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fix a kmap leak in virtio_console
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / dvm / main.c
blobba1b1ea54252c8d1ce9018263c42ef88fca9d50f
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom-read.h"
48 #include "iwl-eeprom-parse.h"
49 #include "iwl-io.h"
50 #include "iwl-trans.h"
51 #include "iwl-op-mode.h"
52 #include "iwl-drv.h"
53 #include "iwl-modparams.h"
54 #include "iwl-prph.h"
55
56 #include "dev.h"
57 #include "calib.h"
58 #include "agn.h"
59
60
61 /******************************************************************************
62 *
63 * module boiler plate
64 *
65 ******************************************************************************/
66
67 /*
68 * module name, copyright, version, etc.
69 */
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #define DRV_VERSION IWLWIFI_VERSION VD
79
80
81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
82 MODULE_VERSION(DRV_VERSION);
83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
84 MODULE_LICENSE("GPL");
85
86 static const struct iwl_op_mode_ops iwl_dvm_ops;
87
88 void iwl_update_chain_flags(struct iwl_priv *priv)
89 {
90 struct iwl_rxon_context *ctx;
91
92 for_each_context(priv, ctx) {
93 iwlagn_set_rxon_chain(priv, ctx);
94 if (ctx->active.rx_chain != ctx->staging.rx_chain)
95 iwlagn_commit_rxon(priv, ctx);
96 }
97 }
98
99 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
100 static void iwl_set_beacon_tim(struct iwl_priv *priv,
101 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
102 u8 *beacon, u32 frame_size)
103 {
104 u16 tim_idx;
105 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
106
107 /*
108 * The index is relative to frame start but we start looking at the
109 * variable-length part of the beacon.
110 */
111 tim_idx = mgmt->u.beacon.variable - beacon;
112
113 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
114 while ((tim_idx < (frame_size - 2)) &&
115 (beacon[tim_idx] != WLAN_EID_TIM))
116 tim_idx += beacon[tim_idx+1] + 2;
117
118 /* If TIM field was found, set variables */
119 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
120 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
121 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
122 } else
123 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
124 }
125
126 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
127 {
128 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
129 struct iwl_host_cmd cmd = {
130 .id = REPLY_TX_BEACON,
131 .flags = CMD_SYNC,
132 };
133 struct ieee80211_tx_info *info;
134 u32 frame_size;
135 u32 rate_flags;
136 u32 rate;
137
138 /*
139 * We have to set up the TX command, the TX Beacon command, and the
140 * beacon contents.
141 */
142
143 lockdep_assert_held(&priv->mutex);
144
145 if (!priv->beacon_ctx) {
146 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
147 return 0;
148 }
149
150 if (WARN_ON(!priv->beacon_skb))
151 return -EINVAL;
152
153 /* Allocate beacon command */
154 if (!priv->beacon_cmd)
155 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
156 tx_beacon_cmd = priv->beacon_cmd;
157 if (!tx_beacon_cmd)
158 return -ENOMEM;
159
160 frame_size = priv->beacon_skb->len;
161
162 /* Set up TX command fields */
163 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
164 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
165 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
166 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
167 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
168
169 /* Set up TX beacon command fields */
170 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
171 frame_size);
172
173 /* Set up packet rate and flags */
174 info = IEEE80211_SKB_CB(priv->beacon_skb);
175
176 /*
177 * Let's set up the rate at least somewhat correctly;
178 * it will currently not actually be used by the uCode,
179 * it uses the broadcast station's rate instead.
180 */
181 if (info->control.rates[0].idx < 0 ||
182 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
183 rate = 0;
184 else
185 rate = info->control.rates[0].idx;
186
187 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
188 priv->nvm_data->valid_tx_ant);
189 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
190
191 /* In mac80211, rates for 5 GHz start at 0 */
192 if (info->band == IEEE80211_BAND_5GHZ)
193 rate += IWL_FIRST_OFDM_RATE;
194 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
195 rate_flags |= RATE_MCS_CCK_MSK;
196
197 tx_beacon_cmd->tx.rate_n_flags =
198 iwl_hw_set_rate_n_flags(rate, rate_flags);
199
200 /* Submit command */
201 cmd.len[0] = sizeof(*tx_beacon_cmd);
202 cmd.data[0] = tx_beacon_cmd;
203 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
204 cmd.len[1] = frame_size;
205 cmd.data[1] = priv->beacon_skb->data;
206 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
207
208 return iwl_dvm_send_cmd(priv, &cmd);
209 }
210
211 static void iwl_bg_beacon_update(struct work_struct *work)
212 {
213 struct iwl_priv *priv =
214 container_of(work, struct iwl_priv, beacon_update);
215 struct sk_buff *beacon;
216
217 mutex_lock(&priv->mutex);
218 if (!priv->beacon_ctx) {
219 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
220 goto out;
221 }
222
223 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
224 /*
225 * The ucode will send beacon notifications even in
226 * IBSS mode, but we don't want to process them. But
227 * we need to defer the type check to here due to
228 * requiring locking around the beacon_ctx access.
229 */
230 goto out;
231 }
232
233 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
234 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
235 if (!beacon) {
236 IWL_ERR(priv, "update beacon failed -- keeping old\n");
237 goto out;
238 }
239
240 /* new beacon skb is allocated every time; dispose previous.*/
241 dev_kfree_skb(priv->beacon_skb);
242
243 priv->beacon_skb = beacon;
244
245 iwlagn_send_beacon_cmd(priv);
246 out:
247 mutex_unlock(&priv->mutex);
248 }
249
250 static void iwl_bg_bt_runtime_config(struct work_struct *work)
251 {
252 struct iwl_priv *priv =
253 container_of(work, struct iwl_priv, bt_runtime_config);
254
255 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
256 return;
257
258 /* dont send host command if rf-kill is on */
259 if (!iwl_is_ready_rf(priv))
260 return;
261 iwlagn_send_advance_bt_config(priv);
262 }
263
264 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
265 {
266 struct iwl_priv *priv =
267 container_of(work, struct iwl_priv, bt_full_concurrency);
268 struct iwl_rxon_context *ctx;
269
270 mutex_lock(&priv->mutex);
271
272 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
273 goto out;
274
275 /* dont send host command if rf-kill is on */
276 if (!iwl_is_ready_rf(priv))
277 goto out;
278
279 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
280 priv->bt_full_concurrent ?
281 "full concurrency" : "3-wire");
282
283 /*
284 * LQ & RXON updated cmds must be sent before BT Config cmd
285 * to avoid 3-wire collisions
286 */
287 for_each_context(priv, ctx) {
288 iwlagn_set_rxon_chain(priv, ctx);
289 iwlagn_commit_rxon(priv, ctx);
290 }
291
292 iwlagn_send_advance_bt_config(priv);
293 out:
294 mutex_unlock(&priv->mutex);
295 }
296
297 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
298 {
299 struct iwl_statistics_cmd statistics_cmd = {
300 .configuration_flags =
301 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
302 };
303
304 if (flags & CMD_ASYNC)
305 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
306 CMD_ASYNC,
307 sizeof(struct iwl_statistics_cmd),
308 &statistics_cmd);
309 else
310 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
311 CMD_SYNC,
312 sizeof(struct iwl_statistics_cmd),
313 &statistics_cmd);
314 }
315
316 /**
317 * iwl_bg_statistics_periodic - Timer callback to queue statistics
318 *
319 * This callback is provided in order to send a statistics request.
