1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_MAX_NUM_QUEUES,
95 /* the rest are 0 by default */
98 /*************** STATION TABLE MANAGEMENT ****
99 * mac80211 should be examined to determine if sta_info is duplicating
100 * the functionality provided here
103 /**************************************************************/
104 #if 0 /* temporary disable till we add real remove station */
106 * iwl3945_remove_station - Remove driver's knowledge of station.
108 * NOTE: This does not remove station from device's station table.
110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
112 int index = IWL_INVALID_STATION;
116 spin_lock_irqsave(&priv->sta_lock, flags);
120 else if (is_broadcast_ether_addr(addr))
121 index = priv->hw_params.bcast_sta_id;
123 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
124 if (priv->stations_39[i].used &&
125 !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
131 if (unlikely(index == IWL_INVALID_STATION))
134 if (priv->stations_39[index].used) {
135 priv->stations_39[index].used = 0;
136 priv->num_stations--;
139 BUG_ON(priv->num_stations < 0);
142 spin_unlock_irqrestore(&priv->sta_lock, flags);
148 * iwl3945_clear_stations_table - Clear the driver's station table
150 * NOTE: This does not clear or otherwise alter the device's station table.
152 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
156 spin_lock_irqsave(&priv->sta_lock, flags);
158 priv->num_stations = 0;
159 memset(priv->stations_39, 0, sizeof(priv->stations_39));
161 spin_unlock_irqrestore(&priv->sta_lock, flags);
165 * iwl3945_add_station - Add station to station tables in driver and device
167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
170 int index = IWL_INVALID_STATION;
171 struct iwl3945_station_entry *station;
172 unsigned long flags_spin;
175 spin_lock_irqsave(&priv->sta_lock, flags_spin);
178 else if (is_broadcast_ether_addr(addr))
179 index = priv->hw_params.bcast_sta_id;
181 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
182 if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
188 if (!priv->stations_39[i].used &&
189 index == IWL_INVALID_STATION)
193 /* These two conditions has the same outcome but keep them separate
194 since they have different meaning */
195 if (unlikely(index == IWL_INVALID_STATION)) {
196 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
200 if (priv->stations_39[index].used &&
201 !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
202 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
206 IWL_DEBUG_ASSOC(priv, "Add STA ID %d: %pM\n", index, addr);
207 station = &priv->stations_39[index];
209 priv->num_stations++;
211 /* Set up the REPLY_ADD_STA command to send to device */
212 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
213 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
214 station->sta.mode = 0;
215 station->sta.sta.sta_id = index;
216 station->sta.station_flags = 0;
218 if (priv->band == IEEE80211_BAND_5GHZ)
219 rate = IWL_RATE_6M_PLCP;
221 rate = IWL_RATE_1M_PLCP;
223 /* Turn on both antennas for the station... */
224 station->sta.rate_n_flags =
225 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
227 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
229 /* Add station to device's station table */
230 iwl_send_add_sta(priv,
231 (struct iwl_addsta_cmd *)&station->sta, flags);
236 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
239 struct iwl_rx_packet *res = NULL;
240 struct iwl3945_rxon_assoc_cmd rxon_assoc;
241 struct iwl_host_cmd cmd = {
242 .id = REPLY_RXON_ASSOC,
243 .len = sizeof(rxon_assoc),
244 .meta.flags = CMD_WANT_SKB,
247 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
248 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
250 if ((rxon1->flags == rxon2->flags) &&
251 (rxon1->filter_flags == rxon2->filter_flags) &&
252 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
253 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
254 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
258 rxon_assoc.flags = priv->staging_rxon.flags;
259 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
260 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
261 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
262 rxon_assoc.reserved = 0;
264 rc = iwl_send_cmd_sync(priv, &cmd);
268 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
269 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
270 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
274 priv->alloc_rxb_skb--;
275 dev_kfree_skb_any(cmd.meta.u.skb);
281 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
282 * @priv: eeprom and antenna fields are used to determine antenna flags
284 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
285 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
287 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
288 * IWL_ANTENNA_MAIN - Force MAIN antenna
289 * IWL_ANTENNA_AUX - Force AUX antenna
291 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
293 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
295 switch (iwl3945_mod_params.antenna) {
296 case IWL_ANTENNA_DIVERSITY:
299 case IWL_ANTENNA_MAIN:
300 if (eeprom->antenna_switch_type)
301 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
302 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
304 case IWL_ANTENNA_AUX:
305 if (eeprom->antenna_switch_type)
306 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
307 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
310 /* bad antenna selector value */
311 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
312 iwl3945_mod_params.antenna);
314 return 0; /* "diversity" is default if error */
318 * iwl3945_commit_rxon - commit staging_rxon to hardware
320 * The RXON command in staging_rxon is committed to the hardware and
321 * the active_rxon structure is updated with the new data. This
322 * function correctly transitions out of the RXON_ASSOC_MSK state if
323 * a HW tune is required based on the RXON structure changes.
325 static int iwl3945_commit_rxon(struct iwl_priv *priv)
327 /* cast away the const for active_rxon in this function */
328 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
329 struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
332 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
334 if (!iwl_is_alive(priv))
337 /* always get timestamp with Rx frame */
338 staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
341 staging_rxon->flags &=
342 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
343 staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
345 rc = iwl_check_rxon_cmd(priv);
347 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
351 /* If we don't need to send a full RXON, we can use
352 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
353 * and other flags for the current radio configuration. */
354 if (!iwl_full_rxon_required(priv)) {
355 rc = iwl3945_send_rxon_assoc(priv);
357 IWL_ERR(priv, "Error setting RXON_ASSOC "
358 "configuration (%d).\n", rc);
362 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
367 /* If we are currently associated and the new config requires
368 * an RXON_ASSOC and the new config wants the associated mask enabled,
369 * we must clear the associated from the active configuration
370 * before we apply the new config */
371 if (iwl_is_associated(priv) && new_assoc) {
372 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
373 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
376 * reserved4 and 5 could have been filled by the iwlcore code.
377 * Let's clear them before pushing to the 3945.
379 active_rxon->reserved4 = 0;
380 active_rxon->reserved5 = 0;
381 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
382 sizeof(struct iwl3945_rxon_cmd),
385 /* If the mask clearing failed then we set
386 * active_rxon back to what it was previously */
388 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
389 IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
390 "configuration (%d).\n", rc);
395 IWL_DEBUG_INFO(priv, "Sending RXON\n"
396 "* with%s RXON_FILTER_ASSOC_MSK\n"
399 (new_assoc ? "" : "out"),
400 le16_to_cpu(staging_rxon->channel),
401 staging_rxon->bssid_addr);
404 * reserved4 and 5 could have been filled by the iwlcore code.
405 * Let's clear them before pushing to the 3945.
407 staging_rxon->reserved4 = 0;
408 staging_rxon->reserved5 = 0;
410 iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
412 /* Apply the new configuration */
413 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
414 sizeof(struct iwl3945_rxon_cmd),
417 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
421 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
423 iwl3945_clear_stations_table(priv);
425 /* If we issue a new RXON command which required a tune then we must
426 * send a new TXPOWER command or we won't be able to Tx any frames */
427 rc = priv->cfg->ops->lib->send_tx_power(priv);
429 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
433 /* Add the broadcast address so we can send broadcast frames */
434 if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
435 IWL_INVALID_STATION) {
436 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
440 /* If we have set the ASSOC_MSK and we are in BSS mode then
441 * add the IWL_AP_ID to the station rate table */
442 if (iwl_is_associated(priv) &&
443 (priv->iw_mode == NL80211_IFTYPE_STATION))
444 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr,
446 == IWL_INVALID_STATION) {
447 IWL_ERR(priv, "Error adding AP address for transmit\n");
451 /* Init the hardware's rate fallback order based on the band */
452 rc = iwl3945_init_hw_rate_table(priv);
454 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
461 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
462 struct ieee80211_key_conf *keyconf,
466 __le16 key_flags = 0;
469 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
470 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
472 if (sta_id == priv->hw_params.bcast_sta_id)
473 key_flags |= STA_KEY_MULTICAST_MSK;
475 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
476 keyconf->hw_key_idx = keyconf->keyidx;
477 key_flags &= ~STA_KEY_FLG_INVALID;
479 spin_lock_irqsave(&priv->sta_lock, flags);
480 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
481 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
482 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
485 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
488 if ((priv->stations_39[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
489 == STA_KEY_FLG_NO_ENC)
490 priv->stations_39[sta_id].sta.key.key_offset =
491 iwl_get_free_ucode_key_index(priv);
492 /* else, we are overriding an existing key => no need to allocated room
495 WARN(priv->stations_39[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
496 "no space for a new key");
498 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
499 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
500 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
502 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
504 ret = iwl_send_add_sta(priv,
505 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, CMD_ASYNC);
507 spin_unlock_irqrestore(&priv->sta_lock, flags);
512 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
513 struct ieee80211_key_conf *keyconf,
519 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
520 struct ieee80211_key_conf *keyconf,
526 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
530 spin_lock_irqsave(&priv->sta_lock, flags);
531 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
532 memset(&priv->stations_39[sta_id].sta.key, 0,
533 sizeof(struct iwl4965_keyinfo));
534 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
535 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
536 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
537 spin_unlock_irqrestore(&priv->sta_lock, flags);
539 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
540 iwl_send_add_sta(priv,
541 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
545 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
546 struct ieee80211_key_conf *keyconf, u8 sta_id)
550 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
552 switch (keyconf->alg) {
554 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
557 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
560 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
563 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
567 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
568 keyconf->alg, keyconf->keylen, keyconf->keyidx,
574 static int iwl3945_remove_static_key(struct iwl_priv *priv)
576 int ret = -EOPNOTSUPP;
581 static int iwl3945_set_static_key(struct iwl_priv *priv,
582 struct ieee80211_key_conf *key)
584 if (key->alg == ALG_WEP)
587 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
591 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
593 struct list_head *element;
595 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
598 while (!list_empty(&priv->free_frames)) {
599 element = priv->free_frames.next;
601 kfree(list_entry(element, struct iwl3945_frame, list));
602 priv->frames_count--;
605 if (priv->frames_count) {
606 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
608 priv->frames_count = 0;
612 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
614 struct iwl3945_frame *frame;
615 struct list_head *element;
616 if (list_empty(&priv->free_frames)) {
617 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
619 IWL_ERR(priv, "Could not allocate frame!\n");
623 priv->frames_count++;
627 element = priv->free_frames.next;
629 return list_entry(element, struct iwl3945_frame, list);
632 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
634 memset(frame, 0, sizeof(*frame));
635 list_add(&frame->list, &priv->free_frames);
638 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
639 struct ieee80211_hdr *hdr,
643 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
644 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
645 (priv->iw_mode != NL80211_IFTYPE_AP)))
648 if (priv->ibss_beacon->len > left)
651 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
653 return priv->ibss_beacon->len;
656 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
658 struct iwl3945_frame *frame;
659 unsigned int frame_size;
663 frame = iwl3945_get_free_frame(priv);
666 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
671 rate = iwl_rate_get_lowest_plcp(priv);
673 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
675 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
678 iwl3945_free_frame(priv, frame);
683 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
685 if (priv->shared_virt)
686 pci_free_consistent(priv->pci_dev,
687 sizeof(struct iwl3945_shared),
692 #define MAX_UCODE_BEACON_INTERVAL 1024
693 #define INTEL_CONN_LISTEN_INTERVAL cpu_to_le16(0xA)
695 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
698 u16 beacon_factor = 0;
701 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
702 / MAX_UCODE_BEACON_INTERVAL;
703 new_val = beacon_val / beacon_factor;
705 return cpu_to_le16(new_val);
708 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
710 u64 interval_tm_unit;
713 struct ieee80211_conf *conf = NULL;
716 conf = ieee80211_get_hw_conf(priv->hw);
718 spin_lock_irqsave(&priv->lock, flags);
719 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
720 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
722 tsf = priv->timestamp;
724 beacon_int = priv->beacon_int;
725 spin_unlock_irqrestore(&priv->lock, flags);
727 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
728 if (beacon_int == 0) {
729 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
730 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
732 priv->rxon_timing.beacon_interval =
733 cpu_to_le16(beacon_int);
734 priv->rxon_timing.beacon_interval =
735 iwl3945_adjust_beacon_interval(
736 le16_to_cpu(priv->rxon_timing.beacon_interval));
739 priv->rxon_timing.atim_window = 0;
741 priv->rxon_timing.beacon_interval =
742 iwl3945_adjust_beacon_interval(conf->beacon_int);
743 /* TODO: we need to get atim_window from upper stack
744 * for now we set to 0 */
745 priv->rxon_timing.atim_window = 0;
749 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
750 result = do_div(tsf, interval_tm_unit);
751 priv->rxon_timing.beacon_init_val =
752 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
754 IWL_DEBUG_ASSOC(priv,
755 "beacon interval %d beacon timer %d beacon tim %d\n",
756 le16_to_cpu(priv->rxon_timing.beacon_interval),
757 le32_to_cpu(priv->rxon_timing.beacon_init_val),
758 le16_to_cpu(priv->rxon_timing.atim_window));
761 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
763 if (mode == NL80211_IFTYPE_ADHOC) {
764 const struct iwl_channel_info *ch_info;
766 ch_info = iwl_get_channel_info(priv,
768 le16_to_cpu(priv->staging_rxon.channel));
770 if (!ch_info || !is_channel_ibss(ch_info)) {
771 IWL_ERR(priv, "channel %d not IBSS channel\n",
772 le16_to_cpu(priv->staging_rxon.channel));
777 iwl_connection_init_rx_config(priv, mode);
779 iwl3945_clear_stations_table(priv);
781 /* don't commit rxon if rf-kill is on*/
782 if (!iwl_is_ready_rf(priv))
785 cancel_delayed_work(&priv->scan_check);
786 if (iwl_scan_cancel_timeout(priv, 100)) {
787 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
788 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
792 iwl3945_commit_rxon(priv);
797 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
798 struct ieee80211_tx_info *info,
800 struct sk_buff *skb_frag,
803 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
804 struct iwl3945_hw_key *keyinfo =
805 &priv->stations_39[sta_id].keyinfo;
807 switch (keyinfo->alg) {
809 tx->sec_ctl = TX_CMD_SEC_CCM;
810 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
811 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
818 tx->sec_ctl = TX_CMD_SEC_WEP |
819 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
821 if (keyinfo->keylen == 13)
822 tx->sec_ctl |= TX_CMD_SEC_KEY128;
824 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
826 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
827 "with key %d\n", info->control.hw_key->hw_key_idx);
831 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
837 * handle build REPLY_TX command notification.
839 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
841 struct ieee80211_tx_info *info,
842 struct ieee80211_hdr *hdr, u8 std_id)
844 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
845 __le32 tx_flags = tx->tx_flags;
846 __le16 fc = hdr->frame_control;
847 u8 rc_flags = info->control.rates[0].flags;
849 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
850 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
851 tx_flags |= TX_CMD_FLG_ACK_MSK;
852 if (ieee80211_is_mgmt(fc))
853 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
854 if (ieee80211_is_probe_resp(fc) &&
855 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
856 tx_flags |= TX_CMD_FLG_TSF_MSK;
858 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
859 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
863 if (ieee80211_has_morefrags(fc))
864 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
866 if (ieee80211_is_data_qos(fc)) {
867 u8 *qc = ieee80211_get_qos_ctl(hdr);
868 tx->tid_tspec = qc[0] & 0xf;
869 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
871 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
874 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
875 tx_flags |= TX_CMD_FLG_RTS_MSK;
876 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
877 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
878 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
879 tx_flags |= TX_CMD_FLG_CTS_MSK;
882 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
883 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
885 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
886 if (ieee80211_is_mgmt(fc)) {
887 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
888 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
890 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
892 tx->timeout.pm_frame_timeout = 0;
893 #ifdef CONFIG_IWLWIFI_LEDS
894 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
899 tx->tx_flags = tx_flags;
900 tx->next_frame_len = 0;
904 * iwl3945_get_sta_id - Find station's index within station table
906 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
909 u16 fc = le16_to_cpu(hdr->frame_control);
911 /* If this frame is broadcast or management, use broadcast station id */
912 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
913 is_multicast_ether_addr(hdr->addr1))
914 return priv->hw_params.bcast_sta_id;
916 switch (priv->iw_mode) {
918 /* If we are a client station in a BSS network, use the special
919 * AP station entry (that's the only station we communicate with) */
920 case NL80211_IFTYPE_STATION:
923 /* If we are an AP, then find the station, or use BCAST */
924 case NL80211_IFTYPE_AP:
925 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
926 if (sta_id != IWL_INVALID_STATION)
928 return priv->hw_params.bcast_sta_id;
930 /* If this frame is going out to an IBSS network, find the station,
931 * or create a new station table entry */
932 case NL80211_IFTYPE_ADHOC: {
933 /* Create new station table entry */
934 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
935 if (sta_id != IWL_INVALID_STATION)
938 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
940 if (sta_id != IWL_INVALID_STATION)
943 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
944 "Defaulting to broadcast...\n",
946 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
947 return priv->hw_params.bcast_sta_id;
949 /* If we are in monitor mode, use BCAST. This is required for
950 * packet injection. */
951 case NL80211_IFTYPE_MONITOR:
952 return priv->hw_params.bcast_sta_id;
955 IWL_WARN(priv, "Unknown mode of operation: %d\n",
957 return priv->hw_params.bcast_sta_id;
962 * start REPLY_TX command process
964 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
966 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
967 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
968 struct iwl3945_tx_cmd *tx;
969 struct iwl_tx_queue *txq = NULL;
970 struct iwl_queue *q = NULL;
971 struct iwl_cmd *out_cmd = NULL;
972 dma_addr_t phys_addr;
973 dma_addr_t txcmd_phys;
974 int txq_id = skb_get_queue_mapping(skb);
975 u16 len, idx, len_org, hdr_len;
982 u8 wait_write_ptr = 0;
987 spin_lock_irqsave(&priv->lock, flags);
988 if (iwl_is_rfkill(priv)) {
989 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
993 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
994 IWL_ERR(priv, "ERROR: No TX rate available.\n");
998 unicast = !is_multicast_ether_addr(hdr->addr1);
1001 fc = hdr->frame_control;
1003 #ifdef CONFIG_IWLWIFI_DEBUG
1004 if (ieee80211_is_auth(fc))
1005 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
1006 else if (ieee80211_is_assoc_req(fc))
1007 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
1008 else if (ieee80211_is_reassoc_req(fc))
1009 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
1012 /* drop all data frame if we are not associated */
1013 if (ieee80211_is_data(fc) &&
1014 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1015 (!iwl_is_associated(priv) ||
1016 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1017 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
1021 spin_unlock_irqrestore(&priv->lock, flags);
1023 hdr_len = ieee80211_hdrlen(fc);
1025 /* Find (or create) index into station table for destination station */
1026 sta_id = iwl3945_get_sta_id(priv, hdr);
1027 if (sta_id == IWL_INVALID_STATION) {
1028 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
1033 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
1035 if (ieee80211_is_data_qos(fc)) {
1036 qc = ieee80211_get_qos_ctl(hdr);
1037 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1038 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1040 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1042 cpu_to_le16(IEEE80211_SCTL_FRAG));
1046 /* Descriptor for chosen Tx queue */
1047 txq = &priv->txq[txq_id];
1050 spin_lock_irqsave(&priv->lock, flags);
1052 idx = get_cmd_index(q, q->write_ptr, 0);
1054 /* Set up driver data for this TFD */
1055 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1056 txq->txb[q->write_ptr].skb[0] = skb;
1058 /* Init first empty entry in queue's array of Tx/cmd buffers */
1059 out_cmd = txq->cmd[idx];
1060 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1061 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1062 memset(tx, 0, sizeof(*tx));
1065 * Set up the Tx-command (not MAC!) header.
1066 * Store the chosen Tx queue and TFD index within the sequence field;
1067 * after Tx, uCode's Tx response will return this value so driver can
1068 * locate the frame within the tx queue and do post-tx processing.
1070 out_cmd->hdr.cmd = REPLY_TX;
1071 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1072 INDEX_TO_SEQ(q->write_ptr)));
1074 /* Copy MAC header from skb into command buffer */
1075 memcpy(tx->hdr, hdr, hdr_len);
1078 * Use the first empty entry in this queue's command buffer array
1079 * to contain the Tx command and MAC header concatenated together
1080 * (payload data will be in another buffer).
1081 * Size of this varies, due to varying MAC header length.
1082 * If end is not dword aligned, we'll have 2 extra bytes at the end
1083 * of the MAC header (device reads on dword boundaries).
1084 * We'll tell device about this padding later.
1086 len = sizeof(struct iwl3945_tx_cmd) +
1087 sizeof(struct iwl_cmd_header) + hdr_len;
1090 len = (len + 3) & ~3;
1097 /* Physical address of this Tx command's header (not MAC header!),
1098 * within command buffer array. */
1099 txcmd_phys = pci_map_single(priv->pci_dev,
1100 out_cmd, sizeof(struct iwl_cmd),
1102 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1103 pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1104 /* Add buffer containing Tx command and MAC(!) header to TFD's
1106 txcmd_phys += offsetof(struct iwl_cmd, hdr);
1108 /* Add buffer containing Tx command and MAC(!) header to TFD's
1110 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1111 txcmd_phys, len, 1, 0);
1113 if (info->control.hw_key)
1114 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
1116 /* Set up TFD's 2nd entry to point directly to remainder of skb,
1117 * if any (802.11 null frames have no payload). */
1118 len = skb->len - hdr_len;
1120 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1121 len, PCI_DMA_TODEVICE);
1122 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1127 /* Total # bytes to be transmitted */
1128 len = (u16)skb->len;
1129 tx->len = cpu_to_le16(len);
1131 /* TODO need this for burst mode later on */
1132 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1134 /* set is_hcca to 0; it probably will never be implemented */
1135 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1137 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1138 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1140 if (!ieee80211_has_morefrags(hdr->frame_control)) {
1141 txq->need_update = 1;
1143 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1146 txq->need_update = 0;
1149 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
1150 le16_to_cpu(out_cmd->hdr.sequence));
1151 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
1152 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1153 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1154 ieee80211_hdrlen(fc));
1156 /* Tell device the write index *just past* this latest filled TFD */
1157 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1158 rc = iwl_txq_update_write_ptr(priv, txq);
1159 spin_unlock_irqrestore(&priv->lock, flags);
1164 if ((iwl_queue_space(q) < q->high_mark)
1165 && priv->mac80211_registered) {
1166 if (wait_write_ptr) {
1167 spin_lock_irqsave(&priv->lock, flags);
1168 txq->need_update = 1;
1169 iwl_txq_update_write_ptr(priv, txq);
1170 spin_unlock_irqrestore(&priv->lock, flags);
1173 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
1179 spin_unlock_irqrestore(&priv->lock, flags);
1184 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1186 #include "iwl-spectrum.h"
1188 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1189 #define BEACON_TIME_MASK_HIGH 0xFF000000
1190 #define TIME_UNIT 1024
1193 * extended beacon time format
1194 * time in usec will be changed into a 32-bit value in 8:24 format
1195 * the high 1 byte is the beacon counts
1196 * the lower 3 bytes is the time in usec within one beacon interval
1199 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1203 u32 interval = beacon_interval * 1024;
1205 if (!interval || !usec)
1208 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1209 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1211 return (quot << 24) + rem;
1214 /* base is usually what we get from ucode with each received frame,
1215 * the same as HW timer counter counting down
1218 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1220 u32 base_low = base & BEACON_TIME_MASK_LOW;
1221 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1222 u32 interval = beacon_interval * TIME_UNIT;
1223 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1224 (addon & BEACON_TIME_MASK_HIGH);
1226 if (base_low > addon_low)
1227 res += base_low - addon_low;
1228 else if (base_low < addon_low) {
1229 res += interval + base_low - addon_low;
1234 return cpu_to_le32(res);
1237 static int iwl3945_get_measurement(struct iwl_priv *priv,
1238 struct ieee80211_measurement_params *params,
1241 struct iwl_spectrum_cmd spectrum;
1242 struct iwl_rx_packet *res;
1243 struct iwl_host_cmd cmd = {
1244 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1245 .data = (void *)&spectrum,
1246 .meta.flags = CMD_WANT_SKB,
1248 u32 add_time = le64_to_cpu(params->start_time);
1250 int spectrum_resp_status;
1251 int duration = le16_to_cpu(params->duration);
1253 if (iwl_is_associated(priv))
1255 iwl3945_usecs_to_beacons(
1256 le64_to_cpu(params->start_time) - priv->last_tsf,
1257 le16_to_cpu(priv->rxon_timing.beacon_interval));
1259 memset(&spectrum, 0, sizeof(spectrum));
1261 spectrum.channel_count = cpu_to_le16(1);
1263 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1264 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1265 cmd.len = sizeof(spectrum);
1266 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1268 if (iwl_is_associated(priv))
1269 spectrum.start_time =
1270 iwl3945_add_beacon_time(priv->last_beacon_time,
1272 le16_to_cpu(priv->rxon_timing.beacon_interval));
1274 spectrum.start_time = 0;
1276 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1277 spectrum.channels[0].channel = params->channel;
1278 spectrum.channels[0].type = type;
1279 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1280 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1281 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1283 rc = iwl_send_cmd_sync(priv, &cmd);
1287 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1288 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1289 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1293 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1294 switch (spectrum_resp_status) {
1295 case 0: /* Command will be handled */
1296 if (res->u.spectrum.id != 0xff) {
1297 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1298 res->u.spectrum.id);
1299 priv->measurement_status &= ~MEASUREMENT_READY;
1301 priv->measurement_status |= MEASUREMENT_ACTIVE;
1305 case 1: /* Command will not be handled */
1310 dev_kfree_skb_any(cmd.meta.u.skb);
1316 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1317 struct iwl_rx_mem_buffer *rxb)
1319 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1320 struct iwl_alive_resp *palive;
1321 struct delayed_work *pwork;
1323 palive = &pkt->u.alive_frame;
1325 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1327 palive->is_valid, palive->ver_type,
1328 palive->ver_subtype);
1330 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1331 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1332 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1333 sizeof(struct iwl_alive_resp));
1334 pwork = &priv->init_alive_start;
1336 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1337 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1338 sizeof(struct iwl_alive_resp));
1339 pwork = &priv->alive_start;
1340 iwl3945_disable_events(priv);
1343 /* We delay the ALIVE response by 5ms to
1344 * give the HW RF Kill time to activate... */
1345 if (palive->is_valid == UCODE_VALID_OK)
1346 queue_delayed_work(priv->workqueue, pwork,
1347 msecs_to_jiffies(5));
1349 IWL_WARN(priv, "uCode did not respond OK.\n");
1352 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1353 struct iwl_rx_mem_buffer *rxb)
1355 #ifdef CONFIG_IWLWIFI_DEBUG
1356 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1359 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1363 static void iwl3945_bg_beacon_update(struct work_struct *work)
1365 struct iwl_priv *priv =
1366 container_of(work, struct iwl_priv, beacon_update);
1367 struct sk_buff *beacon;
1369 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1370 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1373 IWL_ERR(priv, "update beacon failed\n");
1377 mutex_lock(&priv->mutex);
1378 /* new beacon skb is allocated every time; dispose previous.*/
1379 if (priv->ibss_beacon)
1380 dev_kfree_skb(priv->ibss_beacon);
1382 priv->ibss_beacon = beacon;
1383 mutex_unlock(&priv->mutex);
1385 iwl3945_send_beacon_cmd(priv);
1388 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1389 struct iwl_rx_mem_buffer *rxb)
1391 #ifdef CONFIG_IWLWIFI_DEBUG
1392 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1393 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1394 u8 rate = beacon->beacon_notify_hdr.rate;
1396 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1397 "tsf %d %d rate %d\n",
1398 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1399 beacon->beacon_notify_hdr.failure_frame,
1400 le32_to_cpu(beacon->ibss_mgr_status),
1401 le32_to_cpu(beacon->high_tsf),
1402 le32_to_cpu(beacon->low_tsf), rate);
1405 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1406 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1407 queue_work(priv->workqueue, &priv->beacon_update);
1410 /* Handle notification from uCode that card's power state is changing
1411 * due to software, hardware, or critical temperature RFKILL */
1412 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1413 struct iwl_rx_mem_buffer *rxb)
1415 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1416 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1417 unsigned long status = priv->status;
1419 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1420 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1421 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1423 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1424 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1426 if (flags & HW_CARD_DISABLED)
1427 set_bit(STATUS_RF_KILL_HW, &priv->status);
1429 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1432 if (flags & SW_CARD_DISABLED)
1433 set_bit(STATUS_RF_KILL_SW, &priv->status);
1435 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1437 iwl_scan_cancel(priv);
1439 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1440 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1441 (test_bit(STATUS_RF_KILL_SW, &status) !=
1442 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1443 queue_work(priv->workqueue, &priv->rf_kill);
1445 wake_up_interruptible(&priv->wait_command_queue);
1449 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1451 * Setup the RX handlers for each of the reply types sent from the uCode
1454 * This function chains into the hardware specific files for them to setup
1455 * any hardware specific handlers as well.
1457 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1459 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1460 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1461 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1462 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1463 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1464 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1465 iwl_rx_pm_debug_statistics_notif;
1466 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1469 * The same handler is used for both the REPLY to a discrete
1470 * statistics request from the host as well as for the periodic
1471 * statistics notifications (after received beacons) from the uCode.
