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iwlwifi: do not re-configure HT40 after associated
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
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-agn-calib.h"
51 #include "iwl-agn.h"
52 #include "iwl-shared.h"
53 #include "iwl-bus.h"
54 #include "iwl-trans.h"
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 */
65 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #define DRV_VERSION IWLWIFI_VERSION VD
74
75
76 MODULE_DESCRIPTION(DRV_DESCRIPTION);
77 MODULE_VERSION(DRV_VERSION);
78 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
79 MODULE_LICENSE("GPL");
80 MODULE_ALIAS("iwlagn");
81
82 void iwl_update_chain_flags(struct iwl_priv *priv)
83 {
84 struct iwl_rxon_context *ctx;
85
86 for_each_context(priv, ctx) {
87 iwlagn_set_rxon_chain(priv, ctx);
88 if (ctx->active.rx_chain != ctx->staging.rx_chain)
89 iwlagn_commit_rxon(priv, ctx);
90 }
91 }
92
93 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
94 static void iwl_set_beacon_tim(struct iwl_priv *priv,
95 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
96 u8 *beacon, u32 frame_size)
97 {
98 u16 tim_idx;
99 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
100
101 /*
102 * The index is relative to frame start but we start looking at the
103 * variable-length part of the beacon.
104 */
105 tim_idx = mgmt->u.beacon.variable - beacon;
106
107 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
108 while ((tim_idx < (frame_size - 2)) &&
109 (beacon[tim_idx] != WLAN_EID_TIM))
110 tim_idx += beacon[tim_idx+1] + 2;
111
112 /* If TIM field was found, set variables */
113 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
114 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
115 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
116 } else
117 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
118 }
119
120 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
121 {
122 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
123 struct iwl_host_cmd cmd = {
124 .id = REPLY_TX_BEACON,
125 .flags = CMD_SYNC,
126 };
127 struct ieee80211_tx_info *info;
128 u32 frame_size;
129 u32 rate_flags;
130 u32 rate;
131
132 /*
133 * We have to set up the TX command, the TX Beacon command, and the
134 * beacon contents.
135 */
136
137 lockdep_assert_held(&priv->shrd->mutex);
138
139 if (!priv->beacon_ctx) {
140 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
141 return 0;
142 }
143
144 if (WARN_ON(!priv->beacon_skb))
145 return -EINVAL;
146
147 /* Allocate beacon command */
148 if (!priv->beacon_cmd)
149 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
150 tx_beacon_cmd = priv->beacon_cmd;
151 if (!tx_beacon_cmd)
152 return -ENOMEM;
153
154 frame_size = priv->beacon_skb->len;
155
156 /* Set up TX command fields */
157 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
158 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
159 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
160 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
161 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
162
163 /* Set up TX beacon command fields */
164 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
165 frame_size);
166
167 /* Set up packet rate and flags */
168 info = IEEE80211_SKB_CB(priv->beacon_skb);
169
170 /*
171 * Let's set up the rate at least somewhat correctly;
172 * it will currently not actually be used by the uCode,
173 * it uses the broadcast station's rate instead.
174 */
175 if (info->control.rates[0].idx < 0 ||
176 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
177 rate = 0;
178 else
179 rate = info->control.rates[0].idx;
180
181 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
182 hw_params(priv).valid_tx_ant);
183 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
184
185 /* In mac80211, rates for 5 GHz start at 0 */
186 if (info->band == IEEE80211_BAND_5GHZ)
187 rate += IWL_FIRST_OFDM_RATE;
188 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
189 rate_flags |= RATE_MCS_CCK_MSK;
190
191 tx_beacon_cmd->tx.rate_n_flags =
192 iwl_hw_set_rate_n_flags(rate, rate_flags);
193
194 /* Submit command */
195 cmd.len[0] = sizeof(*tx_beacon_cmd);
196 cmd.data[0] = tx_beacon_cmd;
197 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
198 cmd.len[1] = frame_size;
199 cmd.data[1] = priv->beacon_skb->data;
200 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
201
202 return iwl_trans_send_cmd(trans(priv), &cmd);
203 }
204
205 static void iwl_bg_beacon_update(struct work_struct *work)
206 {
207 struct iwl_priv *priv =
208 container_of(work, struct iwl_priv, beacon_update);
209 struct sk_buff *beacon;
210
211 mutex_lock(&priv->shrd->mutex);
212 if (!priv->beacon_ctx) {
213 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
214 goto out;
215 }
216
217 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
218 /*
219 * The ucode will send beacon notifications even in
220 * IBSS mode, but we don't want to process them. But
221 * we need to defer the type check to here due to
222 * requiring locking around the beacon_ctx access.
223 */
224 goto out;
225 }
226
227 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
228 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
229 if (!beacon) {
230 IWL_ERR(priv, "update beacon failed -- keeping old\n");
231 goto out;
232 }
233
234 /* new beacon skb is allocated every time; dispose previous.*/
235 dev_kfree_skb(priv->beacon_skb);
236
237 priv->beacon_skb = beacon;
238
239 iwlagn_send_beacon_cmd(priv);
240 out:
241 mutex_unlock(&priv->shrd->mutex);
242 }
243
244 static void iwl_bg_bt_runtime_config(struct work_struct *work)
245 {
246 struct iwl_priv *priv =
247 container_of(work, struct iwl_priv, bt_runtime_config);
248
249 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
250 return;
251
252 /* dont send host command if rf-kill is on */
253 if (!iwl_is_ready_rf(priv->shrd))
254 return;
255 iwlagn_send_advance_bt_config(priv);
256 }
257
258 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
259 {
260 struct iwl_priv *priv =
261 container_of(work, struct iwl_priv, bt_full_concurrency);
262 struct iwl_rxon_context *ctx;
263
264 mutex_lock(&priv->shrd->mutex);
265
266 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
267 goto out;
268
269 /* dont send host command if rf-kill is on */
270 if (!iwl_is_ready_rf(priv->shrd))
271 goto out;
272
273 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
274 priv->bt_full_concurrent ?
275 "full concurrency" : "3-wire");
276
277 /*
278 * LQ & RXON updated cmds must be sent before BT Config cmd
279 * to avoid 3-wire collisions
280 */
281 for_each_context(priv, ctx) {
282 iwlagn_set_rxon_chain(priv, ctx);
283 iwlagn_commit_rxon(priv, ctx);
284 }
285
286 iwlagn_send_advance_bt_config(priv);
287 out:
288 mutex_unlock(&priv->shrd->mutex);
289 }
290
291 /**
292 * iwl_bg_statistics_periodic - Timer callback to queue statistics
293 *
294 * This callback is provided in order to send a statistics request.
295 *
296 * This timer function is continually reset to execute within
297 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
298 * was received. We need to ensure we receive the statistics in order
299 * to update the temperature used for calibrating the TXPOWER.
300 */
301 static void iwl_bg_statistics_periodic(unsigned long data)
302 {
303 struct iwl_priv *priv = (struct iwl_priv *)data;
304
305 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
306 return;
307
308 /* dont send host command if rf-kill is on */
309 if (!iwl_is_ready_rf(priv->shrd))
310 return;
311
312 iwl_send_statistics_request(priv, CMD_ASYNC, false);
313 }
314
315
316 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
317 u32 start_idx, u32 num_events,
318 u32 mode)
319 {
320 u32 i;
321 u32 ptr; /* SRAM byte address of log data */
322 u32 ev, time, data; /* event log data */
323 unsigned long reg_flags;
324
325 if (mode == 0)
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
327 else
328 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
329
330 /* Make sure device is powered up for SRAM reads */
331 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
332 if (iwl_grab_nic_access(bus(priv))) {
333 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
334 return;
335 }
336
337 /* Set starting address; reads will auto-increment */
338 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
339 rmb();
340
341 /*
342 * "time" is actually "data" for mode 0 (no timestamp).
343 * place event id # at far right for easier visual parsing.
344 */
345 for (i = 0; i < num_events; i++) {
346 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
347 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
348 if (mode == 0) {
349 trace_iwlwifi_dev_ucode_cont_event(priv,
350 0, time, ev);
351 } else {
352 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
353 trace_iwlwifi_dev_ucode_cont_event(priv,
354 time, data, ev);
355 }
356 }
357 /* Allow device to power down */
358 iwl_release_nic_access(bus(priv));
359 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
360 }
361
362 static void iwl_continuous_event_trace(struct iwl_priv *priv)
363 {
364 u32 capacity; /* event log capacity in # entries */
365 u32 base; /* SRAM byte address of event log header */
366 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
367 u32 num_wraps; /* # times uCode wrapped to top of log */
368 u32 next_entry; /* index of next entry to be written by uCode */
369
370 base = priv->device_pointers.error_event_table;
371 if (iwlagn_hw_valid_rtc_data_addr(base)) {
372 capacity = iwl_read_targ_mem(bus(priv), base);
373 num_wraps = iwl_read_targ_mem(bus(priv),
374 base + (2 * sizeof(u32)));
375 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
376 next_entry = iwl_read_targ_mem(bus(priv),
377 base + (3 * sizeof(u32)));
378 } else
379 return;
380
381 if (num_wraps == priv->event_log.num_wraps) {
382 iwl_print_cont_event_trace(priv,
383 base, priv->event_log.next_entry,
384 next_entry - priv->event_log.next_entry,
385 mode);
386 priv->event_log.non_wraps_count++;
387 } else {
388 if ((num_wraps - priv->event_log.num_wraps) > 1)
389 priv->event_log.wraps_more_count++;
390 else
391 priv->event_log.wraps_once_count++;
392 trace_iwlwifi_dev_ucode_wrap_event(priv,
393 num_wraps - priv->event_log.num_wraps,
394 next_entry, priv->event_log.next_entry);
395 if (next_entry < priv->event_log.next_entry) {
396 iwl_print_cont_event_trace(priv, base,
397 priv->event_log.next_entry,
398 capacity - priv->event_log.next_entry,
399 mode);
400
401 iwl_print_cont_event_trace(priv, base, 0,
402 next_entry, mode);
403 } else {
404 iwl_print_cont_event_trace(priv, base,
405 next_entry, capacity - next_entry,
406 mode);
407
408 iwl_print_cont_event_trace(priv, base, 0,
409 next_entry, mode);
410 }
411 }
412 priv->event_log.num_wraps = num_wraps;
413 priv->event_log.next_entry = next_entry;
414 }
415
416 /**
417 * iwl_bg_ucode_trace - Timer callback to log ucode event
418 *
419 * The timer is continually set to execute every
420 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
421 * this function is to perform continuous uCode event logging operation
422 * if enabled
423 */
424 static void iwl_bg_ucode_trace(unsigned long data)
425 {
426 struct iwl_priv *priv = (struct iwl_priv *)data;
427
428 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
429 return;
430
431 if (priv->event_log.ucode_trace) {
432 iwl_continuous_event_trace(priv);
433 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
434 mod_timer(&priv->ucode_trace,
435 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
436 }
437 }
438
439 static void iwl_bg_tx_flush(struct work_struct *work)
440 {
441 struct iwl_priv *priv =
442 container_of(work, struct iwl_priv, tx_flush);
443
444 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
445 return;
446
447 /* do nothing if rf-kill is on */
448 if (!iwl_is_ready_rf(priv->shrd))
449 return;
450
451 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
452 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
453 }
454
455 /******************************************************************************
456 *
457 * uCode download functions
458 *
459 ******************************************************************************/
460
461 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
462 {
463 if (desc->v_addr)
464 dma_free_coherent(bus(priv)->dev, desc->len,
465 desc->v_addr, desc->p_addr);
466 desc->v_addr = NULL;
467 desc->len = 0;
468 }
469
470 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
471 {
472 iwl_free_fw_desc(priv, &img->code);
473 iwl_free_fw_desc(priv, &img->data);
474 }
475
476 static void iwl_dealloc_ucode(struct iwl_priv *priv)
477 {
478 iwl_free_fw_img(priv, &priv->ucode_rt);
479 iwl_free_fw_img(priv, &priv->ucode_init);
480 iwl_free_fw_img(priv, &priv->ucode_wowlan);
481 }
482
483 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
484 const void *data, size_t len)
485 {
486 if (!len) {
487 desc->v_addr = NULL;
488 return -EINVAL;
489 }
490
491 desc->v_addr = dma_alloc_coherent(bus(priv)->dev, len,
492 &desc->p_addr, GFP_KERNEL);
493 if (!desc->v_addr)
494 return -ENOMEM;
495
496 desc->len = len;
497 memcpy(desc->v_addr, data, len);
498 return 0;
499 }
500
501 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
502 {
503 int i;
504
505 /*
506 * The default context is always valid,
507 * the PAN context depends on uCode.
508 */
509 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
510 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
511 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
512
513 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
514 priv->contexts[i].ctxid = i;
515
516 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
517 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
518 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
519 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
520 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
521 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
522 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
523 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
524 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
525 BIT(NL80211_IFTYPE_ADHOC);
526 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
527 BIT(NL80211_IFTYPE_STATION);
528 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
529 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
530 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
531 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
532
533 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
534 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
535 REPLY_WIPAN_RXON_TIMING;
536 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
537 REPLY_WIPAN_RXON_ASSOC;
538 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
539 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
540 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
541 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
542 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
543 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
544 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
545
546 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
547 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
548 BIT(NL80211_IFTYPE_P2P_CLIENT) |
549 BIT(NL80211_IFTYPE_P2P_GO);
550
551 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
552 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
553 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
554
555 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
556 }
557
558
559 struct iwlagn_ucode_capabilities {
560 u32 max_probe_length;
561 u32 standard_phy_calibration_size;
562 u32 flags;
563 };
564
565 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
566 static int iwlagn_mac_setup_register(struct iwl_priv *priv,
567 struct iwlagn_ucode_capabilities *capa);
568
569 #define UCODE_EXPERIMENTAL_INDEX 100
570 #define UCODE_EXPERIMENTAL_TAG "exp"
571
572 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
573 {
574 const char *name_pre = priv->cfg->fw_name_pre;
575 char tag[8];
576
577 if (first) {
578 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
579 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
580 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
581 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
582 #endif
583 priv->fw_index = priv->cfg->ucode_api_max;
584 sprintf(tag, "%d", priv->fw_index);
585 } else {
586 priv->fw_index--;
587 sprintf(tag, "%d", priv->fw_index);
588 }
589
590 if (priv->fw_index < priv->cfg->ucode_api_min) {
591 IWL_ERR(priv, "no suitable firmware found!\n");
592 return -ENOENT;
593 }
594
595 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
596
597 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
598 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
599 ? "EXPERIMENTAL " : "",
600 priv->firmware_name);
601
602 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
603 bus(priv)->dev,
604 GFP_KERNEL, priv, iwl_ucode_callback);
605 }
606
607 struct iwlagn_firmware_pieces {
608 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
609 size_t inst_size, data_size, init_size, init_data_size,
610 wowlan_inst_size, wowlan_data_size;
611
612 u32 build;
613
614 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
615 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
616 };
617
618 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
619 const struct firmware *ucode_raw,
620 struct iwlagn_firmware_pieces *pieces)
621 {
622 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
623 u32 api_ver, hdr_size;
624 const u8 *src;
625
626 priv->ucode_ver = le32_to_cpu(ucode->ver);
627 api_ver = IWL_UCODE_API(priv->ucode_ver);
628
629 switch (api_ver) {
630 default:
631 hdr_size = 28;
632 if (ucode_raw->size < hdr_size) {
633 IWL_ERR(priv, "File size too small!\n");
634 return -EINVAL;
635 }
636 pieces->build = le32_to_cpu(ucode->u.v2.build);
637 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
638 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
639 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
640 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
641 src = ucode->u.v2.data;
642 break;
643 case 0:
644 case 1:
645 case 2:
646 hdr_size = 24;
647 if (ucode_raw->size < hdr_size) {
648 IWL_ERR(priv, "File size too small!\n");
649 return -EINVAL;
650 }
651 pieces->build = 0;
652 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
653 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
654 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
655 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
656 src = ucode->u.v1.data;
657 break;
658 }
659
660 /* Verify size of file vs. image size info in file's header */
661 if (ucode_raw->size != hdr_size + pieces->inst_size +
662 pieces->data_size + pieces->init_size +
663 pieces->init_data_size) {
664
665 IWL_ERR(priv,
666 "uCode file size %d does not match expected size\n",
667 (int)ucode_raw->size);
668 return -EINVAL;
669 }
670
671 pieces->inst = src;
672 src += pieces->inst_size;
673 pieces->data = src;
674 src += pieces->data_size;
675 pieces->init = src;
676 src += pieces->init_size;
677 pieces->init_data = src;
678 src += pieces->init_data_size;
679
680 return 0;
681 }
682
683 static int iwlagn_load_firmware(struct iwl_priv *priv,
684 const struct firmware *ucode_raw,
685 struct iwlagn_firmware_pieces *pieces,
686 struct iwlagn_ucode_capabilities *capa)
687 {
688 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
689 struct iwl_ucode_tlv *tlv;
690 size_t len = ucode_raw->size;
691 const u8 *data;
692 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
693 int tmp;
694 u64 alternatives;
695 u32 tlv_len;
696 enum iwl_ucode_tlv_type tlv_type;
697 const u8 *tlv_data;
698
699 if (len < sizeof(*ucode)) {
700 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
701 return -EINVAL;
702 }
703
704 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
705 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
706 le32_to_cpu(ucode->magic));
707 return -EINVAL;
708 }
709
710 /*
711 * Check which alternatives are present, and "downgrade"
712 * when the chosen alternative is not present, warning
713 * the user when that happens. Some files may not have
714 * any alternatives, so don't warn in that case.
715 */
716 alternatives = le64_to_cpu(ucode->alternatives);
717 tmp = wanted_alternative;
718 if (wanted_alternative > 63)
719 wanted_alternative = 63;
720 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
721 wanted_alternative--;
722 if (wanted_alternative && wanted_alternative != tmp)
723 IWL_WARN(priv,
724 "uCode alternative %d not available, choosing %d\n",
725 tmp, wanted_alternative);
726
727 priv->ucode_ver = le32_to_cpu(ucode->ver);
728 pieces->build = le32_to_cpu(ucode->build);
729 data = ucode->data;
730
731 len -= sizeof(*ucode);
732
733 while (len >= sizeof(*tlv)) {
734 u16 tlv_alt;
735
736 len -= sizeof(*tlv);
737 tlv = (void *)data;
738
739 tlv_len = le32_to_cpu(tlv->length);
740 tlv_type = le16_to_cpu(tlv->type);
741 tlv_alt = le16_to_cpu(tlv->alternative);
742 tlv_data = tlv->data;
743
744 if (len < tlv_len) {
745 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
746 len, tlv_len);
747 return -EINVAL;
748 }
749 len -= ALIGN(tlv_len, 4);
750 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
751
752 /*
753 * Alternative 0 is always valid.
754 *
755 * Skip alternative TLVs that are not selected.
756 */
757 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
758 continue;
759
760 switch (tlv_type) {
761 case IWL_UCODE_TLV_INST:
762 pieces->inst = tlv_data;
763 pieces->inst_size = tlv_len;
764 break;
765 case IWL_UCODE_TLV_DATA:
766 pieces->data = tlv_data;
767 pieces->data_size = tlv_len;
768 break;
769 case IWL_UCODE_TLV_INIT:
770 pieces->init = tlv_data;
771 pieces->init_size = tlv_len;
772 break;
773 case IWL_UCODE_TLV_INIT_DATA:
774 pieces->init_data = tlv_data;
775 pieces->init_data_size = tlv_len;
776 break;
777 case IWL_UCODE_TLV_BOOT:
778 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
779 break;
780 case IWL_UCODE_TLV_PROBE_MAX_LEN:
781 if (tlv_len != sizeof(u32))
782 goto invalid_tlv_len;
783 capa->max_probe_length =
784 le32_to_cpup((__le32 *)tlv_data);
785 break;
786 case IWL_UCODE_TLV_PAN:
787 if (tlv_len)
788 goto invalid_tlv_len;
789 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
790 break;
791 case IWL_UCODE_TLV_FLAGS:
792 /* must be at least one u32 */
793 if (tlv_len < sizeof(u32))
794 goto invalid_tlv_len;
795 /* and a proper number of u32s */
796 if (tlv_len % sizeof(u32))
797 goto invalid_tlv_len;
798 /*
799 * This driver only reads the first u32 as
800 * right now no more features are defined,
801 * if that changes then either the driver
802 * will not work with the new firmware, or
803 * it'll not take advantage of new features.
804 */
805 capa->flags = le32_to_cpup((__le32 *)tlv_data);
806 break;
807 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
808 if (tlv_len != sizeof(u32))
809 goto invalid_tlv_len;
810 pieces->init_evtlog_ptr =
811 le32_to_cpup((__le32 *)tlv_data);
812 break;
813 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
814 if (tlv_len != sizeof(u32))
815 goto invalid_tlv_len;
816 pieces->init_evtlog_size =
817 le32_to_cpup((__le32 *)tlv_data);
818 break;
819 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
820 if (tlv_len != sizeof(u32))
821 goto invalid_tlv_len;
822 pieces->init_errlog_ptr =
823 le32_to_cpup((__le32 *)tlv_data);
824 break;
825 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
826 if (tlv_len != sizeof(u32))
827 goto invalid_tlv_len;
828 pieces->inst_evtlog_ptr =
829 le32_to_cpup((__le32 *)tlv_data);
830 break;
831 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
832 if (tlv_len != sizeof(u32))
833 goto invalid_tlv_len;
834 pieces->inst_evtlog_size =
835 le32_to_cpup((__le32 *)tlv_data);
836 break;
837 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
838 if (tlv_len != sizeof(u32))
839 goto invalid_tlv_len;
840 pieces->inst_errlog_ptr =
841 le32_to_cpup((__le32 *)tlv_data);
842 break;
843 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
844 if (tlv_len)
845 goto invalid_tlv_len;
846 priv->enhance_sensitivity_table = true;
847 break;
848 case IWL_UCODE_TLV_WOWLAN_INST:
849 pieces->wowlan_inst = tlv_data;
850 pieces->wowlan_inst_size = tlv_len;
851 break;
852 case IWL_UCODE_TLV_WOWLAN_DATA:
853 pieces->wowlan_data = tlv_data;
854 pieces->wowlan_data_size = tlv_len;
855 break;
856 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
857 if (tlv_len != sizeof(u32))
858 goto invalid_tlv_len;
859 capa->standard_phy_calibration_size =
860 le32_to_cpup((__le32 *)tlv_data);
861 break;
862 default:
863 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
864 break;
865 }
866 }
867
868 if (len) {
869 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
870 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
871 return -EINVAL;
872 }
873
874 return 0;
875
876 invalid_tlv_len:
877 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
878 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
879
880 return -EINVAL;
881 }
882
883 /**
884 * iwl_ucode_callback - callback when firmware was loaded
885 *
886 * If loaded successfully, copies the firmware into buffers
887 * for the card to fetch (via DMA).
888 */
889 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
890 {
891 struct iwl_priv *priv = context;
892 struct iwl_ucode_header *ucode;
893 int err;
894 struct iwlagn_firmware_pieces pieces;
895 const unsigned int api_max = priv->cfg->ucode_api_max;
896 unsigned int api_ok = priv->cfg->ucode_api_ok;
897 const unsigned int api_min = priv->cfg->ucode_api_min;
898 u32 api_ver;
899 char buildstr[25];
900 u32 build;
901 struct iwlagn_ucode_capabilities ucode_capa = {
902 .max_probe_length = 200,
903 .standard_phy_calibration_size =
904 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
905 };
906
907 if (!api_ok)
908 api_ok = api_max;
909
910 memset(&pieces, 0, sizeof(pieces));
911
912 if (!ucode_raw) {
913 if (priv->fw_index <= api_ok)
914 IWL_ERR(priv,
915 "request for firmware file '%s' failed.\n",
916 priv->firmware_name);
917 goto try_again;
918 }
919
920 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
921 priv->firmware_name, ucode_raw->size);
922
923 /* Make sure that we got at least the API version number */
924 if (ucode_raw->size < 4) {
925 IWL_ERR(priv, "File size way too small!\n");
926 goto try_again;
927 }
928
929 /* Data from ucode file: header followed by uCode images */
930 ucode = (struct iwl_ucode_header *)ucode_raw->data;
931
932 if (ucode->ver)
933 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
934 else
935 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
936 &ucode_capa);
937
938 if (err)
939 goto try_again;
940
941 api_ver = IWL_UCODE_API(priv->ucode_ver);
942 build = pieces.build;
943
944 /*
945 * api_ver should match the api version forming part of the
946 * firmware filename ... but we don't check for that and only rely
947 * on the API version read from firmware header from here on forward
948 */
949 /* no api version check required for experimental uCode */
950 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
951 if (api_ver < api_min || api_ver > api_max) {
952 IWL_ERR(priv,
953 "Driver unable to support your firmware API. "
954 "Driver supports v%u, firmware is v%u.\n",
955 api_max, api_ver);
956 goto try_again;
957 }
958
959 if (api_ver < api_ok) {
960 if (api_ok != api_max)
961 IWL_ERR(priv, "Firmware has old API version, "
962 "expected v%u through v%u, got v%u.\n",
963 api_ok, api_max, api_ver);
964 else
965 IWL_ERR(priv, "Firmware has old API version, "
966 "expected v%u, got v%u.\n",
967 api_max, api_ver);
968 IWL_ERR(priv, "New firmware can be obtained from "
969 "http://www.intellinuxwireless.org/.\n");
970 }
971 }
972
973 if (build)
974 sprintf(buildstr, " build %u%s", build,
975 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
976 ? " (EXP)" : "");
977 else
978 buildstr[0] = '\0';
979
980 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
981 IWL_UCODE_MAJOR(priv->ucode_ver),
982 IWL_UCODE_MINOR(priv->ucode_ver),
983 IWL_UCODE_API(priv->ucode_ver),
984 IWL_UCODE_SERIAL(priv->ucode_ver),
985 buildstr);
986
987 snprintf(priv->hw->wiphy->fw_version,
988 sizeof(priv->hw->wiphy->fw_version),
989 "%u.%u.%u.%u%s",
990 IWL_UCODE_MAJOR(priv->ucode_ver),
991 IWL_UCODE_MINOR(priv->ucode_ver),
992 IWL_UCODE_API(priv->ucode_ver),
993 IWL_UCODE_SERIAL(priv->ucode_ver),
994 buildstr);
995
996 /*
997 * For any of the failures below (before allocating pci memory)
998 * we will try to load a version with a smaller API -- maybe the
999 * user just got a corrupted version of the latest API.
