?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
iwlagn: simplify the bus architecture
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobaee62d0726abdc296738de78bb3b3384bf1fd4e2
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
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/delay.h>
38 #include <linux/sched.h>
39 #include <linux/skbuff.h>
40 #include <linux/netdevice.h>
41 #include <linux/wireless.h>
42 #include <linux/firmware.h>
43 #include <linux/etherdevice.h>
44 #include <linux/if_arp.h>
45
46 #include <net/mac80211.h>
47
48 #include <asm/div64.h>
49
50 #include "iwl-eeprom.h"
51 #include "iwl-dev.h"
52 #include "iwl-core.h"
53 #include "iwl-io.h"
54 #include "iwl-helpers.h"
55 #include "iwl-sta.h"
56 #include "iwl-agn-calib.h"
57 #include "iwl-agn.h"
58 #include "iwl-bus.h"
59 #include "iwl-trans.h"
60
61 /******************************************************************************
62 *
63 * module boiler plate
64 *
65 ******************************************************************************/
66
67 /*
68 * module name, copyright, version, etc.
69 */
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #define DRV_VERSION IWLWIFI_VERSION VD
79
80
81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
82 MODULE_VERSION(DRV_VERSION);
83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
84 MODULE_LICENSE("GPL");
85
86 static int iwlagn_ant_coupling;
87 static bool iwlagn_bt_ch_announce = 1;
88
89 void iwl_update_chain_flags(struct iwl_priv *priv)
90 {
91 struct iwl_rxon_context *ctx;
92
93 for_each_context(priv, ctx) {
94 iwlagn_set_rxon_chain(priv, ctx);
95 if (ctx->active.rx_chain != ctx->staging.rx_chain)
96 iwlagn_commit_rxon(priv, ctx);
97 }
98 }
99
100 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
101 static void iwl_set_beacon_tim(struct iwl_priv *priv,
102 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
103 u8 *beacon, u32 frame_size)
104 {
105 u16 tim_idx;
106 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
107
108 /*
109 * The index is relative to frame start but we start looking at the
110 * variable-length part of the beacon.
111 */
112 tim_idx = mgmt->u.beacon.variable - beacon;
113
114 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
115 while ((tim_idx < (frame_size - 2)) &&
116 (beacon[tim_idx] != WLAN_EID_TIM))
117 tim_idx += beacon[tim_idx+1] + 2;
118
119 /* If TIM field was found, set variables */
120 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
121 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
122 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
123 } else
124 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
125 }
126
127 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
128 {
129 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
130 struct iwl_host_cmd cmd = {
131 .id = REPLY_TX_BEACON,
132 .flags = CMD_SYNC,
133 };
134 struct ieee80211_tx_info *info;
135 u32 frame_size;
136 u32 rate_flags;
137 u32 rate;
138
139 /*
140 * We have to set up the TX command, the TX Beacon command, and the
141 * beacon contents.
142 */
143
144 lockdep_assert_held(&priv->mutex);
145
146 if (!priv->beacon_ctx) {
147 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
148 return 0;
149 }
150
151 if (WARN_ON(!priv->beacon_skb))
152 return -EINVAL;
153
154 /* Allocate beacon command */
155 if (!priv->beacon_cmd)
156 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
157 tx_beacon_cmd = priv->beacon_cmd;
158 if (!tx_beacon_cmd)
159 return -ENOMEM;
160
161 frame_size = priv->beacon_skb->len;
162
163 /* Set up TX command fields */
164 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
165 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
166 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
167 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
168 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
169
170 /* Set up TX beacon command fields */
171 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
172 frame_size);
173
174 /* Set up packet rate and flags */
175 info = IEEE80211_SKB_CB(priv->beacon_skb);
176
177 /*
178 * Let's set up the rate at least somewhat correctly;
179 * it will currently not actually be used by the uCode,
180 * it uses the broadcast station's rate instead.
181 */
182 if (info->control.rates[0].idx < 0 ||
183 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
184 rate = 0;
185 else
186 rate = info->control.rates[0].idx;
187
188 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
189 priv->hw_params.valid_tx_ant);
190 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
191
192 /* In mac80211, rates for 5 GHz start at 0 */
193 if (info->band == IEEE80211_BAND_5GHZ)
194 rate += IWL_FIRST_OFDM_RATE;
195 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
196 rate_flags |= RATE_MCS_CCK_MSK;
197
198 tx_beacon_cmd->tx.rate_n_flags =
199 iwl_hw_set_rate_n_flags(rate, rate_flags);
200
201 /* Submit command */
202 cmd.len[0] = sizeof(*tx_beacon_cmd);
203 cmd.data[0] = tx_beacon_cmd;
204 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
205 cmd.len[1] = frame_size;
206 cmd.data[1] = priv->beacon_skb->data;
207 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
208
209 return trans_send_cmd(&priv->trans, &cmd);
210 }
211
212 static void iwl_bg_beacon_update(struct work_struct *work)
213 {
214 struct iwl_priv *priv =
215 container_of(work, struct iwl_priv, beacon_update);
216 struct sk_buff *beacon;
217
218 mutex_lock(&priv->mutex);
219 if (!priv->beacon_ctx) {
220 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
221 goto out;
222 }
223
224 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
225 /*
226 * The ucode will send beacon notifications even in
227 * IBSS mode, but we don't want to process them. But
228 * we need to defer the type check to here due to
229 * requiring locking around the beacon_ctx access.
230 */
231 goto out;
232 }
233
234 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
235 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
236 if (!beacon) {
237 IWL_ERR(priv, "update beacon failed -- keeping old\n");
238 goto out;
239 }
240
241 /* new beacon skb is allocated every time; dispose previous.*/
242 dev_kfree_skb(priv->beacon_skb);
243
244 priv->beacon_skb = beacon;
245
246 iwlagn_send_beacon_cmd(priv);
247 out:
248 mutex_unlock(&priv->mutex);
249 }
250
251 static void iwl_bg_bt_runtime_config(struct work_struct *work)
252 {
253 struct iwl_priv *priv =
254 container_of(work, struct iwl_priv, bt_runtime_config);
255
256 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
257 return;
258
259 /* dont send host command if rf-kill is on */
260 if (!iwl_is_ready_rf(priv))
261 return;
262 iwlagn_send_advance_bt_config(priv);
263 }
264
265 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
266 {
267 struct iwl_priv *priv =
268 container_of(work, struct iwl_priv, bt_full_concurrency);
269 struct iwl_rxon_context *ctx;
270
271 mutex_lock(&priv->mutex);
272
273 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
274 goto out;
275
276 /* dont send host command if rf-kill is on */
277 if (!iwl_is_ready_rf(priv))
278 goto out;
279
280 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
281 priv->bt_full_concurrent ?
282 "full concurrency" : "3-wire");
283
284 /*
285 * LQ & RXON updated cmds must be sent before BT Config cmd
286 * to avoid 3-wire collisions
287 */
288 for_each_context(priv, ctx) {
289 iwlagn_set_rxon_chain(priv, ctx);
290 iwlagn_commit_rxon(priv, ctx);
291 }
292
293 iwlagn_send_advance_bt_config(priv);
294 out:
295 mutex_unlock(&priv->mutex);
296 }
297
298 /**
299 * iwl_bg_statistics_periodic - Timer callback to queue statistics
300 *
301 * This callback is provided in order to send a statistics request.
302 *
303 * This timer function is continually reset to execute within
304 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
305 * was received. We need to ensure we receive the statistics in order
306 * to update the temperature used for calibrating the TXPOWER.
307 */
308 static void iwl_bg_statistics_periodic(unsigned long data)
309 {
310 struct iwl_priv *priv = (struct iwl_priv *)data;
311
312 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
313 return;
314
315 /* dont send host command if rf-kill is on */
316 if (!iwl_is_ready_rf(priv))
317 return;
318
319 iwl_send_statistics_request(priv, CMD_ASYNC, false);
320 }
321
322
323 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
324 u32 start_idx, u32 num_events,
325 u32 mode)
326 {
327 u32 i;
328 u32 ptr; /* SRAM byte address of log data */
329 u32 ev, time, data; /* event log data */
330 unsigned long reg_flags;
331
332 if (mode == 0)
333 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
334 else
335 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
336
337 /* Make sure device is powered up for SRAM reads */
338 spin_lock_irqsave(&priv->reg_lock, reg_flags);
339 if (iwl_grab_nic_access(priv)) {
340 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
341 return;
342 }
343
344 /* Set starting address; reads will auto-increment */
345 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
346 rmb();
347
348 /*
349 * "time" is actually "data" for mode 0 (no timestamp).
350 * place event id # at far right for easier visual parsing.
351 */
352 for (i = 0; i < num_events; i++) {
353 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
354 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
355 if (mode == 0) {
356 trace_iwlwifi_dev_ucode_cont_event(priv,
357 0, time, ev);
358 } else {
359 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
360 trace_iwlwifi_dev_ucode_cont_event(priv,
361 time, data, ev);
362 }
363 }
364 /* Allow device to power down */
365 iwl_release_nic_access(priv);
366 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
367 }
368
369 static void iwl_continuous_event_trace(struct iwl_priv *priv)
370 {
371 u32 capacity; /* event log capacity in # entries */
372 u32 base; /* SRAM byte address of event log header */
373 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
374 u32 num_wraps; /* # times uCode wrapped to top of log */
375 u32 next_entry; /* index of next entry to be written by uCode */
376
377 base = priv->device_pointers.error_event_table;
378 if (iwlagn_hw_valid_rtc_data_addr(base)) {
379 capacity = iwl_read_targ_mem(priv, base);
380 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
381 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
382 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
383 } else
384 return;
385
386 if (num_wraps == priv->event_log.num_wraps) {
387 iwl_print_cont_event_trace(priv,
388 base, priv->event_log.next_entry,
389 next_entry - priv->event_log.next_entry,
390 mode);
391 priv->event_log.non_wraps_count++;
392 } else {
393 if ((num_wraps - priv->event_log.num_wraps) > 1)
394 priv->event_log.wraps_more_count++;
395 else
396 priv->event_log.wraps_once_count++;
397 trace_iwlwifi_dev_ucode_wrap_event(priv,
398 num_wraps - priv->event_log.num_wraps,
399 next_entry, priv->event_log.next_entry);
400 if (next_entry < priv->event_log.next_entry) {
401 iwl_print_cont_event_trace(priv, base,
402 priv->event_log.next_entry,
403 capacity - priv->event_log.next_entry,
404 mode);
405
406 iwl_print_cont_event_trace(priv, base, 0,
407 next_entry, mode);
408 } else {
409 iwl_print_cont_event_trace(priv, base,
410 next_entry, capacity - next_entry,
411 mode);
412
413 iwl_print_cont_event_trace(priv, base, 0,
414 next_entry, mode);
415 }
416 }
417 priv->event_log.num_wraps = num_wraps;
418 priv->event_log.next_entry = next_entry;
419 }
420
421 /**
422 * iwl_bg_ucode_trace - Timer callback to log ucode event
423 *
424 * The timer is continually set to execute every
425 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
426 * this function is to perform continuous uCode event logging operation
427 * if enabled
428 */
429 static void iwl_bg_ucode_trace(unsigned long data)
430 {
431 struct iwl_priv *priv = (struct iwl_priv *)data;
432
433 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
434 return;
435
436 if (priv->event_log.ucode_trace) {
437 iwl_continuous_event_trace(priv);
438 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
439 mod_timer(&priv->ucode_trace,
440 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
441 }
442 }
443
444 static void iwl_bg_tx_flush(struct work_struct *work)
445 {
446 struct iwl_priv *priv =
447 container_of(work, struct iwl_priv, tx_flush);
448
449 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
450 return;
451
452 /* do nothing if rf-kill is on */
453 if (!iwl_is_ready_rf(priv))
454 return;
455
456 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
457 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
458 }
459
460 /*****************************************************************************
461 *
462 * sysfs attributes
463 *
464 *****************************************************************************/
465
466 #ifdef CONFIG_IWLWIFI_DEBUG
467
468 /*
469 * The following adds a new attribute to the sysfs representation
470 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
471 * used for controlling the debug level.
472 *
473 * See the level definitions in iwl for details.
474 *
475 * The debug_level being managed using sysfs below is a per device debug
476 * level that is used instead of the global debug level if it (the per
477 * device debug level) is set.
478 */
479 static ssize_t show_debug_level(struct device *d,
480 struct device_attribute *attr, char *buf)
481 {
482 struct iwl_priv *priv = dev_get_drvdata(d);
483 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
484 }
485 static ssize_t store_debug_level(struct device *d,
486 struct device_attribute *attr,
487 const char *buf, size_t count)
488 {
489 struct iwl_priv *priv = dev_get_drvdata(d);
490 unsigned long val;
491 int ret;
492
493 ret = strict_strtoul(buf, 0, &val);
494 if (ret)
495 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
496 else {
497 priv->debug_level = val;
498 if (iwl_alloc_traffic_mem(priv))
499 IWL_ERR(priv,
500 "Not enough memory to generate traffic log\n");
501 }
502 return strnlen(buf, count);
503 }
504
505 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
506 show_debug_level, store_debug_level);
507
508
509 #endif /* CONFIG_IWLWIFI_DEBUG */
510
511
512 static ssize_t show_temperature(struct device *d,
513 struct device_attribute *attr, char *buf)
514 {
515 struct iwl_priv *priv = dev_get_drvdata(d);
516
517 if (!iwl_is_alive(priv))
518 return -EAGAIN;
519
520 return sprintf(buf, "%d\n", priv->temperature);
521 }
522
523 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
524
525 static ssize_t show_tx_power(struct device *d,
526 struct device_attribute *attr, char *buf)
527 {
528 struct iwl_priv *priv = dev_get_drvdata(d);
529
530 if (!iwl_is_ready_rf(priv))
531 return sprintf(buf, "off\n");
532 else
533 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
534 }
535
536 static ssize_t store_tx_power(struct device *d,
537 struct device_attribute *attr,
538 const char *buf, size_t count)
539 {
540 struct iwl_priv *priv = dev_get_drvdata(d);
541 unsigned long val;
542 int ret;
543
544 ret = strict_strtoul(buf, 10, &val);
545 if (ret)
546 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
547 else {
548 ret = iwl_set_tx_power(priv, val, false);
549 if (ret)
550 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
551 ret);
552 else
553 ret = count;
554 }
555 return ret;
556 }
557
558 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
559
560 static struct attribute *iwl_sysfs_entries[] = {
561 &dev_attr_temperature.attr,
562 &dev_attr_tx_power.attr,
563 #ifdef CONFIG_IWLWIFI_DEBUG
564 &dev_attr_debug_level.attr,
565 #endif
566 NULL
567 };
568
569 static struct attribute_group iwl_attribute_group = {
570 .name = NULL, /* put in device directory */
571 .attrs = iwl_sysfs_entries,
572 };
573
574 /******************************************************************************
575 *
576 * uCode download functions
577 *
578 ******************************************************************************/
579
580 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
581 {
582 if (desc->v_addr)
583 dma_free_coherent(priv->bus->dev, desc->len,
584 desc->v_addr, desc->p_addr);
585 desc->v_addr = NULL;
586 desc->len = 0;
587 }
588
589 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
590 {
591 iwl_free_fw_desc(priv, &img->code);
592 iwl_free_fw_desc(priv, &img->data);
593 }
594
595 static void iwl_dealloc_ucode(struct iwl_priv *priv)
596 {
597 iwl_free_fw_img(priv, &priv->ucode_rt);
598 iwl_free_fw_img(priv, &priv->ucode_init);
599 }
600
601 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
602 const void *data, size_t len)
603 {
604 if (!len) {
605 desc->v_addr = NULL;
606 return -EINVAL;
607 }
608
609 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
610 &desc->p_addr, GFP_KERNEL);
611 if (!desc->v_addr)
612 return -ENOMEM;
613
614 desc->len = len;
615 memcpy(desc->v_addr, data, len);
616 return 0;
617 }
618
619 struct iwlagn_ucode_capabilities {
620 u32 max_probe_length;
621 u32 standard_phy_calibration_size;
622 u32 flags;
623 };
624
625 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
626 static int iwl_mac_setup_register(struct iwl_priv *priv,
627 struct iwlagn_ucode_capabilities *capa);
628
629 #define UCODE_EXPERIMENTAL_INDEX 100
630 #define UCODE_EXPERIMENTAL_TAG "exp"
631
632 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
633 {
634 const char *name_pre = priv->cfg->fw_name_pre;
635 char tag[8];
636
637 if (first) {
638 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
639 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
640 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
641 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
642 #endif
643 priv->fw_index = priv->cfg->ucode_api_max;
644 sprintf(tag, "%d", priv->fw_index);
645 } else {
646 priv->fw_index--;
647 sprintf(tag, "%d", priv->fw_index);
648 }
649
650 if (priv->fw_index < priv->cfg->ucode_api_min) {
651 IWL_ERR(priv, "no suitable firmware found!\n");
652 return -ENOENT;
653 }
654
655 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
656
657 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
658 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
659 ? "EXPERIMENTAL " : "",
660 priv->firmware_name);
661
662 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
663 priv->bus->dev,
664 GFP_KERNEL, priv, iwl_ucode_callback);
665 }
666
667 struct iwlagn_firmware_pieces {
668 const void *inst, *data, *init, *init_data;
669 size_t inst_size, data_size, init_size, init_data_size;
670
671 u32 build;
672
673 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
674 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
675 };
676
677 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
678 const struct firmware *ucode_raw,
679 struct iwlagn_firmware_pieces *pieces)
680 {
681 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
682 u32 api_ver, hdr_size;
683 const u8 *src;
684
685 priv->ucode_ver = le32_to_cpu(ucode->ver);
686 api_ver = IWL_UCODE_API(priv->ucode_ver);
687
688 switch (api_ver) {
689 default:
690 hdr_size = 28;
691 if (ucode_raw->size < hdr_size) {
692 IWL_ERR(priv, "File size too small!\n");
693 return -EINVAL;
694 }
695 pieces->build = le32_to_cpu(ucode->u.v2.build);
696 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
697 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
698 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
699 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
700 src = ucode->u.v2.data;
701 break;
702 case 0:
703 case 1:
704 case 2:
705 hdr_size = 24;
706 if (ucode_raw->size < hdr_size) {
707 IWL_ERR(priv, "File size too small!\n");
708 return -EINVAL;
709 }
710 pieces->build = 0;
711 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
712 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
713 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
714 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
715 src = ucode->u.v1.data;
716 break;
717 }
718
719 /* Verify size of file vs. image size info in file's header */
720 if (ucode_raw->size != hdr_size + pieces->inst_size +
721 pieces->data_size + pieces->init_size +
722 pieces->init_data_size) {
723
724 IWL_ERR(priv,
725 "uCode file size %d does not match expected size\n",
726 (int)ucode_raw->size);
727 return -EINVAL;
728 }
729
730 pieces->inst = src;
731 src += pieces->inst_size;
732 pieces->data = src;
733 src += pieces->data_size;
734 pieces->init = src;
735 src += pieces->init_size;
736 pieces->init_data = src;
737 src += pieces->init_data_size;
738
739 return 0;
740 }
741
742 static int iwlagn_wanted_ucode_alternative = 1;
743
744 static int iwlagn_load_firmware(struct iwl_priv *priv,
745 const struct firmware *ucode_raw,
746 struct iwlagn_firmware_pieces *pieces,
747 struct iwlagn_ucode_capabilities *capa)
748 {
749 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
750 struct iwl_ucode_tlv *tlv;
751 size_t len = ucode_raw->size;
752 const u8 *data;
753 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
754 u64 alternatives;
755 u32 tlv_len;
756 enum iwl_ucode_tlv_type tlv_type;
757 const u8 *tlv_data;
758
759 if (len < sizeof(*ucode)) {
760 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
761 return -EINVAL;
762 }
763
764 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
765 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
766 le32_to_cpu(ucode->magic));
767 return -EINVAL;
768 }
769
770 /*
771 * Check which alternatives are present, and "downgrade"
772 * when the chosen alternative is not present, warning
773 * the user when that happens. Some files may not have
774 * any alternatives, so don't warn in that case.
775 */
776 alternatives = le64_to_cpu(ucode->alternatives);
777 tmp = wanted_alternative;
778 if (wanted_alternative > 63)
779 wanted_alternative = 63;
780 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
781 wanted_alternative--;
782 if (wanted_alternative && wanted_alternative != tmp)
783 IWL_WARN(priv,
784 "uCode alternative %d not available, choosing %d\n",
785 tmp, wanted_alternative);
786
787 priv->ucode_ver = le32_to_cpu(ucode->ver);
788 pieces->build = le32_to_cpu(ucode->build);
789 data = ucode->data;
790
791 len -= sizeof(*ucode);
792
793 while (len >= sizeof(*tlv)) {
794 u16 tlv_alt;
795
796 len -= sizeof(*tlv);
797 tlv = (void *)data;
798
799 tlv_len = le32_to_cpu(tlv->length);
800 tlv_type = le16_to_cpu(tlv->type);
801 tlv_alt = le16_to_cpu(tlv->alternative);
802 tlv_data = tlv->data;
803
804 if (len < tlv_len) {
805 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
806 len, tlv_len);
807 return -EINVAL;
808 }
809 len -= ALIGN(tlv_len, 4);
810 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
811
812 /*
813 * Alternative 0 is always valid.
814 *
815 * Skip alternative TLVs that are not selected.
816 */
817 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
818 continue;
819
820 switch (tlv_type) {
821 case IWL_UCODE_TLV_INST:
822 pieces->inst = tlv_data;
823 pieces->inst_size = tlv_len;
824 break;
825 case IWL_UCODE_TLV_DATA:
826 pieces->data = tlv_data;
827 pieces->data_size = tlv_len;
828 break;
829 case IWL_UCODE_TLV_INIT:
830 pieces->init = tlv_data;
831 pieces->init_size = tlv_len;
832 break;
833 case IWL_UCODE_TLV_INIT_DATA:
834 pieces->init_data = tlv_data;
835 pieces->init_data_size = tlv_len;
836 break;
837 case IWL_UCODE_TLV_BOOT:
838 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
839 break;
840 case IWL_UCODE_TLV_PROBE_MAX_LEN:
841 if (tlv_len != sizeof(u32))
842 goto invalid_tlv_len;
843 capa->max_probe_length =
844 le32_to_cpup((__le32 *)tlv_data);
845 break;
846 case IWL_UCODE_TLV_PAN:
847 if (tlv_len)
848 goto invalid_tlv_len;
849 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
850 break;
851 case IWL_UCODE_TLV_FLAGS:
852 /* must be at least one u32 */
853 if (tlv_len < sizeof(u32))
854 goto invalid_tlv_len;
855 /* and a proper number of u32s */
856 if (tlv_len % sizeof(u32))
857 goto invalid_tlv_len;
858 /*
859 * This driver only reads the first u32 as
860 * right now no more features are defined,
861 * if that changes then either the driver
862 * will not work with the new firmware, or
863 * it'll not take advantage of new features.
864 */
865 capa->flags = le32_to_cpup((__le32 *)tlv_data);
866 break;
867 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
868 if (tlv_len != sizeof(u32))
869 goto invalid_tlv_len;
870 pieces->init_evtlog_ptr =
871 le32_to_cpup((__le32 *)tlv_data);
872 break;
873 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
874 if (tlv_len != sizeof(u32))
875 goto invalid_tlv_len;
876 pieces->init_evtlog_size =
877 le32_to_cpup((__le32 *)tlv_data);
878 break;
879 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
880 if (tlv_len != sizeof(u32))
881 goto invalid_tlv_len;
882 pieces->init_errlog_ptr =
883 le32_to_cpup((__le32 *)tlv_data);
884 break;
885 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
886 if (tlv_len != sizeof(u32))
887 goto invalid_tlv_len;
888 pieces->inst_evtlog_ptr =
889 le32_to_cpup((__le32 *)tlv_data);
890 break;
891 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
892 if (tlv_len != sizeof(u32))
893 goto invalid_tlv_len;
894 pieces->inst_evtlog_size =
895 le32_to_cpup((__le32 *)tlv_data);
896 break;
897 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
898 if (tlv_len != sizeof(u32))
899 goto invalid_tlv_len;
900 pieces->inst_errlog_ptr =
901 le32_to_cpup((__le32 *)tlv_data);
902 break;
903 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
904 if (tlv_len)
905 goto invalid_tlv_len;
906 priv->enhance_sensitivity_table = true;
907 break;
908 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
909 if (tlv_len != sizeof(u32))
910 goto invalid_tlv_len;
911 capa->standard_phy_calibration_size =
912 le32_to_cpup((__le32 *)tlv_data);
913 break;
914 default:
915 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
916 break;
917 }
918 }
919
920 if (len) {
921 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
922 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
923 return -EINVAL;
924 }
925
926 return 0;
927
928 invalid_tlv_len:
929 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
930 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
931
932 return -EINVAL;
933 }
934
935 /**
936 * iwl_ucode_callback - callback when firmware was loaded
937 *
938 * If loaded successfully, copies the firmware into buffers
939 * for the card to fetch (via DMA).
