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 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68 MODULE_DESCRIPTION(DRV_DESCRIPTION);
69 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
70 MODULE_LICENSE("GPL");
71
72 static const struct iwl_op_mode_ops iwl_dvm_ops;
73
iwl_update_chain_flags(struct iwl_priv * priv)74 void iwl_update_chain_flags(struct iwl_priv *priv)
75 {
76 struct iwl_rxon_context *ctx;
77
78 for_each_context(priv, ctx) {
79 iwlagn_set_rxon_chain(priv, ctx);
80 if (ctx->active.rx_chain != ctx->staging.rx_chain)
81 iwlagn_commit_rxon(priv, ctx);
82 }
83 }
84
85 /* 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)86 static void iwl_set_beacon_tim(struct iwl_priv *priv,
87 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
88 u8 *beacon, u32 frame_size)
89 {
90 u16 tim_idx;
91 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
92
93 /*
94 * The index is relative to frame start but we start looking at the
95 * variable-length part of the beacon.
96 */
97 tim_idx = mgmt->u.beacon.variable - beacon;
98
99 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
100 while ((tim_idx < (frame_size - 2)) &&
101 (beacon[tim_idx] != WLAN_EID_TIM))
102 tim_idx += beacon[tim_idx+1] + 2;
103
104 /* If TIM field was found, set variables */
105 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
106 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
107 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
108 } else
109 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
110 }
111
iwlagn_send_beacon_cmd(struct iwl_priv * priv)112 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
113 {
114 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
115 struct iwl_host_cmd cmd = {
116 .id = REPLY_TX_BEACON,
117 };
118 struct ieee80211_tx_info *info;
119 u32 frame_size;
120 u32 rate_flags;
121 u32 rate;
122
123 /*
124 * We have to set up the TX command, the TX Beacon command, and the
125 * beacon contents.
126 */
127
128 lockdep_assert_held(&priv->mutex);
129
130 if (!priv->beacon_ctx) {
131 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
132 return 0;
133 }
134
135 if (WARN_ON(!priv->beacon_skb))
136 return -EINVAL;
137
138 /* Allocate beacon command */
139 if (!priv->beacon_cmd)
140 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
141 tx_beacon_cmd = priv->beacon_cmd;
142 if (!tx_beacon_cmd)
143 return -ENOMEM;
144
145 frame_size = priv->beacon_skb->len;
146
147 /* Set up TX command fields */
148 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
149 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
150 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
151 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
152 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
153
154 /* Set up TX beacon command fields */
155 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
156 frame_size);
157
158 /* Set up packet rate and flags */
159 info = IEEE80211_SKB_CB(priv->beacon_skb);
160
161 /*
162 * Let's set up the rate at least somewhat correctly;
163 * it will currently not actually be used by the uCode,
164 * it uses the broadcast station's rate instead.
165 */
166 if (info->control.rates[0].idx < 0 ||
167 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
168 rate = 0;
169 else
170 rate = info->control.rates[0].idx;
171
172 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
173 priv->nvm_data->valid_tx_ant);
174 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
175
176 /* In mac80211, rates for 5 GHz start at 0 */
177 if (info->band == IEEE80211_BAND_5GHZ)
178 rate += IWL_FIRST_OFDM_RATE;
179 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
180 rate_flags |= RATE_MCS_CCK_MSK;
181
182 tx_beacon_cmd->tx.rate_n_flags =
183 iwl_hw_set_rate_n_flags(rate, rate_flags);
184
185 /* Submit command */
186 cmd.len[0] = sizeof(*tx_beacon_cmd);
187 cmd.data[0] = tx_beacon_cmd;
188 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
189 cmd.len[1] = frame_size;
190 cmd.data[1] = priv->beacon_skb->data;
191 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
192
193 return iwl_dvm_send_cmd(priv, &cmd);
194 }
195
iwl_bg_beacon_update(struct work_struct * work)196 static void iwl_bg_beacon_update(struct work_struct *work)
197 {
198 struct iwl_priv *priv =
199 container_of(work, struct iwl_priv, beacon_update);
200 struct sk_buff *beacon;
201
202 mutex_lock(&priv->mutex);
203 if (!priv->beacon_ctx) {
204 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
205 goto out;
206 }
207
208 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
209 /*
210 * The ucode will send beacon notifications even in
211 * IBSS mode, but we don't want to process them. But
212 * we need to defer the type check to here due to
213 * requiring locking around the beacon_ctx access.
214 */
215 goto out;
216 }
217
218 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
219 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
220 if (!beacon) {
221 IWL_ERR(priv, "update beacon failed -- keeping old\n");
222 goto out;
223 }
224
225 /* new beacon skb is allocated every time; dispose previous.*/
226 dev_kfree_skb(priv->beacon_skb);
227
228 priv->beacon_skb = beacon;
229
230 iwlagn_send_beacon_cmd(priv);
231 out:
232 mutex_unlock(&priv->mutex);
233 }
234
iwl_bg_bt_runtime_config(struct work_struct * work)235 static void iwl_bg_bt_runtime_config(struct work_struct *work)
236 {
237 struct iwl_priv *priv =
238 container_of(work, struct iwl_priv, bt_runtime_config);
239
240 mutex_lock(&priv->mutex);
241 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
242 goto out;
243
244 /* dont send host command if rf-kill is on */
245 if (!iwl_is_ready_rf(priv))
246 goto out;
247
248 iwlagn_send_advance_bt_config(priv);
249 out:
250 mutex_unlock(&priv->mutex);
251 }
252
iwl_bg_bt_full_concurrency(struct work_struct * work)253 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
254 {
255 struct iwl_priv *priv =
256 container_of(work, struct iwl_priv, bt_full_concurrency);
257 struct iwl_rxon_context *ctx;
258
259 mutex_lock(&priv->mutex);
260
261 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
262 goto out;
263
264 /* dont send host command if rf-kill is on */
265 if (!iwl_is_ready_rf(priv))
266 goto out;
267
268 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
269 priv->bt_full_concurrent ?
270 "full concurrency" : "3-wire");
271
272 /*
273 * LQ & RXON updated cmds must be sent before BT Config cmd
274 * to avoid 3-wire collisions
275 */
276 for_each_context(priv, ctx) {
277 iwlagn_set_rxon_chain(priv, ctx);
278 iwlagn_commit_rxon(priv, ctx);
279 }
280
281 iwlagn_send_advance_bt_config(priv);
282 out:
283 mutex_unlock(&priv->mutex);
284 }
285
iwl_send_statistics_request(struct iwl_priv * priv,u8 flags,bool clear)286 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
287 {
288 struct iwl_statistics_cmd statistics_cmd = {
289 .configuration_flags =
290 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
291 };
292
293 if (flags & CMD_ASYNC)
294 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
295 CMD_ASYNC,
296 sizeof(struct iwl_statistics_cmd),
297 &statistics_cmd);
298 else
299 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
300 sizeof(struct iwl_statistics_cmd),
301 &statistics_cmd);
302 }
303
304 /**
305 * iwl_bg_statistics_periodic - Timer callback to queue statistics
306 *
307 * This callback is provided in order to send a statistics request.
308 *
309 * This timer function is continually reset to execute within
310 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
311 * was received. We need to ensure we receive the statistics in order
312 * to update the temperature used for calibrating the TXPOWER.
