1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_MAX_NUM_QUEUES,
95 /* the rest are 0 by default */
98 /*************** STATION TABLE MANAGEMENT ****
99 * mac80211 should be examined to determine if sta_info is duplicating
100 * the functionality provided here
103 /**************************************************************/
104 #if 0 /* temporary disable till we add real remove station */
106 * iwl3945_remove_station - Remove driver's knowledge of station.
108 * NOTE: This does not remove station from device's station table.
110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
112 int index = IWL_INVALID_STATION;
116 spin_lock_irqsave(&priv->sta_lock, flags);
120 else if (is_broadcast_ether_addr(addr))
121 index = priv->hw_params.bcast_sta_id;
123 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
124 if (priv->stations_39[i].used &&
125 !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
131 if (unlikely(index == IWL_INVALID_STATION))
134 if (priv->stations_39[index].used) {
135 priv->stations_39[index].used = 0;
136 priv->num_stations--;
139 BUG_ON(priv->num_stations < 0);
142 spin_unlock_irqrestore(&priv->sta_lock, flags);
148 * iwl3945_clear_stations_table - Clear the driver's station table
150 * NOTE: This does not clear or otherwise alter the device's station table.
152 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
156 spin_lock_irqsave(&priv->sta_lock, flags);
158 priv->num_stations = 0;
159 memset(priv->stations_39, 0, sizeof(priv->stations_39));
161 spin_unlock_irqrestore(&priv->sta_lock, flags);
165 * iwl3945_add_station - Add station to station tables in driver and device
167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
170 int index = IWL_INVALID_STATION;
171 struct iwl3945_station_entry *station;
172 unsigned long flags_spin;
175 spin_lock_irqsave(&priv->sta_lock, flags_spin);
178 else if (is_broadcast_ether_addr(addr))
179 index = priv->hw_params.bcast_sta_id;
181 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
182 if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
188 if (!priv->stations_39[i].used &&
189 index == IWL_INVALID_STATION)
193 /* These two conditions has the same outcome but keep them separate
194 since they have different meaning */
195 if (unlikely(index == IWL_INVALID_STATION)) {
196 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
200 if (priv->stations_39[index].used &&
201 !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
202 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
206 IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
207 station = &priv->stations_39[index];
209 priv->num_stations++;
211 /* Set up the REPLY_ADD_STA command to send to device */
212 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
213 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
214 station->sta.mode = 0;
215 station->sta.sta.sta_id = index;
216 station->sta.station_flags = 0;
218 if (priv->band == IEEE80211_BAND_5GHZ)
219 rate = IWL_RATE_6M_PLCP;
221 rate = IWL_RATE_1M_PLCP;
223 /* Turn on both antennas for the station... */
224 station->sta.rate_n_flags =
225 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
227 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
229 /* Add station to device's station table */
230 iwl_send_add_sta(priv,
231 (struct iwl_addsta_cmd *)&station->sta, flags);
236 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
239 struct iwl_rx_packet *res = NULL;
240 struct iwl3945_rxon_assoc_cmd rxon_assoc;
241 struct iwl_host_cmd cmd = {
242 .id = REPLY_RXON_ASSOC,
243 .len = sizeof(rxon_assoc),
244 .meta.flags = CMD_WANT_SKB,
247 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
248 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
250 if ((rxon1->flags == rxon2->flags) &&
251 (rxon1->filter_flags == rxon2->filter_flags) &&
252 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
253 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
254 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
258 rxon_assoc.flags = priv->staging_rxon.flags;
259 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
260 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
261 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
262 rxon_assoc.reserved = 0;
264 rc = iwl_send_cmd_sync(priv, &cmd);
268 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
269 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
270 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
274 priv->alloc_rxb_skb--;
275 dev_kfree_skb_any(cmd.meta.u.skb);
281 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
282 * @priv: eeprom and antenna fields are used to determine antenna flags
284 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
285 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
287 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
288 * IWL_ANTENNA_MAIN - Force MAIN antenna
289 * IWL_ANTENNA_AUX - Force AUX antenna
291 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
293 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
295 switch (iwl3945_mod_params.antenna) {
296 case IWL_ANTENNA_DIVERSITY:
299 case IWL_ANTENNA_MAIN:
300 if (eeprom->antenna_switch_type)
301 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
302 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
304 case IWL_ANTENNA_AUX:
305 if (eeprom->antenna_switch_type)
306 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
307 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
310 /* bad antenna selector value */
311 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
312 iwl3945_mod_params.antenna);
314 return 0; /* "diversity" is default if error */
318 * iwl3945_commit_rxon - commit staging_rxon to hardware
320 * The RXON command in staging_rxon is committed to the hardware and
321 * the active_rxon structure is updated with the new data. This
322 * function correctly transitions out of the RXON_ASSOC_MSK state if
323 * a HW tune is required based on the RXON structure changes.
325 static int iwl3945_commit_rxon(struct iwl_priv *priv)
327 /* cast away the const for active_rxon in this function */
328 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
329 struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
332 if (!iwl_is_alive(priv))
335 /* always get timestamp with Rx frame */
336 staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
339 staging_rxon->flags &=
340 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
341 staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
343 rc = iwl_check_rxon_cmd(priv);
345 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
349 /* If we don't need to send a full RXON, we can use
350 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
351 * and other flags for the current radio configuration. */
352 if (!iwl_full_rxon_required(priv)) {
353 rc = iwl3945_send_rxon_assoc(priv);
355 IWL_ERR(priv, "Error setting RXON_ASSOC "
356 "configuration (%d).\n", rc);
360 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
365 /* If we are currently associated and the new config requires
366 * an RXON_ASSOC and the new config wants the associated mask enabled,
367 * we must clear the associated from the active configuration
368 * before we apply the new config */
369 if (iwl_is_associated(priv) &&
370 (staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK)) {
371 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
372 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
375 * reserved4 and 5 could have been filled by the iwlcore code.
376 * Let's clear them before pushing to the 3945.
378 active_rxon->reserved4 = 0;
379 active_rxon->reserved5 = 0;
380 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
381 sizeof(struct iwl3945_rxon_cmd),
384 /* If the mask clearing failed then we set
385 * active_rxon back to what it was previously */
387 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
388 IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
389 "configuration (%d).\n", rc);
394 IWL_DEBUG_INFO("Sending RXON\n"
395 "* with%s RXON_FILTER_ASSOC_MSK\n"
398 ((priv->staging_rxon.filter_flags &
399 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
400 le16_to_cpu(staging_rxon->channel),
401 staging_rxon->bssid_addr);
404 * reserved4 and 5 could have been filled by the iwlcore code.
405 * Let's clear them before pushing to the 3945.
407 staging_rxon->reserved4 = 0;
408 staging_rxon->reserved5 = 0;
410 /* Apply the new configuration */
411 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
412 sizeof(struct iwl3945_rxon_cmd),
415 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
419 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
421 iwl3945_clear_stations_table(priv);
423 /* If we issue a new RXON command which required a tune then we must
424 * send a new TXPOWER command or we won't be able to Tx any frames */
425 rc = priv->cfg->ops->lib->send_tx_power(priv);
427 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
431 /* Add the broadcast address so we can send broadcast frames */
432 if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
433 IWL_INVALID_STATION) {
434 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
438 /* If we have set the ASSOC_MSK and we are in BSS mode then
439 * add the IWL_AP_ID to the station rate table */
440 if (iwl_is_associated(priv) &&
441 (priv->iw_mode == NL80211_IFTYPE_STATION))
442 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr,
444 == IWL_INVALID_STATION) {
445 IWL_ERR(priv, "Error adding AP address for transmit\n");
449 /* Init the hardware's rate fallback order based on the band */
450 rc = iwl3945_init_hw_rate_table(priv);
452 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
459 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
460 struct ieee80211_key_conf *keyconf,
464 __le16 key_flags = 0;
466 switch (keyconf->alg) {
468 key_flags |= STA_KEY_FLG_CCMP;
469 key_flags |= cpu_to_le16(
470 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
471 key_flags &= ~STA_KEY_FLG_INVALID;
478 spin_lock_irqsave(&priv->sta_lock, flags);
479 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
480 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
481 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
484 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
486 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
487 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
488 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
490 spin_unlock_irqrestore(&priv->sta_lock, flags);
492 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
493 iwl_send_add_sta(priv,
494 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
498 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
502 spin_lock_irqsave(&priv->sta_lock, flags);
503 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
504 memset(&priv->stations_39[sta_id].sta.key, 0,
505 sizeof(struct iwl4965_keyinfo));
506 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
507 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
508 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
509 spin_unlock_irqrestore(&priv->sta_lock, flags);
511 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
512 iwl_send_add_sta(priv,
513 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
517 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
519 struct list_head *element;
521 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
524 while (!list_empty(&priv->free_frames)) {
525 element = priv->free_frames.next;
527 kfree(list_entry(element, struct iwl3945_frame, list));
528 priv->frames_count--;
531 if (priv->frames_count) {
532 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
534 priv->frames_count = 0;
538 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
540 struct iwl3945_frame *frame;
541 struct list_head *element;
542 if (list_empty(&priv->free_frames)) {
543 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
545 IWL_ERR(priv, "Could not allocate frame!\n");
549 priv->frames_count++;
553 element = priv->free_frames.next;
555 return list_entry(element, struct iwl3945_frame, list);
558 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
560 memset(frame, 0, sizeof(*frame));
561 list_add(&frame->list, &priv->free_frames);
564 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
565 struct ieee80211_hdr *hdr,
569 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
570 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
571 (priv->iw_mode != NL80211_IFTYPE_AP)))
574 if (priv->ibss_beacon->len > left)
577 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
579 return priv->ibss_beacon->len;
582 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
584 struct iwl3945_frame *frame;
585 unsigned int frame_size;
589 frame = iwl3945_get_free_frame(priv);
592 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
597 rate = iwl_rate_get_lowest_plcp(priv);
599 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
601 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
604 iwl3945_free_frame(priv, frame);
609 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
611 if (priv->shared_virt)
612 pci_free_consistent(priv->pci_dev,
613 sizeof(struct iwl3945_shared),
621 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
622 struct iwl_qosparam_cmd *qos)
625 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
626 sizeof(struct iwl_qosparam_cmd), qos);
629 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
633 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
636 spin_lock_irqsave(&priv->lock, flags);
637 priv->qos_data.def_qos_parm.qos_flags = 0;
639 if (priv->qos_data.qos_cap.q_AP.queue_request &&
640 !priv->qos_data.qos_cap.q_AP.txop_request)
641 priv->qos_data.def_qos_parm.qos_flags |=
642 QOS_PARAM_FLG_TXOP_TYPE_MSK;
644 if (priv->qos_data.qos_active)
645 priv->qos_data.def_qos_parm.qos_flags |=
646 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
648 spin_unlock_irqrestore(&priv->lock, flags);
650 if (force || iwl_is_associated(priv)) {
651 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
652 priv->qos_data.qos_active);
654 iwl3945_send_qos_params_command(priv,
655 &(priv->qos_data.def_qos_parm));
660 * Power management (not Tx power!) functions
662 #define MSEC_TO_USEC 1024
665 /* default power management (not Tx power) table values */
667 static struct iwl_power_vec_entry range_0[IWL_POWER_MAX] = {
668 {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
669 {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
670 {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
671 {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
672 {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
673 {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
677 static struct iwl_power_vec_entry range_1[IWL_POWER_MAX] = {
678 {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
679 {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
680 {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
681 {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
682 {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
683 {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
686 int iwl3945_power_init_handle(struct iwl_priv *priv)
689 struct iwl_power_mgr *pow_data;
690 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_MAX;
693 IWL_DEBUG_POWER("Initialize power \n");
695 pow_data = &priv->power_data;
697 memset(pow_data, 0, sizeof(*pow_data));
699 pow_data->dtim_period = 1;
701 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
702 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
704 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
708 struct iwl_powertable_cmd *cmd;
710 IWL_DEBUG_POWER("adjust power command flags\n");
712 for (i = 0; i < IWL_POWER_MAX; i++) {
713 cmd = &pow_data->pwr_range_0[i].cmd;
716 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
718 cmd->flags |= IWL_POWER_PCI_PM_MSK;
724 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
725 struct iwl_powertable_cmd *cmd, u32 mode)
727 struct iwl_power_mgr *pow_data;
728 struct iwl_power_vec_entry *range;
734 if (mode > IWL_POWER_INDEX_5) {
735 IWL_DEBUG_POWER("Error invalid power mode \n");
738 pow_data = &priv->power_data;
740 if (pow_data->dtim_period < 10)
741 range = &pow_data->pwr_range_0[0];
743 range = &pow_data->pwr_range_1[1];
745 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
752 skip = !!range[mode].no_dtim;
756 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
757 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
758 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
761 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
764 for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
765 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
766 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
768 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
769 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
770 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
771 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
772 le32_to_cpu(cmd->sleep_interval[0]),
773 le32_to_cpu(cmd->sleep_interval[1]),
774 le32_to_cpu(cmd->sleep_interval[2]),
775 le32_to_cpu(cmd->sleep_interval[3]),
776 le32_to_cpu(cmd->sleep_interval[4]));
781 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
783 u32 uninitialized_var(final_mode);
785 struct iwl_powertable_cmd cmd;
787 /* If on battery, set to 3,
788 * if plugged into AC power, set to CAM ("continuously aware mode"),
791 case IWL39_POWER_BATTERY:
792 final_mode = IWL_POWER_INDEX_3;
795 final_mode = IWL_POWER_MODE_CAM;
802 iwl3945_update_power_cmd(priv, &cmd, final_mode);
804 /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
805 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
806 sizeof(struct iwl3945_powertable_cmd), &cmd);
808 if (final_mode == IWL_POWER_MODE_CAM)
809 clear_bit(STATUS_POWER_PMI, &priv->status);
811 set_bit(STATUS_POWER_PMI, &priv->status);
816 #define MAX_UCODE_BEACON_INTERVAL 1024
817 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
819 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
822 u16 beacon_factor = 0;
825 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
826 / MAX_UCODE_BEACON_INTERVAL;
827 new_val = beacon_val / beacon_factor;
829 return cpu_to_le16(new_val);
832 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
834 u64 interval_tm_unit;
837 struct ieee80211_conf *conf = NULL;
840 conf = ieee80211_get_hw_conf(priv->hw);
842 spin_lock_irqsave(&priv->lock, flags);
843 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
844 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
846 tsf = priv->timestamp;
848 beacon_int = priv->beacon_int;
849 spin_unlock_irqrestore(&priv->lock, flags);
851 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
852 if (beacon_int == 0) {
853 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
854 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
856 priv->rxon_timing.beacon_interval =
857 cpu_to_le16(beacon_int);
858 priv->rxon_timing.beacon_interval =
859 iwl3945_adjust_beacon_interval(
860 le16_to_cpu(priv->rxon_timing.beacon_interval));
863 priv->rxon_timing.atim_window = 0;
865 priv->rxon_timing.beacon_interval =
866 iwl3945_adjust_beacon_interval(conf->beacon_int);
867 /* TODO: we need to get atim_window from upper stack
868 * for now we set to 0 */
869 priv->rxon_timing.atim_window = 0;
873 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
874 result = do_div(tsf, interval_tm_unit);
875 priv->rxon_timing.beacon_init_val =
876 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
879 ("beacon interval %d beacon timer %d beacon tim %d\n",
880 le16_to_cpu(priv->rxon_timing.beacon_interval),
881 le32_to_cpu(priv->rxon_timing.beacon_init_val),
882 le16_to_cpu(priv->rxon_timing.atim_window));
885 static int iwl3945_scan_initiate(struct iwl_priv *priv)
887 if (!iwl_is_ready_rf(priv)) {
888 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
892 if (test_bit(STATUS_SCANNING, &priv->status)) {
893 IWL_DEBUG_SCAN("Scan already in progress.\n");
897 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
898 IWL_DEBUG_SCAN("Scan request while abort pending. "
903 IWL_DEBUG_INFO("Starting scan...\n");
904 if (priv->cfg->sku & IWL_SKU_G)
905 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
906 if (priv->cfg->sku & IWL_SKU_A)
907 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
908 set_bit(STATUS_SCANNING, &priv->status);
909 priv->scan_start = jiffies;
910 priv->scan_pass_start = priv->scan_start;
912 queue_work(priv->workqueue, &priv->request_scan);
917 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
919 if (mode == NL80211_IFTYPE_ADHOC) {
920 const struct iwl_channel_info *ch_info;
922 ch_info = iwl_get_channel_info(priv,
924 le16_to_cpu(priv->staging_rxon.channel));
926 if (!ch_info || !is_channel_ibss(ch_info)) {
927 IWL_ERR(priv, "channel %d not IBSS channel\n",
928 le16_to_cpu(priv->staging_rxon.channel));
933 iwl_connection_init_rx_config(priv, mode);
935 iwl3945_clear_stations_table(priv);
937 /* don't commit rxon if rf-kill is on*/
938 if (!iwl_is_ready_rf(priv))
941 cancel_delayed_work(&priv->scan_check);
942 if (iwl_scan_cancel_timeout(priv, 100)) {
943 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
944 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
948 iwl3945_commit_rxon(priv);
953 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
954 struct ieee80211_tx_info *info,
956 struct sk_buff *skb_frag,
959 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
960 struct iwl3945_hw_key *keyinfo =
961 &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
963 switch (keyinfo->alg) {
965 tx->sec_ctl = TX_CMD_SEC_CCM;
966 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
967 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
972 tx->sec_ctl = TX_CMD_SEC_TKIP;
975 memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
978 memset(tx->tkip_mic.byte, 0, 8);
983 tx->sec_ctl = TX_CMD_SEC_WEP |
984 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
986 if (keyinfo->keylen == 13)
987 tx->sec_ctl |= TX_CMD_SEC_KEY128;
989 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
991 IWL_DEBUG_TX("Configuring packet for WEP encryption "
992 "with key %d\n", info->control.hw_key->hw_key_idx);
996 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
1002 * handle build REPLY_TX command notification.