320 *
321 * This timer function is continually reset to execute within
322 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
323 * was received. We need to ensure we receive the statistics in order
324 * to update the temperature used for calibrating the TXPOWER.
325 */
326 static void iwl_bg_statistics_periodic(unsigned long data)
327 {
328 struct iwl_priv *priv = (struct iwl_priv *)data;
329
330 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
331 return;
332
333 /* dont send host command if rf-kill is on */
334 if (!iwl_is_ready_rf(priv))
335 return;
336
337 iwl_send_statistics_request(priv, CMD_ASYNC, false);
338 }
339
340
341 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
342 u32 start_idx, u32 num_events,
343 u32 capacity, u32 mode)
344 {
345 u32 i;
346 u32 ptr; /* SRAM byte address of log data */
347 u32 ev, time, data; /* event log data */
348 unsigned long reg_flags;
349
350 if (mode == 0)
351 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
352 else
353 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
354
355 /* Make sure device is powered up for SRAM reads */
356 if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
357 return;
358
359 /* Set starting address; reads will auto-increment */
360 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
361
362 /*
363 * Refuse to read more than would have fit into the log from
364 * the current start_idx. This used to happen due to the race
365 * described below, but now WARN because the code below should
366 * prevent it from happening here.
367 */
368 if (WARN_ON(num_events > capacity - start_idx))
369 num_events = capacity - start_idx;
370
371 /*
372 * "time" is actually "data" for mode 0 (no timestamp).
373 * place event id # at far right for easier visual parsing.
374 */
375 for (i = 0; i < num_events; i++) {
376 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
377 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
378 if (mode == 0) {
379 trace_iwlwifi_dev_ucode_cont_event(
380 priv->trans->dev, 0, time, ev);
381 } else {
382 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
383 trace_iwlwifi_dev_ucode_cont_event(
384 priv->trans->dev, time, data, ev);
385 }
386 }
387 /* Allow device to power down */
388 iwl_trans_release_nic_access(priv->trans, &reg_flags);
389 }
390
391 static void iwl_continuous_event_trace(struct iwl_priv *priv)
392 {
393 u32 capacity; /* event log capacity in # entries */
394 struct {
395 u32 capacity;
396 u32 mode;
397 u32 wrap_counter;
398 u32 write_counter;
399 } __packed read;
400 u32 base; /* SRAM byte address of event log header */
401 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
402 u32 num_wraps; /* # times uCode wrapped to top of log */
403 u32 next_entry; /* index of next entry to be written by uCode */
404
405 base = priv->device_pointers.log_event_table;
406 if (iwlagn_hw_valid_rtc_data_addr(base)) {
407 iwl_trans_read_mem_bytes(priv->trans, base,
408 &read, sizeof(read));
409 capacity = read.capacity;
410 mode = read.mode;
411 num_wraps = read.wrap_counter;
412 next_entry = read.write_counter;
413 } else
414 return;
415
416 /*
417 * Unfortunately, the uCode doesn't use temporary variables.
418 * Therefore, it can happen that we read next_entry == capacity,
419 * which really means next_entry == 0.
420 */
421 if (unlikely(next_entry == capacity))
422 next_entry = 0;
423 /*
424 * Additionally, the uCode increases the write pointer before
425 * the wraps counter, so if the write pointer is smaller than
426 * the old write pointer (wrap occurred) but we read that no
427 * wrap occurred, we actually read between the next_entry and
428 * num_wraps update (this does happen in practice!!) -- take
429 * that into account by increasing num_wraps.
430 */
431 if (unlikely(next_entry < priv->event_log.next_entry &&
432 num_wraps == priv->event_log.num_wraps))
433 num_wraps++;
434
435 if (num_wraps == priv->event_log.num_wraps) {
436 iwl_print_cont_event_trace(
437 priv, base, priv->event_log.next_entry,
438 next_entry - priv->event_log.next_entry,
439 capacity, mode);
440
441 priv->event_log.non_wraps_count++;
442 } else {
443 if (num_wraps - priv->event_log.num_wraps > 1)
444 priv->event_log.wraps_more_count++;
445 else
446 priv->event_log.wraps_once_count++;
447
448 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
449 num_wraps - priv->event_log.num_wraps,
450 next_entry, priv->event_log.next_entry);
451
452 if (next_entry < priv->event_log.next_entry) {
453 iwl_print_cont_event_trace(
454 priv, base, priv->event_log.next_entry,
455 capacity - priv->event_log.next_entry,
456 capacity, mode);
457
458 iwl_print_cont_event_trace(
459 priv, base, 0, next_entry, capacity, mode);
460 } else {
461 iwl_print_cont_event_trace(
462 priv, base, next_entry,
463 capacity - next_entry,
464 capacity, mode);
465
466 iwl_print_cont_event_trace(
467 priv, base, 0, next_entry, capacity, mode);
468 }
469 }
470
471 priv->event_log.num_wraps = num_wraps;
472 priv->event_log.next_entry = next_entry;
473 }
474
475 /**
476 * iwl_bg_ucode_trace - Timer callback to log ucode event
477 *
478 * The timer is continually set to execute every
479 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
480 * this function is to perform continuous uCode event logging operation
481 * if enabled
482 */
483 static void iwl_bg_ucode_trace(unsigned long data)
484 {
485 struct iwl_priv *priv = (struct iwl_priv *)data;
486
487 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
488 return;
489
490 if (priv->event_log.ucode_trace) {
491 iwl_continuous_event_trace(priv);
492 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
493 mod_timer(&priv->ucode_trace,
494 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
495 }
496 }
497
498 static void iwl_bg_tx_flush(struct work_struct *work)
499 {
500 struct iwl_priv *priv =
501 container_of(work, struct iwl_priv, tx_flush);
502
503 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
504 return;
505
506 /* do nothing if rf-kill is on */
507 if (!iwl_is_ready_rf(priv))
508 return;
509
510 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
511 iwlagn_dev_txfifo_flush(priv);
512 }
513
514 /*
515 * queue/FIFO/AC mapping definitions
516 */
517
518 static const u8 iwlagn_bss_ac_to_fifo[] = {
519 IWL_TX_FIFO_VO,
520 IWL_TX_FIFO_VI,
521 IWL_TX_FIFO_BE,
522 IWL_TX_FIFO_BK,
523 };
524
525 static const u8 iwlagn_bss_ac_to_queue[] = {
526 0, 1, 2, 3,
527 };
528
529 static const u8 iwlagn_pan_ac_to_fifo[] = {
530 IWL_TX_FIFO_VO_IPAN,
531 IWL_TX_FIFO_VI_IPAN,
532 IWL_TX_FIFO_BE_IPAN,
533 IWL_TX_FIFO_BK_IPAN,
534 };
535
536 static const u8 iwlagn_pan_ac_to_queue[] = {
537 7, 6, 5, 4,
538 };
539
540 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
541 {
542 int i;
543
544 /*
545 * The default context is always valid,
546 * the PAN context depends on uCode.