1473 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1474 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1476 iwl_setup_spectrum_handlers(priv);
1477 iwl_setup_rx_scan_handlers(priv);
1478 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1480 /* Set up hardware specific Rx handlers */
1481 iwl3945_hw_rx_handler_setup(priv);
1484 /************************** RX-FUNCTIONS ****************************/
1486 * Rx theory of operation
1488 * The host allocates 32 DMA target addresses and passes the host address
1489 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1493 * The host/firmware share two index registers for managing the Rx buffers.
1495 * The READ index maps to the first position that the firmware may be writing
1496 * to -- the driver can read up to (but not including) this position and get
1498 * The READ index is managed by the firmware once the card is enabled.
1500 * The WRITE index maps to the last position the driver has read from -- the
1501 * position preceding WRITE is the last slot the firmware can place a packet.
1503 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1506 * During initialization, the host sets up the READ queue position to the first
1507 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1509 * When the firmware places a packet in a buffer, it will advance the READ index
1510 * and fire the RX interrupt. The driver can then query the READ index and
1511 * process as many packets as possible, moving the WRITE index forward as it
1512 * resets the Rx queue buffers with new memory.
1514 * The management in the driver is as follows:
1515 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1516 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1517 * to replenish the iwl->rxq->rx_free.
1518 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1519 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1520 * 'processed' and 'read' driver indexes as well)
1521 * + A received packet is processed and handed to the kernel network stack,
1522 * detached from the iwl->rxq. The driver 'processed' index is updated.
1523 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1524 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1525 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1526 * were enough free buffers and RX_STALLED is set it is cleared.
1531 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1532 * iwl3945_rx_queue_restock
1533 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1534 * queue, updates firmware pointers, and updates
1535 * the WRITE index. If insufficient rx_free buffers
1536 * are available, schedules iwl3945_rx_replenish
1538 * -- enable interrupts --
1539 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1540 * READ INDEX, detaching the SKB from the pool.
1541 * Moves the packet buffer from queue to rx_used.
1542 * Calls iwl3945_rx_queue_restock to refill any empty
1549 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1551 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1552 dma_addr_t dma_addr)
1554 return cpu_to_le32((u32)dma_addr);
1558 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1560 * If there are slots in the RX queue that need to be restocked,
1561 * and we have free pre-allocated buffers, fill the ranks as much
1562 * as we can, pulling from rx_free.
1564 * This moves the 'write' index forward to catch up with 'processed', and
1565 * also updates the memory address in the firmware to reference the new
1568 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1570 struct iwl_rx_queue *rxq = &priv->rxq;
1571 struct list_head *element;
1572 struct iwl_rx_mem_buffer *rxb;
1573 unsigned long flags;
1576 spin_lock_irqsave(&rxq->lock, flags);
1577 write = rxq->write & ~0x7;
1578 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1579 /* Get next free Rx buffer, remove from free list */
1580 element = rxq->rx_free.next;
1581 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1584 /* Point to Rx buffer via next RBD in circular buffer */
1585 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1586 rxq->queue[rxq->write] = rxb;
1587 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1590 spin_unlock_irqrestore(&rxq->lock, flags);
1591 /* If the pre-allocated buffer pool is dropping low, schedule to
1593 if (rxq->free_count <= RX_LOW_WATERMARK)
1594 queue_work(priv->workqueue, &priv->rx_replenish);
1597 /* If we've added more space for the firmware to place data, tell it.
1598 * Increment device's write pointer in multiples of 8. */
1599 if ((write != (rxq->write & ~0x7))
1600 || (abs(rxq->write - rxq->read) > 7)) {
1601 spin_lock_irqsave(&rxq->lock, flags);
1602 rxq->need_update = 1;
1603 spin_unlock_irqrestore(&rxq->lock, flags);
1604 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1613 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1615 * When moving to rx_free an SKB is allocated for the slot.
1617 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1618 * This is called as a scheduled work item (except for during initialization)
1620 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1622 struct iwl_rx_queue *rxq = &priv->rxq;
1623 struct list_head *element;
1624 struct iwl_rx_mem_buffer *rxb;
1625 unsigned long flags;
1626 spin_lock_irqsave(&rxq->lock, flags);
1627 while (!list_empty(&rxq->rx_used)) {
1628 element = rxq->rx_used.next;
1629 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1631 /* Alloc a new receive buffer */
1633 alloc_skb(priv->hw_params.rx_buf_size,
1634 __GFP_NOWARN | GFP_ATOMIC);
1636 if (net_ratelimit())
1637 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1638 /* We don't reschedule replenish work here -- we will
1639 * call the restock method and if it still needs
1640 * more buffers it will schedule replenish */
1644 /* If radiotap head is required, reserve some headroom here.
1645 * The physical head count is a variable rx_stats->phy_count.
1646 * We reserve 4 bytes here. Plus these extra bytes, the
1647 * headroom of the physical head should be enough for the
1648 * radiotap head that iwl3945 supported. See iwl3945_rt.
1650 skb_reserve(rxb->skb, 4);
1652 priv->alloc_rxb_skb++;
1655 /* Get physical address of RB/SKB */
1656 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1658 priv->hw_params.rx_buf_size,
1659 PCI_DMA_FROMDEVICE);
1660 list_add_tail(&rxb->list, &rxq->rx_free);
1663 spin_unlock_irqrestore(&rxq->lock, flags);
1667 * this should be called while priv->lock is locked
1669 static void __iwl3945_rx_replenish(void *data)
1671 struct iwl_priv *priv = data;
1673 iwl3945_rx_allocate(priv);
1674 iwl3945_rx_queue_restock(priv);
1678 void iwl3945_rx_replenish(void *data)
1680 struct iwl_priv *priv = data;
1681 unsigned long flags;
1683 iwl3945_rx_allocate(priv);
1685 spin_lock_irqsave(&priv->lock, flags);
1686 iwl3945_rx_queue_restock(priv);
1687 spin_unlock_irqrestore(&priv->lock, flags);
1690 /* Convert linear signal-to-noise ratio into dB */
1691 static u8 ratio2dB[100] = {
1692 /* 0 1 2 3 4 5 6 7 8 9 */
1693 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1694 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1695 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1696 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1697 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1698 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1699 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1700 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1701 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1702 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1705 /* Calculates a relative dB value from a ratio of linear
1706 * (i.e. not dB) signal levels.
1707 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1708 int iwl3945_calc_db_from_ratio(int sig_ratio)
1710 /* 1000:1 or higher just report as 60 dB */
1711 if (sig_ratio >= 1000)
1714 /* 100:1 or higher, divide by 10 and use table,
1715 * add 20 dB to make up for divide by 10 */
1716 if (sig_ratio >= 100)
1717 return 20 + (int)ratio2dB[sig_ratio/10];
1719 /* We shouldn't see this */
1723 /* Use table for ratios 1:1 - 99:1 */
1724 return (int)ratio2dB[sig_ratio];
1727 #define PERFECT_RSSI (-20) /* dBm */
1728 #define WORST_RSSI (-95) /* dBm */
1729 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1731 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1732 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1733 * about formulas used below. */
1734 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1737 int degradation = PERFECT_RSSI - rssi_dbm;
1739 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1740 * as indicator; formula is (signal dbm - noise dbm).
1741 * SNR at or above 40 is a great signal (100%).
1742 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1743 * Weakest usable signal is usually 10 - 15 dB SNR. */
1745 if (rssi_dbm - noise_dbm >= 40)
1747 else if (rssi_dbm < noise_dbm)
1749 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1751 /* Else use just the signal level.
1752 * This formula is a least squares fit of data points collected and
1753 * compared with a reference system that had a percentage (%) display
1754 * for signal quality. */
1756 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1757 (15 * RSSI_RANGE + 62 * degradation)) /
1758 (RSSI_RANGE * RSSI_RANGE);
1762 else if (sig_qual < 1)
1769 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1771 * Uses the priv->rx_handlers callback function array to invoke
1772 * the appropriate handlers, including command responses,
1773 * frame-received notifications, and other notifications.
1775 static void iwl3945_rx_handle(struct iwl_priv *priv)
1777 struct iwl_rx_mem_buffer *rxb;
1778 struct iwl_rx_packet *pkt;
1779 struct iwl_rx_queue *rxq = &priv->rxq;
1782 unsigned long flags;
1786 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1787 * buffer that the driver may process (last buffer filled by ucode). */
1788 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1791 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1793 /* Rx interrupt, but nothing sent from uCode */
1795 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1798 rxb = rxq->queue[i];
1800 /* If an RXB doesn't have a Rx queue slot associated with it,
1801 * then a bug has been introduced in the queue refilling
1802 * routines -- catch it here */
1803 BUG_ON(rxb == NULL);
1805 rxq->queue[i] = NULL;
1807 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
1808 priv->hw_params.rx_buf_size,
1809 PCI_DMA_FROMDEVICE);
1810 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1812 /* Reclaim a command buffer only if this packet is a response
1813 * to a (driver-originated) command.
1814 * If the packet (e.g. Rx frame) originated from uCode,
1815 * there is no command buffer to reclaim.
1816 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1817 * but apparently a few don't get set; catch them here. */
1818 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1819 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1820 (pkt->hdr.cmd != REPLY_TX);
1822 /* Based on type of command response or notification,
1823 * handle those that need handling via function in
1824 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1825 if (priv->rx_handlers[pkt->hdr.cmd]) {
1826 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1827 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1828 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1829 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1831 /* No handling needed */
1832 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1833 "r %d i %d No handler needed for %s, 0x%02x\n",
1834 r, i, get_cmd_string(pkt->hdr.cmd),
1839 /* Invoke any callbacks, transfer the skb to caller, and
1840 * fire off the (possibly) blocking iwl_send_cmd()
1841 * as we reclaim the driver command queue */
1842 if (rxb && rxb->skb)
1843 iwl_tx_cmd_complete(priv, rxb);
1845 IWL_WARN(priv, "Claim null rxb?\n");
1848 /* For now we just don't re-use anything. We can tweak this
1849 * later to try and re-use notification packets and SKBs that
1850 * fail to Rx correctly */
1851 if (rxb->skb != NULL) {
1852 priv->alloc_rxb_skb--;
1853 dev_kfree_skb_any(rxb->skb);
1857 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1858 priv->hw_params.rx_buf_size,
1859 PCI_DMA_FROMDEVICE);
1860 spin_lock_irqsave(&rxq->lock, flags);
1861 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1862 spin_unlock_irqrestore(&rxq->lock, flags);
1863 i = (i + 1) & RX_QUEUE_MASK;
1864 /* If there are a lot of unused frames,
1865 * restock the Rx queue so ucode won't assert. */
1870 __iwl3945_rx_replenish(priv);
1876 /* Backtrack one entry */
1878 iwl3945_rx_queue_restock(priv);
1881 /* call this function to flush any scheduled tasklet */
1882 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1884 /* wait to make sure we flush pending tasklet*/
1885 synchronize_irq(priv->pci_dev->irq);
1886 tasklet_kill(&priv->irq_tasklet);
1889 static const char *desc_lookup(int i)
1897 return "BAD_CHECKSUM";
1899 return "NMI_INTERRUPT";
1903 return "FATAL_ERROR";
1909 #define ERROR_START_OFFSET (1 * sizeof(u32))
1910 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1912 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1915 u32 desc, time, count, base, data1;
1916 u32 blink1, blink2, ilink1, ilink2;
1919 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1921 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1922 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1926 rc = iwl_grab_nic_access(priv);
1928 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1932 count = iwl_read_targ_mem(priv, base);
1934 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1935 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1936 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1937 priv->status, count);
1940 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1941 "ilink1 nmiPC Line\n");
1942 for (i = ERROR_START_OFFSET;
1943 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1944 i += ERROR_ELEM_SIZE) {
1945 desc = iwl_read_targ_mem(priv, base + i);
1947 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1949 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1951 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1953 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1955 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1957 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1960 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1961 desc_lookup(desc), desc, time, blink1, blink2,
1962 ilink1, ilink2, data1);
1965 iwl_release_nic_access(priv);
1969 #define EVENT_START_OFFSET (6 * sizeof(u32))
1972 * iwl3945_print_event_log - Dump error event log to syslog
1974 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1976 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1977 u32 num_events, u32 mode)
1980 u32 base; /* SRAM byte address of event log header */
1981 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1982 u32 ptr; /* SRAM byte address of log data */
1983 u32 ev, time, data; /* event log data */
1985 if (num_events == 0)
1988 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1991 event_size = 2 * sizeof(u32);
1993 event_size = 3 * sizeof(u32);
1995 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1997 /* "time" is actually "data" for mode 0 (no timestamp).
1998 * place event id # at far right for easier visual parsing. */
1999 for (i = 0; i < num_events; i++) {
2000 ev = iwl_read_targ_mem(priv, ptr);
2002 time = iwl_read_targ_mem(priv, ptr);
2006 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2008 data = iwl_read_targ_mem(priv, ptr);
2010 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2015 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2018 u32 base; /* SRAM byte address of event log header */
2019 u32 capacity; /* event log capacity in # entries */
2020 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2021 u32 num_wraps; /* # times uCode wrapped to top of log */
2022 u32 next_entry; /* index of next entry to be written by uCode */
2023 u32 size; /* # entries that we'll print */
2025 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2026 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2027 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2031 rc = iwl_grab_nic_access(priv);
2033 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2037 /* event log header */
2038 capacity = iwl_read_targ_mem(priv, base);
2039 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2040 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2041 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2043 size = num_wraps ? capacity : next_entry;
2045 /* bail out if nothing in log */
2047 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2048 iwl_release_nic_access(priv);
2052 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
2055 /* if uCode has wrapped back to top of log, start at the oldest entry,
2056 * i.e the next one that uCode would fill. */
2058 iwl3945_print_event_log(priv, next_entry,
2059 capacity - next_entry, mode);
2061 /* (then/else) start at top of log */
2062 iwl3945_print_event_log(priv, 0, next_entry, mode);
2064 iwl_release_nic_access(priv);
2067 static void iwl3945_error_recovery(struct iwl_priv *priv)
2069 unsigned long flags;
2071 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2072 sizeof(priv->staging_rxon));
2073 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2074 iwl3945_commit_rxon(priv);
2076 iwl3945_add_station(priv, priv->bssid, 1, 0);
2078 spin_lock_irqsave(&priv->lock, flags);
2079 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2080 priv->error_recovering = 0;
2081 spin_unlock_irqrestore(&priv->lock, flags);
2084 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
2086 u32 inta, handled = 0;
2088 unsigned long flags;
2089 #ifdef CONFIG_IWLWIFI_DEBUG
2093 spin_lock_irqsave(&priv->lock, flags);
2095 /* Ack/clear/reset pending uCode interrupts.
2096 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2097 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2098 inta = iwl_read32(priv, CSR_INT);
2099 iwl_write32(priv, CSR_INT, inta);
2101 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2102 * Any new interrupts that happen after this, either while we're
2103 * in this tasklet, or later, will show up in next ISR/tasklet. */
2104 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2105 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2107 #ifdef CONFIG_IWLWIFI_DEBUG
2108 if (priv->debug_level & IWL_DL_ISR) {
2109 /* just for debug */
2110 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2111 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2112 inta, inta_mask, inta_fh);
2116 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2117 * atomic, make sure that inta covers all the interrupts that
2118 * we've discovered, even if FH interrupt came in just after
2119 * reading CSR_INT. */
2120 if (inta_fh & CSR39_FH_INT_RX_MASK)
2121 inta |= CSR_INT_BIT_FH_RX;
2122 if (inta_fh & CSR39_FH_INT_TX_MASK)
2123 inta |= CSR_INT_BIT_FH_TX;
2125 /* Now service all interrupt bits discovered above. */
2126 if (inta & CSR_INT_BIT_HW_ERR) {
2127 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
2129 /* Tell the device to stop sending interrupts */
2130 iwl_disable_interrupts(priv);
2132 iwl_irq_handle_error(priv);
2134 handled |= CSR_INT_BIT_HW_ERR;
2136 spin_unlock_irqrestore(&priv->lock, flags);
2141 #ifdef CONFIG_IWLWIFI_DEBUG
2142 if (priv->debug_level & (IWL_DL_ISR)) {
2143 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2144 if (inta & CSR_INT_BIT_SCD)
2145 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
2146 "the frame/frames.\n");
2148 /* Alive notification via Rx interrupt will do the real work */
2149 if (inta & CSR_INT_BIT_ALIVE)
2150 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
2153 /* Safely ignore these bits for debug checks below */
2154 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2156 /* Error detected by uCode */
2157 if (inta & CSR_INT_BIT_SW_ERR) {
2158 IWL_ERR(priv, "Microcode SW error detected. "
2159 "Restarting 0x%X.\n", inta);
2160 iwl_irq_handle_error(priv);
2161 handled |= CSR_INT_BIT_SW_ERR;
2164 /* uCode wakes up after power-down sleep */
2165 if (inta & CSR_INT_BIT_WAKEUP) {
2166 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
2167 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2168 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2169 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2170 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2171 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2172 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2173 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2175 handled |= CSR_INT_BIT_WAKEUP;
2178 /* All uCode command responses, including Tx command responses,
2179 * Rx "responses" (frame-received notification), and other
2180 * notifications from uCode come through here*/
2181 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2182 iwl3945_rx_handle(priv);
2183 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2186 if (inta & CSR_INT_BIT_FH_TX) {
2187 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
2189 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
2190 if (!iwl_grab_nic_access(priv)) {
2191 iwl_write_direct32(priv, FH39_TCSR_CREDIT
2192 (FH39_SRVC_CHNL), 0x0);
2193 iwl_release_nic_access(priv);
2195 handled |= CSR_INT_BIT_FH_TX;
2198 if (inta & ~handled)
2199 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
2201 if (inta & ~CSR_INI_SET_MASK) {
2202 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
2203 inta & ~CSR_INI_SET_MASK);
2204 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
2207 /* Re-enable all interrupts */
2208 /* only Re-enable if disabled by irq */
2209 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2210 iwl_enable_interrupts(priv);
2212 #ifdef CONFIG_IWLWIFI_DEBUG
2213 if (priv->debug_level & (IWL_DL_ISR)) {
2214 inta = iwl_read32(priv, CSR_INT);
2215 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2216 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2217 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2218 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2221 spin_unlock_irqrestore(&priv->lock, flags);
2224 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2225 enum ieee80211_band band,
2226 u8 is_active, u8 n_probes,
2227 struct iwl3945_scan_channel *scan_ch)
2229 const struct ieee80211_channel *channels = NULL;
2230 const struct ieee80211_supported_band *sband;
2231 const struct iwl_channel_info *ch_info;
2232 u16 passive_dwell = 0;
2233 u16 active_dwell = 0;
2236 sband = iwl_get_hw_mode(priv, band);
2240 channels = sband->channels;
2242 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2243 passive_dwell = iwl_get_passive_dwell_time(priv, band);
2245 if (passive_dwell <= active_dwell)
2246 passive_dwell = active_dwell + 1;
2248 for (i = 0, added = 0; i < sband->n_channels; i++) {
2249 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2252 scan_ch->channel = channels[i].hw_value;
2254 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2255 if (!is_channel_valid(ch_info)) {
2256 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2261 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2262 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2263 /* If passive , set up for auto-switch
2264 * and use long active_dwell time.
2266 if (!is_active || is_channel_passive(ch_info) ||
2267 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2268 scan_ch->type = 0; /* passive */
2269 if (IWL_UCODE_API(priv->ucode_ver) == 1)
2270 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2272 scan_ch->type = 1; /* active */
2275 /* Set direct probe bits. These may be used both for active
2276 * scan channels (probes gets sent right away),
2277 * or for passive channels (probes get se sent only after
2278 * hearing clear Rx packet).*/
2279 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2281 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2283 /* uCode v1 does not allow setting direct probe bits on
2284 * passive channel. */
2285 if ((scan_ch->type & 1) && n_probes)
2286 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2289 /* Set txpower levels to defaults */
2290 scan_ch->tpc.dsp_atten = 110;
2291 /* scan_pwr_info->tpc.dsp_atten; */
2293 /*scan_pwr_info->tpc.tx_gain; */
2294 if (band == IEEE80211_BAND_5GHZ)
2295 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2297 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2298 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2300 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2304 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2306 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2307 (scan_ch->type & 1) ?
2308 active_dwell : passive_dwell);
2314 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2318 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2319 struct ieee80211_rate *rates)
2323 for (i = 0; i < IWL_RATE_COUNT; i++) {
2324 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2325 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2326 rates[i].hw_value_short = i;
2328 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2330 * If CCK != 1M then set short preamble rate flag.
2332 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2333 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2338 /******************************************************************************
2340 * uCode download functions
2342 ******************************************************************************/
2344 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2346 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2347 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2348 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2349 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2350 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2351 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2355 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2356 * looking at all data.
2358 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2365 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2367 rc = iwl_grab_nic_access(priv);
2371 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2372 IWL39_RTC_INST_LOWER_BOUND);
2375 for (; len > 0; len -= sizeof(u32), image++) {
2376 /* read data comes through single port, auto-incr addr */
2377 /* NOTE: Use the debugless read so we don't flood kernel log
2378 * if IWL_DL_IO is set */
2379 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2380 if (val != le32_to_cpu(*image)) {
2381 IWL_ERR(priv, "uCode INST section is invalid at "
2382 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2383 save_len - len, val, le32_to_cpu(*image));
2391 iwl_release_nic_access(priv);
2394 IWL_DEBUG_INFO(priv,
2395 "ucode image in INSTRUCTION memory is good\n");
2402 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2403 * using sample data 100 bytes apart. If these sample points are good,
2404 * it's a pretty good bet that everything between them is good, too.
2406 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2413 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2415 rc = iwl_grab_nic_access(priv);
2419 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2420 /* read data comes through single port, auto-incr addr */
2421 /* NOTE: Use the debugless read so we don't flood kernel log
2422 * if IWL_DL_IO is set */
2423 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2424 i + IWL39_RTC_INST_LOWER_BOUND);
2425 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2426 if (val != le32_to_cpu(*image)) {
2427 #if 0 /* Enable this if you want to see details */
2428 IWL_ERR(priv, "uCode INST section is invalid at "
2429 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2439 iwl_release_nic_access(priv);
2446 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2447 * and verify its contents
2449 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2456 image = (__le32 *)priv->ucode_boot.v_addr;
2457 len = priv->ucode_boot.len;
2458 rc = iwl3945_verify_inst_sparse(priv, image, len);
2460 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2464 /* Try initialize */
2465 image = (__le32 *)priv->ucode_init.v_addr;
2466 len = priv->ucode_init.len;
2467 rc = iwl3945_verify_inst_sparse(priv, image, len);
2469 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2473 /* Try runtime/protocol */
2474 image = (__le32 *)priv->ucode_code.v_addr;
2475 len = priv->ucode_code.len;
2476 rc = iwl3945_verify_inst_sparse(priv, image, len);
2478 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2482 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2484 /* Since nothing seems to match, show first several data entries in
2485 * instruction SRAM, so maybe visual inspection will give a clue.
2486 * Selection of bootstrap image (vs. other images) is arbitrary. */
2487 image = (__le32 *)priv->ucode_boot.v_addr;
2488 len = priv->ucode_boot.len;
2489 rc = iwl3945_verify_inst_full(priv, image, len);
2494 static void iwl3945_nic_start(struct iwl_priv *priv)
2496 /* Remove all resets to allow NIC to operate */
2497 iwl_write32(priv, CSR_RESET, 0);
2501 * iwl3945_read_ucode - Read uCode images from disk file.
2503 * Copy into buffers for card to fetch via bus-mastering
2505 static int iwl3945_read_ucode(struct iwl_priv *priv)
2507 struct iwl_ucode *ucode;
2508 int ret = -EINVAL, index;
2509 const struct firmware *ucode_raw;
2510 /* firmware file name contains uCode/driver compatibility version */
2511 const char *name_pre = priv->cfg->fw_name_pre;
2512 const unsigned int api_max = priv->cfg->ucode_api_max;
2513 const unsigned int api_min = priv->cfg->ucode_api_min;
2517 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2519 /* Ask kernel firmware_class module to get the boot firmware off disk.
2520 * request_firmware() is synchronous, file is in memory on return. */
2521 for (index = api_max; index >= api_min; index--) {
2522 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2523 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2525 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2532 if (index < api_max)
2533 IWL_ERR(priv, "Loaded firmware %s, "
2534 "which is deprecated. "
2535 " Please use API v%u instead.\n",
2537 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2538 "(%zd bytes) from disk\n",
2539 buf, ucode_raw->size);
2547 /* Make sure that we got at least our header! */
2548 if (ucode_raw->size < sizeof(*ucode)) {
2549 IWL_ERR(priv, "File size way too small!\n");
2554 /* Data from ucode file: header followed by uCode images */
2555 ucode = (void *)ucode_raw->data;
2557 priv->ucode_ver = le32_to_cpu(ucode->ver);
2558 api_ver = IWL_UCODE_API(priv->ucode_ver);
2559 inst_size = le32_to_cpu(ucode->inst_size);
2560 data_size = le32_to_cpu(ucode->data_size);
2561 init_size = le32_to_cpu(ucode->init_size);
2562 init_data_size = le32_to_cpu(ucode->init_data_size);
2563 boot_size = le32_to_cpu(ucode->boot_size);
2565 /* api_ver should match the api version forming part of the
2566 * firmware filename ... but we don't check for that and only rely
2567 * on the API version read from firmware header from here on forward */
2569 if (api_ver < api_min || api_ver > api_max) {
2570 IWL_ERR(priv, "Driver unable to support your firmware API. "
2571 "Driver supports v%u, firmware is v%u.\n",
2573 priv->ucode_ver = 0;
2577 if (api_ver != api_max)
2578 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2579 "got %u. New firmware can be obtained "
2580 "from http://www.intellinuxwireless.org.\n",
2583 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2584 IWL_UCODE_MAJOR(priv->ucode_ver),
2585 IWL_UCODE_MINOR(priv->ucode_ver),
2586 IWL_UCODE_API(priv->ucode_ver),
2587 IWL_UCODE_SERIAL(priv->ucode_ver));
2589 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2591 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2593 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2595 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2597 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2599 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2603 /* Verify size of file vs. image size info in file's header */
2604 if (ucode_raw->size < sizeof(*ucode) +
2605 inst_size + data_size + init_size +
2606 init_data_size + boot_size) {
2608 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2614 /* Verify that uCode images will fit in card's SRAM */
2615 if (inst_size > IWL39_MAX_INST_SIZE) {
2616 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2622 if (data_size > IWL39_MAX_DATA_SIZE) {
2623 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2628 if (init_size > IWL39_MAX_INST_SIZE) {
2629 IWL_DEBUG_INFO(priv,
2630 "uCode init instr len %d too large to fit in\n",
2635 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2636 IWL_DEBUG_INFO(priv,
2637 "uCode init data len %d too large to fit in\n",
2642 if (boot_size > IWL39_MAX_BSM_SIZE) {
2643 IWL_DEBUG_INFO(priv,
2644 "uCode boot instr len %d too large to fit in\n",
2650 /* Allocate ucode buffers for card's bus-master loading ... */
2652 /* Runtime instructions and 2 copies of data:
2653 * 1) unmodified from disk
2654 * 2) backup cache for save/restore during power-downs */
2655 priv->ucode_code.len = inst_size;
2656 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2658 priv->ucode_data.len = data_size;
2659 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2661 priv->ucode_data_backup.len = data_size;
2662 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2664 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2665 !priv->ucode_data_backup.v_addr)
2668 /* Initialization instructions and data */
2669 if (init_size && init_data_size) {
2670 priv->ucode_init.len = init_size;
2671 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2673 priv->ucode_init_data.len = init_data_size;
2674 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2676 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2680 /* Bootstrap (instructions only, no data) */
2682 priv->ucode_boot.len = boot_size;
2683 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2685 if (!priv->ucode_boot.v_addr)
2689 /* Copy images into buffers for card's bus-master reads ... */
2691 /* Runtime instructions (first block of data in file) */
2692 src = &ucode->data[0];
2693 len = priv->ucode_code.len;
2694 IWL_DEBUG_INFO(priv,
2695 "Copying (but not loading) uCode instr len %zd\n", len);
2696 memcpy(priv->ucode_code.v_addr, src, len);
2697 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2698 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2700 /* Runtime data (2nd block)
2701 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2702 src = &ucode->data[inst_size];
2703 len = priv->ucode_data.len;
2704 IWL_DEBUG_INFO(priv,
2705 "Copying (but not loading) uCode data len %zd\n", len);
2706 memcpy(priv->ucode_data.v_addr, src, len);
2707 memcpy(priv->ucode_data_backup.v_addr, src, len);
2709 /* Initialization instructions (3rd block) */
2711 src = &ucode->data[inst_size + data_size];
2712 len = priv->ucode_init.len;
2713 IWL_DEBUG_INFO(priv,
2714 "Copying (but not loading) init instr len %zd\n", len);
2715 memcpy(priv->ucode_init.v_addr, src, len);
2718 /* Initialization data (4th block) */
2719 if (init_data_size) {
2720 src = &ucode->data[inst_size + data_size + init_size];
2721 len = priv->ucode_init_data.len;
2722 IWL_DEBUG_INFO(priv,
2723 "Copying (but not loading) init data len %zd\n", len);
2724 memcpy(priv->ucode_init_data.v_addr, src, len);
2727 /* Bootstrap instructions (5th block) */
2728 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2729 len = priv->ucode_boot.len;
2730 IWL_DEBUG_INFO(priv,
2731 "Copying (but not loading) boot instr len %zd\n", len);
2732 memcpy(priv->ucode_boot.v_addr, src, len);
2734 /* We have our copies now, allow OS release its copies */
2735 release_firmware(ucode_raw);
2739 IWL_ERR(priv, "failed to allocate pci memory\n");
2741 iwl3945_dealloc_ucode_pci(priv);
2744 release_firmware(ucode_raw);
2752 * iwl3945_set_ucode_ptrs - Set uCode address location
2754 * Tell initialization uCode where to find runtime uCode.
