * "time" is actually "data" for mode 0 (no timestamp).
344 * place event id # at far right for easier visual parsing.
345 */
346 for (i = 0; i < num_events; i++) {
347 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
348 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
349 if (mode == 0) {
350 trace_iwlwifi_dev_ucode_cont_event(priv,
351 0, time, ev);
352 } else {
353 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
354 trace_iwlwifi_dev_ucode_cont_event(priv,
355 time, data, ev);
356 }
357 }
358 /* Allow device to power down */
359 iwl_release_nic_access(priv);
360 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
361 }
362
363 static void iwl_continuous_event_trace(struct iwl_priv *priv)
364 {
365 u32 capacity; /* event log capacity in # entries */
366 u32 base; /* SRAM byte address of event log header */
367 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
368 u32 num_wraps; /* # times uCode wrapped to top of log */
369 u32 next_entry; /* index of next entry to be written by uCode */
370
371 base = priv->device_pointers.error_event_table;
372 if (iwlagn_hw_valid_rtc_data_addr(base)) {
373 capacity = iwl_read_targ_mem(priv, base);
374 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
375 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
376 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
377 } else
378 return;
379
380 if (num_wraps == priv->event_log.num_wraps) {
381 iwl_print_cont_event_trace(priv,
382 base, priv->event_log.next_entry,
383 next_entry - priv->event_log.next_entry,
384 mode);
385 priv->event_log.non_wraps_count++;
386 } else {
387 if ((num_wraps - priv->event_log.num_wraps) > 1)
388 priv->event_log.wraps_more_count++;
389 else
390 priv->event_log.wraps_once_count++;
391 trace_iwlwifi_dev_ucode_wrap_event(priv,
392 num_wraps - priv->event_log.num_wraps,
393 next_entry, priv->event_log.next_entry);
394 if (next_entry < priv->event_log.next_entry) {
395 iwl_print_cont_event_trace(priv, base,
396 priv->event_log.next_entry,
397 capacity - priv->event_log.next_entry,
398 mode);
399
400 iwl_print_cont_event_trace(priv, base, 0,
401 next_entry, mode);
402 } else {
403 iwl_print_cont_event_trace(priv, base,
404 next_entry, capacity - next_entry,
405 mode);
406
407 iwl_print_cont_event_trace(priv, base, 0,
408 next_entry, mode);
409 }
410 }
411 priv->event_log.num_wraps = num_wraps;
412 priv->event_log.next_entry = next_entry;
413 }
414
415 /**
416 * iwl_bg_ucode_trace - Timer callback to log ucode event
417 *
418 * The timer is continually set to execute every
419 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
420 * this function is to perform continuous uCode event logging operation
421 * if enabled
422 */
423 static void iwl_bg_ucode_trace(unsigned long data)
424 {
425 struct iwl_priv *priv = (struct iwl_priv *)data;
426
427 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
428 return;
429
430 if (priv->event_log.ucode_trace) {
431 iwl_continuous_event_trace(priv);
432 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
433 mod_timer(&priv->ucode_trace,
434 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
435 }
436 }
437
438 static void iwl_bg_tx_flush(struct work_struct *work)
439 {
440 struct iwl_priv *priv =
441 container_of(work, struct iwl_priv, tx_flush);
442
443 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
444 return;
445
446 /* do nothing if rf-kill is on */
447 if (!iwl_is_ready_rf(priv))
448 return;
449
450 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
451 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
452 }
453
454 /*****************************************************************************
455 *
456 * sysfs attributes
457 *
458 *****************************************************************************/
459
460 #ifdef CONFIG_IWLWIFI_DEBUG
461
462 /*
463 * The following adds a new attribute to the sysfs representation
464 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
465 * used for controlling the debug level.
466 *
467 * See the level definitions in iwl for details.
468 *
469 * The debug_level being managed using sysfs below is a per device debug
470 * level that is used instead of the global debug level if it (the per
471 * device debug level) is set.
472 */
473 static ssize_t show_debug_level(struct device *d,
474 struct device_attribute *attr, char *buf)
475 {
476 struct iwl_shared *shrd = dev_get_drvdata(d);
477 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd));
478 }
479 static ssize_t store_debug_level(struct device *d,
480 struct device_attribute *attr,
481 const char *buf, size_t count)
482 {
483 struct iwl_shared *shrd = dev_get_drvdata(d);
484 struct iwl_priv *priv = shrd->priv;
485 unsigned long val;
486 int ret;
487
488 ret = strict_strtoul(buf, 0, &val);
489 if (ret)
490 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
491 else {
492 shrd->dbg_level_dev = val;
493 if (iwl_alloc_traffic_mem(priv))
494 IWL_ERR(shrd->priv,
495 "Not enough memory to generate traffic log\n");
496 }
497 return strnlen(buf, count);
498 }
499
500 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
501 show_debug_level, store_debug_level);
502
503
504 #endif /* CONFIG_IWLWIFI_DEBUG */
505
506
507 static ssize_t show_temperature(struct device *d,
508 struct device_attribute *attr, char *buf)
509 {
510 struct iwl_shared *shrd = dev_get_drvdata(d);
511 struct iwl_priv *priv = shrd->priv;
512
513 if (!iwl_is_alive(priv))
514 return -EAGAIN;
515
516 return sprintf(buf, "%d\n", priv->temperature);
517 }
518
519 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
520
521 static ssize_t show_tx_power(struct device *d,
522 struct device_attribute *attr, char *buf)
523 {
524 struct iwl_priv *priv = dev_get_drvdata(d);
525
526 if (!iwl_is_ready_rf(priv))
527 return sprintf(buf, "off\n");
528 else
529 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
530 }
531
532 static ssize_t store_tx_power(struct device *d,
533 struct device_attribute *attr,
534 const char *buf, size_t count)
535 {
536 struct iwl_priv *priv = dev_get_drvdata(d);
537 unsigned long val;
538 int ret;
539
540 ret = strict_strtoul(buf, 10, &val);
541 if (ret)
542 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
543 else {
544 ret = iwl_set_tx_power(priv, val, false);
545 if (ret)
546 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
547 ret);
548 else
549 ret = count;
550 }
551 return ret;
552 }
553
554 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
555
556 static struct attribute *iwl_sysfs_entries[] = {
557 &dev_attr_temperature.attr,
558 &dev_attr_tx_power.attr,
559 #ifdef CONFIG_IWLWIFI_DEBUG
560 &dev_attr_debug_level.attr,
561 #endif
562 NULL
563 };
564
565 static struct attribute_group iwl_attribute_group = {
566 .name = NULL, /* put in device directory */
567 .attrs = iwl_sysfs_entries,
568 };
569
570 /******************************************************************************
571 *
572 * uCode download functions
573 *
574 ******************************************************************************/
575
576 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
577 {
578 if (desc->v_addr)
579 dma_free_coherent(priv->bus->dev, desc->len,
580 desc->v_addr, desc->p_addr);
581 desc->v_addr = NULL;
582 desc->len = 0;
583 }
584
585 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
586 {
587 iwl_free_fw_desc(priv, &img->code);
588 iwl_free_fw_desc(priv, &img->data);
589 }
590
591 static void iwl_dealloc_ucode(struct iwl_priv *priv)
592 {
593 iwl_free_fw_img(priv, &priv->ucode_rt);
594 iwl_free_fw_img(priv, &priv->ucode_init);
595 iwl_free_fw_img(priv, &priv->ucode_wowlan);
596 }
597
598 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
599 const void *data, size_t len)
600 {
601 if (!len) {
602 desc->v_addr = NULL;
603 return -EINVAL;
604 }
605
606 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
607 &desc->p_addr, GFP_KERNEL);
608 if (!desc->v_addr)
609 return -ENOMEM;
610
611 desc->len = len;
612 memcpy(desc->v_addr, data, len);
613 return 0;
614 }
615
616 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
617 {
618 static const u8 iwlagn_bss_ac_to_fifo[] = {
619 IWL_TX_FIFO_VO,
620 IWL_TX_FIFO_VI,
621 IWL_TX_FIFO_BE,
622 IWL_TX_FIFO_BK,
623 };
624 static const u8 iwlagn_bss_ac_to_queue[] = {
625 0, 1, 2, 3,
626 };
627 static const u8 iwlagn_pan_ac_to_fifo[] = {
628 IWL_TX_FIFO_VO_IPAN,
629 IWL_TX_FIFO_VI_IPAN,
630 IWL_TX_FIFO_BE_IPAN,
631 IWL_TX_FIFO_BK_IPAN,
632 };
633 static const u8 iwlagn_pan_ac_to_queue[] = {
634 7, 6, 5, 4,
635 };
636 int i;
637
638 /*
639 * The default context is always valid,
640 * the PAN context depends on uCode.
641 */
642 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
643 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
644 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
645
646 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
647 priv->contexts[i].ctxid = i;
648
649 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
650 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
651 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
652 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
653 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
654 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
655 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
656 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
657 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
658 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
659 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
660 BIT(NL80211_IFTYPE_ADHOC);
661 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
662 BIT(NL80211_IFTYPE_STATION);
663 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
664 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
665 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
666 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
667
668 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
669 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
670 REPLY_WIPAN_RXON_TIMING;
671 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
672 REPLY_WIPAN_RXON_ASSOC;
673 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
674 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
675 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
676 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
677 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
678 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
679 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
680 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
681 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
682 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
683
684 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
685 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
686 BIT(NL80211_IFTYPE_P2P_CLIENT) |
687 BIT(NL80211_IFTYPE_P2P_GO);
688
689 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
690 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
691 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
692
693 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
694 }
695
696
697 struct iwlagn_ucode_capabilities {
698 u32 max_probe_length;
699 u32 standard_phy_calibration_size;
700 u32 flags;
701 };
702
703 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
704 static int iwl_mac_setup_register(struct iwl_priv *priv,
705 struct iwlagn_ucode_capabilities *capa);
706
707 #define UCODE_EXPERIMENTAL_INDEX 100
708 #define UCODE_EXPERIMENTAL_TAG "exp"
709
710 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
711 {
712 const char *name_pre = priv->cfg->fw_name_pre;
713 char tag[8];
714
715 if (first) {
716 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
717 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
718 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
719 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
720 #endif
721 priv->fw_index = priv->cfg->ucode_api_max;
722 sprintf(tag, "%d", priv->fw_index);
723 } else {
724 priv->fw_index--;
725 sprintf(tag, "%d", priv->fw_index);
726 }
727
728 if (priv->fw_index < priv->cfg->ucode_api_min) {
729 IWL_ERR(priv, "no suitable firmware found!\n");
730 return -ENOENT;
731 }
732
733 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
734
735 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
736 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
737 ? "EXPERIMENTAL " : "",
738 priv->firmware_name);
739
740 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
741 priv->bus->dev,
742 GFP_KERNEL, priv, iwl_ucode_callback);
743 }
744
745 struct iwlagn_firmware_pieces {
746 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
747 size_t inst_size, data_size, init_size, init_data_size,
748 wowlan_inst_size, wowlan_data_size;
749
750 u32 build;
751
752 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
753 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
754 };
755
756 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
757 const struct firmware *ucode_raw,
758 struct iwlagn_firmware_pieces *pieces)
759 {
760 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
761 u32 api_ver, hdr_size;
762 const u8 *src;
763
764 priv->ucode_ver = le32_to_cpu(ucode->ver);
765 api_ver = IWL_UCODE_API(priv->ucode_ver);
766
767 switch (api_ver) {
768 default:
769 hdr_size = 28;
770 if (ucode_raw->size < hdr_size) {
771 IWL_ERR(priv, "File size too small!\n");
772 return -EINVAL;
773 }
774 pieces->build = le32_to_cpu(ucode->u.v2.build);
775 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
776 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
777 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
778 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
779 src = ucode->u.v2.data;
780 break;
781 case 0:
782 case 1:
783 case 2:
784 hdr_size = 24;
785 if (ucode_raw->size < hdr_size) {
786 IWL_ERR(priv, "File size too small!\n");
787 return -EINVAL;
788 }
789 pieces->build = 0;
790 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
791 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
792 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
793 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
794 src = ucode->u.v1.data;
795 break;
796 }
797
798 /* Verify size of file vs. image size info in file's header */
799 if (ucode_raw->size != hdr_size + pieces->inst_size +
800 pieces->data_size + pieces->init_size +
801 pieces->init_data_size) {
802
803 IWL_ERR(priv,
804 "uCode file size %d does not match expected size\n",
805 (int)ucode_raw->size);
806 return -EINVAL;
807 }
808
809 pieces->inst = src;
810 src += pieces->inst_size;
811 pieces->data = src;
812 src += pieces->data_size;
813 pieces->init = src;
814 src += pieces->init_size;
815 pieces->init_data = src;
816 src += pieces->init_data_size;
817
818 return 0;
819 }
820
821 static int iwlagn_load_firmware(struct iwl_priv *priv,
822 const struct firmware *ucode_raw,
823 struct iwlagn_firmware_pieces *pieces,
824 struct iwlagn_ucode_capabilities *capa)
825 {
826 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
827 struct iwl_ucode_tlv *tlv;
828 size_t len = ucode_raw->size;
829 const u8 *data;
830 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
831 int tmp;
832 u64 alternatives;
833 u32 tlv_len;
834 enum iwl_ucode_tlv_type tlv_type;
835 const u8 *tlv_data;
836
837 if (len < sizeof(*ucode)) {
838 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
839 return -EINVAL;
840 }
841
842 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
843 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
844 le32_to_cpu(ucode->magic));
845 return -EINVAL;
846 }
847
848 /*
849 * Check which alternatives are present, and "downgrade"
850 * when the chosen alternative is not present, warning
851 * the user when that happens. Some files may not have
852 * any alternatives, so don't warn in that case.
