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 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, struct ieee80211_sta_ht_cap *ht_info)
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);
237 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
238 * @priv: eeprom and antenna fields are used to determine antenna flags
240 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
241 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
243 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
244 * IWL_ANTENNA_MAIN - Force MAIN antenna
245 * IWL_ANTENNA_AUX - Force AUX antenna
247 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
249 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
251 switch (iwl3945_mod_params.antenna) {
252 case IWL_ANTENNA_DIVERSITY:
255 case IWL_ANTENNA_MAIN:
256 if (eeprom->antenna_switch_type)
257 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
258 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
260 case IWL_ANTENNA_AUX:
261 if (eeprom->antenna_switch_type)
262 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
263 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
266 /* bad antenna selector value */
267 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
268 iwl3945_mod_params.antenna);
270 return 0; /* "diversity" is default if error */
273 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
274 struct ieee80211_key_conf *keyconf,
278 __le16 key_flags = 0;
281 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
282 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
284 if (sta_id == priv->hw_params.bcast_sta_id)
285 key_flags |= STA_KEY_MULTICAST_MSK;
287 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
288 keyconf->hw_key_idx = keyconf->keyidx;
289 key_flags &= ~STA_KEY_FLG_INVALID;
291 spin_lock_irqsave(&priv->sta_lock, flags);
292 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
293 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
294 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
297 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
300 if ((priv->stations_39[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
301 == STA_KEY_FLG_NO_ENC)
302 priv->stations_39[sta_id].sta.key.key_offset =
303 iwl_get_free_ucode_key_index(priv);
304 /* else, we are overriding an existing key => no need to allocated room
307 WARN(priv->stations_39[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
308 "no space for a new key");
310 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
311 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
312 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
314 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
316 ret = iwl_send_add_sta(priv,
317 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, CMD_ASYNC);
319 spin_unlock_irqrestore(&priv->sta_lock, flags);
324 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
325 struct ieee80211_key_conf *keyconf,
331 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
332 struct ieee80211_key_conf *keyconf,
338 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
342 spin_lock_irqsave(&priv->sta_lock, flags);
343 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
344 memset(&priv->stations_39[sta_id].sta.key, 0,
345 sizeof(struct iwl4965_keyinfo));
346 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
347 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
348 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
349 spin_unlock_irqrestore(&priv->sta_lock, flags);
351 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
352 iwl_send_add_sta(priv,
353 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
357 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
358 struct ieee80211_key_conf *keyconf, u8 sta_id)
362 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
364 switch (keyconf->alg) {
366 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
369 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
372 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
375 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
379 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
380 keyconf->alg, keyconf->keylen, keyconf->keyidx,
386 static int iwl3945_remove_static_key(struct iwl_priv *priv)
388 int ret = -EOPNOTSUPP;
393 static int iwl3945_set_static_key(struct iwl_priv *priv,
394 struct ieee80211_key_conf *key)
396 if (key->alg == ALG_WEP)
399 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
403 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
405 struct list_head *element;
407 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
410 while (!list_empty(&priv->free_frames)) {
411 element = priv->free_frames.next;
413 kfree(list_entry(element, struct iwl3945_frame, list));
414 priv->frames_count--;
417 if (priv->frames_count) {
418 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
420 priv->frames_count = 0;
424 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
426 struct iwl3945_frame *frame;
427 struct list_head *element;
428 if (list_empty(&priv->free_frames)) {
429 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
431 IWL_ERR(priv, "Could not allocate frame!\n");
435 priv->frames_count++;
439 element = priv->free_frames.next;
441 return list_entry(element, struct iwl3945_frame, list);
444 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
446 memset(frame, 0, sizeof(*frame));
447 list_add(&frame->list, &priv->free_frames);
450 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
451 struct ieee80211_hdr *hdr,
455 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
456 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
457 (priv->iw_mode != NL80211_IFTYPE_AP)))
460 if (priv->ibss_beacon->len > left)
463 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
465 return priv->ibss_beacon->len;
468 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
470 struct iwl3945_frame *frame;
471 unsigned int frame_size;
475 frame = iwl3945_get_free_frame(priv);
478 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
483 rate = iwl_rate_get_lowest_plcp(priv);
485 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
487 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
490 iwl3945_free_frame(priv, frame);
495 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
497 if (priv->shared_virt)
498 pci_free_consistent(priv->pci_dev,
499 sizeof(struct iwl3945_shared),
504 #define MAX_UCODE_BEACON_INTERVAL 1024
505 #define INTEL_CONN_LISTEN_INTERVAL cpu_to_le16(0xA)
507 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
510 u16 beacon_factor = 0;
513 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
514 / MAX_UCODE_BEACON_INTERVAL;
515 new_val = beacon_val / beacon_factor;
517 return cpu_to_le16(new_val);
520 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
522 u64 interval_tm_unit;
525 struct ieee80211_conf *conf = NULL;
528 conf = ieee80211_get_hw_conf(priv->hw);
530 spin_lock_irqsave(&priv->lock, flags);
531 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
532 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
534 tsf = priv->timestamp;
536 beacon_int = priv->beacon_int;
537 spin_unlock_irqrestore(&priv->lock, flags);
539 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
540 if (beacon_int == 0) {
541 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
542 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
544 priv->rxon_timing.beacon_interval =
545 cpu_to_le16(beacon_int);
546 priv->rxon_timing.beacon_interval =
547 iwl3945_adjust_beacon_interval(
548 le16_to_cpu(priv->rxon_timing.beacon_interval));
551 priv->rxon_timing.atim_window = 0;
553 priv->rxon_timing.beacon_interval =
554 iwl3945_adjust_beacon_interval(
555 priv->vif->bss_conf.beacon_int);
556 /* TODO: we need to get atim_window from upper stack
557 * for now we set to 0 */
558 priv->rxon_timing.atim_window = 0;
562 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
563 result = do_div(tsf, interval_tm_unit);
564 priv->rxon_timing.beacon_init_val =
565 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
567 IWL_DEBUG_ASSOC(priv,
568 "beacon interval %d beacon timer %d beacon tim %d\n",
569 le16_to_cpu(priv->rxon_timing.beacon_interval),
570 le32_to_cpu(priv->rxon_timing.beacon_init_val),
571 le16_to_cpu(priv->rxon_timing.atim_window));
574 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
575 struct ieee80211_tx_info *info,
577 struct sk_buff *skb_frag,
580 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
581 struct iwl3945_hw_key *keyinfo =
582 &priv->stations_39[sta_id].keyinfo;
584 switch (keyinfo->alg) {
586 tx->sec_ctl = TX_CMD_SEC_CCM;
587 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
588 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
595 tx->sec_ctl = TX_CMD_SEC_WEP |
596 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
598 if (keyinfo->keylen == 13)
599 tx->sec_ctl |= TX_CMD_SEC_KEY128;
601 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
603 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
604 "with key %d\n", info->control.hw_key->hw_key_idx);
608 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
614 * handle build REPLY_TX command notification.
616 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
618 struct ieee80211_tx_info *info,
619 struct ieee80211_hdr *hdr, u8 std_id)
621 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
622 __le32 tx_flags = tx->tx_flags;
623 __le16 fc = hdr->frame_control;
624 u8 rc_flags = info->control.rates[0].flags;
626 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
627 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
628 tx_flags |= TX_CMD_FLG_ACK_MSK;
629 if (ieee80211_is_mgmt(fc))
630 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
631 if (ieee80211_is_probe_resp(fc) &&
632 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
633 tx_flags |= TX_CMD_FLG_TSF_MSK;
635 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
636 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
640 if (ieee80211_has_morefrags(fc))
641 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
643 if (ieee80211_is_data_qos(fc)) {
644 u8 *qc = ieee80211_get_qos_ctl(hdr);
645 tx->tid_tspec = qc[0] & 0xf;
646 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
648 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
651 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
652 tx_flags |= TX_CMD_FLG_RTS_MSK;
653 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
654 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
655 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
656 tx_flags |= TX_CMD_FLG_CTS_MSK;
659 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
660 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
662 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
663 if (ieee80211_is_mgmt(fc)) {
664 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
665 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
667 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
669 tx->timeout.pm_frame_timeout = 0;
670 #ifdef CONFIG_IWLWIFI_LEDS
671 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
676 tx->tx_flags = tx_flags;
677 tx->next_frame_len = 0;
681 * start REPLY_TX command process
683 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
685 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
686 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
687 struct iwl3945_tx_cmd *tx;
688 struct iwl_tx_queue *txq = NULL;
689 struct iwl_queue *q = NULL;
690 struct iwl_cmd *out_cmd = NULL;
691 dma_addr_t phys_addr;
692 dma_addr_t txcmd_phys;
693 int txq_id = skb_get_queue_mapping(skb);
694 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
701 u8 wait_write_ptr = 0;
706 spin_lock_irqsave(&priv->lock, flags);
707 if (iwl_is_rfkill(priv)) {
708 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
712 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
713 IWL_ERR(priv, "ERROR: No TX rate available.\n");
717 unicast = !is_multicast_ether_addr(hdr->addr1);
720 fc = hdr->frame_control;
722 #ifdef CONFIG_IWLWIFI_DEBUG
723 if (ieee80211_is_auth(fc))
724 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
725 else if (ieee80211_is_assoc_req(fc))
726 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
727 else if (ieee80211_is_reassoc_req(fc))
728 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
731 /* drop all data frame if we are not associated */
732 if (ieee80211_is_data(fc) &&
733 (!iwl_is_monitor_mode(priv)) && /* packet injection */
734 (!iwl_is_associated(priv) ||
735 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
736 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
740 spin_unlock_irqrestore(&priv->lock, flags);
742 hdr_len = ieee80211_hdrlen(fc);
744 /* Find (or create) index into station table for destination station */
745 sta_id = iwl_get_sta_id(priv, hdr);
746 if (sta_id == IWL_INVALID_STATION) {
747 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
752 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
754 if (ieee80211_is_data_qos(fc)) {
755 qc = ieee80211_get_qos_ctl(hdr);
756 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
757 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
759 hdr->seq_ctrl = cpu_to_le16(seq_number) |
761 cpu_to_le16(IEEE80211_SCTL_FRAG));
765 /* Descriptor for chosen Tx queue */
766 txq = &priv->txq[txq_id];
769 spin_lock_irqsave(&priv->lock, flags);
771 idx = get_cmd_index(q, q->write_ptr, 0);
773 /* Set up driver data for this TFD */
774 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
775 txq->txb[q->write_ptr].skb[0] = skb;
777 /* Init first empty entry in queue's array of Tx/cmd buffers */
778 out_cmd = txq->cmd[idx];
779 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
780 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
781 memset(tx, 0, sizeof(*tx));
784 * Set up the Tx-command (not MAC!) header.
785 * Store the chosen Tx queue and TFD index within the sequence field;
786 * after Tx, uCode's Tx response will return this value so driver can
787 * locate the frame within the tx queue and do post-tx processing.
789 out_cmd->hdr.cmd = REPLY_TX;
790 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
791 INDEX_TO_SEQ(q->write_ptr)));
793 /* Copy MAC header from skb into command buffer */
794 memcpy(tx->hdr, hdr, hdr_len);
797 if (info->control.hw_key)
798 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
800 /* TODO need this for burst mode later on */
801 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
803 /* set is_hcca to 0; it probably will never be implemented */
804 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
806 /* Total # bytes to be transmitted */
808 tx->len = cpu_to_le16(len);
811 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
812 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
814 if (!ieee80211_has_morefrags(hdr->frame_control)) {
815 txq->need_update = 1;
817 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
820 txq->need_update = 0;
823 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
824 le16_to_cpu(out_cmd->hdr.sequence));
825 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
826 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
827 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
828 ieee80211_hdrlen(fc));
831 * Use the first empty entry in this queue's command buffer array
832 * to contain the Tx command and MAC header concatenated together
833 * (payload data will be in another buffer).
834 * Size of this varies, due to varying MAC header length.
835 * If end is not dword aligned, we'll have 2 extra bytes at the end
836 * of the MAC header (device reads on dword boundaries).
837 * We'll tell device about this padding later.