1000 */
1001
1002 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1003 priv->ucode_ver);
1004 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1005 pieces.inst_size);
1006 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1007 pieces.data_size);
1008 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1009 pieces.init_size);
1010 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1011 pieces.init_data_size);
1012
1013 /* Verify that uCode images will fit in card's SRAM */
1014 if (pieces.inst_size > hw_params(priv).max_inst_size) {
1015 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1016 pieces.inst_size);
1017 goto try_again;
1018 }
1019
1020 if (pieces.data_size > hw_params(priv).max_data_size) {
1021 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1022 pieces.data_size);
1023 goto try_again;
1024 }
1025
1026 if (pieces.init_size > hw_params(priv).max_inst_size) {
1027 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1028 pieces.init_size);
1029 goto try_again;
1030 }
1031
1032 if (pieces.init_data_size > hw_params(priv).max_data_size) {
1033 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1034 pieces.init_data_size);
1035 goto try_again;
1036 }
1037
1038 /* Allocate ucode buffers for card's bus-master loading ... */
1039
1040 /* Runtime instructions and 2 copies of data:
1041 * 1) unmodified from disk
1042 * 2) backup cache for save/restore during power-downs */
1043 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1044 pieces.inst, pieces.inst_size))
1045 goto err_pci_alloc;
1046 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1047 pieces.data, pieces.data_size))
1048 goto err_pci_alloc;
1049
1050 /* Initialization instructions and data */
1051 if (pieces.init_size && pieces.init_data_size) {
1052 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1053 pieces.init, pieces.init_size))
1054 goto err_pci_alloc;
1055 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1056 pieces.init_data, pieces.init_data_size))
1057 goto err_pci_alloc;
1058 }
1059
1060 /* WoWLAN instructions and data */
1061 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1062 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1063 pieces.wowlan_inst,
1064 pieces.wowlan_inst_size))
1065 goto err_pci_alloc;
1066 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1067 pieces.wowlan_data,
1068 pieces.wowlan_data_size))
1069 goto err_pci_alloc;
1070 }
1071
1072 /* Now that we can no longer fail, copy information */
1073
1074 /*
1075 * The (size - 16) / 12 formula is based on the information recorded
1076 * for each event, which is of mode 1 (including timestamp) for all
1077 * new microcodes that include this information.
1078 */
1079 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1080 if (pieces.init_evtlog_size)
1081 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1082 else
1083 priv->init_evtlog_size =
1084 priv->cfg->base_params->max_event_log_size;
1085 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1086 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1087 if (pieces.inst_evtlog_size)
1088 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1089 else
1090 priv->inst_evtlog_size =
1091 priv->cfg->base_params->max_event_log_size;
1092 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1093
1094 priv->new_scan_threshold_behaviour =
1095 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1096
1097 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1098 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1099
1100 /*
1101 * if not PAN, then don't support P2P -- might be a uCode
1102 * packaging bug or due to the eeprom check above
1103 */
1104 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1105 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1106
1107 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1108 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1109 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1110 } else {
1111 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1112 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1113 }
1114
1115 /*
1116 * figure out the offset of chain noise reset and gain commands
1117 * base on the size of standard phy calibration commands table size
1118 */
1119 if (ucode_capa.standard_phy_calibration_size >
1120 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1121 ucode_capa.standard_phy_calibration_size =
1122 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1123
1124 priv->phy_calib_chain_noise_reset_cmd =
1125 ucode_capa.standard_phy_calibration_size;
1126 priv->phy_calib_chain_noise_gain_cmd =
1127 ucode_capa.standard_phy_calibration_size + 1;
1128
1129 /* initialize all valid contexts */
1130 iwl_init_context(priv, ucode_capa.flags);
1131
1132 /**************************************************
1133 * This is still part of probe() in a sense...
1134 *
1135 * 9. Setup and register with mac80211 and debugfs
1136 **************************************************/
1137 err = iwlagn_mac_setup_register(priv, &ucode_capa);
1138 if (err)
1139 goto out_unbind;
1140
1141 err = iwl_dbgfs_register(priv, DRV_NAME);
1142 if (err)
1143 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1144
1145 /* We have our copies now, allow OS release its copies */
1146 release_firmware(ucode_raw);
1147 complete(&priv->firmware_loading_complete);
1148 return;
1149
1150 try_again:
1151 /* try next, if any */
1152 if (iwl_request_firmware(priv, false))
1153 goto out_unbind;
1154 release_firmware(ucode_raw);
1155 return;
1156
1157 err_pci_alloc:
1158 IWL_ERR(priv, "failed to allocate pci memory\n");
1159 iwl_dealloc_ucode(priv);
1160 out_unbind:
1161 complete(&priv->firmware_loading_complete);
1162 device_release_driver(bus(priv)->dev);
1163 release_firmware(ucode_raw);
1164 }
1165
1166 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1167 {
1168 struct iwl_ct_kill_config cmd;
1169 struct iwl_ct_kill_throttling_config adv_cmd;
1170 unsigned long flags;
1171 int ret = 0;
1172
1173 spin_lock_irqsave(&priv->shrd->lock, flags);
1174 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1175 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1176 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1177 priv->thermal_throttle.ct_kill_toggle = false;
1178
1179 if (priv->cfg->base_params->support_ct_kill_exit) {
1180 adv_cmd.critical_temperature_enter =
1181 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1182 adv_cmd.critical_temperature_exit =
1183 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1184
1185 ret = iwl_trans_send_cmd_pdu(trans(priv),
1186 REPLY_CT_KILL_CONFIG_CMD,
1187 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1188 if (ret)
1189 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1190 else
1191 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1192 "succeeded, critical temperature enter is %d,"
1193 "exit is %d\n",
1194 hw_params(priv).ct_kill_threshold,
1195 hw_params(priv).ct_kill_exit_threshold);
1196 } else {
1197 cmd.critical_temperature_R =
1198 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1199
1200 ret = iwl_trans_send_cmd_pdu(trans(priv),
1201 REPLY_CT_KILL_CONFIG_CMD,
1202 CMD_SYNC, sizeof(cmd), &cmd);
1203 if (ret)
1204 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1205 else
1206 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1207 "succeeded, "
1208 "critical temperature is %d\n",
1209 hw_params(priv).ct_kill_threshold);
1210 }
1211 }
1212
1213 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1214 {
1215 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1216 struct iwl_host_cmd cmd = {
1217 .id = CALIBRATION_CFG_CMD,
1218 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1219 .data = { &calib_cfg_cmd, },
1220 };
1221
1222 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1223 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1224 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1225
1226 return iwl_trans_send_cmd(trans(priv), &cmd);
1227 }
1228
1229
1230 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1231 {
1232 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1233 .valid = cpu_to_le32(valid_tx_ant),
1234 };
1235
1236 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1237 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1238 return iwl_trans_send_cmd_pdu(trans(priv),
1239 TX_ANT_CONFIGURATION_CMD,
1240 CMD_SYNC,
1241 sizeof(struct iwl_tx_ant_config_cmd),
1242 &tx_ant_cmd);
1243 } else {
1244 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1245 return -EOPNOTSUPP;
1246 }
1247 }
1248
1249 /**
1250 * iwl_alive_start - called after REPLY_ALIVE notification received
1251 * from protocol/runtime uCode (initialization uCode's
1252 * Alive gets handled by iwl_init_alive_start()).
1253 */
1254 int iwl_alive_start(struct iwl_priv *priv)
1255 {
1256 int ret = 0;
1257 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1258
1259 /*TODO: this should go to the transport layer */
1260 iwl_reset_ict(trans(priv));
1261
1262 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1263
1264 /* After the ALIVE response, we can send host commands to the uCode */
1265 set_bit(STATUS_ALIVE, &priv->shrd->status);
1266
1267 /* Enable watchdog to monitor the driver tx queues */
1268 iwl_setup_watchdog(priv);
1269
1270 if (iwl_is_rfkill(priv->shrd))
1271 return -ERFKILL;
1272
1273 /* download priority table before any calibration request */
1274 if (priv->cfg->bt_params &&
1275 priv->cfg->bt_params->advanced_bt_coexist) {
1276 /* Configure Bluetooth device coexistence support */
1277 if (priv->cfg->bt_params->bt_sco_disable)
1278 priv->bt_enable_pspoll = false;
1279 else
1280 priv->bt_enable_pspoll = true;
1281
1282 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1283 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1284 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1285 iwlagn_send_advance_bt_config(priv);
1286 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1287 priv->cur_rssi_ctx = NULL;
1288
1289 iwlagn_send_prio_tbl(priv);
1290
1291 /* FIXME: w/a to force change uCode BT state machine */
1292 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1293 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1294 if (ret)
1295 return ret;
1296 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1297 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1298 if (ret)
1299 return ret;
1300 } else {
1301 /*
1302 * default is 2-wire BT coexexistence support
1303 */
1304 iwl_send_bt_config(priv);
1305 }
1306
1307 if (hw_params(priv).calib_rt_cfg)
1308 iwlagn_send_calib_cfg_rt(priv,
1309 hw_params(priv).calib_rt_cfg);
1310
1311 ieee80211_wake_queues(priv->hw);
1312
1313 priv->active_rate = IWL_RATES_MASK;
1314
1315 /* Configure Tx antenna selection based on H/W config */
1316 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1317
1318 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1319 struct iwl_rxon_cmd *active_rxon =
1320 (struct iwl_rxon_cmd *)&ctx->active;
1321 /* apply any changes in staging */
1322 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1323 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1324 } else {
1325 struct iwl_rxon_context *tmp;
1326 /* Initialize our rx_config data */
1327 for_each_context(priv, tmp)
1328 iwl_connection_init_rx_config(priv, tmp);
1329
1330 iwlagn_set_rxon_chain(priv, ctx);
1331 }
1332
1333 if (!priv->shrd->wowlan) {
1334 /* WoWLAN ucode will not reply in the same way, skip it */
1335 iwl_reset_run_time_calib(priv);
1336 }
1337
1338 set_bit(STATUS_READY, &priv->shrd->status);
1339
1340 /* Configure the adapter for unassociated operation */
1341 ret = iwlagn_commit_rxon(priv, ctx);
1342 if (ret)
1343 return ret;
1344
1345 /* At this point, the NIC is initialized and operational */
1346 iwl_rf_kill_ct_config(priv);
1347
1348 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1349
1350 return iwl_power_update_mode(priv, true);
1351 }
1352
1353 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1354
1355 static void __iwl_down(struct iwl_priv *priv)
1356 {
1357 int exit_pending;
1358
1359 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1360
1361 iwl_scan_cancel_timeout(priv, 200);
1362
1363 /*
1364 * If active, scanning won't cancel it, so say it expired.
1365 * No race since we hold the mutex here and a new one
1366 * can't come in at this time.