313 */
iwl_bg_statistics_periodic(unsigned long data)314 static void iwl_bg_statistics_periodic(unsigned long data)
315 {
316 struct iwl_priv *priv = (struct iwl_priv *)data;
317
318 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
319 return;
320
321 /* dont send host command if rf-kill is on */
322 if (!iwl_is_ready_rf(priv))
323 return;
324
325 iwl_send_statistics_request(priv, CMD_ASYNC, false);
326 }
327
328
iwl_print_cont_event_trace(struct iwl_priv * priv,u32 base,u32 start_idx,u32 num_events,u32 capacity,u32 mode)329 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
330 u32 start_idx, u32 num_events,
331 u32 capacity, u32 mode)
332 {
333 u32 i;
334 u32 ptr; /* SRAM byte address of log data */
335 u32 ev, time, data; /* event log data */
336 unsigned long reg_flags;
337
338 if (mode == 0)
339 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
340 else
341 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
342
343 /* Make sure device is powered up for SRAM reads */
344 if (!iwl_trans_grab_nic_access(priv->trans, false, ®_flags))
345 return;
346
347 /* Set starting address; reads will auto-increment */
348 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
349
350 /*
351 * Refuse to read more than would have fit into the log from
352 * the current start_idx. This used to happen due to the race
353 * described below, but now WARN because the code below should
354 * prevent it from happening here.
355 */
356 if (WARN_ON(num_events > capacity - start_idx))
357 num_events = capacity - start_idx;
358
359 /*
360 * "time" is actually "data" for mode 0 (no timestamp).
361 * place event id # at far right for easier visual parsing.
362 */
363 for (i = 0; i < num_events; i++) {
364 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
365 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
366 if (mode == 0) {
367 trace_iwlwifi_dev_ucode_cont_event(
368 priv->trans->dev, 0, time, ev);
369 } else {
370 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
371 trace_iwlwifi_dev_ucode_cont_event(
372 priv->trans->dev, time, data, ev);
373 }
374 }
375 /* Allow device to power down */
376 iwl_trans_release_nic_access(priv->trans, ®_flags);
377 }
378
iwl_continuous_event_trace(struct iwl_priv * priv)379 static void iwl_continuous_event_trace(struct iwl_priv *priv)
380 {
381 u32 capacity; /* event log capacity in # entries */
382 struct {
383 u32 capacity;
384 u32 mode;
385 u32 wrap_counter;
386 u32 write_counter;
387 } __packed read;
388 u32 base; /* SRAM byte address of event log header */
389 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
390 u32 num_wraps; /* # times uCode wrapped to top of log */
391 u32 next_entry; /* index of next entry to be written by uCode */
392
393 base = priv->device_pointers.log_event_table;
394 if (iwlagn_hw_valid_rtc_data_addr(base)) {
395 iwl_trans_read_mem_bytes(priv->trans, base,
396 &read, sizeof(read));
397 capacity = read.capacity;
398 mode = read.mode;
399 num_wraps = read.wrap_counter;
400 next_entry = read.write_counter;
401 } else
402 return;
403
404 /*
405 * Unfortunately, the uCode doesn't use temporary variables.
406 * Therefore, it can happen that we read next_entry == capacity,
407 * which really means next_entry == 0.
408 */
409 if (unlikely(next_entry == capacity))
410 next_entry = 0;
411 /*
412 * Additionally, the uCode increases the write pointer before
413 * the wraps counter, so if the write pointer is smaller than
414 * the old write pointer (wrap occurred) but we read that no
415 * wrap occurred, we actually read between the next_entry and
416 * num_wraps update (this does happen in practice!!) -- take
417 * that into account by increasing num_wraps.
418 */
419 if (unlikely(next_entry < priv->event_log.next_entry &&
420 num_wraps == priv->event_log.num_wraps))
421 num_wraps++;
422
423 if (num_wraps == priv->event_log.num_wraps) {
424 iwl_print_cont_event_trace(
425 priv, base, priv->event_log.next_entry,
426 next_entry - priv->event_log.next_entry,
427 capacity, mode);
428
429 priv->event_log.non_wraps_count++;
430 } else {
431 if (num_wraps - priv->event_log.num_wraps > 1)
432 priv->event_log.wraps_more_count++;
433 else
434 priv->event_log.wraps_once_count++;
435
436 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
437 num_wraps - priv->event_log.num_wraps,
438 next_entry, priv->event_log.next_entry);
439
440 if (next_entry < priv->event_log.next_entry) {
441 iwl_print_cont_event_trace(
442 priv, base, priv->event_log.next_entry,
443 capacity - priv->event_log.next_entry,
444 capacity, mode);
445
446 iwl_print_cont_event_trace(
447 priv, base, 0, next_entry, capacity, mode);
448 } else {
449 iwl_print_cont_event_trace(
450 priv, base, next_entry,
451 capacity - next_entry,
452 capacity, mode);
453
454 iwl_print_cont_event_trace(
455 priv, base, 0, next_entry, capacity, mode);
456 }
457 }
458
459 priv->event_log.num_wraps = num_wraps;
460 priv->event_log.next_entry = next_entry;
461 }
462
463 /**
464 * iwl_bg_ucode_trace - Timer callback to log ucode event
465 *
466 * The timer is continually set to execute every
467 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
468 * this function is to perform continuous uCode event logging operation
469 * if enabled
470 */
iwl_bg_ucode_trace(unsigned long data)471 static void iwl_bg_ucode_trace(unsigned long data)
472 {
473 struct iwl_priv *priv = (struct iwl_priv *)data;
474
475 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
476 return;
477
478 if (priv->event_log.ucode_trace) {
479 iwl_continuous_event_trace(priv);
480 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
481 mod_timer(&priv->ucode_trace,
482 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
483 }
484 }
485
iwl_bg_tx_flush(struct work_struct * work)486 static void iwl_bg_tx_flush(struct work_struct *work)
487 {
488 struct iwl_priv *priv =
489 container_of(work, struct iwl_priv, tx_flush);
490
491 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
492 return;
493
494 /* do nothing if rf-kill is on */
495 if (!iwl_is_ready_rf(priv))
496 return;
497
498 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
499 iwlagn_dev_txfifo_flush(priv);
500 }
501
502 /*
503 * queue/FIFO/AC mapping definitions
504 */
505
506 static const u8 iwlagn_bss_ac_to_fifo[] = {
507 IWL_TX_FIFO_VO,
508 IWL_TX_FIFO_VI,
509 IWL_TX_FIFO_BE,
510 IWL_TX_FIFO_BK,
511 };
512
513 static const u8 iwlagn_bss_ac_to_queue[] = {
514 0, 1, 2, 3,
515 };
516
517 static const u8 iwlagn_pan_ac_to_fifo[] = {
518 IWL_TX_FIFO_VO_IPAN,
519 IWL_TX_FIFO_VI_IPAN,
520 IWL_TX_FIFO_BE_IPAN,
521 IWL_TX_FIFO_BK_IPAN,
522 };
523
524 static const u8 iwlagn_pan_ac_to_queue[] = {
525 7, 6, 5, 4,
526 };
527
iwl_init_context(struct iwl_priv * priv,u32 ucode_flags)528 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
529 {
530 int i;
531
532 /*
533 * The default context is always valid,
534 * the PAN context depends on uCode.