839 len = sizeof(struct iwl3945_tx_cmd) +
840 sizeof(struct iwl_cmd_header) + hdr_len;
843 len = (len + 3) & ~3;
850 /* Physical address of this Tx command's header (not MAC header!),
851 * within command buffer array. */
852 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
853 len, PCI_DMA_TODEVICE);
854 /* we do not map meta data ... so we can safely access address to
855 * provide to unmap command*/
856 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
857 pci_unmap_len_set(&out_cmd->meta, len, len);
859 /* Add buffer containing Tx command and MAC(!) header to TFD's
861 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
862 txcmd_phys, len, 1, 0);
865 /* Set up TFD's 2nd entry to point directly to remainder of skb,
866 * if any (802.11 null frames have no payload). */
867 len = skb->len - hdr_len;
869 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
870 len, PCI_DMA_TODEVICE);
871 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
877 /* Tell device the write index *just past* this latest filled TFD */
878 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
879 rc = iwl_txq_update_write_ptr(priv, txq);
880 spin_unlock_irqrestore(&priv->lock, flags);
885 if ((iwl_queue_space(q) < q->high_mark)
886 && priv->mac80211_registered) {
887 if (wait_write_ptr) {
888 spin_lock_irqsave(&priv->lock, flags);
889 txq->need_update = 1;
890 iwl_txq_update_write_ptr(priv, txq);
891 spin_unlock_irqrestore(&priv->lock, flags);
894 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
900 spin_unlock_irqrestore(&priv->lock, flags);
905 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
907 #include "iwl-spectrum.h"
909 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
910 #define BEACON_TIME_MASK_HIGH 0xFF000000
911 #define TIME_UNIT 1024
914 * extended beacon time format
915 * time in usec will be changed into a 32-bit value in 8:24 format
916 * the high 1 byte is the beacon counts
917 * the lower 3 bytes is the time in usec within one beacon interval
920 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
924 u32 interval = beacon_interval * 1024;
926 if (!interval || !usec)
929 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
930 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
932 return (quot << 24) + rem;
935 /* base is usually what we get from ucode with each received frame,
936 * the same as HW timer counter counting down
939 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
941 u32 base_low = base & BEACON_TIME_MASK_LOW;
942 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
943 u32 interval = beacon_interval * TIME_UNIT;
944 u32 res = (base & BEACON_TIME_MASK_HIGH) +
945 (addon & BEACON_TIME_MASK_HIGH);
947 if (base_low > addon_low)
948 res += base_low - addon_low;
949 else if (base_low < addon_low) {
950 res += interval + base_low - addon_low;
955 return cpu_to_le32(res);
958 static int iwl3945_get_measurement(struct iwl_priv *priv,
959 struct ieee80211_measurement_params *params,
962 struct iwl_spectrum_cmd spectrum;
963 struct iwl_rx_packet *res;
964 struct iwl_host_cmd cmd = {
965 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
966 .data = (void *)&spectrum,
967 .meta.flags = CMD_WANT_SKB,
969 u32 add_time = le64_to_cpu(params->start_time);
971 int spectrum_resp_status;
972 int duration = le16_to_cpu(params->duration);
974 if (iwl_is_associated(priv))
976 iwl3945_usecs_to_beacons(
977 le64_to_cpu(params->start_time) - priv->last_tsf,
978 le16_to_cpu(priv->rxon_timing.beacon_interval));
980 memset(&spectrum, 0, sizeof(spectrum));
982 spectrum.channel_count = cpu_to_le16(1);
984 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
985 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
986 cmd.len = sizeof(spectrum);
987 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
989 if (iwl_is_associated(priv))
990 spectrum.start_time =
991 iwl3945_add_beacon_time(priv->last_beacon_time,
993 le16_to_cpu(priv->rxon_timing.beacon_interval));
995 spectrum.start_time = 0;
997 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
998 spectrum.channels[0].channel = params->channel;
999 spectrum.channels[0].type = type;
1000 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1001 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1002 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1004 rc = iwl_send_cmd_sync(priv, &cmd);
1008 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1009 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1010 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1014 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1015 switch (spectrum_resp_status) {
1016 case 0: /* Command will be handled */
1017 if (res->u.spectrum.id != 0xff) {
1018 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1019 res->u.spectrum.id);
1020 priv->measurement_status &= ~MEASUREMENT_READY;
1022 priv->measurement_status |= MEASUREMENT_ACTIVE;
1026 case 1: /* Command will not be handled */
1031 dev_kfree_skb_any(cmd.meta.u.skb);
1037 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1038 struct iwl_rx_mem_buffer *rxb)
1040 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1041 struct iwl_alive_resp *palive;
1042 struct delayed_work *pwork;
1044 palive = &pkt->u.alive_frame;
1046 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1048 palive->is_valid, palive->ver_type,
1049 palive->ver_subtype);
1051 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1052 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1053 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1054 sizeof(struct iwl_alive_resp));
1055 pwork = &priv->init_alive_start;
1057 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1058 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1059 sizeof(struct iwl_alive_resp));
1060 pwork = &priv->alive_start;
1061 iwl3945_disable_events(priv);
1064 /* We delay the ALIVE response by 5ms to
1065 * give the HW RF Kill time to activate... */
1066 if (palive->is_valid == UCODE_VALID_OK)
1067 queue_delayed_work(priv->workqueue, pwork,
1068 msecs_to_jiffies(5));
1070 IWL_WARN(priv, "uCode did not respond OK.\n");
1073 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1074 struct iwl_rx_mem_buffer *rxb)
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1077 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1080 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1084 static void iwl3945_bg_beacon_update(struct work_struct *work)
1086 struct iwl_priv *priv =
1087 container_of(work, struct iwl_priv, beacon_update);
1088 struct sk_buff *beacon;
1090 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1091 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1094 IWL_ERR(priv, "update beacon failed\n");
1098 mutex_lock(&priv->mutex);
1099 /* new beacon skb is allocated every time; dispose previous.*/
1100 if (priv->ibss_beacon)
1101 dev_kfree_skb(priv->ibss_beacon);
1103 priv->ibss_beacon = beacon;
1104 mutex_unlock(&priv->mutex);
1106 iwl3945_send_beacon_cmd(priv);
1109 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1110 struct iwl_rx_mem_buffer *rxb)
1112 #ifdef CONFIG_IWLWIFI_DEBUG
1113 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1114 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1115 u8 rate = beacon->beacon_notify_hdr.rate;
1117 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1118 "tsf %d %d rate %d\n",
1119 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1120 beacon->beacon_notify_hdr.failure_frame,
1121 le32_to_cpu(beacon->ibss_mgr_status),
1122 le32_to_cpu(beacon->high_tsf),
1123 le32_to_cpu(beacon->low_tsf), rate);
1126 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1127 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1128 queue_work(priv->workqueue, &priv->beacon_update);
1131 /* Handle notification from uCode that card's power state is changing
1132 * due to software, hardware, or critical temperature RFKILL */
1133 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1134 struct iwl_rx_mem_buffer *rxb)
1136 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1137 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1138 unsigned long status = priv->status;
1140 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1141 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1142 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1144 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1145 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1147 if (flags & HW_CARD_DISABLED)
1148 set_bit(STATUS_RF_KILL_HW, &priv->status);
1150 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1153 if (flags & SW_CARD_DISABLED)
1154 set_bit(STATUS_RF_KILL_SW, &priv->status);
1156 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1158 iwl_scan_cancel(priv);
1160 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1161 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1162 (test_bit(STATUS_RF_KILL_SW, &status) !=
1163 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1164 queue_work(priv->workqueue, &priv->rf_kill);
1166 wake_up_interruptible(&priv->wait_command_queue);
1170 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1172 * Setup the RX handlers for each of the reply types sent from the uCode
1175 * This function chains into the hardware specific files for them to setup
1176 * any hardware specific handlers as well.
1178 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1180 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1181 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1182 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1183 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1184 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1185 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1186 iwl_rx_pm_debug_statistics_notif;
1187 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1190 * The same handler is used for both the REPLY to a discrete
1191 * statistics request from the host as well as for the periodic
1192 * statistics notifications (after received beacons) from the uCode.
1194 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1195 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1197 iwl_setup_spectrum_handlers(priv);
1198 iwl_setup_rx_scan_handlers(priv);
1199 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1201 /* Set up hardware specific Rx handlers */
1202 iwl3945_hw_rx_handler_setup(priv);
1205 /************************** RX-FUNCTIONS ****************************/
1207 * Rx theory of operation
1209 * The host allocates 32 DMA target addresses and passes the host address
1210 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1214 * The host/firmware share two index registers for managing the Rx buffers.
1216 * The READ index maps to the first position that the firmware may be writing
1217 * to -- the driver can read up to (but not including) this position and get
1219 * The READ index is managed by the firmware once the card is enabled.
1221 * The WRITE index maps to the last position the driver has read from -- the
1222 * position preceding WRITE is the last slot the firmware can place a packet.
1224 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1227 * During initialization, the host sets up the READ queue position to the first
1228 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1230 * When the firmware places a packet in a buffer, it will advance the READ index
1231 * and fire the RX interrupt. The driver can then query the READ index and
1232 * process as many packets as possible, moving the WRITE index forward as it
1233 * resets the Rx queue buffers with new memory.
1235 * The management in the driver is as follows:
1236 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1237 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1238 * to replenish the iwl->rxq->rx_free.
1239 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1240 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1241 * 'processed' and 'read' driver indexes as well)
1242 * + A received packet is processed and handed to the kernel network stack,
1243 * detached from the iwl->rxq. The driver 'processed' index is updated.
1244 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1245 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1246 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1247 * were enough free buffers and RX_STALLED is set it is cleared.
1252 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1253 * iwl3945_rx_queue_restock
1254 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1255 * queue, updates firmware pointers, and updates
1256 * the WRITE index. If insufficient rx_free buffers
1257 * are available, schedules iwl3945_rx_replenish
1259 * -- enable interrupts --
1260 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1261 * READ INDEX, detaching the SKB from the pool.
1262 * Moves the packet buffer from queue to rx_used.
1263 * Calls iwl3945_rx_queue_restock to refill any empty
1270 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1272 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1273 dma_addr_t dma_addr)
1275 return cpu_to_le32((u32)dma_addr);
1279 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1281 * If there are slots in the RX queue that need to be restocked,
1282 * and we have free pre-allocated buffers, fill the ranks as much
1283 * as we can, pulling from rx_free.
1285 * This moves the 'write' index forward to catch up with 'processed', and
1286 * also updates the memory address in the firmware to reference the new
1289 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1291 struct iwl_rx_queue *rxq = &priv->rxq;
1292 struct list_head *element;
1293 struct iwl_rx_mem_buffer *rxb;
1294 unsigned long flags;
1297 spin_lock_irqsave(&rxq->lock, flags);
1298 write = rxq->write & ~0x7;
1299 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1300 /* Get next free Rx buffer, remove from free list */
1301 element = rxq->rx_free.next;
1302 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1305 /* Point to Rx buffer via next RBD in circular buffer */
1306 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1307 rxq->queue[rxq->write] = rxb;
1308 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1311 spin_unlock_irqrestore(&rxq->lock, flags);
1312 /* If the pre-allocated buffer pool is dropping low, schedule to
1314 if (rxq->free_count <= RX_LOW_WATERMARK)
1315 queue_work(priv->workqueue, &priv->rx_replenish);
1318 /* If we've added more space for the firmware to place data, tell it.
1319 * Increment device's write pointer in multiples of 8. */
1320 if ((write != (rxq->write & ~0x7))
1321 || (abs(rxq->write - rxq->read) > 7)) {
1322 spin_lock_irqsave(&rxq->lock, flags);
1323 rxq->need_update = 1;
1324 spin_unlock_irqrestore(&rxq->lock, flags);
1325 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1334 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1336 * When moving to rx_free an SKB is allocated for the slot.
1338 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1339 * This is called as a scheduled work item (except for during initialization)
1341 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1343 struct iwl_rx_queue *rxq = &priv->rxq;
1344 struct list_head *element;
1345 struct iwl_rx_mem_buffer *rxb;
1346 unsigned long flags;
1349 spin_lock_irqsave(&rxq->lock, flags);
1351 if (list_empty(&rxq->rx_used)) {
1352 spin_unlock_irqrestore(&rxq->lock, flags);
1356 element = rxq->rx_used.next;
1357 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1359 spin_unlock_irqrestore(&rxq->lock, flags);
1361 /* Alloc a new receive buffer */
1363 alloc_skb(priv->hw_params.rx_buf_size,
1366 if (net_ratelimit())
1367 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1368 /* We don't reschedule replenish work here -- we will
1369 * call the restock method and if it still needs
1370 * more buffers it will schedule replenish */
1374 /* If radiotap head is required, reserve some headroom here.
1375 * The physical head count is a variable rx_stats->phy_count.
1376 * We reserve 4 bytes here. Plus these extra bytes, the
1377 * headroom of the physical head should be enough for the
1378 * radiotap head that iwl3945 supported. See iwl3945_rt.
1380 skb_reserve(rxb->skb, 4);
1382 /* Get physical address of RB/SKB */
1383 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1385 priv->hw_params.rx_buf_size,
1386 PCI_DMA_FROMDEVICE);
1388 spin_lock_irqsave(&rxq->lock, flags);
1389 list_add_tail(&rxb->list, &rxq->rx_free);
1390 priv->alloc_rxb_skb++;
1392 spin_unlock_irqrestore(&rxq->lock, flags);
1396 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1398 unsigned long flags;
1400 spin_lock_irqsave(&rxq->lock, flags);
1401 INIT_LIST_HEAD(&rxq->rx_free);
1402 INIT_LIST_HEAD(&rxq->rx_used);
1403 /* Fill the rx_used queue with _all_ of the Rx buffers */
1404 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1405 /* In the reset function, these buffers may have been allocated
1406 * to an SKB, so we need to unmap and free potential storage */
1407 if (rxq->pool[i].skb != NULL) {
1408 pci_unmap_single(priv->pci_dev,
1409 rxq->pool[i].real_dma_addr,
1410 priv->hw_params.rx_buf_size,
1411 PCI_DMA_FROMDEVICE);
1412 priv->alloc_rxb_skb--;
1413 dev_kfree_skb(rxq->pool[i].skb);
1414 rxq->pool[i].skb = NULL;
1416 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1419 /* Set us so that we have processed and used all buffers, but have
1420 * not restocked the Rx queue with fresh buffers */
1421 rxq->read = rxq->write = 0;
1422 rxq->free_count = 0;
1423 spin_unlock_irqrestore(&rxq->lock, flags);
1426 void iwl3945_rx_replenish(void *data)
1428 struct iwl_priv *priv = data;
1429 unsigned long flags;
1431 iwl3945_rx_allocate(priv);
1433 spin_lock_irqsave(&priv->lock, flags);
1434 iwl3945_rx_queue_restock(priv);
1435 spin_unlock_irqrestore(&priv->lock, flags);
1438 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1439 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1440 * This free routine walks the list of POOL entries and if SKB is set to
1441 * non NULL it is unmapped and freed
1443 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1446 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1447 if (rxq->pool[i].skb != NULL) {
1448 pci_unmap_single(priv->pci_dev,
1449 rxq->pool[i].real_dma_addr,
1450 priv->hw_params.rx_buf_size,
1451 PCI_DMA_FROMDEVICE);
1452 dev_kfree_skb(rxq->pool[i].skb);
1456 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1458 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1459 rxq->rb_stts, rxq->rb_stts_dma);
1461 rxq->rb_stts = NULL;
1465 /* Convert linear signal-to-noise ratio into dB */
1466 static u8 ratio2dB[100] = {
1467 /* 0 1 2 3 4 5 6 7 8 9 */
1468 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1469 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1470 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1471 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1472 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1473 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1474 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1475 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1476 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1477 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1480 /* Calculates a relative dB value from a ratio of linear
1481 * (i.e. not dB) signal levels.
1482 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1483 int iwl3945_calc_db_from_ratio(int sig_ratio)
1485 /* 1000:1 or higher just report as 60 dB */
1486 if (sig_ratio >= 1000)
1489 /* 100:1 or higher, divide by 10 and use table,
1490 * add 20 dB to make up for divide by 10 */
1491 if (sig_ratio >= 100)
1492 return 20 + (int)ratio2dB[sig_ratio/10];
1494 /* We shouldn't see this */
1498 /* Use table for ratios 1:1 - 99:1 */
1499 return (int)ratio2dB[sig_ratio];
1502 #define PERFECT_RSSI (-20) /* dBm */
1503 #define WORST_RSSI (-95) /* dBm */
1504 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1506 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1507 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1508 * about formulas used below. */
1509 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1512 int degradation = PERFECT_RSSI - rssi_dbm;
1514 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1515 * as indicator; formula is (signal dbm - noise dbm).
1516 * SNR at or above 40 is a great signal (100%).
1517 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1518 * Weakest usable signal is usually 10 - 15 dB SNR. */
1520 if (rssi_dbm - noise_dbm >= 40)
1522 else if (rssi_dbm < noise_dbm)
1524 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1526 /* Else use just the signal level.
1527 * This formula is a least squares fit of data points collected and
1528 * compared with a reference system that had a percentage (%) display
1529 * for signal quality. */
1531 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1532 (15 * RSSI_RANGE + 62 * degradation)) /
1533 (RSSI_RANGE * RSSI_RANGE);
1537 else if (sig_qual < 1)
1544 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1546 * Uses the priv->rx_handlers callback function array to invoke
1547 * the appropriate handlers, including command responses,
1548 * frame-received notifications, and other notifications.
1550 static void iwl3945_rx_handle(struct iwl_priv *priv)
1552 struct iwl_rx_mem_buffer *rxb;
1553 struct iwl_rx_packet *pkt;
1554 struct iwl_rx_queue *rxq = &priv->rxq;
1557 unsigned long flags;
1561 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1562 * buffer that the driver may process (last buffer filled by ucode). */
1563 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1566 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1568 /* Rx interrupt, but nothing sent from uCode */
1570 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1573 rxb = rxq->queue[i];
1575 /* If an RXB doesn't have a Rx queue slot associated with it,
1576 * then a bug has been introduced in the queue refilling
1577 * routines -- catch it here */
1578 BUG_ON(rxb == NULL);
1580 rxq->queue[i] = NULL;
1582 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1583 priv->hw_params.rx_buf_size,
1584 PCI_DMA_FROMDEVICE);
1585 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1587 /* Reclaim a command buffer only if this packet is a response
1588 * to a (driver-originated) command.
1589 * If the packet (e.g. Rx frame) originated from uCode,
1590 * there is no command buffer to reclaim.
1591 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1592 * but apparently a few don't get set; catch them here. */
1593 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1594 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1595 (pkt->hdr.cmd != REPLY_TX);
1597 /* Based on type of command response or notification,
1598 * handle those that need handling via function in
1599 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1600 if (priv->rx_handlers[pkt->hdr.cmd]) {
1601 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1602 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1603 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1604 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1605 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1607 /* No handling needed */
1608 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1609 "r %d i %d No handler needed for %s, 0x%02x\n",
1610 r, i, get_cmd_string(pkt->hdr.cmd),
1615 /* Invoke any callbacks, transfer the skb to caller, and
1616 * fire off the (possibly) blocking iwl_send_cmd()
1617 * as we reclaim the driver command queue */
1618 if (rxb && rxb->skb)
1619 iwl_tx_cmd_complete(priv, rxb);
1621 IWL_WARN(priv, "Claim null rxb?\n");
1624 /* For now we just don't re-use anything. We can tweak this
1625 * later to try and re-use notification packets and SKBs that
1626 * fail to Rx correctly */
1627 if (rxb->skb != NULL) {
1628 priv->alloc_rxb_skb--;
1629 dev_kfree_skb_any(rxb->skb);
1633 spin_lock_irqsave(&rxq->lock, flags);
1634 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1635 spin_unlock_irqrestore(&rxq->lock, flags);
1636 i = (i + 1) & RX_QUEUE_MASK;
1637 /* If there are a lot of unused frames,
1638 * restock the Rx queue so ucode won't assert. */
1643 iwl3945_rx_queue_restock(priv);
1649 /* Backtrack one entry */
1651 iwl3945_rx_queue_restock(priv);
1654 /* call this function to flush any scheduled tasklet */
1655 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1657 /* wait to make sure we flush pending tasklet*/
1658 synchronize_irq(priv->pci_dev->irq);
1659 tasklet_kill(&priv->irq_tasklet);
1662 static const char *desc_lookup(int i)
1670 return "BAD_CHECKSUM";
1672 return "NMI_INTERRUPT";
1676 return "FATAL_ERROR";
1682 #define ERROR_START_OFFSET (1 * sizeof(u32))
1683 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1685 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1688 u32 desc, time, count, base, data1;
1689 u32 blink1, blink2, ilink1, ilink2;
1692 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1694 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1695 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1699 rc = iwl_grab_nic_access(priv);
1701 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1705 count = iwl_read_targ_mem(priv, base);
1707 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1708 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1709 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1710 priv->status, count);
1713 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1714 "ilink1 nmiPC Line\n");
1715 for (i = ERROR_START_OFFSET;
1716 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1717 i += ERROR_ELEM_SIZE) {
1718 desc = iwl_read_targ_mem(priv, base + i);
1720 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1722 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1724 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1726 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1728 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1730 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1733 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1734 desc_lookup(desc), desc, time, blink1, blink2,
1735 ilink1, ilink2, data1);
1738 iwl_release_nic_access(priv);
1742 #define EVENT_START_OFFSET (6 * sizeof(u32))
1745 * iwl3945_print_event_log - Dump error event log to syslog
1747 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1749 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1750 u32 num_events, u32 mode)
1753 u32 base; /* SRAM byte address of event log header */
1754 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1755 u32 ptr; /* SRAM byte address of log data */
1756 u32 ev, time, data; /* event log data */
1758 if (num_events == 0)
1761 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1764 event_size = 2 * sizeof(u32);
1766 event_size = 3 * sizeof(u32);
1768 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1770 /* "time" is actually "data" for mode 0 (no timestamp).
1771 * place event id # at far right for easier visual parsing. */
1772 for (i = 0; i < num_events; i++) {
1773 ev = iwl_read_targ_mem(priv, ptr);
1775 time = iwl_read_targ_mem(priv, ptr);
1779 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1781 data = iwl_read_targ_mem(priv, ptr);
1783 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1788 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1791 u32 base; /* SRAM byte address of event log header */
1792 u32 capacity; /* event log capacity in # entries */
1793 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1794 u32 num_wraps; /* # times uCode wrapped to top of log */
1795 u32 next_entry; /* index of next entry to be written by uCode */
1796 u32 size; /* # entries that we'll print */
1798 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1799 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1800 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1804 rc = iwl_grab_nic_access(priv);
1806 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1810 /* event log header */
1811 capacity = iwl_read_targ_mem(priv, base);
1812 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1813 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1814 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1816 size = num_wraps ? capacity : next_entry;
1818 /* bail out if nothing in log */
1820 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1821 iwl_release_nic_access(priv);
1825 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1828 /* if uCode has wrapped back to top of log, start at the oldest entry,
1829 * i.e the next one that uCode would fill. */
1831 iwl3945_print_event_log(priv, next_entry,
1832 capacity - next_entry, mode);
1834 /* (then/else) start at top of log */
1835 iwl3945_print_event_log(priv, 0, next_entry, mode);
1837 iwl_release_nic_access(priv);
1840 static void iwl3945_error_recovery(struct iwl_priv *priv)
1842 unsigned long flags;
1844 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1845 sizeof(priv->staging_rxon));
1846 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1847 iwlcore_commit_rxon(priv);
1849 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 1, 0, NULL);
1851 spin_lock_irqsave(&priv->lock, flags);
1852 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1853 priv->error_recovering = 0;
1854 spin_unlock_irqrestore(&priv->lock, flags);
1857 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1859 u32 inta, handled = 0;
1861 unsigned long flags;
1862 #ifdef CONFIG_IWLWIFI_DEBUG
1866 spin_lock_irqsave(&priv->lock, flags);
1868 /* Ack/clear/reset pending uCode interrupts.
