1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
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.
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
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
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
43 #include <net/mac80211.h>
45 #include <asm/div64.h>
47 #include "iwl-eeprom.h"
51 #include "iwl-agn-calib.h"
53 #include "iwl-shared.h"
54 #include "iwl-trans.h"
55 #include "iwl-op-mode.h"
57 /******************************************************************************
61 ******************************************************************************/
64 * module name, copyright, version, etc.
66 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68 #ifdef CONFIG_IWLWIFI_DEBUG
74 #define DRV_VERSION IWLWIFI_VERSION VD
77 MODULE_DESCRIPTION(DRV_DESCRIPTION);
78 MODULE_VERSION(DRV_VERSION);
79 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
80 MODULE_LICENSE("GPL");
81 MODULE_ALIAS("iwlagn");
83 void iwl_update_chain_flags(struct iwl_priv *priv)
85 struct iwl_rxon_context *ctx;
87 for_each_context(priv, ctx) {
88 iwlagn_set_rxon_chain(priv, ctx);
89 if (ctx->active.rx_chain != ctx->staging.rx_chain)
90 iwlagn_commit_rxon(priv, ctx);
94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
96 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
100 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
103 * The index is relative to frame start but we start looking at the
104 * variable-length part of the beacon.
106 tim_idx = mgmt->u.beacon.variable - beacon;
108 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
109 while ((tim_idx < (frame_size - 2)) &&
110 (beacon[tim_idx] != WLAN_EID_TIM))
111 tim_idx += beacon[tim_idx+1] + 2;
113 /* If TIM field was found, set variables */
114 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
115 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
116 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
118 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
128 struct ieee80211_tx_info *info;
134 * We have to set up the TX command, the TX Beacon command, and the
138 lockdep_assert_held(&priv->mutex);
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
145 if (WARN_ON(!priv->beacon_skb))
148 /* Allocate beacon command */
149 if (!priv->beacon_cmd)
150 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
151 tx_beacon_cmd = priv->beacon_cmd;
155 frame_size = priv->beacon_skb->len;
157 /* Set up TX command fields */
158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
160 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
161 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
162 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
164 /* Set up TX beacon command fields */
165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
168 /* Set up packet rate and flags */
169 info = IEEE80211_SKB_CB(priv->beacon_skb);
172 * Let's set up the rate at least somewhat correctly;
173 * it will currently not actually be used by the uCode,
174 * it uses the broadcast station's rate instead.
176 if (info->control.rates[0].idx < 0 ||
177 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
180 rate = info->control.rates[0].idx;
182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
183 priv->hw_params.valid_tx_ant);
184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
186 /* In mac80211, rates for 5 GHz start at 0 */
187 if (info->band == IEEE80211_BAND_5GHZ)
188 rate += IWL_FIRST_OFDM_RATE;
189 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
190 rate_flags |= RATE_MCS_CCK_MSK;
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
196 cmd.len[0] = sizeof(*tx_beacon_cmd);
197 cmd.data[0] = tx_beacon_cmd;
198 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
199 cmd.len[1] = frame_size;
200 cmd.data[1] = priv->beacon_skb->data;
201 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
203 return iwl_dvm_send_cmd(priv, &cmd);
206 static void iwl_bg_beacon_update(struct work_struct *work)
208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
210 struct sk_buff *beacon;
212 mutex_lock(&priv->mutex);
213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
218 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
220 * The ucode will send beacon notifications even in
221 * IBSS mode, but we don't want to process them. But
222 * we need to defer the type check to here due to
223 * requiring locking around the beacon_ctx access.
228 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
229 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
235 /* new beacon skb is allocated every time; dispose previous.*/
236 dev_kfree_skb(priv->beacon_skb);
238 priv->beacon_skb = beacon;
240 iwlagn_send_beacon_cmd(priv);
242 mutex_unlock(&priv->mutex);
245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
247 struct iwl_priv *priv =
248 container_of(work, struct iwl_priv, bt_runtime_config);
250 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
253 /* dont send host command if rf-kill is on */
254 if (!iwl_is_ready_rf(priv))
256 iwlagn_send_advance_bt_config(priv);
259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
261 struct iwl_priv *priv =
262 container_of(work, struct iwl_priv, bt_full_concurrency);
263 struct iwl_rxon_context *ctx;
265 mutex_lock(&priv->mutex);
267 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
270 /* dont send host command if rf-kill is on */
271 if (!iwl_is_ready_rf(priv))
274 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
275 priv->bt_full_concurrent ?
276 "full concurrency" : "3-wire");
279 * LQ & RXON updated cmds must be sent before BT Config cmd
280 * to avoid 3-wire collisions
282 for_each_context(priv, ctx) {
283 iwlagn_set_rxon_chain(priv, ctx);
284 iwlagn_commit_rxon(priv, ctx);
287 iwlagn_send_advance_bt_config(priv);
289 mutex_unlock(&priv->mutex);
292 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
294 struct iwl_statistics_cmd statistics_cmd = {
295 .configuration_flags =
296 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
299 if (flags & CMD_ASYNC)
300 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
302 sizeof(struct iwl_statistics_cmd),
305 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
307 sizeof(struct iwl_statistics_cmd),
312 * iwl_bg_statistics_periodic - Timer callback to queue statistics
314 * This callback is provided in order to send a statistics request.
316 * This timer function is continually reset to execute within
317 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
318 * was received. We need to ensure we receive the statistics in order
319 * to update the temperature used for calibrating the TXPOWER.
321 static void iwl_bg_statistics_periodic(unsigned long data)
323 struct iwl_priv *priv = (struct iwl_priv *)data;
325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
328 /* dont send host command if rf-kill is on */
329 if (!iwl_is_ready_rf(priv))
332 iwl_send_statistics_request(priv, CMD_ASYNC, false);
336 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
337 u32 start_idx, u32 num_events,
338 u32 capacity, u32 mode)
341 u32 ptr; /* SRAM byte address of log data */
342 u32 ev, time, data; /* event log data */
343 unsigned long reg_flags;
346 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
348 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
350 /* Make sure device is powered up for SRAM reads */
351 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
352 if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
353 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
357 /* Set starting address; reads will auto-increment */
358 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
361 * Refuse to read more than would have fit into the log from
362 * the current start_idx. This used to happen due to the race
363 * described below, but now WARN because the code below should
364 * prevent it from happening here.
366 if (WARN_ON(num_events > capacity - start_idx))
367 num_events = capacity - start_idx;
370 * "time" is actually "data" for mode 0 (no timestamp).
371 * place event id # at far right for easier visual parsing.