547 */
548 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
549 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
550 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
551
552 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
553 priv->contexts[i].ctxid = i;
554
555 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
556 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
557 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
558 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
559 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
560 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
561 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
562 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
563 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
564 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
565 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
566 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
567 BIT(NL80211_IFTYPE_STATION);
568 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
569 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
570 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
571 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
572 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
573 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
574 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
575 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
576
577 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
578 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
579 REPLY_WIPAN_RXON_TIMING;
580 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
581 REPLY_WIPAN_RXON_ASSOC;
582 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
583 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
584 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
585 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
586 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
587 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
588 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
589
590 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
591 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
592 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
593 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
594 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
595 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
596 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
597 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
598
599 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
600 }
601
602 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
603 {
604 struct iwl_ct_kill_config cmd;
605 struct iwl_ct_kill_throttling_config adv_cmd;
606 int ret = 0;
607
608 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
609 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
610
611 priv->thermal_throttle.ct_kill_toggle = false;
612
613 if (priv->lib->support_ct_kill_exit) {
614 adv_cmd.critical_temperature_enter =
615 cpu_to_le32(priv->hw_params.ct_kill_threshold);
616 adv_cmd.critical_temperature_exit =
617 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
618
619 ret = iwl_dvm_send_cmd_pdu(priv,
620 REPLY_CT_KILL_CONFIG_CMD,
621 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
622 if (ret)
623 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
624 else
625 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
626 "succeeded, critical temperature enter is %d,"
627 "exit is %d\n",
628 priv->hw_params.ct_kill_threshold,
629 priv->hw_params.ct_kill_exit_threshold);
630 } else {
631 cmd.critical_temperature_R =
632 cpu_to_le32(priv->hw_params.ct_kill_threshold);
633
634 ret = iwl_dvm_send_cmd_pdu(priv,
635 REPLY_CT_KILL_CONFIG_CMD,
636 CMD_SYNC, sizeof(cmd), &cmd);
637 if (ret)
638 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
639 else
640 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
641 "succeeded, "
642 "critical temperature is %d\n",
643 priv->hw_params.ct_kill_threshold);
644 }
645 }
646
647 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
648 {
649 struct iwl_calib_cfg_cmd calib_cfg_cmd;
650 struct iwl_host_cmd cmd = {
651 .id = CALIBRATION_CFG_CMD,
652 .len = { sizeof(struct iwl_calib_cfg_cmd), },
653 .data = { &calib_cfg_cmd, },
654 };
655
656 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
657 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
658 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
659
660 return iwl_dvm_send_cmd(priv, &cmd);
661 }
662
663
664 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
665 {
666 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
667 .valid = cpu_to_le32(valid_tx_ant),
668 };
669
670 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
671 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
672 return iwl_dvm_send_cmd_pdu(priv,
673 TX_ANT_CONFIGURATION_CMD,
674 CMD_SYNC,
675 sizeof(struct iwl_tx_ant_config_cmd),
676 &tx_ant_cmd);
677 } else {
678 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
679 return -EOPNOTSUPP;
680 }
681 }
682
683 static void iwl_send_bt_config(struct iwl_priv *priv)
684 {
685 struct iwl_bt_cmd bt_cmd = {
686 .lead_time = BT_LEAD_TIME_DEF,
687 .max_kill = BT_MAX_KILL_DEF,
688 .kill_ack_mask = 0,
689 .kill_cts_mask = 0,
690 };
691
692 if (!iwlwifi_mod_params.bt_coex_active)
693 bt_cmd.flags = BT_COEX_DISABLE;
694 else
695 bt_cmd.flags = BT_COEX_ENABLE;
696
697 priv->bt_enable_flag = bt_cmd.flags;
698 IWL_DEBUG_INFO(priv, "BT coex %s\n",
699 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
700
701 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
702 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
703 IWL_ERR(priv, "failed to send BT Coex Config\n");
704 }
705
706 /**
707 * iwl_alive_start - called after REPLY_ALIVE notification received
708 * from protocol/runtime uCode (initialization uCode's
709 * Alive gets handled by iwl_init_alive_start()).
710 */
711 int iwl_alive_start(struct iwl_priv *priv)
712 {
713 int ret = 0;
714 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
715
716 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
717
718 /* After the ALIVE response, we can send host commands to the uCode */
719 set_bit(STATUS_ALIVE, &priv->status);
720
721 if (iwl_is_rfkill(priv))
722 return -ERFKILL;
723
724 if (priv->event_log.ucode_trace) {
725 /* start collecting data now */
726 mod_timer(&priv->ucode_trace, jiffies);
727 }
728
729 /* download priority table before any calibration request */
730 if (priv->lib->bt_params &&
731 priv->lib->bt_params->advanced_bt_coexist) {
732 /* Configure Bluetooth device coexistence support */
733 if (priv->lib->bt_params->bt_sco_disable)
734 priv->bt_enable_pspoll = false;
735 else
736 priv->bt_enable_pspoll = true;
737
738 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
739 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
740 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
741 iwlagn_send_advance_bt_config(priv);
742 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
743 priv->cur_rssi_ctx = NULL;
744
745 iwl_send_prio_tbl(priv);
746
747 /* FIXME: w/a to force change uCode BT state machine */
748 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
749 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
750 if (ret)
751 return ret;
752 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
753 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
754 if (ret)
755 return ret;
756 } else if (priv->lib->bt_params) {
757 /*
758 * default is 2-wire BT coexexistence support
759 */
760 iwl_send_bt_config(priv);
761 }
762
763 /*
764 * Perform runtime calibrations, including DC calibration.
765 */
766 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
767
768 ieee80211_wake_queues(priv->hw);
769
770 /* Configure Tx antenna selection based on H/W config */
771 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
772
773 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
774 struct iwl_rxon_cmd *active_rxon =
775 (struct iwl_rxon_cmd *)&ctx->active;
776 /* apply any changes in staging */
777 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
778 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
779 } else {
780 struct iwl_rxon_context *tmp;
781 /* Initialize our rx_config data */
782 for_each_context(priv, tmp)
783 iwl_connection_init_rx_config(priv, tmp);
784
785 iwlagn_set_rxon_chain(priv, ctx);
786 }
787
788 if (!priv->wowlan) {
789 /* WoWLAN ucode will not reply in the same way, skip it */
790 iwl_reset_run_time_calib(priv);
791 }
792
793 set_bit(STATUS_READY, &priv->status);
794
795 /* Configure the adapter for unassociated operation */
796 ret = iwlagn_commit_rxon(priv, ctx);
797 if (ret)
798 return ret;
799
800 /* At this point, the NIC is initialized and operational */
801 iwl_rf_kill_ct_config(priv);
802
803 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
804
805 return iwl_power_update_mode(priv, true);
806 }
807
808 /**
809 * iwl_clear_driver_stations - clear knowledge of all stations from driver
810 * @priv: iwl priv struct
811 *
812 * This is called during iwl_down() to make sure that in the case
813 * we're coming there from a hardware restart mac80211 will be
814 * able to reconfigure stations -- if we're getting there in the
815 * normal down flow then the stations will already be cleared.
816 */
817 static void iwl_clear_driver_stations(struct iwl_priv *priv)
818 {
819 struct iwl_rxon_context *ctx;
820
821 spin_lock_bh(&priv->sta_lock);
822 memset(priv->stations, 0, sizeof(priv->stations));
823 priv->num_stations = 0;
824
825 priv->ucode_key_table = 0;
826
827 for_each_context(priv, ctx) {
828 /*
829 * Remove all key information that is not stored as part
830 * of station information since mac80211 may not have had
831 * a chance to remove all the keys. When device is
832 * reconfigured by mac80211 after an error all keys will
833 * be reconfigured.
834 */
835 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
836 ctx->key_mapping_keys = 0;
837 }
838
839 spin_unlock_bh(&priv->sta_lock);
840 }
841
842 void iwl_down(struct iwl_priv *priv)
843 {
844 int exit_pending;
845
846 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
847
848 lockdep_assert_held(&priv->mutex);
849
850 iwl_scan_cancel_timeout(priv, 200);
851
852 exit_pending =
853 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
854
855 iwl_clear_ucode_stations(priv, NULL);
856 iwl_dealloc_bcast_stations(priv);
857 iwl_clear_driver_stations(priv);
858
859 /* reset BT coex data */
860 priv->bt_status = 0;
861 priv->cur_rssi_ctx = NULL;
862 priv->bt_is_sco = 0;
863 if (priv->lib->bt_params)
864 priv->bt_traffic_load =
865 priv->lib->bt_params->bt_init_traffic_load;
866 else
867 priv->bt_traffic_load = 0;
868 priv->bt_full_concurrent = false;
869 priv->bt_ci_compliance = 0;
870
871 /* Wipe out the EXIT_PENDING status bit if we are not actually
872 * exiting the module */
873 if (!exit_pending)
874 clear_bit(STATUS_EXIT_PENDING, &priv->status);
875
876 if (priv->mac80211_registered)
877 ieee80211_stop_queues(priv->hw);
878
879 priv->ucode_loaded = false;
880 iwl_trans_stop_device(priv->trans);
881
882 /* Set num_aux_in_flight must be done after the transport is stopped */
883 atomic_set(&priv->num_aux_in_flight, 0);
884
885 /* Clear out all status bits but a few that are stable across reset */
886 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
887 STATUS_RF_KILL_HW |
888 test_bit(STATUS_FW_ERROR, &priv->status) <<
889 STATUS_FW_ERROR |
890 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
891 STATUS_EXIT_PENDING;
892
893 dev_kfree_skb(priv->beacon_skb);
894 priv->beacon_skb = NULL;
895 }
896
897 /*****************************************************************************
898 *
899 * Workqueue callbacks
900 *
901 *****************************************************************************/
902
903 static void iwl_bg_run_time_calib_work(struct work_struct *work)
904 {
905 struct iwl_priv *priv = container_of(work, struct iwl_priv,
906 run_time_calib_work);
907
908 mutex_lock(&priv->mutex);
909
910 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
911 test_bit(STATUS_SCANNING, &priv->status)) {
912 mutex_unlock(&priv->mutex);
913 return;
914 }
915
916 if (priv->start_calib) {
917 iwl_chain_noise_calibration(priv);
918 iwl_sensitivity_calibration(priv);
919 }
920
921 mutex_unlock(&priv->mutex);
922 }
923
924 void iwlagn_prepare_restart(struct iwl_priv *priv)
925 {
926 bool bt_full_concurrent;
927 u8 bt_ci_compliance;
928 u8 bt_load;
929 u8 bt_status;
930 bool bt_is_sco;
931 int i;
932
933 lockdep_assert_held(&priv->mutex);
934
935 priv->is_open = 0;
936
937 /*
938 * __iwl_down() will clear the BT status variables,
939 * which is correct, but when we restart we really
940 * want to keep them so restore them afterwards.
941 *
942 * The restart process will later pick them up and
943 * re-configure the hw when we reconfigure the BT
944 * command.
945 */
946 bt_full_concurrent = priv->bt_full_concurrent;
947 bt_ci_compliance = priv->bt_ci_compliance;
948 bt_load = priv->bt_traffic_load;
949 bt_status = priv->bt_status;
950 bt_is_sco = priv->bt_is_sco;
951
952 iwl_down(priv);
953
954 priv->bt_full_concurrent = bt_full_concurrent;
955 priv->bt_ci_compliance = bt_ci_compliance;
956 priv->bt_traffic_load = bt_load;
957 priv->bt_status = bt_status;
958 priv->bt_is_sco = bt_is_sco;
959
960 /* reset aggregation queues */
961 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
962 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
963 /* and stop counts */
964 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
965 atomic_set(&priv->queue_stop_count[i], 0);
966
967 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
968 }
969
970 static void iwl_bg_restart(struct work_struct *data)
971 {
972 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
973
974 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
975 return;
976
977 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
978 mutex_lock(&priv->mutex);
979 iwlagn_prepare_restart(priv);
980 mutex_unlock(&priv->mutex);
981 iwl_cancel_deferred_work(priv);
982 if (priv->mac80211_registered)
983 ieee80211_restart_hw(priv->hw);
984 else
985 IWL_ERR(priv,
986 "Cannot request restart before registrating with mac80211");
987 } else {
988 WARN_ON(1);
989 }
990 }
991
992 /*****************************************************************************
993 *
994 * driver setup and teardown
995 *
996 *****************************************************************************/
997
998 static void iwl_setup_deferred_work(struct iwl_priv *priv)
999 {
1000 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1001
1002 INIT_WORK(&priv->restart, iwl_bg_restart);
1003 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1004 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1005 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1006 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1007 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1008
1009 iwl_setup_scan_deferred_work(priv);
1010
1011 if (priv->lib->bt_params)
1012 iwlagn_bt_setup_deferred_work(priv);
1013
1014 init_timer(&priv->statistics_periodic);
1015 priv->statistics_periodic.data = (unsigned long)priv;
1016 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1017
1018 init_timer(&priv->ucode_trace);
1019 priv->ucode_trace.data = (unsigned long)priv;
1020 priv->ucode_trace.function = iwl_bg_ucode_trace;
1021 }
1022
1023 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1024 {
1025 if (priv->lib->bt_params)
1026 iwlagn_bt_cancel_deferred_work(priv);
1027
1028 cancel_work_sync(&priv->run_time_calib_work);
1029 cancel_work_sync(&priv->beacon_update);
1030
1031 iwl_cancel_scan_deferred_work(priv);
1032
1033 cancel_work_sync(&priv->bt_full_concurrency);
1034 cancel_work_sync(&priv->bt_runtime_config);
1035
1036 del_timer_sync(&priv->statistics_periodic);
1037 del_timer_sync(&priv->ucode_trace);
1038 }
1039
1040 static int iwl_init_drv(struct iwl_priv *priv)
1041 {
1042 spin_lock_init(&priv->sta_lock);
1043
1044 mutex_init(&priv->mutex);
1045
1046 INIT_LIST_HEAD(&priv->calib_results);
1047
1048 priv->band = IEEE80211_BAND_2GHZ;
1049
1050 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1051
1052 priv->iw_mode = NL80211_IFTYPE_STATION;
1053 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1054 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1055 priv->agg_tids_count = 0;
1056
1057 priv->rx_statistics_jiffies = jiffies;
1058
1059 /* Choose which receivers/antennas to use */
1060 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1061
1062 iwl_init_scan_params(priv);
1063
1064 /* init bt coex */
1065 if (priv->lib->bt_params &&
1066 priv->lib->bt_params->advanced_bt_coexist) {
1067 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1068 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1069 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1070 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1071 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1072 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1073 }
1074
1075 return 0;
1076 }
1077
1078 static void iwl_uninit_drv(struct iwl_priv *priv)
1079 {
1080 kfree(priv->scan_cmd);
1081 kfree(priv->beacon_cmd);
1082 kfree(rcu_dereference_raw(priv->noa_data));
1083 iwl_calib_free_results(priv);
1084 #ifdef CONFIG_IWLWIFI_DEBUGFS
1085 kfree(priv->wowlan_sram);
