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-wifi.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-agn-calib.h"
51 #include "iwl-agn.h"
52 #include "iwl-shared.h"
53 #include "iwl-bus.h"
54 #include "iwl-trans.h"
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 */
65 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #define DRV_VERSION IWLWIFI_VERSION VD
74
75
76 MODULE_DESCRIPTION(DRV_DESCRIPTION);
77 MODULE_VERSION(DRV_VERSION);
78 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
79 MODULE_LICENSE("GPL");
80 MODULE_ALIAS("iwlagn");
81
iwl_update_chain_flags(struct iwl_priv * priv)82 void iwl_update_chain_flags(struct iwl_priv *priv)
83 {
84 struct iwl_rxon_context *ctx;
85
86 for_each_context(priv, ctx) {
87 iwlagn_set_rxon_chain(priv, ctx);
88 if (ctx->active.rx_chain != ctx->staging.rx_chain)
89 iwlagn_commit_rxon(priv, ctx);
90 }
91 }
92
93 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
iwl_set_beacon_tim(struct iwl_priv * priv,struct iwl_tx_beacon_cmd * tx_beacon_cmd,u8 * beacon,u32 frame_size)94 static void iwl_set_beacon_tim(struct iwl_priv *priv,
95 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
96 u8 *beacon, u32 frame_size)
97 {
98 u16 tim_idx;
99 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
100
101 /*
102 * The index is relative to frame start but we start looking at the
103 * variable-length part of the beacon.
104 */
105 tim_idx = mgmt->u.beacon.variable - beacon;
106
107 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
108 while ((tim_idx < (frame_size - 2)) &&
109 (beacon[tim_idx] != WLAN_EID_TIM))
110 tim_idx += beacon[tim_idx+1] + 2;
111
112 /* If TIM field was found, set variables */
113 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
114 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
115 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
116 } else
117 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
118 }
119
iwlagn_send_beacon_cmd(struct iwl_priv * priv)120 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
121 {
122 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
123 struct iwl_host_cmd cmd = {
124 .id = REPLY_TX_BEACON,
125 .flags = CMD_SYNC,
126 };
127 struct ieee80211_tx_info *info;
128 u32 frame_size;
129 u32 rate_flags;
130 u32 rate;
131
132 /*
133 * We have to set up the TX command, the TX Beacon command, and the
134 * beacon contents.
135 */
136
137 lockdep_assert_held(&priv->shrd->mutex);
138
139 if (!priv->beacon_ctx) {
140 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
141 return 0;
142 }
143
144 if (WARN_ON(!priv->beacon_skb))
145 return -EINVAL;
146
147 /* Allocate beacon command */
148 if (!priv->beacon_cmd)
149 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
150 tx_beacon_cmd = priv->beacon_cmd;
151 if (!tx_beacon_cmd)
152 return -ENOMEM;
153
154 frame_size = priv->beacon_skb->len;
155
156 /* Set up TX command fields */
157 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
158 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
159 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
160 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
161 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
162
163 /* Set up TX beacon command fields */
164 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
165 frame_size);
166
167 /* Set up packet rate and flags */
168 info = IEEE80211_SKB_CB(priv->beacon_skb);
169
170 /*
171 * Let's set up the rate at least somewhat correctly;
172 * it will currently not actually be used by the uCode,
173 * it uses the broadcast station's rate instead.
174 */
175 if (info->control.rates[0].idx < 0 ||
176 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
177 rate = 0;
178 else
179 rate = info->control.rates[0].idx;
180
181 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
182 hw_params(priv).valid_tx_ant);
183 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
184
185 /* In mac80211, rates for 5 GHz start at 0 */
186 if (info->band == IEEE80211_BAND_5GHZ)
187 rate += IWL_FIRST_OFDM_RATE;
188 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
189 rate_flags |= RATE_MCS_CCK_MSK;
190
191 tx_beacon_cmd->tx.rate_n_flags =
192 iwl_hw_set_rate_n_flags(rate, rate_flags);
193
194 /* Submit command */
195 cmd.len[0] = sizeof(*tx_beacon_cmd);
196 cmd.data[0] = tx_beacon_cmd;
197 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
198 cmd.len[1] = frame_size;
199 cmd.data[1] = priv->beacon_skb->data;
200 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
201
202 return iwl_trans_send_cmd(trans(priv), &cmd);
203 }
204
iwl_bg_beacon_update(struct work_struct * work)205 static void iwl_bg_beacon_update(struct work_struct *work)
206 {
207 struct iwl_priv *priv =
208 container_of(work, struct iwl_priv, beacon_update);
209 struct sk_buff *beacon;
210
211 mutex_lock(&priv->shrd->mutex);
212 if (!priv->beacon_ctx) {
213 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
214 goto out;
215 }
216
217 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
218 /*
219 * The ucode will send beacon notifications even in
220 * IBSS mode, but we don't want to process them. But
221 * we need to defer the type check to here due to
222 * requiring locking around the beacon_ctx access.
223 */
224 goto out;
225 }
226
227 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
228 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
229 if (!beacon) {
230 IWL_ERR(priv, "update beacon failed -- keeping old\n");
231 goto out;
232 }
233
234 /* new beacon skb is allocated every time; dispose previous.*/
235 dev_kfree_skb(priv->beacon_skb);
236
237 priv->beacon_skb = beacon;
238
239 iwlagn_send_beacon_cmd(priv);
240 out:
241 mutex_unlock(&priv->shrd->mutex);
242 }
243
iwl_bg_bt_runtime_config(struct work_struct * work)244 static void iwl_bg_bt_runtime_config(struct work_struct *work)
245 {
246 struct iwl_priv *priv =
247 container_of(work, struct iwl_priv, bt_runtime_config);
248
249 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
250 return;
251
252 /* dont send host command if rf-kill is on */
253 if (!iwl_is_ready_rf(priv->shrd))
254 return;
255 iwlagn_send_advance_bt_config(priv);
256 }
257
iwl_bg_bt_full_concurrency(struct work_struct * work)258 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
259 {
260 struct iwl_priv *priv =
261 container_of(work, struct iwl_priv, bt_full_concurrency);
262 struct iwl_rxon_context *ctx;
263
264 mutex_lock(&priv->shrd->mutex);
265
266 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
267 goto out;
268
269 /* dont send host command if rf-kill is on */
270 if (!iwl_is_ready_rf(priv->shrd))
271 goto out;
272
273 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
274 priv->bt_full_concurrent ?
275 "full concurrency" : "3-wire");
276
277 /*
278 * LQ & RXON updated cmds must be sent before BT Config cmd
279 * to avoid 3-wire collisions
280 */
281 for_each_context(priv, ctx) {
282 iwlagn_set_rxon_chain(priv, ctx);
283 iwlagn_commit_rxon(priv, ctx);
284 }
285
286 iwlagn_send_advance_bt_config(priv);
287 out:
288 mutex_unlock(&priv->shrd->mutex);
289 }
290
291 /**
292 * iwl_bg_statistics_periodic - Timer callback to queue statistics
293 *
294 * This callback is provided in order to send a statistics request.
295 *
296 * This timer function is continually reset to execute within
297 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
298 * was received. We need to ensure we receive the statistics in order
299 * to update the temperature used for calibrating the TXPOWER.