940 */
941 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
942 {
943 struct iwl_priv *priv = context;
944 struct iwl_ucode_header *ucode;
945 int err;
946 struct iwlagn_firmware_pieces pieces;
947 const unsigned int api_max = priv->cfg->ucode_api_max;
948 const unsigned int api_min = priv->cfg->ucode_api_min;
949 u32 api_ver;
950 char buildstr[25];
951 u32 build;
952 struct iwlagn_ucode_capabilities ucode_capa = {
953 .max_probe_length = 200,
954 .standard_phy_calibration_size =
955 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
956 };
957
958 memset(&pieces, 0, sizeof(pieces));
959
960 if (!ucode_raw) {
961 if (priv->fw_index <= priv->cfg->ucode_api_max)
962 IWL_ERR(priv,
963 "request for firmware file '%s' failed.\n",
964 priv->firmware_name);
965 goto try_again;
966 }
967
968 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
969 priv->firmware_name, ucode_raw->size);
970
971 /* Make sure that we got at least the API version number */
972 if (ucode_raw->size < 4) {
973 IWL_ERR(priv, "File size way too small!\n");
974 goto try_again;
975 }
976
977 /* Data from ucode file: header followed by uCode images */
978 ucode = (struct iwl_ucode_header *)ucode_raw->data;
979
980 if (ucode->ver)
981 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
982 else
983 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
984 &ucode_capa);
985
986 if (err)
987 goto try_again;
988
989 api_ver = IWL_UCODE_API(priv->ucode_ver);
990 build = pieces.build;
991
992 /*
993 * api_ver should match the api version forming part of the
994 * firmware filename ... but we don't check for that and only rely
995 * on the API version read from firmware header from here on forward
996 */
997 /* no api version check required for experimental uCode */
998 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
999 if (api_ver < api_min || api_ver > api_max) {
1000 IWL_ERR(priv,
1001 "Driver unable to support your firmware API. "
1002 "Driver supports v%u, firmware is v%u.\n",
1003 api_max, api_ver);
1004 goto try_again;
1005 }
1006
1007 if (api_ver != api_max)
1008 IWL_ERR(priv,
1009 "Firmware has old API version. Expected v%u, "
1010 "got v%u. New firmware can be obtained "
1011 "from http://www.intellinuxwireless.org.\n",
1012 api_max, api_ver);
1013 }
1014
1015 if (build)
1016 sprintf(buildstr, " build %u%s", build,
1017 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1018 ? " (EXP)" : "");
1019 else
1020 buildstr[0] = '\0';
1021
1022 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1023 IWL_UCODE_MAJOR(priv->ucode_ver),
1024 IWL_UCODE_MINOR(priv->ucode_ver),
1025 IWL_UCODE_API(priv->ucode_ver),
1026 IWL_UCODE_SERIAL(priv->ucode_ver),
1027 buildstr);
1028
1029 snprintf(priv->hw->wiphy->fw_version,
1030 sizeof(priv->hw->wiphy->fw_version),
1031 "%u.%u.%u.%u%s",
1032 IWL_UCODE_MAJOR(priv->ucode_ver),
1033 IWL_UCODE_MINOR(priv->ucode_ver),
1034 IWL_UCODE_API(priv->ucode_ver),
1035 IWL_UCODE_SERIAL(priv->ucode_ver),
1036 buildstr);
1037
1038 /*
1039 * For any of the failures below (before allocating pci memory)
1040 * we will try to load a version with a smaller API -- maybe the
1041 * user just got a corrupted version of the latest API.
1042 */
1043
1044 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1045 priv->ucode_ver);
1046 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1047 pieces.inst_size);
1048 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1049 pieces.data_size);
1050 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1051 pieces.init_size);
1052 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1053 pieces.init_data_size);
1054
1055 /* Verify that uCode images will fit in card's SRAM */
1056 if (pieces.inst_size > priv->hw_params.max_inst_size) {
1057 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1058 pieces.inst_size);
1059 goto try_again;
1060 }
1061
1062 if (pieces.data_size > priv->hw_params.max_data_size) {
1063 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1064 pieces.data_size);
1065 goto try_again;
1066 }
1067
1068 if (pieces.init_size > priv->hw_params.max_inst_size) {
1069 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1070 pieces.init_size);
1071 goto try_again;
1072 }
1073
1074 if (pieces.init_data_size > priv->hw_params.max_data_size) {
1075 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1076 pieces.init_data_size);
1077 goto try_again;
1078 }
1079
1080 /* Allocate ucode buffers for card's bus-master loading ... */
1081
1082 /* Runtime instructions and 2 copies of data:
1083 * 1) unmodified from disk
1084 * 2) backup cache for save/restore during power-downs */
1085 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1086 pieces.inst, pieces.inst_size))
1087 goto err_pci_alloc;
1088 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1089 pieces.data, pieces.data_size))
1090 goto err_pci_alloc;
1091
1092 /* Initialization instructions and data */
1093 if (pieces.init_size && pieces.init_data_size) {
1094 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1095 pieces.init, pieces.init_size))
1096 goto err_pci_alloc;
1097 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1098 pieces.init_data, pieces.init_data_size))
1099 goto err_pci_alloc;
1100 }
1101
1102 /* Now that we can no longer fail, copy information */
1103
1104 /*
1105 * The (size - 16) / 12 formula is based on the information recorded
1106 * for each event, which is of mode 1 (including timestamp) for all
1107 * new microcodes that include this information.
1108 */
1109 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
1110 if (pieces.init_evtlog_size)
1111 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1112 else
1113 priv->_agn.init_evtlog_size =
1114 priv->cfg->base_params->max_event_log_size;
1115 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
1116 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1117 if (pieces.inst_evtlog_size)
1118 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1119 else
1120 priv->_agn.inst_evtlog_size =
1121 priv->cfg->base_params->max_event_log_size;
1122 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
1123
1124 priv->new_scan_threshold_behaviour =
1125 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1126
1127 if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1128 (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1129 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1130 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1131 } else
1132 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1133
1134 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1135 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1136 else
1137 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1138
1139 /*
1140 * figure out the offset of chain noise reset and gain commands
1141 * base on the size of standard phy calibration commands table size
1142 */
1143 if (ucode_capa.standard_phy_calibration_size >
1144 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1145 ucode_capa.standard_phy_calibration_size =
1146 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1147
1148 priv->_agn.phy_calib_chain_noise_reset_cmd =
1149 ucode_capa.standard_phy_calibration_size;
1150 priv->_agn.phy_calib_chain_noise_gain_cmd =
1151 ucode_capa.standard_phy_calibration_size + 1;
1152
1153 /**************************************************
1154 * This is still part of probe() in a sense...
1155 *
1156 * 9. Setup and register with mac80211 and debugfs
1157 **************************************************/
1158 err = iwl_mac_setup_register(priv, &ucode_capa);
1159 if (err)
1160 goto out_unbind;
1161
1162 err = iwl_dbgfs_register(priv, DRV_NAME);
1163 if (err)
1164 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1165
1166 err = sysfs_create_group(&(priv->bus->dev->kobj),
1167 &iwl_attribute_group);
1168 if (err) {
1169 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1170 goto out_unbind;
1171 }
1172
1173 /* We have our copies now, allow OS release its copies */
1174 release_firmware(ucode_raw);
1175 complete(&priv->_agn.firmware_loading_complete);
1176 return;
1177
1178 try_again:
1179 /* try next, if any */
1180 if (iwl_request_firmware(priv, false))
1181 goto out_unbind;
1182 release_firmware(ucode_raw);
1183 return;
1184
1185 err_pci_alloc:
1186 IWL_ERR(priv, "failed to allocate pci memory\n");
1187 iwl_dealloc_ucode(priv);
1188 out_unbind:
1189 complete(&priv->_agn.firmware_loading_complete);
1190 device_release_driver(priv->bus->dev);
1191 release_firmware(ucode_raw);
1192 }
1193
1194 static const char * const desc_lookup_text[] = {
1195 "OK",
1196 "FAIL",
1197 "BAD_PARAM",
1198 "BAD_CHECKSUM",
1199 "NMI_INTERRUPT_WDG",
1200 "SYSASSERT",
1201 "FATAL_ERROR",
1202 "BAD_COMMAND",
1203 "HW_ERROR_TUNE_LOCK",
1204 "HW_ERROR_TEMPERATURE",
1205 "ILLEGAL_CHAN_FREQ",
1206 "VCC_NOT_STABLE",
1207 "FH_ERROR",
1208 "NMI_INTERRUPT_HOST",
1209 "NMI_INTERRUPT_ACTION_PT",
1210 "NMI_INTERRUPT_UNKNOWN",
1211 "UCODE_VERSION_MISMATCH",
1212 "HW_ERROR_ABS_LOCK",
1213 "HW_ERROR_CAL_LOCK_FAIL",
1214 "NMI_INTERRUPT_INST_ACTION_PT",
1215 "NMI_INTERRUPT_DATA_ACTION_PT",
1216 "NMI_TRM_HW_ER",
1217 "NMI_INTERRUPT_TRM",
1218 "NMI_INTERRUPT_BREAK_POINT",
1219 "DEBUG_0",
1220 "DEBUG_1",
1221 "DEBUG_2",
1222 "DEBUG_3",
1223 };
1224
1225 static struct { char *name; u8 num; } advanced_lookup[] = {
1226 { "NMI_INTERRUPT_WDG", 0x34 },
1227 { "SYSASSERT", 0x35 },
1228 { "UCODE_VERSION_MISMATCH", 0x37 },
1229 { "BAD_COMMAND", 0x38 },
1230 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1231 { "FATAL_ERROR", 0x3D },
1232 { "NMI_TRM_HW_ERR", 0x46 },
1233 { "NMI_INTERRUPT_TRM", 0x4C },
1234 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1235 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1236 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1237 { "NMI_INTERRUPT_HOST", 0x66 },
1238 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1239 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1240 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1241 { "ADVANCED_SYSASSERT", 0 },
1242 };
1243
1244 static const char *desc_lookup(u32 num)
1245 {
1246 int i;
1247 int max = ARRAY_SIZE(desc_lookup_text);
1248
1249 if (num < max)
1250 return desc_lookup_text[num];
1251
1252 max = ARRAY_SIZE(advanced_lookup) - 1;
1253 for (i = 0; i < max; i++) {
1254 if (advanced_lookup[i].num == num)
1255 break;
1256 }
1257 return advanced_lookup[i].name;
1258 }
1259
1260 #define ERROR_START_OFFSET (1 * sizeof(u32))
1261 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1262
1263 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1264 {
1265 u32 base;
1266 struct iwl_error_event_table table;
1267
1268 base = priv->device_pointers.error_event_table;
1269 if (priv->ucode_type == IWL_UCODE_INIT) {
1270 if (!base)
1271 base = priv->_agn.init_errlog_ptr;
1272 } else {
1273 if (!base)
1274 base = priv->_agn.inst_errlog_ptr;
1275 }
1276
1277 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1278 IWL_ERR(priv,
1279 "Not valid error log pointer 0x%08X for %s uCode\n",
1280 base,
1281 (priv->ucode_type == IWL_UCODE_INIT)
1282 ? "Init" : "RT");
1283 return;
1284 }
1285
1286 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1287
1288 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1289 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1290 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1291 priv->status, table.valid);
1292 }
1293
1294 priv->isr_stats.err_code = table.error_id;
1295
1296 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1297 table.data1, table.data2, table.line,
1298 table.blink1, table.blink2, table.ilink1,
1299 table.ilink2, table.bcon_time, table.gp1,
1300 table.gp2, table.gp3, table.ucode_ver,
1301 table.hw_ver, table.brd_ver);
1302 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1303 desc_lookup(table.error_id));
1304 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1305 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1306 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1307 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1308 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1309 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1310 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1311 IWL_ERR(priv, "0x%08X | line\n", table.line);
1312 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1313 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1314 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1315 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1316 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1317 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1318 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1319 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1320 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1321 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1322 }
1323
1324 #define EVENT_START_OFFSET (4 * sizeof(u32))
1325
1326 /**
1327 * iwl_print_event_log - Dump error event log to syslog
1328 *
1329 */
1330 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1331 u32 num_events, u32 mode,
1332 int pos, char **buf, size_t bufsz)
1333 {
1334 u32 i;
1335 u32 base; /* SRAM byte address of event log header */
1336 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1337 u32 ptr; /* SRAM byte address of log data */
1338 u32 ev, time, data; /* event log data */
1339 unsigned long reg_flags;
1340
1341 if (num_events == 0)
1342 return pos;
1343
1344 base = priv->device_pointers.log_event_table;
1345 if (priv->ucode_type == IWL_UCODE_INIT) {
1346 if (!base)
1347 base = priv->_agn.init_evtlog_ptr;
1348 } else {
1349 if (!base)
1350 base = priv->_agn.inst_evtlog_ptr;
1351 }
1352
1353 if (mode == 0)
1354 event_size = 2 * sizeof(u32);
1355 else
1356 event_size = 3 * sizeof(u32);
1357
1358 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1359
1360 /* Make sure device is powered up for SRAM reads */
1361 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1362 iwl_grab_nic_access(priv);
1363
1364 /* Set starting address; reads will auto-increment */
1365 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1366 rmb();
1367
1368 /* "time" is actually "data" for mode 0 (no timestamp).
1369 * place event id # at far right for easier visual parsing. */
1370 for (i = 0; i < num_events; i++) {
1371 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1372 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1373 if (mode == 0) {
1374 /* data, ev */
1375 if (bufsz) {
1376 pos += scnprintf(*buf + pos, bufsz - pos,
1377 "EVT_LOG:0x%08x:%04u\n",
1378 time, ev);
1379 } else {
1380 trace_iwlwifi_dev_ucode_event(priv, 0,
1381 time, ev);
1382 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1383 time, ev);
1384 }
1385 } else {
1386 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1387 if (bufsz) {
1388 pos += scnprintf(*buf + pos, bufsz - pos,
1389 "EVT_LOGT:%010u:0x%08x:%04u\n",
1390 time, data, ev);
1391 } else {
1392 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1393 time, data, ev);
1394 trace_iwlwifi_dev_ucode_event(priv, time,
1395 data, ev);
1396 }
1397 }
1398 }
1399
1400 /* Allow device to power down */
1401 iwl_release_nic_access(priv);
1402 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1403 return pos;
1404 }
1405
1406 /**
1407 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1408 */
1409 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1410 u32 num_wraps, u32 next_entry,
1411 u32 size, u32 mode,
1412 int pos, char **buf, size_t bufsz)
1413 {
1414 /*
1415 * display the newest DEFAULT_LOG_ENTRIES entries
1416 * i.e the entries just before the next ont that uCode would fill.
1417 */
1418 if (num_wraps) {
1419 if (next_entry < size) {
1420 pos = iwl_print_event_log(priv,
1421 capacity - (size - next_entry),
1422 size - next_entry, mode,
1423 pos, buf, bufsz);
1424 pos = iwl_print_event_log(priv, 0,
1425 next_entry, mode,
1426 pos, buf, bufsz);
1427 } else
1428 pos = iwl_print_event_log(priv, next_entry - size,
1429 size, mode, pos, buf, bufsz);
1430 } else {
1431 if (next_entry < size) {
1432 pos = iwl_print_event_log(priv, 0, next_entry,
1433 mode, pos, buf, bufsz);
1434 } else {
1435 pos = iwl_print_event_log(priv, next_entry - size,
1436 size, mode, pos, buf, bufsz);
1437 }
1438 }
1439 return pos;
1440 }
1441
1442 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1443
1444 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1445 char **buf, bool display)
1446 {
1447 u32 base; /* SRAM byte address of event log header */
1448 u32 capacity; /* event log capacity in # entries */
1449 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1450 u32 num_wraps; /* # times uCode wrapped to top of log */
1451 u32 next_entry; /* index of next entry to be written by uCode */
1452 u32 size; /* # entries that we'll print */
1453 u32 logsize;
1454 int pos = 0;
1455 size_t bufsz = 0;
1456
1457 base = priv->device_pointers.log_event_table;
1458 if (priv->ucode_type == IWL_UCODE_INIT) {
1459 logsize = priv->_agn.init_evtlog_size;
1460 if (!base)
1461 base = priv->_agn.init_evtlog_ptr;
1462 } else {
1463 logsize = priv->_agn.inst_evtlog_size;
1464 if (!base)
1465 base = priv->_agn.inst_evtlog_ptr;
1466 }
1467
1468 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1469 IWL_ERR(priv,
1470 "Invalid event log pointer 0x%08X for %s uCode\n",
1471 base,
1472 (priv->ucode_type == IWL_UCODE_INIT)
1473 ? "Init" : "RT");
1474 return -EINVAL;
1475 }
1476
1477 /* event log header */
1478 capacity = iwl_read_targ_mem(priv, base);
1479 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1480 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1481 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1482
1483 if (capacity > logsize) {
1484 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1485 capacity, logsize);
1486 capacity = logsize;
1487 }
1488
1489 if (next_entry > logsize) {
1490 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1491 next_entry, logsize);
1492 next_entry = logsize;
1493 }
1494
1495 size = num_wraps ? capacity : next_entry;
1496
1497 /* bail out if nothing in log */
1498 if (size == 0) {
1499 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1500 return pos;
1501 }
1502
1503 /* enable/disable bt channel inhibition */
1504 priv->bt_ch_announce = iwlagn_bt_ch_announce;
1505
1506 #ifdef CONFIG_IWLWIFI_DEBUG
1507 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1508 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1509 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1510 #else
1511 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1512 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1513 #endif
1514 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1515 size);
1516
1517 #ifdef CONFIG_IWLWIFI_DEBUG
1518 if (display) {
1519 if (full_log)
1520 bufsz = capacity * 48;
1521 else
1522 bufsz = size * 48;
1523 *buf = kmalloc(bufsz, GFP_KERNEL);
1524 if (!*buf)
1525 return -ENOMEM;
1526 }
1527 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1528 /*
1529 * if uCode has wrapped back to top of log,
1530 * start at the oldest entry,
1531 * i.e the next one that uCode would fill.
1532 */
1533 if (num_wraps)
1534 pos = iwl_print_event_log(priv, next_entry,
1535 capacity - next_entry, mode,
1536 pos, buf, bufsz);
1537 /* (then/else) start at top of log */
1538 pos = iwl_print_event_log(priv, 0,
1539 next_entry, mode, pos, buf, bufsz);
1540 } else
1541 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1542 next_entry, size, mode,
1543 pos, buf, bufsz);
1544 #else
1545 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1546 next_entry, size, mode,
1547 pos, buf, bufsz);
1548 #endif
1549 return pos;
1550 }
1551
1552 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1553 {
1554 struct iwl_ct_kill_config cmd;
1555 struct iwl_ct_kill_throttling_config adv_cmd;
1556 unsigned long flags;
1557 int ret = 0;
1558
1559 spin_lock_irqsave(&priv->lock, flags);
1560 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1561 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1562 spin_unlock_irqrestore(&priv->lock, flags);
1563 priv->thermal_throttle.ct_kill_toggle = false;
1564
1565 if (priv->cfg->base_params->support_ct_kill_exit) {
1566 adv_cmd.critical_temperature_enter =
1567 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1568 adv_cmd.critical_temperature_exit =
1569 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1570
1571 ret = trans_send_cmd_pdu(&priv->trans,
1572 REPLY_CT_KILL_CONFIG_CMD,
1573 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1574 if (ret)
1575 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1576 else
1577 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1578 "succeeded, "
1579 "critical temperature enter is %d,"
1580 "exit is %d\n",
1581 priv->hw_params.ct_kill_threshold,
1582 priv->hw_params.ct_kill_exit_threshold);
1583 } else {
1584 cmd.critical_temperature_R =
1585 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1586
1587 ret = trans_send_cmd_pdu(&priv->trans,
1588 REPLY_CT_KILL_CONFIG_CMD,
1589 CMD_SYNC, sizeof(cmd), &cmd);
1590 if (ret)
1591 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1592 else
1593 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1594 "succeeded, "
1595 "critical temperature is %d\n",
1596 priv->hw_params.ct_kill_threshold);
1597 }
1598 }
1599
1600 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1601 {
1602 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1603 struct iwl_host_cmd cmd = {
1604 .id = CALIBRATION_CFG_CMD,
1605 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1606 .data = { &calib_cfg_cmd, },
1607 };
1608
1609 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1610 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1611 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1612
1613 return trans_send_cmd(&priv->trans, &cmd);
1614 }
1615
1616
1617 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1618 {
1619 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1620 .valid = cpu_to_le32(valid_tx_ant),
1621 };
1622
1623 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1624 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1625 return trans_send_cmd_pdu(&priv->trans,
1626 TX_ANT_CONFIGURATION_CMD,
1627 CMD_SYNC,
1628 sizeof(struct iwl_tx_ant_config_cmd),
1629 &tx_ant_cmd);
1630 } else {
1631 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1632 return -EOPNOTSUPP;
1633 }
1634 }
1635
1636 /**
1637 * iwl_alive_start - called after REPLY_ALIVE notification received
1638 * from protocol/runtime uCode (initialization uCode's
1639 * Alive gets handled by iwl_init_alive_start()).