1869 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1870 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1871 inta = iwl_read32(priv, CSR_INT);
1872 iwl_write32(priv, CSR_INT, inta);
1874 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1875 * Any new interrupts that happen after this, either while we're
1876 * in this tasklet, or later, will show up in next ISR/tasklet. */
1877 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1878 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1880 #ifdef CONFIG_IWLWIFI_DEBUG
1881 if (priv->debug_level & IWL_DL_ISR) {
1882 /* just for debug */
1883 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1884 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1885 inta, inta_mask, inta_fh);
1889 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1890 * atomic, make sure that inta covers all the interrupts that
1891 * we've discovered, even if FH interrupt came in just after
1892 * reading CSR_INT. */
1893 if (inta_fh & CSR39_FH_INT_RX_MASK)
1894 inta |= CSR_INT_BIT_FH_RX;
1895 if (inta_fh & CSR39_FH_INT_TX_MASK)
1896 inta |= CSR_INT_BIT_FH_TX;
1898 /* Now service all interrupt bits discovered above. */
1899 if (inta & CSR_INT_BIT_HW_ERR) {
1900 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1902 /* Tell the device to stop sending interrupts */
1903 iwl_disable_interrupts(priv);
1905 priv->isr_stats.hw++;
1906 iwl_irq_handle_error(priv);
1908 handled |= CSR_INT_BIT_HW_ERR;
1910 spin_unlock_irqrestore(&priv->lock, flags);
1915 #ifdef CONFIG_IWLWIFI_DEBUG
1916 if (priv->debug_level & (IWL_DL_ISR)) {
1917 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1918 if (inta & CSR_INT_BIT_SCD) {
1919 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1920 "the frame/frames.\n");
1921 priv->isr_stats.sch++;
1924 /* Alive notification via Rx interrupt will do the real work */
1925 if (inta & CSR_INT_BIT_ALIVE) {
1926 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1927 priv->isr_stats.alive++;
1931 /* Safely ignore these bits for debug checks below */
1932 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1934 /* Error detected by uCode */
1935 if (inta & CSR_INT_BIT_SW_ERR) {
1936 IWL_ERR(priv, "Microcode SW error detected. "
1937 "Restarting 0x%X.\n", inta);
1938 priv->isr_stats.sw++;
1939 priv->isr_stats.sw_err = inta;
1940 iwl_irq_handle_error(priv);
1941 handled |= CSR_INT_BIT_SW_ERR;
1944 /* uCode wakes up after power-down sleep */
1945 if (inta & CSR_INT_BIT_WAKEUP) {
1946 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1947 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1948 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1949 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1950 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1951 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1952 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1953 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1955 priv->isr_stats.wakeup++;
1956 handled |= CSR_INT_BIT_WAKEUP;
1959 /* All uCode command responses, including Tx command responses,
1960 * Rx "responses" (frame-received notification), and other
1961 * notifications from uCode come through here*/
1962 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1963 iwl3945_rx_handle(priv);
1964 priv->isr_stats.rx++;
1965 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1968 if (inta & CSR_INT_BIT_FH_TX) {
1969 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1970 priv->isr_stats.tx++;
1972 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1973 if (!iwl_grab_nic_access(priv)) {
1974 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1975 (FH39_SRVC_CHNL), 0x0);
1976 iwl_release_nic_access(priv);
1978 handled |= CSR_INT_BIT_FH_TX;
1981 if (inta & ~handled) {
1982 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1983 priv->isr_stats.unhandled++;
1986 if (inta & ~CSR_INI_SET_MASK) {
1987 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1988 inta & ~CSR_INI_SET_MASK);
1989 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1992 /* Re-enable all interrupts */
1993 /* only Re-enable if disabled by irq */
1994 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1995 iwl_enable_interrupts(priv);
1997 #ifdef CONFIG_IWLWIFI_DEBUG
1998 if (priv->debug_level & (IWL_DL_ISR)) {
1999 inta = iwl_read32(priv, CSR_INT);
2000 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2001 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2002 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2003 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2006 spin_unlock_irqrestore(&priv->lock, flags);
2009 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2010 enum ieee80211_band band,
2011 u8 is_active, u8 n_probes,
2012 struct iwl3945_scan_channel *scan_ch)
2014 const struct ieee80211_channel *channels = NULL;
2015 const struct ieee80211_supported_band *sband;
2016 const struct iwl_channel_info *ch_info;
2017 u16 passive_dwell = 0;
2018 u16 active_dwell = 0;
2021 sband = iwl_get_hw_mode(priv, band);
2025 channels = sband->channels;
2027 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2028 passive_dwell = iwl_get_passive_dwell_time(priv, band);
2030 if (passive_dwell <= active_dwell)
2031 passive_dwell = active_dwell + 1;
2033 for (i = 0, added = 0; i < sband->n_channels; i++) {
2034 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2037 scan_ch->channel = channels[i].hw_value;
2039 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2040 if (!is_channel_valid(ch_info)) {
2041 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2046 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2047 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2048 /* If passive , set up for auto-switch
2049 * and use long active_dwell time.
2051 if (!is_active || is_channel_passive(ch_info) ||
2052 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2053 scan_ch->type = 0; /* passive */
2054 if (IWL_UCODE_API(priv->ucode_ver) == 1)
2055 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2057 scan_ch->type = 1; /* active */
2060 /* Set direct probe bits. These may be used both for active
2061 * scan channels (probes gets sent right away),
2062 * or for passive channels (probes get se sent only after
2063 * hearing clear Rx packet).*/
2064 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2066 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2068 /* uCode v1 does not allow setting direct probe bits on
2069 * passive channel. */
2070 if ((scan_ch->type & 1) && n_probes)
2071 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2074 /* Set txpower levels to defaults */
2075 scan_ch->tpc.dsp_atten = 110;
2076 /* scan_pwr_info->tpc.dsp_atten; */
2078 /*scan_pwr_info->tpc.tx_gain; */
2079 if (band == IEEE80211_BAND_5GHZ)
2080 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2082 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2083 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2085 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2089 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2091 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2092 (scan_ch->type & 1) ?
2093 active_dwell : passive_dwell);
2099 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2103 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2104 struct ieee80211_rate *rates)
2108 for (i = 0; i < IWL_RATE_COUNT; i++) {
2109 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2110 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2111 rates[i].hw_value_short = i;
2113 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2115 * If CCK != 1M then set short preamble rate flag.
2117 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2118 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2123 /******************************************************************************
2125 * uCode download functions
2127 ******************************************************************************/
2129 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2131 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2132 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2133 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2134 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2135 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2136 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2140 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2141 * looking at all data.
2143 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2150 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2152 rc = iwl_grab_nic_access(priv);
2156 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2157 IWL39_RTC_INST_LOWER_BOUND);
2160 for (; len > 0; len -= sizeof(u32), image++) {
2161 /* read data comes through single port, auto-incr addr */
2162 /* NOTE: Use the debugless read so we don't flood kernel log
2163 * if IWL_DL_IO is set */
2164 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2165 if (val != le32_to_cpu(*image)) {
2166 IWL_ERR(priv, "uCode INST section is invalid at "
2167 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2168 save_len - len, val, le32_to_cpu(*image));
2176 iwl_release_nic_access(priv);
2179 IWL_DEBUG_INFO(priv,
2180 "ucode image in INSTRUCTION memory is good\n");
2187 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2188 * using sample data 100 bytes apart. If these sample points are good,
2189 * it's a pretty good bet that everything between them is good, too.
2191 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2198 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2200 rc = iwl_grab_nic_access(priv);
2204 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2205 /* read data comes through single port, auto-incr addr */
2206 /* NOTE: Use the debugless read so we don't flood kernel log
2207 * if IWL_DL_IO is set */
2208 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2209 i + IWL39_RTC_INST_LOWER_BOUND);
2210 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2211 if (val != le32_to_cpu(*image)) {
2212 #if 0 /* Enable this if you want to see details */
2213 IWL_ERR(priv, "uCode INST section is invalid at "
2214 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2224 iwl_release_nic_access(priv);
2231 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2232 * and verify its contents
2234 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2241 image = (__le32 *)priv->ucode_boot.v_addr;
2242 len = priv->ucode_boot.len;
2243 rc = iwl3945_verify_inst_sparse(priv, image, len);
2245 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2249 /* Try initialize */
2250 image = (__le32 *)priv->ucode_init.v_addr;
2251 len = priv->ucode_init.len;
2252 rc = iwl3945_verify_inst_sparse(priv, image, len);
2254 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2258 /* Try runtime/protocol */
2259 image = (__le32 *)priv->ucode_code.v_addr;
2260 len = priv->ucode_code.len;
2261 rc = iwl3945_verify_inst_sparse(priv, image, len);
2263 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2267 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2269 /* Since nothing seems to match, show first several data entries in
2270 * instruction SRAM, so maybe visual inspection will give a clue.
2271 * Selection of bootstrap image (vs. other images) is arbitrary. */
2272 image = (__le32 *)priv->ucode_boot.v_addr;
2273 len = priv->ucode_boot.len;
2274 rc = iwl3945_verify_inst_full(priv, image, len);
2279 static void iwl3945_nic_start(struct iwl_priv *priv)
2281 /* Remove all resets to allow NIC to operate */
2282 iwl_write32(priv, CSR_RESET, 0);
2286 * iwl3945_read_ucode - Read uCode images from disk file.
2288 * Copy into buffers for card to fetch via bus-mastering
2290 static int iwl3945_read_ucode(struct iwl_priv *priv)
2292 struct iwl_ucode *ucode;
2293 int ret = -EINVAL, index;
2294 const struct firmware *ucode_raw;
2295 /* firmware file name contains uCode/driver compatibility version */
2296 const char *name_pre = priv->cfg->fw_name_pre;
2297 const unsigned int api_max = priv->cfg->ucode_api_max;
2298 const unsigned int api_min = priv->cfg->ucode_api_min;
2302 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2304 /* Ask kernel firmware_class module to get the boot firmware off disk.