373 for (i = 0; i < num_events; i++) {
374 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
375 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
377 trace_iwlwifi_dev_ucode_cont_event(
378 trans(priv)->dev, 0, time, ev);
380 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
381 trace_iwlwifi_dev_ucode_cont_event(
382 trans(priv)->dev, time, data, ev);
385 /* Allow device to power down */
386 iwl_release_nic_access(trans(priv));
387 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
390 static void iwl_continuous_event_trace(struct iwl_priv *priv)
392 u32 capacity; /* event log capacity in # entries */
399 u32 base; /* SRAM byte address of event log header */
400 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
401 u32 num_wraps; /* # times uCode wrapped to top of log */
402 u32 next_entry; /* index of next entry to be written by uCode */
404 base = priv->device_pointers.log_event_table;
405 if (iwlagn_hw_valid_rtc_data_addr(base)) {
406 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
408 capacity = read.capacity;
410 num_wraps = read.wrap_counter;
411 next_entry = read.write_counter;
416 * Unfortunately, the uCode doesn't use temporary variables.
417 * Therefore, it can happen that we read next_entry == capacity,
418 * which really means next_entry == 0.
420 if (unlikely(next_entry == capacity))
423 * Additionally, the uCode increases the write pointer before
424 * the wraps counter, so if the write pointer is smaller than
425 * the old write pointer (wrap occurred) but we read that no
426 * wrap occurred, we actually read between the next_entry and
427 * num_wraps update (this does happen in practice!!) -- take
428 * that into account by increasing num_wraps.
430 if (unlikely(next_entry < priv->event_log.next_entry &&
431 num_wraps == priv->event_log.num_wraps))
434 if (num_wraps == priv->event_log.num_wraps) {
435 iwl_print_cont_event_trace(
436 priv, base, priv->event_log.next_entry,
437 next_entry - priv->event_log.next_entry,
440 priv->event_log.non_wraps_count++;
442 if (num_wraps - priv->event_log.num_wraps > 1)
443 priv->event_log.wraps_more_count++;
445 priv->event_log.wraps_once_count++;
447 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
448 num_wraps - priv->event_log.num_wraps,
449 next_entry, priv->event_log.next_entry);
451 if (next_entry < priv->event_log.next_entry) {
452 iwl_print_cont_event_trace(
453 priv, base, priv->event_log.next_entry,
454 capacity - priv->event_log.next_entry,
457 iwl_print_cont_event_trace(
458 priv, base, 0, next_entry, capacity, mode);
460 iwl_print_cont_event_trace(
461 priv, base, next_entry,
462 capacity - next_entry,
465 iwl_print_cont_event_trace(
466 priv, base, 0, next_entry, capacity, mode);
470 priv->event_log.num_wraps = num_wraps;
471 priv->event_log.next_entry = next_entry;
475 * iwl_bg_ucode_trace - Timer callback to log ucode event
477 * The timer is continually set to execute every
478 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
479 * this function is to perform continuous uCode event logging operation
482 static void iwl_bg_ucode_trace(unsigned long data)
484 struct iwl_priv *priv = (struct iwl_priv *)data;
486 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
489 if (priv->event_log.ucode_trace) {
490 iwl_continuous_event_trace(priv);
491 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
492 mod_timer(&priv->ucode_trace,
493 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
497 static void iwl_bg_tx_flush(struct work_struct *work)
499 struct iwl_priv *priv =
500 container_of(work, struct iwl_priv, tx_flush);
502 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
505 /* do nothing if rf-kill is on */
506 if (!iwl_is_ready_rf(priv))
509 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
510 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
514 * queue/FIFO/AC mapping definitions
517 #define IWL_TX_FIFO_BK 0 /* shared */
518 #define IWL_TX_FIFO_BE 1
519 #define IWL_TX_FIFO_VI 2 /* shared */
520 #define IWL_TX_FIFO_VO 3
521 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
522 #define IWL_TX_FIFO_BE_IPAN 4
523 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
524 #define IWL_TX_FIFO_VO_IPAN 5
525 /* re-uses the VO FIFO, uCode will properly flush/schedule */
526 #define IWL_TX_FIFO_AUX 5
527 #define IWL_TX_FIFO_UNUSED -1
529 #define IWLAGN_CMD_FIFO_NUM 7
532 * This queue number is required for proper operation
533 * because the ucode will stop/start the scheduler as
536 #define IWL_IPAN_MCAST_QUEUE 8
538 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
546 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
560 static const u8 iwlagn_bss_ac_to_fifo[] = {
567 static const u8 iwlagn_bss_ac_to_queue[] = {
571 static const u8 iwlagn_pan_ac_to_fifo[] = {
578 static const u8 iwlagn_pan_ac_to_queue[] = {
582 static const u8 iwlagn_bss_queue_to_ac[] = {
589 static const u8 iwlagn_pan_queue_to_ac[] = {
600 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
605 * The default context is always valid,
606 * the PAN context depends on uCode.
608 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
609 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
610 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
612 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
613 priv->contexts[i].ctxid = i;
615 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
616 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
617 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
618 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
619 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
620 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
621 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
622 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
623 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
624 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
625 BIT(NL80211_IFTYPE_ADHOC);
626 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
627 BIT(NL80211_IFTYPE_STATION);
628 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
629 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
630 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
631 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
632 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
633 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
634 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
635 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
637 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
638 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
639 REPLY_WIPAN_RXON_TIMING;
640 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
641 REPLY_WIPAN_RXON_ASSOC;
642 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
643 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
644 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
645 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
646 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
647 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
648 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
650 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
651 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
652 BIT(NL80211_IFTYPE_P2P_CLIENT) |
653 BIT(NL80211_IFTYPE_P2P_GO);
655 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
656 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
657 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
658 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
659 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
660 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
661 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
662 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
664 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
667 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
669 struct iwl_ct_kill_config cmd;
670 struct iwl_ct_kill_throttling_config adv_cmd;
673 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
674 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
676 priv->thermal_throttle.ct_kill_toggle = false;
678 if (cfg(priv)->base_params->support_ct_kill_exit) {
679 adv_cmd.critical_temperature_enter =
680 cpu_to_le32(priv->hw_params.ct_kill_threshold);
681 adv_cmd.critical_temperature_exit =
682 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
684 ret = iwl_dvm_send_cmd_pdu(priv,
685 REPLY_CT_KILL_CONFIG_CMD,
686 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
688 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
690 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
691 "succeeded, critical temperature enter is %d,"
693 priv->hw_params.ct_kill_threshold,
694 priv->hw_params.ct_kill_exit_threshold);
696 cmd.critical_temperature_R =
697 cpu_to_le32(priv->hw_params.ct_kill_threshold);
699 ret = iwl_dvm_send_cmd_pdu(priv,
700 REPLY_CT_KILL_CONFIG_CMD,
701 CMD_SYNC, sizeof(cmd), &cmd);
703 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
705 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
707 "critical temperature is %d\n",
708 priv->hw_params.ct_kill_threshold);
712 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
714 struct iwl_calib_cfg_cmd calib_cfg_cmd;
715 struct iwl_host_cmd cmd = {
716 .id = CALIBRATION_CFG_CMD,
717 .len = { sizeof(struct iwl_calib_cfg_cmd), },
718 .data = { &calib_cfg_cmd, },
721 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
722 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
723 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
725 return iwl_dvm_send_cmd(priv, &cmd);
729 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
731 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
732 .valid = cpu_to_le32(valid_tx_ant),
735 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
736 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
737 return iwl_dvm_send_cmd_pdu(priv,
738 TX_ANT_CONFIGURATION_CMD,
740 sizeof(struct iwl_tx_ant_config_cmd),
743 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
748 void iwl_send_bt_config(struct iwl_priv *priv)
750 struct iwl_bt_cmd bt_cmd = {
751 .lead_time = BT_LEAD_TIME_DEF,
752 .max_kill = BT_MAX_KILL_DEF,
757 if (!iwlagn_mod_params.bt_coex_active)
758 bt_cmd.flags = BT_COEX_DISABLE;
760 bt_cmd.flags = BT_COEX_ENABLE;
762 priv->bt_enable_flag = bt_cmd.flags;
763 IWL_DEBUG_INFO(priv, "BT coex %s\n",
764 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
766 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
767 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
768 IWL_ERR(priv, "failed to send BT Coex Config\n");
772 * iwl_alive_start - called after REPLY_ALIVE notification received
773 * from protocol/runtime uCode (initialization uCode's
774 * Alive gets handled by iwl_init_alive_start()).
776 int iwl_alive_start(struct iwl_priv *priv)
779 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
781 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
783 /* After the ALIVE response, we can send host commands to the uCode */
784 set_bit(STATUS_ALIVE, &priv->status);
786 if (iwl_is_rfkill(priv))
789 if (priv->event_log.ucode_trace) {
790 /* start collecting data now */
791 mod_timer(&priv->ucode_trace, jiffies);
794 /* download priority table before any calibration request */
795 if (cfg(priv)->bt_params &&
796 cfg(priv)->bt_params->advanced_bt_coexist) {
797 /* Configure Bluetooth device coexistence support */
798 if (cfg(priv)->bt_params->bt_sco_disable)
799 priv->bt_enable_pspoll = false;
801 priv->bt_enable_pspoll = true;
803 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
804 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
805 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
806 iwlagn_send_advance_bt_config(priv);
807 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
808 priv->cur_rssi_ctx = NULL;
810 iwl_send_prio_tbl(priv);
812 /* FIXME: w/a to force change uCode BT state machine */
813 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
814 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
817 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
818 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
823 * default is 2-wire BT coexexistence support
825 iwl_send_bt_config(priv);
829 * Perform runtime calibrations, including DC calibration.
831 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
833 ieee80211_wake_queues(priv->hw);
835 /* Configure Tx antenna selection based on H/W config */
836 iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant);
838 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
839 struct iwl_rxon_cmd *active_rxon =
840 (struct iwl_rxon_cmd *)&ctx->active;
841 /* apply any changes in staging */
842 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
843 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
845 struct iwl_rxon_context *tmp;
846 /* Initialize our rx_config data */
847 for_each_context(priv, tmp)
848 iwl_connection_init_rx_config(priv, tmp);
850 iwlagn_set_rxon_chain(priv, ctx);
854 /* WoWLAN ucode will not reply in the same way, skip it */
855 iwl_reset_run_time_calib(priv);
858 set_bit(STATUS_READY, &priv->status);
860 /* Configure the adapter for unassociated operation */
861 ret = iwlagn_commit_rxon(priv, ctx);
865 /* At this point, the NIC is initialized and operational */
866 iwl_rf_kill_ct_config(priv);
868 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
870 return iwl_power_update_mode(priv, true);
874 * iwl_clear_driver_stations - clear knowledge of all stations from driver
875 * @priv: iwl priv struct
877 * This is called during iwl_down() to make sure that in the case
878 * we're coming there from a hardware restart mac80211 will be
879 * able to reconfigure stations -- if we're getting there in the
880 * normal down flow then the stations will already be cleared.
882 static void iwl_clear_driver_stations(struct iwl_priv *priv)
884 struct iwl_rxon_context *ctx;
886 spin_lock_bh(&priv->sta_lock);
887 memset(priv->stations, 0, sizeof(priv->stations));
888 priv->num_stations = 0;
890 priv->ucode_key_table = 0;
892 for_each_context(priv, ctx) {
894 * Remove all key information that is not stored as part
895 * of station information since mac80211 may not have had
896 * a chance to remove all the keys. When device is
897 * reconfigured by mac80211 after an error all keys will
900 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
901 ctx->key_mapping_keys = 0;
904 spin_unlock_bh(&priv->sta_lock);
907 void iwl_down(struct iwl_priv *priv)
911 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
913 lockdep_assert_held(&priv->mutex);
915 iwl_scan_cancel_timeout(priv, 200);
918 * If active, scanning won't cancel it, so say it expired.
919 * No race since we hold the mutex here and a new one
920 * can't come in at this time.
922 ieee80211_remain_on_channel_expired(priv->hw);
925 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
927 iwl_clear_ucode_stations(priv, NULL);
928 iwl_dealloc_bcast_stations(priv);
929 iwl_clear_driver_stations(priv);
931 /* reset BT coex data */
933 priv->cur_rssi_ctx = NULL;
935 if (cfg(priv)->bt_params)
936 priv->bt_traffic_load =
937 cfg(priv)->bt_params->bt_init_traffic_load;
939 priv->bt_traffic_load = 0;
940 priv->bt_full_concurrent = false;
941 priv->bt_ci_compliance = 0;
943 /* Wipe out the EXIT_PENDING status bit if we are not actually
944 * exiting the module */
946 clear_bit(STATUS_EXIT_PENDING, &priv->status);
948 if (priv->mac80211_registered)
949 ieee80211_stop_queues(priv->hw);
951 priv->ucode_loaded = false;
952 iwl_trans_stop_device(trans(priv));
954 /* Clear out all status bits but a few that are stable across reset */
955 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
957 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
958 STATUS_GEO_CONFIGURED |
959 test_bit(STATUS_FW_ERROR, &priv->status) <<
961 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
964 dev_kfree_skb(priv->beacon_skb);
965 priv->beacon_skb = NULL;
968 /*****************************************************************************
970 * Workqueue callbacks
972 *****************************************************************************/
974 static void iwl_bg_run_time_calib_work(struct work_struct *work)
976 struct iwl_priv *priv = container_of(work, struct iwl_priv,
977 run_time_calib_work);
979 mutex_lock(&priv->mutex);
981 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
982 test_bit(STATUS_SCANNING, &priv->status)) {
983 mutex_unlock(&priv->mutex);
987 if (priv->start_calib) {
988 iwl_chain_noise_calibration(priv);
989 iwl_sensitivity_calibration(priv);
992 mutex_unlock(&priv->mutex);
995 void iwlagn_prepare_restart(struct iwl_priv *priv)
997 struct iwl_rxon_context *ctx;
998 bool bt_full_concurrent;
1005 lockdep_assert_held(&priv->mutex);
1007 for_each_context(priv, ctx)
1012 * __iwl_down() will clear the BT status variables,
1013 * which is correct, but when we restart we really
1014 * want to keep them so restore them afterwards.
1016 * The restart process will later pick them up and
1017 * re-configure the hw when we reconfigure the BT
1020 bt_full_concurrent = priv->bt_full_concurrent;
1021 bt_ci_compliance = priv->bt_ci_compliance;
1022 bt_load = priv->bt_traffic_load;
1023 bt_status = priv->bt_status;
1024 bt_is_sco = priv->bt_is_sco;
1028 priv->bt_full_concurrent = bt_full_concurrent;
1029 priv->bt_ci_compliance = bt_ci_compliance;
1030 priv->bt_traffic_load = bt_load;
1031 priv->bt_status = bt_status;
1032 priv->bt_is_sco = bt_is_sco;
1034 /* reset all queues */
1035 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1036 atomic_set(&priv->ac_stop_count[i], 0);
1038 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1039 priv->queue_to_ac[i] = IWL_INVALID_AC;
1041 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1044 static void iwl_bg_restart(struct work_struct *data)
1046 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1048 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1051 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1052 mutex_lock(&priv->mutex);
1053 iwlagn_prepare_restart(priv);
1054 mutex_unlock(&priv->mutex);
1055 iwl_cancel_deferred_work(priv);
1056 ieee80211_restart_hw(priv->hw);
1065 void iwlagn_disable_roc(struct iwl_priv *priv)
1067 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1069 lockdep_assert_held(&priv->mutex);
1071 if (!priv->hw_roc_setup)
1074 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1075 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1077 priv->hw_roc_channel = NULL;
1079 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1081 iwlagn_commit_rxon(priv, ctx);
1083 ctx->is_active = false;
1084 priv->hw_roc_setup = false;
1087 static void iwlagn_disable_roc_work(struct work_struct *work)
1089 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1090 hw_roc_disable_work.work);
1092 mutex_lock(&priv->mutex);
1093 iwlagn_disable_roc(priv);
1094 mutex_unlock(&priv->mutex);
1097 /*****************************************************************************
1099 * driver setup and teardown
1101 *****************************************************************************/
1103 void iwl_setup_deferred_work(struct iwl_priv *priv)
1105 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1107 INIT_WORK(&priv->restart, iwl_bg_restart);
1108 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1109 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1110 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1111 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1112 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1113 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1114 iwlagn_disable_roc_work);
1116 iwl_setup_scan_deferred_work(priv);
1118 if (cfg(priv)->bt_params)
1119 iwlagn_bt_setup_deferred_work(priv);
1121 init_timer(&priv->statistics_periodic);
1122 priv->statistics_periodic.data = (unsigned long)priv;
1123 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1125 init_timer(&priv->ucode_trace);
1126 priv->ucode_trace.data = (unsigned long)priv;
1127 priv->ucode_trace.function = iwl_bg_ucode_trace;
1130 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1132 if (cfg(priv)->bt_params)
1133 iwlagn_bt_cancel_deferred_work(priv);
1135 cancel_work_sync(&priv->run_time_calib_work);
1136 cancel_work_sync(&priv->beacon_update);
1138 iwl_cancel_scan_deferred_work(priv);
1140 cancel_work_sync(&priv->bt_full_concurrency);
1141 cancel_work_sync(&priv->bt_runtime_config);
1142 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1144 del_timer_sync(&priv->statistics_periodic);
1145 del_timer_sync(&priv->ucode_trace);
1148 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1152 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1153 rates[i].bitrate = iwl_rates[i].ieee * 5;
1154 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1155 rates[i].hw_value_short = i;
1157 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1159 * If CCK != 1M then set short preamble rate flag.
1162 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1163 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1168 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1169 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1170 static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1171 struct ieee80211_sta_ht_cap *ht_info,
1172 enum ieee80211_band band)
1174 u16 max_bit_rate = 0;
1175 u8 rx_chains_num = priv->hw_params.rx_chains_num;
1176 u8 tx_chains_num = priv->hw_params.tx_chains_num;
1179 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1181 ht_info->ht_supported = true;
1183 if (cfg(priv)->ht_params &&
1184 cfg(priv)->ht_params->ht_greenfield_support)
1185 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1186 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1187 max_bit_rate = MAX_BIT_RATE_20_MHZ;
1188 if (priv->hw_params.ht40_channel & BIT(band)) {
1189 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1190 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1191 ht_info->mcs.rx_mask[4] = 0x01;
1192 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1195 if (iwlagn_mod_params.amsdu_size_8K)
1196 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1198 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1199 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1201 ht_info->mcs.rx_mask[0] = 0xFF;
1202 if (rx_chains_num >= 2)
1203 ht_info->mcs.rx_mask[1] = 0xFF;
1204 if (rx_chains_num >= 3)
1205 ht_info->mcs.rx_mask[2] = 0xFF;
1207 /* Highest supported Rx data rate */
1208 max_bit_rate *= rx_chains_num;
1209 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1210 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1212 /* Tx MCS capabilities */
1213 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1214 if (tx_chains_num != rx_chains_num) {
1215 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1216 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1217 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1222 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1224 static int iwl_init_geos(struct iwl_priv *priv)
1226 struct iwl_channel_info *ch;
1227 struct ieee80211_supported_band *sband;
1228 struct ieee80211_channel *channels;
1229 struct ieee80211_channel *geo_ch;
1230 struct ieee80211_rate *rates;
1232 s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1234 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1235 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1236 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1237 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1241 channels = kcalloc(priv->channel_count,
1242 sizeof(struct ieee80211_channel), GFP_KERNEL);
1246 rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1253 /* 5.2GHz channels start after the 2.4GHz channels */
1254 sband = &priv->bands[IEEE80211_BAND_5GHZ];
1255 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1257 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1258 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1260 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1261 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1262 IEEE80211_BAND_5GHZ);
1264 sband = &priv->bands[IEEE80211_BAND_2GHZ];
1265 sband->channels = channels;
1267 sband->bitrates = rates;
1268 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1270 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1271 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1272 IEEE80211_BAND_2GHZ);
1274 priv->ieee_channels = channels;
1275 priv->ieee_rates = rates;
1277 for (i = 0; i < priv->channel_count; i++) {
1278 ch = &priv->channel_info[i];
1280 /* FIXME: might be removed if scan is OK */
1281 if (!is_channel_valid(ch))