1640 */
1641 int iwl_alive_start(struct iwl_priv *priv)
1642 {
1643 int ret = 0;
1644 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1645
1646 /*TODO: this should go to the transport layer */
1647 iwl_reset_ict(priv);
1648
1649 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1650
1651 /* After the ALIVE response, we can send host commands to the uCode */
1652 set_bit(STATUS_ALIVE, &priv->status);
1653
1654 /* Enable watchdog to monitor the driver tx queues */
1655 iwl_setup_watchdog(priv);
1656
1657 if (iwl_is_rfkill(priv))
1658 return -ERFKILL;
1659
1660 /* download priority table before any calibration request */
1661 if (priv->cfg->bt_params &&
1662 priv->cfg->bt_params->advanced_bt_coexist) {
1663 /* Configure Bluetooth device coexistence support */
1664 if (priv->cfg->bt_params->bt_sco_disable)
1665 priv->bt_enable_pspoll = false;
1666 else
1667 priv->bt_enable_pspoll = true;
1668
1669 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1670 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1671 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1672 iwlagn_send_advance_bt_config(priv);
1673 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1674 priv->cur_rssi_ctx = NULL;
1675
1676 iwlagn_send_prio_tbl(priv);
1677
1678 /* FIXME: w/a to force change uCode BT state machine */
1679 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1680 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1681 if (ret)
1682 return ret;
1683 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1684 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1685 if (ret)
1686 return ret;
1687 } else {
1688 /*
1689 * default is 2-wire BT coexexistence support
1690 */
1691 iwl_send_bt_config(priv);
1692 }
1693
1694 if (priv->hw_params.calib_rt_cfg)
1695 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
1696
1697 ieee80211_wake_queues(priv->hw);
1698
1699 priv->active_rate = IWL_RATES_MASK;
1700
1701 /* Configure Tx antenna selection based on H/W config */
1702 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1703
1704 if (iwl_is_associated_ctx(ctx)) {
1705 struct iwl_rxon_cmd *active_rxon =
1706 (struct iwl_rxon_cmd *)&ctx->active;
1707 /* apply any changes in staging */
1708 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1709 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1710 } else {
1711 struct iwl_rxon_context *tmp;
1712 /* Initialize our rx_config data */
1713 for_each_context(priv, tmp)
1714 iwl_connection_init_rx_config(priv, tmp);
1715
1716 iwlagn_set_rxon_chain(priv, ctx);
1717 }
1718
1719 iwl_reset_run_time_calib(priv);
1720
1721 set_bit(STATUS_READY, &priv->status);
1722
1723 /* Configure the adapter for unassociated operation */
1724 ret = iwlagn_commit_rxon(priv, ctx);
1725 if (ret)
1726 return ret;
1727
1728 /* At this point, the NIC is initialized and operational */
1729 iwl_rf_kill_ct_config(priv);
1730
1731 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1732
1733 return iwl_power_update_mode(priv, true);
1734 }
1735
1736 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1737
1738 static void __iwl_down(struct iwl_priv *priv)
1739 {
1740 int exit_pending;
1741
1742 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1743
1744 iwl_scan_cancel_timeout(priv, 200);
1745
1746 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1747
1748 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1749 * to prevent rearm timer */
1750 del_timer_sync(&priv->watchdog);
1751
1752 iwl_clear_ucode_stations(priv, NULL);
1753 iwl_dealloc_bcast_stations(priv);
1754 iwl_clear_driver_stations(priv);
1755
1756 /* reset BT coex data */
1757 priv->bt_status = 0;
1758 priv->cur_rssi_ctx = NULL;
1759 priv->bt_is_sco = 0;
1760 if (priv->cfg->bt_params)
1761 priv->bt_traffic_load =
1762 priv->cfg->bt_params->bt_init_traffic_load;
1763 else
1764 priv->bt_traffic_load = 0;
1765 priv->bt_full_concurrent = false;
1766 priv->bt_ci_compliance = 0;
1767
1768 /* Wipe out the EXIT_PENDING status bit if we are not actually
1769 * exiting the module */
1770 if (!exit_pending)
1771 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1772
1773 if (priv->mac80211_registered)
1774 ieee80211_stop_queues(priv->hw);
1775
1776 /* Clear out all status bits but a few that are stable across reset */
1777 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1778 STATUS_RF_KILL_HW |
1779 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1780 STATUS_GEO_CONFIGURED |
1781 test_bit(STATUS_FW_ERROR, &priv->status) <<
1782 STATUS_FW_ERROR |
1783 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1784 STATUS_EXIT_PENDING;
1785
1786 trans_stop_device(&priv->trans);
1787
1788 dev_kfree_skb(priv->beacon_skb);
1789 priv->beacon_skb = NULL;
1790 }
1791
1792 static void iwl_down(struct iwl_priv *priv)
1793 {
1794 mutex_lock(&priv->mutex);
1795 __iwl_down(priv);
1796 mutex_unlock(&priv->mutex);
1797
1798 iwl_cancel_deferred_work(priv);
1799 }
1800
1801 #define MAX_HW_RESTARTS 5
1802
1803 static int __iwl_up(struct iwl_priv *priv)
1804 {
1805 struct iwl_rxon_context *ctx;
1806 int ret;
1807
1808 lockdep_assert_held(&priv->mutex);
1809
1810 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1811 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1812 return -EIO;
1813 }
1814
1815 for_each_context(priv, ctx) {
1816 ret = iwlagn_alloc_bcast_station(priv, ctx);
1817 if (ret) {
1818 iwl_dealloc_bcast_stations(priv);
1819 return ret;
1820 }
1821 }
1822
1823 ret = iwlagn_run_init_ucode(priv);
1824 if (ret) {
1825 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1826 goto error;
1827 }
1828
1829 ret = iwlagn_load_ucode_wait_alive(priv,
1830 &priv->ucode_rt,
1831 IWL_UCODE_REGULAR);
1832 if (ret) {
1833 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1834 goto error;
1835 }
1836
1837 ret = iwl_alive_start(priv);
1838 if (ret)
1839 goto error;
1840 return 0;
1841
1842 error:
1843 set_bit(STATUS_EXIT_PENDING, &priv->status);
1844 __iwl_down(priv);
1845 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1846
1847 IWL_ERR(priv, "Unable to initialize device.\n");
1848 return ret;
1849 }
1850
1851
1852 /*****************************************************************************
1853 *
1854 * Workqueue callbacks
1855 *
1856 *****************************************************************************/
1857
1858 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1859 {
1860 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1861 run_time_calib_work);
1862
1863 mutex_lock(&priv->mutex);
1864
1865 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1866 test_bit(STATUS_SCANNING, &priv->status)) {
1867 mutex_unlock(&priv->mutex);
1868 return;
1869 }
1870
1871 if (priv->start_calib) {
1872 iwl_chain_noise_calibration(priv);
1873 iwl_sensitivity_calibration(priv);
1874 }
1875
1876 mutex_unlock(&priv->mutex);
1877 }
1878
1879 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1880 {
1881 struct iwl_rxon_context *ctx;
1882 bool bt_full_concurrent;
1883 u8 bt_ci_compliance;
1884 u8 bt_load;
1885 u8 bt_status;
1886 bool bt_is_sco;
1887
1888 lockdep_assert_held(&priv->mutex);
1889
1890 for_each_context(priv, ctx)
1891 ctx->vif = NULL;
1892 priv->is_open = 0;
1893
1894 /*
1895 * __iwl_down() will clear the BT status variables,
1896 * which is correct, but when we restart we really
1897 * want to keep them so restore them afterwards.
1898 *
1899 * The restart process will later pick them up and
1900 * re-configure the hw when we reconfigure the BT
1901 * command.
1902 */
1903 bt_full_concurrent = priv->bt_full_concurrent;
1904 bt_ci_compliance = priv->bt_ci_compliance;
1905 bt_load = priv->bt_traffic_load;
1906 bt_status = priv->bt_status;
1907 bt_is_sco = priv->bt_is_sco;
1908
1909 __iwl_down(priv);
1910
1911 priv->bt_full_concurrent = bt_full_concurrent;
1912 priv->bt_ci_compliance = bt_ci_compliance;
1913 priv->bt_traffic_load = bt_load;
1914 priv->bt_status = bt_status;
1915 priv->bt_is_sco = bt_is_sco;
1916 }
1917
1918 static void iwl_bg_restart(struct work_struct *data)
1919 {
1920 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1921
1922 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1923 return;
1924
1925 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1926 mutex_lock(&priv->mutex);
1927 iwlagn_prepare_restart(priv);
1928 mutex_unlock(&priv->mutex);
1929 iwl_cancel_deferred_work(priv);
1930 ieee80211_restart_hw(priv->hw);
1931 } else {
1932 WARN_ON(1);
1933 }
1934 }
1935
1936 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
1937 struct ieee80211_channel *chan,
1938 enum nl80211_channel_type channel_type,
1939 unsigned int wait)
1940 {
1941 struct iwl_priv *priv = hw->priv;
1942 int ret;
1943
1944 /* Not supported if we don't have PAN */
1945 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
1946 ret = -EOPNOTSUPP;
1947 goto free;
1948 }
1949
1950 /* Not supported on pre-P2P firmware */
1951 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
1952 BIT(NL80211_IFTYPE_P2P_CLIENT))) {
1953 ret = -EOPNOTSUPP;
1954 goto free;
1955 }
1956
1957 mutex_lock(&priv->mutex);
1958
1959 if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
1960 /*
1961 * If the PAN context is free, use the normal
1962 * way of doing remain-on-channel offload + TX.
1963 */
1964 ret = 1;
1965 goto out;
1966 }
1967
1968 /* TODO: queue up if scanning? */
1969 if (test_bit(STATUS_SCANNING, &priv->status) ||
1970 priv->_agn.offchan_tx_skb) {
1971 ret = -EBUSY;
1972 goto out;
1973 }
1974
1975 /*
1976 * max_scan_ie_len doesn't include the blank SSID or the header,
1977 * so need to add that again here.
1978 */
1979 if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
1980 ret = -ENOBUFS;
1981 goto out;
1982 }
1983
1984 priv->_agn.offchan_tx_skb = skb;
1985 priv->_agn.offchan_tx_timeout = wait;
1986 priv->_agn.offchan_tx_chan = chan;
1987
1988 ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
1989 IWL_SCAN_OFFCH_TX, chan->band);
1990 if (ret)
1991 priv->_agn.offchan_tx_skb = NULL;
1992 out:
1993 mutex_unlock(&priv->mutex);
1994 free:
1995 if (ret < 0)
1996 kfree_skb(skb);
1997
1998 return ret;
1999 }
2000
2001 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2002 {
2003 struct iwl_priv *priv = hw->priv;
2004 int ret;
2005
2006 mutex_lock(&priv->mutex);
2007
2008 if (!priv->_agn.offchan_tx_skb) {
2009 ret = -EINVAL;
2010 goto unlock;
2011 }
2012
2013 priv->_agn.offchan_tx_skb = NULL;
2014
2015 ret = iwl_scan_cancel_timeout(priv, 200);
2016 if (ret)
2017 ret = -EIO;
2018 unlock:
2019 mutex_unlock(&priv->mutex);
2020
2021 return ret;
2022 }
2023
2024 /*****************************************************************************
2025 *
2026 * mac80211 entry point functions
2027 *
2028 *****************************************************************************/
2029
2030 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2031 {
2032 .max = 1,
2033 .types = BIT(NL80211_IFTYPE_STATION),
2034 },
2035 {
2036 .max = 1,
2037 .types = BIT(NL80211_IFTYPE_AP),
2038 },
2039 };
2040
2041 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2042 {
2043 .max = 2,
2044 .types = BIT(NL80211_IFTYPE_STATION),
2045 },
2046 };
2047
2048 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2049 {
2050 .max = 1,
2051 .types = BIT(NL80211_IFTYPE_STATION),
2052 },
2053 {
2054 .max = 1,
2055 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2056 BIT(NL80211_IFTYPE_AP),
2057 },
2058 };
2059
2060 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2061 {
2062 .max = 2,
2063 .types = BIT(NL80211_IFTYPE_STATION),
2064 },
2065 {
2066 .max = 1,
2067 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2068 },
2069 };
2070
2071 static const struct ieee80211_iface_combination
2072 iwlagn_iface_combinations_dualmode[] = {
2073 { .num_different_channels = 1,
2074 .max_interfaces = 2,
2075 .beacon_int_infra_match = true,
2076 .limits = iwlagn_sta_ap_limits,
2077 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2078 },
2079 { .num_different_channels = 1,
2080 .max_interfaces = 2,
2081 .limits = iwlagn_2sta_limits,
2082 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2083 },
2084 };
2085
2086 static const struct ieee80211_iface_combination
2087 iwlagn_iface_combinations_p2p[] = {
2088 { .num_different_channels = 1,
2089 .max_interfaces = 2,
2090 .beacon_int_infra_match = true,
2091 .limits = iwlagn_p2p_sta_go_limits,
2092 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2093 },
2094 { .num_different_channels = 1,
2095 .max_interfaces = 2,
2096 .limits = iwlagn_p2p_2sta_limits,
2097 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2098 },
2099 };
2100
2101 /*
2102 * Not a mac80211 entry point function, but it fits in with all the
2103 * other mac80211 functions grouped here.