535 */
536 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
537 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
538 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
539
540 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
541 priv->contexts[i].ctxid = i;
542
543 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
544 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
545 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
546 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
547 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
548 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
549 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
550 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
551 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
552 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
553 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
554 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
555 BIT(NL80211_IFTYPE_STATION);
556 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
557 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
558 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
559 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
560 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
561 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
562 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
563 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
564
565 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
566 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
567 REPLY_WIPAN_RXON_TIMING;
568 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
569 REPLY_WIPAN_RXON_ASSOC;
570 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
571 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
572 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
573 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
574 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
575 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
576 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
577
578 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
579 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
580 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
581 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
582 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
583 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
584 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
585 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
586
587 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
588 }
589
iwl_rf_kill_ct_config(struct iwl_priv * priv)590 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
591 {
592 struct iwl_ct_kill_config cmd;
593 struct iwl_ct_kill_throttling_config adv_cmd;
594 int ret = 0;
595
596 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
597 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
598
599 priv->thermal_throttle.ct_kill_toggle = false;
600
601 if (priv->lib->support_ct_kill_exit) {
602 adv_cmd.critical_temperature_enter =
603 cpu_to_le32(priv->hw_params.ct_kill_threshold);
604 adv_cmd.critical_temperature_exit =
605 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
606
607 ret = iwl_dvm_send_cmd_pdu(priv,
608 REPLY_CT_KILL_CONFIG_CMD,
609 0, sizeof(adv_cmd), &adv_cmd);
610 if (ret)
611 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
612 else
613 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
614 "succeeded, critical temperature enter is %d,"
615 "exit is %d\n",
616 priv->hw_params.ct_kill_threshold,
617 priv->hw_params.ct_kill_exit_threshold);
618 } else {
619 cmd.critical_temperature_R =
620 cpu_to_le32(priv->hw_params.ct_kill_threshold);
621
622 ret = iwl_dvm_send_cmd_pdu(priv,
623 REPLY_CT_KILL_CONFIG_CMD,
624 0, sizeof(cmd), &cmd);
625 if (ret)
626 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
627 else
628 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
629 "succeeded, "
630 "critical temperature is %d\n",
631 priv->hw_params.ct_kill_threshold);
632 }
633 }
634
iwlagn_send_calib_cfg_rt(struct iwl_priv * priv,u32 cfg)635 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
636 {
637 struct iwl_calib_cfg_cmd calib_cfg_cmd;
638 struct iwl_host_cmd cmd = {
639 .id = CALIBRATION_CFG_CMD,
640 .len = { sizeof(struct iwl_calib_cfg_cmd), },
641 .data = { &calib_cfg_cmd, },
642 };
643
644 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
645 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
646 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
647
648 return iwl_dvm_send_cmd(priv, &cmd);
649 }
650
651
iwlagn_send_tx_ant_config(struct iwl_priv * priv,u8 valid_tx_ant)652 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
653 {
654 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
655 .valid = cpu_to_le32(valid_tx_ant),
656 };
657
658 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
659 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
660 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
661 sizeof(struct iwl_tx_ant_config_cmd),
662 &tx_ant_cmd);
663 } else {
664 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
665 return -EOPNOTSUPP;
666 }
667 }
668
iwl_send_bt_config(struct iwl_priv * priv)669 static void iwl_send_bt_config(struct iwl_priv *priv)
670 {
671 struct iwl_bt_cmd bt_cmd = {
672 .lead_time = BT_LEAD_TIME_DEF,
673 .max_kill = BT_MAX_KILL_DEF,
674 .kill_ack_mask = 0,
675 .kill_cts_mask = 0,
676 };
677
678 if (!iwlwifi_mod_params.bt_coex_active)
679 bt_cmd.flags = BT_COEX_DISABLE;
680 else
681 bt_cmd.flags = BT_COEX_ENABLE;
682
683 priv->bt_enable_flag = bt_cmd.flags;
684 IWL_DEBUG_INFO(priv, "BT coex %s\n",
685 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
686
687 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
688 0, sizeof(struct iwl_bt_cmd), &bt_cmd))
689 IWL_ERR(priv, "failed to send BT Coex Config\n");
690 }
691
692 /**
693 * iwl_alive_start - called after REPLY_ALIVE notification received
694 * from protocol/runtime uCode (initialization uCode's
695 * Alive gets handled by iwl_init_alive_start()).
696 */
iwl_alive_start(struct iwl_priv * priv)697 int iwl_alive_start(struct iwl_priv *priv)
698 {
699 int ret = 0;
700 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
701
702 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
703
704 /* After the ALIVE response, we can send host commands to the uCode */
705 set_bit(STATUS_ALIVE, &priv->status);
706
707 if (iwl_is_rfkill(priv))
708 return -ERFKILL;
709
710 if (priv->event_log.ucode_trace) {
711 /* start collecting data now */
712 mod_timer(&priv->ucode_trace, jiffies);
713 }
714
715 /* download priority table before any calibration request */
716 if (priv->lib->bt_params &&
717 priv->lib->bt_params->advanced_bt_coexist) {
718 /* Configure Bluetooth device coexistence support */
719 if (priv->lib->bt_params->bt_sco_disable)
720 priv->bt_enable_pspoll = false;
721 else
722 priv->bt_enable_pspoll = true;
723
724 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
725 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
726 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
727 iwlagn_send_advance_bt_config(priv);
728 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
729 priv->cur_rssi_ctx = NULL;
730
731 iwl_send_prio_tbl(priv);
732
733 /* FIXME: w/a to force change uCode BT state machine */
734 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
735 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
736 if (ret)
737 return ret;
738 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
739 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
740 if (ret)
741 return ret;
742 } else if (priv->lib->bt_params) {
743 /*
744 * default is 2-wire BT coexexistence support
745 */
746 iwl_send_bt_config(priv);
747 }
748
749 /*
750 * Perform runtime calibrations, including DC calibration.
751 */
752 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
753
754 ieee80211_wake_queues(priv->hw);
755
756 /* Configure Tx antenna selection based on H/W config */
757 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
758
759 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
760 struct iwl_rxon_cmd *active_rxon =
761 (struct iwl_rxon_cmd *)&ctx->active;
762 /* apply any changes in staging */
763 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
764 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
765 } else {
766 struct iwl_rxon_context *tmp;
767 /* Initialize our rx_config data */
768 for_each_context(priv, tmp)
769 iwl_connection_init_rx_config(priv, tmp);
770
771 iwlagn_set_rxon_chain(priv, ctx);
772 }
773
774 if (!priv->wowlan) {
775 /* WoWLAN ucode will not reply in the same way, skip it */
776 iwl_reset_run_time_calib(priv);
777 }
778
779 set_bit(STATUS_READY, &priv->status);
780
781 /* Configure the adapter for unassociated operation */
782 ret = iwlagn_commit_rxon(priv, ctx);
783 if (ret)
784 return ret;
785
786 /* At this point, the NIC is initialized and operational */
787 iwl_rf_kill_ct_config(priv);
788
789 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
790
791 return iwl_power_update_mode(priv, true);
792 }
793
794 /**
795 * iwl_clear_driver_stations - clear knowledge of all stations from driver
796 * @priv: iwl priv struct
797 *
798 * This is called during iwl_down() to make sure that in the case
799 * we're coming there from a hardware restart mac80211 will be
800 * able to reconfigure stations -- if we're getting there in the
801 * normal down flow then the stations will already be cleared.
802 */
iwl_clear_driver_stations(struct iwl_priv * priv)803 static void iwl_clear_driver_stations(struct iwl_priv *priv)
804 {
805 struct iwl_rxon_context *ctx;
806
807 spin_lock_bh(&priv->sta_lock);
808 memset(priv->stations, 0, sizeof(priv->stations));
809 priv->num_stations = 0;
810
811 priv->ucode_key_table = 0;
812
813 for_each_context(priv, ctx) {
814 /*
815 * Remove all key information that is not stored as part
816 * of station information since mac80211 may not have had
817 * a chance to remove all the keys. When device is
818 * reconfigured by mac80211 after an error all keys will
819 * be reconfigured.