1284 sband = &priv->bands[ch->band];
1286 geo_ch = &sband->channels[sband->n_channels++];
1288 geo_ch->center_freq =
1289 ieee80211_channel_to_frequency(ch->channel, ch->band);
1290 geo_ch->max_power = ch->max_power_avg;
1291 geo_ch->max_antenna_gain = 0xff;
1292 geo_ch->hw_value = ch->channel;
1294 if (is_channel_valid(ch)) {
1295 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1296 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1298 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1299 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1301 if (ch->flags & EEPROM_CHANNEL_RADAR)
1302 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1304 geo_ch->flags |= ch->ht40_extension_channel;
1306 if (ch->max_power_avg > max_tx_power)
1307 max_tx_power = ch->max_power_avg;
1309 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1312 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1313 ch->channel, geo_ch->center_freq,
1314 is_channel_a_band(ch) ? "5.2" : "2.4",
1315 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1316 "restricted" : "valid",
1320 priv->tx_power_device_lmt = max_tx_power;
1321 priv->tx_power_user_lmt = max_tx_power;
1322 priv->tx_power_next = max_tx_power;
1324 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
1325 priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) {
1326 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1327 "Please send your %s to maintainer.\n",
1328 trans(priv)->hw_id_str);
1329 priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
1332 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1333 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1334 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1336 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1342 * iwl_free_geos - undo allocations in iwl_init_geos
1344 static void iwl_free_geos(struct iwl_priv *priv)
1346 kfree(priv->ieee_channels);
1347 kfree(priv->ieee_rates);
1348 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1351 int iwl_init_drv(struct iwl_priv *priv)
1355 spin_lock_init(&priv->sta_lock);
1357 mutex_init(&priv->mutex);
1359 INIT_LIST_HEAD(&priv->calib_results);
1361 priv->ieee_channels = NULL;
1362 priv->ieee_rates = NULL;
1363 priv->band = IEEE80211_BAND_2GHZ;
1365 priv->plcp_delta_threshold =
1366 cfg(priv)->base_params->plcp_delta_threshold;
1368 priv->iw_mode = NL80211_IFTYPE_STATION;
1369 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1370 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1371 priv->agg_tids_count = 0;
1373 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1375 priv->rx_statistics_jiffies = jiffies;
1377 /* Choose which receivers/antennas to use */
1378 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1380 iwl_init_scan_params(priv);
1383 if (cfg(priv)->bt_params &&
1384 cfg(priv)->bt_params->advanced_bt_coexist) {
1385 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1386 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1387 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1388 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1389 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1390 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1393 ret = iwl_init_channel_map(priv);
1395 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1399 ret = iwl_init_geos(priv);
1401 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1402 goto err_free_channel_map;
1404 iwl_init_hw_rates(priv->ieee_rates);
1408 err_free_channel_map:
1409 iwl_free_channel_map(priv);
1414 void iwl_uninit_drv(struct iwl_priv *priv)
1416 iwl_free_geos(priv);
1417 iwl_free_channel_map(priv);
1418 kfree(priv->scan_cmd);
1419 kfree(priv->beacon_cmd);
1420 kfree(rcu_dereference_raw(priv->noa_data));
1421 iwl_calib_free_results(priv);
1422 #ifdef CONFIG_IWLWIFI_DEBUGFS
1423 kfree(priv->wowlan_sram);
1427 void iwl_set_hw_params(struct iwl_priv *priv)
1429 if (cfg(priv)->ht_params)
1430 priv->hw_params.use_rts_for_aggregation =
1431 cfg(priv)->ht_params->use_rts_for_aggregation;
1433 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1434 priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1436 /* Device-specific setup */
1437 priv->lib->set_hw_params(priv);
1442 void iwl_debug_config(struct iwl_priv *priv)
1444 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1445 #ifdef CONFIG_IWLWIFI_DEBUG
1450 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1451 #ifdef CONFIG_IWLWIFI_DEBUGFS
1456 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1457 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1463 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1464 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1469 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1470 #ifdef CONFIG_IWLWIFI_P2P
1477 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1478 const struct iwl_fw *fw)
1480 struct iwl_priv *priv;
1481 struct ieee80211_hw *hw;
1482 struct iwl_op_mode *op_mode;
1485 struct iwl_trans_config trans_cfg;
1486 static const u8 no_reclaim_cmds[] = {
1490 REPLY_COMPRESSED_BA,
1491 STATISTICS_NOTIFICATION,
1498 /************************
1499 * 1. Allocating HW data
1500 ************************/
1501 hw = iwl_alloc_all();
1503 pr_err("%s: Cannot allocate network device\n",
1509 op_mode->ops = &iwl_dvm_ops;
1510 priv = IWL_OP_MODE_GET_DVM(op_mode);
1511 priv->shrd = trans->shrd;
1514 switch (cfg(priv)->device_family) {
1515 case IWL_DEVICE_FAMILY_1000:
1516 case IWL_DEVICE_FAMILY_100:
1517 priv->lib = &iwl1000_lib;
1519 case IWL_DEVICE_FAMILY_2000:
1520 case IWL_DEVICE_FAMILY_105:
1521 priv->lib = &iwl2000_lib;
1523 case IWL_DEVICE_FAMILY_2030:
1524 case IWL_DEVICE_FAMILY_135:
1525 priv->lib = &iwl2030_lib;
1527 case IWL_DEVICE_FAMILY_5000:
1528 priv->lib = &iwl5000_lib;
1530 case IWL_DEVICE_FAMILY_5150:
1531 priv->lib = &iwl5150_lib;
1533 case IWL_DEVICE_FAMILY_6000:
1534 case IWL_DEVICE_FAMILY_6005:
1535 case IWL_DEVICE_FAMILY_6000i:
1536 case IWL_DEVICE_FAMILY_6050:
1537 case IWL_DEVICE_FAMILY_6150:
1538 priv->lib = &iwl6000_lib;
1540 case IWL_DEVICE_FAMILY_6030:
1541 priv->lib = &iwl6030_lib;
1547 if (WARN_ON(!priv->lib))
1548 goto out_free_traffic_mem;
1551 * Populate the state variables that the transport layer needs
1554 trans_cfg.op_mode = op_mode;
1555 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1556 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1557 trans_cfg.rx_buf_size_8k = iwlagn_mod_params.amsdu_size_8K;
1558 if (!iwlagn_mod_params.wd_disable)
1559 trans_cfg.queue_watchdog_timeout =
1560 cfg(priv)->base_params->wd_timeout;
1562 trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED;
1563 trans_cfg.command_names = iwl_dvm_cmd_strings;
1565 ucode_flags = fw->ucode_capa.flags;
1567 #ifndef CONFIG_IWLWIFI_P2P
1568 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1571 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1572 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1573 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1574 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1575 trans_cfg.n_queue_to_fifo =
1576 ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1577 q_to_ac = iwlagn_pan_queue_to_ac;
1578 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
1580 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1581 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1582 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1583 trans_cfg.n_queue_to_fifo =
1584 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1585 q_to_ac = iwlagn_bss_queue_to_ac;
1586 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1589 /* Configure transport layer */
1590 iwl_trans_configure(trans(priv), &trans_cfg);