2756 * BSM registers initially contain pointers to initialization uCode.
2757 * We need to replace them to load runtime uCode inst and data,
2758 * and to save runtime data when powering down.
2760 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2765 unsigned long flags;
2767 /* bits 31:0 for 3945 */
2768 pinst = priv->ucode_code.p_addr;
2769 pdata = priv->ucode_data_backup.p_addr;
2771 spin_lock_irqsave(&priv->lock, flags);
2772 rc = iwl_grab_nic_access(priv);
2774 spin_unlock_irqrestore(&priv->lock, flags);
2778 /* Tell bootstrap uCode where to find image to load */
2779 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2780 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2781 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2782 priv->ucode_data.len);
2784 /* Inst byte count must be last to set up, bit 31 signals uCode
2785 * that all new ptr/size info is in place */
2786 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2787 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2789 iwl_release_nic_access(priv);
2791 spin_unlock_irqrestore(&priv->lock, flags);
2793 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2799 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2801 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2803 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2805 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2807 /* Check alive response for "valid" sign from uCode */
2808 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2809 /* We had an error bringing up the hardware, so take it
2810 * all the way back down so we can try again */
2811 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2815 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2816 * This is a paranoid check, because we would not have gotten the
2817 * "initialize" alive if code weren't properly loaded. */
2818 if (iwl3945_verify_ucode(priv)) {
2819 /* Runtime instruction load was bad;
2820 * take it all the way back down so we can try again */
2821 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2825 /* Send pointers to protocol/runtime uCode image ... init code will
2826 * load and launch runtime uCode, which will send us another "Alive"
2828 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2829 if (iwl3945_set_ucode_ptrs(priv)) {
2830 /* Runtime instruction load won't happen;
2831 * take it all the way back down so we can try again */
2832 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2838 queue_work(priv->workqueue, &priv->restart);
2843 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
2844 struct sk_buff *skb);
2847 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2848 * from protocol/runtime uCode (initialization uCode's
2849 * Alive gets handled by iwl3945_init_alive_start()).
2851 static void iwl3945_alive_start(struct iwl_priv *priv)
2854 int thermal_spin = 0;
2857 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2859 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2860 /* We had an error bringing up the hardware, so take it
2861 * all the way back down so we can try again */
2862 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2866 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2867 * This is a paranoid check, because we would not have gotten the
2868 * "runtime" alive if code weren't properly loaded. */
2869 if (iwl3945_verify_ucode(priv)) {
2870 /* Runtime instruction load was bad;
2871 * take it all the way back down so we can try again */
2872 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2876 iwl3945_clear_stations_table(priv);
2878 rc = iwl_grab_nic_access(priv);
2880 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2884 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2885 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2886 iwl_release_nic_access(priv);
2889 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2890 /* if RFKILL is not on, then wait for thermal
2891 * sensor in adapter to kick in */
2892 while (iwl3945_hw_get_temperature(priv) == 0) {
2898 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2901 set_bit(STATUS_RF_KILL_HW, &priv->status);
2903 /* After the ALIVE response, we can send commands to 3945 uCode */
2904 set_bit(STATUS_ALIVE, &priv->status);
2906 /* Clear out the uCode error bit if it is set */
2907 clear_bit(STATUS_FW_ERROR, &priv->status);
2909 if (iwl_is_rfkill(priv))
2912 ieee80211_wake_queues(priv->hw);
2914 priv->active_rate = priv->rates_mask;
2915 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2917 iwl_power_update_mode(priv, false);
2919 if (iwl_is_associated(priv)) {
2920 struct iwl3945_rxon_cmd *active_rxon =
2921 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2923 memcpy(&priv->staging_rxon, &priv->active_rxon,
2924 sizeof(priv->staging_rxon));
2925 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2927 /* Initialize our rx_config data */
2928 iwl_connection_init_rx_config(priv, priv->iw_mode);
2931 /* Configure Bluetooth device coexistence support */
2932 iwl_send_bt_config(priv);
2934 /* Configure the adapter for unassociated operation */
2935 iwl3945_commit_rxon(priv);
2937 iwl3945_reg_txpower_periodic(priv);
2939 iwl3945_led_register(priv);
2941 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2942 set_bit(STATUS_READY, &priv->status);
2943 wake_up_interruptible(&priv->wait_command_queue);
2945 if (priv->error_recovering)
2946 iwl3945_error_recovery(priv);
2948 /* reassociate for ADHOC mode */
2949 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2950 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2953 iwl3945_mac_beacon_update(priv->hw, beacon);
2959 queue_work(priv->workqueue, &priv->restart);
2962 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2964 static void __iwl3945_down(struct iwl_priv *priv)
2966 unsigned long flags;
2967 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2968 struct ieee80211_conf *conf = NULL;
2970 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2972 conf = ieee80211_get_hw_conf(priv->hw);
2975 set_bit(STATUS_EXIT_PENDING, &priv->status);
2977 iwl3945_led_unregister(priv);
2978 iwl3945_clear_stations_table(priv);
2980 /* Unblock any waiting calls */
2981 wake_up_interruptible_all(&priv->wait_command_queue);
2983 /* Wipe out the EXIT_PENDING status bit if we are not actually
2984 * exiting the module */
2986 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2988 /* stop and reset the on-board processor */
2989 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2991 /* tell the device to stop sending interrupts */
2992 spin_lock_irqsave(&priv->lock, flags);
2993 iwl_disable_interrupts(priv);
2994 spin_unlock_irqrestore(&priv->lock, flags);
2995 iwl_synchronize_irq(priv);
2997 if (priv->mac80211_registered)
2998 ieee80211_stop_queues(priv->hw);
3000 /* If we have not previously called iwl3945_init() then
3001 * clear all bits but the RF Kill and SUSPEND bits and return */
3002 if (!iwl_is_init(priv)) {
3003 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3005 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3007 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3008 STATUS_GEO_CONFIGURED |
3009 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3011 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3012 STATUS_EXIT_PENDING;
3016 /* ...otherwise clear out all the status bits but the RF Kill and
3017 * SUSPEND bits and continue taking the NIC down. */
3018 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3020 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3022 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3023 STATUS_GEO_CONFIGURED |
3024 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3026 test_bit(STATUS_FW_ERROR, &priv->status) <<
3028 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3029 STATUS_EXIT_PENDING;
3031 priv->cfg->ops->lib->apm_ops.reset(priv);
3032 spin_lock_irqsave(&priv->lock, flags);
3033 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3034 spin_unlock_irqrestore(&priv->lock, flags);
3036 iwl3945_hw_txq_ctx_stop(priv);
3037 iwl3945_hw_rxq_stop(priv);
3039 spin_lock_irqsave(&priv->lock, flags);
3040 if (!iwl_grab_nic_access(priv)) {
3041 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3042 APMG_CLK_VAL_DMA_CLK_RQT);
3043 iwl_release_nic_access(priv);
3045 spin_unlock_irqrestore(&priv->lock, flags);
3049 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
3050 priv->cfg->ops->lib->apm_ops.stop(priv);
3052 priv->cfg->ops->lib->apm_ops.reset(priv);
3055 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3057 if (priv->ibss_beacon)
3058 dev_kfree_skb(priv->ibss_beacon);
3059 priv->ibss_beacon = NULL;
3061 /* clear out any free frames */
3062 iwl3945_clear_free_frames(priv);
3065 static void iwl3945_down(struct iwl_priv *priv)
3067 mutex_lock(&priv->mutex);
3068 __iwl3945_down(priv);
3069 mutex_unlock(&priv->mutex);
3071 iwl3945_cancel_deferred_work(priv);
3074 #define MAX_HW_RESTARTS 5
3076 static int __iwl3945_up(struct iwl_priv *priv)
3080 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3081 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3085 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3086 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
3091 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3092 IWL_ERR(priv, "ucode not available for device bring up\n");
3096 /* If platform's RF_KILL switch is NOT set to KILL */
3097 if (iwl_read32(priv, CSR_GP_CNTRL) &
3098 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3099 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3101 set_bit(STATUS_RF_KILL_HW, &priv->status);
3102 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3103 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3108 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3110 rc = iwl3945_hw_nic_init(priv);
3112 IWL_ERR(priv, "Unable to int nic\n");
3116 /* make sure rfkill handshake bits are cleared */
3117 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3118 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3119 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3121 /* clear (again), then enable host interrupts */
3122 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3123 iwl_enable_interrupts(priv);
3125 /* really make sure rfkill handshake bits are cleared */
3126 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3127 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3129 /* Copy original ucode data image from disk into backup cache.
3130 * This will be used to initialize the on-board processor's
3131 * data SRAM for a clean start when the runtime program first loads. */
3132 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3133 priv->ucode_data.len);
3135 /* We return success when we resume from suspend and rf_kill is on. */
3136 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3139 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3141 iwl3945_clear_stations_table(priv);
3143 /* load bootstrap state machine,
3144 * load bootstrap program into processor's memory,
3145 * prepare to load the "initialize" uCode */
3146 priv->cfg->ops->lib->load_ucode(priv);
3150 "Unable to set up bootstrap uCode: %d\n", rc);
3154 /* start card; "initialize" will load runtime ucode */
3155 iwl3945_nic_start(priv);
3157 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3162 set_bit(STATUS_EXIT_PENDING, &priv->status);
3163 __iwl3945_down(priv);
3164 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3166 /* tried to restart and config the device for as long as our
3167 * patience could withstand */
3168 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3173 /*****************************************************************************
3175 * Workqueue callbacks
3177 *****************************************************************************/
3179 static void iwl3945_bg_init_alive_start(struct work_struct *data)
3181 struct iwl_priv *priv =
3182 container_of(data, struct iwl_priv, init_alive_start.work);
3184 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3187 mutex_lock(&priv->mutex);
3188 iwl3945_init_alive_start(priv);
3189 mutex_unlock(&priv->mutex);
3192 static void iwl3945_bg_alive_start(struct work_struct *data)
3194 struct iwl_priv *priv =
3195 container_of(data, struct iwl_priv, alive_start.work);
3197 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3200 mutex_lock(&priv->mutex);
3201 iwl3945_alive_start(priv);
3202 mutex_unlock(&priv->mutex);
3205 static void iwl3945_rfkill_poll(struct work_struct *data)
3207 struct iwl_priv *priv =
3208 container_of(data, struct iwl_priv, rfkill_poll.work);
3209 unsigned long status = priv->status;
3211 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3212 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3214 set_bit(STATUS_RF_KILL_HW, &priv->status);
3216 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
3217 queue_work(priv->workqueue, &priv->rf_kill);
3219 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3220 round_jiffies_relative(2 * HZ));
3224 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3225 static void iwl3945_bg_request_scan(struct work_struct *data)
3227 struct iwl_priv *priv =
3228 container_of(data, struct iwl_priv, request_scan);
3229 struct iwl_host_cmd cmd = {
3230 .id = REPLY_SCAN_CMD,
3231 .len = sizeof(struct iwl3945_scan_cmd),
3232 .meta.flags = CMD_SIZE_HUGE,
3235 struct iwl3945_scan_cmd *scan;
3236 struct ieee80211_conf *conf = NULL;
3238 enum ieee80211_band band;
3239 DECLARE_SSID_BUF(ssid);
3241 conf = ieee80211_get_hw_conf(priv->hw);
3243 mutex_lock(&priv->mutex);
3245 if (!iwl_is_ready(priv)) {
3246 IWL_WARN(priv, "request scan called when driver not ready.\n");
3250 /* Make sure the scan wasn't canceled before this queued work
3251 * was given the chance to run... */
3252 if (!test_bit(STATUS_SCANNING, &priv->status))
3255 /* This should never be called or scheduled if there is currently
3256 * a scan active in the hardware. */
3257 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3258 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
3259 "Ignoring second request.\n");
3264 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3265 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3269 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3271 "Scan request while abort pending. Queuing.\n");
3275 if (iwl_is_rfkill(priv)) {
3276 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3280 if (!test_bit(STATUS_READY, &priv->status)) {
3282 "Scan request while uninitialized. Queuing.\n");
3286 if (!priv->scan_bands) {
3287 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3292 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3293 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3300 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3302 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3303 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3305 if (iwl_is_associated(priv)) {
3308 u32 suspend_time = 100;
3309 u32 scan_suspend_time = 100;
3310 unsigned long flags;
3312 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3314 spin_lock_irqsave(&priv->lock, flags);
3315 interval = priv->beacon_int;
3316 spin_unlock_irqrestore(&priv->lock, flags);
3318 scan->suspend_time = 0;
3319 scan->max_out_time = cpu_to_le32(200 * 1024);
3321 interval = suspend_time;
3323 * suspend time format:
3324 * 0-19: beacon interval in usec (time before exec.)
3326 * 24-31: number of beacons (suspend between channels)
3329 extra = (suspend_time / interval) << 24;
3330 scan_suspend_time = 0xFF0FFFFF &
3331 (extra | ((suspend_time % interval) * 1024));
3333 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3334 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3335 scan_suspend_time, interval);
3338 /* We should add the ability for user to lock to PASSIVE ONLY */
3339 if (priv->one_direct_scan) {
3340 IWL_DEBUG_SCAN(priv, "Kicking off one direct scan for '%s'\n",
3341 print_ssid(ssid, priv->direct_ssid,
3342 priv->direct_ssid_len));
3343 scan->direct_scan[0].id = WLAN_EID_SSID;
3344 scan->direct_scan[0].len = priv->direct_ssid_len;
3345 memcpy(scan->direct_scan[0].ssid,
3346 priv->direct_ssid, priv->direct_ssid_len);
3349 IWL_DEBUG_SCAN(priv, "Kicking off one indirect scan.\n");
3351 /* We don't build a direct scan probe request; the uCode will do
3352 * that based on the direct_mask added to each channel entry */
3353 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3354 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3355 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3357 /* flags + rate selection */
3359 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3360 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3361 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3362 scan->good_CRC_th = 0;
3363 band = IEEE80211_BAND_2GHZ;
3364 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3365 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3366 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3367 band = IEEE80211_BAND_5GHZ;
3369 IWL_WARN(priv, "Invalid scan band count\n");
3373 scan->tx_cmd.len = cpu_to_le16(
3374 iwl_fill_probe_req(priv, band,
3375 (struct ieee80211_mgmt *)scan->data,
3376 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3378 /* select Rx antennas */
3379 scan->flags |= iwl3945_get_antenna_flags(priv);
3381 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3382 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3384 scan->channel_count =
3385 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3387 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3389 if (scan->channel_count == 0) {
3390 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3394 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3395 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3397 scan->len = cpu_to_le16(cmd.len);
3399 set_bit(STATUS_SCAN_HW, &priv->status);
3400 rc = iwl_send_cmd_sync(priv, &cmd);
3404 queue_delayed_work(priv->workqueue, &priv->scan_check,
3405 IWL_SCAN_CHECK_WATCHDOG);
3407 mutex_unlock(&priv->mutex);
3411 /* can not perform scan make sure we clear scanning
3412 * bits from status so next scan request can be performed.
3413 * if we dont clear scanning status bit here all next scan
3416 clear_bit(STATUS_SCAN_HW, &priv->status);
3417 clear_bit(STATUS_SCANNING, &priv->status);
3419 /* inform mac80211 scan aborted */
3420 queue_work(priv->workqueue, &priv->scan_completed);
3421 mutex_unlock(&priv->mutex);
3424 static void iwl3945_bg_up(struct work_struct *data)
3426 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3428 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3431 mutex_lock(&priv->mutex);
3433 mutex_unlock(&priv->mutex);
3434 iwl_rfkill_set_hw_state(priv);
3437 static void iwl3945_bg_restart(struct work_struct *data)
3439 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3441 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3445 queue_work(priv->workqueue, &priv->up);
3448 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3450 struct iwl_priv *priv =
3451 container_of(data, struct iwl_priv, rx_replenish);
3453 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3456 mutex_lock(&priv->mutex);
3457 iwl3945_rx_replenish(priv);
3458 mutex_unlock(&priv->mutex);
3461 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3463 static void iwl3945_post_associate(struct iwl_priv *priv)
3466 struct ieee80211_conf *conf = NULL;
3468 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3469 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3474 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3475 priv->assoc_id, priv->active_rxon.bssid_addr);
3477 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3480 if (!priv->vif || !priv->is_open)
3483 iwl_scan_cancel_timeout(priv, 200);
3485 conf = ieee80211_get_hw_conf(priv->hw);
3487 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3488 iwl3945_commit_rxon(priv);
3490 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3491 iwl3945_setup_rxon_timing(priv);
3492 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3493 sizeof(priv->rxon_timing), &priv->rxon_timing);
3495 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3496 "Attempting to continue.\n");
3498 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3500 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3502 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3503 priv->assoc_id, priv->beacon_int);
3505 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3506 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3508 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3510 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3511 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3512 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3514 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3516 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3517 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3521 iwl3945_commit_rxon(priv);
3523 switch (priv->iw_mode) {
3524 case NL80211_IFTYPE_STATION:
3525 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3528 case NL80211_IFTYPE_ADHOC:
3531 iwl3945_add_station(priv, priv->bssid, 0, 0);
3532 iwl3945_sync_sta(priv, IWL_STA_ID,
3533 (priv->band == IEEE80211_BAND_5GHZ) ?
3534 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3536 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3537 iwl3945_send_beacon_cmd(priv);
3542 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3543 __func__, priv->iw_mode);
3547 iwl_activate_qos(priv, 0);
3549 /* we have just associated, don't start scan too early */
3550 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3553 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
3555 /*****************************************************************************
3557 * mac80211 entry point functions
3559 *****************************************************************************/
3561 #define UCODE_READY_TIMEOUT (2 * HZ)
3563 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3565 struct iwl_priv *priv = hw->priv;
3568 IWL_DEBUG_MAC80211(priv, "enter\n");
3570 /* we should be verifying the device is ready to be opened */
3571 mutex_lock(&priv->mutex);
3573 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3574 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3575 * ucode filename and max sizes are card-specific. */
3577 if (!priv->ucode_code.len) {
3578 ret = iwl3945_read_ucode(priv);
3580 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3581 mutex_unlock(&priv->mutex);
3582 goto out_release_irq;
3586 ret = __iwl3945_up(priv);
3588 mutex_unlock(&priv->mutex);
3590 iwl_rfkill_set_hw_state(priv);
3593 goto out_release_irq;
3595 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3597 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3600 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3601 * mac80211 will not be run successfully. */
3602 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3603 test_bit(STATUS_READY, &priv->status),
3604 UCODE_READY_TIMEOUT);
3606 if (!test_bit(STATUS_READY, &priv->status)) {
3608 "Wait for START_ALIVE timeout after %dms.\n",
3609 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3611 goto out_release_irq;
3615 /* ucode is running and will send rfkill notifications,
3616 * no need to poll the killswitch state anymore */
3617 cancel_delayed_work(&priv->rfkill_poll);
3620 IWL_DEBUG_MAC80211(priv, "leave\n");
3625 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3629 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3631 struct iwl_priv *priv = hw->priv;
3633 IWL_DEBUG_MAC80211(priv, "enter\n");
3635 if (!priv->is_open) {
3636 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3642 if (iwl_is_ready_rf(priv)) {
3643 /* stop mac, cancel any scan request and clear
3644 * RXON_FILTER_ASSOC_MSK BIT
3646 mutex_lock(&priv->mutex);
3647 iwl_scan_cancel_timeout(priv, 100);
3648 mutex_unlock(&priv->mutex);
3653 flush_workqueue(priv->workqueue);
3655 /* start polling the killswitch state again */
3656 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3657 round_jiffies_relative(2 * HZ));
3659 IWL_DEBUG_MAC80211(priv, "leave\n");
3662 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3664 struct iwl_priv *priv = hw->priv;
3666 IWL_DEBUG_MAC80211(priv, "enter\n");
3668 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3669 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3671 if (iwl3945_tx_skb(priv, skb))
3672 dev_kfree_skb_any(skb);
3674 IWL_DEBUG_MAC80211(priv, "leave\n");
3675 return NETDEV_TX_OK;
3678 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
3679 struct ieee80211_if_init_conf *conf)
3681 struct iwl_priv *priv = hw->priv;
3682 unsigned long flags;
3684 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
3687 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
3691 spin_lock_irqsave(&priv->lock, flags);
3692 priv->vif = conf->vif;
3693 priv->iw_mode = conf->type;
3695 spin_unlock_irqrestore(&priv->lock, flags);
3697 mutex_lock(&priv->mutex);
3699 if (conf->mac_addr) {
3700 IWL_DEBUG_MAC80211(priv, "Set: %pM\n", conf->mac_addr);
3701 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3704 if (iwl_is_ready(priv))
3705 iwl3945_set_mode(priv, conf->type);
3707 mutex_unlock(&priv->mutex);
3709 IWL_DEBUG_MAC80211(priv, "leave\n");
3714 * iwl3945_mac_config - mac80211 config callback
3716 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3717 * be set inappropriately and the driver currently sets the hardware up to
3718 * use it whenever needed.
3720 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
3722 struct iwl_priv *priv = hw->priv;
3723 const struct iwl_channel_info *ch_info;
3724 struct ieee80211_conf *conf = &hw->conf;
3725 unsigned long flags;
3728 mutex_lock(&priv->mutex);
3729 IWL_DEBUG_MAC80211(priv, "enter to channel %d\n",
3730 conf->channel->hw_value);
3732 if (!iwl_is_ready(priv)) {
3733 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
3738 if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
3739 test_bit(STATUS_SCANNING, &priv->status))) {
3740 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
3741 set_bit(STATUS_CONF_PENDING, &priv->status);
3742 mutex_unlock(&priv->mutex);
3746 spin_lock_irqsave(&priv->lock, flags);
3748 ch_info = iwl_get_channel_info(priv, conf->channel->band,
3749 conf->channel->hw_value);
3750 if (!is_channel_valid(ch_info)) {
3751 IWL_DEBUG_SCAN(priv,
3752 "Channel %d [%d] is INVALID for this band.\n",
3753 conf->channel->hw_value, conf->channel->band);
3754 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
3755 spin_unlock_irqrestore(&priv->lock, flags);
3760 iwl_set_rxon_channel(priv, conf->channel);
3762 iwl_set_flags_for_band(priv, conf->channel->band);
3764 /* The list of supported rates and rate mask can be different
3765 * for each phymode; since the phymode may have changed, reset
3766 * the rate mask to what mac80211 lists */
3769 spin_unlock_irqrestore(&priv->lock, flags);
3771 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3772 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3773 iwl3945_hw_channel_switch(priv, conf->channel);
3778 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
3779 if (conf->radio_enabled &&
3780 iwl_radio_kill_sw_enable_radio(priv)) {
3781 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
3782 "waiting for uCode\n");
3786 if (!conf->radio_enabled) {
3787 iwl_radio_kill_sw_disable_radio(priv);
3788 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
3793 if (iwl_is_rfkill(priv)) {
3794 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
3801 if (memcmp(&priv->active_rxon,
3802 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3803 iwl3945_commit_rxon(priv);
3805 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration\n");
3807 IWL_DEBUG_MAC80211(priv, "leave\n");
3810 clear_bit(STATUS_CONF_PENDING, &priv->status);
3811 mutex_unlock(&priv->mutex);
3815 static void iwl3945_config_ap(struct iwl_priv *priv)
3819 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3822 /* The following should be done only at AP bring up */
3823 if (!(iwl_is_associated(priv))) {
3825 /* RXON - unassoc (to set timing command) */
3826 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3827 iwl3945_commit_rxon(priv);
3830 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3831 iwl3945_setup_rxon_timing(priv);
3832 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3833 sizeof(priv->rxon_timing),
3834 &priv->rxon_timing);
3836 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3837 "Attempting to continue.\n");
3839 /* FIXME: what should be the assoc_id for AP? */
3840 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3841 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3842 priv->staging_rxon.flags |=
3843 RXON_FLG_SHORT_PREAMBLE_MSK;
3845 priv->staging_rxon.flags &=
3846 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3848 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3849 if (priv->assoc_capability &
3850 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3851 priv->staging_rxon.flags |=
3852 RXON_FLG_SHORT_SLOT_MSK;
3854 priv->staging_rxon.flags &=
3855 ~RXON_FLG_SHORT_SLOT_MSK;
3857 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3858 priv->staging_rxon.flags &=
3859 ~RXON_FLG_SHORT_SLOT_MSK;
3861 /* restore RXON assoc */
3862 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3863 iwl3945_commit_rxon(priv);
3864 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
3866 iwl3945_send_beacon_cmd(priv);
3868 /* FIXME - we need to add code here to detect a totally new
3869 * configuration, reset the AP, unassoc, rxon timing, assoc,
3870 * clear sta table, add BCAST sta... */
3873 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
3874 struct ieee80211_vif *vif,
3875 struct ieee80211_if_conf *conf)
3877 struct iwl_priv *priv = hw->priv;
3883 if (priv->vif != vif) {
3884 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
3888 /* handle this temporarily here */
3889 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
3890 conf->changed & IEEE80211_IFCC_BEACON) {
3891 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
3894 mutex_lock(&priv->mutex);
3895 rc = iwl3945_mac_beacon_update(hw, beacon);
3896 mutex_unlock(&priv->mutex);
3901 if (!iwl_is_alive(priv))
3904 mutex_lock(&priv->mutex);
3907 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
3910 * very dubious code was here; the probe filtering flag is never set:
3912 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3913 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3916 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3918 conf->bssid = priv->mac_addr;
3919 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3920 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
3923 if (priv->ibss_beacon)
3924 dev_kfree_skb(priv->ibss_beacon);
3926 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3929 if (iwl_is_rfkill(priv))
3932 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3933 !is_multicast_ether_addr(conf->bssid)) {
3934 /* If there is currently a HW scan going on in the background
3935 * then we need to cancel it else the RXON below will fail. */
3936 if (iwl_scan_cancel_timeout(priv, 100)) {
3937 IWL_WARN(priv, "Aborted scan still in progress "
3939 IWL_DEBUG_MAC80211(priv, "leaving:scan abort failed\n");
3940 mutex_unlock(&priv->mutex);
3943 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3945 /* TODO: Audit driver for usage of these members and see
3946 * if mac80211 deprecates them (priv->bssid looks like it
3947 * shouldn't be there, but I haven't scanned the IBSS code
3948 * to verify) - jpk */
3949 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3951 if (priv->iw_mode == NL80211_IFTYPE_AP)
3952 iwl3945_config_ap(priv);
3954 rc = iwl3945_commit_rxon(priv);
3955 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3956 iwl3945_add_station(priv,
3957 priv->active_rxon.bssid_addr, 1, 0);
3961 iwl_scan_cancel_timeout(priv, 100);
3962 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3963 iwl3945_commit_rxon(priv);
3967 IWL_DEBUG_MAC80211(priv, "leave\n");
3968 mutex_unlock(&priv->mutex);
3973 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
3974 struct ieee80211_if_init_conf *conf)
3976 struct iwl_priv *priv = hw->priv;
3978 IWL_DEBUG_MAC80211(priv, "enter\n");
3980 mutex_lock(&priv->mutex);
3982 if (iwl_is_ready_rf(priv)) {
3983 iwl_scan_cancel_timeout(priv, 100);
3984 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3985 iwl3945_commit_rxon(priv);
3987 if (priv->vif == conf->vif) {
3989 memset(priv->bssid, 0, ETH_ALEN);
3991 mutex_unlock(&priv->mutex);
3993 IWL_DEBUG_MAC80211(priv, "leave\n");
3996 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3998 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
3999 struct ieee80211_vif *vif,
4000 struct ieee80211_bss_conf *bss_conf,
4003 struct iwl_priv *priv = hw->priv;
4005 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
4007 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4008 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
4009 bss_conf->use_short_preamble);
4010 if (bss_conf->use_short_preamble)
4011 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4013 priv->staging_rxon.flags &=
4014 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4017 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4018 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n",
4019 bss_conf->use_cts_prot);
4020 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4021 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4023 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4026 if (changes & BSS_CHANGED_ASSOC) {
4027 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
4028 /* This should never happen as this function should
4029 * never be called from interrupt context. */
4030 if (WARN_ON_ONCE(in_interrupt()))