1004 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
1005 struct iwl_cmd *cmd,
1006 struct ieee80211_tx_info *info,
1007 struct ieee80211_hdr *hdr, u8 std_id)
1009 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1010 __le32 tx_flags = tx->tx_flags;
1011 __le16 fc = hdr->frame_control;
1012 u8 rc_flags = info->control.rates[0].flags;
1014 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1015 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
1016 tx_flags |= TX_CMD_FLG_ACK_MSK;
1017 if (ieee80211_is_mgmt(fc))
1018 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1019 if (ieee80211_is_probe_resp(fc) &&
1020 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1021 tx_flags |= TX_CMD_FLG_TSF_MSK;
1023 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1024 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1027 tx->sta_id = std_id;
1028 if (ieee80211_has_morefrags(fc))
1029 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1031 if (ieee80211_is_data_qos(fc)) {
1032 u8 *qc = ieee80211_get_qos_ctl(hdr);
1033 tx->tid_tspec = qc[0] & 0xf;
1034 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1036 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1039 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
1040 tx_flags |= TX_CMD_FLG_RTS_MSK;
1041 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1042 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
1043 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1044 tx_flags |= TX_CMD_FLG_CTS_MSK;
1047 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1048 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1050 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1051 if (ieee80211_is_mgmt(fc)) {
1052 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
1053 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
1055 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
1057 tx->timeout.pm_frame_timeout = 0;
1058 #ifdef CONFIG_IWL3945_LEDS
1059 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
1063 tx->driver_txop = 0;
1064 tx->tx_flags = tx_flags;
1065 tx->next_frame_len = 0;
1069 * iwl3945_get_sta_id - Find station's index within station table
1071 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1074 u16 fc = le16_to_cpu(hdr->frame_control);
1076 /* If this frame is broadcast or management, use broadcast station id */
1077 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1078 is_multicast_ether_addr(hdr->addr1))
1079 return priv->hw_params.bcast_sta_id;
1081 switch (priv->iw_mode) {
1083 /* If we are a client station in a BSS network, use the special
1084 * AP station entry (that's the only station we communicate with) */
1085 case NL80211_IFTYPE_STATION:
1088 /* If we are an AP, then find the station, or use BCAST */
1089 case NL80211_IFTYPE_AP:
1090 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1091 if (sta_id != IWL_INVALID_STATION)
1093 return priv->hw_params.bcast_sta_id;
1095 /* If this frame is going out to an IBSS network, find the station,
1096 * or create a new station table entry */
1097 case NL80211_IFTYPE_ADHOC: {
1098 /* Create new station table entry */
1099 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1100 if (sta_id != IWL_INVALID_STATION)
1103 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
1105 if (sta_id != IWL_INVALID_STATION)
1108 IWL_DEBUG_DROP("Station %pM not in station map. "
1109 "Defaulting to broadcast...\n",
1111 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1112 return priv->hw_params.bcast_sta_id;
1114 /* If we are in monitor mode, use BCAST. This is required for
1115 * packet injection. */
1116 case NL80211_IFTYPE_MONITOR:
1117 return priv->hw_params.bcast_sta_id;
1120 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1122 return priv->hw_params.bcast_sta_id;
1127 * start REPLY_TX command process
1129 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
1131 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1132 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1133 struct iwl3945_tx_cmd *tx;
1134 struct iwl_tx_queue *txq = NULL;
1135 struct iwl_queue *q = NULL;
1136 struct iwl_cmd *out_cmd = NULL;
1137 dma_addr_t phys_addr;
1138 dma_addr_t txcmd_phys;
1139 int txq_id = skb_get_queue_mapping(skb);
1140 u16 len, idx, len_org, hdr_len;
1147 u8 wait_write_ptr = 0;
1149 unsigned long flags;
1152 spin_lock_irqsave(&priv->lock, flags);
1153 if (iwl_is_rfkill(priv)) {
1154 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1158 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1159 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1163 unicast = !is_multicast_ether_addr(hdr->addr1);
1166 fc = hdr->frame_control;
1168 #ifdef CONFIG_IWLWIFI_DEBUG
1169 if (ieee80211_is_auth(fc))
1170 IWL_DEBUG_TX("Sending AUTH frame\n");
1171 else if (ieee80211_is_assoc_req(fc))
1172 IWL_DEBUG_TX("Sending ASSOC frame\n");
1173 else if (ieee80211_is_reassoc_req(fc))
1174 IWL_DEBUG_TX("Sending REASSOC frame\n");
1177 /* drop all data frame if we are not associated */
1178 if (ieee80211_is_data(fc) &&
1179 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1180 (!iwl_is_associated(priv) ||
1181 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1182 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
1186 spin_unlock_irqrestore(&priv->lock, flags);
1188 hdr_len = ieee80211_hdrlen(fc);
1190 /* Find (or create) index into station table for destination station */
1191 sta_id = iwl3945_get_sta_id(priv, hdr);
1192 if (sta_id == IWL_INVALID_STATION) {
1193 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
1198 IWL_DEBUG_RATE("station Id %d\n", sta_id);
1200 if (ieee80211_is_data_qos(fc)) {
1201 qc = ieee80211_get_qos_ctl(hdr);
1202 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1203 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1205 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1207 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1211 /* Descriptor for chosen Tx queue */
1212 txq = &priv->txq[txq_id];
1215 spin_lock_irqsave(&priv->lock, flags);
1217 idx = get_cmd_index(q, q->write_ptr, 0);
1219 /* Set up driver data for this TFD */
1220 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1221 txq->txb[q->write_ptr].skb[0] = skb;
1223 /* Init first empty entry in queue's array of Tx/cmd buffers */
1224 out_cmd = txq->cmd[idx];
1225 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1226 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1227 memset(tx, 0, sizeof(*tx));
1230 * Set up the Tx-command (not MAC!) header.
1231 * Store the chosen Tx queue and TFD index within the sequence field;
1232 * after Tx, uCode's Tx response will return this value so driver can
1233 * locate the frame within the tx queue and do post-tx processing.
1235 out_cmd->hdr.cmd = REPLY_TX;
1236 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1237 INDEX_TO_SEQ(q->write_ptr)));
1239 /* Copy MAC header from skb into command buffer */
1240 memcpy(tx->hdr, hdr, hdr_len);
1243 * Use the first empty entry in this queue's command buffer array
1244 * to contain the Tx command and MAC header concatenated together
1245 * (payload data will be in another buffer).
1246 * Size of this varies, due to varying MAC header length.
1247 * If end is not dword aligned, we'll have 2 extra bytes at the end
1248 * of the MAC header (device reads on dword boundaries).
1249 * We'll tell device about this padding later.
1251 len = sizeof(struct iwl3945_tx_cmd) +
1252 sizeof(struct iwl_cmd_header) + hdr_len;
1255 len = (len + 3) & ~3;
1262 /* Physical address of this Tx command's header (not MAC header!),
1263 * within command buffer array. */
1264 txcmd_phys = pci_map_single(priv->pci_dev,
1265 out_cmd, sizeof(struct iwl_cmd),
1267 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1268 pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1269 /* Add buffer containing Tx command and MAC(!) header to TFD's
1271 txcmd_phys += offsetof(struct iwl_cmd, hdr);
1273 /* Add buffer containing Tx command and MAC(!) header to TFD's
1275 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1276 txcmd_phys, len, 1, 0);
1278 if (info->control.hw_key)
1279 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
1281 /* Set up TFD's 2nd entry to point directly to remainder of skb,
1282 * if any (802.11 null frames have no payload). */
1283 len = skb->len - hdr_len;
1285 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1286 len, PCI_DMA_TODEVICE);
1287 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1292 /* Total # bytes to be transmitted */
1293 len = (u16)skb->len;
1294 tx->len = cpu_to_le16(len);
1296 /* TODO need this for burst mode later on */
1297 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1299 /* set is_hcca to 0; it probably will never be implemented */
1300 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1302 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1303 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1305 if (!ieee80211_has_morefrags(hdr->frame_control)) {
1306 txq->need_update = 1;
1308 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1311 txq->need_update = 0;
1314 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1316 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1317 ieee80211_hdrlen(fc));
1319 /* Tell device the write index *just past* this latest filled TFD */
1320 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1321 rc = iwl_txq_update_write_ptr(priv, txq);
1322 spin_unlock_irqrestore(&priv->lock, flags);
1327 if ((iwl_queue_space(q) < q->high_mark)
1328 && priv->mac80211_registered) {
1329 if (wait_write_ptr) {
1330 spin_lock_irqsave(&priv->lock, flags);
1331 txq->need_update = 1;
1332 iwl_txq_update_write_ptr(priv, txq);
1333 spin_unlock_irqrestore(&priv->lock, flags);
1336 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
1342 spin_unlock_irqrestore(&priv->lock, flags);
1347 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1349 unsigned long flags;
1351 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1354 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1355 disable_radio ? "OFF" : "ON");
1357 if (disable_radio) {
1358 iwl_scan_cancel(priv);
1359 /* FIXME: This is a workaround for AP */
1360 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1361 spin_lock_irqsave(&priv->lock, flags);
1362 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1363 CSR_UCODE_SW_BIT_RFKILL);
1364 spin_unlock_irqrestore(&priv->lock, flags);
1365 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
1366 set_bit(STATUS_RF_KILL_SW, &priv->status);
1371 spin_lock_irqsave(&priv->lock, flags);
1372 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1374 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1375 spin_unlock_irqrestore(&priv->lock, flags);
1380 spin_lock_irqsave(&priv->lock, flags);
1381 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1382 if (!iwl_grab_nic_access(priv))
1383 iwl_release_nic_access(priv);
1384 spin_unlock_irqrestore(&priv->lock, flags);
1386 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1387 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1388 "disabled by HW switch\n");
1393 queue_work(priv->workqueue, &priv->restart);
1397 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1399 #include "iwl-spectrum.h"
1401 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1402 #define BEACON_TIME_MASK_HIGH 0xFF000000
1403 #define TIME_UNIT 1024
1406 * extended beacon time format
1407 * time in usec will be changed into a 32-bit value in 8:24 format
1408 * the high 1 byte is the beacon counts
1409 * the lower 3 bytes is the time in usec within one beacon interval
1412 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1416 u32 interval = beacon_interval * 1024;
1418 if (!interval || !usec)
1421 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1422 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1424 return (quot << 24) + rem;
1427 /* base is usually what we get from ucode with each received frame,
1428 * the same as HW timer counter counting down
1431 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1433 u32 base_low = base & BEACON_TIME_MASK_LOW;
1434 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1435 u32 interval = beacon_interval * TIME_UNIT;
1436 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1437 (addon & BEACON_TIME_MASK_HIGH);
1439 if (base_low > addon_low)
1440 res += base_low - addon_low;
1441 else if (base_low < addon_low) {
1442 res += interval + base_low - addon_low;
1447 return cpu_to_le32(res);
1450 static int iwl3945_get_measurement(struct iwl_priv *priv,
1451 struct ieee80211_measurement_params *params,
1454 struct iwl_spectrum_cmd spectrum;
1455 struct iwl_rx_packet *res;
1456 struct iwl_host_cmd cmd = {
1457 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1458 .data = (void *)&spectrum,
1459 .meta.flags = CMD_WANT_SKB,
1461 u32 add_time = le64_to_cpu(params->start_time);
1463 int spectrum_resp_status;
1464 int duration = le16_to_cpu(params->duration);
1466 if (iwl_is_associated(priv))
1468 iwl3945_usecs_to_beacons(
1469 le64_to_cpu(params->start_time) - priv->last_tsf,
1470 le16_to_cpu(priv->rxon_timing.beacon_interval));
1472 memset(&spectrum, 0, sizeof(spectrum));
1474 spectrum.channel_count = cpu_to_le16(1);
1476 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1477 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1478 cmd.len = sizeof(spectrum);
1479 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1481 if (iwl_is_associated(priv))
1482 spectrum.start_time =
1483 iwl3945_add_beacon_time(priv->last_beacon_time,
1485 le16_to_cpu(priv->rxon_timing.beacon_interval));
1487 spectrum.start_time = 0;
1489 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1490 spectrum.channels[0].channel = params->channel;
1491 spectrum.channels[0].type = type;
1492 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1493 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1494 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1496 rc = iwl_send_cmd_sync(priv, &cmd);
1500 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1501 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1502 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1506 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1507 switch (spectrum_resp_status) {
1508 case 0: /* Command will be handled */
1509 if (res->u.spectrum.id != 0xff) {
1510 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
1511 res->u.spectrum.id);
1512 priv->measurement_status &= ~MEASUREMENT_READY;
1514 priv->measurement_status |= MEASUREMENT_ACTIVE;
1518 case 1: /* Command will not be handled */
1523 dev_kfree_skb_any(cmd.meta.u.skb);
1529 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1530 struct iwl_rx_mem_buffer *rxb)
1532 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1533 struct iwl_alive_resp *palive;
1534 struct delayed_work *pwork;
1536 palive = &pkt->u.alive_frame;
1538 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1540 palive->is_valid, palive->ver_type,
1541 palive->ver_subtype);
1543 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1544 IWL_DEBUG_INFO("Initialization Alive received.\n");
1545 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1546 sizeof(struct iwl_alive_resp));
1547 pwork = &priv->init_alive_start;
1549 IWL_DEBUG_INFO("Runtime Alive received.\n");
1550 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1551 sizeof(struct iwl_alive_resp));
1552 pwork = &priv->alive_start;
1553 iwl3945_disable_events(priv);
1556 /* We delay the ALIVE response by 5ms to
1557 * give the HW RF Kill time to activate... */
1558 if (palive->is_valid == UCODE_VALID_OK)
1559 queue_delayed_work(priv->workqueue, pwork,
1560 msecs_to_jiffies(5));
1562 IWL_WARN(priv, "uCode did not respond OK.\n");
1565 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1566 struct iwl_rx_mem_buffer *rxb)
1568 #ifdef CONFIG_IWLWIFI_DEBUG
1569 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1572 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1576 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
1577 struct iwl_rx_mem_buffer *rxb)
1579 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1581 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1582 "seq 0x%04X ser 0x%08X\n",
1583 le32_to_cpu(pkt->u.err_resp.error_type),
1584 get_cmd_string(pkt->u.err_resp.cmd_id),
1585 pkt->u.err_resp.cmd_id,
1586 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1587 le32_to_cpu(pkt->u.err_resp.error_info));
1590 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
1591 struct iwl_rx_mem_buffer *rxb)
1593 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1594 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1595 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
1597 if (!report->state) {
1598 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
1599 "Spectrum Measure Notification: Start\n");
1603 memcpy(&priv->measure_report, report, sizeof(*report));
1604 priv->measurement_status |= MEASUREMENT_READY;
1608 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
1609 struct iwl_rx_mem_buffer *rxb)
1611 #ifdef CONFIG_IWLWIFI_DEBUG
1612 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1613 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1614 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1615 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1619 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1620 struct iwl_rx_mem_buffer *rxb)
1622 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1623 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1624 "notification for %s:\n",
1625 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1626 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
1627 le32_to_cpu(pkt->len));
1630 static void iwl3945_bg_beacon_update(struct work_struct *work)
1632 struct iwl_priv *priv =
1633 container_of(work, struct iwl_priv, beacon_update);
1634 struct sk_buff *beacon;
1636 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1637 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1640 IWL_ERR(priv, "update beacon failed\n");
1644 mutex_lock(&priv->mutex);
1645 /* new beacon skb is allocated every time; dispose previous.*/
1646 if (priv->ibss_beacon)
1647 dev_kfree_skb(priv->ibss_beacon);
1649 priv->ibss_beacon = beacon;
1650 mutex_unlock(&priv->mutex);
1652 iwl3945_send_beacon_cmd(priv);
1655 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1656 struct iwl_rx_mem_buffer *rxb)
1658 #ifdef CONFIG_IWLWIFI_DEBUG
1659 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1660 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1661 u8 rate = beacon->beacon_notify_hdr.rate;
1663 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1664 "tsf %d %d rate %d\n",
1665 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1666 beacon->beacon_notify_hdr.failure_frame,
1667 le32_to_cpu(beacon->ibss_mgr_status),
1668 le32_to_cpu(beacon->high_tsf),
1669 le32_to_cpu(beacon->low_tsf), rate);
1672 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1673 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1674 queue_work(priv->workqueue, &priv->beacon_update);
1677 /* Service response to REPLY_SCAN_CMD (0x80) */
1678 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
1679 struct iwl_rx_mem_buffer *rxb)
1681 #ifdef CONFIG_IWLWIFI_DEBUG
1682 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1683 struct iwl_scanreq_notification *notif =
1684 (struct iwl_scanreq_notification *)pkt->u.raw;
1686 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1690 /* Service SCAN_START_NOTIFICATION (0x82) */
1691 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
1692 struct iwl_rx_mem_buffer *rxb)
1694 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1695 struct iwl_scanstart_notification *notif =
1696 (struct iwl_scanstart_notification *)pkt->u.raw;
1697 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1698 IWL_DEBUG_SCAN("Scan start: "
1700 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1702 notif->band ? "bg" : "a",
1704 notif->tsf_low, notif->status, notif->beacon_timer);
1707 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1708 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
1709 struct iwl_rx_mem_buffer *rxb)
1711 #ifdef CONFIG_IWLWIFI_DEBUG
1712 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1713 struct iwl_scanresults_notification *notif =
1714 (struct iwl_scanresults_notification *)pkt->u.raw;
1717 IWL_DEBUG_SCAN("Scan ch.res: "
1719 "(TSF: 0x%08X:%08X) - %d "
1720 "elapsed=%lu usec (%dms since last)\n",
1722 notif->band ? "bg" : "a",
1723 le32_to_cpu(notif->tsf_high),
1724 le32_to_cpu(notif->tsf_low),
1725 le32_to_cpu(notif->statistics[0]),
1726 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1727 jiffies_to_msecs(elapsed_jiffies
1728 (priv->last_scan_jiffies, jiffies)));
1730 priv->last_scan_jiffies = jiffies;
1731 priv->next_scan_jiffies = 0;
1734 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1735 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
1736 struct iwl_rx_mem_buffer *rxb)
1738 #ifdef CONFIG_IWLWIFI_DEBUG
1739 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1740 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1743 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1744 scan_notif->scanned_channels,
1745 scan_notif->tsf_low,
1746 scan_notif->tsf_high, scan_notif->status);
1748 /* The HW is no longer scanning */
1749 clear_bit(STATUS_SCAN_HW, &priv->status);
1751 /* The scan completion notification came in, so kill that timer... */
1752 cancel_delayed_work(&priv->scan_check);
1754 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1755 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
1757 jiffies_to_msecs(elapsed_jiffies
1758 (priv->scan_pass_start, jiffies)));
1760 /* Remove this scanned band from the list of pending
1761 * bands to scan, band G precedes A in order of scanning
1762 * as seen in iwl3945_bg_request_scan */
1763 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
1764 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
1765 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
1766 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
1768 /* If a request to abort was given, or the scan did not succeed
1769 * then we reset the scan state machine and terminate,
1770 * re-queuing another scan if one has been requested */
1771 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1772 IWL_DEBUG_INFO("Aborted scan completed.\n");
1773 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1775 /* If there are more bands on this scan pass reschedule */
1776 if (priv->scan_bands > 0)
1780 priv->last_scan_jiffies = jiffies;
1781 priv->next_scan_jiffies = 0;
1782 IWL_DEBUG_INFO("Setting scan to off\n");
1784 clear_bit(STATUS_SCANNING, &priv->status);
1786 IWL_DEBUG_INFO("Scan took %dms\n",
1787 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1789 queue_work(priv->workqueue, &priv->scan_completed);
1794 priv->scan_pass_start = jiffies;
1795 queue_work(priv->workqueue, &priv->request_scan);
1798 /* Handle notification from uCode that card's power state is changing
1799 * due to software, hardware, or critical temperature RFKILL */
1800 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1801 struct iwl_rx_mem_buffer *rxb)
1803 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1804 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1805 unsigned long status = priv->status;
1807 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1808 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1809 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1811 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1812 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1814 if (flags & HW_CARD_DISABLED)
1815 set_bit(STATUS_RF_KILL_HW, &priv->status);
1817 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1820 if (flags & SW_CARD_DISABLED)
1821 set_bit(STATUS_RF_KILL_SW, &priv->status);
1823 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1825 iwl_scan_cancel(priv);
1827 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1828 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1829 (test_bit(STATUS_RF_KILL_SW, &status) !=
1830 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1831 queue_work(priv->workqueue, &priv->rf_kill);
1833 wake_up_interruptible(&priv->wait_command_queue);
1837 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1839 * Setup the RX handlers for each of the reply types sent from the uCode
1842 * This function chains into the hardware specific files for them to setup
1843 * any hardware specific handlers as well.
1845 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1847 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1848 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1849 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
1850 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1851 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1852 iwl3945_rx_spectrum_measure_notif;
1853 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
1854 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1855 iwl3945_rx_pm_debug_statistics_notif;
1856 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1859 * The same handler is used for both the REPLY to a discrete
1860 * statistics request from the host as well as for the periodic
1861 * statistics notifications (after received beacons) from the uCode.
1863 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1864 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1866 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
1867 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
1868 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1869 iwl3945_rx_scan_results_notif;
1870 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1871 iwl3945_rx_scan_complete_notif;
1872 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1874 /* Set up hardware specific Rx handlers */
1875 iwl3945_hw_rx_handler_setup(priv);
1879 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
1880 * When FW advances 'R' index, all entries between old and new 'R' index
1881 * need to be reclaimed.
1883 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
1884 int txq_id, int index)
1886 struct iwl_tx_queue *txq = &priv->txq[txq_id];
1887 struct iwl_queue *q = &txq->q;
1890 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1891 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
1892 "is out of range [0-%d] %d %d.\n", txq_id,
1893 index, q->n_bd, q->write_ptr, q->read_ptr);
1897 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
1898 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1900 IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
1901 q->write_ptr, q->read_ptr);
1902 queue_work(priv->workqueue, &priv->restart);
1911 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
1912 * @rxb: Rx buffer to reclaim
1914 * If an Rx buffer has an async callback associated with it the callback
1915 * will be executed. The attached skb (if present) will only be freed
1916 * if the callback returns 1
1918 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
1919 struct iwl_rx_mem_buffer *rxb)
1921 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1922 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1923 int txq_id = SEQ_TO_QUEUE(sequence);
1924 int index = SEQ_TO_INDEX(sequence);
1925 int huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
1927 struct iwl_cmd *cmd;
1929 if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
1930 "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
1932 priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
1933 priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
1934 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
1938 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
1939 cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
1941 /* Input error checking is done when commands are added to queue. */
1942 if (cmd->meta.flags & CMD_WANT_SKB) {
1943 cmd->meta.source->u.skb = rxb->skb;
1945 } else if (cmd->meta.u.callback &&
1946 !cmd->meta.u.callback(priv, cmd, rxb->skb))
1949 iwl3945_cmd_queue_reclaim(priv, txq_id, index);
1951 if (!(cmd->meta.flags & CMD_ASYNC)) {
1952 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1953 wake_up_interruptible(&priv->wait_command_queue);
1957 /************************** RX-FUNCTIONS ****************************/
1959 * Rx theory of operation
1961 * The host allocates 32 DMA target addresses and passes the host address
1962 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1966 * The host/firmware share two index registers for managing the Rx buffers.
1968 * The READ index maps to the first position that the firmware may be writing
1969 * to -- the driver can read up to (but not including) this position and get
1971 * The READ index is managed by the firmware once the card is enabled.
1973 * The WRITE index maps to the last position the driver has read from -- the
1974 * position preceding WRITE is the last slot the firmware can place a packet.
1976 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1979 * During initialization, the host sets up the READ queue position to the first
1980 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1982 * When the firmware places a packet in a buffer, it will advance the READ index
1983 * and fire the RX interrupt. The driver can then query the READ index and
1984 * process as many packets as possible, moving the WRITE index forward as it
1985 * resets the Rx queue buffers with new memory.
1987 * The management in the driver is as follows:
1988 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1989 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1990 * to replenish the iwl->rxq->rx_free.
1991 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1992 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1993 * 'processed' and 'read' driver indexes as well)
1994 * + A received packet is processed and handed to the kernel network stack,
1995 * detached from the iwl->rxq. The driver 'processed' index is updated.
1996 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1997 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1998 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1999 * were enough free buffers and RX_STALLED is set it is cleared.
2004 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
2005 * iwl3945_rx_queue_restock
2006 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
2007 * queue, updates firmware pointers, and updates
2008 * the WRITE index. If insufficient rx_free buffers
2009 * are available, schedules iwl3945_rx_replenish
2011 * -- enable interrupts --
2012 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
2013 * READ INDEX, detaching the SKB from the pool.
2014 * Moves the packet buffer from queue to rx_used.
2015 * Calls iwl3945_rx_queue_restock to refill any empty
2022 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
2024 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
2025 dma_addr_t dma_addr)
2027 return cpu_to_le32((u32)dma_addr);
2031 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
2033 * If there are slots in the RX queue that need to be restocked,
2034 * and we have free pre-allocated buffers, fill the ranks as much
2035 * as we can, pulling from rx_free.
2037 * This moves the 'write' index forward to catch up with 'processed', and
2038 * also updates the memory address in the firmware to reference the new
2041 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
2043 struct iwl_rx_queue *rxq = &priv->rxq;
2044 struct list_head *element;
2045 struct iwl_rx_mem_buffer *rxb;
2046 unsigned long flags;
2049 spin_lock_irqsave(&rxq->lock, flags);
2050 write = rxq->write & ~0x7;
2051 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
2052 /* Get next free Rx buffer, remove from free list */
2053 element = rxq->rx_free.next;
2054 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2057 /* Point to Rx buffer via next RBD in circular buffer */
2058 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
2059 rxq->queue[rxq->write] = rxb;
2060 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
2063 spin_unlock_irqrestore(&rxq->lock, flags);
2064 /* If the pre-allocated buffer pool is dropping low, schedule to
2066 if (rxq->free_count <= RX_LOW_WATERMARK)
2067 queue_work(priv->workqueue, &priv->rx_replenish);
2070 /* If we've added more space for the firmware to place data, tell it.
2071 * Increment device's write pointer in multiples of 8. */
2072 if ((write != (rxq->write & ~0x7))
2073 || (abs(rxq->write - rxq->read) > 7)) {
2074 spin_lock_irqsave(&rxq->lock, flags);
2075 rxq->need_update = 1;
2076 spin_unlock_irqrestore(&rxq->lock, flags);
2077 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
2086 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
2088 * When moving to rx_free an SKB is allocated for the slot.
2090 * Also restock the Rx queue via iwl3945_rx_queue_restock.
2091 * This is called as a scheduled work item (except for during initialization)
2093 static void iwl3945_rx_allocate(struct iwl_priv *priv)
2095 struct iwl_rx_queue *rxq = &priv->rxq;
2096 struct list_head *element;
2097 struct iwl_rx_mem_buffer *rxb;
2098 unsigned long flags;
2099 spin_lock_irqsave(&rxq->lock, flags);
2100 while (!list_empty(&rxq->rx_used)) {
2101 element = rxq->rx_used.next;
2102 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2104 /* Alloc a new receive buffer */
2106 alloc_skb(priv->hw_params.rx_buf_size,
2107 __GFP_NOWARN | GFP_ATOMIC);
2109 if (net_ratelimit())
2110 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
2111 /* We don't reschedule replenish work here -- we will
2112 * call the restock method and if it still needs
2113 * more buffers it will schedule replenish */
2117 /* If radiotap head is required, reserve some headroom here.
2118 * The physical head count is a variable rx_stats->phy_count.
2119 * We reserve 4 bytes here. Plus these extra bytes, the
2120 * headroom of the physical head should be enough for the
2121 * radiotap head that iwl3945 supported. See iwl3945_rt.
2123 skb_reserve(rxb->skb, 4);
2125 priv->alloc_rxb_skb++;
2128 /* Get physical address of RB/SKB */
2129 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
2131 priv->hw_params.rx_buf_size,
2132 PCI_DMA_FROMDEVICE);
2133 list_add_tail(&rxb->list, &rxq->rx_free);
2136 spin_unlock_irqrestore(&rxq->lock, flags);
2140 * this should be called while priv->lock is locked
2142 static void __iwl3945_rx_replenish(void *data)
2144 struct iwl_priv *priv = data;
2146 iwl3945_rx_allocate(priv);
2147 iwl3945_rx_queue_restock(priv);
2151 void iwl3945_rx_replenish(void *data)
2153 struct iwl_priv *priv = data;
2154 unsigned long flags;
2156 iwl3945_rx_allocate(priv);
2158 spin_lock_irqsave(&priv->lock, flags);
2159 iwl3945_rx_queue_restock(priv);
2160 spin_unlock_irqrestore(&priv->lock, flags);
2163 /* Convert linear signal-to-noise ratio into dB */
2164 static u8 ratio2dB[100] = {
2165 /* 0 1 2 3 4 5 6 7 8 9 */
2166 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2167 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2168 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2169 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2170 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2171 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2172 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2173 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2174 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2175 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2178 /* Calculates a relative dB value from a ratio of linear
2179 * (i.e. not dB) signal levels.
2180 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2181 int iwl3945_calc_db_from_ratio(int sig_ratio)
2183 /* 1000:1 or higher just report as 60 dB */
2184 if (sig_ratio >= 1000)
2187 /* 100:1 or higher, divide by 10 and use table,
2188 * add 20 dB to make up for divide by 10 */
2189 if (sig_ratio >= 100)
2190 return 20 + (int)ratio2dB[sig_ratio/10];
2192 /* We shouldn't see this */
2196 /* Use table for ratios 1:1 - 99:1 */
2197 return (int)ratio2dB[sig_ratio];
2200 #define PERFECT_RSSI (-20) /* dBm */
2201 #define WORST_RSSI (-95) /* dBm */
2202 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2204 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2205 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2206 * about formulas used below. */
2207 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
2210 int degradation = PERFECT_RSSI - rssi_dbm;
2212 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2213 * as indicator; formula is (signal dbm - noise dbm).
2214 * SNR at or above 40 is a great signal (100%).
2215 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2216 * Weakest usable signal is usually 10 - 15 dB SNR. */
2218 if (rssi_dbm - noise_dbm >= 40)
2220 else if (rssi_dbm < noise_dbm)
2222 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2224 /* Else use just the signal level.
2225 * This formula is a least squares fit of data points collected and
2226 * compared with a reference system that had a percentage (%) display
2227 * for signal quality. */
2229 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2230 (15 * RSSI_RANGE + 62 * degradation)) /
2231 (RSSI_RANGE * RSSI_RANGE);
2235 else if (sig_qual < 1)
2242 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
2244 * Uses the priv->rx_handlers callback function array to invoke
2245 * the appropriate handlers, including command responses,
2246 * frame-received notifications, and other notifications.
2248 static void iwl3945_rx_handle(struct iwl_priv *priv)
2250 struct iwl_rx_mem_buffer *rxb;
2251 struct iwl_rx_packet *pkt;
2252 struct iwl_rx_queue *rxq = &priv->rxq;
2255 unsigned long flags;
2259 /* uCode's read index (stored in shared DRAM) indicates the last Rx
2260 * buffer that the driver may process (last buffer filled by ucode). */
2261 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
2264 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2266 /* Rx interrupt, but nothing sent from uCode */
2268 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
2271 rxb = rxq->queue[i];
2273 /* If an RXB doesn't have a Rx queue slot associated with it,
2274 * then a bug has been introduced in the queue refilling
2275 * routines -- catch it here */
2276 BUG_ON(rxb == NULL);
2278 rxq->queue[i] = NULL;
2280 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
2281 priv->hw_params.rx_buf_size,
2282 PCI_DMA_FROMDEVICE);
2283 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2285 /* Reclaim a command buffer only if this packet is a response
2286 * to a (driver-originated) command.