820 */
821 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
822 ctx->key_mapping_keys = 0;
823 }
824
825 spin_unlock_bh(&priv->sta_lock);
826 }
827
iwl_down(struct iwl_priv * priv)828 void iwl_down(struct iwl_priv *priv)
829 {
830 int exit_pending;
831
832 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
833
834 lockdep_assert_held(&priv->mutex);
835
836 iwl_scan_cancel_timeout(priv, 200);
837
838 exit_pending =
839 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
840
841 iwl_clear_ucode_stations(priv, NULL);
842 iwl_dealloc_bcast_stations(priv);
843 iwl_clear_driver_stations(priv);
844
845 /* reset BT coex data */
846 priv->bt_status = 0;
847 priv->cur_rssi_ctx = NULL;
848 priv->bt_is_sco = 0;
849 if (priv->lib->bt_params)
850 priv->bt_traffic_load =
851 priv->lib->bt_params->bt_init_traffic_load;
852 else
853 priv->bt_traffic_load = 0;
854 priv->bt_full_concurrent = false;
855 priv->bt_ci_compliance = 0;
856
857 /* Wipe out the EXIT_PENDING status bit if we are not actually
858 * exiting the module */
859 if (!exit_pending)
860 clear_bit(STATUS_EXIT_PENDING, &priv->status);
861
862 if (priv->mac80211_registered)
863 ieee80211_stop_queues(priv->hw);
864
865 priv->ucode_loaded = false;
866 iwl_trans_stop_device(priv->trans);
867
868 /* Set num_aux_in_flight must be done after the transport is stopped */
869 atomic_set(&priv->num_aux_in_flight, 0);
870
871 /* Clear out all status bits but a few that are stable across reset */
872 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
873 STATUS_RF_KILL_HW |
874 test_bit(STATUS_FW_ERROR, &priv->status) <<
875 STATUS_FW_ERROR |
876 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
877 STATUS_EXIT_PENDING;
878
879 dev_kfree_skb(priv->beacon_skb);
880 priv->beacon_skb = NULL;
881 }
882
883 /*****************************************************************************
884 *
885 * Workqueue callbacks
886 *
887 *****************************************************************************/
888
iwl_bg_run_time_calib_work(struct work_struct * work)889 static void iwl_bg_run_time_calib_work(struct work_struct *work)
890 {
891 struct iwl_priv *priv = container_of(work, struct iwl_priv,
892 run_time_calib_work);
893
894 mutex_lock(&priv->mutex);
895
896 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
897 test_bit(STATUS_SCANNING, &priv->status)) {
898 mutex_unlock(&priv->mutex);
899 return;
900 }
901
902 if (priv->start_calib) {
903 iwl_chain_noise_calibration(priv);
904 iwl_sensitivity_calibration(priv);
905 }
906
907 mutex_unlock(&priv->mutex);
908 }
909
iwlagn_prepare_restart(struct iwl_priv * priv)910 void iwlagn_prepare_restart(struct iwl_priv *priv)
911 {
912 bool bt_full_concurrent;
913 u8 bt_ci_compliance;
914 u8 bt_load;
915 u8 bt_status;
916 bool bt_is_sco;
917 int i;
918
919 lockdep_assert_held(&priv->mutex);
920
921 priv->is_open = 0;
922
923 /*
924 * __iwl_down() will clear the BT status variables,
925 * which is correct, but when we restart we really
926 * want to keep them so restore them afterwards.
927 *
928 * The restart process will later pick them up and
929 * re-configure the hw when we reconfigure the BT
930 * command.
931 */
932 bt_full_concurrent = priv->bt_full_concurrent;
933 bt_ci_compliance = priv->bt_ci_compliance;
934 bt_load = priv->bt_traffic_load;
935 bt_status = priv->bt_status;
936 bt_is_sco = priv->bt_is_sco;
937
938 iwl_down(priv);
939
940 priv->bt_full_concurrent = bt_full_concurrent;
941 priv->bt_ci_compliance = bt_ci_compliance;
942 priv->bt_traffic_load = bt_load;
943 priv->bt_status = bt_status;
944 priv->bt_is_sco = bt_is_sco;
945
946 /* reset aggregation queues */
947 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
948 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
949 /* and stop counts */
950 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
951 atomic_set(&priv->queue_stop_count[i], 0);
952
953 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
954 }
955
iwl_bg_restart(struct work_struct * data)956 static void iwl_bg_restart(struct work_struct *data)
957 {
958 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
959
960 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
961 return;
962
963 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
964 mutex_lock(&priv->mutex);
965 iwlagn_prepare_restart(priv);
966 mutex_unlock(&priv->mutex);
967 iwl_cancel_deferred_work(priv);
968 if (priv->mac80211_registered)
969 ieee80211_restart_hw(priv->hw);
970 else
971 IWL_ERR(priv,
972 "Cannot request restart before registrating with mac80211\n");
973 } else {
974 WARN_ON(1);
975 }
976 }
977
978 /*****************************************************************************
979 *
980 * driver setup and teardown
981 *
982 *****************************************************************************/
983
iwl_setup_deferred_work(struct iwl_priv * priv)984 static void iwl_setup_deferred_work(struct iwl_priv *priv)
985 {
986 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
987
988 INIT_WORK(&priv->restart, iwl_bg_restart);
989 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
990 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
991 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
992 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
993 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
994
995 iwl_setup_scan_deferred_work(priv);
996
997 if (priv->lib->bt_params)
998 iwlagn_bt_setup_deferred_work(priv);
999
1000 setup_timer(&priv->statistics_periodic, iwl_bg_statistics_periodic,
1001 (unsigned long)priv);
1002
1003 setup_timer(&priv->ucode_trace, iwl_bg_ucode_trace,
1004 (unsigned long)priv);
1005 }
1006
iwl_cancel_deferred_work(struct iwl_priv * priv)1007 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1008 {
1009 if (priv->lib->bt_params)
1010 iwlagn_bt_cancel_deferred_work(priv);
1011
1012 cancel_work_sync(&priv->run_time_calib_work);
1013 cancel_work_sync(&priv->beacon_update);
1014
1015 iwl_cancel_scan_deferred_work(priv);
1016
1017 cancel_work_sync(&priv->bt_full_concurrency);
1018 cancel_work_sync(&priv->bt_runtime_config);
1019
1020 del_timer_sync(&priv->statistics_periodic);
1021 del_timer_sync(&priv->ucode_trace);
1022 }
1023
iwl_init_drv(struct iwl_priv * priv)1024 static int iwl_init_drv(struct iwl_priv *priv)
1025 {
1026 spin_lock_init(&priv->sta_lock);
1027
1028 mutex_init(&priv->mutex);
1029
1030 INIT_LIST_HEAD(&priv->calib_results);
1031
1032 priv->band = IEEE80211_BAND_2GHZ;
1033
1034 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1035
1036 priv->iw_mode = NL80211_IFTYPE_STATION;
1037 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1038 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1039 priv->agg_tids_count = 0;
1040
1041 priv->rx_statistics_jiffies = jiffies;
1042
1043 /* Choose which receivers/antennas to use */
1044 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1045
1046 iwl_init_scan_params(priv);
1047
1048 /* init bt coex */
1049 if (priv->lib->bt_params &&
1050 priv->lib->bt_params->advanced_bt_coexist) {
1051 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1052 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1053 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1054 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1055 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1056 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1057 }
1058
1059 return 0;
1060 }
1061
iwl_uninit_drv(struct iwl_priv * priv)1062 static void iwl_uninit_drv(struct iwl_priv *priv)
1063 {
1064 kfree(priv->scan_cmd);
1065 kfree(priv->beacon_cmd);
1066 kfree(rcu_dereference_raw(priv->noa_data));
1067 iwl_calib_free_results(priv);
1068 #ifdef CONFIG_IWLWIFI_DEBUGFS
1069 kfree(priv->wowlan_sram);
1070 #endif
1071 }
1072
iwl_set_hw_params(struct iwl_priv * priv)1073 static void iwl_set_hw_params(struct iwl_priv *priv)
1074 {
1075 if (priv->cfg->ht_params)
1076 priv->hw_params.use_rts_for_aggregation =
1077 priv->cfg->ht_params->use_rts_for_aggregation;
1078
1079 /* Device-specific setup */
1080 priv->lib->set_hw_params(priv);
1081 }
1082
1083
1084
1085 /* show what optional capabilities we have */
iwl_option_config(struct iwl_priv * priv)1086 static void iwl_option_config(struct iwl_priv *priv)
1087 {
1088 #ifdef CONFIG_IWLWIFI_DEBUG
1089 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1090 #else
1091 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1092 #endif
1093
1094 #ifdef CONFIG_IWLWIFI_DEBUGFS
1095 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1096 #else
1097 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1098 #endif
1099
1100 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1101 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1102 #else
1103 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1104 #endif
1105 }
1106
iwl_eeprom_init_hw_params(struct iwl_priv * priv)1107 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1108 {
1109 struct iwl_nvm_data *data = priv->nvm_data;
1110
1111 if (data->sku_cap_11n_enable &&
1112 !priv->cfg->ht_params) {
1113 IWL_ERR(priv, "Invalid 11n configuration\n");
1114 return -EINVAL;
1115 }
1116
1117 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1118 !data->sku_cap_band_52GHz_enable) {
1119 IWL_ERR(priv, "Invalid device sku\n");
1120 return -EINVAL;
1121 }
1122
1123 IWL_DEBUG_INFO(priv,
1124 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1125 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1126 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1127 data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1128
1129 priv->hw_params.tx_chains_num =
1130 num_of_ant(data->valid_tx_ant);
1131 if (priv->cfg->rx_with_siso_diversity)
1132 priv->hw_params.rx_chains_num = 1;
1133 else
1134 priv->hw_params.rx_chains_num =
1135 num_of_ant(data->valid_rx_ant);
1136
1137 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1138 data->valid_tx_ant,
1139 data->valid_rx_ant);
1140
1141 return 0;
1142 }
1143
iwl_op_mode_dvm_start(struct iwl_trans * trans,const struct iwl_cfg * cfg,const struct iwl_fw * fw,struct dentry * dbgfs_dir)1144 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1145 const struct iwl_cfg *cfg,
1146 const struct iwl_fw *fw,
1147 struct dentry *dbgfs_dir)
1148 {
1149 struct iwl_priv *priv;
1150 struct ieee80211_hw *hw;
1151 struct iwl_op_mode *op_mode;
1152 u16 num_mac;
1153 u32 ucode_flags;
1154 struct iwl_trans_config trans_cfg = {};
1155 static const u8 no_reclaim_cmds[] = {
1156 REPLY_RX_PHY_CMD,
1157 REPLY_RX_MPDU_CMD,
1158 REPLY_COMPRESSED_BA,
1159 STATISTICS_NOTIFICATION,
1160 REPLY_TX,
1161 };
1162 int i;
1163
1164 /************************
1165 * 1. Allocating HW data
1166 ************************/
1167 hw = iwl_alloc_all();
1168 if (!hw) {
1169 pr_err("%s: Cannot allocate network device\n", cfg->name);
1170 goto out;
1171 }
1172
1173 op_mode = hw->priv;
1174 op_mode->ops = &iwl_dvm_ops;
1175 priv = IWL_OP_MODE_GET_DVM(op_mode);
1176 priv->trans = trans;
1177 priv->dev = trans->dev;
1178 priv->cfg = cfg;
1179 priv->fw = fw;
1180
1181 switch (priv->cfg->device_family) {
1182 case IWL_DEVICE_FAMILY_1000:
1183 case IWL_DEVICE_FAMILY_100:
1184 priv->lib = &iwl_dvm_1000_cfg;
1185 break;
1186 case IWL_DEVICE_FAMILY_2000:
1187 priv->lib = &iwl_dvm_2000_cfg;
1188 break;
1189 case IWL_DEVICE_FAMILY_105:
1190 priv->lib = &iwl_dvm_105_cfg;
1191 break;
1192 case IWL_DEVICE_FAMILY_2030:
1193 case IWL_DEVICE_FAMILY_135:
1194 priv->lib = &iwl_dvm_2030_cfg;
1195 break;
1196 case IWL_DEVICE_FAMILY_5000:
1197 priv->lib = &iwl_dvm_5000_cfg;
1198 break;
1199 case IWL_DEVICE_FAMILY_5150:
1200 priv->lib = &iwl_dvm_5150_cfg;
1201 break;
1202 case IWL_DEVICE_FAMILY_6000:
1203 case IWL_DEVICE_FAMILY_6000i:
1204 priv->lib = &iwl_dvm_6000_cfg;
1205 break;
1206 case IWL_DEVICE_FAMILY_6005:
1207 priv->lib = &iwl_dvm_6005_cfg;
1208 break;
1209 case IWL_DEVICE_FAMILY_6050:
1210 case IWL_DEVICE_FAMILY_6150:
1211 priv->lib = &iwl_dvm_6050_cfg;
1212 break;
1213 case IWL_DEVICE_FAMILY_6030:
1214 priv->lib = &iwl_dvm_6030_cfg;
1215 break;
1216 default:
1217 break;
1218 }
1219
1220 if (WARN_ON(!priv->lib))
1221 goto out_free_hw;
1222
1223 /*
1224 * Populate the state variables that the transport layer needs
1225 * to know about.
1226 */
1227 trans_cfg.op_mode = op_mode;
1228 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1229 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1230 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1231 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
1232
1233 trans_cfg.command_names = iwl_dvm_cmd_strings;
1234 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1235
1236 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1237 priv->cfg->base_params->num_of_queues);
1238
1239 ucode_flags = fw->ucode_capa.flags;
1240
1241 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1242 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1243 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1244 } else {
1245 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1246 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1247 }
1248
1249 /* Configure transport layer */
1250 iwl_trans_configure(priv->trans, &trans_cfg);
1251
1252 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1253 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1254
1255 /* At this point both hw and priv are allocated. */
1256
1257 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1258
1259 iwl_option_config(priv);
1260
1261 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1262
1263 /* is antenna coupling more than 35dB ? */
1264 priv->bt_ant_couple_ok =
1265 (iwlwifi_mod_params.ant_coupling >
1266 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1267 true : false;
1268
1269 /* bt channel inhibition enabled*/
1270 priv->bt_ch_announce = true;
1271 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1272 (priv->bt_ch_announce) ? "On" : "Off");
1273
1274 /* these spin locks will be used in apm_ops.init and EEPROM access
1275 * we should init now
1276 */
1277 spin_lock_init(&priv->statistics.lock);
1278
1279 /***********************
1280 * 2. Read REV register
1281 ***********************/
1282 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1283 priv->cfg->name, priv->trans->hw_rev);
1284
1285 if (iwl_trans_start_hw(priv->trans))
1286 goto out_free_hw;
1287
1288 /* Read the EEPROM */
1289 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1290 &priv->eeprom_blob_size)) {
1291 IWL_ERR(priv, "Unable to init EEPROM\n");
1292 goto out_free_hw;
1293 }
1294
1295 /* Reset chip to save power until we load uCode during "up". */
1296 iwl_trans_stop_device(priv->trans);
1297
1298 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1299 priv->eeprom_blob,
1300 priv->eeprom_blob_size);
1301 if (!priv->nvm_data)
1302 goto out_free_eeprom_blob;
1303
1304 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1305 goto out_free_eeprom;
1306
1307 if (iwl_eeprom_init_hw_params(priv))
1308 goto out_free_eeprom;
1309
1310 /* extract MAC Address */
1311 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1312 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1313 priv->hw->wiphy->addresses = priv->addresses;
1314 priv->hw->wiphy->n_addresses = 1;
1315 num_mac = priv->nvm_data->n_hw_addrs;
1316 if (num_mac > 1) {
1317 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1318 ETH_ALEN);
1319 priv->addresses[1].addr[5]++;
1320 priv->hw->wiphy->n_addresses++;
1321 }
1322
1323 /************************
1324 * 4. Setup HW constants
1325 ************************/
1326 iwl_set_hw_params(priv);
1327
1328 if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1329 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1330 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1331 /*
1332 * if not PAN, then don't support P2P -- might be a uCode
1333 * packaging bug or due to the eeprom check above
1334 */
1335 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1336 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1337
1338 /* Configure transport layer again*/
1339 iwl_trans_configure(priv->trans, &trans_cfg);
1340 }
1341
1342 /*******************
1343 * 5. Setup priv
1344 *******************/
1345 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1346 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1347 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1348 i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1349 i != IWL_IPAN_CMD_QUEUE_NUM)
1350 priv->queue_to_mac80211[i] = i;
1351 atomic_set(&priv->queue_stop_count[i], 0);
1352 }
1353
1354 if (iwl_init_drv(priv))
1355 goto out_free_eeprom;
1356
1357 /* At this point both hw and priv are initialized. */
1358
1359 /********************
1360 * 6. Setup services
1361 ********************/
1362 iwl_setup_deferred_work(priv);
1363 iwl_setup_rx_handlers(priv);
1364
1365 iwl_power_initialize(priv);
1366 iwl_tt_initialize(priv);
1367
1368 snprintf(priv->hw->wiphy->fw_version,
1369 sizeof(priv->hw->wiphy->fw_version),
1370 "%s", fw->fw_version);
1371
1372 priv->new_scan_threshold_behaviour =
1373 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1374
1375 priv->phy_calib_chain_noise_reset_cmd =
1376 fw->ucode_capa.standard_phy_calibration_size;
1377 priv->phy_calib_chain_noise_gain_cmd =
1378 fw->ucode_capa.standard_phy_calibration_size + 1;
1379
1380 /* initialize all valid contexts */
1381 iwl_init_context(priv, ucode_flags);
1382
1383 /**************************************************
1384 * This is still part of probe() in a sense...
