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(conf->beacon_int);
555 /* TODO: we need to get atim_window from upper stack
556 * for now we set to 0 */
557 priv->rxon_timing.atim_window = 0;
561 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
562 result = do_div(tsf, interval_tm_unit);
563 priv->rxon_timing.beacon_init_val =
564 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
566 IWL_DEBUG_ASSOC(priv,
567 "beacon interval %d beacon timer %d beacon tim %d\n",
568 le16_to_cpu(priv->rxon_timing.beacon_interval),
569 le32_to_cpu(priv->rxon_timing.beacon_init_val),
570 le16_to_cpu(priv->rxon_timing.atim_window));
573 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
574 struct ieee80211_tx_info *info,
576 struct sk_buff *skb_frag,
579 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
580 struct iwl3945_hw_key *keyinfo =
581 &priv->stations_39[sta_id].keyinfo;
583 switch (keyinfo->alg) {
585 tx->sec_ctl = TX_CMD_SEC_CCM;
586 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
587 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
594 tx->sec_ctl = TX_CMD_SEC_WEP |
595 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
597 if (keyinfo->keylen == 13)
598 tx->sec_ctl |= TX_CMD_SEC_KEY128;
600 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
602 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
603 "with key %d\n", info->control.hw_key->hw_key_idx);
607 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
613 * handle build REPLY_TX command notification.
615 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
617 struct ieee80211_tx_info *info,
618 struct ieee80211_hdr *hdr, u8 std_id)
620 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
621 __le32 tx_flags = tx->tx_flags;
622 __le16 fc = hdr->frame_control;
623 u8 rc_flags = info->control.rates[0].flags;
625 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
626 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
627 tx_flags |= TX_CMD_FLG_ACK_MSK;
628 if (ieee80211_is_mgmt(fc))
629 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
630 if (ieee80211_is_probe_resp(fc) &&
631 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
632 tx_flags |= TX_CMD_FLG_TSF_MSK;
634 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
635 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
639 if (ieee80211_has_morefrags(fc))
640 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
642 if (ieee80211_is_data_qos(fc)) {
643 u8 *qc = ieee80211_get_qos_ctl(hdr);
644 tx->tid_tspec = qc[0] & 0xf;
645 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
647 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
650 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
651 tx_flags |= TX_CMD_FLG_RTS_MSK;
652 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
653 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
654 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
655 tx_flags |= TX_CMD_FLG_CTS_MSK;
658 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
659 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
661 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
662 if (ieee80211_is_mgmt(fc)) {
663 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
664 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
666 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
668 tx->timeout.pm_frame_timeout = 0;
669 #ifdef CONFIG_IWLWIFI_LEDS
670 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
675 tx->tx_flags = tx_flags;
676 tx->next_frame_len = 0;
680 * start REPLY_TX command process
682 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
684 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
685 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
686 struct iwl3945_tx_cmd *tx;
687 struct iwl_tx_queue *txq = NULL;
688 struct iwl_queue *q = NULL;
689 struct iwl_cmd *out_cmd = NULL;
690 dma_addr_t phys_addr;
691 dma_addr_t txcmd_phys;
692 int txq_id = skb_get_queue_mapping(skb);
693 u16 len, idx, len_org, hdr_len;
700 u8 wait_write_ptr = 0;
705 spin_lock_irqsave(&priv->lock, flags);
706 if (iwl_is_rfkill(priv)) {
707 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
711 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
712 IWL_ERR(priv, "ERROR: No TX rate available.\n");
716 unicast = !is_multicast_ether_addr(hdr->addr1);
719 fc = hdr->frame_control;
721 #ifdef CONFIG_IWLWIFI_DEBUG
722 if (ieee80211_is_auth(fc))
723 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
724 else if (ieee80211_is_assoc_req(fc))
725 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
726 else if (ieee80211_is_reassoc_req(fc))
727 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
730 /* drop all data frame if we are not associated */
731 if (ieee80211_is_data(fc) &&
732 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
733 (!iwl_is_associated(priv) ||
734 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
735 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
739 spin_unlock_irqrestore(&priv->lock, flags);
741 hdr_len = ieee80211_hdrlen(fc);
743 /* Find (or create) index into station table for destination station */
744 sta_id = iwl_get_sta_id(priv, hdr);
745 if (sta_id == IWL_INVALID_STATION) {
746 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
751 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
753 if (ieee80211_is_data_qos(fc)) {
754 qc = ieee80211_get_qos_ctl(hdr);
755 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
756 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
758 hdr->seq_ctrl = cpu_to_le16(seq_number) |
760 cpu_to_le16(IEEE80211_SCTL_FRAG));
764 /* Descriptor for chosen Tx queue */
765 txq = &priv->txq[txq_id];
768 spin_lock_irqsave(&priv->lock, flags);
770 idx = get_cmd_index(q, q->write_ptr, 0);
772 /* Set up driver data for this TFD */
773 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
774 txq->txb[q->write_ptr].skb[0] = skb;
776 /* Init first empty entry in queue's array of Tx/cmd buffers */
777 out_cmd = txq->cmd[idx];
778 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
779 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
780 memset(tx, 0, sizeof(*tx));
783 * Set up the Tx-command (not MAC!) header.
784 * Store the chosen Tx queue and TFD index within the sequence field;
785 * after Tx, uCode's Tx response will return this value so driver can
786 * locate the frame within the tx queue and do post-tx processing.
788 out_cmd->hdr.cmd = REPLY_TX;
789 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
790 INDEX_TO_SEQ(q->write_ptr)));
792 /* Copy MAC header from skb into command buffer */
793 memcpy(tx->hdr, hdr, hdr_len);
796 * Use the first empty entry in this queue's command buffer array
797 * to contain the Tx command and MAC header concatenated together
798 * (payload data will be in another buffer).
799 * Size of this varies, due to varying MAC header length.
800 * If end is not dword aligned, we'll have 2 extra bytes at the end
801 * of the MAC header (device reads on dword boundaries).
802 * We'll tell device about this padding later.
804 len = sizeof(struct iwl3945_tx_cmd) +
805 sizeof(struct iwl_cmd_header) + hdr_len;
808 len = (len + 3) & ~3;
815 /* Physical address of this Tx command's header (not MAC header!),
816 * within command buffer array. */
817 txcmd_phys = pci_map_single(priv->pci_dev,
818 out_cmd, sizeof(struct iwl_cmd),
820 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
821 pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
822 /* Add buffer containing Tx command and MAC(!) header to TFD's
824 txcmd_phys += offsetof(struct iwl_cmd, hdr);
826 /* Add buffer containing Tx command and MAC(!) header to TFD's
828 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
829 txcmd_phys, len, 1, 0);
831 if (info->control.hw_key)
832 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
834 /* Set up TFD's 2nd entry to point directly to remainder of skb,
835 * if any (802.11 null frames have no payload). */
836 len = skb->len - hdr_len;
838 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
839 len, PCI_DMA_TODEVICE);
840 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
845 /* Total # bytes to be transmitted */
847 tx->len = cpu_to_le16(len);
849 /* TODO need this for burst mode later on */
850 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
852 /* set is_hcca to 0; it probably will never be implemented */
853 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
855 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
856 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
858 if (!ieee80211_has_morefrags(hdr->frame_control)) {
859 txq->need_update = 1;
861 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
864 txq->need_update = 0;
867 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
869 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
870 ieee80211_hdrlen(fc));
872 /* Tell device the write index *just past* this latest filled TFD */
873 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
874 rc = iwl_txq_update_write_ptr(priv, txq);
875 spin_unlock_irqrestore(&priv->lock, flags);
880 if ((iwl_queue_space(q) < q->high_mark)
881 && priv->mac80211_registered) {
882 if (wait_write_ptr) {
883 spin_lock_irqsave(&priv->lock, flags);
884 txq->need_update = 1;
885 iwl_txq_update_write_ptr(priv, txq);
886 spin_unlock_irqrestore(&priv->lock, flags);
889 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
895 spin_unlock_irqrestore(&priv->lock, flags);
900 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
902 #include "iwl-spectrum.h"
904 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
905 #define BEACON_TIME_MASK_HIGH 0xFF000000
906 #define TIME_UNIT 1024
909 * extended beacon time format
910 * time in usec will be changed into a 32-bit value in 8:24 format
911 * the high 1 byte is the beacon counts
912 * the lower 3 bytes is the time in usec within one beacon interval
915 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
919 u32 interval = beacon_interval * 1024;
921 if (!interval || !usec)
924 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
925 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
927 return (quot << 24) + rem;
930 /* base is usually what we get from ucode with each received frame,
931 * the same as HW timer counter counting down
934 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
936 u32 base_low = base & BEACON_TIME_MASK_LOW;
937 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
938 u32 interval = beacon_interval * TIME_UNIT;
939 u32 res = (base & BEACON_TIME_MASK_HIGH) +
940 (addon & BEACON_TIME_MASK_HIGH);
942 if (base_low > addon_low)
943 res += base_low - addon_low;
944 else if (base_low < addon_low) {
945 res += interval + base_low - addon_low;
950 return cpu_to_le32(res);
953 static int iwl3945_get_measurement(struct iwl_priv *priv,
954 struct ieee80211_measurement_params *params,
957 struct iwl_spectrum_cmd spectrum;
958 struct iwl_rx_packet *res;
959 struct iwl_host_cmd cmd = {
960 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
961 .data = (void *)&spectrum,
962 .meta.flags = CMD_WANT_SKB,
964 u32 add_time = le64_to_cpu(params->start_time);
966 int spectrum_resp_status;
967 int duration = le16_to_cpu(params->duration);
969 if (iwl_is_associated(priv))
971 iwl3945_usecs_to_beacons(
972 le64_to_cpu(params->start_time) - priv->last_tsf,
973 le16_to_cpu(priv->rxon_timing.beacon_interval));
975 memset(&spectrum, 0, sizeof(spectrum));
977 spectrum.channel_count = cpu_to_le16(1);
979 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
980 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
981 cmd.len = sizeof(spectrum);
982 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
984 if (iwl_is_associated(priv))
985 spectrum.start_time =
986 iwl3945_add_beacon_time(priv->last_beacon_time,
988 le16_to_cpu(priv->rxon_timing.beacon_interval));
990 spectrum.start_time = 0;
992 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
993 spectrum.channels[0].channel = params->channel;
994 spectrum.channels[0].type = type;
995 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
996 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
997 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
999 rc = iwl_send_cmd_sync(priv, &cmd);
1003 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1004 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1005 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1009 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1010 switch (spectrum_resp_status) {
1011 case 0: /* Command will be handled */
1012 if (res->u.spectrum.id != 0xff) {
1013 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1014 res->u.spectrum.id);
1015 priv->measurement_status &= ~MEASUREMENT_READY;
1017 priv->measurement_status |= MEASUREMENT_ACTIVE;
1021 case 1: /* Command will not be handled */
1026 dev_kfree_skb_any(cmd.meta.u.skb);
1032 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1033 struct iwl_rx_mem_buffer *rxb)
1035 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1036 struct iwl_alive_resp *palive;
1037 struct delayed_work *pwork;
1039 palive = &pkt->u.alive_frame;
1041 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1043 palive->is_valid, palive->ver_type,
1044 palive->ver_subtype);
1046 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1047 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1048 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1049 sizeof(struct iwl_alive_resp));
1050 pwork = &priv->init_alive_start;
1052 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1053 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1054 sizeof(struct iwl_alive_resp));
1055 pwork = &priv->alive_start;
1056 iwl3945_disable_events(priv);
1059 /* We delay the ALIVE response by 5ms to
1060 * give the HW RF Kill time to activate... */
1061 if (palive->is_valid == UCODE_VALID_OK)
1062 queue_delayed_work(priv->workqueue, pwork,
1063 msecs_to_jiffies(5));
1065 IWL_WARN(priv, "uCode did not respond OK.\n");
1068 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1069 struct iwl_rx_mem_buffer *rxb)
1071 #ifdef CONFIG_IWLWIFI_DEBUG
1072 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1075 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1079 static void iwl3945_bg_beacon_update(struct work_struct *work)
1081 struct iwl_priv *priv =
1082 container_of(work, struct iwl_priv, beacon_update);
1083 struct sk_buff *beacon;
1085 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1086 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1089 IWL_ERR(priv, "update beacon failed\n");
1093 mutex_lock(&priv->mutex);
1094 /* new beacon skb is allocated every time; dispose previous.*/
1095 if (priv->ibss_beacon)
1096 dev_kfree_skb(priv->ibss_beacon);
1098 priv->ibss_beacon = beacon;
1099 mutex_unlock(&priv->mutex);
1101 iwl3945_send_beacon_cmd(priv);
1104 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1105 struct iwl_rx_mem_buffer *rxb)
1107 #ifdef CONFIG_IWLWIFI_DEBUG
1108 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1109 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1110 u8 rate = beacon->beacon_notify_hdr.rate;
1112 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1113 "tsf %d %d rate %d\n",
1114 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1115 beacon->beacon_notify_hdr.failure_frame,
1116 le32_to_cpu(beacon->ibss_mgr_status),
1117 le32_to_cpu(beacon->high_tsf),
1118 le32_to_cpu(beacon->low_tsf), rate);
1121 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1122 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1123 queue_work(priv->workqueue, &priv->beacon_update);
1126 /* Handle notification from uCode that card's power state is changing
1127 * due to software, hardware, or critical temperature RFKILL */
1128 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1129 struct iwl_rx_mem_buffer *rxb)
1131 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1132 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1133 unsigned long status = priv->status;
1135 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1136 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1137 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1139 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1140 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1142 if (flags & HW_CARD_DISABLED)
1143 set_bit(STATUS_RF_KILL_HW, &priv->status);
1145 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1148 if (flags & SW_CARD_DISABLED)
1149 set_bit(STATUS_RF_KILL_SW, &priv->status);
1151 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1153 iwl_scan_cancel(priv);
1155 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1156 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1157 (test_bit(STATUS_RF_KILL_SW, &status) !=
1158 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1159 queue_work(priv->workqueue, &priv->rf_kill);
1161 wake_up_interruptible(&priv->wait_command_queue);
1165 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1167 * Setup the RX handlers for each of the reply types sent from the uCode
1170 * This function chains into the hardware specific files for them to setup
1171 * any hardware specific handlers as well.