2287 * If the packet (e.g. Rx frame) originated from uCode,
2288 * there is no command buffer to reclaim.
2289 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2290 * but apparently a few don't get set; catch them here. */
2291 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2292 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2293 (pkt->hdr.cmd != REPLY_TX);
2295 /* Based on type of command response or notification,
2296 * handle those that need handling via function in
2297 * rx_handlers table. See iwl3945_setup_rx_handlers() */
2298 if (priv->rx_handlers[pkt->hdr.cmd]) {
2299 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2300 "r = %d, i = %d, %s, 0x%02x\n", r, i,
2301 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2302 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2304 /* No handling needed */
2305 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2306 "r %d i %d No handler needed for %s, 0x%02x\n",
2307 r, i, get_cmd_string(pkt->hdr.cmd),
2312 /* Invoke any callbacks, transfer the skb to caller, and
2313 * fire off the (possibly) blocking iwl_send_cmd()
2314 * as we reclaim the driver command queue */
2315 if (rxb && rxb->skb)
2316 iwl3945_tx_cmd_complete(priv, rxb);
2318 IWL_WARN(priv, "Claim null rxb?\n");
2321 /* For now we just don't re-use anything. We can tweak this
2322 * later to try and re-use notification packets and SKBs that
2323 * fail to Rx correctly */
2324 if (rxb->skb != NULL) {
2325 priv->alloc_rxb_skb--;
2326 dev_kfree_skb_any(rxb->skb);
2330 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
2331 priv->hw_params.rx_buf_size,
2332 PCI_DMA_FROMDEVICE);
2333 spin_lock_irqsave(&rxq->lock, flags);
2334 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2335 spin_unlock_irqrestore(&rxq->lock, flags);
2336 i = (i + 1) & RX_QUEUE_MASK;
2337 /* If there are a lot of unused frames,
2338 * restock the Rx queue so ucode won't assert. */
2343 __iwl3945_rx_replenish(priv);
2349 /* Backtrack one entry */
2351 iwl3945_rx_queue_restock(priv);
2354 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
2356 IWL_DEBUG_ISR("Enabling interrupts\n");
2357 set_bit(STATUS_INT_ENABLED, &priv->status);
2358 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2362 /* call this function to flush any scheduled tasklet */
2363 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2365 /* wait to make sure we flush pending tasklet*/
2366 synchronize_irq(priv->pci_dev->irq);
2367 tasklet_kill(&priv->irq_tasklet);
2371 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
2373 clear_bit(STATUS_INT_ENABLED, &priv->status);
2375 /* disable interrupts from uCode/NIC to host */
2376 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2378 /* acknowledge/clear/reset any interrupts still pending
2379 * from uCode or flow handler (Rx/Tx DMA) */
2380 iwl_write32(priv, CSR_INT, 0xffffffff);
2381 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2382 IWL_DEBUG_ISR("Disabled interrupts\n");
2385 static const char *desc_lookup(int i)
2393 return "BAD_CHECKSUM";
2395 return "NMI_INTERRUPT";
2399 return "FATAL_ERROR";
2405 #define ERROR_START_OFFSET (1 * sizeof(u32))
2406 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2408 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
2411 u32 desc, time, count, base, data1;
2412 u32 blink1, blink2, ilink1, ilink2;
2415 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2417 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2418 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
2422 rc = iwl_grab_nic_access(priv);
2424 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2428 count = iwl_read_targ_mem(priv, base);
2430 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2431 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2432 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2433 priv->status, count);
2436 IWL_ERR(priv, "Desc Time asrtPC blink2 "
2437 "ilink1 nmiPC Line\n");
2438 for (i = ERROR_START_OFFSET;
2439 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
2440 i += ERROR_ELEM_SIZE) {
2441 desc = iwl_read_targ_mem(priv, base + i);
2443 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
2445 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
2447 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
2449 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
2451 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
2453 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
2456 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
2457 desc_lookup(desc), desc, time, blink1, blink2,
2458 ilink1, ilink2, data1);
2461 iwl_release_nic_access(priv);
2465 #define EVENT_START_OFFSET (6 * sizeof(u32))
2468 * iwl3945_print_event_log - Dump error event log to syslog
2470 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2472 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
2473 u32 num_events, u32 mode)
2476 u32 base; /* SRAM byte address of event log header */
2477 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2478 u32 ptr; /* SRAM byte address of log data */
2479 u32 ev, time, data; /* event log data */
2481 if (num_events == 0)
2484 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2487 event_size = 2 * sizeof(u32);
2489 event_size = 3 * sizeof(u32);
2491 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2493 /* "time" is actually "data" for mode 0 (no timestamp).
2494 * place event id # at far right for easier visual parsing. */
2495 for (i = 0; i < num_events; i++) {
2496 ev = iwl_read_targ_mem(priv, ptr);
2498 time = iwl_read_targ_mem(priv, ptr);
2502 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2504 data = iwl_read_targ_mem(priv, ptr);
2506 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2511 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2514 u32 base; /* SRAM byte address of event log header */
2515 u32 capacity; /* event log capacity in # entries */
2516 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2517 u32 num_wraps; /* # times uCode wrapped to top of log */
2518 u32 next_entry; /* index of next entry to be written by uCode */
2519 u32 size; /* # entries that we'll print */
2521 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2522 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2523 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2527 rc = iwl_grab_nic_access(priv);
2529 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2533 /* event log header */
2534 capacity = iwl_read_targ_mem(priv, base);
2535 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2536 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2537 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2539 size = num_wraps ? capacity : next_entry;
2541 /* bail out if nothing in log */
2543 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2544 iwl_release_nic_access(priv);
2548 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
2551 /* if uCode has wrapped back to top of log, start at the oldest entry,
2552 * i.e the next one that uCode would fill. */
2554 iwl3945_print_event_log(priv, next_entry,
2555 capacity - next_entry, mode);
2557 /* (then/else) start at top of log */
2558 iwl3945_print_event_log(priv, 0, next_entry, mode);
2560 iwl_release_nic_access(priv);
2563 static void iwl3945_error_recovery(struct iwl_priv *priv)
2565 unsigned long flags;
2567 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2568 sizeof(priv->staging_rxon));
2569 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2570 iwl3945_commit_rxon(priv);
2572 iwl3945_add_station(priv, priv->bssid, 1, 0);
2574 spin_lock_irqsave(&priv->lock, flags);
2575 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2576 priv->error_recovering = 0;
2577 spin_unlock_irqrestore(&priv->lock, flags);
2580 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
2582 u32 inta, handled = 0;
2584 unsigned long flags;
2585 #ifdef CONFIG_IWLWIFI_DEBUG
2589 spin_lock_irqsave(&priv->lock, flags);
2591 /* Ack/clear/reset pending uCode interrupts.
2592 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2593 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2594 inta = iwl_read32(priv, CSR_INT);
2595 iwl_write32(priv, CSR_INT, inta);
2597 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2598 * Any new interrupts that happen after this, either while we're
2599 * in this tasklet, or later, will show up in next ISR/tasklet. */
2600 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2601 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2603 #ifdef CONFIG_IWLWIFI_DEBUG
2604 if (priv->debug_level & IWL_DL_ISR) {
2605 /* just for debug */
2606 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2607 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2608 inta, inta_mask, inta_fh);
2612 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2613 * atomic, make sure that inta covers all the interrupts that
2614 * we've discovered, even if FH interrupt came in just after
2615 * reading CSR_INT. */
2616 if (inta_fh & CSR39_FH_INT_RX_MASK)
2617 inta |= CSR_INT_BIT_FH_RX;
2618 if (inta_fh & CSR39_FH_INT_TX_MASK)
2619 inta |= CSR_INT_BIT_FH_TX;
2621 /* Now service all interrupt bits discovered above. */
2622 if (inta & CSR_INT_BIT_HW_ERR) {
2623 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
2625 /* Tell the device to stop sending interrupts */
2626 iwl3945_disable_interrupts(priv);
2628 iwl_irq_handle_error(priv);
2630 handled |= CSR_INT_BIT_HW_ERR;
2632 spin_unlock_irqrestore(&priv->lock, flags);
2637 #ifdef CONFIG_IWLWIFI_DEBUG
2638 if (priv->debug_level & (IWL_DL_ISR)) {
2639 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2640 if (inta & CSR_INT_BIT_SCD)
2641 IWL_DEBUG_ISR("Scheduler finished to transmit "
2642 "the frame/frames.\n");
2644 /* Alive notification via Rx interrupt will do the real work */
2645 if (inta & CSR_INT_BIT_ALIVE)
2646 IWL_DEBUG_ISR("Alive interrupt\n");
2649 /* Safely ignore these bits for debug checks below */
2650 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2652 /* Error detected by uCode */
2653 if (inta & CSR_INT_BIT_SW_ERR) {
2654 IWL_ERR(priv, "Microcode SW error detected. "
2655 "Restarting 0x%X.\n", inta);
2656 iwl_irq_handle_error(priv);
2657 handled |= CSR_INT_BIT_SW_ERR;
2660 /* uCode wakes up after power-down sleep */
2661 if (inta & CSR_INT_BIT_WAKEUP) {
2662 IWL_DEBUG_ISR("Wakeup interrupt\n");
2663 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2664 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2665 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2666 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2667 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2668 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2669 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2671 handled |= CSR_INT_BIT_WAKEUP;
2674 /* All uCode command responses, including Tx command responses,
2675 * Rx "responses" (frame-received notification), and other
2676 * notifications from uCode come through here*/
2677 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2678 iwl3945_rx_handle(priv);
2679 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2682 if (inta & CSR_INT_BIT_FH_TX) {
2683 IWL_DEBUG_ISR("Tx interrupt\n");
2685 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
2686 if (!iwl_grab_nic_access(priv)) {
2687 iwl_write_direct32(priv, FH39_TCSR_CREDIT
2688 (FH39_SRVC_CHNL), 0x0);
2689 iwl_release_nic_access(priv);
2691 handled |= CSR_INT_BIT_FH_TX;
2694 if (inta & ~handled)
2695 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
2697 if (inta & ~CSR_INI_SET_MASK) {
2698 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
2699 inta & ~CSR_INI_SET_MASK);
2700 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
2703 /* Re-enable all interrupts */
2704 /* only Re-enable if disabled by irq */
2705 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2706 iwl3945_enable_interrupts(priv);
2708 #ifdef CONFIG_IWLWIFI_DEBUG
2709 if (priv->debug_level & (IWL_DL_ISR)) {
2710 inta = iwl_read32(priv, CSR_INT);
2711 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2712 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2713 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2714 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2717 spin_unlock_irqrestore(&priv->lock, flags);
2720 static irqreturn_t iwl3945_isr(int irq, void *data)
2722 struct iwl_priv *priv = data;
2723 u32 inta, inta_mask;
2728 spin_lock(&priv->lock);
2730 /* Disable (but don't clear!) interrupts here to avoid
2731 * back-to-back ISRs and sporadic interrupts from our NIC.
2732 * If we have something to service, the tasklet will re-enable ints.
2733 * If we *don't* have something, we'll re-enable before leaving here. */
2734 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2735 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2737 /* Discover which interrupts are active/pending */
2738 inta = iwl_read32(priv, CSR_INT);
2739 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2741 /* Ignore interrupt if there's nothing in NIC to service.
2742 * This may be due to IRQ shared with another device,
2743 * or due to sporadic interrupts thrown from our NIC. */
2744 if (!inta && !inta_fh) {
2745 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2749 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2750 /* Hardware disappeared */
2751 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2755 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2756 inta, inta_mask, inta_fh);
2758 inta &= ~CSR_INT_BIT_SCD;
2760 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
2761 if (likely(inta || inta_fh))
2762 tasklet_schedule(&priv->irq_tasklet);
2764 spin_unlock(&priv->lock);
2769 /* re-enable interrupts here since we don't have anything to service. */
2770 /* only Re-enable if disabled by irq */
2771 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2772 iwl3945_enable_interrupts(priv);
2773 spin_unlock(&priv->lock);
2777 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2778 enum ieee80211_band band,
2779 u8 is_active, u8 n_probes,
2780 struct iwl3945_scan_channel *scan_ch)
2782 const struct ieee80211_channel *channels = NULL;
2783 const struct ieee80211_supported_band *sband;
2784 const struct iwl_channel_info *ch_info;
2785 u16 passive_dwell = 0;
2786 u16 active_dwell = 0;
2789 sband = iwl_get_hw_mode(priv, band);
2793 channels = sband->channels;
2795 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2796 passive_dwell = iwl_get_passive_dwell_time(priv, band);
2798 if (passive_dwell <= active_dwell)
2799 passive_dwell = active_dwell + 1;
2801 for (i = 0, added = 0; i < sband->n_channels; i++) {
2802 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2805 scan_ch->channel = channels[i].hw_value;
2807 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2808 if (!is_channel_valid(ch_info)) {
2809 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
2814 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2815 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2816 /* If passive , set up for auto-switch
2817 * and use long active_dwell time.
2819 if (!is_active || is_channel_passive(ch_info) ||
2820 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2821 scan_ch->type = 0; /* passive */
2822 if (IWL_UCODE_API(priv->ucode_ver) == 1)
2823 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2825 scan_ch->type = 1; /* active */
2828 /* Set direct probe bits. These may be used both for active
2829 * scan channels (probes gets sent right away),
2830 * or for passive channels (probes get se sent only after
2831 * hearing clear Rx packet).*/
2832 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2834 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2836 /* uCode v1 does not allow setting direct probe bits on
2837 * passive channel. */
2838 if ((scan_ch->type & 1) && n_probes)
2839 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2842 /* Set txpower levels to defaults */
2843 scan_ch->tpc.dsp_atten = 110;
2844 /* scan_pwr_info->tpc.dsp_atten; */
2846 /*scan_pwr_info->tpc.tx_gain; */
2847 if (band == IEEE80211_BAND_5GHZ)
2848 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2850 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2851 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2853 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2857 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2859 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2860 (scan_ch->type & 1) ?
2861 active_dwell : passive_dwell);
2867 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2871 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2872 struct ieee80211_rate *rates)
2876 for (i = 0; i < IWL_RATE_COUNT; i++) {
2877 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2878 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2879 rates[i].hw_value_short = i;
2881 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2883 * If CCK != 1M then set short preamble rate flag.
2885 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2886 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2891 /******************************************************************************
2893 * uCode download functions
2895 ******************************************************************************/
2897 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2899 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2900 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2901 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2902 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2903 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2904 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2908 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2909 * looking at all data.
2911 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2918 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
2920 rc = iwl_grab_nic_access(priv);
2924 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2925 IWL39_RTC_INST_LOWER_BOUND);
2928 for (; len > 0; len -= sizeof(u32), image++) {
2929 /* read data comes through single port, auto-incr addr */
2930 /* NOTE: Use the debugless read so we don't flood kernel log
2931 * if IWL_DL_IO is set */
2932 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2933 if (val != le32_to_cpu(*image)) {
2934 IWL_ERR(priv, "uCode INST section is invalid at "
2935 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2936 save_len - len, val, le32_to_cpu(*image));
2944 iwl_release_nic_access(priv);
2947 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
2954 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2955 * using sample data 100 bytes apart. If these sample points are good,
2956 * it's a pretty good bet that everything between them is good, too.
2958 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2965 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
2967 rc = iwl_grab_nic_access(priv);
2971 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2972 /* read data comes through single port, auto-incr addr */
2973 /* NOTE: Use the debugless read so we don't flood kernel log
2974 * if IWL_DL_IO is set */
2975 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2976 i + IWL39_RTC_INST_LOWER_BOUND);
2977 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2978 if (val != le32_to_cpu(*image)) {
2979 #if 0 /* Enable this if you want to see details */
2980 IWL_ERR(priv, "uCode INST section is invalid at "
2981 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2991 iwl_release_nic_access(priv);
2998 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2999 * and verify its contents
3001 static int iwl3945_verify_ucode(struct iwl_priv *priv)
3008 image = (__le32 *)priv->ucode_boot.v_addr;
3009 len = priv->ucode_boot.len;
3010 rc = iwl3945_verify_inst_sparse(priv, image, len);
3012 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
3016 /* Try initialize */
3017 image = (__le32 *)priv->ucode_init.v_addr;
3018 len = priv->ucode_init.len;
3019 rc = iwl3945_verify_inst_sparse(priv, image, len);
3021 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
3025 /* Try runtime/protocol */
3026 image = (__le32 *)priv->ucode_code.v_addr;
3027 len = priv->ucode_code.len;
3028 rc = iwl3945_verify_inst_sparse(priv, image, len);
3030 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
3034 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
3036 /* Since nothing seems to match, show first several data entries in
3037 * instruction SRAM, so maybe visual inspection will give a clue.
