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iwlagn: rename all the mac80211 callback functions
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob6c57199b041fee050a663fd6f6461d4f51d9aa19
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <linux/if_arp.h>
41
42 #include <net/mac80211.h>
43
44 #include <asm/div64.h>
45
46 #include "iwl-eeprom.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-helpers.h"
51 #include "iwl-sta.h"
52 #include "iwl-agn-calib.h"
53 #include "iwl-agn.h"
54 #include "iwl-shared.h"
55 #include "iwl-bus.h"
56 #include "iwl-trans.h"
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 */
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #define DRV_VERSION IWLWIFI_VERSION VD
76
77
78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
79 MODULE_VERSION(DRV_VERSION);
80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
81 MODULE_LICENSE("GPL");
82 MODULE_ALIAS("iwlagn");
83
84 void iwl_update_chain_flags(struct iwl_priv *priv)
85 {
86 struct iwl_rxon_context *ctx;
87
88 for_each_context(priv, ctx) {
89 iwlagn_set_rxon_chain(priv, ctx);
90 if (ctx->active.rx_chain != ctx->staging.rx_chain)
91 iwlagn_commit_rxon(priv, ctx);
92 }
93 }
94
95 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
96 static void iwl_set_beacon_tim(struct iwl_priv *priv,
97 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
98 u8 *beacon, u32 frame_size)
99 {
100 u16 tim_idx;
101 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
102
103 /*
104 * The index is relative to frame start but we start looking at the
105 * variable-length part of the beacon.
106 */
107 tim_idx = mgmt->u.beacon.variable - beacon;
108
109 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
110 while ((tim_idx < (frame_size - 2)) &&
111 (beacon[tim_idx] != WLAN_EID_TIM))
112 tim_idx += beacon[tim_idx+1] + 2;
113
114 /* If TIM field was found, set variables */
115 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
116 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
117 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
118 } else
119 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
120 }
121
122 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
123 {
124 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
125 struct iwl_host_cmd cmd = {
126 .id = REPLY_TX_BEACON,
127 .flags = CMD_SYNC,
128 };
129 struct ieee80211_tx_info *info;
130 u32 frame_size;
131 u32 rate_flags;
132 u32 rate;
133
134 /*
135 * We have to set up the TX command, the TX Beacon command, and the
136 * beacon contents.
137 */
138
139 lockdep_assert_held(&priv->shrd->mutex);
140
141 if (!priv->beacon_ctx) {
142 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
143 return 0;
144 }
145
146 if (WARN_ON(!priv->beacon_skb))
147 return -EINVAL;
148
149 /* Allocate beacon command */
150 if (!priv->beacon_cmd)
151 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
152 tx_beacon_cmd = priv->beacon_cmd;
153 if (!tx_beacon_cmd)
154 return -ENOMEM;
155
156 frame_size = priv->beacon_skb->len;
157
158 /* Set up TX command fields */
159 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
160 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
161 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
162 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
163 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
164
165 /* Set up TX beacon command fields */
166 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
167 frame_size);
168
169 /* Set up packet rate and flags */
170 info = IEEE80211_SKB_CB(priv->beacon_skb);
171
172 /*
173 * Let's set up the rate at least somewhat correctly;
174 * it will currently not actually be used by the uCode,
175 * it uses the broadcast station's rate instead.
176 */
177 if (info->control.rates[0].idx < 0 ||
178 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
179 rate = 0;
180 else
181 rate = info->control.rates[0].idx;
182
183 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
184 hw_params(priv).valid_tx_ant);
185 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
186
187 /* In mac80211, rates for 5 GHz start at 0 */
188 if (info->band == IEEE80211_BAND_5GHZ)
189 rate += IWL_FIRST_OFDM_RATE;
190 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
191 rate_flags |= RATE_MCS_CCK_MSK;
192
193 tx_beacon_cmd->tx.rate_n_flags =
194 iwl_hw_set_rate_n_flags(rate, rate_flags);
195
196 /* Submit command */
197 cmd.len[0] = sizeof(*tx_beacon_cmd);
198 cmd.data[0] = tx_beacon_cmd;
199 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
200 cmd.len[1] = frame_size;
201 cmd.data[1] = priv->beacon_skb->data;
202 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
203
204 return iwl_trans_send_cmd(trans(priv), &cmd);
205 }
206
207 static void iwl_bg_beacon_update(struct work_struct *work)
208 {
209 struct iwl_priv *priv =
210 container_of(work, struct iwl_priv, beacon_update);
211 struct sk_buff *beacon;
212
213 mutex_lock(&priv->shrd->mutex);
214 if (!priv->beacon_ctx) {
215 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
216 goto out;
217 }
218
219 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
220 /*
221 * The ucode will send beacon notifications even in
222 * IBSS mode, but we don't want to process them. But
223 * we need to defer the type check to here due to
224 * requiring locking around the beacon_ctx access.
225 */
226 goto out;
227 }
228
229 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
230 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
231 if (!beacon) {
232 IWL_ERR(priv, "update beacon failed -- keeping old\n");
233 goto out;
234 }
235
236 /* new beacon skb is allocated every time; dispose previous.*/
237 dev_kfree_skb(priv->beacon_skb);
238
239 priv->beacon_skb = beacon;
240
241 iwlagn_send_beacon_cmd(priv);
242 out:
243 mutex_unlock(&priv->shrd->mutex);
244 }
245
246 static void iwl_bg_bt_runtime_config(struct work_struct *work)
247 {
248 struct iwl_priv *priv =
249 container_of(work, struct iwl_priv, bt_runtime_config);
250
251 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
252 return;
253
254 /* dont send host command if rf-kill is on */
255 if (!iwl_is_ready_rf(priv->shrd))
256 return;
257 iwlagn_send_advance_bt_config(priv);
258 }
259
260 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
261 {
262 struct iwl_priv *priv =
263 container_of(work, struct iwl_priv, bt_full_concurrency);
264 struct iwl_rxon_context *ctx;
265
266 mutex_lock(&priv->shrd->mutex);
267
268 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
269 goto out;
270
271 /* dont send host command if rf-kill is on */
272 if (!iwl_is_ready_rf(priv->shrd))
273 goto out;
274
275 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
276 priv->bt_full_concurrent ?
277 "full concurrency" : "3-wire");
278
279 /*
280 * LQ & RXON updated cmds must be sent before BT Config cmd
281 * to avoid 3-wire collisions
282 */
283 for_each_context(priv, ctx) {
284 iwlagn_set_rxon_chain(priv, ctx);
285 iwlagn_commit_rxon(priv, ctx);
286 }
287
288 iwlagn_send_advance_bt_config(priv);
289 out:
290 mutex_unlock(&priv->shrd->mutex);
291 }
292
293 /**
294 * iwl_bg_statistics_periodic - Timer callback to queue statistics
295 *
296 * This callback is provided in order to send a statistics request.
297 *
298 * This timer function is continually reset to execute within
299 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
300 * was received. We need to ensure we receive the statistics in order
301 * to update the temperature used for calibrating the TXPOWER.
302 */
303 static void iwl_bg_statistics_periodic(unsigned long data)
304 {
305 struct iwl_priv *priv = (struct iwl_priv *)data;
306
307 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
308 return;
309
310 /* dont send host command if rf-kill is on */
311 if (!iwl_is_ready_rf(priv->shrd))
312 return;
313
314 iwl_send_statistics_request(priv, CMD_ASYNC, false);
315 }
316
317
318 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
319 u32 start_idx, u32 num_events,
320 u32 mode)
321 {
322 u32 i;
323 u32 ptr; /* SRAM byte address of log data */
324 u32 ev, time, data; /* event log data */
325 unsigned long reg_flags;
326
327 if (mode == 0)
328 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
329 else
330 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
331
332 /* Make sure device is powered up for SRAM reads */
333 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
334 if (iwl_grab_nic_access(bus(priv))) {
335 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
336 return;
337 }
338
339 /* Set starting address; reads will auto-increment */
340 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
341 rmb();
342
343 /*
344 * "time" is actually "data" for mode 0 (no timestamp).
345 * place event id # at far right for easier visual parsing.
346 */
347 for (i = 0; i < num_events; i++) {
348 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
349 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
350 if (mode == 0) {
351 trace_iwlwifi_dev_ucode_cont_event(priv,
352 0, time, ev);
353 } else {
354 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
355 trace_iwlwifi_dev_ucode_cont_event(priv,
356 time, data, ev);
357 }
358 }
359 /* Allow device to power down */
360 iwl_release_nic_access(bus(priv));
361 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
362 }
363
364 static void iwl_continuous_event_trace(struct iwl_priv *priv)
365 {
366 u32 capacity; /* event log capacity in # entries */
367 u32 base; /* SRAM byte address of event log header */
368 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
369 u32 num_wraps; /* # times uCode wrapped to top of log */
370 u32 next_entry; /* index of next entry to be written by uCode */
371
372 base = priv->device_pointers.error_event_table;
373 if (iwlagn_hw_valid_rtc_data_addr(base)) {
374 capacity = iwl_read_targ_mem(bus(priv), base);
375 num_wraps = iwl_read_targ_mem(bus(priv),
376 base + (2 * sizeof(u32)));
377 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
378 next_entry = iwl_read_targ_mem(bus(priv),
379 base + (3 * sizeof(u32)));
380 } else
381 return;
382
383 if (num_wraps == priv->event_log.num_wraps) {
384 iwl_print_cont_event_trace(priv,
385 base, priv->event_log.next_entry,
386 next_entry - priv->event_log.next_entry,
387 mode);
388 priv->event_log.non_wraps_count++;
389 } else {
390 if ((num_wraps - priv->event_log.num_wraps) > 1)
391 priv->event_log.wraps_more_count++;
392 else
393 priv->event_log.wraps_once_count++;
394 trace_iwlwifi_dev_ucode_wrap_event(priv,
395 num_wraps - priv->event_log.num_wraps,
396 next_entry, priv->event_log.next_entry);
397 if (next_entry < priv->event_log.next_entry) {
398 iwl_print_cont_event_trace(priv, base,
399 priv->event_log.next_entry,
400 capacity - priv->event_log.next_entry,
401 mode);
402
403 iwl_print_cont_event_trace(priv, base, 0,
404 next_entry, mode);
405 } else {
406 iwl_print_cont_event_trace(priv, base,
407 next_entry, capacity - next_entry,
408 mode);
409
410 iwl_print_cont_event_trace(priv, base, 0,
411 next_entry, mode);
412 }
413 }
414 priv->event_log.num_wraps = num_wraps;
415 priv->event_log.next_entry = next_entry;
416 }
417
418 /**
419 * iwl_bg_ucode_trace - Timer callback to log ucode event
420 *
421 * The timer is continually set to execute every
422 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
423 * this function is to perform continuous uCode event logging operation
424 * if enabled
425 */
426 static void iwl_bg_ucode_trace(unsigned long data)
427 {
428 struct iwl_priv *priv = (struct iwl_priv *)data;
429
430 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
431 return;
432
433 if (priv->event_log.ucode_trace) {
434 iwl_continuous_event_trace(priv);
435 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
436 mod_timer(&priv->ucode_trace,
437 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
438 }
439 }
440
441 static void iwl_bg_tx_flush(struct work_struct *work)
442 {
443 struct iwl_priv *priv =
444 container_of(work, struct iwl_priv, tx_flush);
445
446 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
447 return;
448
449 /* do nothing if rf-kill is on */
450 if (!iwl_is_ready_rf(priv->shrd))
451 return;
452
453 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
454 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
455 }
456
457 /******************************************************************************
458 *
459 * uCode download functions
460 *
461 ******************************************************************************/
462
463 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
464 {
465 if (desc->v_addr)
466 dma_free_coherent(bus(priv)->dev, desc->len,
467 desc->v_addr, desc->p_addr);
468 desc->v_addr = NULL;
469 desc->len = 0;
470 }
471
472 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
473 {
474 iwl_free_fw_desc(priv, &img->code);
475 iwl_free_fw_desc(priv, &img->data);
476 }
477
478 static void iwl_dealloc_ucode(struct iwl_priv *priv)
479 {
480 iwl_free_fw_img(priv, &priv->ucode_rt);
481 iwl_free_fw_img(priv, &priv->ucode_init);
482 iwl_free_fw_img(priv, &priv->ucode_wowlan);
483 }
484
485 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
486 const void *data, size_t len)
487 {
488 if (!len) {
489 desc->v_addr = NULL;
490 return -EINVAL;
491 }
492
493 desc->v_addr = dma_alloc_coherent(bus(priv)->dev, len,
494 &desc->p_addr, GFP_KERNEL);
495 if (!desc->v_addr)
496 return -ENOMEM;
497
498 desc->len = len;
499 memcpy(desc->v_addr, data, len);
500 return 0;
501 }
502
503 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
504 {
505 int i;
506
507 /*
508 * The default context is always valid,
509 * the PAN context depends on uCode.