853 */
854 alternatives = le64_to_cpu(ucode->alternatives);
855 tmp = wanted_alternative;
856 if (wanted_alternative > 63)
857 wanted_alternative = 63;
858 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
859 wanted_alternative--;
860 if (wanted_alternative && wanted_alternative != tmp)
861 IWL_WARN(priv,
862 "uCode alternative %d not available, choosing %d\n",
863 tmp, wanted_alternative);
864
865 priv->ucode_ver = le32_to_cpu(ucode->ver);
866 pieces->build = le32_to_cpu(ucode->build);
867 data = ucode->data;
868
869 len -= sizeof(*ucode);
870
871 while (len >= sizeof(*tlv)) {
872 u16 tlv_alt;
873
874 len -= sizeof(*tlv);
875 tlv = (void *)data;
876
877 tlv_len = le32_to_cpu(tlv->length);
878 tlv_type = le16_to_cpu(tlv->type);
879 tlv_alt = le16_to_cpu(tlv->alternative);
880 tlv_data = tlv->data;
881
882 if (len < tlv_len) {
883 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
884 len, tlv_len);
885 return -EINVAL;
886 }
887 len -= ALIGN(tlv_len, 4);
888 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
889
890 /*
891 * Alternative 0 is always valid.
892 *
893 * Skip alternative TLVs that are not selected.
894 */
895 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
896 continue;
897
898 switch (tlv_type) {
899 case IWL_UCODE_TLV_INST:
900 pieces->inst = tlv_data;
901 pieces->inst_size = tlv_len;
902 break;
903 case IWL_UCODE_TLV_DATA:
904 pieces->data = tlv_data;
905 pieces->data_size = tlv_len;
906 break;
907 case IWL_UCODE_TLV_INIT:
908 pieces->init = tlv_data;
909 pieces->init_size = tlv_len;
910 break;
911 case IWL_UCODE_TLV_INIT_DATA:
912 pieces->init_data = tlv_data;
913 pieces->init_data_size = tlv_len;
914 break;
915 case IWL_UCODE_TLV_BOOT:
916 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
917 break;
918 case IWL_UCODE_TLV_PROBE_MAX_LEN:
919 if (tlv_len != sizeof(u32))
920 goto invalid_tlv_len;
921 capa->max_probe_length =
922 le32_to_cpup((__le32 *)tlv_data);
923 break;
924 case IWL_UCODE_TLV_PAN:
925 if (tlv_len)
926 goto invalid_tlv_len;
927 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
928 break;
929 case IWL_UCODE_TLV_FLAGS:
930 /* must be at least one u32 */
931 if (tlv_len < sizeof(u32))
932 goto invalid_tlv_len;
933 /* and a proper number of u32s */
934 if (tlv_len % sizeof(u32))
935 goto invalid_tlv_len;
936 /*
937 * This driver only reads the first u32 as
938 * right now no more features are defined,
939 * if that changes then either the driver
940 * will not work with the new firmware, or
941 * it'll not take advantage of new features.
942 */
943 capa->flags = le32_to_cpup((__le32 *)tlv_data);
944 break;
945 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
946 if (tlv_len != sizeof(u32))
947 goto invalid_tlv_len;
948 pieces->init_evtlog_ptr =
949 le32_to_cpup((__le32 *)tlv_data);
950 break;
951 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
952 if (tlv_len != sizeof(u32))
953 goto invalid_tlv_len;
954 pieces->init_evtlog_size =
955 le32_to_cpup((__le32 *)tlv_data);
956 break;
957 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
958 if (tlv_len != sizeof(u32))
959 goto invalid_tlv_len;
960 pieces->init_errlog_ptr =
961 le32_to_cpup((__le32 *)tlv_data);
962 break;
963 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
964 if (tlv_len != sizeof(u32))
965 goto invalid_tlv_len;
966 pieces->inst_evtlog_ptr =
967 le32_to_cpup((__le32 *)tlv_data);
968 break;
969 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
970 if (tlv_len != sizeof(u32))
971 goto invalid_tlv_len;
972 pieces->inst_evtlog_size =
973 le32_to_cpup((__le32 *)tlv_data);
974 break;
975 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
976 if (tlv_len != sizeof(u32))
977 goto invalid_tlv_len;
978 pieces->inst_errlog_ptr =
979 le32_to_cpup((__le32 *)tlv_data);
980 break;
981 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
982 if (tlv_len)
983 goto invalid_tlv_len;
984 priv->enhance_sensitivity_table = true;
985 break;
986 case IWL_UCODE_TLV_WOWLAN_INST:
987 pieces->wowlan_inst = tlv_data;
988 pieces->wowlan_inst_size = tlv_len;
989 break;
990 case IWL_UCODE_TLV_WOWLAN_DATA:
991 pieces->wowlan_data = tlv_data;
992 pieces->wowlan_data_size = tlv_len;
993 break;
994 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
995 if (tlv_len != sizeof(u32))
996 goto invalid_tlv_len;
997 capa->standard_phy_calibration_size =
998 le32_to_cpup((__le32 *)tlv_data);
999 break;
1000 default:
1001 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1002 break;
1003 }
1004 }
1005
1006 if (len) {
1007 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1008 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1009 return -EINVAL;
1010 }
1011
1012 return 0;
1013
1014 invalid_tlv_len:
1015 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1016 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1017
1018 return -EINVAL;
1019 }
1020
1021 /**
1022 * iwl_ucode_callback - callback when firmware was loaded
1023 *
1024 * If loaded successfully, copies the firmware into buffers
1025 * for the card to fetch (via DMA).
1026 */
1027 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1028 {
1029 struct iwl_priv *priv = context;
1030 struct iwl_ucode_header *ucode;
1031 int err;
1032 struct iwlagn_firmware_pieces pieces;
1033 const unsigned int api_max = priv->cfg->ucode_api_max;
1034 unsigned int api_ok = priv->cfg->ucode_api_ok;
1035 const unsigned int api_min = priv->cfg->ucode_api_min;
1036 u32 api_ver;
1037 char buildstr[25];
1038 u32 build;
1039 struct iwlagn_ucode_capabilities ucode_capa = {
1040 .max_probe_length = 200,
1041 .standard_phy_calibration_size =
1042 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1043 };
1044
1045 if (!api_ok)
1046 api_ok = api_max;
1047
1048 memset(&pieces, 0, sizeof(pieces));
1049
1050 if (!ucode_raw) {
1051 if (priv->fw_index <= api_ok)
1052 IWL_ERR(priv,
1053 "request for firmware file '%s' failed.\n",
1054 priv->firmware_name);
1055 goto try_again;
1056 }
1057
1058 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1059 priv->firmware_name, ucode_raw->size);
1060
1061 /* Make sure that we got at least the API version number */
1062 if (ucode_raw->size < 4) {
1063 IWL_ERR(priv, "File size way too small!\n");
1064 goto try_again;
1065 }
1066
1067 /* Data from ucode file: header followed by uCode images */
1068 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1069
1070 if (ucode->ver)
1071 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1072 else
1073 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1074 &ucode_capa);
1075
1076 if (err)
1077 goto try_again;
1078
1079 api_ver = IWL_UCODE_API(priv->ucode_ver);
1080 build = pieces.build;
1081
1082 /*
1083 * api_ver should match the api version forming part of the
1084 * firmware filename ... but we don't check for that and only rely
1085 * on the API version read from firmware header from here on forward
1086 */
1087 /* no api version check required for experimental uCode */
1088 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1089 if (api_ver < api_min || api_ver > api_max) {
1090 IWL_ERR(priv,
1091 "Driver unable to support your firmware API. "
1092 "Driver supports v%u, firmware is v%u.\n",
1093 api_max, api_ver);
1094 goto try_again;
1095 }
1096
1097 if (api_ver < api_ok) {
1098 if (api_ok != api_max)
1099 IWL_ERR(priv, "Firmware has old API version, "
1100 "expected v%u through v%u, got v%u.\n",
1101 api_ok, api_max, api_ver);
1102 else
1103 IWL_ERR(priv, "Firmware has old API version, "
1104 "expected v%u, got v%u.\n",
1105 api_max, api_ver);
1106 IWL_ERR(priv, "New firmware can be obtained from "
1107 "http://www.intellinuxwireless.org/.\n");
1108 }
1109 }
1110
1111 if (build)
1112 sprintf(buildstr, " build %u%s", build,
1113 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1114 ? " (EXP)" : "");
1115 else
1116 buildstr[0] = '\0';
1117
1118 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1119 IWL_UCODE_MAJOR(priv->ucode_ver),
1120 IWL_UCODE_MINOR(priv->ucode_ver),
1121 IWL_UCODE_API(priv->ucode_ver),
1122 IWL_UCODE_SERIAL(priv->ucode_ver),
1123 buildstr);
1124
1125 snprintf(priv->hw->wiphy->fw_version,
1126 sizeof(priv->hw->wiphy->fw_version),
1127 "%u.%u.%u.%u%s",
1128 IWL_UCODE_MAJOR(priv->ucode_ver),
1129 IWL_UCODE_MINOR(priv->ucode_ver),
1130 IWL_UCODE_API(priv->ucode_ver),
1131 IWL_UCODE_SERIAL(priv->ucode_ver),
1132 buildstr);
1133
1134 /*
1135 * For any of the failures below (before allocating pci memory)
1136 * we will try to load a version with a smaller API -- maybe the
1137 * user just got a corrupted version of the latest API.