1385 *
1386 * 7. Setup and register with mac80211 and debugfs
1387 **************************************************/
1388 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1389 goto out_destroy_workqueue;
1390
1391 if (iwl_dbgfs_register(priv, dbgfs_dir))
1392 goto out_mac80211_unregister;
1393
1394 return op_mode;
1395
1396 out_mac80211_unregister:
1397 iwlagn_mac_unregister(priv);
1398 out_destroy_workqueue:
1399 iwl_tt_exit(priv);
1400 iwl_cancel_deferred_work(priv);
1401 destroy_workqueue(priv->workqueue);
1402 priv->workqueue = NULL;
1403 iwl_uninit_drv(priv);
1404 out_free_eeprom_blob:
1405 kfree(priv->eeprom_blob);
1406 out_free_eeprom:
1407 iwl_free_nvm_data(priv->nvm_data);
1408 out_free_hw:
1409 ieee80211_free_hw(priv->hw);
1410 out:
1411 op_mode = NULL;
1412 return op_mode;
1413 }
1414
iwl_op_mode_dvm_stop(struct iwl_op_mode * op_mode)1415 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1416 {
1417 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1418
1419 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1420
1421 iwlagn_mac_unregister(priv);
1422
1423 iwl_tt_exit(priv);
1424
1425 kfree(priv->eeprom_blob);
1426 iwl_free_nvm_data(priv->nvm_data);
1427
1428 /*netif_stop_queue(dev); */
1429 flush_workqueue(priv->workqueue);
1430
1431 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1432 * priv->workqueue... so we can't take down the workqueue
1433 * until now... */
1434 destroy_workqueue(priv->workqueue);
1435 priv->workqueue = NULL;
1436
1437 iwl_uninit_drv(priv);
1438
1439 dev_kfree_skb(priv->beacon_skb);
1440
1441 iwl_trans_op_mode_leave(priv->trans);
1442 ieee80211_free_hw(priv->hw);
1443 }
1444
1445 static const char * const desc_lookup_text[] = {
1446 "OK",
1447 "FAIL",
1448 "BAD_PARAM",
1449 "BAD_CHECKSUM",
1450 "NMI_INTERRUPT_WDG",
1451 "SYSASSERT",
1452 "FATAL_ERROR",
1453 "BAD_COMMAND",
1454 "HW_ERROR_TUNE_LOCK",
1455 "HW_ERROR_TEMPERATURE",
1456 "ILLEGAL_CHAN_FREQ",
1457 "VCC_NOT_STABLE",
1458 "FH_ERROR",
1459 "NMI_INTERRUPT_HOST",
1460 "NMI_INTERRUPT_ACTION_PT",
1461 "NMI_INTERRUPT_UNKNOWN",
1462 "UCODE_VERSION_MISMATCH",
1463 "HW_ERROR_ABS_LOCK",
1464 "HW_ERROR_CAL_LOCK_FAIL",
1465 "NMI_INTERRUPT_INST_ACTION_PT",
1466 "NMI_INTERRUPT_DATA_ACTION_PT",
1467 "NMI_TRM_HW_ER",
1468 "NMI_INTERRUPT_TRM",
1469 "NMI_INTERRUPT_BREAK_POINT",
1470 "DEBUG_0",
1471 "DEBUG_1",
1472 "DEBUG_2",
1473 "DEBUG_3",
1474 };
1475
1476 static struct { char *name; u8 num; } advanced_lookup[] = {
1477 { "NMI_INTERRUPT_WDG", 0x34 },
1478 { "SYSASSERT", 0x35 },
1479 { "UCODE_VERSION_MISMATCH", 0x37 },
1480 { "BAD_COMMAND", 0x38 },
1481 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1482 { "FATAL_ERROR", 0x3D },
1483 { "NMI_TRM_HW_ERR", 0x46 },
1484 { "NMI_INTERRUPT_TRM", 0x4C },
1485 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1486 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1487 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1488 { "NMI_INTERRUPT_HOST", 0x66 },
1489 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1490 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1491 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1492 { "ADVANCED_SYSASSERT", 0 },
1493 };
1494
desc_lookup(u32 num)1495 static const char *desc_lookup(u32 num)
1496 {
1497 int i;
1498 int max = ARRAY_SIZE(desc_lookup_text);
1499
1500 if (num < max)
1501 return desc_lookup_text[num];
1502
1503 max = ARRAY_SIZE(advanced_lookup) - 1;
1504 for (i = 0; i < max; i++) {
1505 if (advanced_lookup[i].num == num)
1506 break;
1507 }
1508 return advanced_lookup[i].name;
1509 }
1510
1511 #define ERROR_START_OFFSET (1 * sizeof(u32))
1512 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1513
iwl_dump_nic_error_log(struct iwl_priv * priv)1514 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1515 {
1516 struct iwl_trans *trans = priv->trans;
1517 u32 base;
1518 struct iwl_error_event_table table;
1519
1520 base = priv->device_pointers.error_event_table;
1521 if (priv->cur_ucode == IWL_UCODE_INIT) {
1522 if (!base)
1523 base = priv->fw->init_errlog_ptr;
1524 } else {
1525 if (!base)
1526 base = priv->fw->inst_errlog_ptr;
1527 }
1528
1529 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1530 IWL_ERR(priv,
1531 "Not valid error log pointer 0x%08X for %s uCode\n",
1532 base,
1533 (priv->cur_ucode == IWL_UCODE_INIT)
1534 ? "Init" : "RT");
1535 return;
1536 }
1537
1538 /*TODO: Update dbgfs with ISR error stats obtained below */
1539 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1540
1541 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1542 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1543 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1544 priv->status, table.valid);
1545 }
1546
1547 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1548 table.data1, table.data2, table.line,
1549 table.blink1, table.blink2, table.ilink1,
1550 table.ilink2, table.bcon_time, table.gp1,
1551 table.gp2, table.gp3, table.ucode_ver,
1552 table.hw_ver, 0, table.brd_ver);
1553 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1554 desc_lookup(table.error_id));
1555 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1556 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1557 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1558 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1559 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1560 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1561 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1562 IWL_ERR(priv, "0x%08X | line\n", table.line);
1563 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1564 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1565 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1566 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1567 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1568 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1569 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1570 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1571 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1572 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1573 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1574 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1575 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1576 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1577 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1578 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1579 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1580 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1581 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1582 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1583 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1584 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1585 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1586 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1587 }
1588
1589 #define EVENT_START_OFFSET (4 * sizeof(u32))
1590
1591 /**
1592 * iwl_print_event_log - Dump error event log to syslog
1593 *
1594 */
iwl_print_event_log(struct iwl_priv * priv,u32 start_idx,u32 num_events,u32 mode,int pos,char ** buf,size_t bufsz)1595 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1596 u32 num_events, u32 mode,
1597 int pos, char **buf, size_t bufsz)
1598 {
1599 u32 i;
1600 u32 base; /* SRAM byte address of event log header */
1601 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1602 u32 ptr; /* SRAM byte address of log data */
1603 u32 ev, time, data; /* event log data */
1604 unsigned long reg_flags;
1605
1606 struct iwl_trans *trans = priv->trans;
1607
1608 if (num_events == 0)
1609 return pos;
1610
1611 base = priv->device_pointers.log_event_table;
1612 if (priv->cur_ucode == IWL_UCODE_INIT) {
1613 if (!base)
1614 base = priv->fw->init_evtlog_ptr;
1615 } else {
1616 if (!base)
1617 base = priv->fw->inst_evtlog_ptr;
1618 }
1619
1620 if (mode == 0)
1621 event_size = 2 * sizeof(u32);
1622 else
1623 event_size = 3 * sizeof(u32);
1624
1625 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1626
1627 /* Make sure device is powered up for SRAM reads */
1628 if (!iwl_trans_grab_nic_access(trans, false, ®_flags))
1629 return pos;
1630
1631 /* Set starting address; reads will auto-increment */
1632 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1633
1634 /* "time" is actually "data" for mode 0 (no timestamp).