510 */
511 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
512 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
513 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
514
515 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
516 priv->contexts[i].ctxid = i;
517
518 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
519 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
520 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
521 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
522 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
523 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
524 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
525 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
526 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
527 BIT(NL80211_IFTYPE_ADHOC);
528 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
529 BIT(NL80211_IFTYPE_STATION);
530 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
531 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
532 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
533 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
534
535 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
536 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
537 REPLY_WIPAN_RXON_TIMING;
538 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
539 REPLY_WIPAN_RXON_ASSOC;
540 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
541 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
542 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
543 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
544 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
545 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
546 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
547
548 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
549 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
550 BIT(NL80211_IFTYPE_P2P_CLIENT) |
551 BIT(NL80211_IFTYPE_P2P_GO);
552
553 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
554 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
555 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
556
557 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
558 }
559
560
561 struct iwlagn_ucode_capabilities {
562 u32 max_probe_length;
563 u32 standard_phy_calibration_size;
564 u32 flags;
565 };
566
567 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
568 static int iwlagn_mac_setup_register(struct iwl_priv *priv,
569 struct iwlagn_ucode_capabilities *capa);
570
571 #define UCODE_EXPERIMENTAL_INDEX 100
572 #define UCODE_EXPERIMENTAL_TAG "exp"
573
574 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
575 {
576 const char *name_pre = priv->cfg->fw_name_pre;
577 char tag[8];
578
579 if (first) {
580 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
581 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
582 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
583 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
584 #endif
585 priv->fw_index = priv->cfg->ucode_api_max;
586 sprintf(tag, "%d", priv->fw_index);
587 } else {
588 priv->fw_index--;
589 sprintf(tag, "%d", priv->fw_index);
590 }
591
592 if (priv->fw_index < priv->cfg->ucode_api_min) {
593 IWL_ERR(priv, "no suitable firmware found!\n");
594 return -ENOENT;
595 }
596
597 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
598
599 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
600 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
601 ? "EXPERIMENTAL " : "",
602 priv->firmware_name);
603
604 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
605 bus(priv)->dev,
606 GFP_KERNEL, priv, iwl_ucode_callback);
607 }
608
609 struct iwlagn_firmware_pieces {
610 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
611 size_t inst_size, data_size, init_size, init_data_size,
612 wowlan_inst_size, wowlan_data_size;
613
614 u32 build;
615
616 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
617 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
618 };
619
620 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
621 const struct firmware *ucode_raw,
622 struct iwlagn_firmware_pieces *pieces)
623 {
624 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
625 u32 api_ver, hdr_size;
626 const u8 *src;
627
628 priv->ucode_ver = le32_to_cpu(ucode->ver);
629 api_ver = IWL_UCODE_API(priv->ucode_ver);
630
631 switch (api_ver) {
632 default:
633 hdr_size = 28;
634 if (ucode_raw->size < hdr_size) {
635 IWL_ERR(priv, "File size too small!\n");
636 return -EINVAL;
637 }
638 pieces->build = le32_to_cpu(ucode->u.v2.build);
639 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
640 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
641 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
642 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
643 src = ucode->u.v2.data;
644 break;
645 case 0:
646 case 1:
647 case 2:
648 hdr_size = 24;
649 if (ucode_raw->size < hdr_size) {
650 IWL_ERR(priv, "File size too small!\n");
651 return -EINVAL;
652 }
653 pieces->build = 0;
654 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
655 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
656 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
657 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
658 src = ucode->u.v1.data;
659 break;
660 }
661
662 /* Verify size of file vs. image size info in file's header */
663 if (ucode_raw->size != hdr_size + pieces->inst_size +
664 pieces->data_size + pieces->init_size +
665 pieces->init_data_size) {
666
667 IWL_ERR(priv,
668 "uCode file size %d does not match expected size\n",
669 (int)ucode_raw->size);
670 return -EINVAL;
671 }
672
673 pieces->inst = src;
674 src += pieces->inst_size;
675 pieces->data = src;
676 src += pieces->data_size;
677 pieces->init = src;
678 src += pieces->init_size;
679 pieces->init_data = src;
680 src += pieces->init_data_size;
681
682 return 0;
683 }
684
685 static int iwlagn_load_firmware(struct iwl_priv *priv,
686 const struct firmware *ucode_raw,
687 struct iwlagn_firmware_pieces *pieces,
688 struct iwlagn_ucode_capabilities *capa)
689 {
690 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
691 struct iwl_ucode_tlv *tlv;
692 size_t len = ucode_raw->size;
693 const u8 *data;
694 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
695 int tmp;
696 u64 alternatives;
697 u32 tlv_len;
698 enum iwl_ucode_tlv_type tlv_type;
699 const u8 *tlv_data;
700
701 if (len < sizeof(*ucode)) {
702 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
703 return -EINVAL;
704 }
705
706 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
707 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
708 le32_to_cpu(ucode->magic));
709 return -EINVAL;
710 }
711
712 /*
713 * Check which alternatives are present, and "downgrade"
714 * when the chosen alternative is not present, warning
715 * the user when that happens. Some files may not have
716 * any alternatives, so don't warn in that case.
717 */
718 alternatives = le64_to_cpu(ucode->alternatives);
719 tmp = wanted_alternative;
720 if (wanted_alternative > 63)
721 wanted_alternative = 63;
722 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
723 wanted_alternative--;
724 if (wanted_alternative && wanted_alternative != tmp)
725 IWL_WARN(priv,
726 "uCode alternative %d not available, choosing %d\n",
727 tmp, wanted_alternative);
728
729 priv->ucode_ver = le32_to_cpu(ucode->ver);
730 pieces->build = le32_to_cpu(ucode->build);
731 data = ucode->data;
732
733 len -= sizeof(*ucode);
734
735 while (len >= sizeof(*tlv)) {
736 u16 tlv_alt;
737
738 len -= sizeof(*tlv);
739 tlv = (void *)data;
740
741 tlv_len = le32_to_cpu(tlv->length);
742 tlv_type = le16_to_cpu(tlv->type);
743 tlv_alt = le16_to_cpu(tlv->alternative);
744 tlv_data = tlv->data;
745
746 if (len < tlv_len) {
747 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
748 len, tlv_len);
749 return -EINVAL;
750 }
751 len -= ALIGN(tlv_len, 4);
752 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
753
754 /*
755 * Alternative 0 is always valid.
756 *
757 * Skip alternative TLVs that are not selected.
758 */
759 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
760 continue;
761
762 switch (tlv_type) {
763 case IWL_UCODE_TLV_INST:
764 pieces->inst = tlv_data;
765 pieces->inst_size = tlv_len;
766 break;
767 case IWL_UCODE_TLV_DATA:
768 pieces->data = tlv_data;
769 pieces->data_size = tlv_len;
770 break;
771 case IWL_UCODE_TLV_INIT:
772 pieces->init = tlv_data;
773 pieces->init_size = tlv_len;
774 break;
775 case IWL_UCODE_TLV_INIT_DATA:
776 pieces->init_data = tlv_data;
777 pieces->init_data_size = tlv_len;
778 break;
779 case IWL_UCODE_TLV_BOOT:
780 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
781 break;
782 case IWL_UCODE_TLV_PROBE_MAX_LEN:
783 if (tlv_len != sizeof(u32))
784 goto invalid_tlv_len;
785 capa->max_probe_length =
786 le32_to_cpup((__le32 *)tlv_data);
787 break;
788 case IWL_UCODE_TLV_PAN:
789 if (tlv_len)
790 goto invalid_tlv_len;
791 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
792 break;
793 case IWL_UCODE_TLV_FLAGS:
794 /* must be at least one u32 */
795 if (tlv_len < sizeof(u32))
796 goto invalid_tlv_len;
797 /* and a proper number of u32s */
798 if (tlv_len % sizeof(u32))
799 goto invalid_tlv_len;
800 /*
801 * This driver only reads the first u32 as
802 * right now no more features are defined,
803 * if that changes then either the driver
804 * will not work with the new firmware, or
805 * it'll not take advantage of new features.
806 */
807 capa->flags = le32_to_cpup((__le32 *)tlv_data);
808 break;
809 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
810 if (tlv_len != sizeof(u32))
811 goto invalid_tlv_len;
812 pieces->init_evtlog_ptr =
813 le32_to_cpup((__le32 *)tlv_data);
814 break;
815 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
816 if (tlv_len != sizeof(u32))
817 goto invalid_tlv_len;
818 pieces->init_evtlog_size =
819 le32_to_cpup((__le32 *)tlv_data);
820 break;
821 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
822 if (tlv_len != sizeof(u32))
823 goto invalid_tlv_len;
824 pieces->init_errlog_ptr =
825 le32_to_cpup((__le32 *)tlv_data);
826 break;
827 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
828 if (tlv_len != sizeof(u32))
829 goto invalid_tlv_len;
830 pieces->inst_evtlog_ptr =
831 le32_to_cpup((__le32 *)tlv_data);
832 break;
833 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
834 if (tlv_len != sizeof(u32))
835 goto invalid_tlv_len;
836 pieces->inst_evtlog_size =
837 le32_to_cpup((__le32 *)tlv_data);
838 break;
839 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
840 if (tlv_len != sizeof(u32))
841 goto invalid_tlv_len;
842 pieces->inst_errlog_ptr =
843 le32_to_cpup((__le32 *)tlv_data);
844 break;
845 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
846 if (tlv_len)
847 goto invalid_tlv_len;
848 priv->enhance_sensitivity_table = true;
849 break;
850 case IWL_UCODE_TLV_WOWLAN_INST:
851 pieces->wowlan_inst = tlv_data;
852 pieces->wowlan_inst_size = tlv_len;
853 break;
854 case IWL_UCODE_TLV_WOWLAN_DATA:
855 pieces->wowlan_data = tlv_data;
856 pieces->wowlan_data_size = tlv_len;
857 break;
858 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
859 if (tlv_len != sizeof(u32))
860 goto invalid_tlv_len;
861 capa->standard_phy_calibration_size =
862 le32_to_cpup((__le32 *)tlv_data);
863 break;
864 default:
865 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
866 break;
867 }
868 }
869
870 if (len) {
871 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
872 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
873 return -EINVAL;
874 }
875
876 return 0;
877
878 invalid_tlv_len:
879 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
880 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
881
882 return -EINVAL;
883 }
884
885 /**
886 * iwl_ucode_callback - callback when firmware was loaded
887 *
888 * If loaded successfully, copies the firmware into buffers
889 * for the card to fetch (via DMA).
890 */
891 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
892 {
893 struct iwl_priv *priv = context;
894 struct iwl_ucode_header *ucode;
895 int err;
896 struct iwlagn_firmware_pieces pieces;
897 const unsigned int api_max = priv->cfg->ucode_api_max;
898 unsigned int api_ok = priv->cfg->ucode_api_ok;
899 const unsigned int api_min = priv->cfg->ucode_api_min;
900 u32 api_ver;
901 char buildstr[25];
902 u32 build;
903 struct iwlagn_ucode_capabilities ucode_capa = {
904 .max_probe_length = 200,
905 .standard_phy_calibration_size =
906 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
907 };
908
909 if (!api_ok)
910 api_ok = api_max;
911
912 memset(&pieces, 0, sizeof(pieces));
913
914 if (!ucode_raw) {
915 if (priv->fw_index <= api_ok)
916 IWL_ERR(priv,
917 "request for firmware file '%s' failed.\n",
918 priv->firmware_name);
919 goto try_again;
920 }
921
922 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
923 priv->firmware_name, ucode_raw->size);
924
925 /* Make sure that we got at least the API version number */
926 if (ucode_raw->size < 4) {
927 IWL_ERR(priv, "File size way too small!\n");
928 goto try_again;
929 }
930
931 /* Data from ucode file: header followed by uCode images */
932 ucode = (struct iwl_ucode_header *)ucode_raw->data;
933
934 if (ucode->ver)
935 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
936 else
937 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
938 &ucode_capa);
939
940 if (err)
941 goto try_again;
942
943 api_ver = IWL_UCODE_API(priv->ucode_ver);
944 build = pieces.build;
945
946 /*
947 * api_ver should match the api version forming part of the
948 * firmware filename ... but we don't check for that and only rely
949 * on the API version read from firmware header from here on forward
950 */
951 /* no api version check required for experimental uCode */
952 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
953 if (api_ver < api_min || api_ver > api_max) {
954 IWL_ERR(priv,
955 "Driver unable to support your firmware API. "
956 "Driver supports v%u, firmware is v%u.\n",
957 api_max, api_ver);
958 goto try_again;
959 }
960
961 if (api_ver < api_ok) {
962 if (api_ok != api_max)
963 IWL_ERR(priv, "Firmware has old API version, "
964 "expected v%u through v%u, got v%u.\n",
965 api_ok, api_max, api_ver);
966 else
967 IWL_ERR(priv, "Firmware has old API version, "
968 "expected v%u, got v%u.\n",
969 api_max, api_ver);
970 IWL_ERR(priv, "New firmware can be obtained from "
971 "http://www.intellinuxwireless.org/.\n");
972 }
973 }
974
975 if (build)
976 sprintf(buildstr, " build %u%s", build,
977 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
978 ? " (EXP)" : "");
979 else
980 buildstr[0] = '\0';
981
982 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
983 IWL_UCODE_MAJOR(priv->ucode_ver),
984 IWL_UCODE_MINOR(priv->ucode_ver),
985 IWL_UCODE_API(priv->ucode_ver),
986 IWL_UCODE_SERIAL(priv->ucode_ver),
987 buildstr);
988
989 snprintf(priv->hw->wiphy->fw_version,
990 sizeof(priv->hw->wiphy->fw_version),
991 "%u.%u.%u.%u%s",
992 IWL_UCODE_MAJOR(priv->ucode_ver),
993 IWL_UCODE_MINOR(priv->ucode_ver),
994 IWL_UCODE_API(priv->ucode_ver),
995 IWL_UCODE_SERIAL(priv->ucode_ver),
996 buildstr);
997
998 /*
999 * For any of the failures below (before allocating pci memory)
1000 * we will try to load a version with a smaller API -- maybe the
1001 * user just got a corrupted version of the latest API.