1173 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1175 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1176 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1177 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1178 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1179 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1180 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1181 iwl_rx_pm_debug_statistics_notif;
1182 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1185 * The same handler is used for both the REPLY to a discrete
1186 * statistics request from the host as well as for the periodic
1187 * statistics notifications (after received beacons) from the uCode.
1189 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1190 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1192 iwl_setup_spectrum_handlers(priv);
1193 iwl_setup_rx_scan_handlers(priv);
1194 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1196 /* Set up hardware specific Rx handlers */
1197 iwl3945_hw_rx_handler_setup(priv);
1200 /************************** RX-FUNCTIONS ****************************/
1202 * Rx theory of operation
1204 * The host allocates 32 DMA target addresses and passes the host address
1205 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1209 * The host/firmware share two index registers for managing the Rx buffers.
1211 * The READ index maps to the first position that the firmware may be writing
1212 * to -- the driver can read up to (but not including) this position and get
1214 * The READ index is managed by the firmware once the card is enabled.
1216 * The WRITE index maps to the last position the driver has read from -- the
1217 * position preceding WRITE is the last slot the firmware can place a packet.
1219 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1222 * During initialization, the host sets up the READ queue position to the first
1223 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1225 * When the firmware places a packet in a buffer, it will advance the READ index
1226 * and fire the RX interrupt. The driver can then query the READ index and
1227 * process as many packets as possible, moving the WRITE index forward as it
1228 * resets the Rx queue buffers with new memory.
1230 * The management in the driver is as follows:
1231 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1232 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1233 * to replenish the iwl->rxq->rx_free.
1234 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1235 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1236 * 'processed' and 'read' driver indexes as well)
1237 * + A received packet is processed and handed to the kernel network stack,
1238 * detached from the iwl->rxq. The driver 'processed' index is updated.
1239 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1240 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1241 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1242 * were enough free buffers and RX_STALLED is set it is cleared.
1247 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1248 * iwl3945_rx_queue_restock
1249 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1250 * queue, updates firmware pointers, and updates
1251 * the WRITE index. If insufficient rx_free buffers
1252 * are available, schedules iwl3945_rx_replenish
1254 * -- enable interrupts --
1255 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1256 * READ INDEX, detaching the SKB from the pool.
1257 * Moves the packet buffer from queue to rx_used.
1258 * Calls iwl3945_rx_queue_restock to refill any empty
1265 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1267 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1268 dma_addr_t dma_addr)
1270 return cpu_to_le32((u32)dma_addr);
1274 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1276 * If there are slots in the RX queue that need to be restocked,
1277 * and we have free pre-allocated buffers, fill the ranks as much
1278 * as we can, pulling from rx_free.
1280 * This moves the 'write' index forward to catch up with 'processed', and
1281 * also updates the memory address in the firmware to reference the new
1284 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1286 struct iwl_rx_queue *rxq = &priv->rxq;
1287 struct list_head *element;
1288 struct iwl_rx_mem_buffer *rxb;
1289 unsigned long flags;
1292 spin_lock_irqsave(&rxq->lock, flags);
1293 write = rxq->write & ~0x7;
1294 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1295 /* Get next free Rx buffer, remove from free list */
1296 element = rxq->rx_free.next;
1297 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1300 /* Point to Rx buffer via next RBD in circular buffer */
1301 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1302 rxq->queue[rxq->write] = rxb;
1303 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1306 spin_unlock_irqrestore(&rxq->lock, flags);
1307 /* If the pre-allocated buffer pool is dropping low, schedule to
1309 if (rxq->free_count <= RX_LOW_WATERMARK)
1310 queue_work(priv->workqueue, &priv->rx_replenish);
1313 /* If we've added more space for the firmware to place data, tell it.
1314 * Increment device's write pointer in multiples of 8. */
1315 if ((write != (rxq->write & ~0x7))
1316 || (abs(rxq->write - rxq->read) > 7)) {
1317 spin_lock_irqsave(&rxq->lock, flags);
1318 rxq->need_update = 1;
1319 spin_unlock_irqrestore(&rxq->lock, flags);
1320 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1329 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1331 * When moving to rx_free an SKB is allocated for the slot.
1333 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1334 * This is called as a scheduled work item (except for during initialization)
1336 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1338 struct iwl_rx_queue *rxq = &priv->rxq;
1339 struct list_head *element;
1340 struct iwl_rx_mem_buffer *rxb;
1341 unsigned long flags;
1342 spin_lock_irqsave(&rxq->lock, flags);
1343 while (!list_empty(&rxq->rx_used)) {
1344 element = rxq->rx_used.next;
1345 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1347 /* Alloc a new receive buffer */
1349 alloc_skb(priv->hw_params.rx_buf_size,
1350 __GFP_NOWARN | GFP_ATOMIC);
1352 if (net_ratelimit())
1353 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1354 /* We don't reschedule replenish work here -- we will
1355 * call the restock method and if it still needs
1356 * more buffers it will schedule replenish */
1360 /* If radiotap head is required, reserve some headroom here.
1361 * The physical head count is a variable rx_stats->phy_count.
1362 * We reserve 4 bytes here. Plus these extra bytes, the
1363 * headroom of the physical head should be enough for the
1364 * radiotap head that iwl3945 supported. See iwl3945_rt.
1366 skb_reserve(rxb->skb, 4);
1368 priv->alloc_rxb_skb++;
1371 /* Get physical address of RB/SKB */
1372 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1374 priv->hw_params.rx_buf_size,
1375 PCI_DMA_FROMDEVICE);
1376 list_add_tail(&rxb->list, &rxq->rx_free);
1379 spin_unlock_irqrestore(&rxq->lock, flags);
1383 * this should be called while priv->lock is locked
1385 static void __iwl3945_rx_replenish(void *data)
1387 struct iwl_priv *priv = data;
1389 iwl3945_rx_allocate(priv);
1390 iwl3945_rx_queue_restock(priv);
1394 void iwl3945_rx_replenish(void *data)
1396 struct iwl_priv *priv = data;
1397 unsigned long flags;
1399 iwl3945_rx_allocate(priv);
1401 spin_lock_irqsave(&priv->lock, flags);
1402 iwl3945_rx_queue_restock(priv);
1403 spin_unlock_irqrestore(&priv->lock, flags);
1406 /* Convert linear signal-to-noise ratio into dB */
1407 static u8 ratio2dB[100] = {
1408 /* 0 1 2 3 4 5 6 7 8 9 */
1409 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1410 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1411 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1412 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1413 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1414 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1415 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1416 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1417 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1418 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1421 /* Calculates a relative dB value from a ratio of linear
1422 * (i.e. not dB) signal levels.
1423 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1424 int iwl3945_calc_db_from_ratio(int sig_ratio)
1426 /* 1000:1 or higher just report as 60 dB */
1427 if (sig_ratio >= 1000)
1430 /* 100:1 or higher, divide by 10 and use table,
1431 * add 20 dB to make up for divide by 10 */
1432 if (sig_ratio >= 100)
1433 return 20 + (int)ratio2dB[sig_ratio/10];
1435 /* We shouldn't see this */
1439 /* Use table for ratios 1:1 - 99:1 */
1440 return (int)ratio2dB[sig_ratio];
1443 #define PERFECT_RSSI (-20) /* dBm */
1444 #define WORST_RSSI (-95) /* dBm */
1445 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1447 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1448 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1449 * about formulas used below. */
1450 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1453 int degradation = PERFECT_RSSI - rssi_dbm;
1455 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1456 * as indicator; formula is (signal dbm - noise dbm).
1457 * SNR at or above 40 is a great signal (100%).
1458 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1459 * Weakest usable signal is usually 10 - 15 dB SNR. */
1461 if (rssi_dbm - noise_dbm >= 40)
1463 else if (rssi_dbm < noise_dbm)
1465 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1467 /* Else use just the signal level.
1468 * This formula is a least squares fit of data points collected and
1469 * compared with a reference system that had a percentage (%) display
1470 * for signal quality. */
1472 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1473 (15 * RSSI_RANGE + 62 * degradation)) /
1474 (RSSI_RANGE * RSSI_RANGE);
1478 else if (sig_qual < 1)
1485 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1487 * Uses the priv->rx_handlers callback function array to invoke
1488 * the appropriate handlers, including command responses,
1489 * frame-received notifications, and other notifications.
1491 static void iwl3945_rx_handle(struct iwl_priv *priv)
1493 struct iwl_rx_mem_buffer *rxb;
1494 struct iwl_rx_packet *pkt;
1495 struct iwl_rx_queue *rxq = &priv->rxq;
1498 unsigned long flags;
1502 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1503 * buffer that the driver may process (last buffer filled by ucode). */
1504 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1507 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1509 /* Rx interrupt, but nothing sent from uCode */
1511 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1514 rxb = rxq->queue[i];
1516 /* If an RXB doesn't have a Rx queue slot associated with it,
1517 * then a bug has been introduced in the queue refilling
1518 * routines -- catch it here */
1519 BUG_ON(rxb == NULL);
1521 rxq->queue[i] = NULL;
1523 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
1524 priv->hw_params.rx_buf_size,
1525 PCI_DMA_FROMDEVICE);
1526 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1528 /* Reclaim a command buffer only if this packet is a response
1529 * to a (driver-originated) command.
1530 * If the packet (e.g. Rx frame) originated from uCode,
1531 * there is no command buffer to reclaim.
1532 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1533 * but apparently a few don't get set; catch them here. */
1534 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1535 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1536 (pkt->hdr.cmd != REPLY_TX);
1538 /* Based on type of command response or notification,
1539 * handle those that need handling via function in
1540 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1541 if (priv->rx_handlers[pkt->hdr.cmd]) {
1542 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1543 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1544 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1545 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1547 /* No handling needed */
1548 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1549 "r %d i %d No handler needed for %s, 0x%02x\n",
1550 r, i, get_cmd_string(pkt->hdr.cmd),
1555 /* Invoke any callbacks, transfer the skb to caller, and
1556 * fire off the (possibly) blocking iwl_send_cmd()
1557 * as we reclaim the driver command queue */
1558 if (rxb && rxb->skb)
1559 iwl_tx_cmd_complete(priv, rxb);
1561 IWL_WARN(priv, "Claim null rxb?\n");
1564 /* For now we just don't re-use anything. We can tweak this
1565 * later to try and re-use notification packets and SKBs that
1566 * fail to Rx correctly */
1567 if (rxb->skb != NULL) {
1568 priv->alloc_rxb_skb--;
1569 dev_kfree_skb_any(rxb->skb);
1573 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1574 priv->hw_params.rx_buf_size,
1575 PCI_DMA_FROMDEVICE);
1576 spin_lock_irqsave(&rxq->lock, flags);
1577 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1578 spin_unlock_irqrestore(&rxq->lock, flags);
1579 i = (i + 1) & RX_QUEUE_MASK;
1580 /* If there are a lot of unused frames,
1581 * restock the Rx queue so ucode won't assert. */
1586 __iwl3945_rx_replenish(priv);
1592 /* Backtrack one entry */
1594 iwl3945_rx_queue_restock(priv);
1597 /* call this function to flush any scheduled tasklet */
1598 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1600 /* wait to make sure we flush pending tasklet*/
1601 synchronize_irq(priv->pci_dev->irq);
1602 tasklet_kill(&priv->irq_tasklet);
1605 static const char *desc_lookup(int i)
1613 return "BAD_CHECKSUM";
1615 return "NMI_INTERRUPT";
1619 return "FATAL_ERROR";
1625 #define ERROR_START_OFFSET (1 * sizeof(u32))
1626 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1628 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1631 u32 desc, time, count, base, data1;
1632 u32 blink1, blink2, ilink1, ilink2;
1635 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1637 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1638 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1642 rc = iwl_grab_nic_access(priv);
1644 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1648 count = iwl_read_targ_mem(priv, base);
1650 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1651 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1652 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1653 priv->status, count);
1656 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1657 "ilink1 nmiPC Line\n");
1658 for (i = ERROR_START_OFFSET;
1659 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1660 i += ERROR_ELEM_SIZE) {
1661 desc = iwl_read_targ_mem(priv, base + i);
1663 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1665 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1667 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1669 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1671 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1673 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1676 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1677 desc_lookup(desc), desc, time, blink1, blink2,
1678 ilink1, ilink2, data1);
1681 iwl_release_nic_access(priv);
1685 #define EVENT_START_OFFSET (6 * sizeof(u32))
1688 * iwl3945_print_event_log - Dump error event log to syslog
1690 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1692 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1693 u32 num_events, u32 mode)
1696 u32 base; /* SRAM byte address of event log header */
1697 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1698 u32 ptr; /* SRAM byte address of log data */
1699 u32 ev, time, data; /* event log data */
1701 if (num_events == 0)
1704 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1707 event_size = 2 * sizeof(u32);
1709 event_size = 3 * sizeof(u32);
1711 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1713 /* "time" is actually "data" for mode 0 (no timestamp).
1714 * place event id # at far right for easier visual parsing. */
1715 for (i = 0; i < num_events; i++) {
1716 ev = iwl_read_targ_mem(priv, ptr);
1718 time = iwl_read_targ_mem(priv, ptr);
1722 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1724 data = iwl_read_targ_mem(priv, ptr);
1726 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1731 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1734 u32 base; /* SRAM byte address of event log header */
1735 u32 capacity; /* event log capacity in # entries */
1736 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1737 u32 num_wraps; /* # times uCode wrapped to top of log */
1738 u32 next_entry; /* index of next entry to be written by uCode */
1739 u32 size; /* # entries that we'll print */
1741 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1742 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1743 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1747 rc = iwl_grab_nic_access(priv);
1749 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1753 /* event log header */
1754 capacity = iwl_read_targ_mem(priv, base);
1755 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1756 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1757 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1759 size = num_wraps ? capacity : next_entry;
1761 /* bail out if nothing in log */
1763 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1764 iwl_release_nic_access(priv);
1768 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1771 /* if uCode has wrapped back to top of log, start at the oldest entry,
1772 * i.e the next one that uCode would fill. */
1774 iwl3945_print_event_log(priv, next_entry,
1775 capacity - next_entry, mode);
1777 /* (then/else) start at top of log */
1778 iwl3945_print_event_log(priv, 0, next_entry, mode);
1780 iwl_release_nic_access(priv);
1783 static void iwl3945_error_recovery(struct iwl_priv *priv)
1785 unsigned long flags;
1787 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1788 sizeof(priv->staging_rxon));
1789 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1790 iwlcore_commit_rxon(priv);
1792 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 1, 0, NULL);
1794 spin_lock_irqsave(&priv->lock, flags);
1795 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1796 priv->error_recovering = 0;
1797 spin_unlock_irqrestore(&priv->lock, flags);
1800 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1802 u32 inta, handled = 0;
1804 unsigned long flags;
1805 #ifdef CONFIG_IWLWIFI_DEBUG
1809 spin_lock_irqsave(&priv->lock, flags);
1811 /* Ack/clear/reset pending uCode interrupts.
1812 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1813 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1814 inta = iwl_read32(priv, CSR_INT);
1815 iwl_write32(priv, CSR_INT, inta);
1817 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1818 * Any new interrupts that happen after this, either while we're
1819 * in this tasklet, or later, will show up in next ISR/tasklet. */
1820 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1821 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1823 #ifdef CONFIG_IWLWIFI_DEBUG
1824 if (priv->debug_level & IWL_DL_ISR) {
1825 /* just for debug */
1826 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1827 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1828 inta, inta_mask, inta_fh);
1832 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1833 * atomic, make sure that inta covers all the interrupts that
1834 * we've discovered, even if FH interrupt came in just after
1835 * reading CSR_INT. */
1836 if (inta_fh & CSR39_FH_INT_RX_MASK)
1837 inta |= CSR_INT_BIT_FH_RX;
1838 if (inta_fh & CSR39_FH_INT_TX_MASK)
1839 inta |= CSR_INT_BIT_FH_TX;
1841 /* Now service all interrupt bits discovered above. */
1842 if (inta & CSR_INT_BIT_HW_ERR) {
1843 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1845 /* Tell the device to stop sending interrupts */
1846 iwl_disable_interrupts(priv);
1848 iwl_irq_handle_error(priv);
1850 handled |= CSR_INT_BIT_HW_ERR;
1852 spin_unlock_irqrestore(&priv->lock, flags);
1857 #ifdef CONFIG_IWLWIFI_DEBUG
1858 if (priv->debug_level & (IWL_DL_ISR)) {
1859 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1860 if (inta & CSR_INT_BIT_SCD)
1861 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1862 "the frame/frames.\n");
1864 /* Alive notification via Rx interrupt will do the real work */
1865 if (inta & CSR_INT_BIT_ALIVE)
1866 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1869 /* Safely ignore these bits for debug checks below */
1870 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1872 /* Error detected by uCode */
1873 if (inta & CSR_INT_BIT_SW_ERR) {
1874 IWL_ERR(priv, "Microcode SW error detected. "
1875 "Restarting 0x%X.\n", inta);
1876 iwl_irq_handle_error(priv);
1877 handled |= CSR_INT_BIT_SW_ERR;
1880 /* uCode wakes up after power-down sleep */
1881 if (inta & CSR_INT_BIT_WAKEUP) {
1882 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1883 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1884 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1885 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1886 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1887 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1888 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1889 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1891 handled |= CSR_INT_BIT_WAKEUP;
1894 /* All uCode command responses, including Tx command responses,
1895 * Rx "responses" (frame-received notification), and other
1896 * notifications from uCode come through here*/
1897 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1898 iwl3945_rx_handle(priv);
1899 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1902 if (inta & CSR_INT_BIT_FH_TX) {
1903 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1905 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1906 if (!iwl_grab_nic_access(priv)) {
1907 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1908 (FH39_SRVC_CHNL), 0x0);
1909 iwl_release_nic_access(priv);
1911 handled |= CSR_INT_BIT_FH_TX;
1914 if (inta & ~handled)
1915 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1917 if (inta & ~CSR_INI_SET_MASK) {
1918 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1919 inta & ~CSR_INI_SET_MASK);
1920 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1923 /* Re-enable all interrupts */
1924 /* only Re-enable if disabled by irq */
1925 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1926 iwl_enable_interrupts(priv);
1928 #ifdef CONFIG_IWLWIFI_DEBUG
1929 if (priv->debug_level & (IWL_DL_ISR)) {
1930 inta = iwl_read32(priv, CSR_INT);
1931 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1932 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1933 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1934 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1937 spin_unlock_irqrestore(&priv->lock, flags);
1940 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1941 enum ieee80211_band band,
1942 u8 is_active, u8 n_probes,
1943 struct iwl3945_scan_channel *scan_ch)
1945 const struct ieee80211_channel *channels = NULL;
1946 const struct ieee80211_supported_band *sband;
1947 const struct iwl_channel_info *ch_info;
1948 u16 passive_dwell = 0;
1949 u16 active_dwell = 0;
1952 sband = iwl_get_hw_mode(priv, band);
1956 channels = sband->channels;
1958 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1959 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1961 if (passive_dwell <= active_dwell)
1962 passive_dwell = active_dwell + 1;
1964 for (i = 0, added = 0; i < sband->n_channels; i++) {
1965 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
1968 scan_ch->channel = channels[i].hw_value;
1970 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1971 if (!is_channel_valid(ch_info)) {
1972 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1977 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1978 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1979 /* If passive , set up for auto-switch
1980 * and use long active_dwell time.
1982 if (!is_active || is_channel_passive(ch_info) ||
1983 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1984 scan_ch->type = 0; /* passive */
1985 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1986 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1988 scan_ch->type = 1; /* active */
1991 /* Set direct probe bits. These may be used both for active
1992 * scan channels (probes gets sent right away),
1993 * or for passive channels (probes get se sent only after
1994 * hearing clear Rx packet).*/
1995 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1997 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1999 /* uCode v1 does not allow setting direct probe bits on
2000 * passive channel. */
2001 if ((scan_ch->type & 1) && n_probes)
2002 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2005 /* Set txpower levels to defaults */
2006 scan_ch->tpc.dsp_atten = 110;
2007 /* scan_pwr_info->tpc.dsp_atten; */
2009 /*scan_pwr_info->tpc.tx_gain; */
2010 if (band == IEEE80211_BAND_5GHZ)
2011 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2013 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2014 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2016 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2020 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2022 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2023 (scan_ch->type & 1) ?
2024 active_dwell : passive_dwell);
2030 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2034 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2035 struct ieee80211_rate *rates)
2039 for (i = 0; i < IWL_RATE_COUNT; i++) {
2040 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2041 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2042 rates[i].hw_value_short = i;
2044 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2046 * If CCK != 1M then set short preamble rate flag.
2048 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2049 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2054 /******************************************************************************
2056 * uCode download functions
2058 ******************************************************************************/
2060 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2062 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2063 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2064 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2065 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2066 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2067 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2071 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2072 * looking at all data.
2074 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2081 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2083 rc = iwl_grab_nic_access(priv);
2087 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2088 IWL39_RTC_INST_LOWER_BOUND);
2091 for (; len > 0; len -= sizeof(u32), image++) {
2092 /* read data comes through single port, auto-incr addr */
2093 /* NOTE: Use the debugless read so we don't flood kernel log
2094 * if IWL_DL_IO is set */
2095 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2096 if (val != le32_to_cpu(*image)) {
2097 IWL_ERR(priv, "uCode INST section is invalid at "
2098 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2099 save_len - len, val, le32_to_cpu(*image));
2107 iwl_release_nic_access(priv);
2110 IWL_DEBUG_INFO(priv,
2111 "ucode image in INSTRUCTION memory is good\n");
2118 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2119 * using sample data 100 bytes apart. If these sample points are good,
2120 * it's a pretty good bet that everything between them is good, too.
2122 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2129 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2131 rc = iwl_grab_nic_access(priv);
2135 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2136 /* read data comes through single port, auto-incr addr */
2137 /* NOTE: Use the debugless read so we don't flood kernel log
2138 * if IWL_DL_IO is set */
2139 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2140 i + IWL39_RTC_INST_LOWER_BOUND);
2141 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2142 if (val != le32_to_cpu(*image)) {
2143 #if 0 /* Enable this if you want to see details */
2144 IWL_ERR(priv, "uCode INST section is invalid at "
2145 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2155 iwl_release_nic_access(priv);
2162 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2163 * and verify its contents
2165 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2172 image = (__le32 *)priv->ucode_boot.v_addr;
2173 len = priv->ucode_boot.len;
2174 rc = iwl3945_verify_inst_sparse(priv, image, len);
2176 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2180 /* Try initialize */
2181 image = (__le32 *)priv->ucode_init.v_addr;
2182 len = priv->ucode_init.len;
2183 rc = iwl3945_verify_inst_sparse(priv, image, len);
2185 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2189 /* Try runtime/protocol */
2190 image = (__le32 *)priv->ucode_code.v_addr;
2191 len = priv->ucode_code.len;
2192 rc = iwl3945_verify_inst_sparse(priv, image, len);
2194 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2198 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2200 /* Since nothing seems to match, show first several data entries in
2201 * instruction SRAM, so maybe visual inspection will give a clue.