300 */
iwl_bg_statistics_periodic(unsigned long data)301 static void iwl_bg_statistics_periodic(unsigned long data)
302 {
303 struct iwl_priv *priv = (struct iwl_priv *)data;
304
305 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
306 return;
307
308 /* dont send host command if rf-kill is on */
309 if (!iwl_is_ready_rf(priv->shrd))
310 return;
311
312 iwl_send_statistics_request(priv, CMD_ASYNC, false);
313 }
314
315
iwl_print_cont_event_trace(struct iwl_priv * priv,u32 base,u32 start_idx,u32 num_events,u32 mode)316 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
317 u32 start_idx, u32 num_events,
318 u32 mode)
319 {
320 u32 i;
321 u32 ptr; /* SRAM byte address of log data */
322 u32 ev, time, data; /* event log data */
323 unsigned long reg_flags;
324
325 if (mode == 0)
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
327 else
328 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
329
330 /* Make sure device is powered up for SRAM reads */
331 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
332 if (iwl_grab_nic_access(bus(priv))) {
333 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
334 return;
335 }
336
337 /* Set starting address; reads will auto-increment */
338 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
339 rmb();
340
341 /*
342 * "time" is actually "data" for mode 0 (no timestamp).
343 * place event id # at far right for easier visual parsing.
344 */
345 for (i = 0; i < num_events; i++) {
346 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
347 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
348 if (mode == 0) {
349 trace_iwlwifi_dev_ucode_cont_event(priv,
350 0, time, ev);
351 } else {
352 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
353 trace_iwlwifi_dev_ucode_cont_event(priv,
354 time, data, ev);
355 }
356 }
357 /* Allow device to power down */
358 iwl_release_nic_access(bus(priv));
359 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
360 }
361
iwl_continuous_event_trace(struct iwl_priv * priv)362 static void iwl_continuous_event_trace(struct iwl_priv *priv)
363 {
364 u32 capacity; /* event log capacity in # entries */
365 u32 base; /* SRAM byte address of event log header */
366 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
367 u32 num_wraps; /* # times uCode wrapped to top of log */
368 u32 next_entry; /* index of next entry to be written by uCode */
369
370 base = priv->shrd->device_pointers.error_event_table;
371 if (iwlagn_hw_valid_rtc_data_addr(base)) {
372 capacity = iwl_read_targ_mem(bus(priv), base);
373 num_wraps = iwl_read_targ_mem(bus(priv),
374 base + (2 * sizeof(u32)));
375 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
376 next_entry = iwl_read_targ_mem(bus(priv),
377 base + (3 * sizeof(u32)));
378 } else
379 return;
380
381 if (num_wraps == priv->event_log.num_wraps) {
382 iwl_print_cont_event_trace(priv,
383 base, priv->event_log.next_entry,
384 next_entry - priv->event_log.next_entry,
385 mode);
386 priv->event_log.non_wraps_count++;
387 } else {
388 if ((num_wraps - priv->event_log.num_wraps) > 1)
389 priv->event_log.wraps_more_count++;
390 else
391 priv->event_log.wraps_once_count++;
392 trace_iwlwifi_dev_ucode_wrap_event(priv,
393 num_wraps - priv->event_log.num_wraps,
394 next_entry, priv->event_log.next_entry);
395 if (next_entry < priv->event_log.next_entry) {
396 iwl_print_cont_event_trace(priv, base,
397 priv->event_log.next_entry,
398 capacity - priv->event_log.next_entry,
399 mode);
400
401 iwl_print_cont_event_trace(priv, base, 0,
402 next_entry, mode);
403 } else {
404 iwl_print_cont_event_trace(priv, base,
405 next_entry, capacity - next_entry,
406 mode);
407
408 iwl_print_cont_event_trace(priv, base, 0,
409 next_entry, mode);
410 }
411 }
412 priv->event_log.num_wraps = num_wraps;
413 priv->event_log.next_entry = next_entry;
414 }
415
416 /**
417 * iwl_bg_ucode_trace - Timer callback to log ucode event
418 *
419 * The timer is continually set to execute every
420 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
421 * this function is to perform continuous uCode event logging operation
422 * if enabled
423 */
iwl_bg_ucode_trace(unsigned long data)424 static void iwl_bg_ucode_trace(unsigned long data)
425 {
426 struct iwl_priv *priv = (struct iwl_priv *)data;
427
428 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
429 return;
430
431 if (priv->event_log.ucode_trace) {
432 iwl_continuous_event_trace(priv);
433 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
434 mod_timer(&priv->ucode_trace,
435 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
436 }
437 }
438
iwl_bg_tx_flush(struct work_struct * work)439 static void iwl_bg_tx_flush(struct work_struct *work)
440 {
441 struct iwl_priv *priv =
442 container_of(work, struct iwl_priv, tx_flush);
443
444 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
445 return;
446
447 /* do nothing if rf-kill is on */
448 if (!iwl_is_ready_rf(priv->shrd))
449 return;
450
451 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
452 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
453 }
454
iwl_init_context(struct iwl_priv * priv,u32 ucode_flags)455 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
456 {
457 int i;
458
459 /*
460 * The default context is always valid,
461 * the PAN context depends on uCode.
462 */
463 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
464 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
465 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
466
467 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
468 priv->contexts[i].ctxid = i;
469
470 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
471 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
472 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
473 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
474 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
475 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
476 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
477 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
478 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
479 BIT(NL80211_IFTYPE_ADHOC);
480 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
481 BIT(NL80211_IFTYPE_STATION);
482 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
483 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
484 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
485 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
486
487 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
488 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
489 REPLY_WIPAN_RXON_TIMING;
490 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
491 REPLY_WIPAN_RXON_ASSOC;
492 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
493 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
494 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
495 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
496 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
497 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
498 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
499
500 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
501 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
502 BIT(NL80211_IFTYPE_P2P_CLIENT) |
503 BIT(NL80211_IFTYPE_P2P_GO);
504
505 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
506 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
507 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
508
509 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
510 }
511
512 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
513
514 #define UCODE_EXPERIMENTAL_INDEX 100
515 #define UCODE_EXPERIMENTAL_TAG "exp"
516
iwl_request_firmware(struct iwl_priv * priv,bool first)517 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
518 {
519 const char *name_pre = cfg(priv)->fw_name_pre;
520 char tag[8];
521
522 if (first) {
523 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
524 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
525 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
526 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
527 #endif
528 priv->fw_index = cfg(priv)->ucode_api_max;
529 sprintf(tag, "%d", priv->fw_index);
530 } else {
531 priv->fw_index--;
532 sprintf(tag, "%d", priv->fw_index);
533 }
534
535 if (priv->fw_index < cfg(priv)->ucode_api_min) {
536 IWL_ERR(priv, "no suitable firmware found!\n");
537 return -ENOENT;
538 }
539
540 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
541
542 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
543 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
544 ? "EXPERIMENTAL " : "",
545 priv->firmware_name);
546
547 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
548 bus(priv)->dev,
549 GFP_KERNEL, priv, iwl_ucode_callback);
550 }
551
552 struct iwlagn_firmware_pieces {
553 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
554 size_t inst_size, data_size, init_size, init_data_size,
555 wowlan_inst_size, wowlan_data_size;
556
557 u32 build;
558
559 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
560 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
561 };
562
iwlagn_load_legacy_firmware(struct iwl_priv * priv,const struct firmware * ucode_raw,struct iwlagn_firmware_pieces * pieces)563 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
564 const struct firmware *ucode_raw,
565 struct iwlagn_firmware_pieces *pieces)
566 {
567 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
568 u32 api_ver, hdr_size;
569 const u8 *src;
570
571 priv->ucode_ver = le32_to_cpu(ucode->ver);
572 api_ver = IWL_UCODE_API(priv->ucode_ver);
573
574 switch (api_ver) {
575 default:
576 hdr_size = 28;
577 if (ucode_raw->size < hdr_size) {
578 IWL_ERR(priv, "File size too small!\n");
579 return -EINVAL;
580 }
581 pieces->build = le32_to_cpu(ucode->u.v2.build);
582 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
583 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
584 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
585 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
586 src = ucode->u.v2.data;
587 break;
588 case 0:
589 case 1:
590 case 2:
591 hdr_size = 24;
592 if (ucode_raw->size < hdr_size) {
593 IWL_ERR(priv, "File size too small!\n");
594 return -EINVAL;
595 }
596 pieces->build = 0;
597 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
598 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
599 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
600 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
601 src = ucode->u.v1.data;
602 break;
603 }
604
605 /* Verify size of file vs. image size info in file's header */
606 if (ucode_raw->size != hdr_size + pieces->inst_size +
607 pieces->data_size + pieces->init_size +
608 pieces->init_data_size) {
609
610 IWL_ERR(priv,
611 "uCode file size %d does not match expected size\n",
612 (int)ucode_raw->size);
613 return -EINVAL;
614 }
615
616 pieces->inst = src;
617 src += pieces->inst_size;
618 pieces->data = src;
619 src += pieces->data_size;
620 pieces->init = src;
621 src += pieces->init_size;
622 pieces->init_data = src;
623 src += pieces->init_data_size;
624
625 return 0;
626 }
627
iwlagn_load_firmware(struct iwl_priv * priv,const struct firmware * ucode_raw,struct iwlagn_firmware_pieces * pieces,struct iwlagn_ucode_capabilities * capa)628 static int iwlagn_load_firmware(struct iwl_priv *priv,
629 const struct firmware *ucode_raw,
630 struct iwlagn_firmware_pieces *pieces,
631 struct iwlagn_ucode_capabilities *capa)
632 {
633 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
634 struct iwl_ucode_tlv *tlv;
635 size_t len = ucode_raw->size;
636 const u8 *data;
637 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
638 int tmp;
639 u64 alternatives;
640 u32 tlv_len;
641 enum iwl_ucode_tlv_type tlv_type;
642 const u8 *tlv_data;
643
644 if (len < sizeof(*ucode)) {
645 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
646 return -EINVAL;
647 }
648
649 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
650 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
651 le32_to_cpu(ucode->magic));
652 return -EINVAL;
653 }
654
655 /*
656 * Check which alternatives are present, and "downgrade"
657 * when the chosen alternative is not present, warning
658 * the user when that happens. Some files may not have
659 * any alternatives, so don't warn in that case.