1002 */
1003
1004 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1005 priv->ucode_ver);
1006 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1007 pieces.inst_size);
1008 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1009 pieces.data_size);
1010 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1011 pieces.init_size);
1012 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1013 pieces.init_data_size);
1014
1015 /* Verify that uCode images will fit in card's SRAM */
1016 if (pieces.inst_size > hw_params(priv).max_inst_size) {
1017 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1018 pieces.inst_size);
1019 goto try_again;
1020 }
1021
1022 if (pieces.data_size > hw_params(priv).max_data_size) {
1023 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1024 pieces.data_size);
1025 goto try_again;
1026 }
1027
1028 if (pieces.init_size > hw_params(priv).max_inst_size) {
1029 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1030 pieces.init_size);
1031 goto try_again;
1032 }
1033
1034 if (pieces.init_data_size > hw_params(priv).max_data_size) {
1035 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1036 pieces.init_data_size);
1037 goto try_again;
1038 }
1039
1040 /* Allocate ucode buffers for card's bus-master loading ... */
1041
1042 /* Runtime instructions and 2 copies of data:
1043 * 1) unmodified from disk
1044 * 2) backup cache for save/restore during power-downs */
1045 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1046 pieces.inst, pieces.inst_size))
1047 goto err_pci_alloc;
1048 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1049 pieces.data, pieces.data_size))
1050 goto err_pci_alloc;
1051
1052 /* Initialization instructions and data */
1053 if (pieces.init_size && pieces.init_data_size) {
1054 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1055 pieces.init, pieces.init_size))
1056 goto err_pci_alloc;
1057 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1058 pieces.init_data, pieces.init_data_size))
1059 goto err_pci_alloc;
1060 }
1061
1062 /* WoWLAN instructions and data */
1063 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1064 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1065 pieces.wowlan_inst,
1066 pieces.wowlan_inst_size))
1067 goto err_pci_alloc;
1068 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1069 pieces.wowlan_data,
1070 pieces.wowlan_data_size))
1071 goto err_pci_alloc;
1072 }
1073
1074 /* Now that we can no longer fail, copy information */
1075
1076 /*
1077 * The (size - 16) / 12 formula is based on the information recorded
1078 * for each event, which is of mode 1 (including timestamp) for all
1079 * new microcodes that include this information.
1080 */
1081 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1082 if (pieces.init_evtlog_size)
1083 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1084 else
1085 priv->init_evtlog_size =
1086 priv->cfg->base_params->max_event_log_size;
1087 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1088 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1089 if (pieces.inst_evtlog_size)
1090 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1091 else
1092 priv->inst_evtlog_size =
1093 priv->cfg->base_params->max_event_log_size;
1094 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1095
1096 priv->new_scan_threshold_behaviour =
1097 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1098
1099 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1100 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1101
1102 /*
1103 * if not PAN, then don't support P2P -- might be a uCode
1104 * packaging bug or due to the eeprom check above
1105 */
1106 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1107 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1108
1109 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1110 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1111 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1112 } else {
1113 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1114 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1115 }
1116
1117 /*
1118 * figure out the offset of chain noise reset and gain commands
1119 * base on the size of standard phy calibration commands table size
1120 */
1121 if (ucode_capa.standard_phy_calibration_size >
1122 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1123 ucode_capa.standard_phy_calibration_size =
1124 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1125
1126 priv->phy_calib_chain_noise_reset_cmd =
1127 ucode_capa.standard_phy_calibration_size;
1128 priv->phy_calib_chain_noise_gain_cmd =
1129 ucode_capa.standard_phy_calibration_size + 1;
1130
1131 /* initialize all valid contexts */
1132 iwl_init_context(priv, ucode_capa.flags);
1133
1134 /**************************************************
1135 * This is still part of probe() in a sense...
1136 *
1137 * 9. Setup and register with mac80211 and debugfs
1138 **************************************************/
1139 err = iwlagn_mac_setup_register(priv, &ucode_capa);
1140 if (err)
1141 goto out_unbind;
1142
1143 err = iwl_dbgfs_register(priv, DRV_NAME);
1144 if (err)
1145 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1146
1147 /* We have our copies now, allow OS release its copies */
1148 release_firmware(ucode_raw);
1149 complete(&priv->firmware_loading_complete);
1150 return;
1151
1152 try_again:
1153 /* try next, if any */
1154 if (iwl_request_firmware(priv, false))
1155 goto out_unbind;
1156 release_firmware(ucode_raw);
1157 return;
1158
1159 err_pci_alloc:
1160 IWL_ERR(priv, "failed to allocate pci memory\n");
1161 iwl_dealloc_ucode(priv);
1162 out_unbind:
1163 complete(&priv->firmware_loading_complete);
1164 device_release_driver(bus(priv)->dev);
1165 release_firmware(ucode_raw);
1166 }
1167
1168 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1169 {
1170 struct iwl_ct_kill_config cmd;
1171 struct iwl_ct_kill_throttling_config adv_cmd;
1172 unsigned long flags;
1173 int ret = 0;
1174
1175 spin_lock_irqsave(&priv->shrd->lock, flags);
1176 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1177 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1178 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1179 priv->thermal_throttle.ct_kill_toggle = false;
1180
1181 if (priv->cfg->base_params->support_ct_kill_exit) {
1182 adv_cmd.critical_temperature_enter =
1183 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1184 adv_cmd.critical_temperature_exit =
1185 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1186
1187 ret = iwl_trans_send_cmd_pdu(trans(priv),
1188 REPLY_CT_KILL_CONFIG_CMD,
1189 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1190 if (ret)
1191 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1192 else
1193 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1194 "succeeded, critical temperature enter is %d,"
1195 "exit is %d\n",
1196 hw_params(priv).ct_kill_threshold,
1197 hw_params(priv).ct_kill_exit_threshold);
1198 } else {
1199 cmd.critical_temperature_R =
1200 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1201
1202 ret = iwl_trans_send_cmd_pdu(trans(priv),
1203 REPLY_CT_KILL_CONFIG_CMD,
1204 CMD_SYNC, sizeof(cmd), &cmd);
1205 if (ret)
1206 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1207 else
1208 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1209 "succeeded, "
1210 "critical temperature is %d\n",
1211 hw_params(priv).ct_kill_threshold);
1212 }
1213 }
1214
1215 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1216 {
1217 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1218 struct iwl_host_cmd cmd = {
1219 .id = CALIBRATION_CFG_CMD,
1220 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1221 .data = { &calib_cfg_cmd, },
1222 };
1223
1224 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1225 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1226 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1227
1228 return iwl_trans_send_cmd(trans(priv), &cmd);
1229 }
1230
1231
1232 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1233 {
1234 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1235 .valid = cpu_to_le32(valid_tx_ant),
1236 };
1237
1238 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1239 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1240 return iwl_trans_send_cmd_pdu(trans(priv),
1241 TX_ANT_CONFIGURATION_CMD,
1242 CMD_SYNC,
1243 sizeof(struct iwl_tx_ant_config_cmd),
1244 &tx_ant_cmd);
1245 } else {
1246 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1247 return -EOPNOTSUPP;
1248 }
1249 }
1250
1251 /**
1252 * iwl_alive_start - called after REPLY_ALIVE notification received
1253 * from protocol/runtime uCode (initialization uCode's
1254 * Alive gets handled by iwl_init_alive_start()).
1255 */
1256 int iwl_alive_start(struct iwl_priv *priv)
1257 {
1258 int ret = 0;
1259 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1260
1261 /*TODO: this should go to the transport layer */
1262 iwl_reset_ict(trans(priv));
1263
1264 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1265
1266 /* After the ALIVE response, we can send host commands to the uCode */
1267 set_bit(STATUS_ALIVE, &priv->shrd->status);
1268
1269 /* Enable watchdog to monitor the driver tx queues */
1270 iwl_setup_watchdog(priv);
1271
1272 if (iwl_is_rfkill(priv->shrd))
1273 return -ERFKILL;
1274
1275 /* download priority table before any calibration request */
1276 if (priv->cfg->bt_params &&
1277 priv->cfg->bt_params->advanced_bt_coexist) {
1278 /* Configure Bluetooth device coexistence support */
1279 if (priv->cfg->bt_params->bt_sco_disable)
1280 priv->bt_enable_pspoll = false;
1281 else
1282 priv->bt_enable_pspoll = true;
1283
1284 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1285 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1286 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1287 iwlagn_send_advance_bt_config(priv);
1288 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1289 priv->cur_rssi_ctx = NULL;
1290
1291 iwlagn_send_prio_tbl(priv);
1292
1293 /* FIXME: w/a to force change uCode BT state machine */
1294 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1295 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1296 if (ret)
1297 return ret;
1298 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1299 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1300 if (ret)
1301 return ret;
1302 } else {
1303 /*
1304 * default is 2-wire BT coexexistence support
1305 */
1306 iwl_send_bt_config(priv);
1307 }
1308
1309 if (hw_params(priv).calib_rt_cfg)
1310 iwlagn_send_calib_cfg_rt(priv,
1311 hw_params(priv).calib_rt_cfg);
1312
1313 ieee80211_wake_queues(priv->hw);
1314
1315 priv->active_rate = IWL_RATES_MASK;
1316
1317 /* Configure Tx antenna selection based on H/W config */
1318 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1319
1320 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1321 struct iwl_rxon_cmd *active_rxon =
1322 (struct iwl_rxon_cmd *)&ctx->active;
1323 /* apply any changes in staging */
1324 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1325 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1326 } else {
1327 struct iwl_rxon_context *tmp;
1328 /* Initialize our rx_config data */
1329 for_each_context(priv, tmp)
1330 iwl_connection_init_rx_config(priv, tmp);
1331
1332 iwlagn_set_rxon_chain(priv, ctx);
1333 }
1334
1335 if (!priv->shrd->wowlan) {
1336 /* WoWLAN ucode will not reply in the same way, skip it */
1337 iwl_reset_run_time_calib(priv);
1338 }
1339
1340 set_bit(STATUS_READY, &priv->shrd->status);
1341
1342 /* Configure the adapter for unassociated operation */
1343 ret = iwlagn_commit_rxon(priv, ctx);
1344 if (ret)
1345 return ret;
1346
1347 /* At this point, the NIC is initialized and operational */
1348 iwl_rf_kill_ct_config(priv);
1349
1350 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1351
1352 return iwl_power_update_mode(priv, true);
1353 }
1354
1355 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1356
1357 static void __iwl_down(struct iwl_priv *priv)
1358 {
1359 int exit_pending;
1360
1361 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1362
1363 iwl_scan_cancel_timeout(priv, 200);
1364
1365 /*
1366 * If active, scanning won't cancel it, so say it expired.
1367 * No race since we hold the mutex here and a new one
1368 * can't come in at this time.
1369 */
1370 ieee80211_remain_on_channel_expired(priv->hw);
1371
1372 exit_pending =
1373 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1374
1375 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1376 * to prevent rearm timer */
1377 del_timer_sync(&priv->watchdog);
1378
1379 iwl_clear_ucode_stations(priv, NULL);
1380 iwl_dealloc_bcast_stations(priv);
1381 iwl_clear_driver_stations(priv);
1382
1383 /* reset BT coex data */
1384 priv->bt_status = 0;
1385 priv->cur_rssi_ctx = NULL;
1386 priv->bt_is_sco = 0;
1387 if (priv->cfg->bt_params)
1388 priv->bt_traffic_load =
1389 priv->cfg->bt_params->bt_init_traffic_load;
1390 else
1391 priv->bt_traffic_load = 0;
1392 priv->bt_full_concurrent = false;
1393 priv->bt_ci_compliance = 0;
1394
1395 /* Wipe out the EXIT_PENDING status bit if we are not actually
1396 * exiting the module */
1397 if (!exit_pending)
1398 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1399
1400 if (priv->mac80211_registered)
1401 ieee80211_stop_queues(priv->hw);
1402
1403 iwl_trans_stop_device(trans(priv));
1404
1405 /* Clear out all status bits but a few that are stable across reset */
1406 priv->shrd->status &=
1407 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1408 STATUS_RF_KILL_HW |
1409 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1410 STATUS_GEO_CONFIGURED |
1411 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1412 STATUS_FW_ERROR |
1413 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1414 STATUS_EXIT_PENDING;
1415
1416 dev_kfree_skb(priv->beacon_skb);
1417 priv->beacon_skb = NULL;
1418 }
1419
1420 static void iwl_down(struct iwl_priv *priv)
1421 {
1422 mutex_lock(&priv->shrd->mutex);
1423 __iwl_down(priv);
1424 mutex_unlock(&priv->shrd->mutex);
1425
1426 iwl_cancel_deferred_work(priv);
1427 }
1428
1429 #define MAX_HW_RESTARTS 5
1430
1431 static int __iwl_up(struct iwl_priv *priv)
1432 {
1433 struct iwl_rxon_context *ctx;
1434 int ret;
1435
1436 lockdep_assert_held(&priv->shrd->mutex);
1437
1438 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1439 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1440 return -EIO;
1441 }
1442
1443 for_each_context(priv, ctx) {
1444 ret = iwlagn_alloc_bcast_station(priv, ctx);
1445 if (ret) {
1446 iwl_dealloc_bcast_stations(priv);
1447 return ret;
1448 }
1449 }
1450
1451 ret = iwlagn_run_init_ucode(priv);
1452 if (ret) {
1453 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1454 goto error;
1455 }
1456
1457 ret = iwlagn_load_ucode_wait_alive(priv,
1458 &priv->ucode_rt,
1459 IWL_UCODE_REGULAR);
1460 if (ret) {
1461 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1462 goto error;
1463 }
1464
1465 ret = iwl_alive_start(priv);
1466 if (ret)
1467 goto error;
1468 return 0;
1469
1470 error:
1471 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1472 __iwl_down(priv);
1473 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1474
1475 IWL_ERR(priv, "Unable to initialize device.\n");
1476 return ret;
1477 }
1478
1479
1480 /*****************************************************************************
1481 *
1482 * Workqueue callbacks
1483 *
1484 *****************************************************************************/
1485
1486 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1487 {
1488 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1489 run_time_calib_work);
1490
1491 mutex_lock(&priv->shrd->mutex);
1492
1493 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1494 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1495 mutex_unlock(&priv->shrd->mutex);
1496 return;
1497 }
1498
1499 if (priv->start_calib) {
1500 iwl_chain_noise_calibration(priv);
1501 iwl_sensitivity_calibration(priv);
1502 }
1503
1504 mutex_unlock(&priv->shrd->mutex);
1505 }
1506
1507 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1508 {
1509 struct iwl_rxon_context *ctx;
1510 bool bt_full_concurrent;
1511 u8 bt_ci_compliance;
1512 u8 bt_load;
1513 u8 bt_status;
1514 bool bt_is_sco;
1515
1516 lockdep_assert_held(&priv->shrd->mutex);
1517
1518 for_each_context(priv, ctx)
1519 ctx->vif = NULL;
1520 priv->is_open = 0;
1521
1522 /*
1523 * __iwl_down() will clear the BT status variables,
1524 * which is correct, but when we restart we really
1525 * want to keep them so restore them afterwards.
1526 *
1527 * The restart process will later pick them up and
1528 * re-configure the hw when we reconfigure the BT
1529 * command.
1530 */
1531 bt_full_concurrent = priv->bt_full_concurrent;
1532 bt_ci_compliance = priv->bt_ci_compliance;
1533 bt_load = priv->bt_traffic_load;
1534 bt_status = priv->bt_status;
1535 bt_is_sco = priv->bt_is_sco;
1536
1537 __iwl_down(priv);
1538
1539 priv->bt_full_concurrent = bt_full_concurrent;
1540 priv->bt_ci_compliance = bt_ci_compliance;
1541 priv->bt_traffic_load = bt_load;
1542 priv->bt_status = bt_status;
1543 priv->bt_is_sco = bt_is_sco;
1544 }
1545
1546 static void iwl_bg_restart(struct work_struct *data)
1547 {
1548 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1549
1550 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1551 return;
1552
1553 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1554 mutex_lock(&priv->shrd->mutex);
1555 iwlagn_prepare_restart(priv);
1556 mutex_unlock(&priv->shrd->mutex);
1557 iwl_cancel_deferred_work(priv);
1558 ieee80211_restart_hw(priv->hw);
1559 } else {
1560 WARN_ON(1);
1561 }
1562 }
1563
1564 /*****************************************************************************
1565 *
1566 * mac80211 entry point functions
1567 *
1568 *****************************************************************************/
1569
1570 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1571 {
1572 .max = 1,
1573 .types = BIT(NL80211_IFTYPE_STATION),
1574 },
1575 {
1576 .max = 1,
1577 .types = BIT(NL80211_IFTYPE_AP),
1578 },
1579 };
1580
1581 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1582 {
1583 .max = 2,
1584 .types = BIT(NL80211_IFTYPE_STATION),
1585 },
1586 };
1587
1588 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1589 {
1590 .max = 1,
1591 .types = BIT(NL80211_IFTYPE_STATION),
1592 },
1593 {
1594 .max = 1,
1595 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1596 BIT(NL80211_IFTYPE_AP),
1597 },
1598 };
1599
1600 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1601 {
1602 .max = 2,
1603 .types = BIT(NL80211_IFTYPE_STATION),
1604 },
1605 {
1606 .max = 1,
1607 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1608 },
1609 };
1610
1611 static const struct ieee80211_iface_combination
1612 iwlagn_iface_combinations_dualmode[] = {
1613 { .num_different_channels = 1,
1614 .max_interfaces = 2,
1615 .beacon_int_infra_match = true,
1616 .limits = iwlagn_sta_ap_limits,
1617 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1618 },
1619 { .num_different_channels = 1,
1620 .max_interfaces = 2,
1621 .limits = iwlagn_2sta_limits,
1622 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1623 },
1624 };
1625
1626 static const struct ieee80211_iface_combination
1627 iwlagn_iface_combinations_p2p[] = {
1628 { .num_different_channels = 1,
1629 .max_interfaces = 2,
1630 .beacon_int_infra_match = true,
1631 .limits = iwlagn_p2p_sta_go_limits,
1632 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1633 },
1634 { .num_different_channels = 1,
1635 .max_interfaces = 2,
1636 .limits = iwlagn_p2p_2sta_limits,
1637 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1638 },
1639 };
1640
1641 /*
1642 * Not a mac80211 entry point function, but it fits in with all the
1643 * other mac80211 functions grouped here.
1644 */
1645 static int iwlagn_mac_setup_register(struct iwl_priv *priv,
1646 struct iwlagn_ucode_capabilities *capa)
1647 {
1648 int ret;
1649 struct ieee80211_hw *hw = priv->hw;
1650 struct iwl_rxon_context *ctx;
1651
1652 hw->rate_control_algorithm = "iwl-agn-rs";
1653
1654 /* Tell mac80211 our characteristics */
1655 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1656 IEEE80211_HW_AMPDU_AGGREGATION |
1657 IEEE80211_HW_NEED_DTIM_PERIOD |
1658 IEEE80211_HW_SPECTRUM_MGMT |
1659 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1660
1661 /*
1662 * Including the following line will crash some AP's. This
1663 * workaround removes the stimulus which causes the crash until
1664 * the AP software can be fixed.
1665 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1666 */
1667
1668 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1669 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1670
1671 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1672 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1673 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1674
1675 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1676 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1677
1678 hw->sta_data_size = sizeof(struct iwl_station_priv);
1679 hw->vif_data_size = sizeof(struct iwl_vif_priv);
1680
1681 for_each_context(priv, ctx) {
1682 hw->wiphy->interface_modes |= ctx->interface_modes;
1683 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1684 }
1685
1686 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1687
1688 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1689 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1690 hw->wiphy->n_iface_combinations =
1691 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1692 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1693 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1694 hw->wiphy->n_iface_combinations =
1695 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1696 }
1697
1698 hw->wiphy->max_remain_on_channel_duration = 1000;
1699
1700 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1701 WIPHY_FLAG_DISABLE_BEACON_HINTS |
1702 WIPHY_FLAG_IBSS_RSN;
1703
1704 if (priv->ucode_wowlan.code.len && device_can_wakeup(bus(priv)->dev)) {
1705 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1706 WIPHY_WOWLAN_DISCONNECT |
1707 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1708 WIPHY_WOWLAN_RFKILL_RELEASE;
1709 if (!iwlagn_mod_params.sw_crypto)
1710 hw->wiphy->wowlan.flags |=
1711 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1712 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1713
1714 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1715 hw->wiphy->wowlan.pattern_min_len =
1716 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1717 hw->wiphy->wowlan.pattern_max_len =
1718 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1719 }
1720
1721 if (iwlagn_mod_params.power_save)
1722 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1723 else
1724 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1725
1726 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1727 /* we create the 802.11 header and a zero-length SSID element */
1728 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1729
1730 /* Default value; 4 EDCA QOS priorities */
1731 hw->queues = 4;
1732
1733 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1734
1735 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1736 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1737 &priv->bands[IEEE80211_BAND_2GHZ];
1738 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1739 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1740 &priv->bands[IEEE80211_BAND_5GHZ];
1741
1742 iwl_leds_init(priv);
1743
1744 ret = ieee80211_register_hw(priv->hw);
1745 if (ret) {
1746 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1747 return ret;
1748 }
1749 priv->mac80211_registered = 1;
1750
1751 return 0;
1752 }
1753
1754
1755 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1756 {
1757 struct iwl_priv *priv = hw->priv;
1758 int ret;
1759
1760 IWL_DEBUG_MAC80211(priv, "enter\n");
1761
1762 /* we should be verifying the device is ready to be opened */
1763 mutex_lock(&priv->shrd->mutex);
1764 ret = __iwl_up(priv);
1765 mutex_unlock(&priv->shrd->mutex);
1766 if (ret)
1767 return ret;
1768
1769 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1770
1771 /* Now we should be done, and the READY bit should be set. */
1772 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1773 ret = -EIO;
1774
1775 iwlagn_led_enable(priv);
1776
1777 priv->is_open = 1;
1778 IWL_DEBUG_MAC80211(priv, "leave\n");
1779 return 0;
1780 }
1781
1782 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1783 {
1784 struct iwl_priv *priv = hw->priv;
1785
1786 IWL_DEBUG_MAC80211(priv, "enter\n");
1787
1788 if (!priv->is_open)
1789 return;
1790
1791 priv->is_open = 0;
1792
1793 iwl_down(priv);
1794
1795 flush_workqueue(priv->shrd->workqueue);
1796
1797 /* User space software may expect getting rfkill changes
1798 * even if interface is down */
1799 iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1800 iwl_enable_rfkill_int(priv);
1801
1802 IWL_DEBUG_MAC80211(priv, "leave\n");
1803 }
1804
1805 #ifdef CONFIG_PM_SLEEP
1806 static int iwlagn_send_patterns(struct iwl_priv *priv,
1807 struct cfg80211_wowlan *wowlan)
1808 {
1809 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1810 struct iwl_host_cmd cmd = {
1811 .id = REPLY_WOWLAN_PATTERNS,
1812 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1813 .flags = CMD_SYNC,
1814 };
1815 int i, err;
1816
1817 if (!wowlan->n_patterns)
1818 return 0;
1819
1820 cmd.len[0] = sizeof(*pattern_cmd) +
1821 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1822
1823 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1824 if (!pattern_cmd)
1825 return -ENOMEM;
1826
1827 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1828
1829 for (i = 0; i < wowlan->n_patterns; i++) {
1830 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1831
1832 memcpy(&pattern_cmd->patterns[i].mask,
1833 wowlan->patterns[i].mask, mask_len);
1834 memcpy(&pattern_cmd->patterns[i].pattern,
1835 wowlan->patterns[i].pattern,
1836 wowlan->patterns[i].pattern_len);
1837 pattern_cmd->patterns[i].mask_size = mask_len;
1838 pattern_cmd->patterns[i].pattern_size =
1839 wowlan->patterns[i].pattern_len;
1840 }
1841
1842 cmd.data[0] = pattern_cmd;
1843 err = iwl_trans_send_cmd(trans(priv), &cmd);
1844 kfree(pattern_cmd);
1845 return err;
1846 }
1847 #endif
1848
1849 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1850 struct ieee80211_vif *vif,
1851 struct cfg80211_gtk_rekey_data *data)
1852 {
1853 struct iwl_priv *priv = hw->priv;
1854
1855 if (iwlagn_mod_params.sw_crypto)
1856 return;
1857
1858 IWL_DEBUG_MAC80211(priv, "enter\n");
1859 mutex_lock(&priv->shrd->mutex);
1860
1861 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1862 goto out;
1863
1864 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
1865 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
1866 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
1867 priv->have_rekey_data = true;
1868
1869 out:
1870 mutex_unlock(&priv->shrd->mutex);
1871 IWL_DEBUG_MAC80211(priv, "leave\n");
1872 }
1873
1874 struct wowlan_key_data {
1875 struct iwl_rxon_context *ctx;
1876 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
1877 struct iwlagn_wowlan_tkip_params_cmd *tkip;
1878 const u8 *bssid;
1879 bool error, use_rsc_tsc, use_tkip;
1880 };
1881
1882 #ifdef CONFIG_PM_SLEEP
1883 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
1884 {
1885 int i;
1886
1887 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
1888 out[i] = cpu_to_le16(p1k[i]);
1889 }
1890
1891 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
1892 struct ieee80211_vif *vif,
1893 struct ieee80211_sta *sta,
1894 struct ieee80211_key_conf *key,
1895 void *_data)
1896 {
1897 struct iwl_priv *priv = hw->priv;
1898 struct wowlan_key_data *data = _data;
1899 struct iwl_rxon_context *ctx = data->ctx;
1900 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
1901 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
1902 struct iwlagn_p1k_cache *rx_p1ks;
1903 u8 *rx_mic_key;
1904 struct ieee80211_key_seq seq;
1905 u32 cur_rx_iv32 = 0;
1906 u16 p1k[IWLAGN_P1K_SIZE];
1907 int ret, i;
1908
1909 mutex_lock(&priv->shrd->mutex);
1910
1911 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1912 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
1913 !sta && !ctx->key_mapping_keys)
1914 ret = iwl_set_default_wep_key(priv, ctx, key);
1915 else
1916 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
1917
1918 if (ret) {
1919 IWL_ERR(priv, "Error setting key during suspend!\n");
1920 data->error = true;
1921 }
1922
1923 switch (key->cipher) {
1924 case WLAN_CIPHER_SUITE_TKIP:
1925 if (sta) {
1926 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
1927 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
1928
1929 rx_p1ks = data->tkip->rx_uni;
1930
1931 ieee80211_get_key_tx_seq(key, &seq);
1932 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
1933 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
1934
1935 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1936 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1937
1938 memcpy(data->tkip->mic_keys.tx,
1939 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1940 IWLAGN_MIC_KEY_SIZE);
1941
1942 rx_mic_key = data->tkip->mic_keys.rx_unicast;
1943 } else {
1944 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1945 rx_p1ks = data->tkip->rx_multi;
1946 rx_mic_key = data->tkip->mic_keys.rx_mcast;
1947 }
1948
1949 /*
1950 * For non-QoS this relies on the fact that both the uCode and
1951 * mac80211 use TID 0 (as they need to to avoid replay attacks)
1952 * for checking the IV in the frames.
1953 */
1954 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1955 ieee80211_get_key_rx_seq(key, i, &seq);
1956 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1957 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1958 /* wrapping isn't allowed, AP must rekey */
1959 if (seq.tkip.iv32 > cur_rx_iv32)
1960 cur_rx_iv32 = seq.tkip.iv32;
1961 }
1962
1963 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1964 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1965 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1966 cur_rx_iv32 + 1, p1k);
1967 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1968
1969 memcpy(rx_mic_key,
1970 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1971 IWLAGN_MIC_KEY_SIZE);
1972
1973 data->use_tkip = true;
1974 data->use_rsc_tsc = true;
1975 break;
1976 case WLAN_CIPHER_SUITE_CCMP:
1977 if (sta) {
1978 u8 *pn = seq.ccmp.pn;
1979
1980 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1981 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1982
1983 ieee80211_get_key_tx_seq(key, &seq);
1984 aes_tx_sc->pn = cpu_to_le64(
1985 (u64)pn[5] |
1986 ((u64)pn[4] << 8) |
1987 ((u64)pn[3] << 16) |
1988 ((u64)pn[2] << 24) |
1989 ((u64)pn[1] << 32) |
1990 ((u64)pn[0] << 40));
1991 } else
1992 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1993
1994 /*
1995 * For non-QoS this relies on the fact that both the uCode and
1996 * mac80211 use TID 0 for checking the IV in the frames.
1997 */
1998 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1999 u8 *pn = seq.ccmp.pn;
2000
2001 ieee80211_get_key_rx_seq(key, i, &seq);
2002 aes_sc->pn = cpu_to_le64(
2003 (u64)pn[5] |
2004 ((u64)pn[4] << 8) |
2005 ((u64)pn[3] << 16) |
2006 ((u64)pn[2] << 24) |
2007 ((u64)pn[1] << 32) |
2008 ((u64)pn[0] << 40));
2009 }
2010 data->use_rsc_tsc = true;
2011 break;
2012 }
2013
2014 mutex_unlock(&priv->shrd->mutex);
2015 }
2016
2017 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2018 struct cfg80211_wowlan *wowlan)
2019 {
2020 struct iwl_priv *priv = hw->priv;
2021 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2022 struct iwl_rxon_cmd rxon;
2023 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2024 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2025 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2026 struct wowlan_key_data key_data = {
2027 .ctx = ctx,
2028 .bssid = ctx->active.bssid_addr,
2029 .use_rsc_tsc = false,
2030 .tkip = &tkip_cmd,
2031 .use_tkip = false,
2032 };
2033 int ret, i;
2034 u16 seq;
2035
2036 if (WARN_ON(!wowlan))
2037 return -EINVAL;
2038
2039 IWL_DEBUG_MAC80211(priv, "enter\n");
2040 mutex_lock(&priv->shrd->mutex);
2041
2042 /* Don't attempt WoWLAN when not associated, tear down instead. */
2043 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2044 !iwl_is_associated_ctx(ctx)) {
2045 ret = 1;
2046 goto out;
2047 }
2048
2049 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2050 if (!key_data.rsc_tsc) {
2051 ret = -ENOMEM;
2052 goto out;
2053 }
2054
2055 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2056
2057 /*
2058 * We know the last used seqno, and the uCode expects to know that
2059 * one, it will increment before TX.
2060 */
2061 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2062 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2063
2064 /*
2065 * For QoS counters, we store the one to use next, so subtract 0x10
2066 * since the uCode will add 0x10 before using the value.
2067 */
2068 for (i = 0; i < 8; i++) {
2069 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2070 seq -= 0x10;
2071 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2072 }
2073
2074 if (wowlan->disconnect)
2075 wakeup_filter_cmd.enabled |=
2076 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2077 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2078 if (wowlan->magic_pkt)
2079 wakeup_filter_cmd.enabled |=
2080 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2081 if (wowlan->gtk_rekey_failure)
2082 wakeup_filter_cmd.enabled |=
2083 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2084 if (wowlan->eap_identity_req)
2085 wakeup_filter_cmd.enabled |=
2086 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2087 if (wowlan->four_way_handshake)
2088 wakeup_filter_cmd.enabled |=
2089 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2090 if (wowlan->rfkill_release)
2091 wakeup_filter_cmd.enabled |=
2092 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2093 if (wowlan->n_patterns)
2094 wakeup_filter_cmd.enabled |=
2095 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2096
2097 iwl_scan_cancel_timeout(priv, 200);
2098
2099 memcpy(&rxon, &ctx->active, sizeof(rxon));
2100
2101 iwl_trans_stop_device(trans(priv));
2102
2103 priv->shrd->wowlan = true;
2104
2105 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2106 IWL_UCODE_WOWLAN);
2107 if (ret)
2108 goto error;
2109
2110 /* now configure WoWLAN ucode */
2111 ret = iwl_alive_start(priv);
2112 if (ret)
2113 goto error;
2114
2115 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2116 ret = iwlagn_commit_rxon(priv, ctx);
2117 if (ret)
2118 goto error;
2119
2120 ret = iwl_power_update_mode(priv, true);
2121 if (ret)
2122 goto error;
2123
2124 if (!iwlagn_mod_params.sw_crypto) {
2125 /* mark all keys clear */
2126 priv->ucode_key_table = 0;
2127 ctx->key_mapping_keys = 0;
2128
2129 /*
2130 * This needs to be unlocked due to lock ordering
2131 * constraints. Since we're in the suspend path
2132 * that isn't really a problem though.
2133 */
2134 mutex_unlock(&priv->shrd->mutex);
2135 ieee80211_iter_keys(priv->hw, ctx->vif,
2136 iwlagn_wowlan_program_keys,
2137 &key_data);
2138 mutex_lock(&priv->shrd->mutex);
2139 if (key_data.error) {
2140 ret = -EIO;
2141 goto error;
2142 }
2143
2144 if (key_data.use_rsc_tsc) {
2145 struct iwl_host_cmd rsc_tsc_cmd = {
2146 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2147 .flags = CMD_SYNC,
2148 .data[0] = key_data.rsc_tsc,
2149 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2150 .len[0] = sizeof(*key_data.rsc_tsc),
2151 };
2152
2153 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2154 if (ret)
2155 goto error;
2156 }
2157
2158 if (key_data.use_tkip) {
2159 ret = iwl_trans_send_cmd_pdu(trans(priv),
2160 REPLY_WOWLAN_TKIP_PARAMS,
2161 CMD_SYNC, sizeof(tkip_cmd),
2162 &tkip_cmd);
2163 if (ret)
2164 goto error;
2165 }
2166
2167 if (priv->have_rekey_data) {
2168 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2169 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2170 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2171 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2172 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2173 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2174
2175 ret = iwl_trans_send_cmd_pdu(trans(priv),
2176 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2177 CMD_SYNC, sizeof(kek_kck_cmd),
2178 &kek_kck_cmd);
2179 if (ret)
2180 goto error;
2181 }
2182 }
2183
2184 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2185 CMD_SYNC, sizeof(wakeup_filter_cmd),
2186 &wakeup_filter_cmd);
2187 if (ret)
2188 goto error;
2189
2190 ret = iwlagn_send_patterns(priv, wowlan);
2191 if (ret)
2192 goto error;
2193
2194 device_set_wakeup_enable(bus(priv)->dev, true);
2195
2196 /* Now let the ucode operate on its own */
2197 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2198 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2199
2200 goto out;
2201
2202 error:
2203 priv->shrd->wowlan = false;
2204 iwlagn_prepare_restart(priv);
2205 ieee80211_restart_hw(priv->hw);
2206 out:
2207 mutex_unlock(&priv->shrd->mutex);
2208 kfree(key_data.rsc_tsc);
2209 IWL_DEBUG_MAC80211(priv, "leave\n");
2210
2211 return ret;
2212 }
2213
2214 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2215 {
2216 struct iwl_priv *priv = hw->priv;
2217 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2218 struct ieee80211_vif *vif;
2219 unsigned long flags;
2220 u32 base, status = 0xffffffff;
2221 int ret = -EIO;
2222
2223 IWL_DEBUG_MAC80211(priv, "enter\n");
2224 mutex_lock(&priv->shrd->mutex);
2225
2226 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2227 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2228
2229 base = priv->device_pointers.error_event_table;
2230 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2231 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2232 ret = iwl_grab_nic_access_silent(bus(priv));
2233 if (ret == 0) {
2234 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2235 status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2236 iwl_release_nic_access(bus(priv));
2237 }
2238 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2239
2240 #ifdef CONFIG_IWLWIFI_DEBUGFS
2241 if (ret == 0) {
2242 if (!priv->wowlan_sram)
2243 priv->wowlan_sram =
2244 kzalloc(priv->ucode_wowlan.data.len,
2245 GFP_KERNEL);
2246
2247 if (priv->wowlan_sram)
2248 _iwl_read_targ_mem_words(
2249 bus(priv), 0x800000, priv->wowlan_sram,
2250 priv->ucode_wowlan.data.len / 4);
2251 }
2252 #endif
2253 }
2254
2255 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2256 vif = ctx->vif;
2257
2258 priv->shrd->wowlan = false;
2259
2260 device_set_wakeup_enable(bus(priv)->dev, false);
2261
2262 iwlagn_prepare_restart(priv);
2263
2264 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2265 iwl_connection_init_rx_config(priv, ctx);
2266 iwlagn_set_rxon_chain(priv, ctx);
2267
2268 mutex_unlock(&priv->shrd->mutex);
2269 IWL_DEBUG_MAC80211(priv, "leave\n");
2270
2271 ieee80211_resume_disconnect(vif);
2272
2273 return 1;
2274 }
2275 #endif
2276
2277 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2278 {
2279 struct iwl_priv *priv = hw->priv;
2280
2281 IWL_DEBUG_MACDUMP(priv, "enter\n");
2282
2283 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2284 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2285
2286 if (iwlagn_tx_skb(priv, skb))
2287 dev_kfree_skb_any(skb);
2288
2289 IWL_DEBUG_MACDUMP(priv, "leave\n");
2290 }
2291
2292 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2293 struct ieee80211_vif *vif,
2294 struct ieee80211_key_conf *keyconf,
2295 struct ieee80211_sta *sta,
2296 u32 iv32, u16 *phase1key)
2297 {
2298 struct iwl_priv *priv = hw->priv;
2299
2300 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2301 }
2302
2303 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2304 struct ieee80211_vif *vif,
2305 struct ieee80211_sta *sta,
2306 struct ieee80211_key_conf *key)
2307 {
2308 struct iwl_priv *priv = hw->priv;
2309 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2310 struct iwl_rxon_context *ctx = vif_priv->ctx;
2311 int ret;
2312 bool is_default_wep_key = false;
2313
2314 IWL_DEBUG_MAC80211(priv, "enter\n");
2315
2316 if (iwlagn_mod_params.sw_crypto) {
2317 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2318 return -EOPNOTSUPP;
2319 }
2320
2321 /*
2322 * We could program these keys into the hardware as well, but we
2323 * don't expect much multicast traffic in IBSS and having keys
2324 * for more stations is probably more useful.
2325 *
2326 * Mark key TX-only and return 0.
2327 */
2328 if (vif->type == NL80211_IFTYPE_ADHOC &&
2329 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2330 key->hw_key_idx = WEP_INVALID_OFFSET;
2331 return 0;
2332 }
2333
2334 /* If they key was TX-only, accept deletion */
2335 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2336 return 0;
2337
2338 mutex_lock(&priv->shrd->mutex);
2339 iwl_scan_cancel_timeout(priv, 100);
2340
2341 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2342
2343 /*
2344 * If we are getting WEP group key and we didn't receive any key mapping
2345 * so far, we are in legacy wep mode (group key only), otherwise we are
2346 * in 1X mode.
2347 * In legacy wep mode, we use another host command to the uCode.
2348 */
2349 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2350 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2351 if (cmd == SET_KEY)
2352 is_default_wep_key = !ctx->key_mapping_keys;
2353 else
2354 is_default_wep_key =
2355 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2356 }
2357
2358
2359 switch (cmd) {
2360 case SET_KEY:
2361 if (is_default_wep_key) {
2362 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2363 break;
2364 }
2365 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2366 if (ret) {
2367 /*
2368 * can't add key for RX, but we don't need it
2369 * in the device for TX so still return 0
2370 */
2371 ret = 0;
2372 key->hw_key_idx = WEP_INVALID_OFFSET;
2373 }
2374
2375 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2376 break;
2377 case DISABLE_KEY:
2378 if (is_default_wep_key)
2379 ret = iwl_remove_default_wep_key(priv, ctx, key);
2380 else
2381 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2382
2383 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2384 break;
2385 default:
2386 ret = -EINVAL;
2387 }
2388
2389 mutex_unlock(&priv->shrd->mutex);
2390 IWL_DEBUG_MAC80211(priv, "leave\n");
2391
2392 return ret;
2393 }
2394
2395 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2396 struct ieee80211_vif *vif,
2397 enum ieee80211_ampdu_mlme_action action,
2398 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2399 u8 buf_size)
2400 {
2401 struct iwl_priv *priv = hw->priv;
2402 int ret = -EINVAL;
2403 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2404 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
2405
2406 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2407 sta->addr, tid);
2408
2409 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2410 return -EACCES;
2411
2412 IWL_DEBUG_MAC80211(priv, "enter\n");
2413 mutex_lock(&priv->shrd->mutex);
2414
2415 switch (action) {
2416 case IEEE80211_AMPDU_RX_START:
2417 IWL_DEBUG_HT(priv, "start Rx\n");
2418 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2419 break;
2420 case IEEE80211_AMPDU_RX_STOP:
2421 IWL_DEBUG_HT(priv, "stop Rx\n");
2422 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2423 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2424 ret = 0;
2425 break;
2426 case IEEE80211_AMPDU_TX_START:
2427 IWL_DEBUG_HT(priv, "start Tx\n");
2428 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2429 break;
2430 case IEEE80211_AMPDU_TX_STOP:
2431 IWL_DEBUG_HT(priv, "stop Tx\n");
2432 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2433 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2434 priv->agg_tids_count--;
2435 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2436 priv->agg_tids_count);
2437 }
2438 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2439 ret = 0;
2440 if (!priv->agg_tids_count && priv->cfg->ht_params &&
2441 priv->cfg->ht_params->use_rts_for_aggregation) {
2442 /*
2443 * switch off RTS/CTS if it was previously enabled
2444 */
2445 sta_priv->lq_sta.lq.general_params.flags &=
2446 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2447 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2448 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2449 }
2450 break;
2451 case IEEE80211_AMPDU_TX_OPERATIONAL:
2452 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2453
2454 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
2455 tid, buf_size);
2456
2457 /*
2458 * If the limit is 0, then it wasn't initialised yet,
2459 * use the default. We can do that since we take the
2460 * minimum below, and we don't want to go above our
2461 * default due to hardware restrictions.
2462 */
2463 if (sta_priv->max_agg_bufsize == 0)
2464 sta_priv->max_agg_bufsize =
2465 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2466
2467 /*
2468 * Even though in theory the peer could have different
2469 * aggregation reorder buffer sizes for different sessions,
2470 * our ucode doesn't allow for that and has a global limit
2471 * for each station. Therefore, use the minimum of all the
2472 * aggregation sessions and our default value.
2473 */
2474 sta_priv->max_agg_bufsize =
2475 min(sta_priv->max_agg_bufsize, buf_size);
2476
2477 if (priv->cfg->ht_params &&
2478 priv->cfg->ht_params->use_rts_for_aggregation) {
2479 /*
2480 * switch to RTS/CTS if it is the prefer protection
2481 * method for HT traffic
2482 */
2483
2484 sta_priv->lq_sta.lq.general_params.flags |=
2485 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2486 }
2487 priv->agg_tids_count++;
2488 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2489 priv->agg_tids_count);
2490
2491 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2492 sta_priv->max_agg_bufsize;
2493
2494 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2495 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2496
2497 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2498 sta->addr, tid);
2499 ret = 0;
2500 break;
2501 }
2502 mutex_unlock(&priv->shrd->mutex);
2503 IWL_DEBUG_MAC80211(priv, "leave\n");
2504 return ret;
2505 }
2506
2507 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2508 struct ieee80211_vif *vif,
2509 struct ieee80211_sta *sta)
2510 {
2511 struct iwl_priv *priv = hw->priv;
2512 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2513 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2514 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2515 int ret = 0;
2516 u8 sta_id;
2517
2518 IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n",
2519 sta->addr);
2520 mutex_lock(&priv->shrd->mutex);
2521 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2522 sta->addr);
2523 sta_priv->sta_id = IWL_INVALID_STATION;
2524
2525 atomic_set(&sta_priv->pending_frames, 0);
2526 if (vif->type == NL80211_IFTYPE_AP)
2527 sta_priv->client = true;
2528
2529 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2530 is_ap, sta, &sta_id);
2531 if (ret) {
2532 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2533 sta->addr, ret);
2534 /* Should we return success if return code is EEXIST ? */
2535 goto out;
2536 }
2537
2538 sta_priv->sta_id = sta_id;
2539
2540 /* Initialize rate scaling */
2541 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2542 sta->addr);
2543 iwl_rs_rate_init(priv, sta, sta_id);
2544 out:
2545 mutex_unlock(&priv->shrd->mutex);
2546 IWL_DEBUG_MAC80211(priv, "leave\n");
2547
2548 return ret;
2549 }
2550
2551 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2552 struct ieee80211_channel_switch *ch_switch)
2553 {
2554 struct iwl_priv *priv = hw->priv;
2555 const struct iwl_channel_info *ch_info;
2556 struct ieee80211_conf *conf = &hw->conf;
2557 struct ieee80211_channel *channel = ch_switch->channel;
2558 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2559 /*
2560 * MULTI-FIXME
2561 * When we add support for multiple interfaces, we need to
2562 * revisit this. The channel switch command in the device
2563 * only affects the BSS context, but what does that really
2564 * mean? And what if we get a CSA on the second interface?
2565 * This needs a lot of work.
2566 */
2567 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2568 u16 ch;
2569
2570 IWL_DEBUG_MAC80211(priv, "enter\n");
2571
2572 mutex_lock(&priv->shrd->mutex);
2573
2574 if (iwl_is_rfkill(priv->shrd))
2575 goto out;
2576
2577 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2578 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2579 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2580 goto out;
2581
2582 if (!iwl_is_associated_ctx(ctx))
2583 goto out;
2584
2585 if (!priv->cfg->lib->set_channel_switch)
2586 goto out;
2587
2588 ch = channel->hw_value;
2589 if (le16_to_cpu(ctx->active.channel) == ch)
2590 goto out;
2591
2592 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2593 if (!is_channel_valid(ch_info)) {
2594 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2595 goto out;
2596 }
2597
2598 spin_lock_irq(&priv->shrd->lock);
2599
2600 priv->current_ht_config.smps = conf->smps_mode;
2601
2602 /* Configure HT40 channels */
2603 ctx->ht.enabled = conf_is_ht(conf);
2604 if (ctx->ht.enabled) {
2605 if (conf_is_ht40_minus(conf)) {
2606 ctx->ht.extension_chan_offset =
2607 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2608 ctx->ht.is_40mhz = true;
2609 } else if (conf_is_ht40_plus(conf)) {
2610 ctx->ht.extension_chan_offset =
2611 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2612 ctx->ht.is_40mhz = true;
2613 } else {
2614 ctx->ht.extension_chan_offset =
2615 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2616 ctx->ht.is_40mhz = false;
2617 }
2618 } else
2619 ctx->ht.is_40mhz = false;
2620
2621 if ((le16_to_cpu(ctx->staging.channel) != ch))
2622 ctx->staging.flags = 0;
2623
2624 iwl_set_rxon_channel(priv, channel, ctx);
2625 iwl_set_rxon_ht(priv, ht_conf);
2626 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2627
2628 spin_unlock_irq(&priv->shrd->lock);
2629
2630 iwl_set_rate(priv);
2631 /*
2632 * at this point, staging_rxon has the
2633 * configuration for channel switch
2634 */
2635 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2636 priv->switch_channel = cpu_to_le16(ch);
2637 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2638 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2639 priv->switch_channel = 0;
2640 ieee80211_chswitch_done(ctx->vif, false);
2641 }
2642
2643 out:
2644 mutex_unlock(&priv->shrd->mutex);
2645 IWL_DEBUG_MAC80211(priv, "leave\n");
2646 }
2647
2648 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2649 unsigned int changed_flags,
2650 unsigned int *total_flags,
2651 u64 multicast)
2652 {
2653 struct iwl_priv *priv = hw->priv;
2654 __le32 filter_or = 0, filter_nand = 0;
2655 struct iwl_rxon_context *ctx;
2656
2657 #define CHK(test, flag) do { \
2658 if (*total_flags & (test)) \
2659 filter_or |= (flag); \
2660 else \
2661 filter_nand |= (flag); \
2662 } while (0)
2663
2664 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2665 changed_flags, *total_flags);
2666
2667 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2668 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2669 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2670 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2671
2672 #undef CHK
2673
2674 mutex_lock(&priv->shrd->mutex);
2675
2676 for_each_context(priv, ctx) {
2677 ctx->staging.filter_flags &= ~filter_nand;
2678 ctx->staging.filter_flags |= filter_or;
2679
2680 /*
2681 * Not committing directly because hardware can perform a scan,
2682 * but we'll eventually commit the filter flags change anyway.
2683 */
2684 }
2685
2686 mutex_unlock(&priv->shrd->mutex);
2687
2688 /*
2689 * Receiving all multicast frames is always enabled by the
2690 * default flags setup in iwl_connection_init_rx_config()
2691 * since we currently do not support programming multicast
2692 * filters into the device.
2693 */
2694 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2695 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2696 }
2697
2698 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2699 {
2700 struct iwl_priv *priv = hw->priv;
2701
2702 mutex_lock(&priv->shrd->mutex);
2703 IWL_DEBUG_MAC80211(priv, "enter\n");
2704
2705 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2706 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2707 goto done;
2708 }
2709 if (iwl_is_rfkill(priv->shrd)) {
2710 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2711 goto done;
2712 }
2713
2714 /*
2715 * mac80211 will not push any more frames for transmit
2716 * until the flush is completed
2717 */
2718 if (drop) {
2719 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2720 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2721 IWL_ERR(priv, "flush request fail\n");
2722 goto done;
2723 }
2724 }
2725 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2726 iwl_trans_wait_tx_queue_empty(trans(priv));
2727 done:
2728 mutex_unlock(&priv->shrd->mutex);
2729 IWL_DEBUG_MAC80211(priv, "leave\n");
2730 }
2731
2732 void iwlagn_disable_roc(struct iwl_priv *priv)
2733 {
2734 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2735
2736 lockdep_assert_held(&priv->shrd->mutex);
2737
2738 if (!priv->hw_roc_setup)
2739 return;
2740
2741 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2742 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2743
2744 priv->hw_roc_channel = NULL;
2745
2746 memset(ctx->staging.node_addr, 0, ETH_ALEN);
2747
2748 iwlagn_commit_rxon(priv, ctx);
2749
2750 ctx->is_active = false;
2751 priv->hw_roc_setup = false;
2752 }
2753
2754 static void iwlagn_disable_roc_work(struct work_struct *work)
2755 {
2756 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2757 hw_roc_disable_work.work);
2758
2759 mutex_lock(&priv->shrd->mutex);
2760 iwlagn_disable_roc(priv);
2761 mutex_unlock(&priv->shrd->mutex);
2762 }
2763
2764 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
2765 struct ieee80211_channel *channel,
2766 enum nl80211_channel_type channel_type,
2767 int duration)
2768 {
2769 struct iwl_priv *priv = hw->priv;
2770 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2771 int err = 0;
2772
2773 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2774 return -EOPNOTSUPP;
2775
2776 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2777 return -EOPNOTSUPP;
2778
2779 IWL_DEBUG_MAC80211(priv, "enter\n");
2780 mutex_lock(&priv->shrd->mutex);
2781
2782 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2783 err = -EBUSY;
2784 goto out;
2785 }
2786
2787 priv->hw_roc_channel = channel;
2788 priv->hw_roc_chantype = channel_type;
2789 priv->hw_roc_duration = duration;
2790 priv->hw_roc_start_notified = false;
2791 cancel_delayed_work(&priv->hw_roc_disable_work);
2792
2793 if (!ctx->is_active) {
2794 ctx->is_active = true;
2795 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2796 memcpy(ctx->staging.node_addr,
2797 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2798 ETH_ALEN);
2799 memcpy(ctx->staging.bssid_addr,
2800 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2801 ETH_ALEN);
2802 err = iwlagn_commit_rxon(priv, ctx);
2803 if (err)
2804 goto out;
2805 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2806 RXON_FILTER_PROMISC_MSK |
2807 RXON_FILTER_CTL2HOST_MSK;
2808
2809 err = iwlagn_commit_rxon(priv, ctx);
2810 if (err) {
2811 iwlagn_disable_roc(priv);
2812 goto out;
2813 }
2814 priv->hw_roc_setup = true;
2815 }
2816
2817 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2818 if (err)
2819 iwlagn_disable_roc(priv);
2820
2821 out:
2822 mutex_unlock(&priv->shrd->mutex);
2823 IWL_DEBUG_MAC80211(priv, "leave\n");
2824
2825 return err;
2826 }
2827
2828 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2829 {
2830 struct iwl_priv *priv = hw->priv;
2831
2832 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2833 return -EOPNOTSUPP;
2834
2835 IWL_DEBUG_MAC80211(priv, "enter\n");
2836 mutex_lock(&priv->shrd->mutex);
2837 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2838 iwlagn_disable_roc(priv);
2839 mutex_unlock(&priv->shrd->mutex);
2840 IWL_DEBUG_MAC80211(priv, "leave\n");
2841
2842 return 0;
2843 }
2844
2845 static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw,
2846 struct ieee80211_vif *vif,
2847 const u8 *bssid,
2848 enum ieee80211_tx_sync_type type)
2849 {
2850 struct iwl_priv *priv = hw->priv;
2851 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2852 struct iwl_rxon_context *ctx = vif_priv->ctx;
2853 int ret;
2854 u8 sta_id;
2855
2856 IWL_DEBUG_MAC80211(priv, "enter\n");
2857 mutex_lock(&priv->shrd->mutex);
2858
2859 if (iwl_is_associated_ctx(ctx)) {
2860 ret = 0;
2861 goto out;
2862 }
2863
2864 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2865 ret = -EBUSY;
2866 goto out;
2867 }
2868
2869 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
2870 if (ret)
2871 goto out;
2872
2873 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
2874 ret = -EIO;
2875 goto out_remove_sta;
2876 }
2877
2878 memcpy(ctx->bssid, bssid, ETH_ALEN);
2879 ctx->preauth_bssid = true;
2880
2881 ret = iwlagn_commit_rxon(priv, ctx);
2882
2883 if (ret == 0)
2884 goto out;
2885
2886 out_remove_sta:
2887 iwl_remove_station(priv, sta_id, bssid);
2888 out:
2889 mutex_unlock(&priv->shrd->mutex);
2890 IWL_DEBUG_MAC80211(priv, "leave\n");
2891
2892 return ret;
2893 }
2894
2895 static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw,
2896 struct ieee80211_vif *vif,
2897 const u8 *bssid,
2898 enum ieee80211_tx_sync_type type)
2899 {
2900 struct iwl_priv *priv = hw->priv;
2901 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2902 struct iwl_rxon_context *ctx = vif_priv->ctx;
2903
2904 IWL_DEBUG_MAC80211(priv, "enter\n");
2905 mutex_lock(&priv->shrd->mutex);
2906
2907 if (iwl_is_associated_ctx(ctx))
2908 goto out;
2909
2910 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
2911 ctx->preauth_bssid = false;
2912 /* no need to commit */
2913 out:
2914 mutex_unlock(&priv->shrd->mutex);
2915 IWL_DEBUG_MAC80211(priv, "leave\n");
2916 }
2917
2918 /*****************************************************************************
2919 *
2920 * driver setup and teardown
2921 *
2922 *****************************************************************************/
2923
2924 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2925 {
2926 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2927
2928 init_waitqueue_head(&priv->shrd->wait_command_queue);
2929
2930 INIT_WORK(&priv->restart, iwl_bg_restart);
2931 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2932 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2933 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2934 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2935 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2936 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2937 iwlagn_disable_roc_work);
2938
2939 iwl_setup_scan_deferred_work(priv);
2940
2941 if (priv->cfg->lib->bt_setup_deferred_work)
2942 priv->cfg->lib->bt_setup_deferred_work(priv);
2943
2944 init_timer(&priv->statistics_periodic);
2945 priv->statistics_periodic.data = (unsigned long)priv;
2946 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2947
2948 init_timer(&priv->ucode_trace);
2949 priv->ucode_trace.data = (unsigned long)priv;
2950 priv->ucode_trace.function = iwl_bg_ucode_trace;
2951
2952 init_timer(&priv->watchdog);
2953 priv->watchdog.data = (unsigned long)priv;
2954 priv->watchdog.function = iwl_bg_watchdog;
2955 }
2956
2957 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2958 {
2959 if (priv->cfg->lib->cancel_deferred_work)
2960 priv->cfg->lib->cancel_deferred_work(priv);
2961
2962 cancel_work_sync(&priv->run_time_calib_work);
2963 cancel_work_sync(&priv->beacon_update);
2964
2965 iwl_cancel_scan_deferred_work(priv);
2966
2967 cancel_work_sync(&priv->bt_full_concurrency);
2968 cancel_work_sync(&priv->bt_runtime_config);
2969 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
2970
2971 del_timer_sync(&priv->statistics_periodic);
2972 del_timer_sync(&priv->ucode_trace);
2973 }
2974
2975 static void iwl_init_hw_rates(struct iwl_priv *priv,
2976 struct ieee80211_rate *rates)
2977 {
2978 int i;
2979
2980 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2981 rates[i].bitrate = iwl_rates[i].ieee * 5;
2982 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2983 rates[i].hw_value_short = i;
2984 rates[i].flags = 0;
2985 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2986 /*
2987 * If CCK != 1M then set short preamble rate flag.
2988 */
2989 rates[i].flags |=
2990 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2991 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2992 }
2993 }
2994 }
2995
2996 static int iwl_init_drv(struct iwl_priv *priv)
2997 {
2998 int ret;
2999
3000 spin_lock_init(&priv->shrd->sta_lock);
3001
3002 mutex_init(&priv->shrd->mutex);
3003
3004 priv->ieee_channels = NULL;
3005 priv->ieee_rates = NULL;
3006 priv->band = IEEE80211_BAND_2GHZ;
3007
3008 priv->iw_mode = NL80211_IFTYPE_STATION;
3009 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3010 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3011 priv->agg_tids_count = 0;
3012
3013 /* initialize force reset */
3014 priv->force_reset[IWL_RF_RESET].reset_duration =
3015 IWL_DELAY_NEXT_FORCE_RF_RESET;
3016 priv->force_reset[IWL_FW_RESET].reset_duration =
3017 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3018
3019 priv->rx_statistics_jiffies = jiffies;
3020
3021 /* Choose which receivers/antennas to use */
3022 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3023
3024 iwl_init_scan_params(priv);
3025
3026 /* init bt coex */
3027 if (priv->cfg->bt_params &&
3028 priv->cfg->bt_params->advanced_bt_coexist) {
3029 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3030 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3031 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3032 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3033 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3034 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3035 }
3036
3037 ret = iwl_init_channel_map(priv);
3038 if (ret) {
3039 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3040 goto err;
3041 }
3042
3043 ret = iwl_init_geos(priv);
3044 if (ret) {
3045 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3046 goto err_free_channel_map;
3047 }
3048 iwl_init_hw_rates(priv, priv->ieee_rates);
3049
3050 return 0;
3051
3052 err_free_channel_map:
3053 iwl_free_channel_map(priv);
3054 err:
3055 return ret;
3056 }
3057
3058 static void iwl_uninit_drv(struct iwl_priv *priv)
3059 {
3060 iwl_calib_free_results(priv);
3061 iwl_free_geos(priv);
3062 iwl_free_channel_map(priv);
3063 if (priv->tx_cmd_pool)
3064 kmem_cache_destroy(priv->tx_cmd_pool);
3065 kfree(priv->scan_cmd);
3066 kfree(priv->beacon_cmd);
3067 #ifdef CONFIG_IWLWIFI_DEBUGFS
3068 kfree(priv->wowlan_sram);
3069 #endif
3070 }
3071
3072 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
3073 enum ieee80211_rssi_event rssi_event)
3074 {
3075 struct iwl_priv *priv = hw->priv;
3076
3077 IWL_DEBUG_MAC80211(priv, "enter\n");
3078 mutex_lock(&priv->shrd->mutex);
3079
3080 if (priv->cfg->bt_params &&
3081 priv->cfg->bt_params->advanced_bt_coexist) {
3082 if (rssi_event == RSSI_EVENT_LOW)
3083 priv->bt_enable_pspoll = true;
3084 else if (rssi_event == RSSI_EVENT_HIGH)
3085 priv->bt_enable_pspoll = false;
3086
3087 iwlagn_send_advance_bt_config(priv);
3088 } else {
3089 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3090 "ignoring RSSI callback\n");
3091 }
3092
3093 mutex_unlock(&priv->shrd->mutex);
3094 IWL_DEBUG_MAC80211(priv, "leave\n");
3095 }
3096
3097 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
3098 struct ieee80211_sta *sta, bool set)
3099 {
3100 struct iwl_priv *priv = hw->priv;
3101
3102 queue_work(priv->shrd->workqueue, &priv->beacon_update);
3103
3104 return 0;
3105 }
3106
3107 struct ieee80211_ops iwlagn_hw_ops = {
3108 .tx = iwlagn_mac_tx,
3109 .start = iwlagn_mac_start,
3110 .stop = iwlagn_mac_stop,
3111 #ifdef CONFIG_PM_SLEEP
3112 .suspend = iwlagn_mac_suspend,
3113 .resume = iwlagn_mac_resume,
3114 #endif
3115 .add_interface = iwlagn_mac_add_interface,
3116 .remove_interface = iwlagn_mac_remove_interface,
3117 .change_interface = iwlagn_mac_change_interface,
3118 .config = iwlagn_mac_config,
3119 .configure_filter = iwlagn_configure_filter,
3120 .set_key = iwlagn_mac_set_key,
3121 .update_tkip_key = iwlagn_mac_update_tkip_key,
3122 .set_rekey_data = iwlagn_mac_set_rekey_data,
3123 .conf_tx = iwlagn_mac_conf_tx,
3124 .bss_info_changed = iwlagn_bss_info_changed,
3125 .ampdu_action = iwlagn_mac_ampdu_action,
3126 .hw_scan = iwlagn_mac_hw_scan,
3127 .sta_notify = iwlagn_mac_sta_notify,
3128 .sta_add = iwlagn_mac_sta_add,
3129 .sta_remove = iwlagn_mac_sta_remove,
3130 .channel_switch = iwlagn_mac_channel_switch,
3131 .flush = iwlagn_mac_flush,
3132 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
3133 .remain_on_channel = iwlagn_mac_remain_on_channel,
3134 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
3135 .rssi_callback = iwlagn_mac_rssi_callback,
3136 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
3137 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
3138 .tx_sync = iwlagn_mac_tx_sync,
3139 .finish_tx_sync = iwlagn_mac_finish_tx_sync,
3140 .set_tim = iwlagn_mac_set_tim,
3141 };
3142
3143 static u32 iwl_hw_detect(struct iwl_priv *priv)
3144 {
3145 return iwl_read32(bus(priv), CSR_HW_REV);
3146 }
3147
3148 /* Size of one Rx buffer in host DRAM */
3149 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3150 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3151
3152 static int iwl_set_hw_params(struct iwl_priv *priv)
3153 {
3154 if (iwlagn_mod_params.amsdu_size_8K)
3155 hw_params(priv).rx_page_order =
3156 get_order(IWL_RX_BUF_SIZE_8K);
3157 else
3158 hw_params(priv).rx_page_order =
3159 get_order(IWL_RX_BUF_SIZE_4K);
3160
3161 if (iwlagn_mod_params.disable_11n)
3162 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3163
3164 hw_params(priv).num_ampdu_queues =
3165 priv->cfg->base_params->num_of_ampdu_queues;
3166 hw_params(priv).shadow_reg_enable =
3167 priv->cfg->base_params->shadow_reg_enable;
3168 hw_params(priv).sku = priv->cfg->sku;
3169 hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
3170
3171 /* Device-specific setup */
3172 return priv->cfg->lib->set_hw_params(priv);
3173 }
3174
3175 /* This function both allocates and initializes hw and priv. */
3176 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3177 {
3178 struct iwl_priv *priv;
3179 /* mac80211 allocates memory for this device instance, including
3180 * space for this driver's private structure */
3181 struct ieee80211_hw *hw;
3182
3183 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3184 if (hw == NULL) {
3185 pr_err("%s: Can not allocate network device\n",
3186 cfg->name);
3187 goto out;
3188 }
3189
3190 priv = hw->priv;
3191 priv->hw = hw;
3192
3193 out:
3194 return hw;
3195 }
3196
3197 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3198 struct iwl_cfg *cfg)
3199 {
3200 int err = 0;
3201 struct iwl_priv *priv;
3202 struct ieee80211_hw *hw;
3203 u16 num_mac;
3204 u32 hw_rev;
3205
3206 /************************
3207 * 1. Allocating HW data
3208 ************************/
3209 hw = iwl_alloc_all(cfg);
3210 if (!hw) {
3211 err = -ENOMEM;
3212 goto out;
3213 }
3214
3215 priv = hw->priv;
3216 priv->shrd = &priv->_shrd;
3217 bus->shrd = priv->shrd;
3218 priv->shrd->bus = bus;
3219 priv->shrd->priv = priv;
3220
3221 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3222 if (priv->shrd->trans == NULL) {
3223 err = -ENOMEM;
3224 goto out_free_traffic_mem;
3225 }
3226
3227 /* At this point both hw and priv are allocated. */
3228
3229 SET_IEEE80211_DEV(hw, bus(priv)->dev);
3230
3231 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3232 priv->cfg = cfg;
3233
3234 /* is antenna coupling more than 35dB ? */
3235 priv->bt_ant_couple_ok =
3236 (iwlagn_mod_params.ant_coupling >
3237 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3238 true : false;
3239
3240 /* enable/disable bt channel inhibition */
3241 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3242 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3243 (priv->bt_ch_announce) ? "On" : "Off");
3244
3245 if (iwl_alloc_traffic_mem(priv))
3246 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3247
3248 /* these spin locks will be used in apm_ops.init and EEPROM access
3249 * we should init now
3250 */
3251 spin_lock_init(&bus(priv)->reg_lock);
3252 spin_lock_init(&priv->shrd->lock);
3253
3254 /*
3255 * stop and reset the on-board processor just in case it is in a
3256 * strange state ... like being left stranded by a primary kernel
3257 * and this is now the kdump kernel trying to start up
3258 */
3259 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3260
3261 /***********************
3262 * 3. Read REV register
3263 ***********************/
3264 hw_rev = iwl_hw_detect(priv);
3265 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3266 priv->cfg->name, hw_rev);
3267
3268 err = iwl_trans_request_irq(trans(priv));
3269 if (err)
3270 goto out_free_trans;
3271
3272 if (iwl_trans_prepare_card_hw(trans(priv))) {
3273 err = -EIO;
3274 IWL_WARN(priv, "Failed, HW not ready\n");
3275 goto out_free_trans;
3276 }
3277
3278 /*****************
3279 * 4. Read EEPROM
3280 *****************/
3281 /* Read the EEPROM */
3282 err = iwl_eeprom_init(priv, hw_rev);
3283 if (err) {
3284 IWL_ERR(priv, "Unable to init EEPROM\n");
3285 goto out_free_trans;
3286 }
3287 err = iwl_eeprom_check_version(priv);
3288 if (err)
3289 goto out_free_eeprom;
3290
3291 err = iwl_eeprom_check_sku(priv);
3292 if (err)
3293 goto out_free_eeprom;
3294
3295 /* extract MAC Address */
3296 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3297 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3298 priv->hw->wiphy->addresses = priv->addresses;
3299 priv->hw->wiphy->n_addresses = 1;
3300 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3301 if (num_mac > 1) {
3302 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3303 ETH_ALEN);
3304 priv->addresses[1].addr[5]++;
3305 priv->hw->wiphy->n_addresses++;
3306 }
3307
3308 /************************
3309 * 5. Setup HW constants
3310 ************************/
3311 if (iwl_set_hw_params(priv)) {
3312 err = -ENOENT;
3313 IWL_ERR(priv, "failed to set hw parameters\n");
3314 goto out_free_eeprom;
3315 }
3316
3317 /*******************
3318 * 6. Setup priv
3319 *******************/
3320
3321 err = iwl_init_drv(priv);
3322 if (err)
3323 goto out_free_eeprom;
3324 /* At this point both hw and priv are initialized. */
3325
3326 /********************
3327 * 7. Setup services
3328 ********************/
3329 iwl_setup_deferred_work(priv);
3330 iwl_setup_rx_handlers(priv);
3331 iwl_testmode_init(priv);
3332
3333 /*********************************************
3334 * 8. Enable interrupts
3335 *********************************************/
3336
3337 iwl_enable_rfkill_int(priv);
3338
3339 /* If platform's RF_KILL switch is NOT set to KILL */
3340 if (iwl_read32(bus(priv),
3341 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3342 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3343 else
3344 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3345
3346 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3347 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3348
3349 iwl_power_initialize(priv);
3350 iwl_tt_initialize(priv);
3351
3352 init_completion(&priv->firmware_loading_complete);
3353
3354 err = iwl_request_firmware(priv, true);
3355 if (err)
3356 goto out_destroy_workqueue;
3357
3358 return 0;
3359
3360 out_destroy_workqueue:
3361 destroy_workqueue(priv->shrd->workqueue);
3362 priv->shrd->workqueue = NULL;
3363 iwl_uninit_drv(priv);
3364 out_free_eeprom:
3365 iwl_eeprom_free(priv);
3366 out_free_trans:
3367 iwl_trans_free(trans(priv));
3368 out_free_traffic_mem:
3369 iwl_free_traffic_mem(priv);
3370 ieee80211_free_hw(priv->hw);
3371 out:
3372 return err;
3373 }
3374
3375 void __devexit iwl_remove(struct iwl_priv * priv)
3376 {
3377 wait_for_completion(&priv->firmware_loading_complete);
3378
3379 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3380
3381 iwl_dbgfs_unregister(priv);
3382
3383 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
3384 * to be called and iwl_down since we are removing the device
3385 * we need to set STATUS_EXIT_PENDING bit.
3386 */
3387 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3388
3389 iwl_testmode_cleanup(priv);
3390 iwl_leds_exit(priv);
3391
3392 if (priv->mac80211_registered) {
3393 ieee80211_unregister_hw(priv->hw);
3394 priv->mac80211_registered = 0;
3395 }
3396
3397 iwl_tt_exit(priv);
3398
3399 /*This will stop the queues, move the device to low power state */
3400 iwl_trans_stop_device(trans(priv));
3401
3402 iwl_dealloc_ucode(priv);
3403
3404 iwl_eeprom_free(priv);
3405
3406 /*netif_stop_queue(dev); */
3407 flush_workqueue(priv->shrd->workqueue);
3408
3409 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
3410 * priv->shrd->workqueue... so we can't take down the workqueue
3411 * until now... */
3412 destroy_workqueue(priv->shrd->workqueue);
3413 priv->shrd->workqueue = NULL;
3414 iwl_free_traffic_mem(priv);
3415
3416 iwl_trans_free(trans(priv));
3417
3418 iwl_uninit_drv(priv);
3419
3420 dev_kfree_skb(priv->beacon_skb);
3421
3422 ieee80211_free_hw(priv->hw);
3423 }
3424
3425
3426 /*****************************************************************************
3427 *
3428 * driver and module entry point
3429 *
3430 *****************************************************************************/
3431 static int __init iwl_init(void)
3432 {
3433
3434 int ret;
3435 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3436 pr_info(DRV_COPYRIGHT "\n");
3437
3438 ret = iwlagn_rate_control_register();
3439 if (ret) {
3440 pr_err("Unable to register rate control algorithm: %d\n", ret);
3441 return ret;
3442 }
3443
3444 ret = iwl_pci_register_driver();
3445
3446 if (ret)
3447 goto error_register;
3448 return ret;
3449
3450 error_register:
3451 iwlagn_rate_control_unregister();
3452 return ret;
3453 }
3454
3455 static void __exit iwl_exit(void)
3456 {
3457 iwl_pci_unregister_driver();
3458 iwlagn_rate_control_unregister();
3459 }
3460
3461 module_exit(iwl_exit);
3462 module_init(iwl_init);
3463
3464 #ifdef CONFIG_IWLWIFI_DEBUG
3465 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3466 S_IRUGO | S_IWUSR);
3467 MODULE_PARM_DESC(debug, "debug output mask");
3468 #endif
3469
3470 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3471 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3472 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3473 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3474 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3475 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3476 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3477 int, S_IRUGO);
3478 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3479 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3480 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3481
3482 module_param_named(ucode_alternative,
3483 iwlagn_mod_params.wanted_ucode_alternative,
3484 int, S_IRUGO);
3485 MODULE_PARM_DESC(ucode_alternative,
3486 "specify ucode alternative to use from ucode file");
3487
3488 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3489 int, S_IRUGO);
3490 MODULE_PARM_DESC(antenna_coupling,
3491 "specify antenna coupling in dB (defualt: 0 dB)");
3492
3493 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3494 bool, S_IRUGO);
3495 MODULE_PARM_DESC(bt_ch_inhibition,
3496 "Enable BT channel inhibition (default: enable)");
3497
3498 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3499 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3500
3501 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3502 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3503
3504 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3505 MODULE_PARM_DESC(wd_disable,
3506 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3507
3508 /*
3509 * set bt_coex_active to true, uCode will do kill/defer
3510 * every time the priority line is asserted (BT is sending signals on the
3511 * priority line in the PCIx).
3512 * set bt_coex_active to false, uCode will ignore the BT activity and
3513 * perform the normal operation
3514 *
3515 * User might experience transmit issue on some platform due to WiFi/BT
3516 * co-exist problem. The possible behaviors are:
3517 * Able to scan and finding all the available AP
3518 * Not able to associate with any AP
3519 * On those platforms, WiFi communication can be restored by set
3520 * "bt_coex_active" module parameter to "false"
3521 *
3522 * default: bt_coex_active = true (BT_COEX_ENABLE)
3523 */
3524 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3525 bool, S_IRUGO);
3526 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3527
3528 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3529 MODULE_PARM_DESC(led_mode, "0=system default, "
3530 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3531
3532 module_param_named(power_save, iwlagn_mod_params.power_save,
3533 bool, S_IRUGO);
3534 MODULE_PARM_DESC(power_save,
3535 "enable WiFi power management (default: disable)");
3536
3537 module_param_named(power_level, iwlagn_mod_params.power_level,
3538 int, S_IRUGO);
3539 MODULE_PARM_DESC(power_level,
3540 "default power save level (range from 1 - 5, default: 1)");
3541
3542 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3543 bool, S_IRUGO);
3544 MODULE_PARM_DESC(auto_agg,
3545 "enable agg w/o check traffic load (default: enable)");
3546
3547 /*
3548 * For now, keep using power level 1 instead of automatically
3549 * adjusting ...
3550 */
3551 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3552 bool, S_IRUGO);
3553 MODULE_PARM_DESC(no_sleep_autoadjust,
3554 "don't automatically adjust sleep level "
3555 "according to maximum network latency (default: true)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree