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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[mv-sheeva.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)");