1138 */
1139
1140 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1141 priv->ucode_ver);
1142 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1143 pieces.inst_size);
1144 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1145 pieces.data_size);
1146 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1147 pieces.init_size);
1148 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1149 pieces.init_data_size);
1150
1151 /* Verify that uCode images will fit in card's SRAM */
1152 if (pieces.inst_size > hw_params(priv).max_inst_size) {
1153 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1154 pieces.inst_size);
1155 goto try_again;
1156 }
1157
1158 if (pieces.data_size > hw_params(priv).max_data_size) {
1159 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1160 pieces.data_size);
1161 goto try_again;
1162 }
1163
1164 if (pieces.init_size > hw_params(priv).max_inst_size) {
1165 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1166 pieces.init_size);
1167 goto try_again;
1168 }
1169
1170 if (pieces.init_data_size > hw_params(priv).max_data_size) {
1171 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1172 pieces.init_data_size);
1173 goto try_again;
1174 }
1175
1176 /* Allocate ucode buffers for card's bus-master loading ... */
1177
1178 /* Runtime instructions and 2 copies of data:
1179 * 1) unmodified from disk
1180 * 2) backup cache for save/restore during power-downs */
1181 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1182 pieces.inst, pieces.inst_size))
1183 goto err_pci_alloc;
1184 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1185 pieces.data, pieces.data_size))
1186 goto err_pci_alloc;
1187
1188 /* Initialization instructions and data */
1189 if (pieces.init_size && pieces.init_data_size) {
1190 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1191 pieces.init, pieces.init_size))
1192 goto err_pci_alloc;
1193 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1194 pieces.init_data, pieces.init_data_size))
1195 goto err_pci_alloc;
1196 }
1197
1198 /* WoWLAN instructions and data */
1199 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1200 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1201 pieces.wowlan_inst,
1202 pieces.wowlan_inst_size))
1203 goto err_pci_alloc;
1204 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1205 pieces.wowlan_data,
1206 pieces.wowlan_data_size))
1207 goto err_pci_alloc;
1208 }
1209
1210 /* Now that we can no longer fail, copy information */
1211
1212 /*
1213 * The (size - 16) / 12 formula is based on the information recorded
1214 * for each event, which is of mode 1 (including timestamp) for all
1215 * new microcodes that include this information.
1216 */
1217 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1218 if (pieces.init_evtlog_size)
1219 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1220 else
1221 priv->init_evtlog_size =
1222 priv->cfg->base_params->max_event_log_size;
1223 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1224 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1225 if (pieces.inst_evtlog_size)
1226 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1227 else
1228 priv->inst_evtlog_size =
1229 priv->cfg->base_params->max_event_log_size;
1230 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1231
1232 priv->new_scan_threshold_behaviour =
1233 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1234
1235 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1236 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1237
1238 /*
1239 * if not PAN, then don't support P2P -- might be a uCode
1240 * packaging bug or due to the eeprom check above
1241 */
1242 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1243 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1244
1245 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1246 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1247 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1248 } else {
1249 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1250 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1251 }
1252
1253 /*
1254 * figure out the offset of chain noise reset and gain commands
1255 * base on the size of standard phy calibration commands table size
1256 */
1257 if (ucode_capa.standard_phy_calibration_size >
1258 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1259 ucode_capa.standard_phy_calibration_size =
1260 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1261
1262 priv->phy_calib_chain_noise_reset_cmd =
1263 ucode_capa.standard_phy_calibration_size;
1264 priv->phy_calib_chain_noise_gain_cmd =
1265 ucode_capa.standard_phy_calibration_size + 1;
1266
1267 /* initialize all valid contexts */
1268 iwl_init_context(priv, ucode_capa.flags);
1269
1270 /**************************************************
1271 * This is still part of probe() in a sense...
1272 *
1273 * 9. Setup and register with mac80211 and debugfs
1274 **************************************************/
1275 err = iwl_mac_setup_register(priv, &ucode_capa);
1276 if (err)
1277 goto out_unbind;
1278
1279 err = iwl_dbgfs_register(priv, DRV_NAME);
1280 if (err)
1281 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1282
1283 err = sysfs_create_group(&(priv->bus->dev->kobj),
1284 &iwl_attribute_group);
1285 if (err) {
1286 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1287 goto out_unbind;
1288 }
1289
1290 /* We have our copies now, allow OS release its copies */
1291 release_firmware(ucode_raw);
1292 complete(&priv->firmware_loading_complete);
1293 return;
1294
1295 try_again:
1296 /* try next, if any */
1297 if (iwl_request_firmware(priv, false))
1298 goto out_unbind;
1299 release_firmware(ucode_raw);
1300 return;
1301
1302 err_pci_alloc:
1303 IWL_ERR(priv, "failed to allocate pci memory\n");
1304 iwl_dealloc_ucode(priv);
1305 out_unbind:
1306 complete(&priv->firmware_loading_complete);
1307 device_release_driver(priv->bus->dev);
1308 release_firmware(ucode_raw);
1309 }
1310
1311 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1312 {
1313 struct iwl_ct_kill_config cmd;
1314 struct iwl_ct_kill_throttling_config adv_cmd;
1315 unsigned long flags;
1316 int ret = 0;
1317
1318 spin_lock_irqsave(&priv->shrd->lock, flags);
1319 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1320 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1321 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1322 priv->thermal_throttle.ct_kill_toggle = false;
1323
1324 if (priv->cfg->base_params->support_ct_kill_exit) {
1325 adv_cmd.critical_temperature_enter =
1326 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1327 adv_cmd.critical_temperature_exit =
1328 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1329
1330 ret = iwl_trans_send_cmd_pdu(trans(priv),
1331 REPLY_CT_KILL_CONFIG_CMD,
1332 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1333 if (ret)
1334 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1335 else
1336 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1337 "succeeded, critical temperature enter is %d,"
1338 "exit is %d\n",
1339 hw_params(priv).ct_kill_threshold,
1340 hw_params(priv).ct_kill_exit_threshold);
1341 } else {
1342 cmd.critical_temperature_R =
1343 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1344
1345 ret = iwl_trans_send_cmd_pdu(trans(priv),
1346 REPLY_CT_KILL_CONFIG_CMD,
1347 CMD_SYNC, sizeof(cmd), &cmd);
1348 if (ret)
1349 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1350 else
1351 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1352 "succeeded, "
1353 "critical temperature is %d\n",
1354 hw_params(priv).ct_kill_threshold);
1355 }
1356 }
1357
1358 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1359 {
1360 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1361 struct iwl_host_cmd cmd = {
1362 .id = CALIBRATION_CFG_CMD,
1363 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1364 .data = { &calib_cfg_cmd, },
1365 };
1366
1367 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1368 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1369 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1370
1371 return iwl_trans_send_cmd(trans(priv), &cmd);
1372 }
1373
1374
1375 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1376 {
1377 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1378 .valid = cpu_to_le32(valid_tx_ant),
1379 };
1380
1381 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1382 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1383 return iwl_trans_send_cmd_pdu(trans(priv),
1384 TX_ANT_CONFIGURATION_CMD,
1385 CMD_SYNC,
1386 sizeof(struct iwl_tx_ant_config_cmd),
1387 &tx_ant_cmd);
1388 } else {
1389 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1390 return -EOPNOTSUPP;
1391 }
1392 }
1393
1394 /**
1395 * iwl_alive_start - called after REPLY_ALIVE notification received
1396 * from protocol/runtime uCode (initialization uCode's
1397 * Alive gets handled by iwl_init_alive_start()).
1398 */
1399 int iwl_alive_start(struct iwl_priv *priv)
1400 {
1401 int ret = 0;
1402 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1403
1404 /*TODO: this should go to the transport layer */
1405 iwl_reset_ict(priv);
1406
1407 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1408
1409 /* After the ALIVE response, we can send host commands to the uCode */
1410 set_bit(STATUS_ALIVE, &priv->shrd->status);
1411
1412 /* Enable watchdog to monitor the driver tx queues */
1413 iwl_setup_watchdog(priv);
1414
1415 if (iwl_is_rfkill(priv))
1416 return -ERFKILL;
1417
1418 /* download priority table before any calibration request */
1419 if (priv->cfg->bt_params &&
1420 priv->cfg->bt_params->advanced_bt_coexist) {
1421 /* Configure Bluetooth device coexistence support */
1422 if (priv->cfg->bt_params->bt_sco_disable)
1423 priv->bt_enable_pspoll = false;
1424 else
1425 priv->bt_enable_pspoll = true;
1426
1427 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1428 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1429 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1430 iwlagn_send_advance_bt_config(priv);
1431 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1432 priv->cur_rssi_ctx = NULL;
1433
1434 iwlagn_send_prio_tbl(priv);
1435
1436 /* FIXME: w/a to force change uCode BT state machine */
1437 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1438 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1439 if (ret)
1440 return ret;
1441 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1442 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1443 if (ret)
1444 return ret;
1445 } else {
1446 /*
1447 * default is 2-wire BT coexexistence support
1448 */
1449 iwl_send_bt_config(priv);
1450 }
1451
1452 if (hw_params(priv).calib_rt_cfg)
1453 iwlagn_send_calib_cfg_rt(priv,
1454 hw_params(priv).calib_rt_cfg);
1455
1456 ieee80211_wake_queues(priv->hw);
1457
1458 priv->active_rate = IWL_RATES_MASK;
1459
1460 /* Configure Tx antenna selection based on H/W config */
1461 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1462
1463 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1464 struct iwl_rxon_cmd *active_rxon =
1465 (struct iwl_rxon_cmd *)&ctx->active;
1466 /* apply any changes in staging */
1467 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1468 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1469 } else {
1470 struct iwl_rxon_context *tmp;
1471 /* Initialize our rx_config data */
1472 for_each_context(priv, tmp)
1473 iwl_connection_init_rx_config(priv, tmp);
1474
1475 iwlagn_set_rxon_chain(priv, ctx);
1476 }
1477
1478 if (!priv->shrd->wowlan) {
1479 /* WoWLAN ucode will not reply in the same way, skip it */
1480 iwl_reset_run_time_calib(priv);
1481 }
1482
1483 set_bit(STATUS_READY, &priv->shrd->status);
1484
1485 /* Configure the adapter for unassociated operation */
1486 ret = iwlagn_commit_rxon(priv, ctx);
1487 if (ret)
1488 return ret;
1489
1490 /* At this point, the NIC is initialized and operational */
1491 iwl_rf_kill_ct_config(priv);
1492
1493 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1494
1495 return iwl_power_update_mode(priv, true);
1496 }
1497
1498 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1499
1500 static void __iwl_down(struct iwl_priv *priv)
1501 {
1502 int exit_pending;
1503
1504 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1505
1506 iwl_scan_cancel_timeout(priv, 200);
1507
1508 /*
1509 * If active, scanning won't cancel it, so say it expired.
1510 * No race since we hold the mutex here and a new one
1511 * can't come in at this time.
1512 */
1513 ieee80211_remain_on_channel_expired(priv->hw);
1514
1515 exit_pending =
1516 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1517
1518 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1519 * to prevent rearm timer */
1520 del_timer_sync(&priv->watchdog);
1521
1522 iwl_clear_ucode_stations(priv, NULL);
1523 iwl_dealloc_bcast_stations(priv);
1524 iwl_clear_driver_stations(priv);
1525
1526 /* reset BT coex data */
1527 priv->bt_status = 0;
1528 priv->cur_rssi_ctx = NULL;
1529 priv->bt_is_sco = 0;
1530 if (priv->cfg->bt_params)
1531 priv->bt_traffic_load =
1532 priv->cfg->bt_params->bt_init_traffic_load;
1533 else
1534 priv->bt_traffic_load = 0;
1535 priv->bt_full_concurrent = false;
1536 priv->bt_ci_compliance = 0;
1537
1538 /* Wipe out the EXIT_PENDING status bit if we are not actually
1539 * exiting the module */
1540 if (!exit_pending)
1541 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1542
1543 if (priv->mac80211_registered)
1544 ieee80211_stop_queues(priv->hw);
1545
1546 /* Clear out all status bits but a few that are stable across reset */
1547 priv->shrd->status &=
1548 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1549 STATUS_RF_KILL_HW |
1550 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1551 STATUS_GEO_CONFIGURED |
1552 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1553 STATUS_FW_ERROR |
1554 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1555 STATUS_EXIT_PENDING;
1556
1557 iwl_trans_stop_device(trans(priv));
1558
1559 dev_kfree_skb(priv->beacon_skb);
1560 priv->beacon_skb = NULL;
1561 }
1562
1563 static void iwl_down(struct iwl_priv *priv)
1564 {
1565 mutex_lock(&priv->shrd->mutex);
1566 __iwl_down(priv);
1567 mutex_unlock(&priv->shrd->mutex);
1568
1569 iwl_cancel_deferred_work(priv);
1570 }
1571
1572 #define MAX_HW_RESTARTS 5
1573
1574 static int __iwl_up(struct iwl_priv *priv)
1575 {
1576 struct iwl_rxon_context *ctx;
1577 int ret;
1578
1579 lockdep_assert_held(&priv->shrd->mutex);
1580
1581 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1582 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1583 return -EIO;
1584 }
1585
1586 for_each_context(priv, ctx) {
1587 ret = iwlagn_alloc_bcast_station(priv, ctx);
1588 if (ret) {
1589 iwl_dealloc_bcast_stations(priv);
1590 return ret;
1591 }
1592 }
1593
1594 ret = iwlagn_run_init_ucode(priv);
1595 if (ret) {
1596 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1597 goto error;
1598 }
1599
1600 ret = iwlagn_load_ucode_wait_alive(priv,
1601 &priv->ucode_rt,
1602 IWL_UCODE_REGULAR);
1603 if (ret) {
1604 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1605 goto error;
1606 }
1607
1608 ret = iwl_alive_start(priv);
1609 if (ret)
1610 goto error;
1611 return 0;
1612
1613 error:
1614 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1615 __iwl_down(priv);
1616 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1617
1618 IWL_ERR(priv, "Unable to initialize device.\n");
1619 return ret;
1620 }
1621
1622
1623 /*****************************************************************************
1624 *
1625 * Workqueue callbacks
1626 *
1627 *****************************************************************************/
1628
1629 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1630 {
1631 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1632 run_time_calib_work);
1633
1634 mutex_lock(&priv->shrd->mutex);
1635
1636 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1637 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1638 mutex_unlock(&priv->shrd->mutex);
1639 return;
1640 }
1641
1642 if (priv->start_calib) {
1643 iwl_chain_noise_calibration(priv);
1644 iwl_sensitivity_calibration(priv);
1645 }
1646
1647 mutex_unlock(&priv->shrd->mutex);
1648 }
1649
1650 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1651 {
1652 struct iwl_rxon_context *ctx;
1653 bool bt_full_concurrent;
1654 u8 bt_ci_compliance;
1655 u8 bt_load;
1656 u8 bt_status;
1657 bool bt_is_sco;
1658
1659 lockdep_assert_held(&priv->shrd->mutex);
1660
1661 for_each_context(priv, ctx)
1662 ctx->vif = NULL;
1663 priv->is_open = 0;
1664
1665 /*
1666 * __iwl_down() will clear the BT status variables,
1667 * which is correct, but when we restart we really
1668 * want to keep them so restore them afterwards.
1669 *
1670 * The restart process will later pick them up and
1671 * re-configure the hw when we reconfigure the BT
1672 * command.
1673 */
1674 bt_full_concurrent = priv->bt_full_concurrent;
1675 bt_ci_compliance = priv->bt_ci_compliance;
1676 bt_load = priv->bt_traffic_load;
1677 bt_status = priv->bt_status;
1678 bt_is_sco = priv->bt_is_sco;
1679
1680 __iwl_down(priv);
1681
1682 priv->bt_full_concurrent = bt_full_concurrent;
1683 priv->bt_ci_compliance = bt_ci_compliance;
1684 priv->bt_traffic_load = bt_load;
1685 priv->bt_status = bt_status;
1686 priv->bt_is_sco = bt_is_sco;
1687 }
1688
1689 static void iwl_bg_restart(struct work_struct *data)
1690 {
1691 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1692
1693 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1694 return;
1695
1696 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1697 mutex_lock(&priv->shrd->mutex);
1698 iwlagn_prepare_restart(priv);
1699 mutex_unlock(&priv->shrd->mutex);
1700 iwl_cancel_deferred_work(priv);
1701 ieee80211_restart_hw(priv->hw);
1702 } else {
1703 WARN_ON(1);
1704 }
1705 }
1706
1707 /*****************************************************************************
1708 *
1709 * mac80211 entry point functions
1710 *
1711 *****************************************************************************/
1712
1713 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1714 {
1715 .max = 1,
1716 .types = BIT(NL80211_IFTYPE_STATION),
1717 },
1718 {
1719 .max = 1,
1720 .types = BIT(NL80211_IFTYPE_AP),
1721 },
1722 };
1723
1724 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1725 {
1726 .max = 2,
1727 .types = BIT(NL80211_IFTYPE_STATION),
1728 },
1729 };
1730
1731 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1732 {
1733 .max = 1,
1734 .types = BIT(NL80211_IFTYPE_STATION),
1735 },
1736 {
1737 .max = 1,
1738 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1739 BIT(NL80211_IFTYPE_AP),
1740 },
1741 };
1742
1743 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1744 {
1745 .max = 2,
1746 .types = BIT(NL80211_IFTYPE_STATION),
1747 },
1748 {
1749 .max = 1,
1750 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1751 },
1752 };
1753
1754 static const struct ieee80211_iface_combination
1755 iwlagn_iface_combinations_dualmode[] = {
1756 { .num_different_channels = 1,
1757 .max_interfaces = 2,
1758 .beacon_int_infra_match = true,
1759 .limits = iwlagn_sta_ap_limits,
1760 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1761 },
1762 { .num_different_channels = 1,
1763 .max_interfaces = 2,
1764 .limits = iwlagn_2sta_limits,
1765 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1766 },
1767 };
1768
1769 static const struct ieee80211_iface_combination
1770 iwlagn_iface_combinations_p2p[] = {
1771 { .num_different_channels = 1,
1772 .max_interfaces = 2,
1773 .beacon_int_infra_match = true,
1774 .limits = iwlagn_p2p_sta_go_limits,
1775 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1776 },
1777 { .num_different_channels = 1,
1778 .max_interfaces = 2,
1779 .limits = iwlagn_p2p_2sta_limits,
1780 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1781 },
1782 };
1783
1784 /*
1785 * Not a mac80211 entry point function, but it fits in with all the
1786 * other mac80211 functions grouped here.
1787 */
1788 static int iwl_mac_setup_register(struct iwl_priv *priv,
1789 struct iwlagn_ucode_capabilities *capa)
1790 {
1791 int ret;
1792 struct ieee80211_hw *hw = priv->hw;
1793 struct iwl_rxon_context *ctx;
1794
1795 hw->rate_control_algorithm = "iwl-agn-rs";
1796
1797 /* Tell mac80211 our characteristics */
1798 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1799 IEEE80211_HW_AMPDU_AGGREGATION |
1800 IEEE80211_HW_NEED_DTIM_PERIOD |
1801 IEEE80211_HW_SPECTRUM_MGMT |
1802 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1803
1804 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1805
1806 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1807 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1808
1809 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1810 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1811 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1812
1813 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1814 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1815
1816 hw->sta_data_size = sizeof(struct iwl_station_priv);
1817 hw->vif_data_size = sizeof(struct iwl_vif_priv);
1818
1819 for_each_context(priv, ctx) {
1820 hw->wiphy->interface_modes |= ctx->interface_modes;
1821 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1822 }
1823
1824 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1825
1826 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1827 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1828 hw->wiphy->n_iface_combinations =
1829 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1830 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1831 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1832 hw->wiphy->n_iface_combinations =
1833 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1834 }
1835
1836 hw->wiphy->max_remain_on_channel_duration = 1000;
1837
1838 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1839 WIPHY_FLAG_DISABLE_BEACON_HINTS |
1840 WIPHY_FLAG_IBSS_RSN;
1841
1842 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
1843 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1844 WIPHY_WOWLAN_DISCONNECT |
1845 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1846 WIPHY_WOWLAN_RFKILL_RELEASE;
1847 if (!iwlagn_mod_params.sw_crypto)
1848 hw->wiphy->wowlan.flags |=
1849 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1850 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1851
1852 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1853 hw->wiphy->wowlan.pattern_min_len =
1854 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1855 hw->wiphy->wowlan.pattern_max_len =
1856 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1857 }
1858
1859 if (iwlagn_mod_params.power_save)
1860 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1861 else
1862 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1863
1864 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1865 /* we create the 802.11 header and a zero-length SSID element */
1866 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1867
1868 /* Default value; 4 EDCA QOS priorities */
1869 hw->queues = 4;
1870
1871 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1872
1873 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1874 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1875 &priv->bands[IEEE80211_BAND_2GHZ];
1876 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1877 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1878 &priv->bands[IEEE80211_BAND_5GHZ];
1879
1880 iwl_leds_init(priv);
1881
1882 ret = ieee80211_register_hw(priv->hw);
1883 if (ret) {
1884 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1885 return ret;
1886 }
1887 priv->mac80211_registered = 1;
1888
1889 return 0;
1890 }
1891
1892
1893 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1894 {
1895 struct iwl_priv *priv = hw->priv;
1896 int ret;
1897
1898 IWL_DEBUG_MAC80211(priv, "enter\n");
1899
1900 /* we should be verifying the device is ready to be opened */
1901 mutex_lock(&priv->shrd->mutex);
1902 ret = __iwl_up(priv);
1903 mutex_unlock(&priv->shrd->mutex);
1904 if (ret)
1905 return ret;
1906
1907 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1908
1909 /* Now we should be done, and the READY bit should be set. */
1910 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1911 ret = -EIO;
1912
1913 iwlagn_led_enable(priv);
1914
1915 priv->is_open = 1;
1916 IWL_DEBUG_MAC80211(priv, "leave\n");
1917 return 0;
1918 }
1919
1920 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1921 {
1922 struct iwl_priv *priv = hw->priv;
1923
1924 IWL_DEBUG_MAC80211(priv, "enter\n");
1925
1926 if (!priv->is_open)
1927 return;
1928
1929 priv->is_open = 0;
1930
1931 iwl_down(priv);
1932
1933 flush_workqueue(priv->shrd->workqueue);
1934
1935 /* User space software may expect getting rfkill changes
1936 * even if interface is down */
1937 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1938 iwl_enable_rfkill_int(priv);
1939
1940 IWL_DEBUG_MAC80211(priv, "leave\n");
1941 }
1942
1943 #ifdef CONFIG_PM
1944 static int iwlagn_send_patterns(struct iwl_priv *priv,
1945 struct cfg80211_wowlan *wowlan)
1946 {
1947 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1948 struct iwl_host_cmd cmd = {
1949 .id = REPLY_WOWLAN_PATTERNS,
1950 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1951 .flags = CMD_SYNC,
1952 };
1953 int i, err;
1954
1955 if (!wowlan->n_patterns)
1956 return 0;
1957
1958 cmd.len[0] = sizeof(*pattern_cmd) +
1959 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1960
1961 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1962 if (!pattern_cmd)
1963 return -ENOMEM;
1964
1965 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1966
1967 for (i = 0; i < wowlan->n_patterns; i++) {
1968 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1969
1970 memcpy(&pattern_cmd->patterns[i].mask,
1971 wowlan->patterns[i].mask, mask_len);
1972 memcpy(&pattern_cmd->patterns[i].pattern,
1973 wowlan->patterns[i].pattern,
1974 wowlan->patterns[i].pattern_len);
1975 pattern_cmd->patterns[i].mask_size = mask_len;
1976 pattern_cmd->patterns[i].pattern_size =
1977 wowlan->patterns[i].pattern_len;
1978 }
1979
1980 cmd.data[0] = pattern_cmd;
1981 err = iwl_trans_send_cmd(trans(priv), &cmd);
1982 kfree(pattern_cmd);
1983 return err;
1984 }
1985 #endif
1986
1987 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1988 struct ieee80211_vif *vif,
1989 struct cfg80211_gtk_rekey_data *data)
1990 {
1991 struct iwl_priv *priv = hw->priv;
1992
1993 if (iwlagn_mod_params.sw_crypto)
1994 return;
1995
1996 mutex_lock(&priv->shrd->mutex);
1997
1998 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1999 goto out;
2000
2001 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2002 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2003 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2004 priv->have_rekey_data = true;
2005
2006 out:
2007 mutex_unlock(&priv->shrd->mutex);
2008 }
2009
2010 struct wowlan_key_data {
2011 struct iwl_rxon_context *ctx;
2012 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2013 struct iwlagn_wowlan_tkip_params_cmd *tkip;
2014 const u8 *bssid;
2015 bool error, use_rsc_tsc, use_tkip;
2016 };
2017
2018 #ifdef CONFIG_PM
2019 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2020 {
2021 int i;
2022
2023 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2024 out[i] = cpu_to_le16(p1k[i]);
2025 }
2026
2027 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2028 struct ieee80211_vif *vif,
2029 struct ieee80211_sta *sta,
2030 struct ieee80211_key_conf *key,
2031 void *_data)
2032 {
2033 struct iwl_priv *priv = hw->priv;
2034 struct wowlan_key_data *data = _data;
2035 struct iwl_rxon_context *ctx = data->ctx;
2036 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2037 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2038 struct iwlagn_p1k_cache *rx_p1ks;
2039 u8 *rx_mic_key;
2040 struct ieee80211_key_seq seq;
2041 u32 cur_rx_iv32 = 0;
2042 u16 p1k[IWLAGN_P1K_SIZE];
2043 int ret, i;
2044
2045 mutex_lock(&priv->shrd->mutex);
2046
2047 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2048 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2049 !sta && !ctx->key_mapping_keys)
2050 ret = iwl_set_default_wep_key(priv, ctx, key);
2051 else
2052 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2053
2054 if (ret) {
2055 IWL_ERR(priv, "Error setting key during suspend!\n");
2056 data->error = true;
2057 }
2058
2059 switch (key->cipher) {
2060 case WLAN_CIPHER_SUITE_TKIP:
2061 if (sta) {
2062 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2063 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2064
2065 rx_p1ks = data->tkip->rx_uni;
2066
2067 ieee80211_get_key_tx_seq(key, &seq);
2068 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2069 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2070
2071 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2072 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2073
2074 memcpy(data->tkip->mic_keys.tx,
2075 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2076 IWLAGN_MIC_KEY_SIZE);
2077
2078 rx_mic_key = data->tkip->mic_keys.rx_unicast;
2079 } else {
2080 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2081 rx_p1ks = data->tkip->rx_multi;
2082 rx_mic_key = data->tkip->mic_keys.rx_mcast;
2083 }
2084
2085 /*
2086 * For non-QoS this relies on the fact that both the uCode and
2087 * mac80211 use TID 0 (as they need to to avoid replay attacks)
2088 * for checking the IV in the frames.
