1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 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 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.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-helpers.h"
53 #include "iwl-calib.h"
56 /******************************************************************************
60 ******************************************************************************/
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
95 /**************************************************************/
99 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
111 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
112 * @priv: staging_rxon is compared to active_rxon
114 * If the RXON structure is changing enough to require a new tune,
115 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
116 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
118 static int iwl_full_rxon_required(struct iwl_priv *priv)
121 /* These items are only settable from the full RXON command */
122 if (!(iwl_is_associated(priv)) ||
123 compare_ether_addr(priv->staging_rxon.bssid_addr,
124 priv->active_rxon.bssid_addr) ||
125 compare_ether_addr(priv->staging_rxon.node_addr,
126 priv->active_rxon.node_addr) ||
127 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
128 priv->active_rxon.wlap_bssid_addr) ||
129 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
130 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
131 (priv->staging_rxon.air_propagation !=
132 priv->active_rxon.air_propagation) ||
133 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
134 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
135 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
136 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
137 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
140 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
141 * be updated with the RXON_ASSOC command -- however only some
142 * flag transitions are allowed using RXON_ASSOC */
144 /* Check if we are not switching bands */
145 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
146 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
149 /* Check if we are switching association toggle */
150 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
151 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
158 * iwl_commit_rxon - commit staging_rxon to hardware
160 * The RXON command in staging_rxon is committed to the hardware and
161 * the active_rxon structure is updated with the new data. This
162 * function correctly transitions out of the RXON_ASSOC_MSK state if
163 * a HW tune is required based on the RXON structure changes.
165 static int iwl_commit_rxon(struct iwl_priv *priv)
167 /* cast away the const for active_rxon in this function */
168 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
171 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
173 if (!iwl_is_alive(priv))
176 /* always get timestamp with Rx frame */
177 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
178 /* allow CTS-to-self if possible. this is relevant only for
179 * 5000, but will not damage 4965 */
180 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
182 ret = iwl_agn_check_rxon_cmd(&priv->staging_rxon);
184 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
188 /* If we don't need to send a full RXON, we can use
189 * iwl_rxon_assoc_cmd which is used to reconfigure filter
190 * and other flags for the current radio configuration. */
191 if (!iwl_full_rxon_required(priv)) {
192 ret = iwl_send_rxon_assoc(priv);
194 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
198 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
202 /* station table will be cleared */
203 priv->assoc_station_added = 0;
205 /* If we are currently associated and the new config requires
206 * an RXON_ASSOC and the new config wants the associated mask enabled,
207 * we must clear the associated from the active configuration
208 * before we apply the new config */
209 if (iwl_is_associated(priv) && new_assoc) {
210 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
211 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
213 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
214 sizeof(struct iwl_rxon_cmd),
217 /* If the mask clearing failed then we set
218 * active_rxon back to what it was previously */
220 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
221 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
226 IWL_DEBUG_INFO("Sending RXON\n"
227 "* with%s RXON_FILTER_ASSOC_MSK\n"
230 (new_assoc ? "" : "out"),
231 le16_to_cpu(priv->staging_rxon.channel),
232 priv->staging_rxon.bssid_addr);
234 iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
236 /* Apply the new configuration
237 * RXON unassoc clears the station table in uCode, send it before
238 * we add the bcast station. If assoc bit is set, we will send RXON
239 * after having added the bcast and bssid station.
242 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
243 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
245 IWL_ERROR("Error setting new RXON (%d)\n", ret);
248 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
251 iwl_clear_stations_table(priv);
253 if (!priv->error_recovering)
254 priv->start_calib = 0;
256 /* Add the broadcast address so we can send broadcast frames */
257 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
258 IWL_INVALID_STATION) {
259 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
263 /* If we have set the ASSOC_MSK and we are in BSS mode then
264 * add the IWL_AP_ID to the station rate table */
266 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
267 ret = iwl_rxon_add_station(priv,
268 priv->active_rxon.bssid_addr, 1);
269 if (ret == IWL_INVALID_STATION) {
270 IWL_ERROR("Error adding AP address for TX.\n");
273 priv->assoc_station_added = 1;
274 if (priv->default_wep_key &&
275 iwl_send_static_wepkey_cmd(priv, 0))
276 IWL_ERROR("Could not send WEP static key.\n");
279 /* Apply the new configuration
280 * RXON assoc doesn't clear the station table in uCode,
282 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
283 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
285 IWL_ERROR("Error setting new RXON (%d)\n", ret);
288 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
291 iwl_init_sensitivity(priv);
293 /* If we issue a new RXON command which required a tune then we must
294 * send a new TXPOWER command or we won't be able to Tx any frames */
295 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
297 IWL_ERROR("Error sending TX power (%d)\n", ret);
304 void iwl_update_chain_flags(struct iwl_priv *priv)
307 iwl_set_rxon_chain(priv);
308 iwl_commit_rxon(priv);
311 static int iwl_send_bt_config(struct iwl_priv *priv)
313 struct iwl_bt_cmd bt_cmd = {
321 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
322 sizeof(struct iwl_bt_cmd), &bt_cmd);
325 static void iwl_clear_free_frames(struct iwl_priv *priv)
327 struct list_head *element;
329 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
332 while (!list_empty(&priv->free_frames)) {
333 element = priv->free_frames.next;
335 kfree(list_entry(element, struct iwl_frame, list));
336 priv->frames_count--;
339 if (priv->frames_count) {
340 IWL_WARNING("%d frames still in use. Did we lose one?\n",
342 priv->frames_count = 0;
346 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
348 struct iwl_frame *frame;
349 struct list_head *element;
350 if (list_empty(&priv->free_frames)) {
351 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
353 IWL_ERROR("Could not allocate frame!\n");
357 priv->frames_count++;
361 element = priv->free_frames.next;
363 return list_entry(element, struct iwl_frame, list);
366 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
368 memset(frame, 0, sizeof(*frame));
369 list_add(&frame->list, &priv->free_frames);
372 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
373 struct ieee80211_hdr *hdr,
374 const u8 *dest, int left)
376 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
377 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
378 (priv->iw_mode != NL80211_IFTYPE_AP)))
381 if (priv->ibss_beacon->len > left)
384 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
386 return priv->ibss_beacon->len;
389 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
395 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
396 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
398 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
400 /* Find lowest valid rate */
401 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
402 i = iwl_rates[i].next_ieee) {
403 if (rate_mask & (1 << i))
404 return iwl_rates[i].plcp;
407 /* No valid rate was found. Assign the lowest one */
408 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
409 return IWL_RATE_1M_PLCP;
411 return IWL_RATE_6M_PLCP;
414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
415 struct iwl_frame *frame, u8 rate)
417 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
418 unsigned int frame_size;
420 tx_beacon_cmd = &frame->u.beacon;
421 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
423 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
424 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
426 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
428 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
430 BUG_ON(frame_size > MAX_MPDU_SIZE);
431 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
433 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
434 tx_beacon_cmd->tx.rate_n_flags =
435 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
437 tx_beacon_cmd->tx.rate_n_flags =
438 iwl_hw_set_rate_n_flags(rate, 0);
440 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
442 TX_CMD_FLG_STA_RATE_MSK;
444 return sizeof(*tx_beacon_cmd) + frame_size;
446 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
448 struct iwl_frame *frame;
449 unsigned int frame_size;
453 frame = iwl_get_free_frame(priv);
456 IWL_ERROR("Could not obtain free frame buffer for beacon "
461 rate = iwl_rate_get_lowest_plcp(priv);
463 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
465 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
468 iwl_free_frame(priv, frame);
473 /******************************************************************************
475 * Misc. internal state and helper functions
477 ******************************************************************************/
479 static void iwl_ht_conf(struct iwl_priv *priv,
480 struct ieee80211_bss_conf *bss_conf)
482 struct ieee80211_sta_ht_cap *ht_conf;
483 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
484 struct ieee80211_sta *sta;
486 IWL_DEBUG_MAC80211("enter: \n");
488 if (!iwl_conf->is_ht)
493 * It is totally wrong to base global information on something
494 * that is valid only when associated, alas, this driver works
495 * that way and I don't know how to fix it.
499 sta = ieee80211_find_sta(priv->hw, priv->bssid);
504 ht_conf = &sta->ht_cap;
506 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
507 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
508 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
509 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
511 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
512 iwl_conf->max_amsdu_size =
513 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
515 iwl_conf->supported_chan_width =
516 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
518 iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
519 /* If no above or below channel supplied disable FAT channel */
520 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
521 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
522 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
523 iwl_conf->supported_chan_width = 0;
526 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
528 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
530 iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
531 iwl_conf->ht_protection =
532 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
533 iwl_conf->non_GF_STA_present =
534 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
538 IWL_DEBUG_MAC80211("leave\n");
544 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
546 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
549 priv->qos_data.def_qos_parm.qos_flags = 0;
551 if (priv->qos_data.qos_cap.q_AP.queue_request &&
552 !priv->qos_data.qos_cap.q_AP.txop_request)
553 priv->qos_data.def_qos_parm.qos_flags |=
554 QOS_PARAM_FLG_TXOP_TYPE_MSK;
555 if (priv->qos_data.qos_active)
556 priv->qos_data.def_qos_parm.qos_flags |=
557 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
559 if (priv->current_ht_config.is_ht)
560 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
562 if (force || iwl_is_associated(priv)) {
563 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
564 priv->qos_data.qos_active,
565 priv->qos_data.def_qos_parm.qos_flags);
567 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
568 sizeof(struct iwl_qosparam_cmd),
569 &priv->qos_data.def_qos_parm, NULL);
573 #define MAX_UCODE_BEACON_INTERVAL 4096
575 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
578 u16 beacon_factor = 0;
580 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
581 / MAX_UCODE_BEACON_INTERVAL;
582 new_val = beacon_val / beacon_factor;
587 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
590 s32 interval_tm, rem;
592 struct ieee80211_conf *conf = NULL;
595 conf = ieee80211_get_hw_conf(priv->hw);
597 spin_lock_irqsave(&priv->lock, flags);
598 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
599 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
601 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
602 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
603 priv->rxon_timing.atim_window = 0;
605 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
607 /* TODO: we need to get atim_window from upper stack
608 * for now we set to 0 */
609 priv->rxon_timing.atim_window = 0;
612 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
614 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
615 interval_tm = beacon_int * 1024;
616 rem = do_div(tsf, interval_tm);
617 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
619 spin_unlock_irqrestore(&priv->lock, flags);
620 IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
621 le16_to_cpu(priv->rxon_timing.beacon_interval),
622 le32_to_cpu(priv->rxon_timing.beacon_init_val),
623 le16_to_cpu(priv->rxon_timing.atim_window));
626 static void iwl_set_flags_for_band(struct iwl_priv *priv,
627 enum ieee80211_band band)
629 if (band == IEEE80211_BAND_5GHZ) {
630 priv->staging_rxon.flags &=
631 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
633 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
635 /* Copied from iwl_post_associate() */
636 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
637 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
639 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
641 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
642 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
644 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
645 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
646 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
651 * initialize rxon structure with default values from eeprom
653 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
655 const struct iwl_channel_info *ch_info;
657 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
660 case NL80211_IFTYPE_AP:
661 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
664 case NL80211_IFTYPE_STATION:
665 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
666 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
669 case NL80211_IFTYPE_ADHOC:
670 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
671 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
672 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
673 RXON_FILTER_ACCEPT_GRP_MSK;
676 case NL80211_IFTYPE_MONITOR:
677 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
678 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
679 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
682 IWL_ERROR("Unsupported interface type %d\n", mode);
687 /* TODO: Figure out when short_preamble would be set and cache from
689 if (!hw_to_local(priv->hw)->short_preamble)
690 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
692 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
695 ch_info = iwl_get_channel_info(priv, priv->band,
696 le16_to_cpu(priv->active_rxon.channel));
699 ch_info = &priv->channel_info[0];
702 * in some case A channels are all non IBSS
703 * in this case force B/G channel
705 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
706 !(is_channel_ibss(ch_info)))
707 ch_info = &priv->channel_info[0];
709 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
710 priv->band = ch_info->band;
712 iwl_set_flags_for_band(priv, priv->band);
714 priv->staging_rxon.ofdm_basic_rates =
715 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
716 priv->staging_rxon.cck_basic_rates =
717 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
719 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
720 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
721 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
722 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
723 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
724 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
725 iwl_set_rxon_chain(priv);
728 static int iwl_set_mode(struct iwl_priv *priv, int mode)
730 iwl_connection_init_rx_config(priv, mode);
731 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
733 iwl_clear_stations_table(priv);
735 /* dont commit rxon if rf-kill is on*/
736 if (!iwl_is_ready_rf(priv))
739 cancel_delayed_work(&priv->scan_check);
740 if (iwl_scan_cancel_timeout(priv, 100)) {
741 IWL_WARNING("Aborted scan still in progress after 100ms\n");
742 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
746 iwl_commit_rxon(priv);
751 static void iwl_set_rate(struct iwl_priv *priv)
753 const struct ieee80211_supported_band *hw = NULL;
754 struct ieee80211_rate *rate;
757 hw = iwl_get_hw_mode(priv, priv->band);
759 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
763 priv->active_rate = 0;
764 priv->active_rate_basic = 0;
766 for (i = 0; i < hw->n_bitrates; i++) {
767 rate = &(hw->bitrates[i]);
768 if (rate->hw_value < IWL_RATE_COUNT)
769 priv->active_rate |= (1 << rate->hw_value);
772 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
773 priv->active_rate, priv->active_rate_basic);
776 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
777 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
780 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
781 priv->staging_rxon.cck_basic_rates =
782 ((priv->active_rate_basic &
783 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
785 priv->staging_rxon.cck_basic_rates =
786 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
788 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
789 priv->staging_rxon.ofdm_basic_rates =
790 ((priv->active_rate_basic &
791 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
792 IWL_FIRST_OFDM_RATE) & 0xFF;
794 priv->staging_rxon.ofdm_basic_rates =
795 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
799 /******************************************************************************
801 * Generic RX handler implementations
803 ******************************************************************************/
804 static void iwl_rx_reply_alive(struct iwl_priv *priv,
805 struct iwl_rx_mem_buffer *rxb)
807 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
808 struct iwl_alive_resp *palive;
809 struct delayed_work *pwork;
811 palive = &pkt->u.alive_frame;
813 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
815 palive->is_valid, palive->ver_type,
816 palive->ver_subtype);
818 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
819 IWL_DEBUG_INFO("Initialization Alive received.\n");
820 memcpy(&priv->card_alive_init,
822 sizeof(struct iwl_init_alive_resp));
823 pwork = &priv->init_alive_start;
825 IWL_DEBUG_INFO("Runtime Alive received.\n");
826 memcpy(&priv->card_alive, &pkt->u.alive_frame,
827 sizeof(struct iwl_alive_resp));
828 pwork = &priv->alive_start;
831 /* We delay the ALIVE response by 5ms to
832 * give the HW RF Kill time to activate... */
833 if (palive->is_valid == UCODE_VALID_OK)
834 queue_delayed_work(priv->workqueue, pwork,
835 msecs_to_jiffies(5));
837 IWL_WARNING("uCode did not respond OK.\n");
840 static void iwl_rx_reply_error(struct iwl_priv *priv,
841 struct iwl_rx_mem_buffer *rxb)
843 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
845 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
846 "seq 0x%04X ser 0x%08X\n",
847 le32_to_cpu(pkt->u.err_resp.error_type),
848 get_cmd_string(pkt->u.err_resp.cmd_id),
849 pkt->u.err_resp.cmd_id,
850 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
851 le32_to_cpu(pkt->u.err_resp.error_info));
854 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
856 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
858 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
859 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
860 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
861 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
862 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
863 rxon->channel = csa->channel;
864 priv->staging_rxon.channel = csa->channel;
867 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
868 struct iwl_rx_mem_buffer *rxb)
870 #ifdef CONFIG_IWLWIFI_DEBUG
871 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
872 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
873 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
874 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
878 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
879 struct iwl_rx_mem_buffer *rxb)
881 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
882 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
883 "notification for %s:\n",
884 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
885 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
888 static void iwl_bg_beacon_update(struct work_struct *work)
890 struct iwl_priv *priv =
891 container_of(work, struct iwl_priv, beacon_update);
892 struct sk_buff *beacon;
894 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
895 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
898 IWL_ERROR("update beacon failed\n");
902 mutex_lock(&priv->mutex);
903 /* new beacon skb is allocated every time; dispose previous.*/
904 if (priv->ibss_beacon)
905 dev_kfree_skb(priv->ibss_beacon);
907 priv->ibss_beacon = beacon;
908 mutex_unlock(&priv->mutex);
910 iwl_send_beacon_cmd(priv);
914 * iwl_bg_statistics_periodic - Timer callback to queue statistics
916 * This callback is provided in order to send a statistics request.
918 * This timer function is continually reset to execute within
919 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
920 * was received. We need to ensure we receive the statistics in order
921 * to update the temperature used for calibrating the TXPOWER.
923 static void iwl_bg_statistics_periodic(unsigned long data)
925 struct iwl_priv *priv = (struct iwl_priv *)data;
927 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
930 /* dont send host command if rf-kill is on */
931 if (!iwl_is_ready_rf(priv))
934 iwl_send_statistics_request(priv, CMD_ASYNC);
937 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
938 struct iwl_rx_mem_buffer *rxb)
940 #ifdef CONFIG_IWLWIFI_DEBUG
941 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
942 struct iwl4965_beacon_notif *beacon =
943 (struct iwl4965_beacon_notif *)pkt->u.raw;
944 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
946 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
947 "tsf %d %d rate %d\n",
948 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
949 beacon->beacon_notify_hdr.failure_frame,
950 le32_to_cpu(beacon->ibss_mgr_status),
951 le32_to_cpu(beacon->high_tsf),
952 le32_to_cpu(beacon->low_tsf), rate);
955 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
956 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
957 queue_work(priv->workqueue, &priv->beacon_update);
960 /* Handle notification from uCode that card's power state is changing
961 * due to software, hardware, or critical temperature RFKILL */
962 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
963 struct iwl_rx_mem_buffer *rxb)
965 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
966 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
967 unsigned long status = priv->status;
969 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
970 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
971 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
973 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
976 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
977 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
979 if (!iwl_grab_nic_access(priv)) {
981 priv, HBUS_TARG_MBX_C,
982 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
984 iwl_release_nic_access(priv);
987 if (!(flags & RXON_CARD_DISABLED)) {
988 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
989 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
990 if (!iwl_grab_nic_access(priv)) {
992 priv, HBUS_TARG_MBX_C,
993 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
995 iwl_release_nic_access(priv);
999 if (flags & RF_CARD_DISABLED) {
1000 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1001 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1002 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1003 if (!iwl_grab_nic_access(priv))
1004 iwl_release_nic_access(priv);
1008 if (flags & HW_CARD_DISABLED)
1009 set_bit(STATUS_RF_KILL_HW, &priv->status);
1011 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1014 if (flags & SW_CARD_DISABLED)
1015 set_bit(STATUS_RF_KILL_SW, &priv->status);
1017 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1019 if (!(flags & RXON_CARD_DISABLED))
1020 iwl_scan_cancel(priv);
1022 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1023 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1024 (test_bit(STATUS_RF_KILL_SW, &status) !=
1025 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1026 queue_work(priv->workqueue, &priv->rf_kill);
1028 wake_up_interruptible(&priv->wait_command_queue);
1031 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1034 unsigned long flags;
1036 spin_lock_irqsave(&priv->lock, flags);
1037 ret = iwl_grab_nic_access(priv);
1041 if (src == IWL_PWR_SRC_VAUX) {
1043 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1046 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1047 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1048 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1049 ~APMG_PS_CTRL_MSK_PWR_SRC);
1051 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1052 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1053 ~APMG_PS_CTRL_MSK_PWR_SRC);
1056 iwl_release_nic_access(priv);
1058 spin_unlock_irqrestore(&priv->lock, flags);
1063 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1065 * Setup the RX handlers for each of the reply types sent from the uCode
1068 * This function chains into the hardware specific files for them to setup
1069 * any hardware specific handlers as well.
1071 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1073 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1074 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1075 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1076 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1077 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1078 iwl_rx_pm_debug_statistics_notif;
1079 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1082 * The same handler is used for both the REPLY to a discrete
1083 * statistics request from the host as well as for the periodic
1084 * statistics notifications (after received beacons) from the uCode.
1086 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1087 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1089 iwl_setup_spectrum_handlers(priv);
1090 iwl_setup_rx_scan_handlers(priv);
1092 /* status change handler */
1093 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1095 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1096 iwl_rx_missed_beacon_notif;
1098 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1099 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1101 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1102 /* Set up hardware specific Rx handlers */
1103 priv->cfg->ops->lib->rx_handler_setup(priv);
1107 * this should be called while priv->lock is locked
1109 static void __iwl_rx_replenish(struct iwl_priv *priv)
1111 iwl_rx_allocate(priv);
1112 iwl_rx_queue_restock(priv);
1117 * iwl_rx_handle - Main entry function for receiving responses from uCode
1119 * Uses the priv->rx_handlers callback function array to invoke
1120 * the appropriate handlers, including command responses,
1121 * frame-received notifications, and other notifications.
1123 void iwl_rx_handle(struct iwl_priv *priv)
1125 struct iwl_rx_mem_buffer *rxb;
1126 struct iwl_rx_packet *pkt;
1127 struct iwl_rx_queue *rxq = &priv->rxq;
1130 unsigned long flags;
1134 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1135 * buffer that the driver may process (last buffer filled by ucode). */
1136 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1139 /* Rx interrupt, but nothing sent from uCode */
1141 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1143 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1147 rxb = rxq->queue[i];
1149 /* If an RXB doesn't have a Rx queue slot associated with it,
1150 * then a bug has been introduced in the queue refilling
1151 * routines -- catch it here */
1152 BUG_ON(rxb == NULL);
1154 rxq->queue[i] = NULL;
1156 dma_sync_single_range_for_cpu(
1157 &priv->pci_dev->dev, rxb->real_dma_addr,
1158 rxb->aligned_dma_addr - rxb->real_dma_addr,
1159 priv->hw_params.rx_buf_size,
1160 PCI_DMA_FROMDEVICE);
1161 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1163 /* Reclaim a command buffer only if this packet is a response
1164 * to a (driver-originated) command.
1165 * If the packet (e.g. Rx frame) originated from uCode,
1166 * there is no command buffer to reclaim.