1086 #endif
1087 }
1088
1089 static void iwl_set_hw_params(struct iwl_priv *priv)
1090 {
1091 if (priv->cfg->ht_params)
1092 priv->hw_params.use_rts_for_aggregation =
1093 priv->cfg->ht_params->use_rts_for_aggregation;
1094
1095 /* Device-specific setup */
1096 priv->lib->set_hw_params(priv);
1097 }
1098
1099
1100
1101 /* show what optional capabilities we have */
1102 static void iwl_option_config(struct iwl_priv *priv)
1103 {
1104 #ifdef CONFIG_IWLWIFI_DEBUG
1105 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1106 #else
1107 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1108 #endif
1109
1110 #ifdef CONFIG_IWLWIFI_DEBUGFS
1111 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1112 #else
1113 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1114 #endif
1115
1116 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1117 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1118 #else
1119 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1120 #endif
1121 }
1122
1123 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1124 {
1125 struct iwl_nvm_data *data = priv->nvm_data;
1126 char *debug_msg;
1127
1128 if (data->sku_cap_11n_enable &&
1129 !priv->cfg->ht_params) {
1130 IWL_ERR(priv, "Invalid 11n configuration\n");
1131 return -EINVAL;
1132 }
1133
1134 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1135 !data->sku_cap_band_52GHz_enable) {
1136 IWL_ERR(priv, "Invalid device sku\n");
1137 return -EINVAL;
1138 }
1139
1140 debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
1141 IWL_DEBUG_INFO(priv, debug_msg,
1142 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1143 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1144 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1145
1146 priv->hw_params.tx_chains_num =
1147 num_of_ant(data->valid_tx_ant);
1148 if (priv->cfg->rx_with_siso_diversity)
1149 priv->hw_params.rx_chains_num = 1;
1150 else
1151 priv->hw_params.rx_chains_num =
1152 num_of_ant(data->valid_rx_ant);
1153
1154 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1155 data->valid_tx_ant,
1156 data->valid_rx_ant);
1157
1158 return 0;
1159 }
1160
1161 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1162 const struct iwl_cfg *cfg,
1163 const struct iwl_fw *fw,
1164 struct dentry *dbgfs_dir)
1165 {
1166 struct iwl_priv *priv;
1167 struct ieee80211_hw *hw;
1168 struct iwl_op_mode *op_mode;
1169 u16 num_mac;
1170 u32 ucode_flags;
1171 struct iwl_trans_config trans_cfg = {};
1172 static const u8 no_reclaim_cmds[] = {
1173 REPLY_RX_PHY_CMD,
1174 REPLY_RX_MPDU_CMD,
1175 REPLY_COMPRESSED_BA,
1176 STATISTICS_NOTIFICATION,
1177 REPLY_TX,
1178 };
1179 int i;
1180
1181 /************************
1182 * 1. Allocating HW data
1183 ************************/
1184 hw = iwl_alloc_all();
1185 if (!hw) {
1186 pr_err("%s: Cannot allocate network device\n", cfg->name);
1187 goto out;
1188 }
1189
1190 op_mode = hw->priv;
1191 op_mode->ops = &iwl_dvm_ops;
1192 priv = IWL_OP_MODE_GET_DVM(op_mode);
1193 priv->trans = trans;
1194 priv->dev = trans->dev;
1195 priv->cfg = cfg;
1196 priv->fw = fw;
1197
1198 switch (priv->cfg->device_family) {
1199 case IWL_DEVICE_FAMILY_1000:
1200 case IWL_DEVICE_FAMILY_100:
1201 priv->lib = &iwl_dvm_1000_cfg;
1202 break;
1203 case IWL_DEVICE_FAMILY_2000:
1204 priv->lib = &iwl_dvm_2000_cfg;
1205 break;
1206 case IWL_DEVICE_FAMILY_105:
1207 priv->lib = &iwl_dvm_105_cfg;
1208 break;
1209 case IWL_DEVICE_FAMILY_2030:
1210 case IWL_DEVICE_FAMILY_135:
1211 priv->lib = &iwl_dvm_2030_cfg;
1212 break;
1213 case IWL_DEVICE_FAMILY_5000:
1214 priv->lib = &iwl_dvm_5000_cfg;
1215 break;
1216 case IWL_DEVICE_FAMILY_5150:
1217 priv->lib = &iwl_dvm_5150_cfg;
1218 break;
1219 case IWL_DEVICE_FAMILY_6000:
1220 case IWL_DEVICE_FAMILY_6000i:
1221 priv->lib = &iwl_dvm_6000_cfg;
1222 break;
1223 case IWL_DEVICE_FAMILY_6005:
1224 priv->lib = &iwl_dvm_6005_cfg;
1225 break;
1226 case IWL_DEVICE_FAMILY_6050:
1227 case IWL_DEVICE_FAMILY_6150:
1228 priv->lib = &iwl_dvm_6050_cfg;
1229 break;
1230 case IWL_DEVICE_FAMILY_6030:
1231 priv->lib = &iwl_dvm_6030_cfg;
1232 break;
1233 default:
1234 break;
1235 }
1236
1237 if (WARN_ON(!priv->lib))
1238 goto out_free_hw;
1239
1240 /*
1241 * Populate the state variables that the transport layer needs
1242 * to know about.
1243 */
1244 trans_cfg.op_mode = op_mode;
1245 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1246 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1247 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1248 if (!iwlwifi_mod_params.wd_disable)
1249 trans_cfg.queue_watchdog_timeout =
1250 priv->cfg->base_params->wd_timeout;
1251 else
1252 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1253 trans_cfg.command_names = iwl_dvm_cmd_strings;
1254 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1255
1256 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1257 priv->cfg->base_params->num_of_queues);
1258
1259 ucode_flags = fw->ucode_capa.flags;
1260
1261 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1262 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1263 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1264 } else {
1265 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1266 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1267 }
1268
1269 /* Configure transport layer */
1270 iwl_trans_configure(priv->trans, &trans_cfg);
1271
1272 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1273 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1274
1275 /* At this point both hw and priv are allocated. */
1276
1277 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1278
1279 iwl_option_config(priv);
1280
1281 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1282
1283 /* is antenna coupling more than 35dB ? */
1284 priv->bt_ant_couple_ok =
1285 (iwlwifi_mod_params.ant_coupling >
1286 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1287 true : false;
1288
1289 /* bt channel inhibition enabled*/
1290 priv->bt_ch_announce = true;
1291 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1292 (priv->bt_ch_announce) ? "On" : "Off");
1293
1294 /* these spin locks will be used in apm_ops.init and EEPROM access
1295 * we should init now
1296 */
1297 spin_lock_init(&priv->statistics.lock);
1298
1299 /***********************
1300 * 2. Read REV register
1301 ***********************/
1302 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1303 priv->cfg->name, priv->trans->hw_rev);
1304
1305 if (iwl_trans_start_hw(priv->trans))
1306 goto out_free_hw;
1307
1308 /* Read the EEPROM */
1309 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1310 &priv->eeprom_blob_size)) {
1311 IWL_ERR(priv, "Unable to init EEPROM\n");
1312 goto out_free_hw;
1313 }
1314
1315 /* Reset chip to save power until we load uCode during "up". */
1316 iwl_trans_stop_device(priv->trans);
1317
1318 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1319 priv->eeprom_blob,
1320 priv->eeprom_blob_size);
1321 if (!priv->nvm_data)
1322 goto out_free_eeprom_blob;
1323
1324 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1325 goto out_free_eeprom;
1326
1327 if (iwl_eeprom_init_hw_params(priv))
1328 goto out_free_eeprom;
1329
1330 /* extract MAC Address */
1331 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1332 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1333 priv->hw->wiphy->addresses = priv->addresses;
1334 priv->hw->wiphy->n_addresses = 1;
1335 num_mac = priv->nvm_data->n_hw_addrs;
1336 if (num_mac > 1) {
1337 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1338 ETH_ALEN);
