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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/firmware.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_arp.h>
40
41 #include <net/mac80211.h>
42
43 #include <asm/div64.h>
44
45 #include "iwl-eeprom.h"
46 #include "iwl-dev.h"
47 #include "iwl-core.h"
48 #include "iwl-io.h"
49 #include "iwl-agn-calib.h"
50 #include "iwl-agn.h"
51 #include "iwl-shared.h"
52 #include "iwl-bus.h"
53 #include "iwl-trans.h"
54
55 /******************************************************************************
56 *
57 * module boiler plate
58 *
59 ******************************************************************************/
60
61 /*
62 * module name, copyright, version, etc.
63 */
64 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
65
66 #ifdef CONFIG_IWLWIFI_DEBUG
67 #define VD "d"
68 #else
69 #define VD
70 #endif
71
72 #define DRV_VERSION IWLWIFI_VERSION VD
73
74
75 MODULE_DESCRIPTION(DRV_DESCRIPTION);
76 MODULE_VERSION(DRV_VERSION);
77 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
78 MODULE_LICENSE("GPL");
79 MODULE_ALIAS("iwlagn");
80
81 void iwl_update_chain_flags(struct iwl_priv *priv)
82 {
83 struct iwl_rxon_context *ctx;
84
85 for_each_context(priv, ctx) {
86 iwlagn_set_rxon_chain(priv, ctx);
87 if (ctx->active.rx_chain != ctx->staging.rx_chain)
88 iwlagn_commit_rxon(priv, ctx);
89 }
90 }
91
92 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
93 static void iwl_set_beacon_tim(struct iwl_priv *priv,
94 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
95 u8 *beacon, u32 frame_size)
96 {
97 u16 tim_idx;
98 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
99
100 /*
101 * The index is relative to frame start but we start looking at the
102 * variable-length part of the beacon.
103 */
104 tim_idx = mgmt->u.beacon.variable - beacon;
105
106 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
107 while ((tim_idx < (frame_size - 2)) &&
108 (beacon[tim_idx] != WLAN_EID_TIM))
109 tim_idx += beacon[tim_idx+1] + 2;
110
111 /* If TIM field was found, set variables */
112 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
113 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
114 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
115 } else
116 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
117 }
118
119 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
120 {
121 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
122 struct iwl_host_cmd cmd = {
123 .id = REPLY_TX_BEACON,
124 .flags = CMD_SYNC,
125 };
126 struct ieee80211_tx_info *info;
127 u32 frame_size;
128 u32 rate_flags;
129 u32 rate;
130
131 /*
132 * We have to set up the TX command, the TX Beacon command, and the
133 * beacon contents.
134 */
135
136 lockdep_assert_held(&priv->shrd->mutex);
137
138 if (!priv->beacon_ctx) {
139 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
140 return 0;
141 }
142
143 if (WARN_ON(!priv->beacon_skb))
144 return -EINVAL;
145
146 /* Allocate beacon command */
147 if (!priv->beacon_cmd)
148 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
149 tx_beacon_cmd = priv->beacon_cmd;
150 if (!tx_beacon_cmd)
151 return -ENOMEM;
152
153 frame_size = priv->beacon_skb->len;
154
155 /* Set up TX command fields */
156 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
157 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
158 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
159 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
160 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
161
162 /* Set up TX beacon command fields */
163 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
164 frame_size);
165
166 /* Set up packet rate and flags */
167 info = IEEE80211_SKB_CB(priv->beacon_skb);
168
169 /*
170 * Let's set up the rate at least somewhat correctly;
171 * it will currently not actually be used by the uCode,
172 * it uses the broadcast station's rate instead.
173 */
174 if (info->control.rates[0].idx < 0 ||
175 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
176 rate = 0;
177 else
178 rate = info->control.rates[0].idx;
179
180 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
181 hw_params(priv).valid_tx_ant);
182 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
183
184 /* In mac80211, rates for 5 GHz start at 0 */
185 if (info->band == IEEE80211_BAND_5GHZ)
186 rate += IWL_FIRST_OFDM_RATE;
187 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
188 rate_flags |= RATE_MCS_CCK_MSK;
189
190 tx_beacon_cmd->tx.rate_n_flags =
191 iwl_hw_set_rate_n_flags(rate, rate_flags);
192
193 /* Submit command */
194 cmd.len[0] = sizeof(*tx_beacon_cmd);
195 cmd.data[0] = tx_beacon_cmd;
196 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
197 cmd.len[1] = frame_size;
198 cmd.data[1] = priv->beacon_skb->data;
199 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
200
201 return iwl_trans_send_cmd(trans(priv), &cmd);
202 }
203
204 static void iwl_bg_beacon_update(struct work_struct *work)
205 {
206 struct iwl_priv *priv =
207 container_of(work, struct iwl_priv, beacon_update);
208 struct sk_buff *beacon;
209
210 mutex_lock(&priv->shrd->mutex);
211 if (!priv->beacon_ctx) {
212 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
213 goto out;
214 }
215
216 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
217 /*
218 * The ucode will send beacon notifications even in
219 * IBSS mode, but we don't want to process them. But
220 * we need to defer the type check to here due to
221 * requiring locking around the beacon_ctx access.
222 */
223 goto out;
224 }
225
226 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
227 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
228 if (!beacon) {
229 IWL_ERR(priv, "update beacon failed -- keeping old\n");
230 goto out;
231 }
232
233 /* new beacon skb is allocated every time; dispose previous.*/
234 dev_kfree_skb(priv->beacon_skb);
235
236 priv->beacon_skb = beacon;
237
238 iwlagn_send_beacon_cmd(priv);
239 out:
240 mutex_unlock(&priv->shrd->mutex);
241 }
242
243 static void iwl_bg_bt_runtime_config(struct work_struct *work)
244 {
245 struct iwl_priv *priv =
246 container_of(work, struct iwl_priv, bt_runtime_config);
247
248 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
249 return;
250
251 /* dont send host command if rf-kill is on */
252 if (!iwl_is_ready_rf(priv->shrd))
253 return;
254 iwlagn_send_advance_bt_config(priv);
255 }
256
257 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
258 {
259 struct iwl_priv *priv =
260 container_of(work, struct iwl_priv, bt_full_concurrency);
261 struct iwl_rxon_context *ctx;
262
263 mutex_lock(&priv->shrd->mutex);
264
265 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
266 goto out;
267
268 /* dont send host command if rf-kill is on */
269 if (!iwl_is_ready_rf(priv->shrd))
270 goto out;
271
272 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
273 priv->bt_full_concurrent ?
274 "full concurrency" : "3-wire");
275
276 /*
277 * LQ & RXON updated cmds must be sent before BT Config cmd
278 * to avoid 3-wire collisions
279 */
280 for_each_context(priv, ctx) {
281 iwlagn_set_rxon_chain(priv, ctx);
282 iwlagn_commit_rxon(priv, ctx);
283 }
284
285 iwlagn_send_advance_bt_config(priv);
286 out:
287 mutex_unlock(&priv->shrd->mutex);
288 }
289
290 /**
291 * iwl_bg_statistics_periodic - Timer callback to queue statistics
292 *
293 * This callback is provided in order to send a statistics request.
294 *
295 * This timer function is continually reset to execute within
296 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
297 * was received. We need to ensure we receive the statistics in order
298 * to update the temperature used for calibrating the TXPOWER.