2089 */
2090 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2091 ieee80211_get_key_rx_seq(key, i, &seq);
2092 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2093 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2094 /* wrapping isn't allowed, AP must rekey */
2095 if (seq.tkip.iv32 > cur_rx_iv32)
2096 cur_rx_iv32 = seq.tkip.iv32;
2097 }
2098
2099 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2100 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2101 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2102 cur_rx_iv32 + 1, p1k);
2103 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2104
2105 memcpy(rx_mic_key,
2106 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2107 IWLAGN_MIC_KEY_SIZE);
2108
2109 data->use_tkip = true;
2110 data->use_rsc_tsc = true;
2111 break;
2112 case WLAN_CIPHER_SUITE_CCMP:
2113 if (sta) {
2114 u8 *pn = seq.ccmp.pn;
2115
2116 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2117 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2118
2119 ieee80211_get_key_tx_seq(key, &seq);
2120 aes_tx_sc->pn = cpu_to_le64(
2121 (u64)pn[5] |
2122 ((u64)pn[4] << 8) |
2123 ((u64)pn[3] << 16) |
2124 ((u64)pn[2] << 24) |
2125 ((u64)pn[1] << 32) |
2126 ((u64)pn[0] << 40));
2127 } else
2128 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2129
2130 /*
2131 * For non-QoS this relies on the fact that both the uCode and
2132 * mac80211 use TID 0 for checking the IV in the frames.
2133 */
2134 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2135 u8 *pn = seq.ccmp.pn;
2136
2137 ieee80211_get_key_rx_seq(key, i, &seq);
2138 aes_sc->pn = cpu_to_le64(
2139 (u64)pn[5] |
2140 ((u64)pn[4] << 8) |
2141 ((u64)pn[3] << 16) |
2142 ((u64)pn[2] << 24) |
2143 ((u64)pn[1] << 32) |
2144 ((u64)pn[0] << 40));
2145 }
2146 data->use_rsc_tsc = true;
2147 break;
2148 }
2149
2150 mutex_unlock(&priv->shrd->mutex);
2151 }
2152
2153 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2154 struct cfg80211_wowlan *wowlan)
2155 {
2156 struct iwl_priv *priv = hw->priv;
2157 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2158 struct iwl_rxon_cmd rxon;
2159 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2160 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2161 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2162 struct wowlan_key_data key_data = {
2163 .ctx = ctx,
2164 .bssid = ctx->active.bssid_addr,
2165 .use_rsc_tsc = false,
2166 .tkip = &tkip_cmd,
2167 .use_tkip = false,
2168 };
2169 int ret, i;
2170 u16 seq;
2171
2172 if (WARN_ON(!wowlan))
2173 return -EINVAL;
2174
2175 mutex_lock(&priv->shrd->mutex);
2176
2177 /* Don't attempt WoWLAN when not associated, tear down instead. */
2178 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2179 !iwl_is_associated_ctx(ctx)) {
2180 ret = 1;
2181 goto out;
2182 }
2183
2184 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2185 if (!key_data.rsc_tsc) {
2186 ret = -ENOMEM;
2187 goto out;
2188 }
2189
2190 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2191
2192 /*
2193 * We know the last used seqno, and the uCode expects to know that
2194 * one, it will increment before TX.
2195 */
2196 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2197 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2198
2199 /*
2200 * For QoS counters, we store the one to use next, so subtract 0x10
2201 * since the uCode will add 0x10 before using the value.
2202 */
2203 for (i = 0; i < 8; i++) {
2204 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2205 seq -= 0x10;
2206 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2207 }
2208
2209 if (wowlan->disconnect)
2210 wakeup_filter_cmd.enabled |=
2211 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2212 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2213 if (wowlan->magic_pkt)
2214 wakeup_filter_cmd.enabled |=
2215 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2216 if (wowlan->gtk_rekey_failure)
2217 wakeup_filter_cmd.enabled |=
2218 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2219 if (wowlan->eap_identity_req)
2220 wakeup_filter_cmd.enabled |=
2221 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2222 if (wowlan->four_way_handshake)
2223 wakeup_filter_cmd.enabled |=
2224 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2225 if (wowlan->rfkill_release)
2226 wakeup_filter_cmd.enabled |=
2227 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2228 if (wowlan->n_patterns)
2229 wakeup_filter_cmd.enabled |=
2230 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2231
2232 iwl_scan_cancel_timeout(priv, 200);
2233
2234 memcpy(&rxon, &ctx->active, sizeof(rxon));
2235
2236 iwl_trans_stop_device(trans(priv));
2237
2238 priv->shrd->wowlan = true;
2239
2240 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2241 IWL_UCODE_WOWLAN);
2242 if (ret)
2243 goto error;
2244
2245 /* now configure WoWLAN ucode */
2246 ret = iwl_alive_start(priv);
2247 if (ret)
2248 goto error;
2249
2250 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2251 ret = iwlagn_commit_rxon(priv, ctx);
2252 if (ret)
2253 goto error;
2254
2255 ret = iwl_power_update_mode(priv, true);
2256 if (ret)
2257 goto error;
2258
2259 if (!iwlagn_mod_params.sw_crypto) {
2260 /* mark all keys clear */
2261 priv->ucode_key_table = 0;
2262 ctx->key_mapping_keys = 0;
2263
2264 /*
2265 * This needs to be unlocked due to lock ordering
2266 * constraints. Since we're in the suspend path
2267 * that isn't really a problem though.
2268 */
2269 mutex_unlock(&priv->shrd->mutex);
2270 ieee80211_iter_keys(priv->hw, ctx->vif,
2271 iwlagn_wowlan_program_keys,
2272 &key_data);
2273 mutex_lock(&priv->shrd->mutex);
2274 if (key_data.error) {
2275 ret = -EIO;
2276 goto error;
2277 }
2278
2279 if (key_data.use_rsc_tsc) {
2280 struct iwl_host_cmd rsc_tsc_cmd = {
2281 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2282 .flags = CMD_SYNC,
2283 .data[0] = key_data.rsc_tsc,
2284 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2285 .len[0] = sizeof(*key_data.rsc_tsc),
2286 };
2287
2288 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2289 if (ret)
2290 goto error;
2291 }
2292
2293 if (key_data.use_tkip) {
2294 ret = iwl_trans_send_cmd_pdu(trans(priv),
2295 REPLY_WOWLAN_TKIP_PARAMS,
2296 CMD_SYNC, sizeof(tkip_cmd),
2297 &tkip_cmd);
2298 if (ret)
2299 goto error;
2300 }
2301
2302 if (priv->have_rekey_data) {
2303 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2304 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2305 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2306 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2307 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2308 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2309
2310 ret = iwl_trans_send_cmd_pdu(trans(priv),
2311 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2312 CMD_SYNC, sizeof(kek_kck_cmd),
2313 &kek_kck_cmd);
2314 if (ret)
2315 goto error;
2316 }
2317 }
2318
2319 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2320 CMD_SYNC, sizeof(wakeup_filter_cmd),
2321 &wakeup_filter_cmd);
2322 if (ret)
2323 goto error;
2324
2325 ret = iwlagn_send_patterns(priv, wowlan);
2326 if (ret)
2327 goto error;
2328
2329 device_set_wakeup_enable(priv->bus->dev, true);
2330
2331 /* Now let the ucode operate on its own */
2332 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2333 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2334
2335 goto out;
2336
2337 error:
2338 priv->shrd->wowlan = false;
2339 iwlagn_prepare_restart(priv);
2340 ieee80211_restart_hw(priv->hw);
2341 out:
2342 mutex_unlock(&priv->shrd->mutex);
2343 kfree(key_data.rsc_tsc);
2344 return ret;
2345 }
2346
2347 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2348 {
2349 struct iwl_priv *priv = hw->priv;
2350 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2351 struct ieee80211_vif *vif;
2352 unsigned long flags;
2353 u32 base, status = 0xffffffff;
2354 int ret = -EIO;
2355
2356 mutex_lock(&priv->shrd->mutex);
2357
2358 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2359 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2360
2361 base = priv->device_pointers.error_event_table;
2362 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2363 spin_lock_irqsave(&priv->reg_lock, flags);
2364 ret = iwl_grab_nic_access_silent(priv);
2365 if (ret == 0) {
2366 iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2367 status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2368 iwl_release_nic_access(priv);
2369 }
2370 spin_unlock_irqrestore(&priv->reg_lock, flags);
2371
2372 #ifdef CONFIG_IWLWIFI_DEBUGFS
2373 if (ret == 0) {
2374 if (!priv->wowlan_sram)
2375 priv->wowlan_sram =
2376 kzalloc(priv->ucode_wowlan.data.len,
2377 GFP_KERNEL);
2378
2379 if (priv->wowlan_sram)
2380 _iwl_read_targ_mem_words(
2381 priv, 0x800000, priv->wowlan_sram,
2382 priv->ucode_wowlan.data.len / 4);
2383 }
2384 #endif
2385 }
2386
2387 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2388 vif = ctx->vif;
2389
2390 priv->shrd->wowlan = false;
2391
2392 device_set_wakeup_enable(priv->bus->dev, false);
2393
2394 iwlagn_prepare_restart(priv);
2395
2396 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2397 iwl_connection_init_rx_config(priv, ctx);
2398 iwlagn_set_rxon_chain(priv, ctx);
2399
2400 mutex_unlock(&priv->shrd->mutex);
2401
2402 ieee80211_resume_disconnect(vif);
2403
2404 return 1;
2405 }
2406 #endif
2407
2408 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2409 {
2410 struct iwl_priv *priv = hw->priv;
2411
2412 IWL_DEBUG_MACDUMP(priv, "enter\n");
2413
2414 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2415 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2416
2417 if (iwlagn_tx_skb(priv, skb))
2418 dev_kfree_skb_any(skb);
2419
2420 IWL_DEBUG_MACDUMP(priv, "leave\n");
2421 }
2422
2423 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2424 struct ieee80211_vif *vif,
2425 struct ieee80211_key_conf *keyconf,
2426 struct ieee80211_sta *sta,
2427 u32 iv32, u16 *phase1key)
2428 {
2429 struct iwl_priv *priv = hw->priv;
2430
2431 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2432 }
2433
2434 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2435 struct ieee80211_vif *vif,
2436 struct ieee80211_sta *sta,
2437 struct ieee80211_key_conf *key)
2438 {
2439 struct iwl_priv *priv = hw->priv;
2440 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2441 struct iwl_rxon_context *ctx = vif_priv->ctx;
2442 int ret;
2443 bool is_default_wep_key = false;
2444
2445 IWL_DEBUG_MAC80211(priv, "enter\n");
2446
2447 if (iwlagn_mod_params.sw_crypto) {
2448 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2449 return -EOPNOTSUPP;
2450 }
2451
2452 /*
2453 * We could program these keys into the hardware as well, but we
2454 * don't expect much multicast traffic in IBSS and having keys
2455 * for more stations is probably more useful.
2456 *
2457 * Mark key TX-only and return 0.
2458 */
2459 if (vif->type == NL80211_IFTYPE_ADHOC &&
2460 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2461 key->hw_key_idx = WEP_INVALID_OFFSET;
2462 return 0;
2463 }
2464
2465 /* If they key was TX-only, accept deletion */
2466 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2467 return 0;
2468
2469 mutex_lock(&priv->shrd->mutex);
2470 iwl_scan_cancel_timeout(priv, 100);
2471
2472 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2473
2474 /*
2475 * If we are getting WEP group key and we didn't receive any key mapping
2476 * so far, we are in legacy wep mode (group key only), otherwise we are
2477 * in 1X mode.
2478 * In legacy wep mode, we use another host command to the uCode.
2479 */
2480 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2481 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2482 if (cmd == SET_KEY)
2483 is_default_wep_key = !ctx->key_mapping_keys;
2484 else
2485 is_default_wep_key =
2486 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2487 }
2488
2489
2490 switch (cmd) {
2491 case SET_KEY:
2492 if (is_default_wep_key) {
2493 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2494 break;
2495 }
2496 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2497 if (ret) {
2498 /*
2499 * can't add key for RX, but we don't need it
2500 * in the device for TX so still return 0
2501 */
2502 ret = 0;
2503 key->hw_key_idx = WEP_INVALID_OFFSET;
2504 }
2505
2506 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2507 break;
2508 case DISABLE_KEY:
2509 if (is_default_wep_key)
2510 ret = iwl_remove_default_wep_key(priv, ctx, key);
2511 else
2512 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2513
2514 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2515 break;
2516 default:
2517 ret = -EINVAL;
2518 }
2519
2520 mutex_unlock(&priv->shrd->mutex);
2521 IWL_DEBUG_MAC80211(priv, "leave\n");
2522
2523 return ret;
2524 }
2525
2526 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2527 struct ieee80211_vif *vif,
2528 enum ieee80211_ampdu_mlme_action action,
2529 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2530 u8 buf_size)
2531 {
2532 struct iwl_priv *priv = hw->priv;
2533 int ret = -EINVAL;
2534 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2535
2536 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2537 sta->addr, tid);
2538
2539 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2540 return -EACCES;
2541
2542 mutex_lock(&priv->shrd->mutex);
2543
2544 switch (action) {
2545 case IEEE80211_AMPDU_RX_START:
2546 IWL_DEBUG_HT(priv, "start Rx\n");
2547 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2548 break;
2549 case IEEE80211_AMPDU_RX_STOP:
2550 IWL_DEBUG_HT(priv, "stop Rx\n");
2551 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2552 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2553 ret = 0;
2554 break;
2555 case IEEE80211_AMPDU_TX_START:
2556 IWL_DEBUG_HT(priv, "start Tx\n");
2557 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2558 if (ret == 0) {
2559 priv->agg_tids_count++;
2560 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2561 priv->agg_tids_count);
2562 }
2563 break;
2564 case IEEE80211_AMPDU_TX_STOP:
2565 IWL_DEBUG_HT(priv, "stop Tx\n");
2566 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2567 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2568 priv->agg_tids_count--;
2569 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2570 priv->agg_tids_count);
2571 }
2572 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2573 ret = 0;
2574 if (priv->cfg->ht_params &&
2575 priv->cfg->ht_params->use_rts_for_aggregation) {
2576 /*
2577 * switch off RTS/CTS if it was previously enabled
2578 */
2579 sta_priv->lq_sta.lq.general_params.flags &=
2580 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2581 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2582 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2583 }
2584 break;
2585 case IEEE80211_AMPDU_TX_OPERATIONAL:
2586 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2587
2588 iwl_trans_txq_agg_setup(trans(priv), iwl_sta_id(sta), tid,
2589 buf_size);
2590
2591 /*
2592 * If the limit is 0, then it wasn't initialised yet,
2593 * use the default. We can do that since we take the
2594 * minimum below, and we don't want to go above our
2595 * default due to hardware restrictions.
2596 */
2597 if (sta_priv->max_agg_bufsize == 0)
2598 sta_priv->max_agg_bufsize =
2599 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2600
2601 /*
2602 * Even though in theory the peer could have different
2603 * aggregation reorder buffer sizes for different sessions,
2604 * our ucode doesn't allow for that and has a global limit
2605 * for each station. Therefore, use the minimum of all the
2606 * aggregation sessions and our default value.
2607 */
2608 sta_priv->max_agg_bufsize =
2609 min(sta_priv->max_agg_bufsize, buf_size);
2610
2611 if (priv->cfg->ht_params &&
2612 priv->cfg->ht_params->use_rts_for_aggregation) {
2613 /*
2614 * switch to RTS/CTS if it is the prefer protection
2615 * method for HT traffic
2616 */
2617
2618 sta_priv->lq_sta.lq.general_params.flags |=
2619 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2620 }
2621
2622 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2623 sta_priv->max_agg_bufsize;
2624
2625 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2626 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2627
2628 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2629 sta->addr, tid);
2630 ret = 0;
2631 break;
2632 }
2633 mutex_unlock(&priv->shrd->mutex);
2634
2635 return ret;
2636 }
2637
2638 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2639 struct ieee80211_vif *vif,
2640 struct ieee80211_sta *sta)
2641 {
2642 struct iwl_priv *priv = hw->priv;
2643 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2644 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2645 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2646 int ret;
2647 u8 sta_id;
2648
2649 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2650 sta->addr);
2651 mutex_lock(&priv->shrd->mutex);
2652 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2653 sta->addr);
2654 sta_priv->common.sta_id = IWL_INVALID_STATION;
2655
2656 atomic_set(&sta_priv->pending_frames, 0);
2657 if (vif->type == NL80211_IFTYPE_AP)
2658 sta_priv->client = true;
2659
2660 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2661 is_ap, sta, &sta_id);
2662 if (ret) {
2663 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2664 sta->addr, ret);
2665 /* Should we return success if return code is EEXIST ? */
2666 mutex_unlock(&priv->shrd->mutex);
2667 return ret;
2668 }
2669
2670 sta_priv->common.sta_id = sta_id;
2671
2672 /* Initialize rate scaling */
2673 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2674 sta->addr);
2675 iwl_rs_rate_init(priv, sta, sta_id);
2676 mutex_unlock(&priv->shrd->mutex);
2677
2678 return 0;
2679 }
2680
2681 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2682 struct ieee80211_channel_switch *ch_switch)
2683 {
2684 struct iwl_priv *priv = hw->priv;
2685 const struct iwl_channel_info *ch_info;
2686 struct ieee80211_conf *conf = &hw->conf;
2687 struct ieee80211_channel *channel = ch_switch->channel;
2688 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2689 /*
2690 * MULTI-FIXME
2691 * When we add support for multiple interfaces, we need to
2692 * revisit this. The channel switch command in the device
2693 * only affects the BSS context, but what does that really
2694 * mean? And what if we get a CSA on the second interface?
2695 * This needs a lot of work.
2696 */
2697 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2698 u16 ch;
2699
2700 IWL_DEBUG_MAC80211(priv, "enter\n");
2701
2702 mutex_lock(&priv->shrd->mutex);
2703
2704 if (iwl_is_rfkill(priv))
2705 goto out;
2706
2707 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2708 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2709 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2710 goto out;
2711
2712 if (!iwl_is_associated_ctx(ctx))
2713 goto out;
2714
2715 if (!priv->cfg->lib->set_channel_switch)
2716 goto out;
2717
2718 ch = channel->hw_value;
2719 if (le16_to_cpu(ctx->active.channel) == ch)
2720 goto out;
2721
2722 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2723 if (!is_channel_valid(ch_info)) {
2724 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2725 goto out;
2726 }
2727
2728 spin_lock_irq(&priv->shrd->lock);
2729
2730 priv->current_ht_config.smps = conf->smps_mode;
2731
2732 /* Configure HT40 channels */
2733 ctx->ht.enabled = conf_is_ht(conf);
2734 if (ctx->ht.enabled) {
2735 if (conf_is_ht40_minus(conf)) {
2736 ctx->ht.extension_chan_offset =
2737 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2738 ctx->ht.is_40mhz = true;
2739 } else if (conf_is_ht40_plus(conf)) {
2740 ctx->ht.extension_chan_offset =
2741 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2742 ctx->ht.is_40mhz = true;
2743 } else {
2744 ctx->ht.extension_chan_offset =
2745 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2746 ctx->ht.is_40mhz = false;
2747 }
2748 } else
2749 ctx->ht.is_40mhz = false;
2750
2751 if ((le16_to_cpu(ctx->staging.channel) != ch))
2752 ctx->staging.flags = 0;
2753
2754 iwl_set_rxon_channel(priv, channel, ctx);
2755 iwl_set_rxon_ht(priv, ht_conf);
2756 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2757
2758 spin_unlock_irq(&priv->shrd->lock);
2759
2760 iwl_set_rate(priv);
2761 /*
2762 * at this point, staging_rxon has the
2763 * configuration for channel switch
2764 */
2765 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2766 priv->switch_channel = cpu_to_le16(ch);
2767 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2768 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2769 priv->switch_channel = 0;
2770 ieee80211_chswitch_done(ctx->vif, false);
2771 }
2772
2773 out:
2774 mutex_unlock(&priv->shrd->mutex);
2775 IWL_DEBUG_MAC80211(priv, "leave\n");
2776 }
2777
2778 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2779 unsigned int changed_flags,
2780 unsigned int *total_flags,
2781 u64 multicast)
2782 {
2783 struct iwl_priv *priv = hw->priv;
2784 __le32 filter_or = 0, filter_nand = 0;
2785 struct iwl_rxon_context *ctx;
2786
2787 #define CHK(test, flag) do { \
2788 if (*total_flags & (test)) \
2789 filter_or |= (flag); \
2790 else \
2791 filter_nand |= (flag); \
2792 } while (0)
2793
2794 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2795 changed_flags, *total_flags);
2796
2797 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2798 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2799 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2800 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2801
2802 #undef CHK
2803
2804 mutex_lock(&priv->shrd->mutex);
2805
2806 for_each_context(priv, ctx) {
2807 ctx->staging.filter_flags &= ~filter_nand;
2808 ctx->staging.filter_flags |= filter_or;
2809
2810 /*
2811 * Not committing directly because hardware can perform a scan,
2812 * but we'll eventually commit the filter flags change anyway.
2813 */
2814 }
2815
2816 mutex_unlock(&priv->shrd->mutex);
2817
2818 /*
2819 * Receiving all multicast frames is always enabled by the
2820 * default flags setup in iwl_connection_init_rx_config()
2821 * since we currently do not support programming multicast
2822 * filters into the device.
2823 */
2824 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2825 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2826 }
2827
2828 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2829 {
2830 struct iwl_priv *priv = hw->priv;
2831
2832 mutex_lock(&priv->shrd->mutex);
2833 IWL_DEBUG_MAC80211(priv, "enter\n");
2834
2835 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2836 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2837 goto done;
2838 }
2839 if (iwl_is_rfkill(priv)) {
2840 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2841 goto done;
2842 }
2843
2844 /*
2845 * mac80211 will not push any more frames for transmit
2846 * until the flush is completed
2847 */
2848 if (drop) {
2849 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2850 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2851 IWL_ERR(priv, "flush request fail\n");
2852 goto done;
2853 }
2854 }
2855 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2856 iwlagn_wait_tx_queue_empty(priv);
2857 done:
2858 mutex_unlock(&priv->shrd->mutex);
2859 IWL_DEBUG_MAC80211(priv, "leave\n");
2860 }
2861
2862 void iwlagn_disable_roc(struct iwl_priv *priv)
2863 {
2864 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2865
2866 lockdep_assert_held(&priv->shrd->mutex);
2867
2868 if (!priv->hw_roc_setup)
2869 return;
2870
2871 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2872 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2873
2874 priv->hw_roc_channel = NULL;
2875
2876 memset(ctx->staging.node_addr, 0, ETH_ALEN);
2877
2878 iwlagn_commit_rxon(priv, ctx);
2879
2880 ctx->is_active = false;
2881 priv->hw_roc_setup = false;
2882 }
2883
2884 static void iwlagn_disable_roc_work(struct work_struct *work)
2885 {
2886 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2887 hw_roc_disable_work.work);
2888
2889 mutex_lock(&priv->shrd->mutex);
2890 iwlagn_disable_roc(priv);
2891 mutex_unlock(&priv->shrd->mutex);
2892 }
2893
2894 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2895 struct ieee80211_channel *channel,
2896 enum nl80211_channel_type channel_type,
2897 int duration)
2898 {
2899 struct iwl_priv *priv = hw->priv;
2900 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2901 int err = 0;
2902
2903 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2904 return -EOPNOTSUPP;
2905
2906 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2907 return -EOPNOTSUPP;
2908
2909 mutex_lock(&priv->shrd->mutex);
2910
2911 /*
2912 * TODO: Remove this hack! Firmware needs to be updated
2913 * to allow longer off-channel periods in scanning for
2914 * this use case, based on a flag (and we'll need an API
2915 * flag in the firmware when it has that).
2916 */
2917 if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
2918 duration = 80;
2919
2920 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2921 err = -EBUSY;
2922 goto out;
2923 }
2924
2925 priv->hw_roc_channel = channel;
2926 priv->hw_roc_chantype = channel_type;
2927 priv->hw_roc_duration = duration;
2928 cancel_delayed_work(&priv->hw_roc_disable_work);
2929
2930 if (!ctx->is_active) {
2931 ctx->is_active = true;
2932 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2933 memcpy(ctx->staging.node_addr,
2934 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2935 ETH_ALEN);
2936 memcpy(ctx->staging.bssid_addr,
2937 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2938 ETH_ALEN);
2939 err = iwlagn_commit_rxon(priv, ctx);
2940 if (err)
2941 goto out;
2942 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2943 RXON_FILTER_PROMISC_MSK |
2944 RXON_FILTER_CTL2HOST_MSK;
2945
2946 err = iwlagn_commit_rxon(priv, ctx);
2947 if (err) {
2948 iwlagn_disable_roc(priv);
2949 goto out;
2950 }
2951 priv->hw_roc_setup = true;
2952 }
2953
2954 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2955 if (err)
2956 iwlagn_disable_roc(priv);
2957
2958 out:
2959 mutex_unlock(&priv->shrd->mutex);
2960
2961 return err;
2962 }
2963
2964 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2965 {
2966 struct iwl_priv *priv = hw->priv;
2967
2968 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2969 return -EOPNOTSUPP;
2970
2971 mutex_lock(&priv->shrd->mutex);
2972 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2973 iwlagn_disable_roc(priv);
2974 mutex_unlock(&priv->shrd->mutex);
2975
2976 return 0;
2977 }
2978
2979 /*****************************************************************************
2980 *
2981 * driver setup and teardown
2982 *
2983 *****************************************************************************/
2984
2985 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2986 {
2987 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2988
2989 init_waitqueue_head(&priv->wait_command_queue);
2990
2991 INIT_WORK(&priv->restart, iwl_bg_restart);
2992 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2993 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2994 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2995 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2996 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2997 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2998 iwlagn_disable_roc_work);
2999
3000 iwl_setup_scan_deferred_work(priv);
3001
3002 if (priv->cfg->lib->bt_setup_deferred_work)
3003 priv->cfg->lib->bt_setup_deferred_work(priv);
3004
3005 init_timer(&priv->statistics_periodic);
3006 priv->statistics_periodic.data = (unsigned long)priv;
3007 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3008
3009 init_timer(&priv->ucode_trace);
3010 priv->ucode_trace.data = (unsigned long)priv;
3011 priv->ucode_trace.function = iwl_bg_ucode_trace;
3012
3013 init_timer(&priv->watchdog);
3014 priv->watchdog.data = (unsigned long)priv;
3015 priv->watchdog.function = iwl_bg_watchdog;
3016 }
3017
3018 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3019 {
3020 if (priv->cfg->lib->cancel_deferred_work)
3021 priv->cfg->lib->cancel_deferred_work(priv);
3022
3023 cancel_work_sync(&priv->run_time_calib_work);
3024 cancel_work_sync(&priv->beacon_update);
3025
3026 iwl_cancel_scan_deferred_work(priv);
3027
3028 cancel_work_sync(&priv->bt_full_concurrency);
3029 cancel_work_sync(&priv->bt_runtime_config);
3030 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3031
3032 del_timer_sync(&priv->statistics_periodic);
3033 del_timer_sync(&priv->ucode_trace);
3034 }
3035
3036 static void iwl_init_hw_rates(struct iwl_priv *priv,
3037 struct ieee80211_rate *rates)
3038 {
3039 int i;
3040
3041 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3042 rates[i].bitrate = iwl_rates[i].ieee * 5;
3043 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3044 rates[i].hw_value_short = i;
3045 rates[i].flags = 0;
3046 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3047 /*
3048 * If CCK != 1M then set short preamble rate flag.
3049 */
3050 rates[i].flags |=
3051 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3052 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3053 }
3054 }
3055 }
3056
3057 static int iwl_init_drv(struct iwl_priv *priv)
3058 {
3059 int ret;
3060
3061 spin_lock_init(&priv->shrd->sta_lock);
3062 spin_lock_init(&priv->hcmd_lock);
3063
3064 mutex_init(&priv->shrd->mutex);
3065
3066 priv->ieee_channels = NULL;
3067 priv->ieee_rates = NULL;
3068 priv->band = IEEE80211_BAND_2GHZ;
3069
3070 priv->iw_mode = NL80211_IFTYPE_STATION;
3071 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3072 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3073 priv->agg_tids_count = 0;
3074
3075 /* initialize force reset */
3076 priv->force_reset[IWL_RF_RESET].reset_duration =
3077 IWL_DELAY_NEXT_FORCE_RF_RESET;
3078 priv->force_reset[IWL_FW_RESET].reset_duration =
3079 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3080
3081 priv->rx_statistics_jiffies = jiffies;
3082
3083 /* Choose which receivers/antennas to use */
3084 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3085
3086 iwl_init_scan_params(priv);
3087
3088 /* init bt coex */
3089 if (priv->cfg->bt_params &&
3090 priv->cfg->bt_params->advanced_bt_coexist) {
3091 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3092 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3093 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3094 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3095 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3096 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3097 }
3098
3099 ret = iwl_init_channel_map(priv);
3100 if (ret) {
3101 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3102 goto err;
3103 }
3104
3105 ret = iwl_init_geos(priv);
3106 if (ret) {
3107 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3108 goto err_free_channel_map;
3109 }
3110 iwl_init_hw_rates(priv, priv->ieee_rates);
3111
3112 return 0;
3113
3114 err_free_channel_map:
3115 iwl_free_channel_map(priv);
3116 err:
3117 return ret;
3118 }
3119
3120 static void iwl_uninit_drv(struct iwl_priv *priv)
3121 {
3122 iwl_calib_free_results(priv);
3123 iwl_free_geos(priv);
3124 iwl_free_channel_map(priv);
3125 kfree(priv->scan_cmd);
3126 kfree(priv->beacon_cmd);
3127 #ifdef CONFIG_IWLWIFI_DEBUGFS
3128 kfree(priv->wowlan_sram);
3129 #endif
3130 }
3131
3132 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3133 enum ieee80211_rssi_event rssi_event)
3134 {
3135 struct iwl_priv *priv = hw->priv;
3136
3137 mutex_lock(&priv->shrd->mutex);
3138
3139 if (priv->cfg->bt_params &&
3140 priv->cfg->bt_params->advanced_bt_coexist) {
3141 if (rssi_event == RSSI_EVENT_LOW)
3142 priv->bt_enable_pspoll = true;
3143 else if (rssi_event == RSSI_EVENT_HIGH)
3144 priv->bt_enable_pspoll = false;
3145
3146 iwlagn_send_advance_bt_config(priv);
3147 } else {
3148 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3149 "ignoring RSSI callback\n");
3150 }
3151
3152 mutex_unlock(&priv->shrd->mutex);
3153 }
3154
3155 struct ieee80211_ops iwlagn_hw_ops = {
3156 .tx = iwlagn_mac_tx,
3157 .start = iwlagn_mac_start,
3158 .stop = iwlagn_mac_stop,
3159 #ifdef CONFIG_PM
3160 .suspend = iwlagn_mac_suspend,
3161 .resume = iwlagn_mac_resume,
3162 #endif
3163 .add_interface = iwl_mac_add_interface,
3164 .remove_interface = iwl_mac_remove_interface,
3165 .change_interface = iwl_mac_change_interface,
3166 .config = iwlagn_mac_config,
3167 .configure_filter = iwlagn_configure_filter,
3168 .set_key = iwlagn_mac_set_key,
3169 .update_tkip_key = iwlagn_mac_update_tkip_key,
3170 .set_rekey_data = iwlagn_mac_set_rekey_data,
3171 .conf_tx = iwl_mac_conf_tx,
3172 .bss_info_changed = iwlagn_bss_info_changed,
3173 .ampdu_action = iwlagn_mac_ampdu_action,
3174 .hw_scan = iwl_mac_hw_scan,
3175 .sta_notify = iwlagn_mac_sta_notify,
3176 .sta_add = iwlagn_mac_sta_add,
3177 .sta_remove = iwl_mac_sta_remove,
3178 .channel_switch = iwlagn_mac_channel_switch,
3179 .flush = iwlagn_mac_flush,
3180 .tx_last_beacon = iwl_mac_tx_last_beacon,
3181 .remain_on_channel = iwl_mac_remain_on_channel,
3182 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3183 .rssi_callback = iwl_mac_rssi_callback,
3184 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3185 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3186 };
3187
3188 static u32 iwl_hw_detect(struct iwl_priv *priv)
3189 {
3190 return iwl_read32(priv, CSR_HW_REV);
3191 }
3192
3193 static int iwl_set_hw_params(struct iwl_priv *priv)
3194 {
3195 hw_params(priv).max_rxq_size = RX_QUEUE_SIZE;
3196 hw_params(priv).max_rxq_log = RX_QUEUE_SIZE_LOG;
3197 if (iwlagn_mod_params.amsdu_size_8K)
3198 hw_params(priv).rx_page_order =
3199 get_order(IWL_RX_BUF_SIZE_8K);
3200 else
3201 hw_params(priv).rx_page_order =
3202 get_order(IWL_RX_BUF_SIZE_4K);
3203
3204 hw_params(priv).max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3205
3206 if (iwlagn_mod_params.disable_11n)
3207 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3208
3209 /* Device-specific setup */
3210 return priv->cfg->lib->set_hw_params(priv);
3211 }
3212
3213 /* This function both allocates and initializes hw and priv. */
3214 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3215 {
3216 struct iwl_priv *priv;
3217 /* mac80211 allocates memory for this device instance, including
3218 * space for this driver's private structure */
3219 struct ieee80211_hw *hw;
3220
3221 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3222 if (hw == NULL) {
3223 pr_err("%s: Can not allocate network device\n",
3224 cfg->name);
3225 goto out;
3226 }
3227
3228 priv = hw->priv;
3229 priv->hw = hw;
3230
3231 out:
3232 return hw;
3233 }
3234
3235 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3236 struct iwl_cfg *cfg)
3237 {
3238 int err = 0;
3239 struct iwl_priv *priv;
3240 struct ieee80211_hw *hw;
3241 u16 num_mac;
3242 u32 hw_rev;
3243
3244 /************************
3245 * 1. Allocating HW data
3246 ************************/
3247 hw = iwl_alloc_all(cfg);
3248 if (!hw) {
3249 err = -ENOMEM;
3250 goto out;
3251 }
3252
3253 priv = hw->priv;
3254 priv->bus = bus;
3255 priv->shrd = &priv->_shrd;
3256 priv->shrd->bus = bus;
3257 priv->shrd->priv = priv;
3258 bus_set_drv_data(priv->bus, priv->shrd);
3259
3260 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3261 if (priv->shrd->trans == NULL) {
3262 err = -ENOMEM;
3263 goto out_free_traffic_mem;
3264 }
3265
3266 /* At this point both hw and priv are allocated. */
3267
3268 SET_IEEE80211_DEV(hw, priv->bus->dev);
3269
3270 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3271 priv->cfg = cfg;
3272
3273 /* is antenna coupling more than 35dB ? */
3274 priv->bt_ant_couple_ok =
3275 (iwlagn_mod_params.ant_coupling >
3276 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3277 true : false;
3278
3279 /* enable/disable bt channel inhibition */
3280 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3281 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3282 (priv->bt_ch_announce) ? "On" : "Off");
3283
3284 if (iwl_alloc_traffic_mem(priv))
3285 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3286
3287 /* these spin locks will be used in apm_ops.init and EEPROM access
3288 * we should init now
3289 */
3290 spin_lock_init(&priv->reg_lock);
3291 spin_lock_init(&priv->shrd->lock);
3292
3293 /*
3294 * stop and reset the on-board processor just in case it is in a
3295 * strange state ... like being left stranded by a primary kernel
3296 * and this is now the kdump kernel trying to start up
3297 */
3298 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3299
3300 /***********************
3301 * 3. Read REV register
3302 ***********************/
3303 hw_rev = iwl_hw_detect(priv);
3304 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3305 priv->cfg->name, hw_rev);
3306
3307 err = iwl_trans_request_irq(trans(priv));
3308 if (err)
3309 goto out_free_trans;
3310
3311 if (iwl_trans_prepare_card_hw(trans(priv))) {
3312 err = -EIO;
3313 IWL_WARN(priv, "Failed, HW not ready\n");
3314 goto out_free_trans;
3315 }
3316
3317 /*****************
3318 * 4. Read EEPROM
3319 *****************/
3320 /* Read the EEPROM */
3321 err = iwl_eeprom_init(priv, hw_rev);
3322 if (err) {
3323 IWL_ERR(priv, "Unable to init EEPROM\n");
3324 goto out_free_trans;
3325 }
3326 err = iwl_eeprom_check_version(priv);
3327 if (err)
3328 goto out_free_eeprom;
3329
3330 err = iwl_eeprom_check_sku(priv);
3331 if (err)
3332 goto out_free_eeprom;
3333
3334 /* extract MAC Address */
3335 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3336 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3337 priv->hw->wiphy->addresses = priv->addresses;
3338 priv->hw->wiphy->n_addresses = 1;
3339 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3340 if (num_mac > 1) {
3341 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3342 ETH_ALEN);
3343 priv->addresses[1].addr[5]++;
3344 priv->hw->wiphy->n_addresses++;
3345 }
3346
3347 /************************
3348 * 5. Setup HW constants
3349 ************************/
3350 if (iwl_set_hw_params(priv)) {
3351 err = -ENOENT;
3352 IWL_ERR(priv, "failed to set hw parameters\n");
3353 goto out_free_eeprom;
3354 }
3355
3356 /*******************
3357 * 6. Setup priv
3358 *******************/
3359
3360 err = iwl_init_drv(priv);
3361 if (err)
3362 goto out_free_eeprom;
3363 /* At this point both hw and priv are initialized. */
3364
3365 /********************
3366 * 7. Setup services
3367 ********************/
3368 iwl_setup_deferred_work(priv);
3369 iwl_setup_rx_handlers(priv);
3370 iwl_testmode_init(priv);
3371
3372 /*********************************************
3373 * 8. Enable interrupts
3374 *********************************************/
3375
3376 iwl_enable_rfkill_int(priv);
3377
3378 /* If platform's RF_KILL switch is NOT set to KILL */
3379 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3380 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3381 else
3382 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3383
3384 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3385 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3386
3387 iwl_power_initialize(priv);
3388 iwl_tt_initialize(priv);
3389
3390 init_completion(&priv->firmware_loading_complete);
3391
3392 err = iwl_request_firmware(priv, true);
3393 if (err)
3394 goto out_destroy_workqueue;
3395
3396 return 0;
3397
3398 out_destroy_workqueue:
3399 destroy_workqueue(priv->shrd->workqueue);
3400 priv->shrd->workqueue = NULL;
3401 iwl_uninit_drv(priv);
3402 out_free_eeprom:
3403 iwl_eeprom_free(priv);
3404 out_free_trans:
3405 iwl_trans_free(trans(priv));
3406 out_free_traffic_mem:
3407 iwl_free_traffic_mem(priv);
3408 ieee80211_free_hw(priv->hw);
3409 out:
3410 return err;
3411 }
3412
3413 void __devexit iwl_remove(struct iwl_priv * priv)
3414 {
3415 wait_for_completion(&priv->firmware_loading_complete);
3416
3417 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3418
3419 iwl_dbgfs_unregister(priv);
3420 sysfs_remove_group(&priv->bus->dev->kobj,
3421 &iwl_attribute_group);
3422
3423 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3424 * to be called and iwl_down since we are removing the device
3425 * we need to set STATUS_EXIT_PENDING bit.
3426 */
3427 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3428
3429 iwl_testmode_cleanup(priv);
3430 iwl_leds_exit(priv);
3431
3432 if (priv->mac80211_registered) {
3433 ieee80211_unregister_hw(priv->hw);
3434 priv->mac80211_registered = 0;
3435 }
3436
3437 /* Reset to low power before unloading driver. */
3438 iwl_apm_stop(priv);
3439
3440 iwl_tt_exit(priv);
3441
3442 /* make sure we flush any pending irq or
3443 * tasklet for the driver */
3444 iwl_trans_disable_sync_irq(trans(priv));
3445
3446 iwl_dealloc_ucode(priv);
3447
3448 iwl_trans_rx_free(trans(priv));
3449 iwl_trans_tx_free(trans(priv));
3450
3451 iwl_eeprom_free(priv);
3452
3453 /*netif_stop_queue(dev); */
3454 flush_workqueue(priv->shrd->workqueue);
3455
3456 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3457 * priv->shrd->workqueue... so we can't take down the workqueue
3458 * until now... */
3459 destroy_workqueue(priv->shrd->workqueue);
3460 priv->shrd->workqueue = NULL;
3461 iwl_free_traffic_mem(priv);
3462
3463 iwl_trans_free(trans(priv));
3464
3465 bus_set_drv_data(priv->bus, NULL);
3466
3467 iwl_uninit_drv(priv);
3468
3469 dev_kfree_skb(priv->beacon_skb);
3470
3471 ieee80211_free_hw(priv->hw);
3472 }
3473
3474
3475 /*****************************************************************************
3476 *
3477 * driver and module entry point
3478 *
3479 *****************************************************************************/
3480 static int __init iwl_init(void)
3481 {
3482
3483 int ret;
3484 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3485 pr_info(DRV_COPYRIGHT "\n");
3486
3487 ret = iwlagn_rate_control_register();
3488 if (ret) {
3489 pr_err("Unable to register rate control algorithm: %d\n", ret);
3490 return ret;
3491 }
3492
3493 ret = iwl_pci_register_driver();
3494
3495 if (ret)
3496 goto error_register;
3497 return ret;
3498
3499 error_register:
3500 iwlagn_rate_control_unregister();
3501 return ret;
3502 }
3503
3504 static void __exit iwl_exit(void)
3505 {
3506 iwl_pci_unregister_driver();
3507 iwlagn_rate_control_unregister();
3508 }
3509
3510 module_exit(iwl_exit);
3511 module_init(iwl_init);
3512
3513 #ifdef CONFIG_IWLWIFI_DEBUG
3514 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3515 S_IRUGO | S_IWUSR);
3516 MODULE_PARM_DESC(debug, "debug output mask");
3517 #endif
3518
3519 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3520 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3521 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3522 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3523 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3524 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3525 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3526 int, S_IRUGO);
3527 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3528 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3529 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3530
3531 module_param_named(ucode_alternative,
3532 iwlagn_mod_params.wanted_ucode_alternative,
3533 int, S_IRUGO);
3534 MODULE_PARM_DESC(ucode_alternative,
3535 "specify ucode alternative to use from ucode file");
3536
3537 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3538 int, S_IRUGO);
3539 MODULE_PARM_DESC(antenna_coupling,
3540 "specify antenna coupling in dB (defualt: 0 dB)");
3541
3542 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3543 bool, S_IRUGO);
3544 MODULE_PARM_DESC(bt_ch_inhibition,
3545 "Enable BT channel inhibition (default: enable)");
3546
3547 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3548 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3549
3550 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3551 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3552
3553 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3554 MODULE_PARM_DESC(wd_disable,
3555 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3556
3557 /*
3558 * set bt_coex_active to true, uCode will do kill/defer
3559 * every time the priority line is asserted (BT is sending signals on the
3560 * priority line in the PCIx).
3561 * set bt_coex_active to false, uCode will ignore the BT activity and
3562 * perform the normal operation
3563 *
3564 * User might experience transmit issue on some platform due to WiFi/BT
3565 * co-exist problem. The possible behaviors are:
3566 * Able to scan and finding all the available AP
3567 * Not able to associate with any AP
3568 * On those platforms, WiFi communication can be restored by set
3569 * "bt_coex_active" module parameter to "false"
3570 *
3571 * default: bt_coex_active = true (BT_COEX_ENABLE)
3572 */
3573 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3574 bool, S_IRUGO);
3575 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3576
3577 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3578 MODULE_PARM_DESC(led_mode, "0=system default, "
3579 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3580
3581 module_param_named(power_save, iwlagn_mod_params.power_save,
3582 bool, S_IRUGO);
3583 MODULE_PARM_DESC(power_save,
3584 "enable WiFi power management (default: disable)");
3585
3586 module_param_named(power_level, iwlagn_mod_params.power_level,
3587 int, S_IRUGO);
3588 MODULE_PARM_DESC(power_level,
3589 "default power save level (range from 1 - 5, default: 1)");
3590
3591 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3592 bool, S_IRUGO);
3593 MODULE_PARM_DESC(auto_agg,
3594 "enable agg w/o check traffic load (default: enable)");
3595
3596 /*
3597 * For now, keep using power level 1 instead of automatically
3598 * adjusting ...
3599 */
3600 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3601 bool, S_IRUGO);
3602 MODULE_PARM_DESC(no_sleep_autoadjust,
3603 "don't automatically adjust sleep level "
3604 "according to maximum network latency (default: true)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree