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iwlagn: probe would crash with DEBUG_SHIRQ
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob4b666b7dfe605a177d3156340ff0476032c50fa7
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-agn-calib.h"
54 #include "iwl-agn.h"
55 #include "iwl-bus.h"
56 #include "iwl-trans.h"
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /*
65 * module name, copyright, version, etc.
66 */
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #define DRV_VERSION IWLWIFI_VERSION VD
76
77
78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
79 MODULE_VERSION(DRV_VERSION);
80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
81 MODULE_LICENSE("GPL");
82
83 static int iwlagn_ant_coupling;
84 static bool iwlagn_bt_ch_announce = 1;
85
86 void iwl_update_chain_flags(struct iwl_priv *priv)
87 {
88 struct iwl_rxon_context *ctx;
89
90 for_each_context(priv, ctx) {
91 iwlagn_set_rxon_chain(priv, ctx);
92 if (ctx->active.rx_chain != ctx->staging.rx_chain)
93 iwlagn_commit_rxon(priv, ctx);
94 }
95 }
96
97 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
98 static void iwl_set_beacon_tim(struct iwl_priv *priv,
99 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
100 u8 *beacon, u32 frame_size)
101 {
102 u16 tim_idx;
103 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
104
105 /*
106 * The index is relative to frame start but we start looking at the
107 * variable-length part of the beacon.
108 */
109 tim_idx = mgmt->u.beacon.variable - beacon;
110
111 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
112 while ((tim_idx < (frame_size - 2)) &&
113 (beacon[tim_idx] != WLAN_EID_TIM))
114 tim_idx += beacon[tim_idx+1] + 2;
115
116 /* If TIM field was found, set variables */
117 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
118 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
119 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
120 } else
121 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
122 }
123
124 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
125 {
126 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
127 struct iwl_host_cmd cmd = {
128 .id = REPLY_TX_BEACON,
129 .flags = CMD_SYNC,
130 };
131 struct ieee80211_tx_info *info;
132 u32 frame_size;
133 u32 rate_flags;
134 u32 rate;
135
136 /*
137 * We have to set up the TX command, the TX Beacon command, and the
138 * beacon contents.
139 */
140
141 lockdep_assert_held(&priv->mutex);
142
143 if (!priv->beacon_ctx) {
144 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
145 return 0;
146 }
147
148 if (WARN_ON(!priv->beacon_skb))
149 return -EINVAL;
150
151 /* Allocate beacon command */
152 if (!priv->beacon_cmd)
153 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
154 tx_beacon_cmd = priv->beacon_cmd;
155 if (!tx_beacon_cmd)
156 return -ENOMEM;
157
158 frame_size = priv->beacon_skb->len;
159
160 /* Set up TX command fields */
161 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
162 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
163 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
164 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
165 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
166
167 /* Set up TX beacon command fields */
168 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
169 frame_size);
170
171 /* Set up packet rate and flags */
172 info = IEEE80211_SKB_CB(priv->beacon_skb);
173
174 /*
175 * Let's set up the rate at least somewhat correctly;
176 * it will currently not actually be used by the uCode,
177 * it uses the broadcast station's rate instead.
178 */
179 if (info->control.rates[0].idx < 0 ||
180 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
181 rate = 0;
182 else
183 rate = info->control.rates[0].idx;
184
185 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
186 priv->hw_params.valid_tx_ant);
187 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
188
189 /* In mac80211, rates for 5 GHz start at 0 */
190 if (info->band == IEEE80211_BAND_5GHZ)
191 rate += IWL_FIRST_OFDM_RATE;
192 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
193 rate_flags |= RATE_MCS_CCK_MSK;
194
195 tx_beacon_cmd->tx.rate_n_flags =
196 iwl_hw_set_rate_n_flags(rate, rate_flags);
197
198 /* Submit command */
199 cmd.len[0] = sizeof(*tx_beacon_cmd);
200 cmd.data[0] = tx_beacon_cmd;
201 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
202 cmd.len[1] = frame_size;
203 cmd.data[1] = priv->beacon_skb->data;
204 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
205
206 return trans_send_cmd(&priv->trans, &cmd);
207 }
208
209 static void iwl_bg_beacon_update(struct work_struct *work)
210 {
211 struct iwl_priv *priv =
212 container_of(work, struct iwl_priv, beacon_update);
213 struct sk_buff *beacon;
214
215 mutex_lock(&priv->mutex);
216 if (!priv->beacon_ctx) {
217 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
218 goto out;
219 }
220
221 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
222 /*
223 * The ucode will send beacon notifications even in
224 * IBSS mode, but we don't want to process them. But
225 * we need to defer the type check to here due to
226 * requiring locking around the beacon_ctx access.
227 */
228 goto out;
229 }
230
231 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
232 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
233 if (!beacon) {
234 IWL_ERR(priv, "update beacon failed -- keeping old\n");
235 goto out;
236 }
237
238 /* new beacon skb is allocated every time; dispose previous.*/
239 dev_kfree_skb(priv->beacon_skb);
240
241 priv->beacon_skb = beacon;
242
243 iwlagn_send_beacon_cmd(priv);
244 out:
245 mutex_unlock(&priv->mutex);
246 }
247
248 static void iwl_bg_bt_runtime_config(struct work_struct *work)
249 {
250 struct iwl_priv *priv =
251 container_of(work, struct iwl_priv, bt_runtime_config);
252
253 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
254 return;
255
256 /* dont send host command if rf-kill is on */
257 if (!iwl_is_ready_rf(priv))
258 return;
259 iwlagn_send_advance_bt_config(priv);
260 }
261
262 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
263 {
264 struct iwl_priv *priv =
265 container_of(work, struct iwl_priv, bt_full_concurrency);
266 struct iwl_rxon_context *ctx;
267
268 mutex_lock(&priv->mutex);
269
270 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
271 goto out;
272
273 /* dont send host command if rf-kill is on */
274 if (!iwl_is_ready_rf(priv))
275 goto out;
276
277 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
278 priv->bt_full_concurrent ?
279 "full concurrency" : "3-wire");
280
281 /*
282 * LQ & RXON updated cmds must be sent before BT Config cmd
283 * to avoid 3-wire collisions
284 */
285 for_each_context(priv, ctx) {
286 iwlagn_set_rxon_chain(priv, ctx);
287 iwlagn_commit_rxon(priv, ctx);
288 }
289
290 iwlagn_send_advance_bt_config(priv);
291 out:
292 mutex_unlock(&priv->mutex);
293 }
294
295 /**
296 * iwl_bg_statistics_periodic - Timer callback to queue statistics
297 *
298 * This callback is provided in order to send a statistics request.
299 *
300 * This timer function is continually reset to execute within
301 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
302 * was received. We need to ensure we receive the statistics in order
303 * to update the temperature used for calibrating the TXPOWER.
304 */
305 static void iwl_bg_statistics_periodic(unsigned long data)
306 {
307 struct iwl_priv *priv = (struct iwl_priv *)data;
308
309 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
310 return;
311
312 /* dont send host command if rf-kill is on */
313 if (!iwl_is_ready_rf(priv))
314 return;
315
316 iwl_send_statistics_request(priv, CMD_ASYNC, false);
317 }
318
319
320 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
321 u32 start_idx, u32 num_events,
322 u32 mode)
323 {
324 u32 i;
325 u32 ptr; /* SRAM byte address of log data */
326 u32 ev, time, data; /* event log data */
327 unsigned long reg_flags;
328
329 if (mode == 0)
330 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
331 else
332 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
333
334 /* Make sure device is powered up for SRAM reads */
335 spin_lock_irqsave(&priv->reg_lock, reg_flags);
336 if (iwl_grab_nic_access(priv)) {
337 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
338 return;
339 }
340
341 /* Set starting address; reads will auto-increment */
342 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
343 rmb();
344
345 /*
346 * "time" is actually "data" for mode 0 (no timestamp).
347 * place event id # at far right for easier visual parsing.
348 */
349 for (i = 0; i < num_events; i++) {
350 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
351 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
352 if (mode == 0) {
353 trace_iwlwifi_dev_ucode_cont_event(priv,
354 0, time, ev);
355 } else {
356 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
357 trace_iwlwifi_dev_ucode_cont_event(priv,
358 time, data, ev);
359 }
360 }
361 /* Allow device to power down */
362 iwl_release_nic_access(priv);
363 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
364 }
365
366 static void iwl_continuous_event_trace(struct iwl_priv *priv)
367 {
368 u32 capacity; /* event log capacity in # entries */
369 u32 base; /* SRAM byte address of event log header */
370 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
371 u32 num_wraps; /* # times uCode wrapped to top of log */
372 u32 next_entry; /* index of next entry to be written by uCode */
373
374 base = priv->device_pointers.error_event_table;
375 if (iwlagn_hw_valid_rtc_data_addr(base)) {
376 capacity = iwl_read_targ_mem(priv, base);
377 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
378 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
379 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
380 } else
381 return;
382
383 if (num_wraps == priv->event_log.num_wraps) {
384 iwl_print_cont_event_trace(priv,
385 base, priv->event_log.next_entry,
386 next_entry - priv->event_log.next_entry,
387 mode);
388 priv->event_log.non_wraps_count++;
389 } else {
390 if ((num_wraps - priv->event_log.num_wraps) > 1)
391 priv->event_log.wraps_more_count++;
392 else
393 priv->event_log.wraps_once_count++;
394 trace_iwlwifi_dev_ucode_wrap_event(priv,
395 num_wraps - priv->event_log.num_wraps,
396 next_entry, priv->event_log.next_entry);
397 if (next_entry < priv->event_log.next_entry) {
398 iwl_print_cont_event_trace(priv, base,
399 priv->event_log.next_entry,
400 capacity - priv->event_log.next_entry,
401 mode);
402
403 iwl_print_cont_event_trace(priv, base, 0,
404 next_entry, mode);
405 } else {
406 iwl_print_cont_event_trace(priv, base,
407 next_entry, capacity - next_entry,
408 mode);
409
410 iwl_print_cont_event_trace(priv, base, 0,
411 next_entry, mode);
412 }
413 }
414 priv->event_log.num_wraps = num_wraps;
415 priv->event_log.next_entry = next_entry;
416 }
417
418 /**
419 * iwl_bg_ucode_trace - Timer callback to log ucode event
420 *
421 * The timer is continually set to execute every
422 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
423 * this function is to perform continuous uCode event logging operation
424 * if enabled
425 */
426 static void iwl_bg_ucode_trace(unsigned long data)
427 {
428 struct iwl_priv *priv = (struct iwl_priv *)data;
429
430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
431 return;
432
433 if (priv->event_log.ucode_trace) {
434 iwl_continuous_event_trace(priv);
435 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
436 mod_timer(&priv->ucode_trace,
437 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
438 }
439 }
440
441 static void iwl_bg_tx_flush(struct work_struct *work)
442 {
443 struct iwl_priv *priv =
444 container_of(work, struct iwl_priv, tx_flush);
445
446 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
447 return;
448
449 /* do nothing if rf-kill is on */
450 if (!iwl_is_ready_rf(priv))
451 return;
452
453 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
454 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
455 }
456
457 /*****************************************************************************
458 *
459 * sysfs attributes
460 *
461 *****************************************************************************/
462
463 #ifdef CONFIG_IWLWIFI_DEBUG
464
465 /*
466 * The following adds a new attribute to the sysfs representation
467 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
468 * used for controlling the debug level.
469 *
470 * See the level definitions in iwl for details.
471 *
472 * The debug_level being managed using sysfs below is a per device debug
473 * level that is used instead of the global debug level if it (the per
474 * device debug level) is set.
475 */
476 static ssize_t show_debug_level(struct device *d,
477 struct device_attribute *attr, char *buf)
478 {
479 struct iwl_priv *priv = dev_get_drvdata(d);
480 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
481 }
482 static ssize_t store_debug_level(struct device *d,
483 struct device_attribute *attr,
484 const char *buf, size_t count)
485 {
486 struct iwl_priv *priv = dev_get_drvdata(d);
487 unsigned long val;
488 int ret;
489
490 ret = strict_strtoul(buf, 0, &val);
491 if (ret)
492 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
493 else {
494 priv->debug_level = val;
495 if (iwl_alloc_traffic_mem(priv))
496 IWL_ERR(priv,
497 "Not enough memory to generate traffic log\n");
498 }
499 return strnlen(buf, count);
500 }
501
502 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
503 show_debug_level, store_debug_level);
504
505
506 #endif /* CONFIG_IWLWIFI_DEBUG */
507
508
509 static ssize_t show_temperature(struct device *d,
510 struct device_attribute *attr, char *buf)
511 {
512 struct iwl_priv *priv = dev_get_drvdata(d);
513
514 if (!iwl_is_alive(priv))
515 return -EAGAIN;
516
517 return sprintf(buf, "%d\n", priv->temperature);
518 }
519
520 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
521
522 static ssize_t show_tx_power(struct device *d,
523 struct device_attribute *attr, char *buf)
524 {
525 struct iwl_priv *priv = dev_get_drvdata(d);
526
527 if (!iwl_is_ready_rf(priv))
528 return sprintf(buf, "off\n");
529 else
530 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
531 }
532
533 static ssize_t store_tx_power(struct device *d,
534 struct device_attribute *attr,
535 const char *buf, size_t count)
536 {
537 struct iwl_priv *priv = dev_get_drvdata(d);
538 unsigned long val;
539 int ret;
540
541 ret = strict_strtoul(buf, 10, &val);
542 if (ret)
543 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
544 else {
545 ret = iwl_set_tx_power(priv, val, false);
546 if (ret)
547 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
548 ret);
549 else
550 ret = count;
551 }
552 return ret;
553 }
554
555 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
556
557 static struct attribute *iwl_sysfs_entries[] = {
558 &dev_attr_temperature.attr,
559 &dev_attr_tx_power.attr,
560 #ifdef CONFIG_IWLWIFI_DEBUG
561 &dev_attr_debug_level.attr,
562 #endif
563 NULL
564 };
565
566 static struct attribute_group iwl_attribute_group = {
567 .name = NULL, /* put in device directory */
568 .attrs = iwl_sysfs_entries,
569 };
570
571 /******************************************************************************
572 *
573 * uCode download functions
574 *
575 ******************************************************************************/
576
577 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
578 {
579 if (desc->v_addr)
580 dma_free_coherent(priv->bus->dev, desc->len,
581 desc->v_addr, desc->p_addr);
582 desc->v_addr = NULL;
583 desc->len = 0;
584 }
585
586 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
587 {
588 iwl_free_fw_desc(priv, &img->code);
589 iwl_free_fw_desc(priv, &img->data);
590 }
591
592 static void iwl_dealloc_ucode(struct iwl_priv *priv)
593 {
594 iwl_free_fw_img(priv, &priv->ucode_rt);
595 iwl_free_fw_img(priv, &priv->ucode_init);
596 iwl_free_fw_img(priv, &priv->ucode_wowlan);
597 }
598
599 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
600 const void *data, size_t len)
601 {
602 if (!len) {
603 desc->v_addr = NULL;
604 return -EINVAL;
605 }
606
607 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
608 &desc->p_addr, GFP_KERNEL);
609 if (!desc->v_addr)
610 return -ENOMEM;
611
612 desc->len = len;
613 memcpy(desc->v_addr, data, len);
614 return 0;
615 }
616
617 struct iwlagn_ucode_capabilities {
618 u32 max_probe_length;
619 u32 standard_phy_calibration_size;
620 u32 flags;
621 };
622
623 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
624 static int iwl_mac_setup_register(struct iwl_priv *priv,
625 struct iwlagn_ucode_capabilities *capa);
626
627 #define UCODE_EXPERIMENTAL_INDEX 100
628 #define UCODE_EXPERIMENTAL_TAG "exp"
629
630 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
631 {
632 const char *name_pre = priv->cfg->fw_name_pre;
633 char tag[8];
634
635 if (first) {
636 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
637 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
638 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
639 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
640 #endif
641 priv->fw_index = priv->cfg->ucode_api_max;
642 sprintf(tag, "%d", priv->fw_index);
643 } else {
644 priv->fw_index--;
645 sprintf(tag, "%d", priv->fw_index);
646 }
647
648 if (priv->fw_index < priv->cfg->ucode_api_min) {
649 IWL_ERR(priv, "no suitable firmware found!\n");
650 return -ENOENT;
651 }
652
653 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
654
655 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
656 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
657 ? "EXPERIMENTAL " : "",
658 priv->firmware_name);
659
660 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
661 priv->bus->dev,
662 GFP_KERNEL, priv, iwl_ucode_callback);
663 }
664
665 struct iwlagn_firmware_pieces {
666 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
667 size_t inst_size, data_size, init_size, init_data_size,
668 wowlan_inst_size, wowlan_data_size;
669
670 u32 build;
671
672 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
673 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
674 };
675
676 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
677 const struct firmware *ucode_raw,
678 struct iwlagn_firmware_pieces *pieces)
679 {
680 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
681 u32 api_ver, hdr_size;
682 const u8 *src;
683
684 priv->ucode_ver = le32_to_cpu(ucode->ver);
685 api_ver = IWL_UCODE_API(priv->ucode_ver);
686
687 switch (api_ver) {
688 default:
689 hdr_size = 28;
690 if (ucode_raw->size < hdr_size) {
691 IWL_ERR(priv, "File size too small!\n");
692 return -EINVAL;
693 }
694 pieces->build = le32_to_cpu(ucode->u.v2.build);
695 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
696 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
697 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
698 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
699 src = ucode->u.v2.data;
700 break;
701 case 0:
702 case 1:
703 case 2:
704 hdr_size = 24;
705 if (ucode_raw->size < hdr_size) {
706 IWL_ERR(priv, "File size too small!\n");
707 return -EINVAL;
708 }
709 pieces->build = 0;
710 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
711 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
712 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
713 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
714 src = ucode->u.v1.data;
715 break;
716 }
717
718 /* Verify size of file vs. image size info in file's header */
719 if (ucode_raw->size != hdr_size + pieces->inst_size +
720 pieces->data_size + pieces->init_size +
721 pieces->init_data_size) {
722
723 IWL_ERR(priv,
724 "uCode file size %d does not match expected size\n",
725 (int)ucode_raw->size);
726 return -EINVAL;
727 }
728
729 pieces->inst = src;
730 src += pieces->inst_size;
731 pieces->data = src;
732 src += pieces->data_size;
733 pieces->init = src;
734 src += pieces->init_size;
735 pieces->init_data = src;
736 src += pieces->init_data_size;
737
738 return 0;
739 }
740
741 static int iwlagn_wanted_ucode_alternative = 1;
742
743 static int iwlagn_load_firmware(struct iwl_priv *priv,
744 const struct firmware *ucode_raw,
745 struct iwlagn_firmware_pieces *pieces,
746 struct iwlagn_ucode_capabilities *capa)
747 {
748 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
749 struct iwl_ucode_tlv *tlv;
750 size_t len = ucode_raw->size;
751 const u8 *data;
752 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
753 u64 alternatives;
754 u32 tlv_len;
755 enum iwl_ucode_tlv_type tlv_type;
756 const u8 *tlv_data;
757
758 if (len < sizeof(*ucode)) {
759 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
760 return -EINVAL;
761 }
762
763 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
764 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
765 le32_to_cpu(ucode->magic));
766 return -EINVAL;
767 }
768
769 /*
770 * Check which alternatives are present, and "downgrade"
771 * when the chosen alternative is not present, warning
772 * the user when that happens. Some files may not have
773 * any alternatives, so don't warn in that case.
774 */
775 alternatives = le64_to_cpu(ucode->alternatives);
776 tmp = wanted_alternative;
777 if (wanted_alternative > 63)
778 wanted_alternative = 63;
779 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
780 wanted_alternative--;
781 if (wanted_alternative && wanted_alternative != tmp)
782 IWL_WARN(priv,
783 "uCode alternative %d not available, choosing %d\n",
784 tmp, wanted_alternative);
785
786 priv->ucode_ver = le32_to_cpu(ucode->ver);
787 pieces->build = le32_to_cpu(ucode->build);
788 data = ucode->data;
789
790 len -= sizeof(*ucode);
791
792 while (len >= sizeof(*tlv)) {
793 u16 tlv_alt;
794
795 len -= sizeof(*tlv);
796 tlv = (void *)data;
797
798 tlv_len = le32_to_cpu(tlv->length);
799 tlv_type = le16_to_cpu(tlv->type);
800 tlv_alt = le16_to_cpu(tlv->alternative);
801 tlv_data = tlv->data;
802
803 if (len < tlv_len) {
804 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
805 len, tlv_len);
806 return -EINVAL;
807 }
808 len -= ALIGN(tlv_len, 4);
809 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
810
811 /*
812 * Alternative 0 is always valid.
813 *
814 * Skip alternative TLVs that are not selected.
815 */
816 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
817 continue;
818
819 switch (tlv_type) {
820 case IWL_UCODE_TLV_INST:
821 pieces->inst = tlv_data;
822 pieces->inst_size = tlv_len;
823 break;
824 case IWL_UCODE_TLV_DATA:
825 pieces->data = tlv_data;
826 pieces->data_size = tlv_len;
827 break;
828 case IWL_UCODE_TLV_INIT:
829 pieces->init = tlv_data;
830 pieces->init_size = tlv_len;
831 break;
832 case IWL_UCODE_TLV_INIT_DATA:
833 pieces->init_data = tlv_data;
834 pieces->init_data_size = tlv_len;
835 break;
836 case IWL_UCODE_TLV_BOOT:
837 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
838 break;
839 case IWL_UCODE_TLV_PROBE_MAX_LEN:
840 if (tlv_len != sizeof(u32))
841 goto invalid_tlv_len;
842 capa->max_probe_length =
843 le32_to_cpup((__le32 *)tlv_data);
844 break;
845 case IWL_UCODE_TLV_PAN:
846 if (tlv_len)
847 goto invalid_tlv_len;
848 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
849 break;
850 case IWL_UCODE_TLV_FLAGS:
851 /* must be at least one u32 */
852 if (tlv_len < sizeof(u32))
853 goto invalid_tlv_len;
854 /* and a proper number of u32s */
855 if (tlv_len % sizeof(u32))
856 goto invalid_tlv_len;
857 /*
858 * This driver only reads the first u32 as
859 * right now no more features are defined,
860 * if that changes then either the driver
861 * will not work with the new firmware, or
862 * it'll not take advantage of new features.
863 */
864 capa->flags = le32_to_cpup((__le32 *)tlv_data);
865 break;
866 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
867 if (tlv_len != sizeof(u32))
868 goto invalid_tlv_len;
869 pieces->init_evtlog_ptr =
870 le32_to_cpup((__le32 *)tlv_data);
871 break;
872 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
873 if (tlv_len != sizeof(u32))
874 goto invalid_tlv_len;
875 pieces->init_evtlog_size =
876 le32_to_cpup((__le32 *)tlv_data);
877 break;
878 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
879 if (tlv_len != sizeof(u32))
880 goto invalid_tlv_len;
881 pieces->init_errlog_ptr =
882 le32_to_cpup((__le32 *)tlv_data);
883 break;
884 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
885 if (tlv_len != sizeof(u32))
886 goto invalid_tlv_len;
887 pieces->inst_evtlog_ptr =
888 le32_to_cpup((__le32 *)tlv_data);
889 break;
890 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
891 if (tlv_len != sizeof(u32))
892 goto invalid_tlv_len;
893 pieces->inst_evtlog_size =
894 le32_to_cpup((__le32 *)tlv_data);
895 break;
896 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
897 if (tlv_len != sizeof(u32))
898 goto invalid_tlv_len;
899 pieces->inst_errlog_ptr =
900 le32_to_cpup((__le32 *)tlv_data);
901 break;
902 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
903 if (tlv_len)
904 goto invalid_tlv_len;
905 priv->enhance_sensitivity_table = true;
906 break;
907 case IWL_UCODE_TLV_WOWLAN_INST:
908 pieces->wowlan_inst = tlv_data;
909 pieces->wowlan_inst_size = tlv_len;
910 break;
911 case IWL_UCODE_TLV_WOWLAN_DATA:
912 pieces->wowlan_data = tlv_data;
913 pieces->wowlan_data_size = tlv_len;
914 break;
915 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
916 if (tlv_len != sizeof(u32))
917 goto invalid_tlv_len;
918 capa->standard_phy_calibration_size =
919 le32_to_cpup((__le32 *)tlv_data);
920 break;
921 default:
922 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
923 break;
924 }
925 }
926
927 if (len) {
928 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
929 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
930 return -EINVAL;
931 }
932
933 return 0;
934
935 invalid_tlv_len:
936 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
937 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
938
939 return -EINVAL;
940 }
941
942 /**
943 * iwl_ucode_callback - callback when firmware was loaded
944 *
945 * If loaded successfully, copies the firmware into buffers
946 * for the card to fetch (via DMA).
947 */
948 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
949 {
950 struct iwl_priv *priv = context;
951 struct iwl_ucode_header *ucode;
952 int err;
953 struct iwlagn_firmware_pieces pieces;
954 const unsigned int api_max = priv->cfg->ucode_api_max;
955 const unsigned int api_min = priv->cfg->ucode_api_min;
956 u32 api_ver;
957 char buildstr[25];
958 u32 build;
959 struct iwlagn_ucode_capabilities ucode_capa = {
960 .max_probe_length = 200,
961 .standard_phy_calibration_size =
962 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
963 };
964
965 memset(&pieces, 0, sizeof(pieces));
966
967 if (!ucode_raw) {
968 if (priv->fw_index <= priv->cfg->ucode_api_max)
969 IWL_ERR(priv,
970 "request for firmware file '%s' failed.\n",
971 priv->firmware_name);
972 goto try_again;
973 }
974
975 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
976 priv->firmware_name, ucode_raw->size);
977
978 /* Make sure that we got at least the API version number */
979 if (ucode_raw->size < 4) {
980 IWL_ERR(priv, "File size way too small!\n");
981 goto try_again;
982 }
983
984 /* Data from ucode file: header followed by uCode images */
985 ucode = (struct iwl_ucode_header *)ucode_raw->data;
986
987 if (ucode->ver)
988 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
989 else
990 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
991 &ucode_capa);
992
993 if (err)
994 goto try_again;
995
996 api_ver = IWL_UCODE_API(priv->ucode_ver);
997 build = pieces.build;
998
999 /*
1000 * api_ver should match the api version forming part of the
1001 * firmware filename ... but we don't check for that and only rely
1002 * on the API version read from firmware header from here on forward
1003 */
1004 /* no api version check required for experimental uCode */
1005 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1006 if (api_ver < api_min || api_ver > api_max) {
1007 IWL_ERR(priv,
1008 "Driver unable to support your firmware API. "
1009 "Driver supports v%u, firmware is v%u.\n",
1010 api_max, api_ver);
1011 goto try_again;
1012 }
1013
1014 if (api_ver != api_max)
1015 IWL_ERR(priv,
1016 "Firmware has old API version. Expected v%u, "
1017 "got v%u. New firmware can be obtained "
1018 "from http://www.intellinuxwireless.org.\n",
1019 api_max, api_ver);
1020 }
1021
1022 if (build)
1023 sprintf(buildstr, " build %u%s", build,
1024 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1025 ? " (EXP)" : "");
1026 else
1027 buildstr[0] = '\0';
1028
1029 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1030 IWL_UCODE_MAJOR(priv->ucode_ver),
1031 IWL_UCODE_MINOR(priv->ucode_ver),
1032 IWL_UCODE_API(priv->ucode_ver),
1033 IWL_UCODE_SERIAL(priv->ucode_ver),
1034 buildstr);
1035
1036 snprintf(priv->hw->wiphy->fw_version,
1037 sizeof(priv->hw->wiphy->fw_version),
1038 "%u.%u.%u.%u%s",
1039 IWL_UCODE_MAJOR(priv->ucode_ver),
1040 IWL_UCODE_MINOR(priv->ucode_ver),
1041 IWL_UCODE_API(priv->ucode_ver),
1042 IWL_UCODE_SERIAL(priv->ucode_ver),
1043 buildstr);
1044
1045 /*
1046 * For any of the failures below (before allocating pci memory)
1047 * we will try to load a version with a smaller API -- maybe the
1048 * user just got a corrupted version of the latest API.
1049 */
1050
1051 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1052 priv->ucode_ver);
1053 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1054 pieces.inst_size);
1055 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1056 pieces.data_size);
1057 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1058 pieces.init_size);
1059 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1060 pieces.init_data_size);
1061
1062 /* Verify that uCode images will fit in card's SRAM */
1063 if (pieces.inst_size > priv->hw_params.max_inst_size) {
1064 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1065 pieces.inst_size);
1066 goto try_again;
1067 }
1068
1069 if (pieces.data_size > priv->hw_params.max_data_size) {
1070 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1071 pieces.data_size);
1072 goto try_again;
1073 }
1074
1075 if (pieces.init_size > priv->hw_params.max_inst_size) {
1076 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1077 pieces.init_size);
1078 goto try_again;
1079 }
1080
1081 if (pieces.init_data_size > priv->hw_params.max_data_size) {
1082 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1083 pieces.init_data_size);
1084 goto try_again;
1085 }
1086
1087 /* Allocate ucode buffers for card's bus-master loading ... */
1088
1089 /* Runtime instructions and 2 copies of data:
1090 * 1) unmodified from disk
1091 * 2) backup cache for save/restore during power-downs */
1092 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1093 pieces.inst, pieces.inst_size))
1094 goto err_pci_alloc;
1095 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1096 pieces.data, pieces.data_size))
1097 goto err_pci_alloc;
1098
1099 /* Initialization instructions and data */
1100 if (pieces.init_size && pieces.init_data_size) {
1101 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1102 pieces.init, pieces.init_size))
1103 goto err_pci_alloc;
1104 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1105 pieces.init_data, pieces.init_data_size))
1106 goto err_pci_alloc;
1107 }
1108
1109 /* WoWLAN instructions and data */
1110 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1111 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1112 pieces.wowlan_inst,
1113 pieces.wowlan_inst_size))
1114 goto err_pci_alloc;
1115 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1116 pieces.wowlan_data,
1117 pieces.wowlan_data_size))
1118 goto err_pci_alloc;
1119 }
1120
1121 /* Now that we can no longer fail, copy information */
1122
1123 /*
1124 * The (size - 16) / 12 formula is based on the information recorded
1125 * for each event, which is of mode 1 (including timestamp) for all
1126 * new microcodes that include this information.
1127 */
1128 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1129 if (pieces.init_evtlog_size)
1130 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1131 else
1132 priv->init_evtlog_size =
1133 priv->cfg->base_params->max_event_log_size;
1134 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1135 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1136 if (pieces.inst_evtlog_size)
1137 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1138 else
1139 priv->inst_evtlog_size =
1140 priv->cfg->base_params->max_event_log_size;
1141 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1142
1143 priv->new_scan_threshold_behaviour =
1144 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1145
1146 if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1147 (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1148 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1149 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1150 } else
1151 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1152
1153 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1154 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1155 else
1156 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1157
1158 /*
1159 * figure out the offset of chain noise reset and gain commands
1160 * base on the size of standard phy calibration commands table size
1161 */
1162 if (ucode_capa.standard_phy_calibration_size >
1163 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1164 ucode_capa.standard_phy_calibration_size =
1165 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1166
1167 priv->phy_calib_chain_noise_reset_cmd =
1168 ucode_capa.standard_phy_calibration_size;
1169 priv->phy_calib_chain_noise_gain_cmd =
1170 ucode_capa.standard_phy_calibration_size + 1;
1171
1172 /**************************************************
1173 * This is still part of probe() in a sense...
1174 *
1175 * 9. Setup and register with mac80211 and debugfs
1176 **************************************************/
1177 err = iwl_mac_setup_register(priv, &ucode_capa);
1178 if (err)
1179 goto out_unbind;
1180
1181 err = iwl_dbgfs_register(priv, DRV_NAME);
1182 if (err)
1183 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1184
1185 err = sysfs_create_group(&(priv->bus->dev->kobj),
1186 &iwl_attribute_group);
1187 if (err) {
1188 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1189 goto out_unbind;
1190 }
1191
1192 /* We have our copies now, allow OS release its copies */
1193 release_firmware(ucode_raw);
1194 complete(&priv->firmware_loading_complete);
1195 return;
1196
1197 try_again:
1198 /* try next, if any */
1199 if (iwl_request_firmware(priv, false))
1200 goto out_unbind;
1201 release_firmware(ucode_raw);
1202 return;
1203
1204 err_pci_alloc:
1205 IWL_ERR(priv, "failed to allocate pci memory\n");
1206 iwl_dealloc_ucode(priv);
1207 out_unbind:
1208 complete(&priv->firmware_loading_complete);
1209 device_release_driver(priv->bus->dev);
1210 release_firmware(ucode_raw);
1211 }
1212
1213 static const char * const desc_lookup_text[] = {
1214 "OK",
1215 "FAIL",
1216 "BAD_PARAM",
1217 "BAD_CHECKSUM",
1218 "NMI_INTERRUPT_WDG",
1219 "SYSASSERT",
1220 "FATAL_ERROR",
1221 "BAD_COMMAND",
1222 "HW_ERROR_TUNE_LOCK",
1223 "HW_ERROR_TEMPERATURE",
1224 "ILLEGAL_CHAN_FREQ",
1225 "VCC_NOT_STABLE",
1226 "FH_ERROR",
1227 "NMI_INTERRUPT_HOST",
1228 "NMI_INTERRUPT_ACTION_PT",
1229 "NMI_INTERRUPT_UNKNOWN",
1230 "UCODE_VERSION_MISMATCH",
1231 "HW_ERROR_ABS_LOCK",
1232 "HW_ERROR_CAL_LOCK_FAIL",
1233 "NMI_INTERRUPT_INST_ACTION_PT",
1234 "NMI_INTERRUPT_DATA_ACTION_PT",
1235 "NMI_TRM_HW_ER",
1236 "NMI_INTERRUPT_TRM",
1237 "NMI_INTERRUPT_BREAK_POINT",
1238 "DEBUG_0",
1239 "DEBUG_1",
1240 "DEBUG_2",
1241 "DEBUG_3",
1242 };
1243
1244 static struct { char *name; u8 num; } advanced_lookup[] = {
1245 { "NMI_INTERRUPT_WDG", 0x34 },
1246 { "SYSASSERT", 0x35 },
1247 { "UCODE_VERSION_MISMATCH", 0x37 },
1248 { "BAD_COMMAND", 0x38 },
1249 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1250 { "FATAL_ERROR", 0x3D },
1251 { "NMI_TRM_HW_ERR", 0x46 },
1252 { "NMI_INTERRUPT_TRM", 0x4C },
1253 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1254 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1255 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1256 { "NMI_INTERRUPT_HOST", 0x66 },
1257 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1258 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1259 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1260 { "ADVANCED_SYSASSERT", 0 },
1261 };
1262
1263 static const char *desc_lookup(u32 num)
1264 {
1265 int i;
1266 int max = ARRAY_SIZE(desc_lookup_text);
1267
1268 if (num < max)
1269 return desc_lookup_text[num];
1270
1271 max = ARRAY_SIZE(advanced_lookup) - 1;
1272 for (i = 0; i < max; i++) {
1273 if (advanced_lookup[i].num == num)
1274 break;
1275 }
1276 return advanced_lookup[i].name;
1277 }
1278
1279 #define ERROR_START_OFFSET (1 * sizeof(u32))
1280 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1281
1282 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1283 {
1284 u32 base;
1285 struct iwl_error_event_table table;
1286
1287 base = priv->device_pointers.error_event_table;
1288 if (priv->ucode_type == IWL_UCODE_INIT) {
1289 if (!base)
1290 base = priv->init_errlog_ptr;
1291 } else {
1292 if (!base)
1293 base = priv->inst_errlog_ptr;
1294 }
1295
1296 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1297 IWL_ERR(priv,
1298 "Not valid error log pointer 0x%08X for %s uCode\n",
1299 base,
1300 (priv->ucode_type == IWL_UCODE_INIT)
1301 ? "Init" : "RT");
1302 return;
1303 }
1304
1305 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1306
1307 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1308 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1309 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1310 priv->status, table.valid);
1311 }
1312
1313 priv->isr_stats.err_code = table.error_id;
1314
1315 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1316 table.data1, table.data2, table.line,
1317 table.blink1, table.blink2, table.ilink1,
1318 table.ilink2, table.bcon_time, table.gp1,
1319 table.gp2, table.gp3, table.ucode_ver,
1320 table.hw_ver, table.brd_ver);
1321 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1322 desc_lookup(table.error_id));
1323 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1324 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1325 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1326 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1327 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1328 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1329 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1330 IWL_ERR(priv, "0x%08X | line\n", table.line);
1331 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1332 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1333 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1334 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1335 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1336 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1337 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1338 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1339 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1340 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1341 }
1342
1343 #define EVENT_START_OFFSET (4 * sizeof(u32))
1344
1345 /**
1346 * iwl_print_event_log - Dump error event log to syslog
1347 *
1348 */
1349 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1350 u32 num_events, u32 mode,
1351 int pos, char **buf, size_t bufsz)
1352 {
1353 u32 i;
1354 u32 base; /* SRAM byte address of event log header */
1355 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1356 u32 ptr; /* SRAM byte address of log data */
1357 u32 ev, time, data; /* event log data */
1358 unsigned long reg_flags;
1359
1360 if (num_events == 0)
1361 return pos;
1362
1363 base = priv->device_pointers.log_event_table;
1364 if (priv->ucode_type == IWL_UCODE_INIT) {
1365 if (!base)
1366 base = priv->init_evtlog_ptr;
1367 } else {
1368 if (!base)
1369 base = priv->inst_evtlog_ptr;
1370 }
1371
1372 if (mode == 0)
1373 event_size = 2 * sizeof(u32);
1374 else
1375 event_size = 3 * sizeof(u32);
1376
1377 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1378
1379 /* Make sure device is powered up for SRAM reads */
1380 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1381 iwl_grab_nic_access(priv);
1382
1383 /* Set starting address; reads will auto-increment */
1384 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1385 rmb();
1386
1387 /* "time" is actually "data" for mode 0 (no timestamp).
1388 * place event id # at far right for easier visual parsing. */
1389 for (i = 0; i < num_events; i++) {
1390 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1391 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1392 if (mode == 0) {
1393 /* data, ev */
1394 if (bufsz) {
1395 pos += scnprintf(*buf + pos, bufsz - pos,
1396 "EVT_LOG:0x%08x:%04u\n",
1397 time, ev);
1398 } else {
1399 trace_iwlwifi_dev_ucode_event(priv, 0,
1400 time, ev);
1401 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1402 time, ev);
1403 }
1404 } else {
1405 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1406 if (bufsz) {
1407 pos += scnprintf(*buf + pos, bufsz - pos,
1408 "EVT_LOGT:%010u:0x%08x:%04u\n",
1409 time, data, ev);
1410 } else {
1411 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1412 time, data, ev);
1413 trace_iwlwifi_dev_ucode_event(priv, time,
1414 data, ev);
1415 }
1416 }
1417 }
1418
1419 /* Allow device to power down */
1420 iwl_release_nic_access(priv);
1421 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1422 return pos;
1423 }
1424
1425 /**
1426 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1427 */
1428 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1429 u32 num_wraps, u32 next_entry,
1430 u32 size, u32 mode,
1431 int pos, char **buf, size_t bufsz)
1432 {
1433 /*
1434 * display the newest DEFAULT_LOG_ENTRIES entries
1435 * i.e the entries just before the next ont that uCode would fill.
1436 */
1437 if (num_wraps) {
1438 if (next_entry < size) {
1439 pos = iwl_print_event_log(priv,
1440 capacity - (size - next_entry),
1441 size - next_entry, mode,
1442 pos, buf, bufsz);
1443 pos = iwl_print_event_log(priv, 0,
1444 next_entry, mode,
1445 pos, buf, bufsz);
1446 } else
1447 pos = iwl_print_event_log(priv, next_entry - size,
1448 size, mode, pos, buf, bufsz);
1449 } else {
1450 if (next_entry < size) {
1451 pos = iwl_print_event_log(priv, 0, next_entry,
1452 mode, pos, buf, bufsz);
1453 } else {
1454 pos = iwl_print_event_log(priv, next_entry - size,
1455 size, mode, pos, buf, bufsz);
1456 }
1457 }
1458 return pos;
1459 }
1460
1461 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1462
1463 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1464 char **buf, bool display)
1465 {
1466 u32 base; /* SRAM byte address of event log header */
1467 u32 capacity; /* event log capacity in # entries */
1468 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1469 u32 num_wraps; /* # times uCode wrapped to top of log */
1470 u32 next_entry; /* index of next entry to be written by uCode */
1471 u32 size; /* # entries that we'll print */
1472 u32 logsize;
1473 int pos = 0;
1474 size_t bufsz = 0;
1475
1476 base = priv->device_pointers.log_event_table;
1477 if (priv->ucode_type == IWL_UCODE_INIT) {
1478 logsize = priv->init_evtlog_size;
1479 if (!base)
1480 base = priv->init_evtlog_ptr;
1481 } else {
1482 logsize = priv->inst_evtlog_size;
1483 if (!base)
1484 base = priv->inst_evtlog_ptr;
1485 }
1486
1487 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1488 IWL_ERR(priv,
1489 "Invalid event log pointer 0x%08X for %s uCode\n",
1490 base,
1491 (priv->ucode_type == IWL_UCODE_INIT)
1492 ? "Init" : "RT");
1493 return -EINVAL;
1494 }
1495
1496 /* event log header */
1497 capacity = iwl_read_targ_mem(priv, base);
1498 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1499 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1500 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1501
1502 if (capacity > logsize) {
1503 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1504 capacity, logsize);
1505 capacity = logsize;
1506 }
1507
1508 if (next_entry > logsize) {
1509 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1510 next_entry, logsize);
1511 next_entry = logsize;
1512 }
1513
1514 size = num_wraps ? capacity : next_entry;
1515
1516 /* bail out if nothing in log */
1517 if (size == 0) {
1518 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1519 return pos;
1520 }
1521
1522 /* enable/disable bt channel inhibition */
1523 priv->bt_ch_announce = iwlagn_bt_ch_announce;
1524
1525 #ifdef CONFIG_IWLWIFI_DEBUG
1526 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1527 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1528 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1529 #else
1530 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1531 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1532 #endif
1533 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1534 size);
1535
1536 #ifdef CONFIG_IWLWIFI_DEBUG
1537 if (display) {
1538 if (full_log)
1539 bufsz = capacity * 48;
1540 else
1541 bufsz = size * 48;
1542 *buf = kmalloc(bufsz, GFP_KERNEL);
1543 if (!*buf)
1544 return -ENOMEM;
1545 }
1546 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1547 /*
1548 * if uCode has wrapped back to top of log,
1549 * start at the oldest entry,
1550 * i.e the next one that uCode would fill.
1551 */
1552 if (num_wraps)
1553 pos = iwl_print_event_log(priv, next_entry,
1554 capacity - next_entry, mode,
1555 pos, buf, bufsz);
1556 /* (then/else) start at top of log */
1557 pos = iwl_print_event_log(priv, 0,
1558 next_entry, mode, pos, buf, bufsz);
1559 } else
1560 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1561 next_entry, size, mode,
1562 pos, buf, bufsz);
1563 #else
1564 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1565 next_entry, size, mode,
1566 pos, buf, bufsz);
1567 #endif
1568 return pos;
1569 }
1570
1571 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1572 {
1573 struct iwl_ct_kill_config cmd;
1574 struct iwl_ct_kill_throttling_config adv_cmd;
1575 unsigned long flags;
1576 int ret = 0;
1577
1578 spin_lock_irqsave(&priv->lock, flags);
1579 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1580 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1581 spin_unlock_irqrestore(&priv->lock, flags);
1582 priv->thermal_throttle.ct_kill_toggle = false;
1583
1584 if (priv->cfg->base_params->support_ct_kill_exit) {
1585 adv_cmd.critical_temperature_enter =
1586 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1587 adv_cmd.critical_temperature_exit =
1588 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1589
1590 ret = trans_send_cmd_pdu(&priv->trans,
1591 REPLY_CT_KILL_CONFIG_CMD,
1592 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1593 if (ret)
1594 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1595 else
1596 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1597 "succeeded, "
1598 "critical temperature enter is %d,"
1599 "exit is %d\n",
1600 priv->hw_params.ct_kill_threshold,
1601 priv->hw_params.ct_kill_exit_threshold);
1602 } else {
1603 cmd.critical_temperature_R =
1604 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1605
1606 ret = trans_send_cmd_pdu(&priv->trans,
1607 REPLY_CT_KILL_CONFIG_CMD,
1608 CMD_SYNC, sizeof(cmd), &cmd);
1609 if (ret)
1610 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1611 else
1612 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1613 "succeeded, "
1614 "critical temperature is %d\n",
1615 priv->hw_params.ct_kill_threshold);
1616 }
1617 }
1618
1619 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1620 {
1621 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1622 struct iwl_host_cmd cmd = {
1623 .id = CALIBRATION_CFG_CMD,
1624 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1625 .data = { &calib_cfg_cmd, },
1626 };
1627
1628 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1629 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1630 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1631
1632 return trans_send_cmd(&priv->trans, &cmd);
1633 }
1634
1635
1636 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1637 {
1638 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1639 .valid = cpu_to_le32(valid_tx_ant),
1640 };
1641
1642 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1643 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1644 return trans_send_cmd_pdu(&priv->trans,
1645 TX_ANT_CONFIGURATION_CMD,
1646 CMD_SYNC,
1647 sizeof(struct iwl_tx_ant_config_cmd),
1648 &tx_ant_cmd);
1649 } else {
1650 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1651 return -EOPNOTSUPP;
1652 }
1653 }
1654
1655 /**
1656 * iwl_alive_start - called after REPLY_ALIVE notification received
1657 * from protocol/runtime uCode (initialization uCode's
1658 * Alive gets handled by iwl_init_alive_start()).
1659 */
1660 int iwl_alive_start(struct iwl_priv *priv)
1661 {
1662 int ret = 0;
1663 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1664
1665 /*TODO: this should go to the transport layer */
1666 iwl_reset_ict(priv);
1667
1668 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1669
1670 /* After the ALIVE response, we can send host commands to the uCode */
1671 set_bit(STATUS_ALIVE, &priv->status);
1672
1673 /* Enable watchdog to monitor the driver tx queues */
1674 iwl_setup_watchdog(priv);
1675
1676 if (iwl_is_rfkill(priv))
1677 return -ERFKILL;
1678
1679 /* download priority table before any calibration request */
1680 if (priv->cfg->bt_params &&
1681 priv->cfg->bt_params->advanced_bt_coexist) {
1682 /* Configure Bluetooth device coexistence support */
1683 if (priv->cfg->bt_params->bt_sco_disable)
1684 priv->bt_enable_pspoll = false;
1685 else
1686 priv->bt_enable_pspoll = true;
1687
1688 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1689 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1690 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1691 iwlagn_send_advance_bt_config(priv);
1692 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1693 priv->cur_rssi_ctx = NULL;
1694
1695 iwlagn_send_prio_tbl(priv);
1696
1697 /* FIXME: w/a to force change uCode BT state machine */
1698 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1699 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1700 if (ret)
1701 return ret;
1702 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1703 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1704 if (ret)
1705 return ret;
1706 } else {
1707 /*
1708 * default is 2-wire BT coexexistence support
1709 */
1710 iwl_send_bt_config(priv);
1711 }
1712
1713 if (priv->hw_params.calib_rt_cfg)
1714 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
1715
1716 ieee80211_wake_queues(priv->hw);
1717
1718 priv->active_rate = IWL_RATES_MASK;
1719
1720 /* Configure Tx antenna selection based on H/W config */
1721 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1722
1723 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
1724 struct iwl_rxon_cmd *active_rxon =
1725 (struct iwl_rxon_cmd *)&ctx->active;
1726 /* apply any changes in staging */
1727 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1728 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1729 } else {
1730 struct iwl_rxon_context *tmp;
1731 /* Initialize our rx_config data */
1732 for_each_context(priv, tmp)
1733 iwl_connection_init_rx_config(priv, tmp);
1734
1735 iwlagn_set_rxon_chain(priv, ctx);
1736 }
1737
1738 if (!priv->wowlan) {
1739 /* WoWLAN ucode will not reply in the same way, skip it */
1740 iwl_reset_run_time_calib(priv);
1741 }
1742
1743 set_bit(STATUS_READY, &priv->status);
1744
1745 /* Configure the adapter for unassociated operation */
1746 ret = iwlagn_commit_rxon(priv, ctx);
1747 if (ret)
1748 return ret;
1749
1750 /* At this point, the NIC is initialized and operational */
1751 iwl_rf_kill_ct_config(priv);
1752
1753 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1754
1755 return iwl_power_update_mode(priv, true);
1756 }
1757
1758 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1759
1760 static void __iwl_down(struct iwl_priv *priv)
1761 {
1762 int exit_pending;
1763
1764 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1765
1766 iwl_scan_cancel_timeout(priv, 200);
1767
1768 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1769
1770 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1771 * to prevent rearm timer */
1772 del_timer_sync(&priv->watchdog);
1773
1774 iwl_clear_ucode_stations(priv, NULL);
1775 iwl_dealloc_bcast_stations(priv);
1776 iwl_clear_driver_stations(priv);
1777
1778 /* reset BT coex data */
1779 priv->bt_status = 0;
1780 priv->cur_rssi_ctx = NULL;
1781 priv->bt_is_sco = 0;
1782 if (priv->cfg->bt_params)
1783 priv->bt_traffic_load =
1784 priv->cfg->bt_params->bt_init_traffic_load;
1785 else
1786 priv->bt_traffic_load = 0;
1787 priv->bt_full_concurrent = false;
1788 priv->bt_ci_compliance = 0;
1789
1790 /* Wipe out the EXIT_PENDING status bit if we are not actually
1791 * exiting the module */
1792 if (!exit_pending)
1793 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1794
1795 if (priv->mac80211_registered)
1796 ieee80211_stop_queues(priv->hw);
1797
1798 /* Clear out all status bits but a few that are stable across reset */
1799 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1800 STATUS_RF_KILL_HW |
1801 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1802 STATUS_GEO_CONFIGURED |
1803 test_bit(STATUS_FW_ERROR, &priv->status) <<
1804 STATUS_FW_ERROR |
1805 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1806 STATUS_EXIT_PENDING;
1807
1808 trans_stop_device(&priv->trans);
1809
1810 dev_kfree_skb(priv->beacon_skb);
1811 priv->beacon_skb = NULL;
1812 }
1813
1814 static void iwl_down(struct iwl_priv *priv)
1815 {
1816 mutex_lock(&priv->mutex);
1817 __iwl_down(priv);
1818 mutex_unlock(&priv->mutex);
1819
1820 iwl_cancel_deferred_work(priv);
1821 }
1822
1823 #define MAX_HW_RESTARTS 5
1824
1825 static int __iwl_up(struct iwl_priv *priv)
1826 {
1827 struct iwl_rxon_context *ctx;
1828 int ret;
1829
1830 lockdep_assert_held(&priv->mutex);
1831
1832 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1833 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1834 return -EIO;
1835 }
1836
1837 for_each_context(priv, ctx) {
1838 ret = iwlagn_alloc_bcast_station(priv, ctx);
1839 if (ret) {
1840 iwl_dealloc_bcast_stations(priv);
1841 return ret;
1842 }
1843 }
1844
1845 ret = iwlagn_run_init_ucode(priv);
1846 if (ret) {
1847 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1848 goto error;
1849 }
1850
1851 ret = iwlagn_load_ucode_wait_alive(priv,
1852 &priv->ucode_rt,
1853 IWL_UCODE_REGULAR);
1854 if (ret) {
1855 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1856 goto error;
1857 }
1858
1859 ret = iwl_alive_start(priv);
1860 if (ret)
1861 goto error;
1862 return 0;
1863
1864 error:
1865 set_bit(STATUS_EXIT_PENDING, &priv->status);
1866 __iwl_down(priv);
1867 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1868
1869 IWL_ERR(priv, "Unable to initialize device.\n");
1870 return ret;
1871 }
1872
1873
1874 /*****************************************************************************
1875 *
1876 * Workqueue callbacks
1877 *
1878 *****************************************************************************/
1879
1880 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1881 {
1882 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1883 run_time_calib_work);
1884
1885 mutex_lock(&priv->mutex);
1886
1887 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1888 test_bit(STATUS_SCANNING, &priv->status)) {
1889 mutex_unlock(&priv->mutex);
1890 return;
1891 }
1892
1893 if (priv->start_calib) {
1894 iwl_chain_noise_calibration(priv);
1895 iwl_sensitivity_calibration(priv);
1896 }
1897
1898 mutex_unlock(&priv->mutex);
1899 }
1900
1901 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1902 {
1903 struct iwl_rxon_context *ctx;
1904 bool bt_full_concurrent;
1905 u8 bt_ci_compliance;
1906 u8 bt_load;
1907 u8 bt_status;
1908 bool bt_is_sco;
1909
1910 lockdep_assert_held(&priv->mutex);
1911
1912 for_each_context(priv, ctx)
1913 ctx->vif = NULL;
1914 priv->is_open = 0;
1915
1916 /*
1917 * __iwl_down() will clear the BT status variables,
1918 * which is correct, but when we restart we really
1919 * want to keep them so restore them afterwards.
1920 *
1921 * The restart process will later pick them up and
1922 * re-configure the hw when we reconfigure the BT
1923 * command.
1924 */
1925 bt_full_concurrent = priv->bt_full_concurrent;
1926 bt_ci_compliance = priv->bt_ci_compliance;
1927 bt_load = priv->bt_traffic_load;
1928 bt_status = priv->bt_status;
1929 bt_is_sco = priv->bt_is_sco;
1930
1931 __iwl_down(priv);
1932
1933 priv->bt_full_concurrent = bt_full_concurrent;
1934 priv->bt_ci_compliance = bt_ci_compliance;
1935 priv->bt_traffic_load = bt_load;
1936 priv->bt_status = bt_status;
1937 priv->bt_is_sco = bt_is_sco;
1938 }
1939
1940 static void iwl_bg_restart(struct work_struct *data)
1941 {
1942 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1943
1944 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1945 return;
1946
1947 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1948 mutex_lock(&priv->mutex);
1949 iwlagn_prepare_restart(priv);
1950 mutex_unlock(&priv->mutex);
1951 iwl_cancel_deferred_work(priv);
1952 ieee80211_restart_hw(priv->hw);
1953 } else {
1954 WARN_ON(1);
1955 }
1956 }
1957
1958 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
1959 struct ieee80211_channel *chan,
1960 enum nl80211_channel_type channel_type,
1961 unsigned int wait)
1962 {
1963 struct iwl_priv *priv = hw->priv;
1964 int ret;
1965
1966 /* Not supported if we don't have PAN */
1967 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
1968 ret = -EOPNOTSUPP;
1969 goto free;
1970 }
1971
1972 /* Not supported on pre-P2P firmware */
1973 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
1974 BIT(NL80211_IFTYPE_P2P_CLIENT))) {
1975 ret = -EOPNOTSUPP;
1976 goto free;
1977 }
1978
1979 mutex_lock(&priv->mutex);
1980
1981 if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
1982 /*
1983 * If the PAN context is free, use the normal
1984 * way of doing remain-on-channel offload + TX.
1985 */
1986 ret = 1;
1987 goto out;
1988 }
1989
1990 /* TODO: queue up if scanning? */
1991 if (test_bit(STATUS_SCANNING, &priv->status) ||
1992 priv->offchan_tx_skb) {
1993 ret = -EBUSY;
1994 goto out;
1995 }
1996
1997 /*
1998 * max_scan_ie_len doesn't include the blank SSID or the header,
1999 * so need to add that again here.
2000 */
2001 if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2002 ret = -ENOBUFS;
2003 goto out;
2004 }
2005
2006 priv->offchan_tx_skb = skb;
2007 priv->offchan_tx_timeout = wait;
2008 priv->offchan_tx_chan = chan;
2009
2010 ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2011 IWL_SCAN_OFFCH_TX, chan->band);
2012 if (ret)
2013 priv->offchan_tx_skb = NULL;
2014 out:
2015 mutex_unlock(&priv->mutex);
2016 free:
2017 if (ret < 0)
2018 kfree_skb(skb);
2019
2020 return ret;
2021 }
2022
2023 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2024 {
2025 struct iwl_priv *priv = hw->priv;
2026 int ret;
2027
2028 mutex_lock(&priv->mutex);
2029
2030 if (!priv->offchan_tx_skb) {
2031 ret = -EINVAL;
2032 goto unlock;
2033 }
2034
2035 priv->offchan_tx_skb = NULL;
2036
2037 ret = iwl_scan_cancel_timeout(priv, 200);
2038 if (ret)
2039 ret = -EIO;
2040 unlock:
2041 mutex_unlock(&priv->mutex);
2042
2043 return ret;
2044 }
2045
2046 /*****************************************************************************
2047 *
2048 * mac80211 entry point functions
2049 *
2050 *****************************************************************************/
2051
2052 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2053 {
2054 .max = 1,
2055 .types = BIT(NL80211_IFTYPE_STATION),
2056 },
2057 {
2058 .max = 1,
2059 .types = BIT(NL80211_IFTYPE_AP),
2060 },
2061 };
2062
2063 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2064 {
2065 .max = 2,
2066 .types = BIT(NL80211_IFTYPE_STATION),
2067 },
2068 };
2069
2070 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2071 {
2072 .max = 1,
2073 .types = BIT(NL80211_IFTYPE_STATION),
2074 },
2075 {
2076 .max = 1,
2077 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2078 BIT(NL80211_IFTYPE_AP),
2079 },
2080 };
2081
2082 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2083 {
2084 .max = 2,
2085 .types = BIT(NL80211_IFTYPE_STATION),
2086 },
2087 {
2088 .max = 1,
2089 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2090 },
2091 };
2092
2093 static const struct ieee80211_iface_combination
2094 iwlagn_iface_combinations_dualmode[] = {
2095 { .num_different_channels = 1,
2096 .max_interfaces = 2,
2097 .beacon_int_infra_match = true,
2098 .limits = iwlagn_sta_ap_limits,
2099 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2100 },
2101 { .num_different_channels = 1,
2102 .max_interfaces = 2,
2103 .limits = iwlagn_2sta_limits,
2104 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2105 },
2106 };
2107
2108 static const struct ieee80211_iface_combination
2109 iwlagn_iface_combinations_p2p[] = {
2110 { .num_different_channels = 1,
2111 .max_interfaces = 2,
2112 .beacon_int_infra_match = true,
2113 .limits = iwlagn_p2p_sta_go_limits,
2114 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2115 },
2116 { .num_different_channels = 1,
2117 .max_interfaces = 2,
2118 .limits = iwlagn_p2p_2sta_limits,
2119 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2120 },
2121 };
2122
2123 /*
2124 * Not a mac80211 entry point function, but it fits in with all the
2125 * other mac80211 functions grouped here.
2126 */
2127 static int iwl_mac_setup_register(struct iwl_priv *priv,
2128 struct iwlagn_ucode_capabilities *capa)
2129 {
2130 int ret;
2131 struct ieee80211_hw *hw = priv->hw;
2132 struct iwl_rxon_context *ctx;
2133
2134 hw->rate_control_algorithm = "iwl-agn-rs";
2135
2136 /* Tell mac80211 our characteristics */
2137 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2138 IEEE80211_HW_AMPDU_AGGREGATION |
2139 IEEE80211_HW_NEED_DTIM_PERIOD |
2140 IEEE80211_HW_SPECTRUM_MGMT |
2141 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2142
2143 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2144
2145 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2146 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2147
2148 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2149 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2150 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2151
2152 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2153 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2154
2155 hw->sta_data_size = sizeof(struct iwl_station_priv);
2156 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2157
2158 for_each_context(priv, ctx) {
2159 hw->wiphy->interface_modes |= ctx->interface_modes;
2160 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2161 }
2162
2163 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2164
2165 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2166 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2167 hw->wiphy->n_iface_combinations =
2168 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2169 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2170 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2171 hw->wiphy->n_iface_combinations =
2172 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2173 }
2174
2175 hw->wiphy->max_remain_on_channel_duration = 1000;
2176
2177 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2178 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2179 WIPHY_FLAG_IBSS_RSN;
2180
2181 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2182 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2183 WIPHY_WOWLAN_DISCONNECT |
2184 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2185 WIPHY_WOWLAN_RFKILL_RELEASE;
2186 if (!iwlagn_mod_params.sw_crypto)
2187 hw->wiphy->wowlan.flags |=
2188 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2189 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2190
2191 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2192 hw->wiphy->wowlan.pattern_min_len =
2193 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2194 hw->wiphy->wowlan.pattern_max_len =
2195 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2196 }
2197
2198 if (iwlagn_mod_params.power_save)
2199 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2200 else
2201 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2202
2203 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2204 /* we create the 802.11 header and a zero-length SSID element */
2205 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2206
2207 /* Default value; 4 EDCA QOS priorities */
2208 hw->queues = 4;
2209
2210 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2211
2212 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2213 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2214 &priv->bands[IEEE80211_BAND_2GHZ];
2215 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2216 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2217 &priv->bands[IEEE80211_BAND_5GHZ];
2218
2219 iwl_leds_init(priv);
2220
2221 ret = ieee80211_register_hw(priv->hw);
2222 if (ret) {
2223 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2224 return ret;
2225 }
2226 priv->mac80211_registered = 1;
2227
2228 return 0;
2229 }
2230
2231
2232 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2233 {
2234 struct iwl_priv *priv = hw->priv;
2235 int ret;
2236
2237 IWL_DEBUG_MAC80211(priv, "enter\n");
2238
2239 /* we should be verifying the device is ready to be opened */
2240 mutex_lock(&priv->mutex);
2241 ret = __iwl_up(priv);
2242 mutex_unlock(&priv->mutex);
2243 if (ret)
2244 return ret;
2245
2246 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2247
2248 /* Now we should be done, and the READY bit should be set. */
2249 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2250 ret = -EIO;
2251
2252 iwlagn_led_enable(priv);
2253
2254 priv->is_open = 1;
2255 IWL_DEBUG_MAC80211(priv, "leave\n");
2256 return 0;
2257 }
2258
2259 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2260 {
2261 struct iwl_priv *priv = hw->priv;
2262
2263 IWL_DEBUG_MAC80211(priv, "enter\n");
2264
2265 if (!priv->is_open)
2266 return;
2267
2268 priv->is_open = 0;
2269
2270 iwl_down(priv);
2271
2272 flush_workqueue(priv->workqueue);
2273
2274 /* User space software may expect getting rfkill changes
2275 * even if interface is down */
2276 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2277 iwl_enable_rfkill_int(priv);
2278
2279 IWL_DEBUG_MAC80211(priv, "leave\n");
2280 }
2281
2282 static int iwlagn_send_patterns(struct iwl_priv *priv,
2283 struct cfg80211_wowlan *wowlan)
2284 {
2285 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2286 struct iwl_host_cmd cmd = {
2287 .id = REPLY_WOWLAN_PATTERNS,
2288 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2289 .flags = CMD_SYNC,
2290 };
2291 int i, err;
2292
2293 if (!wowlan->n_patterns)
2294 return 0;
2295
2296 cmd.len[0] = sizeof(*pattern_cmd) +
2297 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2298
2299 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2300 if (!pattern_cmd)
2301 return -ENOMEM;
2302
2303 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2304
2305 for (i = 0; i < wowlan->n_patterns; i++) {
2306 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2307
2308 memcpy(&pattern_cmd->patterns[i].mask,
2309 wowlan->patterns[i].mask, mask_len);
2310 memcpy(&pattern_cmd->patterns[i].pattern,
2311 wowlan->patterns[i].pattern,
2312 wowlan->patterns[i].pattern_len);
2313 pattern_cmd->patterns[i].mask_size = mask_len;
2314 pattern_cmd->patterns[i].pattern_size =
2315 wowlan->patterns[i].pattern_len;
2316 }
2317
2318 cmd.data[0] = pattern_cmd;
2319 err = trans_send_cmd(&priv->trans, &cmd);
2320 kfree(pattern_cmd);
2321 return err;
2322 }
2323
2324 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2325 struct ieee80211_vif *vif,
2326 struct cfg80211_gtk_rekey_data *data)
2327 {
2328 struct iwl_priv *priv = hw->priv;
2329
2330 if (iwlagn_mod_params.sw_crypto)
2331 return;
2332
2333 mutex_lock(&priv->mutex);
2334
2335 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2336 goto out;
2337
2338 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2339 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2340 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2341 priv->have_rekey_data = true;
2342
2343 out:
2344 mutex_unlock(&priv->mutex);
2345 }
2346
2347 struct wowlan_key_data {
2348 struct iwl_rxon_context *ctx;
2349 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2350 struct iwlagn_wowlan_tkip_params_cmd *tkip;
2351 const u8 *bssid;
2352 bool error, use_rsc_tsc, use_tkip;
2353 };
2354
2355 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2356 {
2357 int i;
2358
2359 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2360 out[i] = cpu_to_le16(p1k[i]);
2361 }
2362
2363 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2364 struct ieee80211_vif *vif,
2365 struct ieee80211_sta *sta,
2366 struct ieee80211_key_conf *key,
2367 void *_data)
2368 {
2369 struct iwl_priv *priv = hw->priv;
2370 struct wowlan_key_data *data = _data;
2371 struct iwl_rxon_context *ctx = data->ctx;
2372 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2373 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2374 struct iwlagn_p1k_cache *rx_p1ks;
2375 u8 *rx_mic_key;
2376 struct ieee80211_key_seq seq;
2377 u32 cur_rx_iv32 = 0;
2378 u16 p1k[IWLAGN_P1K_SIZE];
2379 int ret, i;
2380
2381 mutex_lock(&priv->mutex);
2382
2383 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2384 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2385 !sta && !ctx->key_mapping_keys)
2386 ret = iwl_set_default_wep_key(priv, ctx, key);
2387 else
2388 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2389
2390 if (ret) {
2391 IWL_ERR(priv, "Error setting key during suspend!\n");
2392 data->error = true;
2393 }
2394
2395 switch (key->cipher) {
2396 case WLAN_CIPHER_SUITE_TKIP:
2397 if (sta) {
2398 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2399 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2400
2401 rx_p1ks = data->tkip->rx_uni;
2402
2403 ieee80211_get_key_tx_seq(key, &seq);
2404 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2405 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2406
2407 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2408 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2409
2410 memcpy(data->tkip->mic_keys.tx,
2411 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2412 IWLAGN_MIC_KEY_SIZE);
2413
2414 rx_mic_key = data->tkip->mic_keys.rx_unicast;
2415 } else {
2416 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2417 rx_p1ks = data->tkip->rx_multi;
2418 rx_mic_key = data->tkip->mic_keys.rx_mcast;
2419 }
2420
2421 /*
2422 * For non-QoS this relies on the fact that both the uCode and
2423 * mac80211 use TID 0 (as they need to to avoid replay attacks)
2424 * for checking the IV in the frames.
2425 */
2426 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2427 ieee80211_get_key_rx_seq(key, i, &seq);
2428 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2429 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2430 /* wrapping isn't allowed, AP must rekey */
2431 if (seq.tkip.iv32 > cur_rx_iv32)
2432 cur_rx_iv32 = seq.tkip.iv32;
2433 }
2434
2435 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2436 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2437 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2438 cur_rx_iv32 + 1, p1k);
2439 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2440
2441 memcpy(rx_mic_key,
2442 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2443 IWLAGN_MIC_KEY_SIZE);
2444
2445 data->use_tkip = true;
2446 data->use_rsc_tsc = true;
2447 break;
2448 case WLAN_CIPHER_SUITE_CCMP:
2449 if (sta) {
2450 u8 *pn = seq.ccmp.pn;
2451
2452 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2453 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2454
2455 ieee80211_get_key_tx_seq(key, &seq);
2456 aes_tx_sc->pn = cpu_to_le64(
2457 (u64)pn[5] |
2458 ((u64)pn[4] << 8) |
2459 ((u64)pn[3] << 16) |
2460 ((u64)pn[2] << 24) |
2461 ((u64)pn[1] << 32) |
2462 ((u64)pn[0] << 40));
2463 } else
2464 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2465
2466 /*
2467 * For non-QoS this relies on the fact that both the uCode and
2468 * mac80211 use TID 0 for checking the IV in the frames.
2469 */
2470 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2471 u8 *pn = seq.ccmp.pn;
2472
2473 ieee80211_get_key_rx_seq(key, i, &seq);
2474 aes_sc->pn = cpu_to_le64(
2475 (u64)pn[5] |
2476 ((u64)pn[4] << 8) |
2477 ((u64)pn[3] << 16) |
2478 ((u64)pn[2] << 24) |
2479 ((u64)pn[1] << 32) |
2480 ((u64)pn[0] << 40));
2481 }
2482 data->use_rsc_tsc = true;
2483 break;
2484 }
2485
2486 mutex_unlock(&priv->mutex);
2487 }
2488
2489 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2490 struct cfg80211_wowlan *wowlan)
2491 {
2492 struct iwl_priv *priv = hw->priv;
2493 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2494 struct iwl_rxon_cmd rxon;
2495 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2496 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2497 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2498 struct wowlan_key_data key_data = {
2499 .ctx = ctx,
2500 .bssid = ctx->active.bssid_addr,
2501 .use_rsc_tsc = false,
2502 .tkip = &tkip_cmd,
2503 .use_tkip = false,
2504 };
2505 int ret, i;
2506 u16 seq;
2507
2508 if (WARN_ON(!wowlan))
2509 return -EINVAL;
2510
2511 mutex_lock(&priv->mutex);
2512
2513 /* Don't attempt WoWLAN when not associated, tear down instead. */
2514 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2515 !iwl_is_associated_ctx(ctx)) {
2516 ret = 1;
2517 goto out;
2518 }
2519
2520 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2521 if (!key_data.rsc_tsc) {
2522 ret = -ENOMEM;
2523 goto out;
2524 }
2525
2526 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2527
2528 /*
2529 * We know the last used seqno, and the uCode expects to know that
2530 * one, it will increment before TX.
2531 */
2532 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2533 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2534
2535 /*
2536 * For QoS counters, we store the one to use next, so subtract 0x10
2537 * since the uCode will add 0x10 before using the value.
2538 */
2539 for (i = 0; i < 8; i++) {
2540 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2541 seq -= 0x10;
2542 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2543 }
2544
2545 if (wowlan->disconnect)
2546 wakeup_filter_cmd.enabled |=
2547 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2548 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2549 if (wowlan->magic_pkt)
2550 wakeup_filter_cmd.enabled |=
2551 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2552 if (wowlan->gtk_rekey_failure)
2553 wakeup_filter_cmd.enabled |=
2554 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2555 if (wowlan->eap_identity_req)
2556 wakeup_filter_cmd.enabled |=
2557 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2558 if (wowlan->four_way_handshake)
2559 wakeup_filter_cmd.enabled |=
2560 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2561 if (wowlan->rfkill_release)
2562 wakeup_filter_cmd.enabled |=
2563 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2564 if (wowlan->n_patterns)
2565 wakeup_filter_cmd.enabled |=
2566 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2567
2568 iwl_scan_cancel_timeout(priv, 200);
2569
2570 memcpy(&rxon, &ctx->active, sizeof(rxon));
2571
2572 trans_stop_device(&priv->trans);
2573
2574 priv->wowlan = true;
2575
2576 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2577 IWL_UCODE_WOWLAN);
2578 if (ret)
2579 goto error;
2580
2581 /* now configure WoWLAN ucode */
2582 ret = iwl_alive_start(priv);
2583 if (ret)
2584 goto error;
2585
2586 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2587 ret = iwlagn_commit_rxon(priv, ctx);
2588 if (ret)
2589 goto error;
2590
2591 ret = iwl_power_update_mode(priv, true);
2592 if (ret)
2593 goto error;
2594
2595 if (!iwlagn_mod_params.sw_crypto) {
2596 /* mark all keys clear */
2597 priv->ucode_key_table = 0;
2598 ctx->key_mapping_keys = 0;
2599
2600 /*
2601 * This needs to be unlocked due to lock ordering
2602 * constraints. Since we're in the suspend path
2603 * that isn't really a problem though.
2604 */
2605 mutex_unlock(&priv->mutex);
2606 ieee80211_iter_keys(priv->hw, ctx->vif,
2607 iwlagn_wowlan_program_keys,
2608 &key_data);
2609 mutex_lock(&priv->mutex);
2610 if (key_data.error) {
2611 ret = -EIO;
2612 goto error;
2613 }
2614
2615 if (key_data.use_rsc_tsc) {
2616 struct iwl_host_cmd rsc_tsc_cmd = {
2617 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2618 .flags = CMD_SYNC,
2619 .data[0] = key_data.rsc_tsc,
2620 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2621 .len[0] = sizeof(*key_data.rsc_tsc),
2622 };
2623
2624 ret = trans_send_cmd(&priv->trans, &rsc_tsc_cmd);
2625 if (ret)
2626 goto error;
2627 }
2628
2629 if (key_data.use_tkip) {
2630 ret = trans_send_cmd_pdu(&priv->trans,
2631 REPLY_WOWLAN_TKIP_PARAMS,
2632 CMD_SYNC, sizeof(tkip_cmd),
2633 &tkip_cmd);
2634 if (ret)
2635 goto error;
2636 }
2637
2638 if (priv->have_rekey_data) {
2639 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2640 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2641 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2642 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2643 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2644 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2645
2646 ret = trans_send_cmd_pdu(&priv->trans,
2647 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2648 CMD_SYNC, sizeof(kek_kck_cmd),
2649 &kek_kck_cmd);
2650 if (ret)
2651 goto error;
2652 }
2653 }
2654
2655 ret = trans_send_cmd_pdu(&priv->trans, REPLY_WOWLAN_WAKEUP_FILTER,
2656 CMD_SYNC, sizeof(wakeup_filter_cmd),
2657 &wakeup_filter_cmd);
2658 if (ret)
2659 goto error;
2660
2661 ret = iwlagn_send_patterns(priv, wowlan);
2662 if (ret)
2663 goto error;
2664
2665 device_set_wakeup_enable(priv->bus->dev, true);
2666
2667 /* Now let the ucode operate on its own */
2668 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2669 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2670
2671 goto out;
2672
2673 error:
2674 priv->wowlan = false;
2675 iwlagn_prepare_restart(priv);
2676 ieee80211_restart_hw(priv->hw);
2677 out:
2678 mutex_unlock(&priv->mutex);
2679 kfree(key_data.rsc_tsc);
2680 return ret;
2681 }
2682
2683 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2684 {
2685 struct iwl_priv *priv = hw->priv;
2686 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2687 struct ieee80211_vif *vif;
2688 unsigned long flags;
2689 u32 base, status = 0xffffffff;
2690 int ret = -EIO;
2691
2692 mutex_lock(&priv->mutex);
2693
2694 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2695 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2696
2697 base = priv->device_pointers.error_event_table;
2698 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2699 spin_lock_irqsave(&priv->reg_lock, flags);
2700 ret = iwl_grab_nic_access_silent(priv);
2701 if (ret == 0) {
2702 iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2703 status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2704 iwl_release_nic_access(priv);
2705 }
2706 spin_unlock_irqrestore(&priv->reg_lock, flags);
2707
2708 #ifdef CONFIG_IWLWIFI_DEBUGFS
2709 if (ret == 0) {
2710 if (!priv->wowlan_sram)
2711 priv->wowlan_sram =
2712 kzalloc(priv->ucode_wowlan.data.len,
2713 GFP_KERNEL);
2714
2715 if (priv->wowlan_sram)
2716 _iwl_read_targ_mem_words(
2717 priv, 0x800000, priv->wowlan_sram,
2718 priv->ucode_wowlan.data.len / 4);
2719 }
2720 #endif
2721 }
2722
2723 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2724 vif = ctx->vif;
2725
2726 priv->wowlan = false;
2727
2728 device_set_wakeup_enable(priv->bus->dev, false);
2729
2730 iwlagn_prepare_restart(priv);
2731
2732 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2733 iwl_connection_init_rx_config(priv, ctx);
2734 iwlagn_set_rxon_chain(priv, ctx);
2735
2736 mutex_unlock(&priv->mutex);
2737
2738 ieee80211_resume_disconnect(vif);
2739
2740 return 1;
2741 }
2742
2743 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2744 {
2745 struct iwl_priv *priv = hw->priv;
2746
2747 IWL_DEBUG_MACDUMP(priv, "enter\n");
2748
2749 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2750 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2751
2752 if (iwlagn_tx_skb(priv, skb))
2753 dev_kfree_skb_any(skb);
2754
2755 IWL_DEBUG_MACDUMP(priv, "leave\n");
2756 }
2757
2758 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2759 struct ieee80211_vif *vif,
2760 struct ieee80211_key_conf *keyconf,
2761 struct ieee80211_sta *sta,
2762 u32 iv32, u16 *phase1key)
2763 {
2764 struct iwl_priv *priv = hw->priv;
2765
2766 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2767 }
2768
2769 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2770 struct ieee80211_vif *vif,
2771 struct ieee80211_sta *sta,
2772 struct ieee80211_key_conf *key)
2773 {
2774 struct iwl_priv *priv = hw->priv;
2775 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2776 struct iwl_rxon_context *ctx = vif_priv->ctx;
2777 int ret;
2778 bool is_default_wep_key = false;
2779
2780 IWL_DEBUG_MAC80211(priv, "enter\n");
2781
2782 if (iwlagn_mod_params.sw_crypto) {
2783 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2784 return -EOPNOTSUPP;
2785 }
2786
2787 /*
2788 * We could program these keys into the hardware as well, but we
2789 * don't expect much multicast traffic in IBSS and having keys
2790 * for more stations is probably more useful.
2791 *
2792 * Mark key TX-only and return 0.
2793 */
2794 if (vif->type == NL80211_IFTYPE_ADHOC &&
2795 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2796 key->hw_key_idx = WEP_INVALID_OFFSET;
2797 return 0;
2798 }
2799
2800 /* If they key was TX-only, accept deletion */
2801 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2802 return 0;
2803
2804 mutex_lock(&priv->mutex);
2805 iwl_scan_cancel_timeout(priv, 100);
2806
2807 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2808
2809 /*
2810 * If we are getting WEP group key and we didn't receive any key mapping
2811 * so far, we are in legacy wep mode (group key only), otherwise we are
2812 * in 1X mode.
2813 * In legacy wep mode, we use another host command to the uCode.
2814 */
2815 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2816 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2817 if (cmd == SET_KEY)
2818 is_default_wep_key = !ctx->key_mapping_keys;
2819 else
2820 is_default_wep_key =
2821 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2822 }
2823
2824
2825 switch (cmd) {
2826 case SET_KEY:
2827 if (is_default_wep_key) {
2828 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2829 break;
2830 }
2831 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2832 if (ret) {
2833 /*
2834 * can't add key for RX, but we don't need it
2835 * in the device for TX so still return 0
2836 */
2837 ret = 0;
2838 key->hw_key_idx = WEP_INVALID_OFFSET;
2839 }
2840
2841 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2842 break;
2843 case DISABLE_KEY:
2844 if (is_default_wep_key)
2845 ret = iwl_remove_default_wep_key(priv, ctx, key);
2846 else
2847 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2848
2849 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2850 break;
2851 default:
2852 ret = -EINVAL;
2853 }
2854
2855 mutex_unlock(&priv->mutex);
2856 IWL_DEBUG_MAC80211(priv, "leave\n");
2857
2858 return ret;
2859 }
2860
2861 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2862 struct ieee80211_vif *vif,
2863 enum ieee80211_ampdu_mlme_action action,
2864 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2865 u8 buf_size)
2866 {
2867 struct iwl_priv *priv = hw->priv;
2868 int ret = -EINVAL;
2869 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2870
2871 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2872 sta->addr, tid);
2873
2874 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2875 return -EACCES;
2876
2877 mutex_lock(&priv->mutex);
2878
2879 switch (action) {
2880 case IEEE80211_AMPDU_RX_START:
2881 IWL_DEBUG_HT(priv, "start Rx\n");
2882 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2883 break;
2884 case IEEE80211_AMPDU_RX_STOP:
2885 IWL_DEBUG_HT(priv, "stop Rx\n");
2886 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2887 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2888 ret = 0;
2889 break;
2890 case IEEE80211_AMPDU_TX_START:
2891 IWL_DEBUG_HT(priv, "start Tx\n");
2892 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2893 if (ret == 0) {
2894 priv->agg_tids_count++;
2895 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2896 priv->agg_tids_count);
2897 }
2898 break;
2899 case IEEE80211_AMPDU_TX_STOP:
2900 IWL_DEBUG_HT(priv, "stop Tx\n");
2901 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2902 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2903 priv->agg_tids_count--;
2904 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2905 priv->agg_tids_count);
2906 }
2907 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2908 ret = 0;
2909 if (priv->cfg->ht_params &&
2910 priv->cfg->ht_params->use_rts_for_aggregation) {
2911 /*
2912 * switch off RTS/CTS if it was previously enabled
2913 */
2914 sta_priv->lq_sta.lq.general_params.flags &=
2915 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2916 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2917 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2918 }
2919 break;
2920 case IEEE80211_AMPDU_TX_OPERATIONAL:
2921 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2922
2923 trans_txq_agg_setup(&priv->trans, iwl_sta_id(sta), tid,
2924 buf_size);
2925
2926 /*
2927 * If the limit is 0, then it wasn't initialised yet,
2928 * use the default. We can do that since we take the
2929 * minimum below, and we don't want to go above our
2930 * default due to hardware restrictions.
2931 */
2932 if (sta_priv->max_agg_bufsize == 0)
2933 sta_priv->max_agg_bufsize =
2934 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2935
2936 /*
2937 * Even though in theory the peer could have different
2938 * aggregation reorder buffer sizes for different sessions,
2939 * our ucode doesn't allow for that and has a global limit
2940 * for each station. Therefore, use the minimum of all the
2941 * aggregation sessions and our default value.
2942 */
2943 sta_priv->max_agg_bufsize =
2944 min(sta_priv->max_agg_bufsize, buf_size);
2945
2946 if (priv->cfg->ht_params &&
2947 priv->cfg->ht_params->use_rts_for_aggregation) {
2948 /*
2949 * switch to RTS/CTS if it is the prefer protection
2950 * method for HT traffic
2951 */
2952
2953 sta_priv->lq_sta.lq.general_params.flags |=
2954 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2955 }
2956
2957 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2958 sta_priv->max_agg_bufsize;
2959
2960 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2961 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2962
2963 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2964 sta->addr, tid);
2965 ret = 0;
2966 break;
2967 }
2968 mutex_unlock(&priv->mutex);
2969
2970 return ret;
2971 }
2972
2973 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2974 struct ieee80211_vif *vif,
2975 struct ieee80211_sta *sta)
2976 {
2977 struct iwl_priv *priv = hw->priv;
2978 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2979 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2980 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2981 int ret;
2982 u8 sta_id;
2983
2984 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2985 sta->addr);
2986 mutex_lock(&priv->mutex);
2987 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2988 sta->addr);
2989 sta_priv->common.sta_id = IWL_INVALID_STATION;
2990
2991 atomic_set(&sta_priv->pending_frames, 0);
2992 if (vif->type == NL80211_IFTYPE_AP)
2993 sta_priv->client = true;
2994
2995 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2996 is_ap, sta, &sta_id);
2997 if (ret) {
2998 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2999 sta->addr, ret);
3000 /* Should we return success if return code is EEXIST ? */
3001 mutex_unlock(&priv->mutex);
3002 return ret;
3003 }
3004
3005 sta_priv->common.sta_id = sta_id;
3006
3007 /* Initialize rate scaling */
3008 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3009 sta->addr);
3010 iwl_rs_rate_init(priv, sta, sta_id);
3011 mutex_unlock(&priv->mutex);
3012
3013 return 0;
3014 }
3015
3016 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3017 struct ieee80211_channel_switch *ch_switch)
3018 {
3019 struct iwl_priv *priv = hw->priv;
3020 const struct iwl_channel_info *ch_info;
3021 struct ieee80211_conf *conf = &hw->conf;
3022 struct ieee80211_channel *channel = ch_switch->channel;
3023 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3024 /*
3025 * MULTI-FIXME
3026 * When we add support for multiple interfaces, we need to
3027 * revisit this. The channel switch command in the device
3028 * only affects the BSS context, but what does that really
3029 * mean? And what if we get a CSA on the second interface?
3030 * This needs a lot of work.
3031 */
3032 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3033 u16 ch;
3034
3035 IWL_DEBUG_MAC80211(priv, "enter\n");
3036
3037 mutex_lock(&priv->mutex);
3038
3039 if (iwl_is_rfkill(priv))
3040 goto out;
3041
3042 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3043 test_bit(STATUS_SCANNING, &priv->status) ||
3044 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
3045 goto out;
3046
3047 if (!iwl_is_associated_ctx(ctx))
3048 goto out;
3049
3050 if (!priv->cfg->lib->set_channel_switch)
3051 goto out;
3052
3053 ch = channel->hw_value;
3054 if (le16_to_cpu(ctx->active.channel) == ch)
3055 goto out;
3056
3057 ch_info = iwl_get_channel_info(priv, channel->band, ch);
3058 if (!is_channel_valid(ch_info)) {
3059 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3060 goto out;
3061 }
3062
3063 spin_lock_irq(&priv->lock);
3064
3065 priv->current_ht_config.smps = conf->smps_mode;
3066
3067 /* Configure HT40 channels */
3068 ctx->ht.enabled = conf_is_ht(conf);
3069 if (ctx->ht.enabled) {
3070 if (conf_is_ht40_minus(conf)) {
3071 ctx->ht.extension_chan_offset =
3072 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3073 ctx->ht.is_40mhz = true;
3074 } else if (conf_is_ht40_plus(conf)) {
3075 ctx->ht.extension_chan_offset =
3076 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3077 ctx->ht.is_40mhz = true;
3078 } else {
3079 ctx->ht.extension_chan_offset =
3080 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3081 ctx->ht.is_40mhz = false;
3082 }
3083 } else
3084 ctx->ht.is_40mhz = false;
3085
3086 if ((le16_to_cpu(ctx->staging.channel) != ch))
3087 ctx->staging.flags = 0;
3088
3089 iwl_set_rxon_channel(priv, channel, ctx);
3090 iwl_set_rxon_ht(priv, ht_conf);
3091 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3092
3093 spin_unlock_irq(&priv->lock);
3094
3095 iwl_set_rate(priv);
3096 /*
3097 * at this point, staging_rxon has the
3098 * configuration for channel switch
3099 */
3100 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3101 priv->switch_channel = cpu_to_le16(ch);
3102 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
3103 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3104 priv->switch_channel = 0;
3105 ieee80211_chswitch_done(ctx->vif, false);
3106 }
3107
3108 out:
3109 mutex_unlock(&priv->mutex);
3110 IWL_DEBUG_MAC80211(priv, "leave\n");
3111 }
3112
3113 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3114 unsigned int changed_flags,
3115 unsigned int *total_flags,
3116 u64 multicast)
3117 {
3118 struct iwl_priv *priv = hw->priv;
3119 __le32 filter_or = 0, filter_nand = 0;
3120 struct iwl_rxon_context *ctx;
3121
3122 #define CHK(test, flag) do { \
3123 if (*total_flags & (test)) \
3124 filter_or |= (flag); \
3125 else \
3126 filter_nand |= (flag); \
3127 } while (0)
3128
3129 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3130 changed_flags, *total_flags);
3131
3132 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3133 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3134 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3135 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3136
3137 #undef CHK
3138
3139 mutex_lock(&priv->mutex);
3140
3141 for_each_context(priv, ctx) {
3142 ctx->staging.filter_flags &= ~filter_nand;
3143 ctx->staging.filter_flags |= filter_or;
3144
3145 /*
3146 * Not committing directly because hardware can perform a scan,
3147 * but we'll eventually commit the filter flags change anyway.
3148 */
3149 }
3150
3151 mutex_unlock(&priv->mutex);
3152
3153 /*
3154 * Receiving all multicast frames is always enabled by the
3155 * default flags setup in iwl_connection_init_rx_config()
3156 * since we currently do not support programming multicast
3157 * filters into the device.
3158 */
3159 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3160 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3161 }
3162
3163 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3164 {
3165 struct iwl_priv *priv = hw->priv;
3166
3167 mutex_lock(&priv->mutex);
3168 IWL_DEBUG_MAC80211(priv, "enter\n");
3169
3170 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3171 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3172 goto done;
3173 }
3174 if (iwl_is_rfkill(priv)) {
3175 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3176 goto done;
3177 }
3178
3179 /*
3180 * mac80211 will not push any more frames for transmit
3181 * until the flush is completed
3182 */
3183 if (drop) {
3184 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3185 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3186 IWL_ERR(priv, "flush request fail\n");
3187 goto done;
3188 }
3189 }
3190 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3191 iwlagn_wait_tx_queue_empty(priv);
3192 done:
3193 mutex_unlock(&priv->mutex);
3194 IWL_DEBUG_MAC80211(priv, "leave\n");
3195 }
3196
3197 static void iwlagn_disable_roc(struct iwl_priv *priv)
3198 {
3199 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3200 struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
3201
3202 lockdep_assert_held(&priv->mutex);
3203
3204 if (!ctx->is_active)
3205 return;
3206
3207 ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
3208 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3209 iwl_set_rxon_channel(priv, chan, ctx);
3210 iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
3211
3212 priv->hw_roc_channel = NULL;
3213
3214 iwlagn_commit_rxon(priv, ctx);
3215
3216 ctx->is_active = false;
3217 }
3218
3219 static void iwlagn_bg_roc_done(struct work_struct *work)
3220 {
3221 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3222 hw_roc_work.work);
3223
3224 mutex_lock(&priv->mutex);
3225 ieee80211_remain_on_channel_expired(priv->hw);
3226 iwlagn_disable_roc(priv);
3227 mutex_unlock(&priv->mutex);
3228 }
3229
3230 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3231 struct ieee80211_channel *channel,
3232 enum nl80211_channel_type channel_type,
3233 int duration)
3234 {
3235 struct iwl_priv *priv = hw->priv;
3236 int err = 0;
3237
3238 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3239 return -EOPNOTSUPP;
3240
3241 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
3242 BIT(NL80211_IFTYPE_P2P_CLIENT)))
3243 return -EOPNOTSUPP;
3244
3245 mutex_lock(&priv->mutex);
3246
3247 if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
3248 test_bit(STATUS_SCAN_HW, &priv->status)) {
3249 err = -EBUSY;
3250 goto out;
3251 }
3252
3253 priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
3254 priv->hw_roc_channel = channel;
3255 priv->hw_roc_chantype = channel_type;
3256 priv->hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
3257 iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
3258 queue_delayed_work(priv->workqueue, &priv->hw_roc_work,
3259 msecs_to_jiffies(duration + 20));
3260
3261 msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
3262 ieee80211_ready_on_channel(priv->hw);
3263
3264 out:
3265 mutex_unlock(&priv->mutex);
3266
3267 return err;
3268 }
3269
3270 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3271 {
3272 struct iwl_priv *priv = hw->priv;
3273
3274 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3275 return -EOPNOTSUPP;
3276
3277 cancel_delayed_work_sync(&priv->hw_roc_work);
3278
3279 mutex_lock(&priv->mutex);
3280 iwlagn_disable_roc(priv);
3281 mutex_unlock(&priv->mutex);
3282
3283 return 0;
3284 }
3285
3286 /*****************************************************************************
3287 *
3288 * driver setup and teardown
3289 *
3290 *****************************************************************************/
3291
3292 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3293 {
3294 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3295
3296 init_waitqueue_head(&priv->wait_command_queue);
3297
3298 INIT_WORK(&priv->restart, iwl_bg_restart);
3299 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3300 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3301 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3302 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3303 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3304 INIT_DELAYED_WORK(&priv->hw_roc_work, iwlagn_bg_roc_done);
3305
3306 iwl_setup_scan_deferred_work(priv);
3307
3308 if (priv->cfg->lib->bt_setup_deferred_work)
3309 priv->cfg->lib->bt_setup_deferred_work(priv);
3310
3311 init_timer(&priv->statistics_periodic);
3312 priv->statistics_periodic.data = (unsigned long)priv;
3313 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3314
3315 init_timer(&priv->ucode_trace);
3316 priv->ucode_trace.data = (unsigned long)priv;
3317 priv->ucode_trace.function = iwl_bg_ucode_trace;
3318
3319 init_timer(&priv->watchdog);
3320 priv->watchdog.data = (unsigned long)priv;
3321 priv->watchdog.function = iwl_bg_watchdog;
3322 }
3323
3324 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3325 {
3326 if (priv->cfg->lib->cancel_deferred_work)
3327 priv->cfg->lib->cancel_deferred_work(priv);
3328
3329 cancel_work_sync(&priv->run_time_calib_work);
3330 cancel_work_sync(&priv->beacon_update);
3331
3332 iwl_cancel_scan_deferred_work(priv);
3333
3334 cancel_work_sync(&priv->bt_full_concurrency);
3335 cancel_work_sync(&priv->bt_runtime_config);
3336
3337 del_timer_sync(&priv->statistics_periodic);
3338 del_timer_sync(&priv->ucode_trace);
3339 }
3340
3341 static void iwl_init_hw_rates(struct iwl_priv *priv,
3342 struct ieee80211_rate *rates)
3343 {
3344 int i;
3345
3346 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3347 rates[i].bitrate = iwl_rates[i].ieee * 5;
3348 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3349 rates[i].hw_value_short = i;
3350 rates[i].flags = 0;
3351 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3352 /*
3353 * If CCK != 1M then set short preamble rate flag.
3354 */
3355 rates[i].flags |=
3356 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3357 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3358 }
3359 }
3360 }
3361
3362 static int iwl_init_drv(struct iwl_priv *priv)
3363 {
3364 int ret;
3365
3366 spin_lock_init(&priv->sta_lock);
3367 spin_lock_init(&priv->hcmd_lock);
3368
3369 mutex_init(&priv->mutex);
3370
3371 priv->ieee_channels = NULL;
3372 priv->ieee_rates = NULL;
3373 priv->band = IEEE80211_BAND_2GHZ;
3374
3375 priv->iw_mode = NL80211_IFTYPE_STATION;
3376 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3377 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3378 priv->agg_tids_count = 0;
3379
3380 /* initialize force reset */
3381 priv->force_reset[IWL_RF_RESET].reset_duration =
3382 IWL_DELAY_NEXT_FORCE_RF_RESET;
3383 priv->force_reset[IWL_FW_RESET].reset_duration =
3384 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3385
3386 priv->rx_statistics_jiffies = jiffies;
3387
3388 /* Choose which receivers/antennas to use */
3389 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3390
3391 iwl_init_scan_params(priv);
3392
3393 /* init bt coex */
3394 if (priv->cfg->bt_params &&
3395 priv->cfg->bt_params->advanced_bt_coexist) {
3396 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3397 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3398 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3399 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3400 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3401 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3402 }
3403
3404 ret = iwl_init_channel_map(priv);
3405 if (ret) {
3406 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3407 goto err;
3408 }
3409
3410 ret = iwlcore_init_geos(priv);
3411 if (ret) {
3412 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3413 goto err_free_channel_map;
3414 }
3415 iwl_init_hw_rates(priv, priv->ieee_rates);
3416
3417 return 0;
3418
3419 err_free_channel_map:
3420 iwl_free_channel_map(priv);
3421 err:
3422 return ret;
3423 }
3424
3425 static void iwl_uninit_drv(struct iwl_priv *priv)
3426 {
3427 iwl_calib_free_results(priv);
3428 iwlcore_free_geos(priv);
3429 iwl_free_channel_map(priv);
3430 kfree(priv->scan_cmd);
3431 kfree(priv->beacon_cmd);
3432 #ifdef CONFIG_IWLWIFI_DEBUGFS
3433 kfree(priv->wowlan_sram);
3434 #endif
3435 }
3436
3437 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3438 enum ieee80211_rssi_event rssi_event)
3439 {
3440 struct iwl_priv *priv = hw->priv;
3441
3442 mutex_lock(&priv->mutex);
3443
3444 if (priv->cfg->bt_params &&
3445 priv->cfg->bt_params->advanced_bt_coexist) {
3446 if (rssi_event == RSSI_EVENT_LOW)
3447 priv->bt_enable_pspoll = true;
3448 else if (rssi_event == RSSI_EVENT_HIGH)
3449 priv->bt_enable_pspoll = false;
3450
3451 iwlagn_send_advance_bt_config(priv);
3452 } else {
3453 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3454 "ignoring RSSI callback\n");
3455 }
3456
3457 mutex_unlock(&priv->mutex);
3458 }
3459
3460 struct ieee80211_ops iwlagn_hw_ops = {
3461 .tx = iwlagn_mac_tx,
3462 .start = iwlagn_mac_start,
3463 .stop = iwlagn_mac_stop,
3464 .suspend = iwlagn_mac_suspend,
3465 .resume = iwlagn_mac_resume,
3466 .add_interface = iwl_mac_add_interface,
3467 .remove_interface = iwl_mac_remove_interface,
3468 .change_interface = iwl_mac_change_interface,
3469 .config = iwlagn_mac_config,
3470 .configure_filter = iwlagn_configure_filter,
3471 .set_key = iwlagn_mac_set_key,
3472 .update_tkip_key = iwlagn_mac_update_tkip_key,
3473 .set_rekey_data = iwlagn_mac_set_rekey_data,
3474 .conf_tx = iwl_mac_conf_tx,
3475 .bss_info_changed = iwlagn_bss_info_changed,
3476 .ampdu_action = iwlagn_mac_ampdu_action,
3477 .hw_scan = iwl_mac_hw_scan,
3478 .sta_notify = iwlagn_mac_sta_notify,
3479 .sta_add = iwlagn_mac_sta_add,
3480 .sta_remove = iwl_mac_sta_remove,
3481 .channel_switch = iwlagn_mac_channel_switch,
3482 .flush = iwlagn_mac_flush,
3483 .tx_last_beacon = iwl_mac_tx_last_beacon,
3484 .remain_on_channel = iwl_mac_remain_on_channel,
3485 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3486 .offchannel_tx = iwl_mac_offchannel_tx,
3487 .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3488 .rssi_callback = iwl_mac_rssi_callback,
3489 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3490 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3491 };
3492
3493 static u32 iwl_hw_detect(struct iwl_priv *priv)
3494 {
3495 return iwl_read32(priv, CSR_HW_REV);
3496 }
3497
3498 static int iwl_set_hw_params(struct iwl_priv *priv)
3499 {
3500 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3501 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3502 if (iwlagn_mod_params.amsdu_size_8K)
3503 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3504 else
3505 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3506
3507 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3508
3509 if (iwlagn_mod_params.disable_11n)
3510 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3511
3512 /* Device-specific setup */
3513 return priv->cfg->lib->set_hw_params(priv);
3514 }
3515
3516 static const u8 iwlagn_bss_ac_to_fifo[] = {
3517 IWL_TX_FIFO_VO,
3518 IWL_TX_FIFO_VI,
3519 IWL_TX_FIFO_BE,
3520 IWL_TX_FIFO_BK,
3521 };
3522
3523 static const u8 iwlagn_bss_ac_to_queue[] = {
3524 0, 1, 2, 3,
3525 };
3526
3527 static const u8 iwlagn_pan_ac_to_fifo[] = {
3528 IWL_TX_FIFO_VO_IPAN,
3529 IWL_TX_FIFO_VI_IPAN,
3530 IWL_TX_FIFO_BE_IPAN,
3531 IWL_TX_FIFO_BK_IPAN,
3532 };
3533
3534 static const u8 iwlagn_pan_ac_to_queue[] = {
3535 7, 6, 5, 4,
3536 };
3537
3538 /* This function both allocates and initializes hw and priv. */
3539 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3540 {
3541 struct iwl_priv *priv;
3542 /* mac80211 allocates memory for this device instance, including
3543 * space for this driver's private structure */
3544 struct ieee80211_hw *hw;
3545
3546 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3547 if (hw == NULL) {
3548 pr_err("%s: Can not allocate network device\n",
3549 cfg->name);
3550 goto out;
3551 }
3552
3553 priv = hw->priv;
3554 priv->hw = hw;
3555
3556 out:
3557 return hw;
3558 }
3559
3560 static void iwl_init_context(struct iwl_priv *priv)
3561 {
3562 int i;
3563
3564 /*
3565 * The default context is always valid,
3566 * more may be discovered when firmware
3567 * is loaded.
3568 */
3569 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3570
3571 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3572 priv->contexts[i].ctxid = i;
3573
3574 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3575 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3576 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3577 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3578 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3579 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3580 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3581 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3582 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3583 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3584 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3585 BIT(NL80211_IFTYPE_ADHOC);
3586 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3587 BIT(NL80211_IFTYPE_STATION);
3588 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3589 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3590 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3591 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3592
3593 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3594 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3595 REPLY_WIPAN_RXON_TIMING;
3596 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3597 REPLY_WIPAN_RXON_ASSOC;
3598 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3599 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3600 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3601 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3602 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3603 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3604 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3605 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3606 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3607 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3608 #ifdef CONFIG_IWL_P2P
3609 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3610 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3611 #endif
3612 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3613 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3614 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3615
3616 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3617 }
3618
3619 int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
3620 {
3621 int err = 0;
3622 struct iwl_priv *priv;
3623 struct ieee80211_hw *hw;
3624 u16 num_mac;
3625 u32 hw_rev;
3626
3627 /************************
3628 * 1. Allocating HW data
3629 ************************/
3630 hw = iwl_alloc_all(cfg);
3631 if (!hw) {
3632 err = -ENOMEM;
3633 goto out;
3634 }
3635
3636 priv = hw->priv;
3637 priv->bus = bus;
3638 bus_set_drv_data(priv->bus, priv);
3639
3640 /* At this point both hw and priv are allocated. */
3641
3642 SET_IEEE80211_DEV(hw, priv->bus->dev);
3643
3644 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3645 priv->cfg = cfg;
3646 priv->inta_mask = CSR_INI_SET_MASK;
3647
3648 /* is antenna coupling more than 35dB ? */
3649 priv->bt_ant_couple_ok =
3650 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3651 true : false;
3652
3653 /* enable/disable bt channel inhibition */
3654 priv->bt_ch_announce = iwlagn_bt_ch_announce;
3655 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3656 (priv->bt_ch_announce) ? "On" : "Off");
3657
3658 if (iwl_alloc_traffic_mem(priv))
3659 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3660
3661 /* these spin locks will be used in apm_ops.init and EEPROM access
3662 * we should init now
3663 */
3664 spin_lock_init(&priv->reg_lock);
3665 spin_lock_init(&priv->lock);
3666
3667 /*
3668 * stop and reset the on-board processor just in case it is in a
3669 * strange state ... like being left stranded by a primary kernel
3670 * and this is now the kdump kernel trying to start up
3671 */
3672 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3673
3674 /***********************
3675 * 3. Read REV register
3676 ***********************/
3677 hw_rev = iwl_hw_detect(priv);
3678 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3679 priv->cfg->name, hw_rev);
3680
3681 err = iwl_trans_register(&priv->trans, priv);
3682 if (err)
3683 goto out_free_traffic_mem;
3684
3685 if (trans_prepare_card_hw(&priv->trans)) {
3686 err = -EIO;
3687 IWL_WARN(priv, "Failed, HW not ready\n");
3688 goto out_free_trans;
3689 }
3690
3691 /*****************
3692 * 4. Read EEPROM
3693 *****************/
3694 /* Read the EEPROM */
3695 err = iwl_eeprom_init(priv, hw_rev);
3696 if (err) {
3697 IWL_ERR(priv, "Unable to init EEPROM\n");
3698 goto out_free_trans;
3699 }
3700 err = iwl_eeprom_check_version(priv);
3701 if (err)
3702 goto out_free_eeprom;
3703
3704 err = iwl_eeprom_check_sku(priv);
3705 if (err)
3706 goto out_free_eeprom;
3707
3708 /* extract MAC Address */
3709 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3710 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3711 priv->hw->wiphy->addresses = priv->addresses;
3712 priv->hw->wiphy->n_addresses = 1;
3713 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3714 if (num_mac > 1) {
3715 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3716 ETH_ALEN);
3717 priv->addresses[1].addr[5]++;
3718 priv->hw->wiphy->n_addresses++;
3719 }
3720
3721 /* initialize all valid contexts */
3722 iwl_init_context(priv);
3723
3724 /************************
3725 * 5. Setup HW constants
3726 ************************/
3727 if (iwl_set_hw_params(priv)) {
3728 err = -ENOENT;
3729 IWL_ERR(priv, "failed to set hw parameters\n");
3730 goto out_free_eeprom;
3731 }
3732
3733 /*******************
3734 * 6. Setup priv
3735 *******************/
3736
3737 err = iwl_init_drv(priv);
3738 if (err)
3739 goto out_free_eeprom;
3740 /* At this point both hw and priv are initialized. */
3741
3742 /********************
3743 * 7. Setup services
3744 ********************/
3745 iwl_setup_deferred_work(priv);
3746 iwl_setup_rx_handlers(priv);
3747 iwl_testmode_init(priv);
3748
3749 /*********************************************
3750 * 8. Enable interrupts
3751 *********************************************/
3752
3753 iwl_enable_rfkill_int(priv);
3754
3755 /* If platform's RF_KILL switch is NOT set to KILL */
3756 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3757 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3758 else
3759 set_bit(STATUS_RF_KILL_HW, &priv->status);
3760
3761 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3762 test_bit(STATUS_RF_KILL_HW, &priv->status));
3763
3764 iwl_power_initialize(priv);
3765 iwl_tt_initialize(priv);
3766
3767 init_completion(&priv->firmware_loading_complete);
3768
3769 err = iwl_request_firmware(priv, true);
3770 if (err)
3771 goto out_destroy_workqueue;
3772
3773 return 0;
3774
3775 out_destroy_workqueue:
3776 destroy_workqueue(priv->workqueue);
3777 priv->workqueue = NULL;
3778 iwl_uninit_drv(priv);
3779 out_free_eeprom:
3780 iwl_eeprom_free(priv);
3781 out_free_trans:
3782 trans_free(&priv->trans);
3783 out_free_traffic_mem:
3784 iwl_free_traffic_mem(priv);
3785 ieee80211_free_hw(priv->hw);
3786 out:
3787 return err;
3788 }
3789
3790 void __devexit iwl_remove(struct iwl_priv * priv)
3791 {
3792 unsigned long flags;
3793
3794 wait_for_completion(&priv->firmware_loading_complete);
3795
3796 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3797
3798 iwl_dbgfs_unregister(priv);
3799 sysfs_remove_group(&priv->bus->dev->kobj,
3800 &iwl_attribute_group);
3801
3802 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3803 * to be called and iwl_down since we are removing the device
3804 * we need to set STATUS_EXIT_PENDING bit.
3805 */
3806 set_bit(STATUS_EXIT_PENDING, &priv->status);
3807
3808 iwl_testmode_cleanup(priv);
3809 iwl_leds_exit(priv);
3810
3811 if (priv->mac80211_registered) {
3812 ieee80211_unregister_hw(priv->hw);
3813 priv->mac80211_registered = 0;
3814 }
3815
3816 /* Reset to low power before unloading driver. */
3817 iwl_apm_stop(priv);
3818
3819 iwl_tt_exit(priv);
3820
3821 /* make sure we flush any pending irq or
3822 * tasklet for the driver
3823 */
3824 spin_lock_irqsave(&priv->lock, flags);
3825 iwl_disable_interrupts(priv);
3826 spin_unlock_irqrestore(&priv->lock, flags);
3827
3828 trans_sync_irq(&priv->trans);
3829
3830 iwl_dealloc_ucode(priv);
3831
3832 trans_rx_free(&priv->trans);
3833 trans_tx_free(&priv->trans);
3834
3835 iwl_eeprom_free(priv);
3836
3837 /*netif_stop_queue(dev); */
3838 flush_workqueue(priv->workqueue);
3839
3840 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3841 * priv->workqueue... so we can't take down the workqueue
3842 * until now... */
3843 destroy_workqueue(priv->workqueue);
3844 priv->workqueue = NULL;
3845 iwl_free_traffic_mem(priv);
3846
3847 trans_free(&priv->trans);
3848
3849 bus_set_drv_data(priv->bus, NULL);
3850
3851 iwl_uninit_drv(priv);
3852
3853 dev_kfree_skb(priv->beacon_skb);
3854
3855 ieee80211_free_hw(priv->hw);
3856 }
3857
3858
3859 /*****************************************************************************
3860 *
3861 * driver and module entry point
3862 *
3863 *****************************************************************************/
3864 static int __init iwl_init(void)
3865 {
3866
3867 int ret;
3868 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3869 pr_info(DRV_COPYRIGHT "\n");
3870
3871 ret = iwlagn_rate_control_register();
3872 if (ret) {
3873 pr_err("Unable to register rate control algorithm: %d\n", ret);
3874 return ret;
3875 }
3876
3877 ret = iwl_pci_register_driver();
3878
3879 if (ret)
3880 goto error_register;
3881 return ret;
3882
3883 error_register:
3884 iwlagn_rate_control_unregister();
3885 return ret;
3886 }
3887
3888 static void __exit iwl_exit(void)
3889 {
3890 iwl_pci_unregister_driver();
3891 iwlagn_rate_control_unregister();
3892 }
3893
3894 module_exit(iwl_exit);
3895 module_init(iwl_init);
3896
3897 #ifdef CONFIG_IWLWIFI_DEBUG
3898 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3899 MODULE_PARM_DESC(debug, "debug output mask");
3900 #endif
3901
3902 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3903 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3904 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3905 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3906 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3907 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3908 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3909 int, S_IRUGO);
3910 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3911 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3912 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3913
3914 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3915 S_IRUGO);
3916 MODULE_PARM_DESC(ucode_alternative,
3917 "specify ucode alternative to use from ucode file");
3918
3919 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3920 MODULE_PARM_DESC(antenna_coupling,
3921 "specify antenna coupling in dB (defualt: 0 dB)");
3922
3923 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3924 MODULE_PARM_DESC(bt_ch_inhibition,
3925 "Disable BT channel inhibition (default: enable)");
3926
3927 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3928 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3929
3930 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3931 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3932
3933 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3934 MODULE_PARM_DESC(wd_disable,
3935 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3936
3937 /*
3938 * set bt_coex_active to true, uCode will do kill/defer
3939 * every time the priority line is asserted (BT is sending signals on the
3940 * priority line in the PCIx).
3941 * set bt_coex_active to false, uCode will ignore the BT activity and
3942 * perform the normal operation
3943 *
3944 * User might experience transmit issue on some platform due to WiFi/BT
3945 * co-exist problem. The possible behaviors are:
3946 * Able to scan and finding all the available AP
3947 * Not able to associate with any AP
3948 * On those platforms, WiFi communication can be restored by set
3949 * "bt_coex_active" module parameter to "false"
3950 *
3951 * default: bt_coex_active = true (BT_COEX_ENABLE)
3952 */
3953 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3954 bool, S_IRUGO);
3955 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3956
3957 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3958 MODULE_PARM_DESC(led_mode, "0=system default, "
3959 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3960
3961 module_param_named(power_save, iwlagn_mod_params.power_save,
3962 bool, S_IRUGO);
3963 MODULE_PARM_DESC(power_save,
3964 "enable WiFi power management (default: disable)");
3965
3966 module_param_named(power_level, iwlagn_mod_params.power_level,
3967 int, S_IRUGO);
3968 MODULE_PARM_DESC(power_level,
3969 "default power save level (range from 1 - 5, default: 1)");
3970
3971 /*
3972 * For now, keep using power level 1 instead of automatically
3973 * adjusting ...
3974 */
3975 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3976 bool, S_IRUGO);
3977 MODULE_PARM_DESC(no_sleep_autoadjust,
3978 "don't automatically adjust sleep level "
3979 "according to maximum network latency (default: true)");
Linux with added FPC-III support