1167 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1168 * but apparently a few don't get set; catch them here. */
1169 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1170 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1171 (pkt->hdr.cmd != REPLY_RX) &&
1172 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1173 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1174 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1175 (pkt->hdr.cmd != REPLY_TX);
1177 /* Based on type of command response or notification,
1178 * handle those that need handling via function in
1179 * rx_handlers table. See iwl_setup_rx_handlers() */
1180 if (priv->rx_handlers[pkt->hdr.cmd]) {
1181 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1182 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1183 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1185 /* No handling needed */
1186 IWL_DEBUG(IWL_DL_RX,
1187 "r %d i %d No handler needed for %s, 0x%02x\n",
1188 r, i, get_cmd_string(pkt->hdr.cmd),
1193 /* Invoke any callbacks, transfer the skb to caller, and
1194 * fire off the (possibly) blocking iwl_send_cmd()
1195 * as we reclaim the driver command queue */
1196 if (rxb && rxb->skb)
1197 iwl_tx_cmd_complete(priv, rxb);
1199 IWL_WARNING("Claim null rxb?\n");
1202 /* For now we just don't re-use anything. We can tweak this
1203 * later to try and re-use notification packets and SKBs that
1204 * fail to Rx correctly */
1205 if (rxb->skb != NULL) {
1206 priv->alloc_rxb_skb--;
1207 dev_kfree_skb_any(rxb->skb);
1211 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1212 priv->hw_params.rx_buf_size + 256,
1213 PCI_DMA_FROMDEVICE);
1214 spin_lock_irqsave(&rxq->lock, flags);
1215 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1216 spin_unlock_irqrestore(&rxq->lock, flags);
1217 i = (i + 1) & RX_QUEUE_MASK;
1218 /* If there are a lot of unused frames,
1219 * restock the Rx queue so ucode wont assert. */
1224 __iwl_rx_replenish(priv);
1230 /* Backtrack one entry */
1232 iwl_rx_queue_restock(priv);
1235 #ifdef CONFIG_IWLWIFI_DEBUG
1236 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1238 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1240 IWL_DEBUG_RADIO("RX CONFIG:\n");
1241 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1242 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1243 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1244 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1245 le32_to_cpu(rxon->filter_flags));
1246 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1247 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1248 rxon->ofdm_basic_rates);
1249 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1250 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1251 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1252 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1256 /* call this function to flush any scheduled tasklet */
1257 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1259 /* wait to make sure we flush pending tasklet*/
1260 synchronize_irq(priv->pci_dev->irq);
1261 tasklet_kill(&priv->irq_tasklet);
1265 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1267 static void iwl_irq_handle_error(struct iwl_priv *priv)
1269 /* Set the FW error flag -- cleared on iwl_down */
1270 set_bit(STATUS_FW_ERROR, &priv->status);
1272 /* Cancel currently queued command. */
1273 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1275 #ifdef CONFIG_IWLWIFI_DEBUG
1276 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1277 iwl_dump_nic_error_log(priv);
1278 iwl_dump_nic_event_log(priv);
1279 iwl_print_rx_config_cmd(priv);
1283 wake_up_interruptible(&priv->wait_command_queue);
1285 /* Keep the restart process from trying to send host
1286 * commands by clearing the INIT status bit */
1287 clear_bit(STATUS_READY, &priv->status);
1289 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1290 IWL_DEBUG(IWL_DL_FW_ERRORS,
1291 "Restarting adapter due to uCode error.\n");
1293 if (iwl_is_associated(priv)) {
1294 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1295 sizeof(priv->recovery_rxon));
1296 priv->error_recovering = 1;
1298 if (priv->cfg->mod_params->restart_fw)
1299 queue_work(priv->workqueue, &priv->restart);
1303 static void iwl_error_recovery(struct iwl_priv *priv)
1305 unsigned long flags;
1307 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1308 sizeof(priv->staging_rxon));
1309 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1310 iwl_commit_rxon(priv);
1312 iwl_rxon_add_station(priv, priv->bssid, 1);
1314 spin_lock_irqsave(&priv->lock, flags);
1315 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1316 priv->error_recovering = 0;
1317 spin_unlock_irqrestore(&priv->lock, flags);
1320 static void iwl_irq_tasklet(struct iwl_priv *priv)
1322 u32 inta, handled = 0;
1324 unsigned long flags;
1325 #ifdef CONFIG_IWLWIFI_DEBUG
1329 spin_lock_irqsave(&priv->lock, flags);
1331 /* Ack/clear/reset pending uCode interrupts.
1332 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1333 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1334 inta = iwl_read32(priv, CSR_INT);
1335 iwl_write32(priv, CSR_INT, inta);
1337 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1338 * Any new interrupts that happen after this, either while we're
1339 * in this tasklet, or later, will show up in next ISR/tasklet. */
1340 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1341 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1343 #ifdef CONFIG_IWLWIFI_DEBUG
1344 if (priv->debug_level & IWL_DL_ISR) {
1345 /* just for debug */
1346 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1347 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1348 inta, inta_mask, inta_fh);
1352 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1353 * atomic, make sure that inta covers all the interrupts that
1354 * we've discovered, even if FH interrupt came in just after
1355 * reading CSR_INT. */
1356 if (inta_fh & CSR49_FH_INT_RX_MASK)
1357 inta |= CSR_INT_BIT_FH_RX;
1358 if (inta_fh & CSR49_FH_INT_TX_MASK)
1359 inta |= CSR_INT_BIT_FH_TX;
1361 /* Now service all interrupt bits discovered above. */
1362 if (inta & CSR_INT_BIT_HW_ERR) {
1363 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1365 /* Tell the device to stop sending interrupts */
1366 iwl_disable_interrupts(priv);
1368 iwl_irq_handle_error(priv);
1370 handled |= CSR_INT_BIT_HW_ERR;
1372 spin_unlock_irqrestore(&priv->lock, flags);
1377 #ifdef CONFIG_IWLWIFI_DEBUG
1378 if (priv->debug_level & (IWL_DL_ISR)) {
1379 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1380 if (inta & CSR_INT_BIT_SCD)
1381 IWL_DEBUG_ISR("Scheduler finished to transmit "
1382 "the frame/frames.\n");
1384 /* Alive notification via Rx interrupt will do the real work */
1385 if (inta & CSR_INT_BIT_ALIVE)
1386 IWL_DEBUG_ISR("Alive interrupt\n");
1389 /* Safely ignore these bits for debug checks below */
1390 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1392 /* HW RF KILL switch toggled */
1393 if (inta & CSR_INT_BIT_RF_KILL) {
1395 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1396 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1399 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1400 hw_rf_kill ? "disable radio" : "enable radio");
1402 /* driver only loads ucode once setting the interface up.
1403 * the driver as well won't allow loading if RFKILL is set
1404 * therefore no need to restart the driver from this handler
1406 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1407 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1408 if (priv->is_open && !iwl_is_rfkill(priv))
1409 queue_work(priv->workqueue, &priv->up);
1412 handled |= CSR_INT_BIT_RF_KILL;
1415 /* Chip got too hot and stopped itself */
1416 if (inta & CSR_INT_BIT_CT_KILL) {
1417 IWL_ERROR("Microcode CT kill error detected.\n");
1418 handled |= CSR_INT_BIT_CT_KILL;
1421 /* Error detected by uCode */
1422 if (inta & CSR_INT_BIT_SW_ERR) {
1423 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1425 iwl_irq_handle_error(priv);
1426 handled |= CSR_INT_BIT_SW_ERR;
1429 /* uCode wakes up after power-down sleep */
1430 if (inta & CSR_INT_BIT_WAKEUP) {
1431 IWL_DEBUG_ISR("Wakeup interrupt\n");
1432 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1433 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1434 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1435 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1436 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1437 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1438 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1440 handled |= CSR_INT_BIT_WAKEUP;
1443 /* All uCode command responses, including Tx command responses,
1444 * Rx "responses" (frame-received notification), and other
1445 * notifications from uCode come through here*/
1446 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1447 iwl_rx_handle(priv);
1448 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1451 if (inta & CSR_INT_BIT_FH_TX) {
1452 IWL_DEBUG_ISR("Tx interrupt\n");
1453 handled |= CSR_INT_BIT_FH_TX;
1454 /* FH finished to write, send event */
1455 priv->ucode_write_complete = 1;
1456 wake_up_interruptible(&priv->wait_command_queue);
1459 if (inta & ~handled)
1460 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1462 if (inta & ~CSR_INI_SET_MASK) {
1463 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1464 inta & ~CSR_INI_SET_MASK);
1465 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1468 /* Re-enable all interrupts */
1469 /* only Re-enable if diabled by irq */
1470 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1471 iwl_enable_interrupts(priv);
1473 #ifdef CONFIG_IWLWIFI_DEBUG
1474 if (priv->debug_level & (IWL_DL_ISR)) {
1475 inta = iwl_read32(priv, CSR_INT);
1476 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1477 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1478 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1479 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1482 spin_unlock_irqrestore(&priv->lock, flags);
1485 static irqreturn_t iwl_isr(int irq, void *data)
1487 struct iwl_priv *priv = data;
1488 u32 inta, inta_mask;
1493 spin_lock(&priv->lock);
1495 /* Disable (but don't clear!) interrupts here to avoid
1496 * back-to-back ISRs and sporadic interrupts from our NIC.
1497 * If we have something to service, the tasklet will re-enable ints.
1498 * If we *don't* have something, we'll re-enable before leaving here. */
1499 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1500 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1502 /* Discover which interrupts are active/pending */
1503 inta = iwl_read32(priv, CSR_INT);
1504 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1506 /* Ignore interrupt if there's nothing in NIC to service.
1507 * This may be due to IRQ shared with another device,
1508 * or due to sporadic interrupts thrown from our NIC. */
1509 if (!inta && !inta_fh) {
1510 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1514 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1515 /* Hardware disappeared. It might have already raised
1517 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1521 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1522 inta, inta_mask, inta_fh);
1524 inta &= ~CSR_INT_BIT_SCD;
1526 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1527 if (likely(inta || inta_fh))
1528 tasklet_schedule(&priv->irq_tasklet);
1531 spin_unlock(&priv->lock);
1535 /* re-enable interrupts here since we don't have anything to service. */
1536 /* only Re-enable if diabled by irq */
1537 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1538 iwl_enable_interrupts(priv);
1539 spin_unlock(&priv->lock);
1543 /******************************************************************************
1545 * uCode download functions
1547 ******************************************************************************/
1549 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1551 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1552 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1553 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1554 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1555 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1556 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1559 static void iwl_nic_start(struct iwl_priv *priv)
1561 /* Remove all resets to allow NIC to operate */
1562 iwl_write32(priv, CSR_RESET, 0);
1567 * iwl_read_ucode - Read uCode images from disk file.
1569 * Copy into buffers for card to fetch via bus-mastering
1571 static int iwl_read_ucode(struct iwl_priv *priv)
1573 struct iwl_ucode *ucode;
1574 int ret = -EINVAL, index;
1575 const struct firmware *ucode_raw;
1576 const char *name_pre = priv->cfg->fw_name_pre;
1577 const unsigned int api_max = priv->cfg->ucode_api_max;
1578 const unsigned int api_min = priv->cfg->ucode_api_min;
1582 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1584 /* Ask kernel firmware_class module to get the boot firmware off disk.