1339 priv->addresses[1].addr[5]++;
1340 priv->hw->wiphy->n_addresses++;
1341 }
1342
1343 /************************
1344 * 4. Setup HW constants
1345 ************************/
1346 iwl_set_hw_params(priv);
1347
1348 if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1349 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1350 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1351 /*
1352 * if not PAN, then don't support P2P -- might be a uCode
1353 * packaging bug or due to the eeprom check above
1354 */
1355 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1356 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1357
1358 /* Configure transport layer again*/
1359 iwl_trans_configure(priv->trans, &trans_cfg);
1360 }
1361
1362 /*******************
1363 * 5. Setup priv
1364 *******************/
1365 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1366 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1367 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1368 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1369 i != IWL_IPAN_CMD_QUEUE_NUM)
1370 priv->queue_to_mac80211[i] = i;
1371 atomic_set(&priv->queue_stop_count[i], 0);
1372 }
1373
1374 if (iwl_init_drv(priv))
1375 goto out_free_eeprom;
1376
1377 /* At this point both hw and priv are initialized. */
1378
1379 /********************
1380 * 6. Setup services
1381 ********************/
1382 iwl_setup_deferred_work(priv);
1383 iwl_setup_rx_handlers(priv);
1384
1385 iwl_power_initialize(priv);
1386 iwl_tt_initialize(priv);
1387
1388 snprintf(priv->hw->wiphy->fw_version,
1389 sizeof(priv->hw->wiphy->fw_version),
1390 "%s", fw->fw_version);
1391
1392 priv->new_scan_threshold_behaviour =
1393 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1394
1395 priv->phy_calib_chain_noise_reset_cmd =
1396 fw->ucode_capa.standard_phy_calibration_size;
1397 priv->phy_calib_chain_noise_gain_cmd =
1398 fw->ucode_capa.standard_phy_calibration_size + 1;
1399
1400 /* initialize all valid contexts */
1401 iwl_init_context(priv, ucode_flags);
1402
1403 /**************************************************
1404 * This is still part of probe() in a sense...
1405 *
1406 * 7. Setup and register with mac80211 and debugfs
1407 **************************************************/
1408 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1409 goto out_destroy_workqueue;
1410
1411 if (iwl_dbgfs_register(priv, dbgfs_dir))
1412 goto out_mac80211_unregister;
1413
1414 return op_mode;
1415
1416 out_mac80211_unregister:
1417 iwlagn_mac_unregister(priv);
1418 out_destroy_workqueue:
1419 iwl_tt_exit(priv);
1420 iwl_cancel_deferred_work(priv);
1421 destroy_workqueue(priv->workqueue);
1422 priv->workqueue = NULL;
1423 iwl_uninit_drv(priv);
1424 out_free_eeprom_blob:
1425 kfree(priv->eeprom_blob);
1426 out_free_eeprom:
1427 iwl_free_nvm_data(priv->nvm_data);
1428 out_free_hw:
1429 ieee80211_free_hw(priv->hw);
1430 out:
1431 op_mode = NULL;
1432 return op_mode;
1433 }
1434
1435 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1436 {
1437 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1438
1439 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1440
1441 iwlagn_mac_unregister(priv);
1442
1443 iwl_tt_exit(priv);
1444
1445 kfree(priv->eeprom_blob);
1446 iwl_free_nvm_data(priv->nvm_data);
1447
1448 /*netif_stop_queue(dev); */
1449 flush_workqueue(priv->workqueue);
1450
1451 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1452 * priv->workqueue... so we can't take down the workqueue
1453 * until now... */
1454 destroy_workqueue(priv->workqueue);
1455 priv->workqueue = NULL;
1456
1457 iwl_uninit_drv(priv);
1458
1459 dev_kfree_skb(priv->beacon_skb);
1460
1461 iwl_trans_op_mode_leave(priv->trans);
1462 ieee80211_free_hw(priv->hw);
1463 }
1464
1465 static const char * const desc_lookup_text[] = {
1466 "OK",
1467 "FAIL",
1468 "BAD_PARAM",
1469 "BAD_CHECKSUM",
1470 "NMI_INTERRUPT_WDG",
1471 "SYSASSERT",
1472 "FATAL_ERROR",
1473 "BAD_COMMAND",
1474 "HW_ERROR_TUNE_LOCK",
1475 "HW_ERROR_TEMPERATURE",
1476 "ILLEGAL_CHAN_FREQ",
1477 "VCC_NOT_STABLE",
1478 "FH_ERROR",
1479 "NMI_INTERRUPT_HOST",
1480 "NMI_INTERRUPT_ACTION_PT",
1481 "NMI_INTERRUPT_UNKNOWN",
1482 "UCODE_VERSION_MISMATCH",
1483 "HW_ERROR_ABS_LOCK",
1484 "HW_ERROR_CAL_LOCK_FAIL",
1485 "NMI_INTERRUPT_INST_ACTION_PT",
1486 "NMI_INTERRUPT_DATA_ACTION_PT",
1487 "NMI_TRM_HW_ER",
1488 "NMI_INTERRUPT_TRM",
1489 "NMI_INTERRUPT_BREAK_POINT",
1490 "DEBUG_0",
1491 "DEBUG_1",
1492 "DEBUG_2",
1493 "DEBUG_3",
1494 };
1495
1496 static struct { char *name; u8 num; } advanced_lookup[] = {
1497 { "NMI_INTERRUPT_WDG", 0x34 },
1498 { "SYSASSERT", 0x35 },
1499 { "UCODE_VERSION_MISMATCH", 0x37 },
1500 { "BAD_COMMAND", 0x38 },
1501 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1502 { "FATAL_ERROR", 0x3D },
1503 { "NMI_TRM_HW_ERR", 0x46 },
1504 { "NMI_INTERRUPT_TRM", 0x4C },
1505 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1506 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1507 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1508 { "NMI_INTERRUPT_HOST", 0x66 },
1509 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1510 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1511 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1512 { "ADVANCED_SYSASSERT", 0 },
1513 };
1514
1515 static const char *desc_lookup(u32 num)
1516 {
1517 int i;
1518 int max = ARRAY_SIZE(desc_lookup_text);
1519
1520 if (num < max)
1521 return desc_lookup_text[num];
1522
1523 max = ARRAY_SIZE(advanced_lookup) - 1;
1524 for (i = 0; i < max; i++) {
1525 if (advanced_lookup[i].num == num)
1526 break;
1527 }
1528 return advanced_lookup[i].name;
1529 }
1530
1531 #define ERROR_START_OFFSET (1 * sizeof(u32))
1532 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1533
1534 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1535 {
1536 struct iwl_trans *trans = priv->trans;
1537 u32 base;
1538 struct iwl_error_event_table table;
1539
1540 base = priv->device_pointers.error_event_table;
1541 if (priv->cur_ucode == IWL_UCODE_INIT) {
1542 if (!base)
1543 base = priv->fw->init_errlog_ptr;
1544 } else {
1545 if (!base)
1546 base = priv->fw->inst_errlog_ptr;
1547 }
1548
1549 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1550 IWL_ERR(priv,
1551 "Not valid error log pointer 0x%08X for %s uCode\n",
1552 base,
1553 (priv->cur_ucode == IWL_UCODE_INIT)
1554 ? "Init" : "RT");
1555 return;
1556 }
1557
1558 /*TODO: Update dbgfs with ISR error stats obtained below */
1559 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1560
1561 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1562 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1563 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1564 priv->status, table.valid);
1565 }
1566
1567 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1568 table.data1, table.data2, table.line,
1569 table.blink1, table.blink2, table.ilink1,
1570 table.ilink2, table.bcon_time, table.gp1,
1571 table.gp2, table.gp3, table.ucode_ver,
1572 table.hw_ver, table.brd_ver);
1573 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1574 desc_lookup(table.error_id));
1575 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1576 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1577 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1578 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1579 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1580 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1581 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1582 IWL_ERR(priv, "0x%08X | line\n", table.line);