3038 * Selection of bootstrap image (vs. other images) is arbitrary. */
3039 image = (__le32 *)priv->ucode_boot.v_addr;
3040 len = priv->ucode_boot.len;
3041 rc = iwl3945_verify_inst_full(priv, image, len);
3046 static void iwl3945_nic_start(struct iwl_priv *priv)
3048 /* Remove all resets to allow NIC to operate */
3049 iwl_write32(priv, CSR_RESET, 0);
3053 * iwl3945_read_ucode - Read uCode images from disk file.
3055 * Copy into buffers for card to fetch via bus-mastering
3057 static int iwl3945_read_ucode(struct iwl_priv *priv)
3059 struct iwl_ucode *ucode;
3060 int ret = -EINVAL, index;
3061 const struct firmware *ucode_raw;
3062 /* firmware file name contains uCode/driver compatibility version */
3063 const char *name_pre = priv->cfg->fw_name_pre;
3064 const unsigned int api_max = priv->cfg->ucode_api_max;
3065 const unsigned int api_min = priv->cfg->ucode_api_min;
3069 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
3071 /* Ask kernel firmware_class module to get the boot firmware off disk.
3072 * request_firmware() is synchronous, file is in memory on return. */
3073 for (index = api_max; index >= api_min; index--) {
3074 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
3075 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
3077 IWL_ERR(priv, "%s firmware file req failed: %d\n",
3084 if (index < api_max)
3085 IWL_ERR(priv, "Loaded firmware %s, "
3086 "which is deprecated. "
3087 " Please use API v%u instead.\n",
3089 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3090 buf, ucode_raw->size);
3098 /* Make sure that we got at least our header! */
3099 if (ucode_raw->size < sizeof(*ucode)) {
3100 IWL_ERR(priv, "File size way too small!\n");
3105 /* Data from ucode file: header followed by uCode images */
3106 ucode = (void *)ucode_raw->data;
3108 priv->ucode_ver = le32_to_cpu(ucode->ver);
3109 api_ver = IWL_UCODE_API(priv->ucode_ver);
3110 inst_size = le32_to_cpu(ucode->inst_size);
3111 data_size = le32_to_cpu(ucode->data_size);
3112 init_size = le32_to_cpu(ucode->init_size);
3113 init_data_size = le32_to_cpu(ucode->init_data_size);
3114 boot_size = le32_to_cpu(ucode->boot_size);
3116 /* api_ver should match the api version forming part of the
3117 * firmware filename ... but we don't check for that and only rely
3118 * on the API version read from firware header from here on forward */
3120 if (api_ver < api_min || api_ver > api_max) {
3121 IWL_ERR(priv, "Driver unable to support your firmware API. "
3122 "Driver supports v%u, firmware is v%u.\n",
3124 priv->ucode_ver = 0;
3128 if (api_ver != api_max)
3129 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
3130 "got %u. New firmware can be obtained "
3131 "from http://www.intellinuxwireless.org.\n",
3134 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
3135 IWL_UCODE_MAJOR(priv->ucode_ver),
3136 IWL_UCODE_MINOR(priv->ucode_ver),
3137 IWL_UCODE_API(priv->ucode_ver),
3138 IWL_UCODE_SERIAL(priv->ucode_ver));
3140 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
3142 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
3143 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
3144 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
3145 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
3146 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
3149 /* Verify size of file vs. image size info in file's header */
3150 if (ucode_raw->size < sizeof(*ucode) +
3151 inst_size + data_size + init_size +
3152 init_data_size + boot_size) {
3154 IWL_DEBUG_INFO("uCode file size %d too small\n",
3155 (int)ucode_raw->size);
3160 /* Verify that uCode images will fit in card's SRAM */
3161 if (inst_size > IWL39_MAX_INST_SIZE) {
3162 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3168 if (data_size > IWL39_MAX_DATA_SIZE) {
3169 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3174 if (init_size > IWL39_MAX_INST_SIZE) {
3175 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
3180 if (init_data_size > IWL39_MAX_DATA_SIZE) {
3181 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
3186 if (boot_size > IWL39_MAX_BSM_SIZE) {
3187 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
3193 /* Allocate ucode buffers for card's bus-master loading ... */
3195 /* Runtime instructions and 2 copies of data:
3196 * 1) unmodified from disk
3197 * 2) backup cache for save/restore during power-downs */
3198 priv->ucode_code.len = inst_size;
3199 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3201 priv->ucode_data.len = data_size;
3202 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3204 priv->ucode_data_backup.len = data_size;
3205 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3207 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
3208 !priv->ucode_data_backup.v_addr)
3211 /* Initialization instructions and data */
3212 if (init_size && init_data_size) {
3213 priv->ucode_init.len = init_size;
3214 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3216 priv->ucode_init_data.len = init_data_size;
3217 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3219 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3223 /* Bootstrap (instructions only, no data) */
3225 priv->ucode_boot.len = boot_size;
3226 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3228 if (!priv->ucode_boot.v_addr)
3232 /* Copy images into buffers for card's bus-master reads ... */
3234 /* Runtime instructions (first block of data in file) */
3235 src = &ucode->data[0];
3236 len = priv->ucode_code.len;
3237 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3238 memcpy(priv->ucode_code.v_addr, src, len);
3239 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3240 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3242 /* Runtime data (2nd block)
3243 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
3244 src = &ucode->data[inst_size];
3245 len = priv->ucode_data.len;
3246 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3247 memcpy(priv->ucode_data.v_addr, src, len);
3248 memcpy(priv->ucode_data_backup.v_addr, src, len);
3250 /* Initialization instructions (3rd block) */
3252 src = &ucode->data[inst_size + data_size];
3253 len = priv->ucode_init.len;
3254 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3256 memcpy(priv->ucode_init.v_addr, src, len);
3259 /* Initialization data (4th block) */
3260 if (init_data_size) {
3261 src = &ucode->data[inst_size + data_size + init_size];
3262 len = priv->ucode_init_data.len;
3263 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
3265 memcpy(priv->ucode_init_data.v_addr, src, len);
3268 /* Bootstrap instructions (5th block) */
3269 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3270 len = priv->ucode_boot.len;
3271 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
3273 memcpy(priv->ucode_boot.v_addr, src, len);
3275 /* We have our copies now, allow OS release its copies */
3276 release_firmware(ucode_raw);
3280 IWL_ERR(priv, "failed to allocate pci memory\n");
3282 iwl3945_dealloc_ucode_pci(priv);
3285 release_firmware(ucode_raw);
3293 * iwl3945_set_ucode_ptrs - Set uCode address location
3295 * Tell initialization uCode where to find runtime uCode.
3297 * BSM registers initially contain pointers to initialization uCode.
3298 * We need to replace them to load runtime uCode inst and data,
3299 * and to save runtime data when powering down.
3301 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
3306 unsigned long flags;
3308 /* bits 31:0 for 3945 */
3309 pinst = priv->ucode_code.p_addr;
3310 pdata = priv->ucode_data_backup.p_addr;
3312 spin_lock_irqsave(&priv->lock, flags);
3313 rc = iwl_grab_nic_access(priv);
3315 spin_unlock_irqrestore(&priv->lock, flags);
3319 /* Tell bootstrap uCode where to find image to load */
3320 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
3321 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
3322 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
3323 priv->ucode_data.len);
3325 /* Inst byte count must be last to set up, bit 31 signals uCode
3326 * that all new ptr/size info is in place */
3327 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
3328 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
3330 iwl_release_nic_access(priv);
3332 spin_unlock_irqrestore(&priv->lock, flags);
3334 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
3340 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
3342 * Called after REPLY_ALIVE notification received from "initialize" uCode.
3344 * Tell "initialize" uCode to go ahead and load the runtime uCode.
3346 static void iwl3945_init_alive_start(struct iwl_priv *priv)
3348 /* Check alive response for "valid" sign from uCode */
3349 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
3350 /* We had an error bringing up the hardware, so take it
3351 * all the way back down so we can try again */
3352 IWL_DEBUG_INFO("Initialize Alive failed.\n");
3356 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
3357 * This is a paranoid check, because we would not have gotten the
3358 * "initialize" alive if code weren't properly loaded. */
3359 if (iwl3945_verify_ucode(priv)) {
3360 /* Runtime instruction load was bad;
3361 * take it all the way back down so we can try again */
3362 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
3366 /* Send pointers to protocol/runtime uCode image ... init code will
3367 * load and launch runtime uCode, which will send us another "Alive"
3369 IWL_DEBUG_INFO("Initialization Alive received.\n");
3370 if (iwl3945_set_ucode_ptrs(priv)) {
3371 /* Runtime instruction load won't happen;
3372 * take it all the way back down so we can try again */
3373 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
3379 queue_work(priv->workqueue, &priv->restart);
3384 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
3385 struct sk_buff *skb);
3388 * iwl3945_alive_start - called after REPLY_ALIVE notification received
3389 * from protocol/runtime uCode (initialization uCode's
3390 * Alive gets handled by iwl3945_init_alive_start()).
3392 static void iwl3945_alive_start(struct iwl_priv *priv)
3395 int thermal_spin = 0;
3398 IWL_DEBUG_INFO("Runtime Alive received.\n");
3400 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3401 /* We had an error bringing up the hardware, so take it
3402 * all the way back down so we can try again */
3403 IWL_DEBUG_INFO("Alive failed.\n");
3407 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3408 * This is a paranoid check, because we would not have gotten the
3409 * "runtime" alive if code weren't properly loaded. */
3410 if (iwl3945_verify_ucode(priv)) {
3411 /* Runtime instruction load was bad;
3412 * take it all the way back down so we can try again */
3413 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3417 iwl3945_clear_stations_table(priv);
3419 rc = iwl_grab_nic_access(priv);
3421 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
3425 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
3426 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
3427 iwl_release_nic_access(priv);
3430 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3431 /* if RFKILL is not on, then wait for thermal
3432 * sensor in adapter to kick in */
3433 while (iwl3945_hw_get_temperature(priv) == 0) {
3439 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
3442 set_bit(STATUS_RF_KILL_HW, &priv->status);
3444 /* After the ALIVE response, we can send commands to 3945 uCode */
3445 set_bit(STATUS_ALIVE, &priv->status);
3447 /* Clear out the uCode error bit if it is set */
3448 clear_bit(STATUS_FW_ERROR, &priv->status);
3450 if (iwl_is_rfkill(priv))
3453 ieee80211_wake_queues(priv->hw);
3455 priv->active_rate = priv->rates_mask;
3456 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3458 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
3460 if (iwl_is_associated(priv)) {
3461 struct iwl3945_rxon_cmd *active_rxon =
3462 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
3464 memcpy(&priv->staging_rxon, &priv->active_rxon,
3465 sizeof(priv->staging_rxon));
3466 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3468 /* Initialize our rx_config data */
3469 iwl_connection_init_rx_config(priv, priv->iw_mode);
3472 /* Configure Bluetooth device coexistence support */
3473 iwl_send_bt_config(priv);
3475 /* Configure the adapter for unassociated operation */
3476 iwl3945_commit_rxon(priv);
3478 iwl3945_reg_txpower_periodic(priv);
3480 iwl3945_led_register(priv);
3482 IWL_DEBUG_INFO("ALIVE processing complete.\n");
3483 set_bit(STATUS_READY, &priv->status);
3484 wake_up_interruptible(&priv->wait_command_queue);
3486 if (priv->error_recovering)
3487 iwl3945_error_recovery(priv);
3489 /* reassociate for ADHOC mode */
3490 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
3491 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
3494 iwl3945_mac_beacon_update(priv->hw, beacon);
3500 queue_work(priv->workqueue, &priv->restart);
3503 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
3505 static void __iwl3945_down(struct iwl_priv *priv)
3507 unsigned long flags;
3508 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3509 struct ieee80211_conf *conf = NULL;
3511 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3513 conf = ieee80211_get_hw_conf(priv->hw);
3516 set_bit(STATUS_EXIT_PENDING, &priv->status);
3518 iwl3945_led_unregister(priv);
3519 iwl3945_clear_stations_table(priv);
3521 /* Unblock any waiting calls */
3522 wake_up_interruptible_all(&priv->wait_command_queue);
3524 /* Wipe out the EXIT_PENDING status bit if we are not actually
3525 * exiting the module */
3527 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3529 /* stop and reset the on-board processor */
3530 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3532 /* tell the device to stop sending interrupts */
3533 spin_lock_irqsave(&priv->lock, flags);
3534 iwl3945_disable_interrupts(priv);
3535 spin_unlock_irqrestore(&priv->lock, flags);
3536 iwl_synchronize_irq(priv);
3538 if (priv->mac80211_registered)
3539 ieee80211_stop_queues(priv->hw);
3541 /* If we have not previously called iwl3945_init() then
3542 * clear all bits but the RF Kill and SUSPEND bits and return */
3543 if (!iwl_is_init(priv)) {
3544 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3546 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3548 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3549 STATUS_GEO_CONFIGURED |
3550 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3552 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3553 STATUS_EXIT_PENDING;
3557 /* ...otherwise clear out all the status bits but the RF Kill and
3558 * SUSPEND bits and continue taking the NIC down. */
3559 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3561 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3563 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3564 STATUS_GEO_CONFIGURED |
3565 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3567 test_bit(STATUS_FW_ERROR, &priv->status) <<
3569 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3570 STATUS_EXIT_PENDING;
3572 priv->cfg->ops->lib->apm_ops.reset(priv);
3573 spin_lock_irqsave(&priv->lock, flags);
3574 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3575 spin_unlock_irqrestore(&priv->lock, flags);
3577 iwl3945_hw_txq_ctx_stop(priv);
3578 iwl3945_hw_rxq_stop(priv);
3580 spin_lock_irqsave(&priv->lock, flags);
3581 if (!iwl_grab_nic_access(priv)) {
3582 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3583 APMG_CLK_VAL_DMA_CLK_RQT);
3584 iwl_release_nic_access(priv);
3586 spin_unlock_irqrestore(&priv->lock, flags);
3590 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
3591 priv->cfg->ops->lib->apm_ops.stop(priv);
3593 priv->cfg->ops->lib->apm_ops.reset(priv);
3596 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3598 if (priv->ibss_beacon)
3599 dev_kfree_skb(priv->ibss_beacon);
3600 priv->ibss_beacon = NULL;
3602 /* clear out any free frames */
3603 iwl3945_clear_free_frames(priv);
3606 static void iwl3945_down(struct iwl_priv *priv)
3608 mutex_lock(&priv->mutex);
3609 __iwl3945_down(priv);
3610 mutex_unlock(&priv->mutex);
3612 iwl3945_cancel_deferred_work(priv);
3615 #define MAX_HW_RESTARTS 5
3617 static int __iwl3945_up(struct iwl_priv *priv)
3621 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3622 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3626 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3627 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
3632 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3633 IWL_ERR(priv, "ucode not available for device bring up\n");
3637 /* If platform's RF_KILL switch is NOT set to KILL */
3638 if (iwl_read32(priv, CSR_GP_CNTRL) &
3639 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3640 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3642 set_bit(STATUS_RF_KILL_HW, &priv->status);
3643 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3644 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3649 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3651 rc = iwl3945_hw_nic_init(priv);
3653 IWL_ERR(priv, "Unable to int nic\n");
3657 /* make sure rfkill handshake bits are cleared */
3658 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3659 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3660 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3662 /* clear (again), then enable host interrupts */
3663 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3664 iwl3945_enable_interrupts(priv);
3666 /* really make sure rfkill handshake bits are cleared */
3667 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3668 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3670 /* Copy original ucode data image from disk into backup cache.