2202 * Selection of bootstrap image (vs. other images) is arbitrary. */
2203 image = (__le32 *)priv->ucode_boot.v_addr;
2204 len = priv->ucode_boot.len;
2205 rc = iwl3945_verify_inst_full(priv, image, len);
2210 static void iwl3945_nic_start(struct iwl_priv *priv)
2212 /* Remove all resets to allow NIC to operate */
2213 iwl_write32(priv, CSR_RESET, 0);
2217 * iwl3945_read_ucode - Read uCode images from disk file.
2219 * Copy into buffers for card to fetch via bus-mastering
2221 static int iwl3945_read_ucode(struct iwl_priv *priv)
2223 struct iwl_ucode *ucode;
2224 int ret = -EINVAL, index;
2225 const struct firmware *ucode_raw;
2226 /* firmware file name contains uCode/driver compatibility version */
2227 const char *name_pre = priv->cfg->fw_name_pre;
2228 const unsigned int api_max = priv->cfg->ucode_api_max;
2229 const unsigned int api_min = priv->cfg->ucode_api_min;
2233 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2235 /* Ask kernel firmware_class module to get the boot firmware off disk.
2236 * request_firmware() is synchronous, file is in memory on return. */
2237 for (index = api_max; index >= api_min; index--) {
2238 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2239 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2241 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2248 if (index < api_max)
2249 IWL_ERR(priv, "Loaded firmware %s, "
2250 "which is deprecated. "
2251 " Please use API v%u instead.\n",
2253 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2254 "(%zd bytes) from disk\n",
2255 buf, ucode_raw->size);
2263 /* Make sure that we got at least our header! */
2264 if (ucode_raw->size < sizeof(*ucode)) {
2265 IWL_ERR(priv, "File size way too small!\n");
2270 /* Data from ucode file: header followed by uCode images */
2271 ucode = (void *)ucode_raw->data;
2273 priv->ucode_ver = le32_to_cpu(ucode->ver);
2274 api_ver = IWL_UCODE_API(priv->ucode_ver);
2275 inst_size = le32_to_cpu(ucode->inst_size);
2276 data_size = le32_to_cpu(ucode->data_size);
2277 init_size = le32_to_cpu(ucode->init_size);
2278 init_data_size = le32_to_cpu(ucode->init_data_size);
2279 boot_size = le32_to_cpu(ucode->boot_size);
2281 /* api_ver should match the api version forming part of the
2282 * firmware filename ... but we don't check for that and only rely
2283 * on the API version read from firmware header from here on forward */
2285 if (api_ver < api_min || api_ver > api_max) {
2286 IWL_ERR(priv, "Driver unable to support your firmware API. "
2287 "Driver supports v%u, firmware is v%u.\n",
2289 priv->ucode_ver = 0;
2293 if (api_ver != api_max)
2294 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2295 "got %u. New firmware can be obtained "
2296 "from http://www.intellinuxwireless.org.\n",
2299 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2300 IWL_UCODE_MAJOR(priv->ucode_ver),
2301 IWL_UCODE_MINOR(priv->ucode_ver),
2302 IWL_UCODE_API(priv->ucode_ver),
2303 IWL_UCODE_SERIAL(priv->ucode_ver));
2305 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2307 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2309 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2311 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2313 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2315 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2319 /* Verify size of file vs. image size info in file's header */
2320 if (ucode_raw->size < sizeof(*ucode) +
2321 inst_size + data_size + init_size +
2322 init_data_size + boot_size) {
2324 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2330 /* Verify that uCode images will fit in card's SRAM */
2331 if (inst_size > IWL39_MAX_INST_SIZE) {
2332 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2338 if (data_size > IWL39_MAX_DATA_SIZE) {
2339 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2344 if (init_size > IWL39_MAX_INST_SIZE) {
2345 IWL_DEBUG_INFO(priv,
2346 "uCode init instr len %d too large to fit in\n",
2351 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2352 IWL_DEBUG_INFO(priv,
2353 "uCode init data len %d too large to fit in\n",
2358 if (boot_size > IWL39_MAX_BSM_SIZE) {
2359 IWL_DEBUG_INFO(priv,
2360 "uCode boot instr len %d too large to fit in\n",
2366 /* Allocate ucode buffers for card's bus-master loading ... */
2368 /* Runtime instructions and 2 copies of data:
2369 * 1) unmodified from disk
2370 * 2) backup cache for save/restore during power-downs */
2371 priv->ucode_code.len = inst_size;
2372 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2374 priv->ucode_data.len = data_size;
2375 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2377 priv->ucode_data_backup.len = data_size;
2378 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2380 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2381 !priv->ucode_data_backup.v_addr)
2384 /* Initialization instructions and data */
2385 if (init_size && init_data_size) {
2386 priv->ucode_init.len = init_size;
2387 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2389 priv->ucode_init_data.len = init_data_size;
2390 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2392 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2396 /* Bootstrap (instructions only, no data) */
2398 priv->ucode_boot.len = boot_size;
2399 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2401 if (!priv->ucode_boot.v_addr)
2405 /* Copy images into buffers for card's bus-master reads ... */
2407 /* Runtime instructions (first block of data in file) */
2408 src = &ucode->data[0];
2409 len = priv->ucode_code.len;
2410 IWL_DEBUG_INFO(priv,
2411 "Copying (but not loading) uCode instr len %zd\n", len);
2412 memcpy(priv->ucode_code.v_addr, src, len);
2413 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2414 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2416 /* Runtime data (2nd block)
2417 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2418 src = &ucode->data[inst_size];
2419 len = priv->ucode_data.len;
2420 IWL_DEBUG_INFO(priv,
2421 "Copying (but not loading) uCode data len %zd\n", len);
2422 memcpy(priv->ucode_data.v_addr, src, len);
2423 memcpy(priv->ucode_data_backup.v_addr, src, len);
2425 /* Initialization instructions (3rd block) */
2427 src = &ucode->data[inst_size + data_size];
2428 len = priv->ucode_init.len;
2429 IWL_DEBUG_INFO(priv,
2430 "Copying (but not loading) init instr len %zd\n", len);
2431 memcpy(priv->ucode_init.v_addr, src, len);
2434 /* Initialization data (4th block) */
2435 if (init_data_size) {
2436 src = &ucode->data[inst_size + data_size + init_size];
2437 len = priv->ucode_init_data.len;
2438 IWL_DEBUG_INFO(priv,
2439 "Copying (but not loading) init data len %zd\n", len);
2440 memcpy(priv->ucode_init_data.v_addr, src, len);
2443 /* Bootstrap instructions (5th block) */
2444 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2445 len = priv->ucode_boot.len;
2446 IWL_DEBUG_INFO(priv,
2447 "Copying (but not loading) boot instr len %zd\n", len);
2448 memcpy(priv->ucode_boot.v_addr, src, len);
2450 /* We have our copies now, allow OS release its copies */
2451 release_firmware(ucode_raw);
2455 IWL_ERR(priv, "failed to allocate pci memory\n");
2457 iwl3945_dealloc_ucode_pci(priv);
2460 release_firmware(ucode_raw);
2468 * iwl3945_set_ucode_ptrs - Set uCode address location
2470 * Tell initialization uCode where to find runtime uCode.
2472 * BSM registers initially contain pointers to initialization uCode.
2473 * We need to replace them to load runtime uCode inst and data,
2474 * and to save runtime data when powering down.
2476 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2481 unsigned long flags;
2483 /* bits 31:0 for 3945 */
2484 pinst = priv->ucode_code.p_addr;
2485 pdata = priv->ucode_data_backup.p_addr;
2487 spin_lock_irqsave(&priv->lock, flags);
2488 rc = iwl_grab_nic_access(priv);
2490 spin_unlock_irqrestore(&priv->lock, flags);
2494 /* Tell bootstrap uCode where to find image to load */
2495 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2496 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2497 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2498 priv->ucode_data.len);
2500 /* Inst byte count must be last to set up, bit 31 signals uCode
2501 * that all new ptr/size info is in place */
2502 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2503 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2505 iwl_release_nic_access(priv);
2507 spin_unlock_irqrestore(&priv->lock, flags);
2509 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2515 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2517 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2519 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2521 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2523 /* Check alive response for "valid" sign from uCode */
2524 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2525 /* We had an error bringing up the hardware, so take it
2526 * all the way back down so we can try again */
2527 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2531 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2532 * This is a paranoid check, because we would not have gotten the
2533 * "initialize" alive if code weren't properly loaded. */
2534 if (iwl3945_verify_ucode(priv)) {
2535 /* Runtime instruction load was bad;
2536 * take it all the way back down so we can try again */
2537 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2541 /* Send pointers to protocol/runtime uCode image ... init code will
2542 * load and launch runtime uCode, which will send us another "Alive"
2544 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2545 if (iwl3945_set_ucode_ptrs(priv)) {
2546 /* Runtime instruction load won't happen;
2547 * take it all the way back down so we can try again */
2548 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2554 queue_work(priv->workqueue, &priv->restart);
2558 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2559 * from protocol/runtime uCode (initialization uCode's
2560 * Alive gets handled by iwl3945_init_alive_start()).