1583 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1584 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1585 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1586 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1587 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1588 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1589 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1590 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1591 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1592 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1593 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1594 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1595 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1596 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1597 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1598 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1599 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1600 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1601 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1602 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1603 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1604 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1605 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1606 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1607 }
1608
1609 #define EVENT_START_OFFSET (4 * sizeof(u32))
1610
1611 /**
1612 * iwl_print_event_log - Dump error event log to syslog
1613 *
1614 */
1615 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1616 u32 num_events, u32 mode,
1617 int pos, char **buf, size_t bufsz)
1618 {
1619 u32 i;
1620 u32 base; /* SRAM byte address of event log header */
1621 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1622 u32 ptr; /* SRAM byte address of log data */
1623 u32 ev, time, data; /* event log data */
1624 unsigned long reg_flags;
1625
1626 struct iwl_trans *trans = priv->trans;
1627
1628 if (num_events == 0)
1629 return pos;
1630
1631 base = priv->device_pointers.log_event_table;
1632 if (priv->cur_ucode == IWL_UCODE_INIT) {
1633 if (!base)
1634 base = priv->fw->init_evtlog_ptr;
1635 } else {
1636 if (!base)
1637 base = priv->fw->inst_evtlog_ptr;
1638 }
1639
1640 if (mode == 0)
1641 event_size = 2 * sizeof(u32);
1642 else
1643 event_size = 3 * sizeof(u32);
1644
1645 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1646
1647 /* Make sure device is powered up for SRAM reads */
1648 if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1649 return pos;
1650
1651 /* Set starting address; reads will auto-increment */
1652 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1653
1654 /* "time" is actually "data" for mode 0 (no timestamp).
1655 * place event id # at far right for easier visual parsing. */
1656 for (i = 0; i < num_events; i++) {
1657 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1658 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1659 if (mode == 0) {
1660 /* data, ev */
1661 if (bufsz) {
1662 pos += scnprintf(*buf + pos, bufsz - pos,
1663 "EVT_LOG:0x%08x:%04u\n",
1664 time, ev);
1665 } else {
1666 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1667 time, ev);
1668 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1669 time, ev);
1670 }
1671 } else {
1672 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1673 if (bufsz) {
1674 pos += scnprintf(*buf + pos, bufsz - pos,
1675 "EVT_LOGT:%010u:0x%08x:%04u\n",
1676 time, data, ev);
1677 } else {
1678 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1679 time, data, ev);
1680 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1681 data, ev);
1682 }
1683 }
1684 }
1685
1686 /* Allow device to power down */
1687 iwl_trans_release_nic_access(trans, &reg_flags);
1688 return pos;
1689 }
1690
1691 /**
1692 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1693 */
1694 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1695 u32 num_wraps, u32 next_entry,
1696 u32 size, u32 mode,
1697 int pos, char **buf, size_t bufsz)
1698 {
1699 /*
1700 * display the newest DEFAULT_LOG_ENTRIES entries
1701 * i.e the entries just before the next ont that uCode would fill.
1702 */
1703 if (num_wraps) {
1704 if (next_entry < size) {
1705 pos = iwl_print_event_log(priv,
1706 capacity - (size - next_entry),
1707 size - next_entry, mode,
1708 pos, buf, bufsz);
1709 pos = iwl_print_event_log(priv, 0,
1710 next_entry, mode,
1711 pos, buf, bufsz);
1712 } else
1713 pos = iwl_print_event_log(priv, next_entry - size,
1714 size, mode, pos, buf, bufsz);
1715 } else {
1716 if (next_entry < size) {
1717 pos = iwl_print_event_log(priv, 0, next_entry,
1718 mode, pos, buf, bufsz);
1719 } else {
1720 pos = iwl_print_event_log(priv, next_entry - size,
1721 size, mode, pos, buf, bufsz);
1722 }
1723 }
1724 return pos;
1725 }
1726
1727 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1728
1729 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1730 char **buf)
1731 {
1732 u32 base; /* SRAM byte address of event log header */
1733 u32 capacity; /* event log capacity in # entries */
1734 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1735 u32 num_wraps; /* # times uCode wrapped to top of log */
1736 u32 next_entry; /* index of next entry to be written by uCode */
1737 u32 size; /* # entries that we'll print */
1738 u32 logsize;
1739 int pos = 0;
1740 size_t bufsz = 0;
1741 struct iwl_trans *trans = priv->trans;
1742
1743 base = priv->device_pointers.log_event_table;
1744 if (priv->cur_ucode == IWL_UCODE_INIT) {
1745 logsize = priv->fw->init_evtlog_size;
1746 if (!base)
1747 base = priv->fw->init_evtlog_ptr;
1748 } else {
1749 logsize = priv->fw->inst_evtlog_size;
1750 if (!base)
1751 base = priv->fw->inst_evtlog_ptr;
1752 }
1753
1754 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1755 IWL_ERR(priv,
1756 "Invalid event log pointer 0x%08X for %s uCode\n",
1757 base,
1758 (priv->cur_ucode == IWL_UCODE_INIT)
1759 ? "Init" : "RT");
1760 return -EINVAL;
1761 }
1762
1763 /* event log header */
1764 capacity = iwl_trans_read_mem32(trans, base);
1765 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1766 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1767 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1768
1769 if (capacity > logsize) {
1770 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1771 "entries\n", capacity, logsize);
1772 capacity = logsize;
1773 }
1774
1775 if (next_entry > logsize) {
1776 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1777 next_entry, logsize);
1778 next_entry = logsize;
1779 }
1780
1781 size = num_wraps ? capacity : next_entry;
1782
1783 /* bail out if nothing in log */
1784 if (size == 0) {
1785 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1786 return pos;
1787 }
1788
1789 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1790 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1791 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1792 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1793 size);
1794
1795 #ifdef CONFIG_IWLWIFI_DEBUG
1796 if (buf) {
1797 if (full_log)
1798 bufsz = capacity * 48;
1799 else
1800 bufsz = size * 48;
1801 *buf = kmalloc(bufsz, GFP_KERNEL);
1802 if (!*buf)
1803 return -ENOMEM;
1804 }
1805 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1806 /*
1807 * if uCode has wrapped back to top of log,
1808 * start at the oldest entry,
1809 * i.e the next one that uCode would fill.