3671 * This will be used to initialize the on-board processor's
3672 * data SRAM for a clean start when the runtime program first loads. */
3673 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3674 priv->ucode_data.len);
3676 /* We return success when we resume from suspend and rf_kill is on. */
3677 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3680 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3682 iwl3945_clear_stations_table(priv);
3684 /* load bootstrap state machine,
3685 * load bootstrap program into processor's memory,
3686 * prepare to load the "initialize" uCode */
3687 priv->cfg->ops->lib->load_ucode(priv);
3691 "Unable to set up bootstrap uCode: %d\n", rc);
3695 /* start card; "initialize" will load runtime ucode */
3696 iwl3945_nic_start(priv);
3698 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3703 set_bit(STATUS_EXIT_PENDING, &priv->status);
3704 __iwl3945_down(priv);
3705 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3707 /* tried to restart and config the device for as long as our
3708 * patience could withstand */
3709 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3714 /*****************************************************************************
3716 * Workqueue callbacks
3718 *****************************************************************************/
3720 static void iwl3945_bg_init_alive_start(struct work_struct *data)
3722 struct iwl_priv *priv =
3723 container_of(data, struct iwl_priv, init_alive_start.work);
3725 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3728 mutex_lock(&priv->mutex);
3729 iwl3945_init_alive_start(priv);
3730 mutex_unlock(&priv->mutex);
3733 static void iwl3945_bg_alive_start(struct work_struct *data)
3735 struct iwl_priv *priv =
3736 container_of(data, struct iwl_priv, alive_start.work);
3738 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3741 mutex_lock(&priv->mutex);
3742 iwl3945_alive_start(priv);
3743 mutex_unlock(&priv->mutex);
3746 static void iwl3945_rfkill_poll(struct work_struct *data)
3748 struct iwl_priv *priv =
3749 container_of(data, struct iwl_priv, rfkill_poll.work);
3750 unsigned long status = priv->status;
3752 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3753 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3755 set_bit(STATUS_RF_KILL_HW, &priv->status);
3757 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
3758 queue_work(priv->workqueue, &priv->rf_kill);
3760 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3761 round_jiffies_relative(2 * HZ));
3765 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3766 static void iwl3945_bg_request_scan(struct work_struct *data)
3768 struct iwl_priv *priv =
3769 container_of(data, struct iwl_priv, request_scan);
3770 struct iwl_host_cmd cmd = {
3771 .id = REPLY_SCAN_CMD,
3772 .len = sizeof(struct iwl3945_scan_cmd),
3773 .meta.flags = CMD_SIZE_HUGE,
3776 struct iwl3945_scan_cmd *scan;
3777 struct ieee80211_conf *conf = NULL;
3779 enum ieee80211_band band;
3780 DECLARE_SSID_BUF(ssid);
3782 conf = ieee80211_get_hw_conf(priv->hw);
3784 mutex_lock(&priv->mutex);
3786 if (!iwl_is_ready(priv)) {
3787 IWL_WARN(priv, "request scan called when driver not ready.\n");
3791 /* Make sure the scan wasn't canceled before this queued work
3792 * was given the chance to run... */
3793 if (!test_bit(STATUS_SCANNING, &priv->status))
3796 /* This should never be called or scheduled if there is currently
3797 * a scan active in the hardware. */
3798 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3799 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3800 "Ignoring second request.\n");
3805 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3806 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3810 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3811 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3815 if (iwl_is_rfkill(priv)) {
3816 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3820 if (!test_bit(STATUS_READY, &priv->status)) {
3821 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3825 if (!priv->scan_bands) {
3826 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3831 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3832 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3839 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3841 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3842 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3844 if (iwl_is_associated(priv)) {
3847 u32 suspend_time = 100;
3848 u32 scan_suspend_time = 100;
3849 unsigned long flags;
3851 IWL_DEBUG_INFO("Scanning while associated...\n");
3853 spin_lock_irqsave(&priv->lock, flags);
3854 interval = priv->beacon_int;
3855 spin_unlock_irqrestore(&priv->lock, flags);
3857 scan->suspend_time = 0;
3858 scan->max_out_time = cpu_to_le32(200 * 1024);
3860 interval = suspend_time;
3862 * suspend time format:
3863 * 0-19: beacon interval in usec (time before exec.)
3865 * 24-31: number of beacons (suspend between channels)
3868 extra = (suspend_time / interval) << 24;
3869 scan_suspend_time = 0xFF0FFFFF &
3870 (extra | ((suspend_time % interval) * 1024));
3872 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3873 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3874 scan_suspend_time, interval);
3877 /* We should add the ability for user to lock to PASSIVE ONLY */
3878 if (priv->one_direct_scan) {
3880 ("Kicking off one direct scan for '%s'\n",
3881 print_ssid(ssid, priv->direct_ssid,
3882 priv->direct_ssid_len));
3883 scan->direct_scan[0].id = WLAN_EID_SSID;
3884 scan->direct_scan[0].len = priv->direct_ssid_len;
3885 memcpy(scan->direct_scan[0].ssid,
3886 priv->direct_ssid, priv->direct_ssid_len);
3889 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3891 /* We don't build a direct scan probe request; the uCode will do
3892 * that based on the direct_mask added to each channel entry */
3893 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3894 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3895 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3897 /* flags + rate selection */
3899 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3900 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3901 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3902 scan->good_CRC_th = 0;
3903 band = IEEE80211_BAND_2GHZ;
3904 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3905 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3906 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3907 band = IEEE80211_BAND_5GHZ;
3909 IWL_WARN(priv, "Invalid scan band count\n");
3913 scan->tx_cmd.len = cpu_to_le16(
3914 iwl_fill_probe_req(priv, band,
3915 (struct ieee80211_mgmt *)scan->data,
3916 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3918 /* select Rx antennas */
3919 scan->flags |= iwl3945_get_antenna_flags(priv);
3921 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3922 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3924 scan->channel_count =
3925 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3927 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3929 if (scan->channel_count == 0) {
3930 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
3934 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3935 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3937 scan->len = cpu_to_le16(cmd.len);
3939 set_bit(STATUS_SCAN_HW, &priv->status);
3940 rc = iwl_send_cmd_sync(priv, &cmd);
3944 queue_delayed_work(priv->workqueue, &priv->scan_check,
3945 IWL_SCAN_CHECK_WATCHDOG);
3947 mutex_unlock(&priv->mutex);
3951 /* can not perform scan make sure we clear scanning
3952 * bits from status so next scan request can be performed.
3953 * if we dont clear scanning status bit here all next scan
3956 clear_bit(STATUS_SCAN_HW, &priv->status);
3957 clear_bit(STATUS_SCANNING, &priv->status);
3959 /* inform mac80211 scan aborted */
3960 queue_work(priv->workqueue, &priv->scan_completed);
3961 mutex_unlock(&priv->mutex);
3964 static void iwl3945_bg_up(struct work_struct *data)
3966 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3968 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3971 mutex_lock(&priv->mutex);
3973 mutex_unlock(&priv->mutex);
3974 iwl_rfkill_set_hw_state(priv);
3977 static void iwl3945_bg_restart(struct work_struct *data)
3979 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3981 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3985 queue_work(priv->workqueue, &priv->up);
3988 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3990 struct iwl_priv *priv =
3991 container_of(data, struct iwl_priv, rx_replenish);
3993 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3996 mutex_lock(&priv->mutex);
3997 iwl3945_rx_replenish(priv);
3998 mutex_unlock(&priv->mutex);
4001 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4003 static void iwl3945_post_associate(struct iwl_priv *priv)
4006 struct ieee80211_conf *conf = NULL;
4008 if (priv->iw_mode == NL80211_IFTYPE_AP) {
4009 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
4014 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
4015 priv->assoc_id, priv->active_rxon.bssid_addr);
4017 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4020 if (!priv->vif || !priv->is_open)
4023 iwl_scan_cancel_timeout(priv, 200);
4025 conf = ieee80211_get_hw_conf(priv->hw);
4027 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4028 iwl3945_commit_rxon(priv);
4030 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4031 iwl3945_setup_rxon_timing(priv);
4032 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4033 sizeof(priv->rxon_timing), &priv->rxon_timing);
4035 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4036 "Attempting to continue.\n");
4038 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4040 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4042 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4043 priv->assoc_id, priv->beacon_int);
4045 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4046 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4048 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4050 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4051 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4052 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4054 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4056 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
4057 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4061 iwl3945_commit_rxon(priv);
4063 switch (priv->iw_mode) {
4064 case NL80211_IFTYPE_STATION:
4065 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
4068 case NL80211_IFTYPE_ADHOC:
4071 iwl3945_add_station(priv, priv->bssid, 0, 0);
4072 iwl3945_sync_sta(priv, IWL_STA_ID,
4073 (priv->band == IEEE80211_BAND_5GHZ) ?
4074 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
4076 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
4077 iwl3945_send_beacon_cmd(priv);
4082 IWL_ERR(priv, "%s Should not be called in %d mode\n",
4083 __func__, priv->iw_mode);
4087 iwl3945_activate_qos(priv, 0);
4089 /* we have just associated, don't start scan too early */
4090 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4093 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
4095 /*****************************************************************************
4097 * mac80211 entry point functions
4099 *****************************************************************************/
4101 #define UCODE_READY_TIMEOUT (2 * HZ)
4103 static int iwl3945_mac_start(struct ieee80211_hw *hw)
4105 struct iwl_priv *priv = hw->priv;
4108 IWL_DEBUG_MAC80211("enter\n");
4110 /* we should be verifying the device is ready to be opened */
4111 mutex_lock(&priv->mutex);
4113 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
4114 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4115 * ucode filename and max sizes are card-specific. */
4117 if (!priv->ucode_code.len) {
4118 ret = iwl3945_read_ucode(priv);
4120 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
4121 mutex_unlock(&priv->mutex);
4122 goto out_release_irq;
4126 ret = __iwl3945_up(priv);
4128 mutex_unlock(&priv->mutex);
4130 iwl_rfkill_set_hw_state(priv);
4133 goto out_release_irq;
4135 IWL_DEBUG_INFO("Start UP work.\n");
4137 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4140 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4141 * mac80211 will not be run successfully. */
4142 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4143 test_bit(STATUS_READY, &priv->status),
4144 UCODE_READY_TIMEOUT);
4146 if (!test_bit(STATUS_READY, &priv->status)) {
4148 "Wait for START_ALIVE timeout after %dms.\n",
4149 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4151 goto out_release_irq;
4155 /* ucode is running and will send rfkill notifications,
4156 * no need to poll the killswitch state anymore */
4157 cancel_delayed_work(&priv->rfkill_poll);
4160 IWL_DEBUG_MAC80211("leave\n");
4165 IWL_DEBUG_MAC80211("leave - failed\n");
4169 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
4171 struct iwl_priv *priv = hw->priv;
4173 IWL_DEBUG_MAC80211("enter\n");
4175 if (!priv->is_open) {
4176 IWL_DEBUG_MAC80211("leave - skip\n");
4182 if (iwl_is_ready_rf(priv)) {
4183 /* stop mac, cancel any scan request and clear
4184 * RXON_FILTER_ASSOC_MSK BIT
4186 mutex_lock(&priv->mutex);
4187 iwl_scan_cancel_timeout(priv, 100);
4188 mutex_unlock(&priv->mutex);
4193 flush_workqueue(priv->workqueue);
4195 /* start polling the killswitch state again */
4196 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4197 round_jiffies_relative(2 * HZ));
4199 IWL_DEBUG_MAC80211("leave\n");
4202 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4204 struct iwl_priv *priv = hw->priv;
4206 IWL_DEBUG_MAC80211("enter\n");
4208 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4209 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4211 if (iwl3945_tx_skb(priv, skb))
4212 dev_kfree_skb_any(skb);
4214 IWL_DEBUG_MAC80211("leave\n");
4215 return NETDEV_TX_OK;
4218 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
4219 struct ieee80211_if_init_conf *conf)
4221 struct iwl_priv *priv = hw->priv;
4222 unsigned long flags;
4224 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4227 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4231 spin_lock_irqsave(&priv->lock, flags);
4232 priv->vif = conf->vif;
4233 priv->iw_mode = conf->type;
4235 spin_unlock_irqrestore(&priv->lock, flags);
4237 mutex_lock(&priv->mutex);
4239 if (conf->mac_addr) {
4240 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
4241 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4244 if (iwl_is_ready(priv))
4245 iwl3945_set_mode(priv, conf->type);
4247 mutex_unlock(&priv->mutex);
4249 IWL_DEBUG_MAC80211("leave\n");
4254 * iwl3945_mac_config - mac80211 config callback
4256 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4257 * be set inappropriately and the driver currently sets the hardware up to
4258 * use it whenever needed.
4260 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
4262 struct iwl_priv *priv = hw->priv;
4263 const struct iwl_channel_info *ch_info;
4264 struct ieee80211_conf *conf = &hw->conf;
4265 unsigned long flags;
4268 mutex_lock(&priv->mutex);
4269 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4271 if (!iwl_is_ready(priv)) {
4272 IWL_DEBUG_MAC80211("leave - not ready\n");
4277 if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
4278 test_bit(STATUS_SCANNING, &priv->status))) {
4279 IWL_DEBUG_MAC80211("leave - scanning\n");
4280 set_bit(STATUS_CONF_PENDING, &priv->status);
4281 mutex_unlock(&priv->mutex);
4285 spin_lock_irqsave(&priv->lock, flags);
4287 ch_info = iwl_get_channel_info(priv, conf->channel->band,
4288 conf->channel->hw_value);
4289 if (!is_channel_valid(ch_info)) {
4290 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
4291 conf->channel->hw_value, conf->channel->band);
4292 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4293 spin_unlock_irqrestore(&priv->lock, flags);
4298 iwl_set_rxon_channel(priv, conf->channel);
4300 iwl_set_flags_for_band(priv, conf->channel->band);
4302 /* The list of supported rates and rate mask can be different
4303 * for each phymode; since the phymode may have changed, reset
4304 * the rate mask to what mac80211 lists */
4307 spin_unlock_irqrestore(&priv->lock, flags);
4309 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4310 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4311 iwl3945_hw_channel_switch(priv, conf->channel);
4316 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
4318 if (!conf->radio_enabled) {
4319 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4323 if (iwl_is_rfkill(priv)) {
4324 IWL_DEBUG_MAC80211("leave - RF kill\n");
4331 if (memcmp(&priv->active_rxon,
4332 &priv->staging_rxon, sizeof(priv->staging_rxon)))
4333 iwl3945_commit_rxon(priv);
4335 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4337 IWL_DEBUG_MAC80211("leave\n");
4340 clear_bit(STATUS_CONF_PENDING, &priv->status);
4341 mutex_unlock(&priv->mutex);
4345 static void iwl3945_config_ap(struct iwl_priv *priv)
4349 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4352 /* The following should be done only at AP bring up */
4353 if (!(iwl_is_associated(priv))) {
4355 /* RXON - unassoc (to set timing command) */
4356 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4357 iwl3945_commit_rxon(priv);
4360 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4361 iwl3945_setup_rxon_timing(priv);
4362 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4363 sizeof(priv->rxon_timing),
4364 &priv->rxon_timing);
4366 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4367 "Attempting to continue.\n");
4369 /* FIXME: what should be the assoc_id for AP? */
4370 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4371 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4372 priv->staging_rxon.flags |=
4373 RXON_FLG_SHORT_PREAMBLE_MSK;
4375 priv->staging_rxon.flags &=
4376 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4378 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4379 if (priv->assoc_capability &
4380 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4381 priv->staging_rxon.flags |=
4382 RXON_FLG_SHORT_SLOT_MSK;
4384 priv->staging_rxon.flags &=
4385 ~RXON_FLG_SHORT_SLOT_MSK;
4387 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