2562 static void iwl3945_alive_start(struct iwl_priv *priv)
2565 int thermal_spin = 0;
2568 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2570 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2571 /* We had an error bringing up the hardware, so take it
2572 * all the way back down so we can try again */
2573 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2577 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2578 * This is a paranoid check, because we would not have gotten the
2579 * "runtime" alive if code weren't properly loaded. */
2580 if (iwl3945_verify_ucode(priv)) {
2581 /* Runtime instruction load was bad;
2582 * take it all the way back down so we can try again */
2583 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2587 priv->cfg->ops->smgmt->clear_station_table(priv);
2589 rc = iwl_grab_nic_access(priv);
2591 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2595 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2596 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2597 iwl_release_nic_access(priv);
2600 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2601 /* if RFKILL is not on, then wait for thermal
2602 * sensor in adapter to kick in */
2603 while (iwl3945_hw_get_temperature(priv) == 0) {
2609 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2612 set_bit(STATUS_RF_KILL_HW, &priv->status);
2614 /* After the ALIVE response, we can send commands to 3945 uCode */
2615 set_bit(STATUS_ALIVE, &priv->status);
2617 /* Clear out the uCode error bit if it is set */
2618 clear_bit(STATUS_FW_ERROR, &priv->status);
2620 if (iwl_is_rfkill(priv))
2623 ieee80211_wake_queues(priv->hw);
2625 priv->active_rate = priv->rates_mask;
2626 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2628 iwl_power_update_mode(priv, false);
2630 if (iwl_is_associated(priv)) {
2631 struct iwl3945_rxon_cmd *active_rxon =
2632 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2634 memcpy(&priv->staging_rxon, &priv->active_rxon,
2635 sizeof(priv->staging_rxon));
2636 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2638 /* Initialize our rx_config data */
2639 iwl_connection_init_rx_config(priv, priv->iw_mode);
2642 /* Configure Bluetooth device coexistence support */
2643 iwl_send_bt_config(priv);
2645 /* Configure the adapter for unassociated operation */
2646 iwlcore_commit_rxon(priv);
2648 iwl3945_reg_txpower_periodic(priv);
2650 iwl3945_led_register(priv);
2652 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2653 set_bit(STATUS_READY, &priv->status);
2654 wake_up_interruptible(&priv->wait_command_queue);
2656 if (priv->error_recovering)
2657 iwl3945_error_recovery(priv);
2659 /* reassociate for ADHOC mode */
2660 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2661 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2664 iwl_mac_beacon_update(priv->hw, beacon);
2667 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2668 iwl_set_mode(priv, priv->iw_mode);
2673 queue_work(priv->workqueue, &priv->restart);
2676 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2678 static void __iwl3945_down(struct iwl_priv *priv)
2680 unsigned long flags;
2681 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2682 struct ieee80211_conf *conf = NULL;
2684 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2686 conf = ieee80211_get_hw_conf(priv->hw);
2689 set_bit(STATUS_EXIT_PENDING, &priv->status);
2691 iwl3945_led_unregister(priv);
2692 priv->cfg->ops->smgmt->clear_station_table(priv);
2694 /* Unblock any waiting calls */
2695 wake_up_interruptible_all(&priv->wait_command_queue);
2697 /* Wipe out the EXIT_PENDING status bit if we are not actually
2698 * exiting the module */
2700 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2702 /* stop and reset the on-board processor */
2703 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2705 /* tell the device to stop sending interrupts */
2706 spin_lock_irqsave(&priv->lock, flags);
2707 iwl_disable_interrupts(priv);
2708 spin_unlock_irqrestore(&priv->lock, flags);
2709 iwl_synchronize_irq(priv);
2711 if (priv->mac80211_registered)
2712 ieee80211_stop_queues(priv->hw);
2714 /* If we have not previously called iwl3945_init() then
2715 * clear all bits but the RF Kill bits and return */
2716 if (!iwl_is_init(priv)) {
2717 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2719 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2721 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2722 STATUS_GEO_CONFIGURED |
2723 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2724 STATUS_EXIT_PENDING;
2728 /* ...otherwise clear out all the status bits but the RF Kill
2729 * bits and continue taking the NIC down. */
2730 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2732 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2734 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2735 STATUS_GEO_CONFIGURED |
2736 test_bit(STATUS_FW_ERROR, &priv->status) <<
2738 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2739 STATUS_EXIT_PENDING;
2741 priv->cfg->ops->lib->apm_ops.reset(priv);
2742 spin_lock_irqsave(&priv->lock, flags);
2743 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2744 spin_unlock_irqrestore(&priv->lock, flags);
2746 iwl3945_hw_txq_ctx_stop(priv);
2747 iwl3945_hw_rxq_stop(priv);
2749 spin_lock_irqsave(&priv->lock, flags);
2750 if (!iwl_grab_nic_access(priv)) {
2751 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2752 APMG_CLK_VAL_DMA_CLK_RQT);
2753 iwl_release_nic_access(priv);
2755 spin_unlock_irqrestore(&priv->lock, flags);
2760 priv->cfg->ops->lib->apm_ops.stop(priv);
2762 priv->cfg->ops->lib->apm_ops.reset(priv);
2765 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2767 if (priv->ibss_beacon)
2768 dev_kfree_skb(priv->ibss_beacon);
2769 priv->ibss_beacon = NULL;
2771 /* clear out any free frames */
2772 iwl3945_clear_free_frames(priv);
2775 static void iwl3945_down(struct iwl_priv *priv)
2777 mutex_lock(&priv->mutex);
2778 __iwl3945_down(priv);
2779 mutex_unlock(&priv->mutex);
2781 iwl3945_cancel_deferred_work(priv);
2784 #define MAX_HW_RESTARTS 5
2786 static int __iwl3945_up(struct iwl_priv *priv)
2790 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2791 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2795 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2796 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2801 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2802 IWL_ERR(priv, "ucode not available for device bring up\n");
2806 /* If platform's RF_KILL switch is NOT set to KILL */
2807 if (iwl_read32(priv, CSR_GP_CNTRL) &
2808 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2809 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2811 set_bit(STATUS_RF_KILL_HW, &priv->status);
2812 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2816 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2818 rc = iwl3945_hw_nic_init(priv);
2820 IWL_ERR(priv, "Unable to int nic\n");
2824 /* make sure rfkill handshake bits are cleared */
2825 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2826 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2827 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2829 /* clear (again), then enable host interrupts */
2830 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2831 iwl_enable_interrupts(priv);
2833 /* really make sure rfkill handshake bits are cleared */
2834 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2835 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2837 /* Copy original ucode data image from disk into backup cache.
2838 * This will be used to initialize the on-board processor's
2839 * data SRAM for a clean start when the runtime program first loads. */
2840 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2841 priv->ucode_data.len);
2843 /* We return success when we resume from suspend and rf_kill is on. */
2844 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2847 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2849 priv->cfg->ops->smgmt->clear_station_table(priv);
2851 /* load bootstrap state machine,
2852 * load bootstrap program into processor's memory,
2853 * prepare to load the "initialize" uCode */
2854 priv->cfg->ops->lib->load_ucode(priv);
2858 "Unable to set up bootstrap uCode: %d\n", rc);
2862 /* start card; "initialize" will load runtime ucode */
2863 iwl3945_nic_start(priv);
2865 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2870 set_bit(STATUS_EXIT_PENDING, &priv->status);
2871 __iwl3945_down(priv);
2872 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2874 /* tried to restart and config the device for as long as our
2875 * patience could withstand */
2876 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2881 /*****************************************************************************
2883 * Workqueue callbacks
2885 *****************************************************************************/
2887 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2889 struct iwl_priv *priv =
2890 container_of(data, struct iwl_priv, init_alive_start.work);
2892 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2895 mutex_lock(&priv->mutex);
2896 iwl3945_init_alive_start(priv);
2897 mutex_unlock(&priv->mutex);
2900 static void iwl3945_bg_alive_start(struct work_struct *data)
2902 struct iwl_priv *priv =
2903 container_of(data, struct iwl_priv, alive_start.work);
2905 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2908 mutex_lock(&priv->mutex);
2909 iwl3945_alive_start(priv);
2910 mutex_unlock(&priv->mutex);
2913 static void iwl3945_rfkill_poll(struct work_struct *data)
2915 struct iwl_priv *priv =
2916 container_of(data, struct iwl_priv, rfkill_poll.work);
2917 unsigned long status = priv->status;
2919 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2920 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2922 set_bit(STATUS_RF_KILL_HW, &priv->status);
2924 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2925 queue_work(priv->workqueue, &priv->rf_kill);
2927 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2928 round_jiffies_relative(2 * HZ));
2932 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2933 static void iwl3945_bg_request_scan(struct work_struct *data)
2935 struct iwl_priv *priv =
2936 container_of(data, struct iwl_priv, request_scan);
2937 struct iwl_host_cmd cmd = {
2938 .id = REPLY_SCAN_CMD,
2939 .len = sizeof(struct iwl3945_scan_cmd),
2940 .meta.flags = CMD_SIZE_HUGE,
2943 struct iwl3945_scan_cmd *scan;
2944 struct ieee80211_conf *conf = NULL;
2946 enum ieee80211_band band;
2947 DECLARE_SSID_BUF(ssid);
2949 conf = ieee80211_get_hw_conf(priv->hw);
2951 mutex_lock(&priv->mutex);
2953 if (!iwl_is_ready(priv)) {
2954 IWL_WARN(priv, "request scan called when driver not ready.\n");
2958 /* Make sure the scan wasn't canceled before this queued work
2959 * was given the chance to run... */
2960 if (!test_bit(STATUS_SCANNING, &priv->status))
2963 /* This should never be called or scheduled if there is currently
2964 * a scan active in the hardware. */
2965 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2966 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2967 "Ignoring second request.\n");
2972 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2973 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2977 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2979 "Scan request while abort pending. Queuing.\n");
2983 if (iwl_is_rfkill(priv)) {
2984 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2988 if (!test_bit(STATUS_READY, &priv->status)) {
2990 "Scan request while uninitialized. Queuing.\n");
2994 if (!priv->scan_bands) {
2995 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3000 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3001 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3008 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3010 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3011 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3013 if (iwl_is_associated(priv)) {
3016 u32 suspend_time = 100;
3017 u32 scan_suspend_time = 100;
3018 unsigned long flags;
3020 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3022 spin_lock_irqsave(&priv->lock, flags);
3023 interval = priv->beacon_int;
3024 spin_unlock_irqrestore(&priv->lock, flags);
3026 scan->suspend_time = 0;
3027 scan->max_out_time = cpu_to_le32(200 * 1024);
3029 interval = suspend_time;
3031 * suspend time format:
3032 * 0-19: beacon interval in usec (time before exec.)
3034 * 24-31: number of beacons (suspend between channels)
3037 extra = (suspend_time / interval) << 24;
3038 scan_suspend_time = 0xFF0FFFFF &
3039 (extra | ((suspend_time % interval) * 1024));
3041 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3042 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3043 scan_suspend_time, interval);
3046 /* We should add the ability for user to lock to PASSIVE ONLY */
3047 if (priv->one_direct_scan) {
3048 IWL_DEBUG_SCAN(priv, "Kicking off one direct scan for '%s'\n",
3049 print_ssid(ssid, priv->direct_ssid,
3050 priv->direct_ssid_len));
3051 scan->direct_scan[0].id = WLAN_EID_SSID;
3052 scan->direct_scan[0].len = priv->direct_ssid_len;
3053 memcpy(scan->direct_scan[0].ssid,
3054 priv->direct_ssid, priv->direct_ssid_len);
3057 IWL_DEBUG_SCAN(priv, "Kicking off one indirect scan.\n");
3059 /* We don't build a direct scan probe request; the uCode will do
3060 * that based on the direct_mask added to each channel entry */
3061 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3062 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3063 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3065 /* flags + rate selection */
3067 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3068 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3069 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3070 scan->good_CRC_th = 0;
3071 band = IEEE80211_BAND_2GHZ;
3072 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3073 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3074 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3075 band = IEEE80211_BAND_5GHZ;
3077 IWL_WARN(priv, "Invalid scan band count\n");
3081 scan->tx_cmd.len = cpu_to_le16(
3082 iwl_fill_probe_req(priv, band,
3083 (struct ieee80211_mgmt *)scan->data,
3084 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3086 /* select Rx antennas */
3087 scan->flags |= iwl3945_get_antenna_flags(priv);
3089 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3090 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3092 scan->channel_count =
3093 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3095 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3097 if (scan->channel_count == 0) {
3098 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3102 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3103 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3105 scan->len = cpu_to_le16(cmd.len);
3107 set_bit(STATUS_SCAN_HW, &priv->status);
3108 rc = iwl_send_cmd_sync(priv, &cmd);
3112 queue_delayed_work(priv->workqueue, &priv->scan_check,
3113 IWL_SCAN_CHECK_WATCHDOG);
3115 mutex_unlock(&priv->mutex);
3119 /* can not perform scan make sure we clear scanning
3120 * bits from status so next scan request can be performed.
3121 * if we dont clear scanning status bit here all next scan
3124 clear_bit(STATUS_SCAN_HW, &priv->status);
3125 clear_bit(STATUS_SCANNING, &priv->status);
3127 /* inform mac80211 scan aborted */
3128 queue_work(priv->workqueue, &priv->scan_completed);
3129 mutex_unlock(&priv->mutex);
3132 static void iwl3945_bg_up(struct work_struct *data)
3134 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3136 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3139 mutex_lock(&priv->mutex);
3141 mutex_unlock(&priv->mutex);
3142 iwl_rfkill_set_hw_state(priv);
3145 static void iwl3945_bg_restart(struct work_struct *data)
3147 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3149 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3153 queue_work(priv->workqueue, &priv->up);
3156 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3158 struct iwl_priv *priv =
3159 container_of(data, struct iwl_priv, rx_replenish);
3161 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3164 mutex_lock(&priv->mutex);
3165 iwl3945_rx_replenish(priv);
3166 mutex_unlock(&priv->mutex);
3169 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
3171 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3173 void iwl3945_post_associate(struct iwl_priv *priv)
3176 struct ieee80211_conf *conf = NULL;
3178 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3179 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3184 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3185 priv->assoc_id, priv->active_rxon.bssid_addr);
3187 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3190 if (!priv->vif || !priv->is_open)
3193 iwl_scan_cancel_timeout(priv, 200);
3195 conf = ieee80211_get_hw_conf(priv->hw);
3197 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3198 iwlcore_commit_rxon(priv);
3200 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3201 iwl3945_setup_rxon_timing(priv);
3202 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3203 sizeof(priv->rxon_timing), &priv->rxon_timing);
3205 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3206 "Attempting to continue.\n");
3208 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3210 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3212 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3213 priv->assoc_id, priv->beacon_int);
3215 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3216 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3218 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3220 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3221 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3222 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3224 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3226 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3227 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3231 iwlcore_commit_rxon(priv);
3233 switch (priv->iw_mode) {
3234 case NL80211_IFTYPE_STATION:
3235 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3238 case NL80211_IFTYPE_ADHOC:
3241 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3242 iwl3945_sync_sta(priv, IWL_STA_ID,
3243 (priv->band == IEEE80211_BAND_5GHZ) ?