660 */
661 alternatives = le64_to_cpu(ucode->alternatives);
662 tmp = wanted_alternative;
663 if (wanted_alternative > 63)
664 wanted_alternative = 63;
665 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
666 wanted_alternative--;
667 if (wanted_alternative && wanted_alternative != tmp)
668 IWL_WARN(priv,
669 "uCode alternative %d not available, choosing %d\n",
670 tmp, wanted_alternative);
671
672 priv->ucode_ver = le32_to_cpu(ucode->ver);
673 pieces->build = le32_to_cpu(ucode->build);
674 data = ucode->data;
675
676 len -= sizeof(*ucode);
677
678 while (len >= sizeof(*tlv)) {
679 u16 tlv_alt;
680
681 len -= sizeof(*tlv);
682 tlv = (void *)data;
683
684 tlv_len = le32_to_cpu(tlv->length);
685 tlv_type = le16_to_cpu(tlv->type);
686 tlv_alt = le16_to_cpu(tlv->alternative);
687 tlv_data = tlv->data;
688
689 if (len < tlv_len) {
690 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
691 len, tlv_len);
692 return -EINVAL;
693 }
694 len -= ALIGN(tlv_len, 4);
695 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
696
697 /*
698 * Alternative 0 is always valid.
699 *
700 * Skip alternative TLVs that are not selected.
701 */
702 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
703 continue;
704
705 switch (tlv_type) {
706 case IWL_UCODE_TLV_INST:
707 pieces->inst = tlv_data;
708 pieces->inst_size = tlv_len;
709 break;
710 case IWL_UCODE_TLV_DATA:
711 pieces->data = tlv_data;
712 pieces->data_size = tlv_len;
713 break;
714 case IWL_UCODE_TLV_INIT:
715 pieces->init = tlv_data;
716 pieces->init_size = tlv_len;
717 break;
718 case IWL_UCODE_TLV_INIT_DATA:
719 pieces->init_data = tlv_data;
720 pieces->init_data_size = tlv_len;
721 break;
722 case IWL_UCODE_TLV_BOOT:
723 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
724 break;
725 case IWL_UCODE_TLV_PROBE_MAX_LEN:
726 if (tlv_len != sizeof(u32))
727 goto invalid_tlv_len;
728 capa->max_probe_length =
729 le32_to_cpup((__le32 *)tlv_data);
730 break;
731 case IWL_UCODE_TLV_PAN:
732 if (tlv_len)
733 goto invalid_tlv_len;
734 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
735 break;
736 case IWL_UCODE_TLV_FLAGS:
737 /* must be at least one u32 */
738 if (tlv_len < sizeof(u32))
739 goto invalid_tlv_len;
740 /* and a proper number of u32s */
741 if (tlv_len % sizeof(u32))
742 goto invalid_tlv_len;
743 /*
744 * This driver only reads the first u32 as
745 * right now no more features are defined,
746 * if that changes then either the driver
747 * will not work with the new firmware, or
748 * it'll not take advantage of new features.
749 */
750 capa->flags = le32_to_cpup((__le32 *)tlv_data);
751 break;
752 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
753 if (tlv_len != sizeof(u32))
754 goto invalid_tlv_len;
755 pieces->init_evtlog_ptr =
756 le32_to_cpup((__le32 *)tlv_data);
757 break;
758 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
759 if (tlv_len != sizeof(u32))
760 goto invalid_tlv_len;
761 pieces->init_evtlog_size =
762 le32_to_cpup((__le32 *)tlv_data);
763 break;
764 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
765 if (tlv_len != sizeof(u32))
766 goto invalid_tlv_len;
767 pieces->init_errlog_ptr =
768 le32_to_cpup((__le32 *)tlv_data);
769 break;
770 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
771 if (tlv_len != sizeof(u32))
772 goto invalid_tlv_len;
773 pieces->inst_evtlog_ptr =
774 le32_to_cpup((__le32 *)tlv_data);
775 break;
776 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
777 if (tlv_len != sizeof(u32))
778 goto invalid_tlv_len;
779 pieces->inst_evtlog_size =
780 le32_to_cpup((__le32 *)tlv_data);
781 break;
782 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
783 if (tlv_len != sizeof(u32))
784 goto invalid_tlv_len;
785 pieces->inst_errlog_ptr =
786 le32_to_cpup((__le32 *)tlv_data);
787 break;
788 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
789 if (tlv_len)
790 goto invalid_tlv_len;
791 priv->enhance_sensitivity_table = true;
792 break;
793 case IWL_UCODE_TLV_WOWLAN_INST:
794 pieces->wowlan_inst = tlv_data;
795 pieces->wowlan_inst_size = tlv_len;
796 break;
797 case IWL_UCODE_TLV_WOWLAN_DATA:
798 pieces->wowlan_data = tlv_data;
799 pieces->wowlan_data_size = tlv_len;
800 break;
801 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
802 if (tlv_len != sizeof(u32))
803 goto invalid_tlv_len;
804 capa->standard_phy_calibration_size =
805 le32_to_cpup((__le32 *)tlv_data);
806 break;
807 default:
808 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
809 break;
810 }
811 }
812
813 if (len) {
814 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
815 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
816 return -EINVAL;
817 }
818
819 return 0;
820
821 invalid_tlv_len:
822 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
823 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
824
825 return -EINVAL;
826 }
827
828 /**
829 * iwl_ucode_callback - callback when firmware was loaded
830 *
831 * If loaded successfully, copies the firmware into buffers
832 * for the card to fetch (via DMA).