1635 * place event id # at far right for easier visual parsing. */
1636 for (i = 0; i < num_events; i++) {
1637 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1638 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1639 if (mode == 0) {
1640 /* data, ev */
1641 if (bufsz) {
1642 pos += scnprintf(*buf + pos, bufsz - pos,
1643 "EVT_LOG:0x%08x:%04u\n",
1644 time, ev);
1645 } else {
1646 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1647 time, ev);
1648 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1649 time, ev);
1650 }
1651 } else {
1652 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1653 if (bufsz) {
1654 pos += scnprintf(*buf + pos, bufsz - pos,
1655 "EVT_LOGT:%010u:0x%08x:%04u\n",
1656 time, data, ev);
1657 } else {
1658 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1659 time, data, ev);
1660 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1661 data, ev);
1662 }
1663 }
1664 }
1665
1666 /* Allow device to power down */
1667 iwl_trans_release_nic_access(trans, ®_flags);
1668 return pos;
1669 }
1670
1671 /**
1672 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1673 */
iwl_print_last_event_logs(struct iwl_priv * priv,u32 capacity,u32 num_wraps,u32 next_entry,u32 size,u32 mode,int pos,char ** buf,size_t bufsz)1674 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1675 u32 num_wraps, u32 next_entry,
1676 u32 size, u32 mode,
1677 int pos, char **buf, size_t bufsz)
1678 {
1679 /*
1680 * display the newest DEFAULT_LOG_ENTRIES entries
1681 * i.e the entries just before the next ont that uCode would fill.
1682 */
1683 if (num_wraps) {
1684 if (next_entry < size) {
1685 pos = iwl_print_event_log(priv,
1686 capacity - (size - next_entry),
1687 size - next_entry, mode,
1688 pos, buf, bufsz);
1689 pos = iwl_print_event_log(priv, 0,
1690 next_entry, mode,
1691 pos, buf, bufsz);
1692 } else
1693 pos = iwl_print_event_log(priv, next_entry - size,
1694 size, mode, pos, buf, bufsz);
1695 } else {
1696 if (next_entry < size) {
1697 pos = iwl_print_event_log(priv, 0, next_entry,
1698 mode, pos, buf, bufsz);
1699 } else {
1700 pos = iwl_print_event_log(priv, next_entry - size,
1701 size, mode, pos, buf, bufsz);
1702 }
1703 }
1704 return pos;
1705 }
1706
1707 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1708
iwl_dump_nic_event_log(struct iwl_priv * priv,bool full_log,char ** buf)1709 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1710 char **buf)
1711 {
1712 u32 base; /* SRAM byte address of event log header */
1713 u32 capacity; /* event log capacity in # entries */
1714 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1715 u32 num_wraps; /* # times uCode wrapped to top of log */
1716 u32 next_entry; /* index of next entry to be written by uCode */
1717 u32 size; /* # entries that we'll print */
1718 u32 logsize;
1719 int pos = 0;
1720 size_t bufsz = 0;
1721 struct iwl_trans *trans = priv->trans;
1722
1723 base = priv->device_pointers.log_event_table;
1724 if (priv->cur_ucode == IWL_UCODE_INIT) {
1725 logsize = priv->fw->init_evtlog_size;
1726 if (!base)
1727 base = priv->fw->init_evtlog_ptr;
1728 } else {
1729 logsize = priv->fw->inst_evtlog_size;
1730 if (!base)
1731 base = priv->fw->inst_evtlog_ptr;
1732 }
1733
1734 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1735 IWL_ERR(priv,
1736 "Invalid event log pointer 0x%08X for %s uCode\n",
1737 base,
1738 (priv->cur_ucode == IWL_UCODE_INIT)
1739 ? "Init" : "RT");
1740 return -EINVAL;
1741 }
1742
1743 /* event log header */
1744 capacity = iwl_trans_read_mem32(trans, base);
1745 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1746 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1747 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1748
1749 if (capacity > logsize) {
1750 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1751 "entries\n", capacity, logsize);
1752 capacity = logsize;
1753 }
1754
1755 if (next_entry > logsize) {
1756 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1757 next_entry, logsize);
1758 next_entry = logsize;
1759 }
1760
1761 size = num_wraps ? capacity : next_entry;
1762
1763 /* bail out if nothing in log */
1764 if (size == 0) {
1765 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1766 return pos;
1767 }
1768
1769 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1770 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1771 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1772 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1773 size);
1774
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1776 if (buf) {
1777 if (full_log)
1778 bufsz = capacity * 48;
1779 else
1780 bufsz = size * 48;
1781 *buf = kmalloc(bufsz, GFP_KERNEL);
1782 if (!*buf)
1783 return -ENOMEM;
1784 }
1785 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1786 /*
1787 * if uCode has wrapped back to top of log,
1788 * start at the oldest entry,
1789 * i.e the next one that uCode would fill.