4388 priv->staging_rxon.flags &=
4389 ~RXON_FLG_SHORT_SLOT_MSK;
4391 /* restore RXON assoc */
4392 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4393 iwl3945_commit_rxon(priv);
4394 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
4396 iwl3945_send_beacon_cmd(priv);
4398 /* FIXME - we need to add code here to detect a totally new
4399 * configuration, reset the AP, unassoc, rxon timing, assoc,
4400 * clear sta table, add BCAST sta... */
4403 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
4404 struct ieee80211_vif *vif,
4405 struct ieee80211_if_conf *conf)
4407 struct iwl_priv *priv = hw->priv;
4413 if (priv->vif != vif) {
4414 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4418 /* handle this temporarily here */
4419 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
4420 conf->changed & IEEE80211_IFCC_BEACON) {
4421 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
4424 mutex_lock(&priv->mutex);
4425 rc = iwl3945_mac_beacon_update(hw, beacon);
4426 mutex_unlock(&priv->mutex);
4431 if (!iwl_is_alive(priv))
4434 mutex_lock(&priv->mutex);
4437 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
4440 * very dubious code was here; the probe filtering flag is never set:
4442 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4443 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4446 if (priv->iw_mode == NL80211_IFTYPE_AP) {
4448 conf->bssid = priv->mac_addr;
4449 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4450 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
4453 if (priv->ibss_beacon)
4454 dev_kfree_skb(priv->ibss_beacon);
4456 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
4459 if (iwl_is_rfkill(priv))
4462 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4463 !is_multicast_ether_addr(conf->bssid)) {
4464 /* If there is currently a HW scan going on in the background
4465 * then we need to cancel it else the RXON below will fail. */
4466 if (iwl_scan_cancel_timeout(priv, 100)) {
4467 IWL_WARN(priv, "Aborted scan still in progress "
4469 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4470 mutex_unlock(&priv->mutex);
4473 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4475 /* TODO: Audit driver for usage of these members and see
4476 * if mac80211 deprecates them (priv->bssid looks like it
4477 * shouldn't be there, but I haven't scanned the IBSS code
4478 * to verify) - jpk */
4479 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4481 if (priv->iw_mode == NL80211_IFTYPE_AP)
4482 iwl3945_config_ap(priv);
4484 rc = iwl3945_commit_rxon(priv);
4485 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
4486 iwl3945_add_station(priv,
4487 priv->active_rxon.bssid_addr, 1, 0);
4491 iwl_scan_cancel_timeout(priv, 100);
4492 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4493 iwl3945_commit_rxon(priv);
4497 IWL_DEBUG_MAC80211("leave\n");
4498 mutex_unlock(&priv->mutex);
4503 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
4504 struct ieee80211_if_init_conf *conf)
4506 struct iwl_priv *priv = hw->priv;
4508 IWL_DEBUG_MAC80211("enter\n");
4510 mutex_lock(&priv->mutex);
4512 if (iwl_is_ready_rf(priv)) {
4513 iwl_scan_cancel_timeout(priv, 100);
4514 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4515 iwl3945_commit_rxon(priv);
4517 if (priv->vif == conf->vif) {
4519 memset(priv->bssid, 0, ETH_ALEN);
4521 mutex_unlock(&priv->mutex);
4523 IWL_DEBUG_MAC80211("leave\n");
4526 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4528 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
4529 struct ieee80211_vif *vif,
4530 struct ieee80211_bss_conf *bss_conf,
4533 struct iwl_priv *priv = hw->priv;
4535 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4537 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4538 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4539 bss_conf->use_short_preamble);
4540 if (bss_conf->use_short_preamble)
4541 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4543 priv->staging_rxon.flags &=
4544 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4547 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4548 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4549 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4550 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4552 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4555 if (changes & BSS_CHANGED_ASSOC) {
4556 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4557 /* This should never happen as this function should
4558 * never be called from interrupt context. */
4559 if (WARN_ON_ONCE(in_interrupt()))
4561 if (bss_conf->assoc) {
4562 priv->assoc_id = bss_conf->aid;
4563 priv->beacon_int = bss_conf->beacon_int;
4564 priv->timestamp = bss_conf->timestamp;
4565 priv->assoc_capability = bss_conf->assoc_capability;
4566 priv->power_data.dtim_period = bss_conf->dtim_period;
4567 priv->next_scan_jiffies = jiffies +
4568 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4569 mutex_lock(&priv->mutex);
4570 iwl3945_post_associate(priv);
4571 mutex_unlock(&priv->mutex);
4574 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4576 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4577 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4578 iwl3945_send_rxon_assoc(priv);
4583 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4586 unsigned long flags;
4587 struct iwl_priv *priv = hw->priv;
4588 DECLARE_SSID_BUF(ssid_buf);
4590 IWL_DEBUG_MAC80211("enter\n");
4592 mutex_lock(&priv->mutex);
4593 spin_lock_irqsave(&priv->lock, flags);
4595 if (!iwl_is_ready_rf(priv)) {
4597 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4601 /* we don't schedule scan within next_scan_jiffies period */
4602 if (priv->next_scan_jiffies &&
4603 time_after(priv->next_scan_jiffies, jiffies)) {
4607 /* if we just finished scan ask for delay for a broadcast scan */
4608 if ((len == 0) && priv->last_scan_jiffies &&
4609 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
4615 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4616 print_ssid(ssid_buf, ssid, len), (int)len);
4618 priv->one_direct_scan = 1;
4619 priv->direct_ssid_len = (u8)
4620 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4621 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4623 priv->one_direct_scan = 0;
4625 rc = iwl3945_scan_initiate(priv);
4627 IWL_DEBUG_MAC80211("leave\n");
4630 spin_unlock_irqrestore(&priv->lock, flags);
4631 mutex_unlock(&priv->mutex);
4636 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4637 struct ieee80211_vif *vif,
4638 struct ieee80211_sta *sta,
4639 struct ieee80211_key_conf *key)
4641 struct iwl_priv *priv = hw->priv;
4646 IWL_DEBUG_MAC80211("enter\n");
4648 if (iwl3945_mod_params.sw_crypto) {
4649 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4653 addr = sta ? sta->addr : iwl_bcast_addr;
4654 sta_id = iwl3945_hw_find_station(priv, addr);
4655 if (sta_id == IWL_INVALID_STATION) {
4656 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
4661 mutex_lock(&priv->mutex);
4663 iwl_scan_cancel_timeout(priv, 100);
4667 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
4669 iwl_set_rxon_hwcrypto(priv, 1);
4670 iwl3945_commit_rxon(priv);
4671 key->hw_key_idx = sta_id;
4672 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
4673 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4677 ret = iwl3945_clear_sta_key_info(priv, sta_id);
4679 iwl_set_rxon_hwcrypto(priv, 0);
4680 iwl3945_commit_rxon(priv);
4681 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4688 IWL_DEBUG_MAC80211("leave\n");
4689 mutex_unlock(&priv->mutex);
4694 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4695 const struct ieee80211_tx_queue_params *params)
4697 struct iwl_priv *priv = hw->priv;
4698 unsigned long flags;
4701 IWL_DEBUG_MAC80211("enter\n");
4703 if (!iwl_is_ready_rf(priv)) {
4704 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4708 if (queue >= AC_NUM) {
4709 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4713 q = AC_NUM - 1 - queue;
4715 spin_lock_irqsave(&priv->lock, flags);
4717 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4718 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4719 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4720 priv->qos_data.def_qos_parm.ac[q].edca_txop =
4721 cpu_to_le16((params->txop * 32));
4723 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4724 priv->qos_data.qos_active = 1;
4726 spin_unlock_irqrestore(&priv->lock, flags);
4728 mutex_lock(&priv->mutex);
4729 if (priv->iw_mode == NL80211_IFTYPE_AP)
4730 iwl3945_activate_qos(priv, 1);
4731 else if (priv->assoc_id && iwl_is_associated(priv))
4732 iwl3945_activate_qos(priv, 0);
4734 mutex_unlock(&priv->mutex);
4736 IWL_DEBUG_MAC80211("leave\n");
4740 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
4741 struct ieee80211_tx_queue_stats *stats)
4743 struct iwl_priv *priv = hw->priv;
4745 struct iwl_tx_queue *txq;
4746 struct iwl_queue *q;
4747 unsigned long flags;
4749 IWL_DEBUG_MAC80211("enter\n");
4751 if (!iwl_is_ready_rf(priv)) {
4752 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4756 spin_lock_irqsave(&priv->lock, flags);
4758 for (i = 0; i < AC_NUM; i++) {
4759 txq = &priv->txq[i];
4761 avail = iwl_queue_space(q);
4763 stats[i].len = q->n_window - avail;
4764 stats[i].limit = q->n_window - q->high_mark;
4765 stats[i].count = q->n_window;
4768 spin_unlock_irqrestore(&priv->lock, flags);
4770 IWL_DEBUG_MAC80211("leave\n");
4775 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
4777 struct iwl_priv *priv = hw->priv;
4778 unsigned long flags;
4780 mutex_lock(&priv->mutex);
4781 IWL_DEBUG_MAC80211("enter\n");
4783 iwl_reset_qos(priv);
4785 spin_lock_irqsave(&priv->lock, flags);
4787 priv->assoc_capability = 0;
4789 /* new association get rid of ibss beacon skb */
4790 if (priv->ibss_beacon)
4791 dev_kfree_skb(priv->ibss_beacon);
4793 priv->ibss_beacon = NULL;
4795 priv->beacon_int = priv->hw->conf.beacon_int;
4796 priv->timestamp = 0;
4797 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
4798 priv->beacon_int = 0;
4800 spin_unlock_irqrestore(&priv->lock, flags);
4802 if (!iwl_is_ready_rf(priv)) {
4803 IWL_DEBUG_MAC80211("leave - not ready\n");
4804 mutex_unlock(&priv->mutex);
4808 /* we are restarting association process
4809 * clear RXON_FILTER_ASSOC_MSK bit
4811 if (priv->iw_mode != NL80211_IFTYPE_AP) {
4812 iwl_scan_cancel_timeout(priv, 100);
4813 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4814 iwl3945_commit_rxon(priv);
4817 /* Per mac80211.h: This is only used in IBSS mode... */
4818 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4820 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4821 mutex_unlock(&priv->mutex);
4827 mutex_unlock(&priv->mutex);
4829 IWL_DEBUG_MAC80211("leave\n");
4833 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4835 struct iwl_priv *priv = hw->priv;
4836 unsigned long flags;
4838 IWL_DEBUG_MAC80211("enter\n");
4840 if (!iwl_is_ready_rf(priv)) {
4841 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4845 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4846 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4850 spin_lock_irqsave(&priv->lock, flags);
4852 if (priv->ibss_beacon)
4853 dev_kfree_skb(priv->ibss_beacon);
4855 priv->ibss_beacon = skb;
4859 IWL_DEBUG_MAC80211("leave\n");
4860 spin_unlock_irqrestore(&priv->lock, flags);
4862 iwl_reset_qos(priv);
4864 iwl3945_post_associate(priv);
4870 /*****************************************************************************
4874 *****************************************************************************/
4876 #ifdef CONFIG_IWLWIFI_DEBUG
4879 * The following adds a new attribute to the sysfs representation
4880 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4881 * used for controlling the debug level.
4883 * See the level definitions in iwl for details.
4885 static ssize_t show_debug_level(struct device *d,
4886 struct device_attribute *attr, char *buf)
4888 struct iwl_priv *priv = d->driver_data;
4890 return sprintf(buf, "0x%08X\n", priv->debug_level);
4892 static ssize_t store_debug_level(struct device *d,
4893 struct device_attribute *attr,
4894 const char *buf, size_t count)
4896 struct iwl_priv *priv = d->driver_data;
4900 ret = strict_strtoul(buf, 0, &val);
4902 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
4904 priv->debug_level = val;
4906 return strnlen(buf, count);
4909 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4910 show_debug_level, store_debug_level);
4912 #endif /* CONFIG_IWLWIFI_DEBUG */
4914 static ssize_t show_temperature(struct device *d,
4915 struct device_attribute *attr, char *buf)
4917 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4919 if (!iwl_is_alive(priv))
4922 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
4925 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4927 static ssize_t show_tx_power(struct device *d,
4928 struct device_attribute *attr, char *buf)
4930 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4931 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
4934 static ssize_t store_tx_power(struct device *d,
4935 struct device_attribute *attr,
4936 const char *buf, size_t count)
4938 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4939 char *p = (char *)buf;
4942 val = simple_strtoul(p, &p, 10);
4944 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
4946 iwl3945_hw_reg_set_txpower(priv, val);
4951 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4953 static ssize_t show_flags(struct device *d,
4954 struct device_attribute *attr, char *buf)
4956 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4958 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4961 static ssize_t store_flags(struct device *d,
4962 struct device_attribute *attr,
4963 const char *buf, size_t count)
4965 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4966 u32 flags = simple_strtoul(buf, NULL, 0);
4968 mutex_lock(&priv->mutex);
4969 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4970 /* Cancel any currently running scans... */
4971 if (iwl_scan_cancel_timeout(priv, 100))
4972 IWL_WARN(priv, "Could not cancel scan.\n");
4974 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4976 priv->staging_rxon.flags = cpu_to_le32(flags);
4977 iwl3945_commit_rxon(priv);
4980 mutex_unlock(&priv->mutex);
4985 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4987 static ssize_t show_filter_flags(struct device *d,
4988 struct device_attribute *attr, char *buf)
4990 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4992 return sprintf(buf, "0x%04X\n",
4993 le32_to_cpu(priv->active_rxon.filter_flags));
4996 static ssize_t store_filter_flags(struct device *d,
4997 struct device_attribute *attr,
4998 const char *buf, size_t count)
5000 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5001 u32 filter_flags = simple_strtoul(buf, NULL, 0);
5003 mutex_lock(&priv->mutex);
5004 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5005 /* Cancel any currently running scans... */
5006 if (iwl_scan_cancel_timeout(priv, 100))
5007 IWL_WARN(priv, "Could not cancel scan.\n");
5009 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5010 "0x%04X\n", filter_flags);
5011 priv->staging_rxon.filter_flags =
5012 cpu_to_le32(filter_flags);
5013 iwl3945_commit_rxon(priv);
5016 mutex_unlock(&priv->mutex);
5021 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5022 store_filter_flags);
5024 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
5026 static ssize_t show_measurement(struct device *d,
5027 struct device_attribute *attr, char *buf)
5029 struct iwl_priv *priv = dev_get_drvdata(d);
5030 struct iwl_spectrum_notification measure_report;
5031 u32 size = sizeof(measure_report), len = 0, ofs = 0;
5032 u8 *data = (u8 *)&measure_report;
5033 unsigned long flags;
5035 spin_lock_irqsave(&priv->lock, flags);
5036 if (!(priv->measurement_status & MEASUREMENT_READY)) {
5037 spin_unlock_irqrestore(&priv->lock, flags);
5040 memcpy(&measure_report, &priv->measure_report, size);
5041 priv->measurement_status = 0;
5042 spin_unlock_irqrestore(&priv->lock, flags);
5044 while (size && (PAGE_SIZE - len)) {
5045 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5046 PAGE_SIZE - len, 1);
5048 if (PAGE_SIZE - len)
5052 size -= min(size, 16U);
5058 static ssize_t store_measurement(struct device *d,
5059 struct device_attribute *attr,
5060 const char *buf, size_t count)
5062 struct iwl_priv *priv = dev_get_drvdata(d);
5063 struct ieee80211_measurement_params params = {
5064 .channel = le16_to_cpu(priv->active_rxon.channel),
5065 .start_time = cpu_to_le64(priv->last_tsf),
5066 .duration = cpu_to_le16(1),
5068 u8 type = IWL_MEASURE_BASIC;
5074 strncpy(buffer, buf, min(sizeof(buffer), count));
5075 channel = simple_strtoul(p, NULL, 0);
5077 params.channel = channel;
5080 while (*p && *p != ' ')
5083 type = simple_strtoul(p + 1, NULL, 0);
5086 IWL_DEBUG_INFO("Invoking measurement of type %d on "
5087 "channel %d (for '%s')\n", type, params.channel, buf);
5088 iwl3945_get_measurement(priv, ¶ms, type);
5093 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5094 show_measurement, store_measurement);
5095 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
5097 static ssize_t store_retry_rate(struct device *d,
5098 struct device_attribute *attr,
5099 const char *buf, size_t count)
5101 struct iwl_priv *priv = dev_get_drvdata(d);
5103 priv->retry_rate = simple_strtoul(buf, NULL, 0);
5104 if (priv->retry_rate <= 0)
5105 priv->retry_rate = 1;
5110 static ssize_t show_retry_rate(struct device *d,
5111 struct device_attribute *attr, char *buf)
5113 struct iwl_priv *priv = dev_get_drvdata(d);
5114 return sprintf(buf, "%d", priv->retry_rate);
5117 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5120 static ssize_t store_power_level(struct device *d,
5121 struct device_attribute *attr,
5122 const char *buf, size_t count)
5124 struct iwl_priv *priv = dev_get_drvdata(d);
5128 mode = simple_strtoul(buf, NULL, 0);
5129 mutex_lock(&priv->mutex);
5131 if (!iwl_is_ready(priv)) {
5136 if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
5137 (mode == IWL39_POWER_AC))
5138 mode = IWL39_POWER_AC;
5140 mode |= IWL_POWER_ENABLED;
5142 if (mode != priv->power_mode) {
5143 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
5145 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5148 priv->power_mode = mode;
5154 mutex_unlock(&priv->mutex);