1585 * request_firmware() is synchronous, file is in memory on return. */
1586 for (index = api_max; index >= api_min; index--) {
1587 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1588 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1590 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1597 if (index < api_max)
1598 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1600 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1601 buf, ucode_raw->size);
1609 /* Make sure that we got at least our header! */
1610 if (ucode_raw->size < sizeof(*ucode)) {
1611 IWL_ERROR("File size way too small!\n");
1616 /* Data from ucode file: header followed by uCode images */
1617 ucode = (void *)ucode_raw->data;
1619 priv->ucode_ver = le32_to_cpu(ucode->ver);
1620 api_ver = IWL_UCODE_API(priv->ucode_ver);
1621 inst_size = le32_to_cpu(ucode->inst_size);
1622 data_size = le32_to_cpu(ucode->data_size);
1623 init_size = le32_to_cpu(ucode->init_size);
1624 init_data_size = le32_to_cpu(ucode->init_data_size);
1625 boot_size = le32_to_cpu(ucode->boot_size);
1627 /* api_ver should match the api version forming part of the
1628 * firmware filename ... but we don't check for that and only rely
1629 * on the API version read from firware header from here on forward */
1631 if (api_ver < api_min || api_ver > api_max) {
1632 IWL_ERROR("Driver unable to support your firmware API. "
1633 "Driver supports v%u, firmware is v%u.\n",
1635 priv->ucode_ver = 0;
1639 if (api_ver != api_max)
1640 IWL_ERROR("Firmware has old API version. Expected v%u, "
1641 "got v%u. New firmware can be obtained "
1642 "from http://www.intellinuxwireless.org.\n",
1645 printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
1646 IWL_UCODE_MAJOR(priv->ucode_ver),
1647 IWL_UCODE_MINOR(priv->ucode_ver),
1648 IWL_UCODE_API(priv->ucode_ver),
1649 IWL_UCODE_SERIAL(priv->ucode_ver));
1651 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1653 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1655 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1657 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1659 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1661 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1664 /* Verify size of file vs. image size info in file's header */
1665 if (ucode_raw->size < sizeof(*ucode) +
1666 inst_size + data_size + init_size +
1667 init_data_size + boot_size) {
1669 IWL_DEBUG_INFO("uCode file size %d too small\n",
1670 (int)ucode_raw->size);
1675 /* Verify that uCode images will fit in card's SRAM */
1676 if (inst_size > priv->hw_params.max_inst_size) {
1677 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1683 if (data_size > priv->hw_params.max_data_size) {
1684 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1689 if (init_size > priv->hw_params.max_inst_size) {
1691 ("uCode init instr len %d too large to fit in\n",
1696 if (init_data_size > priv->hw_params.max_data_size) {
1698 ("uCode init data len %d too large to fit in\n",
1703 if (boot_size > priv->hw_params.max_bsm_size) {
1705 ("uCode boot instr len %d too large to fit in\n",
1711 /* Allocate ucode buffers for card's bus-master loading ... */
1713 /* Runtime instructions and 2 copies of data:
1714 * 1) unmodified from disk
1715 * 2) backup cache for save/restore during power-downs */
1716 priv->ucode_code.len = inst_size;
1717 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1719 priv->ucode_data.len = data_size;
1720 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1722 priv->ucode_data_backup.len = data_size;
1723 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1725 /* Initialization instructions and data */
1726 if (init_size && init_data_size) {
1727 priv->ucode_init.len = init_size;
1728 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1730 priv->ucode_init_data.len = init_data_size;
1731 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1733 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1737 /* Bootstrap (instructions only, no data) */
1739 priv->ucode_boot.len = boot_size;
1740 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1742 if (!priv->ucode_boot.v_addr)
1746 /* Copy images into buffers for card's bus-master reads ... */
1748 /* Runtime instructions (first block of data in file) */
1749 src = &ucode->data[0];
1750 len = priv->ucode_code.len;
1751 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1752 memcpy(priv->ucode_code.v_addr, src, len);
1753 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1754 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1756 /* Runtime data (2nd block)
1757 * NOTE: Copy into backup buffer will be done in iwl_up() */
1758 src = &ucode->data[inst_size];
1759 len = priv->ucode_data.len;
1760 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1761 memcpy(priv->ucode_data.v_addr, src, len);
1762 memcpy(priv->ucode_data_backup.v_addr, src, len);
1764 /* Initialization instructions (3rd block) */
1766 src = &ucode->data[inst_size + data_size];
1767 len = priv->ucode_init.len;
1768 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1770 memcpy(priv->ucode_init.v_addr, src, len);
1773 /* Initialization data (4th block) */
1774 if (init_data_size) {
1775 src = &ucode->data[inst_size + data_size + init_size];
1776 len = priv->ucode_init_data.len;
1777 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1779 memcpy(priv->ucode_init_data.v_addr, src, len);
1782 /* Bootstrap instructions (5th block) */
1783 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1784 len = priv->ucode_boot.len;
1785 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1786 memcpy(priv->ucode_boot.v_addr, src, len);
1788 /* We have our copies now, allow OS release its copies */
1789 release_firmware(ucode_raw);
1793 IWL_ERROR("failed to allocate pci memory\n");
1795 iwl_dealloc_ucode_pci(priv);
1798 release_firmware(ucode_raw);
1805 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1806 struct sk_buff *skb);
1809 * iwl_alive_start - called after REPLY_ALIVE notification received
1810 * from protocol/runtime uCode (initialization uCode's
1811 * Alive gets handled by iwl_init_alive_start()).
1813 static void iwl_alive_start(struct iwl_priv *priv)
1817 IWL_DEBUG_INFO("Runtime Alive received.\n");
1819 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1820 /* We had an error bringing up the hardware, so take it
1821 * all the way back down so we can try again */
1822 IWL_DEBUG_INFO("Alive failed.\n");
1826 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1827 * This is a paranoid check, because we would not have gotten the
1828 * "runtime" alive if code weren't properly loaded. */
1829 if (iwl_verify_ucode(priv)) {
1830 /* Runtime instruction load was bad;
1831 * take it all the way back down so we can try again */
1832 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1836 iwl_clear_stations_table(priv);
1837 ret = priv->cfg->ops->lib->alive_notify(priv);
1839 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1844 /* After the ALIVE response, we can send host commands to the uCode */
1845 set_bit(STATUS_ALIVE, &priv->status);
1847 if (iwl_is_rfkill(priv))
1850 ieee80211_wake_queues(priv->hw);
1852 priv->active_rate = priv->rates_mask;
1853 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1855 if (iwl_is_associated(priv)) {
1856 struct iwl_rxon_cmd *active_rxon =
1857 (struct iwl_rxon_cmd *)&priv->active_rxon;
1859 memcpy(&priv->staging_rxon, &priv->active_rxon,
1860 sizeof(priv->staging_rxon));
1861 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1863 /* Initialize our rx_config data */
1864 iwl_connection_init_rx_config(priv, priv->iw_mode);
1865 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1868 /* Configure Bluetooth device coexistence support */
1869 iwl_send_bt_config(priv);
1871 iwl_reset_run_time_calib(priv);
1873 /* Configure the adapter for unassociated operation */
1874 iwl_commit_rxon(priv);
1876 /* At this point, the NIC is initialized and operational */
1877 iwl_rf_kill_ct_config(priv);
1879 iwl_leds_register(priv);
1881 IWL_DEBUG_INFO("ALIVE processing complete.\n");
1882 set_bit(STATUS_READY, &priv->status);
1883 wake_up_interruptible(&priv->wait_command_queue);
1885 if (priv->error_recovering)
1886 iwl_error_recovery(priv);
1888 iwl_power_update_mode(priv, 1);
1890 /* reassociate for ADHOC mode */
1891 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1892 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1895 iwl_mac_beacon_update(priv->hw, beacon);
1899 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1900 iwl_set_mode(priv, priv->iw_mode);
1905 queue_work(priv->workqueue, &priv->restart);
1908 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1910 static void __iwl_down(struct iwl_priv *priv)
1912 unsigned long flags;
1913 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1915 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1918 set_bit(STATUS_EXIT_PENDING, &priv->status);
1920 iwl_leds_unregister(priv);
1922 iwl_clear_stations_table(priv);
1924 /* Unblock any waiting calls */
1925 wake_up_interruptible_all(&priv->wait_command_queue);
1927 /* Wipe out the EXIT_PENDING status bit if we are not actually
1928 * exiting the module */
1930 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1932 /* stop and reset the on-board processor */
1933 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1935 /* tell the device to stop sending interrupts */
1936 spin_lock_irqsave(&priv->lock, flags);
1937 iwl_disable_interrupts(priv);
1938 spin_unlock_irqrestore(&priv->lock, flags);
1939 iwl_synchronize_irq(priv);
1941 if (priv->mac80211_registered)
1942 ieee80211_stop_queues(priv->hw);
1944 /* If we have not previously called iwl_init() then
1945 * clear all bits but the RF Kill and SUSPEND bits and return */
1946 if (!iwl_is_init(priv)) {
1947 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1949 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1951 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1952 STATUS_GEO_CONFIGURED |
1953 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1955 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1956 STATUS_EXIT_PENDING;
1960 /* ...otherwise clear out all the status bits but the RF Kill and
1961 * SUSPEND bits and continue taking the NIC down. */
1962 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1964 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1966 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1967 STATUS_GEO_CONFIGURED |
1968 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1970 test_bit(STATUS_FW_ERROR, &priv->status) <<
1972 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1973 STATUS_EXIT_PENDING;
1975 spin_lock_irqsave(&priv->lock, flags);
1976 iwl_clear_bit(priv, CSR_GP_CNTRL,
1977 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1978 spin_unlock_irqrestore(&priv->lock, flags);
1980 iwl_txq_ctx_stop(priv);
1983 spin_lock_irqsave(&priv->lock, flags);
1984 if (!iwl_grab_nic_access(priv)) {
1985 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1986 APMG_CLK_VAL_DMA_CLK_RQT);
1987 iwl_release_nic_access(priv);
1989 spin_unlock_irqrestore(&priv->lock, flags);
1993 /* FIXME: apm_ops.suspend(priv) */
1994 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1995 priv->cfg->ops->lib->apm_ops.stop(priv);
1997 priv->cfg->ops->lib->apm_ops.reset(priv);
1999 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2001 if (priv->ibss_beacon)
2002 dev_kfree_skb(priv->ibss_beacon);
2003 priv->ibss_beacon = NULL;
2005 /* clear out any free frames */
2006 iwl_clear_free_frames(priv);
2009 static void iwl_down(struct iwl_priv *priv)
2011 mutex_lock(&priv->mutex);
2013 mutex_unlock(&priv->mutex);
2015 iwl_cancel_deferred_work(priv);
2018 #define MAX_HW_RESTARTS 5
2020 static int __iwl_up(struct iwl_priv *priv)
2025 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2026 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2030 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2031 IWL_ERROR("ucode not available for device bringup\n");
2035 /* If platform's RF_KILL switch is NOT set to KILL */
2036 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2037 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2039 set_bit(STATUS_RF_KILL_HW, &priv->status);
2041 if (iwl_is_rfkill(priv)) {
2042 iwl_enable_interrupts(priv);
2043 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2044 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2048 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2050 ret = iwl_hw_nic_init(priv);
2052 IWL_ERROR("Unable to init nic\n");
2056 /* make sure rfkill handshake bits are cleared */
2057 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2058 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2059 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2061 /* clear (again), then enable host interrupts */
2062 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2063 iwl_enable_interrupts(priv);
2065 /* really make sure rfkill handshake bits are cleared */
2066 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2067 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2069 /* Copy original ucode data image from disk into backup cache.
2070 * This will be used to initialize the on-board processor's
2071 * data SRAM for a clean start when the runtime program first loads. */
2072 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2073 priv->ucode_data.len);
2075 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2077 iwl_clear_stations_table(priv);
2079 /* load bootstrap state machine,
2080 * load bootstrap program into processor's memory,
2081 * prepare to load the "initialize" uCode */
2082 ret = priv->cfg->ops->lib->load_ucode(priv);
2085 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2089 /* Clear out the uCode error bit if it is set */
2090 clear_bit(STATUS_FW_ERROR, &priv->status);
2092 /* start card; "initialize" will load runtime ucode */
2093 iwl_nic_start(priv);
2095 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2100 set_bit(STATUS_EXIT_PENDING, &priv->status);
2102 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2104 /* tried to restart and config the device for as long as our
2105 * patience could withstand */
2106 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2111 /*****************************************************************************
2113 * Workqueue callbacks
2115 *****************************************************************************/
2117 static void iwl_bg_init_alive_start(struct work_struct *data)
2119 struct iwl_priv *priv =
2120 container_of(data, struct iwl_priv, init_alive_start.work);
2122 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2125 mutex_lock(&priv->mutex);
2126 priv->cfg->ops->lib->init_alive_start(priv);
2127 mutex_unlock(&priv->mutex);
2130 static void iwl_bg_alive_start(struct work_struct *data)
2132 struct iwl_priv *priv =
2133 container_of(data, struct iwl_priv, alive_start.work);
2135 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2138 mutex_lock(&priv->mutex);
2139 iwl_alive_start(priv);
2140 mutex_unlock(&priv->mutex);
2143 static void iwl_bg_rf_kill(struct work_struct *work)
2145 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2147 wake_up_interruptible(&priv->wait_command_queue);
2149 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2152 mutex_lock(&priv->mutex);
2154 if (!iwl_is_rfkill(priv)) {
2155 IWL_DEBUG(IWL_DL_RF_KILL,
2156 "HW and/or SW RF Kill no longer active, restarting "
2158 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2159 queue_work(priv->workqueue, &priv->restart);
2161 /* make sure mac80211 stop sending Tx frame */
2162 if (priv->mac80211_registered)
2163 ieee80211_stop_queues(priv->hw);
2165 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2166 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2167 "disabled by SW switch\n");
2169 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2170 "Kill switch must be turned off for "
2171 "wireless networking to work.\n");
2173 mutex_unlock(&priv->mutex);
2174 iwl_rfkill_set_hw_state(priv);
2177 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2179 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2180 run_time_calib_work);
2182 mutex_lock(&priv->mutex);
2184 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2185 test_bit(STATUS_SCANNING, &priv->status)) {
2186 mutex_unlock(&priv->mutex);
2190 if (priv->start_calib) {
2191 iwl_chain_noise_calibration(priv, &priv->statistics);
2193 iwl_sensitivity_calibration(priv, &priv->statistics);
2196 mutex_unlock(&priv->mutex);
2200 static void iwl_bg_up(struct work_struct *data)
2202 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2204 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2207 mutex_lock(&priv->mutex);
2209 mutex_unlock(&priv->mutex);
2210 iwl_rfkill_set_hw_state(priv);
2213 static void iwl_bg_restart(struct work_struct *data)
2215 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2217 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2221 queue_work(priv->workqueue, &priv->up);
2224 static void iwl_bg_rx_replenish(struct work_struct *data)
2226 struct iwl_priv *priv =
2227 container_of(data, struct iwl_priv, rx_replenish);
2229 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2232 mutex_lock(&priv->mutex);
2233 iwl_rx_replenish(priv);
2234 mutex_unlock(&priv->mutex);
2237 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2239 static void iwl_post_associate(struct iwl_priv *priv)
2241 struct ieee80211_conf *conf = NULL;
2243 unsigned long flags;
2245 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2246 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2250 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2251 priv->assoc_id, priv->active_rxon.bssid_addr);
2254 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2258 if (!priv->vif || !priv->is_open)
2261 iwl_power_cancel_timeout(priv);
2262 iwl_scan_cancel_timeout(priv, 200);
2264 conf = ieee80211_get_hw_conf(priv->hw);
2266 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2267 iwl_commit_rxon(priv);
2269 iwl_setup_rxon_timing(priv);
2270 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2271 sizeof(priv->rxon_timing), &priv->rxon_timing);
2273 IWL_WARNING("REPLY_RXON_TIMING failed - "
2274 "Attempting to continue.\n");
2276 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2278 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2280 iwl_set_rxon_chain(priv);
2281 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2283 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2284 priv->assoc_id, priv->beacon_int);
2286 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2287 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2289 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2291 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2292 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2293 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2295 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2297 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2298 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2302 iwl_commit_rxon(priv);
2304 switch (priv->iw_mode) {
2305 case NL80211_IFTYPE_STATION:
2308 case NL80211_IFTYPE_ADHOC:
2310 /* assume default assoc id */
2313 iwl_rxon_add_station(priv, priv->bssid, 0);
2314 iwl_send_beacon_cmd(priv);
2319 IWL_ERROR("%s Should not be called in %d mode\n",
2320 __func__, priv->iw_mode);
2324 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2325 priv->assoc_station_added = 1;
2327 spin_lock_irqsave(&priv->lock, flags);
2328 iwl_activate_qos(priv, 0);
2329 spin_unlock_irqrestore(&priv->lock, flags);
2331 /* the chain noise calibration will enabled PM upon completion
2332 * If chain noise has already been run, then we need to enable
2333 * power management here */
2334 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2335 iwl_power_enable_management(priv);
2337 /* Enable Rx differential gain and sensitivity calibrations */
2338 iwl_chain_noise_reset(priv);
2339 priv->start_calib = 1;
2343 /*****************************************************************************
2345 * mac80211 entry point functions
2347 *****************************************************************************/
2349 #define UCODE_READY_TIMEOUT (4 * HZ)
2351 static int iwl_mac_start(struct ieee80211_hw *hw)
2353 struct iwl_priv *priv = hw->priv;
2357 IWL_DEBUG_MAC80211("enter\n");
2359 if (pci_enable_device(priv->pci_dev)) {
2360 IWL_ERROR("Fail to pci_enable_device\n");
2363 pci_restore_state(priv->pci_dev);
2364 pci_enable_msi(priv->pci_dev);
2366 /* enable interrupts if needed: hw bug w/a */
2367 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2368 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2369 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2370 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2373 ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2376 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2377 goto out_disable_msi;
2380 /* we should be verifying the device is ready to be opened */
2381 mutex_lock(&priv->mutex);
2383 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2384 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2385 * ucode filename and max sizes are card-specific. */
2387 if (!priv->ucode_code.len) {
2388 ret = iwl_read_ucode(priv);
2390 IWL_ERROR("Could not read microcode: %d\n", ret);
2391 mutex_unlock(&priv->mutex);
2392 goto out_release_irq;
2396 ret = __iwl_up(priv);
2398 mutex_unlock(&priv->mutex);
2400 iwl_rfkill_set_hw_state(priv);
2403 goto out_release_irq;
2405 if (iwl_is_rfkill(priv))
2408 IWL_DEBUG_INFO("Start UP work done.\n");
2410 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2413 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2414 * mac80211 will not be run successfully. */
2415 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2416 test_bit(STATUS_READY, &priv->status),
2417 UCODE_READY_TIMEOUT);
2419 if (!test_bit(STATUS_READY, &priv->status)) {
2420 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2421 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2423 goto out_release_irq;
2429 IWL_DEBUG_MAC80211("leave\n");
2433 free_irq(priv->pci_dev->irq, priv);
2435 pci_disable_msi(priv->pci_dev);
2436 pci_disable_device(priv->pci_dev);
2438 IWL_DEBUG_MAC80211("leave - failed\n");
2442 static void iwl_mac_stop(struct ieee80211_hw *hw)
2444 struct iwl_priv *priv = hw->priv;
2446 IWL_DEBUG_MAC80211("enter\n");
2448 if (!priv->is_open) {
2449 IWL_DEBUG_MAC80211("leave - skip\n");
2455 if (iwl_is_ready_rf(priv)) {
2456 /* stop mac, cancel any scan request and clear
2457 * RXON_FILTER_ASSOC_MSK BIT
2459 mutex_lock(&priv->mutex);
2460 iwl_scan_cancel_timeout(priv, 100);
2461 mutex_unlock(&priv->mutex);
2466 flush_workqueue(priv->workqueue);
2467 free_irq(priv->pci_dev->irq, priv);
2468 pci_disable_msi(priv->pci_dev);
2469 pci_save_state(priv->pci_dev);
2470 pci_disable_device(priv->pci_dev);
2472 IWL_DEBUG_MAC80211("leave\n");
2475 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2477 struct iwl_priv *priv = hw->priv;
2479 IWL_DEBUG_MACDUMP("enter\n");
2481 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2482 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2484 if (iwl_tx_skb(priv, skb))
2485 dev_kfree_skb_any(skb);
2487 IWL_DEBUG_MACDUMP("leave\n");
2491 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2492 struct ieee80211_if_init_conf *conf)
2494 struct iwl_priv *priv = hw->priv;
2495 unsigned long flags;
2497 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2500 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2504 spin_lock_irqsave(&priv->lock, flags);
2505 priv->vif = conf->vif;
2506 priv->iw_mode = conf->type;
2508 spin_unlock_irqrestore(&priv->lock, flags);
2510 mutex_lock(&priv->mutex);
2512 if (conf->mac_addr) {
2513 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2514 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2517 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2518 /* we are not ready, will run again when ready */
2519 set_bit(STATUS_MODE_PENDING, &priv->status);
2521 mutex_unlock(&priv->mutex);
2523 IWL_DEBUG_MAC80211("leave\n");
2528 * iwl_mac_config - mac80211 config callback
2530 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2531 * be set inappropriately and the driver currently sets the hardware up to
2532 * use it whenever needed.
2534 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2536 struct iwl_priv *priv = hw->priv;
2537 const struct iwl_channel_info *ch_info;
2538 struct ieee80211_conf *conf = &hw->conf;
2539 unsigned long flags;
2543 mutex_lock(&priv->mutex);
2544 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2546 priv->current_ht_config.is_ht = conf->ht.enabled;
2548 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2549 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2553 if (!conf->radio_enabled)
2554 iwl_radio_kill_sw_disable_radio(priv);
2556 if (!iwl_is_ready(priv)) {
2557 IWL_DEBUG_MAC80211("leave - not ready\n");
2562 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2563 test_bit(STATUS_SCANNING, &priv->status))) {
2564 IWL_DEBUG_MAC80211("leave - scanning\n");
2565 mutex_unlock(&priv->mutex);
2569 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2570 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2571 if (!is_channel_valid(ch_info)) {
2572 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2577 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2578 !is_channel_ibss(ch_info)) {
2579 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2580 conf->channel->hw_value, conf->channel->band);
2585 spin_lock_irqsave(&priv->lock, flags);
2588 /* if we are switching from ht to 2.4 clear flags
2589 * from any ht related info since 2.4 does not
2591 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2592 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2593 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2596 priv->staging_rxon.flags = 0;
2598 iwl_set_rxon_channel(priv, conf->channel);
2600 iwl_set_flags_for_band(priv, conf->channel->band);
2602 /* The list of supported rates and rate mask can be different
2603 * for each band; since the band may have changed, reset
2604 * the rate mask to what mac80211 lists */
2607 spin_unlock_irqrestore(&priv->lock, flags);
2609 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2610 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2611 iwl_hw_channel_switch(priv, conf->channel);
2616 if (!conf->radio_enabled) {
2617 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2621 if (iwl_is_rfkill(priv)) {
2622 IWL_DEBUG_MAC80211("leave - RF kill\n");
2627 if (conf->flags & IEEE80211_CONF_PS)
2628 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2630 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2632 IWL_DEBUG_MAC80211("Error setting power level\n");
2634 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2635 priv->tx_power_user_lmt, conf->power_level);
2637 iwl_set_tx_power(priv, conf->power_level, false);
2641 if (memcmp(&priv->active_rxon,
2642 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2643 iwl_commit_rxon(priv);
2645 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2647 IWL_DEBUG_MAC80211("leave\n");
2650 mutex_unlock(&priv->mutex);
2654 static void iwl_config_ap(struct iwl_priv *priv)
2657 unsigned long flags;
2659 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2662 /* The following should be done only at AP bring up */
2663 if (!iwl_is_associated(priv)) {
2665 /* RXON - unassoc (to set timing command) */
2666 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2667 iwl_commit_rxon(priv);
2670 iwl_setup_rxon_timing(priv);
2671 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2672 sizeof(priv->rxon_timing), &priv->rxon_timing);
2674 IWL_WARNING("REPLY_RXON_TIMING failed - "
2675 "Attempting to continue.\n");
2677 iwl_set_rxon_chain(priv);
2679 /* FIXME: what should be the assoc_id for AP? */
2680 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2681 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2682 priv->staging_rxon.flags |=
2683 RXON_FLG_SHORT_PREAMBLE_MSK;
2685 priv->staging_rxon.flags &=
2686 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2688 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2689 if (priv->assoc_capability &
2690 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2691 priv->staging_rxon.flags |=
2692 RXON_FLG_SHORT_SLOT_MSK;
2694 priv->staging_rxon.flags &=
2695 ~RXON_FLG_SHORT_SLOT_MSK;
2697 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2698 priv->staging_rxon.flags &=
2699 ~RXON_FLG_SHORT_SLOT_MSK;
2701 /* restore RXON assoc */
2702 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2703 iwl_commit_rxon(priv);
2704 spin_lock_irqsave(&priv->lock, flags);
2705 iwl_activate_qos(priv, 1);
2706 spin_unlock_irqrestore(&priv->lock, flags);
2707 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2709 iwl_send_beacon_cmd(priv);
2711 /* FIXME - we need to add code here to detect a totally new
2712 * configuration, reset the AP, unassoc, rxon timing, assoc,
2713 * clear sta table, add BCAST sta... */
2717 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2718 struct ieee80211_vif *vif,
2719 struct ieee80211_if_conf *conf)
2721 struct iwl_priv *priv = hw->priv;
2727 if (priv->vif != vif) {
2728 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2732 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2733 conf->changed & IEEE80211_IFCC_BEACON) {
2734 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2737 mutex_lock(&priv->mutex);
2738 rc = iwl_mac_beacon_update(hw, beacon);
2739 mutex_unlock(&priv->mutex);
2744 if (!iwl_is_alive(priv))
2747 mutex_lock(&priv->mutex);
2750 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2753 * very dubious code was here; the probe filtering flag is never set:
2755 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2756 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2759 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2761 conf->bssid = priv->mac_addr;
2762 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2763 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2766 if (priv->ibss_beacon)
2767 dev_kfree_skb(priv->ibss_beacon);
2769 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2772 if (iwl_is_rfkill(priv))
2775 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2776 !is_multicast_ether_addr(conf->bssid)) {
2777 /* If there is currently a HW scan going on in the background
2778 * then we need to cancel it else the RXON below will fail. */
2779 if (iwl_scan_cancel_timeout(priv, 100)) {
2780 IWL_WARNING("Aborted scan still in progress "
2782 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2783 mutex_unlock(&priv->mutex);
2786 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2788 /* TODO: Audit driver for usage of these members and see
2789 * if mac80211 deprecates them (priv->bssid looks like it
2790 * shouldn't be there, but I haven't scanned the IBSS code
2791 * to verify) - jpk */
2792 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2794 if (priv->iw_mode == NL80211_IFTYPE_AP)
2795 iwl_config_ap(priv);
2797 rc = iwl_commit_rxon(priv);
2798 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2799 iwl_rxon_add_station(
2800 priv, priv->active_rxon.bssid_addr, 1);
2804 iwl_scan_cancel_timeout(priv, 100);
2805 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2806 iwl_commit_rxon(priv);
2810 IWL_DEBUG_MAC80211("leave\n");
2811 mutex_unlock(&priv->mutex);
2816 static void iwl_configure_filter(struct ieee80211_hw *hw,
2817 unsigned int changed_flags,
2818 unsigned int *total_flags,
2819 int mc_count, struct dev_addr_list *mc_list)
2821 struct iwl_priv *priv = hw->priv;
2822 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2824 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2825 changed_flags, *total_flags);
2827 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2828 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2829 *filter_flags |= RXON_FILTER_PROMISC_MSK;
2831 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2833 if (changed_flags & FIF_ALLMULTI) {
2834 if (*total_flags & FIF_ALLMULTI)
2835 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2837 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2839 if (changed_flags & FIF_CONTROL) {
2840 if (*total_flags & FIF_CONTROL)
2841 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2843 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2845 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2846 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2847 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2849 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2852 /* We avoid iwl_commit_rxon here to commit the new filter flags
2853 * since mac80211 will call ieee80211_hw_config immediately.
2854 * (mc_list is not supported at this time). Otherwise, we need to
2855 * queue a background iwl_commit_rxon work.
2858 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2859 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2862 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2863 struct ieee80211_if_init_conf *conf)
2865 struct iwl_priv *priv = hw->priv;
2867 IWL_DEBUG_MAC80211("enter\n");
2869 mutex_lock(&priv->mutex);
2871 if (iwl_is_ready_rf(priv)) {
2872 iwl_scan_cancel_timeout(priv, 100);
2873 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2874 iwl_commit_rxon(priv);
2876 if (priv->vif == conf->vif) {
2878 memset(priv->bssid, 0, ETH_ALEN);
2880 mutex_unlock(&priv->mutex);
2882 IWL_DEBUG_MAC80211("leave\n");
2886 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2887 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2888 struct ieee80211_vif *vif,
2889 struct ieee80211_bss_conf *bss_conf,
2892 struct iwl_priv *priv = hw->priv;
2894 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2896 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2897 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2898 bss_conf->use_short_preamble);
2899 if (bss_conf->use_short_preamble)
2900 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2902 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2905 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2906 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2907 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2908 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2910 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2913 if (changes & BSS_CHANGED_HT) {
2914 iwl_ht_conf(priv, bss_conf);
2915 iwl_set_rxon_chain(priv);
2918 if (changes & BSS_CHANGED_ASSOC) {
2919 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2920 /* This should never happen as this function should
2921 * never be called from interrupt context. */
2922 if (WARN_ON_ONCE(in_interrupt()))
2924 if (bss_conf->assoc) {
2925 priv->assoc_id = bss_conf->aid;
2926 priv->beacon_int = bss_conf->beacon_int;
2927 priv->power_data.dtim_period = bss_conf->dtim_period;
2928 priv->timestamp = bss_conf->timestamp;
2929 priv->assoc_capability = bss_conf->assoc_capability;
2931 /* we have just associated, don't start scan too early
2932 * leave time for EAPOL exchange to complete
2934 priv->next_scan_jiffies = jiffies +
2935 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2936 mutex_lock(&priv->mutex);
2937 iwl_post_associate(priv);
2938 mutex_unlock(&priv->mutex);
2941 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2943 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2944 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2945 iwl_send_rxon_assoc(priv);
2950 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2952 unsigned long flags;
2953 struct iwl_priv *priv = hw->priv;
2956 IWL_DEBUG_MAC80211("enter\n");
2958 mutex_lock(&priv->mutex);
2959 spin_lock_irqsave(&priv->lock, flags);
2961 if (!iwl_is_ready_rf(priv)) {
2963 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2967 /* We don't schedule scan within next_scan_jiffies period.
2968 * Avoid scanning during possible EAPOL exchange, return
2969 * success immediately.
2971 if (priv->next_scan_jiffies &&
2972 time_after(priv->next_scan_jiffies, jiffies)) {
2973 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2974 queue_work(priv->workqueue, &priv->scan_completed);
2979 /* if we just finished scan ask for delay */
2980 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2981 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2982 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2983 queue_work(priv->workqueue, &priv->scan_completed);
2989 priv->one_direct_scan = 1;
2990 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2991 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2993 priv->one_direct_scan = 0;
2996 ret = iwl_scan_initiate(priv);
2998 IWL_DEBUG_MAC80211("leave\n");
3001 spin_unlock_irqrestore(&priv->lock, flags);
3002 mutex_unlock(&priv->mutex);
3007 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3008 struct ieee80211_key_conf *keyconf, const u8 *addr,
3009 u32 iv32, u16 *phase1key)
3012 struct iwl_priv *priv = hw->priv;
3013 IWL_DEBUG_MAC80211("enter\n");
3015 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3017 IWL_DEBUG_MAC80211("leave\n");
3020 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3021 const u8 *local_addr, const u8 *addr,
3022 struct ieee80211_key_conf *key)
3024 struct iwl_priv *priv = hw->priv;
3026 u8 sta_id = IWL_INVALID_STATION;
3027 u8 is_default_wep_key = 0;
3029 IWL_DEBUG_MAC80211("enter\n");
3031 if (priv->hw_params.sw_crypto) {
3032 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3036 if (is_zero_ether_addr(addr))
3037 /* only support pairwise keys */
3040 sta_id = iwl_find_station(priv, addr);
3041 if (sta_id == IWL_INVALID_STATION) {
3042 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3048 mutex_lock(&priv->mutex);
3049 iwl_scan_cancel_timeout(priv, 100);
3050 mutex_unlock(&priv->mutex);
3052 /* If we are getting WEP group key and we didn't receive any key mapping
3053 * so far, we are in legacy wep mode (group key only), otherwise we are
3055 * In legacy wep mode, we use another host command to the uCode */
3056 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3057 priv->iw_mode != NL80211_IFTYPE_AP) {
3059 is_default_wep_key = !priv->key_mapping_key;
3061 is_default_wep_key =
3062 (key->hw_key_idx == HW_KEY_DEFAULT);
3067 if (is_default_wep_key)
3068 ret = iwl_set_default_wep_key(priv, key);
3070 ret = iwl_set_dynamic_key(priv, key, sta_id);
3072 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3075 if (is_default_wep_key)
3076 ret = iwl_remove_default_wep_key(priv, key);
3078 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3080 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3086 IWL_DEBUG_MAC80211("leave\n");
3091 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3092 const struct ieee80211_tx_queue_params *params)
3094 struct iwl_priv *priv = hw->priv;
3095 unsigned long flags;
3098 IWL_DEBUG_MAC80211("enter\n");
3100 if (!iwl_is_ready_rf(priv)) {
3101 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3105 if (queue >= AC_NUM) {
3106 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3110 q = AC_NUM - 1 - queue;
3112 spin_lock_irqsave(&priv->lock, flags);
3114 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3115 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3116 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3117 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3118 cpu_to_le16((params->txop * 32));
3120 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3121 priv->qos_data.qos_active = 1;
3123 if (priv->iw_mode == NL80211_IFTYPE_AP)
3124 iwl_activate_qos(priv, 1);
3125 else if (priv->assoc_id && iwl_is_associated(priv))
3126 iwl_activate_qos(priv, 0);
3128 spin_unlock_irqrestore(&priv->lock, flags);
3130 IWL_DEBUG_MAC80211("leave\n");
3134 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3135 enum ieee80211_ampdu_mlme_action action,
3136 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3138 struct iwl_priv *priv = hw->priv;
3140 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3143 if (!(priv->cfg->sku & IWL_SKU_N))
3147 case IEEE80211_AMPDU_RX_START:
3148 IWL_DEBUG_HT("start Rx\n");
3149 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3150 case IEEE80211_AMPDU_RX_STOP:
3151 IWL_DEBUG_HT("stop Rx\n");
3152 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3153 case IEEE80211_AMPDU_TX_START:
3154 IWL_DEBUG_HT("start Tx\n");
3155 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3156 case IEEE80211_AMPDU_TX_STOP:
3157 IWL_DEBUG_HT("stop Tx\n");
3158 return iwl_tx_agg_stop(priv, sta->addr, tid);
3160 IWL_DEBUG_HT("unknown\n");
3167 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3168 struct ieee80211_tx_queue_stats *stats)
3170 struct iwl_priv *priv = hw->priv;
3172 struct iwl_tx_queue *txq;
3173 struct iwl_queue *q;
3174 unsigned long flags;
3176 IWL_DEBUG_MAC80211("enter\n");
3178 if (!iwl_is_ready_rf(priv)) {
3179 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3183 spin_lock_irqsave(&priv->lock, flags);
3185 for (i = 0; i < AC_NUM; i++) {
3186 txq = &priv->txq[i];
3188 avail = iwl_queue_space(q);
3190 stats[i].len = q->n_window - avail;
3191 stats[i].limit = q->n_window - q->high_mark;
3192 stats[i].count = q->n_window;
3195 spin_unlock_irqrestore(&priv->lock, flags);
3197 IWL_DEBUG_MAC80211("leave\n");
3202 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3203 struct ieee80211_low_level_stats *stats)
3205 struct iwl_priv *priv = hw->priv;
3208 IWL_DEBUG_MAC80211("enter\n");
3209 IWL_DEBUG_MAC80211("leave\n");
3214 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3216 struct iwl_priv *priv = hw->priv;
3217 unsigned long flags;
3219 mutex_lock(&priv->mutex);
3220 IWL_DEBUG_MAC80211("enter\n");
3222 spin_lock_irqsave(&priv->lock, flags);
3223 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3224 spin_unlock_irqrestore(&priv->lock, flags);
3226 iwl_reset_qos(priv);
3228 spin_lock_irqsave(&priv->lock, flags);
3230 priv->assoc_capability = 0;
3231 priv->assoc_station_added = 0;
3233 /* new association get rid of ibss beacon skb */
3234 if (priv->ibss_beacon)
3235 dev_kfree_skb(priv->ibss_beacon);
3237 priv->ibss_beacon = NULL;
3239 priv->beacon_int = priv->hw->conf.beacon_int;
3240 priv->timestamp = 0;
3241 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3242 priv->beacon_int = 0;
3244 spin_unlock_irqrestore(&priv->lock, flags);
3246 if (!iwl_is_ready_rf(priv)) {
3247 IWL_DEBUG_MAC80211("leave - not ready\n");
3248 mutex_unlock(&priv->mutex);
3252 /* we are restarting association process
3253 * clear RXON_FILTER_ASSOC_MSK bit
3255 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3256 iwl_scan_cancel_timeout(priv, 100);
3257 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3258 iwl_commit_rxon(priv);
3261 iwl_power_update_mode(priv, 0);
3263 /* Per mac80211.h: This is only used in IBSS mode... */
3264 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3266 /* switch to CAM during association period.