1592 /* At this point both hw and priv are allocated. */
1594 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1596 /* show what debugging capabilities we have */
1597 iwl_debug_config(priv);
1599 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1601 /* is antenna coupling more than 35dB ? */
1602 priv->bt_ant_couple_ok =
1603 (iwlagn_mod_params.ant_coupling >
1604 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1607 /* enable/disable bt channel inhibition */
1608 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1609 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1610 (priv->bt_ch_announce) ? "On" : "Off");
1612 if (iwl_alloc_traffic_mem(priv))
1613 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1615 /* these spin locks will be used in apm_ops.init and EEPROM access
1616 * we should init now
1618 spin_lock_init(&trans(priv)->reg_lock);
1619 spin_lock_init(&priv->statistics.lock);
1621 /***********************
1622 * 2. Read REV register
1623 ***********************/
1624 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1625 cfg(priv)->name, trans(priv)->hw_rev);
1627 if (iwl_trans_start_hw(trans(priv)))
1628 goto out_free_traffic_mem;
1630 /* Read the EEPROM */
1631 if (iwl_eeprom_init(priv, trans(priv)->hw_rev)) {
1632 IWL_ERR(priv, "Unable to init EEPROM\n");
1633 goto out_free_traffic_mem;
1635 /* Reset chip to save power until we load uCode during "up". */
1636 iwl_trans_stop_hw(trans(priv));
1638 if (iwl_eeprom_check_version(priv))
1639 goto out_free_eeprom;
1641 if (iwl_eeprom_init_hw_params(priv))
1642 goto out_free_eeprom;
1644 /* extract MAC Address */
1645 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
1646 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1647 priv->hw->wiphy->addresses = priv->addresses;
1648 priv->hw->wiphy->n_addresses = 1;
1649 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
1651 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1653 priv->addresses[1].addr[5]++;
1654 priv->hw->wiphy->n_addresses++;
1657 /************************
1658 * 4. Setup HW constants
1659 ************************/
1660 iwl_set_hw_params(priv);
1662 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1663 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1664 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1666 * if not PAN, then don't support P2P -- might be a uCode
1667 * packaging bug or due to the eeprom check above
1669 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1670 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1671 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1672 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1673 trans_cfg.n_queue_to_fifo =
1674 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1675 q_to_ac = iwlagn_bss_queue_to_ac;
1676 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1678 /* Configure transport layer again*/
1679 iwl_trans_configure(trans(priv), &trans_cfg);
1682 /*******************
1684 *******************/
1685 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1686 atomic_set(&priv->ac_stop_count[i], 0);
1688 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1690 priv->queue_to_ac[i] = q_to_ac[i];
1692 priv->queue_to_ac[i] = IWL_INVALID_AC;
1695 WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1696 IWLAGN_CMD_FIFO_NUM);
1698 if (iwl_init_drv(priv))
1699 goto out_free_eeprom;
1701 /* At this point both hw and priv are initialized. */
1703 /********************
1705 ********************/
1706 iwl_setup_deferred_work(priv);
1707 iwl_setup_rx_handlers(priv);
1708 iwl_testmode_init(priv);
1710 iwl_power_initialize(priv);
1711 iwl_tt_initialize(priv);
1713 snprintf(priv->hw->wiphy->fw_version,
1714 sizeof(priv->hw->wiphy->fw_version),
1715 "%s", fw->fw_version);
1717 priv->new_scan_threshold_behaviour =
1718 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1720 priv->phy_calib_chain_noise_reset_cmd =
1721 fw->ucode_capa.standard_phy_calibration_size;
1722 priv->phy_calib_chain_noise_gain_cmd =
1723 fw->ucode_capa.standard_phy_calibration_size + 1;
1725 /* initialize all valid contexts */
1726 iwl_init_context(priv, ucode_flags);
1728 /**************************************************
1729 * This is still part of probe() in a sense...
1731 * 7. Setup and register with mac80211 and debugfs
1732 **************************************************/
1733 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1734 goto out_destroy_workqueue;
1736 if (iwl_dbgfs_register(priv, DRV_NAME))
1738 "failed to create debugfs files. Ignoring error\n");
1742 out_destroy_workqueue:
1743 destroy_workqueue(priv->workqueue);
1744 priv->workqueue = NULL;
1745 iwl_uninit_drv(priv);
1747 iwl_eeprom_free(priv);
1748 out_free_traffic_mem:
1749 iwl_free_traffic_mem(priv);
1750 ieee80211_free_hw(priv->hw);
1756 void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1758 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1760 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1762 iwl_dbgfs_unregister(priv);
1764 iwl_testmode_cleanup(priv);
1765 iwlagn_mac_unregister(priv);
1769 /*This will stop the queues, move the device to low power state */
1770 priv->ucode_loaded = false;
1771 iwl_trans_stop_device(trans(priv));
1773 iwl_eeprom_free(priv);
1775 /*netif_stop_queue(dev); */
1776 flush_workqueue(priv->workqueue);
1778 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1779 * priv->workqueue... so we can't take down the workqueue
1781 destroy_workqueue(priv->workqueue);
1782 priv->workqueue = NULL;
1783 iwl_free_traffic_mem(priv);
1785 iwl_uninit_drv(priv);
1787 dev_kfree_skb(priv->beacon_skb);
1789 ieee80211_free_hw(priv->hw);
1792 static const char * const desc_lookup_text[] = {
1797 "NMI_INTERRUPT_WDG",
1801 "HW_ERROR_TUNE_LOCK",
1802 "HW_ERROR_TEMPERATURE",
1803 "ILLEGAL_CHAN_FREQ",
1806 "NMI_INTERRUPT_HOST",
1807 "NMI_INTERRUPT_ACTION_PT",
1808 "NMI_INTERRUPT_UNKNOWN",
1809 "UCODE_VERSION_MISMATCH",
1810 "HW_ERROR_ABS_LOCK",
1811 "HW_ERROR_CAL_LOCK_FAIL",
1812 "NMI_INTERRUPT_INST_ACTION_PT",
1813 "NMI_INTERRUPT_DATA_ACTION_PT",
1815 "NMI_INTERRUPT_TRM",
1816 "NMI_INTERRUPT_BREAK_POINT",
1823 static struct { char *name; u8 num; } advanced_lookup[] = {
1824 { "NMI_INTERRUPT_WDG", 0x34 },
1825 { "SYSASSERT", 0x35 },
1826 { "UCODE_VERSION_MISMATCH", 0x37 },
1827 { "BAD_COMMAND", 0x38 },
1828 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1829 { "FATAL_ERROR", 0x3D },
1830 { "NMI_TRM_HW_ERR", 0x46 },
1831 { "NMI_INTERRUPT_TRM", 0x4C },
1832 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1833 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1834 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1835 { "NMI_INTERRUPT_HOST", 0x66 },
1836 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1837 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1838 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1839 { "ADVANCED_SYSASSERT", 0 },
1842 static const char *desc_lookup(u32 num)
1845 int max = ARRAY_SIZE(desc_lookup_text);
1848 return desc_lookup_text[num];
1850 max = ARRAY_SIZE(advanced_lookup) - 1;
1851 for (i = 0; i < max; i++) {
1852 if (advanced_lookup[i].num == num)
1855 return advanced_lookup[i].name;
1858 #define ERROR_START_OFFSET (1 * sizeof(u32))
1859 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1861 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1863 struct iwl_trans *trans = trans(priv);
1865 struct iwl_error_event_table table;
1867 base = priv->device_pointers.error_event_table;
1868 if (priv->cur_ucode == IWL_UCODE_INIT) {
1870 base = priv->fw->init_errlog_ptr;
1873 base = priv->fw->inst_errlog_ptr;
1876 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1878 "Not valid error log pointer 0x%08X for %s uCode\n",
1880 (priv->cur_ucode == IWL_UCODE_INIT)
1885 /*TODO: Update dbgfs with ISR error stats obtained below */
1886 iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1888 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1889 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1890 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1891 priv->status, table.valid);
1894 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1895 table.data1, table.data2, table.line,
1896 table.blink1, table.blink2, table.ilink1,
1897 table.ilink2, table.bcon_time, table.gp1,
1898 table.gp2, table.gp3, table.ucode_ver,
1899 table.hw_ver, table.brd_ver);
1900 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1901 desc_lookup(table.error_id));
1902 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1903 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1904 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1905 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1906 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1907 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1908 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1909 IWL_ERR(priv, "0x%08X | line\n", table.line);
1910 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1911 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1912 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1913 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1914 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1915 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1916 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1917 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1918 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1919 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1920 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1921 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1922 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1923 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1924 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1925 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1926 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1927 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1928 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1929 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1930 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1931 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1932 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1933 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1936 #define EVENT_START_OFFSET (4 * sizeof(u32))
1939 * iwl_print_event_log - Dump error event log to syslog
1942 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1943 u32 num_events, u32 mode,
1944 int pos, char **buf, size_t bufsz)
1947 u32 base; /* SRAM byte address of event log header */
1948 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1949 u32 ptr; /* SRAM byte address of log data */
1950 u32 ev, time, data; /* event log data */
1951 unsigned long reg_flags;
1953 struct iwl_trans *trans = trans(priv);
1955 if (num_events == 0)
1958 base = priv->device_pointers.log_event_table;
1959 if (priv->cur_ucode == IWL_UCODE_INIT) {
1961 base = priv->fw->init_evtlog_ptr;
1964 base = priv->fw->inst_evtlog_ptr;
1968 event_size = 2 * sizeof(u32);
1970 event_size = 3 * sizeof(u32);
1972 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1974 /* Make sure device is powered up for SRAM reads */
1975 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1976 if (unlikely(!iwl_grab_nic_access(trans)))
1979 /* Set starting address; reads will auto-increment */
1980 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1982 /* "time" is actually "data" for mode 0 (no timestamp).
1983 * place event id # at far right for easier visual parsing. */
1984 for (i = 0; i < num_events; i++) {
1985 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1986 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1990 pos += scnprintf(*buf + pos, bufsz - pos,
1991 "EVT_LOG:0x%08x:%04u\n",
1994 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1996 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2000 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
2002 pos += scnprintf(*buf + pos, bufsz - pos,
2003 "EVT_LOGT:%010u:0x%08x:%04u\n",
2006 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2008 trace_iwlwifi_dev_ucode_event(trans->dev, time,
2014 /* Allow device to power down */
2015 iwl_release_nic_access(trans);
2017 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
2022 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2024 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2025 u32 num_wraps, u32 next_entry,
2027 int pos, char **buf, size_t bufsz)
2030 * display the newest DEFAULT_LOG_ENTRIES entries
2031 * i.e the entries just before the next ont that uCode would fill.
2034 if (next_entry < size) {
2035 pos = iwl_print_event_log(priv,
2036 capacity - (size - next_entry),
2037 size - next_entry, mode,
2039 pos = iwl_print_event_log(priv, 0,
2043 pos = iwl_print_event_log(priv, next_entry - size,
2044 size, mode, pos, buf, bufsz);
2046 if (next_entry < size) {
2047 pos = iwl_print_event_log(priv, 0, next_entry,
2048 mode, pos, buf, bufsz);
2050 pos = iwl_print_event_log(priv, next_entry - size,
2051 size, mode, pos, buf, bufsz);
2057 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2059 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2060 char **buf, bool display)
2062 u32 base; /* SRAM byte address of event log header */
2063 u32 capacity; /* event log capacity in # entries */
2064 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2065 u32 num_wraps; /* # times uCode wrapped to top of log */
2066 u32 next_entry; /* index of next entry to be written by uCode */
2067 u32 size; /* # entries that we'll print */
2071 struct iwl_trans *trans = trans(priv);
2073 base = priv->device_pointers.log_event_table;
2074 if (priv->cur_ucode == IWL_UCODE_INIT) {
2075 logsize = priv->fw->init_evtlog_size;
2077 base = priv->fw->init_evtlog_ptr;
2079 logsize = priv->fw->inst_evtlog_size;
2081 base = priv->fw->inst_evtlog_ptr;
2084 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2086 "Invalid event log pointer 0x%08X for %s uCode\n",
2088 (priv->cur_ucode == IWL_UCODE_INIT)
2093 /* event log header */
2094 capacity = iwl_read_targ_mem(trans, base);
2095 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2096 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2097 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2099 if (capacity > logsize) {
2100 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2101 "entries\n", capacity, logsize);
2105 if (next_entry > logsize) {
2106 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2107 next_entry, logsize);
2108 next_entry = logsize;
2111 size = num_wraps ? capacity : next_entry;
2113 /* bail out if nothing in log */
2115 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2119 #ifdef CONFIG_IWLWIFI_DEBUG
2120 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2121 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2122 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2124 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2125 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2127 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2130 #ifdef CONFIG_IWLWIFI_DEBUG
2133 bufsz = capacity * 48;
2136 *buf = kmalloc(bufsz, GFP_KERNEL);
2140 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2142 * if uCode has wrapped back to top of log,
2143 * start at the oldest entry,
2144 * i.e the next one that uCode would fill.
2147 pos = iwl_print_event_log(priv, next_entry,
2148 capacity - next_entry, mode,
2150 /* (then/else) start at top of log */
2151 pos = iwl_print_event_log(priv, 0,
2152 next_entry, mode, pos, buf, bufsz);
2154 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2155 next_entry, size, mode,
2158 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2159 next_entry, size, mode,
2165 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
2167 unsigned int reload_msec;
2168 unsigned long reload_jiffies;
2170 #ifdef CONFIG_IWLWIFI_DEBUG
2171 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
2172 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
2175 /* uCode is no longer loaded. */
2176 priv->ucode_loaded = false;
2178 /* Set the FW error flag -- cleared on iwl_down */
2179 set_bit(STATUS_FW_ERROR, &priv->status);
2181 iwl_abort_notification_waits(&priv->notif_wait);
2183 /* Keep the restart process from trying to send host
2184 * commands by clearing the ready bit */
2185 clear_bit(STATUS_READY, &priv->status);
2187 wake_up(&trans(priv)->wait_command_queue);
2191 * If firmware keep reloading, then it indicate something
2192 * serious wrong and firmware having problem to recover
2193 * from it. Instead of keep trying which will fill the syslog
2194 * and hang the system, let's just stop it
2196 reload_jiffies = jiffies;
2197 reload_msec = jiffies_to_msecs((long) reload_jiffies -
2198 (long) priv->reload_jiffies);
2199 priv->reload_jiffies = reload_jiffies;
2200 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
2201 priv->reload_count++;
2202 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
2203 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
2207 priv->reload_count = 0;
2210 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2211 if (iwlagn_mod_params.restart_fw) {
2212 IWL_DEBUG_FW_ERRORS(priv,
2213 "Restarting adapter due to uCode error.\n");
2214 queue_work(priv->workqueue, &priv->restart);
2216 IWL_DEBUG_FW_ERRORS(priv,
2217 "Detected FW error, but not restarting\n");
2221 void iwl_nic_error(struct iwl_op_mode *op_mode)
2223 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2225 IWL_ERR(priv, "Loaded firmware version: %s\n",
2226 priv->fw->fw_version);
2228 iwl_dump_nic_error_log(priv);
2229 iwl_dump_nic_event_log(priv, false, NULL, false);
2231 iwlagn_fw_error(priv, false);
2234 void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2236 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2238 if (!iwl_check_for_ct_kill(priv)) {
2239 IWL_ERR(priv, "Restarting adapter queue is full\n");
2240 iwlagn_fw_error(priv, false);
2244 void iwl_nic_config(struct iwl_op_mode *op_mode)
2246 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2248 priv->lib->nic_config(priv);
2251 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2253 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2255 clear_bit(STATUS_READY, &priv->status);
2256 IWL_ERR(priv, "RF is used by WiMAX\n");
2259 void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2261 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2262 int ac = priv->queue_to_ac[queue];
2264 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2267 if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
2268 IWL_DEBUG_TX_QUEUES(priv,
2269 "queue %d (AC %d) already stopped\n",
2274 set_bit(ac, &priv->transport_queue_stop);
2275 ieee80211_stop_queue(priv->hw, ac);
2278 void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2280 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2281 int ac = priv->queue_to_ac[queue];
2283 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2286 if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
2287 IWL_DEBUG_TX_QUEUES(priv,
2288 "queue %d (AC %d) already awake\n",
2293 clear_bit(ac, &priv->transport_queue_stop);
2295 if (!priv->passive_no_rx)
2296 ieee80211_wake_queue(priv->hw, ac);
2299 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2303 if (!priv->passive_no_rx)
2306 for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
2307 if (!test_bit(ac, &priv->transport_queue_stop)) {
2308 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
2309 ieee80211_wake_queue(priv->hw, ac);
2311 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2315 priv->passive_no_rx = false;
2318 void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2320 struct ieee80211_tx_info *info;
2322 info = IEEE80211_SKB_CB(skb);
2323 kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
2324 dev_kfree_skb_any(skb);
2327 void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2329 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2332 set_bit(STATUS_RF_KILL_HW, &priv->status);
2334 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2336 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2339 const struct iwl_op_mode_ops iwl_dvm_ops = {
2340 .start = iwl_op_mode_dvm_start,
2341 .stop = iwl_op_mode_dvm_stop,
2342 .rx = iwl_rx_dispatch,
2343 .queue_full = iwl_stop_sw_queue,
2344 .queue_not_full = iwl_wake_sw_queue,
2345 .hw_rf_kill = iwl_set_hw_rfkill_state,
2346 .free_skb = iwl_free_skb,
2347 .nic_error = iwl_nic_error,
2348 .cmd_queue_full = iwl_cmd_queue_full,
2349 .nic_config = iwl_nic_config,
2350 .wimax_active = iwl_wimax_active,
2353 /*****************************************************************************
2355 * driver and module entry point
2357 *****************************************************************************/
2359 struct kmem_cache *iwl_tx_cmd_pool;
2361 static int __init iwl_init(void)
2365 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2366 pr_info(DRV_COPYRIGHT "\n");
2368 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2369 sizeof(struct iwl_device_cmd),
2370 sizeof(void *), 0, NULL);
2371 if (!iwl_tx_cmd_pool)
2374 ret = iwlagn_rate_control_register();
2376 pr_err("Unable to register rate control algorithm: %d\n", ret);
2377 goto error_rc_register;
2380 ret = iwl_pci_register_driver();
2382 goto error_pci_register;
2386 iwlagn_rate_control_unregister();
2388 kmem_cache_destroy(iwl_tx_cmd_pool);
2392 static void __exit iwl_exit(void)
2394 iwl_pci_unregister_driver();
2395 iwlagn_rate_control_unregister();
2396 kmem_cache_destroy(iwl_tx_cmd_pool);
2399 module_exit(iwl_exit);
2400 module_init(iwl_init);
2402 #ifdef CONFIG_IWLWIFI_DEBUG
2403 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2405 MODULE_PARM_DESC(debug, "debug output mask");
2408 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2409 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2410 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2411 MODULE_PARM_DESC(11n_disable,
2412 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
2413 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2415 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2416 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2417 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2419 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2421 MODULE_PARM_DESC(antenna_coupling,
2422 "specify antenna coupling in dB (defualt: 0 dB)");
2424 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2426 MODULE_PARM_DESC(bt_ch_inhibition,
2427 "Enable BT channel inhibition (default: enable)");
2429 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2430 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2432 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2433 MODULE_PARM_DESC(wd_disable,
2434 "Disable stuck queue watchdog timer 0=system default, "
2435 "1=disable, 2=enable (default: 0)");
2438 * set bt_coex_active to true, uCode will do kill/defer
2439 * every time the priority line is asserted (BT is sending signals on the
2440 * priority line in the PCIx).
2441 * set bt_coex_active to false, uCode will ignore the BT activity and
2442 * perform the normal operation
2444 * User might experience transmit issue on some platform due to WiFi/BT
2445 * co-exist problem. The possible behaviors are:
2446 * Able to scan and finding all the available AP
2447 * Not able to associate with any AP
2448 * On those platforms, WiFi communication can be restored by set
2449 * "bt_coex_active" module parameter to "false"
2451 * default: bt_coex_active = true (BT_COEX_ENABLE)
2453 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2455 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2457 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2458 MODULE_PARM_DESC(led_mode, "0=system default, "
2459 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
2461 module_param_named(power_save, iwlagn_mod_params.power_save,
2463 MODULE_PARM_DESC(power_save,
2464 "enable WiFi power management (default: disable)");
2466 module_param_named(power_level, iwlagn_mod_params.power_level,
2468 MODULE_PARM_DESC(power_level,
2469 "default power save level (range from 1 - 5, default: 1)");
2471 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2473 MODULE_PARM_DESC(auto_agg,
2474 "enable agg w/o check traffic load (default: enable)");