2104 */
2105 static int iwl_mac_setup_register(struct iwl_priv *priv,
2106 struct iwlagn_ucode_capabilities *capa)
2107 {
2108 int ret;
2109 struct ieee80211_hw *hw = priv->hw;
2110 struct iwl_rxon_context *ctx;
2111
2112 hw->rate_control_algorithm = "iwl-agn-rs";
2113
2114 /* Tell mac80211 our characteristics */
2115 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2116 IEEE80211_HW_AMPDU_AGGREGATION |
2117 IEEE80211_HW_NEED_DTIM_PERIOD |
2118 IEEE80211_HW_SPECTRUM_MGMT |
2119 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2120
2121 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2122
2123 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2124 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2125
2126 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2127 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2128 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2129
2130 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2131 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2132
2133 hw->sta_data_size = sizeof(struct iwl_station_priv);
2134 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2135
2136 for_each_context(priv, ctx) {
2137 hw->wiphy->interface_modes |= ctx->interface_modes;
2138 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2139 }
2140
2141 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2142
2143 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2144 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2145 hw->wiphy->n_iface_combinations =
2146 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2147 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2148 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2149 hw->wiphy->n_iface_combinations =
2150 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2151 }
2152
2153 hw->wiphy->max_remain_on_channel_duration = 1000;
2154
2155 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2156 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2157 WIPHY_FLAG_IBSS_RSN;
2158
2159 if (iwlagn_mod_params.power_save)
2160 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2161 else
2162 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2163
2164 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2165 /* we create the 802.11 header and a zero-length SSID element */
2166 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2167
2168 /* Default value; 4 EDCA QOS priorities */
2169 hw->queues = 4;
2170
2171 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2172
2173 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2174 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2175 &priv->bands[IEEE80211_BAND_2GHZ];
2176 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2177 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2178 &priv->bands[IEEE80211_BAND_5GHZ];
2179
2180 iwl_leds_init(priv);
2181
2182 ret = ieee80211_register_hw(priv->hw);
2183 if (ret) {
2184 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2185 return ret;
2186 }
2187 priv->mac80211_registered = 1;
2188
2189 return 0;
2190 }
2191
2192
2193 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2194 {
2195 struct iwl_priv *priv = hw->priv;
2196 int ret;
2197
2198 IWL_DEBUG_MAC80211(priv, "enter\n");
2199
2200 /* we should be verifying the device is ready to be opened */
2201 mutex_lock(&priv->mutex);
2202 ret = __iwl_up(priv);
2203 mutex_unlock(&priv->mutex);
2204 if (ret)
2205 return ret;
2206
2207 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2208
2209 /* Now we should be done, and the READY bit should be set. */
2210 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2211 ret = -EIO;
2212
2213 iwlagn_led_enable(priv);
2214
2215 priv->is_open = 1;
2216 IWL_DEBUG_MAC80211(priv, "leave\n");
2217 return 0;
2218 }
2219
2220 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2221 {
2222 struct iwl_priv *priv = hw->priv;
2223
2224 IWL_DEBUG_MAC80211(priv, "enter\n");
2225
2226 if (!priv->is_open)
2227 return;
2228
2229 priv->is_open = 0;
2230
2231 iwl_down(priv);
2232
2233 flush_workqueue(priv->workqueue);
2234
2235 /* User space software may expect getting rfkill changes
2236 * even if interface is down */
2237 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2238 iwl_enable_rfkill_int(priv);
2239
2240 IWL_DEBUG_MAC80211(priv, "leave\n");
2241 }
2242
2243 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2244 {
2245 struct iwl_priv *priv = hw->priv;
2246
2247 IWL_DEBUG_MACDUMP(priv, "enter\n");
2248
2249 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2250 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2251
2252 if (iwlagn_tx_skb(priv, skb))
2253 dev_kfree_skb_any(skb);
2254
2255 IWL_DEBUG_MACDUMP(priv, "leave\n");
2256 }
2257
2258 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2259 struct ieee80211_vif *vif,
2260 struct ieee80211_key_conf *keyconf,
2261 struct ieee80211_sta *sta,
2262 u32 iv32, u16 *phase1key)
2263 {
2264 struct iwl_priv *priv = hw->priv;
2265 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2266
2267 IWL_DEBUG_MAC80211(priv, "enter\n");
2268
2269 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
2270 iv32, phase1key);
2271
2272 IWL_DEBUG_MAC80211(priv, "leave\n");
2273 }
2274
2275 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2276 struct ieee80211_vif *vif,
2277 struct ieee80211_sta *sta,
2278 struct ieee80211_key_conf *key)
2279 {
2280 struct iwl_priv *priv = hw->priv;
2281 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2282 struct iwl_rxon_context *ctx = vif_priv->ctx;
2283 int ret;
2284 u8 sta_id;
2285 bool is_default_wep_key = false;
2286
2287 IWL_DEBUG_MAC80211(priv, "enter\n");
2288
2289 if (iwlagn_mod_params.sw_crypto) {
2290 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2291 return -EOPNOTSUPP;
2292 }
2293
2294 /*
2295 * To support IBSS RSN, don't program group keys in IBSS, the
2296 * hardware will then not attempt to decrypt the frames.
2297 */
2298 if (vif->type == NL80211_IFTYPE_ADHOC &&
2299 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2300 return -EOPNOTSUPP;
2301
2302 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
2303 if (sta_id == IWL_INVALID_STATION)
2304 return -EINVAL;
2305
2306 mutex_lock(&priv->mutex);
2307 iwl_scan_cancel_timeout(priv, 100);
2308
2309 /*
2310 * If we are getting WEP group key and we didn't receive any key mapping
2311 * so far, we are in legacy wep mode (group key only), otherwise we are
2312 * in 1X mode.
2313 * In legacy wep mode, we use another host command to the uCode.
2314 */
2315 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2316 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2317 !sta) {
2318 if (cmd == SET_KEY)
2319 is_default_wep_key = !ctx->key_mapping_keys;
2320 else
2321 is_default_wep_key =
2322 (key->hw_key_idx == HW_KEY_DEFAULT);
2323 }
2324
2325 switch (cmd) {
2326 case SET_KEY:
2327 if (is_default_wep_key)
2328 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2329 else
2330 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
2331 key, sta_id);
2332
2333 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2334 break;
2335 case DISABLE_KEY:
2336 if (is_default_wep_key)
2337 ret = iwl_remove_default_wep_key(priv, ctx, key);
2338 else
2339 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
2340
2341 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2342 break;
2343 default:
2344 ret = -EINVAL;
2345 }
2346
2347 mutex_unlock(&priv->mutex);
2348 IWL_DEBUG_MAC80211(priv, "leave\n");
2349
2350 return ret;
2351 }
2352
2353 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2354 struct ieee80211_vif *vif,
2355 enum ieee80211_ampdu_mlme_action action,
2356 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2357 u8 buf_size)
2358 {
2359 struct iwl_priv *priv = hw->priv;
2360 int ret = -EINVAL;
2361 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2362
2363 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2364 sta->addr, tid);
2365
2366 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2367 return -EACCES;
2368
2369 mutex_lock(&priv->mutex);
2370
2371 switch (action) {
2372 case IEEE80211_AMPDU_RX_START:
2373 IWL_DEBUG_HT(priv, "start Rx\n");
2374 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2375 break;
2376 case IEEE80211_AMPDU_RX_STOP:
2377 IWL_DEBUG_HT(priv, "stop Rx\n");
2378 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2379 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2380 ret = 0;
2381 break;
2382 case IEEE80211_AMPDU_TX_START:
2383 IWL_DEBUG_HT(priv, "start Tx\n");
2384 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2385 if (ret == 0) {
2386 priv->_agn.agg_tids_count++;
2387 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2388 priv->_agn.agg_tids_count);
2389 }
2390 break;
2391 case IEEE80211_AMPDU_TX_STOP:
2392 IWL_DEBUG_HT(priv, "stop Tx\n");
2393 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2394 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2395 priv->_agn.agg_tids_count--;
2396 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2397 priv->_agn.agg_tids_count);
2398 }
2399 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2400 ret = 0;
2401 if (priv->cfg->ht_params &&
2402 priv->cfg->ht_params->use_rts_for_aggregation) {
2403 /*
2404 * switch off RTS/CTS if it was previously enabled
2405 */
2406 sta_priv->lq_sta.lq.general_params.flags &=
2407 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2408 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2409 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2410 }
2411 break;
2412 case IEEE80211_AMPDU_TX_OPERATIONAL:
2413 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2414
2415 trans_txq_agg_setup(&priv->trans, iwl_sta_id(sta), tid,
2416 buf_size);
2417
2418 /*
2419 * If the limit is 0, then it wasn't initialised yet,
2420 * use the default. We can do that since we take the
2421 * minimum below, and we don't want to go above our
2422 * default due to hardware restrictions.
2423 */
2424 if (sta_priv->max_agg_bufsize == 0)
2425 sta_priv->max_agg_bufsize =
2426 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2427
2428 /*
2429 * Even though in theory the peer could have different
2430 * aggregation reorder buffer sizes for different sessions,
2431 * our ucode doesn't allow for that and has a global limit
2432 * for each station. Therefore, use the minimum of all the
2433 * aggregation sessions and our default value.
2434 */
2435 sta_priv->max_agg_bufsize =
2436 min(sta_priv->max_agg_bufsize, buf_size);
2437
2438 if (priv->cfg->ht_params &&
2439 priv->cfg->ht_params->use_rts_for_aggregation) {
2440 /*
2441 * switch to RTS/CTS if it is the prefer protection
2442 * method for HT traffic
2443 */
2444
2445 sta_priv->lq_sta.lq.general_params.flags |=
2446 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2447 }
2448
2449 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2450 sta_priv->max_agg_bufsize;
2451
2452 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2453 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2454
2455 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2456 sta->addr, tid);
2457 ret = 0;
2458 break;
2459 }
2460 mutex_unlock(&priv->mutex);
2461
2462 return ret;
2463 }
2464
2465 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2466 struct ieee80211_vif *vif,
2467 struct ieee80211_sta *sta)
2468 {
2469 struct iwl_priv *priv = hw->priv;
2470 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2471 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2472 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2473 int ret;
2474 u8 sta_id;
2475
2476 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2477 sta->addr);
2478 mutex_lock(&priv->mutex);
2479 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2480 sta->addr);
2481 sta_priv->common.sta_id = IWL_INVALID_STATION;
2482
2483 atomic_set(&sta_priv->pending_frames, 0);
2484 if (vif->type == NL80211_IFTYPE_AP)
2485 sta_priv->client = true;
2486
2487 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2488 is_ap, sta, &sta_id);
2489 if (ret) {
2490 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2491 sta->addr, ret);
2492 /* Should we return success if return code is EEXIST ? */
2493 mutex_unlock(&priv->mutex);
2494 return ret;
2495 }
2496
2497 sta_priv->common.sta_id = sta_id;
2498
2499 /* Initialize rate scaling */
2500 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2501 sta->addr);
2502 iwl_rs_rate_init(priv, sta, sta_id);
2503 mutex_unlock(&priv->mutex);
2504
2505 return 0;
2506 }
2507
2508 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2509 struct ieee80211_channel_switch *ch_switch)
2510 {
2511 struct iwl_priv *priv = hw->priv;
2512 const struct iwl_channel_info *ch_info;
2513 struct ieee80211_conf *conf = &hw->conf;
2514 struct ieee80211_channel *channel = ch_switch->channel;
2515 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2516 /*
2517 * MULTI-FIXME
2518 * When we add support for multiple interfaces, we need to
2519 * revisit this. The channel switch command in the device
2520 * only affects the BSS context, but what does that really
2521 * mean? And what if we get a CSA on the second interface?
2522 * This needs a lot of work.
2523 */
2524 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2525 u16 ch;
2526
2527 IWL_DEBUG_MAC80211(priv, "enter\n");
2528
2529 mutex_lock(&priv->mutex);
2530
2531 if (iwl_is_rfkill(priv))
2532 goto out;
2533
2534 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2535 test_bit(STATUS_SCANNING, &priv->status) ||
2536 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
2537 goto out;
2538
2539 if (!iwl_is_associated_ctx(ctx))
2540 goto out;
2541
2542 if (!priv->cfg->lib->set_channel_switch)
2543 goto out;
2544
2545 ch = channel->hw_value;
2546 if (le16_to_cpu(ctx->active.channel) == ch)
2547 goto out;
2548
2549 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2550 if (!is_channel_valid(ch_info)) {
2551 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2552 goto out;
2553 }
2554
2555 spin_lock_irq(&priv->lock);
2556
2557 priv->current_ht_config.smps = conf->smps_mode;
2558
2559 /* Configure HT40 channels */
2560 ctx->ht.enabled = conf_is_ht(conf);
2561 if (ctx->ht.enabled) {
2562 if (conf_is_ht40_minus(conf)) {
2563 ctx->ht.extension_chan_offset =
2564 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2565 ctx->ht.is_40mhz = true;
2566 } else if (conf_is_ht40_plus(conf)) {
2567 ctx->ht.extension_chan_offset =
2568 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2569 ctx->ht.is_40mhz = true;
2570 } else {
2571 ctx->ht.extension_chan_offset =
2572 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2573 ctx->ht.is_40mhz = false;
2574 }
2575 } else
2576 ctx->ht.is_40mhz = false;
2577
2578 if ((le16_to_cpu(ctx->staging.channel) != ch))
2579 ctx->staging.flags = 0;
2580
2581 iwl_set_rxon_channel(priv, channel, ctx);
2582 iwl_set_rxon_ht(priv, ht_conf);
2583 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2584
2585 spin_unlock_irq(&priv->lock);
2586
2587 iwl_set_rate(priv);
2588 /*
2589 * at this point, staging_rxon has the
2590 * configuration for channel switch
2591 */
2592 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2593 priv->switch_channel = cpu_to_le16(ch);
2594 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2595 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2596 priv->switch_channel = 0;
2597 ieee80211_chswitch_done(ctx->vif, false);
2598 }
2599
2600 out:
2601 mutex_unlock(&priv->mutex);
2602 IWL_DEBUG_MAC80211(priv, "leave\n");
2603 }
2604
2605 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2606 unsigned int changed_flags,
2607 unsigned int *total_flags,
2608 u64 multicast)
2609 {
2610 struct iwl_priv *priv = hw->priv;
2611 __le32 filter_or = 0, filter_nand = 0;
2612 struct iwl_rxon_context *ctx;
2613
2614 #define CHK(test, flag) do { \
2615 if (*total_flags & (test)) \
2616 filter_or |= (flag); \
2617 else \
2618 filter_nand |= (flag); \
2619 } while (0)
2620
2621 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2622 changed_flags, *total_flags);
2623
2624 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2625 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2626 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2627 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2628
2629 #undef CHK
2630
2631 mutex_lock(&priv->mutex);
2632
2633 for_each_context(priv, ctx) {
2634 ctx->staging.filter_flags &= ~filter_nand;
2635 ctx->staging.filter_flags |= filter_or;
2636
2637 /*
2638 * Not committing directly because hardware can perform a scan,
2639 * but we'll eventually commit the filter flags change anyway.