3267 * the ucode will block any association/authentication
3268 * frome during assiciation period if it can not hear
3269 * the AP because of PM. the timer enable PM back is
3270 * association do not complete
3272 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3273 IEEE80211_CHAN_RADAR))
3274 iwl_power_disable_management(priv, 3000);
3276 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3277 mutex_unlock(&priv->mutex);
3283 mutex_unlock(&priv->mutex);
3285 IWL_DEBUG_MAC80211("leave\n");
3288 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3290 struct iwl_priv *priv = hw->priv;
3291 unsigned long flags;
3294 IWL_DEBUG_MAC80211("enter\n");
3296 if (!iwl_is_ready_rf(priv)) {
3297 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3301 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3302 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3306 spin_lock_irqsave(&priv->lock, flags);
3308 if (priv->ibss_beacon)
3309 dev_kfree_skb(priv->ibss_beacon);
3311 priv->ibss_beacon = skb;
3314 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3315 priv->timestamp = le64_to_cpu(timestamp);
3317 IWL_DEBUG_MAC80211("leave\n");
3318 spin_unlock_irqrestore(&priv->lock, flags);
3320 iwl_reset_qos(priv);
3322 iwl_post_associate(priv);
3328 /*****************************************************************************
3332 *****************************************************************************/
3334 #ifdef CONFIG_IWLWIFI_DEBUG
3337 * The following adds a new attribute to the sysfs representation
3338 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3339 * used for controlling the debug level.
3341 * See the level definitions in iwl for details.
3344 static ssize_t show_debug_level(struct device *d,
3345 struct device_attribute *attr, char *buf)
3347 struct iwl_priv *priv = d->driver_data;
3349 return sprintf(buf, "0x%08X\n", priv->debug_level);
3351 static ssize_t store_debug_level(struct device *d,
3352 struct device_attribute *attr,
3353 const char *buf, size_t count)
3355 struct iwl_priv *priv = d->driver_data;
3359 ret = strict_strtoul(buf, 0, &val);
3361 printk(KERN_INFO DRV_NAME
3362 ": %s is not in hex or decimal form.\n", buf);
3364 priv->debug_level = val;
3366 return strnlen(buf, count);
3369 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3370 show_debug_level, store_debug_level);
3373 #endif /* CONFIG_IWLWIFI_DEBUG */
3376 static ssize_t show_version(struct device *d,
3377 struct device_attribute *attr, char *buf)
3379 struct iwl_priv *priv = d->driver_data;
3380 struct iwl_alive_resp *palive = &priv->card_alive;
3384 if (palive->is_valid)
3385 pos += sprintf(buf + pos,
3386 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3387 "fw type: 0x%01X 0x%01X\n",
3388 palive->ucode_major, palive->ucode_minor,
3389 palive->sw_rev[0], palive->sw_rev[1],
3390 palive->ver_type, palive->ver_subtype);
3392 pos += sprintf(buf + pos, "fw not loaded\n");
3395 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3396 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3399 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3405 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3407 static ssize_t show_temperature(struct device *d,
3408 struct device_attribute *attr, char *buf)
3410 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3412 if (!iwl_is_alive(priv))
3415 return sprintf(buf, "%d\n", priv->temperature);
3418 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3420 static ssize_t show_tx_power(struct device *d,
3421 struct device_attribute *attr, char *buf)
3423 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3424 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3427 static ssize_t store_tx_power(struct device *d,
3428 struct device_attribute *attr,
3429 const char *buf, size_t count)
3431 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3435 ret = strict_strtoul(buf, 10, &val);
3437 printk(KERN_INFO DRV_NAME
3438 ": %s is not in decimal form.\n", buf);
3440 iwl_set_tx_power(priv, val, false);
3445 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3447 static ssize_t show_flags(struct device *d,
3448 struct device_attribute *attr, char *buf)
3450 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3452 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3455 static ssize_t store_flags(struct device *d,
3456 struct device_attribute *attr,
3457 const char *buf, size_t count)
3459 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3462 int ret = strict_strtoul(buf, 0, &val);
3467 mutex_lock(&priv->mutex);
3468 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3469 /* Cancel any currently running scans... */
3470 if (iwl_scan_cancel_timeout(priv, 100))
3471 IWL_WARNING("Could not cancel scan.\n");
3473 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3474 priv->staging_rxon.flags = cpu_to_le32(flags);
3475 iwl_commit_rxon(priv);
3478 mutex_unlock(&priv->mutex);
3483 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3485 static ssize_t show_filter_flags(struct device *d,
3486 struct device_attribute *attr, char *buf)
3488 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3490 return sprintf(buf, "0x%04X\n",
3491 le32_to_cpu(priv->active_rxon.filter_flags));
3494 static ssize_t store_filter_flags(struct device *d,
3495 struct device_attribute *attr,
3496 const char *buf, size_t count)
3498 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3501 int ret = strict_strtoul(buf, 0, &val);
3504 filter_flags = (u32)val;
3506 mutex_lock(&priv->mutex);
3507 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3508 /* Cancel any currently running scans... */
3509 if (iwl_scan_cancel_timeout(priv, 100))
3510 IWL_WARNING("Could not cancel scan.\n");
3512 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3513 "0x%04X\n", filter_flags);
3514 priv->staging_rxon.filter_flags =
3515 cpu_to_le32(filter_flags);
3516 iwl_commit_rxon(priv);
3519 mutex_unlock(&priv->mutex);
3524 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3525 store_filter_flags);
3527 static ssize_t store_retry_rate(struct device *d,
3528 struct device_attribute *attr,
3529 const char *buf, size_t count)
3531 struct iwl_priv *priv = dev_get_drvdata(d);
3533 int ret = strict_strtol(buf, 10, &val);
3537 priv->retry_rate = (val > 0) ? val : 1;
3542 static ssize_t show_retry_rate(struct device *d,
3543 struct device_attribute *attr, char *buf)
3545 struct iwl_priv *priv = dev_get_drvdata(d);
3546 return sprintf(buf, "%d", priv->retry_rate);
3549 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3552 static ssize_t store_power_level(struct device *d,
3553 struct device_attribute *attr,
3554 const char *buf, size_t count)
3556 struct iwl_priv *priv = dev_get_drvdata(d);
3561 mutex_lock(&priv->mutex);
3563 if (!iwl_is_ready(priv)) {
3568 ret = strict_strtoul(buf, 10, &mode);
3572 ret = iwl_power_set_user_mode(priv, mode);
3574 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3580 mutex_unlock(&priv->mutex);
3584 static ssize_t show_power_level(struct device *d,
3585 struct device_attribute *attr, char *buf)
3587 struct iwl_priv *priv = dev_get_drvdata(d);
3588 int mode = priv->power_data.user_power_setting;
3589 int system = priv->power_data.system_power_setting;
3590 int level = priv->power_data.power_mode;
3594 case IWL_POWER_SYS_AUTO:
3595 p += sprintf(p, "SYSTEM:auto");
3597 case IWL_POWER_SYS_AC:
3598 p += sprintf(p, "SYSTEM:ac");
3600 case IWL_POWER_SYS_BATTERY:
3601 p += sprintf(p, "SYSTEM:battery");
3605 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3607 p += sprintf(p, "\tINDEX:%d", level);
3608 p += sprintf(p, "\n");
3612 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3616 static ssize_t show_statistics(struct device *d,
3617 struct device_attribute *attr, char *buf)
3619 struct iwl_priv *priv = dev_get_drvdata(d);
3620 u32 size = sizeof(struct iwl_notif_statistics);
3621 u32 len = 0, ofs = 0;
3622 u8 *data = (u8 *)&priv->statistics;
3625 if (!iwl_is_alive(priv))
3628 mutex_lock(&priv->mutex);
3629 rc = iwl_send_statistics_request(priv, 0);
3630 mutex_unlock(&priv->mutex);
3634 "Error sending statistics request: 0x%08X\n", rc);
3638 while (size && (PAGE_SIZE - len)) {
3639 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3640 PAGE_SIZE - len, 1);
3642 if (PAGE_SIZE - len)
3646 size -= min(size, 16U);
3652 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3654 static ssize_t show_status(struct device *d,
3655 struct device_attribute *attr, char *buf)
3657 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3658 if (!iwl_is_alive(priv))
3660 return sprintf(buf, "0x%08x\n", (int)priv->status);
3663 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3665 /*****************************************************************************
3667 * driver setup and teardown
3669 *****************************************************************************/
3671 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3673 priv->workqueue = create_workqueue(DRV_NAME);
3675 init_waitqueue_head(&priv->wait_command_queue);
3677 INIT_WORK(&priv->up, iwl_bg_up);
3678 INIT_WORK(&priv->restart, iwl_bg_restart);
3679 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3680 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3681 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3682 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3683 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3684 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3686 iwl_setup_scan_deferred_work(priv);
3687 iwl_setup_power_deferred_work(priv);
3689 if (priv->cfg->ops->lib->setup_deferred_work)
3690 priv->cfg->ops->lib->setup_deferred_work(priv);
3692 init_timer(&priv->statistics_periodic);
3693 priv->statistics_periodic.data = (unsigned long)priv;
3694 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3696 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3697 iwl_irq_tasklet, (unsigned long)priv);
3700 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3702 if (priv->cfg->ops->lib->cancel_deferred_work)
3703 priv->cfg->ops->lib->cancel_deferred_work(priv);
3705 cancel_delayed_work_sync(&priv->init_alive_start);
3706 cancel_delayed_work(&priv->scan_check);
3707 cancel_delayed_work_sync(&priv->set_power_save);
3708 cancel_delayed_work(&priv->alive_start);
3709 cancel_work_sync(&priv->beacon_update);
3710 del_timer_sync(&priv->statistics_periodic);
3713 static struct attribute *iwl_sysfs_entries[] = {