299 */
300 static void iwl_bg_statistics_periodic(unsigned long data)
301 {
302 struct iwl_priv *priv = (struct iwl_priv *)data;
303
304 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
305 return;
306
307 /* dont send host command if rf-kill is on */
308 if (!iwl_is_ready_rf(priv->shrd))
309 return;
310
311 iwl_send_statistics_request(priv, CMD_ASYNC, false);
312 }
313
314
315 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
316 u32 start_idx, u32 num_events,
317 u32 mode)
318 {
319 u32 i;
320 u32 ptr; /* SRAM byte address of log data */
321 u32 ev, time, data; /* event log data */
322 unsigned long reg_flags;
323
324 if (mode == 0)
325 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
326 else
327 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
328
329 /* Make sure device is powered up for SRAM reads */
330 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
331 if (iwl_grab_nic_access(bus(priv))) {
332 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
333 return;
334 }
335
336 /* Set starting address; reads will auto-increment */
337 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
338 rmb();
339
340 /*
341 * "time" is actually "data" for mode 0 (no timestamp).
342 * place event id # at far right for easier visual parsing.
343 */
344 for (i = 0; i < num_events; i++) {
345 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
346 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
347 if (mode == 0) {
348 trace_iwlwifi_dev_ucode_cont_event(priv,
349 0, time, ev);
350 } else {
351 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
352 trace_iwlwifi_dev_ucode_cont_event(priv,
353 time, data, ev);
354 }
355 }
356 /* Allow device to power down */
357 iwl_release_nic_access(bus(priv));
358 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
359 }
360
361 static void iwl_continuous_event_trace(struct iwl_priv *priv)
362 {
363 u32 capacity; /* event log capacity in # entries */
364 u32 base; /* SRAM byte address of event log header */
365 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
366 u32 num_wraps; /* # times uCode wrapped to top of log */
367 u32 next_entry; /* index of next entry to be written by uCode */
368
369 base = priv->device_pointers.error_event_table;
370 if (iwlagn_hw_valid_rtc_data_addr(base)) {
371 capacity = iwl_read_targ_mem(bus(priv), base);
372 num_wraps = iwl_read_targ_mem(bus(priv),
373 base + (2 * sizeof(u32)));
374 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
375 next_entry = iwl_read_targ_mem(bus(priv),
376 base + (3 * sizeof(u32)));
377 } else
378 return;
379
380 if (num_wraps == priv->event_log.num_wraps) {
381 iwl_print_cont_event_trace(priv,
382 base, priv->event_log.next_entry,
383 next_entry - priv->event_log.next_entry,
384 mode);
385 priv->event_log.non_wraps_count++;
386 } else {
387 if ((num_wraps - priv->event_log.num_wraps) > 1)
388 priv->event_log.wraps_more_count++;
389 else
390 priv->event_log.wraps_once_count++;
391 trace_iwlwifi_dev_ucode_wrap_event(priv,
392 num_wraps - priv->event_log.num_wraps,
393 next_entry, priv->event_log.next_entry);
394 if (next_entry < priv->event_log.next_entry) {
395 iwl_print_cont_event_trace(priv, base,
396 priv->event_log.next_entry,
397 capacity - priv->event_log.next_entry,
398 mode);
399
400 iwl_print_cont_event_trace(priv, base, 0,
401 next_entry, mode);
402 } else {
403 iwl_print_cont_event_trace(priv, base,
404 next_entry, capacity - next_entry,
405 mode);
406
407 iwl_print_cont_event_trace(priv, base, 0,
408 next_entry, mode);
409 }
410 }
411 priv->event_log.num_wraps = num_wraps;
412 priv->event_log.next_entry = next_entry;
413 }
414
415 /**
416 * iwl_bg_ucode_trace - Timer callback to log ucode event
417 *
418 * The timer is continually set to execute every
419 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
420 * this function is to perform continuous uCode event logging operation
421 * if enabled
422 */
423 static void iwl_bg_ucode_trace(unsigned long data)
424 {
425 struct iwl_priv *priv = (struct iwl_priv *)data;
426
427 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
428 return;
429
430 if (priv->event_log.ucode_trace) {
431 iwl_continuous_event_trace(priv);
432 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
433 mod_timer(&priv->ucode_trace,
434 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
435 }
436 }
437
438 static void iwl_bg_tx_flush(struct work_struct *work)
439 {
440 struct iwl_priv *priv =
441 container_of(work, struct iwl_priv, tx_flush);
442
443 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
444 return;
445
446 /* do nothing if rf-kill is on */
447 if (!iwl_is_ready_rf(priv->shrd))
448 return;
449
450 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
451 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
452 }
453
454 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
455 {
456 int i;
457
458 /*
459 * The default context is always valid,
460 * the PAN context depends on uCode.
461 */
462 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
463 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
464 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
465
466 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
467 priv->contexts[i].ctxid = i;
468
469 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
470 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
471 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
472 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
473 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
474 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
475 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
476 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
477 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
478 BIT(NL80211_IFTYPE_ADHOC);
479 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
480 BIT(NL80211_IFTYPE_STATION);
481 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
482 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
483 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
484 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
485
486 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
487 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
488 REPLY_WIPAN_RXON_TIMING;
489 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
490 REPLY_WIPAN_RXON_ASSOC;
491 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
492 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
493 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
494 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
495 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
496 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
497 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
498
499 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
500 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
501 BIT(NL80211_IFTYPE_P2P_CLIENT) |
502 BIT(NL80211_IFTYPE_P2P_GO);
503
504 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
505 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
506 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
507
508 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
509 }
510
511 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
512
513 #define UCODE_EXPERIMENTAL_INDEX 100
514 #define UCODE_EXPERIMENTAL_TAG "exp"
515
516 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
517 {
518 const char *name_pre = priv->cfg->fw_name_pre;
519 char tag[8];
520
521 if (first) {
522 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
523 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
524 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
525 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
526 #endif
527 priv->fw_index = priv->cfg->ucode_api_max;
528 sprintf(tag, "%d", priv->fw_index);
529 } else {
530 priv->fw_index--;
531 sprintf(tag, "%d", priv->fw_index);
532 }
533
534 if (priv->fw_index < priv->cfg->ucode_api_min) {
535 IWL_ERR(priv, "no suitable firmware found!\n");
536 return -ENOENT;
537 }
538
539 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
540
541 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
542 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
543 ? "EXPERIMENTAL " : "",
544 priv->firmware_name);
545
546 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
547 bus(priv)->dev,
548 GFP_KERNEL, priv, iwl_ucode_callback);
549 }
550
551 struct iwlagn_firmware_pieces {
552 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
553 size_t inst_size, data_size, init_size, init_data_size,
554 wowlan_inst_size, wowlan_data_size;
555
556 u32 build;
557
558 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
559 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
560 };
561
562 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
563 const struct firmware *ucode_raw,
564 struct iwlagn_firmware_pieces *pieces)
565 {
566 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
567 u32 api_ver, hdr_size;
568 const u8 *src;
569
570 priv->ucode_ver = le32_to_cpu(ucode->ver);
571 api_ver = IWL_UCODE_API(priv->ucode_ver);
572
573 switch (api_ver) {
574 default:
575 hdr_size = 28;
576 if (ucode_raw->size < hdr_size) {
577 IWL_ERR(priv, "File size too small!\n");
578 return -EINVAL;
579 }
580 pieces->build = le32_to_cpu(ucode->u.v2.build);
581 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
582 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
583 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
584 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
585 src = ucode->u.v2.data;
586 break;
587 case 0:
588 case 1:
589 case 2:
590 hdr_size = 24;
591 if (ucode_raw->size < hdr_size) {
592 IWL_ERR(priv, "File size too small!\n");
593 return -EINVAL;
594 }
595 pieces->build = 0;
596 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
597 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
598 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
599 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
600 src = ucode->u.v1.data;
601 break;
602 }
603
604 /* Verify size of file vs. image size info in file's header */
605 if (ucode_raw->size != hdr_size + pieces->inst_size +
606 pieces->data_size + pieces->init_size +
607 pieces->init_data_size) {
608
609 IWL_ERR(priv,
610 "uCode file size %d does not match expected size\n",
611 (int)ucode_raw->size);
612 return -EINVAL;
613 }
614
615 pieces->inst = src;
616 src += pieces->inst_size;
617 pieces->data = src;
618 src += pieces->data_size;
619 pieces->init = src;
620 src += pieces->init_size;
621 pieces->init_data = src;
622 src += pieces->init_data_size;
623
624 return 0;
625 }
626
627 static int iwlagn_load_firmware(struct iwl_priv *priv,
628 const struct firmware *ucode_raw,
629 struct iwlagn_firmware_pieces *pieces,
630 struct iwlagn_ucode_capabilities *capa)
631 {
632 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
633 struct iwl_ucode_tlv *tlv;
634 size_t len = ucode_raw->size;
635 const u8 *data;
636 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
637 int tmp;
638 u64 alternatives;
639 u32 tlv_len;
640 enum iwl_ucode_tlv_type tlv_type;
641 const u8 *tlv_data;
642
643 if (len < sizeof(*ucode)) {
644 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
645 return -EINVAL;
646 }
647
648 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
649 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
650 le32_to_cpu(ucode->magic));
651 return -EINVAL;
652 }
653
654 /*
655 * Check which alternatives are present, and "downgrade"
656 * when the chosen alternative is not present, warning
657 * the user when that happens. Some files may not have
658 * any alternatives, so don't warn in that case.
659 */
660 alternatives = le64_to_cpu(ucode->alternatives);
661 tmp = wanted_alternative;
662 if (wanted_alternative > 63)
663 wanted_alternative = 63;
664 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
665 wanted_alternative--;
666 if (wanted_alternative && wanted_alternative != tmp)
667 IWL_WARN(priv,
668 "uCode alternative %d not available, choosing %d\n",
669 tmp, wanted_alternative);
670
671 priv->ucode_ver = le32_to_cpu(ucode->ver);
672 pieces->build = le32_to_cpu(ucode->build);
673 data = ucode->data;
674
675 len -= sizeof(*ucode);
676
677 while (len >= sizeof(*tlv)) {
678 u16 tlv_alt;
679
680 len -= sizeof(*tlv);
681 tlv = (void *)data;
682
683 tlv_len = le32_to_cpu(tlv->length);
684 tlv_type = le16_to_cpu(tlv->type);
685 tlv_alt = le16_to_cpu(tlv->alternative);
686 tlv_data = tlv->data;
687
688 if (len < tlv_len) {
689 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
690 len, tlv_len);
691 return -EINVAL;
692 }
693 len -= ALIGN(tlv_len, 4);
694 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
695
696 /*
697 * Alternative 0 is always valid.
698 *
699 * Skip alternative TLVs that are not selected.
700 */
701 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
702 continue;
703
704 switch (tlv_type) {
705 case IWL_UCODE_TLV_INST:
706 pieces->inst = tlv_data;
707 pieces->inst_size = tlv_len;
708 break;
709 case IWL_UCODE_TLV_DATA:
710 pieces->data = tlv_data;
711 pieces->data_size = tlv_len;
712 break;
713 case IWL_UCODE_TLV_INIT:
714 pieces->init = tlv_data;
715 pieces->init_size = tlv_len;
716 break;
717 case IWL_UCODE_TLV_INIT_DATA:
718 pieces->init_data = tlv_data;
719 pieces->init_data_size = tlv_len;
720 break;
721 case IWL_UCODE_TLV_BOOT:
722 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
723 break;
724 case IWL_UCODE_TLV_PROBE_MAX_LEN:
725 if (tlv_len != sizeof(u32))
726 goto invalid_tlv_len;
727 capa->max_probe_length =
728 le32_to_cpup((__le32 *)tlv_data);
729 break;
730 case IWL_UCODE_TLV_PAN:
731 if (tlv_len)
732 goto invalid_tlv_len;
733 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
734 break;
735 case IWL_UCODE_TLV_FLAGS:
736 /* must be at least one u32 */
737 if (tlv_len < sizeof(u32))
738 goto invalid_tlv_len;
739 /* and a proper number of u32s */
740 if (tlv_len % sizeof(u32))
741 goto invalid_tlv_len;
742 /*
743 * This driver only reads the first u32 as
744 * right now no more features are defined,
745 * if that changes then either the driver
746 * will not work with the new firmware, or
747 * it'll not take advantage of new features.
748 */
749 capa->flags = le32_to_cpup((__le32 *)tlv_data);
750 break;
751 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
752 if (tlv_len != sizeof(u32))
753 goto invalid_tlv_len;
754 pieces->init_evtlog_ptr =
755 le32_to_cpup((__le32 *)tlv_data);
756 break;
757 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
758 if (tlv_len != sizeof(u32))
759 goto invalid_tlv_len;
760 pieces->init_evtlog_size =
761 le32_to_cpup((__le32 *)tlv_data);
762 break;
763 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
764 if (tlv_len != sizeof(u32))
765 goto invalid_tlv_len;
766 pieces->init_errlog_ptr =
767 le32_to_cpup((__le32 *)tlv_data);
768 break;
769 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
770 if (tlv_len != sizeof(u32))
771 goto invalid_tlv_len;
772 pieces->inst_evtlog_ptr =
773 le32_to_cpup((__le32 *)tlv_data);
774 break;
775 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
776 if (tlv_len != sizeof(u32))
777 goto invalid_tlv_len;
778 pieces->inst_evtlog_size =
779 le32_to_cpup((__le32 *)tlv_data);
780 break;
781 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
782 if (tlv_len != sizeof(u32))
783 goto invalid_tlv_len;
784 pieces->inst_errlog_ptr =
785 le32_to_cpup((__le32 *)tlv_data);
786 break;
787 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
788 if (tlv_len)
789 goto invalid_tlv_len;
790 priv->enhance_sensitivity_table = true;
791 break;
792 case IWL_UCODE_TLV_WOWLAN_INST:
793 pieces->wowlan_inst = tlv_data;
794 pieces->wowlan_inst_size = tlv_len;
795 break;
796 case IWL_UCODE_TLV_WOWLAN_DATA:
797 pieces->wowlan_data = tlv_data;
798 pieces->wowlan_data_size = tlv_len;
799 break;
800 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
801 if (tlv_len != sizeof(u32))
802 goto invalid_tlv_len;
803 capa->standard_phy_calibration_size =
804 le32_to_cpup((__le32 *)tlv_data);
805 break;
806 default:
807 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
808 break;
809 }
810 }
811
812 if (len) {
813 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
814 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
815 return -EINVAL;
816 }
817
818 return 0;
819
820 invalid_tlv_len:
821 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
822 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
823
824 return -EINVAL;
825 }
826
827 /**
828 * iwl_ucode_callback - callback when firmware was loaded
829 *
830 * If loaded successfully, copies the firmware into buffers
831 * for the card to fetch (via DMA).
832 */
833 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
834 {
835 struct iwl_priv *priv = context;
836 struct iwl_ucode_header *ucode;
837 int err;
838 struct iwlagn_firmware_pieces pieces;
839 const unsigned int api_max = priv->cfg->ucode_api_max;
840 unsigned int api_ok = priv->cfg->ucode_api_ok;
841 const unsigned int api_min = priv->cfg->ucode_api_min;
842 u32 api_ver;
843 char buildstr[25];
844 u32 build;
845 struct iwlagn_ucode_capabilities ucode_capa = {
846 .max_probe_length = 200,
847 .standard_phy_calibration_size =
848 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
849 };
850
851 if (!api_ok)
852 api_ok = api_max;
853
854 memset(&pieces, 0, sizeof(pieces));
855
856 if (!ucode_raw) {
857 if (priv->fw_index <= api_ok)
858 IWL_ERR(priv,
859 "request for firmware file '%s' failed.\n",
860 priv->firmware_name);
861 goto try_again;
862 }
863
864 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
865 priv->firmware_name, ucode_raw->size);
866
867 /* Make sure that we got at least the API version number */
868 if (ucode_raw->size < 4) {
869 IWL_ERR(priv, "File size way too small!\n");
870 goto try_again;
871 }
872
873 /* Data from ucode file: header followed by uCode images */
874 ucode = (struct iwl_ucode_header *)ucode_raw->data;
875
876 if (ucode->ver)
877 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
878 else
879 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
880 &ucode_capa);
881
882 if (err)
883 goto try_again;
884
885 api_ver = IWL_UCODE_API(priv->ucode_ver);
886 build = pieces.build;
887
888 /*
889 * api_ver should match the api version forming part of the
890 * firmware filename ... but we don't check for that and only rely
891 * on the API version read from firmware header from here on forward
892 */
893 /* no api version check required for experimental uCode */
894 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
895 if (api_ver < api_min || api_ver > api_max) {
896 IWL_ERR(priv,
897 "Driver unable to support your firmware API. "
898 "Driver supports v%u, firmware is v%u.\n",
899 api_max, api_ver);
900 goto try_again;
901 }
902
903 if (api_ver < api_ok) {
904 if (api_ok != api_max)
905 IWL_ERR(priv, "Firmware has old API version, "
906 "expected v%u through v%u, got v%u.\n",
907 api_ok, api_max, api_ver);
908 else
909 IWL_ERR(priv, "Firmware has old API version, "
910 "expected v%u, got v%u.\n",
911 api_max, api_ver);
912 IWL_ERR(priv, "New firmware can be obtained from "
913 "http://www.intellinuxwireless.org/.\n");
914 }
915 }
916
917 if (build)
918 sprintf(buildstr, " build %u%s", build,
919 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
920 ? " (EXP)" : "");
921 else
922 buildstr[0] = '\0';
923
924 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
925 IWL_UCODE_MAJOR(priv->ucode_ver),
926 IWL_UCODE_MINOR(priv->ucode_ver),
927 IWL_UCODE_API(priv->ucode_ver),
928 IWL_UCODE_SERIAL(priv->ucode_ver),
929 buildstr);
930
931 snprintf(priv->hw->wiphy->fw_version,
932 sizeof(priv->hw->wiphy->fw_version),
933 "%u.%u.%u.%u%s",
934 IWL_UCODE_MAJOR(priv->ucode_ver),
935 IWL_UCODE_MINOR(priv->ucode_ver),
936 IWL_UCODE_API(priv->ucode_ver),
937 IWL_UCODE_SERIAL(priv->ucode_ver),
938 buildstr);
939
940 /*
941 * For any of the failures below (before allocating pci memory)
942 * we will try to load a version with a smaller API -- maybe the
943 * user just got a corrupted version of the latest API.
944 */
945
946 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
947 priv->ucode_ver);
948 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
949 pieces.inst_size);
950 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
951 pieces.data_size);
952 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
953 pieces.init_size);
954 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
955 pieces.init_data_size);
956
957 /* Verify that uCode images will fit in card's SRAM */
958 if (pieces.inst_size > hw_params(priv).max_inst_size) {
959 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
960 pieces.inst_size);
961 goto try_again;
962 }
963
964 if (pieces.data_size > hw_params(priv).max_data_size) {
965 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
966 pieces.data_size);
967 goto try_again;
968 }
969
970 if (pieces.init_size > hw_params(priv).max_inst_size) {
971 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
972 pieces.init_size);
973 goto try_again;
974 }
975
976 if (pieces.init_data_size > hw_params(priv).max_data_size) {
977 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
978 pieces.init_data_size);
979 goto try_again;
980 }
981
982 /* Allocate ucode buffers for card's bus-master loading ... */
983
984 /* Runtime instructions and 2 copies of data:
985 * 1) unmodified from disk
986 * 2) backup cache for save/restore during power-downs */
987 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.code,
988 pieces.inst, pieces.inst_size))
989 goto err_pci_alloc;
990 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.data,
991 pieces.data, pieces.data_size))
992 goto err_pci_alloc;
993
994 /* Initialization instructions and data */
995 if (pieces.init_size && pieces.init_data_size) {
996 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.code,
997 pieces.init, pieces.init_size))
998 goto err_pci_alloc;
999 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.data,
1000 pieces.init_data, pieces.init_data_size))
1001 goto err_pci_alloc;
1002 }
1003
1004 /* WoWLAN instructions and data */
1005 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1006 if (iwl_alloc_fw_desc(bus(priv),
1007 &trans(priv)->ucode_wowlan.code,
1008 pieces.wowlan_inst,
1009 pieces.wowlan_inst_size))
1010 goto err_pci_alloc;
1011 if (iwl_alloc_fw_desc(bus(priv),
1012 &trans(priv)->ucode_wowlan.data,
1013 pieces.wowlan_data,
1014 pieces.wowlan_data_size))
1015 goto err_pci_alloc;
1016 }
1017
1018 /* Now that we can no longer fail, copy information */
1019
1020 /*
1021 * The (size - 16) / 12 formula is based on the information recorded
1022 * for each event, which is of mode 1 (including timestamp) for all
1023 * new microcodes that include this information.
1024 */
1025 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1026 if (pieces.init_evtlog_size)
1027 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1028 else
1029 priv->init_evtlog_size =
1030 priv->cfg->base_params->max_event_log_size;
1031 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1032 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1033 if (pieces.inst_evtlog_size)
1034 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1035 else
1036 priv->inst_evtlog_size =
1037 priv->cfg->base_params->max_event_log_size;
1038 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1039
1040 priv->new_scan_threshold_behaviour =
1041 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1042
1043 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1044 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1045
1046 /*
1047 * if not PAN, then don't support P2P -- might be a uCode
1048 * packaging bug or due to the eeprom check above
1049 */
1050 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1051 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1052
1053 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1054 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1055 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1056 } else {
1057 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1058 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1059 }
1060
1061 /*
1062 * figure out the offset of chain noise reset and gain commands
1063 * base on the size of standard phy calibration commands table size
1064 */
1065 if (ucode_capa.standard_phy_calibration_size >
1066 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1067 ucode_capa.standard_phy_calibration_size =
1068 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1069
1070 priv->phy_calib_chain_noise_reset_cmd =
1071 ucode_capa.standard_phy_calibration_size;
1072 priv->phy_calib_chain_noise_gain_cmd =
1073 ucode_capa.standard_phy_calibration_size + 1;
1074
1075 /* initialize all valid contexts */
1076 iwl_init_context(priv, ucode_capa.flags);
1077
1078 /**************************************************
1079 * This is still part of probe() in a sense...
1080 *
1081 * 9. Setup and register with mac80211 and debugfs
1082 **************************************************/
1083 err = iwlagn_mac_setup_register(priv, &ucode_capa);
1084 if (err)
1085 goto out_unbind;
1086
1087 err = iwl_dbgfs_register(priv, DRV_NAME);
1088 if (err)
1089 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1090
1091 /* We have our copies now, allow OS release its copies */
1092 release_firmware(ucode_raw);
1093 complete(&priv->firmware_loading_complete);
1094 return;
1095
1096 try_again:
1097 /* try next, if any */
1098 if (iwl_request_firmware(priv, false))
1099 goto out_unbind;
1100 release_firmware(ucode_raw);
1101 return;
1102
1103 err_pci_alloc:
1104 IWL_ERR(priv, "failed to allocate pci memory\n");
1105 iwl_dealloc_ucode(trans(priv));
1106 out_unbind:
1107 complete(&priv->firmware_loading_complete);
1108 device_release_driver(bus(priv)->dev);
1109 release_firmware(ucode_raw);
1110 }
1111
1112 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1113 {
1114 struct iwl_ct_kill_config cmd;
1115 struct iwl_ct_kill_throttling_config adv_cmd;
1116 unsigned long flags;
1117 int ret = 0;
1118
1119 spin_lock_irqsave(&priv->shrd->lock, flags);
1120 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1121 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1122 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1123 priv->thermal_throttle.ct_kill_toggle = false;
1124
1125 if (priv->cfg->base_params->support_ct_kill_exit) {
1126 adv_cmd.critical_temperature_enter =
1127 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1128 adv_cmd.critical_temperature_exit =
1129 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1130
1131 ret = iwl_trans_send_cmd_pdu(trans(priv),
1132 REPLY_CT_KILL_CONFIG_CMD,
1133 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1134 if (ret)
1135 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1136 else
1137 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1138 "succeeded, critical temperature enter is %d,"
1139 "exit is %d\n",
1140 hw_params(priv).ct_kill_threshold,
1141 hw_params(priv).ct_kill_exit_threshold);
1142 } else {
1143 cmd.critical_temperature_R =
1144 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1145
1146 ret = iwl_trans_send_cmd_pdu(trans(priv),
1147 REPLY_CT_KILL_CONFIG_CMD,
1148 CMD_SYNC, sizeof(cmd), &cmd);
1149 if (ret)
1150 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1151 else
1152 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1153 "succeeded, "
1154 "critical temperature is %d\n",
1155 hw_params(priv).ct_kill_threshold);
1156 }
1157 }
1158
1159 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1160 {
1161 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1162 struct iwl_host_cmd cmd = {
1163 .id = CALIBRATION_CFG_CMD,
1164 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1165 .data = { &calib_cfg_cmd, },
1166 };
1167
1168 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1169 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1170 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1171
1172 return iwl_trans_send_cmd(trans(priv), &cmd);
1173 }
1174
1175
1176 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1177 {
1178 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1179 .valid = cpu_to_le32(valid_tx_ant),
1180 };
1181
1182 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1183 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1184 return iwl_trans_send_cmd_pdu(trans(priv),
1185 TX_ANT_CONFIGURATION_CMD,
1186 CMD_SYNC,
1187 sizeof(struct iwl_tx_ant_config_cmd),
1188 &tx_ant_cmd);
1189 } else {
1190 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1191 return -EOPNOTSUPP;
1192 }
1193 }
1194
1195 /**
1196 * iwl_alive_start - called after REPLY_ALIVE notification received
1197 * from protocol/runtime uCode (initialization uCode's
1198 * Alive gets handled by iwl_init_alive_start()).
1199 */
1200 int iwl_alive_start(struct iwl_priv *priv)
1201 {
1202 int ret = 0;
1203 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1204
1205 /*TODO: this should go to the transport layer */
1206 iwl_reset_ict(trans(priv));
1207
1208 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1209
1210 /* After the ALIVE response, we can send host commands to the uCode */
1211 set_bit(STATUS_ALIVE, &priv->shrd->status);
1212
1213 /* Enable watchdog to monitor the driver tx queues */
1214 iwl_setup_watchdog(priv);
1215
1216 if (iwl_is_rfkill(priv->shrd))
1217 return -ERFKILL;
1218
1219 /* download priority table before any calibration request */
1220 if (priv->cfg->bt_params &&
1221 priv->cfg->bt_params->advanced_bt_coexist) {
1222 /* Configure Bluetooth device coexistence support */
1223 if (priv->cfg->bt_params->bt_sco_disable)
1224 priv->bt_enable_pspoll = false;
1225 else
1226 priv->bt_enable_pspoll = true;
1227
1228 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1229 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1230 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1231 iwlagn_send_advance_bt_config(priv);
1232 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1233 priv->cur_rssi_ctx = NULL;
1234
1235 iwlagn_send_prio_tbl(priv);
1236
1237 /* FIXME: w/a to force change uCode BT state machine */
1238 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1239 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1240 if (ret)
1241 return ret;
1242 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1243 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1244 if (ret)
1245 return ret;
1246 } else {
1247 /*
1248 * default is 2-wire BT coexexistence support
1249 */
1250 iwl_send_bt_config(priv);
1251 }
1252
1253 if (hw_params(priv).calib_rt_cfg)
1254 iwlagn_send_calib_cfg_rt(priv,
1255 hw_params(priv).calib_rt_cfg);
1256
1257 ieee80211_wake_queues(priv->hw);
1258
1259 priv->active_rate = IWL_RATES_MASK;
1260
1261 /* Configure Tx antenna selection based on H/W config */
1262 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1263
1264 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1265 struct iwl_rxon_cmd *active_rxon =
1266 (struct iwl_rxon_cmd *)&ctx->active;
1267 /* apply any changes in staging */
1268 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1269 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1270 } else {
1271 struct iwl_rxon_context *tmp;
1272 /* Initialize our rx_config data */
1273 for_each_context(priv, tmp)
1274 iwl_connection_init_rx_config(priv, tmp);
1275
1276 iwlagn_set_rxon_chain(priv, ctx);
1277 }
1278
1279 if (!priv->shrd->wowlan) {
1280 /* WoWLAN ucode will not reply in the same way, skip it */
1281 iwl_reset_run_time_calib(priv);
1282 }
1283
1284 set_bit(STATUS_READY, &priv->shrd->status);
1285
1286 /* Configure the adapter for unassociated operation */
1287 ret = iwlagn_commit_rxon(priv, ctx);
1288 if (ret)
1289 return ret;
1290
1291 /* At this point, the NIC is initialized and operational */
1292 iwl_rf_kill_ct_config(priv);
1293
1294 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1295
1296 return iwl_power_update_mode(priv, true);
1297 }
1298
1299 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1300
1301 void __iwl_down(struct iwl_priv *priv)
1302 {
1303 int exit_pending;
1304
1305 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1306
1307 iwl_scan_cancel_timeout(priv, 200);
1308
1309 /*
1310 * If active, scanning won't cancel it, so say it expired.
1311 * No race since we hold the mutex here and a new one
1312 * can't come in at this time.
1313 */
1314 ieee80211_remain_on_channel_expired(priv->hw);
1315
1316 exit_pending =
1317 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1318
1319 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1320 * to prevent rearm timer */
1321 del_timer_sync(&priv->watchdog);
1322
1323 iwl_clear_ucode_stations(priv, NULL);
1324 iwl_dealloc_bcast_stations(priv);
1325 iwl_clear_driver_stations(priv);
1326
1327 /* reset BT coex data */
1328 priv->bt_status = 0;
1329 priv->cur_rssi_ctx = NULL;
1330 priv->bt_is_sco = 0;
1331 if (priv->cfg->bt_params)
1332 priv->bt_traffic_load =
1333 priv->cfg->bt_params->bt_init_traffic_load;
1334 else
1335 priv->bt_traffic_load = 0;
1336 priv->bt_full_concurrent = false;
1337 priv->bt_ci_compliance = 0;
1338
1339 /* Wipe out the EXIT_PENDING status bit if we are not actually
1340 * exiting the module */
1341 if (!exit_pending)
1342 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1343
1344 if (priv->mac80211_registered)
1345 ieee80211_stop_queues(priv->hw);
1346
1347 iwl_trans_stop_device(trans(priv));
1348
1349 /* Clear out all status bits but a few that are stable across reset */
1350 priv->shrd->status &=
1351 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1352 STATUS_RF_KILL_HW |
1353 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1354 STATUS_GEO_CONFIGURED |
1355 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1356 STATUS_FW_ERROR |
1357 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1358 STATUS_EXIT_PENDING;
1359
1360 dev_kfree_skb(priv->beacon_skb);
1361 priv->beacon_skb = NULL;
1362 }
1363
1364 void iwl_down(struct iwl_priv *priv)
1365 {
1366 mutex_lock(&priv->shrd->mutex);
1367 __iwl_down(priv);
1368 mutex_unlock(&priv->shrd->mutex);
1369
1370 iwl_cancel_deferred_work(priv);
1371 }
1372
1373 /*****************************************************************************
1374 *
1375 * Workqueue callbacks
1376 *
1377 *****************************************************************************/
1378
1379 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1380 {
1381 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1382 run_time_calib_work);
1383
1384 mutex_lock(&priv->shrd->mutex);
1385
1386 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1387 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1388 mutex_unlock(&priv->shrd->mutex);
1389 return;
1390 }
1391
1392 if (priv->start_calib) {
1393 iwl_chain_noise_calibration(priv);
1394 iwl_sensitivity_calibration(priv);
1395 }
1396
1397 mutex_unlock(&priv->shrd->mutex);
1398 }
1399
1400 void iwlagn_prepare_restart(struct iwl_priv *priv)
1401 {
1402 struct iwl_rxon_context *ctx;
1403 bool bt_full_concurrent;
1404 u8 bt_ci_compliance;
1405 u8 bt_load;
1406 u8 bt_status;
1407 bool bt_is_sco;
1408
1409 lockdep_assert_held(&priv->shrd->mutex);
1410
1411 for_each_context(priv, ctx)
1412 ctx->vif = NULL;
1413 priv->is_open = 0;
1414
1415 /*
1416 * __iwl_down() will clear the BT status variables,
1417 * which is correct, but when we restart we really
1418 * want to keep them so restore them afterwards.
1419 *
1420 * The restart process will later pick them up and
1421 * re-configure the hw when we reconfigure the BT
1422 * command.
1423 */
1424 bt_full_concurrent = priv->bt_full_concurrent;
1425 bt_ci_compliance = priv->bt_ci_compliance;
1426 bt_load = priv->bt_traffic_load;
1427 bt_status = priv->bt_status;
1428 bt_is_sco = priv->bt_is_sco;
1429
1430 __iwl_down(priv);
1431
1432 priv->bt_full_concurrent = bt_full_concurrent;
1433 priv->bt_ci_compliance = bt_ci_compliance;
1434 priv->bt_traffic_load = bt_load;
1435 priv->bt_status = bt_status;
1436 priv->bt_is_sco = bt_is_sco;
1437 }
1438
1439 static void iwl_bg_restart(struct work_struct *data)
1440 {
1441 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1442
1443 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1444 return;
1445
1446 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1447 mutex_lock(&priv->shrd->mutex);
1448 iwlagn_prepare_restart(priv);
1449 mutex_unlock(&priv->shrd->mutex);
1450 iwl_cancel_deferred_work(priv);
1451 ieee80211_restart_hw(priv->hw);
1452 } else {
1453 WARN_ON(1);
1454 }
1455 }
1456
1457
1458
1459
1460 void iwlagn_disable_roc(struct iwl_priv *priv)
1461 {
1462 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1463
1464 lockdep_assert_held(&priv->shrd->mutex);
1465
1466 if (!priv->hw_roc_setup)
1467 return;
1468
1469 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1470 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1471
1472 priv->hw_roc_channel = NULL;
1473
1474 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1475
1476 iwlagn_commit_rxon(priv, ctx);
1477
1478 ctx->is_active = false;
1479 priv->hw_roc_setup = false;
1480 }
1481
1482 static void iwlagn_disable_roc_work(struct work_struct *work)
1483 {
1484 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1485 hw_roc_disable_work.work);
1486
1487 mutex_lock(&priv->shrd->mutex);
1488 iwlagn_disable_roc(priv);
1489 mutex_unlock(&priv->shrd->mutex);
1490 }
1491
1492 /*****************************************************************************
1493 *
1494 * driver setup and teardown
1495 *
1496 *****************************************************************************/
1497
1498 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1499 {
1500 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
1501
1502 init_waitqueue_head(&priv->shrd->wait_command_queue);
1503
1504 INIT_WORK(&priv->restart, iwl_bg_restart);
1505 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1506 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1507 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1508 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1509 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1510 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1511 iwlagn_disable_roc_work);
1512
1513 iwl_setup_scan_deferred_work(priv);
1514
1515 if (priv->cfg->lib->bt_setup_deferred_work)
1516 priv->cfg->lib->bt_setup_deferred_work(priv);
1517
1518 init_timer(&priv->statistics_periodic);
1519 priv->statistics_periodic.data = (unsigned long)priv;
1520 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1521
1522 init_timer(&priv->ucode_trace);
1523 priv->ucode_trace.data = (unsigned long)priv;
1524 priv->ucode_trace.function = iwl_bg_ucode_trace;
1525
1526 init_timer(&priv->watchdog);
1527 priv->watchdog.data = (unsigned long)priv;
1528 priv->watchdog.function = iwl_bg_watchdog;
1529 }
1530
1531 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
1532 {
1533 if (priv->cfg->lib->cancel_deferred_work)
1534 priv->cfg->lib->cancel_deferred_work(priv);
1535
1536 cancel_work_sync(&priv->run_time_calib_work);
1537 cancel_work_sync(&priv->beacon_update);
1538
1539 iwl_cancel_scan_deferred_work(priv);
1540
1541 cancel_work_sync(&priv->bt_full_concurrency);
1542 cancel_work_sync(&priv->bt_runtime_config);
1543 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1544
1545 del_timer_sync(&priv->statistics_periodic);
1546 del_timer_sync(&priv->ucode_trace);
1547 }
1548
1549 static void iwl_init_hw_rates(struct iwl_priv *priv,
1550 struct ieee80211_rate *rates)
1551 {
1552 int i;
1553
1554 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1555 rates[i].bitrate = iwl_rates[i].ieee * 5;
1556 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1557 rates[i].hw_value_short = i;
1558 rates[i].flags = 0;
1559 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1560 /*
1561 * If CCK != 1M then set short preamble rate flag.
1562 */
1563 rates[i].flags |=
1564 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1565 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1566 }
1567 }
1568 }
1569
1570 static int iwl_init_drv(struct iwl_priv *priv)
1571 {
1572 int ret;
1573
1574 spin_lock_init(&priv->shrd->sta_lock);
1575
1576 mutex_init(&priv->shrd->mutex);
1577
1578 INIT_LIST_HEAD(&priv->calib_results);
1579
1580 priv->ieee_channels = NULL;
1581 priv->ieee_rates = NULL;
1582 priv->band = IEEE80211_BAND_2GHZ;
1583
1584 priv->iw_mode = NL80211_IFTYPE_STATION;
1585 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1586 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1587 priv->agg_tids_count = 0;
1588
1589 /* initialize force reset */
1590 priv->force_reset[IWL_RF_RESET].reset_duration =
1591 IWL_DELAY_NEXT_FORCE_RF_RESET;
1592 priv->force_reset[IWL_FW_RESET].reset_duration =
1593 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1594
1595 priv->rx_statistics_jiffies = jiffies;
1596
1597 /* Choose which receivers/antennas to use */
1598 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1599
1600 iwl_init_scan_params(priv);
1601
1602 /* init bt coex */
1603 if (priv->cfg->bt_params &&
1604 priv->cfg->bt_params->advanced_bt_coexist) {
1605 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1606 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1607 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1608 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1609 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1610 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1611 }
1612
1613 ret = iwl_init_channel_map(priv);
1614 if (ret) {
1615 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1616 goto err;
1617 }
1618
1619 ret = iwl_init_geos(priv);
1620 if (ret) {
1621 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1622 goto err_free_channel_map;
1623 }
1624 iwl_init_hw_rates(priv, priv->ieee_rates);
1625
1626 return 0;
1627
1628 err_free_channel_map:
1629 iwl_free_channel_map(priv);
1630 err:
1631 return ret;
1632 }
1633
1634 static void iwl_uninit_drv(struct iwl_priv *priv)
1635 {
1636 iwl_calib_free_results(priv);
1637 iwl_free_geos(priv);
1638 iwl_free_channel_map(priv);
1639 if (priv->tx_cmd_pool)
1640 kmem_cache_destroy(priv->tx_cmd_pool);
1641 kfree(priv->scan_cmd);
1642 kfree(priv->beacon_cmd);
1643 kfree(rcu_dereference_raw(priv->noa_data));
1644 #ifdef CONFIG_IWLWIFI_DEBUGFS
1645 kfree(priv->wowlan_sram);
1646 #endif
1647 }
1648
1649
1650
1651 static u32 iwl_hw_detect(struct iwl_priv *priv)
1652 {
1653 return iwl_read32(bus(priv), CSR_HW_REV);
1654 }
1655
1656 /* Size of one Rx buffer in host DRAM */
1657 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1658 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1659
1660 static int iwl_set_hw_params(struct iwl_priv *priv)
1661 {
1662 if (iwlagn_mod_params.amsdu_size_8K)
1663 hw_params(priv).rx_page_order =
1664 get_order(IWL_RX_BUF_SIZE_8K);
1665 else
1666 hw_params(priv).rx_page_order =
1667 get_order(IWL_RX_BUF_SIZE_4K);
1668
1669 if (iwlagn_mod_params.disable_11n)
1670 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1671
1672 hw_params(priv).num_ampdu_queues =
1673 priv->cfg->base_params->num_of_ampdu_queues;
1674 hw_params(priv).shadow_reg_enable =
1675 priv->cfg->base_params->shadow_reg_enable;
1676 hw_params(priv).sku = priv->cfg->sku;
1677 hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
1678
1679 /* Device-specific setup */
1680 return priv->cfg->lib->set_hw_params(priv);
1681 }
1682
1683
1684
1685 static void iwl_debug_config(struct iwl_priv *priv)
1686 {
1687 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1688 #ifdef CONFIG_IWLWIFI_DEBUG
1689 "enabled\n");
1690 #else
1691 "disabled\n");
1692 #endif
1693 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1694 #ifdef CONFIG_IWLWIFI_DEBUGFS
1695 "enabled\n");
1696 #else
1697 "disabled\n");
1698 #endif
1699 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1700 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1701 "enabled\n");
1702 #else
1703 "disabled\n");
1704 #endif
1705
1706 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_SVTOOL "
1707 #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL
1708 "enabled\n");
1709 #else
1710 "disabled\n");
1711 #endif
1712 }
1713
1714 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
1715 struct iwl_cfg *cfg)
1716 {
1717 int err = 0;
1718 struct iwl_priv *priv;
1719 struct ieee80211_hw *hw;
1720 u16 num_mac;
1721 u32 hw_rev;
1722
1723 /************************
1724 * 1. Allocating HW data
1725 ************************/
1726 hw = iwl_alloc_all();
1727 if (!hw) {
1728 pr_err("%s: Cannot allocate network device\n", cfg->name);
1729 err = -ENOMEM;
1730 goto out;
1731 }
1732
1733 priv = hw->priv;
1734 priv->shrd = &priv->_shrd;
1735 bus->shrd = priv->shrd;
1736 priv->shrd->bus = bus;
1737 priv->shrd->priv = priv;
1738
1739 priv->shrd->trans = trans_ops->alloc(priv->shrd);
1740 if (priv->shrd->trans == NULL) {
1741 err = -ENOMEM;
1742 goto out_free_traffic_mem;
1743 }
1744
1745 /* At this point both hw and priv are allocated. */
1746
1747 SET_IEEE80211_DEV(hw, bus(priv)->dev);
1748
1749 /* what debugging capabilities we have */
1750 iwl_debug_config(priv);
1751
1752 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1753 priv->cfg = cfg;
1754
1755 /* is antenna coupling more than 35dB ? */
1756 priv->bt_ant_couple_ok =
1757 (iwlagn_mod_params.ant_coupling >
1758 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1759 true : false;
1760
1761 /* enable/disable bt channel inhibition */
1762 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1763 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1764 (priv->bt_ch_announce) ? "On" : "Off");
1765
1766 if (iwl_alloc_traffic_mem(priv))
1767 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1768
1769 /* these spin locks will be used in apm_ops.init and EEPROM access
1770 * we should init now
1771 */
1772 spin_lock_init(&bus(priv)->reg_lock);
1773 spin_lock_init(&priv->shrd->lock);
1774
1775 /*
1776 * stop and reset the on-board processor just in case it is in a
1777 * strange state ... like being left stranded by a primary kernel
1778 * and this is now the kdump kernel trying to start up
1779 */
1780 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1781
1782 /***********************
1783 * 3. Read REV register
1784 ***********************/
1785 hw_rev = iwl_hw_detect(priv);
1786 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1787 priv->cfg->name, hw_rev);
1788
1789 err = iwl_trans_request_irq(trans(priv));
1790 if (err)
1791 goto out_free_trans;
1792
1793 if (iwl_trans_prepare_card_hw(trans(priv))) {
1794 err = -EIO;
1795 IWL_WARN(priv, "Failed, HW not ready\n");
1796 goto out_free_trans;
1797 }
1798
1799 /*****************
1800 * 4. Read EEPROM
1801 *****************/
1802 /* Read the EEPROM */
1803 err = iwl_eeprom_init(priv, hw_rev);
1804 if (err) {
1805 IWL_ERR(priv, "Unable to init EEPROM\n");
1806 goto out_free_trans;
1807 }
1808 err = iwl_eeprom_check_version(priv);
1809 if (err)
1810 goto out_free_eeprom;
1811
1812 err = iwl_eeprom_check_sku(priv);
1813 if (err)
1814 goto out_free_eeprom;
1815
1816 /* extract MAC Address */
1817 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
1818 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1819 priv->hw->wiphy->addresses = priv->addresses;
1820 priv->hw->wiphy->n_addresses = 1;
1821 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
1822 if (num_mac > 1) {
1823 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1824 ETH_ALEN);
1825 priv->addresses[1].addr[5]++;
1826 priv->hw->wiphy->n_addresses++;
1827 }
1828
1829 /************************
1830 * 5. Setup HW constants
1831 ************************/
1832 if (iwl_set_hw_params(priv)) {
1833 err = -ENOENT;
1834 IWL_ERR(priv, "failed to set hw parameters\n");
1835 goto out_free_eeprom;
1836 }
1837
1838 /*******************
1839 * 6. Setup priv
1840 *******************/
1841
1842 err = iwl_init_drv(priv);
1843 if (err)
1844 goto out_free_eeprom;
1845 /* At this point both hw and priv are initialized. */
1846
1847 /********************
1848 * 7. Setup services
1849 ********************/
1850 iwl_setup_deferred_work(priv);
1851 iwl_setup_rx_handlers(priv);
1852 iwl_testmode_init(priv);
1853
1854 /*********************************************
1855 * 8. Enable interrupts
1856 *********************************************/
1857
1858 iwl_enable_rfkill_int(priv);
1859
1860 /* If platform's RF_KILL switch is NOT set to KILL */
1861 if (iwl_read32(bus(priv),
1862 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1863 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1864 else
1865 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1866
1867 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
1868 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
1869
1870 iwl_power_initialize(priv);
1871 iwl_tt_initialize(priv);
1872
1873 init_completion(&priv->firmware_loading_complete);
1874
1875 err = iwl_request_firmware(priv, true);
1876 if (err)
1877 goto out_destroy_workqueue;
1878
1879 return 0;
1880
1881 out_destroy_workqueue:
1882 destroy_workqueue(priv->shrd->workqueue);
1883 priv->shrd->workqueue = NULL;
1884 iwl_uninit_drv(priv);
1885 out_free_eeprom:
1886 iwl_eeprom_free(priv);
1887 out_free_trans:
1888 iwl_trans_free(trans(priv));
1889 out_free_traffic_mem:
1890 iwl_free_traffic_mem(priv);
1891 ieee80211_free_hw(priv->hw);
1892 out:
1893 return err;
1894 }
1895
1896 void __devexit iwl_remove(struct iwl_priv * priv)
1897 {
1898 wait_for_completion(&priv->firmware_loading_complete);
1899
1900 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1901
1902 iwl_dbgfs_unregister(priv);
1903
1904 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1905 * to be called and iwl_down since we are removing the device
1906 * we need to set STATUS_EXIT_PENDING bit.
1907 */
1908 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1909
1910 iwl_testmode_cleanup(priv);
1911 iwl_leds_exit(priv);
1912
1913 if (priv->mac80211_registered) {
1914 ieee80211_unregister_hw(priv->hw);
1915 priv->mac80211_registered = 0;
1916 }
1917
1918 iwl_tt_exit(priv);
1919
1920 /*This will stop the queues, move the device to low power state */
1921 iwl_trans_stop_device(trans(priv));
1922
1923 iwl_dealloc_ucode(trans(priv));
1924
1925 iwl_eeprom_free(priv);
1926
1927 /*netif_stop_queue(dev); */
1928 flush_workqueue(priv->shrd->workqueue);
1929
1930 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1931 * priv->shrd->workqueue... so we can't take down the workqueue
1932 * until now... */
1933 destroy_workqueue(priv->shrd->workqueue);
1934 priv->shrd->workqueue = NULL;
1935 iwl_free_traffic_mem(priv);
1936
1937 iwl_trans_free(trans(priv));
1938
1939 iwl_uninit_drv(priv);
1940
1941 dev_kfree_skb(priv->beacon_skb);
1942
1943 ieee80211_free_hw(priv->hw);
1944 }
1945
1946
1947 /*****************************************************************************
1948 *
1949 * driver and module entry point
1950 *
1951 *****************************************************************************/
1952 static int __init iwl_init(void)
1953 {
1954
1955 int ret;
1956 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1957 pr_info(DRV_COPYRIGHT "\n");
1958
1959 ret = iwlagn_rate_control_register();
1960 if (ret) {
1961 pr_err("Unable to register rate control algorithm: %d\n", ret);
1962 return ret;
1963 }
1964
1965 ret = iwl_pci_register_driver();
1966
1967 if (ret)
1968 goto error_register;
1969 return ret;
1970
1971 error_register:
1972 iwlagn_rate_control_unregister();
1973 return ret;
1974 }
1975
1976 static void __exit iwl_exit(void)
1977 {
1978 iwl_pci_unregister_driver();
1979 iwlagn_rate_control_unregister();
1980 }
1981
1982 module_exit(iwl_exit);
1983 module_init(iwl_init);
1984
1985 #ifdef CONFIG_IWLWIFI_DEBUG
1986 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1987 S_IRUGO | S_IWUSR);
1988 MODULE_PARM_DESC(debug, "debug output mask");
1989 #endif
1990
1991 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1992 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1993 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1994 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1995 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
1996 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
1997 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1998 int, S_IRUGO);
1999 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2000 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2001 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2002
2003 module_param_named(ucode_alternative,
2004 iwlagn_mod_params.wanted_ucode_alternative,
2005 int, S_IRUGO);
2006 MODULE_PARM_DESC(ucode_alternative,
2007 "specify ucode alternative to use from ucode file");
2008
2009 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2010 int, S_IRUGO);
2011 MODULE_PARM_DESC(antenna_coupling,
2012 "specify antenna coupling in dB (defualt: 0 dB)");
2013
2014 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2015 bool, S_IRUGO);
2016 MODULE_PARM_DESC(bt_ch_inhibition,
2017 "Enable BT channel inhibition (default: enable)");
2018
2019 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2020 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2021
2022 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2023 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2024
2025 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2026 MODULE_PARM_DESC(wd_disable,
2027 "Disable stuck queue watchdog timer 0=system default, "
2028 "1=disable, 2=enable (default: 0)");
2029
2030 /*
2031 * set bt_coex_active to true, uCode will do kill/defer
2032 * every time the priority line is asserted (BT is sending signals on the
2033 * priority line in the PCIx).
2034 * set bt_coex_active to false, uCode will ignore the BT activity and
2035 * perform the normal operation
2036 *
2037 * User might experience transmit issue on some platform due to WiFi/BT
2038 * co-exist problem. The possible behaviors are:
2039 * Able to scan and finding all the available AP
2040 * Not able to associate with any AP
2041 * On those platforms, WiFi communication can be restored by set
2042 * "bt_coex_active" module parameter to "false"
2043 *
2044 * default: bt_coex_active = true (BT_COEX_ENABLE)
2045 */
2046 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2047 bool, S_IRUGO);
2048 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2049
2050 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2051 MODULE_PARM_DESC(led_mode, "0=system default, "
2052 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
2053
2054 module_param_named(power_save, iwlagn_mod_params.power_save,
2055 bool, S_IRUGO);
2056 MODULE_PARM_DESC(power_save,
2057 "enable WiFi power management (default: disable)");
2058
2059 module_param_named(power_level, iwlagn_mod_params.power_level,
2060 int, S_IRUGO);
2061 MODULE_PARM_DESC(power_level,
2062 "default power save level (range from 1 - 5, default: 1)");
2063
2064 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2065 bool, S_IRUGO);
2066 MODULE_PARM_DESC(auto_agg,
2067 "enable agg w/o check traffic load (default: enable)");
2068
2069 /*
2070 * For now, keep using power level 1 instead of automatically
2071 * adjusting ...
2072 */
2073 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2074 bool, S_IRUGO);
2075 MODULE_PARM_DESC(no_sleep_autoadjust,
2076 "don't automatically adjust sleep level "
2077 "according to maximum network latency (default: true)");
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