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Merge branch 'master' of git://git.infradead.org/users/linville/wireless
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob6def1c2727757f6ccb2aa4c33b416681e84b21e7
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <linux/if_arp.h>
41
42 #include <net/mac80211.h>
43
44 #include <asm/div64.h>
45
46 #include "iwl-eeprom.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-helpers.h"
51 #include "iwl-sta.h"
52 #include "iwl-agn-calib.h"
53 #include "iwl-agn.h"
54 #include "iwl-shared.h"
55 #include "iwl-bus.h"
56 #include "iwl-trans.h"
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 */
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #define DRV_VERSION IWLWIFI_VERSION VD
76
77
78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
79 MODULE_VERSION(DRV_VERSION);
80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
81 MODULE_LICENSE("GPL");
82
83 void iwl_update_chain_flags(struct iwl_priv *priv)
84 {
85 struct iwl_rxon_context *ctx;
86
87 for_each_context(priv, ctx) {
88 iwlagn_set_rxon_chain(priv, ctx);
89 if (ctx->active.rx_chain != ctx->staging.rx_chain)
90 iwlagn_commit_rxon(priv, ctx);
91 }
92 }
93
94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
96 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
98 {
99 u16 tim_idx;
100 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
101
102 /*
103 * The index is relative to frame start but we start looking at the
104 * variable-length part of the beacon.
105 */
106 tim_idx = mgmt->u.beacon.variable - beacon;
107
108 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
109 while ((tim_idx < (frame_size - 2)) &&
110 (beacon[tim_idx] != WLAN_EID_TIM))
111 tim_idx += beacon[tim_idx+1] + 2;
112
113 /* If TIM field was found, set variables */
114 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
115 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
116 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
117 } else
118 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
119 }
120
121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
122 {
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
126 .flags = CMD_SYNC,
127 };
128 struct ieee80211_tx_info *info;
129 u32 frame_size;
130 u32 rate_flags;
131 u32 rate;
132
133 /*
134 * We have to set up the TX command, the TX Beacon command, and the
135 * beacon contents.
136 */
137
138 lockdep_assert_held(&priv->shrd->mutex);
139
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
142 return 0;
143 }
144
145 if (WARN_ON(!priv->beacon_skb))
146 return -EINVAL;
147
148 /* Allocate beacon command */
149 if (!priv->beacon_cmd)
150 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
151 tx_beacon_cmd = priv->beacon_cmd;
152 if (!tx_beacon_cmd)
153 return -ENOMEM;
154
155 frame_size = priv->beacon_skb->len;
156
157 /* Set up TX command fields */
158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
160 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
161 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
162 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
163
164 /* Set up TX beacon command fields */
165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
166 frame_size);
167
168 /* Set up packet rate and flags */
169 info = IEEE80211_SKB_CB(priv->beacon_skb);
170
171 /*
172 * Let's set up the rate at least somewhat correctly;
173 * it will currently not actually be used by the uCode,
174 * it uses the broadcast station's rate instead.
175 */
176 if (info->control.rates[0].idx < 0 ||
177 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
178 rate = 0;
179 else
180 rate = info->control.rates[0].idx;
181
182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
183 hw_params(priv).valid_tx_ant);
184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
185
186 /* In mac80211, rates for 5 GHz start at 0 */
187 if (info->band == IEEE80211_BAND_5GHZ)
188 rate += IWL_FIRST_OFDM_RATE;
189 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
190 rate_flags |= RATE_MCS_CCK_MSK;
191
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
194
195 /* Submit command */
196 cmd.len[0] = sizeof(*tx_beacon_cmd);
197 cmd.data[0] = tx_beacon_cmd;
198 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
199 cmd.len[1] = frame_size;
200 cmd.data[1] = priv->beacon_skb->data;
201 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
202
203 return iwl_trans_send_cmd(trans(priv), &cmd);
204 }
205
206 static void iwl_bg_beacon_update(struct work_struct *work)
207 {
208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
210 struct sk_buff *beacon;
211
212 mutex_lock(&priv->shrd->mutex);
213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
215 goto out;
216 }
217
218 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
219 /*
220 * The ucode will send beacon notifications even in
221 * IBSS mode, but we don't want to process them. But
222 * we need to defer the type check to here due to
223 * requiring locking around the beacon_ctx access.
224 */
225 goto out;
226 }
227
228 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
229 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
230 if (!beacon) {
231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
232 goto out;
233 }
234
235 /* new beacon skb is allocated every time; dispose previous.*/
236 dev_kfree_skb(priv->beacon_skb);
237
238 priv->beacon_skb = beacon;
239
240 iwlagn_send_beacon_cmd(priv);
241 out:
242 mutex_unlock(&priv->shrd->mutex);
243 }
244
245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
246 {
247 struct iwl_priv *priv =
248 container_of(work, struct iwl_priv, bt_runtime_config);
249
250 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
251 return;
252
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv->shrd))
255 return;
256 iwlagn_send_advance_bt_config(priv);
257 }
258
259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
260 {
261 struct iwl_priv *priv =
262 container_of(work, struct iwl_priv, bt_full_concurrency);
263 struct iwl_rxon_context *ctx;
264
265 mutex_lock(&priv->shrd->mutex);
266
267 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
268 goto out;
269
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv->shrd))
272 goto out;
273
274 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
275 priv->bt_full_concurrent ?
276 "full concurrency" : "3-wire");
277
278 /*
279 * LQ & RXON updated cmds must be sent before BT Config cmd
280 * to avoid 3-wire collisions
281 */
282 for_each_context(priv, ctx) {
283 iwlagn_set_rxon_chain(priv, ctx);
284 iwlagn_commit_rxon(priv, ctx);
285 }
286
287 iwlagn_send_advance_bt_config(priv);
288 out:
289 mutex_unlock(&priv->shrd->mutex);
290 }
291
292 /**
293 * iwl_bg_statistics_periodic - Timer callback to queue statistics
294 *
295 * This callback is provided in order to send a statistics request.
296 *
297 * This timer function is continually reset to execute within
298 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
299 * was received. We need to ensure we receive the statistics in order
300 * to update the temperature used for calibrating the TXPOWER.
301 */
302 static void iwl_bg_statistics_periodic(unsigned long data)
303 {
304 struct iwl_priv *priv = (struct iwl_priv *)data;
305
306 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
307 return;
308
309 /* dont send host command if rf-kill is on */
310 if (!iwl_is_ready_rf(priv->shrd))
311 return;
312
313 iwl_send_statistics_request(priv, CMD_ASYNC, false);
314 }
315
316
317 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
318 u32 start_idx, u32 num_events,
319 u32 mode)
320 {
321 u32 i;
322 u32 ptr; /* SRAM byte address of log data */
323 u32 ev, time, data; /* event log data */
324 unsigned long reg_flags;
325
326 if (mode == 0)
327 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
328 else
329 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
330
331 /* Make sure device is powered up for SRAM reads */
332 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
333 if (iwl_grab_nic_access(bus(priv))) {
334 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
335 return;
336 }
337
338 /* Set starting address; reads will auto-increment */
339 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
340 rmb();
341
342 /*
343 * "time" is actually "data" for mode 0 (no timestamp).
344 * place event id # at far right for easier visual parsing.
345 */
346 for (i = 0; i < num_events; i++) {
347 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
348 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
349 if (mode == 0) {
350 trace_iwlwifi_dev_ucode_cont_event(priv,
351 0, time, ev);
352 } else {
353 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
354 trace_iwlwifi_dev_ucode_cont_event(priv,
355 time, data, ev);
356 }
357 }
358 /* Allow device to power down */
359 iwl_release_nic_access(bus(priv));
360 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
361 }
362
363 static void iwl_continuous_event_trace(struct iwl_priv *priv)
364 {
365 u32 capacity; /* event log capacity in # entries */
366 u32 base; /* SRAM byte address of event log header */
367 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
368 u32 num_wraps; /* # times uCode wrapped to top of log */
369 u32 next_entry; /* index of next entry to be written by uCode */
370
371 base = priv->device_pointers.error_event_table;
372 if (iwlagn_hw_valid_rtc_data_addr(base)) {
373 capacity = iwl_read_targ_mem(bus(priv), base);
374 num_wraps = iwl_read_targ_mem(bus(priv),
375 base + (2 * sizeof(u32)));
376 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
377 next_entry = iwl_read_targ_mem(bus(priv),
378 base + (3 * sizeof(u32)));
379 } else
380 return;
381
382 if (num_wraps == priv->event_log.num_wraps) {
383 iwl_print_cont_event_trace(priv,
384 base, priv->event_log.next_entry,
385 next_entry - priv->event_log.next_entry,
386 mode);
387 priv->event_log.non_wraps_count++;
388 } else {
389 if ((num_wraps - priv->event_log.num_wraps) > 1)
390 priv->event_log.wraps_more_count++;
391 else
392 priv->event_log.wraps_once_count++;
393 trace_iwlwifi_dev_ucode_wrap_event(priv,
394 num_wraps - priv->event_log.num_wraps,
395 next_entry, priv->event_log.next_entry);
396 if (next_entry < priv->event_log.next_entry) {
397 iwl_print_cont_event_trace(priv, base,
398 priv->event_log.next_entry,
399 capacity - priv->event_log.next_entry,
400 mode);
401
402 iwl_print_cont_event_trace(priv, base, 0,
403 next_entry, mode);
404 } else {
405 iwl_print_cont_event_trace(priv, base,
406 next_entry, capacity - next_entry,
407 mode);
408
409 iwl_print_cont_event_trace(priv, base, 0,
410 next_entry, mode);
411 }
412 }
413 priv->event_log.num_wraps = num_wraps;
414 priv->event_log.next_entry = next_entry;
415 }
416
417 /**
418 * iwl_bg_ucode_trace - Timer callback to log ucode event
419 *
420 * The timer is continually set to execute every
421 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
422 * this function is to perform continuous uCode event logging operation
423 * if enabled
424 */
425 static void iwl_bg_ucode_trace(unsigned long data)
426 {
427 struct iwl_priv *priv = (struct iwl_priv *)data;
428
429 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
430 return;
431
432 if (priv->event_log.ucode_trace) {
433 iwl_continuous_event_trace(priv);
434 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
435 mod_timer(&priv->ucode_trace,
436 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
437 }
438 }
439
440 static void iwl_bg_tx_flush(struct work_struct *work)
441 {
442 struct iwl_priv *priv =
443 container_of(work, struct iwl_priv, tx_flush);
444
445 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
446 return;
447
448 /* do nothing if rf-kill is on */
449 if (!iwl_is_ready_rf(priv->shrd))
450 return;
451
452 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
453 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
454 }
455
456 /******************************************************************************
457 *
458 * uCode download functions
459 *
460 ******************************************************************************/
461
462 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
463 {
464 if (desc->v_addr)
465 dma_free_coherent(priv->bus->dev, desc->len,
466 desc->v_addr, desc->p_addr);
467 desc->v_addr = NULL;
468 desc->len = 0;
469 }
470
471 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
472 {
473 iwl_free_fw_desc(priv, &img->code);
474 iwl_free_fw_desc(priv, &img->data);
475 }
476
477 static void iwl_dealloc_ucode(struct iwl_priv *priv)
478 {
479 iwl_free_fw_img(priv, &priv->ucode_rt);
480 iwl_free_fw_img(priv, &priv->ucode_init);
481 iwl_free_fw_img(priv, &priv->ucode_wowlan);
482 }
483
484 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
485 const void *data, size_t len)
486 {
487 if (!len) {
488 desc->v_addr = NULL;
489 return -EINVAL;
490 }
491
492 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
493 &desc->p_addr, GFP_KERNEL);
494 if (!desc->v_addr)
495 return -ENOMEM;
496
497 desc->len = len;
498 memcpy(desc->v_addr, data, len);
499 return 0;
500 }
501
502 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
503 {
504 int i;
505
506 /*
507 * The default context is always valid,
508 * the PAN context depends on uCode.
509 */
510 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
511 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
512 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
513
514 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
515 priv->contexts[i].ctxid = i;
516
517 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
518 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
519 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
520 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
521 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
522 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
523 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
524 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
525 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
526 BIT(NL80211_IFTYPE_ADHOC);
527 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
528 BIT(NL80211_IFTYPE_STATION);
529 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
530 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
531 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
532 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
533
534 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
535 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
536 REPLY_WIPAN_RXON_TIMING;
537 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
538 REPLY_WIPAN_RXON_ASSOC;
539 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
540 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
541 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
542 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
543 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
544 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
545 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
546
547 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
548 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
549 BIT(NL80211_IFTYPE_P2P_CLIENT) |
550 BIT(NL80211_IFTYPE_P2P_GO);
551
552 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
553 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
554 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
555
556 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
557 }
558
559
560 struct iwlagn_ucode_capabilities {
561 u32 max_probe_length;
562 u32 standard_phy_calibration_size;
563 u32 flags;
564 };
565
566 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
567 static int iwl_mac_setup_register(struct iwl_priv *priv,
568 struct iwlagn_ucode_capabilities *capa);
569
570 #define UCODE_EXPERIMENTAL_INDEX 100
571 #define UCODE_EXPERIMENTAL_TAG "exp"
572
573 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
574 {
575 const char *name_pre = priv->cfg->fw_name_pre;
576 char tag[8];
577
578 if (first) {
579 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
580 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
581 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
582 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
583 #endif
584 priv->fw_index = priv->cfg->ucode_api_max;
585 sprintf(tag, "%d", priv->fw_index);
586 } else {
587 priv->fw_index--;
588 sprintf(tag, "%d", priv->fw_index);
589 }
590
591 if (priv->fw_index < priv->cfg->ucode_api_min) {
592 IWL_ERR(priv, "no suitable firmware found!\n");
593 return -ENOENT;
594 }
595
596 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
597
598 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
599 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
600 ? "EXPERIMENTAL " : "",
601 priv->firmware_name);
602
603 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
604 priv->bus->dev,
605 GFP_KERNEL, priv, iwl_ucode_callback);
606 }
607
608 struct iwlagn_firmware_pieces {
609 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
610 size_t inst_size, data_size, init_size, init_data_size,
611 wowlan_inst_size, wowlan_data_size;
612
613 u32 build;
614
615 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
616 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
617 };
618
619 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
620 const struct firmware *ucode_raw,
621 struct iwlagn_firmware_pieces *pieces)
622 {
623 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
624 u32 api_ver, hdr_size;
625 const u8 *src;
626
627 priv->ucode_ver = le32_to_cpu(ucode->ver);
628 api_ver = IWL_UCODE_API(priv->ucode_ver);
629
630 switch (api_ver) {
631 default:
632 hdr_size = 28;
633 if (ucode_raw->size < hdr_size) {
634 IWL_ERR(priv, "File size too small!\n");
635 return -EINVAL;
636 }
637 pieces->build = le32_to_cpu(ucode->u.v2.build);
638 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
639 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
640 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
641 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
642 src = ucode->u.v2.data;
643 break;
644 case 0:
645 case 1:
646 case 2:
647 hdr_size = 24;
648 if (ucode_raw->size < hdr_size) {
649 IWL_ERR(priv, "File size too small!\n");
650 return -EINVAL;
651 }
652 pieces->build = 0;
653 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
654 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
655 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
656 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
657 src = ucode->u.v1.data;
658 break;
659 }
660
661 /* Verify size of file vs. image size info in file's header */
662 if (ucode_raw->size != hdr_size + pieces->inst_size +
663 pieces->data_size + pieces->init_size +
664 pieces->init_data_size) {
665
666 IWL_ERR(priv,
667 "uCode file size %d does not match expected size\n",
668 (int)ucode_raw->size);
669 return -EINVAL;
670 }
671
672 pieces->inst = src;
673 src += pieces->inst_size;
674 pieces->data = src;
675 src += pieces->data_size;
676 pieces->init = src;
677 src += pieces->init_size;
678 pieces->init_data = src;
679 src += pieces->init_data_size;
680
681 return 0;
682 }
683
684 static int iwlagn_load_firmware(struct iwl_priv *priv,
685 const struct firmware *ucode_raw,
686 struct iwlagn_firmware_pieces *pieces,
687 struct iwlagn_ucode_capabilities *capa)
688 {
689 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
690 struct iwl_ucode_tlv *tlv;
691 size_t len = ucode_raw->size;
692 const u8 *data;
693 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
694 int tmp;
695 u64 alternatives;
696 u32 tlv_len;
697 enum iwl_ucode_tlv_type tlv_type;
698 const u8 *tlv_data;
699
700 if (len < sizeof(*ucode)) {
701 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
702 return -EINVAL;
703 }
704
705 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
706 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
707 le32_to_cpu(ucode->magic));
708 return -EINVAL;
709 }
710
711 /*
712 * Check which alternatives are present, and "downgrade"
713 * when the chosen alternative is not present, warning
714 * the user when that happens. Some files may not have
715 * any alternatives, so don't warn in that case.
716 */
717 alternatives = le64_to_cpu(ucode->alternatives);
718 tmp = wanted_alternative;
719 if (wanted_alternative > 63)
720 wanted_alternative = 63;
721 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
722 wanted_alternative--;
723 if (wanted_alternative && wanted_alternative != tmp)
724 IWL_WARN(priv,
725 "uCode alternative %d not available, choosing %d\n",
726 tmp, wanted_alternative);
727
728 priv->ucode_ver = le32_to_cpu(ucode->ver);
729 pieces->build = le32_to_cpu(ucode->build);
730 data = ucode->data;
731
732 len -= sizeof(*ucode);
733
734 while (len >= sizeof(*tlv)) {
735 u16 tlv_alt;
736
737 len -= sizeof(*tlv);
738 tlv = (void *)data;
739
740 tlv_len = le32_to_cpu(tlv->length);
741 tlv_type = le16_to_cpu(tlv->type);
742 tlv_alt = le16_to_cpu(tlv->alternative);
743 tlv_data = tlv->data;
744
745 if (len < tlv_len) {
746 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
747 len, tlv_len);
748 return -EINVAL;
749 }
750 len -= ALIGN(tlv_len, 4);
751 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
752
753 /*
754 * Alternative 0 is always valid.
755 *
756 * Skip alternative TLVs that are not selected.
757 */
758 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
759 continue;
760
761 switch (tlv_type) {
762 case IWL_UCODE_TLV_INST:
763 pieces->inst = tlv_data;
764 pieces->inst_size = tlv_len;
765 break;
766 case IWL_UCODE_TLV_DATA:
767 pieces->data = tlv_data;
768 pieces->data_size = tlv_len;
769 break;
770 case IWL_UCODE_TLV_INIT:
771 pieces->init = tlv_data;
772 pieces->init_size = tlv_len;
773 break;
774 case IWL_UCODE_TLV_INIT_DATA:
775 pieces->init_data = tlv_data;
776 pieces->init_data_size = tlv_len;
777 break;
778 case IWL_UCODE_TLV_BOOT:
779 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
780 break;
781 case IWL_UCODE_TLV_PROBE_MAX_LEN:
782 if (tlv_len != sizeof(u32))
783 goto invalid_tlv_len;
784 capa->max_probe_length =
785 le32_to_cpup((__le32 *)tlv_data);
786 break;
787 case IWL_UCODE_TLV_PAN:
788 if (tlv_len)
789 goto invalid_tlv_len;
790 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
791 break;
792 case IWL_UCODE_TLV_FLAGS:
793 /* must be at least one u32 */
794 if (tlv_len < sizeof(u32))
795 goto invalid_tlv_len;
796 /* and a proper number of u32s */
797 if (tlv_len % sizeof(u32))
798 goto invalid_tlv_len;
799 /*
800 * This driver only reads the first u32 as
801 * right now no more features are defined,
802 * if that changes then either the driver
803 * will not work with the new firmware, or
804 * it'll not take advantage of new features.
805 */
806 capa->flags = le32_to_cpup((__le32 *)tlv_data);
807 break;
808 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
809 if (tlv_len != sizeof(u32))
810 goto invalid_tlv_len;
811 pieces->init_evtlog_ptr =
812 le32_to_cpup((__le32 *)tlv_data);
813 break;
814 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
815 if (tlv_len != sizeof(u32))
816 goto invalid_tlv_len;
817 pieces->init_evtlog_size =
818 le32_to_cpup((__le32 *)tlv_data);
819 break;
820 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
821 if (tlv_len != sizeof(u32))
822 goto invalid_tlv_len;
823 pieces->init_errlog_ptr =
824 le32_to_cpup((__le32 *)tlv_data);
825 break;
826 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
827 if (tlv_len != sizeof(u32))
828 goto invalid_tlv_len;
829 pieces->inst_evtlog_ptr =
830 le32_to_cpup((__le32 *)tlv_data);
831 break;
832 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
833 if (tlv_len != sizeof(u32))
834 goto invalid_tlv_len;
835 pieces->inst_evtlog_size =
836 le32_to_cpup((__le32 *)tlv_data);
837 break;
838 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
839 if (tlv_len != sizeof(u32))
840 goto invalid_tlv_len;
841 pieces->inst_errlog_ptr =
842 le32_to_cpup((__le32 *)tlv_data);
843 break;
844 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
845 if (tlv_len)
846 goto invalid_tlv_len;
847 priv->enhance_sensitivity_table = true;
848 break;
849 case IWL_UCODE_TLV_WOWLAN_INST:
850 pieces->wowlan_inst = tlv_data;
851 pieces->wowlan_inst_size = tlv_len;
852 break;
853 case IWL_UCODE_TLV_WOWLAN_DATA:
854 pieces->wowlan_data = tlv_data;
855 pieces->wowlan_data_size = tlv_len;
856 break;
857 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
858 if (tlv_len != sizeof(u32))
859 goto invalid_tlv_len;
860 capa->standard_phy_calibration_size =
861 le32_to_cpup((__le32 *)tlv_data);
862 break;
863 default:
864 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
865 break;
866 }
867 }
868
869 if (len) {
870 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
871 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
872 return -EINVAL;
873 }
874
875 return 0;
876
877 invalid_tlv_len:
878 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
879 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
880
881 return -EINVAL;
882 }
883
884 /**
885 * iwl_ucode_callback - callback when firmware was loaded
886 *
887 * If loaded successfully, copies the firmware into buffers
888 * for the card to fetch (via DMA).
889 */
890 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
891 {
892 struct iwl_priv *priv = context;
893 struct iwl_ucode_header *ucode;
894 int err;
895 struct iwlagn_firmware_pieces pieces;
896 const unsigned int api_max = priv->cfg->ucode_api_max;
897 unsigned int api_ok = priv->cfg->ucode_api_ok;
898 const unsigned int api_min = priv->cfg->ucode_api_min;
899 u32 api_ver;
900 char buildstr[25];
901 u32 build;
902 struct iwlagn_ucode_capabilities ucode_capa = {
903 .max_probe_length = 200,
904 .standard_phy_calibration_size =
905 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
906 };
907
908 if (!api_ok)
909 api_ok = api_max;
910
911 memset(&pieces, 0, sizeof(pieces));
912
913 if (!ucode_raw) {
914 if (priv->fw_index <= api_ok)
915 IWL_ERR(priv,
916 "request for firmware file '%s' failed.\n",
917 priv->firmware_name);
918 goto try_again;
919 }
920
921 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
922 priv->firmware_name, ucode_raw->size);
923
924 /* Make sure that we got at least the API version number */
925 if (ucode_raw->size < 4) {
926 IWL_ERR(priv, "File size way too small!\n");
927 goto try_again;
928 }
929
930 /* Data from ucode file: header followed by uCode images */
931 ucode = (struct iwl_ucode_header *)ucode_raw->data;
932
933 if (ucode->ver)
934 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
935 else
936 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
937 &ucode_capa);
938
939 if (err)
940 goto try_again;
941
942 api_ver = IWL_UCODE_API(priv->ucode_ver);
943 build = pieces.build;
944
945 /*
946 * api_ver should match the api version forming part of the
947 * firmware filename ... but we don't check for that and only rely
948 * on the API version read from firmware header from here on forward
949 */
950 /* no api version check required for experimental uCode */
951 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
952 if (api_ver < api_min || api_ver > api_max) {
953 IWL_ERR(priv,
954 "Driver unable to support your firmware API. "
955 "Driver supports v%u, firmware is v%u.\n",
956 api_max, api_ver);
957 goto try_again;
958 }
959
960 if (api_ver < api_ok) {
961 if (api_ok != api_max)
962 IWL_ERR(priv, "Firmware has old API version, "
963 "expected v%u through v%u, got v%u.\n",
964 api_ok, api_max, api_ver);
965 else
966 IWL_ERR(priv, "Firmware has old API version, "
967 "expected v%u, got v%u.\n",
968 api_max, api_ver);
969 IWL_ERR(priv, "New firmware can be obtained from "
970 "http://www.intellinuxwireless.org/.\n");
971 }
972 }
973
974 if (build)
975 sprintf(buildstr, " build %u%s", build,
976 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
977 ? " (EXP)" : "");
978 else
979 buildstr[0] = '\0';
980
981 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
982 IWL_UCODE_MAJOR(priv->ucode_ver),
983 IWL_UCODE_MINOR(priv->ucode_ver),
984 IWL_UCODE_API(priv->ucode_ver),
985 IWL_UCODE_SERIAL(priv->ucode_ver),
986 buildstr);
987
988 snprintf(priv->hw->wiphy->fw_version,
989 sizeof(priv->hw->wiphy->fw_version),
990 "%u.%u.%u.%u%s",
991 IWL_UCODE_MAJOR(priv->ucode_ver),
992 IWL_UCODE_MINOR(priv->ucode_ver),
993 IWL_UCODE_API(priv->ucode_ver),
994 IWL_UCODE_SERIAL(priv->ucode_ver),
995 buildstr);
996
997 /*
998 * For any of the failures below (before allocating pci memory)
999 * we will try to load a version with a smaller API -- maybe the
1000 * user just got a corrupted version of the latest API.
1001 */
1002
1003 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1004 priv->ucode_ver);
1005 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1006 pieces.inst_size);
1007 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1008 pieces.data_size);
1009 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1010 pieces.init_size);
1011 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1012 pieces.init_data_size);
1013
1014 /* Verify that uCode images will fit in card's SRAM */
1015 if (pieces.inst_size > hw_params(priv).max_inst_size) {
1016 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1017 pieces.inst_size);
1018 goto try_again;
1019 }
1020
1021 if (pieces.data_size > hw_params(priv).max_data_size) {
1022 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1023 pieces.data_size);
1024 goto try_again;
1025 }
1026
1027 if (pieces.init_size > hw_params(priv).max_inst_size) {
1028 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1029 pieces.init_size);
1030 goto try_again;
1031 }
1032
1033 if (pieces.init_data_size > hw_params(priv).max_data_size) {
1034 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1035 pieces.init_data_size);
1036 goto try_again;
1037 }
1038
1039 /* Allocate ucode buffers for card's bus-master loading ... */
1040
1041 /* Runtime instructions and 2 copies of data:
1042 * 1) unmodified from disk
1043 * 2) backup cache for save/restore during power-downs */
1044 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1045 pieces.inst, pieces.inst_size))
1046 goto err_pci_alloc;
1047 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1048 pieces.data, pieces.data_size))
1049 goto err_pci_alloc;
1050
1051 /* Initialization instructions and data */
1052 if (pieces.init_size && pieces.init_data_size) {
1053 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1054 pieces.init, pieces.init_size))
1055 goto err_pci_alloc;
1056 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1057 pieces.init_data, pieces.init_data_size))
1058 goto err_pci_alloc;
1059 }
1060
1061 /* WoWLAN instructions and data */
1062 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1063 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1064 pieces.wowlan_inst,
1065 pieces.wowlan_inst_size))
1066 goto err_pci_alloc;
1067 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1068 pieces.wowlan_data,
1069 pieces.wowlan_data_size))
1070 goto err_pci_alloc;
1071 }
1072
1073 /* Now that we can no longer fail, copy information */
1074
1075 /*
1076 * The (size - 16) / 12 formula is based on the information recorded
1077 * for each event, which is of mode 1 (including timestamp) for all
1078 * new microcodes that include this information.
1079 */
1080 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1081 if (pieces.init_evtlog_size)
1082 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1083 else
1084 priv->init_evtlog_size =
1085 priv->cfg->base_params->max_event_log_size;
1086 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1087 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1088 if (pieces.inst_evtlog_size)
1089 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1090 else
1091 priv->inst_evtlog_size =
1092 priv->cfg->base_params->max_event_log_size;
1093 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1094
1095 priv->new_scan_threshold_behaviour =
1096 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1097
1098 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1099 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1100
1101 /*
1102 * if not PAN, then don't support P2P -- might be a uCode
1103 * packaging bug or due to the eeprom check above
1104 */
1105 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1106 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1107
1108 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1109 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1110 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1111 } else {
1112 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1113 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1114 }
1115
1116 /*
1117 * figure out the offset of chain noise reset and gain commands
1118 * base on the size of standard phy calibration commands table size
1119 */
1120 if (ucode_capa.standard_phy_calibration_size >
1121 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1122 ucode_capa.standard_phy_calibration_size =
1123 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1124
1125 priv->phy_calib_chain_noise_reset_cmd =
1126 ucode_capa.standard_phy_calibration_size;
1127 priv->phy_calib_chain_noise_gain_cmd =
1128 ucode_capa.standard_phy_calibration_size + 1;
1129
1130 /* initialize all valid contexts */
1131 iwl_init_context(priv, ucode_capa.flags);
1132
1133 /**************************************************
1134 * This is still part of probe() in a sense...
1135 *
1136 * 9. Setup and register with mac80211 and debugfs
1137 **************************************************/
1138 err = iwl_mac_setup_register(priv, &ucode_capa);
1139 if (err)
1140 goto out_unbind;
1141
1142 err = iwl_dbgfs_register(priv, DRV_NAME);
1143 if (err)
1144 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1145
1146 /* We have our copies now, allow OS release its copies */
1147 release_firmware(ucode_raw);
1148 complete(&priv->firmware_loading_complete);
1149 return;
1150
1151 try_again:
1152 /* try next, if any */
1153 if (iwl_request_firmware(priv, false))
1154 goto out_unbind;
1155 release_firmware(ucode_raw);
1156 return;
1157
1158 err_pci_alloc:
1159 IWL_ERR(priv, "failed to allocate pci memory\n");
1160 iwl_dealloc_ucode(priv);
1161 out_unbind:
1162 complete(&priv->firmware_loading_complete);
1163 device_release_driver(priv->bus->dev);
1164 release_firmware(ucode_raw);
1165 }
1166
1167 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1168 {
1169 struct iwl_ct_kill_config cmd;
1170 struct iwl_ct_kill_throttling_config adv_cmd;
1171 unsigned long flags;
1172 int ret = 0;
1173
1174 spin_lock_irqsave(&priv->shrd->lock, flags);
1175 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1176 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1177 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1178 priv->thermal_throttle.ct_kill_toggle = false;
1179
1180 if (priv->cfg->base_params->support_ct_kill_exit) {
1181 adv_cmd.critical_temperature_enter =
1182 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1183 adv_cmd.critical_temperature_exit =
1184 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1185
1186 ret = iwl_trans_send_cmd_pdu(trans(priv),
1187 REPLY_CT_KILL_CONFIG_CMD,
1188 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1189 if (ret)
1190 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1191 else
1192 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1193 "succeeded, critical temperature enter is %d,"
1194 "exit is %d\n",
1195 hw_params(priv).ct_kill_threshold,
1196 hw_params(priv).ct_kill_exit_threshold);
1197 } else {
1198 cmd.critical_temperature_R =
1199 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1200
1201 ret = iwl_trans_send_cmd_pdu(trans(priv),
1202 REPLY_CT_KILL_CONFIG_CMD,
1203 CMD_SYNC, sizeof(cmd), &cmd);
1204 if (ret)
1205 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1206 else
1207 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1208 "succeeded, "
1209 "critical temperature is %d\n",
1210 hw_params(priv).ct_kill_threshold);
1211 }
1212 }
1213
1214 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1215 {
1216 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1217 struct iwl_host_cmd cmd = {
1218 .id = CALIBRATION_CFG_CMD,
1219 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1220 .data = { &calib_cfg_cmd, },
1221 };
1222
1223 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1224 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1225 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1226
1227 return iwl_trans_send_cmd(trans(priv), &cmd);
1228 }
1229
1230
1231 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1232 {
1233 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1234 .valid = cpu_to_le32(valid_tx_ant),
1235 };
1236
1237 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1238 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1239 return iwl_trans_send_cmd_pdu(trans(priv),
1240 TX_ANT_CONFIGURATION_CMD,
1241 CMD_SYNC,
1242 sizeof(struct iwl_tx_ant_config_cmd),
1243 &tx_ant_cmd);
1244 } else {
1245 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1246 return -EOPNOTSUPP;
1247 }
1248 }
1249
1250 /**
1251 * iwl_alive_start - called after REPLY_ALIVE notification received
1252 * from protocol/runtime uCode (initialization uCode's
1253 * Alive gets handled by iwl_init_alive_start()).
1254 */
1255 int iwl_alive_start(struct iwl_priv *priv)
1256 {
1257 int ret = 0;
1258 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1259
1260 /*TODO: this should go to the transport layer */
1261 iwl_reset_ict(trans(priv));
1262
1263 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1264
1265 /* After the ALIVE response, we can send host commands to the uCode */
1266 set_bit(STATUS_ALIVE, &priv->shrd->status);
1267
1268 /* Enable watchdog to monitor the driver tx queues */
1269 iwl_setup_watchdog(priv);
1270
1271 if (iwl_is_rfkill(priv->shrd))
1272 return -ERFKILL;
1273
1274 /* download priority table before any calibration request */
1275 if (priv->cfg->bt_params &&
1276 priv->cfg->bt_params->advanced_bt_coexist) {
1277 /* Configure Bluetooth device coexistence support */
1278 if (priv->cfg->bt_params->bt_sco_disable)
1279 priv->bt_enable_pspoll = false;
1280 else
1281 priv->bt_enable_pspoll = true;
1282
1283 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1284 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1285 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1286 iwlagn_send_advance_bt_config(priv);
1287 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1288 priv->cur_rssi_ctx = NULL;
1289
1290 iwlagn_send_prio_tbl(priv);
1291
1292 /* FIXME: w/a to force change uCode BT state machine */
1293 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1294 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1295 if (ret)
1296 return ret;
1297 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1298 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1299 if (ret)
1300 return ret;
1301 } else {
1302 /*
1303 * default is 2-wire BT coexexistence support
1304 */
1305 iwl_send_bt_config(priv);
1306 }
1307
1308 if (hw_params(priv).calib_rt_cfg)
1309 iwlagn_send_calib_cfg_rt(priv,
1310 hw_params(priv).calib_rt_cfg);
1311
1312 ieee80211_wake_queues(priv->hw);
1313
1314 priv->active_rate = IWL_RATES_MASK;
1315
1316 /* Configure Tx antenna selection based on H/W config */
1317 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1318
1319 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1320 struct iwl_rxon_cmd *active_rxon =
1321 (struct iwl_rxon_cmd *)&ctx->active;
1322 /* apply any changes in staging */
1323 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1324 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1325 } else {
1326 struct iwl_rxon_context *tmp;
1327 /* Initialize our rx_config data */
1328 for_each_context(priv, tmp)
1329 iwl_connection_init_rx_config(priv, tmp);
1330
1331 iwlagn_set_rxon_chain(priv, ctx);
1332 }
1333
1334 if (!priv->shrd->wowlan) {
1335 /* WoWLAN ucode will not reply in the same way, skip it */
1336 iwl_reset_run_time_calib(priv);
1337 }
1338
1339 set_bit(STATUS_READY, &priv->shrd->status);
1340
1341 /* Configure the adapter for unassociated operation */
1342 ret = iwlagn_commit_rxon(priv, ctx);
1343 if (ret)
1344 return ret;
1345
1346 /* At this point, the NIC is initialized and operational */
1347 iwl_rf_kill_ct_config(priv);
1348
1349 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1350
1351 return iwl_power_update_mode(priv, true);
1352 }
1353
1354 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1355
1356 static void __iwl_down(struct iwl_priv *priv)
1357 {
1358 int exit_pending;
1359
1360 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1361
1362 iwl_scan_cancel_timeout(priv, 200);
1363
1364 /*
1365 * If active, scanning won't cancel it, so say it expired.
1366 * No race since we hold the mutex here and a new one
1367 * can't come in at this time.
1368 */
1369 ieee80211_remain_on_channel_expired(priv->hw);
1370
1371 exit_pending =
1372 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1373
1374 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1375 * to prevent rearm timer */
1376 del_timer_sync(&priv->watchdog);
1377
1378 iwl_clear_ucode_stations(priv, NULL);
1379 iwl_dealloc_bcast_stations(priv);
1380 iwl_clear_driver_stations(priv);
1381
1382 /* reset BT coex data */
1383 priv->bt_status = 0;
1384 priv->cur_rssi_ctx = NULL;
1385 priv->bt_is_sco = 0;
1386 if (priv->cfg->bt_params)
1387 priv->bt_traffic_load =
1388 priv->cfg->bt_params->bt_init_traffic_load;
1389 else
1390 priv->bt_traffic_load = 0;
1391 priv->bt_full_concurrent = false;
1392 priv->bt_ci_compliance = 0;
1393
1394 /* Wipe out the EXIT_PENDING status bit if we are not actually
1395 * exiting the module */
1396 if (!exit_pending)
1397 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1398
1399 if (priv->mac80211_registered)
1400 ieee80211_stop_queues(priv->hw);
1401
1402 iwl_trans_stop_device(trans(priv));
1403
1404 /* Clear out all status bits but a few that are stable across reset */
1405 priv->shrd->status &=
1406 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1407 STATUS_RF_KILL_HW |
1408 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1409 STATUS_GEO_CONFIGURED |
1410 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1411 STATUS_FW_ERROR |
1412 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1413 STATUS_EXIT_PENDING;
1414
1415 dev_kfree_skb(priv->beacon_skb);
1416 priv->beacon_skb = NULL;
1417 }
1418
1419 static void iwl_down(struct iwl_priv *priv)
1420 {
1421 mutex_lock(&priv->shrd->mutex);
1422 __iwl_down(priv);
1423 mutex_unlock(&priv->shrd->mutex);
1424
1425 iwl_cancel_deferred_work(priv);
1426 }
1427
1428 #define MAX_HW_RESTARTS 5
1429
1430 static int __iwl_up(struct iwl_priv *priv)
1431 {
1432 struct iwl_rxon_context *ctx;
1433 int ret;
1434
1435 lockdep_assert_held(&priv->shrd->mutex);
1436
1437 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1438 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1439 return -EIO;
1440 }
1441
1442 for_each_context(priv, ctx) {
1443 ret = iwlagn_alloc_bcast_station(priv, ctx);
1444 if (ret) {
1445 iwl_dealloc_bcast_stations(priv);
1446 return ret;
1447 }
1448 }
1449
1450 ret = iwlagn_run_init_ucode(priv);
1451 if (ret) {
1452 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1453 goto error;
1454 }
1455
1456 ret = iwlagn_load_ucode_wait_alive(priv,
1457 &priv->ucode_rt,
1458 IWL_UCODE_REGULAR);
1459 if (ret) {
1460 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1461 goto error;
1462 }
1463
1464 ret = iwl_alive_start(priv);
1465 if (ret)
1466 goto error;
1467 return 0;
1468
1469 error:
1470 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1471 __iwl_down(priv);
1472 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1473
1474 IWL_ERR(priv, "Unable to initialize device.\n");
1475 return ret;
1476 }
1477
1478
1479 /*****************************************************************************
1480 *
1481 * Workqueue callbacks
1482 *
1483 *****************************************************************************/
1484
1485 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1486 {
1487 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1488 run_time_calib_work);
1489
1490 mutex_lock(&priv->shrd->mutex);
1491
1492 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1493 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1494 mutex_unlock(&priv->shrd->mutex);
1495 return;
1496 }
1497
1498 if (priv->start_calib) {
1499 iwl_chain_noise_calibration(priv);
1500 iwl_sensitivity_calibration(priv);
1501 }
1502
1503 mutex_unlock(&priv->shrd->mutex);
1504 }
1505
1506 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1507 {
1508 struct iwl_rxon_context *ctx;
1509 bool bt_full_concurrent;
1510 u8 bt_ci_compliance;
1511 u8 bt_load;
1512 u8 bt_status;
1513 bool bt_is_sco;
1514
1515 lockdep_assert_held(&priv->shrd->mutex);
1516
1517 for_each_context(priv, ctx)
1518 ctx->vif = NULL;
1519 priv->is_open = 0;
1520
1521 /*
1522 * __iwl_down() will clear the BT status variables,
1523 * which is correct, but when we restart we really
1524 * want to keep them so restore them afterwards.
1525 *
1526 * The restart process will later pick them up and
1527 * re-configure the hw when we reconfigure the BT
1528 * command.
1529 */
1530 bt_full_concurrent = priv->bt_full_concurrent;
1531 bt_ci_compliance = priv->bt_ci_compliance;
1532 bt_load = priv->bt_traffic_load;
1533 bt_status = priv->bt_status;
1534 bt_is_sco = priv->bt_is_sco;
1535
1536 __iwl_down(priv);
1537
1538 priv->bt_full_concurrent = bt_full_concurrent;
1539 priv->bt_ci_compliance = bt_ci_compliance;
1540 priv->bt_traffic_load = bt_load;
1541 priv->bt_status = bt_status;
1542 priv->bt_is_sco = bt_is_sco;
1543 }
1544
1545 static void iwl_bg_restart(struct work_struct *data)
1546 {
1547 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1548
1549 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1550 return;
1551
1552 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1553 mutex_lock(&priv->shrd->mutex);
1554 iwlagn_prepare_restart(priv);
1555 mutex_unlock(&priv->shrd->mutex);
1556 iwl_cancel_deferred_work(priv);
1557 ieee80211_restart_hw(priv->hw);
1558 } else {
1559 WARN_ON(1);
1560 }
1561 }
1562
1563 /*****************************************************************************
1564 *
1565 * mac80211 entry point functions
1566 *
1567 *****************************************************************************/
1568
1569 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1570 {
1571 .max = 1,
1572 .types = BIT(NL80211_IFTYPE_STATION),
1573 },
1574 {
1575 .max = 1,
1576 .types = BIT(NL80211_IFTYPE_AP),
1577 },
1578 };
1579
1580 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1581 {
1582 .max = 2,
1583 .types = BIT(NL80211_IFTYPE_STATION),
1584 },
1585 };
1586
1587 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1588 {
1589 .max = 1,
1590 .types = BIT(NL80211_IFTYPE_STATION),
1591 },
1592 {
1593 .max = 1,
1594 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1595 BIT(NL80211_IFTYPE_AP),
1596 },
1597 };
1598
1599 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1600 {
1601 .max = 2,
1602 .types = BIT(NL80211_IFTYPE_STATION),
1603 },
1604 {
1605 .max = 1,
1606 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1607 },
1608 };
1609
1610 static const struct ieee80211_iface_combination
1611 iwlagn_iface_combinations_dualmode[] = {
1612 { .num_different_channels = 1,
1613 .max_interfaces = 2,
1614 .beacon_int_infra_match = true,
1615 .limits = iwlagn_sta_ap_limits,
1616 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1617 },
1618 { .num_different_channels = 1,
1619 .max_interfaces = 2,
1620 .limits = iwlagn_2sta_limits,
1621 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1622 },
1623 };
1624
1625 static const struct ieee80211_iface_combination
1626 iwlagn_iface_combinations_p2p[] = {
1627 { .num_different_channels = 1,
1628 .max_interfaces = 2,
1629 .beacon_int_infra_match = true,
1630 .limits = iwlagn_p2p_sta_go_limits,
1631 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1632 },
1633 { .num_different_channels = 1,
1634 .max_interfaces = 2,
1635 .limits = iwlagn_p2p_2sta_limits,
1636 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1637 },
1638 };
1639
1640 /*
1641 * Not a mac80211 entry point function, but it fits in with all the
1642 * other mac80211 functions grouped here.
1643 */
1644 static int iwl_mac_setup_register(struct iwl_priv *priv,
1645 struct iwlagn_ucode_capabilities *capa)
1646 {
1647 int ret;
1648 struct ieee80211_hw *hw = priv->hw;
1649 struct iwl_rxon_context *ctx;
1650
1651 hw->rate_control_algorithm = "iwl-agn-rs";
1652
1653 /* Tell mac80211 our characteristics */
1654 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1655 IEEE80211_HW_AMPDU_AGGREGATION |
1656 IEEE80211_HW_NEED_DTIM_PERIOD |
1657 IEEE80211_HW_SPECTRUM_MGMT |
1658 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1659
1660 /*
1661 * Including the following line will crash some AP's. This
1662 * workaround removes the stimulus which causes the crash until
1663 * the AP software can be fixed.
1664 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1665 */
1666
1667 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1668 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1669
1670 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1671 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1672 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1673
1674 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1675 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1676
1677 hw->sta_data_size = sizeof(struct iwl_station_priv);
1678 hw->vif_data_size = sizeof(struct iwl_vif_priv);
1679
1680 for_each_context(priv, ctx) {
1681 hw->wiphy->interface_modes |= ctx->interface_modes;
1682 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1683 }
1684
1685 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1686
1687 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1688 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1689 hw->wiphy->n_iface_combinations =
1690 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1691 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1692 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1693 hw->wiphy->n_iface_combinations =
1694 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1695 }
1696
1697 hw->wiphy->max_remain_on_channel_duration = 1000;
1698
1699 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1700 WIPHY_FLAG_DISABLE_BEACON_HINTS |
1701 WIPHY_FLAG_IBSS_RSN;
1702
1703 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
1704 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1705 WIPHY_WOWLAN_DISCONNECT |
1706 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1707 WIPHY_WOWLAN_RFKILL_RELEASE;
1708 if (!iwlagn_mod_params.sw_crypto)
1709 hw->wiphy->wowlan.flags |=
1710 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1711 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1712
1713 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1714 hw->wiphy->wowlan.pattern_min_len =
1715 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1716 hw->wiphy->wowlan.pattern_max_len =
1717 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1718 }
1719
1720 if (iwlagn_mod_params.power_save)
1721 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1722 else
1723 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1724
1725 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1726 /* we create the 802.11 header and a zero-length SSID element */
1727 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1728
1729 /* Default value; 4 EDCA QOS priorities */
1730 hw->queues = 4;
1731
1732 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1733
1734 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1735 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1736 &priv->bands[IEEE80211_BAND_2GHZ];
1737 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1738 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1739 &priv->bands[IEEE80211_BAND_5GHZ];
1740
1741 iwl_leds_init(priv);
1742
1743 ret = ieee80211_register_hw(priv->hw);
1744 if (ret) {
1745 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1746 return ret;
1747 }
1748 priv->mac80211_registered = 1;
1749
1750 return 0;
1751 }
1752
1753
1754 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1755 {
1756 struct iwl_priv *priv = hw->priv;
1757 int ret;
1758
1759 IWL_DEBUG_MAC80211(priv, "enter\n");
1760
1761 /* we should be verifying the device is ready to be opened */
1762 mutex_lock(&priv->shrd->mutex);
1763 ret = __iwl_up(priv);
1764 mutex_unlock(&priv->shrd->mutex);
1765 if (ret)
1766 return ret;
1767
1768 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1769
1770 /* Now we should be done, and the READY bit should be set. */
1771 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1772 ret = -EIO;
1773
1774 iwlagn_led_enable(priv);
1775
1776 priv->is_open = 1;
1777 IWL_DEBUG_MAC80211(priv, "leave\n");
1778 return 0;
1779 }
1780
1781 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1782 {
1783 struct iwl_priv *priv = hw->priv;
1784
1785 IWL_DEBUG_MAC80211(priv, "enter\n");
1786
1787 if (!priv->is_open)
1788 return;
1789
1790 priv->is_open = 0;
1791
1792 iwl_down(priv);
1793
1794 flush_workqueue(priv->shrd->workqueue);
1795
1796 /* User space software may expect getting rfkill changes
1797 * even if interface is down */
1798 iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1799 iwl_enable_rfkill_int(priv);
1800
1801 IWL_DEBUG_MAC80211(priv, "leave\n");
1802 }
1803
1804 #ifdef CONFIG_PM_SLEEP
1805 static int iwlagn_send_patterns(struct iwl_priv *priv,
1806 struct cfg80211_wowlan *wowlan)
1807 {
1808 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1809 struct iwl_host_cmd cmd = {
1810 .id = REPLY_WOWLAN_PATTERNS,
1811 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1812 .flags = CMD_SYNC,
1813 };
1814 int i, err;
1815
1816 if (!wowlan->n_patterns)
1817 return 0;
1818
1819 cmd.len[0] = sizeof(*pattern_cmd) +
1820 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1821
1822 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1823 if (!pattern_cmd)
1824 return -ENOMEM;
1825
1826 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1827
1828 for (i = 0; i < wowlan->n_patterns; i++) {
1829 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1830
1831 memcpy(&pattern_cmd->patterns[i].mask,
1832 wowlan->patterns[i].mask, mask_len);
1833 memcpy(&pattern_cmd->patterns[i].pattern,
1834 wowlan->patterns[i].pattern,
1835 wowlan->patterns[i].pattern_len);
1836 pattern_cmd->patterns[i].mask_size = mask_len;
1837 pattern_cmd->patterns[i].pattern_size =
1838 wowlan->patterns[i].pattern_len;
1839 }
1840
1841 cmd.data[0] = pattern_cmd;
1842 err = iwl_trans_send_cmd(trans(priv), &cmd);
1843 kfree(pattern_cmd);
1844 return err;
1845 }
1846 #endif
1847
1848 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1849 struct ieee80211_vif *vif,
1850 struct cfg80211_gtk_rekey_data *data)
1851 {
1852 struct iwl_priv *priv = hw->priv;
1853
1854 if (iwlagn_mod_params.sw_crypto)
1855 return;
1856
1857 mutex_lock(&priv->shrd->mutex);
1858
1859 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1860 goto out;
1861
1862 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
1863 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
1864 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
1865 priv->have_rekey_data = true;
1866
1867 out:
1868 mutex_unlock(&priv->shrd->mutex);
1869 }
1870
1871 struct wowlan_key_data {
1872 struct iwl_rxon_context *ctx;
1873 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
1874 struct iwlagn_wowlan_tkip_params_cmd *tkip;
1875 const u8 *bssid;
1876 bool error, use_rsc_tsc, use_tkip;
1877 };
1878
1879 #ifdef CONFIG_PM_SLEEP
1880 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
1881 {
1882 int i;
1883
1884 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
1885 out[i] = cpu_to_le16(p1k[i]);
1886 }
1887
1888 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
1889 struct ieee80211_vif *vif,
1890 struct ieee80211_sta *sta,
1891 struct ieee80211_key_conf *key,
1892 void *_data)
1893 {
1894 struct iwl_priv *priv = hw->priv;
1895 struct wowlan_key_data *data = _data;
1896 struct iwl_rxon_context *ctx = data->ctx;
1897 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
1898 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
1899 struct iwlagn_p1k_cache *rx_p1ks;
1900 u8 *rx_mic_key;
1901 struct ieee80211_key_seq seq;
1902 u32 cur_rx_iv32 = 0;
1903 u16 p1k[IWLAGN_P1K_SIZE];
1904 int ret, i;
1905
1906 mutex_lock(&priv->shrd->mutex);
1907
1908 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1909 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
1910 !sta && !ctx->key_mapping_keys)
1911 ret = iwl_set_default_wep_key(priv, ctx, key);
1912 else
1913 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
1914
1915 if (ret) {
1916 IWL_ERR(priv, "Error setting key during suspend!\n");
1917 data->error = true;
1918 }
1919
1920 switch (key->cipher) {
1921 case WLAN_CIPHER_SUITE_TKIP:
1922 if (sta) {
1923 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
1924 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
1925
1926 rx_p1ks = data->tkip->rx_uni;
1927
1928 ieee80211_get_key_tx_seq(key, &seq);
1929 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
1930 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
1931
1932 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1933 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1934
1935 memcpy(data->tkip->mic_keys.tx,
1936 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1937 IWLAGN_MIC_KEY_SIZE);
1938
1939 rx_mic_key = data->tkip->mic_keys.rx_unicast;
1940 } else {
1941 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1942 rx_p1ks = data->tkip->rx_multi;
1943 rx_mic_key = data->tkip->mic_keys.rx_mcast;
1944 }
1945
1946 /*
1947 * For non-QoS this relies on the fact that both the uCode and
1948 * mac80211 use TID 0 (as they need to to avoid replay attacks)
1949 * for checking the IV in the frames.
1950 */
1951 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1952 ieee80211_get_key_rx_seq(key, i, &seq);
1953 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1954 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1955 /* wrapping isn't allowed, AP must rekey */
1956 if (seq.tkip.iv32 > cur_rx_iv32)
1957 cur_rx_iv32 = seq.tkip.iv32;
1958 }
1959
1960 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1961 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1962 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1963 cur_rx_iv32 + 1, p1k);
1964 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1965
1966 memcpy(rx_mic_key,
1967 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1968 IWLAGN_MIC_KEY_SIZE);
1969
1970 data->use_tkip = true;
1971 data->use_rsc_tsc = true;
1972 break;
1973 case WLAN_CIPHER_SUITE_CCMP:
1974 if (sta) {
1975 u8 *pn = seq.ccmp.pn;
1976
1977 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1978 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1979
1980 ieee80211_get_key_tx_seq(key, &seq);
1981 aes_tx_sc->pn = cpu_to_le64(
1982 (u64)pn[5] |
1983 ((u64)pn[4] << 8) |
1984 ((u64)pn[3] << 16) |
1985 ((u64)pn[2] << 24) |
1986 ((u64)pn[1] << 32) |
1987 ((u64)pn[0] << 40));
1988 } else
1989 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1990
1991 /*
1992 * For non-QoS this relies on the fact that both the uCode and
1993 * mac80211 use TID 0 for checking the IV in the frames.
1994 */
1995 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1996 u8 *pn = seq.ccmp.pn;
1997
1998 ieee80211_get_key_rx_seq(key, i, &seq);
1999 aes_sc->pn = cpu_to_le64(
2000 (u64)pn[5] |
2001 ((u64)pn[4] << 8) |
2002 ((u64)pn[3] << 16) |
2003 ((u64)pn[2] << 24) |
2004 ((u64)pn[1] << 32) |
2005 ((u64)pn[0] << 40));
2006 }
2007 data->use_rsc_tsc = true;
2008 break;
2009 }
2010
2011 mutex_unlock(&priv->shrd->mutex);
2012 }
2013
2014 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2015 struct cfg80211_wowlan *wowlan)
2016 {
2017 struct iwl_priv *priv = hw->priv;
2018 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2019 struct iwl_rxon_cmd rxon;
2020 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2021 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2022 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2023 struct wowlan_key_data key_data = {
2024 .ctx = ctx,
2025 .bssid = ctx->active.bssid_addr,
2026 .use_rsc_tsc = false,
2027 .tkip = &tkip_cmd,
2028 .use_tkip = false,
2029 };
2030 int ret, i;
2031 u16 seq;
2032
2033 if (WARN_ON(!wowlan))
2034 return -EINVAL;
2035
2036 mutex_lock(&priv->shrd->mutex);
2037
2038 /* Don't attempt WoWLAN when not associated, tear down instead. */
2039 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2040 !iwl_is_associated_ctx(ctx)) {
2041 ret = 1;
2042 goto out;
2043 }
2044
2045 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2046 if (!key_data.rsc_tsc) {
2047 ret = -ENOMEM;
2048 goto out;
2049 }
2050
2051 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2052
2053 /*
2054 * We know the last used seqno, and the uCode expects to know that
2055 * one, it will increment before TX.
2056 */
2057 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2058 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2059
2060 /*
2061 * For QoS counters, we store the one to use next, so subtract 0x10
2062 * since the uCode will add 0x10 before using the value.
2063 */
2064 for (i = 0; i < 8; i++) {
2065 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2066 seq -= 0x10;
2067 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2068 }
2069
2070 if (wowlan->disconnect)
2071 wakeup_filter_cmd.enabled |=
2072 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2073 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2074 if (wowlan->magic_pkt)
2075 wakeup_filter_cmd.enabled |=
2076 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2077 if (wowlan->gtk_rekey_failure)
2078 wakeup_filter_cmd.enabled |=
2079 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2080 if (wowlan->eap_identity_req)
2081 wakeup_filter_cmd.enabled |=
2082 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2083 if (wowlan->four_way_handshake)
2084 wakeup_filter_cmd.enabled |=
2085 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2086 if (wowlan->rfkill_release)
2087 wakeup_filter_cmd.enabled |=
2088 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2089 if (wowlan->n_patterns)
2090 wakeup_filter_cmd.enabled |=
2091 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2092
2093 iwl_scan_cancel_timeout(priv, 200);
2094
2095 memcpy(&rxon, &ctx->active, sizeof(rxon));
2096
2097 iwl_trans_stop_device(trans(priv));
2098
2099 priv->shrd->wowlan = true;
2100
2101 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2102 IWL_UCODE_WOWLAN);
2103 if (ret)
2104 goto error;
2105
2106 /* now configure WoWLAN ucode */
2107 ret = iwl_alive_start(priv);
2108 if (ret)
2109 goto error;
2110
2111 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2112 ret = iwlagn_commit_rxon(priv, ctx);
2113 if (ret)
2114 goto error;
2115
2116 ret = iwl_power_update_mode(priv, true);
2117 if (ret)
2118 goto error;
2119
2120 if (!iwlagn_mod_params.sw_crypto) {
2121 /* mark all keys clear */
2122 priv->ucode_key_table = 0;
2123 ctx->key_mapping_keys = 0;
2124
2125 /*
2126 * This needs to be unlocked due to lock ordering
2127 * constraints. Since we're in the suspend path
2128 * that isn't really a problem though.
2129 */
2130 mutex_unlock(&priv->shrd->mutex);
2131 ieee80211_iter_keys(priv->hw, ctx->vif,
2132 iwlagn_wowlan_program_keys,
2133 &key_data);
2134 mutex_lock(&priv->shrd->mutex);
2135 if (key_data.error) {
2136 ret = -EIO;
2137 goto error;
2138 }
2139
2140 if (key_data.use_rsc_tsc) {
2141 struct iwl_host_cmd rsc_tsc_cmd = {
2142 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2143 .flags = CMD_SYNC,
2144 .data[0] = key_data.rsc_tsc,
2145 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2146 .len[0] = sizeof(*key_data.rsc_tsc),
2147 };
2148
2149 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2150 if (ret)
2151 goto error;
2152 }
2153
2154 if (key_data.use_tkip) {
2155 ret = iwl_trans_send_cmd_pdu(trans(priv),
2156 REPLY_WOWLAN_TKIP_PARAMS,
2157 CMD_SYNC, sizeof(tkip_cmd),
2158 &tkip_cmd);
2159 if (ret)
2160 goto error;
2161 }
2162
2163 if (priv->have_rekey_data) {
2164 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2165 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2166 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2167 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2168 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2169 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2170
2171 ret = iwl_trans_send_cmd_pdu(trans(priv),
2172 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2173 CMD_SYNC, sizeof(kek_kck_cmd),
2174 &kek_kck_cmd);
2175 if (ret)
2176 goto error;
2177 }
2178 }
2179
2180 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2181 CMD_SYNC, sizeof(wakeup_filter_cmd),
2182 &wakeup_filter_cmd);
2183 if (ret)
2184 goto error;
2185
2186 ret = iwlagn_send_patterns(priv, wowlan);
2187 if (ret)
2188 goto error;
2189
2190 device_set_wakeup_enable(priv->bus->dev, true);
2191
2192 /* Now let the ucode operate on its own */
2193 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2194 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2195
2196 goto out;
2197
2198 error:
2199 priv->shrd->wowlan = false;
2200 iwlagn_prepare_restart(priv);
2201 ieee80211_restart_hw(priv->hw);
2202 out:
2203 mutex_unlock(&priv->shrd->mutex);
2204 kfree(key_data.rsc_tsc);
2205 return ret;
2206 }
2207
2208 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2209 {
2210 struct iwl_priv *priv = hw->priv;
2211 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2212 struct ieee80211_vif *vif;
2213 unsigned long flags;
2214 u32 base, status = 0xffffffff;
2215 int ret = -EIO;
2216
2217 mutex_lock(&priv->shrd->mutex);
2218
2219 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2220 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2221
2222 base = priv->device_pointers.error_event_table;
2223 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2224 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2225 ret = iwl_grab_nic_access_silent(bus(priv));
2226 if (ret == 0) {
2227 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2228 status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2229 iwl_release_nic_access(bus(priv));
2230 }
2231 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2232
2233 #ifdef CONFIG_IWLWIFI_DEBUGFS
2234 if (ret == 0) {
2235 if (!priv->wowlan_sram)
2236 priv->wowlan_sram =
2237 kzalloc(priv->ucode_wowlan.data.len,
2238 GFP_KERNEL);
2239
2240 if (priv->wowlan_sram)
2241 _iwl_read_targ_mem_words(
2242 bus(priv), 0x800000, priv->wowlan_sram,
2243 priv->ucode_wowlan.data.len / 4);
2244 }
2245 #endif
2246 }
2247
2248 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2249 vif = ctx->vif;
2250
2251 priv->shrd->wowlan = false;
2252
2253 device_set_wakeup_enable(priv->bus->dev, false);
2254
2255 iwlagn_prepare_restart(priv);
2256
2257 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2258 iwl_connection_init_rx_config(priv, ctx);
2259 iwlagn_set_rxon_chain(priv, ctx);
2260
2261 mutex_unlock(&priv->shrd->mutex);
2262
2263 ieee80211_resume_disconnect(vif);
2264
2265 return 1;
2266 }
2267 #endif
2268
2269 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2270 {
2271 struct iwl_priv *priv = hw->priv;
2272
2273 IWL_DEBUG_MACDUMP(priv, "enter\n");
2274
2275 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2276 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2277
2278 if (iwlagn_tx_skb(priv, skb))
2279 dev_kfree_skb_any(skb);
2280
2281 IWL_DEBUG_MACDUMP(priv, "leave\n");
2282 }
2283
2284 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2285 struct ieee80211_vif *vif,
2286 struct ieee80211_key_conf *keyconf,
2287 struct ieee80211_sta *sta,
2288 u32 iv32, u16 *phase1key)
2289 {
2290 struct iwl_priv *priv = hw->priv;
2291
2292 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2293 }
2294
2295 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2296 struct ieee80211_vif *vif,
2297 struct ieee80211_sta *sta,
2298 struct ieee80211_key_conf *key)
2299 {
2300 struct iwl_priv *priv = hw->priv;
2301 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2302 struct iwl_rxon_context *ctx = vif_priv->ctx;
2303 int ret;
2304 bool is_default_wep_key = false;
2305
2306 IWL_DEBUG_MAC80211(priv, "enter\n");
2307
2308 if (iwlagn_mod_params.sw_crypto) {
2309 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2310 return -EOPNOTSUPP;
2311 }
2312
2313 /*
2314 * We could program these keys into the hardware as well, but we
2315 * don't expect much multicast traffic in IBSS and having keys
2316 * for more stations is probably more useful.
2317 *
2318 * Mark key TX-only and return 0.
2319 */
2320 if (vif->type == NL80211_IFTYPE_ADHOC &&
2321 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2322 key->hw_key_idx = WEP_INVALID_OFFSET;
2323 return 0;
2324 }
2325
2326 /* If they key was TX-only, accept deletion */
2327 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2328 return 0;
2329
2330 mutex_lock(&priv->shrd->mutex);
2331 iwl_scan_cancel_timeout(priv, 100);
2332
2333 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2334
2335 /*
2336 * If we are getting WEP group key and we didn't receive any key mapping
2337 * so far, we are in legacy wep mode (group key only), otherwise we are
2338 * in 1X mode.
2339 * In legacy wep mode, we use another host command to the uCode.
2340 */
2341 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2342 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2343 if (cmd == SET_KEY)
2344 is_default_wep_key = !ctx->key_mapping_keys;
2345 else
2346 is_default_wep_key =
2347 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2348 }
2349
2350
2351 switch (cmd) {
2352 case SET_KEY:
2353 if (is_default_wep_key) {
2354 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2355 break;
2356 }
2357 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2358 if (ret) {
2359 /*
2360 * can't add key for RX, but we don't need it
2361 * in the device for TX so still return 0
2362 */
2363 ret = 0;
2364 key->hw_key_idx = WEP_INVALID_OFFSET;
2365 }
2366
2367 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2368 break;
2369 case DISABLE_KEY:
2370 if (is_default_wep_key)
2371 ret = iwl_remove_default_wep_key(priv, ctx, key);
2372 else
2373 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2374
2375 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2376 break;
2377 default:
2378 ret = -EINVAL;
2379 }
2380
2381 mutex_unlock(&priv->shrd->mutex);
2382 IWL_DEBUG_MAC80211(priv, "leave\n");
2383
2384 return ret;
2385 }
2386
2387 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2388 struct ieee80211_vif *vif,
2389 enum ieee80211_ampdu_mlme_action action,
2390 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2391 u8 buf_size)
2392 {
2393 struct iwl_priv *priv = hw->priv;
2394 int ret = -EINVAL;
2395 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2396 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
2397
2398 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2399 sta->addr, tid);
2400
2401 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2402 return -EACCES;
2403
2404 mutex_lock(&priv->shrd->mutex);
2405
2406 switch (action) {
2407 case IEEE80211_AMPDU_RX_START:
2408 IWL_DEBUG_HT(priv, "start Rx\n");
2409 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2410 break;
2411 case IEEE80211_AMPDU_RX_STOP:
2412 IWL_DEBUG_HT(priv, "stop Rx\n");
2413 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2414 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2415 ret = 0;
2416 break;
2417 case IEEE80211_AMPDU_TX_START:
2418 IWL_DEBUG_HT(priv, "start Tx\n");
2419 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2420 if (ret == 0) {
2421 priv->agg_tids_count++;
2422 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2423 priv->agg_tids_count);
2424 }
2425 break;
2426 case IEEE80211_AMPDU_TX_STOP:
2427 IWL_DEBUG_HT(priv, "stop Tx\n");
2428 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2429 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2430 priv->agg_tids_count--;
2431 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2432 priv->agg_tids_count);
2433 }
2434 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2435 ret = 0;
2436 if (priv->cfg->ht_params &&
2437 priv->cfg->ht_params->use_rts_for_aggregation) {
2438 /*
2439 * switch off RTS/CTS if it was previously enabled
2440 */
2441 sta_priv->lq_sta.lq.general_params.flags &=
2442 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2443 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2444 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2445 }
2446 break;
2447 case IEEE80211_AMPDU_TX_OPERATIONAL:
2448 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2449
2450 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
2451 tid, buf_size);
2452
2453 /*
2454 * If the limit is 0, then it wasn't initialised yet,
2455 * use the default. We can do that since we take the
2456 * minimum below, and we don't want to go above our
2457 * default due to hardware restrictions.
2458 */
2459 if (sta_priv->max_agg_bufsize == 0)
2460 sta_priv->max_agg_bufsize =
2461 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2462
2463 /*
2464 * Even though in theory the peer could have different
2465 * aggregation reorder buffer sizes for different sessions,
2466 * our ucode doesn't allow for that and has a global limit
2467 * for each station. Therefore, use the minimum of all the
2468 * aggregation sessions and our default value.
2469 */
2470 sta_priv->max_agg_bufsize =
2471 min(sta_priv->max_agg_bufsize, buf_size);
2472
2473 if (priv->cfg->ht_params &&
2474 priv->cfg->ht_params->use_rts_for_aggregation) {
2475 /*
2476 * switch to RTS/CTS if it is the prefer protection
2477 * method for HT traffic
2478 */
2479
2480 sta_priv->lq_sta.lq.general_params.flags |=
2481 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2482 }
2483
2484 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2485 sta_priv->max_agg_bufsize;
2486
2487 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2488 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2489
2490 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2491 sta->addr, tid);
2492 ret = 0;
2493 break;
2494 }
2495 mutex_unlock(&priv->shrd->mutex);
2496
2497 return ret;
2498 }
2499
2500 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2501 struct ieee80211_vif *vif,
2502 struct ieee80211_sta *sta)
2503 {
2504 struct iwl_priv *priv = hw->priv;
2505 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2506 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2507 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2508 int ret;
2509 u8 sta_id;
2510
2511 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2512 sta->addr);
2513 mutex_lock(&priv->shrd->mutex);
2514 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2515 sta->addr);
2516 sta_priv->common.sta_id = IWL_INVALID_STATION;
2517
2518 atomic_set(&sta_priv->pending_frames, 0);
2519 if (vif->type == NL80211_IFTYPE_AP)
2520 sta_priv->client = true;
2521
2522 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2523 is_ap, sta, &sta_id);
2524 if (ret) {
2525 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2526 sta->addr, ret);
2527 /* Should we return success if return code is EEXIST ? */
2528 mutex_unlock(&priv->shrd->mutex);
2529 return ret;
2530 }
2531
2532 sta_priv->common.sta_id = sta_id;
2533
2534 /* Initialize rate scaling */
2535 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2536 sta->addr);
2537 iwl_rs_rate_init(priv, sta, sta_id);
2538 mutex_unlock(&priv->shrd->mutex);
2539
2540 return 0;
2541 }
2542
2543 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2544 struct ieee80211_channel_switch *ch_switch)
2545 {
2546 struct iwl_priv *priv = hw->priv;
2547 const struct iwl_channel_info *ch_info;
2548 struct ieee80211_conf *conf = &hw->conf;
2549 struct ieee80211_channel *channel = ch_switch->channel;
2550 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2551 /*
2552 * MULTI-FIXME
2553 * When we add support for multiple interfaces, we need to
2554 * revisit this. The channel switch command in the device
2555 * only affects the BSS context, but what does that really
2556 * mean? And what if we get a CSA on the second interface?
2557 * This needs a lot of work.
2558 */
2559 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2560 u16 ch;
2561
2562 IWL_DEBUG_MAC80211(priv, "enter\n");
2563
2564 mutex_lock(&priv->shrd->mutex);
2565
2566 if (iwl_is_rfkill(priv->shrd))
2567 goto out;
2568
2569 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2570 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2571 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2572 goto out;
2573
2574 if (!iwl_is_associated_ctx(ctx))
2575 goto out;
2576
2577 if (!priv->cfg->lib->set_channel_switch)
2578 goto out;
2579
2580 ch = channel->hw_value;
2581 if (le16_to_cpu(ctx->active.channel) == ch)
2582 goto out;
2583
2584 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2585 if (!is_channel_valid(ch_info)) {
2586 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2587 goto out;
2588 }
2589
2590 spin_lock_irq(&priv->shrd->lock);
2591
2592 priv->current_ht_config.smps = conf->smps_mode;
2593
2594 /* Configure HT40 channels */
2595 ctx->ht.enabled = conf_is_ht(conf);
2596 if (ctx->ht.enabled) {
2597 if (conf_is_ht40_minus(conf)) {
2598 ctx->ht.extension_chan_offset =
2599 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2600 ctx->ht.is_40mhz = true;
2601 } else if (conf_is_ht40_plus(conf)) {
2602 ctx->ht.extension_chan_offset =
2603 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2604 ctx->ht.is_40mhz = true;
2605 } else {
2606 ctx->ht.extension_chan_offset =
2607 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2608 ctx->ht.is_40mhz = false;
2609 }
2610 } else
2611 ctx->ht.is_40mhz = false;
2612
2613 if ((le16_to_cpu(ctx->staging.channel) != ch))
2614 ctx->staging.flags = 0;
2615
2616 iwl_set_rxon_channel(priv, channel, ctx);
2617 iwl_set_rxon_ht(priv, ht_conf);
2618 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2619
2620 spin_unlock_irq(&priv->shrd->lock);
2621
2622 iwl_set_rate(priv);
2623 /*
2624 * at this point, staging_rxon has the
2625 * configuration for channel switch
2626 */
2627 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2628 priv->switch_channel = cpu_to_le16(ch);
2629 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2630 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2631 priv->switch_channel = 0;
2632 ieee80211_chswitch_done(ctx->vif, false);
2633 }
2634
2635 out:
2636 mutex_unlock(&priv->shrd->mutex);
2637 IWL_DEBUG_MAC80211(priv, "leave\n");
2638 }
2639
2640 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2641 unsigned int changed_flags,
2642 unsigned int *total_flags,
2643 u64 multicast)
2644 {
2645 struct iwl_priv *priv = hw->priv;
2646 __le32 filter_or = 0, filter_nand = 0;
2647 struct iwl_rxon_context *ctx;
2648
2649 #define CHK(test, flag) do { \
2650 if (*total_flags & (test)) \
2651 filter_or |= (flag); \
2652 else \
2653 filter_nand |= (flag); \
2654 } while (0)
2655
2656 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2657 changed_flags, *total_flags);
2658
2659 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2660 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2661 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2662 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2663
2664 #undef CHK
2665
2666 mutex_lock(&priv->shrd->mutex);
2667
2668 for_each_context(priv, ctx) {
2669 ctx->staging.filter_flags &= ~filter_nand;
2670 ctx->staging.filter_flags |= filter_or;
2671
2672 /*
2673 * Not committing directly because hardware can perform a scan,
2674 * but we'll eventually commit the filter flags change anyway.
2675 */
2676 }
2677
2678 mutex_unlock(&priv->shrd->mutex);
2679
2680 /*
2681 * Receiving all multicast frames is always enabled by the
2682 * default flags setup in iwl_connection_init_rx_config()
2683 * since we currently do not support programming multicast
2684 * filters into the device.
2685 */
2686 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2687 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2688 }
2689
2690 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2691 {
2692 struct iwl_priv *priv = hw->priv;
2693
2694 mutex_lock(&priv->shrd->mutex);
2695 IWL_DEBUG_MAC80211(priv, "enter\n");
2696
2697 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2698 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2699 goto done;
2700 }
2701 if (iwl_is_rfkill(priv->shrd)) {
2702 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2703 goto done;
2704 }
2705
2706 /*
2707 * mac80211 will not push any more frames for transmit
2708 * until the flush is completed
2709 */
2710 if (drop) {
2711 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2712 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2713 IWL_ERR(priv, "flush request fail\n");
2714 goto done;
2715 }
2716 }
2717 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2718 iwl_trans_wait_tx_queue_empty(trans(priv));
2719 done:
2720 mutex_unlock(&priv->shrd->mutex);
2721 IWL_DEBUG_MAC80211(priv, "leave\n");
2722 }
2723
2724 void iwlagn_disable_roc(struct iwl_priv *priv)
2725 {
2726 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2727
2728 lockdep_assert_held(&priv->shrd->mutex);
2729
2730 if (!priv->hw_roc_setup)
2731 return;
2732
2733 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2734 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2735
2736 priv->hw_roc_channel = NULL;
2737
2738 memset(ctx->staging.node_addr, 0, ETH_ALEN);
2739
2740 iwlagn_commit_rxon(priv, ctx);
2741
2742 ctx->is_active = false;
2743 priv->hw_roc_setup = false;
2744 }
2745
2746 static void iwlagn_disable_roc_work(struct work_struct *work)
2747 {
2748 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2749 hw_roc_disable_work.work);
2750
2751 mutex_lock(&priv->shrd->mutex);
2752 iwlagn_disable_roc(priv);
2753 mutex_unlock(&priv->shrd->mutex);
2754 }
2755
2756 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2757 struct ieee80211_channel *channel,
2758 enum nl80211_channel_type channel_type,
2759 int duration)
2760 {
2761 struct iwl_priv *priv = hw->priv;
2762 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2763 int err = 0;
2764
2765 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2766 return -EOPNOTSUPP;
2767
2768 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2769 return -EOPNOTSUPP;
2770
2771 mutex_lock(&priv->shrd->mutex);
2772
2773 /*
2774 * TODO: Remove this hack! Firmware needs to be updated
2775 * to allow longer off-channel periods in scanning for
2776 * this use case, based on a flag (and we'll need an API
2777 * flag in the firmware when it has that).
2778 */
2779 if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
2780 duration = 80;
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 cancel_delayed_work(&priv->hw_roc_disable_work);
2791
2792 if (!ctx->is_active) {
2793 ctx->is_active = true;
2794 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2795 memcpy(ctx->staging.node_addr,
2796 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2797 ETH_ALEN);
2798 memcpy(ctx->staging.bssid_addr,
2799 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2800 ETH_ALEN);
2801 err = iwlagn_commit_rxon(priv, ctx);
2802 if (err)
2803 goto out;
2804 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2805 RXON_FILTER_PROMISC_MSK |
2806 RXON_FILTER_CTL2HOST_MSK;
2807
2808 err = iwlagn_commit_rxon(priv, ctx);
2809 if (err) {
2810 iwlagn_disable_roc(priv);
2811 goto out;
2812 }
2813 priv->hw_roc_setup = true;
2814 }
2815
2816 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2817 if (err)
2818 iwlagn_disable_roc(priv);
2819
2820 out:
2821 mutex_unlock(&priv->shrd->mutex);
2822
2823 return err;
2824 }
2825
2826 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2827 {
2828 struct iwl_priv *priv = hw->priv;
2829
2830 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2831 return -EOPNOTSUPP;
2832
2833 mutex_lock(&priv->shrd->mutex);
2834 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2835 iwlagn_disable_roc(priv);
2836 mutex_unlock(&priv->shrd->mutex);
2837
2838 return 0;
2839 }
2840
2841 static int iwl_mac_tx_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2842 const u8 *bssid, enum ieee80211_tx_sync_type type)
2843 {
2844 struct iwl_priv *priv = hw->priv;
2845 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2846 struct iwl_rxon_context *ctx = vif_priv->ctx;
2847 int ret;
2848 u8 sta_id;
2849
2850 mutex_lock(&priv->shrd->mutex);
2851
2852 if (iwl_is_associated_ctx(ctx)) {
2853 ret = 0;
2854 goto out;
2855 }
2856
2857 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2858 ret = -EBUSY;
2859 goto out;
2860 }
2861
2862 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
2863 if (ret)
2864 goto out;
2865
2866 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
2867 ret = -EIO;
2868 goto out_remove_sta;
2869 }
2870
2871 memcpy(ctx->bssid, bssid, ETH_ALEN);
2872 ctx->preauth_bssid = true;
2873
2874 ret = iwlagn_commit_rxon(priv, ctx);
2875
2876 if (ret == 0)
2877 goto out;
2878
2879 out_remove_sta:
2880 iwl_remove_station(priv, sta_id, bssid);
2881 out:
2882 mutex_unlock(&priv->shrd->mutex);
2883 return ret;
2884 }
2885
2886 static void iwl_mac_finish_tx_sync(struct ieee80211_hw *hw,
2887 struct ieee80211_vif *vif,
2888 const u8 *bssid,
2889 enum ieee80211_tx_sync_type type)
2890 {
2891 struct iwl_priv *priv = hw->priv;
2892 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2893 struct iwl_rxon_context *ctx = vif_priv->ctx;
2894
2895 mutex_lock(&priv->shrd->mutex);
2896
2897 if (iwl_is_associated_ctx(ctx))
2898 goto out;
2899
2900 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
2901 ctx->preauth_bssid = false;
2902 /* no need to commit */
2903 out:
2904 mutex_unlock(&priv->shrd->mutex);
2905 }
2906
2907 /*****************************************************************************
2908 *
2909 * driver setup and teardown
2910 *
2911 *****************************************************************************/
2912
2913 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2914 {
2915 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2916
2917 init_waitqueue_head(&priv->shrd->wait_command_queue);
2918
2919 INIT_WORK(&priv->restart, iwl_bg_restart);
2920 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2921 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2922 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2923 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2924 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2925 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2926 iwlagn_disable_roc_work);
2927
2928 iwl_setup_scan_deferred_work(priv);
2929
2930 if (priv->cfg->lib->bt_setup_deferred_work)
2931 priv->cfg->lib->bt_setup_deferred_work(priv);
2932
2933 init_timer(&priv->statistics_periodic);
2934 priv->statistics_periodic.data = (unsigned long)priv;
2935 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2936
2937 init_timer(&priv->ucode_trace);
2938 priv->ucode_trace.data = (unsigned long)priv;
2939 priv->ucode_trace.function = iwl_bg_ucode_trace;
2940
2941 init_timer(&priv->watchdog);
2942 priv->watchdog.data = (unsigned long)priv;
2943 priv->watchdog.function = iwl_bg_watchdog;
2944 }
2945
2946 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2947 {
2948 if (priv->cfg->lib->cancel_deferred_work)
2949 priv->cfg->lib->cancel_deferred_work(priv);
2950
2951 cancel_work_sync(&priv->run_time_calib_work);
2952 cancel_work_sync(&priv->beacon_update);
2953
2954 iwl_cancel_scan_deferred_work(priv);
2955
2956 cancel_work_sync(&priv->bt_full_concurrency);
2957 cancel_work_sync(&priv->bt_runtime_config);
2958 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
2959
2960 del_timer_sync(&priv->statistics_periodic);
2961 del_timer_sync(&priv->ucode_trace);
2962 }
2963
2964 static void iwl_init_hw_rates(struct iwl_priv *priv,
2965 struct ieee80211_rate *rates)
2966 {
2967 int i;
2968
2969 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2970 rates[i].bitrate = iwl_rates[i].ieee * 5;
2971 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2972 rates[i].hw_value_short = i;
2973 rates[i].flags = 0;
2974 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2975 /*
2976 * If CCK != 1M then set short preamble rate flag.
2977 */
2978 rates[i].flags |=
2979 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2980 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2981 }
2982 }
2983 }
2984
2985 static int iwl_init_drv(struct iwl_priv *priv)
2986 {
2987 int ret;
2988
2989 spin_lock_init(&priv->shrd->sta_lock);
2990
2991 mutex_init(&priv->shrd->mutex);
2992
2993 priv->ieee_channels = NULL;
2994 priv->ieee_rates = NULL;
2995 priv->band = IEEE80211_BAND_2GHZ;
2996
2997 priv->iw_mode = NL80211_IFTYPE_STATION;
2998 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
2999 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3000 priv->agg_tids_count = 0;
3001
3002 /* initialize force reset */
3003 priv->force_reset[IWL_RF_RESET].reset_duration =
3004 IWL_DELAY_NEXT_FORCE_RF_RESET;
3005 priv->force_reset[IWL_FW_RESET].reset_duration =
3006 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3007
3008 priv->rx_statistics_jiffies = jiffies;
3009
3010 /* Choose which receivers/antennas to use */
3011 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3012
3013 iwl_init_scan_params(priv);
3014
3015 /* init bt coex */
3016 if (priv->cfg->bt_params &&
3017 priv->cfg->bt_params->advanced_bt_coexist) {
3018 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3019 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3020 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3021 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3022 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3023 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3024 }
3025
3026 ret = iwl_init_channel_map(priv);
3027 if (ret) {
3028 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3029 goto err;
3030 }
3031
3032 ret = iwl_init_geos(priv);
3033 if (ret) {
3034 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3035 goto err_free_channel_map;
3036 }
3037 iwl_init_hw_rates(priv, priv->ieee_rates);
3038
3039 return 0;
3040
3041 err_free_channel_map:
3042 iwl_free_channel_map(priv);
3043 err:
3044 return ret;
3045 }
3046
3047 static void iwl_uninit_drv(struct iwl_priv *priv)
3048 {
3049 iwl_calib_free_results(priv);
3050 iwl_free_geos(priv);
3051 iwl_free_channel_map(priv);
3052 if (priv->tx_cmd_pool)
3053 kmem_cache_destroy(priv->tx_cmd_pool);
3054 kfree(priv->scan_cmd);
3055 kfree(priv->beacon_cmd);
3056 #ifdef CONFIG_IWLWIFI_DEBUGFS
3057 kfree(priv->wowlan_sram);
3058 #endif
3059 }
3060
3061 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3062 enum ieee80211_rssi_event rssi_event)
3063 {
3064 struct iwl_priv *priv = hw->priv;
3065
3066 mutex_lock(&priv->shrd->mutex);
3067
3068 if (priv->cfg->bt_params &&
3069 priv->cfg->bt_params->advanced_bt_coexist) {
3070 if (rssi_event == RSSI_EVENT_LOW)
3071 priv->bt_enable_pspoll = true;
3072 else if (rssi_event == RSSI_EVENT_HIGH)
3073 priv->bt_enable_pspoll = false;
3074
3075 iwlagn_send_advance_bt_config(priv);
3076 } else {
3077 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3078 "ignoring RSSI callback\n");
3079 }
3080
3081 mutex_unlock(&priv->shrd->mutex);
3082 }
3083
3084 struct ieee80211_ops iwlagn_hw_ops = {
3085 .tx = iwlagn_mac_tx,
3086 .start = iwlagn_mac_start,
3087 .stop = iwlagn_mac_stop,
3088 #ifdef CONFIG_PM_SLEEP
3089 .suspend = iwlagn_mac_suspend,
3090 .resume = iwlagn_mac_resume,
3091 #endif
3092 .add_interface = iwl_mac_add_interface,
3093 .remove_interface = iwl_mac_remove_interface,
3094 .change_interface = iwl_mac_change_interface,
3095 .config = iwlagn_mac_config,
3096 .configure_filter = iwlagn_configure_filter,
3097 .set_key = iwlagn_mac_set_key,
3098 .update_tkip_key = iwlagn_mac_update_tkip_key,
3099 .set_rekey_data = iwlagn_mac_set_rekey_data,
3100 .conf_tx = iwl_mac_conf_tx,
3101 .bss_info_changed = iwlagn_bss_info_changed,
3102 .ampdu_action = iwlagn_mac_ampdu_action,
3103 .hw_scan = iwl_mac_hw_scan,
3104 .sta_notify = iwlagn_mac_sta_notify,
3105 .sta_add = iwlagn_mac_sta_add,
3106 .sta_remove = iwl_mac_sta_remove,
3107 .channel_switch = iwlagn_mac_channel_switch,
3108 .flush = iwlagn_mac_flush,
3109 .tx_last_beacon = iwl_mac_tx_last_beacon,
3110 .remain_on_channel = iwl_mac_remain_on_channel,
3111 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3112 .rssi_callback = iwl_mac_rssi_callback,
3113 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3114 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3115 .tx_sync = iwl_mac_tx_sync,
3116 .finish_tx_sync = iwl_mac_finish_tx_sync,
3117 };
3118
3119 static u32 iwl_hw_detect(struct iwl_priv *priv)
3120 {
3121 return iwl_read32(bus(priv), CSR_HW_REV);
3122 }
3123
3124 /* Size of one Rx buffer in host DRAM */
3125 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3126 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3127
3128 static int iwl_set_hw_params(struct iwl_priv *priv)
3129 {
3130 if (iwlagn_mod_params.amsdu_size_8K)
3131 hw_params(priv).rx_page_order =
3132 get_order(IWL_RX_BUF_SIZE_8K);
3133 else
3134 hw_params(priv).rx_page_order =
3135 get_order(IWL_RX_BUF_SIZE_4K);
3136
3137 if (iwlagn_mod_params.disable_11n)
3138 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3139
3140 hw_params(priv).num_ampdu_queues =
3141 priv->cfg->base_params->num_of_ampdu_queues;
3142 hw_params(priv).shadow_reg_enable =
3143 priv->cfg->base_params->shadow_reg_enable;
3144 hw_params(priv).sku = priv->cfg->sku;
3145 hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
3146
3147 /* Device-specific setup */
3148 return priv->cfg->lib->set_hw_params(priv);
3149 }
3150
3151 /* This function both allocates and initializes hw and priv. */
3152 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3153 {
3154 struct iwl_priv *priv;
3155 /* mac80211 allocates memory for this device instance, including
3156 * space for this driver's private structure */
3157 struct ieee80211_hw *hw;
3158
3159 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3160 if (hw == NULL) {
3161 pr_err("%s: Can not allocate network device\n",
3162 cfg->name);
3163 goto out;
3164 }
3165
3166 priv = hw->priv;
3167 priv->hw = hw;
3168
3169 out:
3170 return hw;
3171 }
3172
3173 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3174 struct iwl_cfg *cfg)
3175 {
3176 int err = 0;
3177 struct iwl_priv *priv;
3178 struct ieee80211_hw *hw;
3179 u16 num_mac;
3180 u32 hw_rev;
3181
3182 /************************
3183 * 1. Allocating HW data
3184 ************************/
3185 hw = iwl_alloc_all(cfg);
3186 if (!hw) {
3187 err = -ENOMEM;
3188 goto out;
3189 }
3190
3191 priv = hw->priv;
3192 priv->bus = bus;
3193 priv->shrd = &priv->_shrd;
3194 bus->shrd = priv->shrd;
3195 priv->shrd->bus = bus;
3196 priv->shrd->priv = priv;
3197
3198 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3199 if (priv->shrd->trans == NULL) {
3200 err = -ENOMEM;
3201 goto out_free_traffic_mem;
3202 }
3203
3204 /* At this point both hw and priv are allocated. */
3205
3206 SET_IEEE80211_DEV(hw, priv->bus->dev);
3207
3208 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3209 priv->cfg = cfg;
3210
3211 /* is antenna coupling more than 35dB ? */
3212 priv->bt_ant_couple_ok =
3213 (iwlagn_mod_params.ant_coupling >
3214 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3215 true : false;
3216
3217 /* enable/disable bt channel inhibition */
3218 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3219 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3220 (priv->bt_ch_announce) ? "On" : "Off");
3221
3222 if (iwl_alloc_traffic_mem(priv))
3223 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3224
3225 /* these spin locks will be used in apm_ops.init and EEPROM access
3226 * we should init now
3227 */
3228 spin_lock_init(&bus(priv)->reg_lock);
3229 spin_lock_init(&priv->shrd->lock);
3230
3231 /*
3232 * stop and reset the on-board processor just in case it is in a
3233 * strange state ... like being left stranded by a primary kernel
3234 * and this is now the kdump kernel trying to start up
3235 */
3236 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3237
3238 /***********************
3239 * 3. Read REV register
3240 ***********************/
3241 hw_rev = iwl_hw_detect(priv);
3242 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3243 priv->cfg->name, hw_rev);
3244
3245 err = iwl_trans_request_irq(trans(priv));
3246 if (err)
3247 goto out_free_trans;
3248
3249 if (iwl_trans_prepare_card_hw(trans(priv))) {
3250 err = -EIO;
3251 IWL_WARN(priv, "Failed, HW not ready\n");
3252 goto out_free_trans;
3253 }
3254
3255 /*****************
3256 * 4. Read EEPROM
3257 *****************/
3258 /* Read the EEPROM */
3259 err = iwl_eeprom_init(priv, hw_rev);
3260 if (err) {
3261 IWL_ERR(priv, "Unable to init EEPROM\n");
3262 goto out_free_trans;
3263 }
3264 err = iwl_eeprom_check_version(priv);
3265 if (err)
3266 goto out_free_eeprom;
3267
3268 err = iwl_eeprom_check_sku(priv);
3269 if (err)
3270 goto out_free_eeprom;
3271
3272 /* extract MAC Address */
3273 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3274 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3275 priv->hw->wiphy->addresses = priv->addresses;
3276 priv->hw->wiphy->n_addresses = 1;
3277 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3278 if (num_mac > 1) {
3279 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3280 ETH_ALEN);
3281 priv->addresses[1].addr[5]++;
3282 priv->hw->wiphy->n_addresses++;
3283 }
3284
3285 /************************
3286 * 5. Setup HW constants
3287 ************************/
3288 if (iwl_set_hw_params(priv)) {
3289 err = -ENOENT;
3290 IWL_ERR(priv, "failed to set hw parameters\n");
3291 goto out_free_eeprom;
3292 }
3293
3294 /*******************
3295 * 6. Setup priv
3296 *******************/
3297
3298 err = iwl_init_drv(priv);
3299 if (err)
3300 goto out_free_eeprom;
3301 /* At this point both hw and priv are initialized. */
3302
3303 /********************
3304 * 7. Setup services
3305 ********************/
3306 iwl_setup_deferred_work(priv);
3307 iwl_setup_rx_handlers(priv);
3308 iwl_testmode_init(priv);
3309
3310 /*********************************************
3311 * 8. Enable interrupts
3312 *********************************************/
3313
3314 iwl_enable_rfkill_int(priv);
3315
3316 /* If platform's RF_KILL switch is NOT set to KILL */
3317 if (iwl_read32(bus(priv),
3318 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3319 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3320 else
3321 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3322
3323 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3324 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3325
3326 iwl_power_initialize(priv);
3327 iwl_tt_initialize(priv);
3328
3329 init_completion(&priv->firmware_loading_complete);
3330
3331 err = iwl_request_firmware(priv, true);
3332 if (err)
3333 goto out_destroy_workqueue;
3334
3335 return 0;
3336
3337 out_destroy_workqueue:
3338 destroy_workqueue(priv->shrd->workqueue);
3339 priv->shrd->workqueue = NULL;
3340 iwl_uninit_drv(priv);
3341 out_free_eeprom:
3342 iwl_eeprom_free(priv);
3343 out_free_trans:
3344 iwl_trans_free(trans(priv));
3345 out_free_traffic_mem:
3346 iwl_free_traffic_mem(priv);
3347 ieee80211_free_hw(priv->hw);
3348 out:
3349 return err;
3350 }
3351
3352 void __devexit iwl_remove(struct iwl_priv * priv)
3353 {
3354 wait_for_completion(&priv->firmware_loading_complete);
3355
3356 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3357
3358 iwl_dbgfs_unregister(priv);
3359
3360 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3361 * to be called and iwl_down since we are removing the device
3362 * we need to set STATUS_EXIT_PENDING bit.
3363 */
3364 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3365
3366 iwl_testmode_cleanup(priv);
3367 iwl_leds_exit(priv);
3368
3369 if (priv->mac80211_registered) {
3370 ieee80211_unregister_hw(priv->hw);
3371 priv->mac80211_registered = 0;
3372 }
3373
3374 iwl_tt_exit(priv);
3375
3376 /*This will stop the queues, move the device to low power state */
3377 iwl_trans_stop_device(trans(priv));
3378
3379 iwl_dealloc_ucode(priv);
3380
3381 iwl_eeprom_free(priv);
3382
3383 /*netif_stop_queue(dev); */
3384 flush_workqueue(priv->shrd->workqueue);
3385
3386 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3387 * priv->shrd->workqueue... so we can't take down the workqueue
3388 * until now... */
3389 destroy_workqueue(priv->shrd->workqueue);
3390 priv->shrd->workqueue = NULL;
3391 iwl_free_traffic_mem(priv);
3392
3393 iwl_trans_free(trans(priv));
3394
3395 iwl_uninit_drv(priv);
3396
3397 dev_kfree_skb(priv->beacon_skb);
3398
3399 ieee80211_free_hw(priv->hw);
3400 }
3401
3402
3403 /*****************************************************************************
3404 *
3405 * driver and module entry point
3406 *
3407 *****************************************************************************/
3408 static int __init iwl_init(void)
3409 {
3410
3411 int ret;
3412 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3413 pr_info(DRV_COPYRIGHT "\n");
3414
3415 ret = iwlagn_rate_control_register();
3416 if (ret) {
3417 pr_err("Unable to register rate control algorithm: %d\n", ret);
3418 return ret;
3419 }
3420
3421 ret = iwl_pci_register_driver();
3422
3423 if (ret)
3424 goto error_register;
3425 return ret;
3426
3427 error_register:
3428 iwlagn_rate_control_unregister();
3429 return ret;
3430 }
3431
3432 static void __exit iwl_exit(void)
3433 {
3434 iwl_pci_unregister_driver();
3435 iwlagn_rate_control_unregister();
3436 }
3437
3438 module_exit(iwl_exit);
3439 module_init(iwl_init);
3440
3441 #ifdef CONFIG_IWLWIFI_DEBUG
3442 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3443 S_IRUGO | S_IWUSR);
3444 MODULE_PARM_DESC(debug, "debug output mask");
3445 #endif
3446
3447 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3448 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3449 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3450 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3451 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3452 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3453 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3454 int, S_IRUGO);
3455 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3456 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3457 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3458
3459 module_param_named(ucode_alternative,
3460 iwlagn_mod_params.wanted_ucode_alternative,
3461 int, S_IRUGO);
3462 MODULE_PARM_DESC(ucode_alternative,
3463 "specify ucode alternative to use from ucode file");
3464
3465 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3466 int, S_IRUGO);
3467 MODULE_PARM_DESC(antenna_coupling,
3468 "specify antenna coupling in dB (defualt: 0 dB)");
3469
3470 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3471 bool, S_IRUGO);
3472 MODULE_PARM_DESC(bt_ch_inhibition,
3473 "Enable BT channel inhibition (default: enable)");
3474
3475 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3476 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3477
3478 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3479 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3480
3481 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3482 MODULE_PARM_DESC(wd_disable,
3483 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3484
3485 /*
3486 * set bt_coex_active to true, uCode will do kill/defer
3487 * every time the priority line is asserted (BT is sending signals on the
3488 * priority line in the PCIx).
3489 * set bt_coex_active to false, uCode will ignore the BT activity and
3490 * perform the normal operation
3491 *
3492 * User might experience transmit issue on some platform due to WiFi/BT
3493 * co-exist problem. The possible behaviors are:
3494 * Able to scan and finding all the available AP
3495 * Not able to associate with any AP
3496 * On those platforms, WiFi communication can be restored by set
3497 * "bt_coex_active" module parameter to "false"
3498 *
3499 * default: bt_coex_active = true (BT_COEX_ENABLE)
3500 */
3501 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3502 bool, S_IRUGO);
3503 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3504
3505 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3506 MODULE_PARM_DESC(led_mode, "0=system default, "
3507 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3508
3509 module_param_named(power_save, iwlagn_mod_params.power_save,
3510 bool, S_IRUGO);
3511 MODULE_PARM_DESC(power_save,
3512 "enable WiFi power management (default: disable)");
3513
3514 module_param_named(power_level, iwlagn_mod_params.power_level,
3515 int, S_IRUGO);
3516 MODULE_PARM_DESC(power_level,
3517 "default power save level (range from 1 - 5, default: 1)");
3518
3519 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3520 bool, S_IRUGO);
3521 MODULE_PARM_DESC(auto_agg,
3522 "enable agg w/o check traffic load (default: enable)");
3523
3524 /*
3525 * For now, keep using power level 1 instead of automatically
3526 * adjusting ...
3527 */
3528 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3529 bool, S_IRUGO);
3530 MODULE_PARM_DESC(no_sleep_autoadjust,
3531 "don't automatically adjust sleep level "
3532 "according to maximum network latency (default: true)");
Linux with added FPC-III support