5158 #define MAX_WX_STRING 80
5160 /* Values are in microsecond */
5161 static const s32 timeout_duration[] = {
5168 static const s32 period_duration[] = {
5176 static ssize_t show_power_level(struct device *d,
5177 struct device_attribute *attr, char *buf)
5179 struct iwl_priv *priv = dev_get_drvdata(d);
5180 int level = IWL_POWER_LEVEL(priv->power_mode);
5183 p += sprintf(p, "%d ", level);
5185 case IWL_POWER_MODE_CAM:
5186 case IWL39_POWER_AC:
5187 p += sprintf(p, "(AC)");
5189 case IWL39_POWER_BATTERY:
5190 p += sprintf(p, "(BATTERY)");
5194 "(Timeout %dms, Period %dms)",
5195 timeout_duration[level - 1] / 1000,
5196 period_duration[level - 1] / 1000);
5199 if (!(priv->power_mode & IWL_POWER_ENABLED))
5200 p += sprintf(p, " OFF\n");
5202 p += sprintf(p, " \n");
5208 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5211 static ssize_t show_channels(struct device *d,
5212 struct device_attribute *attr, char *buf)
5214 /* all this shit doesn't belong into sysfs anyway */
5218 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5220 static ssize_t show_statistics(struct device *d,
5221 struct device_attribute *attr, char *buf)
5223 struct iwl_priv *priv = dev_get_drvdata(d);
5224 u32 size = sizeof(struct iwl3945_notif_statistics);
5225 u32 len = 0, ofs = 0;
5226 u8 *data = (u8 *)&priv->statistics_39;
5229 if (!iwl_is_alive(priv))
5232 mutex_lock(&priv->mutex);
5233 rc = iwl_send_statistics_request(priv, 0);
5234 mutex_unlock(&priv->mutex);
5238 "Error sending statistics request: 0x%08X\n", rc);
5242 while (size && (PAGE_SIZE - len)) {
5243 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5244 PAGE_SIZE - len, 1);
5246 if (PAGE_SIZE - len)
5250 size -= min(size, 16U);
5256 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5258 static ssize_t show_antenna(struct device *d,
5259 struct device_attribute *attr, char *buf)
5261 struct iwl_priv *priv = dev_get_drvdata(d);
5263 if (!iwl_is_alive(priv))
5266 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
5269 static ssize_t store_antenna(struct device *d,
5270 struct device_attribute *attr,
5271 const char *buf, size_t count)
5273 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
5279 if (sscanf(buf, "%1i", &ant) != 1) {
5280 IWL_DEBUG_INFO("not in hex or decimal form.\n");
5284 if ((ant >= 0) && (ant <= 2)) {
5285 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
5286 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
5288 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
5294 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
5296 static ssize_t show_status(struct device *d,
5297 struct device_attribute *attr, char *buf)
5299 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5300 if (!iwl_is_alive(priv))
5302 return sprintf(buf, "0x%08x\n", (int)priv->status);
5305 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5307 static ssize_t dump_error_log(struct device *d,
5308 struct device_attribute *attr,
5309 const char *buf, size_t count)
5311 char *p = (char *)buf;
5314 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5316 return strnlen(buf, count);
5319 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5321 static ssize_t dump_event_log(struct device *d,
5322 struct device_attribute *attr,
5323 const char *buf, size_t count)
5325 char *p = (char *)buf;
5328 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
5330 return strnlen(buf, count);
5333 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
5335 /*****************************************************************************
5337 * driver setup and tear down
5339 *****************************************************************************/
5341 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
5343 priv->workqueue = create_workqueue(DRV_NAME);
5345 init_waitqueue_head(&priv->wait_command_queue);
5347 INIT_WORK(&priv->up, iwl3945_bg_up);
5348 INIT_WORK(&priv->restart, iwl3945_bg_restart);
5349 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
5350 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
5351 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
5352 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
5353 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
5354 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
5355 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
5356 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
5357 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
5358 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
5360 iwl3945_hw_setup_deferred_work(priv);
5362 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5363 iwl3945_irq_tasklet, (unsigned long)priv);
5366 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
5368 iwl3945_hw_cancel_deferred_work(priv);
5370 cancel_delayed_work_sync(&priv->init_alive_start);
5371 cancel_delayed_work(&priv->scan_check);
5372 cancel_delayed_work(&priv->alive_start);
5373 cancel_work_sync(&priv->beacon_update);
5376 static struct attribute *iwl3945_sysfs_entries[] = {
5377 &dev_attr_antenna.attr,
5378 &dev_attr_channels.attr,
5379 &dev_attr_dump_errors.attr,
5380 &dev_attr_dump_events.attr,
5381 &dev_attr_flags.attr,
5382 &dev_attr_filter_flags.attr,
5383 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
5384 &dev_attr_measurement.attr,
5386 &dev_attr_power_level.attr,
5387 &dev_attr_retry_rate.attr,
5388 &dev_attr_statistics.attr,
5389 &dev_attr_status.attr,
5390 &dev_attr_temperature.attr,
5391 &dev_attr_tx_power.attr,
5392 #ifdef CONFIG_IWLWIFI_DEBUG
5393 &dev_attr_debug_level.attr,
5398 static struct attribute_group iwl3945_attribute_group = {
5399 .name = NULL, /* put in device directory */
5400 .attrs = iwl3945_sysfs_entries,
5403 static struct ieee80211_ops iwl3945_hw_ops = {
5404 .tx = iwl3945_mac_tx,
5405 .start = iwl3945_mac_start,
5406 .stop = iwl3945_mac_stop,
5407 .add_interface = iwl3945_mac_add_interface,
5408 .remove_interface = iwl3945_mac_remove_interface,
5409 .config = iwl3945_mac_config,
5410 .config_interface = iwl3945_mac_config_interface,
5411 .configure_filter = iwl_configure_filter,
5412 .set_key = iwl3945_mac_set_key,
5413 .get_tx_stats = iwl3945_mac_get_tx_stats,
5414 .conf_tx = iwl3945_mac_conf_tx,
5415 .reset_tsf = iwl3945_mac_reset_tsf,
5416 .bss_info_changed = iwl3945_bss_info_changed,
5417 .hw_scan = iwl3945_mac_hw_scan
5420 static int iwl3945_init_drv(struct iwl_priv *priv)
5423 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5425 priv->retry_rate = 1;
5426 priv->ibss_beacon = NULL;
5428 spin_lock_init(&priv->lock);
5429 spin_lock_init(&priv->power_data.lock);
5430 spin_lock_init(&priv->sta_lock);
5431 spin_lock_init(&priv->hcmd_lock);
5433 INIT_LIST_HEAD(&priv->free_frames);
5435 mutex_init(&priv->mutex);
5437 /* Clear the driver's (not device's) station table */
5438 iwl3945_clear_stations_table(priv);
5440 priv->data_retry_limit = -1;
5441 priv->ieee_channels = NULL;
5442 priv->ieee_rates = NULL;
5443 priv->band = IEEE80211_BAND_2GHZ;
5445 priv->iw_mode = NL80211_IFTYPE_STATION;
5447 iwl_reset_qos(priv);
5449 priv->qos_data.qos_active = 0;
5450 priv->qos_data.qos_cap.val = 0;
5452 priv->rates_mask = IWL_RATES_MASK;
5453 /* If power management is turned on, default to AC mode */
5454 priv->power_mode = IWL39_POWER_AC;
5455 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
5457 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
5458 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
5463 ret = iwl_init_channel_map(priv);
5465 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
5469 /* Set up txpower settings in driver for all channels */
5470 if (iwl3945_txpower_set_from_eeprom(priv)) {
5472 goto err_free_channel_map;
5475 ret = iwlcore_init_geos(priv);
5477 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
5478 goto err_free_channel_map;
5480 iwl3945_init_hw_rates(priv, priv->ieee_rates);
5482 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5483 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5484 &priv->bands[IEEE80211_BAND_2GHZ];
5485 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5486 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5487 &priv->bands[IEEE80211_BAND_5GHZ];
5491 err_free_channel_map:
5492 iwl_free_channel_map(priv);
5497 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5500 struct iwl_priv *priv;
5501 struct ieee80211_hw *hw;
5502 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5503 struct iwl3945_eeprom *eeprom;
5504 unsigned long flags;
5506 /***********************
5507 * 1. Allocating HW data
5508 * ********************/
5510 /* mac80211 allocates memory for this device instance, including
5511 * space for this driver's private structure */
5512 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
5514 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
5519 SET_IEEE80211_DEV(hw, &pdev->dev);
5521 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
5522 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
5524 "invalid queues_num, should be between %d and %d\n",
5525 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
5531 * Disabling hardware scan means that mac80211 will perform scans
5532 * "the hard way", rather than using device's scan.
5534 if (iwl3945_mod_params.disable_hw_scan) {
5535 IWL_DEBUG_INFO("Disabling hw_scan\n");
5536 iwl3945_hw_ops.hw_scan = NULL;
5540 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5542 priv->pci_dev = pdev;
5544 #ifdef CONFIG_IWLWIFI_DEBUG
5545 priv->debug_level = iwl3945_mod_params.debug;
5546 atomic_set(&priv->restrict_refcnt, 0);
5548 hw->rate_control_algorithm = "iwl-3945-rs";
5549 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
5551 /* Tell mac80211 our characteristics */
5552 hw->flags = IEEE80211_HW_SIGNAL_DBM |
5553 IEEE80211_HW_NOISE_DBM;
5555 hw->wiphy->interface_modes =
5556 BIT(NL80211_IFTYPE_STATION) |
5557 BIT(NL80211_IFTYPE_ADHOC);
5559 hw->wiphy->custom_regulatory = true;
5561 /* 4 EDCA QOS priorities */
5564 /***************************
5565 * 2. Initializing PCI bus
5566 * *************************/
5567 if (pci_enable_device(pdev)) {
5569 goto out_ieee80211_free_hw;
5572 pci_set_master(pdev);
5574 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5576 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5578 IWL_WARN(priv, "No suitable DMA available.\n");
5579 goto out_pci_disable_device;
5582 pci_set_drvdata(pdev, priv);
5583 err = pci_request_regions(pdev, DRV_NAME);
5585 goto out_pci_disable_device;
5587 /***********************
5588 * 3. Read REV Register
5589 * ********************/
5590 priv->hw_base = pci_iomap(pdev, 0, 0);
5591 if (!priv->hw_base) {
5593 goto out_pci_release_regions;
5596 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5597 (unsigned long long) pci_resource_len(pdev, 0));
5598 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5600 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5601 * PCI Tx retries from interfering with C3 CPU state */
5602 pci_write_config_byte(pdev, 0x41, 0x00);
5605 err = priv->cfg->ops->lib->apm_ops.init(priv);
5607 IWL_DEBUG_INFO("Failed to init APMG\n");
5611 /***********************
5613 * ********************/
5615 /* Read the EEPROM */
5616 err = iwl_eeprom_init(priv);
5618 IWL_ERR(priv, "Unable to init EEPROM\n");
5619 goto out_remove_sysfs;
5621 /* MAC Address location in EEPROM same for 3945/4965 */
5622 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5623 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
5624 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
5625 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5627 /***********************
5628 * 5. Setup HW Constants
5629 * ********************/
5630 /* Device-specific setup */
5631 if (iwl3945_hw_set_hw_params(priv)) {
5632 IWL_ERR(priv, "failed to set hw settings\n");
5636 /***********************
5638 * ********************/
5640 err = iwl3945_init_drv(priv);
5642 IWL_ERR(priv, "initializing driver failed\n");
5646 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
5649 /***********************************
5650 * 7. Initialize Module Parameters
5651 * **********************************/
5653 /* Initialize module parameter values here */
5654 /* Disable radio (SW RF KILL) via parameter when loading driver */
5655 if (iwl3945_mod_params.disable) {
5656 set_bit(STATUS_RF_KILL_SW, &priv->status);
5657 IWL_DEBUG_INFO("Radio disabled.\n");
5661 /***********************
5663 * ********************/
5665 spin_lock_irqsave(&priv->lock, flags);
5666 iwl3945_disable_interrupts(priv);
5667 spin_unlock_irqrestore(&priv->lock, flags);
5669 pci_enable_msi(priv->pci_dev);
5671 err = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
5674 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5675 goto out_disable_msi;
5678 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5680 IWL_ERR(priv, "failed to create sysfs device attributes\n");
5681 goto out_release_irq;
5684 iwl_set_rxon_channel(priv,
5685 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
5686 iwl3945_setup_deferred_work(priv);
5687 iwl3945_setup_rx_handlers(priv);
5689 /*********************************
5690 * 9. Setup and Register mac80211
5691 * *******************************/
5693 err = ieee80211_register_hw(priv->hw);
5695 IWL_ERR(priv, "Failed to register network device: %d\n", err);
5696 goto out_remove_sysfs;
5699 priv->hw->conf.beacon_int = 100;
5700 priv->mac80211_registered = 1;
5702 err = iwl_rfkill_init(priv);
5704 IWL_ERR(priv, "Unable to initialize RFKILL system. "
5705 "Ignoring error: %d\n", err);
5707 /* Start monitoring the killswitch */
5708 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5714 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5716 iwlcore_free_geos(priv);
5719 free_irq(priv->pci_dev->irq, priv);
5720 destroy_workqueue(priv->workqueue);
5721 priv->workqueue = NULL;
5722 iwl3945_unset_hw_params(priv);
5724 pci_disable_msi(priv->pci_dev);
5726 pci_iounmap(pdev, priv->hw_base);
5727 out_pci_release_regions:
5728 pci_release_regions(pdev);
5729 out_pci_disable_device:
5730 pci_disable_device(pdev);
5731 pci_set_drvdata(pdev, NULL);
5732 out_ieee80211_free_hw:
5733 ieee80211_free_hw(priv->hw);
5738 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
5740 struct iwl_priv *priv = pci_get_drvdata(pdev);
5741 unsigned long flags;
5746 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5748 set_bit(STATUS_EXIT_PENDING, &priv->status);
5750 if (priv->mac80211_registered) {
5751 ieee80211_unregister_hw(priv->hw);
5752 priv->mac80211_registered = 0;
5757 /* make sure we flush any pending irq or
5758 * tasklet for the driver
5760 spin_lock_irqsave(&priv->lock, flags);
5761 iwl3945_disable_interrupts(priv);
5762 spin_unlock_irqrestore(&priv->lock, flags);
5764 iwl_synchronize_irq(priv);
5766 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5768 iwl_rfkill_unregister(priv);
5769 cancel_delayed_work(&priv->rfkill_poll);
5771 iwl3945_dealloc_ucode_pci(priv);
5774 iwl_rx_queue_free(priv, &priv->rxq);
5775 iwl3945_hw_txq_ctx_free(priv);
5777 iwl3945_unset_hw_params(priv);
5778 iwl3945_clear_stations_table(priv);
5780 /*netif_stop_queue(dev); */
5781 flush_workqueue(priv->workqueue);
5783 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
5784 * priv->workqueue... so we can't take down the workqueue
5786 destroy_workqueue(priv->workqueue);
5787 priv->workqueue = NULL;
5789 free_irq(pdev->irq, priv);
5790 pci_disable_msi(pdev);
5792 pci_iounmap(pdev, priv->hw_base);
5793 pci_release_regions(pdev);
5794 pci_disable_device(pdev);
5795 pci_set_drvdata(pdev, NULL);
5797 iwl_free_channel_map(priv);
5798 iwlcore_free_geos(priv);
5800 if (priv->ibss_beacon)
5801 dev_kfree_skb(priv->ibss_beacon);
5803 ieee80211_free_hw(priv->hw);
5808 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5810 struct iwl_priv *priv = pci_get_drvdata(pdev);
5812 if (priv->is_open) {
5813 set_bit(STATUS_IN_SUSPEND, &priv->status);
5814 iwl3945_mac_stop(priv->hw);
5817 pci_save_state(pdev);
5818 pci_disable_device(pdev);
5819 pci_set_power_state(pdev, PCI_D3hot);
5824 static int iwl3945_pci_resume(struct pci_dev *pdev)
5826 struct iwl_priv *priv = pci_get_drvdata(pdev);
5829 pci_set_power_state(pdev, PCI_D0);
5830 ret = pci_enable_device(pdev);
5833 pci_restore_state(pdev);
5836 iwl3945_mac_start(priv->hw);
5838 clear_bit(STATUS_IN_SUSPEND, &priv->status);
5842 #endif /* CONFIG_PM */
5844 /*****************************************************************************
5846 * driver and module entry point
5848 *****************************************************************************/
5850 static struct pci_driver iwl3945_driver = {
5852 .id_table = iwl3945_hw_card_ids,
5853 .probe = iwl3945_pci_probe,
5854 .remove = __devexit_p(iwl3945_pci_remove),
5856 .suspend = iwl3945_pci_suspend,
5857 .resume = iwl3945_pci_resume,
5861 static int __init iwl3945_init(void)
5865 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5866 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5868 ret = iwl3945_rate_control_register();
5870 printk(KERN_ERR DRV_NAME
5871 "Unable to register rate control algorithm: %d\n", ret);
5875 ret = pci_register_driver(&iwl3945_driver);
5877 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
5878 goto error_register;
5884 iwl3945_rate_control_unregister();
5888 static void __exit iwl3945_exit(void)
5890 pci_unregister_driver(&iwl3945_driver);
5891 iwl3945_rate_control_unregister();
5894 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
5896 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
5897 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
5898 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
5899 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
5900 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
5901 MODULE_PARM_DESC(swcrypto,
5902 "using software crypto (default 1 [software])\n");
5903 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
5904 MODULE_PARM_DESC(debug, "debug output mask");
5905 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
5906 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
5908 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
5909 MODULE_PARM_DESC(queues_num, "number of hw queues.");
5911 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
5912 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
5914 module_exit(iwl3945_exit);
5915 module_init(iwl3945_init);