1790 */
1791 if (num_wraps)
1792 pos = iwl_print_event_log(priv, next_entry,
1793 capacity - next_entry, mode,
1794 pos, buf, bufsz);
1795 /* (then/else) start at top of log */
1796 pos = iwl_print_event_log(priv, 0,
1797 next_entry, mode, pos, buf, bufsz);
1798 } else
1799 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1800 next_entry, size, mode,
1801 pos, buf, bufsz);
1802 #else
1803 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1804 next_entry, size, mode,
1805 pos, buf, bufsz);
1806 #endif
1807 return pos;
1808 }
1809
iwlagn_fw_error(struct iwl_priv * priv,bool ondemand)1810 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1811 {
1812 unsigned int reload_msec;
1813 unsigned long reload_jiffies;
1814
1815 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1816 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1817
1818 /* uCode is no longer loaded. */
1819 priv->ucode_loaded = false;
1820
1821 /* Set the FW error flag -- cleared on iwl_down */
1822 set_bit(STATUS_FW_ERROR, &priv->status);
1823
1824 iwl_abort_notification_waits(&priv->notif_wait);
1825
1826 /* Keep the restart process from trying to send host
1827 * commands by clearing the ready bit */
1828 clear_bit(STATUS_READY, &priv->status);
1829
1830 if (!ondemand) {
1831 /*
1832 * If firmware keep reloading, then it indicate something
1833 * serious wrong and firmware having problem to recover
1834 * from it. Instead of keep trying which will fill the syslog
1835 * and hang the system, let's just stop it
1836 */
1837 reload_jiffies = jiffies;
1838 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1839 (long) priv->reload_jiffies);
1840 priv->reload_jiffies = reload_jiffies;
1841 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1842 priv->reload_count++;
1843 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1844 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1845 return;
1846 }
1847 } else
1848 priv->reload_count = 0;
1849 }
1850
1851 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1852 if (iwlwifi_mod_params.restart_fw) {
1853 IWL_DEBUG_FW_ERRORS(priv,
1854 "Restarting adapter due to uCode error.\n");
1855 queue_work(priv->workqueue, &priv->restart);
1856 } else
1857 IWL_DEBUG_FW_ERRORS(priv,
1858 "Detected FW error, but not restarting\n");
1859 }
1860 }
1861
iwl_nic_error(struct iwl_op_mode * op_mode)1862 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1863 {
1864 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1865
1866 IWL_ERR(priv, "Loaded firmware version: %s\n",
1867 priv->fw->fw_version);
1868
1869 iwl_dump_nic_error_log(priv);
1870 iwl_dump_nic_event_log(priv, false, NULL);
1871
1872 iwlagn_fw_error(priv, false);
1873 }
1874
iwl_cmd_queue_full(struct iwl_op_mode * op_mode)1875 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1876 {
1877 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1878
1879 if (!iwl_check_for_ct_kill(priv)) {
1880 IWL_ERR(priv, "Restarting adapter queue is full\n");
1881 iwlagn_fw_error(priv, false);
1882 }
1883 }
1884
1885 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3
1886
iwl_nic_config(struct iwl_op_mode * op_mode)1887 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1888 {
1889 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1890
1891 /* SKU Control */
1892 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1893 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1894 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1895 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1896 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1897 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1898 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1899
1900 /* write radio config values to register */
1901 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1902 u32 reg_val =
1903 priv->nvm_data->radio_cfg_type <<
1904 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1905 priv->nvm_data->radio_cfg_step <<
1906 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1907 priv->nvm_data->radio_cfg_dash <<
1908 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1909
1910 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1911 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1912 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1913 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1914 reg_val);
1915
1916 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
1917 priv->nvm_data->radio_cfg_type,
1918 priv->nvm_data->radio_cfg_step,
1919 priv->nvm_data->radio_cfg_dash);
1920 } else {
1921 WARN_ON(1);
1922 }
1923
1924 /* set CSR_HW_CONFIG_REG for uCode use */
1925 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
1926 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
1927 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
1928
1929 /* W/A : NIC is stuck in a reset state after Early PCIe power off
1930 * (PCIe power is lost before PERST# is asserted),
1931 * causing ME FW to lose ownership and not being able to obtain it back.
1932 */
1933 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
1934 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
1935 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
1936
1937 if (priv->lib->nic_config)
1938 priv->lib->nic_config(priv);
1939 }
1940
iwl_wimax_active(struct iwl_op_mode * op_mode)1941 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
1942 {
1943 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1944
1945 clear_bit(STATUS_READY, &priv->status);
1946 IWL_ERR(priv, "RF is used by WiMAX\n");
1947 }
1948
iwl_stop_sw_queue(struct iwl_op_mode * op_mode,int queue)1949 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
1950 {
1951 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1952 int mq = priv->queue_to_mac80211[queue];
1953
1954 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1955 return;
1956
1957 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
1958 IWL_DEBUG_TX_QUEUES(priv,
1959 "queue %d (mac80211 %d) already stopped\n",
1960 queue, mq);
1961 return;
1962 }
1963
1964 set_bit(mq, &priv->transport_queue_stop);
1965 ieee80211_stop_queue(priv->hw, mq);
1966 }
1967
iwl_wake_sw_queue(struct iwl_op_mode * op_mode,int queue)1968 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
1969 {
1970 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1971 int mq = priv->queue_to_mac80211[queue];
1972
1973 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1974 return;
1975
1976 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
1977 IWL_DEBUG_TX_QUEUES(priv,
1978 "queue %d (mac80211 %d) already awake\n",
1979 queue, mq);
1980 return;
1981 }
1982
1983 clear_bit(mq, &priv->transport_queue_stop);
1984
1985 if (!priv->passive_no_rx)
1986 ieee80211_wake_queue(priv->hw, mq);
1987 }
1988
iwlagn_lift_passive_no_rx(struct iwl_priv * priv)1989 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
1990 {
1991 int mq;
1992
1993 if (!priv->passive_no_rx)
1994 return;
1995
1996 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
1997 if (!test_bit(mq, &priv->transport_queue_stop)) {
1998 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
1999 ieee80211_wake_queue(priv->hw, mq);
2000 } else {
2001 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2002 }
2003 }
2004
2005 priv->passive_no_rx = false;
2006 }
2007
iwl_free_skb(struct iwl_op_mode * op_mode,struct sk_buff * skb)2008 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2009 {
2010 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2011 struct ieee80211_tx_info *info;
2012
2013 info = IEEE80211_SKB_CB(skb);
2014 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2015 ieee80211_free_txskb(priv->hw, skb);
2016 }
2017
iwl_set_hw_rfkill_state(struct iwl_op_mode * op_mode,bool state)2018 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2019 {
2020 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2021
2022 if (state)
2023 set_bit(STATUS_RF_KILL_HW, &priv->status);
2024 else
2025 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2026
2027 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2028
2029 return false;
2030 }
2031
iwl_napi_add(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct net_device * napi_dev,int (* poll)(struct napi_struct *,int),int weight)2032 static void iwl_napi_add(struct iwl_op_mode *op_mode,
2033 struct napi_struct *napi,
2034 struct net_device *napi_dev,
2035 int (*poll)(struct napi_struct *, int),
2036 int weight)
2037 {
2038 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2039
2040 ieee80211_napi_add(priv->hw, napi, napi_dev, poll, weight);
2041 }
2042
2043 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2044 .start = iwl_op_mode_dvm_start,
2045 .stop = iwl_op_mode_dvm_stop,
2046 .rx = iwl_rx_dispatch,
2047 .queue_full = iwl_stop_sw_queue,
2048 .queue_not_full = iwl_wake_sw_queue,
2049 .hw_rf_kill = iwl_set_hw_rfkill_state,
2050 .free_skb = iwl_free_skb,
2051 .nic_error = iwl_nic_error,
2052 .cmd_queue_full = iwl_cmd_queue_full,
2053 .nic_config = iwl_nic_config,
2054 .wimax_active = iwl_wimax_active,
2055 .napi_add = iwl_napi_add,
2056 };
2057
2058 /*****************************************************************************
2059 *
2060 * driver and module entry point
2061 *
2062 *****************************************************************************/
iwl_init(void)2063 static int __init iwl_init(void)
2064 {
2065
2066 int ret;
2067
2068 ret = iwlagn_rate_control_register();
2069 if (ret) {
2070 pr_err("Unable to register rate control algorithm: %d\n", ret);
2071 return ret;
2072 }
2073
2074 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2075 if (ret) {
2076 pr_err("Unable to register op_mode: %d\n", ret);
2077 iwlagn_rate_control_unregister();
2078 }
2079
2080 return ret;
2081 }
2082 module_init(iwl_init);
2083
iwl_exit(void)2084 static void __exit iwl_exit(void)
2085 {
2086 iwl_opmode_deregister("iwldvm");
2087 iwlagn_rate_control_unregister();
2088 }
2089 module_exit(iwl_exit);
2090