1810 */
1811 if (num_wraps)
1812 pos = iwl_print_event_log(priv, next_entry,
1813 capacity - next_entry, mode,
1814 pos, buf, bufsz);
1815 /* (then/else) start at top of log */
1816 pos = iwl_print_event_log(priv, 0,
1817 next_entry, mode, pos, buf, bufsz);
1818 } else
1819 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1820 next_entry, size, mode,
1821 pos, buf, bufsz);
1822 #else
1823 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1824 next_entry, size, mode,
1825 pos, buf, bufsz);
1826 #endif
1827 return pos;
1828 }
1829
1830 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1831 {
1832 unsigned int reload_msec;
1833 unsigned long reload_jiffies;
1834
1835 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1836 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1837
1838 /* uCode is no longer loaded. */
1839 priv->ucode_loaded = false;
1840
1841 /* Set the FW error flag -- cleared on iwl_down */
1842 set_bit(STATUS_FW_ERROR, &priv->status);
1843
1844 iwl_abort_notification_waits(&priv->notif_wait);
1845
1846 /* Keep the restart process from trying to send host
1847 * commands by clearing the ready bit */
1848 clear_bit(STATUS_READY, &priv->status);
1849
1850 if (!ondemand) {
1851 /*
1852 * If firmware keep reloading, then it indicate something
1853 * serious wrong and firmware having problem to recover
1854 * from it. Instead of keep trying which will fill the syslog
1855 * and hang the system, let's just stop it
1856 */
1857 reload_jiffies = jiffies;
1858 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1859 (long) priv->reload_jiffies);
1860 priv->reload_jiffies = reload_jiffies;
1861 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1862 priv->reload_count++;
1863 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1864 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1865 return;
1866 }
1867 } else
1868 priv->reload_count = 0;
1869 }
1870
1871 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1872 if (iwlwifi_mod_params.restart_fw) {
1873 IWL_DEBUG_FW_ERRORS(priv,
1874 "Restarting adapter due to uCode error.\n");
1875 queue_work(priv->workqueue, &priv->restart);
1876 } else
1877 IWL_DEBUG_FW_ERRORS(priv,
1878 "Detected FW error, but not restarting\n");
1879 }
1880 }
1881
1882 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1883 {
1884 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1885
1886 IWL_ERR(priv, "Loaded firmware version: %s\n",
1887 priv->fw->fw_version);
1888
1889 iwl_dump_nic_error_log(priv);
1890 iwl_dump_nic_event_log(priv, false, NULL);
1891
1892 iwlagn_fw_error(priv, false);
1893 }
1894
1895 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1896 {
1897 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1898
1899 if (!iwl_check_for_ct_kill(priv)) {
1900 IWL_ERR(priv, "Restarting adapter queue is full\n");
1901 iwlagn_fw_error(priv, false);
1902 }
1903 }
1904
1905 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1906
1907 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1908 {
1909 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1910
1911 /* SKU Control */
1912 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1913 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1914 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1915 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1916 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1917 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1918 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1919
1920 /* write radio config values to register */
1921 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1922 u32 reg_val =
1923 priv->nvm_data->radio_cfg_type <<
1924 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1925 priv->nvm_data->radio_cfg_step <<
1926 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1927 priv->nvm_data->radio_cfg_dash <<
1928 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1929
1930 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1931 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1932 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1933 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1934 reg_val);
1935
1936 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
1937 priv->nvm_data->radio_cfg_type,
1938 priv->nvm_data->radio_cfg_step,
1939 priv->nvm_data->radio_cfg_dash);
1940 } else {
1941 WARN_ON(1);
1942 }
1943
1944 /* set CSR_HW_CONFIG_REG for uCode use */
1945 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
1946 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
1947 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
1948
1949 /* W/A : NIC is stuck in a reset state after Early PCIe power off
1950 * (PCIe power is lost before PERST# is asserted),
1951 * causing ME FW to lose ownership and not being able to obtain it back.
1952 */
1953 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
1954 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
1955 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
1956
1957 if (priv->lib->nic_config)
1958 priv->lib->nic_config(priv);
1959 }
1960
1961 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
1962 {
1963 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1964
1965 clear_bit(STATUS_READY, &priv->status);
1966 IWL_ERR(priv, "RF is used by WiMAX\n");
1967 }
1968
1969 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
1970 {
1971 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1972 int mq = priv->queue_to_mac80211[queue];
1973
1974 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1975 return;
1976
1977 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
1978 IWL_DEBUG_TX_QUEUES(priv,
1979 "queue %d (mac80211 %d) already stopped\n",
1980 queue, mq);
1981 return;
1982 }
1983
1984 set_bit(mq, &priv->transport_queue_stop);
1985 ieee80211_stop_queue(priv->hw, mq);
1986 }
1987
1988 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
1989 {
1990 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1991 int mq = priv->queue_to_mac80211[queue];
1992
1993 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1994 return;
1995
1996 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
1997 IWL_DEBUG_TX_QUEUES(priv,
1998 "queue %d (mac80211 %d) already awake\n",
1999 queue, mq);
2000 return;
2001 }
2002
2003 clear_bit(mq, &priv->transport_queue_stop);
2004
2005 if (!priv->passive_no_rx)
2006 ieee80211_wake_queue(priv->hw, mq);
2007 }
2008
2009 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2010 {
2011 int mq;
2012
2013 if (!priv->passive_no_rx)
2014 return;
2015
2016 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2017 if (!test_bit(mq, &priv->transport_queue_stop)) {
2018 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2019 ieee80211_wake_queue(priv->hw, mq);
2020 } else {
2021 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2022 }
2023 }
2024
2025 priv->passive_no_rx = false;
2026 }
2027
2028 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2029 {
2030 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2031 struct ieee80211_tx_info *info;
2032
2033 info = IEEE80211_SKB_CB(skb);
2034 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2035 ieee80211_free_txskb(priv->hw, skb);
2036 }
2037
2038 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2039 {
2040 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2041
2042 if (state)
2043 set_bit(STATUS_RF_KILL_HW, &priv->status);
2044 else
2045 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2046
2047 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2048 }
2049
2050 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2051 .start = iwl_op_mode_dvm_start,
2052 .stop = iwl_op_mode_dvm_stop,
2053 .rx = iwl_rx_dispatch,
2054 .queue_full = iwl_stop_sw_queue,
2055 .queue_not_full = iwl_wake_sw_queue,
2056 .hw_rf_kill = iwl_set_hw_rfkill_state,
2057 .free_skb = iwl_free_skb,
2058 .nic_error = iwl_nic_error,
2059 .cmd_queue_full = iwl_cmd_queue_full,
2060 .nic_config = iwl_nic_config,
2061 .wimax_active = iwl_wimax_active,
2062 };
2063
2064 /*****************************************************************************
2065 *
2066 * driver and module entry point
2067 *
2068 *****************************************************************************/
2069 static int __init iwl_init(void)
2070 {
2071
2072 int ret;
2073
2074 ret = iwlagn_rate_control_register();
2075 if (ret) {
2076 pr_err("Unable to register rate control algorithm: %d\n", ret);
2077 return ret;
2078 }
2079
2080 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2081 if (ret) {
2082 pr_err("Unable to register op_mode: %d\n", ret);
2083 iwlagn_rate_control_unregister();
2084 }
2085
2086 return ret;
2087 }
2088 module_init(iwl_init);
2089
2090 static void __exit iwl_exit(void)
2091 {
2092 iwl_opmode_deregister("iwldvm");
2093 iwlagn_rate_control_unregister();
2094 }
2095 module_exit(iwl_exit);
Linux with added FPC-III support