3244 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3246 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3247 iwl3945_send_beacon_cmd(priv);
3252 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3253 __func__, priv->iw_mode);
3257 iwl_activate_qos(priv, 0);
3259 /* we have just associated, don't start scan too early */
3260 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3263 /*****************************************************************************
3265 * mac80211 entry point functions
3267 *****************************************************************************/
3269 #define UCODE_READY_TIMEOUT (2 * HZ)
3271 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3273 struct iwl_priv *priv = hw->priv;
3276 IWL_DEBUG_MAC80211(priv, "enter\n");
3278 /* we should be verifying the device is ready to be opened */
3279 mutex_lock(&priv->mutex);
3281 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3282 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3283 * ucode filename and max sizes are card-specific. */
3285 if (!priv->ucode_code.len) {
3286 ret = iwl3945_read_ucode(priv);
3288 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3289 mutex_unlock(&priv->mutex);
3290 goto out_release_irq;
3294 ret = __iwl3945_up(priv);
3296 mutex_unlock(&priv->mutex);
3298 iwl_rfkill_set_hw_state(priv);
3301 goto out_release_irq;
3303 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3305 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3306 * mac80211 will not be run successfully. */
3307 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3308 test_bit(STATUS_READY, &priv->status),
3309 UCODE_READY_TIMEOUT);
3311 if (!test_bit(STATUS_READY, &priv->status)) {
3313 "Wait for START_ALIVE timeout after %dms.\n",
3314 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3316 goto out_release_irq;
3320 /* ucode is running and will send rfkill notifications,
3321 * no need to poll the killswitch state anymore */
3322 cancel_delayed_work(&priv->rfkill_poll);
3325 IWL_DEBUG_MAC80211(priv, "leave\n");
3330 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3334 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3336 struct iwl_priv *priv = hw->priv;
3338 IWL_DEBUG_MAC80211(priv, "enter\n");
3340 if (!priv->is_open) {
3341 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3347 if (iwl_is_ready_rf(priv)) {
3348 /* stop mac, cancel any scan request and clear
3349 * RXON_FILTER_ASSOC_MSK BIT
3351 mutex_lock(&priv->mutex);
3352 iwl_scan_cancel_timeout(priv, 100);
3353 mutex_unlock(&priv->mutex);
3358 flush_workqueue(priv->workqueue);
3360 /* start polling the killswitch state again */
3361 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3362 round_jiffies_relative(2 * HZ));
3364 IWL_DEBUG_MAC80211(priv, "leave\n");
3367 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3369 struct iwl_priv *priv = hw->priv;
3371 IWL_DEBUG_MAC80211(priv, "enter\n");
3373 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3374 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3376 if (iwl3945_tx_skb(priv, skb))
3377 dev_kfree_skb_any(skb);
3379 IWL_DEBUG_MAC80211(priv, "leave\n");
3380 return NETDEV_TX_OK;
3383 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
3384 struct ieee80211_if_init_conf *conf)
3386 struct iwl_priv *priv = hw->priv;
3387 unsigned long flags;
3389 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
3392 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
3396 spin_lock_irqsave(&priv->lock, flags);
3397 priv->vif = conf->vif;
3398 priv->iw_mode = conf->type;
3400 spin_unlock_irqrestore(&priv->lock, flags);
3402 mutex_lock(&priv->mutex);
3404 if (conf->mac_addr) {
3405 IWL_DEBUG_MAC80211(priv, "Set: %pM\n", conf->mac_addr);
3406 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3409 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
3410 set_bit(STATUS_MODE_PENDING, &priv->status);
3412 mutex_unlock(&priv->mutex);
3414 IWL_DEBUG_MAC80211(priv, "leave\n");
3419 * iwl3945_mac_config - mac80211 config callback
3421 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3422 * be set inappropriately and the driver currently sets the hardware up to
3423 * use it whenever needed.
3425 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
3427 struct iwl_priv *priv = hw->priv;
3428 const struct iwl_channel_info *ch_info;
3429 struct ieee80211_conf *conf = &hw->conf;
3430 unsigned long flags;
3433 mutex_lock(&priv->mutex);
3434 IWL_DEBUG_MAC80211(priv, "enter to channel %d\n",
3435 conf->channel->hw_value);
3437 if (!iwl_is_ready(priv)) {
3438 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
3443 if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
3444 test_bit(STATUS_SCANNING, &priv->status))) {
3445 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
3446 set_bit(STATUS_CONF_PENDING, &priv->status);
3447 mutex_unlock(&priv->mutex);
3451 spin_lock_irqsave(&priv->lock, flags);
3453 ch_info = iwl_get_channel_info(priv, conf->channel->band,
3454 conf->channel->hw_value);
3455 if (!is_channel_valid(ch_info)) {
3456 IWL_DEBUG_SCAN(priv,
3457 "Channel %d [%d] is INVALID for this band.\n",
3458 conf->channel->hw_value, conf->channel->band);
3459 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
3460 spin_unlock_irqrestore(&priv->lock, flags);
3465 iwl_set_rxon_channel(priv, conf->channel);
3467 iwl_set_flags_for_band(priv, conf->channel->band);
3469 /* The list of supported rates and rate mask can be different
3470 * for each phymode; since the phymode may have changed, reset
3471 * the rate mask to what mac80211 lists */
3474 spin_unlock_irqrestore(&priv->lock, flags);
3476 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3477 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3478 iwl3945_hw_channel_switch(priv, conf->channel);
3483 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
3484 if (conf->radio_enabled &&
3485 iwl_radio_kill_sw_enable_radio(priv)) {
3486 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
3487 "waiting for uCode\n");
3491 if (!conf->radio_enabled) {
3492 iwl_radio_kill_sw_disable_radio(priv);
3493 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
3498 if (iwl_is_rfkill(priv)) {
3499 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
3506 if (memcmp(&priv->active_rxon,
3507 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3508 iwlcore_commit_rxon(priv);
3510 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration\n");
3512 IWL_DEBUG_MAC80211(priv, "leave\n");
3515 clear_bit(STATUS_CONF_PENDING, &priv->status);
3516 mutex_unlock(&priv->mutex);
3520 static void iwl3945_config_ap(struct iwl_priv *priv)
3524 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3527 /* The following should be done only at AP bring up */
3528 if (!(iwl_is_associated(priv))) {
3530 /* RXON - unassoc (to set timing command) */
3531 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3532 iwlcore_commit_rxon(priv);
3535 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3536 iwl3945_setup_rxon_timing(priv);
3537 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3538 sizeof(priv->rxon_timing),
3539 &priv->rxon_timing);
3541 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3542 "Attempting to continue.\n");
3544 /* FIXME: what should be the assoc_id for AP? */
3545 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3546 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3547 priv->staging_rxon.flags |=
3548 RXON_FLG_SHORT_PREAMBLE_MSK;
3550 priv->staging_rxon.flags &=
3551 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3553 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3554 if (priv->assoc_capability &
3555 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3556 priv->staging_rxon.flags |=
3557 RXON_FLG_SHORT_SLOT_MSK;
3559 priv->staging_rxon.flags &=
3560 ~RXON_FLG_SHORT_SLOT_MSK;
3562 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3563 priv->staging_rxon.flags &=
3564 ~RXON_FLG_SHORT_SLOT_MSK;
3566 /* restore RXON assoc */
3567 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3568 iwlcore_commit_rxon(priv);
3569 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3571 iwl3945_send_beacon_cmd(priv);
3573 /* FIXME - we need to add code here to detect a totally new
3574 * configuration, reset the AP, unassoc, rxon timing, assoc,
3575 * clear sta table, add BCAST sta... */
3578 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
3579 struct ieee80211_vif *vif,
3580 struct ieee80211_if_conf *conf)
3582 struct iwl_priv *priv = hw->priv;
3588 if (priv->vif != vif) {
3589 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
3593 /* handle this temporarily here */
3594 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
3595 conf->changed & IEEE80211_IFCC_BEACON) {
3596 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
3599 mutex_lock(&priv->mutex);
3600 rc = iwl_mac_beacon_update(hw, beacon);
3601 mutex_unlock(&priv->mutex);
3606 if (!iwl_is_alive(priv))
3609 mutex_lock(&priv->mutex);
3612 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
3615 * very dubious code was here; the probe filtering flag is never set:
3617 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3618 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3621 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3623 conf->bssid = priv->mac_addr;
3624 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3625 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
3628 if (priv->ibss_beacon)
3629 dev_kfree_skb(priv->ibss_beacon);
3631 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3634 if (iwl_is_rfkill(priv))
3637 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3638 !is_multicast_ether_addr(conf->bssid)) {
3639 /* If there is currently a HW scan going on in the background
3640 * then we need to cancel it else the RXON below will fail. */
3641 if (iwl_scan_cancel_timeout(priv, 100)) {
3642 IWL_WARN(priv, "Aborted scan still in progress "
3644 IWL_DEBUG_MAC80211(priv, "leaving:scan abort failed\n");
3645 mutex_unlock(&priv->mutex);
3648 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3650 /* TODO: Audit driver for usage of these members and see
3651 * if mac80211 deprecates them (priv->bssid looks like it
3652 * shouldn't be there, but I haven't scanned the IBSS code
3653 * to verify) - jpk */
3654 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3656 if (priv->iw_mode == NL80211_IFTYPE_AP)
3657 iwl3945_config_ap(priv);
3659 rc = iwlcore_commit_rxon(priv);
3660 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3661 priv->cfg->ops->smgmt->add_station(priv,
3662 priv->active_rxon.bssid_addr, 1, 0, NULL);
3666 iwl_scan_cancel_timeout(priv, 100);
3667 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3668 iwlcore_commit_rxon(priv);
3672 IWL_DEBUG_MAC80211(priv, "leave\n");
3673 mutex_unlock(&priv->mutex);
3678 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
3679 struct ieee80211_if_init_conf *conf)
3681 struct iwl_priv *priv = hw->priv;
3683 IWL_DEBUG_MAC80211(priv, "enter\n");
3685 mutex_lock(&priv->mutex);
3687 if (iwl_is_ready_rf(priv)) {
3688 iwl_scan_cancel_timeout(priv, 100);
3689 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3690 iwlcore_commit_rxon(priv);
3692 if (priv->vif == conf->vif) {
3694 memset(priv->bssid, 0, ETH_ALEN);
3696 mutex_unlock(&priv->mutex);
3698 IWL_DEBUG_MAC80211(priv, "leave\n");
3701 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3702 struct ieee80211_vif *vif,
3703 struct ieee80211_sta *sta,
3704 struct ieee80211_key_conf *key)
3706 struct iwl_priv *priv = hw->priv;
3709 u8 sta_id = IWL_INVALID_STATION;
3712 IWL_DEBUG_MAC80211(priv, "enter\n");
3714 if (iwl3945_mod_params.sw_crypto) {
3715 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3719 addr = sta ? sta->addr : iwl_bcast_addr;
3720 static_key = !iwl_is_associated(priv);
3723 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3724 if (sta_id == IWL_INVALID_STATION) {
3725 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3731 mutex_lock(&priv->mutex);
3732 iwl_scan_cancel_timeout(priv, 100);
3733 mutex_unlock(&priv->mutex);
3738 ret = iwl3945_set_static_key(priv, key);
3740 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3741 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3745 ret = iwl3945_remove_static_key(priv);
3747 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3748 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3754 IWL_DEBUG_MAC80211(priv, "leave\n");
3759 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
3760 struct ieee80211_tx_queue_stats *stats)
3762 struct iwl_priv *priv = hw->priv;
3764 struct iwl_tx_queue *txq;
3765 struct iwl_queue *q;
3766 unsigned long flags;
3768 IWL_DEBUG_MAC80211(priv, "enter\n");
3770 if (!iwl_is_ready_rf(priv)) {
3771 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
3775 spin_lock_irqsave(&priv->lock, flags);
3777 for (i = 0; i < AC_NUM; i++) {
3778 txq = &priv->txq[i];
3780 avail = iwl_queue_space(q);
3782 stats[i].len = q->n_window - avail;
3783 stats[i].limit = q->n_window - q->high_mark;
3784 stats[i].count = q->n_window;
3787 spin_unlock_irqrestore(&priv->lock, flags);
3789 IWL_DEBUG_MAC80211(priv, "leave\n");
3794 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
3796 struct iwl_priv *priv = hw->priv;
3797 unsigned long flags;
3799 mutex_lock(&priv->mutex);
3800 IWL_DEBUG_MAC80211(priv, "enter\n");
3802 iwl_reset_qos(priv);
3804 spin_lock_irqsave(&priv->lock, flags);
3806 priv->assoc_capability = 0;
3808 /* new association get rid of ibss beacon skb */
3809 if (priv->ibss_beacon)
3810 dev_kfree_skb(priv->ibss_beacon);
3812 priv->ibss_beacon = NULL;
3814 priv->beacon_int = priv->hw->conf.beacon_int;
3815 priv->timestamp = 0;
3816 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3817 priv->beacon_int = 0;
3819 spin_unlock_irqrestore(&priv->lock, flags);
3821 if (!iwl_is_ready_rf(priv)) {
3822 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
3823 mutex_unlock(&priv->mutex);
3827 /* we are restarting association process
3828 * clear RXON_FILTER_ASSOC_MSK bit
3830 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3831 iwl_scan_cancel_timeout(priv, 100);
3832 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3833 iwlcore_commit_rxon(priv);
3836 /* Per mac80211.h: This is only used in IBSS mode... */
3837 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3839 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
3840 mutex_unlock(&priv->mutex);
3846 mutex_unlock(&priv->mutex);
3848 IWL_DEBUG_MAC80211(priv, "leave\n");
3852 /*****************************************************************************
3856 *****************************************************************************/
3858 #ifdef CONFIG_IWLWIFI_DEBUG
3861 * The following adds a new attribute to the sysfs representation
3862 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3863 * used for controlling the debug level.
3865 * See the level definitions in iwl for details.
3867 static ssize_t show_debug_level(struct device *d,
3868 struct device_attribute *attr, char *buf)
3870 struct iwl_priv *priv = d->driver_data;
3872 return sprintf(buf, "0x%08X\n", priv->debug_level);
3874 static ssize_t store_debug_level(struct device *d,
3875 struct device_attribute *attr,
3876 const char *buf, size_t count)
3878 struct iwl_priv *priv = d->driver_data;
3882 ret = strict_strtoul(buf, 0, &val);
3884 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3886 priv->debug_level = val;
3888 return strnlen(buf, count);
3891 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3892 show_debug_level, store_debug_level);
3894 #endif /* CONFIG_IWLWIFI_DEBUG */
3896 static ssize_t show_temperature(struct device *d,
3897 struct device_attribute *attr, char *buf)
3899 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3901 if (!iwl_is_alive(priv))
3904 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3907 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3909 static ssize_t show_tx_power(struct device *d,
3910 struct device_attribute *attr, char *buf)
3912 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3913 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3916 static ssize_t store_tx_power(struct device *d,
3917 struct device_attribute *attr,
3918 const char *buf, size_t count)
3920 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3921 char *p = (char *)buf;
3924 val = simple_strtoul(p, &p, 10);
3926 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3928 iwl3945_hw_reg_set_txpower(priv, val);
3933 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3935 static ssize_t show_flags(struct device *d,
3936 struct device_attribute *attr, char *buf)
3938 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3940 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3943 static ssize_t store_flags(struct device *d,
3944 struct device_attribute *attr,
3945 const char *buf, size_t count)
3947 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3948 u32 flags = simple_strtoul(buf, NULL, 0);
3950 mutex_lock(&priv->mutex);
3951 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3952 /* Cancel any currently running scans... */
3953 if (iwl_scan_cancel_timeout(priv, 100))
3954 IWL_WARN(priv, "Could not cancel scan.\n");
3956 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3958 priv->staging_rxon.flags = cpu_to_le32(flags);
3959 iwlcore_commit_rxon(priv);
3962 mutex_unlock(&priv->mutex);
3967 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3969 static ssize_t show_filter_flags(struct device *d,
3970 struct device_attribute *attr, char *buf)
3972 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3974 return sprintf(buf, "0x%04X\n",
3975 le32_to_cpu(priv->active_rxon.filter_flags));
3978 static ssize_t store_filter_flags(struct device *d,
3979 struct device_attribute *attr,
3980 const char *buf, size_t count)
3982 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3983 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3985 mutex_lock(&priv->mutex);
3986 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3987 /* Cancel any currently running scans... */
3988 if (iwl_scan_cancel_timeout(priv, 100))
3989 IWL_WARN(priv, "Could not cancel scan.\n");
3991 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3992 "0x%04X\n", filter_flags);
3993 priv->staging_rxon.filter_flags =
3994 cpu_to_le32(filter_flags);
3995 iwlcore_commit_rxon(priv);
3998 mutex_unlock(&priv->mutex);
4003 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4004 store_filter_flags);
4006 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4008 static ssize_t show_measurement(struct device *d,
4009 struct device_attribute *attr, char *buf)
4011 struct iwl_priv *priv = dev_get_drvdata(d);
4012 struct iwl_spectrum_notification measure_report;
4013 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4014 u8 *data = (u8 *)&measure_report;
4015 unsigned long flags;
4017 spin_lock_irqsave(&priv->lock, flags);
4018 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4019 spin_unlock_irqrestore(&priv->lock, flags);
4022 memcpy(&measure_report, &priv->measure_report, size);
4023 priv->measurement_status = 0;
4024 spin_unlock_irqrestore(&priv->lock, flags);
4026 while (size && (PAGE_SIZE - len)) {
4027 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4028 PAGE_SIZE - len, 1);
4030 if (PAGE_SIZE - len)
4034 size -= min(size, 16U);
4040 static ssize_t store_measurement(struct device *d,
4041 struct device_attribute *attr,
4042 const char *buf, size_t count)
4044 struct iwl_priv *priv = dev_get_drvdata(d);
4045 struct ieee80211_measurement_params params = {
4046 .channel = le16_to_cpu(priv->active_rxon.channel),
4047 .start_time = cpu_to_le64(priv->last_tsf),
4048 .duration = cpu_to_le16(1),
4050 u8 type = IWL_MEASURE_BASIC;
4056 strncpy(buffer, buf, min(sizeof(buffer), count));
4057 channel = simple_strtoul(p, NULL, 0);
4059 params.channel = channel;
4062 while (*p && *p != ' ')
4065 type = simple_strtoul(p + 1, NULL, 0);
4068 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
4069 "channel %d (for '%s')\n", type, params.channel, buf);
4070 iwl3945_get_measurement(priv, ¶ms, type);
4075 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4076 show_measurement, store_measurement);
4077 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
4079 static ssize_t store_retry_rate(struct device *d,
4080 struct device_attribute *attr,
4081 const char *buf, size_t count)
4083 struct iwl_priv *priv = dev_get_drvdata(d);
4085 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4086 if (priv->retry_rate <= 0)
4087 priv->retry_rate = 1;
4092 static ssize_t show_retry_rate(struct device *d,
4093 struct device_attribute *attr, char *buf)
4095 struct iwl_priv *priv = dev_get_drvdata(d);
4096 return sprintf(buf, "%d", priv->retry_rate);
4099 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4103 static ssize_t store_power_level(struct device *d,
4104 struct device_attribute *attr,
4105 const char *buf, size_t count)
4107 struct iwl_priv *priv = dev_get_drvdata(d);
4112 mutex_lock(&priv->mutex);
4114 ret = strict_strtoul(buf, 10, &mode);
4118 ret = iwl_power_set_user_mode(priv, mode);
4120 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
4126 mutex_unlock(&priv->mutex);
4130 static ssize_t show_power_level(struct device *d,
4131 struct device_attribute *attr, char *buf)
4133 struct iwl_priv *priv = dev_get_drvdata(d);
4134 int mode = priv->power_data.user_power_setting;
4135 int system = priv->power_data.system_power_setting;
4136 int level = priv->power_data.power_mode;
4140 case IWL_POWER_SYS_AUTO:
4141 p += sprintf(p, "SYSTEM:auto");
4143 case IWL_POWER_SYS_AC:
4144 p += sprintf(p, "SYSTEM:ac");
4146 case IWL_POWER_SYS_BATTERY:
4147 p += sprintf(p, "SYSTEM:battery");
4151 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
4153 p += sprintf(p, "\tINDEX:%d", level);
4154 p += sprintf(p, "\n");
4158 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
4159 show_power_level, store_power_level);
4161 #define MAX_WX_STRING 80
4163 /* Values are in microsecond */
4164 static const s32 timeout_duration[] = {
4171 static const s32 period_duration[] = {
4179 static ssize_t show_channels(struct device *d,
4180 struct device_attribute *attr, char *buf)
4182 /* all this shit doesn't belong into sysfs anyway */
4186 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4188 static ssize_t show_statistics(struct device *d,
4189 struct device_attribute *attr, char *buf)
4191 struct iwl_priv *priv = dev_get_drvdata(d);
4192 u32 size = sizeof(struct iwl3945_notif_statistics);
4193 u32 len = 0, ofs = 0;
4194 u8 *data = (u8 *)&priv->statistics_39;
4197 if (!iwl_is_alive(priv))
4200 mutex_lock(&priv->mutex);
4201 rc = iwl_send_statistics_request(priv, 0);
4202 mutex_unlock(&priv->mutex);
4206 "Error sending statistics request: 0x%08X\n", rc);
4210 while (size && (PAGE_SIZE - len)) {
4211 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4212 PAGE_SIZE - len, 1);
4214 if (PAGE_SIZE - len)
4218 size -= min(size, 16U);
4224 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4226 static ssize_t show_antenna(struct device *d,
4227 struct device_attribute *attr, char *buf)
4229 struct iwl_priv *priv = dev_get_drvdata(d);
4231 if (!iwl_is_alive(priv))
4234 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
4237 static ssize_t store_antenna(struct device *d,
4238 struct device_attribute *attr,
4239 const char *buf, size_t count)
4241 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
4247 if (sscanf(buf, "%1i", &ant) != 1) {
4248 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
4252 if ((ant >= 0) && (ant <= 2)) {
4253 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
4254 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
4256 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
4262 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
4264 static ssize_t show_status(struct device *d,
4265 struct device_attribute *attr, char *buf)
4267 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4268 if (!iwl_is_alive(priv))
4270 return sprintf(buf, "0x%08x\n", (int)priv->status);
4273 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4275 static ssize_t dump_error_log(struct device *d,
4276 struct device_attribute *attr,
4277 const char *buf, size_t count)
4279 char *p = (char *)buf;
4282 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
4284 return strnlen(buf, count);
4287 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
4289 static ssize_t dump_event_log(struct device *d,
4290 struct device_attribute *attr,
4291 const char *buf, size_t count)
4293 char *p = (char *)buf;
4296 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
4298 return strnlen(buf, count);
4301 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
4303 /*****************************************************************************
4305 * driver setup and tear down
4307 *****************************************************************************/
4309 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
4311 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4313 init_waitqueue_head(&priv->wait_command_queue);
4315 INIT_WORK(&priv->up, iwl3945_bg_up);
4316 INIT_WORK(&priv->restart, iwl3945_bg_restart);
4317 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
4318 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4319 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
4320 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
4321 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
4322 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
4323 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4324 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
4325 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
4326 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
4328 iwl3945_hw_setup_deferred_work(priv);
4330 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4331 iwl3945_irq_tasklet, (unsigned long)priv);
4334 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4336 iwl3945_hw_cancel_deferred_work(priv);
4338 cancel_delayed_work_sync(&priv->init_alive_start);
4339 cancel_delayed_work(&priv->scan_check);
4340 cancel_delayed_work(&priv->alive_start);
4341 cancel_work_sync(&priv->beacon_update);
4344 static struct attribute *iwl3945_sysfs_entries[] = {
4345 &dev_attr_antenna.attr,
4346 &dev_attr_channels.attr,
4347 &dev_attr_dump_errors.attr,
4348 &dev_attr_dump_events.attr,
4349 &dev_attr_flags.attr,
4350 &dev_attr_filter_flags.attr,
4351 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4352 &dev_attr_measurement.attr,
4354 &dev_attr_power_level.attr,
4355 &dev_attr_retry_rate.attr,
4356 &dev_attr_statistics.attr,
4357 &dev_attr_status.attr,
4358 &dev_attr_temperature.attr,
4359 &dev_attr_tx_power.attr,
4360 #ifdef CONFIG_IWLWIFI_DEBUG
4361 &dev_attr_debug_level.attr,
4366 static struct attribute_group iwl3945_attribute_group = {
4367 .name = NULL, /* put in device directory */
4368 .attrs = iwl3945_sysfs_entries,
4371 static struct ieee80211_ops iwl3945_hw_ops = {
4372 .tx = iwl3945_mac_tx,
4373 .start = iwl3945_mac_start,
4374 .stop = iwl3945_mac_stop,
4375 .add_interface = iwl3945_mac_add_interface,