2305 * request_firmware() is synchronous, file is in memory on return. */
2306 for (index = api_max; index >= api_min; index--) {
2307 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2308 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2310 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2317 if (index < api_max)
2318 IWL_ERR(priv, "Loaded firmware %s, "
2319 "which is deprecated. "
2320 " Please use API v%u instead.\n",
2322 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2323 "(%zd bytes) from disk\n",
2324 buf, ucode_raw->size);
2332 /* Make sure that we got at least our header! */
2333 if (ucode_raw->size < sizeof(*ucode)) {
2334 IWL_ERR(priv, "File size way too small!\n");
2339 /* Data from ucode file: header followed by uCode images */
2340 ucode = (void *)ucode_raw->data;
2342 priv->ucode_ver = le32_to_cpu(ucode->ver);
2343 api_ver = IWL_UCODE_API(priv->ucode_ver);
2344 inst_size = le32_to_cpu(ucode->inst_size);
2345 data_size = le32_to_cpu(ucode->data_size);
2346 init_size = le32_to_cpu(ucode->init_size);
2347 init_data_size = le32_to_cpu(ucode->init_data_size);
2348 boot_size = le32_to_cpu(ucode->boot_size);
2350 /* api_ver should match the api version forming part of the
2351 * firmware filename ... but we don't check for that and only rely
2352 * on the API version read from firmware header from here on forward */
2354 if (api_ver < api_min || api_ver > api_max) {
2355 IWL_ERR(priv, "Driver unable to support your firmware API. "
2356 "Driver supports v%u, firmware is v%u.\n",
2358 priv->ucode_ver = 0;
2362 if (api_ver != api_max)
2363 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2364 "got %u. New firmware can be obtained "
2365 "from http://www.intellinuxwireless.org.\n",
2368 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2369 IWL_UCODE_MAJOR(priv->ucode_ver),
2370 IWL_UCODE_MINOR(priv->ucode_ver),
2371 IWL_UCODE_API(priv->ucode_ver),
2372 IWL_UCODE_SERIAL(priv->ucode_ver));
2374 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2376 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2378 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2380 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2382 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2384 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2388 /* Verify size of file vs. image size info in file's header */
2389 if (ucode_raw->size < sizeof(*ucode) +
2390 inst_size + data_size + init_size +
2391 init_data_size + boot_size) {
2393 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2399 /* Verify that uCode images will fit in card's SRAM */
2400 if (inst_size > IWL39_MAX_INST_SIZE) {
2401 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2407 if (data_size > IWL39_MAX_DATA_SIZE) {
2408 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2413 if (init_size > IWL39_MAX_INST_SIZE) {
2414 IWL_DEBUG_INFO(priv,
2415 "uCode init instr len %d too large to fit in\n",
2420 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2421 IWL_DEBUG_INFO(priv,
2422 "uCode init data len %d too large to fit in\n",
2427 if (boot_size > IWL39_MAX_BSM_SIZE) {
2428 IWL_DEBUG_INFO(priv,
2429 "uCode boot instr len %d too large to fit in\n",
2435 /* Allocate ucode buffers for card's bus-master loading ... */
2437 /* Runtime instructions and 2 copies of data:
2438 * 1) unmodified from disk
2439 * 2) backup cache for save/restore during power-downs */
2440 priv->ucode_code.len = inst_size;
2441 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2443 priv->ucode_data.len = data_size;
2444 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2446 priv->ucode_data_backup.len = data_size;
2447 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2449 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2450 !priv->ucode_data_backup.v_addr)
2453 /* Initialization instructions and data */
2454 if (init_size && init_data_size) {
2455 priv->ucode_init.len = init_size;
2456 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2458 priv->ucode_init_data.len = init_data_size;
2459 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2461 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2465 /* Bootstrap (instructions only, no data) */
2467 priv->ucode_boot.len = boot_size;
2468 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2470 if (!priv->ucode_boot.v_addr)
2474 /* Copy images into buffers for card's bus-master reads ... */
2476 /* Runtime instructions (first block of data in file) */
2477 src = &ucode->data[0];
2478 len = priv->ucode_code.len;
2479 IWL_DEBUG_INFO(priv,
2480 "Copying (but not loading) uCode instr len %zd\n", len);
2481 memcpy(priv->ucode_code.v_addr, src, len);
2482 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2483 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2485 /* Runtime data (2nd block)
2486 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2487 src = &ucode->data[inst_size];
2488 len = priv->ucode_data.len;
2489 IWL_DEBUG_INFO(priv,
2490 "Copying (but not loading) uCode data len %zd\n", len);
2491 memcpy(priv->ucode_data.v_addr, src, len);
2492 memcpy(priv->ucode_data_backup.v_addr, src, len);
2494 /* Initialization instructions (3rd block) */
2496 src = &ucode->data[inst_size + data_size];
2497 len = priv->ucode_init.len;
2498 IWL_DEBUG_INFO(priv,
2499 "Copying (but not loading) init instr len %zd\n", len);
2500 memcpy(priv->ucode_init.v_addr, src, len);
2503 /* Initialization data (4th block) */
2504 if (init_data_size) {
2505 src = &ucode->data[inst_size + data_size + init_size];
2506 len = priv->ucode_init_data.len;
2507 IWL_DEBUG_INFO(priv,
2508 "Copying (but not loading) init data len %zd\n", len);
2509 memcpy(priv->ucode_init_data.v_addr, src, len);
2512 /* Bootstrap instructions (5th block) */
2513 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2514 len = priv->ucode_boot.len;
2515 IWL_DEBUG_INFO(priv,
2516 "Copying (but not loading) boot instr len %zd\n", len);
2517 memcpy(priv->ucode_boot.v_addr, src, len);
2519 /* We have our copies now, allow OS release its copies */
2520 release_firmware(ucode_raw);
2524 IWL_ERR(priv, "failed to allocate pci memory\n");
2526 iwl3945_dealloc_ucode_pci(priv);
2529 release_firmware(ucode_raw);
2537 * iwl3945_set_ucode_ptrs - Set uCode address location
2539 * Tell initialization uCode where to find runtime uCode.
2541 * BSM registers initially contain pointers to initialization uCode.
2542 * We need to replace them to load runtime uCode inst and data,
2543 * and to save runtime data when powering down.
2545 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2550 unsigned long flags;
2552 /* bits 31:0 for 3945 */
2553 pinst = priv->ucode_code.p_addr;
2554 pdata = priv->ucode_data_backup.p_addr;
2556 spin_lock_irqsave(&priv->lock, flags);
2557 rc = iwl_grab_nic_access(priv);
2559 spin_unlock_irqrestore(&priv->lock, flags);
2563 /* Tell bootstrap uCode where to find image to load */
2564 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2565 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2566 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2567 priv->ucode_data.len);
2569 /* Inst byte count must be last to set up, bit 31 signals uCode
2570 * that all new ptr/size info is in place */
2571 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2572 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2574 iwl_release_nic_access(priv);
2576 spin_unlock_irqrestore(&priv->lock, flags);
2578 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2584 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2586 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2588 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2590 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2592 /* Check alive response for "valid" sign from uCode */
2593 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2594 /* We had an error bringing up the hardware, so take it
2595 * all the way back down so we can try again */
2596 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2600 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2601 * This is a paranoid check, because we would not have gotten the
2602 * "initialize" alive if code weren't properly loaded. */
2603 if (iwl3945_verify_ucode(priv)) {
2604 /* Runtime instruction load was bad;
2605 * take it all the way back down so we can try again */
2606 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2610 /* Send pointers to protocol/runtime uCode image ... init code will
2611 * load and launch runtime uCode, which will send us another "Alive"
2613 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2614 if (iwl3945_set_ucode_ptrs(priv)) {
2615 /* Runtime instruction load won't happen;
2616 * take it all the way back down so we can try again */
2617 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2623 queue_work(priv->workqueue, &priv->restart);
2627 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2628 * from protocol/runtime uCode (initialization uCode's
2629 * Alive gets handled by iwl3945_init_alive_start()).
2631 static void iwl3945_alive_start(struct iwl_priv *priv)
2634 int thermal_spin = 0;
2637 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2639 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2640 /* We had an error bringing up the hardware, so take it
2641 * all the way back down so we can try again */
2642 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2646 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2647 * This is a paranoid check, because we would not have gotten the
2648 * "runtime" alive if code weren't properly loaded. */
2649 if (iwl3945_verify_ucode(priv)) {
2650 /* Runtime instruction load was bad;
2651 * take it all the way back down so we can try again */
2652 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2656 priv->cfg->ops->smgmt->clear_station_table(priv);
2658 rc = iwl_grab_nic_access(priv);
2660 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2664 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2665 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2666 iwl_release_nic_access(priv);
2669 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2670 /* if RFKILL is not on, then wait for thermal
2671 * sensor in adapter to kick in */
2672 while (iwl3945_hw_get_temperature(priv) == 0) {
2678 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2681 set_bit(STATUS_RF_KILL_HW, &priv->status);
2683 /* After the ALIVE response, we can send commands to 3945 uCode */
2684 set_bit(STATUS_ALIVE, &priv->status);
2686 /* Clear out the uCode error bit if it is set */
2687 clear_bit(STATUS_FW_ERROR, &priv->status);
2689 if (iwl_is_rfkill(priv))
2692 ieee80211_wake_queues(priv->hw);
2694 priv->active_rate = priv->rates_mask;
2695 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2697 iwl_power_update_mode(priv, false);
2699 if (iwl_is_associated(priv)) {
2700 struct iwl3945_rxon_cmd *active_rxon =
2701 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2703 memcpy(&priv->staging_rxon, &priv->active_rxon,
2704 sizeof(priv->staging_rxon));
2705 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2707 /* Initialize our rx_config data */
2708 iwl_connection_init_rx_config(priv, priv->iw_mode);
2711 /* Configure Bluetooth device coexistence support */
2712 iwl_send_bt_config(priv);
2714 /* Configure the adapter for unassociated operation */
2715 iwlcore_commit_rxon(priv);
2717 iwl3945_reg_txpower_periodic(priv);
2719 iwl3945_led_register(priv);
2721 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2722 set_bit(STATUS_READY, &priv->status);
2723 wake_up_interruptible(&priv->wait_command_queue);
2725 if (priv->error_recovering)
2726 iwl3945_error_recovery(priv);
2728 /* reassociate for ADHOC mode */
2729 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2730 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2733 iwl_mac_beacon_update(priv->hw, beacon);
2736 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2737 iwl_set_mode(priv, priv->iw_mode);
2742 queue_work(priv->workqueue, &priv->restart);
2745 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2747 static void __iwl3945_down(struct iwl_priv *priv)
2749 unsigned long flags;
2750 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2751 struct ieee80211_conf *conf = NULL;
2753 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2755 conf = ieee80211_get_hw_conf(priv->hw);
2758 set_bit(STATUS_EXIT_PENDING, &priv->status);
2760 iwl3945_led_unregister(priv);
2761 priv->cfg->ops->smgmt->clear_station_table(priv);
2763 /* Unblock any waiting calls */
2764 wake_up_interruptible_all(&priv->wait_command_queue);
2766 /* Wipe out the EXIT_PENDING status bit if we are not actually
2767 * exiting the module */
2769 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2771 /* stop and reset the on-board processor */
2772 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2774 /* tell the device to stop sending interrupts */
2775 spin_lock_irqsave(&priv->lock, flags);
2776 iwl_disable_interrupts(priv);
2777 spin_unlock_irqrestore(&priv->lock, flags);
2778 iwl_synchronize_irq(priv);
2780 if (priv->mac80211_registered)
2781 ieee80211_stop_queues(priv->hw);
2783 /* If we have not previously called iwl3945_init() then
2784 * clear all bits but the RF Kill bits and return */
2785 if (!iwl_is_init(priv)) {
2786 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2788 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2790 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2791 STATUS_GEO_CONFIGURED |
2792 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2793 STATUS_EXIT_PENDING;
2797 /* ...otherwise clear out all the status bits but the RF Kill
2798 * bits and continue taking the NIC down. */
2799 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2801 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2803 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2804 STATUS_GEO_CONFIGURED |
2805 test_bit(STATUS_FW_ERROR, &priv->status) <<
2807 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2808 STATUS_EXIT_PENDING;
2810 priv->cfg->ops->lib->apm_ops.reset(priv);
2811 spin_lock_irqsave(&priv->lock, flags);
2812 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2813 spin_unlock_irqrestore(&priv->lock, flags);
2815 iwl3945_hw_txq_ctx_stop(priv);
2816 iwl3945_hw_rxq_stop(priv);
2818 spin_lock_irqsave(&priv->lock, flags);
2819 if (!iwl_grab_nic_access(priv)) {
2820 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2821 APMG_CLK_VAL_DMA_CLK_RQT);
2822 iwl_release_nic_access(priv);
2824 spin_unlock_irqrestore(&priv->lock, flags);
2829 priv->cfg->ops->lib->apm_ops.stop(priv);
2831 priv->cfg->ops->lib->apm_ops.reset(priv);
2834 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2836 if (priv->ibss_beacon)
2837 dev_kfree_skb(priv->ibss_beacon);
2838 priv->ibss_beacon = NULL;
2840 /* clear out any free frames */
2841 iwl3945_clear_free_frames(priv);
2844 static void iwl3945_down(struct iwl_priv *priv)
2846 mutex_lock(&priv->mutex);
2847 __iwl3945_down(priv);
2848 mutex_unlock(&priv->mutex);
2850 iwl3945_cancel_deferred_work(priv);
2853 #define MAX_HW_RESTARTS 5
2855 static int __iwl3945_up(struct iwl_priv *priv)
2859 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2860 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2864 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2865 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2870 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2871 IWL_ERR(priv, "ucode not available for device bring up\n");
2875 /* If platform's RF_KILL switch is NOT set to KILL */
2876 if (iwl_read32(priv, CSR_GP_CNTRL) &
2877 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2878 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2880 set_bit(STATUS_RF_KILL_HW, &priv->status);
2881 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2885 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2887 rc = iwl3945_hw_nic_init(priv);
2889 IWL_ERR(priv, "Unable to int nic\n");
2893 /* make sure rfkill handshake bits are cleared */
2894 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2895 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2896 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2898 /* clear (again), then enable host interrupts */
2899 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2900 iwl_enable_interrupts(priv);
2902 /* really make sure rfkill handshake bits are cleared */
2903 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2904 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2906 /* Copy original ucode data image from disk into backup cache.
