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iwlagn: iwl_rx_queue moves to the iwl_trans_pcie
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
901069c7 3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
b481de9c
ZY		 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:
759ef89f 25 * Intel Linux Wireless <ilw@linux.intel.com>
b481de9c
ZY		 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
b481de9c
ZY		 29#include <linux/kernel.h>
30#include <linux/module.h>
b481de9c 31#include <linux/init.h>
5a0e3ad6 32#include <linux/slab.h>
b481de9c
ZY		 33#include <linux/dma-mapping.h>
34#include <linux/delay.h>
d43c36dc 35#include <linux/sched.h>
b481de9c
ZY		 36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
b481de9c 38#include <linux/firmware.h>
b481de9c
ZY		 39#include <linux/etherdevice.h>
40#include <linux/if_arp.h>
41
b481de9c
ZY		 42#include <net/mac80211.h>
43
44#include <asm/div64.h>
45
6bc913bd 46#include "iwl-eeprom.h"
3e0d4cb1 47#include "iwl-dev.h"
fee1247a 48#include "iwl-core.h"
3395f6e9 49#include "iwl-io.h"
b481de9c 50#include "iwl-helpers.h"
6974e363 51#include "iwl-sta.h"
0de76736 52#include "iwl-agn-calib.h"
a1175124 53#include "iwl-agn.h"
48f20d35 54#include "iwl-shared.h"
d5934110 55#include "iwl-bus.h"
c85eb619 56#include "iwl-trans.h"
416e1438 57
b481de9c
ZY		 58/******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
b481de9c
ZY		 64/*
65 * module name, copyright, version, etc.
b481de9c 66 */
d783b061 67#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
b481de9c 68
0a6857e7 69#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 70#define VD "d"
71#else
72#define VD
73#endif
74
81963d68 75#define DRV_VERSION IWLWIFI_VERSION VD
b481de9c 76
b481de9c
ZY		 77
78MODULE_DESCRIPTION(DRV_DESCRIPTION);
79MODULE_VERSION(DRV_VERSION);
a7b75207 80MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
b481de9c
ZY		 81MODULE_LICENSE("GPL");
82
5b9f8cd3 83void iwl_update_chain_flags(struct iwl_priv *priv)
5da4b55f 84{
246ed355 85 struct iwl_rxon_context *ctx;
5da4b55f 86
e3f10cea
WYG		 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);
246ed355 91 }
5da4b55f
MA		 92}
93
47ff65c4
DH		 94/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95static void iwl_set_beacon_tim(struct iwl_priv *priv,
77834543
JB		 96 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
47ff65c4
DH		 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
8a98d49e 121int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
4bf64efd
TW		 122{
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
8a98d49e
JB		 124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
e419d62d 126 .flags = CMD_SYNC,
8a98d49e 127 };
0b5b3ff1 128 struct ieee80211_tx_info *info;
47ff65c4
DH		 129 u32 frame_size;
130 u32 rate_flags;
131 u32 rate;
8a98d49e 132
47ff65c4
DH		 133 /*
134 * We have to set up the TX command, the TX Beacon command, and the
135 * beacon contents.
136 */
4bf64efd 137
6ac2f839 138 lockdep_assert_held(&priv->shrd->mutex);
76d04815
JB		 139
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
950094cb 142 return 0;
76d04815
JB		 143 }
144
8a98d49e
JB		 145 if (WARN_ON(!priv->beacon_skb))
146 return -EINVAL;
147
4ce7cc2b
JB		 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;
8a98d49e
JB		 152 if (!tx_beacon_cmd)
153 return -ENOMEM;
154
155 frame_size = priv->beacon_skb->len;
4bf64efd 156
47ff65c4 157 /* Set up TX command fields */
4bf64efd 158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
76d04815 159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
47ff65c4
DH		 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;
4bf64efd 163
47ff65c4 164 /* Set up TX beacon command fields */
4ce7cc2b 165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
77834543 166 frame_size);
4bf64efd 167
47ff65c4 168 /* Set up packet rate and flags */
0b5b3ff1
JB		 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
0e1654fa 182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
d6189124 183 hw_params(priv).valid_tx_ant);
47ff65c4 184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
0b5b3ff1
JB		 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)
47ff65c4 190 rate_flags |= RATE_MCS_CCK_MSK;
0b5b3ff1
JB		 191
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
4bf64efd 194
8a98d49e 195 /* Submit command */
4ce7cc2b 196 cmd.len[0] = sizeof(*tx_beacon_cmd);
3fa50738 197 cmd.data[0] = tx_beacon_cmd;
4ce7cc2b
JB		 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;
7aaa1d79 202
e6bb4c9c 203 return iwl_trans_send_cmd(trans(priv), &cmd);
a8e74e27
SO		 204}
205
5b9f8cd3 206static void iwl_bg_beacon_update(struct work_struct *work)
b481de9c 207{
c79dd5b5
TW		 208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
b481de9c
ZY		 210 struct sk_buff *beacon;
211
6ac2f839 212 mutex_lock(&priv->shrd->mutex);
76d04815
JB		 213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
215 goto out;
216 }
b481de9c 217
60744f62
JB		 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
76d04815
JB		 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);
b481de9c 230 if (!beacon) {
77834543 231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
76d04815 232 goto out;
b481de9c
ZY		 233 }
234
b481de9c 235 /* new beacon skb is allocated every time; dispose previous.*/
77834543 236 dev_kfree_skb(priv->beacon_skb);
b481de9c 237
12e934dc 238 priv->beacon_skb = beacon;
b481de9c 239
2295c66b 240 iwlagn_send_beacon_cmd(priv);
76d04815 241 out:
6ac2f839 242 mutex_unlock(&priv->shrd->mutex);
b481de9c
ZY		 243}
244
fbba9410
WYG		 245static 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
63013ae3 250 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
fbba9410
WYG		 251 return;
252
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv))
255 return;
e55b517c 256 iwlagn_send_advance_bt_config(priv);
fbba9410
WYG		 257}
258
bee008b7
WYG		 259static 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);
246ed355 263 struct iwl_rxon_context *ctx;
bee008b7 264
6ac2f839 265 mutex_lock(&priv->shrd->mutex);
dc1a4068 266
63013ae3 267 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
dc1a4068 268 goto out;
bee008b7
WYG		 269
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv))
dc1a4068 272 goto out;
bee008b7
WYG		 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 */
246ed355 282 for_each_context(priv, ctx) {
e3f10cea 283 iwlagn_set_rxon_chain(priv, ctx);
805a3b81 284 iwlagn_commit_rxon(priv, ctx);
246ed355 285 }
bee008b7 286
e55b517c 287 iwlagn_send_advance_bt_config(priv);
dc1a4068 288out:
6ac2f839 289 mutex_unlock(&priv->shrd->mutex);
bee008b7
WYG		 290}
291
4e39317d 292/**
5b9f8cd3 293 * iwl_bg_statistics_periodic - Timer callback to queue statistics
4e39317d
EG		 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 */
5b9f8cd3 302static void iwl_bg_statistics_periodic(unsigned long data)
4e39317d
EG		 303{
304 struct iwl_priv *priv = (struct iwl_priv *)data;
305
63013ae3 306 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
4e39317d
EG		 307 return;
308
61780ee3
MA		 309 /* dont send host command if rf-kill is on */
310 if (!iwl_is_ready_rf(priv))
311 return;
312
ef8d5529 313 iwl_send_statistics_request(priv, CMD_ASYNC, false);
4e39317d
EG		 314}
315
a9e1cb6a
WYG		 316
317static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
318 u32 start_idx, u32 num_events,
319 u32 mode)
320{
321 u32 i;
322 u32 ptr; /* SRAM byte address of log data */
323 u32 ev, time, data; /* event log data */
324 unsigned long reg_flags;
325
326 if (mode == 0)
327 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
328 else
329 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
330
331 /* Make sure device is powered up for SRAM reads */
332 spin_lock_irqsave(&priv->reg_lock, reg_flags);
333 if (iwl_grab_nic_access(priv)) {
334 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
335 return;
336 }
337
338 /* Set starting address; reads will auto-increment */
02a7fa00 339 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
a9e1cb6a
WYG		 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++) {
02a7fa00
JB		 347 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
348 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
a9e1cb6a
WYG		 349 if (mode == 0) {
350 trace_iwlwifi_dev_ucode_cont_event(priv,
351 0, time, ev);
352 } else {
02a7fa00 353 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
a9e1cb6a
WYG		 354 trace_iwlwifi_dev_ucode_cont_event(priv,
355 time, data, ev);
356 }
357 }
358 /* Allow device to power down */
359 iwl_release_nic_access(priv);
360 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
361}
362
875295f1 363static void iwl_continuous_event_trace(struct iwl_priv *priv)
a9e1cb6a
WYG		 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
d7d5783c 371 base = priv->device_pointers.error_event_table;
4caab328 372 if (iwlagn_hw_valid_rtc_data_addr(base)) {
a9e1cb6a
WYG		 373 capacity = iwl_read_targ_mem(priv, base);
374 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
375 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
376 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
377 } else
378 return;
379
380 if (num_wraps == priv->event_log.num_wraps) {
381 iwl_print_cont_event_trace(priv,
382 base, priv->event_log.next_entry,
383 next_entry - priv->event_log.next_entry,
384 mode);
385 priv->event_log.non_wraps_count++;
386 } else {
387 if ((num_wraps - priv->event_log.num_wraps) > 1)
388 priv->event_log.wraps_more_count++;
389 else
390 priv->event_log.wraps_once_count++;
391 trace_iwlwifi_dev_ucode_wrap_event(priv,
392 num_wraps - priv->event_log.num_wraps,
393 next_entry, priv->event_log.next_entry);
394 if (next_entry < priv->event_log.next_entry) {
395 iwl_print_cont_event_trace(priv, base,
396 priv->event_log.next_entry,
397 capacity - priv->event_log.next_entry,
398 mode);
399
400 iwl_print_cont_event_trace(priv, base, 0,
401 next_entry, mode);
402 } else {
403 iwl_print_cont_event_trace(priv, base,
404 next_entry, capacity - next_entry,
405 mode);
406
407 iwl_print_cont_event_trace(priv, base, 0,
408 next_entry, mode);
409 }
410 }
411 priv->event_log.num_wraps = num_wraps;
412 priv->event_log.next_entry = next_entry;
413}
414
415/**
416 * iwl_bg_ucode_trace - Timer callback to log ucode event
417 *
418 * The timer is continually set to execute every
419 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
420 * this function is to perform continuous uCode event logging operation
421 * if enabled
422 */
423static void iwl_bg_ucode_trace(unsigned long data)
424{
425 struct iwl_priv *priv = (struct iwl_priv *)data;
426
63013ae3 427 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
a9e1cb6a
WYG		 428 return;
429
430 if (priv->event_log.ucode_trace) {
431 iwl_continuous_event_trace(priv);
432 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
433 mod_timer(&priv->ucode_trace,
434 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
435 }
436}
437
65550636
WYG		 438static void iwl_bg_tx_flush(struct work_struct *work)
439{
440 struct iwl_priv *priv =
441 container_of(work, struct iwl_priv, tx_flush);
442
63013ae3 443 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
65550636
WYG		 444 return;
445
446 /* do nothing if rf-kill is on */
447 if (!iwl_is_ready_rf(priv))
448 return;
449
c68744fb
WYG		 450 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
451 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
65550636
WYG		 452}
453
7d47618a
EG		 454/*****************************************************************************
455 *
456 * sysfs attributes
457 *
458 *****************************************************************************/
459
460#ifdef CONFIG_IWLWIFI_DEBUG
461
462/*
463 * The following adds a new attribute to the sysfs representation
464 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
465 * used for controlling the debug level.
466 *
467 * See the level definitions in iwl for details.
468 *
469 * The debug_level being managed using sysfs below is a per device debug
470 * level that is used instead of the global debug level if it (the per
471 * device debug level) is set.
472 */
473static ssize_t show_debug_level(struct device *d,
474 struct device_attribute *attr, char *buf)
475{
cac988a6 476 struct iwl_shared *shrd = dev_get_drvdata(d);
8f470ce3 477 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd));
7d47618a
EG		 478}
479static ssize_t store_debug_level(struct device *d,
480 struct device_attribute *attr,
481 const char *buf, size_t count)
482{
cac988a6
EG		 483 struct iwl_shared *shrd = dev_get_drvdata(d);
484 struct iwl_priv *priv = shrd->priv;
7d47618a
EG		 485 unsigned long val;
486 int ret;
487
488 ret = strict_strtoul(buf, 0, &val);
489 if (ret)
490 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
491 else {
8f470ce3 492 shrd->dbg_level_dev = val;
7d47618a 493 if (iwl_alloc_traffic_mem(priv))
8f470ce3 494 IWL_ERR(shrd->priv,
7d47618a
EG		 495 "Not enough memory to generate traffic log\n");
496 }
497 return strnlen(buf, count);
498}
499
500static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
501 show_debug_level, store_debug_level);
502
503
504#endif /* CONFIG_IWLWIFI_DEBUG */
505
506
507static ssize_t show_temperature(struct device *d,
508 struct device_attribute *attr, char *buf)
509{
cac988a6
EG		 510 struct iwl_shared *shrd = dev_get_drvdata(d);
511 struct iwl_priv *priv = shrd->priv;
7d47618a
EG		 512
513 if (!iwl_is_alive(priv))
514 return -EAGAIN;
515
516 return sprintf(buf, "%d\n", priv->temperature);
517}
518
519static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
520
521static ssize_t show_tx_power(struct device *d,
522 struct device_attribute *attr, char *buf)
523{
524 struct iwl_priv *priv = dev_get_drvdata(d);
525
526 if (!iwl_is_ready_rf(priv))
527 return sprintf(buf, "off\n");
528 else
529 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
530}
531
532static ssize_t store_tx_power(struct device *d,
533 struct device_attribute *attr,
534 const char *buf, size_t count)
535{
536 struct iwl_priv *priv = dev_get_drvdata(d);
537 unsigned long val;
538 int ret;
539
540 ret = strict_strtoul(buf, 10, &val);
541 if (ret)
542 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
543 else {
544 ret = iwl_set_tx_power(priv, val, false);
545 if (ret)
546 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
547 ret);
548 else
549 ret = count;
550 }
551 return ret;
552}
553
554static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
555
7d47618a
EG		 556static struct attribute *iwl_sysfs_entries[] = {
557 &dev_attr_temperature.attr,
558 &dev_attr_tx_power.attr,
7d47618a
EG		 559#ifdef CONFIG_IWLWIFI_DEBUG
560 &dev_attr_debug_level.attr,
561#endif
562 NULL
563};
564
565static struct attribute_group iwl_attribute_group = {
566 .name = NULL, /* put in device directory */
567 .attrs = iwl_sysfs_entries,
568};
569
b481de9c
ZY		 570/******************************************************************************
571 *
572 * uCode download functions
573 *
574 ******************************************************************************/
575
3599d39a 576static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
dbf28e21
JB		 577{
578 if (desc->v_addr)
d5934110 579 dma_free_coherent(priv->bus->dev, desc->len,
dbf28e21
JB		 580 desc->v_addr, desc->p_addr);
581 desc->v_addr = NULL;
582 desc->len = 0;
583}
584
3599d39a 585static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
dbf28e21 586{
3599d39a
EG		 587 iwl_free_fw_desc(priv, &img->code);
588 iwl_free_fw_desc(priv, &img->data);
dbf28e21
JB		 589}
590
3599d39a
EG		 591static void iwl_dealloc_ucode(struct iwl_priv *priv)
592{
593 iwl_free_fw_img(priv, &priv->ucode_rt);
594 iwl_free_fw_img(priv, &priv->ucode_init);
c8ac61cf 595 iwl_free_fw_img(priv, &priv->ucode_wowlan);
3599d39a
EG		 596}
597
598static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
dbf28e21
JB		 599 const void *data, size_t len)
600{
601 if (!len) {
602 desc->v_addr = NULL;
603 return -EINVAL;
604 }
605
d5934110 606 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
dbf28e21
JB		 607 &desc->p_addr, GFP_KERNEL);
608 if (!desc->v_addr)
609 return -ENOMEM;
3599d39a 610
dbf28e21
JB		 611 desc->len = len;
612 memcpy(desc->v_addr, data, len);
613 return 0;
614}
615
4d2a5d0e
JB		 616static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
617{
618 static const u8 iwlagn_bss_ac_to_fifo[] = {
619 IWL_TX_FIFO_VO,
620 IWL_TX_FIFO_VI,
621 IWL_TX_FIFO_BE,
622 IWL_TX_FIFO_BK,
623 };
624 static const u8 iwlagn_bss_ac_to_queue[] = {
625 0, 1, 2, 3,
626 };
627 static const u8 iwlagn_pan_ac_to_fifo[] = {
628 IWL_TX_FIFO_VO_IPAN,
629 IWL_TX_FIFO_VI_IPAN,
630 IWL_TX_FIFO_BE_IPAN,
631 IWL_TX_FIFO_BK_IPAN,
632 };
633 static const u8 iwlagn_pan_ac_to_queue[] = {
634 7, 6, 5, 4,
635 };
636 int i;
637
638 /*
639 * The default context is always valid,
640 * the PAN context depends on uCode.
641 */
642 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
643 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
644 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
645
646 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
647 priv->contexts[i].ctxid = i;
648
649 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
650 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
651 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
652 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
653 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
654 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
655 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
656 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
657 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
658 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
659 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
660 BIT(NL80211_IFTYPE_ADHOC);
661 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
662 BIT(NL80211_IFTYPE_STATION);
663 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
664 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
665 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
666 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
667
668 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
669 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
670 REPLY_WIPAN_RXON_TIMING;
671 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
672 REPLY_WIPAN_RXON_ASSOC;
673 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
674 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
675 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
676 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
677 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
678 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
679 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
680 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
681 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
682 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
c6baf7fb
JB		 683
684 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
685 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
686 BIT(NL80211_IFTYPE_P2P_CLIENT) |
687 BIT(NL80211_IFTYPE_P2P_GO);
688
4d2a5d0e
JB		 689 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
690 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
691 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
692
693 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
694}
695
696
dd7a2509
JB		 697struct iwlagn_ucode_capabilities {
698 u32 max_probe_length;
6a822d06 699 u32 standard_phy_calibration_size;
3997ff39 700 u32 flags;
dd7a2509 701};
edcdf8b2 702
b08dfd04 703static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
dd7a2509
JB		 704static int iwl_mac_setup_register(struct iwl_priv *priv,
705 struct iwlagn_ucode_capabilities *capa);
b08dfd04 706
39396085
JS		 707#define UCODE_EXPERIMENTAL_INDEX 100
708#define UCODE_EXPERIMENTAL_TAG "exp"
709
b08dfd04
JB		 710static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
711{
712 const char *name_pre = priv->cfg->fw_name_pre;
39396085 713 char tag[8];
b08dfd04 714
39396085
JS		 715 if (first) {
716#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
717 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
718 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
719 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
720#endif
b08dfd04 721 priv->fw_index = priv->cfg->ucode_api_max;
39396085
JS		 722 sprintf(tag, "%d", priv->fw_index);
723 } else {
b08dfd04 724 priv->fw_index--;
39396085
JS		 725 sprintf(tag, "%d", priv->fw_index);
726 }
b08dfd04
JB		 727
728 if (priv->fw_index < priv->cfg->ucode_api_min) {
729 IWL_ERR(priv, "no suitable firmware found!\n");
730 return -ENOENT;
731 }
732
39396085 733 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
b08dfd04 734
39396085
JS		 735 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
736 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
737 ? "EXPERIMENTAL " : "",
b08dfd04
JB		 738 priv->firmware_name);
739
740 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
d5934110 741 priv->bus->dev,
3599d39a 742 GFP_KERNEL, priv, iwl_ucode_callback);
b08dfd04
JB		 743}
744
0e9a44dc 745struct iwlagn_firmware_pieces {
c8ac61cf
JB		 746 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
747 size_t inst_size, data_size, init_size, init_data_size,
748 wowlan_inst_size, wowlan_data_size;
0e9a44dc
JB		 749
750 u32 build;
b2e640d4
JB		 751
752 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
753 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
0e9a44dc
JB		 754};
755
756static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
757 const struct firmware *ucode_raw,
758 struct iwlagn_firmware_pieces *pieces)
759{
760 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
761 u32 api_ver, hdr_size;
762 const u8 *src;
763
764 priv->ucode_ver = le32_to_cpu(ucode->ver);
765 api_ver = IWL_UCODE_API(priv->ucode_ver);
766
767 switch (api_ver) {
768 default:
f7d046f9
WYG		 769 hdr_size = 28;
770 if (ucode_raw->size < hdr_size) {
771 IWL_ERR(priv, "File size too small!\n");
772 return -EINVAL;
0e9a44dc 773 }
f7d046f9
WYG		 774 pieces->build = le32_to_cpu(ucode->u.v2.build);
775 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
776 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
777 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
778 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
f7d046f9
WYG		 779 src = ucode->u.v2.data;
780 break;
0e9a44dc
JB		 781 case 0:
782 case 1:
783 case 2:
784 hdr_size = 24;
785 if (ucode_raw->size < hdr_size) {
786 IWL_ERR(priv, "File size too small!\n");
787 return -EINVAL;
788 }
789 pieces->build = 0;
790 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
791 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
792 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
793 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
0e9a44dc
JB		 794 src = ucode->u.v1.data;
795 break;
796 }
797
798 /* Verify size of file vs. image size info in file's header */
799 if (ucode_raw->size != hdr_size + pieces->inst_size +
800 pieces->data_size + pieces->init_size +
1fc35276 801 pieces->init_data_size) {
0e9a44dc
JB		 802
803 IWL_ERR(priv,
804 "uCode file size %d does not match expected size\n",
805 (int)ucode_raw->size);
806 return -EINVAL;
807 }
808
809 pieces->inst = src;
810 src += pieces->inst_size;
811 pieces->data = src;
812 src += pieces->data_size;
813 pieces->init = src;
814 src += pieces->init_size;
815 pieces->init_data = src;
816 src += pieces->init_data_size;
0e9a44dc
JB		 817
818 return 0;
819}
820
dd7a2509
JB		 821static int iwlagn_load_firmware(struct iwl_priv *priv,
822 const struct firmware *ucode_raw,
823 struct iwlagn_firmware_pieces *pieces,
824 struct iwlagn_ucode_capabilities *capa)
825{
826 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
827 struct iwl_ucode_tlv *tlv;
828 size_t len = ucode_raw->size;
829 const u8 *data;
48f20d35
EG		 830 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
831 int tmp;
dd7a2509 832 u64 alternatives;
ad8d8333
WYG		 833 u32 tlv_len;
834 enum iwl_ucode_tlv_type tlv_type;
835 const u8 *tlv_data;
dd7a2509 836
ad8d8333
WYG		 837 if (len < sizeof(*ucode)) {
838 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
dd7a2509 839 return -EINVAL;
ad8d8333 840 }
dd7a2509 841
ad8d8333
WYG		 842 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
843 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
844 le32_to_cpu(ucode->magic));
dd7a2509 845 return -EINVAL;
ad8d8333 846 }
dd7a2509
JB		 847
848 /*
849 * Check which alternatives are present, and "downgrade"
850 * when the chosen alternative is not present, warning
851 * the user when that happens. Some files may not have
852 * any alternatives, so don't warn in that case.
853 */
854 alternatives = le64_to_cpu(ucode->alternatives);
855 tmp = wanted_alternative;
856 if (wanted_alternative > 63)
857 wanted_alternative = 63;
858 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
859 wanted_alternative--;
860 if (wanted_alternative && wanted_alternative != tmp)
861 IWL_WARN(priv,
862 "uCode alternative %d not available, choosing %d\n",
863 tmp, wanted_alternative);
864
865 priv->ucode_ver = le32_to_cpu(ucode->ver);
866 pieces->build = le32_to_cpu(ucode->build);
867 data = ucode->data;
868
869 len -= sizeof(*ucode);
870
704da534 871 while (len >= sizeof(*tlv)) {
dd7a2509 872 u16 tlv_alt;
dd7a2509
JB		 873
874 len -= sizeof(*tlv);
875 tlv = (void *)data;
876
877 tlv_len = le32_to_cpu(tlv->length);
878 tlv_type = le16_to_cpu(tlv->type);
879 tlv_alt = le16_to_cpu(tlv->alternative);
880 tlv_data = tlv->data;
881
ad8d8333
WYG		 882 if (len < tlv_len) {
883 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
884 len, tlv_len);
dd7a2509 885 return -EINVAL;
ad8d8333 886 }
dd7a2509
JB		 887 len -= ALIGN(tlv_len, 4);
888 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
889
890 /*
891 * Alternative 0 is always valid.
892 *
893 * Skip alternative TLVs that are not selected.
894 */
895 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
896 continue;
897
898 switch (tlv_type) {
899 case IWL_UCODE_TLV_INST:
900 pieces->inst = tlv_data;
901 pieces->inst_size = tlv_len;
902 break;
903 case IWL_UCODE_TLV_DATA:
904 pieces->data = tlv_data;
905 pieces->data_size = tlv_len;
906 break;
907 case IWL_UCODE_TLV_INIT:
908 pieces->init = tlv_data;
909 pieces->init_size = tlv_len;
910 break;
911 case IWL_UCODE_TLV_INIT_DATA:
912 pieces->init_data = tlv_data;
913 pieces->init_data_size = tlv_len;
914 break;
915 case IWL_UCODE_TLV_BOOT:
1fc35276 916 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
dd7a2509
JB		 917 break;
918 case IWL_UCODE_TLV_PROBE_MAX_LEN:
704da534
JB		 919 if (tlv_len != sizeof(u32))
920 goto invalid_tlv_len;
921 capa->max_probe_length =
ad8d8333 922 le32_to_cpup((__le32 *)tlv_data);
dd7a2509 923 break;
ece9c4ee
JB		 924 case IWL_UCODE_TLV_PAN:
925 if (tlv_len)
926 goto invalid_tlv_len;
3997ff39
JB		 927 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
928 break;
929 case IWL_UCODE_TLV_FLAGS:
930 /* must be at least one u32 */
931 if (tlv_len < sizeof(u32))
932 goto invalid_tlv_len;
933 /* and a proper number of u32s */
934 if (tlv_len % sizeof(u32))
935 goto invalid_tlv_len;
936 /*
937 * This driver only reads the first u32 as
938 * right now no more features are defined,
939 * if that changes then either the driver
940 * will not work with the new firmware, or
941 * it'll not take advantage of new features.
942 */
943 capa->flags = le32_to_cpup((__le32 *)tlv_data);
ece9c4ee 944 break;
b2e640d4 945 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
704da534
JB		 946 if (tlv_len != sizeof(u32))
947 goto invalid_tlv_len;
948 pieces->init_evtlog_ptr =
ad8d8333 949 le32_to_cpup((__le32 *)tlv_data);
b2e640d4
JB		 950 break;
951 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
704da534
JB		 952 if (tlv_len != sizeof(u32))
953 goto invalid_tlv_len;
954 pieces->init_evtlog_size =
ad8d8333 955 le32_to_cpup((__le32 *)tlv_data);
b2e640d4
JB		 956 break;
957 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
704da534
JB		 958 if (tlv_len != sizeof(u32))
959 goto invalid_tlv_len;
960 pieces->init_errlog_ptr =
ad8d8333 961 le32_to_cpup((__le32 *)tlv_data);
b2e640d4
JB		 962 break;
963 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
704da534
JB		 964 if (tlv_len != sizeof(u32))
965 goto invalid_tlv_len;
966 pieces->inst_evtlog_ptr =
ad8d8333 967 le32_to_cpup((__le32 *)tlv_data);
b2e640d4
JB		 968 break;
969 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
704da534
JB		 970 if (tlv_len != sizeof(u32))
971 goto invalid_tlv_len;
972 pieces->inst_evtlog_size =
ad8d8333 973 le32_to_cpup((__le32 *)tlv_data);
b2e640d4
JB		 974 break;
975 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
704da534
JB		 976 if (tlv_len != sizeof(u32))
977 goto invalid_tlv_len;
978 pieces->inst_errlog_ptr =
ad8d8333 979 le32_to_cpup((__le32 *)tlv_data);
b2e640d4 980 break;
c8312fac
WYG		 981 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
982 if (tlv_len)
704da534
JB		 983 goto invalid_tlv_len;
984 priv->enhance_sensitivity_table = true;
c8312fac 985 break;
c8ac61cf
JB		 986 case IWL_UCODE_TLV_WOWLAN_INST:
987 pieces->wowlan_inst = tlv_data;
988 pieces->wowlan_inst_size = tlv_len;
989 break;
990 case IWL_UCODE_TLV_WOWLAN_DATA:
991 pieces->wowlan_data = tlv_data;
992 pieces->wowlan_data_size = tlv_len;
993 break;
6a822d06 994 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
704da534
JB		 995 if (tlv_len != sizeof(u32))
996 goto invalid_tlv_len;
997 capa->standard_phy_calibration_size =
6a822d06
WYG		 998 le32_to_cpup((__le32 *)tlv_data);
999 break;
dd7a2509 1000 default:
6fc3ba99 1001 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
dd7a2509
JB		 1002 break;
1003 }
1004 }
1005
ad8d8333
WYG		 1006 if (len) {
1007 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1008 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
704da534 1009 return -EINVAL;
ad8d8333 1010 }
dd7a2509 1011
704da534
JB		 1012 return 0;
1013
1014 invalid_tlv_len:
1015 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1016 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1017
1018 return -EINVAL;
dd7a2509
JB		 1019}
1020
b481de9c 1021/**
b08dfd04 1022 * iwl_ucode_callback - callback when firmware was loaded
b481de9c 1023 *
b08dfd04
JB		 1024 * If loaded successfully, copies the firmware into buffers
1025 * for the card to fetch (via DMA).
b481de9c 1026 */
b08dfd04 1027static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
b481de9c 1028{
b08dfd04 1029 struct iwl_priv *priv = context;
cc0f555d 1030 struct iwl_ucode_header *ucode;
0e9a44dc
JB		 1031 int err;
1032 struct iwlagn_firmware_pieces pieces;
a0987a8d 1033 const unsigned int api_max = priv->cfg->ucode_api_max;
5d7969bf 1034 unsigned int api_ok = priv->cfg->ucode_api_ok;
a0987a8d 1035 const unsigned int api_min = priv->cfg->ucode_api_min;
0e9a44dc 1036 u32 api_ver;
3e4de761 1037 char buildstr[25];
0e9a44dc 1038 u32 build;
dd7a2509
JB		 1039 struct iwlagn_ucode_capabilities ucode_capa = {
1040 .max_probe_length = 200,
6a822d06 1041 .standard_phy_calibration_size =
642454cc 1042 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
dd7a2509 1043 };
0e9a44dc 1044
5d7969bf
JB		 1045 if (!api_ok)
1046 api_ok = api_max;
1047
0e9a44dc 1048 memset(&pieces, 0, sizeof(pieces));
b481de9c 1049
b08dfd04 1050 if (!ucode_raw) {
5d7969bf 1051 if (priv->fw_index <= api_ok)
39396085
JS		 1052 IWL_ERR(priv,
1053 "request for firmware file '%s' failed.\n",
1054 priv->firmware_name);
b08dfd04 1055 goto try_again;
b481de9c
ZY		 1056 }
1057
b08dfd04
JB		 1058 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1059 priv->firmware_name, ucode_raw->size);
b481de9c 1060
22adba2a
JB		 1061 /* Make sure that we got at least the API version number */
1062 if (ucode_raw->size < 4) {
15b1687c 1063 IWL_ERR(priv, "File size way too small!\n");
b08dfd04 1064 goto try_again;
b481de9c
ZY		 1065 }
1066
1067 /* Data from ucode file: header followed by uCode images */
cc0f555d 1068 ucode = (struct iwl_ucode_header *)ucode_raw->data;
b481de9c 1069
0e9a44dc
JB		 1070 if (ucode->ver)
1071 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1072 else
dd7a2509
JB		 1073 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1074 &ucode_capa);
22adba2a 1075
0e9a44dc
JB		 1076 if (err)
1077 goto try_again;
b481de9c 1078
a0987a8d 1079 api_ver = IWL_UCODE_API(priv->ucode_ver);
0e9a44dc 1080 build = pieces.build;
a0987a8d 1081
0e9a44dc
JB		 1082 /*
1083 * api_ver should match the api version forming part of the
1084 * firmware filename ... but we don't check for that and only rely
1085 * on the API version read from firmware header from here on forward
1086 */
65cccfb0
WYG		 1087 /* no api version check required for experimental uCode */
1088 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1089 if (api_ver < api_min || api_ver > api_max) {
1090 IWL_ERR(priv,
1091 "Driver unable to support your firmware API. "
1092 "Driver supports v%u, firmware is v%u.\n",
1093 api_max, api_ver);
1094 goto try_again;
1095 }
b08dfd04 1096
5d7969bf
JB		 1097 if (api_ver < api_ok) {
1098 if (api_ok != api_max)
1099 IWL_ERR(priv, "Firmware has old API version, "
1100 "expected v%u through v%u, got v%u.\n",
1101 api_ok, api_max, api_ver);
1102 else
1103 IWL_ERR(priv, "Firmware has old API version, "
1104 "expected v%u, got v%u.\n",
1105 api_max, api_ver);
1106 IWL_ERR(priv, "New firmware can be obtained from "
1107 "http://www.intellinuxwireless.org/.\n");
1108 }
65cccfb0 1109 }
a0987a8d 1110
3e4de761 1111 if (build)
39396085
JS		 1112 sprintf(buildstr, " build %u%s", build,
1113 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1114 ? " (EXP)" : "");
3e4de761
JB		 1115 else
1116 buildstr[0] = '\0';
1117
1118 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1119 IWL_UCODE_MAJOR(priv->ucode_ver),
1120 IWL_UCODE_MINOR(priv->ucode_ver),
1121 IWL_UCODE_API(priv->ucode_ver),
1122 IWL_UCODE_SERIAL(priv->ucode_ver),
1123 buildstr);
a0987a8d 1124
5ebeb5a6
RC		 1125 snprintf(priv->hw->wiphy->fw_version,
1126 sizeof(priv->hw->wiphy->fw_version),
3e4de761 1127 "%u.%u.%u.%u%s",
5ebeb5a6
RC		 1128 IWL_UCODE_MAJOR(priv->ucode_ver),
1129 IWL_UCODE_MINOR(priv->ucode_ver),
1130 IWL_UCODE_API(priv->ucode_ver),
3e4de761
JB		 1131 IWL_UCODE_SERIAL(priv->ucode_ver),
1132 buildstr);
b481de9c 1133
b08dfd04
JB		 1134 /*
1135 * For any of the failures below (before allocating pci memory)
1136 * we will try to load a version with a smaller API -- maybe the
1137 * user just got a corrupted version of the latest API.
1138 */
1139
0e9a44dc
JB		 1140 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1141 priv->ucode_ver);
1142 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1143 pieces.inst_size);
1144 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1145 pieces.data_size);
1146 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1147 pieces.init_size);
1148 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1149 pieces.init_data_size);
b481de9c
ZY		 1150
1151 /* Verify that uCode images will fit in card's SRAM */
d6189124 1152 if (pieces.inst_size > hw_params(priv).max_inst_size) {
0e9a44dc
JB		 1153 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1154 pieces.inst_size);
b08dfd04 1155 goto try_again;
b481de9c
ZY		 1156 }
1157
d6189124 1158 if (pieces.data_size > hw_params(priv).max_data_size) {
0e9a44dc
JB		 1159 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1160 pieces.data_size);
b08dfd04 1161 goto try_again;
b481de9c 1162 }
0e9a44dc 1163
d6189124 1164 if (pieces.init_size > hw_params(priv).max_inst_size) {
0e9a44dc
JB		 1165 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1166 pieces.init_size);
b08dfd04 1167 goto try_again;
b481de9c 1168 }
0e9a44dc 1169
d6189124 1170 if (pieces.init_data_size > hw_params(priv).max_data_size) {
0e9a44dc
JB		 1171 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1172 pieces.init_data_size);
b08dfd04 1173 goto try_again;
b481de9c 1174 }
0e9a44dc 1175
b481de9c
ZY		 1176 /* Allocate ucode buffers for card's bus-master loading ... */
1177
1178 /* Runtime instructions and 2 copies of data:
1179 * 1) unmodified from disk
1180 * 2) backup cache for save/restore during power-downs */
3599d39a 1181 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
dbf28e21
JB		 1182 pieces.inst, pieces.inst_size))
1183 goto err_pci_alloc;
3599d39a 1184 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
dbf28e21 1185 pieces.data, pieces.data_size))
1f304e4e
ZY		 1186 goto err_pci_alloc;
1187
b481de9c 1188 /* Initialization instructions and data */
0e9a44dc 1189 if (pieces.init_size && pieces.init_data_size) {
3599d39a 1190 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
dbf28e21
JB		 1191 pieces.init, pieces.init_size))
1192 goto err_pci_alloc;
3599d39a 1193 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
dbf28e21 1194 pieces.init_data, pieces.init_data_size))
90e759d1
TW		 1195 goto err_pci_alloc;
1196 }
b481de9c 1197
c8ac61cf
JB		 1198 /* WoWLAN instructions and data */
1199 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1200 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1201 pieces.wowlan_inst,
1202 pieces.wowlan_inst_size))
1203 goto err_pci_alloc;
1204 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1205 pieces.wowlan_data,
1206 pieces.wowlan_data_size))
1207 goto err_pci_alloc;
1208 }
1209
b2e640d4
JB		 1210 /* Now that we can no longer fail, copy information */
1211
1212 /*
1213 * The (size - 16) / 12 formula is based on the information recorded
1214 * for each event, which is of mode 1 (including timestamp) for all
1215 * new microcodes that include this information.
1216 */
898ed67b 1217 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
b2e640d4 1218 if (pieces.init_evtlog_size)
898ed67b 1219 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
b2e640d4 1220 else
898ed67b 1221 priv->init_evtlog_size =
7cb1b088 1222 priv->cfg->base_params->max_event_log_size;
898ed67b
WYG		 1223 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1224 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
b2e640d4 1225 if (pieces.inst_evtlog_size)
898ed67b 1226 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
b2e640d4 1227 else
898ed67b 1228 priv->inst_evtlog_size =
7cb1b088 1229 priv->cfg->base_params->max_event_log_size;
898ed67b 1230 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
b2e640d4 1231
d2690c0d
JB		 1232 priv->new_scan_threshold_behaviour =
1233 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1234
4d2a5d0e
JB		 1235 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1236 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
c10afb6e 1237
c6baf7fb
JB		 1238 /*
1239 * if not PAN, then don't support P2P -- might be a uCode
1240 * packaging bug or due to the eeprom check above
1241 */
1242 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1243 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1244
4d2a5d0e
JB		 1245 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1246 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
cefeaa5f 1247 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
4d2a5d0e
JB		 1248 } else {
1249 priv->sta_key_max_num = STA_KEY_MAX_NUM;
cefeaa5f 1250 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
4d2a5d0e 1251 }
17445b8c 1252
6a822d06
WYG		 1253 /*
1254 * figure out the offset of chain noise reset and gain commands
1255 * base on the size of standard phy calibration commands table size
1256 */
1257 if (ucode_capa.standard_phy_calibration_size >
1258 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1259 ucode_capa.standard_phy_calibration_size =
1260 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1261
898ed67b 1262 priv->phy_calib_chain_noise_reset_cmd =
6a822d06 1263 ucode_capa.standard_phy_calibration_size;
898ed67b 1264 priv->phy_calib_chain_noise_gain_cmd =
6a822d06
WYG		 1265 ucode_capa.standard_phy_calibration_size + 1;
1266
4d2a5d0e
JB		 1267 /* initialize all valid contexts */
1268 iwl_init_context(priv, ucode_capa.flags);
1269
b08dfd04
JB		 1270 /**************************************************
1271 * This is still part of probe() in a sense...
1272 *
1273 * 9. Setup and register with mac80211 and debugfs
1274 **************************************************/
dd7a2509 1275 err = iwl_mac_setup_register(priv, &ucode_capa);
b08dfd04
JB		 1276 if (err)
1277 goto out_unbind;
1278
1279 err = iwl_dbgfs_register(priv, DRV_NAME);
1280 if (err)
1281 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1282
d5934110 1283 err = sysfs_create_group(&(priv->bus->dev->kobj),
7d47618a
EG		 1284 &iwl_attribute_group);
1285 if (err) {
1286 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1287 goto out_unbind;
1288 }
1289
b481de9c
ZY		 1290 /* We have our copies now, allow OS release its copies */
1291 release_firmware(ucode_raw);
898ed67b 1292 complete(&priv->firmware_loading_complete);
b08dfd04
JB		 1293 return;
1294
1295 try_again:
1296 /* try next, if any */
1297 if (iwl_request_firmware(priv, false))
1298 goto out_unbind;
1299 release_firmware(ucode_raw);
1300 return;
b481de9c
ZY		 1301
1302 err_pci_alloc:
15b1687c 1303 IWL_ERR(priv, "failed to allocate pci memory\n");
3599d39a 1304 iwl_dealloc_ucode(priv);
b08dfd04 1305 out_unbind:
898ed67b 1306 complete(&priv->firmware_loading_complete);
d5934110 1307 device_release_driver(priv->bus->dev);
b481de9c 1308 release_firmware(ucode_raw);
b481de9c
ZY		 1309}
1310
2a897d41 1311static const char * const desc_lookup_text[] = {
b7a79404
RC		 1312 "OK",
1313 "FAIL",
1314 "BAD_PARAM",
1315 "BAD_CHECKSUM",
1316 "NMI_INTERRUPT_WDG",
1317 "SYSASSERT",
1318 "FATAL_ERROR",
1319 "BAD_COMMAND",
1320 "HW_ERROR_TUNE_LOCK",
1321 "HW_ERROR_TEMPERATURE",
1322 "ILLEGAL_CHAN_FREQ",
1323 "VCC_NOT_STABLE",
1324 "FH_ERROR",
1325 "NMI_INTERRUPT_HOST",
1326 "NMI_INTERRUPT_ACTION_PT",
1327 "NMI_INTERRUPT_UNKNOWN",
1328 "UCODE_VERSION_MISMATCH",
1329 "HW_ERROR_ABS_LOCK",
1330 "HW_ERROR_CAL_LOCK_FAIL",
1331 "NMI_INTERRUPT_INST_ACTION_PT",
1332 "NMI_INTERRUPT_DATA_ACTION_PT",
1333 "NMI_TRM_HW_ER",
1334 "NMI_INTERRUPT_TRM",
2a897d41 1335 "NMI_INTERRUPT_BREAK_POINT",
b7a79404
RC		 1336 "DEBUG_0",
1337 "DEBUG_1",
1338 "DEBUG_2",
1339 "DEBUG_3",
b7a79404
RC		 1340};
1341
4b58645c
JS		 1342static struct { char *name; u8 num; } advanced_lookup[] = {
1343 { "NMI_INTERRUPT_WDG", 0x34 },
1344 { "SYSASSERT", 0x35 },
1345 { "UCODE_VERSION_MISMATCH", 0x37 },
1346 { "BAD_COMMAND", 0x38 },
1347 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1348 { "FATAL_ERROR", 0x3D },
1349 { "NMI_TRM_HW_ERR", 0x46 },
1350 { "NMI_INTERRUPT_TRM", 0x4C },
1351 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1352 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1353 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1354 { "NMI_INTERRUPT_HOST", 0x66 },
1355 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1356 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1357 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1358 { "ADVANCED_SYSASSERT", 0 },
1359};
1360
1361static const char *desc_lookup(u32 num)
b7a79404 1362{
4b58645c
JS		 1363 int i;
1364 int max = ARRAY_SIZE(desc_lookup_text);
b7a79404 1365
4b58645c
JS		 1366 if (num < max)
1367 return desc_lookup_text[num];
b7a79404 1368
4b58645c
JS		 1369 max = ARRAY_SIZE(advanced_lookup) - 1;
1370 for (i = 0; i < max; i++) {
1371 if (advanced_lookup[i].num == num)
6eab04a8 1372 break;
4b58645c
JS		 1373 }
1374 return advanced_lookup[i].name;
b7a79404
RC		 1375}
1376
1377#define ERROR_START_OFFSET (1 * sizeof(u32))
1378#define ERROR_ELEM_SIZE (7 * sizeof(u32))
1379
1380void iwl_dump_nic_error_log(struct iwl_priv *priv)
1381{
50650547 1382 u32 base;
e46f6538 1383 struct iwl_error_event_table table;
b7a79404 1384
d7d5783c 1385 base = priv->device_pointers.error_event_table;
872907bb 1386 if (priv->ucode_type == IWL_UCODE_INIT) {
b2e640d4 1387 if (!base)
898ed67b 1388 base = priv->init_errlog_ptr;
b2e640d4 1389 } else {
b2e640d4 1390 if (!base)
898ed67b 1391 base = priv->inst_errlog_ptr;
b2e640d4 1392 }
b7a79404 1393
4caab328 1394 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
212fb575
WYG		 1395 IWL_ERR(priv,
1396 "Not valid error log pointer 0x%08X for %s uCode\n",
ca7966c8 1397 base,
872907bb 1398 (priv->ucode_type == IWL_UCODE_INIT)
ca7966c8 1399 ? "Init" : "RT");
b7a79404
RC		 1400 return;
1401 }
1402
e46f6538
JB		 1403 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1404
50650547 1405 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
b7a79404
RC		 1406 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1407 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
63013ae3 1408 priv->shrd->status, table.valid);
b7a79404
RC		 1409 }
1410
50650547
WYG		 1411 priv->isr_stats.err_code = table.error_id;
1412
1413 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1414 table.data1, table.data2, table.line,
1415 table.blink1, table.blink2, table.ilink1,
1416 table.ilink2, table.bcon_time, table.gp1,
1417 table.gp2, table.gp3, table.ucode_ver,
1418 table.hw_ver, table.brd_ver);
1419 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1420 desc_lookup(table.error_id));
1421 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1422 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1423 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1424 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1425 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1426 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1427 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1428 IWL_ERR(priv, "0x%08X | line\n", table.line);
1429 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1430 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1431 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1432 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1433 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1434 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1435 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1436 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1437 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1438 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
b7a79404
RC		 1439}
1440
1441#define EVENT_START_OFFSET (4 * sizeof(u32))
1442
1443/**
1444 * iwl_print_event_log - Dump error event log to syslog
1445 *
1446 */
b03d7d0f
WYG		 1447static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1448 u32 num_events, u32 mode,
1449 int pos, char **buf, size_t bufsz)
b7a79404
RC		 1450{
1451 u32 i;
1452 u32 base; /* SRAM byte address of event log header */
1453 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1454 u32 ptr; /* SRAM byte address of log data */
1455 u32 ev, time, data; /* event log data */
e5854471 1456 unsigned long reg_flags;
b7a79404
RC		 1457
1458 if (num_events == 0)
b03d7d0f 1459 return pos;
b2e640d4 1460
d7d5783c 1461 base = priv->device_pointers.log_event_table;
872907bb 1462 if (priv->ucode_type == IWL_UCODE_INIT) {
b2e640d4 1463 if (!base)
898ed67b 1464 base = priv->init_evtlog_ptr;
b2e640d4 1465 } else {
b2e640d4 1466 if (!base)
898ed67b 1467 base = priv->inst_evtlog_ptr;
b2e640d4 1468 }
b7a79404
RC		 1469
1470 if (mode == 0)
1471 event_size = 2 * sizeof(u32);
1472 else
1473 event_size = 3 * sizeof(u32);
1474
1475 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1476
e5854471
BC		 1477 /* Make sure device is powered up for SRAM reads */
1478 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1479 iwl_grab_nic_access(priv);
1480
1481 /* Set starting address; reads will auto-increment */
02a7fa00 1482 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
e5854471
BC		 1483 rmb();
1484
b7a79404
RC		 1485 /* "time" is actually "data" for mode 0 (no timestamp).
1486 * place event id # at far right for easier visual parsing. */
1487 for (i = 0; i < num_events; i++) {
02a7fa00
JB		 1488 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1489 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
b7a79404
RC		 1490 if (mode == 0) {
1491 /* data, ev */
b03d7d0f
WYG		 1492 if (bufsz) {
1493 pos += scnprintf(*buf + pos, bufsz - pos,
1494 "EVT_LOG:0x%08x:%04u\n",
1495 time, ev);
1496 } else {
1497 trace_iwlwifi_dev_ucode_event(priv, 0,
1498 time, ev);
1499 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1500 time, ev);
1501 }
b7a79404 1502 } else {
02a7fa00 1503 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
b03d7d0f
WYG		 1504 if (bufsz) {
1505 pos += scnprintf(*buf + pos, bufsz - pos,
1506 "EVT_LOGT:%010u:0x%08x:%04u\n",
1507 time, data, ev);
1508 } else {
1509 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
b7a79404 1510 time, data, ev);
b03d7d0f
WYG		 1511 trace_iwlwifi_dev_ucode_event(priv, time,
1512 data, ev);
1513 }
b7a79404
RC		 1514 }
1515 }
e5854471
BC		 1516
1517 /* Allow device to power down */
1518 iwl_release_nic_access(priv);
1519 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
b03d7d0f 1520 return pos;
b7a79404
RC		 1521}
1522
c341ddb2
WYG		 1523/**
1524 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1525 */
b03d7d0f
WYG		 1526static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1527 u32 num_wraps, u32 next_entry,
1528 u32 size, u32 mode,
1529 int pos, char **buf, size_t bufsz)
c341ddb2
WYG		 1530{
1531 /*
1532 * display the newest DEFAULT_LOG_ENTRIES entries
1533 * i.e the entries just before the next ont that uCode would fill.
1534 */
1535 if (num_wraps) {
1536 if (next_entry < size) {
b03d7d0f
WYG		 1537 pos = iwl_print_event_log(priv,
1538 capacity - (size - next_entry),
1539 size - next_entry, mode,
1540 pos, buf, bufsz);
1541 pos = iwl_print_event_log(priv, 0,
1542 next_entry, mode,
1543 pos, buf, bufsz);
c341ddb2 1544 } else
b03d7d0f
WYG		 1545 pos = iwl_print_event_log(priv, next_entry - size,
1546 size, mode, pos, buf, bufsz);
c341ddb2 1547 } else {
b03d7d0f
WYG		 1548 if (next_entry < size) {
1549 pos = iwl_print_event_log(priv, 0, next_entry,
1550 mode, pos, buf, bufsz);
1551 } else {
1552 pos = iwl_print_event_log(priv, next_entry - size,
1553 size, mode, pos, buf, bufsz);
1554 }
c341ddb2 1555 }
b03d7d0f 1556 return pos;
c341ddb2
WYG		 1557}
1558
c341ddb2
WYG		 1559#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1560
b03d7d0f
WYG		 1561int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1562 char **buf, bool display)
b7a79404
RC		 1563{
1564 u32 base; /* SRAM byte address of event log header */
1565 u32 capacity; /* event log capacity in # entries */
1566 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1567 u32 num_wraps; /* # times uCode wrapped to top of log */
1568 u32 next_entry; /* index of next entry to be written by uCode */
1569 u32 size; /* # entries that we'll print */
b2e640d4 1570 u32 logsize;
b03d7d0f
WYG		 1571 int pos = 0;
1572 size_t bufsz = 0;
b7a79404 1573
d7d5783c 1574 base = priv->device_pointers.log_event_table;
872907bb 1575 if (priv->ucode_type == IWL_UCODE_INIT) {
898ed67b 1576 logsize = priv->init_evtlog_size;
b2e640d4 1577 if (!base)
898ed67b 1578 base = priv->init_evtlog_ptr;
b2e640d4 1579 } else {
898ed67b 1580 logsize = priv->inst_evtlog_size;
b2e640d4 1581 if (!base)
898ed67b 1582 base = priv->inst_evtlog_ptr;
b2e640d4 1583 }
b7a79404 1584
4caab328 1585 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
212fb575
WYG		 1586 IWL_ERR(priv,
1587 "Invalid event log pointer 0x%08X for %s uCode\n",
ca7966c8 1588 base,
872907bb 1589 (priv->ucode_type == IWL_UCODE_INIT)
ca7966c8 1590 ? "Init" : "RT");
937c397e 1591 return -EINVAL;
b7a79404
RC		 1592 }
1593
1594 /* event log header */
1595 capacity = iwl_read_targ_mem(priv, base);
1596 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1597 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1598 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1599
b2e640d4 1600 if (capacity > logsize) {
84c40692 1601 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
b2e640d4
JB		 1602 capacity, logsize);
1603 capacity = logsize;
84c40692
BC		 1604 }
1605
b2e640d4 1606 if (next_entry > logsize) {
84c40692 1607 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
b2e640d4
JB		 1608 next_entry, logsize);
1609 next_entry = logsize;
84c40692
BC		 1610 }
1611
b7a79404
RC		 1612 size = num_wraps ? capacity : next_entry;
1613
1614 /* bail out if nothing in log */
1615 if (size == 0) {
1616 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
b03d7d0f 1617 return pos;
b7a79404
RC		 1618 }
1619
9f28ebc3 1620 /* enable/disable bt channel inhibition */
48f20d35 1621 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
f37837c9 1622
c341ddb2 1623#ifdef CONFIG_IWLWIFI_DEBUG
8f470ce3 1624 if (!(iwl_get_debug_level(priv->shrd) & IWL_DL_FW_ERRORS) && !full_log)
c341ddb2
WYG		 1625 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1626 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1627#else
1628 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1629 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1630#endif
1631 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1632 size);
b7a79404 1633
c341ddb2 1634#ifdef CONFIG_IWLWIFI_DEBUG
b03d7d0f
WYG		 1635 if (display) {
1636 if (full_log)
1637 bufsz = capacity * 48;
1638 else
1639 bufsz = size * 48;
1640 *buf = kmalloc(bufsz, GFP_KERNEL);
1641 if (!*buf)
937c397e 1642 return -ENOMEM;
b03d7d0f 1643 }
8f470ce3 1644 if ((iwl_get_debug_level(priv->shrd) & IWL_DL_FW_ERRORS) || full_log) {
c341ddb2
WYG		 1645 /*
1646 * if uCode has wrapped back to top of log,
1647 * start at the oldest entry,
1648 * i.e the next one that uCode would fill.
1649 */
1650 if (num_wraps)
b03d7d0f
WYG		 1651 pos = iwl_print_event_log(priv, next_entry,
1652 capacity - next_entry, mode,
1653 pos, buf, bufsz);
c341ddb2 1654 /* (then/else) start at top of log */
b03d7d0f
WYG		 1655 pos = iwl_print_event_log(priv, 0,
1656 next_entry, mode, pos, buf, bufsz);
c341ddb2 1657 } else
b03d7d0f
WYG		 1658 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1659 next_entry, size, mode,
1660 pos, buf, bufsz);
c341ddb2 1661#else
b03d7d0f
WYG		 1662 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1663 next_entry, size, mode,
1664 pos, buf, bufsz);
b7a79404 1665#endif
b03d7d0f 1666 return pos;
c341ddb2 1667}
b7a79404 1668
0975cc8f
WYG		 1669static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1670{
1671 struct iwl_ct_kill_config cmd;
1672 struct iwl_ct_kill_throttling_config adv_cmd;
1673 unsigned long flags;
1674 int ret = 0;
1675
10b15e6f 1676 spin_lock_irqsave(&priv->shrd->lock, flags);
0975cc8f
WYG		 1677 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1678 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
10b15e6f 1679 spin_unlock_irqrestore(&priv->shrd->lock, flags);
0975cc8f
WYG		 1680 priv->thermal_throttle.ct_kill_toggle = false;
1681
7cb1b088 1682 if (priv->cfg->base_params->support_ct_kill_exit) {
0975cc8f 1683 adv_cmd.critical_temperature_enter =
d6189124 1684 cpu_to_le32(hw_params(priv).ct_kill_threshold);
0975cc8f 1685 adv_cmd.critical_temperature_exit =
d6189124 1686 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
0975cc8f 1687
e6bb4c9c 1688 ret = iwl_trans_send_cmd_pdu(trans(priv),
e419d62d
EG		 1689 REPLY_CT_KILL_CONFIG_CMD,
1690 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
0975cc8f
WYG		 1691 if (ret)
1692 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1693 else
1694 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
d6189124
EG		 1695 "succeeded, critical temperature enter is %d,"
1696 "exit is %d\n",
1697 hw_params(priv).ct_kill_threshold,
1698 hw_params(priv).ct_kill_exit_threshold);
0975cc8f
WYG		 1699 } else {
1700 cmd.critical_temperature_R =
d6189124 1701 cpu_to_le32(hw_params(priv).ct_kill_threshold);
0975cc8f 1702
e6bb4c9c 1703 ret = iwl_trans_send_cmd_pdu(trans(priv),
e419d62d
EG		 1704 REPLY_CT_KILL_CONFIG_CMD,
1705 CMD_SYNC, sizeof(cmd), &cmd);
0975cc8f
WYG		 1706 if (ret)
1707 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1708 else
1709 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
d6189124
EG		 1710 "succeeded, "
1711 "critical temperature is %d\n",
1712 hw_params(priv).ct_kill_threshold);
0975cc8f
WYG		 1713 }
1714}
1715
6d6a1afd
SZ		 1716static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1717{
1718 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1719 struct iwl_host_cmd cmd = {
1720 .id = CALIBRATION_CFG_CMD,
3fa50738
JB		 1721 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1722 .data = { &calib_cfg_cmd, },
6d6a1afd
SZ		 1723 };
1724
1725 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1726 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
7cb1b088 1727 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
6d6a1afd 1728
e6bb4c9c 1729 return iwl_trans_send_cmd(trans(priv), &cmd);
6d6a1afd
SZ		 1730}
1731
1732
e505c433
WYG		 1733static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1734{
1735 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1736 .valid = cpu_to_le32(valid_tx_ant),
1737 };
1738
1739 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1740 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
e6bb4c9c 1741 return iwl_trans_send_cmd_pdu(trans(priv),
e505c433
WYG		 1742 TX_ANT_CONFIGURATION_CMD,
1743 CMD_SYNC,
1744 sizeof(struct iwl_tx_ant_config_cmd),
1745 &tx_ant_cmd);
1746 } else {
1747 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1748 return -EOPNOTSUPP;
1749 }
1750}
1751
b481de9c 1752/**
4a4a9e81 1753 * iwl_alive_start - called after REPLY_ALIVE notification received
b481de9c 1754 * from protocol/runtime uCode (initialization uCode's
4a4a9e81 1755 * Alive gets handled by iwl_init_alive_start()).
b481de9c 1756 */
4613e72d 1757int iwl_alive_start(struct iwl_priv *priv)
b481de9c 1758{
57aab75a 1759 int ret = 0;
246ed355 1760 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
b481de9c 1761
1a361cd8 1762 /*TODO: this should go to the transport layer */
ca7966c8 1763 iwl_reset_ict(priv);
b481de9c 1764
ca7966c8 1765 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
6d6a1afd 1766
5b9f8cd3 1767 /* After the ALIVE response, we can send host commands to the uCode */
63013ae3 1768 set_bit(STATUS_ALIVE, &priv->shrd->status);
b481de9c 1769
22de94de
SG		 1770 /* Enable watchdog to monitor the driver tx queues */
1771 iwl_setup_watchdog(priv);
b74e31a9 1772
fee1247a 1773 if (iwl_is_rfkill(priv))
ca7966c8 1774 return -ERFKILL;
b481de9c 1775
bc795df1 1776 /* download priority table before any calibration request */
7cb1b088
WYG		 1777 if (priv->cfg->bt_params &&
1778 priv->cfg->bt_params->advanced_bt_coexist) {
f7322f8f 1779 /* Configure Bluetooth device coexistence support */
207ecc5e
MV		 1780 if (priv->cfg->bt_params->bt_sco_disable)
1781 priv->bt_enable_pspoll = false;
1782 else
1783 priv->bt_enable_pspoll = true;
1784
f7322f8f
WYG		 1785 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1786 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1787 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
e55b517c 1788 iwlagn_send_advance_bt_config(priv);
f7322f8f 1789 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
207ecc5e
MV		 1790 priv->cur_rssi_ctx = NULL;
1791
a5901cbb 1792 iwlagn_send_prio_tbl(priv);
f7322f8f
WYG		 1793
1794 /* FIXME: w/a to force change uCode BT state machine */
ca7966c8
JB		 1795 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1796 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1797 if (ret)
1798 return ret;
1799 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1800 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1801 if (ret)
1802 return ret;
e55b517c
WYG		 1803 } else {
1804 /*
1805 * default is 2-wire BT coexexistence support
1806 */
1807 iwl_send_bt_config(priv);
f7322f8f 1808 }
e55b517c 1809
d6189124
EG		 1810 if (hw_params(priv).calib_rt_cfg)
1811 iwlagn_send_calib_cfg_rt(priv,
1812 hw_params(priv).calib_rt_cfg);
bc795df1 1813
36d6825b 1814 ieee80211_wake_queues(priv->hw);
b481de9c 1815
470ab2dd 1816 priv->active_rate = IWL_RATES_MASK;
b481de9c 1817
2f748dec 1818 /* Configure Tx antenna selection based on H/W config */
e3f10cea 1819 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
2f748dec 1820
c8ac61cf 1821 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
c1adf9fb 1822 struct iwl_rxon_cmd *active_rxon =
246ed355 1823 (struct iwl_rxon_cmd *)&ctx->active;
019fb97d 1824 /* apply any changes in staging */
246ed355 1825 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
b481de9c
ZY		 1826 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1827 } else {
d0fe478c 1828 struct iwl_rxon_context *tmp;
b481de9c 1829 /* Initialize our rx_config data */
d0fe478c
JB		 1830 for_each_context(priv, tmp)
1831 iwl_connection_init_rx_config(priv, tmp);
45823531 1832
e3f10cea 1833 iwlagn_set_rxon_chain(priv, ctx);
b481de9c
ZY		 1834 }
1835
c8ac61cf
JB		 1836 if (!priv->wowlan) {
1837 /* WoWLAN ucode will not reply in the same way, skip it */
1838 iwl_reset_run_time_calib(priv);
1839 }
4a4a9e81 1840
63013ae3 1841 set_bit(STATUS_READY, &priv->shrd->status);
9e2e7422 1842
b481de9c 1843 /* Configure the adapter for unassociated operation */
805a3b81 1844 ret = iwlagn_commit_rxon(priv, ctx);
ca7966c8
JB		 1845 if (ret)
1846 return ret;
b481de9c
ZY		 1847
1848 /* At this point, the NIC is initialized and operational */
47f4a587 1849 iwl_rf_kill_ct_config(priv);
5a66926a 1850
e1623446 1851 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
c46fbefa 1852
ca7966c8 1853 return iwl_power_update_mode(priv, true);
b481de9c
ZY		 1854}
1855
4e39317d 1856static void iwl_cancel_deferred_work(struct iwl_priv *priv);
b481de9c 1857
5b9f8cd3 1858static void __iwl_down(struct iwl_priv *priv)
b481de9c 1859{
22dd2fd2 1860 int exit_pending;
b481de9c 1861
e1623446 1862 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
b481de9c 1863
d745d472
SG		 1864 iwl_scan_cancel_timeout(priv, 200);
1865
c6baf7fb
JB		 1866 /*
1867 * If active, scanning won't cancel it, so say it expired.
1868 * No race since we hold the mutex here and a new one
1869 * can't come in at this time.
1870 */
1871 ieee80211_remain_on_channel_expired(priv->hw);
1872
63013ae3
EG		 1873 exit_pending =
1874 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
b481de9c 1875
b62177a0
SG		 1876 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1877 * to prevent rearm timer */
22de94de 1878 del_timer_sync(&priv->watchdog);
b62177a0 1879
dcef732c 1880 iwl_clear_ucode_stations(priv, NULL);
a194e324 1881 iwl_dealloc_bcast_stations(priv);
db125c78 1882 iwl_clear_driver_stations(priv);
b481de9c 1883
a1174138 1884 /* reset BT coex data */
da5dbb97 1885 priv->bt_status = 0;
207ecc5e
MV		 1886 priv->cur_rssi_ctx = NULL;
1887 priv->bt_is_sco = 0;
7cb1b088
WYG		 1888 if (priv->cfg->bt_params)
1889 priv->bt_traffic_load =
1890 priv->cfg->bt_params->bt_init_traffic_load;
1891 else
1892 priv->bt_traffic_load = 0;
bee008b7
WYG		 1893 priv->bt_full_concurrent = false;
1894 priv->bt_ci_compliance = 0;
a1174138 1895
b481de9c
ZY		 1896 /* Wipe out the EXIT_PENDING status bit if we are not actually
1897 * exiting the module */
1898 if (!exit_pending)
63013ae3 1899 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
b481de9c 1900
b481de9c
ZY		 1901 if (priv->mac80211_registered)
1902 ieee80211_stop_queues(priv->hw);
1903
1a10f433 1904 /* Clear out all status bits but a few that are stable across reset */
63013ae3
EG		 1905 priv->shrd->status &=
1906 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
b481de9c 1907 STATUS_RF_KILL_HW |
63013ae3 1908 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
9788864e 1909 STATUS_GEO_CONFIGURED |
63013ae3 1910 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
052ec3f1 1911 STATUS_FW_ERROR |
63013ae3 1912 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
052ec3f1 1913 STATUS_EXIT_PENDING;
b481de9c 1914
e6bb4c9c 1915 iwl_trans_stop_device(trans(priv));
4d2ccdb9 1916
77834543 1917 dev_kfree_skb(priv->beacon_skb);
12e934dc 1918 priv->beacon_skb = NULL;
b481de9c
ZY		 1919}
1920
5b9f8cd3 1921static void iwl_down(struct iwl_priv *priv)
b481de9c 1922{
6ac2f839 1923 mutex_lock(&priv->shrd->mutex);
5b9f8cd3 1924 __iwl_down(priv);
6ac2f839 1925 mutex_unlock(&priv->shrd->mutex);
b24d22b1 1926
4e39317d 1927 iwl_cancel_deferred_work(priv);
b481de9c
ZY		 1928}
1929
1930#define MAX_HW_RESTARTS 5
1931
5b9f8cd3 1932static int __iwl_up(struct iwl_priv *priv)
b481de9c 1933{
a194e324 1934 struct iwl_rxon_context *ctx;
57aab75a 1935 int ret;
b481de9c 1936
6ac2f839 1937 lockdep_assert_held(&priv->shrd->mutex);
ca7966c8 1938
63013ae3 1939 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
39aadf8c 1940 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
b481de9c
ZY		 1941 return -EIO;
1942 }
1943
a194e324 1944 for_each_context(priv, ctx) {
a30e3112 1945 ret = iwlagn_alloc_bcast_station(priv, ctx);
a194e324
JB		 1946 if (ret) {
1947 iwl_dealloc_bcast_stations(priv);
1948 return ret;
1949 }
1950 }
2c810ccd 1951
ca7966c8
JB		 1952 ret = iwlagn_run_init_ucode(priv);
1953 if (ret) {
1954 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1955 goto error;
1956 }
b481de9c 1957
ca7966c8 1958 ret = iwlagn_load_ucode_wait_alive(priv,
dbf28e21 1959 &priv->ucode_rt,
872907bb 1960 IWL_UCODE_REGULAR);
ca7966c8
JB		 1961 if (ret) {
1962 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1963 goto error;
b481de9c
ZY		 1964 }
1965
ca7966c8
JB		 1966 ret = iwl_alive_start(priv);
1967 if (ret)
1968 goto error;
1969 return 0;
1970
1971 error:
63013ae3 1972 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
5b9f8cd3 1973 __iwl_down(priv);
63013ae3 1974 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
b481de9c 1975
ca7966c8
JB		 1976 IWL_ERR(priv, "Unable to initialize device.\n");
1977 return ret;
b481de9c
ZY		 1978}
1979
1980
1981/*****************************************************************************
1982 *
1983 * Workqueue callbacks
1984 *
1985 *****************************************************************************/
1986
16e727e8
EG		 1987static void iwl_bg_run_time_calib_work(struct work_struct *work)
1988{
1989 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1990 run_time_calib_work);
1991
6ac2f839 1992 mutex_lock(&priv->shrd->mutex);
16e727e8 1993
63013ae3
EG		 1994 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1995 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
6ac2f839 1996 mutex_unlock(&priv->shrd->mutex);
16e727e8
EG		 1997 return;
1998 }
1999
2000 if (priv->start_calib) {
0da0e5bf
JB		 2001 iwl_chain_noise_calibration(priv);
2002 iwl_sensitivity_calibration(priv);
16e727e8
EG		 2003 }
2004
6ac2f839 2005 mutex_unlock(&priv->shrd->mutex);
16e727e8
EG		 2006}
2007
e43e85c4
JB		 2008static void iwlagn_prepare_restart(struct iwl_priv *priv)
2009{
2010 struct iwl_rxon_context *ctx;
2011 bool bt_full_concurrent;
2012 u8 bt_ci_compliance;
2013 u8 bt_load;
2014 u8 bt_status;
207ecc5e 2015 bool bt_is_sco;
e43e85c4 2016
6ac2f839 2017 lockdep_assert_held(&priv->shrd->mutex);
e43e85c4
JB		 2018
2019 for_each_context(priv, ctx)
2020 ctx->vif = NULL;
2021 priv->is_open = 0;
2022
2023 /*
2024 * __iwl_down() will clear the BT status variables,
2025 * which is correct, but when we restart we really
2026 * want to keep them so restore them afterwards.
2027 *
2028 * The restart process will later pick them up and
2029 * re-configure the hw when we reconfigure the BT
2030 * command.
2031 */
2032 bt_full_concurrent = priv->bt_full_concurrent;
2033 bt_ci_compliance = priv->bt_ci_compliance;
2034 bt_load = priv->bt_traffic_load;
2035 bt_status = priv->bt_status;
207ecc5e 2036 bt_is_sco = priv->bt_is_sco;
e43e85c4
JB		 2037
2038 __iwl_down(priv);
2039
2040 priv->bt_full_concurrent = bt_full_concurrent;
2041 priv->bt_ci_compliance = bt_ci_compliance;
2042 priv->bt_traffic_load = bt_load;
2043 priv->bt_status = bt_status;
207ecc5e 2044 priv->bt_is_sco = bt_is_sco;
e43e85c4
JB		 2045}
2046
5b9f8cd3 2047static void iwl_bg_restart(struct work_struct *data)
b481de9c 2048{
c79dd5b5 2049 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
b481de9c 2050
63013ae3 2051 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
b481de9c
ZY		 2052 return;
2053
63013ae3 2054 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
6ac2f839 2055 mutex_lock(&priv->shrd->mutex);
e43e85c4 2056 iwlagn_prepare_restart(priv);
6ac2f839 2057 mutex_unlock(&priv->shrd->mutex);
a1174138 2058 iwl_cancel_deferred_work(priv);
19cc1087
JB		 2059 ieee80211_restart_hw(priv->hw);
2060 } else {
ca7966c8 2061 WARN_ON(1);
19cc1087 2062 }
b481de9c
ZY		 2063}
2064
b481de9c
ZY		 2065/*****************************************************************************
2066 *
2067 * mac80211 entry point functions
2068 *
2069 *****************************************************************************/
2070
0fd09502
JB		 2071static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2072 {
2073 .max = 1,
2074 .types = BIT(NL80211_IFTYPE_STATION),
2075 },
2076 {
2077 .max = 1,
2078 .types = BIT(NL80211_IFTYPE_AP),
2079 },
2080};
2081
2082static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2083 {
2084 .max = 2,
2085 .types = BIT(NL80211_IFTYPE_STATION),
2086 },
2087};
2088
2089static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2090 {
2091 .max = 1,
2092 .types = BIT(NL80211_IFTYPE_STATION),
2093 },
2094 {
2095 .max = 1,
2096 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2097 BIT(NL80211_IFTYPE_AP),
2098 },
2099};
2100
2101static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2102 {
2103 .max = 2,
2104 .types = BIT(NL80211_IFTYPE_STATION),
2105 },
2106 {
2107 .max = 1,
2108 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2109 },
2110};
2111
2112static const struct ieee80211_iface_combination
2113iwlagn_iface_combinations_dualmode[] = {
2114 { .num_different_channels = 1,
2115 .max_interfaces = 2,
2116 .beacon_int_infra_match = true,
2117 .limits = iwlagn_sta_ap_limits,
2118 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2119 },
2120 { .num_different_channels = 1,
2121 .max_interfaces = 2,
2122 .limits = iwlagn_2sta_limits,
2123 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2124 },
2125};
2126
2127static const struct ieee80211_iface_combination
2128iwlagn_iface_combinations_p2p[] = {
2129 { .num_different_channels = 1,
2130 .max_interfaces = 2,
2131 .beacon_int_infra_match = true,
2132 .limits = iwlagn_p2p_sta_go_limits,
2133 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2134 },
2135 { .num_different_channels = 1,
2136 .max_interfaces = 2,
2137 .limits = iwlagn_p2p_2sta_limits,
2138 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2139 },
2140};
2141
f0b6e2e8
RC		 2142/*
2143 * Not a mac80211 entry point function, but it fits in with all the
2144 * other mac80211 functions grouped here.
2145 */
dd7a2509
JB		 2146static int iwl_mac_setup_register(struct iwl_priv *priv,
2147 struct iwlagn_ucode_capabilities *capa)
f0b6e2e8
RC		 2148{
2149 int ret;
2150 struct ieee80211_hw *hw = priv->hw;
d0fe478c
JB		 2151 struct iwl_rxon_context *ctx;
2152
f0b6e2e8
RC		 2153 hw->rate_control_algorithm = "iwl-agn-rs";
2154
2155 /* Tell mac80211 our characteristics */
2156 hw->flags = IEEE80211_HW_SIGNAL_DBM |
f0b6e2e8 2157 IEEE80211_HW_AMPDU_AGGREGATION |
2491fa42 2158 IEEE80211_HW_NEED_DTIM_PERIOD |
6fb5511a
JB		 2159 IEEE80211_HW_SPECTRUM_MGMT |
2160 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
f0b6e2e8 2161
9b768832
JB		 2162 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2163
23c0fcc6
WYG		 2164 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2165 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
f0b6e2e8 2166
88950758 2167 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
ba37a3d0
JB		 2168 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2169 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2170
3997ff39
JB		 2171 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2172 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2173
8d9698b3 2174 hw->sta_data_size = sizeof(struct iwl_station_priv);
fd1af15d
JB		 2175 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2176
d0fe478c
JB		 2177 for_each_context(priv, ctx) {
2178 hw->wiphy->interface_modes |= ctx->interface_modes;
2179 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2180 }
f0b6e2e8 2181
0fd09502
JB		 2182 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2183
f35490f9 2184 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
0fd09502
JB		 2185 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2186 hw->wiphy->n_iface_combinations =
2187 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
f35490f9 2188 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
0fd09502
JB		 2189 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2190 hw->wiphy->n_iface_combinations =
2191 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2192 }
2193
9b9190d9
JB		 2194 hw->wiphy->max_remain_on_channel_duration = 1000;
2195
f6c8f152 2196 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
274102a8
JB		 2197 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2198 WIPHY_FLAG_IBSS_RSN;
f0b6e2e8 2199
c8ac61cf
JB		 2200 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2201 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2202 WIPHY_WOWLAN_DISCONNECT |
2203 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2204 WIPHY_WOWLAN_RFKILL_RELEASE;
2205 if (!iwlagn_mod_params.sw_crypto)
2206 hw->wiphy->wowlan.flags |=
2207 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2208 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2209
2210 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2211 hw->wiphy->wowlan.pattern_min_len =
2212 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2213 hw->wiphy->wowlan.pattern_max_len =
2214 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2215 }
2216
0172b029
WYG		 2217 if (iwlagn_mod_params.power_save)
2218 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2219 else
2220 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
f0b6e2e8 2221
1382c71c 2222 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
f0b6e2e8 2223 /* we create the 802.11 header and a zero-length SSID element */
dd7a2509 2224 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
f0b6e2e8
RC		 2225
2226 /* Default value; 4 EDCA QOS priorities */
2227 hw->queues = 4;
2228
2229 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2230
2231 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2232 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2233 &priv->bands[IEEE80211_BAND_2GHZ];
2234 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2235 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2236 &priv->bands[IEEE80211_BAND_5GHZ];
2237
5ed540ae
WYG		 2238 iwl_leds_init(priv);
2239
f0b6e2e8
RC		 2240 ret = ieee80211_register_hw(priv->hw);
2241 if (ret) {
2242 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2243 return ret;
2244 }
2245 priv->mac80211_registered = 1;
2246
2247 return 0;
2248}
2249
2250
2dedbf58 2251static int iwlagn_mac_start(struct ieee80211_hw *hw)
b481de9c 2252{
c79dd5b5 2253 struct iwl_priv *priv = hw->priv;
5a66926a 2254 int ret;
b481de9c 2255
e1623446 2256 IWL_DEBUG_MAC80211(priv, "enter\n");
b481de9c
ZY		 2257
2258 /* we should be verifying the device is ready to be opened */
6ac2f839 2259 mutex_lock(&priv->shrd->mutex);
5b9f8cd3 2260 ret = __iwl_up(priv);
6ac2f839 2261 mutex_unlock(&priv->shrd->mutex);
e655b9f0 2262 if (ret)
6cd0b1cb 2263 return ret;
e655b9f0 2264
e1623446 2265 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
e655b9f0 2266
ca7966c8 2267 /* Now we should be done, and the READY bit should be set. */
63013ae3 2268 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
ca7966c8 2269 ret = -EIO;
0a078ffa 2270
5ed540ae 2271 iwlagn_led_enable(priv);
e932a609 2272
0a078ffa 2273 priv->is_open = 1;
e1623446 2274 IWL_DEBUG_MAC80211(priv, "leave\n");
b481de9c
ZY		 2275 return 0;
2276}
2277
2dedbf58 2278static void iwlagn_mac_stop(struct ieee80211_hw *hw)
b481de9c 2279{
c79dd5b5 2280 struct iwl_priv *priv = hw->priv;
b481de9c 2281
e1623446 2282 IWL_DEBUG_MAC80211(priv, "enter\n");
948c171c 2283
19cc1087 2284 if (!priv->is_open)
e655b9f0 2285 return;
e655b9f0 2286
b481de9c 2287 priv->is_open = 0;
5a66926a 2288
5b9f8cd3 2289 iwl_down(priv);
5a66926a 2290
74e28e44 2291 flush_workqueue(priv->shrd->workqueue);
6cd0b1cb 2292
554d1d02
SG		 2293 /* User space software may expect getting rfkill changes
2294 * even if interface is down */
6cd0b1cb 2295 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
554d1d02 2296 iwl_enable_rfkill_int(priv);
948c171c 2297
e1623446 2298 IWL_DEBUG_MAC80211(priv, "leave\n");
b481de9c
ZY		 2299}
2300
26293133 2301#ifdef CONFIG_PM
c8ac61cf
JB		 2302static int iwlagn_send_patterns(struct iwl_priv *priv,
2303 struct cfg80211_wowlan *wowlan)
2304{
2305 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2306 struct iwl_host_cmd cmd = {
2307 .id = REPLY_WOWLAN_PATTERNS,
2308 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2309 .flags = CMD_SYNC,
2310 };
2311 int i, err;
2312
2313 if (!wowlan->n_patterns)
2314 return 0;
2315
2316 cmd.len[0] = sizeof(*pattern_cmd) +
2317 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2318
2319 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2320 if (!pattern_cmd)
2321 return -ENOMEM;
2322
2323 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2324
2325 for (i = 0; i < wowlan->n_patterns; i++) {
2326 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2327
2328 memcpy(&pattern_cmd->patterns[i].mask,
2329 wowlan->patterns[i].mask, mask_len);
2330 memcpy(&pattern_cmd->patterns[i].pattern,
2331 wowlan->patterns[i].pattern,
2332 wowlan->patterns[i].pattern_len);
2333 pattern_cmd->patterns[i].mask_size = mask_len;
2334 pattern_cmd->patterns[i].pattern_size =
2335 wowlan->patterns[i].pattern_len;
2336 }
2337
2338 cmd.data[0] = pattern_cmd;
e6bb4c9c 2339 err = iwl_trans_send_cmd(trans(priv), &cmd);
c8ac61cf
JB		 2340 kfree(pattern_cmd);
2341 return err;
2342}
26293133 2343#endif
c8ac61cf
JB		 2344
2345static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2346 struct ieee80211_vif *vif,
2347 struct cfg80211_gtk_rekey_data *data)
2348{
2349 struct iwl_priv *priv = hw->priv;
2350
2351 if (iwlagn_mod_params.sw_crypto)
2352 return;
2353
6ac2f839 2354 mutex_lock(&priv->shrd->mutex);
c8ac61cf
JB		 2355
2356 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2357 goto out;
2358
2359 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2360 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2361 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2362 priv->have_rekey_data = true;
2363
2364 out:
6ac2f839 2365 mutex_unlock(&priv->shrd->mutex);
c8ac61cf
JB		 2366}
2367
2368struct wowlan_key_data {
2369 struct iwl_rxon_context *ctx;
2370 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2371 struct iwlagn_wowlan_tkip_params_cmd *tkip;
2372 const u8 *bssid;
2373 bool error, use_rsc_tsc, use_tkip;
2374};
2375
26293133 2376#ifdef CONFIG_PM
c8ac61cf
JB		 2377static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2378{
2379 int i;
2380
2381 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2382 out[i] = cpu_to_le16(p1k[i]);
2383}
2384
2385static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2386 struct ieee80211_vif *vif,
2387 struct ieee80211_sta *sta,
2388 struct ieee80211_key_conf *key,
2389 void *_data)
2390{
2391 struct iwl_priv *priv = hw->priv;
2392 struct wowlan_key_data *data = _data;
2393 struct iwl_rxon_context *ctx = data->ctx;
2394 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2395 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2396 struct iwlagn_p1k_cache *rx_p1ks;
2397 u8 *rx_mic_key;
2398 struct ieee80211_key_seq seq;
2399 u32 cur_rx_iv32 = 0;
2400 u16 p1k[IWLAGN_P1K_SIZE];
2401 int ret, i;
2402
6ac2f839 2403 mutex_lock(&priv->shrd->mutex);
c8ac61cf
JB		 2404
2405 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2406 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2407 !sta && !ctx->key_mapping_keys)
2408 ret = iwl_set_default_wep_key(priv, ctx, key);
2409 else
2410 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2411
2412 if (ret) {
2413 IWL_ERR(priv, "Error setting key during suspend!\n");
2414 data->error = true;
2415 }
2416
2417 switch (key->cipher) {
2418 case WLAN_CIPHER_SUITE_TKIP:
2419 if (sta) {
2420 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2421 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2422
2423 rx_p1ks = data->tkip->rx_uni;
2424
2425 ieee80211_get_key_tx_seq(key, &seq);
2426 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2427 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2428
2429 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2430 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2431
2432 memcpy(data->tkip->mic_keys.tx,
2433 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2434 IWLAGN_MIC_KEY_SIZE);
2435
2436 rx_mic_key = data->tkip->mic_keys.rx_unicast;
2437 } else {
2438 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2439 rx_p1ks = data->tkip->rx_multi;
2440 rx_mic_key = data->tkip->mic_keys.rx_mcast;
2441 }
2442
2443 /*
2444 * For non-QoS this relies on the fact that both the uCode and
2445 * mac80211 use TID 0 (as they need to to avoid replay attacks)
2446 * for checking the IV in the frames.
2447 */
2448 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2449 ieee80211_get_key_rx_seq(key, i, &seq);
2450 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2451 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2452 /* wrapping isn't allowed, AP must rekey */
2453 if (seq.tkip.iv32 > cur_rx_iv32)
2454 cur_rx_iv32 = seq.tkip.iv32;
2455 }
2456
2457 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2458 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2459 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2460 cur_rx_iv32 + 1, p1k);
2461 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2462
2463 memcpy(rx_mic_key,
2464 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2465 IWLAGN_MIC_KEY_SIZE);
2466
2467 data->use_tkip = true;
2468 data->use_rsc_tsc = true;
2469 break;
2470 case WLAN_CIPHER_SUITE_CCMP:
2471 if (sta) {
2472 u8 *pn = seq.ccmp.pn;
2473
2474 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2475 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2476
2477 ieee80211_get_key_tx_seq(key, &seq);
2478 aes_tx_sc->pn = cpu_to_le64(
2479 (u64)pn[5] |
2480 ((u64)pn[4] << 8) |
2481 ((u64)pn[3] << 16) |
2482 ((u64)pn[2] << 24) |
2483 ((u64)pn[1] << 32) |
2484 ((u64)pn[0] << 40));
2485 } else
2486 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2487
2488 /*
2489 * For non-QoS this relies on the fact that both the uCode and
2490 * mac80211 use TID 0 for checking the IV in the frames.
2491 */
2492 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2493 u8 *pn = seq.ccmp.pn;
2494
2495 ieee80211_get_key_rx_seq(key, i, &seq);
2496 aes_sc->pn = cpu_to_le64(
2497 (u64)pn[5] |
2498 ((u64)pn[4] << 8) |
2499 ((u64)pn[3] << 16) |
2500 ((u64)pn[2] << 24) |
2501 ((u64)pn[1] << 32) |
2502 ((u64)pn[0] << 40));
2503 }
2504 data->use_rsc_tsc = true;
2505 break;
2506 }
2507
6ac2f839 2508 mutex_unlock(&priv->shrd->mutex);
c8ac61cf
JB		 2509}
2510
2511static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2512 struct cfg80211_wowlan *wowlan)
2513{
2514 struct iwl_priv *priv = hw->priv;
2515 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2516 struct iwl_rxon_cmd rxon;
2517 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2518 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2519 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2520 struct wowlan_key_data key_data = {
2521 .ctx = ctx,
2522 .bssid = ctx->active.bssid_addr,
2523 .use_rsc_tsc = false,
2524 .tkip = &tkip_cmd,
2525 .use_tkip = false,
2526 };
2527 int ret, i;
2528 u16 seq;
2529
2530 if (WARN_ON(!wowlan))
2531 return -EINVAL;
2532
6ac2f839 2533 mutex_lock(&priv->shrd->mutex);
c8ac61cf
JB		 2534
2535 /* Don't attempt WoWLAN when not associated, tear down instead. */
2536 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2537 !iwl_is_associated_ctx(ctx)) {
2538 ret = 1;
2539 goto out;
2540 }
2541
2542 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2543 if (!key_data.rsc_tsc) {
2544 ret = -ENOMEM;
2545 goto out;
2546 }
2547
2548 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2549
2550 /*
2551 * We know the last used seqno, and the uCode expects to know that
2552 * one, it will increment before TX.
2553 */
2554 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2555 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2556
2557 /*
2558 * For QoS counters, we store the one to use next, so subtract 0x10
2559 * since the uCode will add 0x10 before using the value.
2560 */
2561 for (i = 0; i < 8; i++) {
2562 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2563 seq -= 0x10;
2564 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2565 }
2566
2567 if (wowlan->disconnect)
2568 wakeup_filter_cmd.enabled |=
2569 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2570 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2571 if (wowlan->magic_pkt)
2572 wakeup_filter_cmd.enabled |=
2573 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2574 if (wowlan->gtk_rekey_failure)
2575 wakeup_filter_cmd.enabled |=
2576 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2577 if (wowlan->eap_identity_req)
2578 wakeup_filter_cmd.enabled |=
2579 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2580 if (wowlan->four_way_handshake)
2581 wakeup_filter_cmd.enabled |=
2582 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2583 if (wowlan->rfkill_release)
2584 wakeup_filter_cmd.enabled |=
2585 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2586 if (wowlan->n_patterns)
2587 wakeup_filter_cmd.enabled |=
2588 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2589
2590 iwl_scan_cancel_timeout(priv, 200);
2591
2592 memcpy(&rxon, &ctx->active, sizeof(rxon));
2593
e6bb4c9c 2594 iwl_trans_stop_device(trans(priv));
c8ac61cf
JB		 2595
2596 priv->wowlan = true;
2597
2598 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2599 IWL_UCODE_WOWLAN);
2600 if (ret)
2601 goto error;
2602
2603 /* now configure WoWLAN ucode */
2604 ret = iwl_alive_start(priv);
2605 if (ret)
2606 goto error;
2607
2608 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2609 ret = iwlagn_commit_rxon(priv, ctx);
2610 if (ret)
2611 goto error;
2612
2613 ret = iwl_power_update_mode(priv, true);
2614 if (ret)
2615 goto error;
2616
2617 if (!iwlagn_mod_params.sw_crypto) {
2618 /* mark all keys clear */
2619 priv->ucode_key_table = 0;
2620 ctx->key_mapping_keys = 0;
2621
2622 /*
2623 * This needs to be unlocked due to lock ordering
2624 * constraints. Since we're in the suspend path
2625 * that isn't really a problem though.
2626 */
6ac2f839 2627 mutex_unlock(&priv->shrd->mutex);
c8ac61cf
JB		 2628 ieee80211_iter_keys(priv->hw, ctx->vif,
2629 iwlagn_wowlan_program_keys,
2630 &key_data);
6ac2f839 2631 mutex_lock(&priv->shrd->mutex);
c8ac61cf
JB		 2632 if (key_data.error) {
2633 ret = -EIO;
2634 goto error;
2635 }
2636
2637 if (key_data.use_rsc_tsc) {
2638 struct iwl_host_cmd rsc_tsc_cmd = {
2639 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2640 .flags = CMD_SYNC,
2641 .data[0] = key_data.rsc_tsc,
2642 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2643 .len[0] = sizeof(*key_data.rsc_tsc),
2644 };
2645
e6bb4c9c 2646 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
c8ac61cf
JB		 2647 if (ret)
2648 goto error;
2649 }
2650
2651 if (key_data.use_tkip) {
e6bb4c9c 2652 ret = iwl_trans_send_cmd_pdu(trans(priv),
c8ac61cf
JB		 2653 REPLY_WOWLAN_TKIP_PARAMS,
2654 CMD_SYNC, sizeof(tkip_cmd),
2655 &tkip_cmd);
2656 if (ret)
2657 goto error;
2658 }
2659
2660 if (priv->have_rekey_data) {
2661 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2662 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2663 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2664 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2665 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2666 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2667
e6bb4c9c 2668 ret = iwl_trans_send_cmd_pdu(trans(priv),
c8ac61cf
JB		 2669 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2670 CMD_SYNC, sizeof(kek_kck_cmd),
2671 &kek_kck_cmd);
2672 if (ret)
2673 goto error;
2674 }
2675 }
2676
e6bb4c9c 2677 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
c8ac61cf
JB		 2678 CMD_SYNC, sizeof(wakeup_filter_cmd),
2679 &wakeup_filter_cmd);
2680 if (ret)
2681 goto error;
2682
2683 ret = iwlagn_send_patterns(priv, wowlan);
2684 if (ret)
2685 goto error;
2686
2687 device_set_wakeup_enable(priv->bus->dev, true);
2688
2689 /* Now let the ucode operate on its own */
2690 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2691 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2692
2693 goto out;
2694
2695 error:
2696 priv->wowlan = false;
2697 iwlagn_prepare_restart(priv);
2698 ieee80211_restart_hw(priv->hw);
2699 out:
6ac2f839 2700 mutex_unlock(&priv->shrd->mutex);
c8ac61cf
JB		 2701 kfree(key_data.rsc_tsc);
2702 return ret;
2703}
2704
2705static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2706{
2707 struct iwl_priv *priv = hw->priv;
2708 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2709 struct ieee80211_vif *vif;
2710 unsigned long flags;
2711 u32 base, status = 0xffffffff;
2712 int ret = -EIO;
2713
6ac2f839 2714 mutex_lock(&priv->shrd->mutex);
c8ac61cf
JB		 2715
2716 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2717 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2718
2719 base = priv->device_pointers.error_event_table;
2720 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2721 spin_lock_irqsave(&priv->reg_lock, flags);
2722 ret = iwl_grab_nic_access_silent(priv);
2723 if (ret == 0) {
2724 iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2725 status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2726 iwl_release_nic_access(priv);
2727 }
2728 spin_unlock_irqrestore(&priv->reg_lock, flags);
2729
2730#ifdef CONFIG_IWLWIFI_DEBUGFS
2731 if (ret == 0) {
2732 if (!priv->wowlan_sram)
2733 priv->wowlan_sram =
2734 kzalloc(priv->ucode_wowlan.data.len,
2735 GFP_KERNEL);
2736
2737 if (priv->wowlan_sram)
2738 _iwl_read_targ_mem_words(
2739 priv, 0x800000, priv->wowlan_sram,
2740 priv->ucode_wowlan.data.len / 4);
2741 }
2742#endif
2743 }
2744
2745 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2746 vif = ctx->vif;
2747
2748 priv->wowlan = false;
2749
2750 device_set_wakeup_enable(priv->bus->dev, false);
2751
2752 iwlagn_prepare_restart(priv);
2753
2754 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2755 iwl_connection_init_rx_config(priv, ctx);
2756 iwlagn_set_rxon_chain(priv, ctx);
2757
6ac2f839 2758 mutex_unlock(&priv->shrd->mutex);
c8ac61cf
JB		 2759
2760 ieee80211_resume_disconnect(vif);
2761
2762 return 1;
2763}
26293133 2764#endif
c8ac61cf 2765
2dedbf58 2766static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 2767{
c79dd5b5 2768 struct iwl_priv *priv = hw->priv;
b481de9c 2769
e1623446 2770 IWL_DEBUG_MACDUMP(priv, "enter\n");
b481de9c 2771
e1623446 2772 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
e039fa4a 2773 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
b481de9c 2774
74bcdb33 2775 if (iwlagn_tx_skb(priv, skb))
b481de9c
ZY		 2776 dev_kfree_skb_any(skb);
2777
e1623446 2778 IWL_DEBUG_MACDUMP(priv, "leave\n");
b481de9c
ZY		 2779}
2780
2dedbf58
JB		 2781static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2782 struct ieee80211_vif *vif,
2783 struct ieee80211_key_conf *keyconf,
2784 struct ieee80211_sta *sta,
2785 u32 iv32, u16 *phase1key)
ab885f8c 2786{
9f58671e 2787 struct iwl_priv *priv = hw->priv;
ab885f8c 2788
5a3d9882 2789 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
ab885f8c
EG		 2790}
2791
2dedbf58
JB		 2792static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2793 struct ieee80211_vif *vif,
2794 struct ieee80211_sta *sta,
2795 struct ieee80211_key_conf *key)
b481de9c 2796{
c79dd5b5 2797 struct iwl_priv *priv = hw->priv;
a194e324 2798 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
c10afb6e 2799 struct iwl_rxon_context *ctx = vif_priv->ctx;
42986796 2800 int ret;
42986796 2801 bool is_default_wep_key = false;
b481de9c 2802
e1623446 2803 IWL_DEBUG_MAC80211(priv, "enter\n");
b481de9c 2804
9d143e9a 2805 if (iwlagn_mod_params.sw_crypto) {
e1623446 2806 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
b481de9c
ZY		 2807 return -EOPNOTSUPP;
2808 }
b481de9c 2809
274102a8 2810 /*
5a3d9882
JB		 2811 * We could program these keys into the hardware as well, but we
2812 * don't expect much multicast traffic in IBSS and having keys
2813 * for more stations is probably more useful.
2814 *
2815 * Mark key TX-only and return 0.
274102a8
JB		 2816 */
2817 if (vif->type == NL80211_IFTYPE_ADHOC &&
5a3d9882
JB		 2818 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2819 key->hw_key_idx = WEP_INVALID_OFFSET;
2820 return 0;
2821 }
274102a8 2822
5a3d9882
JB		 2823 /* If they key was TX-only, accept deletion */
2824 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2825 return 0;
b481de9c 2826
6ac2f839 2827 mutex_lock(&priv->shrd->mutex);
2a421b91 2828 iwl_scan_cancel_timeout(priv, 100);
6974e363 2829
5a3d9882
JB		 2830 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2831
a90178fa
JB		 2832 /*
2833 * If we are getting WEP group key and we didn't receive any key mapping
6974e363
EG		 2834 * so far, we are in legacy wep mode (group key only), otherwise we are
2835 * in 1X mode.
a90178fa
JB		 2836 * In legacy wep mode, we use another host command to the uCode.
2837 */
97359d12 2838 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
5a3d9882 2839 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
6974e363 2840 if (cmd == SET_KEY)
c10afb6e 2841 is_default_wep_key = !ctx->key_mapping_keys;
6974e363 2842 else
ccc038ab 2843 is_default_wep_key =
5a3d9882 2844 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
6974e363 2845 }
052c4b9f 2846
5a3d9882 2847
b481de9c 2848 switch (cmd) {
deb09c43 2849 case SET_KEY:
5a3d9882 2850 if (is_default_wep_key) {
2995bafa 2851 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
5a3d9882
JB		 2852 break;
2853 }
2854 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2855 if (ret) {
2856 /*
2857 * can't add key for RX, but we don't need it
2858 * in the device for TX so still return 0
2859 */
2860 ret = 0;
2861 key->hw_key_idx = WEP_INVALID_OFFSET;
2862 }
deb09c43 2863
e1623446 2864 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
b481de9c
ZY		 2865 break;
2866 case DISABLE_KEY:
6974e363 2867 if (is_default_wep_key)
c10afb6e 2868 ret = iwl_remove_default_wep_key(priv, ctx, key);
deb09c43 2869 else
5a3d9882 2870 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
deb09c43 2871
e1623446 2872 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
b481de9c
ZY		 2873 break;
2874 default:
deb09c43 2875 ret = -EINVAL;
b481de9c
ZY		 2876 }
2877
6ac2f839 2878 mutex_unlock(&priv->shrd->mutex);
e1623446 2879 IWL_DEBUG_MAC80211(priv, "leave\n");
b481de9c 2880
deb09c43 2881 return ret;
b481de9c
ZY		 2882}
2883
2dedbf58
JB		 2884static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2885 struct ieee80211_vif *vif,
2886 enum ieee80211_ampdu_mlme_action action,
2887 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2888 u8 buf_size)
d783b061
TW		 2889{
2890 struct iwl_priv *priv = hw->priv;
4620fefa 2891 int ret = -EINVAL;
7b090687 2892 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
d783b061 2893
e1623446 2894 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
e174961c 2895 sta->addr, tid);
d783b061 2896
88950758 2897 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
d783b061
TW		 2898 return -EACCES;
2899
6ac2f839 2900 mutex_lock(&priv->shrd->mutex);
4620fefa 2901
d783b061
TW		 2902 switch (action) {
2903 case IEEE80211_AMPDU_RX_START:
e1623446 2904 IWL_DEBUG_HT(priv, "start Rx\n");
4620fefa
JB		 2905 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2906 break;
d783b061 2907 case IEEE80211_AMPDU_RX_STOP:
e1623446 2908 IWL_DEBUG_HT(priv, "stop Rx\n");
619753ff 2909 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
63013ae3 2910 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
4620fefa
JB		 2911 ret = 0;
2912 break;
d783b061 2913 case IEEE80211_AMPDU_TX_START:
e1623446 2914 IWL_DEBUG_HT(priv, "start Tx\n");
619753ff 2915 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
d5a0ffa3 2916 if (ret == 0) {
898ed67b
WYG		 2917 priv->agg_tids_count++;
2918 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2919 priv->agg_tids_count);
d5a0ffa3 2920 }
4620fefa 2921 break;
d783b061 2922 case IEEE80211_AMPDU_TX_STOP:
e1623446 2923 IWL_DEBUG_HT(priv, "stop Tx\n");
619753ff 2924 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
898ed67b
WYG		 2925 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2926 priv->agg_tids_count--;
2927 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2928 priv->agg_tids_count);
d5a0ffa3 2929 }
63013ae3 2930 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
4620fefa 2931 ret = 0;
7cb1b088
WYG		 2932 if (priv->cfg->ht_params &&
2933 priv->cfg->ht_params->use_rts_for_aggregation) {
94597ab2
JB		 2934 /*
2935 * switch off RTS/CTS if it was previously enabled
2936 */
94597ab2
JB		 2937 sta_priv->lq_sta.lq.general_params.flags &=
2938 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
7e6a5886
JB		 2939 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2940 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
94597ab2 2941 }
4620fefa 2942 break;
f0527971 2943 case IEEE80211_AMPDU_TX_OPERATIONAL:
c8823ec1
JB		 2944 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2945
e6bb4c9c 2946 iwl_trans_txq_agg_setup(trans(priv), iwl_sta_id(sta), tid,
41c50542 2947 buf_size);
c8823ec1 2948
7b090687
JB		 2949 /*
2950 * If the limit is 0, then it wasn't initialised yet,
2951 * use the default. We can do that since we take the
2952 * minimum below, and we don't want to go above our
2953 * default due to hardware restrictions.
2954 */
2955 if (sta_priv->max_agg_bufsize == 0)
2956 sta_priv->max_agg_bufsize =
2957 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2958
2959 /*
2960 * Even though in theory the peer could have different
2961 * aggregation reorder buffer sizes for different sessions,
2962 * our ucode doesn't allow for that and has a global limit
2963 * for each station. Therefore, use the minimum of all the
2964 * aggregation sessions and our default value.
2965 */
2966 sta_priv->max_agg_bufsize =
2967 min(sta_priv->max_agg_bufsize, buf_size);
2968
7cb1b088
WYG		 2969 if (priv->cfg->ht_params &&
2970 priv->cfg->ht_params->use_rts_for_aggregation) {
cfecc6b4
WYG		 2971 /*
2972 * switch to RTS/CTS if it is the prefer protection
2973 * method for HT traffic
2974 */
94597ab2
JB		 2975
2976 sta_priv->lq_sta.lq.general_params.flags |=
2977 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
cfecc6b4 2978 }
7b090687
JB		 2979
2980 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2981 sta_priv->max_agg_bufsize;
2982
2983 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2984 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
5bc9890f
WYG		 2985
2986 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2987 sta->addr, tid);
cfecc6b4 2988 ret = 0;
d783b061
TW		 2989 break;
2990 }
6ac2f839 2991 mutex_unlock(&priv->shrd->mutex);
4620fefa
JB		 2992
2993 return ret;
d783b061 2994}
9f58671e 2995
2dedbf58
JB		 2996static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2997 struct ieee80211_vif *vif,
2998 struct ieee80211_sta *sta)
fe6b23dd
RC		 2999{
3000 struct iwl_priv *priv = hw->priv;
3001 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
a194e324 3002 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
eafdfbd3 3003 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
fe6b23dd
RC		 3004 int ret;
3005 u8 sta_id;
3006
3007 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3008 sta->addr);
6ac2f839 3009 mutex_lock(&priv->shrd->mutex);
da5ae1cf
RC		 3010 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3011 sta->addr);
3012 sta_priv->common.sta_id = IWL_INVALID_STATION;
fe6b23dd
RC		 3013
3014 atomic_set(&sta_priv->pending_frames, 0);
3015 if (vif->type == NL80211_IFTYPE_AP)
3016 sta_priv->client = true;
3017
a194e324 3018 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
238d781d 3019 is_ap, sta, &sta_id);
fe6b23dd
RC		 3020 if (ret) {
3021 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3022 sta->addr, ret);
3023 /* Should we return success if return code is EEXIST ? */
6ac2f839 3024 mutex_unlock(&priv->shrd->mutex);
fe6b23dd
RC		 3025 return ret;
3026 }
3027
fd1af15d
JB		 3028 sta_priv->common.sta_id = sta_id;
3029
fe6b23dd 3030 /* Initialize rate scaling */
91dd6c27 3031 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
fe6b23dd
RC		 3032 sta->addr);
3033 iwl_rs_rate_init(priv, sta, sta_id);
6ac2f839 3034 mutex_unlock(&priv->shrd->mutex);
fe6b23dd 3035
fd1af15d 3036 return 0;
fe6b23dd
RC		 3037}
3038
2dedbf58
JB		 3039static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3040 struct ieee80211_channel_switch *ch_switch)
79d07325
WYG		 3041{
3042 struct iwl_priv *priv = hw->priv;
3043 const struct iwl_channel_info *ch_info;
3044 struct ieee80211_conf *conf = &hw->conf;
aa2dc6b5 3045 struct ieee80211_channel *channel = ch_switch->channel;
79d07325 3046 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
246ed355
JB		 3047 /*
3048 * MULTI-FIXME
3049 * When we add support for multiple interfaces, we need to
3050 * revisit this. The channel switch command in the device
3051 * only affects the BSS context, but what does that really
3052 * mean? And what if we get a CSA on the second interface?
3053 * This needs a lot of work.
3054 */
3055 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
79d07325 3056 u16 ch;
79d07325
WYG		 3057
3058 IWL_DEBUG_MAC80211(priv, "enter\n");
3059
6ac2f839 3060 mutex_lock(&priv->shrd->mutex);
dc1a4068 3061
79d07325 3062 if (iwl_is_rfkill(priv))
dc1a4068 3063 goto out;
79d07325 3064
63013ae3
EG		 3065 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
3066 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
3067 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
dc1a4068 3068 goto out;
79d07325 3069
246ed355 3070 if (!iwl_is_associated_ctx(ctx))
dc1a4068 3071 goto out;
79d07325 3072
90c300cb 3073 if (!priv->cfg->lib->set_channel_switch)
f973f87e 3074 goto out;
79d07325 3075
f973f87e
SG		 3076 ch = channel->hw_value;
3077 if (le16_to_cpu(ctx->active.channel) == ch)
3078 goto out;
3079
3080 ch_info = iwl_get_channel_info(priv, channel->band, ch);
3081 if (!is_channel_valid(ch_info)) {
3082 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3083 goto out;
3084 }
79d07325 3085
10b15e6f 3086 spin_lock_irq(&priv->shrd->lock);
79d07325 3087
f973f87e 3088 priv->current_ht_config.smps = conf->smps_mode;
79d07325 3089
f973f87e
SG		 3090 /* Configure HT40 channels */
3091 ctx->ht.enabled = conf_is_ht(conf);
3092 if (ctx->ht.enabled) {
3093 if (conf_is_ht40_minus(conf)) {
3094 ctx->ht.extension_chan_offset =
3095 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3096 ctx->ht.is_40mhz = true;
3097 } else if (conf_is_ht40_plus(conf)) {
3098 ctx->ht.extension_chan_offset =
3099 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3100 ctx->ht.is_40mhz = true;
3101 } else {
3102 ctx->ht.extension_chan_offset =
3103 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3104 ctx->ht.is_40mhz = false;
79d07325 3105 }
f973f87e
SG		 3106 } else
3107 ctx->ht.is_40mhz = false;
3108
3109 if ((le16_to_cpu(ctx->staging.channel) != ch))
3110 ctx->staging.flags = 0;
3111
3112 iwl_set_rxon_channel(priv, channel, ctx);
3113 iwl_set_rxon_ht(priv, ht_conf);
3114 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3115
10b15e6f 3116 spin_unlock_irq(&priv->shrd->lock);
f973f87e
SG		 3117
3118 iwl_set_rate(priv);
3119 /*
3120 * at this point, staging_rxon has the
3121 * configuration for channel switch
3122 */
63013ae3 3123 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
f973f87e 3124 priv->switch_channel = cpu_to_le16(ch);
90c300cb 3125 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
63013ae3 3126 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
f973f87e
SG		 3127 priv->switch_channel = 0;
3128 ieee80211_chswitch_done(ctx->vif, false);
79d07325 3129 }
f973f87e 3130
79d07325 3131out:
6ac2f839 3132 mutex_unlock(&priv->shrd->mutex);
79d07325
WYG		 3133 IWL_DEBUG_MAC80211(priv, "leave\n");
3134}
3135
2dedbf58
JB		 3136static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3137 unsigned int changed_flags,
3138 unsigned int *total_flags,
3139 u64 multicast)
8b8ab9d5
JB		 3140{
3141 struct iwl_priv *priv = hw->priv;
3142 __le32 filter_or = 0, filter_nand = 0;
246ed355 3143 struct iwl_rxon_context *ctx;
8b8ab9d5
JB		 3144
3145#define CHK(test, flag) do { \
3146 if (*total_flags & (test)) \
3147 filter_or |= (flag); \
3148 else \
3149 filter_nand |= (flag); \
3150 } while (0)
3151
3152 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3153 changed_flags, *total_flags);
3154
3155 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
bdb84fec
JB		 3156 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3157 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
8b8ab9d5
JB		 3158 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3159
3160#undef CHK
3161
6ac2f839 3162 mutex_lock(&priv->shrd->mutex);
8b8ab9d5 3163
246ed355
JB		 3164 for_each_context(priv, ctx) {
3165 ctx->staging.filter_flags &= ~filter_nand;
3166 ctx->staging.filter_flags |= filter_or;
749ff4ef
SG		 3167
3168 /*
3169 * Not committing directly because hardware can perform a scan,
3170 * but we'll eventually commit the filter flags change anyway.
3171 */
246ed355 3172 }
8b8ab9d5 3173
6ac2f839 3174 mutex_unlock(&priv->shrd->mutex);
8b8ab9d5
JB		 3175
3176 /*
3177 * Receiving all multicast frames is always enabled by the
3178 * default flags setup in iwl_connection_init_rx_config()
3179 * since we currently do not support programming multicast
3180 * filters into the device.
3181 */
3182 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3183 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3184}
3185
2dedbf58 3186static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
716c74b0
WYG		 3187{
3188 struct iwl_priv *priv = hw->priv;
3189
6ac2f839 3190 mutex_lock(&priv->shrd->mutex);
716c74b0
WYG		 3191 IWL_DEBUG_MAC80211(priv, "enter\n");
3192
63013ae3 3193 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
716c74b0
WYG		 3194 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3195 goto done;
3196 }
3197 if (iwl_is_rfkill(priv)) {
3198 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3199 goto done;
3200 }
3201
3202 /*
3203 * mac80211 will not push any more frames for transmit
3204 * until the flush is completed
3205 */
3206 if (drop) {
3207 IWL_DEBUG_MAC80211(priv, "send flush command\n");
c68744fb 3208 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
716c74b0
WYG		 3209 IWL_ERR(priv, "flush request fail\n");
3210 goto done;
3211 }
3212 }
3213 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3214 iwlagn_wait_tx_queue_empty(priv);
3215done:
6ac2f839 3216 mutex_unlock(&priv->shrd->mutex);
716c74b0
WYG		 3217 IWL_DEBUG_MAC80211(priv, "leave\n");
3218}
3219
c6baf7fb 3220void iwlagn_disable_roc(struct iwl_priv *priv)
9b9190d9
JB		 3221{
3222 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
9b9190d9 3223
6ac2f839 3224 lockdep_assert_held(&priv->shrd->mutex);
9b9190d9 3225
c6baf7fb 3226 if (!priv->hw_roc_setup)
9b9190d9
JB		 3227 return;
3228
c6baf7fb 3229 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
9b9190d9 3230 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
9b9190d9 3231
898ed67b 3232 priv->hw_roc_channel = NULL;
9b9190d9 3233
c6baf7fb
JB		 3234 memset(ctx->staging.node_addr, 0, ETH_ALEN);
3235
805a3b81 3236 iwlagn_commit_rxon(priv, ctx);
9b9190d9
JB		 3237
3238 ctx->is_active = false;
c6baf7fb 3239 priv->hw_roc_setup = false;
9b9190d9
JB		 3240}
3241
c6baf7fb 3242static void iwlagn_disable_roc_work(struct work_struct *work)
9b9190d9
JB		 3243{
3244 struct iwl_priv *priv = container_of(work, struct iwl_priv,
c6baf7fb 3245 hw_roc_disable_work.work);
9b9190d9 3246
6ac2f839 3247 mutex_lock(&priv->shrd->mutex);
9b9190d9 3248 iwlagn_disable_roc(priv);
6ac2f839 3249 mutex_unlock(&priv->shrd->mutex);
9b9190d9
JB		 3250}
3251
3252static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3253 struct ieee80211_channel *channel,
3254 enum nl80211_channel_type channel_type,
3255 int duration)
3256{
3257 struct iwl_priv *priv = hw->priv;
c6baf7fb 3258 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
9b9190d9
JB		 3259 int err = 0;
3260
3261 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3262 return -EOPNOTSUPP;
3263
c6baf7fb 3264 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
9b9190d9
JB		 3265 return -EOPNOTSUPP;
3266
6ac2f839 3267 mutex_lock(&priv->shrd->mutex);
9b9190d9 3268
c6baf7fb
JB		 3269 /*
3270 * TODO: Remove this hack! Firmware needs to be updated
3271 * to allow longer off-channel periods in scanning for
3272 * this use case, based on a flag (and we'll need an API
3273 * flag in the firmware when it has that).
3274 */
3275 if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
3276 duration = 80;
3277
63013ae3 3278 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
9b9190d9
JB		 3279 err = -EBUSY;
3280 goto out;
3281 }
3282
898ed67b
WYG		 3283 priv->hw_roc_channel = channel;
3284 priv->hw_roc_chantype = channel_type;
c6baf7fb
JB		 3285 priv->hw_roc_duration = duration;
3286 cancel_delayed_work(&priv->hw_roc_disable_work);
3287
3288 if (!ctx->is_active) {
3289 ctx->is_active = true;
3290 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3291 memcpy(ctx->staging.node_addr,
3292 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3293 ETH_ALEN);
3294 memcpy(ctx->staging.bssid_addr,
3295 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3296 ETH_ALEN);
3297 err = iwlagn_commit_rxon(priv, ctx);
3298 if (err)
3299 goto out;
3300 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
3301 RXON_FILTER_PROMISC_MSK |
3302 RXON_FILTER_CTL2HOST_MSK;
3303
3304 err = iwlagn_commit_rxon(priv, ctx);
3305 if (err) {
3306 iwlagn_disable_roc(priv);
3307 goto out;
3308 }
3309 priv->hw_roc_setup = true;
3310 }
9b9190d9 3311
c6baf7fb
JB		 3312 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
3313 if (err)
3314 iwlagn_disable_roc(priv);
9b9190d9
JB		 3315
3316 out:
6ac2f839 3317 mutex_unlock(&priv->shrd->mutex);
9b9190d9
JB		 3318
3319 return err;
3320}
3321
3322static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3323{
3324 struct iwl_priv *priv = hw->priv;
3325
3326 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3327 return -EOPNOTSUPP;
3328
6ac2f839 3329 mutex_lock(&priv->shrd->mutex);
c6baf7fb 3330 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
9b9190d9 3331 iwlagn_disable_roc(priv);
6ac2f839 3332 mutex_unlock(&priv->shrd->mutex);
9b9190d9
JB		 3333
3334 return 0;
3335}
3336
b481de9c
ZY		 3337/*****************************************************************************
3338 *
3339 * driver setup and teardown
3340 *
3341 *****************************************************************************/
3342
4e39317d 3343static void iwl_setup_deferred_work(struct iwl_priv *priv)
b481de9c 3344{
74e28e44 3345 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
b481de9c
ZY		 3346
3347 init_waitqueue_head(&priv->wait_command_queue);
3348
5b9f8cd3 3349 INIT_WORK(&priv->restart, iwl_bg_restart);
5b9f8cd3 3350 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
16e727e8 3351 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
65550636 3352 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
bee008b7 3353 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
fbba9410 3354 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
c6baf7fb
JB		 3355 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
3356 iwlagn_disable_roc_work);
2a421b91 3357
2a421b91 3358 iwl_setup_scan_deferred_work(priv);
bb8c093b 3359
6bd4dba3
EG		 3360 if (priv->cfg->lib->bt_setup_deferred_work)
3361 priv->cfg->lib->bt_setup_deferred_work(priv);
4e39317d
EG		 3362
3363 init_timer(&priv->statistics_periodic);
3364 priv->statistics_periodic.data = (unsigned long)priv;
5b9f8cd3 3365 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
b481de9c 3366
a9e1cb6a
WYG		 3367 init_timer(&priv->ucode_trace);
3368 priv->ucode_trace.data = (unsigned long)priv;
3369 priv->ucode_trace.function = iwl_bg_ucode_trace;
3370
22de94de
SG		 3371 init_timer(&priv->watchdog);
3372 priv->watchdog.data = (unsigned long)priv;
3373 priv->watchdog.function = iwl_bg_watchdog;
b481de9c
ZY		 3374}
3375
4e39317d 3376static void iwl_cancel_deferred_work(struct iwl_priv *priv)
b481de9c 3377{
90c300cb
WYG		 3378 if (priv->cfg->lib->cancel_deferred_work)
3379 priv->cfg->lib->cancel_deferred_work(priv);
b481de9c 3380
815e629b 3381 cancel_work_sync(&priv->run_time_calib_work);
b481de9c 3382 cancel_work_sync(&priv->beacon_update);
e7e16b90
SG		 3383
3384 iwl_cancel_scan_deferred_work(priv);
3385
bee008b7 3386 cancel_work_sync(&priv->bt_full_concurrency);
fbba9410 3387 cancel_work_sync(&priv->bt_runtime_config);
c6baf7fb 3388 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
e7e16b90 3389
4e39317d 3390 del_timer_sync(&priv->statistics_periodic);
a9e1cb6a 3391 del_timer_sync(&priv->ucode_trace);
b481de9c
ZY		 3392}
3393
89f186a8
RC		 3394static void iwl_init_hw_rates(struct iwl_priv *priv,
3395 struct ieee80211_rate *rates)
3396{
3397 int i;
3398
3399 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3400 rates[i].bitrate = iwl_rates[i].ieee * 5;
3401 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3402 rates[i].hw_value_short = i;
3403 rates[i].flags = 0;
3404 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3405 /*
3406 * If CCK != 1M then set short preamble rate flag.
3407 */
3408 rates[i].flags |=
3409 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3410 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3411 }
3412 }
3413}
3414
3415static int iwl_init_drv(struct iwl_priv *priv)
3416{
3417 int ret;
3418
f39c95e8 3419 spin_lock_init(&priv->shrd->sta_lock);
89f186a8
RC		 3420 spin_lock_init(&priv->hcmd_lock);
3421
6ac2f839 3422 mutex_init(&priv->shrd->mutex);
89f186a8 3423
89f186a8
RC		 3424 priv->ieee_channels = NULL;
3425 priv->ieee_rates = NULL;
3426 priv->band = IEEE80211_BAND_2GHZ;
3427
3428 priv->iw_mode = NL80211_IFTYPE_STATION;
ba37a3d0 3429 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
a13d276f 3430 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
898ed67b 3431 priv->agg_tids_count = 0;
89f186a8 3432
8a472da4
WYG		 3433 /* initialize force reset */
3434 priv->force_reset[IWL_RF_RESET].reset_duration =
3435 IWL_DELAY_NEXT_FORCE_RF_RESET;
3436 priv->force_reset[IWL_FW_RESET].reset_duration =
3437 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
89f186a8 3438
410f2bb3
SG		 3439 priv->rx_statistics_jiffies = jiffies;
3440
89f186a8 3441 /* Choose which receivers/antennas to use */
e3f10cea 3442 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
89f186a8
RC		 3443
3444 iwl_init_scan_params(priv);
3445
22bf59a0 3446 /* init bt coex */
7cb1b088
WYG		 3447 if (priv->cfg->bt_params &&
3448 priv->cfg->bt_params->advanced_bt_coexist) {
b6e116e8
WYG		 3449 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3450 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3451 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
22bf59a0
WYG		 3452 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3453 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3454 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
22bf59a0
WYG		 3455 }
3456
89f186a8
RC		 3457 ret = iwl_init_channel_map(priv);
3458 if (ret) {
3459 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3460 goto err;
3461 }
3462
b39488a9 3463 ret = iwl_init_geos(priv);
89f186a8
RC		 3464 if (ret) {
3465 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3466 goto err_free_channel_map;
3467 }
3468 iwl_init_hw_rates(priv, priv->ieee_rates);
3469
3470 return 0;
3471
3472err_free_channel_map:
3473 iwl_free_channel_map(priv);
3474err:
3475 return ret;
3476}
3477
3478static void iwl_uninit_drv(struct iwl_priv *priv)
3479{
3480 iwl_calib_free_results(priv);
b39488a9 3481 iwl_free_geos(priv);
89f186a8 3482 iwl_free_channel_map(priv);
811ecc99 3483 kfree(priv->scan_cmd);
4ce7cc2b 3484 kfree(priv->beacon_cmd);
c8ac61cf
JB		 3485#ifdef CONFIG_IWLWIFI_DEBUGFS
3486 kfree(priv->wowlan_sram);
3487#endif
89f186a8
RC		 3488}
3489
3a3b14c2 3490static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
207ecc5e
MV		 3491 enum ieee80211_rssi_event rssi_event)
3492{
3493 struct iwl_priv *priv = hw->priv;
3494
6ac2f839 3495 mutex_lock(&priv->shrd->mutex);
207ecc5e
MV		 3496
3497 if (priv->cfg->bt_params &&
3498 priv->cfg->bt_params->advanced_bt_coexist) {
3499 if (rssi_event == RSSI_EVENT_LOW)
3500 priv->bt_enable_pspoll = true;
3501 else if (rssi_event == RSSI_EVENT_HIGH)
3502 priv->bt_enable_pspoll = false;
3503
3504 iwlagn_send_advance_bt_config(priv);
3505 } else {
3506 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3507 "ignoring RSSI callback\n");
3508 }
3509
6ac2f839 3510 mutex_unlock(&priv->shrd->mutex);
207ecc5e
MV		 3511}
3512
dc21b545 3513struct ieee80211_ops iwlagn_hw_ops = {
2295c66b
JB		 3514 .tx = iwlagn_mac_tx,
3515 .start = iwlagn_mac_start,
3516 .stop = iwlagn_mac_stop,
26293133 3517#ifdef CONFIG_PM
c8ac61cf
JB		 3518 .suspend = iwlagn_mac_suspend,
3519 .resume = iwlagn_mac_resume,
26293133 3520#endif
5b9f8cd3
EG		 3521 .add_interface = iwl_mac_add_interface,
3522 .remove_interface = iwl_mac_remove_interface,
d4daaea6 3523 .change_interface = iwl_mac_change_interface,
2295c66b 3524 .config = iwlagn_mac_config,
8b8ab9d5 3525 .configure_filter = iwlagn_configure_filter,
2295c66b
JB		 3526 .set_key = iwlagn_mac_set_key,
3527 .update_tkip_key = iwlagn_mac_update_tkip_key,
c8ac61cf 3528 .set_rekey_data = iwlagn_mac_set_rekey_data,
5b9f8cd3 3529 .conf_tx = iwl_mac_conf_tx,
2295c66b
JB		 3530 .bss_info_changed = iwlagn_bss_info_changed,
3531 .ampdu_action = iwlagn_mac_ampdu_action,
6ab10ff8 3532 .hw_scan = iwl_mac_hw_scan,
2295c66b 3533 .sta_notify = iwlagn_mac_sta_notify,
fe6b23dd
RC		 3534 .sta_add = iwlagn_mac_sta_add,
3535 .sta_remove = iwl_mac_sta_remove,
2295c66b
JB		 3536 .channel_switch = iwlagn_mac_channel_switch,
3537 .flush = iwlagn_mac_flush,
a85d7cca 3538 .tx_last_beacon = iwl_mac_tx_last_beacon,
9b9190d9
JB		 3539 .remain_on_channel = iwl_mac_remain_on_channel,
3540 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
207ecc5e 3541 .rssi_callback = iwl_mac_rssi_callback,
4613e72d 3542 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
eb64dca0 3543 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
b481de9c
ZY		 3544};
3545
e98a1302 3546static u32 iwl_hw_detect(struct iwl_priv *priv)
3867fe04 3547{
02a7fa00 3548 return iwl_read32(priv, CSR_HW_REV);
3867fe04
WYG		 3549}
3550
07d4f1ad
WYG		 3551static int iwl_set_hw_params(struct iwl_priv *priv)
3552{
d6189124
EG		 3553 hw_params(priv).max_rxq_size = RX_QUEUE_SIZE;
3554 hw_params(priv).max_rxq_log = RX_QUEUE_SIZE_LOG;
9d143e9a 3555 if (iwlagn_mod_params.amsdu_size_8K)
d6189124
EG		 3556 hw_params(priv).rx_page_order =
3557 get_order(IWL_RX_BUF_SIZE_8K);
07d4f1ad 3558 else
d6189124
EG		 3559 hw_params(priv).rx_page_order =
3560 get_order(IWL_RX_BUF_SIZE_4K);
07d4f1ad 3561
d6189124 3562 hw_params(priv).max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
07d4f1ad 3563
9d143e9a 3564 if (iwlagn_mod_params.disable_11n)
88950758 3565 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
07d4f1ad
WYG		 3566
3567 /* Device-specific setup */
90c300cb 3568 return priv->cfg->lib->set_hw_params(priv);
07d4f1ad
WYG		 3569}
3570
119ea186
WYG		 3571/* This function both allocates and initializes hw and priv. */
3572static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3573{
3574 struct iwl_priv *priv;
3575 /* mac80211 allocates memory for this device instance, including
3576 * space for this driver's private structure */
3577 struct ieee80211_hw *hw;
3578
3579 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3580 if (hw == NULL) {
3581 pr_err("%s: Can not allocate network device\n",
3582 cfg->name);
3583 goto out;
3584 }
3585
3586 priv = hw->priv;
3587 priv->hw = hw;
3588
3589out:
3590 return hw;
3591}
3592
e6bb4c9c
EG		 3593int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3594 struct iwl_cfg *cfg)
b2ea345e
WYG		 3595{
3596 int err = 0;
3597 struct iwl_priv *priv;
3598 struct ieee80211_hw *hw;
084dd791 3599 u16 num_mac;
b2ea345e
WYG		 3600 u32 hw_rev;
3601
3602 /************************
3603 * 1. Allocating HW data
3604 ************************/
b2ea345e
WYG		 3605 hw = iwl_alloc_all(cfg);
3606 if (!hw) {
3607 err = -ENOMEM;
807caf26
EG		 3608 goto out;
3609 }
3610
b2ea345e 3611 priv = hw->priv;
d5934110 3612 priv->bus = bus;
cac988a6
EG		 3613 priv->shrd = &priv->_shrd;
3614 priv->shrd->bus = bus;
3615 priv->shrd->priv = priv;
3616 bus_set_drv_data(priv->bus, priv->shrd);
a48709c5 3617
e6bb4c9c
EG		 3618 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3619 if (priv->shrd->trans == NULL) {
3620 err = -ENOMEM;
3621 goto out_free_traffic_mem;
3622 }
3623
b2ea345e 3624 /* At this point both hw and priv are allocated. */
8f2d3d2a 3625
d5934110 3626 SET_IEEE80211_DEV(hw, priv->bus->dev);
b481de9c 3627
e1623446 3628 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
82b9a121 3629 priv->cfg = cfg;
40cefda9 3630 priv->inta_mask = CSR_INI_SET_MASK;
316c30d9 3631
bee008b7
WYG		 3632 /* is antenna coupling more than 35dB ? */
3633 priv->bt_ant_couple_ok =
48f20d35
EG		 3634 (iwlagn_mod_params.ant_coupling >
3635 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3636 true : false;
bee008b7 3637
9f28ebc3 3638 /* enable/disable bt channel inhibition */
48f20d35 3639 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
9f28ebc3
WYG		 3640 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3641 (priv->bt_ch_announce) ? "On" : "Off");
f37837c9 3642
20594eb0
WYG		 3643 if (iwl_alloc_traffic_mem(priv))
3644 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
b481de9c 3645
731a29b7 3646 /* these spin locks will be used in apm_ops.init and EEPROM access
a8b50a0a
MA		 3647 * we should init now
3648 */
3649 spin_lock_init(&priv->reg_lock);
10b15e6f 3650 spin_lock_init(&priv->shrd->lock);
4843b5a7
RC		 3651
3652 /*
3653 * stop and reset the on-board processor just in case it is in a
3654 * strange state ... like being left stranded by a primary kernel
3655 * and this is now the kdump kernel trying to start up
3656 */
3657 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3658
084dd791
EG		 3659 /***********************
3660 * 3. Read REV register
3661 ***********************/
e98a1302 3662 hw_rev = iwl_hw_detect(priv);
c11362c0 3663 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
e98a1302 3664 priv->cfg->name, hw_rev);
316c30d9 3665
e6bb4c9c 3666 err = iwl_trans_request_irq(trans(priv));
1e89cbac 3667 if (err)
e6bb4c9c 3668 goto out_free_trans;
1e89cbac 3669
e6bb4c9c 3670 if (iwl_trans_prepare_card_hw(trans(priv))) {
bcd4fe2f 3671 err = -EIO;
086ed117 3672 IWL_WARN(priv, "Failed, HW not ready\n");
1e89cbac 3673 goto out_free_trans;
086ed117
MA		 3674 }
3675
91238714
TW		 3676 /*****************
3677 * 4. Read EEPROM
3678 *****************/
316c30d9 3679 /* Read the EEPROM */
e98a1302 3680 err = iwl_eeprom_init(priv, hw_rev);
316c30d9 3681 if (err) {
15b1687c 3682 IWL_ERR(priv, "Unable to init EEPROM\n");
1e89cbac 3683 goto out_free_trans;
316c30d9 3684 }
8614f360
TW		 3685 err = iwl_eeprom_check_version(priv);
3686 if (err)
c8f16138 3687 goto out_free_eeprom;
8614f360 3688
21a5b3c6
WYG		 3689 err = iwl_eeprom_check_sku(priv);
3690 if (err)
3691 goto out_free_eeprom;
3692
02883017 3693 /* extract MAC Address */
c6fa17ed
WYG		 3694 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3695 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3696 priv->hw->wiphy->addresses = priv->addresses;
3697 priv->hw->wiphy->n_addresses = 1;
3698 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3699 if (num_mac > 1) {
3700 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3701 ETH_ALEN);
3702 priv->addresses[1].addr[5]++;
3703 priv->hw->wiphy->n_addresses++;
3704 }
316c30d9
AK		 3705
3706 /************************
3707 * 5. Setup HW constants
3708 ************************/
da154e30 3709 if (iwl_set_hw_params(priv)) {
084dd791 3710 err = -ENOENT;
15b1687c 3711 IWL_ERR(priv, "failed to set hw parameters\n");
073d3f5f 3712 goto out_free_eeprom;
316c30d9
AK		 3713 }
3714
3715 /*******************
6ba87956 3716 * 6. Setup priv
316c30d9 3717 *******************/
b481de9c 3718
6ba87956 3719 err = iwl_init_drv(priv);
bf85ea4f 3720 if (err)
399f4900 3721 goto out_free_eeprom;
bf85ea4f 3722 /* At this point both hw and priv are initialized. */
316c30d9 3723
316c30d9 3724 /********************
09f9bf79 3725 * 7. Setup services
316c30d9 3726 ********************/
4e39317d 3727 iwl_setup_deferred_work(priv);
653fa4a0 3728 iwl_setup_rx_handlers(priv);
4613e72d 3729 iwl_testmode_init(priv);
316c30d9 3730
158bea07 3731 /*********************************************
084dd791 3732 * 8. Enable interrupts
158bea07 3733 *********************************************/
6ba87956 3734
554d1d02 3735 iwl_enable_rfkill_int(priv);
6cd0b1cb 3736
6cd0b1cb
HS		 3737 /* If platform's RF_KILL switch is NOT set to KILL */
3738 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
63013ae3 3739 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
6cd0b1cb 3740 else
63013ae3 3741 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
6ba87956 3742
a60e77e5 3743 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
63013ae3 3744 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
6cd0b1cb 3745
58d0f361 3746 iwl_power_initialize(priv);
39b73fb1 3747 iwl_tt_initialize(priv);
158bea07 3748
898ed67b 3749 init_completion(&priv->firmware_loading_complete);
562db532 3750
b08dfd04 3751 err = iwl_request_firmware(priv, true);
158bea07 3752 if (err)
7d47618a 3753 goto out_destroy_workqueue;
158bea07 3754
b481de9c
ZY		 3755 return 0;
3756
34c1b7ba 3757out_destroy_workqueue:
74e28e44
EG		 3758 destroy_workqueue(priv->shrd->workqueue);
3759 priv->shrd->workqueue = NULL;
6ba87956 3760 iwl_uninit_drv(priv);
34c1b7ba 3761out_free_eeprom:
073d3f5f 3762 iwl_eeprom_free(priv);
1e89cbac 3763out_free_trans:
e6bb4c9c 3764 iwl_trans_free(trans(priv));
34c1b7ba 3765out_free_traffic_mem:
20594eb0 3766 iwl_free_traffic_mem(priv);
d7c76f4c 3767 ieee80211_free_hw(priv->hw);
34c1b7ba 3768out:
b481de9c
ZY		 3769 return err;
3770}
3771
a48709c5 3772void __devexit iwl_remove(struct iwl_priv * priv)
b481de9c 3773{
0359facc 3774 unsigned long flags;
b481de9c 3775
898ed67b 3776 wait_for_completion(&priv->firmware_loading_complete);
562db532 3777
e1623446 3778 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
b481de9c 3779
67249625 3780 iwl_dbgfs_unregister(priv);
d5934110 3781 sysfs_remove_group(&priv->bus->dev->kobj,
3599d39a 3782 &iwl_attribute_group);
67249625 3783
5b9f8cd3
EG		 3784 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3785 * to be called and iwl_down since we are removing the device
0b124c31
GG		 3786 * we need to set STATUS_EXIT_PENDING bit.
3787 */
63013ae3 3788 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
5ed540ae 3789
7a4e5281 3790 iwl_testmode_cleanup(priv);
5ed540ae
WYG		 3791 iwl_leds_exit(priv);
3792
c4f55232
RR		 3793 if (priv->mac80211_registered) {
3794 ieee80211_unregister_hw(priv->hw);
3795 priv->mac80211_registered = 0;
3796 }
3797
1a10f433 3798 /* Reset to low power before unloading driver. */
14e8e4af 3799 iwl_apm_stop(priv);
c166b25a 3800
39b73fb1
WYG		 3801 iwl_tt_exit(priv);
3802
0359facc
MA		 3803 /* make sure we flush any pending irq or
3804 * tasklet for the driver
3805 */
10b15e6f 3806 spin_lock_irqsave(&priv->shrd->lock, flags);
5b9f8cd3 3807 iwl_disable_interrupts(priv);
10b15e6f 3808 spin_unlock_irqrestore(&priv->shrd->lock, flags);
0359facc 3809
e6bb4c9c 3810 iwl_trans_sync_irq(trans(priv));
0359facc 3811
3599d39a 3812 iwl_dealloc_ucode(priv);
b481de9c 3813
e6bb4c9c
EG		 3814 iwl_trans_rx_free(trans(priv));
3815 iwl_trans_tx_free(trans(priv));
b481de9c 3816
073d3f5f 3817 iwl_eeprom_free(priv);
b481de9c 3818
948c171c 3819 /*netif_stop_queue(dev); */
74e28e44 3820 flush_workqueue(priv->shrd->workqueue);
948c171c 3821
5b9f8cd3 3822 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
74e28e44 3823 * priv->shrd->workqueue... so we can't take down the workqueue
b481de9c 3824 * until now... */
74e28e44
EG		 3825 destroy_workqueue(priv->shrd->workqueue);
3826 priv->shrd->workqueue = NULL;
20594eb0 3827 iwl_free_traffic_mem(priv);
b481de9c 3828
e6bb4c9c 3829 iwl_trans_free(trans(priv));
34c1b7ba 3830
d5934110 3831 bus_set_drv_data(priv->bus, NULL);
b481de9c 3832
6ba87956 3833 iwl_uninit_drv(priv);
b481de9c 3834
77834543 3835 dev_kfree_skb(priv->beacon_skb);
b481de9c
ZY		 3836
3837 ieee80211_free_hw(priv->hw);
3838}
3839
b481de9c
ZY		 3840
3841/*****************************************************************************
3842 *
3843 * driver and module entry point
3844 *
3845 *****************************************************************************/
5b9f8cd3 3846static int __init iwl_init(void)
b481de9c
ZY		 3847{
3848
3849 int ret;
c96c31e4
JP		 3850 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3851 pr_info(DRV_COPYRIGHT "\n");
897e1cf2 3852
e227ceac 3853 ret = iwlagn_rate_control_register();
897e1cf2 3854 if (ret) {
c96c31e4 3855 pr_err("Unable to register rate control algorithm: %d\n", ret);
897e1cf2
RC		 3856 return ret;
3857 }
3858
48d1a211 3859 ret = iwl_pci_register_driver();
b481de9c 3860
48d1a211
EG		 3861 if (ret)
3862 goto error_register;
b481de9c 3863 return ret;
897e1cf2 3864
897e1cf2 3865error_register:
e227ceac 3866 iwlagn_rate_control_unregister();
897e1cf2 3867 return ret;
b481de9c
ZY		 3868}
3869
5b9f8cd3 3870static void __exit iwl_exit(void)
b481de9c 3871{
48d1a211 3872 iwl_pci_unregister_driver();
e227ceac 3873 iwlagn_rate_control_unregister();
b481de9c
ZY		 3874}
3875
5b9f8cd3
EG		 3876module_exit(iwl_exit);
3877module_init(iwl_init);
a562a9dd
RC		 3878
3879#ifdef CONFIG_IWLWIFI_DEBUG
48f20d35
EG		 3880module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3881 S_IRUGO | S_IWUSR);
a562a9dd
RC		 3882MODULE_PARM_DESC(debug, "debug output mask");
3883#endif
3884
2b068618
WYG		 3885module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3886MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2b068618
WYG		 3887module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3888MODULE_PARM_DESC(queues_num, "number of hw queues.");
2b068618
WYG		 3889module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3890MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
2b068618
WYG		 3891module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3892 int, S_IRUGO);
3893MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2b068618
WYG		 3894module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3895MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
dd7a2509 3896
48f20d35
EG		 3897module_param_named(ucode_alternative,
3898 iwlagn_mod_params.wanted_ucode_alternative,
3899 int, S_IRUGO);
dd7a2509
JB		 3900MODULE_PARM_DESC(ucode_alternative,
3901 "specify ucode alternative to use from ucode file");
bee008b7 3902
48f20d35
EG		 3903module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3904 int, S_IRUGO);
bee008b7
WYG		 3905MODULE_PARM_DESC(antenna_coupling,
3906 "specify antenna coupling in dB (defualt: 0 dB)");
f37837c9 3907
48f20d35
EG		 3908module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3909 bool, S_IRUGO);
9f28ebc3
WYG		 3910MODULE_PARM_DESC(bt_ch_inhibition,
3911 "Disable BT channel inhibition (default: enable)");
b7977ffa
SG		 3912
3913module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3914MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3915
3916module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3917MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
b60eec9b 3918
300d0834
WYG		 3919module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3920MODULE_PARM_DESC(wd_disable,
3921 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3922
b60eec9b
WYG		 3923/*
3924 * set bt_coex_active to true, uCode will do kill/defer
3925 * every time the priority line is asserted (BT is sending signals on the
3926 * priority line in the PCIx).
3927 * set bt_coex_active to false, uCode will ignore the BT activity and
3928 * perform the normal operation
3929 *
3930 * User might experience transmit issue on some platform due to WiFi/BT
3931 * co-exist problem. The possible behaviors are:
3932 * Able to scan and finding all the available AP
3933 * Not able to associate with any AP
3934 * On those platforms, WiFi communication can be restored by set
3935 * "bt_coex_active" module parameter to "false"
3936 *
3937 * default: bt_coex_active = true (BT_COEX_ENABLE)
3938 */
3939module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3940 bool, S_IRUGO);
3941MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
6b0184c4
WYG		 3942
3943module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3944MODULE_PARM_DESC(led_mode, "0=system default, "
3945 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3f1e5f4a 3946
0172b029
WYG		 3947module_param_named(power_save, iwlagn_mod_params.power_save,
3948 bool, S_IRUGO);
3949MODULE_PARM_DESC(power_save,
3950 "enable WiFi power management (default: disable)");
3951
f7538168
WYG		 3952module_param_named(power_level, iwlagn_mod_params.power_level,
3953 int, S_IRUGO);
3954MODULE_PARM_DESC(power_level,
3955 "default power save level (range from 1 - 5, default: 1)");
3956
3f1e5f4a
WYG		 3957/*
3958 * For now, keep using power level 1 instead of automatically
3959 * adjusting ...
3960 */
3961module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3962 bool, S_IRUGO);
3963MODULE_PARM_DESC(no_sleep_autoadjust,
3964 "don't automatically adjust sleep level "
3965 "according to maximum network latency (default: true)");
Linux kernel - Deliverables
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