3714 &dev_attr_flags.attr,
3715 &dev_attr_filter_flags.attr,
3716 &dev_attr_power_level.attr,
3717 &dev_attr_retry_rate.attr,
3718 &dev_attr_statistics.attr,
3719 &dev_attr_status.attr,
3720 &dev_attr_temperature.attr,
3721 &dev_attr_tx_power.attr,
3722 #ifdef CONFIG_IWLWIFI_DEBUG
3723 &dev_attr_debug_level.attr,
3725 &dev_attr_version.attr,
3730 static struct attribute_group iwl_attribute_group = {
3731 .name = NULL, /* put in device directory */
3732 .attrs = iwl_sysfs_entries,
3735 static struct ieee80211_ops iwl_hw_ops = {
3737 .start = iwl_mac_start,
3738 .stop = iwl_mac_stop,
3739 .add_interface = iwl_mac_add_interface,
3740 .remove_interface = iwl_mac_remove_interface,
3741 .config = iwl_mac_config,
3742 .config_interface = iwl_mac_config_interface,
3743 .configure_filter = iwl_configure_filter,
3744 .set_key = iwl_mac_set_key,
3745 .update_tkip_key = iwl_mac_update_tkip_key,
3746 .get_stats = iwl_mac_get_stats,
3747 .get_tx_stats = iwl_mac_get_tx_stats,
3748 .conf_tx = iwl_mac_conf_tx,
3749 .reset_tsf = iwl_mac_reset_tsf,
3750 .bss_info_changed = iwl_bss_info_changed,
3751 .ampdu_action = iwl_mac_ampdu_action,
3752 .hw_scan = iwl_mac_hw_scan
3755 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3758 struct iwl_priv *priv;
3759 struct ieee80211_hw *hw;
3760 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3761 unsigned long flags;
3763 /************************
3764 * 1. Allocating HW data
3765 ************************/
3767 /* Disabling hardware scan means that mac80211 will perform scans
3768 * "the hard way", rather than using device's scan. */
3769 if (cfg->mod_params->disable_hw_scan) {
3770 if (cfg->mod_params->debug & IWL_DL_INFO)
3771 dev_printk(KERN_DEBUG, &(pdev->dev),
3772 "Disabling hw_scan\n");
3773 iwl_hw_ops.hw_scan = NULL;
3776 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3782 /* At this point both hw and priv are allocated. */
3784 SET_IEEE80211_DEV(hw, &pdev->dev);
3786 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3788 priv->pci_dev = pdev;
3790 #ifdef CONFIG_IWLWIFI_DEBUG
3791 priv->debug_level = priv->cfg->mod_params->debug;
3792 atomic_set(&priv->restrict_refcnt, 0);
3795 /**************************
3796 * 2. Initializing PCI bus
3797 **************************/
3798 if (pci_enable_device(pdev)) {
3800 goto out_ieee80211_free_hw;
3803 pci_set_master(pdev);
3805 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3807 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3809 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3811 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3812 /* both attempts failed: */
3814 printk(KERN_WARNING "%s: No suitable DMA available.\n",
3816 goto out_pci_disable_device;
3820 err = pci_request_regions(pdev, DRV_NAME);
3822 goto out_pci_disable_device;
3824 pci_set_drvdata(pdev, priv);
3827 /***********************
3828 * 3. Read REV register
3829 ***********************/
3830 priv->hw_base = pci_iomap(pdev, 0, 0);
3831 if (!priv->hw_base) {
3833 goto out_pci_release_regions;
3836 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3837 (unsigned long long) pci_resource_len(pdev, 0));
3838 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3840 iwl_hw_detect(priv);
3841 printk(KERN_INFO DRV_NAME
3842 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3843 priv->cfg->name, priv->hw_rev);
3845 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3846 * PCI Tx retries from interfering with C3 CPU state */
3847 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3850 err = priv->cfg->ops->lib->apm_ops.init(priv);
3852 IWL_DEBUG_INFO("Failed to init APMG\n");
3858 /* Read the EEPROM */
3859 err = iwl_eeprom_init(priv);
3861 IWL_ERROR("Unable to init EEPROM\n");
3864 err = iwl_eeprom_check_version(priv);
3868 /* extract MAC Address */
3869 iwl_eeprom_get_mac(priv, priv->mac_addr);
3870 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3871 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3873 /************************
3874 * 5. Setup HW constants
3875 ************************/
3876 if (iwl_set_hw_params(priv)) {
3877 IWL_ERROR("failed to set hw parameters\n");
3878 goto out_free_eeprom;
3881 /*******************
3883 *******************/
3885 err = iwl_init_drv(priv);
3887 goto out_free_eeprom;
3888 /* At this point both hw and priv are initialized. */
3890 /**********************************
3891 * 7. Initialize module parameters
3892 **********************************/
3894 /* Disable radio (SW RF KILL) via parameter when loading driver */
3895 if (priv->cfg->mod_params->disable) {
3896 set_bit(STATUS_RF_KILL_SW, &priv->status);
3897 IWL_DEBUG_INFO("Radio disabled.\n");
3900 /********************
3902 ********************/
3903 spin_lock_irqsave(&priv->lock, flags);
3904 iwl_disable_interrupts(priv);
3905 spin_unlock_irqrestore(&priv->lock, flags);
3907 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3909 IWL_ERROR("failed to create sysfs device attributes\n");
3910 goto out_uninit_drv;
3914 iwl_setup_deferred_work(priv);
3915 iwl_setup_rx_handlers(priv);
3917 /********************
3919 ********************/
3920 pci_save_state(pdev);
3921 pci_disable_device(pdev);
3923 /**********************************
3924 * 10. Setup and register mac80211
3925 **********************************/
3927 err = iwl_setup_mac(priv);
3929 goto out_remove_sysfs;
3931 err = iwl_dbgfs_register(priv, DRV_NAME);
3933 IWL_ERROR("failed to create debugfs files\n");
3935 err = iwl_rfkill_init(priv);
3937 IWL_ERROR("Unable to initialize RFKILL system. "
3938 "Ignoring error: %d\n", err);
3939 iwl_power_initialize(priv);
3943 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3945 iwl_uninit_drv(priv);
3947 iwl_eeprom_free(priv);
3949 pci_iounmap(pdev, priv->hw_base);
3950 out_pci_release_regions:
3951 pci_release_regions(pdev);
3952 pci_set_drvdata(pdev, NULL);
3953 out_pci_disable_device:
3954 pci_disable_device(pdev);
3955 out_ieee80211_free_hw:
3956 ieee80211_free_hw(priv->hw);
3961 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3963 struct iwl_priv *priv = pci_get_drvdata(pdev);
3964 unsigned long flags;
3969 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3971 iwl_dbgfs_unregister(priv);
3972 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3974 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3975 * to be called and iwl_down since we are removing the device
3976 * we need to set STATUS_EXIT_PENDING bit.
3978 set_bit(STATUS_EXIT_PENDING, &priv->status);
3979 if (priv->mac80211_registered) {
3980 ieee80211_unregister_hw(priv->hw);
3981 priv->mac80211_registered = 0;
3986 /* make sure we flush any pending irq or
3987 * tasklet for the driver
3989 spin_lock_irqsave(&priv->lock, flags);
3990 iwl_disable_interrupts(priv);
3991 spin_unlock_irqrestore(&priv->lock, flags);
3993 iwl_synchronize_irq(priv);
3995 iwl_rfkill_unregister(priv);
3996 iwl_dealloc_ucode_pci(priv);
3999 iwl_rx_queue_free(priv, &priv->rxq);
4000 iwl_hw_txq_ctx_free(priv);
4002 iwl_clear_stations_table(priv);
4003 iwl_eeprom_free(priv);
4006 /*netif_stop_queue(dev); */
4007 flush_workqueue(priv->workqueue);
4009 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4010 * priv->workqueue... so we can't take down the workqueue
4012 destroy_workqueue(priv->workqueue);
4013 priv->workqueue = NULL;
4015 pci_iounmap(pdev, priv->hw_base);
4016 pci_release_regions(pdev);
4017 pci_disable_device(pdev);
4018 pci_set_drvdata(pdev, NULL);
4020 iwl_uninit_drv(priv);
4022 if (priv->ibss_beacon)
4023 dev_kfree_skb(priv->ibss_beacon);
4025 ieee80211_free_hw(priv->hw);
4030 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4032 struct iwl_priv *priv = pci_get_drvdata(pdev);
4034 if (priv->is_open) {
4035 set_bit(STATUS_IN_SUSPEND, &priv->status);
4036 iwl_mac_stop(priv->hw);
4040 pci_set_power_state(pdev, PCI_D3hot);
4045 static int iwl_pci_resume(struct pci_dev *pdev)
4047 struct iwl_priv *priv = pci_get_drvdata(pdev);
4049 pci_set_power_state(pdev, PCI_D0);
4052 iwl_mac_start(priv->hw);
4054 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4058 #endif /* CONFIG_PM */
4060 /*****************************************************************************
4062 * driver and module entry point
4064 *****************************************************************************/
4066 /* Hardware specific file defines the PCI IDs table for that hardware module */
4067 static struct pci_device_id iwl_hw_card_ids[] = {
4068 #ifdef CONFIG_IWL4965
4069 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4070 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4071 #endif /* CONFIG_IWL4965 */
4072 #ifdef CONFIG_IWL5000
4073 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4074 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4075 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4076 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4077 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4078 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4079 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4080 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4081 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4082 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4083 /* 5350 WiFi/WiMax */
4084 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4085 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4086 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4087 /* 5150 Wifi/WiMax */
4088 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4089 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4090 #endif /* CONFIG_IWL5000 */
4094 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4096 static struct pci_driver iwl_driver = {
4098 .id_table = iwl_hw_card_ids,
4099 .probe = iwl_pci_probe,
4100 .remove = __devexit_p(iwl_pci_remove),
4102 .suspend = iwl_pci_suspend,
4103 .resume = iwl_pci_resume,
4107 static int __init iwl_init(void)
4111 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4112 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4114 ret = iwlagn_rate_control_register();
4116 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4120 ret = pci_register_driver(&iwl_driver);
4122 IWL_ERROR("Unable to initialize PCI module\n");
4123 goto error_register;
4129 iwlagn_rate_control_unregister();
4133 static void __exit iwl_exit(void)
4135 pci_unregister_driver(&iwl_driver);
4136 iwlagn_rate_control_unregister();
4139 module_exit(iwl_exit);
4140 module_init(iwl_init);