2907 * This will be used to initialize the on-board processor's
2908 * data SRAM for a clean start when the runtime program first loads. */
2909 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2910 priv->ucode_data.len);
2912 /* We return success when we resume from suspend and rf_kill is on. */
2913 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2916 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2918 priv->cfg->ops->smgmt->clear_station_table(priv);
2920 /* load bootstrap state machine,
2921 * load bootstrap program into processor's memory,
2922 * prepare to load the "initialize" uCode */
2923 priv->cfg->ops->lib->load_ucode(priv);
2927 "Unable to set up bootstrap uCode: %d\n", rc);
2931 /* start card; "initialize" will load runtime ucode */
2932 iwl3945_nic_start(priv);
2934 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2939 set_bit(STATUS_EXIT_PENDING, &priv->status);
2940 __iwl3945_down(priv);
2941 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2943 /* tried to restart and config the device for as long as our
2944 * patience could withstand */
2945 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2950 /*****************************************************************************
2952 * Workqueue callbacks
2954 *****************************************************************************/
2956 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2958 struct iwl_priv *priv =
2959 container_of(data, struct iwl_priv, init_alive_start.work);
2961 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2964 mutex_lock(&priv->mutex);
2965 iwl3945_init_alive_start(priv);
2966 mutex_unlock(&priv->mutex);
2969 static void iwl3945_bg_alive_start(struct work_struct *data)
2971 struct iwl_priv *priv =
2972 container_of(data, struct iwl_priv, alive_start.work);
2974 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2977 mutex_lock(&priv->mutex);
2978 iwl3945_alive_start(priv);
2979 mutex_unlock(&priv->mutex);
2982 static void iwl3945_rfkill_poll(struct work_struct *data)
2984 struct iwl_priv *priv =
2985 container_of(data, struct iwl_priv, rfkill_poll.work);
2986 unsigned long status = priv->status;
2988 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2989 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2991 set_bit(STATUS_RF_KILL_HW, &priv->status);
2993 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2994 queue_work(priv->workqueue, &priv->rf_kill);
2996 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2997 round_jiffies_relative(2 * HZ));
3001 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3002 static void iwl3945_bg_request_scan(struct work_struct *data)
3004 struct iwl_priv *priv =
3005 container_of(data, struct iwl_priv, request_scan);
3006 struct iwl_host_cmd cmd = {
3007 .id = REPLY_SCAN_CMD,
3008 .len = sizeof(struct iwl3945_scan_cmd),
3009 .meta.flags = CMD_SIZE_HUGE,
3012 struct iwl3945_scan_cmd *scan;
3013 struct ieee80211_conf *conf = NULL;
3015 enum ieee80211_band band;
3016 bool is_active = false;
3018 conf = ieee80211_get_hw_conf(priv->hw);
3020 mutex_lock(&priv->mutex);
3022 if (!iwl_is_ready(priv)) {
3023 IWL_WARN(priv, "request scan called when driver not ready.\n");
3027 /* Make sure the scan wasn't canceled before this queued work
3028 * was given the chance to run... */
3029 if (!test_bit(STATUS_SCANNING, &priv->status))
3032 /* This should never be called or scheduled if there is currently
3033 * a scan active in the hardware. */
3034 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3035 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
3036 "Ignoring second request.\n");
3041 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3042 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3046 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3048 "Scan request while abort pending. Queuing.\n");
3052 if (iwl_is_rfkill(priv)) {
3053 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3057 if (!test_bit(STATUS_READY, &priv->status)) {
3059 "Scan request while uninitialized. Queuing.\n");
3063 if (!priv->scan_bands) {
3064 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3069 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3070 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3077 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3079 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3080 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3082 if (iwl_is_associated(priv)) {
3085 u32 suspend_time = 100;
3086 u32 scan_suspend_time = 100;
3087 unsigned long flags;
3089 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3091 spin_lock_irqsave(&priv->lock, flags);
3092 interval = priv->beacon_int;
3093 spin_unlock_irqrestore(&priv->lock, flags);
3095 scan->suspend_time = 0;
3096 scan->max_out_time = cpu_to_le32(200 * 1024);
3098 interval = suspend_time;
3100 * suspend time format:
3101 * 0-19: beacon interval in usec (time before exec.)
3103 * 24-31: number of beacons (suspend between channels)
3106 extra = (suspend_time / interval) << 24;
3107 scan_suspend_time = 0xFF0FFFFF &
3108 (extra | ((suspend_time % interval) * 1024));
3110 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3111 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3112 scan_suspend_time, interval);
3115 if (priv->scan_request->n_ssids) {
3117 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
3118 for (i = 0; i < priv->scan_request->n_ssids; i++) {
3119 /* always does wildcard anyway */
3120 if (!priv->scan_request->ssids[i].ssid_len)
3122 scan->direct_scan[p].id = WLAN_EID_SSID;
3123 scan->direct_scan[p].len =
3124 priv->scan_request->ssids[i].ssid_len;
3125 memcpy(scan->direct_scan[p].ssid,
3126 priv->scan_request->ssids[i].ssid,
3127 priv->scan_request->ssids[i].ssid_len);
3133 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
3135 /* We don't build a direct scan probe request; the uCode will do
3136 * that based on the direct_mask added to each channel entry */
3137 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3138 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3139 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3141 /* flags + rate selection */
3143 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3144 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3145 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3146 scan->good_CRC_th = 0;
3147 band = IEEE80211_BAND_2GHZ;
3148 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3149 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3151 * If active scaning is requested but a certain channel
3152 * is marked passive, we can do active scanning if we
3153 * detect transmissions.
3155 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
3156 band = IEEE80211_BAND_5GHZ;
3158 IWL_WARN(priv, "Invalid scan band count\n");
3162 scan->tx_cmd.len = cpu_to_le16(
3163 iwl_fill_probe_req(priv,
3164 (struct ieee80211_mgmt *)scan->data,
3165 priv->scan_request->ie,
3166 priv->scan_request->ie_len,
3167 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3169 /* select Rx antennas */
3170 scan->flags |= iwl3945_get_antenna_flags(priv);
3172 if (iwl_is_monitor_mode(priv))
3173 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3175 scan->channel_count =
3176 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3177 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3179 if (scan->channel_count == 0) {
3180 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3184 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3185 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3187 scan->len = cpu_to_le16(cmd.len);
3189 set_bit(STATUS_SCAN_HW, &priv->status);
3190 rc = iwl_send_cmd_sync(priv, &cmd);
3194 queue_delayed_work(priv->workqueue, &priv->scan_check,
3195 IWL_SCAN_CHECK_WATCHDOG);
3197 mutex_unlock(&priv->mutex);
3201 /* can not perform scan make sure we clear scanning
3202 * bits from status so next scan request can be performed.
3203 * if we dont clear scanning status bit here all next scan
3206 clear_bit(STATUS_SCAN_HW, &priv->status);
3207 clear_bit(STATUS_SCANNING, &priv->status);
3209 /* inform mac80211 scan aborted */
3210 queue_work(priv->workqueue, &priv->scan_completed);
3211 mutex_unlock(&priv->mutex);
3214 static void iwl3945_bg_up(struct work_struct *data)
3216 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3218 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3221 mutex_lock(&priv->mutex);
3223 mutex_unlock(&priv->mutex);
3224 iwl_rfkill_set_hw_state(priv);
3227 static void iwl3945_bg_restart(struct work_struct *data)
3229 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3231 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3235 queue_work(priv->workqueue, &priv->up);
3238 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3240 struct iwl_priv *priv =
3241 container_of(data, struct iwl_priv, rx_replenish);
3243 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3246 mutex_lock(&priv->mutex);
3247 iwl3945_rx_replenish(priv);
3248 mutex_unlock(&priv->mutex);
3251 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3253 void iwl3945_post_associate(struct iwl_priv *priv)
3256 struct ieee80211_conf *conf = NULL;
3258 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3259 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3264 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3265 priv->assoc_id, priv->active_rxon.bssid_addr);
3267 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3270 if (!priv->vif || !priv->is_open)
3273 iwl_scan_cancel_timeout(priv, 200);
3275 conf = ieee80211_get_hw_conf(priv->hw);
3277 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3278 iwlcore_commit_rxon(priv);
3280 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3281 iwl3945_setup_rxon_timing(priv);
3282 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3283 sizeof(priv->rxon_timing), &priv->rxon_timing);
3285 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3286 "Attempting to continue.\n");
3288 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3290 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3292 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3293 priv->assoc_id, priv->beacon_int);
3295 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3296 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3298 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3300 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3301 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3302 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3304 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3306 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3307 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3311 iwlcore_commit_rxon(priv);
3313 switch (priv->iw_mode) {
3314 case NL80211_IFTYPE_STATION:
3315 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3318 case NL80211_IFTYPE_ADHOC:
3321 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3322 iwl3945_sync_sta(priv, IWL_STA_ID,
3323 (priv->band == IEEE80211_BAND_5GHZ) ?
3324 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3326 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3327 iwl3945_send_beacon_cmd(priv);
3332 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3333 __func__, priv->iw_mode);
3337 iwl_activate_qos(priv, 0);
3339 /* we have just associated, don't start scan too early */
3340 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3343 /*****************************************************************************
3345 * mac80211 entry point functions
3347 *****************************************************************************/
3349 #define UCODE_READY_TIMEOUT (2 * HZ)
3351 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3353 struct iwl_priv *priv = hw->priv;
3356 IWL_DEBUG_MAC80211(priv, "enter\n");
3358 /* we should be verifying the device is ready to be opened */
3359 mutex_lock(&priv->mutex);
3361 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3362 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3363 * ucode filename and max sizes are card-specific. */
3365 if (!priv->ucode_code.len) {
3366 ret = iwl3945_read_ucode(priv);
3368 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3369 mutex_unlock(&priv->mutex);
3370 goto out_release_irq;
3374 ret = __iwl3945_up(priv);
3376 mutex_unlock(&priv->mutex);
3378 iwl_rfkill_set_hw_state(priv);
3381 goto out_release_irq;
3383 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3385 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3386 * mac80211 will not be run successfully. */
3387 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3388 test_bit(STATUS_READY, &priv->status),
3389 UCODE_READY_TIMEOUT);
3391 if (!test_bit(STATUS_READY, &priv->status)) {
3393 "Wait for START_ALIVE timeout after %dms.\n",
3394 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3396 goto out_release_irq;
3400 /* ucode is running and will send rfkill notifications,
3401 * no need to poll the killswitch state anymore */
3402 cancel_delayed_work(&priv->rfkill_poll);
3405 IWL_DEBUG_MAC80211(priv, "leave\n");
3410 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3414 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3416 struct iwl_priv *priv = hw->priv;
3418 IWL_DEBUG_MAC80211(priv, "enter\n");
3420 if (!priv->is_open) {
3421 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3427 if (iwl_is_ready_rf(priv)) {
3428 /* stop mac, cancel any scan request and clear
3429 * RXON_FILTER_ASSOC_MSK BIT
3431 mutex_lock(&priv->mutex);
3432 iwl_scan_cancel_timeout(priv, 100);
3433 mutex_unlock(&priv->mutex);
3438 flush_workqueue(priv->workqueue);
3440 /* start polling the killswitch state again */
3441 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3442 round_jiffies_relative(2 * HZ));
3444 IWL_DEBUG_MAC80211(priv, "leave\n");
3447 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3449 struct iwl_priv *priv = hw->priv;
3451 IWL_DEBUG_MAC80211(priv, "enter\n");
3453 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3454 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3456 if (iwl3945_tx_skb(priv, skb))
3457 dev_kfree_skb_any(skb);
3459 IWL_DEBUG_MAC80211(priv, "leave\n");
3460 return NETDEV_TX_OK;
3463 void iwl3945_config_ap(struct iwl_priv *priv)
3467 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3470 /* The following should be done only at AP bring up */
3471 if (!(iwl_is_associated(priv))) {
3473 /* RXON - unassoc (to set timing command) */
3474 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3475 iwlcore_commit_rxon(priv);
3478 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3479 iwl3945_setup_rxon_timing(priv);
3480 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3481 sizeof(priv->rxon_timing),
3482 &priv->rxon_timing);
3484 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3485 "Attempting to continue.\n");
3487 /* FIXME: what should be the assoc_id for AP? */
3488 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3489 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3490 priv->staging_rxon.flags |=
3491 RXON_FLG_SHORT_PREAMBLE_MSK;
3493 priv->staging_rxon.flags &=
3494 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3496 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3497 if (priv->assoc_capability &
3498 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3499 priv->staging_rxon.flags |=
3500 RXON_FLG_SHORT_SLOT_MSK;
3502 priv->staging_rxon.flags &=
3503 ~RXON_FLG_SHORT_SLOT_MSK;
3505 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3506 priv->staging_rxon.flags &=
3507 ~RXON_FLG_SHORT_SLOT_MSK;
3509 /* restore RXON assoc */
3510 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3511 iwlcore_commit_rxon(priv);
3512 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3514 iwl3945_send_beacon_cmd(priv);
3516 /* FIXME - we need to add code here to detect a totally new
3517 * configuration, reset the AP, unassoc, rxon timing, assoc,
3518 * clear sta table, add BCAST sta... */
3521 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3522 struct ieee80211_vif *vif,
3523 struct ieee80211_sta *sta,
3524 struct ieee80211_key_conf *key)
3526 struct iwl_priv *priv = hw->priv;
3529 u8 sta_id = IWL_INVALID_STATION;
3532 IWL_DEBUG_MAC80211(priv, "enter\n");
3534 if (iwl3945_mod_params.sw_crypto) {
3535 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3539 addr = sta ? sta->addr : iwl_bcast_addr;
3540 static_key = !iwl_is_associated(priv);
3543 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3544 if (sta_id == IWL_INVALID_STATION) {
3545 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3551 mutex_lock(&priv->mutex);
3552 iwl_scan_cancel_timeout(priv, 100);
3553 mutex_unlock(&priv->mutex);
3558 ret = iwl3945_set_static_key(priv, key);
3560 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3561 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3565 ret = iwl3945_remove_static_key(priv);
3567 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3568 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3574 IWL_DEBUG_MAC80211(priv, "leave\n");
3579 /*****************************************************************************
3583 *****************************************************************************/
3585 #ifdef CONFIG_IWLWIFI_DEBUG
3588 * The following adds a new attribute to the sysfs representation
3589 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3590 * used for controlling the debug level.
3592 * See the level definitions in iwl for details.
3594 static ssize_t show_debug_level(struct device *d,
3595 struct device_attribute *attr, char *buf)
3597 struct iwl_priv *priv = dev_get_drvdata(d);
3599 return sprintf(buf, "0x%08X\n", priv->debug_level);
3601 static ssize_t store_debug_level(struct device *d,
3602 struct device_attribute *attr,
3603 const char *buf, size_t count)
3605 struct iwl_priv *priv = dev_get_drvdata(d);
3609 ret = strict_strtoul(buf, 0, &val);
3611 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3613 priv->debug_level = val;
3615 return strnlen(buf, count);
3618 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3619 show_debug_level, store_debug_level);
3621 #endif /* CONFIG_IWLWIFI_DEBUG */
3623 static ssize_t show_temperature(struct device *d,
3624 struct device_attribute *attr, char *buf)
3626 struct iwl_priv *priv = dev_get_drvdata(d);
3628 if (!iwl_is_alive(priv))
3631 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3634 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3636 static ssize_t show_tx_power(struct device *d,
3637 struct device_attribute *attr, char *buf)
3639 struct iwl_priv *priv = dev_get_drvdata(d);
3640 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3643 static ssize_t store_tx_power(struct device *d,
3644 struct device_attribute *attr,
3645 const char *buf, size_t count)
3647 struct iwl_priv *priv = dev_get_drvdata(d);
3648 char *p = (char *)buf;
3651 val = simple_strtoul(p, &p, 10);
3653 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3655 iwl3945_hw_reg_set_txpower(priv, val);
3660 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3662 static ssize_t show_flags(struct device *d,
3663 struct device_attribute *attr, char *buf)
3665 struct iwl_priv *priv = dev_get_drvdata(d);
3667 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3670 static ssize_t store_flags(struct device *d,
3671 struct device_attribute *attr,
3672 const char *buf, size_t count)
3674 struct iwl_priv *priv = dev_get_drvdata(d);
3675 u32 flags = simple_strtoul(buf, NULL, 0);
3677 mutex_lock(&priv->mutex);
3678 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3679 /* Cancel any currently running scans... */
3680 if (iwl_scan_cancel_timeout(priv, 100))
3681 IWL_WARN(priv, "Could not cancel scan.\n");
3683 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3685 priv->staging_rxon.flags = cpu_to_le32(flags);
3686 iwlcore_commit_rxon(priv);
3689 mutex_unlock(&priv->mutex);
3694 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3696 static ssize_t show_filter_flags(struct device *d,
3697 struct device_attribute *attr, char *buf)
3699 struct iwl_priv *priv = dev_get_drvdata(d);
3701 return sprintf(buf, "0x%04X\n",
3702 le32_to_cpu(priv->active_rxon.filter_flags));
3705 static ssize_t store_filter_flags(struct device *d,
3706 struct device_attribute *attr,
3707 const char *buf, size_t count)
3709 struct iwl_priv *priv = dev_get_drvdata(d);
3710 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3712 mutex_lock(&priv->mutex);
3713 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3714 /* Cancel any currently running scans... */
3715 if (iwl_scan_cancel_timeout(priv, 100))
3716 IWL_WARN(priv, "Could not cancel scan.\n");
3718 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3719 "0x%04X\n", filter_flags);
3720 priv->staging_rxon.filter_flags =
3721 cpu_to_le32(filter_flags);
3722 iwlcore_commit_rxon(priv);
3725 mutex_unlock(&priv->mutex);
3730 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3731 store_filter_flags);
3733 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3735 static ssize_t show_measurement(struct device *d,
3736 struct device_attribute *attr, char *buf)
3738 struct iwl_priv *priv = dev_get_drvdata(d);
3739 struct iwl_spectrum_notification measure_report;
3740 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3741 u8 *data = (u8 *)&measure_report;
3742 unsigned long flags;
3744 spin_lock_irqsave(&priv->lock, flags);
3745 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3746 spin_unlock_irqrestore(&priv->lock, flags);
3749 memcpy(&measure_report, &priv->measure_report, size);
3750 priv->measurement_status = 0;
3751 spin_unlock_irqrestore(&priv->lock, flags);
3753 while (size && (PAGE_SIZE - len)) {
3754 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3755 PAGE_SIZE - len, 1);
3757 if (PAGE_SIZE - len)
3761 size -= min(size, 16U);
3767 static ssize_t store_measurement(struct device *d,
3768 struct device_attribute *attr,
3769 const char *buf, size_t count)
3771 struct iwl_priv *priv = dev_get_drvdata(d);
3772 struct ieee80211_measurement_params params = {
3773 .channel = le16_to_cpu(priv->active_rxon.channel),
3774 .start_time = cpu_to_le64(priv->last_tsf),
3775 .duration = cpu_to_le16(1),
3777 u8 type = IWL_MEASURE_BASIC;
3783 strncpy(buffer, buf, min(sizeof(buffer), count));
3784 channel = simple_strtoul(p, NULL, 0);
3786 params.channel = channel;
3789 while (*p && *p != ' ')
3792 type = simple_strtoul(p + 1, NULL, 0);
3795 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3796 "channel %d (for '%s')\n", type, params.channel, buf);
3797 iwl3945_get_measurement(priv, ¶ms, type);
3802 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3803 show_measurement, store_measurement);
3804 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3806 static ssize_t store_retry_rate(struct device *d,
3807 struct device_attribute *attr,
3808 const char *buf, size_t count)
3810 struct iwl_priv *priv = dev_get_drvdata(d);
3812 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3813 if (priv->retry_rate <= 0)
3814 priv->retry_rate = 1;
3819 static ssize_t show_retry_rate(struct device *d,
3820 struct device_attribute *attr, char *buf)
3822 struct iwl_priv *priv = dev_get_drvdata(d);
3823 return sprintf(buf, "%d", priv->retry_rate);
3826 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3830 static ssize_t store_power_level(struct device *d,
3831 struct device_attribute *attr,
3832 const char *buf, size_t count)
3834 struct iwl_priv *priv = dev_get_drvdata(d);
3839 mutex_lock(&priv->mutex);
3841 ret = strict_strtoul(buf, 10, &mode);
3845 ret = iwl_power_set_user_mode(priv, mode);
3847 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3853 mutex_unlock(&priv->mutex);
3857 static ssize_t show_power_level(struct device *d,
3858 struct device_attribute *attr, char *buf)
3860 struct iwl_priv *priv = dev_get_drvdata(d);
3861 int mode = priv->power_data.user_power_setting;
3862 int system = priv->power_data.system_power_setting;
3863 int level = priv->power_data.power_mode;
3867 case IWL_POWER_SYS_AUTO:
3868 p += sprintf(p, "SYSTEM:auto");
3870 case IWL_POWER_SYS_AC:
3871 p += sprintf(p, "SYSTEM:ac");
3873 case IWL_POWER_SYS_BATTERY:
3874 p += sprintf(p, "SYSTEM:battery");
3878 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3880 p += sprintf(p, "\tINDEX:%d", level);
3881 p += sprintf(p, "\n");
3885 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
3886 show_power_level, store_power_level);
3888 #define MAX_WX_STRING 80
3890 /* Values are in microsecond */
3891 static const s32 timeout_duration[] = {
3898 static const s32 period_duration[] = {
3906 static ssize_t show_channels(struct device *d,
3907 struct device_attribute *attr, char *buf)
3909 /* all this shit doesn't belong into sysfs anyway */
3913 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3915 static ssize_t show_statistics(struct device *d,
3916 struct device_attribute *attr, char *buf)
3918 struct iwl_priv *priv = dev_get_drvdata(d);
3919 u32 size = sizeof(struct iwl3945_notif_statistics);
3920 u32 len = 0, ofs = 0;
3921 u8 *data = (u8 *)&priv->statistics_39;
3924 if (!iwl_is_alive(priv))
3927 mutex_lock(&priv->mutex);
3928 rc = iwl_send_statistics_request(priv, 0);
3929 mutex_unlock(&priv->mutex);
3933 "Error sending statistics request: 0x%08X\n", rc);
3937 while (size && (PAGE_SIZE - len)) {
3938 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3939 PAGE_SIZE - len, 1);
3941 if (PAGE_SIZE - len)
3945 size -= min(size, 16U);
3951 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3953 static ssize_t show_antenna(struct device *d,
3954 struct device_attribute *attr, char *buf)
3956 struct iwl_priv *priv = dev_get_drvdata(d);
3958 if (!iwl_is_alive(priv))
3961 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3964 static ssize_t store_antenna(struct device *d,
3965 struct device_attribute *attr,
3966 const char *buf, size_t count)
3968 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3974 if (sscanf(buf, "%1i", &ant) != 1) {
3975 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3979 if ((ant >= 0) && (ant <= 2)) {
3980 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3981 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3983 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3989 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3991 static ssize_t show_status(struct device *d,
3992 struct device_attribute *attr, char *buf)
3994 struct iwl_priv *priv = dev_get_drvdata(d);
3995 if (!iwl_is_alive(priv))
3997 return sprintf(buf, "0x%08x\n", (int)priv->status);
4000 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4002 static ssize_t dump_error_log(struct device *d,
4003 struct device_attribute *attr,
4004 const char *buf, size_t count)
4006 struct iwl_priv *priv = dev_get_drvdata(d);
4007 char *p = (char *)buf;
4010 iwl3945_dump_nic_error_log(priv);
4012 return strnlen(buf, count);
4015 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
4017 static ssize_t dump_event_log(struct device *d,
4018 struct device_attribute *attr,
4019 const char *buf, size_t count)
4021 struct iwl_priv *priv = dev_get_drvdata(d);
4022 char *p = (char *)buf;
4025 iwl3945_dump_nic_event_log(priv);
4027 return strnlen(buf, count);
4030 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
4032 /*****************************************************************************
4034 * driver setup and tear down
4036 *****************************************************************************/
4038 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
4040 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4042 init_waitqueue_head(&priv->wait_command_queue);
4044 INIT_WORK(&priv->up, iwl3945_bg_up);
4045 INIT_WORK(&priv->restart, iwl3945_bg_restart);
4046 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
4047 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4048 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
4049 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
4050 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
4051 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
4052 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4053 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
4054 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
4055 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
4057 iwl3945_hw_setup_deferred_work(priv);
4059 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4060 iwl3945_irq_tasklet, (unsigned long)priv);
4063 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4065 iwl3945_hw_cancel_deferred_work(priv);
4067 cancel_delayed_work_sync(&priv->init_alive_start);
4068 cancel_delayed_work(&priv->scan_check);
4069 cancel_delayed_work(&priv->alive_start);
4070 cancel_work_sync(&priv->beacon_update);
4073 static struct attribute *iwl3945_sysfs_entries[] = {
4074 &dev_attr_antenna.attr,
4075 &dev_attr_channels.attr,
4076 &dev_attr_dump_errors.attr,
4077 &dev_attr_dump_events.attr,
4078 &dev_attr_flags.attr,
4079 &dev_attr_filter_flags.attr,
4080 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4081 &dev_attr_measurement.attr,
4083 &dev_attr_power_level.attr,
4084 &dev_attr_retry_rate.attr,
4085 &dev_attr_statistics.attr,
4086 &dev_attr_status.attr,
4087 &dev_attr_temperature.attr,
4088 &dev_attr_tx_power.attr,
4089 #ifdef CONFIG_IWLWIFI_DEBUG
4090 &dev_attr_debug_level.attr,
4095 static struct attribute_group iwl3945_attribute_group = {
4096 .name = NULL, /* put in device directory */
4097 .attrs = iwl3945_sysfs_entries,
4100 static struct ieee80211_ops iwl3945_hw_ops = {
4101 .tx = iwl3945_mac_tx,
4102 .start = iwl3945_mac_start,
4103 .stop = iwl3945_mac_stop,
4104 .add_interface = iwl_mac_add_interface,
4105 .remove_interface = iwl_mac_remove_interface,
4106 .config = iwl_mac_config,
4107 .configure_filter = iwl_configure_filter,
4108 .set_key = iwl3945_mac_set_key,
4109 .get_tx_stats = iwl_mac_get_tx_stats,
4110 .conf_tx = iwl_mac_conf_tx,
4111 .reset_tsf = iwl_mac_reset_tsf,
4112 .bss_info_changed = iwl_bss_info_changed,
4113 .hw_scan = iwl_mac_hw_scan
4116 static int iwl3945_init_drv(struct iwl_priv *priv)
4119 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4121 priv->retry_rate = 1;
4122 priv->ibss_beacon = NULL;
4124 spin_lock_init(&priv->lock);
4125 spin_lock_init(&priv->power_data.lock);
4126 spin_lock_init(&priv->sta_lock);
4127 spin_lock_init(&priv->hcmd_lock);
4129 INIT_LIST_HEAD(&priv->free_frames);
4131 mutex_init(&priv->mutex);
4133 /* Clear the driver's (not device's) station table */
4134 priv->cfg->ops->smgmt->clear_station_table(priv);
4136 priv->data_retry_limit = -1;
4137 priv->ieee_channels = NULL;
4138 priv->ieee_rates = NULL;
4139 priv->band = IEEE80211_BAND_2GHZ;
4141 priv->iw_mode = NL80211_IFTYPE_STATION;
4143 iwl_reset_qos(priv);
4145 priv->qos_data.qos_active = 0;
4146 priv->qos_data.qos_cap.val = 0;
4148 priv->rates_mask = IWL_RATES_MASK;
4149 /* If power management is turned on, default to CAM mode */
4150 priv->power_mode = IWL_POWER_MODE_CAM;
4151 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4153 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4154 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4159 ret = iwl_init_channel_map(priv);
4161 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4165 /* Set up txpower settings in driver for all channels */
4166 if (iwl3945_txpower_set_from_eeprom(priv)) {
4168 goto err_free_channel_map;
4171 ret = iwlcore_init_geos(priv);
4173 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4174 goto err_free_channel_map;
4176 iwl3945_init_hw_rates(priv, priv->ieee_rates);
4180 err_free_channel_map:
4181 iwl_free_channel_map(priv);
4186 static int iwl3945_setup_mac(struct iwl_priv *priv)
4189 struct ieee80211_hw *hw = priv->hw;
4191 hw->rate_control_algorithm = "iwl-3945-rs";
4192 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4194 /* Tell mac80211 our characteristics */
4195 hw->flags = IEEE80211_HW_SIGNAL_DBM |
4196 IEEE80211_HW_NOISE_DBM |
4197 IEEE80211_HW_SPECTRUM_MGMT;
4199 hw->wiphy->interface_modes =
4200 BIT(NL80211_IFTYPE_STATION) |
4201 BIT(NL80211_IFTYPE_ADHOC);
4203 hw->wiphy->custom_regulatory = true;
4205 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
4206 /* we create the 802.11 header and a zero-length SSID element */
4207 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
4209 /* Default value; 4 EDCA QOS priorities */
4212 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4213 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4214 &priv->bands[IEEE80211_BAND_2GHZ];
4216 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4217 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4218 &priv->bands[IEEE80211_BAND_5GHZ];
4220 ret = ieee80211_register_hw(priv->hw);
4222 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4225 priv->mac80211_registered = 1;
4230 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4233 struct iwl_priv *priv;
4234 struct ieee80211_hw *hw;
4235 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4236 struct iwl3945_eeprom *eeprom;
4237 unsigned long flags;
4239 /***********************
4240 * 1. Allocating HW data
4241 * ********************/
4243 /* mac80211 allocates memory for this device instance, including
4244 * space for this driver's private structure */
4245 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4247 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4252 SET_IEEE80211_DEV(hw, &pdev->dev);
4254 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4255 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4257 "invalid queues_num, should be between %d and %d\n",
4258 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4260 goto out_ieee80211_free_hw;
4264 * Disabling hardware scan means that mac80211 will perform scans
4265 * "the hard way", rather than using device's scan.
4267 if (iwl3945_mod_params.disable_hw_scan) {
4268 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4269 iwl3945_hw_ops.hw_scan = NULL;
4273 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4275 priv->pci_dev = pdev;
4277 #ifdef CONFIG_IWLWIFI_DEBUG
4278 priv->debug_level = iwl3945_mod_params.debug;
4279 atomic_set(&priv->restrict_refcnt, 0);
4282 /***************************
4283 * 2. Initializing PCI bus
4284 * *************************/
4285 if (pci_enable_device(pdev)) {
4287 goto out_ieee80211_free_hw;
4290 pci_set_master(pdev);
4292 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4294 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4296 IWL_WARN(priv, "No suitable DMA available.\n");
4297 goto out_pci_disable_device;
4300 pci_set_drvdata(pdev, priv);
4301 err = pci_request_regions(pdev, DRV_NAME);
4303 goto out_pci_disable_device;
4305 /***********************
4306 * 3. Read REV Register
4307 * ********************/
4308 priv->hw_base = pci_iomap(pdev, 0, 0);
4309 if (!priv->hw_base) {
4311 goto out_pci_release_regions;
4314 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4315 (unsigned long long) pci_resource_len(pdev, 0));
4316 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4318 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4319 * PCI Tx retries from interfering with C3 CPU state */
4320 pci_write_config_byte(pdev, 0x41, 0x00);
4323 err = priv->cfg->ops->lib->apm_ops.init(priv);
4325 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4329 /***********************
4331 * ********************/
4333 /* Read the EEPROM */
4334 err = iwl_eeprom_init(priv);
4336 IWL_ERR(priv, "Unable to init EEPROM\n");
4339 /* MAC Address location in EEPROM same for 3945/4965 */
4340 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4341 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4342 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4343 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4345 /***********************
4346 * 5. Setup HW Constants
4347 * ********************/
4348 /* Device-specific setup */
4349 if (iwl3945_hw_set_hw_params(priv)) {
4350 IWL_ERR(priv, "failed to set hw settings\n");
4351 goto out_eeprom_free;
4354 /***********************
4356 * ********************/
4358 err = iwl3945_init_drv(priv);
4360 IWL_ERR(priv, "initializing driver failed\n");
4361 goto out_unset_hw_params;
4364 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4367 /***********************
4369 * ********************/
4371 spin_lock_irqsave(&priv->lock, flags);
4372 iwl_disable_interrupts(priv);
4373 spin_unlock_irqrestore(&priv->lock, flags);
4375 pci_enable_msi(priv->pci_dev);
4377 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
4380 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4381 goto out_disable_msi;
4384 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4386 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4387 goto out_release_irq;
4390 iwl_set_rxon_channel(priv,
4391 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4392 iwl3945_setup_deferred_work(priv);
4393 iwl3945_setup_rx_handlers(priv);
4395 /*********************************
4396 * 8. Setup and Register mac80211
4397 * *******************************/
4399 iwl_enable_interrupts(priv);
4401 err = iwl3945_setup_mac(priv);
4403 goto out_remove_sysfs;
4405 err = iwl_dbgfs_register(priv, DRV_NAME);
4407 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4409 err = iwl_rfkill_init(priv);
4411 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4412 "Ignoring error: %d\n", err);
4414 iwl_rfkill_set_hw_state(priv);
4416 /* Start monitoring the killswitch */
4417 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4423 destroy_workqueue(priv->workqueue);
4424 priv->workqueue = NULL;
4425 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4427 free_irq(priv->pci_dev->irq, priv);
4429 pci_disable_msi(priv->pci_dev);
4430 iwlcore_free_geos(priv);
4431 iwl_free_channel_map(priv);
4432 out_unset_hw_params:
4433 iwl3945_unset_hw_params(priv);
4435 iwl_eeprom_free(priv);
4437 pci_iounmap(pdev, priv->hw_base);
4438 out_pci_release_regions:
4439 pci_release_regions(pdev);
4440 out_pci_disable_device:
4441 pci_set_drvdata(pdev, NULL);
4442 pci_disable_device(pdev);
4443 out_ieee80211_free_hw:
4444 ieee80211_free_hw(priv->hw);
4449 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4451 struct iwl_priv *priv = pci_get_drvdata(pdev);
4452 unsigned long flags;
4457 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4459 iwl_dbgfs_unregister(priv);
4461 set_bit(STATUS_EXIT_PENDING, &priv->status);
4463 if (priv->mac80211_registered) {
4464 ieee80211_unregister_hw(priv->hw);
4465 priv->mac80211_registered = 0;
4470 /* make sure we flush any pending irq or
4471 * tasklet for the driver
4473 spin_lock_irqsave(&priv->lock, flags);
4474 iwl_disable_interrupts(priv);
4475 spin_unlock_irqrestore(&priv->lock, flags);
4477 iwl_synchronize_irq(priv);
4479 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4481 iwl_rfkill_unregister(priv);
4482 cancel_delayed_work_sync(&priv->rfkill_poll);
4484 iwl3945_dealloc_ucode_pci(priv);
4487 iwl3945_rx_queue_free(priv, &priv->rxq);
4488 iwl3945_hw_txq_ctx_free(priv);
4490 iwl3945_unset_hw_params(priv);
4491 priv->cfg->ops->smgmt->clear_station_table(priv);
4493 /*netif_stop_queue(dev); */
4494 flush_workqueue(priv->workqueue);
4496 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4497 * priv->workqueue... so we can't take down the workqueue
4499 destroy_workqueue(priv->workqueue);
4500 priv->workqueue = NULL;
4502 free_irq(pdev->irq, priv);
4503 pci_disable_msi(pdev);
4505 pci_iounmap(pdev, priv->hw_base);
4506 pci_release_regions(pdev);
4507 pci_disable_device(pdev);
4508 pci_set_drvdata(pdev, NULL);
4510 iwl_free_channel_map(priv);
4511 iwlcore_free_geos(priv);
4513 if (priv->ibss_beacon)
4514 dev_kfree_skb(priv->ibss_beacon);
4516 ieee80211_free_hw(priv->hw);
4520 /*****************************************************************************
4522 * driver and module entry point
4524 *****************************************************************************/
4526 static struct pci_driver iwl3945_driver = {
4528 .id_table = iwl3945_hw_card_ids,
4529 .probe = iwl3945_pci_probe,
4530 .remove = __devexit_p(iwl3945_pci_remove),
4532 .suspend = iwl_pci_suspend,
4533 .resume = iwl_pci_resume,
4537 static int __init iwl3945_init(void)
4541 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4542 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4544 ret = iwl3945_rate_control_register();
4546 printk(KERN_ERR DRV_NAME
4547 "Unable to register rate control algorithm: %d\n", ret);
4551 ret = pci_register_driver(&iwl3945_driver);
4553 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4554 goto error_register;
4560 iwl3945_rate_control_unregister();
4564 static void __exit iwl3945_exit(void)
4566 pci_unregister_driver(&iwl3945_driver);
4567 iwl3945_rate_control_unregister();
4570 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4572 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4573 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4574 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4575 MODULE_PARM_DESC(swcrypto,
4576 "using software crypto (default 1 [software])\n");
4577 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4578 MODULE_PARM_DESC(debug, "debug output mask");
4579 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4580 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4582 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4583 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4585 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4586 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4588 module_exit(iwl3945_exit);
4589 module_init(iwl3945_init);