833 */
iwl_ucode_callback(const struct firmware * ucode_raw,void * context)834 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
835 {
836 struct iwl_priv *priv = context;
837 struct iwl_ucode_header *ucode;
838 int err;
839 struct iwlagn_firmware_pieces pieces;
840 const unsigned int api_max = cfg(priv)->ucode_api_max;
841 unsigned int api_ok = cfg(priv)->ucode_api_ok;
842 const unsigned int api_min = cfg(priv)->ucode_api_min;
843 u32 api_ver;
844 char buildstr[25];
845 u32 build;
846 struct iwlagn_ucode_capabilities ucode_capa = {
847 .max_probe_length = 200,
848 .standard_phy_calibration_size =
849 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
850 };
851
852 if (!api_ok)
853 api_ok = api_max;
854
855 memset(&pieces, 0, sizeof(pieces));
856
857 if (!ucode_raw) {
858 if (priv->fw_index <= api_ok)
859 IWL_ERR(priv,
860 "request for firmware file '%s' failed.\n",
861 priv->firmware_name);
862 goto try_again;
863 }
864
865 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
866 priv->firmware_name, ucode_raw->size);
867
868 /* Make sure that we got at least the API version number */
869 if (ucode_raw->size < 4) {
870 IWL_ERR(priv, "File size way too small!\n");
871 goto try_again;
872 }
873
874 /* Data from ucode file: header followed by uCode images */
875 ucode = (struct iwl_ucode_header *)ucode_raw->data;
876
877 if (ucode->ver)
878 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
879 else
880 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
881 &ucode_capa);
882
883 if (err)
884 goto try_again;
885
886 api_ver = IWL_UCODE_API(priv->ucode_ver);
887 build = pieces.build;
888
889 /*
890 * api_ver should match the api version forming part of the
891 * firmware filename ... but we don't check for that and only rely
892 * on the API version read from firmware header from here on forward
893 */
894 /* no api version check required for experimental uCode */
895 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
896 if (api_ver < api_min || api_ver > api_max) {
897 IWL_ERR(priv,
898 "Driver unable to support your firmware API. "
899 "Driver supports v%u, firmware is v%u.\n",
900 api_max, api_ver);
901 goto try_again;
902 }
903
904 if (api_ver < api_ok) {
905 if (api_ok != api_max)
906 IWL_ERR(priv, "Firmware has old API version, "
907 "expected v%u through v%u, got v%u.\n",
908 api_ok, api_max, api_ver);
909 else
910 IWL_ERR(priv, "Firmware has old API version, "
911 "expected v%u, got v%u.\n",
912 api_max, api_ver);
913 IWL_ERR(priv, "New firmware can be obtained from "
914 "http://www.intellinuxwireless.org/.\n");
915 }
916 }
917
918 if (build)
919 sprintf(buildstr, " build %u%s", build,
920 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
921 ? " (EXP)" : "");
922 else
923 buildstr[0] = '\0';
924
925 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
926 IWL_UCODE_MAJOR(priv->ucode_ver),
927 IWL_UCODE_MINOR(priv->ucode_ver),
928 IWL_UCODE_API(priv->ucode_ver),
929 IWL_UCODE_SERIAL(priv->ucode_ver),
930 buildstr);
931
932 snprintf(priv->hw->wiphy->fw_version,
933 sizeof(priv->hw->wiphy->fw_version),
934 "%u.%u.%u.%u%s",
935 IWL_UCODE_MAJOR(priv->ucode_ver),
936 IWL_UCODE_MINOR(priv->ucode_ver),
937 IWL_UCODE_API(priv->ucode_ver),
938 IWL_UCODE_SERIAL(priv->ucode_ver),
939 buildstr);
940
941 /*
942 * For any of the failures below (before allocating pci memory)
943 * we will try to load a version with a smaller API -- maybe the
944 * user just got a corrupted version of the latest API.
945 */
946
947 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
948 priv->ucode_ver);
949 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
950 pieces.inst_size);
951 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
952 pieces.data_size);
953 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
954 pieces.init_size);
955 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
956 pieces.init_data_size);
957
958 /* Verify that uCode images will fit in card's SRAM */
959 if (pieces.inst_size > hw_params(priv).max_inst_size) {
960 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
961 pieces.inst_size);
962 goto try_again;
963 }
964
965 if (pieces.data_size > hw_params(priv).max_data_size) {
966 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
967 pieces.data_size);
968 goto try_again;
969 }
970
971 if (pieces.init_size > hw_params(priv).max_inst_size) {
972 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
973 pieces.init_size);
974 goto try_again;
975 }
976
977 if (pieces.init_data_size > hw_params(priv).max_data_size) {
978 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
979 pieces.init_data_size);
980 goto try_again;
981 }
982
983 /* Allocate ucode buffers for card's bus-master loading ... */
984
985 /* Runtime instructions and 2 copies of data:
986 * 1) unmodified from disk
987 * 2) backup cache for save/restore during power-downs */
988 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.code,
989 pieces.inst, pieces.inst_size))
990 goto err_pci_alloc;
991 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.data,
992 pieces.data, pieces.data_size))
993 goto err_pci_alloc;
994
995 /* Initialization instructions and data */
996 if (pieces.init_size && pieces.init_data_size) {
997 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.code,
998 pieces.init, pieces.init_size))
999 goto err_pci_alloc;
1000 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.data,
1001 pieces.init_data, pieces.init_data_size))
1002 goto err_pci_alloc;
1003 }
1004
1005 /* WoWLAN instructions and data */
1006 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1007 if (iwl_alloc_fw_desc(bus(priv),
1008 &trans(priv)->ucode_wowlan.code,
1009 pieces.wowlan_inst,
1010 pieces.wowlan_inst_size))
1011 goto err_pci_alloc;
1012 if (iwl_alloc_fw_desc(bus(priv),
1013 &trans(priv)->ucode_wowlan.data,
1014 pieces.wowlan_data,
1015 pieces.wowlan_data_size))
1016 goto err_pci_alloc;
1017 }
1018
1019 /* Now that we can no longer fail, copy information */
1020
1021 /*
1022 * The (size - 16) / 12 formula is based on the information recorded
1023 * for each event, which is of mode 1 (including timestamp) for all
1024 * new microcodes that include this information.
1025 */
1026 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1027 if (pieces.init_evtlog_size)
1028 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1029 else
1030 priv->init_evtlog_size =
1031 cfg(priv)->base_params->max_event_log_size;
1032 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1033 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1034 if (pieces.inst_evtlog_size)
1035 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1036 else
1037 priv->inst_evtlog_size =
1038 cfg(priv)->base_params->max_event_log_size;
1039 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1040 #ifndef CONFIG_IWLWIFI_P2P
1041 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1042 #endif
1043
1044 priv->new_scan_threshold_behaviour =
1045 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1046
1047 if (!(cfg(priv)->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1048 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1049
1050 /*
1051 * if not PAN, then don't support P2P -- might be a uCode
1052 * packaging bug or due to the eeprom check above
1053 */
1054 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1055 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1056
1057 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1058 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1059 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1060 } else {
1061 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1062 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1063 }
1064 /*
1065 * figure out the offset of chain noise reset and gain commands
1066 * base on the size of standard phy calibration commands table size
1067 */
1068 if (ucode_capa.standard_phy_calibration_size >
1069 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1070 ucode_capa.standard_phy_calibration_size =
1071 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1072
1073 priv->phy_calib_chain_noise_reset_cmd =
1074 ucode_capa.standard_phy_calibration_size;
1075 priv->phy_calib_chain_noise_gain_cmd =
1076 ucode_capa.standard_phy_calibration_size + 1;
1077
1078 /* initialize all valid contexts */
1079 iwl_init_context(priv, ucode_capa.flags);
1080
1081 /**************************************************
1082 * This is still part of probe() in a sense...