4376 .remove_interface = iwl3945_mac_remove_interface,
4377 .config = iwl3945_mac_config,
4378 .config_interface = iwl3945_mac_config_interface,
4379 .configure_filter = iwl_configure_filter,
4380 .set_key = iwl3945_mac_set_key,
4381 .get_tx_stats = iwl3945_mac_get_tx_stats,
4382 .conf_tx = iwl_mac_conf_tx,
4383 .reset_tsf = iwl3945_mac_reset_tsf,
4384 .bss_info_changed = iwl_bss_info_changed,
4385 .hw_scan = iwl_mac_hw_scan
4388 static int iwl3945_init_drv(struct iwl_priv *priv)
4391 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4393 priv->retry_rate = 1;
4394 priv->ibss_beacon = NULL;
4396 spin_lock_init(&priv->lock);
4397 spin_lock_init(&priv->power_data.lock);
4398 spin_lock_init(&priv->sta_lock);
4399 spin_lock_init(&priv->hcmd_lock);
4401 INIT_LIST_HEAD(&priv->free_frames);
4403 mutex_init(&priv->mutex);
4405 /* Clear the driver's (not device's) station table */
4406 priv->cfg->ops->smgmt->clear_station_table(priv);
4408 priv->data_retry_limit = -1;
4409 priv->ieee_channels = NULL;
4410 priv->ieee_rates = NULL;
4411 priv->band = IEEE80211_BAND_2GHZ;
4413 priv->iw_mode = NL80211_IFTYPE_STATION;
4415 iwl_reset_qos(priv);
4417 priv->qos_data.qos_active = 0;
4418 priv->qos_data.qos_cap.val = 0;
4420 priv->rates_mask = IWL_RATES_MASK;
4421 /* If power management is turned on, default to CAM mode */
4422 priv->power_mode = IWL_POWER_MODE_CAM;
4423 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4425 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4426 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4431 ret = iwl_init_channel_map(priv);
4433 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4437 /* Set up txpower settings in driver for all channels */
4438 if (iwl3945_txpower_set_from_eeprom(priv)) {
4440 goto err_free_channel_map;
4443 ret = iwlcore_init_geos(priv);
4445 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4446 goto err_free_channel_map;
4448 iwl3945_init_hw_rates(priv, priv->ieee_rates);
4452 err_free_channel_map:
4453 iwl_free_channel_map(priv);
4458 static int iwl3945_setup_mac(struct iwl_priv *priv)
4461 struct ieee80211_hw *hw = priv->hw;
4463 hw->rate_control_algorithm = "iwl-3945-rs";
4464 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4466 /* Tell mac80211 our characteristics */
4467 hw->flags = IEEE80211_HW_SIGNAL_DBM |
4468 IEEE80211_HW_NOISE_DBM |
4469 IEEE80211_HW_SPECTRUM_MGMT;
4471 hw->wiphy->interface_modes =
4472 BIT(NL80211_IFTYPE_STATION) |
4473 BIT(NL80211_IFTYPE_ADHOC);
4475 hw->wiphy->custom_regulatory = true;
4477 hw->wiphy->max_scan_ssids = 1; /* WILL FIX */
4479 /* Default value; 4 EDCA QOS priorities */
4482 hw->conf.beacon_int = 100;
4484 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4485 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4486 &priv->bands[IEEE80211_BAND_2GHZ];
4488 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4489 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4490 &priv->bands[IEEE80211_BAND_5GHZ];
4492 ret = ieee80211_register_hw(priv->hw);
4494 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4497 priv->mac80211_registered = 1;
4502 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4505 struct iwl_priv *priv;
4506 struct ieee80211_hw *hw;
4507 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4508 struct iwl3945_eeprom *eeprom;
4509 unsigned long flags;
4511 /***********************
4512 * 1. Allocating HW data
4513 * ********************/
4515 /* mac80211 allocates memory for this device instance, including
4516 * space for this driver's private structure */
4517 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4519 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4524 SET_IEEE80211_DEV(hw, &pdev->dev);
4526 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4527 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4529 "invalid queues_num, should be between %d and %d\n",
4530 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4532 goto out_ieee80211_free_hw;
4536 * Disabling hardware scan means that mac80211 will perform scans
4537 * "the hard way", rather than using device's scan.
4539 if (iwl3945_mod_params.disable_hw_scan) {
4540 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4541 iwl3945_hw_ops.hw_scan = NULL;
4545 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4547 priv->pci_dev = pdev;
4549 #ifdef CONFIG_IWLWIFI_DEBUG
4550 priv->debug_level = iwl3945_mod_params.debug;
4551 atomic_set(&priv->restrict_refcnt, 0);
4554 /***************************
4555 * 2. Initializing PCI bus
4556 * *************************/
4557 if (pci_enable_device(pdev)) {
4559 goto out_ieee80211_free_hw;
4562 pci_set_master(pdev);
4564 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4566 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4568 IWL_WARN(priv, "No suitable DMA available.\n");
4569 goto out_pci_disable_device;
4572 pci_set_drvdata(pdev, priv);
4573 err = pci_request_regions(pdev, DRV_NAME);
4575 goto out_pci_disable_device;
4577 /***********************
4578 * 3. Read REV Register
4579 * ********************/
4580 priv->hw_base = pci_iomap(pdev, 0, 0);
4581 if (!priv->hw_base) {
4583 goto out_pci_release_regions;
4586 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4587 (unsigned long long) pci_resource_len(pdev, 0));
4588 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4590 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4591 * PCI Tx retries from interfering with C3 CPU state */
4592 pci_write_config_byte(pdev, 0x41, 0x00);
4595 err = priv->cfg->ops->lib->apm_ops.init(priv);
4597 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4601 /***********************
4603 * ********************/
4605 /* Read the EEPROM */
4606 err = iwl_eeprom_init(priv);
4608 IWL_ERR(priv, "Unable to init EEPROM\n");
4611 /* MAC Address location in EEPROM same for 3945/4965 */
4612 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4613 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4614 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4615 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4617 /***********************
4618 * 5. Setup HW Constants
4619 * ********************/
4620 /* Device-specific setup */
4621 if (iwl3945_hw_set_hw_params(priv)) {
4622 IWL_ERR(priv, "failed to set hw settings\n");
4623 goto out_eeprom_free;
4626 /***********************
4628 * ********************/
4630 err = iwl3945_init_drv(priv);
4632 IWL_ERR(priv, "initializing driver failed\n");
4633 goto out_unset_hw_params;
4636 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4639 /***********************************
4640 * 7. Initialize Module Parameters
4641 * **********************************/
4643 /* Initialize module parameter values here */
4644 /* Disable radio (SW RF KILL) via parameter when loading driver */
4645 if (iwl3945_mod_params.disable) {
4646 set_bit(STATUS_RF_KILL_SW, &priv->status);
4647 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
4651 /***********************
4653 * ********************/
4655 spin_lock_irqsave(&priv->lock, flags);
4656 iwl_disable_interrupts(priv);
4657 spin_unlock_irqrestore(&priv->lock, flags);
4659 pci_enable_msi(priv->pci_dev);
4661 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
4664 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4665 goto out_disable_msi;
4668 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4670 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4671 goto out_release_irq;
4674 iwl_set_rxon_channel(priv,
4675 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4676 iwl3945_setup_deferred_work(priv);
4677 iwl3945_setup_rx_handlers(priv);
4679 /*********************************
4680 * 9. Setup and Register mac80211
4681 * *******************************/
4683 iwl_enable_interrupts(priv);
4685 err = iwl3945_setup_mac(priv);
4687 goto out_remove_sysfs;
4689 err = iwl_rfkill_init(priv);
4691 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4692 "Ignoring error: %d\n", err);
4694 iwl_rfkill_set_hw_state(priv);
4696 /* Start monitoring the killswitch */
4697 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4703 destroy_workqueue(priv->workqueue);
4704 priv->workqueue = NULL;
4705 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4707 free_irq(priv->pci_dev->irq, priv);
4709 pci_disable_msi(priv->pci_dev);
4710 iwlcore_free_geos(priv);
4711 iwl_free_channel_map(priv);
4712 out_unset_hw_params:
4713 iwl3945_unset_hw_params(priv);
4715 iwl_eeprom_free(priv);
4717 pci_iounmap(pdev, priv->hw_base);
4718 out_pci_release_regions:
4719 pci_release_regions(pdev);
4720 out_pci_disable_device:
4721 pci_set_drvdata(pdev, NULL);
4722 pci_disable_device(pdev);
4723 out_ieee80211_free_hw:
4724 ieee80211_free_hw(priv->hw);
4729 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4731 struct iwl_priv *priv = pci_get_drvdata(pdev);
4732 unsigned long flags;
4737 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4739 set_bit(STATUS_EXIT_PENDING, &priv->status);
4741 if (priv->mac80211_registered) {
4742 ieee80211_unregister_hw(priv->hw);
4743 priv->mac80211_registered = 0;
4748 /* make sure we flush any pending irq or
4749 * tasklet for the driver
4751 spin_lock_irqsave(&priv->lock, flags);
4752 iwl_disable_interrupts(priv);
4753 spin_unlock_irqrestore(&priv->lock, flags);
4755 iwl_synchronize_irq(priv);
4757 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4759 iwl_rfkill_unregister(priv);
4760 cancel_delayed_work(&priv->rfkill_poll);
4762 iwl3945_dealloc_ucode_pci(priv);
4765 iwl_rx_queue_free(priv, &priv->rxq);
4766 iwl3945_hw_txq_ctx_free(priv);
4768 iwl3945_unset_hw_params(priv);
4769 priv->cfg->ops->smgmt->clear_station_table(priv);
4771 /*netif_stop_queue(dev); */
4772 flush_workqueue(priv->workqueue);
4774 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4775 * priv->workqueue... so we can't take down the workqueue
4777 destroy_workqueue(priv->workqueue);
4778 priv->workqueue = NULL;
4780 free_irq(pdev->irq, priv);
4781 pci_disable_msi(pdev);
4783 pci_iounmap(pdev, priv->hw_base);
4784 pci_release_regions(pdev);
4785 pci_disable_device(pdev);
4786 pci_set_drvdata(pdev, NULL);
4788 iwl_free_channel_map(priv);
4789 iwlcore_free_geos(priv);
4791 if (priv->ibss_beacon)
4792 dev_kfree_skb(priv->ibss_beacon);
4794 ieee80211_free_hw(priv->hw);
4798 /*****************************************************************************
4800 * driver and module entry point
4802 *****************************************************************************/
4804 static struct pci_driver iwl3945_driver = {
4806 .id_table = iwl3945_hw_card_ids,
4807 .probe = iwl3945_pci_probe,
4808 .remove = __devexit_p(iwl3945_pci_remove),
4810 .suspend = iwl_pci_suspend,
4811 .resume = iwl_pci_resume,
4815 static int __init iwl3945_init(void)
4819 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4820 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4822 ret = iwl3945_rate_control_register();
4824 printk(KERN_ERR DRV_NAME
4825 "Unable to register rate control algorithm: %d\n", ret);
4829 ret = pci_register_driver(&iwl3945_driver);
4831 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4832 goto error_register;
4838 iwl3945_rate_control_unregister();
4842 static void __exit iwl3945_exit(void)
4844 pci_unregister_driver(&iwl3945_driver);
4845 iwl3945_rate_control_unregister();
4848 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4850 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4851 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4852 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
4853 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
4854 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4855 MODULE_PARM_DESC(swcrypto,
4856 "using software crypto (default 1 [software])\n");
4857 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4858 MODULE_PARM_DESC(debug, "debug output mask");
4859 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4860 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4862 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4863 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4865 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4866 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4868 module_exit(iwl3945_exit);
4869 module_init(iwl3945_init);