2640 */
2641 }
2642
2643 mutex_unlock(&priv->mutex);
2644
2645 /*
2646 * Receiving all multicast frames is always enabled by the
2647 * default flags setup in iwl_connection_init_rx_config()
2648 * since we currently do not support programming multicast
2649 * filters into the device.
2650 */
2651 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2652 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2653 }
2654
2655 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2656 {
2657 struct iwl_priv *priv = hw->priv;
2658
2659 mutex_lock(&priv->mutex);
2660 IWL_DEBUG_MAC80211(priv, "enter\n");
2661
2662 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2663 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2664 goto done;
2665 }
2666 if (iwl_is_rfkill(priv)) {
2667 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2668 goto done;
2669 }
2670
2671 /*
2672 * mac80211 will not push any more frames for transmit
2673 * until the flush is completed
2674 */
2675 if (drop) {
2676 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2677 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2678 IWL_ERR(priv, "flush request fail\n");
2679 goto done;
2680 }
2681 }
2682 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2683 iwlagn_wait_tx_queue_empty(priv);
2684 done:
2685 mutex_unlock(&priv->mutex);
2686 IWL_DEBUG_MAC80211(priv, "leave\n");
2687 }
2688
2689 static void iwlagn_disable_roc(struct iwl_priv *priv)
2690 {
2691 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2692 struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
2693
2694 lockdep_assert_held(&priv->mutex);
2695
2696 if (!ctx->is_active)
2697 return;
2698
2699 ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
2700 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2701 iwl_set_rxon_channel(priv, chan, ctx);
2702 iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
2703
2704 priv->_agn.hw_roc_channel = NULL;
2705
2706 iwlagn_commit_rxon(priv, ctx);
2707
2708 ctx->is_active = false;
2709 }
2710
2711 static void iwlagn_bg_roc_done(struct work_struct *work)
2712 {
2713 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2714 _agn.hw_roc_work.work);
2715
2716 mutex_lock(&priv->mutex);
2717 ieee80211_remain_on_channel_expired(priv->hw);
2718 iwlagn_disable_roc(priv);
2719 mutex_unlock(&priv->mutex);
2720 }
2721
2722 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2723 struct ieee80211_channel *channel,
2724 enum nl80211_channel_type channel_type,
2725 int duration)
2726 {
2727 struct iwl_priv *priv = hw->priv;
2728 int err = 0;
2729
2730 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2731 return -EOPNOTSUPP;
2732
2733 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2734 BIT(NL80211_IFTYPE_P2P_CLIENT)))
2735 return -EOPNOTSUPP;
2736
2737 mutex_lock(&priv->mutex);
2738
2739 if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
2740 test_bit(STATUS_SCAN_HW, &priv->status)) {
2741 err = -EBUSY;
2742 goto out;
2743 }
2744
2745 priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
2746 priv->_agn.hw_roc_channel = channel;
2747 priv->_agn.hw_roc_chantype = channel_type;
2748 priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
2749 iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
2750 queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work,
2751 msecs_to_jiffies(duration + 20));
2752
2753 msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
2754 ieee80211_ready_on_channel(priv->hw);
2755
2756 out:
2757 mutex_unlock(&priv->mutex);
2758
2759 return err;
2760 }
2761
2762 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2763 {
2764 struct iwl_priv *priv = hw->priv;
2765
2766 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2767 return -EOPNOTSUPP;
2768
2769 cancel_delayed_work_sync(&priv->_agn.hw_roc_work);
2770
2771 mutex_lock(&priv->mutex);
2772 iwlagn_disable_roc(priv);
2773 mutex_unlock(&priv->mutex);
2774
2775 return 0;
2776 }
2777
2778 /*****************************************************************************
2779 *
2780 * driver setup and teardown
2781 *
2782 *****************************************************************************/
2783
2784 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2785 {
2786 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2787
2788 init_waitqueue_head(&priv->wait_command_queue);
2789
2790 INIT_WORK(&priv->restart, iwl_bg_restart);
2791 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2792 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2793 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2794 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2795 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2796 INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done);
2797
2798 iwl_setup_scan_deferred_work(priv);
2799
2800 if (priv->cfg->lib->bt_setup_deferred_work)
2801 priv->cfg->lib->bt_setup_deferred_work(priv);
2802
2803 init_timer(&priv->statistics_periodic);
2804 priv->statistics_periodic.data = (unsigned long)priv;
2805 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2806
2807 init_timer(&priv->ucode_trace);
2808 priv->ucode_trace.data = (unsigned long)priv;
2809 priv->ucode_trace.function = iwl_bg_ucode_trace;
2810
2811 init_timer(&priv->watchdog);
2812 priv->watchdog.data = (unsigned long)priv;
2813 priv->watchdog.function = iwl_bg_watchdog;
2814 }
2815
2816 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2817 {
2818 if (priv->cfg->lib->cancel_deferred_work)
2819 priv->cfg->lib->cancel_deferred_work(priv);
2820
2821 cancel_work_sync(&priv->run_time_calib_work);
2822 cancel_work_sync(&priv->beacon_update);
2823
2824 iwl_cancel_scan_deferred_work(priv);
2825
2826 cancel_work_sync(&priv->bt_full_concurrency);
2827 cancel_work_sync(&priv->bt_runtime_config);
2828
2829 del_timer_sync(&priv->statistics_periodic);
2830 del_timer_sync(&priv->ucode_trace);
2831 }
2832
2833 static void iwl_init_hw_rates(struct iwl_priv *priv,
2834 struct ieee80211_rate *rates)
2835 {
2836 int i;
2837
2838 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2839 rates[i].bitrate = iwl_rates[i].ieee * 5;
2840 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2841 rates[i].hw_value_short = i;
2842 rates[i].flags = 0;
2843 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2844 /*
2845 * If CCK != 1M then set short preamble rate flag.
2846 */
2847 rates[i].flags |=
2848 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2849 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2850 }
2851 }
2852 }
2853
2854 static int iwl_init_drv(struct iwl_priv *priv)
2855 {
2856 int ret;
2857
2858 spin_lock_init(&priv->sta_lock);
2859 spin_lock_init(&priv->hcmd_lock);
2860
2861 mutex_init(&priv->mutex);
2862
2863 priv->ieee_channels = NULL;
2864 priv->ieee_rates = NULL;
2865 priv->band = IEEE80211_BAND_2GHZ;
2866
2867 priv->iw_mode = NL80211_IFTYPE_STATION;
2868 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
2869 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
2870 priv->_agn.agg_tids_count = 0;
2871
2872 /* initialize force reset */
2873 priv->force_reset[IWL_RF_RESET].reset_duration =
2874 IWL_DELAY_NEXT_FORCE_RF_RESET;
2875 priv->force_reset[IWL_FW_RESET].reset_duration =
2876 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
2877
2878 priv->rx_statistics_jiffies = jiffies;
2879
2880 /* Choose which receivers/antennas to use */
2881 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
2882
2883 iwl_init_scan_params(priv);
2884
2885 /* init bt coex */
2886 if (priv->cfg->bt_params &&
2887 priv->cfg->bt_params->advanced_bt_coexist) {
2888 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2889 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2890 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2891 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
2892 priv->bt_duration = BT_DURATION_LIMIT_DEF;
2893 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
2894 }
2895
2896 ret = iwl_init_channel_map(priv);
2897 if (ret) {
2898 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
2899 goto err;
2900 }
2901
2902 ret = iwlcore_init_geos(priv);
2903 if (ret) {
2904 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
2905 goto err_free_channel_map;
2906 }
2907 iwl_init_hw_rates(priv, priv->ieee_rates);
2908
2909 return 0;
2910
2911 err_free_channel_map:
2912 iwl_free_channel_map(priv);
2913 err:
2914 return ret;
2915 }
2916
2917 static void iwl_uninit_drv(struct iwl_priv *priv)
2918 {
2919 iwl_calib_free_results(priv);
2920 iwlcore_free_geos(priv);
2921 iwl_free_channel_map(priv);
2922 kfree(priv->scan_cmd);
2923 kfree(priv->beacon_cmd);
2924 }
2925
2926 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
2927 enum ieee80211_rssi_event rssi_event)
2928 {
2929 struct iwl_priv *priv = hw->priv;
2930
2931 mutex_lock(&priv->mutex);
2932
2933 if (priv->cfg->bt_params &&
2934 priv->cfg->bt_params->advanced_bt_coexist) {
2935 if (rssi_event == RSSI_EVENT_LOW)
2936 priv->bt_enable_pspoll = true;
2937 else if (rssi_event == RSSI_EVENT_HIGH)
2938 priv->bt_enable_pspoll = false;
2939
2940 iwlagn_send_advance_bt_config(priv);
2941 } else {
2942 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
2943 "ignoring RSSI callback\n");
2944 }
2945
2946 mutex_unlock(&priv->mutex);
2947 }
2948
2949 struct ieee80211_ops iwlagn_hw_ops = {
2950 .tx = iwlagn_mac_tx,
2951 .start = iwlagn_mac_start,
2952 .stop = iwlagn_mac_stop,
2953 .add_interface = iwl_mac_add_interface,
2954 .remove_interface = iwl_mac_remove_interface,
2955 .change_interface = iwl_mac_change_interface,
2956 .config = iwlagn_mac_config,
2957 .configure_filter = iwlagn_configure_filter,
2958 .set_key = iwlagn_mac_set_key,
2959 .update_tkip_key = iwlagn_mac_update_tkip_key,
2960 .conf_tx = iwl_mac_conf_tx,
2961 .bss_info_changed = iwlagn_bss_info_changed,
2962 .ampdu_action = iwlagn_mac_ampdu_action,
2963 .hw_scan = iwl_mac_hw_scan,
2964 .sta_notify = iwlagn_mac_sta_notify,
2965 .sta_add = iwlagn_mac_sta_add,
2966 .sta_remove = iwl_mac_sta_remove,
2967 .channel_switch = iwlagn_mac_channel_switch,
2968 .flush = iwlagn_mac_flush,
2969 .tx_last_beacon = iwl_mac_tx_last_beacon,
2970 .remain_on_channel = iwl_mac_remain_on_channel,
2971 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
2972 .offchannel_tx = iwl_mac_offchannel_tx,
2973 .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
2974 .rssi_callback = iwl_mac_rssi_callback,
2975 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
2976 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
2977 };
2978
2979 static u32 iwl_hw_detect(struct iwl_priv *priv)
2980 {
2981 return iwl_read32(priv, CSR_HW_REV);
2982 }
2983
2984 static int iwl_set_hw_params(struct iwl_priv *priv)
2985 {
2986 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2987 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2988 if (iwlagn_mod_params.amsdu_size_8K)
2989 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
2990 else
2991 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
2992
2993 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
2994
2995 if (iwlagn_mod_params.disable_11n)
2996 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
2997
2998 /* Device-specific setup */
2999 return priv->cfg->lib->set_hw_params(priv);
3000 }
3001
3002 static const u8 iwlagn_bss_ac_to_fifo[] = {
3003 IWL_TX_FIFO_VO,
3004 IWL_TX_FIFO_VI,
3005 IWL_TX_FIFO_BE,
3006 IWL_TX_FIFO_BK,
3007 };
3008
3009 static const u8 iwlagn_bss_ac_to_queue[] = {
3010 0, 1, 2, 3,
3011 };
3012
3013 static const u8 iwlagn_pan_ac_to_fifo[] = {
3014 IWL_TX_FIFO_VO_IPAN,
3015 IWL_TX_FIFO_VI_IPAN,
3016 IWL_TX_FIFO_BE_IPAN,
3017 IWL_TX_FIFO_BK_IPAN,
3018 };
3019
3020 static const u8 iwlagn_pan_ac_to_queue[] = {
3021 7, 6, 5, 4,
3022 };
3023
3024 /* This function both allocates and initializes hw and priv. */
3025 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3026 {
3027 struct iwl_priv *priv;
3028 /* mac80211 allocates memory for this device instance, including
3029 * space for this driver's private structure */
3030 struct ieee80211_hw *hw;
3031
3032 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3033 if (hw == NULL) {
3034 pr_err("%s: Can not allocate network device\n",
3035 cfg->name);
3036 goto out;
3037 }
3038
3039 priv = hw->priv;
3040 priv->hw = hw;
3041
3042 out:
3043 return hw;
3044 }
3045
3046 static void iwl_init_context(struct iwl_priv *priv)
3047 {
3048 int i;
3049
3050 /*
3051 * The default context is always valid,
3052 * more may be discovered when firmware
3053 * is loaded.