4032 if (bss_conf->assoc) {
4033 priv->assoc_id = bss_conf->aid;
4034 priv->beacon_int = bss_conf->beacon_int;
4035 priv->timestamp = bss_conf->timestamp;
4036 priv->assoc_capability = bss_conf->assoc_capability;
4037 priv->power_data.dtim_period = bss_conf->dtim_period;
4038 priv->next_scan_jiffies = jiffies +
4039 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4040 mutex_lock(&priv->mutex);
4041 iwl3945_post_associate(priv);
4042 mutex_unlock(&priv->mutex);
4045 IWL_DEBUG_MAC80211(priv,
4046 "DISASSOC %d\n", bss_conf->assoc);
4048 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4049 IWL_DEBUG_MAC80211(priv,
4050 "Associated Changes %d\n", changes);
4051 iwl3945_send_rxon_assoc(priv);
4056 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4057 struct ieee80211_vif *vif,
4058 struct ieee80211_sta *sta,
4059 struct ieee80211_key_conf *key)
4061 struct iwl_priv *priv = hw->priv;
4064 u8 sta_id = IWL_INVALID_STATION;
4067 IWL_DEBUG_MAC80211(priv, "enter\n");
4069 if (iwl3945_mod_params.sw_crypto) {
4070 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
4074 addr = sta ? sta->addr : iwl_bcast_addr;
4075 static_key = !iwl_is_associated(priv);
4078 sta_id = iwl3945_hw_find_station(priv, addr);
4079 if (sta_id == IWL_INVALID_STATION) {
4080 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
4086 mutex_lock(&priv->mutex);
4087 iwl_scan_cancel_timeout(priv, 100);
4088 mutex_unlock(&priv->mutex);
4093 ret = iwl3945_set_static_key(priv, key);
4095 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
4096 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
4100 ret = iwl3945_remove_static_key(priv);
4102 ret = iwl3945_clear_sta_key_info(priv, sta_id);
4103 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
4109 IWL_DEBUG_MAC80211(priv, "leave\n");
4114 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4115 const struct ieee80211_tx_queue_params *params)
4117 struct iwl_priv *priv = hw->priv;
4118 unsigned long flags;
4121 IWL_DEBUG_MAC80211(priv, "enter\n");
4123 if (!iwl_is_ready_rf(priv)) {
4124 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4128 if (queue >= AC_NUM) {
4129 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
4133 q = AC_NUM - 1 - queue;
4135 spin_lock_irqsave(&priv->lock, flags);
4137 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4138 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4139 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4140 priv->qos_data.def_qos_parm.ac[q].edca_txop =
4141 cpu_to_le16((params->txop * 32));
4143 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4144 priv->qos_data.qos_active = 1;
4146 spin_unlock_irqrestore(&priv->lock, flags);
4148 mutex_lock(&priv->mutex);
4149 if (priv->iw_mode == NL80211_IFTYPE_AP)
4150 iwl_activate_qos(priv, 1);
4151 else if (priv->assoc_id && iwl_is_associated(priv))
4152 iwl_activate_qos(priv, 0);
4154 mutex_unlock(&priv->mutex);
4156 IWL_DEBUG_MAC80211(priv, "leave\n");
4160 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
4161 struct ieee80211_tx_queue_stats *stats)
4163 struct iwl_priv *priv = hw->priv;
4165 struct iwl_tx_queue *txq;
4166 struct iwl_queue *q;
4167 unsigned long flags;
4169 IWL_DEBUG_MAC80211(priv, "enter\n");
4171 if (!iwl_is_ready_rf(priv)) {
4172 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4176 spin_lock_irqsave(&priv->lock, flags);
4178 for (i = 0; i < AC_NUM; i++) {
4179 txq = &priv->txq[i];
4181 avail = iwl_queue_space(q);
4183 stats[i].len = q->n_window - avail;
4184 stats[i].limit = q->n_window - q->high_mark;
4185 stats[i].count = q->n_window;
4188 spin_unlock_irqrestore(&priv->lock, flags);
4190 IWL_DEBUG_MAC80211(priv, "leave\n");
4195 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
4197 struct iwl_priv *priv = hw->priv;
4198 unsigned long flags;
4200 mutex_lock(&priv->mutex);
4201 IWL_DEBUG_MAC80211(priv, "enter\n");
4203 iwl_reset_qos(priv);
4205 spin_lock_irqsave(&priv->lock, flags);
4207 priv->assoc_capability = 0;
4209 /* new association get rid of ibss beacon skb */
4210 if (priv->ibss_beacon)
4211 dev_kfree_skb(priv->ibss_beacon);
4213 priv->ibss_beacon = NULL;
4215 priv->beacon_int = priv->hw->conf.beacon_int;
4216 priv->timestamp = 0;
4217 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
4218 priv->beacon_int = 0;
4220 spin_unlock_irqrestore(&priv->lock, flags);
4222 if (!iwl_is_ready_rf(priv)) {
4223 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4224 mutex_unlock(&priv->mutex);
4228 /* we are restarting association process
4229 * clear RXON_FILTER_ASSOC_MSK bit
4231 if (priv->iw_mode != NL80211_IFTYPE_AP) {
4232 iwl_scan_cancel_timeout(priv, 100);
4233 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4234 iwl3945_commit_rxon(priv);
4237 /* Per mac80211.h: This is only used in IBSS mode... */
4238 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4240 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
4241 mutex_unlock(&priv->mutex);
4247 mutex_unlock(&priv->mutex);
4249 IWL_DEBUG_MAC80211(priv, "leave\n");
4253 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4255 struct iwl_priv *priv = hw->priv;
4256 unsigned long flags;
4259 IWL_DEBUG_MAC80211(priv, "enter\n");
4261 if (!iwl_is_ready_rf(priv)) {
4262 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4266 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4267 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
4271 spin_lock_irqsave(&priv->lock, flags);
4273 if (priv->ibss_beacon)
4274 dev_kfree_skb(priv->ibss_beacon);
4276 priv->ibss_beacon = skb;
4279 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
4280 priv->timestamp = le64_to_cpu(timestamp);
4282 IWL_DEBUG_MAC80211(priv, "leave\n");
4283 spin_unlock_irqrestore(&priv->lock, flags);
4285 iwl_reset_qos(priv);
4287 iwl3945_post_associate(priv);
4293 /*****************************************************************************
4297 *****************************************************************************/
4299 #ifdef CONFIG_IWLWIFI_DEBUG
4302 * The following adds a new attribute to the sysfs representation
4303 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4304 * used for controlling the debug level.
4306 * See the level definitions in iwl for details.
4308 static ssize_t show_debug_level(struct device *d,
4309 struct device_attribute *attr, char *buf)
4311 struct iwl_priv *priv = d->driver_data;
4313 return sprintf(buf, "0x%08X\n", priv->debug_level);
4315 static ssize_t store_debug_level(struct device *d,
4316 struct device_attribute *attr,
4317 const char *buf, size_t count)
4319 struct iwl_priv *priv = d->driver_data;
4323 ret = strict_strtoul(buf, 0, &val);
4325 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
4327 priv->debug_level = val;
4329 return strnlen(buf, count);
4332 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4333 show_debug_level, store_debug_level);
4335 #endif /* CONFIG_IWLWIFI_DEBUG */
4337 static ssize_t show_temperature(struct device *d,
4338 struct device_attribute *attr, char *buf)
4340 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4342 if (!iwl_is_alive(priv))
4345 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
4348 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4350 static ssize_t show_tx_power(struct device *d,
4351 struct device_attribute *attr, char *buf)
4353 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4354 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
4357 static ssize_t store_tx_power(struct device *d,
4358 struct device_attribute *attr,
4359 const char *buf, size_t count)
4361 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4362 char *p = (char *)buf;
4365 val = simple_strtoul(p, &p, 10);
4367 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
4369 iwl3945_hw_reg_set_txpower(priv, val);
4374 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4376 static ssize_t show_flags(struct device *d,
4377 struct device_attribute *attr, char *buf)
4379 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4381 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4384 static ssize_t store_flags(struct device *d,
4385 struct device_attribute *attr,
4386 const char *buf, size_t count)
4388 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4389 u32 flags = simple_strtoul(buf, NULL, 0);
4391 mutex_lock(&priv->mutex);
4392 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4393 /* Cancel any currently running scans... */
4394 if (iwl_scan_cancel_timeout(priv, 100))
4395 IWL_WARN(priv, "Could not cancel scan.\n");
4397 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
4399 priv->staging_rxon.flags = cpu_to_le32(flags);
4400 iwl3945_commit_rxon(priv);
4403 mutex_unlock(&priv->mutex);
4408 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4410 static ssize_t show_filter_flags(struct device *d,
4411 struct device_attribute *attr, char *buf)
4413 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4415 return sprintf(buf, "0x%04X\n",
4416 le32_to_cpu(priv->active_rxon.filter_flags));
4419 static ssize_t store_filter_flags(struct device *d,
4420 struct device_attribute *attr,
4421 const char *buf, size_t count)
4423 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4424 u32 filter_flags = simple_strtoul(buf, NULL, 0);
4426 mutex_lock(&priv->mutex);
4427 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4428 /* Cancel any currently running scans... */
4429 if (iwl_scan_cancel_timeout(priv, 100))
4430 IWL_WARN(priv, "Could not cancel scan.\n");
4432 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
4433 "0x%04X\n", filter_flags);
4434 priv->staging_rxon.filter_flags =
4435 cpu_to_le32(filter_flags);
4436 iwl3945_commit_rxon(priv);
4439 mutex_unlock(&priv->mutex);
4444 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4445 store_filter_flags);
4447 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4449 static ssize_t show_measurement(struct device *d,
4450 struct device_attribute *attr, char *buf)
4452 struct iwl_priv *priv = dev_get_drvdata(d);
4453 struct iwl_spectrum_notification measure_report;
4454 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4455 u8 *data = (u8 *)&measure_report;
4456 unsigned long flags;
4458 spin_lock_irqsave(&priv->lock, flags);
4459 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4460 spin_unlock_irqrestore(&priv->lock, flags);
4463 memcpy(&measure_report, &priv->measure_report, size);
4464 priv->measurement_status = 0;
4465 spin_unlock_irqrestore(&priv->lock, flags);
4467 while (size && (PAGE_SIZE - len)) {
4468 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4469 PAGE_SIZE - len, 1);
4471 if (PAGE_SIZE - len)
4475 size -= min(size, 16U);
4481 static ssize_t store_measurement(struct device *d,
4482 struct device_attribute *attr,
4483 const char *buf, size_t count)
4485 struct iwl_priv *priv = dev_get_drvdata(d);
4486 struct ieee80211_measurement_params params = {
4487 .channel = le16_to_cpu(priv->active_rxon.channel),
4488 .start_time = cpu_to_le64(priv->last_tsf),
4489 .duration = cpu_to_le16(1),
4491 u8 type = IWL_MEASURE_BASIC;
4497 strncpy(buffer, buf, min(sizeof(buffer), count));
4498 channel = simple_strtoul(p, NULL, 0);
4500 params.channel = channel;
4503 while (*p && *p != ' ')
4506 type = simple_strtoul(p + 1, NULL, 0);
4509 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
4510 "channel %d (for '%s')\n", type, params.channel, buf);
4511 iwl3945_get_measurement(priv, ¶ms, type);
4516 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4517 show_measurement, store_measurement);
4518 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
4520 static ssize_t store_retry_rate(struct device *d,
4521 struct device_attribute *attr,
4522 const char *buf, size_t count)
4524 struct iwl_priv *priv = dev_get_drvdata(d);
4526 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4527 if (priv->retry_rate <= 0)
4528 priv->retry_rate = 1;
4533 static ssize_t show_retry_rate(struct device *d,
4534 struct device_attribute *attr, char *buf)
4536 struct iwl_priv *priv = dev_get_drvdata(d);
4537 return sprintf(buf, "%d", priv->retry_rate);
4540 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4544 static ssize_t store_power_level(struct device *d,
4545 struct device_attribute *attr,
4546 const char *buf, size_t count)
4548 struct iwl_priv *priv = dev_get_drvdata(d);
4553 mutex_lock(&priv->mutex);
4555 ret = strict_strtoul(buf, 10, &mode);
4559 ret = iwl_power_set_user_mode(priv, mode);
4561 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
4567 mutex_unlock(&priv->mutex);
4571 static ssize_t show_power_level(struct device *d,
4572 struct device_attribute *attr, char *buf)
4574 struct iwl_priv *priv = dev_get_drvdata(d);
4575 int mode = priv->power_data.user_power_setting;
4576 int system = priv->power_data.system_power_setting;
4577 int level = priv->power_data.power_mode;
4581 case IWL_POWER_SYS_AUTO:
4582 p += sprintf(p, "SYSTEM:auto");
4584 case IWL_POWER_SYS_AC:
4585 p += sprintf(p, "SYSTEM:ac");
4587 case IWL_POWER_SYS_BATTERY:
4588 p += sprintf(p, "SYSTEM:battery");
4592 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
4594 p += sprintf(p, "\tINDEX:%d", level);
4595 p += sprintf(p, "\n");
4599 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
4600 show_power_level, store_power_level);
4602 #define MAX_WX_STRING 80
4604 /* Values are in microsecond */
4605 static const s32 timeout_duration[] = {
4612 static const s32 period_duration[] = {
4620 static ssize_t show_channels(struct device *d,
4621 struct device_attribute *attr, char *buf)
4623 /* all this shit doesn't belong into sysfs anyway */
4627 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4629 static ssize_t show_statistics(struct device *d,
4630 struct device_attribute *attr, char *buf)
4632 struct iwl_priv *priv = dev_get_drvdata(d);
4633 u32 size = sizeof(struct iwl3945_notif_statistics);
4634 u32 len = 0, ofs = 0;
4635 u8 *data = (u8 *)&priv->statistics_39;
4638 if (!iwl_is_alive(priv))
4641 mutex_lock(&priv->mutex);
4642 rc = iwl_send_statistics_request(priv, 0);
4643 mutex_unlock(&priv->mutex);
4647 "Error sending statistics request: 0x%08X\n", rc);
4651 while (size && (PAGE_SIZE - len)) {
4652 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4653 PAGE_SIZE - len, 1);
4655 if (PAGE_SIZE - len)
4659 size -= min(size, 16U);
4665 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4667 static ssize_t show_antenna(struct device *d,
4668 struct device_attribute *attr, char *buf)
4670 struct iwl_priv *priv = dev_get_drvdata(d);
4672 if (!iwl_is_alive(priv))
4675 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
4678 static ssize_t store_antenna(struct device *d,
4679 struct device_attribute *attr,
4680 const char *buf, size_t count)
4682 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
4688 if (sscanf(buf, "%1i", &ant) != 1) {
4689 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
4693 if ((ant >= 0) && (ant <= 2)) {
4694 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
4695 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
4697 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
4703 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
4705 static ssize_t show_status(struct device *d,
4706 struct device_attribute *attr, char *buf)
4708 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4709 if (!iwl_is_alive(priv))
4711 return sprintf(buf, "0x%08x\n", (int)priv->status);
4714 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4716 static ssize_t dump_error_log(struct device *d,
4717 struct device_attribute *attr,
4718 const char *buf, size_t count)
4720 char *p = (char *)buf;
4723 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
4725 return strnlen(buf, count);
4728 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
4730 static ssize_t dump_event_log(struct device *d,
4731 struct device_attribute *attr,
4732 const char *buf, size_t count)
4734 char *p = (char *)buf;
4737 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
4739 return strnlen(buf, count);
4742 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
4744 /*****************************************************************************
4746 * driver setup and tear down
4748 *****************************************************************************/
4750 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
4752 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4754 init_waitqueue_head(&priv->wait_command_queue);
4756 INIT_WORK(&priv->up, iwl3945_bg_up);
4757 INIT_WORK(&priv->restart, iwl3945_bg_restart);
4758 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
4759 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4760 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
4761 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
4762 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
4763 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
4764 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4765 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
4766 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
4767 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
4769 iwl3945_hw_setup_deferred_work(priv);
4771 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4772 iwl3945_irq_tasklet, (unsigned long)priv);
4775 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4777 iwl3945_hw_cancel_deferred_work(priv);
4779 cancel_delayed_work_sync(&priv->init_alive_start);
4780 cancel_delayed_work(&priv->scan_check);
4781 cancel_delayed_work(&priv->alive_start);
4782 cancel_work_sync(&priv->beacon_update);
4785 static struct attribute *iwl3945_sysfs_entries[] = {
4786 &dev_attr_antenna.attr,
4787 &dev_attr_channels.attr,
4788 &dev_attr_dump_errors.attr,
4789 &dev_attr_dump_events.attr,
4790 &dev_attr_flags.attr,
4791 &dev_attr_filter_flags.attr,
4792 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4793 &dev_attr_measurement.attr,
4795 &dev_attr_power_level.attr,
4796 &dev_attr_retry_rate.attr,
4797 &dev_attr_statistics.attr,
4798 &dev_attr_status.attr,
4799 &dev_attr_temperature.attr,
4800 &dev_attr_tx_power.attr,
4801 #ifdef CONFIG_IWLWIFI_DEBUG
4802 &dev_attr_debug_level.attr,
4807 static struct attribute_group iwl3945_attribute_group = {
4808 .name = NULL, /* put in device directory */
4809 .attrs = iwl3945_sysfs_entries,
4812 static struct ieee80211_ops iwl3945_hw_ops = {
4813 .tx = iwl3945_mac_tx,
4814 .start = iwl3945_mac_start,
4815 .stop = iwl3945_mac_stop,
4816 .add_interface = iwl3945_mac_add_interface,
4817 .remove_interface = iwl3945_mac_remove_interface,
4818 .config = iwl3945_mac_config,
4819 .config_interface = iwl3945_mac_config_interface,
4820 .configure_filter = iwl_configure_filter,
4821 .set_key = iwl3945_mac_set_key,
4822 .get_tx_stats = iwl3945_mac_get_tx_stats,
4823 .conf_tx = iwl3945_mac_conf_tx,
4824 .reset_tsf = iwl3945_mac_reset_tsf,
4825 .bss_info_changed = iwl3945_bss_info_changed,
4826 .hw_scan = iwl_mac_hw_scan
4829 static int iwl3945_init_drv(struct iwl_priv *priv)
4832 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4834 priv->retry_rate = 1;
4835 priv->ibss_beacon = NULL;
4837 spin_lock_init(&priv->lock);
4838 spin_lock_init(&priv->power_data.lock);
4839 spin_lock_init(&priv->sta_lock);
4840 spin_lock_init(&priv->hcmd_lock);
4842 INIT_LIST_HEAD(&priv->free_frames);
4844 mutex_init(&priv->mutex);
4846 /* Clear the driver's (not device's) station table */
4847 iwl3945_clear_stations_table(priv);
4849 priv->data_retry_limit = -1;
4850 priv->ieee_channels = NULL;
4851 priv->ieee_rates = NULL;
4852 priv->band = IEEE80211_BAND_2GHZ;
4854 priv->iw_mode = NL80211_IFTYPE_STATION;
4856 iwl_reset_qos(priv);
4858 priv->qos_data.qos_active = 0;
4859 priv->qos_data.qos_cap.val = 0;
4861 priv->rates_mask = IWL_RATES_MASK;
4862 /* If power management is turned on, default to CAM mode */
4863 priv->power_mode = IWL_POWER_MODE_CAM;
4864 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4866 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4867 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4872 ret = iwl_init_channel_map(priv);
4874 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4878 /* Set up txpower settings in driver for all channels */
4879 if (iwl3945_txpower_set_from_eeprom(priv)) {
4881 goto err_free_channel_map;
4884 ret = iwlcore_init_geos(priv);
4886 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4887 goto err_free_channel_map;
4889 iwl3945_init_hw_rates(priv, priv->ieee_rates);
4893 err_free_channel_map:
4894 iwl_free_channel_map(priv);
4899 static int iwl3945_setup_mac(struct iwl_priv *priv)
4902 struct ieee80211_hw *hw = priv->hw;
4904 hw->rate_control_algorithm = "iwl-3945-rs";
4905 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4907 /* Tell mac80211 our characteristics */
4908 hw->flags = IEEE80211_HW_SIGNAL_DBM |
4909 IEEE80211_HW_NOISE_DBM |
4910 IEEE80211_HW_SPECTRUM_MGMT;
4912 hw->wiphy->interface_modes =
4913 BIT(NL80211_IFTYPE_STATION) |
4914 BIT(NL80211_IFTYPE_ADHOC);
4916 hw->wiphy->custom_regulatory = true;
4918 hw->wiphy->max_scan_ssids = 1; /* WILL FIX */
4920 /* Default value; 4 EDCA QOS priorities */
4923 hw->conf.beacon_int = 100;
4925 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4926 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4927 &priv->bands[IEEE80211_BAND_2GHZ];
4929 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4930 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4931 &priv->bands[IEEE80211_BAND_5GHZ];
4933 ret = ieee80211_register_hw(priv->hw);
4935 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4938 priv->mac80211_registered = 1;
4943 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4946 struct iwl_priv *priv;
4947 struct ieee80211_hw *hw;
4948 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4949 struct iwl3945_eeprom *eeprom;
4950 unsigned long flags;
4952 /***********************
4953 * 1. Allocating HW data
4954 * ********************/
4956 /* mac80211 allocates memory for this device instance, including
4957 * space for this driver's private structure */
4958 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4960 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4965 SET_IEEE80211_DEV(hw, &pdev->dev);
4967 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4968 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4970 "invalid queues_num, should be between %d and %d\n",
4971 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4973 goto out_ieee80211_free_hw;
4977 * Disabling hardware scan means that mac80211 will perform scans
4978 * "the hard way", rather than using device's scan.
4980 if (iwl3945_mod_params.disable_hw_scan) {
4981 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4982 iwl3945_hw_ops.hw_scan = NULL;
4986 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4988 priv->pci_dev = pdev;
4990 #ifdef CONFIG_IWLWIFI_DEBUG
4991 priv->debug_level = iwl3945_mod_params.debug;
4992 atomic_set(&priv->restrict_refcnt, 0);
4995 /***************************
4996 * 2. Initializing PCI bus
4997 * *************************/
4998 if (pci_enable_device(pdev)) {
5000 goto out_ieee80211_free_hw;
5003 pci_set_master(pdev);
5005 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5007 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
5009 IWL_WARN(priv, "No suitable DMA available.\n");
5010 goto out_pci_disable_device;
5013 pci_set_drvdata(pdev, priv);
5014 err = pci_request_regions(pdev, DRV_NAME);
5016 goto out_pci_disable_device;
5018 /***********************
5019 * 3. Read REV Register
5020 * ********************/
5021 priv->hw_base = pci_iomap(pdev, 0, 0);
5022 if (!priv->hw_base) {
5024 goto out_pci_release_regions;
5027 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
5028 (unsigned long long) pci_resource_len(pdev, 0));
5029 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
5031 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5032 * PCI Tx retries from interfering with C3 CPU state */
5033 pci_write_config_byte(pdev, 0x41, 0x00);
5036 err = priv->cfg->ops->lib->apm_ops.init(priv);
5038 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
5042 /***********************
5044 * ********************/
5046 /* Read the EEPROM */
5047 err = iwl_eeprom_init(priv);
5049 IWL_ERR(priv, "Unable to init EEPROM\n");
5052 /* MAC Address location in EEPROM same for 3945/4965 */
5053 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5054 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
5055 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
5056 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5058 /***********************
5059 * 5. Setup HW Constants
5060 * ********************/
5061 /* Device-specific setup */
5062 if (iwl3945_hw_set_hw_params(priv)) {
5063 IWL_ERR(priv, "failed to set hw settings\n");
5064 goto out_eeprom_free;
5067 /***********************
5069 * ********************/
5071 err = iwl3945_init_drv(priv);
5073 IWL_ERR(priv, "initializing driver failed\n");
5074 goto out_unset_hw_params;
5077 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
5080 /***********************************
5081 * 7. Initialize Module Parameters
5082 * **********************************/
5084 /* Initialize module parameter values here */
5085 /* Disable radio (SW RF KILL) via parameter when loading driver */
5086 if (iwl3945_mod_params.disable) {
5087 set_bit(STATUS_RF_KILL_SW, &priv->status);
5088 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
5092 /***********************
5094 * ********************/
5096 spin_lock_irqsave(&priv->lock, flags);
5097 iwl_disable_interrupts(priv);
5098 spin_unlock_irqrestore(&priv->lock, flags);
5100 pci_enable_msi(priv->pci_dev);
5102 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
5105 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5106 goto out_disable_msi;
5109 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5111 IWL_ERR(priv, "failed to create sysfs device attributes\n");
5112 goto out_release_irq;
5115 iwl_set_rxon_channel(priv,
5116 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
5117 iwl3945_setup_deferred_work(priv);
5118 iwl3945_setup_rx_handlers(priv);
5120 /*********************************
5121 * 9. Setup and Register mac80211
5122 * *******************************/
5124 iwl_enable_interrupts(priv);
5126 err = iwl3945_setup_mac(priv);
5128 goto out_remove_sysfs;
5130 err = iwl_rfkill_init(priv);
5132 IWL_ERR(priv, "Unable to initialize RFKILL system. "
5133 "Ignoring error: %d\n", err);
5135 iwl_rfkill_set_hw_state(priv);
5137 /* Start monitoring the killswitch */
5138 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5144 destroy_workqueue(priv->workqueue);
5145 priv->workqueue = NULL;
5146 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5148 free_irq(priv->pci_dev->irq, priv);
5150 pci_disable_msi(priv->pci_dev);
5151 iwlcore_free_geos(priv);
5152 iwl_free_channel_map(priv);
5153 out_unset_hw_params:
5154 iwl3945_unset_hw_params(priv);
5156 iwl_eeprom_free(priv);
5158 pci_iounmap(pdev, priv->hw_base);
5159 out_pci_release_regions:
5160 pci_release_regions(pdev);
5161 out_pci_disable_device:
5162 pci_set_drvdata(pdev, NULL);
5163 pci_disable_device(pdev);
5164 out_ieee80211_free_hw:
5165 ieee80211_free_hw(priv->hw);
5170 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
5172 struct iwl_priv *priv = pci_get_drvdata(pdev);
5173 unsigned long flags;
5178 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
5180 set_bit(STATUS_EXIT_PENDING, &priv->status);
5182 if (priv->mac80211_registered) {
5183 ieee80211_unregister_hw(priv->hw);
5184 priv->mac80211_registered = 0;
5189 /* make sure we flush any pending irq or
5190 * tasklet for the driver
5192 spin_lock_irqsave(&priv->lock, flags);
5193 iwl_disable_interrupts(priv);
5194 spin_unlock_irqrestore(&priv->lock, flags);
5196 iwl_synchronize_irq(priv);
5198 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5200 iwl_rfkill_unregister(priv);
5201 cancel_delayed_work_sync(&priv->rfkill_poll);
5203 iwl3945_dealloc_ucode_pci(priv);
5206 iwl_rx_queue_free(priv, &priv->rxq);
5207 iwl3945_hw_txq_ctx_free(priv);
5209 iwl3945_unset_hw_params(priv);
5210 iwl3945_clear_stations_table(priv);
5212 /*netif_stop_queue(dev); */
5213 flush_workqueue(priv->workqueue);
5215 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
5216 * priv->workqueue... so we can't take down the workqueue
5218 destroy_workqueue(priv->workqueue);
5219 priv->workqueue = NULL;
5221 free_irq(pdev->irq, priv);
5222 pci_disable_msi(pdev);
5224 pci_iounmap(pdev, priv->hw_base);
5225 pci_release_regions(pdev);
5226 pci_disable_device(pdev);
5227 pci_set_drvdata(pdev, NULL);
5229 iwl_free_channel_map(priv);
5230 iwlcore_free_geos(priv);
5232 if (priv->ibss_beacon)
5233 dev_kfree_skb(priv->ibss_beacon);
5235 ieee80211_free_hw(priv->hw);
5240 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5242 struct iwl_priv *priv = pci_get_drvdata(pdev);
5244 if (priv->is_open) {
5245 set_bit(STATUS_IN_SUSPEND, &priv->status);
5246 iwl3945_mac_stop(priv->hw);
5249 pci_save_state(pdev);
5250 pci_disable_device(pdev);
5251 pci_set_power_state(pdev, PCI_D3hot);
5256 static int iwl3945_pci_resume(struct pci_dev *pdev)
5258 struct iwl_priv *priv = pci_get_drvdata(pdev);
5261 pci_set_power_state(pdev, PCI_D0);
5262 ret = pci_enable_device(pdev);
5265 pci_restore_state(pdev);
5268 iwl3945_mac_start(priv->hw);
5270 clear_bit(STATUS_IN_SUSPEND, &priv->status);
5274 #endif /* CONFIG_PM */
5276 /*****************************************************************************
5278 * driver and module entry point
5280 *****************************************************************************/
5282 static struct pci_driver iwl3945_driver = {
5284 .id_table = iwl3945_hw_card_ids,
5285 .probe = iwl3945_pci_probe,
5286 .remove = __devexit_p(iwl3945_pci_remove),
5288 .suspend = iwl3945_pci_suspend,
5289 .resume = iwl3945_pci_resume,
5293 static int __init iwl3945_init(void)
5297 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5298 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5300 ret = iwl3945_rate_control_register();
5302 printk(KERN_ERR DRV_NAME
5303 "Unable to register rate control algorithm: %d\n", ret);
5307 ret = pci_register_driver(&iwl3945_driver);
5309 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
5310 goto error_register;
5316 iwl3945_rate_control_unregister();
5320 static void __exit iwl3945_exit(void)
5322 pci_unregister_driver(&iwl3945_driver);
5323 iwl3945_rate_control_unregister();
5326 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
5328 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
5329 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
5330 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
5331 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
5332 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
5333 MODULE_PARM_DESC(swcrypto,
5334 "using software crypto (default 1 [software])\n");
5335 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
5336 MODULE_PARM_DESC(debug, "debug output mask");
5337 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
5338 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
5340 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
5341 MODULE_PARM_DESC(queues_num, "number of hw queues.");
5343 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
5344 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
5346 module_exit(iwl3945_exit);
5347 module_init(iwl3945_init);