1083 *
1084 * 9. Setup and register with mac80211 and debugfs
1085 **************************************************/
1086 err = iwlagn_mac_setup_register(priv, &ucode_capa);
1087 if (err)
1088 goto out_unbind;
1089
1090 err = iwl_dbgfs_register(priv, DRV_NAME);
1091 if (err)
1092 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1093
1094 /* We have our copies now, allow OS release its copies */
1095 release_firmware(ucode_raw);
1096 complete(&priv->firmware_loading_complete);
1097 return;
1098
1099 try_again:
1100 /* try next, if any */
1101 if (iwl_request_firmware(priv, false))
1102 goto out_unbind;
1103 release_firmware(ucode_raw);
1104 return;
1105
1106 err_pci_alloc:
1107 IWL_ERR(priv, "failed to allocate pci memory\n");
1108 iwl_dealloc_ucode(trans(priv));
1109 out_unbind:
1110 complete(&priv->firmware_loading_complete);
1111 device_release_driver(bus(priv)->dev);
1112 release_firmware(ucode_raw);
1113 }
1114
iwl_rf_kill_ct_config(struct iwl_priv * priv)1115 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1116 {
1117 struct iwl_ct_kill_config cmd;
1118 struct iwl_ct_kill_throttling_config adv_cmd;
1119 unsigned long flags;
1120 int ret = 0;
1121
1122 spin_lock_irqsave(&priv->shrd->lock, flags);
1123 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1124 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1125 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1126 priv->thermal_throttle.ct_kill_toggle = false;
1127
1128 if (cfg(priv)->base_params->support_ct_kill_exit) {
1129 adv_cmd.critical_temperature_enter =
1130 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1131 adv_cmd.critical_temperature_exit =
1132 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1133
1134 ret = iwl_trans_send_cmd_pdu(trans(priv),
1135 REPLY_CT_KILL_CONFIG_CMD,
1136 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1137 if (ret)
1138 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1139 else
1140 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1141 "succeeded, critical temperature enter is %d,"
1142 "exit is %d\n",
1143 hw_params(priv).ct_kill_threshold,
1144 hw_params(priv).ct_kill_exit_threshold);
1145 } else {
1146 cmd.critical_temperature_R =
1147 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1148
1149 ret = iwl_trans_send_cmd_pdu(trans(priv),
1150 REPLY_CT_KILL_CONFIG_CMD,
1151 CMD_SYNC, sizeof(cmd), &cmd);
1152 if (ret)
1153 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1154 else
1155 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1156 "succeeded, "
1157 "critical temperature is %d\n",
1158 hw_params(priv).ct_kill_threshold);
1159 }
1160 }
1161
iwlagn_send_calib_cfg_rt(struct iwl_priv * priv,u32 cfg)1162 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1163 {
1164 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1165 struct iwl_host_cmd cmd = {
1166 .id = CALIBRATION_CFG_CMD,
1167 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1168 .data = { &calib_cfg_cmd, },
1169 };
1170
1171 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1172 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1173 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1174
1175 return iwl_trans_send_cmd(trans(priv), &cmd);
1176 }
1177
1178
iwlagn_send_tx_ant_config(struct iwl_priv * priv,u8 valid_tx_ant)1179 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1180 {
1181 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1182 .valid = cpu_to_le32(valid_tx_ant),
1183 };
1184
1185 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1186 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1187 return iwl_trans_send_cmd_pdu(trans(priv),
1188 TX_ANT_CONFIGURATION_CMD,
1189 CMD_SYNC,
1190 sizeof(struct iwl_tx_ant_config_cmd),
1191 &tx_ant_cmd);
1192 } else {
1193 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1194 return -EOPNOTSUPP;
1195 }
1196 }
1197
1198 /**
1199 * iwl_alive_start - called after REPLY_ALIVE notification received
1200 * from protocol/runtime uCode (initialization uCode's
1201 * Alive gets handled by iwl_init_alive_start()).
1202 */
iwl_alive_start(struct iwl_priv * priv)1203 int iwl_alive_start(struct iwl_priv *priv)
1204 {
1205 int ret = 0;
1206 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1207
1208 /*TODO: this should go to the transport layer */
1209 iwl_reset_ict(trans(priv));
1210
1211 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1212
1213 /* After the ALIVE response, we can send host commands to the uCode */
1214 set_bit(STATUS_ALIVE, &priv->shrd->status);
1215
1216 /* Enable watchdog to monitor the driver tx queues */
1217 iwl_setup_watchdog(priv);
1218
1219 if (iwl_is_rfkill(priv->shrd))
1220 return -ERFKILL;
1221
1222 /* download priority table before any calibration request */
1223 if (cfg(priv)->bt_params &&
1224 cfg(priv)->bt_params->advanced_bt_coexist) {
1225 /* Configure Bluetooth device coexistence support */
1226 if (cfg(priv)->bt_params->bt_sco_disable)
1227 priv->bt_enable_pspoll = false;
1228 else
1229 priv->bt_enable_pspoll = true;
1230
1231 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1232 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1233 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1234 iwlagn_send_advance_bt_config(priv);
1235 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1236 priv->cur_rssi_ctx = NULL;
1237
1238 iwl_send_prio_tbl(trans(priv));
1239
1240 /* FIXME: w/a to force change uCode BT state machine */
1241 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
1242 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1243 if (ret)
1244 return ret;
1245 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
1246 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1247 if (ret)
1248 return ret;
1249 } else {
1250 /*
1251 * default is 2-wire BT coexexistence support
1252 */
1253 iwl_send_bt_config(priv);
1254 }
1255
1256 /*
1257 * Perform runtime calibrations, including DC calibration.
1258 */
1259 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
1260
1261 ieee80211_wake_queues(priv->hw);
1262
1263 priv->active_rate = IWL_RATES_MASK;
1264
1265 /* Configure Tx antenna selection based on H/W config */
1266 iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
1267
1268 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1269 struct iwl_rxon_cmd *active_rxon =
1270 (struct iwl_rxon_cmd *)&ctx->active;
1271 /* apply any changes in staging */
1272 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1273 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1274 } else {
1275 struct iwl_rxon_context *tmp;
1276 /* Initialize our rx_config data */
1277 for_each_context(priv, tmp)
1278 iwl_connection_init_rx_config(priv, tmp);
1279
1280 iwlagn_set_rxon_chain(priv, ctx);
1281 }
1282
1283 if (!priv->shrd->wowlan) {
1284 /* WoWLAN ucode will not reply in the same way, skip it */
1285 iwl_reset_run_time_calib(priv);
1286 }
1287
1288 set_bit(STATUS_READY, &priv->shrd->status);
1289
1290 /* Configure the adapter for unassociated operation */
1291 ret = iwlagn_commit_rxon(priv, ctx);
1292 if (ret)
1293 return ret;
1294
1295 /* At this point, the NIC is initialized and operational */
1296 iwl_rf_kill_ct_config(priv);
1297
1298 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1299
1300 return iwl_power_update_mode(priv, true);
1301 }
1302
1303 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1304
__iwl_down(struct iwl_priv * priv)1305 void __iwl_down(struct iwl_priv *priv)
1306 {
1307 int exit_pending;
1308
1309 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1310
1311 iwl_scan_cancel_timeout(priv, 200);
1312
1313 /*
1314 * If active, scanning won't cancel it, so say it expired.
1315 * No race since we hold the mutex here and a new one
1316 * can't come in at this time.
1317 */
1318 ieee80211_remain_on_channel_expired(priv->hw);
1319
1320 exit_pending =
1321 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1322
1323 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1324 * to prevent rearm timer */
1325 del_timer_sync(&priv->watchdog);
1326
1327 iwl_clear_ucode_stations(priv, NULL);
1328 iwl_dealloc_bcast_stations(priv);
1329 iwl_clear_driver_stations(priv);
1330
1331 /* reset BT coex data */
1332 priv->bt_status = 0;
1333 priv->cur_rssi_ctx = NULL;
1334 priv->bt_is_sco = 0;
1335 if (cfg(priv)->bt_params)
1336 priv->bt_traffic_load =
1337 cfg(priv)->bt_params->bt_init_traffic_load;
1338 else
1339 priv->bt_traffic_load = 0;
1340 priv->bt_full_concurrent = false;
1341 priv->bt_ci_compliance = 0;
1342
1343 /* Wipe out the EXIT_PENDING status bit if we are not actually
1344 * exiting the module */
1345 if (!exit_pending)
1346 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1347
1348 if (priv->mac80211_registered)
1349 ieee80211_stop_queues(priv->hw);
1350
1351 iwl_trans_stop_device(trans(priv));
1352
1353 /* Clear out all status bits but a few that are stable across reset */
1354 priv->shrd->status &=
1355 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1356 STATUS_RF_KILL_HW |
1357 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1358 STATUS_GEO_CONFIGURED |
1359 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1360 STATUS_FW_ERROR |
1361 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1362 STATUS_EXIT_PENDING;
1363
1364 dev_kfree_skb(priv->beacon_skb);
1365 priv->beacon_skb = NULL;
1366 }
1367
iwl_down(struct iwl_priv * priv)1368 void iwl_down(struct iwl_priv *priv)
1369 {
1370 mutex_lock(&priv->shrd->mutex);
1371 __iwl_down(priv);
1372 mutex_unlock(&priv->shrd->mutex);
1373
1374 iwl_cancel_deferred_work(priv);
1375 }
1376
1377 /*****************************************************************************
1378 *
1379 * Workqueue callbacks
1380 *
1381 *****************************************************************************/
1382
iwl_bg_run_time_calib_work(struct work_struct * work)1383 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1384 {
1385 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1386 run_time_calib_work);
1387
1388 mutex_lock(&priv->shrd->mutex);
1389
1390 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1391 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1392 mutex_unlock(&priv->shrd->mutex);
1393 return;
1394 }
1395
1396 if (priv->start_calib) {
1397 iwl_chain_noise_calibration(priv);
1398 iwl_sensitivity_calibration(priv);
1399 }
1400
1401 mutex_unlock(&priv->shrd->mutex);
1402 }
1403
iwlagn_prepare_restart(struct iwl_priv * priv)1404 void iwlagn_prepare_restart(struct iwl_priv *priv)
1405 {
1406 struct iwl_rxon_context *ctx;
1407 bool bt_full_concurrent;
1408 u8 bt_ci_compliance;
1409 u8 bt_load;
1410 u8 bt_status;
1411 bool bt_is_sco;
1412
1413 lockdep_assert_held(&priv->shrd->mutex);
1414
1415 for_each_context(priv, ctx)
1416 ctx->vif = NULL;
1417 priv->is_open = 0;
1418
1419 /*
1420 * __iwl_down() will clear the BT status variables,
1421 * which is correct, but when we restart we really
1422 * want to keep them so restore them afterwards.
1423 *
1424 * The restart process will later pick them up and
1425 * re-configure the hw when we reconfigure the BT
1426 * command.
1427 */
1428 bt_full_concurrent = priv->bt_full_concurrent;
1429 bt_ci_compliance = priv->bt_ci_compliance;
1430 bt_load = priv->bt_traffic_load;
1431 bt_status = priv->bt_status;
1432 bt_is_sco = priv->bt_is_sco;
1433
1434 __iwl_down(priv);
1435
1436 priv->bt_full_concurrent = bt_full_concurrent;
1437 priv->bt_ci_compliance = bt_ci_compliance;
1438 priv->bt_traffic_load = bt_load;
1439 priv->bt_status = bt_status;
1440 priv->bt_is_sco = bt_is_sco;
1441 }
1442
iwl_bg_restart(struct work_struct * data)1443 static void iwl_bg_restart(struct work_struct *data)
1444 {
1445 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1446
1447 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1448 return;
1449
1450 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1451 mutex_lock(&priv->shrd->mutex);
1452 iwlagn_prepare_restart(priv);
1453 mutex_unlock(&priv->shrd->mutex);
1454 iwl_cancel_deferred_work(priv);
1455 ieee80211_restart_hw(priv->hw);
1456 } else {
1457 WARN_ON(1);
1458 }
1459 }
1460
1461
1462
1463
iwlagn_disable_roc(struct iwl_priv * priv)1464 void iwlagn_disable_roc(struct iwl_priv *priv)
1465 {
1466 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1467
1468 lockdep_assert_held(&priv->shrd->mutex);
1469
1470 if (!priv->hw_roc_setup)
1471 return;
1472
1473 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1474 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1475
1476 priv->hw_roc_channel = NULL;
1477
1478 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1479
1480 iwlagn_commit_rxon(priv, ctx);
1481
1482 ctx->is_active = false;
1483 priv->hw_roc_setup = false;
1484 }
1485
iwlagn_disable_roc_work(struct work_struct * work)1486 static void iwlagn_disable_roc_work(struct work_struct *work)
1487 {
1488 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1489 hw_roc_disable_work.work);
1490
1491 mutex_lock(&priv->shrd->mutex);
1492 iwlagn_disable_roc(priv);
1493 mutex_unlock(&priv->shrd->mutex);
1494 }
1495
1496 /*****************************************************************************
1497 *
1498 * driver setup and teardown
1499 *
1500 *****************************************************************************/
1501
iwl_setup_deferred_work(struct iwl_priv * priv)1502 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1503 {
1504 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
1505
1506 init_waitqueue_head(&priv->shrd->wait_command_queue);
1507
1508 INIT_WORK(&priv->restart, iwl_bg_restart);
1509 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1510 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1511 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1512 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1513 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1514 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1515 iwlagn_disable_roc_work);
1516
1517 iwl_setup_scan_deferred_work(priv);
1518
1519 if (cfg(priv)->lib->bt_setup_deferred_work)
1520 cfg(priv)->lib->bt_setup_deferred_work(priv);
1521
1522 init_timer(&priv->statistics_periodic);
1523 priv->statistics_periodic.data = (unsigned long)priv;
1524 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1525
1526 init_timer(&priv->ucode_trace);
1527 priv->ucode_trace.data = (unsigned long)priv;
1528 priv->ucode_trace.function = iwl_bg_ucode_trace;
1529
1530 init_timer(&priv->watchdog);
1531 priv->watchdog.data = (unsigned long)priv;
1532 priv->watchdog.function = iwl_bg_watchdog;
1533 }
1534
iwl_cancel_deferred_work(struct iwl_priv * priv)1535 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
1536 {
1537 if (cfg(priv)->lib->cancel_deferred_work)
1538 cfg(priv)->lib->cancel_deferred_work(priv);
1539
1540 cancel_work_sync(&priv->run_time_calib_work);
1541 cancel_work_sync(&priv->beacon_update);
1542
1543 iwl_cancel_scan_deferred_work(priv);
1544
1545 cancel_work_sync(&priv->bt_full_concurrency);
1546 cancel_work_sync(&priv->bt_runtime_config);
1547 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1548
1549 del_timer_sync(&priv->statistics_periodic);
1550 del_timer_sync(&priv->ucode_trace);
1551 }
1552
iwl_init_hw_rates(struct iwl_priv * priv,struct ieee80211_rate * rates)1553 static void iwl_init_hw_rates(struct iwl_priv *priv,
1554 struct ieee80211_rate *rates)
1555 {
1556 int i;
1557
1558 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1559 rates[i].bitrate = iwl_rates[i].ieee * 5;
1560 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1561 rates[i].hw_value_short = i;
1562 rates[i].flags = 0;
1563 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1564 /*
1565 * If CCK != 1M then set short preamble rate flag.
1566 */
1567 rates[i].flags |=
1568 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1569 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1570 }
1571 }
1572 }
1573
iwl_init_drv(struct iwl_priv * priv)1574 static int iwl_init_drv(struct iwl_priv *priv)
1575 {
1576 int ret;
1577
1578 spin_lock_init(&priv->shrd->sta_lock);
1579
1580 mutex_init(&priv->shrd->mutex);
1581
1582 INIT_LIST_HEAD(&trans(priv)->calib_results);
1583
1584 priv->ieee_channels = NULL;
1585 priv->ieee_rates = NULL;
1586 priv->band = IEEE80211_BAND_2GHZ;
1587
1588 priv->iw_mode = NL80211_IFTYPE_STATION;
1589 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1590 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1591 priv->agg_tids_count = 0;
1592
1593 /* initialize force reset */
1594 priv->force_reset[IWL_RF_RESET].reset_duration =
1595 IWL_DELAY_NEXT_FORCE_RF_RESET;
1596 priv->force_reset[IWL_FW_RESET].reset_duration =
1597 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1598
1599 priv->rx_statistics_jiffies = jiffies;
1600
1601 /* Choose which receivers/antennas to use */
1602 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1603
1604 iwl_init_scan_params(priv);
1605
1606 /* init bt coex */
1607 if (cfg(priv)->bt_params &&
1608 cfg(priv)->bt_params->advanced_bt_coexist) {
1609 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1610 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1611 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1612 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1613 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1614 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1615 }
1616
1617 ret = iwl_init_channel_map(priv);
1618 if (ret) {
1619 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1620 goto err;
1621 }
1622
1623 ret = iwl_init_geos(priv);
1624 if (ret) {
1625 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1626 goto err_free_channel_map;
1627 }
1628 iwl_init_hw_rates(priv, priv->ieee_rates);
1629
1630 return 0;
1631
1632 err_free_channel_map:
1633 iwl_free_channel_map(priv);
1634 err:
1635 return ret;
1636 }
1637
iwl_uninit_drv(struct iwl_priv * priv)1638 static void iwl_uninit_drv(struct iwl_priv *priv)
1639 {
1640 iwl_free_geos(priv);
1641 iwl_free_channel_map(priv);
1642 if (priv->tx_cmd_pool)
1643 kmem_cache_destroy(priv->tx_cmd_pool);
1644 kfree(priv->scan_cmd);
1645 kfree(priv->beacon_cmd);
1646 kfree(rcu_dereference_raw(priv->noa_data));
1647 #ifdef CONFIG_IWLWIFI_DEBUGFS
1648 kfree(priv->wowlan_sram);
1649 #endif
1650 }
1651
1652
1653
iwl_hw_detect(struct iwl_priv * priv)1654 static u32 iwl_hw_detect(struct iwl_priv *priv)
1655 {
1656 return iwl_read32(bus(priv), CSR_HW_REV);
1657 }
1658
1659 /* Size of one Rx buffer in host DRAM */
1660 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1661 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1662
iwl_set_hw_params(struct iwl_priv * priv)1663 static int iwl_set_hw_params(struct iwl_priv *priv)
1664 {
1665 if (iwlagn_mod_params.amsdu_size_8K)
1666 hw_params(priv).rx_page_order =
1667 get_order(IWL_RX_BUF_SIZE_8K);
1668 else
1669 hw_params(priv).rx_page_order =
1670 get_order(IWL_RX_BUF_SIZE_4K);
1671
1672 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1673 cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1674
1675 hw_params(priv).num_ampdu_queues =
1676 cfg(priv)->base_params->num_of_ampdu_queues;
1677 hw_params(priv).shadow_reg_enable =
1678 cfg(priv)->base_params->shadow_reg_enable;
1679 hw_params(priv).sku = cfg(priv)->sku;
1680 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1681
1682 /* Device-specific setup */
1683 return cfg(priv)->lib->set_hw_params(priv);
1684 }
1685
1686
1687
iwl_debug_config(struct iwl_priv * priv)1688 static void iwl_debug_config(struct iwl_priv *priv)
1689 {
1690 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1691 #ifdef CONFIG_IWLWIFI_DEBUG
1692 "enabled\n");
1693 #else
1694 "disabled\n");
1695 #endif
1696 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1697 #ifdef CONFIG_IWLWIFI_DEBUGFS
1698 "enabled\n");
1699 #else
1700 "disabled\n");
1701 #endif
1702 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1703 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1704 "enabled\n");
1705 #else
1706 "disabled\n");
1707 #endif
1708
1709 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1710 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1711 "enabled\n");
1712 #else
1713 "disabled\n");
1714 #endif
1715 dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_P2P "
1716 #ifdef CONFIG_IWLWIFI_P2P
1717 "enabled\n");
1718 #else
1719 "disabled\n");
1720 #endif
1721 }
1722
iwl_probe(struct iwl_bus * bus,const struct iwl_trans_ops * trans_ops,struct iwl_cfg * cfg)1723 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
1724 struct iwl_cfg *cfg)
1725 {
1726 int err = 0;
1727 struct iwl_priv *priv;
1728 struct ieee80211_hw *hw;
1729 u16 num_mac;
1730 u32 hw_rev;
1731
1732 /************************
1733 * 1. Allocating HW data
1734 ************************/
1735 hw = iwl_alloc_all();
1736 if (!hw) {
1737 pr_err("%s: Cannot allocate network device\n", cfg->name);
1738 err = -ENOMEM;
1739 goto out;
1740 }
1741
1742 priv = hw->priv;
1743 priv->shrd = &priv->_shrd;
1744 bus->shrd = priv->shrd;
1745 priv->shrd->bus = bus;
1746 priv->shrd->priv = priv;
1747
1748 priv->shrd->trans = trans_ops->alloc(priv->shrd);
1749 if (priv->shrd->trans == NULL) {
1750 err = -ENOMEM;
1751 goto out_free_traffic_mem;
1752 }
1753
1754 /* At this point both hw and priv are allocated. */
1755
1756 SET_IEEE80211_DEV(hw, bus(priv)->dev);
1757
1758 /* what debugging capabilities we have */
1759 iwl_debug_config(priv);
1760
1761 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1762 cfg(priv) = cfg;
1763
1764 /* is antenna coupling more than 35dB ? */
1765 priv->bt_ant_couple_ok =
1766 (iwlagn_mod_params.ant_coupling >
1767 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1768 true : false;
1769
1770 /* enable/disable bt channel inhibition */
1771 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1772 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1773 (priv->bt_ch_announce) ? "On" : "Off");
1774
1775 if (iwl_alloc_traffic_mem(priv))
1776 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1777
1778 /* these spin locks will be used in apm_ops.init and EEPROM access
1779 * we should init now
1780 */
1781 spin_lock_init(&bus(priv)->reg_lock);
1782 spin_lock_init(&priv->shrd->lock);
1783
1784 /*
1785 * stop and reset the on-board processor just in case it is in a
1786 * strange state ... like being left stranded by a primary kernel
1787 * and this is now the kdump kernel trying to start up
1788 */
1789 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1790
1791 /***********************
1792 * 3. Read REV register
1793 ***********************/
1794 hw_rev = iwl_hw_detect(priv);
1795 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1796 cfg(priv)->name, hw_rev);
1797
1798 err = iwl_trans_request_irq(trans(priv));
1799 if (err)
1800 goto out_free_trans;
1801
1802 if (iwl_trans_prepare_card_hw(trans(priv))) {
1803 err = -EIO;
1804 IWL_WARN(priv, "Failed, HW not ready\n");
1805 goto out_free_trans;
1806 }
1807
1808 /*****************
1809 * 4. Read EEPROM
1810 *****************/
1811 /* Read the EEPROM */
1812 err = iwl_eeprom_init(priv, hw_rev);
1813 if (err) {
1814 IWL_ERR(priv, "Unable to init EEPROM\n");
1815 goto out_free_trans;
1816 }
1817 err = iwl_eeprom_check_version(priv);
1818 if (err)
1819 goto out_free_eeprom;
1820
1821 err = iwl_eeprom_check_sku(priv);
1822 if (err)
1823 goto out_free_eeprom;
1824
1825 /* extract MAC Address */
1826 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1827 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1828 priv->hw->wiphy->addresses = priv->addresses;
1829 priv->hw->wiphy->n_addresses = 1;
1830 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1831 if (num_mac > 1) {
1832 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1833 ETH_ALEN);
1834 priv->addresses[1].addr[5]++;
1835 priv->hw->wiphy->n_addresses++;
1836 }
1837
1838 /************************
1839 * 5. Setup HW constants
1840 ************************/
1841 if (iwl_set_hw_params(priv)) {
1842 err = -ENOENT;
1843 IWL_ERR(priv, "failed to set hw parameters\n");
1844 goto out_free_eeprom;
1845 }
1846
1847 /*******************
1848 * 6. Setup priv
1849 *******************/
1850
1851 err = iwl_init_drv(priv);
1852 if (err)
1853 goto out_free_eeprom;
1854 /* At this point both hw and priv are initialized. */
1855
1856 /********************
1857 * 7. Setup services
1858 ********************/
1859 iwl_setup_deferred_work(priv);
1860 iwl_setup_rx_handlers(priv);
1861 iwl_testmode_init(priv);
1862
1863 /*********************************************
1864 * 8. Enable interrupts
1865 *********************************************/
1866
1867 iwl_enable_rfkill_int(priv);
1868
1869 /* If platform's RF_KILL switch is NOT set to KILL */
1870 if (iwl_read32(bus(priv),
1871 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1872 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1873 else
1874 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1875
1876 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
1877 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
1878
1879 iwl_power_initialize(priv);
1880 iwl_tt_initialize(priv);
1881
1882 init_completion(&priv->firmware_loading_complete);
1883
1884 err = iwl_request_firmware(priv, true);
1885 if (err)
1886 goto out_destroy_workqueue;
1887
1888 return 0;
1889
1890 out_destroy_workqueue:
1891 destroy_workqueue(priv->shrd->workqueue);
1892 priv->shrd->workqueue = NULL;
1893 iwl_uninit_drv(priv);
1894 out_free_eeprom:
1895 iwl_eeprom_free(priv->shrd);
1896 out_free_trans:
1897 iwl_trans_free(trans(priv));
1898 out_free_traffic_mem:
1899 iwl_free_traffic_mem(priv);
1900 ieee80211_free_hw(priv->hw);
1901 out:
1902 return err;
1903 }
1904
iwl_remove(struct iwl_priv * priv)1905 void __devexit iwl_remove(struct iwl_priv * priv)
1906 {
1907 wait_for_completion(&priv->firmware_loading_complete);
1908
1909 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1910
1911 iwl_dbgfs_unregister(priv);
1912
1913 /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1914 * to be called and iwl_down since we are removing the device
1915 * we need to set STATUS_EXIT_PENDING bit.
1916 */
1917 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1918
1919 iwl_testmode_cleanup(priv);
1920 iwlagn_mac_unregister(priv);
1921
1922 iwl_tt_exit(priv);
1923
1924 /*This will stop the queues, move the device to low power state */
1925 iwl_trans_stop_device(trans(priv));
1926
1927 iwl_dealloc_ucode(trans(priv));
1928
1929 iwl_eeprom_free(priv->shrd);
1930
1931 /*netif_stop_queue(dev); */
1932 flush_workqueue(priv->shrd->workqueue);
1933
1934 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1935 * priv->shrd->workqueue... so we can't take down the workqueue
1936 * until now... */
1937 destroy_workqueue(priv->shrd->workqueue);
1938 priv->shrd->workqueue = NULL;
1939 iwl_free_traffic_mem(priv);
1940
1941 iwl_trans_free(trans(priv));
1942
1943 iwl_uninit_drv(priv);
1944
1945 dev_kfree_skb(priv->beacon_skb);
1946
1947 ieee80211_free_hw(priv->hw);
1948 }
1949
1950
1951 /*****************************************************************************
1952 *
1953 * driver and module entry point
1954 *
1955 *****************************************************************************/
iwl_init(void)1956 static int __init iwl_init(void)
1957 {
1958
1959 int ret;
1960 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1961 pr_info(DRV_COPYRIGHT "\n");
1962
1963 ret = iwlagn_rate_control_register();
1964 if (ret) {
1965 pr_err("Unable to register rate control algorithm: %d\n", ret);
1966 return ret;
1967 }
1968
1969 ret = iwl_pci_register_driver();
1970
1971 if (ret)
1972 goto error_register;
1973 return ret;
1974
1975 error_register:
1976 iwlagn_rate_control_unregister();
1977 return ret;
1978 }
1979
iwl_exit(void)1980 static void __exit iwl_exit(void)
1981 {
1982 iwl_pci_unregister_driver();
1983 iwlagn_rate_control_unregister();
1984 }
1985
1986 module_exit(iwl_exit);
1987 module_init(iwl_init);
1988
1989 #ifdef CONFIG_IWLWIFI_DEBUG
1990 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1991 S_IRUGO | S_IWUSR);
1992 MODULE_PARM_DESC(debug, "debug output mask");
1993 #endif
1994
1995 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1996 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1997 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1998 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1999 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2000 MODULE_PARM_DESC(11n_disable,
2001 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
2002 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2003 int, S_IRUGO);
2004 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2005 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2006 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2007
2008 module_param_named(ucode_alternative,
2009 iwlagn_mod_params.wanted_ucode_alternative,
2010 int, S_IRUGO);
2011 MODULE_PARM_DESC(ucode_alternative,
2012 "specify ucode alternative to use from ucode file");
2013
2014 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2015 int, S_IRUGO);
2016 MODULE_PARM_DESC(antenna_coupling,
2017 "specify antenna coupling in dB (defualt: 0 dB)");
2018
2019 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2020 bool, S_IRUGO);
2021 MODULE_PARM_DESC(bt_ch_inhibition,
2022 "Enable BT channel inhibition (default: enable)");
2023
2024 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2025 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2026
2027 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2028 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2029
2030 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2031 MODULE_PARM_DESC(wd_disable,
2032 "Disable stuck queue watchdog timer 0=system default, "
2033 "1=disable, 2=enable (default: 0)");
2034
2035 /*
2036 * set bt_coex_active to true, uCode will do kill/defer
2037 * every time the priority line is asserted (BT is sending signals on the
2038 * priority line in the PCIx).
2039 * set bt_coex_active to false, uCode will ignore the BT activity and
2040 * perform the normal operation
2041 *
2042 * User might experience transmit issue on some platform due to WiFi/BT
2043 * co-exist problem. The possible behaviors are:
2044 * Able to scan and finding all the available AP
2045 * Not able to associate with any AP
2046 * On those platforms, WiFi communication can be restored by set
2047 * "bt_coex_active" module parameter to "false"
2048 *
2049 * default: bt_coex_active = true (BT_COEX_ENABLE)
2050 */
2051 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2052 bool, S_IRUGO);
2053 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2054
2055 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2056 MODULE_PARM_DESC(led_mode, "0=system default, "
2057 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
2058
2059 module_param_named(power_save, iwlagn_mod_params.power_save,
2060 bool, S_IRUGO);
2061 MODULE_PARM_DESC(power_save,
2062 "enable WiFi power management (default: disable)");
2063
2064 module_param_named(power_level, iwlagn_mod_params.power_level,
2065 int, S_IRUGO);
2066 MODULE_PARM_DESC(power_level,
2067 "default power save level (range from 1 - 5, default: 1)");
2068
2069 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2070 bool, S_IRUGO);
2071 MODULE_PARM_DESC(auto_agg,
2072 "enable agg w/o check traffic load (default: enable)");
2073
2074 /*
2075 * For now, keep using power level 1 instead of automatically
2076 * adjusting ...
2077 */
2078 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2079 bool, S_IRUGO);
2080 MODULE_PARM_DESC(no_sleep_autoadjust,
2081 "don't automatically adjust sleep level "
2082 "according to maximum network latency (default: true)");
2083