1367 */
1368 ieee80211_remain_on_channel_expired(priv->hw);
1369
1370 exit_pending =
1371 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1372
1373 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1374 * to prevent rearm timer */
1375 del_timer_sync(&priv->watchdog);
1376
1377 iwl_clear_ucode_stations(priv, NULL);
1378 iwl_dealloc_bcast_stations(priv);
1379 iwl_clear_driver_stations(priv);
1380
1381 /* reset BT coex data */
1382 priv->bt_status = 0;
1383 priv->cur_rssi_ctx = NULL;
1384 priv->bt_is_sco = 0;
1385 if (priv->cfg->bt_params)
1386 priv->bt_traffic_load =
1387 priv->cfg->bt_params->bt_init_traffic_load;
1388 else
1389 priv->bt_traffic_load = 0;
1390 priv->bt_full_concurrent = false;
1391 priv->bt_ci_compliance = 0;
1392
1393 /* Wipe out the EXIT_PENDING status bit if we are not actually
1394 * exiting the module */
1395 if (!exit_pending)
1396 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1397
1398 if (priv->mac80211_registered)
1399 ieee80211_stop_queues(priv->hw);
1400
1401 iwl_trans_stop_device(trans(priv));
1402
1403 /* Clear out all status bits but a few that are stable across reset */
1404 priv->shrd->status &=
1405 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1406 STATUS_RF_KILL_HW |
1407 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1408 STATUS_GEO_CONFIGURED |
1409 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1410 STATUS_FW_ERROR |
1411 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1412 STATUS_EXIT_PENDING;
1413
1414 dev_kfree_skb(priv->beacon_skb);
1415 priv->beacon_skb = NULL;
1416 }
1417
1418 static void iwl_down(struct iwl_priv *priv)
1419 {
1420 mutex_lock(&priv->shrd->mutex);
1421 __iwl_down(priv);
1422 mutex_unlock(&priv->shrd->mutex);
1423
1424 iwl_cancel_deferred_work(priv);
1425 }
1426
1427 #define MAX_HW_RESTARTS 5
1428
1429 static int __iwl_up(struct iwl_priv *priv)
1430 {
1431 struct iwl_rxon_context *ctx;
1432 int ret;
1433
1434 lockdep_assert_held(&priv->shrd->mutex);
1435
1436 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1437 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1438 return -EIO;
1439 }
1440
1441 for_each_context(priv, ctx) {
1442 ret = iwlagn_alloc_bcast_station(priv, ctx);
1443 if (ret) {
1444 iwl_dealloc_bcast_stations(priv);
1445 return ret;
1446 }
1447 }
1448
1449 ret = iwlagn_run_init_ucode(priv);
1450 if (ret) {
1451 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1452 goto error;
1453 }
1454
1455 ret = iwlagn_load_ucode_wait_alive(priv,
1456 &priv->ucode_rt,
1457 IWL_UCODE_REGULAR);
1458 if (ret) {
1459 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1460 goto error;
1461 }
1462
1463 ret = iwl_alive_start(priv);
1464 if (ret)
1465 goto error;
1466 return 0;
1467
1468 error:
1469 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1470 __iwl_down(priv);
1471 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1472
1473 IWL_ERR(priv, "Unable to initialize device.\n");
1474 return ret;
1475 }
1476
1477
1478 /*****************************************************************************
1479 *
1480 * Workqueue callbacks
1481 *
1482 *****************************************************************************/
1483
1484 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1485 {
1486 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1487 run_time_calib_work);
1488
1489 mutex_lock(&priv->shrd->mutex);
1490
1491 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1492 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1493 mutex_unlock(&priv->shrd->mutex);
1494 return;
1495 }
1496
1497 if (priv->start_calib) {
1498 iwl_chain_noise_calibration(priv);
1499 iwl_sensitivity_calibration(priv);
1500 }
1501
1502 mutex_unlock(&priv->shrd->mutex);
1503 }
1504
1505 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1506 {
1507 struct iwl_rxon_context *ctx;
1508 bool bt_full_concurrent;
1509 u8 bt_ci_compliance;
1510 u8 bt_load;
1511 u8 bt_status;
1512 bool bt_is_sco;
1513
1514 lockdep_assert_held(&priv->shrd->mutex);
1515
1516 for_each_context(priv, ctx)
1517 ctx->vif = NULL;
1518 priv->is_open = 0;
1519
1520 /*
1521 * __iwl_down() will clear the BT status variables,
1522 * which is correct, but when we restart we really
1523 * want to keep them so restore them afterwards.
1524 *
1525 * The restart process will later pick them up and
1526 * re-configure the hw when we reconfigure the BT
1527 * command.
1528 */
1529 bt_full_concurrent = priv->bt_full_concurrent;
1530 bt_ci_compliance = priv->bt_ci_compliance;
1531 bt_load = priv->bt_traffic_load;
1532 bt_status = priv->bt_status;
1533 bt_is_sco = priv->bt_is_sco;
1534
1535 __iwl_down(priv);
1536
1537 priv->bt_full_concurrent = bt_full_concurrent;
1538 priv->bt_ci_compliance = bt_ci_compliance;
1539 priv->bt_traffic_load = bt_load;
1540 priv->bt_status = bt_status;
1541 priv->bt_is_sco = bt_is_sco;
1542 }
1543
1544 static void iwl_bg_restart(struct work_struct *data)
1545 {
1546 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1547
1548 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1549 return;
1550
1551 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1552 mutex_lock(&priv->shrd->mutex);
1553 iwlagn_prepare_restart(priv);
1554 mutex_unlock(&priv->shrd->mutex);
1555 iwl_cancel_deferred_work(priv);
1556 ieee80211_restart_hw(priv->hw);
1557 } else {
1558 WARN_ON(1);
1559 }
1560 }
1561
1562 /*****************************************************************************
1563 *
1564 * mac80211 entry point functions
1565 *
1566 *****************************************************************************/
1567
1568 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1569 {
1570 .max = 1,
1571 .types = BIT(NL80211_IFTYPE_STATION),
1572 },
1573 {
1574 .max = 1,
1575 .types = BIT(NL80211_IFTYPE_AP),
1576 },
1577 };
1578
1579 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1580 {
1581 .max = 2,
1582 .types = BIT(NL80211_IFTYPE_STATION),
1583 },
1584 };
1585
1586 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1587 {
1588 .max = 1,
1589 .types = BIT(NL80211_IFTYPE_STATION),
1590 },
1591 {
1592 .max = 1,
1593 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1594 BIT(NL80211_IFTYPE_AP),
1595 },
1596 };
1597
1598 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1599 {
1600 .max = 2,
1601 .types = BIT(NL80211_IFTYPE_STATION),
1602 },
1603 {
1604 .max = 1,
1605 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1606 },
1607 };
1608
1609 static const struct ieee80211_iface_combination
1610 iwlagn_iface_combinations_dualmode[] = {
1611 { .num_different_channels = 1,
1612 .max_interfaces = 2,
1613 .beacon_int_infra_match = true,
1614 .limits = iwlagn_sta_ap_limits,
1615 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1616 },
1617 { .num_different_channels = 1,
1618 .max_interfaces = 2,
1619 .limits = iwlagn_2sta_limits,
1620 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1621 },
1622 };
1623
1624 static const struct ieee80211_iface_combination
1625 iwlagn_iface_combinations_p2p[] = {
1626 { .num_different_channels = 1,
1627 .max_interfaces = 2,
1628 .beacon_int_infra_match = true,
1629 .limits = iwlagn_p2p_sta_go_limits,
1630 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1631 },
1632 { .num_different_channels = 1,
1633 .max_interfaces = 2,
1634 .limits = iwlagn_p2p_2sta_limits,
1635 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1636 },
1637 };
1638
1639 /*
1640 * Not a mac80211 entry point function, but it fits in with all the
1641 * other mac80211 functions grouped here.
1642 */
1643 static int iwlagn_mac_setup_register(struct iwl_priv *priv,
1644 struct iwlagn_ucode_capabilities *capa)
1645 {
1646 int ret;
1647 struct ieee80211_hw *hw = priv->hw;
1648 struct iwl_rxon_context *ctx;
1649
1650 hw->rate_control_algorithm = "iwl-agn-rs";
1651
1652 /* Tell mac80211 our characteristics */
1653 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1654 IEEE80211_HW_AMPDU_AGGREGATION |
1655 IEEE80211_HW_NEED_DTIM_PERIOD |
1656 IEEE80211_HW_SPECTRUM_MGMT |
1657 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1658
1659 /*
1660 * Including the following line will crash some AP's. This
1661 * workaround removes the stimulus which causes the crash until
1662 * the AP software can be fixed.
1663 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1664 */
1665
1666 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1667 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1668
1669 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1670 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1671 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1672
1673 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1674 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1675
1676 hw->sta_data_size = sizeof(struct iwl_station_priv);
1677 hw->vif_data_size = sizeof(struct iwl_vif_priv);
1678
1679 for_each_context(priv, ctx) {
1680 hw->wiphy->interface_modes |= ctx->interface_modes;
1681 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1682 }
1683
1684 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1685
1686 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1687 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1688 hw->wiphy->n_iface_combinations =
1689 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1690 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1691 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1692 hw->wiphy->n_iface_combinations =
1693 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1694 }
1695
1696 hw->wiphy->max_remain_on_channel_duration = 1000;
1697
1698 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1699 WIPHY_FLAG_DISABLE_BEACON_HINTS |
1700 WIPHY_FLAG_IBSS_RSN;
1701
1702 if (priv->ucode_wowlan.code.len && device_can_wakeup(bus(priv)->dev)) {
1703 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1704 WIPHY_WOWLAN_DISCONNECT |
1705 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1706 WIPHY_WOWLAN_RFKILL_RELEASE;
1707 if (!iwlagn_mod_params.sw_crypto)
1708 hw->wiphy->wowlan.flags |=
1709 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1710 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1711
1712 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1713 hw->wiphy->wowlan.pattern_min_len =
1714 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1715 hw->wiphy->wowlan.pattern_max_len =
1716 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1717 }
1718
1719 if (iwlagn_mod_params.power_save)
1720 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1721 else
1722 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1723
1724 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1725 /* we create the 802.11 header and a zero-length SSID element */
1726 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1727
1728 /* Default value; 4 EDCA QOS priorities */
1729 hw->queues = 4;
1730
1731 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1732
1733 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1734 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1735 &priv->bands[IEEE80211_BAND_2GHZ];
1736 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1737 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1738 &priv->bands[IEEE80211_BAND_5GHZ];
1739
1740 iwl_leds_init(priv);
1741
1742 ret = ieee80211_register_hw(priv->hw);
1743 if (ret) {
1744 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1745 return ret;
1746 }
1747 priv->mac80211_registered = 1;
1748
1749 return 0;
1750 }
1751
1752
1753 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1754 {
1755 struct iwl_priv *priv = hw->priv;
1756 int ret;
1757
1758 IWL_DEBUG_MAC80211(priv, "enter\n");
1759
1760 /* we should be verifying the device is ready to be opened */
1761 mutex_lock(&priv->shrd->mutex);
1762 ret = __iwl_up(priv);
1763 mutex_unlock(&priv->shrd->mutex);
1764 if (ret)
1765 return ret;
1766
1767 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1768
1769 /* Now we should be done, and the READY bit should be set. */
1770 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1771 ret = -EIO;
1772
1773 iwlagn_led_enable(priv);
1774
1775 priv->is_open = 1;
1776 IWL_DEBUG_MAC80211(priv, "leave\n");
1777 return 0;
1778 }
1779
1780 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1781 {
1782 struct iwl_priv *priv = hw->priv;
1783
1784 IWL_DEBUG_MAC80211(priv, "enter\n");
1785
1786 if (!priv->is_open)
1787 return;
1788
1789 priv->is_open = 0;
1790
1791 iwl_down(priv);
1792
1793 flush_workqueue(priv->shrd->workqueue);
1794
1795 /* User space software may expect getting rfkill changes
1796 * even if interface is down */
1797 iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1798 iwl_enable_rfkill_int(priv);
1799
1800 IWL_DEBUG_MAC80211(priv, "leave\n");
1801 }
1802
1803 #ifdef CONFIG_PM_SLEEP
1804 static int iwlagn_send_patterns(struct iwl_priv *priv,
1805 struct cfg80211_wowlan *wowlan)
1806 {
1807 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1808 struct iwl_host_cmd cmd = {
1809 .id = REPLY_WOWLAN_PATTERNS,
1810 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1811 .flags = CMD_SYNC,
1812 };
1813 int i, err;
1814
1815 if (!wowlan->n_patterns)
1816 return 0;
1817
1818 cmd.len[0] = sizeof(*pattern_cmd) +
1819 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1820
1821 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1822 if (!pattern_cmd)
1823 return -ENOMEM;
1824
1825 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1826
1827 for (i = 0; i < wowlan->n_patterns; i++) {
1828 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1829
1830 memcpy(&pattern_cmd->patterns[i].mask,
1831 wowlan->patterns[i].mask, mask_len);
1832 memcpy(&pattern_cmd->patterns[i].pattern,
1833 wowlan->patterns[i].pattern,
1834 wowlan->patterns[i].pattern_len);
1835 pattern_cmd->patterns[i].mask_size = mask_len;
1836 pattern_cmd->patterns[i].pattern_size =
1837 wowlan->patterns[i].pattern_len;
1838 }
1839
1840 cmd.data[0] = pattern_cmd;
1841 err = iwl_trans_send_cmd(trans(priv), &cmd);
1842 kfree(pattern_cmd);
1843 return err;
1844 }
1845 #endif
1846
1847 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1848 struct ieee80211_vif *vif,
1849 struct cfg80211_gtk_rekey_data *data)
1850 {
1851 struct iwl_priv *priv = hw->priv;
1852
1853 if (iwlagn_mod_params.sw_crypto)
1854 return;
1855
1856 IWL_DEBUG_MAC80211(priv, "enter\n");
1857 mutex_lock(&priv->shrd->mutex);
1858
1859 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1860 goto out;
1861
1862 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
1863 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
1864 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
1865 priv->have_rekey_data = true;
1866
1867 out:
1868 mutex_unlock(&priv->shrd->mutex);
1869 IWL_DEBUG_MAC80211(priv, "leave\n");
1870 }
1871
1872 struct wowlan_key_data {
1873 struct iwl_rxon_context *ctx;
1874 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
1875 struct iwlagn_wowlan_tkip_params_cmd *tkip;
1876 const u8 *bssid;
1877 bool error, use_rsc_tsc, use_tkip;
1878 };
1879
1880 #ifdef CONFIG_PM_SLEEP
1881 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
1882 {
1883 int i;
1884
1885 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
1886 out[i] = cpu_to_le16(p1k[i]);
1887 }
1888
1889 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
1890 struct ieee80211_vif *vif,
1891 struct ieee80211_sta *sta,
1892 struct ieee80211_key_conf *key,
1893 void *_data)
1894 {
1895 struct iwl_priv *priv = hw->priv;
1896 struct wowlan_key_data *data = _data;
1897 struct iwl_rxon_context *ctx = data->ctx;
1898 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
1899 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
1900 struct iwlagn_p1k_cache *rx_p1ks;
1901 u8 *rx_mic_key;
1902 struct ieee80211_key_seq seq;
1903 u32 cur_rx_iv32 = 0;
1904 u16 p1k[IWLAGN_P1K_SIZE];
1905 int ret, i;
1906
1907 mutex_lock(&priv->shrd->mutex);
1908
1909 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1910 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
1911 !sta && !ctx->key_mapping_keys)
1912 ret = iwl_set_default_wep_key(priv, ctx, key);
1913 else
1914 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
1915
1916 if (ret) {
1917 IWL_ERR(priv, "Error setting key during suspend!\n");
1918 data->error = true;
1919 }
1920
1921 switch (key->cipher) {
1922 case WLAN_CIPHER_SUITE_TKIP:
1923 if (sta) {
1924 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
1925 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
1926
1927 rx_p1ks = data->tkip->rx_uni;
1928
1929 ieee80211_get_key_tx_seq(key, &seq);
1930 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
1931 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
1932
1933 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1934 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1935
1936 memcpy(data->tkip->mic_keys.tx,
1937 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1938 IWLAGN_MIC_KEY_SIZE);
1939
1940 rx_mic_key = data->tkip->mic_keys.rx_unicast;
1941 } else {
1942 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1943 rx_p1ks = data->tkip->rx_multi;
1944 rx_mic_key = data->tkip->mic_keys.rx_mcast;
1945 }
1946
1947 /*
1948 * For non-QoS this relies on the fact that both the uCode and
1949 * mac80211 use TID 0 (as they need to to avoid replay attacks)
1950 * for checking the IV in the frames.
1951 */
1952 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1953 ieee80211_get_key_rx_seq(key, i, &seq);
1954 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1955 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1956 /* wrapping isn't allowed, AP must rekey */
1957 if (seq.tkip.iv32 > cur_rx_iv32)
1958 cur_rx_iv32 = seq.tkip.iv32;
1959 }
1960
1961 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1962 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1963 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1964 cur_rx_iv32 + 1, p1k);
1965 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1966
1967 memcpy(rx_mic_key,
1968 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1969 IWLAGN_MIC_KEY_SIZE);
1970
1971 data->use_tkip = true;
1972 data->use_rsc_tsc = true;
1973 break;
1974 case WLAN_CIPHER_SUITE_CCMP:
1975 if (sta) {
1976 u8 *pn = seq.ccmp.pn;
1977
1978 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1979 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1980
1981 ieee80211_get_key_tx_seq(key, &seq);
1982 aes_tx_sc->pn = cpu_to_le64(
1983 (u64)pn[5] |
1984 ((u64)pn[4] << 8) |
1985 ((u64)pn[3] << 16) |
1986 ((u64)pn[2] << 24) |
1987 ((u64)pn[1] << 32) |
1988 ((u64)pn[0] << 40));
1989 } else
1990 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1991
1992 /*
1993 * For non-QoS this relies on the fact that both the uCode and
1994 * mac80211 use TID 0 for checking the IV in the frames.
1995 */
1996 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1997 u8 *pn = seq.ccmp.pn;
1998
1999 ieee80211_get_key_rx_seq(key, i, &seq);
2000 aes_sc->pn = cpu_to_le64(
2001 (u64)pn[5] |
2002 ((u64)pn[4] << 8) |
2003 ((u64)pn[3] << 16) |
2004 ((u64)pn[2] << 24) |
2005 ((u64)pn[1] << 32) |
2006 ((u64)pn[0] << 40));
2007 }
2008 data->use_rsc_tsc = true;
2009 break;
2010 }
2011
2012 mutex_unlock(&priv->shrd->mutex);
2013 }
2014
2015 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2016 struct cfg80211_wowlan *wowlan)
2017 {
2018 struct iwl_priv *priv = hw->priv;
2019 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2020 struct iwl_rxon_cmd rxon;
2021 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2022 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2023 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2024 struct wowlan_key_data key_data = {
2025 .ctx = ctx,
2026 .bssid = ctx->active.bssid_addr,
2027 .use_rsc_tsc = false,
2028 .tkip = &tkip_cmd,
2029 .use_tkip = false,
2030 };
2031 int ret, i;
2032 u16 seq;
2033
2034 if (WARN_ON(!wowlan))
2035 return -EINVAL;
2036
2037 IWL_DEBUG_MAC80211(priv, "enter\n");
2038 mutex_lock(&priv->shrd->mutex);
2039
2040 /* Don't attempt WoWLAN when not associated, tear down instead. */
2041 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2042 !iwl_is_associated_ctx(ctx)) {
2043 ret = 1;
2044 goto out;
2045 }
2046
2047 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2048 if (!key_data.rsc_tsc) {
2049 ret = -ENOMEM;
2050 goto out;
2051 }
2052
2053 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2054
2055 /*
2056 * We know the last used seqno, and the uCode expects to know that
2057 * one, it will increment before TX.
2058 */
2059 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2060 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2061
2062 /*
2063 * For QoS counters, we store the one to use next, so subtract 0x10
2064 * since the uCode will add 0x10 before using the value.
2065 */
2066 for (i = 0; i < 8; i++) {
2067 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2068 seq -= 0x10;
2069 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2070 }
2071
2072 if (wowlan->disconnect)
2073 wakeup_filter_cmd.enabled |=
2074 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2075 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2076 if (wowlan->magic_pkt)
2077 wakeup_filter_cmd.enabled |=
2078 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2079 if (wowlan->gtk_rekey_failure)
2080 wakeup_filter_cmd.enabled |=
2081 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2082 if (wowlan->eap_identity_req)
2083 wakeup_filter_cmd.enabled |=
2084 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2085 if (wowlan->four_way_handshake)
2086 wakeup_filter_cmd.enabled |=
2087 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2088 if (wowlan->rfkill_release)
2089 wakeup_filter_cmd.enabled |=
2090 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2091 if (wowlan->n_patterns)
2092 wakeup_filter_cmd.enabled |=
2093 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2094
2095 iwl_scan_cancel_timeout(priv, 200);
2096
2097 memcpy(&rxon, &ctx->active, sizeof(rxon));
2098
2099 iwl_trans_stop_device(trans(priv));
2100
2101 priv->shrd->wowlan = true;
2102
2103 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2104 IWL_UCODE_WOWLAN);
2105 if (ret)
2106 goto error;
2107
2108 /* now configure WoWLAN ucode */
2109 ret = iwl_alive_start(priv);
2110 if (ret)
2111 goto error;
2112
2113 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2114 ret = iwlagn_commit_rxon(priv, ctx);
2115 if (ret)
2116 goto error;
2117
2118 ret = iwl_power_update_mode(priv, true);
2119 if (ret)
2120 goto error;
2121
2122 if (!iwlagn_mod_params.sw_crypto) {
2123 /* mark all keys clear */
2124 priv->ucode_key_table = 0;
2125 ctx->key_mapping_keys = 0;
2126
2127 /*
2128 * This needs to be unlocked due to lock ordering
2129 * constraints. Since we're in the suspend path
2130 * that isn't really a problem though.
2131 */
2132 mutex_unlock(&priv->shrd->mutex);
2133 ieee80211_iter_keys(priv->hw, ctx->vif,
2134 iwlagn_wowlan_program_keys,
2135 &key_data);
2136 mutex_lock(&priv->shrd->mutex);
2137 if (key_data.error) {
2138 ret = -EIO;
2139 goto error;
2140 }
2141
2142 if (key_data.use_rsc_tsc) {
2143 struct iwl_host_cmd rsc_tsc_cmd = {
2144 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2145 .flags = CMD_SYNC,
2146 .data[0] = key_data.rsc_tsc,
2147 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2148 .len[0] = sizeof(*key_data.rsc_tsc),
2149 };
2150
2151 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2152 if (ret)
2153 goto error;
2154 }
2155
2156 if (key_data.use_tkip) {
2157 ret = iwl_trans_send_cmd_pdu(trans(priv),
2158 REPLY_WOWLAN_TKIP_PARAMS,
2159 CMD_SYNC, sizeof(tkip_cmd),
2160 &tkip_cmd);
2161 if (ret)
2162 goto error;
2163 }
2164
2165 if (priv->have_rekey_data) {
2166 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2167 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2168 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2169 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2170 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2171 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2172
2173 ret = iwl_trans_send_cmd_pdu(trans(priv),
2174 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2175 CMD_SYNC, sizeof(kek_kck_cmd),
2176 &kek_kck_cmd);
2177 if (ret)
2178 goto error;
2179 }
2180 }
2181
2182 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2183 CMD_SYNC, sizeof(wakeup_filter_cmd),
2184 &wakeup_filter_cmd);
2185 if (ret)
2186 goto error;
2187
2188 ret = iwlagn_send_patterns(priv, wowlan);
2189 if (ret)
2190 goto error;
2191
2192 device_set_wakeup_enable(bus(priv)->dev, true);
2193
2194 /* Now let the ucode operate on its own */
2195 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2196 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2197
2198 goto out;
2199
2200 error:
2201 priv->shrd->wowlan = false;
2202 iwlagn_prepare_restart(priv);
2203 ieee80211_restart_hw(priv->hw);
2204 out:
2205 mutex_unlock(&priv->shrd->mutex);
2206 kfree(key_data.rsc_tsc);
2207 IWL_DEBUG_MAC80211(priv, "leave\n");
2208
2209 return ret;
2210 }
2211
2212 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2213 {
2214 struct iwl_priv *priv = hw->priv;
2215 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2216 struct ieee80211_vif *vif;
2217 unsigned long flags;
2218 u32 base, status = 0xffffffff;
2219 int ret = -EIO;
2220
2221 IWL_DEBUG_MAC80211(priv, "enter\n");
2222 mutex_lock(&priv->shrd->mutex);
2223
2224 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2225 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2226
2227 base = priv->device_pointers.error_event_table;
2228 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2229 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2230 ret = iwl_grab_nic_access_silent(bus(priv));
2231 if (ret == 0) {
2232 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2233 status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2234 iwl_release_nic_access(bus(priv));
2235 }
2236 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2237
2238 #ifdef CONFIG_IWLWIFI_DEBUGFS
2239 if (ret == 0) {
2240 if (!priv->wowlan_sram)
2241 priv->wowlan_sram =
2242 kzalloc(priv->ucode_wowlan.data.len,
2243 GFP_KERNEL);
2244
2245 if (priv->wowlan_sram)
2246 _iwl_read_targ_mem_words(
2247 bus(priv), 0x800000, priv->wowlan_sram,
2248 priv->ucode_wowlan.data.len / 4);
2249 }
2250 #endif
2251 }
2252
2253 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2254 vif = ctx->vif;
2255
2256 priv->shrd->wowlan = false;
2257
2258 device_set_wakeup_enable(bus(priv)->dev, false);
2259
2260 iwlagn_prepare_restart(priv);
2261
2262 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2263 iwl_connection_init_rx_config(priv, ctx);
2264 iwlagn_set_rxon_chain(priv, ctx);
2265
2266 mutex_unlock(&priv->shrd->mutex);
2267 IWL_DEBUG_MAC80211(priv, "leave\n");
2268
2269 ieee80211_resume_disconnect(vif);
2270
2271 return 1;
2272 }
2273 #endif
2274
2275 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2276 {
2277 struct iwl_priv *priv = hw->priv;
2278
2279 IWL_DEBUG_MACDUMP(priv, "enter\n");
2280
2281 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2282 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2283
2284 if (iwlagn_tx_skb(priv, skb))
2285 dev_kfree_skb_any(skb);
2286
2287 IWL_DEBUG_MACDUMP(priv, "leave\n");
2288 }
2289
2290 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2291 struct ieee80211_vif *vif,
2292 struct ieee80211_key_conf *keyconf,
2293 struct ieee80211_sta *sta,
2294 u32 iv32, u16 *phase1key)
2295 {
2296 struct iwl_priv *priv = hw->priv;
2297
2298 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2299 }
2300
2301 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2302 struct ieee80211_vif *vif,
2303 struct ieee80211_sta *sta,
2304 struct ieee80211_key_conf *key)
2305 {
2306 struct iwl_priv *priv = hw->priv;
2307 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2308 struct iwl_rxon_context *ctx = vif_priv->ctx;
2309 int ret;
2310 bool is_default_wep_key = false;
2311
2312 IWL_DEBUG_MAC80211(priv, "enter\n");
2313
2314 if (iwlagn_mod_params.sw_crypto) {
2315 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2316 return -EOPNOTSUPP;
2317 }
2318
2319 switch (key->cipher) {
2320 case WLAN_CIPHER_SUITE_TKIP:
2321 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2322 /* fall through */
2323 case WLAN_CIPHER_SUITE_CCMP:
2324 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2325 break;
2326 default:
2327 break;
2328 }
2329
2330 /*
2331 * We could program these keys into the hardware as well, but we
2332 * don't expect much multicast traffic in IBSS and having keys
2333 * for more stations is probably more useful.
2334 *
2335 * Mark key TX-only and return 0.
2336 */
2337 if (vif->type == NL80211_IFTYPE_ADHOC &&
2338 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2339 key->hw_key_idx = WEP_INVALID_OFFSET;
2340 return 0;
2341 }
2342
2343 /* If they key was TX-only, accept deletion */
2344 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2345 return 0;
2346
2347 mutex_lock(&priv->shrd->mutex);
2348 iwl_scan_cancel_timeout(priv, 100);
2349
2350 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2351
2352 /*
2353 * If we are getting WEP group key and we didn't receive any key mapping
2354 * so far, we are in legacy wep mode (group key only), otherwise we are
2355 * in 1X mode.
2356 * In legacy wep mode, we use another host command to the uCode.
2357 */
2358 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2359 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2360 if (cmd == SET_KEY)
2361 is_default_wep_key = !ctx->key_mapping_keys;
2362 else
2363 is_default_wep_key =
2364 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2365 }
2366
2367
2368 switch (cmd) {
2369 case SET_KEY:
2370 if (is_default_wep_key) {
2371 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2372 break;
2373 }
2374 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2375 if (ret) {
2376 /*
2377 * can't add key for RX, but we don't need it
2378 * in the device for TX so still return 0
2379 */
2380 ret = 0;
2381 key->hw_key_idx = WEP_INVALID_OFFSET;
2382 }
2383
2384 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2385 break;
2386 case DISABLE_KEY:
2387 if (is_default_wep_key)
2388 ret = iwl_remove_default_wep_key(priv, ctx, key);
2389 else
2390 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2391
2392 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2393 break;
2394 default:
2395 ret = -EINVAL;
2396 }
2397
2398 mutex_unlock(&priv->shrd->mutex);
2399 IWL_DEBUG_MAC80211(priv, "leave\n");
2400
2401 return ret;
2402 }
2403
2404 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2405 struct ieee80211_vif *vif,
2406 enum ieee80211_ampdu_mlme_action action,
2407 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2408 u8 buf_size)
2409 {
2410 struct iwl_priv *priv = hw->priv;
2411 int ret = -EINVAL;
2412 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2413 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
2414
2415 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2416 sta->addr, tid);
2417
2418 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2419 return -EACCES;
2420
2421 IWL_DEBUG_MAC80211(priv, "enter\n");
2422 mutex_lock(&priv->shrd->mutex);
2423
2424 switch (action) {
2425 case IEEE80211_AMPDU_RX_START:
2426 IWL_DEBUG_HT(priv, "start Rx\n");
2427 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2428 break;
2429 case IEEE80211_AMPDU_RX_STOP:
2430 IWL_DEBUG_HT(priv, "stop Rx\n");
2431 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2432 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2433 ret = 0;
2434 break;
2435 case IEEE80211_AMPDU_TX_START:
2436 IWL_DEBUG_HT(priv, "start Tx\n");
2437 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2438 break;
2439 case IEEE80211_AMPDU_TX_STOP:
2440 IWL_DEBUG_HT(priv, "stop Tx\n");
2441 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2442 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2443 priv->agg_tids_count--;
2444 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2445 priv->agg_tids_count);
2446 }
2447 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2448 ret = 0;
2449 if (!priv->agg_tids_count && priv->cfg->ht_params &&
2450 priv->cfg->ht_params->use_rts_for_aggregation) {
2451 /*
2452 * switch off RTS/CTS if it was previously enabled
2453 */
2454 sta_priv->lq_sta.lq.general_params.flags &=
2455 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2456 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2457 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2458 }
2459 break;
2460 case IEEE80211_AMPDU_TX_OPERATIONAL:
2461 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2462
2463 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
2464 tid, buf_size);
2465
2466 /*
2467 * If the limit is 0, then it wasn't initialised yet,
2468 * use the default. We can do that since we take the
2469 * minimum below, and we don't want to go above our
2470 * default due to hardware restrictions.
2471 */
2472 if (sta_priv->max_agg_bufsize == 0)
2473 sta_priv->max_agg_bufsize =
2474 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2475
2476 /*
2477 * Even though in theory the peer could have different
2478 * aggregation reorder buffer sizes for different sessions,
2479 * our ucode doesn't allow for that and has a global limit
2480 * for each station. Therefore, use the minimum of all the
2481 * aggregation sessions and our default value.
2482 */
2483 sta_priv->max_agg_bufsize =
2484 min(sta_priv->max_agg_bufsize, buf_size);
2485
2486 if (priv->cfg->ht_params &&
2487 priv->cfg->ht_params->use_rts_for_aggregation) {
2488 /*
2489 * switch to RTS/CTS if it is the prefer protection
2490 * method for HT traffic
2491 */
2492
2493 sta_priv->lq_sta.lq.general_params.flags |=
2494 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2495 }
2496 priv->agg_tids_count++;
2497 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2498 priv->agg_tids_count);
2499
2500 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2501 sta_priv->max_agg_bufsize;
2502
2503 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2504 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2505
2506 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2507 sta->addr, tid);
2508 ret = 0;
2509 break;
2510 }
2511 mutex_unlock(&priv->shrd->mutex);
2512 IWL_DEBUG_MAC80211(priv, "leave\n");
2513 return ret;
2514 }
2515
2516 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2517 struct ieee80211_vif *vif,
2518 struct ieee80211_sta *sta)
2519 {
2520 struct iwl_priv *priv = hw->priv;
2521 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2522 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2523 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2524 int ret = 0;
2525 u8 sta_id;
2526
2527 IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n",
2528 sta->addr);
2529 mutex_lock(&priv->shrd->mutex);
2530 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2531 sta->addr);
2532 sta_priv->sta_id = IWL_INVALID_STATION;
2533
2534 atomic_set(&sta_priv->pending_frames, 0);
2535 if (vif->type == NL80211_IFTYPE_AP)
2536 sta_priv->client = true;
2537
2538 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2539 is_ap, sta, &sta_id);
2540 if (ret) {
2541 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2542 sta->addr, ret);
2543 /* Should we return success if return code is EEXIST ? */
2544 goto out;
2545 }
2546
2547 sta_priv->sta_id = sta_id;
2548
2549 /* Initialize rate scaling */
2550 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2551 sta->addr);
2552 iwl_rs_rate_init(priv, sta, sta_id);
2553 out:
2554 mutex_unlock(&priv->shrd->mutex);
2555 IWL_DEBUG_MAC80211(priv, "leave\n");
2556
2557 return ret;
2558 }
2559
2560 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2561 struct ieee80211_channel_switch *ch_switch)
2562 {
2563 struct iwl_priv *priv = hw->priv;
2564 const struct iwl_channel_info *ch_info;
2565 struct ieee80211_conf *conf = &hw->conf;
2566 struct ieee80211_channel *channel = ch_switch->channel;
2567 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2568 /*
2569 * MULTI-FIXME
2570 * When we add support for multiple interfaces, we need to
2571 * revisit this. The channel switch command in the device
2572 * only affects the BSS context, but what does that really
2573 * mean? And what if we get a CSA on the second interface?
2574 * This needs a lot of work.
2575 */
2576 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2577 u16 ch;
2578
2579 IWL_DEBUG_MAC80211(priv, "enter\n");
2580
2581 mutex_lock(&priv->shrd->mutex);
2582
2583 if (iwl_is_rfkill(priv->shrd))
2584 goto out;
2585
2586 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2587 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2588 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2589 goto out;
2590
2591 if (!iwl_is_associated_ctx(ctx))
2592 goto out;
2593
2594 if (!priv->cfg->lib->set_channel_switch)
2595 goto out;
2596
2597 ch = channel->hw_value;
2598 if (le16_to_cpu(ctx->active.channel) == ch)
2599 goto out;
2600
2601 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2602 if (!is_channel_valid(ch_info)) {
2603 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2604 goto out;
2605 }
2606
2607 spin_lock_irq(&priv->shrd->lock);
2608
2609 priv->current_ht_config.smps = conf->smps_mode;
2610
2611 /* Configure HT40 channels */
2612 ctx->ht.enabled = conf_is_ht(conf);
2613 if (ctx->ht.enabled)
2614 iwlagn_config_ht40(conf, ctx);
2615 else
2616 ctx->ht.is_40mhz = false;
2617
2618 if ((le16_to_cpu(ctx->staging.channel) != ch))
2619 ctx->staging.flags = 0;
2620
2621 iwl_set_rxon_channel(priv, channel, ctx);
2622 iwl_set_rxon_ht(priv, ht_conf);
2623 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2624
2625 spin_unlock_irq(&priv->shrd->lock);
2626
2627 iwl_set_rate(priv);
2628 /*
2629 * at this point, staging_rxon has the
2630 * configuration for channel switch
2631 */
2632 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2633 priv->switch_channel = cpu_to_le16(ch);
2634 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2635 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2636 priv->switch_channel = 0;
2637 ieee80211_chswitch_done(ctx->vif, false);
2638 }
2639
2640 out:
2641 mutex_unlock(&priv->shrd->mutex);
2642 IWL_DEBUG_MAC80211(priv, "leave\n");
2643 }
2644
2645 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2646 unsigned int changed_flags,
2647 unsigned int *total_flags,
2648 u64 multicast)
2649 {
2650 struct iwl_priv *priv = hw->priv;
2651 __le32 filter_or = 0, filter_nand = 0;
2652 struct iwl_rxon_context *ctx;
2653
2654 #define CHK(test, flag) do { \
2655 if (*total_flags & (test)) \
2656 filter_or |= (flag); \
2657 else \
2658 filter_nand |= (flag); \
2659 } while (0)
2660
2661 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2662 changed_flags, *total_flags);
2663
2664 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2665 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2666 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2667 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2668
2669 #undef CHK
2670
2671 mutex_lock(&priv->shrd->mutex);
2672
2673 for_each_context(priv, ctx) {
2674 ctx->staging.filter_flags &= ~filter_nand;
2675 ctx->staging.filter_flags |= filter_or;
2676
2677 /*
2678 * Not committing directly because hardware can perform a scan,
2679 * but we'll eventually commit the filter flags change anyway.
2680 */
2681 }
2682
2683 mutex_unlock(&priv->shrd->mutex);
2684
2685 /*
2686 * Receiving all multicast frames is always enabled by the
2687 * default flags setup in iwl_connection_init_rx_config()
2688 * since we currently do not support programming multicast
2689 * filters into the device.
2690 */
2691 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2692 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2693 }
2694
2695 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2696 {
2697 struct iwl_priv *priv = hw->priv;
2698
2699 mutex_lock(&priv->shrd->mutex);
2700 IWL_DEBUG_MAC80211(priv, "enter\n");
2701
2702 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2703 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2704 goto done;
2705 }
2706 if (iwl_is_rfkill(priv->shrd)) {
2707 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2708 goto done;
2709 }
2710
2711 /*
2712 * mac80211 will not push any more frames for transmit
2713 * until the flush is completed
2714 */
2715 if (drop) {
2716 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2717 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2718 IWL_ERR(priv, "flush request fail\n");
2719 goto done;
2720 }
2721 }
2722 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2723 iwl_trans_wait_tx_queue_empty(trans(priv));
2724 done:
2725 mutex_unlock(&priv->shrd->mutex);
2726 IWL_DEBUG_MAC80211(priv, "leave\n");
2727 }
2728
2729 void iwlagn_disable_roc(struct iwl_priv *priv)
2730 {
2731 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2732
2733 lockdep_assert_held(&priv->shrd->mutex);
2734
2735 if (!priv->hw_roc_setup)
2736 return;
2737
2738 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2739 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2740
2741 priv->hw_roc_channel = NULL;
2742
2743 memset(ctx->staging.node_addr, 0, ETH_ALEN);
2744
2745 iwlagn_commit_rxon(priv, ctx);
2746
2747 ctx->is_active = false;
2748 priv->hw_roc_setup = false;
2749 }
2750
2751 static void iwlagn_disable_roc_work(struct work_struct *work)
2752 {
2753 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2754 hw_roc_disable_work.work);
2755
2756 mutex_lock(&priv->shrd->mutex);
2757 iwlagn_disable_roc(priv);
2758 mutex_unlock(&priv->shrd->mutex);
2759 }
2760
2761 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
2762 struct ieee80211_channel *channel,
2763 enum nl80211_channel_type channel_type,
2764 int duration)
2765 {
2766 struct iwl_priv *priv = hw->priv;
2767 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2768 int err = 0;
2769
2770 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2771 return -EOPNOTSUPP;
2772
2773 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2774 return -EOPNOTSUPP;
2775
2776 IWL_DEBUG_MAC80211(priv, "enter\n");
2777 mutex_lock(&priv->shrd->mutex);
2778
2779 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2780 err = -EBUSY;
2781 goto out;
2782 }
2783
2784 priv->hw_roc_channel = channel;
2785 priv->hw_roc_chantype = channel_type;
2786 priv->hw_roc_duration = duration;
2787 priv->hw_roc_start_notified = false;
2788 cancel_delayed_work(&priv->hw_roc_disable_work);
2789
2790 if (!ctx->is_active) {
2791 ctx->is_active = true;
2792 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2793 memcpy(ctx->staging.node_addr,
2794 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2795 ETH_ALEN);
2796 memcpy(ctx->staging.bssid_addr,
2797 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2798 ETH_ALEN);
2799 err = iwlagn_commit_rxon(priv, ctx);
2800 if (err)
2801 goto out;
2802 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2803 RXON_FILTER_PROMISC_MSK |
2804 RXON_FILTER_CTL2HOST_MSK;
2805
2806 err = iwlagn_commit_rxon(priv, ctx);
2807 if (err) {
2808 iwlagn_disable_roc(priv);
2809 goto out;
2810 }
2811 priv->hw_roc_setup = true;
2812 }
2813
2814 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2815 if (err)
2816 iwlagn_disable_roc(priv);
2817
2818 out:
2819 mutex_unlock(&priv->shrd->mutex);
2820 IWL_DEBUG_MAC80211(priv, "leave\n");
2821
2822 return err;
2823 }
2824
2825 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2826 {
2827 struct iwl_priv *priv = hw->priv;
2828
2829 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2830 return -EOPNOTSUPP;
2831
2832 IWL_DEBUG_MAC80211(priv, "enter\n");
2833 mutex_lock(&priv->shrd->mutex);
2834 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2835 iwlagn_disable_roc(priv);
2836 mutex_unlock(&priv->shrd->mutex);
2837 IWL_DEBUG_MAC80211(priv, "leave\n");
2838
2839 return 0;
2840 }
2841
2842 static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw,
2843 struct ieee80211_vif *vif,
2844 const u8 *bssid,
2845 enum ieee80211_tx_sync_type type)
2846 {
2847 struct iwl_priv *priv = hw->priv;
2848 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2849 struct iwl_rxon_context *ctx = vif_priv->ctx;
2850 int ret;
2851 u8 sta_id;
2852
2853 IWL_DEBUG_MAC80211(priv, "enter\n");
2854 mutex_lock(&priv->shrd->mutex);
2855
2856 if (iwl_is_associated_ctx(ctx)) {
2857 ret = 0;
2858 goto out;
2859 }
2860
2861 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2862 ret = -EBUSY;
2863 goto out;
2864 }
2865
2866 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
2867 if (ret)
2868 goto out;
2869
2870 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
2871 ret = -EIO;
2872 goto out_remove_sta;
2873 }
2874
2875 memcpy(ctx->bssid, bssid, ETH_ALEN);
2876 ctx->preauth_bssid = true;
2877
2878 ret = iwlagn_commit_rxon(priv, ctx);
2879
2880 if (ret == 0)
2881 goto out;
2882
2883 out_remove_sta:
2884 iwl_remove_station(priv, sta_id, bssid);
2885 out:
2886 mutex_unlock(&priv->shrd->mutex);
2887 IWL_DEBUG_MAC80211(priv, "leave\n");
2888
2889 return ret;
2890 }
2891
2892 static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw,
2893 struct ieee80211_vif *vif,
2894 const u8 *bssid,
2895 enum ieee80211_tx_sync_type type)
2896 {
2897 struct iwl_priv *priv = hw->priv;
2898 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2899 struct iwl_rxon_context *ctx = vif_priv->ctx;
2900
2901 IWL_DEBUG_MAC80211(priv, "enter\n");
2902 mutex_lock(&priv->shrd->mutex);
2903
2904 if (iwl_is_associated_ctx(ctx))
2905 goto out;
2906
2907 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
2908 ctx->preauth_bssid = false;
2909 /* no need to commit */
2910 out:
2911 mutex_unlock(&priv->shrd->mutex);
2912 IWL_DEBUG_MAC80211(priv, "leave\n");
2913 }
2914
2915 /*****************************************************************************
2916 *
2917 * driver setup and teardown
2918 *
2919 *****************************************************************************/
2920
2921 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2922 {
2923 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2924
2925 init_waitqueue_head(&priv->shrd->wait_command_queue);
2926
2927 INIT_WORK(&priv->restart, iwl_bg_restart);
2928 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2929 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2930 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2931 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2932 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2933 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2934 iwlagn_disable_roc_work);
2935
2936 iwl_setup_scan_deferred_work(priv);
2937
2938 if (priv->cfg->lib->bt_setup_deferred_work)
2939 priv->cfg->lib->bt_setup_deferred_work(priv);
2940
2941 init_timer(&priv->statistics_periodic);
2942 priv->statistics_periodic.data = (unsigned long)priv;
2943 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2944
2945 init_timer(&priv->ucode_trace);
2946 priv->ucode_trace.data = (unsigned long)priv;
2947 priv->ucode_trace.function = iwl_bg_ucode_trace;
2948
2949 init_timer(&priv->watchdog);
2950 priv->watchdog.data = (unsigned long)priv;
2951 priv->watchdog.function = iwl_bg_watchdog;
2952 }
2953
2954 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2955 {
2956 if (priv->cfg->lib->cancel_deferred_work)
2957 priv->cfg->lib->cancel_deferred_work(priv);
2958
2959 cancel_work_sync(&priv->run_time_calib_work);
2960 cancel_work_sync(&priv->beacon_update);
2961
2962 iwl_cancel_scan_deferred_work(priv);
2963
2964 cancel_work_sync(&priv->bt_full_concurrency);
2965 cancel_work_sync(&priv->bt_runtime_config);
2966 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
2967
2968 del_timer_sync(&priv->statistics_periodic);
2969 del_timer_sync(&priv->ucode_trace);
2970 }
2971
2972 static void iwl_init_hw_rates(struct iwl_priv *priv,
2973 struct ieee80211_rate *rates)
2974 {
2975 int i;
2976
2977 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2978 rates[i].bitrate = iwl_rates[i].ieee * 5;
2979 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2980 rates[i].hw_value_short = i;
2981 rates[i].flags = 0;
2982 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2983 /*
2984 * If CCK != 1M then set short preamble rate flag.
2985 */
2986 rates[i].flags |=
2987 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2988 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2989 }
2990 }
2991 }
2992
2993 static int iwl_init_drv(struct iwl_priv *priv)
2994 {
2995 int ret;
2996
2997 spin_lock_init(&priv->shrd->sta_lock);
2998
2999 mutex_init(&priv->shrd->mutex);
3000
3001 priv->ieee_channels = NULL;
3002 priv->ieee_rates = NULL;
3003 priv->band = IEEE80211_BAND_2GHZ;
3004
3005 priv->iw_mode = NL80211_IFTYPE_STATION;
3006 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3007 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3008 priv->agg_tids_count = 0;
3009
3010 /* initialize force reset */
3011 priv->force_reset[IWL_RF_RESET].reset_duration =
3012 IWL_DELAY_NEXT_FORCE_RF_RESET;
3013 priv->force_reset[IWL_FW_RESET].reset_duration =
3014 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3015
3016 priv->rx_statistics_jiffies = jiffies;
3017
3018 /* Choose which receivers/antennas to use */
3019 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3020
3021 iwl_init_scan_params(priv);
3022
3023 /* init bt coex */
3024 if (priv->cfg->bt_params &&
3025 priv->cfg->bt_params->advanced_bt_coexist) {
3026 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3027 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3028 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3029 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3030 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3031 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3032 }
3033
3034 ret = iwl_init_channel_map(priv);
3035 if (ret) {
3036 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3037 goto err;
3038 }
3039
3040 ret = iwl_init_geos(priv);
3041 if (ret) {
3042 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3043 goto err_free_channel_map;
3044 }
3045 iwl_init_hw_rates(priv, priv->ieee_rates);
3046
3047 return 0;
3048
3049 err_free_channel_map:
3050 iwl_free_channel_map(priv);
3051 err:
3052 return ret;
3053 }
3054
3055 static void iwl_uninit_drv(struct iwl_priv *priv)
3056 {
3057 iwl_calib_free_results(priv);
3058 iwl_free_geos(priv);
3059 iwl_free_channel_map(priv);
3060 if (priv->tx_cmd_pool)
3061 kmem_cache_destroy(priv->tx_cmd_pool);
3062 kfree(priv->scan_cmd);
3063 kfree(priv->beacon_cmd);
3064 #ifdef CONFIG_IWLWIFI_DEBUGFS
3065 kfree(priv->wowlan_sram);
3066 #endif
3067 }
3068
3069 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
3070 enum ieee80211_rssi_event rssi_event)
3071 {
3072 struct iwl_priv *priv = hw->priv;
3073
3074 IWL_DEBUG_MAC80211(priv, "enter\n");
3075 mutex_lock(&priv->shrd->mutex);
3076
3077 if (priv->cfg->bt_params &&
3078 priv->cfg->bt_params->advanced_bt_coexist) {
3079 if (rssi_event == RSSI_EVENT_LOW)
3080 priv->bt_enable_pspoll = true;
3081 else if (rssi_event == RSSI_EVENT_HIGH)
3082 priv->bt_enable_pspoll = false;
3083
3084 iwlagn_send_advance_bt_config(priv);
3085 } else {
3086 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3087 "ignoring RSSI callback\n");
3088 }
3089
3090 mutex_unlock(&priv->shrd->mutex);
3091 IWL_DEBUG_MAC80211(priv, "leave\n");
3092 }
3093
3094 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
3095 struct ieee80211_sta *sta, bool set)
3096 {
3097 struct iwl_priv *priv = hw->priv;
3098
3099 queue_work(priv->shrd->workqueue, &priv->beacon_update);
3100
3101 return 0;
3102 }
3103
3104 struct ieee80211_ops iwlagn_hw_ops = {
3105 .tx = iwlagn_mac_tx,
3106 .start = iwlagn_mac_start,
3107 .stop = iwlagn_mac_stop,
3108 #ifdef CONFIG_PM_SLEEP
3109 .suspend = iwlagn_mac_suspend,
3110 .resume = iwlagn_mac_resume,
3111 #endif
3112 .add_interface = iwlagn_mac_add_interface,
3113 .remove_interface = iwlagn_mac_remove_interface,
3114 .change_interface = iwlagn_mac_change_interface,
3115 .config = iwlagn_mac_config,
3116 .configure_filter = iwlagn_configure_filter,
3117 .set_key = iwlagn_mac_set_key,
3118 .update_tkip_key = iwlagn_mac_update_tkip_key,
3119 .set_rekey_data = iwlagn_mac_set_rekey_data,
3120 .conf_tx = iwlagn_mac_conf_tx,
3121 .bss_info_changed = iwlagn_bss_info_changed,
3122 .ampdu_action = iwlagn_mac_ampdu_action,
3123 .hw_scan = iwlagn_mac_hw_scan,
3124 .sta_notify = iwlagn_mac_sta_notify,
3125 .sta_add = iwlagn_mac_sta_add,
3126 .sta_remove = iwlagn_mac_sta_remove,
3127 .channel_switch = iwlagn_mac_channel_switch,
3128 .flush = iwlagn_mac_flush,
3129 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
3130 .remain_on_channel = iwlagn_mac_remain_on_channel,
3131 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
3132 .rssi_callback = iwlagn_mac_rssi_callback,
3133 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
3134 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
3135 .tx_sync = iwlagn_mac_tx_sync,
3136 .finish_tx_sync = iwlagn_mac_finish_tx_sync,
3137 .set_tim = iwlagn_mac_set_tim,
3138 };
3139
3140 static u32 iwl_hw_detect(struct iwl_priv *priv)
3141 {
3142 return iwl_read32(bus(priv), CSR_HW_REV);
3143 }
3144
3145 /* Size of one Rx buffer in host DRAM */
3146 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3147 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3148
3149 static int iwl_set_hw_params(struct iwl_priv *priv)
3150 {
3151 if (iwlagn_mod_params.amsdu_size_8K)
3152 hw_params(priv).rx_page_order =
3153 get_order(IWL_RX_BUF_SIZE_8K);
3154 else
3155 hw_params(priv).rx_page_order =
3156 get_order(IWL_RX_BUF_SIZE_4K);
3157
3158 if (iwlagn_mod_params.disable_11n)
3159 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3160
3161 hw_params(priv).num_ampdu_queues =
3162 priv->cfg->base_params->num_of_ampdu_queues;
3163 hw_params(priv).shadow_reg_enable =
3164 priv->cfg->base_params->shadow_reg_enable;
3165 hw_params(priv).sku = priv->cfg->sku;
3166 hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
3167
3168 /* Device-specific setup */
3169 return priv->cfg->lib->set_hw_params(priv);
3170 }
3171
3172 /* This function both allocates and initializes hw and priv. */
3173 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3174 {
3175 struct iwl_priv *priv;
3176 /* mac80211 allocates memory for this device instance, including
3177 * space for this driver's private structure */
3178 struct ieee80211_hw *hw;
3179
3180 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3181 if (hw == NULL) {
3182 pr_err("%s: Can not allocate network device\n",
3183 cfg->name);
3184 goto out;
3185 }
3186
3187 priv = hw->priv;
3188 priv->hw = hw;
3189
3190 out:
3191 return hw;
3192 }
3193
3194 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3195 struct iwl_cfg *cfg)
3196 {
3197 int err = 0;
3198 struct iwl_priv *priv;
3199 struct ieee80211_hw *hw;
3200 u16 num_mac;
3201 u32 hw_rev;
3202
3203 /************************
3204 * 1. Allocating HW data
3205 ************************/
3206 hw = iwl_alloc_all(cfg);
3207 if (!hw) {
3208 err = -ENOMEM;
3209 goto out;
3210 }
3211
3212 priv = hw->priv;
3213 priv->shrd = &priv->_shrd;
3214 bus->shrd = priv->shrd;
3215 priv->shrd->bus = bus;
3216 priv->shrd->priv = priv;
3217
3218 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3219 if (priv->shrd->trans == NULL) {
3220 err = -ENOMEM;
3221 goto out_free_traffic_mem;
3222 }
3223
3224 /* At this point both hw and priv are allocated. */
3225
3226 SET_IEEE80211_DEV(hw, bus(priv)->dev);
3227
3228 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3229 priv->cfg = cfg;
3230
3231 /* is antenna coupling more than 35dB ? */
3232 priv->bt_ant_couple_ok =
3233 (iwlagn_mod_params.ant_coupling >
3234 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3235 true : false;
3236
3237 /* enable/disable bt channel inhibition */
3238 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3239 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3240 (priv->bt_ch_announce) ? "On" : "Off");
3241
3242 if (iwl_alloc_traffic_mem(priv))
3243 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3244
3245 /* these spin locks will be used in apm_ops.init and EEPROM access
3246 * we should init now
3247 */
3248 spin_lock_init(&bus(priv)->reg_lock);
3249 spin_lock_init(&priv->shrd->lock);
3250
3251 /*
3252 * stop and reset the on-board processor just in case it is in a
3253 * strange state ... like being left stranded by a primary kernel
3254 * and this is now the kdump kernel trying to start up
3255 */
3256 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3257
3258 /***********************
3259 * 3. Read REV register
3260 ***********************/
3261 hw_rev = iwl_hw_detect(priv);
3262 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3263 priv->cfg->name, hw_rev);
3264
3265 err = iwl_trans_request_irq(trans(priv));
3266 if (err)
3267 goto out_free_trans;
3268
3269 if (iwl_trans_prepare_card_hw(trans(priv))) {
3270 err = -EIO;
3271 IWL_WARN(priv, "Failed, HW not ready\n");
3272 goto out_free_trans;
3273 }
3274
3275 /*****************
3276 * 4. Read EEPROM
3277 *****************/
3278 /* Read the EEPROM */
3279 err = iwl_eeprom_init(priv, hw_rev);
3280 if (err) {
3281 IWL_ERR(priv, "Unable to init EEPROM\n");
3282 goto out_free_trans;
3283 }
3284 err = iwl_eeprom_check_version(priv);
3285 if (err)
3286 goto out_free_eeprom;
3287
3288 err = iwl_eeprom_check_sku(priv);
3289 if (err)
3290 goto out_free_eeprom;
3291
3292 /* extract MAC Address */
3293 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3294 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3295 priv->hw->wiphy->addresses = priv->addresses;
3296 priv->hw->wiphy->n_addresses = 1;
3297 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3298 if (num_mac > 1) {
3299 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3300 ETH_ALEN);
3301 priv->addresses[1].addr[5]++;
3302 priv->hw->wiphy->n_addresses++;
3303 }
3304
3305 /************************
3306 * 5. Setup HW constants
3307 ************************/
3308 if (iwl_set_hw_params(priv)) {
3309 err = -ENOENT;
3310 IWL_ERR(priv, "failed to set hw parameters\n");
3311 goto out_free_eeprom;
3312 }
3313
3314 /*******************
3315 * 6. Setup priv
3316 *******************/
3317
3318 err = iwl_init_drv(priv);
3319 if (err)
3320 goto out_free_eeprom;
3321 /* At this point both hw and priv are initialized. */
3322
3323 /********************
3324 * 7. Setup services
3325 ********************/
3326 iwl_setup_deferred_work(priv);
3327 iwl_setup_rx_handlers(priv);
3328 iwl_testmode_init(priv);
3329
3330 /*********************************************
3331 * 8. Enable interrupts
3332 *********************************************/
3333
3334 iwl_enable_rfkill_int(priv);
3335
3336 /* If platform's RF_KILL switch is NOT set to KILL */
3337 if (iwl_read32(bus(priv),
3338 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3339 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3340 else
3341 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3342
3343 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3344 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3345
3346 iwl_power_initialize(priv);
3347 iwl_tt_initialize(priv);
3348
3349 init_completion(&priv->firmware_loading_complete);
3350
3351 err = iwl_request_firmware(priv, true);
3352 if (err)
3353 goto out_destroy_workqueue;
3354
3355 return 0;
3356
3357 out_destroy_workqueue:
3358 destroy_workqueue(priv->shrd->workqueue);
3359 priv->shrd->workqueue = NULL;
3360 iwl_uninit_drv(priv);
3361 out_free_eeprom:
3362 iwl_eeprom_free(priv);
3363 out_free_trans:
3364 iwl_trans_free(trans(priv));
3365 out_free_traffic_mem:
3366 iwl_free_traffic_mem(priv);
3367 ieee80211_free_hw(priv->hw);
3368 out:
3369 return err;
3370 }
3371
3372 void __devexit iwl_remove(struct iwl_priv * priv)
3373 {
3374 wait_for_completion(&priv->firmware_loading_complete);
3375
3376 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3377
3378 iwl_dbgfs_unregister(priv);
3379
3380 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
3381 * to be called and iwl_down since we are removing the device
3382 * we need to set STATUS_EXIT_PENDING bit.
3383 */
3384 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3385
3386 iwl_testmode_cleanup(priv);
3387 iwl_leds_exit(priv);
3388
3389 if (priv->mac80211_registered) {
3390 ieee80211_unregister_hw(priv->hw);
3391 priv->mac80211_registered = 0;
3392 }
3393
3394 iwl_tt_exit(priv);
3395
3396 /*This will stop the queues, move the device to low power state */
3397 iwl_trans_stop_device(trans(priv));
3398
3399 iwl_dealloc_ucode(priv);
3400
3401 iwl_eeprom_free(priv);
3402
3403 /*netif_stop_queue(dev); */
3404 flush_workqueue(priv->shrd->workqueue);
3405
3406 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
3407 * priv->shrd->workqueue... so we can't take down the workqueue
3408 * until now... */
3409 destroy_workqueue(priv->shrd->workqueue);
3410 priv->shrd->workqueue = NULL;
3411 iwl_free_traffic_mem(priv);
3412
3413 iwl_trans_free(trans(priv));
3414
3415 iwl_uninit_drv(priv);
3416
3417 dev_kfree_skb(priv->beacon_skb);
3418
3419 ieee80211_free_hw(priv->hw);
3420 }
3421
3422
3423 /*****************************************************************************
3424 *
3425 * driver and module entry point
3426 *
3427 *****************************************************************************/
3428 static int __init iwl_init(void)
3429 {
3430
3431 int ret;
3432 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3433 pr_info(DRV_COPYRIGHT "\n");
3434
3435 ret = iwlagn_rate_control_register();
3436 if (ret) {
3437 pr_err("Unable to register rate control algorithm: %d\n", ret);
3438 return ret;
3439 }
3440
3441 ret = iwl_pci_register_driver();
3442
3443 if (ret)
3444 goto error_register;
3445 return ret;
3446
3447 error_register:
3448 iwlagn_rate_control_unregister();
3449 return ret;
3450 }
3451
3452 static void __exit iwl_exit(void)
3453 {
3454 iwl_pci_unregister_driver();
3455 iwlagn_rate_control_unregister();
3456 }
3457
3458 module_exit(iwl_exit);
3459 module_init(iwl_init);
3460
3461 #ifdef CONFIG_IWLWIFI_DEBUG
3462 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3463 S_IRUGO | S_IWUSR);
3464 MODULE_PARM_DESC(debug, "debug output mask");
3465 #endif
3466
3467 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3468 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3469 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3470 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3471 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3472 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3473 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3474 int, S_IRUGO);
3475 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3476 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3477 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3478
3479 module_param_named(ucode_alternative,
3480 iwlagn_mod_params.wanted_ucode_alternative,
3481 int, S_IRUGO);
3482 MODULE_PARM_DESC(ucode_alternative,
3483 "specify ucode alternative to use from ucode file");
3484
3485 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3486 int, S_IRUGO);
3487 MODULE_PARM_DESC(antenna_coupling,
3488 "specify antenna coupling in dB (defualt: 0 dB)");
3489
3490 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3491 bool, S_IRUGO);
3492 MODULE_PARM_DESC(bt_ch_inhibition,
3493 "Enable BT channel inhibition (default: enable)");
3494
3495 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3496 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3497
3498 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3499 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3500
3501 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3502 MODULE_PARM_DESC(wd_disable,
3503 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3504
3505 /*
3506 * set bt_coex_active to true, uCode will do kill/defer
3507 * every time the priority line is asserted (BT is sending signals on the
3508 * priority line in the PCIx).
3509 * set bt_coex_active to false, uCode will ignore the BT activity and
3510 * perform the normal operation
3511 *
3512 * User might experience transmit issue on some platform due to WiFi/BT
3513 * co-exist problem. The possible behaviors are:
3514 * Able to scan and finding all the available AP
3515 * Not able to associate with any AP
3516 * On those platforms, WiFi communication can be restored by set
3517 * "bt_coex_active" module parameter to "false"
3518 *
3519 * default: bt_coex_active = true (BT_COEX_ENABLE)
3520 */
3521 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3522 bool, S_IRUGO);
3523 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3524
3525 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3526 MODULE_PARM_DESC(led_mode, "0=system default, "
3527 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3528
3529 module_param_named(power_save, iwlagn_mod_params.power_save,
3530 bool, S_IRUGO);
3531 MODULE_PARM_DESC(power_save,
3532 "enable WiFi power management (default: disable)");
3533
3534 module_param_named(power_level, iwlagn_mod_params.power_level,
3535 int, S_IRUGO);
3536 MODULE_PARM_DESC(power_level,
3537 "default power save level (range from 1 - 5, default: 1)");
3538
3539 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3540 bool, S_IRUGO);
3541 MODULE_PARM_DESC(auto_agg,
3542 "enable agg w/o check traffic load (default: enable)");
3543
3544 /*
3545 * For now, keep using power level 1 instead of automatically
3546 * adjusting ...
3547 */
3548 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3549 bool, S_IRUGO);
3550 MODULE_PARM_DESC(no_sleep_autoadjust,
3551 "don't automatically adjust sleep level "
3552 "according to maximum network latency (default: true)");
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