3054 */
3055 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3056
3057 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3058 priv->contexts[i].ctxid = i;
3059
3060 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3061 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3062 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3063 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3064 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3065 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3066 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3067 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3068 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3069 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3070 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3071 BIT(NL80211_IFTYPE_ADHOC);
3072 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3073 BIT(NL80211_IFTYPE_STATION);
3074 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3075 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3076 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3077 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3078
3079 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3080 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3081 REPLY_WIPAN_RXON_TIMING;
3082 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3083 REPLY_WIPAN_RXON_ASSOC;
3084 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3085 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3086 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3087 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3088 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3089 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3090 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3091 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3092 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3093 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3094 #ifdef CONFIG_IWL_P2P
3095 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3096 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3097 #endif
3098 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3099 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3100 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3101
3102 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3103 }
3104
3105 int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
3106 {
3107 int err = 0;
3108 struct iwl_priv *priv;
3109 struct ieee80211_hw *hw;
3110 u16 num_mac;
3111 u32 hw_rev;
3112
3113 /************************
3114 * 1. Allocating HW data
3115 ************************/
3116 hw = iwl_alloc_all(cfg);
3117 if (!hw) {
3118 err = -ENOMEM;
3119 goto out;
3120 }
3121
3122 priv = hw->priv;
3123 priv->bus = bus;
3124 bus_set_drv_data(priv->bus, priv);
3125
3126 /* At this point both hw and priv are allocated. */
3127
3128 SET_IEEE80211_DEV(hw, priv->bus->dev);
3129
3130 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3131 priv->cfg = cfg;
3132 priv->inta_mask = CSR_INI_SET_MASK;
3133
3134 err = iwl_trans_register(&priv->trans, priv);
3135 if (err)
3136 goto out_free_priv;
3137
3138 /* is antenna coupling more than 35dB ? */
3139 priv->bt_ant_couple_ok =
3140 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3141 true : false;
3142
3143 /* enable/disable bt channel inhibition */
3144 priv->bt_ch_announce = iwlagn_bt_ch_announce;
3145 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3146 (priv->bt_ch_announce) ? "On" : "Off");
3147
3148 if (iwl_alloc_traffic_mem(priv))
3149 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3150
3151 /* these spin locks will be used in apm_ops.init and EEPROM access
3152 * we should init now
3153 */
3154 spin_lock_init(&priv->reg_lock);
3155 spin_lock_init(&priv->lock);
3156
3157 /*
3158 * stop and reset the on-board processor just in case it is in a
3159 * strange state ... like being left stranded by a primary kernel
3160 * and this is now the kdump kernel trying to start up
3161 */
3162 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3163
3164 /***********************
3165 * 3. Read REV register
3166 ***********************/
3167 hw_rev = iwl_hw_detect(priv);
3168 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3169 priv->cfg->name, hw_rev);
3170
3171 if (trans_prepare_card_hw(&priv->trans)) {
3172 err = -EIO;
3173 IWL_WARN(priv, "Failed, HW not ready\n");
3174 goto out_free_traffic_mem;
3175 }
3176
3177 /*****************
3178 * 4. Read EEPROM
3179 *****************/
3180 /* Read the EEPROM */
3181 err = iwl_eeprom_init(priv, hw_rev);
3182 if (err) {
3183 IWL_ERR(priv, "Unable to init EEPROM\n");
3184 goto out_free_traffic_mem;
3185 }
3186 err = iwl_eeprom_check_version(priv);
3187 if (err)
3188 goto out_free_eeprom;
3189
3190 err = iwl_eeprom_check_sku(priv);
3191 if (err)
3192 goto out_free_eeprom;
3193
3194 /* extract MAC Address */
3195 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3196 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3197 priv->hw->wiphy->addresses = priv->addresses;
3198 priv->hw->wiphy->n_addresses = 1;
3199 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3200 if (num_mac > 1) {
3201 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3202 ETH_ALEN);
3203 priv->addresses[1].addr[5]++;
3204 priv->hw->wiphy->n_addresses++;
3205 }
3206
3207 /* initialize all valid contexts */
3208 iwl_init_context(priv);
3209
3210 /************************
3211 * 5. Setup HW constants
3212 ************************/
3213 if (iwl_set_hw_params(priv)) {
3214 err = -ENOENT;
3215 IWL_ERR(priv, "failed to set hw parameters\n");
3216 goto out_free_eeprom;
3217 }
3218
3219 /*******************
3220 * 6. Setup priv
3221 *******************/
3222
3223 err = iwl_init_drv(priv);
3224 if (err)
3225 goto out_free_eeprom;
3226 /* At this point both hw and priv are initialized. */
3227
3228 /********************
3229 * 7. Setup services
3230 ********************/
3231 iwl_setup_deferred_work(priv);
3232 iwl_setup_rx_handlers(priv);
3233 iwl_testmode_init(priv);
3234
3235 /*********************************************
3236 * 8. Enable interrupts
3237 *********************************************/
3238
3239 iwl_enable_rfkill_int(priv);
3240
3241 /* If platform's RF_KILL switch is NOT set to KILL */
3242 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3243 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3244 else
3245 set_bit(STATUS_RF_KILL_HW, &priv->status);
3246
3247 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3248 test_bit(STATUS_RF_KILL_HW, &priv->status));
3249
3250 iwl_power_initialize(priv);
3251 iwl_tt_initialize(priv);
3252
3253 init_completion(&priv->_agn.firmware_loading_complete);
3254
3255 err = iwl_request_firmware(priv, true);
3256 if (err)
3257 goto out_destroy_workqueue;
3258
3259 return 0;
3260
3261 out_destroy_workqueue:
3262 destroy_workqueue(priv->workqueue);
3263 priv->workqueue = NULL;
3264 iwl_uninit_drv(priv);
3265 out_free_eeprom:
3266 iwl_eeprom_free(priv);
3267 out_free_traffic_mem:
3268 iwl_free_traffic_mem(priv);
3269 trans_free(&priv->trans);
3270 out_free_priv:
3271 ieee80211_free_hw(priv->hw);
3272 out:
3273 return err;
3274 }
3275
3276 void __devexit iwl_remove(struct iwl_priv * priv)
3277 {
3278 unsigned long flags;
3279
3280 wait_for_completion(&priv->_agn.firmware_loading_complete);
3281
3282 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3283
3284 iwl_dbgfs_unregister(priv);
3285 sysfs_remove_group(&priv->bus->dev->kobj,
3286 &iwl_attribute_group);
3287
3288 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3289 * to be called and iwl_down since we are removing the device
3290 * we need to set STATUS_EXIT_PENDING bit.
3291 */
3292 set_bit(STATUS_EXIT_PENDING, &priv->status);
3293
3294 iwl_testmode_cleanup(priv);
3295 iwl_leds_exit(priv);
3296
3297 if (priv->mac80211_registered) {
3298 ieee80211_unregister_hw(priv->hw);
3299 priv->mac80211_registered = 0;
3300 }
3301
3302 /* Reset to low power before unloading driver. */
3303 iwl_apm_stop(priv);
3304
3305 iwl_tt_exit(priv);
3306
3307 /* make sure we flush any pending irq or
3308 * tasklet for the driver
3309 */
3310 spin_lock_irqsave(&priv->lock, flags);
3311 iwl_disable_interrupts(priv);
3312 spin_unlock_irqrestore(&priv->lock, flags);
3313
3314 trans_sync_irq(&priv->trans);
3315
3316 iwl_dealloc_ucode(priv);
3317
3318 trans_rx_free(&priv->trans);
3319 trans_tx_free(&priv->trans);
3320
3321 iwl_eeprom_free(priv);
3322
3323 /*netif_stop_queue(dev); */
3324 flush_workqueue(priv->workqueue);
3325
3326 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3327 * priv->workqueue... so we can't take down the workqueue
3328 * until now... */
3329 destroy_workqueue(priv->workqueue);
3330 priv->workqueue = NULL;
3331 iwl_free_traffic_mem(priv);
3332
3333 trans_free(&priv->trans);
3334
3335 bus_set_drv_data(priv->bus, NULL);
3336
3337 iwl_uninit_drv(priv);
3338
3339 dev_kfree_skb(priv->beacon_skb);
3340
3341 ieee80211_free_hw(priv->hw);
3342 }
3343
3344
3345 /*****************************************************************************
3346 *
3347 * driver and module entry point
3348 *
3349 *****************************************************************************/
3350 static int __init iwl_init(void)
3351 {
3352
3353 int ret;
3354 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3355 pr_info(DRV_COPYRIGHT "\n");
3356
3357 ret = iwlagn_rate_control_register();
3358 if (ret) {
3359 pr_err("Unable to register rate control algorithm: %d\n", ret);
3360 return ret;
3361 }
3362
3363 ret = iwl_pci_register_driver();
3364
3365 if (ret)
3366 goto error_register;
3367 return ret;
3368
3369 error_register:
3370 iwlagn_rate_control_unregister();
3371 return ret;
3372 }
3373
3374 static void __exit iwl_exit(void)
3375 {
3376 iwl_pci_unregister_driver();
3377 iwlagn_rate_control_unregister();
3378 }
3379
3380 module_exit(iwl_exit);
3381 module_init(iwl_init);
3382
3383 #ifdef CONFIG_IWLWIFI_DEBUG
3384 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3385 MODULE_PARM_DESC(debug, "debug output mask");
3386 #endif
3387
3388 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3389 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3390 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3391 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3392 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3393 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3394 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3395 int, S_IRUGO);
3396 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3397 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3398 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3399
3400 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3401 S_IRUGO);
3402 MODULE_PARM_DESC(ucode_alternative,
3403 "specify ucode alternative to use from ucode file");
3404
3405 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3406 MODULE_PARM_DESC(antenna_coupling,
3407 "specify antenna coupling in dB (defualt: 0 dB)");
3408
3409 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3410 MODULE_PARM_DESC(bt_ch_inhibition,
3411 "Disable BT channel inhibition (default: enable)");
3412
3413 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3414 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3415
3416 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3417 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3418
3419 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3420 MODULE_PARM_DESC(wd_disable,
3421 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3422
3423 /*
3424 * set bt_coex_active to true, uCode will do kill/defer
3425 * every time the priority line is asserted (BT is sending signals on the
3426 * priority line in the PCIx).
3427 * set bt_coex_active to false, uCode will ignore the BT activity and
3428 * perform the normal operation
3429 *
3430 * User might experience transmit issue on some platform due to WiFi/BT
3431 * co-exist problem. The possible behaviors are:
3432 * Able to scan and finding all the available AP
3433 * Not able to associate with any AP
3434 * On those platforms, WiFi communication can be restored by set
3435 * "bt_coex_active" module parameter to "false"
3436 *
3437 * default: bt_coex_active = true (BT_COEX_ENABLE)
3438 */
3439 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3440 bool, S_IRUGO);
3441 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3442
3443 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3444 MODULE_PARM_DESC(led_mode, "0=system default, "
3445 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3446
3447 module_param_named(power_save, iwlagn_mod_params.power_save,
3448 bool, S_IRUGO);
3449 MODULE_PARM_DESC(power_save,
3450 "enable WiFi power management (default: disable)");
3451
3452 module_param_named(power_level, iwlagn_mod_params.power_level,
3453 int, S_IRUGO);
3454 MODULE_PARM_DESC(power_level,
3455 "default power save level (range from 1 - 5, default: 1)");
3456
3457 /*
3458 * For now, keep using power level 1 instead of automatically
3459 * adjusting ...
3460 */
3461 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3462 bool, S_IRUGO);
3463 MODULE_PARM_DESC(no_sleep_autoadjust,
3464 "don't automatically adjust sleep level "
3465 "according to maximum network latency (default: true)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree